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-debug.h"
  43 #include "ev-job-queue.h"
  44 #include "ev-page-cache.h"
  45 #include "ev-pixbuf-cache.h"
  46 #include "ev-tooltip.h"
  47 #include "ev-application.h"
  48
  49 #define EV_VIEW_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass), EV_TYPE_VIEW, EvViewClass))
  50 #define EV_IS_VIEW_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), EV_TYPE_VIEW))
  51 #define EV_VIEW_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj), EV_TYPE_VIEW, EvViewClass))
  52
  53
  54 enum {
  55         PROP_0,
  56         PROP_STATUS,
  57         PROP_FIND_STATUS,
  58         PROP_CONTINUOUS,
  59         PROP_DUAL_PAGE,
  60         PROP_FULLSCREEN,
  61         PROP_PRESENTATION,
  62         PROP_SIZING_MODE,
  63         PROP_ZOOM,
  64         PROP_ROTATION,
  65         PROP_HAS_SELECTION,
  66 };
  67
  68 enum {
  69         SIGNAL_BINDING_ACTIVATED,
  70         SIGNAL_ZOOM_INVALID,
  71         SIGNAL_EXTERNAL_LINK,
  72         SIGNAL_POPUP_MENU,
  73         N_SIGNALS,
  74 };
  75
  76 enum {
  77         TARGET_DND_URI,
  78         TARGET_DND_TEXT,
  79         TARGET_DND_IMAGE
  80 };
  81
  82 enum {
  83         TARGET_STRING,
  84         TARGET_TEXT,
  85         TARGET_COMPOUND_TEXT,
  86         TARGET_UTF8_STRING,
  87         TARGET_TEXT_BUFFER_CONTENTS
  88 };
  89
  90 static const GtkTargetEntry clipboard_targets[] = {
  91         { "STRING", 0, TARGET_STRING },
  92         { "TEXT",   0, TARGET_TEXT },
  93         { "COMPOUND_TEXT", 0, TARGET_COMPOUND_TEXT },
  94         { "UTF8_STRING", 0, TARGET_UTF8_STRING },
  95 };
  96
  97 static const GtkTargetEntry view_drop_targets[] = {
  98         { "text/uri-list", 0, 0 }
  99 };
 100
 101 static guint signals[N_SIGNALS];
 102
 103 typedef enum {
 104         EV_VIEW_FIND_NEXT,
 105         EV_VIEW_FIND_PREV
 106 } EvViewFindDirection;
 107
 108 #define ZOOM_IN_FACTOR  1.2
 109 #define ZOOM_OUT_FACTOR (1.0/ZOOM_IN_FACTOR)
 110
 111 #define MIN_SCALE 0.05409
 112 #define MAX_SCALE 4.0
 113
 114 #define SCROLL_TIME 150
 115
 116 /*** Scrolling ***/
 117 static void       scroll_to_current_page                     (EvView *view,
 118                                                               GtkOrientation orientation);
 119 static void       ev_view_set_scroll_adjustments             (EvView             *view,
 120                                                               GtkAdjustment      *hadjustment,
 121                                                               GtkAdjustment      *vadjustment);
 122 static void       view_update_range_and_current_page         (EvView             *view);
 123 static void       set_scroll_adjustment                      (EvView             *view,
 124                                                               GtkOrientation      orientation,
 125                                                               GtkAdjustment      *adjustment);
 126 static void       ev_view_set_scroll_adjustments             (EvView             *view,
 127                                                               GtkAdjustment      *hadjustment,
 128                                                               GtkAdjustment      *vadjustment);
 129 static void       add_scroll_binding_keypad                  (GtkBindingSet      *binding_set,
 130                                                               guint               keyval,
 131                                                               GdkModifierType modifiers,
 132                                                               EvScrollType       scroll,
 133                                                               gboolean            horizontal);
 134 static void       ensure_rectangle_is_visible                (EvView             *view,
 135                                                               GdkRectangle       *rect);
 136
 137 /*** Geometry computations ***/
 138 static void       compute_border                             (EvView             *view,
 139                                                               int                 width,
 140                                                               int                 height,
 141                                                               GtkBorder          *border);
 142 static void       get_page_y_offset                          (EvView *view,
 143                                                               int page,
 144                                                               double zoom,
 145                                                               int *y_offset);
 146 static gboolean   get_page_extents                           (EvView             *view,
 147                                                               gint                page,
 148                                                               GdkRectangle       *page_area,
 149                                                               GtkBorder          *border);
 150 static void       view_rect_to_doc_rect                      (EvView             *view,
 151                                                               GdkRectangle       *view_rect,
 152                                                               GdkRectangle       *page_area,
 153                                                               EvRectangle        *doc_rect);
 154 static void       doc_rect_to_view_rect                      (EvView             *view,
 155                                                               int                 page,
 156                                                               EvRectangle        *doc_rect,
 157                                                               GdkRectangle       *view_rect);
 158 static void       find_page_at_location                      (EvView             *view,
 159                                                               gdouble             x,
 160                                                               gdouble             y,
 161                                                               gint               *page,
 162                                                               gint               *x_offset,
 163                                                               gint               *y_offset);
 164 static gboolean  doc_point_to_view_point                     (EvView       *view,
 165                                                               int           page,
 166                                                               EvPoint      *doc_point,
 167                                                               GdkPoint     *view_point);
 168 /*** Hyperrefs ***/
 169 static EvLink *   ev_view_get_link_at_location               (EvView  *view,
 170                                                               gdouble  x,
 171                                                               gdouble  y);
 172 static char*      tip_from_link                              (EvView             *view,
 173                                                               EvLink             *link);
 174 static void       handle_link_over_xy                        (EvView *view,
 175                                                               gint x,
 176                                                               gint y);
 177 /*** GtkWidget implementation ***/
 178 static void       ev_view_size_request_continuous_dual_page  (EvView             *view,
 179                                                               GtkRequisition     *requisition);
 180 static void       ev_view_size_request_continuous            (EvView             *view,
 181                                                               GtkRequisition     *requisition);
 182 static void       ev_view_size_request_dual_page             (EvView             *view,
 183                                                               GtkRequisition     *requisition);
 184 static void       ev_view_size_request_single_page           (EvView             *view,
 185                                                               GtkRequisition     *requisition);
 186 static void       ev_view_size_request                       (GtkWidget          *widget,
 187                                                               GtkRequisition     *requisition);
 188 static void       ev_view_size_allocate                      (GtkWidget          *widget,
 189                                                               GtkAllocation      *allocation);
 190 static void       ev_view_realize                            (GtkWidget          *widget);
 191 static gboolean   ev_view_scroll_event                       (GtkWidget          *widget,
 192                                                               GdkEventScroll     *event);
 193 static gboolean   ev_view_expose_event                       (GtkWidget          *widget,
 194                                                               GdkEventExpose     *event);
 195 static gboolean   ev_view_popup_menu                         (GtkWidget          *widget);
 196 static gboolean   ev_view_button_press_event                 (GtkWidget          *widget,
 197                                                               GdkEventButton     *event);
 198 static gboolean   ev_view_motion_notify_event                (GtkWidget          *widget,
 199                                                               GdkEventMotion     *event);
 200 static gboolean   ev_view_button_release_event               (GtkWidget          *widget,
 201                                                               GdkEventButton     *event);
 202 static gboolean   ev_view_enter_notify_event                 (GtkWidget          *widget,
 203                                                               GdkEventCrossing   *event);
 204 static gboolean   ev_view_leave_notify_event                 (GtkWidget          *widget,
 205                                                               GdkEventCrossing   *event);
 206 static void       ev_view_style_set                          (GtkWidget          *widget,
 207                                                               GtkStyle           *old_style);
 208
 209 static AtkObject *ev_view_get_accessible                     (GtkWidget *widget);
 210
 211 /*** Drawing ***/
 212 static guint32    ev_gdk_color_to_rgb                        (const GdkColor     *color);
 213 static void       draw_rubberband                            (GtkWidget          *widget,
 214                                                               GdkWindow          *window,
 215                                                               const GdkRectangle *rect,
 216                                                               guchar              alpha);
 217 static void       highlight_find_results                     (EvView             *view,
 218                                                               int                 page);
 219 static void       draw_one_page                              (EvView             *view,
 220                                                               gint                page,
 221                                                               GdkRectangle       *page_area,
 222                                                               GtkBorder          *border,
 223                                                               GdkRectangle       *expose_area,
 224                                                               gboolean           *page_ready);
 225 static void       draw_loading_text                          (EvView             *view,
 226                                                               GdkRectangle       *page_area,
 227                                                               GdkRectangle       *expose_area);
 228
 229 /*** Callbacks ***/
 230 static void       find_changed_cb                            (EvDocument         *document,
 231                                                               int                 page,
 232                                                               EvView             *view);
 233 static void       job_finished_cb                            (EvPixbufCache      *pixbuf_cache,
 234                                                               EvView             *view);
 235 static void       page_changed_cb                            (EvPageCache        *page_cache,
 236                                                               int                 new_page,
 237                                                               EvView             *view);
 238 static void       on_adjustment_value_changed                (GtkAdjustment      *adjustment,
 239                                                               EvView             *view);
 240
 241 /*** GObject ***/
 242 static void       ev_view_finalize                           (GObject            *object);
 243 static void       ev_view_destroy                            (GtkObject          *object);
 244 static void       ev_view_set_property                       (GObject            *object,
 245                                                               guint               prop_id,
 246                                                               const GValue       *value,
 247                                                               GParamSpec         *pspec);
 248 static void       ev_view_get_property                       (GObject            *object,
 249                                                               guint               prop_id,
 250                                                               GValue             *value,
 251                                                               GParamSpec         *pspec);
 252 static void       ev_view_class_init                         (EvViewClass        *class);
 253 static void       ev_view_init                               (EvView             *view);
 254
 255 /*** Zoom and sizing ***/
 256 static double   zoom_for_size_fit_width                      (int doc_width,
 257                                                               int doc_height,
 258                                                               int target_width,
 259                                                               int target_height,
 260                                                               int vsb_width);
 261 static double   zoom_for_size_fit_height                     (int doc_width,
 262                                                               int doc_height,
 263                                                               int target_width,
 264                                                               int target_height,
 265                                                               int vsb_height);
 266 static double   zoom_for_size_best_fit                       (int doc_width,
 267                                                               int doc_height,
 268                                                               int target_width,
 269                                                               int target_height,
 270                                                               int vsb_width,
 271                                                               int hsb_width);
 272 static void     ev_view_zoom_for_size_presentation           (EvView *view,
 273                                                               int     width,
 274                                                               int     height);
 275 static void     ev_view_zoom_for_size_continuous_and_dual_page (EvView *view,
 276                                                                 int     width,
 277                                                                 int     height,
 278                                                                 int     vsb_width,
 279                                                                 int     hsb_height);
 280 static void     ev_view_zoom_for_size_continuous               (EvView *view,
 281                                                                 int     width,
 282                                                                 int     height,
 283                                                                 int     vsb_width,
 284                                                                 int     hsb_height);
 285 static void     ev_view_zoom_for_size_dual_page                (EvView *view,
 286                                                                 int     width,
 287                                                                 int     height,
 288                                                                 int     vsb_width,
 289                                                                 int     hsb_height);
 290 static void     ev_view_zoom_for_size_single_page              (EvView *view,
 291                                                                 int     width,
 292                                                                 int     height,
 293                                                                 int     vsb_width,
 294                                                                 int     hsb_height);
 295 /*** Cursors ***/
 296 static GdkCursor* ev_view_create_invisible_cursor            (void);
 297 static void       ev_view_set_cursor                         (EvView             *view,
 298                                                               EvViewCursor        new_cursor);
 299
 300 /*** Status messages ***/
 301 static void       ev_view_set_status                         (EvView             *view,
 302                                                               const char         *message);
 303 static void       update_find_status_message                 (EvView             *view,
 304                                                               gboolean            this_page);
 305 static void       ev_view_set_find_status                    (EvView             *view,
 306                                                               const char         *message);
 307 /*** Find ***/
 308 static void       jump_to_find_result                        (EvView             *view);
 309 static void       jump_to_find_page                          (EvView             *view,
 310                                                               EvViewFindDirection direction,
 311                                                               gint                shift);
 312
 313 /*** Selection ***/
 314 static void       compute_selections                         (EvView             *view,
 315                                                               GdkPoint           *start,
 316                                                               GdkPoint           *stop);
 317 static void       clear_selection                            (EvView             *view);
 318 static void       selection_free                             (EvViewSelection    *selection);
 319 static char*      get_selected_text                          (EvView             *ev_view);
 320 static void       ev_view_primary_get_cb                     (GtkClipboard       *clipboard,
 321                                                               GtkSelectionData   *selection_data,
 322                                                               guint               info,
 323                                                               gpointer            data);
 324 static void       ev_view_primary_clear_cb                   (GtkClipboard       *clipboard,
 325                                                               gpointer            data);
 326 static void       ev_view_update_primary_selection           (EvView             *ev_view);
 327
 328 /*** Presentation ***/
 329 static void       ev_view_presentation_transition_start      (EvView             *ev_view);
 330 static void       ev_view_presentation_transition_stop       (EvView             *ev_view);
 331
 332
 333 G_DEFINE_TYPE (EvView, ev_view, GTK_TYPE_WIDGET)
 334
 335 static void
 336 scroll_to_current_page (EvView *view, GtkOrientation orientation)
 337 {
 338         GdkPoint view_point;
 339
 340         if (view->document == NULL) {
 341                 return;
 342         }
 343
 344         doc_point_to_view_point (view, view->current_page, &view->pending_point, &view_point);
 345
 346         if (orientation == GTK_ORIENTATION_VERTICAL) {
 347                 view->pending_point.y = 0;
 348         } else {
 349                 view->pending_point.x = 0;
 350         }
 351
 352         if (orientation == GTK_ORIENTATION_VERTICAL) {
 353                 if (view->continuous) {
 354                         gtk_adjustment_clamp_page (view->vadjustment,
 355                                                    view_point.y - view->spacing / 2,
 356                                                    view_point.y + view->vadjustment->page_size);
 357                 } else {
 358                         gtk_adjustment_set_value (view->vadjustment,
 359                                                   CLAMP (view_point.y,
 360                                                   view->vadjustment->lower,
 361                                                   view->vadjustment->upper -
 362                                                   view->vadjustment->page_size));
 363                 }
 364         } else {
 365                 if (view->dual_page) {
 366                         gtk_adjustment_clamp_page (view->hadjustment,
 367                                                    view_point.x,
 368                                                    view_point.x + view->hadjustment->page_size);
 369                 } else {
 370                         gtk_adjustment_set_value (view->hadjustment,
 371                                                   CLAMP (view_point.x,
 372                                                   view->hadjustment->lower,
 373                                                   view->hadjustment->upper -
 374                                                   view->hadjustment->page_size));
 375                 }
 376         }
 377 }
 378
 379 static void
 380 view_set_adjustment_values (EvView         *view,
 381                             GtkOrientation  orientation)
 382 {
 383         GtkWidget *widget = GTK_WIDGET (view);
 384         GtkAdjustment *adjustment;
 385         int requisition;
 386         int allocation;
 387
 388         double factor;
 389         gint new_value;
 390
 391         if (orientation == GTK_ORIENTATION_HORIZONTAL)  {
 392                 requisition = widget->requisition.width;
 393                 allocation = widget->allocation.width;
 394                 adjustment = view->hadjustment;
 395         } else {
 396                 requisition = widget->requisition.height;
 397                 allocation = widget->allocation.height;
 398                 adjustment = view->vadjustment;
 399         }
 400
 401         if (!adjustment)
 402                 return;
 403
 404         factor = 1.0;
 405         switch (view->pending_scroll) {
 406                 case SCROLL_TO_KEEP_POSITION:
 407                 case SCROLL_TO_FIND_LOCATION:
 408                         factor = (adjustment->value) / adjustment->upper;
 409                         break;
 410                 case SCROLL_TO_PAGE_POSITION:
 411                         break;
 412                 case SCROLL_TO_CENTER:
 413                         factor = (adjustment->value + adjustment->page_size * 0.5) / adjustment->upper;
 414                         break;
 415         }
 416
 417         adjustment->page_size = allocation;
 418         adjustment->step_increment = allocation * 0.1;
 419         adjustment->page_increment = allocation * 0.9;
 420         adjustment->lower = 0;
 421         adjustment->upper = MAX (allocation, requisition);
 422
 423         /*
 424          * We add 0.5 to the values before to average out our rounding errors.
 425          */
 426         switch (view->pending_scroll) {
 427                 case SCROLL_TO_KEEP_POSITION:
 428                 case SCROLL_TO_FIND_LOCATION:
 429                         new_value = CLAMP (adjustment->upper * factor + 0.5, 0, adjustment->upper - adjustment->page_size);
 430                         gtk_adjustment_set_value (adjustment, (int)new_value);
 431                         break;
 432                 case SCROLL_TO_PAGE_POSITION:
 433                         scroll_to_current_page (view, orientation);
 434                         break;
 435                 case SCROLL_TO_CENTER:
 436                         new_value = CLAMP (adjustment->upper * factor - adjustment->page_size * 0.5 + 0.5,
 437                                            0, adjustment->upper - adjustment->page_size);
 438                         gtk_adjustment_set_value (adjustment, (int)new_value);
 439                         break;
 440         }
 441
 442         gtk_adjustment_changed (adjustment);
 443 }
 444
 445 static void
 446 view_update_range_and_current_page (EvView *view)
 447 {
 448         gint current_page;
 449         gint best_current_page = -1;
 450
 451         /* Presentation trumps all other modes */
 452         if (view->presentation) {
 453                 view->start_page = view->current_page;
 454                 view->end_page = view->current_page;
 455         } else if (view->continuous) {
 456                 GdkRectangle current_area, unused, page_area;
 457                 GtkBorder border;
 458                 gboolean found = FALSE;
 459                 gint area_max = -1, area;
 460                 int i;
 461
 462                 if (!(view->vadjustment && view->hadjustment))
 463                         return;
 464
 465                 current_area.x = view->hadjustment->value;
 466                 current_area.width = view->hadjustment->upper;
 467                 current_area.y = view->vadjustment->value;
 468                 current_area.height = view->vadjustment->page_size;
 469
 470                 for (i = 0; i < ev_page_cache_get_n_pages (view->page_cache); i++) {
 471
 472                         get_page_extents (view, i, &page_area, &border);
 473
 474                         if (gdk_rectangle_intersect (&current_area, &page_area, &unused)) {
 475                                 area = unused.width * unused.height;
 476
 477                                 if (!found) {
 478                                         area_max = area;
 479                                         view->start_page = i;
 480                                         found = TRUE;
 481                                         best_current_page = i;
 482                                 }
 483                                 if (area > area_max) {
 484                                         best_current_page = (area == area_max) ? MIN (i, best_current_page) : i;
 485                                         area_max = area;
 486                                 }
 487
 488                                 view->end_page = i;
 489                         } else if (found) {
 490                                 break;
 491                         }
 492                 }
 493
 494         } else if (view->dual_page) {
 495                 if (view->current_page % 2 == ev_page_cache_get_dual_even_left (view->page_cache)) {
 496                         view->start_page = view->current_page;
 497                         if (view->current_page + 1 < ev_page_cache_get_n_pages (view->page_cache))
 498                                 view->end_page = view->start_page + 1;
 499                         else
 500                                 view->end_page = view->start_page;
 501                 } else {
 502                         if (view->current_page < 1)
 503                                 view->start_page = view->current_page;
 504                         else
 505                                 view->start_page = view->current_page - 1;
 506                         view->end_page = view->current_page;
 507                 }
 508         } else {
 509                 view->start_page = view->current_page;
 510                 view->end_page = view->current_page;
 511         }
 512
 513         best_current_page = MAX (best_current_page, view->start_page);
 514         current_page = ev_page_cache_get_current_page (view->page_cache);
 515
 516         if ((current_page != best_current_page) && (view->pending_scroll == SCROLL_TO_KEEP_POSITION)) {
 517                 view->current_page = best_current_page;
 518                 ev_page_cache_set_current_page (view->page_cache, best_current_page);
 519         }
 520
 521         ev_pixbuf_cache_set_page_range (view->pixbuf_cache,
 522                                         view->start_page,
 523                                         view->end_page,
 524                                         view->rotation,
 525                                         view->scale,
 526                                         view->selection_info.selections);
 527 }
 528
 529 static void
 530 set_scroll_adjustment (EvView *view,
 531                        GtkOrientation  orientation,
 532                        GtkAdjustment  *adjustment)
 533 {
 534         GtkAdjustment **to_set;
 535
 536         if (orientation == GTK_ORIENTATION_HORIZONTAL)
 537                 to_set = &view->hadjustment;
 538         else
 539                 to_set = &view->vadjustment;
 540
 541         if (*to_set != adjustment) {
 542                 if (*to_set) {
 543                         g_signal_handlers_disconnect_by_func (*to_set,
 544                                                               (gpointer) on_adjustment_value_changed,
 545                                                               view);
 546                         g_object_unref (*to_set);
 547                 }
 548
 549                 *to_set = adjustment;
 550                 view_set_adjustment_values (view, orientation);
 551
 552                 if (*to_set) {
 553                         g_object_ref (*to_set);
 554                         g_signal_connect (*to_set, "value_changed",
 555                                           G_CALLBACK (on_adjustment_value_changed), view);
 556                 }
 557         }
 558 }
 559
 560 static void
 561 ev_view_set_scroll_adjustments (EvView *view,
 562                                 GtkAdjustment  *hadjustment,
 563                                 GtkAdjustment  *vadjustment)
 564 {
 565         set_scroll_adjustment (view, GTK_ORIENTATION_HORIZONTAL, hadjustment);
 566         set_scroll_adjustment (view, GTK_ORIENTATION_VERTICAL, vadjustment);
 567
 568         on_adjustment_value_changed (NULL, view);
 569 }
 570
 571 static void
 572 add_scroll_binding_keypad (GtkBindingSet  *binding_set,
 573                            guint           keyval,
 574                            GdkModifierType modifiers,
 575                            EvScrollType    scroll,
 576                            gboolean        horizontal)
 577 {
 578   guint keypad_keyval = keyval - GDK_Left + GDK_KP_Left;
 579
 580   gtk_binding_entry_add_signal (binding_set, keyval, modifiers,
 581                                 "binding_activated", 2,
 582                                 EV_TYPE_SCROLL_TYPE, scroll,
 583                                 G_TYPE_BOOLEAN, horizontal);
 584   gtk_binding_entry_add_signal (binding_set, keypad_keyval, modifiers,
 585                                 "binding_activated", 2,
 586                                 EV_TYPE_SCROLL_TYPE, scroll,
 587                                 G_TYPE_BOOLEAN, horizontal);
 588 }
 589
 590 void
 591 ev_view_scroll (EvView        *view,
 592                 EvScrollType   scroll,
 593                 gboolean horizontal)
 594 {
 595         GtkAdjustment *adjustment;
 596         double value, increment;
 597         gboolean first_page = FALSE;
 598         gboolean last_page = FALSE;
 599
 600         view->jump_to_find_result = FALSE;
 601
 602         if (view->presentation || view->sizing_mode == EV_SIZING_BEST_FIT) {
 603                 switch (scroll) {
 604                         case EV_SCROLL_PAGE_BACKWARD:
 605                         case EV_SCROLL_STEP_BACKWARD:
 606                                 ev_view_previous_page (view);
 607                                 break;
 608                         case EV_SCROLL_PAGE_FORWARD:
 609                         case EV_SCROLL_STEP_FORWARD:
 610                                 ev_view_next_page (view);
 611                                 break;
 612                         default:
 613                                 break;
 614                 }
 615                 return;
 616         }
 617
 618         /* Assign values for increment and vertical adjustment */
 619         adjustment = horizontal ? view->hadjustment : view->vadjustment;
 620         increment = adjustment->page_size * 0.75;
 621         value = adjustment->value;
 622
 623         /* Assign boolean for first and last page */
 624         if (view->current_page == 0)
 625                 first_page = TRUE;
 626         if (view->current_page == ev_page_cache_get_n_pages (view->page_cache) - 1)
 627                 last_page = TRUE;
 628
 629         switch (scroll) {
 630                 case EV_SCROLL_PAGE_BACKWARD:
 631                         /* Do not jump backwards if at the first page */
 632                         if (value == (adjustment->lower) && first_page) {
 633                                 /* Do nothing */
 634                                 /* At the top of a page, assign the upper bound limit of previous page */
 635                         } else if (value == (adjustment->lower)) {
 636                                 value = adjustment->upper - adjustment->page_size;
 637                                 ev_view_previous_page (view);
 638                                 /* Jump to the top */
 639                         } else {
 640                                 value = MAX (value - increment, adjustment->lower);
 641                         }
 642                         break;
 643                 case EV_SCROLL_PAGE_FORWARD:
 644                         /* Do not jump forward if at the last page */
 645                         if (value == (adjustment->upper - adjustment->page_size) && last_page) {
 646                                 /* Do nothing */
 647                         /* At the bottom of a page, assign the lower bound limit of next page */
 648                         } else if (value == (adjustment->upper - adjustment->page_size)) {
 649                                 value = 0;
 650                                 ev_view_next_page (view);
 651                         /* Jump to the bottom */
 652                         } else {
 653                                 value = MIN (value + increment, adjustment->upper - adjustment->page_size);
 654                         }
 655                         break;
 656                 case EV_SCROLL_STEP_BACKWARD:
 657                         value -= adjustment->step_increment;
 658                         break;
 659                 case EV_SCROLL_STEP_FORWARD:
 660                         value += adjustment->step_increment;
 661                         break;
 662                 case EV_SCROLL_STEP_DOWN:
 663                         value -= adjustment->step_increment / 10;
 664                         break;
 665                 case EV_SCROLL_STEP_UP:
 666                         value += adjustment->step_increment / 10;
 667                         break;
 668                 default:
 669                         break;
 670         }
 671
 672         value = CLAMP (value, adjustment->lower,
 673                        adjustment->upper - adjustment->page_size);
 674
 675         gtk_adjustment_set_value (adjustment, value);
 676 }
 677
 678 #define MARGIN 5
 679
 680 static void
 681 ensure_rectangle_is_visible (EvView *view, GdkRectangle *rect)
 682 {
 683         GtkWidget *widget = GTK_WIDGET (view);
 684         GtkAdjustment *adjustment;
 685         int value;
 686
 687         view->pending_scroll = SCROLL_TO_FIND_LOCATION;
 688
 689         adjustment = view->vadjustment;
 690
 691         if (rect->y < adjustment->value) {
 692                 value = MAX (adjustment->lower, rect->y - MARGIN);
 693                 gtk_adjustment_set_value (view->vadjustment, value);
 694         } else if (rect->y + rect->height >
 695                    adjustment->value + widget->allocation.height) {
 696                 value = MIN (adjustment->upper, rect->y + rect->height -
 697                              widget->allocation.height + MARGIN);
 698                 gtk_adjustment_set_value (view->vadjustment, value);
 699         }
 700
 701         adjustment = view->hadjustment;
 702
 703         if (rect->x < adjustment->value) {
 704                 value = MAX (adjustment->lower, rect->x - MARGIN);
 705                 gtk_adjustment_set_value (view->hadjustment, value);
 706         } else if (rect->x + rect->height >
 707                    adjustment->value + widget->allocation.width) {
 708                 value = MIN (adjustment->upper, rect->x + rect->width -
 709                              widget->allocation.width + MARGIN);
 710                 gtk_adjustment_set_value (view->hadjustment, value);
 711         }
 712
 713         gtk_widget_queue_resize (GTK_WIDGET (view));
 714 }
 715
 716 /*** Geometry computations ***/
 717
 718 static void
 719 compute_border (EvView *view, int width, int height, GtkBorder *border)
 720 {
 721         if (view->presentation) {
 722                 border->left = 0;
 723                 border->right = 0;
 724                 border->top = 0;
 725                 border->bottom = 0;
 726         } else {
 727                 ev_document_misc_get_page_border_size (width, height, border);
 728         }
 729 }
 730
 731 static void
 732 get_page_y_offset (EvView *view, int page, double zoom, int *y_offset)
 733 {
 734         int max_width, offset;
 735         GtkBorder border;
 736
 737         g_return_if_fail (y_offset != NULL);
 738
 739         ev_page_cache_get_max_width (view->page_cache, view->rotation, zoom, &max_width);
 740
 741         compute_border (view, max_width, max_width, &border);
 742
 743         if (view->dual_page) {
 744                 ev_page_cache_get_height_to_page (view->page_cache, page,
 745                                                   view->rotation, zoom, NULL, &offset);
 746                 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);
 747         } else {
 748                 ev_page_cache_get_height_to_page (view->page_cache, page,
 749                                                   view->rotation, zoom, &offset, NULL);
 750                 offset += (page + 1) * view->spacing + page * (border.top + border.bottom);
 751         }
 752
 753         *y_offset = offset;
 754         return;
 755 }
 756
 757 static gboolean
 758 get_page_extents (EvView       *view,
 759                   gint          page,
 760                   GdkRectangle *page_area,
 761                   GtkBorder    *border)
 762 {
 763         GtkWidget *widget;
 764         int width, height;
 765
 766         widget = GTK_WIDGET (view);
 767
 768         /* Get the size of the page */
 769         ev_page_cache_get_size (view->page_cache, page,
 770                                 view->rotation,
 771                                 view->scale,
 772                                 &width, &height);
 773         compute_border (view, width, height, border);
 774         page_area->width = width + border->left + border->right;
 775         page_area->height = height + border->top + border->bottom;
 776
 777         if (view->presentation) {
 778                 page_area->x = (MAX (0, widget->allocation.width - width))/2;
 779                 page_area->y = (MAX (0, widget->allocation.height - height))/2;
 780         } else if (view->continuous) {
 781                 gint max_width;
 782                 gint x, y;
 783
 784                 ev_page_cache_get_max_width (view->page_cache, view->rotation,
 785                                              view->scale, &max_width);
 786                 max_width = max_width + border->left + border->right;
 787                 /* Get the location of the bounding box */
 788                 if (view->dual_page) {
 789                         x = view->spacing + ((page % 2 == ev_page_cache_get_dual_even_left (view->page_cache)) ? 0 : 1) * (max_width + view->spacing);
 790                         x = x + MAX (0, widget->allocation.width - (max_width * 2 + view->spacing * 3)) / 2;
 791                         if (page % 2 == ev_page_cache_get_dual_even_left (view->page_cache))
 792                                 x = x + (max_width - width - border->left - border->right);
 793                 } else {
 794                         x = view->spacing;
 795                         x = x + MAX (0, widget->allocation.width - (width + view->spacing * 2)) / 2;
 796                 }
 797
 798                 get_page_y_offset (view, page, view->scale, &y);
 799
 800                 page_area->x = x;
 801                 page_area->y = y;
 802         } else {
 803                 gint x, y;
 804                 if (view->dual_page) {
 805                         gint width_2, height_2;
 806                         gint max_width = width;
 807                         gint max_height = height;
 808                         GtkBorder overall_border;
 809                         gint other_page;
 810
 811                         other_page = (page % 2 == ev_page_cache_get_dual_even_left (view->page_cache)) ? page + 1: page - 1;
 812
 813                         /* First, we get the bounding box of the two pages */
 814                         if (other_page < ev_page_cache_get_n_pages (view->page_cache)
 815                             && (0 <= other_page)) {
 816                                 ev_page_cache_get_size (view->page_cache,
 817                                                         other_page,
 818                                                         view->rotation,
 819                                                         view->scale,
 820                                                         &width_2, &height_2);
 821                                 if (width_2 > width)
 822                                         max_width = width_2;
 823                                 if (height_2 > height)
 824                                         max_height = height_2;
 825                         }
 826                         compute_border (view, max_width, max_height, &overall_border);
 827
 828                         /* Find the offsets */
 829                         x = view->spacing;
 830                         y = view->spacing;
 831
 832                         /* Adjust for being the left or right page */
 833                         if (page % 2 == ev_page_cache_get_dual_even_left (view->page_cache))
 834                                 x = x + max_width - width;
 835                         else
 836                                 x = x + (max_width + overall_border.left + overall_border.right) + view->spacing;
 837
 838                         y = y + (max_height - height)/2;
 839
 840                         /* Adjust for extra allocation */
 841                         x = x + MAX (0, widget->allocation.width -
 842                                      ((max_width + overall_border.left + overall_border.right) * 2 + view->spacing * 3))/2;
 843                         y = y + MAX (0, widget->allocation.height - (height + view->spacing * 2))/2;
 844                 } else {
 845                         x = view->spacing;
 846                         y = view->spacing;
 847
 848                         /* Adjust for extra allocation */
 849                         x = x + MAX (0, widget->allocation.width - (width + border->left + border->right + view->spacing * 2))/2;
 850                         y = y + MAX (0, widget->allocation.height - (height + border->top + border->bottom +  view->spacing * 2))/2;
 851                 }
 852
 853                 page_area->x = x;
 854                 page_area->y = y;
 855         }
 856
 857         return TRUE;
 858 }
 859
 860 static void
 861 view_point_to_doc_point (EvView *view,
 862                          GdkPoint *view_point,
 863                          GdkRectangle *page_area,
 864                          double  *doc_point_x,
 865                          double  *doc_point_y)
 866 {
 867         *doc_point_x = (double) (view_point->x - page_area->x) / view->scale;
 868         *doc_point_y = (double) (view_point->y - page_area->y) / view->scale;
 869 }
 870
 871 static void
 872 view_rect_to_doc_rect (EvView *view,
 873                        GdkRectangle *view_rect,
 874                        GdkRectangle *page_area,
 875                        EvRectangle  *doc_rect)
 876 {
 877         doc_rect->x1 = (double) (view_rect->x - page_area->x) / view->scale;
 878         doc_rect->y1 = (double) (view_rect->y - page_area->y) / view->scale;
 879         doc_rect->x2 = doc_rect->x1 + (double) view_rect->width / view->scale;
 880         doc_rect->y2 = doc_rect->y1 + (double) view_rect->height / view->scale;
 881 }
 882
 883 static gboolean
 884 doc_point_to_view_point (EvView       *view,
 885                          int           page,
 886                          EvPoint      *doc_point,
 887                          GdkPoint     *view_point)
 888 {
 889         GdkRectangle page_area;
 890         GtkBorder border;
 891         double x, y, view_x, view_y;
 892         int width, height;
 893
 894         ev_page_cache_get_size (view->page_cache, page,
 895                                 view->rotation,
 896                                 1.0,
 897                                 &width, &height);
 898
 899         if (view->rotation == 0) {
 900                 x = doc_point->x;
 901                 y = doc_point->y;
 902         } else if (view->rotation == 90) {
 903                 x = width - doc_point->y;
 904                 y = doc_point->x;
 905         } else if (view->rotation == 180) {
 906                 x = width - doc_point->x;
 907                 y = height - doc_point->y;
 908         } else if (view->rotation == 270) {
 909                 x = doc_point->y;
 910                 y = height - doc_point->x;
 911         } else {
 912                 g_assert_not_reached ();
 913         }
 914
 915         get_page_extents (view, page, &page_area, &border);
 916
 917         view_x = x * view->scale;
 918         view_y = y * view->scale;
 919         view_point->x = view_x + page_area.x;
 920         view_point->y = view_y + page_area.y;
 921
 922         return (view_x > 0 && view_x <= page_area.width &&
 923                 view_y > 0 && view_y <= page_area.height);
 924 }
 925
 926 static void
 927 doc_rect_to_view_rect (EvView       *view,
 928                        int           page,
 929                        EvRectangle  *doc_rect,
 930                        GdkRectangle *view_rect)
 931 {
 932         GdkRectangle page_area;
 933         GtkBorder border;
 934         double x, y, w, h;
 935         int width, height;
 936
 937         ev_page_cache_get_size (view->page_cache, page,
 938                                 view->rotation,
 939                                 1.0,
 940                                 &width, &height);
 941
 942         if (view->rotation == 0) {
 943                 x = doc_rect->x1;
 944                 y = doc_rect->y1;
 945                 w = doc_rect->x2 - doc_rect->x1;
 946                 h = doc_rect->y2 - doc_rect->y1;
 947         } else if (view->rotation == 90) {
 948                 x = width - doc_rect->y2;
 949                 y = doc_rect->x1;
 950                 w = doc_rect->y2 - doc_rect->y1;
 951                 h = doc_rect->x2 - doc_rect->x1;
 952         } else if (view->rotation == 180) {
 953                 x = width - doc_rect->x2;
 954                 y = height - doc_rect->y2;
 955                 w = doc_rect->x2 - doc_rect->x1;
 956                 h = doc_rect->y2 - doc_rect->y1;
 957         } else if (view->rotation == 270) {
 958                 x = doc_rect->y1;
 959                 y = height - doc_rect->x2;
 960                 w = doc_rect->y2 - doc_rect->y1;
 961                 h = doc_rect->x2 - doc_rect->x1;
 962         } else {
 963                 g_assert_not_reached ();
 964         }
 965
 966         get_page_extents (view, page, &page_area, &border);
 967
 968         view_rect->x = x * view->scale + page_area.x;
 969         view_rect->y = y * view->scale + page_area.y;
 970         view_rect->width = w * view->scale;
 971         view_rect->height = h * view->scale;
 972 }
 973
 974 static void
 975 find_page_at_location (EvView  *view,
 976                        gdouble  x,
 977                        gdouble  y,
 978                        gint    *page,
 979                        gint    *x_offset,
 980                        gint    *y_offset)
 981 {
 982         int i;
 983
 984         if (view->document == NULL)
 985                 return;
 986
 987         g_assert (page);
 988         g_assert (x_offset);
 989         g_assert (y_offset);
 990
 991         for (i = view->start_page; i <= view->end_page; i++) {
 992                 GdkRectangle page_area;
 993                 GtkBorder border;
 994
 995                 if (! get_page_extents (view, i, &page_area, &border))
 996                         continue;
 997
 998                 if ((x >= page_area.x + border.left) &&
 999                     (x < page_area.x + page_area.width - border.right) &&
1000                     (y >= page_area.y + border.top) &&
1001                     (y < page_area.y + page_area.height - border.bottom)) {
1002                         *page = i;
1003                         *x_offset = x - (page_area.x + border.left);
1004                         *y_offset = y - (page_area.y + border.top);
1005                         return;
1006                 }
1007         }
1008
1009         *page = -1;
1010 }
1011
1012 static gboolean
1013 location_in_text (EvView  *view,
1014                   gdouble  x,
1015                   gdouble  y)
1016 {
1017         GdkRegion *region;
1018         gint page = -1;
1019         gint x_offset = 0, y_offset = 0;
1020
1021         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1022
1023         if (page == -1)
1024                 return FALSE;
1025
1026         region = ev_pixbuf_cache_get_text_mapping (view->pixbuf_cache, page);
1027
1028         if (region)
1029                 return gdk_region_point_in (region, x_offset / view->scale, y_offset / view->scale);
1030         else
1031                 return FALSE;
1032 }
1033
1034 static int
1035 ev_view_get_width (EvView *view)
1036 {
1037         return GTK_WIDGET (view)->allocation.width;
1038 }
1039
1040 static int
1041 ev_view_get_height (EvView *view)
1042 {
1043         return GTK_WIDGET (view)->allocation.height;
1044 }
1045
1046 static gboolean
1047 location_in_selected_text (EvView  *view,
1048                            gdouble  x,
1049                            gdouble  y)
1050 {
1051         gint page = -1;
1052         gint x_offset = 0, y_offset = 0;
1053         EvViewSelection *selection;
1054         GList *l = NULL;
1055
1056         for (l = view->selection_info.selections; l != NULL; l = l->next) {
1057                 selection = (EvViewSelection *)l->data;
1058
1059                 find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1060
1061                 if (page != selection->page)
1062                         continue;
1063
1064                 if (selection->covered_region &&
1065                     gdk_region_point_in (selection->covered_region, x_offset, y_offset))
1066                         return TRUE;
1067         }
1068
1069         return FALSE;
1070 }
1071
1072 static gboolean
1073 get_doc_point_from_offset (EvView *view,
1074                            gint    page,
1075                            gint    x_offset,
1076                            gint    y_offset,
1077                            gint   *x_new,
1078                            gint   *y_new)
1079 {
1080         int width, height;
1081         double x, y;
1082
1083         ev_page_cache_get_size (view->page_cache, page,
1084                                 view->rotation,
1085                                 1.0,
1086                                 &width, &height);
1087
1088         x_offset = x_offset / view->scale;
1089         y_offset = y_offset / view->scale;
1090
1091         if (view->rotation == 0) {
1092                 x = x_offset;
1093                 y = y_offset;
1094         } else if (view->rotation == 90) {
1095                 x = y_offset;
1096                 y = width - x_offset;
1097         } else if (view->rotation == 180) {
1098                 x = width - x_offset;
1099                 y = height - y_offset;
1100         } else if (view->rotation == 270) {
1101                 x = height - y_offset;
1102                 y = x_offset;
1103         } else {
1104                 g_assert_not_reached ();
1105         }
1106
1107         *x_new = x;
1108         *y_new = y;
1109
1110         return TRUE;
1111 }
1112
1113 /*** Hyperref ***/
1114 static EvLink *
1115 ev_view_get_link_at_location (EvView  *view,
1116                               gdouble  x,
1117                               gdouble  y)
1118 {
1119         gint page = -1;
1120         gint x_offset = 0, y_offset = 0;
1121         gint x_new = 0, y_new = 0;
1122         GList *link_mapping;
1123
1124         if (!EV_IS_DOCUMENT_LINKS (view->document))
1125                 return NULL;
1126
1127         x += view->scroll_x;
1128         y += view->scroll_y;
1129
1130         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1131
1132         if (page == -1)
1133                 return NULL;
1134
1135
1136         if (get_doc_point_from_offset (view, page, x_offset,
1137                                        y_offset, &x_new, &y_new) == FALSE)
1138                 return NULL;
1139
1140         link_mapping = ev_pixbuf_cache_get_link_mapping (view->pixbuf_cache, page);
1141
1142         if (link_mapping)
1143                 return ev_link_mapping_find (link_mapping, x_new, y_new);
1144         else
1145                 return NULL;
1146 }
1147
1148 static void
1149 goto_fitr_dest (EvView *view, EvLinkDest *dest)
1150 {
1151         EvPoint doc_point;
1152         double zoom;
1153
1154         zoom = zoom_for_size_best_fit (ev_link_dest_get_right (dest) - ev_link_dest_get_left (dest),
1155                                        ev_link_dest_get_bottom (dest) - ev_link_dest_get_top (dest),
1156                                        ev_view_get_width (view),
1157                                        ev_view_get_height (view), 0, 0);
1158
1159         ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1160         ev_view_set_zoom (view, zoom, FALSE);
1161
1162         doc_point.x = ev_link_dest_get_left (dest);
1163         doc_point.y = ev_link_dest_get_top (dest);
1164
1165         view->current_page = ev_link_dest_get_page (dest);
1166         view->pending_point = doc_point;
1167         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1168
1169         gtk_widget_queue_resize (GTK_WIDGET (view));
1170 }
1171
1172 static void
1173 goto_fitv_dest (EvView *view, EvLinkDest *dest)
1174 {
1175         EvPoint doc_point;
1176         int doc_width, doc_height, page;
1177         double zoom;
1178
1179         page = ev_link_dest_get_page (dest);
1180         ev_page_cache_get_size (view->page_cache, page, 0, 1.0, &doc_width, &doc_height);
1181
1182         doc_point.x = ev_link_dest_get_left (dest);
1183         doc_point.y = 0;
1184
1185         zoom = zoom_for_size_fit_height (doc_width - doc_point.x , doc_height,
1186                                          ev_view_get_width (view),
1187                                          ev_view_get_height (view), 0);
1188
1189         ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1190         ev_view_set_zoom (view, zoom, FALSE);
1191
1192         view->current_page = page;
1193         view->pending_point = doc_point;
1194         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1195
1196         gtk_widget_queue_resize (GTK_WIDGET (view));
1197 }
1198
1199 static void
1200 goto_fith_dest (EvView *view, EvLinkDest *dest)
1201 {
1202         EvPoint doc_point;
1203         int doc_width, doc_height, page;
1204         double zoom;
1205
1206         page = ev_link_dest_get_page (dest);
1207         ev_page_cache_get_size (view->page_cache, page, 0, 1.0, &doc_width, &doc_height);
1208
1209         doc_point.x = 0;
1210         doc_point.y = ev_link_dest_get_top (dest);
1211
1212         zoom = zoom_for_size_fit_width (doc_width, ev_link_dest_get_top (dest),
1213                                         ev_view_get_width (view),
1214                                         ev_view_get_height (view), 0);
1215
1216         ev_view_set_sizing_mode (view, EV_SIZING_FIT_WIDTH);
1217         ev_view_set_zoom (view, zoom, FALSE);
1218
1219         view->current_page = page;
1220         view->pending_point = doc_point;
1221         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1222
1223         gtk_widget_queue_resize (GTK_WIDGET (view));
1224 }
1225
1226 static void
1227 goto_fit_dest (EvView *view, EvLinkDest *dest)
1228 {
1229         double zoom;
1230         int doc_width, doc_height;
1231         int page;
1232
1233         page = ev_link_dest_get_page (dest);
1234         ev_page_cache_get_size (view->page_cache, page, 0, 1.0, &doc_width, &doc_height);
1235
1236         zoom = zoom_for_size_best_fit (doc_width, doc_height, ev_view_get_width (view),
1237                                        ev_view_get_height (view), 0, 0);
1238
1239         ev_view_set_sizing_mode (view, EV_SIZING_BEST_FIT);
1240         ev_view_set_zoom (view, zoom, FALSE);
1241
1242         view->current_page = page;
1243         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1244
1245         gtk_widget_queue_resize (GTK_WIDGET (view));
1246 }
1247
1248 static void
1249 goto_xyz_dest (EvView *view, EvLinkDest *dest)
1250 {
1251         EvPoint doc_point;
1252         gint page;
1253         double zoom;
1254
1255         zoom = ev_link_dest_get_zoom (dest);
1256         page = ev_link_dest_get_page (dest);
1257
1258         if (zoom > 1) {
1259                 ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1260                 ev_view_set_zoom (view, zoom, FALSE);
1261         }
1262
1263         doc_point.x = ev_link_dest_get_left (dest);
1264         doc_point.y = ev_link_dest_get_top (dest);
1265
1266         view->current_page = page;
1267         view->pending_point = doc_point;
1268         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1269
1270         gtk_widget_queue_resize (GTK_WIDGET (view));
1271 }
1272
1273 static void
1274 goto_dest (EvView *view, EvLinkDest *dest)
1275 {
1276         EvLinkDestType type;
1277         int page, n_pages, current_page;
1278
1279         page = ev_link_dest_get_page (dest);
1280         n_pages = ev_page_cache_get_n_pages (view->page_cache);
1281
1282         if (page < 0 || page >= n_pages)
1283                 return;
1284
1285         current_page = view->current_page;
1286
1287         type = ev_link_dest_get_dest_type (dest);
1288
1289         switch (type) {
1290                 case EV_LINK_DEST_TYPE_PAGE:
1291                         ev_page_cache_set_current_page (view->page_cache, page);
1292                         break;
1293                 case EV_LINK_DEST_TYPE_FIT:
1294                         goto_fit_dest (view, dest);
1295                         break;
1296                 case EV_LINK_DEST_TYPE_FITH:
1297                         goto_fith_dest (view, dest);
1298                         break;
1299                 case EV_LINK_DEST_TYPE_FITV:
1300                         goto_fitv_dest (view, dest);
1301                         break;
1302                 case EV_LINK_DEST_TYPE_FITR:
1303                         goto_fitr_dest (view, dest);
1304                         break;
1305                 case EV_LINK_DEST_TYPE_XYZ:
1306                         goto_xyz_dest (view, dest);
1307                         break;
1308                 case EV_LINK_DEST_TYPE_PAGE_LABEL:
1309                         ev_page_cache_set_page_label (view->page_cache, ev_link_dest_get_page_label (dest));
1310                         break;
1311                 default:
1312                         g_assert_not_reached ();
1313         }
1314
1315         if (current_page != view->current_page)
1316                 ev_page_cache_set_current_page (view->page_cache,
1317                                                 view->current_page);
1318 }
1319
1320 void
1321 ev_view_goto_dest (EvView *view, EvLinkDest *dest)
1322 {
1323         EvLinkDestType type;
1324
1325         type = ev_link_dest_get_dest_type (dest);
1326
1327         if (type == EV_LINK_DEST_TYPE_NAMED) {
1328                 EvLinkDest  *dest2;
1329                 const gchar *named_dest;
1330
1331                 named_dest = ev_link_dest_get_named_dest (dest);
1332                 dest2 = ev_document_links_find_link_dest (EV_DOCUMENT_LINKS (view->document),
1333                                                           named_dest);
1334                 if (dest2) {
1335                         goto_dest (view, dest2);
1336                         g_object_unref (dest2);
1337                 }
1338
1339                 return;
1340         }
1341
1342         goto_dest (view, dest);
1343 }
1344
1345 void
1346 ev_view_handle_link (EvView *view, EvLink *link)
1347 {
1348         EvLinkAction    *action = NULL;
1349         EvLinkActionType type;
1350
1351         action = ev_link_get_action (link);
1352         if (!action)
1353                 return;
1354
1355         type = ev_link_action_get_action_type (action);
1356
1357         switch (type) {
1358                 case EV_LINK_ACTION_TYPE_GOTO_DEST: {
1359                         EvLinkDest *dest;
1360
1361                         dest = ev_link_action_get_dest (action);
1362                         ev_view_goto_dest (view, dest);
1363                 }
1364                         break;
1365                 case EV_LINK_ACTION_TYPE_GOTO_REMOTE:
1366                 case EV_LINK_ACTION_TYPE_EXTERNAL_URI:
1367                 case EV_LINK_ACTION_TYPE_LAUNCH:
1368                 case EV_LINK_ACTION_TYPE_NAMED:
1369                         g_signal_emit (view, signals[SIGNAL_EXTERNAL_LINK], 0, action);
1370                         break;
1371         }
1372 }
1373
1374 static gchar *
1375 page_label_from_dest (EvView *view, EvLinkDest *dest)
1376 {
1377         EvLinkDestType type;
1378         gchar *msg = NULL;
1379
1380         type = ev_link_dest_get_dest_type (dest);
1381
1382         switch (type) {
1383                 case EV_LINK_DEST_TYPE_NAMED: {
1384                         EvLinkDest  *dest2;
1385                         const gchar *named_dest;
1386
1387                         named_dest = ev_link_dest_get_named_dest (dest);
1388                         dest2 = ev_document_links_find_link_dest (EV_DOCUMENT_LINKS (view->document),
1389                                                                   named_dest);
1390                         if (dest2) {
1391                                 msg = ev_page_cache_get_page_label (view->page_cache,
1392                                                                     ev_link_dest_get_page (dest2));
1393                                 g_object_unref (dest2);
1394                         }
1395                 }
1396
1397                         break;
1398                 default:
1399                         msg = ev_page_cache_get_page_label (view->page_cache,
1400                                                             ev_link_dest_get_page (dest));
1401         }
1402
1403         return msg;
1404 }
1405
1406 static char *
1407 tip_from_action_named (EvLinkAction *action)
1408 {
1409         const gchar *name = ev_link_action_get_name (action);
1410
1411         if (g_ascii_strcasecmp (name, "FirstPage") == 0) {
1412                 return g_strdup (_("Go to first page"));
1413         } else if (g_ascii_strcasecmp (name, "PrevPage") == 0) {
1414                 return g_strdup (_("Go to previous page"));
1415         } else if (g_ascii_strcasecmp (name, "NextPage") == 0) {
1416                 return g_strdup (_("Go to next page"));
1417         } else if (g_ascii_strcasecmp (name, "LastPage") == 0) {
1418                 return g_strdup (_("Go to last page"));
1419         } else if (g_ascii_strcasecmp (name, "GoToPage") == 0) {
1420                 return g_strdup (_("Go to page"));
1421         } else if (g_ascii_strcasecmp (name, "Find") == 0) {
1422                 return g_strdup (_("Find"));
1423         }
1424
1425         return NULL;
1426 }
1427
1428 static char *
1429 tip_from_link (EvView *view, EvLink *link)
1430 {
1431         EvLinkAction *action;
1432         EvLinkActionType type;
1433         char *msg = NULL;
1434         char *page_label;
1435         const char *title;
1436
1437         action = ev_link_get_action (link);
1438         title = ev_link_get_title (link);
1439
1440         if (!action)
1441                 return title ? g_strdup (title) : NULL;
1442
1443         type = ev_link_action_get_action_type (action);
1444
1445         switch (type) {
1446                 case EV_LINK_ACTION_TYPE_GOTO_DEST:
1447                         page_label = page_label_from_dest (view,
1448                                                            ev_link_action_get_dest (action));
1449                         msg = g_strdup_printf (_("Go to page %s"), page_label);
1450                         g_free (page_label);
1451                         break;
1452                 case EV_LINK_ACTION_TYPE_GOTO_REMOTE:
1453                         if (title) {
1454                                 msg = g_strdup_printf (_("Go to %s on file “%s”"), title,
1455                                                        ev_link_action_get_filename (action));
1456                         } else {
1457                                 msg = g_strdup_printf (_("Go to file “%s”"),
1458                                                        ev_link_action_get_filename (action));
1459                         }
1460
1461                         break;
1462                 case EV_LINK_ACTION_TYPE_EXTERNAL_URI:
1463                         msg = g_strdup (ev_link_action_get_uri (action));
1464                         break;
1465                 case EV_LINK_ACTION_TYPE_LAUNCH:
1466                         msg = g_strdup_printf (_("Launch %s"),
1467                                                ev_link_action_get_filename (action));
1468                         break;
1469                 case EV_LINK_ACTION_TYPE_NAMED:
1470                         msg = tip_from_action_named (action);
1471                         break;
1472                 default:
1473                         if (title)
1474                                 msg = g_strdup (title);
1475                         break;
1476         }
1477
1478         return msg;
1479 }
1480
1481 static void
1482 handle_link_over_xy (EvView *view, gint x, gint y)
1483 {
1484         EvLink *link;
1485
1486         link = ev_view_get_link_at_location (view, x, y);
1487
1488         if (view->link_tooltip == NULL) {
1489                 view->link_tooltip = ev_tooltip_new (GTK_WIDGET (view));
1490         }
1491
1492         if (view->hovered_link != link) {
1493                 view->hovered_link = link;
1494                 ev_tooltip_deactivate (EV_TOOLTIP (view->link_tooltip));
1495         }
1496
1497         if (link) {
1498                 char *msg = tip_from_link (view, link);
1499
1500                 if (msg && g_utf8_validate (msg, -1, NULL)) {
1501                         EvTooltip *tooltip = EV_TOOLTIP (view->link_tooltip);
1502
1503                         ev_tooltip_set_position (tooltip, x, y);
1504                         ev_tooltip_set_text (tooltip, msg);
1505                         ev_tooltip_activate (tooltip);
1506                 }
1507                 g_free (msg);
1508
1509                 ev_view_set_cursor (view, EV_VIEW_CURSOR_LINK);
1510         } else if (location_in_text (view, x + view->scroll_x, y + view->scroll_y)) {
1511                 ev_view_set_cursor (view, EV_VIEW_CURSOR_IBEAM);
1512         } else {
1513                 ev_view_set_status (view, NULL);
1514                 if (view->cursor == EV_VIEW_CURSOR_LINK ||
1515                     view->cursor == EV_VIEW_CURSOR_IBEAM)
1516                         ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
1517         }
1518         return;
1519 }
1520
1521 /*** Images ***/
1522 static EvImage *
1523 ev_view_get_image_at_location (EvView  *view,
1524                                gdouble  x,
1525                                gdouble  y)
1526 {
1527         gint page = -1;
1528         gint x_offset = 0, y_offset = 0;
1529         gint x_new = 0, y_new = 0;
1530         GList *image_mapping;
1531
1532         if (!EV_IS_DOCUMENT_IMAGES (view->document))
1533                 return NULL;
1534
1535         x += view->scroll_x;
1536         y += view->scroll_y;
1537
1538         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1539
1540         if (page == -1)
1541                 return NULL;
1542
1543         if (get_doc_point_from_offset (view, page, x_offset,
1544                                        y_offset, &x_new, &y_new) == FALSE)
1545                 return NULL;
1546
1547         image_mapping = ev_pixbuf_cache_get_image_mapping (view->pixbuf_cache, page);
1548
1549         if (image_mapping)
1550                 return ev_image_mapping_find (image_mapping, x_new, y_new);
1551         else
1552                 return NULL;
1553 }
1554
1555 /*** GtkWidget implementation ***/
1556
1557 static void
1558 ev_view_size_request_continuous_dual_page (EvView         *view,
1559                                            GtkRequisition *requisition)
1560 {
1561         int max_width;
1562         gint n_pages;
1563         GtkBorder border;
1564
1565         ev_page_cache_get_max_width (view->page_cache, view->rotation,
1566                                      view->scale, &max_width);
1567         compute_border (view, max_width, max_width, &border);
1568
1569         n_pages = ev_page_cache_get_n_pages (view->page_cache) + 1;
1570
1571         requisition->width = (max_width + border.left + border.right) * 2 + (view->spacing * 3);
1572         get_page_y_offset (view, n_pages, view->scale, &requisition->height);
1573
1574         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
1575                 requisition->width = 1;
1576         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
1577                 requisition->width = 1;
1578                 /* FIXME: This could actually be set on one page docs or docs
1579                  * with a strange aspect ratio. */
1580                 /* requisition->height = 1;*/
1581         }
1582 }
1583
1584 static void
1585 ev_view_size_request_continuous (EvView         *view,
1586                                  GtkRequisition *requisition)
1587 {
1588         int max_width;
1589         int n_pages;
1590         GtkBorder border;
1591
1592
1593         ev_page_cache_get_max_width (view->page_cache, view->rotation,
1594                                      view->scale, &max_width);
1595         n_pages = ev_page_cache_get_n_pages (view->page_cache);
1596         compute_border (view, max_width, max_width, &border);
1597
1598         requisition->width = max_width + (view->spacing * 2) + border.left + border.right;
1599         get_page_y_offset (view, n_pages, view->scale, &requisition->height);
1600
1601         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
1602                 requisition->width = 1;
1603         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
1604                 requisition->width = 1;
1605                 /* FIXME: This could actually be set on one page docs or docs
1606                  * with a strange aspect ratio. */
1607                 /* requisition->height = 1;*/
1608         }
1609 }
1610
1611 static void
1612 ev_view_size_request_dual_page (EvView         *view,
1613                                 GtkRequisition *requisition)
1614 {
1615         GtkBorder border;
1616         gint width, height;
1617
1618         /* Find the largest of the two. */
1619         ev_page_cache_get_size (view->page_cache,
1620                                 view->current_page,
1621                                 view->rotation,
1622                                 view->scale,
1623                                 &width, &height);
1624         if (view->current_page + 1 < ev_page_cache_get_n_pages (view->page_cache)) {
1625                 gint width_2, height_2;
1626                 ev_page_cache_get_size (view->page_cache,
1627                                         view->current_page + 1,
1628                                         view->rotation,
1629                                         view->scale,
1630                                         &width_2, &height_2);
1631                 if (width_2 > width) {
1632                         width = width_2;
1633                         height = height_2;
1634                 }
1635         }
1636         compute_border (view, width, height, &border);
1637
1638         requisition->width = ((width + border.left + border.right) * 2) +
1639                 (view->spacing * 3);
1640         requisition->height = (height + border.top + border.bottom) +
1641                 (view->spacing * 2);
1642
1643         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
1644                 requisition->width = 1;
1645         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
1646                 requisition->width = 1;
1647                 requisition->height = 1;
1648         }
1649 }
1650
1651 static void
1652 ev_view_size_request_single_page (EvView         *view,
1653                                   GtkRequisition *requisition)
1654 {
1655         GtkBorder border;
1656         gint width, height;
1657
1658         ev_page_cache_get_size (view->page_cache,
1659                                 view->current_page,
1660                                 view->rotation,
1661                                 view->scale,
1662                                 &width, &height);
1663         compute_border (view, width, height, &border);
1664
1665         requisition->width = width + border.left + border.right + (2 * view->spacing);
1666         requisition->height = height + border.top + border.bottom + (2 * view->spacing);
1667
1668         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
1669                 requisition->width = 1;
1670                 requisition->height = height + border.top + border.bottom + (2 * view->spacing);
1671         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
1672                 requisition->width = 1;
1673                 requisition->height = 1;
1674         }
1675 }
1676
1677 static void
1678 ev_view_size_request (GtkWidget      *widget,
1679                       GtkRequisition *requisition)
1680 {
1681         EvView *view = EV_VIEW (widget);
1682
1683         if (view->document == NULL) {
1684                 requisition->width = 1;
1685                 requisition->height = 1;
1686                 return;
1687         }
1688
1689         if (view->presentation) {
1690                 requisition->width = 1;
1691                 requisition->height = 1;
1692                 return;
1693         }
1694
1695         if (view->continuous && view->dual_page)
1696                 ev_view_size_request_continuous_dual_page (view, requisition);
1697         else if (view->continuous)
1698                 ev_view_size_request_continuous (view, requisition);
1699         else if (view->dual_page)
1700                 ev_view_size_request_dual_page (view, requisition);
1701         else
1702                 ev_view_size_request_single_page (view, requisition);
1703 }
1704
1705 static void
1706 ev_view_size_allocate (GtkWidget      *widget,
1707                        GtkAllocation  *allocation)
1708 {
1709         EvView *view = EV_VIEW (widget);
1710
1711         if (view->sizing_mode == EV_SIZING_FIT_WIDTH ||
1712             view->sizing_mode == EV_SIZING_BEST_FIT) {
1713
1714                 g_signal_emit (view, signals[SIGNAL_ZOOM_INVALID], 0);
1715
1716                 ev_view_size_request (widget, &widget->requisition);
1717         }
1718
1719         view_set_adjustment_values (view, GTK_ORIENTATION_HORIZONTAL);
1720         view_set_adjustment_values (view, GTK_ORIENTATION_VERTICAL);
1721
1722         if (view->document)
1723                 view_update_range_and_current_page (view);
1724
1725         view->pending_scroll = SCROLL_TO_KEEP_POSITION;
1726         view->pending_resize = FALSE;
1727
1728         GTK_WIDGET_CLASS (ev_view_parent_class)->size_allocate (widget, allocation);
1729 }
1730
1731 static void
1732 ev_view_realize (GtkWidget *widget)
1733 {
1734         EvView *view = EV_VIEW (widget);
1735         GdkWindowAttr attributes;
1736
1737         GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
1738
1739         attributes.window_type = GDK_WINDOW_CHILD;
1740         attributes.wclass = GDK_INPUT_OUTPUT;
1741         attributes.visual = gtk_widget_get_visual (widget);
1742         attributes.colormap = gtk_widget_get_colormap (widget);
1743
1744         attributes.x = widget->allocation.x;
1745         attributes.y = widget->allocation.y;
1746         attributes.width = widget->allocation.width;
1747         attributes.height = widget->allocation.height;
1748         attributes.event_mask = GDK_EXPOSURE_MASK |
1749                                 GDK_BUTTON_PRESS_MASK |
1750                                 GDK_BUTTON_RELEASE_MASK |
1751                                 GDK_SCROLL_MASK |
1752                                 GDK_KEY_PRESS_MASK |
1753                                 GDK_POINTER_MOTION_MASK |
1754                                 GDK_POINTER_MOTION_HINT_MASK |
1755                                 GDK_ENTER_NOTIFY_MASK |
1756                                 GDK_LEAVE_NOTIFY_MASK;
1757
1758         widget->window = gdk_window_new (gtk_widget_get_parent_window (widget),
1759                                          &attributes,
1760                                          GDK_WA_X | GDK_WA_Y |
1761                                          GDK_WA_COLORMAP |
1762                                          GDK_WA_VISUAL);
1763         gdk_window_set_user_data (widget->window, widget);
1764         widget->style = gtk_style_attach (widget->style, widget->window);
1765
1766         if (view->presentation)
1767                 gdk_window_set_background (widget->window, &widget->style->black);
1768         else
1769                 gdk_window_set_background (widget->window, &widget->style->mid [GTK_STATE_NORMAL]);
1770 }
1771
1772 static gboolean
1773 ev_view_scroll_event (GtkWidget *widget, GdkEventScroll *event)
1774 {
1775         EvView *view = EV_VIEW (widget);
1776         guint state;
1777
1778         state = event->state & gtk_accelerator_get_default_mod_mask ();
1779
1780         if (state == GDK_CONTROL_MASK && view->presentation == FALSE) {
1781                 ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1782
1783                 if (event->direction == GDK_SCROLL_UP ||
1784                     event->direction == GDK_SCROLL_LEFT) {
1785                         if (ev_view_can_zoom_in (view)) {
1786                                 ev_view_zoom_in (view);
1787                         }
1788                 } else {
1789                         if (ev_view_can_zoom_out (view)) {
1790                                 ev_view_zoom_out (view);
1791                         }
1792                 }
1793
1794                 return TRUE;
1795         }
1796
1797         view->jump_to_find_result = FALSE;
1798         /* Shift+Wheel scrolls the in the perpendicular direction */
1799         if (state & GDK_SHIFT_MASK) {
1800                 if (event->direction == GDK_SCROLL_UP)
1801                         event->direction = GDK_SCROLL_LEFT;
1802                 if (event->direction == GDK_SCROLL_LEFT)
1803                         event->direction = GDK_SCROLL_UP;
1804                 if (event->direction == GDK_SCROLL_DOWN)
1805                         event->direction = GDK_SCROLL_RIGHT;
1806                 if (event->direction == GDK_SCROLL_RIGHT)
1807                         event->direction = GDK_SCROLL_DOWN;
1808
1809                 event->state &= ~GDK_SHIFT_MASK;
1810                 state &= ~GDK_SHIFT_MASK;
1811         }
1812
1813         if (state == 0 && view->presentation) {
1814                 switch (event->direction) {
1815                         case GDK_SCROLL_DOWN:
1816                         case GDK_SCROLL_RIGHT:
1817                                 ev_view_next_page (view);
1818                                 break;
1819                         case GDK_SCROLL_UP:
1820                         case GDK_SCROLL_LEFT:
1821                                 ev_view_previous_page (view);
1822                                 break;
1823                 }
1824
1825                 return TRUE;
1826         }
1827
1828         return FALSE;
1829 }
1830
1831 static EvViewSelection *
1832 find_selection_for_page (EvView *view,
1833                          gint    page)
1834 {
1835         GList *list;
1836
1837         for (list = view->selection_info.selections; list != NULL; list = list->next) {
1838                 EvViewSelection *selection;
1839
1840                 selection = (EvViewSelection *) list->data;
1841
1842                 if (selection->page == page)
1843                         return selection;
1844         }
1845
1846         return NULL;
1847 }
1848
1849 static void
1850 draw_end_presentation_page (EvView       *view,
1851                             GdkRectangle *page_area)
1852 {
1853         PangoLayout *layout;
1854         PangoFontDescription *font_desc;
1855         gchar *markup;
1856         const gchar *text = _("End of presentation. Press Escape to exit.");
1857
1858         if (view->presentation_state != EV_PRESENTATION_END)
1859                 return;
1860
1861         layout = gtk_widget_create_pango_layout (GTK_WIDGET (view), NULL);
1862         markup = g_strdup_printf ("<span foreground=\"white\">%s</span>", text);
1863         pango_layout_set_markup (layout, markup, -1);
1864         g_free (markup);
1865
1866         font_desc = pango_font_description_new ();
1867         pango_font_description_set_size (font_desc, 16 * PANGO_SCALE);
1868         pango_layout_set_font_description (layout, font_desc);
1869
1870         gtk_paint_layout (GTK_WIDGET (view)->style,
1871                           GTK_WIDGET (view)->window,
1872                           GTK_WIDGET_STATE (view),
1873                           FALSE,
1874                           page_area,
1875                           GTK_WIDGET (view),
1876                           NULL,
1877                           page_area->x + 15,
1878                           page_area->y + 15,
1879                           layout);
1880
1881         pango_font_description_free (font_desc);
1882         g_object_unref (layout);
1883 }
1884
1885 static gboolean
1886 ev_view_expose_event (GtkWidget      *widget,
1887                       GdkEventExpose *event)
1888 {
1889         EvView *view = EV_VIEW (widget);
1890         int i;
1891
1892         if (view->presentation) {
1893                 switch (view->presentation_state) {
1894                         case EV_PRESENTATION_END: {
1895                                 GdkRectangle area = {0};
1896
1897                                 area.width = widget->allocation.width;
1898                                 area.height = widget->allocation.height;
1899
1900                                 draw_end_presentation_page (view, &area);
1901                         }
1902                                 return FALSE;
1903                         case EV_PRESENTATION_BLACK:
1904                         case EV_PRESENTATION_WHITE:
1905                                 return FALSE;
1906                         case EV_PRESENTATION_NORMAL:
1907                         default:
1908                                 break;
1909                 }
1910         }
1911
1912         if (view->loading) {
1913                 GdkRectangle area = {0};
1914
1915                 area.width = widget->allocation.width;
1916                 area.height = widget->allocation.height;
1917
1918                 draw_loading_text (view,
1919                                    &area,
1920                                    &(event->area));
1921         }
1922
1923         if (view->document == NULL)
1924                 return FALSE;
1925
1926         for (i = view->start_page; i <= view->end_page; i++) {
1927                 GdkRectangle page_area;
1928                 GtkBorder border;
1929                 gboolean page_ready = TRUE;
1930
1931                 if (!get_page_extents (view, i, &page_area, &border))
1932                         continue;
1933
1934                 page_area.x -= view->scroll_x;
1935                 page_area.y -= view->scroll_y;
1936
1937                 draw_one_page (view, i, &page_area, &border, &(event->area), &page_ready);
1938
1939                 if (page_ready && EV_IS_DOCUMENT_FIND (view->document))
1940                         highlight_find_results (view, i);
1941         }
1942
1943         return FALSE;
1944 }
1945
1946 static gboolean
1947 ev_view_do_popup_menu (EvView *view,
1948                        gdouble x,
1949                        gdouble y)
1950 {
1951         EvLink  *link;
1952         EvImage *image;
1953
1954         image = ev_view_get_image_at_location (view, x, y);
1955         if (image) {
1956                 g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, image);
1957                 return TRUE;
1958         }
1959
1960         link = ev_view_get_link_at_location (view, x, y);
1961         if (link) {
1962                 g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, link);
1963                 return TRUE;
1964         }
1965
1966         g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, NULL);
1967
1968         return TRUE;
1969 }
1970
1971 static gboolean
1972 ev_view_popup_menu (GtkWidget *widget)
1973 {
1974         gint x, y;
1975
1976         gtk_widget_get_pointer (widget, &x, &y);
1977         return ev_view_do_popup_menu (EV_VIEW (widget), x, y);
1978 }
1979
1980 static gboolean
1981 ev_view_button_press_event (GtkWidget      *widget,
1982                             GdkEventButton *event)
1983 {
1984         EvView *view = EV_VIEW (widget);
1985
1986         if (!GTK_WIDGET_HAS_FOCUS (widget)) {
1987                 gtk_widget_grab_focus (widget);
1988         }
1989
1990         view->pressed_button = event->button;
1991         view->selection_info.in_drag = FALSE;
1992
1993         switch (event->button) {
1994                 case 1: {
1995                         EvImage *image;
1996
1997                         if (view->selection_info.selections) {
1998                                 if (location_in_selected_text (view,
1999                                                                event->x + view->scroll_x,
2000                                                                event->y + view->scroll_y)) {
2001                                         view->selection_info.in_drag = TRUE;
2002                                 } else {
2003                                         clear_selection (view);
2004                                 }
2005
2006                                 gtk_widget_queue_draw (widget);
2007                         } else if ((image = ev_view_get_image_at_location (view, event->x, event->y))) {
2008                                 if (view->image_dnd_info.image)
2009                                         g_object_unref (view->image_dnd_info.image);
2010                                 view->image_dnd_info.image = g_object_ref (image);
2011                                 view->image_dnd_info.in_drag = TRUE;
2012
2013                                 view->image_dnd_info.start.x = event->x + view->scroll_x;
2014                                 view->image_dnd_info.start.y = event->y + view->scroll_y;
2015                         }
2016
2017                         view->selection_info.start.x = event->x + view->scroll_x;
2018                         view->selection_info.start.y = event->y + view->scroll_y;
2019                 }
2020                         return TRUE;
2021                 case 2:
2022                         /* use root coordinates as reference point because
2023                          * scrolling changes window relative coordinates */
2024                         view->drag_info.start.x = event->x_root;
2025                         view->drag_info.start.y = event->y_root;
2026                         view->drag_info.hadj = gtk_adjustment_get_value (view->hadjustment);
2027                         view->drag_info.vadj = gtk_adjustment_get_value (view->vadjustment);
2028
2029                         ev_view_set_cursor (view, EV_VIEW_CURSOR_DRAG);
2030
2031                         return TRUE;
2032                 case 3:
2033                         return ev_view_do_popup_menu (view, event->x, event->y);
2034         }
2035
2036         return FALSE;
2037 }
2038
2039 /*** Drag and Drop ***/
2040 static void
2041 ev_view_drag_data_get (GtkWidget        *widget,
2042                        GdkDragContext   *context,
2043                        GtkSelectionData *selection_data,
2044                        guint             info,
2045                        guint             time)
2046 {
2047         EvView *view = EV_VIEW (widget);
2048
2049         switch (info) {
2050                 case TARGET_DND_TEXT:
2051                         if (view->selection_info.selections &&
2052                             ev_document_can_get_text (view->document)) {
2053                                 gchar *text;
2054
2055                                 text = get_selected_text (view);
2056
2057                                 gtk_selection_data_set_text (selection_data,
2058                                                              text,
2059                                                              strlen (text));
2060
2061                                 g_free (text);
2062                         }
2063                         break;
2064                 case TARGET_DND_IMAGE:
2065                         if (view->image_dnd_info.image) {
2066                                 GdkPixbuf *pixbuf;
2067
2068                                 pixbuf = ev_image_get_pixbuf (view->image_dnd_info.image);
2069                                 gtk_selection_data_set_pixbuf (selection_data, pixbuf);
2070                         }
2071                         break;
2072                 case TARGET_DND_URI:
2073                         if (view->image_dnd_info.image) {
2074                                 const gchar *tmp_uri;
2075                                 gchar      **uris;
2076
2077                                 tmp_uri = ev_image_save_tmp (view->image_dnd_info.image);
2078
2079                                 uris = g_new0 (gchar *, 2);
2080                                 uris[0] = (gchar *)tmp_uri;
2081
2082                                 gtk_selection_data_set_uris (selection_data, uris);
2083
2084                                 /* g_free instead of g_strfreev since tmp_uri is const */
2085                                 g_free (uris);
2086                         }
2087         }
2088 }
2089
2090 static gboolean
2091 ev_view_drag_motion (GtkWidget      *widget,
2092                      GdkDragContext *context,
2093                      gint            x,
2094                      gint            y,
2095                      guint           time)
2096 {
2097         if (gtk_drag_get_source_widget (context) == widget)
2098                 gdk_drag_status (context, 0, time);
2099         else
2100                 gdk_drag_status (context, context->suggested_action, time);
2101
2102         return TRUE;
2103 }
2104
2105 static void
2106 ev_view_drag_data_received (GtkWidget          *widget,
2107                             GdkDragContext     *context,
2108                             gint                x,
2109                             gint                y,
2110                             GtkSelectionData   *selection_data,
2111                             guint               info,
2112                             guint               time)
2113 {
2114         gchar  **uris;
2115         gint     i = 0;
2116         GSList  *uri_list = NULL;
2117
2118         uris = gtk_selection_data_get_uris (selection_data);
2119         if (!uris) {
2120                 gtk_drag_finish (context, FALSE, FALSE, time);
2121                 return;
2122         }
2123
2124         for (i = 0; uris[i]; i++) {
2125                 uri_list = g_slist_prepend (uri_list, (gpointer) uris[i]);
2126         }
2127
2128         ev_application_open_uri_list (EV_APP, uri_list,
2129                                       gtk_widget_get_screen (widget),
2130                                       0);
2131         gtk_drag_finish (context, TRUE, FALSE, time);
2132
2133         g_strfreev (uris);
2134         g_slist_free (uri_list);
2135 }
2136
2137
2138 static gboolean
2139 selection_update_idle_cb (EvView *view)
2140 {
2141         compute_selections (view, &view->selection_info.start, &view->motion);
2142         view->selection_update_id = 0;
2143         return FALSE;
2144 }
2145
2146 static gboolean
2147 selection_scroll_timeout_cb (EvView *view)
2148 {
2149         gint x, y, shift = 0;
2150         GtkWidget *widget = GTK_WIDGET (view);
2151
2152         gtk_widget_get_pointer (widget, &x, &y);
2153
2154         if (y > widget->allocation.height) {
2155                 shift = (y - widget->allocation.height) / 2;
2156         } else if (y < 0) {
2157                 shift = y / 2;
2158         }
2159
2160         if (shift)
2161                 gtk_adjustment_set_value (view->vadjustment,
2162                                           CLAMP (view->vadjustment->value + shift,
2163                                           view->vadjustment->lower,
2164                                           view->vadjustment->upper -
2165                                           view->vadjustment->page_size));
2166
2167         if (x > widget->allocation.width) {
2168                 shift = (x - widget->allocation.width) / 2;
2169         } else if (x < 0) {
2170                 shift = x / 2;
2171         }
2172
2173         if (shift)
2174                 gtk_adjustment_set_value (view->hadjustment,
2175                                           CLAMP (view->hadjustment->value + shift,
2176                                           view->hadjustment->lower,
2177                                           view->hadjustment->upper -
2178                                           view->hadjustment->page_size));
2179
2180         return TRUE;
2181 }
2182
2183 static gboolean
2184 ev_view_motion_notify_event (GtkWidget      *widget,
2185                              GdkEventMotion *event)
2186 {
2187         EvView *view = EV_VIEW (widget);
2188         gint x, y;
2189
2190         if (!view->document)
2191                 return FALSE;
2192
2193         if (event->is_hint || event->window != widget->window) {
2194             gtk_widget_get_pointer (widget, &x, &y);
2195         } else {
2196             x = event->x;
2197             y = event->y;
2198         }
2199
2200         if (view->selection_info.in_drag) {
2201                 if (gtk_drag_check_threshold (widget,
2202                                               view->selection_info.start.x,
2203                                               view->selection_info.start.y,
2204                                               x, y)) {
2205                         GtkTargetList *target_list = gtk_target_list_new (NULL, 0);
2206
2207                         gtk_target_list_add_text_targets (target_list, TARGET_DND_TEXT);
2208
2209                         gtk_drag_begin (widget, target_list,
2210                                         GDK_ACTION_COPY,
2211                                         1, (GdkEvent *)event);
2212
2213                         view->selection_info.in_drag = FALSE;
2214
2215                         gtk_target_list_unref (target_list);
2216
2217                         return TRUE;
2218                 }
2219         } else if (view->image_dnd_info.in_drag) {
2220                 if (gtk_drag_check_threshold (widget,
2221                                               view->selection_info.start.x,
2222                                               view->selection_info.start.y,
2223                                               x, y)) {
2224                         GtkTargetList *target_list = gtk_target_list_new (NULL, 0);
2225
2226                         gtk_target_list_add_uri_targets (target_list, TARGET_DND_URI);
2227                         gtk_target_list_add_image_targets (target_list, TARGET_DND_IMAGE, TRUE);
2228
2229                         gtk_drag_begin (widget, target_list,
2230                                         GDK_ACTION_COPY,
2231                                         1, (GdkEvent *)event);
2232
2233                         view->image_dnd_info.in_drag = FALSE;
2234
2235                         gtk_target_list_unref (target_list);
2236
2237                         return TRUE;
2238                 }
2239         }
2240
2241         /* For the Evince 0.4.x release, we limit selection to un-rotated
2242          * documents only.
2243          */
2244         if (view->pressed_button == 1 && view->rotation == 0) {
2245
2246                 /* Schedule timeout to scroll during selection and additionally
2247                  * scroll once to allow arbitrary speed. */
2248                 if (!view->selection_scroll_id)
2249                     view->selection_scroll_id = g_timeout_add (SCROLL_TIME, (GSourceFunc)selection_scroll_timeout_cb, view);
2250                 else
2251                     selection_scroll_timeout_cb (view);
2252
2253                 view->selection_info.in_selection = TRUE;
2254                 view->motion.x = x + view->scroll_x;
2255                 view->motion.y = y + view->scroll_y;
2256
2257                 /* Queue an idle to handle the motion.  We do this because
2258                  * handling any selection events in the motion could be slower
2259                  * than new motion events reach us.  We always put it in the
2260                  * idle to make sure we catch up and don't visibly lag the
2261                  * mouse. */
2262                 if (!view->selection_update_id)
2263                         view->selection_update_id = g_idle_add ((GSourceFunc)selection_update_idle_cb, view);
2264
2265                 return TRUE;
2266         } else if (view->pressed_button == 2) {
2267                 if (!view->drag_info.in_drag) {
2268                         gboolean start;
2269
2270                         start = gtk_drag_check_threshold (widget,
2271                                                           view->drag_info.start.x,
2272                                                           view->drag_info.start.y,
2273                                                           event->x_root,
2274                                                           event->y_root);
2275                         view->drag_info.in_drag = start;
2276                 }
2277
2278                 if (view->drag_info.in_drag) {
2279                         int dx, dy;
2280                         gdouble dhadj_value, dvadj_value;
2281
2282                         dx = event->x_root - view->drag_info.start.x;
2283                         dy = event->y_root - view->drag_info.start.y;
2284
2285                         dhadj_value = view->hadjustment->page_size *
2286                                       (gdouble)dx / widget->allocation.width;
2287                         dvadj_value = view->vadjustment->page_size *
2288                                       (gdouble)dy / widget->allocation.height;
2289
2290                         /* clamp scrolling to visible area */
2291                         gtk_adjustment_set_value (view->hadjustment,
2292                                                   MIN(view->drag_info.hadj - dhadj_value,
2293                                                       view->hadjustment->upper -
2294                                                       view->hadjustment->page_size));
2295                         gtk_adjustment_set_value (view->vadjustment,
2296                                                   MIN(view->drag_info.vadj - dvadj_value,
2297                                                       view->vadjustment->upper -
2298                                                       view->vadjustment->page_size));
2299
2300                         return TRUE;
2301                 }
2302         } else if (view->pressed_button <= 0) {
2303                 handle_link_over_xy (view, x, y);
2304                 return TRUE;
2305         }
2306
2307         return FALSE;
2308 }
2309
2310 static gboolean
2311 ev_view_button_release_event (GtkWidget      *widget,
2312                               GdkEventButton *event)
2313 {
2314         EvView *view = EV_VIEW (widget);
2315         EvLink *link;
2316
2317         if (view->pressed_button == 2) {
2318                 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
2319         }
2320
2321         if (view->document && view->pressed_button == 1) {
2322                 link = ev_view_get_link_at_location (view, event->x, event->y);
2323         } else {
2324                 link = NULL;
2325         }
2326
2327         view->pressed_button = -1;
2328         view->drag_info.in_drag = FALSE;
2329         view->image_dnd_info.in_drag = FALSE;
2330
2331         if (view->selection_scroll_id) {
2332             g_source_remove (view->selection_scroll_id);
2333             view->selection_scroll_id = 0;
2334         }
2335         if (view->selection_update_id) {
2336             g_source_remove (view->selection_update_id);
2337             view->selection_update_id = 0;
2338         }
2339
2340         if (view->selection_info.selections) {
2341                 ev_view_update_primary_selection (view);
2342
2343                 if (view->selection_info.in_drag) {
2344                         clear_selection (view);
2345                         gtk_widget_queue_draw (widget);
2346                 }
2347
2348                 view->selection_info.in_drag = FALSE;
2349         } else if (link) {
2350                 ev_view_handle_link (view, link);
2351         } else if (view->presentation) {
2352                 switch (event->button) {
2353                         case 1:
2354                                 ev_view_next_page (view);
2355                                 return TRUE;
2356                         case 3:
2357                                 ev_view_previous_page (view);
2358                                 return TRUE;
2359                 }
2360         }
2361
2362         return FALSE;
2363 }
2364
2365 /* Goto Window */
2366 /* Cut and paste from gtkwindow.c */
2367 static void
2368 send_focus_change (GtkWidget *widget,
2369                    gboolean   in)
2370 {
2371         GdkEvent *fevent = gdk_event_new (GDK_FOCUS_CHANGE);
2372
2373         g_object_ref (widget);
2374
2375         if (in)
2376                 GTK_WIDGET_SET_FLAGS (widget, GTK_HAS_FOCUS);
2377         else
2378                 GTK_WIDGET_UNSET_FLAGS (widget, GTK_HAS_FOCUS);
2379
2380         fevent->focus_change.type = GDK_FOCUS_CHANGE;
2381         fevent->focus_change.window = g_object_ref (widget->window);
2382         fevent->focus_change.in = in;
2383
2384         gtk_widget_event (widget, fevent);
2385
2386         g_object_notify (G_OBJECT (widget), "has-focus");
2387
2388         g_object_unref (widget);
2389         gdk_event_free (fevent);
2390 }
2391
2392 static void
2393 ev_view_goto_window_hide (EvView *view)
2394 {
2395         /* send focus-in event */
2396         send_focus_change (view->goto_entry, FALSE);
2397         gtk_widget_hide (view->goto_window);
2398         gtk_entry_set_text (GTK_ENTRY (view->goto_entry), "");
2399 }
2400
2401 static gboolean
2402 ev_view_goto_window_delete_event (GtkWidget   *widget,
2403                                   GdkEventAny *event,
2404                                   EvView      *view)
2405 {
2406         ev_view_goto_window_hide (view);
2407
2408         return TRUE;
2409 }
2410
2411 static gboolean
2412 key_is_numeric (guint keyval)
2413 {
2414         return ((keyval >= GDK_0 && keyval <= GDK_9) ||
2415                 (keyval >= GDK_KP_0 && keyval <= GDK_KP_9));
2416 }
2417
2418 static gboolean
2419 ev_view_goto_window_key_press_event (GtkWidget   *widget,
2420                                      GdkEventKey *event,
2421                                      EvView      *view)
2422 {
2423         switch (event->keyval) {
2424                 case GDK_Escape:
2425                 case GDK_Tab:
2426                 case GDK_KP_Tab:
2427                 case GDK_ISO_Left_Tab:
2428                         ev_view_goto_window_hide (view);
2429                         return TRUE;
2430                 case GDK_Return:
2431                 case GDK_KP_Enter:
2432                 case GDK_ISO_Enter:
2433                         return FALSE;
2434                 default:
2435                         if (!key_is_numeric (event->keyval))
2436                                 return TRUE;
2437         }
2438
2439         return FALSE;
2440 }
2441
2442 static gboolean
2443 ev_view_goto_window_button_press_event (GtkWidget      *widget,
2444                                         GdkEventButton *event,
2445                                         EvView         *view)
2446 {
2447         ev_view_goto_window_hide (view);
2448
2449         return TRUE;
2450 }
2451
2452 static void
2453 ev_view_goto_entry_activate (GtkEntry *entry,
2454                              EvView   *view)
2455 {
2456         const gchar *text;
2457         gint         page;
2458
2459         text = gtk_entry_get_text (entry);
2460         page = atoi (text) - 1;
2461
2462         ev_view_goto_window_hide (view);
2463
2464         if (page >= 0 &&
2465             page < ev_page_cache_get_n_pages (view->page_cache))
2466                 ev_page_cache_set_current_page (view->page_cache, page);
2467 }
2468
2469 static void
2470 ev_view_goto_window_create (EvView *view)
2471 {
2472         GtkWidget *frame, *hbox, *toplevel, *label;
2473
2474         toplevel = gtk_widget_get_toplevel (GTK_WIDGET (view));
2475
2476         if (view->goto_window) {
2477                 if (GTK_WINDOW (toplevel)->group)
2478                         gtk_window_group_add_window (GTK_WINDOW (toplevel)->group,
2479                                                      GTK_WINDOW (view->goto_window));
2480                 else if (GTK_WINDOW (view->goto_window)->group)
2481                         gtk_window_group_remove_window (GTK_WINDOW (view->goto_window)->group,
2482                                                         GTK_WINDOW (view->goto_window));
2483                 return;
2484         }
2485
2486         view->goto_window = gtk_window_new (GTK_WINDOW_POPUP);
2487
2488         if (GTK_WINDOW (toplevel)->group)
2489                 gtk_window_group_add_window (GTK_WINDOW (toplevel)->group,
2490                                              GTK_WINDOW (view->goto_window));
2491
2492         gtk_window_set_modal (GTK_WINDOW (view->goto_window), TRUE);
2493
2494         g_signal_connect (view->goto_window, "delete_event",
2495                           G_CALLBACK (ev_view_goto_window_delete_event),
2496                           view);
2497         g_signal_connect (view->goto_window, "key_press_event",
2498                           G_CALLBACK (ev_view_goto_window_key_press_event),
2499                           view);
2500         g_signal_connect (view->goto_window, "button_press_event",
2501                           G_CALLBACK (ev_view_goto_window_button_press_event),
2502                           view);
2503
2504         frame = gtk_frame_new (NULL);
2505         gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_ETCHED_IN);
2506         gtk_container_add (GTK_CONTAINER (view->goto_window), frame);
2507         gtk_widget_show (frame);
2508
2509         hbox = gtk_hbox_new (FALSE, 0);
2510         gtk_container_set_border_width (GTK_CONTAINER (hbox), 3);
2511         gtk_container_add (GTK_CONTAINER (frame), hbox);
2512         gtk_widget_show (hbox);
2513
2514         label = gtk_label_new(_("Jump to page:"));
2515         gtk_box_pack_start (GTK_BOX (hbox), label, TRUE, TRUE, 3);
2516         gtk_widget_show (label);
2517         gtk_widget_realize (label);
2518
2519         view->goto_entry = gtk_entry_new ();
2520         g_signal_connect (view->goto_entry, "activate",
2521                           G_CALLBACK (ev_view_goto_entry_activate),
2522                           view);
2523         gtk_box_pack_start_defaults (GTK_BOX (hbox), view->goto_entry);
2524         gtk_widget_show (view->goto_entry);
2525         gtk_widget_realize (view->goto_entry);
2526 }
2527
2528 static void
2529 ev_view_goto_entry_grab_focus (EvView *view)
2530 {
2531         GtkWidgetClass *entry_parent_class;
2532
2533         entry_parent_class = g_type_class_peek_parent (GTK_ENTRY_GET_CLASS (view->goto_entry));
2534         (entry_parent_class->grab_focus) (view->goto_entry);
2535
2536         send_focus_change (view->goto_entry, TRUE);
2537 }
2538
2539 static void
2540 ev_view_goto_window_send_key_event (EvView   *view,
2541                                     GdkEvent *event)
2542 {
2543         GdkEventKey *new_event;
2544         GdkScreen   *screen;
2545
2546         /* Move goto window off screen */
2547         screen = gtk_widget_get_screen (GTK_WIDGET (view));
2548         gtk_window_move (GTK_WINDOW (view->goto_window),
2549                          gdk_screen_get_width (screen) + 1,
2550                          gdk_screen_get_height (screen) + 1);
2551         gtk_widget_show (view->goto_window);
2552
2553         new_event = (GdkEventKey *) gdk_event_copy (event);
2554         g_object_unref (new_event->window);
2555         new_event->window = g_object_ref (view->goto_window->window);
2556         gtk_widget_realize (view->goto_window);
2557
2558         gtk_widget_event (view->goto_window, (GdkEvent *)new_event);
2559         gdk_event_free ((GdkEvent *)new_event);
2560         gtk_widget_hide (view->goto_window);
2561 }
2562
2563 static gboolean
2564 ev_view_key_press_event (GtkWidget   *widget,
2565                          GdkEventKey *event)
2566 {
2567         EvView *view = EV_VIEW (widget);
2568         EvPresentationState current;
2569
2570         if (!view->presentation ||
2571             view->presentation_state == EV_PRESENTATION_END)
2572                 return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
2573
2574
2575         current = view->presentation_state;
2576
2577         switch (event->keyval) {
2578                 case GDK_b:
2579                 case GDK_B:
2580                         view->presentation_state =
2581                                 (view->presentation_state == EV_PRESENTATION_BLACK) ?
2582                                 EV_PRESENTATION_NORMAL : EV_PRESENTATION_BLACK;
2583                         break;
2584                 case GDK_w:
2585                 case GDK_W:
2586                         view->presentation_state =
2587                                 (view->presentation_state == EV_PRESENTATION_WHITE) ?
2588                                 EV_PRESENTATION_NORMAL : EV_PRESENTATION_WHITE;
2589                         break;
2590                 default:
2591                         if (view->presentation_state == EV_PRESENTATION_BLACK ||
2592                             view->presentation_state == EV_PRESENTATION_WHITE) {
2593                                 view->presentation_state = EV_PRESENTATION_NORMAL;
2594                         }
2595         }
2596
2597         if (current == view->presentation_state) {
2598                 if (ev_page_cache_get_n_pages (view->page_cache) > 1 &&
2599                     key_is_numeric (event->keyval)) {
2600                         gint x, y;
2601
2602                         ev_view_goto_window_create (view);
2603                         ev_view_goto_window_send_key_event (view, (GdkEvent *)event);
2604                         gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
2605                         gtk_window_move (GTK_WINDOW (view->goto_window), x, y);
2606                         gtk_widget_show (view->goto_window);
2607                         ev_view_goto_entry_grab_focus (view);
2608
2609                         return TRUE;
2610                 }
2611
2612                 return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
2613         }
2614
2615         switch (view->presentation_state) {
2616                 case EV_PRESENTATION_NORMAL:
2617                 case EV_PRESENTATION_BLACK:
2618                         gdk_window_set_background (widget->window,
2619                                                    &widget->style->black);
2620                         break;
2621                 case EV_PRESENTATION_WHITE:
2622                         gdk_window_set_background (widget->window,
2623                                                    &widget->style->white);
2624                         break;
2625                 default:
2626                         return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
2627         }
2628
2629         gtk_widget_queue_draw (widget);
2630         return TRUE;
2631 }
2632
2633 static gint
2634 ev_view_focus_in (GtkWidget     *widget,
2635                   GdkEventFocus *event)
2636 {
2637         if (EV_VIEW (widget)->pixbuf_cache)
2638                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
2639         gtk_widget_queue_draw (widget);
2640
2641         return FALSE;
2642 }
2643
2644 static gint
2645 ev_view_focus_out (GtkWidget     *widget,
2646                      GdkEventFocus *event)
2647 {
2648         if (EV_VIEW (widget)->goto_window)
2649                 ev_view_goto_window_hide (EV_VIEW (widget));
2650
2651         if (EV_VIEW (widget)->pixbuf_cache)
2652                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
2653         gtk_widget_queue_draw (widget);
2654
2655         return FALSE;
2656 }
2657
2658 static gboolean
2659 ev_view_leave_notify_event (GtkWidget *widget, GdkEventCrossing   *event)
2660 {
2661         EvView *view = EV_VIEW (widget);
2662
2663         ev_view_set_status (view, NULL);
2664
2665         if (view->cursor == EV_VIEW_CURSOR_LINK ||
2666             view->cursor == EV_VIEW_CURSOR_IBEAM)
2667                 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
2668
2669         if (view->link_tooltip) {
2670                 view->hovered_link = NULL;
2671                 ev_tooltip_deactivate (EV_TOOLTIP (view->link_tooltip));
2672         }
2673
2674         return FALSE;
2675 }
2676
2677 static gboolean
2678 ev_view_enter_notify_event (GtkWidget *widget, GdkEventCrossing   *event)
2679 {
2680         EvView *view = EV_VIEW (widget);
2681
2682         handle_link_over_xy (view, event->x, event->y);
2683
2684         return FALSE;
2685 }
2686
2687 static void
2688 ev_view_style_set (GtkWidget *widget,
2689                    GtkStyle  *old_style)
2690 {
2691         if (EV_VIEW (widget)->pixbuf_cache)
2692                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
2693
2694         GTK_WIDGET_CLASS (ev_view_parent_class)->style_set (widget, old_style);
2695 }
2696
2697 /*** Drawing ***/
2698
2699 static guint32
2700 ev_gdk_color_to_rgb (const GdkColor *color)
2701 {
2702   guint32 result;
2703   result = (0xff0000 | (color->red & 0xff00));
2704   result <<= 8;
2705   result |= ((color->green & 0xff00) | (color->blue >> 8));
2706   return result;
2707 }
2708
2709 static void
2710 draw_rubberband (GtkWidget *widget, GdkWindow *window,
2711                  const GdkRectangle *rect, guchar alpha)
2712 {
2713         GdkGC *gc;
2714         GdkPixbuf *pixbuf;
2715         GdkColor *fill_color_gdk;
2716         guint fill_color;
2717
2718         fill_color_gdk = gdk_color_copy (&GTK_WIDGET (widget)->style->base[GTK_STATE_SELECTED]);
2719         fill_color = ev_gdk_color_to_rgb (fill_color_gdk) << 8 | alpha;
2720
2721         pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE, 8,
2722                                  rect->width, rect->height);
2723         gdk_pixbuf_fill (pixbuf, fill_color);
2724
2725         gdk_draw_pixbuf (window, NULL, pixbuf,
2726                          0, 0,
2727                          rect->x - EV_VIEW (widget)->scroll_x, rect->y - EV_VIEW (widget)->scroll_y,
2728                          rect->width, rect->height,
2729                          GDK_RGB_DITHER_NONE,
2730                          0, 0);
2731
2732         g_object_unref (pixbuf);
2733
2734         gc = gdk_gc_new (window);
2735         gdk_gc_set_rgb_fg_color (gc, fill_color_gdk);
2736         gdk_draw_rectangle (window, gc, FALSE,
2737                             rect->x - EV_VIEW (widget)->scroll_x, rect->y - EV_VIEW (widget)->scroll_y,
2738                             rect->width - 1,
2739                             rect->height - 1);
2740         g_object_unref (gc);
2741
2742         gdk_color_free (fill_color_gdk);
2743 }
2744
2745
2746 static void
2747 highlight_find_results (EvView *view, int page)
2748 {
2749         EvDocumentFind *find;
2750         int i, results = 0;
2751
2752         g_return_if_fail (EV_IS_DOCUMENT_FIND (view->document));
2753
2754         find = EV_DOCUMENT_FIND (view->document);
2755
2756         results = ev_document_find_get_n_results (find, page);
2757
2758         for (i = 0; i < results; i++) {
2759                 EvRectangle rectangle;
2760                 GdkRectangle view_rectangle;
2761                 guchar alpha;
2762
2763                 if (i == view->find_result && page == view->current_page) {
2764                         alpha = 0x90;
2765                 } else {
2766                         alpha = 0x20;
2767                 }
2768
2769                 ev_document_find_get_result (find, page, i, &rectangle);
2770                 doc_rect_to_view_rect (view, page, &rectangle, &view_rectangle);
2771                 draw_rubberband (GTK_WIDGET (view), GTK_WIDGET(view)->window,
2772                                  &view_rectangle, alpha);
2773         }
2774 }
2775
2776 static void
2777 draw_loading_text (EvView       *view,
2778                    GdkRectangle *page_area,
2779                    GdkRectangle *expose_area)
2780 {
2781         const char *loading_text;
2782         PangoLayout *layout;
2783         PangoFontDescription *font_desc;
2784         PangoRectangle logical_rect;
2785         double real_scale;
2786         int target_width;
2787
2788         /* Don't annoy users with loading messages during presentations.
2789          * FIXME: Temporary "workaround" for
2790          * http://bugzilla.gnome.org/show_bug.cgi?id=320352 */
2791         if (view->presentation)
2792                 return;
2793
2794         loading_text = _("Loading...");
2795
2796         ev_document_fc_mutex_lock ();
2797
2798         layout = gtk_widget_create_pango_layout (GTK_WIDGET (view), loading_text);
2799
2800         font_desc = pango_font_description_new ();
2801
2802
2803         /* We set the font to be 10 points, get the size, and scale appropriately */
2804         pango_font_description_set_size (font_desc, 10 * PANGO_SCALE);
2805         pango_layout_set_font_description (layout, font_desc);
2806         pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
2807
2808         /* Make sure we fit the middle of the page */
2809         target_width = MAX (page_area->width / 2, 1);
2810         real_scale = ((double)target_width / (double) logical_rect.width) * (PANGO_SCALE * 10);
2811         pango_font_description_set_size (font_desc, (int)real_scale);
2812         pango_layout_set_font_description (layout, font_desc);
2813         pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
2814
2815         gtk_paint_layout (GTK_WIDGET (view)->style,
2816                           GTK_WIDGET (view)->window,
2817                           GTK_WIDGET_STATE (view),
2818                           FALSE,
2819                           page_area,
2820                           GTK_WIDGET (view),
2821                           NULL,
2822                           page_area->x + (target_width/2),
2823                           page_area->y + (page_area->height - logical_rect.height) / 2,
2824                           layout);
2825
2826         pango_font_description_free (font_desc);
2827         g_object_unref (layout);
2828
2829         ev_document_fc_mutex_unlock ();
2830 }
2831
2832 static void
2833 draw_one_page (EvView          *view,
2834                gint             page,
2835                GdkRectangle    *page_area,
2836                GtkBorder       *border,
2837                GdkRectangle    *expose_area,
2838                gboolean        *page_ready)
2839 {
2840         gint width, height;
2841         GdkPixbuf *current_pixbuf;
2842         GdkRectangle overlap;
2843         GdkRectangle real_page_area;
2844         EvViewSelection *selection;
2845         gint current_page;
2846
2847         g_assert (view->document);
2848
2849         if (! gdk_rectangle_intersect (page_area, expose_area, &overlap))
2850                 return;
2851
2852         current_page = ev_page_cache_get_current_page (view->page_cache);
2853         selection = find_selection_for_page (view, page);
2854         ev_page_cache_get_size (view->page_cache,
2855                                 page, view->rotation,
2856                                 view->scale,
2857                                 &width, &height);
2858         /* Render the document itself */
2859         real_page_area = *page_area;
2860
2861         real_page_area.x += border->left;
2862         real_page_area.y += border->top;
2863         real_page_area.width -= (border->left + border->right);
2864         real_page_area.height -= (border->top + border->bottom);
2865         *page_ready = TRUE;
2866
2867         ev_document_misc_paint_one_page (GTK_WIDGET(view)->window,
2868                                          GTK_WIDGET (view),
2869                                          page_area, border,
2870                                          page == current_page);
2871
2872         if (gdk_rectangle_intersect (&real_page_area, expose_area, &overlap)) {
2873                 GdkPixbuf *selection_pixbuf = NULL;
2874                 GdkPixbuf *scaled_image;
2875                 GdkPixbuf *scaled_selection;
2876
2877                 current_pixbuf = ev_pixbuf_cache_get_pixbuf (view->pixbuf_cache, page);
2878
2879                 /* Get the selection pixbuf iff we have something to draw */
2880                 if (current_pixbuf && view->selection_mode == EV_VIEW_SELECTION_TEXT && selection)
2881                         selection_pixbuf = ev_pixbuf_cache_get_selection_pixbuf (view->pixbuf_cache,
2882                                                                                  page,
2883                                                                                  view->scale,
2884                                                                                  NULL);
2885
2886                 if (current_pixbuf == NULL)
2887                         scaled_image = NULL;
2888                 else if (width == gdk_pixbuf_get_width (current_pixbuf) &&
2889                          height == gdk_pixbuf_get_height (current_pixbuf))
2890                         scaled_image = g_object_ref (current_pixbuf);
2891                 else
2892                         /* FIXME: We don't want to scale the whole area, just the right
2893                          * area of it */
2894                         scaled_image = gdk_pixbuf_scale_simple (current_pixbuf,
2895                                                                 width, height,
2896                                                                 GDK_INTERP_NEAREST);
2897
2898                 if (selection_pixbuf == NULL)
2899                         scaled_selection = NULL;
2900                 else if (width == gdk_pixbuf_get_width (selection_pixbuf) &&
2901                          height == gdk_pixbuf_get_height (selection_pixbuf))
2902                         scaled_selection = g_object_ref (selection_pixbuf);
2903                 else
2904                         /* FIXME: We don't want to scale the whole area, just the right
2905                          * area of it */
2906                         scaled_selection = gdk_pixbuf_scale_simple (selection_pixbuf,
2907                                                                     width, height,
2908                                                                     GDK_INTERP_NEAREST);
2909
2910                 if (scaled_image) {
2911                         gdk_draw_pixbuf (GTK_WIDGET(view)->window,
2912                                          GTK_WIDGET (view)->style->fg_gc[GTK_STATE_NORMAL],
2913                                          scaled_image,
2914                                          overlap.x - real_page_area.x,
2915                                          overlap.y - real_page_area.y,
2916                                          overlap.x, overlap.y,
2917                                          overlap.width, overlap.height,
2918                                          GDK_RGB_DITHER_NORMAL,
2919                                          0, 0);
2920                         g_object_unref (scaled_image);
2921                 } else {
2922                         draw_loading_text (view,
2923                                            &real_page_area,
2924                                            expose_area);
2925                         *page_ready = FALSE;
2926                 }
2927
2928                 if (scaled_selection) {
2929                         gdk_draw_pixbuf (GTK_WIDGET(view)->window,
2930                                          GTK_WIDGET (view)->style->fg_gc[GTK_STATE_NORMAL],
2931                                          scaled_selection,
2932                                          overlap.x - real_page_area.x,
2933                                          overlap.y - real_page_area.y,
2934                                          overlap.x, overlap.y,
2935                                          overlap.width, overlap.height,
2936                                          GDK_RGB_DITHER_NORMAL,
2937                                          0, 0);
2938                         g_object_unref (scaled_selection);
2939                 }
2940         }
2941 }
2942
2943 /*** GObject functions ***/
2944
2945 static void
2946 ev_view_finalize (GObject *object)
2947 {
2948         EvView *view = EV_VIEW (object);
2949
2950         LOG ("Finalize");
2951
2952         g_free (view->status);
2953         g_free (view->find_status);
2954
2955         clear_selection (view);
2956
2957         if (view->image_dnd_info.image)
2958                 g_object_unref (view->image_dnd_info.image);
2959         view->image_dnd_info.image = NULL;
2960
2961         G_OBJECT_CLASS (ev_view_parent_class)->finalize (object);
2962 }
2963
2964 static void
2965 ev_view_destroy (GtkObject *object)
2966 {
2967         EvView *view = EV_VIEW (object);
2968
2969         if (view->document) {
2970                 g_object_unref (view->document);
2971                 view->document = NULL;
2972         }
2973
2974         if (view->pixbuf_cache) {
2975                 g_object_unref (view->pixbuf_cache);
2976                 view->pixbuf_cache = NULL;
2977         }
2978
2979         if (view->link_tooltip) {
2980                 gtk_widget_destroy (view->link_tooltip);
2981                 view->link_tooltip = NULL;
2982         }
2983
2984         if (view->goto_window) {
2985                 gtk_widget_destroy (view->goto_window);
2986                 view->goto_window = NULL;
2987                 view->goto_entry = NULL;
2988         }
2989
2990         if (view->selection_scroll_id) {
2991             g_source_remove (view->selection_scroll_id);
2992             view->selection_scroll_id = 0;
2993         }
2994
2995         if (view->selection_update_id) {
2996             g_source_remove (view->selection_update_id);
2997             view->selection_update_id = 0;
2998         }
2999
3000         ev_view_presentation_transition_stop (view);
3001
3002         ev_view_set_scroll_adjustments (view, NULL, NULL);
3003
3004         GTK_OBJECT_CLASS (ev_view_parent_class)->destroy (object);
3005 }
3006
3007 static void
3008 ev_view_set_property (GObject      *object,
3009                       guint         prop_id,
3010                       const GValue *value,
3011                       GParamSpec   *pspec)
3012 {
3013         EvView *view = EV_VIEW (object);
3014
3015         switch (prop_id) {
3016                 case PROP_CONTINUOUS:
3017                         ev_view_set_continuous (view, g_value_get_boolean (value));
3018                         break;
3019                 case PROP_DUAL_PAGE:
3020                         ev_view_set_dual_page (view, g_value_get_boolean (value));
3021                         break;
3022                 case PROP_FULLSCREEN:
3023                         ev_view_set_fullscreen (view, g_value_get_boolean (value));
3024                         break;
3025                 case PROP_PRESENTATION:
3026                         ev_view_set_presentation (view, g_value_get_boolean (value));
3027                         break;
3028                 case PROP_SIZING_MODE:
3029                         ev_view_set_sizing_mode (view, g_value_get_enum (value));
3030                         break;
3031                 case PROP_ZOOM:
3032                         ev_view_set_zoom (view, g_value_get_double (value), FALSE);
3033                         break;
3034                 case PROP_ROTATION:
3035                         ev_view_set_rotation (view, g_value_get_int (value));
3036                         break;
3037                 default:
3038                         G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
3039         }
3040 }
3041
3042 static AtkObject *
3043 ev_view_get_accessible (GtkWidget *widget)
3044 {
3045         static gboolean first_time = TRUE;
3046
3047         if (first_time) {
3048                 AtkObjectFactory *factory;
3049                 AtkRegistry *registry;
3050                 GType derived_type;
3051                 GType derived_atk_type;
3052
3053                 /*
3054                  * Figure out whether accessibility is enabled by looking at the
3055                  * type of the accessible object which would be created for
3056                  * the parent type of EvView.
3057                  */
3058                 derived_type = g_type_parent (EV_TYPE_VIEW);
3059
3060                 registry = atk_get_default_registry ();
3061                 factory = atk_registry_get_factory (registry,
3062                                                     derived_type);
3063                 derived_atk_type = atk_object_factory_get_accessible_type (factory);
3064                 if (g_type_is_a (derived_atk_type, GTK_TYPE_ACCESSIBLE))
3065                         atk_registry_set_factory_type (registry,
3066                                                        EV_TYPE_VIEW,
3067                                                        ev_view_accessible_factory_get_type ());
3068                 first_time = FALSE;
3069         }
3070         return GTK_WIDGET_CLASS (ev_view_parent_class)->get_accessible (widget);
3071 }
3072
3073 static void
3074 ev_view_get_property (GObject *object,
3075                       guint prop_id,
3076                       GValue *value,
3077                       GParamSpec *pspec)
3078 {
3079         EvView *view = EV_VIEW (object);
3080
3081         switch (prop_id) {
3082                 case PROP_STATUS:
3083                         g_value_set_string (value, view->status);
3084                         break;
3085                 case PROP_FIND_STATUS:
3086                         g_value_set_string (value, view->status);
3087                         break;
3088                 case PROP_CONTINUOUS:
3089                         g_value_set_boolean (value, view->continuous);
3090                         break;
3091                 case PROP_DUAL_PAGE:
3092                         g_value_set_boolean (value, view->dual_page);
3093                         break;
3094                 case PROP_FULLSCREEN:
3095                         g_value_set_boolean (value, view->fullscreen);
3096                         break;
3097                 case PROP_PRESENTATION:
3098                         g_value_set_boolean (value, view->presentation);
3099                         break;
3100                 case PROP_SIZING_MODE:
3101                         g_value_set_enum (value, view->sizing_mode);
3102                         break;
3103                 case PROP_ZOOM:
3104                         g_value_set_double (value, view->scale);
3105                         break;
3106                 case PROP_ROTATION:
3107                         g_value_set_int (value, view->rotation);
3108                         break;
3109                 case PROP_HAS_SELECTION:
3110                         g_value_set_boolean (value,
3111                                              view->selection_info.selections != NULL);
3112                         break;
3113                 default:
3114                         G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
3115         }
3116 }
3117
3118 static void
3119 ev_view_class_init (EvViewClass *class)
3120 {
3121         GObjectClass *object_class = G_OBJECT_CLASS (class);
3122         GtkObjectClass *gtk_object_class = GTK_OBJECT_CLASS (class);
3123         GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
3124         GtkBindingSet *binding_set;
3125
3126         object_class->finalize = ev_view_finalize;
3127         object_class->set_property = ev_view_set_property;
3128         object_class->get_property = ev_view_get_property;
3129
3130         widget_class->expose_event = ev_view_expose_event;
3131         widget_class->button_press_event = ev_view_button_press_event;
3132         widget_class->motion_notify_event = ev_view_motion_notify_event;
3133         widget_class->button_release_event = ev_view_button_release_event;
3134         widget_class->key_press_event = ev_view_key_press_event;
3135         widget_class->focus_in_event = ev_view_focus_in;
3136         widget_class->focus_out_event = ev_view_focus_out;
3137         widget_class->get_accessible = ev_view_get_accessible;
3138         widget_class->size_request = ev_view_size_request;
3139         widget_class->size_allocate = ev_view_size_allocate;
3140         widget_class->realize = ev_view_realize;
3141         widget_class->scroll_event = ev_view_scroll_event;
3142         widget_class->enter_notify_event = ev_view_enter_notify_event;
3143         widget_class->leave_notify_event = ev_view_leave_notify_event;
3144         widget_class->style_set = ev_view_style_set;
3145         widget_class->drag_data_get = ev_view_drag_data_get;
3146         widget_class->drag_motion = ev_view_drag_motion;
3147         widget_class->drag_data_received = ev_view_drag_data_received;
3148         widget_class->popup_menu = ev_view_popup_menu;
3149         gtk_object_class->destroy = ev_view_destroy;
3150
3151         class->set_scroll_adjustments = ev_view_set_scroll_adjustments;
3152         class->binding_activated = ev_view_scroll;
3153
3154         widget_class->set_scroll_adjustments_signal =
3155             g_signal_new ("set-scroll-adjustments",
3156                           G_OBJECT_CLASS_TYPE (object_class),
3157                           G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
3158                           G_STRUCT_OFFSET (EvViewClass, set_scroll_adjustments),
3159                           NULL, NULL,
3160                           ev_marshal_VOID__OBJECT_OBJECT,
3161                           G_TYPE_NONE, 2,
3162                           GTK_TYPE_ADJUSTMENT,
3163                           GTK_TYPE_ADJUSTMENT);
3164
3165         signals[SIGNAL_BINDING_ACTIVATED] = g_signal_new ("binding_activated",
3166                          G_TYPE_FROM_CLASS (object_class),
3167                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
3168                          G_STRUCT_OFFSET (EvViewClass, binding_activated),
3169                          NULL, NULL,
3170                          ev_marshal_VOID__ENUM_BOOLEAN,
3171                          G_TYPE_NONE, 2,
3172                          GTK_TYPE_SCROLL_TYPE,
3173                          G_TYPE_BOOLEAN);
3174
3175         signals[SIGNAL_ZOOM_INVALID] = g_signal_new ("zoom-invalid",
3176                          G_TYPE_FROM_CLASS (object_class),
3177                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
3178                          G_STRUCT_OFFSET (EvViewClass, zoom_invalid),
3179                          NULL, NULL,
3180                          ev_marshal_VOID__VOID,
3181                          G_TYPE_NONE, 0, G_TYPE_NONE);
3182         signals[SIGNAL_EXTERNAL_LINK] = g_signal_new ("external-link",
3183                          G_TYPE_FROM_CLASS (object_class),
3184                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
3185                          G_STRUCT_OFFSET (EvViewClass, external_link),
3186                          NULL, NULL,
3187                          g_cclosure_marshal_VOID__OBJECT,
3188                          G_TYPE_NONE, 1,
3189                          G_TYPE_OBJECT);
3190         signals[SIGNAL_POPUP_MENU] = g_signal_new ("popup",
3191                          G_TYPE_FROM_CLASS (object_class),
3192                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
3193                          G_STRUCT_OFFSET (EvViewClass, popup_menu),
3194                          NULL, NULL,
3195                          g_cclosure_marshal_VOID__OBJECT,
3196                          G_TYPE_NONE, 1,
3197                          G_TYPE_OBJECT);
3198
3199         g_object_class_install_property (object_class,
3200                                          PROP_STATUS,
3201                                          g_param_spec_string ("status",
3202                                                               "Status Message",
3203                                                               "The status message",
3204                                                               NULL,
3205                                                               G_PARAM_READABLE));
3206
3207         g_object_class_install_property (object_class,
3208                                          PROP_FIND_STATUS,
3209                                          g_param_spec_string ("find-status",
3210                                                               "Find Status Message",
3211                                                               "The find status message",
3212                                                               NULL,
3213                                                               G_PARAM_READABLE));
3214
3215         g_object_class_install_property (object_class,
3216                                          PROP_CONTINUOUS,
3217                                          g_param_spec_boolean ("continuous",
3218                                                                "Continuous",
3219                                                                "Continuous scrolling mode",
3220                                                                TRUE,
3221                                                                G_PARAM_READWRITE));
3222
3223         g_object_class_install_property (object_class,
3224                                          PROP_DUAL_PAGE,
3225                                          g_param_spec_boolean ("dual-page",
3226                                                                "Dual Page",
3227                                                                "Two pages visible at once",
3228                                                                FALSE,
3229                                                                G_PARAM_READWRITE));
3230         g_object_class_install_property (object_class,
3231                                          PROP_FULLSCREEN,
3232                                          g_param_spec_boolean ("fullscreen",
3233                                                                "Full Screen",
3234                                                                "Draw page in a fullscreen fashion",
3235                                                                FALSE,
3236                                                                G_PARAM_READWRITE));
3237         g_object_class_install_property (object_class,
3238                                          PROP_PRESENTATION,
3239                                          g_param_spec_boolean ("presentation",
3240                                                                "Presentation",
3241                                                                "Draw page in presentation mode",
3242                                                                TRUE,
3243                                                                G_PARAM_READWRITE));
3244
3245         g_object_class_install_property (object_class,
3246                                          PROP_SIZING_MODE,
3247                                          g_param_spec_enum ("sizing-mode",
3248                                                             "Sizing Mode",
3249                                                             "Sizing Mode",
3250                                                             EV_TYPE_SIZING_MODE,
3251                                                             EV_SIZING_FIT_WIDTH,
3252                                                             G_PARAM_READWRITE));
3253
3254         g_object_class_install_property (object_class,
3255                                          PROP_ZOOM,
3256                                          g_param_spec_double ("zoom",
3257                                                               "Zoom factor",
3258                                                                "Zoom factor",
3259                                                                MIN_SCALE,
3260                                                                MAX_SCALE,
3261                                                                1.0,
3262                                                                G_PARAM_READWRITE));
3263         g_object_class_install_property (object_class,
3264                                          PROP_ROTATION,
3265                                          g_param_spec_double ("rotation",
3266                                                               "Rotation",
3267                                                                "Rotation",
3268                                                                0,
3269                                                                360,
3270                                                                0,
3271                                                                G_PARAM_READWRITE));
3272         g_object_class_install_property (object_class,
3273                                          PROP_HAS_SELECTION,
3274                                          g_param_spec_boolean ("has-selection",
3275                                                                "Has selection",
3276                                                                "The view has selections",
3277                                                                FALSE,
3278                                                                G_PARAM_READABLE));
3279
3280         binding_set = gtk_binding_set_by_class (class);
3281
3282         add_scroll_binding_keypad (binding_set, GDK_Left,  0, EV_SCROLL_STEP_BACKWARD, TRUE);
3283         add_scroll_binding_keypad (binding_set, GDK_Right, 0, EV_SCROLL_STEP_FORWARD,  TRUE);
3284         add_scroll_binding_keypad (binding_set, GDK_Left,  GDK_MOD1_MASK, EV_SCROLL_STEP_DOWN, TRUE);
3285         add_scroll_binding_keypad (binding_set, GDK_Right, GDK_MOD1_MASK, EV_SCROLL_STEP_UP,  TRUE);
3286         add_scroll_binding_keypad (binding_set, GDK_Up,    0, EV_SCROLL_STEP_BACKWARD, FALSE);
3287         add_scroll_binding_keypad (binding_set, GDK_Down,  0, EV_SCROLL_STEP_FORWARD,  FALSE);
3288         add_scroll_binding_keypad (binding_set, GDK_Up,    GDK_MOD1_MASK, EV_SCROLL_STEP_DOWN, FALSE);
3289         add_scroll_binding_keypad (binding_set, GDK_Down,  GDK_MOD1_MASK, EV_SCROLL_STEP_UP,  FALSE);
3290 }
3291
3292 static void
3293 ev_view_init (EvView *view)
3294 {
3295         GTK_WIDGET_SET_FLAGS (view, GTK_CAN_FOCUS);
3296
3297         view->spacing = 5;
3298         view->scale = 1.0;
3299         view->current_page = 0;
3300         view->pressed_button = -1;
3301         view->cursor = EV_VIEW_CURSOR_NORMAL;
3302         view->drag_info.in_drag = FALSE;
3303         view->selection_info.selections = NULL;
3304         view->selection_info.in_selection = FALSE;
3305         view->selection_info.in_drag = FALSE;
3306         view->selection_mode = EV_VIEW_SELECTION_TEXT;
3307         view->continuous = TRUE;
3308         view->dual_page = FALSE;
3309         view->presentation = FALSE;
3310         view->presentation_state = EV_PRESENTATION_NORMAL;
3311         view->fullscreen = FALSE;
3312         view->sizing_mode = EV_SIZING_FIT_WIDTH;
3313         view->pending_scroll = SCROLL_TO_KEEP_POSITION;
3314         view->jump_to_find_result = TRUE;
3315
3316         gtk_drag_dest_set (GTK_WIDGET (view),
3317                            GTK_DEST_DEFAULT_ALL,
3318                            view_drop_targets,
3319                            G_N_ELEMENTS (view_drop_targets),
3320                            GDK_ACTION_COPY);
3321 }
3322
3323 /*** Callbacks ***/
3324
3325 static void
3326 find_changed_cb (EvDocument *document, int page, EvView *view)
3327 {
3328         double percent;
3329         int n_pages;
3330
3331         percent = ev_document_find_get_progress
3332                         (EV_DOCUMENT_FIND (view->document));
3333         n_pages = ev_page_cache_get_n_pages (view->page_cache);
3334
3335         if (view->jump_to_find_result == TRUE) {
3336                 jump_to_find_page (view, EV_VIEW_FIND_NEXT, 0);
3337                 jump_to_find_result (view);
3338         }
3339         update_find_status_message (view, percent * n_pages >= n_pages - 1 );
3340         if (view->current_page == page)
3341                 gtk_widget_queue_draw (GTK_WIDGET (view));
3342 }
3343
3344 static void
3345 job_finished_cb (EvPixbufCache *pixbuf_cache,
3346                  EvView        *view)
3347 {
3348         gtk_widget_queue_draw (GTK_WIDGET (view));
3349 }
3350
3351 static void
3352 page_changed_cb (EvPageCache *page_cache,
3353                  int          new_page,
3354                  EvView      *view)
3355 {
3356         if (view->current_page != new_page) {
3357                 view->current_page = new_page;
3358                 view->pending_scroll = SCROLL_TO_PAGE_POSITION;
3359                 if (view->presentation)
3360                         ev_view_presentation_transition_start (view);
3361                 gtk_widget_queue_resize (GTK_WIDGET (view));
3362         } else {
3363                 gtk_widget_queue_draw (GTK_WIDGET (view));
3364         }
3365
3366         if (EV_IS_DOCUMENT_FIND (view->document)) {
3367                 view->find_result = 0;
3368                 update_find_status_message (view, TRUE);
3369         }
3370 }
3371
3372 static void on_adjustment_value_changed (GtkAdjustment  *adjustment,
3373                                          EvView *view)
3374 {
3375         int dx = 0, dy = 0;
3376
3377         if (! GTK_WIDGET_REALIZED (view))
3378                 return;
3379
3380         if (view->hadjustment) {
3381                 dx = view->scroll_x - (int) view->hadjustment->value;
3382                 view->scroll_x = (int) view->hadjustment->value;
3383         } else {
3384                 view->scroll_x = 0;
3385         }
3386
3387         if (view->vadjustment) {
3388                 dy = view->scroll_y - (int) view->vadjustment->value;
3389                 view->scroll_y = (int) view->vadjustment->value;
3390         } else {
3391                 view->scroll_y = 0;
3392         }
3393
3394
3395         if (view->pending_resize)
3396                 gtk_widget_queue_draw (GTK_WIDGET (view));
3397         else
3398                 gdk_window_scroll (GTK_WIDGET (view)->window, dx, dy);
3399
3400
3401         if (view->document)
3402                 view_update_range_and_current_page (view);
3403 }
3404
3405 GtkWidget*
3406 ev_view_new (void)
3407 {
3408         GtkWidget *view;
3409
3410         view = g_object_new (EV_TYPE_VIEW, NULL);
3411
3412         return view;
3413 }
3414
3415 static void
3416 setup_caches (EvView *view)
3417 {
3418         view->page_cache = ev_page_cache_get (view->document);
3419         g_signal_connect (view->page_cache, "page-changed", G_CALLBACK (page_changed_cb), view);
3420         view->pixbuf_cache = ev_pixbuf_cache_new (GTK_WIDGET (view), view->document);
3421         g_signal_connect (view->pixbuf_cache, "job-finished", G_CALLBACK (job_finished_cb), view);
3422 }
3423
3424 static void
3425 clear_caches (EvView *view)
3426 {
3427         if (view->pixbuf_cache) {
3428                 g_object_unref (view->pixbuf_cache);
3429                 view->pixbuf_cache = NULL;
3430         }
3431
3432         if (view->page_cache) {
3433                 view->page_cache = NULL;
3434         }
3435 }
3436
3437 void
3438 ev_view_set_loading (EvView       *view,
3439                      gboolean      loading)
3440 {
3441         view->loading = loading;
3442         gtk_widget_queue_draw (GTK_WIDGET (view));
3443 }
3444
3445 void
3446 ev_view_set_document (EvView     *view,
3447                       EvDocument *document)
3448 {
3449         g_return_if_fail (EV_IS_VIEW (view));
3450
3451         view->loading = FALSE;
3452
3453         if (document != view->document) {
3454                 clear_caches (view);
3455
3456                 if (view->document) {
3457                         g_signal_handlers_disconnect_by_func (view->document,
3458                                                               find_changed_cb,
3459                                                               view);
3460                         g_object_unref (view->document);
3461                         view->page_cache = NULL;
3462
3463                 }
3464
3465                 view->document = document;
3466                 view->find_result = 0;
3467
3468                 if (view->document) {
3469                         g_object_ref (view->document);
3470                         if (EV_IS_DOCUMENT_FIND (view->document)) {
3471                                 g_signal_connect (view->document,
3472                                                   "find_changed",
3473                                                   G_CALLBACK (find_changed_cb),
3474                                                   view);
3475                         }
3476
3477                         setup_caches (view);
3478                 }
3479
3480                 gtk_widget_queue_resize (GTK_WIDGET (view));
3481         }
3482 }
3483
3484 /*** Zoom and sizing mode ***/
3485
3486 #define EPSILON 0.0000001
3487 void
3488 ev_view_set_zoom (EvView   *view,
3489                   double    factor,
3490                   gboolean  relative)
3491 {
3492         double scale;
3493
3494         if (relative)
3495                 scale = view->scale * factor;
3496         else
3497                 scale = factor;
3498
3499         scale = CLAMP (scale, MIN_SCALE, MAX_SCALE);
3500
3501         if (ABS (view->scale - scale) < EPSILON)
3502                 return;
3503
3504         view->scale = scale;
3505         view->pending_resize = TRUE;
3506
3507         gtk_widget_queue_resize (GTK_WIDGET (view));
3508
3509         g_object_notify (G_OBJECT (view), "zoom");
3510 }
3511
3512 double
3513 ev_view_get_zoom (EvView *view)
3514 {
3515         return view->scale;
3516 }
3517
3518 gboolean
3519 ev_view_get_continuous (EvView *view)
3520 {
3521         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
3522
3523         return view->continuous;
3524 }
3525
3526 void
3527 ev_view_set_continuous (EvView   *view,
3528                         gboolean  continuous)
3529 {
3530         g_return_if_fail (EV_IS_VIEW (view));
3531
3532         continuous = continuous != FALSE;
3533
3534         if (view->continuous != continuous) {
3535                 view->continuous = continuous;
3536                 view->pending_scroll = SCROLL_TO_PAGE_POSITION;
3537                 gtk_widget_queue_resize (GTK_WIDGET (view));
3538         }
3539
3540         g_object_notify (G_OBJECT (view), "continuous");
3541 }
3542
3543 gboolean
3544 ev_view_get_dual_page (EvView *view)
3545 {
3546         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
3547
3548         return view->dual_page;
3549 }
3550
3551 void
3552 ev_view_set_dual_page (EvView   *view,
3553                        gboolean  dual_page)
3554 {
3555         g_return_if_fail (EV_IS_VIEW (view));
3556
3557         dual_page = dual_page != FALSE;
3558
3559         if (view->dual_page == dual_page)
3560                 return;
3561
3562         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
3563         view->dual_page = dual_page;
3564         /* FIXME: if we're keeping the pixbuf cache around, we should extend the
3565          * preload_cache_size to be 2 if dual_page is set.
3566          */
3567         gtk_widget_queue_resize (GTK_WIDGET (view));
3568
3569         g_object_notify (G_OBJECT (view), "dual-page");
3570 }
3571
3572 void
3573 ev_view_set_fullscreen (EvView   *view,
3574                          gboolean  fullscreen)
3575 {
3576         g_return_if_fail (EV_IS_VIEW (view));
3577
3578         fullscreen = fullscreen != FALSE;
3579
3580         if (view->fullscreen == fullscreen)
3581                 return;
3582
3583         view->fullscreen = fullscreen;
3584         gtk_widget_queue_resize (GTK_WIDGET (view));
3585
3586         g_object_notify (G_OBJECT (view), "fullscreen");
3587 }
3588
3589 gboolean
3590 ev_view_get_fullscreen (EvView *view)
3591 {
3592         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
3593
3594         return view->fullscreen;
3595 }
3596
3597 void
3598 ev_view_set_presentation (EvView   *view,
3599                           gboolean  presentation)
3600 {
3601         g_return_if_fail (EV_IS_VIEW (view));
3602
3603         presentation = presentation != FALSE;
3604
3605         if (view->presentation == presentation)
3606                 return;
3607
3608         if (!presentation)
3609                 view->presentation_state = EV_PRESENTATION_NORMAL;
3610
3611         view->presentation = presentation;
3612         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
3613
3614         if (presentation) {
3615                 view->sizing_mode_saved = view->sizing_mode;
3616                 view->scale_saved = view->scale;
3617                 ev_view_set_sizing_mode (view, EV_SIZING_BEST_FIT);
3618         } else {
3619                 ev_view_set_sizing_mode (view, view->sizing_mode_saved);
3620                 ev_view_set_zoom (view, view->scale_saved, FALSE);
3621         }
3622
3623         gtk_widget_queue_resize (GTK_WIDGET (view));
3624
3625         if (presentation)
3626                 ev_view_presentation_transition_start (view);
3627         else
3628                 ev_view_presentation_transition_stop (view);
3629
3630         if (GTK_WIDGET_REALIZED (view)) {
3631                 if (view->presentation)
3632                         gdk_window_set_background (GTK_WIDGET(view)->window,
3633                                                    &GTK_WIDGET (view)->style->black);
3634                 else
3635                         gdk_window_set_background (GTK_WIDGET(view)->window,
3636                                                    &GTK_WIDGET (view)->style->mid [GTK_STATE_NORMAL]);
3637         }
3638
3639         g_object_notify (G_OBJECT (view), "presentation");
3640 }
3641
3642 gboolean
3643 ev_view_get_presentation (EvView *view)
3644 {
3645         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
3646
3647         return view->presentation;
3648 }
3649
3650 static gboolean
3651 transition_next_page (EvView *view)
3652 {
3653         ev_view_next_page (view);
3654
3655         return FALSE;
3656 }
3657
3658 static void
3659 ev_view_presentation_transition_stop (EvView *view)
3660 {
3661         if (view->trans_timeout_id > 0)
3662                 g_source_remove (view->trans_timeout_id);
3663         view->trans_timeout_id = 0;
3664 }
3665
3666 static void
3667 ev_view_presentation_transition_start (EvView *view)
3668 {
3669         gdouble duration;
3670
3671         if (!EV_IS_DOCUMENT_TRANSITION (view->document))
3672                 return;
3673
3674         ev_view_presentation_transition_stop (view);
3675
3676         duration = ev_document_transition_get_page_duration (EV_DOCUMENT_TRANSITION (view->document),
3677                                                              view->current_page);
3678         if (duration > 0)
3679                 view->trans_timeout_id = g_timeout_add (duration * 1000,
3680                                                         (GSourceFunc) transition_next_page,
3681                                                         view);
3682 }
3683
3684 void
3685 ev_view_set_sizing_mode (EvView       *view,
3686                          EvSizingMode  sizing_mode)
3687 {
3688         g_return_if_fail (EV_IS_VIEW (view));
3689
3690         if (view->sizing_mode == sizing_mode)
3691                 return;
3692
3693         view->sizing_mode = sizing_mode;
3694         gtk_widget_queue_resize (GTK_WIDGET (view));
3695
3696         g_object_notify (G_OBJECT (view), "sizing-mode");
3697 }
3698
3699 EvSizingMode
3700 ev_view_get_sizing_mode (EvView *view)
3701 {
3702         g_return_val_if_fail (EV_IS_VIEW (view), EV_SIZING_FREE);
3703
3704         return view->sizing_mode;
3705 }
3706
3707 gboolean
3708 ev_view_can_zoom_in (EvView *view)
3709 {
3710         return view->scale * ZOOM_IN_FACTOR <= MAX_SCALE;
3711 }
3712
3713 gboolean
3714 ev_view_can_zoom_out (EvView *view)
3715 {
3716         return view->scale * ZOOM_OUT_FACTOR >= MIN_SCALE;
3717 }
3718
3719 void
3720 ev_view_zoom_in (EvView *view)
3721 {
3722         g_return_if_fail (view->sizing_mode == EV_SIZING_FREE);
3723
3724         view->pending_scroll = SCROLL_TO_CENTER;
3725         ev_view_set_zoom (view, ZOOM_IN_FACTOR, TRUE);
3726 }
3727
3728 void
3729 ev_view_zoom_out (EvView *view)
3730 {
3731         g_return_if_fail (view->sizing_mode == EV_SIZING_FREE);
3732
3733         view->pending_scroll = SCROLL_TO_CENTER;
3734         ev_view_set_zoom (view, ZOOM_OUT_FACTOR, TRUE);
3735 }
3736
3737 void
3738 ev_view_rotate_right (EvView *view)
3739 {
3740         int rotation = view->rotation + 90;
3741
3742         if (rotation >= 360) {
3743                 rotation -= 360;
3744         }
3745
3746         ev_view_set_rotation (view, rotation);
3747 }
3748
3749 void
3750 ev_view_rotate_left (EvView *view)
3751 {
3752         int rotation = view->rotation - 90;
3753
3754         if (rotation < 0) {
3755                 rotation += 360;
3756         }
3757
3758         ev_view_set_rotation (view, rotation);
3759 }
3760
3761 void
3762 ev_view_set_rotation (EvView *view, int rotation)
3763 {
3764         view->rotation = rotation;
3765
3766         if (view->pixbuf_cache) {
3767                 ev_pixbuf_cache_clear (view->pixbuf_cache);
3768                 gtk_widget_queue_resize (GTK_WIDGET (view));
3769         }
3770
3771         if (rotation != 0)
3772                 clear_selection (view);
3773
3774         g_object_notify (G_OBJECT (view), "rotation");
3775 }
3776
3777 int
3778 ev_view_get_rotation (EvView *view)
3779 {
3780         return view->rotation;
3781 }
3782
3783 static double
3784 zoom_for_size_fit_width (int doc_width,
3785                          int doc_height,
3786                          int target_width,
3787                          int target_height,
3788                          int vsb_width)
3789 {
3790         double scale;
3791
3792         scale = (double)target_width / doc_width;
3793
3794         if (doc_height * scale > target_height)
3795                 scale = (double) (target_width - vsb_width) / doc_width;
3796
3797         return scale;
3798 }
3799
3800 static double
3801 zoom_for_size_fit_height (int doc_width,
3802                           int doc_height,
3803                           int target_width,
3804                           int target_height,
3805                           int vsb_height)
3806 {
3807         double scale;
3808
3809         scale = (double)target_height / doc_height;
3810
3811         if (doc_width * scale > target_width)
3812                 scale = (double) (target_height - vsb_height) / doc_height;
3813
3814         return scale;
3815 }
3816
3817 static double
3818 zoom_for_size_best_fit (int doc_width,
3819                         int doc_height,
3820                         int target_width,
3821                         int target_height,
3822                         int vsb_width,
3823                         int hsb_width)
3824 {
3825         double w_scale;
3826         double h_scale;
3827
3828         w_scale = (double)target_width / doc_width;
3829         h_scale = (double)target_height / doc_height;
3830
3831         if (doc_height * w_scale > target_height)
3832                 w_scale = (double) (target_width - vsb_width) / doc_width;
3833         if (doc_width * h_scale > target_width)
3834                 h_scale = (double) (target_height - hsb_width) / doc_height;
3835
3836         return MIN (w_scale, h_scale);
3837 }
3838
3839
3840 static void
3841 ev_view_zoom_for_size_presentation (EvView *view,
3842                                     int     width,
3843                                     int     height)
3844 {
3845         int doc_width, doc_height;
3846         gdouble scale;
3847
3848         ev_page_cache_get_size (view->page_cache,
3849                                 view->current_page,
3850                                 view->rotation,
3851                                 1.0,
3852                                 &doc_width,
3853                                 &doc_height);
3854         scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, 0, 0);
3855         ev_view_set_zoom (view, scale, FALSE);
3856 }
3857
3858 static void
3859 ev_view_zoom_for_size_continuous_and_dual_page (EvView *view,
3860                            int     width,
3861                            int     height,
3862                            int     vsb_width,
3863                            int     hsb_height)
3864 {
3865         int doc_width, doc_height;
3866         GtkBorder border;
3867         gdouble scale;
3868
3869         ev_page_cache_get_max_width (view->page_cache,
3870                                      view->rotation,
3871                                      1.0,
3872                                      &doc_width);
3873         ev_page_cache_get_max_height (view->page_cache,
3874                                       view->rotation,
3875                                       1.0,
3876                                       &doc_height);
3877         compute_border (view, doc_width, doc_height, &border);
3878
3879         doc_width = doc_width * 2;
3880         width -= (2 * (border.left + border.right) + 3 * view->spacing);
3881         height -= (border.top + border.bottom + 2 * view->spacing - 1);
3882
3883         /* FIXME: We really need to calculate the overall height here, not the
3884          * page height.  We assume there's always a vertical scrollbar for
3885          * now.  We need to fix this. */
3886         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
3887                 scale = zoom_for_size_fit_width (doc_width, doc_height, width - vsb_width, height, 0);
3888         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
3889                 scale = zoom_for_size_best_fit (doc_width, doc_height, width - vsb_width, height, 0, hsb_height);
3890         else
3891                 g_assert_not_reached ();
3892
3893         ev_view_set_zoom (view, scale, FALSE);
3894 }
3895
3896 static void
3897 ev_view_zoom_for_size_continuous (EvView *view,
3898                                   int     width,
3899                                   int     height,
3900                                   int     vsb_width,
3901                                   int     hsb_height)
3902 {
3903         int doc_width, doc_height;
3904         GtkBorder border;
3905         gdouble scale;
3906
3907         ev_page_cache_get_max_width (view->page_cache,
3908                                      view->rotation,
3909                                      1.0,
3910                                      &doc_width);
3911         ev_page_cache_get_max_height (view->page_cache,
3912                                       view->rotation,
3913                                       1.0,
3914                                       &doc_height);
3915         compute_border (view, doc_width, doc_height, &border);
3916
3917         width -= (border.left + border.right + 2 * view->spacing);
3918         height -= (border.top + border.bottom + 2 * view->spacing - 1);
3919
3920         /* FIXME: We really need to calculate the overall height here, not the
3921          * page height.  We assume there's always a vertical scrollbar for
3922          * now.  We need to fix this. */
3923         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
3924                 scale = zoom_for_size_fit_width (doc_width, doc_height, width - vsb_width, height, 0);
3925         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
3926                 scale = zoom_for_size_best_fit (doc_width, doc_height, width - vsb_width, height, 0, hsb_height);
3927         else
3928                 g_assert_not_reached ();
3929
3930         ev_view_set_zoom (view, scale, FALSE);
3931 }
3932
3933 static void
3934 ev_view_zoom_for_size_dual_page (EvView *view,
3935                                  int     width,
3936                                  int     height,
3937                                  int     vsb_width,
3938                                  int     hsb_height)
3939 {
3940         GtkBorder border;
3941         gint doc_width, doc_height;
3942         gdouble scale;
3943         gint other_page;
3944
3945         other_page = view->current_page ^ 1;
3946
3947         /* Find the largest of the two. */
3948         ev_page_cache_get_size (view->page_cache,
3949                                 view->current_page,
3950                                 view->rotation,
3951                                 1.0,
3952                                 &doc_width, &doc_height);
3953
3954         if (other_page < ev_page_cache_get_n_pages (view->page_cache)) {
3955                 gint width_2, height_2;
3956                 ev_page_cache_get_size (view->page_cache,
3957                                         other_page,
3958                                         view->rotation,
3959                                         1.0,
3960                                         &width_2, &height_2);
3961                 if (width_2 > doc_width)
3962                         doc_width = width_2;
3963                 if (height_2 > doc_height)
3964                         doc_height = height_2;
3965         }
3966         compute_border (view, doc_width, doc_height, &border);
3967
3968         doc_width = doc_width * 2;
3969         width -= ((border.left + border.right)* 2 + 3 * view->spacing);
3970         height -= (border.top + border.bottom + 2 * view->spacing);
3971
3972         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
3973                 scale = zoom_for_size_fit_width (doc_width, doc_height, width, height, vsb_width);
3974         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
3975                 scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, vsb_width, hsb_height);
3976         else
3977                 g_assert_not_reached ();
3978
3979         ev_view_set_zoom (view, scale, FALSE);
3980 }
3981
3982 static void
3983 ev_view_zoom_for_size_single_page (EvView *view,
3984                                    int     width,
3985                                    int     height,
3986                                    int     vsb_width,
3987                                    int     hsb_height)
3988 {
3989         int doc_width, doc_height;
3990         GtkBorder border;
3991         gdouble scale;
3992
3993         ev_page_cache_get_size (view->page_cache,
3994                                 view->current_page,
3995                                 view->rotation,
3996                                 1.0,
3997                                 &doc_width,
3998                                 &doc_height);
3999         /* Get an approximate border */
4000         compute_border (view, width, height, &border);
4001
4002         width -= (border.left + border.right + 2 * view->spacing);
4003         height -= (border.top + border.bottom + 2 * view->spacing);
4004
4005         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
4006                 scale = zoom_for_size_fit_width (doc_width, doc_height, width, height, vsb_width);
4007         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
4008                 scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, vsb_width, hsb_height);
4009         else
4010                 g_assert_not_reached ();
4011
4012         ev_view_set_zoom (view, scale, FALSE);
4013 }
4014
4015 void
4016 ev_view_set_zoom_for_size (EvView *view,
4017                            int     width,
4018                            int     height,
4019                            int     vsb_width,
4020                            int     hsb_height)
4021 {
4022         g_return_if_fail (view->sizing_mode == EV_SIZING_FIT_WIDTH ||
4023                           view->sizing_mode == EV_SIZING_BEST_FIT);
4024         g_return_if_fail (width >= 0);
4025         g_return_if_fail (height >= 0);
4026
4027         if (view->document == NULL)
4028                 return;
4029
4030         if (view->presentation)
4031                 ev_view_zoom_for_size_presentation (view, width, height);
4032         else if (view->continuous && view->dual_page)
4033                 ev_view_zoom_for_size_continuous_and_dual_page (view, width, height, vsb_width, hsb_height);
4034         else if (view->continuous)
4035                 ev_view_zoom_for_size_continuous (view, width, height, vsb_width, hsb_height);
4036         else if (view->dual_page)
4037                 ev_view_zoom_for_size_dual_page (view, width, height, vsb_width, hsb_height);
4038         else
4039                 ev_view_zoom_for_size_single_page (view, width, height, vsb_width, hsb_height);
4040 }
4041
4042 /*** Status text messages ***/
4043
4044 const char *
4045 ev_view_get_status (EvView *view)
4046 {
4047         g_return_val_if_fail (EV_IS_VIEW (view), NULL);
4048
4049         return view->status;
4050 }
4051
4052 static void
4053 ev_view_set_status (EvView *view, const char *message)
4054 {
4055         g_return_if_fail (EV_IS_VIEW (view));
4056
4057         if (message != view->status) {
4058                 g_free (view->status);
4059                 view->status = g_strdup (message);
4060                 g_object_notify (G_OBJECT (view), "status");
4061         }
4062 }
4063
4064 static void
4065 update_find_status_message (EvView *view, gboolean this_page)
4066 {
4067         char *message;
4068
4069         if (this_page) {
4070                 int results;
4071
4072                 results = ev_document_find_get_n_results
4073                                 (EV_DOCUMENT_FIND (view->document),
4074                                  view->current_page);
4075                 /* TRANS: Sometimes this could be better translated as
4076                    "%d hit(s) on this page".  Therefore this string
4077                    contains plural cases. */
4078                 message = g_strdup_printf (ngettext ("%d found on this page",
4079                                                      "%d found on this page",
4080                                                      results),
4081                                            results);
4082         } else {
4083                 double percent;
4084
4085                 percent = ev_document_find_get_progress
4086                                 (EV_DOCUMENT_FIND (view->document));
4087                 message = g_strdup_printf (_("%3d%% remaining to search"),
4088                                            (int) ((1.0 - percent) * 100));
4089
4090         }
4091         ev_view_set_find_status (view, message);
4092         g_free (message);
4093 }
4094
4095 const char *
4096 ev_view_get_find_status (EvView *view)
4097 {
4098         g_return_val_if_fail (EV_IS_VIEW (view), NULL);
4099
4100         return view->find_status;
4101 }
4102
4103 static void
4104 ev_view_set_find_status (EvView *view, const char *message)
4105 {
4106         g_return_if_fail (EV_IS_VIEW (view));
4107
4108         g_free (view->find_status);
4109         view->find_status = g_strdup (message);
4110         g_object_notify (G_OBJECT (view), "find-status");
4111 }
4112
4113 /*** Find ***/
4114
4115 static void
4116 jump_to_find_result (EvView *view)
4117 {
4118         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
4119         EvRectangle rect;
4120         GdkRectangle view_rect;
4121         int n_results;
4122         int page = view->current_page;
4123
4124         n_results = ev_document_find_get_n_results (find, page);
4125
4126         if (n_results > 0  && view->find_result < n_results) {
4127                 ev_document_find_get_result
4128                         (find, page, view->find_result, &rect);
4129
4130                 doc_rect_to_view_rect (view, page, &rect, &view_rect);
4131                 ensure_rectangle_is_visible (view, &view_rect);
4132         }
4133 }
4134
4135 /**
4136  * jump_to_find_page
4137  * @view: #EvView instance
4138  * @direction: Direction to look
4139  * @shift: Shift from current page
4140  *
4141  * Jumps to the first page that has occurences of searched word.
4142  * Uses a direction where to look and a shift from current page.
4143  *
4144  */
4145 static void
4146 jump_to_find_page (EvView *view, EvViewFindDirection direction, gint shift)
4147 {
4148         int n_pages, i;
4149
4150         n_pages = ev_page_cache_get_n_pages (view->page_cache);
4151
4152         for (i = 0; i < n_pages; i++) {
4153                 int has_results;
4154                 int page;
4155
4156                 if (direction == EV_VIEW_FIND_NEXT)
4157                         page = view->current_page + i;
4158                 else
4159                         page = view->current_page - i;
4160                 page += shift;
4161
4162                 if (page >= n_pages) {
4163                         page = page - n_pages;
4164                 }
4165                 if (page < 0)
4166                         page = page + n_pages;
4167
4168                 has_results = ev_document_find_page_has_results
4169                                 (EV_DOCUMENT_FIND (view->document), page);
4170                 if (has_results == -1) {
4171                         break;
4172                 } else if (has_results == 1) {
4173                         ev_page_cache_set_current_page (view->page_cache, page);
4174                         break;
4175                 }
4176         }
4177 }
4178
4179 gboolean
4180 ev_view_can_find_next (EvView *view)
4181 {
4182         if (EV_IS_DOCUMENT_FIND (view->document)) {
4183                 EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
4184                 int i, n_pages;
4185
4186                 n_pages = ev_page_cache_get_n_pages (view->page_cache);
4187                 for (i = 0; i < n_pages; i++) {
4188                         if (ev_document_find_get_n_results (find, i) > 0) {
4189                                 return TRUE;
4190                         }
4191                 }
4192         }
4193
4194         return FALSE;
4195 }
4196
4197 void
4198 ev_view_find_next (EvView *view)
4199 {
4200         int n_results, n_pages;
4201         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
4202
4203         n_results = ev_document_find_get_n_results (find, view->current_page);
4204
4205         n_pages = ev_page_cache_get_n_pages (view->page_cache);
4206
4207         view->find_result++;
4208
4209         if (view->find_result >= n_results) {
4210
4211                 view->find_result = 0;
4212                 jump_to_find_page (view, EV_VIEW_FIND_NEXT, 1);
4213                 jump_to_find_result (view);
4214         } else {
4215                 jump_to_find_result (view);
4216                 gtk_widget_queue_draw (GTK_WIDGET (view));
4217         }
4218 }
4219
4220 gboolean
4221 ev_view_can_find_previous (EvView *view)
4222 {
4223         if (EV_IS_DOCUMENT_FIND (view->document)) {
4224                 EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
4225                 int i, n_pages;
4226
4227                 n_pages = ev_page_cache_get_n_pages (view->page_cache);
4228                 for (i = n_pages - 1; i >= 0; i--) {
4229                         if (ev_document_find_get_n_results (find, i) > 0) {
4230                                 return TRUE;
4231                         }
4232                 }
4233         }
4234
4235         return FALSE;
4236 }
4237 void
4238 ev_view_find_previous (EvView *view)
4239 {
4240         int n_results, n_pages;
4241         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
4242         EvPageCache *page_cache;
4243
4244         page_cache = ev_page_cache_get (view->document);
4245
4246         n_results = ev_document_find_get_n_results (find, view->current_page);
4247
4248         n_pages = ev_page_cache_get_n_pages (page_cache);
4249
4250         view->find_result--;
4251
4252         if (view->find_result < 0) {
4253
4254                 jump_to_find_page (view, EV_VIEW_FIND_PREV, -1);
4255                 view->find_result = ev_document_find_get_n_results (find, view->current_page) - 1;
4256                 jump_to_find_result (view);
4257         } else {
4258                 jump_to_find_result (view);
4259                 gtk_widget_queue_draw (GTK_WIDGET (view));
4260         }
4261 }
4262
4263 void ev_view_search_changed (EvView *view)
4264 {
4265         /* search string has changed, focus on new search result */
4266         view->jump_to_find_result = TRUE;
4267 }
4268
4269 /*** Selections ***/
4270
4271 /* compute_new_selection_rect/text calculates the area currently selected by
4272  * view_rect.  each handles a different mode;
4273  */
4274 static GList *
4275 compute_new_selection_rect (EvView       *view,
4276                             GdkPoint     *start,
4277                             GdkPoint     *stop)
4278 {
4279         GdkRectangle view_rect;
4280         int n_pages, i;
4281         GList *list = NULL;
4282
4283         g_assert (view->selection_mode == EV_VIEW_SELECTION_RECTANGLE);
4284
4285         view_rect.x = MIN (start->x, stop->x);
4286         view_rect.y = MIN (start->y, stop->y);
4287         view_rect.width = MAX (start->x, stop->x) - view_rect.x;
4288         view_rect.width = MAX (start->y, stop->y) - view_rect.y;
4289
4290         n_pages = ev_page_cache_get_n_pages (view->page_cache);
4291
4292         for (i = 0; i < n_pages; i++) {
4293                 GdkRectangle page_area;
4294                 GtkBorder border;
4295
4296                 if (get_page_extents (view, i, &page_area, &border)) {
4297                         GdkRectangle overlap;
4298
4299                         if (gdk_rectangle_intersect (&page_area, &view_rect, &overlap)) {
4300                                 EvViewSelection *selection;
4301
4302                                 selection = g_new0 (EvViewSelection, 1);
4303                                 selection->page = i;
4304                                 view_rect_to_doc_rect (view, &overlap, &page_area,
4305                                                        &(selection->rect));
4306
4307                                 list = g_list_append (list, selection);
4308                         }
4309                 }
4310         }
4311
4312         return list;
4313 }
4314
4315 static gboolean
4316 gdk_rectangle_point_in (GdkRectangle *rectangle,
4317                         GdkPoint     *point)
4318 {
4319         return rectangle->x <= point->x &&
4320                 rectangle->y <= point->y &&
4321                 point->x < rectangle->x + rectangle->width &&
4322                 point->y < rectangle->y + rectangle->height;
4323 }
4324
4325 static GList *
4326 compute_new_selection_text (EvView   *view,
4327                             GdkPoint *start,
4328                             GdkPoint *stop)
4329 {
4330         int n_pages, i, first, last;
4331         GList *list = NULL;
4332         EvViewSelection *selection;
4333         gint width, height;
4334         int start_page, end_page;
4335
4336         g_assert (view->selection_mode == EV_VIEW_SELECTION_TEXT);
4337
4338         n_pages = ev_page_cache_get_n_pages (view->page_cache);
4339
4340         /* First figure out the range of pages the selection
4341          * affects. */
4342         first = n_pages;
4343         last = 0;
4344         if (view->continuous) {
4345                 start_page = 0;
4346                 end_page = n_pages;
4347         } else if (view->dual_page) {
4348                 start_page = view->start_page;
4349                 end_page = view->end_page + 1;
4350         } else {
4351                 start_page = view->current_page;
4352                 end_page = view->current_page + 1;
4353         }
4354
4355         for (i = start_page; i < end_page; i++) {
4356                 GdkRectangle page_area;
4357                 GtkBorder border;
4358
4359                 get_page_extents (view, i, &page_area, &border);
4360                 if (gdk_rectangle_point_in (&page_area, start) ||
4361                     gdk_rectangle_point_in (&page_area, stop)) {
4362                         if (first == n_pages)
4363                                 first = i;
4364                         last = i;
4365                 }
4366
4367         }
4368
4369
4370
4371         /* Now create a list of EvViewSelection's for the affected
4372          * pages.  This could be an empty list, a list of just one
4373          * page or a number of pages.*/
4374         for (i = first; i < last + 1; i++) {
4375                 GdkRectangle page_area;
4376                 GtkBorder border;
4377                 GdkPoint *point;
4378
4379                 ev_page_cache_get_size (view->page_cache, i,
4380                                         view->rotation,
4381                                         1.0, &width, &height);
4382
4383                 selection = g_new0 (EvViewSelection, 1);
4384                 selection->page = i;
4385                 selection->rect.x1 = selection->rect.y1 = 0;
4386                 selection->rect.x2 = width;
4387                 selection->rect.y2 = height;
4388
4389                 get_page_extents (view, i, &page_area, &border);
4390
4391                 if (gdk_rectangle_point_in (&page_area, start))
4392                         point = start;
4393                 else
4394                         point = stop;
4395
4396                 if (i == first)
4397                         view_point_to_doc_point (view, point, &page_area,
4398                                                  &selection->rect.x1,
4399                                                  &selection->rect.y1);
4400
4401                 /* If the selection is contained within just one page,
4402                  * make sure we don't write 'start' into both points
4403                  * in selection->rect. */
4404                 if (first == last)
4405                         point = stop;
4406
4407                 if (i == last)
4408                         view_point_to_doc_point (view, point, &page_area,
4409                                                  &selection->rect.x2,
4410                                                  &selection->rect.y2);
4411
4412                 list = g_list_append (list, selection);
4413         }
4414
4415         return list;
4416 }
4417
4418 /* This function takes the newly calculated list, and figures out which regions
4419  * have changed.  It then queues a redraw approporiately.
4420  */
4421 static void
4422 merge_selection_region (EvView *view,
4423                         GList  *new_list)
4424 {
4425         GList *old_list;
4426         GList *new_list_ptr, *old_list_ptr;
4427
4428         /* Update the selection */
4429         old_list = ev_pixbuf_cache_get_selection_list (view->pixbuf_cache);
4430         g_list_foreach (view->selection_info.selections, (GFunc)selection_free, NULL);
4431         view->selection_info.selections = new_list;
4432         ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, new_list);
4433         g_object_notify (G_OBJECT (view), "has-selection");
4434
4435         new_list_ptr = new_list;
4436         old_list_ptr = old_list;
4437
4438         while (new_list_ptr || old_list_ptr) {
4439                 EvViewSelection *old_sel, *new_sel;
4440                 int cur_page;
4441                 GdkRegion *region = NULL;
4442
4443                 new_sel = (new_list_ptr) ? (new_list_ptr->data) : NULL;
4444                 old_sel = (old_list_ptr) ? (old_list_ptr->data) : NULL;
4445
4446                 /* Assume that the lists are in order, and we run through them
4447                  * comparing them, one page at a time.  We come out with the
4448                  * first page we see. */
4449                 if (new_sel && old_sel) {
4450                         if (new_sel->page < old_sel->page) {
4451                                 new_list_ptr = new_list_ptr->next;
4452                                 old_sel = NULL;
4453                         } else if (new_sel->page > old_sel->page) {
4454                                 old_list_ptr = old_list_ptr->next;
4455                                 new_sel = NULL;
4456                         } else {
4457                                 new_list_ptr = new_list_ptr->next;
4458                                 old_list_ptr = old_list_ptr->next;
4459                         }
4460                 } else if (new_sel) {
4461                         new_list_ptr = new_list_ptr->next;
4462                 } else if (old_sel) {
4463                         old_list_ptr = old_list_ptr->next;
4464                 }
4465
4466                 g_assert (new_sel || old_sel);
4467
4468                 /* is the page we're looking at on the screen?*/
4469                 cur_page = new_sel ? new_sel->page : old_sel->page;
4470                 if (cur_page < view->start_page || cur_page > view->end_page)
4471                         continue;
4472
4473                 /* seed the cache with a new page.  We are going to need the new
4474                  * region too. */
4475                 if (new_sel) {
4476                         GdkRegion *tmp_region = NULL;
4477                         ev_pixbuf_cache_get_selection_pixbuf (view->pixbuf_cache,
4478                                                               cur_page,
4479                                                               view->scale,
4480                                                               &tmp_region);
4481                         if (tmp_region) {
4482                                 new_sel->covered_region = gdk_region_copy (tmp_region);
4483                         }
4484                 }
4485
4486                 /* Now we figure out what needs redrawing */
4487                 if (old_sel && new_sel) {
4488                         if (old_sel->covered_region &&
4489                             new_sel->covered_region) {
4490                                 /* We only want to redraw the areas that have
4491                                  * changed, so we xor the old and new regions
4492                                  * and redraw if it's different */
4493                                 region = gdk_region_copy (old_sel->covered_region);
4494                                 gdk_region_xor (region, new_sel->covered_region);
4495                                 if (gdk_region_empty (region)) {
4496                                         gdk_region_destroy (region);
4497                                         region = NULL;
4498                                 }
4499                         } else if (old_sel->covered_region) {
4500                                 region = gdk_region_copy (old_sel->covered_region);
4501                         } else if (new_sel->covered_region) {
4502                                 region = gdk_region_copy (new_sel->covered_region);
4503                         }
4504                 } else if (old_sel && !new_sel) {
4505                         if (old_sel->covered_region && !gdk_region_empty (old_sel->covered_region)) {
4506                                 region = gdk_region_copy (old_sel->covered_region);
4507                         }
4508                 } else if (!old_sel && new_sel) {
4509                         if (new_sel->covered_region && !gdk_region_empty (new_sel->covered_region)) {
4510                                 region = gdk_region_copy (new_sel->covered_region);
4511                         }
4512                 } else {
4513                         g_assert_not_reached ();
4514                 }
4515
4516                 /* Redraw the damaged region! */
4517                 if (region) {
4518                         GdkRectangle page_area;
4519                         GtkBorder border;
4520
4521                         get_page_extents (view, cur_page, &page_area, &border);
4522                         gdk_region_offset (region,
4523                                            page_area.x + border.left - view->scroll_x,
4524                                            page_area.y + border.top - view->scroll_y);
4525                         gdk_window_invalidate_region (GTK_WIDGET (view)->window, region, TRUE);
4526                         gdk_region_destroy (region);
4527                 }
4528         }
4529
4530         /* Free the old list, now that we're done with it. */
4531         g_list_foreach (old_list, (GFunc) selection_free, NULL);
4532 }
4533
4534 static void
4535 compute_selections (EvView   *view,
4536                     GdkPoint *start,
4537                     GdkPoint *stop)
4538 {
4539         GList *list;
4540
4541         if (view->selection_mode == EV_VIEW_SELECTION_RECTANGLE)
4542                 list = compute_new_selection_rect (view, start, stop);
4543         else
4544                 list = compute_new_selection_text (view, start, stop);
4545         merge_selection_region (view, list);
4546 }
4547
4548 /* Free's the selection.  It's up to the caller to queue redraws if needed.
4549  */
4550 static void
4551 selection_free (EvViewSelection *selection)
4552 {
4553         if (selection->covered_region)
4554                 gdk_region_destroy (selection->covered_region);
4555         g_free (selection);
4556 }
4557
4558 static void
4559 clear_selection (EvView *view)
4560 {
4561         g_list_foreach (view->selection_info.selections, (GFunc)selection_free, NULL);
4562         view->selection_info.selections = NULL;
4563         view->selection_info.in_selection = FALSE;
4564         if (view->pixbuf_cache)
4565                 ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, NULL);
4566         g_object_notify (G_OBJECT (view), "has-selection");
4567 }
4568
4569
4570 void
4571 ev_view_select_all (EvView *view)
4572 {
4573         int n_pages, i;
4574
4575         /* Disable selection on rotated pages for the 0.4.0 series */
4576         if (view->rotation != 0)
4577                 return;
4578
4579         clear_selection (view);
4580
4581         n_pages = ev_page_cache_get_n_pages (view->page_cache);
4582         for (i = 0; i < n_pages; i++) {
4583                 int width, height;
4584                 EvViewSelection *selection;
4585
4586                 ev_page_cache_get_size (view->page_cache,
4587                                         i,
4588                                         view->rotation,
4589                                         1.0, &width, &height);
4590
4591                 selection = g_new0 (EvViewSelection, 1);
4592                 selection->page = i;
4593                 selection->rect.x1 = selection->rect.y1 = 0;
4594                 selection->rect.x2 = width;
4595                 selection->rect.y2 = height;
4596
4597                 view->selection_info.selections = g_list_append (view->selection_info.selections, selection);
4598         }
4599
4600         ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, view->selection_info.selections);
4601         g_object_notify (G_OBJECT (view), "has-selection");
4602         gtk_widget_queue_draw (GTK_WIDGET (view));
4603 }
4604
4605 gboolean
4606 ev_view_get_has_selection (EvView *view)
4607 {
4608         return view->selection_info.selections != NULL;
4609 }
4610
4611 static char *
4612 get_selected_text (EvView *ev_view)
4613 {
4614         GString *text;
4615         GList *l;
4616
4617         text = g_string_new (NULL);
4618
4619         ev_document_doc_mutex_lock ();
4620
4621         for (l = ev_view->selection_info.selections; l != NULL; l = l->next) {
4622                 EvViewSelection *selection = (EvViewSelection *)l->data;
4623                 char *tmp;
4624
4625                 tmp = ev_document_get_text (ev_view->document,
4626                                             selection->page,
4627                                             &selection->rect);
4628                 g_string_append (text, tmp);
4629                 g_free (tmp);
4630         }
4631
4632         ev_document_doc_mutex_unlock ();
4633
4634         return g_string_free (text, FALSE);
4635 }
4636
4637 void
4638 ev_view_copy (EvView *ev_view)
4639 {
4640         GtkClipboard *clipboard;
4641         char *text;
4642
4643         if (!ev_document_can_get_text (ev_view->document)) {
4644                 return;
4645         }
4646
4647         text = get_selected_text (ev_view);
4648         clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view),
4649                                               GDK_SELECTION_CLIPBOARD);
4650         gtk_clipboard_set_text (clipboard, text, -1);
4651         g_free (text);
4652 }
4653
4654 static void
4655 ev_view_primary_get_cb (GtkClipboard     *clipboard,
4656                         GtkSelectionData *selection_data,
4657                         guint             info,
4658                         gpointer          data)
4659 {
4660         EvView *ev_view = EV_VIEW (data);
4661         char *text;
4662
4663         if (!ev_document_can_get_text (ev_view->document)) {
4664                 return;
4665         }
4666
4667         text = get_selected_text (ev_view);
4668         gtk_selection_data_set_text (selection_data, text, -1);
4669         g_free (text);
4670 }
4671
4672 static void
4673 ev_view_primary_clear_cb (GtkClipboard *clipboard,
4674                           gpointer      data)
4675 {
4676         EvView *view = EV_VIEW (data);
4677
4678         clear_selection (view);
4679 }
4680
4681 static void
4682 ev_view_update_primary_selection (EvView *ev_view)
4683 {
4684         GtkClipboard *clipboard;
4685
4686         clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view),
4687                                               GDK_SELECTION_PRIMARY);
4688
4689         if (ev_view->selection_info.selections) {
4690                 if (!gtk_clipboard_set_with_owner (clipboard,
4691                                                    clipboard_targets,
4692                                                    G_N_ELEMENTS (clipboard_targets),
4693                                                    ev_view_primary_get_cb,
4694                                                    ev_view_primary_clear_cb,
4695                                                    G_OBJECT (ev_view)))
4696                         ev_view_primary_clear_cb (clipboard, ev_view);
4697         } else {
4698                 if (gtk_clipboard_get_owner (clipboard) == G_OBJECT (ev_view))
4699                         gtk_clipboard_clear (clipboard);
4700         }
4701 }
4702
4703 /*** Cursor operations ***/
4704
4705 static GdkCursor *
4706 ev_view_create_invisible_cursor(void)
4707 {
4708        GdkBitmap *empty;
4709        GdkColor black = { 0, 0, 0, 0 };
4710        static char bits[] = { 0x00 };
4711
4712        empty = gdk_bitmap_create_from_data (NULL, bits, 1, 1);
4713
4714        return gdk_cursor_new_from_pixmap (empty, empty, &black, &black, 0, 0);
4715 }
4716
4717 static void
4718 ev_view_set_cursor (EvView *view, EvViewCursor new_cursor)
4719 {
4720         GdkCursor *cursor = NULL;
4721         GdkDisplay *display;
4722         GtkWidget *widget;
4723
4724         if (view->cursor == new_cursor) {
4725                 return;
4726         }
4727
4728         widget = gtk_widget_get_toplevel (GTK_WIDGET (view));
4729         display = gtk_widget_get_display (widget);
4730         view->cursor = new_cursor;
4731
4732         switch (new_cursor) {
4733                 case EV_VIEW_CURSOR_NORMAL:
4734                         gdk_window_set_cursor (widget->window, NULL);
4735                         break;
4736                 case EV_VIEW_CURSOR_IBEAM:
4737                         cursor = gdk_cursor_new_for_display (display, GDK_XTERM);
4738                         break;
4739                 case EV_VIEW_CURSOR_LINK:
4740                         cursor = gdk_cursor_new_for_display (display, GDK_HAND2);
4741                         break;
4742                 case EV_VIEW_CURSOR_WAIT:
4743                         cursor = gdk_cursor_new_for_display (display, GDK_WATCH);
4744                         break;
4745                 case EV_VIEW_CURSOR_HIDDEN:
4746                         cursor = ev_view_create_invisible_cursor ();
4747                         break;
4748                 case EV_VIEW_CURSOR_DRAG:
4749                         cursor = gdk_cursor_new_for_display (display, GDK_FLEUR);
4750                         break;
4751         }
4752
4753         if (cursor) {
4754                 gdk_window_set_cursor (widget->window, cursor);
4755                 gdk_cursor_unref (cursor);
4756                 gdk_flush();
4757         }
4758 }
4759
4760 void
4761 ev_view_hide_cursor (EvView *view)
4762 {
4763        ev_view_set_cursor (view, EV_VIEW_CURSOR_HIDDEN);
4764 }
4765
4766 void
4767 ev_view_show_cursor (EvView *view)
4768 {
4769        ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
4770 }
4771
4772 static void
4773 ev_view_reset_presentation_state (EvView *view)
4774 {
4775         if (!view->presentation ||
4776             view->presentation_state == EV_PRESENTATION_NORMAL)
4777                 return;
4778
4779         view->presentation_state = EV_PRESENTATION_NORMAL;
4780         gdk_window_set_background (GTK_WIDGET (view)->window,
4781                                    &GTK_WIDGET (view)->style->black);
4782         gtk_widget_queue_draw (GTK_WIDGET (view));
4783 }
4784
4785 gboolean
4786 ev_view_next_page (EvView *view)
4787 {
4788         int page, n_pages;
4789
4790         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
4791
4792         if (!view->page_cache)
4793                 return FALSE;
4794
4795         ev_view_presentation_transition_stop (view);
4796         ev_view_reset_presentation_state (view);
4797
4798         page = ev_page_cache_get_current_page (view->page_cache);
4799         n_pages = ev_page_cache_get_n_pages (view->page_cache);
4800
4801         if (view->dual_page && !view->presentation)
4802                 page = page + 2;
4803         else
4804                 page = page + 1;
4805
4806         if (page < n_pages) {
4807                 ev_page_cache_set_current_page (view->page_cache, page);
4808                 return TRUE;
4809         } else if (view->presentation && page == n_pages) {
4810                 view->presentation_state = EV_PRESENTATION_END;
4811                 gtk_widget_queue_draw (GTK_WIDGET (view));
4812                 return TRUE;
4813         } else if (view->dual_page && page == n_pages) {
4814                 ev_page_cache_set_current_page (view->page_cache, page - 1);
4815                 return TRUE;
4816         } else {
4817                 return FALSE;
4818         }
4819 }
4820
4821 gboolean
4822 ev_view_previous_page (EvView *view)
4823 {
4824         int page;
4825
4826         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
4827
4828         if (!view->page_cache)
4829                 return FALSE;
4830
4831         if (view->presentation &&
4832             view->presentation_state == EV_PRESENTATION_END) {
4833                 ev_view_reset_presentation_state (view);
4834                 return TRUE;
4835         }
4836
4837         ev_view_reset_presentation_state (view);
4838
4839         page = ev_page_cache_get_current_page (view->page_cache);
4840
4841         if (view->dual_page && !view->presentation)
4842                 page = page - 2;
4843         else
4844                 page = page - 1;
4845
4846         if (page >= 0) {
4847                 ev_page_cache_set_current_page (view->page_cache, page);
4848                 return TRUE;
4849         } else if (ev_view_get_dual_page (view) && page == -1) {
4850                 ev_page_cache_set_current_page (view->page_cache, 0);
4851                 return TRUE;
4852         } else {
4853                 return FALSE;
4854         }
4855 }
4856
4857 /*** Enum description for usage in signal ***/
4858
4859 GType
4860 ev_sizing_mode_get_type (void)
4861 {
4862   static GType etype = 0;
4863   if (etype == 0) {
4864     static const GEnumValue values[] = {
4865       { EV_SIZING_FIT_WIDTH, "EV_SIZING_FIT_WIDTH", "fit-width" },
4866       { EV_SIZING_BEST_FIT, "EV_SIZING_BEST_FIT", "best-fit" },
4867       { EV_SIZING_FREE, "EV_SIZING_FREE", "free" },
4868       { 0, NULL, NULL }
4869     };
4870     etype = g_enum_register_static ("EvSizingMode", values);
4871   }
4872   return etype;
4873 }
4874
4875 GType
4876 ev_scroll_type_get_type (void)
4877 {
4878   static GType etype = 0;
4879   if (etype == 0) {
4880     static const GEnumValue values[] = {
4881       { EV_SCROLL_PAGE_FORWARD, "EV_SCROLL_PAGE_FORWARD", "scroll-page-forward" },
4882       { EV_SCROLL_PAGE_BACKWARD, "EV_SCROLL_PAGE_BACKWARD", "scroll-page-backward" },
4883       { EV_SCROLL_STEP_FORWARD, "EV_SCROLL_STEP_FORWARD", "scroll-step-forward" },
4884       { EV_SCROLL_STEP_FORWARD, "EV_SCROLL_STEP_FORWARD", "scroll-step-forward" },
4885       { EV_SCROLL_STEP_UP, "EV_SCROLL_STEP_UP", "scroll-step-up" },
4886       { EV_SCROLL_STEP_DOWN, "EV_SCROLL_STEP_DOWN", "scroll-step-down" },
4887       { 0, NULL, NULL }
4888     };
4889     etype = g_enum_register_static ("EvScrollType", values);
4890   }
4891   return etype;
4892 }