shell/ev-view.c

   1 /* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8; c-indent-level: 8 -*- */
   2 /* this file is part of evince, a gnome document viewer
   3  *
   4  *  Copyright (C) 2004 Red Hat, Inc
   5  *
   6  * Evince is free software; you can redistribute it and/or modify it
   7  * under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * Evince is distributed in the hope that it will be useful, but
  12  * WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
  19  */
  20
  21 #include <stdlib.h>
  22 #include <math.h>
  23 #include <string.h>
  24 #include <gtk/gtkalignment.h>
  25 #include <glib/gi18n.h>
  26 #include <gtk/gtkbindings.h>
  27 #include <gtk/gtkselection.h>
  28 #include <gtk/gtkclipboard.h>
  29 #include <gdk/gdkkeysyms.h>
  30 #include <libgnomevfs/gnome-vfs-utils.h>
  31
  32 #include "ev-marshal.h"
  33 #include "ev-view.h"
  34 #include "ev-view-private.h"
  35 #include "ev-utils.h"
  36 #include "ev-selection.h"
  37 #include "ev-document-links.h"
  38 #include "ev-document-find.h"
  39 #include "ev-document-transition.h"
  40 #include "ev-document-misc.h"
  41 #include "ev-debug.h"
  42 #include "ev-job-queue.h"
  43 #include "ev-page-cache.h"
  44 #include "ev-pixbuf-cache.h"
  45 #include "ev-tooltip.h"
  46 #include "ev-application.h"
  47
  48 #define EV_VIEW_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass), EV_TYPE_VIEW, EvViewClass))
  49 #define EV_IS_VIEW_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), EV_TYPE_VIEW))
  50 #define EV_VIEW_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj), EV_TYPE_VIEW, EvViewClass))
  51
  52
  53 enum {
  54         PROP_0,
  55         PROP_STATUS,
  56         PROP_FIND_STATUS,
  57         PROP_CONTINUOUS,
  58         PROP_DUAL_PAGE,
  59         PROP_FULLSCREEN,
  60         PROP_PRESENTATION,
  61         PROP_SIZING_MODE,
  62         PROP_ZOOM,
  63         PROP_ROTATION,
  64         PROP_HAS_SELECTION,
  65 };
  66
  67 enum {
  68         SIGNAL_BINDING_ACTIVATED,
  69         SIGNAL_ZOOM_INVALID,
  70         SIGNAL_EXTERNAL_LINK,
  71         SIGNAL_POPUP_MENU,
  72         N_SIGNALS,
  73 };
  74
  75 enum {
  76         TARGET_STRING,
  77         TARGET_TEXT,
  78         TARGET_COMPOUND_TEXT,
  79         TARGET_UTF8_STRING,
  80         TARGET_TEXT_BUFFER_CONTENTS
  81 };
  82
  83 static const GtkTargetEntry clipboard_targets[] = {
  84         { "STRING", 0, TARGET_STRING },
  85         { "TEXT",   0, TARGET_TEXT },
  86         { "COMPOUND_TEXT", 0, TARGET_COMPOUND_TEXT },
  87         { "UTF8_STRING", 0, TARGET_UTF8_STRING },
  88 };
  89
  90 static const GtkTargetEntry view_drop_targets[] = {
  91         { "text/uri-list", 0, 0 }
  92 };
  93
  94 static guint signals[N_SIGNALS];
  95
  96 typedef enum {
  97         EV_VIEW_FIND_NEXT,
  98         EV_VIEW_FIND_PREV
  99 } EvViewFindDirection;
 100
 101 #define ZOOM_IN_FACTOR  1.2
 102 #define ZOOM_OUT_FACTOR (1.0/ZOOM_IN_FACTOR)
 103
 104 #define MIN_SCALE 0.05409
 105 #define MAX_SCALE 4.0
 106
 107 #define SCROLL_TIME 150
 108
 109 /*** Scrolling ***/
 110 static void       scroll_to_current_page                     (EvView *view,
 111                                                               GtkOrientation orientation);
 112 static void       ev_view_set_scroll_adjustments             (EvView             *view,
 113                                                               GtkAdjustment      *hadjustment,
 114                                                               GtkAdjustment      *vadjustment);
 115 static void       view_update_range_and_current_page         (EvView             *view);
 116 static void       set_scroll_adjustment                      (EvView             *view,
 117                                                               GtkOrientation      orientation,
 118                                                               GtkAdjustment      *adjustment);
 119 static void       ev_view_set_scroll_adjustments             (EvView             *view,
 120                                                               GtkAdjustment      *hadjustment,
 121                                                               GtkAdjustment      *vadjustment);
 122 static void       add_scroll_binding_keypad                  (GtkBindingSet      *binding_set,
 123                                                               guint               keyval,
 124                                                               GdkModifierType modifiers,
 125                                                               EvScrollType       scroll,
 126                                                               gboolean            horizontal);
 127 static void       ensure_rectangle_is_visible                (EvView             *view,
 128                                                               GdkRectangle       *rect);
 129
 130 /*** Geometry computations ***/
 131 static void       compute_border                             (EvView             *view,
 132                                                               int                 width,
 133                                                               int                 height,
 134                                                               GtkBorder          *border);
 135 static void       get_page_y_offset                          (EvView *view,
 136                                                               int page,
 137                                                               double zoom,
 138                                                               int *y_offset);
 139 static gboolean   get_page_extents                           (EvView             *view,
 140                                                               gint                page,
 141                                                               GdkRectangle       *page_area,
 142                                                               GtkBorder          *border);
 143 static void       view_rect_to_doc_rect                      (EvView             *view,
 144                                                               GdkRectangle       *view_rect,
 145                                                               GdkRectangle       *page_area,
 146                                                               EvRectangle        *doc_rect);
 147 static void       doc_rect_to_view_rect                      (EvView             *view,
 148                                                               int                 page,
 149                                                               EvRectangle        *doc_rect,
 150                                                               GdkRectangle       *view_rect);
 151 static void       find_page_at_location                      (EvView             *view,
 152                                                               gdouble             x,
 153                                                               gdouble             y,
 154                                                               gint               *page,
 155                                                               gint               *x_offset,
 156                                                               gint               *y_offset);
 157 static gboolean  doc_point_to_view_point                     (EvView       *view,
 158                                                               int           page,
 159                                                               EvPoint      *doc_point,
 160                                                               GdkPoint     *view_point);
 161 /*** Hyperrefs ***/
 162 static EvLink *   ev_view_get_link_at_location               (EvView  *view,
 163                                                               gdouble  x,
 164                                                               gdouble  y);
 165 static char*      tip_from_link                              (EvView             *view,
 166                                                               EvLink             *link);
 167 static void       handle_link_over_xy                        (EvView *view,
 168                                                               gint x,
 169                                                               gint y);
 170 /*** GtkWidget implementation ***/
 171 static void       ev_view_size_request_continuous_dual_page  (EvView             *view,
 172                                                               GtkRequisition     *requisition);
 173 static void       ev_view_size_request_continuous            (EvView             *view,
 174                                                               GtkRequisition     *requisition);
 175 static void       ev_view_size_request_dual_page             (EvView             *view,
 176                                                               GtkRequisition     *requisition);
 177 static void       ev_view_size_request_single_page           (EvView             *view,
 178                                                               GtkRequisition     *requisition);
 179 static void       ev_view_size_request                       (GtkWidget          *widget,
 180                                                               GtkRequisition     *requisition);
 181 static void       ev_view_size_allocate                      (GtkWidget          *widget,
 182                                                               GtkAllocation      *allocation);
 183 static void       ev_view_realize                            (GtkWidget          *widget);
 184 static gboolean   ev_view_scroll_event                       (GtkWidget          *widget,
 185                                                               GdkEventScroll     *event);
 186 static gboolean   ev_view_expose_event                       (GtkWidget          *widget,
 187                                                               GdkEventExpose     *event);
 188 static gboolean   ev_view_popup_menu                         (GtkWidget          *widget);
 189 static gboolean   ev_view_button_press_event                 (GtkWidget          *widget,
 190                                                               GdkEventButton     *event);
 191 static gboolean   ev_view_motion_notify_event                (GtkWidget          *widget,
 192                                                               GdkEventMotion     *event);
 193 static gboolean   ev_view_button_release_event               (GtkWidget          *widget,
 194                                                               GdkEventButton     *event);
 195 static gboolean   ev_view_enter_notify_event                 (GtkWidget          *widget,
 196                                                               GdkEventCrossing   *event);
 197 static gboolean   ev_view_leave_notify_event                 (GtkWidget          *widget,
 198                                                               GdkEventCrossing   *event);
 199 static void       ev_view_style_set                          (GtkWidget          *widget,
 200                                                               GtkStyle           *old_style);
 201
 202 static AtkObject *ev_view_get_accessible                     (GtkWidget *widget);
 203
 204 /*** Drawing ***/
 205 static guint32    ev_gdk_color_to_rgb                        (const GdkColor     *color);
 206 static void       draw_rubberband                            (GtkWidget          *widget,
 207                                                               GdkWindow          *window,
 208                                                               const GdkRectangle *rect,
 209                                                               guchar              alpha);
 210 static void       highlight_find_results                     (EvView             *view,
 211                                                               int                 page);
 212 static void       draw_one_page                              (EvView             *view,
 213                                                               gint                page,
 214                                                               GdkRectangle       *page_area,
 215                                                               GtkBorder          *border,
 216                                                               GdkRectangle       *expose_area,
 217                                                               gboolean           *page_ready);
 218 static void       draw_loading_text                          (EvView             *view,
 219                                                               GdkRectangle       *page_area,
 220                                                               GdkRectangle       *expose_area);
 221
 222 /*** Callbacks ***/
 223 static void       find_changed_cb                            (EvDocument         *document,
 224                                                               int                 page,
 225                                                               EvView             *view);
 226 static void       job_finished_cb                            (EvPixbufCache      *pixbuf_cache,
 227                                                               EvView             *view);
 228 static void       page_changed_cb                            (EvPageCache        *page_cache,
 229                                                               int                 new_page,
 230                                                               EvView             *view);
 231 static void       on_adjustment_value_changed                (GtkAdjustment      *adjustment,
 232                                                               EvView             *view);
 233
 234 /*** GObject ***/
 235 static void       ev_view_finalize                           (GObject            *object);
 236 static void       ev_view_destroy                            (GtkObject          *object);
 237 static void       ev_view_set_property                       (GObject            *object,
 238                                                               guint               prop_id,
 239                                                               const GValue       *value,
 240                                                               GParamSpec         *pspec);
 241 static void       ev_view_get_property                       (GObject            *object,
 242                                                               guint               prop_id,
 243                                                               GValue             *value,
 244                                                               GParamSpec         *pspec);
 245 static void       ev_view_class_init                         (EvViewClass        *class);
 246 static void       ev_view_init                               (EvView             *view);
 247
 248 /*** Zoom and sizing ***/
 249 static double   zoom_for_size_fit_width                      (int doc_width,
 250                                                               int doc_height,
 251                                                               int target_width,
 252                                                               int target_height,
 253                                                               int vsb_width);
 254 static double   zoom_for_size_fit_height                     (int doc_width,
 255                                                               int doc_height,
 256                                                               int target_width,
 257                                                               int target_height,
 258                                                               int vsb_height);
 259 static double   zoom_for_size_best_fit                       (int doc_width,
 260                                                               int doc_height,
 261                                                               int target_width,
 262                                                               int target_height,
 263                                                               int vsb_width,
 264                                                               int hsb_width);
 265 static void     ev_view_zoom_for_size_presentation           (EvView *view,
 266                                                               int     width,
 267                                                               int     height);
 268 static void     ev_view_zoom_for_size_continuous_and_dual_page (EvView *view,
 269                                                                 int     width,
 270                                                                 int     height,
 271                                                                 int     vsb_width,
 272                                                                 int     hsb_height);
 273 static void     ev_view_zoom_for_size_continuous               (EvView *view,
 274                                                                 int     width,
 275                                                                 int     height,
 276                                                                 int     vsb_width,
 277                                                                 int     hsb_height);
 278 static void     ev_view_zoom_for_size_dual_page                (EvView *view,
 279                                                                 int     width,
 280                                                                 int     height,
 281                                                                 int     vsb_width,
 282                                                                 int     hsb_height);
 283 static void     ev_view_zoom_for_size_single_page              (EvView *view,
 284                                                                 int     width,
 285                                                                 int     height,
 286                                                                 int     vsb_width,
 287                                                                 int     hsb_height);
 288 /*** Cursors ***/
 289 static GdkCursor* ev_view_create_invisible_cursor            (void);
 290 static void       ev_view_set_cursor                         (EvView             *view,
 291                                                               EvViewCursor        new_cursor);
 292
 293 /*** Status messages ***/
 294 static void       ev_view_set_status                         (EvView             *view,
 295                                                               const char         *message);
 296 static void       update_find_status_message                 (EvView             *view,
 297                                                               gboolean            this_page);
 298 static void       ev_view_set_find_status                    (EvView             *view,
 299                                                               const char         *message);
 300 /*** Find ***/
 301 static void       jump_to_find_result                        (EvView             *view);
 302 static void       jump_to_find_page                          (EvView             *view,
 303                                                               EvViewFindDirection direction,
 304                                                               gint                shift);
 305
 306 /*** Selection ***/
 307 static void       compute_selections                         (EvView             *view,
 308                                                               GdkPoint           *start,
 309                                                               GdkPoint           *stop);
 310 static void       clear_selection                            (EvView             *view);
 311 static void       selection_free                             (EvViewSelection    *selection);
 312 static char*      get_selected_text                          (EvView             *ev_view);
 313 static void       ev_view_primary_get_cb                     (GtkClipboard       *clipboard,
 314                                                               GtkSelectionData   *selection_data,
 315                                                               guint               info,
 316                                                               gpointer            data);
 317 static void       ev_view_primary_clear_cb                   (GtkClipboard       *clipboard,
 318                                                               gpointer            data);
 319 static void       ev_view_update_primary_selection           (EvView             *ev_view);
 320
 321 /*** Presentation ***/
 322 static void       ev_view_presentation_transition_start      (EvView             *ev_view);
 323 static void       ev_view_presentation_transition_stop       (EvView             *ev_view);
 324
 325
 326 G_DEFINE_TYPE (EvView, ev_view, GTK_TYPE_WIDGET)
 327
 328 static void
 329 scroll_to_current_page (EvView *view, GtkOrientation orientation)
 330 {
 331         GdkPoint view_point;
 332
 333         if (view->document == NULL) {
 334                 return;
 335         }
 336
 337         doc_point_to_view_point (view, view->current_page, &view->pending_point, &view_point);
 338
 339         if (orientation == GTK_ORIENTATION_VERTICAL) {
 340                 view->pending_point.y = 0;
 341         } else {
 342                 view->pending_point.x = 0;
 343         }
 344
 345         if (orientation == GTK_ORIENTATION_VERTICAL) {
 346                 if (view->continuous) {
 347                         gtk_adjustment_clamp_page (view->vadjustment,
 348                                                    view_point.y - view->spacing / 2,
 349                                                    view_point.y + view->vadjustment->page_size);
 350                 } else {
 351                         gtk_adjustment_set_value (view->vadjustment,
 352                                                   CLAMP (view_point.y,
 353                                                   view->vadjustment->lower,
 354                                                   view->vadjustment->upper -
 355                                                   view->vadjustment->page_size));
 356                 }
 357         } else {
 358                 if (view->dual_page) {
 359                         gtk_adjustment_clamp_page (view->hadjustment,
 360                                                    view_point.x,
 361                                                    view_point.x + view->hadjustment->page_size);
 362                 } else {
 363                         gtk_adjustment_set_value (view->hadjustment,
 364                                                   CLAMP (view_point.x,
 365                                                   view->hadjustment->lower,
 366                                                   view->hadjustment->upper -
 367                                                   view->hadjustment->page_size));
 368                 }
 369         }
 370 }
 371
 372 static void
 373 view_set_adjustment_values (EvView         *view,
 374                             GtkOrientation  orientation)
 375 {
 376         GtkWidget *widget = GTK_WIDGET (view);
 377         GtkAdjustment *adjustment;
 378         int requisition;
 379         int allocation;
 380
 381         double factor;
 382         gint new_value;
 383
 384         if (orientation == GTK_ORIENTATION_HORIZONTAL)  {
 385                 requisition = widget->requisition.width;
 386                 allocation = widget->allocation.width;
 387                 adjustment = view->hadjustment;
 388         } else {
 389                 requisition = widget->requisition.height;
 390                 allocation = widget->allocation.height;
 391                 adjustment = view->vadjustment;
 392         }
 393
 394         if (!adjustment)
 395                 return;
 396
 397         factor = 1.0;
 398         switch (view->pending_scroll) {
 399                 case SCROLL_TO_KEEP_POSITION:
 400                 case SCROLL_TO_FIND_LOCATION:
 401                         factor = (adjustment->value) / adjustment->upper;
 402                         break;
 403                 case SCROLL_TO_PAGE_POSITION:
 404                         break;
 405                 case SCROLL_TO_CENTER:
 406                         factor = (adjustment->value + adjustment->page_size * 0.5) / adjustment->upper;
 407                         break;
 408         }
 409
 410         adjustment->page_size = allocation;
 411         adjustment->step_increment = allocation * 0.1;
 412         adjustment->page_increment = allocation * 0.9;
 413         adjustment->lower = 0;
 414         adjustment->upper = MAX (allocation, requisition);
 415
 416         /*
 417          * We add 0.5 to the values before to average out our rounding errors.
 418          */
 419         switch (view->pending_scroll) {
 420                 case SCROLL_TO_KEEP_POSITION:
 421                 case SCROLL_TO_FIND_LOCATION:
 422                         new_value = CLAMP (adjustment->upper * factor + 0.5, 0, adjustment->upper - adjustment->page_size);
 423                         gtk_adjustment_set_value (adjustment, (int)new_value);
 424                         break;
 425                 case SCROLL_TO_PAGE_POSITION:
 426                         scroll_to_current_page (view, orientation);
 427                         break;
 428                 case SCROLL_TO_CENTER:
 429                         new_value = CLAMP (adjustment->upper * factor - adjustment->page_size * 0.5 + 0.5,
 430                                            0, adjustment->upper - adjustment->page_size);
 431                         gtk_adjustment_set_value (adjustment, (int)new_value);
 432                         break;
 433         }
 434
 435         gtk_adjustment_changed (adjustment);
 436 }
 437
 438 static void
 439 view_update_range_and_current_page (EvView *view)
 440 {
 441         gint current_page;
 442         gint best_current_page = -1;
 443
 444         /* Presentation trumps all other modes */
 445         if (view->presentation) {
 446                 view->start_page = view->current_page;
 447                 view->end_page = view->current_page;
 448         } else if (view->continuous) {
 449                 GdkRectangle current_area, unused, page_area;
 450                 GtkBorder border;
 451                 gboolean found = FALSE;
 452                 gint area_max = -1, area;
 453                 int i;
 454
 455                 if (!(view->vadjustment && view->hadjustment))
 456                         return;
 457
 458                 current_area.x = view->hadjustment->value;
 459                 current_area.width = view->hadjustment->upper;
 460                 current_area.y = view->vadjustment->value;
 461                 current_area.height = view->vadjustment->page_size;
 462
 463                 for (i = 0; i < ev_page_cache_get_n_pages (view->page_cache); i++) {
 464
 465                         get_page_extents (view, i, &page_area, &border);
 466
 467                         if (gdk_rectangle_intersect (&current_area, &page_area, &unused)) {
 468                                 area = unused.width * unused.height;
 469
 470                                 if (!found) {
 471                                         area_max = area;
 472                                         view->start_page = i;
 473                                         found = TRUE;
 474                                         best_current_page = i;
 475                                 }
 476                                 if (area > area_max) {
 477                                         best_current_page = (area == area_max) ? MIN (i, best_current_page) : i;
 478                                         area_max = area;
 479                                 }
 480
 481                                 view->end_page = i;
 482                         } else if (found) {
 483                                 break;
 484                         }
 485                 }
 486
 487         } else if (view->dual_page) {
 488                 if (view->current_page % 2 == ev_page_cache_get_dual_even_left (view->page_cache)) {
 489                         view->start_page = view->current_page;
 490                         if (view->current_page + 1 < ev_page_cache_get_n_pages (view->page_cache))
 491                                 view->end_page = view->start_page + 1;
 492                         else
 493                                 view->end_page = view->start_page;
 494                 } else {
 495                         if (view->current_page < 1)
 496                                 view->start_page = view->current_page;
 497                         else
 498                                 view->start_page = view->current_page - 1;
 499                         view->end_page = view->current_page;
 500                 }
 501         } else {
 502                 view->start_page = view->current_page;
 503                 view->end_page = view->current_page;
 504         }
 505
 506         best_current_page = MAX (best_current_page, view->start_page);
 507         current_page = ev_page_cache_get_current_page (view->page_cache);
 508
 509         if ((current_page != best_current_page) && (view->pending_scroll == SCROLL_TO_KEEP_POSITION)) {
 510                 view->current_page = best_current_page;
 511                 ev_page_cache_set_current_page (view->page_cache, best_current_page);
 512         }
 513
 514         ev_pixbuf_cache_set_page_range (view->pixbuf_cache,
 515                                         view->start_page,
 516                                         view->end_page,
 517                                         view->rotation,
 518                                         view->scale,
 519                                         view->selection_info.selections);
 520 }
 521
 522 static void
 523 set_scroll_adjustment (EvView *view,
 524                        GtkOrientation  orientation,
 525                        GtkAdjustment  *adjustment)
 526 {
 527         GtkAdjustment **to_set;
 528
 529         if (orientation == GTK_ORIENTATION_HORIZONTAL)
 530                 to_set = &view->hadjustment;
 531         else
 532                 to_set = &view->vadjustment;
 533
 534         if (*to_set != adjustment) {
 535                 if (*to_set) {
 536                         g_signal_handlers_disconnect_by_func (*to_set,
 537                                                               (gpointer) on_adjustment_value_changed,
 538                                                               view);
 539                         g_object_unref (*to_set);
 540                 }
 541
 542                 *to_set = adjustment;
 543                 view_set_adjustment_values (view, orientation);
 544
 545                 if (*to_set) {
 546                         g_object_ref (*to_set);
 547                         g_signal_connect (*to_set, "value_changed",
 548                                           G_CALLBACK (on_adjustment_value_changed), view);
 549                 }
 550         }
 551 }
 552
 553 static void
 554 ev_view_set_scroll_adjustments (EvView *view,
 555                                 GtkAdjustment  *hadjustment,
 556                                 GtkAdjustment  *vadjustment)
 557 {
 558         set_scroll_adjustment (view, GTK_ORIENTATION_HORIZONTAL, hadjustment);
 559         set_scroll_adjustment (view, GTK_ORIENTATION_VERTICAL, vadjustment);
 560
 561         on_adjustment_value_changed (NULL, view);
 562 }
 563
 564 static void
 565 add_scroll_binding_keypad (GtkBindingSet  *binding_set,
 566                            guint           keyval,
 567                            GdkModifierType modifiers,
 568                            EvScrollType    scroll,
 569                            gboolean        horizontal)
 570 {
 571   guint keypad_keyval = keyval - GDK_Left + GDK_KP_Left;
 572
 573   gtk_binding_entry_add_signal (binding_set, keyval, modifiers,
 574                                 "binding_activated", 2,
 575                                 EV_TYPE_SCROLL_TYPE, scroll,
 576                                 G_TYPE_BOOLEAN, horizontal);
 577   gtk_binding_entry_add_signal (binding_set, keypad_keyval, modifiers,
 578                                 "binding_activated", 2,
 579                                 EV_TYPE_SCROLL_TYPE, scroll,
 580                                 G_TYPE_BOOLEAN, horizontal);
 581 }
 582
 583 void
 584 ev_view_scroll (EvView        *view,
 585                 EvScrollType   scroll,
 586                 gboolean horizontal)
 587 {
 588         GtkAdjustment *adjustment;
 589         double value, increment;
 590         gboolean first_page = FALSE;
 591         gboolean last_page = FALSE;
 592
 593         view->jump_to_find_result = FALSE;
 594
 595         if (view->presentation || view->sizing_mode == EV_SIZING_BEST_FIT) {
 596                 switch (scroll) {
 597                         case EV_SCROLL_PAGE_BACKWARD:
 598                         case EV_SCROLL_STEP_BACKWARD:
 599                                 ev_view_previous_page (view);
 600                                 break;
 601                         case EV_SCROLL_PAGE_FORWARD:
 602                         case EV_SCROLL_STEP_FORWARD:
 603                                 ev_view_next_page (view);
 604                                 break;
 605                         default:
 606                                 break;
 607                 }
 608                 return;
 609         }
 610
 611         /* Assign values for increment and vertical adjustment */
 612         adjustment = horizontal ? view->hadjustment : view->vadjustment;
 613         increment = adjustment->page_size * 0.75;
 614         value = adjustment->value;
 615
 616         /* Assign boolean for first and last page */
 617         if (view->current_page == 0)
 618                 first_page = TRUE;
 619         if (view->current_page == ev_page_cache_get_n_pages (view->page_cache) - 1)
 620                 last_page = TRUE;
 621
 622         switch (scroll) {
 623                 case EV_SCROLL_PAGE_BACKWARD:
 624                         /* Do not jump backwards if at the first page */
 625                         if (value == (adjustment->lower) && first_page) {
 626                                 /* Do nothing */
 627                                 /* At the top of a page, assign the upper bound limit of previous page */
 628                         } else if (value == (adjustment->lower)) {
 629                                 value = adjustment->upper - adjustment->page_size;
 630                                 ev_view_previous_page (view);
 631                                 /* Jump to the top */
 632                         } else {
 633                                 value = MAX (value - increment, adjustment->lower);
 634                         }
 635                         break;
 636                 case EV_SCROLL_PAGE_FORWARD:
 637                         /* Do not jump forward if at the last page */
 638                         if (value == (adjustment->upper - adjustment->page_size) && last_page) {
 639                                 /* Do nothing */
 640                         /* At the bottom of a page, assign the lower bound limit of next page */
 641                         } else if (value == (adjustment->upper - adjustment->page_size)) {
 642                                 value = 0;
 643                                 ev_view_next_page (view);
 644                         /* Jump to the bottom */
 645                         } else {
 646                                 value = MIN (value + increment, adjustment->upper - adjustment->page_size);
 647                         }
 648                         break;
 649                 case EV_SCROLL_STEP_BACKWARD:
 650                         value -= adjustment->step_increment;
 651                         break;
 652                 case EV_SCROLL_STEP_FORWARD:
 653                         value += adjustment->step_increment;
 654                         break;
 655                 case EV_SCROLL_STEP_DOWN:
 656                         value -= adjustment->step_increment / 10;
 657                         break;
 658                 case EV_SCROLL_STEP_UP:
 659                         value += adjustment->step_increment / 10;
 660                         break;
 661                 default:
 662                         break;
 663         }
 664
 665         value = CLAMP (value, adjustment->lower,
 666                        adjustment->upper - adjustment->page_size);
 667
 668         gtk_adjustment_set_value (adjustment, value);
 669 }
 670
 671 #define MARGIN 5
 672
 673 static void
 674 ensure_rectangle_is_visible (EvView *view, GdkRectangle *rect)
 675 {
 676         GtkWidget *widget = GTK_WIDGET (view);
 677         GtkAdjustment *adjustment;
 678         int value;
 679
 680         view->pending_scroll = SCROLL_TO_FIND_LOCATION;
 681
 682         adjustment = view->vadjustment;
 683
 684         if (rect->y < adjustment->value) {
 685                 value = MAX (adjustment->lower, rect->y - MARGIN);
 686                 gtk_adjustment_set_value (view->vadjustment, value);
 687         } else if (rect->y + rect->height >
 688                    adjustment->value + widget->allocation.height) {
 689                 value = MIN (adjustment->upper, rect->y + rect->height -
 690                              widget->allocation.height + MARGIN);
 691                 gtk_adjustment_set_value (view->vadjustment, value);
 692         }
 693
 694         adjustment = view->hadjustment;
 695
 696         if (rect->x < adjustment->value) {
 697                 value = MAX (adjustment->lower, rect->x - MARGIN);
 698                 gtk_adjustment_set_value (view->hadjustment, value);
 699         } else if (rect->x + rect->height >
 700                    adjustment->value + widget->allocation.width) {
 701                 value = MIN (adjustment->upper, rect->x + rect->width -
 702                              widget->allocation.width + MARGIN);
 703                 gtk_adjustment_set_value (view->hadjustment, value);
 704         }
 705
 706         gtk_widget_queue_resize (GTK_WIDGET (view));
 707 }
 708
 709 /*** Geometry computations ***/
 710
 711 static void
 712 compute_border (EvView *view, int width, int height, GtkBorder *border)
 713 {
 714         if (view->presentation) {
 715                 border->left = 0;
 716                 border->right = 0;
 717                 border->top = 0;
 718                 border->bottom = 0;
 719         } else {
 720                 ev_document_misc_get_page_border_size (width, height, border);
 721         }
 722 }
 723
 724 static void
 725 get_page_y_offset (EvView *view, int page, double zoom, int *y_offset)
 726 {
 727         int max_width, offset;
 728         GtkBorder border;
 729
 730         g_return_if_fail (y_offset != NULL);
 731
 732         ev_page_cache_get_max_width (view->page_cache, view->rotation, zoom, &max_width);
 733
 734         compute_border (view, max_width, max_width, &border);
 735
 736         if (view->dual_page) {
 737                 ev_page_cache_get_height_to_page (view->page_cache, page,
 738                                                   view->rotation, zoom, NULL, &offset);
 739                 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);
 740         } else {
 741                 ev_page_cache_get_height_to_page (view->page_cache, page,
 742                                                   view->rotation, zoom, &offset, NULL);
 743                 offset += (page + 1) * view->spacing + page * (border.top + border.bottom);
 744         }
 745
 746         *y_offset = offset;
 747         return;
 748 }
 749
 750 static gboolean
 751 get_page_extents (EvView       *view,
 752                   gint          page,
 753                   GdkRectangle *page_area,
 754                   GtkBorder    *border)
 755 {
 756         GtkWidget *widget;
 757         int width, height;
 758
 759         widget = GTK_WIDGET (view);
 760
 761         /* Get the size of the page */
 762         ev_page_cache_get_size (view->page_cache, page,
 763                                 view->rotation,
 764                                 view->scale,
 765                                 &width, &height);
 766         compute_border (view, width, height, border);
 767         page_area->width = width + border->left + border->right;
 768         page_area->height = height + border->top + border->bottom;
 769
 770         if (view->presentation) {
 771                 page_area->x = (MAX (0, widget->allocation.width - width))/2;
 772                 page_area->y = (MAX (0, widget->allocation.height - height))/2;
 773         } else if (view->continuous) {
 774                 gint max_width;
 775                 gint x, y;
 776
 777                 ev_page_cache_get_max_width (view->page_cache, view->rotation,
 778                                              view->scale, &max_width);
 779                 max_width = max_width + border->left + border->right;
 780                 /* Get the location of the bounding box */
 781                 if (view->dual_page) {
 782                         x = view->spacing + ((page % 2 == ev_page_cache_get_dual_even_left (view->page_cache)) ? 0 : 1) * (max_width + view->spacing);
 783                         x = x + MAX (0, widget->allocation.width - (max_width * 2 + view->spacing * 3)) / 2;
 784                         if (page % 2 == ev_page_cache_get_dual_even_left (view->page_cache))
 785                                 x = x + (max_width - width - border->left - border->right);
 786                 } else {
 787                         x = view->spacing;
 788                         x = x + MAX (0, widget->allocation.width - (width + view->spacing * 2)) / 2;
 789                 }
 790
 791                 get_page_y_offset (view, page, view->scale, &y);
 792
 793                 page_area->x = x;
 794                 page_area->y = y;
 795         } else {
 796                 gint x, y;
 797                 if (view->dual_page) {
 798                         gint width_2, height_2;
 799                         gint max_width = width;
 800                         gint max_height = height;
 801                         GtkBorder overall_border;
 802                         gint other_page;
 803
 804                         other_page = (page % 2 == ev_page_cache_get_dual_even_left (view->page_cache)) ? page + 1: page - 1;
 805
 806                         /* First, we get the bounding box of the two pages */
 807                         if (other_page < ev_page_cache_get_n_pages (view->page_cache)
 808                             && (0 <= other_page)) {
 809                                 ev_page_cache_get_size (view->page_cache,
 810                                                         other_page,
 811                                                         view->rotation,
 812                                                         view->scale,
 813                                                         &width_2, &height_2);
 814                                 if (width_2 > width)
 815                                         max_width = width_2;
 816                                 if (height_2 > height)
 817                                         max_height = height_2;
 818                         }
 819                         compute_border (view, max_width, max_height, &overall_border);
 820
 821                         /* Find the offsets */
 822                         x = view->spacing;
 823                         y = view->spacing;
 824
 825                         /* Adjust for being the left or right page */
 826                         if (page % 2 == ev_page_cache_get_dual_even_left (view->page_cache))
 827                                 x = x + max_width - width;
 828                         else
 829                                 x = x + (max_width + overall_border.left + overall_border.right) + view->spacing;
 830
 831                         y = y + (max_height - height)/2;
 832
 833                         /* Adjust for extra allocation */
 834                         x = x + MAX (0, widget->allocation.width -
 835                                      ((max_width + overall_border.left + overall_border.right) * 2 + view->spacing * 3))/2;
 836                         y = y + MAX (0, widget->allocation.height - (height + view->spacing * 2))/2;
 837                 } else {
 838                         x = view->spacing;
 839                         y = view->spacing;
 840
 841                         /* Adjust for extra allocation */
 842                         x = x + MAX (0, widget->allocation.width - (width + border->left + border->right + view->spacing * 2))/2;
 843                         y = y + MAX (0, widget->allocation.height - (height + border->top + border->bottom +  view->spacing * 2))/2;
 844                 }
 845
 846                 page_area->x = x;
 847                 page_area->y = y;
 848         }
 849
 850         return TRUE;
 851 }
 852
 853 static void
 854 view_point_to_doc_point (EvView *view,
 855                          GdkPoint *view_point,
 856                          GdkRectangle *page_area,
 857                          double  *doc_point_x,
 858                          double  *doc_point_y)
 859 {
 860         *doc_point_x = (double) (view_point->x - page_area->x) / view->scale;
 861         *doc_point_y = (double) (view_point->y - page_area->y) / view->scale;
 862 }
 863
 864 static void
 865 view_rect_to_doc_rect (EvView *view,
 866                        GdkRectangle *view_rect,
 867                        GdkRectangle *page_area,
 868                        EvRectangle  *doc_rect)
 869 {
 870         doc_rect->x1 = (double) (view_rect->x - page_area->x) / view->scale;
 871         doc_rect->y1 = (double) (view_rect->y - page_area->y) / view->scale;
 872         doc_rect->x2 = doc_rect->x1 + (double) view_rect->width / view->scale;
 873         doc_rect->y2 = doc_rect->y1 + (double) view_rect->height / view->scale;
 874 }
 875
 876 static gboolean
 877 doc_point_to_view_point (EvView       *view,
 878                          int           page,
 879                          EvPoint      *doc_point,
 880                          GdkPoint     *view_point)
 881 {
 882         GdkRectangle page_area;
 883         GtkBorder border;
 884         double x, y, view_x, view_y;
 885         int width, height;
 886
 887         ev_page_cache_get_size (view->page_cache, page,
 888                                 view->rotation,
 889                                 1.0,
 890                                 &width, &height);
 891
 892         if (view->rotation == 0) {
 893                 x = doc_point->x;
 894                 y = doc_point->y;
 895         } else if (view->rotation == 90) {
 896                 x = width - doc_point->y;
 897                 y = doc_point->x;
 898         } else if (view->rotation == 180) {
 899                 x = width - doc_point->x;
 900                 y = height - doc_point->y;
 901         } else if (view->rotation == 270) {
 902                 x = doc_point->y;
 903                 y = height - doc_point->x;
 904         } else {
 905                 g_assert_not_reached ();
 906         }
 907
 908         get_page_extents (view, page, &page_area, &border);
 909
 910         view_x = x * view->scale;
 911         view_y = y * view->scale;
 912         view_point->x = view_x + page_area.x;
 913         view_point->y = view_y + page_area.y;
 914
 915         return (view_x > 0 && view_x <= page_area.width &&
 916                 view_y > 0 && view_y <= page_area.height);
 917 }
 918
 919 static void
 920 doc_rect_to_view_rect (EvView       *view,
 921                        int           page,
 922                        EvRectangle  *doc_rect,
 923                        GdkRectangle *view_rect)
 924 {
 925         GdkRectangle page_area;
 926         GtkBorder border;
 927         double x, y, w, h;
 928         int width, height;
 929
 930         ev_page_cache_get_size (view->page_cache, page,
 931                                 view->rotation,
 932                                 1.0,
 933                                 &width, &height);
 934
 935         if (view->rotation == 0) {
 936                 x = doc_rect->x1;
 937                 y = doc_rect->y1;
 938                 w = doc_rect->x2 - doc_rect->x1;
 939                 h = doc_rect->y2 - doc_rect->y1;
 940         } else if (view->rotation == 90) {
 941                 x = width - doc_rect->y2;
 942                 y = doc_rect->x1;
 943                 w = doc_rect->y2 - doc_rect->y1;
 944                 h = doc_rect->x2 - doc_rect->x1;
 945         } else if (view->rotation == 180) {
 946                 x = width - doc_rect->x2;
 947                 y = height - doc_rect->y2;
 948                 w = doc_rect->x2 - doc_rect->x1;
 949                 h = doc_rect->y2 - doc_rect->y1;
 950         } else if (view->rotation == 270) {
 951                 x = doc_rect->y1;
 952                 y = height - doc_rect->x2;
 953                 w = doc_rect->y2 - doc_rect->y1;
 954                 h = doc_rect->x2 - doc_rect->x1;
 955         } else {
 956                 g_assert_not_reached ();
 957         }
 958
 959         get_page_extents (view, page, &page_area, &border);
 960
 961         view_rect->x = x * view->scale + page_area.x;
 962         view_rect->y = y * view->scale + page_area.y;
 963         view_rect->width = w * view->scale;
 964         view_rect->height = h * view->scale;
 965 }
 966
 967 static void
 968 find_page_at_location (EvView  *view,
 969                        gdouble  x,
 970                        gdouble  y,
 971                        gint    *page,
 972                        gint    *x_offset,
 973                        gint    *y_offset)
 974 {
 975         int i;
 976
 977         if (view->document == NULL)
 978                 return;
 979
 980         g_assert (page);
 981         g_assert (x_offset);
 982         g_assert (y_offset);
 983
 984         for (i = view->start_page; i <= view->end_page; i++) {
 985                 GdkRectangle page_area;
 986                 GtkBorder border;
 987
 988                 if (! get_page_extents (view, i, &page_area, &border))
 989                         continue;
 990
 991                 if ((x >= page_area.x + border.left) &&
 992                     (x < page_area.x + page_area.width - border.right) &&
 993                     (y >= page_area.y + border.top) &&
 994                     (y < page_area.y + page_area.height - border.bottom)) {
 995                         *page = i;
 996                         *x_offset = x - (page_area.x + border.left);
 997                         *y_offset = y - (page_area.y + border.top);
 998                         return;
 999                 }
1000         }
1001
1002         *page = -1;
1003 }
1004
1005 static gboolean
1006 location_in_text (EvView  *view,
1007                   gdouble  x,
1008                   gdouble  y)
1009 {
1010         GdkRegion *region;
1011         gint page = -1;
1012         gint x_offset = 0, y_offset = 0;
1013
1014         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1015
1016         if (page == -1)
1017                 return FALSE;
1018
1019         region = ev_pixbuf_cache_get_text_mapping (view->pixbuf_cache, page);
1020
1021         if (region)
1022                 return gdk_region_point_in (region, x_offset / view->scale, y_offset / view->scale);
1023         else
1024                 return FALSE;
1025 }
1026
1027 static int
1028 ev_view_get_width (EvView *view)
1029 {
1030         return GTK_WIDGET (view)->allocation.width;
1031 }
1032
1033 static int
1034 ev_view_get_height (EvView *view)
1035 {
1036         return GTK_WIDGET (view)->allocation.height;
1037 }
1038
1039 static gboolean
1040 location_in_selected_text (EvView  *view,
1041                            gdouble  x,
1042                            gdouble  y)
1043 {
1044         gint page = -1;
1045         gint x_offset = 0, y_offset = 0;
1046         EvViewSelection *selection;
1047         GList *l = NULL;
1048
1049         for (l = view->selection_info.selections; l != NULL; l = l->next) {
1050                 selection = (EvViewSelection *)l->data;
1051
1052                 find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1053
1054                 if (page != selection->page)
1055                         continue;
1056
1057                 if (selection->covered_region &&
1058                     gdk_region_point_in (selection->covered_region, x_offset, y_offset))
1059                         return TRUE;
1060         }
1061
1062         return FALSE;
1063 }
1064
1065 static gboolean
1066 get_doc_point_from_offset (EvView *view,
1067                            gint    page,
1068                            gint    x_offset,
1069                            gint    y_offset,
1070                            gint   *x_new,
1071                            gint   *y_new)
1072 {
1073         int width, height;
1074         double x, y;
1075
1076         ev_page_cache_get_size (view->page_cache, page,
1077                                 view->rotation,
1078                                 1.0,
1079                                 &width, &height);
1080
1081         x_offset = x_offset / view->scale;
1082         y_offset = y_offset / view->scale;
1083
1084         if (view->rotation == 0) {
1085                 x = x_offset;
1086                 y = y_offset;
1087         } else if (view->rotation == 90) {
1088                 x = y_offset;
1089                 y = width - x_offset;
1090         } else if (view->rotation == 180) {
1091                 x = width - x_offset;
1092                 y = height - y_offset;
1093         } else if (view->rotation == 270) {
1094                 x = height - y_offset;
1095                 y = x_offset;
1096         } else {
1097                 g_assert_not_reached ();
1098         }
1099
1100         *x_new = x;
1101         *y_new = y;
1102
1103         return TRUE;
1104 }
1105
1106 /*** Hyperref ***/
1107 static EvLink *
1108 ev_view_get_link_at_location (EvView  *view,
1109                               gdouble  x,
1110                               gdouble  y)
1111 {
1112         gint page = -1;
1113         gint x_offset = 0, y_offset = 0;
1114         gint x_new = 0, y_new = 0;
1115         GList *link_mapping;
1116
1117         x += view->scroll_x;
1118         y += view->scroll_y;
1119
1120         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1121
1122         if (page == -1)
1123                 return NULL;
1124
1125
1126         if (get_doc_point_from_offset (view, page, x_offset,
1127                                        y_offset, &x_new, &y_new) == FALSE)
1128                 return NULL;
1129
1130         link_mapping = ev_pixbuf_cache_get_link_mapping (view->pixbuf_cache, page);
1131
1132         if (link_mapping)
1133                 return ev_link_mapping_find (link_mapping, x_new, y_new);
1134         else
1135                 return NULL;
1136 }
1137
1138 static void
1139 goto_fitr_dest (EvView *view, EvLinkDest *dest)
1140 {
1141         EvPoint doc_point;
1142         double zoom;
1143
1144         zoom = zoom_for_size_best_fit (ev_link_dest_get_right (dest) - ev_link_dest_get_left (dest),
1145                                        ev_link_dest_get_bottom (dest) - ev_link_dest_get_top (dest),
1146                                        ev_view_get_width (view),
1147                                        ev_view_get_height (view), 0, 0);
1148
1149         ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1150         ev_view_set_zoom (view, zoom, FALSE);
1151
1152         doc_point.x = ev_link_dest_get_left (dest);
1153         doc_point.y = ev_link_dest_get_top (dest);
1154
1155         view->current_page = ev_link_dest_get_page (dest);
1156         view->pending_point = doc_point;
1157         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1158
1159         gtk_widget_queue_resize (GTK_WIDGET (view));
1160 }
1161
1162 static void
1163 goto_fitv_dest (EvView *view, EvLinkDest *dest)
1164 {
1165         EvPoint doc_point;
1166         int doc_width, doc_height, page;
1167         double zoom;
1168
1169         page = ev_link_dest_get_page (dest);
1170         ev_page_cache_get_size (view->page_cache, page, 0, 1.0, &doc_width, &doc_height);
1171
1172         doc_point.x = ev_link_dest_get_left (dest);
1173         doc_point.y = 0;
1174
1175         zoom = zoom_for_size_fit_height (doc_width - doc_point.x , doc_height,
1176                                          ev_view_get_width (view),
1177                                          ev_view_get_height (view), 0);
1178
1179         ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1180         ev_view_set_zoom (view, zoom, FALSE);
1181
1182         view->current_page = page;
1183         view->pending_point = doc_point;
1184         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1185
1186         gtk_widget_queue_resize (GTK_WIDGET (view));
1187 }
1188
1189 static void
1190 goto_fith_dest (EvView *view, EvLinkDest *dest)
1191 {
1192         EvPoint doc_point;
1193         int doc_width, doc_height, page;
1194         double zoom;
1195
1196         page = ev_link_dest_get_page (dest);
1197         ev_page_cache_get_size (view->page_cache, page, 0, 1.0, &doc_width, &doc_height);
1198
1199         doc_point.x = 0;
1200         doc_point.y = ev_link_dest_get_top (dest);
1201
1202         zoom = zoom_for_size_fit_width (doc_width, ev_link_dest_get_top (dest),
1203                                         ev_view_get_width (view),
1204                                         ev_view_get_height (view), 0);
1205
1206         ev_view_set_sizing_mode (view, EV_SIZING_FIT_WIDTH);
1207         ev_view_set_zoom (view, zoom, FALSE);
1208
1209         view->current_page = page;
1210         view->pending_point = doc_point;
1211         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1212
1213         gtk_widget_queue_resize (GTK_WIDGET (view));
1214 }
1215
1216 static void
1217 goto_fit_dest (EvView *view, EvLinkDest *dest)
1218 {
1219         double zoom;
1220         int doc_width, doc_height;
1221         int page;
1222
1223         page = ev_link_dest_get_page (dest);
1224         ev_page_cache_get_size (view->page_cache, page, 0, 1.0, &doc_width, &doc_height);
1225
1226         zoom = zoom_for_size_best_fit (doc_width, doc_height, ev_view_get_width (view),
1227                                        ev_view_get_height (view), 0, 0);
1228
1229         ev_view_set_sizing_mode (view, EV_SIZING_BEST_FIT);
1230         ev_view_set_zoom (view, zoom, FALSE);
1231
1232         view->current_page = page;
1233         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1234
1235         gtk_widget_queue_resize (GTK_WIDGET (view));
1236 }
1237
1238 static void
1239 goto_xyz_dest (EvView *view, EvLinkDest *dest)
1240 {
1241         EvPoint doc_point;
1242         gint page;
1243         double zoom;
1244
1245         zoom = ev_link_dest_get_zoom (dest);
1246         page = ev_link_dest_get_page (dest);
1247
1248         if (zoom > 1) {
1249                 ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1250                 ev_view_set_zoom (view, zoom, FALSE);
1251         }
1252
1253         doc_point.x = ev_link_dest_get_left (dest);
1254         doc_point.y = ev_link_dest_get_top (dest);
1255
1256         view->current_page = page;
1257         view->pending_point = doc_point;
1258         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1259
1260         gtk_widget_queue_resize (GTK_WIDGET (view));
1261 }
1262
1263 static void
1264 goto_dest (EvView *view, EvLinkDest *dest)
1265 {
1266         EvLinkDestType type;
1267         int page, n_pages, current_page;
1268
1269         page = ev_link_dest_get_page (dest);
1270         n_pages = ev_page_cache_get_n_pages (view->page_cache);
1271
1272         if (page < 0 || page >= n_pages)
1273                 return;
1274
1275         current_page = view->current_page;
1276
1277         type = ev_link_dest_get_dest_type (dest);
1278
1279         switch (type) {
1280                 case EV_LINK_DEST_TYPE_PAGE:
1281                         ev_page_cache_set_current_page (view->page_cache, page);
1282                         break;
1283                 case EV_LINK_DEST_TYPE_FIT:
1284                         goto_fit_dest (view, dest);
1285                         break;
1286                 case EV_LINK_DEST_TYPE_FITH:
1287                         goto_fith_dest (view, dest);
1288                         break;
1289                 case EV_LINK_DEST_TYPE_FITV:
1290                         goto_fitv_dest (view, dest);
1291                         break;
1292                 case EV_LINK_DEST_TYPE_FITR:
1293                         goto_fitr_dest (view, dest);
1294                         break;
1295                 case EV_LINK_DEST_TYPE_XYZ:
1296                         goto_xyz_dest (view, dest);
1297                         break;
1298                 case EV_LINK_DEST_TYPE_PAGE_LABEL:
1299                         ev_page_cache_set_page_label (view->page_cache, ev_link_dest_get_page_label (dest));
1300                         break;
1301                 default:
1302                         g_assert_not_reached ();
1303         }
1304
1305         if (current_page != view->current_page)
1306                 ev_page_cache_set_current_page (view->page_cache,
1307                                                 view->current_page);
1308 }
1309
1310 void
1311 ev_view_goto_dest (EvView *view, EvLinkDest *dest)
1312 {
1313         EvLinkDestType type;
1314
1315         type = ev_link_dest_get_dest_type (dest);
1316
1317         if (type == EV_LINK_DEST_TYPE_NAMED) {
1318                 EvLinkDest  *dest2;
1319                 const gchar *named_dest;
1320
1321                 named_dest = ev_link_dest_get_named_dest (dest);
1322                 dest2 = ev_document_links_find_link_dest (EV_DOCUMENT_LINKS (view->document),
1323                                                           named_dest);
1324                 if (dest2) {
1325                         goto_dest (view, dest2);
1326                         g_object_unref (dest2);
1327                 }
1328
1329                 return;
1330         }
1331
1332         goto_dest (view, dest);
1333 }
1334
1335 void
1336 ev_view_handle_link (EvView *view, EvLink *link)
1337 {
1338         EvLinkAction    *action = NULL;
1339         EvLinkActionType type;
1340
1341         action = ev_link_get_action (link);
1342         if (!action)
1343                 return;
1344
1345         type = ev_link_action_get_action_type (action);
1346
1347         switch (type) {
1348                 case EV_LINK_ACTION_TYPE_GOTO_DEST: {
1349                         EvLinkDest *dest;
1350
1351                         dest = ev_link_action_get_dest (action);
1352                         ev_view_goto_dest (view, dest);
1353                 }
1354                         break;
1355                 case EV_LINK_ACTION_TYPE_GOTO_REMOTE:
1356                 case EV_LINK_ACTION_TYPE_EXTERNAL_URI:
1357                 case EV_LINK_ACTION_TYPE_LAUNCH:
1358                 case EV_LINK_ACTION_TYPE_NAMED:
1359                         g_signal_emit (view, signals[SIGNAL_EXTERNAL_LINK], 0, action);
1360                         break;
1361         }
1362 }
1363
1364 static gchar *
1365 page_label_from_dest (EvView *view, EvLinkDest *dest)
1366 {
1367         EvLinkDestType type;
1368         gchar *msg = NULL;
1369
1370         type = ev_link_dest_get_dest_type (dest);
1371
1372         switch (type) {
1373                 case EV_LINK_DEST_TYPE_NAMED: {
1374                         EvLinkDest  *dest2;
1375                         const gchar *named_dest;
1376
1377                         named_dest = ev_link_dest_get_named_dest (dest);
1378                         dest2 = ev_document_links_find_link_dest (EV_DOCUMENT_LINKS (view->document),
1379                                                                   named_dest);
1380                         if (dest2) {
1381                                 msg = ev_page_cache_get_page_label (view->page_cache,
1382                                                                     ev_link_dest_get_page (dest2));
1383                                 g_object_unref (dest2);
1384                         }
1385                 }
1386
1387                         break;
1388                 default:
1389                         msg = ev_page_cache_get_page_label (view->page_cache,
1390                                                             ev_link_dest_get_page (dest));
1391         }
1392
1393         return msg;
1394 }
1395
1396 static char *
1397 tip_from_action_named (EvLinkAction *action)
1398 {
1399         const gchar *name = ev_link_action_get_name (action);
1400
1401         if (g_ascii_strcasecmp (name, "FirstPage") == 0) {
1402                 return g_strdup (_("Go to first page"));
1403         } else if (g_ascii_strcasecmp (name, "PrevPage") == 0) {
1404                 return g_strdup (_("Go to previous page"));
1405         } else if (g_ascii_strcasecmp (name, "NextPage") == 0) {
1406                 return g_strdup (_("Go to next page"));
1407         } else if (g_ascii_strcasecmp (name, "LastPage") == 0) {
1408                 return g_strdup (_("Go to last page"));
1409         } else if (g_ascii_strcasecmp (name, "GoToPage") == 0) {
1410                 return g_strdup (_("Go to page"));
1411         } else if (g_ascii_strcasecmp (name, "Find") == 0) {
1412                 return g_strdup (_("Find"));
1413         }
1414
1415         return NULL;
1416 }
1417
1418 static char *
1419 tip_from_link (EvView *view, EvLink *link)
1420 {
1421         EvLinkAction *action;
1422         EvLinkActionType type;
1423         char *msg = NULL;
1424         char *page_label;
1425         const char *title;
1426
1427         action = ev_link_get_action (link);
1428         title = ev_link_get_title (link);
1429
1430         if (!action)
1431                 return title ? g_strdup (title) : NULL;
1432
1433         type = ev_link_action_get_action_type (action);
1434
1435         switch (type) {
1436                 case EV_LINK_ACTION_TYPE_GOTO_DEST:
1437                         page_label = page_label_from_dest (view,
1438                                                            ev_link_action_get_dest (action));
1439                         msg = g_strdup_printf (_("Go to page %s"), page_label);
1440                         g_free (page_label);
1441                         break;
1442                 case EV_LINK_ACTION_TYPE_GOTO_REMOTE:
1443                         if (title) {
1444                                 msg = g_strdup_printf (_("Go to %s on file “%s”"), title,
1445                                                        ev_link_action_get_filename (action));
1446                         } else {
1447                                 msg = g_strdup_printf (_("Go to file “%s”"),
1448                                                        ev_link_action_get_filename (action));
1449                         }
1450
1451                         break;
1452                 case EV_LINK_ACTION_TYPE_EXTERNAL_URI:
1453                         msg = g_strdup (ev_link_action_get_uri (action));
1454                         break;
1455                 case EV_LINK_ACTION_TYPE_LAUNCH:
1456                         msg = g_strdup_printf (_("Launch %s"),
1457                                                ev_link_action_get_filename (action));
1458                         break;
1459                 case EV_LINK_ACTION_TYPE_NAMED:
1460                         msg = tip_from_action_named (action);
1461                         break;
1462                 default:
1463                         if (title)
1464                                 msg = g_strdup (title);
1465                         break;
1466         }
1467
1468         return msg;
1469 }
1470
1471 static void
1472 handle_link_over_xy (EvView *view, gint x, gint y)
1473 {
1474         EvLink *link;
1475
1476         link = ev_view_get_link_at_location (view, x, y);
1477
1478         if (view->link_tooltip == NULL) {
1479                 view->link_tooltip = ev_tooltip_new (GTK_WIDGET (view));
1480         }
1481
1482         if (view->hovered_link != link) {
1483                 view->hovered_link = link;
1484                 ev_tooltip_deactivate (EV_TOOLTIP (view->link_tooltip));
1485         }
1486
1487         if (link) {
1488                 char *msg = tip_from_link (view, link);
1489
1490                 if (msg && g_utf8_validate (msg, -1, NULL)) {
1491                         EvTooltip *tooltip = EV_TOOLTIP (view->link_tooltip);
1492
1493                         ev_tooltip_set_position (tooltip, x, y);
1494                         ev_tooltip_set_text (tooltip, msg);
1495                         ev_tooltip_activate (tooltip);
1496                 }
1497                 g_free (msg);
1498
1499                 ev_view_set_cursor (view, EV_VIEW_CURSOR_LINK);
1500         } else if (location_in_text (view, x + view->scroll_x, y + view->scroll_y)) {
1501                 ev_view_set_cursor (view, EV_VIEW_CURSOR_IBEAM);
1502         } else {
1503                 ev_view_set_status (view, NULL);
1504                 if (view->cursor == EV_VIEW_CURSOR_LINK ||
1505                     view->cursor == EV_VIEW_CURSOR_IBEAM)
1506                         ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
1507         }
1508         return;
1509 }
1510
1511 /*** GtkWidget implementation ***/
1512
1513 static void
1514 ev_view_size_request_continuous_dual_page (EvView         *view,
1515                                            GtkRequisition *requisition)
1516 {
1517         int max_width;
1518         gint n_pages;
1519         GtkBorder border;
1520
1521         ev_page_cache_get_max_width (view->page_cache, view->rotation,
1522                                      view->scale, &max_width);
1523         compute_border (view, max_width, max_width, &border);
1524
1525         n_pages = ev_page_cache_get_n_pages (view->page_cache) + 1;
1526
1527         requisition->width = (max_width + border.left + border.right) * 2 + (view->spacing * 3);
1528         get_page_y_offset (view, n_pages, view->scale, &requisition->height);
1529
1530         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
1531                 requisition->width = 1;
1532         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
1533                 requisition->width = 1;
1534                 /* FIXME: This could actually be set on one page docs or docs
1535                  * with a strange aspect ratio. */
1536                 /* requisition->height = 1;*/
1537         }
1538 }
1539
1540 static void
1541 ev_view_size_request_continuous (EvView         *view,
1542                                  GtkRequisition *requisition)
1543 {
1544         int max_width;
1545         int n_pages;
1546         GtkBorder border;
1547
1548
1549         ev_page_cache_get_max_width (view->page_cache, view->rotation,
1550                                      view->scale, &max_width);
1551         n_pages = ev_page_cache_get_n_pages (view->page_cache);
1552         compute_border (view, max_width, max_width, &border);
1553
1554         requisition->width = max_width + (view->spacing * 2) + border.left + border.right;
1555         get_page_y_offset (view, n_pages, view->scale, &requisition->height);
1556
1557         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
1558                 requisition->width = 1;
1559         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
1560                 requisition->width = 1;
1561                 /* FIXME: This could actually be set on one page docs or docs
1562                  * with a strange aspect ratio. */
1563                 /* requisition->height = 1;*/
1564         }
1565 }
1566
1567 static void
1568 ev_view_size_request_dual_page (EvView         *view,
1569                                 GtkRequisition *requisition)
1570 {
1571         GtkBorder border;
1572         gint width, height;
1573
1574         /* Find the largest of the two. */
1575         ev_page_cache_get_size (view->page_cache,
1576                                 view->current_page,
1577                                 view->rotation,
1578                                 view->scale,
1579                                 &width, &height);
1580         if (view->current_page + 1 < ev_page_cache_get_n_pages (view->page_cache)) {
1581                 gint width_2, height_2;
1582                 ev_page_cache_get_size (view->page_cache,
1583                                         view->current_page + 1,
1584                                         view->rotation,
1585                                         view->scale,
1586                                         &width_2, &height_2);
1587                 if (width_2 > width) {
1588                         width = width_2;
1589                         height = height_2;
1590                 }
1591         }
1592         compute_border (view, width, height, &border);
1593
1594         requisition->width = ((width + border.left + border.right) * 2) +
1595                 (view->spacing * 3);
1596         requisition->height = (height + border.top + border.bottom) +
1597                 (view->spacing * 2);
1598
1599         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
1600                 requisition->width = 1;
1601         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
1602                 requisition->width = 1;
1603                 requisition->height = 1;
1604         }
1605 }
1606
1607 static void
1608 ev_view_size_request_single_page (EvView         *view,
1609                                   GtkRequisition *requisition)
1610 {
1611         GtkBorder border;
1612         gint width, height;
1613
1614         ev_page_cache_get_size (view->page_cache,
1615                                 view->current_page,
1616                                 view->rotation,
1617                                 view->scale,
1618                                 &width, &height);
1619         compute_border (view, width, height, &border);
1620
1621         requisition->width = width + border.left + border.right + (2 * view->spacing);
1622         requisition->height = height + border.top + border.bottom + (2 * view->spacing);
1623
1624         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
1625                 requisition->width = 1;
1626                 requisition->height = height + border.top + border.bottom + (2 * view->spacing);
1627         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
1628                 requisition->width = 1;
1629                 requisition->height = 1;
1630         }
1631 }
1632
1633 static void
1634 ev_view_size_request (GtkWidget      *widget,
1635                       GtkRequisition *requisition)
1636 {
1637         EvView *view = EV_VIEW (widget);
1638
1639         if (view->document == NULL) {
1640                 requisition->width = 1;
1641                 requisition->height = 1;
1642                 return;
1643         }
1644
1645         if (view->presentation) {
1646                 requisition->width = 1;
1647                 requisition->height = 1;
1648                 return;
1649         }
1650
1651         if (view->continuous && view->dual_page)
1652                 ev_view_size_request_continuous_dual_page (view, requisition);
1653         else if (view->continuous)
1654                 ev_view_size_request_continuous (view, requisition);
1655         else if (view->dual_page)
1656                 ev_view_size_request_dual_page (view, requisition);
1657         else
1658                 ev_view_size_request_single_page (view, requisition);
1659 }
1660
1661 static void
1662 ev_view_size_allocate (GtkWidget      *widget,
1663                        GtkAllocation  *allocation)
1664 {
1665         EvView *view = EV_VIEW (widget);
1666
1667         if (view->sizing_mode == EV_SIZING_FIT_WIDTH ||
1668             view->sizing_mode == EV_SIZING_BEST_FIT) {
1669
1670                 g_signal_emit (view, signals[SIGNAL_ZOOM_INVALID], 0);
1671
1672                 ev_view_size_request (widget, &widget->requisition);
1673         }
1674
1675         view_set_adjustment_values (view, GTK_ORIENTATION_HORIZONTAL);
1676         view_set_adjustment_values (view, GTK_ORIENTATION_VERTICAL);
1677
1678         if (view->document)
1679                 view_update_range_and_current_page (view);
1680
1681         view->pending_scroll = SCROLL_TO_KEEP_POSITION;
1682         view->pending_resize = FALSE;
1683
1684         GTK_WIDGET_CLASS (ev_view_parent_class)->size_allocate (widget, allocation);
1685 }
1686
1687 static void
1688 ev_view_realize (GtkWidget *widget)
1689 {
1690         EvView *view = EV_VIEW (widget);
1691         GdkWindowAttr attributes;
1692
1693         GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
1694
1695         attributes.window_type = GDK_WINDOW_CHILD;
1696         attributes.wclass = GDK_INPUT_OUTPUT;
1697         attributes.visual = gtk_widget_get_visual (widget);
1698         attributes.colormap = gtk_widget_get_colormap (widget);
1699
1700         attributes.x = widget->allocation.x;
1701         attributes.y = widget->allocation.y;
1702         attributes.width = widget->allocation.width;
1703         attributes.height = widget->allocation.height;
1704         attributes.event_mask = GDK_EXPOSURE_MASK |
1705                                 GDK_BUTTON_PRESS_MASK |
1706                                 GDK_BUTTON_RELEASE_MASK |
1707                                 GDK_SCROLL_MASK |
1708                                 GDK_KEY_PRESS_MASK |
1709                                 GDK_POINTER_MOTION_MASK |
1710                                 GDK_POINTER_MOTION_HINT_MASK |
1711                                 GDK_ENTER_NOTIFY_MASK |
1712                                 GDK_LEAVE_NOTIFY_MASK;
1713
1714         widget->window = gdk_window_new (gtk_widget_get_parent_window (widget),
1715                                          &attributes,
1716                                          GDK_WA_X | GDK_WA_Y |
1717                                          GDK_WA_COLORMAP |
1718                                          GDK_WA_VISUAL);
1719         gdk_window_set_user_data (widget->window, widget);
1720         widget->style = gtk_style_attach (widget->style, widget->window);
1721
1722         if (view->presentation)
1723                 gdk_window_set_background (widget->window, &widget->style->black);
1724         else
1725                 gdk_window_set_background (widget->window, &widget->style->mid [GTK_STATE_NORMAL]);
1726 }
1727
1728 static gboolean
1729 ev_view_scroll_event (GtkWidget *widget, GdkEventScroll *event)
1730 {
1731         EvView *view = EV_VIEW (widget);
1732         guint state;
1733
1734         state = event->state & gtk_accelerator_get_default_mod_mask ();
1735
1736         if (state == GDK_CONTROL_MASK && view->presentation == FALSE) {
1737                 ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1738
1739                 if (event->direction == GDK_SCROLL_UP ||
1740                     event->direction == GDK_SCROLL_LEFT) {
1741                         if (ev_view_can_zoom_in (view)) {
1742                                 ev_view_zoom_in (view);
1743                         }
1744                 } else {
1745                         if (ev_view_can_zoom_out (view)) {
1746                                 ev_view_zoom_out (view);
1747                         }
1748                 }
1749
1750                 return TRUE;
1751         }
1752
1753         view->jump_to_find_result = FALSE;
1754         /* Shift+Wheel scrolls the in the perpendicular direction */
1755         if (state & GDK_SHIFT_MASK) {
1756                 if (event->direction == GDK_SCROLL_UP)
1757                         event->direction = GDK_SCROLL_LEFT;
1758                 if (event->direction == GDK_SCROLL_LEFT)
1759                         event->direction = GDK_SCROLL_UP;
1760                 if (event->direction == GDK_SCROLL_DOWN)
1761                         event->direction = GDK_SCROLL_RIGHT;
1762                 if (event->direction == GDK_SCROLL_RIGHT)
1763                         event->direction = GDK_SCROLL_DOWN;
1764
1765                 event->state &= ~GDK_SHIFT_MASK;
1766                 state &= ~GDK_SHIFT_MASK;
1767         }
1768
1769         if (state == 0 && view->presentation) {
1770                 switch (event->direction) {
1771                         case GDK_SCROLL_DOWN:
1772                         case GDK_SCROLL_RIGHT:
1773                                 ev_view_next_page (view);
1774                                 break;
1775                         case GDK_SCROLL_UP:
1776                         case GDK_SCROLL_LEFT:
1777                                 ev_view_previous_page (view);
1778                                 break;
1779                 }
1780
1781                 return TRUE;
1782         }
1783
1784         return FALSE;
1785 }
1786
1787 static EvViewSelection *
1788 find_selection_for_page (EvView *view,
1789                          gint    page)
1790 {
1791         GList *list;
1792
1793         for (list = view->selection_info.selections; list != NULL; list = list->next) {
1794                 EvViewSelection *selection;
1795
1796                 selection = (EvViewSelection *) list->data;
1797
1798                 if (selection->page == page)
1799                         return selection;
1800         }
1801
1802         return NULL;
1803 }
1804
1805 static void
1806 draw_end_presentation_page (EvView       *view,
1807                             GdkRectangle *page_area)
1808 {
1809         PangoLayout *layout;
1810         PangoFontDescription *font_desc;
1811         gchar *markup;
1812         const gchar *text = _("End of presentation. Press Escape to exit.");
1813
1814         if (view->presentation_state != EV_PRESENTATION_END)
1815                 return;
1816
1817         layout = gtk_widget_create_pango_layout (GTK_WIDGET (view), NULL);
1818         markup = g_strdup_printf ("<span foreground=\"white\">%s</span>", text);
1819         pango_layout_set_markup (layout, markup, -1);
1820         g_free (markup);
1821
1822         font_desc = pango_font_description_new ();
1823         pango_font_description_set_size (font_desc, 16 * PANGO_SCALE);
1824         pango_layout_set_font_description (layout, font_desc);
1825
1826         gtk_paint_layout (GTK_WIDGET (view)->style,
1827                           GTK_WIDGET (view)->window,
1828                           GTK_WIDGET_STATE (view),
1829                           FALSE,
1830                           page_area,
1831                           GTK_WIDGET (view),
1832                           NULL,
1833                           page_area->x + 15,
1834                           page_area->y + 15,
1835                           layout);
1836
1837         pango_font_description_free (font_desc);
1838         g_object_unref (layout);
1839 }
1840
1841 static gboolean
1842 ev_view_expose_event (GtkWidget      *widget,
1843                       GdkEventExpose *event)
1844 {
1845         EvView *view = EV_VIEW (widget);
1846         int i;
1847
1848         if (view->presentation) {
1849                 switch (view->presentation_state) {
1850                         case EV_PRESENTATION_END: {
1851                                 GdkRectangle area = {0};
1852
1853                                 area.width = widget->allocation.width;
1854                                 area.height = widget->allocation.height;
1855
1856                                 draw_end_presentation_page (view, &area);
1857                         }
1858                                 return FALSE;
1859                         case EV_PRESENTATION_BLACK:
1860                         case EV_PRESENTATION_WHITE:
1861                                 return FALSE;
1862                         case EV_PRESENTATION_NORMAL:
1863                         default:
1864                                 break;
1865                 }
1866         }
1867
1868         if (view->loading) {
1869                 GdkRectangle area = {0};
1870
1871                 area.width = widget->allocation.width;
1872                 area.height = widget->allocation.height;
1873
1874                 draw_loading_text (view,
1875                                    &area,
1876                                    &(event->area));
1877         }
1878
1879         if (view->document == NULL)
1880                 return FALSE;
1881
1882         for (i = view->start_page; i <= view->end_page; i++) {
1883                 GdkRectangle page_area;
1884                 GtkBorder border;
1885                 gboolean page_ready = TRUE;
1886
1887                 if (!get_page_extents (view, i, &page_area, &border))
1888                         continue;
1889
1890                 page_area.x -= view->scroll_x;
1891                 page_area.y -= view->scroll_y;
1892
1893                 draw_one_page (view, i, &page_area, &border, &(event->area), &page_ready);
1894
1895                 if (page_ready && EV_IS_DOCUMENT_FIND (view->document))
1896                         highlight_find_results (view, i);
1897         }
1898
1899         return FALSE;
1900 }
1901
1902 static gboolean
1903 ev_view_popup_menu (GtkWidget *widget)
1904 {
1905     gint x, y;
1906     EvLink *link;
1907     EvView *view = EV_VIEW (widget);
1908
1909     gtk_widget_get_pointer (widget, &x, &y);
1910     link = ev_view_get_link_at_location (view, x, y);
1911     g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, link);
1912     return TRUE;
1913 }
1914
1915 static gboolean
1916 ev_view_button_press_event (GtkWidget      *widget,
1917                             GdkEventButton *event)
1918 {
1919         EvView *view = EV_VIEW (widget);
1920         EvLink *link;
1921
1922         if (!GTK_WIDGET_HAS_FOCUS (widget)) {
1923                 gtk_widget_grab_focus (widget);
1924         }
1925
1926         view->pressed_button = event->button;
1927         view->selection_info.in_drag = FALSE;
1928
1929         switch (event->button) {
1930                 case 1:
1931                         if (view->selection_info.selections) {
1932                                 if (location_in_selected_text (view,
1933                                                                event->x + view->scroll_x,
1934                                                                event->y + view->scroll_y)) {
1935                                         view->selection_info.in_drag = TRUE;
1936                                 } else {
1937                                         clear_selection (view);
1938                                 }
1939
1940                                 gtk_widget_queue_draw (widget);
1941                         }
1942
1943                         view->selection_info.start.x = event->x + view->scroll_x;
1944                         view->selection_info.start.y = event->y + view->scroll_y;
1945
1946                         return TRUE;
1947                 case 2:
1948                         /* use root coordinates as reference point because
1949                          * scrolling changes window relative coordinates */
1950                         view->drag_info.start.x = event->x_root;
1951                         view->drag_info.start.y = event->y_root;
1952                         view->drag_info.hadj = gtk_adjustment_get_value (view->hadjustment);
1953                         view->drag_info.vadj = gtk_adjustment_get_value (view->vadjustment);
1954
1955                         ev_view_set_cursor (view, EV_VIEW_CURSOR_DRAG);
1956
1957                         return TRUE;
1958                 case 3:
1959                         link = ev_view_get_link_at_location (view, event->x, event->y);
1960                         g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, link);
1961                         return TRUE;
1962         }
1963
1964         return FALSE;
1965 }
1966
1967 /*** Drag and Drop ***/
1968 static void
1969 ev_view_drag_data_get (GtkWidget        *widget,
1970                        GdkDragContext   *context,
1971                        GtkSelectionData *selection_data,
1972                        guint             info,
1973                        guint             time)
1974 {
1975         EvView *view = EV_VIEW (widget);
1976
1977         if (view->selection_info.selections &&
1978             ev_document_can_get_text (view->document)) {
1979                 gchar *text;
1980
1981                 text = get_selected_text (view);
1982
1983                 gtk_selection_data_set_text (selection_data, text, strlen (text));
1984
1985                 g_free (text);
1986         }
1987 }
1988
1989 static void
1990 ev_view_drag_data_received (GtkWidget          *widget,
1991                             GdkDragContext     *context,
1992                             gint                x,
1993                             gint                y,
1994                             GtkSelectionData   *selection_data,
1995                             guint               info,
1996                             guint               time)
1997 {
1998         gchar  **uris;
1999         gint     i = 0;
2000         GSList  *uri_list = NULL;
2001
2002         uris = gtk_selection_data_get_uris (selection_data);
2003         if (!uris) {
2004                 gtk_drag_finish (context, FALSE, FALSE, time);
2005                 return;
2006         }
2007
2008         for (i = 0; uris[i]; i++) {
2009                 uri_list = g_slist_prepend (uri_list, (gpointer) uris[i]);
2010         }
2011
2012         ev_application_open_uri_list (EV_APP, uri_list,
2013                                       gtk_widget_get_screen (widget),
2014                                       0);
2015         gtk_drag_finish (context, TRUE, FALSE, time);
2016
2017         g_strfreev (uris);
2018         g_slist_free (uri_list);
2019 }
2020
2021
2022 static gboolean
2023 selection_update_idle_cb (EvView *view)
2024 {
2025         compute_selections (view, &view->selection_info.start, &view->motion);
2026         view->selection_update_id = 0;
2027         return FALSE;
2028 }
2029
2030 static gboolean
2031 selection_scroll_timeout_cb (EvView *view)
2032 {
2033         gint x, y, shift = 0;
2034         GtkWidget *widget = GTK_WIDGET (view);
2035
2036         gtk_widget_get_pointer (widget, &x, &y);
2037
2038         if (y > widget->allocation.height) {
2039                 shift = (y - widget->allocation.height) / 2;
2040         } else if (y < 0) {
2041                 shift = y / 2;
2042         }
2043
2044         if (shift)
2045                 gtk_adjustment_set_value (view->vadjustment,
2046                                           CLAMP (view->vadjustment->value + shift,
2047                                           view->vadjustment->lower,
2048                                           view->vadjustment->upper -
2049                                           view->vadjustment->page_size));
2050
2051         if (x > widget->allocation.width) {
2052                 shift = (x - widget->allocation.width) / 2;
2053         } else if (x < 0) {
2054                 shift = x / 2;
2055         }
2056
2057         if (shift)
2058                 gtk_adjustment_set_value (view->hadjustment,
2059                                           CLAMP (view->hadjustment->value + shift,
2060                                           view->hadjustment->lower,
2061                                           view->hadjustment->upper -
2062                                           view->hadjustment->page_size));
2063
2064         return TRUE;
2065 }
2066
2067 static gboolean
2068 ev_view_motion_notify_event (GtkWidget      *widget,
2069                              GdkEventMotion *event)
2070 {
2071         EvView *view = EV_VIEW (widget);
2072         gint x, y;
2073
2074         if (!view->document)
2075                 return FALSE;
2076
2077         if (event->is_hint || event->window != widget->window) {
2078             gtk_widget_get_pointer (widget, &x, &y);
2079         } else {
2080             x = event->x;
2081             y = event->y;
2082         }
2083
2084         if (view->selection_info.in_drag) {
2085                 if (gtk_drag_check_threshold (widget,
2086                                               view->selection_info.start.x,
2087                                               view->selection_info.start.y,
2088                                               x, y)) {
2089                         GdkDragContext *context;
2090                         GtkTargetList *target_list = gtk_target_list_new (NULL, 0);
2091
2092                         gtk_target_list_add_text_targets (target_list, 0);
2093
2094                         context = gtk_drag_begin (widget, target_list,
2095                                                   GDK_ACTION_COPY,
2096                                                   1, (GdkEvent *)event);
2097
2098                         view->selection_info.in_drag = FALSE;
2099
2100                         gtk_target_list_unref (target_list);
2101
2102                         return TRUE;
2103                 }
2104         }
2105
2106         /* For the Evince 0.4.x release, we limit selection to un-rotated
2107          * documents only.
2108          */
2109         if (view->pressed_button == 1 && view->rotation == 0) {
2110
2111                 /* Schedule timeout to scroll during selection and additionally
2112                  * scroll once to allow arbitrary speed. */
2113                 if (!view->selection_scroll_id)
2114                     view->selection_scroll_id = g_timeout_add (SCROLL_TIME, (GSourceFunc)selection_scroll_timeout_cb, view);
2115                 else
2116                     selection_scroll_timeout_cb (view);
2117
2118                 view->selection_info.in_selection = TRUE;
2119                 view->motion.x = x + view->scroll_x;
2120                 view->motion.y = y + view->scroll_y;
2121
2122                 /* Queue an idle to handle the motion.  We do this because
2123                  * handling any selection events in the motion could be slower
2124                  * than new motion events reach us.  We always put it in the
2125                  * idle to make sure we catch up and don't visibly lag the
2126                  * mouse. */
2127                 if (!view->selection_update_id)
2128                         view->selection_update_id = g_idle_add ((GSourceFunc)selection_update_idle_cb, view);
2129
2130                 return TRUE;
2131         } else if (view->pressed_button == 2) {
2132                 if (!view->drag_info.in_drag) {
2133                         gboolean start;
2134
2135                         start = gtk_drag_check_threshold (widget,
2136                                                           view->drag_info.start.x,
2137                                                           view->drag_info.start.y,
2138                                                           event->x_root,
2139                                                           event->y_root);
2140                         view->drag_info.in_drag = start;
2141                 }
2142
2143                 if (view->drag_info.in_drag) {
2144                         int dx, dy;
2145                         gdouble dhadj_value, dvadj_value;
2146
2147                         dx = event->x_root - view->drag_info.start.x;
2148                         dy = event->y_root - view->drag_info.start.y;
2149
2150                         dhadj_value = view->hadjustment->page_size *
2151                                       (gdouble)dx / widget->allocation.width;
2152                         dvadj_value = view->vadjustment->page_size *
2153                                       (gdouble)dy / widget->allocation.height;
2154
2155                         /* clamp scrolling to visible area */
2156                         gtk_adjustment_set_value (view->hadjustment,
2157                                                   MIN(view->drag_info.hadj - dhadj_value,
2158                                                       view->hadjustment->upper -
2159                                                       view->hadjustment->page_size));
2160                         gtk_adjustment_set_value (view->vadjustment,
2161                                                   MIN(view->drag_info.vadj - dvadj_value,
2162                                                       view->vadjustment->upper -
2163                                                       view->vadjustment->page_size));
2164
2165                         return TRUE;
2166                 }
2167         } else if (view->pressed_button <= 0) {
2168                 handle_link_over_xy (view, x, y);
2169                 return TRUE;
2170         }
2171
2172         return FALSE;
2173 }
2174
2175 static gboolean
2176 ev_view_button_release_event (GtkWidget      *widget,
2177                               GdkEventButton *event)
2178 {
2179         EvView *view = EV_VIEW (widget);
2180         EvLink *link;
2181
2182         if (view->pressed_button == 2) {
2183                 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
2184         }
2185
2186         if (view->document && view->pressed_button == 1) {
2187                 link = ev_view_get_link_at_location (view, event->x, event->y);
2188         } else {
2189                 link = NULL;
2190         }
2191
2192         view->pressed_button = -1;
2193         view->drag_info.in_drag = FALSE;
2194
2195         if (view->selection_scroll_id) {
2196             g_source_remove (view->selection_scroll_id);
2197             view->selection_scroll_id = 0;
2198         }
2199         if (view->selection_update_id) {
2200             g_source_remove (view->selection_update_id);
2201             view->selection_update_id = 0;
2202         }
2203
2204         if (view->selection_info.selections) {
2205                 ev_view_update_primary_selection (view);
2206
2207                 if (view->selection_info.in_drag) {
2208                         clear_selection (view);
2209                         gtk_widget_queue_draw (widget);
2210                 }
2211
2212                 view->selection_info.in_drag = FALSE;
2213         } else if (link) {
2214                 ev_view_handle_link (view, link);
2215         } else if (view->presentation) {
2216                 switch (event->button) {
2217                         case 1:
2218                                 ev_view_next_page (view);
2219                                 return TRUE;
2220                         case 3:
2221                                 ev_view_previous_page (view);
2222                                 return TRUE;
2223                 }
2224         }
2225
2226         return FALSE;
2227 }
2228
2229 /* Goto Window */
2230 /* Cut and paste from gtkwindow.c */
2231 static void
2232 send_focus_change (GtkWidget *widget,
2233                    gboolean   in)
2234 {
2235         GdkEvent *fevent = gdk_event_new (GDK_FOCUS_CHANGE);
2236
2237         g_object_ref (widget);
2238
2239         if (in)
2240                 GTK_WIDGET_SET_FLAGS (widget, GTK_HAS_FOCUS);
2241         else
2242                 GTK_WIDGET_UNSET_FLAGS (widget, GTK_HAS_FOCUS);
2243
2244         fevent->focus_change.type = GDK_FOCUS_CHANGE;
2245         fevent->focus_change.window = g_object_ref (widget->window);
2246         fevent->focus_change.in = in;
2247
2248         gtk_widget_event (widget, fevent);
2249
2250         g_object_notify (G_OBJECT (widget), "has-focus");
2251
2252         g_object_unref (widget);
2253         gdk_event_free (fevent);
2254 }
2255
2256 static void
2257 ev_view_goto_window_hide (EvView *view)
2258 {
2259         /* send focus-in event */
2260         send_focus_change (view->goto_entry, FALSE);
2261         gtk_widget_hide (view->goto_window);
2262         gtk_entry_set_text (GTK_ENTRY (view->goto_entry), "");
2263 }
2264
2265 static gboolean
2266 ev_view_goto_window_delete_event (GtkWidget   *widget,
2267                                   GdkEventAny *event,
2268                                   EvView      *view)
2269 {
2270         ev_view_goto_window_hide (view);
2271
2272         return TRUE;
2273 }
2274
2275 static gboolean
2276 key_is_numeric (guint keyval)
2277 {
2278         return ((keyval >= GDK_0 && keyval <= GDK_9) ||
2279                 (keyval >= GDK_KP_0 && keyval <= GDK_KP_9));
2280 }
2281
2282 static gboolean
2283 ev_view_goto_window_key_press_event (GtkWidget   *widget,
2284                                      GdkEventKey *event,
2285                                      EvView      *view)
2286 {
2287         switch (event->keyval) {
2288                 case GDK_Escape:
2289                 case GDK_Tab:
2290                 case GDK_KP_Tab:
2291                 case GDK_ISO_Left_Tab:
2292                         ev_view_goto_window_hide (view);
2293                         return TRUE;
2294                 case GDK_Return:
2295                 case GDK_KP_Enter:
2296                 case GDK_ISO_Enter:
2297                         return FALSE;
2298                 default:
2299                         if (!key_is_numeric (event->keyval))
2300                                 return TRUE;
2301         }
2302
2303         return FALSE;
2304 }
2305
2306 static gboolean
2307 ev_view_goto_window_button_press_event (GtkWidget      *widget,
2308                                         GdkEventButton *event,
2309                                         EvView         *view)
2310 {
2311         ev_view_goto_window_hide (view);
2312
2313         return TRUE;
2314 }
2315
2316 static void
2317 ev_view_goto_entry_activate (GtkEntry *entry,
2318                              EvView   *view)
2319 {
2320         const gchar *text;
2321         gint         page;
2322
2323         text = gtk_entry_get_text (entry);
2324         page = atoi (text) - 1;
2325
2326         ev_view_goto_window_hide (view);
2327
2328         if (page >= 0 &&
2329             page < ev_page_cache_get_n_pages (view->page_cache))
2330                 ev_page_cache_set_current_page (view->page_cache, page);
2331 }
2332
2333 static void
2334 ev_view_goto_window_create (EvView *view)
2335 {
2336         GtkWidget *frame, *hbox, *toplevel, *label;
2337
2338         toplevel = gtk_widget_get_toplevel (GTK_WIDGET (view));
2339
2340         if (view->goto_window) {
2341                 if (GTK_WINDOW (toplevel)->group)
2342                         gtk_window_group_add_window (GTK_WINDOW (toplevel)->group,
2343                                                      GTK_WINDOW (view->goto_window));
2344                 else if (GTK_WINDOW (view->goto_window)->group)
2345                         gtk_window_group_remove_window (GTK_WINDOW (view->goto_window)->group,
2346                                                         GTK_WINDOW (view->goto_window));
2347                 return;
2348         }
2349
2350         view->goto_window = gtk_window_new (GTK_WINDOW_POPUP);
2351
2352         if (GTK_WINDOW (toplevel)->group)
2353                 gtk_window_group_add_window (GTK_WINDOW (toplevel)->group,
2354                                              GTK_WINDOW (view->goto_window));
2355
2356         gtk_window_set_modal (GTK_WINDOW (view->goto_window), TRUE);
2357
2358         g_signal_connect (view->goto_window, "delete_event",
2359                           G_CALLBACK (ev_view_goto_window_delete_event),
2360                           view);
2361         g_signal_connect (view->goto_window, "key_press_event",
2362                           G_CALLBACK (ev_view_goto_window_key_press_event),
2363                           view);
2364         g_signal_connect (view->goto_window, "button_press_event",
2365                           G_CALLBACK (ev_view_goto_window_button_press_event),
2366                           view);
2367
2368         frame = gtk_frame_new (NULL);
2369         gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_ETCHED_IN);
2370         gtk_container_add (GTK_CONTAINER (view->goto_window), frame);
2371         gtk_widget_show (frame);
2372
2373         hbox = gtk_hbox_new (FALSE, 0);
2374         gtk_container_set_border_width (GTK_CONTAINER (hbox), 3);
2375         gtk_container_add (GTK_CONTAINER (frame), hbox);
2376         gtk_widget_show (hbox);
2377
2378         label = gtk_label_new(_("Jump to page:"));
2379         gtk_box_pack_start (GTK_BOX (hbox), label, TRUE, TRUE, 3);
2380         gtk_widget_show (label);
2381         gtk_widget_realize (label);
2382
2383         view->goto_entry = gtk_entry_new ();
2384         g_signal_connect (view->goto_entry, "activate",
2385                           G_CALLBACK (ev_view_goto_entry_activate),
2386                           view);
2387         gtk_box_pack_start_defaults (GTK_BOX (hbox), view->goto_entry);
2388         gtk_widget_show (view->goto_entry);
2389         gtk_widget_realize (view->goto_entry);
2390 }
2391
2392 static void
2393 ev_view_goto_entry_grab_focus (EvView *view)
2394 {
2395         GtkWidgetClass *entry_parent_class;
2396
2397         entry_parent_class = g_type_class_peek_parent (GTK_ENTRY_GET_CLASS (view->goto_entry));
2398         (entry_parent_class->grab_focus) (view->goto_entry);
2399
2400         send_focus_change (view->goto_entry, TRUE);
2401 }
2402
2403 static void
2404 ev_view_goto_window_send_key_event (EvView   *view,
2405                                     GdkEvent *event)
2406 {
2407         GdkEventKey *new_event;
2408         GdkScreen   *screen;
2409
2410         /* Move goto window off screen */
2411         screen = gtk_widget_get_screen (GTK_WIDGET (view));
2412         gtk_window_move (GTK_WINDOW (view->goto_window),
2413                          gdk_screen_get_width (screen) + 1,
2414                          gdk_screen_get_height (screen) + 1);
2415         gtk_widget_show (view->goto_window);
2416
2417         new_event = (GdkEventKey *) gdk_event_copy (event);
2418         g_object_unref (new_event->window);
2419         new_event->window = g_object_ref (view->goto_window->window);
2420         gtk_widget_realize (view->goto_window);
2421
2422         gtk_widget_event (view->goto_window, (GdkEvent *)new_event);
2423         gdk_event_free ((GdkEvent *)new_event);
2424         gtk_widget_hide (view->goto_window);
2425 }
2426
2427 static gboolean
2428 ev_view_key_press_event (GtkWidget   *widget,
2429                          GdkEventKey *event)
2430 {
2431         EvView *view = EV_VIEW (widget);
2432         EvPresentationState current;
2433
2434         if (!view->presentation ||
2435             view->presentation_state == EV_PRESENTATION_END)
2436                 return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
2437
2438
2439         current = view->presentation_state;
2440
2441         switch (event->keyval) {
2442                 case GDK_b:
2443                 case GDK_B:
2444                         view->presentation_state =
2445                                 (view->presentation_state == EV_PRESENTATION_BLACK) ?
2446                                 EV_PRESENTATION_NORMAL : EV_PRESENTATION_BLACK;
2447                         break;
2448                 case GDK_w:
2449                 case GDK_W:
2450                         view->presentation_state =
2451                                 (view->presentation_state == EV_PRESENTATION_WHITE) ?
2452                                 EV_PRESENTATION_NORMAL : EV_PRESENTATION_WHITE;
2453                         break;
2454                 default:
2455                         if (view->presentation_state == EV_PRESENTATION_BLACK ||
2456                             view->presentation_state == EV_PRESENTATION_WHITE) {
2457                                 view->presentation_state = EV_PRESENTATION_NORMAL;
2458                         }
2459         }
2460
2461         if (current == view->presentation_state) {
2462                 if (ev_page_cache_get_n_pages (view->page_cache) > 1 &&
2463                     key_is_numeric (event->keyval)) {
2464                         gint x, y;
2465
2466                         ev_view_goto_window_create (view);
2467                         ev_view_goto_window_send_key_event (view, (GdkEvent *)event);
2468                         gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
2469                         gtk_window_move (GTK_WINDOW (view->goto_window), x, y);
2470                         gtk_widget_show (view->goto_window);
2471                         ev_view_goto_entry_grab_focus (view);
2472
2473                         return TRUE;
2474                 }
2475
2476                 return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
2477         }
2478
2479         switch (view->presentation_state) {
2480                 case EV_PRESENTATION_NORMAL:
2481                 case EV_PRESENTATION_BLACK:
2482                         gdk_window_set_background (widget->window,
2483                                                    &widget->style->black);
2484                         break;
2485                 case EV_PRESENTATION_WHITE:
2486                         gdk_window_set_background (widget->window,
2487                                                    &widget->style->white);
2488                         break;
2489                 default:
2490                         return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
2491         }
2492
2493         gtk_widget_queue_draw (widget);
2494         return TRUE;
2495 }
2496
2497 static gint
2498 ev_view_focus_in (GtkWidget     *widget,
2499                   GdkEventFocus *event)
2500 {
2501         if (EV_VIEW (widget)->pixbuf_cache)
2502                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
2503         gtk_widget_queue_draw (widget);
2504
2505         return FALSE;
2506 }
2507
2508 static gint
2509 ev_view_focus_out (GtkWidget     *widget,
2510                      GdkEventFocus *event)
2511 {
2512         if (EV_VIEW (widget)->goto_window)
2513                 ev_view_goto_window_hide (EV_VIEW (widget));
2514
2515         if (EV_VIEW (widget)->pixbuf_cache)
2516                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
2517         gtk_widget_queue_draw (widget);
2518
2519         return FALSE;
2520 }
2521
2522 static gboolean
2523 ev_view_leave_notify_event (GtkWidget *widget, GdkEventCrossing   *event)
2524 {
2525         EvView *view = EV_VIEW (widget);
2526
2527         ev_view_set_status (view, NULL);
2528
2529         if (view->cursor == EV_VIEW_CURSOR_LINK ||
2530             view->cursor == EV_VIEW_CURSOR_IBEAM)
2531                 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
2532
2533         if (view->link_tooltip) {
2534                 view->hovered_link = NULL;
2535                 ev_tooltip_deactivate (EV_TOOLTIP (view->link_tooltip));
2536         }
2537
2538         return FALSE;
2539 }
2540
2541 static gboolean
2542 ev_view_enter_notify_event (GtkWidget *widget, GdkEventCrossing   *event)
2543 {
2544         EvView *view = EV_VIEW (widget);
2545
2546         handle_link_over_xy (view, event->x, event->y);
2547
2548         return FALSE;
2549 }
2550
2551 static void
2552 ev_view_style_set (GtkWidget *widget,
2553                    GtkStyle  *old_style)
2554 {
2555         if (EV_VIEW (widget)->pixbuf_cache)
2556                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
2557
2558         GTK_WIDGET_CLASS (ev_view_parent_class)->style_set (widget, old_style);
2559 }
2560
2561 /*** Drawing ***/
2562
2563 static guint32
2564 ev_gdk_color_to_rgb (const GdkColor *color)
2565 {
2566   guint32 result;
2567   result = (0xff0000 | (color->red & 0xff00));
2568   result <<= 8;
2569   result |= ((color->green & 0xff00) | (color->blue >> 8));
2570   return result;
2571 }
2572
2573 static void
2574 draw_rubberband (GtkWidget *widget, GdkWindow *window,
2575                  const GdkRectangle *rect, guchar alpha)
2576 {
2577         GdkGC *gc;
2578         GdkPixbuf *pixbuf;
2579         GdkColor *fill_color_gdk;
2580         guint fill_color;
2581
2582         fill_color_gdk = gdk_color_copy (&GTK_WIDGET (widget)->style->base[GTK_STATE_SELECTED]);
2583         fill_color = ev_gdk_color_to_rgb (fill_color_gdk) << 8 | alpha;
2584
2585         pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE, 8,
2586                                  rect->width, rect->height);
2587         gdk_pixbuf_fill (pixbuf, fill_color);
2588
2589         gdk_draw_pixbuf (window, NULL, pixbuf,
2590                          0, 0,
2591                          rect->x - EV_VIEW (widget)->scroll_x, rect->y - EV_VIEW (widget)->scroll_y,
2592                          rect->width, rect->height,
2593                          GDK_RGB_DITHER_NONE,
2594                          0, 0);
2595
2596         g_object_unref (pixbuf);
2597
2598         gc = gdk_gc_new (window);
2599         gdk_gc_set_rgb_fg_color (gc, fill_color_gdk);
2600         gdk_draw_rectangle (window, gc, FALSE,
2601                             rect->x - EV_VIEW (widget)->scroll_x, rect->y - EV_VIEW (widget)->scroll_y,
2602                             rect->width - 1,
2603                             rect->height - 1);
2604         g_object_unref (gc);
2605
2606         gdk_color_free (fill_color_gdk);
2607 }
2608
2609
2610 static void
2611 highlight_find_results (EvView *view, int page)
2612 {
2613         EvDocumentFind *find;
2614         int i, results = 0;
2615
2616         g_return_if_fail (EV_IS_DOCUMENT_FIND (view->document));
2617
2618         find = EV_DOCUMENT_FIND (view->document);
2619
2620         results = ev_document_find_get_n_results (find, page);
2621
2622         for (i = 0; i < results; i++) {
2623                 EvRectangle rectangle;
2624                 GdkRectangle view_rectangle;
2625                 guchar alpha;
2626
2627                 if (i == view->find_result && page == view->current_page) {
2628                         alpha = 0x90;
2629                 } else {
2630                         alpha = 0x20;
2631                 }
2632
2633                 ev_document_find_get_result (find, page, i, &rectangle);
2634                 doc_rect_to_view_rect (view, page, &rectangle, &view_rectangle);
2635                 draw_rubberband (GTK_WIDGET (view), GTK_WIDGET(view)->window,
2636                                  &view_rectangle, alpha);
2637         }
2638 }
2639
2640 static void
2641 draw_loading_text (EvView       *view,
2642                    GdkRectangle *page_area,
2643                    GdkRectangle *expose_area)
2644 {
2645         const char *loading_text;
2646         PangoLayout *layout;
2647         PangoFontDescription *font_desc;
2648         PangoRectangle logical_rect;
2649         double real_scale;
2650         int target_width;
2651
2652         /* Don't annoy users with loading messages during presentations.
2653          * FIXME: Temporary "workaround" for
2654          * http://bugzilla.gnome.org/show_bug.cgi?id=320352 */
2655         if (view->presentation)
2656                 return;
2657
2658         loading_text = _("Loading...");
2659
2660         ev_document_fc_mutex_lock ();
2661
2662         layout = gtk_widget_create_pango_layout (GTK_WIDGET (view), loading_text);
2663
2664         font_desc = pango_font_description_new ();
2665
2666
2667         /* We set the font to be 10 points, get the size, and scale appropriately */
2668         pango_font_description_set_size (font_desc, 10 * PANGO_SCALE);
2669         pango_layout_set_font_description (layout, font_desc);
2670         pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
2671
2672         /* Make sure we fit the middle of the page */
2673         target_width = MAX (page_area->width / 2, 1);
2674         real_scale = ((double)target_width / (double) logical_rect.width) * (PANGO_SCALE * 10);
2675         pango_font_description_set_size (font_desc, (int)real_scale);
2676         pango_layout_set_font_description (layout, font_desc);
2677         pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
2678
2679         gtk_paint_layout (GTK_WIDGET (view)->style,
2680                           GTK_WIDGET (view)->window,
2681                           GTK_WIDGET_STATE (view),
2682                           FALSE,
2683                           page_area,
2684                           GTK_WIDGET (view),
2685                           NULL,
2686                           page_area->x + (target_width/2),
2687                           page_area->y + (page_area->height - logical_rect.height) / 2,
2688                           layout);
2689
2690         pango_font_description_free (font_desc);
2691         g_object_unref (layout);
2692
2693         ev_document_fc_mutex_unlock ();
2694 }
2695
2696 static void
2697 draw_one_page (EvView          *view,
2698                gint             page,
2699                GdkRectangle    *page_area,
2700                GtkBorder       *border,
2701                GdkRectangle    *expose_area,
2702                gboolean        *page_ready)
2703 {
2704         gint width, height;
2705         GdkPixbuf *current_pixbuf;
2706         GdkRectangle overlap;
2707         GdkRectangle real_page_area;
2708         EvViewSelection *selection;
2709         gint current_page;
2710
2711         g_assert (view->document);
2712
2713         if (! gdk_rectangle_intersect (page_area, expose_area, &overlap))
2714                 return;
2715
2716         current_page = ev_page_cache_get_current_page (view->page_cache);
2717         selection = find_selection_for_page (view, page);
2718         ev_page_cache_get_size (view->page_cache,
2719                                 page, view->rotation,
2720                                 view->scale,
2721                                 &width, &height);
2722         /* Render the document itself */
2723         real_page_area = *page_area;
2724
2725         real_page_area.x += border->left;
2726         real_page_area.y += border->top;
2727         real_page_area.width -= (border->left + border->right);
2728         real_page_area.height -= (border->top + border->bottom);
2729         *page_ready = TRUE;
2730
2731         ev_document_misc_paint_one_page (GTK_WIDGET(view)->window,
2732                                          GTK_WIDGET (view),
2733                                          page_area, border,
2734                                          page == current_page);
2735
2736         if (gdk_rectangle_intersect (&real_page_area, expose_area, &overlap)) {
2737                 GdkPixbuf *selection_pixbuf = NULL;
2738                 GdkPixbuf *scaled_image;
2739                 GdkPixbuf *scaled_selection;
2740
2741                 current_pixbuf = ev_pixbuf_cache_get_pixbuf (view->pixbuf_cache, page);
2742
2743                 /* Get the selection pixbuf iff we have something to draw */
2744                 if (current_pixbuf && view->selection_mode == EV_VIEW_SELECTION_TEXT && selection)
2745                         selection_pixbuf = ev_pixbuf_cache_get_selection_pixbuf (view->pixbuf_cache,
2746                                                                                  page,
2747                                                                                  view->scale,
2748                                                                                  NULL);
2749
2750                 if (current_pixbuf == NULL)
2751                         scaled_image = NULL;
2752                 else if (width == gdk_pixbuf_get_width (current_pixbuf) &&
2753                          height == gdk_pixbuf_get_height (current_pixbuf))
2754                         scaled_image = g_object_ref (current_pixbuf);
2755                 else
2756                         /* FIXME: We don't want to scale the whole area, just the right
2757                          * area of it */
2758                         scaled_image = gdk_pixbuf_scale_simple (current_pixbuf,
2759                                                                 width, height,
2760                                                                 GDK_INTERP_NEAREST);
2761
2762                 if (selection_pixbuf == NULL)
2763                         scaled_selection = NULL;
2764                 else if (width == gdk_pixbuf_get_width (selection_pixbuf) &&
2765                          height == gdk_pixbuf_get_height (selection_pixbuf))
2766                         scaled_selection = g_object_ref (selection_pixbuf);
2767                 else
2768                         /* FIXME: We don't want to scale the whole area, just the right
2769                          * area of it */
2770                         scaled_selection = gdk_pixbuf_scale_simple (selection_pixbuf,
2771                                                                     width, height,
2772                                                                     GDK_INTERP_NEAREST);
2773
2774                 if (scaled_image) {
2775                         gdk_draw_pixbuf (GTK_WIDGET(view)->window,
2776                                          GTK_WIDGET (view)->style->fg_gc[GTK_STATE_NORMAL],
2777                                          scaled_image,
2778                                          overlap.x - real_page_area.x,
2779                                          overlap.y - real_page_area.y,
2780                                          overlap.x, overlap.y,
2781                                          overlap.width, overlap.height,
2782                                          GDK_RGB_DITHER_NORMAL,
2783                                          0, 0);
2784                         g_object_unref (scaled_image);
2785                 } else {
2786                         draw_loading_text (view,
2787                                            &real_page_area,
2788                                            expose_area);
2789                         *page_ready = FALSE;
2790                 }
2791
2792                 if (scaled_selection) {
2793                         gdk_draw_pixbuf (GTK_WIDGET(view)->window,
2794                                          GTK_WIDGET (view)->style->fg_gc[GTK_STATE_NORMAL],
2795                                          scaled_selection,
2796                                          overlap.x - real_page_area.x,
2797                                          overlap.y - real_page_area.y,
2798                                          overlap.x, overlap.y,
2799                                          overlap.width, overlap.height,
2800                                          GDK_RGB_DITHER_NORMAL,
2801                                          0, 0);
2802                         g_object_unref (scaled_selection);
2803                 }
2804         }
2805 }
2806
2807 /*** GObject functions ***/
2808
2809 static void
2810 ev_view_finalize (GObject *object)
2811 {
2812         EvView *view = EV_VIEW (object);
2813
2814         LOG ("Finalize");
2815
2816         g_free (view->status);
2817         g_free (view->find_status);
2818
2819         clear_selection (view);
2820
2821         G_OBJECT_CLASS (ev_view_parent_class)->finalize (object);
2822 }
2823
2824 static void
2825 ev_view_destroy (GtkObject *object)
2826 {
2827         EvView *view = EV_VIEW (object);
2828
2829         if (view->document) {
2830                 g_object_unref (view->document);
2831                 view->document = NULL;
2832         }
2833
2834         if (view->pixbuf_cache) {
2835                 g_object_unref (view->pixbuf_cache);
2836                 view->pixbuf_cache = NULL;
2837         }
2838
2839         if (view->link_tooltip) {
2840                 gtk_widget_destroy (view->link_tooltip);
2841                 view->link_tooltip = NULL;
2842         }
2843
2844         if (view->goto_window) {
2845                 gtk_widget_destroy (view->goto_window);
2846                 view->goto_window = NULL;
2847                 view->goto_entry = NULL;
2848         }
2849
2850         if (view->selection_scroll_id) {
2851             g_source_remove (view->selection_scroll_id);
2852             view->selection_scroll_id = 0;
2853         }
2854
2855         if (view->selection_update_id) {
2856             g_source_remove (view->selection_update_id);
2857             view->selection_update_id = 0;
2858         }
2859
2860         ev_view_presentation_transition_stop (view);
2861
2862         ev_view_set_scroll_adjustments (view, NULL, NULL);
2863
2864         GTK_OBJECT_CLASS (ev_view_parent_class)->destroy (object);
2865 }
2866
2867 static void
2868 ev_view_set_property (GObject      *object,
2869                       guint         prop_id,
2870                       const GValue *value,
2871                       GParamSpec   *pspec)
2872 {
2873         EvView *view = EV_VIEW (object);
2874
2875         switch (prop_id) {
2876                 case PROP_CONTINUOUS:
2877                         ev_view_set_continuous (view, g_value_get_boolean (value));
2878                         break;
2879                 case PROP_DUAL_PAGE:
2880                         ev_view_set_dual_page (view, g_value_get_boolean (value));
2881                         break;
2882                 case PROP_FULLSCREEN:
2883                         ev_view_set_fullscreen (view, g_value_get_boolean (value));
2884                         break;
2885                 case PROP_PRESENTATION:
2886                         ev_view_set_presentation (view, g_value_get_boolean (value));
2887                         break;
2888                 case PROP_SIZING_MODE:
2889                         ev_view_set_sizing_mode (view, g_value_get_enum (value));
2890                         break;
2891                 case PROP_ZOOM:
2892                         ev_view_set_zoom (view, g_value_get_double (value), FALSE);
2893                         break;
2894                 case PROP_ROTATION:
2895                         ev_view_set_rotation (view, g_value_get_int (value));
2896                         break;
2897                 default:
2898                         G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
2899         }
2900 }
2901
2902 static AtkObject *
2903 ev_view_get_accessible (GtkWidget *widget)
2904 {
2905         static gboolean first_time = TRUE;
2906
2907         if (first_time) {
2908                 AtkObjectFactory *factory;
2909                 AtkRegistry *registry;
2910                 GType derived_type;
2911                 GType derived_atk_type;
2912
2913                 /*
2914                  * Figure out whether accessibility is enabled by looking at the
2915                  * type of the accessible object which would be created for
2916                  * the parent type of EvView.
2917                  */
2918                 derived_type = g_type_parent (EV_TYPE_VIEW);
2919
2920                 registry = atk_get_default_registry ();
2921                 factory = atk_registry_get_factory (registry,
2922                                                     derived_type);
2923                 derived_atk_type = atk_object_factory_get_accessible_type (factory);
2924                 if (g_type_is_a (derived_atk_type, GTK_TYPE_ACCESSIBLE))
2925                         atk_registry_set_factory_type (registry,
2926                                                        EV_TYPE_VIEW,
2927                                                        ev_view_accessible_factory_get_type ());
2928                 first_time = FALSE;
2929         }
2930         return GTK_WIDGET_CLASS (ev_view_parent_class)->get_accessible (widget);
2931 }
2932
2933 static void
2934 ev_view_get_property (GObject *object,
2935                       guint prop_id,
2936                       GValue *value,
2937                       GParamSpec *pspec)
2938 {
2939         EvView *view = EV_VIEW (object);
2940
2941         switch (prop_id) {
2942                 case PROP_STATUS:
2943                         g_value_set_string (value, view->status);
2944                         break;
2945                 case PROP_FIND_STATUS:
2946                         g_value_set_string (value, view->status);
2947                         break;
2948                 case PROP_CONTINUOUS:
2949                         g_value_set_boolean (value, view->continuous);
2950                         break;
2951                 case PROP_DUAL_PAGE:
2952                         g_value_set_boolean (value, view->dual_page);
2953                         break;
2954                 case PROP_FULLSCREEN:
2955                         g_value_set_boolean (value, view->fullscreen);
2956                         break;
2957                 case PROP_PRESENTATION:
2958                         g_value_set_boolean (value, view->presentation);
2959                         break;
2960                 case PROP_SIZING_MODE:
2961                         g_value_set_enum (value, view->sizing_mode);
2962                         break;
2963                 case PROP_ZOOM:
2964                         g_value_set_double (value, view->scale);
2965                         break;
2966                 case PROP_ROTATION:
2967                         g_value_set_int (value, view->rotation);
2968                         break;
2969                 case PROP_HAS_SELECTION:
2970                         g_value_set_boolean (value,
2971                                              view->selection_info.selections != NULL);
2972                         break;
2973                 default:
2974                         G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
2975         }
2976 }
2977
2978 static void
2979 ev_view_class_init (EvViewClass *class)
2980 {
2981         GObjectClass *object_class = G_OBJECT_CLASS (class);
2982         GtkObjectClass *gtk_object_class = GTK_OBJECT_CLASS (class);
2983         GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
2984         GtkBindingSet *binding_set;
2985
2986         object_class->finalize = ev_view_finalize;
2987         object_class->set_property = ev_view_set_property;
2988         object_class->get_property = ev_view_get_property;
2989
2990         widget_class->expose_event = ev_view_expose_event;
2991         widget_class->button_press_event = ev_view_button_press_event;
2992         widget_class->motion_notify_event = ev_view_motion_notify_event;
2993         widget_class->button_release_event = ev_view_button_release_event;
2994         widget_class->key_press_event = ev_view_key_press_event;
2995         widget_class->focus_in_event = ev_view_focus_in;
2996         widget_class->focus_out_event = ev_view_focus_out;
2997         widget_class->get_accessible = ev_view_get_accessible;
2998         widget_class->size_request = ev_view_size_request;
2999         widget_class->size_allocate = ev_view_size_allocate;
3000         widget_class->realize = ev_view_realize;
3001         widget_class->scroll_event = ev_view_scroll_event;
3002         widget_class->enter_notify_event = ev_view_enter_notify_event;
3003         widget_class->leave_notify_event = ev_view_leave_notify_event;
3004         widget_class->style_set = ev_view_style_set;
3005         widget_class->drag_data_get = ev_view_drag_data_get;
3006         widget_class->drag_data_received = ev_view_drag_data_received;
3007         widget_class->popup_menu = ev_view_popup_menu;
3008         gtk_object_class->destroy = ev_view_destroy;
3009
3010         class->set_scroll_adjustments = ev_view_set_scroll_adjustments;
3011         class->binding_activated = ev_view_scroll;
3012
3013         widget_class->set_scroll_adjustments_signal =
3014             g_signal_new ("set-scroll-adjustments",
3015                           G_OBJECT_CLASS_TYPE (object_class),
3016                           G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
3017                           G_STRUCT_OFFSET (EvViewClass, set_scroll_adjustments),
3018                           NULL, NULL,
3019                           ev_marshal_VOID__OBJECT_OBJECT,
3020                           G_TYPE_NONE, 2,
3021                           GTK_TYPE_ADJUSTMENT,
3022                           GTK_TYPE_ADJUSTMENT);
3023
3024         signals[SIGNAL_BINDING_ACTIVATED] = g_signal_new ("binding_activated",
3025                          G_TYPE_FROM_CLASS (object_class),
3026                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
3027                          G_STRUCT_OFFSET (EvViewClass, binding_activated),
3028                          NULL, NULL,
3029                          ev_marshal_VOID__ENUM_BOOLEAN,
3030                          G_TYPE_NONE, 2,
3031                          GTK_TYPE_SCROLL_TYPE,
3032                          G_TYPE_BOOLEAN);
3033
3034         signals[SIGNAL_ZOOM_INVALID] = g_signal_new ("zoom-invalid",
3035                          G_TYPE_FROM_CLASS (object_class),
3036                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
3037                          G_STRUCT_OFFSET (EvViewClass, zoom_invalid),
3038                          NULL, NULL,
3039                          ev_marshal_VOID__VOID,
3040                          G_TYPE_NONE, 0, G_TYPE_NONE);
3041         signals[SIGNAL_EXTERNAL_LINK] = g_signal_new ("external-link",
3042                          G_TYPE_FROM_CLASS (object_class),
3043                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
3044                          G_STRUCT_OFFSET (EvViewClass, external_link),
3045                          NULL, NULL,
3046                          g_cclosure_marshal_VOID__OBJECT,
3047                          G_TYPE_NONE, 1,
3048                          G_TYPE_OBJECT);
3049         signals[SIGNAL_POPUP_MENU] = g_signal_new ("popup",
3050                          G_TYPE_FROM_CLASS (object_class),
3051                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
3052                          G_STRUCT_OFFSET (EvViewClass, popup_menu),
3053                          NULL, NULL,
3054                          g_cclosure_marshal_VOID__OBJECT,
3055                          G_TYPE_NONE, 1,
3056                          G_TYPE_OBJECT);
3057
3058         g_object_class_install_property (object_class,
3059                                          PROP_STATUS,
3060                                          g_param_spec_string ("status",
3061                                                               "Status Message",
3062                                                               "The status message",
3063                                                               NULL,
3064                                                               G_PARAM_READABLE));
3065
3066         g_object_class_install_property (object_class,
3067                                          PROP_FIND_STATUS,
3068                                          g_param_spec_string ("find-status",
3069                                                               "Find Status Message",
3070                                                               "The find status message",
3071                                                               NULL,
3072                                                               G_PARAM_READABLE));
3073
3074         g_object_class_install_property (object_class,
3075                                          PROP_CONTINUOUS,
3076                                          g_param_spec_boolean ("continuous",
3077                                                                "Continuous",
3078                                                                "Continuous scrolling mode",
3079                                                                TRUE,
3080                                                                G_PARAM_READWRITE));
3081
3082         g_object_class_install_property (object_class,
3083                                          PROP_DUAL_PAGE,
3084                                          g_param_spec_boolean ("dual-page",
3085                                                                "Dual Page",
3086                                                                "Two pages visible at once",
3087                                                                FALSE,
3088                                                                G_PARAM_READWRITE));
3089         g_object_class_install_property (object_class,
3090                                          PROP_FULLSCREEN,
3091                                          g_param_spec_boolean ("fullscreen",
3092                                                                "Full Screen",
3093                                                                "Draw page in a fullscreen fashion",
3094                                                                FALSE,
3095                                                                G_PARAM_READWRITE));
3096         g_object_class_install_property (object_class,
3097                                          PROP_PRESENTATION,
3098                                          g_param_spec_boolean ("presentation",
3099                                                                "Presentation",
3100                                                                "Draw page in presentation mode",
3101                                                                TRUE,
3102                                                                G_PARAM_READWRITE));
3103
3104         g_object_class_install_property (object_class,
3105                                          PROP_SIZING_MODE,
3106                                          g_param_spec_enum ("sizing-mode",
3107                                                             "Sizing Mode",
3108                                                             "Sizing Mode",
3109                                                             EV_TYPE_SIZING_MODE,
3110                                                             EV_SIZING_FIT_WIDTH,
3111                                                             G_PARAM_READWRITE));
3112
3113         g_object_class_install_property (object_class,
3114                                          PROP_ZOOM,
3115                                          g_param_spec_double ("zoom",
3116                                                               "Zoom factor",
3117                                                                "Zoom factor",
3118                                                                MIN_SCALE,
3119                                                                MAX_SCALE,
3120                                                                1.0,
3121                                                                G_PARAM_READWRITE));
3122         g_object_class_install_property (object_class,
3123                                          PROP_ROTATION,
3124                                          g_param_spec_double ("rotation",
3125                                                               "Rotation",
3126                                                                "Rotation",
3127                                                                0,
3128                                                                360,
3129                                                                0,
3130                                                                G_PARAM_READWRITE));
3131         g_object_class_install_property (object_class,
3132                                          PROP_HAS_SELECTION,
3133                                          g_param_spec_boolean ("has-selection",
3134                                                                "Has selection",
3135                                                                "The view has selections",
3136                                                                FALSE,
3137                                                                G_PARAM_READABLE));
3138
3139         binding_set = gtk_binding_set_by_class (class);
3140
3141         add_scroll_binding_keypad (binding_set, GDK_Left,  0, EV_SCROLL_STEP_BACKWARD, TRUE);
3142         add_scroll_binding_keypad (binding_set, GDK_Right, 0, EV_SCROLL_STEP_FORWARD,  TRUE);
3143         add_scroll_binding_keypad (binding_set, GDK_Left,  GDK_MOD1_MASK, EV_SCROLL_STEP_DOWN, TRUE);
3144         add_scroll_binding_keypad (binding_set, GDK_Right, GDK_MOD1_MASK, EV_SCROLL_STEP_UP,  TRUE);
3145         add_scroll_binding_keypad (binding_set, GDK_Up,    0, EV_SCROLL_STEP_BACKWARD, FALSE);
3146         add_scroll_binding_keypad (binding_set, GDK_Down,  0, EV_SCROLL_STEP_FORWARD,  FALSE);
3147         add_scroll_binding_keypad (binding_set, GDK_Up,    GDK_MOD1_MASK, EV_SCROLL_STEP_DOWN, FALSE);
3148         add_scroll_binding_keypad (binding_set, GDK_Down,  GDK_MOD1_MASK, EV_SCROLL_STEP_UP,  FALSE);
3149 }
3150
3151 static void
3152 ev_view_init (EvView *view)
3153 {
3154         GTK_WIDGET_SET_FLAGS (view, GTK_CAN_FOCUS);
3155
3156         view->spacing = 5;
3157         view->scale = 1.0;
3158         view->current_page = 0;
3159         view->pressed_button = -1;
3160         view->cursor = EV_VIEW_CURSOR_NORMAL;
3161         view->drag_info.in_drag = FALSE;
3162         view->selection_info.selections = NULL;
3163         view->selection_info.in_selection = FALSE;
3164         view->selection_info.in_drag = FALSE;
3165         view->selection_mode = EV_VIEW_SELECTION_TEXT;
3166         view->continuous = TRUE;
3167         view->dual_page = FALSE;
3168         view->presentation = FALSE;
3169         view->presentation_state = EV_PRESENTATION_NORMAL;
3170         view->fullscreen = FALSE;
3171         view->sizing_mode = EV_SIZING_FIT_WIDTH;
3172         view->pending_scroll = SCROLL_TO_KEEP_POSITION;
3173         view->jump_to_find_result = TRUE;
3174
3175         gtk_drag_dest_set (GTK_WIDGET (view),
3176                            GTK_DEST_DEFAULT_ALL,
3177                            view_drop_targets,
3178                            G_N_ELEMENTS (view_drop_targets),
3179                            GDK_ACTION_COPY);
3180 }
3181
3182 /*** Callbacks ***/
3183
3184 static void
3185 find_changed_cb (EvDocument *document, int page, EvView *view)
3186 {
3187         double percent;
3188         int n_pages;
3189
3190         percent = ev_document_find_get_progress
3191                         (EV_DOCUMENT_FIND (view->document));
3192         n_pages = ev_page_cache_get_n_pages (view->page_cache);
3193
3194         if (view->jump_to_find_result == TRUE) {
3195                 jump_to_find_page (view, EV_VIEW_FIND_NEXT, 0);
3196                 jump_to_find_result (view);
3197         }
3198         update_find_status_message (view, percent * n_pages >= n_pages - 1 );
3199         if (view->current_page == page)
3200                 gtk_widget_queue_draw (GTK_WIDGET (view));
3201 }
3202
3203 static void
3204 job_finished_cb (EvPixbufCache *pixbuf_cache,
3205                  EvView        *view)
3206 {
3207         gtk_widget_queue_draw (GTK_WIDGET (view));
3208 }
3209
3210 static void
3211 page_changed_cb (EvPageCache *page_cache,
3212                  int          new_page,
3213                  EvView      *view)
3214 {
3215         if (view->current_page != new_page) {
3216                 view->current_page = new_page;
3217                 view->pending_scroll = SCROLL_TO_PAGE_POSITION;
3218                 if (view->presentation)
3219                         ev_view_presentation_transition_start (view);
3220                 gtk_widget_queue_resize (GTK_WIDGET (view));
3221         } else {
3222                 gtk_widget_queue_draw (GTK_WIDGET (view));
3223         }
3224
3225         if (EV_IS_DOCUMENT_FIND (view->document)) {
3226                 view->find_result = 0;
3227                 update_find_status_message (view, TRUE);
3228         }
3229 }
3230
3231 static void on_adjustment_value_changed (GtkAdjustment  *adjustment,
3232                                          EvView *view)
3233 {
3234         int dx = 0, dy = 0;
3235
3236         if (! GTK_WIDGET_REALIZED (view))
3237                 return;
3238
3239         if (view->hadjustment) {
3240                 dx = view->scroll_x - (int) view->hadjustment->value;
3241                 view->scroll_x = (int) view->hadjustment->value;
3242         } else {
3243                 view->scroll_x = 0;
3244         }
3245
3246         if (view->vadjustment) {
3247                 dy = view->scroll_y - (int) view->vadjustment->value;
3248                 view->scroll_y = (int) view->vadjustment->value;
3249         } else {
3250                 view->scroll_y = 0;
3251         }
3252
3253
3254         if (view->pending_resize)
3255                 gtk_widget_queue_draw (GTK_WIDGET (view));
3256         else
3257                 gdk_window_scroll (GTK_WIDGET (view)->window, dx, dy);
3258
3259
3260         if (view->document)
3261                 view_update_range_and_current_page (view);
3262 }
3263
3264 GtkWidget*
3265 ev_view_new (void)
3266 {
3267         GtkWidget *view;
3268
3269         view = g_object_new (EV_TYPE_VIEW, NULL);
3270
3271         return view;
3272 }
3273
3274 static void
3275 setup_caches (EvView *view)
3276 {
3277         view->page_cache = ev_page_cache_get (view->document);
3278         g_signal_connect (view->page_cache, "page-changed", G_CALLBACK (page_changed_cb), view);
3279         view->pixbuf_cache = ev_pixbuf_cache_new (GTK_WIDGET (view), view->document);
3280         g_signal_connect (view->pixbuf_cache, "job-finished", G_CALLBACK (job_finished_cb), view);
3281 }
3282
3283 static void
3284 clear_caches (EvView *view)
3285 {
3286         if (view->pixbuf_cache) {
3287                 g_object_unref (view->pixbuf_cache);
3288                 view->pixbuf_cache = NULL;
3289         }
3290
3291         if (view->page_cache) {
3292                 view->page_cache = NULL;
3293         }
3294 }
3295
3296 void
3297 ev_view_set_loading (EvView       *view,
3298                      gboolean      loading)
3299 {
3300         view->loading = loading;
3301         gtk_widget_queue_draw (GTK_WIDGET (view));
3302 }
3303
3304 void
3305 ev_view_set_document (EvView     *view,
3306                       EvDocument *document)
3307 {
3308         g_return_if_fail (EV_IS_VIEW (view));
3309
3310         view->loading = FALSE;
3311
3312         if (document != view->document) {
3313                 clear_caches (view);
3314
3315                 if (view->document) {
3316                         g_signal_handlers_disconnect_by_func (view->document,
3317                                                               find_changed_cb,
3318                                                               view);
3319                         g_object_unref (view->document);
3320                         view->page_cache = NULL;
3321
3322                 }
3323
3324                 view->document = document;
3325                 view->find_result = 0;
3326
3327                 if (view->document) {
3328                         g_object_ref (view->document);
3329                         if (EV_IS_DOCUMENT_FIND (view->document)) {
3330                                 g_signal_connect (view->document,
3331                                                   "find_changed",
3332                                                   G_CALLBACK (find_changed_cb),
3333                                                   view);
3334                         }
3335
3336                         setup_caches (view);
3337                 }
3338
3339                 gtk_widget_queue_resize (GTK_WIDGET (view));
3340         }
3341 }
3342
3343 /*** Zoom and sizing mode ***/
3344
3345 #define EPSILON 0.0000001
3346 void
3347 ev_view_set_zoom (EvView   *view,
3348                   double    factor,
3349                   gboolean  relative)
3350 {
3351         double scale;
3352
3353         if (relative)
3354                 scale = view->scale * factor;
3355         else
3356                 scale = factor;
3357
3358         scale = CLAMP (scale, MIN_SCALE, MAX_SCALE);
3359
3360         if (ABS (view->scale - scale) < EPSILON)
3361                 return;
3362
3363         view->scale = scale;
3364         view->pending_resize = TRUE;
3365
3366         gtk_widget_queue_resize (GTK_WIDGET (view));
3367
3368         g_object_notify (G_OBJECT (view), "zoom");
3369 }
3370
3371 double
3372 ev_view_get_zoom (EvView *view)
3373 {
3374         return view->scale;
3375 }
3376
3377 gboolean
3378 ev_view_get_continuous (EvView *view)
3379 {
3380         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
3381
3382         return view->continuous;
3383 }
3384
3385 void
3386 ev_view_set_continuous (EvView   *view,
3387                         gboolean  continuous)
3388 {
3389         g_return_if_fail (EV_IS_VIEW (view));
3390
3391         continuous = continuous != FALSE;
3392
3393         if (view->continuous != continuous) {
3394                 view->continuous = continuous;
3395                 view->pending_scroll = SCROLL_TO_PAGE_POSITION;
3396                 gtk_widget_queue_resize (GTK_WIDGET (view));
3397         }
3398
3399         g_object_notify (G_OBJECT (view), "continuous");
3400 }
3401
3402 gboolean
3403 ev_view_get_dual_page (EvView *view)
3404 {
3405         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
3406
3407         return view->dual_page;
3408 }
3409
3410 void
3411 ev_view_set_dual_page (EvView   *view,
3412                        gboolean  dual_page)
3413 {
3414         g_return_if_fail (EV_IS_VIEW (view));
3415
3416         dual_page = dual_page != FALSE;
3417
3418         if (view->dual_page == dual_page)
3419                 return;
3420
3421         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
3422         view->dual_page = dual_page;
3423         /* FIXME: if we're keeping the pixbuf cache around, we should extend the
3424          * preload_cache_size to be 2 if dual_page is set.
3425          */
3426         gtk_widget_queue_resize (GTK_WIDGET (view));
3427
3428         g_object_notify (G_OBJECT (view), "dual-page");
3429 }
3430
3431 void
3432 ev_view_set_fullscreen (EvView   *view,
3433                          gboolean  fullscreen)
3434 {
3435         g_return_if_fail (EV_IS_VIEW (view));
3436
3437         fullscreen = fullscreen != FALSE;
3438
3439         if (view->fullscreen == fullscreen)
3440                 return;
3441
3442         view->fullscreen = fullscreen;
3443         gtk_widget_queue_resize (GTK_WIDGET (view));
3444
3445         g_object_notify (G_OBJECT (view), "fullscreen");
3446 }
3447
3448 gboolean
3449 ev_view_get_fullscreen (EvView *view)
3450 {
3451         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
3452
3453         return view->fullscreen;
3454 }
3455
3456 void
3457 ev_view_set_presentation (EvView   *view,
3458                           gboolean  presentation)
3459 {
3460         g_return_if_fail (EV_IS_VIEW (view));
3461
3462         presentation = presentation != FALSE;
3463
3464         if (view->presentation == presentation)
3465                 return;
3466
3467         if (!presentation)
3468                 view->presentation_state = EV_PRESENTATION_NORMAL;
3469
3470         view->presentation = presentation;
3471         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
3472
3473         if (presentation) {
3474                 view->sizing_mode_saved = view->sizing_mode;
3475                 view->scale_saved = view->scale;
3476                 ev_view_set_sizing_mode (view, EV_SIZING_BEST_FIT);
3477         } else {
3478                 ev_view_set_sizing_mode (view, view->sizing_mode_saved);
3479                 ev_view_set_zoom (view, view->scale_saved, FALSE);
3480         }
3481
3482         gtk_widget_queue_resize (GTK_WIDGET (view));
3483
3484         if (presentation)
3485                 ev_view_presentation_transition_start (view);
3486         else
3487                 ev_view_presentation_transition_stop (view);
3488
3489         if (GTK_WIDGET_REALIZED (view)) {
3490                 if (view->presentation)
3491                         gdk_window_set_background (GTK_WIDGET(view)->window,
3492                                                    &GTK_WIDGET (view)->style->black);
3493                 else
3494                         gdk_window_set_background (GTK_WIDGET(view)->window,
3495                                                    &GTK_WIDGET (view)->style->mid [GTK_STATE_NORMAL]);
3496         }
3497
3498         g_object_notify (G_OBJECT (view), "presentation");
3499 }
3500
3501 gboolean
3502 ev_view_get_presentation (EvView *view)
3503 {
3504         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
3505
3506         return view->presentation;
3507 }
3508
3509 static gboolean
3510 transition_next_page (EvView *view)
3511 {
3512         ev_view_next_page (view);
3513
3514         return FALSE;
3515 }
3516
3517 static void
3518 ev_view_presentation_transition_stop (EvView *view)
3519 {
3520         if (view->trans_timeout_id > 0)
3521                 g_source_remove (view->trans_timeout_id);
3522         view->trans_timeout_id = 0;
3523 }
3524
3525 static void
3526 ev_view_presentation_transition_start (EvView *view)
3527 {
3528         gdouble duration;
3529
3530         if (!EV_IS_DOCUMENT_TRANSITION (view->document))
3531                 return;
3532
3533         ev_view_presentation_transition_stop (view);
3534
3535         duration = ev_document_transition_get_page_duration (EV_DOCUMENT_TRANSITION (view->document),
3536                                                              view->current_page);
3537         if (duration > 0)
3538                 view->trans_timeout_id = g_timeout_add (duration * 1000,
3539                                                         (GSourceFunc) transition_next_page,
3540                                                         view);
3541 }
3542
3543 void
3544 ev_view_set_sizing_mode (EvView       *view,
3545                          EvSizingMode  sizing_mode)
3546 {
3547         g_return_if_fail (EV_IS_VIEW (view));
3548
3549         if (view->sizing_mode == sizing_mode)
3550                 return;
3551
3552         view->sizing_mode = sizing_mode;
3553         gtk_widget_queue_resize (GTK_WIDGET (view));
3554
3555         g_object_notify (G_OBJECT (view), "sizing-mode");
3556 }
3557
3558 EvSizingMode
3559 ev_view_get_sizing_mode (EvView *view)
3560 {
3561         g_return_val_if_fail (EV_IS_VIEW (view), EV_SIZING_FREE);
3562
3563         return view->sizing_mode;
3564 }
3565
3566 gboolean
3567 ev_view_can_zoom_in (EvView *view)
3568 {
3569         return view->scale * ZOOM_IN_FACTOR <= MAX_SCALE;
3570 }
3571
3572 gboolean
3573 ev_view_can_zoom_out (EvView *view)
3574 {
3575         return view->scale * ZOOM_OUT_FACTOR >= MIN_SCALE;
3576 }
3577
3578 void
3579 ev_view_zoom_in (EvView *view)
3580 {
3581         g_return_if_fail (view->sizing_mode == EV_SIZING_FREE);
3582
3583         view->pending_scroll = SCROLL_TO_CENTER;
3584         ev_view_set_zoom (view, ZOOM_IN_FACTOR, TRUE);
3585 }
3586
3587 void
3588 ev_view_zoom_out (EvView *view)
3589 {
3590         g_return_if_fail (view->sizing_mode == EV_SIZING_FREE);
3591
3592         view->pending_scroll = SCROLL_TO_CENTER;
3593         ev_view_set_zoom (view, ZOOM_OUT_FACTOR, TRUE);
3594 }
3595
3596 void
3597 ev_view_rotate_right (EvView *view)
3598 {
3599         int rotation = view->rotation + 90;
3600
3601         if (rotation >= 360) {
3602                 rotation -= 360;
3603         }
3604
3605         ev_view_set_rotation (view, rotation);
3606 }
3607
3608 void
3609 ev_view_rotate_left (EvView *view)
3610 {
3611         int rotation = view->rotation - 90;
3612
3613         if (rotation < 0) {
3614                 rotation += 360;
3615         }
3616
3617         ev_view_set_rotation (view, rotation);
3618 }
3619
3620 void
3621 ev_view_set_rotation (EvView *view, int rotation)
3622 {
3623         view->rotation = rotation;
3624
3625         if (view->pixbuf_cache) {
3626                 ev_pixbuf_cache_clear (view->pixbuf_cache);
3627                 gtk_widget_queue_resize (GTK_WIDGET (view));
3628         }
3629
3630         if (rotation != 0)
3631                 clear_selection (view);
3632
3633         g_object_notify (G_OBJECT (view), "rotation");
3634 }
3635
3636 int
3637 ev_view_get_rotation (EvView *view)
3638 {
3639         return view->rotation;
3640 }
3641
3642 static double
3643 zoom_for_size_fit_width (int doc_width,
3644                          int doc_height,
3645                          int target_width,
3646                          int target_height,
3647                          int vsb_width)
3648 {
3649         double scale;
3650
3651         scale = (double)target_width / doc_width;
3652
3653         if (doc_height * scale > target_height)
3654                 scale = (double) (target_width - vsb_width) / doc_width;
3655
3656         return scale;
3657 }
3658
3659 static double
3660 zoom_for_size_fit_height (int doc_width,
3661                           int doc_height,
3662                           int target_width,
3663                           int target_height,
3664                           int vsb_height)
3665 {
3666         double scale;
3667
3668         scale = (double)target_height / doc_height;
3669
3670         if (doc_width * scale > target_width)
3671                 scale = (double) (target_height - vsb_height) / doc_height;
3672
3673         return scale;
3674 }
3675
3676 static double
3677 zoom_for_size_best_fit (int doc_width,
3678                         int doc_height,
3679                         int target_width,
3680                         int target_height,
3681                         int vsb_width,
3682                         int hsb_width)
3683 {
3684         double w_scale;
3685         double h_scale;
3686
3687         w_scale = (double)target_width / doc_width;
3688         h_scale = (double)target_height / doc_height;
3689
3690         if (doc_height * w_scale > target_height)
3691                 w_scale = (double) (target_width - vsb_width) / doc_width;
3692         if (doc_width * h_scale > target_width)
3693                 h_scale = (double) (target_height - hsb_width) / doc_height;
3694
3695         return MIN (w_scale, h_scale);
3696 }
3697
3698
3699 static void
3700 ev_view_zoom_for_size_presentation (EvView *view,
3701                                     int     width,
3702                                     int     height)
3703 {
3704         int doc_width, doc_height;
3705         gdouble scale;
3706
3707         ev_page_cache_get_size (view->page_cache,
3708                                 view->current_page,
3709                                 view->rotation,
3710                                 1.0,
3711                                 &doc_width,
3712                                 &doc_height);
3713         scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, 0, 0);
3714         ev_view_set_zoom (view, scale, FALSE);
3715 }
3716
3717 static void
3718 ev_view_zoom_for_size_continuous_and_dual_page (EvView *view,
3719                            int     width,
3720                            int     height,
3721                            int     vsb_width,
3722                            int     hsb_height)
3723 {
3724         int doc_width, doc_height;
3725         GtkBorder border;
3726         gdouble scale;
3727
3728         ev_page_cache_get_max_width (view->page_cache,
3729                                      view->rotation,
3730                                      1.0,
3731                                      &doc_width);
3732         ev_page_cache_get_max_height (view->page_cache,
3733                                       view->rotation,
3734                                       1.0,
3735                                       &doc_height);
3736         compute_border (view, doc_width, doc_height, &border);
3737
3738         doc_width = doc_width * 2;
3739         width -= (2 * (border.left + border.right) + 3 * view->spacing);
3740         height -= (border.top + border.bottom + 2 * view->spacing - 1);
3741
3742         /* FIXME: We really need to calculate the overall height here, not the
3743          * page height.  We assume there's always a vertical scrollbar for
3744          * now.  We need to fix this. */
3745         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
3746                 scale = zoom_for_size_fit_width (doc_width, doc_height, width - vsb_width, height, 0);
3747         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
3748                 scale = zoom_for_size_best_fit (doc_width, doc_height, width - vsb_width, height, 0, hsb_height);
3749         else
3750                 g_assert_not_reached ();
3751
3752         ev_view_set_zoom (view, scale, FALSE);
3753 }
3754
3755 static void
3756 ev_view_zoom_for_size_continuous (EvView *view,
3757                                   int     width,
3758                                   int     height,
3759                                   int     vsb_width,
3760                                   int     hsb_height)
3761 {
3762         int doc_width, doc_height;
3763         GtkBorder border;
3764         gdouble scale;
3765
3766         ev_page_cache_get_max_width (view->page_cache,
3767                                      view->rotation,
3768                                      1.0,
3769                                      &doc_width);
3770         ev_page_cache_get_max_height (view->page_cache,
3771                                       view->rotation,
3772                                       1.0,
3773                                       &doc_height);
3774         compute_border (view, doc_width, doc_height, &border);
3775
3776         width -= (border.left + border.right + 2 * view->spacing);
3777         height -= (border.top + border.bottom + 2 * view->spacing - 1);
3778
3779         /* FIXME: We really need to calculate the overall height here, not the
3780          * page height.  We assume there's always a vertical scrollbar for
3781          * now.  We need to fix this. */
3782         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
3783                 scale = zoom_for_size_fit_width (doc_width, doc_height, width - vsb_width, height, 0);
3784         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
3785                 scale = zoom_for_size_best_fit (doc_width, doc_height, width - vsb_width, height, 0, hsb_height);
3786         else
3787                 g_assert_not_reached ();
3788
3789         ev_view_set_zoom (view, scale, FALSE);
3790 }
3791
3792 static void
3793 ev_view_zoom_for_size_dual_page (EvView *view,
3794                                  int     width,
3795                                  int     height,
3796                                  int     vsb_width,
3797                                  int     hsb_height)
3798 {
3799         GtkBorder border;
3800         gint doc_width, doc_height;
3801         gdouble scale;
3802         gint other_page;
3803
3804         other_page = view->current_page ^ 1;
3805
3806         /* Find the largest of the two. */
3807         ev_page_cache_get_size (view->page_cache,
3808                                 view->current_page,
3809                                 view->rotation,
3810                                 1.0,
3811                                 &doc_width, &doc_height);
3812
3813         if (other_page < ev_page_cache_get_n_pages (view->page_cache)) {
3814                 gint width_2, height_2;
3815                 ev_page_cache_get_size (view->page_cache,
3816                                         other_page,
3817                                         view->rotation,
3818                                         1.0,
3819                                         &width_2, &height_2);
3820                 if (width_2 > doc_width)
3821                         doc_width = width_2;
3822                 if (height_2 > doc_height)
3823                         doc_height = height_2;
3824         }
3825         compute_border (view, doc_width, doc_height, &border);
3826
3827         doc_width = doc_width * 2;
3828         width -= ((border.left + border.right)* 2 + 3 * view->spacing);
3829         height -= (border.top + border.bottom + 2 * view->spacing);
3830
3831         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
3832                 scale = zoom_for_size_fit_width (doc_width, doc_height, width, height, vsb_width);
3833         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
3834                 scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, vsb_width, hsb_height);
3835         else
3836                 g_assert_not_reached ();
3837
3838         ev_view_set_zoom (view, scale, FALSE);
3839 }
3840
3841 static void
3842 ev_view_zoom_for_size_single_page (EvView *view,
3843                                    int     width,
3844                                    int     height,
3845                                    int     vsb_width,
3846                                    int     hsb_height)
3847 {
3848         int doc_width, doc_height;
3849         GtkBorder border;
3850         gdouble scale;
3851
3852         ev_page_cache_get_size (view->page_cache,
3853                                 view->current_page,
3854                                 view->rotation,
3855                                 1.0,
3856                                 &doc_width,
3857                                 &doc_height);
3858         /* Get an approximate border */
3859         compute_border (view, width, height, &border);
3860
3861         width -= (border.left + border.right + 2 * view->spacing);
3862         height -= (border.top + border.bottom + 2 * view->spacing);
3863
3864         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
3865                 scale = zoom_for_size_fit_width (doc_width, doc_height, width, height, vsb_width);
3866         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
3867                 scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, vsb_width, hsb_height);
3868         else
3869                 g_assert_not_reached ();
3870
3871         ev_view_set_zoom (view, scale, FALSE);
3872 }
3873
3874 void
3875 ev_view_set_zoom_for_size (EvView *view,
3876                            int     width,
3877                            int     height,
3878                            int     vsb_width,
3879                            int     hsb_height)
3880 {
3881         g_return_if_fail (view->sizing_mode == EV_SIZING_FIT_WIDTH ||
3882                           view->sizing_mode == EV_SIZING_BEST_FIT);
3883         g_return_if_fail (width >= 0);
3884         g_return_if_fail (height >= 0);
3885
3886         if (view->document == NULL)
3887                 return;
3888
3889         if (view->presentation)
3890                 ev_view_zoom_for_size_presentation (view, width, height);
3891         else if (view->continuous && view->dual_page)
3892                 ev_view_zoom_for_size_continuous_and_dual_page (view, width, height, vsb_width, hsb_height);
3893         else if (view->continuous)
3894                 ev_view_zoom_for_size_continuous (view, width, height, vsb_width, hsb_height);
3895         else if (view->dual_page)
3896                 ev_view_zoom_for_size_dual_page (view, width, height, vsb_width, hsb_height);
3897         else
3898                 ev_view_zoom_for_size_single_page (view, width, height, vsb_width, hsb_height);
3899 }
3900
3901 /*** Status text messages ***/
3902
3903 const char *
3904 ev_view_get_status (EvView *view)
3905 {
3906         g_return_val_if_fail (EV_IS_VIEW (view), NULL);
3907
3908         return view->status;
3909 }
3910
3911 static void
3912 ev_view_set_status (EvView *view, const char *message)
3913 {
3914         g_return_if_fail (EV_IS_VIEW (view));
3915
3916         if (message != view->status) {
3917                 g_free (view->status);
3918                 view->status = g_strdup (message);
3919                 g_object_notify (G_OBJECT (view), "status");
3920         }
3921 }
3922
3923 static void
3924 update_find_status_message (EvView *view, gboolean this_page)
3925 {
3926         char *message;
3927
3928         if (this_page) {
3929                 int results;
3930
3931                 results = ev_document_find_get_n_results
3932                                 (EV_DOCUMENT_FIND (view->document),
3933                                  view->current_page);
3934                 /* TRANS: Sometimes this could be better translated as
3935                    "%d hit(s) on this page".  Therefore this string
3936                    contains plural cases. */
3937                 message = g_strdup_printf (ngettext ("%d found on this page",
3938                                                      "%d found on this page",
3939                                                      results),
3940                                            results);
3941         } else {
3942                 double percent;
3943
3944                 percent = ev_document_find_get_progress
3945                                 (EV_DOCUMENT_FIND (view->document));
3946                 message = g_strdup_printf (_("%3d%% remaining to search"),
3947                                            (int) ((1.0 - percent) * 100));
3948
3949         }
3950         ev_view_set_find_status (view, message);
3951         g_free (message);
3952 }
3953
3954 const char *
3955 ev_view_get_find_status (EvView *view)
3956 {
3957         g_return_val_if_fail (EV_IS_VIEW (view), NULL);
3958
3959         return view->find_status;
3960 }
3961
3962 static void
3963 ev_view_set_find_status (EvView *view, const char *message)
3964 {
3965         g_return_if_fail (EV_IS_VIEW (view));
3966
3967         g_free (view->find_status);
3968         view->find_status = g_strdup (message);
3969         g_object_notify (G_OBJECT (view), "find-status");
3970 }
3971
3972 /*** Find ***/
3973
3974 static void
3975 jump_to_find_result (EvView *view)
3976 {
3977         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
3978         EvRectangle rect;
3979         GdkRectangle view_rect;
3980         int n_results;
3981         int page = view->current_page;
3982
3983         n_results = ev_document_find_get_n_results (find, page);
3984
3985         if (n_results > 0  && view->find_result < n_results) {
3986                 ev_document_find_get_result
3987                         (find, page, view->find_result, &rect);
3988
3989                 doc_rect_to_view_rect (view, page, &rect, &view_rect);
3990                 ensure_rectangle_is_visible (view, &view_rect);
3991         }
3992 }
3993
3994 /**
3995  * jump_to_find_page
3996  * @view: #EvView instance
3997  * @direction: Direction to look
3998  * @shift: Shift from current page
3999  *
4000  * Jumps to the first page that has occurences of searched word.
4001  * Uses a direction where to look and a shift from current page.
4002  *
4003  */
4004 static void
4005 jump_to_find_page (EvView *view, EvViewFindDirection direction, gint shift)
4006 {
4007         int n_pages, i;
4008
4009         n_pages = ev_page_cache_get_n_pages (view->page_cache);
4010
4011         for (i = 0; i < n_pages; i++) {
4012                 int has_results;
4013                 int page;
4014
4015                 if (direction == EV_VIEW_FIND_NEXT)
4016                         page = view->current_page + i;
4017                 else
4018                         page = view->current_page - i;
4019                 page += shift;
4020
4021                 if (page >= n_pages) {
4022                         page = page - n_pages;
4023                 }
4024                 if (page < 0)
4025                         page = page + n_pages;
4026
4027                 has_results = ev_document_find_page_has_results
4028                                 (EV_DOCUMENT_FIND (view->document), page);
4029                 if (has_results == -1) {
4030                         break;
4031                 } else if (has_results == 1) {
4032                         ev_page_cache_set_current_page (view->page_cache, page);
4033                         break;
4034                 }
4035         }
4036 }
4037
4038 gboolean
4039 ev_view_can_find_next (EvView *view)
4040 {
4041         if (EV_IS_DOCUMENT_FIND (view->document)) {
4042                 EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
4043                 int i, n_pages;
4044
4045                 n_pages = ev_page_cache_get_n_pages (view->page_cache);
4046                 for (i = 0; i < n_pages; i++) {
4047                         if (ev_document_find_get_n_results (find, i) > 0) {
4048                                 return TRUE;
4049                         }
4050                 }
4051         }
4052
4053         return FALSE;
4054 }
4055
4056 void
4057 ev_view_find_next (EvView *view)
4058 {
4059         int n_results, n_pages;
4060         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
4061
4062         n_results = ev_document_find_get_n_results (find, view->current_page);
4063
4064         n_pages = ev_page_cache_get_n_pages (view->page_cache);
4065
4066         view->find_result++;
4067
4068         if (view->find_result >= n_results) {
4069
4070                 view->find_result = 0;
4071                 jump_to_find_page (view, EV_VIEW_FIND_NEXT, 1);
4072                 jump_to_find_result (view);
4073         } else {
4074                 jump_to_find_result (view);
4075                 gtk_widget_queue_draw (GTK_WIDGET (view));
4076         }
4077 }
4078
4079 gboolean
4080 ev_view_can_find_previous (EvView *view)
4081 {
4082         if (EV_IS_DOCUMENT_FIND (view->document)) {
4083                 EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
4084                 int i, n_pages;
4085
4086                 n_pages = ev_page_cache_get_n_pages (view->page_cache);
4087                 for (i = n_pages - 1; i >= 0; i--) {
4088                         if (ev_document_find_get_n_results (find, i) > 0) {
4089                                 return TRUE;
4090                         }
4091                 }
4092         }
4093
4094         return FALSE;
4095 }
4096 void
4097 ev_view_find_previous (EvView *view)
4098 {
4099         int n_results, n_pages;
4100         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
4101         EvPageCache *page_cache;
4102
4103         page_cache = ev_page_cache_get (view->document);
4104
4105         n_results = ev_document_find_get_n_results (find, view->current_page);
4106
4107         n_pages = ev_page_cache_get_n_pages (page_cache);
4108
4109         view->find_result--;
4110
4111         if (view->find_result < 0) {
4112
4113                 jump_to_find_page (view, EV_VIEW_FIND_PREV, -1);
4114                 view->find_result = ev_document_find_get_n_results (find, view->current_page) - 1;
4115                 jump_to_find_result (view);
4116         } else {
4117                 jump_to_find_result (view);
4118                 gtk_widget_queue_draw (GTK_WIDGET (view));
4119         }
4120 }
4121
4122 void ev_view_search_changed (EvView *view)
4123 {
4124         /* search string has changed, focus on new search result */
4125         view->jump_to_find_result = TRUE;
4126 }
4127
4128 /*** Selections ***/
4129
4130 /* compute_new_selection_rect/text calculates the area currently selected by
4131  * view_rect.  each handles a different mode;
4132  */
4133 static GList *
4134 compute_new_selection_rect (EvView       *view,
4135                             GdkPoint     *start,
4136                             GdkPoint     *stop)
4137 {
4138         GdkRectangle view_rect;
4139         int n_pages, i;
4140         GList *list = NULL;
4141
4142         g_assert (view->selection_mode == EV_VIEW_SELECTION_RECTANGLE);
4143
4144         view_rect.x = MIN (start->x, stop->x);
4145         view_rect.y = MIN (start->y, stop->y);
4146         view_rect.width = MAX (start->x, stop->x) - view_rect.x;
4147         view_rect.width = MAX (start->y, stop->y) - view_rect.y;
4148
4149         n_pages = ev_page_cache_get_n_pages (view->page_cache);
4150
4151         for (i = 0; i < n_pages; i++) {
4152                 GdkRectangle page_area;
4153                 GtkBorder border;
4154
4155                 if (get_page_extents (view, i, &page_area, &border)) {
4156                         GdkRectangle overlap;
4157
4158                         if (gdk_rectangle_intersect (&page_area, &view_rect, &overlap)) {
4159                                 EvViewSelection *selection;
4160
4161                                 selection = g_new0 (EvViewSelection, 1);
4162                                 selection->page = i;
4163                                 view_rect_to_doc_rect (view, &overlap, &page_area,
4164                                                        &(selection->rect));
4165
4166                                 list = g_list_append (list, selection);
4167                         }
4168                 }
4169         }
4170
4171         return list;
4172 }
4173
4174 static gboolean
4175 gdk_rectangle_point_in (GdkRectangle *rectangle,
4176                         GdkPoint     *point)
4177 {
4178         return rectangle->x <= point->x &&
4179                 rectangle->y <= point->y &&
4180                 point->x < rectangle->x + rectangle->width &&
4181                 point->y < rectangle->y + rectangle->height;
4182 }
4183
4184 static GList *
4185 compute_new_selection_text (EvView   *view,
4186                             GdkPoint *start,
4187                             GdkPoint *stop)
4188 {
4189         int n_pages, i, first, last;
4190         GList *list = NULL;
4191         EvViewSelection *selection;
4192         gint width, height;
4193         int start_page, end_page;
4194
4195         g_assert (view->selection_mode == EV_VIEW_SELECTION_TEXT);
4196
4197         n_pages = ev_page_cache_get_n_pages (view->page_cache);
4198
4199         /* First figure out the range of pages the selection
4200          * affects. */
4201         first = n_pages;
4202         last = 0;
4203         if (view->continuous) {
4204                 start_page = 0;
4205                 end_page = n_pages;
4206         } else if (view->dual_page) {
4207                 start_page = view->start_page;
4208                 end_page = view->end_page + 1;
4209         } else {
4210                 start_page = view->current_page;
4211                 end_page = view->current_page + 1;
4212         }
4213
4214         for (i = start_page; i < end_page; i++) {
4215                 GdkRectangle page_area;
4216                 GtkBorder border;
4217
4218                 get_page_extents (view, i, &page_area, &border);
4219                 if (gdk_rectangle_point_in (&page_area, start) ||
4220                     gdk_rectangle_point_in (&page_area, stop)) {
4221                         if (first == n_pages)
4222                                 first = i;
4223                         last = i;
4224                 }
4225
4226         }
4227
4228
4229
4230         /* Now create a list of EvViewSelection's for the affected
4231          * pages.  This could be an empty list, a list of just one
4232          * page or a number of pages.*/
4233         for (i = first; i < last + 1; i++) {
4234                 GdkRectangle page_area;
4235                 GtkBorder border;
4236                 GdkPoint *point;
4237
4238                 ev_page_cache_get_size (view->page_cache, i,
4239                                         view->rotation,
4240                                         1.0, &width, &height);
4241
4242                 selection = g_new0 (EvViewSelection, 1);
4243                 selection->page = i;
4244                 selection->rect.x1 = selection->rect.y1 = 0;
4245                 selection->rect.x2 = width;
4246                 selection->rect.y2 = height;
4247
4248                 get_page_extents (view, i, &page_area, &border);
4249
4250                 if (gdk_rectangle_point_in (&page_area, start))
4251                         point = start;
4252                 else
4253                         point = stop;
4254
4255                 if (i == first)
4256                         view_point_to_doc_point (view, point, &page_area,
4257                                                  &selection->rect.x1,
4258                                                  &selection->rect.y1);
4259
4260                 /* If the selection is contained within just one page,
4261                  * make sure we don't write 'start' into both points
4262                  * in selection->rect. */
4263                 if (first == last)
4264                         point = stop;
4265
4266                 if (i == last)
4267                         view_point_to_doc_point (view, point, &page_area,
4268                                                  &selection->rect.x2,
4269                                                  &selection->rect.y2);
4270
4271                 list = g_list_append (list, selection);
4272         }
4273
4274         return list;
4275 }
4276
4277 /* This function takes the newly calculated list, and figures out which regions
4278  * have changed.  It then queues a redraw approporiately.
4279  */
4280 static void
4281 merge_selection_region (EvView *view,
4282                         GList  *new_list)
4283 {
4284         GList *old_list;
4285         GList *new_list_ptr, *old_list_ptr;
4286
4287         /* Update the selection */
4288         old_list = ev_pixbuf_cache_get_selection_list (view->pixbuf_cache);
4289         g_list_foreach (view->selection_info.selections, (GFunc)selection_free, NULL);
4290         view->selection_info.selections = new_list;
4291         ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, new_list);
4292         g_object_notify (G_OBJECT (view), "has-selection");
4293
4294         new_list_ptr = new_list;
4295         old_list_ptr = old_list;
4296
4297         while (new_list_ptr || old_list_ptr) {
4298                 EvViewSelection *old_sel, *new_sel;
4299                 int cur_page;
4300                 GdkRegion *region = NULL;
4301
4302                 new_sel = (new_list_ptr) ? (new_list_ptr->data) : NULL;
4303                 old_sel = (old_list_ptr) ? (old_list_ptr->data) : NULL;
4304
4305                 /* Assume that the lists are in order, and we run through them
4306                  * comparing them, one page at a time.  We come out with the
4307                  * first page we see. */
4308                 if (new_sel && old_sel) {
4309                         if (new_sel->page < old_sel->page) {
4310                                 new_list_ptr = new_list_ptr->next;
4311                                 old_sel = NULL;
4312                         } else if (new_sel->page > old_sel->page) {
4313                                 old_list_ptr = old_list_ptr->next;
4314                                 new_sel = NULL;
4315                         } else {
4316                                 new_list_ptr = new_list_ptr->next;
4317                                 old_list_ptr = old_list_ptr->next;
4318                         }
4319                 } else if (new_sel) {
4320                         new_list_ptr = new_list_ptr->next;
4321                 } else if (old_sel) {
4322                         old_list_ptr = old_list_ptr->next;
4323                 }
4324
4325                 g_assert (new_sel || old_sel);
4326
4327                 /* is the page we're looking at on the screen?*/
4328                 cur_page = new_sel ? new_sel->page : old_sel->page;
4329                 if (cur_page < view->start_page || cur_page > view->end_page)
4330                         continue;
4331
4332                 /* seed the cache with a new page.  We are going to need the new
4333                  * region too. */
4334                 if (new_sel) {
4335                         GdkRegion *tmp_region = NULL;
4336                         ev_pixbuf_cache_get_selection_pixbuf (view->pixbuf_cache,
4337                                                               cur_page,
4338                                                               view->scale,
4339                                                               &tmp_region);
4340                         if (tmp_region) {
4341                                 new_sel->covered_region = gdk_region_copy (tmp_region);
4342                         }
4343                 }
4344
4345                 /* Now we figure out what needs redrawing */
4346                 if (old_sel && new_sel) {
4347                         if (old_sel->covered_region &&
4348                             new_sel->covered_region) {
4349                                 /* We only want to redraw the areas that have
4350                                  * changed, so we xor the old and new regions
4351                                  * and redraw if it's different */
4352                                 region = gdk_region_copy (old_sel->covered_region);
4353                                 gdk_region_xor (region, new_sel->covered_region);
4354                                 if (gdk_region_empty (region)) {
4355                                         gdk_region_destroy (region);
4356                                         region = NULL;
4357                                 }
4358                         } else if (old_sel->covered_region) {
4359                                 region = gdk_region_copy (old_sel->covered_region);
4360                         } else if (new_sel->covered_region) {
4361                                 region = gdk_region_copy (new_sel->covered_region);
4362                         }
4363                 } else if (old_sel && !new_sel) {
4364                         if (old_sel->covered_region && !gdk_region_empty (old_sel->covered_region)) {
4365                                 region = gdk_region_copy (old_sel->covered_region);
4366                         }
4367                 } else if (!old_sel && new_sel) {
4368                         if (new_sel->covered_region && !gdk_region_empty (new_sel->covered_region)) {
4369                                 region = gdk_region_copy (new_sel->covered_region);
4370                         }
4371                 } else {
4372                         g_assert_not_reached ();
4373                 }
4374
4375                 /* Redraw the damaged region! */
4376                 if (region) {
4377                         GdkRectangle page_area;
4378                         GtkBorder border;
4379
4380                         get_page_extents (view, cur_page, &page_area, &border);
4381                         gdk_region_offset (region,
4382                                            page_area.x + border.left - view->scroll_x,
4383                                            page_area.y + border.top - view->scroll_y);
4384                         gdk_window_invalidate_region (GTK_WIDGET (view)->window, region, TRUE);
4385                         gdk_region_destroy (region);
4386                 }
4387         }
4388
4389         /* Free the old list, now that we're done with it. */
4390         g_list_foreach (old_list, (GFunc) selection_free, NULL);
4391 }
4392
4393 static void
4394 compute_selections (EvView   *view,
4395                     GdkPoint *start,
4396                     GdkPoint *stop)
4397 {
4398         GList *list;
4399
4400         if (view->selection_mode == EV_VIEW_SELECTION_RECTANGLE)
4401                 list = compute_new_selection_rect (view, start, stop);
4402         else
4403                 list = compute_new_selection_text (view, start, stop);
4404         merge_selection_region (view, list);
4405 }
4406
4407 /* Free's the selection.  It's up to the caller to queue redraws if needed.
4408  */
4409 static void
4410 selection_free (EvViewSelection *selection)
4411 {
4412         if (selection->covered_region)
4413                 gdk_region_destroy (selection->covered_region);
4414         g_free (selection);
4415 }
4416
4417 static void
4418 clear_selection (EvView *view)
4419 {
4420         g_list_foreach (view->selection_info.selections, (GFunc)selection_free, NULL);
4421         view->selection_info.selections = NULL;
4422         view->selection_info.in_selection = FALSE;
4423         if (view->pixbuf_cache)
4424                 ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, NULL);
4425         g_object_notify (G_OBJECT (view), "has-selection");
4426 }
4427
4428
4429 void
4430 ev_view_select_all (EvView *view)
4431 {
4432         int n_pages, i;
4433
4434         /* Disable selection on rotated pages for the 0.4.0 series */
4435         if (view->rotation != 0)
4436                 return;
4437
4438         clear_selection (view);
4439
4440         n_pages = ev_page_cache_get_n_pages (view->page_cache);
4441         for (i = 0; i < n_pages; i++) {
4442                 int width, height;
4443                 EvViewSelection *selection;
4444
4445                 ev_page_cache_get_size (view->page_cache,
4446                                         i,
4447                                         view->rotation,
4448                                         1.0, &width, &height);
4449
4450                 selection = g_new0 (EvViewSelection, 1);
4451                 selection->page = i;
4452                 selection->rect.x1 = selection->rect.y1 = 0;
4453                 selection->rect.x2 = width;
4454                 selection->rect.y2 = height;
4455
4456                 view->selection_info.selections = g_list_append (view->selection_info.selections, selection);
4457         }
4458
4459         ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, view->selection_info.selections);
4460         g_object_notify (G_OBJECT (view), "has-selection");
4461         gtk_widget_queue_draw (GTK_WIDGET (view));
4462 }
4463
4464 gboolean
4465 ev_view_get_has_selection (EvView *view)
4466 {
4467         return view->selection_info.selections != NULL;
4468 }
4469
4470 static char *
4471 get_selected_text (EvView *ev_view)
4472 {
4473         GString *text;
4474         GList *l;
4475
4476         text = g_string_new (NULL);
4477
4478         ev_document_doc_mutex_lock ();
4479
4480         for (l = ev_view->selection_info.selections; l != NULL; l = l->next) {
4481                 EvViewSelection *selection = (EvViewSelection *)l->data;
4482                 char *tmp;
4483
4484                 tmp = ev_document_get_text (ev_view->document,
4485                                             selection->page,
4486                                             &selection->rect);
4487                 g_string_append (text, tmp);
4488                 g_free (tmp);
4489         }
4490
4491         ev_document_doc_mutex_unlock ();
4492
4493         return g_string_free (text, FALSE);
4494 }
4495
4496 void
4497 ev_view_copy (EvView *ev_view)
4498 {
4499         GtkClipboard *clipboard;
4500         char *text;
4501
4502         if (!ev_document_can_get_text (ev_view->document)) {
4503                 return;
4504         }
4505
4506         text = get_selected_text (ev_view);
4507         clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view),
4508                                               GDK_SELECTION_CLIPBOARD);
4509         gtk_clipboard_set_text (clipboard, text, -1);
4510         g_free (text);
4511 }
4512
4513 static void
4514 ev_view_primary_get_cb (GtkClipboard     *clipboard,
4515                         GtkSelectionData *selection_data,
4516                         guint             info,
4517                         gpointer          data)
4518 {
4519         EvView *ev_view = EV_VIEW (data);
4520         char *text;
4521
4522         if (!ev_document_can_get_text (ev_view->document)) {
4523                 return;
4524         }
4525
4526         text = get_selected_text (ev_view);
4527         gtk_selection_data_set_text (selection_data, text, -1);
4528         g_free (text);
4529 }
4530
4531 static void
4532 ev_view_primary_clear_cb (GtkClipboard *clipboard,
4533                           gpointer      data)
4534 {
4535         EvView *view = EV_VIEW (data);
4536
4537         clear_selection (view);
4538 }
4539
4540 static void
4541 ev_view_update_primary_selection (EvView *ev_view)
4542 {
4543         GtkClipboard *clipboard;
4544
4545         clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view),
4546                                               GDK_SELECTION_PRIMARY);
4547
4548         if (ev_view->selection_info.selections) {
4549                 if (!gtk_clipboard_set_with_owner (clipboard,
4550                                                    clipboard_targets,
4551                                                    G_N_ELEMENTS (clipboard_targets),
4552                                                    ev_view_primary_get_cb,
4553                                                    ev_view_primary_clear_cb,
4554                                                    G_OBJECT (ev_view)))
4555                         ev_view_primary_clear_cb (clipboard, ev_view);
4556         } else {
4557                 if (gtk_clipboard_get_owner (clipboard) == G_OBJECT (ev_view))
4558                         gtk_clipboard_clear (clipboard);
4559         }
4560 }
4561
4562 /*** Cursor operations ***/
4563
4564 static GdkCursor *
4565 ev_view_create_invisible_cursor(void)
4566 {
4567        GdkBitmap *empty;
4568        GdkColor black = { 0, 0, 0, 0 };
4569        static char bits[] = { 0x00 };
4570
4571        empty = gdk_bitmap_create_from_data (NULL, bits, 1, 1);
4572
4573        return gdk_cursor_new_from_pixmap (empty, empty, &black, &black, 0, 0);
4574 }
4575
4576 static void
4577 ev_view_set_cursor (EvView *view, EvViewCursor new_cursor)
4578 {
4579         GdkCursor *cursor = NULL;
4580         GdkDisplay *display;
4581         GtkWidget *widget;
4582
4583         if (view->cursor == new_cursor) {
4584                 return;
4585         }
4586
4587         widget = gtk_widget_get_toplevel (GTK_WIDGET (view));
4588         display = gtk_widget_get_display (widget);
4589         view->cursor = new_cursor;
4590
4591         switch (new_cursor) {
4592                 case EV_VIEW_CURSOR_NORMAL:
4593                         gdk_window_set_cursor (widget->window, NULL);
4594                         break;
4595                 case EV_VIEW_CURSOR_IBEAM:
4596                         cursor = gdk_cursor_new_for_display (display, GDK_XTERM);
4597                         break;
4598                 case EV_VIEW_CURSOR_LINK:
4599                         cursor = gdk_cursor_new_for_display (display, GDK_HAND2);
4600                         break;
4601                 case EV_VIEW_CURSOR_WAIT:
4602                         cursor = gdk_cursor_new_for_display (display, GDK_WATCH);
4603                         break;
4604                 case EV_VIEW_CURSOR_HIDDEN:
4605                         cursor = ev_view_create_invisible_cursor ();
4606                         break;
4607                 case EV_VIEW_CURSOR_DRAG:
4608                         cursor = gdk_cursor_new_for_display (display, GDK_FLEUR);
4609                         break;
4610         }
4611
4612         if (cursor) {
4613                 gdk_window_set_cursor (widget->window, cursor);
4614                 gdk_cursor_unref (cursor);
4615                 gdk_flush();
4616         }
4617 }
4618
4619 void
4620 ev_view_hide_cursor (EvView *view)
4621 {
4622        ev_view_set_cursor (view, EV_VIEW_CURSOR_HIDDEN);
4623 }
4624
4625 void
4626 ev_view_show_cursor (EvView *view)
4627 {
4628        ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
4629 }
4630
4631 static void
4632 ev_view_reset_presentation_state (EvView *view)
4633 {
4634         if (!view->presentation ||
4635             view->presentation_state == EV_PRESENTATION_NORMAL)
4636                 return;
4637
4638         view->presentation_state = EV_PRESENTATION_NORMAL;
4639         gdk_window_set_background (GTK_WIDGET (view)->window,
4640                                    &GTK_WIDGET (view)->style->black);
4641         gtk_widget_queue_draw (GTK_WIDGET (view));
4642 }
4643
4644 gboolean
4645 ev_view_next_page (EvView *view)
4646 {
4647         int page, n_pages;
4648
4649         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
4650
4651         if (!view->page_cache)
4652                 return FALSE;
4653
4654         ev_view_presentation_transition_stop (view);
4655         ev_view_reset_presentation_state (view);
4656
4657         page = ev_page_cache_get_current_page (view->page_cache);
4658         n_pages = ev_page_cache_get_n_pages (view->page_cache);
4659
4660         if (view->dual_page && !view->presentation)
4661                 page = page + 2;
4662         else
4663                 page = page + 1;
4664
4665         if (page < n_pages) {
4666                 ev_page_cache_set_current_page (view->page_cache, page);
4667                 return TRUE;
4668         } else if (view->presentation && page == n_pages) {
4669                 view->presentation_state = EV_PRESENTATION_END;
4670                 gtk_widget_queue_draw (GTK_WIDGET (view));
4671                 return TRUE;
4672         } else if (view->dual_page && page == n_pages) {
4673                 ev_page_cache_set_current_page (view->page_cache, page - 1);
4674                 return TRUE;
4675         } else {
4676                 return FALSE;
4677         }
4678 }
4679
4680 gboolean
4681 ev_view_previous_page (EvView *view)
4682 {
4683         int page;
4684
4685         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
4686
4687         if (!view->page_cache)
4688                 return FALSE;
4689
4690         if (view->presentation &&
4691             view->presentation_state == EV_PRESENTATION_END) {
4692                 ev_view_reset_presentation_state (view);
4693                 return TRUE;
4694         }
4695
4696         ev_view_reset_presentation_state (view);
4697
4698         page = ev_page_cache_get_current_page (view->page_cache);
4699
4700         if (view->dual_page && !view->presentation)
4701                 page = page - 2;
4702         else
4703                 page = page - 1;
4704
4705         if (page >= 0) {
4706                 ev_page_cache_set_current_page (view->page_cache, page);
4707                 return TRUE;
4708         } else if (ev_view_get_dual_page (view) && page == -1) {
4709                 ev_page_cache_set_current_page (view->page_cache, 0);
4710                 return TRUE;
4711         } else {
4712                 return FALSE;
4713         }
4714 }
4715
4716 /*** Enum description for usage in signal ***/
4717
4718 GType
4719 ev_sizing_mode_get_type (void)
4720 {
4721   static GType etype = 0;
4722   if (etype == 0) {
4723     static const GEnumValue values[] = {
4724       { EV_SIZING_FIT_WIDTH, "EV_SIZING_FIT_WIDTH", "fit-width" },
4725       { EV_SIZING_BEST_FIT, "EV_SIZING_BEST_FIT", "best-fit" },
4726       { EV_SIZING_FREE, "EV_SIZING_FREE", "free" },
4727       { 0, NULL, NULL }
4728     };
4729     etype = g_enum_register_static ("EvSizingMode", values);
4730   }
4731   return etype;
4732 }
4733
4734 GType
4735 ev_scroll_type_get_type (void)
4736 {
4737   static GType etype = 0;
4738   if (etype == 0) {
4739     static const GEnumValue values[] = {
4740       { EV_SCROLL_PAGE_FORWARD, "EV_SCROLL_PAGE_FORWARD", "scroll-page-forward" },
4741       { EV_SCROLL_PAGE_BACKWARD, "EV_SCROLL_PAGE_BACKWARD", "scroll-page-backward" },
4742       { EV_SCROLL_STEP_FORWARD, "EV_SCROLL_STEP_FORWARD", "scroll-step-forward" },
4743       { EV_SCROLL_STEP_FORWARD, "EV_SCROLL_STEP_FORWARD", "scroll-step-forward" },
4744       { EV_SCROLL_STEP_UP, "EV_SCROLL_STEP_UP", "scroll-step-up" },
4745       { EV_SCROLL_STEP_DOWN, "EV_SCROLL_STEP_DOWN", "scroll-step-down" },
4746       { 0, NULL, NULL }
4747     };
4748     etype = g_enum_register_static ("EvScrollType", values);
4749   }
4750   return etype;
4751 }