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