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