shell/ev-view.c

   1 /* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8; c-indent-level: 8 -*- */
   2 /* this file is part of evince, a gnome document viewer
   3  *
   4  *  Copyright (C) 2004 Red Hat, Inc
   5  *
   6  * Evince is free software; you can redistribute it and/or modify it
   7  * under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * Evince is distributed in the hope that it will be useful, but
  12  * WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
  19  */
  20
  21 #include <stdlib.h>
  22 #include <math.h>
  23 #include <string.h>
  24 #include <gtk/gtkalignment.h>
  25 #include <glib/gi18n.h>
  26 #include <gtk/gtkbindings.h>
  27 #include <gtk/gtkselection.h>
  28 #include <gtk/gtkclipboard.h>
  29 #include <gdk/gdkkeysyms.h>
  30
  31 #include "ev-marshal.h"
  32 #include "ev-view.h"
  33 #include "ev-view-private.h"
  34 #include "ev-utils.h"
  35 #include "ev-selection.h"
  36 #include "ev-document-links.h"
  37 #include "ev-document-images.h"
  38 #include "ev-document-find.h"
  39 #include "ev-document-transition.h"
  40 #include "ev-document-misc.h"
  41 #include "ev-job-queue.h"
  42 #include "ev-page-cache.h"
  43 #include "ev-pixbuf-cache.h"
  44 #include "ev-tooltip.h"
  45 #include "ev-application.h"
  46
  47 #define EV_VIEW_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass), EV_TYPE_VIEW, EvViewClass))
  48 #define EV_IS_VIEW_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), EV_TYPE_VIEW))
  49 #define EV_VIEW_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj), EV_TYPE_VIEW, EvViewClass))
  50
  51
  52 enum {
  53         PROP_0,
  54         PROP_STATUS,
  55         PROP_FIND_STATUS,
  56         PROP_CONTINUOUS,
  57         PROP_DUAL_PAGE,
  58         PROP_FULLSCREEN,
  59         PROP_PRESENTATION,
  60         PROP_SIZING_MODE,
  61         PROP_ZOOM,
  62         PROP_ROTATION,
  63         PROP_HAS_SELECTION,
  64 };
  65
  66 enum {
  67         SIGNAL_BINDING_ACTIVATED,
  68         SIGNAL_ZOOM_INVALID,
  69         SIGNAL_HANDLE_LINK,
  70         SIGNAL_EXTERNAL_LINK,
  71         SIGNAL_POPUP_MENU,
  72         N_SIGNALS,
  73 };
  74
  75 enum {
  76         TARGET_DND_URI,
  77         TARGET_DND_TEXT,
  78         TARGET_DND_IMAGE
  79 };
  80
  81 enum {
  82         TARGET_STRING,
  83         TARGET_TEXT,
  84         TARGET_COMPOUND_TEXT,
  85         TARGET_UTF8_STRING,
  86         TARGET_TEXT_BUFFER_CONTENTS
  87 };
  88
  89 static const GtkTargetEntry clipboard_targets[] = {
  90         { "STRING", 0, TARGET_STRING },
  91         { "TEXT",   0, TARGET_TEXT },
  92         { "COMPOUND_TEXT", 0, TARGET_COMPOUND_TEXT },
  93         { "UTF8_STRING", 0, TARGET_UTF8_STRING },
  94 };
  95
  96 static const GtkTargetEntry view_drop_targets[] = {
  97         { "text/uri-list", 0, 0 }
  98 };
  99
 100 static guint signals[N_SIGNALS];
 101
 102 typedef enum {
 103         EV_VIEW_FIND_NEXT,
 104         EV_VIEW_FIND_PREV
 105 } EvViewFindDirection;
 106
 107 #define ZOOM_IN_FACTOR  1.2
 108 #define ZOOM_OUT_FACTOR (1.0/ZOOM_IN_FACTOR)
 109
 110 #define MIN_SCALE 0.05409
 111 #define MAX_SCALE 4.0
 112
 113 #define SCROLL_TIME 150
 114
 115 /*** Scrolling ***/
 116 static void       scroll_to_current_page                     (EvView *view,
 117                                                               GtkOrientation orientation);
 118 static void       ev_view_set_scroll_adjustments             (EvView             *view,
 119                                                               GtkAdjustment      *hadjustment,
 120                                                               GtkAdjustment      *vadjustment);
 121 static void       view_update_range_and_current_page         (EvView             *view);
 122 static void       set_scroll_adjustment                      (EvView             *view,
 123                                                               GtkOrientation      orientation,
 124                                                               GtkAdjustment      *adjustment);
 125 static void       add_scroll_binding_keypad                  (GtkBindingSet      *binding_set,
 126                                                               guint               keyval,
 127                                                               GdkModifierType modifiers,
 128                                                               EvScrollType       scroll,
 129                                                               gboolean            horizontal);
 130 static void       ensure_rectangle_is_visible                (EvView             *view,
 131                                                               GdkRectangle       *rect);
 132
 133 /*** Geometry computations ***/
 134 static void       compute_border                             (EvView             *view,
 135                                                               int                 width,
 136                                                               int                 height,
 137                                                               GtkBorder          *border);
 138 static void       get_page_y_offset                          (EvView *view,
 139                                                               int page,
 140                                                               double zoom,
 141                                                               int *y_offset);
 142 static gboolean   get_page_extents                           (EvView             *view,
 143                                                               gint                page,
 144                                                               GdkRectangle       *page_area,
 145                                                               GtkBorder          *border);
 146 static void       view_rect_to_doc_rect                      (EvView             *view,
 147                                                               GdkRectangle       *view_rect,
 148                                                               GdkRectangle       *page_area,
 149                                                               EvRectangle        *doc_rect);
 150 static void       doc_rect_to_view_rect                      (EvView             *view,
 151                                                               int                 page,
 152                                                               EvRectangle        *doc_rect,
 153                                                               GdkRectangle       *view_rect);
 154 static void       find_page_at_location                      (EvView             *view,
 155                                                               gdouble             x,
 156                                                               gdouble             y,
 157                                                               gint               *page,
 158                                                               gint               *x_offset,
 159                                                               gint               *y_offset);
 160 static gboolean  doc_point_to_view_point                     (EvView       *view,
 161                                                               int           page,
 162                                                               EvPoint      *doc_point,
 163                                                               GdkPoint     *view_point);
 164 /*** Hyperrefs ***/
 165 static EvLink *   ev_view_get_link_at_location               (EvView  *view,
 166                                                               gdouble  x,
 167                                                               gdouble  y);
 168 static char*      tip_from_link                              (EvView             *view,
 169                                                               EvLink             *link);
 170 static void       handle_link_over_xy                        (EvView *view,
 171                                                               gint x,
 172                                                               gint y);
 173 /*** GtkWidget implementation ***/
 174 static void       ev_view_size_request_continuous_dual_page  (EvView             *view,
 175                                                               GtkRequisition     *requisition);
 176 static void       ev_view_size_request_continuous            (EvView             *view,
 177                                                               GtkRequisition     *requisition);
 178 static void       ev_view_size_request_dual_page             (EvView             *view,
 179                                                               GtkRequisition     *requisition);
 180 static void       ev_view_size_request_single_page           (EvView             *view,
 181                                                               GtkRequisition     *requisition);
 182 static void       ev_view_size_request                       (GtkWidget          *widget,
 183                                                               GtkRequisition     *requisition);
 184 static void       ev_view_size_allocate                      (GtkWidget          *widget,
 185                                                               GtkAllocation      *allocation);
 186 static void       ev_view_realize                            (GtkWidget          *widget);
 187 static gboolean   ev_view_scroll_event                       (GtkWidget          *widget,
 188                                                               GdkEventScroll     *event);
 189 static gboolean   ev_view_expose_event                       (GtkWidget          *widget,
 190                                                               GdkEventExpose     *event);
 191 static gboolean   ev_view_popup_menu                         (GtkWidget          *widget);
 192 static gboolean   ev_view_button_press_event                 (GtkWidget          *widget,
 193                                                               GdkEventButton     *event);
 194 static gboolean   ev_view_motion_notify_event                (GtkWidget          *widget,
 195                                                               GdkEventMotion     *event);
 196 static gboolean   ev_view_button_release_event               (GtkWidget          *widget,
 197                                                               GdkEventButton     *event);
 198 static gboolean   ev_view_enter_notify_event                 (GtkWidget          *widget,
 199                                                               GdkEventCrossing   *event);
 200 static gboolean   ev_view_leave_notify_event                 (GtkWidget          *widget,
 201                                                               GdkEventCrossing   *event);
 202 static void       ev_view_style_set                          (GtkWidget          *widget,
 203                                                               GtkStyle           *old_style);
 204
 205 static AtkObject *ev_view_get_accessible                     (GtkWidget *widget);
 206
 207 /*** Drawing ***/
 208 static guint32    ev_gdk_color_to_rgb                        (const GdkColor     *color);
 209 static void       draw_rubberband                            (GtkWidget          *widget,
 210                                                               GdkWindow          *window,
 211                                                               const GdkRectangle *rect,
 212                                                               guchar              alpha);
 213 static void       highlight_find_results                     (EvView             *view,
 214                                                               int                 page);
 215 static void       draw_one_page                              (EvView             *view,
 216                                                               gint                page,
 217                                                               GdkRectangle       *page_area,
 218                                                               GtkBorder          *border,
 219                                                               GdkRectangle       *expose_area,
 220                                                               gboolean           *page_ready);
 221 static void       draw_loading_text                          (EvView             *view,
 222                                                               GdkRectangle       *page_area,
 223                                                               GdkRectangle       *expose_area);
 224
 225 /*** Callbacks ***/
 226 static void       find_changed_cb                            (EvDocument         *document,
 227                                                               int                 page,
 228                                                               EvView             *view);
 229 static void       job_finished_cb                            (EvPixbufCache      *pixbuf_cache,
 230                                                               EvView             *view);
 231 static void       page_changed_cb                            (EvPageCache        *page_cache,
 232                                                               int                 new_page,
 233                                                               EvView             *view);
 234 static void       on_adjustment_value_changed                (GtkAdjustment      *adjustment,
 235                                                               EvView             *view);
 236
 237 /*** GObject ***/
 238 static void       ev_view_finalize                           (GObject            *object);
 239 static void       ev_view_destroy                            (GtkObject          *object);
 240 static void       ev_view_set_property                       (GObject            *object,
 241                                                               guint               prop_id,
 242                                                               const GValue       *value,
 243                                                               GParamSpec         *pspec);
 244 static void       ev_view_get_property                       (GObject            *object,
 245                                                               guint               prop_id,
 246                                                               GValue             *value,
 247                                                               GParamSpec         *pspec);
 248 static void       ev_view_class_init                         (EvViewClass        *class);
 249 static void       ev_view_init                               (EvView             *view);
 250
 251 /*** Zoom and sizing ***/
 252 static double   zoom_for_size_fit_width                      (int doc_width,
 253                                                               int doc_height,
 254                                                               int target_width,
 255                                                               int target_height,
 256                                                               int vsb_width);
 257 static double   zoom_for_size_fit_height                     (int doc_width,
 258                                                               int doc_height,
 259                                                               int target_width,
 260                                                               int target_height,
 261                                                               int vsb_height);
 262 static double   zoom_for_size_best_fit                       (int doc_width,
 263                                                               int doc_height,
 264                                                               int target_width,
 265                                                               int target_height,
 266                                                               int vsb_width,
 267                                                               int hsb_width);
 268 static void     ev_view_zoom_for_size_presentation           (EvView *view,
 269                                                               int     width,
 270                                                               int     height);
 271 static void     ev_view_zoom_for_size_continuous_and_dual_page (EvView *view,
 272                                                                 int     width,
 273                                                                 int     height,
 274                                                                 int     vsb_width,
 275                                                                 int     hsb_height);
 276 static void     ev_view_zoom_for_size_continuous               (EvView *view,
 277                                                                 int     width,
 278                                                                 int     height,
 279                                                                 int     vsb_width,
 280                                                                 int     hsb_height);
 281 static void     ev_view_zoom_for_size_dual_page                (EvView *view,
 282                                                                 int     width,
 283                                                                 int     height,
 284                                                                 int     vsb_width,
 285                                                                 int     hsb_height);
 286 static void     ev_view_zoom_for_size_single_page              (EvView *view,
 287                                                                 int     width,
 288                                                                 int     height,
 289                                                                 int     vsb_width,
 290                                                                 int     hsb_height);
 291 /*** Cursors ***/
 292 static GdkCursor* ev_view_create_invisible_cursor            (void);
 293 static void       ev_view_set_cursor                         (EvView             *view,
 294                                                               EvViewCursor        new_cursor);
 295
 296 /*** Status messages ***/
 297 static void       ev_view_set_status                         (EvView             *view,
 298                                                               const char         *message);
 299 static void       update_find_status_message                 (EvView             *view,
 300                                                               gboolean            this_page);
 301 static void       ev_view_set_find_status                    (EvView             *view,
 302                                                               const char         *message);
 303 /*** Find ***/
 304 static void       jump_to_find_result                        (EvView             *view);
 305 static void       jump_to_find_page                          (EvView             *view,
 306                                                               EvViewFindDirection direction,
 307                                                               gint                shift);
 308
 309 /*** Selection ***/
 310 static void       compute_selections                         (EvView             *view,
 311                                                               GdkPoint           *start,
 312                                                               GdkPoint           *stop);
 313 static void       clear_selection                            (EvView             *view);
 314 static void       selection_free                             (EvViewSelection    *selection);
 315 static char*      get_selected_text                          (EvView             *ev_view);
 316 static void       ev_view_primary_get_cb                     (GtkClipboard       *clipboard,
 317                                                               GtkSelectionData   *selection_data,
 318                                                               guint               info,
 319                                                               gpointer            data);
 320 static void       ev_view_primary_clear_cb                   (GtkClipboard       *clipboard,
 321                                                               gpointer            data);
 322 static void       ev_view_update_primary_selection           (EvView             *ev_view);
 323
 324 /*** Presentation ***/
 325 static void       ev_view_presentation_transition_start      (EvView             *ev_view);
 326 static void       ev_view_presentation_transition_stop       (EvView             *ev_view);
 327
 328
 329 G_DEFINE_TYPE (EvView, ev_view, GTK_TYPE_WIDGET)
 330
 331 static void
 332 scroll_to_current_page (EvView *view, GtkOrientation orientation)
 333 {
 334         GdkPoint view_point;
 335
 336         if (view->document == NULL) {
 337                 return;
 338         }
 339
 340         doc_point_to_view_point (view, view->current_page, &view->pending_point, &view_point);
 341
 342         if (orientation == GTK_ORIENTATION_VERTICAL) {
 343                 view->pending_point.y = 0;
 344         } else {
 345                 view->pending_point.x = 0;
 346         }
 347
 348         if (orientation == GTK_ORIENTATION_VERTICAL) {
 349                 if (view->continuous) {
 350                         gtk_adjustment_clamp_page (view->vadjustment,
 351                                                    view_point.y - view->spacing / 2,
 352                                                    view_point.y + view->vadjustment->page_size);
 353                 } else {
 354                         gtk_adjustment_set_value (view->vadjustment,
 355                                                   CLAMP (view_point.y,
 356                                                   view->vadjustment->lower,
 357                                                   view->vadjustment->upper -
 358                                                   view->vadjustment->page_size));
 359                 }
 360         } else {
 361                 if (view->dual_page) {
 362                         gtk_adjustment_clamp_page (view->hadjustment,
 363                                                    view_point.x,
 364                                                    view_point.x + view->hadjustment->page_size);
 365                 } else {
 366                         gtk_adjustment_set_value (view->hadjustment,
 367                                                   CLAMP (view_point.x,
 368                                                   view->hadjustment->lower,
 369                                                   view->hadjustment->upper -
 370                                                   view->hadjustment->page_size));
 371                 }
 372         }
 373 }
 374
 375 static void
 376 view_set_adjustment_values (EvView         *view,
 377                             GtkOrientation  orientation)
 378 {
 379         GtkWidget *widget = GTK_WIDGET (view);
 380         GtkAdjustment *adjustment;
 381         int requisition;
 382         int allocation;
 383
 384         double factor;
 385         gint new_value;
 386
 387         if (orientation == GTK_ORIENTATION_HORIZONTAL)  {
 388                 requisition = widget->requisition.width;
 389                 allocation = widget->allocation.width;
 390                 adjustment = view->hadjustment;
 391         } else {
 392                 requisition = widget->requisition.height;
 393                 allocation = widget->allocation.height;
 394                 adjustment = view->vadjustment;
 395         }
 396
 397         if (!adjustment)
 398                 return;
 399
 400         factor = 1.0;
 401         switch (view->pending_scroll) {
 402                 case SCROLL_TO_KEEP_POSITION:
 403                 case SCROLL_TO_FIND_LOCATION:
 404                         factor = (adjustment->value) / adjustment->upper;
 405                         break;
 406                 case SCROLL_TO_PAGE_POSITION:
 407                         break;
 408                 case SCROLL_TO_CENTER:
 409                         factor = (adjustment->value + adjustment->page_size * 0.5) / adjustment->upper;
 410                         break;
 411         }
 412
 413         adjustment->page_size = allocation;
 414         adjustment->step_increment = allocation * 0.1;
 415         adjustment->page_increment = allocation * 0.9;
 416         adjustment->lower = 0;
 417         adjustment->upper = MAX (allocation, requisition);
 418
 419         /*
 420          * We add 0.5 to the values before to average out our rounding errors.
 421          */
 422         switch (view->pending_scroll) {
 423                 case SCROLL_TO_KEEP_POSITION:
 424                 case SCROLL_TO_FIND_LOCATION:
 425                         new_value = CLAMP (adjustment->upper * factor + 0.5, 0, adjustment->upper - adjustment->page_size);
 426                         gtk_adjustment_set_value (adjustment, (int)new_value);
 427                         break;
 428                 case SCROLL_TO_PAGE_POSITION:
 429                         scroll_to_current_page (view, orientation);
 430                         break;
 431                 case SCROLL_TO_CENTER:
 432                         new_value = CLAMP (adjustment->upper * factor - adjustment->page_size * 0.5 + 0.5,
 433                                            0, adjustment->upper - adjustment->page_size);
 434                         gtk_adjustment_set_value (adjustment, (int)new_value);
 435                         break;
 436         }
 437
 438         gtk_adjustment_changed (adjustment);
 439 }
 440
 441 static void
 442 view_update_range_and_current_page (EvView *view)
 443 {
 444         gint current_page;
 445         gint best_current_page = -1;
 446
 447         /* Presentation trumps all other modes */
 448         if (view->presentation) {
 449                 view->start_page = view->current_page;
 450                 view->end_page = view->current_page;
 451         } else if (view->continuous) {
 452                 GdkRectangle current_area, unused, page_area;
 453                 GtkBorder border;
 454                 gboolean found = FALSE;
 455                 gint area_max = -1, area;
 456                 int i;
 457
 458                 if (!(view->vadjustment && view->hadjustment))
 459                         return;
 460
 461                 current_area.x = view->hadjustment->value;
 462                 current_area.width = view->hadjustment->upper;
 463                 current_area.y = view->vadjustment->value;
 464                 current_area.height = view->vadjustment->page_size;
 465
 466                 for (i = 0; i < ev_page_cache_get_n_pages (view->page_cache); i++) {
 467
 468                         get_page_extents (view, i, &page_area, &border);
 469
 470                         if (gdk_rectangle_intersect (&current_area, &page_area, &unused)) {
 471                                 area = unused.width * unused.height;
 472
 473                                 if (!found) {
 474                                         area_max = area;
 475                                         view->start_page = i;
 476                                         found = TRUE;
 477                                         best_current_page = i;
 478                                 }
 479                                 if (area > area_max) {
 480                                         best_current_page = (area == area_max) ? MIN (i, best_current_page) : i;
 481                                         area_max = area;
 482                                 }
 483
 484                                 view->end_page = i;
 485                         } else if (found) {
 486                                 break;
 487                         }
 488                 }
 489
 490         } else if (view->dual_page) {
 491                 if (view->current_page % 2 == ev_page_cache_get_dual_even_left (view->page_cache)) {
 492                         view->start_page = view->current_page;
 493                         if (view->current_page + 1 < ev_page_cache_get_n_pages (view->page_cache))
 494                                 view->end_page = view->start_page + 1;
 495                         else
 496                                 view->end_page = view->start_page;
 497                 } else {
 498                         if (view->current_page < 1)
 499                                 view->start_page = view->current_page;
 500                         else
 501                                 view->start_page = view->current_page - 1;
 502                         view->end_page = view->current_page;
 503                 }
 504         } else {
 505                 view->start_page = view->current_page;
 506                 view->end_page = view->current_page;
 507         }
 508
 509         best_current_page = MAX (best_current_page, view->start_page);
 510         current_page = ev_page_cache_get_current_page (view->page_cache);
 511
 512         if ((current_page != best_current_page) && (view->pending_scroll == SCROLL_TO_KEEP_POSITION)) {
 513                 view->current_page = best_current_page;
 514                 ev_page_cache_set_current_page (view->page_cache, best_current_page);
 515         }
 516
 517         ev_pixbuf_cache_set_page_range (view->pixbuf_cache,
 518                                         view->start_page,
 519                                         view->end_page,
 520                                         view->rotation,
 521                                         view->scale,
 522                                         view->selection_info.selections);
 523 }
 524
 525 static void
 526 set_scroll_adjustment (EvView *view,
 527                        GtkOrientation  orientation,
 528                        GtkAdjustment  *adjustment)
 529 {
 530         GtkAdjustment **to_set;
 531
 532         if (orientation == GTK_ORIENTATION_HORIZONTAL)
 533                 to_set = &view->hadjustment;
 534         else
 535                 to_set = &view->vadjustment;
 536
 537         if (*to_set != adjustment) {
 538                 if (*to_set) {
 539                         g_signal_handlers_disconnect_by_func (*to_set,
 540                                                               (gpointer) on_adjustment_value_changed,
 541                                                               view);
 542                         g_object_unref (*to_set);
 543                 }
 544
 545                 *to_set = adjustment;
 546                 view_set_adjustment_values (view, orientation);
 547
 548                 if (*to_set) {
 549                         g_object_ref (*to_set);
 550                         g_signal_connect (*to_set, "value_changed",
 551                                           G_CALLBACK (on_adjustment_value_changed), view);
 552                 }
 553         }
 554 }
 555
 556 static void
 557 ev_view_set_scroll_adjustments (EvView *view,
 558                                 GtkAdjustment  *hadjustment,
 559                                 GtkAdjustment  *vadjustment)
 560 {
 561         set_scroll_adjustment (view, GTK_ORIENTATION_HORIZONTAL, hadjustment);
 562         set_scroll_adjustment (view, GTK_ORIENTATION_VERTICAL, vadjustment);
 563
 564         on_adjustment_value_changed (NULL, view);
 565 }
 566
 567 static void
 568 add_scroll_binding_keypad (GtkBindingSet  *binding_set,
 569                            guint           keyval,
 570                            GdkModifierType modifiers,
 571                            EvScrollType    scroll,
 572                            gboolean        horizontal)
 573 {
 574   guint keypad_keyval = keyval - GDK_Left + GDK_KP_Left;
 575
 576   gtk_binding_entry_add_signal (binding_set, keyval, modifiers,
 577                                 "binding_activated", 2,
 578                                 EV_TYPE_SCROLL_TYPE, scroll,
 579                                 G_TYPE_BOOLEAN, horizontal);
 580   gtk_binding_entry_add_signal (binding_set, keypad_keyval, modifiers,
 581                                 "binding_activated", 2,
 582                                 EV_TYPE_SCROLL_TYPE, scroll,
 583                                 G_TYPE_BOOLEAN, horizontal);
 584 }
 585
 586 void
 587 ev_view_scroll (EvView        *view,
 588                 EvScrollType   scroll,
 589                 gboolean horizontal)
 590 {
 591         GtkAdjustment *adjustment;
 592         double value, increment;
 593         gboolean first_page = FALSE;
 594         gboolean last_page = FALSE;
 595
 596         view->jump_to_find_result = FALSE;
 597
 598         if (view->presentation || view->sizing_mode == EV_SIZING_BEST_FIT) {
 599                 switch (scroll) {
 600                         case EV_SCROLL_PAGE_BACKWARD:
 601                         case EV_SCROLL_STEP_BACKWARD:
 602                                 ev_view_previous_page (view);
 603                                 break;
 604                         case EV_SCROLL_PAGE_FORWARD:
 605                         case EV_SCROLL_STEP_FORWARD:
 606                                 ev_view_next_page (view);
 607                                 break;
 608                         default:
 609                                 break;
 610                 }
 611                 return;
 612         }
 613
 614         /* Assign values for increment and vertical adjustment */
 615         adjustment = horizontal ? view->hadjustment : view->vadjustment;
 616         increment = adjustment->page_size * 0.75;
 617         value = adjustment->value;
 618
 619         /* Assign boolean for first and last page */
 620         if (view->current_page == 0)
 621                 first_page = TRUE;
 622         if (view->current_page == ev_page_cache_get_n_pages (view->page_cache) - 1)
 623                 last_page = TRUE;
 624
 625         switch (scroll) {
 626                 case EV_SCROLL_PAGE_BACKWARD:
 627                         /* Do not jump backwards if at the first page */
 628                         if (value == (adjustment->lower) && first_page) {
 629                                 /* Do nothing */
 630                                 /* At the top of a page, assign the upper bound limit of previous page */
 631                         } else if (value == (adjustment->lower)) {
 632                                 value = adjustment->upper - adjustment->page_size;
 633                                 ev_view_previous_page (view);
 634                                 /* Jump to the top */
 635                         } else {
 636                                 value = MAX (value - increment, adjustment->lower);
 637                         }
 638                         break;
 639                 case EV_SCROLL_PAGE_FORWARD:
 640                         /* Do not jump forward if at the last page */
 641                         if (value == (adjustment->upper - adjustment->page_size) && last_page) {
 642                                 /* Do nothing */
 643                         /* At the bottom of a page, assign the lower bound limit of next page */
 644                         } else if (value == (adjustment->upper - adjustment->page_size)) {
 645                                 value = 0;
 646                                 ev_view_next_page (view);
 647                         /* Jump to the bottom */
 648                         } else {
 649                                 value = MIN (value + increment, adjustment->upper - adjustment->page_size);
 650                         }
 651                         break;
 652                 case EV_SCROLL_STEP_BACKWARD:
 653                         value -= adjustment->step_increment;
 654                         break;
 655                 case EV_SCROLL_STEP_FORWARD:
 656                         value += adjustment->step_increment;
 657                         break;
 658                 case EV_SCROLL_STEP_DOWN:
 659                         value -= adjustment->step_increment / 10;
 660                         break;
 661                 case EV_SCROLL_STEP_UP:
 662                         value += adjustment->step_increment / 10;
 663                         break;
 664                 default:
 665                         break;
 666         }
 667
 668         value = CLAMP (value, adjustment->lower,
 669                        adjustment->upper - adjustment->page_size);
 670
 671         gtk_adjustment_set_value (adjustment, value);
 672 }
 673
 674 #define MARGIN 5
 675
 676 static void
 677 ensure_rectangle_is_visible (EvView *view, GdkRectangle *rect)
 678 {
 679         GtkWidget *widget = GTK_WIDGET (view);
 680         GtkAdjustment *adjustment;
 681         int value;
 682
 683         view->pending_scroll = SCROLL_TO_FIND_LOCATION;
 684
 685         adjustment = view->vadjustment;
 686
 687         if (rect->y < adjustment->value) {
 688                 value = MAX (adjustment->lower, rect->y - MARGIN);
 689                 gtk_adjustment_set_value (view->vadjustment, value);
 690         } else if (rect->y + rect->height >
 691                    adjustment->value + widget->allocation.height) {
 692                 value = MIN (adjustment->upper, rect->y + rect->height -
 693                              widget->allocation.height + MARGIN);
 694                 gtk_adjustment_set_value (view->vadjustment, value);
 695         }
 696
 697         adjustment = view->hadjustment;
 698
 699         if (rect->x < adjustment->value) {
 700                 value = MAX (adjustment->lower, rect->x - MARGIN);
 701                 gtk_adjustment_set_value (view->hadjustment, value);
 702         } else if (rect->x + rect->height >
 703                    adjustment->value + widget->allocation.width) {
 704                 value = MIN (adjustment->upper, rect->x + rect->width -
 705                              widget->allocation.width + MARGIN);
 706                 gtk_adjustment_set_value (view->hadjustment, value);
 707         }
 708
 709         gtk_widget_queue_resize (GTK_WIDGET (view));
 710 }
 711
 712 /*** Geometry computations ***/
 713
 714 static void
 715 compute_border (EvView *view, int width, int height, GtkBorder *border)
 716 {
 717         if (view->presentation) {
 718                 border->left = 0;
 719                 border->right = 0;
 720                 border->top = 0;
 721                 border->bottom = 0;
 722         } else {
 723                 ev_document_misc_get_page_border_size (width, height, border);
 724         }
 725 }
 726
 727 static void
 728 get_page_y_offset (EvView *view, int page, double zoom, int *y_offset)
 729 {
 730         int max_width, offset;
 731         GtkBorder border;
 732
 733         g_return_if_fail (y_offset != NULL);
 734
 735         ev_page_cache_get_max_width (view->page_cache, view->rotation, zoom, &max_width);
 736
 737         compute_border (view, max_width, max_width, &border);
 738
 739         if (view->dual_page) {
 740                 ev_page_cache_get_height_to_page (view->page_cache, page,
 741                                                   view->rotation, zoom, NULL, &offset);
 742                 offset += ((page + ev_page_cache_get_dual_even_left (view->page_cache)) / 2 + 1) * view->spacing + ((page + ev_page_cache_get_dual_even_left (view->page_cache)) / 2 ) * (border.top + border.bottom);
 743         } else {
 744                 ev_page_cache_get_height_to_page (view->page_cache, page,
 745                                                   view->rotation, zoom, &offset, NULL);
 746                 offset += (page + 1) * view->spacing + page * (border.top + border.bottom);
 747         }
 748
 749         *y_offset = offset;
 750         return;
 751 }
 752
 753 static gboolean
 754 get_page_extents (EvView       *view,
 755                   gint          page,
 756                   GdkRectangle *page_area,
 757                   GtkBorder    *border)
 758 {
 759         GtkWidget *widget;
 760         int width, height;
 761
 762         widget = GTK_WIDGET (view);
 763
 764         /* Get the size of the page */
 765         ev_page_cache_get_size (view->page_cache, page,
 766                                 view->rotation,
 767                                 view->scale,
 768                                 &width, &height);
 769         compute_border (view, width, height, border);
 770         page_area->width = width + border->left + border->right;
 771         page_area->height = height + border->top + border->bottom;
 772
 773         if (view->presentation) {
 774                 page_area->x = (MAX (0, widget->allocation.width - width))/2;
 775                 page_area->y = (MAX (0, widget->allocation.height - height))/2;
 776         } else if (view->continuous) {
 777                 gint max_width;
 778                 gint x, y;
 779
 780                 ev_page_cache_get_max_width (view->page_cache, view->rotation,
 781                                              view->scale, &max_width);
 782                 max_width = max_width + border->left + border->right;
 783                 /* Get the location of the bounding box */
 784                 if (view->dual_page) {
 785                         x = view->spacing + ((page % 2 == ev_page_cache_get_dual_even_left (view->page_cache)) ? 0 : 1) * (max_width + view->spacing);
 786                         x = x + MAX (0, widget->allocation.width - (max_width * 2 + view->spacing * 3)) / 2;
 787                         if (page % 2 == ev_page_cache_get_dual_even_left (view->page_cache))
 788                                 x = x + (max_width - width - border->left - border->right);
 789                 } else {
 790                         x = view->spacing;
 791                         x = x + MAX (0, widget->allocation.width - (width + view->spacing * 2)) / 2;
 792                 }
 793
 794                 get_page_y_offset (view, page, view->scale, &y);
 795
 796                 page_area->x = x;
 797                 page_area->y = y;
 798         } else {
 799                 gint x, y;
 800                 if (view->dual_page) {
 801                         gint width_2, height_2;
 802                         gint max_width = width;
 803                         gint max_height = height;
 804                         GtkBorder overall_border;
 805                         gint other_page;
 806
 807                         other_page = (page % 2 == ev_page_cache_get_dual_even_left (view->page_cache)) ? page + 1: page - 1;
 808
 809                         /* First, we get the bounding box of the two pages */
 810                         if (other_page < ev_page_cache_get_n_pages (view->page_cache)
 811                             && (0 <= other_page)) {
 812                                 ev_page_cache_get_size (view->page_cache,
 813                                                         other_page,
 814                                                         view->rotation,
 815                                                         view->scale,
 816                                                         &width_2, &height_2);
 817                                 if (width_2 > width)
 818                                         max_width = width_2;
 819                                 if (height_2 > height)
 820                                         max_height = height_2;
 821                         }
 822                         compute_border (view, max_width, max_height, &overall_border);
 823
 824                         /* Find the offsets */
 825                         x = view->spacing;
 826                         y = view->spacing;
 827
 828                         /* Adjust for being the left or right page */
 829                         if (page % 2 == ev_page_cache_get_dual_even_left (view->page_cache))
 830                                 x = x + max_width - width;
 831                         else
 832                                 x = x + (max_width + overall_border.left + overall_border.right) + view->spacing;
 833
 834                         y = y + (max_height - height)/2;
 835
 836                         /* Adjust for extra allocation */
 837                         x = x + MAX (0, widget->allocation.width -
 838                                      ((max_width + overall_border.left + overall_border.right) * 2 + view->spacing * 3))/2;
 839                         y = y + MAX (0, widget->allocation.height - (height + view->spacing * 2))/2;
 840                 } else {
 841                         x = view->spacing;
 842                         y = view->spacing;
 843
 844                         /* Adjust for extra allocation */
 845                         x = x + MAX (0, widget->allocation.width - (width + border->left + border->right + view->spacing * 2))/2;
 846                         y = y + MAX (0, widget->allocation.height - (height + border->top + border->bottom +  view->spacing * 2))/2;
 847                 }
 848
 849                 page_area->x = x;
 850                 page_area->y = y;
 851         }
 852
 853         return TRUE;
 854 }
 855
 856 static void
 857 view_point_to_doc_point (EvView *view,
 858                          GdkPoint *view_point,
 859                          GdkRectangle *page_area,
 860                          double  *doc_point_x,
 861                          double  *doc_point_y)
 862 {
 863         *doc_point_x = (double) (view_point->x - page_area->x) / view->scale;
 864         *doc_point_y = (double) (view_point->y - page_area->y) / view->scale;
 865 }
 866
 867 static void
 868 view_rect_to_doc_rect (EvView *view,
 869                        GdkRectangle *view_rect,
 870                        GdkRectangle *page_area,
 871                        EvRectangle  *doc_rect)
 872 {
 873         doc_rect->x1 = (double) (view_rect->x - page_area->x) / view->scale;
 874         doc_rect->y1 = (double) (view_rect->y - page_area->y) / view->scale;
 875         doc_rect->x2 = doc_rect->x1 + (double) view_rect->width / view->scale;
 876         doc_rect->y2 = doc_rect->y1 + (double) view_rect->height / view->scale;
 877 }
 878
 879 static gboolean
 880 doc_point_to_view_point (EvView       *view,
 881                          int           page,
 882                          EvPoint      *doc_point,
 883                          GdkPoint     *view_point)
 884 {
 885         GdkRectangle page_area;
 886         GtkBorder border;
 887         double x, y, view_x, view_y;
 888         int width, height;
 889
 890         ev_page_cache_get_size (view->page_cache, page,
 891                                 view->rotation,
 892                                 1.0,
 893                                 &width, &height);
 894
 895         if (view->rotation == 0) {
 896                 x = doc_point->x;
 897                 y = doc_point->y;
 898         } else if (view->rotation == 90) {
 899                 x = width - doc_point->y;
 900                 y = doc_point->x;
 901         } else if (view->rotation == 180) {
 902                 x = width - doc_point->x;
 903                 y = height - doc_point->y;
 904         } else if (view->rotation == 270) {
 905                 x = doc_point->y;
 906                 y = height - doc_point->x;
 907         } else {
 908                 g_assert_not_reached ();
 909         }
 910
 911         get_page_extents (view, page, &page_area, &border);
 912
 913         view_x = x * view->scale;
 914         view_y = y * view->scale;
 915         view_point->x = view_x + page_area.x;
 916         view_point->y = view_y + page_area.y;
 917
 918         return (view_x > 0 && view_x <= page_area.width &&
 919                 view_y > 0 && view_y <= page_area.height);
 920 }
 921
 922 static void
 923 doc_rect_to_view_rect (EvView       *view,
 924                        int           page,
 925                        EvRectangle  *doc_rect,
 926                        GdkRectangle *view_rect)
 927 {
 928         GdkRectangle page_area;
 929         GtkBorder border;
 930         double x, y, w, h;
 931         int width, height;
 932
 933         ev_page_cache_get_size (view->page_cache, page,
 934                                 view->rotation,
 935                                 1.0,
 936                                 &width, &height);
 937
 938         if (view->rotation == 0) {
 939                 x = doc_rect->x1;
 940                 y = doc_rect->y1;
 941                 w = doc_rect->x2 - doc_rect->x1;
 942                 h = doc_rect->y2 - doc_rect->y1;
 943         } else if (view->rotation == 90) {
 944                 x = width - doc_rect->y2;
 945                 y = doc_rect->x1;
 946                 w = doc_rect->y2 - doc_rect->y1;
 947                 h = doc_rect->x2 - doc_rect->x1;
 948         } else if (view->rotation == 180) {
 949                 x = width - doc_rect->x2;
 950                 y = height - doc_rect->y2;
 951                 w = doc_rect->x2 - doc_rect->x1;
 952                 h = doc_rect->y2 - doc_rect->y1;
 953         } else if (view->rotation == 270) {
 954                 x = doc_rect->y1;
 955                 y = height - doc_rect->x2;
 956                 w = doc_rect->y2 - doc_rect->y1;
 957                 h = doc_rect->x2 - doc_rect->x1;
 958         } else {
 959                 g_assert_not_reached ();
 960         }
 961
 962         get_page_extents (view, page, &page_area, &border);
 963
 964         view_rect->x = x * view->scale + page_area.x;
 965         view_rect->y = y * view->scale + page_area.y;
 966         view_rect->width = w * view->scale;
 967         view_rect->height = h * view->scale;
 968 }
 969
 970 static void
 971 find_page_at_location (EvView  *view,
 972                        gdouble  x,
 973                        gdouble  y,
 974                        gint    *page,
 975                        gint    *x_offset,
 976                        gint    *y_offset)
 977 {
 978         int i;
 979
 980         if (view->document == NULL)
 981                 return;
 982
 983         g_assert (page);
 984         g_assert (x_offset);
 985         g_assert (y_offset);
 986
 987         for (i = view->start_page; i <= view->end_page; i++) {
 988                 GdkRectangle page_area;
 989                 GtkBorder border;
 990
 991                 if (! get_page_extents (view, i, &page_area, &border))
 992                         continue;
 993
 994                 if ((x >= page_area.x + border.left) &&
 995                     (x < page_area.x + page_area.width - border.right) &&
 996                     (y >= page_area.y + border.top) &&
 997                     (y < page_area.y + page_area.height - border.bottom)) {
 998                         *page = i;
 999                         *x_offset = x - (page_area.x + border.left);
1000                         *y_offset = y - (page_area.y + border.top);
1001                         return;
1002                 }
1003         }
1004
1005         *page = -1;
1006 }
1007
1008 static gboolean
1009 location_in_text (EvView  *view,
1010                   gdouble  x,
1011                   gdouble  y)
1012 {
1013         GdkRegion *region;
1014         gint page = -1;
1015         gint x_offset = 0, y_offset = 0;
1016
1017         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1018
1019         if (page == -1)
1020                 return FALSE;
1021
1022         region = ev_pixbuf_cache_get_text_mapping (view->pixbuf_cache, page);
1023
1024         if (region)
1025                 return gdk_region_point_in (region, x_offset / view->scale, y_offset / view->scale);
1026         else
1027                 return FALSE;
1028 }
1029
1030 static int
1031 ev_view_get_width (EvView *view)
1032 {
1033         return GTK_WIDGET (view)->allocation.width;
1034 }
1035
1036 static int
1037 ev_view_get_height (EvView *view)
1038 {
1039         return GTK_WIDGET (view)->allocation.height;
1040 }
1041
1042 static gboolean
1043 location_in_selected_text (EvView  *view,
1044                            gdouble  x,
1045                            gdouble  y)
1046 {
1047         gint page = -1;
1048         gint x_offset = 0, y_offset = 0;
1049         EvViewSelection *selection;
1050         GList *l = NULL;
1051
1052         for (l = view->selection_info.selections; l != NULL; l = l->next) {
1053                 selection = (EvViewSelection *)l->data;
1054
1055                 find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1056
1057                 if (page != selection->page)
1058                         continue;
1059
1060                 if (selection->covered_region &&
1061                     gdk_region_point_in (selection->covered_region, x_offset, y_offset))
1062                         return TRUE;
1063         }
1064
1065         return FALSE;
1066 }
1067
1068 static gboolean
1069 get_doc_point_from_offset (EvView *view,
1070                            gint    page,
1071                            gint    x_offset,
1072                            gint    y_offset,
1073                            gint   *x_new,
1074                            gint   *y_new)
1075 {
1076         int width, height;
1077         double x, y;
1078
1079         ev_page_cache_get_size (view->page_cache, page,
1080                                 view->rotation,
1081                                 1.0,
1082                                 &width, &height);
1083
1084         x_offset = x_offset / view->scale;
1085         y_offset = y_offset / view->scale;
1086
1087         if (view->rotation == 0) {
1088                 x = x_offset;
1089                 y = y_offset;
1090         } else if (view->rotation == 90) {
1091                 x = y_offset;
1092                 y = width - x_offset;
1093         } else if (view->rotation == 180) {
1094                 x = width - x_offset;
1095                 y = height - y_offset;
1096         } else if (view->rotation == 270) {
1097                 x = height - y_offset;
1098                 y = x_offset;
1099         } else {
1100                 g_assert_not_reached ();
1101         }
1102
1103         *x_new = x;
1104         *y_new = y;
1105
1106         return TRUE;
1107 }
1108
1109 /*** Hyperref ***/
1110 static EvLink *
1111 ev_view_get_link_at_location (EvView  *view,
1112                               gdouble  x,
1113                               gdouble  y)
1114 {
1115         gint page = -1;
1116         gint x_offset = 0, y_offset = 0;
1117         gint x_new = 0, y_new = 0;
1118         GList *link_mapping;
1119
1120         if (!EV_IS_DOCUMENT_LINKS (view->document))
1121                 return NULL;
1122
1123         x += view->scroll_x;
1124         y += view->scroll_y;
1125
1126         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1127
1128         if (page == -1)
1129                 return NULL;
1130
1131
1132         if (get_doc_point_from_offset (view, page, x_offset,
1133                                        y_offset, &x_new, &y_new) == FALSE)
1134                 return NULL;
1135
1136         link_mapping = ev_pixbuf_cache_get_link_mapping (view->pixbuf_cache, page);
1137
1138         if (link_mapping)
1139                 return ev_link_mapping_find (link_mapping, x_new, y_new);
1140         else
1141                 return NULL;
1142 }
1143
1144 static void
1145 goto_fitr_dest (EvView *view, EvLinkDest *dest)
1146 {
1147         EvPoint doc_point;
1148         double zoom;
1149
1150         zoom = zoom_for_size_best_fit (ev_link_dest_get_right (dest) - ev_link_dest_get_left (dest),
1151                                        ev_link_dest_get_bottom (dest) - ev_link_dest_get_top (dest),
1152                                        ev_view_get_width (view),
1153                                        ev_view_get_height (view), 0, 0);
1154
1155         ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1156         ev_view_set_zoom (view, zoom, FALSE);
1157
1158         doc_point.x = ev_link_dest_get_left (dest);
1159         doc_point.y = ev_link_dest_get_top (dest);
1160
1161         view->current_page = ev_link_dest_get_page (dest);
1162         view->pending_point = doc_point;
1163         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1164
1165         gtk_widget_queue_resize (GTK_WIDGET (view));
1166 }
1167
1168 static void
1169 goto_fitv_dest (EvView *view, EvLinkDest *dest)
1170 {
1171         EvPoint doc_point;
1172         int doc_width, doc_height, page;
1173         double zoom;
1174
1175         page = ev_link_dest_get_page (dest);
1176         ev_page_cache_get_size (view->page_cache, page, 0, 1.0, &doc_width, &doc_height);
1177
1178         doc_point.x = ev_link_dest_get_left (dest);
1179         doc_point.y = 0;
1180
1181         zoom = zoom_for_size_fit_height (doc_width - doc_point.x , doc_height,
1182                                          ev_view_get_width (view),
1183                                          ev_view_get_height (view), 0);
1184
1185         ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1186         ev_view_set_zoom (view, zoom, FALSE);
1187
1188         view->current_page = page;
1189         view->pending_point = doc_point;
1190         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1191
1192         gtk_widget_queue_resize (GTK_WIDGET (view));
1193 }
1194
1195 static void
1196 goto_fith_dest (EvView *view, EvLinkDest *dest)
1197 {
1198         EvPoint doc_point;
1199         int doc_width, doc_height, page;
1200         double zoom;
1201
1202         page = ev_link_dest_get_page (dest);
1203         ev_page_cache_get_size (view->page_cache, page, 0, 1.0, &doc_width, &doc_height);
1204
1205         doc_point.x = 0;
1206         doc_point.y = ev_link_dest_get_top (dest);
1207
1208         zoom = zoom_for_size_fit_width (doc_width, ev_link_dest_get_top (dest),
1209                                         ev_view_get_width (view),
1210                                         ev_view_get_height (view), 0);
1211
1212         ev_view_set_sizing_mode (view, EV_SIZING_FIT_WIDTH);
1213         ev_view_set_zoom (view, zoom, FALSE);
1214
1215         view->current_page = page;
1216         view->pending_point = doc_point;
1217         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1218
1219         gtk_widget_queue_resize (GTK_WIDGET (view));
1220 }
1221
1222 static void
1223 goto_fit_dest (EvView *view, EvLinkDest *dest)
1224 {
1225         double zoom;
1226         int doc_width, doc_height;
1227         int page;
1228
1229         page = ev_link_dest_get_page (dest);
1230         ev_page_cache_get_size (view->page_cache, page, 0, 1.0, &doc_width, &doc_height);
1231
1232         zoom = zoom_for_size_best_fit (doc_width, doc_height, ev_view_get_width (view),
1233                                        ev_view_get_height (view), 0, 0);
1234
1235         ev_view_set_sizing_mode (view, EV_SIZING_BEST_FIT);
1236         ev_view_set_zoom (view, zoom, FALSE);
1237
1238         view->current_page = page;
1239         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1240
1241         gtk_widget_queue_resize (GTK_WIDGET (view));
1242 }
1243
1244 static void
1245 goto_xyz_dest (EvView *view, EvLinkDest *dest)
1246 {
1247         EvPoint doc_point;
1248         gint page;
1249         double zoom;
1250
1251         zoom = ev_link_dest_get_zoom (dest);
1252         page = ev_link_dest_get_page (dest);
1253
1254         if (zoom > 1) {
1255                 ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1256                 ev_view_set_zoom (view, zoom, FALSE);
1257         }
1258
1259         doc_point.x = ev_link_dest_get_left (dest);
1260         doc_point.y = ev_link_dest_get_top (dest);
1261
1262         view->current_page = page;
1263         view->pending_point = doc_point;
1264         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1265
1266         gtk_widget_queue_resize (GTK_WIDGET (view));
1267 }
1268
1269 static void
1270 goto_dest (EvView *view, EvLinkDest *dest)
1271 {
1272         EvLinkDestType type;
1273         int page, n_pages, current_page;
1274
1275         page = ev_link_dest_get_page (dest);
1276         n_pages = ev_page_cache_get_n_pages (view->page_cache);
1277
1278         if (page < 0 || page >= n_pages)
1279                 return;
1280
1281         current_page = view->current_page;
1282
1283         type = ev_link_dest_get_dest_type (dest);
1284
1285         switch (type) {
1286                 case EV_LINK_DEST_TYPE_PAGE:
1287                         ev_page_cache_set_current_page (view->page_cache, page);
1288                         break;
1289                 case EV_LINK_DEST_TYPE_FIT:
1290                         goto_fit_dest (view, dest);
1291                         break;
1292                 case EV_LINK_DEST_TYPE_FITH:
1293                         goto_fith_dest (view, dest);
1294                         break;
1295                 case EV_LINK_DEST_TYPE_FITV:
1296                         goto_fitv_dest (view, dest);
1297                         break;
1298                 case EV_LINK_DEST_TYPE_FITR:
1299                         goto_fitr_dest (view, dest);
1300                         break;
1301                 case EV_LINK_DEST_TYPE_XYZ:
1302                         goto_xyz_dest (view, dest);
1303                         break;
1304                 case EV_LINK_DEST_TYPE_PAGE_LABEL:
1305                         ev_page_cache_set_page_label (view->page_cache, ev_link_dest_get_page_label (dest));
1306                         break;
1307                 default:
1308                         g_assert_not_reached ();
1309         }
1310
1311         if (current_page != view->current_page)
1312                 ev_page_cache_set_current_page (view->page_cache,
1313                                                 view->current_page);
1314 }
1315
1316 static void
1317 ev_view_goto_dest (EvView *view, EvLinkDest *dest)
1318 {
1319         EvLinkDestType type;
1320
1321         type = ev_link_dest_get_dest_type (dest);
1322
1323         if (type == EV_LINK_DEST_TYPE_NAMED) {
1324                 EvLinkDest  *dest2;
1325                 const gchar *named_dest;
1326
1327                 named_dest = ev_link_dest_get_named_dest (dest);
1328                 dest2 = ev_document_links_find_link_dest (EV_DOCUMENT_LINKS (view->document),
1329                                                           named_dest);
1330                 if (dest2) {
1331                         goto_dest (view, dest2);
1332                         g_object_unref (dest2);
1333                 }
1334
1335                 return;
1336         }
1337
1338         goto_dest (view, dest);
1339 }
1340
1341 void
1342 ev_view_handle_link (EvView *view, EvLink *link)
1343 {
1344         EvLinkAction    *action = NULL;
1345         EvLinkActionType type;
1346
1347         action = ev_link_get_action (link);
1348         if (!action)
1349                 return;
1350
1351         g_signal_emit (view, signals[SIGNAL_HANDLE_LINK], 0, link);
1352
1353         type = ev_link_action_get_action_type (action);
1354
1355         switch (type) {
1356                 case EV_LINK_ACTION_TYPE_GOTO_DEST: {
1357                         EvLinkDest *dest;
1358
1359                         dest = ev_link_action_get_dest (action);
1360                         ev_view_goto_dest (view, dest);
1361                 }
1362                         break;
1363                 case EV_LINK_ACTION_TYPE_GOTO_REMOTE:
1364                 case EV_LINK_ACTION_TYPE_EXTERNAL_URI:
1365                 case EV_LINK_ACTION_TYPE_LAUNCH:
1366                 case EV_LINK_ACTION_TYPE_NAMED:
1367                         g_signal_emit (view, signals[SIGNAL_EXTERNAL_LINK], 0, action);
1368                         break;
1369         }
1370 }
1371
1372 static gchar *
1373 page_label_from_dest (EvView *view, EvLinkDest *dest)
1374 {
1375         EvLinkDestType type;
1376         gchar *msg = NULL;
1377
1378         type = ev_link_dest_get_dest_type (dest);
1379
1380         switch (type) {
1381                 case EV_LINK_DEST_TYPE_NAMED: {
1382                         EvLinkDest  *dest2;
1383                         const gchar *named_dest;
1384
1385                         named_dest = ev_link_dest_get_named_dest (dest);
1386                         dest2 = ev_document_links_find_link_dest (EV_DOCUMENT_LINKS (view->document),
1387                                                                   named_dest);
1388                         if (dest2) {
1389                                 msg = ev_page_cache_get_page_label (view->page_cache,
1390                                                                     ev_link_dest_get_page (dest2));
1391                                 g_object_unref (dest2);
1392                         }
1393                 }
1394
1395                         break;
1396                 default:
1397                         msg = ev_page_cache_get_page_label (view->page_cache,
1398                                                             ev_link_dest_get_page (dest));
1399         }
1400
1401         return msg;
1402 }
1403
1404 static char *
1405 tip_from_action_named (EvLinkAction *action)
1406 {
1407         const gchar *name = ev_link_action_get_name (action);
1408
1409         if (g_ascii_strcasecmp (name, "FirstPage") == 0) {
1410                 return g_strdup (_("Go to first page"));
1411         } else if (g_ascii_strcasecmp (name, "PrevPage") == 0) {
1412                 return g_strdup (_("Go to previous page"));
1413         } else if (g_ascii_strcasecmp (name, "NextPage") == 0) {
1414                 return g_strdup (_("Go to next page"));
1415         } else if (g_ascii_strcasecmp (name, "LastPage") == 0) {
1416                 return g_strdup (_("Go to last page"));
1417         } else if (g_ascii_strcasecmp (name, "GoToPage") == 0) {
1418                 return g_strdup (_("Go to page"));
1419         } else if (g_ascii_strcasecmp (name, "Find") == 0) {
1420                 return g_strdup (_("Find"));
1421         }
1422
1423         return NULL;
1424 }
1425
1426 static char *
1427 tip_from_link (EvView *view, EvLink *link)
1428 {
1429         EvLinkAction *action;
1430         EvLinkActionType type;
1431         char *msg = NULL;
1432         char *page_label;
1433         const char *title;
1434
1435         action = ev_link_get_action (link);
1436         title = ev_link_get_title (link);
1437
1438         if (!action)
1439                 return title ? g_strdup (title) : NULL;
1440
1441         type = ev_link_action_get_action_type (action);
1442
1443         switch (type) {
1444                 case EV_LINK_ACTION_TYPE_GOTO_DEST:
1445                         page_label = page_label_from_dest (view,
1446                                                            ev_link_action_get_dest (action));
1447                         msg = g_strdup_printf (_("Go to page %s"), page_label);
1448                         g_free (page_label);
1449                         break;
1450                 case EV_LINK_ACTION_TYPE_GOTO_REMOTE:
1451                         if (title) {
1452                                 msg = g_strdup_printf (_("Go to %s on file “%s”"), title,
1453                                                        ev_link_action_get_filename (action));
1454                         } else {
1455                                 msg = g_strdup_printf (_("Go to file “%s”"),
1456                                                        ev_link_action_get_filename (action));
1457                         }
1458
1459                         break;
1460                 case EV_LINK_ACTION_TYPE_EXTERNAL_URI:
1461                         msg = g_strdup (ev_link_action_get_uri (action));
1462                         break;
1463                 case EV_LINK_ACTION_TYPE_LAUNCH:
1464                         msg = g_strdup_printf (_("Launch %s"),
1465                                                ev_link_action_get_filename (action));
1466                         break;
1467                 case EV_LINK_ACTION_TYPE_NAMED:
1468                         msg = tip_from_action_named (action);
1469                         break;
1470                 default:
1471                         if (title)
1472                                 msg = g_strdup (title);
1473                         break;
1474         }
1475
1476         return msg;
1477 }
1478
1479 static void
1480 handle_link_over_xy (EvView *view, gint x, gint y)
1481 {
1482         EvLink *link;
1483
1484         link = ev_view_get_link_at_location (view, x, y);
1485
1486         if (view->link_tooltip == NULL) {
1487                 view->link_tooltip = ev_tooltip_new (GTK_WIDGET (view));
1488         }
1489
1490         if (view->hovered_link != link) {
1491                 view->hovered_link = link;
1492                 ev_tooltip_deactivate (EV_TOOLTIP (view->link_tooltip));
1493         }
1494
1495         if (link) {
1496                 char *msg = tip_from_link (view, link);
1497
1498                 if (msg && g_utf8_validate (msg, -1, NULL)) {
1499                         EvTooltip *tooltip = EV_TOOLTIP (view->link_tooltip);
1500
1501                         ev_tooltip_set_position (tooltip, x, y);
1502                         ev_tooltip_set_text (tooltip, msg);
1503                         ev_tooltip_activate (tooltip);
1504                 }
1505                 g_free (msg);
1506
1507                 ev_view_set_cursor (view, EV_VIEW_CURSOR_LINK);
1508         } else if (location_in_text (view, x + view->scroll_x, y + view->scroll_y)) {
1509                 ev_view_set_cursor (view, EV_VIEW_CURSOR_IBEAM);
1510         } else {
1511                 ev_view_set_status (view, NULL);
1512                 if (view->cursor == EV_VIEW_CURSOR_LINK ||
1513                     view->cursor == EV_VIEW_CURSOR_IBEAM)
1514                         ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
1515         }
1516         return;
1517 }
1518
1519 /*** Images ***/
1520 static EvImage *
1521 ev_view_get_image_at_location (EvView  *view,
1522                                gdouble  x,
1523                                gdouble  y)
1524 {
1525         gint page = -1;
1526         gint x_offset = 0, y_offset = 0;
1527         gint x_new = 0, y_new = 0;
1528         GList *image_mapping;
1529
1530         if (!EV_IS_DOCUMENT_IMAGES (view->document))
1531                 return NULL;
1532
1533         x += view->scroll_x;
1534         y += view->scroll_y;
1535
1536         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1537
1538         if (page == -1)
1539                 return NULL;
1540
1541         if (get_doc_point_from_offset (view, page, x_offset,
1542                                        y_offset, &x_new, &y_new) == FALSE)
1543                 return NULL;
1544
1545         image_mapping = ev_pixbuf_cache_get_image_mapping (view->pixbuf_cache, page);
1546
1547         if (image_mapping)
1548                 return ev_image_mapping_find (image_mapping, x_new, y_new);
1549         else
1550                 return NULL;
1551 }
1552
1553 /*** GtkWidget implementation ***/
1554
1555 static void
1556 ev_view_size_request_continuous_dual_page (EvView         *view,
1557                                            GtkRequisition *requisition)
1558 {
1559         int max_width;
1560         gint n_pages;
1561         GtkBorder border;
1562
1563         ev_page_cache_get_max_width (view->page_cache, view->rotation,
1564                                      view->scale, &max_width);
1565         compute_border (view, max_width, max_width, &border);
1566
1567         n_pages = ev_page_cache_get_n_pages (view->page_cache) + 1;
1568
1569         requisition->width = (max_width + border.left + border.right) * 2 + (view->spacing * 3);
1570         get_page_y_offset (view, n_pages, view->scale, &requisition->height);
1571
1572         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
1573                 requisition->width = 1;
1574         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
1575                 requisition->width = 1;
1576                 /* FIXME: This could actually be set on one page docs or docs
1577                  * with a strange aspect ratio. */
1578                 /* requisition->height = 1;*/
1579         }
1580 }
1581
1582 static void
1583 ev_view_size_request_continuous (EvView         *view,
1584                                  GtkRequisition *requisition)
1585 {
1586         int max_width;
1587         int n_pages;
1588         GtkBorder border;
1589
1590
1591         ev_page_cache_get_max_width (view->page_cache, view->rotation,
1592                                      view->scale, &max_width);
1593         n_pages = ev_page_cache_get_n_pages (view->page_cache);
1594         compute_border (view, max_width, max_width, &border);
1595
1596         requisition->width = max_width + (view->spacing * 2) + border.left + border.right;
1597         get_page_y_offset (view, n_pages, view->scale, &requisition->height);
1598
1599         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
1600                 requisition->width = 1;
1601         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
1602                 requisition->width = 1;
1603                 /* FIXME: This could actually be set on one page docs or docs
1604                  * with a strange aspect ratio. */
1605                 /* requisition->height = 1;*/
1606         }
1607 }
1608
1609 static void
1610 ev_view_size_request_dual_page (EvView         *view,
1611                                 GtkRequisition *requisition)
1612 {
1613         GtkBorder border;
1614         gint width, height;
1615
1616         /* Find the largest of the two. */
1617         ev_page_cache_get_size (view->page_cache,
1618                                 view->current_page,
1619                                 view->rotation,
1620                                 view->scale,
1621                                 &width, &height);
1622         if (view->current_page + 1 < ev_page_cache_get_n_pages (view->page_cache)) {
1623                 gint width_2, height_2;
1624                 ev_page_cache_get_size (view->page_cache,
1625                                         view->current_page + 1,
1626                                         view->rotation,
1627                                         view->scale,
1628                                         &width_2, &height_2);
1629                 if (width_2 > width) {
1630                         width = width_2;
1631                         height = height_2;
1632                 }
1633         }
1634         compute_border (view, width, height, &border);
1635
1636         requisition->width = ((width + border.left + border.right) * 2) +
1637                 (view->spacing * 3);
1638         requisition->height = (height + border.top + border.bottom) +
1639                 (view->spacing * 2);
1640
1641         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
1642                 requisition->width = 1;
1643         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
1644                 requisition->width = 1;
1645                 requisition->height = 1;
1646         }
1647 }
1648
1649 static void
1650 ev_view_size_request_single_page (EvView         *view,
1651                                   GtkRequisition *requisition)
1652 {
1653         GtkBorder border;
1654         gint width, height;
1655
1656         ev_page_cache_get_size (view->page_cache,
1657                                 view->current_page,
1658                                 view->rotation,
1659                                 view->scale,
1660                                 &width, &height);
1661         compute_border (view, width, height, &border);
1662
1663         requisition->width = width + border.left + border.right + (2 * view->spacing);
1664         requisition->height = height + border.top + border.bottom + (2 * view->spacing);
1665
1666         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
1667                 requisition->width = 1;
1668                 requisition->height = height + border.top + border.bottom + (2 * view->spacing);
1669         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
1670                 requisition->width = 1;
1671                 requisition->height = 1;
1672         }
1673 }
1674
1675 static void
1676 ev_view_size_request (GtkWidget      *widget,
1677                       GtkRequisition *requisition)
1678 {
1679         EvView *view = EV_VIEW (widget);
1680
1681         if (view->document == NULL) {
1682                 requisition->width = 1;
1683                 requisition->height = 1;
1684                 return;
1685         }
1686
1687         if (view->presentation) {
1688                 requisition->width = 1;
1689                 requisition->height = 1;
1690                 return;
1691         }
1692
1693         if (view->continuous && view->dual_page)
1694                 ev_view_size_request_continuous_dual_page (view, requisition);
1695         else if (view->continuous)
1696                 ev_view_size_request_continuous (view, requisition);
1697         else if (view->dual_page)
1698                 ev_view_size_request_dual_page (view, requisition);
1699         else
1700                 ev_view_size_request_single_page (view, requisition);
1701 }
1702
1703 static void
1704 ev_view_size_allocate (GtkWidget      *widget,
1705                        GtkAllocation  *allocation)
1706 {
1707         EvView *view = EV_VIEW (widget);
1708
1709         GTK_WIDGET_CLASS (ev_view_parent_class)->size_allocate (widget, allocation);
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
1729 static void
1730 ev_view_realize (GtkWidget *widget)
1731 {
1732         EvView *view = EV_VIEW (widget);
1733         GdkWindowAttr attributes;
1734
1735         GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
1736
1737         attributes.window_type = GDK_WINDOW_CHILD;
1738         attributes.wclass = GDK_INPUT_OUTPUT;
1739         attributes.visual = gtk_widget_get_visual (widget);
1740         attributes.colormap = gtk_widget_get_colormap (widget);
1741
1742         attributes.x = widget->allocation.x;
1743         attributes.y = widget->allocation.y;
1744         attributes.width = widget->allocation.width;
1745         attributes.height = widget->allocation.height;
1746         attributes.event_mask = GDK_EXPOSURE_MASK |
1747                                 GDK_BUTTON_PRESS_MASK |
1748                                 GDK_BUTTON_RELEASE_MASK |
1749                                 GDK_SCROLL_MASK |
1750                                 GDK_KEY_PRESS_MASK |
1751                                 GDK_POINTER_MOTION_MASK |
1752                                 GDK_POINTER_MOTION_HINT_MASK |
1753                                 GDK_ENTER_NOTIFY_MASK |
1754                                 GDK_LEAVE_NOTIFY_MASK;
1755
1756         widget->window = gdk_window_new (gtk_widget_get_parent_window (widget),
1757                                          &attributes,
1758                                          GDK_WA_X | GDK_WA_Y |
1759                                          GDK_WA_COLORMAP |
1760                                          GDK_WA_VISUAL);
1761         gdk_window_set_user_data (widget->window, widget);
1762         widget->style = gtk_style_attach (widget->style, widget->window);
1763
1764         if (view->presentation)
1765                 gdk_window_set_background (widget->window, &widget->style->black);
1766         else
1767                 gdk_window_set_background (widget->window, &widget->style->mid [GTK_STATE_NORMAL]);
1768 }
1769
1770 static gboolean
1771 ev_view_scroll_event (GtkWidget *widget, GdkEventScroll *event)
1772 {
1773         EvView *view = EV_VIEW (widget);
1774         guint state;
1775
1776         state = event->state & gtk_accelerator_get_default_mod_mask ();
1777
1778         if (state == GDK_CONTROL_MASK && view->presentation == FALSE) {
1779                 ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1780
1781                 if (event->direction == GDK_SCROLL_UP ||
1782                     event->direction == GDK_SCROLL_LEFT) {
1783                         if (ev_view_can_zoom_in (view)) {
1784                                 ev_view_zoom_in (view);
1785                         }
1786                 } else {
1787                         if (ev_view_can_zoom_out (view)) {
1788                                 ev_view_zoom_out (view);
1789                         }
1790                 }
1791
1792                 return TRUE;
1793         }
1794
1795         view->jump_to_find_result = FALSE;
1796         /* Shift+Wheel scrolls the in the perpendicular direction */
1797         if (state & GDK_SHIFT_MASK) {
1798                 if (event->direction == GDK_SCROLL_UP)
1799                         event->direction = GDK_SCROLL_LEFT;
1800                 if (event->direction == GDK_SCROLL_LEFT)
1801                         event->direction = GDK_SCROLL_UP;
1802                 if (event->direction == GDK_SCROLL_DOWN)
1803                         event->direction = GDK_SCROLL_RIGHT;
1804                 if (event->direction == GDK_SCROLL_RIGHT)
1805                         event->direction = GDK_SCROLL_DOWN;
1806
1807                 event->state &= ~GDK_SHIFT_MASK;
1808                 state &= ~GDK_SHIFT_MASK;
1809         }
1810
1811         if (state == 0 && view->presentation) {
1812                 switch (event->direction) {
1813                         case GDK_SCROLL_DOWN:
1814                         case GDK_SCROLL_RIGHT:
1815                                 ev_view_next_page (view);
1816                                 break;
1817                         case GDK_SCROLL_UP:
1818                         case GDK_SCROLL_LEFT:
1819                                 ev_view_previous_page (view);
1820                                 break;
1821                 }
1822
1823                 return TRUE;
1824         }
1825
1826         return FALSE;
1827 }
1828
1829 static EvViewSelection *
1830 find_selection_for_page (EvView *view,
1831                          gint    page)
1832 {
1833         GList *list;
1834
1835         for (list = view->selection_info.selections; list != NULL; list = list->next) {
1836                 EvViewSelection *selection;
1837
1838                 selection = (EvViewSelection *) list->data;
1839
1840                 if (selection->page == page)
1841                         return selection;
1842         }
1843
1844         return NULL;
1845 }
1846
1847 static void
1848 draw_end_presentation_page (EvView       *view,
1849                             GdkRectangle *page_area)
1850 {
1851         PangoLayout *layout;
1852         PangoFontDescription *font_desc;
1853         gchar *markup;
1854         const gchar *text = _("End of presentation. Press Escape to exit.");
1855
1856         if (view->presentation_state != EV_PRESENTATION_END)
1857                 return;
1858
1859         layout = gtk_widget_create_pango_layout (GTK_WIDGET (view), NULL);
1860         markup = g_strdup_printf ("<span foreground=\"white\">%s</span>", text);
1861         pango_layout_set_markup (layout, markup, -1);
1862         g_free (markup);
1863
1864         font_desc = pango_font_description_new ();
1865         pango_font_description_set_size (font_desc, 16 * PANGO_SCALE);
1866         pango_layout_set_font_description (layout, font_desc);
1867
1868         gtk_paint_layout (GTK_WIDGET (view)->style,
1869                           GTK_WIDGET (view)->window,
1870                           GTK_WIDGET_STATE (view),
1871                           FALSE,
1872                           page_area,
1873                           GTK_WIDGET (view),
1874                           NULL,
1875                           page_area->x + 15,
1876                           page_area->y + 15,
1877                           layout);
1878
1879         pango_font_description_free (font_desc);
1880         g_object_unref (layout);
1881 }
1882
1883 static gboolean
1884 ev_view_expose_event (GtkWidget      *widget,
1885                       GdkEventExpose *event)
1886 {
1887         EvView *view = EV_VIEW (widget);
1888         int i;
1889
1890         if (view->presentation) {
1891                 switch (view->presentation_state) {
1892                         case EV_PRESENTATION_END: {
1893                                 GdkRectangle area = {0};
1894
1895                                 area.width = widget->allocation.width;
1896                                 area.height = widget->allocation.height;
1897
1898                                 draw_end_presentation_page (view, &area);
1899                         }
1900                                 return FALSE;
1901                         case EV_PRESENTATION_BLACK:
1902                         case EV_PRESENTATION_WHITE:
1903                                 return FALSE;
1904                         case EV_PRESENTATION_NORMAL:
1905                         default:
1906                                 break;
1907                 }
1908         } else if (view->loading) {
1909                 GdkRectangle area = {0};
1910
1911                 area.width = widget->allocation.width;
1912                 area.height = widget->allocation.height;
1913
1914                 draw_loading_text (view,
1915                                    &area,
1916                                    &(event->area));
1917         }
1918
1919         if (view->document == NULL)
1920                 return FALSE;
1921
1922         for (i = view->start_page; i <= view->end_page; i++) {
1923                 GdkRectangle page_area;
1924                 GtkBorder border;
1925                 gboolean page_ready = TRUE;
1926
1927                 if (!get_page_extents (view, i, &page_area, &border))
1928                         continue;
1929
1930                 page_area.x -= view->scroll_x;
1931                 page_area.y -= view->scroll_y;
1932
1933                 draw_one_page (view, i, &page_area, &border, &(event->area), &page_ready);
1934
1935                 if (page_ready && EV_IS_DOCUMENT_FIND (view->document))
1936                         highlight_find_results (view, i);
1937         }
1938
1939         return FALSE;
1940 }
1941
1942 static gboolean
1943 ev_view_do_popup_menu (EvView *view,
1944                        gdouble x,
1945                        gdouble y)
1946 {
1947         EvLink  *link;
1948         EvImage *image;
1949
1950         image = ev_view_get_image_at_location (view, x, y);
1951         if (image) {
1952                 g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, image);
1953                 return TRUE;
1954         }
1955
1956         link = ev_view_get_link_at_location (view, x, y);
1957         if (link) {
1958                 g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, link);
1959                 return TRUE;
1960         }
1961
1962         g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, NULL);
1963
1964         return TRUE;
1965 }
1966
1967 static gboolean
1968 ev_view_popup_menu (GtkWidget *widget)
1969 {
1970         gint x, y;
1971
1972         gtk_widget_get_pointer (widget, &x, &y);
1973         return ev_view_do_popup_menu (EV_VIEW (widget), x, y);
1974 }
1975
1976 static gboolean
1977 ev_view_button_press_event (GtkWidget      *widget,
1978                             GdkEventButton *event)
1979 {
1980         EvView *view = EV_VIEW (widget);
1981
1982         if (!GTK_WIDGET_HAS_FOCUS (widget)) {
1983                 gtk_widget_grab_focus (widget);
1984         }
1985
1986         view->pressed_button = event->button;
1987         view->selection_info.in_drag = FALSE;
1988
1989         switch (event->button) {
1990                 case 1: {
1991                         EvImage *image;
1992
1993                         if (view->selection_info.selections) {
1994                                 if (location_in_selected_text (view,
1995                                                                event->x + view->scroll_x,
1996                                                                event->y + view->scroll_y)) {
1997                                         view->selection_info.in_drag = TRUE;
1998                                 } else {
1999                                         clear_selection (view);
2000                                 }
2001
2002                                 gtk_widget_queue_draw (widget);
2003                         } else if ((image = ev_view_get_image_at_location (view, event->x, event->y))) {
2004                                 if (view->image_dnd_info.image)
2005                                         g_object_unref (view->image_dnd_info.image);
2006                                 view->image_dnd_info.image = g_object_ref (image);
2007                                 view->image_dnd_info.in_drag = TRUE;
2008
2009                                 view->image_dnd_info.start.x = event->x + view->scroll_x;
2010                                 view->image_dnd_info.start.y = event->y + view->scroll_y;
2011                         }
2012
2013                         view->selection_info.start.x = event->x + view->scroll_x;
2014                         view->selection_info.start.y = event->y + view->scroll_y;
2015                 }
2016                         return TRUE;
2017                 case 2:
2018                         /* use root coordinates as reference point because
2019                          * scrolling changes window relative coordinates */
2020                         view->drag_info.start.x = event->x_root;
2021                         view->drag_info.start.y = event->y_root;
2022                         view->drag_info.hadj = gtk_adjustment_get_value (view->hadjustment);
2023                         view->drag_info.vadj = gtk_adjustment_get_value (view->vadjustment);
2024
2025                         ev_view_set_cursor (view, EV_VIEW_CURSOR_DRAG);
2026
2027                         return TRUE;
2028                 case 3:
2029                         return ev_view_do_popup_menu (view, event->x, event->y);
2030         }
2031
2032         return FALSE;
2033 }
2034
2035 /*** Drag and Drop ***/
2036 static void
2037 ev_view_drag_data_get (GtkWidget        *widget,
2038                        GdkDragContext   *context,
2039                        GtkSelectionData *selection_data,
2040                        guint             info,
2041                        guint             time)
2042 {
2043         EvView *view = EV_VIEW (widget);
2044
2045         switch (info) {
2046                 case TARGET_DND_TEXT:
2047                         if (view->selection_info.selections &&
2048                             ev_document_can_get_text (view->document)) {
2049                                 gchar *text;
2050
2051                                 text = get_selected_text (view);
2052
2053                                 gtk_selection_data_set_text (selection_data,
2054                                                              text,
2055                                                              strlen (text));
2056
2057                                 g_free (text);
2058                         }
2059                         break;
2060                 case TARGET_DND_IMAGE:
2061                         if (view->image_dnd_info.image) {
2062                                 GdkPixbuf *pixbuf;
2063
2064                                 pixbuf = ev_image_get_pixbuf (view->image_dnd_info.image);
2065                                 gtk_selection_data_set_pixbuf (selection_data, pixbuf);
2066                         }
2067                         break;
2068                 case TARGET_DND_URI:
2069                         if (view->image_dnd_info.image) {
2070                                 const gchar *tmp_uri;
2071                                 gchar      **uris;
2072
2073                                 tmp_uri = ev_image_save_tmp (view->image_dnd_info.image);
2074
2075                                 uris = g_new0 (gchar *, 2);
2076                                 uris[0] = (gchar *)tmp_uri;
2077
2078                                 gtk_selection_data_set_uris (selection_data, uris);
2079
2080                                 /* g_free instead of g_strfreev since tmp_uri is const */
2081                                 g_free (uris);
2082                         }
2083         }
2084 }
2085
2086 static gboolean
2087 ev_view_drag_motion (GtkWidget      *widget,
2088                      GdkDragContext *context,
2089                      gint            x,
2090                      gint            y,
2091                      guint           time)
2092 {
2093         if (gtk_drag_get_source_widget (context) == widget)
2094                 gdk_drag_status (context, 0, time);
2095         else
2096                 gdk_drag_status (context, context->suggested_action, time);
2097
2098         return TRUE;
2099 }
2100
2101 static void
2102 ev_view_drag_data_received (GtkWidget          *widget,
2103                             GdkDragContext     *context,
2104                             gint                x,
2105                             gint                y,
2106                             GtkSelectionData   *selection_data,
2107                             guint               info,
2108                             guint               time)
2109 {
2110         gchar  **uris;
2111         gint     i = 0;
2112         GSList  *uri_list = NULL;
2113
2114         uris = gtk_selection_data_get_uris (selection_data);
2115         if (!uris) {
2116                 gtk_drag_finish (context, FALSE, FALSE, time);
2117                 return;
2118         }
2119
2120         for (i = 0; uris[i]; i++) {
2121                 uri_list = g_slist_prepend (uri_list, (gpointer) uris[i]);
2122         }
2123
2124         ev_application_open_uri_list (EV_APP, uri_list,
2125                                       gtk_widget_get_screen (widget),
2126                                       0);
2127         gtk_drag_finish (context, TRUE, FALSE, time);
2128
2129         g_strfreev (uris);
2130         g_slist_free (uri_list);
2131 }
2132
2133
2134 static gboolean
2135 selection_update_idle_cb (EvView *view)
2136 {
2137         compute_selections (view, &view->selection_info.start, &view->motion);
2138         view->selection_update_id = 0;
2139         return FALSE;
2140 }
2141
2142 static gboolean
2143 selection_scroll_timeout_cb (EvView *view)
2144 {
2145         gint x, y, shift = 0;
2146         GtkWidget *widget = GTK_WIDGET (view);
2147
2148         gtk_widget_get_pointer (widget, &x, &y);
2149
2150         if (y > widget->allocation.height) {
2151                 shift = (y - widget->allocation.height) / 2;
2152         } else if (y < 0) {
2153                 shift = y / 2;
2154         }
2155
2156         if (shift)
2157                 gtk_adjustment_set_value (view->vadjustment,
2158                                           CLAMP (view->vadjustment->value + shift,
2159                                           view->vadjustment->lower,
2160                                           view->vadjustment->upper -
2161                                           view->vadjustment->page_size));
2162
2163         if (x > widget->allocation.width) {
2164                 shift = (x - widget->allocation.width) / 2;
2165         } else if (x < 0) {
2166                 shift = x / 2;
2167         }
2168
2169         if (shift)
2170                 gtk_adjustment_set_value (view->hadjustment,
2171                                           CLAMP (view->hadjustment->value + shift,
2172                                           view->hadjustment->lower,
2173                                           view->hadjustment->upper -
2174                                           view->hadjustment->page_size));
2175
2176         return TRUE;
2177 }
2178
2179 static gboolean
2180 ev_view_motion_notify_event (GtkWidget      *widget,
2181                              GdkEventMotion *event)
2182 {
2183         EvView *view = EV_VIEW (widget);
2184         gint x, y;
2185
2186         if (!view->document)
2187                 return FALSE;
2188
2189         if (event->is_hint || event->window != widget->window) {
2190             gtk_widget_get_pointer (widget, &x, &y);
2191         } else {
2192             x = event->x;
2193             y = event->y;
2194         }
2195
2196         if (view->selection_info.in_drag) {
2197                 if (gtk_drag_check_threshold (widget,
2198                                               view->selection_info.start.x,
2199                                               view->selection_info.start.y,
2200                                               x, y)) {
2201                         GtkTargetList *target_list = gtk_target_list_new (NULL, 0);
2202
2203                         gtk_target_list_add_text_targets (target_list, TARGET_DND_TEXT);
2204
2205                         gtk_drag_begin (widget, target_list,
2206                                         GDK_ACTION_COPY,
2207                                         1, (GdkEvent *)event);
2208
2209                         view->selection_info.in_drag = FALSE;
2210
2211                         gtk_target_list_unref (target_list);
2212
2213                         return TRUE;
2214                 }
2215         } else if (view->image_dnd_info.in_drag) {
2216                 if (gtk_drag_check_threshold (widget,
2217                                               view->selection_info.start.x,
2218                                               view->selection_info.start.y,
2219                                               x, y)) {
2220                         GtkTargetList *target_list = gtk_target_list_new (NULL, 0);
2221
2222                         gtk_target_list_add_uri_targets (target_list, TARGET_DND_URI);
2223                         gtk_target_list_add_image_targets (target_list, TARGET_DND_IMAGE, TRUE);
2224
2225                         gtk_drag_begin (widget, target_list,
2226                                         GDK_ACTION_COPY,
2227                                         1, (GdkEvent *)event);
2228
2229                         view->image_dnd_info.in_drag = FALSE;
2230
2231                         gtk_target_list_unref (target_list);
2232
2233                         return TRUE;
2234                 }
2235         }
2236
2237         /* For the Evince 0.4.x release, we limit selection to un-rotated
2238          * documents only.
2239          */
2240         if (view->pressed_button == 1 && view->rotation == 0) {
2241
2242                 /* Schedule timeout to scroll during selection and additionally
2243                  * scroll once to allow arbitrary speed. */
2244                 if (!view->selection_scroll_id)
2245                     view->selection_scroll_id = g_timeout_add (SCROLL_TIME, (GSourceFunc)selection_scroll_timeout_cb, view);
2246                 else
2247                     selection_scroll_timeout_cb (view);
2248
2249                 view->selection_info.in_selection = TRUE;
2250                 view->motion.x = x + view->scroll_x;
2251                 view->motion.y = y + view->scroll_y;
2252
2253                 /* Queue an idle to handle the motion.  We do this because
2254                  * handling any selection events in the motion could be slower
2255                  * than new motion events reach us.  We always put it in the
2256                  * idle to make sure we catch up and don't visibly lag the
2257                  * mouse. */
2258                 if (!view->selection_update_id)
2259                         view->selection_update_id = g_idle_add ((GSourceFunc)selection_update_idle_cb, view);
2260
2261                 return TRUE;
2262         } else if (view->pressed_button == 2) {
2263                 if (!view->drag_info.in_drag) {
2264                         gboolean start;
2265
2266                         start = gtk_drag_check_threshold (widget,
2267                                                           view->drag_info.start.x,
2268                                                           view->drag_info.start.y,
2269                                                           event->x_root,
2270                                                           event->y_root);
2271                         view->drag_info.in_drag = start;
2272                 }
2273
2274                 if (view->drag_info.in_drag) {
2275                         int dx, dy;
2276                         gdouble dhadj_value, dvadj_value;
2277
2278                         dx = event->x_root - view->drag_info.start.x;
2279                         dy = event->y_root - view->drag_info.start.y;
2280
2281                         dhadj_value = view->hadjustment->page_size *
2282                                       (gdouble)dx / widget->allocation.width;
2283                         dvadj_value = view->vadjustment->page_size *
2284                                       (gdouble)dy / widget->allocation.height;
2285
2286                         /* clamp scrolling to visible area */
2287                         gtk_adjustment_set_value (view->hadjustment,
2288                                                   MIN(view->drag_info.hadj - dhadj_value,
2289                                                       view->hadjustment->upper -
2290                                                       view->hadjustment->page_size));
2291                         gtk_adjustment_set_value (view->vadjustment,
2292                                                   MIN(view->drag_info.vadj - dvadj_value,
2293                                                       view->vadjustment->upper -
2294                                                       view->vadjustment->page_size));
2295
2296                         return TRUE;
2297                 }
2298         } else if (view->pressed_button <= 0) {
2299                 handle_link_over_xy (view, x, y);
2300                 return TRUE;
2301         }
2302
2303         return FALSE;
2304 }
2305
2306 static gboolean
2307 ev_view_button_release_event (GtkWidget      *widget,
2308                               GdkEventButton *event)
2309 {
2310         EvView *view = EV_VIEW (widget);
2311         EvLink *link;
2312
2313         if (view->pressed_button == 2) {
2314                 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
2315         }
2316
2317         if (view->document && view->pressed_button == 1) {
2318                 link = ev_view_get_link_at_location (view, event->x, event->y);
2319         } else {
2320                 link = NULL;
2321         }
2322
2323         view->pressed_button = -1;
2324         view->drag_info.in_drag = FALSE;
2325         view->image_dnd_info.in_drag = FALSE;
2326
2327         if (view->selection_scroll_id) {
2328             g_source_remove (view->selection_scroll_id);
2329             view->selection_scroll_id = 0;
2330         }
2331         if (view->selection_update_id) {
2332             g_source_remove (view->selection_update_id);
2333             view->selection_update_id = 0;
2334         }
2335
2336         if (view->selection_info.selections) {
2337                 ev_view_update_primary_selection (view);
2338
2339                 if (view->selection_info.in_drag) {
2340                         clear_selection (view);
2341                         gtk_widget_queue_draw (widget);
2342                 }
2343
2344                 view->selection_info.in_drag = FALSE;
2345         } else if (link) {
2346                 ev_view_handle_link (view, link);
2347         } else if (view->presentation) {
2348                 switch (event->button) {
2349                         case 1:
2350                                 ev_view_next_page (view);
2351                                 return TRUE;
2352                         case 3:
2353                                 ev_view_previous_page (view);
2354                                 return TRUE;
2355                 }
2356         }
2357
2358         return FALSE;
2359 }
2360
2361 /* Goto Window */
2362 /* Cut and paste from gtkwindow.c */
2363 static void
2364 send_focus_change (GtkWidget *widget,
2365                    gboolean   in)
2366 {
2367         GdkEvent *fevent = gdk_event_new (GDK_FOCUS_CHANGE);
2368
2369         g_object_ref (widget);
2370
2371         if (in)
2372                 GTK_WIDGET_SET_FLAGS (widget, GTK_HAS_FOCUS);
2373         else
2374                 GTK_WIDGET_UNSET_FLAGS (widget, GTK_HAS_FOCUS);
2375
2376         fevent->focus_change.type = GDK_FOCUS_CHANGE;
2377         fevent->focus_change.window = g_object_ref (widget->window);
2378         fevent->focus_change.in = in;
2379
2380         gtk_widget_event (widget, fevent);
2381
2382         g_object_notify (G_OBJECT (widget), "has-focus");
2383
2384         g_object_unref (widget);
2385         gdk_event_free (fevent);
2386 }
2387
2388 static void
2389 ev_view_goto_window_hide (EvView *view)
2390 {
2391         /* send focus-in event */
2392         send_focus_change (view->goto_entry, FALSE);
2393         gtk_widget_hide (view->goto_window);
2394         gtk_entry_set_text (GTK_ENTRY (view->goto_entry), "");
2395 }
2396
2397 static gboolean
2398 ev_view_goto_window_delete_event (GtkWidget   *widget,
2399                                   GdkEventAny *event,
2400                                   EvView      *view)
2401 {
2402         ev_view_goto_window_hide (view);
2403
2404         return TRUE;
2405 }
2406
2407 static gboolean
2408 key_is_numeric (guint keyval)
2409 {
2410         return ((keyval >= GDK_0 && keyval <= GDK_9) ||
2411                 (keyval >= GDK_KP_0 && keyval <= GDK_KP_9));
2412 }
2413
2414 static gboolean
2415 ev_view_goto_window_key_press_event (GtkWidget   *widget,
2416                                      GdkEventKey *event,
2417                                      EvView      *view)
2418 {
2419         switch (event->keyval) {
2420                 case GDK_Escape:
2421                 case GDK_Tab:
2422                 case GDK_KP_Tab:
2423                 case GDK_ISO_Left_Tab:
2424                         ev_view_goto_window_hide (view);
2425                         return TRUE;
2426                 case GDK_Return:
2427                 case GDK_KP_Enter:
2428                 case GDK_ISO_Enter:
2429                         return FALSE;
2430                 default:
2431                         if (!key_is_numeric (event->keyval))
2432                                 return TRUE;
2433         }
2434
2435         return FALSE;
2436 }
2437
2438 static gboolean
2439 ev_view_goto_window_button_press_event (GtkWidget      *widget,
2440                                         GdkEventButton *event,
2441                                         EvView         *view)
2442 {
2443         ev_view_goto_window_hide (view);
2444
2445         return TRUE;
2446 }
2447
2448 static void
2449 ev_view_goto_entry_activate (GtkEntry *entry,
2450                              EvView   *view)
2451 {
2452         const gchar *text;
2453         gint         page;
2454
2455         text = gtk_entry_get_text (entry);
2456         page = atoi (text) - 1;
2457
2458         ev_view_goto_window_hide (view);
2459
2460         if (page >= 0 &&
2461             page < ev_page_cache_get_n_pages (view->page_cache))
2462                 ev_page_cache_set_current_page (view->page_cache, page);
2463 }
2464
2465 static void
2466 ev_view_goto_window_create (EvView *view)
2467 {
2468         GtkWidget *frame, *hbox, *toplevel, *label;
2469
2470         toplevel = gtk_widget_get_toplevel (GTK_WIDGET (view));
2471
2472         if (view->goto_window) {
2473                 if (GTK_WINDOW (toplevel)->group)
2474                         gtk_window_group_add_window (GTK_WINDOW (toplevel)->group,
2475                                                      GTK_WINDOW (view->goto_window));
2476                 else if (GTK_WINDOW (view->goto_window)->group)
2477                         gtk_window_group_remove_window (GTK_WINDOW (view->goto_window)->group,
2478                                                         GTK_WINDOW (view->goto_window));
2479                 return;
2480         }
2481
2482         view->goto_window = gtk_window_new (GTK_WINDOW_POPUP);
2483
2484         if (GTK_WINDOW (toplevel)->group)
2485                 gtk_window_group_add_window (GTK_WINDOW (toplevel)->group,
2486                                              GTK_WINDOW (view->goto_window));
2487
2488         gtk_window_set_modal (GTK_WINDOW (view->goto_window), TRUE);
2489
2490         g_signal_connect (view->goto_window, "delete_event",
2491                           G_CALLBACK (ev_view_goto_window_delete_event),
2492                           view);
2493         g_signal_connect (view->goto_window, "key_press_event",
2494                           G_CALLBACK (ev_view_goto_window_key_press_event),
2495                           view);
2496         g_signal_connect (view->goto_window, "button_press_event",
2497                           G_CALLBACK (ev_view_goto_window_button_press_event),
2498                           view);
2499
2500         frame = gtk_frame_new (NULL);
2501         gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_ETCHED_IN);
2502         gtk_container_add (GTK_CONTAINER (view->goto_window), frame);
2503         gtk_widget_show (frame);
2504
2505         hbox = gtk_hbox_new (FALSE, 0);
2506         gtk_container_set_border_width (GTK_CONTAINER (hbox), 3);
2507         gtk_container_add (GTK_CONTAINER (frame), hbox);
2508         gtk_widget_show (hbox);
2509
2510         label = gtk_label_new(_("Jump to page:"));
2511         gtk_box_pack_start (GTK_BOX (hbox), label, TRUE, TRUE, 3);
2512         gtk_widget_show (label);
2513         gtk_widget_realize (label);
2514
2515         view->goto_entry = gtk_entry_new ();
2516         g_signal_connect (view->goto_entry, "activate",
2517                           G_CALLBACK (ev_view_goto_entry_activate),
2518                           view);
2519         gtk_box_pack_start_defaults (GTK_BOX (hbox), view->goto_entry);
2520         gtk_widget_show (view->goto_entry);
2521         gtk_widget_realize (view->goto_entry);
2522 }
2523
2524 static void
2525 ev_view_goto_entry_grab_focus (EvView *view)
2526 {
2527         GtkWidgetClass *entry_parent_class;
2528
2529         entry_parent_class = g_type_class_peek_parent (GTK_ENTRY_GET_CLASS (view->goto_entry));
2530         (entry_parent_class->grab_focus) (view->goto_entry);
2531
2532         send_focus_change (view->goto_entry, TRUE);
2533 }
2534
2535 static void
2536 ev_view_goto_window_send_key_event (EvView   *view,
2537                                     GdkEvent *event)
2538 {
2539         GdkEventKey *new_event;
2540         GdkScreen   *screen;
2541
2542         /* Move goto window off screen */
2543         screen = gtk_widget_get_screen (GTK_WIDGET (view));
2544         gtk_window_move (GTK_WINDOW (view->goto_window),
2545                          gdk_screen_get_width (screen) + 1,
2546                          gdk_screen_get_height (screen) + 1);
2547         gtk_widget_show (view->goto_window);
2548
2549         new_event = (GdkEventKey *) gdk_event_copy (event);
2550         g_object_unref (new_event->window);
2551         new_event->window = g_object_ref (view->goto_window->window);
2552         gtk_widget_realize (view->goto_window);
2553
2554         gtk_widget_event (view->goto_window, (GdkEvent *)new_event);
2555         gdk_event_free ((GdkEvent *)new_event);
2556         gtk_widget_hide (view->goto_window);
2557 }
2558
2559 static gboolean
2560 ev_view_key_press_event (GtkWidget   *widget,
2561                          GdkEventKey *event)
2562 {
2563         EvView *view = EV_VIEW (widget);
2564         EvPresentationState current;
2565
2566         if (!view->presentation ||
2567             view->presentation_state == EV_PRESENTATION_END)
2568                 return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
2569
2570
2571         current = view->presentation_state;
2572
2573         switch (event->keyval) {
2574                 case GDK_b:
2575                 case GDK_B:
2576                         view->presentation_state =
2577                                 (view->presentation_state == EV_PRESENTATION_BLACK) ?
2578                                 EV_PRESENTATION_NORMAL : EV_PRESENTATION_BLACK;
2579                         break;
2580                 case GDK_w:
2581                 case GDK_W:
2582                         view->presentation_state =
2583                                 (view->presentation_state == EV_PRESENTATION_WHITE) ?
2584                                 EV_PRESENTATION_NORMAL : EV_PRESENTATION_WHITE;
2585                         break;
2586                 default:
2587                         if (view->presentation_state == EV_PRESENTATION_BLACK ||
2588                             view->presentation_state == EV_PRESENTATION_WHITE) {
2589                                 view->presentation_state = EV_PRESENTATION_NORMAL;
2590                         }
2591         }
2592
2593         if (current == view->presentation_state) {
2594                 if (ev_page_cache_get_n_pages (view->page_cache) > 1 &&
2595                     key_is_numeric (event->keyval)) {
2596                         gint x, y;
2597
2598                         ev_view_goto_window_create (view);
2599                         ev_view_goto_window_send_key_event (view, (GdkEvent *)event);
2600                         gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
2601                         gtk_window_move (GTK_WINDOW (view->goto_window), x, y);
2602                         gtk_widget_show (view->goto_window);
2603                         ev_view_goto_entry_grab_focus (view);
2604
2605                         return TRUE;
2606                 }
2607
2608                 return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
2609         }
2610
2611         switch (view->presentation_state) {
2612                 case EV_PRESENTATION_NORMAL:
2613                 case EV_PRESENTATION_BLACK:
2614                         gdk_window_set_background (widget->window,
2615                                                    &widget->style->black);
2616                         break;
2617                 case EV_PRESENTATION_WHITE:
2618                         gdk_window_set_background (widget->window,
2619                                                    &widget->style->white);
2620                         break;
2621                 default:
2622                         return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
2623         }
2624
2625         gtk_widget_queue_draw (widget);
2626         return TRUE;
2627 }
2628
2629 static gint
2630 ev_view_focus_in (GtkWidget     *widget,
2631                   GdkEventFocus *event)
2632 {
2633         if (EV_VIEW (widget)->pixbuf_cache)
2634                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
2635         gtk_widget_queue_draw (widget);
2636
2637         return FALSE;
2638 }
2639
2640 static gint
2641 ev_view_focus_out (GtkWidget     *widget,
2642                      GdkEventFocus *event)
2643 {
2644         if (EV_VIEW (widget)->goto_window)
2645                 ev_view_goto_window_hide (EV_VIEW (widget));
2646
2647         if (EV_VIEW (widget)->pixbuf_cache)
2648                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
2649         gtk_widget_queue_draw (widget);
2650
2651         return FALSE;
2652 }
2653
2654 static gboolean
2655 ev_view_leave_notify_event (GtkWidget *widget, GdkEventCrossing   *event)
2656 {
2657         EvView *view = EV_VIEW (widget);
2658
2659         ev_view_set_status (view, NULL);
2660
2661         if (view->cursor == EV_VIEW_CURSOR_LINK ||
2662             view->cursor == EV_VIEW_CURSOR_IBEAM)
2663                 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
2664
2665         if (view->link_tooltip) {
2666                 view->hovered_link = NULL;
2667                 ev_tooltip_deactivate (EV_TOOLTIP (view->link_tooltip));
2668         }
2669
2670         return FALSE;
2671 }
2672
2673 static gboolean
2674 ev_view_enter_notify_event (GtkWidget *widget, GdkEventCrossing   *event)
2675 {
2676         EvView *view = EV_VIEW (widget);
2677
2678         handle_link_over_xy (view, event->x, event->y);
2679
2680         return FALSE;
2681 }
2682
2683 static void
2684 ev_view_style_set (GtkWidget *widget,
2685                    GtkStyle  *old_style)
2686 {
2687         if (EV_VIEW (widget)->pixbuf_cache)
2688                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
2689
2690         GTK_WIDGET_CLASS (ev_view_parent_class)->style_set (widget, old_style);
2691 }
2692
2693 /*** Drawing ***/
2694
2695 static guint32
2696 ev_gdk_color_to_rgb (const GdkColor *color)
2697 {
2698   guint32 result;
2699   result = (0xff0000 | (color->red & 0xff00));
2700   result <<= 8;
2701   result |= ((color->green & 0xff00) | (color->blue >> 8));
2702   return result;
2703 }
2704
2705 static void
2706 draw_rubberband (GtkWidget *widget, GdkWindow *window,
2707                  const GdkRectangle *rect, guchar alpha)
2708 {
2709         GdkGC *gc;
2710         GdkPixbuf *pixbuf;
2711         GdkColor *fill_color_gdk;
2712         guint fill_color;
2713
2714         fill_color_gdk = gdk_color_copy (&GTK_WIDGET (widget)->style->base[GTK_STATE_SELECTED]);
2715         fill_color = ev_gdk_color_to_rgb (fill_color_gdk) << 8 | alpha;
2716
2717         pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE, 8,
2718                                  rect->width, rect->height);
2719         gdk_pixbuf_fill (pixbuf, fill_color);
2720
2721         gdk_draw_pixbuf (window, NULL, pixbuf,
2722                          0, 0,
2723                          rect->x - EV_VIEW (widget)->scroll_x, rect->y - EV_VIEW (widget)->scroll_y,
2724                          rect->width, rect->height,
2725                          GDK_RGB_DITHER_NONE,
2726                          0, 0);
2727
2728         g_object_unref (pixbuf);
2729
2730         gc = gdk_gc_new (window);
2731         gdk_gc_set_rgb_fg_color (gc, fill_color_gdk);
2732         gdk_draw_rectangle (window, gc, FALSE,
2733                             rect->x - EV_VIEW (widget)->scroll_x, rect->y - EV_VIEW (widget)->scroll_y,
2734                             rect->width - 1,
2735                             rect->height - 1);
2736         g_object_unref (gc);
2737
2738         gdk_color_free (fill_color_gdk);
2739 }
2740
2741
2742 static void
2743 highlight_find_results (EvView *view, int page)
2744 {
2745         EvDocumentFind *find;
2746         int i, results = 0;
2747
2748         g_return_if_fail (EV_IS_DOCUMENT_FIND (view->document));
2749
2750         find = EV_DOCUMENT_FIND (view->document);
2751
2752         results = ev_document_find_get_n_results (find, page);
2753
2754         for (i = 0; i < results; i++) {
2755                 EvRectangle rectangle;
2756                 GdkRectangle view_rectangle;
2757                 guchar alpha;
2758
2759                 if (i == view->find_result && page == view->current_page) {
2760                         alpha = 0x90;
2761                 } else {
2762                         alpha = 0x20;
2763                 }
2764
2765                 ev_document_find_get_result (find, page, i, &rectangle);
2766                 doc_rect_to_view_rect (view, page, &rectangle, &view_rectangle);
2767                 draw_rubberband (GTK_WIDGET (view), GTK_WIDGET(view)->window,
2768                                  &view_rectangle, alpha);
2769         }
2770 }
2771
2772 static void
2773 draw_loading_text (EvView       *view,
2774                    GdkRectangle *page_area,
2775                    GdkRectangle *expose_area)
2776 {
2777         cairo_t *cr;
2778         gint     width, height;
2779
2780         /* Don't annoy users with loading messages during presentations.
2781          * FIXME: Temporary "workaround" for
2782          * http://bugzilla.gnome.org/show_bug.cgi?id=320352 */
2783         if (view->presentation)
2784                 return;
2785
2786         if (!view->loading_text) {
2787                 const gchar *loading_text;
2788                 PangoLayout *layout;
2789                 PangoFontDescription *font_desc;
2790                 PangoRectangle logical_rect;
2791                 gdouble real_scale;
2792                 gint target_width;
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                 /* We set the font to be 10 points, get the size, and scale appropriately */
2803                 pango_font_description_set_size (font_desc, 10 * PANGO_SCALE);
2804                 pango_layout_set_font_description (layout, font_desc);
2805                 pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
2806
2807                 /* Make sure we fit the middle of the page */
2808                 target_width = MAX (page_area->width / 2, 1);
2809                 real_scale = ((double)target_width / (double) logical_rect.width) * (PANGO_SCALE * 10);
2810                 pango_font_description_set_size (font_desc, (int)real_scale);
2811                 pango_layout_set_font_description (layout, font_desc);
2812                 pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
2813
2814                 view->loading_text = cairo_image_surface_create (CAIRO_FORMAT_ARGB32,
2815                                                                  logical_rect.width,
2816                                                                  logical_rect.height);
2817                 cr = cairo_create (view->loading_text);
2818                 cairo_set_source_rgb (cr,
2819                                       155 / (double)255,
2820                                       155 / (double)255,
2821                                       155 / (double)255);
2822                 pango_cairo_show_layout (cr, layout);
2823                 cairo_destroy (cr);
2824
2825                 pango_font_description_free (font_desc);
2826                 g_object_unref (layout);
2827
2828                 ev_document_fc_mutex_unlock ();
2829         }
2830
2831         width = cairo_image_surface_get_width (view->loading_text) / 2;
2832         height = (page_area->height - cairo_image_surface_get_height (view->loading_text)) / 2;
2833
2834         cr = gdk_cairo_create (GTK_WIDGET (view)->window);
2835         cairo_set_source_surface (cr, view->loading_text,
2836                                   page_area->x + width,
2837                                   page_area->y + height);
2838         cairo_paint (cr);
2839         cairo_destroy (cr);
2840 }
2841
2842 static void
2843 draw_one_page (EvView          *view,
2844                gint             page,
2845                GdkRectangle    *page_area,
2846                GtkBorder       *border,
2847                GdkRectangle    *expose_area,
2848                gboolean        *page_ready)
2849 {
2850         gint width, height;
2851         GdkPixbuf *current_pixbuf;
2852         GdkRectangle overlap;
2853         GdkRectangle real_page_area;
2854         EvViewSelection *selection;
2855         gint current_page;
2856
2857         g_assert (view->document);
2858
2859         if (! gdk_rectangle_intersect (page_area, expose_area, &overlap))
2860                 return;
2861
2862         current_page = ev_page_cache_get_current_page (view->page_cache);
2863         selection = find_selection_for_page (view, page);
2864         ev_page_cache_get_size (view->page_cache,
2865                                 page, view->rotation,
2866                                 view->scale,
2867                                 &width, &height);
2868         /* Render the document itself */
2869         real_page_area = *page_area;
2870
2871         real_page_area.x += border->left;
2872         real_page_area.y += border->top;
2873         real_page_area.width -= (border->left + border->right);
2874         real_page_area.height -= (border->top + border->bottom);
2875         *page_ready = TRUE;
2876
2877         if (!view->presentation) {
2878                 ev_document_misc_paint_one_page (GTK_WIDGET(view)->window,
2879                                                  GTK_WIDGET (view),
2880                                                  page_area, border,
2881                                                  page == current_page);
2882         }
2883
2884         if (gdk_rectangle_intersect (&real_page_area, expose_area, &overlap)) {
2885                 GdkPixbuf *selection_pixbuf = NULL;
2886                 GdkPixbuf *scaled_image;
2887                 GdkPixbuf *scaled_selection;
2888
2889                 current_pixbuf = ev_pixbuf_cache_get_pixbuf (view->pixbuf_cache, page);
2890
2891                 /* Get the selection pixbuf iff we have something to draw */
2892                 if (current_pixbuf && view->selection_mode == EV_VIEW_SELECTION_TEXT && selection)
2893                         selection_pixbuf = ev_pixbuf_cache_get_selection_pixbuf (view->pixbuf_cache,
2894                                                                                  page,
2895                                                                                  view->scale,
2896                                                                                  NULL);
2897
2898                 if (current_pixbuf == NULL)
2899                         scaled_image = NULL;
2900                 else if (width == gdk_pixbuf_get_width (current_pixbuf) &&
2901                          height == gdk_pixbuf_get_height (current_pixbuf))
2902                         scaled_image = g_object_ref (current_pixbuf);
2903                 else
2904                         /* FIXME: We don't want to scale the whole area, just the right
2905                          * area of it */
2906                         scaled_image = gdk_pixbuf_scale_simple (current_pixbuf,
2907                                                                 width, height,
2908                                                                 GDK_INTERP_NEAREST);
2909
2910                 if (selection_pixbuf == NULL)
2911                         scaled_selection = NULL;
2912                 else if (width == gdk_pixbuf_get_width (selection_pixbuf) &&
2913                          height == gdk_pixbuf_get_height (selection_pixbuf))
2914                         scaled_selection = g_object_ref (selection_pixbuf);
2915                 else
2916                         /* FIXME: We don't want to scale the whole area, just the right
2917                          * area of it */
2918                         scaled_selection = gdk_pixbuf_scale_simple (selection_pixbuf,
2919                                                                     width, height,
2920                                                                     GDK_INTERP_NEAREST);
2921
2922                 if (scaled_image) {
2923                         gdk_draw_pixbuf (GTK_WIDGET(view)->window,
2924                                          GTK_WIDGET (view)->style->fg_gc[GTK_STATE_NORMAL],
2925                                          scaled_image,
2926                                          overlap.x - real_page_area.x,
2927                                          overlap.y - real_page_area.y,
2928                                          overlap.x, overlap.y,
2929                                          overlap.width, overlap.height,
2930                                          GDK_RGB_DITHER_NORMAL,
2931                                          0, 0);
2932                         g_object_unref (scaled_image);
2933                 } else {
2934                         draw_loading_text (view,
2935                                            &real_page_area,
2936                                            expose_area);
2937                         *page_ready = FALSE;
2938                 }
2939
2940                 if (scaled_selection) {
2941                         gdk_draw_pixbuf (GTK_WIDGET(view)->window,
2942                                          GTK_WIDGET (view)->style->fg_gc[GTK_STATE_NORMAL],
2943                                          scaled_selection,
2944                                          overlap.x - real_page_area.x,
2945                                          overlap.y - real_page_area.y,
2946                                          overlap.x, overlap.y,
2947                                          overlap.width, overlap.height,
2948                                          GDK_RGB_DITHER_NORMAL,
2949                                          0, 0);
2950                         g_object_unref (scaled_selection);
2951                 }
2952         }
2953 }
2954
2955 /*** GObject functions ***/
2956
2957 static void
2958 ev_view_finalize (GObject *object)
2959 {
2960         EvView *view = EV_VIEW (object);
2961
2962         g_free (view->status);
2963         g_free (view->find_status);
2964
2965         clear_selection (view);
2966
2967         if (view->image_dnd_info.image)
2968                 g_object_unref (view->image_dnd_info.image);
2969         view->image_dnd_info.image = NULL;
2970
2971         G_OBJECT_CLASS (ev_view_parent_class)->finalize (object);
2972 }
2973
2974 static void
2975 ev_view_destroy (GtkObject *object)
2976 {
2977         EvView *view = EV_VIEW (object);
2978
2979         if (view->document) {
2980                 g_object_unref (view->document);
2981                 view->document = NULL;
2982         }
2983
2984         if (view->pixbuf_cache) {
2985                 g_object_unref (view->pixbuf_cache);
2986                 view->pixbuf_cache = NULL;
2987         }
2988
2989         if (view->link_tooltip) {
2990                 gtk_widget_destroy (view->link_tooltip);
2991                 view->link_tooltip = NULL;
2992         }
2993
2994         if (view->goto_window) {
2995                 gtk_widget_destroy (view->goto_window);
2996                 view->goto_window = NULL;
2997                 view->goto_entry = NULL;
2998         }
2999
3000         if (view->selection_scroll_id) {
3001             g_source_remove (view->selection_scroll_id);
3002             view->selection_scroll_id = 0;
3003         }
3004
3005         if (view->selection_update_id) {
3006             g_source_remove (view->selection_update_id);
3007             view->selection_update_id = 0;
3008         }
3009
3010         if (view->loading_text) {
3011                 cairo_surface_destroy (view->loading_text);
3012                 view->loading_text = NULL;
3013         }
3014
3015         ev_view_presentation_transition_stop (view);
3016
3017         ev_view_set_scroll_adjustments (view, NULL, NULL);
3018
3019         GTK_OBJECT_CLASS (ev_view_parent_class)->destroy (object);
3020 }
3021
3022 static void
3023 ev_view_set_property (GObject      *object,
3024                       guint         prop_id,
3025                       const GValue *value,
3026                       GParamSpec   *pspec)
3027 {
3028         EvView *view = EV_VIEW (object);
3029
3030         switch (prop_id) {
3031                 case PROP_CONTINUOUS:
3032                         ev_view_set_continuous (view, g_value_get_boolean (value));
3033                         break;
3034                 case PROP_DUAL_PAGE:
3035                         ev_view_set_dual_page (view, g_value_get_boolean (value));
3036                         break;
3037                 case PROP_FULLSCREEN:
3038                         ev_view_set_fullscreen (view, g_value_get_boolean (value));
3039                         break;
3040                 case PROP_PRESENTATION:
3041                         ev_view_set_presentation (view, g_value_get_boolean (value));
3042                         break;
3043                 case PROP_SIZING_MODE:
3044                         ev_view_set_sizing_mode (view, g_value_get_enum (value));
3045                         break;
3046                 case PROP_ZOOM:
3047                         ev_view_set_zoom (view, g_value_get_double (value), FALSE);
3048                         break;
3049                 case PROP_ROTATION:
3050                         ev_view_set_rotation (view, g_value_get_int (value));
3051                         break;
3052                 default:
3053                         G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
3054         }
3055 }
3056
3057 static AtkObject *
3058 ev_view_get_accessible (GtkWidget *widget)
3059 {
3060         static gboolean first_time = TRUE;
3061
3062         if (first_time) {
3063                 AtkObjectFactory *factory;
3064                 AtkRegistry *registry;
3065                 GType derived_type;
3066                 GType derived_atk_type;
3067
3068                 /*
3069                  * Figure out whether accessibility is enabled by looking at the
3070                  * type of the accessible object which would be created for
3071                  * the parent type of EvView.
3072                  */
3073                 derived_type = g_type_parent (EV_TYPE_VIEW);
3074
3075                 registry = atk_get_default_registry ();
3076                 factory = atk_registry_get_factory (registry,
3077                                                     derived_type);
3078                 derived_atk_type = atk_object_factory_get_accessible_type (factory);
3079                 if (g_type_is_a (derived_atk_type, GTK_TYPE_ACCESSIBLE))
3080                         atk_registry_set_factory_type (registry,
3081                                                        EV_TYPE_VIEW,
3082                                                        ev_view_accessible_factory_get_type ());
3083                 first_time = FALSE;
3084         }
3085         return GTK_WIDGET_CLASS (ev_view_parent_class)->get_accessible (widget);
3086 }
3087
3088 static void
3089 ev_view_get_property (GObject *object,
3090                       guint prop_id,
3091                       GValue *value,
3092                       GParamSpec *pspec)
3093 {
3094         EvView *view = EV_VIEW (object);
3095
3096         switch (prop_id) {
3097                 case PROP_STATUS:
3098                         g_value_set_string (value, view->status);
3099                         break;
3100                 case PROP_FIND_STATUS:
3101                         g_value_set_string (value, view->status);
3102                         break;
3103                 case PROP_CONTINUOUS:
3104                         g_value_set_boolean (value, view->continuous);
3105                         break;
3106                 case PROP_DUAL_PAGE:
3107                         g_value_set_boolean (value, view->dual_page);
3108                         break;
3109                 case PROP_FULLSCREEN:
3110                         g_value_set_boolean (value, view->fullscreen);
3111                         break;
3112                 case PROP_PRESENTATION:
3113                         g_value_set_boolean (value, view->presentation);
3114                         break;
3115                 case PROP_SIZING_MODE:
3116                         g_value_set_enum (value, view->sizing_mode);
3117                         break;
3118                 case PROP_ZOOM:
3119                         g_value_set_double (value, view->scale);
3120                         break;
3121                 case PROP_ROTATION:
3122                         g_value_set_int (value, view->rotation);
3123                         break;
3124                 case PROP_HAS_SELECTION:
3125                         g_value_set_boolean (value,
3126                                              view->selection_info.selections != NULL);
3127                         break;
3128                 default:
3129                         G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
3130         }
3131 }
3132
3133 static void
3134 ev_view_class_init (EvViewClass *class)
3135 {
3136         GObjectClass *object_class = G_OBJECT_CLASS (class);
3137         GtkObjectClass *gtk_object_class = GTK_OBJECT_CLASS (class);
3138         GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
3139         GtkBindingSet *binding_set;
3140
3141         object_class->finalize = ev_view_finalize;
3142         object_class->set_property = ev_view_set_property;
3143         object_class->get_property = ev_view_get_property;
3144
3145         widget_class->expose_event = ev_view_expose_event;
3146         widget_class->button_press_event = ev_view_button_press_event;
3147         widget_class->motion_notify_event = ev_view_motion_notify_event;
3148         widget_class->button_release_event = ev_view_button_release_event;
3149         widget_class->key_press_event = ev_view_key_press_event;
3150         widget_class->focus_in_event = ev_view_focus_in;
3151         widget_class->focus_out_event = ev_view_focus_out;
3152         widget_class->get_accessible = ev_view_get_accessible;
3153         widget_class->size_request = ev_view_size_request;
3154         widget_class->size_allocate = ev_view_size_allocate;
3155         widget_class->realize = ev_view_realize;
3156         widget_class->scroll_event = ev_view_scroll_event;
3157         widget_class->enter_notify_event = ev_view_enter_notify_event;
3158         widget_class->leave_notify_event = ev_view_leave_notify_event;
3159         widget_class->style_set = ev_view_style_set;
3160         widget_class->drag_data_get = ev_view_drag_data_get;
3161         widget_class->drag_motion = ev_view_drag_motion;
3162         widget_class->drag_data_received = ev_view_drag_data_received;
3163         widget_class->popup_menu = ev_view_popup_menu;
3164         gtk_object_class->destroy = ev_view_destroy;
3165
3166         class->set_scroll_adjustments = ev_view_set_scroll_adjustments;
3167         class->binding_activated = ev_view_scroll;
3168
3169         widget_class->set_scroll_adjustments_signal =
3170             g_signal_new ("set-scroll-adjustments",
3171                           G_OBJECT_CLASS_TYPE (object_class),
3172                           G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
3173                           G_STRUCT_OFFSET (EvViewClass, set_scroll_adjustments),
3174                           NULL, NULL,
3175                           ev_marshal_VOID__OBJECT_OBJECT,
3176                           G_TYPE_NONE, 2,
3177                           GTK_TYPE_ADJUSTMENT,
3178                           GTK_TYPE_ADJUSTMENT);
3179
3180         signals[SIGNAL_BINDING_ACTIVATED] = g_signal_new ("binding_activated",
3181                          G_TYPE_FROM_CLASS (object_class),
3182                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
3183                          G_STRUCT_OFFSET (EvViewClass, binding_activated),
3184                          NULL, NULL,
3185                          ev_marshal_VOID__ENUM_BOOLEAN,
3186                          G_TYPE_NONE, 2,
3187                          GTK_TYPE_SCROLL_TYPE,
3188                          G_TYPE_BOOLEAN);
3189
3190         signals[SIGNAL_ZOOM_INVALID] = g_signal_new ("zoom-invalid",
3191                          G_TYPE_FROM_CLASS (object_class),
3192                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
3193                          G_STRUCT_OFFSET (EvViewClass, zoom_invalid),
3194                          NULL, NULL,
3195                          ev_marshal_VOID__VOID,
3196                          G_TYPE_NONE, 0, G_TYPE_NONE);
3197         signals[SIGNAL_HANDLE_LINK] = g_signal_new ("handle-link",
3198                          G_TYPE_FROM_CLASS (object_class),
3199                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
3200                          G_STRUCT_OFFSET (EvViewClass, handle_link),
3201                          NULL, NULL,
3202                          g_cclosure_marshal_VOID__OBJECT,
3203                          G_TYPE_NONE, 1,
3204                          G_TYPE_OBJECT);
3205         signals[SIGNAL_EXTERNAL_LINK] = g_signal_new ("external-link",
3206                          G_TYPE_FROM_CLASS (object_class),
3207                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
3208                          G_STRUCT_OFFSET (EvViewClass, external_link),
3209                          NULL, NULL,
3210                          g_cclosure_marshal_VOID__OBJECT,
3211                          G_TYPE_NONE, 1,
3212                          G_TYPE_OBJECT);
3213         signals[SIGNAL_POPUP_MENU] = g_signal_new ("popup",
3214                          G_TYPE_FROM_CLASS (object_class),
3215                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
3216                          G_STRUCT_OFFSET (EvViewClass, popup_menu),
3217                          NULL, NULL,
3218                          g_cclosure_marshal_VOID__OBJECT,
3219                          G_TYPE_NONE, 1,
3220                          G_TYPE_OBJECT);
3221
3222         g_object_class_install_property (object_class,
3223                                          PROP_STATUS,
3224                                          g_param_spec_string ("status",
3225                                                               "Status Message",
3226                                                               "The status message",
3227                                                               NULL,
3228                                                               G_PARAM_READABLE));
3229
3230         g_object_class_install_property (object_class,
3231                                          PROP_FIND_STATUS,
3232                                          g_param_spec_string ("find-status",
3233                                                               "Find Status Message",
3234                                                               "The find status message",
3235                                                               NULL,
3236                                                               G_PARAM_READABLE));
3237
3238         g_object_class_install_property (object_class,
3239                                          PROP_CONTINUOUS,
3240                                          g_param_spec_boolean ("continuous",
3241                                                                "Continuous",
3242                                                                "Continuous scrolling mode",
3243                                                                TRUE,
3244                                                                G_PARAM_READWRITE));
3245
3246         g_object_class_install_property (object_class,
3247                                          PROP_DUAL_PAGE,
3248                                          g_param_spec_boolean ("dual-page",
3249                                                                "Dual Page",
3250                                                                "Two pages visible at once",
3251                                                                FALSE,
3252                                                                G_PARAM_READWRITE));
3253         g_object_class_install_property (object_class,
3254                                          PROP_FULLSCREEN,
3255                                          g_param_spec_boolean ("fullscreen",
3256                                                                "Full Screen",
3257                                                                "Draw page in a fullscreen fashion",
3258                                                                FALSE,
3259                                                                G_PARAM_READWRITE));
3260         g_object_class_install_property (object_class,
3261                                          PROP_PRESENTATION,
3262                                          g_param_spec_boolean ("presentation",
3263                                                                "Presentation",
3264                                                                "Draw page in presentation mode",
3265                                                                TRUE,
3266                                                                G_PARAM_READWRITE));
3267
3268         g_object_class_install_property (object_class,
3269                                          PROP_SIZING_MODE,
3270                                          g_param_spec_enum ("sizing-mode",
3271                                                             "Sizing Mode",
3272                                                             "Sizing Mode",
3273                                                             EV_TYPE_SIZING_MODE,
3274                                                             EV_SIZING_FIT_WIDTH,
3275                                                             G_PARAM_READWRITE));
3276
3277         g_object_class_install_property (object_class,
3278                                          PROP_ZOOM,
3279                                          g_param_spec_double ("zoom",
3280                                                               "Zoom factor",
3281                                                               "Zoom factor",
3282                                                               0,
3283                                                               G_MAXDOUBLE,
3284                                                               1.0,
3285                                                               G_PARAM_READWRITE));
3286         g_object_class_install_property (object_class,
3287                                          PROP_ROTATION,
3288                                          g_param_spec_double ("rotation",
3289                                                               "Rotation",
3290                                                               "Rotation",
3291                                                               0,
3292                                                               360,
3293                                                               0,
3294                                                               G_PARAM_READWRITE));
3295         g_object_class_install_property (object_class,
3296                                          PROP_HAS_SELECTION,
3297                                          g_param_spec_boolean ("has-selection",
3298                                                                "Has selection",
3299                                                                "The view has selections",
3300                                                                FALSE,
3301                                                                G_PARAM_READABLE));
3302
3303         binding_set = gtk_binding_set_by_class (class);
3304
3305         add_scroll_binding_keypad (binding_set, GDK_Left,  0, EV_SCROLL_STEP_BACKWARD, TRUE);
3306         add_scroll_binding_keypad (binding_set, GDK_Right, 0, EV_SCROLL_STEP_FORWARD,  TRUE);
3307         add_scroll_binding_keypad (binding_set, GDK_Left,  GDK_MOD1_MASK, EV_SCROLL_STEP_DOWN, TRUE);
3308         add_scroll_binding_keypad (binding_set, GDK_Right, GDK_MOD1_MASK, EV_SCROLL_STEP_UP,  TRUE);
3309         add_scroll_binding_keypad (binding_set, GDK_Up,    0, EV_SCROLL_STEP_BACKWARD, FALSE);
3310         add_scroll_binding_keypad (binding_set, GDK_Down,  0, EV_SCROLL_STEP_FORWARD,  FALSE);
3311         add_scroll_binding_keypad (binding_set, GDK_Up,    GDK_MOD1_MASK, EV_SCROLL_STEP_DOWN, FALSE);
3312         add_scroll_binding_keypad (binding_set, GDK_Down,  GDK_MOD1_MASK, EV_SCROLL_STEP_UP,  FALSE);
3313 }
3314
3315 static void
3316 ev_view_init (EvView *view)
3317 {
3318         GTK_WIDGET_SET_FLAGS (view, GTK_CAN_FOCUS);
3319
3320         view->spacing = 5;
3321         view->scale = 1.0;
3322         view->current_page = 0;
3323         view->pressed_button = -1;
3324         view->cursor = EV_VIEW_CURSOR_NORMAL;
3325         view->drag_info.in_drag = FALSE;
3326         view->selection_info.selections = NULL;
3327         view->selection_info.in_selection = FALSE;
3328         view->selection_info.in_drag = FALSE;
3329         view->selection_mode = EV_VIEW_SELECTION_TEXT;
3330         view->continuous = TRUE;
3331         view->dual_page = FALSE;
3332         view->presentation = FALSE;
3333         view->presentation_state = EV_PRESENTATION_NORMAL;
3334         view->fullscreen = FALSE;
3335         view->sizing_mode = EV_SIZING_FIT_WIDTH;
3336         view->pending_scroll = SCROLL_TO_KEEP_POSITION;
3337         view->jump_to_find_result = TRUE;
3338
3339         gtk_drag_dest_set (GTK_WIDGET (view),
3340                            GTK_DEST_DEFAULT_ALL,
3341                            view_drop_targets,
3342                            G_N_ELEMENTS (view_drop_targets),
3343                            GDK_ACTION_COPY);
3344 }
3345
3346 /*** Callbacks ***/
3347
3348 static void
3349 find_changed_cb (EvDocument *document, int page, EvView *view)
3350 {
3351         double percent;
3352         int n_pages;
3353
3354         percent = ev_document_find_get_progress
3355                         (EV_DOCUMENT_FIND (view->document));
3356         n_pages = ev_page_cache_get_n_pages (view->page_cache);
3357
3358         if (view->jump_to_find_result == TRUE) {
3359                 jump_to_find_page (view, EV_VIEW_FIND_NEXT, 0);
3360                 jump_to_find_result (view);
3361         }
3362         update_find_status_message (view, percent * n_pages >= n_pages - 1 );
3363         if (view->current_page == page)
3364                 gtk_widget_queue_draw (GTK_WIDGET (view));
3365 }
3366
3367 static void
3368 job_finished_cb (EvPixbufCache *pixbuf_cache,
3369                  EvView        *view)
3370 {
3371         gtk_widget_queue_draw (GTK_WIDGET (view));
3372 }
3373
3374 static void
3375 page_changed_cb (EvPageCache *page_cache,
3376                  int          new_page,
3377                  EvView      *view)
3378 {
3379         if (view->current_page != new_page) {
3380                 view->current_page = new_page;
3381                 view->pending_scroll = SCROLL_TO_PAGE_POSITION;
3382                 if (view->presentation)
3383                         ev_view_presentation_transition_start (view);
3384                 gtk_widget_queue_resize (GTK_WIDGET (view));
3385         } else {
3386                 gtk_widget_queue_draw (GTK_WIDGET (view));
3387         }
3388
3389         if (EV_IS_DOCUMENT_FIND (view->document)) {
3390                 view->find_result = 0;
3391                 update_find_status_message (view, TRUE);
3392         }
3393 }
3394
3395 static void on_adjustment_value_changed (GtkAdjustment  *adjustment,
3396                                          EvView *view)
3397 {
3398         int dx = 0, dy = 0;
3399
3400         if (! GTK_WIDGET_REALIZED (view))
3401                 return;
3402
3403         if (view->hadjustment) {
3404                 dx = view->scroll_x - (int) view->hadjustment->value;
3405                 view->scroll_x = (int) view->hadjustment->value;
3406         } else {
3407                 view->scroll_x = 0;
3408         }
3409
3410         if (view->vadjustment) {
3411                 dy = view->scroll_y - (int) view->vadjustment->value;
3412                 view->scroll_y = (int) view->vadjustment->value;
3413         } else {
3414                 view->scroll_y = 0;
3415         }
3416
3417
3418         if (view->pending_resize)
3419                 gtk_widget_queue_draw (GTK_WIDGET (view));
3420         else
3421                 gdk_window_scroll (GTK_WIDGET (view)->window, dx, dy);
3422
3423
3424         if (view->document)
3425                 view_update_range_and_current_page (view);
3426 }
3427
3428 GtkWidget*
3429 ev_view_new (void)
3430 {
3431         GtkWidget *view;
3432
3433         view = g_object_new (EV_TYPE_VIEW, NULL);
3434
3435         return view;
3436 }
3437
3438 static void
3439 setup_caches (EvView *view)
3440 {
3441         view->page_cache = ev_page_cache_get (view->document);
3442         g_signal_connect (view->page_cache, "page-changed", G_CALLBACK (page_changed_cb), view);
3443         view->pixbuf_cache = ev_pixbuf_cache_new (GTK_WIDGET (view), view->document);
3444         g_signal_connect (view->pixbuf_cache, "job-finished", G_CALLBACK (job_finished_cb), view);
3445 }
3446
3447 static void
3448 clear_caches (EvView *view)
3449 {
3450         if (view->pixbuf_cache) {
3451                 g_object_unref (view->pixbuf_cache);
3452                 view->pixbuf_cache = NULL;
3453         }
3454
3455         if (view->page_cache) {
3456                 view->page_cache = NULL;
3457         }
3458 }
3459
3460 void
3461 ev_view_set_loading (EvView       *view,
3462                      gboolean      loading)
3463 {
3464         view->loading = loading;
3465         gtk_widget_queue_draw (GTK_WIDGET (view));
3466 }
3467
3468 void
3469 ev_view_set_document (EvView     *view,
3470                       EvDocument *document)
3471 {
3472         g_return_if_fail (EV_IS_VIEW (view));
3473
3474         view->loading = FALSE;
3475
3476         if (document != view->document) {
3477                 clear_caches (view);
3478
3479                 if (view->document) {
3480                         g_signal_handlers_disconnect_by_func (view->document,
3481                                                               find_changed_cb,
3482                                                               view);
3483                         g_object_unref (view->document);
3484                         view->page_cache = NULL;
3485
3486                 }
3487
3488                 view->document = document;
3489                 view->find_result = 0;
3490
3491                 if (view->document) {
3492                         g_object_ref (view->document);
3493                         if (EV_IS_DOCUMENT_FIND (view->document)) {
3494                                 g_signal_connect (view->document,
3495                                                   "find_changed",
3496                                                   G_CALLBACK (find_changed_cb),
3497                                                   view);
3498                         }
3499
3500                         setup_caches (view);
3501                 }
3502
3503                 gtk_widget_queue_resize (GTK_WIDGET (view));
3504         }
3505 }
3506
3507 /*** Zoom and sizing mode ***/
3508
3509 #define EPSILON 0.0000001
3510 void
3511 ev_view_set_zoom (EvView   *view,
3512                   double    factor,
3513                   gboolean  relative)
3514 {
3515         double scale;
3516
3517         if (relative)
3518                 scale = view->scale * factor;
3519         else
3520                 scale = factor;
3521
3522         scale = CLAMP (scale, view->min_scale, view->max_scale);
3523
3524         if (ABS (view->scale - scale) < EPSILON)
3525                 return;
3526
3527         if (view->loading_text) {
3528                 cairo_surface_destroy (view->loading_text);
3529                 view->loading_text = NULL;
3530         }
3531
3532         view->scale = scale;
3533         view->pending_resize = TRUE;
3534
3535         gtk_widget_queue_resize (GTK_WIDGET (view));
3536
3537         g_object_notify (G_OBJECT (view), "zoom");
3538 }
3539
3540 double
3541 ev_view_get_zoom (EvView *view)
3542 {
3543         return view->scale;
3544 }
3545
3546 void
3547 ev_view_set_screen_dpi (EvView  *view,
3548                         gdouble  dpi)
3549 {
3550         g_return_if_fail (EV_IS_VIEW (view));
3551         g_return_if_fail (dpi > 0);
3552
3553         view->dpi = dpi;
3554         view->min_scale = MIN_SCALE * dpi / 72.0;
3555         view->max_scale = MAX_SCALE * dpi / 72.0;
3556 }
3557
3558 gboolean
3559 ev_view_get_continuous (EvView *view)
3560 {
3561         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
3562
3563         return view->continuous;
3564 }
3565
3566 void
3567 ev_view_set_continuous (EvView   *view,
3568                         gboolean  continuous)
3569 {
3570         g_return_if_fail (EV_IS_VIEW (view));
3571
3572         continuous = continuous != FALSE;
3573
3574         if (view->continuous != continuous) {
3575                 view->continuous = continuous;
3576                 view->pending_scroll = SCROLL_TO_PAGE_POSITION;
3577                 gtk_widget_queue_resize (GTK_WIDGET (view));
3578         }
3579
3580         g_object_notify (G_OBJECT (view), "continuous");
3581 }
3582
3583 gboolean
3584 ev_view_get_dual_page (EvView *view)
3585 {
3586         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
3587
3588         return view->dual_page;
3589 }
3590
3591 void
3592 ev_view_set_dual_page (EvView   *view,
3593                        gboolean  dual_page)
3594 {
3595         g_return_if_fail (EV_IS_VIEW (view));
3596
3597         dual_page = dual_page != FALSE;
3598
3599         if (view->dual_page == dual_page)
3600                 return;
3601
3602         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
3603         view->dual_page = dual_page;
3604         /* FIXME: if we're keeping the pixbuf cache around, we should extend the
3605          * preload_cache_size to be 2 if dual_page is set.
3606          */
3607         gtk_widget_queue_resize (GTK_WIDGET (view));
3608
3609         g_object_notify (G_OBJECT (view), "dual-page");
3610 }
3611
3612 void
3613 ev_view_set_fullscreen (EvView   *view,
3614                          gboolean  fullscreen)
3615 {
3616         g_return_if_fail (EV_IS_VIEW (view));
3617
3618         fullscreen = fullscreen != FALSE;
3619
3620         if (view->fullscreen == fullscreen)
3621                 return;
3622
3623         view->fullscreen = fullscreen;
3624         gtk_widget_queue_resize (GTK_WIDGET (view));
3625
3626         g_object_notify (G_OBJECT (view), "fullscreen");
3627 }
3628
3629 gboolean
3630 ev_view_get_fullscreen (EvView *view)
3631 {
3632         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
3633
3634         return view->fullscreen;
3635 }
3636
3637 void
3638 ev_view_set_presentation (EvView   *view,
3639                           gboolean  presentation)
3640 {
3641         g_return_if_fail (EV_IS_VIEW (view));
3642
3643         presentation = presentation != FALSE;
3644
3645         if (view->presentation == presentation)
3646                 return;
3647
3648         if (!presentation)
3649                 view->presentation_state = EV_PRESENTATION_NORMAL;
3650
3651         view->presentation = presentation;
3652         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
3653
3654         if (presentation) {
3655                 view->sizing_mode_saved = view->sizing_mode;
3656                 view->scale_saved = view->scale;
3657                 ev_view_set_sizing_mode (view, EV_SIZING_BEST_FIT);
3658         } else {
3659                 ev_view_set_sizing_mode (view, view->sizing_mode_saved);
3660                 ev_view_set_zoom (view, view->scale_saved, FALSE);
3661         }
3662
3663         gtk_widget_queue_resize (GTK_WIDGET (view));
3664
3665         if (presentation)
3666                 ev_view_presentation_transition_start (view);
3667         else
3668                 ev_view_presentation_transition_stop (view);
3669
3670         if (GTK_WIDGET_REALIZED (view)) {
3671                 if (view->presentation)
3672                         gdk_window_set_background (GTK_WIDGET(view)->window,
3673                                                    &GTK_WIDGET (view)->style->black);
3674                 else
3675                         gdk_window_set_background (GTK_WIDGET(view)->window,
3676                                                    &GTK_WIDGET (view)->style->mid [GTK_STATE_NORMAL]);
3677         }
3678
3679         g_object_notify (G_OBJECT (view), "presentation");
3680 }
3681
3682 gboolean
3683 ev_view_get_presentation (EvView *view)
3684 {
3685         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
3686
3687         return view->presentation;
3688 }
3689
3690 static gboolean
3691 transition_next_page (EvView *view)
3692 {
3693         ev_view_next_page (view);
3694
3695         return FALSE;
3696 }
3697
3698 static void
3699 ev_view_presentation_transition_stop (EvView *view)
3700 {
3701         if (view->trans_timeout_id > 0)
3702                 g_source_remove (view->trans_timeout_id);
3703         view->trans_timeout_id = 0;
3704 }
3705
3706 static void
3707 ev_view_presentation_transition_start (EvView *view)
3708 {
3709         gdouble duration;
3710
3711         if (!EV_IS_DOCUMENT_TRANSITION (view->document))
3712                 return;
3713
3714         ev_view_presentation_transition_stop (view);
3715
3716         duration = ev_document_transition_get_page_duration (EV_DOCUMENT_TRANSITION (view->document),
3717                                                              view->current_page);
3718         if (duration > 0)
3719                 view->trans_timeout_id = g_timeout_add (duration * 1000,
3720                                                         (GSourceFunc) transition_next_page,
3721                                                         view);
3722 }
3723
3724 void
3725 ev_view_set_sizing_mode (EvView       *view,
3726                          EvSizingMode  sizing_mode)
3727 {
3728         g_return_if_fail (EV_IS_VIEW (view));
3729
3730         if (view->sizing_mode == sizing_mode)
3731                 return;
3732
3733         view->sizing_mode = sizing_mode;
3734         gtk_widget_queue_resize (GTK_WIDGET (view));
3735
3736         g_object_notify (G_OBJECT (view), "sizing-mode");
3737 }
3738
3739 EvSizingMode
3740 ev_view_get_sizing_mode (EvView *view)
3741 {
3742         g_return_val_if_fail (EV_IS_VIEW (view), EV_SIZING_FREE);
3743
3744         return view->sizing_mode;
3745 }
3746
3747 gboolean
3748 ev_view_can_zoom_in (EvView *view)
3749 {
3750         return view->scale * ZOOM_IN_FACTOR <= view->max_scale;
3751 }
3752
3753 gboolean
3754 ev_view_can_zoom_out (EvView *view)
3755 {
3756         return view->scale * ZOOM_OUT_FACTOR >= view->min_scale;
3757 }
3758
3759 void
3760 ev_view_zoom_in (EvView *view)
3761 {
3762         g_return_if_fail (view->sizing_mode == EV_SIZING_FREE);
3763
3764         view->pending_scroll = SCROLL_TO_CENTER;
3765         ev_view_set_zoom (view, ZOOM_IN_FACTOR, TRUE);
3766 }
3767
3768 void
3769 ev_view_zoom_out (EvView *view)
3770 {
3771         g_return_if_fail (view->sizing_mode == EV_SIZING_FREE);
3772
3773         view->pending_scroll = SCROLL_TO_CENTER;
3774         ev_view_set_zoom (view, ZOOM_OUT_FACTOR, TRUE);
3775 }
3776
3777 void
3778 ev_view_rotate_right (EvView *view)
3779 {
3780         int rotation = view->rotation + 90;
3781
3782         if (rotation >= 360) {
3783                 rotation -= 360;
3784         }
3785
3786         ev_view_set_rotation (view, rotation);
3787 }
3788
3789 void
3790 ev_view_rotate_left (EvView *view)
3791 {
3792         int rotation = view->rotation - 90;
3793
3794         if (rotation < 0) {
3795                 rotation += 360;
3796         }
3797
3798         ev_view_set_rotation (view, rotation);
3799 }
3800
3801 void
3802 ev_view_set_rotation (EvView *view, int rotation)
3803 {
3804         view->rotation = rotation;
3805
3806         if (view->pixbuf_cache) {
3807                 ev_pixbuf_cache_clear (view->pixbuf_cache);
3808                 gtk_widget_queue_resize (GTK_WIDGET (view));
3809         }
3810
3811         if (rotation != 0)
3812                 clear_selection (view);
3813
3814         g_object_notify (G_OBJECT (view), "rotation");
3815 }
3816
3817 int
3818 ev_view_get_rotation (EvView *view)
3819 {
3820         return view->rotation;
3821 }
3822
3823 static double
3824 zoom_for_size_fit_width (int doc_width,
3825                          int doc_height,
3826                          int target_width,
3827                          int target_height,
3828                          int vsb_width)
3829 {
3830         double scale;
3831
3832         scale = (double)target_width / doc_width;
3833
3834         if (doc_height * scale > target_height)
3835                 scale = (double) (target_width - vsb_width) / doc_width;
3836
3837         return scale;
3838 }
3839
3840 static double
3841 zoom_for_size_fit_height (int doc_width,
3842                           int doc_height,
3843                           int target_width,
3844                           int target_height,
3845                           int vsb_height)
3846 {
3847         double scale;
3848
3849         scale = (double)target_height / doc_height;
3850
3851         if (doc_width * scale > target_width)
3852                 scale = (double) (target_height - vsb_height) / doc_height;
3853
3854         return scale;
3855 }
3856
3857 static double
3858 zoom_for_size_best_fit (int doc_width,
3859                         int doc_height,
3860                         int target_width,
3861                         int target_height,
3862                         int vsb_width,
3863                         int hsb_width)
3864 {
3865         double w_scale;
3866         double h_scale;
3867
3868         w_scale = (double)target_width / doc_width;
3869         h_scale = (double)target_height / doc_height;
3870
3871         if (doc_height * w_scale > target_height)
3872                 w_scale = (double) (target_width - vsb_width) / doc_width;
3873         if (doc_width * h_scale > target_width)
3874                 h_scale = (double) (target_height - hsb_width) / doc_height;
3875
3876         return MIN (w_scale, h_scale);
3877 }
3878
3879
3880 static void
3881 ev_view_zoom_for_size_presentation (EvView *view,
3882                                     int     width,
3883                                     int     height)
3884 {
3885         int doc_width, doc_height;
3886         gdouble scale;
3887
3888         ev_page_cache_get_size (view->page_cache,
3889                                 view->current_page,
3890                                 view->rotation,
3891                                 1.0,
3892                                 &doc_width,
3893                                 &doc_height);
3894         scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, 0, 0);
3895         ev_view_set_zoom (view, scale, FALSE);
3896 }
3897
3898 static void
3899 ev_view_zoom_for_size_continuous_and_dual_page (EvView *view,
3900                            int     width,
3901                            int     height,
3902                            int     vsb_width,
3903                            int     hsb_height)
3904 {
3905         int doc_width, doc_height;
3906         GtkBorder border;
3907         gdouble scale;
3908
3909         ev_page_cache_get_max_width (view->page_cache,
3910                                      view->rotation,
3911                                      1.0,
3912                                      &doc_width);
3913         ev_page_cache_get_max_height (view->page_cache,
3914                                       view->rotation,
3915                                       1.0,
3916                                       &doc_height);
3917         compute_border (view, doc_width, doc_height, &border);
3918
3919         doc_width = doc_width * 2;
3920         width -= (2 * (border.left + border.right) + 3 * view->spacing);
3921         height -= (border.top + border.bottom + 2 * view->spacing - 1);
3922
3923         /* FIXME: We really need to calculate the overall height here, not the
3924          * page height.  We assume there's always a vertical scrollbar for
3925          * now.  We need to fix this. */
3926         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
3927                 scale = zoom_for_size_fit_width (doc_width, doc_height, width - vsb_width, height, 0);
3928         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
3929                 scale = zoom_for_size_best_fit (doc_width, doc_height, width - vsb_width, height, 0, hsb_height);
3930         else
3931                 g_assert_not_reached ();
3932
3933         ev_view_set_zoom (view, scale, FALSE);
3934 }
3935
3936 static void
3937 ev_view_zoom_for_size_continuous (EvView *view,
3938                                   int     width,
3939                                   int     height,
3940                                   int     vsb_width,
3941                                   int     hsb_height)
3942 {
3943         int doc_width, doc_height;
3944         GtkBorder border;
3945         gdouble scale;
3946
3947         ev_page_cache_get_max_width (view->page_cache,
3948                                      view->rotation,
3949                                      1.0,
3950                                      &doc_width);
3951         ev_page_cache_get_max_height (view->page_cache,
3952                                       view->rotation,
3953                                       1.0,
3954                                       &doc_height);
3955         compute_border (view, doc_width, doc_height, &border);
3956
3957         width -= (border.left + border.right + 2 * view->spacing);
3958         height -= (border.top + border.bottom + 2 * view->spacing - 1);
3959
3960         /* FIXME: We really need to calculate the overall height here, not the
3961          * page height.  We assume there's always a vertical scrollbar for
3962          * now.  We need to fix this. */
3963         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
3964                 scale = zoom_for_size_fit_width (doc_width, doc_height, width - vsb_width, height, 0);
3965         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
3966                 scale = zoom_for_size_best_fit (doc_width, doc_height, width - vsb_width, height, 0, hsb_height);
3967         else
3968                 g_assert_not_reached ();
3969
3970         ev_view_set_zoom (view, scale, FALSE);
3971 }
3972
3973 static void
3974 ev_view_zoom_for_size_dual_page (EvView *view,
3975                                  int     width,
3976                                  int     height,
3977                                  int     vsb_width,
3978                                  int     hsb_height)
3979 {
3980         GtkBorder border;
3981         gint doc_width, doc_height;
3982         gdouble scale;
3983         gint other_page;
3984
3985         other_page = view->current_page ^ 1;
3986
3987         /* Find the largest of the two. */
3988         ev_page_cache_get_size (view->page_cache,
3989                                 view->current_page,
3990                                 view->rotation,
3991                                 1.0,
3992                                 &doc_width, &doc_height);
3993
3994         if (other_page < ev_page_cache_get_n_pages (view->page_cache)) {
3995                 gint width_2, height_2;
3996                 ev_page_cache_get_size (view->page_cache,
3997                                         other_page,
3998                                         view->rotation,
3999                                         1.0,
4000                                         &width_2, &height_2);
4001                 if (width_2 > doc_width)
4002                         doc_width = width_2;
4003                 if (height_2 > doc_height)
4004                         doc_height = height_2;
4005         }
4006         compute_border (view, doc_width, doc_height, &border);
4007
4008         doc_width = doc_width * 2;
4009         width -= ((border.left + border.right)* 2 + 3 * view->spacing);
4010         height -= (border.top + border.bottom + 2 * view->spacing);
4011
4012         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
4013                 scale = zoom_for_size_fit_width (doc_width, doc_height, width, height, vsb_width);
4014         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
4015                 scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, vsb_width, hsb_height);
4016         else
4017                 g_assert_not_reached ();
4018
4019         ev_view_set_zoom (view, scale, FALSE);
4020 }
4021
4022 static void
4023 ev_view_zoom_for_size_single_page (EvView *view,
4024                                    int     width,
4025                                    int     height,
4026                                    int     vsb_width,
4027                                    int     hsb_height)
4028 {
4029         int doc_width, doc_height;
4030         GtkBorder border;
4031         gdouble scale;
4032
4033         ev_page_cache_get_size (view->page_cache,
4034                                 view->current_page,
4035                                 view->rotation,
4036                                 1.0,
4037                                 &doc_width,
4038                                 &doc_height);
4039         /* Get an approximate border */
4040         compute_border (view, width, height, &border);
4041
4042         width -= (border.left + border.right + 2 * view->spacing);
4043         height -= (border.top + border.bottom + 2 * view->spacing);
4044
4045         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
4046                 scale = zoom_for_size_fit_width (doc_width, doc_height, width, height, vsb_width);
4047         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
4048                 scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, vsb_width, hsb_height);
4049         else
4050                 g_assert_not_reached ();
4051
4052         ev_view_set_zoom (view, scale, FALSE);
4053 }
4054
4055 void
4056 ev_view_set_zoom_for_size (EvView *view,
4057                            int     width,
4058                            int     height,
4059                            int     vsb_width,
4060                            int     hsb_height)
4061 {
4062         g_return_if_fail (view->sizing_mode == EV_SIZING_FIT_WIDTH ||
4063                           view->sizing_mode == EV_SIZING_BEST_FIT);
4064         g_return_if_fail (width >= 0);
4065         g_return_if_fail (height >= 0);
4066
4067         if (view->document == NULL)
4068                 return;
4069
4070         if (view->presentation)
4071                 ev_view_zoom_for_size_presentation (view, width, height);
4072         else if (view->continuous && view->dual_page)
4073                 ev_view_zoom_for_size_continuous_and_dual_page (view, width, height, vsb_width, hsb_height);
4074         else if (view->continuous)
4075                 ev_view_zoom_for_size_continuous (view, width, height, vsb_width, hsb_height);
4076         else if (view->dual_page)
4077                 ev_view_zoom_for_size_dual_page (view, width, height, vsb_width, hsb_height);
4078         else
4079                 ev_view_zoom_for_size_single_page (view, width, height, vsb_width, hsb_height);
4080 }
4081
4082 /*** Status text messages ***/
4083
4084 const char *
4085 ev_view_get_status (EvView *view)
4086 {
4087         g_return_val_if_fail (EV_IS_VIEW (view), NULL);
4088
4089         return view->status;
4090 }
4091
4092 static void
4093 ev_view_set_status (EvView *view, const char *message)
4094 {
4095         g_return_if_fail (EV_IS_VIEW (view));
4096
4097         if (message != view->status) {
4098                 g_free (view->status);
4099                 view->status = g_strdup (message);
4100                 g_object_notify (G_OBJECT (view), "status");
4101         }
4102 }
4103
4104 static void
4105 update_find_status_message (EvView *view, gboolean this_page)
4106 {
4107         char *message;
4108
4109         if (this_page) {
4110                 int results;
4111
4112                 results = ev_document_find_get_n_results
4113                                 (EV_DOCUMENT_FIND (view->document),
4114                                  view->current_page);
4115                 /* TRANS: Sometimes this could be better translated as
4116                    "%d hit(s) on this page".  Therefore this string
4117                    contains plural cases. */
4118                 message = g_strdup_printf (ngettext ("%d found on this page",
4119                                                      "%d found on this page",
4120                                                      results),
4121                                            results);
4122         } else {
4123                 double percent;
4124
4125                 percent = ev_document_find_get_progress
4126                                 (EV_DOCUMENT_FIND (view->document));
4127                 message = g_strdup_printf (_("%3d%% remaining to search"),
4128                                            (int) ((1.0 - percent) * 100));
4129
4130         }
4131         ev_view_set_find_status (view, message);
4132         g_free (message);
4133 }
4134
4135 const char *
4136 ev_view_get_find_status (EvView *view)
4137 {
4138         g_return_val_if_fail (EV_IS_VIEW (view), NULL);
4139
4140         return view->find_status;
4141 }
4142
4143 static void
4144 ev_view_set_find_status (EvView *view, const char *message)
4145 {
4146         g_return_if_fail (EV_IS_VIEW (view));
4147
4148         g_free (view->find_status);
4149         view->find_status = g_strdup (message);
4150         g_object_notify (G_OBJECT (view), "find-status");
4151 }
4152
4153 /*** Find ***/
4154
4155 static void
4156 jump_to_find_result (EvView *view)
4157 {
4158         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
4159         EvRectangle rect;
4160         GdkRectangle view_rect;
4161         int n_results;
4162         int page = view->current_page;
4163
4164         n_results = ev_document_find_get_n_results (find, page);
4165
4166         if (n_results > 0  && view->find_result < n_results) {
4167                 ev_document_find_get_result
4168                         (find, page, view->find_result, &rect);
4169
4170                 doc_rect_to_view_rect (view, page, &rect, &view_rect);
4171                 ensure_rectangle_is_visible (view, &view_rect);
4172         }
4173 }
4174
4175 /**
4176  * jump_to_find_page
4177  * @view: #EvView instance
4178  * @direction: Direction to look
4179  * @shift: Shift from current page
4180  *
4181  * Jumps to the first page that has occurences of searched word.
4182  * Uses a direction where to look and a shift from current page.
4183  *
4184  */
4185 static void
4186 jump_to_find_page (EvView *view, EvViewFindDirection direction, gint shift)
4187 {
4188         int n_pages, i;
4189
4190         n_pages = ev_page_cache_get_n_pages (view->page_cache);
4191
4192         for (i = 0; i < n_pages; i++) {
4193                 int has_results;
4194                 int page;
4195
4196                 if (direction == EV_VIEW_FIND_NEXT)
4197                         page = view->current_page + i;
4198                 else
4199                         page = view->current_page - i;
4200                 page += shift;
4201
4202                 if (page >= n_pages) {
4203                         page = page - n_pages;
4204                 }
4205                 if (page < 0)
4206                         page = page + n_pages;
4207
4208                 has_results = ev_document_find_page_has_results
4209                                 (EV_DOCUMENT_FIND (view->document), page);
4210                 if (has_results == -1) {
4211                         break;
4212                 } else if (has_results == 1) {
4213                         ev_page_cache_set_current_page (view->page_cache, page);
4214                         break;
4215                 }
4216         }
4217 }
4218
4219 gboolean
4220 ev_view_can_find_next (EvView *view)
4221 {
4222         if (EV_IS_DOCUMENT_FIND (view->document)) {
4223                 EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
4224                 int i, n_pages;
4225
4226                 n_pages = ev_page_cache_get_n_pages (view->page_cache);
4227                 for (i = 0; i < n_pages; i++) {
4228                         if (ev_document_find_get_n_results (find, i) > 0) {
4229                                 return TRUE;
4230                         }
4231                 }
4232         }
4233
4234         return FALSE;
4235 }
4236
4237 void
4238 ev_view_find_next (EvView *view)
4239 {
4240         int n_results, n_pages;
4241         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
4242
4243         n_results = ev_document_find_get_n_results (find, view->current_page);
4244
4245         n_pages = ev_page_cache_get_n_pages (view->page_cache);
4246
4247         view->find_result++;
4248
4249         if (view->find_result >= n_results) {
4250
4251                 view->find_result = 0;
4252                 jump_to_find_page (view, EV_VIEW_FIND_NEXT, 1);
4253                 jump_to_find_result (view);
4254         } else {
4255                 jump_to_find_result (view);
4256                 gtk_widget_queue_draw (GTK_WIDGET (view));
4257         }
4258 }
4259
4260 gboolean
4261 ev_view_can_find_previous (EvView *view)
4262 {
4263         if (EV_IS_DOCUMENT_FIND (view->document)) {
4264                 EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
4265                 int i, n_pages;
4266
4267                 n_pages = ev_page_cache_get_n_pages (view->page_cache);
4268                 for (i = n_pages - 1; i >= 0; i--) {
4269                         if (ev_document_find_get_n_results (find, i) > 0) {
4270                                 return TRUE;
4271                         }
4272                 }
4273         }
4274
4275         return FALSE;
4276 }
4277 void
4278 ev_view_find_previous (EvView *view)
4279 {
4280         int n_results, n_pages;
4281         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
4282         EvPageCache *page_cache;
4283
4284         page_cache = ev_page_cache_get (view->document);
4285
4286         n_results = ev_document_find_get_n_results (find, view->current_page);
4287
4288         n_pages = ev_page_cache_get_n_pages (page_cache);
4289
4290         view->find_result--;
4291
4292         if (view->find_result < 0) {
4293
4294                 jump_to_find_page (view, EV_VIEW_FIND_PREV, -1);
4295                 view->find_result = ev_document_find_get_n_results (find, view->current_page) - 1;
4296                 jump_to_find_result (view);
4297         } else {
4298                 jump_to_find_result (view);
4299                 gtk_widget_queue_draw (GTK_WIDGET (view));
4300         }
4301 }
4302
4303 void ev_view_search_changed (EvView *view)
4304 {
4305         /* search string has changed, focus on new search result */
4306         view->jump_to_find_result = TRUE;
4307 }
4308
4309 /*** Selections ***/
4310
4311 /* compute_new_selection_rect/text calculates the area currently selected by
4312  * view_rect.  each handles a different mode;
4313  */
4314 static GList *
4315 compute_new_selection_rect (EvView       *view,
4316                             GdkPoint     *start,
4317                             GdkPoint     *stop)
4318 {
4319         GdkRectangle view_rect;
4320         int n_pages, i;
4321         GList *list = NULL;
4322
4323         g_assert (view->selection_mode == EV_VIEW_SELECTION_RECTANGLE);
4324
4325         view_rect.x = MIN (start->x, stop->x);
4326         view_rect.y = MIN (start->y, stop->y);
4327         view_rect.width = MAX (start->x, stop->x) - view_rect.x;
4328         view_rect.width = MAX (start->y, stop->y) - view_rect.y;
4329
4330         n_pages = ev_page_cache_get_n_pages (view->page_cache);
4331
4332         for (i = 0; i < n_pages; i++) {
4333                 GdkRectangle page_area;
4334                 GtkBorder border;
4335
4336                 if (get_page_extents (view, i, &page_area, &border)) {
4337                         GdkRectangle overlap;
4338
4339                         if (gdk_rectangle_intersect (&page_area, &view_rect, &overlap)) {
4340                                 EvViewSelection *selection;
4341
4342                                 selection = g_new0 (EvViewSelection, 1);
4343                                 selection->page = i;
4344                                 view_rect_to_doc_rect (view, &overlap, &page_area,
4345                                                        &(selection->rect));
4346
4347                                 list = g_list_append (list, selection);
4348                         }
4349                 }
4350         }
4351
4352         return list;
4353 }
4354
4355 static gboolean
4356 gdk_rectangle_point_in (GdkRectangle *rectangle,
4357                         GdkPoint     *point)
4358 {
4359         return rectangle->x <= point->x &&
4360                 rectangle->y <= point->y &&
4361                 point->x < rectangle->x + rectangle->width &&
4362                 point->y < rectangle->y + rectangle->height;
4363 }
4364
4365 static GList *
4366 compute_new_selection_text (EvView   *view,
4367                             GdkPoint *start,
4368                             GdkPoint *stop)
4369 {
4370         int n_pages, i, first, last;
4371         GList *list = NULL;
4372         EvViewSelection *selection;
4373         gint width, height;
4374         int start_page, end_page;
4375
4376         g_assert (view->selection_mode == EV_VIEW_SELECTION_TEXT);
4377
4378         n_pages = ev_page_cache_get_n_pages (view->page_cache);
4379
4380         /* First figure out the range of pages the selection
4381          * affects. */
4382         first = n_pages;
4383         last = 0;
4384         if (view->continuous) {
4385                 start_page = 0;
4386                 end_page = n_pages;
4387         } else if (view->dual_page) {
4388                 start_page = view->start_page;
4389                 end_page = view->end_page + 1;
4390         } else {
4391                 start_page = view->current_page;
4392                 end_page = view->current_page + 1;
4393         }
4394
4395         for (i = start_page; i < end_page; i++) {
4396                 GdkRectangle page_area;
4397                 GtkBorder border;
4398
4399                 get_page_extents (view, i, &page_area, &border);
4400                 if (gdk_rectangle_point_in (&page_area, start) ||
4401                     gdk_rectangle_point_in (&page_area, stop)) {
4402                         if (first == n_pages)
4403                                 first = i;
4404                         last = i;
4405                 }
4406
4407         }
4408
4409
4410
4411         /* Now create a list of EvViewSelection's for the affected
4412          * pages.  This could be an empty list, a list of just one
4413          * page or a number of pages.*/
4414         for (i = first; i < last + 1; i++) {
4415                 GdkRectangle page_area;
4416                 GtkBorder border;
4417                 GdkPoint *point;
4418
4419                 ev_page_cache_get_size (view->page_cache, i,
4420                                         view->rotation,
4421                                         1.0, &width, &height);
4422
4423                 selection = g_new0 (EvViewSelection, 1);
4424                 selection->page = i;
4425                 selection->rect.x1 = selection->rect.y1 = 0;
4426                 selection->rect.x2 = width;
4427                 selection->rect.y2 = height;
4428
4429                 get_page_extents (view, i, &page_area, &border);
4430
4431                 if (gdk_rectangle_point_in (&page_area, start))
4432                         point = start;
4433                 else
4434                         point = stop;
4435
4436                 if (i == first)
4437                         view_point_to_doc_point (view, point, &page_area,
4438                                                  &selection->rect.x1,
4439                                                  &selection->rect.y1);
4440
4441                 /* If the selection is contained within just one page,
4442                  * make sure we don't write 'start' into both points
4443                  * in selection->rect. */
4444                 if (first == last)
4445                         point = stop;
4446
4447                 if (i == last)
4448                         view_point_to_doc_point (view, point, &page_area,
4449                                                  &selection->rect.x2,
4450                                                  &selection->rect.y2);
4451
4452                 list = g_list_append (list, selection);
4453         }
4454
4455         return list;
4456 }
4457
4458 /* This function takes the newly calculated list, and figures out which regions
4459  * have changed.  It then queues a redraw approporiately.
4460  */
4461 static void
4462 merge_selection_region (EvView *view,
4463                         GList  *new_list)
4464 {
4465         GList *old_list;
4466         GList *new_list_ptr, *old_list_ptr;
4467
4468         /* Update the selection */
4469         old_list = ev_pixbuf_cache_get_selection_list (view->pixbuf_cache);
4470         g_list_foreach (view->selection_info.selections, (GFunc)selection_free, NULL);
4471         view->selection_info.selections = new_list;
4472         ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, new_list);
4473         g_object_notify (G_OBJECT (view), "has-selection");
4474
4475         new_list_ptr = new_list;
4476         old_list_ptr = old_list;
4477
4478         while (new_list_ptr || old_list_ptr) {
4479                 EvViewSelection *old_sel, *new_sel;
4480                 int cur_page;
4481                 GdkRegion *region = NULL;
4482
4483                 new_sel = (new_list_ptr) ? (new_list_ptr->data) : NULL;
4484                 old_sel = (old_list_ptr) ? (old_list_ptr->data) : NULL;
4485
4486                 /* Assume that the lists are in order, and we run through them
4487                  * comparing them, one page at a time.  We come out with the
4488                  * first page we see. */
4489                 if (new_sel && old_sel) {
4490                         if (new_sel->page < old_sel->page) {
4491                                 new_list_ptr = new_list_ptr->next;
4492                                 old_sel = NULL;
4493                         } else if (new_sel->page > old_sel->page) {
4494                                 old_list_ptr = old_list_ptr->next;
4495                                 new_sel = NULL;
4496                         } else {
4497                                 new_list_ptr = new_list_ptr->next;
4498                                 old_list_ptr = old_list_ptr->next;
4499                         }
4500                 } else if (new_sel) {
4501                         new_list_ptr = new_list_ptr->next;
4502                 } else if (old_sel) {
4503                         old_list_ptr = old_list_ptr->next;
4504                 }
4505
4506                 g_assert (new_sel || old_sel);
4507
4508                 /* is the page we're looking at on the screen?*/
4509                 cur_page = new_sel ? new_sel->page : old_sel->page;
4510                 if (cur_page < view->start_page || cur_page > view->end_page)
4511                         continue;
4512
4513                 /* seed the cache with a new page.  We are going to need the new
4514                  * region too. */
4515                 if (new_sel) {
4516                         GdkRegion *tmp_region = NULL;
4517                         ev_pixbuf_cache_get_selection_pixbuf (view->pixbuf_cache,
4518                                                               cur_page,
4519                                                               view->scale,
4520                                                               &tmp_region);
4521                         if (tmp_region) {
4522                                 new_sel->covered_region = gdk_region_copy (tmp_region);
4523                         }
4524                 }
4525
4526                 /* Now we figure out what needs redrawing */
4527                 if (old_sel && new_sel) {
4528                         if (old_sel->covered_region &&
4529                             new_sel->covered_region) {
4530                                 /* We only want to redraw the areas that have
4531                                  * changed, so we xor the old and new regions
4532                                  * and redraw if it's different */
4533                                 region = gdk_region_copy (old_sel->covered_region);
4534                                 gdk_region_xor (region, new_sel->covered_region);
4535                                 if (gdk_region_empty (region)) {
4536                                         gdk_region_destroy (region);
4537                                         region = NULL;
4538                                 }
4539                         } else if (old_sel->covered_region) {
4540                                 region = gdk_region_copy (old_sel->covered_region);
4541                         } else if (new_sel->covered_region) {
4542                                 region = gdk_region_copy (new_sel->covered_region);
4543                         }
4544                 } else if (old_sel && !new_sel) {
4545                         if (old_sel->covered_region && !gdk_region_empty (old_sel->covered_region)) {
4546                                 region = gdk_region_copy (old_sel->covered_region);
4547                         }
4548                 } else if (!old_sel && new_sel) {
4549                         if (new_sel->covered_region && !gdk_region_empty (new_sel->covered_region)) {
4550                                 region = gdk_region_copy (new_sel->covered_region);
4551                         }
4552                 } else {
4553                         g_assert_not_reached ();
4554                 }
4555
4556                 /* Redraw the damaged region! */
4557                 if (region) {
4558                         GdkRectangle page_area;
4559                         GtkBorder border;
4560
4561                         get_page_extents (view, cur_page, &page_area, &border);
4562                         gdk_region_offset (region,
4563                                            page_area.x + border.left - view->scroll_x,
4564                                            page_area.y + border.top - view->scroll_y);
4565                         gdk_window_invalidate_region (GTK_WIDGET (view)->window, region, TRUE);
4566                         gdk_region_destroy (region);
4567                 }
4568         }
4569
4570         /* Free the old list, now that we're done with it. */
4571         g_list_foreach (old_list, (GFunc) selection_free, NULL);
4572 }
4573
4574 static void
4575 compute_selections (EvView   *view,
4576                     GdkPoint *start,
4577                     GdkPoint *stop)
4578 {
4579         GList *list;
4580
4581         if (view->selection_mode == EV_VIEW_SELECTION_RECTANGLE)
4582                 list = compute_new_selection_rect (view, start, stop);
4583         else
4584                 list = compute_new_selection_text (view, start, stop);
4585         merge_selection_region (view, list);
4586 }
4587
4588 /* Free's the selection.  It's up to the caller to queue redraws if needed.
4589  */
4590 static void
4591 selection_free (EvViewSelection *selection)
4592 {
4593         if (selection->covered_region)
4594                 gdk_region_destroy (selection->covered_region);
4595         g_free (selection);
4596 }
4597
4598 static void
4599 clear_selection (EvView *view)
4600 {
4601         g_list_foreach (view->selection_info.selections, (GFunc)selection_free, NULL);
4602         view->selection_info.selections = NULL;
4603         view->selection_info.in_selection = FALSE;
4604         if (view->pixbuf_cache)
4605                 ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, NULL);
4606         g_object_notify (G_OBJECT (view), "has-selection");
4607 }
4608
4609
4610 void
4611 ev_view_select_all (EvView *view)
4612 {
4613         int n_pages, i;
4614
4615         /* Disable selection on rotated pages for the 0.4.0 series */
4616         if (view->rotation != 0)
4617                 return;
4618
4619         clear_selection (view);
4620
4621         n_pages = ev_page_cache_get_n_pages (view->page_cache);
4622         for (i = 0; i < n_pages; i++) {
4623                 int width, height;
4624                 EvViewSelection *selection;
4625
4626                 ev_page_cache_get_size (view->page_cache,
4627                                         i,
4628                                         view->rotation,
4629                                         1.0, &width, &height);
4630
4631                 selection = g_new0 (EvViewSelection, 1);
4632                 selection->page = i;
4633                 selection->rect.x1 = selection->rect.y1 = 0;
4634                 selection->rect.x2 = width;
4635                 selection->rect.y2 = height;
4636
4637                 view->selection_info.selections = g_list_append (view->selection_info.selections, selection);
4638         }
4639
4640         ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, view->selection_info.selections);
4641         g_object_notify (G_OBJECT (view), "has-selection");
4642         gtk_widget_queue_draw (GTK_WIDGET (view));
4643 }
4644
4645 gboolean
4646 ev_view_get_has_selection (EvView *view)
4647 {
4648         return view->selection_info.selections != NULL;
4649 }
4650
4651 static char *
4652 get_selected_text (EvView *ev_view)
4653 {
4654         GString *text;
4655         GList *l;
4656         gchar *normalized_text;
4657
4658         text = g_string_new (NULL);
4659
4660         ev_document_doc_mutex_lock ();
4661
4662         for (l = ev_view->selection_info.selections; l != NULL; l = l->next) {
4663                 EvViewSelection *selection = (EvViewSelection *)l->data;
4664                 char *tmp;
4665
4666                 tmp = ev_document_get_text (ev_view->document,
4667                                             selection->page,
4668                                             &selection->rect);
4669                 g_string_append (text, tmp);
4670                 g_free (tmp);
4671         }
4672
4673         ev_document_doc_mutex_unlock ();
4674
4675         normalized_text = g_utf8_normalize (text->str, text->len, G_NORMALIZE_NFKC);
4676         g_string_free (text, TRUE);
4677         return normalized_text;
4678 }
4679
4680 void
4681 ev_view_copy (EvView *ev_view)
4682 {
4683         GtkClipboard *clipboard;
4684         char *text;
4685
4686         if (!ev_document_can_get_text (ev_view->document)) {
4687                 return;
4688         }
4689
4690         text = get_selected_text (ev_view);
4691         clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view),
4692                                               GDK_SELECTION_CLIPBOARD);
4693         gtk_clipboard_set_text (clipboard, text, -1);
4694         g_free (text);
4695 }
4696
4697 static void
4698 ev_view_primary_get_cb (GtkClipboard     *clipboard,
4699                         GtkSelectionData *selection_data,
4700                         guint             info,
4701                         gpointer          data)
4702 {
4703         EvView *ev_view = EV_VIEW (data);
4704         char *text;
4705
4706         if (!ev_document_can_get_text (ev_view->document)) {
4707                 return;
4708         }
4709
4710         text = get_selected_text (ev_view);
4711         gtk_selection_data_set_text (selection_data, text, -1);
4712         g_free (text);
4713 }
4714
4715 static void
4716 ev_view_primary_clear_cb (GtkClipboard *clipboard,
4717                           gpointer      data)
4718 {
4719         EvView *view = EV_VIEW (data);
4720
4721         clear_selection (view);
4722 }
4723
4724 static void
4725 ev_view_update_primary_selection (EvView *ev_view)
4726 {
4727         GtkClipboard *clipboard;
4728
4729         clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view),
4730                                               GDK_SELECTION_PRIMARY);
4731
4732         if (ev_view->selection_info.selections) {
4733                 if (!gtk_clipboard_set_with_owner (clipboard,
4734                                                    clipboard_targets,
4735                                                    G_N_ELEMENTS (clipboard_targets),
4736                                                    ev_view_primary_get_cb,
4737                                                    ev_view_primary_clear_cb,
4738                                                    G_OBJECT (ev_view)))
4739                         ev_view_primary_clear_cb (clipboard, ev_view);
4740         } else {
4741                 if (gtk_clipboard_get_owner (clipboard) == G_OBJECT (ev_view))
4742                         gtk_clipboard_clear (clipboard);
4743         }
4744 }
4745
4746 /*** Cursor operations ***/
4747
4748 static GdkCursor *
4749 ev_view_create_invisible_cursor(void)
4750 {
4751        GdkBitmap *empty;
4752        GdkColor black = { 0, 0, 0, 0 };
4753        static char bits[] = { 0x00 };
4754
4755        empty = gdk_bitmap_create_from_data (NULL, bits, 1, 1);
4756
4757        return gdk_cursor_new_from_pixmap (empty, empty, &black, &black, 0, 0);
4758 }
4759
4760 static void
4761 ev_view_set_cursor (EvView *view, EvViewCursor new_cursor)
4762 {
4763         GdkCursor *cursor = NULL;
4764         GdkDisplay *display;
4765         GtkWidget *widget;
4766
4767         if (view->cursor == new_cursor) {
4768                 return;
4769         }
4770
4771         widget = gtk_widget_get_toplevel (GTK_WIDGET (view));
4772         display = gtk_widget_get_display (widget);
4773         view->cursor = new_cursor;
4774
4775         switch (new_cursor) {
4776                 case EV_VIEW_CURSOR_NORMAL:
4777                         gdk_window_set_cursor (widget->window, NULL);
4778                         break;
4779                 case EV_VIEW_CURSOR_IBEAM:
4780                         cursor = gdk_cursor_new_for_display (display, GDK_XTERM);
4781                         break;
4782                 case EV_VIEW_CURSOR_LINK:
4783                         cursor = gdk_cursor_new_for_display (display, GDK_HAND2);
4784                         break;
4785                 case EV_VIEW_CURSOR_WAIT:
4786                         cursor = gdk_cursor_new_for_display (display, GDK_WATCH);
4787                         break;
4788                 case EV_VIEW_CURSOR_HIDDEN:
4789                         cursor = ev_view_create_invisible_cursor ();
4790                         break;
4791                 case EV_VIEW_CURSOR_DRAG:
4792                         cursor = gdk_cursor_new_for_display (display, GDK_FLEUR);
4793                         break;
4794         }
4795
4796         if (cursor) {
4797                 gdk_window_set_cursor (widget->window, cursor);
4798                 gdk_cursor_unref (cursor);
4799                 gdk_flush();
4800         }
4801 }
4802
4803 void
4804 ev_view_hide_cursor (EvView *view)
4805 {
4806        ev_view_set_cursor (view, EV_VIEW_CURSOR_HIDDEN);
4807 }
4808
4809 void
4810 ev_view_show_cursor (EvView *view)
4811 {
4812        ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
4813 }
4814
4815 static void
4816 ev_view_reset_presentation_state (EvView *view)
4817 {
4818         if (!view->presentation ||
4819             view->presentation_state == EV_PRESENTATION_NORMAL)
4820                 return;
4821
4822         view->presentation_state = EV_PRESENTATION_NORMAL;
4823         gdk_window_set_background (GTK_WIDGET (view)->window,
4824                                    &GTK_WIDGET (view)->style->black);
4825         gtk_widget_queue_draw (GTK_WIDGET (view));
4826 }
4827
4828 gboolean
4829 ev_view_next_page (EvView *view)
4830 {
4831         int page, n_pages;
4832
4833         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
4834
4835         if (!view->page_cache)
4836                 return FALSE;
4837
4838         ev_view_presentation_transition_stop (view);
4839         ev_view_reset_presentation_state (view);
4840
4841         page = ev_page_cache_get_current_page (view->page_cache);
4842         n_pages = ev_page_cache_get_n_pages (view->page_cache);
4843
4844         if (view->dual_page && !view->presentation)
4845                 page = page + 2;
4846         else
4847                 page = page + 1;
4848
4849         if (page < n_pages) {
4850                 ev_page_cache_set_current_page (view->page_cache, page);
4851                 return TRUE;
4852         } else if (view->presentation && page == n_pages) {
4853                 view->presentation_state = EV_PRESENTATION_END;
4854                 gtk_widget_queue_draw (GTK_WIDGET (view));
4855                 return TRUE;
4856         } else if (view->dual_page && page == n_pages) {
4857                 ev_page_cache_set_current_page (view->page_cache, page - 1);
4858                 return TRUE;
4859         } else {
4860                 return FALSE;
4861         }
4862 }
4863
4864 gboolean
4865 ev_view_previous_page (EvView *view)
4866 {
4867         int page;
4868
4869         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
4870
4871         if (!view->page_cache)
4872                 return FALSE;
4873
4874         if (view->presentation &&
4875             view->presentation_state == EV_PRESENTATION_END) {
4876                 ev_view_reset_presentation_state (view);
4877                 return TRUE;
4878         }
4879
4880         ev_view_reset_presentation_state (view);
4881
4882         page = ev_page_cache_get_current_page (view->page_cache);
4883
4884         if (view->dual_page && !view->presentation)
4885                 page = page - 2;
4886         else
4887                 page = page - 1;
4888
4889         if (page >= 0) {
4890                 ev_page_cache_set_current_page (view->page_cache, page);
4891                 return TRUE;
4892         } else if (ev_view_get_dual_page (view) && page == -1) {
4893                 ev_page_cache_set_current_page (view->page_cache, 0);
4894                 return TRUE;
4895         } else {
4896                 return FALSE;
4897         }
4898 }
4899
4900 /*** Enum description for usage in signal ***/
4901
4902 GType
4903 ev_sizing_mode_get_type (void)
4904 {
4905   static GType etype = 0;
4906   if (etype == 0) {
4907     static const GEnumValue values[] = {
4908       { EV_SIZING_FIT_WIDTH, "EV_SIZING_FIT_WIDTH", "fit-width" },
4909       { EV_SIZING_BEST_FIT, "EV_SIZING_BEST_FIT", "best-fit" },
4910       { EV_SIZING_FREE, "EV_SIZING_FREE", "free" },
4911       { 0, NULL, NULL }
4912     };
4913     etype = g_enum_register_static ("EvSizingMode", values);
4914   }
4915   return etype;
4916 }
4917
4918 GType
4919 ev_scroll_type_get_type (void)
4920 {
4921   static GType etype = 0;
4922   if (etype == 0) {
4923     static const GEnumValue values[] = {
4924       { EV_SCROLL_PAGE_FORWARD, "EV_SCROLL_PAGE_FORWARD", "scroll-page-forward" },
4925       { EV_SCROLL_PAGE_BACKWARD, "EV_SCROLL_PAGE_BACKWARD", "scroll-page-backward" },
4926       { EV_SCROLL_STEP_FORWARD, "EV_SCROLL_STEP_FORWARD", "scroll-step-forward" },
4927       { EV_SCROLL_STEP_FORWARD, "EV_SCROLL_STEP_FORWARD", "scroll-step-forward" },
4928       { EV_SCROLL_STEP_UP, "EV_SCROLL_STEP_UP", "scroll-step-up" },
4929       { EV_SCROLL_STEP_DOWN, "EV_SCROLL_STEP_DOWN", "scroll-step-down" },
4930       { 0, NULL, NULL }
4931     };
4932     etype = g_enum_register_static ("EvScrollType", values);
4933   }
4934   return etype;
4935 }