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
1352         type = ev_link_action_get_action_type (action);
1353
1354         switch (type) {
1355                 case EV_LINK_ACTION_TYPE_GOTO_DEST: {
1356                         EvLinkDest *dest;
1357
1358                         g_signal_emit (view, signals[SIGNAL_HANDLE_LINK], 0, link);
1359
1360                         dest = ev_link_action_get_dest (action);
1361                         ev_view_goto_dest (view, dest);
1362                 }
1363                         break;
1364                 case EV_LINK_ACTION_TYPE_GOTO_REMOTE:
1365                 case EV_LINK_ACTION_TYPE_EXTERNAL_URI:
1366                 case EV_LINK_ACTION_TYPE_LAUNCH:
1367                 case EV_LINK_ACTION_TYPE_NAMED:
1368                         g_signal_emit (view, signals[SIGNAL_EXTERNAL_LINK], 0, action);
1369                         break;
1370         }
1371 }
1372
1373 gchar *
1374 ev_view_page_label_from_dest (EvView *view, EvLinkDest *dest)
1375 {
1376         EvLinkDestType type;
1377         gchar *msg = NULL;
1378
1379         type = ev_link_dest_get_dest_type (dest);
1380
1381         switch (type) {
1382                 case EV_LINK_DEST_TYPE_NAMED: {
1383                         EvLinkDest  *dest2;
1384                         const gchar *named_dest;
1385
1386                         named_dest = ev_link_dest_get_named_dest (dest);
1387                         dest2 = ev_document_links_find_link_dest (EV_DOCUMENT_LINKS (view->document),
1388                                                                   named_dest);
1389                         if (dest2) {
1390                                 msg = ev_page_cache_get_page_label (view->page_cache,
1391                                                                     ev_link_dest_get_page (dest2));
1392                                 g_object_unref (dest2);
1393                         }
1394                 }
1395
1396                         break;
1397                 case EV_LINK_DEST_TYPE_PAGE_LABEL: {
1398                         msg = g_strdup (ev_link_dest_get_page_label (dest));
1399                 }
1400                         break;
1401                 default:
1402                         msg = ev_page_cache_get_page_label (view->page_cache,
1403                                                             ev_link_dest_get_page (dest));
1404         }
1405
1406         return msg;
1407 }
1408
1409 static char *
1410 tip_from_action_named (EvLinkAction *action)
1411 {
1412         const gchar *name = ev_link_action_get_name (action);
1413
1414         if (g_ascii_strcasecmp (name, "FirstPage") == 0) {
1415                 return g_strdup (_("Go to first page"));
1416         } else if (g_ascii_strcasecmp (name, "PrevPage") == 0) {
1417                 return g_strdup (_("Go to previous page"));
1418         } else if (g_ascii_strcasecmp (name, "NextPage") == 0) {
1419                 return g_strdup (_("Go to next page"));
1420         } else if (g_ascii_strcasecmp (name, "LastPage") == 0) {
1421                 return g_strdup (_("Go to last page"));
1422         } else if (g_ascii_strcasecmp (name, "GoToPage") == 0) {
1423                 return g_strdup (_("Go to page"));
1424         } else if (g_ascii_strcasecmp (name, "Find") == 0) {
1425                 return g_strdup (_("Find"));
1426         }
1427
1428         return NULL;
1429 }
1430
1431 static char *
1432 tip_from_link (EvView *view, EvLink *link)
1433 {
1434         EvLinkAction *action;
1435         EvLinkActionType type;
1436         char *msg = NULL;
1437         char *page_label;
1438         const char *title;
1439
1440         action = ev_link_get_action (link);
1441         title = ev_link_get_title (link);
1442
1443         if (!action)
1444                 return title ? g_strdup (title) : NULL;
1445
1446         type = ev_link_action_get_action_type (action);
1447
1448         switch (type) {
1449                 case EV_LINK_ACTION_TYPE_GOTO_DEST:
1450                         page_label = ev_view_page_label_from_dest (view,
1451                                                                    ev_link_action_get_dest (action));
1452                         msg = g_strdup_printf (_("Go to page %s"), page_label);
1453                         g_free (page_label);
1454                         break;
1455                 case EV_LINK_ACTION_TYPE_GOTO_REMOTE:
1456                         if (title) {
1457                                 msg = g_strdup_printf (_("Go to %s on file “%s”"), title,
1458                                                        ev_link_action_get_filename (action));
1459                         } else {
1460                                 msg = g_strdup_printf (_("Go to file “%s”"),
1461                                                        ev_link_action_get_filename (action));
1462                         }
1463
1464                         break;
1465                 case EV_LINK_ACTION_TYPE_EXTERNAL_URI:
1466                         msg = g_strdup (ev_link_action_get_uri (action));
1467                         break;
1468                 case EV_LINK_ACTION_TYPE_LAUNCH:
1469                         msg = g_strdup_printf (_("Launch %s"),
1470                                                ev_link_action_get_filename (action));
1471                         break;
1472                 case EV_LINK_ACTION_TYPE_NAMED:
1473                         msg = tip_from_action_named (action);
1474                         break;
1475                 default:
1476                         if (title)
1477                                 msg = g_strdup (title);
1478                         break;
1479         }
1480
1481         return msg;
1482 }
1483
1484 static void
1485 handle_link_over_xy (EvView *view, gint x, gint y)
1486 {
1487         EvLink *link;
1488
1489         link = ev_view_get_link_at_location (view, x, y);
1490
1491         if (view->link_tooltip == NULL) {
1492                 view->link_tooltip = ev_tooltip_new (GTK_WIDGET (view));
1493         }
1494
1495         if (view->hovered_link != link) {
1496                 view->hovered_link = link;
1497                 ev_tooltip_deactivate (EV_TOOLTIP (view->link_tooltip));
1498         }
1499
1500         if (link) {
1501                 char *msg = tip_from_link (view, link);
1502
1503                 if (msg && g_utf8_validate (msg, -1, NULL)) {
1504                         EvTooltip *tooltip = EV_TOOLTIP (view->link_tooltip);
1505
1506                         ev_tooltip_set_position (tooltip, x, y);
1507                         ev_tooltip_set_text (tooltip, msg);
1508                         ev_tooltip_activate (tooltip);
1509                 }
1510                 g_free (msg);
1511
1512                 ev_view_set_cursor (view, EV_VIEW_CURSOR_LINK);
1513         } else if (location_in_text (view, x + view->scroll_x, y + view->scroll_y)) {
1514                 ev_view_set_cursor (view, EV_VIEW_CURSOR_IBEAM);
1515         } else {
1516                 ev_view_set_status (view, NULL);
1517                 if (view->cursor == EV_VIEW_CURSOR_LINK ||
1518                     view->cursor == EV_VIEW_CURSOR_IBEAM)
1519                         ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
1520         }
1521         return;
1522 }
1523
1524 /*** Images ***/
1525 static EvImage *
1526 ev_view_get_image_at_location (EvView  *view,
1527                                gdouble  x,
1528                                gdouble  y)
1529 {
1530         gint page = -1;
1531         gint x_offset = 0, y_offset = 0;
1532         gint x_new = 0, y_new = 0;
1533         GList *image_mapping;
1534
1535         if (!EV_IS_DOCUMENT_IMAGES (view->document))
1536                 return NULL;
1537
1538         x += view->scroll_x;
1539         y += view->scroll_y;
1540
1541         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1542
1543         if (page == -1)
1544                 return NULL;
1545
1546         if (get_doc_point_from_offset (view, page, x_offset,
1547                                        y_offset, &x_new, &y_new) == FALSE)
1548                 return NULL;
1549
1550         image_mapping = ev_pixbuf_cache_get_image_mapping (view->pixbuf_cache, page);
1551
1552         if (image_mapping)
1553                 return ev_image_mapping_find (image_mapping, x_new, y_new);
1554         else
1555                 return NULL;
1556 }
1557
1558 /*** GtkWidget implementation ***/
1559
1560 static void
1561 ev_view_size_request_continuous_dual_page (EvView         *view,
1562                                            GtkRequisition *requisition)
1563 {
1564         int max_width;
1565         gint n_pages;
1566         GtkBorder border;
1567
1568         ev_page_cache_get_max_width (view->page_cache, view->rotation,
1569                                      view->scale, &max_width);
1570         compute_border (view, max_width, max_width, &border);
1571
1572         n_pages = ev_page_cache_get_n_pages (view->page_cache) + 1;
1573
1574         requisition->width = (max_width + border.left + border.right) * 2 + (view->spacing * 3);
1575         get_page_y_offset (view, n_pages, view->scale, &requisition->height);
1576
1577         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
1578                 requisition->width = 1;
1579         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
1580                 requisition->width = 1;
1581                 /* FIXME: This could actually be set on one page docs or docs
1582                  * with a strange aspect ratio. */
1583                 /* requisition->height = 1;*/
1584         }
1585 }
1586
1587 static void
1588 ev_view_size_request_continuous (EvView         *view,
1589                                  GtkRequisition *requisition)
1590 {
1591         int max_width;
1592         int n_pages;
1593         GtkBorder border;
1594
1595
1596         ev_page_cache_get_max_width (view->page_cache, view->rotation,
1597                                      view->scale, &max_width);
1598         n_pages = ev_page_cache_get_n_pages (view->page_cache);
1599         compute_border (view, max_width, max_width, &border);
1600
1601         requisition->width = max_width + (view->spacing * 2) + border.left + border.right;
1602         get_page_y_offset (view, n_pages, view->scale, &requisition->height);
1603
1604         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
1605                 requisition->width = 1;
1606         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
1607                 requisition->width = 1;
1608                 /* FIXME: This could actually be set on one page docs or docs
1609                  * with a strange aspect ratio. */
1610                 /* requisition->height = 1;*/
1611         }
1612 }
1613
1614 static void
1615 ev_view_size_request_dual_page (EvView         *view,
1616                                 GtkRequisition *requisition)
1617 {
1618         GtkBorder border;
1619         gint width, height;
1620
1621         /* Find the largest of the two. */
1622         ev_page_cache_get_size (view->page_cache,
1623                                 view->current_page,
1624                                 view->rotation,
1625                                 view->scale,
1626                                 &width, &height);
1627         if (view->current_page + 1 < ev_page_cache_get_n_pages (view->page_cache)) {
1628                 gint width_2, height_2;
1629                 ev_page_cache_get_size (view->page_cache,
1630                                         view->current_page + 1,
1631                                         view->rotation,
1632                                         view->scale,
1633                                         &width_2, &height_2);
1634                 if (width_2 > width) {
1635                         width = width_2;
1636                         height = height_2;
1637                 }
1638         }
1639         compute_border (view, width, height, &border);
1640
1641         requisition->width = ((width + border.left + border.right) * 2) +
1642                 (view->spacing * 3);
1643         requisition->height = (height + border.top + border.bottom) +
1644                 (view->spacing * 2);
1645
1646         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
1647                 requisition->width = 1;
1648         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
1649                 requisition->width = 1;
1650                 requisition->height = 1;
1651         }
1652 }
1653
1654 static void
1655 ev_view_size_request_single_page (EvView         *view,
1656                                   GtkRequisition *requisition)
1657 {
1658         GtkBorder border;
1659         gint width, height;
1660
1661         ev_page_cache_get_size (view->page_cache,
1662                                 view->current_page,
1663                                 view->rotation,
1664                                 view->scale,
1665                                 &width, &height);
1666         compute_border (view, width, height, &border);
1667
1668         requisition->width = width + border.left + border.right + (2 * view->spacing);
1669         requisition->height = height + border.top + border.bottom + (2 * view->spacing);
1670
1671         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
1672                 requisition->width = 1;
1673                 requisition->height = height + border.top + border.bottom + (2 * view->spacing);
1674         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
1675                 requisition->width = 1;
1676                 requisition->height = 1;
1677         }
1678 }
1679
1680 static void
1681 ev_view_size_request (GtkWidget      *widget,
1682                       GtkRequisition *requisition)
1683 {
1684         EvView *view = EV_VIEW (widget);
1685
1686         if (view->document == NULL) {
1687                 requisition->width = 1;
1688                 requisition->height = 1;
1689                 return;
1690         }
1691
1692         if (view->presentation) {
1693                 requisition->width = 1;
1694                 requisition->height = 1;
1695                 return;
1696         }
1697
1698         if (view->continuous && view->dual_page)
1699                 ev_view_size_request_continuous_dual_page (view, requisition);
1700         else if (view->continuous)
1701                 ev_view_size_request_continuous (view, requisition);
1702         else if (view->dual_page)
1703                 ev_view_size_request_dual_page (view, requisition);
1704         else
1705                 ev_view_size_request_single_page (view, requisition);
1706 }
1707
1708 static void
1709 ev_view_size_allocate (GtkWidget      *widget,
1710                        GtkAllocation  *allocation)
1711 {
1712         EvView *view = EV_VIEW (widget);
1713
1714         GTK_WIDGET_CLASS (ev_view_parent_class)->size_allocate (widget, allocation);
1715
1716         if (view->sizing_mode == EV_SIZING_FIT_WIDTH ||
1717             view->sizing_mode == EV_SIZING_BEST_FIT) {
1718
1719                 g_signal_emit (view, signals[SIGNAL_ZOOM_INVALID], 0);
1720
1721                 ev_view_size_request (widget, &widget->requisition);
1722         }
1723
1724         view_set_adjustment_values (view, GTK_ORIENTATION_HORIZONTAL);
1725         view_set_adjustment_values (view, GTK_ORIENTATION_VERTICAL);
1726
1727         if (view->document)
1728                 view_update_range_and_current_page (view);
1729
1730         view->pending_scroll = SCROLL_TO_KEEP_POSITION;
1731         view->pending_resize = FALSE;
1732 }
1733
1734 static void
1735 ev_view_realize (GtkWidget *widget)
1736 {
1737         EvView *view = EV_VIEW (widget);
1738         GdkWindowAttr attributes;
1739
1740         GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
1741
1742         attributes.window_type = GDK_WINDOW_CHILD;
1743         attributes.wclass = GDK_INPUT_OUTPUT;
1744         attributes.visual = gtk_widget_get_visual (widget);
1745         attributes.colormap = gtk_widget_get_colormap (widget);
1746
1747         attributes.x = widget->allocation.x;
1748         attributes.y = widget->allocation.y;
1749         attributes.width = widget->allocation.width;
1750         attributes.height = widget->allocation.height;
1751         attributes.event_mask = GDK_EXPOSURE_MASK |
1752                                 GDK_BUTTON_PRESS_MASK |
1753                                 GDK_BUTTON_RELEASE_MASK |
1754                                 GDK_SCROLL_MASK |
1755                                 GDK_KEY_PRESS_MASK |
1756                                 GDK_POINTER_MOTION_MASK |
1757                                 GDK_POINTER_MOTION_HINT_MASK |
1758                                 GDK_ENTER_NOTIFY_MASK |
1759                                 GDK_LEAVE_NOTIFY_MASK;
1760
1761         widget->window = gdk_window_new (gtk_widget_get_parent_window (widget),
1762                                          &attributes,
1763                                          GDK_WA_X | GDK_WA_Y |
1764                                          GDK_WA_COLORMAP |
1765                                          GDK_WA_VISUAL);
1766         gdk_window_set_user_data (widget->window, widget);
1767         widget->style = gtk_style_attach (widget->style, widget->window);
1768
1769         if (view->presentation)
1770                 gdk_window_set_background (widget->window, &widget->style->black);
1771         else
1772                 gdk_window_set_background (widget->window, &widget->style->mid [GTK_STATE_NORMAL]);
1773 }
1774
1775 static gboolean
1776 ev_view_scroll_event (GtkWidget *widget, GdkEventScroll *event)
1777 {
1778         EvView *view = EV_VIEW (widget);
1779         guint state;
1780
1781         state = event->state & gtk_accelerator_get_default_mod_mask ();
1782
1783         if (state == GDK_CONTROL_MASK && view->presentation == FALSE) {
1784                 ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1785
1786                 if (event->direction == GDK_SCROLL_UP ||
1787                     event->direction == GDK_SCROLL_LEFT) {
1788                         if (ev_view_can_zoom_in (view)) {
1789                                 ev_view_zoom_in (view);
1790                         }
1791                 } else {
1792                         if (ev_view_can_zoom_out (view)) {
1793                                 ev_view_zoom_out (view);
1794                         }
1795                 }
1796
1797                 return TRUE;
1798         }
1799
1800         view->jump_to_find_result = FALSE;
1801         /* Shift+Wheel scrolls the in the perpendicular direction */
1802         if (state & GDK_SHIFT_MASK) {
1803                 if (event->direction == GDK_SCROLL_UP)
1804                         event->direction = GDK_SCROLL_LEFT;
1805                 if (event->direction == GDK_SCROLL_LEFT)
1806                         event->direction = GDK_SCROLL_UP;
1807                 if (event->direction == GDK_SCROLL_DOWN)
1808                         event->direction = GDK_SCROLL_RIGHT;
1809                 if (event->direction == GDK_SCROLL_RIGHT)
1810                         event->direction = GDK_SCROLL_DOWN;
1811
1812                 event->state &= ~GDK_SHIFT_MASK;
1813                 state &= ~GDK_SHIFT_MASK;
1814         }
1815
1816         if (state == 0 && view->presentation) {
1817                 switch (event->direction) {
1818                         case GDK_SCROLL_DOWN:
1819                         case GDK_SCROLL_RIGHT:
1820                                 ev_view_next_page (view);
1821                                 break;
1822                         case GDK_SCROLL_UP:
1823                         case GDK_SCROLL_LEFT:
1824                                 ev_view_previous_page (view);
1825                                 break;
1826                 }
1827
1828                 return TRUE;
1829         }
1830
1831         return FALSE;
1832 }
1833
1834 static EvViewSelection *
1835 find_selection_for_page (EvView *view,
1836                          gint    page)
1837 {
1838         GList *list;
1839
1840         for (list = view->selection_info.selections; list != NULL; list = list->next) {
1841                 EvViewSelection *selection;
1842
1843                 selection = (EvViewSelection *) list->data;
1844
1845                 if (selection->page == page)
1846                         return selection;
1847         }
1848
1849         return NULL;
1850 }
1851
1852 static void
1853 draw_end_presentation_page (EvView       *view,
1854                             GdkRectangle *page_area)
1855 {
1856         PangoLayout *layout;
1857         PangoFontDescription *font_desc;
1858         gchar *markup;
1859         const gchar *text = _("End of presentation. Press Escape to exit.");
1860
1861         if (view->presentation_state != EV_PRESENTATION_END)
1862                 return;
1863
1864         layout = gtk_widget_create_pango_layout (GTK_WIDGET (view), NULL);
1865         markup = g_strdup_printf ("<span foreground=\"white\">%s</span>", text);
1866         pango_layout_set_markup (layout, markup, -1);
1867         g_free (markup);
1868
1869         font_desc = pango_font_description_new ();
1870         pango_font_description_set_size (font_desc, 16 * PANGO_SCALE);
1871         pango_layout_set_font_description (layout, font_desc);
1872
1873         gtk_paint_layout (GTK_WIDGET (view)->style,
1874                           GTK_WIDGET (view)->window,
1875                           GTK_WIDGET_STATE (view),
1876                           FALSE,
1877                           page_area,
1878                           GTK_WIDGET (view),
1879                           NULL,
1880                           page_area->x + 15,
1881                           page_area->y + 15,
1882                           layout);
1883
1884         pango_font_description_free (font_desc);
1885         g_object_unref (layout);
1886 }
1887
1888 static gboolean
1889 ev_view_expose_event (GtkWidget      *widget,
1890                       GdkEventExpose *event)
1891 {
1892         EvView *view = EV_VIEW (widget);
1893         int i;
1894
1895         if (view->presentation) {
1896                 switch (view->presentation_state) {
1897                         case EV_PRESENTATION_END: {
1898                                 GdkRectangle area = {0};
1899
1900                                 area.width = widget->allocation.width;
1901                                 area.height = widget->allocation.height;
1902
1903                                 draw_end_presentation_page (view, &area);
1904                         }
1905                                 return FALSE;
1906                         case EV_PRESENTATION_BLACK:
1907                         case EV_PRESENTATION_WHITE:
1908                                 return FALSE;
1909                         case EV_PRESENTATION_NORMAL:
1910                         default:
1911                                 break;
1912                 }
1913         } else if (view->loading) {
1914                 GdkRectangle area = {0};
1915
1916                 area.width = widget->allocation.width;
1917                 area.height = widget->allocation.height;
1918
1919                 draw_loading_text (view,
1920                                    &area,
1921                                    &(event->area));
1922         }
1923
1924         if (view->document == NULL)
1925                 return FALSE;
1926
1927         for (i = view->start_page; i <= view->end_page; i++) {
1928                 GdkRectangle page_area;
1929                 GtkBorder border;
1930                 gboolean page_ready = TRUE;
1931
1932                 if (!get_page_extents (view, i, &page_area, &border))
1933                         continue;
1934
1935                 page_area.x -= view->scroll_x;
1936                 page_area.y -= view->scroll_y;
1937
1938                 draw_one_page (view, i, &page_area, &border, &(event->area), &page_ready);
1939
1940                 if (page_ready && EV_IS_DOCUMENT_FIND (view->document))
1941                         highlight_find_results (view, i);
1942         }
1943
1944         return FALSE;
1945 }
1946
1947 static gboolean
1948 ev_view_do_popup_menu (EvView *view,
1949                        gdouble x,
1950                        gdouble y)
1951 {
1952         EvLink  *link;
1953         EvImage *image;
1954
1955         image = ev_view_get_image_at_location (view, x, y);
1956         if (image) {
1957                 g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, image);
1958                 return TRUE;
1959         }
1960
1961         link = ev_view_get_link_at_location (view, x, y);
1962         if (link) {
1963                 g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, link);
1964                 return TRUE;
1965         }
1966
1967         g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, NULL);
1968
1969         return TRUE;
1970 }
1971
1972 static gboolean
1973 ev_view_popup_menu (GtkWidget *widget)
1974 {
1975         gint x, y;
1976
1977         gtk_widget_get_pointer (widget, &x, &y);
1978         return ev_view_do_popup_menu (EV_VIEW (widget), x, y);
1979 }
1980
1981 static gboolean
1982 ev_view_button_press_event (GtkWidget      *widget,
1983                             GdkEventButton *event)
1984 {
1985         EvView *view = EV_VIEW (widget);
1986
1987         if (!GTK_WIDGET_HAS_FOCUS (widget)) {
1988                 gtk_widget_grab_focus (widget);
1989         }
1990
1991         view->pressed_button = event->button;
1992         view->selection_info.in_drag = FALSE;
1993
1994         switch (event->button) {
1995                 case 1: {
1996                         EvImage *image;
1997
1998                         if (view->selection_info.selections) {
1999                                 if (location_in_selected_text (view,
2000                                                                event->x + view->scroll_x,
2001                                                                event->y + view->scroll_y)) {
2002                                         view->selection_info.in_drag = TRUE;
2003                                 } else {
2004                                         clear_selection (view);
2005                                 }
2006
2007                                 gtk_widget_queue_draw (widget);
2008                         } else if ((image = ev_view_get_image_at_location (view, event->x, event->y))) {
2009                                 if (view->image_dnd_info.image)
2010                                         g_object_unref (view->image_dnd_info.image);
2011                                 view->image_dnd_info.image = g_object_ref (image);
2012                                 view->image_dnd_info.in_drag = TRUE;
2013
2014                                 view->image_dnd_info.start.x = event->x + view->scroll_x;
2015                                 view->image_dnd_info.start.y = event->y + view->scroll_y;
2016                         }
2017
2018                         view->selection_info.start.x = event->x + view->scroll_x;
2019                         view->selection_info.start.y = event->y + view->scroll_y;
2020                 }
2021                         return TRUE;
2022                 case 2:
2023                         /* use root coordinates as reference point because
2024                          * scrolling changes window relative coordinates */
2025                         view->drag_info.start.x = event->x_root;
2026                         view->drag_info.start.y = event->y_root;
2027                         view->drag_info.hadj = gtk_adjustment_get_value (view->hadjustment);
2028                         view->drag_info.vadj = gtk_adjustment_get_value (view->vadjustment);
2029
2030                         ev_view_set_cursor (view, EV_VIEW_CURSOR_DRAG);
2031
2032                         return TRUE;
2033                 case 3:
2034                         return ev_view_do_popup_menu (view, event->x, event->y);
2035         }
2036
2037         return FALSE;
2038 }
2039
2040 /*** Drag and Drop ***/
2041 static void
2042 ev_view_drag_data_get (GtkWidget        *widget,
2043                        GdkDragContext   *context,
2044                        GtkSelectionData *selection_data,
2045                        guint             info,
2046                        guint             time)
2047 {
2048         EvView *view = EV_VIEW (widget);
2049
2050         switch (info) {
2051                 case TARGET_DND_TEXT:
2052                         if (view->selection_info.selections &&
2053                             ev_document_can_get_text (view->document)) {
2054                                 gchar *text;
2055
2056                                 text = get_selected_text (view);
2057
2058                                 gtk_selection_data_set_text (selection_data,
2059                                                              text,
2060                                                              strlen (text));
2061
2062                                 g_free (text);
2063                         }
2064                         break;
2065                 case TARGET_DND_IMAGE:
2066                         if (view->image_dnd_info.image) {
2067                                 GdkPixbuf *pixbuf;
2068
2069                                 pixbuf = ev_image_get_pixbuf (view->image_dnd_info.image);
2070                                 gtk_selection_data_set_pixbuf (selection_data, pixbuf);
2071                         }
2072                         break;
2073                 case TARGET_DND_URI:
2074                         if (view->image_dnd_info.image) {
2075                                 const gchar *tmp_uri;
2076                                 gchar      **uris;
2077
2078                                 tmp_uri = ev_image_save_tmp (view->image_dnd_info.image);
2079
2080                                 uris = g_new0 (gchar *, 2);
2081                                 uris[0] = (gchar *)tmp_uri;
2082
2083                                 gtk_selection_data_set_uris (selection_data, uris);
2084
2085                                 /* g_free instead of g_strfreev since tmp_uri is const */
2086                                 g_free (uris);
2087                         }
2088         }
2089 }
2090
2091 static gboolean
2092 ev_view_drag_motion (GtkWidget      *widget,
2093                      GdkDragContext *context,
2094                      gint            x,
2095                      gint            y,
2096                      guint           time)
2097 {
2098         if (gtk_drag_get_source_widget (context) == widget)
2099                 gdk_drag_status (context, 0, time);
2100         else
2101                 gdk_drag_status (context, context->suggested_action, time);
2102
2103         return TRUE;
2104 }
2105
2106 static void
2107 ev_view_drag_data_received (GtkWidget          *widget,
2108                             GdkDragContext     *context,
2109                             gint                x,
2110                             gint                y,
2111                             GtkSelectionData   *selection_data,
2112                             guint               info,
2113                             guint               time)
2114 {
2115         gchar  **uris;
2116         gint     i = 0;
2117         GSList  *uri_list = NULL;
2118
2119         uris = gtk_selection_data_get_uris (selection_data);
2120         if (!uris) {
2121                 gtk_drag_finish (context, FALSE, FALSE, time);
2122                 return;
2123         }
2124
2125         for (i = 0; uris[i]; i++) {
2126                 uri_list = g_slist_prepend (uri_list, (gpointer) uris[i]);
2127         }
2128
2129         ev_application_open_uri_list (EV_APP, uri_list,
2130                                       gtk_widget_get_screen (widget),
2131                                       0);
2132         gtk_drag_finish (context, TRUE, FALSE, time);
2133
2134         g_strfreev (uris);
2135         g_slist_free (uri_list);
2136 }
2137
2138
2139 static gboolean
2140 selection_update_idle_cb (EvView *view)
2141 {
2142         compute_selections (view, &view->selection_info.start, &view->motion);
2143         view->selection_update_id = 0;
2144         return FALSE;
2145 }
2146
2147 static gboolean
2148 selection_scroll_timeout_cb (EvView *view)
2149 {
2150         gint x, y, shift = 0;
2151         GtkWidget *widget = GTK_WIDGET (view);
2152
2153         gtk_widget_get_pointer (widget, &x, &y);
2154
2155         if (y > widget->allocation.height) {
2156                 shift = (y - widget->allocation.height) / 2;
2157         } else if (y < 0) {
2158                 shift = y / 2;
2159         }
2160
2161         if (shift)
2162                 gtk_adjustment_set_value (view->vadjustment,
2163                                           CLAMP (view->vadjustment->value + shift,
2164                                           view->vadjustment->lower,
2165                                           view->vadjustment->upper -
2166                                           view->vadjustment->page_size));
2167
2168         if (x > widget->allocation.width) {
2169                 shift = (x - widget->allocation.width) / 2;
2170         } else if (x < 0) {
2171                 shift = x / 2;
2172         }
2173
2174         if (shift)
2175                 gtk_adjustment_set_value (view->hadjustment,
2176                                           CLAMP (view->hadjustment->value + shift,
2177                                           view->hadjustment->lower,
2178                                           view->hadjustment->upper -
2179                                           view->hadjustment->page_size));
2180
2181         return TRUE;
2182 }
2183
2184 static gboolean
2185 ev_view_motion_notify_event (GtkWidget      *widget,
2186                              GdkEventMotion *event)
2187 {
2188         EvView *view = EV_VIEW (widget);
2189         gint x, y;
2190
2191         if (!view->document)
2192                 return FALSE;
2193
2194         if (event->is_hint || event->window != widget->window) {
2195             gtk_widget_get_pointer (widget, &x, &y);
2196         } else {
2197             x = event->x;
2198             y = event->y;
2199         }
2200
2201         if (view->selection_info.in_drag) {
2202                 if (gtk_drag_check_threshold (widget,
2203                                               view->selection_info.start.x,
2204                                               view->selection_info.start.y,
2205                                               x, y)) {
2206                         GtkTargetList *target_list = gtk_target_list_new (NULL, 0);
2207
2208                         gtk_target_list_add_text_targets (target_list, TARGET_DND_TEXT);
2209
2210                         gtk_drag_begin (widget, target_list,
2211                                         GDK_ACTION_COPY,
2212                                         1, (GdkEvent *)event);
2213
2214                         view->selection_info.in_drag = FALSE;
2215
2216                         gtk_target_list_unref (target_list);
2217
2218                         return TRUE;
2219                 }
2220         } else if (view->image_dnd_info.in_drag) {
2221                 if (gtk_drag_check_threshold (widget,
2222                                               view->selection_info.start.x,
2223                                               view->selection_info.start.y,
2224                                               x, y)) {
2225                         GtkTargetList *target_list = gtk_target_list_new (NULL, 0);
2226
2227                         gtk_target_list_add_uri_targets (target_list, TARGET_DND_URI);
2228                         gtk_target_list_add_image_targets (target_list, TARGET_DND_IMAGE, TRUE);
2229
2230                         gtk_drag_begin (widget, target_list,
2231                                         GDK_ACTION_COPY,
2232                                         1, (GdkEvent *)event);
2233
2234                         view->image_dnd_info.in_drag = FALSE;
2235
2236                         gtk_target_list_unref (target_list);
2237
2238                         return TRUE;
2239                 }
2240         }
2241
2242         /* For the Evince 0.4.x release, we limit selection to un-rotated
2243          * documents only.
2244          */
2245         if (view->pressed_button == 1 && view->rotation == 0) {
2246
2247                 /* Schedule timeout to scroll during selection and additionally
2248                  * scroll once to allow arbitrary speed. */
2249                 if (!view->selection_scroll_id)
2250                     view->selection_scroll_id = g_timeout_add (SCROLL_TIME, (GSourceFunc)selection_scroll_timeout_cb, view);
2251                 else
2252                     selection_scroll_timeout_cb (view);
2253
2254                 view->selection_info.in_selection = TRUE;
2255                 view->motion.x = x + view->scroll_x;
2256                 view->motion.y = y + view->scroll_y;
2257
2258                 /* Queue an idle to handle the motion.  We do this because
2259                  * handling any selection events in the motion could be slower
2260                  * than new motion events reach us.  We always put it in the
2261                  * idle to make sure we catch up and don't visibly lag the
2262                  * mouse. */
2263                 if (!view->selection_update_id)
2264                         view->selection_update_id = g_idle_add ((GSourceFunc)selection_update_idle_cb, view);
2265
2266                 return TRUE;
2267         } else if (view->pressed_button == 2) {
2268                 if (!view->drag_info.in_drag) {
2269                         gboolean start;
2270
2271                         start = gtk_drag_check_threshold (widget,
2272                                                           view->drag_info.start.x,
2273                                                           view->drag_info.start.y,
2274                                                           event->x_root,
2275                                                           event->y_root);
2276                         view->drag_info.in_drag = start;
2277                 }
2278
2279                 if (view->drag_info.in_drag) {
2280                         int dx, dy;
2281                         gdouble dhadj_value, dvadj_value;
2282
2283                         dx = event->x_root - view->drag_info.start.x;
2284                         dy = event->y_root - view->drag_info.start.y;
2285
2286                         dhadj_value = view->hadjustment->page_size *
2287                                       (gdouble)dx / widget->allocation.width;
2288                         dvadj_value = view->vadjustment->page_size *
2289                                       (gdouble)dy / widget->allocation.height;
2290
2291                         /* clamp scrolling to visible area */
2292                         gtk_adjustment_set_value (view->hadjustment,
2293                                                   MIN(view->drag_info.hadj - dhadj_value,
2294                                                       view->hadjustment->upper -
2295                                                       view->hadjustment->page_size));
2296                         gtk_adjustment_set_value (view->vadjustment,
2297                                                   MIN(view->drag_info.vadj - dvadj_value,
2298                                                       view->vadjustment->upper -
2299                                                       view->vadjustment->page_size));
2300
2301                         return TRUE;
2302                 }
2303         } else if (view->pressed_button <= 0) {
2304                 handle_link_over_xy (view, x, y);
2305                 return TRUE;
2306         }
2307
2308         return FALSE;
2309 }
2310
2311 static gboolean
2312 ev_view_button_release_event (GtkWidget      *widget,
2313                               GdkEventButton *event)
2314 {
2315         EvView *view = EV_VIEW (widget);
2316         EvLink *link;
2317
2318         if (view->pressed_button == 2) {
2319                 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
2320         }
2321
2322         if (view->document && view->pressed_button != 3) {
2323                 link = ev_view_get_link_at_location (view, event->x, event->y);
2324         } else {
2325                 link = NULL;
2326         }
2327
2328         view->pressed_button = -1;
2329         view->drag_info.in_drag = FALSE;
2330         view->image_dnd_info.in_drag = FALSE;
2331
2332         if (view->selection_scroll_id) {
2333             g_source_remove (view->selection_scroll_id);
2334             view->selection_scroll_id = 0;
2335         }
2336         if (view->selection_update_id) {
2337             g_source_remove (view->selection_update_id);
2338             view->selection_update_id = 0;
2339         }
2340
2341         if (view->selection_info.selections) {
2342                 ev_view_update_primary_selection (view);
2343
2344                 if (view->selection_info.in_drag) {
2345                         clear_selection (view);
2346                         gtk_widget_queue_draw (widget);
2347                 }
2348
2349                 view->selection_info.in_drag = FALSE;
2350         } else if (link) {
2351                 if (event->button == 2) {
2352                         EvLinkAction    *action;
2353                         EvLinkActionType type;
2354
2355                         action = ev_link_get_action (link);
2356                         if (!action)
2357                                 return FALSE;
2358
2359                         type = ev_link_action_get_action_type (action);
2360                         if (type == EV_LINK_ACTION_TYPE_GOTO_DEST) {
2361                                 g_signal_emit (view,
2362                                                signals[SIGNAL_EXTERNAL_LINK],
2363                                                0, action);
2364                         }
2365                 } else {
2366                         ev_view_handle_link (view, link);
2367                 }
2368         } else if (view->presentation) {
2369                 switch (event->button) {
2370                         case 1:
2371                                 ev_view_next_page (view);
2372                                 return TRUE;
2373                         case 3:
2374                                 ev_view_previous_page (view);
2375                                 return TRUE;
2376                 }
2377         }
2378
2379         return FALSE;
2380 }
2381
2382 /* Goto Window */
2383 /* Cut and paste from gtkwindow.c */
2384 static void
2385 send_focus_change (GtkWidget *widget,
2386                    gboolean   in)
2387 {
2388         GdkEvent *fevent = gdk_event_new (GDK_FOCUS_CHANGE);
2389
2390         g_object_ref (widget);
2391
2392         if (in)
2393                 GTK_WIDGET_SET_FLAGS (widget, GTK_HAS_FOCUS);
2394         else
2395                 GTK_WIDGET_UNSET_FLAGS (widget, GTK_HAS_FOCUS);
2396
2397         fevent->focus_change.type = GDK_FOCUS_CHANGE;
2398         fevent->focus_change.window = g_object_ref (widget->window);
2399         fevent->focus_change.in = in;
2400
2401         gtk_widget_event (widget, fevent);
2402
2403         g_object_notify (G_OBJECT (widget), "has-focus");
2404
2405         g_object_unref (widget);
2406         gdk_event_free (fevent);
2407 }
2408
2409 static void
2410 ev_view_goto_window_hide (EvView *view)
2411 {
2412         /* send focus-in event */
2413         send_focus_change (view->goto_entry, FALSE);
2414         gtk_widget_hide (view->goto_window);
2415         gtk_entry_set_text (GTK_ENTRY (view->goto_entry), "");
2416 }
2417
2418 static gboolean
2419 ev_view_goto_window_delete_event (GtkWidget   *widget,
2420                                   GdkEventAny *event,
2421                                   EvView      *view)
2422 {
2423         ev_view_goto_window_hide (view);
2424
2425         return TRUE;
2426 }
2427
2428 static gboolean
2429 key_is_numeric (guint keyval)
2430 {
2431         return ((keyval >= GDK_0 && keyval <= GDK_9) ||
2432                 (keyval >= GDK_KP_0 && keyval <= GDK_KP_9));
2433 }
2434
2435 static gboolean
2436 ev_view_goto_window_key_press_event (GtkWidget   *widget,
2437                                      GdkEventKey *event,
2438                                      EvView      *view)
2439 {
2440         switch (event->keyval) {
2441                 case GDK_Escape:
2442                 case GDK_Tab:
2443                 case GDK_KP_Tab:
2444                 case GDK_ISO_Left_Tab:
2445                         ev_view_goto_window_hide (view);
2446                         return TRUE;
2447                 case GDK_Return:
2448                 case GDK_KP_Enter:
2449                 case GDK_ISO_Enter:
2450                         return FALSE;
2451                 default:
2452                         if (!key_is_numeric (event->keyval))
2453                                 return TRUE;
2454         }
2455
2456         return FALSE;
2457 }
2458
2459 static gboolean
2460 ev_view_goto_window_button_press_event (GtkWidget      *widget,
2461                                         GdkEventButton *event,
2462                                         EvView         *view)
2463 {
2464         ev_view_goto_window_hide (view);
2465
2466         return TRUE;
2467 }
2468
2469 static void
2470 ev_view_goto_entry_activate (GtkEntry *entry,
2471                              EvView   *view)
2472 {
2473         const gchar *text;
2474         gint         page;
2475
2476         text = gtk_entry_get_text (entry);
2477         page = atoi (text) - 1;
2478
2479         ev_view_goto_window_hide (view);
2480
2481         if (page >= 0 &&
2482             page < ev_page_cache_get_n_pages (view->page_cache))
2483                 ev_page_cache_set_current_page (view->page_cache, page);
2484 }
2485
2486 static void
2487 ev_view_goto_window_create (EvView *view)
2488 {
2489         GtkWidget *frame, *hbox, *toplevel, *label;
2490
2491         toplevel = gtk_widget_get_toplevel (GTK_WIDGET (view));
2492
2493         if (view->goto_window) {
2494                 if (GTK_WINDOW (toplevel)->group)
2495                         gtk_window_group_add_window (GTK_WINDOW (toplevel)->group,
2496                                                      GTK_WINDOW (view->goto_window));
2497                 else if (GTK_WINDOW (view->goto_window)->group)
2498                         gtk_window_group_remove_window (GTK_WINDOW (view->goto_window)->group,
2499                                                         GTK_WINDOW (view->goto_window));
2500                 return;
2501         }
2502
2503         view->goto_window = gtk_window_new (GTK_WINDOW_POPUP);
2504
2505         if (GTK_WINDOW (toplevel)->group)
2506                 gtk_window_group_add_window (GTK_WINDOW (toplevel)->group,
2507                                              GTK_WINDOW (view->goto_window));
2508
2509         gtk_window_set_modal (GTK_WINDOW (view->goto_window), TRUE);
2510
2511         g_signal_connect (view->goto_window, "delete_event",
2512                           G_CALLBACK (ev_view_goto_window_delete_event),
2513                           view);
2514         g_signal_connect (view->goto_window, "key_press_event",
2515                           G_CALLBACK (ev_view_goto_window_key_press_event),
2516                           view);
2517         g_signal_connect (view->goto_window, "button_press_event",
2518                           G_CALLBACK (ev_view_goto_window_button_press_event),
2519                           view);
2520
2521         frame = gtk_frame_new (NULL);
2522         gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_ETCHED_IN);
2523         gtk_container_add (GTK_CONTAINER (view->goto_window), frame);
2524         gtk_widget_show (frame);
2525
2526         hbox = gtk_hbox_new (FALSE, 0);
2527         gtk_container_set_border_width (GTK_CONTAINER (hbox), 3);
2528         gtk_container_add (GTK_CONTAINER (frame), hbox);
2529         gtk_widget_show (hbox);
2530
2531         label = gtk_label_new(_("Jump to page:"));
2532         gtk_box_pack_start (GTK_BOX (hbox), label, TRUE, TRUE, 3);
2533         gtk_widget_show (label);
2534         gtk_widget_realize (label);
2535
2536         view->goto_entry = gtk_entry_new ();
2537         g_signal_connect (view->goto_entry, "activate",
2538                           G_CALLBACK (ev_view_goto_entry_activate),
2539                           view);
2540         gtk_box_pack_start_defaults (GTK_BOX (hbox), view->goto_entry);
2541         gtk_widget_show (view->goto_entry);
2542         gtk_widget_realize (view->goto_entry);
2543 }
2544
2545 static void
2546 ev_view_goto_entry_grab_focus (EvView *view)
2547 {
2548         GtkWidgetClass *entry_parent_class;
2549
2550         entry_parent_class = g_type_class_peek_parent (GTK_ENTRY_GET_CLASS (view->goto_entry));
2551         (entry_parent_class->grab_focus) (view->goto_entry);
2552
2553         send_focus_change (view->goto_entry, TRUE);
2554 }
2555
2556 static void
2557 ev_view_goto_window_send_key_event (EvView   *view,
2558                                     GdkEvent *event)
2559 {
2560         GdkEventKey *new_event;
2561         GdkScreen   *screen;
2562
2563         /* Move goto window off screen */
2564         screen = gtk_widget_get_screen (GTK_WIDGET (view));
2565         gtk_window_move (GTK_WINDOW (view->goto_window),
2566                          gdk_screen_get_width (screen) + 1,
2567                          gdk_screen_get_height (screen) + 1);
2568         gtk_widget_show (view->goto_window);
2569
2570         new_event = (GdkEventKey *) gdk_event_copy (event);
2571         g_object_unref (new_event->window);
2572         new_event->window = g_object_ref (view->goto_window->window);
2573         gtk_widget_realize (view->goto_window);
2574
2575         gtk_widget_event (view->goto_window, (GdkEvent *)new_event);
2576         gdk_event_free ((GdkEvent *)new_event);
2577         gtk_widget_hide (view->goto_window);
2578 }
2579
2580 static gboolean
2581 ev_view_key_press_event (GtkWidget   *widget,
2582                          GdkEventKey *event)
2583 {
2584         EvView *view = EV_VIEW (widget);
2585         EvPresentationState current;
2586
2587         if (!view->presentation ||
2588             view->presentation_state == EV_PRESENTATION_END)
2589                 return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
2590
2591
2592         current = view->presentation_state;
2593
2594         switch (event->keyval) {
2595                 case GDK_b:
2596                 case GDK_B:
2597                         view->presentation_state =
2598                                 (view->presentation_state == EV_PRESENTATION_BLACK) ?
2599                                 EV_PRESENTATION_NORMAL : EV_PRESENTATION_BLACK;
2600                         break;
2601                 case GDK_w:
2602                 case GDK_W:
2603                         view->presentation_state =
2604                                 (view->presentation_state == EV_PRESENTATION_WHITE) ?
2605                                 EV_PRESENTATION_NORMAL : EV_PRESENTATION_WHITE;
2606                         break;
2607                 default:
2608                         if (view->presentation_state == EV_PRESENTATION_BLACK ||
2609                             view->presentation_state == EV_PRESENTATION_WHITE) {
2610                                 view->presentation_state = EV_PRESENTATION_NORMAL;
2611                         }
2612         }
2613
2614         if (current == view->presentation_state) {
2615                 if (ev_page_cache_get_n_pages (view->page_cache) > 1 &&
2616                     key_is_numeric (event->keyval)) {
2617                         gint x, y;
2618
2619                         ev_view_goto_window_create (view);
2620                         ev_view_goto_window_send_key_event (view, (GdkEvent *)event);
2621                         gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
2622                         gtk_window_move (GTK_WINDOW (view->goto_window), x, y);
2623                         gtk_widget_show (view->goto_window);
2624                         ev_view_goto_entry_grab_focus (view);
2625
2626                         return TRUE;
2627                 }
2628
2629                 return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
2630         }
2631
2632         switch (view->presentation_state) {
2633                 case EV_PRESENTATION_NORMAL:
2634                 case EV_PRESENTATION_BLACK:
2635                         gdk_window_set_background (widget->window,
2636                                                    &widget->style->black);
2637                         break;
2638                 case EV_PRESENTATION_WHITE:
2639                         gdk_window_set_background (widget->window,
2640                                                    &widget->style->white);
2641                         break;
2642                 default:
2643                         return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
2644         }
2645
2646         gtk_widget_queue_draw (widget);
2647         return TRUE;
2648 }
2649
2650 static gint
2651 ev_view_focus_in (GtkWidget     *widget,
2652                   GdkEventFocus *event)
2653 {
2654         if (EV_VIEW (widget)->pixbuf_cache)
2655                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
2656         gtk_widget_queue_draw (widget);
2657
2658         return FALSE;
2659 }
2660
2661 static gint
2662 ev_view_focus_out (GtkWidget     *widget,
2663                      GdkEventFocus *event)
2664 {
2665         if (EV_VIEW (widget)->goto_window)
2666                 ev_view_goto_window_hide (EV_VIEW (widget));
2667
2668         if (EV_VIEW (widget)->pixbuf_cache)
2669                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
2670         gtk_widget_queue_draw (widget);
2671
2672         return FALSE;
2673 }
2674
2675 static gboolean
2676 ev_view_leave_notify_event (GtkWidget *widget, GdkEventCrossing   *event)
2677 {
2678         EvView *view = EV_VIEW (widget);
2679
2680         ev_view_set_status (view, NULL);
2681
2682         if (view->cursor == EV_VIEW_CURSOR_LINK ||
2683             view->cursor == EV_VIEW_CURSOR_IBEAM)
2684                 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
2685
2686         if (view->link_tooltip) {
2687                 view->hovered_link = NULL;
2688                 ev_tooltip_deactivate (EV_TOOLTIP (view->link_tooltip));
2689         }
2690
2691         return FALSE;
2692 }
2693
2694 static gboolean
2695 ev_view_enter_notify_event (GtkWidget *widget, GdkEventCrossing   *event)
2696 {
2697         EvView *view = EV_VIEW (widget);
2698
2699         handle_link_over_xy (view, event->x, event->y);
2700
2701         return FALSE;
2702 }
2703
2704 static void
2705 ev_view_style_set (GtkWidget *widget,
2706                    GtkStyle  *old_style)
2707 {
2708         if (EV_VIEW (widget)->pixbuf_cache)
2709                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
2710
2711         GTK_WIDGET_CLASS (ev_view_parent_class)->style_set (widget, old_style);
2712 }
2713
2714 /*** Drawing ***/
2715
2716 static guint32
2717 ev_gdk_color_to_rgb (const GdkColor *color)
2718 {
2719   guint32 result;
2720   result = (0xff0000 | (color->red & 0xff00));
2721   result <<= 8;
2722   result |= ((color->green & 0xff00) | (color->blue >> 8));
2723   return result;
2724 }
2725
2726 static void
2727 draw_rubberband (GtkWidget *widget, GdkWindow *window,
2728                  const GdkRectangle *rect, guchar alpha)
2729 {
2730         GdkGC *gc;
2731         GdkPixbuf *pixbuf;
2732         GdkColor *fill_color_gdk;
2733         guint fill_color;
2734
2735         fill_color_gdk = gdk_color_copy (&GTK_WIDGET (widget)->style->base[GTK_STATE_SELECTED]);
2736         fill_color = ev_gdk_color_to_rgb (fill_color_gdk) << 8 | alpha;
2737
2738         pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE, 8,
2739                                  rect->width, rect->height);
2740         gdk_pixbuf_fill (pixbuf, fill_color);
2741
2742         gdk_draw_pixbuf (window, NULL, pixbuf,
2743                          0, 0,
2744                          rect->x - EV_VIEW (widget)->scroll_x, rect->y - EV_VIEW (widget)->scroll_y,
2745                          rect->width, rect->height,
2746                          GDK_RGB_DITHER_NONE,
2747                          0, 0);
2748
2749         g_object_unref (pixbuf);
2750
2751         gc = gdk_gc_new (window);
2752         gdk_gc_set_rgb_fg_color (gc, fill_color_gdk);
2753         gdk_draw_rectangle (window, gc, FALSE,
2754                             rect->x - EV_VIEW (widget)->scroll_x, rect->y - EV_VIEW (widget)->scroll_y,
2755                             rect->width - 1,
2756                             rect->height - 1);
2757         g_object_unref (gc);
2758
2759         gdk_color_free (fill_color_gdk);
2760 }
2761
2762
2763 static void
2764 highlight_find_results (EvView *view, int page)
2765 {
2766         EvDocumentFind *find;
2767         int i, results = 0;
2768
2769         g_return_if_fail (EV_IS_DOCUMENT_FIND (view->document));
2770
2771         find = EV_DOCUMENT_FIND (view->document);
2772
2773         results = ev_document_find_get_n_results (find, page);
2774
2775         for (i = 0; i < results; i++) {
2776                 EvRectangle rectangle;
2777                 GdkRectangle view_rectangle;
2778                 guchar alpha;
2779
2780                 if (i == view->find_result && page == view->current_page) {
2781                         alpha = 0x90;
2782                 } else {
2783                         alpha = 0x20;
2784                 }
2785
2786                 ev_document_find_get_result (find, page, i, &rectangle);
2787                 doc_rect_to_view_rect (view, page, &rectangle, &view_rectangle);
2788                 draw_rubberband (GTK_WIDGET (view), GTK_WIDGET(view)->window,
2789                                  &view_rectangle, alpha);
2790         }
2791 }
2792
2793 static void
2794 draw_loading_text (EvView       *view,
2795                    GdkRectangle *page_area,
2796                    GdkRectangle *expose_area)
2797 {
2798         cairo_t *cr;
2799         gint     width, height;
2800
2801         /* Don't annoy users with loading messages during presentations.
2802          * FIXME: Temporary "workaround" for
2803          * http://bugzilla.gnome.org/show_bug.cgi?id=320352 */
2804         if (view->presentation)
2805                 return;
2806
2807         if (!view->loading_text) {
2808                 const gchar *loading_text;
2809                 PangoLayout *layout;
2810                 PangoFontDescription *font_desc;
2811                 PangoRectangle logical_rect;
2812                 gdouble real_scale;
2813                 gint target_width;
2814
2815                 loading_text = _("Loading...");
2816
2817                 ev_document_fc_mutex_lock ();
2818
2819                 layout = gtk_widget_create_pango_layout (GTK_WIDGET (view), loading_text);
2820
2821                 font_desc = pango_font_description_new ();
2822
2823                 /* We set the font to be 10 points, get the size, and scale appropriately */
2824                 pango_font_description_set_size (font_desc, 10 * PANGO_SCALE);
2825                 pango_layout_set_font_description (layout, font_desc);
2826                 pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
2827
2828                 /* Make sure we fit the middle of the page */
2829                 target_width = MAX (page_area->width / 2, 1);
2830                 real_scale = ((double)target_width / (double) logical_rect.width) * (PANGO_SCALE * 10);
2831                 pango_font_description_set_size (font_desc, (int)real_scale);
2832                 pango_layout_set_font_description (layout, font_desc);
2833                 pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
2834
2835                 view->loading_text = cairo_image_surface_create (CAIRO_FORMAT_ARGB32,
2836                                                                  logical_rect.width,
2837                                                                  logical_rect.height);
2838                 cr = cairo_create (view->loading_text);
2839                 cairo_set_source_rgb (cr,
2840                                       155 / (double)255,
2841                                       155 / (double)255,
2842                                       155 / (double)255);
2843                 pango_cairo_show_layout (cr, layout);
2844                 cairo_destroy (cr);
2845
2846                 pango_font_description_free (font_desc);
2847                 g_object_unref (layout);
2848
2849                 ev_document_fc_mutex_unlock ();
2850         }
2851
2852         width = cairo_image_surface_get_width (view->loading_text) / 2;
2853         height = (page_area->height - cairo_image_surface_get_height (view->loading_text)) / 2;
2854
2855         cr = gdk_cairo_create (GTK_WIDGET (view)->window);
2856         cairo_set_source_surface (cr, view->loading_text,
2857                                   page_area->x + width,
2858                                   page_area->y + height);
2859         cairo_paint (cr);
2860         cairo_destroy (cr);
2861 }
2862
2863 static void
2864 draw_one_page (EvView          *view,
2865                gint             page,
2866                GdkRectangle    *page_area,
2867                GtkBorder       *border,
2868                GdkRectangle    *expose_area,
2869                gboolean        *page_ready)
2870 {
2871         gint width, height;
2872         GdkPixbuf *current_pixbuf;
2873         GdkRectangle overlap;
2874         GdkRectangle real_page_area;
2875         EvViewSelection *selection;
2876         gint current_page;
2877
2878         g_assert (view->document);
2879
2880         if (! gdk_rectangle_intersect (page_area, expose_area, &overlap))
2881                 return;
2882
2883         current_page = ev_page_cache_get_current_page (view->page_cache);
2884         selection = find_selection_for_page (view, page);
2885         ev_page_cache_get_size (view->page_cache,
2886                                 page, view->rotation,
2887                                 view->scale,
2888                                 &width, &height);
2889         /* Render the document itself */
2890         real_page_area = *page_area;
2891
2892         real_page_area.x += border->left;
2893         real_page_area.y += border->top;
2894         real_page_area.width -= (border->left + border->right);
2895         real_page_area.height -= (border->top + border->bottom);
2896         *page_ready = TRUE;
2897
2898         if (!view->presentation) {
2899                 ev_document_misc_paint_one_page (GTK_WIDGET(view)->window,
2900                                                  GTK_WIDGET (view),
2901                                                  page_area, border,
2902                                                  page == current_page);
2903         }
2904
2905         if (gdk_rectangle_intersect (&real_page_area, expose_area, &overlap)) {
2906                 GdkPixbuf *selection_pixbuf = NULL;
2907                 GdkPixbuf *scaled_image;
2908                 GdkPixbuf *scaled_selection;
2909
2910                 current_pixbuf = ev_pixbuf_cache_get_pixbuf (view->pixbuf_cache, page);
2911
2912                 /* Get the selection pixbuf iff we have something to draw */
2913                 if (current_pixbuf && view->selection_mode == EV_VIEW_SELECTION_TEXT && selection)
2914                         selection_pixbuf = ev_pixbuf_cache_get_selection_pixbuf (view->pixbuf_cache,
2915                                                                                  page,
2916                                                                                  view->scale,
2917                                                                                  NULL);
2918
2919                 if (current_pixbuf == NULL)
2920                         scaled_image = NULL;
2921                 else if (width == gdk_pixbuf_get_width (current_pixbuf) &&
2922                          height == gdk_pixbuf_get_height (current_pixbuf))
2923                         scaled_image = g_object_ref (current_pixbuf);
2924                 else
2925                         /* FIXME: We don't want to scale the whole area, just the right
2926                          * area of it */
2927                         scaled_image = gdk_pixbuf_scale_simple (current_pixbuf,
2928                                                                 width, height,
2929                                                                 GDK_INTERP_NEAREST);
2930
2931                 if (selection_pixbuf == NULL)
2932                         scaled_selection = NULL;
2933                 else if (width == gdk_pixbuf_get_width (selection_pixbuf) &&
2934                          height == gdk_pixbuf_get_height (selection_pixbuf))
2935                         scaled_selection = g_object_ref (selection_pixbuf);
2936                 else
2937                         /* FIXME: We don't want to scale the whole area, just the right
2938                          * area of it */
2939                         scaled_selection = gdk_pixbuf_scale_simple (selection_pixbuf,
2940                                                                     width, height,
2941                                                                     GDK_INTERP_NEAREST);
2942
2943                 if (scaled_image) {
2944                         gdk_draw_pixbuf (GTK_WIDGET(view)->window,
2945                                          GTK_WIDGET (view)->style->fg_gc[GTK_STATE_NORMAL],
2946                                          scaled_image,
2947                                          overlap.x - real_page_area.x,
2948                                          overlap.y - real_page_area.y,
2949                                          overlap.x, overlap.y,
2950                                          overlap.width, overlap.height,
2951                                          GDK_RGB_DITHER_NORMAL,
2952                                          0, 0);
2953                         g_object_unref (scaled_image);
2954                 } else {
2955                         draw_loading_text (view,
2956                                            &real_page_area,
2957                                            expose_area);
2958                         *page_ready = FALSE;
2959                 }
2960
2961                 if (scaled_selection) {
2962                         gdk_draw_pixbuf (GTK_WIDGET(view)->window,
2963                                          GTK_WIDGET (view)->style->fg_gc[GTK_STATE_NORMAL],
2964                                          scaled_selection,
2965                                          overlap.x - real_page_area.x,
2966                                          overlap.y - real_page_area.y,
2967                                          overlap.x, overlap.y,
2968                                          overlap.width, overlap.height,
2969                                          GDK_RGB_DITHER_NORMAL,
2970                                          0, 0);
2971                         g_object_unref (scaled_selection);
2972                 }
2973         }
2974 }
2975
2976 /*** GObject functions ***/
2977
2978 static void
2979 ev_view_finalize (GObject *object)
2980 {
2981         EvView *view = EV_VIEW (object);
2982
2983         g_free (view->status);
2984         g_free (view->find_status);
2985
2986         clear_selection (view);
2987
2988         if (view->image_dnd_info.image)
2989                 g_object_unref (view->image_dnd_info.image);
2990         view->image_dnd_info.image = NULL;
2991
2992         G_OBJECT_CLASS (ev_view_parent_class)->finalize (object);
2993 }
2994
2995 static void
2996 ev_view_destroy (GtkObject *object)
2997 {
2998         EvView *view = EV_VIEW (object);
2999
3000         if (view->document) {
3001                 g_object_unref (view->document);
3002                 view->document = NULL;
3003         }
3004
3005         if (view->pixbuf_cache) {
3006                 g_object_unref (view->pixbuf_cache);
3007                 view->pixbuf_cache = NULL;
3008         }
3009
3010         if (view->link_tooltip) {
3011                 gtk_widget_destroy (view->link_tooltip);
3012                 view->link_tooltip = NULL;
3013         }
3014
3015         if (view->goto_window) {
3016                 gtk_widget_destroy (view->goto_window);
3017                 view->goto_window = NULL;
3018                 view->goto_entry = NULL;
3019         }
3020
3021         if (view->selection_scroll_id) {
3022             g_source_remove (view->selection_scroll_id);
3023             view->selection_scroll_id = 0;
3024         }
3025
3026         if (view->selection_update_id) {
3027             g_source_remove (view->selection_update_id);
3028             view->selection_update_id = 0;
3029         }
3030
3031         if (view->loading_text) {
3032                 cairo_surface_destroy (view->loading_text);
3033                 view->loading_text = NULL;
3034         }
3035
3036         ev_view_presentation_transition_stop (view);
3037
3038         ev_view_set_scroll_adjustments (view, NULL, NULL);
3039
3040         GTK_OBJECT_CLASS (ev_view_parent_class)->destroy (object);
3041 }
3042
3043 static void
3044 ev_view_set_property (GObject      *object,
3045                       guint         prop_id,
3046                       const GValue *value,
3047                       GParamSpec   *pspec)
3048 {
3049         EvView *view = EV_VIEW (object);
3050
3051         switch (prop_id) {
3052                 case PROP_CONTINUOUS:
3053                         ev_view_set_continuous (view, g_value_get_boolean (value));
3054                         break;
3055                 case PROP_DUAL_PAGE:
3056                         ev_view_set_dual_page (view, g_value_get_boolean (value));
3057                         break;
3058                 case PROP_FULLSCREEN:
3059                         ev_view_set_fullscreen (view, g_value_get_boolean (value));
3060                         break;
3061                 case PROP_PRESENTATION:
3062                         ev_view_set_presentation (view, g_value_get_boolean (value));
3063                         break;
3064                 case PROP_SIZING_MODE:
3065                         ev_view_set_sizing_mode (view, g_value_get_enum (value));
3066                         break;
3067                 case PROP_ZOOM:
3068                         ev_view_set_zoom (view, g_value_get_double (value), FALSE);
3069                         break;
3070                 case PROP_ROTATION:
3071                         ev_view_set_rotation (view, g_value_get_int (value));
3072                         break;
3073                 default:
3074                         G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
3075         }
3076 }
3077
3078 static AtkObject *
3079 ev_view_get_accessible (GtkWidget *widget)
3080 {
3081         static gboolean first_time = TRUE;
3082
3083         if (first_time) {
3084                 AtkObjectFactory *factory;
3085                 AtkRegistry *registry;
3086                 GType derived_type;
3087                 GType derived_atk_type;
3088
3089                 /*
3090                  * Figure out whether accessibility is enabled by looking at the
3091                  * type of the accessible object which would be created for
3092                  * the parent type of EvView.
3093                  */
3094                 derived_type = g_type_parent (EV_TYPE_VIEW);
3095
3096                 registry = atk_get_default_registry ();
3097                 factory = atk_registry_get_factory (registry,
3098                                                     derived_type);
3099                 derived_atk_type = atk_object_factory_get_accessible_type (factory);
3100                 if (g_type_is_a (derived_atk_type, GTK_TYPE_ACCESSIBLE))
3101                         atk_registry_set_factory_type (registry,
3102                                                        EV_TYPE_VIEW,
3103                                                        ev_view_accessible_factory_get_type ());
3104                 first_time = FALSE;
3105         }
3106         return GTK_WIDGET_CLASS (ev_view_parent_class)->get_accessible (widget);
3107 }
3108
3109 static void
3110 ev_view_get_property (GObject *object,
3111                       guint prop_id,
3112                       GValue *value,
3113                       GParamSpec *pspec)
3114 {
3115         EvView *view = EV_VIEW (object);
3116
3117         switch (prop_id) {
3118                 case PROP_STATUS:
3119                         g_value_set_string (value, view->status);
3120                         break;
3121                 case PROP_FIND_STATUS:
3122                         g_value_set_string (value, view->status);
3123                         break;
3124                 case PROP_CONTINUOUS:
3125                         g_value_set_boolean (value, view->continuous);
3126                         break;
3127                 case PROP_DUAL_PAGE:
3128                         g_value_set_boolean (value, view->dual_page);
3129                         break;
3130                 case PROP_FULLSCREEN:
3131                         g_value_set_boolean (value, view->fullscreen);
3132                         break;
3133                 case PROP_PRESENTATION:
3134                         g_value_set_boolean (value, view->presentation);
3135                         break;
3136                 case PROP_SIZING_MODE:
3137                         g_value_set_enum (value, view->sizing_mode);
3138                         break;
3139                 case PROP_ZOOM:
3140                         g_value_set_double (value, view->scale);
3141                         break;
3142                 case PROP_ROTATION:
3143                         g_value_set_int (value, view->rotation);
3144                         break;
3145                 case PROP_HAS_SELECTION:
3146                         g_value_set_boolean (value,
3147                                              view->selection_info.selections != NULL);
3148                         break;
3149                 default:
3150                         G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
3151         }
3152 }
3153
3154 static void
3155 ev_view_class_init (EvViewClass *class)
3156 {
3157         GObjectClass *object_class = G_OBJECT_CLASS (class);
3158         GtkObjectClass *gtk_object_class = GTK_OBJECT_CLASS (class);
3159         GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
3160         GtkBindingSet *binding_set;
3161
3162         object_class->finalize = ev_view_finalize;
3163         object_class->set_property = ev_view_set_property;
3164         object_class->get_property = ev_view_get_property;
3165
3166         widget_class->expose_event = ev_view_expose_event;
3167         widget_class->button_press_event = ev_view_button_press_event;
3168         widget_class->motion_notify_event = ev_view_motion_notify_event;
3169         widget_class->button_release_event = ev_view_button_release_event;
3170         widget_class->key_press_event = ev_view_key_press_event;
3171         widget_class->focus_in_event = ev_view_focus_in;
3172         widget_class->focus_out_event = ev_view_focus_out;
3173         widget_class->get_accessible = ev_view_get_accessible;
3174         widget_class->size_request = ev_view_size_request;
3175         widget_class->size_allocate = ev_view_size_allocate;
3176         widget_class->realize = ev_view_realize;
3177         widget_class->scroll_event = ev_view_scroll_event;
3178         widget_class->enter_notify_event = ev_view_enter_notify_event;
3179         widget_class->leave_notify_event = ev_view_leave_notify_event;
3180         widget_class->style_set = ev_view_style_set;
3181         widget_class->drag_data_get = ev_view_drag_data_get;
3182         widget_class->drag_motion = ev_view_drag_motion;
3183         widget_class->drag_data_received = ev_view_drag_data_received;
3184         widget_class->popup_menu = ev_view_popup_menu;
3185         gtk_object_class->destroy = ev_view_destroy;
3186
3187         class->set_scroll_adjustments = ev_view_set_scroll_adjustments;
3188         class->binding_activated = ev_view_scroll;
3189
3190         widget_class->set_scroll_adjustments_signal =
3191             g_signal_new ("set-scroll-adjustments",
3192                           G_OBJECT_CLASS_TYPE (object_class),
3193                           G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
3194                           G_STRUCT_OFFSET (EvViewClass, set_scroll_adjustments),
3195                           NULL, NULL,
3196                           ev_marshal_VOID__OBJECT_OBJECT,
3197                           G_TYPE_NONE, 2,
3198                           GTK_TYPE_ADJUSTMENT,
3199                           GTK_TYPE_ADJUSTMENT);
3200
3201         signals[SIGNAL_BINDING_ACTIVATED] = g_signal_new ("binding_activated",
3202                          G_TYPE_FROM_CLASS (object_class),
3203                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
3204                          G_STRUCT_OFFSET (EvViewClass, binding_activated),
3205                          NULL, NULL,
3206                          ev_marshal_VOID__ENUM_BOOLEAN,
3207                          G_TYPE_NONE, 2,
3208                          GTK_TYPE_SCROLL_TYPE,
3209                          G_TYPE_BOOLEAN);
3210
3211         signals[SIGNAL_ZOOM_INVALID] = g_signal_new ("zoom-invalid",
3212                          G_TYPE_FROM_CLASS (object_class),
3213                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
3214                          G_STRUCT_OFFSET (EvViewClass, zoom_invalid),
3215                          NULL, NULL,
3216                          ev_marshal_VOID__VOID,
3217                          G_TYPE_NONE, 0, G_TYPE_NONE);
3218         signals[SIGNAL_HANDLE_LINK] = g_signal_new ("handle-link",
3219                          G_TYPE_FROM_CLASS (object_class),
3220                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
3221                          G_STRUCT_OFFSET (EvViewClass, handle_link),
3222                          NULL, NULL,
3223                          g_cclosure_marshal_VOID__OBJECT,
3224                          G_TYPE_NONE, 1,
3225                          G_TYPE_OBJECT);
3226         signals[SIGNAL_EXTERNAL_LINK] = g_signal_new ("external-link",
3227                          G_TYPE_FROM_CLASS (object_class),
3228                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
3229                          G_STRUCT_OFFSET (EvViewClass, external_link),
3230                          NULL, NULL,
3231                          g_cclosure_marshal_VOID__OBJECT,
3232                          G_TYPE_NONE, 1,
3233                          G_TYPE_OBJECT);
3234         signals[SIGNAL_POPUP_MENU] = g_signal_new ("popup",
3235                          G_TYPE_FROM_CLASS (object_class),
3236                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
3237                          G_STRUCT_OFFSET (EvViewClass, popup_menu),
3238                          NULL, NULL,
3239                          g_cclosure_marshal_VOID__OBJECT,
3240                          G_TYPE_NONE, 1,
3241                          G_TYPE_OBJECT);
3242
3243         g_object_class_install_property (object_class,
3244                                          PROP_STATUS,
3245                                          g_param_spec_string ("status",
3246                                                               "Status Message",
3247                                                               "The status message",
3248                                                               NULL,
3249                                                               G_PARAM_READABLE));
3250
3251         g_object_class_install_property (object_class,
3252                                          PROP_FIND_STATUS,
3253                                          g_param_spec_string ("find-status",
3254                                                               "Find Status Message",
3255                                                               "The find status message",
3256                                                               NULL,
3257                                                               G_PARAM_READABLE));
3258
3259         g_object_class_install_property (object_class,
3260                                          PROP_CONTINUOUS,
3261                                          g_param_spec_boolean ("continuous",
3262                                                                "Continuous",
3263                                                                "Continuous scrolling mode",
3264                                                                TRUE,
3265                                                                G_PARAM_READWRITE));
3266
3267         g_object_class_install_property (object_class,
3268                                          PROP_DUAL_PAGE,
3269                                          g_param_spec_boolean ("dual-page",
3270                                                                "Dual Page",
3271                                                                "Two pages visible at once",
3272                                                                FALSE,
3273                                                                G_PARAM_READWRITE));
3274         g_object_class_install_property (object_class,
3275                                          PROP_FULLSCREEN,
3276                                          g_param_spec_boolean ("fullscreen",
3277                                                                "Full Screen",
3278                                                                "Draw page in a fullscreen fashion",
3279                                                                FALSE,
3280                                                                G_PARAM_READWRITE));
3281         g_object_class_install_property (object_class,
3282                                          PROP_PRESENTATION,
3283                                          g_param_spec_boolean ("presentation",
3284                                                                "Presentation",
3285                                                                "Draw page in presentation mode",
3286                                                                TRUE,
3287                                                                G_PARAM_READWRITE));
3288
3289         g_object_class_install_property (object_class,
3290                                          PROP_SIZING_MODE,
3291                                          g_param_spec_enum ("sizing-mode",
3292                                                             "Sizing Mode",
3293                                                             "Sizing Mode",
3294                                                             EV_TYPE_SIZING_MODE,
3295                                                             EV_SIZING_FIT_WIDTH,
3296                                                             G_PARAM_READWRITE));
3297
3298         g_object_class_install_property (object_class,
3299                                          PROP_ZOOM,
3300                                          g_param_spec_double ("zoom",
3301                                                               "Zoom factor",
3302                                                               "Zoom factor",
3303                                                               0,
3304                                                               G_MAXDOUBLE,
3305                                                               1.0,
3306                                                               G_PARAM_READWRITE));
3307         g_object_class_install_property (object_class,
3308                                          PROP_ROTATION,
3309                                          g_param_spec_double ("rotation",
3310                                                               "Rotation",
3311                                                               "Rotation",
3312                                                               0,
3313                                                               360,
3314                                                               0,
3315                                                               G_PARAM_READWRITE));
3316         g_object_class_install_property (object_class,
3317                                          PROP_HAS_SELECTION,
3318                                          g_param_spec_boolean ("has-selection",
3319                                                                "Has selection",
3320                                                                "The view has selections",
3321                                                                FALSE,
3322                                                                G_PARAM_READABLE));
3323
3324         binding_set = gtk_binding_set_by_class (class);
3325
3326         add_scroll_binding_keypad (binding_set, GDK_Left,  0, EV_SCROLL_STEP_BACKWARD, TRUE);
3327         add_scroll_binding_keypad (binding_set, GDK_Right, 0, EV_SCROLL_STEP_FORWARD,  TRUE);
3328         add_scroll_binding_keypad (binding_set, GDK_Left,  GDK_MOD1_MASK, EV_SCROLL_STEP_DOWN, TRUE);
3329         add_scroll_binding_keypad (binding_set, GDK_Right, GDK_MOD1_MASK, EV_SCROLL_STEP_UP,  TRUE);
3330         add_scroll_binding_keypad (binding_set, GDK_Up,    0, EV_SCROLL_STEP_BACKWARD, FALSE);
3331         add_scroll_binding_keypad (binding_set, GDK_Down,  0, EV_SCROLL_STEP_FORWARD,  FALSE);
3332         add_scroll_binding_keypad (binding_set, GDK_Up,    GDK_MOD1_MASK, EV_SCROLL_STEP_DOWN, FALSE);
3333         add_scroll_binding_keypad (binding_set, GDK_Down,  GDK_MOD1_MASK, EV_SCROLL_STEP_UP,  FALSE);
3334 }
3335
3336 static void
3337 ev_view_init (EvView *view)
3338 {
3339         GTK_WIDGET_SET_FLAGS (view, GTK_CAN_FOCUS);
3340
3341         view->spacing = 5;
3342         view->scale = 1.0;
3343         view->current_page = 0;
3344         view->pressed_button = -1;
3345         view->cursor = EV_VIEW_CURSOR_NORMAL;
3346         view->drag_info.in_drag = FALSE;
3347         view->selection_info.selections = NULL;
3348         view->selection_info.in_selection = FALSE;
3349         view->selection_info.in_drag = FALSE;
3350         view->selection_mode = EV_VIEW_SELECTION_TEXT;
3351         view->continuous = TRUE;
3352         view->dual_page = FALSE;
3353         view->presentation = FALSE;
3354         view->presentation_state = EV_PRESENTATION_NORMAL;
3355         view->fullscreen = FALSE;
3356         view->sizing_mode = EV_SIZING_FIT_WIDTH;
3357         view->pending_scroll = SCROLL_TO_KEEP_POSITION;
3358         view->jump_to_find_result = TRUE;
3359
3360         gtk_drag_dest_set (GTK_WIDGET (view),
3361                            GTK_DEST_DEFAULT_ALL,
3362                            view_drop_targets,
3363                            G_N_ELEMENTS (view_drop_targets),
3364                            GDK_ACTION_COPY);
3365 }
3366
3367 /*** Callbacks ***/
3368
3369 static void
3370 find_changed_cb (EvDocument *document, int page, EvView *view)
3371 {
3372         double percent;
3373         int n_pages;
3374
3375         percent = ev_document_find_get_progress
3376                         (EV_DOCUMENT_FIND (view->document));
3377         n_pages = ev_page_cache_get_n_pages (view->page_cache);
3378
3379         if (view->jump_to_find_result == TRUE) {
3380                 jump_to_find_page (view, EV_VIEW_FIND_NEXT, 0);
3381                 jump_to_find_result (view);
3382         }
3383         update_find_status_message (view, percent * n_pages >= n_pages - 1 );
3384         if (view->current_page == page)
3385                 gtk_widget_queue_draw (GTK_WIDGET (view));
3386 }
3387
3388 static void
3389 job_finished_cb (EvPixbufCache *pixbuf_cache,
3390                  EvView        *view)
3391 {
3392         gtk_widget_queue_draw (GTK_WIDGET (view));
3393 }
3394
3395 static void
3396 page_changed_cb (EvPageCache *page_cache,
3397                  int          new_page,
3398                  EvView      *view)
3399 {
3400         if (view->current_page != new_page) {
3401                 view->current_page = new_page;
3402                 view->pending_scroll = SCROLL_TO_PAGE_POSITION;
3403                 if (view->presentation)
3404                         ev_view_presentation_transition_start (view);
3405                 gtk_widget_queue_resize (GTK_WIDGET (view));
3406         } else {
3407                 gtk_widget_queue_draw (GTK_WIDGET (view));
3408         }
3409
3410         if (EV_IS_DOCUMENT_FIND (view->document)) {
3411                 view->find_result = 0;
3412                 update_find_status_message (view, TRUE);
3413         }
3414 }
3415
3416 static void on_adjustment_value_changed (GtkAdjustment  *adjustment,
3417                                          EvView *view)
3418 {
3419         int dx = 0, dy = 0;
3420
3421         if (! GTK_WIDGET_REALIZED (view))
3422                 return;
3423
3424         if (view->hadjustment) {
3425                 dx = view->scroll_x - (int) view->hadjustment->value;
3426                 view->scroll_x = (int) view->hadjustment->value;
3427         } else {
3428                 view->scroll_x = 0;
3429         }
3430
3431         if (view->vadjustment) {
3432                 dy = view->scroll_y - (int) view->vadjustment->value;
3433                 view->scroll_y = (int) view->vadjustment->value;
3434         } else {
3435                 view->scroll_y = 0;
3436         }
3437
3438
3439         if (view->pending_resize)
3440                 gtk_widget_queue_draw (GTK_WIDGET (view));
3441         else
3442                 gdk_window_scroll (GTK_WIDGET (view)->window, dx, dy);
3443
3444
3445         if (view->document)
3446                 view_update_range_and_current_page (view);
3447 }
3448
3449 GtkWidget*
3450 ev_view_new (void)
3451 {
3452         GtkWidget *view;
3453
3454         view = g_object_new (EV_TYPE_VIEW, NULL);
3455
3456         return view;
3457 }
3458
3459 static void
3460 setup_caches (EvView *view)
3461 {
3462         view->page_cache = ev_page_cache_get (view->document);
3463         g_signal_connect (view->page_cache, "page-changed", G_CALLBACK (page_changed_cb), view);
3464         view->pixbuf_cache = ev_pixbuf_cache_new (GTK_WIDGET (view), view->document);
3465         g_signal_connect (view->pixbuf_cache, "job-finished", G_CALLBACK (job_finished_cb), view);
3466 }
3467
3468 static void
3469 clear_caches (EvView *view)
3470 {
3471         if (view->pixbuf_cache) {
3472                 g_object_unref (view->pixbuf_cache);
3473                 view->pixbuf_cache = NULL;
3474         }
3475
3476         if (view->page_cache) {
3477                 view->page_cache = NULL;
3478         }
3479 }
3480
3481 void
3482 ev_view_set_loading (EvView       *view,
3483                      gboolean      loading)
3484 {
3485         view->loading = loading;
3486         gtk_widget_queue_draw (GTK_WIDGET (view));
3487 }
3488
3489 void
3490 ev_view_set_document (EvView     *view,
3491                       EvDocument *document)
3492 {
3493         g_return_if_fail (EV_IS_VIEW (view));
3494
3495         view->loading = FALSE;
3496
3497         if (document != view->document) {
3498                 clear_caches (view);
3499
3500                 if (view->document) {
3501                         g_signal_handlers_disconnect_by_func (view->document,
3502                                                               find_changed_cb,
3503                                                               view);
3504                         g_object_unref (view->document);
3505                         view->page_cache = NULL;
3506
3507                 }
3508
3509                 view->document = document;
3510                 view->find_result = 0;
3511
3512                 if (view->document) {
3513                         g_object_ref (view->document);
3514                         if (EV_IS_DOCUMENT_FIND (view->document)) {
3515                                 g_signal_connect (view->document,
3516                                                   "find_changed",
3517                                                   G_CALLBACK (find_changed_cb),
3518                                                   view);
3519                         }
3520
3521                         setup_caches (view);
3522                 }
3523
3524                 gtk_widget_queue_resize (GTK_WIDGET (view));
3525         }
3526 }
3527
3528 /*** Zoom and sizing mode ***/
3529
3530 #define EPSILON 0.0000001
3531 void
3532 ev_view_set_zoom (EvView   *view,
3533                   double    factor,
3534                   gboolean  relative)
3535 {
3536         double scale;
3537
3538         if (relative)
3539                 scale = view->scale * factor;
3540         else
3541                 scale = factor;
3542
3543         scale = CLAMP (scale, view->min_scale, view->max_scale);
3544
3545         if (ABS (view->scale - scale) < EPSILON)
3546                 return;
3547
3548         if (view->loading_text) {
3549                 cairo_surface_destroy (view->loading_text);
3550                 view->loading_text = NULL;
3551         }
3552
3553         view->scale = scale;
3554         view->pending_resize = TRUE;
3555
3556         gtk_widget_queue_resize (GTK_WIDGET (view));
3557
3558         g_object_notify (G_OBJECT (view), "zoom");
3559 }
3560
3561 double
3562 ev_view_get_zoom (EvView *view)
3563 {
3564         return view->scale;
3565 }
3566
3567 void
3568 ev_view_set_screen_dpi (EvView  *view,
3569                         gdouble  dpi)
3570 {
3571         g_return_if_fail (EV_IS_VIEW (view));
3572         g_return_if_fail (dpi > 0);
3573
3574         view->dpi = dpi;
3575         view->min_scale = MIN_SCALE * dpi / 72.0;
3576         view->max_scale = MAX_SCALE * dpi / 72.0;
3577 }
3578
3579 gboolean
3580 ev_view_get_continuous (EvView *view)
3581 {
3582         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
3583
3584         return view->continuous;
3585 }
3586
3587 void
3588 ev_view_set_continuous (EvView   *view,
3589                         gboolean  continuous)
3590 {
3591         g_return_if_fail (EV_IS_VIEW (view));
3592
3593         continuous = continuous != FALSE;
3594
3595         if (view->continuous != continuous) {
3596                 view->continuous = continuous;
3597                 view->pending_scroll = SCROLL_TO_PAGE_POSITION;
3598                 gtk_widget_queue_resize (GTK_WIDGET (view));
3599         }
3600
3601         g_object_notify (G_OBJECT (view), "continuous");
3602 }
3603
3604 gboolean
3605 ev_view_get_dual_page (EvView *view)
3606 {
3607         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
3608
3609         return view->dual_page;
3610 }
3611
3612 void
3613 ev_view_set_dual_page (EvView   *view,
3614                        gboolean  dual_page)
3615 {
3616         g_return_if_fail (EV_IS_VIEW (view));
3617
3618         dual_page = dual_page != FALSE;
3619
3620         if (view->dual_page == dual_page)
3621                 return;
3622
3623         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
3624         view->dual_page = dual_page;
3625         /* FIXME: if we're keeping the pixbuf cache around, we should extend the
3626          * preload_cache_size to be 2 if dual_page is set.
3627          */
3628         gtk_widget_queue_resize (GTK_WIDGET (view));
3629
3630         g_object_notify (G_OBJECT (view), "dual-page");
3631 }
3632
3633 void
3634 ev_view_set_fullscreen (EvView   *view,
3635                          gboolean  fullscreen)
3636 {
3637         g_return_if_fail (EV_IS_VIEW (view));
3638
3639         fullscreen = fullscreen != FALSE;
3640
3641         if (view->fullscreen == fullscreen)
3642                 return;
3643
3644         view->fullscreen = fullscreen;
3645         gtk_widget_queue_resize (GTK_WIDGET (view));
3646
3647         g_object_notify (G_OBJECT (view), "fullscreen");
3648 }
3649
3650 gboolean
3651 ev_view_get_fullscreen (EvView *view)
3652 {
3653         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
3654
3655         return view->fullscreen;
3656 }
3657
3658 void
3659 ev_view_set_presentation (EvView   *view,
3660                           gboolean  presentation)
3661 {
3662         g_return_if_fail (EV_IS_VIEW (view));
3663
3664         presentation = presentation != FALSE;
3665
3666         if (view->presentation == presentation)
3667                 return;
3668
3669         if (!presentation)
3670                 view->presentation_state = EV_PRESENTATION_NORMAL;
3671
3672         view->presentation = presentation;
3673         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
3674
3675         if (presentation) {
3676                 view->sizing_mode_saved = view->sizing_mode;
3677                 view->scale_saved = view->scale;
3678                 ev_view_set_sizing_mode (view, EV_SIZING_BEST_FIT);
3679         } else {
3680                 ev_view_set_sizing_mode (view, view->sizing_mode_saved);
3681                 ev_view_set_zoom (view, view->scale_saved, FALSE);
3682         }
3683
3684         gtk_widget_queue_resize (GTK_WIDGET (view));
3685
3686         if (presentation)
3687                 ev_view_presentation_transition_start (view);
3688         else
3689                 ev_view_presentation_transition_stop (view);
3690
3691         if (GTK_WIDGET_REALIZED (view)) {
3692                 if (view->presentation)
3693                         gdk_window_set_background (GTK_WIDGET(view)->window,
3694                                                    &GTK_WIDGET (view)->style->black);
3695                 else
3696                         gdk_window_set_background (GTK_WIDGET(view)->window,
3697                                                    &GTK_WIDGET (view)->style->mid [GTK_STATE_NORMAL]);
3698         }
3699
3700         g_object_notify (G_OBJECT (view), "presentation");
3701 }
3702
3703 gboolean
3704 ev_view_get_presentation (EvView *view)
3705 {
3706         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
3707
3708         return view->presentation;
3709 }
3710
3711 static gboolean
3712 transition_next_page (EvView *view)
3713 {
3714         ev_view_next_page (view);
3715
3716         return FALSE;
3717 }
3718
3719 static void
3720 ev_view_presentation_transition_stop (EvView *view)
3721 {
3722         if (view->trans_timeout_id > 0)
3723                 g_source_remove (view->trans_timeout_id);
3724         view->trans_timeout_id = 0;
3725 }
3726
3727 static void
3728 ev_view_presentation_transition_start (EvView *view)
3729 {
3730         gdouble duration;
3731
3732         if (!EV_IS_DOCUMENT_TRANSITION (view->document))
3733                 return;
3734
3735         ev_view_presentation_transition_stop (view);
3736
3737         duration = ev_document_transition_get_page_duration (EV_DOCUMENT_TRANSITION (view->document),
3738                                                              view->current_page);
3739         if (duration > 0)
3740                 view->trans_timeout_id = g_timeout_add (duration * 1000,
3741                                                         (GSourceFunc) transition_next_page,
3742                                                         view);
3743 }
3744
3745 void
3746 ev_view_set_sizing_mode (EvView       *view,
3747                          EvSizingMode  sizing_mode)
3748 {
3749         g_return_if_fail (EV_IS_VIEW (view));
3750
3751         if (view->sizing_mode == sizing_mode)
3752                 return;
3753
3754         view->sizing_mode = sizing_mode;
3755         gtk_widget_queue_resize (GTK_WIDGET (view));
3756
3757         g_object_notify (G_OBJECT (view), "sizing-mode");
3758 }
3759
3760 EvSizingMode
3761 ev_view_get_sizing_mode (EvView *view)
3762 {
3763         g_return_val_if_fail (EV_IS_VIEW (view), EV_SIZING_FREE);
3764
3765         return view->sizing_mode;
3766 }
3767
3768 gboolean
3769 ev_view_can_zoom_in (EvView *view)
3770 {
3771         return view->scale * ZOOM_IN_FACTOR <= view->max_scale;
3772 }
3773
3774 gboolean
3775 ev_view_can_zoom_out (EvView *view)
3776 {
3777         return view->scale * ZOOM_OUT_FACTOR >= view->min_scale;
3778 }
3779
3780 void
3781 ev_view_zoom_in (EvView *view)
3782 {
3783         g_return_if_fail (view->sizing_mode == EV_SIZING_FREE);
3784
3785         view->pending_scroll = SCROLL_TO_CENTER;
3786         ev_view_set_zoom (view, ZOOM_IN_FACTOR, TRUE);
3787 }
3788
3789 void
3790 ev_view_zoom_out (EvView *view)
3791 {
3792         g_return_if_fail (view->sizing_mode == EV_SIZING_FREE);
3793
3794         view->pending_scroll = SCROLL_TO_CENTER;
3795         ev_view_set_zoom (view, ZOOM_OUT_FACTOR, TRUE);
3796 }
3797
3798 void
3799 ev_view_rotate_right (EvView *view)
3800 {
3801         int rotation = view->rotation + 90;
3802
3803         if (rotation >= 360) {
3804                 rotation -= 360;
3805         }
3806
3807         ev_view_set_rotation (view, rotation);
3808 }
3809
3810 void
3811 ev_view_rotate_left (EvView *view)
3812 {
3813         int rotation = view->rotation - 90;
3814
3815         if (rotation < 0) {
3816                 rotation += 360;
3817         }
3818
3819         ev_view_set_rotation (view, rotation);
3820 }
3821
3822 void
3823 ev_view_set_rotation (EvView *view, int rotation)
3824 {
3825         view->rotation = rotation;
3826
3827         if (view->pixbuf_cache) {
3828                 ev_pixbuf_cache_clear (view->pixbuf_cache);
3829                 gtk_widget_queue_resize (GTK_WIDGET (view));
3830         }
3831
3832         if (rotation != 0)
3833                 clear_selection (view);
3834
3835         g_object_notify (G_OBJECT (view), "rotation");
3836 }
3837
3838 int
3839 ev_view_get_rotation (EvView *view)
3840 {
3841         return view->rotation;
3842 }
3843
3844 static double
3845 zoom_for_size_fit_width (int doc_width,
3846                          int doc_height,
3847                          int target_width,
3848                          int target_height,
3849                          int vsb_width)
3850 {
3851         double scale;
3852
3853         scale = (double)target_width / doc_width;
3854
3855         if (doc_height * scale > target_height)
3856                 scale = (double) (target_width - vsb_width) / doc_width;
3857
3858         return scale;
3859 }
3860
3861 static double
3862 zoom_for_size_fit_height (int doc_width,
3863                           int doc_height,
3864                           int target_width,
3865                           int target_height,
3866                           int vsb_height)
3867 {
3868         double scale;
3869
3870         scale = (double)target_height / doc_height;
3871
3872         if (doc_width * scale > target_width)
3873                 scale = (double) (target_height - vsb_height) / doc_height;
3874
3875         return scale;
3876 }
3877
3878 static double
3879 zoom_for_size_best_fit (int doc_width,
3880                         int doc_height,
3881                         int target_width,
3882                         int target_height,
3883                         int vsb_width,
3884                         int hsb_width)
3885 {
3886         double w_scale;
3887         double h_scale;
3888
3889         w_scale = (double)target_width / doc_width;
3890         h_scale = (double)target_height / doc_height;
3891
3892         if (doc_height * w_scale > target_height)
3893                 w_scale = (double) (target_width - vsb_width) / doc_width;
3894         if (doc_width * h_scale > target_width)
3895                 h_scale = (double) (target_height - hsb_width) / doc_height;
3896
3897         return MIN (w_scale, h_scale);
3898 }
3899
3900
3901 static void
3902 ev_view_zoom_for_size_presentation (EvView *view,
3903                                     int     width,
3904                                     int     height)
3905 {
3906         int doc_width, doc_height;
3907         gdouble scale;
3908
3909         ev_page_cache_get_size (view->page_cache,
3910                                 view->current_page,
3911                                 view->rotation,
3912                                 1.0,
3913                                 &doc_width,
3914                                 &doc_height);
3915         scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, 0, 0);
3916         ev_view_set_zoom (view, scale, FALSE);
3917 }
3918
3919 static void
3920 ev_view_zoom_for_size_continuous_and_dual_page (EvView *view,
3921                            int     width,
3922                            int     height,
3923                            int     vsb_width,
3924                            int     hsb_height)
3925 {
3926         int doc_width, doc_height;
3927         GtkBorder border;
3928         gdouble scale;
3929
3930         ev_page_cache_get_max_width (view->page_cache,
3931                                      view->rotation,
3932                                      1.0,
3933                                      &doc_width);
3934         ev_page_cache_get_max_height (view->page_cache,
3935                                       view->rotation,
3936                                       1.0,
3937                                       &doc_height);
3938         compute_border (view, doc_width, doc_height, &border);
3939
3940         doc_width = doc_width * 2;
3941         width -= (2 * (border.left + border.right) + 3 * view->spacing);
3942         height -= (border.top + border.bottom + 2 * view->spacing - 1);
3943
3944         /* FIXME: We really need to calculate the overall height here, not the
3945          * page height.  We assume there's always a vertical scrollbar for
3946          * now.  We need to fix this. */
3947         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
3948                 scale = zoom_for_size_fit_width (doc_width, doc_height, width - vsb_width, height, 0);
3949         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
3950                 scale = zoom_for_size_best_fit (doc_width, doc_height, width - vsb_width, height, 0, hsb_height);
3951         else
3952                 g_assert_not_reached ();
3953
3954         ev_view_set_zoom (view, scale, FALSE);
3955 }
3956
3957 static void
3958 ev_view_zoom_for_size_continuous (EvView *view,
3959                                   int     width,
3960                                   int     height,
3961                                   int     vsb_width,
3962                                   int     hsb_height)
3963 {
3964         int doc_width, doc_height;
3965         GtkBorder border;
3966         gdouble scale;
3967
3968         ev_page_cache_get_max_width (view->page_cache,
3969                                      view->rotation,
3970                                      1.0,
3971                                      &doc_width);
3972         ev_page_cache_get_max_height (view->page_cache,
3973                                       view->rotation,
3974                                       1.0,
3975                                       &doc_height);
3976         compute_border (view, doc_width, doc_height, &border);
3977
3978         width -= (border.left + border.right + 2 * view->spacing);
3979         height -= (border.top + border.bottom + 2 * view->spacing - 1);
3980
3981         /* FIXME: We really need to calculate the overall height here, not the
3982          * page height.  We assume there's always a vertical scrollbar for
3983          * now.  We need to fix this. */
3984         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
3985                 scale = zoom_for_size_fit_width (doc_width, doc_height, width - vsb_width, height, 0);
3986         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
3987                 scale = zoom_for_size_best_fit (doc_width, doc_height, width - vsb_width, height, 0, hsb_height);
3988         else
3989                 g_assert_not_reached ();
3990
3991         ev_view_set_zoom (view, scale, FALSE);
3992 }
3993
3994 static void
3995 ev_view_zoom_for_size_dual_page (EvView *view,
3996                                  int     width,
3997                                  int     height,
3998                                  int     vsb_width,
3999                                  int     hsb_height)
4000 {
4001         GtkBorder border;
4002         gint doc_width, doc_height;
4003         gdouble scale;
4004         gint other_page;
4005
4006         other_page = view->current_page ^ 1;
4007
4008         /* Find the largest of the two. */
4009         ev_page_cache_get_size (view->page_cache,
4010                                 view->current_page,
4011                                 view->rotation,
4012                                 1.0,
4013                                 &doc_width, &doc_height);
4014
4015         if (other_page < ev_page_cache_get_n_pages (view->page_cache)) {
4016                 gint width_2, height_2;
4017                 ev_page_cache_get_size (view->page_cache,
4018                                         other_page,
4019                                         view->rotation,
4020                                         1.0,
4021                                         &width_2, &height_2);
4022                 if (width_2 > doc_width)
4023                         doc_width = width_2;
4024                 if (height_2 > doc_height)
4025                         doc_height = height_2;
4026         }
4027         compute_border (view, doc_width, doc_height, &border);
4028
4029         doc_width = doc_width * 2;
4030         width -= ((border.left + border.right)* 2 + 3 * view->spacing);
4031         height -= (border.top + border.bottom + 2 * view->spacing);
4032
4033         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
4034                 scale = zoom_for_size_fit_width (doc_width, doc_height, width, height, vsb_width);
4035         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
4036                 scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, vsb_width, hsb_height);
4037         else
4038                 g_assert_not_reached ();
4039
4040         ev_view_set_zoom (view, scale, FALSE);
4041 }
4042
4043 static void
4044 ev_view_zoom_for_size_single_page (EvView *view,
4045                                    int     width,
4046                                    int     height,
4047                                    int     vsb_width,
4048                                    int     hsb_height)
4049 {
4050         int doc_width, doc_height;
4051         GtkBorder border;
4052         gdouble scale;
4053
4054         ev_page_cache_get_size (view->page_cache,
4055                                 view->current_page,
4056                                 view->rotation,
4057                                 1.0,
4058                                 &doc_width,
4059                                 &doc_height);
4060         /* Get an approximate border */
4061         compute_border (view, width, height, &border);
4062
4063         width -= (border.left + border.right + 2 * view->spacing);
4064         height -= (border.top + border.bottom + 2 * view->spacing);
4065
4066         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
4067                 scale = zoom_for_size_fit_width (doc_width, doc_height, width, height, vsb_width);
4068         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
4069                 scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, vsb_width, hsb_height);
4070         else
4071                 g_assert_not_reached ();
4072
4073         ev_view_set_zoom (view, scale, FALSE);
4074 }
4075
4076 void
4077 ev_view_set_zoom_for_size (EvView *view,
4078                            int     width,
4079                            int     height,
4080                            int     vsb_width,
4081                            int     hsb_height)
4082 {
4083         g_return_if_fail (view->sizing_mode == EV_SIZING_FIT_WIDTH ||
4084                           view->sizing_mode == EV_SIZING_BEST_FIT);
4085         g_return_if_fail (width >= 0);
4086         g_return_if_fail (height >= 0);
4087
4088         if (view->document == NULL)
4089                 return;
4090
4091         if (view->presentation)
4092                 ev_view_zoom_for_size_presentation (view, width, height);
4093         else if (view->continuous && view->dual_page)
4094                 ev_view_zoom_for_size_continuous_and_dual_page (view, width, height, vsb_width, hsb_height);
4095         else if (view->continuous)
4096                 ev_view_zoom_for_size_continuous (view, width, height, vsb_width, hsb_height);
4097         else if (view->dual_page)
4098                 ev_view_zoom_for_size_dual_page (view, width, height, vsb_width, hsb_height);
4099         else
4100                 ev_view_zoom_for_size_single_page (view, width, height, vsb_width, hsb_height);
4101 }
4102
4103 /*** Status text messages ***/
4104
4105 const char *
4106 ev_view_get_status (EvView *view)
4107 {
4108         g_return_val_if_fail (EV_IS_VIEW (view), NULL);
4109
4110         return view->status;
4111 }
4112
4113 static void
4114 ev_view_set_status (EvView *view, const char *message)
4115 {
4116         g_return_if_fail (EV_IS_VIEW (view));
4117
4118         if (message != view->status) {
4119                 g_free (view->status);
4120                 view->status = g_strdup (message);
4121                 g_object_notify (G_OBJECT (view), "status");
4122         }
4123 }
4124
4125 static void
4126 update_find_status_message (EvView *view, gboolean this_page)
4127 {
4128         char *message;
4129
4130         if (this_page) {
4131                 int results;
4132
4133                 results = ev_document_find_get_n_results
4134                                 (EV_DOCUMENT_FIND (view->document),
4135                                  view->current_page);
4136                 /* TRANS: Sometimes this could be better translated as
4137                    "%d hit(s) on this page".  Therefore this string
4138                    contains plural cases. */
4139                 message = g_strdup_printf (ngettext ("%d found on this page",
4140                                                      "%d found on this page",
4141                                                      results),
4142                                            results);
4143         } else {
4144                 double percent;
4145
4146                 percent = ev_document_find_get_progress
4147                                 (EV_DOCUMENT_FIND (view->document));
4148                 message = g_strdup_printf (_("%3d%% remaining to search"),
4149                                            (int) ((1.0 - percent) * 100));
4150
4151         }
4152         ev_view_set_find_status (view, message);
4153         g_free (message);
4154 }
4155
4156 const char *
4157 ev_view_get_find_status (EvView *view)
4158 {
4159         g_return_val_if_fail (EV_IS_VIEW (view), NULL);
4160
4161         return view->find_status;
4162 }
4163
4164 static void
4165 ev_view_set_find_status (EvView *view, const char *message)
4166 {
4167         g_return_if_fail (EV_IS_VIEW (view));
4168
4169         g_free (view->find_status);
4170         view->find_status = g_strdup (message);
4171         g_object_notify (G_OBJECT (view), "find-status");
4172 }
4173
4174 /*** Find ***/
4175
4176 static void
4177 jump_to_find_result (EvView *view)
4178 {
4179         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
4180         EvRectangle rect;
4181         GdkRectangle view_rect;
4182         int n_results;
4183         int page = view->current_page;
4184
4185         n_results = ev_document_find_get_n_results (find, page);
4186
4187         if (n_results > 0  && view->find_result < n_results) {
4188                 ev_document_find_get_result
4189                         (find, page, view->find_result, &rect);
4190
4191                 doc_rect_to_view_rect (view, page, &rect, &view_rect);
4192                 ensure_rectangle_is_visible (view, &view_rect);
4193         }
4194 }
4195
4196 /**
4197  * jump_to_find_page
4198  * @view: #EvView instance
4199  * @direction: Direction to look
4200  * @shift: Shift from current page
4201  *
4202  * Jumps to the first page that has occurences of searched word.
4203  * Uses a direction where to look and a shift from current page.
4204  *
4205  */
4206 static void
4207 jump_to_find_page (EvView *view, EvViewFindDirection direction, gint shift)
4208 {
4209         int n_pages, i;
4210
4211         n_pages = ev_page_cache_get_n_pages (view->page_cache);
4212
4213         for (i = 0; i < n_pages; i++) {
4214                 int has_results;
4215                 int page;
4216
4217                 if (direction == EV_VIEW_FIND_NEXT)
4218                         page = view->current_page + i;
4219                 else
4220                         page = view->current_page - i;
4221                 page += shift;
4222
4223                 if (page >= n_pages) {
4224                         page = page - n_pages;
4225                 }
4226                 if (page < 0)
4227                         page = page + n_pages;
4228
4229                 has_results = ev_document_find_page_has_results
4230                                 (EV_DOCUMENT_FIND (view->document), page);
4231                 if (has_results == -1) {
4232                         break;
4233                 } else if (has_results == 1) {
4234                         ev_page_cache_set_current_page (view->page_cache, page);
4235                         break;
4236                 }
4237         }
4238 }
4239
4240 gboolean
4241 ev_view_can_find_next (EvView *view)
4242 {
4243         if (EV_IS_DOCUMENT_FIND (view->document)) {
4244                 EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
4245                 int i, n_pages;
4246
4247                 n_pages = ev_page_cache_get_n_pages (view->page_cache);
4248                 for (i = 0; i < n_pages; i++) {
4249                         if (ev_document_find_get_n_results (find, i) > 0) {
4250                                 return TRUE;
4251                         }
4252                 }
4253         }
4254
4255         return FALSE;
4256 }
4257
4258 void
4259 ev_view_find_next (EvView *view)
4260 {
4261         int n_results, n_pages;
4262         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
4263
4264         n_results = ev_document_find_get_n_results (find, view->current_page);
4265
4266         n_pages = ev_page_cache_get_n_pages (view->page_cache);
4267
4268         view->find_result++;
4269
4270         if (view->find_result >= n_results) {
4271
4272                 view->find_result = 0;
4273                 jump_to_find_page (view, EV_VIEW_FIND_NEXT, 1);
4274                 jump_to_find_result (view);
4275         } else {
4276                 jump_to_find_result (view);
4277                 gtk_widget_queue_draw (GTK_WIDGET (view));
4278         }
4279 }
4280
4281 gboolean
4282 ev_view_can_find_previous (EvView *view)
4283 {
4284         if (EV_IS_DOCUMENT_FIND (view->document)) {
4285                 EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
4286                 int i, n_pages;
4287
4288                 n_pages = ev_page_cache_get_n_pages (view->page_cache);
4289                 for (i = n_pages - 1; i >= 0; i--) {
4290                         if (ev_document_find_get_n_results (find, i) > 0) {
4291                                 return TRUE;
4292                         }
4293                 }
4294         }
4295
4296         return FALSE;
4297 }
4298 void
4299 ev_view_find_previous (EvView *view)
4300 {
4301         int n_results, n_pages;
4302         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
4303         EvPageCache *page_cache;
4304
4305         page_cache = ev_page_cache_get (view->document);
4306
4307         n_results = ev_document_find_get_n_results (find, view->current_page);
4308
4309         n_pages = ev_page_cache_get_n_pages (page_cache);
4310
4311         view->find_result--;
4312
4313         if (view->find_result < 0) {
4314
4315                 jump_to_find_page (view, EV_VIEW_FIND_PREV, -1);
4316                 view->find_result = ev_document_find_get_n_results (find, view->current_page) - 1;
4317                 jump_to_find_result (view);
4318         } else {
4319                 jump_to_find_result (view);
4320                 gtk_widget_queue_draw (GTK_WIDGET (view));
4321         }
4322 }
4323
4324 void ev_view_search_changed (EvView *view)
4325 {
4326         /* search string has changed, focus on new search result */
4327         view->jump_to_find_result = TRUE;
4328 }
4329
4330 /*** Selections ***/
4331
4332 /* compute_new_selection_rect/text calculates the area currently selected by
4333  * view_rect.  each handles a different mode;
4334  */
4335 static GList *
4336 compute_new_selection_rect (EvView       *view,
4337                             GdkPoint     *start,
4338                             GdkPoint     *stop)
4339 {
4340         GdkRectangle view_rect;
4341         int n_pages, i;
4342         GList *list = NULL;
4343
4344         g_assert (view->selection_mode == EV_VIEW_SELECTION_RECTANGLE);
4345
4346         view_rect.x = MIN (start->x, stop->x);
4347         view_rect.y = MIN (start->y, stop->y);
4348         view_rect.width = MAX (start->x, stop->x) - view_rect.x;
4349         view_rect.width = MAX (start->y, stop->y) - view_rect.y;
4350
4351         n_pages = ev_page_cache_get_n_pages (view->page_cache);
4352
4353         for (i = 0; i < n_pages; i++) {
4354                 GdkRectangle page_area;
4355                 GtkBorder border;
4356
4357                 if (get_page_extents (view, i, &page_area, &border)) {
4358                         GdkRectangle overlap;
4359
4360                         if (gdk_rectangle_intersect (&page_area, &view_rect, &overlap)) {
4361                                 EvViewSelection *selection;
4362
4363                                 selection = g_new0 (EvViewSelection, 1);
4364                                 selection->page = i;
4365                                 view_rect_to_doc_rect (view, &overlap, &page_area,
4366                                                        &(selection->rect));
4367
4368                                 list = g_list_append (list, selection);
4369                         }
4370                 }
4371         }
4372
4373         return list;
4374 }
4375
4376 static gboolean
4377 gdk_rectangle_point_in (GdkRectangle *rectangle,
4378                         GdkPoint     *point)
4379 {
4380         return rectangle->x <= point->x &&
4381                 rectangle->y <= point->y &&
4382                 point->x < rectangle->x + rectangle->width &&
4383                 point->y < rectangle->y + rectangle->height;
4384 }
4385
4386 static GList *
4387 compute_new_selection_text (EvView   *view,
4388                             GdkPoint *start,
4389                             GdkPoint *stop)
4390 {
4391         int n_pages, i, first, last;
4392         GList *list = NULL;
4393         EvViewSelection *selection;
4394         gint width, height;
4395         int start_page, end_page;
4396
4397         g_assert (view->selection_mode == EV_VIEW_SELECTION_TEXT);
4398
4399         n_pages = ev_page_cache_get_n_pages (view->page_cache);
4400
4401         /* First figure out the range of pages the selection
4402          * affects. */
4403         first = n_pages;
4404         last = 0;
4405         if (view->continuous) {
4406                 start_page = 0;
4407                 end_page = n_pages;
4408         } else if (view->dual_page) {
4409                 start_page = view->start_page;
4410                 end_page = view->end_page + 1;
4411         } else {
4412                 start_page = view->current_page;
4413                 end_page = view->current_page + 1;
4414         }
4415
4416         for (i = start_page; i < end_page; i++) {
4417                 GdkRectangle page_area;
4418                 GtkBorder border;
4419
4420                 get_page_extents (view, i, &page_area, &border);
4421                 if (gdk_rectangle_point_in (&page_area, start) ||
4422                     gdk_rectangle_point_in (&page_area, stop)) {
4423                         if (first == n_pages)
4424                                 first = i;
4425                         last = i;
4426                 }
4427
4428         }
4429
4430
4431
4432         /* Now create a list of EvViewSelection's for the affected
4433          * pages.  This could be an empty list, a list of just one
4434          * page or a number of pages.*/
4435         for (i = first; i < last + 1; i++) {
4436                 GdkRectangle page_area;
4437                 GtkBorder border;
4438                 GdkPoint *point;
4439
4440                 ev_page_cache_get_size (view->page_cache, i,
4441                                         view->rotation,
4442                                         1.0, &width, &height);
4443
4444                 selection = g_new0 (EvViewSelection, 1);
4445                 selection->page = i;
4446                 selection->rect.x1 = selection->rect.y1 = 0;
4447                 selection->rect.x2 = width;
4448                 selection->rect.y2 = height;
4449
4450                 get_page_extents (view, i, &page_area, &border);
4451
4452                 if (gdk_rectangle_point_in (&page_area, start))
4453                         point = start;
4454                 else
4455                         point = stop;
4456
4457                 if (i == first)
4458                         view_point_to_doc_point (view, point, &page_area,
4459                                                  &selection->rect.x1,
4460                                                  &selection->rect.y1);
4461
4462                 /* If the selection is contained within just one page,
4463                  * make sure we don't write 'start' into both points
4464                  * in selection->rect. */
4465                 if (first == last)
4466                         point = stop;
4467
4468                 if (i == last)
4469                         view_point_to_doc_point (view, point, &page_area,
4470                                                  &selection->rect.x2,
4471                                                  &selection->rect.y2);
4472
4473                 list = g_list_append (list, selection);
4474         }
4475
4476         return list;
4477 }
4478
4479 /* This function takes the newly calculated list, and figures out which regions
4480  * have changed.  It then queues a redraw approporiately.
4481  */
4482 static void
4483 merge_selection_region (EvView *view,
4484                         GList  *new_list)
4485 {
4486         GList *old_list;
4487         GList *new_list_ptr, *old_list_ptr;
4488
4489         /* Update the selection */
4490         old_list = ev_pixbuf_cache_get_selection_list (view->pixbuf_cache);
4491         g_list_foreach (view->selection_info.selections, (GFunc)selection_free, NULL);
4492         view->selection_info.selections = new_list;
4493         ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, new_list);
4494         g_object_notify (G_OBJECT (view), "has-selection");
4495
4496         new_list_ptr = new_list;
4497         old_list_ptr = old_list;
4498
4499         while (new_list_ptr || old_list_ptr) {
4500                 EvViewSelection *old_sel, *new_sel;
4501                 int cur_page;
4502                 GdkRegion *region = NULL;
4503
4504                 new_sel = (new_list_ptr) ? (new_list_ptr->data) : NULL;
4505                 old_sel = (old_list_ptr) ? (old_list_ptr->data) : NULL;
4506
4507                 /* Assume that the lists are in order, and we run through them
4508                  * comparing them, one page at a time.  We come out with the
4509                  * first page we see. */
4510                 if (new_sel && old_sel) {
4511                         if (new_sel->page < old_sel->page) {
4512                                 new_list_ptr = new_list_ptr->next;
4513                                 old_sel = NULL;
4514                         } else if (new_sel->page > old_sel->page) {
4515                                 old_list_ptr = old_list_ptr->next;
4516                                 new_sel = NULL;
4517                         } else {
4518                                 new_list_ptr = new_list_ptr->next;
4519                                 old_list_ptr = old_list_ptr->next;
4520                         }
4521                 } else if (new_sel) {
4522                         new_list_ptr = new_list_ptr->next;
4523                 } else if (old_sel) {
4524                         old_list_ptr = old_list_ptr->next;
4525                 }
4526
4527                 g_assert (new_sel || old_sel);
4528
4529                 /* is the page we're looking at on the screen?*/
4530                 cur_page = new_sel ? new_sel->page : old_sel->page;
4531                 if (cur_page < view->start_page || cur_page > view->end_page)
4532                         continue;
4533
4534                 /* seed the cache with a new page.  We are going to need the new
4535                  * region too. */
4536                 if (new_sel) {
4537                         GdkRegion *tmp_region = NULL;
4538                         ev_pixbuf_cache_get_selection_pixbuf (view->pixbuf_cache,
4539                                                               cur_page,
4540                                                               view->scale,
4541                                                               &tmp_region);
4542                         if (tmp_region) {
4543                                 new_sel->covered_region = gdk_region_copy (tmp_region);
4544                         }
4545                 }
4546
4547                 /* Now we figure out what needs redrawing */
4548                 if (old_sel && new_sel) {
4549                         if (old_sel->covered_region &&
4550                             new_sel->covered_region) {
4551                                 /* We only want to redraw the areas that have
4552                                  * changed, so we xor the old and new regions
4553                                  * and redraw if it's different */
4554                                 region = gdk_region_copy (old_sel->covered_region);
4555                                 gdk_region_xor (region, new_sel->covered_region);
4556                                 if (gdk_region_empty (region)) {
4557                                         gdk_region_destroy (region);
4558                                         region = NULL;
4559                                 }
4560                         } else if (old_sel->covered_region) {
4561                                 region = gdk_region_copy (old_sel->covered_region);
4562                         } else if (new_sel->covered_region) {
4563                                 region = gdk_region_copy (new_sel->covered_region);
4564                         }
4565                 } else if (old_sel && !new_sel) {
4566                         if (old_sel->covered_region && !gdk_region_empty (old_sel->covered_region)) {
4567                                 region = gdk_region_copy (old_sel->covered_region);
4568                         }
4569                 } else if (!old_sel && new_sel) {
4570                         if (new_sel->covered_region && !gdk_region_empty (new_sel->covered_region)) {
4571                                 region = gdk_region_copy (new_sel->covered_region);
4572                         }
4573                 } else {
4574                         g_assert_not_reached ();
4575                 }
4576
4577                 /* Redraw the damaged region! */
4578                 if (region) {
4579                         GdkRectangle page_area;
4580                         GtkBorder border;
4581
4582                         get_page_extents (view, cur_page, &page_area, &border);
4583                         gdk_region_offset (region,
4584                                            page_area.x + border.left - view->scroll_x,
4585                                            page_area.y + border.top - view->scroll_y);
4586                         gdk_window_invalidate_region (GTK_WIDGET (view)->window, region, TRUE);
4587                         gdk_region_destroy (region);
4588                 }
4589         }
4590
4591         /* Free the old list, now that we're done with it. */
4592         g_list_foreach (old_list, (GFunc) selection_free, NULL);
4593 }
4594
4595 static void
4596 compute_selections (EvView   *view,
4597                     GdkPoint *start,
4598                     GdkPoint *stop)
4599 {
4600         GList *list;
4601
4602         if (view->selection_mode == EV_VIEW_SELECTION_RECTANGLE)
4603                 list = compute_new_selection_rect (view, start, stop);
4604         else
4605                 list = compute_new_selection_text (view, start, stop);
4606         merge_selection_region (view, list);
4607 }
4608
4609 /* Free's the selection.  It's up to the caller to queue redraws if needed.
4610  */
4611 static void
4612 selection_free (EvViewSelection *selection)
4613 {
4614         if (selection->covered_region)
4615                 gdk_region_destroy (selection->covered_region);
4616         g_free (selection);
4617 }
4618
4619 static void
4620 clear_selection (EvView *view)
4621 {
4622         g_list_foreach (view->selection_info.selections, (GFunc)selection_free, NULL);
4623         view->selection_info.selections = NULL;
4624         view->selection_info.in_selection = FALSE;
4625         if (view->pixbuf_cache)
4626                 ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, NULL);
4627         g_object_notify (G_OBJECT (view), "has-selection");
4628 }
4629
4630
4631 void
4632 ev_view_select_all (EvView *view)
4633 {
4634         int n_pages, i;
4635
4636         /* Disable selection on rotated pages for the 0.4.0 series */
4637         if (view->rotation != 0)
4638                 return;
4639
4640         clear_selection (view);
4641
4642         n_pages = ev_page_cache_get_n_pages (view->page_cache);
4643         for (i = 0; i < n_pages; i++) {
4644                 int width, height;
4645                 EvViewSelection *selection;
4646
4647                 ev_page_cache_get_size (view->page_cache,
4648                                         i,
4649                                         view->rotation,
4650                                         1.0, &width, &height);
4651
4652                 selection = g_new0 (EvViewSelection, 1);
4653                 selection->page = i;
4654                 selection->rect.x1 = selection->rect.y1 = 0;
4655                 selection->rect.x2 = width;
4656                 selection->rect.y2 = height;
4657
4658                 view->selection_info.selections = g_list_append (view->selection_info.selections, selection);
4659         }
4660
4661         ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, view->selection_info.selections);
4662         g_object_notify (G_OBJECT (view), "has-selection");
4663         gtk_widget_queue_draw (GTK_WIDGET (view));
4664 }
4665
4666 gboolean
4667 ev_view_get_has_selection (EvView *view)
4668 {
4669         return view->selection_info.selections != NULL;
4670 }
4671
4672 static char *
4673 get_selected_text (EvView *ev_view)
4674 {
4675         GString *text;
4676         GList *l;
4677         gchar *normalized_text;
4678
4679         text = g_string_new (NULL);
4680
4681         ev_document_doc_mutex_lock ();
4682
4683         for (l = ev_view->selection_info.selections; l != NULL; l = l->next) {
4684                 EvViewSelection *selection = (EvViewSelection *)l->data;
4685                 char *tmp;
4686
4687                 tmp = ev_document_get_text (ev_view->document,
4688                                             selection->page,
4689                                             &selection->rect);
4690                 g_string_append (text, tmp);
4691                 g_free (tmp);
4692         }
4693
4694         ev_document_doc_mutex_unlock ();
4695
4696         normalized_text = g_utf8_normalize (text->str, text->len, G_NORMALIZE_NFKC);
4697         g_string_free (text, TRUE);
4698         return normalized_text;
4699 }
4700
4701 void
4702 ev_view_copy (EvView *ev_view)
4703 {
4704         GtkClipboard *clipboard;
4705         char *text;
4706
4707         if (!ev_document_can_get_text (ev_view->document)) {
4708                 return;
4709         }
4710
4711         text = get_selected_text (ev_view);
4712         clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view),
4713                                               GDK_SELECTION_CLIPBOARD);
4714         gtk_clipboard_set_text (clipboard, text, -1);
4715         g_free (text);
4716 }
4717
4718 static void
4719 ev_view_primary_get_cb (GtkClipboard     *clipboard,
4720                         GtkSelectionData *selection_data,
4721                         guint             info,
4722                         gpointer          data)
4723 {
4724         EvView *ev_view = EV_VIEW (data);
4725         char *text;
4726
4727         if (!ev_document_can_get_text (ev_view->document)) {
4728                 return;
4729         }
4730
4731         text = get_selected_text (ev_view);
4732         gtk_selection_data_set_text (selection_data, text, -1);
4733         g_free (text);
4734 }
4735
4736 static void
4737 ev_view_primary_clear_cb (GtkClipboard *clipboard,
4738                           gpointer      data)
4739 {
4740         EvView *view = EV_VIEW (data);
4741
4742         clear_selection (view);
4743 }
4744
4745 static void
4746 ev_view_update_primary_selection (EvView *ev_view)
4747 {
4748         GtkClipboard *clipboard;
4749
4750         clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view),
4751                                               GDK_SELECTION_PRIMARY);
4752
4753         if (ev_view->selection_info.selections) {
4754                 if (!gtk_clipboard_set_with_owner (clipboard,
4755                                                    clipboard_targets,
4756                                                    G_N_ELEMENTS (clipboard_targets),
4757                                                    ev_view_primary_get_cb,
4758                                                    ev_view_primary_clear_cb,
4759                                                    G_OBJECT (ev_view)))
4760                         ev_view_primary_clear_cb (clipboard, ev_view);
4761         } else {
4762                 if (gtk_clipboard_get_owner (clipboard) == G_OBJECT (ev_view))
4763                         gtk_clipboard_clear (clipboard);
4764         }
4765 }
4766
4767 /*** Cursor operations ***/
4768
4769 static GdkCursor *
4770 ev_view_create_invisible_cursor(void)
4771 {
4772        GdkBitmap *empty;
4773        GdkColor black = { 0, 0, 0, 0 };
4774        static char bits[] = { 0x00 };
4775
4776        empty = gdk_bitmap_create_from_data (NULL, bits, 1, 1);
4777
4778        return gdk_cursor_new_from_pixmap (empty, empty, &black, &black, 0, 0);
4779 }
4780
4781 static void
4782 ev_view_set_cursor (EvView *view, EvViewCursor new_cursor)
4783 {
4784         GdkCursor *cursor = NULL;
4785         GdkDisplay *display;
4786         GtkWidget *widget;
4787
4788         if (view->cursor == new_cursor) {
4789                 return;
4790         }
4791
4792         widget = gtk_widget_get_toplevel (GTK_WIDGET (view));
4793         display = gtk_widget_get_display (widget);
4794         view->cursor = new_cursor;
4795
4796         switch (new_cursor) {
4797                 case EV_VIEW_CURSOR_NORMAL:
4798                         gdk_window_set_cursor (widget->window, NULL);
4799                         break;
4800                 case EV_VIEW_CURSOR_IBEAM:
4801                         cursor = gdk_cursor_new_for_display (display, GDK_XTERM);
4802                         break;
4803                 case EV_VIEW_CURSOR_LINK:
4804                         cursor = gdk_cursor_new_for_display (display, GDK_HAND2);
4805                         break;
4806                 case EV_VIEW_CURSOR_WAIT:
4807                         cursor = gdk_cursor_new_for_display (display, GDK_WATCH);
4808                         break;
4809                 case EV_VIEW_CURSOR_HIDDEN:
4810                         cursor = ev_view_create_invisible_cursor ();
4811                         break;
4812                 case EV_VIEW_CURSOR_DRAG:
4813                         cursor = gdk_cursor_new_for_display (display, GDK_FLEUR);
4814                         break;
4815         }
4816
4817         if (cursor) {
4818                 gdk_window_set_cursor (widget->window, cursor);
4819                 gdk_cursor_unref (cursor);
4820                 gdk_flush();
4821         }
4822 }
4823
4824 void
4825 ev_view_hide_cursor (EvView *view)
4826 {
4827        ev_view_set_cursor (view, EV_VIEW_CURSOR_HIDDEN);
4828 }
4829
4830 void
4831 ev_view_show_cursor (EvView *view)
4832 {
4833        ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
4834 }
4835
4836 static void
4837 ev_view_reset_presentation_state (EvView *view)
4838 {
4839         if (!view->presentation ||
4840             view->presentation_state == EV_PRESENTATION_NORMAL)
4841                 return;
4842
4843         view->presentation_state = EV_PRESENTATION_NORMAL;
4844         gdk_window_set_background (GTK_WIDGET (view)->window,
4845                                    &GTK_WIDGET (view)->style->black);
4846         gtk_widget_queue_draw (GTK_WIDGET (view));
4847 }
4848
4849 gboolean
4850 ev_view_next_page (EvView *view)
4851 {
4852         int page, n_pages;
4853
4854         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
4855
4856         if (!view->page_cache)
4857                 return FALSE;
4858
4859         ev_view_presentation_transition_stop (view);
4860         ev_view_reset_presentation_state (view);
4861
4862         page = ev_page_cache_get_current_page (view->page_cache);
4863         n_pages = ev_page_cache_get_n_pages (view->page_cache);
4864
4865         if (view->dual_page && !view->presentation)
4866                 page = page + 2;
4867         else
4868                 page = page + 1;
4869
4870         if (page < n_pages) {
4871                 ev_page_cache_set_current_page (view->page_cache, page);
4872                 return TRUE;
4873         } else if (view->presentation && page == n_pages) {
4874                 view->presentation_state = EV_PRESENTATION_END;
4875                 gtk_widget_queue_draw (GTK_WIDGET (view));
4876                 return TRUE;
4877         } else if (view->dual_page && page == n_pages) {
4878                 ev_page_cache_set_current_page (view->page_cache, page - 1);
4879                 return TRUE;
4880         } else {
4881                 return FALSE;
4882         }
4883 }
4884
4885 gboolean
4886 ev_view_previous_page (EvView *view)
4887 {
4888         int page;
4889
4890         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
4891
4892         if (!view->page_cache)
4893                 return FALSE;
4894
4895         if (view->presentation &&
4896             view->presentation_state == EV_PRESENTATION_END) {
4897                 ev_view_reset_presentation_state (view);
4898                 return TRUE;
4899         }
4900
4901         ev_view_reset_presentation_state (view);
4902
4903         page = ev_page_cache_get_current_page (view->page_cache);
4904
4905         if (view->dual_page && !view->presentation)
4906                 page = page - 2;
4907         else
4908                 page = page - 1;
4909
4910         if (page >= 0) {
4911                 ev_page_cache_set_current_page (view->page_cache, page);
4912                 return TRUE;
4913         } else if (ev_view_get_dual_page (view) && page == -1) {
4914                 ev_page_cache_set_current_page (view->page_cache, 0);
4915                 return TRUE;
4916         } else {
4917                 return FALSE;
4918         }
4919 }
4920
4921 /*** Enum description for usage in signal ***/
4922
4923 GType
4924 ev_sizing_mode_get_type (void)
4925 {
4926   static GType etype = 0;
4927   if (etype == 0) {
4928     static const GEnumValue values[] = {
4929       { EV_SIZING_FIT_WIDTH, "EV_SIZING_FIT_WIDTH", "fit-width" },
4930       { EV_SIZING_BEST_FIT, "EV_SIZING_BEST_FIT", "best-fit" },
4931       { EV_SIZING_FREE, "EV_SIZING_FREE", "free" },
4932       { 0, NULL, NULL }
4933     };
4934     etype = g_enum_register_static ("EvSizingMode", values);
4935   }
4936   return etype;
4937 }
4938
4939 GType
4940 ev_scroll_type_get_type (void)
4941 {
4942   static GType etype = 0;
4943   if (etype == 0) {
4944     static const GEnumValue values[] = {
4945       { EV_SCROLL_PAGE_FORWARD, "EV_SCROLL_PAGE_FORWARD", "scroll-page-forward" },
4946       { EV_SCROLL_PAGE_BACKWARD, "EV_SCROLL_PAGE_BACKWARD", "scroll-page-backward" },
4947       { EV_SCROLL_STEP_FORWARD, "EV_SCROLL_STEP_FORWARD", "scroll-step-forward" },
4948       { EV_SCROLL_STEP_FORWARD, "EV_SCROLL_STEP_FORWARD", "scroll-step-forward" },
4949       { EV_SCROLL_STEP_UP, "EV_SCROLL_STEP_UP", "scroll-step-up" },
4950       { EV_SCROLL_STEP_DOWN, "EV_SCROLL_STEP_DOWN", "scroll-step-down" },
4951       { 0, NULL, NULL }
4952     };
4953     etype = g_enum_register_static ("EvScrollType", values);
4954   }
4955   return etype;
4956 }