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