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