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-images.h"
  39 #include "ev-document-find.h"
  40 #include "ev-document-transition.h"
  41 #include "ev-document-misc.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_DND_URI,
  77         TARGET_DND_TEXT,
  78         TARGET_DND_IMAGE
  79 };
  80
  81 enum {
  82         TARGET_STRING,
  83         TARGET_TEXT,
  84         TARGET_COMPOUND_TEXT,
  85         TARGET_UTF8_STRING,
  86         TARGET_TEXT_BUFFER_CONTENTS
  87 };
  88
  89 static const GtkTargetEntry clipboard_targets[] = {
  90         { "STRING", 0, TARGET_STRING },
  91         { "TEXT",   0, TARGET_TEXT },
  92         { "COMPOUND_TEXT", 0, TARGET_COMPOUND_TEXT },
  93         { "UTF8_STRING", 0, TARGET_UTF8_STRING },
  94 };
  95
  96 static const GtkTargetEntry view_drop_targets[] = {
  97         { "text/uri-list", 0, 0 }
  98 };
  99
 100 static guint signals[N_SIGNALS];
 101
 102 typedef enum {
 103         EV_VIEW_FIND_NEXT,
 104         EV_VIEW_FIND_PREV
 105 } EvViewFindDirection;
 106
 107 #define ZOOM_IN_FACTOR  1.2
 108 #define ZOOM_OUT_FACTOR (1.0/ZOOM_IN_FACTOR)
 109
 110 #define MIN_SCALE 0.05409
 111 #define MAX_SCALE 4.0
 112
 113 #define SCROLL_TIME 150
 114
 115 /*** Scrolling ***/
 116 static void       scroll_to_current_page                     (EvView *view,
 117                                                               GtkOrientation orientation);
 118 static void       ev_view_set_scroll_adjustments             (EvView             *view,
 119                                                               GtkAdjustment      *hadjustment,
 120                                                               GtkAdjustment      *vadjustment);
 121 static void       view_update_range_and_current_page         (EvView             *view);
 122 static void       set_scroll_adjustment                      (EvView             *view,
 123                                                               GtkOrientation      orientation,
 124                                                               GtkAdjustment      *adjustment);
 125 static void       ev_view_set_scroll_adjustments             (EvView             *view,
 126                                                               GtkAdjustment      *hadjustment,
 127                                                               GtkAdjustment      *vadjustment);
 128 static void       add_scroll_binding_keypad                  (GtkBindingSet      *binding_set,
 129                                                               guint               keyval,
 130                                                               GdkModifierType modifiers,
 131                                                               EvScrollType       scroll,
 132                                                               gboolean            horizontal);
 133 static void       ensure_rectangle_is_visible                (EvView             *view,
 134                                                               GdkRectangle       *rect);
 135
 136 /*** Geometry computations ***/
 137 static void       compute_border                             (EvView             *view,
 138                                                               int                 width,
 139                                                               int                 height,
 140                                                               GtkBorder          *border);
 141 static void       get_page_y_offset                          (EvView *view,
 142                                                               int page,
 143                                                               double zoom,
 144                                                               int *y_offset);
 145 static gboolean   get_page_extents                           (EvView             *view,
 146                                                               gint                page,
 147                                                               GdkRectangle       *page_area,
 148                                                               GtkBorder          *border);
 149 static void       view_rect_to_doc_rect                      (EvView             *view,
 150                                                               GdkRectangle       *view_rect,
 151                                                               GdkRectangle       *page_area,
 152                                                               EvRectangle        *doc_rect);
 153 static void       doc_rect_to_view_rect                      (EvView             *view,
 154                                                               int                 page,
 155                                                               EvRectangle        *doc_rect,
 156                                                               GdkRectangle       *view_rect);
 157 static void       find_page_at_location                      (EvView             *view,
 158                                                               gdouble             x,
 159                                                               gdouble             y,
 160                                                               gint               *page,
 161                                                               gint               *x_offset,
 162                                                               gint               *y_offset);
 163 static gboolean  doc_point_to_view_point                     (EvView       *view,
 164                                                               int           page,
 165                                                               EvPoint      *doc_point,
 166                                                               GdkPoint     *view_point);
 167 /*** Hyperrefs ***/
 168 static EvLink *   ev_view_get_link_at_location               (EvView  *view,
 169                                                               gdouble  x,
 170                                                               gdouble  y);
 171 static char*      tip_from_link                              (EvView             *view,
 172                                                               EvLink             *link);
 173 static void       handle_link_over_xy                        (EvView *view,
 174                                                               gint x,
 175                                                               gint y);
 176 /*** GtkWidget implementation ***/
 177 static void       ev_view_size_request_continuous_dual_page  (EvView             *view,
 178                                                               GtkRequisition     *requisition);
 179 static void       ev_view_size_request_continuous            (EvView             *view,
 180                                                               GtkRequisition     *requisition);
 181 static void       ev_view_size_request_dual_page             (EvView             *view,
 182                                                               GtkRequisition     *requisition);
 183 static void       ev_view_size_request_single_page           (EvView             *view,
 184                                                               GtkRequisition     *requisition);
 185 static void       ev_view_size_request                       (GtkWidget          *widget,
 186                                                               GtkRequisition     *requisition);
 187 static void       ev_view_size_allocate                      (GtkWidget          *widget,
 188                                                               GtkAllocation      *allocation);
 189 static void       ev_view_realize                            (GtkWidget          *widget);
 190 static gboolean   ev_view_scroll_event                       (GtkWidget          *widget,
 191                                                               GdkEventScroll     *event);
 192 static gboolean   ev_view_expose_event                       (GtkWidget          *widget,
 193                                                               GdkEventExpose     *event);
 194 static gboolean   ev_view_popup_menu                         (GtkWidget          *widget);
 195 static gboolean   ev_view_button_press_event                 (GtkWidget          *widget,
 196                                                               GdkEventButton     *event);
 197 static gboolean   ev_view_motion_notify_event                (GtkWidget          *widget,
 198                                                               GdkEventMotion     *event);
 199 static gboolean   ev_view_button_release_event               (GtkWidget          *widget,
 200                                                               GdkEventButton     *event);
 201 static gboolean   ev_view_enter_notify_event                 (GtkWidget          *widget,
 202                                                               GdkEventCrossing   *event);
 203 static gboolean   ev_view_leave_notify_event                 (GtkWidget          *widget,
 204                                                               GdkEventCrossing   *event);
 205 static void       ev_view_style_set                          (GtkWidget          *widget,
 206                                                               GtkStyle           *old_style);
 207
 208 static AtkObject *ev_view_get_accessible                     (GtkWidget *widget);
 209
 210 /*** Drawing ***/
 211 static guint32    ev_gdk_color_to_rgb                        (const GdkColor     *color);
 212 static void       draw_rubberband                            (GtkWidget          *widget,
 213                                                               GdkWindow          *window,
 214                                                               const GdkRectangle *rect,
 215                                                               guchar              alpha);
 216 static void       highlight_find_results                     (EvView             *view,
 217                                                               int                 page);
 218 static void       draw_one_page                              (EvView             *view,
 219                                                               gint                page,
 220                                                               GdkRectangle       *page_area,
 221                                                               GtkBorder          *border,
 222                                                               GdkRectangle       *expose_area,
 223                                                               gboolean           *page_ready);
 224 static void       draw_loading_text                          (EvView             *view,
 225                                                               GdkRectangle       *page_area,
 226                                                               GdkRectangle       *expose_area);
 227
 228 /*** Callbacks ***/
 229 static void       find_changed_cb                            (EvDocument         *document,
 230                                                               int                 page,
 231                                                               EvView             *view);
 232 static void       job_finished_cb                            (EvPixbufCache      *pixbuf_cache,
 233                                                               EvView             *view);
 234 static void       page_changed_cb                            (EvPageCache        *page_cache,
 235                                                               int                 new_page,
 236                                                               EvView             *view);
 237 static void       on_adjustment_value_changed                (GtkAdjustment      *adjustment,
 238                                                               EvView             *view);
 239
 240 /*** GObject ***/
 241 static void       ev_view_finalize                           (GObject            *object);
 242 static void       ev_view_destroy                            (GtkObject          *object);
 243 static void       ev_view_set_property                       (GObject            *object,
 244                                                               guint               prop_id,
 245                                                               const GValue       *value,
 246                                                               GParamSpec         *pspec);
 247 static void       ev_view_get_property                       (GObject            *object,
 248                                                               guint               prop_id,
 249                                                               GValue             *value,
 250                                                               GParamSpec         *pspec);
 251 static void       ev_view_class_init                         (EvViewClass        *class);
 252 static void       ev_view_init                               (EvView             *view);
 253
 254 /*** Zoom and sizing ***/
 255 static double   zoom_for_size_fit_width                      (int doc_width,
 256                                                               int doc_height,
 257                                                               int target_width,
 258                                                               int target_height,
 259                                                               int vsb_width);
 260 static double   zoom_for_size_fit_height                     (int doc_width,
 261                                                               int doc_height,
 262                                                               int target_width,
 263                                                               int target_height,
 264                                                               int vsb_height);
 265 static double   zoom_for_size_best_fit                       (int doc_width,
 266                                                               int doc_height,
 267                                                               int target_width,
 268                                                               int target_height,
 269                                                               int vsb_width,
 270                                                               int hsb_width);
 271 static void     ev_view_zoom_for_size_presentation           (EvView *view,
 272                                                               int     width,
 273                                                               int     height);
 274 static void     ev_view_zoom_for_size_continuous_and_dual_page (EvView *view,
 275                                                                 int     width,
 276                                                                 int     height,
 277                                                                 int     vsb_width,
 278                                                                 int     hsb_height);
 279 static void     ev_view_zoom_for_size_continuous               (EvView *view,
 280                                                                 int     width,
 281                                                                 int     height,
 282                                                                 int     vsb_width,
 283                                                                 int     hsb_height);
 284 static void     ev_view_zoom_for_size_dual_page                (EvView *view,
 285                                                                 int     width,
 286                                                                 int     height,
 287                                                                 int     vsb_width,
 288                                                                 int     hsb_height);
 289 static void     ev_view_zoom_for_size_single_page              (EvView *view,
 290                                                                 int     width,
 291                                                                 int     height,
 292                                                                 int     vsb_width,
 293                                                                 int     hsb_height);
 294 /*** Cursors ***/
 295 static GdkCursor* ev_view_create_invisible_cursor            (void);
 296 static void       ev_view_set_cursor                         (EvView             *view,
 297                                                               EvViewCursor        new_cursor);
 298
 299 /*** Status messages ***/
 300 static void       ev_view_set_status                         (EvView             *view,
 301                                                               const char         *message);
 302 static void       update_find_status_message                 (EvView             *view,
 303                                                               gboolean            this_page);
 304 static void       ev_view_set_find_status                    (EvView             *view,
 305                                                               const char         *message);
 306 /*** Find ***/
 307 static void       jump_to_find_result                        (EvView             *view);
 308 static void       jump_to_find_page                          (EvView             *view,
 309                                                               EvViewFindDirection direction,
 310                                                               gint                shift);
 311
 312 /*** Selection ***/
 313 static void       compute_selections                         (EvView             *view,
 314                                                               GdkPoint           *start,
 315                                                               GdkPoint           *stop);
 316 static void       clear_selection                            (EvView             *view);
 317 static void       selection_free                             (EvViewSelection    *selection);
 318 static char*      get_selected_text                          (EvView             *ev_view);
 319 static void       ev_view_primary_get_cb                     (GtkClipboard       *clipboard,
 320                                                               GtkSelectionData   *selection_data,
 321                                                               guint               info,
 322                                                               gpointer            data);
 323 static void       ev_view_primary_clear_cb                   (GtkClipboard       *clipboard,
 324                                                               gpointer            data);
 325 static void       ev_view_update_primary_selection           (EvView             *ev_view);
 326
 327 /*** Presentation ***/
 328 static void       ev_view_presentation_transition_start      (EvView             *ev_view);
 329 static void       ev_view_presentation_transition_stop       (EvView             *ev_view);
 330
 331
 332 G_DEFINE_TYPE (EvView, ev_view, GTK_TYPE_WIDGET)
 333
 334 static void
 335 scroll_to_current_page (EvView *view, GtkOrientation orientation)
 336 {
 337         GdkPoint view_point;
 338
 339         if (view->document == NULL) {
 340                 return;
 341         }
 342
 343         doc_point_to_view_point (view, view->current_page, &view->pending_point, &view_point);
 344
 345         if (orientation == GTK_ORIENTATION_VERTICAL) {
 346                 view->pending_point.y = 0;
 347         } else {
 348                 view->pending_point.x = 0;
 349         }
 350
 351         if (orientation == GTK_ORIENTATION_VERTICAL) {
 352                 if (view->continuous) {
 353                         gtk_adjustment_clamp_page (view->vadjustment,
 354                                                    view_point.y - view->spacing / 2,
 355                                                    view_point.y + view->vadjustment->page_size);
 356                 } else {
 357                         gtk_adjustment_set_value (view->vadjustment,
 358                                                   CLAMP (view_point.y,
 359                                                   view->vadjustment->lower,
 360                                                   view->vadjustment->upper -
 361                                                   view->vadjustment->page_size));
 362                 }
 363         } else {
 364                 if (view->dual_page) {
 365                         gtk_adjustment_clamp_page (view->hadjustment,
 366                                                    view_point.x,
 367                                                    view_point.x + view->hadjustment->page_size);
 368                 } else {
 369                         gtk_adjustment_set_value (view->hadjustment,
 370                                                   CLAMP (view_point.x,
 371                                                   view->hadjustment->lower,
 372                                                   view->hadjustment->upper -
 373                                                   view->hadjustment->page_size));
 374                 }
 375         }
 376 }
 377
 378 static void
 379 view_set_adjustment_values (EvView         *view,
 380                             GtkOrientation  orientation)
 381 {
 382         GtkWidget *widget = GTK_WIDGET (view);
 383         GtkAdjustment *adjustment;
 384         int requisition;
 385         int allocation;
 386
 387         double factor;
 388         gint new_value;
 389
 390         if (orientation == GTK_ORIENTATION_HORIZONTAL)  {
 391                 requisition = widget->requisition.width;
 392                 allocation = widget->allocation.width;
 393                 adjustment = view->hadjustment;
 394         } else {
 395                 requisition = widget->requisition.height;
 396                 allocation = widget->allocation.height;
 397                 adjustment = view->vadjustment;
 398         }
 399
 400         if (!adjustment)
 401                 return;
 402
 403         factor = 1.0;
 404         switch (view->pending_scroll) {
 405                 case SCROLL_TO_KEEP_POSITION:
 406                 case SCROLL_TO_FIND_LOCATION:
 407                         factor = (adjustment->value) / adjustment->upper;
 408                         break;
 409                 case SCROLL_TO_PAGE_POSITION:
 410                         break;
 411                 case SCROLL_TO_CENTER:
 412                         factor = (adjustment->value + adjustment->page_size * 0.5) / adjustment->upper;
 413                         break;
 414         }
 415
 416         adjustment->page_size = allocation;
 417         adjustment->step_increment = allocation * 0.1;
 418         adjustment->page_increment = allocation * 0.9;
 419         adjustment->lower = 0;
 420         adjustment->upper = MAX (allocation, requisition);
 421
 422         /*
 423          * We add 0.5 to the values before to average out our rounding errors.
 424          */
 425         switch (view->pending_scroll) {
 426                 case SCROLL_TO_KEEP_POSITION:
 427                 case SCROLL_TO_FIND_LOCATION:
 428                         new_value = CLAMP (adjustment->upper * factor + 0.5, 0, adjustment->upper - adjustment->page_size);
 429                         gtk_adjustment_set_value (adjustment, (int)new_value);
 430                         break;
 431                 case SCROLL_TO_PAGE_POSITION:
 432                         scroll_to_current_page (view, orientation);
 433                         break;
 434                 case SCROLL_TO_CENTER:
 435                         new_value = CLAMP (adjustment->upper * factor - adjustment->page_size * 0.5 + 0.5,
 436                                            0, adjustment->upper - adjustment->page_size);
 437                         gtk_adjustment_set_value (adjustment, (int)new_value);
 438                         break;
 439         }
 440
 441         gtk_adjustment_changed (adjustment);
 442 }
 443
 444 static void
 445 view_update_range_and_current_page (EvView *view)
 446 {
 447         gint current_page;
 448         gint best_current_page = -1;
 449
 450         /* Presentation trumps all other modes */
 451         if (view->presentation) {
 452                 view->start_page = view->current_page;
 453                 view->end_page = view->current_page;
 454         } else if (view->continuous) {
 455                 GdkRectangle current_area, unused, page_area;
 456                 GtkBorder border;
 457                 gboolean found = FALSE;
 458                 gint area_max = -1, area;
 459                 int i;
 460
 461                 if (!(view->vadjustment && view->hadjustment))
 462                         return;
 463
 464                 current_area.x = view->hadjustment->value;
 465                 current_area.width = view->hadjustment->upper;
 466                 current_area.y = view->vadjustment->value;
 467                 current_area.height = view->vadjustment->page_size;
 468
 469                 for (i = 0; i < ev_page_cache_get_n_pages (view->page_cache); i++) {
 470
 471                         get_page_extents (view, i, &page_area, &border);
 472
 473                         if (gdk_rectangle_intersect (&current_area, &page_area, &unused)) {
 474                                 area = unused.width * unused.height;
 475
 476                                 if (!found) {
 477                                         area_max = area;
 478                                         view->start_page = i;
 479                                         found = TRUE;
 480                                         best_current_page = i;
 481                                 }
 482                                 if (area > area_max) {
 483                                         best_current_page = (area == area_max) ? MIN (i, best_current_page) : i;
 484                                         area_max = area;
 485                                 }
 486
 487                                 view->end_page = i;
 488                         } else if (found) {
 489                                 break;
 490                         }
 491                 }
 492
 493         } else if (view->dual_page) {
 494                 if (view->current_page % 2 == ev_page_cache_get_dual_even_left (view->page_cache)) {
 495                         view->start_page = view->current_page;
 496                         if (view->current_page + 1 < ev_page_cache_get_n_pages (view->page_cache))
 497                                 view->end_page = view->start_page + 1;
 498                         else
 499                                 view->end_page = view->start_page;
 500                 } else {
 501                         if (view->current_page < 1)
 502                                 view->start_page = view->current_page;
 503                         else
 504                                 view->start_page = view->current_page - 1;
 505                         view->end_page = view->current_page;
 506                 }
 507         } else {
 508                 view->start_page = view->current_page;
 509                 view->end_page = view->current_page;
 510         }
 511
 512         best_current_page = MAX (best_current_page, view->start_page);
 513         current_page = ev_page_cache_get_current_page (view->page_cache);
 514
 515         if ((current_page != best_current_page) && (view->pending_scroll == SCROLL_TO_KEEP_POSITION)) {
 516                 view->current_page = best_current_page;
 517                 ev_page_cache_set_current_page (view->page_cache, best_current_page);
 518         }
 519
 520         ev_pixbuf_cache_set_page_range (view->pixbuf_cache,
 521                                         view->start_page,
 522                                         view->end_page,
 523                                         view->rotation,
 524                                         view->scale,
 525                                         view->selection_info.selections);
 526 }
 527
 528 static void
 529 set_scroll_adjustment (EvView *view,
 530                        GtkOrientation  orientation,
 531                        GtkAdjustment  *adjustment)
 532 {
 533         GtkAdjustment **to_set;
 534
 535         if (orientation == GTK_ORIENTATION_HORIZONTAL)
 536                 to_set = &view->hadjustment;
 537         else
 538                 to_set = &view->vadjustment;
 539
 540         if (*to_set != adjustment) {
 541                 if (*to_set) {
 542                         g_signal_handlers_disconnect_by_func (*to_set,
 543                                                               (gpointer) on_adjustment_value_changed,
 544                                                               view);
 545                         g_object_unref (*to_set);
 546                 }
 547
 548                 *to_set = adjustment;
 549                 view_set_adjustment_values (view, orientation);
 550
 551                 if (*to_set) {
 552                         g_object_ref (*to_set);
 553                         g_signal_connect (*to_set, "value_changed",
 554                                           G_CALLBACK (on_adjustment_value_changed), view);
 555                 }
 556         }
 557 }
 558
 559 static void
 560 ev_view_set_scroll_adjustments (EvView *view,
 561                                 GtkAdjustment  *hadjustment,
 562                                 GtkAdjustment  *vadjustment)
 563 {
 564         set_scroll_adjustment (view, GTK_ORIENTATION_HORIZONTAL, hadjustment);
 565         set_scroll_adjustment (view, GTK_ORIENTATION_VERTICAL, vadjustment);
 566
 567         on_adjustment_value_changed (NULL, view);
 568 }
 569
 570 static void
 571 add_scroll_binding_keypad (GtkBindingSet  *binding_set,
 572                            guint           keyval,
 573                            GdkModifierType modifiers,
 574                            EvScrollType    scroll,
 575                            gboolean        horizontal)
 576 {
 577   guint keypad_keyval = keyval - GDK_Left + GDK_KP_Left;
 578
 579   gtk_binding_entry_add_signal (binding_set, keyval, modifiers,
 580                                 "binding_activated", 2,
 581                                 EV_TYPE_SCROLL_TYPE, scroll,
 582                                 G_TYPE_BOOLEAN, horizontal);
 583   gtk_binding_entry_add_signal (binding_set, keypad_keyval, modifiers,
 584                                 "binding_activated", 2,
 585                                 EV_TYPE_SCROLL_TYPE, scroll,
 586                                 G_TYPE_BOOLEAN, horizontal);
 587 }
 588
 589 void
 590 ev_view_scroll (EvView        *view,
 591                 EvScrollType   scroll,
 592                 gboolean horizontal)
 593 {
 594         GtkAdjustment *adjustment;
 595         double value, increment;
 596         gboolean first_page = FALSE;
 597         gboolean last_page = FALSE;
 598
 599         view->jump_to_find_result = FALSE;
 600
 601         if (view->presentation || view->sizing_mode == EV_SIZING_BEST_FIT) {
 602                 switch (scroll) {
 603                         case EV_SCROLL_PAGE_BACKWARD:
 604                         case EV_SCROLL_STEP_BACKWARD:
 605                                 ev_view_previous_page (view);
 606                                 break;
 607                         case EV_SCROLL_PAGE_FORWARD:
 608                         case EV_SCROLL_STEP_FORWARD:
 609                                 ev_view_next_page (view);
 610                                 break;
 611                         default:
 612                                 break;
 613                 }
 614                 return;
 615         }
 616
 617         /* Assign values for increment and vertical adjustment */
 618         adjustment = horizontal ? view->hadjustment : view->vadjustment;
 619         increment = adjustment->page_size * 0.75;
 620         value = adjustment->value;
 621
 622         /* Assign boolean for first and last page */
 623         if (view->current_page == 0)
 624                 first_page = TRUE;
 625         if (view->current_page == ev_page_cache_get_n_pages (view->page_cache) - 1)
 626                 last_page = TRUE;
 627
 628         switch (scroll) {
 629                 case EV_SCROLL_PAGE_BACKWARD:
 630                         /* Do not jump backwards if at the first page */
 631                         if (value == (adjustment->lower) && first_page) {
 632                                 /* Do nothing */
 633                                 /* At the top of a page, assign the upper bound limit of previous page */
 634                         } else if (value == (adjustment->lower)) {
 635                                 value = adjustment->upper - adjustment->page_size;
 636                                 ev_view_previous_page (view);
 637                                 /* Jump to the top */
 638                         } else {
 639                                 value = MAX (value - increment, adjustment->lower);
 640                         }
 641                         break;
 642                 case EV_SCROLL_PAGE_FORWARD:
 643                         /* Do not jump forward if at the last page */
 644                         if (value == (adjustment->upper - adjustment->page_size) && last_page) {
 645                                 /* Do nothing */
 646                         /* At the bottom of a page, assign the lower bound limit of next page */
 647                         } else if (value == (adjustment->upper - adjustment->page_size)) {
 648                                 value = 0;
 649                                 ev_view_next_page (view);
 650                         /* Jump to the bottom */
 651                         } else {
 652                                 value = MIN (value + increment, adjustment->upper - adjustment->page_size);
 653                         }
 654                         break;
 655                 case EV_SCROLL_STEP_BACKWARD:
 656                         value -= adjustment->step_increment;
 657                         break;
 658                 case EV_SCROLL_STEP_FORWARD:
 659                         value += adjustment->step_increment;
 660                         break;
 661                 case EV_SCROLL_STEP_DOWN:
 662                         value -= adjustment->step_increment / 10;
 663                         break;
 664                 case EV_SCROLL_STEP_UP:
 665                         value += adjustment->step_increment / 10;
 666                         break;
 667                 default:
 668                         break;
 669         }
 670
 671         value = CLAMP (value, adjustment->lower,
 672                        adjustment->upper - adjustment->page_size);
 673
 674         gtk_adjustment_set_value (adjustment, value);
 675 }
 676
 677 #define MARGIN 5
 678
 679 static void
 680 ensure_rectangle_is_visible (EvView *view, GdkRectangle *rect)
 681 {
 682         GtkWidget *widget = GTK_WIDGET (view);
 683         GtkAdjustment *adjustment;
 684         int value;
 685
 686         view->pending_scroll = SCROLL_TO_FIND_LOCATION;
 687
 688         adjustment = view->vadjustment;
 689
 690         if (rect->y < adjustment->value) {
 691                 value = MAX (adjustment->lower, rect->y - MARGIN);
 692                 gtk_adjustment_set_value (view->vadjustment, value);
 693         } else if (rect->y + rect->height >
 694                    adjustment->value + widget->allocation.height) {
 695                 value = MIN (adjustment->upper, rect->y + rect->height -
 696                              widget->allocation.height + MARGIN);
 697                 gtk_adjustment_set_value (view->vadjustment, value);
 698         }
 699
 700         adjustment = view->hadjustment;
 701
 702         if (rect->x < adjustment->value) {
 703                 value = MAX (adjustment->lower, rect->x - MARGIN);
 704                 gtk_adjustment_set_value (view->hadjustment, value);
 705         } else if (rect->x + rect->height >
 706                    adjustment->value + widget->allocation.width) {
 707                 value = MIN (adjustment->upper, rect->x + rect->width -
 708                              widget->allocation.width + MARGIN);
 709                 gtk_adjustment_set_value (view->hadjustment, value);
 710         }
 711
 712         gtk_widget_queue_resize (GTK_WIDGET (view));
 713 }
 714
 715 /*** Geometry computations ***/
 716
 717 static void
 718 compute_border (EvView *view, int width, int height, GtkBorder *border)
 719 {
 720         if (view->presentation) {
 721                 border->left = 0;
 722                 border->right = 0;
 723                 border->top = 0;
 724                 border->bottom = 0;
 725         } else {
 726                 ev_document_misc_get_page_border_size (width, height, border);
 727         }
 728 }
 729
 730 static void
 731 get_page_y_offset (EvView *view, int page, double zoom, int *y_offset)
 732 {
 733         int max_width, offset;
 734         GtkBorder border;
 735
 736         g_return_if_fail (y_offset != NULL);
 737
 738         ev_page_cache_get_max_width (view->page_cache, view->rotation, zoom, &max_width);
 739
 740         compute_border (view, max_width, max_width, &border);
 741
 742         if (view->dual_page) {
 743                 ev_page_cache_get_height_to_page (view->page_cache, page,
 744                                                   view->rotation, zoom, NULL, &offset);
 745                 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);
 746         } else {
 747                 ev_page_cache_get_height_to_page (view->page_cache, page,
 748                                                   view->rotation, zoom, &offset, NULL);
 749                 offset += (page + 1) * view->spacing + page * (border.top + border.bottom);
 750         }
 751
 752         *y_offset = offset;
 753         return;
 754 }
 755
 756 static gboolean
 757 get_page_extents (EvView       *view,
 758                   gint          page,
 759                   GdkRectangle *page_area,
 760                   GtkBorder    *border)
 761 {
 762         GtkWidget *widget;
 763         int width, height;
 764
 765         widget = GTK_WIDGET (view);
 766
 767         /* Get the size of the page */
 768         ev_page_cache_get_size (view->page_cache, page,
 769                                 view->rotation,
 770                                 view->scale,
 771                                 &width, &height);
 772         compute_border (view, width, height, border);
 773         page_area->width = width + border->left + border->right;
 774         page_area->height = height + border->top + border->bottom;
 775
 776         if (view->presentation) {
 777                 page_area->x = (MAX (0, widget->allocation.width - width))/2;
 778                 page_area->y = (MAX (0, widget->allocation.height - height))/2;
 779         } else if (view->continuous) {
 780                 gint max_width;
 781                 gint x, y;
 782
 783                 ev_page_cache_get_max_width (view->page_cache, view->rotation,
 784                                              view->scale, &max_width);
 785                 max_width = max_width + border->left + border->right;
 786                 /* Get the location of the bounding box */
 787                 if (view->dual_page) {
 788                         x = view->spacing + ((page % 2 == ev_page_cache_get_dual_even_left (view->page_cache)) ? 0 : 1) * (max_width + view->spacing);
 789                         x = x + MAX (0, widget->allocation.width - (max_width * 2 + view->spacing * 3)) / 2;
 790                         if (page % 2 == ev_page_cache_get_dual_even_left (view->page_cache))
 791                                 x = x + (max_width - width - border->left - border->right);
 792                 } else {
 793                         x = view->spacing;
 794                         x = x + MAX (0, widget->allocation.width - (width + view->spacing * 2)) / 2;
 795                 }
 796
 797                 get_page_y_offset (view, page, view->scale, &y);
 798
 799                 page_area->x = x;
 800                 page_area->y = y;
 801         } else {
 802                 gint x, y;
 803                 if (view->dual_page) {
 804                         gint width_2, height_2;
 805                         gint max_width = width;
 806                         gint max_height = height;
 807                         GtkBorder overall_border;
 808                         gint other_page;
 809
 810                         other_page = (page % 2 == ev_page_cache_get_dual_even_left (view->page_cache)) ? page + 1: page - 1;
 811
 812                         /* First, we get the bounding box of the two pages */
 813                         if (other_page < ev_page_cache_get_n_pages (view->page_cache)
 814                             && (0 <= other_page)) {
 815                                 ev_page_cache_get_size (view->page_cache,
 816                                                         other_page,
 817                                                         view->rotation,
 818                                                         view->scale,
 819                                                         &width_2, &height_2);
 820                                 if (width_2 > width)
 821                                         max_width = width_2;
 822                                 if (height_2 > height)
 823                                         max_height = height_2;
 824                         }
 825                         compute_border (view, max_width, max_height, &overall_border);
 826
 827                         /* Find the offsets */
 828                         x = view->spacing;
 829                         y = view->spacing;
 830
 831                         /* Adjust for being the left or right page */
 832                         if (page % 2 == ev_page_cache_get_dual_even_left (view->page_cache))
 833                                 x = x + max_width - width;
 834                         else
 835                                 x = x + (max_width + overall_border.left + overall_border.right) + view->spacing;
 836
 837                         y = y + (max_height - height)/2;
 838
 839                         /* Adjust for extra allocation */
 840                         x = x + MAX (0, widget->allocation.width -
 841                                      ((max_width + overall_border.left + overall_border.right) * 2 + view->spacing * 3))/2;
 842                         y = y + MAX (0, widget->allocation.height - (height + view->spacing * 2))/2;
 843                 } else {
 844                         x = view->spacing;
 845                         y = view->spacing;
 846
 847                         /* Adjust for extra allocation */
 848                         x = x + MAX (0, widget->allocation.width - (width + border->left + border->right + view->spacing * 2))/2;
 849                         y = y + MAX (0, widget->allocation.height - (height + border->top + border->bottom +  view->spacing * 2))/2;
 850                 }
 851
 852                 page_area->x = x;
 853                 page_area->y = y;
 854         }
 855
 856         return TRUE;
 857 }
 858
 859 static void
 860 view_point_to_doc_point (EvView *view,
 861                          GdkPoint *view_point,
 862                          GdkRectangle *page_area,
 863                          double  *doc_point_x,
 864                          double  *doc_point_y)
 865 {
 866         *doc_point_x = (double) (view_point->x - page_area->x) / view->scale;
 867         *doc_point_y = (double) (view_point->y - page_area->y) / view->scale;
 868 }
 869
 870 static void
 871 view_rect_to_doc_rect (EvView *view,
 872                        GdkRectangle *view_rect,
 873                        GdkRectangle *page_area,
 874                        EvRectangle  *doc_rect)
 875 {
 876         doc_rect->x1 = (double) (view_rect->x - page_area->x) / view->scale;
 877         doc_rect->y1 = (double) (view_rect->y - page_area->y) / view->scale;
 878         doc_rect->x2 = doc_rect->x1 + (double) view_rect->width / view->scale;
 879         doc_rect->y2 = doc_rect->y1 + (double) view_rect->height / view->scale;
 880 }
 881
 882 static gboolean
 883 doc_point_to_view_point (EvView       *view,
 884                          int           page,
 885                          EvPoint      *doc_point,
 886                          GdkPoint     *view_point)
 887 {
 888         GdkRectangle page_area;
 889         GtkBorder border;
 890         double x, y, view_x, view_y;
 891         int width, height;
 892
 893         ev_page_cache_get_size (view->page_cache, page,
 894                                 view->rotation,
 895                                 1.0,
 896                                 &width, &height);
 897
 898         if (view->rotation == 0) {
 899                 x = doc_point->x;
 900                 y = doc_point->y;
 901         } else if (view->rotation == 90) {
 902                 x = width - doc_point->y;
 903                 y = doc_point->x;
 904         } else if (view->rotation == 180) {
 905                 x = width - doc_point->x;
 906                 y = height - doc_point->y;
 907         } else if (view->rotation == 270) {
 908                 x = doc_point->y;
 909                 y = height - doc_point->x;
 910         } else {
 911                 g_assert_not_reached ();
 912         }
 913
 914         get_page_extents (view, page, &page_area, &border);
 915
 916         view_x = x * view->scale;
 917         view_y = y * view->scale;
 918         view_point->x = view_x + page_area.x;
 919         view_point->y = view_y + page_area.y;
 920
 921         return (view_x > 0 && view_x <= page_area.width &&
 922                 view_y > 0 && view_y <= page_area.height);
 923 }
 924
 925 static void
 926 doc_rect_to_view_rect (EvView       *view,
 927                        int           page,
 928                        EvRectangle  *doc_rect,
 929                        GdkRectangle *view_rect)
 930 {
 931         GdkRectangle page_area;
 932         GtkBorder border;
 933         double x, y, w, h;
 934         int width, height;
 935
 936         ev_page_cache_get_size (view->page_cache, page,
 937                                 view->rotation,
 938                                 1.0,
 939                                 &width, &height);
 940
 941         if (view->rotation == 0) {
 942                 x = doc_rect->x1;
 943                 y = doc_rect->y1;
 944                 w = doc_rect->x2 - doc_rect->x1;
 945                 h = doc_rect->y2 - doc_rect->y1;
 946         } else if (view->rotation == 90) {
 947                 x = width - doc_rect->y2;
 948                 y = doc_rect->x1;
 949                 w = doc_rect->y2 - doc_rect->y1;
 950                 h = doc_rect->x2 - doc_rect->x1;
 951         } else if (view->rotation == 180) {
 952                 x = width - doc_rect->x2;
 953                 y = height - doc_rect->y2;
 954                 w = doc_rect->x2 - doc_rect->x1;
 955                 h = doc_rect->y2 - doc_rect->y1;
 956         } else if (view->rotation == 270) {
 957                 x = doc_rect->y1;
 958                 y = height - doc_rect->x2;
 959                 w = doc_rect->y2 - doc_rect->y1;
 960                 h = doc_rect->x2 - doc_rect->x1;
 961         } else {
 962                 g_assert_not_reached ();
 963         }
 964
 965         get_page_extents (view, page, &page_area, &border);
 966
 967         view_rect->x = x * view->scale + page_area.x;
 968         view_rect->y = y * view->scale + page_area.y;
 969         view_rect->width = w * view->scale;
 970         view_rect->height = h * view->scale;
 971 }
 972
 973 static void
 974 find_page_at_location (EvView  *view,
 975                        gdouble  x,
 976                        gdouble  y,
 977                        gint    *page,
 978                        gint    *x_offset,
 979                        gint    *y_offset)
 980 {
 981         int i;
 982
 983         if (view->document == NULL)
 984                 return;
 985
 986         g_assert (page);
 987         g_assert (x_offset);
 988         g_assert (y_offset);
 989
 990         for (i = view->start_page; i <= view->end_page; i++) {
 991                 GdkRectangle page_area;
 992                 GtkBorder border;
 993
 994                 if (! get_page_extents (view, i, &page_area, &border))
 995                         continue;
 996
 997                 if ((x >= page_area.x + border.left) &&
 998                     (x < page_area.x + page_area.width - border.right) &&
 999                     (y >= page_area.y + border.top) &&
1000                     (y < page_area.y + page_area.height - border.bottom)) {
1001                         *page = i;
1002                         *x_offset = x - (page_area.x + border.left);
1003                         *y_offset = y - (page_area.y + border.top);
1004                         return;
1005                 }
1006         }
1007
1008         *page = -1;
1009 }
1010
1011 static gboolean
1012 location_in_text (EvView  *view,
1013                   gdouble  x,
1014                   gdouble  y)
1015 {
1016         GdkRegion *region;
1017         gint page = -1;
1018         gint x_offset = 0, y_offset = 0;
1019
1020         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1021
1022         if (page == -1)
1023                 return FALSE;
1024
1025         region = ev_pixbuf_cache_get_text_mapping (view->pixbuf_cache, page);
1026
1027         if (region)
1028                 return gdk_region_point_in (region, x_offset / view->scale, y_offset / view->scale);
1029         else
1030                 return FALSE;
1031 }
1032
1033 static int
1034 ev_view_get_width (EvView *view)
1035 {
1036         return GTK_WIDGET (view)->allocation.width;
1037 }
1038
1039 static int
1040 ev_view_get_height (EvView *view)
1041 {
1042         return GTK_WIDGET (view)->allocation.height;
1043 }
1044
1045 static gboolean
1046 location_in_selected_text (EvView  *view,
1047                            gdouble  x,
1048                            gdouble  y)
1049 {
1050         gint page = -1;
1051         gint x_offset = 0, y_offset = 0;
1052         EvViewSelection *selection;
1053         GList *l = NULL;
1054
1055         for (l = view->selection_info.selections; l != NULL; l = l->next) {
1056                 selection = (EvViewSelection *)l->data;
1057
1058                 find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1059
1060                 if (page != selection->page)
1061                         continue;
1062
1063                 if (selection->covered_region &&
1064                     gdk_region_point_in (selection->covered_region, x_offset, y_offset))
1065                         return TRUE;
1066         }
1067
1068         return FALSE;
1069 }
1070
1071 static gboolean
1072 get_doc_point_from_offset (EvView *view,
1073                            gint    page,
1074                            gint    x_offset,
1075                            gint    y_offset,
1076                            gint   *x_new,
1077                            gint   *y_new)
1078 {
1079         int width, height;
1080         double x, y;
1081
1082         ev_page_cache_get_size (view->page_cache, page,
1083                                 view->rotation,
1084                                 1.0,
1085                                 &width, &height);
1086
1087         x_offset = x_offset / view->scale;
1088         y_offset = y_offset / view->scale;
1089
1090         if (view->rotation == 0) {
1091                 x = x_offset;
1092                 y = y_offset;
1093         } else if (view->rotation == 90) {
1094                 x = y_offset;
1095                 y = width - x_offset;
1096         } else if (view->rotation == 180) {
1097                 x = width - x_offset;
1098                 y = height - y_offset;
1099         } else if (view->rotation == 270) {
1100                 x = height - y_offset;
1101                 y = x_offset;
1102         } else {
1103                 g_assert_not_reached ();
1104         }
1105
1106         *x_new = x;
1107         *y_new = y;
1108
1109         return TRUE;
1110 }
1111
1112 /*** Hyperref ***/
1113 static EvLink *
1114 ev_view_get_link_at_location (EvView  *view,
1115                               gdouble  x,
1116                               gdouble  y)
1117 {
1118         gint page = -1;
1119         gint x_offset = 0, y_offset = 0;
1120         gint x_new = 0, y_new = 0;
1121         GList *link_mapping;
1122
1123         if (!EV_IS_DOCUMENT_LINKS (view->document))
1124                 return NULL;
1125
1126         x += view->scroll_x;
1127         y += view->scroll_y;
1128
1129         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1130
1131         if (page == -1)
1132                 return NULL;
1133
1134
1135         if (get_doc_point_from_offset (view, page, x_offset,
1136                                        y_offset, &x_new, &y_new) == FALSE)
1137                 return NULL;
1138
1139         link_mapping = ev_pixbuf_cache_get_link_mapping (view->pixbuf_cache, page);
1140
1141         if (link_mapping)
1142                 return ev_link_mapping_find (link_mapping, x_new, y_new);
1143         else
1144                 return NULL;
1145 }
1146
1147 static void
1148 goto_fitr_dest (EvView *view, EvLinkDest *dest)
1149 {
1150         EvPoint doc_point;
1151         double zoom;
1152
1153         zoom = zoom_for_size_best_fit (ev_link_dest_get_right (dest) - ev_link_dest_get_left (dest),
1154                                        ev_link_dest_get_bottom (dest) - ev_link_dest_get_top (dest),
1155                                        ev_view_get_width (view),
1156                                        ev_view_get_height (view), 0, 0);
1157
1158         ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1159         ev_view_set_zoom (view, zoom, FALSE);
1160
1161         doc_point.x = ev_link_dest_get_left (dest);
1162         doc_point.y = ev_link_dest_get_top (dest);
1163
1164         view->current_page = ev_link_dest_get_page (dest);
1165         view->pending_point = doc_point;
1166         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1167
1168         gtk_widget_queue_resize (GTK_WIDGET (view));
1169 }
1170
1171 static void
1172 goto_fitv_dest (EvView *view, EvLinkDest *dest)
1173 {
1174         EvPoint doc_point;
1175         int doc_width, doc_height, page;
1176         double zoom;
1177
1178         page = ev_link_dest_get_page (dest);
1179         ev_page_cache_get_size (view->page_cache, page, 0, 1.0, &doc_width, &doc_height);
1180
1181         doc_point.x = ev_link_dest_get_left (dest);
1182         doc_point.y = 0;
1183
1184         zoom = zoom_for_size_fit_height (doc_width - doc_point.x , doc_height,
1185                                          ev_view_get_width (view),
1186                                          ev_view_get_height (view), 0);
1187
1188         ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1189         ev_view_set_zoom (view, zoom, FALSE);
1190
1191         view->current_page = page;
1192         view->pending_point = doc_point;
1193         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1194
1195         gtk_widget_queue_resize (GTK_WIDGET (view));
1196 }
1197
1198 static void
1199 goto_fith_dest (EvView *view, EvLinkDest *dest)
1200 {
1201         EvPoint doc_point;
1202         int doc_width, doc_height, page;
1203         double zoom;
1204
1205         page = ev_link_dest_get_page (dest);
1206         ev_page_cache_get_size (view->page_cache, page, 0, 1.0, &doc_width, &doc_height);
1207
1208         doc_point.x = 0;
1209         doc_point.y = ev_link_dest_get_top (dest);
1210
1211         zoom = zoom_for_size_fit_width (doc_width, ev_link_dest_get_top (dest),
1212                                         ev_view_get_width (view),
1213                                         ev_view_get_height (view), 0);
1214
1215         ev_view_set_sizing_mode (view, EV_SIZING_FIT_WIDTH);
1216         ev_view_set_zoom (view, zoom, FALSE);
1217
1218         view->current_page = page;
1219         view->pending_point = doc_point;
1220         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1221
1222         gtk_widget_queue_resize (GTK_WIDGET (view));
1223 }
1224
1225 static void
1226 goto_fit_dest (EvView *view, EvLinkDest *dest)
1227 {
1228         double zoom;
1229         int doc_width, doc_height;
1230         int page;
1231
1232         page = ev_link_dest_get_page (dest);
1233         ev_page_cache_get_size (view->page_cache, page, 0, 1.0, &doc_width, &doc_height);
1234
1235         zoom = zoom_for_size_best_fit (doc_width, doc_height, ev_view_get_width (view),
1236                                        ev_view_get_height (view), 0, 0);
1237
1238         ev_view_set_sizing_mode (view, EV_SIZING_BEST_FIT);
1239         ev_view_set_zoom (view, zoom, FALSE);
1240
1241         view->current_page = page;
1242         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1243
1244         gtk_widget_queue_resize (GTK_WIDGET (view));
1245 }
1246
1247 static void
1248 goto_xyz_dest (EvView *view, EvLinkDest *dest)
1249 {
1250         EvPoint doc_point;
1251         gint page;
1252         double zoom;
1253
1254         zoom = ev_link_dest_get_zoom (dest);
1255         page = ev_link_dest_get_page (dest);
1256
1257         if (zoom > 1) {
1258                 ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1259                 ev_view_set_zoom (view, zoom, FALSE);
1260         }
1261
1262         doc_point.x = ev_link_dest_get_left (dest);
1263         doc_point.y = ev_link_dest_get_top (dest);
1264
1265         view->current_page = page;
1266         view->pending_point = doc_point;
1267         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1268
1269         gtk_widget_queue_resize (GTK_WIDGET (view));
1270 }
1271
1272 static void
1273 goto_dest (EvView *view, EvLinkDest *dest)
1274 {
1275         EvLinkDestType type;
1276         int page, n_pages, current_page;
1277
1278         page = ev_link_dest_get_page (dest);
1279         n_pages = ev_page_cache_get_n_pages (view->page_cache);
1280
1281         if (page < 0 || page >= n_pages)
1282                 return;
1283
1284         current_page = view->current_page;
1285
1286         type = ev_link_dest_get_dest_type (dest);
1287
1288         switch (type) {
1289                 case EV_LINK_DEST_TYPE_PAGE:
1290                         ev_page_cache_set_current_page (view->page_cache, page);
1291                         break;
1292                 case EV_LINK_DEST_TYPE_FIT:
1293                         goto_fit_dest (view, dest);
1294                         break;
1295                 case EV_LINK_DEST_TYPE_FITH:
1296                         goto_fith_dest (view, dest);
1297                         break;
1298                 case EV_LINK_DEST_TYPE_FITV:
1299                         goto_fitv_dest (view, dest);
1300                         break;
1301                 case EV_LINK_DEST_TYPE_FITR:
1302                         goto_fitr_dest (view, dest);
1303                         break;
1304                 case EV_LINK_DEST_TYPE_XYZ:
1305                         goto_xyz_dest (view, dest);
1306                         break;
1307                 case EV_LINK_DEST_TYPE_PAGE_LABEL:
1308                         ev_page_cache_set_page_label (view->page_cache, ev_link_dest_get_page_label (dest));
1309                         break;
1310                 default:
1311                         g_assert_not_reached ();
1312         }
1313
1314         if (current_page != view->current_page)
1315                 ev_page_cache_set_current_page (view->page_cache,
1316                                                 view->current_page);
1317 }
1318
1319 void
1320 ev_view_goto_dest (EvView *view, EvLinkDest *dest)
1321 {
1322         EvLinkDestType type;
1323
1324         type = ev_link_dest_get_dest_type (dest);
1325
1326         if (type == EV_LINK_DEST_TYPE_NAMED) {
1327                 EvLinkDest  *dest2;
1328                 const gchar *named_dest;
1329
1330                 named_dest = ev_link_dest_get_named_dest (dest);
1331                 dest2 = ev_document_links_find_link_dest (EV_DOCUMENT_LINKS (view->document),
1332                                                           named_dest);
1333                 if (dest2) {
1334                         goto_dest (view, dest2);
1335                         g_object_unref (dest2);
1336                 }
1337
1338                 return;
1339         }
1340
1341         goto_dest (view, dest);
1342 }
1343
1344 void
1345 ev_view_handle_link (EvView *view, EvLink *link)
1346 {
1347         EvLinkAction    *action = NULL;
1348         EvLinkActionType type;
1349
1350         action = ev_link_get_action (link);
1351         if (!action)
1352                 return;
1353
1354         type = ev_link_action_get_action_type (action);
1355
1356         switch (type) {
1357                 case EV_LINK_ACTION_TYPE_GOTO_DEST: {
1358                         EvLinkDest *dest;
1359
1360                         dest = ev_link_action_get_dest (action);
1361                         ev_view_goto_dest (view, dest);
1362                 }
1363                         break;
1364                 case EV_LINK_ACTION_TYPE_GOTO_REMOTE:
1365                 case EV_LINK_ACTION_TYPE_EXTERNAL_URI:
1366                 case EV_LINK_ACTION_TYPE_LAUNCH:
1367                 case EV_LINK_ACTION_TYPE_NAMED:
1368                         g_signal_emit (view, signals[SIGNAL_EXTERNAL_LINK], 0, action);
1369                         break;
1370         }
1371 }
1372
1373 static gchar *
1374 page_label_from_dest (EvView *view, EvLinkDest *dest)
1375 {
1376         EvLinkDestType type;
1377         gchar *msg = NULL;
1378
1379         type = ev_link_dest_get_dest_type (dest);
1380
1381         switch (type) {
1382                 case EV_LINK_DEST_TYPE_NAMED: {
1383                         EvLinkDest  *dest2;
1384                         const gchar *named_dest;
1385
1386                         named_dest = ev_link_dest_get_named_dest (dest);
1387                         dest2 = ev_document_links_find_link_dest (EV_DOCUMENT_LINKS (view->document),
1388                                                                   named_dest);
1389                         if (dest2) {
1390                                 msg = ev_page_cache_get_page_label (view->page_cache,
1391                                                                     ev_link_dest_get_page (dest2));
1392                                 g_object_unref (dest2);
1393                         }
1394                 }
1395
1396                         break;
1397                 default:
1398                         msg = ev_page_cache_get_page_label (view->page_cache,
1399                                                             ev_link_dest_get_page (dest));
1400         }
1401
1402         return msg;
1403 }
1404
1405 static char *
1406 tip_from_action_named (EvLinkAction *action)
1407 {
1408         const gchar *name = ev_link_action_get_name (action);
1409
1410         if (g_ascii_strcasecmp (name, "FirstPage") == 0) {
1411                 return g_strdup (_("Go to first page"));
1412         } else if (g_ascii_strcasecmp (name, "PrevPage") == 0) {
1413                 return g_strdup (_("Go to previous page"));
1414         } else if (g_ascii_strcasecmp (name, "NextPage") == 0) {
1415                 return g_strdup (_("Go to next page"));
1416         } else if (g_ascii_strcasecmp (name, "LastPage") == 0) {
1417                 return g_strdup (_("Go to last page"));
1418         } else if (g_ascii_strcasecmp (name, "GoToPage") == 0) {
1419                 return g_strdup (_("Go to page"));
1420         } else if (g_ascii_strcasecmp (name, "Find") == 0) {
1421                 return g_strdup (_("Find"));
1422         }
1423
1424         return NULL;
1425 }
1426
1427 static char *
1428 tip_from_link (EvView *view, EvLink *link)
1429 {
1430         EvLinkAction *action;
1431         EvLinkActionType type;
1432         char *msg = NULL;
1433         char *page_label;
1434         const char *title;
1435
1436         action = ev_link_get_action (link);
1437         title = ev_link_get_title (link);
1438
1439         if (!action)
1440                 return title ? g_strdup (title) : NULL;
1441
1442         type = ev_link_action_get_action_type (action);
1443
1444         switch (type) {
1445                 case EV_LINK_ACTION_TYPE_GOTO_DEST:
1446                         page_label = page_label_from_dest (view,
1447                                                            ev_link_action_get_dest (action));
1448                         msg = g_strdup_printf (_("Go to page %s"), page_label);
1449                         g_free (page_label);
1450                         break;
1451                 case EV_LINK_ACTION_TYPE_GOTO_REMOTE:
1452                         if (title) {
1453                                 msg = g_strdup_printf (_("Go to %s on file “%s”"), title,
1454                                                        ev_link_action_get_filename (action));
1455                         } else {
1456                                 msg = g_strdup_printf (_("Go to file “%s”"),
1457                                                        ev_link_action_get_filename (action));
1458                         }
1459
1460                         break;
1461                 case EV_LINK_ACTION_TYPE_EXTERNAL_URI:
1462                         msg = g_strdup (ev_link_action_get_uri (action));
1463                         break;
1464                 case EV_LINK_ACTION_TYPE_LAUNCH:
1465                         msg = g_strdup_printf (_("Launch %s"),
1466                                                ev_link_action_get_filename (action));
1467                         break;
1468                 case EV_LINK_ACTION_TYPE_NAMED:
1469                         msg = tip_from_action_named (action);
1470                         break;
1471                 default:
1472                         if (title)
1473                                 msg = g_strdup (title);
1474                         break;
1475         }
1476
1477         return msg;
1478 }
1479
1480 static void
1481 handle_link_over_xy (EvView *view, gint x, gint y)
1482 {
1483         EvLink *link;
1484
1485         link = ev_view_get_link_at_location (view, x, y);
1486
1487         if (view->link_tooltip == NULL) {
1488                 view->link_tooltip = ev_tooltip_new (GTK_WIDGET (view));
1489         }
1490
1491         if (view->hovered_link != link) {
1492                 view->hovered_link = link;
1493                 ev_tooltip_deactivate (EV_TOOLTIP (view->link_tooltip));
1494         }
1495
1496         if (link) {
1497                 char *msg = tip_from_link (view, link);
1498
1499                 if (msg && g_utf8_validate (msg, -1, NULL)) {
1500                         EvTooltip *tooltip = EV_TOOLTIP (view->link_tooltip);
1501
1502                         ev_tooltip_set_position (tooltip, x, y);
1503                         ev_tooltip_set_text (tooltip, msg);
1504                         ev_tooltip_activate (tooltip);
1505                 }
1506                 g_free (msg);
1507
1508                 ev_view_set_cursor (view, EV_VIEW_CURSOR_LINK);
1509         } else if (location_in_text (view, x + view->scroll_x, y + view->scroll_y)) {
1510                 ev_view_set_cursor (view, EV_VIEW_CURSOR_IBEAM);
1511         } else {
1512                 ev_view_set_status (view, NULL);
1513                 if (view->cursor == EV_VIEW_CURSOR_LINK ||
1514                     view->cursor == EV_VIEW_CURSOR_IBEAM)
1515                         ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
1516         }
1517         return;
1518 }
1519
1520 /*** Images ***/
1521 static EvImage *
1522 ev_view_get_image_at_location (EvView  *view,
1523                                gdouble  x,
1524                                gdouble  y)
1525 {
1526         gint page = -1;
1527         gint x_offset = 0, y_offset = 0;
1528         gint x_new = 0, y_new = 0;
1529         GList *image_mapping;
1530
1531         if (!EV_IS_DOCUMENT_IMAGES (view->document))
1532                 return NULL;
1533
1534         x += view->scroll_x;
1535         y += view->scroll_y;
1536
1537         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1538
1539         if (page == -1)
1540                 return NULL;
1541
1542         if (get_doc_point_from_offset (view, page, x_offset,
1543                                        y_offset, &x_new, &y_new) == FALSE)
1544                 return NULL;
1545
1546         image_mapping = ev_pixbuf_cache_get_image_mapping (view->pixbuf_cache, page);
1547
1548         if (image_mapping)
1549                 return ev_image_mapping_find (image_mapping, x_new, y_new);
1550         else
1551                 return NULL;
1552 }
1553
1554 /*** GtkWidget implementation ***/
1555
1556 static void
1557 ev_view_size_request_continuous_dual_page (EvView         *view,
1558                                            GtkRequisition *requisition)
1559 {
1560         int max_width;
1561         gint n_pages;
1562         GtkBorder border;
1563
1564         ev_page_cache_get_max_width (view->page_cache, view->rotation,
1565                                      view->scale, &max_width);
1566         compute_border (view, max_width, max_width, &border);
1567
1568         n_pages = ev_page_cache_get_n_pages (view->page_cache) + 1;
1569
1570         requisition->width = (max_width + border.left + border.right) * 2 + (view->spacing * 3);
1571         get_page_y_offset (view, n_pages, view->scale, &requisition->height);
1572
1573         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
1574                 requisition->width = 1;
1575         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
1576                 requisition->width = 1;
1577                 /* FIXME: This could actually be set on one page docs or docs
1578                  * with a strange aspect ratio. */
1579                 /* requisition->height = 1;*/
1580         }
1581 }
1582
1583 static void
1584 ev_view_size_request_continuous (EvView         *view,
1585                                  GtkRequisition *requisition)
1586 {
1587         int max_width;
1588         int n_pages;
1589         GtkBorder border;
1590
1591
1592         ev_page_cache_get_max_width (view->page_cache, view->rotation,
1593                                      view->scale, &max_width);
1594         n_pages = ev_page_cache_get_n_pages (view->page_cache);
1595         compute_border (view, max_width, max_width, &border);
1596
1597         requisition->width = max_width + (view->spacing * 2) + border.left + border.right;
1598         get_page_y_offset (view, n_pages, view->scale, &requisition->height);
1599
1600         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
1601                 requisition->width = 1;
1602         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
1603                 requisition->width = 1;
1604                 /* FIXME: This could actually be set on one page docs or docs
1605                  * with a strange aspect ratio. */
1606                 /* requisition->height = 1;*/
1607         }
1608 }
1609
1610 static void
1611 ev_view_size_request_dual_page (EvView         *view,
1612                                 GtkRequisition *requisition)
1613 {
1614         GtkBorder border;
1615         gint width, height;
1616
1617         /* Find the largest of the two. */
1618         ev_page_cache_get_size (view->page_cache,
1619                                 view->current_page,
1620                                 view->rotation,
1621                                 view->scale,
1622                                 &width, &height);
1623         if (view->current_page + 1 < ev_page_cache_get_n_pages (view->page_cache)) {
1624                 gint width_2, height_2;
1625                 ev_page_cache_get_size (view->page_cache,
1626                                         view->current_page + 1,
1627                                         view->rotation,
1628                                         view->scale,
1629                                         &width_2, &height_2);
1630                 if (width_2 > width) {
1631                         width = width_2;
1632                         height = height_2;
1633                 }
1634         }
1635         compute_border (view, width, height, &border);
1636
1637         requisition->width = ((width + border.left + border.right) * 2) +
1638                 (view->spacing * 3);
1639         requisition->height = (height + border.top + border.bottom) +
1640                 (view->spacing * 2);
1641
1642         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
1643                 requisition->width = 1;
1644         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
1645                 requisition->width = 1;
1646                 requisition->height = 1;
1647         }
1648 }
1649
1650 static void
1651 ev_view_size_request_single_page (EvView         *view,
1652                                   GtkRequisition *requisition)
1653 {
1654         GtkBorder border;
1655         gint width, height;
1656
1657         ev_page_cache_get_size (view->page_cache,
1658                                 view->current_page,
1659                                 view->rotation,
1660                                 view->scale,
1661                                 &width, &height);
1662         compute_border (view, width, height, &border);
1663
1664         requisition->width = width + border.left + border.right + (2 * view->spacing);
1665         requisition->height = height + border.top + border.bottom + (2 * view->spacing);
1666
1667         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
1668                 requisition->width = 1;
1669                 requisition->height = height + border.top + border.bottom + (2 * view->spacing);
1670         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
1671                 requisition->width = 1;
1672                 requisition->height = 1;
1673         }
1674 }
1675
1676 static void
1677 ev_view_size_request (GtkWidget      *widget,
1678                       GtkRequisition *requisition)
1679 {
1680         EvView *view = EV_VIEW (widget);
1681
1682         if (view->document == NULL) {
1683                 requisition->width = 1;
1684                 requisition->height = 1;
1685                 return;
1686         }
1687
1688         if (view->presentation) {
1689                 requisition->width = 1;
1690                 requisition->height = 1;
1691                 return;
1692         }
1693
1694         if (view->continuous && view->dual_page)
1695                 ev_view_size_request_continuous_dual_page (view, requisition);
1696         else if (view->continuous)
1697                 ev_view_size_request_continuous (view, requisition);
1698         else if (view->dual_page)
1699                 ev_view_size_request_dual_page (view, requisition);
1700         else
1701                 ev_view_size_request_single_page (view, requisition);
1702 }
1703
1704 static void
1705 ev_view_size_allocate (GtkWidget      *widget,
1706                        GtkAllocation  *allocation)
1707 {
1708         EvView *view = EV_VIEW (widget);
1709
1710         if (view->sizing_mode == EV_SIZING_FIT_WIDTH ||
1711             view->sizing_mode == EV_SIZING_BEST_FIT) {
1712
1713                 g_signal_emit (view, signals[SIGNAL_ZOOM_INVALID], 0);
1714
1715                 ev_view_size_request (widget, &widget->requisition);
1716         }
1717
1718         view_set_adjustment_values (view, GTK_ORIENTATION_HORIZONTAL);
1719         view_set_adjustment_values (view, GTK_ORIENTATION_VERTICAL);
1720
1721         if (view->document)
1722                 view_update_range_and_current_page (view);
1723
1724         view->pending_scroll = SCROLL_TO_KEEP_POSITION;
1725         view->pending_resize = FALSE;
1726
1727         GTK_WIDGET_CLASS (ev_view_parent_class)->size_allocate (widget, allocation);
1728 }
1729
1730 static void
1731 ev_view_realize (GtkWidget *widget)
1732 {
1733         EvView *view = EV_VIEW (widget);
1734         GdkWindowAttr attributes;
1735
1736         GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
1737
1738         attributes.window_type = GDK_WINDOW_CHILD;
1739         attributes.wclass = GDK_INPUT_OUTPUT;
1740         attributes.visual = gtk_widget_get_visual (widget);
1741         attributes.colormap = gtk_widget_get_colormap (widget);
1742
1743         attributes.x = widget->allocation.x;
1744         attributes.y = widget->allocation.y;
1745         attributes.width = widget->allocation.width;
1746         attributes.height = widget->allocation.height;
1747         attributes.event_mask = GDK_EXPOSURE_MASK |
1748                                 GDK_BUTTON_PRESS_MASK |
1749                                 GDK_BUTTON_RELEASE_MASK |
1750                                 GDK_SCROLL_MASK |
1751                                 GDK_KEY_PRESS_MASK |
1752                                 GDK_POINTER_MOTION_MASK |
1753                                 GDK_POINTER_MOTION_HINT_MASK |
1754                                 GDK_ENTER_NOTIFY_MASK |
1755                                 GDK_LEAVE_NOTIFY_MASK;
1756
1757         widget->window = gdk_window_new (gtk_widget_get_parent_window (widget),
1758                                          &attributes,
1759                                          GDK_WA_X | GDK_WA_Y |
1760                                          GDK_WA_COLORMAP |
1761                                          GDK_WA_VISUAL);
1762         gdk_window_set_user_data (widget->window, widget);
1763         widget->style = gtk_style_attach (widget->style, widget->window);
1764
1765         if (view->presentation)
1766                 gdk_window_set_background (widget->window, &widget->style->black);
1767         else
1768                 gdk_window_set_background (widget->window, &widget->style->mid [GTK_STATE_NORMAL]);
1769 }
1770
1771 static gboolean
1772 ev_view_scroll_event (GtkWidget *widget, GdkEventScroll *event)
1773 {
1774         EvView *view = EV_VIEW (widget);
1775         guint state;
1776
1777         state = event->state & gtk_accelerator_get_default_mod_mask ();
1778
1779         if (state == GDK_CONTROL_MASK && view->presentation == FALSE) {
1780                 ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1781
1782                 if (event->direction == GDK_SCROLL_UP ||
1783                     event->direction == GDK_SCROLL_LEFT) {
1784                         if (ev_view_can_zoom_in (view)) {
1785                                 ev_view_zoom_in (view);
1786                         }
1787                 } else {
1788                         if (ev_view_can_zoom_out (view)) {
1789                                 ev_view_zoom_out (view);
1790                         }
1791                 }
1792
1793                 return TRUE;
1794         }
1795
1796         view->jump_to_find_result = FALSE;
1797         /* Shift+Wheel scrolls the in the perpendicular direction */
1798         if (state & GDK_SHIFT_MASK) {
1799                 if (event->direction == GDK_SCROLL_UP)
1800                         event->direction = GDK_SCROLL_LEFT;
1801                 if (event->direction == GDK_SCROLL_LEFT)
1802                         event->direction = GDK_SCROLL_UP;
1803                 if (event->direction == GDK_SCROLL_DOWN)
1804                         event->direction = GDK_SCROLL_RIGHT;
1805                 if (event->direction == GDK_SCROLL_RIGHT)
1806                         event->direction = GDK_SCROLL_DOWN;
1807
1808                 event->state &= ~GDK_SHIFT_MASK;
1809                 state &= ~GDK_SHIFT_MASK;
1810         }
1811
1812         if (state == 0 && view->presentation) {
1813                 switch (event->direction) {
1814                         case GDK_SCROLL_DOWN:
1815                         case GDK_SCROLL_RIGHT:
1816                                 ev_view_next_page (view);
1817                                 break;
1818                         case GDK_SCROLL_UP:
1819                         case GDK_SCROLL_LEFT:
1820                                 ev_view_previous_page (view);
1821                                 break;
1822                 }
1823
1824                 return TRUE;
1825         }
1826
1827         return FALSE;
1828 }
1829
1830 static EvViewSelection *
1831 find_selection_for_page (EvView *view,
1832                          gint    page)
1833 {
1834         GList *list;
1835
1836         for (list = view->selection_info.selections; list != NULL; list = list->next) {
1837                 EvViewSelection *selection;
1838
1839                 selection = (EvViewSelection *) list->data;
1840
1841                 if (selection->page == page)
1842                         return selection;
1843         }
1844
1845         return NULL;
1846 }
1847
1848 static void
1849 draw_end_presentation_page (EvView       *view,
1850                             GdkRectangle *page_area)
1851 {
1852         PangoLayout *layout;
1853         PangoFontDescription *font_desc;
1854         gchar *markup;
1855         const gchar *text = _("End of presentation. Press Escape to exit.");
1856
1857         if (view->presentation_state != EV_PRESENTATION_END)
1858                 return;
1859
1860         layout = gtk_widget_create_pango_layout (GTK_WIDGET (view), NULL);
1861         markup = g_strdup_printf ("<span foreground=\"white\">%s</span>", text);
1862         pango_layout_set_markup (layout, markup, -1);
1863         g_free (markup);
1864
1865         font_desc = pango_font_description_new ();
1866         pango_font_description_set_size (font_desc, 16 * PANGO_SCALE);
1867         pango_layout_set_font_description (layout, font_desc);
1868
1869         gtk_paint_layout (GTK_WIDGET (view)->style,
1870                           GTK_WIDGET (view)->window,
1871                           GTK_WIDGET_STATE (view),
1872                           FALSE,
1873                           page_area,
1874                           GTK_WIDGET (view),
1875                           NULL,
1876                           page_area->x + 15,
1877                           page_area->y + 15,
1878                           layout);
1879
1880         pango_font_description_free (font_desc);
1881         g_object_unref (layout);
1882 }
1883
1884 static gboolean
1885 ev_view_expose_event (GtkWidget      *widget,
1886                       GdkEventExpose *event)
1887 {
1888         EvView *view = EV_VIEW (widget);
1889         int i;
1890
1891         if (view->presentation) {
1892                 switch (view->presentation_state) {
1893                         case EV_PRESENTATION_END: {
1894                                 GdkRectangle area = {0};
1895
1896                                 area.width = widget->allocation.width;
1897                                 area.height = widget->allocation.height;
1898
1899                                 draw_end_presentation_page (view, &area);
1900                         }
1901                                 return FALSE;
1902                         case EV_PRESENTATION_BLACK:
1903                         case EV_PRESENTATION_WHITE:
1904                                 return FALSE;
1905                         case EV_PRESENTATION_NORMAL:
1906                         default:
1907                                 break;
1908                 }
1909         }
1910
1911         if (view->loading) {
1912                 GdkRectangle area = {0};
1913
1914                 area.width = widget->allocation.width;
1915                 area.height = widget->allocation.height;
1916
1917                 draw_loading_text (view,
1918                                    &area,
1919                                    &(event->area));
1920         }
1921
1922         if (view->document == NULL)
1923                 return FALSE;
1924
1925         for (i = view->start_page; i <= view->end_page; i++) {
1926                 GdkRectangle page_area;
1927                 GtkBorder border;
1928                 gboolean page_ready = TRUE;
1929
1930                 if (!get_page_extents (view, i, &page_area, &border))
1931                         continue;
1932
1933                 page_area.x -= view->scroll_x;
1934                 page_area.y -= view->scroll_y;
1935
1936                 draw_one_page (view, i, &page_area, &border, &(event->area), &page_ready);
1937
1938                 if (page_ready && EV_IS_DOCUMENT_FIND (view->document))
1939                         highlight_find_results (view, i);
1940         }
1941
1942         return FALSE;
1943 }
1944
1945 static gboolean
1946 ev_view_do_popup_menu (EvView *view,
1947                        gdouble x,
1948                        gdouble y)
1949 {
1950         EvLink  *link;
1951         EvImage *image;
1952
1953         image = ev_view_get_image_at_location (view, x, y);
1954         if (image) {
1955                 g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, image);
1956                 return TRUE;
1957         }
1958
1959         link = ev_view_get_link_at_location (view, x, y);
1960         if (link) {
1961                 g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, link);
1962                 return TRUE;
1963         }
1964
1965         g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, NULL);
1966
1967         return TRUE;
1968 }
1969
1970 static gboolean
1971 ev_view_popup_menu (GtkWidget *widget)
1972 {
1973         gint x, y;
1974
1975         gtk_widget_get_pointer (widget, &x, &y);
1976         return ev_view_do_popup_menu (EV_VIEW (widget), x, y);
1977 }
1978
1979 static gboolean
1980 ev_view_button_press_event (GtkWidget      *widget,
1981                             GdkEventButton *event)
1982 {
1983         EvView *view = EV_VIEW (widget);
1984
1985         if (!GTK_WIDGET_HAS_FOCUS (widget)) {
1986                 gtk_widget_grab_focus (widget);
1987         }
1988
1989         view->pressed_button = event->button;
1990         view->selection_info.in_drag = FALSE;
1991
1992         switch (event->button) {
1993                 case 1: {
1994                         EvImage *image;
1995
1996                         if (view->selection_info.selections) {
1997                                 if (location_in_selected_text (view,
1998                                                                event->x + view->scroll_x,
1999                                                                event->y + view->scroll_y)) {
2000                                         view->selection_info.in_drag = TRUE;
2001                                 } else {
2002                                         clear_selection (view);
2003                                 }
2004
2005                                 gtk_widget_queue_draw (widget);
2006                         } else if ((image = ev_view_get_image_at_location (view, event->x, event->y))) {
2007                                 if (view->image_dnd_info.image)
2008                                         g_object_unref (view->image_dnd_info.image);
2009                                 view->image_dnd_info.image = g_object_ref (image);
2010                                 view->image_dnd_info.in_drag = TRUE;
2011
2012                                 view->image_dnd_info.start.x = event->x + view->scroll_x;
2013                                 view->image_dnd_info.start.y = event->y + view->scroll_y;
2014                         }
2015
2016                         view->selection_info.start.x = event->x + view->scroll_x;
2017                         view->selection_info.start.y = event->y + view->scroll_y;
2018                 }
2019                         return TRUE;
2020                 case 2:
2021                         /* use root coordinates as reference point because
2022                          * scrolling changes window relative coordinates */
2023                         view->drag_info.start.x = event->x_root;
2024                         view->drag_info.start.y = event->y_root;
2025                         view->drag_info.hadj = gtk_adjustment_get_value (view->hadjustment);
2026                         view->drag_info.vadj = gtk_adjustment_get_value (view->vadjustment);
2027
2028                         ev_view_set_cursor (view, EV_VIEW_CURSOR_DRAG);
2029
2030                         return TRUE;
2031                 case 3:
2032                         return ev_view_do_popup_menu (view, event->x, event->y);
2033         }
2034
2035         return FALSE;
2036 }
2037
2038 /*** Drag and Drop ***/
2039 static void
2040 ev_view_drag_data_get (GtkWidget        *widget,
2041                        GdkDragContext   *context,
2042                        GtkSelectionData *selection_data,
2043                        guint             info,
2044                        guint             time)
2045 {
2046         EvView *view = EV_VIEW (widget);
2047
2048         switch (info) {
2049                 case TARGET_DND_TEXT:
2050                         if (view->selection_info.selections &&
2051                             ev_document_can_get_text (view->document)) {
2052                                 gchar *text;
2053
2054                                 text = get_selected_text (view);
2055
2056                                 gtk_selection_data_set_text (selection_data,
2057                                                              text,
2058                                                              strlen (text));
2059
2060                                 g_free (text);
2061                         }
2062                         break;
2063                 case TARGET_DND_IMAGE:
2064                         if (view->image_dnd_info.image) {
2065                                 GdkPixbuf *pixbuf;
2066
2067                                 pixbuf = ev_image_get_pixbuf (view->image_dnd_info.image);
2068                                 gtk_selection_data_set_pixbuf (selection_data, pixbuf);
2069                         }
2070                         break;
2071                 case TARGET_DND_URI:
2072                         if (view->image_dnd_info.image) {
2073                                 const gchar *tmp_uri;
2074                                 gchar      **uris;
2075
2076                                 tmp_uri = ev_image_save_tmp (view->image_dnd_info.image);
2077
2078                                 uris = g_new0 (gchar *, 2);
2079                                 uris[0] = (gchar *)tmp_uri;
2080
2081                                 gtk_selection_data_set_uris (selection_data, uris);
2082
2083                                 /* g_free instead of g_strfreev since tmp_uri is const */
2084                                 g_free (uris);
2085                         }
2086         }
2087 }
2088
2089 static gboolean
2090 ev_view_drag_motion (GtkWidget      *widget,
2091                      GdkDragContext *context,
2092                      gint            x,
2093                      gint            y,
2094                      guint           time)
2095 {
2096         if (gtk_drag_get_source_widget (context) == widget)
2097                 gdk_drag_status (context, 0, time);
2098         else
2099                 gdk_drag_status (context, context->suggested_action, time);
2100
2101         return TRUE;
2102 }
2103
2104 static void
2105 ev_view_drag_data_received (GtkWidget          *widget,
2106                             GdkDragContext     *context,
2107                             gint                x,
2108                             gint                y,
2109                             GtkSelectionData   *selection_data,
2110                             guint               info,
2111                             guint               time)
2112 {
2113         gchar  **uris;
2114         gint     i = 0;
2115         GSList  *uri_list = NULL;
2116
2117         uris = gtk_selection_data_get_uris (selection_data);
2118         if (!uris) {
2119                 gtk_drag_finish (context, FALSE, FALSE, time);
2120                 return;
2121         }
2122
2123         for (i = 0; uris[i]; i++) {
2124                 uri_list = g_slist_prepend (uri_list, (gpointer) uris[i]);
2125         }
2126
2127         ev_application_open_uri_list (EV_APP, uri_list,
2128                                       gtk_widget_get_screen (widget),
2129                                       0);
2130         gtk_drag_finish (context, TRUE, FALSE, time);
2131
2132         g_strfreev (uris);
2133         g_slist_free (uri_list);
2134 }
2135
2136
2137 static gboolean
2138 selection_update_idle_cb (EvView *view)
2139 {
2140         compute_selections (view, &view->selection_info.start, &view->motion);
2141         view->selection_update_id = 0;
2142         return FALSE;
2143 }
2144
2145 static gboolean
2146 selection_scroll_timeout_cb (EvView *view)
2147 {
2148         gint x, y, shift = 0;
2149         GtkWidget *widget = GTK_WIDGET (view);
2150
2151         gtk_widget_get_pointer (widget, &x, &y);
2152
2153         if (y > widget->allocation.height) {
2154                 shift = (y - widget->allocation.height) / 2;
2155         } else if (y < 0) {
2156                 shift = y / 2;
2157         }
2158
2159         if (shift)
2160                 gtk_adjustment_set_value (view->vadjustment,
2161                                           CLAMP (view->vadjustment->value + shift,
2162                                           view->vadjustment->lower,
2163                                           view->vadjustment->upper -
2164                                           view->vadjustment->page_size));
2165
2166         if (x > widget->allocation.width) {
2167                 shift = (x - widget->allocation.width) / 2;
2168         } else if (x < 0) {
2169                 shift = x / 2;
2170         }
2171
2172         if (shift)
2173                 gtk_adjustment_set_value (view->hadjustment,
2174                                           CLAMP (view->hadjustment->value + shift,
2175                                           view->hadjustment->lower,
2176                                           view->hadjustment->upper -
2177                                           view->hadjustment->page_size));
2178
2179         return TRUE;
2180 }
2181
2182 static gboolean
2183 ev_view_motion_notify_event (GtkWidget      *widget,
2184                              GdkEventMotion *event)
2185 {
2186         EvView *view = EV_VIEW (widget);
2187         gint x, y;
2188
2189         if (!view->document)
2190                 return FALSE;
2191
2192         if (event->is_hint || event->window != widget->window) {
2193             gtk_widget_get_pointer (widget, &x, &y);
2194         } else {
2195             x = event->x;
2196             y = event->y;
2197         }
2198
2199         if (view->selection_info.in_drag) {
2200                 if (gtk_drag_check_threshold (widget,
2201                                               view->selection_info.start.x,
2202                                               view->selection_info.start.y,
2203                                               x, y)) {
2204                         GtkTargetList *target_list = gtk_target_list_new (NULL, 0);
2205
2206                         gtk_target_list_add_text_targets (target_list, TARGET_DND_TEXT);
2207
2208                         gtk_drag_begin (widget, target_list,
2209                                         GDK_ACTION_COPY,
2210                                         1, (GdkEvent *)event);
2211
2212                         view->selection_info.in_drag = FALSE;
2213
2214                         gtk_target_list_unref (target_list);
2215
2216                         return TRUE;
2217                 }
2218         } else if (view->image_dnd_info.in_drag) {
2219                 if (gtk_drag_check_threshold (widget,
2220                                               view->selection_info.start.x,
2221                                               view->selection_info.start.y,
2222                                               x, y)) {
2223                         GtkTargetList *target_list = gtk_target_list_new (NULL, 0);
2224
2225                         gtk_target_list_add_uri_targets (target_list, TARGET_DND_URI);
2226                         gtk_target_list_add_image_targets (target_list, TARGET_DND_IMAGE, TRUE);
2227
2228                         gtk_drag_begin (widget, target_list,
2229                                         GDK_ACTION_COPY,
2230                                         1, (GdkEvent *)event);
2231
2232                         view->image_dnd_info.in_drag = FALSE;
2233
2234                         gtk_target_list_unref (target_list);
2235
2236                         return TRUE;
2237                 }
2238         }
2239
2240         /* For the Evince 0.4.x release, we limit selection to un-rotated
2241          * documents only.
2242          */
2243         if (view->pressed_button == 1 && view->rotation == 0) {
2244
2245                 /* Schedule timeout to scroll during selection and additionally
2246                  * scroll once to allow arbitrary speed. */
2247                 if (!view->selection_scroll_id)
2248                     view->selection_scroll_id = g_timeout_add (SCROLL_TIME, (GSourceFunc)selection_scroll_timeout_cb, view);
2249                 else
2250                     selection_scroll_timeout_cb (view);
2251
2252                 view->selection_info.in_selection = TRUE;
2253                 view->motion.x = x + view->scroll_x;
2254                 view->motion.y = y + view->scroll_y;
2255
2256                 /* Queue an idle to handle the motion.  We do this because
2257                  * handling any selection events in the motion could be slower
2258                  * than new motion events reach us.  We always put it in the
2259                  * idle to make sure we catch up and don't visibly lag the
2260                  * mouse. */
2261                 if (!view->selection_update_id)
2262                         view->selection_update_id = g_idle_add ((GSourceFunc)selection_update_idle_cb, view);
2263
2264                 return TRUE;
2265         } else if (view->pressed_button == 2) {
2266                 if (!view->drag_info.in_drag) {
2267                         gboolean start;
2268
2269                         start = gtk_drag_check_threshold (widget,
2270                                                           view->drag_info.start.x,
2271                                                           view->drag_info.start.y,
2272                                                           event->x_root,
2273                                                           event->y_root);
2274                         view->drag_info.in_drag = start;
2275                 }
2276
2277                 if (view->drag_info.in_drag) {
2278                         int dx, dy;
2279                         gdouble dhadj_value, dvadj_value;
2280
2281                         dx = event->x_root - view->drag_info.start.x;
2282                         dy = event->y_root - view->drag_info.start.y;
2283
2284                         dhadj_value = view->hadjustment->page_size *
2285                                       (gdouble)dx / widget->allocation.width;
2286                         dvadj_value = view->vadjustment->page_size *
2287                                       (gdouble)dy / widget->allocation.height;
2288
2289                         /* clamp scrolling to visible area */
2290                         gtk_adjustment_set_value (view->hadjustment,
2291                                                   MIN(view->drag_info.hadj - dhadj_value,
2292                                                       view->hadjustment->upper -
2293                                                       view->hadjustment->page_size));
2294                         gtk_adjustment_set_value (view->vadjustment,
2295                                                   MIN(view->drag_info.vadj - dvadj_value,
2296                                                       view->vadjustment->upper -
2297                                                       view->vadjustment->page_size));
2298
2299                         return TRUE;
2300                 }
2301         } else if (view->pressed_button <= 0) {
2302                 handle_link_over_xy (view, x, y);
2303                 return TRUE;
2304         }
2305
2306         return FALSE;
2307 }
2308
2309 static gboolean
2310 ev_view_button_release_event (GtkWidget      *widget,
2311                               GdkEventButton *event)
2312 {
2313         EvView *view = EV_VIEW (widget);
2314         EvLink *link;
2315
2316         if (view->pressed_button == 2) {
2317                 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
2318         }
2319
2320         if (view->document && view->pressed_button == 1) {
2321                 link = ev_view_get_link_at_location (view, event->x, event->y);
2322         } else {
2323                 link = NULL;
2324         }
2325
2326         view->pressed_button = -1;
2327         view->drag_info.in_drag = FALSE;
2328         view->image_dnd_info.in_drag = FALSE;
2329
2330         if (view->selection_scroll_id) {
2331             g_source_remove (view->selection_scroll_id);
2332             view->selection_scroll_id = 0;
2333         }
2334         if (view->selection_update_id) {
2335             g_source_remove (view->selection_update_id);
2336             view->selection_update_id = 0;
2337         }
2338
2339         if (view->selection_info.selections) {
2340                 ev_view_update_primary_selection (view);
2341
2342                 if (view->selection_info.in_drag) {
2343                         clear_selection (view);
2344                         gtk_widget_queue_draw (widget);
2345                 }
2346
2347                 view->selection_info.in_drag = FALSE;
2348         } else if (link) {
2349                 ev_view_handle_link (view, link);
2350         } else if (view->presentation) {
2351                 switch (event->button) {
2352                         case 1:
2353                                 ev_view_next_page (view);
2354                                 return TRUE;
2355                         case 3:
2356                                 ev_view_previous_page (view);
2357                                 return TRUE;
2358                 }
2359         }
2360
2361         return FALSE;
2362 }
2363
2364 /* Goto Window */
2365 /* Cut and paste from gtkwindow.c */
2366 static void
2367 send_focus_change (GtkWidget *widget,
2368                    gboolean   in)
2369 {
2370         GdkEvent *fevent = gdk_event_new (GDK_FOCUS_CHANGE);
2371
2372         g_object_ref (widget);
2373
2374         if (in)
2375                 GTK_WIDGET_SET_FLAGS (widget, GTK_HAS_FOCUS);
2376         else
2377                 GTK_WIDGET_UNSET_FLAGS (widget, GTK_HAS_FOCUS);
2378
2379         fevent->focus_change.type = GDK_FOCUS_CHANGE;
2380         fevent->focus_change.window = g_object_ref (widget->window);
2381         fevent->focus_change.in = in;
2382
2383         gtk_widget_event (widget, fevent);
2384
2385         g_object_notify (G_OBJECT (widget), "has-focus");
2386
2387         g_object_unref (widget);
2388         gdk_event_free (fevent);
2389 }
2390
2391 static void
2392 ev_view_goto_window_hide (EvView *view)
2393 {
2394         /* send focus-in event */
2395         send_focus_change (view->goto_entry, FALSE);
2396         gtk_widget_hide (view->goto_window);
2397         gtk_entry_set_text (GTK_ENTRY (view->goto_entry), "");
2398 }
2399
2400 static gboolean
2401 ev_view_goto_window_delete_event (GtkWidget   *widget,
2402                                   GdkEventAny *event,
2403                                   EvView      *view)
2404 {
2405         ev_view_goto_window_hide (view);
2406
2407         return TRUE;
2408 }
2409
2410 static gboolean
2411 key_is_numeric (guint keyval)
2412 {
2413         return ((keyval >= GDK_0 && keyval <= GDK_9) ||
2414                 (keyval >= GDK_KP_0 && keyval <= GDK_KP_9));
2415 }
2416
2417 static gboolean
2418 ev_view_goto_window_key_press_event (GtkWidget   *widget,
2419                                      GdkEventKey *event,
2420                                      EvView      *view)
2421 {
2422         switch (event->keyval) {
2423                 case GDK_Escape:
2424                 case GDK_Tab:
2425                 case GDK_KP_Tab:
2426                 case GDK_ISO_Left_Tab:
2427                         ev_view_goto_window_hide (view);
2428                         return TRUE;
2429                 case GDK_Return:
2430                 case GDK_KP_Enter:
2431                 case GDK_ISO_Enter:
2432                         return FALSE;
2433                 default:
2434                         if (!key_is_numeric (event->keyval))
2435                                 return TRUE;
2436         }
2437
2438         return FALSE;
2439 }
2440
2441 static gboolean
2442 ev_view_goto_window_button_press_event (GtkWidget      *widget,
2443                                         GdkEventButton *event,
2444                                         EvView         *view)
2445 {
2446         ev_view_goto_window_hide (view);
2447
2448         return TRUE;
2449 }
2450
2451 static void
2452 ev_view_goto_entry_activate (GtkEntry *entry,
2453                              EvView   *view)
2454 {
2455         const gchar *text;
2456         gint         page;
2457
2458         text = gtk_entry_get_text (entry);
2459         page = atoi (text) - 1;
2460
2461         ev_view_goto_window_hide (view);
2462
2463         if (page >= 0 &&
2464             page < ev_page_cache_get_n_pages (view->page_cache))
2465                 ev_page_cache_set_current_page (view->page_cache, page);
2466 }
2467
2468 static void
2469 ev_view_goto_window_create (EvView *view)
2470 {
2471         GtkWidget *frame, *hbox, *toplevel, *label;
2472
2473         toplevel = gtk_widget_get_toplevel (GTK_WIDGET (view));
2474
2475         if (view->goto_window) {
2476                 if (GTK_WINDOW (toplevel)->group)
2477                         gtk_window_group_add_window (GTK_WINDOW (toplevel)->group,
2478                                                      GTK_WINDOW (view->goto_window));
2479                 else if (GTK_WINDOW (view->goto_window)->group)
2480                         gtk_window_group_remove_window (GTK_WINDOW (view->goto_window)->group,
2481                                                         GTK_WINDOW (view->goto_window));
2482                 return;
2483         }
2484
2485         view->goto_window = gtk_window_new (GTK_WINDOW_POPUP);
2486
2487         if (GTK_WINDOW (toplevel)->group)
2488                 gtk_window_group_add_window (GTK_WINDOW (toplevel)->group,
2489                                              GTK_WINDOW (view->goto_window));
2490
2491         gtk_window_set_modal (GTK_WINDOW (view->goto_window), TRUE);
2492
2493         g_signal_connect (view->goto_window, "delete_event",
2494                           G_CALLBACK (ev_view_goto_window_delete_event),
2495                           view);
2496         g_signal_connect (view->goto_window, "key_press_event",
2497                           G_CALLBACK (ev_view_goto_window_key_press_event),
2498                           view);
2499         g_signal_connect (view->goto_window, "button_press_event",
2500                           G_CALLBACK (ev_view_goto_window_button_press_event),
2501                           view);
2502
2503         frame = gtk_frame_new (NULL);
2504         gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_ETCHED_IN);
2505         gtk_container_add (GTK_CONTAINER (view->goto_window), frame);
2506         gtk_widget_show (frame);
2507
2508         hbox = gtk_hbox_new (FALSE, 0);
2509         gtk_container_set_border_width (GTK_CONTAINER (hbox), 3);
2510         gtk_container_add (GTK_CONTAINER (frame), hbox);
2511         gtk_widget_show (hbox);
2512
2513         label = gtk_label_new(_("Jump to page:"));
2514         gtk_box_pack_start (GTK_BOX (hbox), label, TRUE, TRUE, 3);
2515         gtk_widget_show (label);
2516         gtk_widget_realize (label);
2517
2518         view->goto_entry = gtk_entry_new ();
2519         g_signal_connect (view->goto_entry, "activate",
2520                           G_CALLBACK (ev_view_goto_entry_activate),
2521                           view);
2522         gtk_box_pack_start_defaults (GTK_BOX (hbox), view->goto_entry);
2523         gtk_widget_show (view->goto_entry);
2524         gtk_widget_realize (view->goto_entry);
2525 }
2526
2527 static void
2528 ev_view_goto_entry_grab_focus (EvView *view)
2529 {
2530         GtkWidgetClass *entry_parent_class;
2531
2532         entry_parent_class = g_type_class_peek_parent (GTK_ENTRY_GET_CLASS (view->goto_entry));
2533         (entry_parent_class->grab_focus) (view->goto_entry);
2534
2535         send_focus_change (view->goto_entry, TRUE);
2536 }
2537
2538 static void
2539 ev_view_goto_window_send_key_event (EvView   *view,
2540                                     GdkEvent *event)
2541 {
2542         GdkEventKey *new_event;
2543         GdkScreen   *screen;
2544
2545         /* Move goto window off screen */
2546         screen = gtk_widget_get_screen (GTK_WIDGET (view));
2547         gtk_window_move (GTK_WINDOW (view->goto_window),
2548                          gdk_screen_get_width (screen) + 1,
2549                          gdk_screen_get_height (screen) + 1);
2550         gtk_widget_show (view->goto_window);
2551
2552         new_event = (GdkEventKey *) gdk_event_copy (event);
2553         g_object_unref (new_event->window);
2554         new_event->window = g_object_ref (view->goto_window->window);
2555         gtk_widget_realize (view->goto_window);
2556
2557         gtk_widget_event (view->goto_window, (GdkEvent *)new_event);
2558         gdk_event_free ((GdkEvent *)new_event);
2559         gtk_widget_hide (view->goto_window);
2560 }
2561
2562 static gboolean
2563 ev_view_key_press_event (GtkWidget   *widget,
2564                          GdkEventKey *event)
2565 {
2566         EvView *view = EV_VIEW (widget);
2567         EvPresentationState current;
2568
2569         if (!view->presentation ||
2570             view->presentation_state == EV_PRESENTATION_END)
2571                 return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
2572
2573
2574         current = view->presentation_state;
2575
2576         switch (event->keyval) {
2577                 case GDK_b:
2578                 case GDK_B:
2579                         view->presentation_state =
2580                                 (view->presentation_state == EV_PRESENTATION_BLACK) ?
2581                                 EV_PRESENTATION_NORMAL : EV_PRESENTATION_BLACK;
2582                         break;
2583                 case GDK_w:
2584                 case GDK_W:
2585                         view->presentation_state =
2586                                 (view->presentation_state == EV_PRESENTATION_WHITE) ?
2587                                 EV_PRESENTATION_NORMAL : EV_PRESENTATION_WHITE;
2588                         break;
2589                 default:
2590                         if (view->presentation_state == EV_PRESENTATION_BLACK ||
2591                             view->presentation_state == EV_PRESENTATION_WHITE) {
2592                                 view->presentation_state = EV_PRESENTATION_NORMAL;
2593                         }
2594         }
2595
2596         if (current == view->presentation_state) {
2597                 if (ev_page_cache_get_n_pages (view->page_cache) > 1 &&
2598                     key_is_numeric (event->keyval)) {
2599                         gint x, y;
2600
2601                         ev_view_goto_window_create (view);
2602                         ev_view_goto_window_send_key_event (view, (GdkEvent *)event);
2603                         gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
2604                         gtk_window_move (GTK_WINDOW (view->goto_window), x, y);
2605                         gtk_widget_show (view->goto_window);
2606                         ev_view_goto_entry_grab_focus (view);
2607
2608                         return TRUE;
2609                 }
2610
2611                 return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
2612         }
2613
2614         switch (view->presentation_state) {
2615                 case EV_PRESENTATION_NORMAL:
2616                 case EV_PRESENTATION_BLACK:
2617                         gdk_window_set_background (widget->window,
2618                                                    &widget->style->black);
2619                         break;
2620                 case EV_PRESENTATION_WHITE:
2621                         gdk_window_set_background (widget->window,
2622                                                    &widget->style->white);
2623                         break;
2624                 default:
2625                         return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
2626         }
2627
2628         gtk_widget_queue_draw (widget);
2629         return TRUE;
2630 }
2631
2632 static gint
2633 ev_view_focus_in (GtkWidget     *widget,
2634                   GdkEventFocus *event)
2635 {
2636         if (EV_VIEW (widget)->pixbuf_cache)
2637                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
2638         gtk_widget_queue_draw (widget);
2639
2640         return FALSE;
2641 }
2642
2643 static gint
2644 ev_view_focus_out (GtkWidget     *widget,
2645                      GdkEventFocus *event)
2646 {
2647         if (EV_VIEW (widget)->goto_window)
2648                 ev_view_goto_window_hide (EV_VIEW (widget));
2649
2650         if (EV_VIEW (widget)->pixbuf_cache)
2651                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
2652         gtk_widget_queue_draw (widget);
2653
2654         return FALSE;
2655 }
2656
2657 static gboolean
2658 ev_view_leave_notify_event (GtkWidget *widget, GdkEventCrossing   *event)
2659 {
2660         EvView *view = EV_VIEW (widget);
2661
2662         ev_view_set_status (view, NULL);
2663
2664         if (view->cursor == EV_VIEW_CURSOR_LINK ||
2665             view->cursor == EV_VIEW_CURSOR_IBEAM)
2666                 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
2667
2668         if (view->link_tooltip) {
2669                 view->hovered_link = NULL;
2670                 ev_tooltip_deactivate (EV_TOOLTIP (view->link_tooltip));
2671         }
2672
2673         return FALSE;
2674 }
2675
2676 static gboolean
2677 ev_view_enter_notify_event (GtkWidget *widget, GdkEventCrossing   *event)
2678 {
2679         EvView *view = EV_VIEW (widget);
2680
2681         handle_link_over_xy (view, event->x, event->y);
2682
2683         return FALSE;
2684 }
2685
2686 static void
2687 ev_view_style_set (GtkWidget *widget,
2688                    GtkStyle  *old_style)
2689 {
2690         if (EV_VIEW (widget)->pixbuf_cache)
2691                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
2692
2693         GTK_WIDGET_CLASS (ev_view_parent_class)->style_set (widget, old_style);
2694 }
2695
2696 /*** Drawing ***/
2697
2698 static guint32
2699 ev_gdk_color_to_rgb (const GdkColor *color)
2700 {
2701   guint32 result;
2702   result = (0xff0000 | (color->red & 0xff00));
2703   result <<= 8;
2704   result |= ((color->green & 0xff00) | (color->blue >> 8));
2705   return result;
2706 }
2707
2708 static void
2709 draw_rubberband (GtkWidget *widget, GdkWindow *window,
2710                  const GdkRectangle *rect, guchar alpha)
2711 {
2712         GdkGC *gc;
2713         GdkPixbuf *pixbuf;
2714         GdkColor *fill_color_gdk;
2715         guint fill_color;
2716
2717         fill_color_gdk = gdk_color_copy (&GTK_WIDGET (widget)->style->base[GTK_STATE_SELECTED]);
2718         fill_color = ev_gdk_color_to_rgb (fill_color_gdk) << 8 | alpha;
2719
2720         pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE, 8,
2721                                  rect->width, rect->height);
2722         gdk_pixbuf_fill (pixbuf, fill_color);
2723
2724         gdk_draw_pixbuf (window, NULL, pixbuf,
2725                          0, 0,
2726                          rect->x - EV_VIEW (widget)->scroll_x, rect->y - EV_VIEW (widget)->scroll_y,
2727                          rect->width, rect->height,
2728                          GDK_RGB_DITHER_NONE,
2729                          0, 0);
2730
2731         g_object_unref (pixbuf);
2732
2733         gc = gdk_gc_new (window);
2734         gdk_gc_set_rgb_fg_color (gc, fill_color_gdk);
2735         gdk_draw_rectangle (window, gc, FALSE,
2736                             rect->x - EV_VIEW (widget)->scroll_x, rect->y - EV_VIEW (widget)->scroll_y,
2737                             rect->width - 1,
2738                             rect->height - 1);
2739         g_object_unref (gc);
2740
2741         gdk_color_free (fill_color_gdk);
2742 }
2743
2744
2745 static void
2746 highlight_find_results (EvView *view, int page)
2747 {
2748         EvDocumentFind *find;
2749         int i, results = 0;
2750
2751         g_return_if_fail (EV_IS_DOCUMENT_FIND (view->document));
2752
2753         find = EV_DOCUMENT_FIND (view->document);
2754
2755         results = ev_document_find_get_n_results (find, page);
2756
2757         for (i = 0; i < results; i++) {
2758                 EvRectangle rectangle;
2759                 GdkRectangle view_rectangle;
2760                 guchar alpha;
2761
2762                 if (i == view->find_result && page == view->current_page) {
2763                         alpha = 0x90;
2764                 } else {
2765                         alpha = 0x20;
2766                 }
2767
2768                 ev_document_find_get_result (find, page, i, &rectangle);
2769                 doc_rect_to_view_rect (view, page, &rectangle, &view_rectangle);
2770                 draw_rubberband (GTK_WIDGET (view), GTK_WIDGET(view)->window,
2771                                  &view_rectangle, alpha);
2772         }
2773 }
2774
2775 static void
2776 draw_loading_text (EvView       *view,
2777                    GdkRectangle *page_area,
2778                    GdkRectangle *expose_area)
2779 {
2780         const char *loading_text;
2781         PangoLayout *layout;
2782         PangoFontDescription *font_desc;
2783         PangoRectangle logical_rect;
2784         double real_scale;
2785         int target_width;
2786
2787         /* Don't annoy users with loading messages during presentations.
2788          * FIXME: Temporary "workaround" for
2789          * http://bugzilla.gnome.org/show_bug.cgi?id=320352 */
2790         if (view->presentation)
2791                 return;
2792
2793         loading_text = _("Loading...");
2794
2795         ev_document_fc_mutex_lock ();
2796
2797         layout = gtk_widget_create_pango_layout (GTK_WIDGET (view), loading_text);
2798
2799         font_desc = pango_font_description_new ();
2800
2801
2802         /* We set the font to be 10 points, get the size, and scale appropriately */
2803         pango_font_description_set_size (font_desc, 10 * PANGO_SCALE);
2804         pango_layout_set_font_description (layout, font_desc);
2805         pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
2806
2807         /* Make sure we fit the middle of the page */
2808         target_width = MAX (page_area->width / 2, 1);
2809         real_scale = ((double)target_width / (double) logical_rect.width) * (PANGO_SCALE * 10);
2810         pango_font_description_set_size (font_desc, (int)real_scale);
2811         pango_layout_set_font_description (layout, font_desc);
2812         pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
2813
2814         gtk_paint_layout (GTK_WIDGET (view)->style,
2815                           GTK_WIDGET (view)->window,
2816                           GTK_WIDGET_STATE (view),
2817                           FALSE,
2818                           page_area,
2819                           GTK_WIDGET (view),
2820                           NULL,
2821                           page_area->x + (target_width/2),
2822                           page_area->y + (page_area->height - logical_rect.height) / 2,
2823                           layout);
2824
2825         pango_font_description_free (font_desc);
2826         g_object_unref (layout);
2827
2828         ev_document_fc_mutex_unlock ();
2829 }
2830
2831 static void
2832 draw_one_page (EvView          *view,
2833                gint             page,
2834                GdkRectangle    *page_area,
2835                GtkBorder       *border,
2836                GdkRectangle    *expose_area,
2837                gboolean        *page_ready)
2838 {
2839         gint width, height;
2840         GdkPixbuf *current_pixbuf;
2841         GdkRectangle overlap;
2842         GdkRectangle real_page_area;
2843         EvViewSelection *selection;
2844         gint current_page;
2845
2846         g_assert (view->document);
2847
2848         if (! gdk_rectangle_intersect (page_area, expose_area, &overlap))
2849                 return;
2850
2851         current_page = ev_page_cache_get_current_page (view->page_cache);
2852         selection = find_selection_for_page (view, page);
2853         ev_page_cache_get_size (view->page_cache,
2854                                 page, view->rotation,
2855                                 view->scale,
2856                                 &width, &height);
2857         /* Render the document itself */
2858         real_page_area = *page_area;
2859
2860         real_page_area.x += border->left;
2861         real_page_area.y += border->top;
2862         real_page_area.width -= (border->left + border->right);
2863         real_page_area.height -= (border->top + border->bottom);
2864         *page_ready = TRUE;
2865
2866         ev_document_misc_paint_one_page (GTK_WIDGET(view)->window,
2867                                          GTK_WIDGET (view),
2868                                          page_area, border,
2869                                          page == current_page);
2870
2871         if (gdk_rectangle_intersect (&real_page_area, expose_area, &overlap)) {
2872                 GdkPixbuf *selection_pixbuf = NULL;
2873                 GdkPixbuf *scaled_image;
2874                 GdkPixbuf *scaled_selection;
2875
2876                 current_pixbuf = ev_pixbuf_cache_get_pixbuf (view->pixbuf_cache, page);
2877
2878                 /* Get the selection pixbuf iff we have something to draw */
2879                 if (current_pixbuf && view->selection_mode == EV_VIEW_SELECTION_TEXT && selection)
2880                         selection_pixbuf = ev_pixbuf_cache_get_selection_pixbuf (view->pixbuf_cache,
2881                                                                                  page,
2882                                                                                  view->scale,
2883                                                                                  NULL);
2884
2885                 if (current_pixbuf == NULL)
2886                         scaled_image = NULL;
2887                 else if (width == gdk_pixbuf_get_width (current_pixbuf) &&
2888                          height == gdk_pixbuf_get_height (current_pixbuf))
2889                         scaled_image = g_object_ref (current_pixbuf);
2890                 else
2891                         /* FIXME: We don't want to scale the whole area, just the right
2892                          * area of it */
2893                         scaled_image = gdk_pixbuf_scale_simple (current_pixbuf,
2894                                                                 width, height,
2895                                                                 GDK_INTERP_NEAREST);
2896
2897                 if (selection_pixbuf == NULL)
2898                         scaled_selection = NULL;
2899                 else if (width == gdk_pixbuf_get_width (selection_pixbuf) &&
2900                          height == gdk_pixbuf_get_height (selection_pixbuf))
2901                         scaled_selection = g_object_ref (selection_pixbuf);
2902                 else
2903                         /* FIXME: We don't want to scale the whole area, just the right
2904                          * area of it */
2905                         scaled_selection = gdk_pixbuf_scale_simple (selection_pixbuf,
2906                                                                     width, height,
2907                                                                     GDK_INTERP_NEAREST);
2908
2909                 if (scaled_image) {
2910                         gdk_draw_pixbuf (GTK_WIDGET(view)->window,
2911                                          GTK_WIDGET (view)->style->fg_gc[GTK_STATE_NORMAL],
2912                                          scaled_image,
2913                                          overlap.x - real_page_area.x,
2914                                          overlap.y - real_page_area.y,
2915                                          overlap.x, overlap.y,
2916                                          overlap.width, overlap.height,
2917                                          GDK_RGB_DITHER_NORMAL,
2918                                          0, 0);
2919                         g_object_unref (scaled_image);
2920                 } else {
2921                         draw_loading_text (view,
2922                                            &real_page_area,
2923                                            expose_area);
2924                         *page_ready = FALSE;
2925                 }
2926
2927                 if (scaled_selection) {
2928                         gdk_draw_pixbuf (GTK_WIDGET(view)->window,
2929                                          GTK_WIDGET (view)->style->fg_gc[GTK_STATE_NORMAL],
2930                                          scaled_selection,
2931                                          overlap.x - real_page_area.x,
2932                                          overlap.y - real_page_area.y,
2933                                          overlap.x, overlap.y,
2934                                          overlap.width, overlap.height,
2935                                          GDK_RGB_DITHER_NORMAL,
2936                                          0, 0);
2937                         g_object_unref (scaled_selection);
2938                 }
2939         }
2940 }
2941
2942 /*** GObject functions ***/
2943
2944 static void
2945 ev_view_finalize (GObject *object)
2946 {
2947         EvView *view = EV_VIEW (object);
2948
2949         g_free (view->status);
2950         g_free (view->find_status);
2951
2952         clear_selection (view);
2953
2954         if (view->image_dnd_info.image)
2955                 g_object_unref (view->image_dnd_info.image);
2956         view->image_dnd_info.image = NULL;
2957
2958         G_OBJECT_CLASS (ev_view_parent_class)->finalize (object);
2959 }
2960
2961 static void
2962 ev_view_destroy (GtkObject *object)
2963 {
2964         EvView *view = EV_VIEW (object);
2965
2966         if (view->document) {
2967                 g_object_unref (view->document);
2968                 view->document = NULL;
2969         }
2970
2971         if (view->pixbuf_cache) {
2972                 g_object_unref (view->pixbuf_cache);
2973                 view->pixbuf_cache = NULL;
2974         }
2975
2976         if (view->link_tooltip) {
2977                 gtk_widget_destroy (view->link_tooltip);
2978                 view->link_tooltip = NULL;
2979         }
2980
2981         if (view->goto_window) {
2982                 gtk_widget_destroy (view->goto_window);
2983                 view->goto_window = NULL;
2984                 view->goto_entry = NULL;
2985         }
2986
2987         if (view->selection_scroll_id) {
2988             g_source_remove (view->selection_scroll_id);
2989             view->selection_scroll_id = 0;
2990         }
2991
2992         if (view->selection_update_id) {
2993             g_source_remove (view->selection_update_id);
2994             view->selection_update_id = 0;
2995         }
2996
2997         ev_view_presentation_transition_stop (view);
2998
2999         ev_view_set_scroll_adjustments (view, NULL, NULL);
3000
3001         GTK_OBJECT_CLASS (ev_view_parent_class)->destroy (object);
3002 }
3003
3004 static void
3005 ev_view_set_property (GObject      *object,
3006                       guint         prop_id,
3007                       const GValue *value,
3008                       GParamSpec   *pspec)
3009 {
3010         EvView *view = EV_VIEW (object);
3011
3012         switch (prop_id) {
3013                 case PROP_CONTINUOUS:
3014                         ev_view_set_continuous (view, g_value_get_boolean (value));
3015                         break;
3016                 case PROP_DUAL_PAGE:
3017                         ev_view_set_dual_page (view, g_value_get_boolean (value));
3018                         break;
3019                 case PROP_FULLSCREEN:
3020                         ev_view_set_fullscreen (view, g_value_get_boolean (value));
3021                         break;
3022                 case PROP_PRESENTATION:
3023                         ev_view_set_presentation (view, g_value_get_boolean (value));
3024                         break;
3025                 case PROP_SIZING_MODE:
3026                         ev_view_set_sizing_mode (view, g_value_get_enum (value));
3027                         break;
3028                 case PROP_ZOOM:
3029                         ev_view_set_zoom (view, g_value_get_double (value), FALSE);
3030                         break;
3031                 case PROP_ROTATION:
3032                         ev_view_set_rotation (view, g_value_get_int (value));
3033                         break;
3034                 default:
3035                         G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
3036         }
3037 }
3038
3039 static AtkObject *
3040 ev_view_get_accessible (GtkWidget *widget)
3041 {
3042         static gboolean first_time = TRUE;
3043
3044         if (first_time) {
3045                 AtkObjectFactory *factory;
3046                 AtkRegistry *registry;
3047                 GType derived_type;
3048                 GType derived_atk_type;
3049
3050                 /*
3051                  * Figure out whether accessibility is enabled by looking at the
3052                  * type of the accessible object which would be created for
3053                  * the parent type of EvView.
3054                  */
3055                 derived_type = g_type_parent (EV_TYPE_VIEW);
3056
3057                 registry = atk_get_default_registry ();
3058                 factory = atk_registry_get_factory (registry,
3059                                                     derived_type);
3060                 derived_atk_type = atk_object_factory_get_accessible_type (factory);
3061                 if (g_type_is_a (derived_atk_type, GTK_TYPE_ACCESSIBLE))
3062                         atk_registry_set_factory_type (registry,
3063                                                        EV_TYPE_VIEW,
3064                                                        ev_view_accessible_factory_get_type ());
3065                 first_time = FALSE;
3066         }
3067         return GTK_WIDGET_CLASS (ev_view_parent_class)->get_accessible (widget);
3068 }
3069
3070 static void
3071 ev_view_get_property (GObject *object,
3072                       guint prop_id,
3073                       GValue *value,
3074                       GParamSpec *pspec)
3075 {
3076         EvView *view = EV_VIEW (object);
3077
3078         switch (prop_id) {
3079                 case PROP_STATUS:
3080                         g_value_set_string (value, view->status);
3081                         break;
3082                 case PROP_FIND_STATUS:
3083                         g_value_set_string (value, view->status);
3084                         break;
3085                 case PROP_CONTINUOUS:
3086                         g_value_set_boolean (value, view->continuous);
3087                         break;
3088                 case PROP_DUAL_PAGE:
3089                         g_value_set_boolean (value, view->dual_page);
3090                         break;
3091                 case PROP_FULLSCREEN:
3092                         g_value_set_boolean (value, view->fullscreen);
3093                         break;
3094                 case PROP_PRESENTATION:
3095                         g_value_set_boolean (value, view->presentation);
3096                         break;
3097                 case PROP_SIZING_MODE:
3098                         g_value_set_enum (value, view->sizing_mode);
3099                         break;
3100                 case PROP_ZOOM:
3101                         g_value_set_double (value, view->scale);
3102                         break;
3103                 case PROP_ROTATION:
3104                         g_value_set_int (value, view->rotation);
3105                         break;
3106                 case PROP_HAS_SELECTION:
3107                         g_value_set_boolean (value,
3108                                              view->selection_info.selections != NULL);
3109                         break;
3110                 default:
3111                         G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
3112         }
3113 }
3114
3115 static void
3116 ev_view_class_init (EvViewClass *class)
3117 {
3118         GObjectClass *object_class = G_OBJECT_CLASS (class);
3119         GtkObjectClass *gtk_object_class = GTK_OBJECT_CLASS (class);
3120         GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
3121         GtkBindingSet *binding_set;
3122
3123         object_class->finalize = ev_view_finalize;
3124         object_class->set_property = ev_view_set_property;
3125         object_class->get_property = ev_view_get_property;
3126
3127         widget_class->expose_event = ev_view_expose_event;
3128         widget_class->button_press_event = ev_view_button_press_event;
3129         widget_class->motion_notify_event = ev_view_motion_notify_event;
3130         widget_class->button_release_event = ev_view_button_release_event;
3131         widget_class->key_press_event = ev_view_key_press_event;
3132         widget_class->focus_in_event = ev_view_focus_in;
3133         widget_class->focus_out_event = ev_view_focus_out;
3134         widget_class->get_accessible = ev_view_get_accessible;
3135         widget_class->size_request = ev_view_size_request;
3136         widget_class->size_allocate = ev_view_size_allocate;
3137         widget_class->realize = ev_view_realize;
3138         widget_class->scroll_event = ev_view_scroll_event;
3139         widget_class->enter_notify_event = ev_view_enter_notify_event;
3140         widget_class->leave_notify_event = ev_view_leave_notify_event;
3141         widget_class->style_set = ev_view_style_set;
3142         widget_class->drag_data_get = ev_view_drag_data_get;
3143         widget_class->drag_motion = ev_view_drag_motion;
3144         widget_class->drag_data_received = ev_view_drag_data_received;
3145         widget_class->popup_menu = ev_view_popup_menu;
3146         gtk_object_class->destroy = ev_view_destroy;
3147
3148         class->set_scroll_adjustments = ev_view_set_scroll_adjustments;
3149         class->binding_activated = ev_view_scroll;
3150
3151         widget_class->set_scroll_adjustments_signal =
3152             g_signal_new ("set-scroll-adjustments",
3153                           G_OBJECT_CLASS_TYPE (object_class),
3154                           G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
3155                           G_STRUCT_OFFSET (EvViewClass, set_scroll_adjustments),
3156                           NULL, NULL,
3157                           ev_marshal_VOID__OBJECT_OBJECT,
3158                           G_TYPE_NONE, 2,
3159                           GTK_TYPE_ADJUSTMENT,
3160                           GTK_TYPE_ADJUSTMENT);
3161
3162         signals[SIGNAL_BINDING_ACTIVATED] = g_signal_new ("binding_activated",
3163                          G_TYPE_FROM_CLASS (object_class),
3164                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
3165                          G_STRUCT_OFFSET (EvViewClass, binding_activated),
3166                          NULL, NULL,
3167                          ev_marshal_VOID__ENUM_BOOLEAN,
3168                          G_TYPE_NONE, 2,
3169                          GTK_TYPE_SCROLL_TYPE,
3170                          G_TYPE_BOOLEAN);
3171
3172         signals[SIGNAL_ZOOM_INVALID] = g_signal_new ("zoom-invalid",
3173                          G_TYPE_FROM_CLASS (object_class),
3174                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
3175                          G_STRUCT_OFFSET (EvViewClass, zoom_invalid),
3176                          NULL, NULL,
3177                          ev_marshal_VOID__VOID,
3178                          G_TYPE_NONE, 0, G_TYPE_NONE);
3179         signals[SIGNAL_EXTERNAL_LINK] = g_signal_new ("external-link",
3180                          G_TYPE_FROM_CLASS (object_class),
3181                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
3182                          G_STRUCT_OFFSET (EvViewClass, external_link),
3183                          NULL, NULL,
3184                          g_cclosure_marshal_VOID__OBJECT,
3185                          G_TYPE_NONE, 1,
3186                          G_TYPE_OBJECT);
3187         signals[SIGNAL_POPUP_MENU] = g_signal_new ("popup",
3188                          G_TYPE_FROM_CLASS (object_class),
3189                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
3190                          G_STRUCT_OFFSET (EvViewClass, popup_menu),
3191                          NULL, NULL,
3192                          g_cclosure_marshal_VOID__OBJECT,
3193                          G_TYPE_NONE, 1,
3194                          G_TYPE_OBJECT);
3195
3196         g_object_class_install_property (object_class,
3197                                          PROP_STATUS,
3198                                          g_param_spec_string ("status",
3199                                                               "Status Message",
3200                                                               "The status message",
3201                                                               NULL,
3202                                                               G_PARAM_READABLE));
3203
3204         g_object_class_install_property (object_class,
3205                                          PROP_FIND_STATUS,
3206                                          g_param_spec_string ("find-status",
3207                                                               "Find Status Message",
3208                                                               "The find status message",
3209                                                               NULL,
3210                                                               G_PARAM_READABLE));
3211
3212         g_object_class_install_property (object_class,
3213                                          PROP_CONTINUOUS,
3214                                          g_param_spec_boolean ("continuous",
3215                                                                "Continuous",
3216                                                                "Continuous scrolling mode",
3217                                                                TRUE,
3218                                                                G_PARAM_READWRITE));
3219
3220         g_object_class_install_property (object_class,
3221                                          PROP_DUAL_PAGE,
3222                                          g_param_spec_boolean ("dual-page",
3223                                                                "Dual Page",
3224                                                                "Two pages visible at once",
3225                                                                FALSE,
3226                                                                G_PARAM_READWRITE));
3227         g_object_class_install_property (object_class,
3228                                          PROP_FULLSCREEN,
3229                                          g_param_spec_boolean ("fullscreen",
3230                                                                "Full Screen",
3231                                                                "Draw page in a fullscreen fashion",
3232                                                                FALSE,
3233                                                                G_PARAM_READWRITE));
3234         g_object_class_install_property (object_class,
3235                                          PROP_PRESENTATION,
3236                                          g_param_spec_boolean ("presentation",
3237                                                                "Presentation",
3238                                                                "Draw page in presentation mode",
3239                                                                TRUE,
3240                                                                G_PARAM_READWRITE));
3241
3242         g_object_class_install_property (object_class,
3243                                          PROP_SIZING_MODE,
3244                                          g_param_spec_enum ("sizing-mode",
3245                                                             "Sizing Mode",
3246                                                             "Sizing Mode",
3247                                                             EV_TYPE_SIZING_MODE,
3248                                                             EV_SIZING_FIT_WIDTH,
3249                                                             G_PARAM_READWRITE));
3250
3251         g_object_class_install_property (object_class,
3252                                          PROP_ZOOM,
3253                                          g_param_spec_double ("zoom",
3254                                                               "Zoom factor",
3255                                                                "Zoom factor",
3256                                                                MIN_SCALE,
3257                                                                MAX_SCALE,
3258                                                                1.0,
3259                                                                G_PARAM_READWRITE));
3260         g_object_class_install_property (object_class,
3261                                          PROP_ROTATION,
3262                                          g_param_spec_double ("rotation",
3263                                                               "Rotation",
3264                                                                "Rotation",
3265                                                                0,
3266                                                                360,
3267                                                                0,
3268                                                                G_PARAM_READWRITE));
3269         g_object_class_install_property (object_class,
3270                                          PROP_HAS_SELECTION,
3271                                          g_param_spec_boolean ("has-selection",
3272                                                                "Has selection",
3273                                                                "The view has selections",
3274                                                                FALSE,
3275                                                                G_PARAM_READABLE));
3276
3277         binding_set = gtk_binding_set_by_class (class);
3278
3279         add_scroll_binding_keypad (binding_set, GDK_Left,  0, EV_SCROLL_STEP_BACKWARD, TRUE);
3280         add_scroll_binding_keypad (binding_set, GDK_Right, 0, EV_SCROLL_STEP_FORWARD,  TRUE);
3281         add_scroll_binding_keypad (binding_set, GDK_Left,  GDK_MOD1_MASK, EV_SCROLL_STEP_DOWN, TRUE);
3282         add_scroll_binding_keypad (binding_set, GDK_Right, GDK_MOD1_MASK, EV_SCROLL_STEP_UP,  TRUE);
3283         add_scroll_binding_keypad (binding_set, GDK_Up,    0, EV_SCROLL_STEP_BACKWARD, FALSE);
3284         add_scroll_binding_keypad (binding_set, GDK_Down,  0, EV_SCROLL_STEP_FORWARD,  FALSE);
3285         add_scroll_binding_keypad (binding_set, GDK_Up,    GDK_MOD1_MASK, EV_SCROLL_STEP_DOWN, FALSE);
3286         add_scroll_binding_keypad (binding_set, GDK_Down,  GDK_MOD1_MASK, EV_SCROLL_STEP_UP,  FALSE);
3287 }
3288
3289 static void
3290 ev_view_init (EvView *view)
3291 {
3292         GTK_WIDGET_SET_FLAGS (view, GTK_CAN_FOCUS);
3293
3294         view->spacing = 5;
3295         view->scale = 1.0;
3296         view->current_page = 0;
3297         view->pressed_button = -1;
3298         view->cursor = EV_VIEW_CURSOR_NORMAL;
3299         view->drag_info.in_drag = FALSE;
3300         view->selection_info.selections = NULL;
3301         view->selection_info.in_selection = FALSE;
3302         view->selection_info.in_drag = FALSE;
3303         view->selection_mode = EV_VIEW_SELECTION_TEXT;
3304         view->continuous = TRUE;
3305         view->dual_page = FALSE;
3306         view->presentation = FALSE;
3307         view->presentation_state = EV_PRESENTATION_NORMAL;
3308         view->fullscreen = FALSE;
3309         view->sizing_mode = EV_SIZING_FIT_WIDTH;
3310         view->pending_scroll = SCROLL_TO_KEEP_POSITION;
3311         view->jump_to_find_result = TRUE;
3312
3313         gtk_drag_dest_set (GTK_WIDGET (view),
3314                            GTK_DEST_DEFAULT_ALL,
3315                            view_drop_targets,
3316                            G_N_ELEMENTS (view_drop_targets),
3317                            GDK_ACTION_COPY);
3318 }
3319
3320 /*** Callbacks ***/
3321
3322 static void
3323 find_changed_cb (EvDocument *document, int page, EvView *view)
3324 {
3325         double percent;
3326         int n_pages;
3327
3328         percent = ev_document_find_get_progress
3329                         (EV_DOCUMENT_FIND (view->document));
3330         n_pages = ev_page_cache_get_n_pages (view->page_cache);
3331
3332         if (view->jump_to_find_result == TRUE) {
3333                 jump_to_find_page (view, EV_VIEW_FIND_NEXT, 0);
3334                 jump_to_find_result (view);
3335         }
3336         update_find_status_message (view, percent * n_pages >= n_pages - 1 );
3337         if (view->current_page == page)
3338                 gtk_widget_queue_draw (GTK_WIDGET (view));
3339 }
3340
3341 static void
3342 job_finished_cb (EvPixbufCache *pixbuf_cache,
3343                  EvView        *view)
3344 {
3345         gtk_widget_queue_draw (GTK_WIDGET (view));
3346 }
3347
3348 static void
3349 page_changed_cb (EvPageCache *page_cache,
3350                  int          new_page,
3351                  EvView      *view)
3352 {
3353         if (view->current_page != new_page) {
3354                 view->current_page = new_page;
3355                 view->pending_scroll = SCROLL_TO_PAGE_POSITION;
3356                 if (view->presentation)
3357                         ev_view_presentation_transition_start (view);
3358                 gtk_widget_queue_resize (GTK_WIDGET (view));
3359         } else {
3360                 gtk_widget_queue_draw (GTK_WIDGET (view));
3361         }
3362
3363         if (EV_IS_DOCUMENT_FIND (view->document)) {
3364                 view->find_result = 0;
3365                 update_find_status_message (view, TRUE);
3366         }
3367 }
3368
3369 static void on_adjustment_value_changed (GtkAdjustment  *adjustment,
3370                                          EvView *view)
3371 {
3372         int dx = 0, dy = 0;
3373
3374         if (! GTK_WIDGET_REALIZED (view))
3375                 return;
3376
3377         if (view->hadjustment) {
3378                 dx = view->scroll_x - (int) view->hadjustment->value;
3379                 view->scroll_x = (int) view->hadjustment->value;
3380         } else {
3381                 view->scroll_x = 0;
3382         }
3383
3384         if (view->vadjustment) {
3385                 dy = view->scroll_y - (int) view->vadjustment->value;
3386                 view->scroll_y = (int) view->vadjustment->value;
3387         } else {
3388                 view->scroll_y = 0;
3389         }
3390
3391
3392         if (view->pending_resize)
3393                 gtk_widget_queue_draw (GTK_WIDGET (view));
3394         else
3395                 gdk_window_scroll (GTK_WIDGET (view)->window, dx, dy);
3396
3397
3398         if (view->document)
3399                 view_update_range_and_current_page (view);
3400 }
3401
3402 GtkWidget*
3403 ev_view_new (void)
3404 {
3405         GtkWidget *view;
3406
3407         view = g_object_new (EV_TYPE_VIEW, NULL);
3408
3409         return view;
3410 }
3411
3412 static void
3413 setup_caches (EvView *view)
3414 {
3415         view->page_cache = ev_page_cache_get (view->document);
3416         g_signal_connect (view->page_cache, "page-changed", G_CALLBACK (page_changed_cb), view);
3417         view->pixbuf_cache = ev_pixbuf_cache_new (GTK_WIDGET (view), view->document);
3418         g_signal_connect (view->pixbuf_cache, "job-finished", G_CALLBACK (job_finished_cb), view);
3419 }
3420
3421 static void
3422 clear_caches (EvView *view)
3423 {
3424         if (view->pixbuf_cache) {
3425                 g_object_unref (view->pixbuf_cache);
3426                 view->pixbuf_cache = NULL;
3427         }
3428
3429         if (view->page_cache) {
3430                 view->page_cache = NULL;
3431         }
3432 }
3433
3434 void
3435 ev_view_set_loading (EvView       *view,
3436                      gboolean      loading)
3437 {
3438         view->loading = loading;
3439         gtk_widget_queue_draw (GTK_WIDGET (view));
3440 }
3441
3442 void
3443 ev_view_set_document (EvView     *view,
3444                       EvDocument *document)
3445 {
3446         g_return_if_fail (EV_IS_VIEW (view));
3447
3448         view->loading = FALSE;
3449
3450         if (document != view->document) {
3451                 clear_caches (view);
3452
3453                 if (view->document) {
3454                         g_signal_handlers_disconnect_by_func (view->document,
3455                                                               find_changed_cb,
3456                                                               view);
3457                         g_object_unref (view->document);
3458                         view->page_cache = NULL;
3459
3460                 }
3461
3462                 view->document = document;
3463                 view->find_result = 0;
3464
3465                 if (view->document) {
3466                         g_object_ref (view->document);
3467                         if (EV_IS_DOCUMENT_FIND (view->document)) {
3468                                 g_signal_connect (view->document,
3469                                                   "find_changed",
3470                                                   G_CALLBACK (find_changed_cb),
3471                                                   view);
3472                         }
3473
3474                         setup_caches (view);
3475                 }
3476
3477                 gtk_widget_queue_resize (GTK_WIDGET (view));
3478         }
3479 }
3480
3481 /*** Zoom and sizing mode ***/
3482
3483 #define EPSILON 0.0000001
3484 void
3485 ev_view_set_zoom (EvView   *view,
3486                   double    factor,
3487                   gboolean  relative)
3488 {
3489         double scale;
3490
3491         if (relative)
3492                 scale = view->scale * factor;
3493         else
3494                 scale = factor;
3495
3496         scale = CLAMP (scale, MIN_SCALE, MAX_SCALE);
3497
3498         if (ABS (view->scale - scale) < EPSILON)
3499                 return;
3500
3501         view->scale = scale;
3502         view->pending_resize = TRUE;
3503
3504         gtk_widget_queue_resize (GTK_WIDGET (view));
3505
3506         g_object_notify (G_OBJECT (view), "zoom");
3507 }
3508
3509 double
3510 ev_view_get_zoom (EvView *view)
3511 {
3512         return view->scale;
3513 }
3514
3515 gboolean
3516 ev_view_get_continuous (EvView *view)
3517 {
3518         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
3519
3520         return view->continuous;
3521 }
3522
3523 void
3524 ev_view_set_continuous (EvView   *view,
3525                         gboolean  continuous)
3526 {
3527         g_return_if_fail (EV_IS_VIEW (view));
3528
3529         continuous = continuous != FALSE;
3530
3531         if (view->continuous != continuous) {
3532                 view->continuous = continuous;
3533                 view->pending_scroll = SCROLL_TO_PAGE_POSITION;
3534                 gtk_widget_queue_resize (GTK_WIDGET (view));
3535         }
3536
3537         g_object_notify (G_OBJECT (view), "continuous");
3538 }
3539
3540 gboolean
3541 ev_view_get_dual_page (EvView *view)
3542 {
3543         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
3544
3545         return view->dual_page;
3546 }
3547
3548 void
3549 ev_view_set_dual_page (EvView   *view,
3550                        gboolean  dual_page)
3551 {
3552         g_return_if_fail (EV_IS_VIEW (view));
3553
3554         dual_page = dual_page != FALSE;
3555
3556         if (view->dual_page == dual_page)
3557                 return;
3558
3559         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
3560         view->dual_page = dual_page;
3561         /* FIXME: if we're keeping the pixbuf cache around, we should extend the
3562          * preload_cache_size to be 2 if dual_page is set.
3563          */
3564         gtk_widget_queue_resize (GTK_WIDGET (view));
3565
3566         g_object_notify (G_OBJECT (view), "dual-page");
3567 }
3568
3569 void
3570 ev_view_set_fullscreen (EvView   *view,
3571                          gboolean  fullscreen)
3572 {
3573         g_return_if_fail (EV_IS_VIEW (view));
3574
3575         fullscreen = fullscreen != FALSE;
3576
3577         if (view->fullscreen == fullscreen)
3578                 return;
3579
3580         view->fullscreen = fullscreen;
3581         gtk_widget_queue_resize (GTK_WIDGET (view));
3582
3583         g_object_notify (G_OBJECT (view), "fullscreen");
3584 }
3585
3586 gboolean
3587 ev_view_get_fullscreen (EvView *view)
3588 {
3589         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
3590
3591         return view->fullscreen;
3592 }
3593
3594 void
3595 ev_view_set_presentation (EvView   *view,
3596                           gboolean  presentation)
3597 {
3598         g_return_if_fail (EV_IS_VIEW (view));
3599
3600         presentation = presentation != FALSE;
3601
3602         if (view->presentation == presentation)
3603                 return;
3604
3605         if (!presentation)
3606                 view->presentation_state = EV_PRESENTATION_NORMAL;
3607
3608         view->presentation = presentation;
3609         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
3610
3611         if (presentation) {
3612                 view->sizing_mode_saved = view->sizing_mode;
3613                 view->scale_saved = view->scale;
3614                 ev_view_set_sizing_mode (view, EV_SIZING_BEST_FIT);
3615         } else {
3616                 ev_view_set_sizing_mode (view, view->sizing_mode_saved);
3617                 ev_view_set_zoom (view, view->scale_saved, FALSE);
3618         }
3619
3620         gtk_widget_queue_resize (GTK_WIDGET (view));
3621
3622         if (presentation)
3623                 ev_view_presentation_transition_start (view);
3624         else
3625                 ev_view_presentation_transition_stop (view);
3626
3627         if (GTK_WIDGET_REALIZED (view)) {
3628                 if (view->presentation)
3629                         gdk_window_set_background (GTK_WIDGET(view)->window,
3630                                                    &GTK_WIDGET (view)->style->black);
3631                 else
3632                         gdk_window_set_background (GTK_WIDGET(view)->window,
3633                                                    &GTK_WIDGET (view)->style->mid [GTK_STATE_NORMAL]);
3634         }
3635
3636         g_object_notify (G_OBJECT (view), "presentation");
3637 }
3638
3639 gboolean
3640 ev_view_get_presentation (EvView *view)
3641 {
3642         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
3643
3644         return view->presentation;
3645 }
3646
3647 static gboolean
3648 transition_next_page (EvView *view)
3649 {
3650         ev_view_next_page (view);
3651
3652         return FALSE;
3653 }
3654
3655 static void
3656 ev_view_presentation_transition_stop (EvView *view)
3657 {
3658         if (view->trans_timeout_id > 0)
3659                 g_source_remove (view->trans_timeout_id);
3660         view->trans_timeout_id = 0;
3661 }
3662
3663 static void
3664 ev_view_presentation_transition_start (EvView *view)
3665 {
3666         gdouble duration;
3667
3668         if (!EV_IS_DOCUMENT_TRANSITION (view->document))
3669                 return;
3670
3671         ev_view_presentation_transition_stop (view);
3672
3673         duration = ev_document_transition_get_page_duration (EV_DOCUMENT_TRANSITION (view->document),
3674                                                              view->current_page);
3675         if (duration > 0)
3676                 view->trans_timeout_id = g_timeout_add (duration * 1000,
3677                                                         (GSourceFunc) transition_next_page,
3678                                                         view);
3679 }
3680
3681 void
3682 ev_view_set_sizing_mode (EvView       *view,
3683                          EvSizingMode  sizing_mode)
3684 {
3685         g_return_if_fail (EV_IS_VIEW (view));
3686
3687         if (view->sizing_mode == sizing_mode)
3688                 return;
3689
3690         view->sizing_mode = sizing_mode;
3691         gtk_widget_queue_resize (GTK_WIDGET (view));
3692
3693         g_object_notify (G_OBJECT (view), "sizing-mode");
3694 }
3695
3696 EvSizingMode
3697 ev_view_get_sizing_mode (EvView *view)
3698 {
3699         g_return_val_if_fail (EV_IS_VIEW (view), EV_SIZING_FREE);
3700
3701         return view->sizing_mode;
3702 }
3703
3704 gboolean
3705 ev_view_can_zoom_in (EvView *view)
3706 {
3707         return view->scale * ZOOM_IN_FACTOR <= MAX_SCALE;
3708 }
3709
3710 gboolean
3711 ev_view_can_zoom_out (EvView *view)
3712 {
3713         return view->scale * ZOOM_OUT_FACTOR >= MIN_SCALE;
3714 }
3715
3716 void
3717 ev_view_zoom_in (EvView *view)
3718 {
3719         g_return_if_fail (view->sizing_mode == EV_SIZING_FREE);
3720
3721         view->pending_scroll = SCROLL_TO_CENTER;
3722         ev_view_set_zoom (view, ZOOM_IN_FACTOR, TRUE);
3723 }
3724
3725 void
3726 ev_view_zoom_out (EvView *view)
3727 {
3728         g_return_if_fail (view->sizing_mode == EV_SIZING_FREE);
3729
3730         view->pending_scroll = SCROLL_TO_CENTER;
3731         ev_view_set_zoom (view, ZOOM_OUT_FACTOR, TRUE);
3732 }
3733
3734 void
3735 ev_view_rotate_right (EvView *view)
3736 {
3737         int rotation = view->rotation + 90;
3738
3739         if (rotation >= 360) {
3740                 rotation -= 360;
3741         }
3742
3743         ev_view_set_rotation (view, rotation);
3744 }
3745
3746 void
3747 ev_view_rotate_left (EvView *view)
3748 {
3749         int rotation = view->rotation - 90;
3750
3751         if (rotation < 0) {
3752                 rotation += 360;
3753         }
3754
3755         ev_view_set_rotation (view, rotation);
3756 }
3757
3758 void
3759 ev_view_set_rotation (EvView *view, int rotation)
3760 {
3761         view->rotation = rotation;
3762
3763         if (view->pixbuf_cache) {
3764                 ev_pixbuf_cache_clear (view->pixbuf_cache);
3765                 gtk_widget_queue_resize (GTK_WIDGET (view));
3766         }
3767
3768         if (rotation != 0)
3769                 clear_selection (view);
3770
3771         g_object_notify (G_OBJECT (view), "rotation");
3772 }
3773
3774 int
3775 ev_view_get_rotation (EvView *view)
3776 {
3777         return view->rotation;
3778 }
3779
3780 static double
3781 zoom_for_size_fit_width (int doc_width,
3782                          int doc_height,
3783                          int target_width,
3784                          int target_height,
3785                          int vsb_width)
3786 {
3787         double scale;
3788
3789         scale = (double)target_width / doc_width;
3790
3791         if (doc_height * scale > target_height)
3792                 scale = (double) (target_width - vsb_width) / doc_width;
3793
3794         return scale;
3795 }
3796
3797 static double
3798 zoom_for_size_fit_height (int doc_width,
3799                           int doc_height,
3800                           int target_width,
3801                           int target_height,
3802                           int vsb_height)
3803 {
3804         double scale;
3805
3806         scale = (double)target_height / doc_height;
3807
3808         if (doc_width * scale > target_width)
3809                 scale = (double) (target_height - vsb_height) / doc_height;
3810
3811         return scale;
3812 }
3813
3814 static double
3815 zoom_for_size_best_fit (int doc_width,
3816                         int doc_height,
3817                         int target_width,
3818                         int target_height,
3819                         int vsb_width,
3820                         int hsb_width)
3821 {
3822         double w_scale;
3823         double h_scale;
3824
3825         w_scale = (double)target_width / doc_width;
3826         h_scale = (double)target_height / doc_height;
3827
3828         if (doc_height * w_scale > target_height)
3829                 w_scale = (double) (target_width - vsb_width) / doc_width;
3830         if (doc_width * h_scale > target_width)
3831                 h_scale = (double) (target_height - hsb_width) / doc_height;
3832
3833         return MIN (w_scale, h_scale);
3834 }
3835
3836
3837 static void
3838 ev_view_zoom_for_size_presentation (EvView *view,
3839                                     int     width,
3840                                     int     height)
3841 {
3842         int doc_width, doc_height;
3843         gdouble scale;
3844
3845         ev_page_cache_get_size (view->page_cache,
3846                                 view->current_page,
3847                                 view->rotation,
3848                                 1.0,
3849                                 &doc_width,
3850                                 &doc_height);
3851         scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, 0, 0);
3852         ev_view_set_zoom (view, scale, FALSE);
3853 }
3854
3855 static void
3856 ev_view_zoom_for_size_continuous_and_dual_page (EvView *view,
3857                            int     width,
3858                            int     height,
3859                            int     vsb_width,
3860                            int     hsb_height)
3861 {
3862         int doc_width, doc_height;
3863         GtkBorder border;
3864         gdouble scale;
3865
3866         ev_page_cache_get_max_width (view->page_cache,
3867                                      view->rotation,
3868                                      1.0,
3869                                      &doc_width);
3870         ev_page_cache_get_max_height (view->page_cache,
3871                                       view->rotation,
3872                                       1.0,
3873                                       &doc_height);
3874         compute_border (view, doc_width, doc_height, &border);
3875
3876         doc_width = doc_width * 2;
3877         width -= (2 * (border.left + border.right) + 3 * view->spacing);
3878         height -= (border.top + border.bottom + 2 * view->spacing - 1);
3879
3880         /* FIXME: We really need to calculate the overall height here, not the
3881          * page height.  We assume there's always a vertical scrollbar for
3882          * now.  We need to fix this. */
3883         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
3884                 scale = zoom_for_size_fit_width (doc_width, doc_height, width - vsb_width, height, 0);
3885         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
3886                 scale = zoom_for_size_best_fit (doc_width, doc_height, width - vsb_width, height, 0, hsb_height);
3887         else
3888                 g_assert_not_reached ();
3889
3890         ev_view_set_zoom (view, scale, FALSE);
3891 }
3892
3893 static void
3894 ev_view_zoom_for_size_continuous (EvView *view,
3895                                   int     width,
3896                                   int     height,
3897                                   int     vsb_width,
3898                                   int     hsb_height)
3899 {
3900         int doc_width, doc_height;
3901         GtkBorder border;
3902         gdouble scale;
3903
3904         ev_page_cache_get_max_width (view->page_cache,
3905                                      view->rotation,
3906                                      1.0,
3907                                      &doc_width);
3908         ev_page_cache_get_max_height (view->page_cache,
3909                                       view->rotation,
3910                                       1.0,
3911                                       &doc_height);
3912         compute_border (view, doc_width, doc_height, &border);
3913
3914         width -= (border.left + border.right + 2 * view->spacing);
3915         height -= (border.top + border.bottom + 2 * view->spacing - 1);
3916
3917         /* FIXME: We really need to calculate the overall height here, not the
3918          * page height.  We assume there's always a vertical scrollbar for
3919          * now.  We need to fix this. */
3920         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
3921                 scale = zoom_for_size_fit_width (doc_width, doc_height, width - vsb_width, height, 0);
3922         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
3923                 scale = zoom_for_size_best_fit (doc_width, doc_height, width - vsb_width, height, 0, hsb_height);
3924         else
3925                 g_assert_not_reached ();
3926
3927         ev_view_set_zoom (view, scale, FALSE);
3928 }
3929
3930 static void
3931 ev_view_zoom_for_size_dual_page (EvView *view,
3932                                  int     width,
3933                                  int     height,
3934                                  int     vsb_width,
3935                                  int     hsb_height)
3936 {
3937         GtkBorder border;
3938         gint doc_width, doc_height;
3939         gdouble scale;
3940         gint other_page;
3941
3942         other_page = view->current_page ^ 1;
3943
3944         /* Find the largest of the two. */
3945         ev_page_cache_get_size (view->page_cache,
3946                                 view->current_page,
3947                                 view->rotation,
3948                                 1.0,
3949                                 &doc_width, &doc_height);
3950
3951         if (other_page < ev_page_cache_get_n_pages (view->page_cache)) {
3952                 gint width_2, height_2;
3953                 ev_page_cache_get_size (view->page_cache,
3954                                         other_page,
3955                                         view->rotation,
3956                                         1.0,
3957                                         &width_2, &height_2);
3958                 if (width_2 > doc_width)
3959                         doc_width = width_2;
3960                 if (height_2 > doc_height)
3961                         doc_height = height_2;
3962         }
3963         compute_border (view, doc_width, doc_height, &border);
3964
3965         doc_width = doc_width * 2;
3966         width -= ((border.left + border.right)* 2 + 3 * view->spacing);
3967         height -= (border.top + border.bottom + 2 * view->spacing);
3968
3969         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
3970                 scale = zoom_for_size_fit_width (doc_width, doc_height, width, height, vsb_width);
3971         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
3972                 scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, vsb_width, hsb_height);
3973         else
3974                 g_assert_not_reached ();
3975
3976         ev_view_set_zoom (view, scale, FALSE);
3977 }
3978
3979 static void
3980 ev_view_zoom_for_size_single_page (EvView *view,
3981                                    int     width,
3982                                    int     height,
3983                                    int     vsb_width,
3984                                    int     hsb_height)
3985 {
3986         int doc_width, doc_height;
3987         GtkBorder border;
3988         gdouble scale;
3989
3990         ev_page_cache_get_size (view->page_cache,
3991                                 view->current_page,
3992                                 view->rotation,
3993                                 1.0,
3994                                 &doc_width,
3995                                 &doc_height);
3996         /* Get an approximate border */
3997         compute_border (view, width, height, &border);
3998
3999         width -= (border.left + border.right + 2 * view->spacing);
4000         height -= (border.top + border.bottom + 2 * view->spacing);
4001
4002         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
4003                 scale = zoom_for_size_fit_width (doc_width, doc_height, width, height, vsb_width);
4004         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
4005                 scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, vsb_width, hsb_height);
4006         else
4007                 g_assert_not_reached ();
4008
4009         ev_view_set_zoom (view, scale, FALSE);
4010 }
4011
4012 void
4013 ev_view_set_zoom_for_size (EvView *view,
4014                            int     width,
4015                            int     height,
4016                            int     vsb_width,
4017                            int     hsb_height)
4018 {
4019         g_return_if_fail (view->sizing_mode == EV_SIZING_FIT_WIDTH ||
4020                           view->sizing_mode == EV_SIZING_BEST_FIT);
4021         g_return_if_fail (width >= 0);
4022         g_return_if_fail (height >= 0);
4023
4024         if (view->document == NULL)
4025                 return;
4026
4027         if (view->presentation)
4028                 ev_view_zoom_for_size_presentation (view, width, height);
4029         else if (view->continuous && view->dual_page)
4030                 ev_view_zoom_for_size_continuous_and_dual_page (view, width, height, vsb_width, hsb_height);
4031         else if (view->continuous)
4032                 ev_view_zoom_for_size_continuous (view, width, height, vsb_width, hsb_height);
4033         else if (view->dual_page)
4034                 ev_view_zoom_for_size_dual_page (view, width, height, vsb_width, hsb_height);
4035         else
4036                 ev_view_zoom_for_size_single_page (view, width, height, vsb_width, hsb_height);
4037 }
4038
4039 /*** Status text messages ***/
4040
4041 const char *
4042 ev_view_get_status (EvView *view)
4043 {
4044         g_return_val_if_fail (EV_IS_VIEW (view), NULL);
4045
4046         return view->status;
4047 }
4048
4049 static void
4050 ev_view_set_status (EvView *view, const char *message)
4051 {
4052         g_return_if_fail (EV_IS_VIEW (view));
4053
4054         if (message != view->status) {
4055                 g_free (view->status);
4056                 view->status = g_strdup (message);
4057                 g_object_notify (G_OBJECT (view), "status");
4058         }
4059 }
4060
4061 static void
4062 update_find_status_message (EvView *view, gboolean this_page)
4063 {
4064         char *message;
4065
4066         if (this_page) {
4067                 int results;
4068
4069                 results = ev_document_find_get_n_results
4070                                 (EV_DOCUMENT_FIND (view->document),
4071                                  view->current_page);
4072                 /* TRANS: Sometimes this could be better translated as
4073                    "%d hit(s) on this page".  Therefore this string
4074                    contains plural cases. */
4075                 message = g_strdup_printf (ngettext ("%d found on this page",
4076                                                      "%d found on this page",
4077                                                      results),
4078                                            results);
4079         } else {
4080                 double percent;
4081
4082                 percent = ev_document_find_get_progress
4083                                 (EV_DOCUMENT_FIND (view->document));
4084                 message = g_strdup_printf (_("%3d%% remaining to search"),
4085                                            (int) ((1.0 - percent) * 100));
4086
4087         }
4088         ev_view_set_find_status (view, message);
4089         g_free (message);
4090 }
4091
4092 const char *
4093 ev_view_get_find_status (EvView *view)
4094 {
4095         g_return_val_if_fail (EV_IS_VIEW (view), NULL);
4096
4097         return view->find_status;
4098 }
4099
4100 static void
4101 ev_view_set_find_status (EvView *view, const char *message)
4102 {
4103         g_return_if_fail (EV_IS_VIEW (view));
4104
4105         g_free (view->find_status);
4106         view->find_status = g_strdup (message);
4107         g_object_notify (G_OBJECT (view), "find-status");
4108 }
4109
4110 /*** Find ***/
4111
4112 static void
4113 jump_to_find_result (EvView *view)
4114 {
4115         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
4116         EvRectangle rect;
4117         GdkRectangle view_rect;
4118         int n_results;
4119         int page = view->current_page;
4120
4121         n_results = ev_document_find_get_n_results (find, page);
4122
4123         if (n_results > 0  && view->find_result < n_results) {
4124                 ev_document_find_get_result
4125                         (find, page, view->find_result, &rect);
4126
4127                 doc_rect_to_view_rect (view, page, &rect, &view_rect);
4128                 ensure_rectangle_is_visible (view, &view_rect);
4129         }
4130 }
4131
4132 /**
4133  * jump_to_find_page
4134  * @view: #EvView instance
4135  * @direction: Direction to look
4136  * @shift: Shift from current page
4137  *
4138  * Jumps to the first page that has occurences of searched word.
4139  * Uses a direction where to look and a shift from current page.
4140  *
4141  */
4142 static void
4143 jump_to_find_page (EvView *view, EvViewFindDirection direction, gint shift)
4144 {
4145         int n_pages, i;
4146
4147         n_pages = ev_page_cache_get_n_pages (view->page_cache);
4148
4149         for (i = 0; i < n_pages; i++) {
4150                 int has_results;
4151                 int page;
4152
4153                 if (direction == EV_VIEW_FIND_NEXT)
4154                         page = view->current_page + i;
4155                 else
4156                         page = view->current_page - i;
4157                 page += shift;
4158
4159                 if (page >= n_pages) {
4160                         page = page - n_pages;
4161                 }
4162                 if (page < 0)
4163                         page = page + n_pages;
4164
4165                 has_results = ev_document_find_page_has_results
4166                                 (EV_DOCUMENT_FIND (view->document), page);
4167                 if (has_results == -1) {
4168                         break;
4169                 } else if (has_results == 1) {
4170                         ev_page_cache_set_current_page (view->page_cache, page);
4171                         break;
4172                 }
4173         }
4174 }
4175
4176 gboolean
4177 ev_view_can_find_next (EvView *view)
4178 {
4179         if (EV_IS_DOCUMENT_FIND (view->document)) {
4180                 EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
4181                 int i, n_pages;
4182
4183                 n_pages = ev_page_cache_get_n_pages (view->page_cache);
4184                 for (i = 0; i < n_pages; i++) {
4185                         if (ev_document_find_get_n_results (find, i) > 0) {
4186                                 return TRUE;
4187                         }
4188                 }
4189         }
4190
4191         return FALSE;
4192 }
4193
4194 void
4195 ev_view_find_next (EvView *view)
4196 {
4197         int n_results, n_pages;
4198         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
4199
4200         n_results = ev_document_find_get_n_results (find, view->current_page);
4201
4202         n_pages = ev_page_cache_get_n_pages (view->page_cache);
4203
4204         view->find_result++;
4205
4206         if (view->find_result >= n_results) {
4207
4208                 view->find_result = 0;
4209                 jump_to_find_page (view, EV_VIEW_FIND_NEXT, 1);
4210                 jump_to_find_result (view);
4211         } else {
4212                 jump_to_find_result (view);
4213                 gtk_widget_queue_draw (GTK_WIDGET (view));
4214         }
4215 }
4216
4217 gboolean
4218 ev_view_can_find_previous (EvView *view)
4219 {
4220         if (EV_IS_DOCUMENT_FIND (view->document)) {
4221                 EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
4222                 int i, n_pages;
4223
4224                 n_pages = ev_page_cache_get_n_pages (view->page_cache);
4225                 for (i = n_pages - 1; i >= 0; i--) {
4226                         if (ev_document_find_get_n_results (find, i) > 0) {
4227                                 return TRUE;
4228                         }
4229                 }
4230         }
4231
4232         return FALSE;
4233 }
4234 void
4235 ev_view_find_previous (EvView *view)
4236 {
4237         int n_results, n_pages;
4238         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
4239         EvPageCache *page_cache;
4240
4241         page_cache = ev_page_cache_get (view->document);
4242
4243         n_results = ev_document_find_get_n_results (find, view->current_page);
4244
4245         n_pages = ev_page_cache_get_n_pages (page_cache);
4246
4247         view->find_result--;
4248
4249         if (view->find_result < 0) {
4250
4251                 jump_to_find_page (view, EV_VIEW_FIND_PREV, -1);
4252                 view->find_result = ev_document_find_get_n_results (find, view->current_page) - 1;
4253                 jump_to_find_result (view);
4254         } else {
4255                 jump_to_find_result (view);
4256                 gtk_widget_queue_draw (GTK_WIDGET (view));
4257         }
4258 }
4259
4260 void ev_view_search_changed (EvView *view)
4261 {
4262         /* search string has changed, focus on new search result */
4263         view->jump_to_find_result = TRUE;
4264 }
4265
4266 /*** Selections ***/
4267
4268 /* compute_new_selection_rect/text calculates the area currently selected by
4269  * view_rect.  each handles a different mode;
4270  */
4271 static GList *
4272 compute_new_selection_rect (EvView       *view,
4273                             GdkPoint     *start,
4274                             GdkPoint     *stop)
4275 {
4276         GdkRectangle view_rect;
4277         int n_pages, i;
4278         GList *list = NULL;
4279
4280         g_assert (view->selection_mode == EV_VIEW_SELECTION_RECTANGLE);
4281
4282         view_rect.x = MIN (start->x, stop->x);
4283         view_rect.y = MIN (start->y, stop->y);
4284         view_rect.width = MAX (start->x, stop->x) - view_rect.x;
4285         view_rect.width = MAX (start->y, stop->y) - view_rect.y;
4286
4287         n_pages = ev_page_cache_get_n_pages (view->page_cache);
4288
4289         for (i = 0; i < n_pages; i++) {
4290                 GdkRectangle page_area;
4291                 GtkBorder border;
4292
4293                 if (get_page_extents (view, i, &page_area, &border)) {
4294                         GdkRectangle overlap;
4295
4296                         if (gdk_rectangle_intersect (&page_area, &view_rect, &overlap)) {
4297                                 EvViewSelection *selection;
4298
4299                                 selection = g_new0 (EvViewSelection, 1);
4300                                 selection->page = i;
4301                                 view_rect_to_doc_rect (view, &overlap, &page_area,
4302                                                        &(selection->rect));
4303
4304                                 list = g_list_append (list, selection);
4305                         }
4306                 }
4307         }
4308
4309         return list;
4310 }
4311
4312 static gboolean
4313 gdk_rectangle_point_in (GdkRectangle *rectangle,
4314                         GdkPoint     *point)
4315 {
4316         return rectangle->x <= point->x &&
4317                 rectangle->y <= point->y &&
4318                 point->x < rectangle->x + rectangle->width &&
4319                 point->y < rectangle->y + rectangle->height;
4320 }
4321
4322 static GList *
4323 compute_new_selection_text (EvView   *view,
4324                             GdkPoint *start,
4325                             GdkPoint *stop)
4326 {
4327         int n_pages, i, first, last;
4328         GList *list = NULL;
4329         EvViewSelection *selection;
4330         gint width, height;
4331         int start_page, end_page;
4332
4333         g_assert (view->selection_mode == EV_VIEW_SELECTION_TEXT);
4334
4335         n_pages = ev_page_cache_get_n_pages (view->page_cache);
4336
4337         /* First figure out the range of pages the selection
4338          * affects. */
4339         first = n_pages;
4340         last = 0;
4341         if (view->continuous) {
4342                 start_page = 0;
4343                 end_page = n_pages;
4344         } else if (view->dual_page) {
4345                 start_page = view->start_page;
4346                 end_page = view->end_page + 1;
4347         } else {
4348                 start_page = view->current_page;
4349                 end_page = view->current_page + 1;
4350         }
4351
4352         for (i = start_page; i < end_page; i++) {
4353                 GdkRectangle page_area;
4354                 GtkBorder border;
4355
4356                 get_page_extents (view, i, &page_area, &border);
4357                 if (gdk_rectangle_point_in (&page_area, start) ||
4358                     gdk_rectangle_point_in (&page_area, stop)) {
4359                         if (first == n_pages)
4360                                 first = i;
4361                         last = i;
4362                 }
4363
4364         }
4365
4366
4367
4368         /* Now create a list of EvViewSelection's for the affected
4369          * pages.  This could be an empty list, a list of just one
4370          * page or a number of pages.*/
4371         for (i = first; i < last + 1; i++) {
4372                 GdkRectangle page_area;
4373                 GtkBorder border;
4374                 GdkPoint *point;
4375
4376                 ev_page_cache_get_size (view->page_cache, i,
4377                                         view->rotation,
4378                                         1.0, &width, &height);
4379
4380                 selection = g_new0 (EvViewSelection, 1);
4381                 selection->page = i;
4382                 selection->rect.x1 = selection->rect.y1 = 0;
4383                 selection->rect.x2 = width;
4384                 selection->rect.y2 = height;
4385
4386                 get_page_extents (view, i, &page_area, &border);
4387
4388                 if (gdk_rectangle_point_in (&page_area, start))
4389                         point = start;
4390                 else
4391                         point = stop;
4392
4393                 if (i == first)
4394                         view_point_to_doc_point (view, point, &page_area,
4395                                                  &selection->rect.x1,
4396                                                  &selection->rect.y1);
4397
4398                 /* If the selection is contained within just one page,
4399                  * make sure we don't write 'start' into both points
4400                  * in selection->rect. */
4401                 if (first == last)
4402                         point = stop;
4403
4404                 if (i == last)
4405                         view_point_to_doc_point (view, point, &page_area,
4406                                                  &selection->rect.x2,
4407                                                  &selection->rect.y2);
4408
4409                 list = g_list_append (list, selection);
4410         }
4411
4412         return list;
4413 }
4414
4415 /* This function takes the newly calculated list, and figures out which regions
4416  * have changed.  It then queues a redraw approporiately.
4417  */
4418 static void
4419 merge_selection_region (EvView *view,
4420                         GList  *new_list)
4421 {
4422         GList *old_list;
4423         GList *new_list_ptr, *old_list_ptr;
4424
4425         /* Update the selection */
4426         old_list = ev_pixbuf_cache_get_selection_list (view->pixbuf_cache);
4427         g_list_foreach (view->selection_info.selections, (GFunc)selection_free, NULL);
4428         view->selection_info.selections = new_list;
4429         ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, new_list);
4430         g_object_notify (G_OBJECT (view), "has-selection");
4431
4432         new_list_ptr = new_list;
4433         old_list_ptr = old_list;
4434
4435         while (new_list_ptr || old_list_ptr) {
4436                 EvViewSelection *old_sel, *new_sel;
4437                 int cur_page;
4438                 GdkRegion *region = NULL;
4439
4440                 new_sel = (new_list_ptr) ? (new_list_ptr->data) : NULL;
4441                 old_sel = (old_list_ptr) ? (old_list_ptr->data) : NULL;
4442
4443                 /* Assume that the lists are in order, and we run through them
4444                  * comparing them, one page at a time.  We come out with the
4445                  * first page we see. */
4446                 if (new_sel && old_sel) {
4447                         if (new_sel->page < old_sel->page) {
4448                                 new_list_ptr = new_list_ptr->next;
4449                                 old_sel = NULL;
4450                         } else if (new_sel->page > old_sel->page) {
4451                                 old_list_ptr = old_list_ptr->next;
4452                                 new_sel = NULL;
4453                         } else {
4454                                 new_list_ptr = new_list_ptr->next;
4455                                 old_list_ptr = old_list_ptr->next;
4456                         }
4457                 } else if (new_sel) {
4458                         new_list_ptr = new_list_ptr->next;
4459                 } else if (old_sel) {
4460                         old_list_ptr = old_list_ptr->next;
4461                 }
4462
4463                 g_assert (new_sel || old_sel);
4464
4465                 /* is the page we're looking at on the screen?*/
4466                 cur_page = new_sel ? new_sel->page : old_sel->page;
4467                 if (cur_page < view->start_page || cur_page > view->end_page)
4468                         continue;
4469
4470                 /* seed the cache with a new page.  We are going to need the new
4471                  * region too. */
4472                 if (new_sel) {
4473                         GdkRegion *tmp_region = NULL;
4474                         ev_pixbuf_cache_get_selection_pixbuf (view->pixbuf_cache,
4475                                                               cur_page,
4476                                                               view->scale,
4477                                                               &tmp_region);
4478                         if (tmp_region) {
4479                                 new_sel->covered_region = gdk_region_copy (tmp_region);
4480                         }
4481                 }
4482
4483                 /* Now we figure out what needs redrawing */
4484                 if (old_sel && new_sel) {
4485                         if (old_sel->covered_region &&
4486                             new_sel->covered_region) {
4487                                 /* We only want to redraw the areas that have
4488                                  * changed, so we xor the old and new regions
4489                                  * and redraw if it's different */
4490                                 region = gdk_region_copy (old_sel->covered_region);
4491                                 gdk_region_xor (region, new_sel->covered_region);
4492                                 if (gdk_region_empty (region)) {
4493                                         gdk_region_destroy (region);
4494                                         region = NULL;
4495                                 }
4496                         } else if (old_sel->covered_region) {
4497                                 region = gdk_region_copy (old_sel->covered_region);
4498                         } else if (new_sel->covered_region) {
4499                                 region = gdk_region_copy (new_sel->covered_region);
4500                         }
4501                 } else if (old_sel && !new_sel) {
4502                         if (old_sel->covered_region && !gdk_region_empty (old_sel->covered_region)) {
4503                                 region = gdk_region_copy (old_sel->covered_region);
4504                         }
4505                 } else if (!old_sel && new_sel) {
4506                         if (new_sel->covered_region && !gdk_region_empty (new_sel->covered_region)) {
4507                                 region = gdk_region_copy (new_sel->covered_region);
4508                         }
4509                 } else {
4510                         g_assert_not_reached ();
4511                 }
4512
4513                 /* Redraw the damaged region! */
4514                 if (region) {
4515                         GdkRectangle page_area;
4516                         GtkBorder border;
4517
4518                         get_page_extents (view, cur_page, &page_area, &border);
4519                         gdk_region_offset (region,
4520                                            page_area.x + border.left - view->scroll_x,
4521                                            page_area.y + border.top - view->scroll_y);
4522                         gdk_window_invalidate_region (GTK_WIDGET (view)->window, region, TRUE);
4523                         gdk_region_destroy (region);
4524                 }
4525         }
4526
4527         /* Free the old list, now that we're done with it. */
4528         g_list_foreach (old_list, (GFunc) selection_free, NULL);
4529 }
4530
4531 static void
4532 compute_selections (EvView   *view,
4533                     GdkPoint *start,
4534                     GdkPoint *stop)
4535 {
4536         GList *list;
4537
4538         if (view->selection_mode == EV_VIEW_SELECTION_RECTANGLE)
4539                 list = compute_new_selection_rect (view, start, stop);
4540         else
4541                 list = compute_new_selection_text (view, start, stop);
4542         merge_selection_region (view, list);
4543 }
4544
4545 /* Free's the selection.  It's up to the caller to queue redraws if needed.
4546  */
4547 static void
4548 selection_free (EvViewSelection *selection)
4549 {
4550         if (selection->covered_region)
4551                 gdk_region_destroy (selection->covered_region);
4552         g_free (selection);
4553 }
4554
4555 static void
4556 clear_selection (EvView *view)
4557 {
4558         g_list_foreach (view->selection_info.selections, (GFunc)selection_free, NULL);
4559         view->selection_info.selections = NULL;
4560         view->selection_info.in_selection = FALSE;
4561         if (view->pixbuf_cache)
4562                 ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, NULL);
4563         g_object_notify (G_OBJECT (view), "has-selection");
4564 }
4565
4566
4567 void
4568 ev_view_select_all (EvView *view)
4569 {
4570         int n_pages, i;
4571
4572         /* Disable selection on rotated pages for the 0.4.0 series */
4573         if (view->rotation != 0)
4574                 return;
4575
4576         clear_selection (view);
4577
4578         n_pages = ev_page_cache_get_n_pages (view->page_cache);
4579         for (i = 0; i < n_pages; i++) {
4580                 int width, height;
4581                 EvViewSelection *selection;
4582
4583                 ev_page_cache_get_size (view->page_cache,
4584                                         i,
4585                                         view->rotation,
4586                                         1.0, &width, &height);
4587
4588                 selection = g_new0 (EvViewSelection, 1);
4589                 selection->page = i;
4590                 selection->rect.x1 = selection->rect.y1 = 0;
4591                 selection->rect.x2 = width;
4592                 selection->rect.y2 = height;
4593
4594                 view->selection_info.selections = g_list_append (view->selection_info.selections, selection);
4595         }
4596
4597         ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, view->selection_info.selections);
4598         g_object_notify (G_OBJECT (view), "has-selection");
4599         gtk_widget_queue_draw (GTK_WIDGET (view));
4600 }
4601
4602 gboolean
4603 ev_view_get_has_selection (EvView *view)
4604 {
4605         return view->selection_info.selections != NULL;
4606 }
4607
4608 static char *
4609 get_selected_text (EvView *ev_view)
4610 {
4611         GString *text;
4612         GList *l;
4613
4614         text = g_string_new (NULL);
4615
4616         ev_document_doc_mutex_lock ();
4617
4618         for (l = ev_view->selection_info.selections; l != NULL; l = l->next) {
4619                 EvViewSelection *selection = (EvViewSelection *)l->data;
4620                 char *tmp;
4621
4622                 tmp = ev_document_get_text (ev_view->document,
4623                                             selection->page,
4624                                             &selection->rect);
4625                 g_string_append (text, tmp);
4626                 g_free (tmp);
4627         }
4628
4629         ev_document_doc_mutex_unlock ();
4630
4631         return g_string_free (text, FALSE);
4632 }
4633
4634 void
4635 ev_view_copy (EvView *ev_view)
4636 {
4637         GtkClipboard *clipboard;
4638         char *text;
4639
4640         if (!ev_document_can_get_text (ev_view->document)) {
4641                 return;
4642         }
4643
4644         text = get_selected_text (ev_view);
4645         clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view),
4646                                               GDK_SELECTION_CLIPBOARD);
4647         gtk_clipboard_set_text (clipboard, text, -1);
4648         g_free (text);
4649 }
4650
4651 static void
4652 ev_view_primary_get_cb (GtkClipboard     *clipboard,
4653                         GtkSelectionData *selection_data,
4654                         guint             info,
4655                         gpointer          data)
4656 {
4657         EvView *ev_view = EV_VIEW (data);
4658         char *text;
4659
4660         if (!ev_document_can_get_text (ev_view->document)) {
4661                 return;
4662         }
4663
4664         text = get_selected_text (ev_view);
4665         gtk_selection_data_set_text (selection_data, text, -1);
4666         g_free (text);
4667 }
4668
4669 static void
4670 ev_view_primary_clear_cb (GtkClipboard *clipboard,
4671                           gpointer      data)
4672 {
4673         EvView *view = EV_VIEW (data);
4674
4675         clear_selection (view);
4676 }
4677
4678 static void
4679 ev_view_update_primary_selection (EvView *ev_view)
4680 {
4681         GtkClipboard *clipboard;
4682
4683         clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view),
4684                                               GDK_SELECTION_PRIMARY);
4685
4686         if (ev_view->selection_info.selections) {
4687                 if (!gtk_clipboard_set_with_owner (clipboard,
4688                                                    clipboard_targets,
4689                                                    G_N_ELEMENTS (clipboard_targets),
4690                                                    ev_view_primary_get_cb,
4691                                                    ev_view_primary_clear_cb,
4692                                                    G_OBJECT (ev_view)))
4693                         ev_view_primary_clear_cb (clipboard, ev_view);
4694         } else {
4695                 if (gtk_clipboard_get_owner (clipboard) == G_OBJECT (ev_view))
4696                         gtk_clipboard_clear (clipboard);
4697         }
4698 }
4699
4700 /*** Cursor operations ***/
4701
4702 static GdkCursor *
4703 ev_view_create_invisible_cursor(void)
4704 {
4705        GdkBitmap *empty;
4706        GdkColor black = { 0, 0, 0, 0 };
4707        static char bits[] = { 0x00 };
4708
4709        empty = gdk_bitmap_create_from_data (NULL, bits, 1, 1);
4710
4711        return gdk_cursor_new_from_pixmap (empty, empty, &black, &black, 0, 0);
4712 }
4713
4714 static void
4715 ev_view_set_cursor (EvView *view, EvViewCursor new_cursor)
4716 {
4717         GdkCursor *cursor = NULL;
4718         GdkDisplay *display;
4719         GtkWidget *widget;
4720
4721         if (view->cursor == new_cursor) {
4722                 return;
4723         }
4724
4725         widget = gtk_widget_get_toplevel (GTK_WIDGET (view));
4726         display = gtk_widget_get_display (widget);
4727         view->cursor = new_cursor;
4728
4729         switch (new_cursor) {
4730                 case EV_VIEW_CURSOR_NORMAL:
4731                         gdk_window_set_cursor (widget->window, NULL);
4732                         break;
4733                 case EV_VIEW_CURSOR_IBEAM:
4734                         cursor = gdk_cursor_new_for_display (display, GDK_XTERM);
4735                         break;
4736                 case EV_VIEW_CURSOR_LINK:
4737                         cursor = gdk_cursor_new_for_display (display, GDK_HAND2);
4738                         break;
4739                 case EV_VIEW_CURSOR_WAIT:
4740                         cursor = gdk_cursor_new_for_display (display, GDK_WATCH);
4741                         break;
4742                 case EV_VIEW_CURSOR_HIDDEN:
4743                         cursor = ev_view_create_invisible_cursor ();
4744                         break;
4745                 case EV_VIEW_CURSOR_DRAG:
4746                         cursor = gdk_cursor_new_for_display (display, GDK_FLEUR);
4747                         break;
4748         }
4749
4750         if (cursor) {
4751                 gdk_window_set_cursor (widget->window, cursor);
4752                 gdk_cursor_unref (cursor);
4753                 gdk_flush();
4754         }
4755 }
4756
4757 void
4758 ev_view_hide_cursor (EvView *view)
4759 {
4760        ev_view_set_cursor (view, EV_VIEW_CURSOR_HIDDEN);
4761 }
4762
4763 void
4764 ev_view_show_cursor (EvView *view)
4765 {
4766        ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
4767 }
4768
4769 static void
4770 ev_view_reset_presentation_state (EvView *view)
4771 {
4772         if (!view->presentation ||
4773             view->presentation_state == EV_PRESENTATION_NORMAL)
4774                 return;
4775
4776         view->presentation_state = EV_PRESENTATION_NORMAL;
4777         gdk_window_set_background (GTK_WIDGET (view)->window,
4778                                    &GTK_WIDGET (view)->style->black);
4779         gtk_widget_queue_draw (GTK_WIDGET (view));
4780 }
4781
4782 gboolean
4783 ev_view_next_page (EvView *view)
4784 {
4785         int page, n_pages;
4786
4787         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
4788
4789         if (!view->page_cache)
4790                 return FALSE;
4791
4792         ev_view_presentation_transition_stop (view);
4793         ev_view_reset_presentation_state (view);
4794
4795         page = ev_page_cache_get_current_page (view->page_cache);
4796         n_pages = ev_page_cache_get_n_pages (view->page_cache);
4797
4798         if (view->dual_page && !view->presentation)
4799                 page = page + 2;
4800         else
4801                 page = page + 1;
4802
4803         if (page < n_pages) {
4804                 ev_page_cache_set_current_page (view->page_cache, page);
4805                 return TRUE;
4806         } else if (view->presentation && page == n_pages) {
4807                 view->presentation_state = EV_PRESENTATION_END;
4808                 gtk_widget_queue_draw (GTK_WIDGET (view));
4809                 return TRUE;
4810         } else if (view->dual_page && page == n_pages) {
4811                 ev_page_cache_set_current_page (view->page_cache, page - 1);
4812                 return TRUE;
4813         } else {
4814                 return FALSE;
4815         }
4816 }
4817
4818 gboolean
4819 ev_view_previous_page (EvView *view)
4820 {
4821         int page;
4822
4823         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
4824
4825         if (!view->page_cache)
4826                 return FALSE;
4827
4828         if (view->presentation &&
4829             view->presentation_state == EV_PRESENTATION_END) {
4830                 ev_view_reset_presentation_state (view);
4831                 return TRUE;
4832         }
4833
4834         ev_view_reset_presentation_state (view);
4835
4836         page = ev_page_cache_get_current_page (view->page_cache);
4837
4838         if (view->dual_page && !view->presentation)
4839                 page = page - 2;
4840         else
4841                 page = page - 1;
4842
4843         if (page >= 0) {
4844                 ev_page_cache_set_current_page (view->page_cache, page);
4845                 return TRUE;
4846         } else if (ev_view_get_dual_page (view) && page == -1) {
4847                 ev_page_cache_set_current_page (view->page_cache, 0);
4848                 return TRUE;
4849         } else {
4850                 return FALSE;
4851         }
4852 }
4853
4854 /*** Enum description for usage in signal ***/
4855
4856 GType
4857 ev_sizing_mode_get_type (void)
4858 {
4859   static GType etype = 0;
4860   if (etype == 0) {
4861     static const GEnumValue values[] = {
4862       { EV_SIZING_FIT_WIDTH, "EV_SIZING_FIT_WIDTH", "fit-width" },
4863       { EV_SIZING_BEST_FIT, "EV_SIZING_BEST_FIT", "best-fit" },
4864       { EV_SIZING_FREE, "EV_SIZING_FREE", "free" },
4865       { 0, NULL, NULL }
4866     };
4867     etype = g_enum_register_static ("EvSizingMode", values);
4868   }
4869   return etype;
4870 }
4871
4872 GType
4873 ev_scroll_type_get_type (void)
4874 {
4875   static GType etype = 0;
4876   if (etype == 0) {
4877     static const GEnumValue values[] = {
4878       { EV_SCROLL_PAGE_FORWARD, "EV_SCROLL_PAGE_FORWARD", "scroll-page-forward" },
4879       { EV_SCROLL_PAGE_BACKWARD, "EV_SCROLL_PAGE_BACKWARD", "scroll-page-backward" },
4880       { EV_SCROLL_STEP_FORWARD, "EV_SCROLL_STEP_FORWARD", "scroll-step-forward" },
4881       { EV_SCROLL_STEP_FORWARD, "EV_SCROLL_STEP_FORWARD", "scroll-step-forward" },
4882       { EV_SCROLL_STEP_UP, "EV_SCROLL_STEP_UP", "scroll-step-up" },
4883       { EV_SCROLL_STEP_DOWN, "EV_SCROLL_STEP_DOWN", "scroll-step-down" },
4884       { 0, NULL, NULL }
4885     };
4886     etype = g_enum_register_static ("EvScrollType", values);
4887   }
4888   return etype;
4889 }