shell/ev-view.c

   1 /* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8; c-indent-level: 8 -*- */
   2 /* this file is part of evince, a gnome document viewer
   3  *
   4  *  Copyright (C) 2004 Red Hat, Inc
   5  *
   6  * Evince is free software; you can redistribute it and/or modify it
   7  * under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * Evince is distributed in the hope that it will be useful, but
  12  * WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
  19  */
  20
  21 #include <config.h>
  22 #include <stdlib.h>
  23 #include <math.h>
  24 #include <string.h>
  25 #include <gtk/gtkalignment.h>
  26 #include <glib/gi18n.h>
  27 #include <gtk/gtkbindings.h>
  28 #include <gtk/gtkselection.h>
  29 #include <gtk/gtkclipboard.h>
  30 #include <gdk/gdkkeysyms.h>
  31
  32 #include "ev-marshal.h"
  33 #include "ev-view.h"
  34 #include "ev-view-private.h"
  35 #include "ev-utils.h"
  36 #include "ev-document-links.h"
  37 #include "ev-document-images.h"
  38 #include "ev-document-find.h"
  39 #include "ev-document-transition.h"
  40 #include "ev-document-forms.h"
  41 #include "ev-document-misc.h"
  42 #include "ev-job-queue.h"
  43 #include "ev-page-cache.h"
  44 #include "ev-pixbuf-cache.h"
  45 #include "ev-transition-animation.h"
  46 #if !GTK_CHECK_VERSION (2, 11, 7)
  47 #include "ev-tooltip.h"
  48 #endif
  49 #include "ev-application.h"
  50
  51 #define EV_VIEW_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass), EV_TYPE_VIEW, EvViewClass))
  52 #define EV_IS_VIEW_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), EV_TYPE_VIEW))
  53 #define EV_VIEW_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj), EV_TYPE_VIEW, EvViewClass))
  54
  55
  56 enum {
  57         PROP_0,
  58         PROP_FIND_STATUS,
  59         PROP_CONTINUOUS,
  60         PROP_DUAL_PAGE,
  61         PROP_FULLSCREEN,
  62         PROP_PRESENTATION,
  63         PROP_SIZING_MODE,
  64         PROP_ZOOM,
  65         PROP_ROTATION,
  66         PROP_HAS_SELECTION,
  67 };
  68
  69 enum {
  70         SIGNAL_BINDING_ACTIVATED,
  71         SIGNAL_ZOOM_INVALID,
  72         SIGNAL_HANDLE_LINK,
  73         SIGNAL_EXTERNAL_LINK,
  74         SIGNAL_POPUP_MENU,
  75         N_SIGNALS,
  76 };
  77
  78 enum {
  79         TARGET_DND_URI,
  80         TARGET_DND_TEXT,
  81         TARGET_DND_IMAGE
  82 };
  83
  84 enum {
  85         TARGET_STRING,
  86         TARGET_TEXT,
  87         TARGET_COMPOUND_TEXT,
  88         TARGET_UTF8_STRING,
  89         TARGET_TEXT_BUFFER_CONTENTS
  90 };
  91
  92 static const GtkTargetEntry clipboard_targets[] = {
  93         { "STRING", 0, TARGET_STRING },
  94         { "TEXT",   0, TARGET_TEXT },
  95         { "COMPOUND_TEXT", 0, TARGET_COMPOUND_TEXT },
  96         { "UTF8_STRING", 0, TARGET_UTF8_STRING },
  97 };
  98
  99 static const GtkTargetEntry view_drop_targets[] = {
 100         { "text/uri-list", 0, 0 }
 101 };
 102
 103 static guint signals[N_SIGNALS];
 104
 105 typedef enum {
 106         EV_VIEW_FIND_NEXT,
 107         EV_VIEW_FIND_PREV
 108 } EvViewFindDirection;
 109
 110 #define ZOOM_IN_FACTOR  1.2
 111 #define ZOOM_OUT_FACTOR (1.0/ZOOM_IN_FACTOR)
 112
 113 #define MIN_SCALE 0.05409
 114 #define MAX_SCALE 4.0
 115
 116 #define SCROLL_TIME 150
 117
 118 /*** Scrolling ***/
 119 static void       scroll_to_current_page                     (EvView *view,
 120                                                               GtkOrientation orientation);
 121 static void       ev_view_set_scroll_adjustments             (GtkLayout          *layout,
 122                                                               GtkAdjustment      *hadjustment,
 123                                                               GtkAdjustment      *vadjustment);
 124 static void       view_update_range_and_current_page         (EvView             *view);
 125 static void       set_scroll_adjustment                      (EvView             *view,
 126                                                               GtkOrientation      orientation,
 127                                                               GtkAdjustment      *adjustment);
 128 static void       add_scroll_binding_keypad                  (GtkBindingSet      *binding_set,
 129                                                               guint               keyval,
 130                                                               GdkModifierType modifiers,
 131                                                               EvScrollType       scroll,
 132                                                               gboolean            horizontal);
 133 static void       ensure_rectangle_is_visible                (EvView             *view,
 134                                                               GdkRectangle       *rect);
 135
 136 /*** Geometry computations ***/
 137 static void       compute_border                             (EvView             *view,
 138                                                               int                 width,
 139                                                               int                 height,
 140                                                               GtkBorder          *border);
 141 static void       get_page_y_offset                          (EvView *view,
 142                                                               int page,
 143                                                               double zoom,
 144                                                               int *y_offset);
 145 static gboolean   get_page_extents                           (EvView             *view,
 146                                                               gint                page,
 147                                                               GdkRectangle       *page_area,
 148                                                               GtkBorder          *border);
 149 static void       view_rect_to_doc_rect                      (EvView             *view,
 150                                                               GdkRectangle       *view_rect,
 151                                                               GdkRectangle       *page_area,
 152                                                               EvRectangle        *doc_rect);
 153 static void       doc_rect_to_view_rect                      (EvView             *view,
 154                                                               int                 page,
 155                                                               EvRectangle        *doc_rect,
 156                                                               GdkRectangle       *view_rect);
 157 static void       find_page_at_location                      (EvView             *view,
 158                                                               gdouble             x,
 159                                                               gdouble             y,
 160                                                               gint               *page,
 161                                                               gint               *x_offset,
 162                                                               gint               *y_offset);
 163 static gboolean  doc_point_to_view_point                     (EvView             *view,
 164                                                               int                 page,
 165                                                               EvPoint            *doc_point,
 166                                                               GdkPoint           *view_point);
 167 /*** Hyperrefs ***/
 168 static EvLink *   ev_view_get_link_at_location               (EvView             *view,
 169                                                               gdouble             x,
 170                                                               gdouble             y);
 171 static char*      tip_from_link                              (EvView             *view,
 172                                                               EvLink             *link);
 173 /*** Forms ***/
 174 static EvFormField *ev_view_get_form_field_at_location       (EvView             *view,
 175                                                                gdouble            x,
 176                                                                gdouble            y);
 177
 178 /*** GtkWidget implementation ***/
 179 static void       ev_view_size_request_continuous_dual_page  (EvView             *view,
 180                                                               GtkRequisition     *requisition);
 181 static void       ev_view_size_request_continuous            (EvView             *view,
 182                                                               GtkRequisition     *requisition);
 183 static void       ev_view_size_request_dual_page             (EvView             *view,
 184                                                               GtkRequisition     *requisition);
 185 static void       ev_view_size_request_single_page           (EvView             *view,
 186                                                               GtkRequisition     *requisition);
 187 static void       ev_view_size_request                       (GtkWidget          *widget,
 188                                                               GtkRequisition     *requisition);
 189 static void       ev_view_size_allocate                      (GtkWidget          *widget,
 190                                                               GtkAllocation      *allocation);
 191 static void       ev_view_realize                            (GtkWidget          *widget);
 192 static gboolean   ev_view_scroll_event                       (GtkWidget          *widget,
 193                                                               GdkEventScroll     *event);
 194 static gboolean   ev_view_expose_event                       (GtkWidget          *widget,
 195                                                               GdkEventExpose     *event);
 196 static gboolean   ev_view_popup_menu                         (GtkWidget          *widget);
 197 static gboolean   ev_view_button_press_event                 (GtkWidget          *widget,
 198                                                               GdkEventButton     *event);
 199 static gboolean   ev_view_motion_notify_event                (GtkWidget          *widget,
 200                                                               GdkEventMotion     *event);
 201 static gboolean   ev_view_button_release_event               (GtkWidget          *widget,
 202                                                               GdkEventButton     *event);
 203 static gboolean   ev_view_enter_notify_event                 (GtkWidget          *widget,
 204                                                               GdkEventCrossing   *event);
 205 static gboolean   ev_view_leave_notify_event                 (GtkWidget          *widget,
 206                                                               GdkEventCrossing   *event);
 207 static void       ev_view_style_set                          (GtkWidget          *widget,
 208                                                               GtkStyle           *old_style);
 209 static void       ev_view_remove_all                         (EvView             *view);
 210
 211 static AtkObject *ev_view_get_accessible                     (GtkWidget *widget);
 212
 213 /*** Drawing ***/
 214 static guint32    ev_gdk_color_to_rgb                        (const GdkColor     *color);
 215 static void       draw_rubberband                            (GtkWidget          *widget,
 216                                                               GdkWindow          *window,
 217                                                               const GdkRectangle *rect,
 218                                                               guchar              alpha);
 219 static void       highlight_find_results                     (EvView             *view,
 220                                                               int                 page);
 221 static void       draw_one_page                              (EvView             *view,
 222                                                               gint                page,
 223                                                               cairo_t            *cr,
 224                                                               GdkRectangle       *page_area,
 225                                                               GtkBorder          *border,
 226                                                               GdkRectangle       *expose_area,
 227                                                               gboolean           *page_ready);
 228 static void       draw_loading_text                          (EvView             *view,
 229                                                               GdkRectangle       *page_area,
 230                                                               GdkRectangle       *expose_area);
 231
 232 /*** Callbacks ***/
 233 static void       find_changed_cb                            (EvDocument         *document,
 234                                                               int                 page,
 235                                                               EvView             *view);
 236 static void       job_finished_cb                            (EvPixbufCache      *pixbuf_cache,
 237                                                               GdkRegion          *region,
 238                                                               EvView             *view);
 239 static void       page_changed_cb                            (EvPageCache        *page_cache,
 240                                                               int                 new_page,
 241                                                               EvView             *view);
 242 static void       on_adjustment_value_changed                (GtkAdjustment      *adjustment,
 243                                                               EvView             *view);
 244
 245 /*** GObject ***/
 246 static void       ev_view_finalize                           (GObject            *object);
 247 static void       ev_view_destroy                            (GtkObject          *object);
 248 static void       ev_view_set_property                       (GObject            *object,
 249                                                               guint               prop_id,
 250                                                               const GValue       *value,
 251                                                               GParamSpec         *pspec);
 252 static void       ev_view_get_property                       (GObject            *object,
 253                                                               guint               prop_id,
 254                                                               GValue             *value,
 255                                                               GParamSpec         *pspec);
 256 static void       ev_view_class_init                         (EvViewClass        *class);
 257 static void       ev_view_init                               (EvView             *view);
 258
 259 /*** Zoom and sizing ***/
 260 static double   zoom_for_size_fit_width                      (int doc_width,
 261                                                               int doc_height,
 262                                                               int target_width,
 263                                                               int target_height,
 264                                                               int vsb_width);
 265 static double   zoom_for_size_fit_height                     (int doc_width,
 266                                                               int doc_height,
 267                                                               int target_width,
 268                                                               int target_height,
 269                                                               int vsb_height);
 270 static double   zoom_for_size_best_fit                       (int doc_width,
 271                                                               int doc_height,
 272                                                               int target_width,
 273                                                               int target_height,
 274                                                               int vsb_width,
 275                                                               int hsb_width);
 276 static void     ev_view_zoom_for_size_presentation           (EvView *view,
 277                                                               int     width,
 278                                                               int     height);
 279 static void     ev_view_zoom_for_size_continuous_and_dual_page (EvView *view,
 280                                                                 int     width,
 281                                                                 int     height,
 282                                                                 int     vsb_width,
 283                                                                 int     hsb_height);
 284 static void     ev_view_zoom_for_size_continuous               (EvView *view,
 285                                                                 int     width,
 286                                                                 int     height,
 287                                                                 int     vsb_width,
 288                                                                 int     hsb_height);
 289 static void     ev_view_zoom_for_size_dual_page                (EvView *view,
 290                                                                 int     width,
 291                                                                 int     height,
 292                                                                 int     vsb_width,
 293                                                                 int     hsb_height);
 294 static void     ev_view_zoom_for_size_single_page              (EvView *view,
 295                                                                 int     width,
 296                                                                 int     height,
 297                                                                 int     vsb_width,
 298                                                                 int     hsb_height);
 299 /*** Cursors ***/
 300 static GdkCursor* ev_view_create_invisible_cursor            (void);
 301 static void       ev_view_set_cursor                         (EvView             *view,
 302                                                               EvViewCursor        new_cursor);
 303 static void       ev_view_handle_cursor_over_xy              (EvView *view,
 304                                                               gint x,
 305                                                               gint y);
 306
 307 /*** Find ***/
 308 static void       update_find_status_message                 (EvView             *view,
 309                                                               gboolean            this_page);
 310 static void       ev_view_set_find_status                    (EvView             *view,
 311                                                               const char         *message);
 312 static void       jump_to_find_result                        (EvView             *view);
 313 static void       jump_to_find_page                          (EvView             *view,
 314                                                               EvViewFindDirection direction,
 315                                                               gint                shift);
 316
 317 /*** Selection ***/
 318 static void       compute_selections                         (EvView             *view,
 319                                                               EvSelectionStyle    style,
 320                                                               GdkPoint           *start,
 321                                                               GdkPoint           *stop);
 322 static void       clear_selection                            (EvView             *view);
 323 static void       selection_free                             (EvViewSelection    *selection);
 324 static char*      get_selected_text                          (EvView             *ev_view);
 325 static void       ev_view_primary_get_cb                     (GtkClipboard       *clipboard,
 326                                                               GtkSelectionData   *selection_data,
 327                                                               guint               info,
 328                                                               gpointer            data);
 329 static void       ev_view_primary_clear_cb                   (GtkClipboard       *clipboard,
 330                                                               gpointer            data);
 331 static void       ev_view_update_primary_selection           (EvView             *ev_view);
 332
 333 /*** Presentation ***/
 334 static void       ev_view_presentation_transition_start      (EvView             *ev_view);
 335 static void       ev_view_presentation_transition_stop       (EvView             *ev_view);
 336
 337
 338 G_DEFINE_TYPE (EvView, ev_view, GTK_TYPE_LAYOUT)
 339
 340 static void
 341 scroll_to_current_page (EvView *view, GtkOrientation orientation)
 342 {
 343         GdkPoint view_point;
 344
 345         if (view->document == NULL) {
 346                 return;
 347         }
 348
 349         doc_point_to_view_point (view, view->current_page, &view->pending_point, &view_point);
 350
 351         if (orientation == GTK_ORIENTATION_VERTICAL) {
 352                 view->pending_point.y = 0;
 353         } else {
 354                 view->pending_point.x = 0;
 355         }
 356
 357         if (orientation == GTK_ORIENTATION_VERTICAL) {
 358                 if (view->continuous) {
 359                         gtk_adjustment_clamp_page (view->vadjustment,
 360                                                    view_point.y - view->spacing / 2,
 361                                                    view_point.y + view->vadjustment->page_size);
 362                 } else {
 363                         gtk_adjustment_set_value (view->vadjustment,
 364                                                   CLAMP (view_point.y,
 365                                                   view->vadjustment->lower,
 366                                                   view->vadjustment->upper -
 367                                                   view->vadjustment->page_size));
 368                 }
 369         } else {
 370                 if (view->dual_page) {
 371                         gtk_adjustment_clamp_page (view->hadjustment,
 372                                                    view_point.x,
 373                                                    view_point.x + view->hadjustment->page_size);
 374                 } else {
 375                         gtk_adjustment_set_value (view->hadjustment,
 376                                                   CLAMP (view_point.x,
 377                                                   view->hadjustment->lower,
 378                                                   view->hadjustment->upper -
 379                                                   view->hadjustment->page_size));
 380                 }
 381         }
 382 }
 383
 384 static void
 385 view_set_adjustment_values (EvView         *view,
 386                             GtkOrientation  orientation)
 387 {
 388         GtkWidget *widget = GTK_WIDGET (view);
 389         GtkAdjustment *adjustment;
 390         int requisition;
 391         int allocation;
 392
 393         double factor;
 394         gint new_value;
 395
 396         if (orientation == GTK_ORIENTATION_HORIZONTAL)  {
 397                 requisition = widget->requisition.width;
 398                 allocation = widget->allocation.width;
 399                 adjustment = view->hadjustment;
 400         } else {
 401                 requisition = widget->requisition.height;
 402                 allocation = widget->allocation.height;
 403                 adjustment = view->vadjustment;
 404         }
 405
 406         if (!adjustment)
 407                 return;
 408
 409         factor = 1.0;
 410         switch (view->pending_scroll) {
 411                 case SCROLL_TO_KEEP_POSITION:
 412                 case SCROLL_TO_FIND_LOCATION:
 413                         factor = (adjustment->value) / adjustment->upper;
 414                         break;
 415                 case SCROLL_TO_PAGE_POSITION:
 416                         break;
 417                 case SCROLL_TO_CENTER:
 418                         factor = (adjustment->value + adjustment->page_size * 0.5) / adjustment->upper;
 419                         break;
 420         }
 421
 422         adjustment->page_size = allocation;
 423         adjustment->step_increment = allocation * 0.1;
 424         adjustment->page_increment = allocation * 0.9;
 425         adjustment->lower = 0;
 426         adjustment->upper = MAX (allocation, requisition);
 427
 428         /*
 429          * We add 0.5 to the values before to average out our rounding errors.
 430          */
 431         switch (view->pending_scroll) {
 432                 case SCROLL_TO_KEEP_POSITION:
 433                 case SCROLL_TO_FIND_LOCATION:
 434                         new_value = CLAMP (adjustment->upper * factor + 0.5, 0, adjustment->upper - adjustment->page_size);
 435                         gtk_adjustment_set_value (adjustment, (int)new_value);
 436                         break;
 437                 case SCROLL_TO_PAGE_POSITION:
 438                         scroll_to_current_page (view, orientation);
 439                         break;
 440                 case SCROLL_TO_CENTER:
 441                         new_value = CLAMP (adjustment->upper * factor - adjustment->page_size * 0.5 + 0.5,
 442                                            0, adjustment->upper - adjustment->page_size);
 443                         gtk_adjustment_set_value (adjustment, (int)new_value);
 444                         break;
 445         }
 446
 447         gtk_adjustment_changed (adjustment);
 448 }
 449
 450 static void
 451 view_update_range_and_current_page (EvView *view)
 452 {
 453         gint current_page;
 454         gint best_current_page = -1;
 455
 456         /* Presentation trumps all other modes */
 457         if (view->presentation) {
 458                 view->start_page = view->current_page;
 459                 view->end_page = view->current_page;
 460         } else if (view->continuous) {
 461                 GdkRectangle current_area, unused, page_area;
 462                 GtkBorder border;
 463                 gboolean found = FALSE;
 464                 gint area_max = -1, area;
 465                 int i;
 466
 467                 if (!(view->vadjustment && view->hadjustment))
 468                         return;
 469
 470                 current_area.x = view->hadjustment->value;
 471                 current_area.width = view->hadjustment->upper;
 472                 current_area.y = view->vadjustment->value;
 473                 current_area.height = view->vadjustment->page_size;
 474
 475                 for (i = 0; i < ev_page_cache_get_n_pages (view->page_cache); i++) {
 476
 477                         get_page_extents (view, i, &page_area, &border);
 478
 479                         if (gdk_rectangle_intersect (&current_area, &page_area, &unused)) {
 480                                 area = unused.width * unused.height;
 481
 482                                 if (!found) {
 483                                         area_max = area;
 484                                         view->start_page = i;
 485                                         found = TRUE;
 486                                         best_current_page = i;
 487                                 }
 488                                 if (area > area_max) {
 489                                         best_current_page = (area == area_max) ? MIN (i, best_current_page) : i;
 490                                         area_max = area;
 491                                 }
 492
 493                                 view->end_page = i;
 494                         } else if (found && view->current_page <= view->end_page) {
 495                                 break;
 496                         }
 497                 }
 498
 499         } else if (view->dual_page) {
 500                 if (view->current_page % 2 == ev_page_cache_get_dual_even_left (view->page_cache)) {
 501                         view->start_page = view->current_page;
 502                         if (view->current_page + 1 < ev_page_cache_get_n_pages (view->page_cache))
 503                                 view->end_page = view->start_page + 1;
 504                         else
 505                                 view->end_page = view->start_page;
 506                 } else {
 507                         if (view->current_page < 1)
 508                                 view->start_page = view->current_page;
 509                         else
 510                                 view->start_page = view->current_page - 1;
 511                         view->end_page = view->current_page;
 512                 }
 513         } else {
 514                 view->start_page = view->current_page;
 515                 view->end_page = view->current_page;
 516         }
 517
 518         best_current_page = MAX (best_current_page, view->start_page);
 519         current_page = ev_page_cache_get_current_page (view->page_cache);
 520
 521         if ((current_page != best_current_page) && (view->pending_scroll == SCROLL_TO_KEEP_POSITION)) {
 522                 view->current_page = best_current_page;
 523                 ev_page_cache_set_current_page (view->page_cache, best_current_page);
 524         }
 525
 526         ev_pixbuf_cache_set_page_range (view->pixbuf_cache,
 527                                         view->start_page,
 528                                         view->end_page,
 529                                         view->rotation,
 530                                         view->scale,
 531                                         view->selection_info.selections);
 532 }
 533
 534 static void
 535 set_scroll_adjustment (EvView *view,
 536                        GtkOrientation  orientation,
 537                        GtkAdjustment  *adjustment)
 538 {
 539         GtkAdjustment **to_set;
 540
 541         if (orientation == GTK_ORIENTATION_HORIZONTAL)
 542                 to_set = &view->hadjustment;
 543         else
 544                 to_set = &view->vadjustment;
 545
 546         if (*to_set != adjustment) {
 547                 if (*to_set) {
 548                         g_signal_handlers_disconnect_by_func (*to_set,
 549                                                               (gpointer) on_adjustment_value_changed,
 550                                                               view);
 551                         g_object_unref (*to_set);
 552                 }
 553
 554                 *to_set = adjustment;
 555                 view_set_adjustment_values (view, orientation);
 556
 557                 if (*to_set) {
 558                         g_object_ref (*to_set);
 559                         g_signal_connect (*to_set, "value_changed",
 560                                           G_CALLBACK (on_adjustment_value_changed), view);
 561                 }
 562         }
 563 }
 564
 565 static void
 566 ev_view_set_scroll_adjustments (GtkLayout      *layout,
 567                                 GtkAdjustment  *hadjustment,
 568                                 GtkAdjustment  *vadjustment)
 569 {
 570         EvView *view = EV_VIEW (layout);
 571
 572         set_scroll_adjustment (view, GTK_ORIENTATION_HORIZONTAL, hadjustment);
 573         set_scroll_adjustment (view, GTK_ORIENTATION_VERTICAL, vadjustment);
 574
 575         on_adjustment_value_changed (NULL, view);
 576 }
 577
 578 static void
 579 add_scroll_binding_keypad (GtkBindingSet  *binding_set,
 580                            guint           keyval,
 581                            GdkModifierType modifiers,
 582                            EvScrollType    scroll,
 583                            gboolean        horizontal)
 584 {
 585   guint keypad_keyval = keyval - GDK_Left + GDK_KP_Left;
 586
 587   gtk_binding_entry_add_signal (binding_set, keyval, modifiers,
 588                                 "binding_activated", 2,
 589                                 EV_TYPE_SCROLL_TYPE, scroll,
 590                                 G_TYPE_BOOLEAN, horizontal);
 591   gtk_binding_entry_add_signal (binding_set, keypad_keyval, modifiers,
 592                                 "binding_activated", 2,
 593                                 EV_TYPE_SCROLL_TYPE, scroll,
 594                                 G_TYPE_BOOLEAN, horizontal);
 595 }
 596
 597 void
 598 ev_view_scroll (EvView        *view,
 599                 EvScrollType   scroll,
 600                 gboolean horizontal)
 601 {
 602         GtkAdjustment *adjustment;
 603         double value, increment;
 604         gboolean first_page = FALSE;
 605         gboolean last_page = FALSE;
 606
 607         view->jump_to_find_result = FALSE;
 608
 609         if (view->presentation || view->sizing_mode == EV_SIZING_BEST_FIT) {
 610                 switch (scroll) {
 611                         case EV_SCROLL_PAGE_BACKWARD:
 612                         case EV_SCROLL_STEP_BACKWARD:
 613                                 ev_view_previous_page (view);
 614                                 break;
 615                         case EV_SCROLL_PAGE_FORWARD:
 616                         case EV_SCROLL_STEP_FORWARD:
 617                                 ev_view_next_page (view);
 618                                 break;
 619                         default:
 620                                 break;
 621                 }
 622                 return;
 623         }
 624
 625         /* Assign values for increment and vertical adjustment */
 626         adjustment = horizontal ? view->hadjustment : view->vadjustment;
 627         increment = adjustment->page_size * 0.75;
 628         value = adjustment->value;
 629
 630         /* Assign boolean for first and last page */
 631         if (view->current_page == 0)
 632                 first_page = TRUE;
 633         if (view->current_page == ev_page_cache_get_n_pages (view->page_cache) - 1)
 634                 last_page = TRUE;
 635
 636         switch (scroll) {
 637                 case EV_SCROLL_PAGE_BACKWARD:
 638                         /* Do not jump backwards if at the first page */
 639                         if (value == (adjustment->lower) && first_page) {
 640                                 /* Do nothing */
 641                                 /* At the top of a page, assign the upper bound limit of previous page */
 642                         } else if (value == (adjustment->lower)) {
 643                                 value = adjustment->upper - adjustment->page_size;
 644                                 ev_view_previous_page (view);
 645                                 /* Jump to the top */
 646                         } else {
 647                                 value = MAX (value - increment, adjustment->lower);
 648                         }
 649                         break;
 650                 case EV_SCROLL_PAGE_FORWARD:
 651                         /* Do not jump forward if at the last page */
 652                         if (value == (adjustment->upper - adjustment->page_size) && last_page) {
 653                                 /* Do nothing */
 654                         /* At the bottom of a page, assign the lower bound limit of next page */
 655                         } else if (value == (adjustment->upper - adjustment->page_size)) {
 656                                 value = 0;
 657                                 ev_view_next_page (view);
 658                         /* Jump to the bottom */
 659                         } else {
 660                                 value = MIN (value + increment, adjustment->upper - adjustment->page_size);
 661                         }
 662                         break;
 663                 case EV_SCROLL_STEP_BACKWARD:
 664                         value -= adjustment->step_increment;
 665                         break;
 666                 case EV_SCROLL_STEP_FORWARD:
 667                         value += adjustment->step_increment;
 668                         break;
 669                 case EV_SCROLL_STEP_DOWN:
 670                         value -= adjustment->step_increment / 10;
 671                         break;
 672                 case EV_SCROLL_STEP_UP:
 673                         value += adjustment->step_increment / 10;
 674                         break;
 675                 default:
 676                         break;
 677         }
 678
 679         value = CLAMP (value, adjustment->lower,
 680                        adjustment->upper - adjustment->page_size);
 681
 682         gtk_adjustment_set_value (adjustment, value);
 683 }
 684
 685 #define MARGIN 5
 686
 687 static void
 688 ensure_rectangle_is_visible (EvView *view, GdkRectangle *rect)
 689 {
 690         GtkWidget *widget = GTK_WIDGET (view);
 691         GtkAdjustment *adjustment;
 692         int value;
 693
 694         view->pending_scroll = SCROLL_TO_FIND_LOCATION;
 695
 696         adjustment = view->vadjustment;
 697
 698         if (rect->y < adjustment->value) {
 699                 value = MAX (adjustment->lower, rect->y - MARGIN);
 700                 gtk_adjustment_set_value (view->vadjustment, value);
 701         } else if (rect->y + rect->height >
 702                    adjustment->value + widget->allocation.height) {
 703                 value = MIN (adjustment->upper, rect->y + rect->height -
 704                              widget->allocation.height + MARGIN);
 705                 gtk_adjustment_set_value (view->vadjustment, value);
 706         }
 707
 708         adjustment = view->hadjustment;
 709
 710         if (rect->x < adjustment->value) {
 711                 value = MAX (adjustment->lower, rect->x - MARGIN);
 712                 gtk_adjustment_set_value (view->hadjustment, value);
 713         } else if (rect->x + rect->height >
 714                    adjustment->value + widget->allocation.width) {
 715                 value = MIN (adjustment->upper, rect->x + rect->width -
 716                              widget->allocation.width + MARGIN);
 717                 gtk_adjustment_set_value (view->hadjustment, value);
 718         }
 719
 720         gtk_widget_queue_resize (GTK_WIDGET (view));
 721 }
 722
 723 /*** Geometry computations ***/
 724
 725 static void
 726 compute_border (EvView *view, int width, int height, GtkBorder *border)
 727 {
 728         if (view->presentation) {
 729                 border->left = 0;
 730                 border->right = 0;
 731                 border->top = 0;
 732                 border->bottom = 0;
 733         } else {
 734                 ev_document_misc_get_page_border_size (width, height, border);
 735         }
 736 }
 737
 738 static void
 739 get_page_y_offset (EvView *view, int page, double zoom, int *y_offset)
 740 {
 741         int max_width, offset;
 742         GtkBorder border;
 743
 744         g_return_if_fail (y_offset != NULL);
 745
 746         ev_page_cache_get_max_width (view->page_cache, view->rotation, zoom, &max_width);
 747
 748         compute_border (view, max_width, max_width, &border);
 749
 750         if (view->dual_page) {
 751                 ev_page_cache_get_height_to_page (view->page_cache, page,
 752                                                   view->rotation, zoom, NULL, &offset);
 753                 offset += ((page + ev_page_cache_get_dual_even_left (view->page_cache)) / 2 + 1) * view->spacing + ((page + ev_page_cache_get_dual_even_left (view->page_cache)) / 2 ) * (border.top + border.bottom);
 754         } else {
 755                 ev_page_cache_get_height_to_page (view->page_cache, page,
 756                                                   view->rotation, zoom, &offset, NULL);
 757                 offset += (page + 1) * view->spacing + page * (border.top + border.bottom);
 758         }
 759
 760         *y_offset = offset;
 761         return;
 762 }
 763
 764 static gboolean
 765 get_page_extents (EvView       *view,
 766                   gint          page,
 767                   GdkRectangle *page_area,
 768                   GtkBorder    *border)
 769 {
 770         GtkWidget *widget;
 771         int width, height;
 772
 773         widget = GTK_WIDGET (view);
 774
 775         /* Get the size of the page */
 776         ev_page_cache_get_size (view->page_cache, page,
 777                                 view->rotation,
 778                                 view->scale,
 779                                 &width, &height);
 780         compute_border (view, width, height, border);
 781         page_area->width = width + border->left + border->right;
 782         page_area->height = height + border->top + border->bottom;
 783
 784         if (view->presentation) {
 785                 page_area->x = (MAX (0, widget->allocation.width - width))/2;
 786                 page_area->y = (MAX (0, widget->allocation.height - height))/2;
 787         } else if (view->continuous) {
 788                 gint max_width;
 789                 gint x, y;
 790
 791                 ev_page_cache_get_max_width (view->page_cache, view->rotation,
 792                                              view->scale, &max_width);
 793                 max_width = max_width + border->left + border->right;
 794                 /* Get the location of the bounding box */
 795                 if (view->dual_page) {
 796                         x = view->spacing + ((page % 2 == ev_page_cache_get_dual_even_left (view->page_cache)) ? 0 : 1) * (max_width + view->spacing);
 797                         x = x + MAX (0, widget->allocation.width - (max_width * 2 + view->spacing * 3)) / 2;
 798                         if (page % 2 == ev_page_cache_get_dual_even_left (view->page_cache))
 799                                 x = x + (max_width - width - border->left - border->right);
 800                 } else {
 801                         x = view->spacing;
 802                         x = x + MAX (0, widget->allocation.width - (width + view->spacing * 2)) / 2;
 803                 }
 804
 805                 get_page_y_offset (view, page, view->scale, &y);
 806
 807                 page_area->x = x;
 808                 page_area->y = y;
 809         } else {
 810                 gint x, y;
 811                 if (view->dual_page) {
 812                         gint width_2, height_2;
 813                         gint max_width = width;
 814                         gint max_height = height;
 815                         GtkBorder overall_border;
 816                         gint other_page;
 817
 818                         other_page = (page % 2 == ev_page_cache_get_dual_even_left (view->page_cache)) ? page + 1: page - 1;
 819
 820                         /* First, we get the bounding box of the two pages */
 821                         if (other_page < ev_page_cache_get_n_pages (view->page_cache)
 822                             && (0 <= other_page)) {
 823                                 ev_page_cache_get_size (view->page_cache,
 824                                                         other_page,
 825                                                         view->rotation,
 826                                                         view->scale,
 827                                                         &width_2, &height_2);
 828                                 if (width_2 > width)
 829                                         max_width = width_2;
 830                                 if (height_2 > height)
 831                                         max_height = height_2;
 832                         }
 833                         compute_border (view, max_width, max_height, &overall_border);
 834
 835                         /* Find the offsets */
 836                         x = view->spacing;
 837                         y = view->spacing;
 838
 839                         /* Adjust for being the left or right page */
 840                         if (page % 2 == ev_page_cache_get_dual_even_left (view->page_cache))
 841                                 x = x + max_width - width;
 842                         else
 843                                 x = x + (max_width + overall_border.left + overall_border.right) + view->spacing;
 844
 845                         y = y + (max_height - height)/2;
 846
 847                         /* Adjust for extra allocation */
 848                         x = x + MAX (0, widget->allocation.width -
 849                                      ((max_width + overall_border.left + overall_border.right) * 2 + view->spacing * 3))/2;
 850                         y = y + MAX (0, widget->allocation.height - (height + view->spacing * 2))/2;
 851                 } else {
 852                         x = view->spacing;
 853                         y = view->spacing;
 854
 855                         /* Adjust for extra allocation */
 856                         x = x + MAX (0, widget->allocation.width - (width + border->left + border->right + view->spacing * 2))/2;
 857                         y = y + MAX (0, widget->allocation.height - (height + border->top + border->bottom +  view->spacing * 2))/2;
 858                 }
 859
 860                 page_area->x = x;
 861                 page_area->y = y;
 862         }
 863
 864         return TRUE;
 865 }
 866
 867 static void
 868 view_point_to_doc_point (EvView *view,
 869                          GdkPoint *view_point,
 870                          GdkRectangle *page_area,
 871                          double  *doc_point_x,
 872                          double  *doc_point_y)
 873 {
 874         *doc_point_x = (double) (view_point->x - page_area->x) / view->scale;
 875         *doc_point_y = (double) (view_point->y - page_area->y) / view->scale;
 876 }
 877
 878 static void
 879 view_rect_to_doc_rect (EvView *view,
 880                        GdkRectangle *view_rect,
 881                        GdkRectangle *page_area,
 882                        EvRectangle  *doc_rect)
 883 {
 884         doc_rect->x1 = (double) (view_rect->x - page_area->x) / view->scale;
 885         doc_rect->y1 = (double) (view_rect->y - page_area->y) / view->scale;
 886         doc_rect->x2 = doc_rect->x1 + (double) view_rect->width / view->scale;
 887         doc_rect->y2 = doc_rect->y1 + (double) view_rect->height / view->scale;
 888 }
 889
 890 static gboolean
 891 doc_point_to_view_point (EvView       *view,
 892                          int           page,
 893                          EvPoint      *doc_point,
 894                          GdkPoint     *view_point)
 895 {
 896         GdkRectangle page_area;
 897         GtkBorder border;
 898         double x, y, view_x, view_y;
 899         int width, height;
 900
 901         ev_page_cache_get_size (view->page_cache, page,
 902                                 view->rotation,
 903                                 1.0,
 904                                 &width, &height);
 905
 906         if (view->rotation == 0) {
 907                 x = doc_point->x;
 908                 y = doc_point->y;
 909         } else if (view->rotation == 90) {
 910                 x = width - doc_point->y;
 911                 y = doc_point->x;
 912         } else if (view->rotation == 180) {
 913                 x = width - doc_point->x;
 914                 y = height - doc_point->y;
 915         } else if (view->rotation == 270) {
 916                 x = doc_point->y;
 917                 y = height - doc_point->x;
 918         } else {
 919                 g_assert_not_reached ();
 920         }
 921
 922         get_page_extents (view, page, &page_area, &border);
 923
 924         view_x = x * view->scale;
 925         view_y = y * view->scale;
 926         view_point->x = view_x + page_area.x;
 927         view_point->y = view_y + page_area.y;
 928
 929         return (view_x > 0 && view_x <= page_area.width &&
 930                 view_y > 0 && view_y <= page_area.height);
 931 }
 932
 933 static void
 934 doc_rect_to_view_rect (EvView       *view,
 935                        int           page,
 936                        EvRectangle  *doc_rect,
 937                        GdkRectangle *view_rect)
 938 {
 939         GdkRectangle page_area;
 940         GtkBorder border;
 941         double x, y, w, h;
 942         int width, height;
 943
 944         ev_page_cache_get_size (view->page_cache, page,
 945                                 view->rotation,
 946                                 1.0,
 947                                 &width, &height);
 948
 949         if (view->rotation == 0) {
 950                 x = doc_rect->x1;
 951                 y = doc_rect->y1;
 952                 w = doc_rect->x2 - doc_rect->x1;
 953                 h = doc_rect->y2 - doc_rect->y1;
 954         } else if (view->rotation == 90) {
 955                 x = width - doc_rect->y2;
 956                 y = doc_rect->x1;
 957                 w = doc_rect->y2 - doc_rect->y1;
 958                 h = doc_rect->x2 - doc_rect->x1;
 959         } else if (view->rotation == 180) {
 960                 x = width - doc_rect->x2;
 961                 y = height - doc_rect->y2;
 962                 w = doc_rect->x2 - doc_rect->x1;
 963                 h = doc_rect->y2 - doc_rect->y1;
 964         } else if (view->rotation == 270) {
 965                 x = doc_rect->y1;
 966                 y = height - doc_rect->x2;
 967                 w = doc_rect->y2 - doc_rect->y1;
 968                 h = doc_rect->x2 - doc_rect->x1;
 969         } else {
 970                 g_assert_not_reached ();
 971         }
 972
 973         get_page_extents (view, page, &page_area, &border);
 974
 975         view_rect->x = x * view->scale + page_area.x;
 976         view_rect->y = y * view->scale + page_area.y;
 977         view_rect->width = w * view->scale;
 978         view_rect->height = h * view->scale;
 979 }
 980
 981 static void
 982 find_page_at_location (EvView  *view,
 983                        gdouble  x,
 984                        gdouble  y,
 985                        gint    *page,
 986                        gint    *x_offset,
 987                        gint    *y_offset)
 988 {
 989         int i;
 990
 991         if (view->document == NULL)
 992                 return;
 993
 994         g_assert (page);
 995         g_assert (x_offset);
 996         g_assert (y_offset);
 997
 998         for (i = view->start_page; i <= view->end_page; i++) {
 999                 GdkRectangle page_area;
1000                 GtkBorder border;
1001
1002                 if (! get_page_extents (view, i, &page_area, &border))
1003                         continue;
1004
1005                 if ((x >= page_area.x + border.left) &&
1006                     (x < page_area.x + page_area.width - border.right) &&
1007                     (y >= page_area.y + border.top) &&
1008                     (y < page_area.y + page_area.height - border.bottom)) {
1009                         *page = i;
1010                         *x_offset = x - (page_area.x + border.left);
1011                         *y_offset = y - (page_area.y + border.top);
1012                         return;
1013                 }
1014         }
1015
1016         *page = -1;
1017 }
1018
1019 static gboolean
1020 location_in_text (EvView  *view,
1021                   gdouble  x,
1022                   gdouble  y)
1023 {
1024         GdkRegion *region;
1025         gint page = -1;
1026         gint x_offset = 0, y_offset = 0;
1027
1028         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1029
1030         if (page == -1)
1031                 return FALSE;
1032
1033         region = ev_pixbuf_cache_get_text_mapping (view->pixbuf_cache, page);
1034
1035         if (region)
1036                 return gdk_region_point_in (region, x_offset / view->scale, y_offset / view->scale);
1037         else
1038                 return FALSE;
1039 }
1040
1041 static int
1042 ev_view_get_width (EvView *view)
1043 {
1044         return GTK_WIDGET (view)->allocation.width;
1045 }
1046
1047 static int
1048 ev_view_get_height (EvView *view)
1049 {
1050         return GTK_WIDGET (view)->allocation.height;
1051 }
1052
1053 static gboolean
1054 location_in_selected_text (EvView  *view,
1055                            gdouble  x,
1056                            gdouble  y)
1057 {
1058         gint page = -1;
1059         gint x_offset = 0, y_offset = 0;
1060         EvViewSelection *selection;
1061         GList *l = NULL;
1062
1063         for (l = view->selection_info.selections; l != NULL; l = l->next) {
1064                 selection = (EvViewSelection *)l->data;
1065
1066                 find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1067
1068                 if (page != selection->page)
1069                         continue;
1070
1071                 if (selection->covered_region &&
1072                     gdk_region_point_in (selection->covered_region, x_offset, y_offset))
1073                         return TRUE;
1074         }
1075
1076         return FALSE;
1077 }
1078
1079 static gboolean
1080 get_doc_point_from_offset (EvView *view,
1081                            gint    page,
1082                            gint    x_offset,
1083                            gint    y_offset,
1084                            gint   *x_new,
1085                            gint   *y_new)
1086 {
1087         int width, height;
1088         double x, y;
1089
1090         ev_page_cache_get_size (view->page_cache, page,
1091                                 view->rotation,
1092                                 1.0,
1093                                 &width, &height);
1094
1095         x_offset = x_offset / view->scale;
1096         y_offset = y_offset / view->scale;
1097
1098         if (view->rotation == 0) {
1099                 x = x_offset;
1100                 y = y_offset;
1101         } else if (view->rotation == 90) {
1102                 x = y_offset;
1103                 y = width - x_offset;
1104         } else if (view->rotation == 180) {
1105                 x = width - x_offset;
1106                 y = height - y_offset;
1107         } else if (view->rotation == 270) {
1108                 x = height - y_offset;
1109                 y = x_offset;
1110         } else {
1111                 g_assert_not_reached ();
1112         }
1113
1114         *x_new = x;
1115         *y_new = y;
1116
1117         return TRUE;
1118 }
1119
1120 /*** Hyperref ***/
1121 static EvLink *
1122 ev_view_get_link_at_location (EvView  *view,
1123                               gdouble  x,
1124                               gdouble  y)
1125 {
1126         gint page = -1;
1127         gint x_offset = 0, y_offset = 0;
1128         gint x_new = 0, y_new = 0;
1129         GList *link_mapping;
1130
1131         if (!EV_IS_DOCUMENT_LINKS (view->document))
1132                 return NULL;
1133
1134         x += view->scroll_x;
1135         y += view->scroll_y;
1136
1137         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1138
1139         if (page == -1)
1140                 return NULL;
1141
1142
1143         if (get_doc_point_from_offset (view, page, x_offset,
1144                                        y_offset, &x_new, &y_new) == FALSE)
1145                 return NULL;
1146
1147         link_mapping = ev_pixbuf_cache_get_link_mapping (view->pixbuf_cache, page);
1148
1149         if (link_mapping)
1150                 return ev_link_mapping_find (link_mapping, x_new, y_new);
1151         else
1152                 return NULL;
1153 }
1154
1155 static void
1156 goto_fitr_dest (EvView *view, EvLinkDest *dest)
1157 {
1158         EvPoint doc_point;
1159         gdouble zoom, left, top;
1160         gboolean change_left, change_top;
1161
1162         left = ev_link_dest_get_left (dest, &change_left);
1163         top = ev_link_dest_get_top (dest, &change_top);
1164
1165         zoom = zoom_for_size_best_fit (ev_link_dest_get_right (dest) - left,
1166                                        ev_link_dest_get_bottom (dest) - top,
1167                                        ev_view_get_width (view),
1168                                        ev_view_get_height (view), 0, 0);
1169
1170         ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1171         ev_view_set_zoom (view, zoom, FALSE);
1172
1173         doc_point.x = change_left ? left : 0;
1174         doc_point.y = change_top ? top : 0;
1175
1176         view->current_page = ev_link_dest_get_page (dest);
1177         if (change_left || change_top)
1178                 view->pending_point = doc_point;
1179         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1180
1181         gtk_widget_queue_resize (GTK_WIDGET (view));
1182 }
1183
1184 static void
1185 goto_fitv_dest (EvView *view, EvLinkDest *dest)
1186 {
1187         EvPoint doc_point;
1188         int doc_width, doc_height, page;
1189         double zoom, left;
1190         gboolean change_left;
1191
1192         page = ev_link_dest_get_page (dest);
1193         ev_page_cache_get_size (view->page_cache, page, 0, 1.0, &doc_width, &doc_height);
1194
1195         left = ev_link_dest_get_left (dest, &change_left);
1196         doc_point.x = change_left ? left : 0;
1197         doc_point.y = 0;
1198
1199         zoom = zoom_for_size_fit_height (doc_width - doc_point.x , doc_height,
1200                                          ev_view_get_width (view),
1201                                          ev_view_get_height (view), 0);
1202
1203         ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1204         ev_view_set_zoom (view, zoom, FALSE);
1205
1206         view->current_page = page;
1207         if (change_left)
1208                 view->pending_point = doc_point;
1209         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1210
1211         gtk_widget_queue_resize (GTK_WIDGET (view));
1212 }
1213
1214 static void
1215 goto_fith_dest (EvView *view, EvLinkDest *dest)
1216 {
1217         EvPoint doc_point;
1218         int doc_width, doc_height, page;
1219         gdouble zoom, top;
1220         gboolean change_top;
1221
1222         page = ev_link_dest_get_page (dest);
1223         ev_page_cache_get_size (view->page_cache, page, 0, 1.0, &doc_width, &doc_height);
1224
1225         top = ev_link_dest_get_top (dest, &change_top);
1226
1227         doc_point.x = 0;
1228         doc_point.y = change_top ? top : 0;
1229
1230         zoom = zoom_for_size_fit_width (doc_width, top,
1231                                         ev_view_get_width (view),
1232                                         ev_view_get_height (view), 0);
1233
1234         ev_view_set_sizing_mode (view, EV_SIZING_FIT_WIDTH);
1235         ev_view_set_zoom (view, zoom, FALSE);
1236
1237         view->current_page = page;
1238         if (change_top)
1239                 view->pending_point = doc_point;
1240         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1241
1242         gtk_widget_queue_resize (GTK_WIDGET (view));
1243 }
1244
1245 static void
1246 goto_fit_dest (EvView *view, EvLinkDest *dest)
1247 {
1248         double zoom;
1249         int doc_width, doc_height;
1250         int page;
1251
1252         page = ev_link_dest_get_page (dest);
1253         ev_page_cache_get_size (view->page_cache, page, 0, 1.0, &doc_width, &doc_height);
1254
1255         zoom = zoom_for_size_best_fit (doc_width, doc_height, ev_view_get_width (view),
1256                                        ev_view_get_height (view), 0, 0);
1257
1258         ev_view_set_sizing_mode (view, EV_SIZING_BEST_FIT);
1259         ev_view_set_zoom (view, zoom, FALSE);
1260
1261         view->current_page = page;
1262         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1263
1264         gtk_widget_queue_resize (GTK_WIDGET (view));
1265 }
1266
1267 static void
1268 goto_xyz_dest (EvView *view, EvLinkDest *dest)
1269 {
1270         EvPoint doc_point;
1271         gint page;
1272         gdouble zoom, left, top;
1273         gboolean change_zoom, change_left, change_top;
1274
1275         zoom = ev_link_dest_get_zoom (dest, &change_zoom);
1276         page = ev_link_dest_get_page (dest);
1277
1278         if (change_zoom && zoom > 1) {
1279                 ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1280                 ev_view_set_zoom (view, zoom, FALSE);
1281         }
1282
1283         left = ev_link_dest_get_left (dest, &change_left);
1284         top = ev_link_dest_get_top (dest, &change_top);
1285
1286         doc_point.x = change_left ? left : 0;
1287         doc_point.y = change_top ? top : 0;
1288
1289         view->current_page = page;
1290         if (change_left || change_top)
1291                 view->pending_point = doc_point;
1292         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1293
1294         gtk_widget_queue_resize (GTK_WIDGET (view));
1295 }
1296
1297 static void
1298 goto_dest (EvView *view, EvLinkDest *dest)
1299 {
1300         EvLinkDestType type;
1301         int page, n_pages, current_page;
1302
1303         page = ev_link_dest_get_page (dest);
1304         n_pages = ev_page_cache_get_n_pages (view->page_cache);
1305
1306         if (page < 0 || page >= n_pages)
1307                 return;
1308
1309         current_page = view->current_page;
1310
1311         type = ev_link_dest_get_dest_type (dest);
1312
1313         switch (type) {
1314                 case EV_LINK_DEST_TYPE_PAGE:
1315                         ev_page_cache_set_current_page (view->page_cache, page);
1316                         break;
1317                 case EV_LINK_DEST_TYPE_FIT:
1318                         goto_fit_dest (view, dest);
1319                         break;
1320                 case EV_LINK_DEST_TYPE_FITH:
1321                         goto_fith_dest (view, dest);
1322                         break;
1323                 case EV_LINK_DEST_TYPE_FITV:
1324                         goto_fitv_dest (view, dest);
1325                         break;
1326                 case EV_LINK_DEST_TYPE_FITR:
1327                         goto_fitr_dest (view, dest);
1328                         break;
1329                 case EV_LINK_DEST_TYPE_XYZ:
1330                         goto_xyz_dest (view, dest);
1331                         break;
1332                 case EV_LINK_DEST_TYPE_PAGE_LABEL:
1333                         ev_page_cache_set_page_label (view->page_cache, ev_link_dest_get_page_label (dest));
1334                         break;
1335                 default:
1336                         g_assert_not_reached ();
1337         }
1338
1339         if (current_page != view->current_page)
1340                 ev_page_cache_set_current_page (view->page_cache,
1341                                                 view->current_page);
1342 }
1343
1344 static void
1345 ev_view_goto_dest (EvView *view, EvLinkDest *dest)
1346 {
1347         EvLinkDestType type;
1348
1349         type = ev_link_dest_get_dest_type (dest);
1350
1351         if (type == EV_LINK_DEST_TYPE_NAMED) {
1352                 EvLinkDest  *dest2;
1353                 const gchar *named_dest;
1354
1355                 named_dest = ev_link_dest_get_named_dest (dest);
1356                 dest2 = ev_document_links_find_link_dest (EV_DOCUMENT_LINKS (view->document),
1357                                                           named_dest);
1358                 if (dest2) {
1359                         goto_dest (view, dest2);
1360                         g_object_unref (dest2);
1361                 }
1362
1363                 return;
1364         }
1365
1366         goto_dest (view, dest);
1367 }
1368
1369 void
1370 ev_view_handle_link (EvView *view, EvLink *link)
1371 {
1372         EvLinkAction    *action = NULL;
1373         EvLinkActionType type;
1374
1375         action = ev_link_get_action (link);
1376         if (!action)
1377                 return;
1378
1379         type = ev_link_action_get_action_type (action);
1380
1381         switch (type) {
1382                 case EV_LINK_ACTION_TYPE_GOTO_DEST: {
1383                         EvLinkDest *dest;
1384
1385                         g_signal_emit (view, signals[SIGNAL_HANDLE_LINK], 0, link);
1386
1387                         dest = ev_link_action_get_dest (action);
1388                         ev_view_goto_dest (view, dest);
1389                 }
1390                         break;
1391                 case EV_LINK_ACTION_TYPE_GOTO_REMOTE:
1392                 case EV_LINK_ACTION_TYPE_EXTERNAL_URI:
1393                 case EV_LINK_ACTION_TYPE_LAUNCH:
1394                 case EV_LINK_ACTION_TYPE_NAMED:
1395                         g_signal_emit (view, signals[SIGNAL_EXTERNAL_LINK], 0, action);
1396                         break;
1397         }
1398 }
1399
1400 gchar *
1401 ev_view_page_label_from_dest (EvView *view, EvLinkDest *dest)
1402 {
1403         EvLinkDestType type;
1404         gchar *msg = NULL;
1405
1406         type = ev_link_dest_get_dest_type (dest);
1407
1408         switch (type) {
1409                 case EV_LINK_DEST_TYPE_NAMED: {
1410                         EvLinkDest  *dest2;
1411                         const gchar *named_dest;
1412
1413                         named_dest = ev_link_dest_get_named_dest (dest);
1414                         dest2 = ev_document_links_find_link_dest (EV_DOCUMENT_LINKS (view->document),
1415                                                                   named_dest);
1416                         if (dest2) {
1417                                 msg = ev_page_cache_get_page_label (view->page_cache,
1418                                                                     ev_link_dest_get_page (dest2));
1419                                 g_object_unref (dest2);
1420                         }
1421                 }
1422
1423                         break;
1424                 case EV_LINK_DEST_TYPE_PAGE_LABEL: {
1425                         msg = g_strdup (ev_link_dest_get_page_label (dest));
1426                 }
1427                         break;
1428                 default:
1429                         msg = ev_page_cache_get_page_label (view->page_cache,
1430                                                             ev_link_dest_get_page (dest));
1431         }
1432
1433         return msg;
1434 }
1435
1436 static char *
1437 tip_from_action_named (EvLinkAction *action)
1438 {
1439         const gchar *name = ev_link_action_get_name (action);
1440
1441         if (g_ascii_strcasecmp (name, "FirstPage") == 0) {
1442                 return g_strdup (_("Go to first page"));
1443         } else if (g_ascii_strcasecmp (name, "PrevPage") == 0) {
1444                 return g_strdup (_("Go to previous page"));
1445         } else if (g_ascii_strcasecmp (name, "NextPage") == 0) {
1446                 return g_strdup (_("Go to next page"));
1447         } else if (g_ascii_strcasecmp (name, "LastPage") == 0) {
1448                 return g_strdup (_("Go to last page"));
1449         } else if (g_ascii_strcasecmp (name, "GoToPage") == 0) {
1450                 return g_strdup (_("Go to page"));
1451         } else if (g_ascii_strcasecmp (name, "Find") == 0) {
1452                 return g_strdup (_("Find"));
1453         }
1454
1455         return NULL;
1456 }
1457
1458 static char *
1459 tip_from_link (EvView *view, EvLink *link)
1460 {
1461         EvLinkAction *action;
1462         EvLinkActionType type;
1463         char *msg = NULL;
1464         char *page_label;
1465         const char *title;
1466
1467         action = ev_link_get_action (link);
1468         title = ev_link_get_title (link);
1469
1470         if (!action)
1471                 return title ? g_strdup (title) : NULL;
1472
1473         type = ev_link_action_get_action_type (action);
1474
1475         switch (type) {
1476                 case EV_LINK_ACTION_TYPE_GOTO_DEST:
1477                         page_label = ev_view_page_label_from_dest (view,
1478                                                                    ev_link_action_get_dest (action));
1479                         if (page_label) {
1480                                 msg = g_strdup_printf (_("Go to page %s"), page_label);
1481                                 g_free (page_label);
1482                         }
1483                         break;
1484                 case EV_LINK_ACTION_TYPE_GOTO_REMOTE:
1485                         if (title) {
1486                                 msg = g_strdup_printf (_("Go to %s on file “%s”"), title,
1487                                                        ev_link_action_get_filename (action));
1488                         } else {
1489                                 msg = g_strdup_printf (_("Go to file “%s”"),
1490                                                        ev_link_action_get_filename (action));
1491                         }
1492                         break;
1493                 case EV_LINK_ACTION_TYPE_EXTERNAL_URI:
1494                         msg = g_strdup (ev_link_action_get_uri (action));
1495                         break;
1496                 case EV_LINK_ACTION_TYPE_LAUNCH:
1497                         msg = g_strdup_printf (_("Launch %s"),
1498                                                ev_link_action_get_filename (action));
1499                         break;
1500                 case EV_LINK_ACTION_TYPE_NAMED:
1501                         msg = tip_from_action_named (action);
1502                         break;
1503                 default:
1504                         if (title)
1505                                 msg = g_strdup (title);
1506                         break;
1507         }
1508
1509         return msg;
1510 }
1511
1512 static void
1513 ev_view_handle_cursor_over_xy (EvView *view, gint x, gint y)
1514 {
1515         EvLink      *link;
1516         EvFormField *field;
1517
1518         if (view->cursor == EV_VIEW_CURSOR_HIDDEN)
1519                 return;
1520
1521         if (view->drag_info.in_drag) {
1522                 if (view->cursor != EV_VIEW_CURSOR_DRAG)
1523                         ev_view_set_cursor (view, EV_VIEW_CURSOR_DRAG);
1524                 return;
1525         }
1526
1527         if (view->scroll_info.autoscrolling) {
1528                 if (view->cursor != EV_VIEW_CURSOR_AUTOSCROLL)
1529                         ev_view_set_cursor (view, EV_VIEW_CURSOR_AUTOSCROLL);
1530                 return;
1531         }
1532
1533         link = ev_view_get_link_at_location (view, x, y);
1534
1535 #if !GTK_CHECK_VERSION (2, 11, 7)
1536         if (view->link_tooltip == NULL) {
1537                 view->link_tooltip = ev_tooltip_new (GTK_WIDGET (view));
1538         }
1539
1540         if (view->hovered_link != link) {
1541                 view->hovered_link = link;
1542                 ev_tooltip_deactivate (EV_TOOLTIP (view->link_tooltip));
1543         }
1544 #endif
1545
1546         if (link) {
1547 #if GTK_CHECK_VERSION (2, 11, 7)
1548                 g_object_set (view, "has-tooltip", TRUE, NULL);
1549 #else
1550                 char *msg = tip_from_link (view, link);
1551
1552                 if (msg && g_utf8_validate (msg, -1, NULL)) {
1553                         EvTooltip *tooltip = EV_TOOLTIP (view->link_tooltip);
1554
1555                         ev_tooltip_set_position (tooltip, x, y);
1556                         ev_tooltip_set_text (tooltip, msg);
1557                         ev_tooltip_activate (tooltip);
1558                 }
1559                 g_free (msg);
1560 #endif
1561                 ev_view_set_cursor (view, EV_VIEW_CURSOR_LINK);
1562         } else if ((field = ev_view_get_form_field_at_location (view, x, y))) {
1563                 if (field->is_read_only) {
1564                         if (view->cursor == EV_VIEW_CURSOR_LINK ||
1565                             view->cursor == EV_VIEW_CURSOR_IBEAM ||
1566                             view->cursor == EV_VIEW_CURSOR_DRAG)
1567                                 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
1568                 } else if (EV_IS_FORM_FIELD_TEXT (field)) {
1569                         ev_view_set_cursor (view, EV_VIEW_CURSOR_IBEAM);
1570                 } else {
1571                         ev_view_set_cursor (view, EV_VIEW_CURSOR_LINK);
1572                 }
1573         } else if (location_in_text (view, x + view->scroll_x, y + view->scroll_y)) {
1574                 ev_view_set_cursor (view, EV_VIEW_CURSOR_IBEAM);
1575         } else {
1576                 if (view->cursor == EV_VIEW_CURSOR_LINK ||
1577                     view->cursor == EV_VIEW_CURSOR_IBEAM ||
1578                     view->cursor == EV_VIEW_CURSOR_DRAG ||
1579                     view->cursor == EV_VIEW_CURSOR_AUTOSCROLL)
1580                         ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
1581         }
1582 }
1583
1584 /*** Images ***/
1585 static EvImage *
1586 ev_view_get_image_at_location (EvView  *view,
1587                                gdouble  x,
1588                                gdouble  y)
1589 {
1590         gint page = -1;
1591         gint x_offset = 0, y_offset = 0;
1592         gint x_new = 0, y_new = 0;
1593         GList *image_mapping;
1594
1595         if (!EV_IS_DOCUMENT_IMAGES (view->document))
1596                 return NULL;
1597
1598         x += view->scroll_x;
1599         y += view->scroll_y;
1600
1601         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1602
1603         if (page == -1)
1604                 return NULL;
1605
1606         if (get_doc_point_from_offset (view, page, x_offset,
1607                                        y_offset, &x_new, &y_new) == FALSE)
1608                 return NULL;
1609
1610         image_mapping = ev_pixbuf_cache_get_image_mapping (view->pixbuf_cache, page);
1611
1612         if (image_mapping)
1613                 return ev_image_mapping_find (image_mapping, x_new, y_new);
1614         else
1615                 return NULL;
1616 }
1617
1618 /*** Forms ***/
1619 static EvFormField *
1620 ev_view_get_form_field_at_location (EvView  *view,
1621                                     gdouble  x,
1622                                     gdouble  y)
1623 {
1624         gint page = -1;
1625         gint x_offset = 0, y_offset = 0;
1626         gint x_new = 0, y_new = 0;
1627         GList *forms_mapping;
1628
1629         if (!EV_IS_DOCUMENT_FORMS (view->document))
1630                 return NULL;
1631
1632         x += view->scroll_x;
1633         y += view->scroll_y;
1634
1635         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1636
1637         if (page == -1)
1638                 return NULL;
1639
1640         if (get_doc_point_from_offset (view, page, x_offset,
1641                                        y_offset, &x_new, &y_new) == FALSE)
1642                 return NULL;
1643
1644         forms_mapping = ev_pixbuf_cache_get_form_field_mapping (view->pixbuf_cache, page);
1645
1646         if (forms_mapping)
1647                 return ev_form_field_mapping_find (forms_mapping, x_new, y_new);
1648         else
1649                 return NULL;
1650 }
1651
1652 static GdkRegion *
1653 ev_view_form_field_get_region (EvView      *view,
1654                                EvFormField *field)
1655 {
1656         EvRectangle  field_area;
1657         GdkRectangle view_area;
1658         GList       *forms_mapping;
1659
1660         forms_mapping = ev_pixbuf_cache_get_form_field_mapping (view->pixbuf_cache,
1661                                                                 field->page);
1662         ev_form_field_mapping_get_area (forms_mapping, field, &field_area);
1663         doc_rect_to_view_rect (view, field->page, &field_area, &view_area);
1664         view_area.x -= view->scroll_x;
1665         view_area.y -= view->scroll_y;
1666
1667         return gdk_region_rectangle (&view_area);
1668 }
1669
1670 static gboolean
1671 ev_view_forms_remove_widgets (EvView *view)
1672 {
1673         ev_view_remove_all (view);
1674
1675         return FALSE;
1676 }
1677
1678 static void
1679 ev_view_form_field_destroy (GtkWidget *widget,
1680                             EvView    *view)
1681 {
1682         g_idle_add ((GSourceFunc)ev_view_forms_remove_widgets, view);
1683 }
1684
1685 static GtkWidget *
1686 ev_view_form_field_button_create_widget (EvView      *view,
1687                                          EvFormField *field)
1688 {
1689         EvFormFieldButton *field_button = EV_FORM_FIELD_BUTTON (field);
1690         GdkRegion         *field_region = NULL;
1691
1692         switch (field_button->type) {
1693                 case EV_FORM_FIELD_BUTTON_PUSH:
1694                         return NULL;
1695                 case EV_FORM_FIELD_BUTTON_CHECK:
1696                 case EV_FORM_FIELD_BUTTON_RADIO: {
1697                         gboolean  state;
1698                         GList    *forms_mapping, *l;
1699
1700                         state = ev_document_forms_form_field_button_get_state (EV_DOCUMENT_FORMS (view->document),
1701                                                                                field);
1702
1703                         /* FIXME: it actually depends on NoToggleToOff flags */
1704                         if (field_button->type == EV_FORM_FIELD_BUTTON_RADIO &&
1705                             state && field_button->state)
1706                                 return NULL;
1707
1708                         field_region = ev_view_form_field_get_region (view, field);
1709
1710                         /* For radio buttons and checkbox buttons that are in a set
1711                          * we need to update also the region for the current selected item
1712                          */
1713                         forms_mapping = ev_pixbuf_cache_get_form_field_mapping (view->pixbuf_cache,
1714                                                                                 field->page);
1715                         for (l = forms_mapping; l; l = g_list_next (l)) {
1716                                 EvFormField *button = ((EvFormFieldMapping *)(l->data))->field;
1717                                 GdkRegion   *button_region;
1718
1719                                 if (button->id == field->id)
1720                                         continue;
1721
1722                                 /* FIXME: only buttons in the same group should be updated */
1723                                 if (!EV_IS_FORM_FIELD_BUTTON (button) ||
1724                                     EV_FORM_FIELD_BUTTON (button)->type != field_button->type ||
1725                                     EV_FORM_FIELD_BUTTON (button)->state != TRUE)
1726                                         continue;
1727
1728                                 button_region = ev_view_form_field_get_region (view, button);
1729                                 gdk_region_union (field_region, button_region);
1730                                 gdk_region_destroy (button_region);
1731                         }
1732
1733                         ev_document_forms_form_field_button_set_state (EV_DOCUMENT_FORMS (view->document),
1734                                                                        field, !state);
1735                         field_button->state = !state;
1736                 }
1737                         break;
1738         }
1739
1740         ev_pixbuf_cache_reload_page (view->pixbuf_cache,
1741                                      field_region,
1742                                      field->page,
1743                                      view->rotation,
1744                                      view->scale);
1745         gdk_region_destroy (field_region);
1746
1747         return NULL;
1748 }
1749
1750 static void
1751 ev_view_form_field_text_save (EvView    *view,
1752                               GtkWidget *widget)
1753 {
1754         EvFormField *field;
1755
1756         if (!view->document)
1757                 return;
1758
1759         field = g_object_get_data (G_OBJECT (widget), "form-field");
1760
1761         if (field->changed) {
1762                 EvFormFieldText *field_text = EV_FORM_FIELD_TEXT (field);
1763                 GdkRegion       *field_region;
1764
1765                 field_region = ev_view_form_field_get_region (view, field);
1766
1767                 ev_document_forms_form_field_text_set_text (EV_DOCUMENT_FORMS (view->document),
1768                                                             field, field_text->text);
1769                 field->changed = FALSE;
1770                 ev_pixbuf_cache_reload_page (view->pixbuf_cache,
1771                                              field_region,
1772                                              field->page,
1773                                              view->rotation,
1774                                              view->scale);
1775                 gdk_region_destroy (field_region);
1776         }
1777 }
1778
1779 static void
1780 ev_view_form_field_text_changed (GtkWidget   *widget,
1781                                  EvFormField *field)
1782 {
1783         EvFormFieldText *field_text = EV_FORM_FIELD_TEXT (field);
1784         gchar           *text = NULL;
1785
1786         if (GTK_IS_ENTRY (widget)) {
1787                 text = g_strdup (gtk_entry_get_text (GTK_ENTRY (widget)));
1788         } else if (GTK_IS_TEXT_BUFFER (widget)) {
1789                 GtkTextIter start, end;
1790
1791                 gtk_text_buffer_get_bounds (GTK_TEXT_BUFFER (widget), &start, &end);
1792                 text = gtk_text_buffer_get_text (GTK_TEXT_BUFFER (widget),
1793                                                  &start, &end, FALSE);
1794         }
1795
1796         if (!field_text->text ||
1797             (field_text->text && g_ascii_strcasecmp (field_text->text, text) != 0)) {
1798                 g_free (field_text->text);
1799                 field_text->text = text;
1800                 field->changed = TRUE;
1801         }
1802 }
1803
1804 static GtkWidget *
1805 ev_view_form_field_text_create_widget (EvView      *view,
1806                                        EvFormField *field)
1807 {
1808         EvFormFieldText *field_text = EV_FORM_FIELD_TEXT (field);
1809         GtkWidget       *text = NULL;
1810         gchar           *txt;
1811
1812         txt = ev_document_forms_form_field_text_get_text (EV_DOCUMENT_FORMS (view->document),
1813                                                           field);
1814
1815         switch (field_text->type) {
1816                 case EV_FORM_FIELD_TEXT_FILE_SELECT:
1817                         /* TODO */
1818                 case EV_FORM_FIELD_TEXT_NORMAL:
1819                         text = gtk_entry_new ();
1820                         gtk_entry_set_has_frame (GTK_ENTRY (text), FALSE);
1821                         gtk_entry_set_max_length (GTK_ENTRY (text), field_text->max_len);
1822                         gtk_entry_set_visibility (GTK_ENTRY (text), !field_text->is_password);
1823
1824                         if (txt) {
1825                                 gtk_entry_set_text (GTK_ENTRY (text), txt);
1826                                 g_free (txt);
1827                         }
1828
1829                         g_signal_connect (G_OBJECT (text), "changed",
1830                                           G_CALLBACK (ev_view_form_field_text_changed),
1831                                           field);
1832                         g_signal_connect_after (G_OBJECT (text), "activate",
1833                                                 G_CALLBACK (ev_view_form_field_destroy),
1834                                                 view);
1835                         break;
1836                 case EV_FORM_FIELD_TEXT_MULTILINE: {
1837                         GtkTextBuffer *buffer;
1838
1839                         text = gtk_text_view_new ();
1840                         buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (text));
1841
1842                         if (txt) {
1843                                 gtk_text_buffer_set_text (buffer, txt, -1);
1844                                 g_free (txt);
1845                         }
1846
1847                         g_signal_connect (G_OBJECT (buffer), "changed",
1848                                           G_CALLBACK (ev_view_form_field_text_changed),
1849                                           field);
1850                 }
1851                         break;
1852         }
1853
1854         g_object_weak_ref (G_OBJECT (text),
1855                            (GWeakNotify)ev_view_form_field_text_save,
1856                            view);
1857
1858         return text;
1859 }
1860
1861 static void
1862 ev_view_form_field_choice_save (EvView    *view,
1863                                 GtkWidget *widget)
1864 {
1865         EvFormField *field;
1866
1867         if (!view->document)
1868                 return;
1869
1870         field = g_object_get_data (G_OBJECT (widget), "form-field");
1871
1872         if (field->changed) {
1873                 GList             *l;
1874                 EvFormFieldChoice *field_choice = EV_FORM_FIELD_CHOICE (field);
1875                 GdkRegion         *field_region;
1876
1877                 field_region = ev_view_form_field_get_region (view, field);
1878
1879                 if (field_choice->is_editable) {
1880                         ev_document_forms_form_field_choice_set_text (EV_DOCUMENT_FORMS (view->document),
1881                                                                       field, field_choice->text);
1882                 } else {
1883                         ev_document_forms_form_field_choice_unselect_all (EV_DOCUMENT_FORMS (view->document), field);
1884                         for (l = field_choice->selected_items; l; l = g_list_next (l)) {
1885                                 ev_document_forms_form_field_choice_select_item (EV_DOCUMENT_FORMS (view->document),
1886                                                                                  field,
1887                                                                                  GPOINTER_TO_INT (l->data));
1888                         }
1889                 }
1890                 field->changed = FALSE;
1891                 ev_pixbuf_cache_reload_page (view->pixbuf_cache,
1892                                              field_region,
1893                                              field->page,
1894                                              view->rotation,
1895                                              view->scale);
1896                 gdk_region_destroy (field_region);
1897         }
1898 }
1899
1900 static void
1901 ev_view_form_field_choice_changed (GtkWidget   *widget,
1902                                    EvFormField *field)
1903 {
1904         EvFormFieldChoice *field_choice = EV_FORM_FIELD_CHOICE (field);
1905
1906         if (GTK_IS_COMBO_BOX (widget)) {
1907                 gint item;
1908
1909                 item = gtk_combo_box_get_active (GTK_COMBO_BOX (widget));
1910                 if (GPOINTER_TO_INT (field_choice->selected_items->data) != item) {
1911                         g_list_free (field_choice->selected_items);
1912                         field_choice->selected_items = NULL;
1913                         field_choice->selected_items = g_list_prepend (field_choice->selected_items,
1914                                                                        GINT_TO_POINTER (item));
1915                         field->changed = TRUE;
1916                 }
1917
1918                 if (GTK_IS_COMBO_BOX_ENTRY (widget)) {
1919                         gchar *text;
1920
1921                         text = gtk_combo_box_get_active_text (GTK_COMBO_BOX (widget));
1922                         if (!field_choice->text ||
1923                             (field_choice->text && g_ascii_strcasecmp (field_choice->text, text) != 0)) {
1924                                 g_free (field_choice->text);
1925                                 field_choice->text = text;
1926                                 field->changed = TRUE;
1927                         }
1928                 }
1929         } else if (GTK_IS_TREE_SELECTION (widget)) {
1930                 GtkTreeSelection *selection = GTK_TREE_SELECTION (widget);
1931                 GtkTreeModel     *model;
1932                 GList            *items, *l;
1933
1934                 items = gtk_tree_selection_get_selected_rows (selection, &model);
1935                 g_list_free (field_choice->selected_items);
1936                 field_choice->selected_items = NULL;
1937
1938                 for (l = items; l && l->data; l = g_list_next (l)) {
1939                         GtkTreeIter  iter;
1940                         GtkTreePath *path = (GtkTreePath *)l->data;
1941                         gint         item;
1942
1943                         gtk_tree_model_get_iter (model, &iter, path);
1944                         gtk_tree_model_get (model, &iter, 1, &item, -1);
1945
1946                         field_choice->selected_items = g_list_prepend (field_choice->selected_items,
1947                                                                        GINT_TO_POINTER (item));
1948
1949                         gtk_tree_path_free (path);
1950                 }
1951
1952                 g_list_free (items);
1953
1954                 field->changed = TRUE;
1955         }
1956 }
1957
1958 static GtkWidget *
1959 ev_view_form_field_choice_create_widget (EvView      *view,
1960                                          EvFormField *field)
1961 {
1962         EvFormFieldChoice *field_choice = EV_FORM_FIELD_CHOICE (field);
1963         GtkWidget         *choice;
1964         GtkTreeModel      *model;
1965         gint               n_items, i;
1966         gint               selected_item = 0;
1967
1968         n_items = ev_document_forms_form_field_choice_get_n_items (EV_DOCUMENT_FORMS (view->document),
1969                                                                    field);
1970         model = GTK_TREE_MODEL (gtk_list_store_new (2, G_TYPE_STRING, G_TYPE_INT));
1971         for (i = 0; i < n_items; i++) {
1972                 GtkTreeIter iter;
1973                 gchar      *item;
1974
1975                 item = ev_document_forms_form_field_choice_get_item (EV_DOCUMENT_FORMS (view->document),
1976                                                                      field, i);
1977                 if (ev_document_forms_form_field_choice_is_item_selected (
1978                             EV_DOCUMENT_FORMS (view->document), field, i)) {
1979                         selected_item = i;
1980                         /* FIXME: we need a get_selected_items function in poppler */
1981                         field_choice->selected_items = g_list_prepend (field_choice->selected_items,
1982                                                                        GINT_TO_POINTER (i));
1983                 }
1984
1985                 if (item) {
1986                         gtk_list_store_append (GTK_LIST_STORE (model), &iter);
1987                         gtk_list_store_set (GTK_LIST_STORE (model), &iter,
1988                                             0, item,
1989                                             1, i,
1990                                             -1);
1991                         g_free (item);
1992                 }
1993         }
1994
1995         if (field_choice->type == EV_FORM_FIELD_CHOICE_LIST) {
1996                 GtkCellRenderer  *renderer;
1997                 GtkWidget        *tree_view;
1998                 GtkTreeSelection *selection;
1999
2000                 tree_view = gtk_tree_view_new_with_model (model);
2001                 gtk_tree_view_set_headers_visible (GTK_TREE_VIEW (tree_view), FALSE);
2002
2003                 selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (tree_view));
2004                 if (field_choice->multi_select) {
2005                         gtk_tree_selection_set_mode (selection, GTK_SELECTION_MULTIPLE);
2006                 }
2007
2008                 /* TODO: set selected items */
2009
2010                 renderer = gtk_cell_renderer_text_new ();
2011                 gtk_tree_view_insert_column_with_attributes (GTK_TREE_VIEW (tree_view),
2012                                                              0,
2013                                                              "choix", renderer,
2014                                                              "text", 0,
2015                                                              NULL);
2016
2017                 choice = gtk_scrolled_window_new (NULL, NULL);
2018                 gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (choice),
2019                                                 GTK_POLICY_AUTOMATIC,
2020                                                 GTK_POLICY_AUTOMATIC);
2021                 gtk_container_add (GTK_CONTAINER (choice), tree_view);
2022                 gtk_widget_show (tree_view);
2023
2024                 g_signal_connect (G_OBJECT (selection), "changed",
2025                                   G_CALLBACK (ev_view_form_field_choice_changed),
2026                                   field);
2027                 g_signal_connect_after (G_OBJECT (selection), "changed",
2028                                         G_CALLBACK (ev_view_form_field_destroy),
2029                                         view);
2030         } else if (field_choice->is_editable) { /* ComboBoxEntry */
2031                 gchar *text;
2032
2033                 choice = gtk_combo_box_entry_new_with_model (model, 0);
2034                 text = ev_document_forms_form_field_choice_get_text (EV_DOCUMENT_FORMS (view->document), field);
2035                 if (text) {
2036                         gtk_entry_set_text (GTK_ENTRY (gtk_bin_get_child (GTK_BIN (choice))), text);
2037                         g_free (text);
2038                 }
2039
2040                 g_signal_connect (G_OBJECT (choice), "changed",
2041                                   G_CALLBACK (ev_view_form_field_choice_changed),
2042                                   field);
2043                 g_signal_connect_after (G_OBJECT (GTK_BIN (choice)->child), "activate",
2044                                         G_CALLBACK (ev_view_form_field_destroy),
2045                                         view);
2046         } else { /* ComboBoxText */
2047                 GtkCellRenderer *renderer;
2048
2049                 choice = gtk_combo_box_new_with_model (model);
2050                 renderer = gtk_cell_renderer_text_new ();
2051                 gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (choice),
2052                                             renderer, TRUE);
2053                 gtk_cell_layout_set_attributes (GTK_CELL_LAYOUT (choice),
2054                                                 renderer,
2055                                                 "text", 0,
2056                                                 NULL);
2057                 gtk_combo_box_set_active (GTK_COMBO_BOX (choice), selected_item);
2058                 gtk_combo_box_popup (GTK_COMBO_BOX (choice));
2059
2060                 g_signal_connect (G_OBJECT (choice), "changed",
2061                                   G_CALLBACK (ev_view_form_field_choice_changed),
2062                                   field);
2063                 g_signal_connect_after (G_OBJECT (choice), "changed",
2064                                         G_CALLBACK (ev_view_form_field_destroy),
2065                                         view);
2066         }
2067
2068         g_object_unref (model);
2069
2070         g_object_weak_ref (G_OBJECT (choice),
2071                            (GWeakNotify)ev_view_form_field_choice_save,
2072                            view);
2073
2074         return choice;
2075 }
2076
2077 static void
2078 ev_view_handle_form_field (EvView      *view,
2079                            EvFormField *field,
2080                            gdouble      x,
2081                            gdouble      y)
2082 {
2083         GtkWidget   *field_widget = NULL;
2084         GList       *form_field_mapping;
2085         EvRectangle  field_area;
2086         GdkRectangle view_area;
2087
2088         if (field->is_read_only)
2089                 return;
2090
2091         if (EV_IS_FORM_FIELD_BUTTON (field)) {
2092                 field_widget = ev_view_form_field_button_create_widget (view, field);
2093         } else if (EV_IS_FORM_FIELD_TEXT (field)) {
2094                 field_widget = ev_view_form_field_text_create_widget (view, field);
2095         } else if (EV_IS_FORM_FIELD_CHOICE (field)) {
2096                 field_widget = ev_view_form_field_choice_create_widget (view, field);
2097         } else if (EV_IS_FORM_FIELD_SIGNATURE (field)) {
2098                 /* TODO */
2099         }
2100
2101         /* Form field doesn't require a widget */
2102         if (!field_widget)
2103                 return;
2104
2105         g_object_set_data_full (G_OBJECT (field_widget), "form-field",
2106                                 g_object_ref (field),
2107                                 (GDestroyNotify)g_object_unref);
2108
2109         form_field_mapping = ev_pixbuf_cache_get_form_field_mapping (view->pixbuf_cache, field->page);
2110         ev_form_field_mapping_get_area (form_field_mapping, field, &field_area);
2111
2112         doc_rect_to_view_rect (view, field->page, &field_area, &view_area);
2113         view_area.x -= view->scroll_x;
2114         view_area.y -= view->scroll_y;
2115
2116         gtk_layout_put (GTK_LAYOUT (view), field_widget, view_area.x, view_area.y);
2117         gtk_widget_show (field_widget);
2118         gtk_widget_grab_focus (field_widget);
2119 }
2120
2121 /*** GtkWidget implementation ***/
2122
2123 static void
2124 ev_view_size_request_continuous_dual_page (EvView         *view,
2125                                            GtkRequisition *requisition)
2126 {
2127         int max_width;
2128         gint n_pages;
2129         GtkBorder border;
2130
2131         ev_page_cache_get_max_width (view->page_cache, view->rotation,
2132                                      view->scale, &max_width);
2133         compute_border (view, max_width, max_width, &border);
2134
2135         n_pages = ev_page_cache_get_n_pages (view->page_cache) + 1;
2136
2137         requisition->width = (max_width + border.left + border.right) * 2 + (view->spacing * 3);
2138         get_page_y_offset (view, n_pages, view->scale, &requisition->height);
2139
2140         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
2141                 requisition->width = 1;
2142         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
2143                 requisition->width = 1;
2144                 /* FIXME: This could actually be set on one page docs or docs
2145                  * with a strange aspect ratio. */
2146                 /* requisition->height = 1;*/
2147         }
2148 }
2149
2150 static void
2151 ev_view_size_request_continuous (EvView         *view,
2152                                  GtkRequisition *requisition)
2153 {
2154         int max_width;
2155         int n_pages;
2156         GtkBorder border;
2157
2158
2159         ev_page_cache_get_max_width (view->page_cache, view->rotation,
2160                                      view->scale, &max_width);
2161         n_pages = ev_page_cache_get_n_pages (view->page_cache);
2162         compute_border (view, max_width, max_width, &border);
2163
2164         requisition->width = max_width + (view->spacing * 2) + border.left + border.right;
2165         get_page_y_offset (view, n_pages, view->scale, &requisition->height);
2166
2167         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
2168                 requisition->width = 1;
2169         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
2170                 requisition->width = 1;
2171                 /* FIXME: This could actually be set on one page docs or docs
2172                  * with a strange aspect ratio. */
2173                 /* requisition->height = 1;*/
2174         }
2175 }
2176
2177 static void
2178 ev_view_size_request_dual_page (EvView         *view,
2179                                 GtkRequisition *requisition)
2180 {
2181         GtkBorder border;
2182         gint width, height;
2183
2184         /* Find the largest of the two. */
2185         ev_page_cache_get_size (view->page_cache,
2186                                 view->current_page,
2187                                 view->rotation,
2188                                 view->scale,
2189                                 &width, &height);
2190         if (view->current_page + 1 < ev_page_cache_get_n_pages (view->page_cache)) {
2191                 gint width_2, height_2;
2192                 ev_page_cache_get_size (view->page_cache,
2193                                         view->current_page + 1,
2194                                         view->rotation,
2195                                         view->scale,
2196                                         &width_2, &height_2);
2197                 if (width_2 > width) {
2198                         width = width_2;
2199                         height = height_2;
2200                 }
2201         }
2202         compute_border (view, width, height, &border);
2203
2204         requisition->width = ((width + border.left + border.right) * 2) +
2205                 (view->spacing * 3);
2206         requisition->height = (height + border.top + border.bottom) +
2207                 (view->spacing * 2);
2208
2209         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
2210                 requisition->width = 1;
2211         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
2212                 requisition->width = 1;
2213                 requisition->height = 1;
2214         }
2215 }
2216
2217 static void
2218 ev_view_size_request_single_page (EvView         *view,
2219                                   GtkRequisition *requisition)
2220 {
2221         GtkBorder border;
2222         gint width, height;
2223
2224         ev_page_cache_get_size (view->page_cache,
2225                                 view->current_page,
2226                                 view->rotation,
2227                                 view->scale,
2228                                 &width, &height);
2229         compute_border (view, width, height, &border);
2230
2231         requisition->width = width + border.left + border.right + (2 * view->spacing);
2232         requisition->height = height + border.top + border.bottom + (2 * view->spacing);
2233
2234         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
2235                 requisition->width = 1;
2236                 requisition->height = height + border.top + border.bottom + (2 * view->spacing);
2237         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
2238                 requisition->width = 1;
2239                 requisition->height = 1;
2240         }
2241 }
2242
2243 static void
2244 ev_view_size_request (GtkWidget      *widget,
2245                       GtkRequisition *requisition)
2246 {
2247         EvView *view = EV_VIEW (widget);
2248
2249         if (view->document == NULL) {
2250                 requisition->width = 1;
2251                 requisition->height = 1;
2252                 return;
2253         }
2254
2255         if (view->presentation) {
2256                 requisition->width = 1;
2257                 requisition->height = 1;
2258                 return;
2259         }
2260
2261         if (view->continuous && view->dual_page)
2262                 ev_view_size_request_continuous_dual_page (view, requisition);
2263         else if (view->continuous)
2264                 ev_view_size_request_continuous (view, requisition);
2265         else if (view->dual_page)
2266                 ev_view_size_request_dual_page (view, requisition);
2267         else
2268                 ev_view_size_request_single_page (view, requisition);
2269 }
2270
2271 static void
2272 ev_view_size_allocate (GtkWidget      *widget,
2273                        GtkAllocation  *allocation)
2274 {
2275         EvView *view = EV_VIEW (widget);
2276         GList  *children, *l;
2277
2278         GTK_WIDGET_CLASS (ev_view_parent_class)->size_allocate (widget, allocation);
2279
2280         if (view->sizing_mode == EV_SIZING_FIT_WIDTH ||
2281             view->sizing_mode == EV_SIZING_BEST_FIT) {
2282
2283                 g_signal_emit (view, signals[SIGNAL_ZOOM_INVALID], 0);
2284
2285                 ev_view_size_request (widget, &widget->requisition);
2286         }
2287
2288         view_set_adjustment_values (view, GTK_ORIENTATION_HORIZONTAL);
2289         view_set_adjustment_values (view, GTK_ORIENTATION_VERTICAL);
2290
2291         if (view->document)
2292                 view_update_range_and_current_page (view);
2293
2294         view->pending_scroll = SCROLL_TO_KEEP_POSITION;
2295         view->pending_resize = FALSE;
2296
2297         children = gtk_container_get_children (GTK_CONTAINER (widget));
2298         for (l = children; l && l->data; l = g_list_next (l)) {
2299                 EvFormField   *field;
2300                 EvRectangle    field_area;
2301                 GdkRectangle   view_area;
2302                 GList         *form_field_mapping;
2303                 GtkAllocation  child_allocation;
2304                 GtkRequisition child_requisition;
2305                 GtkWidget     *child = (GtkWidget *)l->data;
2306
2307                 field = g_object_get_data (G_OBJECT (child), "form-field");
2308                 if (!field)
2309                         continue;
2310
2311                 form_field_mapping = ev_pixbuf_cache_get_form_field_mapping (view->pixbuf_cache,
2312                                                                              field->page);
2313                 ev_form_field_mapping_get_area (form_field_mapping, field, &field_area);
2314
2315                 doc_rect_to_view_rect (view, field->page, &field_area, &view_area);
2316                 view_area.x -= view->scroll_x;
2317                 view_area.y -= view->scroll_y;
2318
2319                 gtk_widget_size_request (child, &child_requisition);
2320                 if (child_requisition.width != view_area.width ||
2321                     child_requisition.height != view_area.height)
2322                         gtk_widget_set_size_request (child, view_area.width, view_area.height);
2323
2324                 gtk_container_child_get (GTK_CONTAINER (widget),
2325                                          child,
2326                                          "x", &child_allocation.x,
2327                                          "y", &child_allocation.y,
2328                                          NULL);
2329                 if (child_allocation.x != view_area.x ||
2330                     child_allocation.y != view_area.y) {
2331                         gtk_layout_move (GTK_LAYOUT (widget), child, view_area.x, view_area.y);
2332                 }
2333         }
2334         g_list_free (children);
2335 }
2336
2337 static void
2338 ev_view_realize (GtkWidget *widget)
2339 {
2340         EvView *view = EV_VIEW (widget);
2341
2342         if (GTK_WIDGET_CLASS (ev_view_parent_class)->realize)
2343                 (* GTK_WIDGET_CLASS (ev_view_parent_class)->realize) (widget);
2344
2345         gdk_window_set_events (view->layout.bin_window,
2346                                (gdk_window_get_events (view->layout.bin_window) |
2347                                 GDK_EXPOSURE_MASK |
2348                                 GDK_BUTTON_PRESS_MASK |
2349                                 GDK_BUTTON_RELEASE_MASK |
2350                                 GDK_SCROLL_MASK |
2351                                 GDK_KEY_PRESS_MASK |
2352                                 GDK_POINTER_MOTION_MASK |
2353                                 GDK_POINTER_MOTION_HINT_MASK |
2354                                 GDK_ENTER_NOTIFY_MASK |
2355                                 GDK_LEAVE_NOTIFY_MASK));
2356
2357         if (view->presentation)
2358                 gdk_window_set_background (view->layout.bin_window, &widget->style->black);
2359         else
2360                 gdk_window_set_background (view->layout.bin_window, &widget->style->mid [GTK_STATE_NORMAL]);
2361 }
2362
2363 static gboolean
2364 ev_view_scroll_event (GtkWidget *widget, GdkEventScroll *event)
2365 {
2366         EvView *view = EV_VIEW (widget);
2367         guint state;
2368
2369         state = event->state & gtk_accelerator_get_default_mod_mask ();
2370
2371         if (state == GDK_CONTROL_MASK && view->presentation == FALSE) {
2372                 ev_view_set_sizing_mode (view, EV_SIZING_FREE);
2373
2374                 if (event->direction == GDK_SCROLL_UP ||
2375                     event->direction == GDK_SCROLL_LEFT) {
2376                         if (ev_view_can_zoom_in (view)) {
2377                                 ev_view_zoom_in (view);
2378                         }
2379                 } else {
2380                         if (ev_view_can_zoom_out (view)) {
2381                                 ev_view_zoom_out (view);
2382                         }
2383                 }
2384
2385                 return TRUE;
2386         }
2387
2388         view->jump_to_find_result = FALSE;
2389
2390         /* Shift+Wheel scrolls the in the perpendicular direction */
2391         if (state & GDK_SHIFT_MASK) {
2392                 if (event->direction == GDK_SCROLL_UP)
2393                         event->direction = GDK_SCROLL_LEFT;
2394                 else if (event->direction == GDK_SCROLL_LEFT)
2395                         event->direction = GDK_SCROLL_UP;
2396                 else if (event->direction == GDK_SCROLL_DOWN)
2397                         event->direction = GDK_SCROLL_RIGHT;
2398                 else if (event->direction == GDK_SCROLL_RIGHT)
2399                         event->direction = GDK_SCROLL_DOWN;
2400
2401                 event->state &= ~GDK_SHIFT_MASK;
2402                 state &= ~GDK_SHIFT_MASK;
2403         }
2404
2405         if (state == 0 && view->presentation) {
2406                 switch (event->direction) {
2407                         case GDK_SCROLL_DOWN:
2408                         case GDK_SCROLL_RIGHT:
2409                                 ev_view_next_page (view);
2410                                 break;
2411                         case GDK_SCROLL_UP:
2412                         case GDK_SCROLL_LEFT:
2413                                 ev_view_previous_page (view);
2414                                 break;
2415                 }
2416
2417                 return TRUE;
2418         }
2419
2420         return FALSE;
2421 }
2422
2423 static EvViewSelection *
2424 find_selection_for_page (EvView *view,
2425                          gint    page)
2426 {
2427         GList *list;
2428
2429         for (list = view->selection_info.selections; list != NULL; list = list->next) {
2430                 EvViewSelection *selection;
2431
2432                 selection = (EvViewSelection *) list->data;
2433
2434                 if (selection->page == page)
2435                         return selection;
2436         }
2437
2438         return NULL;
2439 }
2440
2441 static void
2442 draw_end_presentation_page (EvView       *view,
2443                             GdkRectangle *page_area)
2444 {
2445         PangoLayout *layout;
2446         PangoFontDescription *font_desc;
2447         gchar *markup;
2448         const gchar *text = _("End of presentation. Press Escape to exit.");
2449
2450         if (view->presentation_state != EV_PRESENTATION_END)
2451                 return;
2452
2453         layout = gtk_widget_create_pango_layout (GTK_WIDGET (view), NULL);
2454         markup = g_strdup_printf ("<span foreground=\"white\">%s</span>", text);
2455         pango_layout_set_markup (layout, markup, -1);
2456         g_free (markup);
2457
2458         font_desc = pango_font_description_new ();
2459         pango_font_description_set_size (font_desc, 16 * PANGO_SCALE);
2460         pango_layout_set_font_description (layout, font_desc);
2461
2462         gtk_paint_layout (GTK_WIDGET (view)->style,
2463                           view->layout.bin_window,
2464                           GTK_WIDGET_STATE (view),
2465                           FALSE,
2466                           page_area,
2467                           GTK_WIDGET (view),
2468                           NULL,
2469                           page_area->x + 15,
2470                           page_area->y + 15,
2471                           layout);
2472
2473         pango_font_description_free (font_desc);
2474         g_object_unref (layout);
2475 }
2476
2477 static gboolean
2478 ev_view_expose_event (GtkWidget      *widget,
2479                       GdkEventExpose *event)
2480 {
2481         EvView  *view = EV_VIEW (widget);
2482         cairo_t *cr;
2483         gint     i;
2484
2485         if (view->animation) {
2486                 GdkRectangle page_area;
2487                 GtkBorder    border;
2488
2489                 if (get_page_extents (view, view->current_page, &page_area, &border)) {
2490                         cr = gdk_cairo_create (view->layout.bin_window);
2491
2492                         /* normalize to x=0, y=0 */
2493                         cairo_translate (cr, page_area.x, page_area.y);
2494                         page_area.x = page_area.y = 0;
2495
2496                         ev_transition_animation_paint (view->animation, cr, page_area);
2497                         cairo_destroy (cr);
2498                 }
2499
2500                 return TRUE;
2501         }
2502
2503         if (view->presentation) {
2504                 switch (view->presentation_state) {
2505                         case EV_PRESENTATION_END: {
2506                                 GdkRectangle area = {0};
2507
2508                                 area.width = widget->allocation.width;
2509                                 area.height = widget->allocation.height;
2510
2511                                 draw_end_presentation_page (view, &area);
2512                         }
2513                                 return FALSE;
2514                         case EV_PRESENTATION_BLACK:
2515                         case EV_PRESENTATION_WHITE:
2516                                 return FALSE;
2517                         case EV_PRESENTATION_NORMAL:
2518                         default:
2519                                 break;
2520                 }
2521         } else if (view->loading) {
2522                 GdkRectangle area = {0};
2523
2524                 area.width = widget->allocation.width;
2525                 area.height = widget->allocation.height;
2526
2527                 draw_loading_text (view,
2528                                    &area,
2529                                    &(event->area));
2530         }
2531
2532         if (view->document == NULL)
2533                 return FALSE;
2534
2535         cr = gdk_cairo_create (view->layout.bin_window);
2536
2537         for (i = view->start_page; i <= view->end_page; i++) {
2538                 GdkRectangle page_area;
2539                 GtkBorder border;
2540                 gboolean page_ready = TRUE;
2541
2542                 if (!get_page_extents (view, i, &page_area, &border))
2543                         continue;
2544
2545                 page_area.x -= view->scroll_x;
2546                 page_area.y -= view->scroll_y;
2547
2548                 draw_one_page (view, i, cr, &page_area, &border, &(event->area), &page_ready);
2549
2550                 if (page_ready && EV_IS_DOCUMENT_FIND (view->document) && view->highlight_find_results)
2551                         highlight_find_results (view, i);
2552         }
2553
2554         cairo_destroy (cr);
2555
2556         if (GTK_WIDGET_CLASS (ev_view_parent_class)->expose_event)
2557                 (* GTK_WIDGET_CLASS (ev_view_parent_class)->expose_event) (widget, event);
2558
2559         return FALSE;
2560 }
2561
2562 static gboolean
2563 ev_view_do_popup_menu (EvView *view,
2564                        gdouble x,
2565                        gdouble y)
2566 {
2567         EvLink  *link;
2568         EvImage *image;
2569
2570         image = ev_view_get_image_at_location (view, x, y);
2571         if (image) {
2572                 g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, image);
2573                 return TRUE;
2574         }
2575
2576         link = ev_view_get_link_at_location (view, x, y);
2577         if (link) {
2578                 g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, link);
2579                 return TRUE;
2580         }
2581
2582         g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, NULL);
2583
2584         return TRUE;
2585 }
2586
2587 static gboolean
2588 ev_view_popup_menu (GtkWidget *widget)
2589 {
2590         gint x, y;
2591
2592         gtk_widget_get_pointer (widget, &x, &y);
2593         return ev_view_do_popup_menu (EV_VIEW (widget), x, y);
2594 }
2595
2596 #if GTK_CHECK_VERSION (2, 11, 7)
2597 static void
2598 get_link_area (EvView       *view,
2599                gint          x,
2600                gint          y,
2601                EvLink       *link,
2602                GdkRectangle *area)
2603 {
2604         EvRectangle  ev_rect;
2605         GList       *link_mapping;
2606         gint         page;
2607         gint         x_offset = 0, y_offset = 0;
2608
2609         x += view->scroll_x;
2610         y += view->scroll_y;
2611
2612         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
2613
2614         link_mapping = ev_pixbuf_cache_get_link_mapping (view->pixbuf_cache, page);
2615         ev_link_mapping_get_area (link_mapping, link, &ev_rect);
2616
2617         doc_rect_to_view_rect (view, page, &ev_rect, area);
2618         area->y -= view->scroll_y ;
2619 }
2620
2621 static gboolean
2622 ev_view_query_tooltip (GtkWidget         *widget,
2623                        gint               x,
2624                        gint               y,
2625                        gboolean           keyboard_tip,
2626                        GtkTooltip        *tooltip)
2627 {
2628         EvView *view = EV_VIEW (widget);
2629         EvLink *link;
2630         gchar  *text;
2631
2632         link = ev_view_get_link_at_location (view, x, y);
2633         if (!link)
2634                 return FALSE;
2635
2636         text = tip_from_link (view, link);
2637         if (text && g_utf8_validate (text, -1, NULL)) {
2638                 GdkRectangle link_area;
2639
2640                 get_link_area (view, x, y, link, &link_area);
2641                 gtk_tooltip_set_text (tooltip, text);
2642                 gtk_tooltip_set_tip_area (tooltip, &link_area);
2643         }
2644         g_free (text);
2645
2646         return TRUE;
2647 }
2648 #endif /* GTK_CHECK_VERSION (2, 11, 7) */
2649
2650 static void
2651 start_selection_for_event (EvView         *view,
2652                            GdkEventButton *event)
2653 {
2654         EvSelectionStyle style;
2655
2656         clear_selection (view);
2657
2658         view->selection_info.start.x = event->x + view->scroll_x;
2659         view->selection_info.start.y = event->y + view->scroll_y;
2660
2661         switch (event->type) {
2662                 case GDK_2BUTTON_PRESS:
2663                         style = EV_SELECTION_STYLE_WORD;
2664                         break;
2665                 case GDK_3BUTTON_PRESS:
2666                         style = EV_SELECTION_STYLE_LINE;
2667                         break;
2668                 default:
2669                         style = EV_SELECTION_STYLE_GLYPH;
2670                         break;
2671         }
2672
2673         view->selection_info.style = style;
2674 }
2675
2676 static gboolean
2677 ev_view_button_press_event (GtkWidget      *widget,
2678                             GdkEventButton *event)
2679 {
2680         EvView *view = EV_VIEW (widget);
2681
2682         if (!view->document)
2683                 return FALSE;
2684
2685         if (!GTK_WIDGET_HAS_FOCUS (widget)) {
2686                 gtk_widget_grab_focus (widget);
2687         }
2688
2689         view->pressed_button = event->button;
2690         view->selection_info.in_drag = FALSE;
2691
2692         if (view->scroll_info.autoscrolling)
2693                 return TRUE;
2694
2695         switch (event->button) {
2696                 case 1: {
2697                         EvImage *image;
2698                         EvFormField *field;
2699
2700                         if (EV_IS_SELECTION (view->document) && view->selection_info.selections) {
2701                                 if (event->type == GDK_3BUTTON_PRESS) {
2702                                         start_selection_for_event (view, event);
2703                                 } else if (location_in_selected_text (view,
2704                                                                event->x + view->scroll_x,
2705                                                                event->y + view->scroll_y)) {
2706                                         view->selection_info.in_drag = TRUE;
2707                                 } else {
2708                                         start_selection_for_event (view, event);
2709                                 }
2710
2711                                 gtk_widget_queue_draw (widget);
2712                         } else if ((field = ev_view_get_form_field_at_location (view, event->x, event->y))) {
2713                                 ev_view_remove_all (view);
2714                                 ev_view_handle_form_field (view, field, event->x, event->y);
2715                         } else if (!location_in_text (view, event->x + view->scroll_x, event->y + view->scroll_y) &&
2716                                    (image = ev_view_get_image_at_location (view, event->x, event->y))) {
2717                                 if (view->image_dnd_info.image)
2718                                         g_object_unref (view->image_dnd_info.image);
2719                                 view->image_dnd_info.image = g_object_ref (image);
2720                                 view->image_dnd_info.in_drag = TRUE;
2721
2722                                 view->image_dnd_info.start.x = event->x + view->scroll_x;
2723                                 view->image_dnd_info.start.y = event->y + view->scroll_y;
2724                         } else {
2725                                 ev_view_remove_all (view);
2726
2727                                 if (EV_IS_SELECTION (view->document))
2728                                         start_selection_for_event (view, event);
2729                         }
2730                 }
2731                         return TRUE;
2732                 case 2:
2733                         /* use root coordinates as reference point because
2734                          * scrolling changes window relative coordinates */
2735                         view->drag_info.start.x = event->x_root;
2736                         view->drag_info.start.y = event->y_root;
2737                         view->drag_info.hadj = gtk_adjustment_get_value (view->hadjustment);
2738                         view->drag_info.vadj = gtk_adjustment_get_value (view->vadjustment);
2739
2740                         ev_view_set_cursor (view, EV_VIEW_CURSOR_DRAG);
2741
2742                         return TRUE;
2743                 case 3:
2744                         view->scroll_info.start_y = event->y;
2745                         return ev_view_do_popup_menu (view, event->x, event->y);
2746         }
2747
2748         return FALSE;
2749 }
2750
2751 static void
2752 ev_view_remove_all (EvView *view)
2753 {
2754         GList *children, *child;
2755
2756         children = gtk_container_get_children (GTK_CONTAINER (view));
2757         for (child = children; child && child->data; child = g_list_next (child)) {
2758                 gtk_container_remove (GTK_CONTAINER (view),
2759                                       GTK_WIDGET (child->data));
2760         }
2761         g_list_free (children);
2762 }
2763
2764 /*** Drag and Drop ***/
2765 static void
2766 ev_view_drag_data_get (GtkWidget        *widget,
2767                        GdkDragContext   *context,
2768                        GtkSelectionData *selection_data,
2769                        guint             info,
2770                        guint             time)
2771 {
2772         EvView *view = EV_VIEW (widget);
2773
2774         switch (info) {
2775                 case TARGET_DND_TEXT:
2776                         if (EV_IS_SELECTION (view->document) &&
2777                             view->selection_info.selections) {
2778                                 gchar *text;
2779
2780                                 text = get_selected_text (view);
2781                                 gtk_selection_data_set_text (selection_data,
2782                                                              text,
2783                                                              strlen (text));
2784                                 g_free (text);
2785                         }
2786                         break;
2787                 case TARGET_DND_IMAGE:
2788                         if (view->image_dnd_info.image) {
2789                                 GdkPixbuf *pixbuf;
2790
2791                                 ev_document_doc_mutex_lock ();
2792                                 pixbuf = ev_document_images_get_image (EV_DOCUMENT_IMAGES (view->document),
2793                                                                        view->image_dnd_info.image);
2794                                 ev_document_doc_mutex_unlock ();
2795
2796                                 gtk_selection_data_set_pixbuf (selection_data, pixbuf);
2797                                 g_object_unref (pixbuf);
2798                         }
2799                         break;
2800                 case TARGET_DND_URI:
2801                         if (view->image_dnd_info.image) {
2802                                 GdkPixbuf   *pixbuf;
2803                                 const gchar *tmp_uri;
2804                                 gchar      **uris;
2805
2806                                 ev_document_doc_mutex_lock ();
2807                                 pixbuf = ev_document_images_get_image (EV_DOCUMENT_IMAGES (view->document),
2808                                                                        view->image_dnd_info.image);
2809                                 ev_document_doc_mutex_unlock ();
2810
2811                                 tmp_uri = ev_image_save_tmp (view->image_dnd_info.image, pixbuf);
2812                                 g_object_unref (pixbuf);
2813
2814                                 uris = g_new0 (gchar *, 2);
2815                                 uris[0] = (gchar *)tmp_uri;
2816
2817                                 gtk_selection_data_set_uris (selection_data, uris);
2818
2819                                 /* g_free instead of g_strfreev since tmp_uri is const */
2820                                 g_free (uris);
2821                         }
2822         }
2823 }
2824
2825 static gboolean
2826 ev_view_drag_motion (GtkWidget      *widget,
2827                      GdkDragContext *context,
2828                      gint            x,
2829                      gint            y,
2830                      guint           time)
2831 {
2832         if (gtk_drag_get_source_widget (context) == widget)
2833                 gdk_drag_status (context, 0, time);
2834         else
2835                 gdk_drag_status (context, context->suggested_action, time);
2836
2837         return TRUE;
2838 }
2839
2840 static void
2841 ev_view_drag_data_received (GtkWidget          *widget,
2842                             GdkDragContext     *context,
2843                             gint                x,
2844                             gint                y,
2845                             GtkSelectionData   *selection_data,
2846                             guint               info,
2847                             guint               time)
2848 {
2849         gchar  **uris;
2850         gint     i = 0;
2851         GSList  *uri_list = NULL;
2852
2853         uris = gtk_selection_data_get_uris (selection_data);
2854         if (!uris) {
2855                 gtk_drag_finish (context, FALSE, FALSE, time);
2856                 return;
2857         }
2858
2859         for (i = 0; uris[i]; i++) {
2860                 uri_list = g_slist_prepend (uri_list, (gpointer) uris[i]);
2861         }
2862
2863         ev_application_open_uri_list (EV_APP, uri_list,
2864                                       gtk_widget_get_screen (widget),
2865                                       0);
2866         gtk_drag_finish (context, TRUE, FALSE, time);
2867
2868         g_strfreev (uris);
2869         g_slist_free (uri_list);
2870 }
2871
2872
2873 static gboolean
2874 selection_update_idle_cb (EvView *view)
2875 {
2876         compute_selections (view,
2877                             view->selection_info.style,
2878                             &view->selection_info.start,
2879                             &view->motion);
2880         view->selection_update_id = 0;
2881         return FALSE;
2882 }
2883
2884 static gboolean
2885 selection_scroll_timeout_cb (EvView *view)
2886 {
2887         gint x, y, shift = 0;
2888         GtkWidget *widget = GTK_WIDGET (view);
2889
2890         gtk_widget_get_pointer (widget, &x, &y);
2891
2892         if (y > widget->allocation.height) {
2893                 shift = (y - widget->allocation.height) / 2;
2894         } else if (y < 0) {
2895                 shift = y / 2;
2896         }
2897
2898         if (shift)
2899                 gtk_adjustment_set_value (view->vadjustment,
2900                                           CLAMP (view->vadjustment->value + shift,
2901                                           view->vadjustment->lower,
2902                                           view->vadjustment->upper -
2903                                           view->vadjustment->page_size));
2904
2905         if (x > widget->allocation.width) {
2906                 shift = (x - widget->allocation.width) / 2;
2907         } else if (x < 0) {
2908                 shift = x / 2;
2909         }
2910
2911         if (shift)
2912                 gtk_adjustment_set_value (view->hadjustment,
2913                                           CLAMP (view->hadjustment->value + shift,
2914                                           view->hadjustment->lower,
2915                                           view->hadjustment->upper -
2916                                           view->hadjustment->page_size));
2917
2918         return TRUE;
2919 }
2920
2921 static gboolean
2922 ev_view_drag_update_momentum (EvView *view)
2923 {
2924         int i;
2925         if (!view->drag_info.in_drag)
2926                 return FALSE;
2927
2928         for (i = DRAG_HISTORY - 1; i > 0; i--) {
2929                 view->drag_info.buffer[i].x = view->drag_info.buffer[i-1].x;
2930                 view->drag_info.buffer[i].y = view->drag_info.buffer[i-1].y;
2931         }
2932
2933         /* Momentum is a moving average of 10ms granularity over
2934          * the last 100ms with each 10ms stored in buffer.
2935          */
2936
2937         view->drag_info.momentum.x = (view->drag_info.buffer[DRAG_HISTORY - 1].x - view->drag_info.buffer[0].x);
2938         view->drag_info.momentum.y = (view->drag_info.buffer[DRAG_HISTORY - 1].y - view->drag_info.buffer[0].y);
2939
2940         return TRUE;
2941 }
2942
2943 static gboolean
2944 ev_view_scroll_drag_release (EvView *view)
2945 {
2946         gdouble dhadj_value, dvadj_value;
2947         gdouble oldhadjustment, oldvadjustment;
2948
2949         view->drag_info.momentum.x /= 1.2;
2950         view->drag_info.momentum.y /= 1.2; /* Alter these constants to change "friction" */
2951
2952         dhadj_value = view->hadjustment->page_size *
2953                       (gdouble)view->drag_info.momentum.x / GTK_WIDGET (view)->allocation.width;
2954         dvadj_value = view->vadjustment->page_size *
2955                       (gdouble)view->drag_info.momentum.y / GTK_WIDGET (view)->allocation.height;
2956
2957         oldhadjustment = gtk_adjustment_get_value (view->hadjustment);
2958         oldvadjustment = gtk_adjustment_get_value (view->vadjustment);
2959
2960         if (((oldhadjustment + dhadj_value) > (view->hadjustment->upper - view->hadjustment->page_size)) ||
2961            ((oldhadjustment + dhadj_value) < 0))
2962                 view->drag_info.momentum.x *= -0.5; /* 0.5 rather than 1 means the edges absorb some momentum */
2963         if (((oldvadjustment + dvadj_value) > (view->vadjustment->upper - view->vadjustment->page_size)) ||
2964            ((oldvadjustment + dvadj_value) < 0))
2965                 view->drag_info.momentum.y *= -0.5;
2966
2967         gtk_adjustment_set_value (view->hadjustment,
2968                                 MIN (oldhadjustment + dhadj_value,
2969                                 view->hadjustment->upper - view->hadjustment->page_size));
2970         gtk_adjustment_set_value (view->vadjustment,
2971                                 MIN (oldvadjustment + dvadj_value,
2972                                 view->vadjustment->upper - view->vadjustment->page_size));
2973
2974         if (((view->drag_info.momentum.x < 1) && (view->drag_info.momentum.x > -1)) &&
2975            ((view->drag_info.momentum.y < 1) && (view->drag_info.momentum.y > -1)))
2976                 return FALSE;
2977         else
2978                 return TRUE;
2979 }
2980
2981 static gboolean
2982 ev_view_motion_notify_event (GtkWidget      *widget,
2983                              GdkEventMotion *event)
2984 {
2985         EvView *view = EV_VIEW (widget);
2986         gint x, y;
2987
2988         if (!view->document)
2989                 return FALSE;
2990
2991
2992         if (event->is_hint || event->window != view->layout.bin_window) {
2993             gtk_widget_get_pointer (widget, &x, &y);
2994         } else {
2995             x = event->x;
2996             y = event->y;
2997         }
2998
2999         if (view->scroll_info.autoscrolling) {
3000                 view->scroll_info.last_y = y;
3001                 return TRUE;
3002         }
3003
3004         if (view->selection_info.in_drag) {
3005                 if (gtk_drag_check_threshold (widget,
3006                                               view->selection_info.start.x,
3007                                               view->selection_info.start.y,
3008                                               x, y)) {
3009                         GtkTargetList *target_list = gtk_target_list_new (NULL, 0);
3010
3011                         gtk_target_list_add_text_targets (target_list, TARGET_DND_TEXT);
3012
3013                         gtk_drag_begin (widget, target_list,
3014                                         GDK_ACTION_COPY,
3015                                         1, (GdkEvent *)event);
3016
3017                         view->selection_info.in_drag = FALSE;
3018
3019                         gtk_target_list_unref (target_list);
3020
3021                         return TRUE;
3022                 }
3023         } else if (view->image_dnd_info.in_drag) {
3024                 if (gtk_drag_check_threshold (widget,
3025                                               view->selection_info.start.x,
3026                                               view->selection_info.start.y,
3027                                               x, y)) {
3028                         GtkTargetList *target_list = gtk_target_list_new (NULL, 0);
3029
3030                         gtk_target_list_add_uri_targets (target_list, TARGET_DND_URI);
3031                         gtk_target_list_add_image_targets (target_list, TARGET_DND_IMAGE, TRUE);
3032
3033                         gtk_drag_begin (widget, target_list,
3034                                         GDK_ACTION_COPY,
3035                                         1, (GdkEvent *)event);
3036
3037                         view->image_dnd_info.in_drag = FALSE;
3038
3039                         gtk_target_list_unref (target_list);
3040
3041                         return TRUE;
3042                 }
3043         }
3044
3045         /* For the Evince 0.4.x release, we limit selection to un-rotated
3046          * documents only.
3047          */
3048         if (view->pressed_button == 1 && view->rotation == 0) {
3049
3050                 /* Schedule timeout to scroll during selection and additionally
3051                  * scroll once to allow arbitrary speed. */
3052                 if (!view->selection_scroll_id)
3053                     view->selection_scroll_id = g_timeout_add (SCROLL_TIME, (GSourceFunc)selection_scroll_timeout_cb, view);
3054                 else
3055                     selection_scroll_timeout_cb (view);
3056
3057                 view->selection_info.in_selection = TRUE;
3058                 view->motion.x = x + view->scroll_x;
3059                 view->motion.y = y + view->scroll_y;
3060
3061                 /* Queue an idle to handle the motion.  We do this because
3062                  * handling any selection events in the motion could be slower
3063                  * than new motion events reach us.  We always put it in the
3064                  * idle to make sure we catch up and don't visibly lag the
3065                  * mouse. */
3066                 if (!view->selection_update_id)
3067                         view->selection_update_id = g_idle_add ((GSourceFunc)selection_update_idle_cb, view);
3068
3069                 return TRUE;
3070         } else if (view->pressed_button == 2) {
3071                 if (!view->drag_info.in_drag) {
3072                         gboolean start;
3073                         int i;
3074
3075                         start = gtk_drag_check_threshold (widget,
3076                                                           view->drag_info.start.x,
3077                                                           view->drag_info.start.y,
3078                                                           event->x_root,
3079                                                           event->y_root);
3080                         view->drag_info.in_drag = start;
3081                         view->drag_info.drag_timeout_id = g_timeout_add (10,
3082                                 (GSourceFunc)ev_view_drag_update_momentum, view);
3083                         /* Set 100 to choose how long it takes to build up momentum */
3084                         /* Clear out previous momentum info: */
3085                         for (i = 0; i < DRAG_HISTORY; i++) {
3086                                 view->drag_info.buffer[i].x = event->x;
3087                                 view->drag_info.buffer[i].y = event->y;
3088                         }
3089                         view->drag_info.momentum.x = 0;
3090                         view->drag_info.momentum.y = 0;
3091                 }
3092
3093                 if (view->drag_info.in_drag) {
3094                         int dx, dy;
3095                         gdouble dhadj_value, dvadj_value;
3096
3097                         view->drag_info.buffer[0].x = event->x;
3098                         view->drag_info.buffer[0].y = event->y;
3099
3100                         dx = event->x_root - view->drag_info.start.x;
3101                         dy = event->y_root - view->drag_info.start.y;
3102
3103                         dhadj_value = view->hadjustment->page_size *
3104                                       (gdouble)dx / widget->allocation.width;
3105                         dvadj_value = view->vadjustment->page_size *
3106                                       (gdouble)dy / widget->allocation.height;
3107
3108                         /* clamp scrolling to visible area */
3109                         gtk_adjustment_set_value (view->hadjustment,
3110                                                   MIN(view->drag_info.hadj - dhadj_value,
3111                                                       view->hadjustment->upper -
3112                                                       view->hadjustment->page_size));
3113                         gtk_adjustment_set_value (view->vadjustment,
3114                                                   MIN(view->drag_info.vadj - dvadj_value,
3115                                                       view->vadjustment->upper -
3116                                                       view->vadjustment->page_size));
3117
3118                         return TRUE;
3119                 }
3120         } else if (view->pressed_button <= 0) {
3121                 ev_view_handle_cursor_over_xy (view, x, y);
3122                 return TRUE;
3123         }
3124
3125         return FALSE;
3126 }
3127
3128 static gboolean
3129 ev_view_button_release_event (GtkWidget      *widget,
3130                               GdkEventButton *event)
3131 {
3132         EvView *view = EV_VIEW (widget);
3133         EvLink *link = NULL;
3134
3135         view->image_dnd_info.in_drag = FALSE;
3136
3137         if (view->scroll_info.autoscrolling) {
3138                 ev_view_autoscroll_stop (view);
3139                 view->pressed_button = -1;
3140
3141                 return TRUE;
3142         }
3143
3144         if (view->drag_info.in_drag) {
3145                 view->drag_info.release_timeout_id =
3146                         g_timeout_add (20,
3147                                        (GSourceFunc)ev_view_scroll_drag_release, view);
3148         }
3149
3150         if (view->document && !view->drag_info.in_drag && view->pressed_button != 3) {
3151                 link = ev_view_get_link_at_location (view, event->x, event->y);
3152         }
3153
3154         view->drag_info.in_drag = FALSE;
3155
3156         if (view->pressed_button == 2) {
3157                 ev_view_handle_cursor_over_xy (view, event->x, event->y);
3158         }
3159
3160         view->pressed_button = -1;
3161
3162         if (view->selection_scroll_id) {
3163             g_source_remove (view->selection_scroll_id);
3164             view->selection_scroll_id = 0;
3165         }
3166         if (view->selection_update_id) {
3167             g_source_remove (view->selection_update_id);
3168             view->selection_update_id = 0;
3169         }
3170
3171         if (!view->selection_info.in_selection &&
3172             view->selection_info.style != EV_SELECTION_STYLE_GLYPH) {
3173                 compute_selections (view,
3174                                     view->selection_info.style,
3175                                     &(view->selection_info.start),
3176                                     &(view->selection_info.start));
3177         }
3178
3179         if (view->selection_info.selections) {
3180                 ev_view_update_primary_selection (view);
3181
3182                 if (view->selection_info.in_drag) {
3183                         clear_selection (view);
3184                         gtk_widget_queue_draw (widget);
3185                 }
3186
3187                 view->selection_info.in_drag = FALSE;
3188         } else if (link) {
3189                 if (event->button == 2) {
3190                         EvLinkAction    *action;
3191                         EvLinkActionType type;
3192
3193                         action = ev_link_get_action (link);
3194                         if (!action)
3195                                 return FALSE;
3196
3197                         type = ev_link_action_get_action_type (action);
3198                         if (type == EV_LINK_ACTION_TYPE_GOTO_DEST) {
3199                                 g_signal_emit (view,
3200                                                signals[SIGNAL_EXTERNAL_LINK],
3201                                                0, action);
3202                         }
3203                 } else {
3204                         ev_view_handle_link (view, link);
3205                 }
3206         } else if (view->presentation) {
3207                 switch (event->button) {
3208                         case 1:
3209                                 ev_view_next_page (view);
3210                                 return TRUE;
3211                         case 3:
3212                                 ev_view_previous_page (view);
3213                                 return TRUE;
3214                 }
3215         }
3216
3217         return FALSE;
3218 }
3219
3220 /* Goto Window */
3221 /* Cut and paste from gtkwindow.c */
3222 static void
3223 send_focus_change (GtkWidget *widget,
3224                    gboolean   in)
3225 {
3226         GdkEvent *fevent = gdk_event_new (GDK_FOCUS_CHANGE);
3227
3228         g_object_ref (widget);
3229
3230         if (in)
3231                 GTK_WIDGET_SET_FLAGS (widget, GTK_HAS_FOCUS);
3232         else
3233                 GTK_WIDGET_UNSET_FLAGS (widget, GTK_HAS_FOCUS);
3234
3235         fevent->focus_change.type = GDK_FOCUS_CHANGE;
3236         fevent->focus_change.window = g_object_ref (widget->window);
3237         fevent->focus_change.in = in;
3238
3239         gtk_widget_event (widget, fevent);
3240
3241         g_object_notify (G_OBJECT (widget), "has-focus");
3242
3243         g_object_unref (widget);
3244         gdk_event_free (fevent);
3245 }
3246
3247 static void
3248 ev_view_goto_window_hide (EvView *view)
3249 {
3250         /* send focus-in event */
3251         send_focus_change (view->goto_entry, FALSE);
3252         gtk_widget_hide (view->goto_window);
3253         gtk_entry_set_text (GTK_ENTRY (view->goto_entry), "");
3254 }
3255
3256 static gboolean
3257 ev_view_goto_window_delete_event (GtkWidget   *widget,
3258                                   GdkEventAny *event,
3259                                   EvView      *view)
3260 {
3261         ev_view_goto_window_hide (view);
3262
3263         return TRUE;
3264 }
3265
3266 static gboolean
3267 key_is_numeric (guint keyval)
3268 {
3269         return ((keyval >= GDK_0 && keyval <= GDK_9) ||
3270                 (keyval >= GDK_KP_0 && keyval <= GDK_KP_9));
3271 }
3272
3273 static gboolean
3274 ev_view_goto_window_key_press_event (GtkWidget   *widget,
3275                                      GdkEventKey *event,
3276                                      EvView      *view)
3277 {
3278         switch (event->keyval) {
3279                 case GDK_Escape:
3280                 case GDK_Tab:
3281                 case GDK_KP_Tab:
3282                 case GDK_ISO_Left_Tab:
3283                         ev_view_goto_window_hide (view);
3284                         return TRUE;
3285                 case GDK_Return:
3286                 case GDK_KP_Enter:
3287                 case GDK_ISO_Enter:
3288                 case GDK_BackSpace:
3289                 case GDK_Delete:
3290                         return FALSE;
3291                 default:
3292                         if (!key_is_numeric (event->keyval))
3293                                 return TRUE;
3294         }
3295
3296         return FALSE;
3297 }
3298
3299 static gboolean
3300 ev_view_goto_window_button_press_event (GtkWidget      *widget,
3301                                         GdkEventButton *event,
3302                                         EvView         *view)
3303 {
3304         ev_view_goto_window_hide (view);
3305
3306         return TRUE;
3307 }
3308
3309 static void
3310 ev_view_goto_entry_activate (GtkEntry *entry,
3311                              EvView   *view)
3312 {
3313         const gchar *text;
3314         gint         page;
3315
3316         text = gtk_entry_get_text (entry);
3317         page = atoi (text) - 1;
3318
3319         ev_view_goto_window_hide (view);
3320
3321         if (page >= 0 &&
3322             page < ev_page_cache_get_n_pages (view->page_cache))
3323                 ev_page_cache_set_current_page (view->page_cache, page);
3324 }
3325
3326 static void
3327 ev_view_goto_window_create (EvView *view)
3328 {
3329         GtkWidget *frame, *hbox, *toplevel, *label;
3330
3331         toplevel = gtk_widget_get_toplevel (GTK_WIDGET (view));
3332
3333         if (view->goto_window) {
3334                 if (GTK_WINDOW (toplevel)->group)
3335                         gtk_window_group_add_window (GTK_WINDOW (toplevel)->group,
3336                                                      GTK_WINDOW (view->goto_window));
3337                 else if (GTK_WINDOW (view->goto_window)->group)
3338                         gtk_window_group_remove_window (GTK_WINDOW (view->goto_window)->group,
3339                                                         GTK_WINDOW (view->goto_window));
3340                 return;
3341         }
3342
3343         view->goto_window = gtk_window_new (GTK_WINDOW_POPUP);
3344
3345         if (GTK_WINDOW (toplevel)->group)
3346                 gtk_window_group_add_window (GTK_WINDOW (toplevel)->group,
3347                                              GTK_WINDOW (view->goto_window));
3348
3349         gtk_window_set_modal (GTK_WINDOW (view->goto_window), TRUE);
3350
3351         g_signal_connect (view->goto_window, "delete_event",
3352                           G_CALLBACK (ev_view_goto_window_delete_event),
3353                           view);
3354         g_signal_connect (view->goto_window, "key_press_event",
3355                           G_CALLBACK (ev_view_goto_window_key_press_event),
3356                           view);
3357         g_signal_connect (view->goto_window, "button_press_event",
3358                           G_CALLBACK (ev_view_goto_window_button_press_event),
3359                           view);
3360
3361         frame = gtk_frame_new (NULL);
3362         gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_ETCHED_IN);
3363         gtk_container_add (GTK_CONTAINER (view->goto_window), frame);
3364         gtk_widget_show (frame);
3365
3366         hbox = gtk_hbox_new (FALSE, 0);
3367         gtk_container_set_border_width (GTK_CONTAINER (hbox), 3);
3368         gtk_container_add (GTK_CONTAINER (frame), hbox);
3369         gtk_widget_show (hbox);
3370
3371         label = gtk_label_new(_("Jump to page:"));
3372         gtk_box_pack_start (GTK_BOX (hbox), label, TRUE, TRUE, 3);
3373         gtk_widget_show (label);
3374         gtk_widget_realize (label);
3375
3376         view->goto_entry = gtk_entry_new ();
3377         g_signal_connect (view->goto_entry, "activate",
3378                           G_CALLBACK (ev_view_goto_entry_activate),
3379                           view);
3380         gtk_box_pack_start_defaults (GTK_BOX (hbox), view->goto_entry);
3381         gtk_widget_show (view->goto_entry);
3382         gtk_widget_realize (view->goto_entry);
3383 }
3384
3385 static void
3386 ev_view_goto_entry_grab_focus (EvView *view)
3387 {
3388         GtkWidgetClass *entry_parent_class;
3389
3390         entry_parent_class = g_type_class_peek_parent (GTK_ENTRY_GET_CLASS (view->goto_entry));
3391         (entry_parent_class->grab_focus) (view->goto_entry);
3392
3393         send_focus_change (view->goto_entry, TRUE);
3394 }
3395
3396 static void
3397 ev_view_goto_window_send_key_event (EvView   *view,
3398                                     GdkEvent *event)
3399 {
3400         GdkEventKey *new_event;
3401         GdkScreen   *screen;
3402
3403         /* Move goto window off screen */
3404         screen = gtk_widget_get_screen (GTK_WIDGET (view));
3405         gtk_window_move (GTK_WINDOW (view->goto_window),
3406                          gdk_screen_get_width (screen) + 1,
3407                          gdk_screen_get_height (screen) + 1);
3408         gtk_widget_show (view->goto_window);
3409
3410         new_event = (GdkEventKey *) gdk_event_copy (event);
3411         g_object_unref (new_event->window);
3412         new_event->window = g_object_ref (view->goto_window->window);
3413         gtk_widget_realize (view->goto_window);
3414
3415         gtk_widget_event (view->goto_window, (GdkEvent *)new_event);
3416         gdk_event_free ((GdkEvent *)new_event);
3417         gtk_widget_hide (view->goto_window);
3418 }
3419
3420 static gboolean
3421 ev_view_key_press_event (GtkWidget   *widget,
3422                          GdkEventKey *event)
3423 {
3424         EvView *view = EV_VIEW (widget);
3425         EvPresentationState current;
3426
3427         if (!view->document)
3428                 return FALSE;
3429
3430         if (!view->presentation ||
3431             view->presentation_state == EV_PRESENTATION_END)
3432                 return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
3433
3434
3435         current = view->presentation_state;
3436
3437         switch (event->keyval) {
3438                 case GDK_b:
3439                 case GDK_B:
3440                         view->presentation_state =
3441                                 (view->presentation_state == EV_PRESENTATION_BLACK) ?
3442                                 EV_PRESENTATION_NORMAL : EV_PRESENTATION_BLACK;
3443                         break;
3444                 case GDK_w:
3445                 case GDK_W:
3446                         view->presentation_state =
3447                                 (view->presentation_state == EV_PRESENTATION_WHITE) ?
3448                                 EV_PRESENTATION_NORMAL : EV_PRESENTATION_WHITE;
3449                         break;
3450                 default:
3451                         if (view->presentation_state == EV_PRESENTATION_BLACK ||
3452                             view->presentation_state == EV_PRESENTATION_WHITE) {
3453                                 view->presentation_state = EV_PRESENTATION_NORMAL;
3454                         }
3455         }
3456
3457         if (current == view->presentation_state) {
3458                 if (ev_page_cache_get_n_pages (view->page_cache) > 1 &&
3459                     key_is_numeric (event->keyval)) {
3460                         gint x, y;
3461
3462                         ev_view_goto_window_create (view);
3463                         ev_view_goto_window_send_key_event (view, (GdkEvent *)event);
3464                         gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
3465                         gtk_window_move (GTK_WINDOW (view->goto_window), x, y);
3466                         gtk_widget_show (view->goto_window);
3467                         ev_view_goto_entry_grab_focus (view);
3468
3469                         return TRUE;
3470                 }
3471
3472                 return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
3473         }
3474
3475         switch (view->presentation_state) {
3476                 case EV_PRESENTATION_NORMAL:
3477                 case EV_PRESENTATION_BLACK:
3478                         gdk_window_set_background (view->layout.bin_window,
3479                                                    &widget->style->black);
3480                         break;
3481                 case EV_PRESENTATION_WHITE:
3482                         gdk_window_set_background (view->layout.bin_window,
3483                                                    &widget->style->white);
3484                         break;
3485                 default:
3486                         return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
3487         }
3488
3489         gtk_widget_queue_draw (widget);
3490         return TRUE;
3491 }
3492
3493 static gint
3494 ev_view_focus_in (GtkWidget     *widget,
3495                   GdkEventFocus *event)
3496 {
3497         if (EV_VIEW (widget)->pixbuf_cache)
3498                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
3499         gtk_widget_queue_draw (widget);
3500
3501         return FALSE;
3502 }
3503
3504 static gint
3505 ev_view_focus_out (GtkWidget     *widget,
3506                      GdkEventFocus *event)
3507 {
3508         if (EV_VIEW (widget)->goto_window)
3509                 ev_view_goto_window_hide (EV_VIEW (widget));
3510
3511         if (EV_VIEW (widget)->pixbuf_cache)
3512                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
3513         gtk_widget_queue_draw (widget);
3514
3515         return FALSE;
3516 }
3517
3518 static gboolean
3519 ev_view_leave_notify_event (GtkWidget *widget, GdkEventCrossing   *event)
3520 {
3521         EvView *view = EV_VIEW (widget);
3522
3523         if (view->cursor != EV_VIEW_CURSOR_NORMAL)
3524                 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
3525
3526 #if !GTK_CHECK_VERSION (2, 11, 7)
3527         if (view->link_tooltip) {
3528                 view->hovered_link = NULL;
3529                 ev_tooltip_deactivate (EV_TOOLTIP (view->link_tooltip));
3530         }
3531 #endif
3532
3533         return FALSE;
3534 }
3535
3536 static gboolean
3537 ev_view_enter_notify_event (GtkWidget *widget, GdkEventCrossing   *event)
3538 {
3539         EvView *view = EV_VIEW (widget);
3540
3541         ev_view_handle_cursor_over_xy (view, event->x, event->y);
3542
3543         return FALSE;
3544 }
3545
3546 static void
3547 ev_view_style_set (GtkWidget *widget,
3548                    GtkStyle  *old_style)
3549 {
3550         if (EV_VIEW (widget)->pixbuf_cache)
3551                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
3552
3553         GTK_WIDGET_CLASS (ev_view_parent_class)->style_set (widget, old_style);
3554 }
3555
3556 /*** Drawing ***/
3557
3558 static guint32
3559 ev_gdk_color_to_rgb (const GdkColor *color)
3560 {
3561   guint32 result;
3562   result = (0xff0000 | (color->red & 0xff00));
3563   result <<= 8;
3564   result |= ((color->green & 0xff00) | (color->blue >> 8));
3565   return result;
3566 }
3567
3568 static void
3569 draw_rubberband (GtkWidget *widget, GdkWindow *window,
3570                  const GdkRectangle *rect, guchar alpha)
3571 {
3572         GdkGC *gc;
3573         GdkPixbuf *pixbuf;
3574         GdkColor *fill_color_gdk;
3575         guint fill_color;
3576
3577         fill_color_gdk = gdk_color_copy (&GTK_WIDGET (widget)->style->base[GTK_STATE_SELECTED]);
3578         fill_color = ev_gdk_color_to_rgb (fill_color_gdk) << 8 | alpha;
3579
3580         pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE, 8,
3581                                  rect->width, rect->height);
3582         gdk_pixbuf_fill (pixbuf, fill_color);
3583
3584         gdk_draw_pixbuf (window, NULL, pixbuf,
3585                          0, 0,
3586                          rect->x - EV_VIEW (widget)->scroll_x, rect->y - EV_VIEW (widget)->scroll_y,
3587                          rect->width, rect->height,
3588                          GDK_RGB_DITHER_NONE,
3589                          0, 0);
3590
3591         g_object_unref (pixbuf);
3592
3593         gc = gdk_gc_new (window);
3594         gdk_gc_set_rgb_fg_color (gc, fill_color_gdk);
3595         gdk_draw_rectangle (window, gc, FALSE,
3596                             rect->x - EV_VIEW (widget)->scroll_x, rect->y - EV_VIEW (widget)->scroll_y,
3597                             rect->width - 1,
3598                             rect->height - 1);
3599         g_object_unref (gc);
3600
3601         gdk_color_free (fill_color_gdk);
3602 }
3603
3604
3605 static void
3606 highlight_find_results (EvView *view, int page)
3607 {
3608         EvDocumentFind *find;
3609         int i, results = 0;
3610
3611         find = EV_DOCUMENT_FIND (view->document);
3612
3613         results = ev_document_find_get_n_results (find, page);
3614
3615         for (i = 0; i < results; i++) {
3616                 EvRectangle rectangle;
3617                 GdkRectangle view_rectangle;
3618                 guchar alpha;
3619
3620                 if (i == view->find_result && page == view->current_page) {
3621                         alpha = 0x90;
3622                 } else {
3623                         alpha = 0x20;
3624                 }
3625
3626                 ev_document_find_get_result (find, page, i, &rectangle);
3627                 doc_rect_to_view_rect (view, page, &rectangle, &view_rectangle);
3628                 draw_rubberband (GTK_WIDGET (view), view->layout.bin_window,
3629                                  &view_rectangle, alpha);
3630         }
3631 }
3632
3633 static void
3634 draw_loading_text (EvView       *view,
3635                    GdkRectangle *page_area,
3636                    GdkRectangle *expose_area)
3637 {
3638         cairo_t *cr;
3639         gint     width, height;
3640
3641         if (!view->loading_text) {
3642                 const gchar *loading_text = _("Loading...");
3643                 PangoLayout *layout;
3644                 PangoFontDescription *font_desc;
3645                 PangoRectangle logical_rect;
3646                 gint target_width;
3647                 gdouble real_scale;
3648
3649                 ev_document_fc_mutex_lock ();
3650
3651                 layout = gtk_widget_create_pango_layout (GTK_WIDGET (view), loading_text);
3652
3653                 font_desc = pango_font_description_new ();
3654
3655                 /* We set the font to be 10 points, get the size, and scale appropriately */
3656                 pango_font_description_set_size (font_desc, 10 * PANGO_SCALE);
3657                 pango_layout_set_font_description (layout, font_desc);
3658                 pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
3659
3660                 target_width = MAX (page_area->width / 2, 1);
3661                 real_scale = ((double)target_width / (double) logical_rect.width) * (PANGO_SCALE * 10);
3662                 pango_font_description_set_size (font_desc, (int)real_scale);
3663                 pango_layout_set_font_description (layout, font_desc);
3664                 pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
3665
3666                 view->loading_text = cairo_image_surface_create (CAIRO_FORMAT_ARGB32,
3667                                                                  logical_rect.width,
3668                                                                  logical_rect.height);
3669                 cr = cairo_create (view->loading_text);
3670                 cairo_set_source_rgb (cr,
3671                                       155 / (double)255,
3672                                       155 / (double)255,
3673                                       155 / (double)255);
3674                 pango_cairo_show_layout (cr, layout);
3675                 cairo_destroy (cr);
3676
3677                 pango_font_description_free (font_desc);
3678                 g_object_unref (layout);
3679
3680                 ev_document_fc_mutex_unlock ();
3681         }
3682
3683         width = (page_area->width - cairo_image_surface_get_width (view->loading_text)) / 2;
3684         height = (page_area->height - cairo_image_surface_get_height (view->loading_text)) / 2;
3685
3686         cr = gdk_cairo_create (view->layout.bin_window);
3687         cairo_translate (cr,
3688                          page_area->x + width,
3689                          page_area->y + height);
3690         cairo_set_source_surface (cr, view->loading_text, 0, 0);
3691         cairo_paint (cr);
3692         cairo_destroy (cr);
3693 }
3694
3695 static void
3696 draw_one_page (EvView       *view,
3697                gint          page,
3698                cairo_t      *cr,
3699                GdkRectangle *page_area,
3700                GtkBorder    *border,
3701                GdkRectangle *expose_area,
3702                gboolean     *page_ready)
3703 {
3704         GdkRectangle overlap;
3705         GdkRectangle real_page_area;
3706
3707         g_assert (view->document);
3708
3709         if (! gdk_rectangle_intersect (page_area, expose_area, &overlap))
3710                 return;
3711
3712         /* Render the document itself */
3713         real_page_area = *page_area;
3714
3715         real_page_area.x += border->left;
3716         real_page_area.y += border->top;
3717         real_page_area.width -= (border->left + border->right);
3718         real_page_area.height -= (border->top + border->bottom);
3719         *page_ready = TRUE;
3720
3721         if (!view->presentation) {
3722                 gint current_page;
3723
3724                 current_page = ev_page_cache_get_current_page (view->page_cache);
3725                 ev_document_misc_paint_one_page (view->layout.bin_window,
3726                                                  GTK_WIDGET (view),
3727                                                  page_area, border,
3728                                                  page == current_page);
3729         }
3730
3731         if (gdk_rectangle_intersect (&real_page_area, expose_area, &overlap)) {
3732                 gint             width, height;
3733                 gint             page_width, page_height;
3734                 cairo_surface_t *page_surface = NULL;
3735                 gint             selection_width, selection_height;
3736                 cairo_surface_t *selection_surface = NULL;
3737
3738                 page_surface = ev_pixbuf_cache_get_surface (view->pixbuf_cache, page);
3739
3740                 if (!page_surface) {
3741                         draw_loading_text (view,
3742                                            &real_page_area,
3743                                            expose_area);
3744                         *page_ready = FALSE;
3745
3746                         return;
3747                 }
3748
3749                 ev_page_cache_get_size (view->page_cache,
3750                                         page, view->rotation,
3751                                         view->scale,
3752                                         &width, &height);
3753
3754                 page_width = cairo_image_surface_get_width (page_surface);
3755                 page_height = cairo_image_surface_get_height (page_surface);
3756
3757                 cairo_save (cr);
3758                 cairo_translate (cr, overlap.x, overlap.y);
3759
3760                 if (width != page_width || height != page_height) {
3761                         cairo_pattern_set_filter (cairo_get_source (cr),
3762                                                   CAIRO_FILTER_FAST);
3763                         cairo_scale (cr,
3764                                      (gdouble)width / page_width,
3765                                      (gdouble)height / page_height);
3766                 }
3767
3768                 cairo_surface_set_device_offset (page_surface,
3769                                                  overlap.x - real_page_area.x,
3770                                                  overlap.y - real_page_area.y);
3771                 cairo_set_source_surface (cr, page_surface, 0, 0);
3772                 cairo_paint (cr);
3773                 cairo_restore (cr);
3774
3775                 /* Get the selection pixbuf iff we have something to draw */
3776                 if (find_selection_for_page (view, page) &&
3777                     view->selection_mode == EV_VIEW_SELECTION_TEXT) {
3778                         selection_surface =
3779                                 ev_pixbuf_cache_get_selection_surface (view->pixbuf_cache,
3780                                                                        page,
3781                                                                        view->scale,
3782                                                                        NULL);
3783                 }
3784
3785                 if (!selection_surface) {
3786                         return;
3787                 }
3788
3789                 selection_width = cairo_image_surface_get_width (selection_surface);
3790                 selection_height = cairo_image_surface_get_height (selection_surface);
3791
3792                 cairo_save (cr);
3793                 cairo_translate (cr, overlap.x, overlap.y);
3794
3795                 if (width != selection_width || height != selection_height) {
3796                         cairo_pattern_set_filter (cairo_get_source (cr),
3797                                                   CAIRO_FILTER_FAST);
3798                         cairo_scale (cr,
3799                                      (gdouble)width / selection_width,
3800                                      (gdouble)height / selection_height);
3801                 }
3802
3803                 cairo_surface_set_device_offset (selection_surface,
3804                                                  overlap.x - real_page_area.x,
3805                                                  overlap.y - real_page_area.y);
3806                 cairo_set_source_surface (cr, selection_surface, 0, 0);
3807                 cairo_paint (cr);
3808                 cairo_restore (cr);
3809         }
3810 }
3811
3812 /*** GObject functions ***/
3813
3814 static void
3815 ev_view_finalize (GObject *object)
3816 {
3817         EvView *view = EV_VIEW (object);
3818
3819         g_free (view->find_status);
3820
3821         clear_selection (view);
3822
3823         if (view->image_dnd_info.image)
3824                 g_object_unref (view->image_dnd_info.image);
3825         view->image_dnd_info.image = NULL;
3826
3827         G_OBJECT_CLASS (ev_view_parent_class)->finalize (object);
3828 }
3829
3830 static void
3831 ev_view_destroy (GtkObject *object)
3832 {
3833         EvView *view = EV_VIEW (object);
3834
3835         if (view->document) {
3836                 g_object_unref (view->document);
3837                 view->document = NULL;
3838         }
3839
3840         if (view->pixbuf_cache) {
3841                 g_object_unref (view->pixbuf_cache);
3842                 view->pixbuf_cache = NULL;
3843         }
3844
3845 #if !GTK_CHECK_VERSION (2, 11, 7)
3846         if (view->link_tooltip) {
3847                 gtk_widget_destroy (view->link_tooltip);
3848                 view->link_tooltip = NULL;
3849         }
3850 #endif
3851         if (view->goto_window) {
3852                 gtk_widget_destroy (view->goto_window);
3853                 view->goto_window = NULL;
3854                 view->goto_entry = NULL;
3855         }
3856
3857         if (view->selection_scroll_id) {
3858             g_source_remove (view->selection_scroll_id);
3859             view->selection_scroll_id = 0;
3860         }
3861
3862         if (view->selection_update_id) {
3863             g_source_remove (view->selection_update_id);
3864             view->selection_update_id = 0;
3865         }
3866
3867         if (view->loading_text) {
3868                 cairo_surface_destroy (view->loading_text);
3869                 view->loading_text = NULL;
3870         }
3871
3872         if (view->scroll_info.timeout_id) {
3873             g_source_remove (view->scroll_info.timeout_id);
3874             view->scroll_info.timeout_id = 0;
3875         }
3876
3877         if (view->drag_info.drag_timeout_id) {
3878                 g_source_remove (view->drag_info.drag_timeout_id);
3879                 view->drag_info.drag_timeout_id = 0;
3880         }
3881
3882         if (view->drag_info.release_timeout_id) {
3883                 g_source_remove (view->drag_info.release_timeout_id);
3884                 view->drag_info.release_timeout_id = 0;
3885         }
3886
3887         ev_view_presentation_transition_stop (view);
3888
3889         ev_view_set_scroll_adjustments (GTK_LAYOUT (view), NULL, NULL);
3890
3891         GTK_OBJECT_CLASS (ev_view_parent_class)->destroy (object);
3892 }
3893
3894 static void
3895 ev_view_set_property (GObject      *object,
3896                       guint         prop_id,
3897                       const GValue *value,
3898                       GParamSpec   *pspec)
3899 {
3900         EvView *view = EV_VIEW (object);
3901
3902         switch (prop_id) {
3903                 case PROP_CONTINUOUS:
3904                         ev_view_set_continuous (view, g_value_get_boolean (value));
3905                         break;
3906                 case PROP_DUAL_PAGE:
3907                         ev_view_set_dual_page (view, g_value_get_boolean (value));
3908                         break;
3909                 case PROP_FULLSCREEN:
3910                         ev_view_set_fullscreen (view, g_value_get_boolean (value));
3911                         break;
3912                 case PROP_PRESENTATION:
3913                         ev_view_set_presentation (view, g_value_get_boolean (value));
3914                         break;
3915                 case PROP_SIZING_MODE:
3916                         ev_view_set_sizing_mode (view, g_value_get_enum (value));
3917                         break;
3918                 case PROP_ZOOM:
3919                         ev_view_set_zoom (view, g_value_get_double (value), FALSE);
3920                         break;
3921                 case PROP_ROTATION:
3922                         ev_view_set_rotation (view, g_value_get_int (value));
3923                         break;
3924                 default:
3925                         G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
3926         }
3927 }
3928
3929 static AtkObject *
3930 ev_view_get_accessible (GtkWidget *widget)
3931 {
3932         static gboolean first_time = TRUE;
3933
3934         if (first_time) {
3935                 AtkObjectFactory *factory;
3936                 AtkRegistry *registry;
3937                 GType derived_type;
3938                 GType derived_atk_type;
3939
3940                 /*
3941                  * Figure out whether accessibility is enabled by looking at the
3942                  * type of the accessible object which would be created for
3943                  * the parent type of EvView.
3944                  */
3945                 derived_type = g_type_parent (EV_TYPE_VIEW);
3946
3947                 registry = atk_get_default_registry ();
3948                 factory = atk_registry_get_factory (registry,
3949                                                     derived_type);
3950                 derived_atk_type = atk_object_factory_get_accessible_type (factory);
3951                 if (g_type_is_a (derived_atk_type, GTK_TYPE_ACCESSIBLE))
3952                         atk_registry_set_factory_type (registry,
3953                                                        EV_TYPE_VIEW,
3954                                                        ev_view_accessible_factory_get_type ());
3955                 first_time = FALSE;
3956         }
3957         return GTK_WIDGET_CLASS (ev_view_parent_class)->get_accessible (widget);
3958 }
3959
3960 static void
3961 ev_view_get_property (GObject *object,
3962                       guint prop_id,
3963                       GValue *value,
3964                       GParamSpec *pspec)
3965 {
3966         EvView *view = EV_VIEW (object);
3967
3968         switch (prop_id) {
3969                 case PROP_FIND_STATUS:
3970                         g_value_set_string (value, view->find_status);
3971                         break;
3972                 case PROP_CONTINUOUS:
3973                         g_value_set_boolean (value, view->continuous);
3974                         break;
3975                 case PROP_DUAL_PAGE:
3976                         g_value_set_boolean (value, view->dual_page);
3977                         break;
3978                 case PROP_FULLSCREEN:
3979                         g_value_set_boolean (value, view->fullscreen);
3980                         break;
3981                 case PROP_PRESENTATION:
3982                         g_value_set_boolean (value, view->presentation);
3983                         break;
3984                 case PROP_SIZING_MODE:
3985                         g_value_set_enum (value, view->sizing_mode);
3986                         break;
3987                 case PROP_ZOOM:
3988                         g_value_set_double (value, view->scale);
3989                         break;
3990                 case PROP_ROTATION:
3991                         g_value_set_int (value, view->rotation);
3992                         break;
3993                 case PROP_HAS_SELECTION:
3994                         g_value_set_boolean (value,
3995                                              view->selection_info.selections != NULL);
3996                         break;
3997                 default:
3998                         G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
3999         }
4000 }
4001
4002 static void
4003 ev_view_class_init (EvViewClass *class)
4004 {
4005         GObjectClass *object_class = G_OBJECT_CLASS (class);
4006         GtkObjectClass *gtk_object_class = GTK_OBJECT_CLASS (class);
4007         GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
4008         GtkLayoutClass *layout_class = GTK_LAYOUT_CLASS (class);
4009         GtkBindingSet *binding_set;
4010
4011         object_class->finalize = ev_view_finalize;
4012         object_class->set_property = ev_view_set_property;
4013         object_class->get_property = ev_view_get_property;
4014
4015         widget_class->expose_event = ev_view_expose_event;
4016         widget_class->button_press_event = ev_view_button_press_event;
4017         widget_class->motion_notify_event = ev_view_motion_notify_event;
4018         widget_class->button_release_event = ev_view_button_release_event;
4019         widget_class->key_press_event = ev_view_key_press_event;
4020         widget_class->focus_in_event = ev_view_focus_in;
4021         widget_class->focus_out_event = ev_view_focus_out;
4022         widget_class->get_accessible = ev_view_get_accessible;
4023         widget_class->size_request = ev_view_size_request;
4024         widget_class->size_allocate = ev_view_size_allocate;
4025         widget_class->realize = ev_view_realize;
4026         widget_class->scroll_event = ev_view_scroll_event;
4027         widget_class->enter_notify_event = ev_view_enter_notify_event;
4028         widget_class->leave_notify_event = ev_view_leave_notify_event;
4029         widget_class->style_set = ev_view_style_set;
4030         widget_class->drag_data_get = ev_view_drag_data_get;
4031         widget_class->drag_motion = ev_view_drag_motion;
4032         widget_class->drag_data_received = ev_view_drag_data_received;
4033         widget_class->popup_menu = ev_view_popup_menu;
4034 #if GTK_CHECK_VERSION (2, 11, 7)
4035         widget_class->query_tooltip = ev_view_query_tooltip;
4036 #endif
4037
4038         gtk_object_class->destroy = ev_view_destroy;
4039
4040         layout_class->set_scroll_adjustments = ev_view_set_scroll_adjustments;
4041
4042         class->binding_activated = ev_view_scroll;
4043
4044         signals[SIGNAL_BINDING_ACTIVATED] = g_signal_new ("binding_activated",
4045                          G_TYPE_FROM_CLASS (object_class),
4046                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
4047                          G_STRUCT_OFFSET (EvViewClass, binding_activated),
4048                          NULL, NULL,
4049                          ev_marshal_VOID__ENUM_BOOLEAN,
4050                          G_TYPE_NONE, 2,
4051                          GTK_TYPE_SCROLL_TYPE,
4052                          G_TYPE_BOOLEAN);
4053
4054         signals[SIGNAL_ZOOM_INVALID] = g_signal_new ("zoom-invalid",
4055                          G_TYPE_FROM_CLASS (object_class),
4056                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
4057                          G_STRUCT_OFFSET (EvViewClass, zoom_invalid),
4058                          NULL, NULL,
4059                          ev_marshal_VOID__VOID,
4060                          G_TYPE_NONE, 0, G_TYPE_NONE);
4061         signals[SIGNAL_HANDLE_LINK] = g_signal_new ("handle-link",
4062                          G_TYPE_FROM_CLASS (object_class),
4063                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
4064                          G_STRUCT_OFFSET (EvViewClass, handle_link),
4065                          NULL, NULL,
4066                          g_cclosure_marshal_VOID__OBJECT,
4067                          G_TYPE_NONE, 1,
4068                          G_TYPE_OBJECT);
4069         signals[SIGNAL_EXTERNAL_LINK] = g_signal_new ("external-link",
4070                          G_TYPE_FROM_CLASS (object_class),
4071                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
4072                          G_STRUCT_OFFSET (EvViewClass, external_link),
4073                          NULL, NULL,
4074                          g_cclosure_marshal_VOID__OBJECT,
4075                          G_TYPE_NONE, 1,
4076                          G_TYPE_OBJECT);
4077         signals[SIGNAL_POPUP_MENU] = g_signal_new ("popup",
4078                          G_TYPE_FROM_CLASS (object_class),
4079                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
4080                          G_STRUCT_OFFSET (EvViewClass, popup_menu),
4081                          NULL, NULL,
4082                          g_cclosure_marshal_VOID__OBJECT,
4083                          G_TYPE_NONE, 1,
4084                          G_TYPE_OBJECT);
4085
4086
4087         g_object_class_install_property (object_class,
4088                                          PROP_FIND_STATUS,
4089                                          g_param_spec_string ("find-status",
4090                                                               "Find Status Message",
4091                                                               "The find status message",
4092                                                               NULL,
4093                                                               G_PARAM_READABLE));
4094
4095         g_object_class_install_property (object_class,
4096                                          PROP_CONTINUOUS,
4097                                          g_param_spec_boolean ("continuous",
4098                                                                "Continuous",
4099                                                                "Continuous scrolling mode",
4100                                                                TRUE,
4101                                                                G_PARAM_READWRITE));
4102
4103         g_object_class_install_property (object_class,
4104                                          PROP_DUAL_PAGE,
4105                                          g_param_spec_boolean ("dual-page",
4106                                                                "Dual Page",
4107                                                                "Two pages visible at once",
4108                                                                FALSE,
4109                                                                G_PARAM_READWRITE));
4110         g_object_class_install_property (object_class,
4111                                          PROP_FULLSCREEN,
4112                                          g_param_spec_boolean ("fullscreen",
4113                                                                "Full Screen",
4114                                                                "Draw page in a fullscreen fashion",
4115                                                                FALSE,
4116                                                                G_PARAM_READWRITE));
4117         g_object_class_install_property (object_class,
4118                                          PROP_PRESENTATION,
4119                                          g_param_spec_boolean ("presentation",
4120                                                                "Presentation",
4121                                                                "Draw page in presentation mode",
4122                                                                TRUE,
4123                                                                G_PARAM_READWRITE));
4124
4125         g_object_class_install_property (object_class,
4126                                          PROP_SIZING_MODE,
4127                                          g_param_spec_enum ("sizing-mode",
4128                                                             "Sizing Mode",
4129                                                             "Sizing Mode",
4130                                                             EV_TYPE_SIZING_MODE,
4131                                                             EV_SIZING_FIT_WIDTH,
4132                                                             G_PARAM_READWRITE));
4133
4134         g_object_class_install_property (object_class,
4135                                          PROP_ZOOM,
4136                                          g_param_spec_double ("zoom",
4137                                                               "Zoom factor",
4138                                                               "Zoom factor",
4139                                                               0,
4140                                                               G_MAXDOUBLE,
4141                                                               1.0,
4142                                                               G_PARAM_READWRITE));
4143         g_object_class_install_property (object_class,
4144                                          PROP_ROTATION,
4145                                          g_param_spec_double ("rotation",
4146                                                               "Rotation",
4147                                                               "Rotation",
4148                                                               0,
4149                                                               360,
4150                                                               0,
4151                                                               G_PARAM_READWRITE));
4152         g_object_class_install_property (object_class,
4153                                          PROP_HAS_SELECTION,
4154                                          g_param_spec_boolean ("has-selection",
4155                                                                "Has selection",
4156                                                                "The view has selections",
4157                                                                FALSE,
4158                                                                G_PARAM_READABLE));
4159
4160         binding_set = gtk_binding_set_by_class (class);
4161
4162         add_scroll_binding_keypad (binding_set, GDK_Left,  0, EV_SCROLL_STEP_BACKWARD, TRUE);
4163         add_scroll_binding_keypad (binding_set, GDK_Right, 0, EV_SCROLL_STEP_FORWARD,  TRUE);
4164         add_scroll_binding_keypad (binding_set, GDK_Left,  GDK_MOD1_MASK, EV_SCROLL_STEP_DOWN, TRUE);
4165         add_scroll_binding_keypad (binding_set, GDK_Right, GDK_MOD1_MASK, EV_SCROLL_STEP_UP,  TRUE);
4166         add_scroll_binding_keypad (binding_set, GDK_Up,    0, EV_SCROLL_STEP_BACKWARD, FALSE);
4167         add_scroll_binding_keypad (binding_set, GDK_Down,  0, EV_SCROLL_STEP_FORWARD,  FALSE);
4168         add_scroll_binding_keypad (binding_set, GDK_Up,    GDK_MOD1_MASK, EV_SCROLL_STEP_DOWN, FALSE);
4169         add_scroll_binding_keypad (binding_set, GDK_Down,  GDK_MOD1_MASK, EV_SCROLL_STEP_UP,  FALSE);
4170         gtk_binding_entry_add_signal (binding_set, GDK_H, 0, "binding_activated", 2, EV_TYPE_SCROLL_TYPE,
4171                                       EV_SCROLL_STEP_BACKWARD, G_TYPE_BOOLEAN, TRUE);
4172         gtk_binding_entry_add_signal (binding_set, GDK_J, 0, "binding_activated", 2, EV_TYPE_SCROLL_TYPE,
4173                                       EV_SCROLL_STEP_FORWARD, G_TYPE_BOOLEAN, FALSE);
4174         gtk_binding_entry_add_signal (binding_set, GDK_K, 0, "binding_activated", 2, EV_TYPE_SCROLL_TYPE,
4175                                       EV_SCROLL_STEP_BACKWARD, G_TYPE_BOOLEAN, FALSE);
4176         gtk_binding_entry_add_signal (binding_set, GDK_L, 0, "binding_activated", 2, EV_TYPE_SCROLL_TYPE,
4177                                       EV_SCROLL_STEP_FORWARD, G_TYPE_BOOLEAN, TRUE);
4178
4179 }
4180
4181 static void
4182 ev_view_init (EvView *view)
4183 {
4184         GTK_WIDGET_SET_FLAGS (view, GTK_CAN_FOCUS);
4185
4186         view->spacing = 5;
4187         view->scale = 1.0;
4188         view->current_page = 0;
4189         view->pressed_button = -1;
4190         view->cursor = EV_VIEW_CURSOR_NORMAL;
4191         view->drag_info.in_drag = FALSE;
4192         view->scroll_info.autoscrolling = FALSE;
4193         view->selection_info.selections = NULL;
4194         view->selection_info.in_selection = FALSE;
4195         view->selection_info.in_drag = FALSE;
4196         view->selection_mode = EV_VIEW_SELECTION_TEXT;
4197         view->continuous = TRUE;
4198         view->dual_page = FALSE;
4199         view->presentation = FALSE;
4200         view->presentation_state = EV_PRESENTATION_NORMAL;
4201         view->fullscreen = FALSE;
4202         view->sizing_mode = EV_SIZING_FIT_WIDTH;
4203         view->pending_scroll = SCROLL_TO_KEEP_POSITION;
4204         view->jump_to_find_result = TRUE;
4205         view->highlight_find_results = FALSE;
4206
4207         gtk_layout_set_hadjustment (GTK_LAYOUT (view), NULL);
4208         gtk_layout_set_vadjustment (GTK_LAYOUT (view), NULL);
4209
4210         gtk_drag_dest_set (GTK_WIDGET (view),
4211                            GTK_DEST_DEFAULT_ALL,
4212                            view_drop_targets,
4213                            G_N_ELEMENTS (view_drop_targets),
4214                            GDK_ACTION_COPY);
4215 }
4216
4217 /*** Callbacks ***/
4218
4219 static void
4220 find_changed_cb (EvDocument *document, int page, EvView *view)
4221 {
4222         double percent;
4223         int n_pages;
4224
4225         percent = ev_document_find_get_progress
4226                         (EV_DOCUMENT_FIND (view->document));
4227         n_pages = ev_page_cache_get_n_pages (view->page_cache);
4228
4229         if (view->jump_to_find_result == TRUE) {
4230                 jump_to_find_page (view, EV_VIEW_FIND_NEXT, 0);
4231                 jump_to_find_result (view);
4232         }
4233         update_find_status_message (view, percent * n_pages >= n_pages - 1 );
4234         if (view->current_page == page)
4235                 gtk_widget_queue_draw (GTK_WIDGET (view));
4236 }
4237
4238 static void
4239 ev_view_change_page (EvView *view,
4240                      gint    new_page)
4241 {
4242         gint x, y;
4243
4244         view->current_page = new_page;
4245         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
4246
4247         if (view->presentation)
4248                 ev_view_presentation_transition_start (view);
4249
4250         gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
4251         ev_view_handle_cursor_over_xy (view, x, y);
4252
4253         gtk_widget_queue_resize (GTK_WIDGET (view));
4254 }
4255
4256 static void
4257 ev_view_transition_animation_finish (EvTransitionAnimation *animation,
4258                                      EvView                *view)
4259 {
4260         g_object_unref (view->animation);
4261         view->animation = NULL;
4262         ev_view_change_page (view, view->current_page);
4263 }
4264
4265 static void
4266 ev_view_transition_animation_frame (EvTransitionAnimation *animation,
4267                                     gdouble                progress,
4268                                     EvView                *view)
4269 {
4270         gtk_widget_queue_draw (GTK_WIDGET (view));
4271 }
4272
4273 static void
4274 ev_view_presentation_animation_start (EvView *view,
4275                                       int     new_page)
4276 {
4277         EvTransitionEffect *effect = NULL;
4278         cairo_surface_t *surface;
4279
4280         if (EV_IS_DOCUMENT_TRANSITION (view->document))
4281                 effect = ev_document_transition_get_effect (EV_DOCUMENT_TRANSITION (view->document),
4282                                                             view->current_page);
4283         if (!effect)
4284                 return;
4285
4286         surface = ev_pixbuf_cache_get_surface (view->pixbuf_cache, view->current_page);
4287         view->animation = ev_transition_animation_new (effect);
4288         ev_transition_animation_set_origin_surface (view->animation, surface);
4289
4290         g_signal_connect (view->animation, "frame",
4291                           G_CALLBACK (ev_view_transition_animation_frame), view);
4292         g_signal_connect (view->animation, "finished",
4293                           G_CALLBACK (ev_view_transition_animation_finish), view);
4294 }
4295
4296 static void
4297 job_finished_cb (EvPixbufCache *pixbuf_cache,
4298                  GdkRegion     *region,
4299                  EvView        *view)
4300 {
4301         if (view->animation) {
4302                 cairo_surface_t *surface;
4303
4304                 surface = ev_pixbuf_cache_get_surface (pixbuf_cache, view->current_page);
4305                 ev_transition_animation_set_dest_surface (view->animation, surface);
4306         }
4307
4308         if (region) {
4309                 gdk_window_invalidate_region (view->layout.bin_window,
4310                                               region, TRUE);
4311         } else {
4312                 gtk_widget_queue_draw (GTK_WIDGET (view));
4313         }
4314 }
4315
4316 static void
4317 page_changed_cb (EvPageCache *page_cache,
4318                  int          new_page,
4319                  EvView      *view)
4320 {
4321         if (view->current_page != new_page) {
4322                 if (view->presentation)
4323                         ev_view_presentation_animation_start (view, new_page);
4324
4325                 ev_view_change_page (view, new_page);
4326         } else {
4327                 gtk_widget_queue_draw (GTK_WIDGET (view));
4328         }
4329
4330         if (EV_IS_DOCUMENT_FIND (view->document)) {
4331                 view->find_result = 0;
4332                 update_find_status_message (view, TRUE);
4333         }
4334 }
4335
4336 static void
4337 on_adjustment_value_changed (GtkAdjustment *adjustment,
4338                              EvView        *view)
4339 {
4340         int dx = 0, dy = 0;
4341         gint x, y;
4342         GList *children, *l;
4343
4344         if (! GTK_WIDGET_REALIZED (view))
4345                 return;
4346
4347         if (view->hadjustment) {
4348                 dx = view->scroll_x - (int) view->hadjustment->value;
4349                 view->scroll_x = (int) view->hadjustment->value;
4350         } else {
4351                 view->scroll_x = 0;
4352         }
4353
4354         if (view->vadjustment) {
4355                 dy = view->scroll_y - (int) view->vadjustment->value;
4356                 view->scroll_y = (int) view->vadjustment->value;
4357         } else {
4358                 view->scroll_y = 0;
4359         }
4360
4361         children = gtk_container_get_children (GTK_CONTAINER (view));
4362         for (l = children; l && l->data; l = g_list_next (l)) {
4363                 gint       child_x, child_y;
4364                 GtkWidget *child = (GtkWidget *)l->data;
4365
4366                 gtk_container_child_get (GTK_CONTAINER (view),
4367                                          child,
4368                                          "x", &child_x,
4369                                          "y", &child_y,
4370                                          NULL);
4371                 gtk_layout_move (GTK_LAYOUT (view), child, child_x + dx, child_y + dy);
4372         }
4373         g_list_free (children);
4374
4375         if (view->pending_resize)
4376                 gtk_widget_queue_draw (GTK_WIDGET (view));
4377         else
4378                 gdk_window_scroll (view->layout.bin_window, dx, dy);
4379
4380         gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
4381         ev_view_handle_cursor_over_xy (view, x, y);
4382
4383         if (view->document)
4384                 view_update_range_and_current_page (view);
4385 }
4386
4387 GtkWidget*
4388 ev_view_new (void)
4389 {
4390         GtkWidget *view;
4391
4392         view = g_object_new (EV_TYPE_VIEW, NULL);
4393
4394         return view;
4395 }
4396
4397 static void
4398 setup_caches (EvView *view)
4399 {
4400         view->page_cache = ev_page_cache_get (view->document);
4401         g_signal_connect (view->page_cache, "page-changed", G_CALLBACK (page_changed_cb), view);
4402         view->pixbuf_cache = ev_pixbuf_cache_new (GTK_WIDGET (view), view->document);
4403         g_signal_connect (view->pixbuf_cache, "job-finished", G_CALLBACK (job_finished_cb), view);
4404         page_changed_cb (view->page_cache,
4405                          ev_page_cache_get_current_page (view->page_cache),
4406                          view);
4407 }
4408
4409 static void
4410 clear_caches (EvView *view)
4411 {
4412         if (view->pixbuf_cache) {
4413                 g_object_unref (view->pixbuf_cache);
4414                 view->pixbuf_cache = NULL;
4415         }
4416
4417         if (view->page_cache) {
4418                 view->page_cache = NULL;
4419         }
4420 }
4421
4422 void
4423 ev_view_set_loading (EvView       *view,
4424                      gboolean      loading)
4425 {
4426         view->loading = loading;
4427         gtk_widget_queue_draw (GTK_WIDGET (view));
4428 }
4429
4430 static gboolean
4431 ev_view_autoscroll_cb (EvView *view)
4432 {
4433         gdouble speed, value;
4434
4435         /* If the user stops autoscrolling, autoscrolling will be
4436          * set to false but the timeout will continue; stop the timeout: */
4437         if (!view->scroll_info.autoscrolling) {
4438                 view->scroll_info.timeout_id = 0;
4439                 return FALSE;
4440         }
4441
4442         if (view->scroll_info.last_y > view->scroll_info.start_y &&
4443                 (view->scroll_info.last_y < view->scroll_info.start_y))
4444                 return TRUE;
4445
4446         /* Replace 100 with your speed of choice: The lower the faster.
4447          * Replace 3 with another speed of choice: The higher, the faster it accelerated
4448          *      based on the distance of the starting point from the mouse
4449          * (All also effected by the timeout interval of this callback) */
4450
4451         if (view->scroll_info.start_y > view->scroll_info.last_y)
4452                 speed = -pow ((((gdouble)view->scroll_info.start_y - view->scroll_info.last_y) / 100), 3);
4453         else
4454                 speed = pow ((((gdouble)view->scroll_info.last_y - view->scroll_info.start_y) / 100), 3);
4455
4456         value = gtk_adjustment_get_value (view->vadjustment);
4457         value = CLAMP (value + speed, 0, view->vadjustment->upper - view->vadjustment->page_size);
4458         gtk_adjustment_set_value (view->vadjustment, value);
4459
4460         return TRUE;
4461
4462 }
4463
4464 void
4465 ev_view_autoscroll_start (EvView *view)
4466 {
4467         gint x, y;
4468
4469         g_return_if_fail (EV_IS_VIEW (view));
4470
4471         if (view->scroll_info.autoscrolling)
4472                 return;
4473
4474         view->scroll_info.autoscrolling = TRUE;
4475         view->scroll_info.timeout_id =
4476                 g_timeout_add (20, (GSourceFunc)ev_view_autoscroll_cb,
4477                                view);
4478
4479         gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
4480         ev_view_handle_cursor_over_xy (view, x, y);
4481 }
4482
4483 void
4484 ev_view_autoscroll_stop (EvView *view)
4485 {
4486         gint x, y;
4487
4488         g_return_if_fail (EV_IS_VIEW (view));
4489
4490         if (!view->scroll_info.autoscrolling)
4491                 return;
4492
4493         view->scroll_info.autoscrolling = FALSE;
4494         if (view->scroll_info.timeout_id) {
4495                 g_source_remove (view->scroll_info.timeout_id);
4496                 view->scroll_info.timeout_id = 0;
4497         }
4498
4499         gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
4500         ev_view_handle_cursor_over_xy (view, x, y);
4501 }
4502
4503 void
4504 ev_view_set_document (EvView     *view,
4505                       EvDocument *document)
4506 {
4507         g_return_if_fail (EV_IS_VIEW (view));
4508
4509         view->loading = FALSE;
4510
4511         if (document != view->document) {
4512                 clear_caches (view);
4513
4514                 if (view->document) {
4515                         g_signal_handlers_disconnect_by_func (view->document,
4516                                                               find_changed_cb,
4517                                                               view);
4518                         g_object_unref (view->document);
4519                         view->page_cache = NULL;
4520
4521                 }
4522
4523                 view->document = document;
4524                 view->find_result = 0;
4525
4526                 if (view->document) {
4527                         g_object_ref (view->document);
4528                         if (EV_IS_DOCUMENT_FIND (view->document)) {
4529                                 g_signal_connect (view->document,
4530                                                   "find_changed",
4531                                                   G_CALLBACK (find_changed_cb),
4532                                                   view);
4533                         }
4534
4535                         setup_caches (view);
4536                 }
4537
4538                 gtk_widget_queue_resize (GTK_WIDGET (view));
4539         }
4540 }
4541
4542 /*** Zoom and sizing mode ***/
4543
4544 #define EPSILON 0.0000001
4545 void
4546 ev_view_set_zoom (EvView   *view,
4547                   double    factor,
4548                   gboolean  relative)
4549 {
4550         double scale;
4551
4552         if (relative)
4553                 scale = view->scale * factor;
4554         else
4555                 scale = factor;
4556
4557         scale = CLAMP (scale,
4558                        view->sizing_mode == EV_SIZING_FREE ? view->min_scale : 0,
4559                        view->max_scale);
4560
4561         if (ABS (view->scale - scale) < EPSILON)
4562                 return;
4563
4564         if (view->loading_text) {
4565                 cairo_surface_destroy (view->loading_text);
4566                 view->loading_text = NULL;
4567         }
4568
4569         view->scale = scale;
4570         view->pending_resize = TRUE;
4571
4572         gtk_widget_queue_resize (GTK_WIDGET (view));
4573
4574         g_object_notify (G_OBJECT (view), "zoom");
4575 }
4576
4577 double
4578 ev_view_get_zoom (EvView *view)
4579 {
4580         return view->scale;
4581 }
4582
4583 void
4584 ev_view_set_screen_dpi (EvView  *view,
4585                         gdouble  dpi)
4586 {
4587         g_return_if_fail (EV_IS_VIEW (view));
4588         g_return_if_fail (dpi > 0);
4589
4590         view->dpi = dpi;
4591         view->min_scale = MIN_SCALE * dpi / 72.0;
4592         view->max_scale = MAX_SCALE * dpi / 72.0;
4593 }
4594
4595 gboolean
4596 ev_view_get_continuous (EvView *view)
4597 {
4598         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
4599
4600         return view->continuous;
4601 }
4602
4603 void
4604 ev_view_set_continuous (EvView   *view,
4605                         gboolean  continuous)
4606 {
4607         g_return_if_fail (EV_IS_VIEW (view));
4608
4609         continuous = continuous != FALSE;
4610
4611         if (view->continuous != continuous) {
4612                 view->continuous = continuous;
4613                 view->pending_scroll = SCROLL_TO_PAGE_POSITION;
4614                 gtk_widget_queue_resize (GTK_WIDGET (view));
4615         }
4616
4617         g_object_notify (G_OBJECT (view), "continuous");
4618 }
4619
4620 gboolean
4621 ev_view_get_dual_page (EvView *view)
4622 {
4623         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
4624
4625         return view->dual_page;
4626 }
4627
4628 void
4629 ev_view_set_dual_page (EvView   *view,
4630                        gboolean  dual_page)
4631 {
4632         g_return_if_fail (EV_IS_VIEW (view));
4633
4634         dual_page = dual_page != FALSE;
4635
4636         if (view->dual_page == dual_page)
4637                 return;
4638
4639         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
4640         view->dual_page = dual_page;
4641         /* FIXME: if we're keeping the pixbuf cache around, we should extend the
4642          * preload_cache_size to be 2 if dual_page is set.
4643          */
4644         gtk_widget_queue_resize (GTK_WIDGET (view));
4645
4646         g_object_notify (G_OBJECT (view), "dual-page");
4647 }
4648
4649 void
4650 ev_view_set_fullscreen (EvView   *view,
4651                          gboolean  fullscreen)
4652 {
4653         g_return_if_fail (EV_IS_VIEW (view));
4654
4655         fullscreen = fullscreen != FALSE;
4656
4657         if (view->fullscreen == fullscreen)
4658                 return;
4659
4660         view->fullscreen = fullscreen;
4661         gtk_widget_queue_resize (GTK_WIDGET (view));
4662
4663         g_object_notify (G_OBJECT (view), "fullscreen");
4664 }
4665
4666 gboolean
4667 ev_view_get_fullscreen (EvView *view)
4668 {
4669         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
4670
4671         return view->fullscreen;
4672 }
4673
4674 void
4675 ev_view_set_presentation (EvView   *view,
4676                           gboolean  presentation)
4677 {
4678         g_return_if_fail (EV_IS_VIEW (view));
4679
4680         presentation = presentation != FALSE;
4681
4682         if (view->presentation == presentation)
4683                 return;
4684
4685         if (!presentation)
4686                 view->presentation_state = EV_PRESENTATION_NORMAL;
4687
4688         view->presentation = presentation;
4689         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
4690
4691         if (presentation) {
4692                 view->sizing_mode_saved = view->sizing_mode;
4693                 view->scale_saved = view->scale;
4694                 ev_view_set_sizing_mode (view, EV_SIZING_BEST_FIT);
4695         } else {
4696                 ev_view_set_sizing_mode (view, view->sizing_mode_saved);
4697                 ev_view_set_zoom (view, view->scale_saved, FALSE);
4698         }
4699
4700         gtk_widget_queue_resize (GTK_WIDGET (view));
4701
4702         if (presentation)
4703                 ev_view_presentation_transition_start (view);
4704         else {
4705                 ev_view_presentation_transition_stop (view);
4706
4707                 if (view->animation) {
4708                         /* stop any running animation */
4709                         ev_view_transition_animation_finish (view->animation, view);
4710                 }
4711         }
4712
4713         if (GTK_WIDGET_REALIZED (view)) {
4714                 if (view->presentation)
4715                         gdk_window_set_background (view->layout.bin_window,
4716                                                    &GTK_WIDGET (view)->style->black);
4717                 else
4718                         gdk_window_set_background (view->layout.bin_window,
4719                                                    &GTK_WIDGET (view)->style->mid [GTK_STATE_NORMAL]);
4720         }
4721
4722         g_object_notify (G_OBJECT (view), "presentation");
4723 }
4724
4725 gboolean
4726 ev_view_get_presentation (EvView *view)
4727 {
4728         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
4729
4730         return view->presentation;
4731 }
4732
4733 static gboolean
4734 transition_next_page (EvView *view)
4735 {
4736         ev_view_next_page (view);
4737
4738         return FALSE;
4739 }
4740
4741 static void
4742 ev_view_presentation_transition_stop (EvView *view)
4743 {
4744         if (view->trans_timeout_id > 0)
4745                 g_source_remove (view->trans_timeout_id);
4746         view->trans_timeout_id = 0;
4747 }
4748
4749 static void
4750 ev_view_presentation_transition_start (EvView *view)
4751 {
4752         gdouble duration;
4753
4754         if (!EV_IS_DOCUMENT_TRANSITION (view->document))
4755                 return;
4756
4757         ev_view_presentation_transition_stop (view);
4758
4759         duration = ev_document_transition_get_page_duration (EV_DOCUMENT_TRANSITION (view->document),
4760                                                              view->current_page);
4761         if (duration > 0) {
4762                 view->trans_timeout_id =
4763                         g_timeout_add_seconds (duration,
4764                                                (GSourceFunc) transition_next_page,
4765                                                view);
4766         }
4767 }
4768
4769 void
4770 ev_view_set_sizing_mode (EvView       *view,
4771                          EvSizingMode  sizing_mode)
4772 {
4773         g_return_if_fail (EV_IS_VIEW (view));
4774
4775         if (view->sizing_mode == sizing_mode)
4776                 return;
4777
4778         view->sizing_mode = sizing_mode;
4779         gtk_widget_queue_resize (GTK_WIDGET (view));
4780
4781         g_object_notify (G_OBJECT (view), "sizing-mode");
4782 }
4783
4784 EvSizingMode
4785 ev_view_get_sizing_mode (EvView *view)
4786 {
4787         g_return_val_if_fail (EV_IS_VIEW (view), EV_SIZING_FREE);
4788
4789         return view->sizing_mode;
4790 }
4791
4792 gboolean
4793 ev_view_can_zoom_in (EvView *view)
4794 {
4795         return view->scale * ZOOM_IN_FACTOR <= view->max_scale;
4796 }
4797
4798 gboolean
4799 ev_view_can_zoom_out (EvView *view)
4800 {
4801         return view->scale * ZOOM_OUT_FACTOR >= view->min_scale;
4802 }
4803
4804 void
4805 ev_view_zoom_in (EvView *view)
4806 {
4807         g_return_if_fail (view->sizing_mode == EV_SIZING_FREE);
4808
4809         if (view->presentation)
4810                 return;
4811
4812         view->pending_scroll = SCROLL_TO_CENTER;
4813         ev_view_set_zoom (view, ZOOM_IN_FACTOR, TRUE);
4814 }
4815
4816 void
4817 ev_view_zoom_out (EvView *view)
4818 {
4819         g_return_if_fail (view->sizing_mode == EV_SIZING_FREE);
4820
4821         if (view->presentation)
4822                 return;
4823
4824         view->pending_scroll = SCROLL_TO_CENTER;
4825         ev_view_set_zoom (view, ZOOM_OUT_FACTOR, TRUE);
4826 }
4827
4828 void
4829 ev_view_rotate_right (EvView *view)
4830 {
4831         int rotation = view->rotation + 90;
4832
4833         if (rotation >= 360) {
4834                 rotation -= 360;
4835         }
4836
4837         ev_view_set_rotation (view, rotation);
4838 }
4839
4840 void
4841 ev_view_rotate_left (EvView *view)
4842 {
4843         int rotation = view->rotation - 90;
4844
4845         if (rotation < 0) {
4846                 rotation += 360;
4847         }
4848
4849         ev_view_set_rotation (view, rotation);
4850 }
4851
4852 void
4853 ev_view_set_rotation (EvView *view, int rotation)
4854 {
4855         view->rotation = rotation;
4856
4857         if (view->pixbuf_cache) {
4858                 ev_pixbuf_cache_clear (view->pixbuf_cache);
4859                 gtk_widget_queue_resize (GTK_WIDGET (view));
4860         }
4861
4862         if (rotation != 0)
4863                 clear_selection (view);
4864
4865         g_object_notify (G_OBJECT (view), "rotation");
4866 }
4867
4868 int
4869 ev_view_get_rotation (EvView *view)
4870 {
4871         return view->rotation;
4872 }
4873
4874 static double
4875 zoom_for_size_fit_width (int doc_width,
4876                          int doc_height,
4877                          int target_width,
4878                          int target_height,
4879                          int vsb_width)
4880 {
4881         double scale;
4882
4883         scale = (double)target_width / doc_width;
4884
4885         if (doc_height * scale > target_height)
4886                 scale = (double) (target_width - vsb_width) / doc_width;
4887
4888         return scale;
4889 }
4890
4891 static double
4892 zoom_for_size_fit_height (int doc_width,
4893                           int doc_height,
4894                           int target_width,
4895                           int target_height,
4896                           int vsb_height)
4897 {
4898         double scale;
4899
4900         scale = (double)target_height / doc_height;
4901
4902         if (doc_width * scale > target_width)
4903                 scale = (double) (target_height - vsb_height) / doc_height;
4904
4905         return scale;
4906 }
4907
4908 static double
4909 zoom_for_size_best_fit (int doc_width,
4910                         int doc_height,
4911                         int target_width,
4912                         int target_height,
4913                         int vsb_width,
4914                         int hsb_width)
4915 {
4916         double w_scale;
4917         double h_scale;
4918
4919         w_scale = (double)target_width / doc_width;
4920         h_scale = (double)target_height / doc_height;
4921
4922         if (doc_height * w_scale > target_height)
4923                 w_scale = (double) (target_width - vsb_width) / doc_width;
4924         if (doc_width * h_scale > target_width)
4925                 h_scale = (double) (target_height - hsb_width) / doc_height;
4926
4927         return MIN (w_scale, h_scale);
4928 }
4929
4930
4931 static void
4932 ev_view_zoom_for_size_presentation (EvView *view,
4933                                     int     width,
4934                                     int     height)
4935 {
4936         int doc_width, doc_height;
4937         gdouble scale;
4938
4939         ev_page_cache_get_size (view->page_cache,
4940                                 view->current_page,
4941                                 view->rotation,
4942                                 1.0,
4943                                 &doc_width,
4944                                 &doc_height);
4945         scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, 0, 0);
4946         ev_view_set_zoom (view, scale, FALSE);
4947 }
4948
4949 static void
4950 ev_view_zoom_for_size_continuous_and_dual_page (EvView *view,
4951                            int     width,
4952                            int     height,
4953                            int     vsb_width,
4954                            int     hsb_height)
4955 {
4956         int doc_width, doc_height;
4957         GtkBorder border;
4958         gdouble scale;
4959
4960         ev_page_cache_get_max_width (view->page_cache,
4961                                      view->rotation,
4962                                      1.0,
4963                                      &doc_width);
4964         ev_page_cache_get_max_height (view->page_cache,
4965                                       view->rotation,
4966                                       1.0,
4967                                       &doc_height);
4968         compute_border (view, doc_width, doc_height, &border);
4969
4970         doc_width = doc_width * 2;
4971         width -= (2 * (border.left + border.right) + 3 * view->spacing);
4972         height -= (border.top + border.bottom + 2 * view->spacing - 1);
4973
4974         /* FIXME: We really need to calculate the overall height here, not the
4975          * page height.  We assume there's always a vertical scrollbar for
4976          * now.  We need to fix this. */
4977         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
4978                 scale = zoom_for_size_fit_width (doc_width, doc_height, width - vsb_width, height, 0);
4979         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
4980                 scale = zoom_for_size_best_fit (doc_width, doc_height, width - vsb_width, height, 0, hsb_height);
4981         else
4982                 g_assert_not_reached ();
4983
4984         ev_view_set_zoom (view, scale, FALSE);
4985 }
4986
4987 static void
4988 ev_view_zoom_for_size_continuous (EvView *view,
4989                                   int     width,
4990                                   int     height,
4991                                   int     vsb_width,
4992                                   int     hsb_height)
4993 {
4994         int doc_width, doc_height;
4995         GtkBorder border;
4996         gdouble scale;
4997
4998         ev_page_cache_get_max_width (view->page_cache,
4999                                      view->rotation,
5000                                      1.0,
5001                                      &doc_width);
5002         ev_page_cache_get_max_height (view->page_cache,
5003                                       view->rotation,
5004                                       1.0,
5005                                       &doc_height);
5006         compute_border (view, doc_width, doc_height, &border);
5007
5008         width -= (border.left + border.right + 2 * view->spacing);
5009         height -= (border.top + border.bottom + 2 * view->spacing - 1);
5010
5011         /* FIXME: We really need to calculate the overall height here, not the
5012          * page height.  We assume there's always a vertical scrollbar for
5013          * now.  We need to fix this. */
5014         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
5015                 scale = zoom_for_size_fit_width (doc_width, doc_height, width - vsb_width, height, 0);
5016         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
5017                 scale = zoom_for_size_best_fit (doc_width, doc_height, width - vsb_width, height, 0, hsb_height);
5018         else
5019                 g_assert_not_reached ();
5020
5021         ev_view_set_zoom (view, scale, FALSE);
5022 }
5023
5024 static void
5025 ev_view_zoom_for_size_dual_page (EvView *view,
5026                                  int     width,
5027                                  int     height,
5028                                  int     vsb_width,
5029                                  int     hsb_height)
5030 {
5031         GtkBorder border;
5032         gint doc_width, doc_height;
5033         gdouble scale;
5034         gint other_page;
5035
5036         other_page = view->current_page ^ 1;
5037
5038         /* Find the largest of the two. */
5039         ev_page_cache_get_size (view->page_cache,
5040                                 view->current_page,
5041                                 view->rotation,
5042                                 1.0,
5043                                 &doc_width, &doc_height);
5044
5045         if (other_page < ev_page_cache_get_n_pages (view->page_cache)) {
5046                 gint width_2, height_2;
5047                 ev_page_cache_get_size (view->page_cache,
5048                                         other_page,
5049                                         view->rotation,
5050                                         1.0,
5051                                         &width_2, &height_2);
5052                 if (width_2 > doc_width)
5053                         doc_width = width_2;
5054                 if (height_2 > doc_height)
5055                         doc_height = height_2;
5056         }
5057         compute_border (view, doc_width, doc_height, &border);
5058
5059         doc_width = doc_width * 2;
5060         width -= ((border.left + border.right)* 2 + 3 * view->spacing);
5061         height -= (border.top + border.bottom + 2 * view->spacing);
5062
5063         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
5064                 scale = zoom_for_size_fit_width (doc_width, doc_height, width, height, vsb_width);
5065         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
5066                 scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, vsb_width, hsb_height);
5067         else
5068                 g_assert_not_reached ();
5069
5070         ev_view_set_zoom (view, scale, FALSE);
5071 }
5072
5073 static void
5074 ev_view_zoom_for_size_single_page (EvView *view,
5075                                    int     width,
5076                                    int     height,
5077                                    int     vsb_width,
5078                                    int     hsb_height)
5079 {
5080         int doc_width, doc_height;
5081         GtkBorder border;
5082         gdouble scale;
5083
5084         ev_page_cache_get_size (view->page_cache,
5085                                 view->current_page,
5086                                 view->rotation,
5087                                 1.0,
5088                                 &doc_width,
5089                                 &doc_height);
5090         /* Get an approximate border */
5091         compute_border (view, width, height, &border);
5092
5093         width -= (border.left + border.right + 2 * view->spacing);
5094         height -= (border.top + border.bottom + 2 * view->spacing);
5095
5096         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
5097                 scale = zoom_for_size_fit_width (doc_width, doc_height, width, height, vsb_width);
5098         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
5099                 scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, vsb_width, hsb_height);
5100         else
5101                 g_assert_not_reached ();
5102
5103         ev_view_set_zoom (view, scale, FALSE);
5104 }
5105
5106 static void
5107 ev_view_set_zoom_for_size (EvView *view,
5108                            int     width,
5109                            int     height,
5110                            int     vsb_width,
5111                            int     hsb_height)
5112 {
5113         g_return_if_fail (EV_IS_VIEW (view));
5114         g_return_if_fail (view->sizing_mode == EV_SIZING_FIT_WIDTH ||
5115                           view->sizing_mode == EV_SIZING_BEST_FIT);
5116         g_return_if_fail (width >= 0);
5117         g_return_if_fail (height >= 0);
5118
5119         if (view->document == NULL)
5120                 return;
5121
5122         if (view->presentation)
5123                 ev_view_zoom_for_size_presentation (view, width, height);
5124         else if (view->continuous && view->dual_page)
5125                 ev_view_zoom_for_size_continuous_and_dual_page (view, width, height, vsb_width, hsb_height);
5126         else if (view->continuous)
5127                 ev_view_zoom_for_size_continuous (view, width, height, vsb_width, hsb_height);
5128         else if (view->dual_page)
5129                 ev_view_zoom_for_size_dual_page (view, width, height, vsb_width, hsb_height);
5130         else
5131                 ev_view_zoom_for_size_single_page (view, width, height, vsb_width, hsb_height);
5132 }
5133
5134 /*** Find ***/
5135 static void
5136 update_find_status_message (EvView *view, gboolean this_page)
5137 {
5138         char *message;
5139
5140         if (this_page) {
5141                 int results;
5142
5143                 results = ev_document_find_get_n_results
5144                                 (EV_DOCUMENT_FIND (view->document),
5145                                  view->current_page);
5146                 /* TRANS: Sometimes this could be better translated as
5147                    "%d hit(s) on this page".  Therefore this string
5148                    contains plural cases. */
5149                 message = g_strdup_printf (ngettext ("%d found on this page",
5150                                                      "%d found on this page",
5151                                                      results),
5152                                            results);
5153         } else {
5154                 double percent;
5155
5156                 percent = ev_document_find_get_progress
5157                                 (EV_DOCUMENT_FIND (view->document));
5158                 message = g_strdup_printf (_("%3d%% remaining to search"),
5159                                            (int) ((1.0 - percent) * 100));
5160
5161         }
5162         ev_view_set_find_status (view, message);
5163         g_free (message);
5164 }
5165
5166 const char *
5167 ev_view_get_find_status (EvView *view)
5168 {
5169         g_return_val_if_fail (EV_IS_VIEW (view), NULL);
5170
5171         return view->find_status;
5172 }
5173
5174 static void
5175 ev_view_set_find_status (EvView *view, const char *message)
5176 {
5177         g_return_if_fail (EV_IS_VIEW (view));
5178
5179         g_free (view->find_status);
5180         view->find_status = g_strdup (message);
5181         g_object_notify (G_OBJECT (view), "find-status");
5182 }
5183
5184 static void
5185 jump_to_find_result (EvView *view)
5186 {
5187         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
5188         EvRectangle rect;
5189         GdkRectangle view_rect;
5190         int n_results;
5191         int page = view->current_page;
5192
5193         n_results = ev_document_find_get_n_results (find, page);
5194
5195         if (n_results > 0  && view->find_result < n_results) {
5196                 ev_document_find_get_result
5197                         (find, page, view->find_result, &rect);
5198
5199                 doc_rect_to_view_rect (view, page, &rect, &view_rect);
5200                 ensure_rectangle_is_visible (view, &view_rect);
5201         }
5202 }
5203
5204 /**
5205  * jump_to_find_page
5206  * @view: #EvView instance
5207  * @direction: Direction to look
5208  * @shift: Shift from current page
5209  *
5210  * Jumps to the first page that has occurences of searched word.
5211  * Uses a direction where to look and a shift from current page.
5212  *
5213  */
5214 static void
5215 jump_to_find_page (EvView *view, EvViewFindDirection direction, gint shift)
5216 {
5217         int n_pages, i;
5218
5219         n_pages = ev_page_cache_get_n_pages (view->page_cache);
5220
5221         for (i = 0; i < n_pages; i++) {
5222                 int has_results;
5223                 int page;
5224
5225                 if (direction == EV_VIEW_FIND_NEXT)
5226                         page = view->current_page + i;
5227                 else
5228                         page = view->current_page - i;
5229                 page += shift;
5230
5231                 if (page >= n_pages) {
5232                         page = page - n_pages;
5233                 }
5234                 if (page < 0)
5235                         page = page + n_pages;
5236
5237                 has_results = ev_document_find_page_has_results
5238                                 (EV_DOCUMENT_FIND (view->document), page);
5239                 if (has_results == -1) {
5240                         break;
5241                 } else if (has_results == 1) {
5242                         ev_page_cache_set_current_page (view->page_cache, page);
5243                         break;
5244                 }
5245         }
5246 }
5247
5248 gboolean
5249 ev_view_can_find_next (EvView *view)
5250 {
5251         if (EV_IS_DOCUMENT_FIND (view->document)) {
5252                 EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
5253                 int i, n_pages;
5254
5255                 n_pages = ev_page_cache_get_n_pages (view->page_cache);
5256                 for (i = 0; i < n_pages; i++) {
5257                         if (ev_document_find_get_n_results (find, i) > 0) {
5258                                 return TRUE;
5259                         }
5260                 }
5261         }
5262
5263         return FALSE;
5264 }
5265
5266 void
5267 ev_view_find_next (EvView *view)
5268 {
5269         int n_results, n_pages;
5270         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
5271
5272         n_results = ev_document_find_get_n_results (find, view->current_page);
5273
5274         n_pages = ev_page_cache_get_n_pages (view->page_cache);
5275
5276         view->find_result++;
5277
5278         if (view->find_result >= n_results) {
5279
5280                 view->find_result = 0;
5281                 jump_to_find_page (view, EV_VIEW_FIND_NEXT, 1);
5282                 jump_to_find_result (view);
5283         } else {
5284                 jump_to_find_result (view);
5285                 gtk_widget_queue_draw (GTK_WIDGET (view));
5286         }
5287 }
5288
5289 gboolean
5290 ev_view_can_find_previous (EvView *view)
5291 {
5292         if (EV_IS_DOCUMENT_FIND (view->document)) {
5293                 EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
5294                 int i, n_pages;
5295
5296                 n_pages = ev_page_cache_get_n_pages (view->page_cache);
5297                 for (i = n_pages - 1; i >= 0; i--) {
5298                         if (ev_document_find_get_n_results (find, i) > 0) {
5299                                 return TRUE;
5300                         }
5301                 }
5302         }
5303
5304         return FALSE;
5305 }
5306 void
5307 ev_view_find_previous (EvView *view)
5308 {
5309         int n_results, n_pages;
5310         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
5311         EvPageCache *page_cache;
5312
5313         page_cache = ev_page_cache_get (view->document);
5314
5315         n_results = ev_document_find_get_n_results (find, view->current_page);
5316
5317         n_pages = ev_page_cache_get_n_pages (page_cache);
5318
5319         view->find_result--;
5320
5321         if (view->find_result < 0) {
5322
5323                 jump_to_find_page (view, EV_VIEW_FIND_PREV, -1);
5324                 view->find_result = ev_document_find_get_n_results (find, view->current_page) - 1;
5325                 jump_to_find_result (view);
5326         } else {
5327                 jump_to_find_result (view);
5328                 gtk_widget_queue_draw (GTK_WIDGET (view));
5329         }
5330 }
5331
5332 void ev_view_search_changed (EvView *view)
5333 {
5334         /* search string has changed, focus on new search result */
5335         view->jump_to_find_result = TRUE;
5336 }
5337
5338 void ev_view_set_highlight_search (EvView *view, gboolean value)
5339 {
5340         view->highlight_find_results = value;
5341         gtk_widget_queue_draw (GTK_WIDGET (view));
5342 }
5343
5344 /*** Selections ***/
5345
5346 /* compute_new_selection_rect/text calculates the area currently selected by
5347  * view_rect.  each handles a different mode;
5348  */
5349 static GList *
5350 compute_new_selection_rect (EvView       *view,
5351                             GdkPoint     *start,
5352                             GdkPoint     *stop)
5353 {
5354         GdkRectangle view_rect;
5355         int n_pages, i;
5356         GList *list = NULL;
5357
5358         g_assert (view->selection_mode == EV_VIEW_SELECTION_RECTANGLE);
5359
5360         view_rect.x = MIN (start->x, stop->x);
5361         view_rect.y = MIN (start->y, stop->y);
5362         view_rect.width = MAX (start->x, stop->x) - view_rect.x;
5363         view_rect.width = MAX (start->y, stop->y) - view_rect.y;
5364
5365         n_pages = ev_page_cache_get_n_pages (view->page_cache);
5366
5367         for (i = 0; i < n_pages; i++) {
5368                 GdkRectangle page_area;
5369                 GtkBorder border;
5370
5371                 if (get_page_extents (view, i, &page_area, &border)) {
5372                         GdkRectangle overlap;
5373
5374                         if (gdk_rectangle_intersect (&page_area, &view_rect, &overlap)) {
5375                                 EvViewSelection *selection;
5376
5377                                 selection = g_new0 (EvViewSelection, 1);
5378                                 selection->page = i;
5379                                 view_rect_to_doc_rect (view, &overlap, &page_area,
5380                                                        &(selection->rect));
5381
5382                                 list = g_list_append (list, selection);
5383                         }
5384                 }
5385         }
5386
5387         return list;
5388 }
5389
5390 static gboolean
5391 gdk_rectangle_point_in (GdkRectangle *rectangle,
5392                         GdkPoint     *point)
5393 {
5394         return rectangle->x <= point->x &&
5395                 rectangle->y <= point->y &&
5396                 point->x < rectangle->x + rectangle->width &&
5397                 point->y < rectangle->y + rectangle->height;
5398 }
5399
5400 static GList *
5401 compute_new_selection_text (EvView          *view,
5402                             EvSelectionStyle style,
5403                             GdkPoint        *start,
5404                             GdkPoint        *stop)
5405 {
5406         int n_pages, i, first, last;
5407         GList *list = NULL;
5408         EvViewSelection *selection;
5409         gint width, height;
5410         int start_page, end_page;
5411
5412         g_assert (view->selection_mode == EV_VIEW_SELECTION_TEXT);
5413
5414         n_pages = ev_page_cache_get_n_pages (view->page_cache);
5415
5416         /* First figure out the range of pages the selection
5417          * affects. */
5418         first = n_pages;
5419         last = 0;
5420         if (view->continuous) {
5421                 start_page = 0;
5422                 end_page = n_pages;
5423         } else if (view->dual_page) {
5424                 start_page = view->start_page;
5425                 end_page = view->end_page + 1;
5426         } else {
5427                 start_page = view->current_page;
5428                 end_page = view->current_page + 1;
5429         }
5430
5431         for (i = start_page; i < end_page; i++) {
5432                 GdkRectangle page_area;
5433                 GtkBorder border;
5434
5435                 get_page_extents (view, i, &page_area, &border);
5436                 if (gdk_rectangle_point_in (&page_area, start) ||
5437                     gdk_rectangle_point_in (&page_area, stop)) {
5438                         if (first == n_pages)
5439                                 first = i;
5440                         last = i;
5441                 }
5442
5443         }
5444
5445         /* Now create a list of EvViewSelection's for the affected
5446          * pages.  This could be an empty list, a list of just one
5447          * page or a number of pages.*/
5448         for (i = first; i < last + 1; i++) {
5449                 GdkRectangle page_area;
5450                 GtkBorder border;
5451                 GdkPoint *point;
5452
5453                 ev_page_cache_get_size (view->page_cache, i,
5454                                         view->rotation,
5455                                         1.0, &width, &height);
5456
5457                 selection = g_new0 (EvViewSelection, 1);
5458                 selection->page = i;
5459                 selection->style = style;
5460                 selection->rect.x1 = selection->rect.y1 = 0;
5461                 selection->rect.x2 = width;
5462                 selection->rect.y2 = height;
5463
5464                 get_page_extents (view, i, &page_area, &border);
5465
5466                 if (gdk_rectangle_point_in (&page_area, start))
5467                         point = start;
5468                 else
5469                         point = stop;
5470
5471                 if (i == first)
5472                         view_point_to_doc_point (view, point, &page_area,
5473                                                  &selection->rect.x1,
5474                                                  &selection->rect.y1);
5475
5476                 /* If the selection is contained within just one page,
5477                  * make sure we don't write 'start' into both points
5478                  * in selection->rect. */
5479                 if (first == last)
5480                         point = stop;
5481
5482                 if (i == last)
5483                         view_point_to_doc_point (view, point, &page_area,
5484                                                  &selection->rect.x2,
5485                                                  &selection->rect.y2);
5486
5487                 list = g_list_append (list, selection);
5488         }
5489
5490         return list;
5491 }
5492
5493 /* This function takes the newly calculated list, and figures out which regions
5494  * have changed.  It then queues a redraw approporiately.
5495  */
5496 static void
5497 merge_selection_region (EvView *view,
5498                         GList  *new_list)
5499 {
5500         GList *old_list;
5501         GList *new_list_ptr, *old_list_ptr;
5502
5503         /* Update the selection */
5504         old_list = ev_pixbuf_cache_get_selection_list (view->pixbuf_cache);
5505         g_list_foreach (view->selection_info.selections, (GFunc)selection_free, NULL);
5506         view->selection_info.selections = new_list;
5507         ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, new_list);
5508         g_object_notify (G_OBJECT (view), "has-selection");
5509
5510         new_list_ptr = new_list;
5511         old_list_ptr = old_list;
5512
5513         while (new_list_ptr || old_list_ptr) {
5514                 EvViewSelection *old_sel, *new_sel;
5515                 int cur_page;
5516                 GdkRegion *region = NULL;
5517
5518                 new_sel = (new_list_ptr) ? (new_list_ptr->data) : NULL;
5519                 old_sel = (old_list_ptr) ? (old_list_ptr->data) : NULL;
5520
5521                 /* Assume that the lists are in order, and we run through them
5522                  * comparing them, one page at a time.  We come out with the
5523                  * first page we see. */
5524                 if (new_sel && old_sel) {
5525                         if (new_sel->page < old_sel->page) {
5526                                 new_list_ptr = new_list_ptr->next;
5527                                 old_sel = NULL;
5528                         } else if (new_sel->page > old_sel->page) {
5529                                 old_list_ptr = old_list_ptr->next;
5530                                 new_sel = NULL;
5531                         } else {
5532                                 new_list_ptr = new_list_ptr->next;
5533                                 old_list_ptr = old_list_ptr->next;
5534                         }
5535                 } else if (new_sel) {
5536                         new_list_ptr = new_list_ptr->next;
5537                 } else if (old_sel) {
5538                         old_list_ptr = old_list_ptr->next;
5539                 }
5540
5541                 g_assert (new_sel || old_sel);
5542
5543                 /* is the page we're looking at on the screen?*/
5544                 cur_page = new_sel ? new_sel->page : old_sel->page;
5545                 if (cur_page < view->start_page || cur_page > view->end_page)
5546                         continue;
5547
5548                 /* seed the cache with a new page.  We are going to need the new
5549                  * region too. */
5550                 if (new_sel) {
5551                         GdkRegion *tmp_region = NULL;
5552
5553                         ev_pixbuf_cache_get_selection_surface (view->pixbuf_cache,
5554                                                                cur_page,
5555                                                                view->scale,
5556                                                                &tmp_region);
5557
5558                         if (tmp_region) {
5559                                 new_sel->covered_region = gdk_region_copy (tmp_region);
5560                         }
5561                 }
5562
5563                 /* Now we figure out what needs redrawing */
5564                 if (old_sel && new_sel) {
5565                         if (old_sel->covered_region && new_sel->covered_region) {
5566                                 /* We only want to redraw the areas that have
5567                                  * changed, so we xor the old and new regions
5568                                  * and redraw if it's different */
5569                                 region = gdk_region_copy (old_sel->covered_region);
5570                                 gdk_region_xor (region, new_sel->covered_region);
5571                                 if (gdk_region_empty (region)) {
5572                                         gdk_region_destroy (region);
5573                                         region = NULL;
5574                                 }
5575                         } else if (old_sel->covered_region) {
5576                                 region = gdk_region_copy (old_sel->covered_region);
5577                         } else if (new_sel->covered_region) {
5578                                 region = gdk_region_copy (new_sel->covered_region);
5579                         }
5580                 } else if (old_sel && !new_sel) {
5581                         if (old_sel->covered_region && !gdk_region_empty (old_sel->covered_region)) {
5582                                 region = gdk_region_copy (old_sel->covered_region);
5583                         }
5584                 } else if (!old_sel && new_sel) {
5585                         if (new_sel->covered_region && !gdk_region_empty (new_sel->covered_region)) {
5586                                 region = gdk_region_copy (new_sel->covered_region);
5587                         }
5588                 } else {
5589                         g_assert_not_reached ();
5590                 }
5591
5592                 /* Redraw the damaged region! */
5593                 if (region) {
5594                         GdkRectangle page_area;
5595                         GtkBorder border;
5596
5597                         /* I don't know why but the region is smaller
5598                          * than expected. This hack fixes it, I guess
5599                          * 10 pixels more won't hurt
5600                          */
5601                         gdk_region_shrink (region, -5, -5);
5602
5603                         get_page_extents (view, cur_page, &page_area, &border);
5604                         gdk_region_offset (region,
5605                                            page_area.x + border.left - view->scroll_x,
5606                                            page_area.y + border.top - view->scroll_y);
5607                         gdk_window_invalidate_region (view->layout.bin_window, region, TRUE);
5608                         gdk_region_destroy (region);
5609                 }
5610         }
5611
5612         /* Free the old list, now that we're done with it. */
5613         g_list_foreach (old_list, (GFunc) selection_free, NULL);
5614 }
5615
5616 static void
5617 compute_selections (EvView          *view,
5618                     EvSelectionStyle style,
5619                     GdkPoint        *start,
5620                     GdkPoint        *stop)
5621 {
5622         GList *list;
5623
5624         if (view->selection_mode == EV_VIEW_SELECTION_RECTANGLE)
5625                 list = compute_new_selection_rect (view, start, stop);
5626         else
5627                 list = compute_new_selection_text (view, style, start, stop);
5628         merge_selection_region (view, list);
5629 }
5630
5631 /* Free's the selection.  It's up to the caller to queue redraws if needed.
5632  */
5633 static void
5634 selection_free (EvViewSelection *selection)
5635 {
5636         if (selection->covered_region)
5637                 gdk_region_destroy (selection->covered_region);
5638         g_free (selection);
5639 }
5640
5641 static void
5642 clear_selection (EvView *view)
5643 {
5644         g_list_foreach (view->selection_info.selections, (GFunc)selection_free, NULL);
5645         view->selection_info.selections = NULL;
5646         view->selection_info.in_selection = FALSE;
5647         if (view->pixbuf_cache)
5648                 ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, NULL);
5649         g_object_notify (G_OBJECT (view), "has-selection");
5650 }
5651
5652 void
5653 ev_view_select_all (EvView *view)
5654 {
5655         GList *selections = NULL;
5656         int n_pages, i;
5657
5658         /* Disable selection on rotated pages for the 0.4.0 series */
5659         if (view->rotation != 0)
5660                 return;
5661
5662         clear_selection (view);
5663
5664         n_pages = ev_page_cache_get_n_pages (view->page_cache);
5665         for (i = 0; i < n_pages; i++) {
5666                 int width, height;
5667                 EvViewSelection *selection;
5668
5669                 ev_page_cache_get_size (view->page_cache,
5670                                         i,
5671                                         view->rotation,
5672                                         1.0, &width, &height);
5673
5674                 selection = g_new0 (EvViewSelection, 1);
5675                 selection->page = i;
5676                 selection->style = EV_SELECTION_STYLE_GLYPH;
5677                 selection->rect.x1 = selection->rect.y1 = 0;
5678                 selection->rect.x2 = width;
5679                 selection->rect.y2 = height;
5680
5681                 selections = g_list_append (selections, selection);
5682         }
5683
5684         merge_selection_region (view, selections);
5685         gtk_widget_queue_draw (GTK_WIDGET (view));
5686 }
5687
5688 gboolean
5689 ev_view_get_has_selection (EvView *view)
5690 {
5691         return view->selection_info.selections != NULL;
5692 }
5693
5694 static char *
5695 get_selected_text (EvView *view)
5696 {
5697         GString *text;
5698         GList *l;
5699         gchar *normalized_text;
5700         EvRenderContext *rc;
5701
5702         text = g_string_new (NULL);
5703         rc = ev_render_context_new (view->rotation, 1, view->scale);
5704
5705         ev_document_doc_mutex_lock ();
5706
5707         for (l = view->selection_info.selections; l != NULL; l = l->next) {
5708                 EvViewSelection *selection = (EvViewSelection *)l->data;
5709                 gchar *tmp;
5710
5711                 ev_render_context_set_page (rc, selection->page);
5712                 tmp = ev_selection_get_selected_text (EV_SELECTION (view->document),
5713                                                       rc, selection->style,
5714                                                       &(selection->rect));
5715
5716                 g_string_append (text, tmp);
5717                 g_free (tmp);
5718         }
5719
5720         ev_document_doc_mutex_unlock ();
5721
5722         g_object_unref (rc);
5723
5724         normalized_text = g_utf8_normalize (text->str, text->len, G_NORMALIZE_NFKC);
5725         g_string_free (text, TRUE);
5726         return normalized_text;
5727 }
5728
5729 void
5730 ev_view_copy (EvView *ev_view)
5731 {
5732         GtkClipboard *clipboard;
5733         char *text;
5734
5735         if (!EV_IS_SELECTION (ev_view->document))
5736                 return;
5737
5738         text = get_selected_text (ev_view);
5739         clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view),
5740                                               GDK_SELECTION_CLIPBOARD);
5741         gtk_clipboard_set_text (clipboard, text, -1);
5742         g_free (text);
5743 }
5744
5745 static void
5746 ev_view_primary_get_cb (GtkClipboard     *clipboard,
5747                         GtkSelectionData *selection_data,
5748                         guint             info,
5749                         gpointer          data)
5750 {
5751         EvView *ev_view = EV_VIEW (data);
5752         char *text;
5753
5754         if (!EV_IS_SELECTION (ev_view->document))
5755                 return;
5756
5757         text = get_selected_text (ev_view);
5758         if (text) {
5759                 gtk_selection_data_set_text (selection_data, text, -1);
5760                 g_free (text);
5761         }
5762 }
5763
5764 static void
5765 ev_view_primary_clear_cb (GtkClipboard *clipboard,
5766                           gpointer      data)
5767 {
5768         EvView *view = EV_VIEW (data);
5769
5770         clear_selection (view);
5771 }
5772
5773 static void
5774 ev_view_update_primary_selection (EvView *ev_view)
5775 {
5776         GtkClipboard *clipboard;
5777
5778         clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view),
5779                                               GDK_SELECTION_PRIMARY);
5780
5781         if (ev_view->selection_info.selections) {
5782                 if (!gtk_clipboard_set_with_owner (clipboard,
5783                                                    clipboard_targets,
5784                                                    G_N_ELEMENTS (clipboard_targets),
5785                                                    ev_view_primary_get_cb,
5786                                                    ev_view_primary_clear_cb,
5787                                                    G_OBJECT (ev_view)))
5788                         ev_view_primary_clear_cb (clipboard, ev_view);
5789         } else {
5790                 if (gtk_clipboard_get_owner (clipboard) == G_OBJECT (ev_view))
5791                         gtk_clipboard_clear (clipboard);
5792         }
5793 }
5794
5795 /*** Cursor operations ***/
5796
5797 static GdkCursor *
5798 ev_view_create_invisible_cursor(void)
5799 {
5800        GdkBitmap *empty;
5801        GdkColor black = { 0, 0, 0, 0 };
5802        static char bits[] = { 0x00 };
5803
5804        empty = gdk_bitmap_create_from_data (NULL, bits, 1, 1);
5805
5806        return gdk_cursor_new_from_pixmap (empty, empty, &black, &black, 0, 0);
5807 }
5808
5809 static void
5810 ev_view_set_cursor (EvView *view, EvViewCursor new_cursor)
5811 {
5812         GdkCursor *cursor = NULL;
5813         GdkDisplay *display;
5814         GtkWidget *widget;
5815
5816         if (view->cursor == new_cursor) {
5817                 return;
5818         }
5819
5820         widget = gtk_widget_get_toplevel (GTK_WIDGET (view));
5821         display = gtk_widget_get_display (widget);
5822         view->cursor = new_cursor;
5823
5824         switch (new_cursor) {
5825                 case EV_VIEW_CURSOR_NORMAL:
5826                         gdk_window_set_cursor (view->layout.bin_window, NULL);
5827                         break;
5828                 case EV_VIEW_CURSOR_IBEAM:
5829                         cursor = gdk_cursor_new_for_display (display, GDK_XTERM);
5830                         break;
5831                 case EV_VIEW_CURSOR_LINK:
5832                         cursor = gdk_cursor_new_for_display (display, GDK_HAND2);
5833                         break;
5834                 case EV_VIEW_CURSOR_WAIT:
5835                         cursor = gdk_cursor_new_for_display (display, GDK_WATCH);
5836                         break;
5837                 case EV_VIEW_CURSOR_HIDDEN:
5838                         cursor = ev_view_create_invisible_cursor ();
5839                         break;
5840                 case EV_VIEW_CURSOR_DRAG:
5841                         cursor = gdk_cursor_new_for_display (display, GDK_FLEUR);
5842                         break;
5843                 case EV_VIEW_CURSOR_AUTOSCROLL:
5844                         cursor = gdk_cursor_new_for_display (display, GDK_DOUBLE_ARROW);
5845                         break;
5846         }
5847
5848         if (cursor) {
5849                 gdk_window_set_cursor (view->layout.bin_window, cursor);
5850                 gdk_cursor_unref (cursor);
5851                 gdk_flush();
5852         }
5853 }
5854
5855 void
5856 ev_view_hide_cursor (EvView *view)
5857 {
5858        ev_view_set_cursor (view, EV_VIEW_CURSOR_HIDDEN);
5859 }
5860
5861 void
5862 ev_view_show_cursor (EvView *view)
5863 {
5864        ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
5865 }
5866
5867 static void
5868 ev_view_reset_presentation_state (EvView *view)
5869 {
5870         if (!view->presentation ||
5871             view->presentation_state == EV_PRESENTATION_NORMAL)
5872                 return;
5873
5874         view->presentation_state = EV_PRESENTATION_NORMAL;
5875         gdk_window_set_background (view->layout.bin_window,
5876                                    &GTK_WIDGET (view)->style->black);
5877         gtk_widget_queue_draw (GTK_WIDGET (view));
5878 }
5879
5880 gboolean
5881 ev_view_next_page (EvView *view)
5882 {
5883         int page, n_pages;
5884
5885         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
5886
5887         if (!view->page_cache)
5888                 return FALSE;
5889
5890         if (view->presentation &&
5891             (view->presentation_state == EV_PRESENTATION_BLACK ||
5892              view->presentation_state == EV_PRESENTATION_WHITE)) {
5893                 ev_view_reset_presentation_state (view);
5894                 return FALSE;
5895         }
5896
5897         if (view->animation) {
5898                 ev_view_transition_animation_finish (view->animation, view);
5899                 return TRUE;
5900         }
5901
5902         ev_view_presentation_transition_stop (view);
5903         ev_view_reset_presentation_state (view);
5904
5905         page = ev_page_cache_get_current_page (view->page_cache);
5906         n_pages = ev_page_cache_get_n_pages (view->page_cache);
5907
5908         if (view->dual_page && !view->presentation)
5909                 page = page + 2;
5910         else
5911                 page = page + 1;
5912
5913         if (page < n_pages) {
5914                 ev_page_cache_set_current_page (view->page_cache, page);
5915                 return TRUE;
5916         } else if (view->presentation && page == n_pages) {
5917                 view->presentation_state = EV_PRESENTATION_END;
5918                 gtk_widget_queue_draw (GTK_WIDGET (view));
5919                 return TRUE;
5920         } else if (view->dual_page && page == n_pages) {
5921                 ev_page_cache_set_current_page (view->page_cache, page - 1);
5922                 return TRUE;
5923         } else {
5924                 return FALSE;
5925         }
5926 }
5927
5928 gboolean
5929 ev_view_previous_page (EvView *view)
5930 {
5931         int page;
5932
5933         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
5934
5935         if (!view->page_cache)
5936                 return FALSE;
5937
5938         if (view->presentation &&
5939             view->presentation_state == EV_PRESENTATION_END) {
5940                 ev_view_reset_presentation_state (view);
5941                 return TRUE;
5942         }
5943
5944         if (view->presentation &&
5945             (view->presentation_state == EV_PRESENTATION_BLACK ||
5946              view->presentation_state == EV_PRESENTATION_WHITE)) {
5947                 ev_view_reset_presentation_state (view);
5948                 return FALSE;
5949         }
5950
5951         if (view->animation) {
5952                 ev_view_transition_animation_finish (view->animation, view);
5953                 return TRUE;
5954         }
5955
5956         ev_view_reset_presentation_state (view);
5957
5958         page = ev_page_cache_get_current_page (view->page_cache);
5959
5960         if (view->dual_page && !view->presentation)
5961                 page = page - 2;
5962         else
5963                 page = page - 1;
5964
5965         if (page >= 0) {
5966                 ev_page_cache_set_current_page (view->page_cache, page);
5967                 return TRUE;
5968         } else if (ev_view_get_dual_page (view) && page == -1) {
5969                 ev_page_cache_set_current_page (view->page_cache, 0);
5970                 return TRUE;
5971         } else {
5972                 return FALSE;
5973         }
5974 }
5975
5976 /*** Enum description for usage in signal ***/
5977
5978 GType
5979 ev_sizing_mode_get_type (void)
5980 {
5981   static GType etype = 0;
5982   if (etype == 0) {
5983     static const GEnumValue values[] = {
5984       { EV_SIZING_FIT_WIDTH, "EV_SIZING_FIT_WIDTH", "fit-width" },
5985       { EV_SIZING_BEST_FIT, "EV_SIZING_BEST_FIT", "best-fit" },
5986       { EV_SIZING_FREE, "EV_SIZING_FREE", "free" },
5987       { 0, NULL, NULL }
5988     };
5989     etype = g_enum_register_static ("EvSizingMode", values);
5990   }
5991   return etype;
5992 }
5993
5994 GType
5995 ev_scroll_type_get_type (void)
5996 {
5997   static GType etype = 0;
5998   if (etype == 0) {
5999     static const GEnumValue values[] = {
6000       { EV_SCROLL_PAGE_FORWARD, "EV_SCROLL_PAGE_FORWARD", "scroll-page-forward" },
6001       { EV_SCROLL_PAGE_BACKWARD, "EV_SCROLL_PAGE_BACKWARD", "scroll-page-backward" },
6002       { EV_SCROLL_STEP_FORWARD, "EV_SCROLL_STEP_FORWARD", "scroll-step-forward" },
6003       { EV_SCROLL_STEP_FORWARD, "EV_SCROLL_STEP_FORWARD", "scroll-step-forward" },
6004       { EV_SCROLL_STEP_UP, "EV_SCROLL_STEP_UP", "scroll-step-up" },
6005       { EV_SCROLL_STEP_DOWN, "EV_SCROLL_STEP_DOWN", "scroll-step-down" },
6006       { 0, NULL, NULL }
6007     };
6008     etype = g_enum_register_static ("EvScrollType", values);
6009   }
6010   return etype;
6011 }
6012
6013 void
6014 ev_view_update_view_size (EvView *view, GtkScrolledWindow * scrolled_window)
6015 {
6016         int width, height;
6017         GtkRequisition vsb_requisition;
6018         GtkRequisition hsb_requisition;
6019         int scrollbar_spacing;
6020
6021         /* Calculate the width available for the content */
6022         width  = GTK_WIDGET (scrolled_window)->allocation.width;
6023         height = GTK_WIDGET (scrolled_window)->allocation.height;
6024
6025         if (gtk_scrolled_window_get_shadow_type (scrolled_window) == GTK_SHADOW_IN
6026             && view) {
6027                 width -=  2 * GTK_WIDGET(view)->style->xthickness;
6028                 height -= 2 * GTK_WIDGET(view)->style->ythickness;
6029         }
6030
6031         gtk_widget_size_request (scrolled_window->vscrollbar, &vsb_requisition);
6032         gtk_widget_size_request (scrolled_window->hscrollbar, &hsb_requisition);
6033         gtk_widget_style_get (GTK_WIDGET (scrolled_window),
6034                               "scrollbar_spacing",
6035                               &scrollbar_spacing,
6036                               NULL);
6037
6038         if (EV_IS_VIEW(view)) {
6039                 ev_view_set_zoom_for_size (EV_VIEW (view),
6040                                            MAX (1, width),
6041                                            MAX (1, height),
6042                                            vsb_requisition.width + scrollbar_spacing,
6043                                            hsb_requisition.height + scrollbar_spacing);
6044         }
6045 }