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