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