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