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
  31 #include "ev-marshal.h"
  32 #include "ev-view.h"
  33 #include "ev-view-private.h"
  34 #include "ev-utils.h"
  35 #include "ev-selection.h"
  36 #include "ev-document-links.h"
  37 #include "ev-document-images.h"
  38 #include "ev-document-find.h"
  39 #include "ev-document-transition.h"
  40 #include "ev-document-misc.h"
  41 #include "ev-job-queue.h"
  42 #include "ev-page-cache.h"
  43 #include "ev-pixbuf-cache.h"
  44 #include "ev-tooltip.h"
  45 #include "ev-application.h"
  46
  47 #define EV_VIEW_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass), EV_TYPE_VIEW, EvViewClass))
  48 #define EV_IS_VIEW_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), EV_TYPE_VIEW))
  49 #define EV_VIEW_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj), EV_TYPE_VIEW, EvViewClass))
  50
  51
  52 enum {
  53         PROP_0,
  54         PROP_STATUS,
  55         PROP_FIND_STATUS,
  56         PROP_CONTINUOUS,
  57         PROP_DUAL_PAGE,
  58         PROP_FULLSCREEN,
  59         PROP_PRESENTATION,
  60         PROP_SIZING_MODE,
  61         PROP_ZOOM,
  62         PROP_ROTATION,
  63         PROP_HAS_SELECTION,
  64 };
  65
  66 enum {
  67         SIGNAL_BINDING_ACTIVATED,
  68         SIGNAL_ZOOM_INVALID,
  69         SIGNAL_HANDLE_LINK,
  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 static 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                         g_signal_emit (view, signals[SIGNAL_HANDLE_LINK], 0, link);
1358
1359                         dest = ev_link_action_get_dest (action);
1360                         ev_view_goto_dest (view, dest);
1361                 }
1362                         break;
1363                 case EV_LINK_ACTION_TYPE_GOTO_REMOTE:
1364                 case EV_LINK_ACTION_TYPE_EXTERNAL_URI:
1365                 case EV_LINK_ACTION_TYPE_LAUNCH:
1366                 case EV_LINK_ACTION_TYPE_NAMED:
1367                         g_signal_emit (view, signals[SIGNAL_EXTERNAL_LINK], 0, action);
1368                         break;
1369         }
1370 }
1371
1372 gchar *
1373 ev_view_page_label_from_dest (EvView *view, EvLinkDest *dest)
1374 {
1375         EvLinkDestType type;
1376         gchar *msg = NULL;
1377
1378         type = ev_link_dest_get_dest_type (dest);
1379
1380         switch (type) {
1381                 case EV_LINK_DEST_TYPE_NAMED: {
1382                         EvLinkDest  *dest2;
1383                         const gchar *named_dest;
1384
1385                         named_dest = ev_link_dest_get_named_dest (dest);
1386                         dest2 = ev_document_links_find_link_dest (EV_DOCUMENT_LINKS (view->document),
1387                                                                   named_dest);
1388                         if (dest2) {
1389                                 msg = ev_page_cache_get_page_label (view->page_cache,
1390                                                                     ev_link_dest_get_page (dest2));
1391                                 g_object_unref (dest2);
1392                         }
1393                 }
1394
1395                         break;
1396                 case EV_LINK_DEST_TYPE_PAGE_LABEL: {
1397                         msg = g_strdup (ev_link_dest_get_page_label (dest));
1398                 }
1399                         break;
1400                 default:
1401                         msg = ev_page_cache_get_page_label (view->page_cache,
1402                                                             ev_link_dest_get_page (dest));
1403         }
1404
1405         return msg;
1406 }
1407
1408 static char *
1409 tip_from_action_named (EvLinkAction *action)
1410 {
1411         const gchar *name = ev_link_action_get_name (action);
1412
1413         if (g_ascii_strcasecmp (name, "FirstPage") == 0) {
1414                 return g_strdup (_("Go to first page"));
1415         } else if (g_ascii_strcasecmp (name, "PrevPage") == 0) {
1416                 return g_strdup (_("Go to previous page"));
1417         } else if (g_ascii_strcasecmp (name, "NextPage") == 0) {
1418                 return g_strdup (_("Go to next page"));
1419         } else if (g_ascii_strcasecmp (name, "LastPage") == 0) {
1420                 return g_strdup (_("Go to last page"));
1421         } else if (g_ascii_strcasecmp (name, "GoToPage") == 0) {
1422                 return g_strdup (_("Go to page"));
1423         } else if (g_ascii_strcasecmp (name, "Find") == 0) {
1424                 return g_strdup (_("Find"));
1425         }
1426
1427         return NULL;
1428 }
1429
1430 static char *
1431 tip_from_link (EvView *view, EvLink *link)
1432 {
1433         EvLinkAction *action;
1434         EvLinkActionType type;
1435         char *msg = NULL;
1436         char *page_label;
1437         const char *title;
1438
1439         action = ev_link_get_action (link);
1440         title = ev_link_get_title (link);
1441
1442         if (!action)
1443                 return title ? g_strdup (title) : NULL;
1444
1445         type = ev_link_action_get_action_type (action);
1446
1447         switch (type) {
1448                 case EV_LINK_ACTION_TYPE_GOTO_DEST:
1449                         page_label = ev_view_page_label_from_dest (view,
1450                                                                    ev_link_action_get_dest (action));
1451                         msg = g_strdup_printf (_("Go to page %s"), page_label);
1452                         g_free (page_label);
1453                         break;
1454                 case EV_LINK_ACTION_TYPE_GOTO_REMOTE:
1455                         if (title) {
1456                                 msg = g_strdup_printf (_("Go to %s on file “%s”"), title,
1457                                                        ev_link_action_get_filename (action));
1458                         } else {
1459                                 msg = g_strdup_printf (_("Go to file “%s”"),
1460                                                        ev_link_action_get_filename (action));
1461                         }
1462
1463                         break;
1464                 case EV_LINK_ACTION_TYPE_EXTERNAL_URI:
1465                         msg = g_strdup (ev_link_action_get_uri (action));
1466                         break;
1467                 case EV_LINK_ACTION_TYPE_LAUNCH:
1468                         msg = g_strdup_printf (_("Launch %s"),
1469                                                ev_link_action_get_filename (action));
1470                         break;
1471                 case EV_LINK_ACTION_TYPE_NAMED:
1472                         msg = tip_from_action_named (action);
1473                         break;
1474                 default:
1475                         if (title)
1476                                 msg = g_strdup (title);
1477                         break;
1478         }
1479
1480         return msg;
1481 }
1482
1483 static void
1484 handle_link_over_xy (EvView *view, gint x, gint y)
1485 {
1486         EvLink *link;
1487
1488         link = ev_view_get_link_at_location (view, x, y);
1489
1490         if (view->link_tooltip == NULL) {
1491                 view->link_tooltip = ev_tooltip_new (GTK_WIDGET (view));
1492         }
1493
1494         if (view->hovered_link != link) {
1495                 view->hovered_link = link;
1496                 ev_tooltip_deactivate (EV_TOOLTIP (view->link_tooltip));
1497         }
1498
1499         if (link) {
1500                 char *msg = tip_from_link (view, link);
1501
1502                 if (msg && g_utf8_validate (msg, -1, NULL)) {
1503                         EvTooltip *tooltip = EV_TOOLTIP (view->link_tooltip);
1504
1505                         ev_tooltip_set_position (tooltip, x, y);
1506                         ev_tooltip_set_text (tooltip, msg);
1507                         ev_tooltip_activate (tooltip);
1508                 }
1509                 g_free (msg);
1510
1511                 ev_view_set_cursor (view, EV_VIEW_CURSOR_LINK);
1512         } else if (location_in_text (view, x + view->scroll_x, y + view->scroll_y)) {
1513                 ev_view_set_cursor (view, EV_VIEW_CURSOR_IBEAM);
1514         } else {
1515                 ev_view_set_status (view, NULL);
1516                 if (view->cursor == EV_VIEW_CURSOR_LINK ||
1517                     view->cursor == EV_VIEW_CURSOR_IBEAM)
1518                         ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
1519         }
1520 }
1521
1522 /*** Images ***/
1523 static EvImage *
1524 ev_view_get_image_at_location (EvView  *view,
1525                                gdouble  x,
1526                                gdouble  y)
1527 {
1528         gint page = -1;
1529         gint x_offset = 0, y_offset = 0;
1530         gint x_new = 0, y_new = 0;
1531         GList *image_mapping;
1532
1533         if (!EV_IS_DOCUMENT_IMAGES (view->document))
1534                 return NULL;
1535
1536         x += view->scroll_x;
1537         y += view->scroll_y;
1538
1539         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1540
1541         if (page == -1)
1542                 return NULL;
1543
1544         if (get_doc_point_from_offset (view, page, x_offset,
1545                                        y_offset, &x_new, &y_new) == FALSE)
1546                 return NULL;
1547
1548         image_mapping = ev_pixbuf_cache_get_image_mapping (view->pixbuf_cache, page);
1549
1550         if (image_mapping)
1551                 return ev_image_mapping_find (image_mapping, x_new, y_new);
1552         else
1553                 return NULL;
1554 }
1555
1556 /*** GtkWidget implementation ***/
1557
1558 static void
1559 ev_view_size_request_continuous_dual_page (EvView         *view,
1560                                            GtkRequisition *requisition)
1561 {
1562         int max_width;
1563         gint n_pages;
1564         GtkBorder border;
1565
1566         ev_page_cache_get_max_width (view->page_cache, view->rotation,
1567                                      view->scale, &max_width);
1568         compute_border (view, max_width, max_width, &border);
1569
1570         n_pages = ev_page_cache_get_n_pages (view->page_cache) + 1;
1571
1572         requisition->width = (max_width + border.left + border.right) * 2 + (view->spacing * 3);
1573         get_page_y_offset (view, n_pages, view->scale, &requisition->height);
1574
1575         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
1576                 requisition->width = 1;
1577         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
1578                 requisition->width = 1;
1579                 /* FIXME: This could actually be set on one page docs or docs
1580                  * with a strange aspect ratio. */
1581                 /* requisition->height = 1;*/
1582         }
1583 }
1584
1585 static void
1586 ev_view_size_request_continuous (EvView         *view,
1587                                  GtkRequisition *requisition)
1588 {
1589         int max_width;
1590         int n_pages;
1591         GtkBorder border;
1592
1593
1594         ev_page_cache_get_max_width (view->page_cache, view->rotation,
1595                                      view->scale, &max_width);
1596         n_pages = ev_page_cache_get_n_pages (view->page_cache);
1597         compute_border (view, max_width, max_width, &border);
1598
1599         requisition->width = max_width + (view->spacing * 2) + border.left + border.right;
1600         get_page_y_offset (view, n_pages, view->scale, &requisition->height);
1601
1602         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
1603                 requisition->width = 1;
1604         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
1605                 requisition->width = 1;
1606                 /* FIXME: This could actually be set on one page docs or docs
1607                  * with a strange aspect ratio. */
1608                 /* requisition->height = 1;*/
1609         }
1610 }
1611
1612 static void
1613 ev_view_size_request_dual_page (EvView         *view,
1614                                 GtkRequisition *requisition)
1615 {
1616         GtkBorder border;
1617         gint width, height;
1618
1619         /* Find the largest of the two. */
1620         ev_page_cache_get_size (view->page_cache,
1621                                 view->current_page,
1622                                 view->rotation,
1623                                 view->scale,
1624                                 &width, &height);
1625         if (view->current_page + 1 < ev_page_cache_get_n_pages (view->page_cache)) {
1626                 gint width_2, height_2;
1627                 ev_page_cache_get_size (view->page_cache,
1628                                         view->current_page + 1,
1629                                         view->rotation,
1630                                         view->scale,
1631                                         &width_2, &height_2);
1632                 if (width_2 > width) {
1633                         width = width_2;
1634                         height = height_2;
1635                 }
1636         }
1637         compute_border (view, width, height, &border);
1638
1639         requisition->width = ((width + border.left + border.right) * 2) +
1640                 (view->spacing * 3);
1641         requisition->height = (height + border.top + border.bottom) +
1642                 (view->spacing * 2);
1643
1644         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
1645                 requisition->width = 1;
1646         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
1647                 requisition->width = 1;
1648                 requisition->height = 1;
1649         }
1650 }
1651
1652 static void
1653 ev_view_size_request_single_page (EvView         *view,
1654                                   GtkRequisition *requisition)
1655 {
1656         GtkBorder border;
1657         gint width, height;
1658
1659         ev_page_cache_get_size (view->page_cache,
1660                                 view->current_page,
1661                                 view->rotation,
1662                                 view->scale,
1663                                 &width, &height);
1664         compute_border (view, width, height, &border);
1665
1666         requisition->width = width + border.left + border.right + (2 * view->spacing);
1667         requisition->height = height + border.top + border.bottom + (2 * view->spacing);
1668
1669         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
1670                 requisition->width = 1;
1671                 requisition->height = height + border.top + border.bottom + (2 * view->spacing);
1672         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
1673                 requisition->width = 1;
1674                 requisition->height = 1;
1675         }
1676 }
1677
1678 static void
1679 ev_view_size_request (GtkWidget      *widget,
1680                       GtkRequisition *requisition)
1681 {
1682         EvView *view = EV_VIEW (widget);
1683
1684         if (view->document == NULL) {
1685                 requisition->width = 1;
1686                 requisition->height = 1;
1687                 return;
1688         }
1689
1690         if (view->presentation) {
1691                 requisition->width = 1;
1692                 requisition->height = 1;
1693                 return;
1694         }
1695
1696         if (view->continuous && view->dual_page)
1697                 ev_view_size_request_continuous_dual_page (view, requisition);
1698         else if (view->continuous)
1699                 ev_view_size_request_continuous (view, requisition);
1700         else if (view->dual_page)
1701                 ev_view_size_request_dual_page (view, requisition);
1702         else
1703                 ev_view_size_request_single_page (view, requisition);
1704 }
1705
1706 static void
1707 ev_view_size_allocate (GtkWidget      *widget,
1708                        GtkAllocation  *allocation)
1709 {
1710         EvView *view = EV_VIEW (widget);
1711
1712         GTK_WIDGET_CLASS (ev_view_parent_class)->size_allocate (widget, allocation);
1713
1714         if (view->sizing_mode == EV_SIZING_FIT_WIDTH ||
1715             view->sizing_mode == EV_SIZING_BEST_FIT) {
1716
1717                 g_signal_emit (view, signals[SIGNAL_ZOOM_INVALID], 0);
1718
1719                 ev_view_size_request (widget, &widget->requisition);
1720         }
1721
1722         view_set_adjustment_values (view, GTK_ORIENTATION_HORIZONTAL);
1723         view_set_adjustment_values (view, GTK_ORIENTATION_VERTICAL);
1724
1725         if (view->document)
1726                 view_update_range_and_current_page (view);
1727
1728         view->pending_scroll = SCROLL_TO_KEEP_POSITION;
1729         view->pending_resize = FALSE;
1730 }
1731
1732 static void
1733 ev_view_realize (GtkWidget *widget)
1734 {
1735         EvView *view = EV_VIEW (widget);
1736         GdkWindowAttr attributes;
1737
1738         GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
1739
1740         attributes.window_type = GDK_WINDOW_CHILD;
1741         attributes.wclass = GDK_INPUT_OUTPUT;
1742         attributes.visual = gtk_widget_get_visual (widget);
1743         attributes.colormap = gtk_widget_get_colormap (widget);
1744
1745         attributes.x = widget->allocation.x;
1746         attributes.y = widget->allocation.y;
1747         attributes.width = widget->allocation.width;
1748         attributes.height = widget->allocation.height;
1749         attributes.event_mask = GDK_EXPOSURE_MASK |
1750                                 GDK_BUTTON_PRESS_MASK |
1751                                 GDK_BUTTON_RELEASE_MASK |
1752                                 GDK_SCROLL_MASK |
1753                                 GDK_KEY_PRESS_MASK |
1754                                 GDK_POINTER_MOTION_MASK |
1755                                 GDK_POINTER_MOTION_HINT_MASK |
1756                                 GDK_ENTER_NOTIFY_MASK |
1757                                 GDK_LEAVE_NOTIFY_MASK;
1758
1759         widget->window = gdk_window_new (gtk_widget_get_parent_window (widget),
1760                                          &attributes,
1761                                          GDK_WA_X | GDK_WA_Y |
1762                                          GDK_WA_COLORMAP |
1763                                          GDK_WA_VISUAL);
1764         gdk_window_set_user_data (widget->window, widget);
1765         widget->style = gtk_style_attach (widget->style, widget->window);
1766
1767         if (view->presentation)
1768                 gdk_window_set_background (widget->window, &widget->style->black);
1769         else
1770                 gdk_window_set_background (widget->window, &widget->style->mid [GTK_STATE_NORMAL]);
1771 }
1772
1773 static gboolean
1774 ev_view_scroll_event (GtkWidget *widget, GdkEventScroll *event)
1775 {
1776         EvView *view = EV_VIEW (widget);
1777         guint state;
1778
1779         state = event->state & gtk_accelerator_get_default_mod_mask ();
1780
1781         if (state == GDK_CONTROL_MASK && view->presentation == FALSE) {
1782                 ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1783
1784                 if (event->direction == GDK_SCROLL_UP ||
1785                     event->direction == GDK_SCROLL_LEFT) {
1786                         if (ev_view_can_zoom_in (view)) {
1787                                 ev_view_zoom_in (view);
1788                         }
1789                 } else {
1790                         if (ev_view_can_zoom_out (view)) {
1791                                 ev_view_zoom_out (view);
1792                         }
1793                 }
1794
1795                 return TRUE;
1796         }
1797
1798         view->jump_to_find_result = FALSE;
1799         /* Shift+Wheel scrolls the in the perpendicular direction */
1800         if (state & GDK_SHIFT_MASK) {
1801                 if (event->direction == GDK_SCROLL_UP)
1802                         event->direction = GDK_SCROLL_LEFT;
1803                 if (event->direction == GDK_SCROLL_LEFT)
1804                         event->direction = GDK_SCROLL_UP;
1805                 if (event->direction == GDK_SCROLL_DOWN)
1806                         event->direction = GDK_SCROLL_RIGHT;
1807                 if (event->direction == GDK_SCROLL_RIGHT)
1808                         event->direction = GDK_SCROLL_DOWN;
1809
1810                 event->state &= ~GDK_SHIFT_MASK;
1811                 state &= ~GDK_SHIFT_MASK;
1812         }
1813
1814         if (state == 0 && view->presentation) {
1815                 switch (event->direction) {
1816                         case GDK_SCROLL_DOWN:
1817                         case GDK_SCROLL_RIGHT:
1818                                 ev_view_next_page (view);
1819                                 break;
1820                         case GDK_SCROLL_UP:
1821                         case GDK_SCROLL_LEFT:
1822                                 ev_view_previous_page (view);
1823                                 break;
1824                 }
1825
1826                 return TRUE;
1827         }
1828
1829         return FALSE;
1830 }
1831
1832 static EvViewSelection *
1833 find_selection_for_page (EvView *view,
1834                          gint    page)
1835 {
1836         GList *list;
1837
1838         for (list = view->selection_info.selections; list != NULL; list = list->next) {
1839                 EvViewSelection *selection;
1840
1841                 selection = (EvViewSelection *) list->data;
1842
1843                 if (selection->page == page)
1844                         return selection;
1845         }
1846
1847         return NULL;
1848 }
1849
1850 static void
1851 draw_end_presentation_page (EvView       *view,
1852                             GdkRectangle *page_area)
1853 {
1854         PangoLayout *layout;
1855         PangoFontDescription *font_desc;
1856         gchar *markup;
1857         const gchar *text = _("End of presentation. Press Escape to exit.");
1858
1859         if (view->presentation_state != EV_PRESENTATION_END)
1860                 return;
1861
1862         layout = gtk_widget_create_pango_layout (GTK_WIDGET (view), NULL);
1863         markup = g_strdup_printf ("<span foreground=\"white\">%s</span>", text);
1864         pango_layout_set_markup (layout, markup, -1);
1865         g_free (markup);
1866
1867         font_desc = pango_font_description_new ();
1868         pango_font_description_set_size (font_desc, 16 * PANGO_SCALE);
1869         pango_layout_set_font_description (layout, font_desc);
1870
1871         gtk_paint_layout (GTK_WIDGET (view)->style,
1872                           GTK_WIDGET (view)->window,
1873                           GTK_WIDGET_STATE (view),
1874                           FALSE,
1875                           page_area,
1876                           GTK_WIDGET (view),
1877                           NULL,
1878                           page_area->x + 15,
1879                           page_area->y + 15,
1880                           layout);
1881
1882         pango_font_description_free (font_desc);
1883         g_object_unref (layout);
1884 }
1885
1886 static gboolean
1887 ev_view_expose_event (GtkWidget      *widget,
1888                       GdkEventExpose *event)
1889 {
1890         EvView *view = EV_VIEW (widget);
1891         int i;
1892
1893         if (view->presentation) {
1894                 switch (view->presentation_state) {
1895                         case EV_PRESENTATION_END: {
1896                                 GdkRectangle area = {0};
1897
1898                                 area.width = widget->allocation.width;
1899                                 area.height = widget->allocation.height;
1900
1901                                 draw_end_presentation_page (view, &area);
1902                         }
1903                                 return FALSE;
1904                         case EV_PRESENTATION_BLACK:
1905                         case EV_PRESENTATION_WHITE:
1906                                 return FALSE;
1907                         case EV_PRESENTATION_NORMAL:
1908                         default:
1909                                 break;
1910                 }
1911         } else if (view->loading) {
1912                 GdkRectangle area = {0};
1913
1914                 area.width = widget->allocation.width;
1915                 area.height = widget->allocation.height;
1916
1917                 draw_loading_text (view,
1918                                    &area,
1919                                    &(event->area));
1920         }
1921
1922         if (view->document == NULL)
1923                 return FALSE;
1924
1925         for (i = view->start_page; i <= view->end_page; i++) {
1926                 GdkRectangle page_area;
1927                 GtkBorder border;
1928                 gboolean page_ready = TRUE;
1929
1930                 if (!get_page_extents (view, i, &page_area, &border))
1931                         continue;
1932
1933                 page_area.x -= view->scroll_x;
1934                 page_area.y -= view->scroll_y;
1935
1936                 draw_one_page (view, i, &page_area, &border, &(event->area), &page_ready);
1937
1938                 if (page_ready && EV_IS_DOCUMENT_FIND (view->document))
1939                         highlight_find_results (view, i);
1940         }
1941
1942         return FALSE;
1943 }
1944
1945 static gboolean
1946 ev_view_do_popup_menu (EvView *view,
1947                        gdouble x,
1948                        gdouble y)
1949 {
1950         EvLink  *link;
1951         EvImage *image;
1952
1953         image = ev_view_get_image_at_location (view, x, y);
1954         if (image) {
1955                 g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, image);
1956                 return TRUE;
1957         }
1958
1959         link = ev_view_get_link_at_location (view, x, y);
1960         if (link) {
1961                 g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, link);
1962                 return TRUE;
1963         }
1964
1965         g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, NULL);
1966
1967         return TRUE;
1968 }
1969
1970 static gboolean
1971 ev_view_popup_menu (GtkWidget *widget)
1972 {
1973         gint x, y;
1974
1975         gtk_widget_get_pointer (widget, &x, &y);
1976         return ev_view_do_popup_menu (EV_VIEW (widget), x, y);
1977 }
1978
1979 static gboolean
1980 ev_view_button_press_event (GtkWidget      *widget,
1981                             GdkEventButton *event)
1982 {
1983         EvView *view = EV_VIEW (widget);
1984
1985         if (!view->document)
1986                 return FALSE;
1987
1988         if (!GTK_WIDGET_HAS_FOCUS (widget)) {
1989                 gtk_widget_grab_focus (widget);
1990         }
1991
1992         view->pressed_button = event->button;
1993         view->selection_info.in_drag = FALSE;
1994
1995         switch (event->button) {
1996                 case 1: {
1997                         EvImage *image;
1998
1999                         if (view->selection_info.selections) {
2000                                 if (location_in_selected_text (view,
2001                                                                event->x + view->scroll_x,
2002                                                                event->y + view->scroll_y)) {
2003                                         view->selection_info.in_drag = TRUE;
2004                                 } else {
2005                                         clear_selection (view);
2006
2007                                         view->selection_info.start.x = event->x + view->scroll_x;
2008                                         view->selection_info.start.y = event->y + view->scroll_y;
2009                                 }
2010
2011                                 gtk_widget_queue_draw (widget);
2012                         } else if (!location_in_text (view, event->x + view->scroll_x, event->y + view->scroll_y) &&
2013                                    (image = ev_view_get_image_at_location (view, event->x, event->y))) {
2014                                 if (view->image_dnd_info.image)
2015                                         g_object_unref (view->image_dnd_info.image);
2016                                 view->image_dnd_info.image = g_object_ref (image);
2017                                 view->image_dnd_info.in_drag = TRUE;
2018
2019                                 view->image_dnd_info.start.x = event->x + view->scroll_x;
2020                                 view->image_dnd_info.start.y = event->y + view->scroll_y;
2021                         } else {
2022                                 view->selection_info.start.x = event->x + view->scroll_x;
2023                                 view->selection_info.start.y = event->y + view->scroll_y;
2024                         }
2025                 }
2026                         return TRUE;
2027                 case 2:
2028                         /* use root coordinates as reference point because
2029                          * scrolling changes window relative coordinates */
2030                         view->drag_info.start.x = event->x_root;
2031                         view->drag_info.start.y = event->y_root;
2032                         view->drag_info.hadj = gtk_adjustment_get_value (view->hadjustment);
2033                         view->drag_info.vadj = gtk_adjustment_get_value (view->vadjustment);
2034
2035                         ev_view_set_cursor (view, EV_VIEW_CURSOR_DRAG);
2036
2037                         return TRUE;
2038                 case 3:
2039                         return ev_view_do_popup_menu (view, event->x, event->y);
2040         }
2041
2042         return FALSE;
2043 }
2044
2045 /*** Drag and Drop ***/
2046 static void
2047 ev_view_drag_data_get (GtkWidget        *widget,
2048                        GdkDragContext   *context,
2049                        GtkSelectionData *selection_data,
2050                        guint             info,
2051                        guint             time)
2052 {
2053         EvView *view = EV_VIEW (widget);
2054
2055         switch (info) {
2056                 case TARGET_DND_TEXT:
2057                         if (view->selection_info.selections &&
2058                             ev_document_can_get_text (view->document)) {
2059                                 gchar *text;
2060
2061                                 text = get_selected_text (view);
2062
2063                                 gtk_selection_data_set_text (selection_data,
2064                                                              text,
2065                                                              strlen (text));
2066
2067                                 g_free (text);
2068                         }
2069                         break;
2070                 case TARGET_DND_IMAGE:
2071                         if (view->image_dnd_info.image) {
2072                                 GdkPixbuf *pixbuf;
2073
2074                                 pixbuf = ev_image_get_pixbuf (view->image_dnd_info.image);
2075                                 gtk_selection_data_set_pixbuf (selection_data, pixbuf);
2076                         }
2077                         break;
2078                 case TARGET_DND_URI:
2079                         if (view->image_dnd_info.image) {
2080                                 const gchar *tmp_uri;
2081                                 gchar      **uris;
2082
2083                                 tmp_uri = ev_image_save_tmp (view->image_dnd_info.image);
2084
2085                                 uris = g_new0 (gchar *, 2);
2086                                 uris[0] = (gchar *)tmp_uri;
2087
2088                                 gtk_selection_data_set_uris (selection_data, uris);
2089
2090                                 /* g_free instead of g_strfreev since tmp_uri is const */
2091                                 g_free (uris);
2092                         }
2093         }
2094 }
2095
2096 static gboolean
2097 ev_view_drag_motion (GtkWidget      *widget,
2098                      GdkDragContext *context,
2099                      gint            x,
2100                      gint            y,
2101                      guint           time)
2102 {
2103         if (gtk_drag_get_source_widget (context) == widget)
2104                 gdk_drag_status (context, 0, time);
2105         else
2106                 gdk_drag_status (context, context->suggested_action, time);
2107
2108         return TRUE;
2109 }
2110
2111 static void
2112 ev_view_drag_data_received (GtkWidget          *widget,
2113                             GdkDragContext     *context,
2114                             gint                x,
2115                             gint                y,
2116                             GtkSelectionData   *selection_data,
2117                             guint               info,
2118                             guint               time)
2119 {
2120         gchar  **uris;
2121         gint     i = 0;
2122         GSList  *uri_list = NULL;
2123
2124         uris = gtk_selection_data_get_uris (selection_data);
2125         if (!uris) {
2126                 gtk_drag_finish (context, FALSE, FALSE, time);
2127                 return;
2128         }
2129
2130         for (i = 0; uris[i]; i++) {
2131                 uri_list = g_slist_prepend (uri_list, (gpointer) uris[i]);
2132         }
2133
2134         ev_application_open_uri_list (EV_APP, uri_list,
2135                                       gtk_widget_get_screen (widget),
2136                                       0);
2137         gtk_drag_finish (context, TRUE, FALSE, time);
2138
2139         g_strfreev (uris);
2140         g_slist_free (uri_list);
2141 }
2142
2143
2144 static gboolean
2145 selection_update_idle_cb (EvView *view)
2146 {
2147         compute_selections (view, &view->selection_info.start, &view->motion);
2148         view->selection_update_id = 0;
2149         return FALSE;
2150 }
2151
2152 static gboolean
2153 selection_scroll_timeout_cb (EvView *view)
2154 {
2155         gint x, y, shift = 0;
2156         GtkWidget *widget = GTK_WIDGET (view);
2157
2158         gtk_widget_get_pointer (widget, &x, &y);
2159
2160         if (y > widget->allocation.height) {
2161                 shift = (y - widget->allocation.height) / 2;
2162         } else if (y < 0) {
2163                 shift = y / 2;
2164         }
2165
2166         if (shift)
2167                 gtk_adjustment_set_value (view->vadjustment,
2168                                           CLAMP (view->vadjustment->value + shift,
2169                                           view->vadjustment->lower,
2170                                           view->vadjustment->upper -
2171                                           view->vadjustment->page_size));
2172
2173         if (x > widget->allocation.width) {
2174                 shift = (x - widget->allocation.width) / 2;
2175         } else if (x < 0) {
2176                 shift = x / 2;
2177         }
2178
2179         if (shift)
2180                 gtk_adjustment_set_value (view->hadjustment,
2181                                           CLAMP (view->hadjustment->value + shift,
2182                                           view->hadjustment->lower,
2183                                           view->hadjustment->upper -
2184                                           view->hadjustment->page_size));
2185
2186         return TRUE;
2187 }
2188
2189 static gboolean
2190 ev_view_motion_notify_event (GtkWidget      *widget,
2191                              GdkEventMotion *event)
2192 {
2193         EvView *view = EV_VIEW (widget);
2194         gint x, y;
2195
2196         if (!view->document)
2197                 return FALSE;
2198
2199         if (event->is_hint || event->window != widget->window) {
2200             gtk_widget_get_pointer (widget, &x, &y);
2201         } else {
2202             x = event->x;
2203             y = event->y;
2204         }
2205
2206         if (view->selection_info.in_drag) {
2207                 if (gtk_drag_check_threshold (widget,
2208                                               view->selection_info.start.x,
2209                                               view->selection_info.start.y,
2210                                               x, y)) {
2211                         GtkTargetList *target_list = gtk_target_list_new (NULL, 0);
2212
2213                         gtk_target_list_add_text_targets (target_list, TARGET_DND_TEXT);
2214
2215                         gtk_drag_begin (widget, target_list,
2216                                         GDK_ACTION_COPY,
2217                                         1, (GdkEvent *)event);
2218
2219                         view->selection_info.in_drag = FALSE;
2220
2221                         gtk_target_list_unref (target_list);
2222
2223                         return TRUE;
2224                 }
2225         } else if (view->image_dnd_info.in_drag) {
2226                 if (gtk_drag_check_threshold (widget,
2227                                               view->selection_info.start.x,
2228                                               view->selection_info.start.y,
2229                                               x, y)) {
2230                         GtkTargetList *target_list = gtk_target_list_new (NULL, 0);
2231
2232                         gtk_target_list_add_uri_targets (target_list, TARGET_DND_URI);
2233                         gtk_target_list_add_image_targets (target_list, TARGET_DND_IMAGE, TRUE);
2234
2235                         gtk_drag_begin (widget, target_list,
2236                                         GDK_ACTION_COPY,
2237                                         1, (GdkEvent *)event);
2238
2239                         view->image_dnd_info.in_drag = FALSE;
2240
2241                         gtk_target_list_unref (target_list);
2242
2243                         return TRUE;
2244                 }
2245         }
2246
2247         /* For the Evince 0.4.x release, we limit selection to un-rotated
2248          * documents only.
2249          */
2250         if (view->pressed_button == 1 && view->rotation == 0) {
2251
2252                 /* Schedule timeout to scroll during selection and additionally
2253                  * scroll once to allow arbitrary speed. */
2254                 if (!view->selection_scroll_id)
2255                     view->selection_scroll_id = g_timeout_add (SCROLL_TIME, (GSourceFunc)selection_scroll_timeout_cb, view);
2256                 else
2257                     selection_scroll_timeout_cb (view);
2258
2259                 view->selection_info.in_selection = TRUE;
2260                 view->motion.x = x + view->scroll_x;
2261                 view->motion.y = y + view->scroll_y;
2262
2263                 /* Queue an idle to handle the motion.  We do this because
2264                  * handling any selection events in the motion could be slower
2265                  * than new motion events reach us.  We always put it in the
2266                  * idle to make sure we catch up and don't visibly lag the
2267                  * mouse. */
2268                 if (!view->selection_update_id)
2269                         view->selection_update_id = g_idle_add ((GSourceFunc)selection_update_idle_cb, view);
2270
2271                 return TRUE;
2272         } else if (view->pressed_button == 2) {
2273                 if (!view->drag_info.in_drag) {
2274                         gboolean start;
2275
2276                         start = gtk_drag_check_threshold (widget,
2277                                                           view->drag_info.start.x,
2278                                                           view->drag_info.start.y,
2279                                                           event->x_root,
2280                                                           event->y_root);
2281                         view->drag_info.in_drag = start;
2282                 }
2283
2284                 if (view->drag_info.in_drag) {
2285                         int dx, dy;
2286                         gdouble dhadj_value, dvadj_value;
2287
2288                         dx = event->x_root - view->drag_info.start.x;
2289                         dy = event->y_root - view->drag_info.start.y;
2290
2291                         dhadj_value = view->hadjustment->page_size *
2292                                       (gdouble)dx / widget->allocation.width;
2293                         dvadj_value = view->vadjustment->page_size *
2294                                       (gdouble)dy / widget->allocation.height;
2295
2296                         /* clamp scrolling to visible area */
2297                         gtk_adjustment_set_value (view->hadjustment,
2298                                                   MIN(view->drag_info.hadj - dhadj_value,
2299                                                       view->hadjustment->upper -
2300                                                       view->hadjustment->page_size));
2301                         gtk_adjustment_set_value (view->vadjustment,
2302                                                   MIN(view->drag_info.vadj - dvadj_value,
2303                                                       view->vadjustment->upper -
2304                                                       view->vadjustment->page_size));
2305
2306                         return TRUE;
2307                 }
2308         } else if (view->pressed_button <= 0) {
2309                 handle_link_over_xy (view, x, y);
2310                 return TRUE;
2311         }
2312
2313         return FALSE;
2314 }
2315
2316 static gboolean
2317 ev_view_button_release_event (GtkWidget      *widget,
2318                               GdkEventButton *event)
2319 {
2320         EvView *view = EV_VIEW (widget);
2321         EvLink *link;
2322
2323         if (view->pressed_button == 2) {
2324                 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
2325         }
2326
2327         if (view->document && view->pressed_button != 3) {
2328                 link = ev_view_get_link_at_location (view, event->x, event->y);
2329         } else {
2330                 link = NULL;
2331         }
2332
2333         view->pressed_button = -1;
2334         view->drag_info.in_drag = FALSE;
2335         view->image_dnd_info.in_drag = FALSE;
2336
2337         if (view->selection_scroll_id) {
2338             g_source_remove (view->selection_scroll_id);
2339             view->selection_scroll_id = 0;
2340         }
2341         if (view->selection_update_id) {
2342             g_source_remove (view->selection_update_id);
2343             view->selection_update_id = 0;
2344         }
2345
2346         if (view->selection_info.selections) {
2347                 ev_view_update_primary_selection (view);
2348
2349                 if (view->selection_info.in_drag) {
2350                         clear_selection (view);
2351                         gtk_widget_queue_draw (widget);
2352                 }
2353
2354                 view->selection_info.in_drag = FALSE;
2355         } else if (link) {
2356                 if (event->button == 2) {
2357                         EvLinkAction    *action;
2358                         EvLinkActionType type;
2359
2360                         action = ev_link_get_action (link);
2361                         if (!action)
2362                                 return FALSE;
2363
2364                         type = ev_link_action_get_action_type (action);
2365                         if (type == EV_LINK_ACTION_TYPE_GOTO_DEST) {
2366                                 g_signal_emit (view,
2367                                                signals[SIGNAL_EXTERNAL_LINK],
2368                                                0, action);
2369                         }
2370                 } else {
2371                         ev_view_handle_link (view, link);
2372                 }
2373         } else if (view->presentation) {
2374                 switch (event->button) {
2375                         case 1:
2376                                 ev_view_next_page (view);
2377                                 return TRUE;
2378                         case 3:
2379                                 ev_view_previous_page (view);
2380                                 return TRUE;
2381                 }
2382         }
2383
2384         return FALSE;
2385 }
2386
2387 /* Goto Window */
2388 /* Cut and paste from gtkwindow.c */
2389 static void
2390 send_focus_change (GtkWidget *widget,
2391                    gboolean   in)
2392 {
2393         GdkEvent *fevent = gdk_event_new (GDK_FOCUS_CHANGE);
2394
2395         g_object_ref (widget);
2396
2397         if (in)
2398                 GTK_WIDGET_SET_FLAGS (widget, GTK_HAS_FOCUS);
2399         else
2400                 GTK_WIDGET_UNSET_FLAGS (widget, GTK_HAS_FOCUS);
2401
2402         fevent->focus_change.type = GDK_FOCUS_CHANGE;
2403         fevent->focus_change.window = g_object_ref (widget->window);
2404         fevent->focus_change.in = in;
2405
2406         gtk_widget_event (widget, fevent);
2407
2408         g_object_notify (G_OBJECT (widget), "has-focus");
2409
2410         g_object_unref (widget);
2411         gdk_event_free (fevent);
2412 }
2413
2414 static void
2415 ev_view_goto_window_hide (EvView *view)
2416 {
2417         /* send focus-in event */
2418         send_focus_change (view->goto_entry, FALSE);
2419         gtk_widget_hide (view->goto_window);
2420         gtk_entry_set_text (GTK_ENTRY (view->goto_entry), "");
2421 }
2422
2423 static gboolean
2424 ev_view_goto_window_delete_event (GtkWidget   *widget,
2425                                   GdkEventAny *event,
2426                                   EvView      *view)
2427 {
2428         ev_view_goto_window_hide (view);
2429
2430         return TRUE;
2431 }
2432
2433 static gboolean
2434 key_is_numeric (guint keyval)
2435 {
2436         return ((keyval >= GDK_0 && keyval <= GDK_9) ||
2437                 (keyval >= GDK_KP_0 && keyval <= GDK_KP_9));
2438 }
2439
2440 static gboolean
2441 ev_view_goto_window_key_press_event (GtkWidget   *widget,
2442                                      GdkEventKey *event,
2443                                      EvView      *view)
2444 {
2445         switch (event->keyval) {
2446                 case GDK_Escape:
2447                 case GDK_Tab:
2448                 case GDK_KP_Tab:
2449                 case GDK_ISO_Left_Tab:
2450                         ev_view_goto_window_hide (view);
2451                         return TRUE;
2452                 case GDK_Return:
2453                 case GDK_KP_Enter:
2454                 case GDK_ISO_Enter:
2455                 case GDK_BackSpace:
2456                 case GDK_Delete:
2457                         return FALSE;
2458                 default:
2459                         if (!key_is_numeric (event->keyval))
2460                                 return TRUE;
2461         }
2462
2463         return FALSE;
2464 }
2465
2466 static gboolean
2467 ev_view_goto_window_button_press_event (GtkWidget      *widget,
2468                                         GdkEventButton *event,
2469                                         EvView         *view)
2470 {
2471         ev_view_goto_window_hide (view);
2472
2473         return TRUE;
2474 }
2475
2476 static void
2477 ev_view_goto_entry_activate (GtkEntry *entry,
2478                              EvView   *view)
2479 {
2480         const gchar *text;
2481         gint         page;
2482
2483         text = gtk_entry_get_text (entry);
2484         page = atoi (text) - 1;
2485
2486         ev_view_goto_window_hide (view);
2487
2488         if (page >= 0 &&
2489             page < ev_page_cache_get_n_pages (view->page_cache))
2490                 ev_page_cache_set_current_page (view->page_cache, page);
2491 }
2492
2493 static void
2494 ev_view_goto_window_create (EvView *view)
2495 {
2496         GtkWidget *frame, *hbox, *toplevel, *label;
2497
2498         toplevel = gtk_widget_get_toplevel (GTK_WIDGET (view));
2499
2500         if (view->goto_window) {
2501                 if (GTK_WINDOW (toplevel)->group)
2502                         gtk_window_group_add_window (GTK_WINDOW (toplevel)->group,
2503                                                      GTK_WINDOW (view->goto_window));
2504                 else if (GTK_WINDOW (view->goto_window)->group)
2505                         gtk_window_group_remove_window (GTK_WINDOW (view->goto_window)->group,
2506                                                         GTK_WINDOW (view->goto_window));
2507                 return;
2508         }
2509
2510         view->goto_window = gtk_window_new (GTK_WINDOW_POPUP);
2511
2512         if (GTK_WINDOW (toplevel)->group)
2513                 gtk_window_group_add_window (GTK_WINDOW (toplevel)->group,
2514                                              GTK_WINDOW (view->goto_window));
2515
2516         gtk_window_set_modal (GTK_WINDOW (view->goto_window), TRUE);
2517
2518         g_signal_connect (view->goto_window, "delete_event",
2519                           G_CALLBACK (ev_view_goto_window_delete_event),
2520                           view);
2521         g_signal_connect (view->goto_window, "key_press_event",
2522                           G_CALLBACK (ev_view_goto_window_key_press_event),
2523                           view);
2524         g_signal_connect (view->goto_window, "button_press_event",
2525                           G_CALLBACK (ev_view_goto_window_button_press_event),
2526                           view);
2527
2528         frame = gtk_frame_new (NULL);
2529         gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_ETCHED_IN);
2530         gtk_container_add (GTK_CONTAINER (view->goto_window), frame);
2531         gtk_widget_show (frame);
2532
2533         hbox = gtk_hbox_new (FALSE, 0);
2534         gtk_container_set_border_width (GTK_CONTAINER (hbox), 3);
2535         gtk_container_add (GTK_CONTAINER (frame), hbox);
2536         gtk_widget_show (hbox);
2537
2538         label = gtk_label_new(_("Jump to page:"));
2539         gtk_box_pack_start (GTK_BOX (hbox), label, TRUE, TRUE, 3);
2540         gtk_widget_show (label);
2541         gtk_widget_realize (label);
2542
2543         view->goto_entry = gtk_entry_new ();
2544         g_signal_connect (view->goto_entry, "activate",
2545                           G_CALLBACK (ev_view_goto_entry_activate),
2546                           view);
2547         gtk_box_pack_start_defaults (GTK_BOX (hbox), view->goto_entry);
2548         gtk_widget_show (view->goto_entry);
2549         gtk_widget_realize (view->goto_entry);
2550 }
2551
2552 static void
2553 ev_view_goto_entry_grab_focus (EvView *view)
2554 {
2555         GtkWidgetClass *entry_parent_class;
2556
2557         entry_parent_class = g_type_class_peek_parent (GTK_ENTRY_GET_CLASS (view->goto_entry));
2558         (entry_parent_class->grab_focus) (view->goto_entry);
2559
2560         send_focus_change (view->goto_entry, TRUE);
2561 }
2562
2563 static void
2564 ev_view_goto_window_send_key_event (EvView   *view,
2565                                     GdkEvent *event)
2566 {
2567         GdkEventKey *new_event;
2568         GdkScreen   *screen;
2569
2570         /* Move goto window off screen */
2571         screen = gtk_widget_get_screen (GTK_WIDGET (view));
2572         gtk_window_move (GTK_WINDOW (view->goto_window),
2573                          gdk_screen_get_width (screen) + 1,
2574                          gdk_screen_get_height (screen) + 1);
2575         gtk_widget_show (view->goto_window);
2576
2577         new_event = (GdkEventKey *) gdk_event_copy (event);
2578         g_object_unref (new_event->window);
2579         new_event->window = g_object_ref (view->goto_window->window);
2580         gtk_widget_realize (view->goto_window);
2581
2582         gtk_widget_event (view->goto_window, (GdkEvent *)new_event);
2583         gdk_event_free ((GdkEvent *)new_event);
2584         gtk_widget_hide (view->goto_window);
2585 }
2586
2587 static gboolean
2588 ev_view_key_press_event (GtkWidget   *widget,
2589                          GdkEventKey *event)
2590 {
2591         EvView *view = EV_VIEW (widget);
2592         EvPresentationState current;
2593
2594         if (!view->document)
2595                 return FALSE;
2596
2597         if (!view->presentation ||
2598             view->presentation_state == EV_PRESENTATION_END)
2599                 return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
2600
2601
2602         current = view->presentation_state;
2603
2604         switch (event->keyval) {
2605                 case GDK_b:
2606                 case GDK_B:
2607                         view->presentation_state =
2608                                 (view->presentation_state == EV_PRESENTATION_BLACK) ?
2609                                 EV_PRESENTATION_NORMAL : EV_PRESENTATION_BLACK;
2610                         break;
2611                 case GDK_w:
2612                 case GDK_W:
2613                         view->presentation_state =
2614                                 (view->presentation_state == EV_PRESENTATION_WHITE) ?
2615                                 EV_PRESENTATION_NORMAL : EV_PRESENTATION_WHITE;
2616                         break;
2617                 default:
2618                         if (view->presentation_state == EV_PRESENTATION_BLACK ||
2619                             view->presentation_state == EV_PRESENTATION_WHITE) {
2620                                 view->presentation_state = EV_PRESENTATION_NORMAL;
2621                         }
2622         }
2623
2624         if (current == view->presentation_state) {
2625                 if (ev_page_cache_get_n_pages (view->page_cache) > 1 &&
2626                     key_is_numeric (event->keyval)) {
2627                         gint x, y;
2628
2629                         ev_view_goto_window_create (view);
2630                         ev_view_goto_window_send_key_event (view, (GdkEvent *)event);
2631                         gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
2632                         gtk_window_move (GTK_WINDOW (view->goto_window), x, y);
2633                         gtk_widget_show (view->goto_window);
2634                         ev_view_goto_entry_grab_focus (view);
2635
2636                         return TRUE;
2637                 }
2638
2639                 return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
2640         }
2641
2642         switch (view->presentation_state) {
2643                 case EV_PRESENTATION_NORMAL:
2644                 case EV_PRESENTATION_BLACK:
2645                         gdk_window_set_background (widget->window,
2646                                                    &widget->style->black);
2647                         break;
2648                 case EV_PRESENTATION_WHITE:
2649                         gdk_window_set_background (widget->window,
2650                                                    &widget->style->white);
2651                         break;
2652                 default:
2653                         return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
2654         }
2655
2656         gtk_widget_queue_draw (widget);
2657         return TRUE;
2658 }
2659
2660 static gint
2661 ev_view_focus_in (GtkWidget     *widget,
2662                   GdkEventFocus *event)
2663 {
2664         if (EV_VIEW (widget)->pixbuf_cache)
2665                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
2666         gtk_widget_queue_draw (widget);
2667
2668         return FALSE;
2669 }
2670
2671 static gint
2672 ev_view_focus_out (GtkWidget     *widget,
2673                      GdkEventFocus *event)
2674 {
2675         if (EV_VIEW (widget)->goto_window)
2676                 ev_view_goto_window_hide (EV_VIEW (widget));
2677
2678         if (EV_VIEW (widget)->pixbuf_cache)
2679                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
2680         gtk_widget_queue_draw (widget);
2681
2682         return FALSE;
2683 }
2684
2685 static gboolean
2686 ev_view_leave_notify_event (GtkWidget *widget, GdkEventCrossing   *event)
2687 {
2688         EvView *view = EV_VIEW (widget);
2689
2690         ev_view_set_status (view, NULL);
2691
2692         if (view->cursor == EV_VIEW_CURSOR_LINK ||
2693             view->cursor == EV_VIEW_CURSOR_IBEAM)
2694                 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
2695
2696         if (view->link_tooltip) {
2697                 view->hovered_link = NULL;
2698                 ev_tooltip_deactivate (EV_TOOLTIP (view->link_tooltip));
2699         }
2700
2701         return FALSE;
2702 }
2703
2704 static gboolean
2705 ev_view_enter_notify_event (GtkWidget *widget, GdkEventCrossing   *event)
2706 {
2707         EvView *view = EV_VIEW (widget);
2708
2709         handle_link_over_xy (view, event->x, event->y);
2710
2711         return FALSE;
2712 }
2713
2714 static void
2715 ev_view_style_set (GtkWidget *widget,
2716                    GtkStyle  *old_style)
2717 {
2718         if (EV_VIEW (widget)->pixbuf_cache)
2719                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
2720
2721         GTK_WIDGET_CLASS (ev_view_parent_class)->style_set (widget, old_style);
2722 }
2723
2724 /*** Drawing ***/
2725
2726 static guint32
2727 ev_gdk_color_to_rgb (const GdkColor *color)
2728 {
2729   guint32 result;
2730   result = (0xff0000 | (color->red & 0xff00));
2731   result <<= 8;
2732   result |= ((color->green & 0xff00) | (color->blue >> 8));
2733   return result;
2734 }
2735
2736 static void
2737 draw_rubberband (GtkWidget *widget, GdkWindow *window,
2738                  const GdkRectangle *rect, guchar alpha)
2739 {
2740         GdkGC *gc;
2741         GdkPixbuf *pixbuf;
2742         GdkColor *fill_color_gdk;
2743         guint fill_color;
2744
2745         fill_color_gdk = gdk_color_copy (&GTK_WIDGET (widget)->style->base[GTK_STATE_SELECTED]);
2746         fill_color = ev_gdk_color_to_rgb (fill_color_gdk) << 8 | alpha;
2747
2748         pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE, 8,
2749                                  rect->width, rect->height);
2750         gdk_pixbuf_fill (pixbuf, fill_color);
2751
2752         gdk_draw_pixbuf (window, NULL, pixbuf,
2753                          0, 0,
2754                          rect->x - EV_VIEW (widget)->scroll_x, rect->y - EV_VIEW (widget)->scroll_y,
2755                          rect->width, rect->height,
2756                          GDK_RGB_DITHER_NONE,
2757                          0, 0);
2758
2759         g_object_unref (pixbuf);
2760
2761         gc = gdk_gc_new (window);
2762         gdk_gc_set_rgb_fg_color (gc, fill_color_gdk);
2763         gdk_draw_rectangle (window, gc, FALSE,
2764                             rect->x - EV_VIEW (widget)->scroll_x, rect->y - EV_VIEW (widget)->scroll_y,
2765                             rect->width - 1,
2766                             rect->height - 1);
2767         g_object_unref (gc);
2768
2769         gdk_color_free (fill_color_gdk);
2770 }
2771
2772
2773 static void
2774 highlight_find_results (EvView *view, int page)
2775 {
2776         EvDocumentFind *find;
2777         int i, results = 0;
2778
2779         find = EV_DOCUMENT_FIND (view->document);
2780
2781         results = ev_document_find_get_n_results (find, page);
2782
2783         for (i = 0; i < results; i++) {
2784                 EvRectangle rectangle;
2785                 GdkRectangle view_rectangle;
2786                 guchar alpha;
2787
2788                 if (i == view->find_result && page == view->current_page) {
2789                         alpha = 0x90;
2790                 } else {
2791                         alpha = 0x20;
2792                 }
2793
2794                 ev_document_find_get_result (find, page, i, &rectangle);
2795                 doc_rect_to_view_rect (view, page, &rectangle, &view_rectangle);
2796                 draw_rubberband (GTK_WIDGET (view), GTK_WIDGET(view)->window,
2797                                  &view_rectangle, alpha);
2798         }
2799 }
2800
2801 static void
2802 draw_loading_text (EvView       *view,
2803                    GdkRectangle *page_area,
2804                    GdkRectangle *expose_area)
2805 {
2806         cairo_t *cr;
2807         gint     width, height;
2808
2809         /* Don't annoy users with loading messages during presentations.
2810          * FIXME: Temporary "workaround" for
2811          * http://bugzilla.gnome.org/show_bug.cgi?id=320352 */
2812         if (view->presentation)
2813                 return;
2814
2815         if (!view->loading_text) {
2816                 const gchar *loading_text = _("Loading...");
2817                 PangoLayout *layout;
2818                 PangoFontDescription *font_desc;
2819                 PangoRectangle logical_rect;
2820                 gint target_width;
2821                 gdouble real_scale;
2822
2823                 ev_document_fc_mutex_lock ();
2824
2825                 layout = gtk_widget_create_pango_layout (GTK_WIDGET (view), loading_text);
2826
2827                 font_desc = pango_font_description_new ();
2828
2829                 /* We set the font to be 10 points, get the size, and scale appropriately */
2830                 pango_font_description_set_size (font_desc, 10 * PANGO_SCALE);
2831                 pango_layout_set_font_description (layout, font_desc);
2832                 pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
2833
2834                 target_width = MAX (page_area->width / 2, 1);
2835                 real_scale = ((double)target_width / (double) logical_rect.width) * (PANGO_SCALE * 10);
2836                 pango_font_description_set_size (font_desc, (int)real_scale);
2837                 pango_layout_set_font_description (layout, font_desc);
2838                 pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
2839
2840                 view->loading_text = cairo_image_surface_create (CAIRO_FORMAT_ARGB32,
2841                                                                  logical_rect.width,
2842                                                                  logical_rect.height);
2843                 cr = cairo_create (view->loading_text);
2844                 cairo_set_source_rgb (cr,
2845                                       155 / (double)255,
2846                                       155 / (double)255,
2847                                       155 / (double)255);
2848                 pango_cairo_show_layout (cr, layout);
2849                 cairo_destroy (cr);
2850
2851                 pango_font_description_free (font_desc);
2852                 g_object_unref (layout);
2853
2854                 ev_document_fc_mutex_unlock ();
2855         }
2856
2857         width = (page_area->width - cairo_image_surface_get_width (view->loading_text)) / 2;
2858         height = (page_area->height - cairo_image_surface_get_height (view->loading_text)) / 2;
2859
2860         cr = gdk_cairo_create (GTK_WIDGET (view)->window);
2861         cairo_translate (cr,
2862                          page_area->x + width,
2863                          page_area->y + height);
2864         cairo_set_source_surface (cr, view->loading_text, 0, 0);
2865         cairo_paint (cr);
2866         cairo_destroy (cr);
2867 }
2868
2869 static void
2870 draw_one_page (EvView       *view,
2871                gint          page,
2872                GdkRectangle *page_area,
2873                GtkBorder    *border,
2874                GdkRectangle *expose_area,
2875                gboolean     *page_ready)
2876 {
2877         GdkRectangle overlap;
2878         GdkRectangle real_page_area;
2879
2880         g_assert (view->document);
2881
2882         if (! gdk_rectangle_intersect (page_area, expose_area, &overlap))
2883                 return;
2884
2885         /* Render the document itself */
2886         real_page_area = *page_area;
2887
2888         real_page_area.x += border->left;
2889         real_page_area.y += border->top;
2890         real_page_area.width -= (border->left + border->right);
2891         real_page_area.height -= (border->top + border->bottom);
2892         *page_ready = TRUE;
2893
2894         if (!view->presentation) {
2895                 gint current_page;
2896
2897                 current_page = ev_page_cache_get_current_page (view->page_cache);
2898                 ev_document_misc_paint_one_page (GTK_WIDGET (view)->window,
2899                                                  GTK_WIDGET (view),
2900                                                  page_area, border,
2901                                                  page == current_page);
2902         }
2903
2904         if (gdk_rectangle_intersect (&real_page_area, expose_area, &overlap)) {
2905                 gint             width, height;
2906                 gint             page_width, page_height;
2907                 cairo_surface_t *page_surface = NULL;
2908                 gint             selection_width, selection_height;
2909                 cairo_surface_t *selection_surface = NULL;
2910                 cairo_t         *cr = NULL;
2911
2912                 page_surface = ev_pixbuf_cache_get_surface (view->pixbuf_cache, page);
2913
2914                 if (!page_surface) {
2915                         draw_loading_text (view,
2916                                            &real_page_area,
2917                                            expose_area);
2918                         *page_ready = FALSE;
2919
2920                         return;
2921                 }
2922
2923                 ev_page_cache_get_size (view->page_cache,
2924                                         page, view->rotation,
2925                                         view->scale,
2926                                         &width, &height);
2927
2928                 cr = gdk_cairo_create (GTK_WIDGET (view)->window);
2929
2930                 cairo_save (cr);
2931
2932                 page_width = cairo_image_surface_get_width (page_surface);
2933                 page_height = cairo_image_surface_get_height (page_surface);
2934
2935                 cairo_translate (cr, overlap.x, overlap.y);
2936
2937                 if (width != page_width || height != page_height) {
2938                         cairo_pattern_set_filter (cairo_get_source (cr),
2939                                                   CAIRO_FILTER_FAST);
2940                         cairo_scale (cr,
2941                                      (gdouble)width / page_width,
2942                                      (gdouble)height / page_height);
2943                 }
2944
2945                 cairo_surface_set_device_offset (page_surface,
2946                                                  overlap.x - real_page_area.x,
2947                                                  overlap.y - real_page_area.y);
2948
2949                 cairo_set_source_surface (cr, page_surface, 0, 0);
2950                 cairo_paint (cr);
2951
2952                 cairo_restore (cr);
2953
2954                 /* Get the selection pixbuf iff we have something to draw */
2955                 if (find_selection_for_page (view, page) &&
2956                     view->selection_mode == EV_VIEW_SELECTION_TEXT) {
2957                         selection_surface =
2958                                 ev_pixbuf_cache_get_selection_surface (view->pixbuf_cache,
2959                                                                        page,
2960                                                                        view->scale,
2961                                                                        NULL);
2962                 }
2963
2964                 if (!selection_surface) {
2965                         cairo_destroy (cr);
2966                         return;
2967                 }
2968
2969                 selection_width = cairo_image_surface_get_width (selection_surface);
2970                 selection_height = cairo_image_surface_get_height (selection_surface);
2971
2972                 cairo_translate (cr, overlap.x, overlap.y);
2973
2974                 if (width != selection_width || height != selection_height) {
2975                         cairo_pattern_set_filter (cairo_get_source (cr),
2976                                                   CAIRO_FILTER_FAST);
2977                         cairo_scale (cr,
2978                                      (gdouble)width / selection_width,
2979                                      (gdouble)height / selection_height);
2980                 }
2981
2982                 cairo_surface_set_device_offset (selection_surface,
2983                                                  overlap.x - real_page_area.x,
2984                                                  overlap.y - real_page_area.y);
2985
2986                 cairo_set_source_surface (cr, selection_surface, 0, 0);
2987                 cairo_paint (cr);
2988                 cairo_destroy (cr);
2989         }
2990 }
2991
2992 /*** GObject functions ***/
2993
2994 static void
2995 ev_view_finalize (GObject *object)
2996 {
2997         EvView *view = EV_VIEW (object);
2998
2999         g_free (view->status);
3000         g_free (view->find_status);
3001
3002         clear_selection (view);
3003
3004         if (view->image_dnd_info.image)
3005                 g_object_unref (view->image_dnd_info.image);
3006         view->image_dnd_info.image = NULL;
3007
3008         G_OBJECT_CLASS (ev_view_parent_class)->finalize (object);
3009 }
3010
3011 static void
3012 ev_view_destroy (GtkObject *object)
3013 {
3014         EvView *view = EV_VIEW (object);
3015
3016         if (view->document) {
3017                 g_object_unref (view->document);
3018                 view->document = NULL;
3019         }
3020
3021         if (view->pixbuf_cache) {
3022                 g_object_unref (view->pixbuf_cache);
3023                 view->pixbuf_cache = NULL;
3024         }
3025
3026         if (view->link_tooltip) {
3027                 gtk_widget_destroy (view->link_tooltip);
3028                 view->link_tooltip = NULL;
3029         }
3030
3031         if (view->goto_window) {
3032                 gtk_widget_destroy (view->goto_window);
3033                 view->goto_window = NULL;
3034                 view->goto_entry = NULL;
3035         }
3036
3037         if (view->selection_scroll_id) {
3038             g_source_remove (view->selection_scroll_id);
3039             view->selection_scroll_id = 0;
3040         }
3041
3042         if (view->selection_update_id) {
3043             g_source_remove (view->selection_update_id);
3044             view->selection_update_id = 0;
3045         }
3046
3047         if (view->loading_text) {
3048                 cairo_surface_destroy (view->loading_text);
3049                 view->loading_text = NULL;
3050         }
3051
3052         ev_view_presentation_transition_stop (view);
3053
3054         ev_view_set_scroll_adjustments (view, NULL, NULL);
3055
3056         GTK_OBJECT_CLASS (ev_view_parent_class)->destroy (object);
3057 }
3058
3059 static void
3060 ev_view_set_property (GObject      *object,
3061                       guint         prop_id,
3062                       const GValue *value,
3063                       GParamSpec   *pspec)
3064 {
3065         EvView *view = EV_VIEW (object);
3066
3067         switch (prop_id) {
3068                 case PROP_CONTINUOUS:
3069                         ev_view_set_continuous (view, g_value_get_boolean (value));
3070                         break;
3071                 case PROP_DUAL_PAGE:
3072                         ev_view_set_dual_page (view, g_value_get_boolean (value));
3073                         break;
3074                 case PROP_FULLSCREEN:
3075                         ev_view_set_fullscreen (view, g_value_get_boolean (value));
3076                         break;
3077                 case PROP_PRESENTATION:
3078                         ev_view_set_presentation (view, g_value_get_boolean (value));
3079                         break;
3080                 case PROP_SIZING_MODE:
3081                         ev_view_set_sizing_mode (view, g_value_get_enum (value));
3082                         break;
3083                 case PROP_ZOOM:
3084                         ev_view_set_zoom (view, g_value_get_double (value), FALSE);
3085                         break;
3086                 case PROP_ROTATION:
3087                         ev_view_set_rotation (view, g_value_get_int (value));
3088                         break;
3089                 default:
3090                         G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
3091         }
3092 }
3093
3094 static AtkObject *
3095 ev_view_get_accessible (GtkWidget *widget)
3096 {
3097         static gboolean first_time = TRUE;
3098
3099         if (first_time) {
3100                 AtkObjectFactory *factory;
3101                 AtkRegistry *registry;
3102                 GType derived_type;
3103                 GType derived_atk_type;
3104
3105                 /*
3106                  * Figure out whether accessibility is enabled by looking at the
3107                  * type of the accessible object which would be created for
3108                  * the parent type of EvView.
3109                  */
3110                 derived_type = g_type_parent (EV_TYPE_VIEW);
3111
3112                 registry = atk_get_default_registry ();
3113                 factory = atk_registry_get_factory (registry,
3114                                                     derived_type);
3115                 derived_atk_type = atk_object_factory_get_accessible_type (factory);
3116                 if (g_type_is_a (derived_atk_type, GTK_TYPE_ACCESSIBLE))
3117                         atk_registry_set_factory_type (registry,
3118                                                        EV_TYPE_VIEW,
3119                                                        ev_view_accessible_factory_get_type ());
3120                 first_time = FALSE;
3121         }
3122         return GTK_WIDGET_CLASS (ev_view_parent_class)->get_accessible (widget);
3123 }
3124
3125 static void
3126 ev_view_get_property (GObject *object,
3127                       guint prop_id,
3128                       GValue *value,
3129                       GParamSpec *pspec)
3130 {
3131         EvView *view = EV_VIEW (object);
3132
3133         switch (prop_id) {
3134                 case PROP_STATUS:
3135                         g_value_set_string (value, view->status);
3136                         break;
3137                 case PROP_FIND_STATUS:
3138                         g_value_set_string (value, view->status);
3139                         break;
3140                 case PROP_CONTINUOUS:
3141                         g_value_set_boolean (value, view->continuous);
3142                         break;
3143                 case PROP_DUAL_PAGE:
3144                         g_value_set_boolean (value, view->dual_page);
3145                         break;
3146                 case PROP_FULLSCREEN:
3147                         g_value_set_boolean (value, view->fullscreen);
3148                         break;
3149                 case PROP_PRESENTATION:
3150                         g_value_set_boolean (value, view->presentation);
3151                         break;
3152                 case PROP_SIZING_MODE:
3153                         g_value_set_enum (value, view->sizing_mode);
3154                         break;
3155                 case PROP_ZOOM:
3156                         g_value_set_double (value, view->scale);
3157                         break;
3158                 case PROP_ROTATION:
3159                         g_value_set_int (value, view->rotation);
3160                         break;
3161                 case PROP_HAS_SELECTION:
3162                         g_value_set_boolean (value,
3163                                              view->selection_info.selections != NULL);
3164                         break;
3165                 default:
3166                         G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
3167         }
3168 }
3169
3170 static void
3171 ev_view_class_init (EvViewClass *class)
3172 {
3173         GObjectClass *object_class = G_OBJECT_CLASS (class);
3174         GtkObjectClass *gtk_object_class = GTK_OBJECT_CLASS (class);
3175         GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
3176         GtkBindingSet *binding_set;
3177
3178         object_class->finalize = ev_view_finalize;
3179         object_class->set_property = ev_view_set_property;
3180         object_class->get_property = ev_view_get_property;
3181
3182         widget_class->expose_event = ev_view_expose_event;
3183         widget_class->button_press_event = ev_view_button_press_event;
3184         widget_class->motion_notify_event = ev_view_motion_notify_event;
3185         widget_class->button_release_event = ev_view_button_release_event;
3186         widget_class->key_press_event = ev_view_key_press_event;
3187         widget_class->focus_in_event = ev_view_focus_in;
3188         widget_class->focus_out_event = ev_view_focus_out;
3189         widget_class->get_accessible = ev_view_get_accessible;
3190         widget_class->size_request = ev_view_size_request;
3191         widget_class->size_allocate = ev_view_size_allocate;
3192         widget_class->realize = ev_view_realize;
3193         widget_class->scroll_event = ev_view_scroll_event;
3194         widget_class->enter_notify_event = ev_view_enter_notify_event;
3195         widget_class->leave_notify_event = ev_view_leave_notify_event;
3196         widget_class->style_set = ev_view_style_set;
3197         widget_class->drag_data_get = ev_view_drag_data_get;
3198         widget_class->drag_motion = ev_view_drag_motion;
3199         widget_class->drag_data_received = ev_view_drag_data_received;
3200         widget_class->popup_menu = ev_view_popup_menu;
3201         gtk_object_class->destroy = ev_view_destroy;
3202
3203         class->set_scroll_adjustments = ev_view_set_scroll_adjustments;
3204         class->binding_activated = ev_view_scroll;
3205
3206         widget_class->set_scroll_adjustments_signal =
3207             g_signal_new ("set-scroll-adjustments",
3208                           G_OBJECT_CLASS_TYPE (object_class),
3209                           G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
3210                           G_STRUCT_OFFSET (EvViewClass, set_scroll_adjustments),
3211                           NULL, NULL,
3212                           ev_marshal_VOID__OBJECT_OBJECT,
3213                           G_TYPE_NONE, 2,
3214                           GTK_TYPE_ADJUSTMENT,
3215                           GTK_TYPE_ADJUSTMENT);
3216
3217         signals[SIGNAL_BINDING_ACTIVATED] = g_signal_new ("binding_activated",
3218                          G_TYPE_FROM_CLASS (object_class),
3219                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
3220                          G_STRUCT_OFFSET (EvViewClass, binding_activated),
3221                          NULL, NULL,
3222                          ev_marshal_VOID__ENUM_BOOLEAN,
3223                          G_TYPE_NONE, 2,
3224                          GTK_TYPE_SCROLL_TYPE,
3225                          G_TYPE_BOOLEAN);
3226
3227         signals[SIGNAL_ZOOM_INVALID] = g_signal_new ("zoom-invalid",
3228                          G_TYPE_FROM_CLASS (object_class),
3229                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
3230                          G_STRUCT_OFFSET (EvViewClass, zoom_invalid),
3231                          NULL, NULL,
3232                          ev_marshal_VOID__VOID,
3233                          G_TYPE_NONE, 0, G_TYPE_NONE);
3234         signals[SIGNAL_HANDLE_LINK] = g_signal_new ("handle-link",
3235                          G_TYPE_FROM_CLASS (object_class),
3236                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
3237                          G_STRUCT_OFFSET (EvViewClass, handle_link),
3238                          NULL, NULL,
3239                          g_cclosure_marshal_VOID__OBJECT,
3240                          G_TYPE_NONE, 1,
3241                          G_TYPE_OBJECT);
3242         signals[SIGNAL_EXTERNAL_LINK] = g_signal_new ("external-link",
3243                          G_TYPE_FROM_CLASS (object_class),
3244                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
3245                          G_STRUCT_OFFSET (EvViewClass, external_link),
3246                          NULL, NULL,
3247                          g_cclosure_marshal_VOID__OBJECT,
3248                          G_TYPE_NONE, 1,
3249                          G_TYPE_OBJECT);
3250         signals[SIGNAL_POPUP_MENU] = g_signal_new ("popup",
3251                          G_TYPE_FROM_CLASS (object_class),
3252                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
3253                          G_STRUCT_OFFSET (EvViewClass, popup_menu),
3254                          NULL, NULL,
3255                          g_cclosure_marshal_VOID__OBJECT,
3256                          G_TYPE_NONE, 1,
3257                          G_TYPE_OBJECT);
3258
3259         g_object_class_install_property (object_class,
3260                                          PROP_STATUS,
3261                                          g_param_spec_string ("status",
3262                                                               "Status Message",
3263                                                               "The status message",
3264                                                               NULL,
3265                                                               G_PARAM_READABLE));
3266
3267         g_object_class_install_property (object_class,
3268                                          PROP_FIND_STATUS,
3269                                          g_param_spec_string ("find-status",
3270                                                               "Find Status Message",
3271                                                               "The find status message",
3272                                                               NULL,
3273                                                               G_PARAM_READABLE));
3274
3275         g_object_class_install_property (object_class,
3276                                          PROP_CONTINUOUS,
3277                                          g_param_spec_boolean ("continuous",
3278                                                                "Continuous",
3279                                                                "Continuous scrolling mode",
3280                                                                TRUE,
3281                                                                G_PARAM_READWRITE));
3282
3283         g_object_class_install_property (object_class,
3284                                          PROP_DUAL_PAGE,
3285                                          g_param_spec_boolean ("dual-page",
3286                                                                "Dual Page",
3287                                                                "Two pages visible at once",
3288                                                                FALSE,
3289                                                                G_PARAM_READWRITE));
3290         g_object_class_install_property (object_class,
3291                                          PROP_FULLSCREEN,
3292                                          g_param_spec_boolean ("fullscreen",
3293                                                                "Full Screen",
3294                                                                "Draw page in a fullscreen fashion",
3295                                                                FALSE,
3296                                                                G_PARAM_READWRITE));
3297         g_object_class_install_property (object_class,
3298                                          PROP_PRESENTATION,
3299                                          g_param_spec_boolean ("presentation",
3300                                                                "Presentation",
3301                                                                "Draw page in presentation mode",
3302                                                                TRUE,
3303                                                                G_PARAM_READWRITE));
3304
3305         g_object_class_install_property (object_class,
3306                                          PROP_SIZING_MODE,
3307                                          g_param_spec_enum ("sizing-mode",
3308                                                             "Sizing Mode",
3309                                                             "Sizing Mode",
3310                                                             EV_TYPE_SIZING_MODE,
3311                                                             EV_SIZING_FIT_WIDTH,
3312                                                             G_PARAM_READWRITE));
3313
3314         g_object_class_install_property (object_class,
3315                                          PROP_ZOOM,
3316                                          g_param_spec_double ("zoom",
3317                                                               "Zoom factor",
3318                                                               "Zoom factor",
3319                                                               0,
3320                                                               G_MAXDOUBLE,
3321                                                               1.0,
3322                                                               G_PARAM_READWRITE));
3323         g_object_class_install_property (object_class,
3324                                          PROP_ROTATION,
3325                                          g_param_spec_double ("rotation",
3326                                                               "Rotation",
3327                                                               "Rotation",
3328                                                               0,
3329                                                               360,
3330                                                               0,
3331                                                               G_PARAM_READWRITE));
3332         g_object_class_install_property (object_class,
3333                                          PROP_HAS_SELECTION,
3334                                          g_param_spec_boolean ("has-selection",
3335                                                                "Has selection",
3336                                                                "The view has selections",
3337                                                                FALSE,
3338                                                                G_PARAM_READABLE));
3339
3340         binding_set = gtk_binding_set_by_class (class);
3341
3342         add_scroll_binding_keypad (binding_set, GDK_Left,  0, EV_SCROLL_STEP_BACKWARD, TRUE);
3343         add_scroll_binding_keypad (binding_set, GDK_Right, 0, EV_SCROLL_STEP_FORWARD,  TRUE);
3344         add_scroll_binding_keypad (binding_set, GDK_Left,  GDK_MOD1_MASK, EV_SCROLL_STEP_DOWN, TRUE);
3345         add_scroll_binding_keypad (binding_set, GDK_Right, GDK_MOD1_MASK, EV_SCROLL_STEP_UP,  TRUE);
3346         add_scroll_binding_keypad (binding_set, GDK_Up,    0, EV_SCROLL_STEP_BACKWARD, FALSE);
3347         add_scroll_binding_keypad (binding_set, GDK_Down,  0, EV_SCROLL_STEP_FORWARD,  FALSE);
3348         add_scroll_binding_keypad (binding_set, GDK_Up,    GDK_MOD1_MASK, EV_SCROLL_STEP_DOWN, FALSE);
3349         add_scroll_binding_keypad (binding_set, GDK_Down,  GDK_MOD1_MASK, EV_SCROLL_STEP_UP,  FALSE);
3350 }
3351
3352 static void
3353 ev_view_init (EvView *view)
3354 {
3355         GTK_WIDGET_SET_FLAGS (view, GTK_CAN_FOCUS);
3356
3357         view->spacing = 5;
3358         view->scale = 1.0;
3359         view->current_page = 0;
3360         view->pressed_button = -1;
3361         view->cursor = EV_VIEW_CURSOR_NORMAL;
3362         view->drag_info.in_drag = FALSE;
3363         view->selection_info.selections = NULL;
3364         view->selection_info.in_selection = FALSE;
3365         view->selection_info.in_drag = FALSE;
3366         view->selection_mode = EV_VIEW_SELECTION_TEXT;
3367         view->continuous = TRUE;
3368         view->dual_page = FALSE;
3369         view->presentation = FALSE;
3370         view->presentation_state = EV_PRESENTATION_NORMAL;
3371         view->fullscreen = FALSE;
3372         view->sizing_mode = EV_SIZING_FIT_WIDTH;
3373         view->pending_scroll = SCROLL_TO_KEEP_POSITION;
3374         view->jump_to_find_result = TRUE;
3375
3376         gtk_drag_dest_set (GTK_WIDGET (view),
3377                            GTK_DEST_DEFAULT_ALL,
3378                            view_drop_targets,
3379                            G_N_ELEMENTS (view_drop_targets),
3380                            GDK_ACTION_COPY);
3381 }
3382
3383 /*** Callbacks ***/
3384
3385 static void
3386 find_changed_cb (EvDocument *document, int page, EvView *view)
3387 {
3388         double percent;
3389         int n_pages;
3390
3391         percent = ev_document_find_get_progress
3392                         (EV_DOCUMENT_FIND (view->document));
3393         n_pages = ev_page_cache_get_n_pages (view->page_cache);
3394
3395         if (view->jump_to_find_result == TRUE) {
3396                 jump_to_find_page (view, EV_VIEW_FIND_NEXT, 0);
3397                 jump_to_find_result (view);
3398         }
3399         update_find_status_message (view, percent * n_pages >= n_pages - 1 );
3400         if (view->current_page == page)
3401                 gtk_widget_queue_draw (GTK_WIDGET (view));
3402 }
3403
3404 static void
3405 job_finished_cb (EvPixbufCache *pixbuf_cache,
3406                  EvView        *view)
3407 {
3408         gtk_widget_queue_draw (GTK_WIDGET (view));
3409 }
3410
3411 static void
3412 page_changed_cb (EvPageCache *page_cache,
3413                  int          new_page,
3414                  EvView      *view)
3415 {
3416         if (view->current_page != new_page) {
3417                 gint x, y;
3418
3419                 view->current_page = new_page;
3420                 view->pending_scroll = SCROLL_TO_PAGE_POSITION;
3421
3422                 if (view->presentation)
3423                         ev_view_presentation_transition_start (view);
3424
3425                 gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
3426                 handle_link_over_xy (view, x, y);
3427
3428                 gtk_widget_queue_resize (GTK_WIDGET (view));
3429         } else {
3430                 gtk_widget_queue_draw (GTK_WIDGET (view));
3431         }
3432
3433         if (EV_IS_DOCUMENT_FIND (view->document)) {
3434                 view->find_result = 0;
3435                 update_find_status_message (view, TRUE);
3436         }
3437 }
3438
3439 static void
3440 on_adjustment_value_changed (GtkAdjustment *adjustment,
3441                              EvView        *view)
3442 {
3443         int dx = 0, dy = 0;
3444         gint x, y;
3445
3446         if (! GTK_WIDGET_REALIZED (view))
3447                 return;
3448
3449         if (view->hadjustment) {
3450                 dx = view->scroll_x - (int) view->hadjustment->value;
3451                 view->scroll_x = (int) view->hadjustment->value;
3452         } else {
3453                 view->scroll_x = 0;
3454         }
3455
3456         if (view->vadjustment) {
3457                 dy = view->scroll_y - (int) view->vadjustment->value;
3458                 view->scroll_y = (int) view->vadjustment->value;
3459         } else {
3460                 view->scroll_y = 0;
3461         }
3462
3463         if (view->pending_resize)
3464                 gtk_widget_queue_draw (GTK_WIDGET (view));
3465         else
3466                 gdk_window_scroll (GTK_WIDGET (view)->window, dx, dy);
3467
3468         gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
3469         handle_link_over_xy (view, x, y);
3470
3471         if (view->document)
3472                 view_update_range_and_current_page (view);
3473 }
3474
3475 GtkWidget*
3476 ev_view_new (void)
3477 {
3478         GtkWidget *view;
3479
3480         view = g_object_new (EV_TYPE_VIEW, NULL);
3481
3482         return view;
3483 }
3484
3485 static void
3486 setup_caches (EvView *view)
3487 {
3488         view->page_cache = ev_page_cache_get (view->document);
3489         g_signal_connect (view->page_cache, "page-changed", G_CALLBACK (page_changed_cb), view);
3490         view->pixbuf_cache = ev_pixbuf_cache_new (GTK_WIDGET (view), view->document);
3491         g_signal_connect (view->pixbuf_cache, "job-finished", G_CALLBACK (job_finished_cb), view);
3492         page_changed_cb (view->page_cache,
3493                          ev_page_cache_get_current_page (view->page_cache),
3494                          view);
3495 }
3496
3497 static void
3498 clear_caches (EvView *view)
3499 {
3500         if (view->pixbuf_cache) {
3501                 g_object_unref (view->pixbuf_cache);
3502                 view->pixbuf_cache = NULL;
3503         }
3504
3505         if (view->page_cache) {
3506                 view->page_cache = NULL;
3507         }
3508 }
3509
3510 void
3511 ev_view_set_loading (EvView       *view,
3512                      gboolean      loading)
3513 {
3514         view->loading = loading;
3515         gtk_widget_queue_draw (GTK_WIDGET (view));
3516 }
3517
3518 void
3519 ev_view_set_document (EvView     *view,
3520                       EvDocument *document)
3521 {
3522         g_return_if_fail (EV_IS_VIEW (view));
3523
3524         view->loading = FALSE;
3525
3526         if (document != view->document) {
3527                 clear_caches (view);
3528
3529                 if (view->document) {
3530                         g_signal_handlers_disconnect_by_func (view->document,
3531                                                               find_changed_cb,
3532                                                               view);
3533                         g_object_unref (view->document);
3534                         view->page_cache = NULL;
3535
3536                 }
3537
3538                 view->document = document;
3539                 view->find_result = 0;
3540
3541                 if (view->document) {
3542                         g_object_ref (view->document);
3543                         if (EV_IS_DOCUMENT_FIND (view->document)) {
3544                                 g_signal_connect (view->document,
3545                                                   "find_changed",
3546                                                   G_CALLBACK (find_changed_cb),
3547                                                   view);
3548                         }
3549
3550                         setup_caches (view);
3551                 }
3552
3553                 gtk_widget_queue_resize (GTK_WIDGET (view));
3554         }
3555 }
3556
3557 /*** Zoom and sizing mode ***/
3558
3559 #define EPSILON 0.0000001
3560 void
3561 ev_view_set_zoom (EvView   *view,
3562                   double    factor,
3563                   gboolean  relative)
3564 {
3565         double scale;
3566
3567         if (relative)
3568                 scale = view->scale * factor;
3569         else
3570                 scale = factor;
3571
3572         scale = CLAMP (scale, view->min_scale, view->max_scale);
3573
3574         if (ABS (view->scale - scale) < EPSILON)
3575                 return;
3576
3577         if (view->loading_text) {
3578                 cairo_surface_destroy (view->loading_text);
3579                 view->loading_text = NULL;
3580         }
3581
3582         view->scale = scale;
3583         view->pending_resize = TRUE;
3584
3585         gtk_widget_queue_resize (GTK_WIDGET (view));
3586
3587         g_object_notify (G_OBJECT (view), "zoom");
3588 }
3589
3590 double
3591 ev_view_get_zoom (EvView *view)
3592 {
3593         return view->scale;
3594 }
3595
3596 void
3597 ev_view_set_screen_dpi (EvView  *view,
3598                         gdouble  dpi)
3599 {
3600         g_return_if_fail (EV_IS_VIEW (view));
3601         g_return_if_fail (dpi > 0);
3602
3603         view->dpi = dpi;
3604         view->min_scale = MIN_SCALE * dpi / 72.0;
3605         view->max_scale = MAX_SCALE * dpi / 72.0;
3606 }
3607
3608 gboolean
3609 ev_view_get_continuous (EvView *view)
3610 {
3611         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
3612
3613         return view->continuous;
3614 }
3615
3616 void
3617 ev_view_set_continuous (EvView   *view,
3618                         gboolean  continuous)
3619 {
3620         g_return_if_fail (EV_IS_VIEW (view));
3621
3622         continuous = continuous != FALSE;
3623
3624         if (view->continuous != continuous) {
3625                 view->continuous = continuous;
3626                 view->pending_scroll = SCROLL_TO_PAGE_POSITION;
3627                 gtk_widget_queue_resize (GTK_WIDGET (view));
3628         }
3629
3630         g_object_notify (G_OBJECT (view), "continuous");
3631 }
3632
3633 gboolean
3634 ev_view_get_dual_page (EvView *view)
3635 {
3636         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
3637
3638         return view->dual_page;
3639 }
3640
3641 void
3642 ev_view_set_dual_page (EvView   *view,
3643                        gboolean  dual_page)
3644 {
3645         g_return_if_fail (EV_IS_VIEW (view));
3646
3647         dual_page = dual_page != FALSE;
3648
3649         if (view->dual_page == dual_page)
3650                 return;
3651
3652         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
3653         view->dual_page = dual_page;
3654         /* FIXME: if we're keeping the pixbuf cache around, we should extend the
3655          * preload_cache_size to be 2 if dual_page is set.
3656          */
3657         gtk_widget_queue_resize (GTK_WIDGET (view));
3658
3659         g_object_notify (G_OBJECT (view), "dual-page");
3660 }
3661
3662 void
3663 ev_view_set_fullscreen (EvView   *view,
3664                          gboolean  fullscreen)
3665 {
3666         g_return_if_fail (EV_IS_VIEW (view));
3667
3668         fullscreen = fullscreen != FALSE;
3669
3670         if (view->fullscreen == fullscreen)
3671                 return;
3672
3673         view->fullscreen = fullscreen;
3674         gtk_widget_queue_resize (GTK_WIDGET (view));
3675
3676         g_object_notify (G_OBJECT (view), "fullscreen");
3677 }
3678
3679 gboolean
3680 ev_view_get_fullscreen (EvView *view)
3681 {
3682         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
3683
3684         return view->fullscreen;
3685 }
3686
3687 void
3688 ev_view_set_presentation (EvView   *view,
3689                           gboolean  presentation)
3690 {
3691         g_return_if_fail (EV_IS_VIEW (view));
3692
3693         presentation = presentation != FALSE;
3694
3695         if (view->presentation == presentation)
3696                 return;
3697
3698         if (!presentation)
3699                 view->presentation_state = EV_PRESENTATION_NORMAL;
3700
3701         view->presentation = presentation;
3702         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
3703
3704         if (presentation) {
3705                 view->sizing_mode_saved = view->sizing_mode;
3706                 view->scale_saved = view->scale;
3707                 ev_view_set_sizing_mode (view, EV_SIZING_BEST_FIT);
3708         } else {
3709                 ev_view_set_sizing_mode (view, view->sizing_mode_saved);
3710                 ev_view_set_zoom (view, view->scale_saved, FALSE);
3711         }
3712
3713         gtk_widget_queue_resize (GTK_WIDGET (view));
3714
3715         if (presentation)
3716                 ev_view_presentation_transition_start (view);
3717         else
3718                 ev_view_presentation_transition_stop (view);
3719
3720         if (GTK_WIDGET_REALIZED (view)) {
3721                 if (view->presentation)
3722                         gdk_window_set_background (GTK_WIDGET(view)->window,
3723                                                    &GTK_WIDGET (view)->style->black);
3724                 else
3725                         gdk_window_set_background (GTK_WIDGET(view)->window,
3726                                                    &GTK_WIDGET (view)->style->mid [GTK_STATE_NORMAL]);
3727         }
3728
3729         g_object_notify (G_OBJECT (view), "presentation");
3730 }
3731
3732 gboolean
3733 ev_view_get_presentation (EvView *view)
3734 {
3735         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
3736
3737         return view->presentation;
3738 }
3739
3740 static gboolean
3741 transition_next_page (EvView *view)
3742 {
3743         ev_view_next_page (view);
3744
3745         return FALSE;
3746 }
3747
3748 static void
3749 ev_view_presentation_transition_stop (EvView *view)
3750 {
3751         if (view->trans_timeout_id > 0)
3752                 g_source_remove (view->trans_timeout_id);
3753         view->trans_timeout_id = 0;
3754 }
3755
3756 static void
3757 ev_view_presentation_transition_start (EvView *view)
3758 {
3759         gdouble duration;
3760
3761         if (!EV_IS_DOCUMENT_TRANSITION (view->document))
3762                 return;
3763
3764         ev_view_presentation_transition_stop (view);
3765
3766         duration = ev_document_transition_get_page_duration (EV_DOCUMENT_TRANSITION (view->document),
3767                                                              view->current_page);
3768         if (duration > 0)
3769                 view->trans_timeout_id = g_timeout_add (duration * 1000,
3770                                                         (GSourceFunc) transition_next_page,
3771                                                         view);
3772 }
3773
3774 void
3775 ev_view_set_sizing_mode (EvView       *view,
3776                          EvSizingMode  sizing_mode)
3777 {
3778         g_return_if_fail (EV_IS_VIEW (view));
3779
3780         if (view->sizing_mode == sizing_mode)
3781                 return;
3782
3783         view->sizing_mode = sizing_mode;
3784         gtk_widget_queue_resize (GTK_WIDGET (view));
3785
3786         g_object_notify (G_OBJECT (view), "sizing-mode");
3787 }
3788
3789 EvSizingMode
3790 ev_view_get_sizing_mode (EvView *view)
3791 {
3792         g_return_val_if_fail (EV_IS_VIEW (view), EV_SIZING_FREE);
3793
3794         return view->sizing_mode;
3795 }
3796
3797 gboolean
3798 ev_view_can_zoom_in (EvView *view)
3799 {
3800         return view->scale * ZOOM_IN_FACTOR <= view->max_scale;
3801 }
3802
3803 gboolean
3804 ev_view_can_zoom_out (EvView *view)
3805 {
3806         return view->scale * ZOOM_OUT_FACTOR >= view->min_scale;
3807 }
3808
3809 void
3810 ev_view_zoom_in (EvView *view)
3811 {
3812         g_return_if_fail (view->sizing_mode == EV_SIZING_FREE);
3813
3814         if (view->presentation)
3815                 return;
3816
3817         view->pending_scroll = SCROLL_TO_CENTER;
3818         ev_view_set_zoom (view, ZOOM_IN_FACTOR, TRUE);
3819 }
3820
3821 void
3822 ev_view_zoom_out (EvView *view)
3823 {
3824         g_return_if_fail (view->sizing_mode == EV_SIZING_FREE);
3825
3826         if (view->presentation)
3827                 return;
3828
3829         view->pending_scroll = SCROLL_TO_CENTER;
3830         ev_view_set_zoom (view, ZOOM_OUT_FACTOR, TRUE);
3831 }
3832
3833 void
3834 ev_view_rotate_right (EvView *view)
3835 {
3836         int rotation = view->rotation + 90;
3837
3838         if (rotation >= 360) {
3839                 rotation -= 360;
3840         }
3841
3842         ev_view_set_rotation (view, rotation);
3843 }
3844
3845 void
3846 ev_view_rotate_left (EvView *view)
3847 {
3848         int rotation = view->rotation - 90;
3849
3850         if (rotation < 0) {
3851                 rotation += 360;
3852         }
3853
3854         ev_view_set_rotation (view, rotation);
3855 }
3856
3857 void
3858 ev_view_set_rotation (EvView *view, int rotation)
3859 {
3860         view->rotation = rotation;
3861
3862         if (view->pixbuf_cache) {
3863                 ev_pixbuf_cache_clear (view->pixbuf_cache);
3864                 gtk_widget_queue_resize (GTK_WIDGET (view));
3865         }
3866
3867         if (rotation != 0)
3868                 clear_selection (view);
3869
3870         g_object_notify (G_OBJECT (view), "rotation");
3871 }
3872
3873 int
3874 ev_view_get_rotation (EvView *view)
3875 {
3876         return view->rotation;
3877 }
3878
3879 static double
3880 zoom_for_size_fit_width (int doc_width,
3881                          int doc_height,
3882                          int target_width,
3883                          int target_height,
3884                          int vsb_width)
3885 {
3886         double scale;
3887
3888         scale = (double)target_width / doc_width;
3889
3890         if (doc_height * scale > target_height)
3891                 scale = (double) (target_width - vsb_width) / doc_width;
3892
3893         return scale;
3894 }
3895
3896 static double
3897 zoom_for_size_fit_height (int doc_width,
3898                           int doc_height,
3899                           int target_width,
3900                           int target_height,
3901                           int vsb_height)
3902 {
3903         double scale;
3904
3905         scale = (double)target_height / doc_height;
3906
3907         if (doc_width * scale > target_width)
3908                 scale = (double) (target_height - vsb_height) / doc_height;
3909
3910         return scale;
3911 }
3912
3913 static double
3914 zoom_for_size_best_fit (int doc_width,
3915                         int doc_height,
3916                         int target_width,
3917                         int target_height,
3918                         int vsb_width,
3919                         int hsb_width)
3920 {
3921         double w_scale;
3922         double h_scale;
3923
3924         w_scale = (double)target_width / doc_width;
3925         h_scale = (double)target_height / doc_height;
3926
3927         if (doc_height * w_scale > target_height)
3928                 w_scale = (double) (target_width - vsb_width) / doc_width;
3929         if (doc_width * h_scale > target_width)
3930                 h_scale = (double) (target_height - hsb_width) / doc_height;
3931
3932         return MIN (w_scale, h_scale);
3933 }
3934
3935
3936 static void
3937 ev_view_zoom_for_size_presentation (EvView *view,
3938                                     int     width,
3939                                     int     height)
3940 {
3941         int doc_width, doc_height;
3942         gdouble scale;
3943
3944         ev_page_cache_get_size (view->page_cache,
3945                                 view->current_page,
3946                                 view->rotation,
3947                                 1.0,
3948                                 &doc_width,
3949                                 &doc_height);
3950         scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, 0, 0);
3951         ev_view_set_zoom (view, scale, FALSE);
3952 }
3953
3954 static void
3955 ev_view_zoom_for_size_continuous_and_dual_page (EvView *view,
3956                            int     width,
3957                            int     height,
3958                            int     vsb_width,
3959                            int     hsb_height)
3960 {
3961         int doc_width, doc_height;
3962         GtkBorder border;
3963         gdouble scale;
3964
3965         ev_page_cache_get_max_width (view->page_cache,
3966                                      view->rotation,
3967                                      1.0,
3968                                      &doc_width);
3969         ev_page_cache_get_max_height (view->page_cache,
3970                                       view->rotation,
3971                                       1.0,
3972                                       &doc_height);
3973         compute_border (view, doc_width, doc_height, &border);
3974
3975         doc_width = doc_width * 2;
3976         width -= (2 * (border.left + border.right) + 3 * view->spacing);
3977         height -= (border.top + border.bottom + 2 * view->spacing - 1);
3978
3979         /* FIXME: We really need to calculate the overall height here, not the
3980          * page height.  We assume there's always a vertical scrollbar for
3981          * now.  We need to fix this. */
3982         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
3983                 scale = zoom_for_size_fit_width (doc_width, doc_height, width - vsb_width, height, 0);
3984         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
3985                 scale = zoom_for_size_best_fit (doc_width, doc_height, width - vsb_width, height, 0, hsb_height);
3986         else
3987                 g_assert_not_reached ();
3988
3989         ev_view_set_zoom (view, scale, FALSE);
3990 }
3991
3992 static void
3993 ev_view_zoom_for_size_continuous (EvView *view,
3994                                   int     width,
3995                                   int     height,
3996                                   int     vsb_width,
3997                                   int     hsb_height)
3998 {
3999         int doc_width, doc_height;
4000         GtkBorder border;
4001         gdouble scale;
4002
4003         ev_page_cache_get_max_width (view->page_cache,
4004                                      view->rotation,
4005                                      1.0,
4006                                      &doc_width);
4007         ev_page_cache_get_max_height (view->page_cache,
4008                                       view->rotation,
4009                                       1.0,
4010                                       &doc_height);
4011         compute_border (view, doc_width, doc_height, &border);
4012
4013         width -= (border.left + border.right + 2 * view->spacing);
4014         height -= (border.top + border.bottom + 2 * view->spacing - 1);
4015
4016         /* FIXME: We really need to calculate the overall height here, not the
4017          * page height.  We assume there's always a vertical scrollbar for
4018          * now.  We need to fix this. */
4019         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
4020                 scale = zoom_for_size_fit_width (doc_width, doc_height, width - vsb_width, height, 0);
4021         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
4022                 scale = zoom_for_size_best_fit (doc_width, doc_height, width - vsb_width, height, 0, hsb_height);
4023         else
4024                 g_assert_not_reached ();
4025
4026         ev_view_set_zoom (view, scale, FALSE);
4027 }
4028
4029 static void
4030 ev_view_zoom_for_size_dual_page (EvView *view,
4031                                  int     width,
4032                                  int     height,
4033                                  int     vsb_width,
4034                                  int     hsb_height)
4035 {
4036         GtkBorder border;
4037         gint doc_width, doc_height;
4038         gdouble scale;
4039         gint other_page;
4040
4041         other_page = view->current_page ^ 1;
4042
4043         /* Find the largest of the two. */
4044         ev_page_cache_get_size (view->page_cache,
4045                                 view->current_page,
4046                                 view->rotation,
4047                                 1.0,
4048                                 &doc_width, &doc_height);
4049
4050         if (other_page < ev_page_cache_get_n_pages (view->page_cache)) {
4051                 gint width_2, height_2;
4052                 ev_page_cache_get_size (view->page_cache,
4053                                         other_page,
4054                                         view->rotation,
4055                                         1.0,
4056                                         &width_2, &height_2);
4057                 if (width_2 > doc_width)
4058                         doc_width = width_2;
4059                 if (height_2 > doc_height)
4060                         doc_height = height_2;
4061         }
4062         compute_border (view, doc_width, doc_height, &border);
4063
4064         doc_width = doc_width * 2;
4065         width -= ((border.left + border.right)* 2 + 3 * view->spacing);
4066         height -= (border.top + border.bottom + 2 * view->spacing);
4067
4068         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
4069                 scale = zoom_for_size_fit_width (doc_width, doc_height, width, height, vsb_width);
4070         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
4071                 scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, vsb_width, hsb_height);
4072         else
4073                 g_assert_not_reached ();
4074
4075         ev_view_set_zoom (view, scale, FALSE);
4076 }
4077
4078 static void
4079 ev_view_zoom_for_size_single_page (EvView *view,
4080                                    int     width,
4081                                    int     height,
4082                                    int     vsb_width,
4083                                    int     hsb_height)
4084 {
4085         int doc_width, doc_height;
4086         GtkBorder border;
4087         gdouble scale;
4088
4089         ev_page_cache_get_size (view->page_cache,
4090                                 view->current_page,
4091                                 view->rotation,
4092                                 1.0,
4093                                 &doc_width,
4094                                 &doc_height);
4095         /* Get an approximate border */
4096         compute_border (view, width, height, &border);
4097
4098         width -= (border.left + border.right + 2 * view->spacing);
4099         height -= (border.top + border.bottom + 2 * view->spacing);
4100
4101         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
4102                 scale = zoom_for_size_fit_width (doc_width, doc_height, width, height, vsb_width);
4103         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
4104                 scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, vsb_width, hsb_height);
4105         else
4106                 g_assert_not_reached ();
4107
4108         ev_view_set_zoom (view, scale, FALSE);
4109 }
4110
4111 void
4112 ev_view_set_zoom_for_size (EvView *view,
4113                            int     width,
4114                            int     height,
4115                            int     vsb_width,
4116                            int     hsb_height)
4117 {
4118         g_return_if_fail (view->sizing_mode == EV_SIZING_FIT_WIDTH ||
4119                           view->sizing_mode == EV_SIZING_BEST_FIT);
4120         g_return_if_fail (width >= 0);
4121         g_return_if_fail (height >= 0);
4122
4123         if (view->document == NULL)
4124                 return;
4125
4126         if (view->presentation)
4127                 ev_view_zoom_for_size_presentation (view, width, height);
4128         else if (view->continuous && view->dual_page)
4129                 ev_view_zoom_for_size_continuous_and_dual_page (view, width, height, vsb_width, hsb_height);
4130         else if (view->continuous)
4131                 ev_view_zoom_for_size_continuous (view, width, height, vsb_width, hsb_height);
4132         else if (view->dual_page)
4133                 ev_view_zoom_for_size_dual_page (view, width, height, vsb_width, hsb_height);
4134         else
4135                 ev_view_zoom_for_size_single_page (view, width, height, vsb_width, hsb_height);
4136 }
4137
4138 /*** Status text messages ***/
4139
4140 const char *
4141 ev_view_get_status (EvView *view)
4142 {
4143         g_return_val_if_fail (EV_IS_VIEW (view), NULL);
4144
4145         return view->status;
4146 }
4147
4148 static void
4149 ev_view_set_status (EvView *view, const char *message)
4150 {
4151         g_return_if_fail (EV_IS_VIEW (view));
4152
4153         if (message != view->status) {
4154                 g_free (view->status);
4155                 view->status = g_strdup (message);
4156                 g_object_notify (G_OBJECT (view), "status");
4157         }
4158 }
4159
4160 static void
4161 update_find_status_message (EvView *view, gboolean this_page)
4162 {
4163         char *message;
4164
4165         if (this_page) {
4166                 int results;
4167
4168                 results = ev_document_find_get_n_results
4169                                 (EV_DOCUMENT_FIND (view->document),
4170                                  view->current_page);
4171                 /* TRANS: Sometimes this could be better translated as
4172                    "%d hit(s) on this page".  Therefore this string
4173                    contains plural cases. */
4174                 message = g_strdup_printf (ngettext ("%d found on this page",
4175                                                      "%d found on this page",
4176                                                      results),
4177                                            results);
4178         } else {
4179                 double percent;
4180
4181                 percent = ev_document_find_get_progress
4182                                 (EV_DOCUMENT_FIND (view->document));
4183                 message = g_strdup_printf (_("%3d%% remaining to search"),
4184                                            (int) ((1.0 - percent) * 100));
4185
4186         }
4187         ev_view_set_find_status (view, message);
4188         g_free (message);
4189 }
4190
4191 const char *
4192 ev_view_get_find_status (EvView *view)
4193 {
4194         g_return_val_if_fail (EV_IS_VIEW (view), NULL);
4195
4196         return view->find_status;
4197 }
4198
4199 static void
4200 ev_view_set_find_status (EvView *view, const char *message)
4201 {
4202         g_return_if_fail (EV_IS_VIEW (view));
4203
4204         g_free (view->find_status);
4205         view->find_status = g_strdup (message);
4206         g_object_notify (G_OBJECT (view), "find-status");
4207 }
4208
4209 /*** Find ***/
4210
4211 static void
4212 jump_to_find_result (EvView *view)
4213 {
4214         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
4215         EvRectangle rect;
4216         GdkRectangle view_rect;
4217         int n_results;
4218         int page = view->current_page;
4219
4220         n_results = ev_document_find_get_n_results (find, page);
4221
4222         if (n_results > 0  && view->find_result < n_results) {
4223                 ev_document_find_get_result
4224                         (find, page, view->find_result, &rect);
4225
4226                 doc_rect_to_view_rect (view, page, &rect, &view_rect);
4227                 ensure_rectangle_is_visible (view, &view_rect);
4228         }
4229 }
4230
4231 /**
4232  * jump_to_find_page
4233  * @view: #EvView instance
4234  * @direction: Direction to look
4235  * @shift: Shift from current page
4236  *
4237  * Jumps to the first page that has occurences of searched word.
4238  * Uses a direction where to look and a shift from current page.
4239  *
4240  */
4241 static void
4242 jump_to_find_page (EvView *view, EvViewFindDirection direction, gint shift)
4243 {
4244         int n_pages, i;
4245
4246         n_pages = ev_page_cache_get_n_pages (view->page_cache);
4247
4248         for (i = 0; i < n_pages; i++) {
4249                 int has_results;
4250                 int page;
4251
4252                 if (direction == EV_VIEW_FIND_NEXT)
4253                         page = view->current_page + i;
4254                 else
4255                         page = view->current_page - i;
4256                 page += shift;
4257
4258                 if (page >= n_pages) {
4259                         page = page - n_pages;
4260                 }
4261                 if (page < 0)
4262                         page = page + n_pages;
4263
4264                 has_results = ev_document_find_page_has_results
4265                                 (EV_DOCUMENT_FIND (view->document), page);
4266                 if (has_results == -1) {
4267                         break;
4268                 } else if (has_results == 1) {
4269                         ev_page_cache_set_current_page (view->page_cache, page);
4270                         break;
4271                 }
4272         }
4273 }
4274
4275 gboolean
4276 ev_view_can_find_next (EvView *view)
4277 {
4278         if (EV_IS_DOCUMENT_FIND (view->document)) {
4279                 EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
4280                 int i, n_pages;
4281
4282                 n_pages = ev_page_cache_get_n_pages (view->page_cache);
4283                 for (i = 0; i < n_pages; i++) {
4284                         if (ev_document_find_get_n_results (find, i) > 0) {
4285                                 return TRUE;
4286                         }
4287                 }
4288         }
4289
4290         return FALSE;
4291 }
4292
4293 void
4294 ev_view_find_next (EvView *view)
4295 {
4296         int n_results, n_pages;
4297         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
4298
4299         n_results = ev_document_find_get_n_results (find, view->current_page);
4300
4301         n_pages = ev_page_cache_get_n_pages (view->page_cache);
4302
4303         view->find_result++;
4304
4305         if (view->find_result >= n_results) {
4306
4307                 view->find_result = 0;
4308                 jump_to_find_page (view, EV_VIEW_FIND_NEXT, 1);
4309                 jump_to_find_result (view);
4310         } else {
4311                 jump_to_find_result (view);
4312                 gtk_widget_queue_draw (GTK_WIDGET (view));
4313         }
4314 }
4315
4316 gboolean
4317 ev_view_can_find_previous (EvView *view)
4318 {
4319         if (EV_IS_DOCUMENT_FIND (view->document)) {
4320                 EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
4321                 int i, n_pages;
4322
4323                 n_pages = ev_page_cache_get_n_pages (view->page_cache);
4324                 for (i = n_pages - 1; i >= 0; i--) {
4325                         if (ev_document_find_get_n_results (find, i) > 0) {
4326                                 return TRUE;
4327                         }
4328                 }
4329         }
4330
4331         return FALSE;
4332 }
4333 void
4334 ev_view_find_previous (EvView *view)
4335 {
4336         int n_results, n_pages;
4337         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
4338         EvPageCache *page_cache;
4339
4340         page_cache = ev_page_cache_get (view->document);
4341
4342         n_results = ev_document_find_get_n_results (find, view->current_page);
4343
4344         n_pages = ev_page_cache_get_n_pages (page_cache);
4345
4346         view->find_result--;
4347
4348         if (view->find_result < 0) {
4349
4350                 jump_to_find_page (view, EV_VIEW_FIND_PREV, -1);
4351                 view->find_result = ev_document_find_get_n_results (find, view->current_page) - 1;
4352                 jump_to_find_result (view);
4353         } else {
4354                 jump_to_find_result (view);
4355                 gtk_widget_queue_draw (GTK_WIDGET (view));
4356         }
4357 }
4358
4359 void ev_view_search_changed (EvView *view)
4360 {
4361         /* search string has changed, focus on new search result */
4362         view->jump_to_find_result = TRUE;
4363 }
4364
4365 /*** Selections ***/
4366
4367 /* compute_new_selection_rect/text calculates the area currently selected by
4368  * view_rect.  each handles a different mode;
4369  */
4370 static GList *
4371 compute_new_selection_rect (EvView       *view,
4372                             GdkPoint     *start,
4373                             GdkPoint     *stop)
4374 {
4375         GdkRectangle view_rect;
4376         int n_pages, i;
4377         GList *list = NULL;
4378
4379         g_assert (view->selection_mode == EV_VIEW_SELECTION_RECTANGLE);
4380
4381         view_rect.x = MIN (start->x, stop->x);
4382         view_rect.y = MIN (start->y, stop->y);
4383         view_rect.width = MAX (start->x, stop->x) - view_rect.x;
4384         view_rect.width = MAX (start->y, stop->y) - view_rect.y;
4385
4386         n_pages = ev_page_cache_get_n_pages (view->page_cache);
4387
4388         for (i = 0; i < n_pages; i++) {
4389                 GdkRectangle page_area;
4390                 GtkBorder border;
4391
4392                 if (get_page_extents (view, i, &page_area, &border)) {
4393                         GdkRectangle overlap;
4394
4395                         if (gdk_rectangle_intersect (&page_area, &view_rect, &overlap)) {
4396                                 EvViewSelection *selection;
4397
4398                                 selection = g_new0 (EvViewSelection, 1);
4399                                 selection->page = i;
4400                                 view_rect_to_doc_rect (view, &overlap, &page_area,
4401                                                        &(selection->rect));
4402
4403                                 list = g_list_append (list, selection);
4404                         }
4405                 }
4406         }
4407
4408         return list;
4409 }
4410
4411 static gboolean
4412 gdk_rectangle_point_in (GdkRectangle *rectangle,
4413                         GdkPoint     *point)
4414 {
4415         return rectangle->x <= point->x &&
4416                 rectangle->y <= point->y &&
4417                 point->x < rectangle->x + rectangle->width &&
4418                 point->y < rectangle->y + rectangle->height;
4419 }
4420
4421 static GList *
4422 compute_new_selection_text (EvView   *view,
4423                             GdkPoint *start,
4424                             GdkPoint *stop)
4425 {
4426         int n_pages, i, first, last;
4427         GList *list = NULL;
4428         EvViewSelection *selection;
4429         gint width, height;
4430         int start_page, end_page;
4431
4432         g_assert (view->selection_mode == EV_VIEW_SELECTION_TEXT);
4433
4434         n_pages = ev_page_cache_get_n_pages (view->page_cache);
4435
4436         /* First figure out the range of pages the selection
4437          * affects. */
4438         first = n_pages;
4439         last = 0;
4440         if (view->continuous) {
4441                 start_page = 0;
4442                 end_page = n_pages;
4443         } else if (view->dual_page) {
4444                 start_page = view->start_page;
4445                 end_page = view->end_page + 1;
4446         } else {
4447                 start_page = view->current_page;
4448                 end_page = view->current_page + 1;
4449         }
4450
4451         for (i = start_page; i < end_page; i++) {
4452                 GdkRectangle page_area;
4453                 GtkBorder border;
4454
4455                 get_page_extents (view, i, &page_area, &border);
4456                 if (gdk_rectangle_point_in (&page_area, start) ||
4457                     gdk_rectangle_point_in (&page_area, stop)) {
4458                         if (first == n_pages)
4459                                 first = i;
4460                         last = i;
4461                 }
4462
4463         }
4464
4465         /* Now create a list of EvViewSelection's for the affected
4466          * pages.  This could be an empty list, a list of just one
4467          * page or a number of pages.*/
4468         for (i = first; i < last + 1; i++) {
4469                 GdkRectangle page_area;
4470                 GtkBorder border;
4471                 GdkPoint *point;
4472
4473                 ev_page_cache_get_size (view->page_cache, i,
4474                                         view->rotation,
4475                                         1.0, &width, &height);
4476
4477                 selection = g_new0 (EvViewSelection, 1);
4478                 selection->page = i;
4479                 selection->rect.x1 = selection->rect.y1 = 0;
4480                 selection->rect.x2 = width;
4481                 selection->rect.y2 = height;
4482
4483                 get_page_extents (view, i, &page_area, &border);
4484
4485                 if (gdk_rectangle_point_in (&page_area, start))
4486                         point = start;
4487                 else
4488                         point = stop;
4489
4490                 if (i == first)
4491                         view_point_to_doc_point (view, point, &page_area,
4492                                                  &selection->rect.x1,
4493                                                  &selection->rect.y1);
4494
4495                 /* If the selection is contained within just one page,
4496                  * make sure we don't write 'start' into both points
4497                  * in selection->rect. */
4498                 if (first == last)
4499                         point = stop;
4500
4501                 if (i == last)
4502                         view_point_to_doc_point (view, point, &page_area,
4503                                                  &selection->rect.x2,
4504                                                  &selection->rect.y2);
4505
4506                 list = g_list_append (list, selection);
4507         }
4508
4509         return list;
4510 }
4511
4512 /* This function takes the newly calculated list, and figures out which regions
4513  * have changed.  It then queues a redraw approporiately.
4514  */
4515 static void
4516 merge_selection_region (EvView *view,
4517                         GList  *new_list)
4518 {
4519         GList *old_list;
4520         GList *new_list_ptr, *old_list_ptr;
4521
4522         /* Update the selection */
4523         old_list = ev_pixbuf_cache_get_selection_list (view->pixbuf_cache);
4524         g_list_foreach (view->selection_info.selections, (GFunc)selection_free, NULL);
4525         view->selection_info.selections = new_list;
4526         ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, new_list);
4527         g_object_notify (G_OBJECT (view), "has-selection");
4528
4529         new_list_ptr = new_list;
4530         old_list_ptr = old_list;
4531
4532         while (new_list_ptr || old_list_ptr) {
4533                 EvViewSelection *old_sel, *new_sel;
4534                 int cur_page;
4535                 GdkRegion *region = NULL;
4536
4537                 new_sel = (new_list_ptr) ? (new_list_ptr->data) : NULL;
4538                 old_sel = (old_list_ptr) ? (old_list_ptr->data) : NULL;
4539
4540                 /* Assume that the lists are in order, and we run through them
4541                  * comparing them, one page at a time.  We come out with the
4542                  * first page we see. */
4543                 if (new_sel && old_sel) {
4544                         if (new_sel->page < old_sel->page) {
4545                                 new_list_ptr = new_list_ptr->next;
4546                                 old_sel = NULL;
4547                         } else if (new_sel->page > old_sel->page) {
4548                                 old_list_ptr = old_list_ptr->next;
4549                                 new_sel = NULL;
4550                         } else {
4551                                 new_list_ptr = new_list_ptr->next;
4552                                 old_list_ptr = old_list_ptr->next;
4553                         }
4554                 } else if (new_sel) {
4555                         new_list_ptr = new_list_ptr->next;
4556                 } else if (old_sel) {
4557                         old_list_ptr = old_list_ptr->next;
4558                 }
4559
4560                 g_assert (new_sel || old_sel);
4561
4562                 /* is the page we're looking at on the screen?*/
4563                 cur_page = new_sel ? new_sel->page : old_sel->page;
4564                 if (cur_page < view->start_page || cur_page > view->end_page)
4565                         continue;
4566
4567                 /* seed the cache with a new page.  We are going to need the new
4568                  * region too. */
4569                 if (new_sel) {
4570                         GdkRegion *tmp_region = NULL;
4571
4572                         ev_pixbuf_cache_get_selection_surface (view->pixbuf_cache,
4573                                                                cur_page,
4574                                                                view->scale,
4575                                                                &tmp_region);
4576
4577                         if (tmp_region) {
4578                                 new_sel->covered_region = gdk_region_copy (tmp_region);
4579                         }
4580                 }
4581
4582                 /* Now we figure out what needs redrawing */
4583                 if (old_sel && new_sel) {
4584                         if (old_sel->covered_region && new_sel->covered_region) {
4585                                 /* We only want to redraw the areas that have
4586                                  * changed, so we xor the old and new regions
4587                                  * and redraw if it's different */
4588                                 region = gdk_region_copy (old_sel->covered_region);
4589                                 gdk_region_xor (region, new_sel->covered_region);
4590                                 if (gdk_region_empty (region)) {
4591                                         gdk_region_destroy (region);
4592                                         region = NULL;
4593                                 }
4594                         } else if (old_sel->covered_region) {
4595                                 region = gdk_region_copy (old_sel->covered_region);
4596                         } else if (new_sel->covered_region) {
4597                                 region = gdk_region_copy (new_sel->covered_region);
4598                         }
4599                 } else if (old_sel && !new_sel) {
4600                         if (old_sel->covered_region && !gdk_region_empty (old_sel->covered_region)) {
4601                                 region = gdk_region_copy (old_sel->covered_region);
4602                         }
4603                 } else if (!old_sel && new_sel) {
4604                         if (new_sel->covered_region && !gdk_region_empty (new_sel->covered_region)) {
4605                                 region = gdk_region_copy (new_sel->covered_region);
4606                         }
4607                 } else {
4608                         g_assert_not_reached ();
4609                 }
4610
4611                 /* Redraw the damaged region! */
4612                 if (region) {
4613                         GdkRectangle page_area;
4614                         GtkBorder border;
4615
4616                         /* I don't know why but the region is smaller
4617                          * than expected. This hack fixes it, I guess
4618                          * 10 pixels more won't hurt
4619                          */
4620                         gdk_region_shrink (region, -5, -5);
4621
4622                         get_page_extents (view, cur_page, &page_area, &border);
4623                         gdk_region_offset (region,
4624                                            page_area.x + border.left - view->scroll_x,
4625                                            page_area.y + border.top - view->scroll_y);
4626                         gdk_window_invalidate_region (GTK_WIDGET (view)->window, region, TRUE);
4627                         gdk_region_destroy (region);
4628                 }
4629         }
4630
4631         /* Free the old list, now that we're done with it. */
4632         g_list_foreach (old_list, (GFunc) selection_free, NULL);
4633 }
4634
4635 static void
4636 compute_selections (EvView   *view,
4637                     GdkPoint *start,
4638                     GdkPoint *stop)
4639 {
4640         GList *list;
4641
4642         if (view->selection_mode == EV_VIEW_SELECTION_RECTANGLE)
4643                 list = compute_new_selection_rect (view, start, stop);
4644         else
4645                 list = compute_new_selection_text (view, start, stop);
4646         merge_selection_region (view, list);
4647 }
4648
4649 /* Free's the selection.  It's up to the caller to queue redraws if needed.
4650  */
4651 static void
4652 selection_free (EvViewSelection *selection)
4653 {
4654         if (selection->covered_region)
4655                 gdk_region_destroy (selection->covered_region);
4656         g_free (selection);
4657 }
4658
4659 static void
4660 clear_selection (EvView *view)
4661 {
4662         g_list_foreach (view->selection_info.selections, (GFunc)selection_free, NULL);
4663         view->selection_info.selections = NULL;
4664         view->selection_info.in_selection = FALSE;
4665         if (view->pixbuf_cache)
4666                 ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, NULL);
4667         g_object_notify (G_OBJECT (view), "has-selection");
4668 }
4669
4670
4671 void
4672 ev_view_select_all (EvView *view)
4673 {
4674         int n_pages, i;
4675
4676         /* Disable selection on rotated pages for the 0.4.0 series */
4677         if (view->rotation != 0)
4678                 return;
4679
4680         clear_selection (view);
4681
4682         n_pages = ev_page_cache_get_n_pages (view->page_cache);
4683         for (i = 0; i < n_pages; i++) {
4684                 int width, height;
4685                 EvViewSelection *selection;
4686
4687                 ev_page_cache_get_size (view->page_cache,
4688                                         i,
4689                                         view->rotation,
4690                                         1.0, &width, &height);
4691
4692                 selection = g_new0 (EvViewSelection, 1);
4693                 selection->page = i;
4694                 selection->rect.x1 = selection->rect.y1 = 0;
4695                 selection->rect.x2 = width;
4696                 selection->rect.y2 = height;
4697
4698                 view->selection_info.selections = g_list_append (view->selection_info.selections, selection);
4699         }
4700
4701         ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, view->selection_info.selections);
4702         g_object_notify (G_OBJECT (view), "has-selection");
4703         gtk_widget_queue_draw (GTK_WIDGET (view));
4704 }
4705
4706 gboolean
4707 ev_view_get_has_selection (EvView *view)
4708 {
4709         return view->selection_info.selections != NULL;
4710 }
4711
4712 static char *
4713 get_selected_text (EvView *ev_view)
4714 {
4715         GString *text;
4716         GList *l;
4717         gchar *normalized_text;
4718
4719         text = g_string_new (NULL);
4720
4721         ev_document_doc_mutex_lock ();
4722
4723         for (l = ev_view->selection_info.selections; l != NULL; l = l->next) {
4724                 EvViewSelection *selection = (EvViewSelection *)l->data;
4725                 char *tmp;
4726
4727                 tmp = ev_document_get_text (ev_view->document,
4728                                             selection->page,
4729                                             &selection->rect);
4730                 g_string_append (text, tmp);
4731                 g_free (tmp);
4732         }
4733
4734         ev_document_doc_mutex_unlock ();
4735
4736         normalized_text = g_utf8_normalize (text->str, text->len, G_NORMALIZE_NFKC);
4737         g_string_free (text, TRUE);
4738         return normalized_text;
4739 }
4740
4741 void
4742 ev_view_copy (EvView *ev_view)
4743 {
4744         GtkClipboard *clipboard;
4745         char *text;
4746
4747         if (!ev_document_can_get_text (ev_view->document)) {
4748                 return;
4749         }
4750
4751         text = get_selected_text (ev_view);
4752         clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view),
4753                                               GDK_SELECTION_CLIPBOARD);
4754         gtk_clipboard_set_text (clipboard, text, -1);
4755         g_free (text);
4756 }
4757
4758 static void
4759 ev_view_primary_get_cb (GtkClipboard     *clipboard,
4760                         GtkSelectionData *selection_data,
4761                         guint             info,
4762                         gpointer          data)
4763 {
4764         EvView *ev_view = EV_VIEW (data);
4765         char *text;
4766
4767         if (!ev_document_can_get_text (ev_view->document)) {
4768                 return;
4769         }
4770
4771         text = get_selected_text (ev_view);
4772         if (text) {
4773                 gtk_selection_data_set_text (selection_data, text, -1);
4774                 g_free (text);
4775         }
4776 }
4777
4778 static void
4779 ev_view_primary_clear_cb (GtkClipboard *clipboard,
4780                           gpointer      data)
4781 {
4782         EvView *view = EV_VIEW (data);
4783
4784         clear_selection (view);
4785 }
4786
4787 static void
4788 ev_view_update_primary_selection (EvView *ev_view)
4789 {
4790         GtkClipboard *clipboard;
4791
4792         clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view),
4793                                               GDK_SELECTION_PRIMARY);
4794
4795         if (ev_view->selection_info.selections) {
4796                 if (!gtk_clipboard_set_with_owner (clipboard,
4797                                                    clipboard_targets,
4798                                                    G_N_ELEMENTS (clipboard_targets),
4799                                                    ev_view_primary_get_cb,
4800                                                    ev_view_primary_clear_cb,
4801                                                    G_OBJECT (ev_view)))
4802                         ev_view_primary_clear_cb (clipboard, ev_view);
4803         } else {
4804                 if (gtk_clipboard_get_owner (clipboard) == G_OBJECT (ev_view))
4805                         gtk_clipboard_clear (clipboard);
4806         }
4807 }
4808
4809 /*** Cursor operations ***/
4810
4811 static GdkCursor *
4812 ev_view_create_invisible_cursor(void)
4813 {
4814        GdkBitmap *empty;
4815        GdkColor black = { 0, 0, 0, 0 };
4816        static char bits[] = { 0x00 };
4817
4818        empty = gdk_bitmap_create_from_data (NULL, bits, 1, 1);
4819
4820        return gdk_cursor_new_from_pixmap (empty, empty, &black, &black, 0, 0);
4821 }
4822
4823 static void
4824 ev_view_set_cursor (EvView *view, EvViewCursor new_cursor)
4825 {
4826         GdkCursor *cursor = NULL;
4827         GdkDisplay *display;
4828         GtkWidget *widget;
4829
4830         if (view->cursor == new_cursor) {
4831                 return;
4832         }
4833
4834         widget = gtk_widget_get_toplevel (GTK_WIDGET (view));
4835         display = gtk_widget_get_display (widget);
4836         view->cursor = new_cursor;
4837
4838         switch (new_cursor) {
4839                 case EV_VIEW_CURSOR_NORMAL:
4840                         gdk_window_set_cursor (widget->window, NULL);
4841                         break;
4842                 case EV_VIEW_CURSOR_IBEAM:
4843                         cursor = gdk_cursor_new_for_display (display, GDK_XTERM);
4844                         break;
4845                 case EV_VIEW_CURSOR_LINK:
4846                         cursor = gdk_cursor_new_for_display (display, GDK_HAND2);
4847                         break;
4848                 case EV_VIEW_CURSOR_WAIT:
4849                         cursor = gdk_cursor_new_for_display (display, GDK_WATCH);
4850                         break;
4851                 case EV_VIEW_CURSOR_HIDDEN:
4852                         cursor = ev_view_create_invisible_cursor ();
4853                         break;
4854                 case EV_VIEW_CURSOR_DRAG:
4855                         cursor = gdk_cursor_new_for_display (display, GDK_FLEUR);
4856                         break;
4857         }
4858
4859         if (cursor) {
4860                 gdk_window_set_cursor (widget->window, cursor);
4861                 gdk_cursor_unref (cursor);
4862                 gdk_flush();
4863         }
4864 }
4865
4866 void
4867 ev_view_hide_cursor (EvView *view)
4868 {
4869        ev_view_set_cursor (view, EV_VIEW_CURSOR_HIDDEN);
4870 }
4871
4872 void
4873 ev_view_show_cursor (EvView *view)
4874 {
4875        ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
4876 }
4877
4878 static void
4879 ev_view_reset_presentation_state (EvView *view)
4880 {
4881         if (!view->presentation ||
4882             view->presentation_state == EV_PRESENTATION_NORMAL)
4883                 return;
4884
4885         view->presentation_state = EV_PRESENTATION_NORMAL;
4886         gdk_window_set_background (GTK_WIDGET (view)->window,
4887                                    &GTK_WIDGET (view)->style->black);
4888         gtk_widget_queue_draw (GTK_WIDGET (view));
4889 }
4890
4891 gboolean
4892 ev_view_next_page (EvView *view)
4893 {
4894         int page, n_pages;
4895
4896         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
4897
4898         if (!view->page_cache)
4899                 return FALSE;
4900
4901         ev_view_presentation_transition_stop (view);
4902         ev_view_reset_presentation_state (view);
4903
4904         page = ev_page_cache_get_current_page (view->page_cache);
4905         n_pages = ev_page_cache_get_n_pages (view->page_cache);
4906
4907         if (view->dual_page && !view->presentation)
4908                 page = page + 2;
4909         else
4910                 page = page + 1;
4911
4912         if (page < n_pages) {
4913                 ev_page_cache_set_current_page (view->page_cache, page);
4914                 return TRUE;
4915         } else if (view->presentation && page == n_pages) {
4916                 view->presentation_state = EV_PRESENTATION_END;
4917                 gtk_widget_queue_draw (GTK_WIDGET (view));
4918                 return TRUE;
4919         } else if (view->dual_page && page == n_pages) {
4920                 ev_page_cache_set_current_page (view->page_cache, page - 1);
4921                 return TRUE;
4922         } else {
4923                 return FALSE;
4924         }
4925 }
4926
4927 gboolean
4928 ev_view_previous_page (EvView *view)
4929 {
4930         int page;
4931
4932         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
4933
4934         if (!view->page_cache)
4935                 return FALSE;
4936
4937         if (view->presentation &&
4938             view->presentation_state == EV_PRESENTATION_END) {
4939                 ev_view_reset_presentation_state (view);
4940                 return TRUE;
4941         }
4942
4943         ev_view_reset_presentation_state (view);
4944
4945         page = ev_page_cache_get_current_page (view->page_cache);
4946
4947         if (view->dual_page && !view->presentation)
4948                 page = page - 2;
4949         else
4950                 page = page - 1;
4951
4952         if (page >= 0) {
4953                 ev_page_cache_set_current_page (view->page_cache, page);
4954                 return TRUE;
4955         } else if (ev_view_get_dual_page (view) && page == -1) {
4956                 ev_page_cache_set_current_page (view->page_cache, 0);
4957                 return TRUE;
4958         } else {
4959                 return FALSE;
4960         }
4961 }
4962
4963 /*** Enum description for usage in signal ***/
4964
4965 GType
4966 ev_sizing_mode_get_type (void)
4967 {
4968   static GType etype = 0;
4969   if (etype == 0) {
4970     static const GEnumValue values[] = {
4971       { EV_SIZING_FIT_WIDTH, "EV_SIZING_FIT_WIDTH", "fit-width" },
4972       { EV_SIZING_BEST_FIT, "EV_SIZING_BEST_FIT", "best-fit" },
4973       { EV_SIZING_FREE, "EV_SIZING_FREE", "free" },
4974       { 0, NULL, NULL }
4975     };
4976     etype = g_enum_register_static ("EvSizingMode", values);
4977   }
4978   return etype;
4979 }
4980
4981 GType
4982 ev_scroll_type_get_type (void)
4983 {
4984   static GType etype = 0;
4985   if (etype == 0) {
4986     static const GEnumValue values[] = {
4987       { EV_SCROLL_PAGE_FORWARD, "EV_SCROLL_PAGE_FORWARD", "scroll-page-forward" },
4988       { EV_SCROLL_PAGE_BACKWARD, "EV_SCROLL_PAGE_BACKWARD", "scroll-page-backward" },
4989       { EV_SCROLL_STEP_FORWARD, "EV_SCROLL_STEP_FORWARD", "scroll-step-forward" },
4990       { EV_SCROLL_STEP_FORWARD, "EV_SCROLL_STEP_FORWARD", "scroll-step-forward" },
4991       { EV_SCROLL_STEP_UP, "EV_SCROLL_STEP_UP", "scroll-step-up" },
4992       { EV_SCROLL_STEP_DOWN, "EV_SCROLL_STEP_DOWN", "scroll-step-down" },
4993       { 0, NULL, NULL }
4994     };
4995     etype = g_enum_register_static ("EvScrollType", values);
4996   }
4997   return etype;
4998 }