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                         view->presentation_state =
3444                                 (view->presentation_state == EV_PRESENTATION_BLACK) ?
3445                                 EV_PRESENTATION_NORMAL : EV_PRESENTATION_BLACK;
3446                         break;
3447                 case GDK_w:
3448                 case GDK_W:
3449                         view->presentation_state =
3450                                 (view->presentation_state == EV_PRESENTATION_WHITE) ?
3451                                 EV_PRESENTATION_NORMAL : EV_PRESENTATION_WHITE;
3452                         break;
3453                 default:
3454                         if (view->presentation_state == EV_PRESENTATION_BLACK ||
3455                             view->presentation_state == EV_PRESENTATION_WHITE) {
3456                                 view->presentation_state = EV_PRESENTATION_NORMAL;
3457                         }
3458         }
3459
3460         if (current == view->presentation_state) {
3461                 if (ev_page_cache_get_n_pages (view->page_cache) > 1 &&
3462                     key_is_numeric (event->keyval)) {
3463                         gint x, y;
3464
3465                         ev_view_goto_window_create (view);
3466                         ev_view_goto_window_send_key_event (view, (GdkEvent *)event);
3467                         gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
3468                         gtk_window_move (GTK_WINDOW (view->goto_window), x, y);
3469                         gtk_widget_show (view->goto_window);
3470                         ev_view_goto_entry_grab_focus (view);
3471
3472                         return TRUE;
3473                 }
3474
3475                 return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
3476         }
3477
3478         switch (view->presentation_state) {
3479                 case EV_PRESENTATION_NORMAL:
3480                 case EV_PRESENTATION_BLACK:
3481                         gdk_window_set_background (view->layout.bin_window,
3482                                                    &widget->style->black);
3483                         break;
3484                 case EV_PRESENTATION_WHITE:
3485                         gdk_window_set_background (view->layout.bin_window,
3486                                                    &widget->style->white);
3487                         break;
3488                 default:
3489                         return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
3490         }
3491
3492         gtk_widget_queue_draw (widget);
3493         return TRUE;
3494 }
3495
3496 static gint
3497 ev_view_focus_in (GtkWidget     *widget,
3498                   GdkEventFocus *event)
3499 {
3500         if (EV_VIEW (widget)->pixbuf_cache)
3501                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
3502         gtk_widget_queue_draw (widget);
3503
3504         return FALSE;
3505 }
3506
3507 static gint
3508 ev_view_focus_out (GtkWidget     *widget,
3509                      GdkEventFocus *event)
3510 {
3511         if (EV_VIEW (widget)->goto_window)
3512                 ev_view_goto_window_hide (EV_VIEW (widget));
3513
3514         if (EV_VIEW (widget)->pixbuf_cache)
3515                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
3516         gtk_widget_queue_draw (widget);
3517
3518         return FALSE;
3519 }
3520
3521 static gboolean
3522 ev_view_leave_notify_event (GtkWidget *widget, GdkEventCrossing   *event)
3523 {
3524         EvView *view = EV_VIEW (widget);
3525
3526         if (view->cursor != EV_VIEW_CURSOR_NORMAL)
3527                 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
3528
3529 #if !GTK_CHECK_VERSION (2, 11, 7)
3530         if (view->link_tooltip) {
3531                 view->hovered_link = NULL;
3532                 ev_tooltip_deactivate (EV_TOOLTIP (view->link_tooltip));
3533         }
3534 #endif
3535
3536         return FALSE;
3537 }
3538
3539 static gboolean
3540 ev_view_enter_notify_event (GtkWidget *widget, GdkEventCrossing   *event)
3541 {
3542         EvView *view = EV_VIEW (widget);
3543
3544         ev_view_handle_cursor_over_xy (view, event->x, event->y);
3545
3546         return FALSE;
3547 }
3548
3549 static void
3550 ev_view_style_set (GtkWidget *widget,
3551                    GtkStyle  *old_style)
3552 {
3553         if (EV_VIEW (widget)->pixbuf_cache)
3554                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
3555
3556         GTK_WIDGET_CLASS (ev_view_parent_class)->style_set (widget, old_style);
3557 }
3558
3559 /*** Drawing ***/
3560
3561 static guint32
3562 ev_gdk_color_to_rgb (const GdkColor *color)
3563 {
3564   guint32 result;
3565   result = (0xff0000 | (color->red & 0xff00));
3566   result <<= 8;
3567   result |= ((color->green & 0xff00) | (color->blue >> 8));
3568   return result;
3569 }
3570
3571 static void
3572 draw_rubberband (GtkWidget *widget, GdkWindow *window,
3573                  const GdkRectangle *rect, guchar alpha)
3574 {
3575         GdkGC *gc;
3576         GdkPixbuf *pixbuf;
3577         GdkColor *fill_color_gdk;
3578         guint fill_color;
3579
3580         fill_color_gdk = gdk_color_copy (&GTK_WIDGET (widget)->style->base[GTK_STATE_SELECTED]);
3581         fill_color = ev_gdk_color_to_rgb (fill_color_gdk) << 8 | alpha;
3582
3583         pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE, 8,
3584                                  rect->width, rect->height);
3585         gdk_pixbuf_fill (pixbuf, fill_color);
3586
3587         gdk_draw_pixbuf (window, NULL, pixbuf,
3588                          0, 0,
3589                          rect->x - EV_VIEW (widget)->scroll_x, rect->y - EV_VIEW (widget)->scroll_y,
3590                          rect->width, rect->height,
3591                          GDK_RGB_DITHER_NONE,
3592                          0, 0);
3593
3594         g_object_unref (pixbuf);
3595
3596         gc = gdk_gc_new (window);
3597         gdk_gc_set_rgb_fg_color (gc, fill_color_gdk);
3598         gdk_draw_rectangle (window, gc, FALSE,
3599                             rect->x - EV_VIEW (widget)->scroll_x, rect->y - EV_VIEW (widget)->scroll_y,
3600                             rect->width - 1,
3601                             rect->height - 1);
3602         g_object_unref (gc);
3603
3604         gdk_color_free (fill_color_gdk);
3605 }
3606
3607
3608 static void
3609 highlight_find_results (EvView *view, int page)
3610 {
3611         EvDocumentFind *find;
3612         int i, results = 0;
3613
3614         find = EV_DOCUMENT_FIND (view->document);
3615
3616         results = ev_document_find_get_n_results (find, page);
3617
3618         for (i = 0; i < results; i++) {
3619                 EvRectangle rectangle;
3620                 GdkRectangle view_rectangle;
3621                 guchar alpha;
3622
3623                 if (i == view->find_result && page == view->current_page) {
3624                         alpha = 0x90;
3625                 } else {
3626                         alpha = 0x20;
3627                 }
3628
3629                 ev_document_find_get_result (find, page, i, &rectangle);
3630                 doc_rect_to_view_rect (view, page, &rectangle, &view_rectangle);
3631                 draw_rubberband (GTK_WIDGET (view), view->layout.bin_window,
3632                                  &view_rectangle, alpha);
3633         }
3634 }
3635
3636 static void
3637 draw_loading_text (EvView       *view,
3638                    GdkRectangle *page_area,
3639                    GdkRectangle *expose_area)
3640 {
3641         cairo_t *cr;
3642         gint     width, height;
3643
3644         if (!view->loading_text) {
3645                 const gchar *loading_text = _("Loading...");
3646                 PangoLayout *layout;
3647                 PangoFontDescription *font_desc;
3648                 PangoRectangle logical_rect;
3649                 gint target_width;
3650                 gdouble real_scale;
3651
3652                 ev_document_fc_mutex_lock ();
3653
3654                 layout = gtk_widget_create_pango_layout (GTK_WIDGET (view), loading_text);
3655
3656                 font_desc = pango_font_description_new ();
3657
3658                 /* We set the font to be 10 points, get the size, and scale appropriately */
3659                 pango_font_description_set_size (font_desc, 10 * PANGO_SCALE);
3660                 pango_layout_set_font_description (layout, font_desc);
3661                 pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
3662
3663                 target_width = MAX (page_area->width / 2, 1);
3664                 real_scale = ((double)target_width / (double) logical_rect.width) * (PANGO_SCALE * 10);
3665                 pango_font_description_set_size (font_desc, (int)real_scale);
3666                 pango_layout_set_font_description (layout, font_desc);
3667                 pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
3668
3669                 view->loading_text = cairo_image_surface_create (CAIRO_FORMAT_ARGB32,
3670                                                                  logical_rect.width,
3671                                                                  logical_rect.height);
3672                 cr = cairo_create (view->loading_text);
3673                 cairo_set_source_rgb (cr,
3674                                       155 / (double)255,
3675                                       155 / (double)255,
3676                                       155 / (double)255);
3677                 pango_cairo_show_layout (cr, layout);
3678                 cairo_destroy (cr);
3679
3680                 pango_font_description_free (font_desc);
3681                 g_object_unref (layout);
3682
3683                 ev_document_fc_mutex_unlock ();
3684         }
3685
3686         width = (page_area->width - cairo_image_surface_get_width (view->loading_text)) / 2;
3687         height = (page_area->height - cairo_image_surface_get_height (view->loading_text)) / 2;
3688
3689         cr = gdk_cairo_create (view->layout.bin_window);
3690         cairo_translate (cr,
3691                          page_area->x + width,
3692                          page_area->y + height);
3693         cairo_set_source_surface (cr, view->loading_text, 0, 0);
3694         cairo_paint (cr);
3695         cairo_destroy (cr);
3696 }
3697
3698 static void
3699 draw_one_page (EvView       *view,
3700                gint          page,
3701                cairo_t      *cr,
3702                GdkRectangle *page_area,
3703                GtkBorder    *border,
3704                GdkRectangle *expose_area,
3705                gboolean     *page_ready)
3706 {
3707         GdkRectangle overlap;
3708         GdkRectangle real_page_area;
3709
3710         g_assert (view->document);
3711
3712         if (! gdk_rectangle_intersect (page_area, expose_area, &overlap))
3713                 return;
3714
3715         /* Render the document itself */
3716         real_page_area = *page_area;
3717
3718         real_page_area.x += border->left;
3719         real_page_area.y += border->top;
3720         real_page_area.width -= (border->left + border->right);
3721         real_page_area.height -= (border->top + border->bottom);
3722         *page_ready = TRUE;
3723
3724         if (!view->presentation) {
3725                 gint current_page;
3726
3727                 current_page = ev_page_cache_get_current_page (view->page_cache);
3728                 ev_document_misc_paint_one_page (view->layout.bin_window,
3729                                                  GTK_WIDGET (view),
3730                                                  page_area, border,
3731                                                  page == current_page);
3732         }
3733
3734         if (gdk_rectangle_intersect (&real_page_area, expose_area, &overlap)) {
3735                 gint             width, height;
3736                 gint             page_width, page_height;
3737                 cairo_surface_t *page_surface = NULL;
3738                 gint             selection_width, selection_height;
3739                 cairo_surface_t *selection_surface = NULL;
3740
3741                 page_surface = ev_pixbuf_cache_get_surface (view->pixbuf_cache, page);
3742
3743                 if (!page_surface) {
3744                         if (!view->presentation) {
3745                                 draw_loading_text (view,
3746                                                    &real_page_area,
3747                                                    expose_area);
3748                         }
3749
3750                         *page_ready = FALSE;
3751
3752                         return;
3753                 }
3754
3755                 ev_page_cache_get_size (view->page_cache,
3756                                         page, view->rotation,
3757                                         view->scale,
3758                                         &width, &height);
3759
3760                 page_width = cairo_image_surface_get_width (page_surface);
3761                 page_height = cairo_image_surface_get_height (page_surface);
3762
3763                 cairo_save (cr);
3764                 cairo_translate (cr, overlap.x, overlap.y);
3765
3766                 if (width != page_width || height != page_height) {
3767                         cairo_pattern_set_filter (cairo_get_source (cr),
3768                                                   CAIRO_FILTER_FAST);
3769                         cairo_scale (cr,
3770                                      (gdouble)width / page_width,
3771                                      (gdouble)height / page_height);
3772                 }
3773
3774                 cairo_surface_set_device_offset (page_surface,
3775                                                  overlap.x - real_page_area.x,
3776                                                  overlap.y - real_page_area.y);
3777                 cairo_set_source_surface (cr, page_surface, 0, 0);
3778                 cairo_paint (cr);
3779                 cairo_restore (cr);
3780
3781                 /* Get the selection pixbuf iff we have something to draw */
3782                 if (find_selection_for_page (view, page) &&
3783                     view->selection_mode == EV_VIEW_SELECTION_TEXT) {
3784                         selection_surface =
3785                                 ev_pixbuf_cache_get_selection_surface (view->pixbuf_cache,
3786                                                                        page,
3787                                                                        view->scale,
3788                                                                        NULL);
3789                 }
3790
3791                 if (!selection_surface) {
3792                         return;
3793                 }
3794
3795                 selection_width = cairo_image_surface_get_width (selection_surface);
3796                 selection_height = cairo_image_surface_get_height (selection_surface);
3797
3798                 cairo_save (cr);
3799                 cairo_translate (cr, overlap.x, overlap.y);
3800
3801                 if (width != selection_width || height != selection_height) {
3802                         cairo_pattern_set_filter (cairo_get_source (cr),
3803                                                   CAIRO_FILTER_FAST);
3804                         cairo_scale (cr,
3805                                      (gdouble)width / selection_width,
3806                                      (gdouble)height / selection_height);
3807                 }
3808
3809                 cairo_surface_set_device_offset (selection_surface,
3810                                                  overlap.x - real_page_area.x,
3811                                                  overlap.y - real_page_area.y);
3812                 cairo_set_source_surface (cr, selection_surface, 0, 0);
3813                 cairo_paint (cr);
3814                 cairo_restore (cr);
3815         }
3816 }
3817
3818 /*** GObject functions ***/
3819
3820 static void
3821 ev_view_finalize (GObject *object)
3822 {
3823         EvView *view = EV_VIEW (object);
3824
3825         g_free (view->find_status);
3826
3827         clear_selection (view);
3828         clear_link_selected (view);
3829
3830         if (view->image_dnd_info.image)
3831                 g_object_unref (view->image_dnd_info.image);
3832         view->image_dnd_info.image = NULL;
3833
3834         G_OBJECT_CLASS (ev_view_parent_class)->finalize (object);
3835 }
3836
3837 static void
3838 ev_view_destroy (GtkObject *object)
3839 {
3840         EvView *view = EV_VIEW (object);
3841
3842         if (view->document) {
3843                 g_object_unref (view->document);
3844                 view->document = NULL;
3845         }
3846
3847         if (view->pixbuf_cache) {
3848                 g_object_unref (view->pixbuf_cache);
3849                 view->pixbuf_cache = NULL;
3850         }
3851
3852 #if !GTK_CHECK_VERSION (2, 11, 7)
3853         if (view->link_tooltip) {
3854                 gtk_widget_destroy (view->link_tooltip);
3855                 view->link_tooltip = NULL;
3856         }
3857 #endif
3858         if (view->goto_window) {
3859                 gtk_widget_destroy (view->goto_window);
3860                 view->goto_window = NULL;
3861                 view->goto_entry = NULL;
3862         }
3863
3864         if (view->selection_scroll_id) {
3865             g_source_remove (view->selection_scroll_id);
3866             view->selection_scroll_id = 0;
3867         }
3868
3869         if (view->selection_update_id) {
3870             g_source_remove (view->selection_update_id);
3871             view->selection_update_id = 0;
3872         }
3873
3874         if (view->loading_text) {
3875                 cairo_surface_destroy (view->loading_text);
3876                 view->loading_text = NULL;
3877         }
3878
3879         if (view->scroll_info.timeout_id) {
3880             g_source_remove (view->scroll_info.timeout_id);
3881             view->scroll_info.timeout_id = 0;
3882         }
3883
3884         if (view->drag_info.drag_timeout_id) {
3885                 g_source_remove (view->drag_info.drag_timeout_id);
3886                 view->drag_info.drag_timeout_id = 0;
3887         }
3888
3889         if (view->drag_info.release_timeout_id) {
3890                 g_source_remove (view->drag_info.release_timeout_id);
3891                 view->drag_info.release_timeout_id = 0;
3892         }
3893
3894         ev_view_presentation_transition_stop (view);
3895
3896         ev_view_set_scroll_adjustments (GTK_LAYOUT (view), NULL, NULL);
3897
3898         GTK_OBJECT_CLASS (ev_view_parent_class)->destroy (object);
3899 }
3900
3901 static void
3902 ev_view_set_property (GObject      *object,
3903                       guint         prop_id,
3904                       const GValue *value,
3905                       GParamSpec   *pspec)
3906 {
3907         EvView *view = EV_VIEW (object);
3908
3909         switch (prop_id) {
3910                 case PROP_CONTINUOUS:
3911                         ev_view_set_continuous (view, g_value_get_boolean (value));
3912                         break;
3913                 case PROP_DUAL_PAGE:
3914                         ev_view_set_dual_page (view, g_value_get_boolean (value));
3915                         break;
3916                 case PROP_FULLSCREEN:
3917                         ev_view_set_fullscreen (view, g_value_get_boolean (value));
3918                         break;
3919                 case PROP_PRESENTATION:
3920                         ev_view_set_presentation (view, g_value_get_boolean (value));
3921                         break;
3922                 case PROP_SIZING_MODE:
3923                         ev_view_set_sizing_mode (view, g_value_get_enum (value));
3924                         break;
3925                 case PROP_ZOOM:
3926                         ev_view_set_zoom (view, g_value_get_double (value), FALSE);
3927                         break;
3928                 case PROP_ROTATION:
3929                         ev_view_set_rotation (view, g_value_get_int (value));
3930                         break;
3931                 default:
3932                         G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
3933         }
3934 }
3935
3936 static AtkObject *
3937 ev_view_get_accessible (GtkWidget *widget)
3938 {
3939         static gboolean first_time = TRUE;
3940
3941         if (first_time) {
3942                 AtkObjectFactory *factory;
3943                 AtkRegistry *registry;
3944                 GType derived_type;
3945                 GType derived_atk_type;
3946
3947                 /*
3948                  * Figure out whether accessibility is enabled by looking at the
3949                  * type of the accessible object which would be created for
3950                  * the parent type of EvView.
3951                  */
3952                 derived_type = g_type_parent (EV_TYPE_VIEW);
3953
3954                 registry = atk_get_default_registry ();
3955                 factory = atk_registry_get_factory (registry,
3956                                                     derived_type);
3957                 derived_atk_type = atk_object_factory_get_accessible_type (factory);
3958                 if (g_type_is_a (derived_atk_type, GTK_TYPE_ACCESSIBLE))
3959                         atk_registry_set_factory_type (registry,
3960                                                        EV_TYPE_VIEW,
3961                                                        ev_view_accessible_factory_get_type ());
3962                 first_time = FALSE;
3963         }
3964         return GTK_WIDGET_CLASS (ev_view_parent_class)->get_accessible (widget);
3965 }
3966
3967 static void
3968 ev_view_get_property (GObject *object,
3969                       guint prop_id,
3970                       GValue *value,
3971                       GParamSpec *pspec)
3972 {
3973         EvView *view = EV_VIEW (object);
3974
3975         switch (prop_id) {
3976                 case PROP_FIND_STATUS:
3977                         g_value_set_string (value, view->find_status);
3978                         break;
3979                 case PROP_CONTINUOUS:
3980                         g_value_set_boolean (value, view->continuous);
3981                         break;
3982                 case PROP_DUAL_PAGE:
3983                         g_value_set_boolean (value, view->dual_page);
3984                         break;
3985                 case PROP_FULLSCREEN:
3986                         g_value_set_boolean (value, view->fullscreen);
3987                         break;
3988                 case PROP_PRESENTATION:
3989                         g_value_set_boolean (value, view->presentation);
3990                         break;
3991                 case PROP_SIZING_MODE:
3992                         g_value_set_enum (value, view->sizing_mode);
3993                         break;
3994                 case PROP_ZOOM:
3995                         g_value_set_double (value, view->scale);
3996                         break;
3997                 case PROP_ROTATION:
3998                         g_value_set_int (value, view->rotation);
3999                         break;
4000                 case PROP_HAS_SELECTION:
4001                         g_value_set_boolean (value,
4002                                              view->selection_info.selections != NULL);
4003                         break;
4004                 default:
4005                         G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
4006         }
4007 }
4008
4009 static void
4010 ev_view_class_init (EvViewClass *class)
4011 {
4012         GObjectClass *object_class = G_OBJECT_CLASS (class);
4013         GtkObjectClass *gtk_object_class = GTK_OBJECT_CLASS (class);
4014         GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
4015         GtkLayoutClass *layout_class = GTK_LAYOUT_CLASS (class);
4016         GtkBindingSet *binding_set;
4017
4018         object_class->finalize = ev_view_finalize;
4019         object_class->set_property = ev_view_set_property;
4020         object_class->get_property = ev_view_get_property;
4021
4022         widget_class->expose_event = ev_view_expose_event;
4023         widget_class->button_press_event = ev_view_button_press_event;
4024         widget_class->motion_notify_event = ev_view_motion_notify_event;
4025         widget_class->button_release_event = ev_view_button_release_event;
4026         widget_class->key_press_event = ev_view_key_press_event;
4027         widget_class->focus_in_event = ev_view_focus_in;
4028         widget_class->focus_out_event = ev_view_focus_out;
4029         widget_class->get_accessible = ev_view_get_accessible;
4030         widget_class->size_request = ev_view_size_request;
4031         widget_class->size_allocate = ev_view_size_allocate;
4032         widget_class->realize = ev_view_realize;
4033         widget_class->scroll_event = ev_view_scroll_event;
4034         widget_class->enter_notify_event = ev_view_enter_notify_event;
4035         widget_class->leave_notify_event = ev_view_leave_notify_event;
4036         widget_class->style_set = ev_view_style_set;
4037         widget_class->drag_data_get = ev_view_drag_data_get;
4038         widget_class->drag_motion = ev_view_drag_motion;
4039         widget_class->drag_data_received = ev_view_drag_data_received;
4040         widget_class->popup_menu = ev_view_popup_menu;
4041 #if GTK_CHECK_VERSION (2, 11, 7)
4042         widget_class->query_tooltip = ev_view_query_tooltip;
4043 #endif
4044
4045         gtk_object_class->destroy = ev_view_destroy;
4046
4047         layout_class->set_scroll_adjustments = ev_view_set_scroll_adjustments;
4048
4049         class->binding_activated = ev_view_scroll;
4050
4051         signals[SIGNAL_BINDING_ACTIVATED] = g_signal_new ("binding_activated",
4052                          G_TYPE_FROM_CLASS (object_class),
4053                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
4054                          G_STRUCT_OFFSET (EvViewClass, binding_activated),
4055                          NULL, NULL,
4056                          ev_marshal_VOID__ENUM_BOOLEAN,
4057                          G_TYPE_NONE, 2,
4058                          GTK_TYPE_SCROLL_TYPE,
4059                          G_TYPE_BOOLEAN);
4060
4061         signals[SIGNAL_ZOOM_INVALID] = g_signal_new ("zoom-invalid",
4062                          G_TYPE_FROM_CLASS (object_class),
4063                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
4064                          G_STRUCT_OFFSET (EvViewClass, zoom_invalid),
4065                          NULL, NULL,
4066                          ev_marshal_VOID__VOID,
4067                          G_TYPE_NONE, 0, G_TYPE_NONE);
4068         signals[SIGNAL_HANDLE_LINK] = g_signal_new ("handle-link",
4069                          G_TYPE_FROM_CLASS (object_class),
4070                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
4071                          G_STRUCT_OFFSET (EvViewClass, handle_link),
4072                          NULL, NULL,
4073                          g_cclosure_marshal_VOID__OBJECT,
4074                          G_TYPE_NONE, 1,
4075                          G_TYPE_OBJECT);
4076         signals[SIGNAL_EXTERNAL_LINK] = g_signal_new ("external-link",
4077                          G_TYPE_FROM_CLASS (object_class),
4078                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
4079                          G_STRUCT_OFFSET (EvViewClass, external_link),
4080                          NULL, NULL,
4081                          g_cclosure_marshal_VOID__OBJECT,
4082                          G_TYPE_NONE, 1,
4083                          G_TYPE_OBJECT);
4084         signals[SIGNAL_POPUP_MENU] = g_signal_new ("popup",
4085                          G_TYPE_FROM_CLASS (object_class),
4086                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
4087                          G_STRUCT_OFFSET (EvViewClass, popup_menu),
4088                          NULL, NULL,
4089                          g_cclosure_marshal_VOID__OBJECT,
4090                          G_TYPE_NONE, 1,
4091                          G_TYPE_OBJECT);
4092
4093
4094         g_object_class_install_property (object_class,
4095                                          PROP_FIND_STATUS,
4096                                          g_param_spec_string ("find-status",
4097                                                               "Find Status Message",
4098                                                               "The find status message",
4099                                                               NULL,
4100                                                               G_PARAM_READABLE));
4101
4102         g_object_class_install_property (object_class,
4103                                          PROP_CONTINUOUS,
4104                                          g_param_spec_boolean ("continuous",
4105                                                                "Continuous",
4106                                                                "Continuous scrolling mode",
4107                                                                TRUE,
4108                                                                G_PARAM_READWRITE));
4109
4110         g_object_class_install_property (object_class,
4111                                          PROP_DUAL_PAGE,
4112                                          g_param_spec_boolean ("dual-page",
4113                                                                "Dual Page",
4114                                                                "Two pages visible at once",
4115                                                                FALSE,
4116                                                                G_PARAM_READWRITE));
4117         g_object_class_install_property (object_class,
4118                                          PROP_FULLSCREEN,
4119                                          g_param_spec_boolean ("fullscreen",
4120                                                                "Full Screen",
4121                                                                "Draw page in a fullscreen fashion",
4122                                                                FALSE,
4123                                                                G_PARAM_READWRITE));
4124         g_object_class_install_property (object_class,
4125                                          PROP_PRESENTATION,
4126                                          g_param_spec_boolean ("presentation",
4127                                                                "Presentation",
4128                                                                "Draw page in presentation mode",
4129                                                                TRUE,
4130                                                                G_PARAM_READWRITE));
4131
4132         g_object_class_install_property (object_class,
4133                                          PROP_SIZING_MODE,
4134                                          g_param_spec_enum ("sizing-mode",
4135                                                             "Sizing Mode",
4136                                                             "Sizing Mode",
4137                                                             EV_TYPE_SIZING_MODE,
4138                                                             EV_SIZING_FIT_WIDTH,
4139                                                             G_PARAM_READWRITE));
4140
4141         g_object_class_install_property (object_class,
4142                                          PROP_ZOOM,
4143                                          g_param_spec_double ("zoom",
4144                                                               "Zoom factor",
4145                                                               "Zoom factor",
4146                                                               0,
4147                                                               G_MAXDOUBLE,
4148                                                               1.0,
4149                                                               G_PARAM_READWRITE));
4150         g_object_class_install_property (object_class,
4151                                          PROP_ROTATION,
4152                                          g_param_spec_double ("rotation",
4153                                                               "Rotation",
4154                                                               "Rotation",
4155                                                               0,
4156                                                               360,
4157                                                               0,
4158                                                               G_PARAM_READWRITE));
4159         g_object_class_install_property (object_class,
4160                                          PROP_HAS_SELECTION,
4161                                          g_param_spec_boolean ("has-selection",
4162                                                                "Has selection",
4163                                                                "The view has selections",
4164                                                                FALSE,
4165                                                                G_PARAM_READABLE));
4166
4167         binding_set = gtk_binding_set_by_class (class);
4168
4169         add_scroll_binding_keypad (binding_set, GDK_Left,  0, EV_SCROLL_STEP_BACKWARD, TRUE);
4170         add_scroll_binding_keypad (binding_set, GDK_Right, 0, EV_SCROLL_STEP_FORWARD,  TRUE);
4171         add_scroll_binding_keypad (binding_set, GDK_Left,  GDK_MOD1_MASK, EV_SCROLL_STEP_DOWN, TRUE);
4172         add_scroll_binding_keypad (binding_set, GDK_Right, GDK_MOD1_MASK, EV_SCROLL_STEP_UP,  TRUE);
4173         add_scroll_binding_keypad (binding_set, GDK_Up,    0, EV_SCROLL_STEP_BACKWARD, FALSE);
4174         add_scroll_binding_keypad (binding_set, GDK_Down,  0, EV_SCROLL_STEP_FORWARD,  FALSE);
4175         add_scroll_binding_keypad (binding_set, GDK_Up,    GDK_MOD1_MASK, EV_SCROLL_STEP_DOWN, FALSE);
4176         add_scroll_binding_keypad (binding_set, GDK_Down,  GDK_MOD1_MASK, EV_SCROLL_STEP_UP,  FALSE);
4177         gtk_binding_entry_add_signal (binding_set, GDK_H, 0, "binding_activated", 2, EV_TYPE_SCROLL_TYPE,
4178                                       EV_SCROLL_STEP_BACKWARD, G_TYPE_BOOLEAN, TRUE);
4179         gtk_binding_entry_add_signal (binding_set, GDK_J, 0, "binding_activated", 2, EV_TYPE_SCROLL_TYPE,
4180                                       EV_SCROLL_STEP_FORWARD, G_TYPE_BOOLEAN, FALSE);
4181         gtk_binding_entry_add_signal (binding_set, GDK_K, 0, "binding_activated", 2, EV_TYPE_SCROLL_TYPE,
4182                                       EV_SCROLL_STEP_BACKWARD, G_TYPE_BOOLEAN, FALSE);
4183         gtk_binding_entry_add_signal (binding_set, GDK_L, 0, "binding_activated", 2, EV_TYPE_SCROLL_TYPE,
4184                                       EV_SCROLL_STEP_FORWARD, G_TYPE_BOOLEAN, TRUE);
4185
4186 }
4187
4188 static void
4189 ev_view_init (EvView *view)
4190 {
4191         GTK_WIDGET_SET_FLAGS (view, GTK_CAN_FOCUS);
4192
4193         view->spacing = 5;
4194         view->scale = 1.0;
4195         view->current_page = 0;
4196         view->pressed_button = -1;
4197         view->cursor = EV_VIEW_CURSOR_NORMAL;
4198         view->drag_info.in_drag = FALSE;
4199         view->scroll_info.autoscrolling = FALSE;
4200         view->selection_info.selections = NULL;
4201         view->selection_info.in_selection = FALSE;
4202         view->selection_info.in_drag = FALSE;
4203         view->selection_mode = EV_VIEW_SELECTION_TEXT;
4204         view->continuous = TRUE;
4205         view->dual_page = FALSE;
4206         view->presentation = FALSE;
4207         view->presentation_state = EV_PRESENTATION_NORMAL;
4208         view->fullscreen = FALSE;
4209         view->sizing_mode = EV_SIZING_FIT_WIDTH;
4210         view->pending_scroll = SCROLL_TO_KEEP_POSITION;
4211         view->jump_to_find_result = TRUE;
4212         view->highlight_find_results = FALSE;
4213
4214         gtk_layout_set_hadjustment (GTK_LAYOUT (view), NULL);
4215         gtk_layout_set_vadjustment (GTK_LAYOUT (view), NULL);
4216
4217         gtk_drag_dest_set (GTK_WIDGET (view),
4218                            GTK_DEST_DEFAULT_ALL,
4219                            view_drop_targets,
4220                            G_N_ELEMENTS (view_drop_targets),
4221                            GDK_ACTION_COPY);
4222 }
4223
4224 /*** Callbacks ***/
4225
4226 static void
4227 find_changed_cb (EvDocument *document, int page, EvView *view)
4228 {
4229         double percent;
4230         int n_pages;
4231
4232         percent = ev_document_find_get_progress
4233                         (EV_DOCUMENT_FIND (view->document));
4234         n_pages = ev_page_cache_get_n_pages (view->page_cache);
4235
4236         if (view->jump_to_find_result == TRUE) {
4237                 jump_to_find_page (view, EV_VIEW_FIND_NEXT, 0);
4238                 jump_to_find_result (view);
4239         }
4240         update_find_status_message (view, percent * n_pages >= n_pages - 1 );
4241         if (view->current_page == page)
4242                 gtk_widget_queue_draw (GTK_WIDGET (view));
4243 }
4244
4245 static void
4246 ev_view_change_page (EvView *view,
4247                      gint    new_page)
4248 {
4249         gint x, y;
4250
4251         view->current_page = new_page;
4252         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
4253
4254         if (view->presentation)
4255                 ev_view_presentation_transition_start (view);
4256
4257         gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
4258         ev_view_handle_cursor_over_xy (view, x, y);
4259
4260         gtk_widget_queue_resize (GTK_WIDGET (view));
4261 }
4262
4263 static void
4264 ev_view_transition_animation_finish (EvTransitionAnimation *animation,
4265                                      EvView                *view)
4266 {
4267         g_object_unref (view->animation);
4268         view->animation = NULL;
4269         ev_view_change_page (view, view->current_page);
4270 }
4271
4272 static void
4273 ev_view_transition_animation_frame (EvTransitionAnimation *animation,
4274                                     gdouble                progress,
4275                                     EvView                *view)
4276 {
4277         gtk_widget_queue_draw (GTK_WIDGET (view));
4278 }
4279
4280 static void
4281 ev_view_presentation_animation_start (EvView *view,
4282                                       int     new_page)
4283 {
4284         EvTransitionEffect *effect = NULL;
4285         cairo_surface_t *surface;
4286
4287         if (EV_IS_DOCUMENT_TRANSITION (view->document))
4288                 effect = ev_document_transition_get_effect (EV_DOCUMENT_TRANSITION (view->document),
4289                                                             view->current_page);
4290         if (!effect)
4291                 return;
4292
4293         surface = ev_pixbuf_cache_get_surface (view->pixbuf_cache, view->current_page);
4294         view->animation = ev_transition_animation_new (effect);
4295         ev_transition_animation_set_origin_surface (view->animation, surface);
4296
4297         g_signal_connect (view->animation, "frame",
4298                           G_CALLBACK (ev_view_transition_animation_frame), view);
4299         g_signal_connect (view->animation, "finished",
4300                           G_CALLBACK (ev_view_transition_animation_finish), view);
4301 }
4302
4303 static void
4304 job_finished_cb (EvPixbufCache *pixbuf_cache,
4305                  GdkRegion     *region,
4306                  EvView        *view)
4307 {
4308         if (view->animation) {
4309                 cairo_surface_t *surface;
4310
4311                 surface = ev_pixbuf_cache_get_surface (pixbuf_cache, view->current_page);
4312                 ev_transition_animation_set_dest_surface (view->animation, surface);
4313         }
4314
4315         if (region) {
4316                 gdk_window_invalidate_region (view->layout.bin_window,
4317                                               region, TRUE);
4318         } else {
4319                 gtk_widget_queue_draw (GTK_WIDGET (view));
4320         }
4321 }
4322
4323 static void
4324 page_changed_cb (EvPageCache *page_cache,
4325                  int          new_page,
4326                  EvView      *view)
4327 {
4328         if (view->current_page != new_page) {
4329                 if (view->presentation)
4330                         ev_view_presentation_animation_start (view, new_page);
4331
4332                 ev_view_change_page (view, new_page);
4333         } else {
4334                 gtk_widget_queue_draw (GTK_WIDGET (view));
4335         }
4336
4337         if (EV_IS_DOCUMENT_FIND (view->document)) {
4338                 view->find_result = 0;
4339                 update_find_status_message (view, TRUE);
4340         }
4341 }
4342
4343 static void
4344 on_adjustment_value_changed (GtkAdjustment *adjustment,
4345                              EvView        *view)
4346 {
4347         int dx = 0, dy = 0;
4348         gint x, y;
4349         GList *children, *l;
4350
4351         if (! GTK_WIDGET_REALIZED (view))
4352                 return;
4353
4354         if (view->hadjustment) {
4355                 dx = view->scroll_x - (int) view->hadjustment->value;
4356                 view->scroll_x = (int) view->hadjustment->value;
4357         } else {
4358                 view->scroll_x = 0;
4359         }
4360
4361         if (view->vadjustment) {
4362                 dy = view->scroll_y - (int) view->vadjustment->value;
4363                 view->scroll_y = (int) view->vadjustment->value;
4364         } else {
4365                 view->scroll_y = 0;
4366         }
4367
4368         children = gtk_container_get_children (GTK_CONTAINER (view));
4369         for (l = children; l && l->data; l = g_list_next (l)) {
4370                 gint       child_x, child_y;
4371                 GtkWidget *child = (GtkWidget *)l->data;
4372
4373                 gtk_container_child_get (GTK_CONTAINER (view),
4374                                          child,
4375                                          "x", &child_x,
4376                                          "y", &child_y,
4377                                          NULL);
4378                 gtk_layout_move (GTK_LAYOUT (view), child, child_x + dx, child_y + dy);
4379         }
4380         g_list_free (children);
4381
4382         if (view->pending_resize)
4383                 gtk_widget_queue_draw (GTK_WIDGET (view));
4384         else
4385                 gdk_window_scroll (view->layout.bin_window, dx, dy);
4386
4387         gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
4388         ev_view_handle_cursor_over_xy (view, x, y);
4389
4390         if (view->document)
4391                 view_update_range_and_current_page (view);
4392 }
4393
4394 GtkWidget*
4395 ev_view_new (void)
4396 {
4397         GtkWidget *view;
4398
4399         view = g_object_new (EV_TYPE_VIEW, NULL);
4400
4401         return view;
4402 }
4403
4404 static void
4405 setup_caches (EvView *view)
4406 {
4407         view->page_cache = ev_page_cache_get (view->document);
4408         g_signal_connect (view->page_cache, "page-changed", G_CALLBACK (page_changed_cb), view);
4409         view->pixbuf_cache = ev_pixbuf_cache_new (GTK_WIDGET (view), view->document);
4410         g_signal_connect (view->pixbuf_cache, "job-finished", G_CALLBACK (job_finished_cb), view);
4411         page_changed_cb (view->page_cache,
4412                          ev_page_cache_get_current_page (view->page_cache),
4413                          view);
4414 }
4415
4416 static void
4417 clear_caches (EvView *view)
4418 {
4419         if (view->pixbuf_cache) {
4420                 g_object_unref (view->pixbuf_cache);
4421                 view->pixbuf_cache = NULL;
4422         }
4423
4424         if (view->page_cache) {
4425                 view->page_cache = NULL;
4426         }
4427 }
4428
4429 void
4430 ev_view_set_loading (EvView       *view,
4431                      gboolean      loading)
4432 {
4433         view->loading = loading;
4434         gtk_widget_queue_draw (GTK_WIDGET (view));
4435 }
4436
4437 static gboolean
4438 ev_view_autoscroll_cb (EvView *view)
4439 {
4440         gdouble speed, value;
4441
4442         /* If the user stops autoscrolling, autoscrolling will be
4443          * set to false but the timeout will continue; stop the timeout: */
4444         if (!view->scroll_info.autoscrolling) {
4445                 view->scroll_info.timeout_id = 0;
4446                 return FALSE;
4447         }
4448
4449         if (view->scroll_info.last_y > view->scroll_info.start_y &&
4450                 (view->scroll_info.last_y < view->scroll_info.start_y))
4451                 return TRUE;
4452
4453         /* Replace 100 with your speed of choice: The lower the faster.
4454          * Replace 3 with another speed of choice: The higher, the faster it accelerated
4455          *      based on the distance of the starting point from the mouse
4456          * (All also effected by the timeout interval of this callback) */
4457
4458         if (view->scroll_info.start_y > view->scroll_info.last_y)
4459                 speed = -pow ((((gdouble)view->scroll_info.start_y - view->scroll_info.last_y) / 100), 3);
4460         else
4461                 speed = pow ((((gdouble)view->scroll_info.last_y - view->scroll_info.start_y) / 100), 3);
4462
4463         value = gtk_adjustment_get_value (view->vadjustment);
4464         value = CLAMP (value + speed, 0, view->vadjustment->upper - view->vadjustment->page_size);
4465         gtk_adjustment_set_value (view->vadjustment, value);
4466
4467         return TRUE;
4468
4469 }
4470
4471 void
4472 ev_view_autoscroll_start (EvView *view)
4473 {
4474         gint x, y;
4475
4476         g_return_if_fail (EV_IS_VIEW (view));
4477
4478         if (view->scroll_info.autoscrolling)
4479                 return;
4480
4481         view->scroll_info.autoscrolling = TRUE;
4482         view->scroll_info.timeout_id =
4483                 g_timeout_add (20, (GSourceFunc)ev_view_autoscroll_cb,
4484                                view);
4485
4486         gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
4487         ev_view_handle_cursor_over_xy (view, x, y);
4488 }
4489
4490 void
4491 ev_view_autoscroll_stop (EvView *view)
4492 {
4493         gint x, y;
4494
4495         g_return_if_fail (EV_IS_VIEW (view));
4496
4497         if (!view->scroll_info.autoscrolling)
4498                 return;
4499
4500         view->scroll_info.autoscrolling = FALSE;
4501         if (view->scroll_info.timeout_id) {
4502                 g_source_remove (view->scroll_info.timeout_id);
4503                 view->scroll_info.timeout_id = 0;
4504         }
4505
4506         gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
4507         ev_view_handle_cursor_over_xy (view, x, y);
4508 }
4509
4510 void
4511 ev_view_set_document (EvView     *view,
4512                       EvDocument *document)
4513 {
4514         g_return_if_fail (EV_IS_VIEW (view));
4515
4516         view->loading = FALSE;
4517
4518         if (document != view->document) {
4519                 clear_caches (view);
4520
4521                 if (view->document) {
4522                         g_signal_handlers_disconnect_by_func (view->document,
4523                                                               find_changed_cb,
4524                                                               view);
4525                         g_object_unref (view->document);
4526                         view->page_cache = NULL;
4527
4528                 }
4529
4530                 view->document = document;
4531                 view->find_result = 0;
4532
4533                 if (view->document) {
4534                         g_object_ref (view->document);
4535                         if (EV_IS_DOCUMENT_FIND (view->document)) {
4536                                 g_signal_connect (view->document,
4537                                                   "find_changed",
4538                                                   G_CALLBACK (find_changed_cb),
4539                                                   view);
4540                         }
4541
4542                         setup_caches (view);
4543                 }
4544
4545                 gtk_widget_queue_resize (GTK_WIDGET (view));
4546         }
4547 }
4548
4549 /*** Zoom and sizing mode ***/
4550
4551 #define EPSILON 0.0000001
4552 void
4553 ev_view_set_zoom (EvView   *view,
4554                   double    factor,
4555                   gboolean  relative)
4556 {
4557         double scale;
4558
4559         if (relative)
4560                 scale = view->scale * factor;
4561         else
4562                 scale = factor;
4563
4564         scale = CLAMP (scale,
4565                        view->sizing_mode == EV_SIZING_FREE ? view->min_scale : 0,
4566                        view->max_scale);
4567
4568         if (ABS (view->scale - scale) < EPSILON)
4569                 return;
4570
4571         if (view->loading_text) {
4572                 cairo_surface_destroy (view->loading_text);
4573                 view->loading_text = NULL;
4574         }
4575
4576         view->scale = scale;
4577         view->pending_resize = TRUE;
4578
4579         gtk_widget_queue_resize (GTK_WIDGET (view));
4580
4581         g_object_notify (G_OBJECT (view), "zoom");
4582 }
4583
4584 double
4585 ev_view_get_zoom (EvView *view)
4586 {
4587         return view->scale;
4588 }
4589
4590 void
4591 ev_view_set_screen_dpi (EvView  *view,
4592                         gdouble  dpi)
4593 {
4594         g_return_if_fail (EV_IS_VIEW (view));
4595         g_return_if_fail (dpi > 0);
4596
4597         view->dpi = dpi;
4598         view->min_scale = MIN_SCALE * dpi / 72.0;
4599         view->max_scale = MAX_SCALE * dpi / 72.0;
4600 }
4601
4602 gboolean
4603 ev_view_get_continuous (EvView *view)
4604 {
4605         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
4606
4607         return view->continuous;
4608 }
4609
4610 void
4611 ev_view_set_continuous (EvView   *view,
4612                         gboolean  continuous)
4613 {
4614         g_return_if_fail (EV_IS_VIEW (view));
4615
4616         continuous = continuous != FALSE;
4617
4618         if (view->continuous != continuous) {
4619                 view->continuous = continuous;
4620                 view->pending_scroll = SCROLL_TO_PAGE_POSITION;
4621                 gtk_widget_queue_resize (GTK_WIDGET (view));
4622         }
4623
4624         g_object_notify (G_OBJECT (view), "continuous");
4625 }
4626
4627 gboolean
4628 ev_view_get_dual_page (EvView *view)
4629 {
4630         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
4631
4632         return view->dual_page;
4633 }
4634
4635 void
4636 ev_view_set_dual_page (EvView   *view,
4637                        gboolean  dual_page)
4638 {
4639         g_return_if_fail (EV_IS_VIEW (view));
4640
4641         dual_page = dual_page != FALSE;
4642
4643         if (view->dual_page == dual_page)
4644                 return;
4645
4646         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
4647         view->dual_page = dual_page;
4648         /* FIXME: if we're keeping the pixbuf cache around, we should extend the
4649          * preload_cache_size to be 2 if dual_page is set.
4650          */
4651         gtk_widget_queue_resize (GTK_WIDGET (view));
4652
4653         g_object_notify (G_OBJECT (view), "dual-page");
4654 }
4655
4656 void
4657 ev_view_set_fullscreen (EvView   *view,
4658                          gboolean  fullscreen)
4659 {
4660         g_return_if_fail (EV_IS_VIEW (view));
4661
4662         fullscreen = fullscreen != FALSE;
4663
4664         if (view->fullscreen == fullscreen)
4665                 return;
4666
4667         view->fullscreen = fullscreen;
4668         gtk_widget_queue_resize (GTK_WIDGET (view));
4669
4670         g_object_notify (G_OBJECT (view), "fullscreen");
4671 }
4672
4673 gboolean
4674 ev_view_get_fullscreen (EvView *view)
4675 {
4676         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
4677
4678         return view->fullscreen;
4679 }
4680
4681 void
4682 ev_view_set_presentation (EvView   *view,
4683                           gboolean  presentation)
4684 {
4685         g_return_if_fail (EV_IS_VIEW (view));
4686
4687         presentation = presentation != FALSE;
4688
4689         if (view->presentation == presentation)
4690                 return;
4691
4692         if (!presentation)
4693                 view->presentation_state = EV_PRESENTATION_NORMAL;
4694
4695         view->presentation = presentation;
4696         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
4697
4698         if (presentation) {
4699                 view->sizing_mode_saved = view->sizing_mode;
4700                 view->scale_saved = view->scale;
4701                 ev_view_set_sizing_mode (view, EV_SIZING_BEST_FIT);
4702         } else {
4703                 ev_view_set_sizing_mode (view, view->sizing_mode_saved);
4704                 ev_view_set_zoom (view, view->scale_saved, FALSE);
4705         }
4706
4707         gtk_widget_queue_resize (GTK_WIDGET (view));
4708
4709         if (presentation)
4710                 ev_view_presentation_transition_start (view);
4711         else {
4712                 ev_view_presentation_transition_stop (view);
4713
4714                 if (view->animation) {
4715                         /* stop any running animation */
4716                         ev_view_transition_animation_finish (view->animation, view);
4717                 }
4718         }
4719
4720         if (GTK_WIDGET_REALIZED (view)) {
4721                 if (view->presentation)
4722                         gdk_window_set_background (view->layout.bin_window,
4723                                                    &GTK_WIDGET (view)->style->black);
4724                 else
4725                         gdk_window_set_background (view->layout.bin_window,
4726                                                    &GTK_WIDGET (view)->style->mid [GTK_STATE_NORMAL]);
4727         }
4728
4729         g_object_notify (G_OBJECT (view), "presentation");
4730 }
4731
4732 gboolean
4733 ev_view_get_presentation (EvView *view)
4734 {
4735         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
4736
4737         return view->presentation;
4738 }
4739
4740 static gboolean
4741 transition_next_page (EvView *view)
4742 {
4743         ev_view_next_page (view);
4744
4745         return FALSE;
4746 }
4747
4748 static void
4749 ev_view_presentation_transition_stop (EvView *view)
4750 {
4751         if (view->trans_timeout_id > 0)
4752                 g_source_remove (view->trans_timeout_id);
4753         view->trans_timeout_id = 0;
4754 }
4755
4756 static void
4757 ev_view_presentation_transition_start (EvView *view)
4758 {
4759         gdouble duration;
4760
4761         if (!EV_IS_DOCUMENT_TRANSITION (view->document))
4762                 return;
4763
4764         ev_view_presentation_transition_stop (view);
4765
4766         duration = ev_document_transition_get_page_duration (EV_DOCUMENT_TRANSITION (view->document),
4767                                                              view->current_page);
4768         if (duration > 0) {
4769                 view->trans_timeout_id =
4770                         g_timeout_add_seconds (duration,
4771                                                (GSourceFunc) transition_next_page,
4772                                                view);
4773         }
4774 }
4775
4776 void
4777 ev_view_set_sizing_mode (EvView       *view,
4778                          EvSizingMode  sizing_mode)
4779 {
4780         g_return_if_fail (EV_IS_VIEW (view));
4781
4782         if (view->sizing_mode == sizing_mode)
4783                 return;
4784
4785         view->sizing_mode = sizing_mode;
4786         gtk_widget_queue_resize (GTK_WIDGET (view));
4787
4788         g_object_notify (G_OBJECT (view), "sizing-mode");
4789 }
4790
4791 EvSizingMode
4792 ev_view_get_sizing_mode (EvView *view)
4793 {
4794         g_return_val_if_fail (EV_IS_VIEW (view), EV_SIZING_FREE);
4795
4796         return view->sizing_mode;
4797 }
4798
4799 gboolean
4800 ev_view_can_zoom_in (EvView *view)
4801 {
4802         return view->scale * ZOOM_IN_FACTOR <= view->max_scale;
4803 }
4804
4805 gboolean
4806 ev_view_can_zoom_out (EvView *view)
4807 {
4808         return view->scale * ZOOM_OUT_FACTOR >= view->min_scale;
4809 }
4810
4811 void
4812 ev_view_zoom_in (EvView *view)
4813 {
4814         g_return_if_fail (view->sizing_mode == EV_SIZING_FREE);
4815
4816         if (view->presentation)
4817                 return;
4818
4819         view->pending_scroll = SCROLL_TO_CENTER;
4820         ev_view_set_zoom (view, ZOOM_IN_FACTOR, TRUE);
4821 }
4822
4823 void
4824 ev_view_zoom_out (EvView *view)
4825 {
4826         g_return_if_fail (view->sizing_mode == EV_SIZING_FREE);
4827
4828         if (view->presentation)
4829                 return;
4830
4831         view->pending_scroll = SCROLL_TO_CENTER;
4832         ev_view_set_zoom (view, ZOOM_OUT_FACTOR, TRUE);
4833 }
4834
4835 void
4836 ev_view_rotate_right (EvView *view)
4837 {
4838         int rotation = view->rotation + 90;
4839
4840         if (rotation >= 360) {
4841                 rotation -= 360;
4842         }
4843
4844         ev_view_set_rotation (view, rotation);
4845 }
4846
4847 void
4848 ev_view_rotate_left (EvView *view)
4849 {
4850         int rotation = view->rotation - 90;
4851
4852         if (rotation < 0) {
4853                 rotation += 360;
4854         }
4855
4856         ev_view_set_rotation (view, rotation);
4857 }
4858
4859 void
4860 ev_view_set_rotation (EvView *view, int rotation)
4861 {
4862         view->rotation = rotation;
4863
4864         if (view->pixbuf_cache) {
4865                 ev_pixbuf_cache_clear (view->pixbuf_cache);
4866                 gtk_widget_queue_resize (GTK_WIDGET (view));
4867         }
4868
4869         if (rotation != 0)
4870                 clear_selection (view);
4871
4872         g_object_notify (G_OBJECT (view), "rotation");
4873 }
4874
4875 int
4876 ev_view_get_rotation (EvView *view)
4877 {
4878         return view->rotation;
4879 }
4880
4881 static double
4882 zoom_for_size_fit_width (int doc_width,
4883                          int doc_height,
4884                          int target_width,
4885                          int target_height,
4886                          int vsb_width)
4887 {
4888         double scale;
4889
4890         scale = (double)target_width / doc_width;
4891
4892         if (doc_height * scale > target_height)
4893                 scale = (double) (target_width - vsb_width) / doc_width;
4894
4895         return scale;
4896 }
4897
4898 static double
4899 zoom_for_size_fit_height (int doc_width,
4900                           int doc_height,
4901                           int target_width,
4902                           int target_height,
4903                           int vsb_height)
4904 {
4905         double scale;
4906
4907         scale = (double)target_height / doc_height;
4908
4909         if (doc_width * scale > target_width)
4910                 scale = (double) (target_height - vsb_height) / doc_height;
4911
4912         return scale;
4913 }
4914
4915 static double
4916 zoom_for_size_best_fit (int doc_width,
4917                         int doc_height,
4918                         int target_width,
4919                         int target_height,
4920                         int vsb_width,
4921                         int hsb_width)
4922 {
4923         double w_scale;
4924         double h_scale;
4925
4926         w_scale = (double)target_width / doc_width;
4927         h_scale = (double)target_height / doc_height;
4928
4929         if (doc_height * w_scale > target_height)
4930                 w_scale = (double) (target_width - vsb_width) / doc_width;
4931         if (doc_width * h_scale > target_width)
4932                 h_scale = (double) (target_height - hsb_width) / doc_height;
4933
4934         return MIN (w_scale, h_scale);
4935 }
4936
4937
4938 static void
4939 ev_view_zoom_for_size_presentation (EvView *view,
4940                                     int     width,
4941                                     int     height)
4942 {
4943         int doc_width, doc_height;
4944         gdouble scale;
4945
4946         ev_page_cache_get_size (view->page_cache,
4947                                 view->current_page,
4948                                 view->rotation,
4949                                 1.0,
4950                                 &doc_width,
4951                                 &doc_height);
4952         scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, 0, 0);
4953         ev_view_set_zoom (view, scale, FALSE);
4954 }
4955
4956 static void
4957 ev_view_zoom_for_size_continuous_and_dual_page (EvView *view,
4958                            int     width,
4959                            int     height,
4960                            int     vsb_width,
4961                            int     hsb_height)
4962 {
4963         int doc_width, doc_height;
4964         GtkBorder border;
4965         gdouble scale;
4966
4967         ev_page_cache_get_max_width (view->page_cache,
4968                                      view->rotation,
4969                                      1.0,
4970                                      &doc_width);
4971         ev_page_cache_get_max_height (view->page_cache,
4972                                       view->rotation,
4973                                       1.0,
4974                                       &doc_height);
4975         compute_border (view, doc_width, doc_height, &border);
4976
4977         doc_width = doc_width * 2;
4978         width -= (2 * (border.left + border.right) + 3 * view->spacing);
4979         height -= (border.top + border.bottom + 2 * view->spacing - 1);
4980
4981         /* FIXME: We really need to calculate the overall height here, not the
4982          * page height.  We assume there's always a vertical scrollbar for
4983          * now.  We need to fix this. */
4984         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
4985                 scale = zoom_for_size_fit_width (doc_width, doc_height, width - vsb_width, height, 0);
4986         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
4987                 scale = zoom_for_size_best_fit (doc_width, doc_height, width - vsb_width, height, 0, hsb_height);
4988         else
4989                 g_assert_not_reached ();
4990
4991         ev_view_set_zoom (view, scale, FALSE);
4992 }
4993
4994 static void
4995 ev_view_zoom_for_size_continuous (EvView *view,
4996                                   int     width,
4997                                   int     height,
4998                                   int     vsb_width,
4999                                   int     hsb_height)
5000 {
5001         int doc_width, doc_height;
5002         GtkBorder border;
5003         gdouble scale;
5004
5005         ev_page_cache_get_max_width (view->page_cache,
5006                                      view->rotation,
5007                                      1.0,
5008                                      &doc_width);
5009         ev_page_cache_get_max_height (view->page_cache,
5010                                       view->rotation,
5011                                       1.0,
5012                                       &doc_height);
5013         compute_border (view, doc_width, doc_height, &border);
5014
5015         width -= (border.left + border.right + 2 * view->spacing);
5016         height -= (border.top + border.bottom + 2 * view->spacing - 1);
5017
5018         /* FIXME: We really need to calculate the overall height here, not the
5019          * page height.  We assume there's always a vertical scrollbar for
5020          * now.  We need to fix this. */
5021         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
5022                 scale = zoom_for_size_fit_width (doc_width, doc_height, width - vsb_width, height, 0);
5023         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
5024                 scale = zoom_for_size_best_fit (doc_width, doc_height, width - vsb_width, height, 0, hsb_height);
5025         else
5026                 g_assert_not_reached ();
5027
5028         ev_view_set_zoom (view, scale, FALSE);
5029 }
5030
5031 static void
5032 ev_view_zoom_for_size_dual_page (EvView *view,
5033                                  int     width,
5034                                  int     height,
5035                                  int     vsb_width,
5036                                  int     hsb_height)
5037 {
5038         GtkBorder border;
5039         gint doc_width, doc_height;
5040         gdouble scale;
5041         gint other_page;
5042
5043         other_page = view->current_page ^ 1;
5044
5045         /* Find the largest of the two. */
5046         ev_page_cache_get_size (view->page_cache,
5047                                 view->current_page,
5048                                 view->rotation,
5049                                 1.0,
5050                                 &doc_width, &doc_height);
5051
5052         if (other_page < ev_page_cache_get_n_pages (view->page_cache)) {
5053                 gint width_2, height_2;
5054                 ev_page_cache_get_size (view->page_cache,
5055                                         other_page,
5056                                         view->rotation,
5057                                         1.0,
5058                                         &width_2, &height_2);
5059                 if (width_2 > doc_width)
5060                         doc_width = width_2;
5061                 if (height_2 > doc_height)
5062                         doc_height = height_2;
5063         }
5064         compute_border (view, doc_width, doc_height, &border);
5065
5066         doc_width = doc_width * 2;
5067         width -= ((border.left + border.right)* 2 + 3 * view->spacing);
5068         height -= (border.top + border.bottom + 2 * view->spacing);
5069
5070         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
5071                 scale = zoom_for_size_fit_width (doc_width, doc_height, width, height, vsb_width);
5072         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
5073                 scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, vsb_width, hsb_height);
5074         else
5075                 g_assert_not_reached ();
5076
5077         ev_view_set_zoom (view, scale, FALSE);
5078 }
5079
5080 static void
5081 ev_view_zoom_for_size_single_page (EvView *view,
5082                                    int     width,
5083                                    int     height,
5084                                    int     vsb_width,
5085                                    int     hsb_height)
5086 {
5087         int doc_width, doc_height;
5088         GtkBorder border;
5089         gdouble scale;
5090
5091         ev_page_cache_get_size (view->page_cache,
5092                                 view->current_page,
5093                                 view->rotation,
5094                                 1.0,
5095                                 &doc_width,
5096                                 &doc_height);
5097         /* Get an approximate border */
5098         compute_border (view, width, height, &border);
5099
5100         width -= (border.left + border.right + 2 * view->spacing);
5101         height -= (border.top + border.bottom + 2 * view->spacing);
5102
5103         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
5104                 scale = zoom_for_size_fit_width (doc_width, doc_height, width, height, vsb_width);
5105         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
5106                 scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, vsb_width, hsb_height);
5107         else
5108                 g_assert_not_reached ();
5109
5110         ev_view_set_zoom (view, scale, FALSE);
5111 }
5112
5113 static void
5114 ev_view_set_zoom_for_size (EvView *view,
5115                            int     width,
5116                            int     height,
5117                            int     vsb_width,
5118                            int     hsb_height)
5119 {
5120         g_return_if_fail (EV_IS_VIEW (view));
5121         g_return_if_fail (view->sizing_mode == EV_SIZING_FIT_WIDTH ||
5122                           view->sizing_mode == EV_SIZING_BEST_FIT);
5123         g_return_if_fail (width >= 0);
5124         g_return_if_fail (height >= 0);
5125
5126         if (view->document == NULL)
5127                 return;
5128
5129         if (view->presentation)
5130                 ev_view_zoom_for_size_presentation (view, width, height);
5131         else if (view->continuous && view->dual_page)
5132                 ev_view_zoom_for_size_continuous_and_dual_page (view, width, height, vsb_width, hsb_height);
5133         else if (view->continuous)
5134                 ev_view_zoom_for_size_continuous (view, width, height, vsb_width, hsb_height);
5135         else if (view->dual_page)
5136                 ev_view_zoom_for_size_dual_page (view, width, height, vsb_width, hsb_height);
5137         else
5138                 ev_view_zoom_for_size_single_page (view, width, height, vsb_width, hsb_height);
5139 }
5140
5141 /*** Find ***/
5142 static void
5143 update_find_status_message (EvView *view, gboolean this_page)
5144 {
5145         char *message;
5146
5147         if (this_page) {
5148                 int results;
5149
5150                 results = ev_document_find_get_n_results
5151                                 (EV_DOCUMENT_FIND (view->document),
5152                                  view->current_page);
5153                 /* TRANS: Sometimes this could be better translated as
5154                    "%d hit(s) on this page".  Therefore this string
5155                    contains plural cases. */
5156                 message = g_strdup_printf (ngettext ("%d found on this page",
5157                                                      "%d found on this page",
5158                                                      results),
5159                                            results);
5160         } else {
5161                 double percent;
5162
5163                 percent = ev_document_find_get_progress
5164                                 (EV_DOCUMENT_FIND (view->document));
5165                 message = g_strdup_printf (_("%3d%% remaining to search"),
5166                                            (int) ((1.0 - percent) * 100));
5167
5168         }
5169         ev_view_set_find_status (view, message);
5170         g_free (message);
5171 }
5172
5173 const char *
5174 ev_view_get_find_status (EvView *view)
5175 {
5176         g_return_val_if_fail (EV_IS_VIEW (view), NULL);
5177
5178         return view->find_status;
5179 }
5180
5181 static void
5182 ev_view_set_find_status (EvView *view, const char *message)
5183 {
5184         g_return_if_fail (EV_IS_VIEW (view));
5185
5186         g_free (view->find_status);
5187         view->find_status = g_strdup (message);
5188         g_object_notify (G_OBJECT (view), "find-status");
5189 }
5190
5191 static void
5192 jump_to_find_result (EvView *view)
5193 {
5194         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
5195         EvRectangle rect;
5196         GdkRectangle view_rect;
5197         int n_results;
5198         int page = view->current_page;
5199
5200         n_results = ev_document_find_get_n_results (find, page);
5201
5202         if (n_results > 0  && view->find_result < n_results) {
5203                 ev_document_find_get_result
5204                         (find, page, view->find_result, &rect);
5205
5206                 doc_rect_to_view_rect (view, page, &rect, &view_rect);
5207                 ensure_rectangle_is_visible (view, &view_rect);
5208         }
5209 }
5210
5211 /**
5212  * jump_to_find_page
5213  * @view: #EvView instance
5214  * @direction: Direction to look
5215  * @shift: Shift from current page
5216  *
5217  * Jumps to the first page that has occurences of searched word.
5218  * Uses a direction where to look and a shift from current page.
5219  *
5220  */
5221 static void
5222 jump_to_find_page (EvView *view, EvViewFindDirection direction, gint shift)
5223 {
5224         int n_pages, i;
5225
5226         n_pages = ev_page_cache_get_n_pages (view->page_cache);
5227
5228         for (i = 0; i < n_pages; i++) {
5229                 int has_results;
5230                 int page;
5231
5232                 if (direction == EV_VIEW_FIND_NEXT)
5233                         page = view->current_page + i;
5234                 else
5235                         page = view->current_page - i;
5236                 page += shift;
5237
5238                 if (page >= n_pages) {
5239                         page = page - n_pages;
5240                 }
5241                 if (page < 0)
5242                         page = page + n_pages;
5243
5244                 has_results = ev_document_find_page_has_results
5245                                 (EV_DOCUMENT_FIND (view->document), page);
5246                 if (has_results == -1) {
5247                         break;
5248                 } else if (has_results == 1) {
5249                         ev_page_cache_set_current_page (view->page_cache, page);
5250                         break;
5251                 }
5252         }
5253 }
5254
5255 gboolean
5256 ev_view_can_find_next (EvView *view)
5257 {
5258         if (EV_IS_DOCUMENT_FIND (view->document)) {
5259                 EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
5260                 int i, n_pages;
5261
5262                 n_pages = ev_page_cache_get_n_pages (view->page_cache);
5263                 for (i = 0; i < n_pages; i++) {
5264                         if (ev_document_find_get_n_results (find, i) > 0) {
5265                                 return TRUE;
5266                         }
5267                 }
5268         }
5269
5270         return FALSE;
5271 }
5272
5273 void
5274 ev_view_find_next (EvView *view)
5275 {
5276         int n_results, n_pages;
5277         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
5278
5279         n_results = ev_document_find_get_n_results (find, view->current_page);
5280
5281         n_pages = ev_page_cache_get_n_pages (view->page_cache);
5282
5283         view->find_result++;
5284
5285         if (view->find_result >= n_results) {
5286
5287                 view->find_result = 0;
5288                 jump_to_find_page (view, EV_VIEW_FIND_NEXT, 1);
5289                 jump_to_find_result (view);
5290         } else {
5291                 jump_to_find_result (view);
5292                 gtk_widget_queue_draw (GTK_WIDGET (view));
5293         }
5294 }
5295
5296 gboolean
5297 ev_view_can_find_previous (EvView *view)
5298 {
5299         if (EV_IS_DOCUMENT_FIND (view->document)) {
5300                 EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
5301                 int i, n_pages;
5302
5303                 n_pages = ev_page_cache_get_n_pages (view->page_cache);
5304                 for (i = n_pages - 1; i >= 0; i--) {
5305                         if (ev_document_find_get_n_results (find, i) > 0) {
5306                                 return TRUE;
5307                         }
5308                 }
5309         }
5310
5311         return FALSE;
5312 }
5313 void
5314 ev_view_find_previous (EvView *view)
5315 {
5316         int n_results, n_pages;
5317         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
5318         EvPageCache *page_cache;
5319
5320         page_cache = ev_page_cache_get (view->document);
5321
5322         n_results = ev_document_find_get_n_results (find, view->current_page);
5323
5324         n_pages = ev_page_cache_get_n_pages (page_cache);
5325
5326         view->find_result--;
5327
5328         if (view->find_result < 0) {
5329
5330                 jump_to_find_page (view, EV_VIEW_FIND_PREV, -1);
5331                 view->find_result = ev_document_find_get_n_results (find, view->current_page) - 1;
5332                 jump_to_find_result (view);
5333         } else {
5334                 jump_to_find_result (view);
5335                 gtk_widget_queue_draw (GTK_WIDGET (view));
5336         }
5337 }
5338
5339 void
5340 ev_view_search_changed (EvView *view)
5341 {
5342         /* search string has changed, focus on new search result */
5343         view->jump_to_find_result = TRUE;
5344 }
5345
5346 void
5347 ev_view_set_highlight_search (EvView *view, gboolean value)
5348 {
5349         view->highlight_find_results = value;
5350         gtk_widget_queue_draw (GTK_WIDGET (view));
5351 }
5352
5353 void
5354 ev_view_find_cancel (EvView *view)
5355 {
5356         if (EV_IS_DOCUMENT_FIND (view->document)) {
5357                 EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
5358
5359                 ev_document_find_cancel (find);
5360         }
5361 }
5362
5363 /*** Selections ***/
5364
5365 /* compute_new_selection_rect/text calculates the area currently selected by
5366  * view_rect.  each handles a different mode;
5367  */
5368 static GList *
5369 compute_new_selection_rect (EvView       *view,
5370                             GdkPoint     *start,
5371                             GdkPoint     *stop)
5372 {
5373         GdkRectangle view_rect;
5374         int n_pages, i;
5375         GList *list = NULL;
5376
5377         g_assert (view->selection_mode == EV_VIEW_SELECTION_RECTANGLE);
5378
5379         view_rect.x = MIN (start->x, stop->x);
5380         view_rect.y = MIN (start->y, stop->y);
5381         view_rect.width = MAX (start->x, stop->x) - view_rect.x;
5382         view_rect.width = MAX (start->y, stop->y) - view_rect.y;
5383
5384         n_pages = ev_page_cache_get_n_pages (view->page_cache);
5385
5386         for (i = 0; i < n_pages; i++) {
5387                 GdkRectangle page_area;
5388                 GtkBorder border;
5389
5390                 if (get_page_extents (view, i, &page_area, &border)) {
5391                         GdkRectangle overlap;
5392
5393                         if (gdk_rectangle_intersect (&page_area, &view_rect, &overlap)) {
5394                                 EvViewSelection *selection;
5395
5396                                 selection = g_new0 (EvViewSelection, 1);
5397                                 selection->page = i;
5398                                 view_rect_to_doc_rect (view, &overlap, &page_area,
5399                                                        &(selection->rect));
5400
5401                                 list = g_list_append (list, selection);
5402                         }
5403                 }
5404         }
5405
5406         return list;
5407 }
5408
5409 static gboolean
5410 gdk_rectangle_point_in (GdkRectangle *rectangle,
5411                         GdkPoint     *point)
5412 {
5413         return rectangle->x <= point->x &&
5414                 rectangle->y <= point->y &&
5415                 point->x < rectangle->x + rectangle->width &&
5416                 point->y < rectangle->y + rectangle->height;
5417 }
5418
5419 static GList *
5420 compute_new_selection_text (EvView          *view,
5421                             EvSelectionStyle style,
5422                             GdkPoint        *start,
5423                             GdkPoint        *stop)
5424 {
5425         int n_pages, i, first, last;
5426         GList *list = NULL;
5427         EvViewSelection *selection;
5428         gint width, height;
5429         int start_page, end_page;
5430
5431         g_assert (view->selection_mode == EV_VIEW_SELECTION_TEXT);
5432
5433         n_pages = ev_page_cache_get_n_pages (view->page_cache);
5434
5435         /* First figure out the range of pages the selection
5436          * affects. */
5437         first = n_pages;
5438         last = 0;
5439         if (view->continuous) {
5440                 start_page = 0;
5441                 end_page = n_pages;
5442         } else if (view->dual_page) {
5443                 start_page = view->start_page;
5444                 end_page = view->end_page + 1;
5445         } else {
5446                 start_page = view->current_page;
5447                 end_page = view->current_page + 1;
5448         }
5449
5450         for (i = start_page; i < end_page; i++) {
5451                 GdkRectangle page_area;
5452                 GtkBorder border;
5453
5454                 get_page_extents (view, i, &page_area, &border);
5455                 if (gdk_rectangle_point_in (&page_area, start) ||
5456                     gdk_rectangle_point_in (&page_area, stop)) {
5457                         if (first == n_pages)
5458                                 first = i;
5459                         last = i;
5460                 }
5461
5462         }
5463
5464         /* Now create a list of EvViewSelection's for the affected
5465          * pages.  This could be an empty list, a list of just one
5466          * page or a number of pages.*/
5467         for (i = first; i < last + 1; i++) {
5468                 GdkRectangle page_area;
5469                 GtkBorder border;
5470                 GdkPoint *point;
5471
5472                 ev_page_cache_get_size (view->page_cache, i,
5473                                         view->rotation,
5474                                         1.0, &width, &height);
5475
5476                 selection = g_new0 (EvViewSelection, 1);
5477                 selection->page = i;
5478                 selection->style = style;
5479                 selection->rect.x1 = selection->rect.y1 = 0;
5480                 selection->rect.x2 = width;
5481                 selection->rect.y2 = height;
5482
5483                 get_page_extents (view, i, &page_area, &border);
5484
5485                 if (gdk_rectangle_point_in (&page_area, start))
5486                         point = start;
5487                 else
5488                         point = stop;
5489
5490                 if (i == first)
5491                         view_point_to_doc_point (view, point, &page_area,
5492                                                  &selection->rect.x1,
5493                                                  &selection->rect.y1);
5494
5495                 /* If the selection is contained within just one page,
5496                  * make sure we don't write 'start' into both points
5497                  * in selection->rect. */
5498                 if (first == last)
5499                         point = stop;
5500
5501                 if (i == last)
5502                         view_point_to_doc_point (view, point, &page_area,
5503                                                  &selection->rect.x2,
5504                                                  &selection->rect.y2);
5505
5506                 list = g_list_append (list, selection);
5507         }
5508
5509         return list;
5510 }
5511
5512 /* This function takes the newly calculated list, and figures out which regions
5513  * have changed.  It then queues a redraw approporiately.
5514  */
5515 static void
5516 merge_selection_region (EvView *view,
5517                         GList  *new_list)
5518 {
5519         GList *old_list;
5520         GList *new_list_ptr, *old_list_ptr;
5521
5522         /* Update the selection */
5523         old_list = ev_pixbuf_cache_get_selection_list (view->pixbuf_cache);
5524         g_list_foreach (view->selection_info.selections, (GFunc)selection_free, NULL);
5525         view->selection_info.selections = new_list;
5526         ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, new_list);
5527         g_object_notify (G_OBJECT (view), "has-selection");
5528
5529         new_list_ptr = new_list;
5530         old_list_ptr = old_list;
5531
5532         while (new_list_ptr || old_list_ptr) {
5533                 EvViewSelection *old_sel, *new_sel;
5534                 int cur_page;
5535                 GdkRegion *region = NULL;
5536
5537                 new_sel = (new_list_ptr) ? (new_list_ptr->data) : NULL;
5538                 old_sel = (old_list_ptr) ? (old_list_ptr->data) : NULL;
5539
5540                 /* Assume that the lists are in order, and we run through them
5541                  * comparing them, one page at a time.  We come out with the
5542                  * first page we see. */
5543                 if (new_sel && old_sel) {
5544                         if (new_sel->page < old_sel->page) {
5545                                 new_list_ptr = new_list_ptr->next;
5546                                 old_sel = NULL;
5547                         } else if (new_sel->page > old_sel->page) {
5548                                 old_list_ptr = old_list_ptr->next;
5549                                 new_sel = NULL;
5550                         } else {
5551                                 new_list_ptr = new_list_ptr->next;
5552                                 old_list_ptr = old_list_ptr->next;
5553                         }
5554                 } else if (new_sel) {
5555                         new_list_ptr = new_list_ptr->next;
5556                 } else if (old_sel) {
5557                         old_list_ptr = old_list_ptr->next;
5558                 }
5559
5560                 g_assert (new_sel || old_sel);
5561
5562                 /* is the page we're looking at on the screen?*/
5563                 cur_page = new_sel ? new_sel->page : old_sel->page;
5564                 if (cur_page < view->start_page || cur_page > view->end_page)
5565                         continue;
5566
5567                 /* seed the cache with a new page.  We are going to need the new
5568                  * region too. */
5569                 if (new_sel) {
5570                         GdkRegion *tmp_region = NULL;
5571
5572                         ev_pixbuf_cache_get_selection_surface (view->pixbuf_cache,
5573                                                                cur_page,
5574                                                                view->scale,
5575                                                                &tmp_region);
5576
5577                         if (tmp_region) {
5578                                 new_sel->covered_region = gdk_region_copy (tmp_region);
5579                         }
5580                 }
5581
5582                 /* Now we figure out what needs redrawing */
5583                 if (old_sel && new_sel) {
5584                         if (old_sel->covered_region && new_sel->covered_region) {
5585                                 /* We only want to redraw the areas that have
5586                                  * changed, so we xor the old and new regions
5587                                  * and redraw if it's different */
5588                                 region = gdk_region_copy (old_sel->covered_region);
5589                                 gdk_region_xor (region, new_sel->covered_region);
5590                                 if (gdk_region_empty (region)) {
5591                                         gdk_region_destroy (region);
5592                                         region = NULL;
5593                                 }
5594                         } else if (old_sel->covered_region) {
5595                                 region = gdk_region_copy (old_sel->covered_region);
5596                         } else if (new_sel->covered_region) {
5597                                 region = gdk_region_copy (new_sel->covered_region);
5598                         }
5599                 } else if (old_sel && !new_sel) {
5600                         if (old_sel->covered_region && !gdk_region_empty (old_sel->covered_region)) {
5601                                 region = gdk_region_copy (old_sel->covered_region);
5602                         }
5603                 } else if (!old_sel && new_sel) {
5604                         if (new_sel->covered_region && !gdk_region_empty (new_sel->covered_region)) {
5605                                 region = gdk_region_copy (new_sel->covered_region);
5606                         }
5607                 } else {
5608                         g_assert_not_reached ();
5609                 }
5610
5611                 /* Redraw the damaged region! */
5612                 if (region) {
5613                         GdkRectangle page_area;
5614                         GtkBorder border;
5615
5616                         /* I don't know why but the region is smaller
5617                          * than expected. This hack fixes it, I guess
5618                          * 10 pixels more won't hurt
5619                          */
5620                         gdk_region_shrink (region, -5, -5);
5621
5622                         get_page_extents (view, cur_page, &page_area, &border);
5623                         gdk_region_offset (region,
5624                                            page_area.x + border.left - view->scroll_x,
5625                                            page_area.y + border.top - view->scroll_y);
5626                         gdk_window_invalidate_region (view->layout.bin_window, region, TRUE);
5627                         gdk_region_destroy (region);
5628                 }
5629         }
5630
5631         /* Free the old list, now that we're done with it. */
5632         g_list_foreach (old_list, (GFunc) selection_free, NULL);
5633 }
5634
5635 static void
5636 compute_selections (EvView          *view,
5637                     EvSelectionStyle style,
5638                     GdkPoint        *start,
5639                     GdkPoint        *stop)
5640 {
5641         GList *list;
5642
5643         if (view->selection_mode == EV_VIEW_SELECTION_RECTANGLE)
5644                 list = compute_new_selection_rect (view, start, stop);
5645         else
5646                 list = compute_new_selection_text (view, style, start, stop);
5647         merge_selection_region (view, list);
5648 }
5649
5650 /* Free's the selection.  It's up to the caller to queue redraws if needed.
5651  */
5652 static void
5653 selection_free (EvViewSelection *selection)
5654 {
5655         if (selection->covered_region)
5656                 gdk_region_destroy (selection->covered_region);
5657         g_free (selection);
5658 }
5659
5660 static void
5661 clear_selection (EvView *view)
5662 {
5663         g_list_foreach (view->selection_info.selections, (GFunc)selection_free, NULL);
5664         view->selection_info.selections = NULL;
5665         view->selection_info.in_selection = FALSE;
5666         if (view->pixbuf_cache)
5667                 ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, NULL);
5668         g_object_notify (G_OBJECT (view), "has-selection");
5669 }
5670
5671 void
5672 ev_view_select_all (EvView *view)
5673 {
5674         GList *selections = NULL;
5675         int n_pages, i;
5676
5677         /* Disable selection on rotated pages for the 0.4.0 series */
5678         if (view->rotation != 0)
5679                 return;
5680
5681         clear_selection (view);
5682
5683         n_pages = ev_page_cache_get_n_pages (view->page_cache);
5684         for (i = 0; i < n_pages; i++) {
5685                 int width, height;
5686                 EvViewSelection *selection;
5687
5688                 ev_page_cache_get_size (view->page_cache,
5689                                         i,
5690                                         view->rotation,
5691                                         1.0, &width, &height);
5692
5693                 selection = g_new0 (EvViewSelection, 1);
5694                 selection->page = i;
5695                 selection->style = EV_SELECTION_STYLE_GLYPH;
5696                 selection->rect.x1 = selection->rect.y1 = 0;
5697                 selection->rect.x2 = width;
5698                 selection->rect.y2 = height;
5699
5700                 selections = g_list_append (selections, selection);
5701         }
5702
5703         merge_selection_region (view, selections);
5704         gtk_widget_queue_draw (GTK_WIDGET (view));
5705 }
5706
5707 gboolean
5708 ev_view_get_has_selection (EvView *view)
5709 {
5710         return view->selection_info.selections != NULL;
5711 }
5712
5713 static char *
5714 get_selected_text (EvView *view)
5715 {
5716         GString *text;
5717         GList *l;
5718         gchar *normalized_text;
5719         EvRenderContext *rc;
5720
5721         text = g_string_new (NULL);
5722         rc = ev_render_context_new (NULL, view->rotation, view->scale);
5723
5724         ev_document_doc_mutex_lock ();
5725
5726         for (l = view->selection_info.selections; l != NULL; l = l->next) {
5727                 EvViewSelection *selection = (EvViewSelection *)l->data;
5728                 EvPage *page;
5729                 gchar *tmp;
5730
5731                 page = ev_document_get_page (view->document, selection->page);
5732                 ev_render_context_set_page (rc, page);
5733                 g_object_unref (page);
5734
5735                 tmp = ev_selection_get_selected_text (EV_SELECTION (view->document),
5736                                                       rc, selection->style,
5737                                                       &(selection->rect));
5738
5739                 g_string_append (text, tmp);
5740                 g_free (tmp);
5741         }
5742
5743         g_object_unref (rc);
5744
5745         ev_document_doc_mutex_unlock ();
5746
5747         normalized_text = g_utf8_normalize (text->str, text->len, G_NORMALIZE_NFKC);
5748         g_string_free (text, TRUE);
5749         return normalized_text;
5750 }
5751
5752 static void
5753 ev_view_clipboard_copy (EvView      *view,
5754                         const gchar *text)
5755 {
5756         GtkClipboard *clipboard;
5757
5758         clipboard = gtk_widget_get_clipboard (GTK_WIDGET (view),
5759                                               GDK_SELECTION_CLIPBOARD);
5760         gtk_clipboard_set_text (clipboard, text, -1);
5761 }
5762
5763 void
5764 ev_view_copy (EvView *ev_view)
5765 {
5766         char *text;
5767
5768         if (!EV_IS_SELECTION (ev_view->document))
5769                 return;
5770
5771         text = get_selected_text (ev_view);
5772         ev_view_clipboard_copy (ev_view, text);
5773         g_free (text);
5774 }
5775
5776 static void
5777 ev_view_primary_get_cb (GtkClipboard     *clipboard,
5778                         GtkSelectionData *selection_data,
5779                         guint             info,
5780                         gpointer          data)
5781 {
5782         EvView *ev_view = EV_VIEW (data);
5783
5784         if (ev_view->link_selected) {
5785                 gtk_selection_data_set_text (selection_data,
5786                                              ev_link_action_get_uri (ev_view->link_selected),
5787                                              -1);
5788         } else if (EV_IS_SELECTION (ev_view->document) &&
5789                    ev_view->selection_info.selections) {
5790                 gchar *text;
5791
5792                 text = get_selected_text (ev_view);
5793                 if (text) {
5794                         gtk_selection_data_set_text (selection_data, text, -1);
5795                         g_free (text);
5796                 }
5797         }
5798 }
5799
5800 static void
5801 ev_view_primary_clear_cb (GtkClipboard *clipboard,
5802                           gpointer      data)
5803 {
5804         EvView *view = EV_VIEW (data);
5805
5806         clear_selection (view);
5807         clear_link_selected (view);
5808 }
5809
5810 static void
5811 ev_view_update_primary_selection (EvView *ev_view)
5812 {
5813         GtkClipboard *clipboard;
5814
5815         clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view),
5816                                               GDK_SELECTION_PRIMARY);
5817
5818         if (ev_view->selection_info.selections || ev_view->link_selected) {
5819                 if (!gtk_clipboard_set_with_owner (clipboard,
5820                                                    clipboard_targets,
5821                                                    G_N_ELEMENTS (clipboard_targets),
5822                                                    ev_view_primary_get_cb,
5823                                                    ev_view_primary_clear_cb,
5824                                                    G_OBJECT (ev_view)))
5825                         ev_view_primary_clear_cb (clipboard, ev_view);
5826         } else {
5827                 if (gtk_clipboard_get_owner (clipboard) == G_OBJECT (ev_view))
5828                         gtk_clipboard_clear (clipboard);
5829         }
5830 }
5831
5832 static void
5833 clear_link_selected (EvView *view)
5834 {
5835         if (view->link_selected) {
5836                 g_object_unref (view->link_selected);
5837                 view->link_selected = NULL;
5838         }
5839 }
5840
5841 void
5842 ev_view_copy_link_address (EvView       *view,
5843                            EvLinkAction *action)
5844 {
5845         clear_link_selected (view);
5846
5847         ev_view_clipboard_copy (view, ev_link_action_get_uri (action));
5848
5849         view->link_selected = g_object_ref (action);
5850         ev_view_update_primary_selection (view);
5851 }
5852
5853 /*** Cursor operations ***/
5854
5855 static GdkCursor *
5856 ev_view_create_invisible_cursor(void)
5857 {
5858        GdkBitmap *empty;
5859        GdkColor black = { 0, 0, 0, 0 };
5860        static char bits[] = { 0x00 };
5861
5862        empty = gdk_bitmap_create_from_data (NULL, bits, 1, 1);
5863
5864        return gdk_cursor_new_from_pixmap (empty, empty, &black, &black, 0, 0);
5865 }
5866
5867 static void
5868 ev_view_set_cursor (EvView *view, EvViewCursor new_cursor)
5869 {
5870         GdkCursor *cursor = NULL;
5871         GdkDisplay *display;
5872         GtkWidget *widget;
5873
5874         if (view->cursor == new_cursor) {
5875                 return;
5876         }
5877
5878         widget = gtk_widget_get_toplevel (GTK_WIDGET (view));
5879         display = gtk_widget_get_display (widget);
5880         view->cursor = new_cursor;
5881
5882         switch (new_cursor) {
5883                 case EV_VIEW_CURSOR_NORMAL:
5884                         gdk_window_set_cursor (view->layout.bin_window, NULL);
5885                         break;
5886                 case EV_VIEW_CURSOR_IBEAM:
5887                         cursor = gdk_cursor_new_for_display (display, GDK_XTERM);
5888                         break;
5889                 case EV_VIEW_CURSOR_LINK:
5890                         cursor = gdk_cursor_new_for_display (display, GDK_HAND2);
5891                         break;
5892                 case EV_VIEW_CURSOR_WAIT:
5893                         cursor = gdk_cursor_new_for_display (display, GDK_WATCH);
5894                         break;
5895                 case EV_VIEW_CURSOR_HIDDEN:
5896                         cursor = ev_view_create_invisible_cursor ();
5897                         break;
5898                 case EV_VIEW_CURSOR_DRAG:
5899                         cursor = gdk_cursor_new_for_display (display, GDK_FLEUR);
5900                         break;
5901                 case EV_VIEW_CURSOR_AUTOSCROLL:
5902                         cursor = gdk_cursor_new_for_display (display, GDK_DOUBLE_ARROW);
5903                         break;
5904         }
5905
5906         if (cursor) {
5907                 gdk_window_set_cursor (view->layout.bin_window, cursor);
5908                 gdk_cursor_unref (cursor);
5909                 gdk_flush();
5910         }
5911 }
5912
5913 void
5914 ev_view_hide_cursor (EvView *view)
5915 {
5916        ev_view_set_cursor (view, EV_VIEW_CURSOR_HIDDEN);
5917 }
5918
5919 void
5920 ev_view_show_cursor (EvView *view)
5921 {
5922        ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
5923 }
5924
5925 static void
5926 ev_view_reset_presentation_state (EvView *view)
5927 {
5928         if (!view->presentation ||
5929             view->presentation_state == EV_PRESENTATION_NORMAL)
5930                 return;
5931
5932         view->presentation_state = EV_PRESENTATION_NORMAL;
5933         gdk_window_set_background (view->layout.bin_window,
5934                                    &GTK_WIDGET (view)->style->black);
5935         gtk_widget_queue_draw (GTK_WIDGET (view));
5936 }
5937
5938 gboolean
5939 ev_view_next_page (EvView *view)
5940 {
5941         int page, n_pages;
5942
5943         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
5944
5945         if (!view->page_cache)
5946                 return FALSE;
5947
5948         if (view->presentation &&
5949             (view->presentation_state == EV_PRESENTATION_BLACK ||
5950              view->presentation_state == EV_PRESENTATION_WHITE)) {
5951                 ev_view_reset_presentation_state (view);
5952                 return FALSE;
5953         }
5954
5955         if (view->animation) {
5956                 ev_view_transition_animation_finish (view->animation, view);
5957                 return TRUE;
5958         }
5959
5960         ev_view_presentation_transition_stop (view);
5961         ev_view_reset_presentation_state (view);
5962
5963         page = ev_page_cache_get_current_page (view->page_cache);
5964         n_pages = ev_page_cache_get_n_pages (view->page_cache);
5965
5966         if (view->dual_page && !view->presentation)
5967                 page = page + 2;
5968         else
5969                 page = page + 1;
5970
5971         if (page < n_pages) {
5972                 ev_page_cache_set_current_page (view->page_cache, page);
5973                 return TRUE;
5974         } else if (view->presentation && page == n_pages) {
5975                 view->presentation_state = EV_PRESENTATION_END;
5976                 gtk_widget_queue_draw (GTK_WIDGET (view));
5977                 return TRUE;
5978         } else if (view->dual_page && page == n_pages) {
5979                 ev_page_cache_set_current_page (view->page_cache, page - 1);
5980                 return TRUE;
5981         } else {
5982                 return FALSE;
5983         }
5984 }
5985
5986 gboolean
5987 ev_view_previous_page (EvView *view)
5988 {
5989         int page;
5990
5991         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
5992
5993         if (!view->page_cache)
5994                 return FALSE;
5995
5996         if (view->presentation &&
5997             view->presentation_state == EV_PRESENTATION_END) {
5998                 ev_view_reset_presentation_state (view);
5999                 return TRUE;
6000         }
6001
6002         if (view->presentation &&
6003             (view->presentation_state == EV_PRESENTATION_BLACK ||
6004              view->presentation_state == EV_PRESENTATION_WHITE)) {
6005                 ev_view_reset_presentation_state (view);
6006                 return FALSE;
6007         }
6008
6009         if (view->animation) {
6010                 ev_view_transition_animation_finish (view->animation, view);
6011                 return TRUE;
6012         }
6013
6014         ev_view_reset_presentation_state (view);
6015
6016         page = ev_page_cache_get_current_page (view->page_cache);
6017
6018         if (view->dual_page && !view->presentation)
6019                 page = page - 2;
6020         else
6021                 page = page - 1;
6022
6023         if (page >= 0) {
6024                 ev_page_cache_set_current_page (view->page_cache, page);
6025                 return TRUE;
6026         } else if (ev_view_get_dual_page (view) && page == -1) {
6027                 ev_page_cache_set_current_page (view->page_cache, 0);
6028                 return TRUE;
6029         } else {
6030                 return FALSE;
6031         }
6032 }
6033
6034 /*** Enum description for usage in signal ***/
6035
6036 GType
6037 ev_sizing_mode_get_type (void)
6038 {
6039   static GType etype = 0;
6040   if (etype == 0) {
6041     static const GEnumValue values[] = {
6042       { EV_SIZING_FIT_WIDTH, "EV_SIZING_FIT_WIDTH", "fit-width" },
6043       { EV_SIZING_BEST_FIT, "EV_SIZING_BEST_FIT", "best-fit" },
6044       { EV_SIZING_FREE, "EV_SIZING_FREE", "free" },
6045       { 0, NULL, NULL }
6046     };
6047     etype = g_enum_register_static ("EvSizingMode", values);
6048   }
6049   return etype;
6050 }
6051
6052 GType
6053 ev_scroll_type_get_type (void)
6054 {
6055   static GType etype = 0;
6056   if (etype == 0) {
6057     static const GEnumValue values[] = {
6058       { EV_SCROLL_PAGE_FORWARD, "EV_SCROLL_PAGE_FORWARD", "scroll-page-forward" },
6059       { EV_SCROLL_PAGE_BACKWARD, "EV_SCROLL_PAGE_BACKWARD", "scroll-page-backward" },
6060       { EV_SCROLL_STEP_FORWARD, "EV_SCROLL_STEP_FORWARD", "scroll-step-forward" },
6061       { EV_SCROLL_STEP_FORWARD, "EV_SCROLL_STEP_FORWARD", "scroll-step-forward" },
6062       { EV_SCROLL_STEP_UP, "EV_SCROLL_STEP_UP", "scroll-step-up" },
6063       { EV_SCROLL_STEP_DOWN, "EV_SCROLL_STEP_DOWN", "scroll-step-down" },
6064       { 0, NULL, NULL }
6065     };
6066     etype = g_enum_register_static ("EvScrollType", values);
6067   }
6068   return etype;
6069 }
6070
6071 void
6072 ev_view_update_view_size (EvView *view, GtkScrolledWindow * scrolled_window)
6073 {
6074         int width, height;
6075         GtkRequisition vsb_requisition;
6076         GtkRequisition hsb_requisition;
6077         int scrollbar_spacing;
6078
6079         /* Calculate the width available for the content */
6080         width  = GTK_WIDGET (scrolled_window)->allocation.width;
6081         height = GTK_WIDGET (scrolled_window)->allocation.height;
6082
6083         if (gtk_scrolled_window_get_shadow_type (scrolled_window) == GTK_SHADOW_IN
6084             && view) {
6085                 width -=  2 * GTK_WIDGET(view)->style->xthickness;
6086                 height -= 2 * GTK_WIDGET(view)->style->ythickness;
6087         }
6088
6089         gtk_widget_size_request (scrolled_window->vscrollbar, &vsb_requisition);
6090         gtk_widget_size_request (scrolled_window->hscrollbar, &hsb_requisition);
6091         gtk_widget_style_get (GTK_WIDGET (scrolled_window),
6092                               "scrollbar_spacing",
6093                               &scrollbar_spacing,
6094                               NULL);
6095
6096         if (EV_IS_VIEW(view)) {
6097                 ev_view_set_zoom_for_size (EV_VIEW (view),
6098                                            MAX (1, width),
6099                                            MAX (1, height),
6100                                            vsb_requisition.width + scrollbar_spacing,
6101                                            hsb_requisition.height + scrollbar_spacing);
6102         }
6103 }