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
1352         type = ev_link_action_get_action_type (action);
1353
1354         switch (type) {
1355                 case EV_LINK_ACTION_TYPE_GOTO_DEST: {
1356                         EvLinkDest *dest;
1357
1358                         g_signal_emit (view, signals[SIGNAL_HANDLE_LINK], 0, link);
1359
1360                         dest = ev_link_action_get_dest (action);
1361                         ev_view_goto_dest (view, dest);
1362                 }
1363                         break;
1364                 case EV_LINK_ACTION_TYPE_GOTO_REMOTE:
1365                 case EV_LINK_ACTION_TYPE_EXTERNAL_URI:
1366                 case EV_LINK_ACTION_TYPE_LAUNCH:
1367                 case EV_LINK_ACTION_TYPE_NAMED:
1368                         g_signal_emit (view, signals[SIGNAL_EXTERNAL_LINK], 0, action);
1369                         break;
1370         }
1371 }
1372
1373 static gchar *
1374 page_label_from_dest (EvView *view, EvLinkDest *dest)
1375 {
1376         EvLinkDestType type;
1377         gchar *msg = NULL;
1378
1379         type = ev_link_dest_get_dest_type (dest);
1380
1381         switch (type) {
1382                 case EV_LINK_DEST_TYPE_NAMED: {
1383                         EvLinkDest  *dest2;
1384                         const gchar *named_dest;
1385
1386                         named_dest = ev_link_dest_get_named_dest (dest);
1387                         dest2 = ev_document_links_find_link_dest (EV_DOCUMENT_LINKS (view->document),
1388                                                                   named_dest);
1389                         if (dest2) {
1390                                 msg = ev_page_cache_get_page_label (view->page_cache,
1391                                                                     ev_link_dest_get_page (dest2));
1392                                 g_object_unref (dest2);
1393                         }
1394                 }
1395
1396                         break;
1397                 default:
1398                         msg = ev_page_cache_get_page_label (view->page_cache,
1399                                                             ev_link_dest_get_page (dest));
1400         }
1401
1402         return msg;
1403 }
1404
1405 static char *
1406 tip_from_action_named (EvLinkAction *action)
1407 {
1408         const gchar *name = ev_link_action_get_name (action);
1409
1410         if (g_ascii_strcasecmp (name, "FirstPage") == 0) {
1411                 return g_strdup (_("Go to first page"));
1412         } else if (g_ascii_strcasecmp (name, "PrevPage") == 0) {
1413                 return g_strdup (_("Go to previous page"));
1414         } else if (g_ascii_strcasecmp (name, "NextPage") == 0) {
1415                 return g_strdup (_("Go to next page"));
1416         } else if (g_ascii_strcasecmp (name, "LastPage") == 0) {
1417                 return g_strdup (_("Go to last page"));
1418         } else if (g_ascii_strcasecmp (name, "GoToPage") == 0) {
1419                 return g_strdup (_("Go to page"));
1420         } else if (g_ascii_strcasecmp (name, "Find") == 0) {
1421                 return g_strdup (_("Find"));
1422         }
1423
1424         return NULL;
1425 }
1426
1427 static char *
1428 tip_from_link (EvView *view, EvLink *link)
1429 {
1430         EvLinkAction *action;
1431         EvLinkActionType type;
1432         char *msg = NULL;
1433         char *page_label;
1434         const char *title;
1435
1436         action = ev_link_get_action (link);
1437         title = ev_link_get_title (link);
1438
1439         if (!action)
1440                 return title ? g_strdup (title) : NULL;
1441
1442         type = ev_link_action_get_action_type (action);
1443
1444         switch (type) {
1445                 case EV_LINK_ACTION_TYPE_GOTO_DEST:
1446                         page_label = page_label_from_dest (view,
1447                                                            ev_link_action_get_dest (action));
1448                         msg = g_strdup_printf (_("Go to page %s"), page_label);
1449                         g_free (page_label);
1450                         break;
1451                 case EV_LINK_ACTION_TYPE_GOTO_REMOTE:
1452                         if (title) {
1453                                 msg = g_strdup_printf (_("Go to %s on file “%s”"), title,
1454                                                        ev_link_action_get_filename (action));
1455                         } else {
1456                                 msg = g_strdup_printf (_("Go to file “%s”"),
1457                                                        ev_link_action_get_filename (action));
1458                         }
1459
1460                         break;
1461                 case EV_LINK_ACTION_TYPE_EXTERNAL_URI:
1462                         msg = g_strdup (ev_link_action_get_uri (action));
1463                         break;
1464                 case EV_LINK_ACTION_TYPE_LAUNCH:
1465                         msg = g_strdup_printf (_("Launch %s"),
1466                                                ev_link_action_get_filename (action));
1467                         break;
1468                 case EV_LINK_ACTION_TYPE_NAMED:
1469                         msg = tip_from_action_named (action);
1470                         break;
1471                 default:
1472                         if (title)
1473                                 msg = g_strdup (title);
1474                         break;
1475         }
1476
1477         return msg;
1478 }
1479
1480 static void
1481 handle_link_over_xy (EvView *view, gint x, gint y)
1482 {
1483         EvLink *link;
1484
1485         link = ev_view_get_link_at_location (view, x, y);
1486
1487         if (view->link_tooltip == NULL) {
1488                 view->link_tooltip = ev_tooltip_new (GTK_WIDGET (view));
1489         }
1490
1491         if (view->hovered_link != link) {
1492                 view->hovered_link = link;
1493                 ev_tooltip_deactivate (EV_TOOLTIP (view->link_tooltip));
1494         }
1495
1496         if (link) {
1497                 char *msg = tip_from_link (view, link);
1498
1499                 if (msg && g_utf8_validate (msg, -1, NULL)) {
1500                         EvTooltip *tooltip = EV_TOOLTIP (view->link_tooltip);
1501
1502                         ev_tooltip_set_position (tooltip, x, y);
1503                         ev_tooltip_set_text (tooltip, msg);
1504                         ev_tooltip_activate (tooltip);
1505                 }
1506                 g_free (msg);
1507
1508                 ev_view_set_cursor (view, EV_VIEW_CURSOR_LINK);
1509         } else if (location_in_text (view, x + view->scroll_x, y + view->scroll_y)) {
1510                 ev_view_set_cursor (view, EV_VIEW_CURSOR_IBEAM);
1511         } else {
1512                 ev_view_set_status (view, NULL);
1513                 if (view->cursor == EV_VIEW_CURSOR_LINK ||
1514                     view->cursor == EV_VIEW_CURSOR_IBEAM)
1515                         ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
1516         }
1517         return;
1518 }
1519
1520 /*** Images ***/
1521 static EvImage *
1522 ev_view_get_image_at_location (EvView  *view,
1523                                gdouble  x,
1524                                gdouble  y)
1525 {
1526         gint page = -1;
1527         gint x_offset = 0, y_offset = 0;
1528         gint x_new = 0, y_new = 0;
1529         GList *image_mapping;
1530
1531         if (!EV_IS_DOCUMENT_IMAGES (view->document))
1532                 return NULL;
1533
1534         x += view->scroll_x;
1535         y += view->scroll_y;
1536
1537         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1538
1539         if (page == -1)
1540                 return NULL;
1541
1542         if (get_doc_point_from_offset (view, page, x_offset,
1543                                        y_offset, &x_new, &y_new) == FALSE)
1544                 return NULL;
1545
1546         image_mapping = ev_pixbuf_cache_get_image_mapping (view->pixbuf_cache, page);
1547
1548         if (image_mapping)
1549                 return ev_image_mapping_find (image_mapping, x_new, y_new);
1550         else
1551                 return NULL;
1552 }
1553
1554 /*** GtkWidget implementation ***/
1555
1556 static void
1557 ev_view_size_request_continuous_dual_page (EvView         *view,
1558                                            GtkRequisition *requisition)
1559 {
1560         int max_width;
1561         gint n_pages;
1562         GtkBorder border;
1563
1564         ev_page_cache_get_max_width (view->page_cache, view->rotation,
1565                                      view->scale, &max_width);
1566         compute_border (view, max_width, max_width, &border);
1567
1568         n_pages = ev_page_cache_get_n_pages (view->page_cache) + 1;
1569
1570         requisition->width = (max_width + border.left + border.right) * 2 + (view->spacing * 3);
1571         get_page_y_offset (view, n_pages, view->scale, &requisition->height);
1572
1573         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
1574                 requisition->width = 1;
1575         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
1576                 requisition->width = 1;
1577                 /* FIXME: This could actually be set on one page docs or docs
1578                  * with a strange aspect ratio. */
1579                 /* requisition->height = 1;*/
1580         }
1581 }
1582
1583 static void
1584 ev_view_size_request_continuous (EvView         *view,
1585                                  GtkRequisition *requisition)
1586 {
1587         int max_width;
1588         int n_pages;
1589         GtkBorder border;
1590
1591
1592         ev_page_cache_get_max_width (view->page_cache, view->rotation,
1593                                      view->scale, &max_width);
1594         n_pages = ev_page_cache_get_n_pages (view->page_cache);
1595         compute_border (view, max_width, max_width, &border);
1596
1597         requisition->width = max_width + (view->spacing * 2) + border.left + border.right;
1598         get_page_y_offset (view, n_pages, view->scale, &requisition->height);
1599
1600         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
1601                 requisition->width = 1;
1602         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
1603                 requisition->width = 1;
1604                 /* FIXME: This could actually be set on one page docs or docs
1605                  * with a strange aspect ratio. */
1606                 /* requisition->height = 1;*/
1607         }
1608 }
1609
1610 static void
1611 ev_view_size_request_dual_page (EvView         *view,
1612                                 GtkRequisition *requisition)
1613 {
1614         GtkBorder border;
1615         gint width, height;
1616
1617         /* Find the largest of the two. */
1618         ev_page_cache_get_size (view->page_cache,
1619                                 view->current_page,
1620                                 view->rotation,
1621                                 view->scale,
1622                                 &width, &height);
1623         if (view->current_page + 1 < ev_page_cache_get_n_pages (view->page_cache)) {
1624                 gint width_2, height_2;
1625                 ev_page_cache_get_size (view->page_cache,
1626                                         view->current_page + 1,
1627                                         view->rotation,
1628                                         view->scale,
1629                                         &width_2, &height_2);
1630                 if (width_2 > width) {
1631                         width = width_2;
1632                         height = height_2;
1633                 }
1634         }
1635         compute_border (view, width, height, &border);
1636
1637         requisition->width = ((width + border.left + border.right) * 2) +
1638                 (view->spacing * 3);
1639         requisition->height = (height + border.top + border.bottom) +
1640                 (view->spacing * 2);
1641
1642         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
1643                 requisition->width = 1;
1644         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
1645                 requisition->width = 1;
1646                 requisition->height = 1;
1647         }
1648 }
1649
1650 static void
1651 ev_view_size_request_single_page (EvView         *view,
1652                                   GtkRequisition *requisition)
1653 {
1654         GtkBorder border;
1655         gint width, height;
1656
1657         ev_page_cache_get_size (view->page_cache,
1658                                 view->current_page,
1659                                 view->rotation,
1660                                 view->scale,
1661                                 &width, &height);
1662         compute_border (view, width, height, &border);
1663
1664         requisition->width = width + border.left + border.right + (2 * view->spacing);
1665         requisition->height = height + border.top + border.bottom + (2 * view->spacing);
1666
1667         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
1668                 requisition->width = 1;
1669                 requisition->height = height + border.top + border.bottom + (2 * view->spacing);
1670         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
1671                 requisition->width = 1;
1672                 requisition->height = 1;
1673         }
1674 }
1675
1676 static void
1677 ev_view_size_request (GtkWidget      *widget,
1678                       GtkRequisition *requisition)
1679 {
1680         EvView *view = EV_VIEW (widget);
1681
1682         if (view->document == NULL) {
1683                 requisition->width = 1;
1684                 requisition->height = 1;
1685                 return;
1686         }
1687
1688         if (view->presentation) {
1689                 requisition->width = 1;
1690                 requisition->height = 1;
1691                 return;
1692         }
1693
1694         if (view->continuous && view->dual_page)
1695                 ev_view_size_request_continuous_dual_page (view, requisition);
1696         else if (view->continuous)
1697                 ev_view_size_request_continuous (view, requisition);
1698         else if (view->dual_page)
1699                 ev_view_size_request_dual_page (view, requisition);
1700         else
1701                 ev_view_size_request_single_page (view, requisition);
1702 }
1703
1704 static void
1705 ev_view_size_allocate (GtkWidget      *widget,
1706                        GtkAllocation  *allocation)
1707 {
1708         EvView *view = EV_VIEW (widget);
1709
1710         GTK_WIDGET_CLASS (ev_view_parent_class)->size_allocate (widget, allocation);
1711
1712         if (view->sizing_mode == EV_SIZING_FIT_WIDTH ||
1713             view->sizing_mode == EV_SIZING_BEST_FIT) {
1714
1715                 g_signal_emit (view, signals[SIGNAL_ZOOM_INVALID], 0);
1716
1717                 ev_view_size_request (widget, &widget->requisition);
1718         }
1719
1720         view_set_adjustment_values (view, GTK_ORIENTATION_HORIZONTAL);
1721         view_set_adjustment_values (view, GTK_ORIENTATION_VERTICAL);
1722
1723         if (view->document)
1724                 view_update_range_and_current_page (view);
1725
1726         view->pending_scroll = SCROLL_TO_KEEP_POSITION;
1727         view->pending_resize = FALSE;
1728 }
1729
1730 static void
1731 ev_view_realize (GtkWidget *widget)
1732 {
1733         EvView *view = EV_VIEW (widget);
1734         GdkWindowAttr attributes;
1735
1736         GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
1737
1738         attributes.window_type = GDK_WINDOW_CHILD;
1739         attributes.wclass = GDK_INPUT_OUTPUT;
1740         attributes.visual = gtk_widget_get_visual (widget);
1741         attributes.colormap = gtk_widget_get_colormap (widget);
1742
1743         attributes.x = widget->allocation.x;
1744         attributes.y = widget->allocation.y;
1745         attributes.width = widget->allocation.width;
1746         attributes.height = widget->allocation.height;
1747         attributes.event_mask = GDK_EXPOSURE_MASK |
1748                                 GDK_BUTTON_PRESS_MASK |
1749                                 GDK_BUTTON_RELEASE_MASK |
1750                                 GDK_SCROLL_MASK |
1751                                 GDK_KEY_PRESS_MASK |
1752                                 GDK_POINTER_MOTION_MASK |
1753                                 GDK_POINTER_MOTION_HINT_MASK |
1754                                 GDK_ENTER_NOTIFY_MASK |
1755                                 GDK_LEAVE_NOTIFY_MASK;
1756
1757         widget->window = gdk_window_new (gtk_widget_get_parent_window (widget),
1758                                          &attributes,
1759                                          GDK_WA_X | GDK_WA_Y |
1760                                          GDK_WA_COLORMAP |
1761                                          GDK_WA_VISUAL);
1762         gdk_window_set_user_data (widget->window, widget);
1763         widget->style = gtk_style_attach (widget->style, widget->window);
1764
1765         if (view->presentation)
1766                 gdk_window_set_background (widget->window, &widget->style->black);
1767         else
1768                 gdk_window_set_background (widget->window, &widget->style->mid [GTK_STATE_NORMAL]);
1769 }
1770
1771 static gboolean
1772 ev_view_scroll_event (GtkWidget *widget, GdkEventScroll *event)
1773 {
1774         EvView *view = EV_VIEW (widget);
1775         guint state;
1776
1777         state = event->state & gtk_accelerator_get_default_mod_mask ();
1778
1779         if (state == GDK_CONTROL_MASK && view->presentation == FALSE) {
1780                 ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1781
1782                 if (event->direction == GDK_SCROLL_UP ||
1783                     event->direction == GDK_SCROLL_LEFT) {
1784                         if (ev_view_can_zoom_in (view)) {
1785                                 ev_view_zoom_in (view);
1786                         }
1787                 } else {
1788                         if (ev_view_can_zoom_out (view)) {
1789                                 ev_view_zoom_out (view);
1790                         }
1791                 }
1792
1793                 return TRUE;
1794         }
1795
1796         view->jump_to_find_result = FALSE;
1797         /* Shift+Wheel scrolls the in the perpendicular direction */
1798         if (state & GDK_SHIFT_MASK) {
1799                 if (event->direction == GDK_SCROLL_UP)
1800                         event->direction = GDK_SCROLL_LEFT;
1801                 if (event->direction == GDK_SCROLL_LEFT)
1802                         event->direction = GDK_SCROLL_UP;
1803                 if (event->direction == GDK_SCROLL_DOWN)
1804                         event->direction = GDK_SCROLL_RIGHT;
1805                 if (event->direction == GDK_SCROLL_RIGHT)
1806                         event->direction = GDK_SCROLL_DOWN;
1807
1808                 event->state &= ~GDK_SHIFT_MASK;
1809                 state &= ~GDK_SHIFT_MASK;
1810         }
1811
1812         if (state == 0 && view->presentation) {
1813                 switch (event->direction) {
1814                         case GDK_SCROLL_DOWN:
1815                         case GDK_SCROLL_RIGHT:
1816                                 ev_view_next_page (view);
1817                                 break;
1818                         case GDK_SCROLL_UP:
1819                         case GDK_SCROLL_LEFT:
1820                                 ev_view_previous_page (view);
1821                                 break;
1822                 }
1823
1824                 return TRUE;
1825         }
1826
1827         return FALSE;
1828 }
1829
1830 static EvViewSelection *
1831 find_selection_for_page (EvView *view,
1832                          gint    page)
1833 {
1834         GList *list;
1835
1836         for (list = view->selection_info.selections; list != NULL; list = list->next) {
1837                 EvViewSelection *selection;
1838
1839                 selection = (EvViewSelection *) list->data;
1840
1841                 if (selection->page == page)
1842                         return selection;
1843         }
1844
1845         return NULL;
1846 }
1847
1848 static void
1849 draw_end_presentation_page (EvView       *view,
1850                             GdkRectangle *page_area)
1851 {
1852         PangoLayout *layout;
1853         PangoFontDescription *font_desc;
1854         gchar *markup;
1855         const gchar *text = _("End of presentation. Press Escape to exit.");
1856
1857         if (view->presentation_state != EV_PRESENTATION_END)
1858                 return;
1859
1860         layout = gtk_widget_create_pango_layout (GTK_WIDGET (view), NULL);
1861         markup = g_strdup_printf ("<span foreground=\"white\">%s</span>", text);
1862         pango_layout_set_markup (layout, markup, -1);
1863         g_free (markup);
1864
1865         font_desc = pango_font_description_new ();
1866         pango_font_description_set_size (font_desc, 16 * PANGO_SCALE);
1867         pango_layout_set_font_description (layout, font_desc);
1868
1869         gtk_paint_layout (GTK_WIDGET (view)->style,
1870                           GTK_WIDGET (view)->window,
1871                           GTK_WIDGET_STATE (view),
1872                           FALSE,
1873                           page_area,
1874                           GTK_WIDGET (view),
1875                           NULL,
1876                           page_area->x + 15,
1877                           page_area->y + 15,
1878                           layout);
1879
1880         pango_font_description_free (font_desc);
1881         g_object_unref (layout);
1882 }
1883
1884 static gboolean
1885 ev_view_expose_event (GtkWidget      *widget,
1886                       GdkEventExpose *event)
1887 {
1888         EvView *view = EV_VIEW (widget);
1889         int i;
1890
1891         if (view->presentation) {
1892                 switch (view->presentation_state) {
1893                         case EV_PRESENTATION_END: {
1894                                 GdkRectangle area = {0};
1895
1896                                 area.width = widget->allocation.width;
1897                                 area.height = widget->allocation.height;
1898
1899                                 draw_end_presentation_page (view, &area);
1900                         }
1901                                 return FALSE;
1902                         case EV_PRESENTATION_BLACK:
1903                         case EV_PRESENTATION_WHITE:
1904                                 return FALSE;
1905                         case EV_PRESENTATION_NORMAL:
1906                         default:
1907                                 break;
1908                 }
1909         } else if (view->loading) {
1910                 GdkRectangle area = {0};
1911
1912                 area.width = widget->allocation.width;
1913                 area.height = widget->allocation.height;
1914
1915                 draw_loading_text (view,
1916                                    &area,
1917                                    &(event->area));
1918         }
1919
1920         if (view->document == NULL)
1921                 return FALSE;
1922
1923         for (i = view->start_page; i <= view->end_page; i++) {
1924                 GdkRectangle page_area;
1925                 GtkBorder border;
1926                 gboolean page_ready = TRUE;
1927
1928                 if (!get_page_extents (view, i, &page_area, &border))
1929                         continue;
1930
1931                 page_area.x -= view->scroll_x;
1932                 page_area.y -= view->scroll_y;
1933
1934                 draw_one_page (view, i, &page_area, &border, &(event->area), &page_ready);
1935
1936                 if (page_ready && EV_IS_DOCUMENT_FIND (view->document))
1937                         highlight_find_results (view, i);
1938         }
1939
1940         return FALSE;
1941 }
1942
1943 static gboolean
1944 ev_view_do_popup_menu (EvView *view,
1945                        gdouble x,
1946                        gdouble y)
1947 {
1948         EvLink  *link;
1949         EvImage *image;
1950
1951         image = ev_view_get_image_at_location (view, x, y);
1952         if (image) {
1953                 g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, image);
1954                 return TRUE;
1955         }
1956
1957         link = ev_view_get_link_at_location (view, x, y);
1958         if (link) {
1959                 g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, link);
1960                 return TRUE;
1961         }
1962
1963         g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, NULL);
1964
1965         return TRUE;
1966 }
1967
1968 static gboolean
1969 ev_view_popup_menu (GtkWidget *widget)
1970 {
1971         gint x, y;
1972
1973         gtk_widget_get_pointer (widget, &x, &y);
1974         return ev_view_do_popup_menu (EV_VIEW (widget), x, y);
1975 }
1976
1977 static gboolean
1978 ev_view_button_press_event (GtkWidget      *widget,
1979                             GdkEventButton *event)
1980 {
1981         EvView *view = EV_VIEW (widget);
1982
1983         if (!GTK_WIDGET_HAS_FOCUS (widget)) {
1984                 gtk_widget_grab_focus (widget);
1985         }
1986
1987         view->pressed_button = event->button;
1988         view->selection_info.in_drag = FALSE;
1989
1990         switch (event->button) {
1991                 case 1: {
1992                         EvImage *image;
1993
1994                         if (view->selection_info.selections) {
1995                                 if (location_in_selected_text (view,
1996                                                                event->x + view->scroll_x,
1997                                                                event->y + view->scroll_y)) {
1998                                         view->selection_info.in_drag = TRUE;
1999                                 } else {
2000                                         clear_selection (view);
2001                                 }
2002
2003                                 gtk_widget_queue_draw (widget);
2004                         } else if ((image = ev_view_get_image_at_location (view, event->x, event->y))) {
2005                                 if (view->image_dnd_info.image)
2006                                         g_object_unref (view->image_dnd_info.image);
2007                                 view->image_dnd_info.image = g_object_ref (image);
2008                                 view->image_dnd_info.in_drag = TRUE;
2009
2010                                 view->image_dnd_info.start.x = event->x + view->scroll_x;
2011                                 view->image_dnd_info.start.y = event->y + view->scroll_y;
2012                         }
2013
2014                         view->selection_info.start.x = event->x + view->scroll_x;
2015                         view->selection_info.start.y = event->y + view->scroll_y;
2016                 }
2017                         return TRUE;
2018                 case 2:
2019                         /* use root coordinates as reference point because
2020                          * scrolling changes window relative coordinates */
2021                         view->drag_info.start.x = event->x_root;
2022                         view->drag_info.start.y = event->y_root;
2023                         view->drag_info.hadj = gtk_adjustment_get_value (view->hadjustment);
2024                         view->drag_info.vadj = gtk_adjustment_get_value (view->vadjustment);
2025
2026                         ev_view_set_cursor (view, EV_VIEW_CURSOR_DRAG);
2027
2028                         return TRUE;
2029                 case 3:
2030                         return ev_view_do_popup_menu (view, event->x, event->y);
2031         }
2032
2033         return FALSE;
2034 }
2035
2036 /*** Drag and Drop ***/
2037 static void
2038 ev_view_drag_data_get (GtkWidget        *widget,
2039                        GdkDragContext   *context,
2040                        GtkSelectionData *selection_data,
2041                        guint             info,
2042                        guint             time)
2043 {
2044         EvView *view = EV_VIEW (widget);
2045
2046         switch (info) {
2047                 case TARGET_DND_TEXT:
2048                         if (view->selection_info.selections &&
2049                             ev_document_can_get_text (view->document)) {
2050                                 gchar *text;
2051
2052                                 text = get_selected_text (view);
2053
2054                                 gtk_selection_data_set_text (selection_data,
2055                                                              text,
2056                                                              strlen (text));
2057
2058                                 g_free (text);
2059                         }
2060                         break;
2061                 case TARGET_DND_IMAGE:
2062                         if (view->image_dnd_info.image) {
2063                                 GdkPixbuf *pixbuf;
2064
2065                                 pixbuf = ev_image_get_pixbuf (view->image_dnd_info.image);
2066                                 gtk_selection_data_set_pixbuf (selection_data, pixbuf);
2067                         }
2068                         break;
2069                 case TARGET_DND_URI:
2070                         if (view->image_dnd_info.image) {
2071                                 const gchar *tmp_uri;
2072                                 gchar      **uris;
2073
2074                                 tmp_uri = ev_image_save_tmp (view->image_dnd_info.image);
2075
2076                                 uris = g_new0 (gchar *, 2);
2077                                 uris[0] = (gchar *)tmp_uri;
2078
2079                                 gtk_selection_data_set_uris (selection_data, uris);
2080
2081                                 /* g_free instead of g_strfreev since tmp_uri is const */
2082                                 g_free (uris);
2083                         }
2084         }
2085 }
2086
2087 static gboolean
2088 ev_view_drag_motion (GtkWidget      *widget,
2089                      GdkDragContext *context,
2090                      gint            x,
2091                      gint            y,
2092                      guint           time)
2093 {
2094         if (gtk_drag_get_source_widget (context) == widget)
2095                 gdk_drag_status (context, 0, time);
2096         else
2097                 gdk_drag_status (context, context->suggested_action, time);
2098
2099         return TRUE;
2100 }
2101
2102 static void
2103 ev_view_drag_data_received (GtkWidget          *widget,
2104                             GdkDragContext     *context,
2105                             gint                x,
2106                             gint                y,
2107                             GtkSelectionData   *selection_data,
2108                             guint               info,
2109                             guint               time)
2110 {
2111         gchar  **uris;
2112         gint     i = 0;
2113         GSList  *uri_list = NULL;
2114
2115         uris = gtk_selection_data_get_uris (selection_data);
2116         if (!uris) {
2117                 gtk_drag_finish (context, FALSE, FALSE, time);
2118                 return;
2119         }
2120
2121         for (i = 0; uris[i]; i++) {
2122                 uri_list = g_slist_prepend (uri_list, (gpointer) uris[i]);
2123         }
2124
2125         ev_application_open_uri_list (EV_APP, uri_list,
2126                                       gtk_widget_get_screen (widget),
2127                                       0);
2128         gtk_drag_finish (context, TRUE, FALSE, time);
2129
2130         g_strfreev (uris);
2131         g_slist_free (uri_list);
2132 }
2133
2134
2135 static gboolean
2136 selection_update_idle_cb (EvView *view)
2137 {
2138         compute_selections (view, &view->selection_info.start, &view->motion);
2139         view->selection_update_id = 0;
2140         return FALSE;
2141 }
2142
2143 static gboolean
2144 selection_scroll_timeout_cb (EvView *view)
2145 {
2146         gint x, y, shift = 0;
2147         GtkWidget *widget = GTK_WIDGET (view);
2148
2149         gtk_widget_get_pointer (widget, &x, &y);
2150
2151         if (y > widget->allocation.height) {
2152                 shift = (y - widget->allocation.height) / 2;
2153         } else if (y < 0) {
2154                 shift = y / 2;
2155         }
2156
2157         if (shift)
2158                 gtk_adjustment_set_value (view->vadjustment,
2159                                           CLAMP (view->vadjustment->value + shift,
2160                                           view->vadjustment->lower,
2161                                           view->vadjustment->upper -
2162                                           view->vadjustment->page_size));
2163
2164         if (x > widget->allocation.width) {
2165                 shift = (x - widget->allocation.width) / 2;
2166         } else if (x < 0) {
2167                 shift = x / 2;
2168         }
2169
2170         if (shift)
2171                 gtk_adjustment_set_value (view->hadjustment,
2172                                           CLAMP (view->hadjustment->value + shift,
2173                                           view->hadjustment->lower,
2174                                           view->hadjustment->upper -
2175                                           view->hadjustment->page_size));
2176
2177         return TRUE;
2178 }
2179
2180 static gboolean
2181 ev_view_motion_notify_event (GtkWidget      *widget,
2182                              GdkEventMotion *event)
2183 {
2184         EvView *view = EV_VIEW (widget);
2185         gint x, y;
2186
2187         if (!view->document)
2188                 return FALSE;
2189
2190         if (event->is_hint || event->window != widget->window) {
2191             gtk_widget_get_pointer (widget, &x, &y);
2192         } else {
2193             x = event->x;
2194             y = event->y;
2195         }
2196
2197         if (view->selection_info.in_drag) {
2198                 if (gtk_drag_check_threshold (widget,
2199                                               view->selection_info.start.x,
2200                                               view->selection_info.start.y,
2201                                               x, y)) {
2202                         GtkTargetList *target_list = gtk_target_list_new (NULL, 0);
2203
2204                         gtk_target_list_add_text_targets (target_list, TARGET_DND_TEXT);
2205
2206                         gtk_drag_begin (widget, target_list,
2207                                         GDK_ACTION_COPY,
2208                                         1, (GdkEvent *)event);
2209
2210                         view->selection_info.in_drag = FALSE;
2211
2212                         gtk_target_list_unref (target_list);
2213
2214                         return TRUE;
2215                 }
2216         } else if (view->image_dnd_info.in_drag) {
2217                 if (gtk_drag_check_threshold (widget,
2218                                               view->selection_info.start.x,
2219                                               view->selection_info.start.y,
2220                                               x, y)) {
2221                         GtkTargetList *target_list = gtk_target_list_new (NULL, 0);
2222
2223                         gtk_target_list_add_uri_targets (target_list, TARGET_DND_URI);
2224                         gtk_target_list_add_image_targets (target_list, TARGET_DND_IMAGE, TRUE);
2225
2226                         gtk_drag_begin (widget, target_list,
2227                                         GDK_ACTION_COPY,
2228                                         1, (GdkEvent *)event);
2229
2230                         view->image_dnd_info.in_drag = FALSE;
2231
2232                         gtk_target_list_unref (target_list);
2233
2234                         return TRUE;
2235                 }
2236         }
2237
2238         /* For the Evince 0.4.x release, we limit selection to un-rotated
2239          * documents only.
2240          */
2241         if (view->pressed_button == 1 && view->rotation == 0) {
2242
2243                 /* Schedule timeout to scroll during selection and additionally
2244                  * scroll once to allow arbitrary speed. */
2245                 if (!view->selection_scroll_id)
2246                     view->selection_scroll_id = g_timeout_add (SCROLL_TIME, (GSourceFunc)selection_scroll_timeout_cb, view);
2247                 else
2248                     selection_scroll_timeout_cb (view);
2249
2250                 view->selection_info.in_selection = TRUE;
2251                 view->motion.x = x + view->scroll_x;
2252                 view->motion.y = y + view->scroll_y;
2253
2254                 /* Queue an idle to handle the motion.  We do this because
2255                  * handling any selection events in the motion could be slower
2256                  * than new motion events reach us.  We always put it in the
2257                  * idle to make sure we catch up and don't visibly lag the
2258                  * mouse. */
2259                 if (!view->selection_update_id)
2260                         view->selection_update_id = g_idle_add ((GSourceFunc)selection_update_idle_cb, view);
2261
2262                 return TRUE;
2263         } else if (view->pressed_button == 2) {
2264                 if (!view->drag_info.in_drag) {
2265                         gboolean start;
2266
2267                         start = gtk_drag_check_threshold (widget,
2268                                                           view->drag_info.start.x,
2269                                                           view->drag_info.start.y,
2270                                                           event->x_root,
2271                                                           event->y_root);
2272                         view->drag_info.in_drag = start;
2273                 }
2274
2275                 if (view->drag_info.in_drag) {
2276                         int dx, dy;
2277                         gdouble dhadj_value, dvadj_value;
2278
2279                         dx = event->x_root - view->drag_info.start.x;
2280                         dy = event->y_root - view->drag_info.start.y;
2281
2282                         dhadj_value = view->hadjustment->page_size *
2283                                       (gdouble)dx / widget->allocation.width;
2284                         dvadj_value = view->vadjustment->page_size *
2285                                       (gdouble)dy / widget->allocation.height;
2286
2287                         /* clamp scrolling to visible area */
2288                         gtk_adjustment_set_value (view->hadjustment,
2289                                                   MIN(view->drag_info.hadj - dhadj_value,
2290                                                       view->hadjustment->upper -
2291                                                       view->hadjustment->page_size));
2292                         gtk_adjustment_set_value (view->vadjustment,
2293                                                   MIN(view->drag_info.vadj - dvadj_value,
2294                                                       view->vadjustment->upper -
2295                                                       view->vadjustment->page_size));
2296
2297                         return TRUE;
2298                 }
2299         } else if (view->pressed_button <= 0) {
2300                 handle_link_over_xy (view, x, y);
2301                 return TRUE;
2302         }
2303
2304         return FALSE;
2305 }
2306
2307 static gboolean
2308 ev_view_button_release_event (GtkWidget      *widget,
2309                               GdkEventButton *event)
2310 {
2311         EvView *view = EV_VIEW (widget);
2312         EvLink *link;
2313
2314         if (view->pressed_button == 2) {
2315                 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
2316         }
2317
2318         if (view->document && view->pressed_button != 3) {
2319                 link = ev_view_get_link_at_location (view, event->x, event->y);
2320         } else {
2321                 link = NULL;
2322         }
2323
2324         view->pressed_button = -1;
2325         view->drag_info.in_drag = FALSE;
2326         view->image_dnd_info.in_drag = FALSE;
2327
2328         if (view->selection_scroll_id) {
2329             g_source_remove (view->selection_scroll_id);
2330             view->selection_scroll_id = 0;
2331         }
2332         if (view->selection_update_id) {
2333             g_source_remove (view->selection_update_id);
2334             view->selection_update_id = 0;
2335         }
2336
2337         if (view->selection_info.selections) {
2338                 ev_view_update_primary_selection (view);
2339
2340                 if (view->selection_info.in_drag) {
2341                         clear_selection (view);
2342                         gtk_widget_queue_draw (widget);
2343                 }
2344
2345                 view->selection_info.in_drag = FALSE;
2346         } else if (link) {
2347                 if (event->button == 2) {
2348                         EvLinkAction    *action;
2349                         EvLinkActionType type;
2350
2351                         action = ev_link_get_action (link);
2352                         if (!action)
2353                                 return FALSE;
2354
2355                         type = ev_link_action_get_action_type (action);
2356                         if (type == EV_LINK_ACTION_TYPE_GOTO_DEST) {
2357                                 g_signal_emit (view,
2358                                                signals[SIGNAL_EXTERNAL_LINK],
2359                                                0, action);
2360                         }
2361                 } else {
2362                         ev_view_handle_link (view, link);
2363                 }
2364         } else if (view->presentation) {
2365                 switch (event->button) {
2366                         case 1:
2367                                 ev_view_next_page (view);
2368                                 return TRUE;
2369                         case 3:
2370                                 ev_view_previous_page (view);
2371                                 return TRUE;
2372                 }
2373         }
2374
2375         return FALSE;
2376 }
2377
2378 /* Goto Window */
2379 /* Cut and paste from gtkwindow.c */
2380 static void
2381 send_focus_change (GtkWidget *widget,
2382                    gboolean   in)
2383 {
2384         GdkEvent *fevent = gdk_event_new (GDK_FOCUS_CHANGE);
2385
2386         g_object_ref (widget);
2387
2388         if (in)
2389                 GTK_WIDGET_SET_FLAGS (widget, GTK_HAS_FOCUS);
2390         else
2391                 GTK_WIDGET_UNSET_FLAGS (widget, GTK_HAS_FOCUS);
2392
2393         fevent->focus_change.type = GDK_FOCUS_CHANGE;
2394         fevent->focus_change.window = g_object_ref (widget->window);
2395         fevent->focus_change.in = in;
2396
2397         gtk_widget_event (widget, fevent);
2398
2399         g_object_notify (G_OBJECT (widget), "has-focus");
2400
2401         g_object_unref (widget);
2402         gdk_event_free (fevent);
2403 }
2404
2405 static void
2406 ev_view_goto_window_hide (EvView *view)
2407 {
2408         /* send focus-in event */
2409         send_focus_change (view->goto_entry, FALSE);
2410         gtk_widget_hide (view->goto_window);
2411         gtk_entry_set_text (GTK_ENTRY (view->goto_entry), "");
2412 }
2413
2414 static gboolean
2415 ev_view_goto_window_delete_event (GtkWidget   *widget,
2416                                   GdkEventAny *event,
2417                                   EvView      *view)
2418 {
2419         ev_view_goto_window_hide (view);
2420
2421         return TRUE;
2422 }
2423
2424 static gboolean
2425 key_is_numeric (guint keyval)
2426 {
2427         return ((keyval >= GDK_0 && keyval <= GDK_9) ||
2428                 (keyval >= GDK_KP_0 && keyval <= GDK_KP_9));
2429 }
2430
2431 static gboolean
2432 ev_view_goto_window_key_press_event (GtkWidget   *widget,
2433                                      GdkEventKey *event,
2434                                      EvView      *view)
2435 {
2436         switch (event->keyval) {
2437                 case GDK_Escape:
2438                 case GDK_Tab:
2439                 case GDK_KP_Tab:
2440                 case GDK_ISO_Left_Tab:
2441                         ev_view_goto_window_hide (view);
2442                         return TRUE;
2443                 case GDK_Return:
2444                 case GDK_KP_Enter:
2445                 case GDK_ISO_Enter:
2446                         return FALSE;
2447                 default:
2448                         if (!key_is_numeric (event->keyval))
2449                                 return TRUE;
2450         }
2451
2452         return FALSE;
2453 }
2454
2455 static gboolean
2456 ev_view_goto_window_button_press_event (GtkWidget      *widget,
2457                                         GdkEventButton *event,
2458                                         EvView         *view)
2459 {
2460         ev_view_goto_window_hide (view);
2461
2462         return TRUE;
2463 }
2464
2465 static void
2466 ev_view_goto_entry_activate (GtkEntry *entry,
2467                              EvView   *view)
2468 {
2469         const gchar *text;
2470         gint         page;
2471
2472         text = gtk_entry_get_text (entry);
2473         page = atoi (text) - 1;
2474
2475         ev_view_goto_window_hide (view);
2476
2477         if (page >= 0 &&
2478             page < ev_page_cache_get_n_pages (view->page_cache))
2479                 ev_page_cache_set_current_page (view->page_cache, page);
2480 }
2481
2482 static void
2483 ev_view_goto_window_create (EvView *view)
2484 {
2485         GtkWidget *frame, *hbox, *toplevel, *label;
2486
2487         toplevel = gtk_widget_get_toplevel (GTK_WIDGET (view));
2488
2489         if (view->goto_window) {
2490                 if (GTK_WINDOW (toplevel)->group)
2491                         gtk_window_group_add_window (GTK_WINDOW (toplevel)->group,
2492                                                      GTK_WINDOW (view->goto_window));
2493                 else if (GTK_WINDOW (view->goto_window)->group)
2494                         gtk_window_group_remove_window (GTK_WINDOW (view->goto_window)->group,
2495                                                         GTK_WINDOW (view->goto_window));
2496                 return;
2497         }
2498
2499         view->goto_window = gtk_window_new (GTK_WINDOW_POPUP);
2500
2501         if (GTK_WINDOW (toplevel)->group)
2502                 gtk_window_group_add_window (GTK_WINDOW (toplevel)->group,
2503                                              GTK_WINDOW (view->goto_window));
2504
2505         gtk_window_set_modal (GTK_WINDOW (view->goto_window), TRUE);
2506
2507         g_signal_connect (view->goto_window, "delete_event",
2508                           G_CALLBACK (ev_view_goto_window_delete_event),
2509                           view);
2510         g_signal_connect (view->goto_window, "key_press_event",
2511                           G_CALLBACK (ev_view_goto_window_key_press_event),
2512                           view);
2513         g_signal_connect (view->goto_window, "button_press_event",
2514                           G_CALLBACK (ev_view_goto_window_button_press_event),
2515                           view);
2516
2517         frame = gtk_frame_new (NULL);
2518         gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_ETCHED_IN);
2519         gtk_container_add (GTK_CONTAINER (view->goto_window), frame);
2520         gtk_widget_show (frame);
2521
2522         hbox = gtk_hbox_new (FALSE, 0);
2523         gtk_container_set_border_width (GTK_CONTAINER (hbox), 3);
2524         gtk_container_add (GTK_CONTAINER (frame), hbox);
2525         gtk_widget_show (hbox);
2526
2527         label = gtk_label_new(_("Jump to page:"));
2528         gtk_box_pack_start (GTK_BOX (hbox), label, TRUE, TRUE, 3);
2529         gtk_widget_show (label);
2530         gtk_widget_realize (label);
2531
2532         view->goto_entry = gtk_entry_new ();
2533         g_signal_connect (view->goto_entry, "activate",
2534                           G_CALLBACK (ev_view_goto_entry_activate),
2535                           view);
2536         gtk_box_pack_start_defaults (GTK_BOX (hbox), view->goto_entry);
2537         gtk_widget_show (view->goto_entry);
2538         gtk_widget_realize (view->goto_entry);
2539 }
2540
2541 static void
2542 ev_view_goto_entry_grab_focus (EvView *view)
2543 {
2544         GtkWidgetClass *entry_parent_class;
2545
2546         entry_parent_class = g_type_class_peek_parent (GTK_ENTRY_GET_CLASS (view->goto_entry));
2547         (entry_parent_class->grab_focus) (view->goto_entry);
2548
2549         send_focus_change (view->goto_entry, TRUE);
2550 }
2551
2552 static void
2553 ev_view_goto_window_send_key_event (EvView   *view,
2554                                     GdkEvent *event)
2555 {
2556         GdkEventKey *new_event;
2557         GdkScreen   *screen;
2558
2559         /* Move goto window off screen */
2560         screen = gtk_widget_get_screen (GTK_WIDGET (view));
2561         gtk_window_move (GTK_WINDOW (view->goto_window),
2562                          gdk_screen_get_width (screen) + 1,
2563                          gdk_screen_get_height (screen) + 1);
2564         gtk_widget_show (view->goto_window);
2565
2566         new_event = (GdkEventKey *) gdk_event_copy (event);
2567         g_object_unref (new_event->window);
2568         new_event->window = g_object_ref (view->goto_window->window);
2569         gtk_widget_realize (view->goto_window);
2570
2571         gtk_widget_event (view->goto_window, (GdkEvent *)new_event);
2572         gdk_event_free ((GdkEvent *)new_event);
2573         gtk_widget_hide (view->goto_window);
2574 }
2575
2576 static gboolean
2577 ev_view_key_press_event (GtkWidget   *widget,
2578                          GdkEventKey *event)
2579 {
2580         EvView *view = EV_VIEW (widget);
2581         EvPresentationState current;
2582
2583         if (!view->presentation ||
2584             view->presentation_state == EV_PRESENTATION_END)
2585                 return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
2586
2587
2588         current = view->presentation_state;
2589
2590         switch (event->keyval) {
2591                 case GDK_b:
2592                 case GDK_B:
2593                         view->presentation_state =
2594                                 (view->presentation_state == EV_PRESENTATION_BLACK) ?
2595                                 EV_PRESENTATION_NORMAL : EV_PRESENTATION_BLACK;
2596                         break;
2597                 case GDK_w:
2598                 case GDK_W:
2599                         view->presentation_state =
2600                                 (view->presentation_state == EV_PRESENTATION_WHITE) ?
2601                                 EV_PRESENTATION_NORMAL : EV_PRESENTATION_WHITE;
2602                         break;
2603                 default:
2604                         if (view->presentation_state == EV_PRESENTATION_BLACK ||
2605                             view->presentation_state == EV_PRESENTATION_WHITE) {
2606                                 view->presentation_state = EV_PRESENTATION_NORMAL;
2607                         }
2608         }
2609
2610         if (current == view->presentation_state) {
2611                 if (ev_page_cache_get_n_pages (view->page_cache) > 1 &&
2612                     key_is_numeric (event->keyval)) {
2613                         gint x, y;
2614
2615                         ev_view_goto_window_create (view);
2616                         ev_view_goto_window_send_key_event (view, (GdkEvent *)event);
2617                         gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
2618                         gtk_window_move (GTK_WINDOW (view->goto_window), x, y);
2619                         gtk_widget_show (view->goto_window);
2620                         ev_view_goto_entry_grab_focus (view);
2621
2622                         return TRUE;
2623                 }
2624
2625                 return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
2626         }
2627
2628         switch (view->presentation_state) {
2629                 case EV_PRESENTATION_NORMAL:
2630                 case EV_PRESENTATION_BLACK:
2631                         gdk_window_set_background (widget->window,
2632                                                    &widget->style->black);
2633                         break;
2634                 case EV_PRESENTATION_WHITE:
2635                         gdk_window_set_background (widget->window,
2636                                                    &widget->style->white);
2637                         break;
2638                 default:
2639                         return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
2640         }
2641
2642         gtk_widget_queue_draw (widget);
2643         return TRUE;
2644 }
2645
2646 static gint
2647 ev_view_focus_in (GtkWidget     *widget,
2648                   GdkEventFocus *event)
2649 {
2650         if (EV_VIEW (widget)->pixbuf_cache)
2651                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
2652         gtk_widget_queue_draw (widget);
2653
2654         return FALSE;
2655 }
2656
2657 static gint
2658 ev_view_focus_out (GtkWidget     *widget,
2659                      GdkEventFocus *event)
2660 {
2661         if (EV_VIEW (widget)->goto_window)
2662                 ev_view_goto_window_hide (EV_VIEW (widget));
2663
2664         if (EV_VIEW (widget)->pixbuf_cache)
2665                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
2666         gtk_widget_queue_draw (widget);
2667
2668         return FALSE;
2669 }
2670
2671 static gboolean
2672 ev_view_leave_notify_event (GtkWidget *widget, GdkEventCrossing   *event)
2673 {
2674         EvView *view = EV_VIEW (widget);
2675
2676         ev_view_set_status (view, NULL);
2677
2678         if (view->cursor == EV_VIEW_CURSOR_LINK ||
2679             view->cursor == EV_VIEW_CURSOR_IBEAM)
2680                 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
2681
2682         if (view->link_tooltip) {
2683                 view->hovered_link = NULL;
2684                 ev_tooltip_deactivate (EV_TOOLTIP (view->link_tooltip));
2685         }
2686
2687         return FALSE;
2688 }
2689
2690 static gboolean
2691 ev_view_enter_notify_event (GtkWidget *widget, GdkEventCrossing   *event)
2692 {
2693         EvView *view = EV_VIEW (widget);
2694
2695         handle_link_over_xy (view, event->x, event->y);
2696
2697         return FALSE;
2698 }
2699
2700 static void
2701 ev_view_style_set (GtkWidget *widget,
2702                    GtkStyle  *old_style)
2703 {
2704         if (EV_VIEW (widget)->pixbuf_cache)
2705                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
2706
2707         GTK_WIDGET_CLASS (ev_view_parent_class)->style_set (widget, old_style);
2708 }
2709
2710 /*** Drawing ***/
2711
2712 static guint32
2713 ev_gdk_color_to_rgb (const GdkColor *color)
2714 {
2715   guint32 result;
2716   result = (0xff0000 | (color->red & 0xff00));
2717   result <<= 8;
2718   result |= ((color->green & 0xff00) | (color->blue >> 8));
2719   return result;
2720 }
2721
2722 static void
2723 draw_rubberband (GtkWidget *widget, GdkWindow *window,
2724                  const GdkRectangle *rect, guchar alpha)
2725 {
2726         GdkGC *gc;
2727         GdkPixbuf *pixbuf;
2728         GdkColor *fill_color_gdk;
2729         guint fill_color;
2730
2731         fill_color_gdk = gdk_color_copy (&GTK_WIDGET (widget)->style->base[GTK_STATE_SELECTED]);
2732         fill_color = ev_gdk_color_to_rgb (fill_color_gdk) << 8 | alpha;
2733
2734         pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE, 8,
2735                                  rect->width, rect->height);
2736         gdk_pixbuf_fill (pixbuf, fill_color);
2737
2738         gdk_draw_pixbuf (window, NULL, pixbuf,
2739                          0, 0,
2740                          rect->x - EV_VIEW (widget)->scroll_x, rect->y - EV_VIEW (widget)->scroll_y,
2741                          rect->width, rect->height,
2742                          GDK_RGB_DITHER_NONE,
2743                          0, 0);
2744
2745         g_object_unref (pixbuf);
2746
2747         gc = gdk_gc_new (window);
2748         gdk_gc_set_rgb_fg_color (gc, fill_color_gdk);
2749         gdk_draw_rectangle (window, gc, FALSE,
2750                             rect->x - EV_VIEW (widget)->scroll_x, rect->y - EV_VIEW (widget)->scroll_y,
2751                             rect->width - 1,
2752                             rect->height - 1);
2753         g_object_unref (gc);
2754
2755         gdk_color_free (fill_color_gdk);
2756 }
2757
2758
2759 static void
2760 highlight_find_results (EvView *view, int page)
2761 {
2762         EvDocumentFind *find;
2763         int i, results = 0;
2764
2765         g_return_if_fail (EV_IS_DOCUMENT_FIND (view->document));
2766
2767         find = EV_DOCUMENT_FIND (view->document);
2768
2769         results = ev_document_find_get_n_results (find, page);
2770
2771         for (i = 0; i < results; i++) {
2772                 EvRectangle rectangle;
2773                 GdkRectangle view_rectangle;
2774                 guchar alpha;
2775
2776                 if (i == view->find_result && page == view->current_page) {
2777                         alpha = 0x90;
2778                 } else {
2779                         alpha = 0x20;
2780                 }
2781
2782                 ev_document_find_get_result (find, page, i, &rectangle);
2783                 doc_rect_to_view_rect (view, page, &rectangle, &view_rectangle);
2784                 draw_rubberband (GTK_WIDGET (view), GTK_WIDGET(view)->window,
2785                                  &view_rectangle, alpha);
2786         }
2787 }
2788
2789 static void
2790 draw_loading_text (EvView       *view,
2791                    GdkRectangle *page_area,
2792                    GdkRectangle *expose_area)
2793 {
2794         cairo_t *cr;
2795         gint     width, height;
2796
2797         /* Don't annoy users with loading messages during presentations.
2798          * FIXME: Temporary "workaround" for
2799          * http://bugzilla.gnome.org/show_bug.cgi?id=320352 */
2800         if (view->presentation)
2801                 return;
2802
2803         if (!view->loading_text) {
2804                 const gchar *loading_text;
2805                 PangoLayout *layout;
2806                 PangoFontDescription *font_desc;
2807                 PangoRectangle logical_rect;
2808                 gdouble real_scale;
2809                 gint target_width;
2810
2811                 loading_text = _("Loading...");
2812
2813                 ev_document_fc_mutex_lock ();
2814
2815                 layout = gtk_widget_create_pango_layout (GTK_WIDGET (view), loading_text);
2816
2817                 font_desc = pango_font_description_new ();
2818
2819                 /* We set the font to be 10 points, get the size, and scale appropriately */
2820                 pango_font_description_set_size (font_desc, 10 * PANGO_SCALE);
2821                 pango_layout_set_font_description (layout, font_desc);
2822                 pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
2823
2824                 /* Make sure we fit the middle of the page */
2825                 target_width = MAX (page_area->width / 2, 1);
2826                 real_scale = ((double)target_width / (double) logical_rect.width) * (PANGO_SCALE * 10);
2827                 pango_font_description_set_size (font_desc, (int)real_scale);
2828                 pango_layout_set_font_description (layout, font_desc);
2829                 pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
2830
2831                 view->loading_text = cairo_image_surface_create (CAIRO_FORMAT_ARGB32,
2832                                                                  logical_rect.width,
2833                                                                  logical_rect.height);
2834                 cr = cairo_create (view->loading_text);
2835                 cairo_set_source_rgb (cr,
2836                                       155 / (double)255,
2837                                       155 / (double)255,
2838                                       155 / (double)255);
2839                 pango_cairo_show_layout (cr, layout);
2840                 cairo_destroy (cr);
2841
2842                 pango_font_description_free (font_desc);
2843                 g_object_unref (layout);
2844
2845                 ev_document_fc_mutex_unlock ();
2846         }
2847
2848         width = cairo_image_surface_get_width (view->loading_text) / 2;
2849         height = (page_area->height - cairo_image_surface_get_height (view->loading_text)) / 2;
2850
2851         cr = gdk_cairo_create (GTK_WIDGET (view)->window);
2852         cairo_set_source_surface (cr, view->loading_text,
2853                                   page_area->x + width,
2854                                   page_area->y + height);
2855         cairo_paint (cr);
2856         cairo_destroy (cr);
2857 }
2858
2859 static void
2860 draw_one_page (EvView          *view,
2861                gint             page,
2862                GdkRectangle    *page_area,
2863                GtkBorder       *border,
2864                GdkRectangle    *expose_area,
2865                gboolean        *page_ready)
2866 {
2867         gint width, height;
2868         GdkPixbuf *current_pixbuf;
2869         GdkRectangle overlap;
2870         GdkRectangle real_page_area;
2871         EvViewSelection *selection;
2872         gint current_page;
2873
2874         g_assert (view->document);
2875
2876         if (! gdk_rectangle_intersect (page_area, expose_area, &overlap))
2877                 return;
2878
2879         current_page = ev_page_cache_get_current_page (view->page_cache);
2880         selection = find_selection_for_page (view, page);
2881         ev_page_cache_get_size (view->page_cache,
2882                                 page, view->rotation,
2883                                 view->scale,
2884                                 &width, &height);
2885         /* Render the document itself */
2886         real_page_area = *page_area;
2887
2888         real_page_area.x += border->left;
2889         real_page_area.y += border->top;
2890         real_page_area.width -= (border->left + border->right);
2891         real_page_area.height -= (border->top + border->bottom);
2892         *page_ready = TRUE;
2893
2894         if (!view->presentation) {
2895                 ev_document_misc_paint_one_page (GTK_WIDGET(view)->window,
2896                                                  GTK_WIDGET (view),
2897                                                  page_area, border,
2898                                                  page == current_page);
2899         }
2900
2901         if (gdk_rectangle_intersect (&real_page_area, expose_area, &overlap)) {
2902                 GdkPixbuf *selection_pixbuf = NULL;
2903                 GdkPixbuf *scaled_image;
2904                 GdkPixbuf *scaled_selection;
2905
2906                 current_pixbuf = ev_pixbuf_cache_get_pixbuf (view->pixbuf_cache, page);
2907
2908                 /* Get the selection pixbuf iff we have something to draw */
2909                 if (current_pixbuf && view->selection_mode == EV_VIEW_SELECTION_TEXT && selection)
2910                         selection_pixbuf = ev_pixbuf_cache_get_selection_pixbuf (view->pixbuf_cache,
2911                                                                                  page,
2912                                                                                  view->scale,
2913                                                                                  NULL);
2914
2915                 if (current_pixbuf == NULL)
2916                         scaled_image = NULL;
2917                 else if (width == gdk_pixbuf_get_width (current_pixbuf) &&
2918                          height == gdk_pixbuf_get_height (current_pixbuf))
2919                         scaled_image = g_object_ref (current_pixbuf);
2920                 else
2921                         /* FIXME: We don't want to scale the whole area, just the right
2922                          * area of it */
2923                         scaled_image = gdk_pixbuf_scale_simple (current_pixbuf,
2924                                                                 width, height,
2925                                                                 GDK_INTERP_NEAREST);
2926
2927                 if (selection_pixbuf == NULL)
2928                         scaled_selection = NULL;
2929                 else if (width == gdk_pixbuf_get_width (selection_pixbuf) &&
2930                          height == gdk_pixbuf_get_height (selection_pixbuf))
2931                         scaled_selection = g_object_ref (selection_pixbuf);
2932                 else
2933                         /* FIXME: We don't want to scale the whole area, just the right
2934                          * area of it */
2935                         scaled_selection = gdk_pixbuf_scale_simple (selection_pixbuf,
2936                                                                     width, height,
2937                                                                     GDK_INTERP_NEAREST);
2938
2939                 if (scaled_image) {
2940                         gdk_draw_pixbuf (GTK_WIDGET(view)->window,
2941                                          GTK_WIDGET (view)->style->fg_gc[GTK_STATE_NORMAL],
2942                                          scaled_image,
2943                                          overlap.x - real_page_area.x,
2944                                          overlap.y - real_page_area.y,
2945                                          overlap.x, overlap.y,
2946                                          overlap.width, overlap.height,
2947                                          GDK_RGB_DITHER_NORMAL,
2948                                          0, 0);
2949                         g_object_unref (scaled_image);
2950                 } else {
2951                         draw_loading_text (view,
2952                                            &real_page_area,
2953                                            expose_area);
2954                         *page_ready = FALSE;
2955                 }
2956
2957                 if (scaled_selection) {
2958                         gdk_draw_pixbuf (GTK_WIDGET(view)->window,
2959                                          GTK_WIDGET (view)->style->fg_gc[GTK_STATE_NORMAL],
2960                                          scaled_selection,
2961                                          overlap.x - real_page_area.x,
2962                                          overlap.y - real_page_area.y,
2963                                          overlap.x, overlap.y,
2964                                          overlap.width, overlap.height,
2965                                          GDK_RGB_DITHER_NORMAL,
2966                                          0, 0);
2967                         g_object_unref (scaled_selection);
2968                 }
2969         }
2970 }
2971
2972 /*** GObject functions ***/
2973
2974 static void
2975 ev_view_finalize (GObject *object)
2976 {
2977         EvView *view = EV_VIEW (object);
2978
2979         g_free (view->status);
2980         g_free (view->find_status);
2981
2982         clear_selection (view);
2983
2984         if (view->image_dnd_info.image)
2985                 g_object_unref (view->image_dnd_info.image);
2986         view->image_dnd_info.image = NULL;
2987
2988         G_OBJECT_CLASS (ev_view_parent_class)->finalize (object);
2989 }
2990
2991 static void
2992 ev_view_destroy (GtkObject *object)
2993 {
2994         EvView *view = EV_VIEW (object);
2995
2996         if (view->document) {
2997                 g_object_unref (view->document);
2998                 view->document = NULL;
2999         }
3000
3001         if (view->pixbuf_cache) {
3002                 g_object_unref (view->pixbuf_cache);
3003                 view->pixbuf_cache = NULL;
3004         }
3005
3006         if (view->link_tooltip) {
3007                 gtk_widget_destroy (view->link_tooltip);
3008                 view->link_tooltip = NULL;
3009         }
3010
3011         if (view->goto_window) {
3012                 gtk_widget_destroy (view->goto_window);
3013                 view->goto_window = NULL;
3014                 view->goto_entry = NULL;
3015         }
3016
3017         if (view->selection_scroll_id) {
3018             g_source_remove (view->selection_scroll_id);
3019             view->selection_scroll_id = 0;
3020         }
3021
3022         if (view->selection_update_id) {
3023             g_source_remove (view->selection_update_id);
3024             view->selection_update_id = 0;
3025         }
3026
3027         if (view->loading_text) {
3028                 cairo_surface_destroy (view->loading_text);
3029                 view->loading_text = NULL;
3030         }
3031
3032         ev_view_presentation_transition_stop (view);
3033
3034         ev_view_set_scroll_adjustments (view, NULL, NULL);
3035
3036         GTK_OBJECT_CLASS (ev_view_parent_class)->destroy (object);
3037 }
3038
3039 static void
3040 ev_view_set_property (GObject      *object,
3041                       guint         prop_id,
3042                       const GValue *value,
3043                       GParamSpec   *pspec)
3044 {
3045         EvView *view = EV_VIEW (object);
3046
3047         switch (prop_id) {
3048                 case PROP_CONTINUOUS:
3049                         ev_view_set_continuous (view, g_value_get_boolean (value));
3050                         break;
3051                 case PROP_DUAL_PAGE:
3052                         ev_view_set_dual_page (view, g_value_get_boolean (value));
3053                         break;
3054                 case PROP_FULLSCREEN:
3055                         ev_view_set_fullscreen (view, g_value_get_boolean (value));
3056                         break;
3057                 case PROP_PRESENTATION:
3058                         ev_view_set_presentation (view, g_value_get_boolean (value));
3059                         break;
3060                 case PROP_SIZING_MODE:
3061                         ev_view_set_sizing_mode (view, g_value_get_enum (value));
3062                         break;
3063                 case PROP_ZOOM:
3064                         ev_view_set_zoom (view, g_value_get_double (value), FALSE);
3065                         break;
3066                 case PROP_ROTATION:
3067                         ev_view_set_rotation (view, g_value_get_int (value));
3068                         break;
3069                 default:
3070                         G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
3071         }
3072 }
3073
3074 static AtkObject *
3075 ev_view_get_accessible (GtkWidget *widget)
3076 {
3077         static gboolean first_time = TRUE;
3078
3079         if (first_time) {
3080                 AtkObjectFactory *factory;
3081                 AtkRegistry *registry;
3082                 GType derived_type;
3083                 GType derived_atk_type;
3084
3085                 /*
3086                  * Figure out whether accessibility is enabled by looking at the
3087                  * type of the accessible object which would be created for
3088                  * the parent type of EvView.
3089                  */
3090                 derived_type = g_type_parent (EV_TYPE_VIEW);
3091
3092                 registry = atk_get_default_registry ();
3093                 factory = atk_registry_get_factory (registry,
3094                                                     derived_type);
3095                 derived_atk_type = atk_object_factory_get_accessible_type (factory);
3096                 if (g_type_is_a (derived_atk_type, GTK_TYPE_ACCESSIBLE))
3097                         atk_registry_set_factory_type (registry,
3098                                                        EV_TYPE_VIEW,
3099                                                        ev_view_accessible_factory_get_type ());
3100                 first_time = FALSE;
3101         }
3102         return GTK_WIDGET_CLASS (ev_view_parent_class)->get_accessible (widget);
3103 }
3104
3105 static void
3106 ev_view_get_property (GObject *object,
3107                       guint prop_id,
3108                       GValue *value,
3109                       GParamSpec *pspec)
3110 {
3111         EvView *view = EV_VIEW (object);
3112
3113         switch (prop_id) {
3114                 case PROP_STATUS:
3115                         g_value_set_string (value, view->status);
3116                         break;
3117                 case PROP_FIND_STATUS:
3118                         g_value_set_string (value, view->status);
3119                         break;
3120                 case PROP_CONTINUOUS:
3121                         g_value_set_boolean (value, view->continuous);
3122                         break;
3123                 case PROP_DUAL_PAGE:
3124                         g_value_set_boolean (value, view->dual_page);
3125                         break;
3126                 case PROP_FULLSCREEN:
3127                         g_value_set_boolean (value, view->fullscreen);
3128                         break;
3129                 case PROP_PRESENTATION:
3130                         g_value_set_boolean (value, view->presentation);
3131                         break;
3132                 case PROP_SIZING_MODE:
3133                         g_value_set_enum (value, view->sizing_mode);
3134                         break;
3135                 case PROP_ZOOM:
3136                         g_value_set_double (value, view->scale);
3137                         break;
3138                 case PROP_ROTATION:
3139                         g_value_set_int (value, view->rotation);
3140                         break;
3141                 case PROP_HAS_SELECTION:
3142                         g_value_set_boolean (value,
3143                                              view->selection_info.selections != NULL);
3144                         break;
3145                 default:
3146                         G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
3147         }
3148 }
3149
3150 static void
3151 ev_view_class_init (EvViewClass *class)
3152 {
3153         GObjectClass *object_class = G_OBJECT_CLASS (class);
3154         GtkObjectClass *gtk_object_class = GTK_OBJECT_CLASS (class);
3155         GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
3156         GtkBindingSet *binding_set;
3157
3158         object_class->finalize = ev_view_finalize;
3159         object_class->set_property = ev_view_set_property;
3160         object_class->get_property = ev_view_get_property;
3161
3162         widget_class->expose_event = ev_view_expose_event;
3163         widget_class->button_press_event = ev_view_button_press_event;
3164         widget_class->motion_notify_event = ev_view_motion_notify_event;
3165         widget_class->button_release_event = ev_view_button_release_event;
3166         widget_class->key_press_event = ev_view_key_press_event;
3167         widget_class->focus_in_event = ev_view_focus_in;
3168         widget_class->focus_out_event = ev_view_focus_out;
3169         widget_class->get_accessible = ev_view_get_accessible;
3170         widget_class->size_request = ev_view_size_request;
3171         widget_class->size_allocate = ev_view_size_allocate;
3172         widget_class->realize = ev_view_realize;
3173         widget_class->scroll_event = ev_view_scroll_event;
3174         widget_class->enter_notify_event = ev_view_enter_notify_event;
3175         widget_class->leave_notify_event = ev_view_leave_notify_event;
3176         widget_class->style_set = ev_view_style_set;
3177         widget_class->drag_data_get = ev_view_drag_data_get;
3178         widget_class->drag_motion = ev_view_drag_motion;
3179         widget_class->drag_data_received = ev_view_drag_data_received;
3180         widget_class->popup_menu = ev_view_popup_menu;
3181         gtk_object_class->destroy = ev_view_destroy;
3182
3183         class->set_scroll_adjustments = ev_view_set_scroll_adjustments;
3184         class->binding_activated = ev_view_scroll;
3185
3186         widget_class->set_scroll_adjustments_signal =
3187             g_signal_new ("set-scroll-adjustments",
3188                           G_OBJECT_CLASS_TYPE (object_class),
3189                           G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
3190                           G_STRUCT_OFFSET (EvViewClass, set_scroll_adjustments),
3191                           NULL, NULL,
3192                           ev_marshal_VOID__OBJECT_OBJECT,
3193                           G_TYPE_NONE, 2,
3194                           GTK_TYPE_ADJUSTMENT,
3195                           GTK_TYPE_ADJUSTMENT);
3196
3197         signals[SIGNAL_BINDING_ACTIVATED] = g_signal_new ("binding_activated",
3198                          G_TYPE_FROM_CLASS (object_class),
3199                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
3200                          G_STRUCT_OFFSET (EvViewClass, binding_activated),
3201                          NULL, NULL,
3202                          ev_marshal_VOID__ENUM_BOOLEAN,
3203                          G_TYPE_NONE, 2,
3204                          GTK_TYPE_SCROLL_TYPE,
3205                          G_TYPE_BOOLEAN);
3206
3207         signals[SIGNAL_ZOOM_INVALID] = g_signal_new ("zoom-invalid",
3208                          G_TYPE_FROM_CLASS (object_class),
3209                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
3210                          G_STRUCT_OFFSET (EvViewClass, zoom_invalid),
3211                          NULL, NULL,
3212                          ev_marshal_VOID__VOID,
3213                          G_TYPE_NONE, 0, G_TYPE_NONE);
3214         signals[SIGNAL_HANDLE_LINK] = g_signal_new ("handle-link",
3215                          G_TYPE_FROM_CLASS (object_class),
3216                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
3217                          G_STRUCT_OFFSET (EvViewClass, handle_link),
3218                          NULL, NULL,
3219                          g_cclosure_marshal_VOID__OBJECT,
3220                          G_TYPE_NONE, 1,
3221                          G_TYPE_OBJECT);
3222         signals[SIGNAL_EXTERNAL_LINK] = g_signal_new ("external-link",
3223                          G_TYPE_FROM_CLASS (object_class),
3224                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
3225                          G_STRUCT_OFFSET (EvViewClass, external_link),
3226                          NULL, NULL,
3227                          g_cclosure_marshal_VOID__OBJECT,
3228                          G_TYPE_NONE, 1,
3229                          G_TYPE_OBJECT);
3230         signals[SIGNAL_POPUP_MENU] = g_signal_new ("popup",
3231                          G_TYPE_FROM_CLASS (object_class),
3232                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
3233                          G_STRUCT_OFFSET (EvViewClass, popup_menu),
3234                          NULL, NULL,
3235                          g_cclosure_marshal_VOID__OBJECT,
3236                          G_TYPE_NONE, 1,
3237                          G_TYPE_OBJECT);
3238
3239         g_object_class_install_property (object_class,
3240                                          PROP_STATUS,
3241                                          g_param_spec_string ("status",
3242                                                               "Status Message",
3243                                                               "The status message",
3244                                                               NULL,
3245                                                               G_PARAM_READABLE));
3246
3247         g_object_class_install_property (object_class,
3248                                          PROP_FIND_STATUS,
3249                                          g_param_spec_string ("find-status",
3250                                                               "Find Status Message",
3251                                                               "The find status message",
3252                                                               NULL,
3253                                                               G_PARAM_READABLE));
3254
3255         g_object_class_install_property (object_class,
3256                                          PROP_CONTINUOUS,
3257                                          g_param_spec_boolean ("continuous",
3258                                                                "Continuous",
3259                                                                "Continuous scrolling mode",
3260                                                                TRUE,
3261                                                                G_PARAM_READWRITE));
3262
3263         g_object_class_install_property (object_class,
3264                                          PROP_DUAL_PAGE,
3265                                          g_param_spec_boolean ("dual-page",
3266                                                                "Dual Page",
3267                                                                "Two pages visible at once",
3268                                                                FALSE,
3269                                                                G_PARAM_READWRITE));
3270         g_object_class_install_property (object_class,
3271                                          PROP_FULLSCREEN,
3272                                          g_param_spec_boolean ("fullscreen",
3273                                                                "Full Screen",
3274                                                                "Draw page in a fullscreen fashion",
3275                                                                FALSE,
3276                                                                G_PARAM_READWRITE));
3277         g_object_class_install_property (object_class,
3278                                          PROP_PRESENTATION,
3279                                          g_param_spec_boolean ("presentation",
3280                                                                "Presentation",
3281                                                                "Draw page in presentation mode",
3282                                                                TRUE,
3283                                                                G_PARAM_READWRITE));
3284
3285         g_object_class_install_property (object_class,
3286                                          PROP_SIZING_MODE,
3287                                          g_param_spec_enum ("sizing-mode",
3288                                                             "Sizing Mode",
3289                                                             "Sizing Mode",
3290                                                             EV_TYPE_SIZING_MODE,
3291                                                             EV_SIZING_FIT_WIDTH,
3292                                                             G_PARAM_READWRITE));
3293
3294         g_object_class_install_property (object_class,
3295                                          PROP_ZOOM,
3296                                          g_param_spec_double ("zoom",
3297                                                               "Zoom factor",
3298                                                               "Zoom factor",
3299                                                               0,
3300                                                               G_MAXDOUBLE,
3301                                                               1.0,
3302                                                               G_PARAM_READWRITE));
3303         g_object_class_install_property (object_class,
3304                                          PROP_ROTATION,
3305                                          g_param_spec_double ("rotation",
3306                                                               "Rotation",
3307                                                               "Rotation",
3308                                                               0,
3309                                                               360,
3310                                                               0,
3311                                                               G_PARAM_READWRITE));
3312         g_object_class_install_property (object_class,
3313                                          PROP_HAS_SELECTION,
3314                                          g_param_spec_boolean ("has-selection",
3315                                                                "Has selection",
3316                                                                "The view has selections",
3317                                                                FALSE,
3318                                                                G_PARAM_READABLE));
3319
3320         binding_set = gtk_binding_set_by_class (class);
3321
3322         add_scroll_binding_keypad (binding_set, GDK_Left,  0, EV_SCROLL_STEP_BACKWARD, TRUE);
3323         add_scroll_binding_keypad (binding_set, GDK_Right, 0, EV_SCROLL_STEP_FORWARD,  TRUE);
3324         add_scroll_binding_keypad (binding_set, GDK_Left,  GDK_MOD1_MASK, EV_SCROLL_STEP_DOWN, TRUE);
3325         add_scroll_binding_keypad (binding_set, GDK_Right, GDK_MOD1_MASK, EV_SCROLL_STEP_UP,  TRUE);
3326         add_scroll_binding_keypad (binding_set, GDK_Up,    0, EV_SCROLL_STEP_BACKWARD, FALSE);
3327         add_scroll_binding_keypad (binding_set, GDK_Down,  0, EV_SCROLL_STEP_FORWARD,  FALSE);
3328         add_scroll_binding_keypad (binding_set, GDK_Up,    GDK_MOD1_MASK, EV_SCROLL_STEP_DOWN, FALSE);
3329         add_scroll_binding_keypad (binding_set, GDK_Down,  GDK_MOD1_MASK, EV_SCROLL_STEP_UP,  FALSE);
3330 }
3331
3332 static void
3333 ev_view_init (EvView *view)
3334 {
3335         GTK_WIDGET_SET_FLAGS (view, GTK_CAN_FOCUS);
3336
3337         view->spacing = 5;
3338         view->scale = 1.0;
3339         view->current_page = 0;
3340         view->pressed_button = -1;
3341         view->cursor = EV_VIEW_CURSOR_NORMAL;
3342         view->drag_info.in_drag = FALSE;
3343         view->selection_info.selections = NULL;
3344         view->selection_info.in_selection = FALSE;
3345         view->selection_info.in_drag = FALSE;
3346         view->selection_mode = EV_VIEW_SELECTION_TEXT;
3347         view->continuous = TRUE;
3348         view->dual_page = FALSE;
3349         view->presentation = FALSE;
3350         view->presentation_state = EV_PRESENTATION_NORMAL;
3351         view->fullscreen = FALSE;
3352         view->sizing_mode = EV_SIZING_FIT_WIDTH;
3353         view->pending_scroll = SCROLL_TO_KEEP_POSITION;
3354         view->jump_to_find_result = TRUE;
3355
3356         gtk_drag_dest_set (GTK_WIDGET (view),
3357                            GTK_DEST_DEFAULT_ALL,
3358                            view_drop_targets,
3359                            G_N_ELEMENTS (view_drop_targets),
3360                            GDK_ACTION_COPY);
3361 }
3362
3363 /*** Callbacks ***/
3364
3365 static void
3366 find_changed_cb (EvDocument *document, int page, EvView *view)
3367 {
3368         double percent;
3369         int n_pages;
3370
3371         percent = ev_document_find_get_progress
3372                         (EV_DOCUMENT_FIND (view->document));
3373         n_pages = ev_page_cache_get_n_pages (view->page_cache);
3374
3375         if (view->jump_to_find_result == TRUE) {
3376                 jump_to_find_page (view, EV_VIEW_FIND_NEXT, 0);
3377                 jump_to_find_result (view);
3378         }
3379         update_find_status_message (view, percent * n_pages >= n_pages - 1 );
3380         if (view->current_page == page)
3381                 gtk_widget_queue_draw (GTK_WIDGET (view));
3382 }
3383
3384 static void
3385 job_finished_cb (EvPixbufCache *pixbuf_cache,
3386                  EvView        *view)
3387 {
3388         gtk_widget_queue_draw (GTK_WIDGET (view));
3389 }
3390
3391 static void
3392 page_changed_cb (EvPageCache *page_cache,
3393                  int          new_page,
3394                  EvView      *view)
3395 {
3396         if (view->current_page != new_page) {
3397                 view->current_page = new_page;
3398                 view->pending_scroll = SCROLL_TO_PAGE_POSITION;
3399                 if (view->presentation)
3400                         ev_view_presentation_transition_start (view);
3401                 gtk_widget_queue_resize (GTK_WIDGET (view));
3402         } else {
3403                 gtk_widget_queue_draw (GTK_WIDGET (view));
3404         }
3405
3406         if (EV_IS_DOCUMENT_FIND (view->document)) {
3407                 view->find_result = 0;
3408                 update_find_status_message (view, TRUE);
3409         }
3410 }
3411
3412 static void on_adjustment_value_changed (GtkAdjustment  *adjustment,
3413                                          EvView *view)
3414 {
3415         int dx = 0, dy = 0;
3416
3417         if (! GTK_WIDGET_REALIZED (view))
3418                 return;
3419
3420         if (view->hadjustment) {
3421                 dx = view->scroll_x - (int) view->hadjustment->value;
3422                 view->scroll_x = (int) view->hadjustment->value;
3423         } else {
3424                 view->scroll_x = 0;
3425         }
3426
3427         if (view->vadjustment) {
3428                 dy = view->scroll_y - (int) view->vadjustment->value;
3429                 view->scroll_y = (int) view->vadjustment->value;
3430         } else {
3431                 view->scroll_y = 0;
3432         }
3433
3434
3435         if (view->pending_resize)
3436                 gtk_widget_queue_draw (GTK_WIDGET (view));
3437         else
3438                 gdk_window_scroll (GTK_WIDGET (view)->window, dx, dy);
3439
3440
3441         if (view->document)
3442                 view_update_range_and_current_page (view);
3443 }
3444
3445 GtkWidget*
3446 ev_view_new (void)
3447 {
3448         GtkWidget *view;
3449
3450         view = g_object_new (EV_TYPE_VIEW, NULL);
3451
3452         return view;
3453 }
3454
3455 static void
3456 setup_caches (EvView *view)
3457 {
3458         view->page_cache = ev_page_cache_get (view->document);
3459         g_signal_connect (view->page_cache, "page-changed", G_CALLBACK (page_changed_cb), view);
3460         view->pixbuf_cache = ev_pixbuf_cache_new (GTK_WIDGET (view), view->document);
3461         g_signal_connect (view->pixbuf_cache, "job-finished", G_CALLBACK (job_finished_cb), view);
3462 }
3463
3464 static void
3465 clear_caches (EvView *view)
3466 {
3467         if (view->pixbuf_cache) {
3468                 g_object_unref (view->pixbuf_cache);
3469                 view->pixbuf_cache = NULL;
3470         }
3471
3472         if (view->page_cache) {
3473                 view->page_cache = NULL;
3474         }
3475 }
3476
3477 void
3478 ev_view_set_loading (EvView       *view,
3479                      gboolean      loading)
3480 {
3481         view->loading = loading;
3482         gtk_widget_queue_draw (GTK_WIDGET (view));
3483 }
3484
3485 void
3486 ev_view_set_document (EvView     *view,
3487                       EvDocument *document)
3488 {
3489         g_return_if_fail (EV_IS_VIEW (view));
3490
3491         view->loading = FALSE;
3492
3493         if (document != view->document) {
3494                 clear_caches (view);
3495
3496                 if (view->document) {
3497                         g_signal_handlers_disconnect_by_func (view->document,
3498                                                               find_changed_cb,
3499                                                               view);
3500                         g_object_unref (view->document);
3501                         view->page_cache = NULL;
3502
3503                 }
3504
3505                 view->document = document;
3506                 view->find_result = 0;
3507
3508                 if (view->document) {
3509                         g_object_ref (view->document);
3510                         if (EV_IS_DOCUMENT_FIND (view->document)) {
3511                                 g_signal_connect (view->document,
3512                                                   "find_changed",
3513                                                   G_CALLBACK (find_changed_cb),
3514                                                   view);
3515                         }
3516
3517                         setup_caches (view);
3518                 }
3519
3520                 gtk_widget_queue_resize (GTK_WIDGET (view));
3521         }
3522 }
3523
3524 /*** Zoom and sizing mode ***/
3525
3526 #define EPSILON 0.0000001
3527 void
3528 ev_view_set_zoom (EvView   *view,
3529                   double    factor,
3530                   gboolean  relative)
3531 {
3532         double scale;
3533
3534         if (relative)
3535                 scale = view->scale * factor;
3536         else
3537                 scale = factor;
3538
3539         scale = CLAMP (scale, view->min_scale, view->max_scale);
3540
3541         if (ABS (view->scale - scale) < EPSILON)
3542                 return;
3543
3544         if (view->loading_text) {
3545                 cairo_surface_destroy (view->loading_text);
3546                 view->loading_text = NULL;
3547         }
3548
3549         view->scale = scale;
3550         view->pending_resize = TRUE;
3551
3552         gtk_widget_queue_resize (GTK_WIDGET (view));
3553
3554         g_object_notify (G_OBJECT (view), "zoom");
3555 }
3556
3557 double
3558 ev_view_get_zoom (EvView *view)
3559 {
3560         return view->scale;
3561 }
3562
3563 void
3564 ev_view_set_screen_dpi (EvView  *view,
3565                         gdouble  dpi)
3566 {
3567         g_return_if_fail (EV_IS_VIEW (view));
3568         g_return_if_fail (dpi > 0);
3569
3570         view->dpi = dpi;
3571         view->min_scale = MIN_SCALE * dpi / 72.0;
3572         view->max_scale = MAX_SCALE * dpi / 72.0;
3573 }
3574
3575 gboolean
3576 ev_view_get_continuous (EvView *view)
3577 {
3578         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
3579
3580         return view->continuous;
3581 }
3582
3583 void
3584 ev_view_set_continuous (EvView   *view,
3585                         gboolean  continuous)
3586 {
3587         g_return_if_fail (EV_IS_VIEW (view));
3588
3589         continuous = continuous != FALSE;
3590
3591         if (view->continuous != continuous) {
3592                 view->continuous = continuous;
3593                 view->pending_scroll = SCROLL_TO_PAGE_POSITION;
3594                 gtk_widget_queue_resize (GTK_WIDGET (view));
3595         }
3596
3597         g_object_notify (G_OBJECT (view), "continuous");
3598 }
3599
3600 gboolean
3601 ev_view_get_dual_page (EvView *view)
3602 {
3603         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
3604
3605         return view->dual_page;
3606 }
3607
3608 void
3609 ev_view_set_dual_page (EvView   *view,
3610                        gboolean  dual_page)
3611 {
3612         g_return_if_fail (EV_IS_VIEW (view));
3613
3614         dual_page = dual_page != FALSE;
3615
3616         if (view->dual_page == dual_page)
3617                 return;
3618
3619         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
3620         view->dual_page = dual_page;
3621         /* FIXME: if we're keeping the pixbuf cache around, we should extend the
3622          * preload_cache_size to be 2 if dual_page is set.
3623          */
3624         gtk_widget_queue_resize (GTK_WIDGET (view));
3625
3626         g_object_notify (G_OBJECT (view), "dual-page");
3627 }
3628
3629 void
3630 ev_view_set_fullscreen (EvView   *view,
3631                          gboolean  fullscreen)
3632 {
3633         g_return_if_fail (EV_IS_VIEW (view));
3634
3635         fullscreen = fullscreen != FALSE;
3636
3637         if (view->fullscreen == fullscreen)
3638                 return;
3639
3640         view->fullscreen = fullscreen;
3641         gtk_widget_queue_resize (GTK_WIDGET (view));
3642
3643         g_object_notify (G_OBJECT (view), "fullscreen");
3644 }
3645
3646 gboolean
3647 ev_view_get_fullscreen (EvView *view)
3648 {
3649         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
3650
3651         return view->fullscreen;
3652 }
3653
3654 void
3655 ev_view_set_presentation (EvView   *view,
3656                           gboolean  presentation)
3657 {
3658         g_return_if_fail (EV_IS_VIEW (view));
3659
3660         presentation = presentation != FALSE;
3661
3662         if (view->presentation == presentation)
3663                 return;
3664
3665         if (!presentation)
3666                 view->presentation_state = EV_PRESENTATION_NORMAL;
3667
3668         view->presentation = presentation;
3669         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
3670
3671         if (presentation) {
3672                 view->sizing_mode_saved = view->sizing_mode;
3673                 view->scale_saved = view->scale;
3674                 ev_view_set_sizing_mode (view, EV_SIZING_BEST_FIT);
3675         } else {
3676                 ev_view_set_sizing_mode (view, view->sizing_mode_saved);
3677                 ev_view_set_zoom (view, view->scale_saved, FALSE);
3678         }
3679
3680         gtk_widget_queue_resize (GTK_WIDGET (view));
3681
3682         if (presentation)
3683                 ev_view_presentation_transition_start (view);
3684         else
3685                 ev_view_presentation_transition_stop (view);
3686
3687         if (GTK_WIDGET_REALIZED (view)) {
3688                 if (view->presentation)
3689                         gdk_window_set_background (GTK_WIDGET(view)->window,
3690                                                    &GTK_WIDGET (view)->style->black);
3691                 else
3692                         gdk_window_set_background (GTK_WIDGET(view)->window,
3693                                                    &GTK_WIDGET (view)->style->mid [GTK_STATE_NORMAL]);
3694         }
3695
3696         g_object_notify (G_OBJECT (view), "presentation");
3697 }
3698
3699 gboolean
3700 ev_view_get_presentation (EvView *view)
3701 {
3702         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
3703
3704         return view->presentation;
3705 }
3706
3707 static gboolean
3708 transition_next_page (EvView *view)
3709 {
3710         ev_view_next_page (view);
3711
3712         return FALSE;
3713 }
3714
3715 static void
3716 ev_view_presentation_transition_stop (EvView *view)
3717 {
3718         if (view->trans_timeout_id > 0)
3719                 g_source_remove (view->trans_timeout_id);
3720         view->trans_timeout_id = 0;
3721 }
3722
3723 static void
3724 ev_view_presentation_transition_start (EvView *view)
3725 {
3726         gdouble duration;
3727
3728         if (!EV_IS_DOCUMENT_TRANSITION (view->document))
3729                 return;
3730
3731         ev_view_presentation_transition_stop (view);
3732
3733         duration = ev_document_transition_get_page_duration (EV_DOCUMENT_TRANSITION (view->document),
3734                                                              view->current_page);
3735         if (duration > 0)
3736                 view->trans_timeout_id = g_timeout_add (duration * 1000,
3737                                                         (GSourceFunc) transition_next_page,
3738                                                         view);
3739 }
3740
3741 void
3742 ev_view_set_sizing_mode (EvView       *view,
3743                          EvSizingMode  sizing_mode)
3744 {
3745         g_return_if_fail (EV_IS_VIEW (view));
3746
3747         if (view->sizing_mode == sizing_mode)
3748                 return;
3749
3750         view->sizing_mode = sizing_mode;
3751         gtk_widget_queue_resize (GTK_WIDGET (view));
3752
3753         g_object_notify (G_OBJECT (view), "sizing-mode");
3754 }
3755
3756 EvSizingMode
3757 ev_view_get_sizing_mode (EvView *view)
3758 {
3759         g_return_val_if_fail (EV_IS_VIEW (view), EV_SIZING_FREE);
3760
3761         return view->sizing_mode;
3762 }
3763
3764 gboolean
3765 ev_view_can_zoom_in (EvView *view)
3766 {
3767         return view->scale * ZOOM_IN_FACTOR <= view->max_scale;
3768 }
3769
3770 gboolean
3771 ev_view_can_zoom_out (EvView *view)
3772 {
3773         return view->scale * ZOOM_OUT_FACTOR >= view->min_scale;
3774 }
3775
3776 void
3777 ev_view_zoom_in (EvView *view)
3778 {
3779         g_return_if_fail (view->sizing_mode == EV_SIZING_FREE);
3780
3781         view->pending_scroll = SCROLL_TO_CENTER;
3782         ev_view_set_zoom (view, ZOOM_IN_FACTOR, TRUE);
3783 }
3784
3785 void
3786 ev_view_zoom_out (EvView *view)
3787 {
3788         g_return_if_fail (view->sizing_mode == EV_SIZING_FREE);
3789
3790         view->pending_scroll = SCROLL_TO_CENTER;
3791         ev_view_set_zoom (view, ZOOM_OUT_FACTOR, TRUE);
3792 }
3793
3794 void
3795 ev_view_rotate_right (EvView *view)
3796 {
3797         int rotation = view->rotation + 90;
3798
3799         if (rotation >= 360) {
3800                 rotation -= 360;
3801         }
3802
3803         ev_view_set_rotation (view, rotation);
3804 }
3805
3806 void
3807 ev_view_rotate_left (EvView *view)
3808 {
3809         int rotation = view->rotation - 90;
3810
3811         if (rotation < 0) {
3812                 rotation += 360;
3813         }
3814
3815         ev_view_set_rotation (view, rotation);
3816 }
3817
3818 void
3819 ev_view_set_rotation (EvView *view, int rotation)
3820 {
3821         view->rotation = rotation;
3822
3823         if (view->pixbuf_cache) {
3824                 ev_pixbuf_cache_clear (view->pixbuf_cache);
3825                 gtk_widget_queue_resize (GTK_WIDGET (view));
3826         }
3827
3828         if (rotation != 0)
3829                 clear_selection (view);
3830
3831         g_object_notify (G_OBJECT (view), "rotation");
3832 }
3833
3834 int
3835 ev_view_get_rotation (EvView *view)
3836 {
3837         return view->rotation;
3838 }
3839
3840 static double
3841 zoom_for_size_fit_width (int doc_width,
3842                          int doc_height,
3843                          int target_width,
3844                          int target_height,
3845                          int vsb_width)
3846 {
3847         double scale;
3848
3849         scale = (double)target_width / doc_width;
3850
3851         if (doc_height * scale > target_height)
3852                 scale = (double) (target_width - vsb_width) / doc_width;
3853
3854         return scale;
3855 }
3856
3857 static double
3858 zoom_for_size_fit_height (int doc_width,
3859                           int doc_height,
3860                           int target_width,
3861                           int target_height,
3862                           int vsb_height)
3863 {
3864         double scale;
3865
3866         scale = (double)target_height / doc_height;
3867
3868         if (doc_width * scale > target_width)
3869                 scale = (double) (target_height - vsb_height) / doc_height;
3870
3871         return scale;
3872 }
3873
3874 static double
3875 zoom_for_size_best_fit (int doc_width,
3876                         int doc_height,
3877                         int target_width,
3878                         int target_height,
3879                         int vsb_width,
3880                         int hsb_width)
3881 {
3882         double w_scale;
3883         double h_scale;
3884
3885         w_scale = (double)target_width / doc_width;
3886         h_scale = (double)target_height / doc_height;
3887
3888         if (doc_height * w_scale > target_height)
3889                 w_scale = (double) (target_width - vsb_width) / doc_width;
3890         if (doc_width * h_scale > target_width)
3891                 h_scale = (double) (target_height - hsb_width) / doc_height;
3892
3893         return MIN (w_scale, h_scale);
3894 }
3895
3896
3897 static void
3898 ev_view_zoom_for_size_presentation (EvView *view,
3899                                     int     width,
3900                                     int     height)
3901 {
3902         int doc_width, doc_height;
3903         gdouble scale;
3904
3905         ev_page_cache_get_size (view->page_cache,
3906                                 view->current_page,
3907                                 view->rotation,
3908                                 1.0,
3909                                 &doc_width,
3910                                 &doc_height);
3911         scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, 0, 0);
3912         ev_view_set_zoom (view, scale, FALSE);
3913 }
3914
3915 static void
3916 ev_view_zoom_for_size_continuous_and_dual_page (EvView *view,
3917                            int     width,
3918                            int     height,
3919                            int     vsb_width,
3920                            int     hsb_height)
3921 {
3922         int doc_width, doc_height;
3923         GtkBorder border;
3924         gdouble scale;
3925
3926         ev_page_cache_get_max_width (view->page_cache,
3927                                      view->rotation,
3928                                      1.0,
3929                                      &doc_width);
3930         ev_page_cache_get_max_height (view->page_cache,
3931                                       view->rotation,
3932                                       1.0,
3933                                       &doc_height);
3934         compute_border (view, doc_width, doc_height, &border);
3935
3936         doc_width = doc_width * 2;
3937         width -= (2 * (border.left + border.right) + 3 * view->spacing);
3938         height -= (border.top + border.bottom + 2 * view->spacing - 1);
3939
3940         /* FIXME: We really need to calculate the overall height here, not the
3941          * page height.  We assume there's always a vertical scrollbar for
3942          * now.  We need to fix this. */
3943         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
3944                 scale = zoom_for_size_fit_width (doc_width, doc_height, width - vsb_width, height, 0);
3945         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
3946                 scale = zoom_for_size_best_fit (doc_width, doc_height, width - vsb_width, height, 0, hsb_height);
3947         else
3948                 g_assert_not_reached ();
3949
3950         ev_view_set_zoom (view, scale, FALSE);
3951 }
3952
3953 static void
3954 ev_view_zoom_for_size_continuous (EvView *view,
3955                                   int     width,
3956                                   int     height,
3957                                   int     vsb_width,
3958                                   int     hsb_height)
3959 {
3960         int doc_width, doc_height;
3961         GtkBorder border;
3962         gdouble scale;
3963
3964         ev_page_cache_get_max_width (view->page_cache,
3965                                      view->rotation,
3966                                      1.0,
3967                                      &doc_width);
3968         ev_page_cache_get_max_height (view->page_cache,
3969                                       view->rotation,
3970                                       1.0,
3971                                       &doc_height);
3972         compute_border (view, doc_width, doc_height, &border);
3973
3974         width -= (border.left + border.right + 2 * view->spacing);
3975         height -= (border.top + border.bottom + 2 * view->spacing - 1);
3976
3977         /* FIXME: We really need to calculate the overall height here, not the
3978          * page height.  We assume there's always a vertical scrollbar for
3979          * now.  We need to fix this. */
3980         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
3981                 scale = zoom_for_size_fit_width (doc_width, doc_height, width - vsb_width, height, 0);
3982         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
3983                 scale = zoom_for_size_best_fit (doc_width, doc_height, width - vsb_width, height, 0, hsb_height);
3984         else
3985                 g_assert_not_reached ();
3986
3987         ev_view_set_zoom (view, scale, FALSE);
3988 }
3989
3990 static void
3991 ev_view_zoom_for_size_dual_page (EvView *view,
3992                                  int     width,
3993                                  int     height,
3994                                  int     vsb_width,
3995                                  int     hsb_height)
3996 {
3997         GtkBorder border;
3998         gint doc_width, doc_height;
3999         gdouble scale;
4000         gint other_page;
4001
4002         other_page = view->current_page ^ 1;
4003
4004         /* Find the largest of the two. */
4005         ev_page_cache_get_size (view->page_cache,
4006                                 view->current_page,
4007                                 view->rotation,
4008                                 1.0,
4009                                 &doc_width, &doc_height);
4010
4011         if (other_page < ev_page_cache_get_n_pages (view->page_cache)) {
4012                 gint width_2, height_2;
4013                 ev_page_cache_get_size (view->page_cache,
4014                                         other_page,
4015                                         view->rotation,
4016                                         1.0,
4017                                         &width_2, &height_2);
4018                 if (width_2 > doc_width)
4019                         doc_width = width_2;
4020                 if (height_2 > doc_height)
4021                         doc_height = height_2;
4022         }
4023         compute_border (view, doc_width, doc_height, &border);
4024
4025         doc_width = doc_width * 2;
4026         width -= ((border.left + border.right)* 2 + 3 * view->spacing);
4027         height -= (border.top + border.bottom + 2 * view->spacing);
4028
4029         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
4030                 scale = zoom_for_size_fit_width (doc_width, doc_height, width, height, vsb_width);
4031         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
4032                 scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, vsb_width, hsb_height);
4033         else
4034                 g_assert_not_reached ();
4035
4036         ev_view_set_zoom (view, scale, FALSE);
4037 }
4038
4039 static void
4040 ev_view_zoom_for_size_single_page (EvView *view,
4041                                    int     width,
4042                                    int     height,
4043                                    int     vsb_width,
4044                                    int     hsb_height)
4045 {
4046         int doc_width, doc_height;
4047         GtkBorder border;
4048         gdouble scale;
4049
4050         ev_page_cache_get_size (view->page_cache,
4051                                 view->current_page,
4052                                 view->rotation,
4053                                 1.0,
4054                                 &doc_width,
4055                                 &doc_height);
4056         /* Get an approximate border */
4057         compute_border (view, width, height, &border);
4058
4059         width -= (border.left + border.right + 2 * view->spacing);
4060         height -= (border.top + border.bottom + 2 * view->spacing);
4061
4062         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
4063                 scale = zoom_for_size_fit_width (doc_width, doc_height, width, height, vsb_width);
4064         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
4065                 scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, vsb_width, hsb_height);
4066         else
4067                 g_assert_not_reached ();
4068
4069         ev_view_set_zoom (view, scale, FALSE);
4070 }
4071
4072 void
4073 ev_view_set_zoom_for_size (EvView *view,
4074                            int     width,
4075                            int     height,
4076                            int     vsb_width,
4077                            int     hsb_height)
4078 {
4079         g_return_if_fail (view->sizing_mode == EV_SIZING_FIT_WIDTH ||
4080                           view->sizing_mode == EV_SIZING_BEST_FIT);
4081         g_return_if_fail (width >= 0);
4082         g_return_if_fail (height >= 0);
4083
4084         if (view->document == NULL)
4085                 return;
4086
4087         if (view->presentation)
4088                 ev_view_zoom_for_size_presentation (view, width, height);
4089         else if (view->continuous && view->dual_page)
4090                 ev_view_zoom_for_size_continuous_and_dual_page (view, width, height, vsb_width, hsb_height);
4091         else if (view->continuous)
4092                 ev_view_zoom_for_size_continuous (view, width, height, vsb_width, hsb_height);
4093         else if (view->dual_page)
4094                 ev_view_zoom_for_size_dual_page (view, width, height, vsb_width, hsb_height);
4095         else
4096                 ev_view_zoom_for_size_single_page (view, width, height, vsb_width, hsb_height);
4097 }
4098
4099 /*** Status text messages ***/
4100
4101 const char *
4102 ev_view_get_status (EvView *view)
4103 {
4104         g_return_val_if_fail (EV_IS_VIEW (view), NULL);
4105
4106         return view->status;
4107 }
4108
4109 static void
4110 ev_view_set_status (EvView *view, const char *message)
4111 {
4112         g_return_if_fail (EV_IS_VIEW (view));
4113
4114         if (message != view->status) {
4115                 g_free (view->status);
4116                 view->status = g_strdup (message);
4117                 g_object_notify (G_OBJECT (view), "status");
4118         }
4119 }
4120
4121 static void
4122 update_find_status_message (EvView *view, gboolean this_page)
4123 {
4124         char *message;
4125
4126         if (this_page) {
4127                 int results;
4128
4129                 results = ev_document_find_get_n_results
4130                                 (EV_DOCUMENT_FIND (view->document),
4131                                  view->current_page);
4132                 /* TRANS: Sometimes this could be better translated as
4133                    "%d hit(s) on this page".  Therefore this string
4134                    contains plural cases. */
4135                 message = g_strdup_printf (ngettext ("%d found on this page",
4136                                                      "%d found on this page",
4137                                                      results),
4138                                            results);
4139         } else {
4140                 double percent;
4141
4142                 percent = ev_document_find_get_progress
4143                                 (EV_DOCUMENT_FIND (view->document));
4144                 message = g_strdup_printf (_("%3d%% remaining to search"),
4145                                            (int) ((1.0 - percent) * 100));
4146
4147         }
4148         ev_view_set_find_status (view, message);
4149         g_free (message);
4150 }
4151
4152 const char *
4153 ev_view_get_find_status (EvView *view)
4154 {
4155         g_return_val_if_fail (EV_IS_VIEW (view), NULL);
4156
4157         return view->find_status;
4158 }
4159
4160 static void
4161 ev_view_set_find_status (EvView *view, const char *message)
4162 {
4163         g_return_if_fail (EV_IS_VIEW (view));
4164
4165         g_free (view->find_status);
4166         view->find_status = g_strdup (message);
4167         g_object_notify (G_OBJECT (view), "find-status");
4168 }
4169
4170 /*** Find ***/
4171
4172 static void
4173 jump_to_find_result (EvView *view)
4174 {
4175         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
4176         EvRectangle rect;
4177         GdkRectangle view_rect;
4178         int n_results;
4179         int page = view->current_page;
4180
4181         n_results = ev_document_find_get_n_results (find, page);
4182
4183         if (n_results > 0  && view->find_result < n_results) {
4184                 ev_document_find_get_result
4185                         (find, page, view->find_result, &rect);
4186
4187                 doc_rect_to_view_rect (view, page, &rect, &view_rect);
4188                 ensure_rectangle_is_visible (view, &view_rect);
4189         }
4190 }
4191
4192 /**
4193  * jump_to_find_page
4194  * @view: #EvView instance
4195  * @direction: Direction to look
4196  * @shift: Shift from current page
4197  *
4198  * Jumps to the first page that has occurences of searched word.
4199  * Uses a direction where to look and a shift from current page.
4200  *
4201  */
4202 static void
4203 jump_to_find_page (EvView *view, EvViewFindDirection direction, gint shift)
4204 {
4205         int n_pages, i;
4206
4207         n_pages = ev_page_cache_get_n_pages (view->page_cache);
4208
4209         for (i = 0; i < n_pages; i++) {
4210                 int has_results;
4211                 int page;
4212
4213                 if (direction == EV_VIEW_FIND_NEXT)
4214                         page = view->current_page + i;
4215                 else
4216                         page = view->current_page - i;
4217                 page += shift;
4218
4219                 if (page >= n_pages) {
4220                         page = page - n_pages;
4221                 }
4222                 if (page < 0)
4223                         page = page + n_pages;
4224
4225                 has_results = ev_document_find_page_has_results
4226                                 (EV_DOCUMENT_FIND (view->document), page);
4227                 if (has_results == -1) {
4228                         break;
4229                 } else if (has_results == 1) {
4230                         ev_page_cache_set_current_page (view->page_cache, page);
4231                         break;
4232                 }
4233         }
4234 }
4235
4236 gboolean
4237 ev_view_can_find_next (EvView *view)
4238 {
4239         if (EV_IS_DOCUMENT_FIND (view->document)) {
4240                 EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
4241                 int i, n_pages;
4242
4243                 n_pages = ev_page_cache_get_n_pages (view->page_cache);
4244                 for (i = 0; i < n_pages; i++) {
4245                         if (ev_document_find_get_n_results (find, i) > 0) {
4246                                 return TRUE;
4247                         }
4248                 }
4249         }
4250
4251         return FALSE;
4252 }
4253
4254 void
4255 ev_view_find_next (EvView *view)
4256 {
4257         int n_results, n_pages;
4258         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
4259
4260         n_results = ev_document_find_get_n_results (find, view->current_page);
4261
4262         n_pages = ev_page_cache_get_n_pages (view->page_cache);
4263
4264         view->find_result++;
4265
4266         if (view->find_result >= n_results) {
4267
4268                 view->find_result = 0;
4269                 jump_to_find_page (view, EV_VIEW_FIND_NEXT, 1);
4270                 jump_to_find_result (view);
4271         } else {
4272                 jump_to_find_result (view);
4273                 gtk_widget_queue_draw (GTK_WIDGET (view));
4274         }
4275 }
4276
4277 gboolean
4278 ev_view_can_find_previous (EvView *view)
4279 {
4280         if (EV_IS_DOCUMENT_FIND (view->document)) {
4281                 EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
4282                 int i, n_pages;
4283
4284                 n_pages = ev_page_cache_get_n_pages (view->page_cache);
4285                 for (i = n_pages - 1; i >= 0; i--) {
4286                         if (ev_document_find_get_n_results (find, i) > 0) {
4287                                 return TRUE;
4288                         }
4289                 }
4290         }
4291
4292         return FALSE;
4293 }
4294 void
4295 ev_view_find_previous (EvView *view)
4296 {
4297         int n_results, n_pages;
4298         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
4299         EvPageCache *page_cache;
4300
4301         page_cache = ev_page_cache_get (view->document);
4302
4303         n_results = ev_document_find_get_n_results (find, view->current_page);
4304
4305         n_pages = ev_page_cache_get_n_pages (page_cache);
4306
4307         view->find_result--;
4308
4309         if (view->find_result < 0) {
4310
4311                 jump_to_find_page (view, EV_VIEW_FIND_PREV, -1);
4312                 view->find_result = ev_document_find_get_n_results (find, view->current_page) - 1;
4313                 jump_to_find_result (view);
4314         } else {
4315                 jump_to_find_result (view);
4316                 gtk_widget_queue_draw (GTK_WIDGET (view));
4317         }
4318 }
4319
4320 void ev_view_search_changed (EvView *view)
4321 {
4322         /* search string has changed, focus on new search result */
4323         view->jump_to_find_result = TRUE;
4324 }
4325
4326 /*** Selections ***/
4327
4328 /* compute_new_selection_rect/text calculates the area currently selected by
4329  * view_rect.  each handles a different mode;
4330  */
4331 static GList *
4332 compute_new_selection_rect (EvView       *view,
4333                             GdkPoint     *start,
4334                             GdkPoint     *stop)
4335 {
4336         GdkRectangle view_rect;
4337         int n_pages, i;
4338         GList *list = NULL;
4339
4340         g_assert (view->selection_mode == EV_VIEW_SELECTION_RECTANGLE);
4341
4342         view_rect.x = MIN (start->x, stop->x);
4343         view_rect.y = MIN (start->y, stop->y);
4344         view_rect.width = MAX (start->x, stop->x) - view_rect.x;
4345         view_rect.width = MAX (start->y, stop->y) - view_rect.y;
4346
4347         n_pages = ev_page_cache_get_n_pages (view->page_cache);
4348
4349         for (i = 0; i < n_pages; i++) {
4350                 GdkRectangle page_area;
4351                 GtkBorder border;
4352
4353                 if (get_page_extents (view, i, &page_area, &border)) {
4354                         GdkRectangle overlap;
4355
4356                         if (gdk_rectangle_intersect (&page_area, &view_rect, &overlap)) {
4357                                 EvViewSelection *selection;
4358
4359                                 selection = g_new0 (EvViewSelection, 1);
4360                                 selection->page = i;
4361                                 view_rect_to_doc_rect (view, &overlap, &page_area,
4362                                                        &(selection->rect));
4363
4364                                 list = g_list_append (list, selection);
4365                         }
4366                 }
4367         }
4368
4369         return list;
4370 }
4371
4372 static gboolean
4373 gdk_rectangle_point_in (GdkRectangle *rectangle,
4374                         GdkPoint     *point)
4375 {
4376         return rectangle->x <= point->x &&
4377                 rectangle->y <= point->y &&
4378                 point->x < rectangle->x + rectangle->width &&
4379                 point->y < rectangle->y + rectangle->height;
4380 }
4381
4382 static GList *
4383 compute_new_selection_text (EvView   *view,
4384                             GdkPoint *start,
4385                             GdkPoint *stop)
4386 {
4387         int n_pages, i, first, last;
4388         GList *list = NULL;
4389         EvViewSelection *selection;
4390         gint width, height;
4391         int start_page, end_page;
4392
4393         g_assert (view->selection_mode == EV_VIEW_SELECTION_TEXT);
4394
4395         n_pages = ev_page_cache_get_n_pages (view->page_cache);
4396
4397         /* First figure out the range of pages the selection
4398          * affects. */
4399         first = n_pages;
4400         last = 0;
4401         if (view->continuous) {
4402                 start_page = 0;
4403                 end_page = n_pages;
4404         } else if (view->dual_page) {
4405                 start_page = view->start_page;
4406                 end_page = view->end_page + 1;
4407         } else {
4408                 start_page = view->current_page;
4409                 end_page = view->current_page + 1;
4410         }
4411
4412         for (i = start_page; i < end_page; i++) {
4413                 GdkRectangle page_area;
4414                 GtkBorder border;
4415
4416                 get_page_extents (view, i, &page_area, &border);
4417                 if (gdk_rectangle_point_in (&page_area, start) ||
4418                     gdk_rectangle_point_in (&page_area, stop)) {
4419                         if (first == n_pages)
4420                                 first = i;
4421                         last = i;
4422                 }
4423
4424         }
4425
4426
4427
4428         /* Now create a list of EvViewSelection's for the affected
4429          * pages.  This could be an empty list, a list of just one
4430          * page or a number of pages.*/
4431         for (i = first; i < last + 1; i++) {
4432                 GdkRectangle page_area;
4433                 GtkBorder border;
4434                 GdkPoint *point;
4435
4436                 ev_page_cache_get_size (view->page_cache, i,
4437                                         view->rotation,
4438                                         1.0, &width, &height);
4439
4440                 selection = g_new0 (EvViewSelection, 1);
4441                 selection->page = i;
4442                 selection->rect.x1 = selection->rect.y1 = 0;
4443                 selection->rect.x2 = width;
4444                 selection->rect.y2 = height;
4445
4446                 get_page_extents (view, i, &page_area, &border);
4447
4448                 if (gdk_rectangle_point_in (&page_area, start))
4449                         point = start;
4450                 else
4451                         point = stop;
4452
4453                 if (i == first)
4454                         view_point_to_doc_point (view, point, &page_area,
4455                                                  &selection->rect.x1,
4456                                                  &selection->rect.y1);
4457
4458                 /* If the selection is contained within just one page,
4459                  * make sure we don't write 'start' into both points
4460                  * in selection->rect. */
4461                 if (first == last)
4462                         point = stop;
4463
4464                 if (i == last)
4465                         view_point_to_doc_point (view, point, &page_area,
4466                                                  &selection->rect.x2,
4467                                                  &selection->rect.y2);
4468
4469                 list = g_list_append (list, selection);
4470         }
4471
4472         return list;
4473 }
4474
4475 /* This function takes the newly calculated list, and figures out which regions
4476  * have changed.  It then queues a redraw approporiately.
4477  */
4478 static void
4479 merge_selection_region (EvView *view,
4480                         GList  *new_list)
4481 {
4482         GList *old_list;
4483         GList *new_list_ptr, *old_list_ptr;
4484
4485         /* Update the selection */
4486         old_list = ev_pixbuf_cache_get_selection_list (view->pixbuf_cache);
4487         g_list_foreach (view->selection_info.selections, (GFunc)selection_free, NULL);
4488         view->selection_info.selections = new_list;
4489         ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, new_list);
4490         g_object_notify (G_OBJECT (view), "has-selection");
4491
4492         new_list_ptr = new_list;
4493         old_list_ptr = old_list;
4494
4495         while (new_list_ptr || old_list_ptr) {
4496                 EvViewSelection *old_sel, *new_sel;
4497                 int cur_page;
4498                 GdkRegion *region = NULL;
4499
4500                 new_sel = (new_list_ptr) ? (new_list_ptr->data) : NULL;
4501                 old_sel = (old_list_ptr) ? (old_list_ptr->data) : NULL;
4502
4503                 /* Assume that the lists are in order, and we run through them
4504                  * comparing them, one page at a time.  We come out with the
4505                  * first page we see. */
4506                 if (new_sel && old_sel) {
4507                         if (new_sel->page < old_sel->page) {
4508                                 new_list_ptr = new_list_ptr->next;
4509                                 old_sel = NULL;
4510                         } else if (new_sel->page > old_sel->page) {
4511                                 old_list_ptr = old_list_ptr->next;
4512                                 new_sel = NULL;
4513                         } else {
4514                                 new_list_ptr = new_list_ptr->next;
4515                                 old_list_ptr = old_list_ptr->next;
4516                         }
4517                 } else if (new_sel) {
4518                         new_list_ptr = new_list_ptr->next;
4519                 } else if (old_sel) {
4520                         old_list_ptr = old_list_ptr->next;
4521                 }
4522
4523                 g_assert (new_sel || old_sel);
4524
4525                 /* is the page we're looking at on the screen?*/
4526                 cur_page = new_sel ? new_sel->page : old_sel->page;
4527                 if (cur_page < view->start_page || cur_page > view->end_page)
4528                         continue;
4529
4530                 /* seed the cache with a new page.  We are going to need the new
4531                  * region too. */
4532                 if (new_sel) {
4533                         GdkRegion *tmp_region = NULL;
4534                         ev_pixbuf_cache_get_selection_pixbuf (view->pixbuf_cache,
4535                                                               cur_page,
4536                                                               view->scale,
4537                                                               &tmp_region);
4538                         if (tmp_region) {
4539                                 new_sel->covered_region = gdk_region_copy (tmp_region);
4540                         }
4541                 }
4542
4543                 /* Now we figure out what needs redrawing */
4544                 if (old_sel && new_sel) {
4545                         if (old_sel->covered_region &&
4546                             new_sel->covered_region) {
4547                                 /* We only want to redraw the areas that have
4548                                  * changed, so we xor the old and new regions
4549                                  * and redraw if it's different */
4550                                 region = gdk_region_copy (old_sel->covered_region);
4551                                 gdk_region_xor (region, new_sel->covered_region);
4552                                 if (gdk_region_empty (region)) {
4553                                         gdk_region_destroy (region);
4554                                         region = NULL;
4555                                 }
4556                         } else if (old_sel->covered_region) {
4557                                 region = gdk_region_copy (old_sel->covered_region);
4558                         } else if (new_sel->covered_region) {
4559                                 region = gdk_region_copy (new_sel->covered_region);
4560                         }
4561                 } else if (old_sel && !new_sel) {
4562                         if (old_sel->covered_region && !gdk_region_empty (old_sel->covered_region)) {
4563                                 region = gdk_region_copy (old_sel->covered_region);
4564                         }
4565                 } else if (!old_sel && new_sel) {
4566                         if (new_sel->covered_region && !gdk_region_empty (new_sel->covered_region)) {
4567                                 region = gdk_region_copy (new_sel->covered_region);
4568                         }
4569                 } else {
4570                         g_assert_not_reached ();
4571                 }
4572
4573                 /* Redraw the damaged region! */
4574                 if (region) {
4575                         GdkRectangle page_area;
4576                         GtkBorder border;
4577
4578                         get_page_extents (view, cur_page, &page_area, &border);
4579                         gdk_region_offset (region,
4580                                            page_area.x + border.left - view->scroll_x,
4581                                            page_area.y + border.top - view->scroll_y);
4582                         gdk_window_invalidate_region (GTK_WIDGET (view)->window, region, TRUE);
4583                         gdk_region_destroy (region);
4584                 }
4585         }
4586
4587         /* Free the old list, now that we're done with it. */
4588         g_list_foreach (old_list, (GFunc) selection_free, NULL);
4589 }
4590
4591 static void
4592 compute_selections (EvView   *view,
4593                     GdkPoint *start,
4594                     GdkPoint *stop)
4595 {
4596         GList *list;
4597
4598         if (view->selection_mode == EV_VIEW_SELECTION_RECTANGLE)
4599                 list = compute_new_selection_rect (view, start, stop);
4600         else
4601                 list = compute_new_selection_text (view, start, stop);
4602         merge_selection_region (view, list);
4603 }
4604
4605 /* Free's the selection.  It's up to the caller to queue redraws if needed.
4606  */
4607 static void
4608 selection_free (EvViewSelection *selection)
4609 {
4610         if (selection->covered_region)
4611                 gdk_region_destroy (selection->covered_region);
4612         g_free (selection);
4613 }
4614
4615 static void
4616 clear_selection (EvView *view)
4617 {
4618         g_list_foreach (view->selection_info.selections, (GFunc)selection_free, NULL);
4619         view->selection_info.selections = NULL;
4620         view->selection_info.in_selection = FALSE;
4621         if (view->pixbuf_cache)
4622                 ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, NULL);
4623         g_object_notify (G_OBJECT (view), "has-selection");
4624 }
4625
4626
4627 void
4628 ev_view_select_all (EvView *view)
4629 {
4630         int n_pages, i;
4631
4632         /* Disable selection on rotated pages for the 0.4.0 series */
4633         if (view->rotation != 0)
4634                 return;
4635
4636         clear_selection (view);
4637
4638         n_pages = ev_page_cache_get_n_pages (view->page_cache);
4639         for (i = 0; i < n_pages; i++) {
4640                 int width, height;
4641                 EvViewSelection *selection;
4642
4643                 ev_page_cache_get_size (view->page_cache,
4644                                         i,
4645                                         view->rotation,
4646                                         1.0, &width, &height);
4647
4648                 selection = g_new0 (EvViewSelection, 1);
4649                 selection->page = i;
4650                 selection->rect.x1 = selection->rect.y1 = 0;
4651                 selection->rect.x2 = width;
4652                 selection->rect.y2 = height;
4653
4654                 view->selection_info.selections = g_list_append (view->selection_info.selections, selection);
4655         }
4656
4657         ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, view->selection_info.selections);
4658         g_object_notify (G_OBJECT (view), "has-selection");
4659         gtk_widget_queue_draw (GTK_WIDGET (view));
4660 }
4661
4662 gboolean
4663 ev_view_get_has_selection (EvView *view)
4664 {
4665         return view->selection_info.selections != NULL;
4666 }
4667
4668 static char *
4669 get_selected_text (EvView *ev_view)
4670 {
4671         GString *text;
4672         GList *l;
4673         gchar *normalized_text;
4674
4675         text = g_string_new (NULL);
4676
4677         ev_document_doc_mutex_lock ();
4678
4679         for (l = ev_view->selection_info.selections; l != NULL; l = l->next) {
4680                 EvViewSelection *selection = (EvViewSelection *)l->data;
4681                 char *tmp;
4682
4683                 tmp = ev_document_get_text (ev_view->document,
4684                                             selection->page,
4685                                             &selection->rect);
4686                 g_string_append (text, tmp);
4687                 g_free (tmp);
4688         }
4689
4690         ev_document_doc_mutex_unlock ();
4691
4692         normalized_text = g_utf8_normalize (text->str, text->len, G_NORMALIZE_NFKC);
4693         g_string_free (text, TRUE);
4694         return normalized_text;
4695 }
4696
4697 void
4698 ev_view_copy (EvView *ev_view)
4699 {
4700         GtkClipboard *clipboard;
4701         char *text;
4702
4703         if (!ev_document_can_get_text (ev_view->document)) {
4704                 return;
4705         }
4706
4707         text = get_selected_text (ev_view);
4708         clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view),
4709                                               GDK_SELECTION_CLIPBOARD);
4710         gtk_clipboard_set_text (clipboard, text, -1);
4711         g_free (text);
4712 }
4713
4714 static void
4715 ev_view_primary_get_cb (GtkClipboard     *clipboard,
4716                         GtkSelectionData *selection_data,
4717                         guint             info,
4718                         gpointer          data)
4719 {
4720         EvView *ev_view = EV_VIEW (data);
4721         char *text;
4722
4723         if (!ev_document_can_get_text (ev_view->document)) {
4724                 return;
4725         }
4726
4727         text = get_selected_text (ev_view);
4728         gtk_selection_data_set_text (selection_data, text, -1);
4729         g_free (text);
4730 }
4731
4732 static void
4733 ev_view_primary_clear_cb (GtkClipboard *clipboard,
4734                           gpointer      data)
4735 {
4736         EvView *view = EV_VIEW (data);
4737
4738         clear_selection (view);
4739 }
4740
4741 static void
4742 ev_view_update_primary_selection (EvView *ev_view)
4743 {
4744         GtkClipboard *clipboard;
4745
4746         clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view),
4747                                               GDK_SELECTION_PRIMARY);
4748
4749         if (ev_view->selection_info.selections) {
4750                 if (!gtk_clipboard_set_with_owner (clipboard,
4751                                                    clipboard_targets,
4752                                                    G_N_ELEMENTS (clipboard_targets),
4753                                                    ev_view_primary_get_cb,
4754                                                    ev_view_primary_clear_cb,
4755                                                    G_OBJECT (ev_view)))
4756                         ev_view_primary_clear_cb (clipboard, ev_view);
4757         } else {
4758                 if (gtk_clipboard_get_owner (clipboard) == G_OBJECT (ev_view))
4759                         gtk_clipboard_clear (clipboard);
4760         }
4761 }
4762
4763 /*** Cursor operations ***/
4764
4765 static GdkCursor *
4766 ev_view_create_invisible_cursor(void)
4767 {
4768        GdkBitmap *empty;
4769        GdkColor black = { 0, 0, 0, 0 };
4770        static char bits[] = { 0x00 };
4771
4772        empty = gdk_bitmap_create_from_data (NULL, bits, 1, 1);
4773
4774        return gdk_cursor_new_from_pixmap (empty, empty, &black, &black, 0, 0);
4775 }
4776
4777 static void
4778 ev_view_set_cursor (EvView *view, EvViewCursor new_cursor)
4779 {
4780         GdkCursor *cursor = NULL;
4781         GdkDisplay *display;
4782         GtkWidget *widget;
4783
4784         if (view->cursor == new_cursor) {
4785                 return;
4786         }
4787
4788         widget = gtk_widget_get_toplevel (GTK_WIDGET (view));
4789         display = gtk_widget_get_display (widget);
4790         view->cursor = new_cursor;
4791
4792         switch (new_cursor) {
4793                 case EV_VIEW_CURSOR_NORMAL:
4794                         gdk_window_set_cursor (widget->window, NULL);
4795                         break;
4796                 case EV_VIEW_CURSOR_IBEAM:
4797                         cursor = gdk_cursor_new_for_display (display, GDK_XTERM);
4798                         break;
4799                 case EV_VIEW_CURSOR_LINK:
4800                         cursor = gdk_cursor_new_for_display (display, GDK_HAND2);
4801                         break;
4802                 case EV_VIEW_CURSOR_WAIT:
4803                         cursor = gdk_cursor_new_for_display (display, GDK_WATCH);
4804                         break;
4805                 case EV_VIEW_CURSOR_HIDDEN:
4806                         cursor = ev_view_create_invisible_cursor ();
4807                         break;
4808                 case EV_VIEW_CURSOR_DRAG:
4809                         cursor = gdk_cursor_new_for_display (display, GDK_FLEUR);
4810                         break;
4811         }
4812
4813         if (cursor) {
4814                 gdk_window_set_cursor (widget->window, cursor);
4815                 gdk_cursor_unref (cursor);
4816                 gdk_flush();
4817         }
4818 }
4819
4820 void
4821 ev_view_hide_cursor (EvView *view)
4822 {
4823        ev_view_set_cursor (view, EV_VIEW_CURSOR_HIDDEN);
4824 }
4825
4826 void
4827 ev_view_show_cursor (EvView *view)
4828 {
4829        ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
4830 }
4831
4832 static void
4833 ev_view_reset_presentation_state (EvView *view)
4834 {
4835         if (!view->presentation ||
4836             view->presentation_state == EV_PRESENTATION_NORMAL)
4837                 return;
4838
4839         view->presentation_state = EV_PRESENTATION_NORMAL;
4840         gdk_window_set_background (GTK_WIDGET (view)->window,
4841                                    &GTK_WIDGET (view)->style->black);
4842         gtk_widget_queue_draw (GTK_WIDGET (view));
4843 }
4844
4845 gboolean
4846 ev_view_next_page (EvView *view)
4847 {
4848         int page, n_pages;
4849
4850         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
4851
4852         if (!view->page_cache)
4853                 return FALSE;
4854
4855         ev_view_presentation_transition_stop (view);
4856         ev_view_reset_presentation_state (view);
4857
4858         page = ev_page_cache_get_current_page (view->page_cache);
4859         n_pages = ev_page_cache_get_n_pages (view->page_cache);
4860
4861         if (view->dual_page && !view->presentation)
4862                 page = page + 2;
4863         else
4864                 page = page + 1;
4865
4866         if (page < n_pages) {
4867                 ev_page_cache_set_current_page (view->page_cache, page);
4868                 return TRUE;
4869         } else if (view->presentation && page == n_pages) {
4870                 view->presentation_state = EV_PRESENTATION_END;
4871                 gtk_widget_queue_draw (GTK_WIDGET (view));
4872                 return TRUE;
4873         } else if (view->dual_page && page == n_pages) {
4874                 ev_page_cache_set_current_page (view->page_cache, page - 1);
4875                 return TRUE;
4876         } else {
4877                 return FALSE;
4878         }
4879 }
4880
4881 gboolean
4882 ev_view_previous_page (EvView *view)
4883 {
4884         int page;
4885
4886         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
4887
4888         if (!view->page_cache)
4889                 return FALSE;
4890
4891         if (view->presentation &&
4892             view->presentation_state == EV_PRESENTATION_END) {
4893                 ev_view_reset_presentation_state (view);
4894                 return TRUE;
4895         }
4896
4897         ev_view_reset_presentation_state (view);
4898
4899         page = ev_page_cache_get_current_page (view->page_cache);
4900
4901         if (view->dual_page && !view->presentation)
4902                 page = page - 2;
4903         else
4904                 page = page - 1;
4905
4906         if (page >= 0) {
4907                 ev_page_cache_set_current_page (view->page_cache, page);
4908                 return TRUE;
4909         } else if (ev_view_get_dual_page (view) && page == -1) {
4910                 ev_page_cache_set_current_page (view->page_cache, 0);
4911                 return TRUE;
4912         } else {
4913                 return FALSE;
4914         }
4915 }
4916
4917 /*** Enum description for usage in signal ***/
4918
4919 GType
4920 ev_sizing_mode_get_type (void)
4921 {
4922   static GType etype = 0;
4923   if (etype == 0) {
4924     static const GEnumValue values[] = {
4925       { EV_SIZING_FIT_WIDTH, "EV_SIZING_FIT_WIDTH", "fit-width" },
4926       { EV_SIZING_BEST_FIT, "EV_SIZING_BEST_FIT", "best-fit" },
4927       { EV_SIZING_FREE, "EV_SIZING_FREE", "free" },
4928       { 0, NULL, NULL }
4929     };
4930     etype = g_enum_register_static ("EvSizingMode", values);
4931   }
4932   return etype;
4933 }
4934
4935 GType
4936 ev_scroll_type_get_type (void)
4937 {
4938   static GType etype = 0;
4939   if (etype == 0) {
4940     static const GEnumValue values[] = {
4941       { EV_SCROLL_PAGE_FORWARD, "EV_SCROLL_PAGE_FORWARD", "scroll-page-forward" },
4942       { EV_SCROLL_PAGE_BACKWARD, "EV_SCROLL_PAGE_BACKWARD", "scroll-page-backward" },
4943       { EV_SCROLL_STEP_FORWARD, "EV_SCROLL_STEP_FORWARD", "scroll-step-forward" },
4944       { EV_SCROLL_STEP_FORWARD, "EV_SCROLL_STEP_FORWARD", "scroll-step-forward" },
4945       { EV_SCROLL_STEP_UP, "EV_SCROLL_STEP_UP", "scroll-step-up" },
4946       { EV_SCROLL_STEP_DOWN, "EV_SCROLL_STEP_DOWN", "scroll-step-down" },
4947       { 0, NULL, NULL }
4948     };
4949     etype = g_enum_register_static ("EvScrollType", values);
4950   }
4951   return etype;
4952 }