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         type = ev_link_action_get_action_type (action);
1352
1353         switch (type) {
1354                 case EV_LINK_ACTION_TYPE_GOTO_DEST: {
1355                         EvLinkDest *dest;
1356
1357                         g_signal_emit (view, signals[SIGNAL_HANDLE_LINK], 0, link);
1358
1359                         dest = ev_link_action_get_dest (action);
1360                         ev_view_goto_dest (view, dest);
1361                 }
1362                         break;
1363                 case EV_LINK_ACTION_TYPE_GOTO_REMOTE:
1364                 case EV_LINK_ACTION_TYPE_EXTERNAL_URI:
1365                 case EV_LINK_ACTION_TYPE_LAUNCH:
1366                 case EV_LINK_ACTION_TYPE_NAMED:
1367                         g_signal_emit (view, signals[SIGNAL_EXTERNAL_LINK], 0, action);
1368                         break;
1369         }
1370 }
1371
1372 gchar *
1373 ev_view_page_label_from_dest (EvView *view, EvLinkDest *dest)
1374 {
1375         EvLinkDestType type;
1376         gchar *msg = NULL;
1377
1378         type = ev_link_dest_get_dest_type (dest);
1379
1380         switch (type) {
1381                 case EV_LINK_DEST_TYPE_NAMED: {
1382                         EvLinkDest  *dest2;
1383                         const gchar *named_dest;
1384
1385                         named_dest = ev_link_dest_get_named_dest (dest);
1386                         dest2 = ev_document_links_find_link_dest (EV_DOCUMENT_LINKS (view->document),
1387                                                                   named_dest);
1388                         if (dest2) {
1389                                 msg = ev_page_cache_get_page_label (view->page_cache,
1390                                                                     ev_link_dest_get_page (dest2));
1391                                 g_object_unref (dest2);
1392                         }
1393                 }
1394
1395                         break;
1396                 case EV_LINK_DEST_TYPE_PAGE_LABEL: {
1397                         msg = g_strdup (ev_link_dest_get_page_label (dest));
1398                 }
1399                         break;
1400                 default:
1401                         msg = ev_page_cache_get_page_label (view->page_cache,
1402                                                             ev_link_dest_get_page (dest));
1403         }
1404
1405         return msg;
1406 }
1407
1408 static char *
1409 tip_from_action_named (EvLinkAction *action)
1410 {
1411         const gchar *name = ev_link_action_get_name (action);
1412
1413         if (g_ascii_strcasecmp (name, "FirstPage") == 0) {
1414                 return g_strdup (_("Go to first page"));
1415         } else if (g_ascii_strcasecmp (name, "PrevPage") == 0) {
1416                 return g_strdup (_("Go to previous page"));
1417         } else if (g_ascii_strcasecmp (name, "NextPage") == 0) {
1418                 return g_strdup (_("Go to next page"));
1419         } else if (g_ascii_strcasecmp (name, "LastPage") == 0) {
1420                 return g_strdup (_("Go to last page"));
1421         } else if (g_ascii_strcasecmp (name, "GoToPage") == 0) {
1422                 return g_strdup (_("Go to page"));
1423         } else if (g_ascii_strcasecmp (name, "Find") == 0) {
1424                 return g_strdup (_("Find"));
1425         }
1426
1427         return NULL;
1428 }
1429
1430 static char *
1431 tip_from_link (EvView *view, EvLink *link)
1432 {
1433         EvLinkAction *action;
1434         EvLinkActionType type;
1435         char *msg = NULL;
1436         char *page_label;
1437         const char *title;
1438
1439         action = ev_link_get_action (link);
1440         title = ev_link_get_title (link);
1441
1442         if (!action)
1443                 return title ? g_strdup (title) : NULL;
1444
1445         type = ev_link_action_get_action_type (action);
1446
1447         switch (type) {
1448                 case EV_LINK_ACTION_TYPE_GOTO_DEST:
1449                         page_label = ev_view_page_label_from_dest (view,
1450                                                                    ev_link_action_get_dest (action));
1451                         msg = g_strdup_printf (_("Go to page %s"), page_label);
1452                         g_free (page_label);
1453                         break;
1454                 case EV_LINK_ACTION_TYPE_GOTO_REMOTE:
1455                         if (title) {
1456                                 msg = g_strdup_printf (_("Go to %s on file “%s”"), title,
1457                                                        ev_link_action_get_filename (action));
1458                         } else {
1459                                 msg = g_strdup_printf (_("Go to file “%s”"),
1460                                                        ev_link_action_get_filename (action));
1461                         }
1462
1463                         break;
1464                 case EV_LINK_ACTION_TYPE_EXTERNAL_URI:
1465                         msg = g_strdup (ev_link_action_get_uri (action));
1466                         break;
1467                 case EV_LINK_ACTION_TYPE_LAUNCH:
1468                         msg = g_strdup_printf (_("Launch %s"),
1469                                                ev_link_action_get_filename (action));
1470                         break;
1471                 case EV_LINK_ACTION_TYPE_NAMED:
1472                         msg = tip_from_action_named (action);
1473                         break;
1474                 default:
1475                         if (title)
1476                                 msg = g_strdup (title);
1477                         break;
1478         }
1479
1480         return msg;
1481 }
1482
1483 static void
1484 handle_link_over_xy (EvView *view, gint x, gint y)
1485 {
1486         EvLink *link;
1487
1488         link = ev_view_get_link_at_location (view, x, y);
1489
1490         if (view->link_tooltip == NULL) {
1491                 view->link_tooltip = ev_tooltip_new (GTK_WIDGET (view));
1492         }
1493
1494         if (view->hovered_link != link) {
1495                 view->hovered_link = link;
1496                 ev_tooltip_deactivate (EV_TOOLTIP (view->link_tooltip));
1497         }
1498
1499         if (link) {
1500                 char *msg = tip_from_link (view, link);
1501
1502                 if (msg && g_utf8_validate (msg, -1, NULL)) {
1503                         EvTooltip *tooltip = EV_TOOLTIP (view->link_tooltip);
1504
1505                         ev_tooltip_set_position (tooltip, x, y);
1506                         ev_tooltip_set_text (tooltip, msg);
1507                         ev_tooltip_activate (tooltip);
1508                 }
1509                 g_free (msg);
1510
1511                 ev_view_set_cursor (view, EV_VIEW_CURSOR_LINK);
1512         } else if (location_in_text (view, x + view->scroll_x, y + view->scroll_y)) {
1513                 ev_view_set_cursor (view, EV_VIEW_CURSOR_IBEAM);
1514         } else {
1515                 ev_view_set_status (view, NULL);
1516                 if (view->cursor == EV_VIEW_CURSOR_LINK ||
1517                     view->cursor == EV_VIEW_CURSOR_IBEAM)
1518                         ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
1519         }
1520 }
1521
1522 /*** Images ***/
1523 static EvImage *
1524 ev_view_get_image_at_location (EvView  *view,
1525                                gdouble  x,
1526                                gdouble  y)
1527 {
1528         gint page = -1;
1529         gint x_offset = 0, y_offset = 0;
1530         gint x_new = 0, y_new = 0;
1531         GList *image_mapping;
1532
1533         if (!EV_IS_DOCUMENT_IMAGES (view->document))
1534                 return NULL;
1535
1536         x += view->scroll_x;
1537         y += view->scroll_y;
1538
1539         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1540
1541         if (page == -1)
1542                 return NULL;
1543
1544         if (get_doc_point_from_offset (view, page, x_offset,
1545                                        y_offset, &x_new, &y_new) == FALSE)
1546                 return NULL;
1547
1548         image_mapping = ev_pixbuf_cache_get_image_mapping (view->pixbuf_cache, page);
1549
1550         if (image_mapping)
1551                 return ev_image_mapping_find (image_mapping, x_new, y_new);
1552         else
1553                 return NULL;
1554 }
1555
1556 /*** GtkWidget implementation ***/
1557
1558 static void
1559 ev_view_size_request_continuous_dual_page (EvView         *view,
1560                                            GtkRequisition *requisition)
1561 {
1562         int max_width;
1563         gint n_pages;
1564         GtkBorder border;
1565
1566         ev_page_cache_get_max_width (view->page_cache, view->rotation,
1567                                      view->scale, &max_width);
1568         compute_border (view, max_width, max_width, &border);
1569
1570         n_pages = ev_page_cache_get_n_pages (view->page_cache) + 1;
1571
1572         requisition->width = (max_width + border.left + border.right) * 2 + (view->spacing * 3);
1573         get_page_y_offset (view, n_pages, view->scale, &requisition->height);
1574
1575         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
1576                 requisition->width = 1;
1577         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
1578                 requisition->width = 1;
1579                 /* FIXME: This could actually be set on one page docs or docs
1580                  * with a strange aspect ratio. */
1581                 /* requisition->height = 1;*/
1582         }
1583 }
1584
1585 static void
1586 ev_view_size_request_continuous (EvView         *view,
1587                                  GtkRequisition *requisition)
1588 {
1589         int max_width;
1590         int n_pages;
1591         GtkBorder border;
1592
1593
1594         ev_page_cache_get_max_width (view->page_cache, view->rotation,
1595                                      view->scale, &max_width);
1596         n_pages = ev_page_cache_get_n_pages (view->page_cache);
1597         compute_border (view, max_width, max_width, &border);
1598
1599         requisition->width = max_width + (view->spacing * 2) + border.left + border.right;
1600         get_page_y_offset (view, n_pages, view->scale, &requisition->height);
1601
1602         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
1603                 requisition->width = 1;
1604         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
1605                 requisition->width = 1;
1606                 /* FIXME: This could actually be set on one page docs or docs
1607                  * with a strange aspect ratio. */
1608                 /* requisition->height = 1;*/
1609         }
1610 }
1611
1612 static void
1613 ev_view_size_request_dual_page (EvView         *view,
1614                                 GtkRequisition *requisition)
1615 {
1616         GtkBorder border;
1617         gint width, height;
1618
1619         /* Find the largest of the two. */
1620         ev_page_cache_get_size (view->page_cache,
1621                                 view->current_page,
1622                                 view->rotation,
1623                                 view->scale,
1624                                 &width, &height);
1625         if (view->current_page + 1 < ev_page_cache_get_n_pages (view->page_cache)) {
1626                 gint width_2, height_2;
1627                 ev_page_cache_get_size (view->page_cache,
1628                                         view->current_page + 1,
1629                                         view->rotation,
1630                                         view->scale,
1631                                         &width_2, &height_2);
1632                 if (width_2 > width) {
1633                         width = width_2;
1634                         height = height_2;
1635                 }
1636         }
1637         compute_border (view, width, height, &border);
1638
1639         requisition->width = ((width + border.left + border.right) * 2) +
1640                 (view->spacing * 3);
1641         requisition->height = (height + border.top + border.bottom) +
1642                 (view->spacing * 2);
1643
1644         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
1645                 requisition->width = 1;
1646         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
1647                 requisition->width = 1;
1648                 requisition->height = 1;
1649         }
1650 }
1651
1652 static void
1653 ev_view_size_request_single_page (EvView         *view,
1654                                   GtkRequisition *requisition)
1655 {
1656         GtkBorder border;
1657         gint width, height;
1658
1659         ev_page_cache_get_size (view->page_cache,
1660                                 view->current_page,
1661                                 view->rotation,
1662                                 view->scale,
1663                                 &width, &height);
1664         compute_border (view, width, height, &border);
1665
1666         requisition->width = width + border.left + border.right + (2 * view->spacing);
1667         requisition->height = height + border.top + border.bottom + (2 * view->spacing);
1668
1669         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
1670                 requisition->width = 1;
1671                 requisition->height = height + border.top + border.bottom + (2 * view->spacing);
1672         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
1673                 requisition->width = 1;
1674                 requisition->height = 1;
1675         }
1676 }
1677
1678 static void
1679 ev_view_size_request (GtkWidget      *widget,
1680                       GtkRequisition *requisition)
1681 {
1682         EvView *view = EV_VIEW (widget);
1683
1684         if (view->document == NULL) {
1685                 requisition->width = 1;
1686                 requisition->height = 1;
1687                 return;
1688         }
1689
1690         if (view->presentation) {
1691                 requisition->width = 1;
1692                 requisition->height = 1;
1693                 return;
1694         }
1695
1696         if (view->continuous && view->dual_page)
1697                 ev_view_size_request_continuous_dual_page (view, requisition);
1698         else if (view->continuous)
1699                 ev_view_size_request_continuous (view, requisition);
1700         else if (view->dual_page)
1701                 ev_view_size_request_dual_page (view, requisition);
1702         else
1703                 ev_view_size_request_single_page (view, requisition);
1704 }
1705
1706 static void
1707 ev_view_size_allocate (GtkWidget      *widget,
1708                        GtkAllocation  *allocation)
1709 {
1710         EvView *view = EV_VIEW (widget);
1711
1712         GTK_WIDGET_CLASS (ev_view_parent_class)->size_allocate (widget, allocation);
1713
1714         if (view->sizing_mode == EV_SIZING_FIT_WIDTH ||
1715             view->sizing_mode == EV_SIZING_BEST_FIT) {
1716
1717                 g_signal_emit (view, signals[SIGNAL_ZOOM_INVALID], 0);
1718
1719                 ev_view_size_request (widget, &widget->requisition);
1720         }
1721
1722         view_set_adjustment_values (view, GTK_ORIENTATION_HORIZONTAL);
1723         view_set_adjustment_values (view, GTK_ORIENTATION_VERTICAL);
1724
1725         if (view->document)
1726                 view_update_range_and_current_page (view);
1727
1728         view->pending_scroll = SCROLL_TO_KEEP_POSITION;
1729         view->pending_resize = FALSE;
1730 }
1731
1732 static void
1733 ev_view_realize (GtkWidget *widget)
1734 {
1735         EvView *view = EV_VIEW (widget);
1736         GdkWindowAttr attributes;
1737
1738         GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
1739
1740         attributes.window_type = GDK_WINDOW_CHILD;
1741         attributes.wclass = GDK_INPUT_OUTPUT;
1742         attributes.visual = gtk_widget_get_visual (widget);
1743         attributes.colormap = gtk_widget_get_colormap (widget);
1744
1745         attributes.x = widget->allocation.x;
1746         attributes.y = widget->allocation.y;
1747         attributes.width = widget->allocation.width;
1748         attributes.height = widget->allocation.height;
1749         attributes.event_mask = GDK_EXPOSURE_MASK |
1750                                 GDK_BUTTON_PRESS_MASK |
1751                                 GDK_BUTTON_RELEASE_MASK |
1752                                 GDK_SCROLL_MASK |
1753                                 GDK_KEY_PRESS_MASK |
1754                                 GDK_POINTER_MOTION_MASK |
1755                                 GDK_POINTER_MOTION_HINT_MASK |
1756                                 GDK_ENTER_NOTIFY_MASK |
1757                                 GDK_LEAVE_NOTIFY_MASK;
1758
1759         widget->window = gdk_window_new (gtk_widget_get_parent_window (widget),
1760                                          &attributes,
1761                                          GDK_WA_X | GDK_WA_Y |
1762                                          GDK_WA_COLORMAP |
1763                                          GDK_WA_VISUAL);
1764         gdk_window_set_user_data (widget->window, widget);
1765         widget->style = gtk_style_attach (widget->style, widget->window);
1766
1767         if (view->presentation)
1768                 gdk_window_set_background (widget->window, &widget->style->black);
1769         else
1770                 gdk_window_set_background (widget->window, &widget->style->mid [GTK_STATE_NORMAL]);
1771 }
1772
1773 static gboolean
1774 ev_view_scroll_event (GtkWidget *widget, GdkEventScroll *event)
1775 {
1776         EvView *view = EV_VIEW (widget);
1777         guint state;
1778
1779         state = event->state & gtk_accelerator_get_default_mod_mask ();
1780
1781         if (state == GDK_CONTROL_MASK && view->presentation == FALSE) {
1782                 ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1783
1784                 if (event->direction == GDK_SCROLL_UP ||
1785                     event->direction == GDK_SCROLL_LEFT) {
1786                         if (ev_view_can_zoom_in (view)) {
1787                                 ev_view_zoom_in (view);
1788                         }
1789                 } else {
1790                         if (ev_view_can_zoom_out (view)) {
1791                                 ev_view_zoom_out (view);
1792                         }
1793                 }
1794
1795                 return TRUE;
1796         }
1797
1798         view->jump_to_find_result = FALSE;
1799         /* Shift+Wheel scrolls the in the perpendicular direction */
1800         if (state & GDK_SHIFT_MASK) {
1801                 if (event->direction == GDK_SCROLL_UP)
1802                         event->direction = GDK_SCROLL_LEFT;
1803                 if (event->direction == GDK_SCROLL_LEFT)
1804                         event->direction = GDK_SCROLL_UP;
1805                 if (event->direction == GDK_SCROLL_DOWN)
1806                         event->direction = GDK_SCROLL_RIGHT;
1807                 if (event->direction == GDK_SCROLL_RIGHT)
1808                         event->direction = GDK_SCROLL_DOWN;
1809
1810                 event->state &= ~GDK_SHIFT_MASK;
1811                 state &= ~GDK_SHIFT_MASK;
1812         }
1813
1814         if (state == 0 && view->presentation) {
1815                 switch (event->direction) {
1816                         case GDK_SCROLL_DOWN:
1817                         case GDK_SCROLL_RIGHT:
1818                                 ev_view_next_page (view);
1819                                 break;
1820                         case GDK_SCROLL_UP:
1821                         case GDK_SCROLL_LEFT:
1822                                 ev_view_previous_page (view);
1823                                 break;
1824                 }
1825
1826                 return TRUE;
1827         }
1828
1829         return FALSE;
1830 }
1831
1832 static EvViewSelection *
1833 find_selection_for_page (EvView *view,
1834                          gint    page)
1835 {
1836         GList *list;
1837
1838         for (list = view->selection_info.selections; list != NULL; list = list->next) {
1839                 EvViewSelection *selection;
1840
1841                 selection = (EvViewSelection *) list->data;
1842
1843                 if (selection->page == page)
1844                         return selection;
1845         }
1846
1847         return NULL;
1848 }
1849
1850 static void
1851 draw_end_presentation_page (EvView       *view,
1852                             GdkRectangle *page_area)
1853 {
1854         PangoLayout *layout;
1855         PangoFontDescription *font_desc;
1856         gchar *markup;
1857         const gchar *text = _("End of presentation. Press Escape to exit.");
1858
1859         if (view->presentation_state != EV_PRESENTATION_END)
1860                 return;
1861
1862         layout = gtk_widget_create_pango_layout (GTK_WIDGET (view), NULL);
1863         markup = g_strdup_printf ("<span foreground=\"white\">%s</span>", text);
1864         pango_layout_set_markup (layout, markup, -1);
1865         g_free (markup);
1866
1867         font_desc = pango_font_description_new ();
1868         pango_font_description_set_size (font_desc, 16 * PANGO_SCALE);
1869         pango_layout_set_font_description (layout, font_desc);
1870
1871         gtk_paint_layout (GTK_WIDGET (view)->style,
1872                           GTK_WIDGET (view)->window,
1873                           GTK_WIDGET_STATE (view),
1874                           FALSE,
1875                           page_area,
1876                           GTK_WIDGET (view),
1877                           NULL,
1878                           page_area->x + 15,
1879                           page_area->y + 15,
1880                           layout);
1881
1882         pango_font_description_free (font_desc);
1883         g_object_unref (layout);
1884 }
1885
1886 static gboolean
1887 ev_view_expose_event (GtkWidget      *widget,
1888                       GdkEventExpose *event)
1889 {
1890         EvView *view = EV_VIEW (widget);
1891         int i;
1892
1893         if (view->presentation) {
1894                 switch (view->presentation_state) {
1895                         case EV_PRESENTATION_END: {
1896                                 GdkRectangle area = {0};
1897
1898                                 area.width = widget->allocation.width;
1899                                 area.height = widget->allocation.height;
1900
1901                                 draw_end_presentation_page (view, &area);
1902                         }
1903                                 return FALSE;
1904                         case EV_PRESENTATION_BLACK:
1905                         case EV_PRESENTATION_WHITE:
1906                                 return FALSE;
1907                         case EV_PRESENTATION_NORMAL:
1908                         default:
1909                                 break;
1910                 }
1911         } else if (view->loading) {
1912                 GdkRectangle area = {0};
1913
1914                 area.width = widget->allocation.width;
1915                 area.height = widget->allocation.height;
1916
1917                 draw_loading_text (view,
1918                                    &area,
1919                                    &(event->area));
1920         }
1921
1922         if (view->document == NULL)
1923                 return FALSE;
1924
1925         for (i = view->start_page; i <= view->end_page; i++) {
1926                 GdkRectangle page_area;
1927                 GtkBorder border;
1928                 gboolean page_ready = TRUE;
1929
1930                 if (!get_page_extents (view, i, &page_area, &border))
1931                         continue;
1932
1933                 page_area.x -= view->scroll_x;
1934                 page_area.y -= view->scroll_y;
1935
1936                 draw_one_page (view, i, &page_area, &border, &(event->area), &page_ready);
1937
1938                 if (page_ready && EV_IS_DOCUMENT_FIND (view->document))
1939                         highlight_find_results (view, i);
1940         }
1941
1942         return FALSE;
1943 }
1944
1945 static gboolean
1946 ev_view_do_popup_menu (EvView *view,
1947                        gdouble x,
1948                        gdouble y)
1949 {
1950         EvLink  *link;
1951         EvImage *image;
1952
1953         image = ev_view_get_image_at_location (view, x, y);
1954         if (image) {
1955                 g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, image);
1956                 return TRUE;
1957         }
1958
1959         link = ev_view_get_link_at_location (view, x, y);
1960         if (link) {
1961                 g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, link);
1962                 return TRUE;
1963         }
1964
1965         g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, NULL);
1966
1967         return TRUE;
1968 }
1969
1970 static gboolean
1971 ev_view_popup_menu (GtkWidget *widget)
1972 {
1973         gint x, y;
1974
1975         gtk_widget_get_pointer (widget, &x, &y);
1976         return ev_view_do_popup_menu (EV_VIEW (widget), x, y);
1977 }
1978
1979 static gboolean
1980 ev_view_button_press_event (GtkWidget      *widget,
1981                             GdkEventButton *event)
1982 {
1983         EvView *view = EV_VIEW (widget);
1984
1985         if (!view->document)
1986                 return FALSE;
1987
1988         if (!GTK_WIDGET_HAS_FOCUS (widget)) {
1989                 gtk_widget_grab_focus (widget);
1990         }
1991
1992         view->pressed_button = event->button;
1993         view->selection_info.in_drag = FALSE;
1994
1995         switch (event->button) {
1996                 case 1: {
1997                         EvImage *image;
1998
1999                         if (view->selection_info.selections) {
2000                                 if (location_in_selected_text (view,
2001                                                                event->x + view->scroll_x,
2002                                                                event->y + view->scroll_y)) {
2003                                         view->selection_info.in_drag = TRUE;
2004                                 } else {
2005                                         clear_selection (view);
2006
2007                                         view->selection_info.start.x = event->x + view->scroll_x;
2008                                         view->selection_info.start.y = event->y + view->scroll_y;
2009                                 }
2010
2011                                 gtk_widget_queue_draw (widget);
2012                         } else if (!location_in_text (view, event->x + view->scroll_x, event->y + view->scroll_y) &&
2013                                    (image = ev_view_get_image_at_location (view, event->x, event->y))) {
2014                                 if (view->image_dnd_info.image)
2015                                         g_object_unref (view->image_dnd_info.image);
2016                                 view->image_dnd_info.image = g_object_ref (image);
2017                                 view->image_dnd_info.in_drag = TRUE;
2018
2019                                 view->image_dnd_info.start.x = event->x + view->scroll_x;
2020                                 view->image_dnd_info.start.y = event->y + view->scroll_y;
2021                         } else {
2022                                 view->selection_info.start.x = event->x + view->scroll_x;
2023                                 view->selection_info.start.y = event->y + view->scroll_y;
2024                         }
2025                 }
2026                         return TRUE;
2027                 case 2:
2028                         /* use root coordinates as reference point because
2029                          * scrolling changes window relative coordinates */
2030                         view->drag_info.start.x = event->x_root;
2031                         view->drag_info.start.y = event->y_root;
2032                         view->drag_info.hadj = gtk_adjustment_get_value (view->hadjustment);
2033                         view->drag_info.vadj = gtk_adjustment_get_value (view->vadjustment);
2034
2035                         ev_view_set_cursor (view, EV_VIEW_CURSOR_DRAG);
2036
2037                         return TRUE;
2038                 case 3:
2039                         return ev_view_do_popup_menu (view, event->x, event->y);
2040         }
2041
2042         return FALSE;
2043 }
2044
2045 /*** Drag and Drop ***/
2046 static void
2047 ev_view_drag_data_get (GtkWidget        *widget,
2048                        GdkDragContext   *context,
2049                        GtkSelectionData *selection_data,
2050                        guint             info,
2051                        guint             time)
2052 {
2053         EvView *view = EV_VIEW (widget);
2054
2055         switch (info) {
2056                 case TARGET_DND_TEXT:
2057                         if (view->selection_info.selections &&
2058                             ev_document_can_get_text (view->document)) {
2059                                 gchar *text;
2060
2061                                 text = get_selected_text (view);
2062
2063                                 gtk_selection_data_set_text (selection_data,
2064                                                              text,
2065                                                              strlen (text));
2066
2067                                 g_free (text);
2068                         }
2069                         break;
2070                 case TARGET_DND_IMAGE:
2071                         if (view->image_dnd_info.image) {
2072                                 GdkPixbuf *pixbuf;
2073
2074                                 pixbuf = ev_image_get_pixbuf (view->image_dnd_info.image);
2075                                 gtk_selection_data_set_pixbuf (selection_data, pixbuf);
2076                         }
2077                         break;
2078                 case TARGET_DND_URI:
2079                         if (view->image_dnd_info.image) {
2080                                 const gchar *tmp_uri;
2081                                 gchar      **uris;
2082
2083                                 tmp_uri = ev_image_save_tmp (view->image_dnd_info.image);
2084
2085                                 uris = g_new0 (gchar *, 2);
2086                                 uris[0] = (gchar *)tmp_uri;
2087
2088                                 gtk_selection_data_set_uris (selection_data, uris);
2089
2090                                 /* g_free instead of g_strfreev since tmp_uri is const */
2091                                 g_free (uris);
2092                         }
2093         }
2094 }
2095
2096 static gboolean
2097 ev_view_drag_motion (GtkWidget      *widget,
2098                      GdkDragContext *context,
2099                      gint            x,
2100                      gint            y,
2101                      guint           time)
2102 {
2103         if (gtk_drag_get_source_widget (context) == widget)
2104                 gdk_drag_status (context, 0, time);
2105         else
2106                 gdk_drag_status (context, context->suggested_action, time);
2107
2108         return TRUE;
2109 }
2110
2111 static void
2112 ev_view_drag_data_received (GtkWidget          *widget,
2113                             GdkDragContext     *context,
2114                             gint                x,
2115                             gint                y,
2116                             GtkSelectionData   *selection_data,
2117                             guint               info,
2118                             guint               time)
2119 {
2120         gchar  **uris;
2121         gint     i = 0;
2122         GSList  *uri_list = NULL;
2123
2124         uris = gtk_selection_data_get_uris (selection_data);
2125         if (!uris) {
2126                 gtk_drag_finish (context, FALSE, FALSE, time);
2127                 return;
2128         }
2129
2130         for (i = 0; uris[i]; i++) {
2131                 uri_list = g_slist_prepend (uri_list, (gpointer) uris[i]);
2132         }
2133
2134         ev_application_open_uri_list (EV_APP, uri_list,
2135                                       gtk_widget_get_screen (widget),
2136                                       0);
2137         gtk_drag_finish (context, TRUE, FALSE, time);
2138
2139         g_strfreev (uris);
2140         g_slist_free (uri_list);
2141 }
2142
2143
2144 static gboolean
2145 selection_update_idle_cb (EvView *view)
2146 {
2147         compute_selections (view, &view->selection_info.start, &view->motion);
2148         view->selection_update_id = 0;
2149         return FALSE;
2150 }
2151
2152 static gboolean
2153 selection_scroll_timeout_cb (EvView *view)
2154 {
2155         gint x, y, shift = 0;
2156         GtkWidget *widget = GTK_WIDGET (view);
2157
2158         gtk_widget_get_pointer (widget, &x, &y);
2159
2160         if (y > widget->allocation.height) {
2161                 shift = (y - widget->allocation.height) / 2;
2162         } else if (y < 0) {
2163                 shift = y / 2;
2164         }
2165
2166         if (shift)
2167                 gtk_adjustment_set_value (view->vadjustment,
2168                                           CLAMP (view->vadjustment->value + shift,
2169                                           view->vadjustment->lower,
2170                                           view->vadjustment->upper -
2171                                           view->vadjustment->page_size));
2172
2173         if (x > widget->allocation.width) {
2174                 shift = (x - widget->allocation.width) / 2;
2175         } else if (x < 0) {
2176                 shift = x / 2;
2177         }
2178
2179         if (shift)
2180                 gtk_adjustment_set_value (view->hadjustment,
2181                                           CLAMP (view->hadjustment->value + shift,
2182                                           view->hadjustment->lower,
2183                                           view->hadjustment->upper -
2184                                           view->hadjustment->page_size));
2185
2186         return TRUE;
2187 }
2188
2189 static gboolean
2190 ev_view_motion_notify_event (GtkWidget      *widget,
2191                              GdkEventMotion *event)
2192 {
2193         EvView *view = EV_VIEW (widget);
2194         gint x, y;
2195
2196         if (!view->document)
2197                 return FALSE;
2198
2199         if (event->is_hint || event->window != widget->window) {
2200             gtk_widget_get_pointer (widget, &x, &y);
2201         } else {
2202             x = event->x;
2203             y = event->y;
2204         }
2205
2206         if (view->selection_info.in_drag) {
2207                 if (gtk_drag_check_threshold (widget,
2208                                               view->selection_info.start.x,
2209                                               view->selection_info.start.y,
2210                                               x, y)) {
2211                         GtkTargetList *target_list = gtk_target_list_new (NULL, 0);
2212
2213                         gtk_target_list_add_text_targets (target_list, TARGET_DND_TEXT);
2214
2215                         gtk_drag_begin (widget, target_list,
2216                                         GDK_ACTION_COPY,
2217                                         1, (GdkEvent *)event);
2218
2219                         view->selection_info.in_drag = FALSE;
2220
2221                         gtk_target_list_unref (target_list);
2222
2223                         return TRUE;
2224                 }
2225         } else if (view->image_dnd_info.in_drag) {
2226                 if (gtk_drag_check_threshold (widget,
2227                                               view->selection_info.start.x,
2228                                               view->selection_info.start.y,
2229                                               x, y)) {
2230                         GtkTargetList *target_list = gtk_target_list_new (NULL, 0);
2231
2232                         gtk_target_list_add_uri_targets (target_list, TARGET_DND_URI);
2233                         gtk_target_list_add_image_targets (target_list, TARGET_DND_IMAGE, TRUE);
2234
2235                         gtk_drag_begin (widget, target_list,
2236                                         GDK_ACTION_COPY,
2237                                         1, (GdkEvent *)event);
2238
2239                         view->image_dnd_info.in_drag = FALSE;
2240
2241                         gtk_target_list_unref (target_list);
2242
2243                         return TRUE;
2244                 }
2245         }
2246
2247         /* For the Evince 0.4.x release, we limit selection to un-rotated
2248          * documents only.
2249          */
2250         if (view->pressed_button == 1 && view->rotation == 0) {
2251
2252                 /* Schedule timeout to scroll during selection and additionally
2253                  * scroll once to allow arbitrary speed. */
2254                 if (!view->selection_scroll_id)
2255                     view->selection_scroll_id = g_timeout_add (SCROLL_TIME, (GSourceFunc)selection_scroll_timeout_cb, view);
2256                 else
2257                     selection_scroll_timeout_cb (view);
2258
2259                 view->selection_info.in_selection = TRUE;
2260                 view->motion.x = x + view->scroll_x;
2261                 view->motion.y = y + view->scroll_y;
2262
2263                 /* Queue an idle to handle the motion.  We do this because
2264                  * handling any selection events in the motion could be slower
2265                  * than new motion events reach us.  We always put it in the
2266                  * idle to make sure we catch up and don't visibly lag the
2267                  * mouse. */
2268                 if (!view->selection_update_id)
2269                         view->selection_update_id = g_idle_add ((GSourceFunc)selection_update_idle_cb, view);
2270
2271                 return TRUE;
2272         } else if (view->pressed_button == 2) {
2273                 if (!view->drag_info.in_drag) {
2274                         gboolean start;
2275
2276                         start = gtk_drag_check_threshold (widget,
2277                                                           view->drag_info.start.x,
2278                                                           view->drag_info.start.y,
2279                                                           event->x_root,
2280                                                           event->y_root);
2281                         view->drag_info.in_drag = start;
2282                 }
2283
2284                 if (view->drag_info.in_drag) {
2285                         int dx, dy;
2286                         gdouble dhadj_value, dvadj_value;
2287
2288                         dx = event->x_root - view->drag_info.start.x;
2289                         dy = event->y_root - view->drag_info.start.y;
2290
2291                         dhadj_value = view->hadjustment->page_size *
2292                                       (gdouble)dx / widget->allocation.width;
2293                         dvadj_value = view->vadjustment->page_size *
2294                                       (gdouble)dy / widget->allocation.height;
2295
2296                         /* clamp scrolling to visible area */
2297                         gtk_adjustment_set_value (view->hadjustment,
2298                                                   MIN(view->drag_info.hadj - dhadj_value,
2299                                                       view->hadjustment->upper -
2300                                                       view->hadjustment->page_size));
2301                         gtk_adjustment_set_value (view->vadjustment,
2302                                                   MIN(view->drag_info.vadj - dvadj_value,
2303                                                       view->vadjustment->upper -
2304                                                       view->vadjustment->page_size));
2305
2306                         return TRUE;
2307                 }
2308         } else if (view->pressed_button <= 0) {
2309                 handle_link_over_xy (view, x, y);
2310                 return TRUE;
2311         }
2312
2313         return FALSE;
2314 }
2315
2316 static gboolean
2317 ev_view_button_release_event (GtkWidget      *widget,
2318                               GdkEventButton *event)
2319 {
2320         EvView *view = EV_VIEW (widget);
2321         EvLink *link;
2322
2323         if (view->pressed_button == 2) {
2324                 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
2325         }
2326
2327         if (view->document && view->pressed_button != 3) {
2328                 link = ev_view_get_link_at_location (view, event->x, event->y);
2329         } else {
2330                 link = NULL;
2331         }
2332
2333         view->pressed_button = -1;
2334         view->drag_info.in_drag = FALSE;
2335         view->image_dnd_info.in_drag = FALSE;
2336
2337         if (view->selection_scroll_id) {
2338             g_source_remove (view->selection_scroll_id);
2339             view->selection_scroll_id = 0;
2340         }
2341         if (view->selection_update_id) {
2342             g_source_remove (view->selection_update_id);
2343             view->selection_update_id = 0;
2344         }
2345
2346         if (view->selection_info.selections) {
2347                 ev_view_update_primary_selection (view);
2348
2349                 if (view->selection_info.in_drag) {
2350                         clear_selection (view);
2351                         gtk_widget_queue_draw (widget);
2352                 }
2353
2354                 view->selection_info.in_drag = FALSE;
2355         } else if (link) {
2356                 if (event->button == 2) {
2357                         EvLinkAction    *action;
2358                         EvLinkActionType type;
2359
2360                         action = ev_link_get_action (link);
2361                         if (!action)
2362                                 return FALSE;
2363
2364                         type = ev_link_action_get_action_type (action);
2365                         if (type == EV_LINK_ACTION_TYPE_GOTO_DEST) {
2366                                 g_signal_emit (view,
2367                                                signals[SIGNAL_EXTERNAL_LINK],
2368                                                0, action);
2369                         }
2370                 } else {
2371                         ev_view_handle_link (view, link);
2372                 }
2373         } else if (view->presentation) {
2374                 switch (event->button) {
2375                         case 1:
2376                                 ev_view_next_page (view);
2377                                 return TRUE;
2378                         case 3:
2379                                 ev_view_previous_page (view);
2380                                 return TRUE;
2381                 }
2382         }
2383
2384         return FALSE;
2385 }
2386
2387 /* Goto Window */
2388 /* Cut and paste from gtkwindow.c */
2389 static void
2390 send_focus_change (GtkWidget *widget,
2391                    gboolean   in)
2392 {
2393         GdkEvent *fevent = gdk_event_new (GDK_FOCUS_CHANGE);
2394
2395         g_object_ref (widget);
2396
2397         if (in)
2398                 GTK_WIDGET_SET_FLAGS (widget, GTK_HAS_FOCUS);
2399         else
2400                 GTK_WIDGET_UNSET_FLAGS (widget, GTK_HAS_FOCUS);
2401
2402         fevent->focus_change.type = GDK_FOCUS_CHANGE;
2403         fevent->focus_change.window = g_object_ref (widget->window);
2404         fevent->focus_change.in = in;
2405
2406         gtk_widget_event (widget, fevent);
2407
2408         g_object_notify (G_OBJECT (widget), "has-focus");
2409
2410         g_object_unref (widget);
2411         gdk_event_free (fevent);
2412 }
2413
2414 static void
2415 ev_view_goto_window_hide (EvView *view)
2416 {
2417         /* send focus-in event */
2418         send_focus_change (view->goto_entry, FALSE);
2419         gtk_widget_hide (view->goto_window);
2420         gtk_entry_set_text (GTK_ENTRY (view->goto_entry), "");
2421 }
2422
2423 static gboolean
2424 ev_view_goto_window_delete_event (GtkWidget   *widget,
2425                                   GdkEventAny *event,
2426                                   EvView      *view)
2427 {
2428         ev_view_goto_window_hide (view);
2429
2430         return TRUE;
2431 }
2432
2433 static gboolean
2434 key_is_numeric (guint keyval)
2435 {
2436         return ((keyval >= GDK_0 && keyval <= GDK_9) ||
2437                 (keyval >= GDK_KP_0 && keyval <= GDK_KP_9));
2438 }
2439
2440 static gboolean
2441 ev_view_goto_window_key_press_event (GtkWidget   *widget,
2442                                      GdkEventKey *event,
2443                                      EvView      *view)
2444 {
2445         switch (event->keyval) {
2446                 case GDK_Escape:
2447                 case GDK_Tab:
2448                 case GDK_KP_Tab:
2449                 case GDK_ISO_Left_Tab:
2450                         ev_view_goto_window_hide (view);
2451                         return TRUE;
2452                 case GDK_Return:
2453                 case GDK_KP_Enter:
2454                 case GDK_ISO_Enter:
2455                 case GDK_BackSpace:
2456                 case GDK_Delete:
2457                         return FALSE;
2458                 default:
2459                         if (!key_is_numeric (event->keyval))
2460                                 return TRUE;
2461         }
2462
2463         return FALSE;
2464 }
2465
2466 static gboolean
2467 ev_view_goto_window_button_press_event (GtkWidget      *widget,
2468                                         GdkEventButton *event,
2469                                         EvView         *view)
2470 {
2471         ev_view_goto_window_hide (view);
2472
2473         return TRUE;
2474 }
2475
2476 static void
2477 ev_view_goto_entry_activate (GtkEntry *entry,
2478                              EvView   *view)
2479 {
2480         const gchar *text;
2481         gint         page;
2482
2483         text = gtk_entry_get_text (entry);
2484         page = atoi (text) - 1;
2485
2486         ev_view_goto_window_hide (view);
2487
2488         if (page >= 0 &&
2489             page < ev_page_cache_get_n_pages (view->page_cache))
2490                 ev_page_cache_set_current_page (view->page_cache, page);
2491 }
2492
2493 static void
2494 ev_view_goto_window_create (EvView *view)
2495 {
2496         GtkWidget *frame, *hbox, *toplevel, *label;
2497
2498         toplevel = gtk_widget_get_toplevel (GTK_WIDGET (view));
2499
2500         if (view->goto_window) {
2501                 if (GTK_WINDOW (toplevel)->group)
2502                         gtk_window_group_add_window (GTK_WINDOW (toplevel)->group,
2503                                                      GTK_WINDOW (view->goto_window));
2504                 else if (GTK_WINDOW (view->goto_window)->group)
2505                         gtk_window_group_remove_window (GTK_WINDOW (view->goto_window)->group,
2506                                                         GTK_WINDOW (view->goto_window));
2507                 return;
2508         }
2509
2510         view->goto_window = gtk_window_new (GTK_WINDOW_POPUP);
2511
2512         if (GTK_WINDOW (toplevel)->group)
2513                 gtk_window_group_add_window (GTK_WINDOW (toplevel)->group,
2514                                              GTK_WINDOW (view->goto_window));
2515
2516         gtk_window_set_modal (GTK_WINDOW (view->goto_window), TRUE);
2517
2518         g_signal_connect (view->goto_window, "delete_event",
2519                           G_CALLBACK (ev_view_goto_window_delete_event),
2520                           view);
2521         g_signal_connect (view->goto_window, "key_press_event",
2522                           G_CALLBACK (ev_view_goto_window_key_press_event),
2523                           view);
2524         g_signal_connect (view->goto_window, "button_press_event",
2525                           G_CALLBACK (ev_view_goto_window_button_press_event),
2526                           view);
2527
2528         frame = gtk_frame_new (NULL);
2529         gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_ETCHED_IN);
2530         gtk_container_add (GTK_CONTAINER (view->goto_window), frame);
2531         gtk_widget_show (frame);
2532
2533         hbox = gtk_hbox_new (FALSE, 0);
2534         gtk_container_set_border_width (GTK_CONTAINER (hbox), 3);
2535         gtk_container_add (GTK_CONTAINER (frame), hbox);
2536         gtk_widget_show (hbox);
2537
2538         label = gtk_label_new(_("Jump to page:"));
2539         gtk_box_pack_start (GTK_BOX (hbox), label, TRUE, TRUE, 3);
2540         gtk_widget_show (label);
2541         gtk_widget_realize (label);
2542
2543         view->goto_entry = gtk_entry_new ();
2544         g_signal_connect (view->goto_entry, "activate",
2545                           G_CALLBACK (ev_view_goto_entry_activate),
2546                           view);
2547         gtk_box_pack_start_defaults (GTK_BOX (hbox), view->goto_entry);
2548         gtk_widget_show (view->goto_entry);
2549         gtk_widget_realize (view->goto_entry);
2550 }
2551
2552 static void
2553 ev_view_goto_entry_grab_focus (EvView *view)
2554 {
2555         GtkWidgetClass *entry_parent_class;
2556
2557         entry_parent_class = g_type_class_peek_parent (GTK_ENTRY_GET_CLASS (view->goto_entry));
2558         (entry_parent_class->grab_focus) (view->goto_entry);
2559
2560         send_focus_change (view->goto_entry, TRUE);
2561 }
2562
2563 static void
2564 ev_view_goto_window_send_key_event (EvView   *view,
2565                                     GdkEvent *event)
2566 {
2567         GdkEventKey *new_event;
2568         GdkScreen   *screen;
2569
2570         /* Move goto window off screen */
2571         screen = gtk_widget_get_screen (GTK_WIDGET (view));
2572         gtk_window_move (GTK_WINDOW (view->goto_window),
2573                          gdk_screen_get_width (screen) + 1,
2574                          gdk_screen_get_height (screen) + 1);
2575         gtk_widget_show (view->goto_window);
2576
2577         new_event = (GdkEventKey *) gdk_event_copy (event);
2578         g_object_unref (new_event->window);
2579         new_event->window = g_object_ref (view->goto_window->window);
2580         gtk_widget_realize (view->goto_window);
2581
2582         gtk_widget_event (view->goto_window, (GdkEvent *)new_event);
2583         gdk_event_free ((GdkEvent *)new_event);
2584         gtk_widget_hide (view->goto_window);
2585 }
2586
2587 static gboolean
2588 ev_view_key_press_event (GtkWidget   *widget,
2589                          GdkEventKey *event)
2590 {
2591         EvView *view = EV_VIEW (widget);
2592         EvPresentationState current;
2593
2594         if (!view->document)
2595                 return FALSE;
2596
2597         if (!view->presentation ||
2598             view->presentation_state == EV_PRESENTATION_END)
2599                 return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
2600
2601
2602         current = view->presentation_state;
2603
2604         switch (event->keyval) {
2605                 case GDK_b:
2606                 case GDK_B:
2607                         view->presentation_state =
2608                                 (view->presentation_state == EV_PRESENTATION_BLACK) ?
2609                                 EV_PRESENTATION_NORMAL : EV_PRESENTATION_BLACK;
2610                         break;
2611                 case GDK_w:
2612                 case GDK_W:
2613                         view->presentation_state =
2614                                 (view->presentation_state == EV_PRESENTATION_WHITE) ?
2615                                 EV_PRESENTATION_NORMAL : EV_PRESENTATION_WHITE;
2616                         break;
2617                 default:
2618                         if (view->presentation_state == EV_PRESENTATION_BLACK ||
2619                             view->presentation_state == EV_PRESENTATION_WHITE) {
2620                                 view->presentation_state = EV_PRESENTATION_NORMAL;
2621                         }
2622         }
2623
2624         if (current == view->presentation_state) {
2625                 if (ev_page_cache_get_n_pages (view->page_cache) > 1 &&
2626                     key_is_numeric (event->keyval)) {
2627                         gint x, y;
2628
2629                         ev_view_goto_window_create (view);
2630                         ev_view_goto_window_send_key_event (view, (GdkEvent *)event);
2631                         gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
2632                         gtk_window_move (GTK_WINDOW (view->goto_window), x, y);
2633                         gtk_widget_show (view->goto_window);
2634                         ev_view_goto_entry_grab_focus (view);
2635
2636                         return TRUE;
2637                 }
2638
2639                 return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
2640         }
2641
2642         switch (view->presentation_state) {
2643                 case EV_PRESENTATION_NORMAL:
2644                 case EV_PRESENTATION_BLACK:
2645                         gdk_window_set_background (widget->window,
2646                                                    &widget->style->black);
2647                         break;
2648                 case EV_PRESENTATION_WHITE:
2649                         gdk_window_set_background (widget->window,
2650                                                    &widget->style->white);
2651                         break;
2652                 default:
2653                         return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
2654         }
2655
2656         gtk_widget_queue_draw (widget);
2657         return TRUE;
2658 }
2659
2660 static gint
2661 ev_view_focus_in (GtkWidget     *widget,
2662                   GdkEventFocus *event)
2663 {
2664         if (EV_VIEW (widget)->pixbuf_cache)
2665                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
2666         gtk_widget_queue_draw (widget);
2667
2668         return FALSE;
2669 }
2670
2671 static gint
2672 ev_view_focus_out (GtkWidget     *widget,
2673                      GdkEventFocus *event)
2674 {
2675         if (EV_VIEW (widget)->goto_window)
2676                 ev_view_goto_window_hide (EV_VIEW (widget));
2677
2678         if (EV_VIEW (widget)->pixbuf_cache)
2679                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
2680         gtk_widget_queue_draw (widget);
2681
2682         return FALSE;
2683 }
2684
2685 static gboolean
2686 ev_view_leave_notify_event (GtkWidget *widget, GdkEventCrossing   *event)
2687 {
2688         EvView *view = EV_VIEW (widget);
2689
2690         ev_view_set_status (view, NULL);
2691
2692         if (view->cursor == EV_VIEW_CURSOR_LINK ||
2693             view->cursor == EV_VIEW_CURSOR_IBEAM)
2694                 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
2695
2696         if (view->link_tooltip) {
2697                 view->hovered_link = NULL;
2698                 ev_tooltip_deactivate (EV_TOOLTIP (view->link_tooltip));
2699         }
2700
2701         return FALSE;
2702 }
2703
2704 static gboolean
2705 ev_view_enter_notify_event (GtkWidget *widget, GdkEventCrossing   *event)
2706 {
2707         EvView *view = EV_VIEW (widget);
2708
2709         handle_link_over_xy (view, event->x, event->y);
2710
2711         return FALSE;
2712 }
2713
2714 static void
2715 ev_view_style_set (GtkWidget *widget,
2716                    GtkStyle  *old_style)
2717 {
2718         if (EV_VIEW (widget)->pixbuf_cache)
2719                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
2720
2721         GTK_WIDGET_CLASS (ev_view_parent_class)->style_set (widget, old_style);
2722 }
2723
2724 /*** Drawing ***/
2725
2726 static guint32
2727 ev_gdk_color_to_rgb (const GdkColor *color)
2728 {
2729   guint32 result;
2730   result = (0xff0000 | (color->red & 0xff00));
2731   result <<= 8;
2732   result |= ((color->green & 0xff00) | (color->blue >> 8));
2733   return result;
2734 }
2735
2736 static void
2737 draw_rubberband (GtkWidget *widget, GdkWindow *window,
2738                  const GdkRectangle *rect, guchar alpha)
2739 {
2740         GdkGC *gc;
2741         GdkPixbuf *pixbuf;
2742         GdkColor *fill_color_gdk;
2743         guint fill_color;
2744
2745         fill_color_gdk = gdk_color_copy (&GTK_WIDGET (widget)->style->base[GTK_STATE_SELECTED]);
2746         fill_color = ev_gdk_color_to_rgb (fill_color_gdk) << 8 | alpha;
2747
2748         pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE, 8,
2749                                  rect->width, rect->height);
2750         gdk_pixbuf_fill (pixbuf, fill_color);
2751
2752         gdk_draw_pixbuf (window, NULL, pixbuf,
2753                          0, 0,
2754                          rect->x - EV_VIEW (widget)->scroll_x, rect->y - EV_VIEW (widget)->scroll_y,
2755                          rect->width, rect->height,
2756                          GDK_RGB_DITHER_NONE,
2757                          0, 0);
2758
2759         g_object_unref (pixbuf);
2760
2761         gc = gdk_gc_new (window);
2762         gdk_gc_set_rgb_fg_color (gc, fill_color_gdk);
2763         gdk_draw_rectangle (window, gc, FALSE,
2764                             rect->x - EV_VIEW (widget)->scroll_x, rect->y - EV_VIEW (widget)->scroll_y,
2765                             rect->width - 1,
2766                             rect->height - 1);
2767         g_object_unref (gc);
2768
2769         gdk_color_free (fill_color_gdk);
2770 }
2771
2772
2773 static void
2774 highlight_find_results (EvView *view, int page)
2775 {
2776         EvDocumentFind *find;
2777         int i, results = 0;
2778
2779         find = EV_DOCUMENT_FIND (view->document);
2780
2781         results = ev_document_find_get_n_results (find, page);
2782
2783         for (i = 0; i < results; i++) {
2784                 EvRectangle rectangle;
2785                 GdkRectangle view_rectangle;
2786                 guchar alpha;
2787
2788                 if (i == view->find_result && page == view->current_page) {
2789                         alpha = 0x90;
2790                 } else {
2791                         alpha = 0x20;
2792                 }
2793
2794                 ev_document_find_get_result (find, page, i, &rectangle);
2795                 doc_rect_to_view_rect (view, page, &rectangle, &view_rectangle);
2796                 draw_rubberband (GTK_WIDGET (view), GTK_WIDGET(view)->window,
2797                                  &view_rectangle, alpha);
2798         }
2799 }
2800
2801 static void
2802 draw_loading_text (EvView       *view,
2803                    GdkRectangle *page_area,
2804                    GdkRectangle *expose_area)
2805 {
2806         cairo_t *cr;
2807         gint     width, height;
2808
2809         /* Don't annoy users with loading messages during presentations.
2810          * FIXME: Temporary "workaround" for
2811          * http://bugzilla.gnome.org/show_bug.cgi?id=320352 */
2812         if (view->presentation)
2813                 return;
2814
2815         if (!view->loading_text) {
2816                 const gchar *loading_text = _("Loading...");
2817                 PangoLayout *layout;
2818                 PangoFontDescription *font_desc;
2819                 PangoRectangle logical_rect;
2820                 gint target_width;
2821                 gdouble real_scale;
2822
2823                 ev_document_fc_mutex_lock ();
2824
2825                 layout = gtk_widget_create_pango_layout (GTK_WIDGET (view), loading_text);
2826
2827                 font_desc = pango_font_description_new ();
2828
2829                 /* We set the font to be 10 points, get the size, and scale appropriately */
2830                 pango_font_description_set_size (font_desc, 10 * PANGO_SCALE);
2831                 pango_layout_set_font_description (layout, font_desc);
2832                 pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
2833
2834                 target_width = MAX (page_area->width / 2, 1);
2835                 real_scale = ((double)target_width / (double) logical_rect.width) * (PANGO_SCALE * 10);
2836                 pango_font_description_set_size (font_desc, (int)real_scale);
2837                 pango_layout_set_font_description (layout, font_desc);
2838                 pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
2839
2840                 view->loading_text = cairo_image_surface_create (CAIRO_FORMAT_ARGB32,
2841                                                                  logical_rect.width,
2842                                                                  logical_rect.height);
2843                 cr = cairo_create (view->loading_text);
2844                 cairo_set_source_rgb (cr,
2845                                       155 / (double)255,
2846                                       155 / (double)255,
2847                                       155 / (double)255);
2848                 pango_cairo_show_layout (cr, layout);
2849                 cairo_destroy (cr);
2850
2851                 pango_font_description_free (font_desc);
2852                 g_object_unref (layout);
2853
2854                 ev_document_fc_mutex_unlock ();
2855         }
2856
2857         width = (page_area->width - cairo_image_surface_get_width (view->loading_text)) / 2;
2858         height = (page_area->height - cairo_image_surface_get_height (view->loading_text)) / 2;
2859
2860         cr = gdk_cairo_create (GTK_WIDGET (view)->window);
2861         cairo_translate (cr,
2862                          page_area->x + width,
2863                          page_area->y + height);
2864         cairo_set_source_surface (cr, view->loading_text, 0, 0);
2865         cairo_paint (cr);
2866         cairo_destroy (cr);
2867 }
2868
2869 static void
2870 draw_one_page (EvView       *view,
2871                gint          page,
2872                GdkRectangle *page_area,
2873                GtkBorder    *border,
2874                GdkRectangle *expose_area,
2875                gboolean     *page_ready)
2876 {
2877         GdkRectangle overlap;
2878         GdkRectangle real_page_area;
2879
2880         g_assert (view->document);
2881
2882         if (! gdk_rectangle_intersect (page_area, expose_area, &overlap))
2883                 return;
2884
2885         /* Render the document itself */
2886         real_page_area = *page_area;
2887
2888         real_page_area.x += border->left;
2889         real_page_area.y += border->top;
2890         real_page_area.width -= (border->left + border->right);
2891         real_page_area.height -= (border->top + border->bottom);
2892         *page_ready = TRUE;
2893
2894         if (!view->presentation) {
2895                 gint current_page;
2896
2897                 current_page = ev_page_cache_get_current_page (view->page_cache);
2898                 ev_document_misc_paint_one_page (GTK_WIDGET (view)->window,
2899                                                  GTK_WIDGET (view),
2900                                                  page_area, border,
2901                                                  page == current_page);
2902         }
2903
2904         if (gdk_rectangle_intersect (&real_page_area, expose_area, &overlap)) {
2905                 gint             width, height;
2906                 gint             page_width, page_height;
2907                 cairo_surface_t *page_surface = NULL;
2908                 gint             selection_width, selection_height;
2909                 cairo_surface_t *selection_surface = NULL;
2910                 cairo_t         *cr = NULL;
2911
2912                 page_surface = ev_pixbuf_cache_get_surface (view->pixbuf_cache, page);
2913
2914                 if (!page_surface) {
2915                         draw_loading_text (view,
2916                                            &real_page_area,
2917                                            expose_area);
2918                         *page_ready = FALSE;
2919
2920                         return;
2921                 }
2922
2923                 ev_page_cache_get_size (view->page_cache,
2924                                         page, view->rotation,
2925                                         view->scale,
2926                                         &width, &height);
2927
2928                 cr = gdk_cairo_create (GTK_WIDGET (view)->window);
2929
2930                 cairo_save (cr);
2931
2932                 page_width = cairo_image_surface_get_width (page_surface);
2933                 page_height = cairo_image_surface_get_height (page_surface);
2934
2935                 cairo_rectangle (cr, overlap.x, overlap.y, overlap.width, overlap.height);
2936                 cairo_clip (cr);
2937
2938                 cairo_translate (cr, overlap.x, overlap.y);
2939
2940                 if (width != page_width || height != page_height) {
2941                         cairo_pattern_set_filter (cairo_get_source (cr),
2942                                                   CAIRO_FILTER_FAST);
2943                         cairo_scale (cr,
2944                                      (gdouble)width / page_width,
2945                                      (gdouble)height / page_height);
2946                 }
2947
2948                 cairo_surface_set_device_offset (page_surface,
2949                                                  overlap.x - real_page_area.x,
2950                                                  overlap.y - real_page_area.y);
2951
2952                 cairo_set_source_surface (cr, page_surface, 0, 0);
2953                 cairo_paint (cr);
2954
2955                 cairo_restore (cr);
2956
2957                 /* Get the selection pixbuf iff we have something to draw */
2958                 if (find_selection_for_page (view, page) &&
2959                     view->selection_mode == EV_VIEW_SELECTION_TEXT) {
2960                         selection_surface =
2961                                 ev_pixbuf_cache_get_selection_surface (view->pixbuf_cache,
2962                                                                        page,
2963                                                                        view->scale,
2964                                                                        NULL);
2965                 }
2966
2967                 if (!selection_surface) {
2968                         cairo_destroy (cr);
2969                         return;
2970                 }
2971
2972                 selection_width = cairo_image_surface_get_width (selection_surface);
2973                 selection_height = cairo_image_surface_get_height (selection_surface);
2974
2975                 cairo_rectangle (cr, overlap.x, overlap.y, overlap.width, overlap.height);
2976                 cairo_clip (cr);
2977
2978                 cairo_translate (cr, overlap.x, overlap.y);
2979
2980                 if (width != selection_width || height != selection_height) {
2981                         cairo_pattern_set_filter (cairo_get_source (cr),
2982                                                   CAIRO_FILTER_FAST);
2983                         cairo_scale (cr,
2984                                      (gdouble)width / selection_width,
2985                                      (gdouble)height / selection_height);
2986                 }
2987
2988                 cairo_surface_set_device_offset (selection_surface,
2989                                                  overlap.x - real_page_area.x,
2990                                                  overlap.y - real_page_area.y);
2991
2992                 cairo_set_source_surface (cr, selection_surface, 0, 0);
2993                 cairo_paint (cr);
2994                 cairo_destroy (cr);
2995         }
2996 }
2997
2998 /*** GObject functions ***/
2999
3000 static void
3001 ev_view_finalize (GObject *object)
3002 {
3003         EvView *view = EV_VIEW (object);
3004
3005         g_free (view->status);
3006         g_free (view->find_status);
3007
3008         clear_selection (view);
3009
3010         if (view->image_dnd_info.image)
3011                 g_object_unref (view->image_dnd_info.image);
3012         view->image_dnd_info.image = NULL;
3013
3014         G_OBJECT_CLASS (ev_view_parent_class)->finalize (object);
3015 }
3016
3017 static void
3018 ev_view_destroy (GtkObject *object)
3019 {
3020         EvView *view = EV_VIEW (object);
3021
3022         if (view->document) {
3023                 g_object_unref (view->document);
3024                 view->document = NULL;
3025         }
3026
3027         if (view->pixbuf_cache) {
3028                 g_object_unref (view->pixbuf_cache);
3029                 view->pixbuf_cache = NULL;
3030         }
3031
3032         if (view->link_tooltip) {
3033                 gtk_widget_destroy (view->link_tooltip);
3034                 view->link_tooltip = NULL;
3035         }
3036
3037         if (view->goto_window) {
3038                 gtk_widget_destroy (view->goto_window);
3039                 view->goto_window = NULL;
3040                 view->goto_entry = NULL;
3041         }
3042
3043         if (view->selection_scroll_id) {
3044             g_source_remove (view->selection_scroll_id);
3045             view->selection_scroll_id = 0;
3046         }
3047
3048         if (view->selection_update_id) {
3049             g_source_remove (view->selection_update_id);
3050             view->selection_update_id = 0;
3051         }
3052
3053         if (view->loading_text) {
3054                 cairo_surface_destroy (view->loading_text);
3055                 view->loading_text = NULL;
3056         }
3057
3058         ev_view_presentation_transition_stop (view);
3059
3060         ev_view_set_scroll_adjustments (view, NULL, NULL);
3061
3062         GTK_OBJECT_CLASS (ev_view_parent_class)->destroy (object);
3063 }
3064
3065 static void
3066 ev_view_set_property (GObject      *object,
3067                       guint         prop_id,
3068                       const GValue *value,
3069                       GParamSpec   *pspec)
3070 {
3071         EvView *view = EV_VIEW (object);
3072
3073         switch (prop_id) {
3074                 case PROP_CONTINUOUS:
3075                         ev_view_set_continuous (view, g_value_get_boolean (value));
3076                         break;
3077                 case PROP_DUAL_PAGE:
3078                         ev_view_set_dual_page (view, g_value_get_boolean (value));
3079                         break;
3080                 case PROP_FULLSCREEN:
3081                         ev_view_set_fullscreen (view, g_value_get_boolean (value));
3082                         break;
3083                 case PROP_PRESENTATION:
3084                         ev_view_set_presentation (view, g_value_get_boolean (value));
3085                         break;
3086                 case PROP_SIZING_MODE:
3087                         ev_view_set_sizing_mode (view, g_value_get_enum (value));
3088                         break;
3089                 case PROP_ZOOM:
3090                         ev_view_set_zoom (view, g_value_get_double (value), FALSE);
3091                         break;
3092                 case PROP_ROTATION:
3093                         ev_view_set_rotation (view, g_value_get_int (value));
3094                         break;
3095                 default:
3096                         G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
3097         }
3098 }
3099
3100 static AtkObject *
3101 ev_view_get_accessible (GtkWidget *widget)
3102 {
3103         static gboolean first_time = TRUE;
3104
3105         if (first_time) {
3106                 AtkObjectFactory *factory;
3107                 AtkRegistry *registry;
3108                 GType derived_type;
3109                 GType derived_atk_type;
3110
3111                 /*
3112                  * Figure out whether accessibility is enabled by looking at the
3113                  * type of the accessible object which would be created for
3114                  * the parent type of EvView.
3115                  */
3116                 derived_type = g_type_parent (EV_TYPE_VIEW);
3117
3118                 registry = atk_get_default_registry ();
3119                 factory = atk_registry_get_factory (registry,
3120                                                     derived_type);
3121                 derived_atk_type = atk_object_factory_get_accessible_type (factory);
3122                 if (g_type_is_a (derived_atk_type, GTK_TYPE_ACCESSIBLE))
3123                         atk_registry_set_factory_type (registry,
3124                                                        EV_TYPE_VIEW,
3125                                                        ev_view_accessible_factory_get_type ());
3126                 first_time = FALSE;
3127         }
3128         return GTK_WIDGET_CLASS (ev_view_parent_class)->get_accessible (widget);
3129 }
3130
3131 static void
3132 ev_view_get_property (GObject *object,
3133                       guint prop_id,
3134                       GValue *value,
3135                       GParamSpec *pspec)
3136 {
3137         EvView *view = EV_VIEW (object);
3138
3139         switch (prop_id) {
3140                 case PROP_STATUS:
3141                         g_value_set_string (value, view->status);
3142                         break;
3143                 case PROP_FIND_STATUS:
3144                         g_value_set_string (value, view->status);
3145                         break;
3146                 case PROP_CONTINUOUS:
3147                         g_value_set_boolean (value, view->continuous);
3148                         break;
3149                 case PROP_DUAL_PAGE:
3150                         g_value_set_boolean (value, view->dual_page);
3151                         break;
3152                 case PROP_FULLSCREEN:
3153                         g_value_set_boolean (value, view->fullscreen);
3154                         break;
3155                 case PROP_PRESENTATION:
3156                         g_value_set_boolean (value, view->presentation);
3157                         break;
3158                 case PROP_SIZING_MODE:
3159                         g_value_set_enum (value, view->sizing_mode);
3160                         break;
3161                 case PROP_ZOOM:
3162                         g_value_set_double (value, view->scale);
3163                         break;
3164                 case PROP_ROTATION:
3165                         g_value_set_int (value, view->rotation);
3166                         break;
3167                 case PROP_HAS_SELECTION:
3168                         g_value_set_boolean (value,
3169                                              view->selection_info.selections != NULL);
3170                         break;
3171                 default:
3172                         G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
3173         }
3174 }
3175
3176 static void
3177 ev_view_class_init (EvViewClass *class)
3178 {
3179         GObjectClass *object_class = G_OBJECT_CLASS (class);
3180         GtkObjectClass *gtk_object_class = GTK_OBJECT_CLASS (class);
3181         GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
3182         GtkBindingSet *binding_set;
3183
3184         object_class->finalize = ev_view_finalize;
3185         object_class->set_property = ev_view_set_property;
3186         object_class->get_property = ev_view_get_property;
3187
3188         widget_class->expose_event = ev_view_expose_event;
3189         widget_class->button_press_event = ev_view_button_press_event;
3190         widget_class->motion_notify_event = ev_view_motion_notify_event;
3191         widget_class->button_release_event = ev_view_button_release_event;
3192         widget_class->key_press_event = ev_view_key_press_event;
3193         widget_class->focus_in_event = ev_view_focus_in;
3194         widget_class->focus_out_event = ev_view_focus_out;
3195         widget_class->get_accessible = ev_view_get_accessible;
3196         widget_class->size_request = ev_view_size_request;
3197         widget_class->size_allocate = ev_view_size_allocate;
3198         widget_class->realize = ev_view_realize;
3199         widget_class->scroll_event = ev_view_scroll_event;
3200         widget_class->enter_notify_event = ev_view_enter_notify_event;
3201         widget_class->leave_notify_event = ev_view_leave_notify_event;
3202         widget_class->style_set = ev_view_style_set;
3203         widget_class->drag_data_get = ev_view_drag_data_get;
3204         widget_class->drag_motion = ev_view_drag_motion;
3205         widget_class->drag_data_received = ev_view_drag_data_received;
3206         widget_class->popup_menu = ev_view_popup_menu;
3207         gtk_object_class->destroy = ev_view_destroy;
3208
3209         class->set_scroll_adjustments = ev_view_set_scroll_adjustments;
3210         class->binding_activated = ev_view_scroll;
3211
3212         widget_class->set_scroll_adjustments_signal =
3213             g_signal_new ("set-scroll-adjustments",
3214                           G_OBJECT_CLASS_TYPE (object_class),
3215                           G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
3216                           G_STRUCT_OFFSET (EvViewClass, set_scroll_adjustments),
3217                           NULL, NULL,
3218                           ev_marshal_VOID__OBJECT_OBJECT,
3219                           G_TYPE_NONE, 2,
3220                           GTK_TYPE_ADJUSTMENT,
3221                           GTK_TYPE_ADJUSTMENT);
3222
3223         signals[SIGNAL_BINDING_ACTIVATED] = g_signal_new ("binding_activated",
3224                          G_TYPE_FROM_CLASS (object_class),
3225                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
3226                          G_STRUCT_OFFSET (EvViewClass, binding_activated),
3227                          NULL, NULL,
3228                          ev_marshal_VOID__ENUM_BOOLEAN,
3229                          G_TYPE_NONE, 2,
3230                          GTK_TYPE_SCROLL_TYPE,
3231                          G_TYPE_BOOLEAN);
3232
3233         signals[SIGNAL_ZOOM_INVALID] = g_signal_new ("zoom-invalid",
3234                          G_TYPE_FROM_CLASS (object_class),
3235                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
3236                          G_STRUCT_OFFSET (EvViewClass, zoom_invalid),
3237                          NULL, NULL,
3238                          ev_marshal_VOID__VOID,
3239                          G_TYPE_NONE, 0, G_TYPE_NONE);
3240         signals[SIGNAL_HANDLE_LINK] = g_signal_new ("handle-link",
3241                          G_TYPE_FROM_CLASS (object_class),
3242                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
3243                          G_STRUCT_OFFSET (EvViewClass, handle_link),
3244                          NULL, NULL,
3245                          g_cclosure_marshal_VOID__OBJECT,
3246                          G_TYPE_NONE, 1,
3247                          G_TYPE_OBJECT);
3248         signals[SIGNAL_EXTERNAL_LINK] = g_signal_new ("external-link",
3249                          G_TYPE_FROM_CLASS (object_class),
3250                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
3251                          G_STRUCT_OFFSET (EvViewClass, external_link),
3252                          NULL, NULL,
3253                          g_cclosure_marshal_VOID__OBJECT,
3254                          G_TYPE_NONE, 1,
3255                          G_TYPE_OBJECT);
3256         signals[SIGNAL_POPUP_MENU] = g_signal_new ("popup",
3257                          G_TYPE_FROM_CLASS (object_class),
3258                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
3259                          G_STRUCT_OFFSET (EvViewClass, popup_menu),
3260                          NULL, NULL,
3261                          g_cclosure_marshal_VOID__OBJECT,
3262                          G_TYPE_NONE, 1,
3263                          G_TYPE_OBJECT);
3264
3265         g_object_class_install_property (object_class,
3266                                          PROP_STATUS,
3267                                          g_param_spec_string ("status",
3268                                                               "Status Message",
3269                                                               "The status message",
3270                                                               NULL,
3271                                                               G_PARAM_READABLE));
3272
3273         g_object_class_install_property (object_class,
3274                                          PROP_FIND_STATUS,
3275                                          g_param_spec_string ("find-status",
3276                                                               "Find Status Message",
3277                                                               "The find status message",
3278                                                               NULL,
3279                                                               G_PARAM_READABLE));
3280
3281         g_object_class_install_property (object_class,
3282                                          PROP_CONTINUOUS,
3283                                          g_param_spec_boolean ("continuous",
3284                                                                "Continuous",
3285                                                                "Continuous scrolling mode",
3286                                                                TRUE,
3287                                                                G_PARAM_READWRITE));
3288
3289         g_object_class_install_property (object_class,
3290                                          PROP_DUAL_PAGE,
3291                                          g_param_spec_boolean ("dual-page",
3292                                                                "Dual Page",
3293                                                                "Two pages visible at once",
3294                                                                FALSE,
3295                                                                G_PARAM_READWRITE));
3296         g_object_class_install_property (object_class,
3297                                          PROP_FULLSCREEN,
3298                                          g_param_spec_boolean ("fullscreen",
3299                                                                "Full Screen",
3300                                                                "Draw page in a fullscreen fashion",
3301                                                                FALSE,
3302                                                                G_PARAM_READWRITE));
3303         g_object_class_install_property (object_class,
3304                                          PROP_PRESENTATION,
3305                                          g_param_spec_boolean ("presentation",
3306                                                                "Presentation",
3307                                                                "Draw page in presentation mode",
3308                                                                TRUE,
3309                                                                G_PARAM_READWRITE));
3310
3311         g_object_class_install_property (object_class,
3312                                          PROP_SIZING_MODE,
3313                                          g_param_spec_enum ("sizing-mode",
3314                                                             "Sizing Mode",
3315                                                             "Sizing Mode",
3316                                                             EV_TYPE_SIZING_MODE,
3317                                                             EV_SIZING_FIT_WIDTH,
3318                                                             G_PARAM_READWRITE));
3319
3320         g_object_class_install_property (object_class,
3321                                          PROP_ZOOM,
3322                                          g_param_spec_double ("zoom",
3323                                                               "Zoom factor",
3324                                                               "Zoom factor",
3325                                                               0,
3326                                                               G_MAXDOUBLE,
3327                                                               1.0,
3328                                                               G_PARAM_READWRITE));
3329         g_object_class_install_property (object_class,
3330                                          PROP_ROTATION,
3331                                          g_param_spec_double ("rotation",
3332                                                               "Rotation",
3333                                                               "Rotation",
3334                                                               0,
3335                                                               360,
3336                                                               0,
3337                                                               G_PARAM_READWRITE));
3338         g_object_class_install_property (object_class,
3339                                          PROP_HAS_SELECTION,
3340                                          g_param_spec_boolean ("has-selection",
3341                                                                "Has selection",
3342                                                                "The view has selections",
3343                                                                FALSE,
3344                                                                G_PARAM_READABLE));
3345
3346         binding_set = gtk_binding_set_by_class (class);
3347
3348         add_scroll_binding_keypad (binding_set, GDK_Left,  0, EV_SCROLL_STEP_BACKWARD, TRUE);
3349         add_scroll_binding_keypad (binding_set, GDK_Right, 0, EV_SCROLL_STEP_FORWARD,  TRUE);
3350         add_scroll_binding_keypad (binding_set, GDK_Left,  GDK_MOD1_MASK, EV_SCROLL_STEP_DOWN, TRUE);
3351         add_scroll_binding_keypad (binding_set, GDK_Right, GDK_MOD1_MASK, EV_SCROLL_STEP_UP,  TRUE);
3352         add_scroll_binding_keypad (binding_set, GDK_Up,    0, EV_SCROLL_STEP_BACKWARD, FALSE);
3353         add_scroll_binding_keypad (binding_set, GDK_Down,  0, EV_SCROLL_STEP_FORWARD,  FALSE);
3354         add_scroll_binding_keypad (binding_set, GDK_Up,    GDK_MOD1_MASK, EV_SCROLL_STEP_DOWN, FALSE);
3355         add_scroll_binding_keypad (binding_set, GDK_Down,  GDK_MOD1_MASK, EV_SCROLL_STEP_UP,  FALSE);
3356 }
3357
3358 static void
3359 ev_view_init (EvView *view)
3360 {
3361         GTK_WIDGET_SET_FLAGS (view, GTK_CAN_FOCUS);
3362
3363         view->spacing = 5;
3364         view->scale = 1.0;
3365         view->current_page = 0;
3366         view->pressed_button = -1;
3367         view->cursor = EV_VIEW_CURSOR_NORMAL;
3368         view->drag_info.in_drag = FALSE;
3369         view->selection_info.selections = NULL;
3370         view->selection_info.in_selection = FALSE;
3371         view->selection_info.in_drag = FALSE;
3372         view->selection_mode = EV_VIEW_SELECTION_TEXT;
3373         view->continuous = TRUE;
3374         view->dual_page = FALSE;
3375         view->presentation = FALSE;
3376         view->presentation_state = EV_PRESENTATION_NORMAL;
3377         view->fullscreen = FALSE;
3378         view->sizing_mode = EV_SIZING_FIT_WIDTH;
3379         view->pending_scroll = SCROLL_TO_KEEP_POSITION;
3380         view->jump_to_find_result = TRUE;
3381
3382         gtk_drag_dest_set (GTK_WIDGET (view),
3383                            GTK_DEST_DEFAULT_ALL,
3384                            view_drop_targets,
3385                            G_N_ELEMENTS (view_drop_targets),
3386                            GDK_ACTION_COPY);
3387 }
3388
3389 /*** Callbacks ***/
3390
3391 static void
3392 find_changed_cb (EvDocument *document, int page, EvView *view)
3393 {
3394         double percent;
3395         int n_pages;
3396
3397         percent = ev_document_find_get_progress
3398                         (EV_DOCUMENT_FIND (view->document));
3399         n_pages = ev_page_cache_get_n_pages (view->page_cache);
3400
3401         if (view->jump_to_find_result == TRUE) {
3402                 jump_to_find_page (view, EV_VIEW_FIND_NEXT, 0);
3403                 jump_to_find_result (view);
3404         }
3405         update_find_status_message (view, percent * n_pages >= n_pages - 1 );
3406         if (view->current_page == page)
3407                 gtk_widget_queue_draw (GTK_WIDGET (view));
3408 }
3409
3410 static void
3411 job_finished_cb (EvPixbufCache *pixbuf_cache,
3412                  EvView        *view)
3413 {
3414         gtk_widget_queue_draw (GTK_WIDGET (view));
3415 }
3416
3417 static void
3418 page_changed_cb (EvPageCache *page_cache,
3419                  int          new_page,
3420                  EvView      *view)
3421 {
3422         if (view->current_page != new_page) {
3423                 gint x, y;
3424
3425                 view->current_page = new_page;
3426                 view->pending_scroll = SCROLL_TO_PAGE_POSITION;
3427
3428                 if (view->presentation)
3429                         ev_view_presentation_transition_start (view);
3430
3431                 gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
3432                 handle_link_over_xy (view, x, y);
3433
3434                 gtk_widget_queue_resize (GTK_WIDGET (view));
3435         } else {
3436                 gtk_widget_queue_draw (GTK_WIDGET (view));
3437         }
3438
3439         if (EV_IS_DOCUMENT_FIND (view->document)) {
3440                 view->find_result = 0;
3441                 update_find_status_message (view, TRUE);
3442         }
3443 }
3444
3445 static void
3446 on_adjustment_value_changed (GtkAdjustment *adjustment,
3447                              EvView        *view)
3448 {
3449         int dx = 0, dy = 0;
3450         gint x, y;
3451
3452         if (! GTK_WIDGET_REALIZED (view))
3453                 return;
3454
3455         if (view->hadjustment) {
3456                 dx = view->scroll_x - (int) view->hadjustment->value;
3457                 view->scroll_x = (int) view->hadjustment->value;
3458         } else {
3459                 view->scroll_x = 0;
3460         }
3461
3462         if (view->vadjustment) {
3463                 dy = view->scroll_y - (int) view->vadjustment->value;
3464                 view->scroll_y = (int) view->vadjustment->value;
3465         } else {
3466                 view->scroll_y = 0;
3467         }
3468
3469         if (view->pending_resize)
3470                 gtk_widget_queue_draw (GTK_WIDGET (view));
3471         else
3472                 gdk_window_scroll (GTK_WIDGET (view)->window, dx, dy);
3473
3474         gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
3475         handle_link_over_xy (view, x, y);
3476
3477         if (view->document)
3478                 view_update_range_and_current_page (view);
3479 }
3480
3481 GtkWidget*
3482 ev_view_new (void)
3483 {
3484         GtkWidget *view;
3485
3486         view = g_object_new (EV_TYPE_VIEW, NULL);
3487
3488         return view;
3489 }
3490
3491 static void
3492 setup_caches (EvView *view)
3493 {
3494         view->page_cache = ev_page_cache_get (view->document);
3495         g_signal_connect (view->page_cache, "page-changed", G_CALLBACK (page_changed_cb), view);
3496         view->pixbuf_cache = ev_pixbuf_cache_new (GTK_WIDGET (view), view->document);
3497         g_signal_connect (view->pixbuf_cache, "job-finished", G_CALLBACK (job_finished_cb), view);
3498         page_changed_cb (view->page_cache,
3499                          ev_page_cache_get_current_page (view->page_cache),
3500                          view);
3501 }
3502
3503 static void
3504 clear_caches (EvView *view)
3505 {
3506         if (view->pixbuf_cache) {
3507                 g_object_unref (view->pixbuf_cache);
3508                 view->pixbuf_cache = NULL;
3509         }
3510
3511         if (view->page_cache) {
3512                 view->page_cache = NULL;
3513         }
3514 }
3515
3516 void
3517 ev_view_set_loading (EvView       *view,
3518                      gboolean      loading)
3519 {
3520         view->loading = loading;
3521         gtk_widget_queue_draw (GTK_WIDGET (view));
3522 }
3523
3524 void
3525 ev_view_set_document (EvView     *view,
3526                       EvDocument *document)
3527 {
3528         g_return_if_fail (EV_IS_VIEW (view));
3529
3530         view->loading = FALSE;
3531
3532         if (document != view->document) {
3533                 clear_caches (view);
3534
3535                 if (view->document) {
3536                         g_signal_handlers_disconnect_by_func (view->document,
3537                                                               find_changed_cb,
3538                                                               view);
3539                         g_object_unref (view->document);
3540                         view->page_cache = NULL;
3541
3542                 }
3543
3544                 view->document = document;
3545                 view->find_result = 0;
3546
3547                 if (view->document) {
3548                         g_object_ref (view->document);
3549                         if (EV_IS_DOCUMENT_FIND (view->document)) {
3550                                 g_signal_connect (view->document,
3551                                                   "find_changed",
3552                                                   G_CALLBACK (find_changed_cb),
3553                                                   view);
3554                         }
3555
3556                         setup_caches (view);
3557                 }
3558
3559                 gtk_widget_queue_resize (GTK_WIDGET (view));
3560         }
3561 }
3562
3563 /*** Zoom and sizing mode ***/
3564
3565 #define EPSILON 0.0000001
3566 void
3567 ev_view_set_zoom (EvView   *view,
3568                   double    factor,
3569                   gboolean  relative)
3570 {
3571         double scale;
3572
3573         if (relative)
3574                 scale = view->scale * factor;
3575         else
3576                 scale = factor;
3577
3578         scale = CLAMP (scale, view->min_scale, view->max_scale);
3579
3580         if (ABS (view->scale - scale) < EPSILON)
3581                 return;
3582
3583         if (view->loading_text) {
3584                 cairo_surface_destroy (view->loading_text);
3585                 view->loading_text = NULL;
3586         }
3587
3588         view->scale = scale;
3589         view->pending_resize = TRUE;
3590
3591         gtk_widget_queue_resize (GTK_WIDGET (view));
3592
3593         g_object_notify (G_OBJECT (view), "zoom");
3594 }
3595
3596 double
3597 ev_view_get_zoom (EvView *view)
3598 {
3599         return view->scale;
3600 }
3601
3602 void
3603 ev_view_set_screen_dpi (EvView  *view,
3604                         gdouble  dpi)
3605 {
3606         g_return_if_fail (EV_IS_VIEW (view));
3607         g_return_if_fail (dpi > 0);
3608
3609         view->dpi = dpi;
3610         view->min_scale = MIN_SCALE * dpi / 72.0;
3611         view->max_scale = MAX_SCALE * dpi / 72.0;
3612 }
3613
3614 gboolean
3615 ev_view_get_continuous (EvView *view)
3616 {
3617         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
3618
3619         return view->continuous;
3620 }
3621
3622 void
3623 ev_view_set_continuous (EvView   *view,
3624                         gboolean  continuous)
3625 {
3626         g_return_if_fail (EV_IS_VIEW (view));
3627
3628         continuous = continuous != FALSE;
3629
3630         if (view->continuous != continuous) {
3631                 view->continuous = continuous;
3632                 view->pending_scroll = SCROLL_TO_PAGE_POSITION;
3633                 gtk_widget_queue_resize (GTK_WIDGET (view));
3634         }
3635
3636         g_object_notify (G_OBJECT (view), "continuous");
3637 }
3638
3639 gboolean
3640 ev_view_get_dual_page (EvView *view)
3641 {
3642         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
3643
3644         return view->dual_page;
3645 }
3646
3647 void
3648 ev_view_set_dual_page (EvView   *view,
3649                        gboolean  dual_page)
3650 {
3651         g_return_if_fail (EV_IS_VIEW (view));
3652
3653         dual_page = dual_page != FALSE;
3654
3655         if (view->dual_page == dual_page)
3656                 return;
3657
3658         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
3659         view->dual_page = dual_page;
3660         /* FIXME: if we're keeping the pixbuf cache around, we should extend the
3661          * preload_cache_size to be 2 if dual_page is set.
3662          */
3663         gtk_widget_queue_resize (GTK_WIDGET (view));
3664
3665         g_object_notify (G_OBJECT (view), "dual-page");
3666 }
3667
3668 void
3669 ev_view_set_fullscreen (EvView   *view,
3670                          gboolean  fullscreen)
3671 {
3672         g_return_if_fail (EV_IS_VIEW (view));
3673
3674         fullscreen = fullscreen != FALSE;
3675
3676         if (view->fullscreen == fullscreen)
3677                 return;
3678
3679         view->fullscreen = fullscreen;
3680         gtk_widget_queue_resize (GTK_WIDGET (view));
3681
3682         g_object_notify (G_OBJECT (view), "fullscreen");
3683 }
3684
3685 gboolean
3686 ev_view_get_fullscreen (EvView *view)
3687 {
3688         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
3689
3690         return view->fullscreen;
3691 }
3692
3693 void
3694 ev_view_set_presentation (EvView   *view,
3695                           gboolean  presentation)
3696 {
3697         g_return_if_fail (EV_IS_VIEW (view));
3698
3699         presentation = presentation != FALSE;
3700
3701         if (view->presentation == presentation)
3702                 return;
3703
3704         if (!presentation)
3705                 view->presentation_state = EV_PRESENTATION_NORMAL;
3706
3707         view->presentation = presentation;
3708         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
3709
3710         if (presentation) {
3711                 view->sizing_mode_saved = view->sizing_mode;
3712                 view->scale_saved = view->scale;
3713                 ev_view_set_sizing_mode (view, EV_SIZING_BEST_FIT);
3714         } else {
3715                 ev_view_set_sizing_mode (view, view->sizing_mode_saved);
3716                 ev_view_set_zoom (view, view->scale_saved, FALSE);
3717         }
3718
3719         gtk_widget_queue_resize (GTK_WIDGET (view));
3720
3721         if (presentation)
3722                 ev_view_presentation_transition_start (view);
3723         else
3724                 ev_view_presentation_transition_stop (view);
3725
3726         if (GTK_WIDGET_REALIZED (view)) {
3727                 if (view->presentation)
3728                         gdk_window_set_background (GTK_WIDGET(view)->window,
3729                                                    &GTK_WIDGET (view)->style->black);
3730                 else
3731                         gdk_window_set_background (GTK_WIDGET(view)->window,
3732                                                    &GTK_WIDGET (view)->style->mid [GTK_STATE_NORMAL]);
3733         }
3734
3735         g_object_notify (G_OBJECT (view), "presentation");
3736 }
3737
3738 gboolean
3739 ev_view_get_presentation (EvView *view)
3740 {
3741         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
3742
3743         return view->presentation;
3744 }
3745
3746 static gboolean
3747 transition_next_page (EvView *view)
3748 {
3749         ev_view_next_page (view);
3750
3751         return FALSE;
3752 }
3753
3754 static void
3755 ev_view_presentation_transition_stop (EvView *view)
3756 {
3757         if (view->trans_timeout_id > 0)
3758                 g_source_remove (view->trans_timeout_id);
3759         view->trans_timeout_id = 0;
3760 }
3761
3762 static void
3763 ev_view_presentation_transition_start (EvView *view)
3764 {
3765         gdouble duration;
3766
3767         if (!EV_IS_DOCUMENT_TRANSITION (view->document))
3768                 return;
3769
3770         ev_view_presentation_transition_stop (view);
3771
3772         duration = ev_document_transition_get_page_duration (EV_DOCUMENT_TRANSITION (view->document),
3773                                                              view->current_page);
3774         if (duration > 0)
3775                 view->trans_timeout_id = g_timeout_add (duration * 1000,
3776                                                         (GSourceFunc) transition_next_page,
3777                                                         view);
3778 }
3779
3780 void
3781 ev_view_set_sizing_mode (EvView       *view,
3782                          EvSizingMode  sizing_mode)
3783 {
3784         g_return_if_fail (EV_IS_VIEW (view));
3785
3786         if (view->sizing_mode == sizing_mode)
3787                 return;
3788
3789         view->sizing_mode = sizing_mode;
3790         gtk_widget_queue_resize (GTK_WIDGET (view));
3791
3792         g_object_notify (G_OBJECT (view), "sizing-mode");
3793 }
3794
3795 EvSizingMode
3796 ev_view_get_sizing_mode (EvView *view)
3797 {
3798         g_return_val_if_fail (EV_IS_VIEW (view), EV_SIZING_FREE);
3799
3800         return view->sizing_mode;
3801 }
3802
3803 gboolean
3804 ev_view_can_zoom_in (EvView *view)
3805 {
3806         return view->scale * ZOOM_IN_FACTOR <= view->max_scale;
3807 }
3808
3809 gboolean
3810 ev_view_can_zoom_out (EvView *view)
3811 {
3812         return view->scale * ZOOM_OUT_FACTOR >= view->min_scale;
3813 }
3814
3815 void
3816 ev_view_zoom_in (EvView *view)
3817 {
3818         g_return_if_fail (view->sizing_mode == EV_SIZING_FREE);
3819
3820         if (view->presentation)
3821                 return;
3822
3823         view->pending_scroll = SCROLL_TO_CENTER;
3824         ev_view_set_zoom (view, ZOOM_IN_FACTOR, TRUE);
3825 }
3826
3827 void
3828 ev_view_zoom_out (EvView *view)
3829 {
3830         g_return_if_fail (view->sizing_mode == EV_SIZING_FREE);
3831
3832         if (view->presentation)
3833                 return;
3834
3835         view->pending_scroll = SCROLL_TO_CENTER;
3836         ev_view_set_zoom (view, ZOOM_OUT_FACTOR, TRUE);
3837 }
3838
3839 void
3840 ev_view_rotate_right (EvView *view)
3841 {
3842         int rotation = view->rotation + 90;
3843
3844         if (rotation >= 360) {
3845                 rotation -= 360;
3846         }
3847
3848         ev_view_set_rotation (view, rotation);
3849 }
3850
3851 void
3852 ev_view_rotate_left (EvView *view)
3853 {
3854         int rotation = view->rotation - 90;
3855
3856         if (rotation < 0) {
3857                 rotation += 360;
3858         }
3859
3860         ev_view_set_rotation (view, rotation);
3861 }
3862
3863 void
3864 ev_view_set_rotation (EvView *view, int rotation)
3865 {
3866         view->rotation = rotation;
3867
3868         if (view->pixbuf_cache) {
3869                 ev_pixbuf_cache_clear (view->pixbuf_cache);
3870                 gtk_widget_queue_resize (GTK_WIDGET (view));
3871         }
3872
3873         if (rotation != 0)
3874                 clear_selection (view);
3875
3876         g_object_notify (G_OBJECT (view), "rotation");
3877 }
3878
3879 int
3880 ev_view_get_rotation (EvView *view)
3881 {
3882         return view->rotation;
3883 }
3884
3885 static double
3886 zoom_for_size_fit_width (int doc_width,
3887                          int doc_height,
3888                          int target_width,
3889                          int target_height,
3890                          int vsb_width)
3891 {
3892         double scale;
3893
3894         scale = (double)target_width / doc_width;
3895
3896         if (doc_height * scale > target_height)
3897                 scale = (double) (target_width - vsb_width) / doc_width;
3898
3899         return scale;
3900 }
3901
3902 static double
3903 zoom_for_size_fit_height (int doc_width,
3904                           int doc_height,
3905                           int target_width,
3906                           int target_height,
3907                           int vsb_height)
3908 {
3909         double scale;
3910
3911         scale = (double)target_height / doc_height;
3912
3913         if (doc_width * scale > target_width)
3914                 scale = (double) (target_height - vsb_height) / doc_height;
3915
3916         return scale;
3917 }
3918
3919 static double
3920 zoom_for_size_best_fit (int doc_width,
3921                         int doc_height,
3922                         int target_width,
3923                         int target_height,
3924                         int vsb_width,
3925                         int hsb_width)
3926 {
3927         double w_scale;
3928         double h_scale;
3929
3930         w_scale = (double)target_width / doc_width;
3931         h_scale = (double)target_height / doc_height;
3932
3933         if (doc_height * w_scale > target_height)
3934                 w_scale = (double) (target_width - vsb_width) / doc_width;
3935         if (doc_width * h_scale > target_width)
3936                 h_scale = (double) (target_height - hsb_width) / doc_height;
3937
3938         return MIN (w_scale, h_scale);
3939 }
3940
3941
3942 static void
3943 ev_view_zoom_for_size_presentation (EvView *view,
3944                                     int     width,
3945                                     int     height)
3946 {
3947         int doc_width, doc_height;
3948         gdouble scale;
3949
3950         ev_page_cache_get_size (view->page_cache,
3951                                 view->current_page,
3952                                 view->rotation,
3953                                 1.0,
3954                                 &doc_width,
3955                                 &doc_height);
3956         scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, 0, 0);
3957         ev_view_set_zoom (view, scale, FALSE);
3958 }
3959
3960 static void
3961 ev_view_zoom_for_size_continuous_and_dual_page (EvView *view,
3962                            int     width,
3963                            int     height,
3964                            int     vsb_width,
3965                            int     hsb_height)
3966 {
3967         int doc_width, doc_height;
3968         GtkBorder border;
3969         gdouble scale;
3970
3971         ev_page_cache_get_max_width (view->page_cache,
3972                                      view->rotation,
3973                                      1.0,
3974                                      &doc_width);
3975         ev_page_cache_get_max_height (view->page_cache,
3976                                       view->rotation,
3977                                       1.0,
3978                                       &doc_height);
3979         compute_border (view, doc_width, doc_height, &border);
3980
3981         doc_width = doc_width * 2;
3982         width -= (2 * (border.left + border.right) + 3 * view->spacing);
3983         height -= (border.top + border.bottom + 2 * view->spacing - 1);
3984
3985         /* FIXME: We really need to calculate the overall height here, not the
3986          * page height.  We assume there's always a vertical scrollbar for
3987          * now.  We need to fix this. */
3988         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
3989                 scale = zoom_for_size_fit_width (doc_width, doc_height, width - vsb_width, height, 0);
3990         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
3991                 scale = zoom_for_size_best_fit (doc_width, doc_height, width - vsb_width, height, 0, hsb_height);
3992         else
3993                 g_assert_not_reached ();
3994
3995         ev_view_set_zoom (view, scale, FALSE);
3996 }
3997
3998 static void
3999 ev_view_zoom_for_size_continuous (EvView *view,
4000                                   int     width,
4001                                   int     height,
4002                                   int     vsb_width,
4003                                   int     hsb_height)
4004 {
4005         int doc_width, doc_height;
4006         GtkBorder border;
4007         gdouble scale;
4008
4009         ev_page_cache_get_max_width (view->page_cache,
4010                                      view->rotation,
4011                                      1.0,
4012                                      &doc_width);
4013         ev_page_cache_get_max_height (view->page_cache,
4014                                       view->rotation,
4015                                       1.0,
4016                                       &doc_height);
4017         compute_border (view, doc_width, doc_height, &border);
4018
4019         width -= (border.left + border.right + 2 * view->spacing);
4020         height -= (border.top + border.bottom + 2 * view->spacing - 1);
4021
4022         /* FIXME: We really need to calculate the overall height here, not the
4023          * page height.  We assume there's always a vertical scrollbar for
4024          * now.  We need to fix this. */
4025         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
4026                 scale = zoom_for_size_fit_width (doc_width, doc_height, width - vsb_width, height, 0);
4027         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
4028                 scale = zoom_for_size_best_fit (doc_width, doc_height, width - vsb_width, height, 0, hsb_height);
4029         else
4030                 g_assert_not_reached ();
4031
4032         ev_view_set_zoom (view, scale, FALSE);
4033 }
4034
4035 static void
4036 ev_view_zoom_for_size_dual_page (EvView *view,
4037                                  int     width,
4038                                  int     height,
4039                                  int     vsb_width,
4040                                  int     hsb_height)
4041 {
4042         GtkBorder border;
4043         gint doc_width, doc_height;
4044         gdouble scale;
4045         gint other_page;
4046
4047         other_page = view->current_page ^ 1;
4048
4049         /* Find the largest of the two. */
4050         ev_page_cache_get_size (view->page_cache,
4051                                 view->current_page,
4052                                 view->rotation,
4053                                 1.0,
4054                                 &doc_width, &doc_height);
4055
4056         if (other_page < ev_page_cache_get_n_pages (view->page_cache)) {
4057                 gint width_2, height_2;
4058                 ev_page_cache_get_size (view->page_cache,
4059                                         other_page,
4060                                         view->rotation,
4061                                         1.0,
4062                                         &width_2, &height_2);
4063                 if (width_2 > doc_width)
4064                         doc_width = width_2;
4065                 if (height_2 > doc_height)
4066                         doc_height = height_2;
4067         }
4068         compute_border (view, doc_width, doc_height, &border);
4069
4070         doc_width = doc_width * 2;
4071         width -= ((border.left + border.right)* 2 + 3 * view->spacing);
4072         height -= (border.top + border.bottom + 2 * view->spacing);
4073
4074         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
4075                 scale = zoom_for_size_fit_width (doc_width, doc_height, width, height, vsb_width);
4076         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
4077                 scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, vsb_width, hsb_height);
4078         else
4079                 g_assert_not_reached ();
4080
4081         ev_view_set_zoom (view, scale, FALSE);
4082 }
4083
4084 static void
4085 ev_view_zoom_for_size_single_page (EvView *view,
4086                                    int     width,
4087                                    int     height,
4088                                    int     vsb_width,
4089                                    int     hsb_height)
4090 {
4091         int doc_width, doc_height;
4092         GtkBorder border;
4093         gdouble scale;
4094
4095         ev_page_cache_get_size (view->page_cache,
4096                                 view->current_page,
4097                                 view->rotation,
4098                                 1.0,
4099                                 &doc_width,
4100                                 &doc_height);
4101         /* Get an approximate border */
4102         compute_border (view, width, height, &border);
4103
4104         width -= (border.left + border.right + 2 * view->spacing);
4105         height -= (border.top + border.bottom + 2 * view->spacing);
4106
4107         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
4108                 scale = zoom_for_size_fit_width (doc_width, doc_height, width, height, vsb_width);
4109         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
4110                 scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, vsb_width, hsb_height);
4111         else
4112                 g_assert_not_reached ();
4113
4114         ev_view_set_zoom (view, scale, FALSE);
4115 }
4116
4117 void
4118 ev_view_set_zoom_for_size (EvView *view,
4119                            int     width,
4120                            int     height,
4121                            int     vsb_width,
4122                            int     hsb_height)
4123 {
4124         g_return_if_fail (view->sizing_mode == EV_SIZING_FIT_WIDTH ||
4125                           view->sizing_mode == EV_SIZING_BEST_FIT);
4126         g_return_if_fail (width >= 0);
4127         g_return_if_fail (height >= 0);
4128
4129         if (view->document == NULL)
4130                 return;
4131
4132         if (view->presentation)
4133                 ev_view_zoom_for_size_presentation (view, width, height);
4134         else if (view->continuous && view->dual_page)
4135                 ev_view_zoom_for_size_continuous_and_dual_page (view, width, height, vsb_width, hsb_height);
4136         else if (view->continuous)
4137                 ev_view_zoom_for_size_continuous (view, width, height, vsb_width, hsb_height);
4138         else if (view->dual_page)
4139                 ev_view_zoom_for_size_dual_page (view, width, height, vsb_width, hsb_height);
4140         else
4141                 ev_view_zoom_for_size_single_page (view, width, height, vsb_width, hsb_height);
4142 }
4143
4144 /*** Status text messages ***/
4145
4146 const char *
4147 ev_view_get_status (EvView *view)
4148 {
4149         g_return_val_if_fail (EV_IS_VIEW (view), NULL);
4150
4151         return view->status;
4152 }
4153
4154 static void
4155 ev_view_set_status (EvView *view, const char *message)
4156 {
4157         g_return_if_fail (EV_IS_VIEW (view));
4158
4159         if (message != view->status) {
4160                 g_free (view->status);
4161                 view->status = g_strdup (message);
4162                 g_object_notify (G_OBJECT (view), "status");
4163         }
4164 }
4165
4166 static void
4167 update_find_status_message (EvView *view, gboolean this_page)
4168 {
4169         char *message;
4170
4171         if (this_page) {
4172                 int results;
4173
4174                 results = ev_document_find_get_n_results
4175                                 (EV_DOCUMENT_FIND (view->document),
4176                                  view->current_page);
4177                 /* TRANS: Sometimes this could be better translated as
4178                    "%d hit(s) on this page".  Therefore this string
4179                    contains plural cases. */
4180                 message = g_strdup_printf (ngettext ("%d found on this page",
4181                                                      "%d found on this page",
4182                                                      results),
4183                                            results);
4184         } else {
4185                 double percent;
4186
4187                 percent = ev_document_find_get_progress
4188                                 (EV_DOCUMENT_FIND (view->document));
4189                 message = g_strdup_printf (_("%3d%% remaining to search"),
4190                                            (int) ((1.0 - percent) * 100));
4191
4192         }
4193         ev_view_set_find_status (view, message);
4194         g_free (message);
4195 }
4196
4197 const char *
4198 ev_view_get_find_status (EvView *view)
4199 {
4200         g_return_val_if_fail (EV_IS_VIEW (view), NULL);
4201
4202         return view->find_status;
4203 }
4204
4205 static void
4206 ev_view_set_find_status (EvView *view, const char *message)
4207 {
4208         g_return_if_fail (EV_IS_VIEW (view));
4209
4210         g_free (view->find_status);
4211         view->find_status = g_strdup (message);
4212         g_object_notify (G_OBJECT (view), "find-status");
4213 }
4214
4215 /*** Find ***/
4216
4217 static void
4218 jump_to_find_result (EvView *view)
4219 {
4220         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
4221         EvRectangle rect;
4222         GdkRectangle view_rect;
4223         int n_results;
4224         int page = view->current_page;
4225
4226         n_results = ev_document_find_get_n_results (find, page);
4227
4228         if (n_results > 0  && view->find_result < n_results) {
4229                 ev_document_find_get_result
4230                         (find, page, view->find_result, &rect);
4231
4232                 doc_rect_to_view_rect (view, page, &rect, &view_rect);
4233                 ensure_rectangle_is_visible (view, &view_rect);
4234         }
4235 }
4236
4237 /**
4238  * jump_to_find_page
4239  * @view: #EvView instance
4240  * @direction: Direction to look
4241  * @shift: Shift from current page
4242  *
4243  * Jumps to the first page that has occurences of searched word.
4244  * Uses a direction where to look and a shift from current page.
4245  *
4246  */
4247 static void
4248 jump_to_find_page (EvView *view, EvViewFindDirection direction, gint shift)
4249 {
4250         int n_pages, i;
4251
4252         n_pages = ev_page_cache_get_n_pages (view->page_cache);
4253
4254         for (i = 0; i < n_pages; i++) {
4255                 int has_results;
4256                 int page;
4257
4258                 if (direction == EV_VIEW_FIND_NEXT)
4259                         page = view->current_page + i;
4260                 else
4261                         page = view->current_page - i;
4262                 page += shift;
4263
4264                 if (page >= n_pages) {
4265                         page = page - n_pages;
4266                 }
4267                 if (page < 0)
4268                         page = page + n_pages;
4269
4270                 has_results = ev_document_find_page_has_results
4271                                 (EV_DOCUMENT_FIND (view->document), page);
4272                 if (has_results == -1) {
4273                         break;
4274                 } else if (has_results == 1) {
4275                         ev_page_cache_set_current_page (view->page_cache, page);
4276                         break;
4277                 }
4278         }
4279 }
4280
4281 gboolean
4282 ev_view_can_find_next (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 = 0; i < n_pages; i++) {
4290                         if (ev_document_find_get_n_results (find, i) > 0) {
4291                                 return TRUE;
4292                         }
4293                 }
4294         }
4295
4296         return FALSE;
4297 }
4298
4299 void
4300 ev_view_find_next (EvView *view)
4301 {
4302         int n_results, n_pages;
4303         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
4304
4305         n_results = ev_document_find_get_n_results (find, view->current_page);
4306
4307         n_pages = ev_page_cache_get_n_pages (view->page_cache);
4308
4309         view->find_result++;
4310
4311         if (view->find_result >= n_results) {
4312
4313                 view->find_result = 0;
4314                 jump_to_find_page (view, EV_VIEW_FIND_NEXT, 1);
4315                 jump_to_find_result (view);
4316         } else {
4317                 jump_to_find_result (view);
4318                 gtk_widget_queue_draw (GTK_WIDGET (view));
4319         }
4320 }
4321
4322 gboolean
4323 ev_view_can_find_previous (EvView *view)
4324 {
4325         if (EV_IS_DOCUMENT_FIND (view->document)) {
4326                 EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
4327                 int i, n_pages;
4328
4329                 n_pages = ev_page_cache_get_n_pages (view->page_cache);
4330                 for (i = n_pages - 1; i >= 0; i--) {
4331                         if (ev_document_find_get_n_results (find, i) > 0) {
4332                                 return TRUE;
4333                         }
4334                 }
4335         }
4336
4337         return FALSE;
4338 }
4339 void
4340 ev_view_find_previous (EvView *view)
4341 {
4342         int n_results, n_pages;
4343         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
4344         EvPageCache *page_cache;
4345
4346         page_cache = ev_page_cache_get (view->document);
4347
4348         n_results = ev_document_find_get_n_results (find, view->current_page);
4349
4350         n_pages = ev_page_cache_get_n_pages (page_cache);
4351
4352         view->find_result--;
4353
4354         if (view->find_result < 0) {
4355
4356                 jump_to_find_page (view, EV_VIEW_FIND_PREV, -1);
4357                 view->find_result = ev_document_find_get_n_results (find, view->current_page) - 1;
4358                 jump_to_find_result (view);
4359         } else {
4360                 jump_to_find_result (view);
4361                 gtk_widget_queue_draw (GTK_WIDGET (view));
4362         }
4363 }
4364
4365 void ev_view_search_changed (EvView *view)
4366 {
4367         /* search string has changed, focus on new search result */
4368         view->jump_to_find_result = TRUE;
4369 }
4370
4371 /*** Selections ***/
4372
4373 /* compute_new_selection_rect/text calculates the area currently selected by
4374  * view_rect.  each handles a different mode;
4375  */
4376 static GList *
4377 compute_new_selection_rect (EvView       *view,
4378                             GdkPoint     *start,
4379                             GdkPoint     *stop)
4380 {
4381         GdkRectangle view_rect;
4382         int n_pages, i;
4383         GList *list = NULL;
4384
4385         g_assert (view->selection_mode == EV_VIEW_SELECTION_RECTANGLE);
4386
4387         view_rect.x = MIN (start->x, stop->x);
4388         view_rect.y = MIN (start->y, stop->y);
4389         view_rect.width = MAX (start->x, stop->x) - view_rect.x;
4390         view_rect.width = MAX (start->y, stop->y) - view_rect.y;
4391
4392         n_pages = ev_page_cache_get_n_pages (view->page_cache);
4393
4394         for (i = 0; i < n_pages; i++) {
4395                 GdkRectangle page_area;
4396                 GtkBorder border;
4397
4398                 if (get_page_extents (view, i, &page_area, &border)) {
4399                         GdkRectangle overlap;
4400
4401                         if (gdk_rectangle_intersect (&page_area, &view_rect, &overlap)) {
4402                                 EvViewSelection *selection;
4403
4404                                 selection = g_new0 (EvViewSelection, 1);
4405                                 selection->page = i;
4406                                 view_rect_to_doc_rect (view, &overlap, &page_area,
4407                                                        &(selection->rect));
4408
4409                                 list = g_list_append (list, selection);
4410                         }
4411                 }
4412         }
4413
4414         return list;
4415 }
4416
4417 static gboolean
4418 gdk_rectangle_point_in (GdkRectangle *rectangle,
4419                         GdkPoint     *point)
4420 {
4421         return rectangle->x <= point->x &&
4422                 rectangle->y <= point->y &&
4423                 point->x < rectangle->x + rectangle->width &&
4424                 point->y < rectangle->y + rectangle->height;
4425 }
4426
4427 static GList *
4428 compute_new_selection_text (EvView   *view,
4429                             GdkPoint *start,
4430                             GdkPoint *stop)
4431 {
4432         int n_pages, i, first, last;
4433         GList *list = NULL;
4434         EvViewSelection *selection;
4435         gint width, height;
4436         int start_page, end_page;
4437
4438         g_assert (view->selection_mode == EV_VIEW_SELECTION_TEXT);
4439
4440         n_pages = ev_page_cache_get_n_pages (view->page_cache);
4441
4442         /* First figure out the range of pages the selection
4443          * affects. */
4444         first = n_pages;
4445         last = 0;
4446         if (view->continuous) {
4447                 start_page = 0;
4448                 end_page = n_pages;
4449         } else if (view->dual_page) {
4450                 start_page = view->start_page;
4451                 end_page = view->end_page + 1;
4452         } else {
4453                 start_page = view->current_page;
4454                 end_page = view->current_page + 1;
4455         }
4456
4457         for (i = start_page; i < end_page; i++) {
4458                 GdkRectangle page_area;
4459                 GtkBorder border;
4460
4461                 get_page_extents (view, i, &page_area, &border);
4462                 if (gdk_rectangle_point_in (&page_area, start) ||
4463                     gdk_rectangle_point_in (&page_area, stop)) {
4464                         if (first == n_pages)
4465                                 first = i;
4466                         last = i;
4467                 }
4468
4469         }
4470
4471         /* Now create a list of EvViewSelection's for the affected
4472          * pages.  This could be an empty list, a list of just one
4473          * page or a number of pages.*/
4474         for (i = first; i < last + 1; i++) {
4475                 GdkRectangle page_area;
4476                 GtkBorder border;
4477                 GdkPoint *point;
4478
4479                 ev_page_cache_get_size (view->page_cache, i,
4480                                         view->rotation,
4481                                         1.0, &width, &height);
4482
4483                 selection = g_new0 (EvViewSelection, 1);
4484                 selection->page = i;
4485                 selection->rect.x1 = selection->rect.y1 = 0;
4486                 selection->rect.x2 = width;
4487                 selection->rect.y2 = height;
4488
4489                 get_page_extents (view, i, &page_area, &border);
4490
4491                 if (gdk_rectangle_point_in (&page_area, start))
4492                         point = start;
4493                 else
4494                         point = stop;
4495
4496                 if (i == first)
4497                         view_point_to_doc_point (view, point, &page_area,
4498                                                  &selection->rect.x1,
4499                                                  &selection->rect.y1);
4500
4501                 /* If the selection is contained within just one page,
4502                  * make sure we don't write 'start' into both points
4503                  * in selection->rect. */
4504                 if (first == last)
4505                         point = stop;
4506
4507                 if (i == last)
4508                         view_point_to_doc_point (view, point, &page_area,
4509                                                  &selection->rect.x2,
4510                                                  &selection->rect.y2);
4511
4512                 list = g_list_append (list, selection);
4513         }
4514
4515         return list;
4516 }
4517
4518 /* This function takes the newly calculated list, and figures out which regions
4519  * have changed.  It then queues a redraw approporiately.
4520  */
4521 static void
4522 merge_selection_region (EvView *view,
4523                         GList  *new_list)
4524 {
4525         GList *old_list;
4526         GList *new_list_ptr, *old_list_ptr;
4527
4528         /* Update the selection */
4529         old_list = ev_pixbuf_cache_get_selection_list (view->pixbuf_cache);
4530         g_list_foreach (view->selection_info.selections, (GFunc)selection_free, NULL);
4531         view->selection_info.selections = new_list;
4532         ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, new_list);
4533         g_object_notify (G_OBJECT (view), "has-selection");
4534
4535         new_list_ptr = new_list;
4536         old_list_ptr = old_list;
4537
4538         while (new_list_ptr || old_list_ptr) {
4539                 EvViewSelection *old_sel, *new_sel;
4540                 int cur_page;
4541                 GdkRegion *region = NULL;
4542
4543                 new_sel = (new_list_ptr) ? (new_list_ptr->data) : NULL;
4544                 old_sel = (old_list_ptr) ? (old_list_ptr->data) : NULL;
4545
4546                 /* Assume that the lists are in order, and we run through them
4547                  * comparing them, one page at a time.  We come out with the
4548                  * first page we see. */
4549                 if (new_sel && old_sel) {
4550                         if (new_sel->page < old_sel->page) {
4551                                 new_list_ptr = new_list_ptr->next;
4552                                 old_sel = NULL;
4553                         } else if (new_sel->page > old_sel->page) {
4554                                 old_list_ptr = old_list_ptr->next;
4555                                 new_sel = NULL;
4556                         } else {
4557                                 new_list_ptr = new_list_ptr->next;
4558                                 old_list_ptr = old_list_ptr->next;
4559                         }
4560                 } else if (new_sel) {
4561                         new_list_ptr = new_list_ptr->next;
4562                 } else if (old_sel) {
4563                         old_list_ptr = old_list_ptr->next;
4564                 }
4565
4566                 g_assert (new_sel || old_sel);
4567
4568                 /* is the page we're looking at on the screen?*/
4569                 cur_page = new_sel ? new_sel->page : old_sel->page;
4570                 if (cur_page < view->start_page || cur_page > view->end_page)
4571                         continue;
4572
4573                 /* seed the cache with a new page.  We are going to need the new
4574                  * region too. */
4575                 if (new_sel) {
4576                         GdkRegion *tmp_region = NULL;
4577
4578                         ev_pixbuf_cache_get_selection_surface (view->pixbuf_cache,
4579                                                                cur_page,
4580                                                                view->scale,
4581                                                                &tmp_region);
4582
4583                         if (tmp_region) {
4584                                 new_sel->covered_region = gdk_region_copy (tmp_region);
4585                         }
4586                 }
4587
4588                 /* Now we figure out what needs redrawing */
4589                 if (old_sel && new_sel) {
4590                         if (old_sel->covered_region && new_sel->covered_region) {
4591                                 /* We only want to redraw the areas that have
4592                                  * changed, so we xor the old and new regions
4593                                  * and redraw if it's different */
4594                                 region = gdk_region_copy (old_sel->covered_region);
4595                                 gdk_region_xor (region, new_sel->covered_region);
4596                                 if (gdk_region_empty (region)) {
4597                                         gdk_region_destroy (region);
4598                                         region = NULL;
4599                                 }
4600                         } else if (old_sel->covered_region) {
4601                                 region = gdk_region_copy (old_sel->covered_region);
4602                         } else if (new_sel->covered_region) {
4603                                 region = gdk_region_copy (new_sel->covered_region);
4604                         }
4605                 } else if (old_sel && !new_sel) {
4606                         if (old_sel->covered_region && !gdk_region_empty (old_sel->covered_region)) {
4607                                 region = gdk_region_copy (old_sel->covered_region);
4608                         }
4609                 } else if (!old_sel && new_sel) {
4610                         if (new_sel->covered_region && !gdk_region_empty (new_sel->covered_region)) {
4611                                 region = gdk_region_copy (new_sel->covered_region);
4612                         }
4613                 } else {
4614                         g_assert_not_reached ();
4615                 }
4616
4617                 /* Redraw the damaged region! */
4618                 if (region) {
4619                         GdkRectangle page_area;
4620                         GtkBorder border;
4621
4622                         /* I don't know why but the region is smaller
4623                          * than expected. This hack fixes it, I guess
4624                          * 10 pixels more won't hurt
4625                          */
4626                         gdk_region_shrink (region, -5, -5);
4627
4628                         get_page_extents (view, cur_page, &page_area, &border);
4629                         gdk_region_offset (region,
4630                                            page_area.x + border.left - view->scroll_x,
4631                                            page_area.y + border.top - view->scroll_y);
4632                         gdk_window_invalidate_region (GTK_WIDGET (view)->window, region, TRUE);
4633                         gdk_region_destroy (region);
4634                 }
4635         }
4636
4637         /* Free the old list, now that we're done with it. */
4638         g_list_foreach (old_list, (GFunc) selection_free, NULL);
4639 }
4640
4641 static void
4642 compute_selections (EvView   *view,
4643                     GdkPoint *start,
4644                     GdkPoint *stop)
4645 {
4646         GList *list;
4647
4648         if (view->selection_mode == EV_VIEW_SELECTION_RECTANGLE)
4649                 list = compute_new_selection_rect (view, start, stop);
4650         else
4651                 list = compute_new_selection_text (view, start, stop);
4652         merge_selection_region (view, list);
4653 }
4654
4655 /* Free's the selection.  It's up to the caller to queue redraws if needed.
4656  */
4657 static void
4658 selection_free (EvViewSelection *selection)
4659 {
4660         if (selection->covered_region)
4661                 gdk_region_destroy (selection->covered_region);
4662         g_free (selection);
4663 }
4664
4665 static void
4666 clear_selection (EvView *view)
4667 {
4668         g_list_foreach (view->selection_info.selections, (GFunc)selection_free, NULL);
4669         view->selection_info.selections = NULL;
4670         view->selection_info.in_selection = FALSE;
4671         if (view->pixbuf_cache)
4672                 ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, NULL);
4673         g_object_notify (G_OBJECT (view), "has-selection");
4674 }
4675
4676
4677 void
4678 ev_view_select_all (EvView *view)
4679 {
4680         int n_pages, i;
4681
4682         /* Disable selection on rotated pages for the 0.4.0 series */
4683         if (view->rotation != 0)
4684                 return;
4685
4686         clear_selection (view);
4687
4688         n_pages = ev_page_cache_get_n_pages (view->page_cache);
4689         for (i = 0; i < n_pages; i++) {
4690                 int width, height;
4691                 EvViewSelection *selection;
4692
4693                 ev_page_cache_get_size (view->page_cache,
4694                                         i,
4695                                         view->rotation,
4696                                         1.0, &width, &height);
4697
4698                 selection = g_new0 (EvViewSelection, 1);
4699                 selection->page = i;
4700                 selection->rect.x1 = selection->rect.y1 = 0;
4701                 selection->rect.x2 = width;
4702                 selection->rect.y2 = height;
4703
4704                 view->selection_info.selections = g_list_append (view->selection_info.selections, selection);
4705         }
4706
4707         ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, view->selection_info.selections);
4708         g_object_notify (G_OBJECT (view), "has-selection");
4709         gtk_widget_queue_draw (GTK_WIDGET (view));
4710 }
4711
4712 gboolean
4713 ev_view_get_has_selection (EvView *view)
4714 {
4715         return view->selection_info.selections != NULL;
4716 }
4717
4718 static char *
4719 get_selected_text (EvView *ev_view)
4720 {
4721         GString *text;
4722         GList *l;
4723         gchar *normalized_text;
4724
4725         text = g_string_new (NULL);
4726
4727         ev_document_doc_mutex_lock ();
4728
4729         for (l = ev_view->selection_info.selections; l != NULL; l = l->next) {
4730                 EvViewSelection *selection = (EvViewSelection *)l->data;
4731                 char *tmp;
4732
4733                 tmp = ev_document_get_text (ev_view->document,
4734                                             selection->page,
4735                                             &selection->rect);
4736                 g_string_append (text, tmp);
4737                 g_free (tmp);
4738         }
4739
4740         ev_document_doc_mutex_unlock ();
4741
4742         normalized_text = g_utf8_normalize (text->str, text->len, G_NORMALIZE_NFKC);
4743         g_string_free (text, TRUE);
4744         return normalized_text;
4745 }
4746
4747 void
4748 ev_view_copy (EvView *ev_view)
4749 {
4750         GtkClipboard *clipboard;
4751         char *text;
4752
4753         if (!ev_document_can_get_text (ev_view->document)) {
4754                 return;
4755         }
4756
4757         text = get_selected_text (ev_view);
4758         clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view),
4759                                               GDK_SELECTION_CLIPBOARD);
4760         gtk_clipboard_set_text (clipboard, text, -1);
4761         g_free (text);
4762 }
4763
4764 static void
4765 ev_view_primary_get_cb (GtkClipboard     *clipboard,
4766                         GtkSelectionData *selection_data,
4767                         guint             info,
4768                         gpointer          data)
4769 {
4770         EvView *ev_view = EV_VIEW (data);
4771         char *text;
4772
4773         if (!ev_document_can_get_text (ev_view->document)) {
4774                 return;
4775         }
4776
4777         text = get_selected_text (ev_view);
4778         if (text) {
4779                 gtk_selection_data_set_text (selection_data, text, -1);
4780                 g_free (text);
4781         }
4782 }
4783
4784 static void
4785 ev_view_primary_clear_cb (GtkClipboard *clipboard,
4786                           gpointer      data)
4787 {
4788         EvView *view = EV_VIEW (data);
4789
4790         clear_selection (view);
4791 }
4792
4793 static void
4794 ev_view_update_primary_selection (EvView *ev_view)
4795 {
4796         GtkClipboard *clipboard;
4797
4798         clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view),
4799                                               GDK_SELECTION_PRIMARY);
4800
4801         if (ev_view->selection_info.selections) {
4802                 if (!gtk_clipboard_set_with_owner (clipboard,
4803                                                    clipboard_targets,
4804                                                    G_N_ELEMENTS (clipboard_targets),
4805                                                    ev_view_primary_get_cb,
4806                                                    ev_view_primary_clear_cb,
4807                                                    G_OBJECT (ev_view)))
4808                         ev_view_primary_clear_cb (clipboard, ev_view);
4809         } else {
4810                 if (gtk_clipboard_get_owner (clipboard) == G_OBJECT (ev_view))
4811                         gtk_clipboard_clear (clipboard);
4812         }
4813 }
4814
4815 /*** Cursor operations ***/
4816
4817 static GdkCursor *
4818 ev_view_create_invisible_cursor(void)
4819 {
4820        GdkBitmap *empty;
4821        GdkColor black = { 0, 0, 0, 0 };
4822        static char bits[] = { 0x00 };
4823
4824        empty = gdk_bitmap_create_from_data (NULL, bits, 1, 1);
4825
4826        return gdk_cursor_new_from_pixmap (empty, empty, &black, &black, 0, 0);
4827 }
4828
4829 static void
4830 ev_view_set_cursor (EvView *view, EvViewCursor new_cursor)
4831 {
4832         GdkCursor *cursor = NULL;
4833         GdkDisplay *display;
4834         GtkWidget *widget;
4835
4836         if (view->cursor == new_cursor) {
4837                 return;
4838         }
4839
4840         widget = gtk_widget_get_toplevel (GTK_WIDGET (view));
4841         display = gtk_widget_get_display (widget);
4842         view->cursor = new_cursor;
4843
4844         switch (new_cursor) {
4845                 case EV_VIEW_CURSOR_NORMAL:
4846                         gdk_window_set_cursor (widget->window, NULL);
4847                         break;
4848                 case EV_VIEW_CURSOR_IBEAM:
4849                         cursor = gdk_cursor_new_for_display (display, GDK_XTERM);
4850                         break;
4851                 case EV_VIEW_CURSOR_LINK:
4852                         cursor = gdk_cursor_new_for_display (display, GDK_HAND2);
4853                         break;
4854                 case EV_VIEW_CURSOR_WAIT:
4855                         cursor = gdk_cursor_new_for_display (display, GDK_WATCH);
4856                         break;
4857                 case EV_VIEW_CURSOR_HIDDEN:
4858                         cursor = ev_view_create_invisible_cursor ();
4859                         break;
4860                 case EV_VIEW_CURSOR_DRAG:
4861                         cursor = gdk_cursor_new_for_display (display, GDK_FLEUR);
4862                         break;
4863         }
4864
4865         if (cursor) {
4866                 gdk_window_set_cursor (widget->window, cursor);
4867                 gdk_cursor_unref (cursor);
4868                 gdk_flush();
4869         }
4870 }
4871
4872 void
4873 ev_view_hide_cursor (EvView *view)
4874 {
4875        ev_view_set_cursor (view, EV_VIEW_CURSOR_HIDDEN);
4876 }
4877
4878 void
4879 ev_view_show_cursor (EvView *view)
4880 {
4881        ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
4882 }
4883
4884 static void
4885 ev_view_reset_presentation_state (EvView *view)
4886 {
4887         if (!view->presentation ||
4888             view->presentation_state == EV_PRESENTATION_NORMAL)
4889                 return;
4890
4891         view->presentation_state = EV_PRESENTATION_NORMAL;
4892         gdk_window_set_background (GTK_WIDGET (view)->window,
4893                                    &GTK_WIDGET (view)->style->black);
4894         gtk_widget_queue_draw (GTK_WIDGET (view));
4895 }
4896
4897 gboolean
4898 ev_view_next_page (EvView *view)
4899 {
4900         int page, n_pages;
4901
4902         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
4903
4904         if (!view->page_cache)
4905                 return FALSE;
4906
4907         if (view->presentation &&
4908             (view->presentation_state == EV_PRESENTATION_BLACK ||
4909              view->presentation_state == EV_PRESENTATION_WHITE)) {
4910                 ev_view_reset_presentation_state (view);
4911                 return FALSE;
4912         }
4913
4914         ev_view_presentation_transition_stop (view);
4915         ev_view_reset_presentation_state (view);
4916
4917         page = ev_page_cache_get_current_page (view->page_cache);
4918         n_pages = ev_page_cache_get_n_pages (view->page_cache);
4919
4920         if (view->dual_page && !view->presentation)
4921                 page = page + 2;
4922         else
4923                 page = page + 1;
4924
4925         if (page < n_pages) {
4926                 ev_page_cache_set_current_page (view->page_cache, page);
4927                 return TRUE;
4928         } else if (view->presentation && page == n_pages) {
4929                 view->presentation_state = EV_PRESENTATION_END;
4930                 gtk_widget_queue_draw (GTK_WIDGET (view));
4931                 return TRUE;
4932         } else if (view->dual_page && page == n_pages) {
4933                 ev_page_cache_set_current_page (view->page_cache, page - 1);
4934                 return TRUE;
4935         } else {
4936                 return FALSE;
4937         }
4938 }
4939
4940 gboolean
4941 ev_view_previous_page (EvView *view)
4942 {
4943         int page;
4944
4945         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
4946
4947         if (!view->page_cache)
4948                 return FALSE;
4949
4950         if (view->presentation &&
4951             view->presentation_state == EV_PRESENTATION_END) {
4952                 ev_view_reset_presentation_state (view);
4953                 return TRUE;
4954         }
4955
4956         if (view->presentation &&
4957             (view->presentation_state == EV_PRESENTATION_BLACK ||
4958              view->presentation_state == EV_PRESENTATION_WHITE)) {
4959                 ev_view_reset_presentation_state (view);
4960                 return FALSE;
4961         }
4962
4963         ev_view_reset_presentation_state (view);
4964
4965         page = ev_page_cache_get_current_page (view->page_cache);
4966
4967         if (view->dual_page && !view->presentation)
4968                 page = page - 2;
4969         else
4970                 page = page - 1;
4971
4972         if (page >= 0) {
4973                 ev_page_cache_set_current_page (view->page_cache, page);
4974                 return TRUE;
4975         } else if (ev_view_get_dual_page (view) && page == -1) {
4976                 ev_page_cache_set_current_page (view->page_cache, 0);
4977                 return TRUE;
4978         } else {
4979                 return FALSE;
4980         }
4981 }
4982
4983 /*** Enum description for usage in signal ***/
4984
4985 GType
4986 ev_sizing_mode_get_type (void)
4987 {
4988   static GType etype = 0;
4989   if (etype == 0) {
4990     static const GEnumValue values[] = {
4991       { EV_SIZING_FIT_WIDTH, "EV_SIZING_FIT_WIDTH", "fit-width" },
4992       { EV_SIZING_BEST_FIT, "EV_SIZING_BEST_FIT", "best-fit" },
4993       { EV_SIZING_FREE, "EV_SIZING_FREE", "free" },
4994       { 0, NULL, NULL }
4995     };
4996     etype = g_enum_register_static ("EvSizingMode", values);
4997   }
4998   return etype;
4999 }
5000
5001 GType
5002 ev_scroll_type_get_type (void)
5003 {
5004   static GType etype = 0;
5005   if (etype == 0) {
5006     static const GEnumValue values[] = {
5007       { EV_SCROLL_PAGE_FORWARD, "EV_SCROLL_PAGE_FORWARD", "scroll-page-forward" },
5008       { EV_SCROLL_PAGE_BACKWARD, "EV_SCROLL_PAGE_BACKWARD", "scroll-page-backward" },
5009       { EV_SCROLL_STEP_FORWARD, "EV_SCROLL_STEP_FORWARD", "scroll-step-forward" },
5010       { EV_SCROLL_STEP_FORWARD, "EV_SCROLL_STEP_FORWARD", "scroll-step-forward" },
5011       { EV_SCROLL_STEP_UP, "EV_SCROLL_STEP_UP", "scroll-step-up" },
5012       { EV_SCROLL_STEP_DOWN, "EV_SCROLL_STEP_DOWN", "scroll-step-down" },
5013       { 0, NULL, NULL }
5014     };
5015     etype = g_enum_register_static ("EvScrollType", values);
5016   }
5017   return etype;
5018 }