shell/ev-view.c

   1 /* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8; c-indent-level: 8 -*- */
   2 /* this file is part of evince, a gnome document viewer
   3  *
   4  *  Copyright (C) 2004 Red Hat, Inc
   5  *
   6  * Evince is free software; you can redistribute it and/or modify it
   7  * under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * Evince is distributed in the hope that it will be useful, but
  12  * WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
  19  */
  20
  21 #include <config.h>
  22 #include <stdlib.h>
  23 #include <math.h>
  24 #include <string.h>
  25 #include <gtk/gtkalignment.h>
  26 #include <glib/gi18n.h>
  27 #include <gtk/gtkbindings.h>
  28 #include <gtk/gtkselection.h>
  29 #include <gtk/gtkclipboard.h>
  30 #include <gdk/gdkkeysyms.h>
  31
  32 #include "ev-marshal.h"
  33 #include "ev-view.h"
  34 #include "ev-view-private.h"
  35 #include "ev-utils.h"
  36 #include "ev-document-links.h"
  37 #include "ev-document-images.h"
  38 #include "ev-document-find.h"
  39 #include "ev-document-transition.h"
  40 #include "ev-document-forms.h"
  41 #include "ev-document-misc.h"
  42 #include "ev-job-queue.h"
  43 #include "ev-page-cache.h"
  44 #include "ev-pixbuf-cache.h"
  45 #include "ev-transition-animation.h"
  46 #if !GTK_CHECK_VERSION (2, 11, 7)
  47 #include "ev-tooltip.h"
  48 #endif
  49 #include "ev-application.h"
  50
  51 #define EV_VIEW_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass), EV_TYPE_VIEW, EvViewClass))
  52 #define EV_IS_VIEW_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), EV_TYPE_VIEW))
  53 #define EV_VIEW_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj), EV_TYPE_VIEW, EvViewClass))
  54
  55
  56 enum {
  57         PROP_0,
  58         PROP_FIND_STATUS,
  59         PROP_CONTINUOUS,
  60         PROP_DUAL_PAGE,
  61         PROP_FULLSCREEN,
  62         PROP_PRESENTATION,
  63         PROP_SIZING_MODE,
  64         PROP_ZOOM,
  65         PROP_ROTATION,
  66         PROP_HAS_SELECTION,
  67 };
  68
  69 enum {
  70         SIGNAL_BINDING_ACTIVATED,
  71         SIGNAL_ZOOM_INVALID,
  72         SIGNAL_HANDLE_LINK,
  73         SIGNAL_EXTERNAL_LINK,
  74         SIGNAL_POPUP_MENU,
  75         N_SIGNALS,
  76 };
  77
  78 enum {
  79         TARGET_DND_URI,
  80         TARGET_DND_TEXT,
  81         TARGET_DND_IMAGE
  82 };
  83
  84 enum {
  85         TARGET_STRING,
  86         TARGET_TEXT,
  87         TARGET_COMPOUND_TEXT,
  88         TARGET_UTF8_STRING,
  89         TARGET_TEXT_BUFFER_CONTENTS
  90 };
  91
  92 static const GtkTargetEntry clipboard_targets[] = {
  93         { "STRING", 0, TARGET_STRING },
  94         { "TEXT",   0, TARGET_TEXT },
  95         { "COMPOUND_TEXT", 0, TARGET_COMPOUND_TEXT },
  96         { "UTF8_STRING", 0, TARGET_UTF8_STRING },
  97 };
  98
  99 static const GtkTargetEntry view_drop_targets[] = {
 100         { "text/uri-list", 0, 0 }
 101 };
 102
 103 static guint signals[N_SIGNALS];
 104
 105 typedef enum {
 106         EV_VIEW_FIND_NEXT,
 107         EV_VIEW_FIND_PREV
 108 } EvViewFindDirection;
 109
 110 #define ZOOM_IN_FACTOR  1.2
 111 #define ZOOM_OUT_FACTOR (1.0/ZOOM_IN_FACTOR)
 112
 113 #define MIN_SCALE 0.05409
 114 #define MAX_SCALE 4.0
 115
 116 #define SCROLL_TIME 150
 117
 118 /*** Scrolling ***/
 119 static void       scroll_to_current_page                     (EvView *view,
 120                                                               GtkOrientation orientation);
 121 static void       ev_view_set_scroll_adjustments             (GtkLayout          *layout,
 122                                                               GtkAdjustment      *hadjustment,
 123                                                               GtkAdjustment      *vadjustment);
 124 static void       view_update_range_and_current_page         (EvView             *view);
 125 static void       set_scroll_adjustment                      (EvView             *view,
 126                                                               GtkOrientation      orientation,
 127                                                               GtkAdjustment      *adjustment);
 128 static void       add_scroll_binding_keypad                  (GtkBindingSet      *binding_set,
 129                                                               guint               keyval,
 130                                                               GdkModifierType modifiers,
 131                                                               EvScrollType       scroll,
 132                                                               gboolean            horizontal);
 133 static void       ensure_rectangle_is_visible                (EvView             *view,
 134                                                               GdkRectangle       *rect);
 135
 136 /*** Geometry computations ***/
 137 static void       compute_border                             (EvView             *view,
 138                                                               int                 width,
 139                                                               int                 height,
 140                                                               GtkBorder          *border);
 141 static void       get_page_y_offset                          (EvView *view,
 142                                                               int page,
 143                                                               double zoom,
 144                                                               int *y_offset);
 145 static gboolean   get_page_extents                           (EvView             *view,
 146                                                               gint                page,
 147                                                               GdkRectangle       *page_area,
 148                                                               GtkBorder          *border);
 149 static void       view_rect_to_doc_rect                      (EvView             *view,
 150                                                               GdkRectangle       *view_rect,
 151                                                               GdkRectangle       *page_area,
 152                                                               EvRectangle        *doc_rect);
 153 static void       doc_rect_to_view_rect                      (EvView             *view,
 154                                                               int                 page,
 155                                                               EvRectangle        *doc_rect,
 156                                                               GdkRectangle       *view_rect);
 157 static void       find_page_at_location                      (EvView             *view,
 158                                                               gdouble             x,
 159                                                               gdouble             y,
 160                                                               gint               *page,
 161                                                               gint               *x_offset,
 162                                                               gint               *y_offset);
 163 static gboolean  doc_point_to_view_point                     (EvView             *view,
 164                                                               int                 page,
 165                                                               EvPoint            *doc_point,
 166                                                               GdkPoint           *view_point);
 167 /*** Hyperrefs ***/
 168 static EvLink *   ev_view_get_link_at_location               (EvView             *view,
 169                                                               gdouble             x,
 170                                                               gdouble             y);
 171 static char*      tip_from_link                              (EvView             *view,
 172                                                               EvLink             *link);
 173 /*** Forms ***/
 174 static EvFormField *ev_view_get_form_field_at_location       (EvView             *view,
 175                                                                gdouble            x,
 176                                                                gdouble            y);
 177
 178 /*** GtkWidget implementation ***/
 179 static void       ev_view_size_request_continuous_dual_page  (EvView             *view,
 180                                                               GtkRequisition     *requisition);
 181 static void       ev_view_size_request_continuous            (EvView             *view,
 182                                                               GtkRequisition     *requisition);
 183 static void       ev_view_size_request_dual_page             (EvView             *view,
 184                                                               GtkRequisition     *requisition);
 185 static void       ev_view_size_request_single_page           (EvView             *view,
 186                                                               GtkRequisition     *requisition);
 187 static void       ev_view_size_request                       (GtkWidget          *widget,
 188                                                               GtkRequisition     *requisition);
 189 static void       ev_view_size_allocate                      (GtkWidget          *widget,
 190                                                               GtkAllocation      *allocation);
 191 static void       ev_view_realize                            (GtkWidget          *widget);
 192 static gboolean   ev_view_scroll_event                       (GtkWidget          *widget,
 193                                                               GdkEventScroll     *event);
 194 static gboolean   ev_view_expose_event                       (GtkWidget          *widget,
 195                                                               GdkEventExpose     *event);
 196 static gboolean   ev_view_popup_menu                         (GtkWidget          *widget);
 197 static gboolean   ev_view_button_press_event                 (GtkWidget          *widget,
 198                                                               GdkEventButton     *event);
 199 static gboolean   ev_view_motion_notify_event                (GtkWidget          *widget,
 200                                                               GdkEventMotion     *event);
 201 static gboolean   ev_view_button_release_event               (GtkWidget          *widget,
 202                                                               GdkEventButton     *event);
 203 static gboolean   ev_view_enter_notify_event                 (GtkWidget          *widget,
 204                                                               GdkEventCrossing   *event);
 205 static gboolean   ev_view_leave_notify_event                 (GtkWidget          *widget,
 206                                                               GdkEventCrossing   *event);
 207 static void       ev_view_style_set                          (GtkWidget          *widget,
 208                                                               GtkStyle           *old_style);
 209 static void       ev_view_remove_all                         (EvView             *view);
 210
 211 static AtkObject *ev_view_get_accessible                     (GtkWidget *widget);
 212
 213 /*** Drawing ***/
 214 static guint32    ev_gdk_color_to_rgb                        (const GdkColor     *color);
 215 static void       draw_rubberband                            (GtkWidget          *widget,
 216                                                               GdkWindow          *window,
 217                                                               const GdkRectangle *rect,
 218                                                               guchar              alpha);
 219 static void       highlight_find_results                     (EvView             *view,
 220                                                               int                 page);
 221 static void       draw_one_page                              (EvView             *view,
 222                                                               gint                page,
 223                                                               cairo_t            *cr,
 224                                                               GdkRectangle       *page_area,
 225                                                               GtkBorder          *border,
 226                                                               GdkRectangle       *expose_area,
 227                                                               gboolean           *page_ready);
 228 static void       draw_loading_text                          (EvView             *view,
 229                                                               GdkRectangle       *page_area,
 230                                                               GdkRectangle       *expose_area);
 231
 232 /*** Callbacks ***/
 233 static void       find_changed_cb                            (EvDocument         *document,
 234                                                               int                 page,
 235                                                               EvView             *view);
 236 static void       job_finished_cb                            (EvPixbufCache      *pixbuf_cache,
 237                                                               GdkRegion          *region,
 238                                                               EvView             *view);
 239 static void       page_changed_cb                            (EvPageCache        *page_cache,
 240                                                               int                 new_page,
 241                                                               EvView             *view);
 242 static void       on_adjustment_value_changed                (GtkAdjustment      *adjustment,
 243                                                               EvView             *view);
 244
 245 /*** GObject ***/
 246 static void       ev_view_finalize                           (GObject            *object);
 247 static void       ev_view_destroy                            (GtkObject          *object);
 248 static void       ev_view_set_property                       (GObject            *object,
 249                                                               guint               prop_id,
 250                                                               const GValue       *value,
 251                                                               GParamSpec         *pspec);
 252 static void       ev_view_get_property                       (GObject            *object,
 253                                                               guint               prop_id,
 254                                                               GValue             *value,
 255                                                               GParamSpec         *pspec);
 256 static void       ev_view_class_init                         (EvViewClass        *class);
 257 static void       ev_view_init                               (EvView             *view);
 258
 259 /*** Zoom and sizing ***/
 260 static double   zoom_for_size_fit_width                      (int doc_width,
 261                                                               int doc_height,
 262                                                               int target_width,
 263                                                               int target_height,
 264                                                               int vsb_width);
 265 static double   zoom_for_size_fit_height                     (int doc_width,
 266                                                               int doc_height,
 267                                                               int target_width,
 268                                                               int target_height,
 269                                                               int vsb_height);
 270 static double   zoom_for_size_best_fit                       (int doc_width,
 271                                                               int doc_height,
 272                                                               int target_width,
 273                                                               int target_height,
 274                                                               int vsb_width,
 275                                                               int hsb_width);
 276 static void     ev_view_zoom_for_size_presentation           (EvView *view,
 277                                                               int     width,
 278                                                               int     height);
 279 static void     ev_view_zoom_for_size_continuous_and_dual_page (EvView *view,
 280                                                                 int     width,
 281                                                                 int     height,
 282                                                                 int     vsb_width,
 283                                                                 int     hsb_height);
 284 static void     ev_view_zoom_for_size_continuous               (EvView *view,
 285                                                                 int     width,
 286                                                                 int     height,
 287                                                                 int     vsb_width,
 288                                                                 int     hsb_height);
 289 static void     ev_view_zoom_for_size_dual_page                (EvView *view,
 290                                                                 int     width,
 291                                                                 int     height,
 292                                                                 int     vsb_width,
 293                                                                 int     hsb_height);
 294 static void     ev_view_zoom_for_size_single_page              (EvView *view,
 295                                                                 int     width,
 296                                                                 int     height,
 297                                                                 int     vsb_width,
 298                                                                 int     hsb_height);
 299 /*** Cursors ***/
 300 static GdkCursor* ev_view_create_invisible_cursor            (void);
 301 static void       ev_view_set_cursor                         (EvView             *view,
 302                                                               EvViewCursor        new_cursor);
 303 static void       ev_view_handle_cursor_over_xy              (EvView *view,
 304                                                               gint x,
 305                                                               gint y);
 306
 307 /*** Find ***/
 308 static void       update_find_status_message                 (EvView             *view,
 309                                                               gboolean            this_page);
 310 static void       ev_view_set_find_status                    (EvView             *view,
 311                                                               const char         *message);
 312 static void       jump_to_find_result                        (EvView             *view);
 313 static void       jump_to_find_page                          (EvView             *view,
 314                                                               EvViewFindDirection direction,
 315                                                               gint                shift);
 316
 317 /*** Selection ***/
 318 static void       compute_selections                         (EvView             *view,
 319                                                               EvSelectionStyle    style,
 320                                                               GdkPoint           *start,
 321                                                               GdkPoint           *stop);
 322 static void       clear_selection                            (EvView             *view);
 323 static void       clear_link_selected                        (EvView             *view);
 324 static void       selection_free                             (EvViewSelection    *selection);
 325 static char*      get_selected_text                          (EvView             *ev_view);
 326 static void       ev_view_primary_get_cb                     (GtkClipboard       *clipboard,
 327                                                               GtkSelectionData   *selection_data,
 328                                                               guint               info,
 329                                                               gpointer            data);
 330 static void       ev_view_primary_clear_cb                   (GtkClipboard       *clipboard,
 331                                                               gpointer            data);
 332 static void       ev_view_update_primary_selection           (EvView             *ev_view);
 333
 334 /*** Presentation ***/
 335 static void       ev_view_presentation_transition_start      (EvView             *ev_view);
 336 static void       ev_view_presentation_transition_stop       (EvView             *ev_view);
 337
 338
 339 G_DEFINE_TYPE (EvView, ev_view, GTK_TYPE_LAYOUT)
 340
 341 static void
 342 scroll_to_current_page (EvView *view, GtkOrientation orientation)
 343 {
 344         GdkPoint view_point;
 345
 346         if (view->document == NULL) {
 347                 return;
 348         }
 349
 350         doc_point_to_view_point (view, view->current_page, &view->pending_point, &view_point);
 351
 352         if (orientation == GTK_ORIENTATION_VERTICAL) {
 353                 view->pending_point.y = 0;
 354         } else {
 355                 view->pending_point.x = 0;
 356         }
 357
 358         if (orientation == GTK_ORIENTATION_VERTICAL) {
 359                 if (view->continuous) {
 360                         gtk_adjustment_clamp_page (view->vadjustment,
 361                                                    view_point.y - view->spacing / 2,
 362                                                    view_point.y + view->vadjustment->page_size);
 363                 } else {
 364                         gtk_adjustment_set_value (view->vadjustment,
 365                                                   CLAMP (view_point.y,
 366                                                   view->vadjustment->lower,
 367                                                   view->vadjustment->upper -
 368                                                   view->vadjustment->page_size));
 369                 }
 370         } else {
 371                 if (view->dual_page) {
 372                         gtk_adjustment_clamp_page (view->hadjustment,
 373                                                    view_point.x,
 374                                                    view_point.x + view->hadjustment->page_size);
 375                 } else {
 376                         gtk_adjustment_set_value (view->hadjustment,
 377                                                   CLAMP (view_point.x,
 378                                                   view->hadjustment->lower,
 379                                                   view->hadjustment->upper -
 380                                                   view->hadjustment->page_size));
 381                 }
 382         }
 383 }
 384
 385 static void
 386 view_set_adjustment_values (EvView         *view,
 387                             GtkOrientation  orientation)
 388 {
 389         GtkWidget *widget = GTK_WIDGET (view);
 390         GtkAdjustment *adjustment;
 391         int requisition;
 392         int allocation;
 393
 394         double factor;
 395         gint new_value;
 396
 397         if (orientation == GTK_ORIENTATION_HORIZONTAL)  {
 398                 requisition = widget->requisition.width;
 399                 allocation = widget->allocation.width;
 400                 adjustment = view->hadjustment;
 401         } else {
 402                 requisition = widget->requisition.height;
 403                 allocation = widget->allocation.height;
 404                 adjustment = view->vadjustment;
 405         }
 406
 407         if (!adjustment)
 408                 return;
 409
 410         factor = 1.0;
 411         switch (view->pending_scroll) {
 412                 case SCROLL_TO_KEEP_POSITION:
 413                 case SCROLL_TO_FIND_LOCATION:
 414                         factor = (adjustment->value) / adjustment->upper;
 415                         break;
 416                 case SCROLL_TO_PAGE_POSITION:
 417                         break;
 418                 case SCROLL_TO_CENTER:
 419                         factor = (adjustment->value + adjustment->page_size * 0.5) / adjustment->upper;
 420                         break;
 421         }
 422
 423         adjustment->page_size = allocation;
 424         adjustment->step_increment = allocation * 0.1;
 425         adjustment->page_increment = allocation * 0.9;
 426         adjustment->lower = 0;
 427         adjustment->upper = MAX (allocation, requisition);
 428
 429         /*
 430          * We add 0.5 to the values before to average out our rounding errors.
 431          */
 432         switch (view->pending_scroll) {
 433                 case SCROLL_TO_KEEP_POSITION:
 434                 case SCROLL_TO_FIND_LOCATION:
 435                         new_value = CLAMP (adjustment->upper * factor + 0.5, 0, adjustment->upper - adjustment->page_size);
 436                         gtk_adjustment_set_value (adjustment, (int)new_value);
 437                         break;
 438                 case SCROLL_TO_PAGE_POSITION:
 439                         scroll_to_current_page (view, orientation);
 440                         break;
 441                 case SCROLL_TO_CENTER:
 442                         new_value = CLAMP (adjustment->upper * factor - adjustment->page_size * 0.5 + 0.5,
 443                                            0, adjustment->upper - adjustment->page_size);
 444                         gtk_adjustment_set_value (adjustment, (int)new_value);
 445                         break;
 446         }
 447
 448         gtk_adjustment_changed (adjustment);
 449 }
 450
 451 static void
 452 view_update_range_and_current_page (EvView *view)
 453 {
 454         gint current_page;
 455         gint best_current_page = -1;
 456
 457         /* Presentation trumps all other modes */
 458         if (view->presentation) {
 459                 view->start_page = view->current_page;
 460                 view->end_page = view->current_page;
 461         } else if (view->continuous) {
 462                 GdkRectangle current_area, unused, page_area;
 463                 GtkBorder border;
 464                 gboolean found = FALSE;
 465                 gint area_max = -1, area;
 466                 int i;
 467
 468                 if (!(view->vadjustment && view->hadjustment))
 469                         return;
 470
 471                 current_area.x = view->hadjustment->value;
 472                 current_area.width = view->hadjustment->upper;
 473                 current_area.y = view->vadjustment->value;
 474                 current_area.height = view->vadjustment->page_size;
 475
 476                 for (i = 0; i < ev_page_cache_get_n_pages (view->page_cache); i++) {
 477
 478                         get_page_extents (view, i, &page_area, &border);
 479
 480                         if (gdk_rectangle_intersect (&current_area, &page_area, &unused)) {
 481                                 area = unused.width * unused.height;
 482
 483                                 if (!found) {
 484                                         area_max = area;
 485                                         view->start_page = i;
 486                                         found = TRUE;
 487                                         best_current_page = i;
 488                                 }
 489                                 if (area > area_max) {
 490                                         best_current_page = (area == area_max) ? MIN (i, best_current_page) : i;
 491                                         area_max = area;
 492                                 }
 493
 494                                 view->end_page = i;
 495                         } else if (found && view->current_page <= view->end_page) {
 496                                 break;
 497                         }
 498                 }
 499
 500         } else if (view->dual_page) {
 501                 if (view->current_page % 2 == ev_page_cache_get_dual_even_left (view->page_cache)) {
 502                         view->start_page = view->current_page;
 503                         if (view->current_page + 1 < ev_page_cache_get_n_pages (view->page_cache))
 504                                 view->end_page = view->start_page + 1;
 505                         else
 506                                 view->end_page = view->start_page;
 507                 } else {
 508                         if (view->current_page < 1)
 509                                 view->start_page = view->current_page;
 510                         else
 511                                 view->start_page = view->current_page - 1;
 512                         view->end_page = view->current_page;
 513                 }
 514         } else {
 515                 view->start_page = view->current_page;
 516                 view->end_page = view->current_page;
 517         }
 518
 519         best_current_page = MAX (best_current_page, view->start_page);
 520         current_page = ev_page_cache_get_current_page (view->page_cache);
 521
 522         if ((current_page != best_current_page) && (view->pending_scroll == SCROLL_TO_KEEP_POSITION)) {
 523                 view->current_page = best_current_page;
 524                 ev_page_cache_set_current_page (view->page_cache, best_current_page);
 525         }
 526
 527         ev_pixbuf_cache_set_page_range (view->pixbuf_cache,
 528                                         view->start_page,
 529                                         view->end_page,
 530                                         view->rotation,
 531                                         view->scale,
 532                                         view->selection_info.selections);
 533 }
 534
 535 static void
 536 set_scroll_adjustment (EvView *view,
 537                        GtkOrientation  orientation,
 538                        GtkAdjustment  *adjustment)
 539 {
 540         GtkAdjustment **to_set;
 541
 542         if (orientation == GTK_ORIENTATION_HORIZONTAL)
 543                 to_set = &view->hadjustment;
 544         else
 545                 to_set = &view->vadjustment;
 546
 547         if (*to_set != adjustment) {
 548                 if (*to_set) {
 549                         g_signal_handlers_disconnect_by_func (*to_set,
 550                                                               (gpointer) on_adjustment_value_changed,
 551                                                               view);
 552                         g_object_unref (*to_set);
 553                 }
 554
 555                 *to_set = adjustment;
 556                 view_set_adjustment_values (view, orientation);
 557
 558                 if (*to_set) {
 559                         g_object_ref (*to_set);
 560                         g_signal_connect (*to_set, "value_changed",
 561                                           G_CALLBACK (on_adjustment_value_changed), view);
 562                 }
 563         }
 564 }
 565
 566 static void
 567 ev_view_set_scroll_adjustments (GtkLayout      *layout,
 568                                 GtkAdjustment  *hadjustment,
 569                                 GtkAdjustment  *vadjustment)
 570 {
 571         EvView *view = EV_VIEW (layout);
 572
 573         set_scroll_adjustment (view, GTK_ORIENTATION_HORIZONTAL, hadjustment);
 574         set_scroll_adjustment (view, GTK_ORIENTATION_VERTICAL, vadjustment);
 575
 576         on_adjustment_value_changed (NULL, view);
 577 }
 578
 579 static void
 580 add_scroll_binding_keypad (GtkBindingSet  *binding_set,
 581                            guint           keyval,
 582                            GdkModifierType modifiers,
 583                            EvScrollType    scroll,
 584                            gboolean        horizontal)
 585 {
 586   guint keypad_keyval = keyval - GDK_Left + GDK_KP_Left;
 587
 588   gtk_binding_entry_add_signal (binding_set, keyval, modifiers,
 589                                 "binding_activated", 2,
 590                                 EV_TYPE_SCROLL_TYPE, scroll,
 591                                 G_TYPE_BOOLEAN, horizontal);
 592   gtk_binding_entry_add_signal (binding_set, keypad_keyval, modifiers,
 593                                 "binding_activated", 2,
 594                                 EV_TYPE_SCROLL_TYPE, scroll,
 595                                 G_TYPE_BOOLEAN, horizontal);
 596 }
 597
 598 void
 599 ev_view_scroll (EvView        *view,
 600                 EvScrollType   scroll,
 601                 gboolean horizontal)
 602 {
 603         GtkAdjustment *adjustment;
 604         double value, increment;
 605         gboolean first_page = FALSE;
 606         gboolean last_page = FALSE;
 607
 608         view->jump_to_find_result = FALSE;
 609
 610         if (view->presentation || view->sizing_mode == EV_SIZING_BEST_FIT) {
 611                 switch (scroll) {
 612                         case EV_SCROLL_PAGE_BACKWARD:
 613                         case EV_SCROLL_STEP_BACKWARD:
 614                                 ev_view_previous_page (view);
 615                                 break;
 616                         case EV_SCROLL_PAGE_FORWARD:
 617                         case EV_SCROLL_STEP_FORWARD:
 618                                 ev_view_next_page (view);
 619                                 break;
 620                         default:
 621                                 break;
 622                 }
 623                 return;
 624         }
 625
 626         /* Assign values for increment and vertical adjustment */
 627         adjustment = horizontal ? view->hadjustment : view->vadjustment;
 628         increment = adjustment->page_size * 0.75;
 629         value = adjustment->value;
 630
 631         /* Assign boolean for first and last page */
 632         if (view->current_page == 0)
 633                 first_page = TRUE;
 634         if (view->current_page == ev_page_cache_get_n_pages (view->page_cache) - 1)
 635                 last_page = TRUE;
 636
 637         switch (scroll) {
 638                 case EV_SCROLL_PAGE_BACKWARD:
 639                         /* Do not jump backwards if at the first page */
 640                         if (value == (adjustment->lower) && first_page) {
 641                                 /* Do nothing */
 642                                 /* At the top of a page, assign the upper bound limit of previous page */
 643                         } else if (value == (adjustment->lower)) {
 644                                 value = adjustment->upper - adjustment->page_size;
 645                                 ev_view_previous_page (view);
 646                                 /* Jump to the top */
 647                         } else {
 648                                 value = MAX (value - increment, adjustment->lower);
 649                         }
 650                         break;
 651                 case EV_SCROLL_PAGE_FORWARD:
 652                         /* Do not jump forward if at the last page */
 653                         if (value == (adjustment->upper - adjustment->page_size) && last_page) {
 654                                 /* Do nothing */
 655                         /* At the bottom of a page, assign the lower bound limit of next page */
 656                         } else if (value == (adjustment->upper - adjustment->page_size)) {
 657                                 value = 0;
 658                                 ev_view_next_page (view);
 659                         /* Jump to the bottom */
 660                         } else {
 661                                 value = MIN (value + increment, adjustment->upper - adjustment->page_size);
 662                         }
 663                         break;
 664                 case EV_SCROLL_STEP_BACKWARD:
 665                         value -= adjustment->step_increment;
 666                         break;
 667                 case EV_SCROLL_STEP_FORWARD:
 668                         value += adjustment->step_increment;
 669                         break;
 670                 case EV_SCROLL_STEP_DOWN:
 671                         value -= adjustment->step_increment / 10;
 672                         break;
 673                 case EV_SCROLL_STEP_UP:
 674                         value += adjustment->step_increment / 10;
 675                         break;
 676                 default:
 677                         break;
 678         }
 679
 680         value = CLAMP (value, adjustment->lower,
 681                        adjustment->upper - adjustment->page_size);
 682
 683         gtk_adjustment_set_value (adjustment, value);
 684 }
 685
 686 #define MARGIN 5
 687
 688 static void
 689 ensure_rectangle_is_visible (EvView *view, GdkRectangle *rect)
 690 {
 691         GtkWidget *widget = GTK_WIDGET (view);
 692         GtkAdjustment *adjustment;
 693         int value;
 694
 695         view->pending_scroll = SCROLL_TO_FIND_LOCATION;
 696
 697         adjustment = view->vadjustment;
 698
 699         if (rect->y < adjustment->value) {
 700                 value = MAX (adjustment->lower, rect->y - MARGIN);
 701                 gtk_adjustment_set_value (view->vadjustment, value);
 702         } else if (rect->y + rect->height >
 703                    adjustment->value + widget->allocation.height) {
 704                 value = MIN (adjustment->upper, rect->y + rect->height -
 705                              widget->allocation.height + MARGIN);
 706                 gtk_adjustment_set_value (view->vadjustment, value);
 707         }
 708
 709         adjustment = view->hadjustment;
 710
 711         if (rect->x < adjustment->value) {
 712                 value = MAX (adjustment->lower, rect->x - MARGIN);
 713                 gtk_adjustment_set_value (view->hadjustment, value);
 714         } else if (rect->x + rect->height >
 715                    adjustment->value + widget->allocation.width) {
 716                 value = MIN (adjustment->upper, rect->x + rect->width -
 717                              widget->allocation.width + MARGIN);
 718                 gtk_adjustment_set_value (view->hadjustment, value);
 719         }
 720
 721         gtk_widget_queue_resize (GTK_WIDGET (view));
 722 }
 723
 724 /*** Geometry computations ***/
 725
 726 static void
 727 compute_border (EvView *view, int width, int height, GtkBorder *border)
 728 {
 729         if (view->presentation) {
 730                 border->left = 0;
 731                 border->right = 0;
 732                 border->top = 0;
 733                 border->bottom = 0;
 734         } else {
 735                 ev_document_misc_get_page_border_size (width, height, border);
 736         }
 737 }
 738
 739 static void
 740 get_page_y_offset (EvView *view, int page, double zoom, int *y_offset)
 741 {
 742         int max_width, offset;
 743         GtkBorder border;
 744
 745         g_return_if_fail (y_offset != NULL);
 746
 747         ev_page_cache_get_max_width (view->page_cache, view->rotation, zoom, &max_width);
 748
 749         compute_border (view, max_width, max_width, &border);
 750
 751         if (view->dual_page) {
 752                 ev_page_cache_get_height_to_page (view->page_cache, page,
 753                                                   view->rotation, zoom, NULL, &offset);
 754                 offset += ((page + ev_page_cache_get_dual_even_left (view->page_cache)) / 2 + 1) * view->spacing + ((page + ev_page_cache_get_dual_even_left (view->page_cache)) / 2 ) * (border.top + border.bottom);
 755         } else {
 756                 ev_page_cache_get_height_to_page (view->page_cache, page,
 757                                                   view->rotation, zoom, &offset, NULL);
 758                 offset += (page + 1) * view->spacing + page * (border.top + border.bottom);
 759         }
 760
 761         *y_offset = offset;
 762         return;
 763 }
 764
 765 static gboolean
 766 get_page_extents (EvView       *view,
 767                   gint          page,
 768                   GdkRectangle *page_area,
 769                   GtkBorder    *border)
 770 {
 771         GtkWidget *widget;
 772         int width, height;
 773
 774         widget = GTK_WIDGET (view);
 775
 776         /* Get the size of the page */
 777         ev_page_cache_get_size (view->page_cache, page,
 778                                 view->rotation,
 779                                 view->scale,
 780                                 &width, &height);
 781         compute_border (view, width, height, border);
 782         page_area->width = width + border->left + border->right;
 783         page_area->height = height + border->top + border->bottom;
 784
 785         if (view->presentation) {
 786                 page_area->x = (MAX (0, widget->allocation.width - width))/2;
 787                 page_area->y = (MAX (0, widget->allocation.height - height))/2;
 788         } else if (view->continuous) {
 789                 gint max_width;
 790                 gint x, y;
 791
 792                 ev_page_cache_get_max_width (view->page_cache, view->rotation,
 793                                              view->scale, &max_width);
 794                 max_width = max_width + border->left + border->right;
 795                 /* Get the location of the bounding box */
 796                 if (view->dual_page) {
 797                         x = view->spacing + ((page % 2 == ev_page_cache_get_dual_even_left (view->page_cache)) ? 0 : 1) * (max_width + view->spacing);
 798                         x = x + MAX (0, widget->allocation.width - (max_width * 2 + view->spacing * 3)) / 2;
 799                         if (page % 2 == ev_page_cache_get_dual_even_left (view->page_cache))
 800                                 x = x + (max_width - width - border->left - border->right);
 801                 } else {
 802                         x = view->spacing;
 803                         x = x + MAX (0, widget->allocation.width - (width + view->spacing * 2)) / 2;
 804                 }
 805
 806                 get_page_y_offset (view, page, view->scale, &y);
 807
 808                 page_area->x = x;
 809                 page_area->y = y;
 810         } else {
 811                 gint x, y;
 812                 if (view->dual_page) {
 813                         gint width_2, height_2;
 814                         gint max_width = width;
 815                         gint max_height = height;
 816                         GtkBorder overall_border;
 817                         gint other_page;
 818
 819                         other_page = (page % 2 == ev_page_cache_get_dual_even_left (view->page_cache)) ? page + 1: page - 1;
 820
 821                         /* First, we get the bounding box of the two pages */
 822                         if (other_page < ev_page_cache_get_n_pages (view->page_cache)
 823                             && (0 <= other_page)) {
 824                                 ev_page_cache_get_size (view->page_cache,
 825                                                         other_page,
 826                                                         view->rotation,
 827                                                         view->scale,
 828                                                         &width_2, &height_2);
 829                                 if (width_2 > width)
 830                                         max_width = width_2;
 831                                 if (height_2 > height)
 832                                         max_height = height_2;
 833                         }
 834                         compute_border (view, max_width, max_height, &overall_border);
 835
 836                         /* Find the offsets */
 837                         x = view->spacing;
 838                         y = view->spacing;
 839
 840                         /* Adjust for being the left or right page */
 841                         if (page % 2 == ev_page_cache_get_dual_even_left (view->page_cache))
 842                                 x = x + max_width - width;
 843                         else
 844                                 x = x + (max_width + overall_border.left + overall_border.right) + view->spacing;
 845
 846                         y = y + (max_height - height)/2;
 847
 848                         /* Adjust for extra allocation */
 849                         x = x + MAX (0, widget->allocation.width -
 850                                      ((max_width + overall_border.left + overall_border.right) * 2 + view->spacing * 3))/2;
 851                         y = y + MAX (0, widget->allocation.height - (height + view->spacing * 2))/2;
 852                 } else {
 853                         x = view->spacing;
 854                         y = view->spacing;
 855
 856                         /* Adjust for extra allocation */
 857                         x = x + MAX (0, widget->allocation.width - (width + border->left + border->right + view->spacing * 2))/2;
 858                         y = y + MAX (0, widget->allocation.height - (height + border->top + border->bottom +  view->spacing * 2))/2;
 859                 }
 860
 861                 page_area->x = x;
 862                 page_area->y = y;
 863         }
 864
 865         return TRUE;
 866 }
 867
 868 static void
 869 view_point_to_doc_point (EvView *view,
 870                          GdkPoint *view_point,
 871                          GdkRectangle *page_area,
 872                          double  *doc_point_x,
 873                          double  *doc_point_y)
 874 {
 875         *doc_point_x = (double) (view_point->x - page_area->x) / view->scale;
 876         *doc_point_y = (double) (view_point->y - page_area->y) / view->scale;
 877 }
 878
 879 static void
 880 view_rect_to_doc_rect (EvView *view,
 881                        GdkRectangle *view_rect,
 882                        GdkRectangle *page_area,
 883                        EvRectangle  *doc_rect)
 884 {
 885         doc_rect->x1 = (double) (view_rect->x - page_area->x) / view->scale;
 886         doc_rect->y1 = (double) (view_rect->y - page_area->y) / view->scale;
 887         doc_rect->x2 = doc_rect->x1 + (double) view_rect->width / view->scale;
 888         doc_rect->y2 = doc_rect->y1 + (double) view_rect->height / view->scale;
 889 }
 890
 891 static gboolean
 892 doc_point_to_view_point (EvView       *view,
 893                          int           page,
 894                          EvPoint      *doc_point,
 895                          GdkPoint     *view_point)
 896 {
 897         GdkRectangle page_area;
 898         GtkBorder border;
 899         double x, y, view_x, view_y;
 900         int width, height;
 901
 902         ev_page_cache_get_size (view->page_cache, page,
 903                                 view->rotation,
 904                                 1.0,
 905                                 &width, &height);
 906
 907         if (view->rotation == 0) {
 908                 x = doc_point->x;
 909                 y = doc_point->y;
 910         } else if (view->rotation == 90) {
 911                 x = width - doc_point->y;
 912                 y = doc_point->x;
 913         } else if (view->rotation == 180) {
 914                 x = width - doc_point->x;
 915                 y = height - doc_point->y;
 916         } else if (view->rotation == 270) {
 917                 x = doc_point->y;
 918                 y = height - doc_point->x;
 919         } else {
 920                 g_assert_not_reached ();
 921         }
 922
 923         get_page_extents (view, page, &page_area, &border);
 924
 925         view_x = x * view->scale;
 926         view_y = y * view->scale;
 927         view_point->x = view_x + page_area.x;
 928         view_point->y = view_y + page_area.y;
 929
 930         return (view_x > 0 && view_x <= page_area.width &&
 931                 view_y > 0 && view_y <= page_area.height);
 932 }
 933
 934 static void
 935 doc_rect_to_view_rect (EvView       *view,
 936                        int           page,
 937                        EvRectangle  *doc_rect,
 938                        GdkRectangle *view_rect)
 939 {
 940         GdkRectangle page_area;
 941         GtkBorder border;
 942         double x, y, w, h;
 943         int width, height;
 944
 945         ev_page_cache_get_size (view->page_cache, page,
 946                                 view->rotation,
 947                                 1.0,
 948                                 &width, &height);
 949
 950         if (view->rotation == 0) {
 951                 x = doc_rect->x1;
 952                 y = doc_rect->y1;
 953                 w = doc_rect->x2 - doc_rect->x1;
 954                 h = doc_rect->y2 - doc_rect->y1;
 955         } else if (view->rotation == 90) {
 956                 x = width - doc_rect->y2;
 957                 y = doc_rect->x1;
 958                 w = doc_rect->y2 - doc_rect->y1;
 959                 h = doc_rect->x2 - doc_rect->x1;
 960         } else if (view->rotation == 180) {
 961                 x = width - doc_rect->x2;
 962                 y = height - doc_rect->y2;
 963                 w = doc_rect->x2 - doc_rect->x1;
 964                 h = doc_rect->y2 - doc_rect->y1;
 965         } else if (view->rotation == 270) {
 966                 x = doc_rect->y1;
 967                 y = height - doc_rect->x2;
 968                 w = doc_rect->y2 - doc_rect->y1;
 969                 h = doc_rect->x2 - doc_rect->x1;
 970         } else {
 971                 g_assert_not_reached ();
 972         }
 973
 974         get_page_extents (view, page, &page_area, &border);
 975
 976         view_rect->x = x * view->scale + page_area.x;
 977         view_rect->y = y * view->scale + page_area.y;
 978         view_rect->width = w * view->scale;
 979         view_rect->height = h * view->scale;
 980 }
 981
 982 static void
 983 find_page_at_location (EvView  *view,
 984                        gdouble  x,
 985                        gdouble  y,
 986                        gint    *page,
 987                        gint    *x_offset,
 988                        gint    *y_offset)
 989 {
 990         int i;
 991
 992         if (view->document == NULL)
 993                 return;
 994
 995         g_assert (page);
 996         g_assert (x_offset);
 997         g_assert (y_offset);
 998
 999         for (i = view->start_page; i <= view->end_page; i++) {
1000                 GdkRectangle page_area;
1001                 GtkBorder border;
1002
1003                 if (! get_page_extents (view, i, &page_area, &border))
1004                         continue;
1005
1006                 if ((x >= page_area.x + border.left) &&
1007                     (x < page_area.x + page_area.width - border.right) &&
1008                     (y >= page_area.y + border.top) &&
1009                     (y < page_area.y + page_area.height - border.bottom)) {
1010                         *page = i;
1011                         *x_offset = x - (page_area.x + border.left);
1012                         *y_offset = y - (page_area.y + border.top);
1013                         return;
1014                 }
1015         }
1016
1017         *page = -1;
1018 }
1019
1020 static gboolean
1021 location_in_text (EvView  *view,
1022                   gdouble  x,
1023                   gdouble  y)
1024 {
1025         GdkRegion *region;
1026         gint page = -1;
1027         gint x_offset = 0, y_offset = 0;
1028
1029         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1030
1031         if (page == -1)
1032                 return FALSE;
1033
1034         region = ev_pixbuf_cache_get_text_mapping (view->pixbuf_cache, page);
1035
1036         if (region)
1037                 return gdk_region_point_in (region, x_offset / view->scale, y_offset / view->scale);
1038         else
1039                 return FALSE;
1040 }
1041
1042 static int
1043 ev_view_get_width (EvView *view)
1044 {
1045         return GTK_WIDGET (view)->allocation.width;
1046 }
1047
1048 static int
1049 ev_view_get_height (EvView *view)
1050 {
1051         return GTK_WIDGET (view)->allocation.height;
1052 }
1053
1054 static gboolean
1055 location_in_selected_text (EvView  *view,
1056                            gdouble  x,
1057                            gdouble  y)
1058 {
1059         gint page = -1;
1060         gint x_offset = 0, y_offset = 0;
1061         EvViewSelection *selection;
1062         GList *l = NULL;
1063
1064         for (l = view->selection_info.selections; l != NULL; l = l->next) {
1065                 selection = (EvViewSelection *)l->data;
1066
1067                 find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1068
1069                 if (page != selection->page)
1070                         continue;
1071
1072                 if (selection->covered_region &&
1073                     gdk_region_point_in (selection->covered_region, x_offset, y_offset))
1074                         return TRUE;
1075         }
1076
1077         return FALSE;
1078 }
1079
1080 static gboolean
1081 get_doc_point_from_offset (EvView *view,
1082                            gint    page,
1083                            gint    x_offset,
1084                            gint    y_offset,
1085                            gint   *x_new,
1086                            gint   *y_new)
1087 {
1088         int width, height;
1089         double x, y;
1090
1091         ev_page_cache_get_size (view->page_cache, page,
1092                                 view->rotation,
1093                                 1.0,
1094                                 &width, &height);
1095
1096         x_offset = x_offset / view->scale;
1097         y_offset = y_offset / view->scale;
1098
1099         if (view->rotation == 0) {
1100                 x = x_offset;
1101                 y = y_offset;
1102         } else if (view->rotation == 90) {
1103                 x = y_offset;
1104                 y = width - x_offset;
1105         } else if (view->rotation == 180) {
1106                 x = width - x_offset;
1107                 y = height - y_offset;
1108         } else if (view->rotation == 270) {
1109                 x = height - y_offset;
1110                 y = x_offset;
1111         } else {
1112                 g_assert_not_reached ();
1113         }
1114
1115         *x_new = x;
1116         *y_new = y;
1117
1118         return TRUE;
1119 }
1120
1121 /*** Hyperref ***/
1122 static EvLink *
1123 ev_view_get_link_at_location (EvView  *view,
1124                               gdouble  x,
1125                               gdouble  y)
1126 {
1127         gint page = -1;
1128         gint x_offset = 0, y_offset = 0;
1129         gint x_new = 0, y_new = 0;
1130         GList *link_mapping;
1131
1132         if (!EV_IS_DOCUMENT_LINKS (view->document))
1133                 return NULL;
1134
1135         x += view->scroll_x;
1136         y += view->scroll_y;
1137
1138         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1139
1140         if (page == -1)
1141                 return NULL;
1142
1143
1144         if (get_doc_point_from_offset (view, page, x_offset,
1145                                        y_offset, &x_new, &y_new) == FALSE)
1146                 return NULL;
1147
1148         link_mapping = ev_pixbuf_cache_get_link_mapping (view->pixbuf_cache, page);
1149
1150         if (link_mapping)
1151                 return ev_link_mapping_find (link_mapping, x_new, y_new);
1152         else
1153                 return NULL;
1154 }
1155
1156 static void
1157 goto_fitr_dest (EvView *view, EvLinkDest *dest)
1158 {
1159         EvPoint doc_point;
1160         gdouble zoom, left, top;
1161         gboolean change_left, change_top;
1162
1163         left = ev_link_dest_get_left (dest, &change_left);
1164         top = ev_link_dest_get_top (dest, &change_top);
1165
1166         zoom = zoom_for_size_best_fit (ev_link_dest_get_right (dest) - left,
1167                                        ev_link_dest_get_bottom (dest) - top,
1168                                        ev_view_get_width (view),
1169                                        ev_view_get_height (view), 0, 0);
1170
1171         ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1172         ev_view_set_zoom (view, zoom, FALSE);
1173
1174         doc_point.x = change_left ? left : 0;
1175         doc_point.y = change_top ? top : 0;
1176
1177         view->current_page = ev_link_dest_get_page (dest);
1178         if (change_left || change_top)
1179                 view->pending_point = doc_point;
1180         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1181
1182         gtk_widget_queue_resize (GTK_WIDGET (view));
1183 }
1184
1185 static void
1186 goto_fitv_dest (EvView *view, EvLinkDest *dest)
1187 {
1188         EvPoint doc_point;
1189         int doc_width, doc_height, page;
1190         double zoom, left;
1191         gboolean change_left;
1192
1193         page = ev_link_dest_get_page (dest);
1194         ev_page_cache_get_size (view->page_cache, page, 0, 1.0, &doc_width, &doc_height);
1195
1196         left = ev_link_dest_get_left (dest, &change_left);
1197         doc_point.x = change_left ? left : 0;
1198         doc_point.y = 0;
1199
1200         zoom = zoom_for_size_fit_height (doc_width - doc_point.x , doc_height,
1201                                          ev_view_get_width (view),
1202                                          ev_view_get_height (view), 0);
1203
1204         ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1205         ev_view_set_zoom (view, zoom, FALSE);
1206
1207         view->current_page = page;
1208         if (change_left)
1209                 view->pending_point = doc_point;
1210         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1211
1212         gtk_widget_queue_resize (GTK_WIDGET (view));
1213 }
1214
1215 static void
1216 goto_fith_dest (EvView *view, EvLinkDest *dest)
1217 {
1218         EvPoint doc_point;
1219         int doc_width, doc_height, page;
1220         gdouble zoom, top;
1221         gboolean change_top;
1222
1223         page = ev_link_dest_get_page (dest);
1224         ev_page_cache_get_size (view->page_cache, page, 0, 1.0, &doc_width, &doc_height);
1225
1226         top = ev_link_dest_get_top (dest, &change_top);
1227
1228         doc_point.x = 0;
1229         doc_point.y = change_top ? top : 0;
1230
1231         zoom = zoom_for_size_fit_width (doc_width, top,
1232                                         ev_view_get_width (view),
1233                                         ev_view_get_height (view), 0);
1234
1235         ev_view_set_sizing_mode (view, EV_SIZING_FIT_WIDTH);
1236         ev_view_set_zoom (view, zoom, FALSE);
1237
1238         view->current_page = page;
1239         if (change_top)
1240                 view->pending_point = doc_point;
1241         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1242
1243         gtk_widget_queue_resize (GTK_WIDGET (view));
1244 }
1245
1246 static void
1247 goto_fit_dest (EvView *view, EvLinkDest *dest)
1248 {
1249         double zoom;
1250         int doc_width, doc_height;
1251         int page;
1252
1253         page = ev_link_dest_get_page (dest);
1254         ev_page_cache_get_size (view->page_cache, page, 0, 1.0, &doc_width, &doc_height);
1255
1256         zoom = zoom_for_size_best_fit (doc_width, doc_height, ev_view_get_width (view),
1257                                        ev_view_get_height (view), 0, 0);
1258
1259         ev_view_set_sizing_mode (view, EV_SIZING_BEST_FIT);
1260         ev_view_set_zoom (view, zoom, FALSE);
1261
1262         view->current_page = page;
1263         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1264
1265         gtk_widget_queue_resize (GTK_WIDGET (view));
1266 }
1267
1268 static void
1269 goto_xyz_dest (EvView *view, EvLinkDest *dest)
1270 {
1271         EvPoint doc_point;
1272         gint page;
1273         gdouble zoom, left, top;
1274         gboolean change_zoom, change_left, change_top;
1275
1276         zoom = ev_link_dest_get_zoom (dest, &change_zoom);
1277         page = ev_link_dest_get_page (dest);
1278
1279         if (change_zoom && zoom > 1) {
1280                 ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1281                 ev_view_set_zoom (view, zoom, FALSE);
1282         }
1283
1284         left = ev_link_dest_get_left (dest, &change_left);
1285         top = ev_link_dest_get_top (dest, &change_top);
1286
1287         doc_point.x = change_left ? left : 0;
1288         doc_point.y = change_top ? top : 0;
1289
1290         view->current_page = page;
1291         if (change_left || change_top)
1292                 view->pending_point = doc_point;
1293         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1294
1295         gtk_widget_queue_resize (GTK_WIDGET (view));
1296 }
1297
1298 static void
1299 goto_dest (EvView *view, EvLinkDest *dest)
1300 {
1301         EvLinkDestType type;
1302         int page, n_pages, current_page;
1303
1304         page = ev_link_dest_get_page (dest);
1305         n_pages = ev_page_cache_get_n_pages (view->page_cache);
1306
1307         if (page < 0 || page >= n_pages)
1308                 return;
1309
1310         current_page = view->current_page;
1311
1312         type = ev_link_dest_get_dest_type (dest);
1313
1314         switch (type) {
1315                 case EV_LINK_DEST_TYPE_PAGE:
1316                         ev_page_cache_set_current_page (view->page_cache, page);
1317                         break;
1318                 case EV_LINK_DEST_TYPE_FIT:
1319                         goto_fit_dest (view, dest);
1320                         break;
1321                 case EV_LINK_DEST_TYPE_FITH:
1322                         goto_fith_dest (view, dest);
1323                         break;
1324                 case EV_LINK_DEST_TYPE_FITV:
1325                         goto_fitv_dest (view, dest);
1326                         break;
1327                 case EV_LINK_DEST_TYPE_FITR:
1328                         goto_fitr_dest (view, dest);
1329                         break;
1330                 case EV_LINK_DEST_TYPE_XYZ:
1331                         goto_xyz_dest (view, dest);
1332                         break;
1333                 case EV_LINK_DEST_TYPE_PAGE_LABEL:
1334                         ev_page_cache_set_page_label (view->page_cache, ev_link_dest_get_page_label (dest));
1335                         break;
1336                 default:
1337                         g_assert_not_reached ();
1338         }
1339
1340         if (current_page != view->current_page)
1341                 ev_page_cache_set_current_page (view->page_cache,
1342                                                 view->current_page);
1343 }
1344
1345 static void
1346 ev_view_goto_dest (EvView *view, EvLinkDest *dest)
1347 {
1348         EvLinkDestType type;
1349
1350         type = ev_link_dest_get_dest_type (dest);
1351
1352         if (type == EV_LINK_DEST_TYPE_NAMED) {
1353                 EvLinkDest  *dest2;
1354                 const gchar *named_dest;
1355
1356                 named_dest = ev_link_dest_get_named_dest (dest);
1357                 dest2 = ev_document_links_find_link_dest (EV_DOCUMENT_LINKS (view->document),
1358                                                           named_dest);
1359                 if (dest2) {
1360                         goto_dest (view, dest2);
1361                         g_object_unref (dest2);
1362                 }
1363
1364                 return;
1365         }
1366
1367         goto_dest (view, dest);
1368 }
1369
1370 void
1371 ev_view_handle_link (EvView *view, EvLink *link)
1372 {
1373         EvLinkAction    *action = NULL;
1374         EvLinkActionType type;
1375
1376         action = ev_link_get_action (link);
1377         if (!action)
1378                 return;
1379
1380         type = ev_link_action_get_action_type (action);
1381
1382         switch (type) {
1383                 case EV_LINK_ACTION_TYPE_GOTO_DEST: {
1384                         EvLinkDest *dest;
1385
1386                         g_signal_emit (view, signals[SIGNAL_HANDLE_LINK], 0, link);
1387
1388                         dest = ev_link_action_get_dest (action);
1389                         ev_view_goto_dest (view, dest);
1390                 }
1391                         break;
1392                 case EV_LINK_ACTION_TYPE_GOTO_REMOTE:
1393                 case EV_LINK_ACTION_TYPE_EXTERNAL_URI:
1394                 case EV_LINK_ACTION_TYPE_LAUNCH:
1395                 case EV_LINK_ACTION_TYPE_NAMED:
1396                         g_signal_emit (view, signals[SIGNAL_EXTERNAL_LINK], 0, action);
1397                         break;
1398         }
1399 }
1400
1401 gchar *
1402 ev_view_page_label_from_dest (EvView *view, EvLinkDest *dest)
1403 {
1404         EvLinkDestType type;
1405         gchar *msg = NULL;
1406
1407         type = ev_link_dest_get_dest_type (dest);
1408
1409         switch (type) {
1410                 case EV_LINK_DEST_TYPE_NAMED: {
1411                         EvLinkDest  *dest2;
1412                         const gchar *named_dest;
1413
1414                         named_dest = ev_link_dest_get_named_dest (dest);
1415                         dest2 = ev_document_links_find_link_dest (EV_DOCUMENT_LINKS (view->document),
1416                                                                   named_dest);
1417                         if (dest2) {
1418                                 msg = ev_page_cache_get_page_label (view->page_cache,
1419                                                                     ev_link_dest_get_page (dest2));
1420                                 g_object_unref (dest2);
1421                         }
1422                 }
1423
1424                         break;
1425                 case EV_LINK_DEST_TYPE_PAGE_LABEL: {
1426                         msg = g_strdup (ev_link_dest_get_page_label (dest));
1427                 }
1428                         break;
1429                 default:
1430                         msg = ev_page_cache_get_page_label (view->page_cache,
1431                                                             ev_link_dest_get_page (dest));
1432         }
1433
1434         return msg;
1435 }
1436
1437 static char *
1438 tip_from_action_named (EvLinkAction *action)
1439 {
1440         const gchar *name = ev_link_action_get_name (action);
1441
1442         if (g_ascii_strcasecmp (name, "FirstPage") == 0) {
1443                 return g_strdup (_("Go to first page"));
1444         } else if (g_ascii_strcasecmp (name, "PrevPage") == 0) {
1445                 return g_strdup (_("Go to previous page"));
1446         } else if (g_ascii_strcasecmp (name, "NextPage") == 0) {
1447                 return g_strdup (_("Go to next page"));
1448         } else if (g_ascii_strcasecmp (name, "LastPage") == 0) {
1449                 return g_strdup (_("Go to last page"));
1450         } else if (g_ascii_strcasecmp (name, "GoToPage") == 0) {
1451                 return g_strdup (_("Go to page"));
1452         } else if (g_ascii_strcasecmp (name, "Find") == 0) {
1453                 return g_strdup (_("Find"));
1454         }
1455
1456         return NULL;
1457 }
1458
1459 static char *
1460 tip_from_link (EvView *view, EvLink *link)
1461 {
1462         EvLinkAction *action;
1463         EvLinkActionType type;
1464         char *msg = NULL;
1465         char *page_label;
1466         const char *title;
1467
1468         action = ev_link_get_action (link);
1469         title = ev_link_get_title (link);
1470
1471         if (!action)
1472                 return title ? g_strdup (title) : NULL;
1473
1474         type = ev_link_action_get_action_type (action);
1475
1476         switch (type) {
1477                 case EV_LINK_ACTION_TYPE_GOTO_DEST:
1478                         page_label = ev_view_page_label_from_dest (view,
1479                                                                    ev_link_action_get_dest (action));
1480                         if (page_label) {
1481                                 msg = g_strdup_printf (_("Go to page %s"), page_label);
1482                                 g_free (page_label);
1483                         }
1484                         break;
1485                 case EV_LINK_ACTION_TYPE_GOTO_REMOTE:
1486                         if (title) {
1487                                 msg = g_strdup_printf (_("Go to %s on file “%s”"), title,
1488                                                        ev_link_action_get_filename (action));
1489                         } else {
1490                                 msg = g_strdup_printf (_("Go to file “%s”"),
1491                                                        ev_link_action_get_filename (action));
1492                         }
1493                         break;
1494                 case EV_LINK_ACTION_TYPE_EXTERNAL_URI:
1495                         msg = g_strdup (ev_link_action_get_uri (action));
1496                         break;
1497                 case EV_LINK_ACTION_TYPE_LAUNCH:
1498                         msg = g_strdup_printf (_("Launch %s"),
1499                                                ev_link_action_get_filename (action));
1500                         break;
1501                 case EV_LINK_ACTION_TYPE_NAMED:
1502                         msg = tip_from_action_named (action);
1503                         break;
1504                 default:
1505                         if (title)
1506                                 msg = g_strdup (title);
1507                         break;
1508         }
1509
1510         return msg;
1511 }
1512
1513 static void
1514 ev_view_handle_cursor_over_xy (EvView *view, gint x, gint y)
1515 {
1516         EvLink      *link;
1517         EvFormField *field;
1518
1519         if (view->cursor == EV_VIEW_CURSOR_HIDDEN)
1520                 return;
1521
1522         if (view->drag_info.in_drag) {
1523                 if (view->cursor != EV_VIEW_CURSOR_DRAG)
1524                         ev_view_set_cursor (view, EV_VIEW_CURSOR_DRAG);
1525                 return;
1526         }
1527
1528         if (view->scroll_info.autoscrolling) {
1529                 if (view->cursor != EV_VIEW_CURSOR_AUTOSCROLL)
1530                         ev_view_set_cursor (view, EV_VIEW_CURSOR_AUTOSCROLL);
1531                 return;
1532         }
1533
1534         link = ev_view_get_link_at_location (view, x, y);
1535
1536 #if !GTK_CHECK_VERSION (2, 11, 7)
1537         if (view->link_tooltip == NULL) {
1538                 view->link_tooltip = ev_tooltip_new (GTK_WIDGET (view));
1539         }
1540
1541         if (view->hovered_link != link) {
1542                 view->hovered_link = link;
1543                 ev_tooltip_deactivate (EV_TOOLTIP (view->link_tooltip));
1544         }
1545 #endif
1546
1547         if (link) {
1548 #if GTK_CHECK_VERSION (2, 11, 7)
1549                 g_object_set (view, "has-tooltip", TRUE, NULL);
1550 #else
1551                 char *msg = tip_from_link (view, link);
1552
1553                 if (msg && g_utf8_validate (msg, -1, NULL)) {
1554                         EvTooltip *tooltip = EV_TOOLTIP (view->link_tooltip);
1555
1556                         ev_tooltip_set_position (tooltip, x, y);
1557                         ev_tooltip_set_text (tooltip, msg);
1558                         ev_tooltip_activate (tooltip);
1559                 }
1560                 g_free (msg);
1561 #endif
1562                 ev_view_set_cursor (view, EV_VIEW_CURSOR_LINK);
1563         } else if ((field = ev_view_get_form_field_at_location (view, x, y))) {
1564                 if (field->is_read_only) {
1565                         if (view->cursor == EV_VIEW_CURSOR_LINK ||
1566                             view->cursor == EV_VIEW_CURSOR_IBEAM ||
1567                             view->cursor == EV_VIEW_CURSOR_DRAG)
1568                                 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
1569                 } else if (EV_IS_FORM_FIELD_TEXT (field)) {
1570                         ev_view_set_cursor (view, EV_VIEW_CURSOR_IBEAM);
1571                 } else {
1572                         ev_view_set_cursor (view, EV_VIEW_CURSOR_LINK);
1573                 }
1574         } else if (location_in_text (view, x + view->scroll_x, y + view->scroll_y)) {
1575                 ev_view_set_cursor (view, EV_VIEW_CURSOR_IBEAM);
1576         } else {
1577                 if (view->cursor == EV_VIEW_CURSOR_LINK ||
1578                     view->cursor == EV_VIEW_CURSOR_IBEAM ||
1579                     view->cursor == EV_VIEW_CURSOR_DRAG ||
1580                     view->cursor == EV_VIEW_CURSOR_AUTOSCROLL)
1581                         ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
1582         }
1583 }
1584
1585 /*** Images ***/
1586 static EvImage *
1587 ev_view_get_image_at_location (EvView  *view,
1588                                gdouble  x,
1589                                gdouble  y)
1590 {
1591         gint page = -1;
1592         gint x_offset = 0, y_offset = 0;
1593         gint x_new = 0, y_new = 0;
1594         GList *image_mapping;
1595
1596         if (!EV_IS_DOCUMENT_IMAGES (view->document))
1597                 return NULL;
1598
1599         x += view->scroll_x;
1600         y += view->scroll_y;
1601
1602         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1603
1604         if (page == -1)
1605                 return NULL;
1606
1607         if (get_doc_point_from_offset (view, page, x_offset,
1608                                        y_offset, &x_new, &y_new) == FALSE)
1609                 return NULL;
1610
1611         image_mapping = ev_pixbuf_cache_get_image_mapping (view->pixbuf_cache, page);
1612
1613         if (image_mapping)
1614                 return ev_image_mapping_find (image_mapping, x_new, y_new);
1615         else
1616                 return NULL;
1617 }
1618
1619 /*** Forms ***/
1620 static EvFormField *
1621 ev_view_get_form_field_at_location (EvView  *view,
1622                                     gdouble  x,
1623                                     gdouble  y)
1624 {
1625         gint page = -1;
1626         gint x_offset = 0, y_offset = 0;
1627         gint x_new = 0, y_new = 0;
1628         GList *forms_mapping;
1629
1630         if (!EV_IS_DOCUMENT_FORMS (view->document))
1631                 return NULL;
1632
1633         x += view->scroll_x;
1634         y += view->scroll_y;
1635
1636         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1637
1638         if (page == -1)
1639                 return NULL;
1640
1641         if (get_doc_point_from_offset (view, page, x_offset,
1642                                        y_offset, &x_new, &y_new) == FALSE)
1643                 return NULL;
1644
1645         forms_mapping = ev_pixbuf_cache_get_form_field_mapping (view->pixbuf_cache, page);
1646
1647         if (forms_mapping)
1648                 return ev_form_field_mapping_find (forms_mapping, x_new, y_new);
1649         else
1650                 return NULL;
1651 }
1652
1653 static GdkRegion *
1654 ev_view_form_field_get_region (EvView      *view,
1655                                EvFormField *field)
1656 {
1657         EvRectangle  field_area;
1658         GdkRectangle view_area;
1659         GList       *forms_mapping;
1660
1661         forms_mapping = ev_pixbuf_cache_get_form_field_mapping (view->pixbuf_cache,
1662                                                                 field->page->index);
1663         ev_form_field_mapping_get_area (forms_mapping, field, &field_area);
1664         doc_rect_to_view_rect (view, field->page->index, &field_area, &view_area);
1665         view_area.x -= view->scroll_x;
1666         view_area.y -= view->scroll_y;
1667
1668         return gdk_region_rectangle (&view_area);
1669 }
1670
1671 static gboolean
1672 ev_view_forms_remove_widgets (EvView *view)
1673 {
1674         ev_view_remove_all (view);
1675
1676         return FALSE;
1677 }
1678
1679 static void
1680 ev_view_form_field_destroy (GtkWidget *widget,
1681                             EvView    *view)
1682 {
1683         g_idle_add ((GSourceFunc)ev_view_forms_remove_widgets, view);
1684 }
1685
1686 static GtkWidget *
1687 ev_view_form_field_button_create_widget (EvView      *view,
1688                                          EvFormField *field)
1689 {
1690         EvFormFieldButton *field_button = EV_FORM_FIELD_BUTTON (field);
1691         GdkRegion         *field_region = NULL;
1692
1693         switch (field_button->type) {
1694                 case EV_FORM_FIELD_BUTTON_PUSH:
1695                         return NULL;
1696                 case EV_FORM_FIELD_BUTTON_CHECK:
1697                 case EV_FORM_FIELD_BUTTON_RADIO: {
1698                         gboolean  state;
1699                         GList    *forms_mapping, *l;
1700
1701                         state = ev_document_forms_form_field_button_get_state (EV_DOCUMENT_FORMS (view->document),
1702                                                                                field);
1703
1704                         /* FIXME: it actually depends on NoToggleToOff flags */
1705                         if (field_button->type == EV_FORM_FIELD_BUTTON_RADIO &&
1706                             state && field_button->state)
1707                                 return NULL;
1708
1709                         field_region = ev_view_form_field_get_region (view, field);
1710
1711                         /* For radio buttons and checkbox buttons that are in a set
1712                          * we need to update also the region for the current selected item
1713                          */
1714                         forms_mapping = ev_pixbuf_cache_get_form_field_mapping (view->pixbuf_cache,
1715                                                                                 field->page->index);
1716                         for (l = forms_mapping; l; l = g_list_next (l)) {
1717                                 EvFormField *button = ((EvFormFieldMapping *)(l->data))->field;
1718                                 GdkRegion   *button_region;
1719
1720                                 if (button->id == field->id)
1721                                         continue;
1722
1723                                 /* FIXME: only buttons in the same group should be updated */
1724                                 if (!EV_IS_FORM_FIELD_BUTTON (button) ||
1725                                     EV_FORM_FIELD_BUTTON (button)->type != field_button->type ||
1726                                     EV_FORM_FIELD_BUTTON (button)->state != TRUE)
1727                                         continue;
1728
1729                                 button_region = ev_view_form_field_get_region (view, button);
1730                                 gdk_region_union (field_region, button_region);
1731                                 gdk_region_destroy (button_region);
1732                         }
1733
1734                         ev_document_forms_form_field_button_set_state (EV_DOCUMENT_FORMS (view->document),
1735                                                                        field, !state);
1736                         field_button->state = !state;
1737                 }
1738                         break;
1739         }
1740
1741         ev_pixbuf_cache_reload_page (view->pixbuf_cache,
1742                                      field_region,
1743                                      field->page->index,
1744                                      view->rotation,
1745                                      view->scale);
1746         gdk_region_destroy (field_region);
1747
1748         return NULL;
1749 }
1750
1751 static void
1752 ev_view_form_field_text_save (EvView    *view,
1753                               GtkWidget *widget)
1754 {
1755         EvFormField *field;
1756
1757         if (!view->document)
1758                 return;
1759
1760         field = g_object_get_data (G_OBJECT (widget), "form-field");
1761
1762         if (field->changed) {
1763                 EvFormFieldText *field_text = EV_FORM_FIELD_TEXT (field);
1764                 GdkRegion       *field_region;
1765
1766                 field_region = ev_view_form_field_get_region (view, field);
1767
1768                 ev_document_forms_form_field_text_set_text (EV_DOCUMENT_FORMS (view->document),
1769                                                             field, field_text->text);
1770                 field->changed = FALSE;
1771                 ev_pixbuf_cache_reload_page (view->pixbuf_cache,
1772                                              field_region,
1773                                              field->page->index,
1774                                              view->rotation,
1775                                              view->scale);
1776                 gdk_region_destroy (field_region);
1777         }
1778 }
1779
1780 static void
1781 ev_view_form_field_text_changed (GtkWidget   *widget,
1782                                  EvFormField *field)
1783 {
1784         EvFormFieldText *field_text = EV_FORM_FIELD_TEXT (field);
1785         gchar           *text = NULL;
1786
1787         if (GTK_IS_ENTRY (widget)) {
1788                 text = g_strdup (gtk_entry_get_text (GTK_ENTRY (widget)));
1789         } else if (GTK_IS_TEXT_BUFFER (widget)) {
1790                 GtkTextIter start, end;
1791
1792                 gtk_text_buffer_get_bounds (GTK_TEXT_BUFFER (widget), &start, &end);
1793                 text = gtk_text_buffer_get_text (GTK_TEXT_BUFFER (widget),
1794                                                  &start, &end, FALSE);
1795         }
1796
1797         if (!field_text->text ||
1798             (field_text->text && g_ascii_strcasecmp (field_text->text, text) != 0)) {
1799                 g_free (field_text->text);
1800                 field_text->text = text;
1801                 field->changed = TRUE;
1802         }
1803 }
1804
1805 static GtkWidget *
1806 ev_view_form_field_text_create_widget (EvView      *view,
1807                                        EvFormField *field)
1808 {
1809         EvFormFieldText *field_text = EV_FORM_FIELD_TEXT (field);
1810         GtkWidget       *text = NULL;
1811         gchar           *txt;
1812
1813         txt = ev_document_forms_form_field_text_get_text (EV_DOCUMENT_FORMS (view->document),
1814                                                           field);
1815
1816         switch (field_text->type) {
1817                 case EV_FORM_FIELD_TEXT_FILE_SELECT:
1818                         /* TODO */
1819                 case EV_FORM_FIELD_TEXT_NORMAL:
1820                         text = gtk_entry_new ();
1821                         gtk_entry_set_has_frame (GTK_ENTRY (text), FALSE);
1822                         gtk_entry_set_max_length (GTK_ENTRY (text), field_text->max_len);
1823                         gtk_entry_set_visibility (GTK_ENTRY (text), !field_text->is_password);
1824
1825                         if (txt) {
1826                                 gtk_entry_set_text (GTK_ENTRY (text), txt);
1827                                 g_free (txt);
1828                         }
1829
1830                         g_signal_connect (G_OBJECT (text), "changed",
1831                                           G_CALLBACK (ev_view_form_field_text_changed),
1832                                           field);
1833                         g_signal_connect_after (G_OBJECT (text), "activate",
1834                                                 G_CALLBACK (ev_view_form_field_destroy),
1835                                                 view);
1836                         break;
1837                 case EV_FORM_FIELD_TEXT_MULTILINE: {
1838                         GtkTextBuffer *buffer;
1839
1840                         text = gtk_text_view_new ();
1841                         buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (text));
1842
1843                         if (txt) {
1844                                 gtk_text_buffer_set_text (buffer, txt, -1);
1845                                 g_free (txt);
1846                         }
1847
1848                         g_signal_connect (G_OBJECT (buffer), "changed",
1849                                           G_CALLBACK (ev_view_form_field_text_changed),
1850                                           field);
1851                 }
1852                         break;
1853         }
1854
1855         g_object_weak_ref (G_OBJECT (text),
1856                            (GWeakNotify)ev_view_form_field_text_save,
1857                            view);
1858
1859         return text;
1860 }
1861
1862 static void
1863 ev_view_form_field_choice_save (EvView    *view,
1864                                 GtkWidget *widget)
1865 {
1866         EvFormField *field;
1867
1868         if (!view->document)
1869                 return;
1870
1871         field = g_object_get_data (G_OBJECT (widget), "form-field");
1872
1873         if (field->changed) {
1874                 GList             *l;
1875                 EvFormFieldChoice *field_choice = EV_FORM_FIELD_CHOICE (field);
1876                 GdkRegion         *field_region;
1877
1878                 field_region = ev_view_form_field_get_region (view, field);
1879
1880                 if (field_choice->is_editable) {
1881                         ev_document_forms_form_field_choice_set_text (EV_DOCUMENT_FORMS (view->document),
1882                                                                       field, field_choice->text);
1883                 } else {
1884                         ev_document_forms_form_field_choice_unselect_all (EV_DOCUMENT_FORMS (view->document), field);
1885                         for (l = field_choice->selected_items; l; l = g_list_next (l)) {
1886                                 ev_document_forms_form_field_choice_select_item (EV_DOCUMENT_FORMS (view->document),
1887                                                                                  field,
1888                                                                                  GPOINTER_TO_INT (l->data));
1889                         }
1890                 }
1891                 field->changed = FALSE;
1892                 ev_pixbuf_cache_reload_page (view->pixbuf_cache,
1893                                              field_region,
1894                                              field->page->index,
1895                                              view->rotation,
1896                                              view->scale);
1897                 gdk_region_destroy (field_region);
1898         }
1899 }
1900
1901 static void
1902 ev_view_form_field_choice_changed (GtkWidget   *widget,
1903                                    EvFormField *field)
1904 {
1905         EvFormFieldChoice *field_choice = EV_FORM_FIELD_CHOICE (field);
1906
1907         if (GTK_IS_COMBO_BOX (widget)) {
1908                 gint item;
1909
1910                 item = gtk_combo_box_get_active (GTK_COMBO_BOX (widget));
1911                 if (!field_choice->selected_items ||
1912                     GPOINTER_TO_INT (field_choice->selected_items->data) != item) {
1913                         g_list_free (field_choice->selected_items);
1914                         field_choice->selected_items = NULL;
1915                         field_choice->selected_items = g_list_prepend (field_choice->selected_items,
1916                                                                        GINT_TO_POINTER (item));
1917                         field->changed = TRUE;
1918                 }
1919
1920                 if (GTK_IS_COMBO_BOX_ENTRY (widget)) {
1921                         gchar *text;
1922
1923                         text = gtk_combo_box_get_active_text (GTK_COMBO_BOX (widget));
1924                         if (!field_choice->text ||
1925                             (field_choice->text && g_ascii_strcasecmp (field_choice->text, text) != 0)) {
1926                                 g_free (field_choice->text);
1927                                 field_choice->text = text;
1928                                 field->changed = TRUE;
1929                         }
1930                 }
1931         } else if (GTK_IS_TREE_SELECTION (widget)) {
1932                 GtkTreeSelection *selection = GTK_TREE_SELECTION (widget);
1933                 GtkTreeModel     *model;
1934                 GList            *items, *l;
1935
1936                 items = gtk_tree_selection_get_selected_rows (selection, &model);
1937                 g_list_free (field_choice->selected_items);
1938                 field_choice->selected_items = NULL;
1939
1940                 for (l = items; l && l->data; l = g_list_next (l)) {
1941                         GtkTreeIter  iter;
1942                         GtkTreePath *path = (GtkTreePath *)l->data;
1943                         gint         item;
1944
1945                         gtk_tree_model_get_iter (model, &iter, path);
1946                         gtk_tree_model_get (model, &iter, 1, &item, -1);
1947
1948                         field_choice->selected_items = g_list_prepend (field_choice->selected_items,
1949                                                                        GINT_TO_POINTER (item));
1950
1951                         gtk_tree_path_free (path);
1952                 }
1953
1954                 g_list_free (items);
1955
1956                 field->changed = TRUE;
1957         }
1958 }
1959
1960 static GtkWidget *
1961 ev_view_form_field_choice_create_widget (EvView      *view,
1962                                          EvFormField *field)
1963 {
1964         EvFormFieldChoice *field_choice = EV_FORM_FIELD_CHOICE (field);
1965         GtkWidget         *choice;
1966         GtkTreeModel      *model;
1967         gint               n_items, i;
1968         gint               selected_item = 0;
1969
1970         n_items = ev_document_forms_form_field_choice_get_n_items (EV_DOCUMENT_FORMS (view->document),
1971                                                                    field);
1972         model = GTK_TREE_MODEL (gtk_list_store_new (2, G_TYPE_STRING, G_TYPE_INT));
1973         for (i = 0; i < n_items; i++) {
1974                 GtkTreeIter iter;
1975                 gchar      *item;
1976
1977                 item = ev_document_forms_form_field_choice_get_item (EV_DOCUMENT_FORMS (view->document),
1978                                                                      field, i);
1979                 if (ev_document_forms_form_field_choice_is_item_selected (
1980                             EV_DOCUMENT_FORMS (view->document), field, i)) {
1981                         selected_item = i;
1982                         /* FIXME: we need a get_selected_items function in poppler */
1983                         field_choice->selected_items = g_list_prepend (field_choice->selected_items,
1984                                                                        GINT_TO_POINTER (i));
1985                 }
1986
1987                 if (item) {
1988                         gtk_list_store_append (GTK_LIST_STORE (model), &iter);
1989                         gtk_list_store_set (GTK_LIST_STORE (model), &iter,
1990                                             0, item,
1991                                             1, i,
1992                                             -1);
1993                         g_free (item);
1994                 }
1995         }
1996
1997         if (field_choice->type == EV_FORM_FIELD_CHOICE_LIST) {
1998                 GtkCellRenderer  *renderer;
1999                 GtkWidget        *tree_view;
2000                 GtkTreeSelection *selection;
2001
2002                 tree_view = gtk_tree_view_new_with_model (model);
2003                 gtk_tree_view_set_headers_visible (GTK_TREE_VIEW (tree_view), FALSE);
2004
2005                 selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (tree_view));
2006                 if (field_choice->multi_select) {
2007                         gtk_tree_selection_set_mode (selection, GTK_SELECTION_MULTIPLE);
2008                 }
2009
2010                 /* TODO: set selected items */
2011
2012                 renderer = gtk_cell_renderer_text_new ();
2013                 gtk_tree_view_insert_column_with_attributes (GTK_TREE_VIEW (tree_view),
2014                                                              0,
2015                                                              "choix", renderer,
2016                                                              "text", 0,
2017                                                              NULL);
2018
2019                 choice = gtk_scrolled_window_new (NULL, NULL);
2020                 gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (choice),
2021                                                 GTK_POLICY_AUTOMATIC,
2022                                                 GTK_POLICY_AUTOMATIC);
2023                 gtk_container_add (GTK_CONTAINER (choice), tree_view);
2024                 gtk_widget_show (tree_view);
2025
2026                 g_signal_connect (G_OBJECT (selection), "changed",
2027                                   G_CALLBACK (ev_view_form_field_choice_changed),
2028                                   field);
2029                 g_signal_connect_after (G_OBJECT (selection), "changed",
2030                                         G_CALLBACK (ev_view_form_field_destroy),
2031                                         view);
2032         } else if (field_choice->is_editable) { /* ComboBoxEntry */
2033                 gchar *text;
2034
2035                 choice = gtk_combo_box_entry_new_with_model (model, 0);
2036                 text = ev_document_forms_form_field_choice_get_text (EV_DOCUMENT_FORMS (view->document), field);
2037                 if (text) {
2038                         gtk_entry_set_text (GTK_ENTRY (gtk_bin_get_child (GTK_BIN (choice))), text);
2039                         g_free (text);
2040                 }
2041
2042                 g_signal_connect (G_OBJECT (choice), "changed",
2043                                   G_CALLBACK (ev_view_form_field_choice_changed),
2044                                   field);
2045                 g_signal_connect_after (G_OBJECT (GTK_BIN (choice)->child), "activate",
2046                                         G_CALLBACK (ev_view_form_field_destroy),
2047                                         view);
2048         } else { /* ComboBoxText */
2049                 GtkCellRenderer *renderer;
2050
2051                 choice = gtk_combo_box_new_with_model (model);
2052                 renderer = gtk_cell_renderer_text_new ();
2053                 gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (choice),
2054                                             renderer, TRUE);
2055                 gtk_cell_layout_set_attributes (GTK_CELL_LAYOUT (choice),
2056                                                 renderer,
2057                                                 "text", 0,
2058                                                 NULL);
2059                 gtk_combo_box_set_active (GTK_COMBO_BOX (choice), selected_item);
2060                 gtk_combo_box_popup (GTK_COMBO_BOX (choice));
2061
2062                 g_signal_connect (G_OBJECT (choice), "changed",
2063                                   G_CALLBACK (ev_view_form_field_choice_changed),
2064                                   field);
2065                 g_signal_connect_after (G_OBJECT (choice), "changed",
2066                                         G_CALLBACK (ev_view_form_field_destroy),
2067                                         view);
2068         }
2069
2070         g_object_unref (model);
2071
2072         g_object_weak_ref (G_OBJECT (choice),
2073                            (GWeakNotify)ev_view_form_field_choice_save,
2074                            view);
2075
2076         return choice;
2077 }
2078
2079 static void
2080 ev_view_handle_form_field (EvView      *view,
2081                            EvFormField *field,
2082                            gdouble      x,
2083                            gdouble      y)
2084 {
2085         GtkWidget   *field_widget = NULL;
2086         GList       *form_field_mapping;
2087         EvRectangle  field_area;
2088         GdkRectangle view_area;
2089
2090         if (field->is_read_only)
2091                 return;
2092
2093         if (EV_IS_FORM_FIELD_BUTTON (field)) {
2094                 field_widget = ev_view_form_field_button_create_widget (view, field);
2095         } else if (EV_IS_FORM_FIELD_TEXT (field)) {
2096                 field_widget = ev_view_form_field_text_create_widget (view, field);
2097         } else if (EV_IS_FORM_FIELD_CHOICE (field)) {
2098                 field_widget = ev_view_form_field_choice_create_widget (view, field);
2099         } else if (EV_IS_FORM_FIELD_SIGNATURE (field)) {
2100                 /* TODO */
2101         }
2102
2103         /* Form field doesn't require a widget */
2104         if (!field_widget)
2105                 return;
2106
2107         g_object_set_data_full (G_OBJECT (field_widget), "form-field",
2108                                 g_object_ref (field),
2109                                 (GDestroyNotify)g_object_unref);
2110
2111         form_field_mapping = ev_pixbuf_cache_get_form_field_mapping (view->pixbuf_cache, field->page->index);
2112         ev_form_field_mapping_get_area (form_field_mapping, field, &field_area);
2113
2114         doc_rect_to_view_rect (view, field->page->index, &field_area, &view_area);
2115         view_area.x -= view->scroll_x;
2116         view_area.y -= view->scroll_y;
2117
2118         gtk_layout_put (GTK_LAYOUT (view), field_widget, view_area.x, view_area.y);
2119         gtk_widget_show (field_widget);
2120         gtk_widget_grab_focus (field_widget);
2121 }
2122
2123 /*** GtkWidget implementation ***/
2124
2125 static void
2126 ev_view_size_request_continuous_dual_page (EvView         *view,
2127                                            GtkRequisition *requisition)
2128 {
2129         int max_width;
2130         gint n_pages;
2131         GtkBorder border;
2132
2133         ev_page_cache_get_max_width (view->page_cache, view->rotation,
2134                                      view->scale, &max_width);
2135         compute_border (view, max_width, max_width, &border);
2136
2137         n_pages = ev_page_cache_get_n_pages (view->page_cache) + 1;
2138
2139         requisition->width = (max_width + border.left + border.right) * 2 + (view->spacing * 3);
2140         get_page_y_offset (view, n_pages, view->scale, &requisition->height);
2141
2142         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
2143                 requisition->width = 1;
2144         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
2145                 requisition->width = 1;
2146                 /* FIXME: This could actually be set on one page docs or docs
2147                  * with a strange aspect ratio. */
2148                 /* requisition->height = 1;*/
2149         }
2150 }
2151
2152 static void
2153 ev_view_size_request_continuous (EvView         *view,
2154                                  GtkRequisition *requisition)
2155 {
2156         int max_width;
2157         int n_pages;
2158         GtkBorder border;
2159
2160
2161         ev_page_cache_get_max_width (view->page_cache, view->rotation,
2162                                      view->scale, &max_width);
2163         n_pages = ev_page_cache_get_n_pages (view->page_cache);
2164         compute_border (view, max_width, max_width, &border);
2165
2166         requisition->width = max_width + (view->spacing * 2) + border.left + border.right;
2167         get_page_y_offset (view, n_pages, view->scale, &requisition->height);
2168
2169         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
2170                 requisition->width = 1;
2171         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
2172                 requisition->width = 1;
2173                 /* FIXME: This could actually be set on one page docs or docs
2174                  * with a strange aspect ratio. */
2175                 /* requisition->height = 1;*/
2176         }
2177 }
2178
2179 static void
2180 ev_view_size_request_dual_page (EvView         *view,
2181                                 GtkRequisition *requisition)
2182 {
2183         GtkBorder border;
2184         gint width, height;
2185
2186         /* Find the largest of the two. */
2187         ev_page_cache_get_size (view->page_cache,
2188                                 view->current_page,
2189                                 view->rotation,
2190                                 view->scale,
2191                                 &width, &height);
2192         if (view->current_page + 1 < ev_page_cache_get_n_pages (view->page_cache)) {
2193                 gint width_2, height_2;
2194                 ev_page_cache_get_size (view->page_cache,
2195                                         view->current_page + 1,
2196                                         view->rotation,
2197                                         view->scale,
2198                                         &width_2, &height_2);
2199                 if (width_2 > width) {
2200                         width = width_2;
2201                         height = height_2;
2202                 }
2203         }
2204         compute_border (view, width, height, &border);
2205
2206         requisition->width = ((width + border.left + border.right) * 2) +
2207                 (view->spacing * 3);
2208         requisition->height = (height + border.top + border.bottom) +
2209                 (view->spacing * 2);
2210
2211         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
2212                 requisition->width = 1;
2213         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
2214                 requisition->width = 1;
2215                 requisition->height = 1;
2216         }
2217 }
2218
2219 static void
2220 ev_view_size_request_single_page (EvView         *view,
2221                                   GtkRequisition *requisition)
2222 {
2223         GtkBorder border;
2224         gint width, height;
2225
2226         ev_page_cache_get_size (view->page_cache,
2227                                 view->current_page,
2228                                 view->rotation,
2229                                 view->scale,
2230                                 &width, &height);
2231         compute_border (view, width, height, &border);
2232
2233         requisition->width = width + border.left + border.right + (2 * view->spacing);
2234         requisition->height = height + border.top + border.bottom + (2 * view->spacing);
2235
2236         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
2237                 requisition->width = 1;
2238                 requisition->height = height + border.top + border.bottom + (2 * view->spacing);
2239         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
2240                 requisition->width = 1;
2241                 requisition->height = 1;
2242         }
2243 }
2244
2245 static void
2246 ev_view_size_request (GtkWidget      *widget,
2247                       GtkRequisition *requisition)
2248 {
2249         EvView *view = EV_VIEW (widget);
2250
2251         if (view->document == NULL) {
2252                 requisition->width = 1;
2253                 requisition->height = 1;
2254                 return;
2255         }
2256
2257         if (view->presentation) {
2258                 requisition->width = 1;
2259                 requisition->height = 1;
2260                 return;
2261         }
2262
2263         if (view->continuous && view->dual_page)
2264                 ev_view_size_request_continuous_dual_page (view, requisition);
2265         else if (view->continuous)
2266                 ev_view_size_request_continuous (view, requisition);
2267         else if (view->dual_page)
2268                 ev_view_size_request_dual_page (view, requisition);
2269         else
2270                 ev_view_size_request_single_page (view, requisition);
2271 }
2272
2273 static void
2274 ev_view_size_allocate (GtkWidget      *widget,
2275                        GtkAllocation  *allocation)
2276 {
2277         EvView *view = EV_VIEW (widget);
2278         GList  *children, *l;
2279
2280         GTK_WIDGET_CLASS (ev_view_parent_class)->size_allocate (widget, allocation);
2281
2282         if (view->sizing_mode == EV_SIZING_FIT_WIDTH ||
2283             view->sizing_mode == EV_SIZING_BEST_FIT) {
2284
2285                 g_signal_emit (view, signals[SIGNAL_ZOOM_INVALID], 0);
2286
2287                 ev_view_size_request (widget, &widget->requisition);
2288         }
2289
2290         view_set_adjustment_values (view, GTK_ORIENTATION_HORIZONTAL);
2291         view_set_adjustment_values (view, GTK_ORIENTATION_VERTICAL);
2292
2293         if (view->document)
2294                 view_update_range_and_current_page (view);
2295
2296         view->pending_scroll = SCROLL_TO_KEEP_POSITION;
2297         view->pending_resize = FALSE;
2298
2299         children = gtk_container_get_children (GTK_CONTAINER (widget));
2300         for (l = children; l && l->data; l = g_list_next (l)) {
2301                 EvFormField   *field;
2302                 EvRectangle    field_area;
2303                 GdkRectangle   view_area;
2304                 GList         *form_field_mapping;
2305                 GtkAllocation  child_allocation;
2306                 GtkRequisition child_requisition;
2307                 GtkWidget     *child = (GtkWidget *)l->data;
2308
2309                 field = g_object_get_data (G_OBJECT (child), "form-field");
2310                 if (!field)
2311                         continue;
2312
2313                 form_field_mapping = ev_pixbuf_cache_get_form_field_mapping (view->pixbuf_cache,
2314                                                                              field->page->index);
2315                 ev_form_field_mapping_get_area (form_field_mapping, field, &field_area);
2316
2317                 doc_rect_to_view_rect (view, field->page->index, &field_area, &view_area);
2318                 view_area.x -= view->scroll_x;
2319                 view_area.y -= view->scroll_y;
2320
2321                 gtk_widget_size_request (child, &child_requisition);
2322                 if (child_requisition.width != view_area.width ||
2323                     child_requisition.height != view_area.height)
2324                         gtk_widget_set_size_request (child, view_area.width, view_area.height);
2325
2326                 gtk_container_child_get (GTK_CONTAINER (widget),
2327                                          child,
2328                                          "x", &child_allocation.x,
2329                                          "y", &child_allocation.y,
2330                                          NULL);
2331                 if (child_allocation.x != view_area.x ||
2332                     child_allocation.y != view_area.y) {
2333                         gtk_layout_move (GTK_LAYOUT (widget), child, view_area.x, view_area.y);
2334                 }
2335         }
2336         g_list_free (children);
2337 }
2338
2339 static void
2340 ev_view_realize (GtkWidget *widget)
2341 {
2342         EvView *view = EV_VIEW (widget);
2343
2344         if (GTK_WIDGET_CLASS (ev_view_parent_class)->realize)
2345                 (* GTK_WIDGET_CLASS (ev_view_parent_class)->realize) (widget);
2346
2347         gdk_window_set_events (view->layout.bin_window,
2348                                (gdk_window_get_events (view->layout.bin_window) |
2349                                 GDK_EXPOSURE_MASK |
2350                                 GDK_BUTTON_PRESS_MASK |
2351                                 GDK_BUTTON_RELEASE_MASK |
2352                                 GDK_SCROLL_MASK |
2353                                 GDK_KEY_PRESS_MASK |
2354                                 GDK_POINTER_MOTION_MASK |
2355                                 GDK_POINTER_MOTION_HINT_MASK |
2356                                 GDK_ENTER_NOTIFY_MASK |
2357                                 GDK_LEAVE_NOTIFY_MASK));
2358
2359         if (view->presentation)
2360                 gdk_window_set_background (view->layout.bin_window, &widget->style->black);
2361         else
2362                 gdk_window_set_background (view->layout.bin_window, &widget->style->mid [GTK_STATE_NORMAL]);
2363 }
2364
2365 static gboolean
2366 ev_view_scroll_event (GtkWidget *widget, GdkEventScroll *event)
2367 {
2368         EvView *view = EV_VIEW (widget);
2369         guint state;
2370
2371         state = event->state & gtk_accelerator_get_default_mod_mask ();
2372
2373         if (state == GDK_CONTROL_MASK && view->presentation == FALSE) {
2374                 ev_view_set_sizing_mode (view, EV_SIZING_FREE);
2375
2376                 if (event->direction == GDK_SCROLL_UP ||
2377                     event->direction == GDK_SCROLL_LEFT) {
2378                         if (ev_view_can_zoom_in (view)) {
2379                                 ev_view_zoom_in (view);
2380                         }
2381                 } else {
2382                         if (ev_view_can_zoom_out (view)) {
2383                                 ev_view_zoom_out (view);
2384                         }
2385                 }
2386
2387                 return TRUE;
2388         }
2389
2390         view->jump_to_find_result = FALSE;
2391
2392         /* Shift+Wheel scrolls the in the perpendicular direction */
2393         if (state & GDK_SHIFT_MASK) {
2394                 if (event->direction == GDK_SCROLL_UP)
2395                         event->direction = GDK_SCROLL_LEFT;
2396                 else if (event->direction == GDK_SCROLL_LEFT)
2397                         event->direction = GDK_SCROLL_UP;
2398                 else if (event->direction == GDK_SCROLL_DOWN)
2399                         event->direction = GDK_SCROLL_RIGHT;
2400                 else if (event->direction == GDK_SCROLL_RIGHT)
2401                         event->direction = GDK_SCROLL_DOWN;
2402
2403                 event->state &= ~GDK_SHIFT_MASK;
2404                 state &= ~GDK_SHIFT_MASK;
2405         }
2406
2407         if (state == 0 && view->presentation) {
2408                 switch (event->direction) {
2409                         case GDK_SCROLL_DOWN:
2410                         case GDK_SCROLL_RIGHT:
2411                                 ev_view_next_page (view);
2412                                 break;
2413                         case GDK_SCROLL_UP:
2414                         case GDK_SCROLL_LEFT:
2415                                 ev_view_previous_page (view);
2416                                 break;
2417                 }
2418
2419                 return TRUE;
2420         }
2421
2422         return FALSE;
2423 }
2424
2425 static EvViewSelection *
2426 find_selection_for_page (EvView *view,
2427                          gint    page)
2428 {
2429         GList *list;
2430
2431         for (list = view->selection_info.selections; list != NULL; list = list->next) {
2432                 EvViewSelection *selection;
2433
2434                 selection = (EvViewSelection *) list->data;
2435
2436                 if (selection->page == page)
2437                         return selection;
2438         }
2439
2440         return NULL;
2441 }
2442
2443 static void
2444 draw_end_presentation_page (EvView       *view,
2445                             GdkRectangle *page_area)
2446 {
2447         PangoLayout *layout;
2448         PangoFontDescription *font_desc;
2449         gchar *markup;
2450         const gchar *text = _("End of presentation. Press Escape to exit.");
2451
2452         if (view->presentation_state != EV_PRESENTATION_END)
2453                 return;
2454
2455         layout = gtk_widget_create_pango_layout (GTK_WIDGET (view), NULL);
2456         markup = g_strdup_printf ("<span foreground=\"white\">%s</span>", text);
2457         pango_layout_set_markup (layout, markup, -1);
2458         g_free (markup);
2459
2460         font_desc = pango_font_description_new ();
2461         pango_font_description_set_size (font_desc, 16 * PANGO_SCALE);
2462         pango_layout_set_font_description (layout, font_desc);
2463
2464         gtk_paint_layout (GTK_WIDGET (view)->style,
2465                           view->layout.bin_window,
2466                           GTK_WIDGET_STATE (view),
2467                           FALSE,
2468                           page_area,
2469                           GTK_WIDGET (view),
2470                           NULL,
2471                           page_area->x + 15,
2472                           page_area->y + 15,
2473                           layout);
2474
2475         pango_font_description_free (font_desc);
2476         g_object_unref (layout);
2477 }
2478
2479 static gboolean
2480 ev_view_expose_event (GtkWidget      *widget,
2481                       GdkEventExpose *event)
2482 {
2483         EvView  *view = EV_VIEW (widget);
2484         cairo_t *cr;
2485         gint     i;
2486
2487         if (view->animation && ev_transition_animation_ready (view->animation)) {
2488                 GdkRectangle page_area;
2489                 GtkBorder    border;
2490
2491                 if (get_page_extents (view, view->current_page, &page_area, &border)) {
2492                         cr = gdk_cairo_create (view->layout.bin_window);
2493
2494                         /* normalize to x=0, y=0 */
2495                         cairo_translate (cr, page_area.x, page_area.y);
2496                         page_area.x = page_area.y = 0;
2497
2498                         ev_transition_animation_paint (view->animation, cr, page_area);
2499                         cairo_destroy (cr);
2500                 }
2501
2502                 return TRUE;
2503         }
2504
2505         if (view->presentation) {
2506                 switch (view->presentation_state) {
2507                         case EV_PRESENTATION_END: {
2508                                 GdkRectangle area = {0};
2509
2510                                 area.width = widget->allocation.width;
2511                                 area.height = widget->allocation.height;
2512
2513                                 draw_end_presentation_page (view, &area);
2514                         }
2515                                 return FALSE;
2516                         case EV_PRESENTATION_BLACK:
2517                         case EV_PRESENTATION_WHITE:
2518                                 return FALSE;
2519                         case EV_PRESENTATION_NORMAL:
2520                         default:
2521                                 break;
2522                 }
2523         } else if (view->loading) {
2524                 GdkRectangle area = {0};
2525
2526                 area.width = widget->allocation.width;
2527                 area.height = widget->allocation.height;
2528
2529                 draw_loading_text (view,
2530                                    &area,
2531                                    &(event->area));
2532         }
2533
2534         if (view->document == NULL)
2535                 return FALSE;
2536
2537         cr = gdk_cairo_create (view->layout.bin_window);
2538
2539         for (i = view->start_page; i <= view->end_page; i++) {
2540                 GdkRectangle page_area;
2541                 GtkBorder border;
2542                 gboolean page_ready = TRUE;
2543
2544                 if (!get_page_extents (view, i, &page_area, &border))
2545                         continue;
2546
2547                 page_area.x -= view->scroll_x;
2548                 page_area.y -= view->scroll_y;
2549
2550                 draw_one_page (view, i, cr, &page_area, &border, &(event->area), &page_ready);
2551
2552                 if (page_ready && EV_IS_DOCUMENT_FIND (view->document) && view->highlight_find_results)
2553                         highlight_find_results (view, i);
2554         }
2555
2556         cairo_destroy (cr);
2557
2558         if (GTK_WIDGET_CLASS (ev_view_parent_class)->expose_event)
2559                 (* GTK_WIDGET_CLASS (ev_view_parent_class)->expose_event) (widget, event);
2560
2561         return FALSE;
2562 }
2563
2564 static gboolean
2565 ev_view_do_popup_menu (EvView *view,
2566                        gdouble x,
2567                        gdouble y)
2568 {
2569         EvLink  *link;
2570         EvImage *image;
2571
2572         image = ev_view_get_image_at_location (view, x, y);
2573         if (image) {
2574                 g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, image);
2575                 return TRUE;
2576         }
2577
2578         link = ev_view_get_link_at_location (view, x, y);
2579         if (link) {
2580                 g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, link);
2581                 return TRUE;
2582         }
2583
2584         g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, NULL);
2585
2586         return TRUE;
2587 }
2588
2589 static gboolean
2590 ev_view_popup_menu (GtkWidget *widget)
2591 {
2592         gint x, y;
2593
2594         gtk_widget_get_pointer (widget, &x, &y);
2595         return ev_view_do_popup_menu (EV_VIEW (widget), x, y);
2596 }
2597
2598 #if GTK_CHECK_VERSION (2, 11, 7)
2599 static void
2600 get_link_area (EvView       *view,
2601                gint          x,
2602                gint          y,
2603                EvLink       *link,
2604                GdkRectangle *area)
2605 {
2606         EvRectangle  ev_rect;
2607         GList       *link_mapping;
2608         gint         page;
2609         gint         x_offset = 0, y_offset = 0;
2610
2611         x += view->scroll_x;
2612         y += view->scroll_y;
2613
2614         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
2615
2616         link_mapping = ev_pixbuf_cache_get_link_mapping (view->pixbuf_cache, page);
2617         ev_link_mapping_get_area (link_mapping, link, &ev_rect);
2618
2619         doc_rect_to_view_rect (view, page, &ev_rect, area);
2620         area->y -= view->scroll_y ;
2621 }
2622
2623 static gboolean
2624 ev_view_query_tooltip (GtkWidget         *widget,
2625                        gint               x,
2626                        gint               y,
2627                        gboolean           keyboard_tip,
2628                        GtkTooltip        *tooltip)
2629 {
2630         EvView *view = EV_VIEW (widget);
2631         EvLink *link;
2632         gchar  *text;
2633
2634         link = ev_view_get_link_at_location (view, x, y);
2635         if (!link)
2636                 return FALSE;
2637
2638         text = tip_from_link (view, link);
2639         if (text && g_utf8_validate (text, -1, NULL)) {
2640                 GdkRectangle link_area;
2641
2642                 get_link_area (view, x, y, link, &link_area);
2643                 gtk_tooltip_set_text (tooltip, text);
2644                 gtk_tooltip_set_tip_area (tooltip, &link_area);
2645         }
2646         g_free (text);
2647
2648         return TRUE;
2649 }
2650 #endif /* GTK_CHECK_VERSION (2, 11, 7) */
2651
2652 static void
2653 start_selection_for_event (EvView         *view,
2654                            GdkEventButton *event)
2655 {
2656         EvSelectionStyle style;
2657
2658         clear_selection (view);
2659
2660         view->selection_info.start.x = event->x + view->scroll_x;
2661         view->selection_info.start.y = event->y + view->scroll_y;
2662
2663         switch (event->type) {
2664                 case GDK_2BUTTON_PRESS:
2665                         style = EV_SELECTION_STYLE_WORD;
2666                         break;
2667                 case GDK_3BUTTON_PRESS:
2668                         style = EV_SELECTION_STYLE_LINE;
2669                         break;
2670                 default:
2671                         style = EV_SELECTION_STYLE_GLYPH;
2672                         break;
2673         }
2674
2675         view->selection_info.style = style;
2676 }
2677
2678 static gboolean
2679 ev_view_button_press_event (GtkWidget      *widget,
2680                             GdkEventButton *event)
2681 {
2682         EvView *view = EV_VIEW (widget);
2683
2684         if (!view->document)
2685                 return FALSE;
2686
2687         if (!GTK_WIDGET_HAS_FOCUS (widget)) {
2688                 gtk_widget_grab_focus (widget);
2689         }
2690
2691         view->pressed_button = event->button;
2692         view->selection_info.in_drag = FALSE;
2693
2694         if (view->scroll_info.autoscrolling)
2695                 return TRUE;
2696
2697         switch (event->button) {
2698                 case 1: {
2699                         EvImage *image;
2700                         EvFormField *field;
2701
2702                         if (EV_IS_SELECTION (view->document) && view->selection_info.selections) {
2703                                 if (event->type == GDK_3BUTTON_PRESS) {
2704                                         start_selection_for_event (view, event);
2705                                 } else if (location_in_selected_text (view,
2706                                                                event->x + view->scroll_x,
2707                                                                event->y + view->scroll_y)) {
2708                                         view->selection_info.in_drag = TRUE;
2709                                 } else {
2710                                         start_selection_for_event (view, event);
2711                                 }
2712
2713                                 gtk_widget_queue_draw (widget);
2714                         } else if ((field = ev_view_get_form_field_at_location (view, event->x, event->y))) {
2715                                 ev_view_remove_all (view);
2716                                 ev_view_handle_form_field (view, field, event->x, event->y);
2717                         } else if (!location_in_text (view, event->x + view->scroll_x, event->y + view->scroll_y) &&
2718                                    (image = ev_view_get_image_at_location (view, event->x, event->y))) {
2719                                 if (view->image_dnd_info.image)
2720                                         g_object_unref (view->image_dnd_info.image);
2721                                 view->image_dnd_info.image = g_object_ref (image);
2722                                 view->image_dnd_info.in_drag = TRUE;
2723
2724                                 view->image_dnd_info.start.x = event->x + view->scroll_x;
2725                                 view->image_dnd_info.start.y = event->y + view->scroll_y;
2726                         } else {
2727                                 ev_view_remove_all (view);
2728
2729                                 if (EV_IS_SELECTION (view->document))
2730                                         start_selection_for_event (view, event);
2731                         }
2732                 }
2733                         return TRUE;
2734                 case 2:
2735                         /* use root coordinates as reference point because
2736                          * scrolling changes window relative coordinates */
2737                         view->drag_info.start.x = event->x_root;
2738                         view->drag_info.start.y = event->y_root;
2739                         view->drag_info.hadj = gtk_adjustment_get_value (view->hadjustment);
2740                         view->drag_info.vadj = gtk_adjustment_get_value (view->vadjustment);
2741
2742                         ev_view_set_cursor (view, EV_VIEW_CURSOR_DRAG);
2743
2744                         return TRUE;
2745                 case 3:
2746                         view->scroll_info.start_y = event->y;
2747                         return ev_view_do_popup_menu (view, event->x, event->y);
2748         }
2749
2750         return FALSE;
2751 }
2752
2753 static void
2754 ev_view_remove_all (EvView *view)
2755 {
2756         GList *children, *child;
2757
2758         children = gtk_container_get_children (GTK_CONTAINER (view));
2759         for (child = children; child && child->data; child = g_list_next (child)) {
2760                 gtk_container_remove (GTK_CONTAINER (view),
2761                                       GTK_WIDGET (child->data));
2762         }
2763         g_list_free (children);
2764 }
2765
2766 /*** Drag and Drop ***/
2767 static void
2768 ev_view_drag_data_get (GtkWidget        *widget,
2769                        GdkDragContext   *context,
2770                        GtkSelectionData *selection_data,
2771                        guint             info,
2772                        guint             time)
2773 {
2774         EvView *view = EV_VIEW (widget);
2775
2776         switch (info) {
2777                 case TARGET_DND_TEXT:
2778                         if (EV_IS_SELECTION (view->document) &&
2779                             view->selection_info.selections) {
2780                                 gchar *text;
2781
2782                                 text = get_selected_text (view);
2783                                 gtk_selection_data_set_text (selection_data,
2784                                                              text,
2785                                                              strlen (text));
2786                                 g_free (text);
2787                         }
2788                         break;
2789                 case TARGET_DND_IMAGE:
2790                         if (view->image_dnd_info.image) {
2791                                 GdkPixbuf *pixbuf;
2792
2793                                 ev_document_doc_mutex_lock ();
2794                                 pixbuf = ev_document_images_get_image (EV_DOCUMENT_IMAGES (view->document),
2795                                                                        view->image_dnd_info.image);
2796                                 ev_document_doc_mutex_unlock ();
2797
2798                                 gtk_selection_data_set_pixbuf (selection_data, pixbuf);
2799                                 g_object_unref (pixbuf);
2800                         }
2801                         break;
2802                 case TARGET_DND_URI:
2803                         if (view->image_dnd_info.image) {
2804                                 GdkPixbuf   *pixbuf;
2805                                 const gchar *tmp_uri;
2806                                 gchar      **uris;
2807
2808                                 ev_document_doc_mutex_lock ();
2809                                 pixbuf = ev_document_images_get_image (EV_DOCUMENT_IMAGES (view->document),
2810                                                                        view->image_dnd_info.image);
2811                                 ev_document_doc_mutex_unlock ();
2812
2813                                 tmp_uri = ev_image_save_tmp (view->image_dnd_info.image, pixbuf);
2814                                 g_object_unref (pixbuf);
2815
2816                                 uris = g_new0 (gchar *, 2);
2817                                 uris[0] = (gchar *)tmp_uri;
2818
2819                                 gtk_selection_data_set_uris (selection_data, uris);
2820
2821                                 /* g_free instead of g_strfreev since tmp_uri is const */
2822                                 g_free (uris);
2823                         }
2824         }
2825 }
2826
2827 static gboolean
2828 ev_view_drag_motion (GtkWidget      *widget,
2829                      GdkDragContext *context,
2830                      gint            x,
2831                      gint            y,
2832                      guint           time)
2833 {
2834         if (gtk_drag_get_source_widget (context) == widget)
2835                 gdk_drag_status (context, 0, time);
2836         else
2837                 gdk_drag_status (context, context->suggested_action, time);
2838
2839         return TRUE;
2840 }
2841
2842 static void
2843 ev_view_drag_data_received (GtkWidget          *widget,
2844                             GdkDragContext     *context,
2845                             gint                x,
2846                             gint                y,
2847                             GtkSelectionData   *selection_data,
2848                             guint               info,
2849                             guint               time)
2850 {
2851         gchar  **uris;
2852         gint     i = 0;
2853         GSList  *uri_list = NULL;
2854
2855         uris = gtk_selection_data_get_uris (selection_data);
2856         if (!uris) {
2857                 gtk_drag_finish (context, FALSE, FALSE, time);
2858                 return;
2859         }
2860
2861         for (i = 0; uris[i]; i++) {
2862                 uri_list = g_slist_prepend (uri_list, (gpointer) uris[i]);
2863         }
2864
2865         ev_application_open_uri_list (EV_APP, uri_list,
2866                                       gtk_widget_get_screen (widget),
2867                                       0);
2868         gtk_drag_finish (context, TRUE, FALSE, time);
2869
2870         g_strfreev (uris);
2871         g_slist_free (uri_list);
2872 }
2873
2874
2875 static gboolean
2876 selection_update_idle_cb (EvView *view)
2877 {
2878         compute_selections (view,
2879                             view->selection_info.style,
2880                             &view->selection_info.start,
2881                             &view->motion);
2882         view->selection_update_id = 0;
2883         return FALSE;
2884 }
2885
2886 static gboolean
2887 selection_scroll_timeout_cb (EvView *view)
2888 {
2889         gint x, y, shift = 0;
2890         GtkWidget *widget = GTK_WIDGET (view);
2891
2892         gtk_widget_get_pointer (widget, &x, &y);
2893
2894         if (y > widget->allocation.height) {
2895                 shift = (y - widget->allocation.height) / 2;
2896         } else if (y < 0) {
2897                 shift = y / 2;
2898         }
2899
2900         if (shift)
2901                 gtk_adjustment_set_value (view->vadjustment,
2902                                           CLAMP (view->vadjustment->value + shift,
2903                                           view->vadjustment->lower,
2904                                           view->vadjustment->upper -
2905                                           view->vadjustment->page_size));
2906
2907         if (x > widget->allocation.width) {
2908                 shift = (x - widget->allocation.width) / 2;
2909         } else if (x < 0) {
2910                 shift = x / 2;
2911         }
2912
2913         if (shift)
2914                 gtk_adjustment_set_value (view->hadjustment,
2915                                           CLAMP (view->hadjustment->value + shift,
2916                                           view->hadjustment->lower,
2917                                           view->hadjustment->upper -
2918                                           view->hadjustment->page_size));
2919
2920         return TRUE;
2921 }
2922
2923 static gboolean
2924 ev_view_drag_update_momentum (EvView *view)
2925 {
2926         int i;
2927         if (!view->drag_info.in_drag)
2928                 return FALSE;
2929
2930         for (i = DRAG_HISTORY - 1; i > 0; i--) {
2931                 view->drag_info.buffer[i].x = view->drag_info.buffer[i-1].x;
2932                 view->drag_info.buffer[i].y = view->drag_info.buffer[i-1].y;
2933         }
2934
2935         /* Momentum is a moving average of 10ms granularity over
2936          * the last 100ms with each 10ms stored in buffer.
2937          */
2938
2939         view->drag_info.momentum.x = (view->drag_info.buffer[DRAG_HISTORY - 1].x - view->drag_info.buffer[0].x);
2940         view->drag_info.momentum.y = (view->drag_info.buffer[DRAG_HISTORY - 1].y - view->drag_info.buffer[0].y);
2941
2942         return TRUE;
2943 }
2944
2945 static gboolean
2946 ev_view_scroll_drag_release (EvView *view)
2947 {
2948         gdouble dhadj_value, dvadj_value;
2949         gdouble oldhadjustment, oldvadjustment;
2950
2951         view->drag_info.momentum.x /= 1.2;
2952         view->drag_info.momentum.y /= 1.2; /* Alter these constants to change "friction" */
2953
2954         dhadj_value = view->hadjustment->page_size *
2955                       (gdouble)view->drag_info.momentum.x / GTK_WIDGET (view)->allocation.width;
2956         dvadj_value = view->vadjustment->page_size *
2957                       (gdouble)view->drag_info.momentum.y / GTK_WIDGET (view)->allocation.height;
2958
2959         oldhadjustment = gtk_adjustment_get_value (view->hadjustment);
2960         oldvadjustment = gtk_adjustment_get_value (view->vadjustment);
2961
2962         if (((oldhadjustment + dhadj_value) > (view->hadjustment->upper - view->hadjustment->page_size)) ||
2963            ((oldhadjustment + dhadj_value) < 0))
2964                 view->drag_info.momentum.x *= -0.5; /* 0.5 rather than 1 means the edges absorb some momentum */
2965         if (((oldvadjustment + dvadj_value) > (view->vadjustment->upper - view->vadjustment->page_size)) ||
2966            ((oldvadjustment + dvadj_value) < 0))
2967                 view->drag_info.momentum.y *= -0.5;
2968
2969         gtk_adjustment_set_value (view->hadjustment,
2970                                 MIN (oldhadjustment + dhadj_value,
2971                                 view->hadjustment->upper - view->hadjustment->page_size));
2972         gtk_adjustment_set_value (view->vadjustment,
2973                                 MIN (oldvadjustment + dvadj_value,
2974                                 view->vadjustment->upper - view->vadjustment->page_size));
2975
2976         if (((view->drag_info.momentum.x < 1) && (view->drag_info.momentum.x > -1)) &&
2977            ((view->drag_info.momentum.y < 1) && (view->drag_info.momentum.y > -1)))
2978                 return FALSE;
2979         else
2980                 return TRUE;
2981 }
2982
2983 static gboolean
2984 ev_view_motion_notify_event (GtkWidget      *widget,
2985                              GdkEventMotion *event)
2986 {
2987         EvView *view = EV_VIEW (widget);
2988         gint x, y;
2989
2990         if (!view->document)
2991                 return FALSE;
2992
2993
2994         if (event->is_hint || event->window != view->layout.bin_window) {
2995             gtk_widget_get_pointer (widget, &x, &y);
2996         } else {
2997             x = event->x;
2998             y = event->y;
2999         }
3000
3001         if (view->scroll_info.autoscrolling) {
3002                 view->scroll_info.last_y = y;
3003                 return TRUE;
3004         }
3005
3006         if (view->selection_info.in_drag) {
3007                 if (gtk_drag_check_threshold (widget,
3008                                               view->selection_info.start.x,
3009                                               view->selection_info.start.y,
3010                                               x, y)) {
3011                         GtkTargetList *target_list = gtk_target_list_new (NULL, 0);
3012
3013                         gtk_target_list_add_text_targets (target_list, TARGET_DND_TEXT);
3014
3015                         gtk_drag_begin (widget, target_list,
3016                                         GDK_ACTION_COPY,
3017                                         1, (GdkEvent *)event);
3018
3019                         view->selection_info.in_drag = FALSE;
3020
3021                         gtk_target_list_unref (target_list);
3022
3023                         return TRUE;
3024                 }
3025         } else if (view->image_dnd_info.in_drag) {
3026                 if (gtk_drag_check_threshold (widget,
3027                                               view->selection_info.start.x,
3028                                               view->selection_info.start.y,
3029                                               x, y)) {
3030                         GtkTargetList *target_list = gtk_target_list_new (NULL, 0);
3031
3032                         gtk_target_list_add_uri_targets (target_list, TARGET_DND_URI);
3033                         gtk_target_list_add_image_targets (target_list, TARGET_DND_IMAGE, TRUE);
3034
3035                         gtk_drag_begin (widget, target_list,
3036                                         GDK_ACTION_COPY,
3037                                         1, (GdkEvent *)event);
3038
3039                         view->image_dnd_info.in_drag = FALSE;
3040
3041                         gtk_target_list_unref (target_list);
3042
3043                         return TRUE;
3044                 }
3045         }
3046
3047         /* For the Evince 0.4.x release, we limit selection to un-rotated
3048          * documents only.
3049          */
3050         if (view->pressed_button == 1 && view->rotation == 0) {
3051
3052                 /* Schedule timeout to scroll during selection and additionally
3053                  * scroll once to allow arbitrary speed. */
3054                 if (!view->selection_scroll_id)
3055                     view->selection_scroll_id = g_timeout_add (SCROLL_TIME, (GSourceFunc)selection_scroll_timeout_cb, view);
3056                 else
3057                     selection_scroll_timeout_cb (view);
3058
3059                 view->selection_info.in_selection = TRUE;
3060                 view->motion.x = x + view->scroll_x;
3061                 view->motion.y = y + view->scroll_y;
3062
3063                 /* Queue an idle to handle the motion.  We do this because
3064                  * handling any selection events in the motion could be slower
3065                  * than new motion events reach us.  We always put it in the
3066                  * idle to make sure we catch up and don't visibly lag the
3067                  * mouse. */
3068                 if (!view->selection_update_id)
3069                         view->selection_update_id = g_idle_add ((GSourceFunc)selection_update_idle_cb, view);
3070
3071                 return TRUE;
3072         } else if (view->pressed_button == 2) {
3073                 if (!view->drag_info.in_drag) {
3074                         gboolean start;
3075                         int i;
3076
3077                         start = gtk_drag_check_threshold (widget,
3078                                                           view->drag_info.start.x,
3079                                                           view->drag_info.start.y,
3080                                                           event->x_root,
3081                                                           event->y_root);
3082                         view->drag_info.in_drag = start;
3083                         view->drag_info.drag_timeout_id = g_timeout_add (10,
3084                                 (GSourceFunc)ev_view_drag_update_momentum, view);
3085                         /* Set 100 to choose how long it takes to build up momentum */
3086                         /* Clear out previous momentum info: */
3087                         for (i = 0; i < DRAG_HISTORY; i++) {
3088                                 view->drag_info.buffer[i].x = event->x;
3089                                 view->drag_info.buffer[i].y = event->y;
3090                         }
3091                         view->drag_info.momentum.x = 0;
3092                         view->drag_info.momentum.y = 0;
3093                 }
3094
3095                 if (view->drag_info.in_drag) {
3096                         int dx, dy;
3097                         gdouble dhadj_value, dvadj_value;
3098
3099                         view->drag_info.buffer[0].x = event->x;
3100                         view->drag_info.buffer[0].y = event->y;
3101
3102                         dx = event->x_root - view->drag_info.start.x;
3103                         dy = event->y_root - view->drag_info.start.y;
3104
3105                         dhadj_value = view->hadjustment->page_size *
3106                                       (gdouble)dx / widget->allocation.width;
3107                         dvadj_value = view->vadjustment->page_size *
3108                                       (gdouble)dy / widget->allocation.height;
3109
3110                         /* clamp scrolling to visible area */
3111                         gtk_adjustment_set_value (view->hadjustment,
3112                                                   MIN(view->drag_info.hadj - dhadj_value,
3113                                                       view->hadjustment->upper -
3114                                                       view->hadjustment->page_size));
3115                         gtk_adjustment_set_value (view->vadjustment,
3116                                                   MIN(view->drag_info.vadj - dvadj_value,
3117                                                       view->vadjustment->upper -
3118                                                       view->vadjustment->page_size));
3119
3120                         return TRUE;
3121                 }
3122         } else if (view->pressed_button <= 0) {
3123                 ev_view_handle_cursor_over_xy (view, x, y);
3124                 return TRUE;
3125         }
3126
3127         return FALSE;
3128 }
3129
3130 static gboolean
3131 ev_view_button_release_event (GtkWidget      *widget,
3132                               GdkEventButton *event)
3133 {
3134         EvView *view = EV_VIEW (widget);
3135         EvLink *link = NULL;
3136
3137         view->image_dnd_info.in_drag = FALSE;
3138
3139         if (view->scroll_info.autoscrolling) {
3140                 ev_view_autoscroll_stop (view);
3141                 view->pressed_button = -1;
3142
3143                 return TRUE;
3144         }
3145
3146         if (view->drag_info.in_drag) {
3147                 view->drag_info.release_timeout_id =
3148                         g_timeout_add (20,
3149                                        (GSourceFunc)ev_view_scroll_drag_release, view);
3150         }
3151
3152         if (view->document && !view->drag_info.in_drag && view->pressed_button != 3) {
3153                 link = ev_view_get_link_at_location (view, event->x, event->y);
3154         }
3155
3156         view->drag_info.in_drag = FALSE;
3157
3158         if (view->pressed_button == 2) {
3159                 ev_view_handle_cursor_over_xy (view, event->x, event->y);
3160         }
3161
3162         view->pressed_button = -1;
3163
3164         if (view->selection_scroll_id) {
3165             g_source_remove (view->selection_scroll_id);
3166             view->selection_scroll_id = 0;
3167         }
3168         if (view->selection_update_id) {
3169             g_source_remove (view->selection_update_id);
3170             view->selection_update_id = 0;
3171         }
3172
3173         if (!view->selection_info.in_selection &&
3174             view->selection_info.style != EV_SELECTION_STYLE_GLYPH) {
3175                 compute_selections (view,
3176                                     view->selection_info.style,
3177                                     &(view->selection_info.start),
3178                                     &(view->selection_info.start));
3179         }
3180
3181         if (view->selection_info.selections) {
3182                 clear_link_selected (view);
3183                 ev_view_update_primary_selection (view);
3184
3185                 if (view->selection_info.in_drag) {
3186                         clear_selection (view);
3187                         gtk_widget_queue_draw (widget);
3188                 }
3189
3190                 view->selection_info.in_drag = FALSE;
3191         } else if (link) {
3192                 if (event->button == 2) {
3193                         EvLinkAction    *action;
3194                         EvLinkActionType type;
3195
3196                         action = ev_link_get_action (link);
3197                         if (!action)
3198                                 return FALSE;
3199
3200                         type = ev_link_action_get_action_type (action);
3201                         if (type == EV_LINK_ACTION_TYPE_GOTO_DEST) {
3202                                 g_signal_emit (view,
3203                                                signals[SIGNAL_EXTERNAL_LINK],
3204                                                0, action);
3205                         }
3206                 } else {
3207                         ev_view_handle_link (view, link);
3208                 }
3209         } else if (view->presentation) {
3210                 switch (event->button) {
3211                         case 1:
3212                                 ev_view_next_page (view);
3213                                 return TRUE;
3214                         case 3:
3215                                 ev_view_previous_page (view);
3216                                 return TRUE;
3217                 }
3218         }
3219
3220         return FALSE;
3221 }
3222
3223 /* Goto Window */
3224 /* Cut and paste from gtkwindow.c */
3225 static void
3226 send_focus_change (GtkWidget *widget,
3227                    gboolean   in)
3228 {
3229         GdkEvent *fevent = gdk_event_new (GDK_FOCUS_CHANGE);
3230
3231         g_object_ref (widget);
3232
3233         if (in)
3234                 GTK_WIDGET_SET_FLAGS (widget, GTK_HAS_FOCUS);
3235         else
3236                 GTK_WIDGET_UNSET_FLAGS (widget, GTK_HAS_FOCUS);
3237
3238         fevent->focus_change.type = GDK_FOCUS_CHANGE;
3239         fevent->focus_change.window = g_object_ref (widget->window);
3240         fevent->focus_change.in = in;
3241
3242         gtk_widget_event (widget, fevent);
3243
3244         g_object_notify (G_OBJECT (widget), "has-focus");
3245
3246         g_object_unref (widget);
3247         gdk_event_free (fevent);
3248 }
3249
3250 static void
3251 ev_view_goto_window_hide (EvView *view)
3252 {
3253         /* send focus-in event */
3254         send_focus_change (view->goto_entry, FALSE);
3255         gtk_widget_hide (view->goto_window);
3256         gtk_entry_set_text (GTK_ENTRY (view->goto_entry), "");
3257 }
3258
3259 static gboolean
3260 ev_view_goto_window_delete_event (GtkWidget   *widget,
3261                                   GdkEventAny *event,
3262                                   EvView      *view)
3263 {
3264         ev_view_goto_window_hide (view);
3265
3266         return TRUE;
3267 }
3268
3269 static gboolean
3270 key_is_numeric (guint keyval)
3271 {
3272         return ((keyval >= GDK_0 && keyval <= GDK_9) ||
3273                 (keyval >= GDK_KP_0 && keyval <= GDK_KP_9));
3274 }
3275
3276 static gboolean
3277 ev_view_goto_window_key_press_event (GtkWidget   *widget,
3278                                      GdkEventKey *event,
3279                                      EvView      *view)
3280 {
3281         switch (event->keyval) {
3282                 case GDK_Escape:
3283                 case GDK_Tab:
3284                 case GDK_KP_Tab:
3285                 case GDK_ISO_Left_Tab:
3286                         ev_view_goto_window_hide (view);
3287                         return TRUE;
3288                 case GDK_Return:
3289                 case GDK_KP_Enter:
3290                 case GDK_ISO_Enter:
3291                 case GDK_BackSpace:
3292                 case GDK_Delete:
3293                         return FALSE;
3294                 default:
3295                         if (!key_is_numeric (event->keyval))
3296                                 return TRUE;
3297         }
3298
3299         return FALSE;
3300 }
3301
3302 static gboolean
3303 ev_view_goto_window_button_press_event (GtkWidget      *widget,
3304                                         GdkEventButton *event,
3305                                         EvView         *view)
3306 {
3307         ev_view_goto_window_hide (view);
3308
3309         return TRUE;
3310 }
3311
3312 static void
3313 ev_view_goto_entry_activate (GtkEntry *entry,
3314                              EvView   *view)
3315 {
3316         const gchar *text;
3317         gint         page;
3318
3319         text = gtk_entry_get_text (entry);
3320         page = atoi (text) - 1;
3321
3322         ev_view_goto_window_hide (view);
3323
3324         if (page >= 0 &&
3325             page < ev_page_cache_get_n_pages (view->page_cache))
3326                 ev_page_cache_set_current_page (view->page_cache, page);
3327 }
3328
3329 static void
3330 ev_view_goto_window_create (EvView *view)
3331 {
3332         GtkWidget *frame, *hbox, *toplevel, *label;
3333
3334         toplevel = gtk_widget_get_toplevel (GTK_WIDGET (view));
3335
3336         if (view->goto_window) {
3337                 if (GTK_WINDOW (toplevel)->group)
3338                         gtk_window_group_add_window (GTK_WINDOW (toplevel)->group,
3339                                                      GTK_WINDOW (view->goto_window));
3340                 else if (GTK_WINDOW (view->goto_window)->group)
3341                         gtk_window_group_remove_window (GTK_WINDOW (view->goto_window)->group,
3342                                                         GTK_WINDOW (view->goto_window));
3343                 return;
3344         }
3345
3346         view->goto_window = gtk_window_new (GTK_WINDOW_POPUP);
3347
3348         if (GTK_WINDOW (toplevel)->group)
3349                 gtk_window_group_add_window (GTK_WINDOW (toplevel)->group,
3350                                              GTK_WINDOW (view->goto_window));
3351
3352         gtk_window_set_modal (GTK_WINDOW (view->goto_window), TRUE);
3353
3354         g_signal_connect (view->goto_window, "delete_event",
3355                           G_CALLBACK (ev_view_goto_window_delete_event),
3356                           view);
3357         g_signal_connect (view->goto_window, "key_press_event",
3358                           G_CALLBACK (ev_view_goto_window_key_press_event),
3359                           view);
3360         g_signal_connect (view->goto_window, "button_press_event",
3361                           G_CALLBACK (ev_view_goto_window_button_press_event),
3362                           view);
3363
3364         frame = gtk_frame_new (NULL);
3365         gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_ETCHED_IN);
3366         gtk_container_add (GTK_CONTAINER (view->goto_window), frame);
3367         gtk_widget_show (frame);
3368
3369         hbox = gtk_hbox_new (FALSE, 0);
3370         gtk_container_set_border_width (GTK_CONTAINER (hbox), 3);
3371         gtk_container_add (GTK_CONTAINER (frame), hbox);
3372         gtk_widget_show (hbox);
3373
3374         label = gtk_label_new(_("Jump to page:"));
3375         gtk_box_pack_start (GTK_BOX (hbox), label, TRUE, TRUE, 3);
3376         gtk_widget_show (label);
3377         gtk_widget_realize (label);
3378
3379         view->goto_entry = gtk_entry_new ();
3380         g_signal_connect (view->goto_entry, "activate",
3381                           G_CALLBACK (ev_view_goto_entry_activate),
3382                           view);
3383         gtk_box_pack_start_defaults (GTK_BOX (hbox), view->goto_entry);
3384         gtk_widget_show (view->goto_entry);
3385         gtk_widget_realize (view->goto_entry);
3386 }
3387
3388 static void
3389 ev_view_goto_entry_grab_focus (EvView *view)
3390 {
3391         GtkWidgetClass *entry_parent_class;
3392
3393         entry_parent_class = g_type_class_peek_parent (GTK_ENTRY_GET_CLASS (view->goto_entry));
3394         (entry_parent_class->grab_focus) (view->goto_entry);
3395
3396         send_focus_change (view->goto_entry, TRUE);
3397 }
3398
3399 static void
3400 ev_view_goto_window_send_key_event (EvView   *view,
3401                                     GdkEvent *event)
3402 {
3403         GdkEventKey *new_event;
3404         GdkScreen   *screen;
3405
3406         /* Move goto window off screen */
3407         screen = gtk_widget_get_screen (GTK_WIDGET (view));
3408         gtk_window_move (GTK_WINDOW (view->goto_window),
3409                          gdk_screen_get_width (screen) + 1,
3410                          gdk_screen_get_height (screen) + 1);
3411         gtk_widget_show (view->goto_window);
3412
3413         new_event = (GdkEventKey *) gdk_event_copy (event);
3414         g_object_unref (new_event->window);
3415         new_event->window = g_object_ref (view->goto_window->window);
3416         gtk_widget_realize (view->goto_window);
3417
3418         gtk_widget_event (view->goto_window, (GdkEvent *)new_event);
3419         gdk_event_free ((GdkEvent *)new_event);
3420         gtk_widget_hide (view->goto_window);
3421 }
3422
3423 static gboolean
3424 ev_view_key_press_event (GtkWidget   *widget,
3425                          GdkEventKey *event)
3426 {
3427         EvView *view = EV_VIEW (widget);
3428         EvPresentationState current;
3429
3430         if (!view->document)
3431                 return FALSE;
3432
3433         if (!view->presentation ||
3434             view->presentation_state == EV_PRESENTATION_END)
3435                 return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
3436
3437
3438         current = view->presentation_state;
3439
3440         switch (event->keyval) {
3441                 case GDK_b:
3442                 case GDK_B:
3443                 case GDK_period:
3444                 case GDK_KP_Decimal:
3445                         view->presentation_state =
3446                                 (view->presentation_state == EV_PRESENTATION_BLACK) ?
3447                                 EV_PRESENTATION_NORMAL : EV_PRESENTATION_BLACK;
3448                         break;
3449                 case GDK_w:
3450                 case GDK_W:
3451                         view->presentation_state =
3452                                 (view->presentation_state == EV_PRESENTATION_WHITE) ?
3453                                 EV_PRESENTATION_NORMAL : EV_PRESENTATION_WHITE;
3454                         break;
3455                 default:
3456                         if (view->presentation_state == EV_PRESENTATION_BLACK ||
3457                             view->presentation_state == EV_PRESENTATION_WHITE) {
3458                                 view->presentation_state = EV_PRESENTATION_NORMAL;
3459                         }
3460         }
3461
3462         if (current == view->presentation_state) {
3463                 if (ev_page_cache_get_n_pages (view->page_cache) > 1 &&
3464                     key_is_numeric (event->keyval)) {
3465                         gint x, y;
3466
3467                         ev_view_goto_window_create (view);
3468                         ev_view_goto_window_send_key_event (view, (GdkEvent *)event);
3469                         gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
3470                         gtk_window_move (GTK_WINDOW (view->goto_window), x, y);
3471                         gtk_widget_show (view->goto_window);
3472                         ev_view_goto_entry_grab_focus (view);
3473
3474                         return TRUE;
3475                 }
3476
3477                 return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
3478         }
3479
3480         switch (view->presentation_state) {
3481                 case EV_PRESENTATION_NORMAL:
3482                 case EV_PRESENTATION_BLACK:
3483                         gdk_window_set_background (view->layout.bin_window,
3484                                                    &widget->style->black);
3485                         break;
3486                 case EV_PRESENTATION_WHITE:
3487                         gdk_window_set_background (view->layout.bin_window,
3488                                                    &widget->style->white);
3489                         break;
3490                 default:
3491                         return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
3492         }
3493
3494         gtk_widget_queue_draw (widget);
3495         return TRUE;
3496 }
3497
3498 static gint
3499 ev_view_focus_in (GtkWidget     *widget,
3500                   GdkEventFocus *event)
3501 {
3502         if (EV_VIEW (widget)->pixbuf_cache)
3503                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
3504         gtk_widget_queue_draw (widget);
3505
3506         return FALSE;
3507 }
3508
3509 static gint
3510 ev_view_focus_out (GtkWidget     *widget,
3511                      GdkEventFocus *event)
3512 {
3513         if (EV_VIEW (widget)->goto_window)
3514                 ev_view_goto_window_hide (EV_VIEW (widget));
3515
3516         if (EV_VIEW (widget)->pixbuf_cache)
3517                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
3518         gtk_widget_queue_draw (widget);
3519
3520         return FALSE;
3521 }
3522
3523 static gboolean
3524 ev_view_leave_notify_event (GtkWidget *widget, GdkEventCrossing   *event)
3525 {
3526         EvView *view = EV_VIEW (widget);
3527
3528         if (view->cursor != EV_VIEW_CURSOR_NORMAL)
3529                 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
3530
3531 #if !GTK_CHECK_VERSION (2, 11, 7)
3532         if (view->link_tooltip) {
3533                 view->hovered_link = NULL;
3534                 ev_tooltip_deactivate (EV_TOOLTIP (view->link_tooltip));
3535         }
3536 #endif
3537
3538         return FALSE;
3539 }
3540
3541 static gboolean
3542 ev_view_enter_notify_event (GtkWidget *widget, GdkEventCrossing   *event)
3543 {
3544         EvView *view = EV_VIEW (widget);
3545
3546         ev_view_handle_cursor_over_xy (view, event->x, event->y);
3547
3548         return FALSE;
3549 }
3550
3551 static void
3552 ev_view_style_set (GtkWidget *widget,
3553                    GtkStyle  *old_style)
3554 {
3555         if (EV_VIEW (widget)->pixbuf_cache)
3556                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
3557
3558         GTK_WIDGET_CLASS (ev_view_parent_class)->style_set (widget, old_style);
3559 }
3560
3561 /*** Drawing ***/
3562
3563 static guint32
3564 ev_gdk_color_to_rgb (const GdkColor *color)
3565 {
3566   guint32 result;
3567   result = (0xff0000 | (color->red & 0xff00));
3568   result <<= 8;
3569   result |= ((color->green & 0xff00) | (color->blue >> 8));
3570   return result;
3571 }
3572
3573 static void
3574 draw_rubberband (GtkWidget *widget, GdkWindow *window,
3575                  const GdkRectangle *rect, guchar alpha)
3576 {
3577         GdkGC *gc;
3578         GdkPixbuf *pixbuf;
3579         GdkColor *fill_color_gdk;
3580         guint fill_color;
3581
3582         fill_color_gdk = gdk_color_copy (&GTK_WIDGET (widget)->style->base[GTK_STATE_SELECTED]);
3583         fill_color = ev_gdk_color_to_rgb (fill_color_gdk) << 8 | alpha;
3584
3585         pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE, 8,
3586                                  rect->width, rect->height);
3587         gdk_pixbuf_fill (pixbuf, fill_color);
3588
3589         gdk_draw_pixbuf (window, NULL, pixbuf,
3590                          0, 0,
3591                          rect->x - EV_VIEW (widget)->scroll_x, rect->y - EV_VIEW (widget)->scroll_y,
3592                          rect->width, rect->height,
3593                          GDK_RGB_DITHER_NONE,
3594                          0, 0);
3595
3596         g_object_unref (pixbuf);
3597
3598         gc = gdk_gc_new (window);
3599         gdk_gc_set_rgb_fg_color (gc, fill_color_gdk);
3600         gdk_draw_rectangle (window, gc, FALSE,
3601                             rect->x - EV_VIEW (widget)->scroll_x, rect->y - EV_VIEW (widget)->scroll_y,
3602                             rect->width - 1,
3603                             rect->height - 1);
3604         g_object_unref (gc);
3605
3606         gdk_color_free (fill_color_gdk);
3607 }
3608
3609
3610 static void
3611 highlight_find_results (EvView *view, int page)
3612 {
3613         EvDocumentFind *find;
3614         int i, results = 0;
3615
3616         find = EV_DOCUMENT_FIND (view->document);
3617
3618         results = ev_document_find_get_n_results (find, page);
3619
3620         for (i = 0; i < results; i++) {
3621                 EvRectangle rectangle;
3622                 GdkRectangle view_rectangle;
3623                 guchar alpha;
3624
3625                 if (i == view->find_result && page == view->current_page) {
3626                         alpha = 0x90;
3627                 } else {
3628                         alpha = 0x20;
3629                 }
3630
3631                 ev_document_find_get_result (find, page, i, &rectangle);
3632                 doc_rect_to_view_rect (view, page, &rectangle, &view_rectangle);
3633                 draw_rubberband (GTK_WIDGET (view), view->layout.bin_window,
3634                                  &view_rectangle, alpha);
3635         }
3636 }
3637
3638 static void
3639 draw_loading_text (EvView       *view,
3640                    GdkRectangle *page_area,
3641                    GdkRectangle *expose_area)
3642 {
3643         cairo_t *cr;
3644         gint     width, height;
3645
3646         if (!view->loading_text) {
3647                 const gchar *loading_text = _("Loading...");
3648                 PangoLayout *layout;
3649                 PangoFontDescription *font_desc;
3650                 PangoRectangle logical_rect;
3651                 gint target_width;
3652                 gdouble real_scale;
3653
3654                 ev_document_fc_mutex_lock ();
3655
3656                 layout = gtk_widget_create_pango_layout (GTK_WIDGET (view), loading_text);
3657
3658                 font_desc = pango_font_description_new ();
3659
3660                 /* We set the font to be 10 points, get the size, and scale appropriately */
3661                 pango_font_description_set_size (font_desc, 10 * PANGO_SCALE);
3662                 pango_layout_set_font_description (layout, font_desc);
3663                 pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
3664
3665                 target_width = MAX (page_area->width / 2, 1);
3666                 real_scale = ((double)target_width / (double) logical_rect.width) * (PANGO_SCALE * 10);
3667                 pango_font_description_set_size (font_desc, (int)real_scale);
3668                 pango_layout_set_font_description (layout, font_desc);
3669                 pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
3670
3671                 view->loading_text = cairo_image_surface_create (CAIRO_FORMAT_ARGB32,
3672                                                                  logical_rect.width,
3673                                                                  logical_rect.height);
3674                 cr = cairo_create (view->loading_text);
3675                 cairo_set_source_rgb (cr,
3676                                       155 / (double)255,
3677                                       155 / (double)255,
3678                                       155 / (double)255);
3679                 pango_cairo_show_layout (cr, layout);
3680                 cairo_destroy (cr);
3681
3682                 pango_font_description_free (font_desc);
3683                 g_object_unref (layout);
3684
3685                 ev_document_fc_mutex_unlock ();
3686         }
3687
3688         width = (page_area->width - cairo_image_surface_get_width (view->loading_text)) / 2;
3689         height = (page_area->height - cairo_image_surface_get_height (view->loading_text)) / 2;
3690
3691         cr = gdk_cairo_create (view->layout.bin_window);
3692         cairo_translate (cr,
3693                          page_area->x + width,
3694                          page_area->y + height);
3695         cairo_set_source_surface (cr, view->loading_text, 0, 0);
3696         cairo_paint (cr);
3697         cairo_destroy (cr);
3698 }
3699
3700 static void
3701 draw_one_page (EvView       *view,
3702                gint          page,
3703                cairo_t      *cr,
3704                GdkRectangle *page_area,
3705                GtkBorder    *border,
3706                GdkRectangle *expose_area,
3707                gboolean     *page_ready)
3708 {
3709         GdkRectangle overlap;
3710         GdkRectangle real_page_area;
3711
3712         g_assert (view->document);
3713
3714         if (! gdk_rectangle_intersect (page_area, expose_area, &overlap))
3715                 return;
3716
3717         /* Render the document itself */
3718         real_page_area = *page_area;
3719
3720         real_page_area.x += border->left;
3721         real_page_area.y += border->top;
3722         real_page_area.width -= (border->left + border->right);
3723         real_page_area.height -= (border->top + border->bottom);
3724         *page_ready = TRUE;
3725
3726         if (!view->presentation) {
3727                 gint current_page;
3728
3729                 current_page = ev_page_cache_get_current_page (view->page_cache);
3730                 ev_document_misc_paint_one_page (view->layout.bin_window,
3731                                                  GTK_WIDGET (view),
3732                                                  page_area, border,
3733                                                  page == current_page);
3734         }
3735
3736         if (gdk_rectangle_intersect (&real_page_area, expose_area, &overlap)) {
3737                 gint             width, height;
3738                 gint             page_width, page_height;
3739                 cairo_surface_t *page_surface = NULL;
3740                 gint             selection_width, selection_height;
3741                 cairo_surface_t *selection_surface = NULL;
3742
3743                 page_surface = ev_pixbuf_cache_get_surface (view->pixbuf_cache, page);
3744
3745                 if (!page_surface) {
3746                         if (!view->presentation) {
3747                                 draw_loading_text (view,
3748                                                    &real_page_area,
3749                                                    expose_area);
3750                         }
3751
3752                         *page_ready = FALSE;
3753
3754                         return;
3755                 }
3756
3757                 ev_page_cache_get_size (view->page_cache,
3758                                         page, view->rotation,
3759                                         view->scale,
3760                                         &width, &height);
3761
3762                 page_width = cairo_image_surface_get_width (page_surface);
3763                 page_height = cairo_image_surface_get_height (page_surface);
3764
3765                 cairo_save (cr);
3766                 cairo_translate (cr, overlap.x, overlap.y);
3767
3768                 if (width != page_width || height != page_height) {
3769                         cairo_pattern_set_filter (cairo_get_source (cr),
3770                                                   CAIRO_FILTER_FAST);
3771                         cairo_scale (cr,
3772                                      (gdouble)width / page_width,
3773                                      (gdouble)height / page_height);
3774                 }
3775
3776                 cairo_surface_set_device_offset (page_surface,
3777                                                  overlap.x - real_page_area.x,
3778                                                  overlap.y - real_page_area.y);
3779                 cairo_set_source_surface (cr, page_surface, 0, 0);
3780                 cairo_paint (cr);
3781                 cairo_restore (cr);
3782
3783                 /* Get the selection pixbuf iff we have something to draw */
3784                 if (find_selection_for_page (view, page) &&
3785                     view->selection_mode == EV_VIEW_SELECTION_TEXT) {
3786                         selection_surface =
3787                                 ev_pixbuf_cache_get_selection_surface (view->pixbuf_cache,
3788                                                                        page,
3789                                                                        view->scale,
3790                                                                        NULL);
3791                 }
3792
3793                 if (!selection_surface) {
3794                         return;
3795                 }
3796
3797                 selection_width = cairo_image_surface_get_width (selection_surface);
3798                 selection_height = cairo_image_surface_get_height (selection_surface);
3799
3800                 cairo_save (cr);
3801                 cairo_translate (cr, overlap.x, overlap.y);
3802
3803                 if (width != selection_width || height != selection_height) {
3804                         cairo_pattern_set_filter (cairo_get_source (cr),
3805                                                   CAIRO_FILTER_FAST);
3806                         cairo_scale (cr,
3807                                      (gdouble)width / selection_width,
3808                                      (gdouble)height / selection_height);
3809                 }
3810
3811                 cairo_surface_set_device_offset (selection_surface,
3812                                                  overlap.x - real_page_area.x,
3813                                                  overlap.y - real_page_area.y);
3814                 cairo_set_source_surface (cr, selection_surface, 0, 0);
3815                 cairo_paint (cr);
3816                 cairo_restore (cr);
3817         }
3818 }
3819
3820 /*** GObject functions ***/
3821
3822 static void
3823 ev_view_finalize (GObject *object)
3824 {
3825         EvView *view = EV_VIEW (object);
3826
3827         g_free (view->find_status);
3828
3829         clear_selection (view);
3830         clear_link_selected (view);
3831
3832         if (view->image_dnd_info.image)
3833                 g_object_unref (view->image_dnd_info.image);
3834         view->image_dnd_info.image = NULL;
3835
3836         G_OBJECT_CLASS (ev_view_parent_class)->finalize (object);
3837 }
3838
3839 static void
3840 ev_view_destroy (GtkObject *object)
3841 {
3842         EvView *view = EV_VIEW (object);
3843
3844         if (view->document) {
3845                 g_object_unref (view->document);
3846                 view->document = NULL;
3847         }
3848
3849         if (view->pixbuf_cache) {
3850                 g_object_unref (view->pixbuf_cache);
3851                 view->pixbuf_cache = NULL;
3852         }
3853
3854 #if !GTK_CHECK_VERSION (2, 11, 7)
3855         if (view->link_tooltip) {
3856                 gtk_widget_destroy (view->link_tooltip);
3857                 view->link_tooltip = NULL;
3858         }
3859 #endif
3860         if (view->goto_window) {
3861                 gtk_widget_destroy (view->goto_window);
3862                 view->goto_window = NULL;
3863                 view->goto_entry = NULL;
3864         }
3865
3866         if (view->selection_scroll_id) {
3867             g_source_remove (view->selection_scroll_id);
3868             view->selection_scroll_id = 0;
3869         }
3870
3871         if (view->selection_update_id) {
3872             g_source_remove (view->selection_update_id);
3873             view->selection_update_id = 0;
3874         }
3875
3876         if (view->loading_text) {
3877                 cairo_surface_destroy (view->loading_text);
3878                 view->loading_text = NULL;
3879         }
3880
3881         if (view->scroll_info.timeout_id) {
3882             g_source_remove (view->scroll_info.timeout_id);
3883             view->scroll_info.timeout_id = 0;
3884         }
3885
3886         if (view->drag_info.drag_timeout_id) {
3887                 g_source_remove (view->drag_info.drag_timeout_id);
3888                 view->drag_info.drag_timeout_id = 0;
3889         }
3890
3891         if (view->drag_info.release_timeout_id) {
3892                 g_source_remove (view->drag_info.release_timeout_id);
3893                 view->drag_info.release_timeout_id = 0;
3894         }
3895
3896         ev_view_presentation_transition_stop (view);
3897
3898         ev_view_set_scroll_adjustments (GTK_LAYOUT (view), NULL, NULL);
3899
3900         GTK_OBJECT_CLASS (ev_view_parent_class)->destroy (object);
3901 }
3902
3903 static void
3904 ev_view_set_property (GObject      *object,
3905                       guint         prop_id,
3906                       const GValue *value,
3907                       GParamSpec   *pspec)
3908 {
3909         EvView *view = EV_VIEW (object);
3910
3911         switch (prop_id) {
3912                 case PROP_CONTINUOUS:
3913                         ev_view_set_continuous (view, g_value_get_boolean (value));
3914                         break;
3915                 case PROP_DUAL_PAGE:
3916                         ev_view_set_dual_page (view, g_value_get_boolean (value));
3917                         break;
3918                 case PROP_FULLSCREEN:
3919                         ev_view_set_fullscreen (view, g_value_get_boolean (value));
3920                         break;
3921                 case PROP_PRESENTATION:
3922                         ev_view_set_presentation (view, g_value_get_boolean (value));
3923                         break;
3924                 case PROP_SIZING_MODE:
3925                         ev_view_set_sizing_mode (view, g_value_get_enum (value));
3926                         break;
3927                 case PROP_ZOOM:
3928                         ev_view_set_zoom (view, g_value_get_double (value), FALSE);
3929                         break;
3930                 case PROP_ROTATION:
3931                         ev_view_set_rotation (view, g_value_get_int (value));
3932                         break;
3933                 default:
3934                         G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
3935         }
3936 }
3937
3938 static AtkObject *
3939 ev_view_get_accessible (GtkWidget *widget)
3940 {
3941         static gboolean first_time = TRUE;
3942
3943         if (first_time) {
3944                 AtkObjectFactory *factory;
3945                 AtkRegistry *registry;
3946                 GType derived_type;
3947                 GType derived_atk_type;
3948
3949                 /*
3950                  * Figure out whether accessibility is enabled by looking at the
3951                  * type of the accessible object which would be created for
3952                  * the parent type of EvView.
3953                  */
3954                 derived_type = g_type_parent (EV_TYPE_VIEW);
3955
3956                 registry = atk_get_default_registry ();
3957                 factory = atk_registry_get_factory (registry,
3958                                                     derived_type);
3959                 derived_atk_type = atk_object_factory_get_accessible_type (factory);
3960                 if (g_type_is_a (derived_atk_type, GTK_TYPE_ACCESSIBLE))
3961                         atk_registry_set_factory_type (registry,
3962                                                        EV_TYPE_VIEW,
3963                                                        ev_view_accessible_factory_get_type ());
3964                 first_time = FALSE;
3965         }
3966         return GTK_WIDGET_CLASS (ev_view_parent_class)->get_accessible (widget);
3967 }
3968
3969 static void
3970 ev_view_get_property (GObject *object,
3971                       guint prop_id,
3972                       GValue *value,
3973                       GParamSpec *pspec)
3974 {
3975         EvView *view = EV_VIEW (object);
3976
3977         switch (prop_id) {
3978                 case PROP_FIND_STATUS:
3979                         g_value_set_string (value, view->find_status);
3980                         break;
3981                 case PROP_CONTINUOUS:
3982                         g_value_set_boolean (value, view->continuous);
3983                         break;
3984                 case PROP_DUAL_PAGE:
3985                         g_value_set_boolean (value, view->dual_page);
3986                         break;
3987                 case PROP_FULLSCREEN:
3988                         g_value_set_boolean (value, view->fullscreen);
3989                         break;
3990                 case PROP_PRESENTATION:
3991                         g_value_set_boolean (value, view->presentation);
3992                         break;
3993                 case PROP_SIZING_MODE:
3994                         g_value_set_enum (value, view->sizing_mode);
3995                         break;
3996                 case PROP_ZOOM:
3997                         g_value_set_double (value, view->scale);
3998                         break;
3999                 case PROP_ROTATION:
4000                         g_value_set_int (value, view->rotation);
4001                         break;
4002                 case PROP_HAS_SELECTION:
4003                         g_value_set_boolean (value,
4004                                              view->selection_info.selections != NULL);
4005                         break;
4006                 default:
4007                         G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
4008         }
4009 }
4010
4011 static void
4012 ev_view_class_init (EvViewClass *class)
4013 {
4014         GObjectClass *object_class = G_OBJECT_CLASS (class);
4015         GtkObjectClass *gtk_object_class = GTK_OBJECT_CLASS (class);
4016         GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
4017         GtkLayoutClass *layout_class = GTK_LAYOUT_CLASS (class);
4018         GtkBindingSet *binding_set;
4019
4020         object_class->finalize = ev_view_finalize;
4021         object_class->set_property = ev_view_set_property;
4022         object_class->get_property = ev_view_get_property;
4023
4024         widget_class->expose_event = ev_view_expose_event;
4025         widget_class->button_press_event = ev_view_button_press_event;
4026         widget_class->motion_notify_event = ev_view_motion_notify_event;
4027         widget_class->button_release_event = ev_view_button_release_event;
4028         widget_class->key_press_event = ev_view_key_press_event;
4029         widget_class->focus_in_event = ev_view_focus_in;
4030         widget_class->focus_out_event = ev_view_focus_out;
4031         widget_class->get_accessible = ev_view_get_accessible;
4032         widget_class->size_request = ev_view_size_request;
4033         widget_class->size_allocate = ev_view_size_allocate;
4034         widget_class->realize = ev_view_realize;
4035         widget_class->scroll_event = ev_view_scroll_event;
4036         widget_class->enter_notify_event = ev_view_enter_notify_event;
4037         widget_class->leave_notify_event = ev_view_leave_notify_event;
4038         widget_class->style_set = ev_view_style_set;
4039         widget_class->drag_data_get = ev_view_drag_data_get;
4040         widget_class->drag_motion = ev_view_drag_motion;
4041         widget_class->drag_data_received = ev_view_drag_data_received;
4042         widget_class->popup_menu = ev_view_popup_menu;
4043 #if GTK_CHECK_VERSION (2, 11, 7)
4044         widget_class->query_tooltip = ev_view_query_tooltip;
4045 #endif
4046
4047         gtk_object_class->destroy = ev_view_destroy;
4048
4049         layout_class->set_scroll_adjustments = ev_view_set_scroll_adjustments;
4050
4051         class->binding_activated = ev_view_scroll;
4052
4053         signals[SIGNAL_BINDING_ACTIVATED] = g_signal_new ("binding_activated",
4054                          G_TYPE_FROM_CLASS (object_class),
4055                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
4056                          G_STRUCT_OFFSET (EvViewClass, binding_activated),
4057                          NULL, NULL,
4058                          ev_marshal_VOID__ENUM_BOOLEAN,
4059                          G_TYPE_NONE, 2,
4060                          GTK_TYPE_SCROLL_TYPE,
4061                          G_TYPE_BOOLEAN);
4062
4063         signals[SIGNAL_ZOOM_INVALID] = g_signal_new ("zoom-invalid",
4064                          G_TYPE_FROM_CLASS (object_class),
4065                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
4066                          G_STRUCT_OFFSET (EvViewClass, zoom_invalid),
4067                          NULL, NULL,
4068                          ev_marshal_VOID__VOID,
4069                          G_TYPE_NONE, 0, G_TYPE_NONE);
4070         signals[SIGNAL_HANDLE_LINK] = g_signal_new ("handle-link",
4071                          G_TYPE_FROM_CLASS (object_class),
4072                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
4073                          G_STRUCT_OFFSET (EvViewClass, handle_link),
4074                          NULL, NULL,
4075                          g_cclosure_marshal_VOID__OBJECT,
4076                          G_TYPE_NONE, 1,
4077                          G_TYPE_OBJECT);
4078         signals[SIGNAL_EXTERNAL_LINK] = g_signal_new ("external-link",
4079                          G_TYPE_FROM_CLASS (object_class),
4080                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
4081                          G_STRUCT_OFFSET (EvViewClass, external_link),
4082                          NULL, NULL,
4083                          g_cclosure_marshal_VOID__OBJECT,
4084                          G_TYPE_NONE, 1,
4085                          G_TYPE_OBJECT);
4086         signals[SIGNAL_POPUP_MENU] = g_signal_new ("popup",
4087                          G_TYPE_FROM_CLASS (object_class),
4088                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
4089                          G_STRUCT_OFFSET (EvViewClass, popup_menu),
4090                          NULL, NULL,
4091                          g_cclosure_marshal_VOID__OBJECT,
4092                          G_TYPE_NONE, 1,
4093                          G_TYPE_OBJECT);
4094
4095
4096         g_object_class_install_property (object_class,
4097                                          PROP_FIND_STATUS,
4098                                          g_param_spec_string ("find-status",
4099                                                               "Find Status Message",
4100                                                               "The find status message",
4101                                                               NULL,
4102                                                               G_PARAM_READABLE));
4103
4104         g_object_class_install_property (object_class,
4105                                          PROP_CONTINUOUS,
4106                                          g_param_spec_boolean ("continuous",
4107                                                                "Continuous",
4108                                                                "Continuous scrolling mode",
4109                                                                TRUE,
4110                                                                G_PARAM_READWRITE));
4111
4112         g_object_class_install_property (object_class,
4113                                          PROP_DUAL_PAGE,
4114                                          g_param_spec_boolean ("dual-page",
4115                                                                "Dual Page",
4116                                                                "Two pages visible at once",
4117                                                                FALSE,
4118                                                                G_PARAM_READWRITE));
4119         g_object_class_install_property (object_class,
4120                                          PROP_FULLSCREEN,
4121                                          g_param_spec_boolean ("fullscreen",
4122                                                                "Full Screen",
4123                                                                "Draw page in a fullscreen fashion",
4124                                                                FALSE,
4125                                                                G_PARAM_READWRITE));
4126         g_object_class_install_property (object_class,
4127                                          PROP_PRESENTATION,
4128                                          g_param_spec_boolean ("presentation",
4129                                                                "Presentation",
4130                                                                "Draw page in presentation mode",
4131                                                                TRUE,
4132                                                                G_PARAM_READWRITE));
4133
4134         g_object_class_install_property (object_class,
4135                                          PROP_SIZING_MODE,
4136                                          g_param_spec_enum ("sizing-mode",
4137                                                             "Sizing Mode",
4138                                                             "Sizing Mode",
4139                                                             EV_TYPE_SIZING_MODE,
4140                                                             EV_SIZING_FIT_WIDTH,
4141                                                             G_PARAM_READWRITE));
4142
4143         g_object_class_install_property (object_class,
4144                                          PROP_ZOOM,
4145                                          g_param_spec_double ("zoom",
4146                                                               "Zoom factor",
4147                                                               "Zoom factor",
4148                                                               0,
4149                                                               G_MAXDOUBLE,
4150                                                               1.0,
4151                                                               G_PARAM_READWRITE));
4152         g_object_class_install_property (object_class,
4153                                          PROP_ROTATION,
4154                                          g_param_spec_double ("rotation",
4155                                                               "Rotation",
4156                                                               "Rotation",
4157                                                               0,
4158                                                               360,
4159                                                               0,
4160                                                               G_PARAM_READWRITE));
4161         g_object_class_install_property (object_class,
4162                                          PROP_HAS_SELECTION,
4163                                          g_param_spec_boolean ("has-selection",
4164                                                                "Has selection",
4165                                                                "The view has selections",
4166                                                                FALSE,
4167                                                                G_PARAM_READABLE));
4168
4169         binding_set = gtk_binding_set_by_class (class);
4170
4171         add_scroll_binding_keypad (binding_set, GDK_Left,  0, EV_SCROLL_STEP_BACKWARD, TRUE);
4172         add_scroll_binding_keypad (binding_set, GDK_Right, 0, EV_SCROLL_STEP_FORWARD,  TRUE);
4173         add_scroll_binding_keypad (binding_set, GDK_Left,  GDK_MOD1_MASK, EV_SCROLL_STEP_DOWN, TRUE);
4174         add_scroll_binding_keypad (binding_set, GDK_Right, GDK_MOD1_MASK, EV_SCROLL_STEP_UP,  TRUE);
4175         add_scroll_binding_keypad (binding_set, GDK_Up,    0, EV_SCROLL_STEP_BACKWARD, FALSE);
4176         add_scroll_binding_keypad (binding_set, GDK_Down,  0, EV_SCROLL_STEP_FORWARD,  FALSE);
4177         add_scroll_binding_keypad (binding_set, GDK_Up,    GDK_MOD1_MASK, EV_SCROLL_STEP_DOWN, FALSE);
4178         add_scroll_binding_keypad (binding_set, GDK_Down,  GDK_MOD1_MASK, EV_SCROLL_STEP_UP,  FALSE);
4179         gtk_binding_entry_add_signal (binding_set, GDK_H, 0, "binding_activated", 2, EV_TYPE_SCROLL_TYPE,
4180                                       EV_SCROLL_STEP_BACKWARD, G_TYPE_BOOLEAN, TRUE);
4181         gtk_binding_entry_add_signal (binding_set, GDK_J, 0, "binding_activated", 2, EV_TYPE_SCROLL_TYPE,
4182                                       EV_SCROLL_STEP_FORWARD, G_TYPE_BOOLEAN, FALSE);
4183         gtk_binding_entry_add_signal (binding_set, GDK_K, 0, "binding_activated", 2, EV_TYPE_SCROLL_TYPE,
4184                                       EV_SCROLL_STEP_BACKWARD, G_TYPE_BOOLEAN, FALSE);
4185         gtk_binding_entry_add_signal (binding_set, GDK_L, 0, "binding_activated", 2, EV_TYPE_SCROLL_TYPE,
4186                                       EV_SCROLL_STEP_FORWARD, G_TYPE_BOOLEAN, TRUE);
4187
4188 }
4189
4190 static void
4191 ev_view_init (EvView *view)
4192 {
4193         GTK_WIDGET_SET_FLAGS (view, GTK_CAN_FOCUS);
4194
4195         view->spacing = 5;
4196         view->scale = 1.0;
4197         view->current_page = 0;
4198         view->pressed_button = -1;
4199         view->cursor = EV_VIEW_CURSOR_NORMAL;
4200         view->drag_info.in_drag = FALSE;
4201         view->scroll_info.autoscrolling = FALSE;
4202         view->selection_info.selections = NULL;
4203         view->selection_info.in_selection = FALSE;
4204         view->selection_info.in_drag = FALSE;
4205         view->selection_mode = EV_VIEW_SELECTION_TEXT;
4206         view->continuous = TRUE;
4207         view->dual_page = FALSE;
4208         view->presentation = FALSE;
4209         view->presentation_state = EV_PRESENTATION_NORMAL;
4210         view->fullscreen = FALSE;
4211         view->sizing_mode = EV_SIZING_FIT_WIDTH;
4212         view->pending_scroll = SCROLL_TO_KEEP_POSITION;
4213         view->jump_to_find_result = TRUE;
4214         view->highlight_find_results = FALSE;
4215
4216         gtk_layout_set_hadjustment (GTK_LAYOUT (view), NULL);
4217         gtk_layout_set_vadjustment (GTK_LAYOUT (view), NULL);
4218
4219         gtk_drag_dest_set (GTK_WIDGET (view),
4220                            GTK_DEST_DEFAULT_ALL,
4221                            view_drop_targets,
4222                            G_N_ELEMENTS (view_drop_targets),
4223                            GDK_ACTION_COPY);
4224 }
4225
4226 /*** Callbacks ***/
4227
4228 static void
4229 find_changed_cb (EvDocument *document, int page, EvView *view)
4230 {
4231         double percent;
4232         int n_pages;
4233
4234         percent = ev_document_find_get_progress
4235                         (EV_DOCUMENT_FIND (view->document));
4236         n_pages = ev_page_cache_get_n_pages (view->page_cache);
4237
4238         if (view->jump_to_find_result == TRUE) {
4239                 jump_to_find_page (view, EV_VIEW_FIND_NEXT, 0);
4240                 jump_to_find_result (view);
4241         }
4242         update_find_status_message (view, percent * n_pages >= n_pages - 1 );
4243         if (view->current_page == page)
4244                 gtk_widget_queue_draw (GTK_WIDGET (view));
4245 }
4246
4247 static void
4248 ev_view_change_page (EvView *view,
4249                      gint    new_page)
4250 {
4251         gint x, y;
4252
4253         view->current_page = new_page;
4254         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
4255
4256         if (view->presentation)
4257                 ev_view_presentation_transition_start (view);
4258
4259         gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
4260         ev_view_handle_cursor_over_xy (view, x, y);
4261
4262         gtk_widget_queue_resize (GTK_WIDGET (view));
4263 }
4264
4265 static void
4266 ev_view_transition_animation_finish (EvTransitionAnimation *animation,
4267                                      EvView                *view)
4268 {
4269         g_object_unref (view->animation);
4270         view->animation = NULL;
4271         ev_view_change_page (view, view->current_page);
4272 }
4273
4274 static void
4275 ev_view_transition_animation_frame (EvTransitionAnimation *animation,
4276                                     gdouble                progress,
4277                                     EvView                *view)
4278 {
4279         gtk_widget_queue_draw (GTK_WIDGET (view));
4280 }
4281
4282 static void
4283 ev_view_presentation_animation_start (EvView *view,
4284                                       int     new_page)
4285 {
4286         EvTransitionEffect *effect = NULL;
4287         cairo_surface_t *surface;
4288
4289         if (EV_IS_DOCUMENT_TRANSITION (view->document))
4290                 effect = ev_document_transition_get_effect (EV_DOCUMENT_TRANSITION (view->document),
4291                                                             view->current_page);
4292         if (!effect)
4293                 return;
4294
4295         surface = ev_pixbuf_cache_get_surface (view->pixbuf_cache, view->current_page);
4296         view->animation = ev_transition_animation_new (effect);
4297         ev_transition_animation_set_origin_surface (view->animation, surface);
4298
4299         g_signal_connect (view->animation, "frame",
4300                           G_CALLBACK (ev_view_transition_animation_frame), view);
4301         g_signal_connect (view->animation, "finished",
4302                           G_CALLBACK (ev_view_transition_animation_finish), view);
4303 }
4304
4305 static void
4306 job_finished_cb (EvPixbufCache *pixbuf_cache,
4307                  GdkRegion     *region,
4308                  EvView        *view)
4309 {
4310         if (view->animation) {
4311                 cairo_surface_t *surface;
4312
4313                 surface = ev_pixbuf_cache_get_surface (pixbuf_cache, view->current_page);
4314                 ev_transition_animation_set_dest_surface (view->animation, surface);
4315         }
4316
4317         if (region) {
4318                 gdk_window_invalidate_region (view->layout.bin_window,
4319                                               region, TRUE);
4320         } else {
4321                 gtk_widget_queue_draw (GTK_WIDGET (view));
4322         }
4323 }
4324
4325 static void
4326 page_changed_cb (EvPageCache *page_cache,
4327                  int          new_page,
4328                  EvView      *view)
4329 {
4330         if (view->current_page != new_page) {
4331                 if (view->presentation)
4332                         ev_view_presentation_animation_start (view, new_page);
4333
4334                 ev_view_change_page (view, new_page);
4335         } else {
4336                 gtk_widget_queue_draw (GTK_WIDGET (view));
4337         }
4338
4339         if (EV_IS_DOCUMENT_FIND (view->document)) {
4340                 view->find_result = 0;
4341                 update_find_status_message (view, TRUE);
4342         }
4343 }
4344
4345 static void
4346 on_adjustment_value_changed (GtkAdjustment *adjustment,
4347                              EvView        *view)
4348 {
4349         int dx = 0, dy = 0;
4350         gint x, y;
4351         GList *children, *l;
4352
4353         if (! GTK_WIDGET_REALIZED (view))
4354                 return;
4355
4356         if (view->hadjustment) {
4357                 dx = view->scroll_x - (int) view->hadjustment->value;
4358                 view->scroll_x = (int) view->hadjustment->value;
4359         } else {
4360                 view->scroll_x = 0;
4361         }
4362
4363         if (view->vadjustment) {
4364                 dy = view->scroll_y - (int) view->vadjustment->value;
4365                 view->scroll_y = (int) view->vadjustment->value;
4366         } else {
4367                 view->scroll_y = 0;
4368         }
4369
4370         children = gtk_container_get_children (GTK_CONTAINER (view));
4371         for (l = children; l && l->data; l = g_list_next (l)) {
4372                 gint       child_x, child_y;
4373                 GtkWidget *child = (GtkWidget *)l->data;
4374
4375                 gtk_container_child_get (GTK_CONTAINER (view),
4376                                          child,
4377                                          "x", &child_x,
4378                                          "y", &child_y,
4379                                          NULL);
4380                 gtk_layout_move (GTK_LAYOUT (view), child, child_x + dx, child_y + dy);
4381         }
4382         g_list_free (children);
4383
4384         if (view->pending_resize)
4385                 gtk_widget_queue_draw (GTK_WIDGET (view));
4386         else
4387                 gdk_window_scroll (view->layout.bin_window, dx, dy);
4388
4389         gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
4390         ev_view_handle_cursor_over_xy (view, x, y);
4391
4392         if (view->document)
4393                 view_update_range_and_current_page (view);
4394 }
4395
4396 GtkWidget*
4397 ev_view_new (void)
4398 {
4399         GtkWidget *view;
4400
4401         view = g_object_new (EV_TYPE_VIEW, NULL);
4402
4403         return view;
4404 }
4405
4406 static void
4407 setup_caches (EvView *view)
4408 {
4409         view->page_cache = ev_page_cache_get (view->document);
4410         g_signal_connect (view->page_cache, "page-changed", G_CALLBACK (page_changed_cb), view);
4411         view->pixbuf_cache = ev_pixbuf_cache_new (GTK_WIDGET (view), view->document);
4412         g_signal_connect (view->pixbuf_cache, "job-finished", G_CALLBACK (job_finished_cb), view);
4413         page_changed_cb (view->page_cache,
4414                          ev_page_cache_get_current_page (view->page_cache),
4415                          view);
4416 }
4417
4418 static void
4419 clear_caches (EvView *view)
4420 {
4421         if (view->pixbuf_cache) {
4422                 g_object_unref (view->pixbuf_cache);
4423                 view->pixbuf_cache = NULL;
4424         }
4425
4426         if (view->page_cache) {
4427                 view->page_cache = NULL;
4428         }
4429 }
4430
4431 void
4432 ev_view_set_loading (EvView       *view,
4433                      gboolean      loading)
4434 {
4435         view->loading = loading;
4436         gtk_widget_queue_draw (GTK_WIDGET (view));
4437 }
4438
4439 static gboolean
4440 ev_view_autoscroll_cb (EvView *view)
4441 {
4442         gdouble speed, value;
4443
4444         /* If the user stops autoscrolling, autoscrolling will be
4445          * set to false but the timeout will continue; stop the timeout: */
4446         if (!view->scroll_info.autoscrolling) {
4447                 view->scroll_info.timeout_id = 0;
4448                 return FALSE;
4449         }
4450
4451         if (view->scroll_info.last_y > view->scroll_info.start_y &&
4452                 (view->scroll_info.last_y < view->scroll_info.start_y))
4453                 return TRUE;
4454
4455         /* Replace 100 with your speed of choice: The lower the faster.
4456          * Replace 3 with another speed of choice: The higher, the faster it accelerated
4457          *      based on the distance of the starting point from the mouse
4458          * (All also effected by the timeout interval of this callback) */
4459
4460         if (view->scroll_info.start_y > view->scroll_info.last_y)
4461                 speed = -pow ((((gdouble)view->scroll_info.start_y - view->scroll_info.last_y) / 100), 3);
4462         else
4463                 speed = pow ((((gdouble)view->scroll_info.last_y - view->scroll_info.start_y) / 100), 3);
4464
4465         value = gtk_adjustment_get_value (view->vadjustment);
4466         value = CLAMP (value + speed, 0, view->vadjustment->upper - view->vadjustment->page_size);
4467         gtk_adjustment_set_value (view->vadjustment, value);
4468
4469         return TRUE;
4470
4471 }
4472
4473 void
4474 ev_view_autoscroll_start (EvView *view)
4475 {
4476         gint x, y;
4477
4478         g_return_if_fail (EV_IS_VIEW (view));
4479
4480         if (view->scroll_info.autoscrolling)
4481                 return;
4482
4483         view->scroll_info.autoscrolling = TRUE;
4484         view->scroll_info.timeout_id =
4485                 g_timeout_add (20, (GSourceFunc)ev_view_autoscroll_cb,
4486                                view);
4487
4488         gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
4489         ev_view_handle_cursor_over_xy (view, x, y);
4490 }
4491
4492 void
4493 ev_view_autoscroll_stop (EvView *view)
4494 {
4495         gint x, y;
4496
4497         g_return_if_fail (EV_IS_VIEW (view));
4498
4499         if (!view->scroll_info.autoscrolling)
4500                 return;
4501
4502         view->scroll_info.autoscrolling = FALSE;
4503         if (view->scroll_info.timeout_id) {
4504                 g_source_remove (view->scroll_info.timeout_id);
4505                 view->scroll_info.timeout_id = 0;
4506         }
4507
4508         gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
4509         ev_view_handle_cursor_over_xy (view, x, y);
4510 }
4511
4512 void
4513 ev_view_set_document (EvView     *view,
4514                       EvDocument *document)
4515 {
4516         g_return_if_fail (EV_IS_VIEW (view));
4517
4518         view->loading = FALSE;
4519
4520         if (document != view->document) {
4521                 clear_caches (view);
4522
4523                 if (view->document) {
4524                         g_signal_handlers_disconnect_by_func (view->document,
4525                                                               find_changed_cb,
4526                                                               view);
4527                         g_object_unref (view->document);
4528                         view->page_cache = NULL;
4529
4530                 }
4531
4532                 view->document = document;
4533                 view->find_result = 0;
4534
4535                 if (view->document) {
4536                         g_object_ref (view->document);
4537                         if (EV_IS_DOCUMENT_FIND (view->document)) {
4538                                 g_signal_connect (view->document,
4539                                                   "find_changed",
4540                                                   G_CALLBACK (find_changed_cb),
4541                                                   view);
4542                         }
4543
4544                         setup_caches (view);
4545                 }
4546
4547                 gtk_widget_queue_resize (GTK_WIDGET (view));
4548         }
4549 }
4550
4551 /*** Zoom and sizing mode ***/
4552
4553 #define EPSILON 0.0000001
4554 void
4555 ev_view_set_zoom (EvView   *view,
4556                   double    factor,
4557                   gboolean  relative)
4558 {
4559         double scale;
4560
4561         if (relative)
4562                 scale = view->scale * factor;
4563         else
4564                 scale = factor;
4565
4566         scale = CLAMP (scale,
4567                        view->sizing_mode == EV_SIZING_FREE ? view->min_scale : 0,
4568                        view->max_scale);
4569
4570         if (ABS (view->scale - scale) < EPSILON)
4571                 return;
4572
4573         if (view->loading_text) {
4574                 cairo_surface_destroy (view->loading_text);
4575                 view->loading_text = NULL;
4576         }
4577
4578         view->scale = scale;
4579         view->pending_resize = TRUE;
4580
4581         gtk_widget_queue_resize (GTK_WIDGET (view));
4582
4583         g_object_notify (G_OBJECT (view), "zoom");
4584 }
4585
4586 double
4587 ev_view_get_zoom (EvView *view)
4588 {
4589         return view->scale;
4590 }
4591
4592 void
4593 ev_view_set_screen_dpi (EvView  *view,
4594                         gdouble  dpi)
4595 {
4596         g_return_if_fail (EV_IS_VIEW (view));
4597         g_return_if_fail (dpi > 0);
4598
4599         view->dpi = dpi;
4600         view->min_scale = MIN_SCALE * dpi / 72.0;
4601         view->max_scale = MAX_SCALE * dpi / 72.0;
4602 }
4603
4604 gboolean
4605 ev_view_get_continuous (EvView *view)
4606 {
4607         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
4608
4609         return view->continuous;
4610 }
4611
4612 void
4613 ev_view_set_continuous (EvView   *view,
4614                         gboolean  continuous)
4615 {
4616         g_return_if_fail (EV_IS_VIEW (view));
4617
4618         continuous = continuous != FALSE;
4619
4620         if (view->continuous != continuous) {
4621                 view->continuous = continuous;
4622                 view->pending_scroll = SCROLL_TO_PAGE_POSITION;
4623                 gtk_widget_queue_resize (GTK_WIDGET (view));
4624         }
4625
4626         g_object_notify (G_OBJECT (view), "continuous");
4627 }
4628
4629 gboolean
4630 ev_view_get_dual_page (EvView *view)
4631 {
4632         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
4633
4634         return view->dual_page;
4635 }
4636
4637 void
4638 ev_view_set_dual_page (EvView   *view,
4639                        gboolean  dual_page)
4640 {
4641         g_return_if_fail (EV_IS_VIEW (view));
4642
4643         dual_page = dual_page != FALSE;
4644
4645         if (view->dual_page == dual_page)
4646                 return;
4647
4648         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
4649         view->dual_page = dual_page;
4650         /* FIXME: if we're keeping the pixbuf cache around, we should extend the
4651          * preload_cache_size to be 2 if dual_page is set.
4652          */
4653         gtk_widget_queue_resize (GTK_WIDGET (view));
4654
4655         g_object_notify (G_OBJECT (view), "dual-page");
4656 }
4657
4658 void
4659 ev_view_set_fullscreen (EvView   *view,
4660                          gboolean  fullscreen)
4661 {
4662         g_return_if_fail (EV_IS_VIEW (view));
4663
4664         fullscreen = fullscreen != FALSE;
4665
4666         if (view->fullscreen == fullscreen)
4667                 return;
4668
4669         view->fullscreen = fullscreen;
4670         gtk_widget_queue_resize (GTK_WIDGET (view));
4671
4672         g_object_notify (G_OBJECT (view), "fullscreen");
4673 }
4674
4675 gboolean
4676 ev_view_get_fullscreen (EvView *view)
4677 {
4678         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
4679
4680         return view->fullscreen;
4681 }
4682
4683 void
4684 ev_view_set_presentation (EvView   *view,
4685                           gboolean  presentation)
4686 {
4687         g_return_if_fail (EV_IS_VIEW (view));
4688
4689         presentation = presentation != FALSE;
4690
4691         if (view->presentation == presentation)
4692                 return;
4693
4694         if (!presentation)
4695                 view->presentation_state = EV_PRESENTATION_NORMAL;
4696
4697         view->presentation = presentation;
4698         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
4699
4700         if (presentation) {
4701                 view->sizing_mode_saved = view->sizing_mode;
4702                 view->scale_saved = view->scale;
4703                 ev_view_set_sizing_mode (view, EV_SIZING_BEST_FIT);
4704         } else {
4705                 ev_view_set_sizing_mode (view, view->sizing_mode_saved);
4706                 ev_view_set_zoom (view, view->scale_saved, FALSE);
4707         }
4708
4709         gtk_widget_queue_resize (GTK_WIDGET (view));
4710
4711         if (presentation)
4712                 ev_view_presentation_transition_start (view);
4713         else {
4714                 ev_view_presentation_transition_stop (view);
4715
4716                 if (view->animation) {
4717                         /* stop any running animation */
4718                         ev_view_transition_animation_finish (view->animation, view);
4719                 }
4720         }
4721
4722         if (GTK_WIDGET_REALIZED (view)) {
4723                 if (view->presentation)
4724                         gdk_window_set_background (view->layout.bin_window,
4725                                                    &GTK_WIDGET (view)->style->black);
4726                 else
4727                         gdk_window_set_background (view->layout.bin_window,
4728                                                    &GTK_WIDGET (view)->style->mid [GTK_STATE_NORMAL]);
4729         }
4730
4731         g_object_notify (G_OBJECT (view), "presentation");
4732 }
4733
4734 gboolean
4735 ev_view_get_presentation (EvView *view)
4736 {
4737         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
4738
4739         return view->presentation;
4740 }
4741
4742 static gboolean
4743 transition_next_page (EvView *view)
4744 {
4745         ev_view_next_page (view);
4746
4747         return FALSE;
4748 }
4749
4750 static void
4751 ev_view_presentation_transition_stop (EvView *view)
4752 {
4753         if (view->trans_timeout_id > 0)
4754                 g_source_remove (view->trans_timeout_id);
4755         view->trans_timeout_id = 0;
4756 }
4757
4758 static void
4759 ev_view_presentation_transition_start (EvView *view)
4760 {
4761         gdouble duration;
4762
4763         if (!EV_IS_DOCUMENT_TRANSITION (view->document))
4764                 return;
4765
4766         ev_view_presentation_transition_stop (view);
4767
4768         duration = ev_document_transition_get_page_duration (EV_DOCUMENT_TRANSITION (view->document),
4769                                                              view->current_page);
4770         if (duration > 0) {
4771                 view->trans_timeout_id =
4772                         g_timeout_add_seconds (duration,
4773                                                (GSourceFunc) transition_next_page,
4774                                                view);
4775         }
4776 }
4777
4778 void
4779 ev_view_set_sizing_mode (EvView       *view,
4780                          EvSizingMode  sizing_mode)
4781 {
4782         g_return_if_fail (EV_IS_VIEW (view));
4783
4784         if (view->sizing_mode == sizing_mode)
4785                 return;
4786
4787         view->sizing_mode = sizing_mode;
4788         gtk_widget_queue_resize (GTK_WIDGET (view));
4789
4790         g_object_notify (G_OBJECT (view), "sizing-mode");
4791 }
4792
4793 EvSizingMode
4794 ev_view_get_sizing_mode (EvView *view)
4795 {
4796         g_return_val_if_fail (EV_IS_VIEW (view), EV_SIZING_FREE);
4797
4798         return view->sizing_mode;
4799 }
4800
4801 gboolean
4802 ev_view_can_zoom_in (EvView *view)
4803 {
4804         return view->scale * ZOOM_IN_FACTOR <= view->max_scale;
4805 }
4806
4807 gboolean
4808 ev_view_can_zoom_out (EvView *view)
4809 {
4810         return view->scale * ZOOM_OUT_FACTOR >= view->min_scale;
4811 }
4812
4813 void
4814 ev_view_zoom_in (EvView *view)
4815 {
4816         g_return_if_fail (view->sizing_mode == EV_SIZING_FREE);
4817
4818         if (view->presentation)
4819                 return;
4820
4821         view->pending_scroll = SCROLL_TO_CENTER;
4822         ev_view_set_zoom (view, ZOOM_IN_FACTOR, TRUE);
4823 }
4824
4825 void
4826 ev_view_zoom_out (EvView *view)
4827 {
4828         g_return_if_fail (view->sizing_mode == EV_SIZING_FREE);
4829
4830         if (view->presentation)
4831                 return;
4832
4833         view->pending_scroll = SCROLL_TO_CENTER;
4834         ev_view_set_zoom (view, ZOOM_OUT_FACTOR, TRUE);
4835 }
4836
4837 void
4838 ev_view_rotate_right (EvView *view)
4839 {
4840         int rotation = view->rotation + 90;
4841
4842         if (rotation >= 360) {
4843                 rotation -= 360;
4844         }
4845
4846         ev_view_set_rotation (view, rotation);
4847 }
4848
4849 void
4850 ev_view_rotate_left (EvView *view)
4851 {
4852         int rotation = view->rotation - 90;
4853
4854         if (rotation < 0) {
4855                 rotation += 360;
4856         }
4857
4858         ev_view_set_rotation (view, rotation);
4859 }
4860
4861 void
4862 ev_view_set_rotation (EvView *view, int rotation)
4863 {
4864         view->rotation = rotation;
4865
4866         if (view->pixbuf_cache) {
4867                 ev_pixbuf_cache_clear (view->pixbuf_cache);
4868                 gtk_widget_queue_resize (GTK_WIDGET (view));
4869         }
4870
4871         if (rotation != 0)
4872                 clear_selection (view);
4873
4874         g_object_notify (G_OBJECT (view), "rotation");
4875 }
4876
4877 int
4878 ev_view_get_rotation (EvView *view)
4879 {
4880         return view->rotation;
4881 }
4882
4883 static double
4884 zoom_for_size_fit_width (int doc_width,
4885                          int doc_height,
4886                          int target_width,
4887                          int target_height,
4888                          int vsb_width)
4889 {
4890         double scale;
4891
4892         scale = (double)target_width / doc_width;
4893
4894         if (doc_height * scale > target_height)
4895                 scale = (double) (target_width - vsb_width) / doc_width;
4896
4897         return scale;
4898 }
4899
4900 static double
4901 zoom_for_size_fit_height (int doc_width,
4902                           int doc_height,
4903                           int target_width,
4904                           int target_height,
4905                           int vsb_height)
4906 {
4907         double scale;
4908
4909         scale = (double)target_height / doc_height;
4910
4911         if (doc_width * scale > target_width)
4912                 scale = (double) (target_height - vsb_height) / doc_height;
4913
4914         return scale;
4915 }
4916
4917 static double
4918 zoom_for_size_best_fit (int doc_width,
4919                         int doc_height,
4920                         int target_width,
4921                         int target_height,
4922                         int vsb_width,
4923                         int hsb_width)
4924 {
4925         double w_scale;
4926         double h_scale;
4927
4928         w_scale = (double)target_width / doc_width;
4929         h_scale = (double)target_height / doc_height;
4930
4931         if (doc_height * w_scale > target_height)
4932                 w_scale = (double) (target_width - vsb_width) / doc_width;
4933         if (doc_width * h_scale > target_width)
4934                 h_scale = (double) (target_height - hsb_width) / doc_height;
4935
4936         return MIN (w_scale, h_scale);
4937 }
4938
4939
4940 static void
4941 ev_view_zoom_for_size_presentation (EvView *view,
4942                                     int     width,
4943                                     int     height)
4944 {
4945         int doc_width, doc_height;
4946         gdouble scale;
4947
4948         ev_page_cache_get_size (view->page_cache,
4949                                 view->current_page,
4950                                 view->rotation,
4951                                 1.0,
4952                                 &doc_width,
4953                                 &doc_height);
4954         scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, 0, 0);
4955         ev_view_set_zoom (view, scale, FALSE);
4956 }
4957
4958 static void
4959 ev_view_zoom_for_size_continuous_and_dual_page (EvView *view,
4960                            int     width,
4961                            int     height,
4962                            int     vsb_width,
4963                            int     hsb_height)
4964 {
4965         int doc_width, doc_height;
4966         GtkBorder border;
4967         gdouble scale;
4968
4969         ev_page_cache_get_max_width (view->page_cache,
4970                                      view->rotation,
4971                                      1.0,
4972                                      &doc_width);
4973         ev_page_cache_get_max_height (view->page_cache,
4974                                       view->rotation,
4975                                       1.0,
4976                                       &doc_height);
4977         compute_border (view, doc_width, doc_height, &border);
4978
4979         doc_width = doc_width * 2;
4980         width -= (2 * (border.left + border.right) + 3 * view->spacing);
4981         height -= (border.top + border.bottom + 2 * view->spacing - 1);
4982
4983         /* FIXME: We really need to calculate the overall height here, not the
4984          * page height.  We assume there's always a vertical scrollbar for
4985          * now.  We need to fix this. */
4986         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
4987                 scale = zoom_for_size_fit_width (doc_width, doc_height, width - vsb_width, height, 0);
4988         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
4989                 scale = zoom_for_size_best_fit (doc_width, doc_height, width - vsb_width, height, 0, hsb_height);
4990         else
4991                 g_assert_not_reached ();
4992
4993         ev_view_set_zoom (view, scale, FALSE);
4994 }
4995
4996 static void
4997 ev_view_zoom_for_size_continuous (EvView *view,
4998                                   int     width,
4999                                   int     height,
5000                                   int     vsb_width,
5001                                   int     hsb_height)
5002 {
5003         int doc_width, doc_height;
5004         GtkBorder border;
5005         gdouble scale;
5006
5007         ev_page_cache_get_max_width (view->page_cache,
5008                                      view->rotation,
5009                                      1.0,
5010                                      &doc_width);
5011         ev_page_cache_get_max_height (view->page_cache,
5012                                       view->rotation,
5013                                       1.0,
5014                                       &doc_height);
5015         compute_border (view, doc_width, doc_height, &border);
5016
5017         width -= (border.left + border.right + 2 * view->spacing);
5018         height -= (border.top + border.bottom + 2 * view->spacing - 1);
5019
5020         /* FIXME: We really need to calculate the overall height here, not the
5021          * page height.  We assume there's always a vertical scrollbar for
5022          * now.  We need to fix this. */
5023         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
5024                 scale = zoom_for_size_fit_width (doc_width, doc_height, width - vsb_width, height, 0);
5025         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
5026                 scale = zoom_for_size_best_fit (doc_width, doc_height, width - vsb_width, height, 0, hsb_height);
5027         else
5028                 g_assert_not_reached ();
5029
5030         ev_view_set_zoom (view, scale, FALSE);
5031 }
5032
5033 static void
5034 ev_view_zoom_for_size_dual_page (EvView *view,
5035                                  int     width,
5036                                  int     height,
5037                                  int     vsb_width,
5038                                  int     hsb_height)
5039 {
5040         GtkBorder border;
5041         gint doc_width, doc_height;
5042         gdouble scale;
5043         gint other_page;
5044
5045         other_page = view->current_page ^ 1;
5046
5047         /* Find the largest of the two. */
5048         ev_page_cache_get_size (view->page_cache,
5049                                 view->current_page,
5050                                 view->rotation,
5051                                 1.0,
5052                                 &doc_width, &doc_height);
5053
5054         if (other_page < ev_page_cache_get_n_pages (view->page_cache)) {
5055                 gint width_2, height_2;
5056                 ev_page_cache_get_size (view->page_cache,
5057                                         other_page,
5058                                         view->rotation,
5059                                         1.0,
5060                                         &width_2, &height_2);
5061                 if (width_2 > doc_width)
5062                         doc_width = width_2;
5063                 if (height_2 > doc_height)
5064                         doc_height = height_2;
5065         }
5066         compute_border (view, doc_width, doc_height, &border);
5067
5068         doc_width = doc_width * 2;
5069         width -= ((border.left + border.right)* 2 + 3 * view->spacing);
5070         height -= (border.top + border.bottom + 2 * view->spacing);
5071
5072         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
5073                 scale = zoom_for_size_fit_width (doc_width, doc_height, width, height, vsb_width);
5074         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
5075                 scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, vsb_width, hsb_height);
5076         else
5077                 g_assert_not_reached ();
5078
5079         ev_view_set_zoom (view, scale, FALSE);
5080 }
5081
5082 static void
5083 ev_view_zoom_for_size_single_page (EvView *view,
5084                                    int     width,
5085                                    int     height,
5086                                    int     vsb_width,
5087                                    int     hsb_height)
5088 {
5089         int doc_width, doc_height;
5090         GtkBorder border;
5091         gdouble scale;
5092
5093         ev_page_cache_get_size (view->page_cache,
5094                                 view->current_page,
5095                                 view->rotation,
5096                                 1.0,
5097                                 &doc_width,
5098                                 &doc_height);
5099         /* Get an approximate border */
5100         compute_border (view, width, height, &border);
5101
5102         width -= (border.left + border.right + 2 * view->spacing);
5103         height -= (border.top + border.bottom + 2 * view->spacing);
5104
5105         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
5106                 scale = zoom_for_size_fit_width (doc_width, doc_height, width, height, vsb_width);
5107         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
5108                 scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, vsb_width, hsb_height);
5109         else
5110                 g_assert_not_reached ();
5111
5112         ev_view_set_zoom (view, scale, FALSE);
5113 }
5114
5115 static void
5116 ev_view_set_zoom_for_size (EvView *view,
5117                            int     width,
5118                            int     height,
5119                            int     vsb_width,
5120                            int     hsb_height)
5121 {
5122         g_return_if_fail (EV_IS_VIEW (view));
5123         g_return_if_fail (view->sizing_mode == EV_SIZING_FIT_WIDTH ||
5124                           view->sizing_mode == EV_SIZING_BEST_FIT);
5125         g_return_if_fail (width >= 0);
5126         g_return_if_fail (height >= 0);
5127
5128         if (view->document == NULL)
5129                 return;
5130
5131         if (view->presentation)
5132                 ev_view_zoom_for_size_presentation (view, width, height);
5133         else if (view->continuous && view->dual_page)
5134                 ev_view_zoom_for_size_continuous_and_dual_page (view, width, height, vsb_width, hsb_height);
5135         else if (view->continuous)
5136                 ev_view_zoom_for_size_continuous (view, width, height, vsb_width, hsb_height);
5137         else if (view->dual_page)
5138                 ev_view_zoom_for_size_dual_page (view, width, height, vsb_width, hsb_height);
5139         else
5140                 ev_view_zoom_for_size_single_page (view, width, height, vsb_width, hsb_height);
5141 }
5142
5143 /*** Find ***/
5144 static void
5145 update_find_status_message (EvView *view, gboolean this_page)
5146 {
5147         char *message;
5148
5149         if (this_page) {
5150                 int results;
5151
5152                 results = ev_document_find_get_n_results
5153                                 (EV_DOCUMENT_FIND (view->document),
5154                                  view->current_page);
5155                 /* TRANS: Sometimes this could be better translated as
5156                    "%d hit(s) on this page".  Therefore this string
5157                    contains plural cases. */
5158                 message = g_strdup_printf (ngettext ("%d found on this page",
5159                                                      "%d found on this page",
5160                                                      results),
5161                                            results);
5162         } else {
5163                 double percent;
5164
5165                 percent = ev_document_find_get_progress
5166                                 (EV_DOCUMENT_FIND (view->document));
5167                 message = g_strdup_printf (_("%3d%% remaining to search"),
5168                                            (int) ((1.0 - percent) * 100));
5169
5170         }
5171         ev_view_set_find_status (view, message);
5172         g_free (message);
5173 }
5174
5175 const char *
5176 ev_view_get_find_status (EvView *view)
5177 {
5178         g_return_val_if_fail (EV_IS_VIEW (view), NULL);
5179
5180         return view->find_status;
5181 }
5182
5183 static void
5184 ev_view_set_find_status (EvView *view, const char *message)
5185 {
5186         g_return_if_fail (EV_IS_VIEW (view));
5187
5188         g_free (view->find_status);
5189         view->find_status = g_strdup (message);
5190         g_object_notify (G_OBJECT (view), "find-status");
5191 }
5192
5193 static void
5194 jump_to_find_result (EvView *view)
5195 {
5196         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
5197         EvRectangle rect;
5198         GdkRectangle view_rect;
5199         int n_results;
5200         int page = view->current_page;
5201
5202         n_results = ev_document_find_get_n_results (find, page);
5203
5204         if (n_results > 0  && view->find_result < n_results) {
5205                 ev_document_find_get_result
5206                         (find, page, view->find_result, &rect);
5207
5208                 doc_rect_to_view_rect (view, page, &rect, &view_rect);
5209                 ensure_rectangle_is_visible (view, &view_rect);
5210         }
5211 }
5212
5213 /**
5214  * jump_to_find_page
5215  * @view: #EvView instance
5216  * @direction: Direction to look
5217  * @shift: Shift from current page
5218  *
5219  * Jumps to the first page that has occurences of searched word.
5220  * Uses a direction where to look and a shift from current page.
5221  *
5222  */
5223 static void
5224 jump_to_find_page (EvView *view, EvViewFindDirection direction, gint shift)
5225 {
5226         int n_pages, i;
5227
5228         n_pages = ev_page_cache_get_n_pages (view->page_cache);
5229
5230         for (i = 0; i < n_pages; i++) {
5231                 int has_results;
5232                 int page;
5233
5234                 if (direction == EV_VIEW_FIND_NEXT)
5235                         page = view->current_page + i;
5236                 else
5237                         page = view->current_page - i;
5238                 page += shift;
5239
5240                 if (page >= n_pages) {
5241                         page = page - n_pages;
5242                 }
5243                 if (page < 0)
5244                         page = page + n_pages;
5245
5246                 has_results = ev_document_find_page_has_results
5247                                 (EV_DOCUMENT_FIND (view->document), page);
5248                 if (has_results == -1) {
5249                         break;
5250                 } else if (has_results == 1) {
5251                         ev_page_cache_set_current_page (view->page_cache, page);
5252                         break;
5253                 }
5254         }
5255 }
5256
5257 gboolean
5258 ev_view_can_find_next (EvView *view)
5259 {
5260         if (EV_IS_DOCUMENT_FIND (view->document)) {
5261                 EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
5262                 int i, n_pages;
5263
5264                 n_pages = ev_page_cache_get_n_pages (view->page_cache);
5265                 for (i = 0; i < n_pages; i++) {
5266                         if (ev_document_find_get_n_results (find, i) > 0) {
5267                                 return TRUE;
5268                         }
5269                 }
5270         }
5271
5272         return FALSE;
5273 }
5274
5275 void
5276 ev_view_find_next (EvView *view)
5277 {
5278         int n_results, n_pages;
5279         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
5280
5281         n_results = ev_document_find_get_n_results (find, view->current_page);
5282
5283         n_pages = ev_page_cache_get_n_pages (view->page_cache);
5284
5285         view->find_result++;
5286
5287         if (view->find_result >= n_results) {
5288
5289                 view->find_result = 0;
5290                 jump_to_find_page (view, EV_VIEW_FIND_NEXT, 1);
5291                 jump_to_find_result (view);
5292         } else {
5293                 jump_to_find_result (view);
5294                 gtk_widget_queue_draw (GTK_WIDGET (view));
5295         }
5296 }
5297
5298 gboolean
5299 ev_view_can_find_previous (EvView *view)
5300 {
5301         if (EV_IS_DOCUMENT_FIND (view->document)) {
5302                 EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
5303                 int i, n_pages;
5304
5305                 n_pages = ev_page_cache_get_n_pages (view->page_cache);
5306                 for (i = n_pages - 1; i >= 0; i--) {
5307                         if (ev_document_find_get_n_results (find, i) > 0) {
5308                                 return TRUE;
5309                         }
5310                 }
5311         }
5312
5313         return FALSE;
5314 }
5315 void
5316 ev_view_find_previous (EvView *view)
5317 {
5318         int n_results, n_pages;
5319         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
5320         EvPageCache *page_cache;
5321
5322         page_cache = ev_page_cache_get (view->document);
5323
5324         n_results = ev_document_find_get_n_results (find, view->current_page);
5325
5326         n_pages = ev_page_cache_get_n_pages (page_cache);
5327
5328         view->find_result--;
5329
5330         if (view->find_result < 0) {
5331
5332                 jump_to_find_page (view, EV_VIEW_FIND_PREV, -1);
5333                 view->find_result = ev_document_find_get_n_results (find, view->current_page) - 1;
5334                 jump_to_find_result (view);
5335         } else {
5336                 jump_to_find_result (view);
5337                 gtk_widget_queue_draw (GTK_WIDGET (view));
5338         }
5339 }
5340
5341 void
5342 ev_view_search_changed (EvView *view)
5343 {
5344         /* search string has changed, focus on new search result */
5345         view->jump_to_find_result = TRUE;
5346 }
5347
5348 void
5349 ev_view_set_highlight_search (EvView *view, gboolean value)
5350 {
5351         view->highlight_find_results = value;
5352         gtk_widget_queue_draw (GTK_WIDGET (view));
5353 }
5354
5355 void
5356 ev_view_find_cancel (EvView *view)
5357 {
5358         if (EV_IS_DOCUMENT_FIND (view->document)) {
5359                 EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
5360
5361                 ev_document_find_cancel (find);
5362         }
5363 }
5364
5365 /*** Selections ***/
5366
5367 /* compute_new_selection_rect/text calculates the area currently selected by
5368  * view_rect.  each handles a different mode;
5369  */
5370 static GList *
5371 compute_new_selection_rect (EvView       *view,
5372                             GdkPoint     *start,
5373                             GdkPoint     *stop)
5374 {
5375         GdkRectangle view_rect;
5376         int n_pages, i;
5377         GList *list = NULL;
5378
5379         g_assert (view->selection_mode == EV_VIEW_SELECTION_RECTANGLE);
5380
5381         view_rect.x = MIN (start->x, stop->x);
5382         view_rect.y = MIN (start->y, stop->y);
5383         view_rect.width = MAX (start->x, stop->x) - view_rect.x;
5384         view_rect.width = MAX (start->y, stop->y) - view_rect.y;
5385
5386         n_pages = ev_page_cache_get_n_pages (view->page_cache);
5387
5388         for (i = 0; i < n_pages; i++) {
5389                 GdkRectangle page_area;
5390                 GtkBorder border;
5391
5392                 if (get_page_extents (view, i, &page_area, &border)) {
5393                         GdkRectangle overlap;
5394
5395                         if (gdk_rectangle_intersect (&page_area, &view_rect, &overlap)) {
5396                                 EvViewSelection *selection;
5397
5398                                 selection = g_new0 (EvViewSelection, 1);
5399                                 selection->page = i;
5400                                 view_rect_to_doc_rect (view, &overlap, &page_area,
5401                                                        &(selection->rect));
5402
5403                                 list = g_list_append (list, selection);
5404                         }
5405                 }
5406         }
5407
5408         return list;
5409 }
5410
5411 static gboolean
5412 gdk_rectangle_point_in (GdkRectangle *rectangle,
5413                         GdkPoint     *point)
5414 {
5415         return rectangle->x <= point->x &&
5416                 rectangle->y <= point->y &&
5417                 point->x < rectangle->x + rectangle->width &&
5418                 point->y < rectangle->y + rectangle->height;
5419 }
5420
5421 static GList *
5422 compute_new_selection_text (EvView          *view,
5423                             EvSelectionStyle style,
5424                             GdkPoint        *start,
5425                             GdkPoint        *stop)
5426 {
5427         int n_pages, i, first, last;
5428         GList *list = NULL;
5429         EvViewSelection *selection;
5430         gint width, height;
5431         int start_page, end_page;
5432
5433         g_assert (view->selection_mode == EV_VIEW_SELECTION_TEXT);
5434
5435         n_pages = ev_page_cache_get_n_pages (view->page_cache);
5436
5437         /* First figure out the range of pages the selection
5438          * affects. */
5439         first = n_pages;
5440         last = 0;
5441         if (view->continuous) {
5442                 start_page = 0;
5443                 end_page = n_pages;
5444         } else if (view->dual_page) {
5445                 start_page = view->start_page;
5446                 end_page = view->end_page + 1;
5447         } else {
5448                 start_page = view->current_page;
5449                 end_page = view->current_page + 1;
5450         }
5451
5452         for (i = start_page; i < end_page; i++) {
5453                 GdkRectangle page_area;
5454                 GtkBorder border;
5455
5456                 get_page_extents (view, i, &page_area, &border);
5457                 if (gdk_rectangle_point_in (&page_area, start) ||
5458                     gdk_rectangle_point_in (&page_area, stop)) {
5459                         if (first == n_pages)
5460                                 first = i;
5461                         last = i;
5462                 }
5463
5464         }
5465
5466         /* Now create a list of EvViewSelection's for the affected
5467          * pages.  This could be an empty list, a list of just one
5468          * page or a number of pages.*/
5469         for (i = first; i < last + 1; i++) {
5470                 GdkRectangle page_area;
5471                 GtkBorder border;
5472                 GdkPoint *point;
5473
5474                 ev_page_cache_get_size (view->page_cache, i,
5475                                         view->rotation,
5476                                         1.0, &width, &height);
5477
5478                 selection = g_new0 (EvViewSelection, 1);
5479                 selection->page = i;
5480                 selection->style = style;
5481                 selection->rect.x1 = selection->rect.y1 = 0;
5482                 selection->rect.x2 = width;
5483                 selection->rect.y2 = height;
5484
5485                 get_page_extents (view, i, &page_area, &border);
5486
5487                 if (gdk_rectangle_point_in (&page_area, start))
5488                         point = start;
5489                 else
5490                         point = stop;
5491
5492                 if (i == first)
5493                         view_point_to_doc_point (view, point, &page_area,
5494                                                  &selection->rect.x1,
5495                                                  &selection->rect.y1);
5496
5497                 /* If the selection is contained within just one page,
5498                  * make sure we don't write 'start' into both points
5499                  * in selection->rect. */
5500                 if (first == last)
5501                         point = stop;
5502
5503                 if (i == last)
5504                         view_point_to_doc_point (view, point, &page_area,
5505                                                  &selection->rect.x2,
5506                                                  &selection->rect.y2);
5507
5508                 list = g_list_append (list, selection);
5509         }
5510
5511         return list;
5512 }
5513
5514 /* This function takes the newly calculated list, and figures out which regions
5515  * have changed.  It then queues a redraw approporiately.
5516  */
5517 static void
5518 merge_selection_region (EvView *view,
5519                         GList  *new_list)
5520 {
5521         GList *old_list;
5522         GList *new_list_ptr, *old_list_ptr;
5523
5524         /* Update the selection */
5525         old_list = ev_pixbuf_cache_get_selection_list (view->pixbuf_cache);
5526         g_list_foreach (view->selection_info.selections, (GFunc)selection_free, NULL);
5527         view->selection_info.selections = new_list;
5528         ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, new_list);
5529         g_object_notify (G_OBJECT (view), "has-selection");
5530
5531         new_list_ptr = new_list;
5532         old_list_ptr = old_list;
5533
5534         while (new_list_ptr || old_list_ptr) {
5535                 EvViewSelection *old_sel, *new_sel;
5536                 int cur_page;
5537                 GdkRegion *region = NULL;
5538
5539                 new_sel = (new_list_ptr) ? (new_list_ptr->data) : NULL;
5540                 old_sel = (old_list_ptr) ? (old_list_ptr->data) : NULL;
5541
5542                 /* Assume that the lists are in order, and we run through them
5543                  * comparing them, one page at a time.  We come out with the
5544                  * first page we see. */
5545                 if (new_sel && old_sel) {
5546                         if (new_sel->page < old_sel->page) {
5547                                 new_list_ptr = new_list_ptr->next;
5548                                 old_sel = NULL;
5549                         } else if (new_sel->page > old_sel->page) {
5550                                 old_list_ptr = old_list_ptr->next;
5551                                 new_sel = NULL;
5552                         } else {
5553                                 new_list_ptr = new_list_ptr->next;
5554                                 old_list_ptr = old_list_ptr->next;
5555                         }
5556                 } else if (new_sel) {
5557                         new_list_ptr = new_list_ptr->next;
5558                 } else if (old_sel) {
5559                         old_list_ptr = old_list_ptr->next;
5560                 }
5561
5562                 g_assert (new_sel || old_sel);
5563
5564                 /* is the page we're looking at on the screen?*/
5565                 cur_page = new_sel ? new_sel->page : old_sel->page;
5566                 if (cur_page < view->start_page || cur_page > view->end_page)
5567                         continue;
5568
5569                 /* seed the cache with a new page.  We are going to need the new
5570                  * region too. */
5571                 if (new_sel) {
5572                         GdkRegion *tmp_region = NULL;
5573
5574                         ev_pixbuf_cache_get_selection_surface (view->pixbuf_cache,
5575                                                                cur_page,
5576                                                                view->scale,
5577                                                                &tmp_region);
5578
5579                         if (tmp_region) {
5580                                 new_sel->covered_region = gdk_region_copy (tmp_region);
5581                         }
5582                 }
5583
5584                 /* Now we figure out what needs redrawing */
5585                 if (old_sel && new_sel) {
5586                         if (old_sel->covered_region && new_sel->covered_region) {
5587                                 /* We only want to redraw the areas that have
5588                                  * changed, so we xor the old and new regions
5589                                  * and redraw if it's different */
5590                                 region = gdk_region_copy (old_sel->covered_region);
5591                                 gdk_region_xor (region, new_sel->covered_region);
5592                                 if (gdk_region_empty (region)) {
5593                                         gdk_region_destroy (region);
5594                                         region = NULL;
5595                                 }
5596                         } else if (old_sel->covered_region) {
5597                                 region = gdk_region_copy (old_sel->covered_region);
5598                         } else if (new_sel->covered_region) {
5599                                 region = gdk_region_copy (new_sel->covered_region);
5600                         }
5601                 } else if (old_sel && !new_sel) {
5602                         if (old_sel->covered_region && !gdk_region_empty (old_sel->covered_region)) {
5603                                 region = gdk_region_copy (old_sel->covered_region);
5604                         }
5605                 } else if (!old_sel && new_sel) {
5606                         if (new_sel->covered_region && !gdk_region_empty (new_sel->covered_region)) {
5607                                 region = gdk_region_copy (new_sel->covered_region);
5608                         }
5609                 } else {
5610                         g_assert_not_reached ();
5611                 }
5612
5613                 /* Redraw the damaged region! */
5614                 if (region) {
5615                         GdkRectangle page_area;
5616                         GtkBorder border;
5617
5618                         /* I don't know why but the region is smaller
5619                          * than expected. This hack fixes it, I guess
5620                          * 10 pixels more won't hurt
5621                          */
5622                         gdk_region_shrink (region, -5, -5);
5623
5624                         get_page_extents (view, cur_page, &page_area, &border);
5625                         gdk_region_offset (region,
5626                                            page_area.x + border.left - view->scroll_x,
5627                                            page_area.y + border.top - view->scroll_y);
5628                         gdk_window_invalidate_region (view->layout.bin_window, region, TRUE);
5629                         gdk_region_destroy (region);
5630                 }
5631         }
5632
5633         /* Free the old list, now that we're done with it. */
5634         g_list_foreach (old_list, (GFunc) selection_free, NULL);
5635 }
5636
5637 static void
5638 compute_selections (EvView          *view,
5639                     EvSelectionStyle style,
5640                     GdkPoint        *start,
5641                     GdkPoint        *stop)
5642 {
5643         GList *list;
5644
5645         if (view->selection_mode == EV_VIEW_SELECTION_RECTANGLE)
5646                 list = compute_new_selection_rect (view, start, stop);
5647         else
5648                 list = compute_new_selection_text (view, style, start, stop);
5649         merge_selection_region (view, list);
5650 }
5651
5652 /* Free's the selection.  It's up to the caller to queue redraws if needed.
5653  */
5654 static void
5655 selection_free (EvViewSelection *selection)
5656 {
5657         if (selection->covered_region)
5658                 gdk_region_destroy (selection->covered_region);
5659         g_free (selection);
5660 }
5661
5662 static void
5663 clear_selection (EvView *view)
5664 {
5665         g_list_foreach (view->selection_info.selections, (GFunc)selection_free, NULL);
5666         view->selection_info.selections = NULL;
5667         view->selection_info.in_selection = FALSE;
5668         if (view->pixbuf_cache)
5669                 ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, NULL);
5670         g_object_notify (G_OBJECT (view), "has-selection");
5671 }
5672
5673 void
5674 ev_view_select_all (EvView *view)
5675 {
5676         GList *selections = NULL;
5677         int n_pages, i;
5678
5679         /* Disable selection on rotated pages for the 0.4.0 series */
5680         if (view->rotation != 0)
5681                 return;
5682
5683         clear_selection (view);
5684
5685         n_pages = ev_page_cache_get_n_pages (view->page_cache);
5686         for (i = 0; i < n_pages; i++) {
5687                 int width, height;
5688                 EvViewSelection *selection;
5689
5690                 ev_page_cache_get_size (view->page_cache,
5691                                         i,
5692                                         view->rotation,
5693                                         1.0, &width, &height);
5694
5695                 selection = g_new0 (EvViewSelection, 1);
5696                 selection->page = i;
5697                 selection->style = EV_SELECTION_STYLE_GLYPH;
5698                 selection->rect.x1 = selection->rect.y1 = 0;
5699                 selection->rect.x2 = width;
5700                 selection->rect.y2 = height;
5701
5702                 selections = g_list_append (selections, selection);
5703         }
5704
5705         merge_selection_region (view, selections);
5706         gtk_widget_queue_draw (GTK_WIDGET (view));
5707 }
5708
5709 gboolean
5710 ev_view_get_has_selection (EvView *view)
5711 {
5712         return view->selection_info.selections != NULL;
5713 }
5714
5715 static char *
5716 get_selected_text (EvView *view)
5717 {
5718         GString *text;
5719         GList *l;
5720         gchar *normalized_text;
5721         EvRenderContext *rc;
5722
5723         text = g_string_new (NULL);
5724         rc = ev_render_context_new (NULL, view->rotation, view->scale);
5725
5726         ev_document_doc_mutex_lock ();
5727
5728         for (l = view->selection_info.selections; l != NULL; l = l->next) {
5729                 EvViewSelection *selection = (EvViewSelection *)l->data;
5730                 EvPage *page;
5731                 gchar *tmp;
5732
5733                 page = ev_document_get_page (view->document, selection->page);
5734                 ev_render_context_set_page (rc, page);
5735                 g_object_unref (page);
5736
5737                 tmp = ev_selection_get_selected_text (EV_SELECTION (view->document),
5738                                                       rc, selection->style,
5739                                                       &(selection->rect));
5740
5741                 g_string_append (text, tmp);
5742                 g_free (tmp);
5743         }
5744
5745         g_object_unref (rc);
5746
5747         ev_document_doc_mutex_unlock ();
5748
5749         normalized_text = g_utf8_normalize (text->str, text->len, G_NORMALIZE_NFKC);
5750         g_string_free (text, TRUE);
5751         return normalized_text;
5752 }
5753
5754 static void
5755 ev_view_clipboard_copy (EvView      *view,
5756                         const gchar *text)
5757 {
5758         GtkClipboard *clipboard;
5759
5760         clipboard = gtk_widget_get_clipboard (GTK_WIDGET (view),
5761                                               GDK_SELECTION_CLIPBOARD);
5762         gtk_clipboard_set_text (clipboard, text, -1);
5763 }
5764
5765 void
5766 ev_view_copy (EvView *ev_view)
5767 {
5768         char *text;
5769
5770         if (!EV_IS_SELECTION (ev_view->document))
5771                 return;
5772
5773         text = get_selected_text (ev_view);
5774         ev_view_clipboard_copy (ev_view, text);
5775         g_free (text);
5776 }
5777
5778 static void
5779 ev_view_primary_get_cb (GtkClipboard     *clipboard,
5780                         GtkSelectionData *selection_data,
5781                         guint             info,
5782                         gpointer          data)
5783 {
5784         EvView *ev_view = EV_VIEW (data);
5785
5786         if (ev_view->link_selected) {
5787                 gtk_selection_data_set_text (selection_data,
5788                                              ev_link_action_get_uri (ev_view->link_selected),
5789                                              -1);
5790         } else if (EV_IS_SELECTION (ev_view->document) &&
5791                    ev_view->selection_info.selections) {
5792                 gchar *text;
5793
5794                 text = get_selected_text (ev_view);
5795                 if (text) {
5796                         gtk_selection_data_set_text (selection_data, text, -1);
5797                         g_free (text);
5798                 }
5799         }
5800 }
5801
5802 static void
5803 ev_view_primary_clear_cb (GtkClipboard *clipboard,
5804                           gpointer      data)
5805 {
5806         EvView *view = EV_VIEW (data);
5807
5808         clear_selection (view);
5809         clear_link_selected (view);
5810 }
5811
5812 static void
5813 ev_view_update_primary_selection (EvView *ev_view)
5814 {
5815         GtkClipboard *clipboard;
5816
5817         clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view),
5818                                               GDK_SELECTION_PRIMARY);
5819
5820         if (ev_view->selection_info.selections || ev_view->link_selected) {
5821                 if (!gtk_clipboard_set_with_owner (clipboard,
5822                                                    clipboard_targets,
5823                                                    G_N_ELEMENTS (clipboard_targets),
5824                                                    ev_view_primary_get_cb,
5825                                                    ev_view_primary_clear_cb,
5826                                                    G_OBJECT (ev_view)))
5827                         ev_view_primary_clear_cb (clipboard, ev_view);
5828         } else {
5829                 if (gtk_clipboard_get_owner (clipboard) == G_OBJECT (ev_view))
5830                         gtk_clipboard_clear (clipboard);
5831         }
5832 }
5833
5834 static void
5835 clear_link_selected (EvView *view)
5836 {
5837         if (view->link_selected) {
5838                 g_object_unref (view->link_selected);
5839                 view->link_selected = NULL;
5840         }
5841 }
5842
5843 void
5844 ev_view_copy_link_address (EvView       *view,
5845                            EvLinkAction *action)
5846 {
5847         clear_link_selected (view);
5848
5849         ev_view_clipboard_copy (view, ev_link_action_get_uri (action));
5850
5851         view->link_selected = g_object_ref (action);
5852         ev_view_update_primary_selection (view);
5853 }
5854
5855 /*** Cursor operations ***/
5856
5857 static GdkCursor *
5858 ev_view_create_invisible_cursor(void)
5859 {
5860        GdkBitmap *empty;
5861        GdkColor black = { 0, 0, 0, 0 };
5862        static char bits[] = { 0x00 };
5863
5864        empty = gdk_bitmap_create_from_data (NULL, bits, 1, 1);
5865
5866        return gdk_cursor_new_from_pixmap (empty, empty, &black, &black, 0, 0);
5867 }
5868
5869 static void
5870 ev_view_set_cursor (EvView *view, EvViewCursor new_cursor)
5871 {
5872         GdkCursor *cursor = NULL;
5873         GdkDisplay *display;
5874         GtkWidget *widget;
5875
5876         if (view->cursor == new_cursor) {
5877                 return;
5878         }
5879
5880         widget = gtk_widget_get_toplevel (GTK_WIDGET (view));
5881         display = gtk_widget_get_display (widget);
5882         view->cursor = new_cursor;
5883
5884         switch (new_cursor) {
5885                 case EV_VIEW_CURSOR_NORMAL:
5886                         gdk_window_set_cursor (view->layout.bin_window, NULL);
5887                         break;
5888                 case EV_VIEW_CURSOR_IBEAM:
5889                         cursor = gdk_cursor_new_for_display (display, GDK_XTERM);
5890                         break;
5891                 case EV_VIEW_CURSOR_LINK:
5892                         cursor = gdk_cursor_new_for_display (display, GDK_HAND2);
5893                         break;
5894                 case EV_VIEW_CURSOR_WAIT:
5895                         cursor = gdk_cursor_new_for_display (display, GDK_WATCH);
5896                         break;
5897                 case EV_VIEW_CURSOR_HIDDEN:
5898                         cursor = ev_view_create_invisible_cursor ();
5899                         break;
5900                 case EV_VIEW_CURSOR_DRAG:
5901                         cursor = gdk_cursor_new_for_display (display, GDK_FLEUR);
5902                         break;
5903                 case EV_VIEW_CURSOR_AUTOSCROLL:
5904                         cursor = gdk_cursor_new_for_display (display, GDK_DOUBLE_ARROW);
5905                         break;
5906         }
5907
5908         if (cursor) {
5909                 gdk_window_set_cursor (view->layout.bin_window, cursor);
5910                 gdk_cursor_unref (cursor);
5911                 gdk_flush();
5912         }
5913 }
5914
5915 void
5916 ev_view_hide_cursor (EvView *view)
5917 {
5918        ev_view_set_cursor (view, EV_VIEW_CURSOR_HIDDEN);
5919 }
5920
5921 void
5922 ev_view_show_cursor (EvView *view)
5923 {
5924        ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
5925 }
5926
5927 static void
5928 ev_view_reset_presentation_state (EvView *view)
5929 {
5930         if (!view->presentation ||
5931             view->presentation_state == EV_PRESENTATION_NORMAL)
5932                 return;
5933
5934         view->presentation_state = EV_PRESENTATION_NORMAL;
5935         gdk_window_set_background (view->layout.bin_window,
5936                                    &GTK_WIDGET (view)->style->black);
5937         gtk_widget_queue_draw (GTK_WIDGET (view));
5938 }
5939
5940 gboolean
5941 ev_view_next_page (EvView *view)
5942 {
5943         int page, n_pages;
5944
5945         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
5946
5947         if (!view->page_cache)
5948                 return FALSE;
5949
5950         if (view->presentation &&
5951             (view->presentation_state == EV_PRESENTATION_BLACK ||
5952              view->presentation_state == EV_PRESENTATION_WHITE)) {
5953                 ev_view_reset_presentation_state (view);
5954                 return FALSE;
5955         }
5956
5957         if (view->animation) {
5958                 ev_view_transition_animation_finish (view->animation, view);
5959                 return TRUE;
5960         }
5961
5962         ev_view_presentation_transition_stop (view);
5963         ev_view_reset_presentation_state (view);
5964
5965         page = ev_page_cache_get_current_page (view->page_cache);
5966         n_pages = ev_page_cache_get_n_pages (view->page_cache);
5967
5968         if (view->dual_page && !view->presentation)
5969                 page = page + 2;
5970         else
5971                 page = page + 1;
5972
5973         if (page < n_pages) {
5974                 ev_page_cache_set_current_page (view->page_cache, page);
5975                 return TRUE;
5976         } else if (view->presentation && page == n_pages) {
5977                 view->presentation_state = EV_PRESENTATION_END;
5978                 gtk_widget_queue_draw (GTK_WIDGET (view));
5979                 return TRUE;
5980         } else if (view->dual_page && page == n_pages) {
5981                 ev_page_cache_set_current_page (view->page_cache, page - 1);
5982                 return TRUE;
5983         } else {
5984                 return FALSE;
5985         }
5986 }
5987
5988 gboolean
5989 ev_view_previous_page (EvView *view)
5990 {
5991         int page;
5992
5993         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
5994
5995         if (!view->page_cache)
5996                 return FALSE;
5997
5998         if (view->presentation &&
5999             view->presentation_state == EV_PRESENTATION_END) {
6000                 ev_view_reset_presentation_state (view);
6001                 return TRUE;
6002         }
6003
6004         if (view->presentation &&
6005             (view->presentation_state == EV_PRESENTATION_BLACK ||
6006              view->presentation_state == EV_PRESENTATION_WHITE)) {
6007                 ev_view_reset_presentation_state (view);
6008                 return FALSE;
6009         }
6010
6011         if (view->animation) {
6012                 ev_view_transition_animation_finish (view->animation, view);
6013                 return TRUE;
6014         }
6015
6016         ev_view_reset_presentation_state (view);
6017
6018         page = ev_page_cache_get_current_page (view->page_cache);
6019
6020         if (view->dual_page && !view->presentation)
6021                 page = page - 2;
6022         else
6023                 page = page - 1;
6024
6025         if (page >= 0) {
6026                 ev_page_cache_set_current_page (view->page_cache, page);
6027                 return TRUE;
6028         } else if (ev_view_get_dual_page (view) && page == -1) {
6029                 ev_page_cache_set_current_page (view->page_cache, 0);
6030                 return TRUE;
6031         } else {
6032                 return FALSE;
6033         }
6034 }
6035
6036 /*** Enum description for usage in signal ***/
6037
6038 GType
6039 ev_sizing_mode_get_type (void)
6040 {
6041   static GType etype = 0;
6042   if (etype == 0) {
6043     static const GEnumValue values[] = {
6044       { EV_SIZING_FIT_WIDTH, "EV_SIZING_FIT_WIDTH", "fit-width" },
6045       { EV_SIZING_BEST_FIT, "EV_SIZING_BEST_FIT", "best-fit" },
6046       { EV_SIZING_FREE, "EV_SIZING_FREE", "free" },
6047       { 0, NULL, NULL }
6048     };
6049     etype = g_enum_register_static ("EvSizingMode", values);
6050   }
6051   return etype;
6052 }
6053
6054 GType
6055 ev_scroll_type_get_type (void)
6056 {
6057   static GType etype = 0;
6058   if (etype == 0) {
6059     static const GEnumValue values[] = {
6060       { EV_SCROLL_PAGE_FORWARD, "EV_SCROLL_PAGE_FORWARD", "scroll-page-forward" },
6061       { EV_SCROLL_PAGE_BACKWARD, "EV_SCROLL_PAGE_BACKWARD", "scroll-page-backward" },
6062       { EV_SCROLL_STEP_FORWARD, "EV_SCROLL_STEP_FORWARD", "scroll-step-forward" },
6063       { EV_SCROLL_STEP_FORWARD, "EV_SCROLL_STEP_FORWARD", "scroll-step-forward" },
6064       { EV_SCROLL_STEP_UP, "EV_SCROLL_STEP_UP", "scroll-step-up" },
6065       { EV_SCROLL_STEP_DOWN, "EV_SCROLL_STEP_DOWN", "scroll-step-down" },
6066       { 0, NULL, NULL }
6067     };
6068     etype = g_enum_register_static ("EvScrollType", values);
6069   }
6070   return etype;
6071 }
6072
6073 void
6074 ev_view_update_view_size (EvView *view, GtkScrolledWindow * scrolled_window)
6075 {
6076         int width, height;
6077         GtkRequisition vsb_requisition;
6078         GtkRequisition hsb_requisition;
6079         int scrollbar_spacing;
6080
6081         /* Calculate the width available for the content */
6082         width  = GTK_WIDGET (scrolled_window)->allocation.width;
6083         height = GTK_WIDGET (scrolled_window)->allocation.height;
6084
6085         if (gtk_scrolled_window_get_shadow_type (scrolled_window) == GTK_SHADOW_IN
6086             && view) {
6087                 width -=  2 * GTK_WIDGET(view)->style->xthickness;
6088                 height -= 2 * GTK_WIDGET(view)->style->ythickness;
6089         }
6090
6091         gtk_widget_size_request (scrolled_window->vscrollbar, &vsb_requisition);
6092         gtk_widget_size_request (scrolled_window->hscrollbar, &hsb_requisition);
6093         gtk_widget_style_get (GTK_WIDGET (scrolled_window),
6094                               "scrollbar_spacing",
6095                               &scrollbar_spacing,
6096                               NULL);
6097
6098         if (EV_IS_VIEW(view)) {
6099                 ev_view_set_zoom_for_size (EV_VIEW (view),
6100                                            MAX (1, width),
6101                                            MAX (1, height),
6102                                            vsb_requisition.width + scrollbar_spacing,
6103                                            hsb_requisition.height + scrollbar_spacing);
6104         }
6105 }