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 <config.h>
  22 #include <stdlib.h>
  23 #include <math.h>
  24 #include <string.h>
  25 #include <gtk/gtkalignment.h>
  26 #include <glib/gi18n.h>
  27 #include <gtk/gtkbindings.h>
  28 #include <gtk/gtkselection.h>
  29 #include <gtk/gtkclipboard.h>
  30 #include <gdk/gdkkeysyms.h>
  31
  32 #include "ev-marshal.h"
  33 #include "ev-view.h"
  34 #include "ev-view-private.h"
  35 #include "ev-utils.h"
  36 #include "ev-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-forms.h"
  41 #include "ev-document-misc.h"
  42 #include "ev-job-queue.h"
  43 #include "ev-page-cache.h"
  44 #include "ev-pixbuf-cache.h"
  45 #include "ev-transition-animation.h"
  46 #if !GTK_CHECK_VERSION (2, 11, 7)
  47 #include "ev-tooltip.h"
  48 #endif
  49 #include "ev-application.h"
  50
  51 #define EV_VIEW_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass), EV_TYPE_VIEW, EvViewClass))
  52 #define EV_IS_VIEW_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), EV_TYPE_VIEW))
  53 #define EV_VIEW_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj), EV_TYPE_VIEW, EvViewClass))
  54
  55
  56 enum {
  57         PROP_0,
  58         PROP_FIND_STATUS,
  59         PROP_CONTINUOUS,
  60         PROP_DUAL_PAGE,
  61         PROP_FULLSCREEN,
  62         PROP_PRESENTATION,
  63         PROP_SIZING_MODE,
  64         PROP_ZOOM,
  65         PROP_ROTATION,
  66         PROP_HAS_SELECTION,
  67 };
  68
  69 enum {
  70         SIGNAL_BINDING_ACTIVATED,
  71         SIGNAL_ZOOM_INVALID,
  72         SIGNAL_HANDLE_LINK,
  73         SIGNAL_EXTERNAL_LINK,
  74         SIGNAL_POPUP_MENU,
  75         N_SIGNALS,
  76 };
  77
  78 enum {
  79         TARGET_DND_URI,
  80         TARGET_DND_TEXT,
  81         TARGET_DND_IMAGE
  82 };
  83
  84 enum {
  85         TARGET_STRING,
  86         TARGET_TEXT,
  87         TARGET_COMPOUND_TEXT,
  88         TARGET_UTF8_STRING,
  89         TARGET_TEXT_BUFFER_CONTENTS
  90 };
  91
  92 static const GtkTargetEntry clipboard_targets[] = {
  93         { "STRING", 0, TARGET_STRING },
  94         { "TEXT",   0, TARGET_TEXT },
  95         { "COMPOUND_TEXT", 0, TARGET_COMPOUND_TEXT },
  96         { "UTF8_STRING", 0, TARGET_UTF8_STRING },
  97 };
  98
  99 static const GtkTargetEntry view_drop_targets[] = {
 100         { "text/uri-list", 0, 0 }
 101 };
 102
 103 static guint signals[N_SIGNALS];
 104
 105 typedef enum {
 106         EV_VIEW_FIND_NEXT,
 107         EV_VIEW_FIND_PREV
 108 } EvViewFindDirection;
 109
 110 #define ZOOM_IN_FACTOR  1.2
 111 #define ZOOM_OUT_FACTOR (1.0/ZOOM_IN_FACTOR)
 112
 113 #define MIN_SCALE 0.05409
 114 #define MAX_SCALE 4.0
 115
 116 #define SCROLL_TIME 150
 117
 118 /*** Scrolling ***/
 119 static void       scroll_to_current_page                     (EvView *view,
 120                                                               GtkOrientation orientation);
 121 static void       ev_view_set_scroll_adjustments             (GtkLayout          *layout,
 122                                                               GtkAdjustment      *hadjustment,
 123                                                               GtkAdjustment      *vadjustment);
 124 static void       view_update_range_and_current_page         (EvView             *view);
 125 static void       set_scroll_adjustment                      (EvView             *view,
 126                                                               GtkOrientation      orientation,
 127                                                               GtkAdjustment      *adjustment);
 128 static void       add_scroll_binding_keypad                  (GtkBindingSet      *binding_set,
 129                                                               guint               keyval,
 130                                                               GdkModifierType modifiers,
 131                                                               EvScrollType       scroll,
 132                                                               gboolean            horizontal);
 133 static void       ensure_rectangle_is_visible                (EvView             *view,
 134                                                               GdkRectangle       *rect);
 135
 136 /*** Geometry computations ***/
 137 static void       compute_border                             (EvView             *view,
 138                                                               int                 width,
 139                                                               int                 height,
 140                                                               GtkBorder          *border);
 141 static void       get_page_y_offset                          (EvView *view,
 142                                                               int page,
 143                                                               double zoom,
 144                                                               int *y_offset);
 145 static gboolean   get_page_extents                           (EvView             *view,
 146                                                               gint                page,
 147                                                               GdkRectangle       *page_area,
 148                                                               GtkBorder          *border);
 149 static void       view_rect_to_doc_rect                      (EvView             *view,
 150                                                               GdkRectangle       *view_rect,
 151                                                               GdkRectangle       *page_area,
 152                                                               EvRectangle        *doc_rect);
 153 static void       doc_rect_to_view_rect                      (EvView             *view,
 154                                                               int                 page,
 155                                                               EvRectangle        *doc_rect,
 156                                                               GdkRectangle       *view_rect);
 157 static void       find_page_at_location                      (EvView             *view,
 158                                                               gdouble             x,
 159                                                               gdouble             y,
 160                                                               gint               *page,
 161                                                               gint               *x_offset,
 162                                                               gint               *y_offset);
 163 static gboolean  doc_point_to_view_point                     (EvView             *view,
 164                                                               int                 page,
 165                                                               EvPoint            *doc_point,
 166                                                               GdkPoint           *view_point);
 167 /*** Hyperrefs ***/
 168 static EvLink *   ev_view_get_link_at_location               (EvView             *view,
 169                                                               gdouble             x,
 170                                                               gdouble             y);
 171 static char*      tip_from_link                              (EvView             *view,
 172                                                               EvLink             *link);
 173 /*** Forms ***/
 174 static EvFormField *ev_view_get_form_field_at_location       (EvView             *view,
 175                                                                gdouble            x,
 176                                                                gdouble            y);
 177
 178 /*** GtkWidget implementation ***/
 179 static void       ev_view_size_request_continuous_dual_page  (EvView             *view,
 180                                                               GtkRequisition     *requisition);
 181 static void       ev_view_size_request_continuous            (EvView             *view,
 182                                                               GtkRequisition     *requisition);
 183 static void       ev_view_size_request_dual_page             (EvView             *view,
 184                                                               GtkRequisition     *requisition);
 185 static void       ev_view_size_request_single_page           (EvView             *view,
 186                                                               GtkRequisition     *requisition);
 187 static void       ev_view_size_request                       (GtkWidget          *widget,
 188                                                               GtkRequisition     *requisition);
 189 static void       ev_view_size_allocate                      (GtkWidget          *widget,
 190                                                               GtkAllocation      *allocation);
 191 static void       ev_view_realize                            (GtkWidget          *widget);
 192 static gboolean   ev_view_scroll_event                       (GtkWidget          *widget,
 193                                                               GdkEventScroll     *event);
 194 static gboolean   ev_view_expose_event                       (GtkWidget          *widget,
 195                                                               GdkEventExpose     *event);
 196 static gboolean   ev_view_popup_menu                         (GtkWidget          *widget);
 197 static gboolean   ev_view_button_press_event                 (GtkWidget          *widget,
 198                                                               GdkEventButton     *event);
 199 static gboolean   ev_view_motion_notify_event                (GtkWidget          *widget,
 200                                                               GdkEventMotion     *event);
 201 static gboolean   ev_view_button_release_event               (GtkWidget          *widget,
 202                                                               GdkEventButton     *event);
 203 static gboolean   ev_view_enter_notify_event                 (GtkWidget          *widget,
 204                                                               GdkEventCrossing   *event);
 205 static gboolean   ev_view_leave_notify_event                 (GtkWidget          *widget,
 206                                                               GdkEventCrossing   *event);
 207 static void       ev_view_style_set                          (GtkWidget          *widget,
 208                                                               GtkStyle           *old_style);
 209 static void       ev_view_remove_all                         (EvView             *view);
 210
 211 static AtkObject *ev_view_get_accessible                     (GtkWidget *widget);
 212
 213 /*** Drawing ***/
 214 static guint32    ev_gdk_color_to_rgb                        (const GdkColor     *color);
 215 static void       draw_rubberband                            (GtkWidget          *widget,
 216                                                               GdkWindow          *window,
 217                                                               const GdkRectangle *rect,
 218                                                               guchar              alpha);
 219 static void       highlight_find_results                     (EvView             *view,
 220                                                               int                 page);
 221 static void       draw_one_page                              (EvView             *view,
 222                                                               gint                page,
 223                                                               cairo_t            *cr,
 224                                                               GdkRectangle       *page_area,
 225                                                               GtkBorder          *border,
 226                                                               GdkRectangle       *expose_area,
 227                                                               gboolean           *page_ready);
 228 static void       draw_loading_text                          (EvView             *view,
 229                                                               GdkRectangle       *page_area,
 230                                                               GdkRectangle       *expose_area);
 231
 232 /*** Callbacks ***/
 233 static void       find_changed_cb                            (EvDocument         *document,
 234                                                               int                 page,
 235                                                               EvView             *view);
 236 static void       job_finished_cb                            (EvPixbufCache      *pixbuf_cache,
 237                                                               GdkRegion          *region,
 238                                                               EvView             *view);
 239 static void       page_changed_cb                            (EvPageCache        *page_cache,
 240                                                               int                 new_page,
 241                                                               EvView             *view);
 242 static void       on_adjustment_value_changed                (GtkAdjustment      *adjustment,
 243                                                               EvView             *view);
 244
 245 /*** GObject ***/
 246 static void       ev_view_finalize                           (GObject            *object);
 247 static void       ev_view_destroy                            (GtkObject          *object);
 248 static void       ev_view_set_property                       (GObject            *object,
 249                                                               guint               prop_id,
 250                                                               const GValue       *value,
 251                                                               GParamSpec         *pspec);
 252 static void       ev_view_get_property                       (GObject            *object,
 253                                                               guint               prop_id,
 254                                                               GValue             *value,
 255                                                               GParamSpec         *pspec);
 256 static void       ev_view_class_init                         (EvViewClass        *class);
 257 static void       ev_view_init                               (EvView             *view);
 258
 259 /*** Zoom and sizing ***/
 260 static double   zoom_for_size_fit_width                      (int doc_width,
 261                                                               int doc_height,
 262                                                               int target_width,
 263                                                               int target_height,
 264                                                               int vsb_width);
 265 static double   zoom_for_size_fit_height                     (int doc_width,
 266                                                               int doc_height,
 267                                                               int target_width,
 268                                                               int target_height,
 269                                                               int vsb_height);
 270 static double   zoom_for_size_best_fit                       (int doc_width,
 271                                                               int doc_height,
 272                                                               int target_width,
 273                                                               int target_height,
 274                                                               int vsb_width,
 275                                                               int hsb_width);
 276 static void     ev_view_zoom_for_size_presentation           (EvView *view,
 277                                                               int     width,
 278                                                               int     height);
 279 static void     ev_view_zoom_for_size_continuous_and_dual_page (EvView *view,
 280                                                                 int     width,
 281                                                                 int     height,
 282                                                                 int     vsb_width,
 283                                                                 int     hsb_height);
 284 static void     ev_view_zoom_for_size_continuous               (EvView *view,
 285                                                                 int     width,
 286                                                                 int     height,
 287                                                                 int     vsb_width,
 288                                                                 int     hsb_height);
 289 static void     ev_view_zoom_for_size_dual_page                (EvView *view,
 290                                                                 int     width,
 291                                                                 int     height,
 292                                                                 int     vsb_width,
 293                                                                 int     hsb_height);
 294 static void     ev_view_zoom_for_size_single_page              (EvView *view,
 295                                                                 int     width,
 296                                                                 int     height,
 297                                                                 int     vsb_width,
 298                                                                 int     hsb_height);
 299 /*** Cursors ***/
 300 static GdkCursor* ev_view_create_invisible_cursor            (void);
 301 static void       ev_view_set_cursor                         (EvView             *view,
 302                                                               EvViewCursor        new_cursor);
 303 static void       ev_view_handle_cursor_over_xy              (EvView *view,
 304                                                               gint x,
 305                                                               gint y);
 306
 307 /*** Find ***/
 308 static void       update_find_status_message                 (EvView             *view,
 309                                                               gboolean            this_page);
 310 static void       ev_view_set_find_status                    (EvView             *view,
 311                                                               const char         *message);
 312 static void       jump_to_find_result                        (EvView             *view);
 313 static void       jump_to_find_page                          (EvView             *view,
 314                                                               EvViewFindDirection direction,
 315                                                               gint                shift);
 316
 317 /*** Selection ***/
 318 static void       compute_selections                         (EvView             *view,
 319                                                               EvSelectionStyle    style,
 320                                                               GdkPoint           *start,
 321                                                               GdkPoint           *stop);
 322 static void       clear_selection                            (EvView             *view);
 323 static void       selection_free                             (EvViewSelection    *selection);
 324 static char*      get_selected_text                          (EvView             *ev_view);
 325 static void       ev_view_primary_get_cb                     (GtkClipboard       *clipboard,
 326                                                               GtkSelectionData   *selection_data,
 327                                                               guint               info,
 328                                                               gpointer            data);
 329 static void       ev_view_primary_clear_cb                   (GtkClipboard       *clipboard,
 330                                                               gpointer            data);
 331 static void       ev_view_update_primary_selection           (EvView             *ev_view);
 332
 333 /*** Presentation ***/
 334 static void       ev_view_presentation_transition_start      (EvView             *ev_view);
 335 static void       ev_view_presentation_transition_stop       (EvView             *ev_view);
 336
 337
 338 G_DEFINE_TYPE (EvView, ev_view, GTK_TYPE_LAYOUT)
 339
 340 static void
 341 scroll_to_current_page (EvView *view, GtkOrientation orientation)
 342 {
 343         GdkPoint view_point;
 344
 345         if (view->document == NULL) {
 346                 return;
 347         }
 348
 349         doc_point_to_view_point (view, view->current_page, &view->pending_point, &view_point);
 350
 351         if (orientation == GTK_ORIENTATION_VERTICAL) {
 352                 view->pending_point.y = 0;
 353         } else {
 354                 view->pending_point.x = 0;
 355         }
 356
 357         if (orientation == GTK_ORIENTATION_VERTICAL) {
 358                 if (view->continuous) {
 359                         gtk_adjustment_clamp_page (view->vadjustment,
 360                                                    view_point.y - view->spacing / 2,
 361                                                    view_point.y + view->vadjustment->page_size);
 362                 } else {
 363                         gtk_adjustment_set_value (view->vadjustment,
 364                                                   CLAMP (view_point.y,
 365                                                   view->vadjustment->lower,
 366                                                   view->vadjustment->upper -
 367                                                   view->vadjustment->page_size));
 368                 }
 369         } else {
 370                 if (view->dual_page) {
 371                         gtk_adjustment_clamp_page (view->hadjustment,
 372                                                    view_point.x,
 373                                                    view_point.x + view->hadjustment->page_size);
 374                 } else {
 375                         gtk_adjustment_set_value (view->hadjustment,
 376                                                   CLAMP (view_point.x,
 377                                                   view->hadjustment->lower,
 378                                                   view->hadjustment->upper -
 379                                                   view->hadjustment->page_size));
 380                 }
 381         }
 382 }
 383
 384 static void
 385 view_set_adjustment_values (EvView         *view,
 386                             GtkOrientation  orientation)
 387 {
 388         GtkWidget *widget = GTK_WIDGET (view);
 389         GtkAdjustment *adjustment;
 390         int requisition;
 391         int allocation;
 392
 393         double factor;
 394         gint new_value;
 395
 396         if (orientation == GTK_ORIENTATION_HORIZONTAL)  {
 397                 requisition = widget->requisition.width;
 398                 allocation = widget->allocation.width;
 399                 adjustment = view->hadjustment;
 400         } else {
 401                 requisition = widget->requisition.height;
 402                 allocation = widget->allocation.height;
 403                 adjustment = view->vadjustment;
 404         }
 405
 406         if (!adjustment)
 407                 return;
 408
 409         factor = 1.0;
 410         switch (view->pending_scroll) {
 411                 case SCROLL_TO_KEEP_POSITION:
 412                 case SCROLL_TO_FIND_LOCATION:
 413                         factor = (adjustment->value) / adjustment->upper;
 414                         break;
 415                 case SCROLL_TO_PAGE_POSITION:
 416                         break;
 417                 case SCROLL_TO_CENTER:
 418                         factor = (adjustment->value + adjustment->page_size * 0.5) / adjustment->upper;
 419                         break;
 420         }
 421
 422         adjustment->page_size = allocation;
 423         adjustment->step_increment = allocation * 0.1;
 424         adjustment->page_increment = allocation * 0.9;
 425         adjustment->lower = 0;
 426         adjustment->upper = MAX (allocation, requisition);
 427
 428         /*
 429          * We add 0.5 to the values before to average out our rounding errors.
 430          */
 431         switch (view->pending_scroll) {
 432                 case SCROLL_TO_KEEP_POSITION:
 433                 case SCROLL_TO_FIND_LOCATION:
 434                         new_value = CLAMP (adjustment->upper * factor + 0.5, 0, adjustment->upper - adjustment->page_size);
 435                         gtk_adjustment_set_value (adjustment, (int)new_value);
 436                         break;
 437                 case SCROLL_TO_PAGE_POSITION:
 438                         scroll_to_current_page (view, orientation);
 439                         break;
 440                 case SCROLL_TO_CENTER:
 441                         new_value = CLAMP (adjustment->upper * factor - adjustment->page_size * 0.5 + 0.5,
 442                                            0, adjustment->upper - adjustment->page_size);
 443                         gtk_adjustment_set_value (adjustment, (int)new_value);
 444                         break;
 445         }
 446
 447         gtk_adjustment_changed (adjustment);
 448 }
 449
 450 static void
 451 view_update_range_and_current_page (EvView *view)
 452 {
 453         gint current_page;
 454         gint best_current_page = -1;
 455
 456         /* Presentation trumps all other modes */
 457         if (view->presentation) {
 458                 view->start_page = view->current_page;
 459                 view->end_page = view->current_page;
 460         } else if (view->continuous) {
 461                 GdkRectangle current_area, unused, page_area;
 462                 GtkBorder border;
 463                 gboolean found = FALSE;
 464                 gint area_max = -1, area;
 465                 int i;
 466
 467                 if (!(view->vadjustment && view->hadjustment))
 468                         return;
 469
 470                 current_area.x = view->hadjustment->value;
 471                 current_area.width = view->hadjustment->upper;
 472                 current_area.y = view->vadjustment->value;
 473                 current_area.height = view->vadjustment->page_size;
 474
 475                 for (i = 0; i < ev_page_cache_get_n_pages (view->page_cache); i++) {
 476
 477                         get_page_extents (view, i, &page_area, &border);
 478
 479                         if (gdk_rectangle_intersect (&current_area, &page_area, &unused)) {
 480                                 area = unused.width * unused.height;
 481
 482                                 if (!found) {
 483                                         area_max = area;
 484                                         view->start_page = i;
 485                                         found = TRUE;
 486                                         best_current_page = i;
 487                                 }
 488                                 if (area > area_max) {
 489                                         best_current_page = (area == area_max) ? MIN (i, best_current_page) : i;
 490                                         area_max = area;
 491                                 }
 492
 493                                 view->end_page = i;
 494                         } else if (found && view->current_page <= view->end_page) {
 495                                 break;
 496                         }
 497                 }
 498
 499         } else if (view->dual_page) {
 500                 if (view->current_page % 2 == ev_page_cache_get_dual_even_left (view->page_cache)) {
 501                         view->start_page = view->current_page;
 502                         if (view->current_page + 1 < ev_page_cache_get_n_pages (view->page_cache))
 503                                 view->end_page = view->start_page + 1;
 504                         else
 505                                 view->end_page = view->start_page;
 506                 } else {
 507                         if (view->current_page < 1)
 508                                 view->start_page = view->current_page;
 509                         else
 510                                 view->start_page = view->current_page - 1;
 511                         view->end_page = view->current_page;
 512                 }
 513         } else {
 514                 view->start_page = view->current_page;
 515                 view->end_page = view->current_page;
 516         }
 517
 518         best_current_page = MAX (best_current_page, view->start_page);
 519         current_page = ev_page_cache_get_current_page (view->page_cache);
 520
 521         if ((current_page != best_current_page) && (view->pending_scroll == SCROLL_TO_KEEP_POSITION)) {
 522                 view->current_page = best_current_page;
 523                 ev_page_cache_set_current_page (view->page_cache, best_current_page);
 524         }
 525
 526         ev_pixbuf_cache_set_page_range (view->pixbuf_cache,
 527                                         view->start_page,
 528                                         view->end_page,
 529                                         view->rotation,
 530                                         view->scale,
 531                                         view->selection_info.selections);
 532 }
 533
 534 static void
 535 set_scroll_adjustment (EvView *view,
 536                        GtkOrientation  orientation,
 537                        GtkAdjustment  *adjustment)
 538 {
 539         GtkAdjustment **to_set;
 540
 541         if (orientation == GTK_ORIENTATION_HORIZONTAL)
 542                 to_set = &view->hadjustment;
 543         else
 544                 to_set = &view->vadjustment;
 545
 546         if (*to_set != adjustment) {
 547                 if (*to_set) {
 548                         g_signal_handlers_disconnect_by_func (*to_set,
 549                                                               (gpointer) on_adjustment_value_changed,
 550                                                               view);
 551                         g_object_unref (*to_set);
 552                 }
 553
 554                 *to_set = adjustment;
 555                 view_set_adjustment_values (view, orientation);
 556
 557                 if (*to_set) {
 558                         g_object_ref (*to_set);
 559                         g_signal_connect (*to_set, "value_changed",
 560                                           G_CALLBACK (on_adjustment_value_changed), view);
 561                 }
 562         }
 563 }
 564
 565 static void
 566 ev_view_set_scroll_adjustments (GtkLayout      *layout,
 567                                 GtkAdjustment  *hadjustment,
 568                                 GtkAdjustment  *vadjustment)
 569 {
 570         EvView *view = EV_VIEW (layout);
 571
 572         set_scroll_adjustment (view, GTK_ORIENTATION_HORIZONTAL, hadjustment);
 573         set_scroll_adjustment (view, GTK_ORIENTATION_VERTICAL, vadjustment);
 574
 575         on_adjustment_value_changed (NULL, view);
 576 }
 577
 578 static void
 579 add_scroll_binding_keypad (GtkBindingSet  *binding_set,
 580                            guint           keyval,
 581                            GdkModifierType modifiers,
 582                            EvScrollType    scroll,
 583                            gboolean        horizontal)
 584 {
 585   guint keypad_keyval = keyval - GDK_Left + GDK_KP_Left;
 586
 587   gtk_binding_entry_add_signal (binding_set, keyval, modifiers,
 588                                 "binding_activated", 2,
 589                                 EV_TYPE_SCROLL_TYPE, scroll,
 590                                 G_TYPE_BOOLEAN, horizontal);
 591   gtk_binding_entry_add_signal (binding_set, keypad_keyval, modifiers,
 592                                 "binding_activated", 2,
 593                                 EV_TYPE_SCROLL_TYPE, scroll,
 594                                 G_TYPE_BOOLEAN, horizontal);
 595 }
 596
 597 void
 598 ev_view_scroll (EvView        *view,
 599                 EvScrollType   scroll,
 600                 gboolean horizontal)
 601 {
 602         GtkAdjustment *adjustment;
 603         double value, increment;
 604         gboolean first_page = FALSE;
 605         gboolean last_page = FALSE;
 606
 607         view->jump_to_find_result = FALSE;
 608
 609         if (view->presentation || view->sizing_mode == EV_SIZING_BEST_FIT) {
 610                 switch (scroll) {
 611                         case EV_SCROLL_PAGE_BACKWARD:
 612                         case EV_SCROLL_STEP_BACKWARD:
 613                                 ev_view_previous_page (view);
 614                                 break;
 615                         case EV_SCROLL_PAGE_FORWARD:
 616                         case EV_SCROLL_STEP_FORWARD:
 617                                 ev_view_next_page (view);
 618                                 break;
 619                         default:
 620                                 break;
 621                 }
 622                 return;
 623         }
 624
 625         /* Assign values for increment and vertical adjustment */
 626         adjustment = horizontal ? view->hadjustment : view->vadjustment;
 627         increment = adjustment->page_size * 0.75;
 628         value = adjustment->value;
 629
 630         /* Assign boolean for first and last page */
 631         if (view->current_page == 0)
 632                 first_page = TRUE;
 633         if (view->current_page == ev_page_cache_get_n_pages (view->page_cache) - 1)
 634                 last_page = TRUE;
 635
 636         switch (scroll) {
 637                 case EV_SCROLL_PAGE_BACKWARD:
 638                         /* Do not jump backwards if at the first page */
 639                         if (value == (adjustment->lower) && first_page) {
 640                                 /* Do nothing */
 641                                 /* At the top of a page, assign the upper bound limit of previous page */
 642                         } else if (value == (adjustment->lower)) {
 643                                 value = adjustment->upper - adjustment->page_size;
 644                                 ev_view_previous_page (view);
 645                                 /* Jump to the top */
 646                         } else {
 647                                 value = MAX (value - increment, adjustment->lower);
 648                         }
 649                         break;
 650                 case EV_SCROLL_PAGE_FORWARD:
 651                         /* Do not jump forward if at the last page */
 652                         if (value == (adjustment->upper - adjustment->page_size) && last_page) {
 653                                 /* Do nothing */
 654                         /* At the bottom of a page, assign the lower bound limit of next page */
 655                         } else if (value == (adjustment->upper - adjustment->page_size)) {
 656                                 value = 0;
 657                                 ev_view_next_page (view);
 658                         /* Jump to the bottom */
 659                         } else {
 660                                 value = MIN (value + increment, adjustment->upper - adjustment->page_size);
 661                         }
 662                         break;
 663                 case EV_SCROLL_STEP_BACKWARD:
 664                         value -= adjustment->step_increment;
 665                         break;
 666                 case EV_SCROLL_STEP_FORWARD:
 667                         value += adjustment->step_increment;
 668                         break;
 669                 case EV_SCROLL_STEP_DOWN:
 670                         value -= adjustment->step_increment / 10;
 671                         break;
 672                 case EV_SCROLL_STEP_UP:
 673                         value += adjustment->step_increment / 10;
 674                         break;
 675                 default:
 676                         break;
 677         }
 678
 679         value = CLAMP (value, adjustment->lower,
 680                        adjustment->upper - adjustment->page_size);
 681
 682         gtk_adjustment_set_value (adjustment, value);
 683 }
 684
 685 #define MARGIN 5
 686
 687 static void
 688 ensure_rectangle_is_visible (EvView *view, GdkRectangle *rect)
 689 {
 690         GtkWidget *widget = GTK_WIDGET (view);
 691         GtkAdjustment *adjustment;
 692         int value;
 693
 694         view->pending_scroll = SCROLL_TO_FIND_LOCATION;
 695
 696         adjustment = view->vadjustment;
 697
 698         if (rect->y < adjustment->value) {
 699                 value = MAX (adjustment->lower, rect->y - MARGIN);
 700                 gtk_adjustment_set_value (view->vadjustment, value);
 701         } else if (rect->y + rect->height >
 702                    adjustment->value + widget->allocation.height) {
 703                 value = MIN (adjustment->upper, rect->y + rect->height -
 704                              widget->allocation.height + MARGIN);
 705                 gtk_adjustment_set_value (view->vadjustment, value);
 706         }
 707
 708         adjustment = view->hadjustment;
 709
 710         if (rect->x < adjustment->value) {
 711                 value = MAX (adjustment->lower, rect->x - MARGIN);
 712                 gtk_adjustment_set_value (view->hadjustment, value);
 713         } else if (rect->x + rect->height >
 714                    adjustment->value + widget->allocation.width) {
 715                 value = MIN (adjustment->upper, rect->x + rect->width -
 716                              widget->allocation.width + MARGIN);
 717                 gtk_adjustment_set_value (view->hadjustment, value);
 718         }
 719
 720         gtk_widget_queue_resize (GTK_WIDGET (view));
 721 }
 722
 723 /*** Geometry computations ***/
 724
 725 static void
 726 compute_border (EvView *view, int width, int height, GtkBorder *border)
 727 {
 728         if (view->presentation) {
 729                 border->left = 0;
 730                 border->right = 0;
 731                 border->top = 0;
 732                 border->bottom = 0;
 733         } else {
 734                 ev_document_misc_get_page_border_size (width, height, border);
 735         }
 736 }
 737
 738 static void
 739 get_page_y_offset (EvView *view, int page, double zoom, int *y_offset)
 740 {
 741         int max_width, offset;
 742         GtkBorder border;
 743
 744         g_return_if_fail (y_offset != NULL);
 745
 746         ev_page_cache_get_max_width (view->page_cache, view->rotation, zoom, &max_width);
 747
 748         compute_border (view, max_width, max_width, &border);
 749
 750         if (view->dual_page) {
 751                 ev_page_cache_get_height_to_page (view->page_cache, page,
 752                                                   view->rotation, zoom, NULL, &offset);
 753                 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);
 754         } else {
 755                 ev_page_cache_get_height_to_page (view->page_cache, page,
 756                                                   view->rotation, zoom, &offset, NULL);
 757                 offset += (page + 1) * view->spacing + page * (border.top + border.bottom);
 758         }
 759
 760         *y_offset = offset;
 761         return;
 762 }
 763
 764 static gboolean
 765 get_page_extents (EvView       *view,
 766                   gint          page,
 767                   GdkRectangle *page_area,
 768                   GtkBorder    *border)
 769 {
 770         GtkWidget *widget;
 771         int width, height;
 772
 773         widget = GTK_WIDGET (view);
 774
 775         /* Get the size of the page */
 776         ev_page_cache_get_size (view->page_cache, page,
 777                                 view->rotation,
 778                                 view->scale,
 779                                 &width, &height);
 780         compute_border (view, width, height, border);
 781         page_area->width = width + border->left + border->right;
 782         page_area->height = height + border->top + border->bottom;
 783
 784         if (view->presentation) {
 785                 page_area->x = (MAX (0, widget->allocation.width - width))/2;
 786                 page_area->y = (MAX (0, widget->allocation.height - height))/2;
 787         } else if (view->continuous) {
 788                 gint max_width;
 789                 gint x, y;
 790
 791                 ev_page_cache_get_max_width (view->page_cache, view->rotation,
 792                                              view->scale, &max_width);
 793                 max_width = max_width + border->left + border->right;
 794                 /* Get the location of the bounding box */
 795                 if (view->dual_page) {
 796                         x = view->spacing + ((page % 2 == ev_page_cache_get_dual_even_left (view->page_cache)) ? 0 : 1) * (max_width + view->spacing);
 797                         x = x + MAX (0, widget->allocation.width - (max_width * 2 + view->spacing * 3)) / 2;
 798                         if (page % 2 == ev_page_cache_get_dual_even_left (view->page_cache))
 799                                 x = x + (max_width - width - border->left - border->right);
 800                 } else {
 801                         x = view->spacing;
 802                         x = x + MAX (0, widget->allocation.width - (width + view->spacing * 2)) / 2;
 803                 }
 804
 805                 get_page_y_offset (view, page, view->scale, &y);
 806
 807                 page_area->x = x;
 808                 page_area->y = y;
 809         } else {
 810                 gint x, y;
 811                 if (view->dual_page) {
 812                         gint width_2, height_2;
 813                         gint max_width = width;
 814                         gint max_height = height;
 815                         GtkBorder overall_border;
 816                         gint other_page;
 817
 818                         other_page = (page % 2 == ev_page_cache_get_dual_even_left (view->page_cache)) ? page + 1: page - 1;
 819
 820                         /* First, we get the bounding box of the two pages */
 821                         if (other_page < ev_page_cache_get_n_pages (view->page_cache)
 822                             && (0 <= other_page)) {
 823                                 ev_page_cache_get_size (view->page_cache,
 824                                                         other_page,
 825                                                         view->rotation,
 826                                                         view->scale,
 827                                                         &width_2, &height_2);
 828                                 if (width_2 > width)
 829                                         max_width = width_2;
 830                                 if (height_2 > height)
 831                                         max_height = height_2;
 832                         }
 833                         compute_border (view, max_width, max_height, &overall_border);
 834
 835                         /* Find the offsets */
 836                         x = view->spacing;
 837                         y = view->spacing;
 838
 839                         /* Adjust for being the left or right page */
 840                         if (page % 2 == ev_page_cache_get_dual_even_left (view->page_cache))
 841                                 x = x + max_width - width;
 842                         else
 843                                 x = x + (max_width + overall_border.left + overall_border.right) + view->spacing;
 844
 845                         y = y + (max_height - height)/2;
 846
 847                         /* Adjust for extra allocation */
 848                         x = x + MAX (0, widget->allocation.width -
 849                                      ((max_width + overall_border.left + overall_border.right) * 2 + view->spacing * 3))/2;
 850                         y = y + MAX (0, widget->allocation.height - (height + view->spacing * 2))/2;
 851                 } else {
 852                         x = view->spacing;
 853                         y = view->spacing;
 854
 855                         /* Adjust for extra allocation */
 856                         x = x + MAX (0, widget->allocation.width - (width + border->left + border->right + view->spacing * 2))/2;
 857                         y = y + MAX (0, widget->allocation.height - (height + border->top + border->bottom +  view->spacing * 2))/2;
 858                 }
 859
 860                 page_area->x = x;
 861                 page_area->y = y;
 862         }
 863
 864         return TRUE;
 865 }
 866
 867 static void
 868 view_point_to_doc_point (EvView *view,
 869                          GdkPoint *view_point,
 870                          GdkRectangle *page_area,
 871                          double  *doc_point_x,
 872                          double  *doc_point_y)
 873 {
 874         *doc_point_x = (double) (view_point->x - page_area->x) / view->scale;
 875         *doc_point_y = (double) (view_point->y - page_area->y) / view->scale;
 876 }
 877
 878 static void
 879 view_rect_to_doc_rect (EvView *view,
 880                        GdkRectangle *view_rect,
 881                        GdkRectangle *page_area,
 882                        EvRectangle  *doc_rect)
 883 {
 884         doc_rect->x1 = (double) (view_rect->x - page_area->x) / view->scale;
 885         doc_rect->y1 = (double) (view_rect->y - page_area->y) / view->scale;
 886         doc_rect->x2 = doc_rect->x1 + (double) view_rect->width / view->scale;
 887         doc_rect->y2 = doc_rect->y1 + (double) view_rect->height / view->scale;
 888 }
 889
 890 static gboolean
 891 doc_point_to_view_point (EvView       *view,
 892                          int           page,
 893                          EvPoint      *doc_point,
 894                          GdkPoint     *view_point)
 895 {
 896         GdkRectangle page_area;
 897         GtkBorder border;
 898         double x, y, view_x, view_y;
 899         int width, height;
 900
 901         ev_page_cache_get_size (view->page_cache, page,
 902                                 view->rotation,
 903                                 1.0,
 904                                 &width, &height);
 905
 906         if (view->rotation == 0) {
 907                 x = doc_point->x;
 908                 y = doc_point->y;
 909         } else if (view->rotation == 90) {
 910                 x = width - doc_point->y;
 911                 y = doc_point->x;
 912         } else if (view->rotation == 180) {
 913                 x = width - doc_point->x;
 914                 y = height - doc_point->y;
 915         } else if (view->rotation == 270) {
 916                 x = doc_point->y;
 917                 y = height - doc_point->x;
 918         } else {
 919                 g_assert_not_reached ();
 920         }
 921
 922         get_page_extents (view, page, &page_area, &border);
 923
 924         view_x = x * view->scale;
 925         view_y = y * view->scale;
 926         view_point->x = view_x + page_area.x;
 927         view_point->y = view_y + page_area.y;
 928
 929         return (view_x > 0 && view_x <= page_area.width &&
 930                 view_y > 0 && view_y <= page_area.height);
 931 }
 932
 933 static void
 934 doc_rect_to_view_rect (EvView       *view,
 935                        int           page,
 936                        EvRectangle  *doc_rect,
 937                        GdkRectangle *view_rect)
 938 {
 939         GdkRectangle page_area;
 940         GtkBorder border;
 941         double x, y, w, h;
 942         int width, height;
 943
 944         ev_page_cache_get_size (view->page_cache, page,
 945                                 view->rotation,
 946                                 1.0,
 947                                 &width, &height);
 948
 949         if (view->rotation == 0) {
 950                 x = doc_rect->x1;
 951                 y = doc_rect->y1;
 952                 w = doc_rect->x2 - doc_rect->x1;
 953                 h = doc_rect->y2 - doc_rect->y1;
 954         } else if (view->rotation == 90) {
 955                 x = width - doc_rect->y2;
 956                 y = doc_rect->x1;
 957                 w = doc_rect->y2 - doc_rect->y1;
 958                 h = doc_rect->x2 - doc_rect->x1;
 959         } else if (view->rotation == 180) {
 960                 x = width - doc_rect->x2;
 961                 y = height - doc_rect->y2;
 962                 w = doc_rect->x2 - doc_rect->x1;
 963                 h = doc_rect->y2 - doc_rect->y1;
 964         } else if (view->rotation == 270) {
 965                 x = doc_rect->y1;
 966                 y = height - doc_rect->x2;
 967                 w = doc_rect->y2 - doc_rect->y1;
 968                 h = doc_rect->x2 - doc_rect->x1;
 969         } else {
 970                 g_assert_not_reached ();
 971         }
 972
 973         get_page_extents (view, page, &page_area, &border);
 974
 975         view_rect->x = x * view->scale + page_area.x;
 976         view_rect->y = y * view->scale + page_area.y;
 977         view_rect->width = w * view->scale;
 978         view_rect->height = h * view->scale;
 979 }
 980
 981 static void
 982 find_page_at_location (EvView  *view,
 983                        gdouble  x,
 984                        gdouble  y,
 985                        gint    *page,
 986                        gint    *x_offset,
 987                        gint    *y_offset)
 988 {
 989         int i;
 990
 991         if (view->document == NULL)
 992                 return;
 993
 994         g_assert (page);
 995         g_assert (x_offset);
 996         g_assert (y_offset);
 997
 998         for (i = view->start_page; i <= view->end_page; i++) {
 999                 GdkRectangle page_area;
1000                 GtkBorder border;
1001
1002                 if (! get_page_extents (view, i, &page_area, &border))
1003                         continue;
1004
1005                 if ((x >= page_area.x + border.left) &&
1006                     (x < page_area.x + page_area.width - border.right) &&
1007                     (y >= page_area.y + border.top) &&
1008                     (y < page_area.y + page_area.height - border.bottom)) {
1009                         *page = i;
1010                         *x_offset = x - (page_area.x + border.left);
1011                         *y_offset = y - (page_area.y + border.top);
1012                         return;
1013                 }
1014         }
1015
1016         *page = -1;
1017 }
1018
1019 static gboolean
1020 location_in_text (EvView  *view,
1021                   gdouble  x,
1022                   gdouble  y)
1023 {
1024         GdkRegion *region;
1025         gint page = -1;
1026         gint x_offset = 0, y_offset = 0;
1027
1028         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1029
1030         if (page == -1)
1031                 return FALSE;
1032
1033         region = ev_pixbuf_cache_get_text_mapping (view->pixbuf_cache, page);
1034
1035         if (region)
1036                 return gdk_region_point_in (region, x_offset / view->scale, y_offset / view->scale);
1037         else
1038                 return FALSE;
1039 }
1040
1041 static int
1042 ev_view_get_width (EvView *view)
1043 {
1044         return GTK_WIDGET (view)->allocation.width;
1045 }
1046
1047 static int
1048 ev_view_get_height (EvView *view)
1049 {
1050         return GTK_WIDGET (view)->allocation.height;
1051 }
1052
1053 static gboolean
1054 location_in_selected_text (EvView  *view,
1055                            gdouble  x,
1056                            gdouble  y)
1057 {
1058         gint page = -1;
1059         gint x_offset = 0, y_offset = 0;
1060         EvViewSelection *selection;
1061         GList *l = NULL;
1062
1063         for (l = view->selection_info.selections; l != NULL; l = l->next) {
1064                 selection = (EvViewSelection *)l->data;
1065
1066                 find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1067
1068                 if (page != selection->page)
1069                         continue;
1070
1071                 if (selection->covered_region &&
1072                     gdk_region_point_in (selection->covered_region, x_offset, y_offset))
1073                         return TRUE;
1074         }
1075
1076         return FALSE;
1077 }
1078
1079 static gboolean
1080 get_doc_point_from_offset (EvView *view,
1081                            gint    page,
1082                            gint    x_offset,
1083                            gint    y_offset,
1084                            gint   *x_new,
1085                            gint   *y_new)
1086 {
1087         int width, height;
1088         double x, y;
1089
1090         ev_page_cache_get_size (view->page_cache, page,
1091                                 view->rotation,
1092                                 1.0,
1093                                 &width, &height);
1094
1095         x_offset = x_offset / view->scale;
1096         y_offset = y_offset / view->scale;
1097
1098         if (view->rotation == 0) {
1099                 x = x_offset;
1100                 y = y_offset;
1101         } else if (view->rotation == 90) {
1102                 x = y_offset;
1103                 y = width - x_offset;
1104         } else if (view->rotation == 180) {
1105                 x = width - x_offset;
1106                 y = height - y_offset;
1107         } else if (view->rotation == 270) {
1108                 x = height - y_offset;
1109                 y = x_offset;
1110         } else {
1111                 g_assert_not_reached ();
1112         }
1113
1114         *x_new = x;
1115         *y_new = y;
1116
1117         return TRUE;
1118 }
1119
1120 /*** Hyperref ***/
1121 static EvLink *
1122 ev_view_get_link_at_location (EvView  *view,
1123                               gdouble  x,
1124                               gdouble  y)
1125 {
1126         gint page = -1;
1127         gint x_offset = 0, y_offset = 0;
1128         gint x_new = 0, y_new = 0;
1129         GList *link_mapping;
1130
1131         if (!EV_IS_DOCUMENT_LINKS (view->document))
1132                 return NULL;
1133
1134         x += view->scroll_x;
1135         y += view->scroll_y;
1136
1137         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1138
1139         if (page == -1)
1140                 return NULL;
1141
1142
1143         if (get_doc_point_from_offset (view, page, x_offset,
1144                                        y_offset, &x_new, &y_new) == FALSE)
1145                 return NULL;
1146
1147         link_mapping = ev_pixbuf_cache_get_link_mapping (view->pixbuf_cache, page);
1148
1149         if (link_mapping)
1150                 return ev_link_mapping_find (link_mapping, x_new, y_new);
1151         else
1152                 return NULL;
1153 }
1154
1155 static void
1156 goto_fitr_dest (EvView *view, EvLinkDest *dest)
1157 {
1158         EvPoint doc_point;
1159         gdouble zoom, left, top;
1160         gboolean change_left, change_top;
1161
1162         left = ev_link_dest_get_left (dest, &change_left);
1163         top = ev_link_dest_get_top (dest, &change_top);
1164
1165         zoom = zoom_for_size_best_fit (ev_link_dest_get_right (dest) - left,
1166                                        ev_link_dest_get_bottom (dest) - top,
1167                                        ev_view_get_width (view),
1168                                        ev_view_get_height (view), 0, 0);
1169
1170         ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1171         ev_view_set_zoom (view, zoom, FALSE);
1172
1173         doc_point.x = change_left ? left : 0;
1174         doc_point.y = change_top ? top : 0;
1175
1176         view->current_page = ev_link_dest_get_page (dest);
1177         if (change_left || change_top)
1178                 view->pending_point = doc_point;
1179         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1180
1181         gtk_widget_queue_resize (GTK_WIDGET (view));
1182 }
1183
1184 static void
1185 goto_fitv_dest (EvView *view, EvLinkDest *dest)
1186 {
1187         EvPoint doc_point;
1188         int doc_width, doc_height, page;
1189         double zoom, left;
1190         gboolean change_left;
1191
1192         page = ev_link_dest_get_page (dest);
1193         ev_page_cache_get_size (view->page_cache, page, 0, 1.0, &doc_width, &doc_height);
1194
1195         left = ev_link_dest_get_left (dest, &change_left);
1196         doc_point.x = change_left ? left : 0;
1197         doc_point.y = 0;
1198
1199         zoom = zoom_for_size_fit_height (doc_width - doc_point.x , doc_height,
1200                                          ev_view_get_width (view),
1201                                          ev_view_get_height (view), 0);
1202
1203         ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1204         ev_view_set_zoom (view, zoom, FALSE);
1205
1206         view->current_page = page;
1207         if (change_left)
1208                 view->pending_point = doc_point;
1209         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1210
1211         gtk_widget_queue_resize (GTK_WIDGET (view));
1212 }
1213
1214 static void
1215 goto_fith_dest (EvView *view, EvLinkDest *dest)
1216 {
1217         EvPoint doc_point;
1218         int doc_width, doc_height, page;
1219         gdouble zoom, top;
1220         gboolean change_top;
1221
1222         page = ev_link_dest_get_page (dest);
1223         ev_page_cache_get_size (view->page_cache, page, 0, 1.0, &doc_width, &doc_height);
1224
1225         top = ev_link_dest_get_top (dest, &change_top);
1226
1227         doc_point.x = 0;
1228         doc_point.y = change_top ? top : 0;
1229
1230         zoom = zoom_for_size_fit_width (doc_width, top,
1231                                         ev_view_get_width (view),
1232                                         ev_view_get_height (view), 0);
1233
1234         ev_view_set_sizing_mode (view, EV_SIZING_FIT_WIDTH);
1235         ev_view_set_zoom (view, zoom, FALSE);
1236
1237         view->current_page = page;
1238         if (change_top)
1239                 view->pending_point = doc_point;
1240         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1241
1242         gtk_widget_queue_resize (GTK_WIDGET (view));
1243 }
1244
1245 static void
1246 goto_fit_dest (EvView *view, EvLinkDest *dest)
1247 {
1248         double zoom;
1249         int doc_width, doc_height;
1250         int page;
1251
1252         page = ev_link_dest_get_page (dest);
1253         ev_page_cache_get_size (view->page_cache, page, 0, 1.0, &doc_width, &doc_height);
1254
1255         zoom = zoom_for_size_best_fit (doc_width, doc_height, ev_view_get_width (view),
1256                                        ev_view_get_height (view), 0, 0);
1257
1258         ev_view_set_sizing_mode (view, EV_SIZING_BEST_FIT);
1259         ev_view_set_zoom (view, zoom, FALSE);
1260
1261         view->current_page = page;
1262         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1263
1264         gtk_widget_queue_resize (GTK_WIDGET (view));
1265 }
1266
1267 static void
1268 goto_xyz_dest (EvView *view, EvLinkDest *dest)
1269 {
1270         EvPoint doc_point;
1271         gint page;
1272         gdouble zoom, left, top;
1273         gboolean change_zoom, change_left, change_top;
1274
1275         zoom = ev_link_dest_get_zoom (dest, &change_zoom);
1276         page = ev_link_dest_get_page (dest);
1277
1278         if (change_zoom && zoom > 1) {
1279                 ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1280                 ev_view_set_zoom (view, zoom, FALSE);
1281         }
1282
1283         left = ev_link_dest_get_left (dest, &change_left);
1284         top = ev_link_dest_get_top (dest, &change_top);
1285
1286         doc_point.x = change_left ? left : 0;
1287         doc_point.y = change_top ? top : 0;
1288
1289         view->current_page = page;
1290         if (change_left || change_top)
1291                 view->pending_point = doc_point;
1292         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1293
1294         gtk_widget_queue_resize (GTK_WIDGET (view));
1295 }
1296
1297 static void
1298 goto_dest (EvView *view, EvLinkDest *dest)
1299 {
1300         EvLinkDestType type;
1301         int page, n_pages, current_page;
1302
1303         page = ev_link_dest_get_page (dest);
1304         n_pages = ev_page_cache_get_n_pages (view->page_cache);
1305
1306         if (page < 0 || page >= n_pages)
1307                 return;
1308
1309         current_page = view->current_page;
1310
1311         type = ev_link_dest_get_dest_type (dest);
1312
1313         switch (type) {
1314                 case EV_LINK_DEST_TYPE_PAGE:
1315                         ev_page_cache_set_current_page (view->page_cache, page);
1316                         break;
1317                 case EV_LINK_DEST_TYPE_FIT:
1318                         goto_fit_dest (view, dest);
1319                         break;
1320                 case EV_LINK_DEST_TYPE_FITH:
1321                         goto_fith_dest (view, dest);
1322                         break;
1323                 case EV_LINK_DEST_TYPE_FITV:
1324                         goto_fitv_dest (view, dest);
1325                         break;
1326                 case EV_LINK_DEST_TYPE_FITR:
1327                         goto_fitr_dest (view, dest);
1328                         break;
1329                 case EV_LINK_DEST_TYPE_XYZ:
1330                         goto_xyz_dest (view, dest);
1331                         break;
1332                 case EV_LINK_DEST_TYPE_PAGE_LABEL:
1333                         ev_page_cache_set_page_label (view->page_cache, ev_link_dest_get_page_label (dest));
1334                         break;
1335                 default:
1336                         g_assert_not_reached ();
1337         }
1338
1339         if (current_page != view->current_page)
1340                 ev_page_cache_set_current_page (view->page_cache,
1341                                                 view->current_page);
1342 }
1343
1344 static void
1345 ev_view_goto_dest (EvView *view, EvLinkDest *dest)
1346 {
1347         EvLinkDestType type;
1348
1349         type = ev_link_dest_get_dest_type (dest);
1350
1351         if (type == EV_LINK_DEST_TYPE_NAMED) {
1352                 EvLinkDest  *dest2;
1353                 const gchar *named_dest;
1354
1355                 named_dest = ev_link_dest_get_named_dest (dest);
1356                 dest2 = ev_document_links_find_link_dest (EV_DOCUMENT_LINKS (view->document),
1357                                                           named_dest);
1358                 if (dest2) {
1359                         goto_dest (view, dest2);
1360                         g_object_unref (dest2);
1361                 }
1362
1363                 return;
1364         }
1365
1366         goto_dest (view, dest);
1367 }
1368
1369 void
1370 ev_view_handle_link (EvView *view, EvLink *link)
1371 {
1372         EvLinkAction    *action = NULL;
1373         EvLinkActionType type;
1374
1375         action = ev_link_get_action (link);
1376         if (!action)
1377                 return;
1378
1379         type = ev_link_action_get_action_type (action);
1380
1381         switch (type) {
1382                 case EV_LINK_ACTION_TYPE_GOTO_DEST: {
1383                         EvLinkDest *dest;
1384
1385                         g_signal_emit (view, signals[SIGNAL_HANDLE_LINK], 0, link);
1386
1387                         dest = ev_link_action_get_dest (action);
1388                         ev_view_goto_dest (view, dest);
1389                 }
1390                         break;
1391                 case EV_LINK_ACTION_TYPE_GOTO_REMOTE:
1392                 case EV_LINK_ACTION_TYPE_EXTERNAL_URI:
1393                 case EV_LINK_ACTION_TYPE_LAUNCH:
1394                 case EV_LINK_ACTION_TYPE_NAMED:
1395                         g_signal_emit (view, signals[SIGNAL_EXTERNAL_LINK], 0, action);
1396                         break;
1397         }
1398 }
1399
1400 gchar *
1401 ev_view_page_label_from_dest (EvView *view, EvLinkDest *dest)
1402 {
1403         EvLinkDestType type;
1404         gchar *msg = NULL;
1405
1406         type = ev_link_dest_get_dest_type (dest);
1407
1408         switch (type) {
1409                 case EV_LINK_DEST_TYPE_NAMED: {
1410                         EvLinkDest  *dest2;
1411                         const gchar *named_dest;
1412
1413                         named_dest = ev_link_dest_get_named_dest (dest);
1414                         dest2 = ev_document_links_find_link_dest (EV_DOCUMENT_LINKS (view->document),
1415                                                                   named_dest);
1416                         if (dest2) {
1417                                 msg = ev_page_cache_get_page_label (view->page_cache,
1418                                                                     ev_link_dest_get_page (dest2));
1419                                 g_object_unref (dest2);
1420                         }
1421                 }
1422
1423                         break;
1424                 case EV_LINK_DEST_TYPE_PAGE_LABEL: {
1425                         msg = g_strdup (ev_link_dest_get_page_label (dest));
1426                 }
1427                         break;
1428                 default:
1429                         msg = ev_page_cache_get_page_label (view->page_cache,
1430                                                             ev_link_dest_get_page (dest));
1431         }
1432
1433         return msg;
1434 }
1435
1436 static char *
1437 tip_from_action_named (EvLinkAction *action)
1438 {
1439         const gchar *name = ev_link_action_get_name (action);
1440
1441         if (g_ascii_strcasecmp (name, "FirstPage") == 0) {
1442                 return g_strdup (_("Go to first page"));
1443         } else if (g_ascii_strcasecmp (name, "PrevPage") == 0) {
1444                 return g_strdup (_("Go to previous page"));
1445         } else if (g_ascii_strcasecmp (name, "NextPage") == 0) {
1446                 return g_strdup (_("Go to next page"));
1447         } else if (g_ascii_strcasecmp (name, "LastPage") == 0) {
1448                 return g_strdup (_("Go to last page"));
1449         } else if (g_ascii_strcasecmp (name, "GoToPage") == 0) {
1450                 return g_strdup (_("Go to page"));
1451         } else if (g_ascii_strcasecmp (name, "Find") == 0) {
1452                 return g_strdup (_("Find"));
1453         }
1454
1455         return NULL;
1456 }
1457
1458 static char *
1459 tip_from_link (EvView *view, EvLink *link)
1460 {
1461         EvLinkAction *action;
1462         EvLinkActionType type;
1463         char *msg = NULL;
1464         char *page_label;
1465         const char *title;
1466
1467         action = ev_link_get_action (link);
1468         title = ev_link_get_title (link);
1469
1470         if (!action)
1471                 return title ? g_strdup (title) : NULL;
1472
1473         type = ev_link_action_get_action_type (action);
1474
1475         switch (type) {
1476                 case EV_LINK_ACTION_TYPE_GOTO_DEST:
1477                         page_label = ev_view_page_label_from_dest (view,
1478                                                                    ev_link_action_get_dest (action));
1479                         if (page_label) {
1480                                 msg = g_strdup_printf (_("Go to page %s"), page_label);
1481                                 g_free (page_label);
1482                         }
1483                         break;
1484                 case EV_LINK_ACTION_TYPE_GOTO_REMOTE:
1485                         if (title) {
1486                                 msg = g_strdup_printf (_("Go to %s on file “%s”"), title,
1487                                                        ev_link_action_get_filename (action));
1488                         } else {
1489                                 msg = g_strdup_printf (_("Go to file “%s”"),
1490                                                        ev_link_action_get_filename (action));
1491                         }
1492                         break;
1493                 case EV_LINK_ACTION_TYPE_EXTERNAL_URI:
1494                         msg = g_strdup (ev_link_action_get_uri (action));
1495                         break;
1496                 case EV_LINK_ACTION_TYPE_LAUNCH:
1497                         msg = g_strdup_printf (_("Launch %s"),
1498                                                ev_link_action_get_filename (action));
1499                         break;
1500                 case EV_LINK_ACTION_TYPE_NAMED:
1501                         msg = tip_from_action_named (action);
1502                         break;
1503                 default:
1504                         if (title)
1505                                 msg = g_strdup (title);
1506                         break;
1507         }
1508
1509         return msg;
1510 }
1511
1512 static void
1513 ev_view_handle_cursor_over_xy (EvView *view, gint x, gint y)
1514 {
1515         EvLink      *link;
1516         EvFormField *field;
1517
1518         if (view->cursor == EV_VIEW_CURSOR_HIDDEN)
1519                 return;
1520
1521         if (view->drag_info.in_drag) {
1522                 if (view->cursor != EV_VIEW_CURSOR_DRAG)
1523                         ev_view_set_cursor (view, EV_VIEW_CURSOR_DRAG);
1524                 return;
1525         }
1526
1527         if (view->scroll_info.autoscrolling) {
1528                 if (view->cursor != EV_VIEW_CURSOR_AUTOSCROLL)
1529                         ev_view_set_cursor (view, EV_VIEW_CURSOR_AUTOSCROLL);
1530                 return;
1531         }
1532
1533         link = ev_view_get_link_at_location (view, x, y);
1534
1535 #if !GTK_CHECK_VERSION (2, 11, 7)
1536         if (view->link_tooltip == NULL) {
1537                 view->link_tooltip = ev_tooltip_new (GTK_WIDGET (view));
1538         }
1539
1540         if (view->hovered_link != link) {
1541                 view->hovered_link = link;
1542                 ev_tooltip_deactivate (EV_TOOLTIP (view->link_tooltip));
1543         }
1544 #endif
1545
1546         if (link) {
1547 #if GTK_CHECK_VERSION (2, 11, 7)
1548                 g_object_set (view, "has-tooltip", TRUE, NULL);
1549 #else
1550                 char *msg = tip_from_link (view, link);
1551
1552                 if (msg && g_utf8_validate (msg, -1, NULL)) {
1553                         EvTooltip *tooltip = EV_TOOLTIP (view->link_tooltip);
1554
1555                         ev_tooltip_set_position (tooltip, x, y);
1556                         ev_tooltip_set_text (tooltip, msg);
1557                         ev_tooltip_activate (tooltip);
1558                 }
1559                 g_free (msg);
1560 #endif
1561                 ev_view_set_cursor (view, EV_VIEW_CURSOR_LINK);
1562         } else if ((field = ev_view_get_form_field_at_location (view, x, y))) {
1563                 if (field->is_read_only) {
1564                         if (view->cursor == EV_VIEW_CURSOR_LINK ||
1565                             view->cursor == EV_VIEW_CURSOR_IBEAM ||
1566                             view->cursor == EV_VIEW_CURSOR_DRAG)
1567                                 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
1568                 } else if (EV_IS_FORM_FIELD_TEXT (field)) {
1569                         ev_view_set_cursor (view, EV_VIEW_CURSOR_IBEAM);
1570                 } else {
1571                         ev_view_set_cursor (view, EV_VIEW_CURSOR_LINK);
1572                 }
1573         } else if (location_in_text (view, x + view->scroll_x, y + view->scroll_y)) {
1574                 ev_view_set_cursor (view, EV_VIEW_CURSOR_IBEAM);
1575         } else {
1576                 if (view->cursor == EV_VIEW_CURSOR_LINK ||
1577                     view->cursor == EV_VIEW_CURSOR_IBEAM ||
1578                     view->cursor == EV_VIEW_CURSOR_DRAG)
1579                         ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
1580         }
1581 }
1582
1583 /*** Images ***/
1584 static EvImage *
1585 ev_view_get_image_at_location (EvView  *view,
1586                                gdouble  x,
1587                                gdouble  y)
1588 {
1589         gint page = -1;
1590         gint x_offset = 0, y_offset = 0;
1591         gint x_new = 0, y_new = 0;
1592         GList *image_mapping;
1593
1594         if (!EV_IS_DOCUMENT_IMAGES (view->document))
1595                 return NULL;
1596
1597         x += view->scroll_x;
1598         y += view->scroll_y;
1599
1600         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1601
1602         if (page == -1)
1603                 return NULL;
1604
1605         if (get_doc_point_from_offset (view, page, x_offset,
1606                                        y_offset, &x_new, &y_new) == FALSE)
1607                 return NULL;
1608
1609         image_mapping = ev_pixbuf_cache_get_image_mapping (view->pixbuf_cache, page);
1610
1611         if (image_mapping)
1612                 return ev_image_mapping_find (image_mapping, x_new, y_new);
1613         else
1614                 return NULL;
1615 }
1616
1617 /*** Forms ***/
1618 static EvFormField *
1619 ev_view_get_form_field_at_location (EvView  *view,
1620                                     gdouble  x,
1621                                     gdouble  y)
1622 {
1623         gint page = -1;
1624         gint x_offset = 0, y_offset = 0;
1625         gint x_new = 0, y_new = 0;
1626         GList *forms_mapping;
1627
1628         if (!EV_IS_DOCUMENT_FORMS (view->document))
1629                 return NULL;
1630
1631         x += view->scroll_x;
1632         y += view->scroll_y;
1633
1634         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1635
1636         if (page == -1)
1637                 return NULL;
1638
1639         if (get_doc_point_from_offset (view, page, x_offset,
1640                                        y_offset, &x_new, &y_new) == FALSE)
1641                 return NULL;
1642
1643         forms_mapping = ev_pixbuf_cache_get_form_field_mapping (view->pixbuf_cache, page);
1644
1645         if (forms_mapping)
1646                 return ev_form_field_mapping_find (forms_mapping, x_new, y_new);
1647         else
1648                 return NULL;
1649 }
1650
1651 static GdkRegion *
1652 ev_view_form_field_get_region (EvView      *view,
1653                                EvFormField *field)
1654 {
1655         EvRectangle  field_area;
1656         GdkRectangle view_area;
1657         GList       *forms_mapping;
1658
1659         forms_mapping = ev_pixbuf_cache_get_form_field_mapping (view->pixbuf_cache,
1660                                                                 field->page);
1661         ev_form_field_mapping_get_area (forms_mapping, field, &field_area);
1662         doc_rect_to_view_rect (view, field->page, &field_area, &view_area);
1663         view_area.x -= view->scroll_x;
1664         view_area.y -= view->scroll_y;
1665
1666         return gdk_region_rectangle (&view_area);
1667 }
1668
1669 static gboolean
1670 ev_view_forms_remove_widgets (EvView *view)
1671 {
1672         ev_view_remove_all (view);
1673
1674         return FALSE;
1675 }
1676
1677 static void
1678 ev_view_form_field_destroy (GtkWidget *widget,
1679                             EvView    *view)
1680 {
1681         g_idle_add ((GSourceFunc)ev_view_forms_remove_widgets, view);
1682 }
1683
1684 static GtkWidget *
1685 ev_view_form_field_button_create_widget (EvView      *view,
1686                                          EvFormField *field)
1687 {
1688         EvFormFieldButton *field_button = EV_FORM_FIELD_BUTTON (field);
1689         GdkRegion         *field_region = NULL;
1690
1691         switch (field_button->type) {
1692                 case EV_FORM_FIELD_BUTTON_PUSH:
1693                         return NULL;
1694                 case EV_FORM_FIELD_BUTTON_CHECK:
1695                 case EV_FORM_FIELD_BUTTON_RADIO: {
1696                         gboolean  state;
1697                         GList    *forms_mapping, *l;
1698
1699                         state = ev_document_forms_form_field_button_get_state (EV_DOCUMENT_FORMS (view->document),
1700                                                                                field);
1701
1702                         /* FIXME: it actually depends on NoToggleToOff flags */
1703                         if (field_button->type == EV_FORM_FIELD_BUTTON_RADIO &&
1704                             state && field_button->state)
1705                                 return NULL;
1706
1707                         field_region = ev_view_form_field_get_region (view, field);
1708
1709                         /* For radio buttons and checkbox buttons that are in a set
1710                          * we need to update also the region for the current selected item
1711                          */
1712                         forms_mapping = ev_pixbuf_cache_get_form_field_mapping (view->pixbuf_cache,
1713                                                                                 field->page);
1714                         for (l = forms_mapping; l; l = g_list_next (l)) {
1715                                 EvFormField *button = ((EvFormFieldMapping *)(l->data))->field;
1716                                 GdkRegion   *button_region;
1717
1718                                 if (button->id == field->id)
1719                                         continue;
1720
1721                                 /* FIXME: only buttons in the same group should be updated */
1722                                 if (!EV_IS_FORM_FIELD_BUTTON (button) ||
1723                                     EV_FORM_FIELD_BUTTON (button)->type != field_button->type ||
1724                                     EV_FORM_FIELD_BUTTON (button)->state != TRUE)
1725                                         continue;
1726
1727                                 button_region = ev_view_form_field_get_region (view, button);
1728                                 gdk_region_union (field_region, button_region);
1729                                 gdk_region_destroy (button_region);
1730                         }
1731
1732                         ev_document_forms_form_field_button_set_state (EV_DOCUMENT_FORMS (view->document),
1733                                                                        field, !state);
1734                         field_button->state = !state;
1735                 }
1736                         break;
1737         }
1738
1739         ev_pixbuf_cache_reload_page (view->pixbuf_cache,
1740                                      field_region,
1741                                      field->page,
1742                                      view->rotation,
1743                                      view->scale);
1744         gdk_region_destroy (field_region);
1745
1746         return NULL;
1747 }
1748
1749 static void
1750 ev_view_form_field_text_save (EvView    *view,
1751                               GtkWidget *widget)
1752 {
1753         EvFormField *field;
1754
1755         if (!view->document)
1756                 return;
1757
1758         field = g_object_get_data (G_OBJECT (widget), "form-field");
1759
1760         if (field->changed) {
1761                 EvFormFieldText *field_text = EV_FORM_FIELD_TEXT (field);
1762                 GdkRegion       *field_region;
1763
1764                 field_region = ev_view_form_field_get_region (view, field);
1765
1766                 ev_document_forms_form_field_text_set_text (EV_DOCUMENT_FORMS (view->document),
1767                                                             field, field_text->text);
1768                 field->changed = FALSE;
1769                 ev_pixbuf_cache_reload_page (view->pixbuf_cache,
1770                                              field_region,
1771                                              field->page,
1772                                              view->rotation,
1773                                              view->scale);
1774                 gdk_region_destroy (field_region);
1775         }
1776 }
1777
1778 static void
1779 ev_view_form_field_text_changed (GtkWidget   *widget,
1780                                  EvFormField *field)
1781 {
1782         EvFormFieldText *field_text = EV_FORM_FIELD_TEXT (field);
1783         gchar           *text = NULL;
1784
1785         if (GTK_IS_ENTRY (widget)) {
1786                 text = g_strdup (gtk_entry_get_text (GTK_ENTRY (widget)));
1787         } else if (GTK_IS_TEXT_BUFFER (widget)) {
1788                 GtkTextIter start, end;
1789
1790                 gtk_text_buffer_get_bounds (GTK_TEXT_BUFFER (widget), &start, &end);
1791                 text = gtk_text_buffer_get_text (GTK_TEXT_BUFFER (widget),
1792                                                  &start, &end, FALSE);
1793         }
1794
1795         if (!field_text->text ||
1796             (field_text->text && g_ascii_strcasecmp (field_text->text, text) != 0)) {
1797                 g_free (field_text->text);
1798                 field_text->text = text;
1799                 field->changed = TRUE;
1800         }
1801 }
1802
1803 static GtkWidget *
1804 ev_view_form_field_text_create_widget (EvView      *view,
1805                                        EvFormField *field)
1806 {
1807         EvFormFieldText *field_text = EV_FORM_FIELD_TEXT (field);
1808         GtkWidget       *text = NULL;
1809         gchar           *txt;
1810
1811         txt = ev_document_forms_form_field_text_get_text (EV_DOCUMENT_FORMS (view->document),
1812                                                           field);
1813
1814         switch (field_text->type) {
1815                 case EV_FORM_FIELD_TEXT_FILE_SELECT:
1816                         /* TODO */
1817                 case EV_FORM_FIELD_TEXT_NORMAL:
1818                         text = gtk_entry_new ();
1819                         gtk_entry_set_has_frame (GTK_ENTRY (text), FALSE);
1820                         gtk_entry_set_max_length (GTK_ENTRY (text), field_text->max_len);
1821                         gtk_entry_set_visibility (GTK_ENTRY (text), !field_text->is_password);
1822
1823                         if (txt) {
1824                                 gtk_entry_set_text (GTK_ENTRY (text), txt);
1825                                 g_free (txt);
1826                         }
1827
1828                         g_signal_connect (G_OBJECT (text), "changed",
1829                                           G_CALLBACK (ev_view_form_field_text_changed),
1830                                           field);
1831                         g_signal_connect_after (G_OBJECT (text), "activate",
1832                                                 G_CALLBACK (ev_view_form_field_destroy),
1833                                                 view);
1834                         break;
1835                 case EV_FORM_FIELD_TEXT_MULTILINE: {
1836                         GtkTextBuffer *buffer;
1837
1838                         text = gtk_text_view_new ();
1839                         buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (text));
1840
1841                         if (txt) {
1842                                 gtk_text_buffer_set_text (buffer, txt, -1);
1843                                 g_free (txt);
1844                         }
1845
1846                         g_signal_connect (G_OBJECT (buffer), "changed",
1847                                           G_CALLBACK (ev_view_form_field_text_changed),
1848                                           field);
1849                 }
1850                         break;
1851         }
1852
1853         g_object_weak_ref (G_OBJECT (text),
1854                            (GWeakNotify)ev_view_form_field_text_save,
1855                            view);
1856
1857         return text;
1858 }
1859
1860 static void
1861 ev_view_form_field_choice_save (EvView    *view,
1862                                 GtkWidget *widget)
1863 {
1864         EvFormField *field;
1865
1866         if (!view->document)
1867                 return;
1868
1869         field = g_object_get_data (G_OBJECT (widget), "form-field");
1870
1871         if (field->changed) {
1872                 GList             *l;
1873                 EvFormFieldChoice *field_choice = EV_FORM_FIELD_CHOICE (field);
1874                 GdkRegion         *field_region;
1875
1876                 field_region = ev_view_form_field_get_region (view, field);
1877
1878                 if (field_choice->is_editable) {
1879                         ev_document_forms_form_field_choice_set_text (EV_DOCUMENT_FORMS (view->document),
1880                                                                       field, field_choice->text);
1881                 } else {
1882                         ev_document_forms_form_field_choice_unselect_all (EV_DOCUMENT_FORMS (view->document), field);
1883                         for (l = field_choice->selected_items; l; l = g_list_next (l)) {
1884                                 ev_document_forms_form_field_choice_select_item (EV_DOCUMENT_FORMS (view->document),
1885                                                                                  field,
1886                                                                                  GPOINTER_TO_INT (l->data));
1887                         }
1888                 }
1889                 field->changed = FALSE;
1890                 ev_pixbuf_cache_reload_page (view->pixbuf_cache,
1891                                              field_region,
1892                                              field->page,
1893                                              view->rotation,
1894                                              view->scale);
1895                 gdk_region_destroy (field_region);
1896         }
1897 }
1898
1899 static void
1900 ev_view_form_field_choice_changed (GtkWidget   *widget,
1901                                    EvFormField *field)
1902 {
1903         EvFormFieldChoice *field_choice = EV_FORM_FIELD_CHOICE (field);
1904
1905         if (GTK_IS_COMBO_BOX (widget)) {
1906                 gint item;
1907
1908                 item = gtk_combo_box_get_active (GTK_COMBO_BOX (widget));
1909                 if (GPOINTER_TO_INT (field_choice->selected_items->data) != item) {
1910                         g_list_free (field_choice->selected_items);
1911                         field_choice->selected_items = NULL;
1912                         field_choice->selected_items = g_list_prepend (field_choice->selected_items,
1913                                                                        GINT_TO_POINTER (item));
1914                         field->changed = TRUE;
1915                 }
1916
1917                 if (GTK_IS_COMBO_BOX_ENTRY (widget)) {
1918                         gchar *text;
1919
1920                         text = gtk_combo_box_get_active_text (GTK_COMBO_BOX (widget));
1921                         if (!field_choice->text ||
1922                             (field_choice->text && g_ascii_strcasecmp (field_choice->text, text) != 0)) {
1923                                 g_free (field_choice->text);
1924                                 field_choice->text = text;
1925                                 field->changed = TRUE;
1926                         }
1927                 }
1928         } else if (GTK_IS_TREE_SELECTION (widget)) {
1929                 GtkTreeSelection *selection = GTK_TREE_SELECTION (widget);
1930                 GtkTreeModel     *model;
1931                 GList            *items, *l;
1932
1933                 items = gtk_tree_selection_get_selected_rows (selection, &model);
1934                 g_list_free (field_choice->selected_items);
1935                 field_choice->selected_items = NULL;
1936
1937                 for (l = items; l && l->data; l = g_list_next (l)) {
1938                         GtkTreeIter  iter;
1939                         GtkTreePath *path = (GtkTreePath *)l->data;
1940                         gint         item;
1941
1942                         gtk_tree_model_get_iter (model, &iter, path);
1943                         gtk_tree_model_get (model, &iter, 1, &item, -1);
1944
1945                         field_choice->selected_items = g_list_prepend (field_choice->selected_items,
1946                                                                        GINT_TO_POINTER (item));
1947
1948                         gtk_tree_path_free (path);
1949                 }
1950
1951                 g_list_free (items);
1952
1953                 field->changed = TRUE;
1954         }
1955 }
1956
1957 static GtkWidget *
1958 ev_view_form_field_choice_create_widget (EvView      *view,
1959                                          EvFormField *field)
1960 {
1961         EvFormFieldChoice *field_choice = EV_FORM_FIELD_CHOICE (field);
1962         GtkWidget         *choice;
1963         GtkTreeModel      *model;
1964         gint               n_items, i;
1965         gint               selected_item = 0;
1966
1967         n_items = ev_document_forms_form_field_choice_get_n_items (EV_DOCUMENT_FORMS (view->document),
1968                                                                    field);
1969         model = GTK_TREE_MODEL (gtk_list_store_new (2, G_TYPE_STRING, G_TYPE_INT));
1970         for (i = 0; i < n_items; i++) {
1971                 GtkTreeIter iter;
1972                 gchar      *item;
1973
1974                 item = ev_document_forms_form_field_choice_get_item (EV_DOCUMENT_FORMS (view->document),
1975                                                                      field, i);
1976                 if (ev_document_forms_form_field_choice_is_item_selected (
1977                             EV_DOCUMENT_FORMS (view->document), field, i)) {
1978                         selected_item = i;
1979                         /* FIXME: we need a get_selected_items function in poppler */
1980                         field_choice->selected_items = g_list_prepend (field_choice->selected_items,
1981                                                                        GINT_TO_POINTER (i));
1982                 }
1983
1984                 if (item) {
1985                         gtk_list_store_append (GTK_LIST_STORE (model), &iter);
1986                         gtk_list_store_set (GTK_LIST_STORE (model), &iter,
1987                                             0, item,
1988                                             1, i,
1989                                             -1);
1990                         g_free (item);
1991                 }
1992         }
1993
1994         if (field_choice->type == EV_FORM_FIELD_CHOICE_LIST) {
1995                 GtkCellRenderer  *renderer;
1996                 GtkWidget        *tree_view;
1997                 GtkTreeSelection *selection;
1998
1999                 tree_view = gtk_tree_view_new_with_model (model);
2000                 gtk_tree_view_set_headers_visible (GTK_TREE_VIEW (tree_view), FALSE);
2001
2002                 selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (tree_view));
2003                 if (field_choice->multi_select) {
2004                         gtk_tree_selection_set_mode (selection, GTK_SELECTION_MULTIPLE);
2005                 }
2006
2007                 /* TODO: set selected items */
2008
2009                 renderer = gtk_cell_renderer_text_new ();
2010                 gtk_tree_view_insert_column_with_attributes (GTK_TREE_VIEW (tree_view),
2011                                                              0,
2012                                                              "choix", renderer,
2013                                                              "text", 0,
2014                                                              NULL);
2015
2016                 choice = gtk_scrolled_window_new (NULL, NULL);
2017                 gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (choice),
2018                                                 GTK_POLICY_AUTOMATIC,
2019                                                 GTK_POLICY_AUTOMATIC);
2020                 gtk_container_add (GTK_CONTAINER (choice), tree_view);
2021                 gtk_widget_show (tree_view);
2022
2023                 g_signal_connect (G_OBJECT (selection), "changed",
2024                                   G_CALLBACK (ev_view_form_field_choice_changed),
2025                                   field);
2026                 g_signal_connect_after (G_OBJECT (selection), "changed",
2027                                         G_CALLBACK (ev_view_form_field_destroy),
2028                                         view);
2029         } else if (field_choice->is_editable) { /* ComboBoxEntry */
2030                 gchar *text;
2031
2032                 choice = gtk_combo_box_entry_new_with_model (model, 0);
2033                 text = ev_document_forms_form_field_choice_get_text (EV_DOCUMENT_FORMS (view->document), field);
2034                 if (text) {
2035                         gtk_entry_set_text (GTK_ENTRY (gtk_bin_get_child (GTK_BIN (choice))), text);
2036                         g_free (text);
2037                 }
2038
2039                 g_signal_connect (G_OBJECT (choice), "changed",
2040                                   G_CALLBACK (ev_view_form_field_choice_changed),
2041                                   field);
2042                 g_signal_connect_after (G_OBJECT (GTK_BIN (choice)->child), "activate",
2043                                         G_CALLBACK (ev_view_form_field_destroy),
2044                                         view);
2045         } else { /* ComboBoxText */
2046                 GtkCellRenderer *renderer;
2047
2048                 choice = gtk_combo_box_new_with_model (model);
2049                 renderer = gtk_cell_renderer_text_new ();
2050                 gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (choice),
2051                                             renderer, TRUE);
2052                 gtk_cell_layout_set_attributes (GTK_CELL_LAYOUT (choice),
2053                                                 renderer,
2054                                                 "text", 0,
2055                                                 NULL);
2056                 gtk_combo_box_set_active (GTK_COMBO_BOX (choice), selected_item);
2057                 gtk_combo_box_popup (GTK_COMBO_BOX (choice));
2058
2059                 g_signal_connect (G_OBJECT (choice), "changed",
2060                                   G_CALLBACK (ev_view_form_field_choice_changed),
2061                                   field);
2062                 g_signal_connect_after (G_OBJECT (choice), "changed",
2063                                         G_CALLBACK (ev_view_form_field_destroy),
2064                                         view);
2065         }
2066
2067         g_object_unref (model);
2068
2069         g_object_weak_ref (G_OBJECT (choice),
2070                            (GWeakNotify)ev_view_form_field_choice_save,
2071                            view);
2072
2073         return choice;
2074 }
2075
2076 static void
2077 ev_view_handle_form_field (EvView      *view,
2078                            EvFormField *field,
2079                            gdouble      x,
2080                            gdouble      y)
2081 {
2082         GtkWidget   *field_widget = NULL;
2083         GList       *form_field_mapping;
2084         EvRectangle  field_area;
2085         GdkRectangle view_area;
2086
2087         if (field->is_read_only)
2088                 return;
2089
2090         if (EV_IS_FORM_FIELD_BUTTON (field)) {
2091                 field_widget = ev_view_form_field_button_create_widget (view, field);
2092         } else if (EV_IS_FORM_FIELD_TEXT (field)) {
2093                 field_widget = ev_view_form_field_text_create_widget (view, field);
2094         } else if (EV_IS_FORM_FIELD_CHOICE (field)) {
2095                 field_widget = ev_view_form_field_choice_create_widget (view, field);
2096         } else if (EV_IS_FORM_FIELD_SIGNATURE (field)) {
2097                 /* TODO */
2098         }
2099
2100         /* Form field doesn't require a widget */
2101         if (!field_widget)
2102                 return;
2103
2104         g_object_set_data_full (G_OBJECT (field_widget), "form-field",
2105                                 g_object_ref (field),
2106                                 (GDestroyNotify)g_object_unref);
2107
2108         form_field_mapping = ev_pixbuf_cache_get_form_field_mapping (view->pixbuf_cache, field->page);
2109         ev_form_field_mapping_get_area (form_field_mapping, field, &field_area);
2110
2111         doc_rect_to_view_rect (view, field->page, &field_area, &view_area);
2112         view_area.x -= view->scroll_x;
2113         view_area.y -= view->scroll_y;
2114
2115         gtk_layout_put (GTK_LAYOUT (view), field_widget, view_area.x, view_area.y);
2116         gtk_widget_show (field_widget);
2117         gtk_widget_grab_focus (field_widget);
2118 }
2119
2120 /*** GtkWidget implementation ***/
2121
2122 static void
2123 ev_view_size_request_continuous_dual_page (EvView         *view,
2124                                            GtkRequisition *requisition)
2125 {
2126         int max_width;
2127         gint n_pages;
2128         GtkBorder border;
2129
2130         ev_page_cache_get_max_width (view->page_cache, view->rotation,
2131                                      view->scale, &max_width);
2132         compute_border (view, max_width, max_width, &border);
2133
2134         n_pages = ev_page_cache_get_n_pages (view->page_cache) + 1;
2135
2136         requisition->width = (max_width + border.left + border.right) * 2 + (view->spacing * 3);
2137         get_page_y_offset (view, n_pages, view->scale, &requisition->height);
2138
2139         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
2140                 requisition->width = 1;
2141         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
2142                 requisition->width = 1;
2143                 /* FIXME: This could actually be set on one page docs or docs
2144                  * with a strange aspect ratio. */
2145                 /* requisition->height = 1;*/
2146         }
2147 }
2148
2149 static void
2150 ev_view_size_request_continuous (EvView         *view,
2151                                  GtkRequisition *requisition)
2152 {
2153         int max_width;
2154         int n_pages;
2155         GtkBorder border;
2156
2157
2158         ev_page_cache_get_max_width (view->page_cache, view->rotation,
2159                                      view->scale, &max_width);
2160         n_pages = ev_page_cache_get_n_pages (view->page_cache);
2161         compute_border (view, max_width, max_width, &border);
2162
2163         requisition->width = max_width + (view->spacing * 2) + border.left + border.right;
2164         get_page_y_offset (view, n_pages, view->scale, &requisition->height);
2165
2166         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
2167                 requisition->width = 1;
2168         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
2169                 requisition->width = 1;
2170                 /* FIXME: This could actually be set on one page docs or docs
2171                  * with a strange aspect ratio. */
2172                 /* requisition->height = 1;*/
2173         }
2174 }
2175
2176 static void
2177 ev_view_size_request_dual_page (EvView         *view,
2178                                 GtkRequisition *requisition)
2179 {
2180         GtkBorder border;
2181         gint width, height;
2182
2183         /* Find the largest of the two. */
2184         ev_page_cache_get_size (view->page_cache,
2185                                 view->current_page,
2186                                 view->rotation,
2187                                 view->scale,
2188                                 &width, &height);
2189         if (view->current_page + 1 < ev_page_cache_get_n_pages (view->page_cache)) {
2190                 gint width_2, height_2;
2191                 ev_page_cache_get_size (view->page_cache,
2192                                         view->current_page + 1,
2193                                         view->rotation,
2194                                         view->scale,
2195                                         &width_2, &height_2);
2196                 if (width_2 > width) {
2197                         width = width_2;
2198                         height = height_2;
2199                 }
2200         }
2201         compute_border (view, width, height, &border);
2202
2203         requisition->width = ((width + border.left + border.right) * 2) +
2204                 (view->spacing * 3);
2205         requisition->height = (height + border.top + border.bottom) +
2206                 (view->spacing * 2);
2207
2208         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
2209                 requisition->width = 1;
2210         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
2211                 requisition->width = 1;
2212                 requisition->height = 1;
2213         }
2214 }
2215
2216 static void
2217 ev_view_size_request_single_page (EvView         *view,
2218                                   GtkRequisition *requisition)
2219 {
2220         GtkBorder border;
2221         gint width, height;
2222
2223         ev_page_cache_get_size (view->page_cache,
2224                                 view->current_page,
2225                                 view->rotation,
2226                                 view->scale,
2227                                 &width, &height);
2228         compute_border (view, width, height, &border);
2229
2230         requisition->width = width + border.left + border.right + (2 * view->spacing);
2231         requisition->height = height + border.top + border.bottom + (2 * view->spacing);
2232
2233         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
2234                 requisition->width = 1;
2235                 requisition->height = height + border.top + border.bottom + (2 * view->spacing);
2236         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
2237                 requisition->width = 1;
2238                 requisition->height = 1;
2239         }
2240 }
2241
2242 static void
2243 ev_view_size_request (GtkWidget      *widget,
2244                       GtkRequisition *requisition)
2245 {
2246         EvView *view = EV_VIEW (widget);
2247
2248         if (view->document == NULL) {
2249                 requisition->width = 1;
2250                 requisition->height = 1;
2251                 return;
2252         }
2253
2254         if (view->presentation) {
2255                 requisition->width = 1;
2256                 requisition->height = 1;
2257                 return;
2258         }
2259
2260         if (view->continuous && view->dual_page)
2261                 ev_view_size_request_continuous_dual_page (view, requisition);
2262         else if (view->continuous)
2263                 ev_view_size_request_continuous (view, requisition);
2264         else if (view->dual_page)
2265                 ev_view_size_request_dual_page (view, requisition);
2266         else
2267                 ev_view_size_request_single_page (view, requisition);
2268 }
2269
2270 static void
2271 ev_view_size_allocate (GtkWidget      *widget,
2272                        GtkAllocation  *allocation)
2273 {
2274         EvView *view = EV_VIEW (widget);
2275         GList  *children, *l;
2276
2277         GTK_WIDGET_CLASS (ev_view_parent_class)->size_allocate (widget, allocation);
2278
2279         if (view->sizing_mode == EV_SIZING_FIT_WIDTH ||
2280             view->sizing_mode == EV_SIZING_BEST_FIT) {
2281
2282                 g_signal_emit (view, signals[SIGNAL_ZOOM_INVALID], 0);
2283
2284                 ev_view_size_request (widget, &widget->requisition);
2285         }
2286
2287         view_set_adjustment_values (view, GTK_ORIENTATION_HORIZONTAL);
2288         view_set_adjustment_values (view, GTK_ORIENTATION_VERTICAL);
2289
2290         if (view->document)
2291                 view_update_range_and_current_page (view);
2292
2293         view->pending_scroll = SCROLL_TO_KEEP_POSITION;
2294         view->pending_resize = FALSE;
2295
2296         children = gtk_container_get_children (GTK_CONTAINER (widget));
2297         for (l = children; l && l->data; l = g_list_next (l)) {
2298                 EvFormField   *field;
2299                 EvRectangle    field_area;
2300                 GdkRectangle   view_area;
2301                 GList         *form_field_mapping;
2302                 GtkAllocation  child_allocation;
2303                 GtkRequisition child_requisition;
2304                 GtkWidget     *child = (GtkWidget *)l->data;
2305
2306                 field = g_object_get_data (G_OBJECT (child), "form-field");
2307                 if (!field)
2308                         continue;
2309
2310                 form_field_mapping = ev_pixbuf_cache_get_form_field_mapping (view->pixbuf_cache,
2311                                                                              field->page);
2312                 ev_form_field_mapping_get_area (form_field_mapping, field, &field_area);
2313
2314                 doc_rect_to_view_rect (view, field->page, &field_area, &view_area);
2315                 view_area.x -= view->scroll_x;
2316                 view_area.y -= view->scroll_y;
2317
2318                 gtk_widget_size_request (child, &child_requisition);
2319                 if (child_requisition.width != view_area.width ||
2320                     child_requisition.height != view_area.height)
2321                         gtk_widget_set_size_request (child, view_area.width, view_area.height);
2322
2323                 gtk_container_child_get (GTK_CONTAINER (widget),
2324                                          child,
2325                                          "x", &child_allocation.x,
2326                                          "y", &child_allocation.y,
2327                                          NULL);
2328                 if (child_allocation.x != view_area.x ||
2329                     child_allocation.y != view_area.y) {
2330                         gtk_layout_move (GTK_LAYOUT (widget), child, view_area.x, view_area.y);
2331                 }
2332         }
2333         g_list_free (children);
2334 }
2335
2336 static void
2337 ev_view_realize (GtkWidget *widget)
2338 {
2339         EvView *view = EV_VIEW (widget);
2340
2341         if (GTK_WIDGET_CLASS (ev_view_parent_class)->realize)
2342                 (* GTK_WIDGET_CLASS (ev_view_parent_class)->realize) (widget);
2343
2344         gdk_window_set_events (view->layout.bin_window,
2345                                (gdk_window_get_events (view->layout.bin_window) |
2346                                 GDK_EXPOSURE_MASK |
2347                                 GDK_BUTTON_PRESS_MASK |
2348                                 GDK_BUTTON_RELEASE_MASK |
2349                                 GDK_SCROLL_MASK |
2350                                 GDK_KEY_PRESS_MASK |
2351                                 GDK_POINTER_MOTION_MASK |
2352                                 GDK_POINTER_MOTION_HINT_MASK |
2353                                 GDK_ENTER_NOTIFY_MASK |
2354                                 GDK_LEAVE_NOTIFY_MASK));
2355
2356         if (view->presentation)
2357                 gdk_window_set_background (view->layout.bin_window, &widget->style->black);
2358         else
2359                 gdk_window_set_background (view->layout.bin_window, &widget->style->mid [GTK_STATE_NORMAL]);
2360 }
2361
2362 static gboolean
2363 ev_view_scroll_event (GtkWidget *widget, GdkEventScroll *event)
2364 {
2365         EvView *view = EV_VIEW (widget);
2366         guint state;
2367
2368         state = event->state & gtk_accelerator_get_default_mod_mask ();
2369
2370         if (state == GDK_CONTROL_MASK && view->presentation == FALSE) {
2371                 ev_view_set_sizing_mode (view, EV_SIZING_FREE);
2372
2373                 if (event->direction == GDK_SCROLL_UP ||
2374                     event->direction == GDK_SCROLL_LEFT) {
2375                         if (ev_view_can_zoom_in (view)) {
2376                                 ev_view_zoom_in (view);
2377                         }
2378                 } else {
2379                         if (ev_view_can_zoom_out (view)) {
2380                                 ev_view_zoom_out (view);
2381                         }
2382                 }
2383
2384                 return TRUE;
2385         }
2386
2387         view->jump_to_find_result = FALSE;
2388
2389         /* Shift+Wheel scrolls the in the perpendicular direction */
2390         if (state & GDK_SHIFT_MASK) {
2391                 if (event->direction == GDK_SCROLL_UP)
2392                         event->direction = GDK_SCROLL_LEFT;
2393                 else if (event->direction == GDK_SCROLL_LEFT)
2394                         event->direction = GDK_SCROLL_UP;
2395                 else if (event->direction == GDK_SCROLL_DOWN)
2396                         event->direction = GDK_SCROLL_RIGHT;
2397                 else if (event->direction == GDK_SCROLL_RIGHT)
2398                         event->direction = GDK_SCROLL_DOWN;
2399
2400                 event->state &= ~GDK_SHIFT_MASK;
2401                 state &= ~GDK_SHIFT_MASK;
2402         }
2403
2404         if (state == 0 && view->presentation) {
2405                 switch (event->direction) {
2406                         case GDK_SCROLL_DOWN:
2407                         case GDK_SCROLL_RIGHT:
2408                                 ev_view_next_page (view);
2409                                 break;
2410                         case GDK_SCROLL_UP:
2411                         case GDK_SCROLL_LEFT:
2412                                 ev_view_previous_page (view);
2413                                 break;
2414                 }
2415
2416                 return TRUE;
2417         }
2418
2419         return FALSE;
2420 }
2421
2422 static EvViewSelection *
2423 find_selection_for_page (EvView *view,
2424                          gint    page)
2425 {
2426         GList *list;
2427
2428         for (list = view->selection_info.selections; list != NULL; list = list->next) {
2429                 EvViewSelection *selection;
2430
2431                 selection = (EvViewSelection *) list->data;
2432
2433                 if (selection->page == page)
2434                         return selection;
2435         }
2436
2437         return NULL;
2438 }
2439
2440 static void
2441 draw_end_presentation_page (EvView       *view,
2442                             GdkRectangle *page_area)
2443 {
2444         PangoLayout *layout;
2445         PangoFontDescription *font_desc;
2446         gchar *markup;
2447         const gchar *text = _("End of presentation. Press Escape to exit.");
2448
2449         if (view->presentation_state != EV_PRESENTATION_END)
2450                 return;
2451
2452         layout = gtk_widget_create_pango_layout (GTK_WIDGET (view), NULL);
2453         markup = g_strdup_printf ("<span foreground=\"white\">%s</span>", text);
2454         pango_layout_set_markup (layout, markup, -1);
2455         g_free (markup);
2456
2457         font_desc = pango_font_description_new ();
2458         pango_font_description_set_size (font_desc, 16 * PANGO_SCALE);
2459         pango_layout_set_font_description (layout, font_desc);
2460
2461         gtk_paint_layout (GTK_WIDGET (view)->style,
2462                           view->layout.bin_window,
2463                           GTK_WIDGET_STATE (view),
2464                           FALSE,
2465                           page_area,
2466                           GTK_WIDGET (view),
2467                           NULL,
2468                           page_area->x + 15,
2469                           page_area->y + 15,
2470                           layout);
2471
2472         pango_font_description_free (font_desc);
2473         g_object_unref (layout);
2474 }
2475
2476 static gboolean
2477 ev_view_expose_event (GtkWidget      *widget,
2478                       GdkEventExpose *event)
2479 {
2480         EvView  *view = EV_VIEW (widget);
2481         cairo_t *cr;
2482         gint     i;
2483
2484         if (view->animation) {
2485                 GdkRectangle page_area;
2486                 GtkBorder    border;
2487
2488                 if (get_page_extents (view, view->current_page, &page_area, &border)) {
2489                         cr = gdk_cairo_create (view->layout.bin_window);
2490
2491                         /* normalize to x=0, y=0 */
2492                         cairo_translate (cr, page_area.x, page_area.y);
2493                         page_area.x = page_area.y = 0;
2494
2495                         ev_transition_animation_paint (view->animation, cr, page_area);
2496                         cairo_destroy (cr);
2497                 }
2498
2499                 return TRUE;
2500         }
2501
2502         if (view->presentation) {
2503                 switch (view->presentation_state) {
2504                         case EV_PRESENTATION_END: {
2505                                 GdkRectangle area = {0};
2506
2507                                 area.width = widget->allocation.width;
2508                                 area.height = widget->allocation.height;
2509
2510                                 draw_end_presentation_page (view, &area);
2511                         }
2512                                 return FALSE;
2513                         case EV_PRESENTATION_BLACK:
2514                         case EV_PRESENTATION_WHITE:
2515                                 return FALSE;
2516                         case EV_PRESENTATION_NORMAL:
2517                         default:
2518                                 break;
2519                 }
2520         } else if (view->loading) {
2521                 GdkRectangle area = {0};
2522
2523                 area.width = widget->allocation.width;
2524                 area.height = widget->allocation.height;
2525
2526                 draw_loading_text (view,
2527                                    &area,
2528                                    &(event->area));
2529         }
2530
2531         if (view->document == NULL)
2532                 return FALSE;
2533
2534         cr = gdk_cairo_create (view->layout.bin_window);
2535
2536         for (i = view->start_page; i <= view->end_page; i++) {
2537                 GdkRectangle page_area;
2538                 GtkBorder border;
2539                 gboolean page_ready = TRUE;
2540
2541                 if (!get_page_extents (view, i, &page_area, &border))
2542                         continue;
2543
2544                 page_area.x -= view->scroll_x;
2545                 page_area.y -= view->scroll_y;
2546
2547                 draw_one_page (view, i, cr, &page_area, &border, &(event->area), &page_ready);
2548
2549                 if (page_ready && EV_IS_DOCUMENT_FIND (view->document) && view->highlight_find_results)
2550                         highlight_find_results (view, i);
2551         }
2552
2553         cairo_destroy (cr);
2554
2555         if (GTK_WIDGET_CLASS (ev_view_parent_class)->expose_event)
2556                 (* GTK_WIDGET_CLASS (ev_view_parent_class)->expose_event) (widget, event);
2557
2558         return FALSE;
2559 }
2560
2561 static gboolean
2562 ev_view_do_popup_menu (EvView *view,
2563                        gdouble x,
2564                        gdouble y)
2565 {
2566         EvLink  *link;
2567         EvImage *image;
2568
2569         image = ev_view_get_image_at_location (view, x, y);
2570         if (image) {
2571                 g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, image);
2572                 return TRUE;
2573         }
2574
2575         link = ev_view_get_link_at_location (view, x, y);
2576         if (link) {
2577                 g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, link);
2578                 return TRUE;
2579         }
2580
2581         g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, NULL);
2582
2583         return TRUE;
2584 }
2585
2586 static gboolean
2587 ev_view_popup_menu (GtkWidget *widget)
2588 {
2589         gint x, y;
2590
2591         gtk_widget_get_pointer (widget, &x, &y);
2592         return ev_view_do_popup_menu (EV_VIEW (widget), x, y);
2593 }
2594
2595 #if GTK_CHECK_VERSION (2, 11, 7)
2596 static void
2597 get_link_area (EvView       *view,
2598                gint          x,
2599                gint          y,
2600                EvLink       *link,
2601                GdkRectangle *area)
2602 {
2603         EvRectangle  ev_rect;
2604         GList       *link_mapping;
2605         gint         page;
2606         gint         x_offset = 0, y_offset = 0;
2607
2608         x += view->scroll_x;
2609         y += view->scroll_y;
2610
2611         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
2612
2613         link_mapping = ev_pixbuf_cache_get_link_mapping (view->pixbuf_cache, page);
2614         ev_link_mapping_get_area (link_mapping, link, &ev_rect);
2615
2616         doc_rect_to_view_rect (view, page, &ev_rect, area);
2617         area->y -= view->scroll_y ;
2618 }
2619
2620 static gboolean
2621 ev_view_query_tooltip (GtkWidget         *widget,
2622                        gint               x,
2623                        gint               y,
2624                        gboolean           keyboard_tip,
2625                        GtkTooltip        *tooltip)
2626 {
2627         EvView *view = EV_VIEW (widget);
2628         EvLink *link;
2629         gchar  *text;
2630
2631         link = ev_view_get_link_at_location (view, x, y);
2632         if (!link)
2633                 return FALSE;
2634
2635         text = tip_from_link (view, link);
2636         if (text && g_utf8_validate (text, -1, NULL)) {
2637                 GdkRectangle link_area;
2638
2639                 get_link_area (view, x, y, link, &link_area);
2640                 gtk_tooltip_set_text (tooltip, text);
2641                 gtk_tooltip_set_tip_area (tooltip, &link_area);
2642         }
2643         g_free (text);
2644
2645         return TRUE;
2646 }
2647 #endif /* GTK_CHECK_VERSION (2, 11, 7) */
2648
2649 static void
2650 start_selection_for_event (EvView         *view,
2651                            GdkEventButton *event)
2652 {
2653         EvSelectionStyle style;
2654
2655         clear_selection (view);
2656
2657         view->selection_info.start.x = event->x + view->scroll_x;
2658         view->selection_info.start.y = event->y + view->scroll_y;
2659
2660         switch (event->type) {
2661                 case GDK_2BUTTON_PRESS:
2662                         style = EV_SELECTION_STYLE_WORD;
2663                         break;
2664                 case GDK_3BUTTON_PRESS:
2665                         style = EV_SELECTION_STYLE_LINE;
2666                         break;
2667                 default:
2668                         style = EV_SELECTION_STYLE_GLYPH;
2669                         break;
2670         }
2671
2672         view->selection_info.style = style;
2673 }
2674
2675 static gboolean
2676 ev_view_button_press_event (GtkWidget      *widget,
2677                             GdkEventButton *event)
2678 {
2679         EvView *view = EV_VIEW (widget);
2680
2681         if (!view->document)
2682                 return FALSE;
2683
2684         if (!GTK_WIDGET_HAS_FOCUS (widget)) {
2685                 gtk_widget_grab_focus (widget);
2686         }
2687
2688         view->pressed_button = event->button;
2689         view->selection_info.in_drag = FALSE;
2690
2691         switch (event->button) {
2692                 case 1: {
2693
2694                         if (view->scroll_info.autoscrolling == TRUE) {
2695                                 view->scroll_info.autoscrolling = FALSE;
2696                                 return TRUE;
2697                         }
2698
2699                         EvImage *image;
2700                         EvFormField *field;
2701
2702                         if (EV_IS_SELECTION (view->document) && view->selection_info.selections) {
2703                                 if (event->type == GDK_3BUTTON_PRESS) {
2704                                         start_selection_for_event (view, event);
2705                                 } else if (location_in_selected_text (view,
2706                                                                event->x + view->scroll_x,
2707                                                                event->y + view->scroll_y)) {
2708                                         view->selection_info.in_drag = TRUE;
2709                                 } else {
2710                                         start_selection_for_event (view, event);
2711                                 }
2712
2713                                 gtk_widget_queue_draw (widget);
2714                         } else if ((field = ev_view_get_form_field_at_location (view, event->x, event->y))) {
2715                                 ev_view_remove_all (view);
2716                                 ev_view_handle_form_field (view, field, event->x, event->y);
2717                         } else if (!location_in_text (view, event->x + view->scroll_x, event->y + view->scroll_y) &&
2718                                    (image = ev_view_get_image_at_location (view, event->x, event->y))) {
2719                                 if (view->image_dnd_info.image)
2720                                         g_object_unref (view->image_dnd_info.image);
2721                                 view->image_dnd_info.image = g_object_ref (image);
2722                                 view->image_dnd_info.in_drag = TRUE;
2723
2724                                 view->image_dnd_info.start.x = event->x + view->scroll_x;
2725                                 view->image_dnd_info.start.y = event->y + view->scroll_y;
2726                         } else {
2727                                 ev_view_remove_all (view);
2728
2729                                 if (EV_IS_SELECTION (view->document))
2730                                         start_selection_for_event (view, event);
2731                         }
2732                 }
2733                         return TRUE;
2734                 case 2:
2735                         /* use root coordinates as reference point because
2736                          * scrolling changes window relative coordinates */
2737                         if (view->scroll_info.autoscrolling == TRUE) {
2738                                 view->scroll_info.autoscrolling = FALSE;
2739                                 return TRUE;
2740                         }
2741                         view->drag_info.start.x = event->x_root;
2742                         view->drag_info.start.y = event->y_root;
2743                         view->drag_info.hadj = gtk_adjustment_get_value (view->hadjustment);
2744                         view->drag_info.vadj = gtk_adjustment_get_value (view->vadjustment);
2745
2746                         ev_view_set_cursor (view, EV_VIEW_CURSOR_DRAG);
2747
2748                         return TRUE;
2749                 case 3:
2750                         if (!view->scroll_info.autoscrolling)
2751                                 view->scroll_info.start_y = event->y;
2752                         return ev_view_do_popup_menu (view, event->x, event->y);
2753         }
2754
2755         return FALSE;
2756 }
2757
2758 static void
2759 ev_view_remove_all (EvView *view)
2760 {
2761         GList *children, *child;
2762
2763         children = gtk_container_get_children (GTK_CONTAINER (view));
2764         for (child = children; child && child->data; child = g_list_next (child)) {
2765                 gtk_container_remove (GTK_CONTAINER (view),
2766                                       GTK_WIDGET (child->data));
2767         }
2768         g_list_free (children);
2769 }
2770
2771 /*** Drag and Drop ***/
2772 static void
2773 ev_view_drag_data_get (GtkWidget        *widget,
2774                        GdkDragContext   *context,
2775                        GtkSelectionData *selection_data,
2776                        guint             info,
2777                        guint             time)
2778 {
2779         EvView *view = EV_VIEW (widget);
2780
2781         switch (info) {
2782                 case TARGET_DND_TEXT:
2783                         if (EV_IS_SELECTION (view->document) &&
2784                             view->selection_info.selections) {
2785                                 gchar *text;
2786
2787                                 text = get_selected_text (view);
2788                                 gtk_selection_data_set_text (selection_data,
2789                                                              text,
2790                                                              strlen (text));
2791                                 g_free (text);
2792                         }
2793                         break;
2794                 case TARGET_DND_IMAGE:
2795                         if (view->image_dnd_info.image) {
2796                                 GdkPixbuf *pixbuf;
2797
2798                                 ev_document_doc_mutex_lock ();
2799                                 pixbuf = ev_document_images_get_image (EV_DOCUMENT_IMAGES (view->document),
2800                                                                        view->image_dnd_info.image);
2801                                 ev_document_doc_mutex_unlock ();
2802
2803                                 gtk_selection_data_set_pixbuf (selection_data, pixbuf);
2804                                 g_object_unref (pixbuf);
2805                         }
2806                         break;
2807                 case TARGET_DND_URI:
2808                         if (view->image_dnd_info.image) {
2809                                 GdkPixbuf   *pixbuf;
2810                                 const gchar *tmp_uri;
2811                                 gchar      **uris;
2812
2813                                 ev_document_doc_mutex_lock ();
2814                                 pixbuf = ev_document_images_get_image (EV_DOCUMENT_IMAGES (view->document),
2815                                                                        view->image_dnd_info.image);
2816                                 ev_document_doc_mutex_unlock ();
2817
2818                                 tmp_uri = ev_image_save_tmp (view->image_dnd_info.image, pixbuf);
2819                                 g_object_unref (pixbuf);
2820
2821                                 uris = g_new0 (gchar *, 2);
2822                                 uris[0] = (gchar *)tmp_uri;
2823
2824                                 gtk_selection_data_set_uris (selection_data, uris);
2825
2826                                 /* g_free instead of g_strfreev since tmp_uri is const */
2827                                 g_free (uris);
2828                         }
2829         }
2830 }
2831
2832 static gboolean
2833 ev_view_drag_motion (GtkWidget      *widget,
2834                      GdkDragContext *context,
2835                      gint            x,
2836                      gint            y,
2837                      guint           time)
2838 {
2839         if (gtk_drag_get_source_widget (context) == widget)
2840                 gdk_drag_status (context, 0, time);
2841         else
2842                 gdk_drag_status (context, context->suggested_action, time);
2843
2844         return TRUE;
2845 }
2846
2847 static void
2848 ev_view_drag_data_received (GtkWidget          *widget,
2849                             GdkDragContext     *context,
2850                             gint                x,
2851                             gint                y,
2852                             GtkSelectionData   *selection_data,
2853                             guint               info,
2854                             guint               time)
2855 {
2856         gchar  **uris;
2857         gint     i = 0;
2858         GSList  *uri_list = NULL;
2859
2860         uris = gtk_selection_data_get_uris (selection_data);
2861         if (!uris) {
2862                 gtk_drag_finish (context, FALSE, FALSE, time);
2863                 return;
2864         }
2865
2866         for (i = 0; uris[i]; i++) {
2867                 uri_list = g_slist_prepend (uri_list, (gpointer) uris[i]);
2868         }
2869
2870         ev_application_open_uri_list (EV_APP, uri_list,
2871                                       gtk_widget_get_screen (widget),
2872                                       0);
2873         gtk_drag_finish (context, TRUE, FALSE, time);
2874
2875         g_strfreev (uris);
2876         g_slist_free (uri_list);
2877 }
2878
2879
2880 static gboolean
2881 selection_update_idle_cb (EvView *view)
2882 {
2883         compute_selections (view,
2884                             view->selection_info.style,
2885                             &view->selection_info.start,
2886                             &view->motion);
2887         view->selection_update_id = 0;
2888         return FALSE;
2889 }
2890
2891 static gboolean
2892 selection_scroll_timeout_cb (EvView *view)
2893 {
2894         gint x, y, shift = 0;
2895         GtkWidget *widget = GTK_WIDGET (view);
2896
2897         gtk_widget_get_pointer (widget, &x, &y);
2898
2899         if (y > widget->allocation.height) {
2900                 shift = (y - widget->allocation.height) / 2;
2901         } else if (y < 0) {
2902                 shift = y / 2;
2903         }
2904
2905         if (shift)
2906                 gtk_adjustment_set_value (view->vadjustment,
2907                                           CLAMP (view->vadjustment->value + shift,
2908                                           view->vadjustment->lower,
2909                                           view->vadjustment->upper -
2910                                           view->vadjustment->page_size));
2911
2912         if (x > widget->allocation.width) {
2913                 shift = (x - widget->allocation.width) / 2;
2914         } else if (x < 0) {
2915                 shift = x / 2;
2916         }
2917
2918         if (shift)
2919                 gtk_adjustment_set_value (view->hadjustment,
2920                                           CLAMP (view->hadjustment->value + shift,
2921                                           view->hadjustment->lower,
2922                                           view->hadjustment->upper -
2923                                           view->hadjustment->page_size));
2924
2925         return TRUE;
2926 }
2927
2928 static gboolean
2929 ev_view_drag_update_momentum (EvView *view)
2930 {
2931         int i;
2932         if (!view->drag_info.in_drag)
2933                 return FALSE;
2934
2935         for (i = DRAG_HISTORY - 1; i > 0; i--) {
2936                 view->drag_info.buffer[i].x = view->drag_info.buffer[i-1].x;
2937                 view->drag_info.buffer[i].y = view->drag_info.buffer[i-1].y;
2938         }
2939
2940         /* Momentum is a moving average of 10ms granularity over
2941          * the last 100ms with each 10ms stored in buffer.
2942          */
2943
2944         view->drag_info.momentum.x = (view->drag_info.buffer[DRAG_HISTORY - 1].x - view->drag_info.buffer[0].x);
2945         view->drag_info.momentum.y = (view->drag_info.buffer[DRAG_HISTORY - 1].y - view->drag_info.buffer[0].y);
2946
2947         return TRUE;
2948 }
2949
2950 static gboolean
2951 ev_view_scroll_drag_release (EvView *view)
2952 {
2953         gdouble dhadj_value, dvadj_value;
2954         gdouble oldhadjustment, oldvadjustment;
2955
2956         view->drag_info.momentum.x /= 1.2;
2957         view->drag_info.momentum.y /= 1.2; /* Alter these constants to change "friction" */
2958
2959         dhadj_value = view->hadjustment->page_size *
2960                       (gdouble)view->drag_info.momentum.x / GTK_WIDGET (view)->allocation.width;
2961         dvadj_value = view->vadjustment->page_size *
2962                       (gdouble)view->drag_info.momentum.y / GTK_WIDGET (view)->allocation.height;
2963
2964         oldhadjustment = gtk_adjustment_get_value (view->hadjustment);
2965         oldvadjustment = gtk_adjustment_get_value (view->vadjustment);
2966
2967         if (((oldhadjustment + dhadj_value) > (view->hadjustment->upper - view->hadjustment->page_size)) ||
2968            ((oldhadjustment + dhadj_value) < 0))
2969                 view->drag_info.momentum.x *= -0.5; /* 0.5 rather than 1 means the edges absorb some momentum */
2970         if (((oldvadjustment + dvadj_value) > (view->vadjustment->upper - view->vadjustment->page_size)) ||
2971            ((oldvadjustment + dvadj_value) < 0))
2972                 view->drag_info.momentum.y *= -0.5;
2973
2974         gtk_adjustment_set_value (view->hadjustment,
2975                                 MIN (oldhadjustment + dhadj_value,
2976                                 view->hadjustment->upper - view->hadjustment->page_size));
2977         gtk_adjustment_set_value (view->vadjustment,
2978                                 MIN (oldvadjustment + dvadj_value,
2979                                 view->vadjustment->upper - view->vadjustment->page_size));
2980
2981         if (((view->drag_info.momentum.x < 1) && (view->drag_info.momentum.x > -1)) &&
2982            ((view->drag_info.momentum.y < 1) && (view->drag_info.momentum.y > -1)))
2983                 return FALSE;
2984         else
2985                 return TRUE;
2986 }
2987
2988 static gboolean
2989 ev_view_motion_notify_event (GtkWidget      *widget,
2990                              GdkEventMotion *event)
2991 {
2992         EvView *view = EV_VIEW (widget);
2993         gint x, y;
2994
2995         if (!view->document)
2996                 return FALSE;
2997
2998
2999         if (event->is_hint || event->window != view->layout.bin_window) {
3000             gtk_widget_get_pointer (widget, &x, &y);
3001         } else {
3002             x = event->x;
3003             y = event->y;
3004         }
3005
3006         if (view->scroll_info.autoscrolling) {
3007                 view->scroll_info.last_y = y;
3008         }
3009
3010         if (view->selection_info.in_drag) {
3011                 if (gtk_drag_check_threshold (widget,
3012                                               view->selection_info.start.x,
3013                                               view->selection_info.start.y,
3014                                               x, y)) {
3015                         GtkTargetList *target_list = gtk_target_list_new (NULL, 0);
3016
3017                         gtk_target_list_add_text_targets (target_list, TARGET_DND_TEXT);
3018
3019                         gtk_drag_begin (widget, target_list,
3020                                         GDK_ACTION_COPY,
3021                                         1, (GdkEvent *)event);
3022
3023                         view->selection_info.in_drag = FALSE;
3024
3025                         gtk_target_list_unref (target_list);
3026
3027                         return TRUE;
3028                 }
3029         } else if (view->image_dnd_info.in_drag) {
3030                 if (gtk_drag_check_threshold (widget,
3031                                               view->selection_info.start.x,
3032                                               view->selection_info.start.y,
3033                                               x, y)) {
3034                         GtkTargetList *target_list = gtk_target_list_new (NULL, 0);
3035
3036                         gtk_target_list_add_uri_targets (target_list, TARGET_DND_URI);
3037                         gtk_target_list_add_image_targets (target_list, TARGET_DND_IMAGE, TRUE);
3038
3039                         gtk_drag_begin (widget, target_list,
3040                                         GDK_ACTION_COPY,
3041                                         1, (GdkEvent *)event);
3042
3043                         view->image_dnd_info.in_drag = FALSE;
3044
3045                         gtk_target_list_unref (target_list);
3046
3047                         return TRUE;
3048                 }
3049         }
3050
3051         /* For the Evince 0.4.x release, we limit selection to un-rotated
3052          * documents only.
3053          */
3054         if (view->pressed_button == 1 && view->rotation == 0) {
3055
3056                 /* Schedule timeout to scroll during selection and additionally
3057                  * scroll once to allow arbitrary speed. */
3058                 if (!view->selection_scroll_id)
3059                     view->selection_scroll_id = g_timeout_add (SCROLL_TIME, (GSourceFunc)selection_scroll_timeout_cb, view);
3060                 else
3061                     selection_scroll_timeout_cb (view);
3062
3063                 view->selection_info.in_selection = TRUE;
3064                 view->motion.x = x + view->scroll_x;
3065                 view->motion.y = y + view->scroll_y;
3066
3067                 /* Queue an idle to handle the motion.  We do this because
3068                  * handling any selection events in the motion could be slower
3069                  * than new motion events reach us.  We always put it in the
3070                  * idle to make sure we catch up and don't visibly lag the
3071                  * mouse. */
3072                 if (!view->selection_update_id)
3073                         view->selection_update_id = g_idle_add ((GSourceFunc)selection_update_idle_cb, view);
3074
3075                 return TRUE;
3076         } else if (view->pressed_button == 2) {
3077                 if (!view->drag_info.in_drag) {
3078                         gboolean start;
3079                         int i;
3080
3081                         start = gtk_drag_check_threshold (widget,
3082                                                           view->drag_info.start.x,
3083                                                           view->drag_info.start.y,
3084                                                           event->x_root,
3085                                                           event->y_root);
3086                         view->drag_info.in_drag = start;
3087                         view->drag_info.drag_timeout_id = g_timeout_add (10,
3088                                 (GSourceFunc)ev_view_drag_update_momentum, view);
3089                         /* Set 100 to choose how long it takes to build up momentum */
3090                         /* Clear out previous momentum info: */
3091                         for (i = 0; i < DRAG_HISTORY; i++) {
3092                                 view->drag_info.buffer[i].x = event->x;
3093                                 view->drag_info.buffer[i].y = event->y;
3094                         }
3095                         view->drag_info.momentum.x = 0;
3096                         view->drag_info.momentum.y = 0;
3097                 }
3098
3099                 if (view->drag_info.in_drag) {
3100                         int dx, dy;
3101                         gdouble dhadj_value, dvadj_value;
3102
3103                         view->drag_info.buffer[0].x = event->x;
3104                         view->drag_info.buffer[0].y = event->y;
3105
3106                         dx = event->x_root - view->drag_info.start.x;
3107                         dy = event->y_root - view->drag_info.start.y;
3108
3109                         dhadj_value = view->hadjustment->page_size *
3110                                       (gdouble)dx / widget->allocation.width;
3111                         dvadj_value = view->vadjustment->page_size *
3112                                       (gdouble)dy / widget->allocation.height;
3113
3114                         /* clamp scrolling to visible area */
3115                         gtk_adjustment_set_value (view->hadjustment,
3116                                                   MIN(view->drag_info.hadj - dhadj_value,
3117                                                       view->hadjustment->upper -
3118                                                       view->hadjustment->page_size));
3119                         gtk_adjustment_set_value (view->vadjustment,
3120                                                   MIN(view->drag_info.vadj - dvadj_value,
3121                                                       view->vadjustment->upper -
3122                                                       view->vadjustment->page_size));
3123
3124                         return TRUE;
3125                 }
3126         } else if (view->pressed_button <= 0) {
3127                 ev_view_handle_cursor_over_xy (view, x, y);
3128                 return TRUE;
3129         }
3130
3131         return FALSE;
3132 }
3133
3134 static gboolean
3135 ev_view_button_release_event (GtkWidget      *widget,
3136                               GdkEventButton *event)
3137 {
3138         EvView *view = EV_VIEW (widget);
3139         EvLink *link = NULL;
3140
3141         view->drag_info.in_drag = FALSE;
3142         view->image_dnd_info.in_drag = FALSE;
3143
3144         view->drag_info.release_timeout_id = g_timeout_add (20,
3145                         (GSourceFunc)ev_view_scroll_drag_release, view);
3146
3147         if (view->pressed_button == 2) {
3148                 ev_view_handle_cursor_over_xy (view, event->x, event->y);
3149         }
3150
3151         if (view->document && view->pressed_button != 3) {
3152                 link = ev_view_get_link_at_location (view, event->x, event->y);
3153         }
3154
3155         view->pressed_button = -1;
3156
3157         if (view->selection_scroll_id) {
3158             g_source_remove (view->selection_scroll_id);
3159             view->selection_scroll_id = 0;
3160         }
3161         if (view->selection_update_id) {
3162             g_source_remove (view->selection_update_id);
3163             view->selection_update_id = 0;
3164         }
3165
3166         if (!view->selection_info.in_selection &&
3167             view->selection_info.style != EV_SELECTION_STYLE_GLYPH) {
3168                 compute_selections (view,
3169                                     view->selection_info.style,
3170                                     &(view->selection_info.start),
3171                                     &(view->selection_info.start));
3172         }
3173
3174         if (view->selection_info.selections) {
3175                 ev_view_update_primary_selection (view);
3176
3177                 if (view->selection_info.in_drag) {
3178                         clear_selection (view);
3179                         gtk_widget_queue_draw (widget);
3180                 }
3181
3182                 view->selection_info.in_drag = FALSE;
3183         } else if (link) {
3184                 if (event->button == 2) {
3185                         EvLinkAction    *action;
3186                         EvLinkActionType type;
3187
3188                         action = ev_link_get_action (link);
3189                         if (!action)
3190                                 return FALSE;
3191
3192                         type = ev_link_action_get_action_type (action);
3193                         if (type == EV_LINK_ACTION_TYPE_GOTO_DEST) {
3194                                 g_signal_emit (view,
3195                                                signals[SIGNAL_EXTERNAL_LINK],
3196                                                0, action);
3197                         }
3198                 } else {
3199                         ev_view_handle_link (view, link);
3200                 }
3201         } else if (view->presentation) {
3202                 switch (event->button) {
3203                         case 1:
3204                                 ev_view_next_page (view);
3205                                 return TRUE;
3206                         case 3:
3207                                 ev_view_previous_page (view);
3208                                 return TRUE;
3209                 }
3210         }
3211
3212         return FALSE;
3213 }
3214
3215 /* Goto Window */
3216 /* Cut and paste from gtkwindow.c */
3217 static void
3218 send_focus_change (GtkWidget *widget,
3219                    gboolean   in)
3220 {
3221         GdkEvent *fevent = gdk_event_new (GDK_FOCUS_CHANGE);
3222
3223         g_object_ref (widget);
3224
3225         if (in)
3226                 GTK_WIDGET_SET_FLAGS (widget, GTK_HAS_FOCUS);
3227         else
3228                 GTK_WIDGET_UNSET_FLAGS (widget, GTK_HAS_FOCUS);
3229
3230         fevent->focus_change.type = GDK_FOCUS_CHANGE;
3231         fevent->focus_change.window = g_object_ref (widget->window);
3232         fevent->focus_change.in = in;
3233
3234         gtk_widget_event (widget, fevent);
3235
3236         g_object_notify (G_OBJECT (widget), "has-focus");
3237
3238         g_object_unref (widget);
3239         gdk_event_free (fevent);
3240 }
3241
3242 static void
3243 ev_view_goto_window_hide (EvView *view)
3244 {
3245         /* send focus-in event */
3246         send_focus_change (view->goto_entry, FALSE);
3247         gtk_widget_hide (view->goto_window);
3248         gtk_entry_set_text (GTK_ENTRY (view->goto_entry), "");
3249 }
3250
3251 static gboolean
3252 ev_view_goto_window_delete_event (GtkWidget   *widget,
3253                                   GdkEventAny *event,
3254                                   EvView      *view)
3255 {
3256         ev_view_goto_window_hide (view);
3257
3258         return TRUE;
3259 }
3260
3261 static gboolean
3262 key_is_numeric (guint keyval)
3263 {
3264         return ((keyval >= GDK_0 && keyval <= GDK_9) ||
3265                 (keyval >= GDK_KP_0 && keyval <= GDK_KP_9));
3266 }
3267
3268 static gboolean
3269 ev_view_goto_window_key_press_event (GtkWidget   *widget,
3270                                      GdkEventKey *event,
3271                                      EvView      *view)
3272 {
3273         switch (event->keyval) {
3274                 case GDK_Escape:
3275                 case GDK_Tab:
3276                 case GDK_KP_Tab:
3277                 case GDK_ISO_Left_Tab:
3278                         ev_view_goto_window_hide (view);
3279                         return TRUE;
3280                 case GDK_Return:
3281                 case GDK_KP_Enter:
3282                 case GDK_ISO_Enter:
3283                 case GDK_BackSpace:
3284                 case GDK_Delete:
3285                         return FALSE;
3286                 default:
3287                         if (!key_is_numeric (event->keyval))
3288                                 return TRUE;
3289         }
3290
3291         return FALSE;
3292 }
3293
3294 static gboolean
3295 ev_view_goto_window_button_press_event (GtkWidget      *widget,
3296                                         GdkEventButton *event,
3297                                         EvView         *view)
3298 {
3299         ev_view_goto_window_hide (view);
3300
3301         return TRUE;
3302 }
3303
3304 static void
3305 ev_view_goto_entry_activate (GtkEntry *entry,
3306                              EvView   *view)
3307 {
3308         const gchar *text;
3309         gint         page;
3310
3311         text = gtk_entry_get_text (entry);
3312         page = atoi (text) - 1;
3313
3314         ev_view_goto_window_hide (view);
3315
3316         if (page >= 0 &&
3317             page < ev_page_cache_get_n_pages (view->page_cache))
3318                 ev_page_cache_set_current_page (view->page_cache, page);
3319 }
3320
3321 static void
3322 ev_view_goto_window_create (EvView *view)
3323 {
3324         GtkWidget *frame, *hbox, *toplevel, *label;
3325
3326         toplevel = gtk_widget_get_toplevel (GTK_WIDGET (view));
3327
3328         if (view->goto_window) {
3329                 if (GTK_WINDOW (toplevel)->group)
3330                         gtk_window_group_add_window (GTK_WINDOW (toplevel)->group,
3331                                                      GTK_WINDOW (view->goto_window));
3332                 else if (GTK_WINDOW (view->goto_window)->group)
3333                         gtk_window_group_remove_window (GTK_WINDOW (view->goto_window)->group,
3334                                                         GTK_WINDOW (view->goto_window));
3335                 return;
3336         }
3337
3338         view->goto_window = gtk_window_new (GTK_WINDOW_POPUP);
3339
3340         if (GTK_WINDOW (toplevel)->group)
3341                 gtk_window_group_add_window (GTK_WINDOW (toplevel)->group,
3342                                              GTK_WINDOW (view->goto_window));
3343
3344         gtk_window_set_modal (GTK_WINDOW (view->goto_window), TRUE);
3345
3346         g_signal_connect (view->goto_window, "delete_event",
3347                           G_CALLBACK (ev_view_goto_window_delete_event),
3348                           view);
3349         g_signal_connect (view->goto_window, "key_press_event",
3350                           G_CALLBACK (ev_view_goto_window_key_press_event),
3351                           view);
3352         g_signal_connect (view->goto_window, "button_press_event",
3353                           G_CALLBACK (ev_view_goto_window_button_press_event),
3354                           view);
3355
3356         frame = gtk_frame_new (NULL);
3357         gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_ETCHED_IN);
3358         gtk_container_add (GTK_CONTAINER (view->goto_window), frame);
3359         gtk_widget_show (frame);
3360
3361         hbox = gtk_hbox_new (FALSE, 0);
3362         gtk_container_set_border_width (GTK_CONTAINER (hbox), 3);
3363         gtk_container_add (GTK_CONTAINER (frame), hbox);
3364         gtk_widget_show (hbox);
3365
3366         label = gtk_label_new(_("Jump to page:"));
3367         gtk_box_pack_start (GTK_BOX (hbox), label, TRUE, TRUE, 3);
3368         gtk_widget_show (label);
3369         gtk_widget_realize (label);
3370
3371         view->goto_entry = gtk_entry_new ();
3372         g_signal_connect (view->goto_entry, "activate",
3373                           G_CALLBACK (ev_view_goto_entry_activate),
3374                           view);
3375         gtk_box_pack_start_defaults (GTK_BOX (hbox), view->goto_entry);
3376         gtk_widget_show (view->goto_entry);
3377         gtk_widget_realize (view->goto_entry);
3378 }
3379
3380 static void
3381 ev_view_goto_entry_grab_focus (EvView *view)
3382 {
3383         GtkWidgetClass *entry_parent_class;
3384
3385         entry_parent_class = g_type_class_peek_parent (GTK_ENTRY_GET_CLASS (view->goto_entry));
3386         (entry_parent_class->grab_focus) (view->goto_entry);
3387
3388         send_focus_change (view->goto_entry, TRUE);
3389 }
3390
3391 static void
3392 ev_view_goto_window_send_key_event (EvView   *view,
3393                                     GdkEvent *event)
3394 {
3395         GdkEventKey *new_event;
3396         GdkScreen   *screen;
3397
3398         /* Move goto window off screen */
3399         screen = gtk_widget_get_screen (GTK_WIDGET (view));
3400         gtk_window_move (GTK_WINDOW (view->goto_window),
3401                          gdk_screen_get_width (screen) + 1,
3402                          gdk_screen_get_height (screen) + 1);
3403         gtk_widget_show (view->goto_window);
3404
3405         new_event = (GdkEventKey *) gdk_event_copy (event);
3406         g_object_unref (new_event->window);
3407         new_event->window = g_object_ref (view->goto_window->window);
3408         gtk_widget_realize (view->goto_window);
3409
3410         gtk_widget_event (view->goto_window, (GdkEvent *)new_event);
3411         gdk_event_free ((GdkEvent *)new_event);
3412         gtk_widget_hide (view->goto_window);
3413 }
3414
3415 static gboolean
3416 ev_view_key_press_event (GtkWidget   *widget,
3417                          GdkEventKey *event)
3418 {
3419         EvView *view = EV_VIEW (widget);
3420         EvPresentationState current;
3421
3422         if (!view->document)
3423                 return FALSE;
3424
3425         if (!view->presentation ||
3426             view->presentation_state == EV_PRESENTATION_END)
3427                 return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
3428
3429
3430         current = view->presentation_state;
3431
3432         switch (event->keyval) {
3433                 case GDK_b:
3434                 case GDK_B:
3435                         view->presentation_state =
3436                                 (view->presentation_state == EV_PRESENTATION_BLACK) ?
3437                                 EV_PRESENTATION_NORMAL : EV_PRESENTATION_BLACK;
3438                         break;
3439                 case GDK_w:
3440                 case GDK_W:
3441                         view->presentation_state =
3442                                 (view->presentation_state == EV_PRESENTATION_WHITE) ?
3443                                 EV_PRESENTATION_NORMAL : EV_PRESENTATION_WHITE;
3444                         break;
3445                 default:
3446                         if (view->presentation_state == EV_PRESENTATION_BLACK ||
3447                             view->presentation_state == EV_PRESENTATION_WHITE) {
3448                                 view->presentation_state = EV_PRESENTATION_NORMAL;
3449                         }
3450         }
3451
3452         if (current == view->presentation_state) {
3453                 if (ev_page_cache_get_n_pages (view->page_cache) > 1 &&
3454                     key_is_numeric (event->keyval)) {
3455                         gint x, y;
3456
3457                         ev_view_goto_window_create (view);
3458                         ev_view_goto_window_send_key_event (view, (GdkEvent *)event);
3459                         gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
3460                         gtk_window_move (GTK_WINDOW (view->goto_window), x, y);
3461                         gtk_widget_show (view->goto_window);
3462                         ev_view_goto_entry_grab_focus (view);
3463
3464                         return TRUE;
3465                 }
3466
3467                 return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
3468         }
3469
3470         switch (view->presentation_state) {
3471                 case EV_PRESENTATION_NORMAL:
3472                 case EV_PRESENTATION_BLACK:
3473                         gdk_window_set_background (view->layout.bin_window,
3474                                                    &widget->style->black);
3475                         break;
3476                 case EV_PRESENTATION_WHITE:
3477                         gdk_window_set_background (view->layout.bin_window,
3478                                                    &widget->style->white);
3479                         break;
3480                 default:
3481                         return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
3482         }
3483
3484         gtk_widget_queue_draw (widget);
3485         return TRUE;
3486 }
3487
3488 static gint
3489 ev_view_focus_in (GtkWidget     *widget,
3490                   GdkEventFocus *event)
3491 {
3492         if (EV_VIEW (widget)->pixbuf_cache)
3493                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
3494         gtk_widget_queue_draw (widget);
3495
3496         return FALSE;
3497 }
3498
3499 static gint
3500 ev_view_focus_out (GtkWidget     *widget,
3501                      GdkEventFocus *event)
3502 {
3503         if (EV_VIEW (widget)->goto_window)
3504                 ev_view_goto_window_hide (EV_VIEW (widget));
3505
3506         if (EV_VIEW (widget)->pixbuf_cache)
3507                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
3508         gtk_widget_queue_draw (widget);
3509
3510         return FALSE;
3511 }
3512
3513 static gboolean
3514 ev_view_leave_notify_event (GtkWidget *widget, GdkEventCrossing   *event)
3515 {
3516         EvView *view = EV_VIEW (widget);
3517
3518         if (view->cursor != EV_VIEW_CURSOR_NORMAL)
3519                 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
3520
3521 #if !GTK_CHECK_VERSION (2, 11, 7)
3522         if (view->link_tooltip) {
3523                 view->hovered_link = NULL;
3524                 ev_tooltip_deactivate (EV_TOOLTIP (view->link_tooltip));
3525         }
3526 #endif
3527
3528         return FALSE;
3529 }
3530
3531 static gboolean
3532 ev_view_enter_notify_event (GtkWidget *widget, GdkEventCrossing   *event)
3533 {
3534         EvView *view = EV_VIEW (widget);
3535
3536         ev_view_handle_cursor_over_xy (view, event->x, event->y);
3537
3538         return FALSE;
3539 }
3540
3541 static void
3542 ev_view_style_set (GtkWidget *widget,
3543                    GtkStyle  *old_style)
3544 {
3545         if (EV_VIEW (widget)->pixbuf_cache)
3546                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
3547
3548         GTK_WIDGET_CLASS (ev_view_parent_class)->style_set (widget, old_style);
3549 }
3550
3551 /*** Drawing ***/
3552
3553 static guint32
3554 ev_gdk_color_to_rgb (const GdkColor *color)
3555 {
3556   guint32 result;
3557   result = (0xff0000 | (color->red & 0xff00));
3558   result <<= 8;
3559   result |= ((color->green & 0xff00) | (color->blue >> 8));
3560   return result;
3561 }
3562
3563 static void
3564 draw_rubberband (GtkWidget *widget, GdkWindow *window,
3565                  const GdkRectangle *rect, guchar alpha)
3566 {
3567         GdkGC *gc;
3568         GdkPixbuf *pixbuf;
3569         GdkColor *fill_color_gdk;
3570         guint fill_color;
3571
3572         fill_color_gdk = gdk_color_copy (&GTK_WIDGET (widget)->style->base[GTK_STATE_SELECTED]);
3573         fill_color = ev_gdk_color_to_rgb (fill_color_gdk) << 8 | alpha;
3574
3575         pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE, 8,
3576                                  rect->width, rect->height);
3577         gdk_pixbuf_fill (pixbuf, fill_color);
3578
3579         gdk_draw_pixbuf (window, NULL, pixbuf,
3580                          0, 0,
3581                          rect->x - EV_VIEW (widget)->scroll_x, rect->y - EV_VIEW (widget)->scroll_y,
3582                          rect->width, rect->height,
3583                          GDK_RGB_DITHER_NONE,
3584                          0, 0);
3585
3586         g_object_unref (pixbuf);
3587
3588         gc = gdk_gc_new (window);
3589         gdk_gc_set_rgb_fg_color (gc, fill_color_gdk);
3590         gdk_draw_rectangle (window, gc, FALSE,
3591                             rect->x - EV_VIEW (widget)->scroll_x, rect->y - EV_VIEW (widget)->scroll_y,
3592                             rect->width - 1,
3593                             rect->height - 1);
3594         g_object_unref (gc);
3595
3596         gdk_color_free (fill_color_gdk);
3597 }
3598
3599
3600 static void
3601 highlight_find_results (EvView *view, int page)
3602 {
3603         EvDocumentFind *find;
3604         int i, results = 0;
3605
3606         find = EV_DOCUMENT_FIND (view->document);
3607
3608         results = ev_document_find_get_n_results (find, page);
3609
3610         for (i = 0; i < results; i++) {
3611                 EvRectangle rectangle;
3612                 GdkRectangle view_rectangle;
3613                 guchar alpha;
3614
3615                 if (i == view->find_result && page == view->current_page) {
3616                         alpha = 0x90;
3617                 } else {
3618                         alpha = 0x20;
3619                 }
3620
3621                 ev_document_find_get_result (find, page, i, &rectangle);
3622                 doc_rect_to_view_rect (view, page, &rectangle, &view_rectangle);
3623                 draw_rubberband (GTK_WIDGET (view), view->layout.bin_window,
3624                                  &view_rectangle, alpha);
3625         }
3626 }
3627
3628 static void
3629 draw_loading_text (EvView       *view,
3630                    GdkRectangle *page_area,
3631                    GdkRectangle *expose_area)
3632 {
3633         cairo_t *cr;
3634         gint     width, height;
3635
3636         if (!view->loading_text) {
3637                 const gchar *loading_text = _("Loading...");
3638                 PangoLayout *layout;
3639                 PangoFontDescription *font_desc;
3640                 PangoRectangle logical_rect;
3641                 gint target_width;
3642                 gdouble real_scale;
3643
3644                 ev_document_fc_mutex_lock ();
3645
3646                 layout = gtk_widget_create_pango_layout (GTK_WIDGET (view), loading_text);
3647
3648                 font_desc = pango_font_description_new ();
3649
3650                 /* We set the font to be 10 points, get the size, and scale appropriately */
3651                 pango_font_description_set_size (font_desc, 10 * PANGO_SCALE);
3652                 pango_layout_set_font_description (layout, font_desc);
3653                 pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
3654
3655                 target_width = MAX (page_area->width / 2, 1);
3656                 real_scale = ((double)target_width / (double) logical_rect.width) * (PANGO_SCALE * 10);
3657                 pango_font_description_set_size (font_desc, (int)real_scale);
3658                 pango_layout_set_font_description (layout, font_desc);
3659                 pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
3660
3661                 view->loading_text = cairo_image_surface_create (CAIRO_FORMAT_ARGB32,
3662                                                                  logical_rect.width,
3663                                                                  logical_rect.height);
3664                 cr = cairo_create (view->loading_text);
3665                 cairo_set_source_rgb (cr,
3666                                       155 / (double)255,
3667                                       155 / (double)255,
3668                                       155 / (double)255);
3669                 pango_cairo_show_layout (cr, layout);
3670                 cairo_destroy (cr);
3671
3672                 pango_font_description_free (font_desc);
3673                 g_object_unref (layout);
3674
3675                 ev_document_fc_mutex_unlock ();
3676         }
3677
3678         width = (page_area->width - cairo_image_surface_get_width (view->loading_text)) / 2;
3679         height = (page_area->height - cairo_image_surface_get_height (view->loading_text)) / 2;
3680
3681         cr = gdk_cairo_create (view->layout.bin_window);
3682         cairo_translate (cr,
3683                          page_area->x + width,
3684                          page_area->y + height);
3685         cairo_set_source_surface (cr, view->loading_text, 0, 0);
3686         cairo_paint (cr);
3687         cairo_destroy (cr);
3688 }
3689
3690 static void
3691 draw_one_page (EvView       *view,
3692                gint          page,
3693                cairo_t      *cr,
3694                GdkRectangle *page_area,
3695                GtkBorder    *border,
3696                GdkRectangle *expose_area,
3697                gboolean     *page_ready)
3698 {
3699         GdkRectangle overlap;
3700         GdkRectangle real_page_area;
3701
3702         g_assert (view->document);
3703
3704         if (! gdk_rectangle_intersect (page_area, expose_area, &overlap))
3705                 return;
3706
3707         /* Render the document itself */
3708         real_page_area = *page_area;
3709
3710         real_page_area.x += border->left;
3711         real_page_area.y += border->top;
3712         real_page_area.width -= (border->left + border->right);
3713         real_page_area.height -= (border->top + border->bottom);
3714         *page_ready = TRUE;
3715
3716         if (!view->presentation) {
3717                 gint current_page;
3718
3719                 current_page = ev_page_cache_get_current_page (view->page_cache);
3720                 ev_document_misc_paint_one_page (view->layout.bin_window,
3721                                                  GTK_WIDGET (view),
3722                                                  page_area, border,
3723                                                  page == current_page);
3724         }
3725
3726         if (gdk_rectangle_intersect (&real_page_area, expose_area, &overlap)) {
3727                 gint             width, height;
3728                 gint             page_width, page_height;
3729                 cairo_surface_t *page_surface = NULL;
3730                 gint             selection_width, selection_height;
3731                 cairo_surface_t *selection_surface = NULL;
3732
3733                 page_surface = ev_pixbuf_cache_get_surface (view->pixbuf_cache, page);
3734
3735                 if (!page_surface) {
3736                         draw_loading_text (view,
3737                                            &real_page_area,
3738                                            expose_area);
3739                         *page_ready = FALSE;
3740
3741                         return;
3742                 }
3743
3744                 ev_page_cache_get_size (view->page_cache,
3745                                         page, view->rotation,
3746                                         view->scale,
3747                                         &width, &height);
3748
3749                 page_width = cairo_image_surface_get_width (page_surface);
3750                 page_height = cairo_image_surface_get_height (page_surface);
3751
3752                 cairo_save (cr);
3753                 cairo_translate (cr, overlap.x, overlap.y);
3754
3755                 if (width != page_width || height != page_height) {
3756                         cairo_pattern_set_filter (cairo_get_source (cr),
3757                                                   CAIRO_FILTER_FAST);
3758                         cairo_scale (cr,
3759                                      (gdouble)width / page_width,
3760                                      (gdouble)height / page_height);
3761                 }
3762
3763                 cairo_surface_set_device_offset (page_surface,
3764                                                  overlap.x - real_page_area.x,
3765                                                  overlap.y - real_page_area.y);
3766                 cairo_set_source_surface (cr, page_surface, 0, 0);
3767                 cairo_paint (cr);
3768                 cairo_restore (cr);
3769
3770                 /* Get the selection pixbuf iff we have something to draw */
3771                 if (find_selection_for_page (view, page) &&
3772                     view->selection_mode == EV_VIEW_SELECTION_TEXT) {
3773                         selection_surface =
3774                                 ev_pixbuf_cache_get_selection_surface (view->pixbuf_cache,
3775                                                                        page,
3776                                                                        view->scale,
3777                                                                        NULL);
3778                 }
3779
3780                 if (!selection_surface) {
3781                         return;
3782                 }
3783
3784                 selection_width = cairo_image_surface_get_width (selection_surface);
3785                 selection_height = cairo_image_surface_get_height (selection_surface);
3786
3787                 cairo_save (cr);
3788                 cairo_translate (cr, overlap.x, overlap.y);
3789
3790                 if (width != selection_width || height != selection_height) {
3791                         cairo_pattern_set_filter (cairo_get_source (cr),
3792                                                   CAIRO_FILTER_FAST);
3793                         cairo_scale (cr,
3794                                      (gdouble)width / selection_width,
3795                                      (gdouble)height / selection_height);
3796                 }
3797
3798                 cairo_surface_set_device_offset (selection_surface,
3799                                                  overlap.x - real_page_area.x,
3800                                                  overlap.y - real_page_area.y);
3801                 cairo_set_source_surface (cr, selection_surface, 0, 0);
3802                 cairo_paint (cr);
3803                 cairo_restore (cr);
3804         }
3805 }
3806
3807 /*** GObject functions ***/
3808
3809 static void
3810 ev_view_finalize (GObject *object)
3811 {
3812         EvView *view = EV_VIEW (object);
3813
3814         g_free (view->find_status);
3815
3816         clear_selection (view);
3817
3818         if (view->image_dnd_info.image)
3819                 g_object_unref (view->image_dnd_info.image);
3820         view->image_dnd_info.image = NULL;
3821
3822         G_OBJECT_CLASS (ev_view_parent_class)->finalize (object);
3823 }
3824
3825 static void
3826 ev_view_destroy (GtkObject *object)
3827 {
3828         EvView *view = EV_VIEW (object);
3829
3830         if (view->document) {
3831                 g_object_unref (view->document);
3832                 view->document = NULL;
3833         }
3834
3835         if (view->pixbuf_cache) {
3836                 g_object_unref (view->pixbuf_cache);
3837                 view->pixbuf_cache = NULL;
3838         }
3839
3840 #if !GTK_CHECK_VERSION (2, 11, 7)
3841         if (view->link_tooltip) {
3842                 gtk_widget_destroy (view->link_tooltip);
3843                 view->link_tooltip = NULL;
3844         }
3845 #endif
3846         if (view->goto_window) {
3847                 gtk_widget_destroy (view->goto_window);
3848                 view->goto_window = NULL;
3849                 view->goto_entry = NULL;
3850         }
3851
3852         if (view->selection_scroll_id) {
3853             g_source_remove (view->selection_scroll_id);
3854             view->selection_scroll_id = 0;
3855         }
3856
3857         if (view->selection_update_id) {
3858             g_source_remove (view->selection_update_id);
3859             view->selection_update_id = 0;
3860         }
3861
3862         if (view->loading_text) {
3863                 cairo_surface_destroy (view->loading_text);
3864                 view->loading_text = NULL;
3865         }
3866
3867         if (view->scroll_info.timeout_id) {
3868             g_source_remove (view->scroll_info.timeout_id);
3869             view->scroll_info.timeout_id = 0;
3870         }
3871
3872         if (view->drag_info.drag_timeout_id) {
3873                 g_source_remove (view->drag_info.drag_timeout_id);
3874                 view->drag_info.drag_timeout_id = 0;
3875         }
3876
3877         if (view->drag_info.release_timeout_id) {
3878                 g_source_remove (view->drag_info.release_timeout_id);
3879                 view->drag_info.release_timeout_id = 0;
3880         }
3881
3882         ev_view_presentation_transition_stop (view);
3883
3884         ev_view_set_scroll_adjustments (GTK_LAYOUT (view), NULL, NULL);
3885
3886         GTK_OBJECT_CLASS (ev_view_parent_class)->destroy (object);
3887 }
3888
3889 static void
3890 ev_view_set_property (GObject      *object,
3891                       guint         prop_id,
3892                       const GValue *value,
3893                       GParamSpec   *pspec)
3894 {
3895         EvView *view = EV_VIEW (object);
3896
3897         switch (prop_id) {
3898                 case PROP_CONTINUOUS:
3899                         ev_view_set_continuous (view, g_value_get_boolean (value));
3900                         break;
3901                 case PROP_DUAL_PAGE:
3902                         ev_view_set_dual_page (view, g_value_get_boolean (value));
3903                         break;
3904                 case PROP_FULLSCREEN:
3905                         ev_view_set_fullscreen (view, g_value_get_boolean (value));
3906                         break;
3907                 case PROP_PRESENTATION:
3908                         ev_view_set_presentation (view, g_value_get_boolean (value));
3909                         break;
3910                 case PROP_SIZING_MODE:
3911                         ev_view_set_sizing_mode (view, g_value_get_enum (value));
3912                         break;
3913                 case PROP_ZOOM:
3914                         ev_view_set_zoom (view, g_value_get_double (value), FALSE);
3915                         break;
3916                 case PROP_ROTATION:
3917                         ev_view_set_rotation (view, g_value_get_int (value));
3918                         break;
3919                 default:
3920                         G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
3921         }
3922 }
3923
3924 static AtkObject *
3925 ev_view_get_accessible (GtkWidget *widget)
3926 {
3927         static gboolean first_time = TRUE;
3928
3929         if (first_time) {
3930                 AtkObjectFactory *factory;
3931                 AtkRegistry *registry;
3932                 GType derived_type;
3933                 GType derived_atk_type;
3934
3935                 /*
3936                  * Figure out whether accessibility is enabled by looking at the
3937                  * type of the accessible object which would be created for
3938                  * the parent type of EvView.
3939                  */
3940                 derived_type = g_type_parent (EV_TYPE_VIEW);
3941
3942                 registry = atk_get_default_registry ();
3943                 factory = atk_registry_get_factory (registry,
3944                                                     derived_type);
3945                 derived_atk_type = atk_object_factory_get_accessible_type (factory);
3946                 if (g_type_is_a (derived_atk_type, GTK_TYPE_ACCESSIBLE))
3947                         atk_registry_set_factory_type (registry,
3948                                                        EV_TYPE_VIEW,
3949                                                        ev_view_accessible_factory_get_type ());
3950                 first_time = FALSE;
3951         }
3952         return GTK_WIDGET_CLASS (ev_view_parent_class)->get_accessible (widget);
3953 }
3954
3955 static void
3956 ev_view_get_property (GObject *object,
3957                       guint prop_id,
3958                       GValue *value,
3959                       GParamSpec *pspec)
3960 {
3961         EvView *view = EV_VIEW (object);
3962
3963         switch (prop_id) {
3964                 case PROP_FIND_STATUS:
3965                         g_value_set_string (value, view->find_status);
3966                         break;
3967                 case PROP_CONTINUOUS:
3968                         g_value_set_boolean (value, view->continuous);
3969                         break;
3970                 case PROP_DUAL_PAGE:
3971                         g_value_set_boolean (value, view->dual_page);
3972                         break;
3973                 case PROP_FULLSCREEN:
3974                         g_value_set_boolean (value, view->fullscreen);
3975                         break;
3976                 case PROP_PRESENTATION:
3977                         g_value_set_boolean (value, view->presentation);
3978                         break;
3979                 case PROP_SIZING_MODE:
3980                         g_value_set_enum (value, view->sizing_mode);
3981                         break;
3982                 case PROP_ZOOM:
3983                         g_value_set_double (value, view->scale);
3984                         break;
3985                 case PROP_ROTATION:
3986                         g_value_set_int (value, view->rotation);
3987                         break;
3988                 case PROP_HAS_SELECTION:
3989                         g_value_set_boolean (value,
3990                                              view->selection_info.selections != NULL);
3991                         break;
3992                 default:
3993                         G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
3994         }
3995 }
3996
3997 static void
3998 ev_view_class_init (EvViewClass *class)
3999 {
4000         GObjectClass *object_class = G_OBJECT_CLASS (class);
4001         GtkObjectClass *gtk_object_class = GTK_OBJECT_CLASS (class);
4002         GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
4003         GtkLayoutClass *layout_class = GTK_LAYOUT_CLASS (class);
4004         GtkBindingSet *binding_set;
4005
4006         object_class->finalize = ev_view_finalize;
4007         object_class->set_property = ev_view_set_property;
4008         object_class->get_property = ev_view_get_property;
4009
4010         widget_class->expose_event = ev_view_expose_event;
4011         widget_class->button_press_event = ev_view_button_press_event;
4012         widget_class->motion_notify_event = ev_view_motion_notify_event;
4013         widget_class->button_release_event = ev_view_button_release_event;
4014         widget_class->key_press_event = ev_view_key_press_event;
4015         widget_class->focus_in_event = ev_view_focus_in;
4016         widget_class->focus_out_event = ev_view_focus_out;
4017         widget_class->get_accessible = ev_view_get_accessible;
4018         widget_class->size_request = ev_view_size_request;
4019         widget_class->size_allocate = ev_view_size_allocate;
4020         widget_class->realize = ev_view_realize;
4021         widget_class->scroll_event = ev_view_scroll_event;
4022         widget_class->enter_notify_event = ev_view_enter_notify_event;
4023         widget_class->leave_notify_event = ev_view_leave_notify_event;
4024         widget_class->style_set = ev_view_style_set;
4025         widget_class->drag_data_get = ev_view_drag_data_get;
4026         widget_class->drag_motion = ev_view_drag_motion;
4027         widget_class->drag_data_received = ev_view_drag_data_received;
4028         widget_class->popup_menu = ev_view_popup_menu;
4029 #if GTK_CHECK_VERSION (2, 11, 7)
4030         widget_class->query_tooltip = ev_view_query_tooltip;
4031 #endif
4032
4033         gtk_object_class->destroy = ev_view_destroy;
4034
4035         layout_class->set_scroll_adjustments = ev_view_set_scroll_adjustments;
4036
4037         class->binding_activated = ev_view_scroll;
4038
4039         signals[SIGNAL_BINDING_ACTIVATED] = g_signal_new ("binding_activated",
4040                          G_TYPE_FROM_CLASS (object_class),
4041                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
4042                          G_STRUCT_OFFSET (EvViewClass, binding_activated),
4043                          NULL, NULL,
4044                          ev_marshal_VOID__ENUM_BOOLEAN,
4045                          G_TYPE_NONE, 2,
4046                          GTK_TYPE_SCROLL_TYPE,
4047                          G_TYPE_BOOLEAN);
4048
4049         signals[SIGNAL_ZOOM_INVALID] = g_signal_new ("zoom-invalid",
4050                          G_TYPE_FROM_CLASS (object_class),
4051                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
4052                          G_STRUCT_OFFSET (EvViewClass, zoom_invalid),
4053                          NULL, NULL,
4054                          ev_marshal_VOID__VOID,
4055                          G_TYPE_NONE, 0, G_TYPE_NONE);
4056         signals[SIGNAL_HANDLE_LINK] = g_signal_new ("handle-link",
4057                          G_TYPE_FROM_CLASS (object_class),
4058                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
4059                          G_STRUCT_OFFSET (EvViewClass, handle_link),
4060                          NULL, NULL,
4061                          g_cclosure_marshal_VOID__OBJECT,
4062                          G_TYPE_NONE, 1,
4063                          G_TYPE_OBJECT);
4064         signals[SIGNAL_EXTERNAL_LINK] = g_signal_new ("external-link",
4065                          G_TYPE_FROM_CLASS (object_class),
4066                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
4067                          G_STRUCT_OFFSET (EvViewClass, external_link),
4068                          NULL, NULL,
4069                          g_cclosure_marshal_VOID__OBJECT,
4070                          G_TYPE_NONE, 1,
4071                          G_TYPE_OBJECT);
4072         signals[SIGNAL_POPUP_MENU] = g_signal_new ("popup",
4073                          G_TYPE_FROM_CLASS (object_class),
4074                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
4075                          G_STRUCT_OFFSET (EvViewClass, popup_menu),
4076                          NULL, NULL,
4077                          g_cclosure_marshal_VOID__OBJECT,
4078                          G_TYPE_NONE, 1,
4079                          G_TYPE_OBJECT);
4080
4081
4082         g_object_class_install_property (object_class,
4083                                          PROP_FIND_STATUS,
4084                                          g_param_spec_string ("find-status",
4085                                                               "Find Status Message",
4086                                                               "The find status message",
4087                                                               NULL,
4088                                                               G_PARAM_READABLE));
4089
4090         g_object_class_install_property (object_class,
4091                                          PROP_CONTINUOUS,
4092                                          g_param_spec_boolean ("continuous",
4093                                                                "Continuous",
4094                                                                "Continuous scrolling mode",
4095                                                                TRUE,
4096                                                                G_PARAM_READWRITE));
4097
4098         g_object_class_install_property (object_class,
4099                                          PROP_DUAL_PAGE,
4100                                          g_param_spec_boolean ("dual-page",
4101                                                                "Dual Page",
4102                                                                "Two pages visible at once",
4103                                                                FALSE,
4104                                                                G_PARAM_READWRITE));
4105         g_object_class_install_property (object_class,
4106                                          PROP_FULLSCREEN,
4107                                          g_param_spec_boolean ("fullscreen",
4108                                                                "Full Screen",
4109                                                                "Draw page in a fullscreen fashion",
4110                                                                FALSE,
4111                                                                G_PARAM_READWRITE));
4112         g_object_class_install_property (object_class,
4113                                          PROP_PRESENTATION,
4114                                          g_param_spec_boolean ("presentation",
4115                                                                "Presentation",
4116                                                                "Draw page in presentation mode",
4117                                                                TRUE,
4118                                                                G_PARAM_READWRITE));
4119
4120         g_object_class_install_property (object_class,
4121                                          PROP_SIZING_MODE,
4122                                          g_param_spec_enum ("sizing-mode",
4123                                                             "Sizing Mode",
4124                                                             "Sizing Mode",
4125                                                             EV_TYPE_SIZING_MODE,
4126                                                             EV_SIZING_FIT_WIDTH,
4127                                                             G_PARAM_READWRITE));
4128
4129         g_object_class_install_property (object_class,
4130                                          PROP_ZOOM,
4131                                          g_param_spec_double ("zoom",
4132                                                               "Zoom factor",
4133                                                               "Zoom factor",
4134                                                               0,
4135                                                               G_MAXDOUBLE,
4136                                                               1.0,
4137                                                               G_PARAM_READWRITE));
4138         g_object_class_install_property (object_class,
4139                                          PROP_ROTATION,
4140                                          g_param_spec_double ("rotation",
4141                                                               "Rotation",
4142                                                               "Rotation",
4143                                                               0,
4144                                                               360,
4145                                                               0,
4146                                                               G_PARAM_READWRITE));
4147         g_object_class_install_property (object_class,
4148                                          PROP_HAS_SELECTION,
4149                                          g_param_spec_boolean ("has-selection",
4150                                                                "Has selection",
4151                                                                "The view has selections",
4152                                                                FALSE,
4153                                                                G_PARAM_READABLE));
4154
4155         binding_set = gtk_binding_set_by_class (class);
4156
4157         add_scroll_binding_keypad (binding_set, GDK_Left,  0, EV_SCROLL_STEP_BACKWARD, TRUE);
4158         add_scroll_binding_keypad (binding_set, GDK_Right, 0, EV_SCROLL_STEP_FORWARD,  TRUE);
4159         add_scroll_binding_keypad (binding_set, GDK_Left,  GDK_MOD1_MASK, EV_SCROLL_STEP_DOWN, TRUE);
4160         add_scroll_binding_keypad (binding_set, GDK_Right, GDK_MOD1_MASK, EV_SCROLL_STEP_UP,  TRUE);
4161         add_scroll_binding_keypad (binding_set, GDK_Up,    0, EV_SCROLL_STEP_BACKWARD, FALSE);
4162         add_scroll_binding_keypad (binding_set, GDK_Down,  0, EV_SCROLL_STEP_FORWARD,  FALSE);
4163         add_scroll_binding_keypad (binding_set, GDK_Up,    GDK_MOD1_MASK, EV_SCROLL_STEP_DOWN, FALSE);
4164         add_scroll_binding_keypad (binding_set, GDK_Down,  GDK_MOD1_MASK, EV_SCROLL_STEP_UP,  FALSE);
4165         gtk_binding_entry_add_signal (binding_set, GDK_H, 0, "binding_activated", 2, EV_TYPE_SCROLL_TYPE,
4166                                       EV_SCROLL_STEP_BACKWARD, G_TYPE_BOOLEAN, TRUE);
4167         gtk_binding_entry_add_signal (binding_set, GDK_J, 0, "binding_activated", 2, EV_TYPE_SCROLL_TYPE,
4168                                       EV_SCROLL_STEP_FORWARD, G_TYPE_BOOLEAN, FALSE);
4169         gtk_binding_entry_add_signal (binding_set, GDK_K, 0, "binding_activated", 2, EV_TYPE_SCROLL_TYPE,
4170                                       EV_SCROLL_STEP_BACKWARD, G_TYPE_BOOLEAN, FALSE);
4171         gtk_binding_entry_add_signal (binding_set, GDK_L, 0, "binding_activated", 2, EV_TYPE_SCROLL_TYPE,
4172                                       EV_SCROLL_STEP_FORWARD, G_TYPE_BOOLEAN, TRUE);
4173
4174 }
4175
4176 static void
4177 ev_view_init (EvView *view)
4178 {
4179         GTK_WIDGET_SET_FLAGS (view, GTK_CAN_FOCUS);
4180
4181         view->spacing = 5;
4182         view->scale = 1.0;
4183         view->current_page = 0;
4184         view->pressed_button = -1;
4185         view->cursor = EV_VIEW_CURSOR_NORMAL;
4186         view->drag_info.in_drag = FALSE;
4187         view->scroll_info.autoscrolling = FALSE;
4188         view->selection_info.selections = NULL;
4189         view->selection_info.in_selection = FALSE;
4190         view->selection_info.in_drag = FALSE;
4191         view->selection_mode = EV_VIEW_SELECTION_TEXT;
4192         view->continuous = TRUE;
4193         view->dual_page = FALSE;
4194         view->presentation = FALSE;
4195         view->presentation_state = EV_PRESENTATION_NORMAL;
4196         view->fullscreen = FALSE;
4197         view->sizing_mode = EV_SIZING_FIT_WIDTH;
4198         view->pending_scroll = SCROLL_TO_KEEP_POSITION;
4199         view->jump_to_find_result = TRUE;
4200         view->highlight_find_results = FALSE;
4201
4202         gtk_layout_set_hadjustment (GTK_LAYOUT (view), NULL);
4203         gtk_layout_set_vadjustment (GTK_LAYOUT (view), NULL);
4204
4205         gtk_drag_dest_set (GTK_WIDGET (view),
4206                            GTK_DEST_DEFAULT_ALL,
4207                            view_drop_targets,
4208                            G_N_ELEMENTS (view_drop_targets),
4209                            GDK_ACTION_COPY);
4210 }
4211
4212 /*** Callbacks ***/
4213
4214 static void
4215 find_changed_cb (EvDocument *document, int page, EvView *view)
4216 {
4217         double percent;
4218         int n_pages;
4219
4220         percent = ev_document_find_get_progress
4221                         (EV_DOCUMENT_FIND (view->document));
4222         n_pages = ev_page_cache_get_n_pages (view->page_cache);
4223
4224         if (view->jump_to_find_result == TRUE) {
4225                 jump_to_find_page (view, EV_VIEW_FIND_NEXT, 0);
4226                 jump_to_find_result (view);
4227         }
4228         update_find_status_message (view, percent * n_pages >= n_pages - 1 );
4229         if (view->current_page == page)
4230                 gtk_widget_queue_draw (GTK_WIDGET (view));
4231 }
4232
4233 static void
4234 ev_view_change_page (EvView *view,
4235                      gint    new_page)
4236 {
4237         gint x, y;
4238
4239         view->current_page = new_page;
4240         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
4241
4242         if (view->presentation)
4243                 ev_view_presentation_transition_start (view);
4244
4245         gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
4246         ev_view_handle_cursor_over_xy (view, x, y);
4247
4248         gtk_widget_queue_resize (GTK_WIDGET (view));
4249 }
4250
4251 static void
4252 ev_view_transition_animation_finish (EvTransitionAnimation *animation,
4253                                      EvView                *view)
4254 {
4255         g_object_unref (view->animation);
4256         view->animation = NULL;
4257         ev_view_change_page (view, view->current_page);
4258 }
4259
4260 static void
4261 ev_view_transition_animation_frame (EvTransitionAnimation *animation,
4262                                     gdouble                progress,
4263                                     EvView                *view)
4264 {
4265         gtk_widget_queue_draw (GTK_WIDGET (view));
4266 }
4267
4268 static void
4269 ev_view_presentation_animation_start (EvView *view,
4270                                       int     new_page)
4271 {
4272         EvTransitionEffect *effect = NULL;
4273         cairo_surface_t *surface;
4274
4275         if (EV_IS_DOCUMENT_TRANSITION (view->document))
4276                 effect = ev_document_transition_get_effect (EV_DOCUMENT_TRANSITION (view->document),
4277                                                             view->current_page);
4278         if (!effect)
4279                 return;
4280
4281         surface = ev_pixbuf_cache_get_surface (view->pixbuf_cache, view->current_page);
4282         view->animation = ev_transition_animation_new (effect);
4283         ev_transition_animation_set_origin_surface (view->animation, surface);
4284
4285         g_signal_connect (view->animation, "frame",
4286                           G_CALLBACK (ev_view_transition_animation_frame), view);
4287         g_signal_connect (view->animation, "finished",
4288                           G_CALLBACK (ev_view_transition_animation_finish), view);
4289 }
4290
4291 static void
4292 job_finished_cb (EvPixbufCache *pixbuf_cache,
4293                  GdkRegion     *region,
4294                  EvView        *view)
4295 {
4296         if (view->animation) {
4297                 cairo_surface_t *surface;
4298
4299                 surface = ev_pixbuf_cache_get_surface (pixbuf_cache, view->current_page);
4300                 ev_transition_animation_set_dest_surface (view->animation, surface);
4301         }
4302
4303         if (region) {
4304                 gdk_window_invalidate_region (view->layout.bin_window,
4305                                               region, TRUE);
4306         } else {
4307                 gtk_widget_queue_draw (GTK_WIDGET (view));
4308         }
4309 }
4310
4311 static void
4312 page_changed_cb (EvPageCache *page_cache,
4313                  int          new_page,
4314                  EvView      *view)
4315 {
4316         if (view->current_page != new_page) {
4317                 if (view->presentation)
4318                         ev_view_presentation_animation_start (view, new_page);
4319
4320                 ev_view_change_page (view, new_page);
4321         } else {
4322                 gtk_widget_queue_draw (GTK_WIDGET (view));
4323         }
4324
4325         if (EV_IS_DOCUMENT_FIND (view->document)) {
4326                 view->find_result = 0;
4327                 update_find_status_message (view, TRUE);
4328         }
4329 }
4330
4331 static void
4332 on_adjustment_value_changed (GtkAdjustment *adjustment,
4333                              EvView        *view)
4334 {
4335         int dx = 0, dy = 0;
4336         gint x, y;
4337         GList *children, *l;
4338
4339         if (! GTK_WIDGET_REALIZED (view))
4340                 return;
4341
4342         if (view->hadjustment) {
4343                 dx = view->scroll_x - (int) view->hadjustment->value;
4344                 view->scroll_x = (int) view->hadjustment->value;
4345         } else {
4346                 view->scroll_x = 0;
4347         }
4348
4349         if (view->vadjustment) {
4350                 dy = view->scroll_y - (int) view->vadjustment->value;
4351                 view->scroll_y = (int) view->vadjustment->value;
4352         } else {
4353                 view->scroll_y = 0;
4354         }
4355
4356         children = gtk_container_get_children (GTK_CONTAINER (view));
4357         for (l = children; l && l->data; l = g_list_next (l)) {
4358                 gint       child_x, child_y;
4359                 GtkWidget *child = (GtkWidget *)l->data;
4360
4361                 gtk_container_child_get (GTK_CONTAINER (view),
4362                                          child,
4363                                          "x", &child_x,
4364                                          "y", &child_y,
4365                                          NULL);
4366                 gtk_layout_move (GTK_LAYOUT (view), child, child_x + dx, child_y + dy);
4367         }
4368         g_list_free (children);
4369
4370         if (view->pending_resize)
4371                 gtk_widget_queue_draw (GTK_WIDGET (view));
4372         else
4373                 gdk_window_scroll (view->layout.bin_window, dx, dy);
4374
4375         gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
4376         ev_view_handle_cursor_over_xy (view, x, y);
4377
4378         if (view->document)
4379                 view_update_range_and_current_page (view);
4380 }
4381
4382 GtkWidget*
4383 ev_view_new (void)
4384 {
4385         GtkWidget *view;
4386
4387         view = g_object_new (EV_TYPE_VIEW, NULL);
4388
4389         return view;
4390 }
4391
4392 static void
4393 setup_caches (EvView *view)
4394 {
4395         view->page_cache = ev_page_cache_get (view->document);
4396         g_signal_connect (view->page_cache, "page-changed", G_CALLBACK (page_changed_cb), view);
4397         view->pixbuf_cache = ev_pixbuf_cache_new (GTK_WIDGET (view), view->document);
4398         g_signal_connect (view->pixbuf_cache, "job-finished", G_CALLBACK (job_finished_cb), view);
4399         page_changed_cb (view->page_cache,
4400                          ev_page_cache_get_current_page (view->page_cache),
4401                          view);
4402 }
4403
4404 static void
4405 clear_caches (EvView *view)
4406 {
4407         if (view->pixbuf_cache) {
4408                 g_object_unref (view->pixbuf_cache);
4409                 view->pixbuf_cache = NULL;
4410         }
4411
4412         if (view->page_cache) {
4413                 view->page_cache = NULL;
4414         }
4415 }
4416
4417 void
4418 ev_view_set_loading (EvView       *view,
4419                      gboolean      loading)
4420 {
4421         view->loading = loading;
4422         gtk_widget_queue_draw (GTK_WIDGET (view));
4423 }
4424
4425 static gboolean ev_view_autoscroll_cb (EvView *view)
4426 {
4427         gdouble speed, value;
4428
4429         /* If the user stops autoscrolling, autoscrolling will be
4430          * set to false but the timeout will continue; stop the timeout: */
4431         if (!view->scroll_info.autoscrolling) {
4432                 view->scroll_info.timeout_id = 0;
4433                 return FALSE;
4434         }
4435
4436         if (view->scroll_info.last_y > view->scroll_info.start_y &&
4437                 (view->scroll_info.last_y < view->scroll_info.start_y))
4438                 return TRUE;
4439
4440         /* Replace 100 with your speed of choice: The lower the faster.
4441          * Replace 3 with another speed of choice: The higher, the faster it accelerated
4442          *      based on the distance of the starting point from the mouse
4443          * (All also effected by the timeout interval of this callback) */
4444
4445         if (view->scroll_info.start_y > view->scroll_info.last_y)
4446                 speed = -pow ((((gdouble)view->scroll_info.start_y - view->scroll_info.last_y) / 100), 3);
4447         else
4448                 speed = pow ((((gdouble)view->scroll_info.last_y - view->scroll_info.start_y) / 100), 3);
4449
4450         value = gtk_adjustment_get_value (view->vadjustment);
4451         value = CLAMP (value + speed, 0, view->vadjustment->upper - view->vadjustment->page_size);
4452         gtk_adjustment_set_value (view->vadjustment, value);
4453
4454         return TRUE;
4455
4456 }
4457
4458 void ev_view_autoscroll(EvView *view)
4459 {
4460         view->scroll_info.autoscrolling = TRUE;
4461         view->scroll_info.timeout_id = g_timeout_add (20, (GSourceFunc)(ev_view_autoscroll_cb), view);
4462 }
4463
4464 void
4465 ev_view_set_document (EvView     *view,
4466                       EvDocument *document)
4467 {
4468         g_return_if_fail (EV_IS_VIEW (view));
4469
4470         view->loading = FALSE;
4471
4472         if (document != view->document) {
4473                 clear_caches (view);
4474
4475                 if (view->document) {
4476                         g_signal_handlers_disconnect_by_func (view->document,
4477                                                               find_changed_cb,
4478                                                               view);
4479                         g_object_unref (view->document);
4480                         view->page_cache = NULL;
4481
4482                 }
4483
4484                 view->document = document;
4485                 view->find_result = 0;
4486
4487                 if (view->document) {
4488                         g_object_ref (view->document);
4489                         if (EV_IS_DOCUMENT_FIND (view->document)) {
4490                                 g_signal_connect (view->document,
4491                                                   "find_changed",
4492                                                   G_CALLBACK (find_changed_cb),
4493                                                   view);
4494                         }
4495
4496                         setup_caches (view);
4497                 }
4498
4499                 gtk_widget_queue_resize (GTK_WIDGET (view));
4500         }
4501 }
4502
4503 /*** Zoom and sizing mode ***/
4504
4505 #define EPSILON 0.0000001
4506 void
4507 ev_view_set_zoom (EvView   *view,
4508                   double    factor,
4509                   gboolean  relative)
4510 {
4511         double scale;
4512
4513         if (relative)
4514                 scale = view->scale * factor;
4515         else
4516                 scale = factor;
4517
4518         scale = CLAMP (scale,
4519                        view->sizing_mode == EV_SIZING_FREE ? view->min_scale : 0,
4520                        view->max_scale);
4521
4522         if (ABS (view->scale - scale) < EPSILON)
4523                 return;
4524
4525         if (view->loading_text) {
4526                 cairo_surface_destroy (view->loading_text);
4527                 view->loading_text = NULL;
4528         }
4529
4530         view->scale = scale;
4531         view->pending_resize = TRUE;
4532
4533         gtk_widget_queue_resize (GTK_WIDGET (view));
4534
4535         g_object_notify (G_OBJECT (view), "zoom");
4536 }
4537
4538 double
4539 ev_view_get_zoom (EvView *view)
4540 {
4541         return view->scale;
4542 }
4543
4544 void
4545 ev_view_set_screen_dpi (EvView  *view,
4546                         gdouble  dpi)
4547 {
4548         g_return_if_fail (EV_IS_VIEW (view));
4549         g_return_if_fail (dpi > 0);
4550
4551         view->dpi = dpi;
4552         view->min_scale = MIN_SCALE * dpi / 72.0;
4553         view->max_scale = MAX_SCALE * dpi / 72.0;
4554 }
4555
4556 gboolean
4557 ev_view_get_continuous (EvView *view)
4558 {
4559         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
4560
4561         return view->continuous;
4562 }
4563
4564 void
4565 ev_view_set_continuous (EvView   *view,
4566                         gboolean  continuous)
4567 {
4568         g_return_if_fail (EV_IS_VIEW (view));
4569
4570         continuous = continuous != FALSE;
4571
4572         if (view->continuous != continuous) {
4573                 view->continuous = continuous;
4574                 view->pending_scroll = SCROLL_TO_PAGE_POSITION;
4575                 gtk_widget_queue_resize (GTK_WIDGET (view));
4576         }
4577
4578         g_object_notify (G_OBJECT (view), "continuous");
4579 }
4580
4581 gboolean
4582 ev_view_get_dual_page (EvView *view)
4583 {
4584         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
4585
4586         return view->dual_page;
4587 }
4588
4589 void
4590 ev_view_set_dual_page (EvView   *view,
4591                        gboolean  dual_page)
4592 {
4593         g_return_if_fail (EV_IS_VIEW (view));
4594
4595         dual_page = dual_page != FALSE;
4596
4597         if (view->dual_page == dual_page)
4598                 return;
4599
4600         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
4601         view->dual_page = dual_page;
4602         /* FIXME: if we're keeping the pixbuf cache around, we should extend the
4603          * preload_cache_size to be 2 if dual_page is set.
4604          */
4605         gtk_widget_queue_resize (GTK_WIDGET (view));
4606
4607         g_object_notify (G_OBJECT (view), "dual-page");
4608 }
4609
4610 void
4611 ev_view_set_fullscreen (EvView   *view,
4612                          gboolean  fullscreen)
4613 {
4614         g_return_if_fail (EV_IS_VIEW (view));
4615
4616         fullscreen = fullscreen != FALSE;
4617
4618         if (view->fullscreen == fullscreen)
4619                 return;
4620
4621         view->fullscreen = fullscreen;
4622         gtk_widget_queue_resize (GTK_WIDGET (view));
4623
4624         g_object_notify (G_OBJECT (view), "fullscreen");
4625 }
4626
4627 gboolean
4628 ev_view_get_fullscreen (EvView *view)
4629 {
4630         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
4631
4632         return view->fullscreen;
4633 }
4634
4635 void
4636 ev_view_set_presentation (EvView   *view,
4637                           gboolean  presentation)
4638 {
4639         g_return_if_fail (EV_IS_VIEW (view));
4640
4641         presentation = presentation != FALSE;
4642
4643         if (view->presentation == presentation)
4644                 return;
4645
4646         if (!presentation)
4647                 view->presentation_state = EV_PRESENTATION_NORMAL;
4648
4649         view->presentation = presentation;
4650         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
4651
4652         if (presentation) {
4653                 view->sizing_mode_saved = view->sizing_mode;
4654                 view->scale_saved = view->scale;
4655                 ev_view_set_sizing_mode (view, EV_SIZING_BEST_FIT);
4656         } else {
4657                 ev_view_set_sizing_mode (view, view->sizing_mode_saved);
4658                 ev_view_set_zoom (view, view->scale_saved, FALSE);
4659         }
4660
4661         gtk_widget_queue_resize (GTK_WIDGET (view));
4662
4663         if (presentation)
4664                 ev_view_presentation_transition_start (view);
4665         else {
4666                 ev_view_presentation_transition_stop (view);
4667
4668                 if (view->animation) {
4669                         /* stop any running animation */
4670                         ev_view_transition_animation_finish (view->animation, view);
4671                 }
4672         }
4673
4674         if (GTK_WIDGET_REALIZED (view)) {
4675                 if (view->presentation)
4676                         gdk_window_set_background (view->layout.bin_window,
4677                                                    &GTK_WIDGET (view)->style->black);
4678                 else
4679                         gdk_window_set_background (view->layout.bin_window,
4680                                                    &GTK_WIDGET (view)->style->mid [GTK_STATE_NORMAL]);
4681         }
4682
4683         g_object_notify (G_OBJECT (view), "presentation");
4684 }
4685
4686 gboolean
4687 ev_view_get_presentation (EvView *view)
4688 {
4689         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
4690
4691         return view->presentation;
4692 }
4693
4694 static gboolean
4695 transition_next_page (EvView *view)
4696 {
4697         ev_view_next_page (view);
4698
4699         return FALSE;
4700 }
4701
4702 static void
4703 ev_view_presentation_transition_stop (EvView *view)
4704 {
4705         if (view->trans_timeout_id > 0)
4706                 g_source_remove (view->trans_timeout_id);
4707         view->trans_timeout_id = 0;
4708 }
4709
4710 static void
4711 ev_view_presentation_transition_start (EvView *view)
4712 {
4713         gdouble duration;
4714
4715         if (!EV_IS_DOCUMENT_TRANSITION (view->document))
4716                 return;
4717
4718         ev_view_presentation_transition_stop (view);
4719
4720         duration = ev_document_transition_get_page_duration (EV_DOCUMENT_TRANSITION (view->document),
4721                                                              view->current_page);
4722         if (duration > 0) {
4723 #if GLIB_CHECK_VERSION (2, 13, 0)
4724                 view->trans_timeout_id =
4725                         g_timeout_add_seconds (duration,
4726                                                (GSourceFunc) transition_next_page,
4727                                                view);
4728 #else
4729                 view->trans_timeout_id =
4730                         g_timeout_add (duration * 1000,
4731                                        (GSourceFunc) transition_next_page,
4732                                        view);
4733 #endif
4734         }
4735 }
4736
4737 void
4738 ev_view_set_sizing_mode (EvView       *view,
4739                          EvSizingMode  sizing_mode)
4740 {
4741         g_return_if_fail (EV_IS_VIEW (view));
4742
4743         if (view->sizing_mode == sizing_mode)
4744                 return;
4745
4746         view->sizing_mode = sizing_mode;
4747         gtk_widget_queue_resize (GTK_WIDGET (view));
4748
4749         g_object_notify (G_OBJECT (view), "sizing-mode");
4750 }
4751
4752 EvSizingMode
4753 ev_view_get_sizing_mode (EvView *view)
4754 {
4755         g_return_val_if_fail (EV_IS_VIEW (view), EV_SIZING_FREE);
4756
4757         return view->sizing_mode;
4758 }
4759
4760 gboolean
4761 ev_view_can_zoom_in (EvView *view)
4762 {
4763         return view->scale * ZOOM_IN_FACTOR <= view->max_scale;
4764 }
4765
4766 gboolean
4767 ev_view_can_zoom_out (EvView *view)
4768 {
4769         return view->scale * ZOOM_OUT_FACTOR >= view->min_scale;
4770 }
4771
4772 void
4773 ev_view_zoom_in (EvView *view)
4774 {
4775         g_return_if_fail (view->sizing_mode == EV_SIZING_FREE);
4776
4777         if (view->presentation)
4778                 return;
4779
4780         view->pending_scroll = SCROLL_TO_CENTER;
4781         ev_view_set_zoom (view, ZOOM_IN_FACTOR, TRUE);
4782 }
4783
4784 void
4785 ev_view_zoom_out (EvView *view)
4786 {
4787         g_return_if_fail (view->sizing_mode == EV_SIZING_FREE);
4788
4789         if (view->presentation)
4790                 return;
4791
4792         view->pending_scroll = SCROLL_TO_CENTER;
4793         ev_view_set_zoom (view, ZOOM_OUT_FACTOR, TRUE);
4794 }
4795
4796 void
4797 ev_view_rotate_right (EvView *view)
4798 {
4799         int rotation = view->rotation + 90;
4800
4801         if (rotation >= 360) {
4802                 rotation -= 360;
4803         }
4804
4805         ev_view_set_rotation (view, rotation);
4806 }
4807
4808 void
4809 ev_view_rotate_left (EvView *view)
4810 {
4811         int rotation = view->rotation - 90;
4812
4813         if (rotation < 0) {
4814                 rotation += 360;
4815         }
4816
4817         ev_view_set_rotation (view, rotation);
4818 }
4819
4820 void
4821 ev_view_set_rotation (EvView *view, int rotation)
4822 {
4823         view->rotation = rotation;
4824
4825         if (view->pixbuf_cache) {
4826                 ev_pixbuf_cache_clear (view->pixbuf_cache);
4827                 gtk_widget_queue_resize (GTK_WIDGET (view));
4828         }
4829
4830         if (rotation != 0)
4831                 clear_selection (view);
4832
4833         g_object_notify (G_OBJECT (view), "rotation");
4834 }
4835
4836 int
4837 ev_view_get_rotation (EvView *view)
4838 {
4839         return view->rotation;
4840 }
4841
4842 static double
4843 zoom_for_size_fit_width (int doc_width,
4844                          int doc_height,
4845                          int target_width,
4846                          int target_height,
4847                          int vsb_width)
4848 {
4849         double scale;
4850
4851         scale = (double)target_width / doc_width;
4852
4853         if (doc_height * scale > target_height)
4854                 scale = (double) (target_width - vsb_width) / doc_width;
4855
4856         return scale;
4857 }
4858
4859 static double
4860 zoom_for_size_fit_height (int doc_width,
4861                           int doc_height,
4862                           int target_width,
4863                           int target_height,
4864                           int vsb_height)
4865 {
4866         double scale;
4867
4868         scale = (double)target_height / doc_height;
4869
4870         if (doc_width * scale > target_width)
4871                 scale = (double) (target_height - vsb_height) / doc_height;
4872
4873         return scale;
4874 }
4875
4876 static double
4877 zoom_for_size_best_fit (int doc_width,
4878                         int doc_height,
4879                         int target_width,
4880                         int target_height,
4881                         int vsb_width,
4882                         int hsb_width)
4883 {
4884         double w_scale;
4885         double h_scale;
4886
4887         w_scale = (double)target_width / doc_width;
4888         h_scale = (double)target_height / doc_height;
4889
4890         if (doc_height * w_scale > target_height)
4891                 w_scale = (double) (target_width - vsb_width) / doc_width;
4892         if (doc_width * h_scale > target_width)
4893                 h_scale = (double) (target_height - hsb_width) / doc_height;
4894
4895         return MIN (w_scale, h_scale);
4896 }
4897
4898
4899 static void
4900 ev_view_zoom_for_size_presentation (EvView *view,
4901                                     int     width,
4902                                     int     height)
4903 {
4904         int doc_width, doc_height;
4905         gdouble scale;
4906
4907         ev_page_cache_get_size (view->page_cache,
4908                                 view->current_page,
4909                                 view->rotation,
4910                                 1.0,
4911                                 &doc_width,
4912                                 &doc_height);
4913         scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, 0, 0);
4914         ev_view_set_zoom (view, scale, FALSE);
4915 }
4916
4917 static void
4918 ev_view_zoom_for_size_continuous_and_dual_page (EvView *view,
4919                            int     width,
4920                            int     height,
4921                            int     vsb_width,
4922                            int     hsb_height)
4923 {
4924         int doc_width, doc_height;
4925         GtkBorder border;
4926         gdouble scale;
4927
4928         ev_page_cache_get_max_width (view->page_cache,
4929                                      view->rotation,
4930                                      1.0,
4931                                      &doc_width);
4932         ev_page_cache_get_max_height (view->page_cache,
4933                                       view->rotation,
4934                                       1.0,
4935                                       &doc_height);
4936         compute_border (view, doc_width, doc_height, &border);
4937
4938         doc_width = doc_width * 2;
4939         width -= (2 * (border.left + border.right) + 3 * view->spacing);
4940         height -= (border.top + border.bottom + 2 * view->spacing - 1);
4941
4942         /* FIXME: We really need to calculate the overall height here, not the
4943          * page height.  We assume there's always a vertical scrollbar for
4944          * now.  We need to fix this. */
4945         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
4946                 scale = zoom_for_size_fit_width (doc_width, doc_height, width - vsb_width, height, 0);
4947         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
4948                 scale = zoom_for_size_best_fit (doc_width, doc_height, width - vsb_width, height, 0, hsb_height);
4949         else
4950                 g_assert_not_reached ();
4951
4952         ev_view_set_zoom (view, scale, FALSE);
4953 }
4954
4955 static void
4956 ev_view_zoom_for_size_continuous (EvView *view,
4957                                   int     width,
4958                                   int     height,
4959                                   int     vsb_width,
4960                                   int     hsb_height)
4961 {
4962         int doc_width, doc_height;
4963         GtkBorder border;
4964         gdouble scale;
4965
4966         ev_page_cache_get_max_width (view->page_cache,
4967                                      view->rotation,
4968                                      1.0,
4969                                      &doc_width);
4970         ev_page_cache_get_max_height (view->page_cache,
4971                                       view->rotation,
4972                                       1.0,
4973                                       &doc_height);
4974         compute_border (view, doc_width, doc_height, &border);
4975
4976         width -= (border.left + border.right + 2 * view->spacing);
4977         height -= (border.top + border.bottom + 2 * view->spacing - 1);
4978
4979         /* FIXME: We really need to calculate the overall height here, not the
4980          * page height.  We assume there's always a vertical scrollbar for
4981          * now.  We need to fix this. */
4982         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
4983                 scale = zoom_for_size_fit_width (doc_width, doc_height, width - vsb_width, height, 0);
4984         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
4985                 scale = zoom_for_size_best_fit (doc_width, doc_height, width - vsb_width, height, 0, hsb_height);
4986         else
4987                 g_assert_not_reached ();
4988
4989         ev_view_set_zoom (view, scale, FALSE);
4990 }
4991
4992 static void
4993 ev_view_zoom_for_size_dual_page (EvView *view,
4994                                  int     width,
4995                                  int     height,
4996                                  int     vsb_width,
4997                                  int     hsb_height)
4998 {
4999         GtkBorder border;
5000         gint doc_width, doc_height;
5001         gdouble scale;
5002         gint other_page;
5003
5004         other_page = view->current_page ^ 1;
5005
5006         /* Find the largest of the two. */
5007         ev_page_cache_get_size (view->page_cache,
5008                                 view->current_page,
5009                                 view->rotation,
5010                                 1.0,
5011                                 &doc_width, &doc_height);
5012
5013         if (other_page < ev_page_cache_get_n_pages (view->page_cache)) {
5014                 gint width_2, height_2;
5015                 ev_page_cache_get_size (view->page_cache,
5016                                         other_page,
5017                                         view->rotation,
5018                                         1.0,
5019                                         &width_2, &height_2);
5020                 if (width_2 > doc_width)
5021                         doc_width = width_2;
5022                 if (height_2 > doc_height)
5023                         doc_height = height_2;
5024         }
5025         compute_border (view, doc_width, doc_height, &border);
5026
5027         doc_width = doc_width * 2;
5028         width -= ((border.left + border.right)* 2 + 3 * view->spacing);
5029         height -= (border.top + border.bottom + 2 * view->spacing);
5030
5031         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
5032                 scale = zoom_for_size_fit_width (doc_width, doc_height, width, height, vsb_width);
5033         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
5034                 scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, vsb_width, hsb_height);
5035         else
5036                 g_assert_not_reached ();
5037
5038         ev_view_set_zoom (view, scale, FALSE);
5039 }
5040
5041 static void
5042 ev_view_zoom_for_size_single_page (EvView *view,
5043                                    int     width,
5044                                    int     height,
5045                                    int     vsb_width,
5046                                    int     hsb_height)
5047 {
5048         int doc_width, doc_height;
5049         GtkBorder border;
5050         gdouble scale;
5051
5052         ev_page_cache_get_size (view->page_cache,
5053                                 view->current_page,
5054                                 view->rotation,
5055                                 1.0,
5056                                 &doc_width,
5057                                 &doc_height);
5058         /* Get an approximate border */
5059         compute_border (view, width, height, &border);
5060
5061         width -= (border.left + border.right + 2 * view->spacing);
5062         height -= (border.top + border.bottom + 2 * view->spacing);
5063
5064         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
5065                 scale = zoom_for_size_fit_width (doc_width, doc_height, width, height, vsb_width);
5066         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
5067                 scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, vsb_width, hsb_height);
5068         else
5069                 g_assert_not_reached ();
5070
5071         ev_view_set_zoom (view, scale, FALSE);
5072 }
5073
5074 static void
5075 ev_view_set_zoom_for_size (EvView *view,
5076                            int     width,
5077                            int     height,
5078                            int     vsb_width,
5079                            int     hsb_height)
5080 {
5081         g_return_if_fail (EV_IS_VIEW (view));
5082         g_return_if_fail (view->sizing_mode == EV_SIZING_FIT_WIDTH ||
5083                           view->sizing_mode == EV_SIZING_BEST_FIT);
5084         g_return_if_fail (width >= 0);
5085         g_return_if_fail (height >= 0);
5086
5087         if (view->document == NULL)
5088                 return;
5089
5090         if (view->presentation)
5091                 ev_view_zoom_for_size_presentation (view, width, height);
5092         else if (view->continuous && view->dual_page)
5093                 ev_view_zoom_for_size_continuous_and_dual_page (view, width, height, vsb_width, hsb_height);
5094         else if (view->continuous)
5095                 ev_view_zoom_for_size_continuous (view, width, height, vsb_width, hsb_height);
5096         else if (view->dual_page)
5097                 ev_view_zoom_for_size_dual_page (view, width, height, vsb_width, hsb_height);
5098         else
5099                 ev_view_zoom_for_size_single_page (view, width, height, vsb_width, hsb_height);
5100 }
5101
5102 /*** Find ***/
5103 static void
5104 update_find_status_message (EvView *view, gboolean this_page)
5105 {
5106         char *message;
5107
5108         if (this_page) {
5109                 int results;
5110
5111                 results = ev_document_find_get_n_results
5112                                 (EV_DOCUMENT_FIND (view->document),
5113                                  view->current_page);
5114                 /* TRANS: Sometimes this could be better translated as
5115                    "%d hit(s) on this page".  Therefore this string
5116                    contains plural cases. */
5117                 message = g_strdup_printf (ngettext ("%d found on this page",
5118                                                      "%d found on this page",
5119                                                      results),
5120                                            results);
5121         } else {
5122                 double percent;
5123
5124                 percent = ev_document_find_get_progress
5125                                 (EV_DOCUMENT_FIND (view->document));
5126                 message = g_strdup_printf (_("%3d%% remaining to search"),
5127                                            (int) ((1.0 - percent) * 100));
5128
5129         }
5130         ev_view_set_find_status (view, message);
5131         g_free (message);
5132 }
5133
5134 const char *
5135 ev_view_get_find_status (EvView *view)
5136 {
5137         g_return_val_if_fail (EV_IS_VIEW (view), NULL);
5138
5139         return view->find_status;
5140 }
5141
5142 static void
5143 ev_view_set_find_status (EvView *view, const char *message)
5144 {
5145         g_return_if_fail (EV_IS_VIEW (view));
5146
5147         g_free (view->find_status);
5148         view->find_status = g_strdup (message);
5149         g_object_notify (G_OBJECT (view), "find-status");
5150 }
5151
5152 static void
5153 jump_to_find_result (EvView *view)
5154 {
5155         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
5156         EvRectangle rect;
5157         GdkRectangle view_rect;
5158         int n_results;
5159         int page = view->current_page;
5160
5161         n_results = ev_document_find_get_n_results (find, page);
5162
5163         if (n_results > 0  && view->find_result < n_results) {
5164                 ev_document_find_get_result
5165                         (find, page, view->find_result, &rect);
5166
5167                 doc_rect_to_view_rect (view, page, &rect, &view_rect);
5168                 ensure_rectangle_is_visible (view, &view_rect);
5169         }
5170 }
5171
5172 /**
5173  * jump_to_find_page
5174  * @view: #EvView instance
5175  * @direction: Direction to look
5176  * @shift: Shift from current page
5177  *
5178  * Jumps to the first page that has occurences of searched word.
5179  * Uses a direction where to look and a shift from current page.
5180  *
5181  */
5182 static void
5183 jump_to_find_page (EvView *view, EvViewFindDirection direction, gint shift)
5184 {
5185         int n_pages, i;
5186
5187         n_pages = ev_page_cache_get_n_pages (view->page_cache);
5188
5189         for (i = 0; i < n_pages; i++) {
5190                 int has_results;
5191                 int page;
5192
5193                 if (direction == EV_VIEW_FIND_NEXT)
5194                         page = view->current_page + i;
5195                 else
5196                         page = view->current_page - i;
5197                 page += shift;
5198
5199                 if (page >= n_pages) {
5200                         page = page - n_pages;
5201                 }
5202                 if (page < 0)
5203                         page = page + n_pages;
5204
5205                 has_results = ev_document_find_page_has_results
5206                                 (EV_DOCUMENT_FIND (view->document), page);
5207                 if (has_results == -1) {
5208                         break;
5209                 } else if (has_results == 1) {
5210                         ev_page_cache_set_current_page (view->page_cache, page);
5211                         break;
5212                 }
5213         }
5214 }
5215
5216 gboolean
5217 ev_view_can_find_next (EvView *view)
5218 {
5219         if (EV_IS_DOCUMENT_FIND (view->document)) {
5220                 EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
5221                 int i, n_pages;
5222
5223                 n_pages = ev_page_cache_get_n_pages (view->page_cache);
5224                 for (i = 0; i < n_pages; i++) {
5225                         if (ev_document_find_get_n_results (find, i) > 0) {
5226                                 return TRUE;
5227                         }
5228                 }
5229         }
5230
5231         return FALSE;
5232 }
5233
5234 void
5235 ev_view_find_next (EvView *view)
5236 {
5237         int n_results, n_pages;
5238         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
5239
5240         n_results = ev_document_find_get_n_results (find, view->current_page);
5241
5242         n_pages = ev_page_cache_get_n_pages (view->page_cache);
5243
5244         view->find_result++;
5245
5246         if (view->find_result >= n_results) {
5247
5248                 view->find_result = 0;
5249                 jump_to_find_page (view, EV_VIEW_FIND_NEXT, 1);
5250                 jump_to_find_result (view);
5251         } else {
5252                 jump_to_find_result (view);
5253                 gtk_widget_queue_draw (GTK_WIDGET (view));
5254         }
5255 }
5256
5257 gboolean
5258 ev_view_can_find_previous (EvView *view)
5259 {
5260         if (EV_IS_DOCUMENT_FIND (view->document)) {
5261                 EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
5262                 int i, n_pages;
5263
5264                 n_pages = ev_page_cache_get_n_pages (view->page_cache);
5265                 for (i = n_pages - 1; i >= 0; i--) {
5266                         if (ev_document_find_get_n_results (find, i) > 0) {
5267                                 return TRUE;
5268                         }
5269                 }
5270         }
5271
5272         return FALSE;
5273 }
5274 void
5275 ev_view_find_previous (EvView *view)
5276 {
5277         int n_results, n_pages;
5278         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
5279         EvPageCache *page_cache;
5280
5281         page_cache = ev_page_cache_get (view->document);
5282
5283         n_results = ev_document_find_get_n_results (find, view->current_page);
5284
5285         n_pages = ev_page_cache_get_n_pages (page_cache);
5286
5287         view->find_result--;
5288
5289         if (view->find_result < 0) {
5290
5291                 jump_to_find_page (view, EV_VIEW_FIND_PREV, -1);
5292                 view->find_result = ev_document_find_get_n_results (find, view->current_page) - 1;
5293                 jump_to_find_result (view);
5294         } else {
5295                 jump_to_find_result (view);
5296                 gtk_widget_queue_draw (GTK_WIDGET (view));
5297         }
5298 }
5299
5300 void ev_view_search_changed (EvView *view)
5301 {
5302         /* search string has changed, focus on new search result */
5303         view->jump_to_find_result = TRUE;
5304 }
5305
5306 void ev_view_set_highlight_search (EvView *view, gboolean value)
5307 {
5308         view->highlight_find_results = value;
5309         gtk_widget_queue_draw (GTK_WIDGET (view));
5310 }
5311
5312 /*** Selections ***/
5313
5314 /* compute_new_selection_rect/text calculates the area currently selected by
5315  * view_rect.  each handles a different mode;
5316  */
5317 static GList *
5318 compute_new_selection_rect (EvView       *view,
5319                             GdkPoint     *start,
5320                             GdkPoint     *stop)
5321 {
5322         GdkRectangle view_rect;
5323         int n_pages, i;
5324         GList *list = NULL;
5325
5326         g_assert (view->selection_mode == EV_VIEW_SELECTION_RECTANGLE);
5327
5328         view_rect.x = MIN (start->x, stop->x);
5329         view_rect.y = MIN (start->y, stop->y);
5330         view_rect.width = MAX (start->x, stop->x) - view_rect.x;
5331         view_rect.width = MAX (start->y, stop->y) - view_rect.y;
5332
5333         n_pages = ev_page_cache_get_n_pages (view->page_cache);
5334
5335         for (i = 0; i < n_pages; i++) {
5336                 GdkRectangle page_area;
5337                 GtkBorder border;
5338
5339                 if (get_page_extents (view, i, &page_area, &border)) {
5340                         GdkRectangle overlap;
5341
5342                         if (gdk_rectangle_intersect (&page_area, &view_rect, &overlap)) {
5343                                 EvViewSelection *selection;
5344
5345                                 selection = g_new0 (EvViewSelection, 1);
5346                                 selection->page = i;
5347                                 view_rect_to_doc_rect (view, &overlap, &page_area,
5348                                                        &(selection->rect));
5349
5350                                 list = g_list_append (list, selection);
5351                         }
5352                 }
5353         }
5354
5355         return list;
5356 }
5357
5358 static gboolean
5359 gdk_rectangle_point_in (GdkRectangle *rectangle,
5360                         GdkPoint     *point)
5361 {
5362         return rectangle->x <= point->x &&
5363                 rectangle->y <= point->y &&
5364                 point->x < rectangle->x + rectangle->width &&
5365                 point->y < rectangle->y + rectangle->height;
5366 }
5367
5368 static GList *
5369 compute_new_selection_text (EvView          *view,
5370                             EvSelectionStyle style,
5371                             GdkPoint        *start,
5372                             GdkPoint        *stop)
5373 {
5374         int n_pages, i, first, last;
5375         GList *list = NULL;
5376         EvViewSelection *selection;
5377         gint width, height;
5378         int start_page, end_page;
5379
5380         g_assert (view->selection_mode == EV_VIEW_SELECTION_TEXT);
5381
5382         n_pages = ev_page_cache_get_n_pages (view->page_cache);
5383
5384         /* First figure out the range of pages the selection
5385          * affects. */
5386         first = n_pages;
5387         last = 0;
5388         if (view->continuous) {
5389                 start_page = 0;
5390                 end_page = n_pages;
5391         } else if (view->dual_page) {
5392                 start_page = view->start_page;
5393                 end_page = view->end_page + 1;
5394         } else {
5395                 start_page = view->current_page;
5396                 end_page = view->current_page + 1;
5397         }
5398
5399         for (i = start_page; i < end_page; i++) {
5400                 GdkRectangle page_area;
5401                 GtkBorder border;
5402
5403                 get_page_extents (view, i, &page_area, &border);
5404                 if (gdk_rectangle_point_in (&page_area, start) ||
5405                     gdk_rectangle_point_in (&page_area, stop)) {
5406                         if (first == n_pages)
5407                                 first = i;
5408                         last = i;
5409                 }
5410
5411         }
5412
5413         /* Now create a list of EvViewSelection's for the affected
5414          * pages.  This could be an empty list, a list of just one
5415          * page or a number of pages.*/
5416         for (i = first; i < last + 1; i++) {
5417                 GdkRectangle page_area;
5418                 GtkBorder border;
5419                 GdkPoint *point;
5420
5421                 ev_page_cache_get_size (view->page_cache, i,
5422                                         view->rotation,
5423                                         1.0, &width, &height);
5424
5425                 selection = g_new0 (EvViewSelection, 1);
5426                 selection->page = i;
5427                 selection->style = style;
5428                 selection->rect.x1 = selection->rect.y1 = 0;
5429                 selection->rect.x2 = width;
5430                 selection->rect.y2 = height;
5431
5432                 get_page_extents (view, i, &page_area, &border);
5433
5434                 if (gdk_rectangle_point_in (&page_area, start))
5435                         point = start;
5436                 else
5437                         point = stop;
5438
5439                 if (i == first)
5440                         view_point_to_doc_point (view, point, &page_area,
5441                                                  &selection->rect.x1,
5442                                                  &selection->rect.y1);
5443
5444                 /* If the selection is contained within just one page,
5445                  * make sure we don't write 'start' into both points
5446                  * in selection->rect. */
5447                 if (first == last)
5448                         point = stop;
5449
5450                 if (i == last)
5451                         view_point_to_doc_point (view, point, &page_area,
5452                                                  &selection->rect.x2,
5453                                                  &selection->rect.y2);
5454
5455                 list = g_list_append (list, selection);
5456         }
5457
5458         return list;
5459 }
5460
5461 /* This function takes the newly calculated list, and figures out which regions
5462  * have changed.  It then queues a redraw approporiately.
5463  */
5464 static void
5465 merge_selection_region (EvView *view,
5466                         GList  *new_list)
5467 {
5468         GList *old_list;
5469         GList *new_list_ptr, *old_list_ptr;
5470
5471         /* Update the selection */
5472         old_list = ev_pixbuf_cache_get_selection_list (view->pixbuf_cache);
5473         g_list_foreach (view->selection_info.selections, (GFunc)selection_free, NULL);
5474         view->selection_info.selections = new_list;
5475         ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, new_list);
5476         g_object_notify (G_OBJECT (view), "has-selection");
5477
5478         new_list_ptr = new_list;
5479         old_list_ptr = old_list;
5480
5481         while (new_list_ptr || old_list_ptr) {
5482                 EvViewSelection *old_sel, *new_sel;
5483                 int cur_page;
5484                 GdkRegion *region = NULL;
5485
5486                 new_sel = (new_list_ptr) ? (new_list_ptr->data) : NULL;
5487                 old_sel = (old_list_ptr) ? (old_list_ptr->data) : NULL;
5488
5489                 /* Assume that the lists are in order, and we run through them
5490                  * comparing them, one page at a time.  We come out with the
5491                  * first page we see. */
5492                 if (new_sel && old_sel) {
5493                         if (new_sel->page < old_sel->page) {
5494                                 new_list_ptr = new_list_ptr->next;
5495                                 old_sel = NULL;
5496                         } else if (new_sel->page > old_sel->page) {
5497                                 old_list_ptr = old_list_ptr->next;
5498                                 new_sel = NULL;
5499                         } else {
5500                                 new_list_ptr = new_list_ptr->next;
5501                                 old_list_ptr = old_list_ptr->next;
5502                         }
5503                 } else if (new_sel) {
5504                         new_list_ptr = new_list_ptr->next;
5505                 } else if (old_sel) {
5506                         old_list_ptr = old_list_ptr->next;
5507                 }
5508
5509                 g_assert (new_sel || old_sel);
5510
5511                 /* is the page we're looking at on the screen?*/
5512                 cur_page = new_sel ? new_sel->page : old_sel->page;
5513                 if (cur_page < view->start_page || cur_page > view->end_page)
5514                         continue;
5515
5516                 /* seed the cache with a new page.  We are going to need the new
5517                  * region too. */
5518                 if (new_sel) {
5519                         GdkRegion *tmp_region = NULL;
5520
5521                         ev_pixbuf_cache_get_selection_surface (view->pixbuf_cache,
5522                                                                cur_page,
5523                                                                view->scale,
5524                                                                &tmp_region);
5525
5526                         if (tmp_region) {
5527                                 new_sel->covered_region = gdk_region_copy (tmp_region);
5528                         }
5529                 }
5530
5531                 /* Now we figure out what needs redrawing */
5532                 if (old_sel && new_sel) {
5533                         if (old_sel->covered_region && new_sel->covered_region) {
5534                                 /* We only want to redraw the areas that have
5535                                  * changed, so we xor the old and new regions
5536                                  * and redraw if it's different */
5537                                 region = gdk_region_copy (old_sel->covered_region);
5538                                 gdk_region_xor (region, new_sel->covered_region);
5539                                 if (gdk_region_empty (region)) {
5540                                         gdk_region_destroy (region);
5541                                         region = NULL;
5542                                 }
5543                         } else if (old_sel->covered_region) {
5544                                 region = gdk_region_copy (old_sel->covered_region);
5545                         } else if (new_sel->covered_region) {
5546                                 region = gdk_region_copy (new_sel->covered_region);
5547                         }
5548                 } else if (old_sel && !new_sel) {
5549                         if (old_sel->covered_region && !gdk_region_empty (old_sel->covered_region)) {
5550                                 region = gdk_region_copy (old_sel->covered_region);
5551                         }
5552                 } else if (!old_sel && new_sel) {
5553                         if (new_sel->covered_region && !gdk_region_empty (new_sel->covered_region)) {
5554                                 region = gdk_region_copy (new_sel->covered_region);
5555                         }
5556                 } else {
5557                         g_assert_not_reached ();
5558                 }
5559
5560                 /* Redraw the damaged region! */
5561                 if (region) {
5562                         GdkRectangle page_area;
5563                         GtkBorder border;
5564
5565                         /* I don't know why but the region is smaller
5566                          * than expected. This hack fixes it, I guess
5567                          * 10 pixels more won't hurt
5568                          */
5569                         gdk_region_shrink (region, -5, -5);
5570
5571                         get_page_extents (view, cur_page, &page_area, &border);
5572                         gdk_region_offset (region,
5573                                            page_area.x + border.left - view->scroll_x,
5574                                            page_area.y + border.top - view->scroll_y);
5575                         gdk_window_invalidate_region (view->layout.bin_window, region, TRUE);
5576                         gdk_region_destroy (region);
5577                 }
5578         }
5579
5580         /* Free the old list, now that we're done with it. */
5581         g_list_foreach (old_list, (GFunc) selection_free, NULL);
5582 }
5583
5584 static void
5585 compute_selections (EvView          *view,
5586                     EvSelectionStyle style,
5587                     GdkPoint        *start,
5588                     GdkPoint        *stop)
5589 {
5590         GList *list;
5591
5592         if (view->selection_mode == EV_VIEW_SELECTION_RECTANGLE)
5593                 list = compute_new_selection_rect (view, start, stop);
5594         else
5595                 list = compute_new_selection_text (view, style, start, stop);
5596         merge_selection_region (view, list);
5597 }
5598
5599 /* Free's the selection.  It's up to the caller to queue redraws if needed.
5600  */
5601 static void
5602 selection_free (EvViewSelection *selection)
5603 {
5604         if (selection->covered_region)
5605                 gdk_region_destroy (selection->covered_region);
5606         g_free (selection);
5607 }
5608
5609 static void
5610 clear_selection (EvView *view)
5611 {
5612         g_list_foreach (view->selection_info.selections, (GFunc)selection_free, NULL);
5613         view->selection_info.selections = NULL;
5614         view->selection_info.in_selection = FALSE;
5615         if (view->pixbuf_cache)
5616                 ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, NULL);
5617         g_object_notify (G_OBJECT (view), "has-selection");
5618 }
5619
5620 void
5621 ev_view_select_all (EvView *view)
5622 {
5623         GList *selections = NULL;
5624         int n_pages, i;
5625
5626         /* Disable selection on rotated pages for the 0.4.0 series */
5627         if (view->rotation != 0)
5628                 return;
5629
5630         clear_selection (view);
5631
5632         n_pages = ev_page_cache_get_n_pages (view->page_cache);
5633         for (i = 0; i < n_pages; i++) {
5634                 int width, height;
5635                 EvViewSelection *selection;
5636
5637                 ev_page_cache_get_size (view->page_cache,
5638                                         i,
5639                                         view->rotation,
5640                                         1.0, &width, &height);
5641
5642                 selection = g_new0 (EvViewSelection, 1);
5643                 selection->page = i;
5644                 selection->style = EV_SELECTION_STYLE_GLYPH;
5645                 selection->rect.x1 = selection->rect.y1 = 0;
5646                 selection->rect.x2 = width;
5647                 selection->rect.y2 = height;
5648
5649                 selections = g_list_append (selections, selection);
5650         }
5651
5652         merge_selection_region (view, selections);
5653         gtk_widget_queue_draw (GTK_WIDGET (view));
5654 }
5655
5656 gboolean
5657 ev_view_get_has_selection (EvView *view)
5658 {
5659         return view->selection_info.selections != NULL;
5660 }
5661
5662 static char *
5663 get_selected_text (EvView *view)
5664 {
5665         GString *text;
5666         GList *l;
5667         gchar *normalized_text;
5668         EvRenderContext *rc;
5669
5670         text = g_string_new (NULL);
5671         rc = ev_render_context_new (view->rotation, 1, view->scale);
5672
5673         ev_document_doc_mutex_lock ();
5674
5675         for (l = view->selection_info.selections; l != NULL; l = l->next) {
5676                 EvViewSelection *selection = (EvViewSelection *)l->data;
5677                 gchar *tmp;
5678
5679                 ev_render_context_set_page (rc, selection->page);
5680                 tmp = ev_selection_get_selected_text (EV_SELECTION (view->document),
5681                                                       rc, selection->style,
5682                                                       &(selection->rect));
5683
5684                 g_string_append (text, tmp);
5685                 g_free (tmp);
5686         }
5687
5688         ev_document_doc_mutex_unlock ();
5689
5690         g_object_unref (rc);
5691
5692         normalized_text = g_utf8_normalize (text->str, text->len, G_NORMALIZE_NFKC);
5693         g_string_free (text, TRUE);
5694         return normalized_text;
5695 }
5696
5697 void
5698 ev_view_copy (EvView *ev_view)
5699 {
5700         GtkClipboard *clipboard;
5701         char *text;
5702
5703         if (!EV_IS_SELECTION (ev_view->document))
5704                 return;
5705
5706         text = get_selected_text (ev_view);
5707         clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view),
5708                                               GDK_SELECTION_CLIPBOARD);
5709         gtk_clipboard_set_text (clipboard, text, -1);
5710         g_free (text);
5711 }
5712
5713 static void
5714 ev_view_primary_get_cb (GtkClipboard     *clipboard,
5715                         GtkSelectionData *selection_data,
5716                         guint             info,
5717                         gpointer          data)
5718 {
5719         EvView *ev_view = EV_VIEW (data);
5720         char *text;
5721
5722         if (!EV_IS_SELECTION (ev_view->document))
5723                 return;
5724
5725         text = get_selected_text (ev_view);
5726         if (text) {
5727                 gtk_selection_data_set_text (selection_data, text, -1);
5728                 g_free (text);
5729         }
5730 }
5731
5732 static void
5733 ev_view_primary_clear_cb (GtkClipboard *clipboard,
5734                           gpointer      data)
5735 {
5736         EvView *view = EV_VIEW (data);
5737
5738         clear_selection (view);
5739 }
5740
5741 static void
5742 ev_view_update_primary_selection (EvView *ev_view)
5743 {
5744         GtkClipboard *clipboard;
5745
5746         clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view),
5747                                               GDK_SELECTION_PRIMARY);
5748
5749         if (ev_view->selection_info.selections) {
5750                 if (!gtk_clipboard_set_with_owner (clipboard,
5751                                                    clipboard_targets,
5752                                                    G_N_ELEMENTS (clipboard_targets),
5753                                                    ev_view_primary_get_cb,
5754                                                    ev_view_primary_clear_cb,
5755                                                    G_OBJECT (ev_view)))
5756                         ev_view_primary_clear_cb (clipboard, ev_view);
5757         } else {
5758                 if (gtk_clipboard_get_owner (clipboard) == G_OBJECT (ev_view))
5759                         gtk_clipboard_clear (clipboard);
5760         }
5761 }
5762
5763 /*** Cursor operations ***/
5764
5765 static GdkCursor *
5766 ev_view_create_invisible_cursor(void)
5767 {
5768        GdkBitmap *empty;
5769        GdkColor black = { 0, 0, 0, 0 };
5770        static char bits[] = { 0x00 };
5771
5772        empty = gdk_bitmap_create_from_data (NULL, bits, 1, 1);
5773
5774        return gdk_cursor_new_from_pixmap (empty, empty, &black, &black, 0, 0);
5775 }
5776
5777 static void
5778 ev_view_set_cursor (EvView *view, EvViewCursor new_cursor)
5779 {
5780         GdkCursor *cursor = NULL;
5781         GdkDisplay *display;
5782         GtkWidget *widget;
5783
5784         if (view->cursor == new_cursor) {
5785                 return;
5786         }
5787
5788         widget = gtk_widget_get_toplevel (GTK_WIDGET (view));
5789         display = gtk_widget_get_display (widget);
5790         view->cursor = new_cursor;
5791
5792         switch (new_cursor) {
5793                 case EV_VIEW_CURSOR_NORMAL:
5794                         gdk_window_set_cursor (view->layout.bin_window, NULL);
5795                         break;
5796                 case EV_VIEW_CURSOR_IBEAM:
5797                         cursor = gdk_cursor_new_for_display (display, GDK_XTERM);
5798                         break;
5799                 case EV_VIEW_CURSOR_LINK:
5800                         cursor = gdk_cursor_new_for_display (display, GDK_HAND2);
5801                         break;
5802                 case EV_VIEW_CURSOR_WAIT:
5803                         cursor = gdk_cursor_new_for_display (display, GDK_WATCH);
5804                         break;
5805                 case EV_VIEW_CURSOR_HIDDEN:
5806                         cursor = ev_view_create_invisible_cursor ();
5807                         break;
5808                 case EV_VIEW_CURSOR_DRAG:
5809                         cursor = gdk_cursor_new_for_display (display, GDK_FLEUR);
5810                         break;
5811                 case EV_VIEW_CURSOR_AUTOSCROLL:
5812                         cursor = gdk_cursor_new_for_display (display, GDK_DOUBLE_ARROW);
5813                         break;
5814         }
5815
5816         if (cursor) {
5817                 gdk_window_set_cursor (view->layout.bin_window, cursor);
5818                 gdk_cursor_unref (cursor);
5819                 gdk_flush();
5820         }
5821 }
5822
5823 void
5824 ev_view_hide_cursor (EvView *view)
5825 {
5826        ev_view_set_cursor (view, EV_VIEW_CURSOR_HIDDEN);
5827 }
5828
5829 void
5830 ev_view_show_cursor (EvView *view)
5831 {
5832        ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
5833 }
5834
5835 static void
5836 ev_view_reset_presentation_state (EvView *view)
5837 {
5838         if (!view->presentation ||
5839             view->presentation_state == EV_PRESENTATION_NORMAL)
5840                 return;
5841
5842         view->presentation_state = EV_PRESENTATION_NORMAL;
5843         gdk_window_set_background (view->layout.bin_window,
5844                                    &GTK_WIDGET (view)->style->black);
5845         gtk_widget_queue_draw (GTK_WIDGET (view));
5846 }
5847
5848 gboolean
5849 ev_view_next_page (EvView *view)
5850 {
5851         int page, n_pages;
5852
5853         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
5854
5855         if (!view->page_cache)
5856                 return FALSE;
5857
5858         if (view->presentation &&
5859             (view->presentation_state == EV_PRESENTATION_BLACK ||
5860              view->presentation_state == EV_PRESENTATION_WHITE)) {
5861                 ev_view_reset_presentation_state (view);
5862                 return FALSE;
5863         }
5864
5865         if (view->animation) {
5866                 ev_view_transition_animation_finish (view->animation, view);
5867                 return TRUE;
5868         }
5869
5870         ev_view_presentation_transition_stop (view);
5871         ev_view_reset_presentation_state (view);
5872
5873         page = ev_page_cache_get_current_page (view->page_cache);
5874         n_pages = ev_page_cache_get_n_pages (view->page_cache);
5875
5876         if (view->dual_page && !view->presentation)
5877                 page = page + 2;
5878         else
5879                 page = page + 1;
5880
5881         if (page < n_pages) {
5882                 ev_page_cache_set_current_page (view->page_cache, page);
5883                 return TRUE;
5884         } else if (view->presentation && page == n_pages) {
5885                 view->presentation_state = EV_PRESENTATION_END;
5886                 gtk_widget_queue_draw (GTK_WIDGET (view));
5887                 return TRUE;
5888         } else if (view->dual_page && page == n_pages) {
5889                 ev_page_cache_set_current_page (view->page_cache, page - 1);
5890                 return TRUE;
5891         } else {
5892                 return FALSE;
5893         }
5894 }
5895
5896 gboolean
5897 ev_view_previous_page (EvView *view)
5898 {
5899         int page;
5900
5901         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
5902
5903         if (!view->page_cache)
5904                 return FALSE;
5905
5906         if (view->presentation &&
5907             view->presentation_state == EV_PRESENTATION_END) {
5908                 ev_view_reset_presentation_state (view);
5909                 return TRUE;
5910         }
5911
5912         if (view->presentation &&
5913             (view->presentation_state == EV_PRESENTATION_BLACK ||
5914              view->presentation_state == EV_PRESENTATION_WHITE)) {
5915                 ev_view_reset_presentation_state (view);
5916                 return FALSE;
5917         }
5918
5919         if (view->animation) {
5920                 ev_view_transition_animation_finish (view->animation, view);
5921                 return TRUE;
5922         }
5923
5924         ev_view_reset_presentation_state (view);
5925
5926         page = ev_page_cache_get_current_page (view->page_cache);
5927
5928         if (view->dual_page && !view->presentation)
5929                 page = page - 2;
5930         else
5931                 page = page - 1;
5932
5933         if (page >= 0) {
5934                 ev_page_cache_set_current_page (view->page_cache, page);
5935                 return TRUE;
5936         } else if (ev_view_get_dual_page (view) && page == -1) {
5937                 ev_page_cache_set_current_page (view->page_cache, 0);
5938                 return TRUE;
5939         } else {
5940                 return FALSE;
5941         }
5942 }
5943
5944 /*** Enum description for usage in signal ***/
5945
5946 GType
5947 ev_sizing_mode_get_type (void)
5948 {
5949   static GType etype = 0;
5950   if (etype == 0) {
5951     static const GEnumValue values[] = {
5952       { EV_SIZING_FIT_WIDTH, "EV_SIZING_FIT_WIDTH", "fit-width" },
5953       { EV_SIZING_BEST_FIT, "EV_SIZING_BEST_FIT", "best-fit" },
5954       { EV_SIZING_FREE, "EV_SIZING_FREE", "free" },
5955       { 0, NULL, NULL }
5956     };
5957     etype = g_enum_register_static ("EvSizingMode", values);
5958   }
5959   return etype;
5960 }
5961
5962 GType
5963 ev_scroll_type_get_type (void)
5964 {
5965   static GType etype = 0;
5966   if (etype == 0) {
5967     static const GEnumValue values[] = {
5968       { EV_SCROLL_PAGE_FORWARD, "EV_SCROLL_PAGE_FORWARD", "scroll-page-forward" },
5969       { EV_SCROLL_PAGE_BACKWARD, "EV_SCROLL_PAGE_BACKWARD", "scroll-page-backward" },
5970       { EV_SCROLL_STEP_FORWARD, "EV_SCROLL_STEP_FORWARD", "scroll-step-forward" },
5971       { EV_SCROLL_STEP_FORWARD, "EV_SCROLL_STEP_FORWARD", "scroll-step-forward" },
5972       { EV_SCROLL_STEP_UP, "EV_SCROLL_STEP_UP", "scroll-step-up" },
5973       { EV_SCROLL_STEP_DOWN, "EV_SCROLL_STEP_DOWN", "scroll-step-down" },
5974       { 0, NULL, NULL }
5975     };
5976     etype = g_enum_register_static ("EvScrollType", values);
5977   }
5978   return etype;
5979 }
5980
5981 void
5982 ev_view_update_view_size (EvView *view, GtkScrolledWindow * scrolled_window)
5983 {
5984         int width, height;
5985         GtkRequisition vsb_requisition;
5986         GtkRequisition hsb_requisition;
5987         int scrollbar_spacing;
5988
5989         /* Calculate the width available for the content */
5990         width  = GTK_WIDGET (scrolled_window)->allocation.width;
5991         height = GTK_WIDGET (scrolled_window)->allocation.height;
5992
5993         if (gtk_scrolled_window_get_shadow_type (scrolled_window) == GTK_SHADOW_IN
5994             && view) {
5995                 width -=  2 * GTK_WIDGET(view)->style->xthickness;
5996                 height -= 2 * GTK_WIDGET(view)->style->ythickness;
5997         }
5998
5999         gtk_widget_size_request (scrolled_window->vscrollbar, &vsb_requisition);
6000         gtk_widget_size_request (scrolled_window->hscrollbar, &hsb_requisition);
6001         gtk_widget_style_get (GTK_WIDGET (scrolled_window),
6002                               "scrollbar_spacing",
6003                               &scrollbar_spacing,
6004                               NULL);
6005
6006         if (EV_IS_VIEW(view)) {
6007                 ev_view_set_zoom_for_size (EV_VIEW (view),
6008                                            MAX (1, width),
6009                                            MAX (1, height),
6010                                            vsb_requisition.width + scrollbar_spacing,
6011                                            hsb_requisition.height + scrollbar_spacing);
6012         }
6013 }