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         /* Shift+Wheel scrolls the in the perpendicular direction */
2389         if (state & GDK_SHIFT_MASK) {
2390                 if (event->direction == GDK_SCROLL_UP)
2391                         event->direction = GDK_SCROLL_LEFT;
2392                 if (event->direction == GDK_SCROLL_LEFT)
2393                         event->direction = GDK_SCROLL_UP;
2394                 if (event->direction == GDK_SCROLL_DOWN)
2395                         event->direction = GDK_SCROLL_RIGHT;
2396                 if (event->direction == GDK_SCROLL_RIGHT)
2397                         event->direction = GDK_SCROLL_DOWN;
2398
2399                 event->state &= ~GDK_SHIFT_MASK;
2400                 state &= ~GDK_SHIFT_MASK;
2401         }
2402
2403         if (state == 0 && view->presentation) {
2404                 switch (event->direction) {
2405                         case GDK_SCROLL_DOWN:
2406                         case GDK_SCROLL_RIGHT:
2407                                 ev_view_next_page (view);
2408                                 break;
2409                         case GDK_SCROLL_UP:
2410                         case GDK_SCROLL_LEFT:
2411                                 ev_view_previous_page (view);
2412                                 break;
2413                 }
2414
2415                 return TRUE;
2416         }
2417
2418         return FALSE;
2419 }
2420
2421 static EvViewSelection *
2422 find_selection_for_page (EvView *view,
2423                          gint    page)
2424 {
2425         GList *list;
2426
2427         for (list = view->selection_info.selections; list != NULL; list = list->next) {
2428                 EvViewSelection *selection;
2429
2430                 selection = (EvViewSelection *) list->data;
2431
2432                 if (selection->page == page)
2433                         return selection;
2434         }
2435
2436         return NULL;
2437 }
2438
2439 static void
2440 draw_end_presentation_page (EvView       *view,
2441                             GdkRectangle *page_area)
2442 {
2443         PangoLayout *layout;
2444         PangoFontDescription *font_desc;
2445         gchar *markup;
2446         const gchar *text = _("End of presentation. Press Escape to exit.");
2447
2448         if (view->presentation_state != EV_PRESENTATION_END)
2449                 return;
2450
2451         layout = gtk_widget_create_pango_layout (GTK_WIDGET (view), NULL);
2452         markup = g_strdup_printf ("<span foreground=\"white\">%s</span>", text);
2453         pango_layout_set_markup (layout, markup, -1);
2454         g_free (markup);
2455
2456         font_desc = pango_font_description_new ();
2457         pango_font_description_set_size (font_desc, 16 * PANGO_SCALE);
2458         pango_layout_set_font_description (layout, font_desc);
2459
2460         gtk_paint_layout (GTK_WIDGET (view)->style,
2461                           view->layout.bin_window,
2462                           GTK_WIDGET_STATE (view),
2463                           FALSE,
2464                           page_area,
2465                           GTK_WIDGET (view),
2466                           NULL,
2467                           page_area->x + 15,
2468                           page_area->y + 15,
2469                           layout);
2470
2471         pango_font_description_free (font_desc);
2472         g_object_unref (layout);
2473 }
2474
2475 static gboolean
2476 ev_view_expose_event (GtkWidget      *widget,
2477                       GdkEventExpose *event)
2478 {
2479         EvView  *view = EV_VIEW (widget);
2480         cairo_t *cr;
2481         gint     i;
2482
2483         if (view->animation) {
2484                 GdkRectangle page_area;
2485                 GtkBorder    border;
2486
2487                 if (get_page_extents (view, view->current_page, &page_area, &border)) {
2488                         cr = gdk_cairo_create (view->layout.bin_window);
2489
2490                         /* normalize to x=0, y=0 */
2491                         cairo_translate (cr, page_area.x, page_area.y);
2492                         page_area.x = page_area.y = 0;
2493
2494                         ev_transition_animation_paint (view->animation, cr, page_area);
2495                         cairo_destroy (cr);
2496                 }
2497
2498                 return TRUE;
2499         }
2500
2501         if (view->presentation) {
2502                 switch (view->presentation_state) {
2503                         case EV_PRESENTATION_END: {
2504                                 GdkRectangle area = {0};
2505
2506                                 area.width = widget->allocation.width;
2507                                 area.height = widget->allocation.height;
2508
2509                                 draw_end_presentation_page (view, &area);
2510                         }
2511                                 return FALSE;
2512                         case EV_PRESENTATION_BLACK:
2513                         case EV_PRESENTATION_WHITE:
2514                                 return FALSE;
2515                         case EV_PRESENTATION_NORMAL:
2516                         default:
2517                                 break;
2518                 }
2519         } else if (view->loading) {
2520                 GdkRectangle area = {0};
2521
2522                 area.width = widget->allocation.width;
2523                 area.height = widget->allocation.height;
2524
2525                 draw_loading_text (view,
2526                                    &area,
2527                                    &(event->area));
2528         }
2529
2530         if (view->document == NULL)
2531                 return FALSE;
2532
2533         cr = gdk_cairo_create (view->layout.bin_window);
2534
2535         for (i = view->start_page; i <= view->end_page; i++) {
2536                 GdkRectangle page_area;
2537                 GtkBorder border;
2538                 gboolean page_ready = TRUE;
2539
2540                 if (!get_page_extents (view, i, &page_area, &border))
2541                         continue;
2542
2543                 page_area.x -= view->scroll_x;
2544                 page_area.y -= view->scroll_y;
2545
2546                 draw_one_page (view, i, cr, &page_area, &border, &(event->area), &page_ready);
2547
2548                 if (page_ready && EV_IS_DOCUMENT_FIND (view->document) && view->highlight_find_results)
2549                         highlight_find_results (view, i);
2550         }
2551
2552         cairo_destroy (cr);
2553
2554         if (GTK_WIDGET_CLASS (ev_view_parent_class)->expose_event)
2555                 (* GTK_WIDGET_CLASS (ev_view_parent_class)->expose_event) (widget, event);
2556
2557         return FALSE;
2558 }
2559
2560 static gboolean
2561 ev_view_do_popup_menu (EvView *view,
2562                        gdouble x,
2563                        gdouble y)
2564 {
2565         EvLink  *link;
2566         EvImage *image;
2567
2568         image = ev_view_get_image_at_location (view, x, y);
2569         if (image) {
2570                 g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, image);
2571                 return TRUE;
2572         }
2573
2574         link = ev_view_get_link_at_location (view, x, y);
2575         if (link) {
2576                 g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, link);
2577                 return TRUE;
2578         }
2579
2580         g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, NULL);
2581
2582         return TRUE;
2583 }
2584
2585 static gboolean
2586 ev_view_popup_menu (GtkWidget *widget)
2587 {
2588         gint x, y;
2589
2590         gtk_widget_get_pointer (widget, &x, &y);
2591         return ev_view_do_popup_menu (EV_VIEW (widget), x, y);
2592 }
2593
2594 #if GTK_CHECK_VERSION (2, 11, 7)
2595 static void
2596 get_link_area (EvView       *view,
2597                gint          x,
2598                gint          y,
2599                EvLink       *link,
2600                GdkRectangle *area)
2601 {
2602         EvRectangle  ev_rect;
2603         GList       *link_mapping;
2604         gint         page;
2605         gint         x_offset = 0, y_offset = 0;
2606
2607         x += view->scroll_x;
2608         y += view->scroll_y;
2609
2610         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
2611
2612         link_mapping = ev_pixbuf_cache_get_link_mapping (view->pixbuf_cache, page);
2613         ev_link_mapping_get_area (link_mapping, link, &ev_rect);
2614
2615         doc_rect_to_view_rect (view, page, &ev_rect, area);
2616         area->y -= view->scroll_y ;
2617 }
2618
2619 static gboolean
2620 ev_view_query_tooltip (GtkWidget         *widget,
2621                        gint               x,
2622                        gint               y,
2623                        gboolean           keyboard_tip,
2624                        GtkTooltip        *tooltip)
2625 {
2626         EvView *view = EV_VIEW (widget);
2627         EvLink *link;
2628         gchar  *text;
2629
2630         link = ev_view_get_link_at_location (view, x, y);
2631         if (!link)
2632                 return FALSE;
2633
2634         text = tip_from_link (view, link);
2635         if (text && g_utf8_validate (text, -1, NULL)) {
2636                 GdkRectangle link_area;
2637
2638                 get_link_area (view, x, y, link, &link_area);
2639                 gtk_tooltip_set_text (tooltip, text);
2640                 gtk_tooltip_set_tip_area (tooltip, &link_area);
2641         }
2642         g_free (text);
2643
2644         return TRUE;
2645 }
2646 #endif /* GTK_CHECK_VERSION (2, 11, 7) */
2647
2648 static void
2649 start_selection_for_event (EvView         *view,
2650                            GdkEventButton *event)
2651 {
2652         EvSelectionStyle style;
2653
2654         clear_selection (view);
2655
2656         view->selection_info.start.x = event->x + view->scroll_x;
2657         view->selection_info.start.y = event->y + view->scroll_y;
2658
2659         switch (event->type) {
2660                 case GDK_2BUTTON_PRESS:
2661                         style = EV_SELECTION_STYLE_WORD;
2662                         break;
2663                 case GDK_3BUTTON_PRESS:
2664                         style = EV_SELECTION_STYLE_LINE;
2665                         break;
2666                 default:
2667                         style = EV_SELECTION_STYLE_GLYPH;
2668                         break;
2669         }
2670
2671         view->selection_info.style = style;
2672 }
2673
2674 static gboolean
2675 ev_view_button_press_event (GtkWidget      *widget,
2676                             GdkEventButton *event)
2677 {
2678         EvView *view = EV_VIEW (widget);
2679
2680         if (!view->document)
2681                 return FALSE;
2682
2683         if (!GTK_WIDGET_HAS_FOCUS (widget)) {
2684                 gtk_widget_grab_focus (widget);
2685         }
2686
2687         view->pressed_button = event->button;
2688         view->selection_info.in_drag = FALSE;
2689
2690         switch (event->button) {
2691                 case 1: {
2692
2693                         if (view->scroll_info.autoscrolling == TRUE) {
2694                                 view->scroll_info.autoscrolling = FALSE;
2695                                 return TRUE;
2696                         }
2697
2698                         EvImage *image;
2699                         EvFormField *field;
2700
2701                         if (EV_IS_SELECTION (view->document) && view->selection_info.selections) {
2702                                 if (event->type == GDK_3BUTTON_PRESS) {
2703                                         start_selection_for_event (view, event);
2704                                 } else if (location_in_selected_text (view,
2705                                                                event->x + view->scroll_x,
2706                                                                event->y + view->scroll_y)) {
2707                                         view->selection_info.in_drag = TRUE;
2708                                 } else {
2709                                         start_selection_for_event (view, event);
2710                                 }
2711
2712                                 gtk_widget_queue_draw (widget);
2713                         } else if ((field = ev_view_get_form_field_at_location (view, event->x, event->y))) {
2714                                 ev_view_remove_all (view);
2715                                 ev_view_handle_form_field (view, field, event->x, event->y);
2716                         } else if (!location_in_text (view, event->x + view->scroll_x, event->y + view->scroll_y) &&
2717                                    (image = ev_view_get_image_at_location (view, event->x, event->y))) {
2718                                 if (view->image_dnd_info.image)
2719                                         g_object_unref (view->image_dnd_info.image);
2720                                 view->image_dnd_info.image = g_object_ref (image);
2721                                 view->image_dnd_info.in_drag = TRUE;
2722
2723                                 view->image_dnd_info.start.x = event->x + view->scroll_x;
2724                                 view->image_dnd_info.start.y = event->y + view->scroll_y;
2725                         } else {
2726                                 ev_view_remove_all (view);
2727
2728                                 if (EV_IS_SELECTION (view->document))
2729                                         start_selection_for_event (view, event);
2730                         }
2731                 }
2732                         return TRUE;
2733                 case 2:
2734                         /* use root coordinates as reference point because
2735                          * scrolling changes window relative coordinates */
2736                         if (view->scroll_info.autoscrolling == TRUE) {
2737                                 view->scroll_info.autoscrolling = FALSE;
2738                                 return TRUE;
2739                         }
2740                         view->drag_info.start.x = event->x_root;
2741                         view->drag_info.start.y = event->y_root;
2742                         view->drag_info.hadj = gtk_adjustment_get_value (view->hadjustment);
2743                         view->drag_info.vadj = gtk_adjustment_get_value (view->vadjustment);
2744
2745                         ev_view_set_cursor (view, EV_VIEW_CURSOR_DRAG);
2746
2747                         return TRUE;
2748                 case 3:
2749                         if (!view->scroll_info.autoscrolling)
2750                                 view->scroll_info.start_y = event->y;
2751                         return ev_view_do_popup_menu (view, event->x, event->y);
2752         }
2753
2754         return FALSE;
2755 }
2756
2757 static void
2758 ev_view_remove_all (EvView *view)
2759 {
2760         GList *children, *child;
2761
2762         children = gtk_container_get_children (GTK_CONTAINER (view));
2763         for (child = children; child && child->data; child = g_list_next (child)) {
2764                 gtk_container_remove (GTK_CONTAINER (view),
2765                                       GTK_WIDGET (child->data));
2766         }
2767         g_list_free (children);
2768 }
2769
2770 /*** Drag and Drop ***/
2771 static void
2772 ev_view_drag_data_get (GtkWidget        *widget,
2773                        GdkDragContext   *context,
2774                        GtkSelectionData *selection_data,
2775                        guint             info,
2776                        guint             time)
2777 {
2778         EvView *view = EV_VIEW (widget);
2779
2780         switch (info) {
2781                 case TARGET_DND_TEXT:
2782                         if (EV_IS_SELECTION (view->document) &&
2783                             view->selection_info.selections) {
2784                                 gchar *text;
2785
2786                                 text = get_selected_text (view);
2787                                 gtk_selection_data_set_text (selection_data,
2788                                                              text,
2789                                                              strlen (text));
2790                                 g_free (text);
2791                         }
2792                         break;
2793                 case TARGET_DND_IMAGE:
2794                         if (view->image_dnd_info.image) {
2795                                 GdkPixbuf *pixbuf;
2796
2797                                 pixbuf = ev_image_get_pixbuf (view->image_dnd_info.image);
2798                                 gtk_selection_data_set_pixbuf (selection_data, pixbuf);
2799                         }
2800                         break;
2801                 case TARGET_DND_URI:
2802                         if (view->image_dnd_info.image) {
2803                                 const gchar *tmp_uri;
2804                                 gchar      **uris;
2805
2806                                 tmp_uri = ev_image_save_tmp (view->image_dnd_info.image);
2807
2808                                 uris = g_new0 (gchar *, 2);
2809                                 uris[0] = (gchar *)tmp_uri;
2810
2811                                 gtk_selection_data_set_uris (selection_data, uris);
2812
2813                                 /* g_free instead of g_strfreev since tmp_uri is const */
2814                                 g_free (uris);
2815                         }
2816         }
2817 }
2818
2819 static gboolean
2820 ev_view_drag_motion (GtkWidget      *widget,
2821                      GdkDragContext *context,
2822                      gint            x,
2823                      gint            y,
2824                      guint           time)
2825 {
2826         if (gtk_drag_get_source_widget (context) == widget)
2827                 gdk_drag_status (context, 0, time);
2828         else
2829                 gdk_drag_status (context, context->suggested_action, time);
2830
2831         return TRUE;
2832 }
2833
2834 static void
2835 ev_view_drag_data_received (GtkWidget          *widget,
2836                             GdkDragContext     *context,
2837                             gint                x,
2838                             gint                y,
2839                             GtkSelectionData   *selection_data,
2840                             guint               info,
2841                             guint               time)
2842 {
2843         gchar  **uris;
2844         gint     i = 0;
2845         GSList  *uri_list = NULL;
2846
2847         uris = gtk_selection_data_get_uris (selection_data);
2848         if (!uris) {
2849                 gtk_drag_finish (context, FALSE, FALSE, time);
2850                 return;
2851         }
2852
2853         for (i = 0; uris[i]; i++) {
2854                 uri_list = g_slist_prepend (uri_list, (gpointer) uris[i]);
2855         }
2856
2857         ev_application_open_uri_list (EV_APP, uri_list,
2858                                       gtk_widget_get_screen (widget),
2859                                       0);
2860         gtk_drag_finish (context, TRUE, FALSE, time);
2861
2862         g_strfreev (uris);
2863         g_slist_free (uri_list);
2864 }
2865
2866
2867 static gboolean
2868 selection_update_idle_cb (EvView *view)
2869 {
2870         compute_selections (view,
2871                             view->selection_info.style,
2872                             &view->selection_info.start,
2873                             &view->motion);
2874         view->selection_update_id = 0;
2875         return FALSE;
2876 }
2877
2878 static gboolean
2879 selection_scroll_timeout_cb (EvView *view)
2880 {
2881         gint x, y, shift = 0;
2882         GtkWidget *widget = GTK_WIDGET (view);
2883
2884         gtk_widget_get_pointer (widget, &x, &y);
2885
2886         if (y > widget->allocation.height) {
2887                 shift = (y - widget->allocation.height) / 2;
2888         } else if (y < 0) {
2889                 shift = y / 2;
2890         }
2891
2892         if (shift)
2893                 gtk_adjustment_set_value (view->vadjustment,
2894                                           CLAMP (view->vadjustment->value + shift,
2895                                           view->vadjustment->lower,
2896                                           view->vadjustment->upper -
2897                                           view->vadjustment->page_size));
2898
2899         if (x > widget->allocation.width) {
2900                 shift = (x - widget->allocation.width) / 2;
2901         } else if (x < 0) {
2902                 shift = x / 2;
2903         }
2904
2905         if (shift)
2906                 gtk_adjustment_set_value (view->hadjustment,
2907                                           CLAMP (view->hadjustment->value + shift,
2908                                           view->hadjustment->lower,
2909                                           view->hadjustment->upper -
2910                                           view->hadjustment->page_size));
2911
2912         return TRUE;
2913 }
2914
2915 static gboolean
2916 ev_view_drag_update_momentum (EvView *view)
2917 {
2918         int i;
2919         if (!view->drag_info.in_drag)
2920                 return FALSE;
2921
2922         for (i = DRAG_HISTORY - 1; i > 0; i--) {
2923                 view->drag_info.buffer[i].x = view->drag_info.buffer[i-1].x;
2924                 view->drag_info.buffer[i].y = view->drag_info.buffer[i-1].y;
2925         }
2926
2927         /* Momentum is a moving average of 10ms granularity over
2928          * the last 100ms with each 10ms stored in buffer.
2929          */
2930
2931         view->drag_info.momentum.x = (view->drag_info.buffer[DRAG_HISTORY - 1].x - view->drag_info.buffer[0].x);
2932         view->drag_info.momentum.y = (view->drag_info.buffer[DRAG_HISTORY - 1].y - view->drag_info.buffer[0].y);
2933
2934         return TRUE;
2935 }
2936
2937 static gboolean
2938 ev_view_scroll_drag_release (EvView *view)
2939 {
2940         gdouble dhadj_value, dvadj_value;
2941         gdouble oldhadjustment, oldvadjustment;
2942
2943         view->drag_info.momentum.x /= 1.2;
2944         view->drag_info.momentum.y /= 1.2; /* Alter these constants to change "friction" */
2945
2946         dhadj_value = view->hadjustment->page_size *
2947                       (gdouble)view->drag_info.momentum.x / GTK_WIDGET (view)->allocation.width;
2948         dvadj_value = view->vadjustment->page_size *
2949                       (gdouble)view->drag_info.momentum.y / GTK_WIDGET (view)->allocation.height;
2950
2951         oldhadjustment = gtk_adjustment_get_value (view->hadjustment);
2952         oldvadjustment = gtk_adjustment_get_value (view->vadjustment);
2953
2954         if (((oldhadjustment + dhadj_value) > (view->hadjustment->upper - view->hadjustment->page_size)) ||
2955            ((oldhadjustment + dhadj_value) < 0))
2956                 view->drag_info.momentum.x *= -0.5; /* 0.5 rather than 1 means the edges absorb some momentum */
2957         if (((oldvadjustment + dvadj_value) > (view->vadjustment->upper - view->vadjustment->page_size)) ||
2958            ((oldvadjustment + dvadj_value) < 0))
2959                 view->drag_info.momentum.y *= -0.5;
2960
2961         gtk_adjustment_set_value (view->hadjustment,
2962                                 MIN (oldhadjustment + dhadj_value,
2963                                 view->hadjustment->upper - view->hadjustment->page_size));
2964         gtk_adjustment_set_value (view->vadjustment,
2965                                 MIN (oldvadjustment + dvadj_value,
2966                                 view->vadjustment->upper - view->vadjustment->page_size));
2967
2968         if (((view->drag_info.momentum.x < 1) && (view->drag_info.momentum.x > -1)) &&
2969            ((view->drag_info.momentum.y < 1) && (view->drag_info.momentum.y > -1)))
2970                 return FALSE;
2971         else
2972                 return TRUE;
2973 }
2974
2975 static gboolean
2976 ev_view_motion_notify_event (GtkWidget      *widget,
2977                              GdkEventMotion *event)
2978 {
2979         EvView *view = EV_VIEW (widget);
2980         gint x, y;
2981
2982         if (!view->document)
2983                 return FALSE;
2984
2985
2986         if (event->is_hint || event->window != view->layout.bin_window) {
2987             gtk_widget_get_pointer (widget, &x, &y);
2988         } else {
2989             x = event->x;
2990             y = event->y;
2991         }
2992
2993         if (view->scroll_info.autoscrolling) {
2994                 view->scroll_info.last_y = y;
2995         }
2996
2997         if (view->selection_info.in_drag) {
2998                 if (gtk_drag_check_threshold (widget,
2999                                               view->selection_info.start.x,
3000                                               view->selection_info.start.y,
3001                                               x, y)) {
3002                         GtkTargetList *target_list = gtk_target_list_new (NULL, 0);
3003
3004                         gtk_target_list_add_text_targets (target_list, TARGET_DND_TEXT);
3005
3006                         gtk_drag_begin (widget, target_list,
3007                                         GDK_ACTION_COPY,
3008                                         1, (GdkEvent *)event);
3009
3010                         view->selection_info.in_drag = FALSE;
3011
3012                         gtk_target_list_unref (target_list);
3013
3014                         return TRUE;
3015                 }
3016         } else if (view->image_dnd_info.in_drag) {
3017                 if (gtk_drag_check_threshold (widget,
3018                                               view->selection_info.start.x,
3019                                               view->selection_info.start.y,
3020                                               x, y)) {
3021                         GtkTargetList *target_list = gtk_target_list_new (NULL, 0);
3022
3023                         gtk_target_list_add_uri_targets (target_list, TARGET_DND_URI);
3024                         gtk_target_list_add_image_targets (target_list, TARGET_DND_IMAGE, TRUE);
3025
3026                         gtk_drag_begin (widget, target_list,
3027                                         GDK_ACTION_COPY,
3028                                         1, (GdkEvent *)event);
3029
3030                         view->image_dnd_info.in_drag = FALSE;
3031
3032                         gtk_target_list_unref (target_list);
3033
3034                         return TRUE;
3035                 }
3036         }
3037
3038         /* For the Evince 0.4.x release, we limit selection to un-rotated
3039          * documents only.
3040          */
3041         if (view->pressed_button == 1 && view->rotation == 0) {
3042
3043                 /* Schedule timeout to scroll during selection and additionally
3044                  * scroll once to allow arbitrary speed. */
3045                 if (!view->selection_scroll_id)
3046                     view->selection_scroll_id = g_timeout_add (SCROLL_TIME, (GSourceFunc)selection_scroll_timeout_cb, view);
3047                 else
3048                     selection_scroll_timeout_cb (view);
3049
3050                 view->selection_info.in_selection = TRUE;
3051                 view->motion.x = x + view->scroll_x;
3052                 view->motion.y = y + view->scroll_y;
3053
3054                 /* Queue an idle to handle the motion.  We do this because
3055                  * handling any selection events in the motion could be slower
3056                  * than new motion events reach us.  We always put it in the
3057                  * idle to make sure we catch up and don't visibly lag the
3058                  * mouse. */
3059                 if (!view->selection_update_id)
3060                         view->selection_update_id = g_idle_add ((GSourceFunc)selection_update_idle_cb, view);
3061
3062                 return TRUE;
3063         } else if (view->pressed_button == 2) {
3064                 if (!view->drag_info.in_drag) {
3065                         gboolean start;
3066                         int i;
3067
3068                         start = gtk_drag_check_threshold (widget,
3069                                                           view->drag_info.start.x,
3070                                                           view->drag_info.start.y,
3071                                                           event->x_root,
3072                                                           event->y_root);
3073                         view->drag_info.in_drag = start;
3074                         view->drag_info.drag_timeout_id = g_timeout_add (10,
3075                                 (GSourceFunc)ev_view_drag_update_momentum, view);
3076                         /* Set 100 to choose how long it takes to build up momentum */
3077                         /* Clear out previous momentum info: */
3078                         for (i = 0; i < DRAG_HISTORY; i++) {
3079                                 view->drag_info.buffer[i].x = event->x;
3080                                 view->drag_info.buffer[i].y = event->y;
3081                         }
3082                         view->drag_info.momentum.x = 0;
3083                         view->drag_info.momentum.y = 0;
3084                 }
3085
3086                 if (view->drag_info.in_drag) {
3087                         int dx, dy;
3088                         gdouble dhadj_value, dvadj_value;
3089
3090                         view->drag_info.buffer[0].x = event->x;
3091                         view->drag_info.buffer[0].y = event->y;
3092
3093                         dx = event->x_root - view->drag_info.start.x;
3094                         dy = event->y_root - view->drag_info.start.y;
3095
3096                         dhadj_value = view->hadjustment->page_size *
3097                                       (gdouble)dx / widget->allocation.width;
3098                         dvadj_value = view->vadjustment->page_size *
3099                                       (gdouble)dy / widget->allocation.height;
3100
3101                         /* clamp scrolling to visible area */
3102                         gtk_adjustment_set_value (view->hadjustment,
3103                                                   MIN(view->drag_info.hadj - dhadj_value,
3104                                                       view->hadjustment->upper -
3105                                                       view->hadjustment->page_size));
3106                         gtk_adjustment_set_value (view->vadjustment,
3107                                                   MIN(view->drag_info.vadj - dvadj_value,
3108                                                       view->vadjustment->upper -
3109                                                       view->vadjustment->page_size));
3110
3111                         return TRUE;
3112                 }
3113         } else if (view->pressed_button <= 0) {
3114                 ev_view_handle_cursor_over_xy (view, x, y);
3115                 return TRUE;
3116         }
3117
3118         return FALSE;
3119 }
3120
3121 static gboolean
3122 ev_view_button_release_event (GtkWidget      *widget,
3123                               GdkEventButton *event)
3124 {
3125         EvView *view = EV_VIEW (widget);
3126         EvLink *link = NULL;
3127
3128         view->drag_info.in_drag = FALSE;
3129         view->image_dnd_info.in_drag = FALSE;
3130
3131         view->drag_info.release_timeout_id = g_timeout_add (20,
3132                         (GSourceFunc)ev_view_scroll_drag_release, view);
3133
3134         if (view->pressed_button == 2) {
3135                 ev_view_handle_cursor_over_xy (view, event->x, event->y);
3136         }
3137
3138         if (view->document && view->pressed_button != 3) {
3139                 link = ev_view_get_link_at_location (view, event->x, event->y);
3140         }
3141
3142         view->pressed_button = -1;
3143
3144         if (view->selection_scroll_id) {
3145             g_source_remove (view->selection_scroll_id);
3146             view->selection_scroll_id = 0;
3147         }
3148         if (view->selection_update_id) {
3149             g_source_remove (view->selection_update_id);
3150             view->selection_update_id = 0;
3151         }
3152
3153         if (!view->selection_info.in_selection &&
3154             view->selection_info.style != EV_SELECTION_STYLE_GLYPH) {
3155                 compute_selections (view,
3156                                     view->selection_info.style,
3157                                     &(view->selection_info.start),
3158                                     &(view->selection_info.start));
3159         }
3160
3161         if (view->selection_info.selections) {
3162                 ev_view_update_primary_selection (view);
3163
3164                 if (view->selection_info.in_drag) {
3165                         clear_selection (view);
3166                         gtk_widget_queue_draw (widget);
3167                 }
3168
3169                 view->selection_info.in_drag = FALSE;
3170         } else if (link) {
3171                 if (event->button == 2) {
3172                         EvLinkAction    *action;
3173                         EvLinkActionType type;
3174
3175                         action = ev_link_get_action (link);
3176                         if (!action)
3177                                 return FALSE;
3178
3179                         type = ev_link_action_get_action_type (action);
3180                         if (type == EV_LINK_ACTION_TYPE_GOTO_DEST) {
3181                                 g_signal_emit (view,
3182                                                signals[SIGNAL_EXTERNAL_LINK],
3183                                                0, action);
3184                         }
3185                 } else {
3186                         ev_view_handle_link (view, link);
3187                 }
3188         } else if (view->presentation) {
3189                 switch (event->button) {
3190                         case 1:
3191                                 ev_view_next_page (view);
3192                                 return TRUE;
3193                         case 3:
3194                                 ev_view_previous_page (view);
3195                                 return TRUE;
3196                 }
3197         }
3198
3199         return FALSE;
3200 }
3201
3202 /* Goto Window */
3203 /* Cut and paste from gtkwindow.c */
3204 static void
3205 send_focus_change (GtkWidget *widget,
3206                    gboolean   in)
3207 {
3208         GdkEvent *fevent = gdk_event_new (GDK_FOCUS_CHANGE);
3209
3210         g_object_ref (widget);
3211
3212         if (in)
3213                 GTK_WIDGET_SET_FLAGS (widget, GTK_HAS_FOCUS);
3214         else
3215                 GTK_WIDGET_UNSET_FLAGS (widget, GTK_HAS_FOCUS);
3216
3217         fevent->focus_change.type = GDK_FOCUS_CHANGE;
3218         fevent->focus_change.window = g_object_ref (widget->window);
3219         fevent->focus_change.in = in;
3220
3221         gtk_widget_event (widget, fevent);
3222
3223         g_object_notify (G_OBJECT (widget), "has-focus");
3224
3225         g_object_unref (widget);
3226         gdk_event_free (fevent);
3227 }
3228
3229 static void
3230 ev_view_goto_window_hide (EvView *view)
3231 {
3232         /* send focus-in event */
3233         send_focus_change (view->goto_entry, FALSE);
3234         gtk_widget_hide (view->goto_window);
3235         gtk_entry_set_text (GTK_ENTRY (view->goto_entry), "");
3236 }
3237
3238 static gboolean
3239 ev_view_goto_window_delete_event (GtkWidget   *widget,
3240                                   GdkEventAny *event,
3241                                   EvView      *view)
3242 {
3243         ev_view_goto_window_hide (view);
3244
3245         return TRUE;
3246 }
3247
3248 static gboolean
3249 key_is_numeric (guint keyval)
3250 {
3251         return ((keyval >= GDK_0 && keyval <= GDK_9) ||
3252                 (keyval >= GDK_KP_0 && keyval <= GDK_KP_9));
3253 }
3254
3255 static gboolean
3256 ev_view_goto_window_key_press_event (GtkWidget   *widget,
3257                                      GdkEventKey *event,
3258                                      EvView      *view)
3259 {
3260         switch (event->keyval) {
3261                 case GDK_Escape:
3262                 case GDK_Tab:
3263                 case GDK_KP_Tab:
3264                 case GDK_ISO_Left_Tab:
3265                         ev_view_goto_window_hide (view);
3266                         return TRUE;
3267                 case GDK_Return:
3268                 case GDK_KP_Enter:
3269                 case GDK_ISO_Enter:
3270                 case GDK_BackSpace:
3271                 case GDK_Delete:
3272                         return FALSE;
3273                 default:
3274                         if (!key_is_numeric (event->keyval))
3275                                 return TRUE;
3276         }
3277
3278         return FALSE;
3279 }
3280
3281 static gboolean
3282 ev_view_goto_window_button_press_event (GtkWidget      *widget,
3283                                         GdkEventButton *event,
3284                                         EvView         *view)
3285 {
3286         ev_view_goto_window_hide (view);
3287
3288         return TRUE;
3289 }
3290
3291 static void
3292 ev_view_goto_entry_activate (GtkEntry *entry,
3293                              EvView   *view)
3294 {
3295         const gchar *text;
3296         gint         page;
3297
3298         text = gtk_entry_get_text (entry);
3299         page = atoi (text) - 1;
3300
3301         ev_view_goto_window_hide (view);
3302
3303         if (page >= 0 &&
3304             page < ev_page_cache_get_n_pages (view->page_cache))
3305                 ev_page_cache_set_current_page (view->page_cache, page);
3306 }
3307
3308 static void
3309 ev_view_goto_window_create (EvView *view)
3310 {
3311         GtkWidget *frame, *hbox, *toplevel, *label;
3312
3313         toplevel = gtk_widget_get_toplevel (GTK_WIDGET (view));
3314
3315         if (view->goto_window) {
3316                 if (GTK_WINDOW (toplevel)->group)
3317                         gtk_window_group_add_window (GTK_WINDOW (toplevel)->group,
3318                                                      GTK_WINDOW (view->goto_window));
3319                 else if (GTK_WINDOW (view->goto_window)->group)
3320                         gtk_window_group_remove_window (GTK_WINDOW (view->goto_window)->group,
3321                                                         GTK_WINDOW (view->goto_window));
3322                 return;
3323         }
3324
3325         view->goto_window = gtk_window_new (GTK_WINDOW_POPUP);
3326
3327         if (GTK_WINDOW (toplevel)->group)
3328                 gtk_window_group_add_window (GTK_WINDOW (toplevel)->group,
3329                                              GTK_WINDOW (view->goto_window));
3330
3331         gtk_window_set_modal (GTK_WINDOW (view->goto_window), TRUE);
3332
3333         g_signal_connect (view->goto_window, "delete_event",
3334                           G_CALLBACK (ev_view_goto_window_delete_event),
3335                           view);
3336         g_signal_connect (view->goto_window, "key_press_event",
3337                           G_CALLBACK (ev_view_goto_window_key_press_event),
3338                           view);
3339         g_signal_connect (view->goto_window, "button_press_event",
3340                           G_CALLBACK (ev_view_goto_window_button_press_event),
3341                           view);
3342
3343         frame = gtk_frame_new (NULL);
3344         gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_ETCHED_IN);
3345         gtk_container_add (GTK_CONTAINER (view->goto_window), frame);
3346         gtk_widget_show (frame);
3347
3348         hbox = gtk_hbox_new (FALSE, 0);
3349         gtk_container_set_border_width (GTK_CONTAINER (hbox), 3);
3350         gtk_container_add (GTK_CONTAINER (frame), hbox);
3351         gtk_widget_show (hbox);
3352
3353         label = gtk_label_new(_("Jump to page:"));
3354         gtk_box_pack_start (GTK_BOX (hbox), label, TRUE, TRUE, 3);
3355         gtk_widget_show (label);
3356         gtk_widget_realize (label);
3357
3358         view->goto_entry = gtk_entry_new ();
3359         g_signal_connect (view->goto_entry, "activate",
3360                           G_CALLBACK (ev_view_goto_entry_activate),
3361                           view);
3362         gtk_box_pack_start_defaults (GTK_BOX (hbox), view->goto_entry);
3363         gtk_widget_show (view->goto_entry);
3364         gtk_widget_realize (view->goto_entry);
3365 }
3366
3367 static void
3368 ev_view_goto_entry_grab_focus (EvView *view)
3369 {
3370         GtkWidgetClass *entry_parent_class;
3371
3372         entry_parent_class = g_type_class_peek_parent (GTK_ENTRY_GET_CLASS (view->goto_entry));
3373         (entry_parent_class->grab_focus) (view->goto_entry);
3374
3375         send_focus_change (view->goto_entry, TRUE);
3376 }
3377
3378 static void
3379 ev_view_goto_window_send_key_event (EvView   *view,
3380                                     GdkEvent *event)
3381 {
3382         GdkEventKey *new_event;
3383         GdkScreen   *screen;
3384
3385         /* Move goto window off screen */
3386         screen = gtk_widget_get_screen (GTK_WIDGET (view));
3387         gtk_window_move (GTK_WINDOW (view->goto_window),
3388                          gdk_screen_get_width (screen) + 1,
3389                          gdk_screen_get_height (screen) + 1);
3390         gtk_widget_show (view->goto_window);
3391
3392         new_event = (GdkEventKey *) gdk_event_copy (event);
3393         g_object_unref (new_event->window);
3394         new_event->window = g_object_ref (view->goto_window->window);
3395         gtk_widget_realize (view->goto_window);
3396
3397         gtk_widget_event (view->goto_window, (GdkEvent *)new_event);
3398         gdk_event_free ((GdkEvent *)new_event);
3399         gtk_widget_hide (view->goto_window);
3400 }
3401
3402 static gboolean
3403 ev_view_key_press_event (GtkWidget   *widget,
3404                          GdkEventKey *event)
3405 {
3406         EvView *view = EV_VIEW (widget);
3407         EvPresentationState current;
3408
3409         if (!view->document)
3410                 return FALSE;
3411
3412         if (!view->presentation ||
3413             view->presentation_state == EV_PRESENTATION_END)
3414                 return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
3415
3416
3417         current = view->presentation_state;
3418
3419         switch (event->keyval) {
3420                 case GDK_b:
3421                 case GDK_B:
3422                         view->presentation_state =
3423                                 (view->presentation_state == EV_PRESENTATION_BLACK) ?
3424                                 EV_PRESENTATION_NORMAL : EV_PRESENTATION_BLACK;
3425                         break;
3426                 case GDK_w:
3427                 case GDK_W:
3428                         view->presentation_state =
3429                                 (view->presentation_state == EV_PRESENTATION_WHITE) ?
3430                                 EV_PRESENTATION_NORMAL : EV_PRESENTATION_WHITE;
3431                         break;
3432                 default:
3433                         if (view->presentation_state == EV_PRESENTATION_BLACK ||
3434                             view->presentation_state == EV_PRESENTATION_WHITE) {
3435                                 view->presentation_state = EV_PRESENTATION_NORMAL;
3436                         }
3437         }
3438
3439         if (current == view->presentation_state) {
3440                 if (ev_page_cache_get_n_pages (view->page_cache) > 1 &&
3441                     key_is_numeric (event->keyval)) {
3442                         gint x, y;
3443
3444                         ev_view_goto_window_create (view);
3445                         ev_view_goto_window_send_key_event (view, (GdkEvent *)event);
3446                         gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
3447                         gtk_window_move (GTK_WINDOW (view->goto_window), x, y);
3448                         gtk_widget_show (view->goto_window);
3449                         ev_view_goto_entry_grab_focus (view);
3450
3451                         return TRUE;
3452                 }
3453
3454                 return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
3455         }
3456
3457         switch (view->presentation_state) {
3458                 case EV_PRESENTATION_NORMAL:
3459                 case EV_PRESENTATION_BLACK:
3460                         gdk_window_set_background (view->layout.bin_window,
3461                                                    &widget->style->black);
3462                         break;
3463                 case EV_PRESENTATION_WHITE:
3464                         gdk_window_set_background (view->layout.bin_window,
3465                                                    &widget->style->white);
3466                         break;
3467                 default:
3468                         return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
3469         }
3470
3471         gtk_widget_queue_draw (widget);
3472         return TRUE;
3473 }
3474
3475 static gint
3476 ev_view_focus_in (GtkWidget     *widget,
3477                   GdkEventFocus *event)
3478 {
3479         if (EV_VIEW (widget)->pixbuf_cache)
3480                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
3481         gtk_widget_queue_draw (widget);
3482
3483         return FALSE;
3484 }
3485
3486 static gint
3487 ev_view_focus_out (GtkWidget     *widget,
3488                      GdkEventFocus *event)
3489 {
3490         if (EV_VIEW (widget)->goto_window)
3491                 ev_view_goto_window_hide (EV_VIEW (widget));
3492
3493         if (EV_VIEW (widget)->pixbuf_cache)
3494                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
3495         gtk_widget_queue_draw (widget);
3496
3497         return FALSE;
3498 }
3499
3500 static gboolean
3501 ev_view_leave_notify_event (GtkWidget *widget, GdkEventCrossing   *event)
3502 {
3503         EvView *view = EV_VIEW (widget);
3504
3505         if (view->cursor != EV_VIEW_CURSOR_NORMAL)
3506                 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
3507
3508 #if !GTK_CHECK_VERSION (2, 11, 7)
3509         if (view->link_tooltip) {
3510                 view->hovered_link = NULL;
3511                 ev_tooltip_deactivate (EV_TOOLTIP (view->link_tooltip));
3512         }
3513 #endif
3514
3515         return FALSE;
3516 }
3517
3518 static gboolean
3519 ev_view_enter_notify_event (GtkWidget *widget, GdkEventCrossing   *event)
3520 {
3521         EvView *view = EV_VIEW (widget);
3522
3523         ev_view_handle_cursor_over_xy (view, event->x, event->y);
3524
3525         return FALSE;
3526 }
3527
3528 static void
3529 ev_view_style_set (GtkWidget *widget,
3530                    GtkStyle  *old_style)
3531 {
3532         if (EV_VIEW (widget)->pixbuf_cache)
3533                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
3534
3535         GTK_WIDGET_CLASS (ev_view_parent_class)->style_set (widget, old_style);
3536 }
3537
3538 /*** Drawing ***/
3539
3540 static guint32
3541 ev_gdk_color_to_rgb (const GdkColor *color)
3542 {
3543   guint32 result;
3544   result = (0xff0000 | (color->red & 0xff00));
3545   result <<= 8;
3546   result |= ((color->green & 0xff00) | (color->blue >> 8));
3547   return result;
3548 }
3549
3550 static void
3551 draw_rubberband (GtkWidget *widget, GdkWindow *window,
3552                  const GdkRectangle *rect, guchar alpha)
3553 {
3554         GdkGC *gc;
3555         GdkPixbuf *pixbuf;
3556         GdkColor *fill_color_gdk;
3557         guint fill_color;
3558
3559         fill_color_gdk = gdk_color_copy (&GTK_WIDGET (widget)->style->base[GTK_STATE_SELECTED]);
3560         fill_color = ev_gdk_color_to_rgb (fill_color_gdk) << 8 | alpha;
3561
3562         pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE, 8,
3563                                  rect->width, rect->height);
3564         gdk_pixbuf_fill (pixbuf, fill_color);
3565
3566         gdk_draw_pixbuf (window, NULL, pixbuf,
3567                          0, 0,
3568                          rect->x - EV_VIEW (widget)->scroll_x, rect->y - EV_VIEW (widget)->scroll_y,
3569                          rect->width, rect->height,
3570                          GDK_RGB_DITHER_NONE,
3571                          0, 0);
3572
3573         g_object_unref (pixbuf);
3574
3575         gc = gdk_gc_new (window);
3576         gdk_gc_set_rgb_fg_color (gc, fill_color_gdk);
3577         gdk_draw_rectangle (window, gc, FALSE,
3578                             rect->x - EV_VIEW (widget)->scroll_x, rect->y - EV_VIEW (widget)->scroll_y,
3579                             rect->width - 1,
3580                             rect->height - 1);
3581         g_object_unref (gc);
3582
3583         gdk_color_free (fill_color_gdk);
3584 }
3585
3586
3587 static void
3588 highlight_find_results (EvView *view, int page)
3589 {
3590         EvDocumentFind *find;
3591         int i, results = 0;
3592
3593         find = EV_DOCUMENT_FIND (view->document);
3594
3595         results = ev_document_find_get_n_results (find, page);
3596
3597         for (i = 0; i < results; i++) {
3598                 EvRectangle rectangle;
3599                 GdkRectangle view_rectangle;
3600                 guchar alpha;
3601
3602                 if (i == view->find_result && page == view->current_page) {
3603                         alpha = 0x90;
3604                 } else {
3605                         alpha = 0x20;
3606                 }
3607
3608                 ev_document_find_get_result (find, page, i, &rectangle);
3609                 doc_rect_to_view_rect (view, page, &rectangle, &view_rectangle);
3610                 draw_rubberband (GTK_WIDGET (view), view->layout.bin_window,
3611                                  &view_rectangle, alpha);
3612         }
3613 }
3614
3615 static void
3616 draw_loading_text (EvView       *view,
3617                    GdkRectangle *page_area,
3618                    GdkRectangle *expose_area)
3619 {
3620         cairo_t *cr;
3621         gint     width, height;
3622
3623         if (!view->loading_text) {
3624                 const gchar *loading_text = _("Loading...");
3625                 PangoLayout *layout;
3626                 PangoFontDescription *font_desc;
3627                 PangoRectangle logical_rect;
3628                 gint target_width;
3629                 gdouble real_scale;
3630
3631                 ev_document_fc_mutex_lock ();
3632
3633                 layout = gtk_widget_create_pango_layout (GTK_WIDGET (view), loading_text);
3634
3635                 font_desc = pango_font_description_new ();
3636
3637                 /* We set the font to be 10 points, get the size, and scale appropriately */
3638                 pango_font_description_set_size (font_desc, 10 * PANGO_SCALE);
3639                 pango_layout_set_font_description (layout, font_desc);
3640                 pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
3641
3642                 target_width = MAX (page_area->width / 2, 1);
3643                 real_scale = ((double)target_width / (double) logical_rect.width) * (PANGO_SCALE * 10);
3644                 pango_font_description_set_size (font_desc, (int)real_scale);
3645                 pango_layout_set_font_description (layout, font_desc);
3646                 pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
3647
3648                 view->loading_text = cairo_image_surface_create (CAIRO_FORMAT_ARGB32,
3649                                                                  logical_rect.width,
3650                                                                  logical_rect.height);
3651                 cr = cairo_create (view->loading_text);
3652                 cairo_set_source_rgb (cr,
3653                                       155 / (double)255,
3654                                       155 / (double)255,
3655                                       155 / (double)255);
3656                 pango_cairo_show_layout (cr, layout);
3657                 cairo_destroy (cr);
3658
3659                 pango_font_description_free (font_desc);
3660                 g_object_unref (layout);
3661
3662                 ev_document_fc_mutex_unlock ();
3663         }
3664
3665         width = (page_area->width - cairo_image_surface_get_width (view->loading_text)) / 2;
3666         height = (page_area->height - cairo_image_surface_get_height (view->loading_text)) / 2;
3667
3668         cr = gdk_cairo_create (view->layout.bin_window);
3669         cairo_translate (cr,
3670                          page_area->x + width,
3671                          page_area->y + height);
3672         cairo_set_source_surface (cr, view->loading_text, 0, 0);
3673         cairo_paint (cr);
3674         cairo_destroy (cr);
3675 }
3676
3677 static void
3678 draw_one_page (EvView       *view,
3679                gint          page,
3680                cairo_t      *cr,
3681                GdkRectangle *page_area,
3682                GtkBorder    *border,
3683                GdkRectangle *expose_area,
3684                gboolean     *page_ready)
3685 {
3686         GdkRectangle overlap;
3687         GdkRectangle real_page_area;
3688
3689         g_assert (view->document);
3690
3691         if (! gdk_rectangle_intersect (page_area, expose_area, &overlap))
3692                 return;
3693
3694         /* Render the document itself */
3695         real_page_area = *page_area;
3696
3697         real_page_area.x += border->left;
3698         real_page_area.y += border->top;
3699         real_page_area.width -= (border->left + border->right);
3700         real_page_area.height -= (border->top + border->bottom);
3701         *page_ready = TRUE;
3702
3703         if (!view->presentation) {
3704                 gint current_page;
3705
3706                 current_page = ev_page_cache_get_current_page (view->page_cache);
3707                 ev_document_misc_paint_one_page (view->layout.bin_window,
3708                                                  GTK_WIDGET (view),
3709                                                  page_area, border,
3710                                                  page == current_page);
3711         }
3712
3713         if (gdk_rectangle_intersect (&real_page_area, expose_area, &overlap)) {
3714                 gint             width, height;
3715                 gint             page_width, page_height;
3716                 cairo_surface_t *page_surface = NULL;
3717                 gint             selection_width, selection_height;
3718                 cairo_surface_t *selection_surface = NULL;
3719
3720                 page_surface = ev_pixbuf_cache_get_surface (view->pixbuf_cache, page);
3721
3722                 if (!page_surface) {
3723                         draw_loading_text (view,
3724                                            &real_page_area,
3725                                            expose_area);
3726                         *page_ready = FALSE;
3727
3728                         return;
3729                 }
3730
3731                 ev_page_cache_get_size (view->page_cache,
3732                                         page, view->rotation,
3733                                         view->scale,
3734                                         &width, &height);
3735
3736                 page_width = cairo_image_surface_get_width (page_surface);
3737                 page_height = cairo_image_surface_get_height (page_surface);
3738
3739                 cairo_save (cr);
3740                 cairo_translate (cr, overlap.x, overlap.y);
3741
3742                 if (width != page_width || height != page_height) {
3743                         cairo_pattern_set_filter (cairo_get_source (cr),
3744                                                   CAIRO_FILTER_FAST);
3745                         cairo_scale (cr,
3746                                      (gdouble)width / page_width,
3747                                      (gdouble)height / page_height);
3748                 }
3749
3750                 cairo_surface_set_device_offset (page_surface,
3751                                                  overlap.x - real_page_area.x,
3752                                                  overlap.y - real_page_area.y);
3753                 cairo_set_source_surface (cr, page_surface, 0, 0);
3754                 cairo_paint (cr);
3755                 cairo_restore (cr);
3756
3757                 /* Get the selection pixbuf iff we have something to draw */
3758                 if (find_selection_for_page (view, page) &&
3759                     view->selection_mode == EV_VIEW_SELECTION_TEXT) {
3760                         selection_surface =
3761                                 ev_pixbuf_cache_get_selection_surface (view->pixbuf_cache,
3762                                                                        page,
3763                                                                        view->scale,
3764                                                                        NULL);
3765                 }
3766
3767                 if (!selection_surface) {
3768                         return;
3769                 }
3770
3771                 selection_width = cairo_image_surface_get_width (selection_surface);
3772                 selection_height = cairo_image_surface_get_height (selection_surface);
3773
3774                 cairo_save (cr);
3775                 cairo_translate (cr, overlap.x, overlap.y);
3776
3777                 if (width != selection_width || height != selection_height) {
3778                         cairo_pattern_set_filter (cairo_get_source (cr),
3779                                                   CAIRO_FILTER_FAST);
3780                         cairo_scale (cr,
3781                                      (gdouble)width / selection_width,
3782                                      (gdouble)height / selection_height);
3783                 }
3784
3785                 cairo_surface_set_device_offset (selection_surface,
3786                                                  overlap.x - real_page_area.x,
3787                                                  overlap.y - real_page_area.y);
3788                 cairo_set_source_surface (cr, selection_surface, 0, 0);
3789                 cairo_paint (cr);
3790                 cairo_restore (cr);
3791         }
3792 }
3793
3794 /*** GObject functions ***/
3795
3796 static void
3797 ev_view_finalize (GObject *object)
3798 {
3799         EvView *view = EV_VIEW (object);
3800
3801         g_free (view->find_status);
3802
3803         clear_selection (view);
3804
3805         if (view->image_dnd_info.image)
3806                 g_object_unref (view->image_dnd_info.image);
3807         view->image_dnd_info.image = NULL;
3808
3809         G_OBJECT_CLASS (ev_view_parent_class)->finalize (object);
3810 }
3811
3812 static void
3813 ev_view_destroy (GtkObject *object)
3814 {
3815         EvView *view = EV_VIEW (object);
3816
3817         if (view->document) {
3818                 g_object_unref (view->document);
3819                 view->document = NULL;
3820         }
3821
3822         if (view->pixbuf_cache) {
3823                 g_object_unref (view->pixbuf_cache);
3824                 view->pixbuf_cache = NULL;
3825         }
3826
3827 #if !GTK_CHECK_VERSION (2, 11, 7)
3828         if (view->link_tooltip) {
3829                 gtk_widget_destroy (view->link_tooltip);
3830                 view->link_tooltip = NULL;
3831         }
3832 #endif
3833         if (view->goto_window) {
3834                 gtk_widget_destroy (view->goto_window);
3835                 view->goto_window = NULL;
3836                 view->goto_entry = NULL;
3837         }
3838
3839         if (view->selection_scroll_id) {
3840             g_source_remove (view->selection_scroll_id);
3841             view->selection_scroll_id = 0;
3842         }
3843
3844         if (view->selection_update_id) {
3845             g_source_remove (view->selection_update_id);
3846             view->selection_update_id = 0;
3847         }
3848
3849         if (view->loading_text) {
3850                 cairo_surface_destroy (view->loading_text);
3851                 view->loading_text = NULL;
3852         }
3853
3854         if (view->scroll_info.timeout_id) {
3855             g_source_remove (view->scroll_info.timeout_id);
3856             view->scroll_info.timeout_id = 0;
3857         }
3858
3859         if (view->drag_info.drag_timeout_id) {
3860                 g_source_remove (view->drag_info.drag_timeout_id);
3861                 view->drag_info.drag_timeout_id = 0;
3862         }
3863
3864         if (view->drag_info.release_timeout_id) {
3865                 g_source_remove (view->drag_info.release_timeout_id);
3866                 view->drag_info.release_timeout_id = 0;
3867         }
3868
3869         ev_view_presentation_transition_stop (view);
3870
3871         ev_view_set_scroll_adjustments (GTK_LAYOUT (view), NULL, NULL);
3872
3873         GTK_OBJECT_CLASS (ev_view_parent_class)->destroy (object);
3874 }
3875
3876 static void
3877 ev_view_set_property (GObject      *object,
3878                       guint         prop_id,
3879                       const GValue *value,
3880                       GParamSpec   *pspec)
3881 {
3882         EvView *view = EV_VIEW (object);
3883
3884         switch (prop_id) {
3885                 case PROP_CONTINUOUS:
3886                         ev_view_set_continuous (view, g_value_get_boolean (value));
3887                         break;
3888                 case PROP_DUAL_PAGE:
3889                         ev_view_set_dual_page (view, g_value_get_boolean (value));
3890                         break;
3891                 case PROP_FULLSCREEN:
3892                         ev_view_set_fullscreen (view, g_value_get_boolean (value));
3893                         break;
3894                 case PROP_PRESENTATION:
3895                         ev_view_set_presentation (view, g_value_get_boolean (value));
3896                         break;
3897                 case PROP_SIZING_MODE:
3898                         ev_view_set_sizing_mode (view, g_value_get_enum (value));
3899                         break;
3900                 case PROP_ZOOM:
3901                         ev_view_set_zoom (view, g_value_get_double (value), FALSE);
3902                         break;
3903                 case PROP_ROTATION:
3904                         ev_view_set_rotation (view, g_value_get_int (value));
3905                         break;
3906                 default:
3907                         G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
3908         }
3909 }
3910
3911 static AtkObject *
3912 ev_view_get_accessible (GtkWidget *widget)
3913 {
3914         static gboolean first_time = TRUE;
3915
3916         if (first_time) {
3917                 AtkObjectFactory *factory;
3918                 AtkRegistry *registry;
3919                 GType derived_type;
3920                 GType derived_atk_type;
3921
3922                 /*
3923                  * Figure out whether accessibility is enabled by looking at the
3924                  * type of the accessible object which would be created for
3925                  * the parent type of EvView.
3926                  */
3927                 derived_type = g_type_parent (EV_TYPE_VIEW);
3928
3929                 registry = atk_get_default_registry ();
3930                 factory = atk_registry_get_factory (registry,
3931                                                     derived_type);
3932                 derived_atk_type = atk_object_factory_get_accessible_type (factory);
3933                 if (g_type_is_a (derived_atk_type, GTK_TYPE_ACCESSIBLE))
3934                         atk_registry_set_factory_type (registry,
3935                                                        EV_TYPE_VIEW,
3936                                                        ev_view_accessible_factory_get_type ());
3937                 first_time = FALSE;
3938         }
3939         return GTK_WIDGET_CLASS (ev_view_parent_class)->get_accessible (widget);
3940 }
3941
3942 static void
3943 ev_view_get_property (GObject *object,
3944                       guint prop_id,
3945                       GValue *value,
3946                       GParamSpec *pspec)
3947 {
3948         EvView *view = EV_VIEW (object);
3949
3950         switch (prop_id) {
3951                 case PROP_FIND_STATUS:
3952                         g_value_set_string (value, view->find_status);
3953                         break;
3954                 case PROP_CONTINUOUS:
3955                         g_value_set_boolean (value, view->continuous);
3956                         break;
3957                 case PROP_DUAL_PAGE:
3958                         g_value_set_boolean (value, view->dual_page);
3959                         break;
3960                 case PROP_FULLSCREEN:
3961                         g_value_set_boolean (value, view->fullscreen);
3962                         break;
3963                 case PROP_PRESENTATION:
3964                         g_value_set_boolean (value, view->presentation);
3965                         break;
3966                 case PROP_SIZING_MODE:
3967                         g_value_set_enum (value, view->sizing_mode);
3968                         break;
3969                 case PROP_ZOOM:
3970                         g_value_set_double (value, view->scale);
3971                         break;
3972                 case PROP_ROTATION:
3973                         g_value_set_int (value, view->rotation);
3974                         break;
3975                 case PROP_HAS_SELECTION:
3976                         g_value_set_boolean (value,
3977                                              view->selection_info.selections != NULL);
3978                         break;
3979                 default:
3980                         G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
3981         }
3982 }
3983
3984 static void
3985 ev_view_class_init (EvViewClass *class)
3986 {
3987         GObjectClass *object_class = G_OBJECT_CLASS (class);
3988         GtkObjectClass *gtk_object_class = GTK_OBJECT_CLASS (class);
3989         GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
3990         GtkLayoutClass *layout_class = GTK_LAYOUT_CLASS (class);
3991         GtkBindingSet *binding_set;
3992
3993         object_class->finalize = ev_view_finalize;
3994         object_class->set_property = ev_view_set_property;
3995         object_class->get_property = ev_view_get_property;
3996
3997         widget_class->expose_event = ev_view_expose_event;
3998         widget_class->button_press_event = ev_view_button_press_event;
3999         widget_class->motion_notify_event = ev_view_motion_notify_event;
4000         widget_class->button_release_event = ev_view_button_release_event;
4001         widget_class->key_press_event = ev_view_key_press_event;
4002         widget_class->focus_in_event = ev_view_focus_in;
4003         widget_class->focus_out_event = ev_view_focus_out;
4004         widget_class->get_accessible = ev_view_get_accessible;
4005         widget_class->size_request = ev_view_size_request;
4006         widget_class->size_allocate = ev_view_size_allocate;
4007         widget_class->realize = ev_view_realize;
4008         widget_class->scroll_event = ev_view_scroll_event;
4009         widget_class->enter_notify_event = ev_view_enter_notify_event;
4010         widget_class->leave_notify_event = ev_view_leave_notify_event;
4011         widget_class->style_set = ev_view_style_set;
4012         widget_class->drag_data_get = ev_view_drag_data_get;
4013         widget_class->drag_motion = ev_view_drag_motion;
4014         widget_class->drag_data_received = ev_view_drag_data_received;
4015         widget_class->popup_menu = ev_view_popup_menu;
4016 #if GTK_CHECK_VERSION (2, 11, 7)
4017         widget_class->query_tooltip = ev_view_query_tooltip;
4018 #endif
4019
4020         gtk_object_class->destroy = ev_view_destroy;
4021
4022         layout_class->set_scroll_adjustments = ev_view_set_scroll_adjustments;
4023
4024         class->binding_activated = ev_view_scroll;
4025
4026         signals[SIGNAL_BINDING_ACTIVATED] = g_signal_new ("binding_activated",
4027                          G_TYPE_FROM_CLASS (object_class),
4028                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
4029                          G_STRUCT_OFFSET (EvViewClass, binding_activated),
4030                          NULL, NULL,
4031                          ev_marshal_VOID__ENUM_BOOLEAN,
4032                          G_TYPE_NONE, 2,
4033                          GTK_TYPE_SCROLL_TYPE,
4034                          G_TYPE_BOOLEAN);
4035
4036         signals[SIGNAL_ZOOM_INVALID] = g_signal_new ("zoom-invalid",
4037                          G_TYPE_FROM_CLASS (object_class),
4038                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
4039                          G_STRUCT_OFFSET (EvViewClass, zoom_invalid),
4040                          NULL, NULL,
4041                          ev_marshal_VOID__VOID,
4042                          G_TYPE_NONE, 0, G_TYPE_NONE);
4043         signals[SIGNAL_HANDLE_LINK] = g_signal_new ("handle-link",
4044                          G_TYPE_FROM_CLASS (object_class),
4045                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
4046                          G_STRUCT_OFFSET (EvViewClass, handle_link),
4047                          NULL, NULL,
4048                          g_cclosure_marshal_VOID__OBJECT,
4049                          G_TYPE_NONE, 1,
4050                          G_TYPE_OBJECT);
4051         signals[SIGNAL_EXTERNAL_LINK] = g_signal_new ("external-link",
4052                          G_TYPE_FROM_CLASS (object_class),
4053                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
4054                          G_STRUCT_OFFSET (EvViewClass, external_link),
4055                          NULL, NULL,
4056                          g_cclosure_marshal_VOID__OBJECT,
4057                          G_TYPE_NONE, 1,
4058                          G_TYPE_OBJECT);
4059         signals[SIGNAL_POPUP_MENU] = g_signal_new ("popup",
4060                          G_TYPE_FROM_CLASS (object_class),
4061                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
4062                          G_STRUCT_OFFSET (EvViewClass, popup_menu),
4063                          NULL, NULL,
4064                          g_cclosure_marshal_VOID__OBJECT,
4065                          G_TYPE_NONE, 1,
4066                          G_TYPE_OBJECT);
4067
4068
4069         g_object_class_install_property (object_class,
4070                                          PROP_FIND_STATUS,
4071                                          g_param_spec_string ("find-status",
4072                                                               "Find Status Message",
4073                                                               "The find status message",
4074                                                               NULL,
4075                                                               G_PARAM_READABLE));
4076
4077         g_object_class_install_property (object_class,
4078                                          PROP_CONTINUOUS,
4079                                          g_param_spec_boolean ("continuous",
4080                                                                "Continuous",
4081                                                                "Continuous scrolling mode",
4082                                                                TRUE,
4083                                                                G_PARAM_READWRITE));
4084
4085         g_object_class_install_property (object_class,
4086                                          PROP_DUAL_PAGE,
4087                                          g_param_spec_boolean ("dual-page",
4088                                                                "Dual Page",
4089                                                                "Two pages visible at once",
4090                                                                FALSE,
4091                                                                G_PARAM_READWRITE));
4092         g_object_class_install_property (object_class,
4093                                          PROP_FULLSCREEN,
4094                                          g_param_spec_boolean ("fullscreen",
4095                                                                "Full Screen",
4096                                                                "Draw page in a fullscreen fashion",
4097                                                                FALSE,
4098                                                                G_PARAM_READWRITE));
4099         g_object_class_install_property (object_class,
4100                                          PROP_PRESENTATION,
4101                                          g_param_spec_boolean ("presentation",
4102                                                                "Presentation",
4103                                                                "Draw page in presentation mode",
4104                                                                TRUE,
4105                                                                G_PARAM_READWRITE));
4106
4107         g_object_class_install_property (object_class,
4108                                          PROP_SIZING_MODE,
4109                                          g_param_spec_enum ("sizing-mode",
4110                                                             "Sizing Mode",
4111                                                             "Sizing Mode",
4112                                                             EV_TYPE_SIZING_MODE,
4113                                                             EV_SIZING_FIT_WIDTH,
4114                                                             G_PARAM_READWRITE));
4115
4116         g_object_class_install_property (object_class,
4117                                          PROP_ZOOM,
4118                                          g_param_spec_double ("zoom",
4119                                                               "Zoom factor",
4120                                                               "Zoom factor",
4121                                                               0,
4122                                                               G_MAXDOUBLE,
4123                                                               1.0,
4124                                                               G_PARAM_READWRITE));
4125         g_object_class_install_property (object_class,
4126                                          PROP_ROTATION,
4127                                          g_param_spec_double ("rotation",
4128                                                               "Rotation",
4129                                                               "Rotation",
4130                                                               0,
4131                                                               360,
4132                                                               0,
4133                                                               G_PARAM_READWRITE));
4134         g_object_class_install_property (object_class,
4135                                          PROP_HAS_SELECTION,
4136                                          g_param_spec_boolean ("has-selection",
4137                                                                "Has selection",
4138                                                                "The view has selections",
4139                                                                FALSE,
4140                                                                G_PARAM_READABLE));
4141
4142         binding_set = gtk_binding_set_by_class (class);
4143
4144         add_scroll_binding_keypad (binding_set, GDK_Left,  0, EV_SCROLL_STEP_BACKWARD, TRUE);
4145         add_scroll_binding_keypad (binding_set, GDK_Right, 0, EV_SCROLL_STEP_FORWARD,  TRUE);
4146         add_scroll_binding_keypad (binding_set, GDK_Left,  GDK_MOD1_MASK, EV_SCROLL_STEP_DOWN, TRUE);
4147         add_scroll_binding_keypad (binding_set, GDK_Right, GDK_MOD1_MASK, EV_SCROLL_STEP_UP,  TRUE);
4148         add_scroll_binding_keypad (binding_set, GDK_Up,    0, EV_SCROLL_STEP_BACKWARD, FALSE);
4149         add_scroll_binding_keypad (binding_set, GDK_Down,  0, EV_SCROLL_STEP_FORWARD,  FALSE);
4150         add_scroll_binding_keypad (binding_set, GDK_Up,    GDK_MOD1_MASK, EV_SCROLL_STEP_DOWN, FALSE);
4151         add_scroll_binding_keypad (binding_set, GDK_Down,  GDK_MOD1_MASK, EV_SCROLL_STEP_UP,  FALSE);
4152         gtk_binding_entry_add_signal (binding_set, GDK_H, 0, "binding_activated", 2, EV_TYPE_SCROLL_TYPE,
4153                                       EV_SCROLL_STEP_BACKWARD, G_TYPE_BOOLEAN, TRUE);
4154         gtk_binding_entry_add_signal (binding_set, GDK_J, 0, "binding_activated", 2, EV_TYPE_SCROLL_TYPE,
4155                                       EV_SCROLL_STEP_FORWARD, G_TYPE_BOOLEAN, FALSE);
4156         gtk_binding_entry_add_signal (binding_set, GDK_K, 0, "binding_activated", 2, EV_TYPE_SCROLL_TYPE,
4157                                       EV_SCROLL_STEP_BACKWARD, G_TYPE_BOOLEAN, FALSE);
4158         gtk_binding_entry_add_signal (binding_set, GDK_L, 0, "binding_activated", 2, EV_TYPE_SCROLL_TYPE,
4159                                       EV_SCROLL_STEP_FORWARD, G_TYPE_BOOLEAN, TRUE);
4160
4161 }
4162
4163 static void
4164 ev_view_init (EvView *view)
4165 {
4166         GTK_WIDGET_SET_FLAGS (view, GTK_CAN_FOCUS);
4167
4168         view->spacing = 5;
4169         view->scale = 1.0;
4170         view->current_page = 0;
4171         view->pressed_button = -1;
4172         view->cursor = EV_VIEW_CURSOR_NORMAL;
4173         view->drag_info.in_drag = FALSE;
4174         view->scroll_info.autoscrolling = FALSE;
4175         view->selection_info.selections = NULL;
4176         view->selection_info.in_selection = FALSE;
4177         view->selection_info.in_drag = FALSE;
4178         view->selection_mode = EV_VIEW_SELECTION_TEXT;
4179         view->continuous = TRUE;
4180         view->dual_page = FALSE;
4181         view->presentation = FALSE;
4182         view->presentation_state = EV_PRESENTATION_NORMAL;
4183         view->fullscreen = FALSE;
4184         view->sizing_mode = EV_SIZING_FIT_WIDTH;
4185         view->pending_scroll = SCROLL_TO_KEEP_POSITION;
4186         view->jump_to_find_result = TRUE;
4187         view->highlight_find_results = FALSE;
4188
4189         gtk_layout_set_hadjustment (GTK_LAYOUT (view), NULL);
4190         gtk_layout_set_vadjustment (GTK_LAYOUT (view), NULL);
4191
4192         gtk_drag_dest_set (GTK_WIDGET (view),
4193                            GTK_DEST_DEFAULT_ALL,
4194                            view_drop_targets,
4195                            G_N_ELEMENTS (view_drop_targets),
4196                            GDK_ACTION_COPY);
4197 }
4198
4199 /*** Callbacks ***/
4200
4201 static void
4202 find_changed_cb (EvDocument *document, int page, EvView *view)
4203 {
4204         double percent;
4205         int n_pages;
4206
4207         percent = ev_document_find_get_progress
4208                         (EV_DOCUMENT_FIND (view->document));
4209         n_pages = ev_page_cache_get_n_pages (view->page_cache);
4210
4211         if (view->jump_to_find_result == TRUE) {
4212                 jump_to_find_page (view, EV_VIEW_FIND_NEXT, 0);
4213                 jump_to_find_result (view);
4214         }
4215         update_find_status_message (view, percent * n_pages >= n_pages - 1 );
4216         if (view->current_page == page)
4217                 gtk_widget_queue_draw (GTK_WIDGET (view));
4218 }
4219
4220 static void
4221 ev_view_change_page (EvView *view,
4222                      gint    new_page)
4223 {
4224         gint x, y;
4225
4226         view->current_page = new_page;
4227         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
4228
4229         if (view->presentation)
4230                 ev_view_presentation_transition_start (view);
4231
4232         gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
4233         ev_view_handle_cursor_over_xy (view, x, y);
4234
4235         gtk_widget_queue_resize (GTK_WIDGET (view));
4236 }
4237
4238 static void
4239 ev_view_transition_animation_finish (EvTransitionAnimation *animation,
4240                                      EvView                *view)
4241 {
4242         g_object_unref (view->animation);
4243         view->animation = NULL;
4244         ev_view_change_page (view, view->current_page);
4245 }
4246
4247 static void
4248 ev_view_transition_animation_frame (EvTransitionAnimation *animation,
4249                                     gdouble                progress,
4250                                     EvView                *view)
4251 {
4252         gtk_widget_queue_draw (GTK_WIDGET (view));
4253 }
4254
4255 static void
4256 ev_view_presentation_animation_start (EvView *view,
4257                                       int     new_page)
4258 {
4259         EvTransitionEffect *effect = NULL;
4260         cairo_surface_t *surface;
4261
4262         if (EV_IS_DOCUMENT_TRANSITION (view->document))
4263                 effect = ev_document_transition_get_effect (EV_DOCUMENT_TRANSITION (view->document),
4264                                                             view->current_page);
4265         if (!effect)
4266                 return;
4267
4268         surface = ev_pixbuf_cache_get_surface (view->pixbuf_cache, view->current_page);
4269         view->animation = ev_transition_animation_new (effect);
4270         ev_transition_animation_set_origin_surface (view->animation, surface);
4271
4272         g_signal_connect (view->animation, "frame",
4273                           G_CALLBACK (ev_view_transition_animation_frame), view);
4274         g_signal_connect (view->animation, "finished",
4275                           G_CALLBACK (ev_view_transition_animation_finish), view);
4276 }
4277
4278 static void
4279 job_finished_cb (EvPixbufCache *pixbuf_cache,
4280                  GdkRegion     *region,
4281                  EvView        *view)
4282 {
4283         if (view->animation) {
4284                 cairo_surface_t *surface;
4285
4286                 surface = ev_pixbuf_cache_get_surface (pixbuf_cache, view->current_page);
4287                 ev_transition_animation_set_dest_surface (view->animation, surface);
4288         }
4289
4290         if (region) {
4291                 gdk_window_invalidate_region (view->layout.bin_window,
4292                                               region, TRUE);
4293         } else {
4294                 gtk_widget_queue_draw (GTK_WIDGET (view));
4295         }
4296 }
4297
4298 static void
4299 page_changed_cb (EvPageCache *page_cache,
4300                  int          new_page,
4301                  EvView      *view)
4302 {
4303         if (view->current_page != new_page) {
4304                 if (view->presentation)
4305                         ev_view_presentation_animation_start (view, new_page);
4306
4307                 ev_view_change_page (view, new_page);
4308         } else {
4309                 gtk_widget_queue_draw (GTK_WIDGET (view));
4310         }
4311
4312         if (EV_IS_DOCUMENT_FIND (view->document)) {
4313                 view->find_result = 0;
4314                 update_find_status_message (view, TRUE);
4315         }
4316 }
4317
4318 static void
4319 on_adjustment_value_changed (GtkAdjustment *adjustment,
4320                              EvView        *view)
4321 {
4322         int dx = 0, dy = 0;
4323         gint x, y;
4324         GList *children, *l;
4325
4326         if (! GTK_WIDGET_REALIZED (view))
4327                 return;
4328
4329         if (view->hadjustment) {
4330                 dx = view->scroll_x - (int) view->hadjustment->value;
4331                 view->scroll_x = (int) view->hadjustment->value;
4332         } else {
4333                 view->scroll_x = 0;
4334         }
4335
4336         if (view->vadjustment) {
4337                 dy = view->scroll_y - (int) view->vadjustment->value;
4338                 view->scroll_y = (int) view->vadjustment->value;
4339         } else {
4340                 view->scroll_y = 0;
4341         }
4342
4343         children = gtk_container_get_children (GTK_CONTAINER (view));
4344         for (l = children; l && l->data; l = g_list_next (l)) {
4345                 gint       child_x, child_y;
4346                 GtkWidget *child = (GtkWidget *)l->data;
4347
4348                 gtk_container_child_get (GTK_CONTAINER (view),
4349                                          child,
4350                                          "x", &child_x,
4351                                          "y", &child_y,
4352                                          NULL);
4353                 gtk_layout_move (GTK_LAYOUT (view), child, child_x + dx, child_y + dy);
4354         }
4355         g_list_free (children);
4356
4357         if (view->pending_resize)
4358                 gtk_widget_queue_draw (GTK_WIDGET (view));
4359         else
4360                 gdk_window_scroll (view->layout.bin_window, dx, dy);
4361
4362         gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
4363         ev_view_handle_cursor_over_xy (view, x, y);
4364
4365         if (view->document)
4366                 view_update_range_and_current_page (view);
4367 }
4368
4369 GtkWidget*
4370 ev_view_new (void)
4371 {
4372         GtkWidget *view;
4373
4374         view = g_object_new (EV_TYPE_VIEW, NULL);
4375
4376         return view;
4377 }
4378
4379 static void
4380 setup_caches (EvView *view)
4381 {
4382         view->page_cache = ev_page_cache_get (view->document);
4383         g_signal_connect (view->page_cache, "page-changed", G_CALLBACK (page_changed_cb), view);
4384         view->pixbuf_cache = ev_pixbuf_cache_new (GTK_WIDGET (view), view->document);
4385         g_signal_connect (view->pixbuf_cache, "job-finished", G_CALLBACK (job_finished_cb), view);
4386         page_changed_cb (view->page_cache,
4387                          ev_page_cache_get_current_page (view->page_cache),
4388                          view);
4389 }
4390
4391 static void
4392 clear_caches (EvView *view)
4393 {
4394         if (view->pixbuf_cache) {
4395                 g_object_unref (view->pixbuf_cache);
4396                 view->pixbuf_cache = NULL;
4397         }
4398
4399         if (view->page_cache) {
4400                 view->page_cache = NULL;
4401         }
4402 }
4403
4404 void
4405 ev_view_set_loading (EvView       *view,
4406                      gboolean      loading)
4407 {
4408         view->loading = loading;
4409         gtk_widget_queue_draw (GTK_WIDGET (view));
4410 }
4411
4412 static gboolean ev_view_autoscroll_cb (EvView *view)
4413 {
4414         gdouble speed, value;
4415
4416         /* If the user stops autoscrolling, autoscrolling will be
4417          * set to false but the timeout will continue; stop the timeout: */
4418         if (!view->scroll_info.autoscrolling) {
4419                 view->scroll_info.timeout_id = 0;
4420                 return FALSE;
4421         }
4422
4423         if (view->scroll_info.last_y > view->scroll_info.start_y &&
4424                 (view->scroll_info.last_y < view->scroll_info.start_y))
4425                 return TRUE;
4426
4427         /* Replace 100 with your speed of choice: The lower the faster.
4428          * Replace 3 with another speed of choice: The higher, the faster it accelerated
4429          *      based on the distance of the starting point from the mouse
4430          * (All also effected by the timeout interval of this callback) */
4431
4432         if (view->scroll_info.start_y > view->scroll_info.last_y)
4433                 speed = -pow ((((gdouble)view->scroll_info.start_y - view->scroll_info.last_y) / 100), 3);
4434         else
4435                 speed = pow ((((gdouble)view->scroll_info.last_y - view->scroll_info.start_y) / 100), 3);
4436
4437         value = gtk_adjustment_get_value (view->vadjustment);
4438         value = CLAMP (value + speed, 0, view->vadjustment->upper - view->vadjustment->page_size);
4439         gtk_adjustment_set_value (view->vadjustment, value);
4440
4441         return TRUE;
4442
4443 }
4444
4445 void ev_view_autoscroll(EvView *view)
4446 {
4447         view->scroll_info.autoscrolling = TRUE;
4448         view->scroll_info.timeout_id = g_timeout_add (20, (GSourceFunc)(ev_view_autoscroll_cb), view);
4449 }
4450
4451 void
4452 ev_view_set_document (EvView     *view,
4453                       EvDocument *document)
4454 {
4455         g_return_if_fail (EV_IS_VIEW (view));
4456
4457         view->loading = FALSE;
4458
4459         if (document != view->document) {
4460                 clear_caches (view);
4461
4462                 if (view->document) {
4463                         g_signal_handlers_disconnect_by_func (view->document,
4464                                                               find_changed_cb,
4465                                                               view);
4466                         g_object_unref (view->document);
4467                         view->page_cache = NULL;
4468
4469                 }
4470
4471                 view->document = document;
4472                 view->find_result = 0;
4473
4474                 if (view->document) {
4475                         g_object_ref (view->document);
4476                         if (EV_IS_DOCUMENT_FIND (view->document)) {
4477                                 g_signal_connect (view->document,
4478                                                   "find_changed",
4479                                                   G_CALLBACK (find_changed_cb),
4480                                                   view);
4481                         }
4482
4483                         setup_caches (view);
4484                 }
4485
4486                 gtk_widget_queue_resize (GTK_WIDGET (view));
4487         }
4488 }
4489
4490 /*** Zoom and sizing mode ***/
4491
4492 #define EPSILON 0.0000001
4493 void
4494 ev_view_set_zoom (EvView   *view,
4495                   double    factor,
4496                   gboolean  relative)
4497 {
4498         double scale;
4499
4500         if (relative)
4501                 scale = view->scale * factor;
4502         else
4503                 scale = factor;
4504
4505         scale = CLAMP (scale,
4506                        view->sizing_mode == EV_SIZING_FREE ? view->min_scale : 0,
4507                        view->max_scale);
4508
4509         if (ABS (view->scale - scale) < EPSILON)
4510                 return;
4511
4512         if (view->loading_text) {
4513                 cairo_surface_destroy (view->loading_text);
4514                 view->loading_text = NULL;
4515         }
4516
4517         view->scale = scale;
4518         view->pending_resize = TRUE;
4519
4520         gtk_widget_queue_resize (GTK_WIDGET (view));
4521
4522         g_object_notify (G_OBJECT (view), "zoom");
4523 }
4524
4525 double
4526 ev_view_get_zoom (EvView *view)
4527 {
4528         return view->scale;
4529 }
4530
4531 void
4532 ev_view_set_screen_dpi (EvView  *view,
4533                         gdouble  dpi)
4534 {
4535         g_return_if_fail (EV_IS_VIEW (view));
4536         g_return_if_fail (dpi > 0);
4537
4538         view->dpi = dpi;
4539         view->min_scale = MIN_SCALE * dpi / 72.0;
4540         view->max_scale = MAX_SCALE * dpi / 72.0;
4541 }
4542
4543 gboolean
4544 ev_view_get_continuous (EvView *view)
4545 {
4546         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
4547
4548         return view->continuous;
4549 }
4550
4551 void
4552 ev_view_set_continuous (EvView   *view,
4553                         gboolean  continuous)
4554 {
4555         g_return_if_fail (EV_IS_VIEW (view));
4556
4557         continuous = continuous != FALSE;
4558
4559         if (view->continuous != continuous) {
4560                 view->continuous = continuous;
4561                 view->pending_scroll = SCROLL_TO_PAGE_POSITION;
4562                 gtk_widget_queue_resize (GTK_WIDGET (view));
4563         }
4564
4565         g_object_notify (G_OBJECT (view), "continuous");
4566 }
4567
4568 gboolean
4569 ev_view_get_dual_page (EvView *view)
4570 {
4571         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
4572
4573         return view->dual_page;
4574 }
4575
4576 void
4577 ev_view_set_dual_page (EvView   *view,
4578                        gboolean  dual_page)
4579 {
4580         g_return_if_fail (EV_IS_VIEW (view));
4581
4582         dual_page = dual_page != FALSE;
4583
4584         if (view->dual_page == dual_page)
4585                 return;
4586
4587         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
4588         view->dual_page = dual_page;
4589         /* FIXME: if we're keeping the pixbuf cache around, we should extend the
4590          * preload_cache_size to be 2 if dual_page is set.
4591          */
4592         gtk_widget_queue_resize (GTK_WIDGET (view));
4593
4594         g_object_notify (G_OBJECT (view), "dual-page");
4595 }
4596
4597 void
4598 ev_view_set_fullscreen (EvView   *view,
4599                          gboolean  fullscreen)
4600 {
4601         g_return_if_fail (EV_IS_VIEW (view));
4602
4603         fullscreen = fullscreen != FALSE;
4604
4605         if (view->fullscreen == fullscreen)
4606                 return;
4607
4608         view->fullscreen = fullscreen;
4609         gtk_widget_queue_resize (GTK_WIDGET (view));
4610
4611         g_object_notify (G_OBJECT (view), "fullscreen");
4612 }
4613
4614 gboolean
4615 ev_view_get_fullscreen (EvView *view)
4616 {
4617         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
4618
4619         return view->fullscreen;
4620 }
4621
4622 void
4623 ev_view_set_presentation (EvView   *view,
4624                           gboolean  presentation)
4625 {
4626         g_return_if_fail (EV_IS_VIEW (view));
4627
4628         presentation = presentation != FALSE;
4629
4630         if (view->presentation == presentation)
4631                 return;
4632
4633         if (!presentation)
4634                 view->presentation_state = EV_PRESENTATION_NORMAL;
4635
4636         view->presentation = presentation;
4637         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
4638
4639         if (presentation) {
4640                 view->sizing_mode_saved = view->sizing_mode;
4641                 view->scale_saved = view->scale;
4642                 ev_view_set_sizing_mode (view, EV_SIZING_BEST_FIT);
4643         } else {
4644                 ev_view_set_sizing_mode (view, view->sizing_mode_saved);
4645                 ev_view_set_zoom (view, view->scale_saved, FALSE);
4646         }
4647
4648         gtk_widget_queue_resize (GTK_WIDGET (view));
4649
4650         if (presentation)
4651                 ev_view_presentation_transition_start (view);
4652         else {
4653                 ev_view_presentation_transition_stop (view);
4654
4655                 if (view->animation) {
4656                         /* stop any running animation */
4657                         ev_view_transition_animation_finish (view->animation, view);
4658                 }
4659         }
4660
4661         if (GTK_WIDGET_REALIZED (view)) {
4662                 if (view->presentation)
4663                         gdk_window_set_background (view->layout.bin_window,
4664                                                    &GTK_WIDGET (view)->style->black);
4665                 else
4666                         gdk_window_set_background (view->layout.bin_window,
4667                                                    &GTK_WIDGET (view)->style->mid [GTK_STATE_NORMAL]);
4668         }
4669
4670         g_object_notify (G_OBJECT (view), "presentation");
4671 }
4672
4673 gboolean
4674 ev_view_get_presentation (EvView *view)
4675 {
4676         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
4677
4678         return view->presentation;
4679 }
4680
4681 static gboolean
4682 transition_next_page (EvView *view)
4683 {
4684         ev_view_next_page (view);
4685
4686         return FALSE;
4687 }
4688
4689 static void
4690 ev_view_presentation_transition_stop (EvView *view)
4691 {
4692         if (view->trans_timeout_id > 0)
4693                 g_source_remove (view->trans_timeout_id);
4694         view->trans_timeout_id = 0;
4695 }
4696
4697 static void
4698 ev_view_presentation_transition_start (EvView *view)
4699 {
4700         gdouble duration;
4701
4702         if (!EV_IS_DOCUMENT_TRANSITION (view->document))
4703                 return;
4704
4705         ev_view_presentation_transition_stop (view);
4706
4707         duration = ev_document_transition_get_page_duration (EV_DOCUMENT_TRANSITION (view->document),
4708                                                              view->current_page);
4709         if (duration > 0) {
4710 #if GLIB_CHECK_VERSION (2, 13, 0)
4711                 view->trans_timeout_id =
4712                         g_timeout_add_seconds (duration,
4713                                                (GSourceFunc) transition_next_page,
4714                                                view);
4715 #else
4716                 view->trans_timeout_id =
4717                         g_timeout_add (duration * 1000,
4718                                        (GSourceFunc) transition_next_page,
4719                                        view);
4720 #endif
4721         }
4722 }
4723
4724 void
4725 ev_view_set_sizing_mode (EvView       *view,
4726                          EvSizingMode  sizing_mode)
4727 {
4728         g_return_if_fail (EV_IS_VIEW (view));
4729
4730         if (view->sizing_mode == sizing_mode)
4731                 return;
4732
4733         view->sizing_mode = sizing_mode;
4734         gtk_widget_queue_resize (GTK_WIDGET (view));
4735
4736         g_object_notify (G_OBJECT (view), "sizing-mode");
4737 }
4738
4739 EvSizingMode
4740 ev_view_get_sizing_mode (EvView *view)
4741 {
4742         g_return_val_if_fail (EV_IS_VIEW (view), EV_SIZING_FREE);
4743
4744         return view->sizing_mode;
4745 }
4746
4747 gboolean
4748 ev_view_can_zoom_in (EvView *view)
4749 {
4750         return view->scale * ZOOM_IN_FACTOR <= view->max_scale;
4751 }
4752
4753 gboolean
4754 ev_view_can_zoom_out (EvView *view)
4755 {
4756         return view->scale * ZOOM_OUT_FACTOR >= view->min_scale;
4757 }
4758
4759 void
4760 ev_view_zoom_in (EvView *view)
4761 {
4762         g_return_if_fail (view->sizing_mode == EV_SIZING_FREE);
4763
4764         if (view->presentation)
4765                 return;
4766
4767         view->pending_scroll = SCROLL_TO_CENTER;
4768         ev_view_set_zoom (view, ZOOM_IN_FACTOR, TRUE);
4769 }
4770
4771 void
4772 ev_view_zoom_out (EvView *view)
4773 {
4774         g_return_if_fail (view->sizing_mode == EV_SIZING_FREE);
4775
4776         if (view->presentation)
4777                 return;
4778
4779         view->pending_scroll = SCROLL_TO_CENTER;
4780         ev_view_set_zoom (view, ZOOM_OUT_FACTOR, TRUE);
4781 }
4782
4783 void
4784 ev_view_rotate_right (EvView *view)
4785 {
4786         int rotation = view->rotation + 90;
4787
4788         if (rotation >= 360) {
4789                 rotation -= 360;
4790         }
4791
4792         ev_view_set_rotation (view, rotation);
4793 }
4794
4795 void
4796 ev_view_rotate_left (EvView *view)
4797 {
4798         int rotation = view->rotation - 90;
4799
4800         if (rotation < 0) {
4801                 rotation += 360;
4802         }
4803
4804         ev_view_set_rotation (view, rotation);
4805 }
4806
4807 void
4808 ev_view_set_rotation (EvView *view, int rotation)
4809 {
4810         view->rotation = rotation;
4811
4812         if (view->pixbuf_cache) {
4813                 ev_pixbuf_cache_clear (view->pixbuf_cache);
4814                 gtk_widget_queue_resize (GTK_WIDGET (view));
4815         }
4816
4817         if (rotation != 0)
4818                 clear_selection (view);
4819
4820         g_object_notify (G_OBJECT (view), "rotation");
4821 }
4822
4823 int
4824 ev_view_get_rotation (EvView *view)
4825 {
4826         return view->rotation;
4827 }
4828
4829 static double
4830 zoom_for_size_fit_width (int doc_width,
4831                          int doc_height,
4832                          int target_width,
4833                          int target_height,
4834                          int vsb_width)
4835 {
4836         double scale;
4837
4838         scale = (double)target_width / doc_width;
4839
4840         if (doc_height * scale > target_height)
4841                 scale = (double) (target_width - vsb_width) / doc_width;
4842
4843         return scale;
4844 }
4845
4846 static double
4847 zoom_for_size_fit_height (int doc_width,
4848                           int doc_height,
4849                           int target_width,
4850                           int target_height,
4851                           int vsb_height)
4852 {
4853         double scale;
4854
4855         scale = (double)target_height / doc_height;
4856
4857         if (doc_width * scale > target_width)
4858                 scale = (double) (target_height - vsb_height) / doc_height;
4859
4860         return scale;
4861 }
4862
4863 static double
4864 zoom_for_size_best_fit (int doc_width,
4865                         int doc_height,
4866                         int target_width,
4867                         int target_height,
4868                         int vsb_width,
4869                         int hsb_width)
4870 {
4871         double w_scale;
4872         double h_scale;
4873
4874         w_scale = (double)target_width / doc_width;
4875         h_scale = (double)target_height / doc_height;
4876
4877         if (doc_height * w_scale > target_height)
4878                 w_scale = (double) (target_width - vsb_width) / doc_width;
4879         if (doc_width * h_scale > target_width)
4880                 h_scale = (double) (target_height - hsb_width) / doc_height;
4881
4882         return MIN (w_scale, h_scale);
4883 }
4884
4885
4886 static void
4887 ev_view_zoom_for_size_presentation (EvView *view,
4888                                     int     width,
4889                                     int     height)
4890 {
4891         int doc_width, doc_height;
4892         gdouble scale;
4893
4894         ev_page_cache_get_size (view->page_cache,
4895                                 view->current_page,
4896                                 view->rotation,
4897                                 1.0,
4898                                 &doc_width,
4899                                 &doc_height);
4900         scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, 0, 0);
4901         ev_view_set_zoom (view, scale, FALSE);
4902 }
4903
4904 static void
4905 ev_view_zoom_for_size_continuous_and_dual_page (EvView *view,
4906                            int     width,
4907                            int     height,
4908                            int     vsb_width,
4909                            int     hsb_height)
4910 {
4911         int doc_width, doc_height;
4912         GtkBorder border;
4913         gdouble scale;
4914
4915         ev_page_cache_get_max_width (view->page_cache,
4916                                      view->rotation,
4917                                      1.0,
4918                                      &doc_width);
4919         ev_page_cache_get_max_height (view->page_cache,
4920                                       view->rotation,
4921                                       1.0,
4922                                       &doc_height);
4923         compute_border (view, doc_width, doc_height, &border);
4924
4925         doc_width = doc_width * 2;
4926         width -= (2 * (border.left + border.right) + 3 * view->spacing);
4927         height -= (border.top + border.bottom + 2 * view->spacing - 1);
4928
4929         /* FIXME: We really need to calculate the overall height here, not the
4930          * page height.  We assume there's always a vertical scrollbar for
4931          * now.  We need to fix this. */
4932         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
4933                 scale = zoom_for_size_fit_width (doc_width, doc_height, width - vsb_width, height, 0);
4934         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
4935                 scale = zoom_for_size_best_fit (doc_width, doc_height, width - vsb_width, height, 0, hsb_height);
4936         else
4937                 g_assert_not_reached ();
4938
4939         ev_view_set_zoom (view, scale, FALSE);
4940 }
4941
4942 static void
4943 ev_view_zoom_for_size_continuous (EvView *view,
4944                                   int     width,
4945                                   int     height,
4946                                   int     vsb_width,
4947                                   int     hsb_height)
4948 {
4949         int doc_width, doc_height;
4950         GtkBorder border;
4951         gdouble scale;
4952
4953         ev_page_cache_get_max_width (view->page_cache,
4954                                      view->rotation,
4955                                      1.0,
4956                                      &doc_width);
4957         ev_page_cache_get_max_height (view->page_cache,
4958                                       view->rotation,
4959                                       1.0,
4960                                       &doc_height);
4961         compute_border (view, doc_width, doc_height, &border);
4962
4963         width -= (border.left + border.right + 2 * view->spacing);
4964         height -= (border.top + border.bottom + 2 * view->spacing - 1);
4965
4966         /* FIXME: We really need to calculate the overall height here, not the
4967          * page height.  We assume there's always a vertical scrollbar for
4968          * now.  We need to fix this. */
4969         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
4970                 scale = zoom_for_size_fit_width (doc_width, doc_height, width - vsb_width, height, 0);
4971         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
4972                 scale = zoom_for_size_best_fit (doc_width, doc_height, width - vsb_width, height, 0, hsb_height);
4973         else
4974                 g_assert_not_reached ();
4975
4976         ev_view_set_zoom (view, scale, FALSE);
4977 }
4978
4979 static void
4980 ev_view_zoom_for_size_dual_page (EvView *view,
4981                                  int     width,
4982                                  int     height,
4983                                  int     vsb_width,
4984                                  int     hsb_height)
4985 {
4986         GtkBorder border;
4987         gint doc_width, doc_height;
4988         gdouble scale;
4989         gint other_page;
4990
4991         other_page = view->current_page ^ 1;
4992
4993         /* Find the largest of the two. */
4994         ev_page_cache_get_size (view->page_cache,
4995                                 view->current_page,
4996                                 view->rotation,
4997                                 1.0,
4998                                 &doc_width, &doc_height);
4999
5000         if (other_page < ev_page_cache_get_n_pages (view->page_cache)) {
5001                 gint width_2, height_2;
5002                 ev_page_cache_get_size (view->page_cache,
5003                                         other_page,
5004                                         view->rotation,
5005                                         1.0,
5006                                         &width_2, &height_2);
5007                 if (width_2 > doc_width)
5008                         doc_width = width_2;
5009                 if (height_2 > doc_height)
5010                         doc_height = height_2;
5011         }
5012         compute_border (view, doc_width, doc_height, &border);
5013
5014         doc_width = doc_width * 2;
5015         width -= ((border.left + border.right)* 2 + 3 * view->spacing);
5016         height -= (border.top + border.bottom + 2 * view->spacing);
5017
5018         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
5019                 scale = zoom_for_size_fit_width (doc_width, doc_height, width, height, vsb_width);
5020         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
5021                 scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, vsb_width, hsb_height);
5022         else
5023                 g_assert_not_reached ();
5024
5025         ev_view_set_zoom (view, scale, FALSE);
5026 }
5027
5028 static void
5029 ev_view_zoom_for_size_single_page (EvView *view,
5030                                    int     width,
5031                                    int     height,
5032                                    int     vsb_width,
5033                                    int     hsb_height)
5034 {
5035         int doc_width, doc_height;
5036         GtkBorder border;
5037         gdouble scale;
5038
5039         ev_page_cache_get_size (view->page_cache,
5040                                 view->current_page,
5041                                 view->rotation,
5042                                 1.0,
5043                                 &doc_width,
5044                                 &doc_height);
5045         /* Get an approximate border */
5046         compute_border (view, width, height, &border);
5047
5048         width -= (border.left + border.right + 2 * view->spacing);
5049         height -= (border.top + border.bottom + 2 * view->spacing);
5050
5051         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
5052                 scale = zoom_for_size_fit_width (doc_width, doc_height, width, height, vsb_width);
5053         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
5054                 scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, vsb_width, hsb_height);
5055         else
5056                 g_assert_not_reached ();
5057
5058         ev_view_set_zoom (view, scale, FALSE);
5059 }
5060
5061 static void
5062 ev_view_set_zoom_for_size (EvView *view,
5063                            int     width,
5064                            int     height,
5065                            int     vsb_width,
5066                            int     hsb_height)
5067 {
5068         g_return_if_fail (EV_IS_VIEW (view));
5069         g_return_if_fail (view->sizing_mode == EV_SIZING_FIT_WIDTH ||
5070                           view->sizing_mode == EV_SIZING_BEST_FIT);
5071         g_return_if_fail (width >= 0);
5072         g_return_if_fail (height >= 0);
5073
5074         if (view->document == NULL)
5075                 return;
5076
5077         if (view->presentation)
5078                 ev_view_zoom_for_size_presentation (view, width, height);
5079         else if (view->continuous && view->dual_page)
5080                 ev_view_zoom_for_size_continuous_and_dual_page (view, width, height, vsb_width, hsb_height);
5081         else if (view->continuous)
5082                 ev_view_zoom_for_size_continuous (view, width, height, vsb_width, hsb_height);
5083         else if (view->dual_page)
5084                 ev_view_zoom_for_size_dual_page (view, width, height, vsb_width, hsb_height);
5085         else
5086                 ev_view_zoom_for_size_single_page (view, width, height, vsb_width, hsb_height);
5087 }
5088
5089 /*** Find ***/
5090 static void
5091 update_find_status_message (EvView *view, gboolean this_page)
5092 {
5093         char *message;
5094
5095         if (this_page) {
5096                 int results;
5097
5098                 results = ev_document_find_get_n_results
5099                                 (EV_DOCUMENT_FIND (view->document),
5100                                  view->current_page);
5101                 /* TRANS: Sometimes this could be better translated as
5102                    "%d hit(s) on this page".  Therefore this string
5103                    contains plural cases. */
5104                 message = g_strdup_printf (ngettext ("%d found on this page",
5105                                                      "%d found on this page",
5106                                                      results),
5107                                            results);
5108         } else {
5109                 double percent;
5110
5111                 percent = ev_document_find_get_progress
5112                                 (EV_DOCUMENT_FIND (view->document));
5113                 message = g_strdup_printf (_("%3d%% remaining to search"),
5114                                            (int) ((1.0 - percent) * 100));
5115
5116         }
5117         ev_view_set_find_status (view, message);
5118         g_free (message);
5119 }
5120
5121 const char *
5122 ev_view_get_find_status (EvView *view)
5123 {
5124         g_return_val_if_fail (EV_IS_VIEW (view), NULL);
5125
5126         return view->find_status;
5127 }
5128
5129 static void
5130 ev_view_set_find_status (EvView *view, const char *message)
5131 {
5132         g_return_if_fail (EV_IS_VIEW (view));
5133
5134         g_free (view->find_status);
5135         view->find_status = g_strdup (message);
5136         g_object_notify (G_OBJECT (view), "find-status");
5137 }
5138
5139 static void
5140 jump_to_find_result (EvView *view)
5141 {
5142         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
5143         EvRectangle rect;
5144         GdkRectangle view_rect;
5145         int n_results;
5146         int page = view->current_page;
5147
5148         n_results = ev_document_find_get_n_results (find, page);
5149
5150         if (n_results > 0  && view->find_result < n_results) {
5151                 ev_document_find_get_result
5152                         (find, page, view->find_result, &rect);
5153
5154                 doc_rect_to_view_rect (view, page, &rect, &view_rect);
5155                 ensure_rectangle_is_visible (view, &view_rect);
5156         }
5157 }
5158
5159 /**
5160  * jump_to_find_page
5161  * @view: #EvView instance
5162  * @direction: Direction to look
5163  * @shift: Shift from current page
5164  *
5165  * Jumps to the first page that has occurences of searched word.
5166  * Uses a direction where to look and a shift from current page.
5167  *
5168  */
5169 static void
5170 jump_to_find_page (EvView *view, EvViewFindDirection direction, gint shift)
5171 {
5172         int n_pages, i;
5173
5174         n_pages = ev_page_cache_get_n_pages (view->page_cache);
5175
5176         for (i = 0; i < n_pages; i++) {
5177                 int has_results;
5178                 int page;
5179
5180                 if (direction == EV_VIEW_FIND_NEXT)
5181                         page = view->current_page + i;
5182                 else
5183                         page = view->current_page - i;
5184                 page += shift;
5185
5186                 if (page >= n_pages) {
5187                         page = page - n_pages;
5188                 }
5189                 if (page < 0)
5190                         page = page + n_pages;
5191
5192                 has_results = ev_document_find_page_has_results
5193                                 (EV_DOCUMENT_FIND (view->document), page);
5194                 if (has_results == -1) {
5195                         break;
5196                 } else if (has_results == 1) {
5197                         ev_page_cache_set_current_page (view->page_cache, page);
5198                         break;
5199                 }
5200         }
5201 }
5202
5203 gboolean
5204 ev_view_can_find_next (EvView *view)
5205 {
5206         if (EV_IS_DOCUMENT_FIND (view->document)) {
5207                 EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
5208                 int i, n_pages;
5209
5210                 n_pages = ev_page_cache_get_n_pages (view->page_cache);
5211                 for (i = 0; i < n_pages; i++) {
5212                         if (ev_document_find_get_n_results (find, i) > 0) {
5213                                 return TRUE;
5214                         }
5215                 }
5216         }
5217
5218         return FALSE;
5219 }
5220
5221 void
5222 ev_view_find_next (EvView *view)
5223 {
5224         int n_results, n_pages;
5225         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
5226
5227         n_results = ev_document_find_get_n_results (find, view->current_page);
5228
5229         n_pages = ev_page_cache_get_n_pages (view->page_cache);
5230
5231         view->find_result++;
5232
5233         if (view->find_result >= n_results) {
5234
5235                 view->find_result = 0;
5236                 jump_to_find_page (view, EV_VIEW_FIND_NEXT, 1);
5237                 jump_to_find_result (view);
5238         } else {
5239                 jump_to_find_result (view);
5240                 gtk_widget_queue_draw (GTK_WIDGET (view));
5241         }
5242 }
5243
5244 gboolean
5245 ev_view_can_find_previous (EvView *view)
5246 {
5247         if (EV_IS_DOCUMENT_FIND (view->document)) {
5248                 EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
5249                 int i, n_pages;
5250
5251                 n_pages = ev_page_cache_get_n_pages (view->page_cache);
5252                 for (i = n_pages - 1; i >= 0; i--) {
5253                         if (ev_document_find_get_n_results (find, i) > 0) {
5254                                 return TRUE;
5255                         }
5256                 }
5257         }
5258
5259         return FALSE;
5260 }
5261 void
5262 ev_view_find_previous (EvView *view)
5263 {
5264         int n_results, n_pages;
5265         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
5266         EvPageCache *page_cache;
5267
5268         page_cache = ev_page_cache_get (view->document);
5269
5270         n_results = ev_document_find_get_n_results (find, view->current_page);
5271
5272         n_pages = ev_page_cache_get_n_pages (page_cache);
5273
5274         view->find_result--;
5275
5276         if (view->find_result < 0) {
5277
5278                 jump_to_find_page (view, EV_VIEW_FIND_PREV, -1);
5279                 view->find_result = ev_document_find_get_n_results (find, view->current_page) - 1;
5280                 jump_to_find_result (view);
5281         } else {
5282                 jump_to_find_result (view);
5283                 gtk_widget_queue_draw (GTK_WIDGET (view));
5284         }
5285 }
5286
5287 void ev_view_search_changed (EvView *view)
5288 {
5289         /* search string has changed, focus on new search result */
5290         view->jump_to_find_result = TRUE;
5291 }
5292
5293 void ev_view_set_highlight_search (EvView *view, gboolean value)
5294 {
5295         view->highlight_find_results = value;
5296         gtk_widget_queue_draw (GTK_WIDGET (view));
5297 }
5298
5299 /*** Selections ***/
5300
5301 /* compute_new_selection_rect/text calculates the area currently selected by
5302  * view_rect.  each handles a different mode;
5303  */
5304 static GList *
5305 compute_new_selection_rect (EvView       *view,
5306                             GdkPoint     *start,
5307                             GdkPoint     *stop)
5308 {
5309         GdkRectangle view_rect;
5310         int n_pages, i;
5311         GList *list = NULL;
5312
5313         g_assert (view->selection_mode == EV_VIEW_SELECTION_RECTANGLE);
5314
5315         view_rect.x = MIN (start->x, stop->x);
5316         view_rect.y = MIN (start->y, stop->y);
5317         view_rect.width = MAX (start->x, stop->x) - view_rect.x;
5318         view_rect.width = MAX (start->y, stop->y) - view_rect.y;
5319
5320         n_pages = ev_page_cache_get_n_pages (view->page_cache);
5321
5322         for (i = 0; i < n_pages; i++) {
5323                 GdkRectangle page_area;
5324                 GtkBorder border;
5325
5326                 if (get_page_extents (view, i, &page_area, &border)) {
5327                         GdkRectangle overlap;
5328
5329                         if (gdk_rectangle_intersect (&page_area, &view_rect, &overlap)) {
5330                                 EvViewSelection *selection;
5331
5332                                 selection = g_new0 (EvViewSelection, 1);
5333                                 selection->page = i;
5334                                 view_rect_to_doc_rect (view, &overlap, &page_area,
5335                                                        &(selection->rect));
5336
5337                                 list = g_list_append (list, selection);
5338                         }
5339                 }
5340         }
5341
5342         return list;
5343 }
5344
5345 static gboolean
5346 gdk_rectangle_point_in (GdkRectangle *rectangle,
5347                         GdkPoint     *point)
5348 {
5349         return rectangle->x <= point->x &&
5350                 rectangle->y <= point->y &&
5351                 point->x < rectangle->x + rectangle->width &&
5352                 point->y < rectangle->y + rectangle->height;
5353 }
5354
5355 static GList *
5356 compute_new_selection_text (EvView          *view,
5357                             EvSelectionStyle style,
5358                             GdkPoint        *start,
5359                             GdkPoint        *stop)
5360 {
5361         int n_pages, i, first, last;
5362         GList *list = NULL;
5363         EvViewSelection *selection;
5364         gint width, height;
5365         int start_page, end_page;
5366
5367         g_assert (view->selection_mode == EV_VIEW_SELECTION_TEXT);
5368
5369         n_pages = ev_page_cache_get_n_pages (view->page_cache);
5370
5371         /* First figure out the range of pages the selection
5372          * affects. */
5373         first = n_pages;
5374         last = 0;
5375         if (view->continuous) {
5376                 start_page = 0;
5377                 end_page = n_pages;
5378         } else if (view->dual_page) {
5379                 start_page = view->start_page;
5380                 end_page = view->end_page + 1;
5381         } else {
5382                 start_page = view->current_page;
5383                 end_page = view->current_page + 1;
5384         }
5385
5386         for (i = start_page; i < end_page; i++) {
5387                 GdkRectangle page_area;
5388                 GtkBorder border;
5389
5390                 get_page_extents (view, i, &page_area, &border);
5391                 if (gdk_rectangle_point_in (&page_area, start) ||
5392                     gdk_rectangle_point_in (&page_area, stop)) {
5393                         if (first == n_pages)
5394                                 first = i;
5395                         last = i;
5396                 }
5397
5398         }
5399
5400         /* Now create a list of EvViewSelection's for the affected
5401          * pages.  This could be an empty list, a list of just one
5402          * page or a number of pages.*/
5403         for (i = first; i < last + 1; i++) {
5404                 GdkRectangle page_area;
5405                 GtkBorder border;
5406                 GdkPoint *point;
5407
5408                 ev_page_cache_get_size (view->page_cache, i,
5409                                         view->rotation,
5410                                         1.0, &width, &height);
5411
5412                 selection = g_new0 (EvViewSelection, 1);
5413                 selection->page = i;
5414                 selection->style = style;
5415                 selection->rect.x1 = selection->rect.y1 = 0;
5416                 selection->rect.x2 = width;
5417                 selection->rect.y2 = height;
5418
5419                 get_page_extents (view, i, &page_area, &border);
5420
5421                 if (gdk_rectangle_point_in (&page_area, start))
5422                         point = start;
5423                 else
5424                         point = stop;
5425
5426                 if (i == first)
5427                         view_point_to_doc_point (view, point, &page_area,
5428                                                  &selection->rect.x1,
5429                                                  &selection->rect.y1);
5430
5431                 /* If the selection is contained within just one page,
5432                  * make sure we don't write 'start' into both points
5433                  * in selection->rect. */
5434                 if (first == last)
5435                         point = stop;
5436
5437                 if (i == last)
5438                         view_point_to_doc_point (view, point, &page_area,
5439                                                  &selection->rect.x2,
5440                                                  &selection->rect.y2);
5441
5442                 list = g_list_append (list, selection);
5443         }
5444
5445         return list;
5446 }
5447
5448 /* This function takes the newly calculated list, and figures out which regions
5449  * have changed.  It then queues a redraw approporiately.
5450  */
5451 static void
5452 merge_selection_region (EvView *view,
5453                         GList  *new_list)
5454 {
5455         GList *old_list;
5456         GList *new_list_ptr, *old_list_ptr;
5457
5458         /* Update the selection */
5459         old_list = ev_pixbuf_cache_get_selection_list (view->pixbuf_cache);
5460         g_list_foreach (view->selection_info.selections, (GFunc)selection_free, NULL);
5461         view->selection_info.selections = new_list;
5462         ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, new_list);
5463         g_object_notify (G_OBJECT (view), "has-selection");
5464
5465         new_list_ptr = new_list;
5466         old_list_ptr = old_list;
5467
5468         while (new_list_ptr || old_list_ptr) {
5469                 EvViewSelection *old_sel, *new_sel;
5470                 int cur_page;
5471                 GdkRegion *region = NULL;
5472
5473                 new_sel = (new_list_ptr) ? (new_list_ptr->data) : NULL;
5474                 old_sel = (old_list_ptr) ? (old_list_ptr->data) : NULL;
5475
5476                 /* Assume that the lists are in order, and we run through them
5477                  * comparing them, one page at a time.  We come out with the
5478                  * first page we see. */
5479                 if (new_sel && old_sel) {
5480                         if (new_sel->page < old_sel->page) {
5481                                 new_list_ptr = new_list_ptr->next;
5482                                 old_sel = NULL;
5483                         } else if (new_sel->page > old_sel->page) {
5484                                 old_list_ptr = old_list_ptr->next;
5485                                 new_sel = NULL;
5486                         } else {
5487                                 new_list_ptr = new_list_ptr->next;
5488                                 old_list_ptr = old_list_ptr->next;
5489                         }
5490                 } else if (new_sel) {
5491                         new_list_ptr = new_list_ptr->next;
5492                 } else if (old_sel) {
5493                         old_list_ptr = old_list_ptr->next;
5494                 }
5495
5496                 g_assert (new_sel || old_sel);
5497
5498                 /* is the page we're looking at on the screen?*/
5499                 cur_page = new_sel ? new_sel->page : old_sel->page;
5500                 if (cur_page < view->start_page || cur_page > view->end_page)
5501                         continue;
5502
5503                 /* seed the cache with a new page.  We are going to need the new
5504                  * region too. */
5505                 if (new_sel) {
5506                         GdkRegion *tmp_region = NULL;
5507
5508                         ev_pixbuf_cache_get_selection_surface (view->pixbuf_cache,
5509                                                                cur_page,
5510                                                                view->scale,
5511                                                                &tmp_region);
5512
5513                         if (tmp_region) {
5514                                 new_sel->covered_region = gdk_region_copy (tmp_region);
5515                         }
5516                 }
5517
5518                 /* Now we figure out what needs redrawing */
5519                 if (old_sel && new_sel) {
5520                         if (old_sel->covered_region && new_sel->covered_region) {
5521                                 /* We only want to redraw the areas that have
5522                                  * changed, so we xor the old and new regions
5523                                  * and redraw if it's different */
5524                                 region = gdk_region_copy (old_sel->covered_region);
5525                                 gdk_region_xor (region, new_sel->covered_region);
5526                                 if (gdk_region_empty (region)) {
5527                                         gdk_region_destroy (region);
5528                                         region = NULL;
5529                                 }
5530                         } else if (old_sel->covered_region) {
5531                                 region = gdk_region_copy (old_sel->covered_region);
5532                         } else if (new_sel->covered_region) {
5533                                 region = gdk_region_copy (new_sel->covered_region);
5534                         }
5535                 } else if (old_sel && !new_sel) {
5536                         if (old_sel->covered_region && !gdk_region_empty (old_sel->covered_region)) {
5537                                 region = gdk_region_copy (old_sel->covered_region);
5538                         }
5539                 } else if (!old_sel && new_sel) {
5540                         if (new_sel->covered_region && !gdk_region_empty (new_sel->covered_region)) {
5541                                 region = gdk_region_copy (new_sel->covered_region);
5542                         }
5543                 } else {
5544                         g_assert_not_reached ();
5545                 }
5546
5547                 /* Redraw the damaged region! */
5548                 if (region) {
5549                         GdkRectangle page_area;
5550                         GtkBorder border;
5551
5552                         /* I don't know why but the region is smaller
5553                          * than expected. This hack fixes it, I guess
5554                          * 10 pixels more won't hurt
5555                          */
5556                         gdk_region_shrink (region, -5, -5);
5557
5558                         get_page_extents (view, cur_page, &page_area, &border);
5559                         gdk_region_offset (region,
5560                                            page_area.x + border.left - view->scroll_x,
5561                                            page_area.y + border.top - view->scroll_y);
5562                         gdk_window_invalidate_region (view->layout.bin_window, region, TRUE);
5563                         gdk_region_destroy (region);
5564                 }
5565         }
5566
5567         /* Free the old list, now that we're done with it. */
5568         g_list_foreach (old_list, (GFunc) selection_free, NULL);
5569 }
5570
5571 static void
5572 compute_selections (EvView          *view,
5573                     EvSelectionStyle style,
5574                     GdkPoint        *start,
5575                     GdkPoint        *stop)
5576 {
5577         GList *list;
5578
5579         if (view->selection_mode == EV_VIEW_SELECTION_RECTANGLE)
5580                 list = compute_new_selection_rect (view, start, stop);
5581         else
5582                 list = compute_new_selection_text (view, style, start, stop);
5583         merge_selection_region (view, list);
5584 }
5585
5586 /* Free's the selection.  It's up to the caller to queue redraws if needed.
5587  */
5588 static void
5589 selection_free (EvViewSelection *selection)
5590 {
5591         if (selection->covered_region)
5592                 gdk_region_destroy (selection->covered_region);
5593         g_free (selection);
5594 }
5595
5596 static void
5597 clear_selection (EvView *view)
5598 {
5599         g_list_foreach (view->selection_info.selections, (GFunc)selection_free, NULL);
5600         view->selection_info.selections = NULL;
5601         view->selection_info.in_selection = FALSE;
5602         if (view->pixbuf_cache)
5603                 ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, NULL);
5604         g_object_notify (G_OBJECT (view), "has-selection");
5605 }
5606
5607 void
5608 ev_view_select_all (EvView *view)
5609 {
5610         GList *selections = NULL;
5611         int n_pages, i;
5612
5613         /* Disable selection on rotated pages for the 0.4.0 series */
5614         if (view->rotation != 0)
5615                 return;
5616
5617         clear_selection (view);
5618
5619         n_pages = ev_page_cache_get_n_pages (view->page_cache);
5620         for (i = 0; i < n_pages; i++) {
5621                 int width, height;
5622                 EvViewSelection *selection;
5623
5624                 ev_page_cache_get_size (view->page_cache,
5625                                         i,
5626                                         view->rotation,
5627                                         1.0, &width, &height);
5628
5629                 selection = g_new0 (EvViewSelection, 1);
5630                 selection->page = i;
5631                 selection->style = EV_SELECTION_STYLE_GLYPH;
5632                 selection->rect.x1 = selection->rect.y1 = 0;
5633                 selection->rect.x2 = width;
5634                 selection->rect.y2 = height;
5635
5636                 selections = g_list_append (selections, selection);
5637         }
5638
5639         merge_selection_region (view, selections);
5640         gtk_widget_queue_draw (GTK_WIDGET (view));
5641 }
5642
5643 gboolean
5644 ev_view_get_has_selection (EvView *view)
5645 {
5646         return view->selection_info.selections != NULL;
5647 }
5648
5649 static char *
5650 get_selected_text (EvView *view)
5651 {
5652         GString *text;
5653         GList *l;
5654         gchar *normalized_text;
5655         EvRenderContext *rc;
5656
5657         text = g_string_new (NULL);
5658         rc = ev_render_context_new (view->rotation, 1, view->scale);
5659
5660         ev_document_doc_mutex_lock ();
5661
5662         for (l = view->selection_info.selections; l != NULL; l = l->next) {
5663                 EvViewSelection *selection = (EvViewSelection *)l->data;
5664                 gchar *tmp;
5665
5666                 ev_render_context_set_page (rc, selection->page);
5667                 tmp = ev_selection_get_selected_text (EV_SELECTION (view->document),
5668                                                       rc, selection->style,
5669                                                       &(selection->rect));
5670
5671                 g_string_append (text, tmp);
5672                 g_free (tmp);
5673         }
5674
5675         ev_document_doc_mutex_unlock ();
5676
5677         g_object_unref (rc);
5678
5679         normalized_text = g_utf8_normalize (text->str, text->len, G_NORMALIZE_NFKC);
5680         g_string_free (text, TRUE);
5681         return normalized_text;
5682 }
5683
5684 void
5685 ev_view_copy (EvView *ev_view)
5686 {
5687         GtkClipboard *clipboard;
5688         char *text;
5689
5690         if (!EV_IS_SELECTION (ev_view->document))
5691                 return;
5692
5693         text = get_selected_text (ev_view);
5694         clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view),
5695                                               GDK_SELECTION_CLIPBOARD);
5696         gtk_clipboard_set_text (clipboard, text, -1);
5697         g_free (text);
5698 }
5699
5700 static void
5701 ev_view_primary_get_cb (GtkClipboard     *clipboard,
5702                         GtkSelectionData *selection_data,
5703                         guint             info,
5704                         gpointer          data)
5705 {
5706         EvView *ev_view = EV_VIEW (data);
5707         char *text;
5708
5709         if (!EV_IS_SELECTION (ev_view->document))
5710                 return;
5711
5712         text = get_selected_text (ev_view);
5713         if (text) {
5714                 gtk_selection_data_set_text (selection_data, text, -1);
5715                 g_free (text);
5716         }
5717 }
5718
5719 static void
5720 ev_view_primary_clear_cb (GtkClipboard *clipboard,
5721                           gpointer      data)
5722 {
5723         EvView *view = EV_VIEW (data);
5724
5725         clear_selection (view);
5726 }
5727
5728 static void
5729 ev_view_update_primary_selection (EvView *ev_view)
5730 {
5731         GtkClipboard *clipboard;
5732
5733         clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view),
5734                                               GDK_SELECTION_PRIMARY);
5735
5736         if (ev_view->selection_info.selections) {
5737                 if (!gtk_clipboard_set_with_owner (clipboard,
5738                                                    clipboard_targets,
5739                                                    G_N_ELEMENTS (clipboard_targets),
5740                                                    ev_view_primary_get_cb,
5741                                                    ev_view_primary_clear_cb,
5742                                                    G_OBJECT (ev_view)))
5743                         ev_view_primary_clear_cb (clipboard, ev_view);
5744         } else {
5745                 if (gtk_clipboard_get_owner (clipboard) == G_OBJECT (ev_view))
5746                         gtk_clipboard_clear (clipboard);
5747         }
5748 }
5749
5750 /*** Cursor operations ***/
5751
5752 static GdkCursor *
5753 ev_view_create_invisible_cursor(void)
5754 {
5755        GdkBitmap *empty;
5756        GdkColor black = { 0, 0, 0, 0 };
5757        static char bits[] = { 0x00 };
5758
5759        empty = gdk_bitmap_create_from_data (NULL, bits, 1, 1);
5760
5761        return gdk_cursor_new_from_pixmap (empty, empty, &black, &black, 0, 0);
5762 }
5763
5764 static void
5765 ev_view_set_cursor (EvView *view, EvViewCursor new_cursor)
5766 {
5767         GdkCursor *cursor = NULL;
5768         GdkDisplay *display;
5769         GtkWidget *widget;
5770
5771         if (view->cursor == new_cursor) {
5772                 return;
5773         }
5774
5775         widget = gtk_widget_get_toplevel (GTK_WIDGET (view));
5776         display = gtk_widget_get_display (widget);
5777         view->cursor = new_cursor;
5778
5779         switch (new_cursor) {
5780                 case EV_VIEW_CURSOR_NORMAL:
5781                         gdk_window_set_cursor (view->layout.bin_window, NULL);
5782                         break;
5783                 case EV_VIEW_CURSOR_IBEAM:
5784                         cursor = gdk_cursor_new_for_display (display, GDK_XTERM);
5785                         break;
5786                 case EV_VIEW_CURSOR_LINK:
5787                         cursor = gdk_cursor_new_for_display (display, GDK_HAND2);
5788                         break;
5789                 case EV_VIEW_CURSOR_WAIT:
5790                         cursor = gdk_cursor_new_for_display (display, GDK_WATCH);
5791                         break;
5792                 case EV_VIEW_CURSOR_HIDDEN:
5793                         cursor = ev_view_create_invisible_cursor ();
5794                         break;
5795                 case EV_VIEW_CURSOR_DRAG:
5796                         cursor = gdk_cursor_new_for_display (display, GDK_FLEUR);
5797                         break;
5798                 case EV_VIEW_CURSOR_AUTOSCROLL:
5799                         cursor = gdk_cursor_new_for_display (display, GDK_DOUBLE_ARROW);
5800                         break;
5801         }
5802
5803         if (cursor) {
5804                 gdk_window_set_cursor (view->layout.bin_window, cursor);
5805                 gdk_cursor_unref (cursor);
5806                 gdk_flush();
5807         }
5808 }
5809
5810 void
5811 ev_view_hide_cursor (EvView *view)
5812 {
5813        ev_view_set_cursor (view, EV_VIEW_CURSOR_HIDDEN);
5814 }
5815
5816 void
5817 ev_view_show_cursor (EvView *view)
5818 {
5819        ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
5820 }
5821
5822 static void
5823 ev_view_reset_presentation_state (EvView *view)
5824 {
5825         if (!view->presentation ||
5826             view->presentation_state == EV_PRESENTATION_NORMAL)
5827                 return;
5828
5829         view->presentation_state = EV_PRESENTATION_NORMAL;
5830         gdk_window_set_background (view->layout.bin_window,
5831                                    &GTK_WIDGET (view)->style->black);
5832         gtk_widget_queue_draw (GTK_WIDGET (view));
5833 }
5834
5835 gboolean
5836 ev_view_next_page (EvView *view)
5837 {
5838         int page, n_pages;
5839
5840         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
5841
5842         if (!view->page_cache)
5843                 return FALSE;
5844
5845         if (view->presentation &&
5846             (view->presentation_state == EV_PRESENTATION_BLACK ||
5847              view->presentation_state == EV_PRESENTATION_WHITE)) {
5848                 ev_view_reset_presentation_state (view);
5849                 return FALSE;
5850         }
5851
5852         if (view->animation) {
5853                 ev_view_transition_animation_finish (view->animation, view);
5854                 return TRUE;
5855         }
5856
5857         ev_view_presentation_transition_stop (view);
5858         ev_view_reset_presentation_state (view);
5859
5860         page = ev_page_cache_get_current_page (view->page_cache);
5861         n_pages = ev_page_cache_get_n_pages (view->page_cache);
5862
5863         if (view->dual_page && !view->presentation)
5864                 page = page + 2;
5865         else
5866                 page = page + 1;
5867
5868         if (page < n_pages) {
5869                 ev_page_cache_set_current_page (view->page_cache, page);
5870                 return TRUE;
5871         } else if (view->presentation && page == n_pages) {
5872                 view->presentation_state = EV_PRESENTATION_END;
5873                 gtk_widget_queue_draw (GTK_WIDGET (view));
5874                 return TRUE;
5875         } else if (view->dual_page && page == n_pages) {
5876                 ev_page_cache_set_current_page (view->page_cache, page - 1);
5877                 return TRUE;
5878         } else {
5879                 return FALSE;
5880         }
5881 }
5882
5883 gboolean
5884 ev_view_previous_page (EvView *view)
5885 {
5886         int page;
5887
5888         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
5889
5890         if (!view->page_cache)
5891                 return FALSE;
5892
5893         if (view->presentation &&
5894             view->presentation_state == EV_PRESENTATION_END) {
5895                 ev_view_reset_presentation_state (view);
5896                 return TRUE;
5897         }
5898
5899         if (view->presentation &&
5900             (view->presentation_state == EV_PRESENTATION_BLACK ||
5901              view->presentation_state == EV_PRESENTATION_WHITE)) {
5902                 ev_view_reset_presentation_state (view);
5903                 return FALSE;
5904         }
5905
5906         if (view->animation) {
5907                 ev_view_transition_animation_finish (view->animation, view);
5908                 return TRUE;
5909         }
5910
5911         ev_view_reset_presentation_state (view);
5912
5913         page = ev_page_cache_get_current_page (view->page_cache);
5914
5915         if (view->dual_page && !view->presentation)
5916                 page = page - 2;
5917         else
5918                 page = page - 1;
5919
5920         if (page >= 0) {
5921                 ev_page_cache_set_current_page (view->page_cache, page);
5922                 return TRUE;
5923         } else if (ev_view_get_dual_page (view) && page == -1) {
5924                 ev_page_cache_set_current_page (view->page_cache, 0);
5925                 return TRUE;
5926         } else {
5927                 return FALSE;
5928         }
5929 }
5930
5931 /*** Enum description for usage in signal ***/
5932
5933 GType
5934 ev_sizing_mode_get_type (void)
5935 {
5936   static GType etype = 0;
5937   if (etype == 0) {
5938     static const GEnumValue values[] = {
5939       { EV_SIZING_FIT_WIDTH, "EV_SIZING_FIT_WIDTH", "fit-width" },
5940       { EV_SIZING_BEST_FIT, "EV_SIZING_BEST_FIT", "best-fit" },
5941       { EV_SIZING_FREE, "EV_SIZING_FREE", "free" },
5942       { 0, NULL, NULL }
5943     };
5944     etype = g_enum_register_static ("EvSizingMode", values);
5945   }
5946   return etype;
5947 }
5948
5949 GType
5950 ev_scroll_type_get_type (void)
5951 {
5952   static GType etype = 0;
5953   if (etype == 0) {
5954     static const GEnumValue values[] = {
5955       { EV_SCROLL_PAGE_FORWARD, "EV_SCROLL_PAGE_FORWARD", "scroll-page-forward" },
5956       { EV_SCROLL_PAGE_BACKWARD, "EV_SCROLL_PAGE_BACKWARD", "scroll-page-backward" },
5957       { EV_SCROLL_STEP_FORWARD, "EV_SCROLL_STEP_FORWARD", "scroll-step-forward" },
5958       { EV_SCROLL_STEP_FORWARD, "EV_SCROLL_STEP_FORWARD", "scroll-step-forward" },
5959       { EV_SCROLL_STEP_UP, "EV_SCROLL_STEP_UP", "scroll-step-up" },
5960       { EV_SCROLL_STEP_DOWN, "EV_SCROLL_STEP_DOWN", "scroll-step-down" },
5961       { 0, NULL, NULL }
5962     };
5963     etype = g_enum_register_static ("EvScrollType", values);
5964   }
5965   return etype;
5966 }
5967
5968 void
5969 ev_view_update_view_size (EvView *view, GtkScrolledWindow * scrolled_window)
5970 {
5971         int width, height;
5972         GtkRequisition vsb_requisition;
5973         GtkRequisition hsb_requisition;
5974         int scrollbar_spacing;
5975
5976         /* Calculate the width available for the content */
5977         width  = GTK_WIDGET (scrolled_window)->allocation.width;
5978         height = GTK_WIDGET (scrolled_window)->allocation.height;
5979
5980         if (gtk_scrolled_window_get_shadow_type (scrolled_window) == GTK_SHADOW_IN
5981             && view) {
5982                 width -=  2 * GTK_WIDGET(view)->style->xthickness;
5983                 height -= 2 * GTK_WIDGET(view)->style->ythickness;
5984         }
5985
5986         gtk_widget_size_request (scrolled_window->vscrollbar, &vsb_requisition);
5987         gtk_widget_size_request (scrolled_window->hscrollbar, &hsb_requisition);
5988         gtk_widget_style_get (GTK_WIDGET (scrolled_window),
5989                               "scrollbar_spacing",
5990                               &scrollbar_spacing,
5991                               NULL);
5992
5993         if (EV_IS_VIEW(view)) {
5994                 ev_view_set_zoom_for_size (EV_VIEW (view),
5995                                            MAX (1, width),
5996                                            MAX (1, height),
5997                                            vsb_requisition.width + scrollbar_spacing,
5998                                            hsb_requisition.height + scrollbar_spacing);
5999         }
6000 }