shell/ev-view.c

   1 /* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8; c-indent-level: 8 -*- */
   2 /* this file is part of evince, a gnome document viewer
   3  *
   4  *  Copyright (C) 2004 Red Hat, Inc
   5  *
   6  * Evince is free software; you can redistribute it and/or modify it
   7  * under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * Evince is distributed in the hope that it will be useful, but
  12  * WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
  19  */
  20
  21 #include <stdlib.h>
  22 #include <math.h>
  23 #include <string.h>
  24 #include <gtk/gtkalignment.h>
  25 #include <glib/gi18n.h>
  26 #include <gtk/gtkbindings.h>
  27 #include <gtk/gtkselection.h>
  28 #include <gtk/gtkclipboard.h>
  29 #include <gdk/gdkkeysyms.h>
  30 #include <libgnomevfs/gnome-vfs-utils.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-selection.h"
  37 #include "ev-document-links.h"
  38 #include "ev-document-images.h"
  39 #include "ev-document-find.h"
  40 #include "ev-document-transition.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-tooltip.h"
  46 #include "ev-application.h"
  47
  48 #define EV_VIEW_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass), EV_TYPE_VIEW, EvViewClass))
  49 #define EV_IS_VIEW_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), EV_TYPE_VIEW))
  50 #define EV_VIEW_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj), EV_TYPE_VIEW, EvViewClass))
  51
  52
  53 enum {
  54         PROP_0,
  55         PROP_STATUS,
  56         PROP_FIND_STATUS,
  57         PROP_CONTINUOUS,
  58         PROP_DUAL_PAGE,
  59         PROP_FULLSCREEN,
  60         PROP_PRESENTATION,
  61         PROP_SIZING_MODE,
  62         PROP_ZOOM,
  63         PROP_ROTATION,
  64         PROP_HAS_SELECTION,
  65 };
  66
  67 enum {
  68         SIGNAL_BINDING_ACTIVATED,
  69         SIGNAL_ZOOM_INVALID,
  70         SIGNAL_EXTERNAL_LINK,
  71         SIGNAL_POPUP_MENU,
  72         N_SIGNALS,
  73 };
  74
  75 enum {
  76         TARGET_DND_URI,
  77         TARGET_DND_TEXT,
  78         TARGET_DND_IMAGE
  79 };
  80
  81 enum {
  82         TARGET_STRING,
  83         TARGET_TEXT,
  84         TARGET_COMPOUND_TEXT,
  85         TARGET_UTF8_STRING,
  86         TARGET_TEXT_BUFFER_CONTENTS
  87 };
  88
  89 static const GtkTargetEntry clipboard_targets[] = {
  90         { "STRING", 0, TARGET_STRING },
  91         { "TEXT",   0, TARGET_TEXT },
  92         { "COMPOUND_TEXT", 0, TARGET_COMPOUND_TEXT },
  93         { "UTF8_STRING", 0, TARGET_UTF8_STRING },
  94 };
  95
  96 static const GtkTargetEntry view_drop_targets[] = {
  97         { "text/uri-list", 0, 0 }
  98 };
  99
 100 static guint signals[N_SIGNALS];
 101
 102 typedef enum {
 103         EV_VIEW_FIND_NEXT,
 104         EV_VIEW_FIND_PREV
 105 } EvViewFindDirection;
 106
 107 #define ZOOM_IN_FACTOR  1.2
 108 #define ZOOM_OUT_FACTOR (1.0/ZOOM_IN_FACTOR)
 109
 110 #define MIN_SCALE 0.05409
 111 #define MAX_SCALE 4.0
 112
 113 #define SCROLL_TIME 150
 114
 115 /*** Scrolling ***/
 116 static void       scroll_to_current_page                     (EvView *view,
 117                                                               GtkOrientation orientation);
 118 static void       ev_view_set_scroll_adjustments             (EvView             *view,
 119                                                               GtkAdjustment      *hadjustment,
 120                                                               GtkAdjustment      *vadjustment);
 121 static void       view_update_range_and_current_page         (EvView             *view);
 122 static void       set_scroll_adjustment                      (EvView             *view,
 123                                                               GtkOrientation      orientation,
 124                                                               GtkAdjustment      *adjustment);
 125 static void       add_scroll_binding_keypad                  (GtkBindingSet      *binding_set,
 126                                                               guint               keyval,
 127                                                               GdkModifierType modifiers,
 128                                                               EvScrollType       scroll,
 129                                                               gboolean            horizontal);
 130 static void       ensure_rectangle_is_visible                (EvView             *view,
 131                                                               GdkRectangle       *rect);
 132
 133 /*** Geometry computations ***/
 134 static void       compute_border                             (EvView             *view,
 135                                                               int                 width,
 136                                                               int                 height,
 137                                                               GtkBorder          *border);
 138 static void       get_page_y_offset                          (EvView *view,
 139                                                               int page,
 140                                                               double zoom,
 141                                                               int *y_offset);
 142 static gboolean   get_page_extents                           (EvView             *view,
 143                                                               gint                page,
 144                                                               GdkRectangle       *page_area,
 145                                                               GtkBorder          *border);
 146 static void       view_rect_to_doc_rect                      (EvView             *view,
 147                                                               GdkRectangle       *view_rect,
 148                                                               GdkRectangle       *page_area,
 149                                                               EvRectangle        *doc_rect);
 150 static void       doc_rect_to_view_rect                      (EvView             *view,
 151                                                               int                 page,
 152                                                               EvRectangle        *doc_rect,
 153                                                               GdkRectangle       *view_rect);
 154 static void       find_page_at_location                      (EvView             *view,
 155                                                               gdouble             x,
 156                                                               gdouble             y,
 157                                                               gint               *page,
 158                                                               gint               *x_offset,
 159                                                               gint               *y_offset);
 160 static gboolean  doc_point_to_view_point                     (EvView       *view,
 161                                                               int           page,
 162                                                               EvPoint      *doc_point,
 163                                                               GdkPoint     *view_point);
 164 /*** Hyperrefs ***/
 165 static EvLink *   ev_view_get_link_at_location               (EvView  *view,
 166                                                               gdouble  x,
 167                                                               gdouble  y);
 168 static char*      tip_from_link                              (EvView             *view,
 169                                                               EvLink             *link);
 170 static void       handle_link_over_xy                        (EvView *view,
 171                                                               gint x,
 172                                                               gint y);
 173 /*** GtkWidget implementation ***/
 174 static void       ev_view_size_request_continuous_dual_page  (EvView             *view,
 175                                                               GtkRequisition     *requisition);
 176 static void       ev_view_size_request_continuous            (EvView             *view,
 177                                                               GtkRequisition     *requisition);
 178 static void       ev_view_size_request_dual_page             (EvView             *view,
 179                                                               GtkRequisition     *requisition);
 180 static void       ev_view_size_request_single_page           (EvView             *view,
 181                                                               GtkRequisition     *requisition);
 182 static void       ev_view_size_request                       (GtkWidget          *widget,
 183                                                               GtkRequisition     *requisition);
 184 static void       ev_view_size_allocate                      (GtkWidget          *widget,
 185                                                               GtkAllocation      *allocation);
 186 static void       ev_view_realize                            (GtkWidget          *widget);
 187 static gboolean   ev_view_scroll_event                       (GtkWidget          *widget,
 188                                                               GdkEventScroll     *event);
 189 static gboolean   ev_view_expose_event                       (GtkWidget          *widget,
 190                                                               GdkEventExpose     *event);
 191 static gboolean   ev_view_popup_menu                         (GtkWidget          *widget);
 192 static gboolean   ev_view_button_press_event                 (GtkWidget          *widget,
 193                                                               GdkEventButton     *event);
 194 static gboolean   ev_view_motion_notify_event                (GtkWidget          *widget,
 195                                                               GdkEventMotion     *event);
 196 static gboolean   ev_view_button_release_event               (GtkWidget          *widget,
 197                                                               GdkEventButton     *event);
 198 static gboolean   ev_view_enter_notify_event                 (GtkWidget          *widget,
 199                                                               GdkEventCrossing   *event);
 200 static gboolean   ev_view_leave_notify_event                 (GtkWidget          *widget,
 201                                                               GdkEventCrossing   *event);
 202 static void       ev_view_style_set                          (GtkWidget          *widget,
 203                                                               GtkStyle           *old_style);
 204
 205 static AtkObject *ev_view_get_accessible                     (GtkWidget *widget);
 206
 207 /*** Drawing ***/
 208 static guint32    ev_gdk_color_to_rgb                        (const GdkColor     *color);
 209 static void       draw_rubberband                            (GtkWidget          *widget,
 210                                                               GdkWindow          *window,
 211                                                               const GdkRectangle *rect,
 212                                                               guchar              alpha);
 213 static void       highlight_find_results                     (EvView             *view,
 214                                                               int                 page);
 215 static void       draw_one_page                              (EvView             *view,
 216                                                               gint                page,
 217                                                               GdkRectangle       *page_area,
 218                                                               GtkBorder          *border,
 219                                                               GdkRectangle       *expose_area,
 220                                                               gboolean           *page_ready);
 221 static void       draw_loading_text                          (EvView             *view,
 222                                                               GdkRectangle       *page_area,
 223                                                               GdkRectangle       *expose_area);
 224
 225 /*** Callbacks ***/
 226 static void       find_changed_cb                            (EvDocument         *document,
 227                                                               int                 page,
 228                                                               EvView             *view);
 229 static void       job_finished_cb                            (EvPixbufCache      *pixbuf_cache,
 230                                                               EvView             *view);
 231 static void       page_changed_cb                            (EvPageCache        *page_cache,
 232                                                               int                 new_page,
 233                                                               EvView             *view);
 234 static void       on_adjustment_value_changed                (GtkAdjustment      *adjustment,
 235                                                               EvView             *view);
 236
 237 /*** GObject ***/
 238 static void       ev_view_finalize                           (GObject            *object);
 239 static void       ev_view_destroy                            (GtkObject          *object);
 240 static void       ev_view_set_property                       (GObject            *object,
 241                                                               guint               prop_id,
 242                                                               const GValue       *value,
 243                                                               GParamSpec         *pspec);
 244 static void       ev_view_get_property                       (GObject            *object,
 245                                                               guint               prop_id,
 246                                                               GValue             *value,
 247                                                               GParamSpec         *pspec);
 248 static void       ev_view_class_init                         (EvViewClass        *class);
 249 static void       ev_view_init                               (EvView             *view);
 250
 251 /*** Zoom and sizing ***/
 252 static double   zoom_for_size_fit_width                      (int doc_width,
 253                                                               int doc_height,
 254                                                               int target_width,
 255                                                               int target_height,
 256                                                               int vsb_width);
 257 static double   zoom_for_size_fit_height                     (int doc_width,
 258                                                               int doc_height,
 259                                                               int target_width,
 260                                                               int target_height,
 261                                                               int vsb_height);
 262 static double   zoom_for_size_best_fit                       (int doc_width,
 263                                                               int doc_height,
 264                                                               int target_width,
 265                                                               int target_height,
 266                                                               int vsb_width,
 267                                                               int hsb_width);
 268 static void     ev_view_zoom_for_size_presentation           (EvView *view,
 269                                                               int     width,
 270                                                               int     height);
 271 static void     ev_view_zoom_for_size_continuous_and_dual_page (EvView *view,
 272                                                                 int     width,
 273                                                                 int     height,
 274                                                                 int     vsb_width,
 275                                                                 int     hsb_height);
 276 static void     ev_view_zoom_for_size_continuous               (EvView *view,
 277                                                                 int     width,
 278                                                                 int     height,
 279                                                                 int     vsb_width,
 280                                                                 int     hsb_height);
 281 static void     ev_view_zoom_for_size_dual_page                (EvView *view,
 282                                                                 int     width,
 283                                                                 int     height,
 284                                                                 int     vsb_width,
 285                                                                 int     hsb_height);
 286 static void     ev_view_zoom_for_size_single_page              (EvView *view,
 287                                                                 int     width,
 288                                                                 int     height,
 289                                                                 int     vsb_width,
 290                                                                 int     hsb_height);
 291 /*** Cursors ***/
 292 static GdkCursor* ev_view_create_invisible_cursor            (void);
 293 static void       ev_view_set_cursor                         (EvView             *view,
 294                                                               EvViewCursor        new_cursor);
 295
 296 /*** Status messages ***/
 297 static void       ev_view_set_status                         (EvView             *view,
 298                                                               const char         *message);
 299 static void       update_find_status_message                 (EvView             *view,
 300                                                               gboolean            this_page);
 301 static void       ev_view_set_find_status                    (EvView             *view,
 302                                                               const char         *message);
 303 /*** Find ***/
 304 static void       jump_to_find_result                        (EvView             *view);
 305 static void       jump_to_find_page                          (EvView             *view,
 306                                                               EvViewFindDirection direction,
 307                                                               gint                shift);
 308
 309 /*** Selection ***/
 310 static void       compute_selections                         (EvView             *view,
 311                                                               GdkPoint           *start,
 312                                                               GdkPoint           *stop);
 313 static void       clear_selection                            (EvView             *view);
 314 static void       selection_free                             (EvViewSelection    *selection);
 315 static char*      get_selected_text                          (EvView             *ev_view);
 316 static void       ev_view_primary_get_cb                     (GtkClipboard       *clipboard,
 317                                                               GtkSelectionData   *selection_data,
 318                                                               guint               info,
 319                                                               gpointer            data);
 320 static void       ev_view_primary_clear_cb                   (GtkClipboard       *clipboard,
 321                                                               gpointer            data);
 322 static void       ev_view_update_primary_selection           (EvView             *ev_view);
 323
 324 /*** Presentation ***/
 325 static void       ev_view_presentation_transition_start      (EvView             *ev_view);
 326 static void       ev_view_presentation_transition_stop       (EvView             *ev_view);
 327
 328
 329 G_DEFINE_TYPE (EvView, ev_view, GTK_TYPE_WIDGET)
 330
 331 static void
 332 scroll_to_current_page (EvView *view, GtkOrientation orientation)
 333 {
 334         GdkPoint view_point;
 335
 336         if (view->document == NULL) {
 337                 return;
 338         }
 339
 340         doc_point_to_view_point (view, view->current_page, &view->pending_point, &view_point);
 341
 342         if (orientation == GTK_ORIENTATION_VERTICAL) {
 343                 view->pending_point.y = 0;
 344         } else {
 345                 view->pending_point.x = 0;
 346         }
 347
 348         if (orientation == GTK_ORIENTATION_VERTICAL) {
 349                 if (view->continuous) {
 350                         gtk_adjustment_clamp_page (view->vadjustment,
 351                                                    view_point.y - view->spacing / 2,
 352                                                    view_point.y + view->vadjustment->page_size);
 353                 } else {
 354                         gtk_adjustment_set_value (view->vadjustment,
 355                                                   CLAMP (view_point.y,
 356                                                   view->vadjustment->lower,
 357                                                   view->vadjustment->upper -
 358                                                   view->vadjustment->page_size));
 359                 }
 360         } else {
 361                 if (view->dual_page) {
 362                         gtk_adjustment_clamp_page (view->hadjustment,
 363                                                    view_point.x,
 364                                                    view_point.x + view->hadjustment->page_size);
 365                 } else {
 366                         gtk_adjustment_set_value (view->hadjustment,
 367                                                   CLAMP (view_point.x,
 368                                                   view->hadjustment->lower,
 369                                                   view->hadjustment->upper -
 370                                                   view->hadjustment->page_size));
 371                 }
 372         }
 373 }
 374
 375 static void
 376 view_set_adjustment_values (EvView         *view,
 377                             GtkOrientation  orientation)
 378 {
 379         GtkWidget *widget = GTK_WIDGET (view);
 380         GtkAdjustment *adjustment;
 381         int requisition;
 382         int allocation;
 383
 384         double factor;
 385         gint new_value;
 386
 387         if (orientation == GTK_ORIENTATION_HORIZONTAL)  {
 388                 requisition = widget->requisition.width;
 389                 allocation = widget->allocation.width;
 390                 adjustment = view->hadjustment;
 391         } else {
 392                 requisition = widget->requisition.height;
 393                 allocation = widget->allocation.height;
 394                 adjustment = view->vadjustment;
 395         }
 396
 397         if (!adjustment)
 398                 return;
 399
 400         factor = 1.0;
 401         switch (view->pending_scroll) {
 402                 case SCROLL_TO_KEEP_POSITION:
 403                 case SCROLL_TO_FIND_LOCATION:
 404                         factor = (adjustment->value) / adjustment->upper;
 405                         break;
 406                 case SCROLL_TO_PAGE_POSITION:
 407                         break;
 408                 case SCROLL_TO_CENTER:
 409                         factor = (adjustment->value + adjustment->page_size * 0.5) / adjustment->upper;
 410                         break;
 411         }
 412
 413         adjustment->page_size = allocation;
 414         adjustment->step_increment = allocation * 0.1;
 415         adjustment->page_increment = allocation * 0.9;
 416         adjustment->lower = 0;
 417         adjustment->upper = MAX (allocation, requisition);
 418
 419         /*
 420          * We add 0.5 to the values before to average out our rounding errors.
 421          */
 422         switch (view->pending_scroll) {
 423                 case SCROLL_TO_KEEP_POSITION:
 424                 case SCROLL_TO_FIND_LOCATION:
 425                         new_value = CLAMP (adjustment->upper * factor + 0.5, 0, adjustment->upper - adjustment->page_size);
 426                         gtk_adjustment_set_value (adjustment, (int)new_value);
 427                         break;
 428                 case SCROLL_TO_PAGE_POSITION:
 429                         scroll_to_current_page (view, orientation);
 430                         break;
 431                 case SCROLL_TO_CENTER:
 432                         new_value = CLAMP (adjustment->upper * factor - adjustment->page_size * 0.5 + 0.5,
 433                                            0, adjustment->upper - adjustment->page_size);
 434                         gtk_adjustment_set_value (adjustment, (int)new_value);
 435                         break;
 436         }
 437
 438         gtk_adjustment_changed (adjustment);
 439 }
 440
 441 static void
 442 view_update_range_and_current_page (EvView *view)
 443 {
 444         gint current_page;
 445         gint best_current_page = -1;
 446
 447         /* Presentation trumps all other modes */
 448         if (view->presentation) {
 449                 view->start_page = view->current_page;
 450                 view->end_page = view->current_page;
 451         } else if (view->continuous) {
 452                 GdkRectangle current_area, unused, page_area;
 453                 GtkBorder border;
 454                 gboolean found = FALSE;
 455                 gint area_max = -1, area;
 456                 int i;
 457
 458                 if (!(view->vadjustment && view->hadjustment))
 459                         return;
 460
 461                 current_area.x = view->hadjustment->value;
 462                 current_area.width = view->hadjustment->upper;
 463                 current_area.y = view->vadjustment->value;
 464                 current_area.height = view->vadjustment->page_size;
 465
 466                 for (i = 0; i < ev_page_cache_get_n_pages (view->page_cache); i++) {
 467
 468                         get_page_extents (view, i, &page_area, &border);
 469
 470                         if (gdk_rectangle_intersect (&current_area, &page_area, &unused)) {
 471                                 area = unused.width * unused.height;
 472
 473                                 if (!found) {
 474                                         area_max = area;
 475                                         view->start_page = i;
 476                                         found = TRUE;
 477                                         best_current_page = i;
 478                                 }
 479                                 if (area > area_max) {
 480                                         best_current_page = (area == area_max) ? MIN (i, best_current_page) : i;
 481                                         area_max = area;
 482                                 }
 483
 484                                 view->end_page = i;
 485                         } else if (found) {
 486                                 break;
 487                         }
 488                 }
 489
 490         } else if (view->dual_page) {
 491                 if (view->current_page % 2 == ev_page_cache_get_dual_even_left (view->page_cache)) {
 492                         view->start_page = view->current_page;
 493                         if (view->current_page + 1 < ev_page_cache_get_n_pages (view->page_cache))
 494                                 view->end_page = view->start_page + 1;
 495                         else
 496                                 view->end_page = view->start_page;
 497                 } else {
 498                         if (view->current_page < 1)
 499                                 view->start_page = view->current_page;
 500                         else
 501                                 view->start_page = view->current_page - 1;
 502                         view->end_page = view->current_page;
 503                 }
 504         } else {
 505                 view->start_page = view->current_page;
 506                 view->end_page = view->current_page;
 507         }
 508
 509         best_current_page = MAX (best_current_page, view->start_page);
 510         current_page = ev_page_cache_get_current_page (view->page_cache);
 511
 512         if ((current_page != best_current_page) && (view->pending_scroll == SCROLL_TO_KEEP_POSITION)) {
 513                 view->current_page = best_current_page;
 514                 ev_page_cache_set_current_page (view->page_cache, best_current_page);
 515         }
 516
 517         ev_pixbuf_cache_set_page_range (view->pixbuf_cache,
 518                                         view->start_page,
 519                                         view->end_page,
 520                                         view->rotation,
 521                                         view->scale,
 522                                         view->selection_info.selections);
 523 }
 524
 525 static void
 526 set_scroll_adjustment (EvView *view,
 527                        GtkOrientation  orientation,
 528                        GtkAdjustment  *adjustment)
 529 {
 530         GtkAdjustment **to_set;
 531
 532         if (orientation == GTK_ORIENTATION_HORIZONTAL)
 533                 to_set = &view->hadjustment;
 534         else
 535                 to_set = &view->vadjustment;
 536
 537         if (*to_set != adjustment) {
 538                 if (*to_set) {
 539                         g_signal_handlers_disconnect_by_func (*to_set,
 540                                                               (gpointer) on_adjustment_value_changed,
 541                                                               view);
 542                         g_object_unref (*to_set);
 543                 }
 544
 545                 *to_set = adjustment;
 546                 view_set_adjustment_values (view, orientation);
 547
 548                 if (*to_set) {
 549                         g_object_ref (*to_set);
 550                         g_signal_connect (*to_set, "value_changed",
 551                                           G_CALLBACK (on_adjustment_value_changed), view);
 552                 }
 553         }
 554 }
 555
 556 static void
 557 ev_view_set_scroll_adjustments (EvView *view,
 558                                 GtkAdjustment  *hadjustment,
 559                                 GtkAdjustment  *vadjustment)
 560 {
 561         set_scroll_adjustment (view, GTK_ORIENTATION_HORIZONTAL, hadjustment);
 562         set_scroll_adjustment (view, GTK_ORIENTATION_VERTICAL, vadjustment);
 563
 564         on_adjustment_value_changed (NULL, view);
 565 }
 566
 567 static void
 568 add_scroll_binding_keypad (GtkBindingSet  *binding_set,
 569                            guint           keyval,
 570                            GdkModifierType modifiers,
 571                            EvScrollType    scroll,
 572                            gboolean        horizontal)
 573 {
 574   guint keypad_keyval = keyval - GDK_Left + GDK_KP_Left;
 575
 576   gtk_binding_entry_add_signal (binding_set, keyval, modifiers,
 577                                 "binding_activated", 2,
 578                                 EV_TYPE_SCROLL_TYPE, scroll,
 579                                 G_TYPE_BOOLEAN, horizontal);
 580   gtk_binding_entry_add_signal (binding_set, keypad_keyval, modifiers,
 581                                 "binding_activated", 2,
 582                                 EV_TYPE_SCROLL_TYPE, scroll,
 583                                 G_TYPE_BOOLEAN, horizontal);
 584 }
 585
 586 void
 587 ev_view_scroll (EvView        *view,
 588                 EvScrollType   scroll,
 589                 gboolean horizontal)
 590 {
 591         GtkAdjustment *adjustment;
 592         double value, increment;
 593         gboolean first_page = FALSE;
 594         gboolean last_page = FALSE;
 595
 596         view->jump_to_find_result = FALSE;
 597
 598         if (view->presentation || view->sizing_mode == EV_SIZING_BEST_FIT) {
 599                 switch (scroll) {
 600                         case EV_SCROLL_PAGE_BACKWARD:
 601                         case EV_SCROLL_STEP_BACKWARD:
 602                                 ev_view_previous_page (view);
 603                                 break;
 604                         case EV_SCROLL_PAGE_FORWARD:
 605                         case EV_SCROLL_STEP_FORWARD:
 606                                 ev_view_next_page (view);
 607                                 break;
 608                         default:
 609                                 break;
 610                 }
 611                 return;
 612         }
 613
 614         /* Assign values for increment and vertical adjustment */
 615         adjustment = horizontal ? view->hadjustment : view->vadjustment;
 616         increment = adjustment->page_size * 0.75;
 617         value = adjustment->value;
 618
 619         /* Assign boolean for first and last page */
 620         if (view->current_page == 0)
 621                 first_page = TRUE;
 622         if (view->current_page == ev_page_cache_get_n_pages (view->page_cache) - 1)
 623                 last_page = TRUE;
 624
 625         switch (scroll) {
 626                 case EV_SCROLL_PAGE_BACKWARD:
 627                         /* Do not jump backwards if at the first page */
 628                         if (value == (adjustment->lower) && first_page) {
 629                                 /* Do nothing */
 630                                 /* At the top of a page, assign the upper bound limit of previous page */
 631                         } else if (value == (adjustment->lower)) {
 632                                 value = adjustment->upper - adjustment->page_size;
 633                                 ev_view_previous_page (view);
 634                                 /* Jump to the top */
 635                         } else {
 636                                 value = MAX (value - increment, adjustment->lower);
 637                         }
 638                         break;
 639                 case EV_SCROLL_PAGE_FORWARD:
 640                         /* Do not jump forward if at the last page */
 641                         if (value == (adjustment->upper - adjustment->page_size) && last_page) {
 642                                 /* Do nothing */
 643                         /* At the bottom of a page, assign the lower bound limit of next page */
 644                         } else if (value == (adjustment->upper - adjustment->page_size)) {
 645                                 value = 0;
 646                                 ev_view_next_page (view);
 647                         /* Jump to the bottom */
 648                         } else {
 649                                 value = MIN (value + increment, adjustment->upper - adjustment->page_size);
 650                         }
 651                         break;
 652                 case EV_SCROLL_STEP_BACKWARD:
 653                         value -= adjustment->step_increment;
 654                         break;
 655                 case EV_SCROLL_STEP_FORWARD:
 656                         value += adjustment->step_increment;
 657                         break;
 658                 case EV_SCROLL_STEP_DOWN:
 659                         value -= adjustment->step_increment / 10;
 660                         break;
 661                 case EV_SCROLL_STEP_UP:
 662                         value += adjustment->step_increment / 10;
 663                         break;
 664                 default:
 665                         break;
 666         }
 667
 668         value = CLAMP (value, adjustment->lower,
 669                        adjustment->upper - adjustment->page_size);
 670
 671         gtk_adjustment_set_value (adjustment, value);
 672 }
 673
 674 #define MARGIN 5
 675
 676 static void
 677 ensure_rectangle_is_visible (EvView *view, GdkRectangle *rect)
 678 {
 679         GtkWidget *widget = GTK_WIDGET (view);
 680         GtkAdjustment *adjustment;
 681         int value;
 682
 683         view->pending_scroll = SCROLL_TO_FIND_LOCATION;
 684
 685         adjustment = view->vadjustment;
 686
 687         if (rect->y < adjustment->value) {
 688                 value = MAX (adjustment->lower, rect->y - MARGIN);
 689                 gtk_adjustment_set_value (view->vadjustment, value);
 690         } else if (rect->y + rect->height >
 691                    adjustment->value + widget->allocation.height) {
 692                 value = MIN (adjustment->upper, rect->y + rect->height -
 693                              widget->allocation.height + MARGIN);
 694                 gtk_adjustment_set_value (view->vadjustment, value);
 695         }
 696
 697         adjustment = view->hadjustment;
 698
 699         if (rect->x < adjustment->value) {
 700                 value = MAX (adjustment->lower, rect->x - MARGIN);
 701                 gtk_adjustment_set_value (view->hadjustment, value);
 702         } else if (rect->x + rect->height >
 703                    adjustment->value + widget->allocation.width) {
 704                 value = MIN (adjustment->upper, rect->x + rect->width -
 705                              widget->allocation.width + MARGIN);
 706                 gtk_adjustment_set_value (view->hadjustment, value);
 707         }
 708
 709         gtk_widget_queue_resize (GTK_WIDGET (view));
 710 }
 711
 712 /*** Geometry computations ***/
 713
 714 static void
 715 compute_border (EvView *view, int width, int height, GtkBorder *border)
 716 {
 717         if (view->presentation) {
 718                 border->left = 0;
 719                 border->right = 0;
 720                 border->top = 0;
 721                 border->bottom = 0;
 722         } else {
 723                 ev_document_misc_get_page_border_size (width, height, border);
 724         }
 725 }
 726
 727 static void
 728 get_page_y_offset (EvView *view, int page, double zoom, int *y_offset)
 729 {
 730         int max_width, offset;
 731         GtkBorder border;
 732
 733         g_return_if_fail (y_offset != NULL);
 734
 735         ev_page_cache_get_max_width (view->page_cache, view->rotation, zoom, &max_width);
 736
 737         compute_border (view, max_width, max_width, &border);
 738
 739         if (view->dual_page) {
 740                 ev_page_cache_get_height_to_page (view->page_cache, page,
 741                                                   view->rotation, zoom, NULL, &offset);
 742                 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);
 743         } else {
 744                 ev_page_cache_get_height_to_page (view->page_cache, page,
 745                                                   view->rotation, zoom, &offset, NULL);
 746                 offset += (page + 1) * view->spacing + page * (border.top + border.bottom);
 747         }
 748
 749         *y_offset = offset;
 750         return;
 751 }
 752
 753 static gboolean
 754 get_page_extents (EvView       *view,
 755                   gint          page,
 756                   GdkRectangle *page_area,
 757                   GtkBorder    *border)
 758 {
 759         GtkWidget *widget;
 760         int width, height;
 761
 762         widget = GTK_WIDGET (view);
 763
 764         /* Get the size of the page */
 765         ev_page_cache_get_size (view->page_cache, page,
 766                                 view->rotation,
 767                                 view->scale,
 768                                 &width, &height);
 769         compute_border (view, width, height, border);
 770         page_area->width = width + border->left + border->right;
 771         page_area->height = height + border->top + border->bottom;
 772
 773         if (view->presentation) {
 774                 page_area->x = (MAX (0, widget->allocation.width - width))/2;
 775                 page_area->y = (MAX (0, widget->allocation.height - height))/2;
 776         } else if (view->continuous) {
 777                 gint max_width;
 778                 gint x, y;
 779
 780                 ev_page_cache_get_max_width (view->page_cache, view->rotation,
 781                                              view->scale, &max_width);
 782                 max_width = max_width + border->left + border->right;
 783                 /* Get the location of the bounding box */
 784                 if (view->dual_page) {
 785                         x = view->spacing + ((page % 2 == ev_page_cache_get_dual_even_left (view->page_cache)) ? 0 : 1) * (max_width + view->spacing);
 786                         x = x + MAX (0, widget->allocation.width - (max_width * 2 + view->spacing * 3)) / 2;
 787                         if (page % 2 == ev_page_cache_get_dual_even_left (view->page_cache))
 788                                 x = x + (max_width - width - border->left - border->right);
 789                 } else {
 790                         x = view->spacing;
 791                         x = x + MAX (0, widget->allocation.width - (width + view->spacing * 2)) / 2;
 792                 }
 793
 794                 get_page_y_offset (view, page, view->scale, &y);
 795
 796                 page_area->x = x;
 797                 page_area->y = y;
 798         } else {
 799                 gint x, y;
 800                 if (view->dual_page) {
 801                         gint width_2, height_2;
 802                         gint max_width = width;
 803                         gint max_height = height;
 804                         GtkBorder overall_border;
 805                         gint other_page;
 806
 807                         other_page = (page % 2 == ev_page_cache_get_dual_even_left (view->page_cache)) ? page + 1: page - 1;
 808
 809                         /* First, we get the bounding box of the two pages */
 810                         if (other_page < ev_page_cache_get_n_pages (view->page_cache)
 811                             && (0 <= other_page)) {
 812                                 ev_page_cache_get_size (view->page_cache,
 813                                                         other_page,
 814                                                         view->rotation,
 815                                                         view->scale,
 816                                                         &width_2, &height_2);
 817                                 if (width_2 > width)
 818                                         max_width = width_2;
 819                                 if (height_2 > height)
 820                                         max_height = height_2;
 821                         }
 822                         compute_border (view, max_width, max_height, &overall_border);
 823
 824                         /* Find the offsets */
 825                         x = view->spacing;
 826                         y = view->spacing;
 827
 828                         /* Adjust for being the left or right page */
 829                         if (page % 2 == ev_page_cache_get_dual_even_left (view->page_cache))
 830                                 x = x + max_width - width;
 831                         else
 832                                 x = x + (max_width + overall_border.left + overall_border.right) + view->spacing;
 833
 834                         y = y + (max_height - height)/2;
 835
 836                         /* Adjust for extra allocation */
 837                         x = x + MAX (0, widget->allocation.width -
 838                                      ((max_width + overall_border.left + overall_border.right) * 2 + view->spacing * 3))/2;
 839                         y = y + MAX (0, widget->allocation.height - (height + view->spacing * 2))/2;
 840                 } else {
 841                         x = view->spacing;
 842                         y = view->spacing;
 843
 844                         /* Adjust for extra allocation */
 845                         x = x + MAX (0, widget->allocation.width - (width + border->left + border->right + view->spacing * 2))/2;
 846                         y = y + MAX (0, widget->allocation.height - (height + border->top + border->bottom +  view->spacing * 2))/2;
 847                 }
 848
 849                 page_area->x = x;
 850                 page_area->y = y;
 851         }
 852
 853         return TRUE;
 854 }
 855
 856 static void
 857 view_point_to_doc_point (EvView *view,
 858                          GdkPoint *view_point,
 859                          GdkRectangle *page_area,
 860                          double  *doc_point_x,
 861                          double  *doc_point_y)
 862 {
 863         *doc_point_x = (double) (view_point->x - page_area->x) / view->scale;
 864         *doc_point_y = (double) (view_point->y - page_area->y) / view->scale;
 865 }
 866
 867 static void
 868 view_rect_to_doc_rect (EvView *view,
 869                        GdkRectangle *view_rect,
 870                        GdkRectangle *page_area,
 871                        EvRectangle  *doc_rect)
 872 {
 873         doc_rect->x1 = (double) (view_rect->x - page_area->x) / view->scale;
 874         doc_rect->y1 = (double) (view_rect->y - page_area->y) / view->scale;
 875         doc_rect->x2 = doc_rect->x1 + (double) view_rect->width / view->scale;
 876         doc_rect->y2 = doc_rect->y1 + (double) view_rect->height / view->scale;
 877 }
 878
 879 static gboolean
 880 doc_point_to_view_point (EvView       *view,
 881                          int           page,
 882                          EvPoint      *doc_point,
 883                          GdkPoint     *view_point)
 884 {
 885         GdkRectangle page_area;
 886         GtkBorder border;
 887         double x, y, view_x, view_y;
 888         int width, height;
 889
 890         ev_page_cache_get_size (view->page_cache, page,
 891                                 view->rotation,
 892                                 1.0,
 893                                 &width, &height);
 894
 895         if (view->rotation == 0) {
 896                 x = doc_point->x;
 897                 y = doc_point->y;
 898         } else if (view->rotation == 90) {
 899                 x = width - doc_point->y;
 900                 y = doc_point->x;
 901         } else if (view->rotation == 180) {
 902                 x = width - doc_point->x;
 903                 y = height - doc_point->y;
 904         } else if (view->rotation == 270) {
 905                 x = doc_point->y;
 906                 y = height - doc_point->x;
 907         } else {
 908                 g_assert_not_reached ();
 909         }
 910
 911         get_page_extents (view, page, &page_area, &border);
 912
 913         view_x = x * view->scale;
 914         view_y = y * view->scale;
 915         view_point->x = view_x + page_area.x;
 916         view_point->y = view_y + page_area.y;
 917
 918         return (view_x > 0 && view_x <= page_area.width &&
 919                 view_y > 0 && view_y <= page_area.height);
 920 }
 921
 922 static void
 923 doc_rect_to_view_rect (EvView       *view,
 924                        int           page,
 925                        EvRectangle  *doc_rect,
 926                        GdkRectangle *view_rect)
 927 {
 928         GdkRectangle page_area;
 929         GtkBorder border;
 930         double x, y, w, h;
 931         int width, height;
 932
 933         ev_page_cache_get_size (view->page_cache, page,
 934                                 view->rotation,
 935                                 1.0,
 936                                 &width, &height);
 937
 938         if (view->rotation == 0) {
 939                 x = doc_rect->x1;
 940                 y = doc_rect->y1;
 941                 w = doc_rect->x2 - doc_rect->x1;
 942                 h = doc_rect->y2 - doc_rect->y1;
 943         } else if (view->rotation == 90) {
 944                 x = width - doc_rect->y2;
 945                 y = doc_rect->x1;
 946                 w = doc_rect->y2 - doc_rect->y1;
 947                 h = doc_rect->x2 - doc_rect->x1;
 948         } else if (view->rotation == 180) {
 949                 x = width - doc_rect->x2;
 950                 y = height - doc_rect->y2;
 951                 w = doc_rect->x2 - doc_rect->x1;
 952                 h = doc_rect->y2 - doc_rect->y1;
 953         } else if (view->rotation == 270) {
 954                 x = doc_rect->y1;
 955                 y = height - doc_rect->x2;
 956                 w = doc_rect->y2 - doc_rect->y1;
 957                 h = doc_rect->x2 - doc_rect->x1;
 958         } else {
 959                 g_assert_not_reached ();
 960         }
 961
 962         get_page_extents (view, page, &page_area, &border);
 963
 964         view_rect->x = x * view->scale + page_area.x;
 965         view_rect->y = y * view->scale + page_area.y;
 966         view_rect->width = w * view->scale;
 967         view_rect->height = h * view->scale;
 968 }
 969
 970 static void
 971 find_page_at_location (EvView  *view,
 972                        gdouble  x,
 973                        gdouble  y,
 974                        gint    *page,
 975                        gint    *x_offset,
 976                        gint    *y_offset)
 977 {
 978         int i;
 979
 980         if (view->document == NULL)
 981                 return;
 982
 983         g_assert (page);
 984         g_assert (x_offset);
 985         g_assert (y_offset);
 986
 987         for (i = view->start_page; i <= view->end_page; i++) {
 988                 GdkRectangle page_area;
 989                 GtkBorder border;
 990
 991                 if (! get_page_extents (view, i, &page_area, &border))
 992                         continue;
 993
 994                 if ((x >= page_area.x + border.left) &&
 995                     (x < page_area.x + page_area.width - border.right) &&
 996                     (y >= page_area.y + border.top) &&
 997                     (y < page_area.y + page_area.height - border.bottom)) {
 998                         *page = i;
 999                         *x_offset = x - (page_area.x + border.left);
1000                         *y_offset = y - (page_area.y + border.top);
1001                         return;
1002                 }
1003         }
1004
1005         *page = -1;
1006 }
1007
1008 static gboolean
1009 location_in_text (EvView  *view,
1010                   gdouble  x,
1011                   gdouble  y)
1012 {
1013         GdkRegion *region;
1014         gint page = -1;
1015         gint x_offset = 0, y_offset = 0;
1016
1017         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1018
1019         if (page == -1)
1020                 return FALSE;
1021
1022         region = ev_pixbuf_cache_get_text_mapping (view->pixbuf_cache, page);
1023
1024         if (region)
1025                 return gdk_region_point_in (region, x_offset / view->scale, y_offset / view->scale);
1026         else
1027                 return FALSE;
1028 }
1029
1030 static int
1031 ev_view_get_width (EvView *view)
1032 {
1033         return GTK_WIDGET (view)->allocation.width;
1034 }
1035
1036 static int
1037 ev_view_get_height (EvView *view)
1038 {
1039         return GTK_WIDGET (view)->allocation.height;
1040 }
1041
1042 static gboolean
1043 location_in_selected_text (EvView  *view,
1044                            gdouble  x,
1045                            gdouble  y)
1046 {
1047         gint page = -1;
1048         gint x_offset = 0, y_offset = 0;
1049         EvViewSelection *selection;
1050         GList *l = NULL;
1051
1052         for (l = view->selection_info.selections; l != NULL; l = l->next) {
1053                 selection = (EvViewSelection *)l->data;
1054
1055                 find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1056
1057                 if (page != selection->page)
1058                         continue;
1059
1060                 if (selection->covered_region &&
1061                     gdk_region_point_in (selection->covered_region, x_offset, y_offset))
1062                         return TRUE;
1063         }
1064
1065         return FALSE;
1066 }
1067
1068 static gboolean
1069 get_doc_point_from_offset (EvView *view,
1070                            gint    page,
1071                            gint    x_offset,
1072                            gint    y_offset,
1073                            gint   *x_new,
1074                            gint   *y_new)
1075 {
1076         int width, height;
1077         double x, y;
1078
1079         ev_page_cache_get_size (view->page_cache, page,
1080                                 view->rotation,
1081                                 1.0,
1082                                 &width, &height);
1083
1084         x_offset = x_offset / view->scale;
1085         y_offset = y_offset / view->scale;
1086
1087         if (view->rotation == 0) {
1088                 x = x_offset;
1089                 y = y_offset;
1090         } else if (view->rotation == 90) {
1091                 x = y_offset;
1092                 y = width - x_offset;
1093         } else if (view->rotation == 180) {
1094                 x = width - x_offset;
1095                 y = height - y_offset;
1096         } else if (view->rotation == 270) {
1097                 x = height - y_offset;
1098                 y = x_offset;
1099         } else {
1100                 g_assert_not_reached ();
1101         }
1102
1103         *x_new = x;
1104         *y_new = y;
1105
1106         return TRUE;
1107 }
1108
1109 /*** Hyperref ***/
1110 static EvLink *
1111 ev_view_get_link_at_location (EvView  *view,
1112                               gdouble  x,
1113                               gdouble  y)
1114 {
1115         gint page = -1;
1116         gint x_offset = 0, y_offset = 0;
1117         gint x_new = 0, y_new = 0;
1118         GList *link_mapping;
1119
1120         if (!EV_IS_DOCUMENT_LINKS (view->document))
1121                 return NULL;
1122
1123         x += view->scroll_x;
1124         y += view->scroll_y;
1125
1126         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1127
1128         if (page == -1)
1129                 return NULL;
1130
1131
1132         if (get_doc_point_from_offset (view, page, x_offset,
1133                                        y_offset, &x_new, &y_new) == FALSE)
1134                 return NULL;
1135
1136         link_mapping = ev_pixbuf_cache_get_link_mapping (view->pixbuf_cache, page);
1137
1138         if (link_mapping)
1139                 return ev_link_mapping_find (link_mapping, x_new, y_new);
1140         else
1141                 return NULL;
1142 }
1143
1144 static void
1145 goto_fitr_dest (EvView *view, EvLinkDest *dest)
1146 {
1147         EvPoint doc_point;
1148         double zoom;
1149
1150         zoom = zoom_for_size_best_fit (ev_link_dest_get_right (dest) - ev_link_dest_get_left (dest),
1151                                        ev_link_dest_get_bottom (dest) - ev_link_dest_get_top (dest),
1152                                        ev_view_get_width (view),
1153                                        ev_view_get_height (view), 0, 0);
1154
1155         ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1156         ev_view_set_zoom (view, zoom, FALSE);
1157
1158         doc_point.x = ev_link_dest_get_left (dest);
1159         doc_point.y = ev_link_dest_get_top (dest);
1160
1161         view->current_page = ev_link_dest_get_page (dest);
1162         view->pending_point = doc_point;
1163         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1164
1165         gtk_widget_queue_resize (GTK_WIDGET (view));
1166 }
1167
1168 static void
1169 goto_fitv_dest (EvView *view, EvLinkDest *dest)
1170 {
1171         EvPoint doc_point;
1172         int doc_width, doc_height, page;
1173         double zoom;
1174
1175         page = ev_link_dest_get_page (dest);
1176         ev_page_cache_get_size (view->page_cache, page, 0, 1.0, &doc_width, &doc_height);
1177
1178         doc_point.x = ev_link_dest_get_left (dest);
1179         doc_point.y = 0;
1180
1181         zoom = zoom_for_size_fit_height (doc_width - doc_point.x , doc_height,
1182                                          ev_view_get_width (view),
1183                                          ev_view_get_height (view), 0);
1184
1185         ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1186         ev_view_set_zoom (view, zoom, FALSE);
1187
1188         view->current_page = page;
1189         view->pending_point = doc_point;
1190         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1191
1192         gtk_widget_queue_resize (GTK_WIDGET (view));
1193 }
1194
1195 static void
1196 goto_fith_dest (EvView *view, EvLinkDest *dest)
1197 {
1198         EvPoint doc_point;
1199         int doc_width, doc_height, page;
1200         double zoom;
1201
1202         page = ev_link_dest_get_page (dest);
1203         ev_page_cache_get_size (view->page_cache, page, 0, 1.0, &doc_width, &doc_height);
1204
1205         doc_point.x = 0;
1206         doc_point.y = ev_link_dest_get_top (dest);
1207
1208         zoom = zoom_for_size_fit_width (doc_width, ev_link_dest_get_top (dest),
1209                                         ev_view_get_width (view),
1210                                         ev_view_get_height (view), 0);
1211
1212         ev_view_set_sizing_mode (view, EV_SIZING_FIT_WIDTH);
1213         ev_view_set_zoom (view, zoom, FALSE);
1214
1215         view->current_page = page;
1216         view->pending_point = doc_point;
1217         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1218
1219         gtk_widget_queue_resize (GTK_WIDGET (view));
1220 }
1221
1222 static void
1223 goto_fit_dest (EvView *view, EvLinkDest *dest)
1224 {
1225         double zoom;
1226         int doc_width, doc_height;
1227         int page;
1228
1229         page = ev_link_dest_get_page (dest);
1230         ev_page_cache_get_size (view->page_cache, page, 0, 1.0, &doc_width, &doc_height);
1231
1232         zoom = zoom_for_size_best_fit (doc_width, doc_height, ev_view_get_width (view),
1233                                        ev_view_get_height (view), 0, 0);
1234
1235         ev_view_set_sizing_mode (view, EV_SIZING_BEST_FIT);
1236         ev_view_set_zoom (view, zoom, FALSE);
1237
1238         view->current_page = page;
1239         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1240
1241         gtk_widget_queue_resize (GTK_WIDGET (view));
1242 }
1243
1244 static void
1245 goto_xyz_dest (EvView *view, EvLinkDest *dest)
1246 {
1247         EvPoint doc_point;
1248         gint page;
1249         double zoom;
1250
1251         zoom = ev_link_dest_get_zoom (dest);
1252         page = ev_link_dest_get_page (dest);
1253
1254         if (zoom > 1) {
1255                 ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1256                 ev_view_set_zoom (view, zoom, FALSE);
1257         }
1258
1259         doc_point.x = ev_link_dest_get_left (dest);
1260         doc_point.y = ev_link_dest_get_top (dest);
1261
1262         view->current_page = page;
1263         view->pending_point = doc_point;
1264         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1265
1266         gtk_widget_queue_resize (GTK_WIDGET (view));
1267 }
1268
1269 static void
1270 goto_dest (EvView *view, EvLinkDest *dest)
1271 {
1272         EvLinkDestType type;
1273         int page, n_pages, current_page;
1274
1275         page = ev_link_dest_get_page (dest);
1276         n_pages = ev_page_cache_get_n_pages (view->page_cache);
1277
1278         if (page < 0 || page >= n_pages)
1279                 return;
1280
1281         current_page = view->current_page;
1282
1283         type = ev_link_dest_get_dest_type (dest);
1284
1285         switch (type) {
1286                 case EV_LINK_DEST_TYPE_PAGE:
1287                         ev_page_cache_set_current_page (view->page_cache, page);
1288                         break;
1289                 case EV_LINK_DEST_TYPE_FIT:
1290                         goto_fit_dest (view, dest);
1291                         break;
1292                 case EV_LINK_DEST_TYPE_FITH:
1293                         goto_fith_dest (view, dest);
1294                         break;
1295                 case EV_LINK_DEST_TYPE_FITV:
1296                         goto_fitv_dest (view, dest);
1297                         break;
1298                 case EV_LINK_DEST_TYPE_FITR:
1299                         goto_fitr_dest (view, dest);
1300                         break;
1301                 case EV_LINK_DEST_TYPE_XYZ:
1302                         goto_xyz_dest (view, dest);
1303                         break;
1304                 case EV_LINK_DEST_TYPE_PAGE_LABEL:
1305                         ev_page_cache_set_page_label (view->page_cache, ev_link_dest_get_page_label (dest));
1306                         break;
1307                 default:
1308                         g_assert_not_reached ();
1309         }
1310
1311         if (current_page != view->current_page)
1312                 ev_page_cache_set_current_page (view->page_cache,
1313                                                 view->current_page);
1314 }
1315
1316 void
1317 ev_view_goto_dest (EvView *view, EvLinkDest *dest)
1318 {
1319         EvLinkDestType type;
1320
1321         type = ev_link_dest_get_dest_type (dest);
1322
1323         if (type == EV_LINK_DEST_TYPE_NAMED) {
1324                 EvLinkDest  *dest2;
1325                 const gchar *named_dest;
1326
1327                 named_dest = ev_link_dest_get_named_dest (dest);
1328                 dest2 = ev_document_links_find_link_dest (EV_DOCUMENT_LINKS (view->document),
1329                                                           named_dest);
1330                 if (dest2) {
1331                         goto_dest (view, dest2);
1332                         g_object_unref (dest2);
1333                 }
1334
1335                 return;
1336         }
1337
1338         goto_dest (view, dest);
1339 }
1340
1341 void
1342 ev_view_handle_link (EvView *view, EvLink *link)
1343 {
1344         EvLinkAction    *action = NULL;
1345         EvLinkActionType type;
1346
1347         action = ev_link_get_action (link);
1348         if (!action)
1349                 return;
1350
1351         type = ev_link_action_get_action_type (action);
1352
1353         switch (type) {
1354                 case EV_LINK_ACTION_TYPE_GOTO_DEST: {
1355                         EvLinkDest *dest;
1356
1357                         dest = ev_link_action_get_dest (action);
1358                         ev_view_goto_dest (view, dest);
1359                 }
1360                         break;
1361                 case EV_LINK_ACTION_TYPE_GOTO_REMOTE:
1362                 case EV_LINK_ACTION_TYPE_EXTERNAL_URI:
1363                 case EV_LINK_ACTION_TYPE_LAUNCH:
1364                 case EV_LINK_ACTION_TYPE_NAMED:
1365                         g_signal_emit (view, signals[SIGNAL_EXTERNAL_LINK], 0, action);
1366                         break;
1367         }
1368 }
1369
1370 static gchar *
1371 page_label_from_dest (EvView *view, EvLinkDest *dest)
1372 {
1373         EvLinkDestType type;
1374         gchar *msg = NULL;
1375
1376         type = ev_link_dest_get_dest_type (dest);
1377
1378         switch (type) {
1379                 case EV_LINK_DEST_TYPE_NAMED: {
1380                         EvLinkDest  *dest2;
1381                         const gchar *named_dest;
1382
1383                         named_dest = ev_link_dest_get_named_dest (dest);
1384                         dest2 = ev_document_links_find_link_dest (EV_DOCUMENT_LINKS (view->document),
1385                                                                   named_dest);
1386                         if (dest2) {
1387                                 msg = ev_page_cache_get_page_label (view->page_cache,
1388                                                                     ev_link_dest_get_page (dest2));
1389                                 g_object_unref (dest2);
1390                         }
1391                 }
1392
1393                         break;
1394                 default:
1395                         msg = ev_page_cache_get_page_label (view->page_cache,
1396                                                             ev_link_dest_get_page (dest));
1397         }
1398
1399         return msg;
1400 }
1401
1402 static char *
1403 tip_from_action_named (EvLinkAction *action)
1404 {
1405         const gchar *name = ev_link_action_get_name (action);
1406
1407         if (g_ascii_strcasecmp (name, "FirstPage") == 0) {
1408                 return g_strdup (_("Go to first page"));
1409         } else if (g_ascii_strcasecmp (name, "PrevPage") == 0) {
1410                 return g_strdup (_("Go to previous page"));
1411         } else if (g_ascii_strcasecmp (name, "NextPage") == 0) {
1412                 return g_strdup (_("Go to next page"));
1413         } else if (g_ascii_strcasecmp (name, "LastPage") == 0) {
1414                 return g_strdup (_("Go to last page"));
1415         } else if (g_ascii_strcasecmp (name, "GoToPage") == 0) {
1416                 return g_strdup (_("Go to page"));
1417         } else if (g_ascii_strcasecmp (name, "Find") == 0) {
1418                 return g_strdup (_("Find"));
1419         }
1420
1421         return NULL;
1422 }
1423
1424 static char *
1425 tip_from_link (EvView *view, EvLink *link)
1426 {
1427         EvLinkAction *action;
1428         EvLinkActionType type;
1429         char *msg = NULL;
1430         char *page_label;
1431         const char *title;
1432
1433         action = ev_link_get_action (link);
1434         title = ev_link_get_title (link);
1435
1436         if (!action)
1437                 return title ? g_strdup (title) : NULL;
1438
1439         type = ev_link_action_get_action_type (action);
1440
1441         switch (type) {
1442                 case EV_LINK_ACTION_TYPE_GOTO_DEST:
1443                         page_label = page_label_from_dest (view,
1444                                                            ev_link_action_get_dest (action));
1445                         msg = g_strdup_printf (_("Go to page %s"), page_label);
1446                         g_free (page_label);
1447                         break;
1448                 case EV_LINK_ACTION_TYPE_GOTO_REMOTE:
1449                         if (title) {
1450                                 msg = g_strdup_printf (_("Go to %s on file “%s”"), title,
1451                                                        ev_link_action_get_filename (action));
1452                         } else {
1453                                 msg = g_strdup_printf (_("Go to file “%s”"),
1454                                                        ev_link_action_get_filename (action));
1455                         }
1456
1457                         break;
1458                 case EV_LINK_ACTION_TYPE_EXTERNAL_URI:
1459                         msg = g_strdup (ev_link_action_get_uri (action));
1460                         break;
1461                 case EV_LINK_ACTION_TYPE_LAUNCH:
1462                         msg = g_strdup_printf (_("Launch %s"),
1463                                                ev_link_action_get_filename (action));
1464                         break;
1465                 case EV_LINK_ACTION_TYPE_NAMED:
1466                         msg = tip_from_action_named (action);
1467                         break;
1468                 default:
1469                         if (title)
1470                                 msg = g_strdup (title);
1471                         break;
1472         }
1473
1474         return msg;
1475 }
1476
1477 static void
1478 handle_link_over_xy (EvView *view, gint x, gint y)
1479 {
1480         EvLink *link;
1481
1482         link = ev_view_get_link_at_location (view, x, y);
1483
1484         if (view->link_tooltip == NULL) {
1485                 view->link_tooltip = ev_tooltip_new (GTK_WIDGET (view));
1486         }
1487
1488         if (view->hovered_link != link) {
1489                 view->hovered_link = link;
1490                 ev_tooltip_deactivate (EV_TOOLTIP (view->link_tooltip));
1491         }
1492
1493         if (link) {
1494                 char *msg = tip_from_link (view, link);
1495
1496                 if (msg && g_utf8_validate (msg, -1, NULL)) {
1497                         EvTooltip *tooltip = EV_TOOLTIP (view->link_tooltip);
1498
1499                         ev_tooltip_set_position (tooltip, x, y);
1500                         ev_tooltip_set_text (tooltip, msg);
1501                         ev_tooltip_activate (tooltip);
1502                 }
1503                 g_free (msg);
1504
1505                 ev_view_set_cursor (view, EV_VIEW_CURSOR_LINK);
1506         } else if (location_in_text (view, x + view->scroll_x, y + view->scroll_y)) {
1507                 ev_view_set_cursor (view, EV_VIEW_CURSOR_IBEAM);
1508         } else {
1509                 ev_view_set_status (view, NULL);
1510                 if (view->cursor == EV_VIEW_CURSOR_LINK ||
1511                     view->cursor == EV_VIEW_CURSOR_IBEAM)
1512                         ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
1513         }
1514         return;
1515 }
1516
1517 /*** Images ***/
1518 static EvImage *
1519 ev_view_get_image_at_location (EvView  *view,
1520                                gdouble  x,
1521                                gdouble  y)
1522 {
1523         gint page = -1;
1524         gint x_offset = 0, y_offset = 0;
1525         gint x_new = 0, y_new = 0;
1526         GList *image_mapping;
1527
1528         if (!EV_IS_DOCUMENT_IMAGES (view->document))
1529                 return NULL;
1530
1531         x += view->scroll_x;
1532         y += view->scroll_y;
1533
1534         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1535
1536         if (page == -1)
1537                 return NULL;
1538
1539         if (get_doc_point_from_offset (view, page, x_offset,
1540                                        y_offset, &x_new, &y_new) == FALSE)
1541                 return NULL;
1542
1543         image_mapping = ev_pixbuf_cache_get_image_mapping (view->pixbuf_cache, page);
1544
1545         if (image_mapping)
1546                 return ev_image_mapping_find (image_mapping, x_new, y_new);
1547         else
1548                 return NULL;
1549 }
1550
1551 /*** GtkWidget implementation ***/
1552
1553 static void
1554 ev_view_size_request_continuous_dual_page (EvView         *view,
1555                                            GtkRequisition *requisition)
1556 {
1557         int max_width;
1558         gint n_pages;
1559         GtkBorder border;
1560
1561         ev_page_cache_get_max_width (view->page_cache, view->rotation,
1562                                      view->scale, &max_width);
1563         compute_border (view, max_width, max_width, &border);
1564
1565         n_pages = ev_page_cache_get_n_pages (view->page_cache) + 1;
1566
1567         requisition->width = (max_width + border.left + border.right) * 2 + (view->spacing * 3);
1568         get_page_y_offset (view, n_pages, view->scale, &requisition->height);
1569
1570         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
1571                 requisition->width = 1;
1572         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
1573                 requisition->width = 1;
1574                 /* FIXME: This could actually be set on one page docs or docs
1575                  * with a strange aspect ratio. */
1576                 /* requisition->height = 1;*/
1577         }
1578 }
1579
1580 static void
1581 ev_view_size_request_continuous (EvView         *view,
1582                                  GtkRequisition *requisition)
1583 {
1584         int max_width;
1585         int n_pages;
1586         GtkBorder border;
1587
1588
1589         ev_page_cache_get_max_width (view->page_cache, view->rotation,
1590                                      view->scale, &max_width);
1591         n_pages = ev_page_cache_get_n_pages (view->page_cache);
1592         compute_border (view, max_width, max_width, &border);
1593
1594         requisition->width = max_width + (view->spacing * 2) + border.left + border.right;
1595         get_page_y_offset (view, n_pages, view->scale, &requisition->height);
1596
1597         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
1598                 requisition->width = 1;
1599         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
1600                 requisition->width = 1;
1601                 /* FIXME: This could actually be set on one page docs or docs
1602                  * with a strange aspect ratio. */
1603                 /* requisition->height = 1;*/
1604         }
1605 }
1606
1607 static void
1608 ev_view_size_request_dual_page (EvView         *view,
1609                                 GtkRequisition *requisition)
1610 {
1611         GtkBorder border;
1612         gint width, height;
1613
1614         /* Find the largest of the two. */
1615         ev_page_cache_get_size (view->page_cache,
1616                                 view->current_page,
1617                                 view->rotation,
1618                                 view->scale,
1619                                 &width, &height);
1620         if (view->current_page + 1 < ev_page_cache_get_n_pages (view->page_cache)) {
1621                 gint width_2, height_2;
1622                 ev_page_cache_get_size (view->page_cache,
1623                                         view->current_page + 1,
1624                                         view->rotation,
1625                                         view->scale,
1626                                         &width_2, &height_2);
1627                 if (width_2 > width) {
1628                         width = width_2;
1629                         height = height_2;
1630                 }
1631         }
1632         compute_border (view, width, height, &border);
1633
1634         requisition->width = ((width + border.left + border.right) * 2) +
1635                 (view->spacing * 3);
1636         requisition->height = (height + border.top + border.bottom) +
1637                 (view->spacing * 2);
1638
1639         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
1640                 requisition->width = 1;
1641         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
1642                 requisition->width = 1;
1643                 requisition->height = 1;
1644         }
1645 }
1646
1647 static void
1648 ev_view_size_request_single_page (EvView         *view,
1649                                   GtkRequisition *requisition)
1650 {
1651         GtkBorder border;
1652         gint width, height;
1653
1654         ev_page_cache_get_size (view->page_cache,
1655                                 view->current_page,
1656                                 view->rotation,
1657                                 view->scale,
1658                                 &width, &height);
1659         compute_border (view, width, height, &border);
1660
1661         requisition->width = width + border.left + border.right + (2 * view->spacing);
1662         requisition->height = height + border.top + border.bottom + (2 * view->spacing);
1663
1664         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
1665                 requisition->width = 1;
1666                 requisition->height = height + border.top + border.bottom + (2 * view->spacing);
1667         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
1668                 requisition->width = 1;
1669                 requisition->height = 1;
1670         }
1671 }
1672
1673 static void
1674 ev_view_size_request (GtkWidget      *widget,
1675                       GtkRequisition *requisition)
1676 {
1677         EvView *view = EV_VIEW (widget);
1678
1679         if (view->document == NULL) {
1680                 requisition->width = 1;
1681                 requisition->height = 1;
1682                 return;
1683         }
1684
1685         if (view->presentation) {
1686                 requisition->width = 1;
1687                 requisition->height = 1;
1688                 return;
1689         }
1690
1691         if (view->continuous && view->dual_page)
1692                 ev_view_size_request_continuous_dual_page (view, requisition);
1693         else if (view->continuous)
1694                 ev_view_size_request_continuous (view, requisition);
1695         else if (view->dual_page)
1696                 ev_view_size_request_dual_page (view, requisition);
1697         else
1698                 ev_view_size_request_single_page (view, requisition);
1699 }
1700
1701 static void
1702 ev_view_size_allocate (GtkWidget      *widget,
1703                        GtkAllocation  *allocation)
1704 {
1705         EvView *view = EV_VIEW (widget);
1706
1707         GTK_WIDGET_CLASS (ev_view_parent_class)->size_allocate (widget, allocation);
1708
1709         if (view->sizing_mode == EV_SIZING_FIT_WIDTH ||
1710             view->sizing_mode == EV_SIZING_BEST_FIT) {
1711
1712                 g_signal_emit (view, signals[SIGNAL_ZOOM_INVALID], 0);
1713
1714                 ev_view_size_request (widget, &widget->requisition);
1715         }
1716
1717         view_set_adjustment_values (view, GTK_ORIENTATION_HORIZONTAL);
1718         view_set_adjustment_values (view, GTK_ORIENTATION_VERTICAL);
1719
1720         if (view->document)
1721                 view_update_range_and_current_page (view);
1722
1723         view->pending_scroll = SCROLL_TO_KEEP_POSITION;
1724         view->pending_resize = FALSE;
1725 }
1726
1727 static void
1728 ev_view_realize (GtkWidget *widget)
1729 {
1730         EvView *view = EV_VIEW (widget);
1731         GdkWindowAttr attributes;
1732
1733         GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
1734
1735         attributes.window_type = GDK_WINDOW_CHILD;
1736         attributes.wclass = GDK_INPUT_OUTPUT;
1737         attributes.visual = gtk_widget_get_visual (widget);
1738         attributes.colormap = gtk_widget_get_colormap (widget);
1739
1740         attributes.x = widget->allocation.x;
1741         attributes.y = widget->allocation.y;
1742         attributes.width = widget->allocation.width;
1743         attributes.height = widget->allocation.height;
1744         attributes.event_mask = GDK_EXPOSURE_MASK |
1745                                 GDK_BUTTON_PRESS_MASK |
1746                                 GDK_BUTTON_RELEASE_MASK |
1747                                 GDK_SCROLL_MASK |
1748                                 GDK_KEY_PRESS_MASK |
1749                                 GDK_POINTER_MOTION_MASK |
1750                                 GDK_POINTER_MOTION_HINT_MASK |
1751                                 GDK_ENTER_NOTIFY_MASK |
1752                                 GDK_LEAVE_NOTIFY_MASK;
1753
1754         widget->window = gdk_window_new (gtk_widget_get_parent_window (widget),
1755                                          &attributes,
1756                                          GDK_WA_X | GDK_WA_Y |
1757                                          GDK_WA_COLORMAP |
1758                                          GDK_WA_VISUAL);
1759         gdk_window_set_user_data (widget->window, widget);
1760         widget->style = gtk_style_attach (widget->style, widget->window);
1761
1762         if (view->presentation)
1763                 gdk_window_set_background (widget->window, &widget->style->black);
1764         else
1765                 gdk_window_set_background (widget->window, &widget->style->mid [GTK_STATE_NORMAL]);
1766 }
1767
1768 static gboolean
1769 ev_view_scroll_event (GtkWidget *widget, GdkEventScroll *event)
1770 {
1771         EvView *view = EV_VIEW (widget);
1772         guint state;
1773
1774         state = event->state & gtk_accelerator_get_default_mod_mask ();
1775
1776         if (state == GDK_CONTROL_MASK && view->presentation == FALSE) {
1777                 ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1778
1779                 if (event->direction == GDK_SCROLL_UP ||
1780                     event->direction == GDK_SCROLL_LEFT) {
1781                         if (ev_view_can_zoom_in (view)) {
1782                                 ev_view_zoom_in (view);
1783                         }
1784                 } else {
1785                         if (ev_view_can_zoom_out (view)) {
1786                                 ev_view_zoom_out (view);
1787                         }
1788                 }
1789
1790                 return TRUE;
1791         }
1792
1793         view->jump_to_find_result = FALSE;
1794         /* Shift+Wheel scrolls the in the perpendicular direction */
1795         if (state & GDK_SHIFT_MASK) {
1796                 if (event->direction == GDK_SCROLL_UP)
1797                         event->direction = GDK_SCROLL_LEFT;
1798                 if (event->direction == GDK_SCROLL_LEFT)
1799                         event->direction = GDK_SCROLL_UP;
1800                 if (event->direction == GDK_SCROLL_DOWN)
1801                         event->direction = GDK_SCROLL_RIGHT;
1802                 if (event->direction == GDK_SCROLL_RIGHT)
1803                         event->direction = GDK_SCROLL_DOWN;
1804
1805                 event->state &= ~GDK_SHIFT_MASK;
1806                 state &= ~GDK_SHIFT_MASK;
1807         }
1808
1809         if (state == 0 && view->presentation) {
1810                 switch (event->direction) {
1811                         case GDK_SCROLL_DOWN:
1812                         case GDK_SCROLL_RIGHT:
1813                                 ev_view_next_page (view);
1814                                 break;
1815                         case GDK_SCROLL_UP:
1816                         case GDK_SCROLL_LEFT:
1817                                 ev_view_previous_page (view);
1818                                 break;
1819                 }
1820
1821                 return TRUE;
1822         }
1823
1824         return FALSE;
1825 }
1826
1827 static EvViewSelection *
1828 find_selection_for_page (EvView *view,
1829                          gint    page)
1830 {
1831         GList *list;
1832
1833         for (list = view->selection_info.selections; list != NULL; list = list->next) {
1834                 EvViewSelection *selection;
1835
1836                 selection = (EvViewSelection *) list->data;
1837
1838                 if (selection->page == page)
1839                         return selection;
1840         }
1841
1842         return NULL;
1843 }
1844
1845 static void
1846 draw_end_presentation_page (EvView       *view,
1847                             GdkRectangle *page_area)
1848 {
1849         PangoLayout *layout;
1850         PangoFontDescription *font_desc;
1851         gchar *markup;
1852         const gchar *text = _("End of presentation. Press Escape to exit.");
1853
1854         if (view->presentation_state != EV_PRESENTATION_END)
1855                 return;
1856
1857         layout = gtk_widget_create_pango_layout (GTK_WIDGET (view), NULL);
1858         markup = g_strdup_printf ("<span foreground=\"white\">%s</span>", text);
1859         pango_layout_set_markup (layout, markup, -1);
1860         g_free (markup);
1861
1862         font_desc = pango_font_description_new ();
1863         pango_font_description_set_size (font_desc, 16 * PANGO_SCALE);
1864         pango_layout_set_font_description (layout, font_desc);
1865
1866         gtk_paint_layout (GTK_WIDGET (view)->style,
1867                           GTK_WIDGET (view)->window,
1868                           GTK_WIDGET_STATE (view),
1869                           FALSE,
1870                           page_area,
1871                           GTK_WIDGET (view),
1872                           NULL,
1873                           page_area->x + 15,
1874                           page_area->y + 15,
1875                           layout);
1876
1877         pango_font_description_free (font_desc);
1878         g_object_unref (layout);
1879 }
1880
1881 static gboolean
1882 ev_view_expose_event (GtkWidget      *widget,
1883                       GdkEventExpose *event)
1884 {
1885         EvView *view = EV_VIEW (widget);
1886         int i;
1887
1888         if (view->presentation) {
1889                 switch (view->presentation_state) {
1890                         case EV_PRESENTATION_END: {
1891                                 GdkRectangle area = {0};
1892
1893                                 area.width = widget->allocation.width;
1894                                 area.height = widget->allocation.height;
1895
1896                                 draw_end_presentation_page (view, &area);
1897                         }
1898                                 return FALSE;
1899                         case EV_PRESENTATION_BLACK:
1900                         case EV_PRESENTATION_WHITE:
1901                                 return FALSE;
1902                         case EV_PRESENTATION_NORMAL:
1903                         default:
1904                                 break;
1905                 }
1906         }
1907
1908         if (view->loading) {
1909                 GdkRectangle area = {0};
1910
1911                 area.width = widget->allocation.width;
1912                 area.height = widget->allocation.height;
1913
1914                 draw_loading_text (view,
1915                                    &area,
1916                                    &(event->area));
1917         }
1918
1919         if (view->document == NULL)
1920                 return FALSE;
1921
1922         for (i = view->start_page; i <= view->end_page; i++) {
1923                 GdkRectangle page_area;
1924                 GtkBorder border;
1925                 gboolean page_ready = TRUE;
1926
1927                 if (!get_page_extents (view, i, &page_area, &border))
1928                         continue;
1929
1930                 page_area.x -= view->scroll_x;
1931                 page_area.y -= view->scroll_y;
1932
1933                 draw_one_page (view, i, &page_area, &border, &(event->area), &page_ready);
1934
1935                 if (page_ready && EV_IS_DOCUMENT_FIND (view->document))
1936                         highlight_find_results (view, i);
1937         }
1938
1939         return FALSE;
1940 }
1941
1942 static gboolean
1943 ev_view_do_popup_menu (EvView *view,
1944                        gdouble x,
1945                        gdouble y)
1946 {
1947         EvLink  *link;
1948         EvImage *image;
1949
1950         image = ev_view_get_image_at_location (view, x, y);
1951         if (image) {
1952                 g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, image);
1953                 return TRUE;
1954         }
1955
1956         link = ev_view_get_link_at_location (view, x, y);
1957         if (link) {
1958                 g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, link);
1959                 return TRUE;
1960         }
1961
1962         g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, NULL);
1963
1964         return TRUE;
1965 }
1966
1967 static gboolean
1968 ev_view_popup_menu (GtkWidget *widget)
1969 {
1970         gint x, y;
1971
1972         gtk_widget_get_pointer (widget, &x, &y);
1973         return ev_view_do_popup_menu (EV_VIEW (widget), x, y);
1974 }
1975
1976 static gboolean
1977 ev_view_button_press_event (GtkWidget      *widget,
1978                             GdkEventButton *event)
1979 {
1980         EvView *view = EV_VIEW (widget);
1981
1982         if (!GTK_WIDGET_HAS_FOCUS (widget)) {
1983                 gtk_widget_grab_focus (widget);
1984         }
1985
1986         view->pressed_button = event->button;
1987         view->selection_info.in_drag = FALSE;
1988
1989         switch (event->button) {
1990                 case 1: {
1991                         EvImage *image;
1992
1993                         if (view->selection_info.selections) {
1994                                 if (location_in_selected_text (view,
1995                                                                event->x + view->scroll_x,
1996                                                                event->y + view->scroll_y)) {
1997                                         view->selection_info.in_drag = TRUE;
1998                                 } else {
1999                                         clear_selection (view);
2000                                 }
2001
2002                                 gtk_widget_queue_draw (widget);
2003                         } else if ((image = ev_view_get_image_at_location (view, event->x, event->y))) {
2004                                 if (view->image_dnd_info.image)
2005                                         g_object_unref (view->image_dnd_info.image);
2006                                 view->image_dnd_info.image = g_object_ref (image);
2007                                 view->image_dnd_info.in_drag = TRUE;
2008
2009                                 view->image_dnd_info.start.x = event->x + view->scroll_x;
2010                                 view->image_dnd_info.start.y = event->y + view->scroll_y;
2011                         }
2012
2013                         view->selection_info.start.x = event->x + view->scroll_x;
2014                         view->selection_info.start.y = event->y + view->scroll_y;
2015                 }
2016                         return TRUE;
2017                 case 2:
2018                         /* use root coordinates as reference point because
2019                          * scrolling changes window relative coordinates */
2020                         view->drag_info.start.x = event->x_root;
2021                         view->drag_info.start.y = event->y_root;
2022                         view->drag_info.hadj = gtk_adjustment_get_value (view->hadjustment);
2023                         view->drag_info.vadj = gtk_adjustment_get_value (view->vadjustment);
2024
2025                         ev_view_set_cursor (view, EV_VIEW_CURSOR_DRAG);
2026
2027                         return TRUE;
2028                 case 3:
2029                         return ev_view_do_popup_menu (view, event->x, event->y);
2030         }
2031
2032         return FALSE;
2033 }
2034
2035 /*** Drag and Drop ***/
2036 static void
2037 ev_view_drag_data_get (GtkWidget        *widget,
2038                        GdkDragContext   *context,
2039                        GtkSelectionData *selection_data,
2040                        guint             info,
2041                        guint             time)
2042 {
2043         EvView *view = EV_VIEW (widget);
2044
2045         switch (info) {
2046                 case TARGET_DND_TEXT:
2047                         if (view->selection_info.selections &&
2048                             ev_document_can_get_text (view->document)) {
2049                                 gchar *text;
2050
2051                                 text = get_selected_text (view);
2052
2053                                 gtk_selection_data_set_text (selection_data,
2054                                                              text,
2055                                                              strlen (text));
2056
2057                                 g_free (text);
2058                         }
2059                         break;
2060                 case TARGET_DND_IMAGE:
2061                         if (view->image_dnd_info.image) {
2062                                 GdkPixbuf *pixbuf;
2063
2064                                 pixbuf = ev_image_get_pixbuf (view->image_dnd_info.image);
2065                                 gtk_selection_data_set_pixbuf (selection_data, pixbuf);
2066                         }
2067                         break;
2068                 case TARGET_DND_URI:
2069                         if (view->image_dnd_info.image) {
2070                                 const gchar *tmp_uri;
2071                                 gchar      **uris;
2072
2073                                 tmp_uri = ev_image_save_tmp (view->image_dnd_info.image);
2074
2075                                 uris = g_new0 (gchar *, 2);
2076                                 uris[0] = (gchar *)tmp_uri;
2077
2078                                 gtk_selection_data_set_uris (selection_data, uris);
2079
2080                                 /* g_free instead of g_strfreev since tmp_uri is const */
2081                                 g_free (uris);
2082                         }
2083         }
2084 }
2085
2086 static gboolean
2087 ev_view_drag_motion (GtkWidget      *widget,
2088                      GdkDragContext *context,
2089                      gint            x,
2090                      gint            y,
2091                      guint           time)
2092 {
2093         if (gtk_drag_get_source_widget (context) == widget)
2094                 gdk_drag_status (context, 0, time);
2095         else
2096                 gdk_drag_status (context, context->suggested_action, time);
2097
2098         return TRUE;
2099 }
2100
2101 static void
2102 ev_view_drag_data_received (GtkWidget          *widget,
2103                             GdkDragContext     *context,
2104                             gint                x,
2105                             gint                y,
2106                             GtkSelectionData   *selection_data,
2107                             guint               info,
2108                             guint               time)
2109 {
2110         gchar  **uris;
2111         gint     i = 0;
2112         GSList  *uri_list = NULL;
2113
2114         uris = gtk_selection_data_get_uris (selection_data);
2115         if (!uris) {
2116                 gtk_drag_finish (context, FALSE, FALSE, time);
2117                 return;
2118         }
2119
2120         for (i = 0; uris[i]; i++) {
2121                 uri_list = g_slist_prepend (uri_list, (gpointer) uris[i]);
2122         }
2123
2124         ev_application_open_uri_list (EV_APP, uri_list,
2125                                       gtk_widget_get_screen (widget),
2126                                       0);
2127         gtk_drag_finish (context, TRUE, FALSE, time);
2128
2129         g_strfreev (uris);
2130         g_slist_free (uri_list);
2131 }
2132
2133
2134 static gboolean
2135 selection_update_idle_cb (EvView *view)
2136 {
2137         compute_selections (view, &view->selection_info.start, &view->motion);
2138         view->selection_update_id = 0;
2139         return FALSE;
2140 }
2141
2142 static gboolean
2143 selection_scroll_timeout_cb (EvView *view)
2144 {
2145         gint x, y, shift = 0;
2146         GtkWidget *widget = GTK_WIDGET (view);
2147
2148         gtk_widget_get_pointer (widget, &x, &y);
2149
2150         if (y > widget->allocation.height) {
2151                 shift = (y - widget->allocation.height) / 2;
2152         } else if (y < 0) {
2153                 shift = y / 2;
2154         }
2155
2156         if (shift)
2157                 gtk_adjustment_set_value (view->vadjustment,
2158                                           CLAMP (view->vadjustment->value + shift,
2159                                           view->vadjustment->lower,
2160                                           view->vadjustment->upper -
2161                                           view->vadjustment->page_size));
2162
2163         if (x > widget->allocation.width) {
2164                 shift = (x - widget->allocation.width) / 2;
2165         } else if (x < 0) {
2166                 shift = x / 2;
2167         }
2168
2169         if (shift)
2170                 gtk_adjustment_set_value (view->hadjustment,
2171                                           CLAMP (view->hadjustment->value + shift,
2172                                           view->hadjustment->lower,
2173                                           view->hadjustment->upper -
2174                                           view->hadjustment->page_size));
2175
2176         return TRUE;
2177 }
2178
2179 static gboolean
2180 ev_view_motion_notify_event (GtkWidget      *widget,
2181                              GdkEventMotion *event)
2182 {
2183         EvView *view = EV_VIEW (widget);
2184         gint x, y;
2185
2186         if (!view->document)
2187                 return FALSE;
2188
2189         if (event->is_hint || event->window != widget->window) {
2190             gtk_widget_get_pointer (widget, &x, &y);
2191         } else {
2192             x = event->x;
2193             y = event->y;
2194         }
2195
2196         if (view->selection_info.in_drag) {
2197                 if (gtk_drag_check_threshold (widget,
2198                                               view->selection_info.start.x,
2199                                               view->selection_info.start.y,
2200                                               x, y)) {
2201                         GtkTargetList *target_list = gtk_target_list_new (NULL, 0);
2202
2203                         gtk_target_list_add_text_targets (target_list, TARGET_DND_TEXT);
2204
2205                         gtk_drag_begin (widget, target_list,
2206                                         GDK_ACTION_COPY,
2207                                         1, (GdkEvent *)event);
2208
2209                         view->selection_info.in_drag = FALSE;
2210
2211                         gtk_target_list_unref (target_list);
2212
2213                         return TRUE;
2214                 }
2215         } else if (view->image_dnd_info.in_drag) {
2216                 if (gtk_drag_check_threshold (widget,
2217                                               view->selection_info.start.x,
2218                                               view->selection_info.start.y,
2219                                               x, y)) {
2220                         GtkTargetList *target_list = gtk_target_list_new (NULL, 0);
2221
2222                         gtk_target_list_add_uri_targets (target_list, TARGET_DND_URI);
2223                         gtk_target_list_add_image_targets (target_list, TARGET_DND_IMAGE, TRUE);
2224
2225                         gtk_drag_begin (widget, target_list,
2226                                         GDK_ACTION_COPY,
2227                                         1, (GdkEvent *)event);
2228
2229                         view->image_dnd_info.in_drag = FALSE;
2230
2231                         gtk_target_list_unref (target_list);
2232
2233                         return TRUE;
2234                 }
2235         }
2236
2237         /* For the Evince 0.4.x release, we limit selection to un-rotated
2238          * documents only.
2239          */
2240         if (view->pressed_button == 1 && view->rotation == 0) {
2241
2242                 /* Schedule timeout to scroll during selection and additionally
2243                  * scroll once to allow arbitrary speed. */
2244                 if (!view->selection_scroll_id)
2245                     view->selection_scroll_id = g_timeout_add (SCROLL_TIME, (GSourceFunc)selection_scroll_timeout_cb, view);
2246                 else
2247                     selection_scroll_timeout_cb (view);
2248
2249                 view->selection_info.in_selection = TRUE;
2250                 view->motion.x = x + view->scroll_x;
2251                 view->motion.y = y + view->scroll_y;
2252
2253                 /* Queue an idle to handle the motion.  We do this because
2254                  * handling any selection events in the motion could be slower
2255                  * than new motion events reach us.  We always put it in the
2256                  * idle to make sure we catch up and don't visibly lag the
2257                  * mouse. */
2258                 if (!view->selection_update_id)
2259                         view->selection_update_id = g_idle_add ((GSourceFunc)selection_update_idle_cb, view);
2260
2261                 return TRUE;
2262         } else if (view->pressed_button == 2) {
2263                 if (!view->drag_info.in_drag) {
2264                         gboolean start;
2265
2266                         start = gtk_drag_check_threshold (widget,
2267                                                           view->drag_info.start.x,
2268                                                           view->drag_info.start.y,
2269                                                           event->x_root,
2270                                                           event->y_root);
2271                         view->drag_info.in_drag = start;
2272                 }
2273
2274                 if (view->drag_info.in_drag) {
2275                         int dx, dy;
2276                         gdouble dhadj_value, dvadj_value;
2277
2278                         dx = event->x_root - view->drag_info.start.x;
2279                         dy = event->y_root - view->drag_info.start.y;
2280
2281                         dhadj_value = view->hadjustment->page_size *
2282                                       (gdouble)dx / widget->allocation.width;
2283                         dvadj_value = view->vadjustment->page_size *
2284                                       (gdouble)dy / widget->allocation.height;
2285
2286                         /* clamp scrolling to visible area */
2287                         gtk_adjustment_set_value (view->hadjustment,
2288                                                   MIN(view->drag_info.hadj - dhadj_value,
2289                                                       view->hadjustment->upper -
2290                                                       view->hadjustment->page_size));
2291                         gtk_adjustment_set_value (view->vadjustment,
2292                                                   MIN(view->drag_info.vadj - dvadj_value,
2293                                                       view->vadjustment->upper -
2294                                                       view->vadjustment->page_size));
2295
2296                         return TRUE;
2297                 }
2298         } else if (view->pressed_button <= 0) {
2299                 handle_link_over_xy (view, x, y);
2300                 return TRUE;
2301         }
2302
2303         return FALSE;
2304 }
2305
2306 static gboolean
2307 ev_view_button_release_event (GtkWidget      *widget,
2308                               GdkEventButton *event)
2309 {
2310         EvView *view = EV_VIEW (widget);
2311         EvLink *link;
2312
2313         if (view->pressed_button == 2) {
2314                 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
2315         }
2316
2317         if (view->document && view->pressed_button == 1) {
2318                 link = ev_view_get_link_at_location (view, event->x, event->y);
2319         } else {
2320                 link = NULL;
2321         }
2322
2323         view->pressed_button = -1;
2324         view->drag_info.in_drag = FALSE;
2325         view->image_dnd_info.in_drag = FALSE;
2326
2327         if (view->selection_scroll_id) {
2328             g_source_remove (view->selection_scroll_id);
2329             view->selection_scroll_id = 0;
2330         }
2331         if (view->selection_update_id) {
2332             g_source_remove (view->selection_update_id);
2333             view->selection_update_id = 0;
2334         }
2335
2336         if (view->selection_info.selections) {
2337                 ev_view_update_primary_selection (view);
2338
2339                 if (view->selection_info.in_drag) {
2340                         clear_selection (view);
2341                         gtk_widget_queue_draw (widget);
2342                 }
2343
2344                 view->selection_info.in_drag = FALSE;
2345         } else if (link) {
2346                 ev_view_handle_link (view, link);
2347         } else if (view->presentation) {
2348                 switch (event->button) {
2349                         case 1:
2350                                 ev_view_next_page (view);
2351                                 return TRUE;
2352                         case 3:
2353                                 ev_view_previous_page (view);
2354                                 return TRUE;
2355                 }
2356         }
2357
2358         return FALSE;
2359 }
2360
2361 /* Goto Window */
2362 /* Cut and paste from gtkwindow.c */
2363 static void
2364 send_focus_change (GtkWidget *widget,
2365                    gboolean   in)
2366 {
2367         GdkEvent *fevent = gdk_event_new (GDK_FOCUS_CHANGE);
2368
2369         g_object_ref (widget);
2370
2371         if (in)
2372                 GTK_WIDGET_SET_FLAGS (widget, GTK_HAS_FOCUS);
2373         else
2374                 GTK_WIDGET_UNSET_FLAGS (widget, GTK_HAS_FOCUS);
2375
2376         fevent->focus_change.type = GDK_FOCUS_CHANGE;
2377         fevent->focus_change.window = g_object_ref (widget->window);
2378         fevent->focus_change.in = in;
2379
2380         gtk_widget_event (widget, fevent);
2381
2382         g_object_notify (G_OBJECT (widget), "has-focus");
2383
2384         g_object_unref (widget);
2385         gdk_event_free (fevent);
2386 }
2387
2388 static void
2389 ev_view_goto_window_hide (EvView *view)
2390 {
2391         /* send focus-in event */
2392         send_focus_change (view->goto_entry, FALSE);
2393         gtk_widget_hide (view->goto_window);
2394         gtk_entry_set_text (GTK_ENTRY (view->goto_entry), "");
2395 }
2396
2397 static gboolean
2398 ev_view_goto_window_delete_event (GtkWidget   *widget,
2399                                   GdkEventAny *event,
2400                                   EvView      *view)
2401 {
2402         ev_view_goto_window_hide (view);
2403
2404         return TRUE;
2405 }
2406
2407 static gboolean
2408 key_is_numeric (guint keyval)
2409 {
2410         return ((keyval >= GDK_0 && keyval <= GDK_9) ||
2411                 (keyval >= GDK_KP_0 && keyval <= GDK_KP_9));
2412 }
2413
2414 static gboolean
2415 ev_view_goto_window_key_press_event (GtkWidget   *widget,
2416                                      GdkEventKey *event,
2417                                      EvView      *view)
2418 {
2419         switch (event->keyval) {
2420                 case GDK_Escape:
2421                 case GDK_Tab:
2422                 case GDK_KP_Tab:
2423                 case GDK_ISO_Left_Tab:
2424                         ev_view_goto_window_hide (view);
2425                         return TRUE;
2426                 case GDK_Return:
2427                 case GDK_KP_Enter:
2428                 case GDK_ISO_Enter:
2429                         return FALSE;
2430                 default:
2431                         if (!key_is_numeric (event->keyval))
2432                                 return TRUE;
2433         }
2434
2435         return FALSE;
2436 }
2437
2438 static gboolean
2439 ev_view_goto_window_button_press_event (GtkWidget      *widget,
2440                                         GdkEventButton *event,
2441                                         EvView         *view)
2442 {
2443         ev_view_goto_window_hide (view);
2444
2445         return TRUE;
2446 }
2447
2448 static void
2449 ev_view_goto_entry_activate (GtkEntry *entry,
2450                              EvView   *view)
2451 {
2452         const gchar *text;
2453         gint         page;
2454
2455         text = gtk_entry_get_text (entry);
2456         page = atoi (text) - 1;
2457
2458         ev_view_goto_window_hide (view);
2459
2460         if (page >= 0 &&
2461             page < ev_page_cache_get_n_pages (view->page_cache))
2462                 ev_page_cache_set_current_page (view->page_cache, page);
2463 }
2464
2465 static void
2466 ev_view_goto_window_create (EvView *view)
2467 {
2468         GtkWidget *frame, *hbox, *toplevel, *label;
2469
2470         toplevel = gtk_widget_get_toplevel (GTK_WIDGET (view));
2471
2472         if (view->goto_window) {
2473                 if (GTK_WINDOW (toplevel)->group)
2474                         gtk_window_group_add_window (GTK_WINDOW (toplevel)->group,
2475                                                      GTK_WINDOW (view->goto_window));
2476                 else if (GTK_WINDOW (view->goto_window)->group)
2477                         gtk_window_group_remove_window (GTK_WINDOW (view->goto_window)->group,
2478                                                         GTK_WINDOW (view->goto_window));
2479                 return;
2480         }
2481
2482         view->goto_window = gtk_window_new (GTK_WINDOW_POPUP);
2483
2484         if (GTK_WINDOW (toplevel)->group)
2485                 gtk_window_group_add_window (GTK_WINDOW (toplevel)->group,
2486                                              GTK_WINDOW (view->goto_window));
2487
2488         gtk_window_set_modal (GTK_WINDOW (view->goto_window), TRUE);
2489
2490         g_signal_connect (view->goto_window, "delete_event",
2491                           G_CALLBACK (ev_view_goto_window_delete_event),
2492                           view);
2493         g_signal_connect (view->goto_window, "key_press_event",
2494                           G_CALLBACK (ev_view_goto_window_key_press_event),
2495                           view);
2496         g_signal_connect (view->goto_window, "button_press_event",
2497                           G_CALLBACK (ev_view_goto_window_button_press_event),
2498                           view);
2499
2500         frame = gtk_frame_new (NULL);
2501         gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_ETCHED_IN);
2502         gtk_container_add (GTK_CONTAINER (view->goto_window), frame);
2503         gtk_widget_show (frame);
2504
2505         hbox = gtk_hbox_new (FALSE, 0);
2506         gtk_container_set_border_width (GTK_CONTAINER (hbox), 3);
2507         gtk_container_add (GTK_CONTAINER (frame), hbox);
2508         gtk_widget_show (hbox);
2509
2510         label = gtk_label_new(_("Jump to page:"));
2511         gtk_box_pack_start (GTK_BOX (hbox), label, TRUE, TRUE, 3);
2512         gtk_widget_show (label);
2513         gtk_widget_realize (label);
2514
2515         view->goto_entry = gtk_entry_new ();
2516         g_signal_connect (view->goto_entry, "activate",
2517                           G_CALLBACK (ev_view_goto_entry_activate),
2518                           view);
2519         gtk_box_pack_start_defaults (GTK_BOX (hbox), view->goto_entry);
2520         gtk_widget_show (view->goto_entry);
2521         gtk_widget_realize (view->goto_entry);
2522 }
2523
2524 static void
2525 ev_view_goto_entry_grab_focus (EvView *view)
2526 {
2527         GtkWidgetClass *entry_parent_class;
2528
2529         entry_parent_class = g_type_class_peek_parent (GTK_ENTRY_GET_CLASS (view->goto_entry));
2530         (entry_parent_class->grab_focus) (view->goto_entry);
2531
2532         send_focus_change (view->goto_entry, TRUE);
2533 }
2534
2535 static void
2536 ev_view_goto_window_send_key_event (EvView   *view,
2537                                     GdkEvent *event)
2538 {
2539         GdkEventKey *new_event;
2540         GdkScreen   *screen;
2541
2542         /* Move goto window off screen */
2543         screen = gtk_widget_get_screen (GTK_WIDGET (view));
2544         gtk_window_move (GTK_WINDOW (view->goto_window),
2545                          gdk_screen_get_width (screen) + 1,
2546                          gdk_screen_get_height (screen) + 1);
2547         gtk_widget_show (view->goto_window);
2548
2549         new_event = (GdkEventKey *) gdk_event_copy (event);
2550         g_object_unref (new_event->window);
2551         new_event->window = g_object_ref (view->goto_window->window);
2552         gtk_widget_realize (view->goto_window);
2553
2554         gtk_widget_event (view->goto_window, (GdkEvent *)new_event);
2555         gdk_event_free ((GdkEvent *)new_event);
2556         gtk_widget_hide (view->goto_window);
2557 }
2558
2559 static gboolean
2560 ev_view_key_press_event (GtkWidget   *widget,
2561                          GdkEventKey *event)
2562 {
2563         EvView *view = EV_VIEW (widget);
2564         EvPresentationState current;
2565
2566         if (!view->presentation ||
2567             view->presentation_state == EV_PRESENTATION_END)
2568                 return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
2569
2570
2571         current = view->presentation_state;
2572
2573         switch (event->keyval) {
2574                 case GDK_b:
2575                 case GDK_B:
2576                         view->presentation_state =
2577                                 (view->presentation_state == EV_PRESENTATION_BLACK) ?
2578                                 EV_PRESENTATION_NORMAL : EV_PRESENTATION_BLACK;
2579                         break;
2580                 case GDK_w:
2581                 case GDK_W:
2582                         view->presentation_state =
2583                                 (view->presentation_state == EV_PRESENTATION_WHITE) ?
2584                                 EV_PRESENTATION_NORMAL : EV_PRESENTATION_WHITE;
2585                         break;
2586                 default:
2587                         if (view->presentation_state == EV_PRESENTATION_BLACK ||
2588                             view->presentation_state == EV_PRESENTATION_WHITE) {
2589                                 view->presentation_state = EV_PRESENTATION_NORMAL;
2590                         }
2591         }
2592
2593         if (current == view->presentation_state) {
2594                 if (ev_page_cache_get_n_pages (view->page_cache) > 1 &&
2595                     key_is_numeric (event->keyval)) {
2596                         gint x, y;
2597
2598                         ev_view_goto_window_create (view);
2599                         ev_view_goto_window_send_key_event (view, (GdkEvent *)event);
2600                         gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
2601                         gtk_window_move (GTK_WINDOW (view->goto_window), x, y);
2602                         gtk_widget_show (view->goto_window);
2603                         ev_view_goto_entry_grab_focus (view);
2604
2605                         return TRUE;
2606                 }
2607
2608                 return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
2609         }
2610
2611         switch (view->presentation_state) {
2612                 case EV_PRESENTATION_NORMAL:
2613                 case EV_PRESENTATION_BLACK:
2614                         gdk_window_set_background (widget->window,
2615                                                    &widget->style->black);
2616                         break;
2617                 case EV_PRESENTATION_WHITE:
2618                         gdk_window_set_background (widget->window,
2619                                                    &widget->style->white);
2620                         break;
2621                 default:
2622                         return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
2623         }
2624
2625         gtk_widget_queue_draw (widget);
2626         return TRUE;
2627 }
2628
2629 static gint
2630 ev_view_focus_in (GtkWidget     *widget,
2631                   GdkEventFocus *event)
2632 {
2633         if (EV_VIEW (widget)->pixbuf_cache)
2634                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
2635         gtk_widget_queue_draw (widget);
2636
2637         return FALSE;
2638 }
2639
2640 static gint
2641 ev_view_focus_out (GtkWidget     *widget,
2642                      GdkEventFocus *event)
2643 {
2644         if (EV_VIEW (widget)->goto_window)
2645                 ev_view_goto_window_hide (EV_VIEW (widget));
2646
2647         if (EV_VIEW (widget)->pixbuf_cache)
2648                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
2649         gtk_widget_queue_draw (widget);
2650
2651         return FALSE;
2652 }
2653
2654 static gboolean
2655 ev_view_leave_notify_event (GtkWidget *widget, GdkEventCrossing   *event)
2656 {
2657         EvView *view = EV_VIEW (widget);
2658
2659         ev_view_set_status (view, NULL);
2660
2661         if (view->cursor == EV_VIEW_CURSOR_LINK ||
2662             view->cursor == EV_VIEW_CURSOR_IBEAM)
2663                 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
2664
2665         if (view->link_tooltip) {
2666                 view->hovered_link = NULL;
2667                 ev_tooltip_deactivate (EV_TOOLTIP (view->link_tooltip));
2668         }
2669
2670         return FALSE;
2671 }
2672
2673 static gboolean
2674 ev_view_enter_notify_event (GtkWidget *widget, GdkEventCrossing   *event)
2675 {
2676         EvView *view = EV_VIEW (widget);
2677
2678         handle_link_over_xy (view, event->x, event->y);
2679
2680         return FALSE;
2681 }
2682
2683 static void
2684 ev_view_style_set (GtkWidget *widget,
2685                    GtkStyle  *old_style)
2686 {
2687         if (EV_VIEW (widget)->pixbuf_cache)
2688                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
2689
2690         GTK_WIDGET_CLASS (ev_view_parent_class)->style_set (widget, old_style);
2691 }
2692
2693 /*** Drawing ***/
2694
2695 static guint32
2696 ev_gdk_color_to_rgb (const GdkColor *color)
2697 {
2698   guint32 result;
2699   result = (0xff0000 | (color->red & 0xff00));
2700   result <<= 8;
2701   result |= ((color->green & 0xff00) | (color->blue >> 8));
2702   return result;
2703 }
2704
2705 static void
2706 draw_rubberband (GtkWidget *widget, GdkWindow *window,
2707                  const GdkRectangle *rect, guchar alpha)
2708 {
2709         GdkGC *gc;
2710         GdkPixbuf *pixbuf;
2711         GdkColor *fill_color_gdk;
2712         guint fill_color;
2713
2714         fill_color_gdk = gdk_color_copy (&GTK_WIDGET (widget)->style->base[GTK_STATE_SELECTED]);
2715         fill_color = ev_gdk_color_to_rgb (fill_color_gdk) << 8 | alpha;
2716
2717         pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE, 8,
2718                                  rect->width, rect->height);
2719         gdk_pixbuf_fill (pixbuf, fill_color);
2720
2721         gdk_draw_pixbuf (window, NULL, pixbuf,
2722                          0, 0,
2723                          rect->x - EV_VIEW (widget)->scroll_x, rect->y - EV_VIEW (widget)->scroll_y,
2724                          rect->width, rect->height,
2725                          GDK_RGB_DITHER_NONE,
2726                          0, 0);
2727
2728         g_object_unref (pixbuf);
2729
2730         gc = gdk_gc_new (window);
2731         gdk_gc_set_rgb_fg_color (gc, fill_color_gdk);
2732         gdk_draw_rectangle (window, gc, FALSE,
2733                             rect->x - EV_VIEW (widget)->scroll_x, rect->y - EV_VIEW (widget)->scroll_y,
2734                             rect->width - 1,
2735                             rect->height - 1);
2736         g_object_unref (gc);
2737
2738         gdk_color_free (fill_color_gdk);
2739 }
2740
2741
2742 static void
2743 highlight_find_results (EvView *view, int page)
2744 {
2745         EvDocumentFind *find;
2746         int i, results = 0;
2747
2748         g_return_if_fail (EV_IS_DOCUMENT_FIND (view->document));
2749
2750         find = EV_DOCUMENT_FIND (view->document);
2751
2752         results = ev_document_find_get_n_results (find, page);
2753
2754         for (i = 0; i < results; i++) {
2755                 EvRectangle rectangle;
2756                 GdkRectangle view_rectangle;
2757                 guchar alpha;
2758
2759                 if (i == view->find_result && page == view->current_page) {
2760                         alpha = 0x90;
2761                 } else {
2762                         alpha = 0x20;
2763                 }
2764
2765                 ev_document_find_get_result (find, page, i, &rectangle);
2766                 doc_rect_to_view_rect (view, page, &rectangle, &view_rectangle);
2767                 draw_rubberband (GTK_WIDGET (view), GTK_WIDGET(view)->window,
2768                                  &view_rectangle, alpha);
2769         }
2770 }
2771
2772 static void
2773 draw_loading_text (EvView       *view,
2774                    GdkRectangle *page_area,
2775                    GdkRectangle *expose_area)
2776 {
2777         const char *loading_text;
2778         PangoLayout *layout;
2779         PangoFontDescription *font_desc;
2780         PangoRectangle logical_rect;
2781         double real_scale;
2782         int target_width;
2783
2784         /* Don't annoy users with loading messages during presentations.
2785          * FIXME: Temporary "workaround" for
2786          * http://bugzilla.gnome.org/show_bug.cgi?id=320352 */
2787         if (view->presentation)
2788                 return;
2789
2790         loading_text = _("Loading...");
2791
2792         ev_document_fc_mutex_lock ();
2793
2794         layout = gtk_widget_create_pango_layout (GTK_WIDGET (view), loading_text);
2795
2796         font_desc = pango_font_description_new ();
2797
2798
2799         /* We set the font to be 10 points, get the size, and scale appropriately */
2800         pango_font_description_set_size (font_desc, 10 * PANGO_SCALE);
2801         pango_layout_set_font_description (layout, font_desc);
2802         pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
2803
2804         /* Make sure we fit the middle of the page */
2805         target_width = MAX (page_area->width / 2, 1);
2806         real_scale = ((double)target_width / (double) logical_rect.width) * (PANGO_SCALE * 10);
2807         pango_font_description_set_size (font_desc, (int)real_scale);
2808         pango_layout_set_font_description (layout, font_desc);
2809         pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
2810
2811         gtk_paint_layout (GTK_WIDGET (view)->style,
2812                           GTK_WIDGET (view)->window,
2813                           GTK_WIDGET_STATE (view),
2814                           FALSE,
2815                           page_area,
2816                           GTK_WIDGET (view),
2817                           NULL,
2818                           page_area->x + (target_width/2),
2819                           page_area->y + (page_area->height - logical_rect.height) / 2,
2820                           layout);
2821
2822         pango_font_description_free (font_desc);
2823         g_object_unref (layout);
2824
2825         ev_document_fc_mutex_unlock ();
2826 }
2827
2828 static void
2829 draw_one_page (EvView          *view,
2830                gint             page,
2831                GdkRectangle    *page_area,
2832                GtkBorder       *border,
2833                GdkRectangle    *expose_area,
2834                gboolean        *page_ready)
2835 {
2836         gint width, height;
2837         GdkPixbuf *current_pixbuf;
2838         GdkRectangle overlap;
2839         GdkRectangle real_page_area;
2840         EvViewSelection *selection;
2841         gint current_page;
2842
2843         g_assert (view->document);
2844
2845         if (! gdk_rectangle_intersect (page_area, expose_area, &overlap))
2846                 return;
2847
2848         current_page = ev_page_cache_get_current_page (view->page_cache);
2849         selection = find_selection_for_page (view, page);
2850         ev_page_cache_get_size (view->page_cache,
2851                                 page, view->rotation,
2852                                 view->scale,
2853                                 &width, &height);
2854         /* Render the document itself */
2855         real_page_area = *page_area;
2856
2857         real_page_area.x += border->left;
2858         real_page_area.y += border->top;
2859         real_page_area.width -= (border->left + border->right);
2860         real_page_area.height -= (border->top + border->bottom);
2861         *page_ready = TRUE;
2862
2863         ev_document_misc_paint_one_page (GTK_WIDGET(view)->window,
2864                                          GTK_WIDGET (view),
2865                                          page_area, border,
2866                                          page == current_page);
2867
2868         if (gdk_rectangle_intersect (&real_page_area, expose_area, &overlap)) {
2869                 GdkPixbuf *selection_pixbuf = NULL;
2870                 GdkPixbuf *scaled_image;
2871                 GdkPixbuf *scaled_selection;
2872
2873                 current_pixbuf = ev_pixbuf_cache_get_pixbuf (view->pixbuf_cache, page);
2874
2875                 /* Get the selection pixbuf iff we have something to draw */
2876                 if (current_pixbuf && view->selection_mode == EV_VIEW_SELECTION_TEXT && selection)
2877                         selection_pixbuf = ev_pixbuf_cache_get_selection_pixbuf (view->pixbuf_cache,
2878                                                                                  page,
2879                                                                                  view->scale,
2880                                                                                  NULL);
2881
2882                 if (current_pixbuf == NULL)
2883                         scaled_image = NULL;
2884                 else if (width == gdk_pixbuf_get_width (current_pixbuf) &&
2885                          height == gdk_pixbuf_get_height (current_pixbuf))
2886                         scaled_image = g_object_ref (current_pixbuf);
2887                 else
2888                         /* FIXME: We don't want to scale the whole area, just the right
2889                          * area of it */
2890                         scaled_image = gdk_pixbuf_scale_simple (current_pixbuf,
2891                                                                 width, height,
2892                                                                 GDK_INTERP_NEAREST);
2893
2894                 if (selection_pixbuf == NULL)
2895                         scaled_selection = NULL;
2896                 else if (width == gdk_pixbuf_get_width (selection_pixbuf) &&
2897                          height == gdk_pixbuf_get_height (selection_pixbuf))
2898                         scaled_selection = g_object_ref (selection_pixbuf);
2899                 else
2900                         /* FIXME: We don't want to scale the whole area, just the right
2901                          * area of it */
2902                         scaled_selection = gdk_pixbuf_scale_simple (selection_pixbuf,
2903                                                                     width, height,
2904                                                                     GDK_INTERP_NEAREST);
2905
2906                 if (scaled_image) {
2907                         gdk_draw_pixbuf (GTK_WIDGET(view)->window,
2908                                          GTK_WIDGET (view)->style->fg_gc[GTK_STATE_NORMAL],
2909                                          scaled_image,
2910                                          overlap.x - real_page_area.x,
2911                                          overlap.y - real_page_area.y,
2912                                          overlap.x, overlap.y,
2913                                          overlap.width, overlap.height,
2914                                          GDK_RGB_DITHER_NORMAL,
2915                                          0, 0);
2916                         g_object_unref (scaled_image);
2917                 } else {
2918                         draw_loading_text (view,
2919                                            &real_page_area,
2920                                            expose_area);
2921                         *page_ready = FALSE;
2922                 }
2923
2924                 if (scaled_selection) {
2925                         gdk_draw_pixbuf (GTK_WIDGET(view)->window,
2926                                          GTK_WIDGET (view)->style->fg_gc[GTK_STATE_NORMAL],
2927                                          scaled_selection,
2928                                          overlap.x - real_page_area.x,
2929                                          overlap.y - real_page_area.y,
2930                                          overlap.x, overlap.y,
2931                                          overlap.width, overlap.height,
2932                                          GDK_RGB_DITHER_NORMAL,
2933                                          0, 0);
2934                         g_object_unref (scaled_selection);
2935                 }
2936         }
2937 }
2938
2939 /*** GObject functions ***/
2940
2941 static void
2942 ev_view_finalize (GObject *object)
2943 {
2944         EvView *view = EV_VIEW (object);
2945
2946         g_free (view->status);
2947         g_free (view->find_status);
2948
2949         clear_selection (view);
2950
2951         if (view->image_dnd_info.image)
2952                 g_object_unref (view->image_dnd_info.image);
2953         view->image_dnd_info.image = NULL;
2954
2955         G_OBJECT_CLASS (ev_view_parent_class)->finalize (object);
2956 }
2957
2958 static void
2959 ev_view_destroy (GtkObject *object)
2960 {
2961         EvView *view = EV_VIEW (object);
2962
2963         if (view->document) {
2964                 g_object_unref (view->document);
2965                 view->document = NULL;
2966         }
2967
2968         if (view->pixbuf_cache) {
2969                 g_object_unref (view->pixbuf_cache);
2970                 view->pixbuf_cache = NULL;
2971         }
2972
2973         if (view->link_tooltip) {
2974                 gtk_widget_destroy (view->link_tooltip);
2975                 view->link_tooltip = NULL;
2976         }
2977
2978         if (view->goto_window) {
2979                 gtk_widget_destroy (view->goto_window);
2980                 view->goto_window = NULL;
2981                 view->goto_entry = NULL;
2982         }
2983
2984         if (view->selection_scroll_id) {
2985             g_source_remove (view->selection_scroll_id);
2986             view->selection_scroll_id = 0;
2987         }
2988
2989         if (view->selection_update_id) {
2990             g_source_remove (view->selection_update_id);
2991             view->selection_update_id = 0;
2992         }
2993
2994         ev_view_presentation_transition_stop (view);
2995
2996         ev_view_set_scroll_adjustments (view, NULL, NULL);
2997
2998         GTK_OBJECT_CLASS (ev_view_parent_class)->destroy (object);
2999 }
3000
3001 static void
3002 ev_view_set_property (GObject      *object,
3003                       guint         prop_id,
3004                       const GValue *value,
3005                       GParamSpec   *pspec)
3006 {
3007         EvView *view = EV_VIEW (object);
3008
3009         switch (prop_id) {
3010                 case PROP_CONTINUOUS:
3011                         ev_view_set_continuous (view, g_value_get_boolean (value));
3012                         break;
3013                 case PROP_DUAL_PAGE:
3014                         ev_view_set_dual_page (view, g_value_get_boolean (value));
3015                         break;
3016                 case PROP_FULLSCREEN:
3017                         ev_view_set_fullscreen (view, g_value_get_boolean (value));
3018                         break;
3019                 case PROP_PRESENTATION:
3020                         ev_view_set_presentation (view, g_value_get_boolean (value));
3021                         break;
3022                 case PROP_SIZING_MODE:
3023                         ev_view_set_sizing_mode (view, g_value_get_enum (value));
3024                         break;
3025                 case PROP_ZOOM:
3026                         ev_view_set_zoom (view, g_value_get_double (value), FALSE);
3027                         break;
3028                 case PROP_ROTATION:
3029                         ev_view_set_rotation (view, g_value_get_int (value));
3030                         break;
3031                 default:
3032                         G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
3033         }
3034 }
3035
3036 static AtkObject *
3037 ev_view_get_accessible (GtkWidget *widget)
3038 {
3039         static gboolean first_time = TRUE;
3040
3041         if (first_time) {
3042                 AtkObjectFactory *factory;
3043                 AtkRegistry *registry;
3044                 GType derived_type;
3045                 GType derived_atk_type;
3046
3047                 /*
3048                  * Figure out whether accessibility is enabled by looking at the
3049                  * type of the accessible object which would be created for
3050                  * the parent type of EvView.
3051                  */
3052                 derived_type = g_type_parent (EV_TYPE_VIEW);
3053
3054                 registry = atk_get_default_registry ();
3055                 factory = atk_registry_get_factory (registry,
3056                                                     derived_type);
3057                 derived_atk_type = atk_object_factory_get_accessible_type (factory);
3058                 if (g_type_is_a (derived_atk_type, GTK_TYPE_ACCESSIBLE))
3059                         atk_registry_set_factory_type (registry,
3060                                                        EV_TYPE_VIEW,
3061                                                        ev_view_accessible_factory_get_type ());
3062                 first_time = FALSE;
3063         }
3064         return GTK_WIDGET_CLASS (ev_view_parent_class)->get_accessible (widget);
3065 }
3066
3067 static void
3068 ev_view_get_property (GObject *object,
3069                       guint prop_id,
3070                       GValue *value,
3071                       GParamSpec *pspec)
3072 {
3073         EvView *view = EV_VIEW (object);
3074
3075         switch (prop_id) {
3076                 case PROP_STATUS:
3077                         g_value_set_string (value, view->status);
3078                         break;
3079                 case PROP_FIND_STATUS:
3080                         g_value_set_string (value, view->status);
3081                         break;
3082                 case PROP_CONTINUOUS:
3083                         g_value_set_boolean (value, view->continuous);
3084                         break;
3085                 case PROP_DUAL_PAGE:
3086                         g_value_set_boolean (value, view->dual_page);
3087                         break;
3088                 case PROP_FULLSCREEN:
3089                         g_value_set_boolean (value, view->fullscreen);
3090                         break;
3091                 case PROP_PRESENTATION:
3092                         g_value_set_boolean (value, view->presentation);
3093                         break;
3094                 case PROP_SIZING_MODE:
3095                         g_value_set_enum (value, view->sizing_mode);
3096                         break;
3097                 case PROP_ZOOM:
3098                         g_value_set_double (value, view->scale);
3099                         break;
3100                 case PROP_ROTATION:
3101                         g_value_set_int (value, view->rotation);
3102                         break;
3103                 case PROP_HAS_SELECTION:
3104                         g_value_set_boolean (value,
3105                                              view->selection_info.selections != NULL);
3106                         break;
3107                 default:
3108                         G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
3109         }
3110 }
3111
3112 static void
3113 ev_view_class_init (EvViewClass *class)
3114 {
3115         GObjectClass *object_class = G_OBJECT_CLASS (class);
3116         GtkObjectClass *gtk_object_class = GTK_OBJECT_CLASS (class);
3117         GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
3118         GtkBindingSet *binding_set;
3119
3120         object_class->finalize = ev_view_finalize;
3121         object_class->set_property = ev_view_set_property;
3122         object_class->get_property = ev_view_get_property;
3123
3124         widget_class->expose_event = ev_view_expose_event;
3125         widget_class->button_press_event = ev_view_button_press_event;
3126         widget_class->motion_notify_event = ev_view_motion_notify_event;
3127         widget_class->button_release_event = ev_view_button_release_event;
3128         widget_class->key_press_event = ev_view_key_press_event;
3129         widget_class->focus_in_event = ev_view_focus_in;
3130         widget_class->focus_out_event = ev_view_focus_out;
3131         widget_class->get_accessible = ev_view_get_accessible;
3132         widget_class->size_request = ev_view_size_request;
3133         widget_class->size_allocate = ev_view_size_allocate;
3134         widget_class->realize = ev_view_realize;
3135         widget_class->scroll_event = ev_view_scroll_event;
3136         widget_class->enter_notify_event = ev_view_enter_notify_event;
3137         widget_class->leave_notify_event = ev_view_leave_notify_event;
3138         widget_class->style_set = ev_view_style_set;
3139         widget_class->drag_data_get = ev_view_drag_data_get;
3140         widget_class->drag_motion = ev_view_drag_motion;
3141         widget_class->drag_data_received = ev_view_drag_data_received;
3142         widget_class->popup_menu = ev_view_popup_menu;
3143         gtk_object_class->destroy = ev_view_destroy;
3144
3145         class->set_scroll_adjustments = ev_view_set_scroll_adjustments;
3146         class->binding_activated = ev_view_scroll;
3147
3148         widget_class->set_scroll_adjustments_signal =
3149             g_signal_new ("set-scroll-adjustments",
3150                           G_OBJECT_CLASS_TYPE (object_class),
3151                           G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
3152                           G_STRUCT_OFFSET (EvViewClass, set_scroll_adjustments),
3153                           NULL, NULL,
3154                           ev_marshal_VOID__OBJECT_OBJECT,
3155                           G_TYPE_NONE, 2,
3156                           GTK_TYPE_ADJUSTMENT,
3157                           GTK_TYPE_ADJUSTMENT);
3158
3159         signals[SIGNAL_BINDING_ACTIVATED] = g_signal_new ("binding_activated",
3160                          G_TYPE_FROM_CLASS (object_class),
3161                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
3162                          G_STRUCT_OFFSET (EvViewClass, binding_activated),
3163                          NULL, NULL,
3164                          ev_marshal_VOID__ENUM_BOOLEAN,
3165                          G_TYPE_NONE, 2,
3166                          GTK_TYPE_SCROLL_TYPE,
3167                          G_TYPE_BOOLEAN);
3168
3169         signals[SIGNAL_ZOOM_INVALID] = g_signal_new ("zoom-invalid",
3170                          G_TYPE_FROM_CLASS (object_class),
3171                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
3172                          G_STRUCT_OFFSET (EvViewClass, zoom_invalid),
3173                          NULL, NULL,
3174                          ev_marshal_VOID__VOID,
3175                          G_TYPE_NONE, 0, G_TYPE_NONE);
3176         signals[SIGNAL_EXTERNAL_LINK] = g_signal_new ("external-link",
3177                          G_TYPE_FROM_CLASS (object_class),
3178                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
3179                          G_STRUCT_OFFSET (EvViewClass, external_link),
3180                          NULL, NULL,
3181                          g_cclosure_marshal_VOID__OBJECT,
3182                          G_TYPE_NONE, 1,
3183                          G_TYPE_OBJECT);
3184         signals[SIGNAL_POPUP_MENU] = g_signal_new ("popup",
3185                          G_TYPE_FROM_CLASS (object_class),
3186                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
3187                          G_STRUCT_OFFSET (EvViewClass, popup_menu),
3188                          NULL, NULL,
3189                          g_cclosure_marshal_VOID__OBJECT,
3190                          G_TYPE_NONE, 1,
3191                          G_TYPE_OBJECT);
3192
3193         g_object_class_install_property (object_class,
3194                                          PROP_STATUS,
3195                                          g_param_spec_string ("status",
3196                                                               "Status Message",
3197                                                               "The status message",
3198                                                               NULL,
3199                                                               G_PARAM_READABLE));
3200
3201         g_object_class_install_property (object_class,
3202                                          PROP_FIND_STATUS,
3203                                          g_param_spec_string ("find-status",
3204                                                               "Find Status Message",
3205                                                               "The find status message",
3206                                                               NULL,
3207                                                               G_PARAM_READABLE));
3208
3209         g_object_class_install_property (object_class,
3210                                          PROP_CONTINUOUS,
3211                                          g_param_spec_boolean ("continuous",
3212                                                                "Continuous",
3213                                                                "Continuous scrolling mode",
3214                                                                TRUE,
3215                                                                G_PARAM_READWRITE));
3216
3217         g_object_class_install_property (object_class,
3218                                          PROP_DUAL_PAGE,
3219                                          g_param_spec_boolean ("dual-page",
3220                                                                "Dual Page",
3221                                                                "Two pages visible at once",
3222                                                                FALSE,
3223                                                                G_PARAM_READWRITE));
3224         g_object_class_install_property (object_class,
3225                                          PROP_FULLSCREEN,
3226                                          g_param_spec_boolean ("fullscreen",
3227                                                                "Full Screen",
3228                                                                "Draw page in a fullscreen fashion",
3229                                                                FALSE,
3230                                                                G_PARAM_READWRITE));
3231         g_object_class_install_property (object_class,
3232                                          PROP_PRESENTATION,
3233                                          g_param_spec_boolean ("presentation",
3234                                                                "Presentation",
3235                                                                "Draw page in presentation mode",
3236                                                                TRUE,
3237                                                                G_PARAM_READWRITE));
3238
3239         g_object_class_install_property (object_class,
3240                                          PROP_SIZING_MODE,
3241                                          g_param_spec_enum ("sizing-mode",
3242                                                             "Sizing Mode",
3243                                                             "Sizing Mode",
3244                                                             EV_TYPE_SIZING_MODE,
3245                                                             EV_SIZING_FIT_WIDTH,
3246                                                             G_PARAM_READWRITE));
3247
3248         g_object_class_install_property (object_class,
3249                                          PROP_ZOOM,
3250                                          g_param_spec_double ("zoom",
3251                                                               "Zoom factor",
3252                                                               "Zoom factor",
3253                                                               0,
3254                                                               G_MAXDOUBLE,
3255                                                               1.0,
3256                                                               G_PARAM_READWRITE));
3257         g_object_class_install_property (object_class,
3258                                          PROP_ROTATION,
3259                                          g_param_spec_double ("rotation",
3260                                                               "Rotation",
3261                                                               "Rotation",
3262                                                               0,
3263                                                               360,
3264                                                               0,
3265                                                               G_PARAM_READWRITE));
3266         g_object_class_install_property (object_class,
3267                                          PROP_HAS_SELECTION,
3268                                          g_param_spec_boolean ("has-selection",
3269                                                                "Has selection",
3270                                                                "The view has selections",
3271                                                                FALSE,
3272                                                                G_PARAM_READABLE));
3273
3274         binding_set = gtk_binding_set_by_class (class);
3275
3276         add_scroll_binding_keypad (binding_set, GDK_Left,  0, EV_SCROLL_STEP_BACKWARD, TRUE);
3277         add_scroll_binding_keypad (binding_set, GDK_Right, 0, EV_SCROLL_STEP_FORWARD,  TRUE);
3278         add_scroll_binding_keypad (binding_set, GDK_Left,  GDK_MOD1_MASK, EV_SCROLL_STEP_DOWN, TRUE);
3279         add_scroll_binding_keypad (binding_set, GDK_Right, GDK_MOD1_MASK, EV_SCROLL_STEP_UP,  TRUE);
3280         add_scroll_binding_keypad (binding_set, GDK_Up,    0, EV_SCROLL_STEP_BACKWARD, FALSE);
3281         add_scroll_binding_keypad (binding_set, GDK_Down,  0, EV_SCROLL_STEP_FORWARD,  FALSE);
3282         add_scroll_binding_keypad (binding_set, GDK_Up,    GDK_MOD1_MASK, EV_SCROLL_STEP_DOWN, FALSE);
3283         add_scroll_binding_keypad (binding_set, GDK_Down,  GDK_MOD1_MASK, EV_SCROLL_STEP_UP,  FALSE);
3284 }
3285
3286 static void
3287 ev_view_init (EvView *view)
3288 {
3289         GTK_WIDGET_SET_FLAGS (view, GTK_CAN_FOCUS);
3290
3291         view->spacing = 5;
3292         view->scale = 1.0;
3293         view->current_page = 0;
3294         view->pressed_button = -1;
3295         view->cursor = EV_VIEW_CURSOR_NORMAL;
3296         view->drag_info.in_drag = FALSE;
3297         view->selection_info.selections = NULL;
3298         view->selection_info.in_selection = FALSE;
3299         view->selection_info.in_drag = FALSE;
3300         view->selection_mode = EV_VIEW_SELECTION_TEXT;
3301         view->continuous = TRUE;
3302         view->dual_page = FALSE;
3303         view->presentation = FALSE;
3304         view->presentation_state = EV_PRESENTATION_NORMAL;
3305         view->fullscreen = FALSE;
3306         view->sizing_mode = EV_SIZING_FIT_WIDTH;
3307         view->pending_scroll = SCROLL_TO_KEEP_POSITION;
3308         view->jump_to_find_result = TRUE;
3309
3310         gtk_drag_dest_set (GTK_WIDGET (view),
3311                            GTK_DEST_DEFAULT_ALL,
3312                            view_drop_targets,
3313                            G_N_ELEMENTS (view_drop_targets),
3314                            GDK_ACTION_COPY);
3315 }
3316
3317 /*** Callbacks ***/
3318
3319 static void
3320 find_changed_cb (EvDocument *document, int page, EvView *view)
3321 {
3322         double percent;
3323         int n_pages;
3324
3325         percent = ev_document_find_get_progress
3326                         (EV_DOCUMENT_FIND (view->document));
3327         n_pages = ev_page_cache_get_n_pages (view->page_cache);
3328
3329         if (view->jump_to_find_result == TRUE) {
3330                 jump_to_find_page (view, EV_VIEW_FIND_NEXT, 0);
3331                 jump_to_find_result (view);
3332         }
3333         update_find_status_message (view, percent * n_pages >= n_pages - 1 );
3334         if (view->current_page == page)
3335                 gtk_widget_queue_draw (GTK_WIDGET (view));
3336 }
3337
3338 static void
3339 job_finished_cb (EvPixbufCache *pixbuf_cache,
3340                  EvView        *view)
3341 {
3342         gtk_widget_queue_draw (GTK_WIDGET (view));
3343 }
3344
3345 static void
3346 page_changed_cb (EvPageCache *page_cache,
3347                  int          new_page,
3348                  EvView      *view)
3349 {
3350         if (view->current_page != new_page) {
3351                 view->current_page = new_page;
3352                 view->pending_scroll = SCROLL_TO_PAGE_POSITION;
3353                 if (view->presentation)
3354                         ev_view_presentation_transition_start (view);
3355                 gtk_widget_queue_resize (GTK_WIDGET (view));
3356         } else {
3357                 gtk_widget_queue_draw (GTK_WIDGET (view));
3358         }
3359
3360         if (EV_IS_DOCUMENT_FIND (view->document)) {
3361                 view->find_result = 0;
3362                 update_find_status_message (view, TRUE);
3363         }
3364 }
3365
3366 static void on_adjustment_value_changed (GtkAdjustment  *adjustment,
3367                                          EvView *view)
3368 {
3369         int dx = 0, dy = 0;
3370
3371         if (! GTK_WIDGET_REALIZED (view))
3372                 return;
3373
3374         if (view->hadjustment) {
3375                 dx = view->scroll_x - (int) view->hadjustment->value;
3376                 view->scroll_x = (int) view->hadjustment->value;
3377         } else {
3378                 view->scroll_x = 0;
3379         }
3380
3381         if (view->vadjustment) {
3382                 dy = view->scroll_y - (int) view->vadjustment->value;
3383                 view->scroll_y = (int) view->vadjustment->value;
3384         } else {
3385                 view->scroll_y = 0;
3386         }
3387
3388
3389         if (view->pending_resize)
3390                 gtk_widget_queue_draw (GTK_WIDGET (view));
3391         else
3392                 gdk_window_scroll (GTK_WIDGET (view)->window, dx, dy);
3393
3394
3395         if (view->document)
3396                 view_update_range_and_current_page (view);
3397 }
3398
3399 GtkWidget*
3400 ev_view_new (void)
3401 {
3402         GtkWidget *view;
3403
3404         view = g_object_new (EV_TYPE_VIEW, NULL);
3405
3406         return view;
3407 }
3408
3409 static void
3410 setup_caches (EvView *view)
3411 {
3412         view->page_cache = ev_page_cache_get (view->document);
3413         g_signal_connect (view->page_cache, "page-changed", G_CALLBACK (page_changed_cb), view);
3414         view->pixbuf_cache = ev_pixbuf_cache_new (GTK_WIDGET (view), view->document);
3415         g_signal_connect (view->pixbuf_cache, "job-finished", G_CALLBACK (job_finished_cb), view);
3416 }
3417
3418 static void
3419 clear_caches (EvView *view)
3420 {
3421         if (view->pixbuf_cache) {
3422                 g_object_unref (view->pixbuf_cache);
3423                 view->pixbuf_cache = NULL;
3424         }
3425
3426         if (view->page_cache) {
3427                 view->page_cache = NULL;
3428         }
3429 }
3430
3431 void
3432 ev_view_set_loading (EvView       *view,
3433                      gboolean      loading)
3434 {
3435         view->loading = loading;
3436         gtk_widget_queue_draw (GTK_WIDGET (view));
3437 }
3438
3439 void
3440 ev_view_set_document (EvView     *view,
3441                       EvDocument *document)
3442 {
3443         g_return_if_fail (EV_IS_VIEW (view));
3444
3445         view->loading = FALSE;
3446
3447         if (document != view->document) {
3448                 clear_caches (view);
3449
3450                 if (view->document) {
3451                         g_signal_handlers_disconnect_by_func (view->document,
3452                                                               find_changed_cb,
3453                                                               view);
3454                         g_object_unref (view->document);
3455                         view->page_cache = NULL;
3456
3457                 }
3458
3459                 view->document = document;
3460                 view->find_result = 0;
3461
3462                 if (view->document) {
3463                         g_object_ref (view->document);
3464                         if (EV_IS_DOCUMENT_FIND (view->document)) {
3465                                 g_signal_connect (view->document,
3466                                                   "find_changed",
3467                                                   G_CALLBACK (find_changed_cb),
3468                                                   view);
3469                         }
3470
3471                         setup_caches (view);
3472                 }
3473
3474                 gtk_widget_queue_resize (GTK_WIDGET (view));
3475         }
3476 }
3477
3478 /*** Zoom and sizing mode ***/
3479
3480 #define EPSILON 0.0000001
3481 void
3482 ev_view_set_zoom (EvView   *view,
3483                   double    factor,
3484                   gboolean  relative)
3485 {
3486         double scale;
3487
3488         if (relative)
3489                 scale = view->scale * factor;
3490         else
3491                 scale = factor;
3492
3493         scale = CLAMP (scale, view->min_scale, view->max_scale);
3494
3495         if (ABS (view->scale - scale) < EPSILON)
3496                 return;
3497
3498         view->scale = scale;
3499         view->pending_resize = TRUE;
3500
3501         gtk_widget_queue_resize (GTK_WIDGET (view));
3502
3503         g_object_notify (G_OBJECT (view), "zoom");
3504 }
3505
3506 double
3507 ev_view_get_zoom (EvView *view)
3508 {
3509         return view->scale;
3510 }
3511
3512 void
3513 ev_view_set_screen_dpi (EvView  *view,
3514                         gdouble  dpi)
3515 {
3516         g_return_if_fail (EV_IS_VIEW (view));
3517         g_return_if_fail (dpi > 0);
3518
3519         view->dpi = dpi;
3520         view->min_scale = MIN_SCALE * dpi / 72.0;
3521         view->max_scale = MAX_SCALE * dpi / 72.0;
3522 }
3523
3524 gboolean
3525 ev_view_get_continuous (EvView *view)
3526 {
3527         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
3528
3529         return view->continuous;
3530 }
3531
3532 void
3533 ev_view_set_continuous (EvView   *view,
3534                         gboolean  continuous)
3535 {
3536         g_return_if_fail (EV_IS_VIEW (view));
3537
3538         continuous = continuous != FALSE;
3539
3540         if (view->continuous != continuous) {
3541                 view->continuous = continuous;
3542                 view->pending_scroll = SCROLL_TO_PAGE_POSITION;
3543                 gtk_widget_queue_resize (GTK_WIDGET (view));
3544         }
3545
3546         g_object_notify (G_OBJECT (view), "continuous");
3547 }
3548
3549 gboolean
3550 ev_view_get_dual_page (EvView *view)
3551 {
3552         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
3553
3554         return view->dual_page;
3555 }
3556
3557 void
3558 ev_view_set_dual_page (EvView   *view,
3559                        gboolean  dual_page)
3560 {
3561         g_return_if_fail (EV_IS_VIEW (view));
3562
3563         dual_page = dual_page != FALSE;
3564
3565         if (view->dual_page == dual_page)
3566                 return;
3567
3568         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
3569         view->dual_page = dual_page;
3570         /* FIXME: if we're keeping the pixbuf cache around, we should extend the
3571          * preload_cache_size to be 2 if dual_page is set.
3572          */
3573         gtk_widget_queue_resize (GTK_WIDGET (view));
3574
3575         g_object_notify (G_OBJECT (view), "dual-page");
3576 }
3577
3578 void
3579 ev_view_set_fullscreen (EvView   *view,
3580                          gboolean  fullscreen)
3581 {
3582         g_return_if_fail (EV_IS_VIEW (view));
3583
3584         fullscreen = fullscreen != FALSE;
3585
3586         if (view->fullscreen == fullscreen)
3587                 return;
3588
3589         view->fullscreen = fullscreen;
3590         gtk_widget_queue_resize (GTK_WIDGET (view));
3591
3592         g_object_notify (G_OBJECT (view), "fullscreen");
3593 }
3594
3595 gboolean
3596 ev_view_get_fullscreen (EvView *view)
3597 {
3598         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
3599
3600         return view->fullscreen;
3601 }
3602
3603 void
3604 ev_view_set_presentation (EvView   *view,
3605                           gboolean  presentation)
3606 {
3607         g_return_if_fail (EV_IS_VIEW (view));
3608
3609         presentation = presentation != FALSE;
3610
3611         if (view->presentation == presentation)
3612                 return;
3613
3614         if (!presentation)
3615                 view->presentation_state = EV_PRESENTATION_NORMAL;
3616
3617         view->presentation = presentation;
3618         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
3619
3620         if (presentation) {
3621                 view->sizing_mode_saved = view->sizing_mode;
3622                 view->scale_saved = view->scale;
3623                 ev_view_set_sizing_mode (view, EV_SIZING_BEST_FIT);
3624         } else {
3625                 ev_view_set_sizing_mode (view, view->sizing_mode_saved);
3626                 ev_view_set_zoom (view, view->scale_saved, FALSE);
3627         }
3628
3629         gtk_widget_queue_resize (GTK_WIDGET (view));
3630
3631         if (presentation)
3632                 ev_view_presentation_transition_start (view);
3633         else
3634                 ev_view_presentation_transition_stop (view);
3635
3636         if (GTK_WIDGET_REALIZED (view)) {
3637                 if (view->presentation)
3638                         gdk_window_set_background (GTK_WIDGET(view)->window,
3639                                                    &GTK_WIDGET (view)->style->black);
3640                 else
3641                         gdk_window_set_background (GTK_WIDGET(view)->window,
3642                                                    &GTK_WIDGET (view)->style->mid [GTK_STATE_NORMAL]);
3643         }
3644
3645         g_object_notify (G_OBJECT (view), "presentation");
3646 }
3647
3648 gboolean
3649 ev_view_get_presentation (EvView *view)
3650 {
3651         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
3652
3653         return view->presentation;
3654 }
3655
3656 static gboolean
3657 transition_next_page (EvView *view)
3658 {
3659         ev_view_next_page (view);
3660
3661         return FALSE;
3662 }
3663
3664 static void
3665 ev_view_presentation_transition_stop (EvView *view)
3666 {
3667         if (view->trans_timeout_id > 0)
3668                 g_source_remove (view->trans_timeout_id);
3669         view->trans_timeout_id = 0;
3670 }
3671
3672 static void
3673 ev_view_presentation_transition_start (EvView *view)
3674 {
3675         gdouble duration;
3676
3677         if (!EV_IS_DOCUMENT_TRANSITION (view->document))
3678                 return;
3679
3680         ev_view_presentation_transition_stop (view);
3681
3682         duration = ev_document_transition_get_page_duration (EV_DOCUMENT_TRANSITION (view->document),
3683                                                              view->current_page);
3684         if (duration > 0)
3685                 view->trans_timeout_id = g_timeout_add (duration * 1000,
3686                                                         (GSourceFunc) transition_next_page,
3687                                                         view);
3688 }
3689
3690 void
3691 ev_view_set_sizing_mode (EvView       *view,
3692                          EvSizingMode  sizing_mode)
3693 {
3694         g_return_if_fail (EV_IS_VIEW (view));
3695
3696         if (view->sizing_mode == sizing_mode)
3697                 return;
3698
3699         view->sizing_mode = sizing_mode;
3700         gtk_widget_queue_resize (GTK_WIDGET (view));
3701
3702         g_object_notify (G_OBJECT (view), "sizing-mode");
3703 }
3704
3705 EvSizingMode
3706 ev_view_get_sizing_mode (EvView *view)
3707 {
3708         g_return_val_if_fail (EV_IS_VIEW (view), EV_SIZING_FREE);
3709
3710         return view->sizing_mode;
3711 }
3712
3713 gboolean
3714 ev_view_can_zoom_in (EvView *view)
3715 {
3716         return view->scale * ZOOM_IN_FACTOR <= view->max_scale;
3717 }
3718
3719 gboolean
3720 ev_view_can_zoom_out (EvView *view)
3721 {
3722         return view->scale * ZOOM_OUT_FACTOR >= view->min_scale;
3723 }
3724
3725 void
3726 ev_view_zoom_in (EvView *view)
3727 {
3728         g_return_if_fail (view->sizing_mode == EV_SIZING_FREE);
3729
3730         view->pending_scroll = SCROLL_TO_CENTER;
3731         ev_view_set_zoom (view, ZOOM_IN_FACTOR, TRUE);
3732 }
3733
3734 void
3735 ev_view_zoom_out (EvView *view)
3736 {
3737         g_return_if_fail (view->sizing_mode == EV_SIZING_FREE);
3738
3739         view->pending_scroll = SCROLL_TO_CENTER;
3740         ev_view_set_zoom (view, ZOOM_OUT_FACTOR, TRUE);
3741 }
3742
3743 void
3744 ev_view_rotate_right (EvView *view)
3745 {
3746         int rotation = view->rotation + 90;
3747
3748         if (rotation >= 360) {
3749                 rotation -= 360;
3750         }
3751
3752         ev_view_set_rotation (view, rotation);
3753 }
3754
3755 void
3756 ev_view_rotate_left (EvView *view)
3757 {
3758         int rotation = view->rotation - 90;
3759
3760         if (rotation < 0) {
3761                 rotation += 360;
3762         }
3763
3764         ev_view_set_rotation (view, rotation);
3765 }
3766
3767 void
3768 ev_view_set_rotation (EvView *view, int rotation)
3769 {
3770         view->rotation = rotation;
3771
3772         if (view->pixbuf_cache) {
3773                 ev_pixbuf_cache_clear (view->pixbuf_cache);
3774                 gtk_widget_queue_resize (GTK_WIDGET (view));
3775         }
3776
3777         if (rotation != 0)
3778                 clear_selection (view);
3779
3780         g_object_notify (G_OBJECT (view), "rotation");
3781 }
3782
3783 int
3784 ev_view_get_rotation (EvView *view)
3785 {
3786         return view->rotation;
3787 }
3788
3789 static double
3790 zoom_for_size_fit_width (int doc_width,
3791                          int doc_height,
3792                          int target_width,
3793                          int target_height,
3794                          int vsb_width)
3795 {
3796         double scale;
3797
3798         scale = (double)target_width / doc_width;
3799
3800         if (doc_height * scale > target_height)
3801                 scale = (double) (target_width - vsb_width) / doc_width;
3802
3803         return scale;
3804 }
3805
3806 static double
3807 zoom_for_size_fit_height (int doc_width,
3808                           int doc_height,
3809                           int target_width,
3810                           int target_height,
3811                           int vsb_height)
3812 {
3813         double scale;
3814
3815         scale = (double)target_height / doc_height;
3816
3817         if (doc_width * scale > target_width)
3818                 scale = (double) (target_height - vsb_height) / doc_height;
3819
3820         return scale;
3821 }
3822
3823 static double
3824 zoom_for_size_best_fit (int doc_width,
3825                         int doc_height,
3826                         int target_width,
3827                         int target_height,
3828                         int vsb_width,
3829                         int hsb_width)
3830 {
3831         double w_scale;
3832         double h_scale;
3833
3834         w_scale = (double)target_width / doc_width;
3835         h_scale = (double)target_height / doc_height;
3836
3837         if (doc_height * w_scale > target_height)
3838                 w_scale = (double) (target_width - vsb_width) / doc_width;
3839         if (doc_width * h_scale > target_width)
3840                 h_scale = (double) (target_height - hsb_width) / doc_height;
3841
3842         return MIN (w_scale, h_scale);
3843 }
3844
3845
3846 static void
3847 ev_view_zoom_for_size_presentation (EvView *view,
3848                                     int     width,
3849                                     int     height)
3850 {
3851         int doc_width, doc_height;
3852         gdouble scale;
3853
3854         ev_page_cache_get_size (view->page_cache,
3855                                 view->current_page,
3856                                 view->rotation,
3857                                 1.0,
3858                                 &doc_width,
3859                                 &doc_height);
3860         scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, 0, 0);
3861         ev_view_set_zoom (view, scale, FALSE);
3862 }
3863
3864 static void
3865 ev_view_zoom_for_size_continuous_and_dual_page (EvView *view,
3866                            int     width,
3867                            int     height,
3868                            int     vsb_width,
3869                            int     hsb_height)
3870 {
3871         int doc_width, doc_height;
3872         GtkBorder border;
3873         gdouble scale;
3874
3875         ev_page_cache_get_max_width (view->page_cache,
3876                                      view->rotation,
3877                                      1.0,
3878                                      &doc_width);
3879         ev_page_cache_get_max_height (view->page_cache,
3880                                       view->rotation,
3881                                       1.0,
3882                                       &doc_height);
3883         compute_border (view, doc_width, doc_height, &border);
3884
3885         doc_width = doc_width * 2;
3886         width -= (2 * (border.left + border.right) + 3 * view->spacing);
3887         height -= (border.top + border.bottom + 2 * view->spacing - 1);
3888
3889         /* FIXME: We really need to calculate the overall height here, not the
3890          * page height.  We assume there's always a vertical scrollbar for
3891          * now.  We need to fix this. */
3892         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
3893                 scale = zoom_for_size_fit_width (doc_width, doc_height, width - vsb_width, height, 0);
3894         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
3895                 scale = zoom_for_size_best_fit (doc_width, doc_height, width - vsb_width, height, 0, hsb_height);
3896         else
3897                 g_assert_not_reached ();
3898
3899         ev_view_set_zoom (view, scale, FALSE);
3900 }
3901
3902 static void
3903 ev_view_zoom_for_size_continuous (EvView *view,
3904                                   int     width,
3905                                   int     height,
3906                                   int     vsb_width,
3907                                   int     hsb_height)
3908 {
3909         int doc_width, doc_height;
3910         GtkBorder border;
3911         gdouble scale;
3912
3913         ev_page_cache_get_max_width (view->page_cache,
3914                                      view->rotation,
3915                                      1.0,
3916                                      &doc_width);
3917         ev_page_cache_get_max_height (view->page_cache,
3918                                       view->rotation,
3919                                       1.0,
3920                                       &doc_height);
3921         compute_border (view, doc_width, doc_height, &border);
3922
3923         width -= (border.left + border.right + 2 * view->spacing);
3924         height -= (border.top + border.bottom + 2 * view->spacing - 1);
3925
3926         /* FIXME: We really need to calculate the overall height here, not the
3927          * page height.  We assume there's always a vertical scrollbar for
3928          * now.  We need to fix this. */
3929         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
3930                 scale = zoom_for_size_fit_width (doc_width, doc_height, width - vsb_width, height, 0);
3931         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
3932                 scale = zoom_for_size_best_fit (doc_width, doc_height, width - vsb_width, height, 0, hsb_height);
3933         else
3934                 g_assert_not_reached ();
3935
3936         ev_view_set_zoom (view, scale, FALSE);
3937 }
3938
3939 static void
3940 ev_view_zoom_for_size_dual_page (EvView *view,
3941                                  int     width,
3942                                  int     height,
3943                                  int     vsb_width,
3944                                  int     hsb_height)
3945 {
3946         GtkBorder border;
3947         gint doc_width, doc_height;
3948         gdouble scale;
3949         gint other_page;
3950
3951         other_page = view->current_page ^ 1;
3952
3953         /* Find the largest of the two. */
3954         ev_page_cache_get_size (view->page_cache,
3955                                 view->current_page,
3956                                 view->rotation,
3957                                 1.0,
3958                                 &doc_width, &doc_height);
3959
3960         if (other_page < ev_page_cache_get_n_pages (view->page_cache)) {
3961                 gint width_2, height_2;
3962                 ev_page_cache_get_size (view->page_cache,
3963                                         other_page,
3964                                         view->rotation,
3965                                         1.0,
3966                                         &width_2, &height_2);
3967                 if (width_2 > doc_width)
3968                         doc_width = width_2;
3969                 if (height_2 > doc_height)
3970                         doc_height = height_2;
3971         }
3972         compute_border (view, doc_width, doc_height, &border);
3973
3974         doc_width = doc_width * 2;
3975         width -= ((border.left + border.right)* 2 + 3 * view->spacing);
3976         height -= (border.top + border.bottom + 2 * view->spacing);
3977
3978         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
3979                 scale = zoom_for_size_fit_width (doc_width, doc_height, width, height, vsb_width);
3980         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
3981                 scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, vsb_width, hsb_height);
3982         else
3983                 g_assert_not_reached ();
3984
3985         ev_view_set_zoom (view, scale, FALSE);
3986 }
3987
3988 static void
3989 ev_view_zoom_for_size_single_page (EvView *view,
3990                                    int     width,
3991                                    int     height,
3992                                    int     vsb_width,
3993                                    int     hsb_height)
3994 {
3995         int doc_width, doc_height;
3996         GtkBorder border;
3997         gdouble scale;
3998
3999         ev_page_cache_get_size (view->page_cache,
4000                                 view->current_page,
4001                                 view->rotation,
4002                                 1.0,
4003                                 &doc_width,
4004                                 &doc_height);
4005         /* Get an approximate border */
4006         compute_border (view, width, height, &border);
4007
4008         width -= (border.left + border.right + 2 * view->spacing);
4009         height -= (border.top + border.bottom + 2 * view->spacing);
4010
4011         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
4012                 scale = zoom_for_size_fit_width (doc_width, doc_height, width, height, vsb_width);
4013         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
4014                 scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, vsb_width, hsb_height);
4015         else
4016                 g_assert_not_reached ();
4017
4018         ev_view_set_zoom (view, scale, FALSE);
4019 }
4020
4021 void
4022 ev_view_set_zoom_for_size (EvView *view,
4023                            int     width,
4024                            int     height,
4025                            int     vsb_width,
4026                            int     hsb_height)
4027 {
4028         g_return_if_fail (view->sizing_mode == EV_SIZING_FIT_WIDTH ||
4029                           view->sizing_mode == EV_SIZING_BEST_FIT);
4030         g_return_if_fail (width >= 0);
4031         g_return_if_fail (height >= 0);
4032
4033         if (view->document == NULL)
4034                 return;
4035
4036         if (view->presentation)
4037                 ev_view_zoom_for_size_presentation (view, width, height);
4038         else if (view->continuous && view->dual_page)
4039                 ev_view_zoom_for_size_continuous_and_dual_page (view, width, height, vsb_width, hsb_height);
4040         else if (view->continuous)
4041                 ev_view_zoom_for_size_continuous (view, width, height, vsb_width, hsb_height);
4042         else if (view->dual_page)
4043                 ev_view_zoom_for_size_dual_page (view, width, height, vsb_width, hsb_height);
4044         else
4045                 ev_view_zoom_for_size_single_page (view, width, height, vsb_width, hsb_height);
4046 }
4047
4048 /*** Status text messages ***/
4049
4050 const char *
4051 ev_view_get_status (EvView *view)
4052 {
4053         g_return_val_if_fail (EV_IS_VIEW (view), NULL);
4054
4055         return view->status;
4056 }
4057
4058 static void
4059 ev_view_set_status (EvView *view, const char *message)
4060 {
4061         g_return_if_fail (EV_IS_VIEW (view));
4062
4063         if (message != view->status) {
4064                 g_free (view->status);
4065                 view->status = g_strdup (message);
4066                 g_object_notify (G_OBJECT (view), "status");
4067         }
4068 }
4069
4070 static void
4071 update_find_status_message (EvView *view, gboolean this_page)
4072 {
4073         char *message;
4074
4075         if (this_page) {
4076                 int results;
4077
4078                 results = ev_document_find_get_n_results
4079                                 (EV_DOCUMENT_FIND (view->document),
4080                                  view->current_page);
4081                 /* TRANS: Sometimes this could be better translated as
4082                    "%d hit(s) on this page".  Therefore this string
4083                    contains plural cases. */
4084                 message = g_strdup_printf (ngettext ("%d found on this page",
4085                                                      "%d found on this page",
4086                                                      results),
4087                                            results);
4088         } else {
4089                 double percent;
4090
4091                 percent = ev_document_find_get_progress
4092                                 (EV_DOCUMENT_FIND (view->document));
4093                 message = g_strdup_printf (_("%3d%% remaining to search"),
4094                                            (int) ((1.0 - percent) * 100));
4095
4096         }
4097         ev_view_set_find_status (view, message);
4098         g_free (message);
4099 }
4100
4101 const char *
4102 ev_view_get_find_status (EvView *view)
4103 {
4104         g_return_val_if_fail (EV_IS_VIEW (view), NULL);
4105
4106         return view->find_status;
4107 }
4108
4109 static void
4110 ev_view_set_find_status (EvView *view, const char *message)
4111 {
4112         g_return_if_fail (EV_IS_VIEW (view));
4113
4114         g_free (view->find_status);
4115         view->find_status = g_strdup (message);
4116         g_object_notify (G_OBJECT (view), "find-status");
4117 }
4118
4119 /*** Find ***/
4120
4121 static void
4122 jump_to_find_result (EvView *view)
4123 {
4124         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
4125         EvRectangle rect;
4126         GdkRectangle view_rect;
4127         int n_results;
4128         int page = view->current_page;
4129
4130         n_results = ev_document_find_get_n_results (find, page);
4131
4132         if (n_results > 0  && view->find_result < n_results) {
4133                 ev_document_find_get_result
4134                         (find, page, view->find_result, &rect);
4135
4136                 doc_rect_to_view_rect (view, page, &rect, &view_rect);
4137                 ensure_rectangle_is_visible (view, &view_rect);
4138         }
4139 }
4140
4141 /**
4142  * jump_to_find_page
4143  * @view: #EvView instance
4144  * @direction: Direction to look
4145  * @shift: Shift from current page
4146  *
4147  * Jumps to the first page that has occurences of searched word.
4148  * Uses a direction where to look and a shift from current page.
4149  *
4150  */
4151 static void
4152 jump_to_find_page (EvView *view, EvViewFindDirection direction, gint shift)
4153 {
4154         int n_pages, i;
4155
4156         n_pages = ev_page_cache_get_n_pages (view->page_cache);
4157
4158         for (i = 0; i < n_pages; i++) {
4159                 int has_results;
4160                 int page;
4161
4162                 if (direction == EV_VIEW_FIND_NEXT)
4163                         page = view->current_page + i;
4164                 else
4165                         page = view->current_page - i;
4166                 page += shift;
4167
4168                 if (page >= n_pages) {
4169                         page = page - n_pages;
4170                 }
4171                 if (page < 0)
4172                         page = page + n_pages;
4173
4174                 has_results = ev_document_find_page_has_results
4175                                 (EV_DOCUMENT_FIND (view->document), page);
4176                 if (has_results == -1) {
4177                         break;
4178                 } else if (has_results == 1) {
4179                         ev_page_cache_set_current_page (view->page_cache, page);
4180                         break;
4181                 }
4182         }
4183 }
4184
4185 gboolean
4186 ev_view_can_find_next (EvView *view)
4187 {
4188         if (EV_IS_DOCUMENT_FIND (view->document)) {
4189                 EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
4190                 int i, n_pages;
4191
4192                 n_pages = ev_page_cache_get_n_pages (view->page_cache);
4193                 for (i = 0; i < n_pages; i++) {
4194                         if (ev_document_find_get_n_results (find, i) > 0) {
4195                                 return TRUE;
4196                         }
4197                 }
4198         }
4199
4200         return FALSE;
4201 }
4202
4203 void
4204 ev_view_find_next (EvView *view)
4205 {
4206         int n_results, n_pages;
4207         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
4208
4209         n_results = ev_document_find_get_n_results (find, view->current_page);
4210
4211         n_pages = ev_page_cache_get_n_pages (view->page_cache);
4212
4213         view->find_result++;
4214
4215         if (view->find_result >= n_results) {
4216
4217                 view->find_result = 0;
4218                 jump_to_find_page (view, EV_VIEW_FIND_NEXT, 1);
4219                 jump_to_find_result (view);
4220         } else {
4221                 jump_to_find_result (view);
4222                 gtk_widget_queue_draw (GTK_WIDGET (view));
4223         }
4224 }
4225
4226 gboolean
4227 ev_view_can_find_previous (EvView *view)
4228 {
4229         if (EV_IS_DOCUMENT_FIND (view->document)) {
4230                 EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
4231                 int i, n_pages;
4232
4233                 n_pages = ev_page_cache_get_n_pages (view->page_cache);
4234                 for (i = n_pages - 1; i >= 0; i--) {
4235                         if (ev_document_find_get_n_results (find, i) > 0) {
4236                                 return TRUE;
4237                         }
4238                 }
4239         }
4240
4241         return FALSE;
4242 }
4243 void
4244 ev_view_find_previous (EvView *view)
4245 {
4246         int n_results, n_pages;
4247         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
4248         EvPageCache *page_cache;
4249
4250         page_cache = ev_page_cache_get (view->document);
4251
4252         n_results = ev_document_find_get_n_results (find, view->current_page);
4253
4254         n_pages = ev_page_cache_get_n_pages (page_cache);
4255
4256         view->find_result--;
4257
4258         if (view->find_result < 0) {
4259
4260                 jump_to_find_page (view, EV_VIEW_FIND_PREV, -1);
4261                 view->find_result = ev_document_find_get_n_results (find, view->current_page) - 1;
4262                 jump_to_find_result (view);
4263         } else {
4264                 jump_to_find_result (view);
4265                 gtk_widget_queue_draw (GTK_WIDGET (view));
4266         }
4267 }
4268
4269 void ev_view_search_changed (EvView *view)
4270 {
4271         /* search string has changed, focus on new search result */
4272         view->jump_to_find_result = TRUE;
4273 }
4274
4275 /*** Selections ***/
4276
4277 /* compute_new_selection_rect/text calculates the area currently selected by
4278  * view_rect.  each handles a different mode;
4279  */
4280 static GList *
4281 compute_new_selection_rect (EvView       *view,
4282                             GdkPoint     *start,
4283                             GdkPoint     *stop)
4284 {
4285         GdkRectangle view_rect;
4286         int n_pages, i;
4287         GList *list = NULL;
4288
4289         g_assert (view->selection_mode == EV_VIEW_SELECTION_RECTANGLE);
4290
4291         view_rect.x = MIN (start->x, stop->x);
4292         view_rect.y = MIN (start->y, stop->y);
4293         view_rect.width = MAX (start->x, stop->x) - view_rect.x;
4294         view_rect.width = MAX (start->y, stop->y) - view_rect.y;
4295
4296         n_pages = ev_page_cache_get_n_pages (view->page_cache);
4297
4298         for (i = 0; i < n_pages; i++) {
4299                 GdkRectangle page_area;
4300                 GtkBorder border;
4301
4302                 if (get_page_extents (view, i, &page_area, &border)) {
4303                         GdkRectangle overlap;
4304
4305                         if (gdk_rectangle_intersect (&page_area, &view_rect, &overlap)) {
4306                                 EvViewSelection *selection;
4307
4308                                 selection = g_new0 (EvViewSelection, 1);
4309                                 selection->page = i;
4310                                 view_rect_to_doc_rect (view, &overlap, &page_area,
4311                                                        &(selection->rect));
4312
4313                                 list = g_list_append (list, selection);
4314                         }
4315                 }
4316         }
4317
4318         return list;
4319 }
4320
4321 static gboolean
4322 gdk_rectangle_point_in (GdkRectangle *rectangle,
4323                         GdkPoint     *point)
4324 {
4325         return rectangle->x <= point->x &&
4326                 rectangle->y <= point->y &&
4327                 point->x < rectangle->x + rectangle->width &&
4328                 point->y < rectangle->y + rectangle->height;
4329 }
4330
4331 static GList *
4332 compute_new_selection_text (EvView   *view,
4333                             GdkPoint *start,
4334                             GdkPoint *stop)
4335 {
4336         int n_pages, i, first, last;
4337         GList *list = NULL;
4338         EvViewSelection *selection;
4339         gint width, height;
4340         int start_page, end_page;
4341
4342         g_assert (view->selection_mode == EV_VIEW_SELECTION_TEXT);
4343
4344         n_pages = ev_page_cache_get_n_pages (view->page_cache);
4345
4346         /* First figure out the range of pages the selection
4347          * affects. */
4348         first = n_pages;
4349         last = 0;
4350         if (view->continuous) {
4351                 start_page = 0;
4352                 end_page = n_pages;
4353         } else if (view->dual_page) {
4354                 start_page = view->start_page;
4355                 end_page = view->end_page + 1;
4356         } else {
4357                 start_page = view->current_page;
4358                 end_page = view->current_page + 1;
4359         }
4360
4361         for (i = start_page; i < end_page; i++) {
4362                 GdkRectangle page_area;
4363                 GtkBorder border;
4364
4365                 get_page_extents (view, i, &page_area, &border);
4366                 if (gdk_rectangle_point_in (&page_area, start) ||
4367                     gdk_rectangle_point_in (&page_area, stop)) {
4368                         if (first == n_pages)
4369                                 first = i;
4370                         last = i;
4371                 }
4372
4373         }
4374
4375
4376
4377         /* Now create a list of EvViewSelection's for the affected
4378          * pages.  This could be an empty list, a list of just one
4379          * page or a number of pages.*/
4380         for (i = first; i < last + 1; i++) {
4381                 GdkRectangle page_area;
4382                 GtkBorder border;
4383                 GdkPoint *point;
4384
4385                 ev_page_cache_get_size (view->page_cache, i,
4386                                         view->rotation,
4387                                         1.0, &width, &height);
4388
4389                 selection = g_new0 (EvViewSelection, 1);
4390                 selection->page = i;
4391                 selection->rect.x1 = selection->rect.y1 = 0;
4392                 selection->rect.x2 = width;
4393                 selection->rect.y2 = height;
4394
4395                 get_page_extents (view, i, &page_area, &border);
4396
4397                 if (gdk_rectangle_point_in (&page_area, start))
4398                         point = start;
4399                 else
4400                         point = stop;
4401
4402                 if (i == first)
4403                         view_point_to_doc_point (view, point, &page_area,
4404                                                  &selection->rect.x1,
4405                                                  &selection->rect.y1);
4406
4407                 /* If the selection is contained within just one page,
4408                  * make sure we don't write 'start' into both points
4409                  * in selection->rect. */
4410                 if (first == last)
4411                         point = stop;
4412
4413                 if (i == last)
4414                         view_point_to_doc_point (view, point, &page_area,
4415                                                  &selection->rect.x2,
4416                                                  &selection->rect.y2);
4417
4418                 list = g_list_append (list, selection);
4419         }
4420
4421         return list;
4422 }
4423
4424 /* This function takes the newly calculated list, and figures out which regions
4425  * have changed.  It then queues a redraw approporiately.
4426  */
4427 static void
4428 merge_selection_region (EvView *view,
4429                         GList  *new_list)
4430 {
4431         GList *old_list;
4432         GList *new_list_ptr, *old_list_ptr;
4433
4434         /* Update the selection */
4435         old_list = ev_pixbuf_cache_get_selection_list (view->pixbuf_cache);
4436         g_list_foreach (view->selection_info.selections, (GFunc)selection_free, NULL);
4437         view->selection_info.selections = new_list;
4438         ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, new_list);
4439         g_object_notify (G_OBJECT (view), "has-selection");
4440
4441         new_list_ptr = new_list;
4442         old_list_ptr = old_list;
4443
4444         while (new_list_ptr || old_list_ptr) {
4445                 EvViewSelection *old_sel, *new_sel;
4446                 int cur_page;
4447                 GdkRegion *region = NULL;
4448
4449                 new_sel = (new_list_ptr) ? (new_list_ptr->data) : NULL;
4450                 old_sel = (old_list_ptr) ? (old_list_ptr->data) : NULL;
4451
4452                 /* Assume that the lists are in order, and we run through them
4453                  * comparing them, one page at a time.  We come out with the
4454                  * first page we see. */
4455                 if (new_sel && old_sel) {
4456                         if (new_sel->page < old_sel->page) {
4457                                 new_list_ptr = new_list_ptr->next;
4458                                 old_sel = NULL;
4459                         } else if (new_sel->page > old_sel->page) {
4460                                 old_list_ptr = old_list_ptr->next;
4461                                 new_sel = NULL;
4462                         } else {
4463                                 new_list_ptr = new_list_ptr->next;
4464                                 old_list_ptr = old_list_ptr->next;
4465                         }
4466                 } else if (new_sel) {
4467                         new_list_ptr = new_list_ptr->next;
4468                 } else if (old_sel) {
4469                         old_list_ptr = old_list_ptr->next;
4470                 }
4471
4472                 g_assert (new_sel || old_sel);
4473
4474                 /* is the page we're looking at on the screen?*/
4475                 cur_page = new_sel ? new_sel->page : old_sel->page;
4476                 if (cur_page < view->start_page || cur_page > view->end_page)
4477                         continue;
4478
4479                 /* seed the cache with a new page.  We are going to need the new
4480                  * region too. */
4481                 if (new_sel) {
4482                         GdkRegion *tmp_region = NULL;
4483                         ev_pixbuf_cache_get_selection_pixbuf (view->pixbuf_cache,
4484                                                               cur_page,
4485                                                               view->scale,
4486                                                               &tmp_region);
4487                         if (tmp_region) {
4488                                 new_sel->covered_region = gdk_region_copy (tmp_region);
4489                         }
4490                 }
4491
4492                 /* Now we figure out what needs redrawing */
4493                 if (old_sel && new_sel) {
4494                         if (old_sel->covered_region &&
4495                             new_sel->covered_region) {
4496                                 /* We only want to redraw the areas that have
4497                                  * changed, so we xor the old and new regions
4498                                  * and redraw if it's different */
4499                                 region = gdk_region_copy (old_sel->covered_region);
4500                                 gdk_region_xor (region, new_sel->covered_region);
4501                                 if (gdk_region_empty (region)) {
4502                                         gdk_region_destroy (region);
4503                                         region = NULL;
4504                                 }
4505                         } else if (old_sel->covered_region) {
4506                                 region = gdk_region_copy (old_sel->covered_region);
4507                         } else if (new_sel->covered_region) {
4508                                 region = gdk_region_copy (new_sel->covered_region);
4509                         }
4510                 } else if (old_sel && !new_sel) {
4511                         if (old_sel->covered_region && !gdk_region_empty (old_sel->covered_region)) {
4512                                 region = gdk_region_copy (old_sel->covered_region);
4513                         }
4514                 } else if (!old_sel && new_sel) {
4515                         if (new_sel->covered_region && !gdk_region_empty (new_sel->covered_region)) {
4516                                 region = gdk_region_copy (new_sel->covered_region);
4517                         }
4518                 } else {
4519                         g_assert_not_reached ();
4520                 }
4521
4522                 /* Redraw the damaged region! */
4523                 if (region) {
4524                         GdkRectangle page_area;
4525                         GtkBorder border;
4526
4527                         get_page_extents (view, cur_page, &page_area, &border);
4528                         gdk_region_offset (region,
4529                                            page_area.x + border.left - view->scroll_x,
4530                                            page_area.y + border.top - view->scroll_y);
4531                         gdk_window_invalidate_region (GTK_WIDGET (view)->window, region, TRUE);
4532                         gdk_region_destroy (region);
4533                 }
4534         }
4535
4536         /* Free the old list, now that we're done with it. */
4537         g_list_foreach (old_list, (GFunc) selection_free, NULL);
4538 }
4539
4540 static void
4541 compute_selections (EvView   *view,
4542                     GdkPoint *start,
4543                     GdkPoint *stop)
4544 {
4545         GList *list;
4546
4547         if (view->selection_mode == EV_VIEW_SELECTION_RECTANGLE)
4548                 list = compute_new_selection_rect (view, start, stop);
4549         else
4550                 list = compute_new_selection_text (view, start, stop);
4551         merge_selection_region (view, list);
4552 }
4553
4554 /* Free's the selection.  It's up to the caller to queue redraws if needed.
4555  */
4556 static void
4557 selection_free (EvViewSelection *selection)
4558 {
4559         if (selection->covered_region)
4560                 gdk_region_destroy (selection->covered_region);
4561         g_free (selection);
4562 }
4563
4564 static void
4565 clear_selection (EvView *view)
4566 {
4567         g_list_foreach (view->selection_info.selections, (GFunc)selection_free, NULL);
4568         view->selection_info.selections = NULL;
4569         view->selection_info.in_selection = FALSE;
4570         if (view->pixbuf_cache)
4571                 ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, NULL);
4572         g_object_notify (G_OBJECT (view), "has-selection");
4573 }
4574
4575
4576 void
4577 ev_view_select_all (EvView *view)
4578 {
4579         int n_pages, i;
4580
4581         /* Disable selection on rotated pages for the 0.4.0 series */
4582         if (view->rotation != 0)
4583                 return;
4584
4585         clear_selection (view);
4586
4587         n_pages = ev_page_cache_get_n_pages (view->page_cache);
4588         for (i = 0; i < n_pages; i++) {
4589                 int width, height;
4590                 EvViewSelection *selection;
4591
4592                 ev_page_cache_get_size (view->page_cache,
4593                                         i,
4594                                         view->rotation,
4595                                         1.0, &width, &height);
4596
4597                 selection = g_new0 (EvViewSelection, 1);
4598                 selection->page = i;
4599                 selection->rect.x1 = selection->rect.y1 = 0;
4600                 selection->rect.x2 = width;
4601                 selection->rect.y2 = height;
4602
4603                 view->selection_info.selections = g_list_append (view->selection_info.selections, selection);
4604         }
4605
4606         ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, view->selection_info.selections);
4607         g_object_notify (G_OBJECT (view), "has-selection");
4608         gtk_widget_queue_draw (GTK_WIDGET (view));
4609 }
4610
4611 gboolean
4612 ev_view_get_has_selection (EvView *view)
4613 {
4614         return view->selection_info.selections != NULL;
4615 }
4616
4617 static char *
4618 get_selected_text (EvView *ev_view)
4619 {
4620         GString *text;
4621         GList *l;
4622
4623         text = g_string_new (NULL);
4624
4625         ev_document_doc_mutex_lock ();
4626
4627         for (l = ev_view->selection_info.selections; l != NULL; l = l->next) {
4628                 EvViewSelection *selection = (EvViewSelection *)l->data;
4629                 char *tmp;
4630
4631                 tmp = ev_document_get_text (ev_view->document,
4632                                             selection->page,
4633                                             &selection->rect);
4634                 g_string_append (text, tmp);
4635                 g_free (tmp);
4636         }
4637
4638         ev_document_doc_mutex_unlock ();
4639
4640         return g_string_free (text, FALSE);
4641 }
4642
4643 void
4644 ev_view_copy (EvView *ev_view)
4645 {
4646         GtkClipboard *clipboard;
4647         char *text;
4648
4649         if (!ev_document_can_get_text (ev_view->document)) {
4650                 return;
4651         }
4652
4653         text = get_selected_text (ev_view);
4654         clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view),
4655                                               GDK_SELECTION_CLIPBOARD);
4656         gtk_clipboard_set_text (clipboard, text, -1);
4657         g_free (text);
4658 }
4659
4660 static void
4661 ev_view_primary_get_cb (GtkClipboard     *clipboard,
4662                         GtkSelectionData *selection_data,
4663                         guint             info,
4664                         gpointer          data)
4665 {
4666         EvView *ev_view = EV_VIEW (data);
4667         char *text;
4668
4669         if (!ev_document_can_get_text (ev_view->document)) {
4670                 return;
4671         }
4672
4673         text = get_selected_text (ev_view);
4674         gtk_selection_data_set_text (selection_data, text, -1);
4675         g_free (text);
4676 }
4677
4678 static void
4679 ev_view_primary_clear_cb (GtkClipboard *clipboard,
4680                           gpointer      data)
4681 {
4682         EvView *view = EV_VIEW (data);
4683
4684         clear_selection (view);
4685 }
4686
4687 static void
4688 ev_view_update_primary_selection (EvView *ev_view)
4689 {
4690         GtkClipboard *clipboard;
4691
4692         clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view),
4693                                               GDK_SELECTION_PRIMARY);
4694
4695         if (ev_view->selection_info.selections) {
4696                 if (!gtk_clipboard_set_with_owner (clipboard,
4697                                                    clipboard_targets,
4698                                                    G_N_ELEMENTS (clipboard_targets),
4699                                                    ev_view_primary_get_cb,
4700                                                    ev_view_primary_clear_cb,
4701                                                    G_OBJECT (ev_view)))
4702                         ev_view_primary_clear_cb (clipboard, ev_view);
4703         } else {
4704                 if (gtk_clipboard_get_owner (clipboard) == G_OBJECT (ev_view))
4705                         gtk_clipboard_clear (clipboard);
4706         }
4707 }
4708
4709 /*** Cursor operations ***/
4710
4711 static GdkCursor *
4712 ev_view_create_invisible_cursor(void)
4713 {
4714        GdkBitmap *empty;
4715        GdkColor black = { 0, 0, 0, 0 };
4716        static char bits[] = { 0x00 };
4717
4718        empty = gdk_bitmap_create_from_data (NULL, bits, 1, 1);
4719
4720        return gdk_cursor_new_from_pixmap (empty, empty, &black, &black, 0, 0);
4721 }
4722
4723 static void
4724 ev_view_set_cursor (EvView *view, EvViewCursor new_cursor)
4725 {
4726         GdkCursor *cursor = NULL;
4727         GdkDisplay *display;
4728         GtkWidget *widget;
4729
4730         if (view->cursor == new_cursor) {
4731                 return;
4732         }
4733
4734         widget = gtk_widget_get_toplevel (GTK_WIDGET (view));
4735         display = gtk_widget_get_display (widget);
4736         view->cursor = new_cursor;
4737
4738         switch (new_cursor) {
4739                 case EV_VIEW_CURSOR_NORMAL:
4740                         gdk_window_set_cursor (widget->window, NULL);
4741                         break;
4742                 case EV_VIEW_CURSOR_IBEAM:
4743                         cursor = gdk_cursor_new_for_display (display, GDK_XTERM);
4744                         break;
4745                 case EV_VIEW_CURSOR_LINK:
4746                         cursor = gdk_cursor_new_for_display (display, GDK_HAND2);
4747                         break;
4748                 case EV_VIEW_CURSOR_WAIT:
4749                         cursor = gdk_cursor_new_for_display (display, GDK_WATCH);
4750                         break;
4751                 case EV_VIEW_CURSOR_HIDDEN:
4752                         cursor = ev_view_create_invisible_cursor ();
4753                         break;
4754                 case EV_VIEW_CURSOR_DRAG:
4755                         cursor = gdk_cursor_new_for_display (display, GDK_FLEUR);
4756                         break;
4757         }
4758
4759         if (cursor) {
4760                 gdk_window_set_cursor (widget->window, cursor);
4761                 gdk_cursor_unref (cursor);
4762                 gdk_flush();
4763         }
4764 }
4765
4766 void
4767 ev_view_hide_cursor (EvView *view)
4768 {
4769        ev_view_set_cursor (view, EV_VIEW_CURSOR_HIDDEN);
4770 }
4771
4772 void
4773 ev_view_show_cursor (EvView *view)
4774 {
4775        ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
4776 }
4777
4778 static void
4779 ev_view_reset_presentation_state (EvView *view)
4780 {
4781         if (!view->presentation ||
4782             view->presentation_state == EV_PRESENTATION_NORMAL)
4783                 return;
4784
4785         view->presentation_state = EV_PRESENTATION_NORMAL;
4786         gdk_window_set_background (GTK_WIDGET (view)->window,
4787                                    &GTK_WIDGET (view)->style->black);
4788         gtk_widget_queue_draw (GTK_WIDGET (view));
4789 }
4790
4791 gboolean
4792 ev_view_next_page (EvView *view)
4793 {
4794         int page, n_pages;
4795
4796         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
4797
4798         if (!view->page_cache)
4799                 return FALSE;
4800
4801         ev_view_presentation_transition_stop (view);
4802         ev_view_reset_presentation_state (view);
4803
4804         page = ev_page_cache_get_current_page (view->page_cache);
4805         n_pages = ev_page_cache_get_n_pages (view->page_cache);
4806
4807         if (view->dual_page && !view->presentation)
4808                 page = page + 2;
4809         else
4810                 page = page + 1;
4811
4812         if (page < n_pages) {
4813                 ev_page_cache_set_current_page (view->page_cache, page);
4814                 return TRUE;
4815         } else if (view->presentation && page == n_pages) {
4816                 view->presentation_state = EV_PRESENTATION_END;
4817                 gtk_widget_queue_draw (GTK_WIDGET (view));
4818                 return TRUE;
4819         } else if (view->dual_page && page == n_pages) {
4820                 ev_page_cache_set_current_page (view->page_cache, page - 1);
4821                 return TRUE;
4822         } else {
4823                 return FALSE;
4824         }
4825 }
4826
4827 gboolean
4828 ev_view_previous_page (EvView *view)
4829 {
4830         int page;
4831
4832         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
4833
4834         if (!view->page_cache)
4835                 return FALSE;
4836
4837         if (view->presentation &&
4838             view->presentation_state == EV_PRESENTATION_END) {
4839                 ev_view_reset_presentation_state (view);
4840                 return TRUE;
4841         }
4842
4843         ev_view_reset_presentation_state (view);
4844
4845         page = ev_page_cache_get_current_page (view->page_cache);
4846
4847         if (view->dual_page && !view->presentation)
4848                 page = page - 2;
4849         else
4850                 page = page - 1;
4851
4852         if (page >= 0) {
4853                 ev_page_cache_set_current_page (view->page_cache, page);
4854                 return TRUE;
4855         } else if (ev_view_get_dual_page (view) && page == -1) {
4856                 ev_page_cache_set_current_page (view->page_cache, 0);
4857                 return TRUE;
4858         } else {
4859                 return FALSE;
4860         }
4861 }
4862
4863 /*** Enum description for usage in signal ***/
4864
4865 GType
4866 ev_sizing_mode_get_type (void)
4867 {
4868   static GType etype = 0;
4869   if (etype == 0) {
4870     static const GEnumValue values[] = {
4871       { EV_SIZING_FIT_WIDTH, "EV_SIZING_FIT_WIDTH", "fit-width" },
4872       { EV_SIZING_BEST_FIT, "EV_SIZING_BEST_FIT", "best-fit" },
4873       { EV_SIZING_FREE, "EV_SIZING_FREE", "free" },
4874       { 0, NULL, NULL }
4875     };
4876     etype = g_enum_register_static ("EvSizingMode", values);
4877   }
4878   return etype;
4879 }
4880
4881 GType
4882 ev_scroll_type_get_type (void)
4883 {
4884   static GType etype = 0;
4885   if (etype == 0) {
4886     static const GEnumValue values[] = {
4887       { EV_SCROLL_PAGE_FORWARD, "EV_SCROLL_PAGE_FORWARD", "scroll-page-forward" },
4888       { EV_SCROLL_PAGE_BACKWARD, "EV_SCROLL_PAGE_BACKWARD", "scroll-page-backward" },
4889       { EV_SCROLL_STEP_FORWARD, "EV_SCROLL_STEP_FORWARD", "scroll-step-forward" },
4890       { EV_SCROLL_STEP_FORWARD, "EV_SCROLL_STEP_FORWARD", "scroll-step-forward" },
4891       { EV_SCROLL_STEP_UP, "EV_SCROLL_STEP_UP", "scroll-step-up" },
4892       { EV_SCROLL_STEP_DOWN, "EV_SCROLL_STEP_DOWN", "scroll-step-down" },
4893       { 0, NULL, NULL }
4894     };
4895     etype = g_enum_register_static ("EvScrollType", values);
4896   }
4897   return etype;
4898 }