shell/ev-view.c

   1 /* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8; c-indent-level: 8 -*- */
   2 /* this file is part of evince, a gnome document viewer
   3  *
   4  *  Copyright (C) 2004 Red Hat, Inc
   5  *
   6  * Evince is free software; you can redistribute it and/or modify it
   7  * under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * Evince is distributed in the hope that it will be useful, but
  12  * WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
  19  */
  20
  21 #include <stdlib.h>
  22 #include <math.h>
  23 #include <string.h>
  24 #include <gtk/gtkalignment.h>
  25 #include <glib/gi18n.h>
  26 #include <gtk/gtkbindings.h>
  27 #include <gtk/gtkselection.h>
  28 #include <gtk/gtkclipboard.h>
  29 #include <gdk/gdkkeysyms.h>
  30
  31 #include "ev-marshal.h"
  32 #include "ev-view.h"
  33 #include "ev-view-private.h"
  34 #include "ev-utils.h"
  35 #include "ev-selection.h"
  36 #include "ev-document-links.h"
  37 #include "ev-document-images.h"
  38 #include "ev-document-find.h"
  39 #include "ev-document-transition.h"
  40 #include "ev-document-misc.h"
  41 #include "ev-job-queue.h"
  42 #include "ev-page-cache.h"
  43 #include "ev-pixbuf-cache.h"
  44 #include "ev-tooltip.h"
  45 #include "ev-application.h"
  46
  47 #define EV_VIEW_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass), EV_TYPE_VIEW, EvViewClass))
  48 #define EV_IS_VIEW_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), EV_TYPE_VIEW))
  49 #define EV_VIEW_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj), EV_TYPE_VIEW, EvViewClass))
  50
  51
  52 enum {
  53         PROP_0,
  54         PROP_STATUS,
  55         PROP_FIND_STATUS,
  56         PROP_CONTINUOUS,
  57         PROP_DUAL_PAGE,
  58         PROP_FULLSCREEN,
  59         PROP_PRESENTATION,
  60         PROP_SIZING_MODE,
  61         PROP_ZOOM,
  62         PROP_ROTATION,
  63         PROP_HAS_SELECTION,
  64 };
  65
  66 enum {
  67         SIGNAL_BINDING_ACTIVATED,
  68         SIGNAL_ZOOM_INVALID,
  69         SIGNAL_HANDLE_LINK,
  70         SIGNAL_EXTERNAL_LINK,
  71         SIGNAL_POPUP_MENU,
  72         N_SIGNALS,
  73 };
  74
  75 enum {
  76         TARGET_DND_URI,
  77         TARGET_DND_TEXT,
  78         TARGET_DND_IMAGE
  79 };
  80
  81 enum {
  82         TARGET_STRING,
  83         TARGET_TEXT,
  84         TARGET_COMPOUND_TEXT,
  85         TARGET_UTF8_STRING,
  86         TARGET_TEXT_BUFFER_CONTENTS
  87 };
  88
  89 static const GtkTargetEntry clipboard_targets[] = {
  90         { "STRING", 0, TARGET_STRING },
  91         { "TEXT",   0, TARGET_TEXT },
  92         { "COMPOUND_TEXT", 0, TARGET_COMPOUND_TEXT },
  93         { "UTF8_STRING", 0, TARGET_UTF8_STRING },
  94 };
  95
  96 static const GtkTargetEntry view_drop_targets[] = {
  97         { "text/uri-list", 0, 0 }
  98 };
  99
 100 static guint signals[N_SIGNALS];
 101
 102 typedef enum {
 103         EV_VIEW_FIND_NEXT,
 104         EV_VIEW_FIND_PREV
 105 } EvViewFindDirection;
 106
 107 #define ZOOM_IN_FACTOR  1.2
 108 #define ZOOM_OUT_FACTOR (1.0/ZOOM_IN_FACTOR)
 109
 110 #define MIN_SCALE 0.05409
 111 #define MAX_SCALE 4.0
 112
 113 #define SCROLL_TIME 150
 114
 115 /*** Scrolling ***/
 116 static void       scroll_to_current_page                     (EvView *view,
 117                                                               GtkOrientation orientation);
 118 static void       ev_view_set_scroll_adjustments             (EvView             *view,
 119                                                               GtkAdjustment      *hadjustment,
 120                                                               GtkAdjustment      *vadjustment);
 121 static void       view_update_range_and_current_page         (EvView             *view);
 122 static void       set_scroll_adjustment                      (EvView             *view,
 123                                                               GtkOrientation      orientation,
 124                                                               GtkAdjustment      *adjustment);
 125 static void       add_scroll_binding_keypad                  (GtkBindingSet      *binding_set,
 126                                                               guint               keyval,
 127                                                               GdkModifierType modifiers,
 128                                                               EvScrollType       scroll,
 129                                                               gboolean            horizontal);
 130 static void       ensure_rectangle_is_visible                (EvView             *view,
 131                                                               GdkRectangle       *rect);
 132
 133 /*** Geometry computations ***/
 134 static void       compute_border                             (EvView             *view,
 135                                                               int                 width,
 136                                                               int                 height,
 137                                                               GtkBorder          *border);
 138 static void       get_page_y_offset                          (EvView *view,
 139                                                               int page,
 140                                                               double zoom,
 141                                                               int *y_offset);
 142 static gboolean   get_page_extents                           (EvView             *view,
 143                                                               gint                page,
 144                                                               GdkRectangle       *page_area,
 145                                                               GtkBorder          *border);
 146 static void       view_rect_to_doc_rect                      (EvView             *view,
 147                                                               GdkRectangle       *view_rect,
 148                                                               GdkRectangle       *page_area,
 149                                                               EvRectangle        *doc_rect);
 150 static void       doc_rect_to_view_rect                      (EvView             *view,
 151                                                               int                 page,
 152                                                               EvRectangle        *doc_rect,
 153                                                               GdkRectangle       *view_rect);
 154 static void       find_page_at_location                      (EvView             *view,
 155                                                               gdouble             x,
 156                                                               gdouble             y,
 157                                                               gint               *page,
 158                                                               gint               *x_offset,
 159                                                               gint               *y_offset);
 160 static gboolean  doc_point_to_view_point                     (EvView       *view,
 161                                                               int           page,
 162                                                               EvPoint      *doc_point,
 163                                                               GdkPoint     *view_point);
 164 /*** Hyperrefs ***/
 165 static EvLink *   ev_view_get_link_at_location               (EvView  *view,
 166                                                               gdouble  x,
 167                                                               gdouble  y);
 168 static char*      tip_from_link                              (EvView             *view,
 169                                                               EvLink             *link);
 170 static void       handle_link_over_xy                        (EvView *view,
 171                                                               gint x,
 172                                                               gint y);
 173 /*** GtkWidget implementation ***/
 174 static void       ev_view_size_request_continuous_dual_page  (EvView             *view,
 175                                                               GtkRequisition     *requisition);
 176 static void       ev_view_size_request_continuous            (EvView             *view,
 177                                                               GtkRequisition     *requisition);
 178 static void       ev_view_size_request_dual_page             (EvView             *view,
 179                                                               GtkRequisition     *requisition);
 180 static void       ev_view_size_request_single_page           (EvView             *view,
 181                                                               GtkRequisition     *requisition);
 182 static void       ev_view_size_request                       (GtkWidget          *widget,
 183                                                               GtkRequisition     *requisition);
 184 static void       ev_view_size_allocate                      (GtkWidget          *widget,
 185                                                               GtkAllocation      *allocation);
 186 static void       ev_view_realize                            (GtkWidget          *widget);
 187 static gboolean   ev_view_scroll_event                       (GtkWidget          *widget,
 188                                                               GdkEventScroll     *event);
 189 static gboolean   ev_view_expose_event                       (GtkWidget          *widget,
 190                                                               GdkEventExpose     *event);
 191 static gboolean   ev_view_popup_menu                         (GtkWidget          *widget);
 192 static gboolean   ev_view_button_press_event                 (GtkWidget          *widget,
 193                                                               GdkEventButton     *event);
 194 static gboolean   ev_view_motion_notify_event                (GtkWidget          *widget,
 195                                                               GdkEventMotion     *event);
 196 static gboolean   ev_view_button_release_event               (GtkWidget          *widget,
 197                                                               GdkEventButton     *event);
 198 static gboolean   ev_view_enter_notify_event                 (GtkWidget          *widget,
 199                                                               GdkEventCrossing   *event);
 200 static gboolean   ev_view_leave_notify_event                 (GtkWidget          *widget,
 201                                                               GdkEventCrossing   *event);
 202 static void       ev_view_style_set                          (GtkWidget          *widget,
 203                                                               GtkStyle           *old_style);
 204
 205 static AtkObject *ev_view_get_accessible                     (GtkWidget *widget);
 206
 207 /*** Drawing ***/
 208 static guint32    ev_gdk_color_to_rgb                        (const GdkColor     *color);
 209 static void       draw_rubberband                            (GtkWidget          *widget,
 210                                                               GdkWindow          *window,
 211                                                               const GdkRectangle *rect,
 212                                                               guchar              alpha);
 213 static void       highlight_find_results                     (EvView             *view,
 214                                                               int                 page);
 215 static void       draw_one_page                              (EvView             *view,
 216                                                               gint                page,
 217                                                               GdkRectangle       *page_area,
 218                                                               GtkBorder          *border,
 219                                                               GdkRectangle       *expose_area,
 220                                                               gboolean           *page_ready);
 221 static void       draw_loading_text                          (EvView             *view,
 222                                                               GdkRectangle       *page_area,
 223                                                               GdkRectangle       *expose_area);
 224
 225 /*** Callbacks ***/
 226 static void       find_changed_cb                            (EvDocument         *document,
 227                                                               int                 page,
 228                                                               EvView             *view);
 229 static void       job_finished_cb                            (EvPixbufCache      *pixbuf_cache,
 230                                                               EvView             *view);
 231 static void       page_changed_cb                            (EvPageCache        *page_cache,
 232                                                               int                 new_page,
 233                                                               EvView             *view);
 234 static void       on_adjustment_value_changed                (GtkAdjustment      *adjustment,
 235                                                               EvView             *view);
 236
 237 /*** GObject ***/
 238 static void       ev_view_finalize                           (GObject            *object);
 239 static void       ev_view_destroy                            (GtkObject          *object);
 240 static void       ev_view_set_property                       (GObject            *object,
 241                                                               guint               prop_id,
 242                                                               const GValue       *value,
 243                                                               GParamSpec         *pspec);
 244 static void       ev_view_get_property                       (GObject            *object,
 245                                                               guint               prop_id,
 246                                                               GValue             *value,
 247                                                               GParamSpec         *pspec);
 248 static void       ev_view_class_init                         (EvViewClass        *class);
 249 static void       ev_view_init                               (EvView             *view);
 250
 251 /*** Zoom and sizing ***/
 252 static double   zoom_for_size_fit_width                      (int doc_width,
 253                                                               int doc_height,
 254                                                               int target_width,
 255                                                               int target_height,
 256                                                               int vsb_width);
 257 static double   zoom_for_size_fit_height                     (int doc_width,
 258                                                               int doc_height,
 259                                                               int target_width,
 260                                                               int target_height,
 261                                                               int vsb_height);
 262 static double   zoom_for_size_best_fit                       (int doc_width,
 263                                                               int doc_height,
 264                                                               int target_width,
 265                                                               int target_height,
 266                                                               int vsb_width,
 267                                                               int hsb_width);
 268 static void     ev_view_zoom_for_size_presentation           (EvView *view,
 269                                                               int     width,
 270                                                               int     height);
 271 static void     ev_view_zoom_for_size_continuous_and_dual_page (EvView *view,
 272                                                                 int     width,
 273                                                                 int     height,
 274                                                                 int     vsb_width,
 275                                                                 int     hsb_height);
 276 static void     ev_view_zoom_for_size_continuous               (EvView *view,
 277                                                                 int     width,
 278                                                                 int     height,
 279                                                                 int     vsb_width,
 280                                                                 int     hsb_height);
 281 static void     ev_view_zoom_for_size_dual_page                (EvView *view,
 282                                                                 int     width,
 283                                                                 int     height,
 284                                                                 int     vsb_width,
 285                                                                 int     hsb_height);
 286 static void     ev_view_zoom_for_size_single_page              (EvView *view,
 287                                                                 int     width,
 288                                                                 int     height,
 289                                                                 int     vsb_width,
 290                                                                 int     hsb_height);
 291 /*** Cursors ***/
 292 static GdkCursor* ev_view_create_invisible_cursor            (void);
 293 static void       ev_view_set_cursor                         (EvView             *view,
 294                                                               EvViewCursor        new_cursor);
 295
 296 /*** Status messages ***/
 297 static void       ev_view_set_status                         (EvView             *view,
 298                                                               const char         *message);
 299 static void       update_find_status_message                 (EvView             *view,
 300                                                               gboolean            this_page);
 301 static void       ev_view_set_find_status                    (EvView             *view,
 302                                                               const char         *message);
 303 /*** Find ***/
 304 static void       jump_to_find_result                        (EvView             *view);
 305 static void       jump_to_find_page                          (EvView             *view,
 306                                                               EvViewFindDirection direction,
 307                                                               gint                shift);
 308
 309 /*** Selection ***/
 310 static void       compute_selections                         (EvView             *view,
 311                                                               GdkPoint           *start,
 312                                                               GdkPoint           *stop);
 313 static void       clear_selection                            (EvView             *view);
 314 static void       selection_free                             (EvViewSelection    *selection);
 315 static char*      get_selected_text                          (EvView             *ev_view);
 316 static void       ev_view_primary_get_cb                     (GtkClipboard       *clipboard,
 317                                                               GtkSelectionData   *selection_data,
 318                                                               guint               info,
 319                                                               gpointer            data);
 320 static void       ev_view_primary_clear_cb                   (GtkClipboard       *clipboard,
 321                                                               gpointer            data);
 322 static void       ev_view_update_primary_selection           (EvView             *ev_view);
 323
 324 /*** Presentation ***/
 325 static void       ev_view_presentation_transition_start      (EvView             *ev_view);
 326 static void       ev_view_presentation_transition_stop       (EvView             *ev_view);
 327
 328
 329 G_DEFINE_TYPE (EvView, ev_view, GTK_TYPE_WIDGET)
 330
 331 static void
 332 scroll_to_current_page (EvView *view, GtkOrientation orientation)
 333 {
 334         GdkPoint view_point;
 335
 336         if (view->document == NULL) {
 337                 return;
 338         }
 339
 340         doc_point_to_view_point (view, view->current_page, &view->pending_point, &view_point);
 341
 342         if (orientation == GTK_ORIENTATION_VERTICAL) {
 343                 view->pending_point.y = 0;
 344         } else {
 345                 view->pending_point.x = 0;
 346         }
 347
 348         if (orientation == GTK_ORIENTATION_VERTICAL) {
 349                 if (view->continuous) {
 350                         gtk_adjustment_clamp_page (view->vadjustment,
 351                                                    view_point.y - view->spacing / 2,
 352                                                    view_point.y + view->vadjustment->page_size);
 353                 } else {
 354                         gtk_adjustment_set_value (view->vadjustment,
 355                                                   CLAMP (view_point.y,
 356                                                   view->vadjustment->lower,
 357                                                   view->vadjustment->upper -
 358                                                   view->vadjustment->page_size));
 359                 }
 360         } else {
 361                 if (view->dual_page) {
 362                         gtk_adjustment_clamp_page (view->hadjustment,
 363                                                    view_point.x,
 364                                                    view_point.x + view->hadjustment->page_size);
 365                 } else {
 366                         gtk_adjustment_set_value (view->hadjustment,
 367                                                   CLAMP (view_point.x,
 368                                                   view->hadjustment->lower,
 369                                                   view->hadjustment->upper -
 370                                                   view->hadjustment->page_size));
 371                 }
 372         }
 373 }
 374
 375 static void
 376 view_set_adjustment_values (EvView         *view,
 377                             GtkOrientation  orientation)
 378 {
 379         GtkWidget *widget = GTK_WIDGET (view);
 380         GtkAdjustment *adjustment;
 381         int requisition;
 382         int allocation;
 383
 384         double factor;
 385         gint new_value;
 386
 387         if (orientation == GTK_ORIENTATION_HORIZONTAL)  {
 388                 requisition = widget->requisition.width;
 389                 allocation = widget->allocation.width;
 390                 adjustment = view->hadjustment;
 391         } else {
 392                 requisition = widget->requisition.height;
 393                 allocation = widget->allocation.height;
 394                 adjustment = view->vadjustment;
 395         }
 396
 397         if (!adjustment)
 398                 return;
 399
 400         factor = 1.0;
 401         switch (view->pending_scroll) {
 402                 case SCROLL_TO_KEEP_POSITION:
 403                 case SCROLL_TO_FIND_LOCATION:
 404                         factor = (adjustment->value) / adjustment->upper;
 405                         break;
 406                 case SCROLL_TO_PAGE_POSITION:
 407                         break;
 408                 case SCROLL_TO_CENTER:
 409                         factor = (adjustment->value + adjustment->page_size * 0.5) / adjustment->upper;
 410                         break;
 411         }
 412
 413         adjustment->page_size = allocation;
 414         adjustment->step_increment = allocation * 0.1;
 415         adjustment->page_increment = allocation * 0.9;
 416         adjustment->lower = 0;
 417         adjustment->upper = MAX (allocation, requisition);
 418
 419         /*
 420          * We add 0.5 to the values before to average out our rounding errors.
 421          */
 422         switch (view->pending_scroll) {
 423                 case SCROLL_TO_KEEP_POSITION:
 424                 case SCROLL_TO_FIND_LOCATION:
 425                         new_value = CLAMP (adjustment->upper * factor + 0.5, 0, adjustment->upper - adjustment->page_size);
 426                         gtk_adjustment_set_value (adjustment, (int)new_value);
 427                         break;
 428                 case SCROLL_TO_PAGE_POSITION:
 429                         scroll_to_current_page (view, orientation);
 430                         break;
 431                 case SCROLL_TO_CENTER:
 432                         new_value = CLAMP (adjustment->upper * factor - adjustment->page_size * 0.5 + 0.5,
 433                                            0, adjustment->upper - adjustment->page_size);
 434                         gtk_adjustment_set_value (adjustment, (int)new_value);
 435                         break;
 436         }
 437
 438         gtk_adjustment_changed (adjustment);
 439 }
 440
 441 static void
 442 view_update_range_and_current_page (EvView *view)
 443 {
 444         gint current_page;
 445         gint best_current_page = -1;
 446
 447         /* Presentation trumps all other modes */
 448         if (view->presentation) {
 449                 view->start_page = view->current_page;
 450                 view->end_page = view->current_page;
 451         } else if (view->continuous) {
 452                 GdkRectangle current_area, unused, page_area;
 453                 GtkBorder border;
 454                 gboolean found = FALSE;
 455                 gint area_max = -1, area;
 456                 int i;
 457
 458                 if (!(view->vadjustment && view->hadjustment))
 459                         return;
 460
 461                 current_area.x = view->hadjustment->value;
 462                 current_area.width = view->hadjustment->upper;
 463                 current_area.y = view->vadjustment->value;
 464                 current_area.height = view->vadjustment->page_size;
 465
 466                 for (i = 0; i < ev_page_cache_get_n_pages (view->page_cache); i++) {
 467
 468                         get_page_extents (view, i, &page_area, &border);
 469
 470                         if (gdk_rectangle_intersect (&current_area, &page_area, &unused)) {
 471                                 area = unused.width * unused.height;
 472
 473                                 if (!found) {
 474                                         area_max = area;
 475                                         view->start_page = i;
 476                                         found = TRUE;
 477                                         best_current_page = i;
 478                                 }
 479                                 if (area > area_max) {
 480                                         best_current_page = (area == area_max) ? MIN (i, best_current_page) : i;
 481                                         area_max = area;
 482                                 }
 483
 484                                 view->end_page = i;
 485                         } else if (found) {
 486                                 break;
 487                         }
 488                 }
 489
 490         } else if (view->dual_page) {
 491                 if (view->current_page % 2 == ev_page_cache_get_dual_even_left (view->page_cache)) {
 492                         view->start_page = view->current_page;
 493                         if (view->current_page + 1 < ev_page_cache_get_n_pages (view->page_cache))
 494                                 view->end_page = view->start_page + 1;
 495                         else
 496                                 view->end_page = view->start_page;
 497                 } else {
 498                         if (view->current_page < 1)
 499                                 view->start_page = view->current_page;
 500                         else
 501                                 view->start_page = view->current_page - 1;
 502                         view->end_page = view->current_page;
 503                 }
 504         } else {
 505                 view->start_page = view->current_page;
 506                 view->end_page = view->current_page;
 507         }
 508
 509         best_current_page = MAX (best_current_page, view->start_page);
 510         current_page = ev_page_cache_get_current_page (view->page_cache);
 511
 512         if ((current_page != best_current_page) && (view->pending_scroll == SCROLL_TO_KEEP_POSITION)) {
 513                 view->current_page = best_current_page;
 514                 ev_page_cache_set_current_page (view->page_cache, best_current_page);
 515         }
 516
 517         ev_pixbuf_cache_set_page_range (view->pixbuf_cache,
 518                                         view->start_page,
 519                                         view->end_page,
 520                                         view->rotation,
 521                                         view->scale,
 522                                         view->selection_info.selections);
 523 }
 524
 525 static void
 526 set_scroll_adjustment (EvView *view,
 527                        GtkOrientation  orientation,
 528                        GtkAdjustment  *adjustment)
 529 {
 530         GtkAdjustment **to_set;
 531
 532         if (orientation == GTK_ORIENTATION_HORIZONTAL)
 533                 to_set = &view->hadjustment;
 534         else
 535                 to_set = &view->vadjustment;
 536
 537         if (*to_set != adjustment) {
 538                 if (*to_set) {
 539                         g_signal_handlers_disconnect_by_func (*to_set,
 540                                                               (gpointer) on_adjustment_value_changed,
 541                                                               view);
 542                         g_object_unref (*to_set);
 543                 }
 544
 545                 *to_set = adjustment;
 546                 view_set_adjustment_values (view, orientation);
 547
 548                 if (*to_set) {
 549                         g_object_ref (*to_set);
 550                         g_signal_connect (*to_set, "value_changed",
 551                                           G_CALLBACK (on_adjustment_value_changed), view);
 552                 }
 553         }
 554 }
 555
 556 static void
 557 ev_view_set_scroll_adjustments (EvView *view,
 558                                 GtkAdjustment  *hadjustment,
 559                                 GtkAdjustment  *vadjustment)
 560 {
 561         set_scroll_adjustment (view, GTK_ORIENTATION_HORIZONTAL, hadjustment);
 562         set_scroll_adjustment (view, GTK_ORIENTATION_VERTICAL, vadjustment);
 563
 564         on_adjustment_value_changed (NULL, view);
 565 }
 566
 567 static void
 568 add_scroll_binding_keypad (GtkBindingSet  *binding_set,
 569                            guint           keyval,
 570                            GdkModifierType modifiers,
 571                            EvScrollType    scroll,
 572                            gboolean        horizontal)
 573 {
 574   guint keypad_keyval = keyval - GDK_Left + GDK_KP_Left;
 575
 576   gtk_binding_entry_add_signal (binding_set, keyval, modifiers,
 577                                 "binding_activated", 2,
 578                                 EV_TYPE_SCROLL_TYPE, scroll,
 579                                 G_TYPE_BOOLEAN, horizontal);
 580   gtk_binding_entry_add_signal (binding_set, keypad_keyval, modifiers,
 581                                 "binding_activated", 2,
 582                                 EV_TYPE_SCROLL_TYPE, scroll,
 583                                 G_TYPE_BOOLEAN, horizontal);
 584 }
 585
 586 void
 587 ev_view_scroll (EvView        *view,
 588                 EvScrollType   scroll,
 589                 gboolean horizontal)
 590 {
 591         GtkAdjustment *adjustment;
 592         double value, increment;
 593         gboolean first_page = FALSE;
 594         gboolean last_page = FALSE;
 595
 596         view->jump_to_find_result = FALSE;
 597
 598         if (view->presentation || view->sizing_mode == EV_SIZING_BEST_FIT) {
 599                 switch (scroll) {
 600                         case EV_SCROLL_PAGE_BACKWARD:
 601                         case EV_SCROLL_STEP_BACKWARD:
 602                                 ev_view_previous_page (view);
 603                                 break;
 604                         case EV_SCROLL_PAGE_FORWARD:
 605                         case EV_SCROLL_STEP_FORWARD:
 606                                 ev_view_next_page (view);
 607                                 break;
 608                         default:
 609                                 break;
 610                 }
 611                 return;
 612         }
 613
 614         /* Assign values for increment and vertical adjustment */
 615         adjustment = horizontal ? view->hadjustment : view->vadjustment;
 616         increment = adjustment->page_size * 0.75;
 617         value = adjustment->value;
 618
 619         /* Assign boolean for first and last page */
 620         if (view->current_page == 0)
 621                 first_page = TRUE;
 622         if (view->current_page == ev_page_cache_get_n_pages (view->page_cache) - 1)
 623                 last_page = TRUE;
 624
 625         switch (scroll) {
 626                 case EV_SCROLL_PAGE_BACKWARD:
 627                         /* Do not jump backwards if at the first page */
 628                         if (value == (adjustment->lower) && first_page) {
 629                                 /* Do nothing */
 630                                 /* At the top of a page, assign the upper bound limit of previous page */
 631                         } else if (value == (adjustment->lower)) {
 632                                 value = adjustment->upper - adjustment->page_size;
 633                                 ev_view_previous_page (view);
 634                                 /* Jump to the top */
 635                         } else {
 636                                 value = MAX (value - increment, adjustment->lower);
 637                         }
 638                         break;
 639                 case EV_SCROLL_PAGE_FORWARD:
 640                         /* Do not jump forward if at the last page */
 641                         if (value == (adjustment->upper - adjustment->page_size) && last_page) {
 642                                 /* Do nothing */
 643                         /* At the bottom of a page, assign the lower bound limit of next page */
 644                         } else if (value == (adjustment->upper - adjustment->page_size)) {
 645                                 value = 0;
 646                                 ev_view_next_page (view);
 647                         /* Jump to the bottom */
 648                         } else {
 649                                 value = MIN (value + increment, adjustment->upper - adjustment->page_size);
 650                         }
 651                         break;
 652                 case EV_SCROLL_STEP_BACKWARD:
 653                         value -= adjustment->step_increment;
 654                         break;
 655                 case EV_SCROLL_STEP_FORWARD:
 656                         value += adjustment->step_increment;
 657                         break;
 658                 case EV_SCROLL_STEP_DOWN:
 659                         value -= adjustment->step_increment / 10;
 660                         break;
 661                 case EV_SCROLL_STEP_UP:
 662                         value += adjustment->step_increment / 10;
 663                         break;
 664                 default:
 665                         break;
 666         }
 667
 668         value = CLAMP (value, adjustment->lower,
 669                        adjustment->upper - adjustment->page_size);
 670
 671         gtk_adjustment_set_value (adjustment, value);
 672 }
 673
 674 #define MARGIN 5
 675
 676 static void
 677 ensure_rectangle_is_visible (EvView *view, GdkRectangle *rect)
 678 {
 679         GtkWidget *widget = GTK_WIDGET (view);
 680         GtkAdjustment *adjustment;
 681         int value;
 682
 683         view->pending_scroll = SCROLL_TO_FIND_LOCATION;
 684
 685         adjustment = view->vadjustment;
 686
 687         if (rect->y < adjustment->value) {
 688                 value = MAX (adjustment->lower, rect->y - MARGIN);
 689                 gtk_adjustment_set_value (view->vadjustment, value);
 690         } else if (rect->y + rect->height >
 691                    adjustment->value + widget->allocation.height) {
 692                 value = MIN (adjustment->upper, rect->y + rect->height -
 693                              widget->allocation.height + MARGIN);
 694                 gtk_adjustment_set_value (view->vadjustment, value);
 695         }
 696
 697         adjustment = view->hadjustment;
 698
 699         if (rect->x < adjustment->value) {
 700                 value = MAX (adjustment->lower, rect->x - MARGIN);
 701                 gtk_adjustment_set_value (view->hadjustment, value);
 702         } else if (rect->x + rect->height >
 703                    adjustment->value + widget->allocation.width) {
 704                 value = MIN (adjustment->upper, rect->x + rect->width -
 705                              widget->allocation.width + MARGIN);
 706                 gtk_adjustment_set_value (view->hadjustment, value);
 707         }
 708
 709         gtk_widget_queue_resize (GTK_WIDGET (view));
 710 }
 711
 712 /*** Geometry computations ***/
 713
 714 static void
 715 compute_border (EvView *view, int width, int height, GtkBorder *border)
 716 {
 717         if (view->presentation) {
 718                 border->left = 0;
 719                 border->right = 0;
 720                 border->top = 0;
 721                 border->bottom = 0;
 722         } else {
 723                 ev_document_misc_get_page_border_size (width, height, border);
 724         }
 725 }
 726
 727 static void
 728 get_page_y_offset (EvView *view, int page, double zoom, int *y_offset)
 729 {
 730         int max_width, offset;
 731         GtkBorder border;
 732
 733         g_return_if_fail (y_offset != NULL);
 734
 735         ev_page_cache_get_max_width (view->page_cache, view->rotation, zoom, &max_width);
 736
 737         compute_border (view, max_width, max_width, &border);
 738
 739         if (view->dual_page) {
 740                 ev_page_cache_get_height_to_page (view->page_cache, page,
 741                                                   view->rotation, zoom, NULL, &offset);
 742                 offset += ((page + ev_page_cache_get_dual_even_left (view->page_cache)) / 2 + 1) * view->spacing + ((page + ev_page_cache_get_dual_even_left (view->page_cache)) / 2 ) * (border.top + border.bottom);
 743         } else {
 744                 ev_page_cache_get_height_to_page (view->page_cache, page,
 745                                                   view->rotation, zoom, &offset, NULL);
 746                 offset += (page + 1) * view->spacing + page * (border.top + border.bottom);
 747         }
 748
 749         *y_offset = offset;
 750         return;
 751 }
 752
 753 static gboolean
 754 get_page_extents (EvView       *view,
 755                   gint          page,
 756                   GdkRectangle *page_area,
 757                   GtkBorder    *border)
 758 {
 759         GtkWidget *widget;
 760         int width, height;
 761
 762         widget = GTK_WIDGET (view);
 763
 764         /* Get the size of the page */
 765         ev_page_cache_get_size (view->page_cache, page,
 766                                 view->rotation,
 767                                 view->scale,
 768                                 &width, &height);
 769         compute_border (view, width, height, border);
 770         page_area->width = width + border->left + border->right;
 771         page_area->height = height + border->top + border->bottom;
 772
 773         if (view->presentation) {
 774                 page_area->x = (MAX (0, widget->allocation.width - width))/2;
 775                 page_area->y = (MAX (0, widget->allocation.height - height))/2;
 776         } else if (view->continuous) {
 777                 gint max_width;
 778                 gint x, y;
 779
 780                 ev_page_cache_get_max_width (view->page_cache, view->rotation,
 781                                              view->scale, &max_width);
 782                 max_width = max_width + border->left + border->right;
 783                 /* Get the location of the bounding box */
 784                 if (view->dual_page) {
 785                         x = view->spacing + ((page % 2 == ev_page_cache_get_dual_even_left (view->page_cache)) ? 0 : 1) * (max_width + view->spacing);
 786                         x = x + MAX (0, widget->allocation.width - (max_width * 2 + view->spacing * 3)) / 2;
 787                         if (page % 2 == ev_page_cache_get_dual_even_left (view->page_cache))
 788                                 x = x + (max_width - width - border->left - border->right);
 789                 } else {
 790                         x = view->spacing;
 791                         x = x + MAX (0, widget->allocation.width - (width + view->spacing * 2)) / 2;
 792                 }
 793
 794                 get_page_y_offset (view, page, view->scale, &y);
 795
 796                 page_area->x = x;
 797                 page_area->y = y;
 798         } else {
 799                 gint x, y;
 800                 if (view->dual_page) {
 801                         gint width_2, height_2;
 802                         gint max_width = width;
 803                         gint max_height = height;
 804                         GtkBorder overall_border;
 805                         gint other_page;
 806
 807                         other_page = (page % 2 == ev_page_cache_get_dual_even_left (view->page_cache)) ? page + 1: page - 1;
 808
 809                         /* First, we get the bounding box of the two pages */
 810                         if (other_page < ev_page_cache_get_n_pages (view->page_cache)
 811                             && (0 <= other_page)) {
 812                                 ev_page_cache_get_size (view->page_cache,
 813                                                         other_page,
 814                                                         view->rotation,
 815                                                         view->scale,
 816                                                         &width_2, &height_2);
 817                                 if (width_2 > width)
 818                                         max_width = width_2;
 819                                 if (height_2 > height)
 820                                         max_height = height_2;
 821                         }
 822                         compute_border (view, max_width, max_height, &overall_border);
 823
 824                         /* Find the offsets */
 825                         x = view->spacing;
 826                         y = view->spacing;
 827
 828                         /* Adjust for being the left or right page */
 829                         if (page % 2 == ev_page_cache_get_dual_even_left (view->page_cache))
 830                                 x = x + max_width - width;
 831                         else
 832                                 x = x + (max_width + overall_border.left + overall_border.right) + view->spacing;
 833
 834                         y = y + (max_height - height)/2;
 835
 836                         /* Adjust for extra allocation */
 837                         x = x + MAX (0, widget->allocation.width -
 838                                      ((max_width + overall_border.left + overall_border.right) * 2 + view->spacing * 3))/2;
 839                         y = y + MAX (0, widget->allocation.height - (height + view->spacing * 2))/2;
 840                 } else {
 841                         x = view->spacing;
 842                         y = view->spacing;
 843
 844                         /* Adjust for extra allocation */
 845                         x = x + MAX (0, widget->allocation.width - (width + border->left + border->right + view->spacing * 2))/2;
 846                         y = y + MAX (0, widget->allocation.height - (height + border->top + border->bottom +  view->spacing * 2))/2;
 847                 }
 848
 849                 page_area->x = x;
 850                 page_area->y = y;
 851         }
 852
 853         return TRUE;
 854 }
 855
 856 static void
 857 view_point_to_doc_point (EvView *view,
 858                          GdkPoint *view_point,
 859                          GdkRectangle *page_area,
 860                          double  *doc_point_x,
 861                          double  *doc_point_y)
 862 {
 863         *doc_point_x = (double) (view_point->x - page_area->x) / view->scale;
 864         *doc_point_y = (double) (view_point->y - page_area->y) / view->scale;
 865 }
 866
 867 static void
 868 view_rect_to_doc_rect (EvView *view,
 869                        GdkRectangle *view_rect,
 870                        GdkRectangle *page_area,
 871                        EvRectangle  *doc_rect)
 872 {
 873         doc_rect->x1 = (double) (view_rect->x - page_area->x) / view->scale;
 874         doc_rect->y1 = (double) (view_rect->y - page_area->y) / view->scale;
 875         doc_rect->x2 = doc_rect->x1 + (double) view_rect->width / view->scale;
 876         doc_rect->y2 = doc_rect->y1 + (double) view_rect->height / view->scale;
 877 }
 878
 879 static gboolean
 880 doc_point_to_view_point (EvView       *view,
 881                          int           page,
 882                          EvPoint      *doc_point,
 883                          GdkPoint     *view_point)
 884 {
 885         GdkRectangle page_area;
 886         GtkBorder border;
 887         double x, y, view_x, view_y;
 888         int width, height;
 889
 890         ev_page_cache_get_size (view->page_cache, page,
 891                                 view->rotation,
 892                                 1.0,
 893                                 &width, &height);
 894
 895         if (view->rotation == 0) {
 896                 x = doc_point->x;
 897                 y = doc_point->y;
 898         } else if (view->rotation == 90) {
 899                 x = width - doc_point->y;
 900                 y = doc_point->x;
 901         } else if (view->rotation == 180) {
 902                 x = width - doc_point->x;
 903                 y = height - doc_point->y;
 904         } else if (view->rotation == 270) {
 905                 x = doc_point->y;
 906                 y = height - doc_point->x;
 907         } else {
 908                 g_assert_not_reached ();
 909         }
 910
 911         get_page_extents (view, page, &page_area, &border);
 912
 913         view_x = x * view->scale;
 914         view_y = y * view->scale;
 915         view_point->x = view_x + page_area.x;
 916         view_point->y = view_y + page_area.y;
 917
 918         return (view_x > 0 && view_x <= page_area.width &&
 919                 view_y > 0 && view_y <= page_area.height);
 920 }
 921
 922 static void
 923 doc_rect_to_view_rect (EvView       *view,
 924                        int           page,
 925                        EvRectangle  *doc_rect,
 926                        GdkRectangle *view_rect)
 927 {
 928         GdkRectangle page_area;
 929         GtkBorder border;
 930         double x, y, w, h;
 931         int width, height;
 932
 933         ev_page_cache_get_size (view->page_cache, page,
 934                                 view->rotation,
 935                                 1.0,
 936                                 &width, &height);
 937
 938         if (view->rotation == 0) {
 939                 x = doc_rect->x1;
 940                 y = doc_rect->y1;
 941                 w = doc_rect->x2 - doc_rect->x1;
 942                 h = doc_rect->y2 - doc_rect->y1;
 943         } else if (view->rotation == 90) {
 944                 x = width - doc_rect->y2;
 945                 y = doc_rect->x1;
 946                 w = doc_rect->y2 - doc_rect->y1;
 947                 h = doc_rect->x2 - doc_rect->x1;
 948         } else if (view->rotation == 180) {
 949                 x = width - doc_rect->x2;
 950                 y = height - doc_rect->y2;
 951                 w = doc_rect->x2 - doc_rect->x1;
 952                 h = doc_rect->y2 - doc_rect->y1;
 953         } else if (view->rotation == 270) {
 954                 x = doc_rect->y1;
 955                 y = height - doc_rect->x2;
 956                 w = doc_rect->y2 - doc_rect->y1;
 957                 h = doc_rect->x2 - doc_rect->x1;
 958         } else {
 959                 g_assert_not_reached ();
 960         }
 961
 962         get_page_extents (view, page, &page_area, &border);
 963
 964         view_rect->x = x * view->scale + page_area.x;
 965         view_rect->y = y * view->scale + page_area.y;
 966         view_rect->width = w * view->scale;
 967         view_rect->height = h * view->scale;
 968 }
 969
 970 static void
 971 find_page_at_location (EvView  *view,
 972                        gdouble  x,
 973                        gdouble  y,
 974                        gint    *page,
 975                        gint    *x_offset,
 976                        gint    *y_offset)
 977 {
 978         int i;
 979
 980         if (view->document == NULL)
 981                 return;
 982
 983         g_assert (page);
 984         g_assert (x_offset);
 985         g_assert (y_offset);
 986
 987         for (i = view->start_page; i <= view->end_page; i++) {
 988                 GdkRectangle page_area;
 989                 GtkBorder border;
 990
 991                 if (! get_page_extents (view, i, &page_area, &border))
 992                         continue;
 993
 994                 if ((x >= page_area.x + border.left) &&
 995                     (x < page_area.x + page_area.width - border.right) &&
 996                     (y >= page_area.y + border.top) &&
 997                     (y < page_area.y + page_area.height - border.bottom)) {
 998                         *page = i;
 999                         *x_offset = x - (page_area.x + border.left);
1000                         *y_offset = y - (page_area.y + border.top);
1001                         return;
1002                 }
1003         }
1004
1005         *page = -1;
1006 }
1007
1008 static gboolean
1009 location_in_text (EvView  *view,
1010                   gdouble  x,
1011                   gdouble  y)
1012 {
1013         GdkRegion *region;
1014         gint page = -1;
1015         gint x_offset = 0, y_offset = 0;
1016
1017         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1018
1019         if (page == -1)
1020                 return FALSE;
1021
1022         region = ev_pixbuf_cache_get_text_mapping (view->pixbuf_cache, page);
1023
1024         if (region)
1025                 return gdk_region_point_in (region, x_offset / view->scale, y_offset / view->scale);
1026         else
1027                 return FALSE;
1028 }
1029
1030 static int
1031 ev_view_get_width (EvView *view)
1032 {
1033         return GTK_WIDGET (view)->allocation.width;
1034 }
1035
1036 static int
1037 ev_view_get_height (EvView *view)
1038 {
1039         return GTK_WIDGET (view)->allocation.height;
1040 }
1041
1042 static gboolean
1043 location_in_selected_text (EvView  *view,
1044                            gdouble  x,
1045                            gdouble  y)
1046 {
1047         gint page = -1;
1048         gint x_offset = 0, y_offset = 0;
1049         EvViewSelection *selection;
1050         GList *l = NULL;
1051
1052         for (l = view->selection_info.selections; l != NULL; l = l->next) {
1053                 selection = (EvViewSelection *)l->data;
1054
1055                 find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1056
1057                 if (page != selection->page)
1058                         continue;
1059
1060                 if (selection->covered_region &&
1061                     gdk_region_point_in (selection->covered_region, x_offset, y_offset))
1062                         return TRUE;
1063         }
1064
1065         return FALSE;
1066 }
1067
1068 static gboolean
1069 get_doc_point_from_offset (EvView *view,
1070                            gint    page,
1071                            gint    x_offset,
1072                            gint    y_offset,
1073                            gint   *x_new,
1074                            gint   *y_new)
1075 {
1076         int width, height;
1077         double x, y;
1078
1079         ev_page_cache_get_size (view->page_cache, page,
1080                                 view->rotation,
1081                                 1.0,
1082                                 &width, &height);
1083
1084         x_offset = x_offset / view->scale;
1085         y_offset = y_offset / view->scale;
1086
1087         if (view->rotation == 0) {
1088                 x = x_offset;
1089                 y = y_offset;
1090         } else if (view->rotation == 90) {
1091                 x = y_offset;
1092                 y = width - x_offset;
1093         } else if (view->rotation == 180) {
1094                 x = width - x_offset;
1095                 y = height - y_offset;
1096         } else if (view->rotation == 270) {
1097                 x = height - y_offset;
1098                 y = x_offset;
1099         } else {
1100                 g_assert_not_reached ();
1101         }
1102
1103         *x_new = x;
1104         *y_new = y;
1105
1106         return TRUE;
1107 }
1108
1109 /*** Hyperref ***/
1110 static EvLink *
1111 ev_view_get_link_at_location (EvView  *view,
1112                               gdouble  x,
1113                               gdouble  y)
1114 {
1115         gint page = -1;
1116         gint x_offset = 0, y_offset = 0;
1117         gint x_new = 0, y_new = 0;
1118         GList *link_mapping;
1119
1120         if (!EV_IS_DOCUMENT_LINKS (view->document))
1121                 return NULL;
1122
1123         x += view->scroll_x;
1124         y += view->scroll_y;
1125
1126         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1127
1128         if (page == -1)
1129                 return NULL;
1130
1131
1132         if (get_doc_point_from_offset (view, page, x_offset,
1133                                        y_offset, &x_new, &y_new) == FALSE)
1134                 return NULL;
1135
1136         link_mapping = ev_pixbuf_cache_get_link_mapping (view->pixbuf_cache, page);
1137
1138         if (link_mapping)
1139                 return ev_link_mapping_find (link_mapping, x_new, y_new);
1140         else
1141                 return NULL;
1142 }
1143
1144 static void
1145 goto_fitr_dest (EvView *view, EvLinkDest *dest)
1146 {
1147         EvPoint doc_point;
1148         double zoom;
1149
1150         zoom = zoom_for_size_best_fit (ev_link_dest_get_right (dest) - ev_link_dest_get_left (dest),
1151                                        ev_link_dest_get_bottom (dest) - ev_link_dest_get_top (dest),
1152                                        ev_view_get_width (view),
1153                                        ev_view_get_height (view), 0, 0);
1154
1155         ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1156         ev_view_set_zoom (view, zoom, FALSE);
1157
1158         doc_point.x = ev_link_dest_get_left (dest);
1159         doc_point.y = ev_link_dest_get_top (dest);
1160
1161         view->current_page = ev_link_dest_get_page (dest);
1162         view->pending_point = doc_point;
1163         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1164
1165         gtk_widget_queue_resize (GTK_WIDGET (view));
1166 }
1167
1168 static void
1169 goto_fitv_dest (EvView *view, EvLinkDest *dest)
1170 {
1171         EvPoint doc_point;
1172         int doc_width, doc_height, page;
1173         double zoom;
1174
1175         page = ev_link_dest_get_page (dest);
1176         ev_page_cache_get_size (view->page_cache, page, 0, 1.0, &doc_width, &doc_height);
1177
1178         doc_point.x = ev_link_dest_get_left (dest);
1179         doc_point.y = 0;
1180
1181         zoom = zoom_for_size_fit_height (doc_width - doc_point.x , doc_height,
1182                                          ev_view_get_width (view),
1183                                          ev_view_get_height (view), 0);
1184
1185         ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1186         ev_view_set_zoom (view, zoom, FALSE);
1187
1188         view->current_page = page;
1189         view->pending_point = doc_point;
1190         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1191
1192         gtk_widget_queue_resize (GTK_WIDGET (view));
1193 }
1194
1195 static void
1196 goto_fith_dest (EvView *view, EvLinkDest *dest)
1197 {
1198         EvPoint doc_point;
1199         int doc_width, doc_height, page;
1200         double zoom;
1201
1202         page = ev_link_dest_get_page (dest);
1203         ev_page_cache_get_size (view->page_cache, page, 0, 1.0, &doc_width, &doc_height);
1204
1205         doc_point.x = 0;
1206         doc_point.y = ev_link_dest_get_top (dest);
1207
1208         zoom = zoom_for_size_fit_width (doc_width, ev_link_dest_get_top (dest),
1209                                         ev_view_get_width (view),
1210                                         ev_view_get_height (view), 0);
1211
1212         ev_view_set_sizing_mode (view, EV_SIZING_FIT_WIDTH);
1213         ev_view_set_zoom (view, zoom, FALSE);
1214
1215         view->current_page = page;
1216         view->pending_point = doc_point;
1217         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1218
1219         gtk_widget_queue_resize (GTK_WIDGET (view));
1220 }
1221
1222 static void
1223 goto_fit_dest (EvView *view, EvLinkDest *dest)
1224 {
1225         double zoom;
1226         int doc_width, doc_height;
1227         int page;
1228
1229         page = ev_link_dest_get_page (dest);
1230         ev_page_cache_get_size (view->page_cache, page, 0, 1.0, &doc_width, &doc_height);
1231
1232         zoom = zoom_for_size_best_fit (doc_width, doc_height, ev_view_get_width (view),
1233                                        ev_view_get_height (view), 0, 0);
1234
1235         ev_view_set_sizing_mode (view, EV_SIZING_BEST_FIT);
1236         ev_view_set_zoom (view, zoom, FALSE);
1237
1238         view->current_page = page;
1239         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1240
1241         gtk_widget_queue_resize (GTK_WIDGET (view));
1242 }
1243
1244 static void
1245 goto_xyz_dest (EvView *view, EvLinkDest *dest)
1246 {
1247         EvPoint doc_point;
1248         gint page;
1249         double zoom;
1250
1251         zoom = ev_link_dest_get_zoom (dest);
1252         page = ev_link_dest_get_page (dest);
1253
1254         if (zoom > 1) {
1255                 ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1256                 ev_view_set_zoom (view, zoom, FALSE);
1257         }
1258
1259         doc_point.x = ev_link_dest_get_left (dest);
1260         doc_point.y = ev_link_dest_get_top (dest);
1261
1262         view->current_page = page;
1263         view->pending_point = doc_point;
1264         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1265
1266         gtk_widget_queue_resize (GTK_WIDGET (view));
1267 }
1268
1269 static void
1270 goto_dest (EvView *view, EvLinkDest *dest)
1271 {
1272         EvLinkDestType type;
1273         int page, n_pages, current_page;
1274
1275         page = ev_link_dest_get_page (dest);
1276         n_pages = ev_page_cache_get_n_pages (view->page_cache);
1277
1278         if (page < 0 || page >= n_pages)
1279                 return;
1280
1281         current_page = view->current_page;
1282
1283         type = ev_link_dest_get_dest_type (dest);
1284
1285         switch (type) {
1286                 case EV_LINK_DEST_TYPE_PAGE:
1287                         ev_page_cache_set_current_page (view->page_cache, page);
1288                         break;
1289                 case EV_LINK_DEST_TYPE_FIT:
1290                         goto_fit_dest (view, dest);
1291                         break;
1292                 case EV_LINK_DEST_TYPE_FITH:
1293                         goto_fith_dest (view, dest);
1294                         break;
1295                 case EV_LINK_DEST_TYPE_FITV:
1296                         goto_fitv_dest (view, dest);
1297                         break;
1298                 case EV_LINK_DEST_TYPE_FITR:
1299                         goto_fitr_dest (view, dest);
1300                         break;
1301                 case EV_LINK_DEST_TYPE_XYZ:
1302                         goto_xyz_dest (view, dest);
1303                         break;
1304                 case EV_LINK_DEST_TYPE_PAGE_LABEL:
1305                         ev_page_cache_set_page_label (view->page_cache, ev_link_dest_get_page_label (dest));
1306                         break;
1307                 default:
1308                         g_assert_not_reached ();
1309         }
1310
1311         if (current_page != view->current_page)
1312                 ev_page_cache_set_current_page (view->page_cache,
1313                                                 view->current_page);
1314 }
1315
1316 static void
1317 ev_view_goto_dest (EvView *view, EvLinkDest *dest)
1318 {
1319         EvLinkDestType type;
1320
1321         type = ev_link_dest_get_dest_type (dest);
1322
1323         if (type == EV_LINK_DEST_TYPE_NAMED) {
1324                 EvLinkDest  *dest2;
1325                 const gchar *named_dest;
1326
1327                 named_dest = ev_link_dest_get_named_dest (dest);
1328                 dest2 = ev_document_links_find_link_dest (EV_DOCUMENT_LINKS (view->document),
1329                                                           named_dest);
1330                 if (dest2) {
1331                         goto_dest (view, dest2);
1332                         g_object_unref (dest2);
1333                 }
1334
1335                 return;
1336         }
1337
1338         goto_dest (view, dest);
1339 }
1340
1341 void
1342 ev_view_handle_link (EvView *view, EvLink *link)
1343 {
1344         EvLinkAction    *action = NULL;
1345         EvLinkActionType type;
1346
1347         action = ev_link_get_action (link);
1348         if (!action)
1349                 return;
1350
1351         g_signal_emit (view, signals[SIGNAL_HANDLE_LINK], 0, link);
1352
1353         type = ev_link_action_get_action_type (action);
1354
1355         switch (type) {
1356                 case EV_LINK_ACTION_TYPE_GOTO_DEST: {
1357                         EvLinkDest *dest;
1358
1359                         dest = ev_link_action_get_dest (action);
1360                         ev_view_goto_dest (view, dest);
1361                 }
1362                         break;
1363                 case EV_LINK_ACTION_TYPE_GOTO_REMOTE:
1364                 case EV_LINK_ACTION_TYPE_EXTERNAL_URI:
1365                 case EV_LINK_ACTION_TYPE_LAUNCH:
1366                 case EV_LINK_ACTION_TYPE_NAMED:
1367                         g_signal_emit (view, signals[SIGNAL_EXTERNAL_LINK], 0, action);
1368                         break;
1369         }
1370 }
1371
1372 static gchar *
1373 page_label_from_dest (EvView *view, EvLinkDest *dest)
1374 {
1375         EvLinkDestType type;
1376         gchar *msg = NULL;
1377
1378         type = ev_link_dest_get_dest_type (dest);
1379
1380         switch (type) {
1381                 case EV_LINK_DEST_TYPE_NAMED: {
1382                         EvLinkDest  *dest2;
1383                         const gchar *named_dest;
1384
1385                         named_dest = ev_link_dest_get_named_dest (dest);
1386                         dest2 = ev_document_links_find_link_dest (EV_DOCUMENT_LINKS (view->document),
1387                                                                   named_dest);
1388                         if (dest2) {
1389                                 msg = ev_page_cache_get_page_label (view->page_cache,
1390                                                                     ev_link_dest_get_page (dest2));
1391                                 g_object_unref (dest2);
1392                         }
1393                 }
1394
1395                         break;
1396                 default:
1397                         msg = ev_page_cache_get_page_label (view->page_cache,
1398                                                             ev_link_dest_get_page (dest));
1399         }
1400
1401         return msg;
1402 }
1403
1404 static char *
1405 tip_from_action_named (EvLinkAction *action)
1406 {
1407         const gchar *name = ev_link_action_get_name (action);
1408
1409         if (g_ascii_strcasecmp (name, "FirstPage") == 0) {
1410                 return g_strdup (_("Go to first page"));
1411         } else if (g_ascii_strcasecmp (name, "PrevPage") == 0) {
1412                 return g_strdup (_("Go to previous page"));
1413         } else if (g_ascii_strcasecmp (name, "NextPage") == 0) {
1414                 return g_strdup (_("Go to next page"));
1415         } else if (g_ascii_strcasecmp (name, "LastPage") == 0) {
1416                 return g_strdup (_("Go to last page"));
1417         } else if (g_ascii_strcasecmp (name, "GoToPage") == 0) {
1418                 return g_strdup (_("Go to page"));
1419         } else if (g_ascii_strcasecmp (name, "Find") == 0) {
1420                 return g_strdup (_("Find"));
1421         }
1422
1423         return NULL;
1424 }
1425
1426 static char *
1427 tip_from_link (EvView *view, EvLink *link)
1428 {
1429         EvLinkAction *action;
1430         EvLinkActionType type;
1431         char *msg = NULL;
1432         char *page_label;
1433         const char *title;
1434
1435         action = ev_link_get_action (link);
1436         title = ev_link_get_title (link);
1437
1438         if (!action)
1439                 return title ? g_strdup (title) : NULL;
1440
1441         type = ev_link_action_get_action_type (action);
1442
1443         switch (type) {
1444                 case EV_LINK_ACTION_TYPE_GOTO_DEST:
1445                         page_label = page_label_from_dest (view,
1446                                                            ev_link_action_get_dest (action));
1447                         msg = g_strdup_printf (_("Go to page %s"), page_label);
1448                         g_free (page_label);
1449                         break;
1450                 case EV_LINK_ACTION_TYPE_GOTO_REMOTE:
1451                         if (title) {
1452                                 msg = g_strdup_printf (_("Go to %s on file “%s”"), title,
1453                                                        ev_link_action_get_filename (action));
1454                         } else {
1455                                 msg = g_strdup_printf (_("Go to file “%s”"),
1456                                                        ev_link_action_get_filename (action));
1457                         }
1458
1459                         break;
1460                 case EV_LINK_ACTION_TYPE_EXTERNAL_URI:
1461                         msg = g_strdup (ev_link_action_get_uri (action));
1462                         break;
1463                 case EV_LINK_ACTION_TYPE_LAUNCH:
1464                         msg = g_strdup_printf (_("Launch %s"),
1465                                                ev_link_action_get_filename (action));
1466                         break;
1467                 case EV_LINK_ACTION_TYPE_NAMED:
1468                         msg = tip_from_action_named (action);
1469                         break;
1470                 default:
1471                         if (title)
1472                                 msg = g_strdup (title);
1473                         break;
1474         }
1475
1476         return msg;
1477 }
1478
1479 static void
1480 handle_link_over_xy (EvView *view, gint x, gint y)
1481 {
1482         EvLink *link;
1483
1484         link = ev_view_get_link_at_location (view, x, y);
1485
1486         if (view->link_tooltip == NULL) {
1487                 view->link_tooltip = ev_tooltip_new (GTK_WIDGET (view));
1488         }
1489
1490         if (view->hovered_link != link) {
1491                 view->hovered_link = link;
1492                 ev_tooltip_deactivate (EV_TOOLTIP (view->link_tooltip));
1493         }
1494
1495         if (link) {
1496                 char *msg = tip_from_link (view, link);
1497
1498                 if (msg && g_utf8_validate (msg, -1, NULL)) {
1499                         EvTooltip *tooltip = EV_TOOLTIP (view->link_tooltip);
1500
1501                         ev_tooltip_set_position (tooltip, x, y);
1502                         ev_tooltip_set_text (tooltip, msg);
1503                         ev_tooltip_activate (tooltip);
1504                 }
1505                 g_free (msg);
1506
1507                 ev_view_set_cursor (view, EV_VIEW_CURSOR_LINK);
1508         } else if (location_in_text (view, x + view->scroll_x, y + view->scroll_y)) {
1509                 ev_view_set_cursor (view, EV_VIEW_CURSOR_IBEAM);
1510         } else {
1511                 ev_view_set_status (view, NULL);
1512                 if (view->cursor == EV_VIEW_CURSOR_LINK ||
1513                     view->cursor == EV_VIEW_CURSOR_IBEAM)
1514                         ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
1515         }
1516         return;
1517 }
1518
1519 /*** Images ***/
1520 static EvImage *
1521 ev_view_get_image_at_location (EvView  *view,
1522                                gdouble  x,
1523                                gdouble  y)
1524 {
1525         gint page = -1;
1526         gint x_offset = 0, y_offset = 0;
1527         gint x_new = 0, y_new = 0;
1528         GList *image_mapping;
1529
1530         if (!EV_IS_DOCUMENT_IMAGES (view->document))
1531                 return NULL;
1532
1533         x += view->scroll_x;
1534         y += view->scroll_y;
1535
1536         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1537
1538         if (page == -1)
1539                 return NULL;
1540
1541         if (get_doc_point_from_offset (view, page, x_offset,
1542                                        y_offset, &x_new, &y_new) == FALSE)
1543                 return NULL;
1544
1545         image_mapping = ev_pixbuf_cache_get_image_mapping (view->pixbuf_cache, page);
1546
1547         if (image_mapping)
1548                 return ev_image_mapping_find (image_mapping, x_new, y_new);
1549         else
1550                 return NULL;
1551 }
1552
1553 /*** GtkWidget implementation ***/
1554
1555 static void
1556 ev_view_size_request_continuous_dual_page (EvView         *view,
1557                                            GtkRequisition *requisition)
1558 {
1559         int max_width;
1560         gint n_pages;
1561         GtkBorder border;
1562
1563         ev_page_cache_get_max_width (view->page_cache, view->rotation,
1564                                      view->scale, &max_width);
1565         compute_border (view, max_width, max_width, &border);
1566
1567         n_pages = ev_page_cache_get_n_pages (view->page_cache) + 1;
1568
1569         requisition->width = (max_width + border.left + border.right) * 2 + (view->spacing * 3);
1570         get_page_y_offset (view, n_pages, view->scale, &requisition->height);
1571
1572         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
1573                 requisition->width = 1;
1574         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
1575                 requisition->width = 1;
1576                 /* FIXME: This could actually be set on one page docs or docs
1577                  * with a strange aspect ratio. */
1578                 /* requisition->height = 1;*/
1579         }
1580 }
1581
1582 static void
1583 ev_view_size_request_continuous (EvView         *view,
1584                                  GtkRequisition *requisition)
1585 {
1586         int max_width;
1587         int n_pages;
1588         GtkBorder border;
1589
1590
1591         ev_page_cache_get_max_width (view->page_cache, view->rotation,
1592                                      view->scale, &max_width);
1593         n_pages = ev_page_cache_get_n_pages (view->page_cache);
1594         compute_border (view, max_width, max_width, &border);
1595
1596         requisition->width = max_width + (view->spacing * 2) + border.left + border.right;
1597         get_page_y_offset (view, n_pages, view->scale, &requisition->height);
1598
1599         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
1600                 requisition->width = 1;
1601         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
1602                 requisition->width = 1;
1603                 /* FIXME: This could actually be set on one page docs or docs
1604                  * with a strange aspect ratio. */
1605                 /* requisition->height = 1;*/
1606         }
1607 }
1608
1609 static void
1610 ev_view_size_request_dual_page (EvView         *view,
1611                                 GtkRequisition *requisition)
1612 {
1613         GtkBorder border;
1614         gint width, height;
1615
1616         /* Find the largest of the two. */
1617         ev_page_cache_get_size (view->page_cache,
1618                                 view->current_page,
1619                                 view->rotation,
1620                                 view->scale,
1621                                 &width, &height);
1622         if (view->current_page + 1 < ev_page_cache_get_n_pages (view->page_cache)) {
1623                 gint width_2, height_2;
1624                 ev_page_cache_get_size (view->page_cache,
1625                                         view->current_page + 1,
1626                                         view->rotation,
1627                                         view->scale,
1628                                         &width_2, &height_2);
1629                 if (width_2 > width) {
1630                         width = width_2;
1631                         height = height_2;
1632                 }
1633         }
1634         compute_border (view, width, height, &border);
1635
1636         requisition->width = ((width + border.left + border.right) * 2) +
1637                 (view->spacing * 3);
1638         requisition->height = (height + border.top + border.bottom) +
1639                 (view->spacing * 2);
1640
1641         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
1642                 requisition->width = 1;
1643         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
1644                 requisition->width = 1;
1645                 requisition->height = 1;
1646         }
1647 }
1648
1649 static void
1650 ev_view_size_request_single_page (EvView         *view,
1651                                   GtkRequisition *requisition)
1652 {
1653         GtkBorder border;
1654         gint width, height;
1655
1656         ev_page_cache_get_size (view->page_cache,
1657                                 view->current_page,
1658                                 view->rotation,
1659                                 view->scale,
1660                                 &width, &height);
1661         compute_border (view, width, height, &border);
1662
1663         requisition->width = width + border.left + border.right + (2 * view->spacing);
1664         requisition->height = height + border.top + border.bottom + (2 * view->spacing);
1665
1666         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
1667                 requisition->width = 1;
1668                 requisition->height = height + border.top + border.bottom + (2 * view->spacing);
1669         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
1670                 requisition->width = 1;
1671                 requisition->height = 1;
1672         }
1673 }
1674
1675 static void
1676 ev_view_size_request (GtkWidget      *widget,
1677                       GtkRequisition *requisition)
1678 {
1679         EvView *view = EV_VIEW (widget);
1680
1681         if (view->document == NULL) {
1682                 requisition->width = 1;
1683                 requisition->height = 1;
1684                 return;
1685         }
1686
1687         if (view->presentation) {
1688                 requisition->width = 1;
1689                 requisition->height = 1;
1690                 return;
1691         }
1692
1693         if (view->continuous && view->dual_page)
1694                 ev_view_size_request_continuous_dual_page (view, requisition);
1695         else if (view->continuous)
1696                 ev_view_size_request_continuous (view, requisition);
1697         else if (view->dual_page)
1698                 ev_view_size_request_dual_page (view, requisition);
1699         else
1700                 ev_view_size_request_single_page (view, requisition);
1701 }
1702
1703 static void
1704 ev_view_size_allocate (GtkWidget      *widget,
1705                        GtkAllocation  *allocation)
1706 {
1707         EvView *view = EV_VIEW (widget);
1708
1709         GTK_WIDGET_CLASS (ev_view_parent_class)->size_allocate (widget, allocation);
1710
1711         if (view->sizing_mode == EV_SIZING_FIT_WIDTH ||
1712             view->sizing_mode == EV_SIZING_BEST_FIT) {
1713
1714                 g_signal_emit (view, signals[SIGNAL_ZOOM_INVALID], 0);
1715
1716                 ev_view_size_request (widget, &widget->requisition);
1717         }
1718
1719         view_set_adjustment_values (view, GTK_ORIENTATION_HORIZONTAL);
1720         view_set_adjustment_values (view, GTK_ORIENTATION_VERTICAL);
1721
1722         if (view->document)
1723                 view_update_range_and_current_page (view);
1724
1725         view->pending_scroll = SCROLL_TO_KEEP_POSITION;
1726         view->pending_resize = FALSE;
1727 }
1728
1729 static void
1730 ev_view_realize (GtkWidget *widget)
1731 {
1732         EvView *view = EV_VIEW (widget);
1733         GdkWindowAttr attributes;
1734
1735         GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
1736
1737         attributes.window_type = GDK_WINDOW_CHILD;
1738         attributes.wclass = GDK_INPUT_OUTPUT;
1739         attributes.visual = gtk_widget_get_visual (widget);
1740         attributes.colormap = gtk_widget_get_colormap (widget);
1741
1742         attributes.x = widget->allocation.x;
1743         attributes.y = widget->allocation.y;
1744         attributes.width = widget->allocation.width;
1745         attributes.height = widget->allocation.height;
1746         attributes.event_mask = GDK_EXPOSURE_MASK |
1747                                 GDK_BUTTON_PRESS_MASK |
1748                                 GDK_BUTTON_RELEASE_MASK |
1749                                 GDK_SCROLL_MASK |
1750                                 GDK_KEY_PRESS_MASK |
1751                                 GDK_POINTER_MOTION_MASK |
1752                                 GDK_POINTER_MOTION_HINT_MASK |
1753                                 GDK_ENTER_NOTIFY_MASK |
1754                                 GDK_LEAVE_NOTIFY_MASK;
1755
1756         widget->window = gdk_window_new (gtk_widget_get_parent_window (widget),
1757                                          &attributes,
1758                                          GDK_WA_X | GDK_WA_Y |
1759                                          GDK_WA_COLORMAP |
1760                                          GDK_WA_VISUAL);
1761         gdk_window_set_user_data (widget->window, widget);
1762         widget->style = gtk_style_attach (widget->style, widget->window);
1763
1764         if (view->presentation)
1765                 gdk_window_set_background (widget->window, &widget->style->black);
1766         else
1767                 gdk_window_set_background (widget->window, &widget->style->mid [GTK_STATE_NORMAL]);
1768 }
1769
1770 static gboolean
1771 ev_view_scroll_event (GtkWidget *widget, GdkEventScroll *event)
1772 {
1773         EvView *view = EV_VIEW (widget);
1774         guint state;
1775
1776         state = event->state & gtk_accelerator_get_default_mod_mask ();
1777
1778         if (state == GDK_CONTROL_MASK && view->presentation == FALSE) {
1779                 ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1780
1781                 if (event->direction == GDK_SCROLL_UP ||
1782                     event->direction == GDK_SCROLL_LEFT) {
1783                         if (ev_view_can_zoom_in (view)) {
1784                                 ev_view_zoom_in (view);
1785                         }
1786                 } else {
1787                         if (ev_view_can_zoom_out (view)) {
1788                                 ev_view_zoom_out (view);
1789                         }
1790                 }
1791
1792                 return TRUE;
1793         }
1794
1795         view->jump_to_find_result = FALSE;
1796         /* Shift+Wheel scrolls the in the perpendicular direction */
1797         if (state & GDK_SHIFT_MASK) {
1798                 if (event->direction == GDK_SCROLL_UP)
1799                         event->direction = GDK_SCROLL_LEFT;
1800                 if (event->direction == GDK_SCROLL_LEFT)
1801                         event->direction = GDK_SCROLL_UP;
1802                 if (event->direction == GDK_SCROLL_DOWN)
1803                         event->direction = GDK_SCROLL_RIGHT;
1804                 if (event->direction == GDK_SCROLL_RIGHT)
1805                         event->direction = GDK_SCROLL_DOWN;
1806
1807                 event->state &= ~GDK_SHIFT_MASK;
1808                 state &= ~GDK_SHIFT_MASK;
1809         }
1810
1811         if (state == 0 && view->presentation) {
1812                 switch (event->direction) {
1813                         case GDK_SCROLL_DOWN:
1814                         case GDK_SCROLL_RIGHT:
1815                                 ev_view_next_page (view);
1816                                 break;
1817                         case GDK_SCROLL_UP:
1818                         case GDK_SCROLL_LEFT:
1819                                 ev_view_previous_page (view);
1820                                 break;
1821                 }
1822
1823                 return TRUE;
1824         }
1825
1826         return FALSE;
1827 }
1828
1829 static EvViewSelection *
1830 find_selection_for_page (EvView *view,
1831                          gint    page)
1832 {
1833         GList *list;
1834
1835         for (list = view->selection_info.selections; list != NULL; list = list->next) {
1836                 EvViewSelection *selection;
1837
1838                 selection = (EvViewSelection *) list->data;
1839
1840                 if (selection->page == page)
1841                         return selection;
1842         }
1843
1844         return NULL;
1845 }
1846
1847 static void
1848 draw_end_presentation_page (EvView       *view,
1849                             GdkRectangle *page_area)
1850 {
1851         PangoLayout *layout;
1852         PangoFontDescription *font_desc;
1853         gchar *markup;
1854         const gchar *text = _("End of presentation. Press Escape to exit.");
1855
1856         if (view->presentation_state != EV_PRESENTATION_END)
1857                 return;
1858
1859         layout = gtk_widget_create_pango_layout (GTK_WIDGET (view), NULL);
1860         markup = g_strdup_printf ("<span foreground=\"white\">%s</span>", text);
1861         pango_layout_set_markup (layout, markup, -1);
1862         g_free (markup);
1863
1864         font_desc = pango_font_description_new ();
1865         pango_font_description_set_size (font_desc, 16 * PANGO_SCALE);
1866         pango_layout_set_font_description (layout, font_desc);
1867
1868         gtk_paint_layout (GTK_WIDGET (view)->style,
1869                           GTK_WIDGET (view)->window,
1870                           GTK_WIDGET_STATE (view),
1871                           FALSE,
1872                           page_area,
1873                           GTK_WIDGET (view),
1874                           NULL,
1875                           page_area->x + 15,
1876                           page_area->y + 15,
1877                           layout);
1878
1879         pango_font_description_free (font_desc);
1880         g_object_unref (layout);
1881 }
1882
1883 static gboolean
1884 ev_view_expose_event (GtkWidget      *widget,
1885                       GdkEventExpose *event)
1886 {
1887         EvView *view = EV_VIEW (widget);
1888         int i;
1889
1890         if (view->presentation) {
1891                 switch (view->presentation_state) {
1892                         case EV_PRESENTATION_END: {
1893                                 GdkRectangle area = {0};
1894
1895                                 area.width = widget->allocation.width;
1896                                 area.height = widget->allocation.height;
1897
1898                                 draw_end_presentation_page (view, &area);
1899                         }
1900                                 return FALSE;
1901                         case EV_PRESENTATION_BLACK:
1902                         case EV_PRESENTATION_WHITE:
1903                                 return FALSE;
1904                         case EV_PRESENTATION_NORMAL:
1905                         default:
1906                                 break;
1907                 }
1908         } else if (view->loading) {
1909                 GdkRectangle area = {0};
1910
1911                 area.width = widget->allocation.width;
1912                 area.height = widget->allocation.height;
1913
1914                 draw_loading_text (view,
1915                                    &area,
1916                                    &(event->area));
1917         }
1918
1919         if (view->document == NULL)
1920                 return FALSE;
1921
1922         for (i = view->start_page; i <= view->end_page; i++) {
1923                 GdkRectangle page_area;
1924                 GtkBorder border;
1925                 gboolean page_ready = TRUE;
1926
1927                 if (!get_page_extents (view, i, &page_area, &border))
1928                         continue;
1929
1930                 page_area.x -= view->scroll_x;
1931                 page_area.y -= view->scroll_y;
1932
1933                 draw_one_page (view, i, &page_area, &border, &(event->area), &page_ready);
1934
1935                 if (page_ready && EV_IS_DOCUMENT_FIND (view->document))
1936                         highlight_find_results (view, i);
1937         }
1938
1939         return FALSE;
1940 }
1941
1942 static gboolean
1943 ev_view_do_popup_menu (EvView *view,
1944                        gdouble x,
1945                        gdouble y)
1946 {
1947         EvLink  *link;
1948         EvImage *image;
1949
1950         image = ev_view_get_image_at_location (view, x, y);
1951         if (image) {
1952                 g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, image);
1953                 return TRUE;
1954         }
1955
1956         link = ev_view_get_link_at_location (view, x, y);
1957         if (link) {
1958                 g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, link);
1959                 return TRUE;
1960         }
1961
1962         g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, NULL);
1963
1964         return TRUE;
1965 }
1966
1967 static gboolean
1968 ev_view_popup_menu (GtkWidget *widget)
1969 {
1970         gint x, y;
1971
1972         gtk_widget_get_pointer (widget, &x, &y);
1973         return ev_view_do_popup_menu (EV_VIEW (widget), x, y);
1974 }
1975
1976 static gboolean
1977 ev_view_button_press_event (GtkWidget      *widget,
1978                             GdkEventButton *event)
1979 {
1980         EvView *view = EV_VIEW (widget);
1981
1982         if (!GTK_WIDGET_HAS_FOCUS (widget)) {
1983                 gtk_widget_grab_focus (widget);
1984         }
1985
1986         view->pressed_button = event->button;
1987         view->selection_info.in_drag = FALSE;
1988
1989         switch (event->button) {
1990                 case 1: {
1991                         EvImage *image;
1992
1993                         if (view->selection_info.selections) {
1994                                 if (location_in_selected_text (view,
1995                                                                event->x + view->scroll_x,
1996                                                                event->y + view->scroll_y)) {
1997                                         view->selection_info.in_drag = TRUE;
1998                                 } else {
1999                                         clear_selection (view);
2000                                 }
2001
2002                                 gtk_widget_queue_draw (widget);
2003                         } else if ((image = ev_view_get_image_at_location (view, event->x, event->y))) {
2004                                 if (view->image_dnd_info.image)
2005                                         g_object_unref (view->image_dnd_info.image);
2006                                 view->image_dnd_info.image = g_object_ref (image);
2007                                 view->image_dnd_info.in_drag = TRUE;
2008
2009                                 view->image_dnd_info.start.x = event->x + view->scroll_x;
2010                                 view->image_dnd_info.start.y = event->y + view->scroll_y;
2011                         }
2012
2013                         view->selection_info.start.x = event->x + view->scroll_x;
2014                         view->selection_info.start.y = event->y + view->scroll_y;
2015                 }
2016                         return TRUE;
2017                 case 2:
2018                         /* use root coordinates as reference point because
2019                          * scrolling changes window relative coordinates */
2020                         view->drag_info.start.x = event->x_root;
2021                         view->drag_info.start.y = event->y_root;
2022                         view->drag_info.hadj = gtk_adjustment_get_value (view->hadjustment);
2023                         view->drag_info.vadj = gtk_adjustment_get_value (view->vadjustment);
2024
2025                         ev_view_set_cursor (view, EV_VIEW_CURSOR_DRAG);
2026
2027                         return TRUE;
2028                 case 3:
2029                         return ev_view_do_popup_menu (view, event->x, event->y);
2030         }
2031
2032         return FALSE;
2033 }
2034
2035 /*** Drag and Drop ***/
2036 static void
2037 ev_view_drag_data_get (GtkWidget        *widget,
2038                        GdkDragContext   *context,
2039                        GtkSelectionData *selection_data,
2040                        guint             info,
2041                        guint             time)
2042 {
2043         EvView *view = EV_VIEW (widget);
2044
2045         switch (info) {
2046                 case TARGET_DND_TEXT:
2047                         if (view->selection_info.selections &&
2048                             ev_document_can_get_text (view->document)) {
2049                                 gchar *text;
2050
2051                                 text = get_selected_text (view);
2052
2053                                 gtk_selection_data_set_text (selection_data,
2054                                                              text,
2055                                                              strlen (text));
2056
2057                                 g_free (text);
2058                         }
2059                         break;
2060                 case TARGET_DND_IMAGE:
2061                         if (view->image_dnd_info.image) {
2062                                 GdkPixbuf *pixbuf;
2063
2064                                 pixbuf = ev_image_get_pixbuf (view->image_dnd_info.image);
2065                                 gtk_selection_data_set_pixbuf (selection_data, pixbuf);
2066                         }
2067                         break;
2068                 case TARGET_DND_URI:
2069                         if (view->image_dnd_info.image) {
2070                                 const gchar *tmp_uri;
2071                                 gchar      **uris;
2072
2073                                 tmp_uri = ev_image_save_tmp (view->image_dnd_info.image);
2074
2075                                 uris = g_new0 (gchar *, 2);
2076                                 uris[0] = (gchar *)tmp_uri;
2077
2078                                 gtk_selection_data_set_uris (selection_data, uris);
2079
2080                                 /* g_free instead of g_strfreev since tmp_uri is const */
2081                                 g_free (uris);
2082                         }
2083         }
2084 }
2085
2086 static gboolean
2087 ev_view_drag_motion (GtkWidget      *widget,
2088                      GdkDragContext *context,
2089                      gint            x,
2090                      gint            y,
2091                      guint           time)
2092 {
2093         if (gtk_drag_get_source_widget (context) == widget)
2094                 gdk_drag_status (context, 0, time);
2095         else
2096                 gdk_drag_status (context, context->suggested_action, time);
2097
2098         return TRUE;
2099 }
2100
2101 static void
2102 ev_view_drag_data_received (GtkWidget          *widget,
2103                             GdkDragContext     *context,
2104                             gint                x,
2105                             gint                y,
2106                             GtkSelectionData   *selection_data,
2107                             guint               info,
2108                             guint               time)
2109 {
2110         gchar  **uris;
2111         gint     i = 0;
2112         GSList  *uri_list = NULL;
2113
2114         uris = gtk_selection_data_get_uris (selection_data);
2115         if (!uris) {
2116                 gtk_drag_finish (context, FALSE, FALSE, time);
2117                 return;
2118         }
2119
2120         for (i = 0; uris[i]; i++) {
2121                 uri_list = g_slist_prepend (uri_list, (gpointer) uris[i]);
2122         }
2123
2124         ev_application_open_uri_list (EV_APP, uri_list,
2125                                       gtk_widget_get_screen (widget),
2126                                       0);
2127         gtk_drag_finish (context, TRUE, FALSE, time);
2128
2129         g_strfreev (uris);
2130         g_slist_free (uri_list);
2131 }
2132
2133
2134 static gboolean
2135 selection_update_idle_cb (EvView *view)
2136 {
2137         compute_selections (view, &view->selection_info.start, &view->motion);
2138         view->selection_update_id = 0;
2139         return FALSE;
2140 }
2141
2142 static gboolean
2143 selection_scroll_timeout_cb (EvView *view)
2144 {
2145         gint x, y, shift = 0;
2146         GtkWidget *widget = GTK_WIDGET (view);
2147
2148         gtk_widget_get_pointer (widget, &x, &y);
2149
2150         if (y > widget->allocation.height) {
2151                 shift = (y - widget->allocation.height) / 2;
2152         } else if (y < 0) {
2153                 shift = y / 2;
2154         }
2155
2156         if (shift)
2157                 gtk_adjustment_set_value (view->vadjustment,
2158                                           CLAMP (view->vadjustment->value + shift,
2159                                           view->vadjustment->lower,
2160                                           view->vadjustment->upper -
2161                                           view->vadjustment->page_size));
2162
2163         if (x > widget->allocation.width) {
2164                 shift = (x - widget->allocation.width) / 2;
2165         } else if (x < 0) {
2166                 shift = x / 2;
2167         }
2168
2169         if (shift)
2170                 gtk_adjustment_set_value (view->hadjustment,
2171                                           CLAMP (view->hadjustment->value + shift,
2172                                           view->hadjustment->lower,
2173                                           view->hadjustment->upper -
2174                                           view->hadjustment->page_size));
2175
2176         return TRUE;
2177 }
2178
2179 static gboolean
2180 ev_view_motion_notify_event (GtkWidget      *widget,
2181                              GdkEventMotion *event)
2182 {
2183         EvView *view = EV_VIEW (widget);
2184         gint x, y;
2185
2186         if (!view->document)
2187                 return FALSE;
2188
2189         if (event->is_hint || event->window != widget->window) {
2190             gtk_widget_get_pointer (widget, &x, &y);
2191         } else {
2192             x = event->x;
2193             y = event->y;
2194         }
2195
2196         if (view->selection_info.in_drag) {
2197                 if (gtk_drag_check_threshold (widget,
2198                                               view->selection_info.start.x,
2199                                               view->selection_info.start.y,
2200                                               x, y)) {
2201                         GtkTargetList *target_list = gtk_target_list_new (NULL, 0);
2202
2203                         gtk_target_list_add_text_targets (target_list, TARGET_DND_TEXT);
2204
2205                         gtk_drag_begin (widget, target_list,
2206                                         GDK_ACTION_COPY,
2207                                         1, (GdkEvent *)event);
2208
2209                         view->selection_info.in_drag = FALSE;
2210
2211                         gtk_target_list_unref (target_list);
2212
2213                         return TRUE;
2214                 }
2215         } else if (view->image_dnd_info.in_drag) {
2216                 if (gtk_drag_check_threshold (widget,
2217                                               view->selection_info.start.x,
2218                                               view->selection_info.start.y,
2219                                               x, y)) {
2220                         GtkTargetList *target_list = gtk_target_list_new (NULL, 0);
2221
2222                         gtk_target_list_add_uri_targets (target_list, TARGET_DND_URI);
2223                         gtk_target_list_add_image_targets (target_list, TARGET_DND_IMAGE, TRUE);
2224
2225                         gtk_drag_begin (widget, target_list,
2226                                         GDK_ACTION_COPY,
2227                                         1, (GdkEvent *)event);
2228
2229                         view->image_dnd_info.in_drag = FALSE;
2230
2231                         gtk_target_list_unref (target_list);
2232
2233                         return TRUE;
2234                 }
2235         }
2236
2237         /* For the Evince 0.4.x release, we limit selection to un-rotated
2238          * documents only.
2239          */
2240         if (view->pressed_button == 1 && view->rotation == 0) {
2241
2242                 /* Schedule timeout to scroll during selection and additionally
2243                  * scroll once to allow arbitrary speed. */
2244                 if (!view->selection_scroll_id)
2245                     view->selection_scroll_id = g_timeout_add (SCROLL_TIME, (GSourceFunc)selection_scroll_timeout_cb, view);
2246                 else
2247                     selection_scroll_timeout_cb (view);
2248
2249                 view->selection_info.in_selection = TRUE;
2250                 view->motion.x = x + view->scroll_x;
2251                 view->motion.y = y + view->scroll_y;
2252
2253                 /* Queue an idle to handle the motion.  We do this because
2254                  * handling any selection events in the motion could be slower
2255                  * than new motion events reach us.  We always put it in the
2256                  * idle to make sure we catch up and don't visibly lag the
2257                  * mouse. */
2258                 if (!view->selection_update_id)
2259                         view->selection_update_id = g_idle_add ((GSourceFunc)selection_update_idle_cb, view);
2260
2261                 return TRUE;
2262         } else if (view->pressed_button == 2) {
2263                 if (!view->drag_info.in_drag) {
2264                         gboolean start;
2265
2266                         start = gtk_drag_check_threshold (widget,
2267                                                           view->drag_info.start.x,
2268                                                           view->drag_info.start.y,
2269                                                           event->x_root,
2270                                                           event->y_root);
2271                         view->drag_info.in_drag = start;
2272                 }
2273
2274                 if (view->drag_info.in_drag) {
2275                         int dx, dy;
2276                         gdouble dhadj_value, dvadj_value;
2277
2278                         dx = event->x_root - view->drag_info.start.x;
2279                         dy = event->y_root - view->drag_info.start.y;
2280
2281                         dhadj_value = view->hadjustment->page_size *
2282                                       (gdouble)dx / widget->allocation.width;
2283                         dvadj_value = view->vadjustment->page_size *
2284                                       (gdouble)dy / widget->allocation.height;
2285
2286                         /* clamp scrolling to visible area */
2287                         gtk_adjustment_set_value (view->hadjustment,
2288                                                   MIN(view->drag_info.hadj - dhadj_value,
2289                                                       view->hadjustment->upper -
2290                                                       view->hadjustment->page_size));
2291                         gtk_adjustment_set_value (view->vadjustment,
2292                                                   MIN(view->drag_info.vadj - dvadj_value,
2293                                                       view->vadjustment->upper -
2294                                                       view->vadjustment->page_size));
2295
2296                         return TRUE;
2297                 }
2298         } else if (view->pressed_button <= 0) {
2299                 handle_link_over_xy (view, x, y);
2300                 return TRUE;
2301         }
2302
2303         return FALSE;
2304 }
2305
2306 static gboolean
2307 ev_view_button_release_event (GtkWidget      *widget,
2308                               GdkEventButton *event)
2309 {
2310         EvView *view = EV_VIEW (widget);
2311         EvLink *link;
2312
2313         if (view->pressed_button == 2) {
2314                 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
2315         }
2316
2317         if (view->document && view->pressed_button != 3) {
2318                 link = ev_view_get_link_at_location (view, event->x, event->y);
2319         } else {
2320                 link = NULL;
2321         }
2322
2323         view->pressed_button = -1;
2324         view->drag_info.in_drag = FALSE;
2325         view->image_dnd_info.in_drag = FALSE;
2326
2327         if (view->selection_scroll_id) {
2328             g_source_remove (view->selection_scroll_id);
2329             view->selection_scroll_id = 0;
2330         }
2331         if (view->selection_update_id) {
2332             g_source_remove (view->selection_update_id);
2333             view->selection_update_id = 0;
2334         }
2335
2336         if (view->selection_info.selections) {
2337                 ev_view_update_primary_selection (view);
2338
2339                 if (view->selection_info.in_drag) {
2340                         clear_selection (view);
2341                         gtk_widget_queue_draw (widget);
2342                 }
2343
2344                 view->selection_info.in_drag = FALSE;
2345         } else if (link) {
2346                 if (event->button == 2) {
2347                         EvLinkAction    *action;
2348                         EvLinkActionType type;
2349
2350                         action = ev_link_get_action (link);
2351                         if (!action)
2352                                 return FALSE;
2353
2354                         type = ev_link_action_get_action_type (action);
2355                         if (type == EV_LINK_ACTION_TYPE_GOTO_DEST) {
2356                                 g_signal_emit (view,
2357                                                signals[SIGNAL_EXTERNAL_LINK],
2358                                                0, action);
2359                         }
2360                 } else {
2361                         ev_view_handle_link (view, link);
2362                 }
2363         } else if (view->presentation) {
2364                 switch (event->button) {
2365                         case 1:
2366                                 ev_view_next_page (view);
2367                                 return TRUE;
2368                         case 3:
2369                                 ev_view_previous_page (view);
2370                                 return TRUE;
2371                 }
2372         }
2373
2374         return FALSE;
2375 }
2376
2377 /* Goto Window */
2378 /* Cut and paste from gtkwindow.c */
2379 static void
2380 send_focus_change (GtkWidget *widget,
2381                    gboolean   in)
2382 {
2383         GdkEvent *fevent = gdk_event_new (GDK_FOCUS_CHANGE);
2384
2385         g_object_ref (widget);
2386
2387         if (in)
2388                 GTK_WIDGET_SET_FLAGS (widget, GTK_HAS_FOCUS);
2389         else
2390                 GTK_WIDGET_UNSET_FLAGS (widget, GTK_HAS_FOCUS);
2391
2392         fevent->focus_change.type = GDK_FOCUS_CHANGE;
2393         fevent->focus_change.window = g_object_ref (widget->window);
2394         fevent->focus_change.in = in;
2395
2396         gtk_widget_event (widget, fevent);
2397
2398         g_object_notify (G_OBJECT (widget), "has-focus");
2399
2400         g_object_unref (widget);
2401         gdk_event_free (fevent);
2402 }
2403
2404 static void
2405 ev_view_goto_window_hide (EvView *view)
2406 {
2407         /* send focus-in event */
2408         send_focus_change (view->goto_entry, FALSE);
2409         gtk_widget_hide (view->goto_window);
2410         gtk_entry_set_text (GTK_ENTRY (view->goto_entry), "");
2411 }
2412
2413 static gboolean
2414 ev_view_goto_window_delete_event (GtkWidget   *widget,
2415                                   GdkEventAny *event,
2416                                   EvView      *view)
2417 {
2418         ev_view_goto_window_hide (view);
2419
2420         return TRUE;
2421 }
2422
2423 static gboolean
2424 key_is_numeric (guint keyval)
2425 {
2426         return ((keyval >= GDK_0 && keyval <= GDK_9) ||
2427                 (keyval >= GDK_KP_0 && keyval <= GDK_KP_9));
2428 }
2429
2430 static gboolean
2431 ev_view_goto_window_key_press_event (GtkWidget   *widget,
2432                                      GdkEventKey *event,
2433                                      EvView      *view)
2434 {
2435         switch (event->keyval) {
2436                 case GDK_Escape:
2437                 case GDK_Tab:
2438                 case GDK_KP_Tab:
2439                 case GDK_ISO_Left_Tab:
2440                         ev_view_goto_window_hide (view);
2441                         return TRUE;
2442                 case GDK_Return:
2443                 case GDK_KP_Enter:
2444                 case GDK_ISO_Enter:
2445                         return FALSE;
2446                 default:
2447                         if (!key_is_numeric (event->keyval))
2448                                 return TRUE;
2449         }
2450
2451         return FALSE;
2452 }
2453
2454 static gboolean
2455 ev_view_goto_window_button_press_event (GtkWidget      *widget,
2456                                         GdkEventButton *event,
2457                                         EvView         *view)
2458 {
2459         ev_view_goto_window_hide (view);
2460
2461         return TRUE;
2462 }
2463
2464 static void
2465 ev_view_goto_entry_activate (GtkEntry *entry,
2466                              EvView   *view)
2467 {
2468         const gchar *text;
2469         gint         page;
2470
2471         text = gtk_entry_get_text (entry);
2472         page = atoi (text) - 1;
2473
2474         ev_view_goto_window_hide (view);
2475
2476         if (page >= 0 &&
2477             page < ev_page_cache_get_n_pages (view->page_cache))
2478                 ev_page_cache_set_current_page (view->page_cache, page);
2479 }
2480
2481 static void
2482 ev_view_goto_window_create (EvView *view)
2483 {
2484         GtkWidget *frame, *hbox, *toplevel, *label;
2485
2486         toplevel = gtk_widget_get_toplevel (GTK_WIDGET (view));
2487
2488         if (view->goto_window) {
2489                 if (GTK_WINDOW (toplevel)->group)
2490                         gtk_window_group_add_window (GTK_WINDOW (toplevel)->group,
2491                                                      GTK_WINDOW (view->goto_window));
2492                 else if (GTK_WINDOW (view->goto_window)->group)
2493                         gtk_window_group_remove_window (GTK_WINDOW (view->goto_window)->group,
2494                                                         GTK_WINDOW (view->goto_window));
2495                 return;
2496         }
2497
2498         view->goto_window = gtk_window_new (GTK_WINDOW_POPUP);
2499
2500         if (GTK_WINDOW (toplevel)->group)
2501                 gtk_window_group_add_window (GTK_WINDOW (toplevel)->group,
2502                                              GTK_WINDOW (view->goto_window));
2503
2504         gtk_window_set_modal (GTK_WINDOW (view->goto_window), TRUE);
2505
2506         g_signal_connect (view->goto_window, "delete_event",
2507                           G_CALLBACK (ev_view_goto_window_delete_event),
2508                           view);
2509         g_signal_connect (view->goto_window, "key_press_event",
2510                           G_CALLBACK (ev_view_goto_window_key_press_event),
2511                           view);
2512         g_signal_connect (view->goto_window, "button_press_event",
2513                           G_CALLBACK (ev_view_goto_window_button_press_event),
2514                           view);
2515
2516         frame = gtk_frame_new (NULL);
2517         gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_ETCHED_IN);
2518         gtk_container_add (GTK_CONTAINER (view->goto_window), frame);
2519         gtk_widget_show (frame);
2520
2521         hbox = gtk_hbox_new (FALSE, 0);
2522         gtk_container_set_border_width (GTK_CONTAINER (hbox), 3);
2523         gtk_container_add (GTK_CONTAINER (frame), hbox);
2524         gtk_widget_show (hbox);
2525
2526         label = gtk_label_new(_("Jump to page:"));
2527         gtk_box_pack_start (GTK_BOX (hbox), label, TRUE, TRUE, 3);
2528         gtk_widget_show (label);
2529         gtk_widget_realize (label);
2530
2531         view->goto_entry = gtk_entry_new ();
2532         g_signal_connect (view->goto_entry, "activate",
2533                           G_CALLBACK (ev_view_goto_entry_activate),
2534                           view);
2535         gtk_box_pack_start_defaults (GTK_BOX (hbox), view->goto_entry);
2536         gtk_widget_show (view->goto_entry);
2537         gtk_widget_realize (view->goto_entry);
2538 }
2539
2540 static void
2541 ev_view_goto_entry_grab_focus (EvView *view)
2542 {
2543         GtkWidgetClass *entry_parent_class;
2544
2545         entry_parent_class = g_type_class_peek_parent (GTK_ENTRY_GET_CLASS (view->goto_entry));
2546         (entry_parent_class->grab_focus) (view->goto_entry);
2547
2548         send_focus_change (view->goto_entry, TRUE);
2549 }
2550
2551 static void
2552 ev_view_goto_window_send_key_event (EvView   *view,
2553                                     GdkEvent *event)
2554 {
2555         GdkEventKey *new_event;
2556         GdkScreen   *screen;
2557
2558         /* Move goto window off screen */
2559         screen = gtk_widget_get_screen (GTK_WIDGET (view));
2560         gtk_window_move (GTK_WINDOW (view->goto_window),
2561                          gdk_screen_get_width (screen) + 1,
2562                          gdk_screen_get_height (screen) + 1);
2563         gtk_widget_show (view->goto_window);
2564
2565         new_event = (GdkEventKey *) gdk_event_copy (event);
2566         g_object_unref (new_event->window);
2567         new_event->window = g_object_ref (view->goto_window->window);
2568         gtk_widget_realize (view->goto_window);
2569
2570         gtk_widget_event (view->goto_window, (GdkEvent *)new_event);
2571         gdk_event_free ((GdkEvent *)new_event);
2572         gtk_widget_hide (view->goto_window);
2573 }
2574
2575 static gboolean
2576 ev_view_key_press_event (GtkWidget   *widget,
2577                          GdkEventKey *event)
2578 {
2579         EvView *view = EV_VIEW (widget);
2580         EvPresentationState current;
2581
2582         if (!view->presentation ||
2583             view->presentation_state == EV_PRESENTATION_END)
2584                 return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
2585
2586
2587         current = view->presentation_state;
2588
2589         switch (event->keyval) {
2590                 case GDK_b:
2591                 case GDK_B:
2592                         view->presentation_state =
2593                                 (view->presentation_state == EV_PRESENTATION_BLACK) ?
2594                                 EV_PRESENTATION_NORMAL : EV_PRESENTATION_BLACK;
2595                         break;
2596                 case GDK_w:
2597                 case GDK_W:
2598                         view->presentation_state =
2599                                 (view->presentation_state == EV_PRESENTATION_WHITE) ?
2600                                 EV_PRESENTATION_NORMAL : EV_PRESENTATION_WHITE;
2601                         break;
2602                 default:
2603                         if (view->presentation_state == EV_PRESENTATION_BLACK ||
2604                             view->presentation_state == EV_PRESENTATION_WHITE) {
2605                                 view->presentation_state = EV_PRESENTATION_NORMAL;
2606                         }
2607         }
2608
2609         if (current == view->presentation_state) {
2610                 if (ev_page_cache_get_n_pages (view->page_cache) > 1 &&
2611                     key_is_numeric (event->keyval)) {
2612                         gint x, y;
2613
2614                         ev_view_goto_window_create (view);
2615                         ev_view_goto_window_send_key_event (view, (GdkEvent *)event);
2616                         gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
2617                         gtk_window_move (GTK_WINDOW (view->goto_window), x, y);
2618                         gtk_widget_show (view->goto_window);
2619                         ev_view_goto_entry_grab_focus (view);
2620
2621                         return TRUE;
2622                 }
2623
2624                 return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
2625         }
2626
2627         switch (view->presentation_state) {
2628                 case EV_PRESENTATION_NORMAL:
2629                 case EV_PRESENTATION_BLACK:
2630                         gdk_window_set_background (widget->window,
2631                                                    &widget->style->black);
2632                         break;
2633                 case EV_PRESENTATION_WHITE:
2634                         gdk_window_set_background (widget->window,
2635                                                    &widget->style->white);
2636                         break;
2637                 default:
2638                         return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
2639         }
2640
2641         gtk_widget_queue_draw (widget);
2642         return TRUE;
2643 }
2644
2645 static gint
2646 ev_view_focus_in (GtkWidget     *widget,
2647                   GdkEventFocus *event)
2648 {
2649         if (EV_VIEW (widget)->pixbuf_cache)
2650                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
2651         gtk_widget_queue_draw (widget);
2652
2653         return FALSE;
2654 }
2655
2656 static gint
2657 ev_view_focus_out (GtkWidget     *widget,
2658                      GdkEventFocus *event)
2659 {
2660         if (EV_VIEW (widget)->goto_window)
2661                 ev_view_goto_window_hide (EV_VIEW (widget));
2662
2663         if (EV_VIEW (widget)->pixbuf_cache)
2664                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
2665         gtk_widget_queue_draw (widget);
2666
2667         return FALSE;
2668 }
2669
2670 static gboolean
2671 ev_view_leave_notify_event (GtkWidget *widget, GdkEventCrossing   *event)
2672 {
2673         EvView *view = EV_VIEW (widget);
2674
2675         ev_view_set_status (view, NULL);
2676
2677         if (view->cursor == EV_VIEW_CURSOR_LINK ||
2678             view->cursor == EV_VIEW_CURSOR_IBEAM)
2679                 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
2680
2681         if (view->link_tooltip) {
2682                 view->hovered_link = NULL;
2683                 ev_tooltip_deactivate (EV_TOOLTIP (view->link_tooltip));
2684         }
2685
2686         return FALSE;
2687 }
2688
2689 static gboolean
2690 ev_view_enter_notify_event (GtkWidget *widget, GdkEventCrossing   *event)
2691 {
2692         EvView *view = EV_VIEW (widget);
2693
2694         handle_link_over_xy (view, event->x, event->y);
2695
2696         return FALSE;
2697 }
2698
2699 static void
2700 ev_view_style_set (GtkWidget *widget,
2701                    GtkStyle  *old_style)
2702 {
2703         if (EV_VIEW (widget)->pixbuf_cache)
2704                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
2705
2706         GTK_WIDGET_CLASS (ev_view_parent_class)->style_set (widget, old_style);
2707 }
2708
2709 /*** Drawing ***/
2710
2711 static guint32
2712 ev_gdk_color_to_rgb (const GdkColor *color)
2713 {
2714   guint32 result;
2715   result = (0xff0000 | (color->red & 0xff00));
2716   result <<= 8;
2717   result |= ((color->green & 0xff00) | (color->blue >> 8));
2718   return result;
2719 }
2720
2721 static void
2722 draw_rubberband (GtkWidget *widget, GdkWindow *window,
2723                  const GdkRectangle *rect, guchar alpha)
2724 {
2725         GdkGC *gc;
2726         GdkPixbuf *pixbuf;
2727         GdkColor *fill_color_gdk;
2728         guint fill_color;
2729
2730         fill_color_gdk = gdk_color_copy (&GTK_WIDGET (widget)->style->base[GTK_STATE_SELECTED]);
2731         fill_color = ev_gdk_color_to_rgb (fill_color_gdk) << 8 | alpha;
2732
2733         pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE, 8,
2734                                  rect->width, rect->height);
2735         gdk_pixbuf_fill (pixbuf, fill_color);
2736
2737         gdk_draw_pixbuf (window, NULL, pixbuf,
2738                          0, 0,
2739                          rect->x - EV_VIEW (widget)->scroll_x, rect->y - EV_VIEW (widget)->scroll_y,
2740                          rect->width, rect->height,
2741                          GDK_RGB_DITHER_NONE,
2742                          0, 0);
2743
2744         g_object_unref (pixbuf);
2745
2746         gc = gdk_gc_new (window);
2747         gdk_gc_set_rgb_fg_color (gc, fill_color_gdk);
2748         gdk_draw_rectangle (window, gc, FALSE,
2749                             rect->x - EV_VIEW (widget)->scroll_x, rect->y - EV_VIEW (widget)->scroll_y,
2750                             rect->width - 1,
2751                             rect->height - 1);
2752         g_object_unref (gc);
2753
2754         gdk_color_free (fill_color_gdk);
2755 }
2756
2757
2758 static void
2759 highlight_find_results (EvView *view, int page)
2760 {
2761         EvDocumentFind *find;
2762         int i, results = 0;
2763
2764         g_return_if_fail (EV_IS_DOCUMENT_FIND (view->document));
2765
2766         find = EV_DOCUMENT_FIND (view->document);
2767
2768         results = ev_document_find_get_n_results (find, page);
2769
2770         for (i = 0; i < results; i++) {
2771                 EvRectangle rectangle;
2772                 GdkRectangle view_rectangle;
2773                 guchar alpha;
2774
2775                 if (i == view->find_result && page == view->current_page) {
2776                         alpha = 0x90;
2777                 } else {
2778                         alpha = 0x20;
2779                 }
2780
2781                 ev_document_find_get_result (find, page, i, &rectangle);
2782                 doc_rect_to_view_rect (view, page, &rectangle, &view_rectangle);
2783                 draw_rubberband (GTK_WIDGET (view), GTK_WIDGET(view)->window,
2784                                  &view_rectangle, alpha);
2785         }
2786 }
2787
2788 static void
2789 draw_loading_text (EvView       *view,
2790                    GdkRectangle *page_area,
2791                    GdkRectangle *expose_area)
2792 {
2793         cairo_t *cr;
2794         gint     width, height;
2795
2796         /* Don't annoy users with loading messages during presentations.
2797          * FIXME: Temporary "workaround" for
2798          * http://bugzilla.gnome.org/show_bug.cgi?id=320352 */
2799         if (view->presentation)
2800                 return;
2801
2802         if (!view->loading_text) {
2803                 const gchar *loading_text;
2804                 PangoLayout *layout;
2805                 PangoFontDescription *font_desc;
2806                 PangoRectangle logical_rect;
2807                 gdouble real_scale;
2808                 gint target_width;
2809
2810                 loading_text = _("Loading...");
2811
2812                 ev_document_fc_mutex_lock ();
2813
2814                 layout = gtk_widget_create_pango_layout (GTK_WIDGET (view), loading_text);
2815
2816                 font_desc = pango_font_description_new ();
2817
2818                 /* We set the font to be 10 points, get the size, and scale appropriately */
2819                 pango_font_description_set_size (font_desc, 10 * PANGO_SCALE);
2820                 pango_layout_set_font_description (layout, font_desc);
2821                 pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
2822
2823                 /* Make sure we fit the middle of the page */
2824                 target_width = MAX (page_area->width / 2, 1);
2825                 real_scale = ((double)target_width / (double) logical_rect.width) * (PANGO_SCALE * 10);
2826                 pango_font_description_set_size (font_desc, (int)real_scale);
2827                 pango_layout_set_font_description (layout, font_desc);
2828                 pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
2829
2830                 view->loading_text = cairo_image_surface_create (CAIRO_FORMAT_ARGB32,
2831                                                                  logical_rect.width,
2832                                                                  logical_rect.height);
2833                 cr = cairo_create (view->loading_text);
2834                 cairo_set_source_rgb (cr,
2835                                       155 / (double)255,
2836                                       155 / (double)255,
2837                                       155 / (double)255);
2838                 pango_cairo_show_layout (cr, layout);
2839                 cairo_destroy (cr);
2840
2841                 pango_font_description_free (font_desc);
2842                 g_object_unref (layout);
2843
2844                 ev_document_fc_mutex_unlock ();
2845         }
2846
2847         width = cairo_image_surface_get_width (view->loading_text) / 2;
2848         height = (page_area->height - cairo_image_surface_get_height (view->loading_text)) / 2;
2849
2850         cr = gdk_cairo_create (GTK_WIDGET (view)->window);
2851         cairo_set_source_surface (cr, view->loading_text,
2852                                   page_area->x + width,
2853                                   page_area->y + height);
2854         cairo_paint (cr);
2855         cairo_destroy (cr);
2856 }
2857
2858 static void
2859 draw_one_page (EvView          *view,
2860                gint             page,
2861                GdkRectangle    *page_area,
2862                GtkBorder       *border,
2863                GdkRectangle    *expose_area,
2864                gboolean        *page_ready)
2865 {
2866         gint width, height;
2867         GdkPixbuf *current_pixbuf;
2868         GdkRectangle overlap;
2869         GdkRectangle real_page_area;
2870         EvViewSelection *selection;
2871         gint current_page;
2872
2873         g_assert (view->document);
2874
2875         if (! gdk_rectangle_intersect (page_area, expose_area, &overlap))
2876                 return;
2877
2878         current_page = ev_page_cache_get_current_page (view->page_cache);
2879         selection = find_selection_for_page (view, page);
2880         ev_page_cache_get_size (view->page_cache,
2881                                 page, view->rotation,
2882                                 view->scale,
2883                                 &width, &height);
2884         /* Render the document itself */
2885         real_page_area = *page_area;
2886
2887         real_page_area.x += border->left;
2888         real_page_area.y += border->top;
2889         real_page_area.width -= (border->left + border->right);
2890         real_page_area.height -= (border->top + border->bottom);
2891         *page_ready = TRUE;
2892
2893         if (!view->presentation) {
2894                 ev_document_misc_paint_one_page (GTK_WIDGET(view)->window,
2895                                                  GTK_WIDGET (view),
2896                                                  page_area, border,
2897                                                  page == current_page);
2898         }
2899
2900         if (gdk_rectangle_intersect (&real_page_area, expose_area, &overlap)) {
2901                 GdkPixbuf *selection_pixbuf = NULL;
2902                 GdkPixbuf *scaled_image;
2903                 GdkPixbuf *scaled_selection;
2904
2905                 current_pixbuf = ev_pixbuf_cache_get_pixbuf (view->pixbuf_cache, page);
2906
2907                 /* Get the selection pixbuf iff we have something to draw */
2908                 if (current_pixbuf && view->selection_mode == EV_VIEW_SELECTION_TEXT && selection)
2909                         selection_pixbuf = ev_pixbuf_cache_get_selection_pixbuf (view->pixbuf_cache,
2910                                                                                  page,
2911                                                                                  view->scale,
2912                                                                                  NULL);
2913
2914                 if (current_pixbuf == NULL)
2915                         scaled_image = NULL;
2916                 else if (width == gdk_pixbuf_get_width (current_pixbuf) &&
2917                          height == gdk_pixbuf_get_height (current_pixbuf))
2918                         scaled_image = g_object_ref (current_pixbuf);
2919                 else
2920                         /* FIXME: We don't want to scale the whole area, just the right
2921                          * area of it */
2922                         scaled_image = gdk_pixbuf_scale_simple (current_pixbuf,
2923                                                                 width, height,
2924                                                                 GDK_INTERP_NEAREST);
2925
2926                 if (selection_pixbuf == NULL)
2927                         scaled_selection = NULL;
2928                 else if (width == gdk_pixbuf_get_width (selection_pixbuf) &&
2929                          height == gdk_pixbuf_get_height (selection_pixbuf))
2930                         scaled_selection = g_object_ref (selection_pixbuf);
2931                 else
2932                         /* FIXME: We don't want to scale the whole area, just the right
2933                          * area of it */
2934                         scaled_selection = gdk_pixbuf_scale_simple (selection_pixbuf,
2935                                                                     width, height,
2936                                                                     GDK_INTERP_NEAREST);
2937
2938                 if (scaled_image) {
2939                         gdk_draw_pixbuf (GTK_WIDGET(view)->window,
2940                                          GTK_WIDGET (view)->style->fg_gc[GTK_STATE_NORMAL],
2941                                          scaled_image,
2942                                          overlap.x - real_page_area.x,
2943                                          overlap.y - real_page_area.y,
2944                                          overlap.x, overlap.y,
2945                                          overlap.width, overlap.height,
2946                                          GDK_RGB_DITHER_NORMAL,
2947                                          0, 0);
2948                         g_object_unref (scaled_image);
2949                 } else {
2950                         draw_loading_text (view,
2951                                            &real_page_area,
2952                                            expose_area);
2953                         *page_ready = FALSE;
2954                 }
2955
2956                 if (scaled_selection) {
2957                         gdk_draw_pixbuf (GTK_WIDGET(view)->window,
2958                                          GTK_WIDGET (view)->style->fg_gc[GTK_STATE_NORMAL],
2959                                          scaled_selection,
2960                                          overlap.x - real_page_area.x,
2961                                          overlap.y - real_page_area.y,
2962                                          overlap.x, overlap.y,
2963                                          overlap.width, overlap.height,
2964                                          GDK_RGB_DITHER_NORMAL,
2965                                          0, 0);
2966                         g_object_unref (scaled_selection);
2967                 }
2968         }
2969 }
2970
2971 /*** GObject functions ***/
2972
2973 static void
2974 ev_view_finalize (GObject *object)
2975 {
2976         EvView *view = EV_VIEW (object);
2977
2978         g_free (view->status);
2979         g_free (view->find_status);
2980
2981         clear_selection (view);
2982
2983         if (view->image_dnd_info.image)
2984                 g_object_unref (view->image_dnd_info.image);
2985         view->image_dnd_info.image = NULL;
2986
2987         G_OBJECT_CLASS (ev_view_parent_class)->finalize (object);
2988 }
2989
2990 static void
2991 ev_view_destroy (GtkObject *object)
2992 {
2993         EvView *view = EV_VIEW (object);
2994
2995         if (view->document) {
2996                 g_object_unref (view->document);
2997                 view->document = NULL;
2998         }
2999
3000         if (view->pixbuf_cache) {
3001                 g_object_unref (view->pixbuf_cache);
3002                 view->pixbuf_cache = NULL;
3003         }
3004
3005         if (view->link_tooltip) {
3006                 gtk_widget_destroy (view->link_tooltip);
3007                 view->link_tooltip = NULL;
3008         }
3009
3010         if (view->goto_window) {
3011                 gtk_widget_destroy (view->goto_window);
3012                 view->goto_window = NULL;
3013                 view->goto_entry = NULL;
3014         }
3015
3016         if (view->selection_scroll_id) {
3017             g_source_remove (view->selection_scroll_id);
3018             view->selection_scroll_id = 0;
3019         }
3020
3021         if (view->selection_update_id) {
3022             g_source_remove (view->selection_update_id);
3023             view->selection_update_id = 0;
3024         }
3025
3026         if (view->loading_text) {
3027                 cairo_surface_destroy (view->loading_text);
3028                 view->loading_text = NULL;
3029         }
3030
3031         ev_view_presentation_transition_stop (view);
3032
3033         ev_view_set_scroll_adjustments (view, NULL, NULL);
3034
3035         GTK_OBJECT_CLASS (ev_view_parent_class)->destroy (object);
3036 }
3037
3038 static void
3039 ev_view_set_property (GObject      *object,
3040                       guint         prop_id,
3041                       const GValue *value,
3042                       GParamSpec   *pspec)
3043 {
3044         EvView *view = EV_VIEW (object);
3045
3046         switch (prop_id) {
3047                 case PROP_CONTINUOUS:
3048                         ev_view_set_continuous (view, g_value_get_boolean (value));
3049                         break;
3050                 case PROP_DUAL_PAGE:
3051                         ev_view_set_dual_page (view, g_value_get_boolean (value));
3052                         break;
3053                 case PROP_FULLSCREEN:
3054                         ev_view_set_fullscreen (view, g_value_get_boolean (value));
3055                         break;
3056                 case PROP_PRESENTATION:
3057                         ev_view_set_presentation (view, g_value_get_boolean (value));
3058                         break;
3059                 case PROP_SIZING_MODE:
3060                         ev_view_set_sizing_mode (view, g_value_get_enum (value));
3061                         break;
3062                 case PROP_ZOOM:
3063                         ev_view_set_zoom (view, g_value_get_double (value), FALSE);
3064                         break;
3065                 case PROP_ROTATION:
3066                         ev_view_set_rotation (view, g_value_get_int (value));
3067                         break;
3068                 default:
3069                         G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
3070         }
3071 }
3072
3073 static AtkObject *
3074 ev_view_get_accessible (GtkWidget *widget)
3075 {
3076         static gboolean first_time = TRUE;
3077
3078         if (first_time) {
3079                 AtkObjectFactory *factory;
3080                 AtkRegistry *registry;
3081                 GType derived_type;
3082                 GType derived_atk_type;
3083
3084                 /*
3085                  * Figure out whether accessibility is enabled by looking at the
3086                  * type of the accessible object which would be created for
3087                  * the parent type of EvView.
3088                  */
3089                 derived_type = g_type_parent (EV_TYPE_VIEW);
3090
3091                 registry = atk_get_default_registry ();
3092                 factory = atk_registry_get_factory (registry,
3093                                                     derived_type);
3094                 derived_atk_type = atk_object_factory_get_accessible_type (factory);
3095                 if (g_type_is_a (derived_atk_type, GTK_TYPE_ACCESSIBLE))
3096                         atk_registry_set_factory_type (registry,
3097                                                        EV_TYPE_VIEW,
3098                                                        ev_view_accessible_factory_get_type ());
3099                 first_time = FALSE;
3100         }
3101         return GTK_WIDGET_CLASS (ev_view_parent_class)->get_accessible (widget);
3102 }
3103
3104 static void
3105 ev_view_get_property (GObject *object,
3106                       guint prop_id,
3107                       GValue *value,
3108                       GParamSpec *pspec)
3109 {
3110         EvView *view = EV_VIEW (object);
3111
3112         switch (prop_id) {
3113                 case PROP_STATUS:
3114                         g_value_set_string (value, view->status);
3115                         break;
3116                 case PROP_FIND_STATUS:
3117                         g_value_set_string (value, view->status);
3118                         break;
3119                 case PROP_CONTINUOUS:
3120                         g_value_set_boolean (value, view->continuous);
3121                         break;
3122                 case PROP_DUAL_PAGE:
3123                         g_value_set_boolean (value, view->dual_page);
3124                         break;
3125                 case PROP_FULLSCREEN:
3126                         g_value_set_boolean (value, view->fullscreen);
3127                         break;
3128                 case PROP_PRESENTATION:
3129                         g_value_set_boolean (value, view->presentation);
3130                         break;
3131                 case PROP_SIZING_MODE:
3132                         g_value_set_enum (value, view->sizing_mode);
3133                         break;
3134                 case PROP_ZOOM:
3135                         g_value_set_double (value, view->scale);
3136                         break;
3137                 case PROP_ROTATION:
3138                         g_value_set_int (value, view->rotation);
3139                         break;
3140                 case PROP_HAS_SELECTION:
3141                         g_value_set_boolean (value,
3142                                              view->selection_info.selections != NULL);
3143                         break;
3144                 default:
3145                         G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
3146         }
3147 }
3148
3149 static void
3150 ev_view_class_init (EvViewClass *class)
3151 {
3152         GObjectClass *object_class = G_OBJECT_CLASS (class);
3153         GtkObjectClass *gtk_object_class = GTK_OBJECT_CLASS (class);
3154         GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
3155         GtkBindingSet *binding_set;
3156
3157         object_class->finalize = ev_view_finalize;
3158         object_class->set_property = ev_view_set_property;
3159         object_class->get_property = ev_view_get_property;
3160
3161         widget_class->expose_event = ev_view_expose_event;
3162         widget_class->button_press_event = ev_view_button_press_event;
3163         widget_class->motion_notify_event = ev_view_motion_notify_event;
3164         widget_class->button_release_event = ev_view_button_release_event;
3165         widget_class->key_press_event = ev_view_key_press_event;
3166         widget_class->focus_in_event = ev_view_focus_in;
3167         widget_class->focus_out_event = ev_view_focus_out;
3168         widget_class->get_accessible = ev_view_get_accessible;
3169         widget_class->size_request = ev_view_size_request;
3170         widget_class->size_allocate = ev_view_size_allocate;
3171         widget_class->realize = ev_view_realize;
3172         widget_class->scroll_event = ev_view_scroll_event;
3173         widget_class->enter_notify_event = ev_view_enter_notify_event;
3174         widget_class->leave_notify_event = ev_view_leave_notify_event;
3175         widget_class->style_set = ev_view_style_set;
3176         widget_class->drag_data_get = ev_view_drag_data_get;
3177         widget_class->drag_motion = ev_view_drag_motion;
3178         widget_class->drag_data_received = ev_view_drag_data_received;
3179         widget_class->popup_menu = ev_view_popup_menu;
3180         gtk_object_class->destroy = ev_view_destroy;
3181
3182         class->set_scroll_adjustments = ev_view_set_scroll_adjustments;
3183         class->binding_activated = ev_view_scroll;
3184
3185         widget_class->set_scroll_adjustments_signal =
3186             g_signal_new ("set-scroll-adjustments",
3187                           G_OBJECT_CLASS_TYPE (object_class),
3188                           G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
3189                           G_STRUCT_OFFSET (EvViewClass, set_scroll_adjustments),
3190                           NULL, NULL,
3191                           ev_marshal_VOID__OBJECT_OBJECT,
3192                           G_TYPE_NONE, 2,
3193                           GTK_TYPE_ADJUSTMENT,
3194                           GTK_TYPE_ADJUSTMENT);
3195
3196         signals[SIGNAL_BINDING_ACTIVATED] = g_signal_new ("binding_activated",
3197                          G_TYPE_FROM_CLASS (object_class),
3198                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
3199                          G_STRUCT_OFFSET (EvViewClass, binding_activated),
3200                          NULL, NULL,
3201                          ev_marshal_VOID__ENUM_BOOLEAN,
3202                          G_TYPE_NONE, 2,
3203                          GTK_TYPE_SCROLL_TYPE,
3204                          G_TYPE_BOOLEAN);
3205
3206         signals[SIGNAL_ZOOM_INVALID] = g_signal_new ("zoom-invalid",
3207                          G_TYPE_FROM_CLASS (object_class),
3208                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
3209                          G_STRUCT_OFFSET (EvViewClass, zoom_invalid),
3210                          NULL, NULL,
3211                          ev_marshal_VOID__VOID,
3212                          G_TYPE_NONE, 0, G_TYPE_NONE);
3213         signals[SIGNAL_HANDLE_LINK] = g_signal_new ("handle-link",
3214                          G_TYPE_FROM_CLASS (object_class),
3215                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
3216                          G_STRUCT_OFFSET (EvViewClass, handle_link),
3217                          NULL, NULL,
3218                          g_cclosure_marshal_VOID__OBJECT,
3219                          G_TYPE_NONE, 1,
3220                          G_TYPE_OBJECT);
3221         signals[SIGNAL_EXTERNAL_LINK] = g_signal_new ("external-link",
3222                          G_TYPE_FROM_CLASS (object_class),
3223                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
3224                          G_STRUCT_OFFSET (EvViewClass, external_link),
3225                          NULL, NULL,
3226                          g_cclosure_marshal_VOID__OBJECT,
3227                          G_TYPE_NONE, 1,
3228                          G_TYPE_OBJECT);
3229         signals[SIGNAL_POPUP_MENU] = g_signal_new ("popup",
3230                          G_TYPE_FROM_CLASS (object_class),
3231                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
3232                          G_STRUCT_OFFSET (EvViewClass, popup_menu),
3233                          NULL, NULL,
3234                          g_cclosure_marshal_VOID__OBJECT,
3235                          G_TYPE_NONE, 1,
3236                          G_TYPE_OBJECT);
3237
3238         g_object_class_install_property (object_class,
3239                                          PROP_STATUS,
3240                                          g_param_spec_string ("status",
3241                                                               "Status Message",
3242                                                               "The status message",
3243                                                               NULL,
3244                                                               G_PARAM_READABLE));
3245
3246         g_object_class_install_property (object_class,
3247                                          PROP_FIND_STATUS,
3248                                          g_param_spec_string ("find-status",
3249                                                               "Find Status Message",
3250                                                               "The find status message",
3251                                                               NULL,
3252                                                               G_PARAM_READABLE));
3253
3254         g_object_class_install_property (object_class,
3255                                          PROP_CONTINUOUS,
3256                                          g_param_spec_boolean ("continuous",
3257                                                                "Continuous",
3258                                                                "Continuous scrolling mode",
3259                                                                TRUE,
3260                                                                G_PARAM_READWRITE));
3261
3262         g_object_class_install_property (object_class,
3263                                          PROP_DUAL_PAGE,
3264                                          g_param_spec_boolean ("dual-page",
3265                                                                "Dual Page",
3266                                                                "Two pages visible at once",
3267                                                                FALSE,
3268                                                                G_PARAM_READWRITE));
3269         g_object_class_install_property (object_class,
3270                                          PROP_FULLSCREEN,
3271                                          g_param_spec_boolean ("fullscreen",
3272                                                                "Full Screen",
3273                                                                "Draw page in a fullscreen fashion",
3274                                                                FALSE,
3275                                                                G_PARAM_READWRITE));
3276         g_object_class_install_property (object_class,
3277                                          PROP_PRESENTATION,
3278                                          g_param_spec_boolean ("presentation",
3279                                                                "Presentation",
3280                                                                "Draw page in presentation mode",
3281                                                                TRUE,
3282                                                                G_PARAM_READWRITE));
3283
3284         g_object_class_install_property (object_class,
3285                                          PROP_SIZING_MODE,
3286                                          g_param_spec_enum ("sizing-mode",
3287                                                             "Sizing Mode",
3288                                                             "Sizing Mode",
3289                                                             EV_TYPE_SIZING_MODE,
3290                                                             EV_SIZING_FIT_WIDTH,
3291                                                             G_PARAM_READWRITE));
3292
3293         g_object_class_install_property (object_class,
3294                                          PROP_ZOOM,
3295                                          g_param_spec_double ("zoom",
3296                                                               "Zoom factor",
3297                                                               "Zoom factor",
3298                                                               0,
3299                                                               G_MAXDOUBLE,
3300                                                               1.0,
3301                                                               G_PARAM_READWRITE));
3302         g_object_class_install_property (object_class,
3303                                          PROP_ROTATION,
3304                                          g_param_spec_double ("rotation",
3305                                                               "Rotation",
3306                                                               "Rotation",
3307                                                               0,
3308                                                               360,
3309                                                               0,
3310                                                               G_PARAM_READWRITE));
3311         g_object_class_install_property (object_class,
3312                                          PROP_HAS_SELECTION,
3313                                          g_param_spec_boolean ("has-selection",
3314                                                                "Has selection",
3315                                                                "The view has selections",
3316                                                                FALSE,
3317                                                                G_PARAM_READABLE));
3318
3319         binding_set = gtk_binding_set_by_class (class);
3320
3321         add_scroll_binding_keypad (binding_set, GDK_Left,  0, EV_SCROLL_STEP_BACKWARD, TRUE);
3322         add_scroll_binding_keypad (binding_set, GDK_Right, 0, EV_SCROLL_STEP_FORWARD,  TRUE);
3323         add_scroll_binding_keypad (binding_set, GDK_Left,  GDK_MOD1_MASK, EV_SCROLL_STEP_DOWN, TRUE);
3324         add_scroll_binding_keypad (binding_set, GDK_Right, GDK_MOD1_MASK, EV_SCROLL_STEP_UP,  TRUE);
3325         add_scroll_binding_keypad (binding_set, GDK_Up,    0, EV_SCROLL_STEP_BACKWARD, FALSE);
3326         add_scroll_binding_keypad (binding_set, GDK_Down,  0, EV_SCROLL_STEP_FORWARD,  FALSE);
3327         add_scroll_binding_keypad (binding_set, GDK_Up,    GDK_MOD1_MASK, EV_SCROLL_STEP_DOWN, FALSE);
3328         add_scroll_binding_keypad (binding_set, GDK_Down,  GDK_MOD1_MASK, EV_SCROLL_STEP_UP,  FALSE);
3329 }
3330
3331 static void
3332 ev_view_init (EvView *view)
3333 {
3334         GTK_WIDGET_SET_FLAGS (view, GTK_CAN_FOCUS);
3335
3336         view->spacing = 5;
3337         view->scale = 1.0;
3338         view->current_page = 0;
3339         view->pressed_button = -1;
3340         view->cursor = EV_VIEW_CURSOR_NORMAL;
3341         view->drag_info.in_drag = FALSE;
3342         view->selection_info.selections = NULL;
3343         view->selection_info.in_selection = FALSE;
3344         view->selection_info.in_drag = FALSE;
3345         view->selection_mode = EV_VIEW_SELECTION_TEXT;
3346         view->continuous = TRUE;
3347         view->dual_page = FALSE;
3348         view->presentation = FALSE;
3349         view->presentation_state = EV_PRESENTATION_NORMAL;
3350         view->fullscreen = FALSE;
3351         view->sizing_mode = EV_SIZING_FIT_WIDTH;
3352         view->pending_scroll = SCROLL_TO_KEEP_POSITION;
3353         view->jump_to_find_result = TRUE;
3354
3355         gtk_drag_dest_set (GTK_WIDGET (view),
3356                            GTK_DEST_DEFAULT_ALL,
3357                            view_drop_targets,
3358                            G_N_ELEMENTS (view_drop_targets),
3359                            GDK_ACTION_COPY);
3360 }
3361
3362 /*** Callbacks ***/
3363
3364 static void
3365 find_changed_cb (EvDocument *document, int page, EvView *view)
3366 {
3367         double percent;
3368         int n_pages;
3369
3370         percent = ev_document_find_get_progress
3371                         (EV_DOCUMENT_FIND (view->document));
3372         n_pages = ev_page_cache_get_n_pages (view->page_cache);
3373
3374         if (view->jump_to_find_result == TRUE) {
3375                 jump_to_find_page (view, EV_VIEW_FIND_NEXT, 0);
3376                 jump_to_find_result (view);
3377         }
3378         update_find_status_message (view, percent * n_pages >= n_pages - 1 );
3379         if (view->current_page == page)
3380                 gtk_widget_queue_draw (GTK_WIDGET (view));
3381 }
3382
3383 static void
3384 job_finished_cb (EvPixbufCache *pixbuf_cache,
3385                  EvView        *view)
3386 {
3387         gtk_widget_queue_draw (GTK_WIDGET (view));
3388 }
3389
3390 static void
3391 page_changed_cb (EvPageCache *page_cache,
3392                  int          new_page,
3393                  EvView      *view)
3394 {
3395         if (view->current_page != new_page) {
3396                 view->current_page = new_page;
3397                 view->pending_scroll = SCROLL_TO_PAGE_POSITION;
3398                 if (view->presentation)
3399                         ev_view_presentation_transition_start (view);
3400                 gtk_widget_queue_resize (GTK_WIDGET (view));
3401         } else {
3402                 gtk_widget_queue_draw (GTK_WIDGET (view));
3403         }
3404
3405         if (EV_IS_DOCUMENT_FIND (view->document)) {
3406                 view->find_result = 0;
3407                 update_find_status_message (view, TRUE);
3408         }
3409 }
3410
3411 static void on_adjustment_value_changed (GtkAdjustment  *adjustment,
3412                                          EvView *view)
3413 {
3414         int dx = 0, dy = 0;
3415
3416         if (! GTK_WIDGET_REALIZED (view))
3417                 return;
3418
3419         if (view->hadjustment) {
3420                 dx = view->scroll_x - (int) view->hadjustment->value;
3421                 view->scroll_x = (int) view->hadjustment->value;
3422         } else {
3423                 view->scroll_x = 0;
3424         }
3425
3426         if (view->vadjustment) {
3427                 dy = view->scroll_y - (int) view->vadjustment->value;
3428                 view->scroll_y = (int) view->vadjustment->value;
3429         } else {
3430                 view->scroll_y = 0;
3431         }
3432
3433
3434         if (view->pending_resize)
3435                 gtk_widget_queue_draw (GTK_WIDGET (view));
3436         else
3437                 gdk_window_scroll (GTK_WIDGET (view)->window, dx, dy);
3438
3439
3440         if (view->document)
3441                 view_update_range_and_current_page (view);
3442 }
3443
3444 GtkWidget*
3445 ev_view_new (void)
3446 {
3447         GtkWidget *view;
3448
3449         view = g_object_new (EV_TYPE_VIEW, NULL);
3450
3451         return view;
3452 }
3453
3454 static void
3455 setup_caches (EvView *view)
3456 {
3457         view->page_cache = ev_page_cache_get (view->document);
3458         g_signal_connect (view->page_cache, "page-changed", G_CALLBACK (page_changed_cb), view);
3459         view->pixbuf_cache = ev_pixbuf_cache_new (GTK_WIDGET (view), view->document);
3460         g_signal_connect (view->pixbuf_cache, "job-finished", G_CALLBACK (job_finished_cb), view);
3461 }
3462
3463 static void
3464 clear_caches (EvView *view)
3465 {
3466         if (view->pixbuf_cache) {
3467                 g_object_unref (view->pixbuf_cache);
3468                 view->pixbuf_cache = NULL;
3469         }
3470
3471         if (view->page_cache) {
3472                 view->page_cache = NULL;
3473         }
3474 }
3475
3476 void
3477 ev_view_set_loading (EvView       *view,
3478                      gboolean      loading)
3479 {
3480         view->loading = loading;
3481         gtk_widget_queue_draw (GTK_WIDGET (view));
3482 }
3483
3484 void
3485 ev_view_set_document (EvView     *view,
3486                       EvDocument *document)
3487 {
3488         g_return_if_fail (EV_IS_VIEW (view));
3489
3490         view->loading = FALSE;
3491
3492         if (document != view->document) {
3493                 clear_caches (view);
3494
3495                 if (view->document) {
3496                         g_signal_handlers_disconnect_by_func (view->document,
3497                                                               find_changed_cb,
3498                                                               view);
3499                         g_object_unref (view->document);
3500                         view->page_cache = NULL;
3501
3502                 }
3503
3504                 view->document = document;
3505                 view->find_result = 0;
3506
3507                 if (view->document) {
3508                         g_object_ref (view->document);
3509                         if (EV_IS_DOCUMENT_FIND (view->document)) {
3510                                 g_signal_connect (view->document,
3511                                                   "find_changed",
3512                                                   G_CALLBACK (find_changed_cb),
3513                                                   view);
3514                         }
3515
3516                         setup_caches (view);
3517                 }
3518
3519                 gtk_widget_queue_resize (GTK_WIDGET (view));
3520         }
3521 }
3522
3523 /*** Zoom and sizing mode ***/
3524
3525 #define EPSILON 0.0000001
3526 void
3527 ev_view_set_zoom (EvView   *view,
3528                   double    factor,
3529                   gboolean  relative)
3530 {
3531         double scale;
3532
3533         if (relative)
3534                 scale = view->scale * factor;
3535         else
3536                 scale = factor;
3537
3538         scale = CLAMP (scale, view->min_scale, view->max_scale);
3539
3540         if (ABS (view->scale - scale) < EPSILON)
3541                 return;
3542
3543         if (view->loading_text) {
3544                 cairo_surface_destroy (view->loading_text);
3545                 view->loading_text = NULL;
3546         }
3547
3548         view->scale = scale;
3549         view->pending_resize = TRUE;
3550
3551         gtk_widget_queue_resize (GTK_WIDGET (view));
3552
3553         g_object_notify (G_OBJECT (view), "zoom");
3554 }
3555
3556 double
3557 ev_view_get_zoom (EvView *view)
3558 {
3559         return view->scale;
3560 }
3561
3562 void
3563 ev_view_set_screen_dpi (EvView  *view,
3564                         gdouble  dpi)
3565 {
3566         g_return_if_fail (EV_IS_VIEW (view));
3567         g_return_if_fail (dpi > 0);
3568
3569         view->dpi = dpi;
3570         view->min_scale = MIN_SCALE * dpi / 72.0;
3571         view->max_scale = MAX_SCALE * dpi / 72.0;
3572 }
3573
3574 gboolean
3575 ev_view_get_continuous (EvView *view)
3576 {
3577         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
3578
3579         return view->continuous;
3580 }
3581
3582 void
3583 ev_view_set_continuous (EvView   *view,
3584                         gboolean  continuous)
3585 {
3586         g_return_if_fail (EV_IS_VIEW (view));
3587
3588         continuous = continuous != FALSE;
3589
3590         if (view->continuous != continuous) {
3591                 view->continuous = continuous;
3592                 view->pending_scroll = SCROLL_TO_PAGE_POSITION;
3593                 gtk_widget_queue_resize (GTK_WIDGET (view));
3594         }
3595
3596         g_object_notify (G_OBJECT (view), "continuous");
3597 }
3598
3599 gboolean
3600 ev_view_get_dual_page (EvView *view)
3601 {
3602         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
3603
3604         return view->dual_page;
3605 }
3606
3607 void
3608 ev_view_set_dual_page (EvView   *view,
3609                        gboolean  dual_page)
3610 {
3611         g_return_if_fail (EV_IS_VIEW (view));
3612
3613         dual_page = dual_page != FALSE;
3614
3615         if (view->dual_page == dual_page)
3616                 return;
3617
3618         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
3619         view->dual_page = dual_page;
3620         /* FIXME: if we're keeping the pixbuf cache around, we should extend the
3621          * preload_cache_size to be 2 if dual_page is set.
3622          */
3623         gtk_widget_queue_resize (GTK_WIDGET (view));
3624
3625         g_object_notify (G_OBJECT (view), "dual-page");
3626 }
3627
3628 void
3629 ev_view_set_fullscreen (EvView   *view,
3630                          gboolean  fullscreen)
3631 {
3632         g_return_if_fail (EV_IS_VIEW (view));
3633
3634         fullscreen = fullscreen != FALSE;
3635
3636         if (view->fullscreen == fullscreen)
3637                 return;
3638
3639         view->fullscreen = fullscreen;
3640         gtk_widget_queue_resize (GTK_WIDGET (view));
3641
3642         g_object_notify (G_OBJECT (view), "fullscreen");
3643 }
3644
3645 gboolean
3646 ev_view_get_fullscreen (EvView *view)
3647 {
3648         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
3649
3650         return view->fullscreen;
3651 }
3652
3653 void
3654 ev_view_set_presentation (EvView   *view,
3655                           gboolean  presentation)
3656 {
3657         g_return_if_fail (EV_IS_VIEW (view));
3658
3659         presentation = presentation != FALSE;
3660
3661         if (view->presentation == presentation)
3662                 return;
3663
3664         if (!presentation)
3665                 view->presentation_state = EV_PRESENTATION_NORMAL;
3666
3667         view->presentation = presentation;
3668         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
3669
3670         if (presentation) {
3671                 view->sizing_mode_saved = view->sizing_mode;
3672                 view->scale_saved = view->scale;
3673                 ev_view_set_sizing_mode (view, EV_SIZING_BEST_FIT);
3674         } else {
3675                 ev_view_set_sizing_mode (view, view->sizing_mode_saved);
3676                 ev_view_set_zoom (view, view->scale_saved, FALSE);
3677         }
3678
3679         gtk_widget_queue_resize (GTK_WIDGET (view));
3680
3681         if (presentation)
3682                 ev_view_presentation_transition_start (view);
3683         else
3684                 ev_view_presentation_transition_stop (view);
3685
3686         if (GTK_WIDGET_REALIZED (view)) {
3687                 if (view->presentation)
3688                         gdk_window_set_background (GTK_WIDGET(view)->window,
3689                                                    &GTK_WIDGET (view)->style->black);
3690                 else
3691                         gdk_window_set_background (GTK_WIDGET(view)->window,
3692                                                    &GTK_WIDGET (view)->style->mid [GTK_STATE_NORMAL]);
3693         }
3694
3695         g_object_notify (G_OBJECT (view), "presentation");
3696 }
3697
3698 gboolean
3699 ev_view_get_presentation (EvView *view)
3700 {
3701         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
3702
3703         return view->presentation;
3704 }
3705
3706 static gboolean
3707 transition_next_page (EvView *view)
3708 {
3709         ev_view_next_page (view);
3710
3711         return FALSE;
3712 }
3713
3714 static void
3715 ev_view_presentation_transition_stop (EvView *view)
3716 {
3717         if (view->trans_timeout_id > 0)
3718                 g_source_remove (view->trans_timeout_id);
3719         view->trans_timeout_id = 0;
3720 }
3721
3722 static void
3723 ev_view_presentation_transition_start (EvView *view)
3724 {
3725         gdouble duration;
3726
3727         if (!EV_IS_DOCUMENT_TRANSITION (view->document))
3728                 return;
3729
3730         ev_view_presentation_transition_stop (view);
3731
3732         duration = ev_document_transition_get_page_duration (EV_DOCUMENT_TRANSITION (view->document),
3733                                                              view->current_page);
3734         if (duration > 0)
3735                 view->trans_timeout_id = g_timeout_add (duration * 1000,
3736                                                         (GSourceFunc) transition_next_page,
3737                                                         view);
3738 }
3739
3740 void
3741 ev_view_set_sizing_mode (EvView       *view,
3742                          EvSizingMode  sizing_mode)
3743 {
3744         g_return_if_fail (EV_IS_VIEW (view));
3745
3746         if (view->sizing_mode == sizing_mode)
3747                 return;
3748
3749         view->sizing_mode = sizing_mode;
3750         gtk_widget_queue_resize (GTK_WIDGET (view));
3751
3752         g_object_notify (G_OBJECT (view), "sizing-mode");
3753 }
3754
3755 EvSizingMode
3756 ev_view_get_sizing_mode (EvView *view)
3757 {
3758         g_return_val_if_fail (EV_IS_VIEW (view), EV_SIZING_FREE);
3759
3760         return view->sizing_mode;
3761 }
3762
3763 gboolean
3764 ev_view_can_zoom_in (EvView *view)
3765 {
3766         return view->scale * ZOOM_IN_FACTOR <= view->max_scale;
3767 }
3768
3769 gboolean
3770 ev_view_can_zoom_out (EvView *view)
3771 {
3772         return view->scale * ZOOM_OUT_FACTOR >= view->min_scale;
3773 }
3774
3775 void
3776 ev_view_zoom_in (EvView *view)
3777 {
3778         g_return_if_fail (view->sizing_mode == EV_SIZING_FREE);
3779
3780         view->pending_scroll = SCROLL_TO_CENTER;
3781         ev_view_set_zoom (view, ZOOM_IN_FACTOR, TRUE);
3782 }
3783
3784 void
3785 ev_view_zoom_out (EvView *view)
3786 {
3787         g_return_if_fail (view->sizing_mode == EV_SIZING_FREE);
3788
3789         view->pending_scroll = SCROLL_TO_CENTER;
3790         ev_view_set_zoom (view, ZOOM_OUT_FACTOR, TRUE);
3791 }
3792
3793 void
3794 ev_view_rotate_right (EvView *view)
3795 {
3796         int rotation = view->rotation + 90;
3797
3798         if (rotation >= 360) {
3799                 rotation -= 360;
3800         }
3801
3802         ev_view_set_rotation (view, rotation);
3803 }
3804
3805 void
3806 ev_view_rotate_left (EvView *view)
3807 {
3808         int rotation = view->rotation - 90;
3809
3810         if (rotation < 0) {
3811                 rotation += 360;
3812         }
3813
3814         ev_view_set_rotation (view, rotation);
3815 }
3816
3817 void
3818 ev_view_set_rotation (EvView *view, int rotation)
3819 {
3820         view->rotation = rotation;
3821
3822         if (view->pixbuf_cache) {
3823                 ev_pixbuf_cache_clear (view->pixbuf_cache);
3824                 gtk_widget_queue_resize (GTK_WIDGET (view));
3825         }
3826
3827         if (rotation != 0)
3828                 clear_selection (view);
3829
3830         g_object_notify (G_OBJECT (view), "rotation");
3831 }
3832
3833 int
3834 ev_view_get_rotation (EvView *view)
3835 {
3836         return view->rotation;
3837 }
3838
3839 static double
3840 zoom_for_size_fit_width (int doc_width,
3841                          int doc_height,
3842                          int target_width,
3843                          int target_height,
3844                          int vsb_width)
3845 {
3846         double scale;
3847
3848         scale = (double)target_width / doc_width;
3849
3850         if (doc_height * scale > target_height)
3851                 scale = (double) (target_width - vsb_width) / doc_width;
3852
3853         return scale;
3854 }
3855
3856 static double
3857 zoom_for_size_fit_height (int doc_width,
3858                           int doc_height,
3859                           int target_width,
3860                           int target_height,
3861                           int vsb_height)
3862 {
3863         double scale;
3864
3865         scale = (double)target_height / doc_height;
3866
3867         if (doc_width * scale > target_width)
3868                 scale = (double) (target_height - vsb_height) / doc_height;
3869
3870         return scale;
3871 }
3872
3873 static double
3874 zoom_for_size_best_fit (int doc_width,
3875                         int doc_height,
3876                         int target_width,
3877                         int target_height,
3878                         int vsb_width,
3879                         int hsb_width)
3880 {
3881         double w_scale;
3882         double h_scale;
3883
3884         w_scale = (double)target_width / doc_width;
3885         h_scale = (double)target_height / doc_height;
3886
3887         if (doc_height * w_scale > target_height)
3888                 w_scale = (double) (target_width - vsb_width) / doc_width;
3889         if (doc_width * h_scale > target_width)
3890                 h_scale = (double) (target_height - hsb_width) / doc_height;
3891
3892         return MIN (w_scale, h_scale);
3893 }
3894
3895
3896 static void
3897 ev_view_zoom_for_size_presentation (EvView *view,
3898                                     int     width,
3899                                     int     height)
3900 {
3901         int doc_width, doc_height;
3902         gdouble scale;
3903
3904         ev_page_cache_get_size (view->page_cache,
3905                                 view->current_page,
3906                                 view->rotation,
3907                                 1.0,
3908                                 &doc_width,
3909                                 &doc_height);
3910         scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, 0, 0);
3911         ev_view_set_zoom (view, scale, FALSE);
3912 }
3913
3914 static void
3915 ev_view_zoom_for_size_continuous_and_dual_page (EvView *view,
3916                            int     width,
3917                            int     height,
3918                            int     vsb_width,
3919                            int     hsb_height)
3920 {
3921         int doc_width, doc_height;
3922         GtkBorder border;
3923         gdouble scale;
3924
3925         ev_page_cache_get_max_width (view->page_cache,
3926                                      view->rotation,
3927                                      1.0,
3928                                      &doc_width);
3929         ev_page_cache_get_max_height (view->page_cache,
3930                                       view->rotation,
3931                                       1.0,
3932                                       &doc_height);
3933         compute_border (view, doc_width, doc_height, &border);
3934
3935         doc_width = doc_width * 2;
3936         width -= (2 * (border.left + border.right) + 3 * view->spacing);
3937         height -= (border.top + border.bottom + 2 * view->spacing - 1);
3938
3939         /* FIXME: We really need to calculate the overall height here, not the
3940          * page height.  We assume there's always a vertical scrollbar for
3941          * now.  We need to fix this. */
3942         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
3943                 scale = zoom_for_size_fit_width (doc_width, doc_height, width - vsb_width, height, 0);
3944         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
3945                 scale = zoom_for_size_best_fit (doc_width, doc_height, width - vsb_width, height, 0, hsb_height);
3946         else
3947                 g_assert_not_reached ();
3948
3949         ev_view_set_zoom (view, scale, FALSE);
3950 }
3951
3952 static void
3953 ev_view_zoom_for_size_continuous (EvView *view,
3954                                   int     width,
3955                                   int     height,
3956                                   int     vsb_width,
3957                                   int     hsb_height)
3958 {
3959         int doc_width, doc_height;
3960         GtkBorder border;
3961         gdouble scale;
3962
3963         ev_page_cache_get_max_width (view->page_cache,
3964                                      view->rotation,
3965                                      1.0,
3966                                      &doc_width);
3967         ev_page_cache_get_max_height (view->page_cache,
3968                                       view->rotation,
3969                                       1.0,
3970                                       &doc_height);
3971         compute_border (view, doc_width, doc_height, &border);
3972
3973         width -= (border.left + border.right + 2 * view->spacing);
3974         height -= (border.top + border.bottom + 2 * view->spacing - 1);
3975
3976         /* FIXME: We really need to calculate the overall height here, not the
3977          * page height.  We assume there's always a vertical scrollbar for
3978          * now.  We need to fix this. */
3979         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
3980                 scale = zoom_for_size_fit_width (doc_width, doc_height, width - vsb_width, height, 0);
3981         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
3982                 scale = zoom_for_size_best_fit (doc_width, doc_height, width - vsb_width, height, 0, hsb_height);
3983         else
3984                 g_assert_not_reached ();
3985
3986         ev_view_set_zoom (view, scale, FALSE);
3987 }
3988
3989 static void
3990 ev_view_zoom_for_size_dual_page (EvView *view,
3991                                  int     width,
3992                                  int     height,
3993                                  int     vsb_width,
3994                                  int     hsb_height)
3995 {
3996         GtkBorder border;
3997         gint doc_width, doc_height;
3998         gdouble scale;
3999         gint other_page;
4000
4001         other_page = view->current_page ^ 1;
4002
4003         /* Find the largest of the two. */
4004         ev_page_cache_get_size (view->page_cache,
4005                                 view->current_page,
4006                                 view->rotation,
4007                                 1.0,
4008                                 &doc_width, &doc_height);
4009
4010         if (other_page < ev_page_cache_get_n_pages (view->page_cache)) {
4011                 gint width_2, height_2;
4012                 ev_page_cache_get_size (view->page_cache,
4013                                         other_page,
4014                                         view->rotation,
4015                                         1.0,
4016                                         &width_2, &height_2);
4017                 if (width_2 > doc_width)
4018                         doc_width = width_2;
4019                 if (height_2 > doc_height)
4020                         doc_height = height_2;
4021         }
4022         compute_border (view, doc_width, doc_height, &border);
4023
4024         doc_width = doc_width * 2;
4025         width -= ((border.left + border.right)* 2 + 3 * view->spacing);
4026         height -= (border.top + border.bottom + 2 * view->spacing);
4027
4028         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
4029                 scale = zoom_for_size_fit_width (doc_width, doc_height, width, height, vsb_width);
4030         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
4031                 scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, vsb_width, hsb_height);
4032         else
4033                 g_assert_not_reached ();
4034
4035         ev_view_set_zoom (view, scale, FALSE);
4036 }
4037
4038 static void
4039 ev_view_zoom_for_size_single_page (EvView *view,
4040                                    int     width,
4041                                    int     height,
4042                                    int     vsb_width,
4043                                    int     hsb_height)
4044 {
4045         int doc_width, doc_height;
4046         GtkBorder border;
4047         gdouble scale;
4048
4049         ev_page_cache_get_size (view->page_cache,
4050                                 view->current_page,
4051                                 view->rotation,
4052                                 1.0,
4053                                 &doc_width,
4054                                 &doc_height);
4055         /* Get an approximate border */
4056         compute_border (view, width, height, &border);
4057
4058         width -= (border.left + border.right + 2 * view->spacing);
4059         height -= (border.top + border.bottom + 2 * view->spacing);
4060
4061         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
4062                 scale = zoom_for_size_fit_width (doc_width, doc_height, width, height, vsb_width);
4063         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
4064                 scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, vsb_width, hsb_height);
4065         else
4066                 g_assert_not_reached ();
4067
4068         ev_view_set_zoom (view, scale, FALSE);
4069 }
4070
4071 void
4072 ev_view_set_zoom_for_size (EvView *view,
4073                            int     width,
4074                            int     height,
4075                            int     vsb_width,
4076                            int     hsb_height)
4077 {
4078         g_return_if_fail (view->sizing_mode == EV_SIZING_FIT_WIDTH ||
4079                           view->sizing_mode == EV_SIZING_BEST_FIT);
4080         g_return_if_fail (width >= 0);
4081         g_return_if_fail (height >= 0);
4082
4083         if (view->document == NULL)
4084                 return;
4085
4086         if (view->presentation)
4087                 ev_view_zoom_for_size_presentation (view, width, height);
4088         else if (view->continuous && view->dual_page)
4089                 ev_view_zoom_for_size_continuous_and_dual_page (view, width, height, vsb_width, hsb_height);
4090         else if (view->continuous)
4091                 ev_view_zoom_for_size_continuous (view, width, height, vsb_width, hsb_height);
4092         else if (view->dual_page)
4093                 ev_view_zoom_for_size_dual_page (view, width, height, vsb_width, hsb_height);
4094         else
4095                 ev_view_zoom_for_size_single_page (view, width, height, vsb_width, hsb_height);
4096 }
4097
4098 /*** Status text messages ***/
4099
4100 const char *
4101 ev_view_get_status (EvView *view)
4102 {
4103         g_return_val_if_fail (EV_IS_VIEW (view), NULL);
4104
4105         return view->status;
4106 }
4107
4108 static void
4109 ev_view_set_status (EvView *view, const char *message)
4110 {
4111         g_return_if_fail (EV_IS_VIEW (view));
4112
4113         if (message != view->status) {
4114                 g_free (view->status);
4115                 view->status = g_strdup (message);
4116                 g_object_notify (G_OBJECT (view), "status");
4117         }
4118 }
4119
4120 static void
4121 update_find_status_message (EvView *view, gboolean this_page)
4122 {
4123         char *message;
4124
4125         if (this_page) {
4126                 int results;
4127
4128                 results = ev_document_find_get_n_results
4129                                 (EV_DOCUMENT_FIND (view->document),
4130                                  view->current_page);
4131                 /* TRANS: Sometimes this could be better translated as
4132                    "%d hit(s) on this page".  Therefore this string
4133                    contains plural cases. */
4134                 message = g_strdup_printf (ngettext ("%d found on this page",
4135                                                      "%d found on this page",
4136                                                      results),
4137                                            results);
4138         } else {
4139                 double percent;
4140
4141                 percent = ev_document_find_get_progress
4142                                 (EV_DOCUMENT_FIND (view->document));
4143                 message = g_strdup_printf (_("%3d%% remaining to search"),
4144                                            (int) ((1.0 - percent) * 100));
4145
4146         }
4147         ev_view_set_find_status (view, message);
4148         g_free (message);
4149 }
4150
4151 const char *
4152 ev_view_get_find_status (EvView *view)
4153 {
4154         g_return_val_if_fail (EV_IS_VIEW (view), NULL);
4155
4156         return view->find_status;
4157 }
4158
4159 static void
4160 ev_view_set_find_status (EvView *view, const char *message)
4161 {
4162         g_return_if_fail (EV_IS_VIEW (view));
4163
4164         g_free (view->find_status);
4165         view->find_status = g_strdup (message);
4166         g_object_notify (G_OBJECT (view), "find-status");
4167 }
4168
4169 /*** Find ***/
4170
4171 static void
4172 jump_to_find_result (EvView *view)
4173 {
4174         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
4175         EvRectangle rect;
4176         GdkRectangle view_rect;
4177         int n_results;
4178         int page = view->current_page;
4179
4180         n_results = ev_document_find_get_n_results (find, page);
4181
4182         if (n_results > 0  && view->find_result < n_results) {
4183                 ev_document_find_get_result
4184                         (find, page, view->find_result, &rect);
4185
4186                 doc_rect_to_view_rect (view, page, &rect, &view_rect);
4187                 ensure_rectangle_is_visible (view, &view_rect);
4188         }
4189 }
4190
4191 /**
4192  * jump_to_find_page
4193  * @view: #EvView instance
4194  * @direction: Direction to look
4195  * @shift: Shift from current page
4196  *
4197  * Jumps to the first page that has occurences of searched word.
4198  * Uses a direction where to look and a shift from current page.
4199  *
4200  */
4201 static void
4202 jump_to_find_page (EvView *view, EvViewFindDirection direction, gint shift)
4203 {
4204         int n_pages, i;
4205
4206         n_pages = ev_page_cache_get_n_pages (view->page_cache);
4207
4208         for (i = 0; i < n_pages; i++) {
4209                 int has_results;
4210                 int page;
4211
4212                 if (direction == EV_VIEW_FIND_NEXT)
4213                         page = view->current_page + i;
4214                 else
4215                         page = view->current_page - i;
4216                 page += shift;
4217
4218                 if (page >= n_pages) {
4219                         page = page - n_pages;
4220                 }
4221                 if (page < 0)
4222                         page = page + n_pages;
4223
4224                 has_results = ev_document_find_page_has_results
4225                                 (EV_DOCUMENT_FIND (view->document), page);
4226                 if (has_results == -1) {
4227                         break;
4228                 } else if (has_results == 1) {
4229                         ev_page_cache_set_current_page (view->page_cache, page);
4230                         break;
4231                 }
4232         }
4233 }
4234
4235 gboolean
4236 ev_view_can_find_next (EvView *view)
4237 {
4238         if (EV_IS_DOCUMENT_FIND (view->document)) {
4239                 EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
4240                 int i, n_pages;
4241
4242                 n_pages = ev_page_cache_get_n_pages (view->page_cache);
4243                 for (i = 0; i < n_pages; i++) {
4244                         if (ev_document_find_get_n_results (find, i) > 0) {
4245                                 return TRUE;
4246                         }
4247                 }
4248         }
4249
4250         return FALSE;
4251 }
4252
4253 void
4254 ev_view_find_next (EvView *view)
4255 {
4256         int n_results, n_pages;
4257         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
4258
4259         n_results = ev_document_find_get_n_results (find, view->current_page);
4260
4261         n_pages = ev_page_cache_get_n_pages (view->page_cache);
4262
4263         view->find_result++;
4264
4265         if (view->find_result >= n_results) {
4266
4267                 view->find_result = 0;
4268                 jump_to_find_page (view, EV_VIEW_FIND_NEXT, 1);
4269                 jump_to_find_result (view);
4270         } else {
4271                 jump_to_find_result (view);
4272                 gtk_widget_queue_draw (GTK_WIDGET (view));
4273         }
4274 }
4275
4276 gboolean
4277 ev_view_can_find_previous (EvView *view)
4278 {
4279         if (EV_IS_DOCUMENT_FIND (view->document)) {
4280                 EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
4281                 int i, n_pages;
4282
4283                 n_pages = ev_page_cache_get_n_pages (view->page_cache);
4284                 for (i = n_pages - 1; i >= 0; i--) {
4285                         if (ev_document_find_get_n_results (find, i) > 0) {
4286                                 return TRUE;
4287                         }
4288                 }
4289         }
4290
4291         return FALSE;
4292 }
4293 void
4294 ev_view_find_previous (EvView *view)
4295 {
4296         int n_results, n_pages;
4297         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
4298         EvPageCache *page_cache;
4299
4300         page_cache = ev_page_cache_get (view->document);
4301
4302         n_results = ev_document_find_get_n_results (find, view->current_page);
4303
4304         n_pages = ev_page_cache_get_n_pages (page_cache);
4305
4306         view->find_result--;
4307
4308         if (view->find_result < 0) {
4309
4310                 jump_to_find_page (view, EV_VIEW_FIND_PREV, -1);
4311                 view->find_result = ev_document_find_get_n_results (find, view->current_page) - 1;
4312                 jump_to_find_result (view);
4313         } else {
4314                 jump_to_find_result (view);
4315                 gtk_widget_queue_draw (GTK_WIDGET (view));
4316         }
4317 }
4318
4319 void ev_view_search_changed (EvView *view)
4320 {
4321         /* search string has changed, focus on new search result */
4322         view->jump_to_find_result = TRUE;
4323 }
4324
4325 /*** Selections ***/
4326
4327 /* compute_new_selection_rect/text calculates the area currently selected by
4328  * view_rect.  each handles a different mode;
4329  */
4330 static GList *
4331 compute_new_selection_rect (EvView       *view,
4332                             GdkPoint     *start,
4333                             GdkPoint     *stop)
4334 {
4335         GdkRectangle view_rect;
4336         int n_pages, i;
4337         GList *list = NULL;
4338
4339         g_assert (view->selection_mode == EV_VIEW_SELECTION_RECTANGLE);
4340
4341         view_rect.x = MIN (start->x, stop->x);
4342         view_rect.y = MIN (start->y, stop->y);
4343         view_rect.width = MAX (start->x, stop->x) - view_rect.x;
4344         view_rect.width = MAX (start->y, stop->y) - view_rect.y;
4345
4346         n_pages = ev_page_cache_get_n_pages (view->page_cache);
4347
4348         for (i = 0; i < n_pages; i++) {
4349                 GdkRectangle page_area;
4350                 GtkBorder border;
4351
4352                 if (get_page_extents (view, i, &page_area, &border)) {
4353                         GdkRectangle overlap;
4354
4355                         if (gdk_rectangle_intersect (&page_area, &view_rect, &overlap)) {
4356                                 EvViewSelection *selection;
4357
4358                                 selection = g_new0 (EvViewSelection, 1);
4359                                 selection->page = i;
4360                                 view_rect_to_doc_rect (view, &overlap, &page_area,
4361                                                        &(selection->rect));
4362
4363                                 list = g_list_append (list, selection);
4364                         }
4365                 }
4366         }
4367
4368         return list;
4369 }
4370
4371 static gboolean
4372 gdk_rectangle_point_in (GdkRectangle *rectangle,
4373                         GdkPoint     *point)
4374 {
4375         return rectangle->x <= point->x &&
4376                 rectangle->y <= point->y &&
4377                 point->x < rectangle->x + rectangle->width &&
4378                 point->y < rectangle->y + rectangle->height;
4379 }
4380
4381 static GList *
4382 compute_new_selection_text (EvView   *view,
4383                             GdkPoint *start,
4384                             GdkPoint *stop)
4385 {
4386         int n_pages, i, first, last;
4387         GList *list = NULL;
4388         EvViewSelection *selection;
4389         gint width, height;
4390         int start_page, end_page;
4391
4392         g_assert (view->selection_mode == EV_VIEW_SELECTION_TEXT);
4393
4394         n_pages = ev_page_cache_get_n_pages (view->page_cache);
4395
4396         /* First figure out the range of pages the selection
4397          * affects. */
4398         first = n_pages;
4399         last = 0;
4400         if (view->continuous) {
4401                 start_page = 0;
4402                 end_page = n_pages;
4403         } else if (view->dual_page) {
4404                 start_page = view->start_page;
4405                 end_page = view->end_page + 1;
4406         } else {
4407                 start_page = view->current_page;
4408                 end_page = view->current_page + 1;
4409         }
4410
4411         for (i = start_page; i < end_page; i++) {
4412                 GdkRectangle page_area;
4413                 GtkBorder border;
4414
4415                 get_page_extents (view, i, &page_area, &border);
4416                 if (gdk_rectangle_point_in (&page_area, start) ||
4417                     gdk_rectangle_point_in (&page_area, stop)) {
4418                         if (first == n_pages)
4419                                 first = i;
4420                         last = i;
4421                 }
4422
4423         }
4424
4425
4426
4427         /* Now create a list of EvViewSelection's for the affected
4428          * pages.  This could be an empty list, a list of just one
4429          * page or a number of pages.*/
4430         for (i = first; i < last + 1; i++) {
4431                 GdkRectangle page_area;
4432                 GtkBorder border;
4433                 GdkPoint *point;
4434
4435                 ev_page_cache_get_size (view->page_cache, i,
4436                                         view->rotation,
4437                                         1.0, &width, &height);
4438
4439                 selection = g_new0 (EvViewSelection, 1);
4440                 selection->page = i;
4441                 selection->rect.x1 = selection->rect.y1 = 0;
4442                 selection->rect.x2 = width;
4443                 selection->rect.y2 = height;
4444
4445                 get_page_extents (view, i, &page_area, &border);
4446
4447                 if (gdk_rectangle_point_in (&page_area, start))
4448                         point = start;
4449                 else
4450                         point = stop;
4451
4452                 if (i == first)
4453                         view_point_to_doc_point (view, point, &page_area,
4454                                                  &selection->rect.x1,
4455                                                  &selection->rect.y1);
4456
4457                 /* If the selection is contained within just one page,
4458                  * make sure we don't write 'start' into both points
4459                  * in selection->rect. */
4460                 if (first == last)
4461                         point = stop;
4462
4463                 if (i == last)
4464                         view_point_to_doc_point (view, point, &page_area,
4465                                                  &selection->rect.x2,
4466                                                  &selection->rect.y2);
4467
4468                 list = g_list_append (list, selection);
4469         }
4470
4471         return list;
4472 }
4473
4474 /* This function takes the newly calculated list, and figures out which regions
4475  * have changed.  It then queues a redraw approporiately.
4476  */
4477 static void
4478 merge_selection_region (EvView *view,
4479                         GList  *new_list)
4480 {
4481         GList *old_list;
4482         GList *new_list_ptr, *old_list_ptr;
4483
4484         /* Update the selection */
4485         old_list = ev_pixbuf_cache_get_selection_list (view->pixbuf_cache);
4486         g_list_foreach (view->selection_info.selections, (GFunc)selection_free, NULL);
4487         view->selection_info.selections = new_list;
4488         ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, new_list);
4489         g_object_notify (G_OBJECT (view), "has-selection");
4490
4491         new_list_ptr = new_list;
4492         old_list_ptr = old_list;
4493
4494         while (new_list_ptr || old_list_ptr) {
4495                 EvViewSelection *old_sel, *new_sel;
4496                 int cur_page;
4497                 GdkRegion *region = NULL;
4498
4499                 new_sel = (new_list_ptr) ? (new_list_ptr->data) : NULL;
4500                 old_sel = (old_list_ptr) ? (old_list_ptr->data) : NULL;
4501
4502                 /* Assume that the lists are in order, and we run through them
4503                  * comparing them, one page at a time.  We come out with the
4504                  * first page we see. */
4505                 if (new_sel && old_sel) {
4506                         if (new_sel->page < old_sel->page) {
4507                                 new_list_ptr = new_list_ptr->next;
4508                                 old_sel = NULL;
4509                         } else if (new_sel->page > old_sel->page) {
4510                                 old_list_ptr = old_list_ptr->next;
4511                                 new_sel = NULL;
4512                         } else {
4513                                 new_list_ptr = new_list_ptr->next;
4514                                 old_list_ptr = old_list_ptr->next;
4515                         }
4516                 } else if (new_sel) {
4517                         new_list_ptr = new_list_ptr->next;
4518                 } else if (old_sel) {
4519                         old_list_ptr = old_list_ptr->next;
4520                 }
4521
4522                 g_assert (new_sel || old_sel);
4523
4524                 /* is the page we're looking at on the screen?*/
4525                 cur_page = new_sel ? new_sel->page : old_sel->page;
4526                 if (cur_page < view->start_page || cur_page > view->end_page)
4527                         continue;
4528
4529                 /* seed the cache with a new page.  We are going to need the new
4530                  * region too. */
4531                 if (new_sel) {
4532                         GdkRegion *tmp_region = NULL;
4533                         ev_pixbuf_cache_get_selection_pixbuf (view->pixbuf_cache,
4534                                                               cur_page,
4535                                                               view->scale,
4536                                                               &tmp_region);
4537                         if (tmp_region) {
4538                                 new_sel->covered_region = gdk_region_copy (tmp_region);
4539                         }
4540                 }
4541
4542                 /* Now we figure out what needs redrawing */
4543                 if (old_sel && new_sel) {
4544                         if (old_sel->covered_region &&
4545                             new_sel->covered_region) {
4546                                 /* We only want to redraw the areas that have
4547                                  * changed, so we xor the old and new regions
4548                                  * and redraw if it's different */
4549                                 region = gdk_region_copy (old_sel->covered_region);
4550                                 gdk_region_xor (region, new_sel->covered_region);
4551                                 if (gdk_region_empty (region)) {
4552                                         gdk_region_destroy (region);
4553                                         region = NULL;
4554                                 }
4555                         } else if (old_sel->covered_region) {
4556                                 region = gdk_region_copy (old_sel->covered_region);
4557                         } else if (new_sel->covered_region) {
4558                                 region = gdk_region_copy (new_sel->covered_region);
4559                         }
4560                 } else if (old_sel && !new_sel) {
4561                         if (old_sel->covered_region && !gdk_region_empty (old_sel->covered_region)) {
4562                                 region = gdk_region_copy (old_sel->covered_region);
4563                         }
4564                 } else if (!old_sel && new_sel) {
4565                         if (new_sel->covered_region && !gdk_region_empty (new_sel->covered_region)) {
4566                                 region = gdk_region_copy (new_sel->covered_region);
4567                         }
4568                 } else {
4569                         g_assert_not_reached ();
4570                 }
4571
4572                 /* Redraw the damaged region! */
4573                 if (region) {
4574                         GdkRectangle page_area;
4575                         GtkBorder border;
4576
4577                         get_page_extents (view, cur_page, &page_area, &border);
4578                         gdk_region_offset (region,
4579                                            page_area.x + border.left - view->scroll_x,
4580                                            page_area.y + border.top - view->scroll_y);
4581                         gdk_window_invalidate_region (GTK_WIDGET (view)->window, region, TRUE);
4582                         gdk_region_destroy (region);
4583                 }
4584         }
4585
4586         /* Free the old list, now that we're done with it. */
4587         g_list_foreach (old_list, (GFunc) selection_free, NULL);
4588 }
4589
4590 static void
4591 compute_selections (EvView   *view,
4592                     GdkPoint *start,
4593                     GdkPoint *stop)
4594 {
4595         GList *list;
4596
4597         if (view->selection_mode == EV_VIEW_SELECTION_RECTANGLE)
4598                 list = compute_new_selection_rect (view, start, stop);
4599         else
4600                 list = compute_new_selection_text (view, start, stop);
4601         merge_selection_region (view, list);
4602 }
4603
4604 /* Free's the selection.  It's up to the caller to queue redraws if needed.
4605  */
4606 static void
4607 selection_free (EvViewSelection *selection)
4608 {
4609         if (selection->covered_region)
4610                 gdk_region_destroy (selection->covered_region);
4611         g_free (selection);
4612 }
4613
4614 static void
4615 clear_selection (EvView *view)
4616 {
4617         g_list_foreach (view->selection_info.selections, (GFunc)selection_free, NULL);
4618         view->selection_info.selections = NULL;
4619         view->selection_info.in_selection = FALSE;
4620         if (view->pixbuf_cache)
4621                 ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, NULL);
4622         g_object_notify (G_OBJECT (view), "has-selection");
4623 }
4624
4625
4626 void
4627 ev_view_select_all (EvView *view)
4628 {
4629         int n_pages, i;
4630
4631         /* Disable selection on rotated pages for the 0.4.0 series */
4632         if (view->rotation != 0)
4633                 return;
4634
4635         clear_selection (view);
4636
4637         n_pages = ev_page_cache_get_n_pages (view->page_cache);
4638         for (i = 0; i < n_pages; i++) {
4639                 int width, height;
4640                 EvViewSelection *selection;
4641
4642                 ev_page_cache_get_size (view->page_cache,
4643                                         i,
4644                                         view->rotation,
4645                                         1.0, &width, &height);
4646
4647                 selection = g_new0 (EvViewSelection, 1);
4648                 selection->page = i;
4649                 selection->rect.x1 = selection->rect.y1 = 0;
4650                 selection->rect.x2 = width;
4651                 selection->rect.y2 = height;
4652
4653                 view->selection_info.selections = g_list_append (view->selection_info.selections, selection);
4654         }
4655
4656         ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, view->selection_info.selections);
4657         g_object_notify (G_OBJECT (view), "has-selection");
4658         gtk_widget_queue_draw (GTK_WIDGET (view));
4659 }
4660
4661 gboolean
4662 ev_view_get_has_selection (EvView *view)
4663 {
4664         return view->selection_info.selections != NULL;
4665 }
4666
4667 static char *
4668 get_selected_text (EvView *ev_view)
4669 {
4670         GString *text;
4671         GList *l;
4672         gchar *normalized_text;
4673
4674         text = g_string_new (NULL);
4675
4676         ev_document_doc_mutex_lock ();
4677
4678         for (l = ev_view->selection_info.selections; l != NULL; l = l->next) {
4679                 EvViewSelection *selection = (EvViewSelection *)l->data;
4680                 char *tmp;
4681
4682                 tmp = ev_document_get_text (ev_view->document,
4683                                             selection->page,
4684                                             &selection->rect);
4685                 g_string_append (text, tmp);
4686                 g_free (tmp);
4687         }
4688
4689         ev_document_doc_mutex_unlock ();
4690
4691         normalized_text = g_utf8_normalize (text->str, text->len, G_NORMALIZE_NFKC);
4692         g_string_free (text, TRUE);
4693         return normalized_text;
4694 }
4695
4696 void
4697 ev_view_copy (EvView *ev_view)
4698 {
4699         GtkClipboard *clipboard;
4700         char *text;
4701
4702         if (!ev_document_can_get_text (ev_view->document)) {
4703                 return;
4704         }
4705
4706         text = get_selected_text (ev_view);
4707         clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view),
4708                                               GDK_SELECTION_CLIPBOARD);
4709         gtk_clipboard_set_text (clipboard, text, -1);
4710         g_free (text);
4711 }
4712
4713 static void
4714 ev_view_primary_get_cb (GtkClipboard     *clipboard,
4715                         GtkSelectionData *selection_data,
4716                         guint             info,
4717                         gpointer          data)
4718 {
4719         EvView *ev_view = EV_VIEW (data);
4720         char *text;
4721
4722         if (!ev_document_can_get_text (ev_view->document)) {
4723                 return;
4724         }
4725
4726         text = get_selected_text (ev_view);
4727         gtk_selection_data_set_text (selection_data, text, -1);
4728         g_free (text);
4729 }
4730
4731 static void
4732 ev_view_primary_clear_cb (GtkClipboard *clipboard,
4733                           gpointer      data)
4734 {
4735         EvView *view = EV_VIEW (data);
4736
4737         clear_selection (view);
4738 }
4739
4740 static void
4741 ev_view_update_primary_selection (EvView *ev_view)
4742 {
4743         GtkClipboard *clipboard;
4744
4745         clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view),
4746                                               GDK_SELECTION_PRIMARY);
4747
4748         if (ev_view->selection_info.selections) {
4749                 if (!gtk_clipboard_set_with_owner (clipboard,
4750                                                    clipboard_targets,
4751                                                    G_N_ELEMENTS (clipboard_targets),
4752                                                    ev_view_primary_get_cb,
4753                                                    ev_view_primary_clear_cb,
4754                                                    G_OBJECT (ev_view)))
4755                         ev_view_primary_clear_cb (clipboard, ev_view);
4756         } else {
4757                 if (gtk_clipboard_get_owner (clipboard) == G_OBJECT (ev_view))
4758                         gtk_clipboard_clear (clipboard);
4759         }
4760 }
4761
4762 /*** Cursor operations ***/
4763
4764 static GdkCursor *
4765 ev_view_create_invisible_cursor(void)
4766 {
4767        GdkBitmap *empty;
4768        GdkColor black = { 0, 0, 0, 0 };
4769        static char bits[] = { 0x00 };
4770
4771        empty = gdk_bitmap_create_from_data (NULL, bits, 1, 1);
4772
4773        return gdk_cursor_new_from_pixmap (empty, empty, &black, &black, 0, 0);
4774 }
4775
4776 static void
4777 ev_view_set_cursor (EvView *view, EvViewCursor new_cursor)
4778 {
4779         GdkCursor *cursor = NULL;
4780         GdkDisplay *display;
4781         GtkWidget *widget;
4782
4783         if (view->cursor == new_cursor) {
4784                 return;
4785         }
4786
4787         widget = gtk_widget_get_toplevel (GTK_WIDGET (view));
4788         display = gtk_widget_get_display (widget);
4789         view->cursor = new_cursor;
4790
4791         switch (new_cursor) {
4792                 case EV_VIEW_CURSOR_NORMAL:
4793                         gdk_window_set_cursor (widget->window, NULL);
4794                         break;
4795                 case EV_VIEW_CURSOR_IBEAM:
4796                         cursor = gdk_cursor_new_for_display (display, GDK_XTERM);
4797                         break;
4798                 case EV_VIEW_CURSOR_LINK:
4799                         cursor = gdk_cursor_new_for_display (display, GDK_HAND2);
4800                         break;
4801                 case EV_VIEW_CURSOR_WAIT:
4802                         cursor = gdk_cursor_new_for_display (display, GDK_WATCH);
4803                         break;
4804                 case EV_VIEW_CURSOR_HIDDEN:
4805                         cursor = ev_view_create_invisible_cursor ();
4806                         break;
4807                 case EV_VIEW_CURSOR_DRAG:
4808                         cursor = gdk_cursor_new_for_display (display, GDK_FLEUR);
4809                         break;
4810         }
4811
4812         if (cursor) {
4813                 gdk_window_set_cursor (widget->window, cursor);
4814                 gdk_cursor_unref (cursor);
4815                 gdk_flush();
4816         }
4817 }
4818
4819 void
4820 ev_view_hide_cursor (EvView *view)
4821 {
4822        ev_view_set_cursor (view, EV_VIEW_CURSOR_HIDDEN);
4823 }
4824
4825 void
4826 ev_view_show_cursor (EvView *view)
4827 {
4828        ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
4829 }
4830
4831 static void
4832 ev_view_reset_presentation_state (EvView *view)
4833 {
4834         if (!view->presentation ||
4835             view->presentation_state == EV_PRESENTATION_NORMAL)
4836                 return;
4837
4838         view->presentation_state = EV_PRESENTATION_NORMAL;
4839         gdk_window_set_background (GTK_WIDGET (view)->window,
4840                                    &GTK_WIDGET (view)->style->black);
4841         gtk_widget_queue_draw (GTK_WIDGET (view));
4842 }
4843
4844 gboolean
4845 ev_view_next_page (EvView *view)
4846 {
4847         int page, n_pages;
4848
4849         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
4850
4851         if (!view->page_cache)
4852                 return FALSE;
4853
4854         ev_view_presentation_transition_stop (view);
4855         ev_view_reset_presentation_state (view);
4856
4857         page = ev_page_cache_get_current_page (view->page_cache);
4858         n_pages = ev_page_cache_get_n_pages (view->page_cache);
4859
4860         if (view->dual_page && !view->presentation)
4861                 page = page + 2;
4862         else
4863                 page = page + 1;
4864
4865         if (page < n_pages) {
4866                 ev_page_cache_set_current_page (view->page_cache, page);
4867                 return TRUE;
4868         } else if (view->presentation && page == n_pages) {
4869                 view->presentation_state = EV_PRESENTATION_END;
4870                 gtk_widget_queue_draw (GTK_WIDGET (view));
4871                 return TRUE;
4872         } else if (view->dual_page && page == n_pages) {
4873                 ev_page_cache_set_current_page (view->page_cache, page - 1);
4874                 return TRUE;
4875         } else {
4876                 return FALSE;
4877         }
4878 }
4879
4880 gboolean
4881 ev_view_previous_page (EvView *view)
4882 {
4883         int page;
4884
4885         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
4886
4887         if (!view->page_cache)
4888                 return FALSE;
4889
4890         if (view->presentation &&
4891             view->presentation_state == EV_PRESENTATION_END) {
4892                 ev_view_reset_presentation_state (view);
4893                 return TRUE;
4894         }
4895
4896         ev_view_reset_presentation_state (view);
4897
4898         page = ev_page_cache_get_current_page (view->page_cache);
4899
4900         if (view->dual_page && !view->presentation)
4901                 page = page - 2;
4902         else
4903                 page = page - 1;
4904
4905         if (page >= 0) {
4906                 ev_page_cache_set_current_page (view->page_cache, page);
4907                 return TRUE;
4908         } else if (ev_view_get_dual_page (view) && page == -1) {
4909                 ev_page_cache_set_current_page (view->page_cache, 0);
4910                 return TRUE;
4911         } else {
4912                 return FALSE;
4913         }
4914 }
4915
4916 /*** Enum description for usage in signal ***/
4917
4918 GType
4919 ev_sizing_mode_get_type (void)
4920 {
4921   static GType etype = 0;
4922   if (etype == 0) {
4923     static const GEnumValue values[] = {
4924       { EV_SIZING_FIT_WIDTH, "EV_SIZING_FIT_WIDTH", "fit-width" },
4925       { EV_SIZING_BEST_FIT, "EV_SIZING_BEST_FIT", "best-fit" },
4926       { EV_SIZING_FREE, "EV_SIZING_FREE", "free" },
4927       { 0, NULL, NULL }
4928     };
4929     etype = g_enum_register_static ("EvSizingMode", values);
4930   }
4931   return etype;
4932 }
4933
4934 GType
4935 ev_scroll_type_get_type (void)
4936 {
4937   static GType etype = 0;
4938   if (etype == 0) {
4939     static const GEnumValue values[] = {
4940       { EV_SCROLL_PAGE_FORWARD, "EV_SCROLL_PAGE_FORWARD", "scroll-page-forward" },
4941       { EV_SCROLL_PAGE_BACKWARD, "EV_SCROLL_PAGE_BACKWARD", "scroll-page-backward" },
4942       { EV_SCROLL_STEP_FORWARD, "EV_SCROLL_STEP_FORWARD", "scroll-step-forward" },
4943       { EV_SCROLL_STEP_FORWARD, "EV_SCROLL_STEP_FORWARD", "scroll-step-forward" },
4944       { EV_SCROLL_STEP_UP, "EV_SCROLL_STEP_UP", "scroll-step-up" },
4945       { EV_SCROLL_STEP_DOWN, "EV_SCROLL_STEP_DOWN", "scroll-step-down" },
4946       { 0, NULL, NULL }
4947     };
4948     etype = g_enum_register_static ("EvScrollType", values);
4949   }
4950   return etype;
4951 }