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 <gtk/gtkalignment.h>
  23 #include <glib/gi18n.h>
  24 #include <gtk/gtkbindings.h>
  25 #include <gtk/gtkselection.h>
  26 #include <gtk/gtkclipboard.h>
  27 #include <gdk/gdkkeysyms.h>
  28 #include <libgnomevfs/gnome-vfs-utils.h>
  29
  30 #include "ev-marshal.h"
  31 #include "ev-view.h"
  32 #include "ev-document-find.h"
  33 #include "ev-document-misc.h"
  34 #include "ev-debug.h"
  35 #include "ev-job-queue.h"
  36 #include "ev-page-cache.h"
  37 #include "ev-pixbuf-cache.h"
  38
  39 #define EV_VIEW_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass), EV_TYPE_VIEW, EvViewClass))
  40 #define EV_IS_VIEW_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), EV_TYPE_VIEW))
  41 #define EV_VIEW_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj), EV_TYPE_VIEW, EvViewClass))
  42
  43 enum {
  44         PROP_0,
  45         PROP_STATUS,
  46         PROP_FIND_STATUS,
  47         PROP_CONTINUOUS,
  48         PROP_DUAL_PAGE,
  49         PROP_FULLSCREEN,
  50         PROP_PRESENTATION,
  51         PROP_SIZING_MODE,
  52 };
  53
  54 enum {
  55         SIGNAL_SCROLL_VIEW,
  56         SIGNAL_ZOOM_INVALID,
  57         N_SIGNALS,
  58 };
  59
  60 enum {
  61         TARGET_STRING,
  62         TARGET_TEXT,
  63         TARGET_COMPOUND_TEXT,
  64         TARGET_UTF8_STRING,
  65         TARGET_TEXT_BUFFER_CONTENTS
  66 };
  67
  68 static const GtkTargetEntry targets[] = {
  69         { "STRING", 0, TARGET_STRING },
  70         { "TEXT",   0, TARGET_TEXT },
  71         { "COMPOUND_TEXT", 0, TARGET_COMPOUND_TEXT },
  72         { "UTF8_STRING", 0, TARGET_UTF8_STRING },
  73 };
  74
  75 static guint signals[N_SIGNALS];
  76
  77 typedef enum {
  78         EV_VIEW_CURSOR_NORMAL,
  79         EV_VIEW_CURSOR_LINK,
  80         EV_VIEW_CURSOR_WAIT,
  81         EV_VIEW_CURSOR_HIDDEN,
  82         EV_VIEW_CURSOR_DRAG
  83 } EvViewCursor;
  84
  85 #define ZOOM_IN_FACTOR  1.2
  86 #define ZOOM_OUT_FACTOR (1.0/ZOOM_IN_FACTOR)
  87
  88 #define MIN_SCALE 0.05409
  89 #define MAX_SCALE 6.0
  90
  91 typedef struct {
  92         EvRectangle rect;
  93         int page;
  94 } EvViewSelection;
  95
  96 typedef struct {
  97         gboolean dragging;
  98         GdkPoint start;
  99         gdouble hadj;
 100         gdouble vadj;
 101 } DragInfo;
 102
 103 typedef enum {
 104         SCROLL_TO_KEEP_POSITION,
 105         SCROLL_TO_CURRENT_PAGE,
 106         SCROLL_TO_CENTER
 107 } PendingScroll;
 108
 109 struct _EvView {
 110         GtkWidget parent_instance;
 111
 112         EvDocument *document;
 113
 114         char *status;
 115         char *find_status;
 116
 117         int scroll_x;
 118         int scroll_y;
 119
 120         DragInfo drag_info;
 121         gboolean pressed_button;
 122         GdkPoint selection_start;
 123         GList *selections;
 124         EvViewCursor cursor;
 125
 126         GtkAdjustment *hadjustment;
 127         GtkAdjustment *vadjustment;
 128
 129         EvPageCache *page_cache;
 130         EvPixbufCache *pixbuf_cache;
 131
 132         gint start_page;
 133         gint end_page;
 134         gint current_page;
 135
 136         EvJobRender *current_job;
 137
 138         int find_page;
 139         int find_result;
 140         int spacing;
 141
 142         double scale;
 143         GtkBorder border;
 144
 145         gboolean continuous;
 146         gboolean dual_page;
 147         gboolean fullscreen;
 148         gboolean presentation;
 149         EvSizingMode sizing_mode;
 150
 151         PendingScroll pending_scroll;
 152 };
 153
 154 struct _EvViewClass {
 155         GtkWidgetClass parent_class;
 156
 157         void    (*set_scroll_adjustments) (EvView         *view,
 158                                            GtkAdjustment  *hadjustment,
 159                                            GtkAdjustment  *vadjustment);
 160         void    (*scroll_view)            (EvView         *view,
 161                                            GtkScrollType   scroll,
 162                                            gboolean        horizontal);
 163         void    (*zoom_invalid)           (EvView         *view);
 164 };
 165
 166 /*** Scrolling ***/
 167 static void       view_update_adjustments                    (EvView             *view);
 168 static void       ev_view_set_scroll_adjustments             (EvView             *view,
 169                                                               GtkAdjustment      *hadjustment,
 170                                                               GtkAdjustment      *vadjustment);
 171 static void       view_update_range_and_current_page         (EvView             *view);
 172 static void       view_scroll_to_page                        (EvView             *view,
 173                                                               gint                new_page);
 174 static void       set_scroll_adjustment                      (EvView             *view,
 175                                                               GtkOrientation      orientation,
 176                                                               GtkAdjustment      *adjustment);
 177 static void       ev_view_set_scroll_adjustments             (EvView             *view,
 178                                                               GtkAdjustment      *hadjustment,
 179                                                               GtkAdjustment      *vadjustment);
 180 static void       add_scroll_binding_keypad                  (GtkBindingSet      *binding_set,
 181                                                               guint               keyval,
 182                                                               GtkScrollType       scroll,
 183                                                               gboolean            horizontal);
 184 static void       ev_view_scroll_view                        (EvView             *view,
 185                                                               GtkScrollType       scroll,
 186                                                               gboolean            horizontal);
 187 static void       ensure_rectangle_is_visible                (EvView             *view,
 188                                                               GdkRectangle       *rect);
 189
 190 /*** Geometry computations ***/
 191 static void       compute_border                             (EvView             *view,
 192                                                               int                 width,
 193                                                               int                 height,
 194                                                               GtkBorder          *border);
 195 static gboolean   get_page_extents                           (EvView             *view,
 196                                                               gint                page,
 197                                                               GdkRectangle       *page_area,
 198                                                               GtkBorder          *border);
 199 static void       view_rect_to_doc_rect                      (EvView             *view,
 200                                                               GdkRectangle       *view_rect,
 201                                                               GdkRectangle       *page_area,
 202                                                               EvRectangle        *doc_rect);
 203 static void       doc_rect_to_view_rect                      (EvView             *view,
 204                                                               int                 page,
 205                                                               EvRectangle        *doc_rect,
 206                                                               GdkRectangle       *view_rect);
 207 static void       get_bounding_box_size                      (EvView             *view,
 208                                                               int                *max_width,
 209                                                               int                *max_height);
 210 static void       find_page_at_location                      (EvView             *view,
 211                                                               gdouble             x,
 212                                                               gdouble             y,
 213                                                               gint               *page,
 214                                                               gint               *x_offset,
 215                                                               gint               *y_offset);
 216
 217 /*** Hyperrefs ***/
 218 static EvLink*    get_link_at_location                       (EvView             *view,
 219                                                               gdouble             x,
 220                                                               gdouble             y);
 221 static void       go_to_link                                 (EvView             *view,
 222                                                               EvLink             *link);
 223 static char*      status_message_from_link                   (EvView             *view,
 224                                                               EvLink             *link);
 225
 226 /*** GtkWidget implementation ***/
 227 static void       ev_view_size_request_continuous_dual_page  (EvView             *view,
 228                                                               GtkRequisition     *requisition);
 229 static void       ev_view_size_request_continuous            (EvView             *view,
 230                                                               GtkRequisition     *requisition);
 231 static void       ev_view_size_request_dual_page             (EvView             *view,
 232                                                               GtkRequisition     *requisition);
 233 static void       ev_view_size_request_single_page           (EvView             *view,
 234                                                               GtkRequisition     *requisition);
 235 static void       ev_view_size_request                       (GtkWidget          *widget,
 236                                                               GtkRequisition     *requisition);
 237 static void       ev_view_size_allocate                      (GtkWidget          *widget,
 238                                                               GtkAllocation      *allocation);
 239 static void       ev_view_realize                            (GtkWidget          *widget);
 240 static void       ev_view_unrealize                          (GtkWidget          *widget);
 241 static gboolean   ev_view_scroll_event                       (GtkWidget          *widget,
 242                                                               GdkEventScroll     *event);
 243 static gboolean   ev_view_expose_event                       (GtkWidget          *widget,
 244                                                               GdkEventExpose     *event);
 245 static gboolean   ev_view_button_press_event                 (GtkWidget          *widget,
 246                                                               GdkEventButton     *event);
 247 static gboolean   ev_view_motion_notify_event                (GtkWidget          *widget,
 248                                                               GdkEventMotion     *event);
 249 static gboolean   ev_view_button_release_event               (GtkWidget          *widget,
 250                                                               GdkEventButton     *event);
 251
 252 /*** Drawing ***/
 253 static guint32    ev_gdk_color_to_rgb                        (const GdkColor     *color);
 254 static void       draw_rubberband                            (GtkWidget          *widget,
 255                                                               GdkWindow          *window,
 256                                                               const GdkRectangle *rect,
 257                                                               guchar              alpha);
 258 static void       highlight_find_results                     (EvView             *view,
 259                                                               int                 page);
 260 static void       draw_one_page                              (EvView             *view,
 261                                                               gint                page,
 262                                                               GdkRectangle       *page_area,
 263                                                               GtkBorder          *border,
 264                                                               GdkRectangle       *expose_area);
 265
 266 /*** Callbacks ***/
 267 static void       find_changed_cb                            (EvDocument         *document,
 268                                                               int                 page,
 269                                                               EvView             *view);
 270 static void       job_finished_cb                            (EvPixbufCache      *pixbuf_cache,
 271                                                               EvView             *view);
 272 static void       page_changed_cb                            (EvPageCache        *page_cache,
 273                                                               int                 new_page,
 274                                                               EvView             *view);
 275 static void       on_adjustment_value_changed                (GtkAdjustment      *adjustment,
 276                                                               EvView             *view);
 277
 278 /*** GObject ***/
 279 static void       ev_view_finalize                           (GObject            *object);
 280 static void       ev_view_destroy                            (GtkObject          *object);
 281 static void       ev_view_set_property                       (GObject            *object,
 282                                                               guint               prop_id,
 283                                                               const GValue       *value,
 284                                                               GParamSpec         *pspec);
 285 static void       ev_view_get_property                       (GObject            *object,
 286                                                               guint               prop_id,
 287                                                               GValue             *value,
 288                                                               GParamSpec         *pspec);
 289 static void       ev_view_class_init                         (EvViewClass        *class);
 290 static void       ev_view_init                               (EvView             *view);
 291
 292 /*** Zoom and sizing ***/
 293 static double   zoom_for_size_fit_width                      (int doc_width,
 294                                                               int doc_height,
 295                                                               int target_width,
 296                                                               int target_height,
 297                                                               int vsb_width);
 298 static double   zoom_for_size_best_fit                       (int doc_width,
 299                                                               int doc_height,
 300                                                               int target_width,
 301                                                               int target_height,
 302                                                               int vsb_width,
 303                                                               int hsb_width);
 304 static void     ev_view_zoom_for_size_presentation           (EvView *view,
 305                                                               int     width,
 306                                                               int     height);
 307 static void     ev_view_zoom_for_size_continuous_and_dual_page (EvView *view,
 308                                                                 int     width,
 309                                                                 int     height,
 310                                                                 int     vsb_width,
 311                                                                 int     hsb_height);
 312 static void     ev_view_zoom_for_size_continuous               (EvView *view,
 313                                                                 int     width,
 314                                                                 int     height,
 315                                                                 int     vsb_width,
 316                                                                 int     hsb_height);
 317 static void     ev_view_zoom_for_size_dual_page                (EvView *view,
 318                                                                 int     width,
 319                                                                 int     height,
 320                                                                 int     vsb_width,
 321                                                                 int     hsb_height);
 322 static void     ev_view_zoom_for_size_single_page              (EvView *view,
 323                                                                 int     width,
 324                                                                 int     height,
 325                                                                 int     vsb_width,
 326                                                                 int     hsb_height);
 327 /*** Cursors ***/
 328 static GdkCursor* ev_view_create_invisible_cursor            (void);
 329 static void       ev_view_set_cursor                         (EvView             *view,
 330                                                               EvViewCursor        new_cursor);
 331
 332 /*** Status messages ***/
 333 static void       ev_view_set_status                         (EvView             *view,
 334                                                               const char         *message);
 335 static void       update_find_status_message                 (EvView             *view);
 336 static void       ev_view_set_find_status                    (EvView             *view,
 337                                                               const char         *message);
 338 /*** Find ***/
 339 static void       jump_to_find_result                        (EvView             *view);
 340 static void       jump_to_find_page                          (EvView             *view);
 341
 342 /*** Selection ***/
 343 static void       compute_selections                         (EvView             *view,
 344                                                               GdkRectangle       *view_rect);
 345 static void       clear_selection                            (EvView             *view);
 346 static char*      get_selected_text                          (EvView             *ev_view);
 347 static void       ev_view_primary_get_cb                     (GtkClipboard       *clipboard,
 348                                                               GtkSelectionData   *selection_data,
 349                                                               guint               info,
 350                                                               gpointer            data);
 351 static void       ev_view_primary_clear_cb                   (GtkClipboard       *clipboard,
 352                                                               gpointer            data);
 353 static void       ev_view_update_primary_selection           (EvView             *ev_view);
 354
 355
 356 G_DEFINE_TYPE (EvView, ev_view, GTK_TYPE_WIDGET)
 357
 358 static void
 359 view_update_adjustments (EvView *view)
 360 {
 361         int dx = 0, dy = 0;
 362
 363         if (! GTK_WIDGET_REALIZED (view))
 364                 return;
 365
 366         if (view->hadjustment) {
 367                 dx = view->scroll_x - view->hadjustment->value;
 368                 view->scroll_x = view->hadjustment->value;
 369         } else {
 370                 view->scroll_x = 0;
 371         }
 372
 373         if (view->vadjustment) {
 374                 dy = view->scroll_y - view->vadjustment->value;
 375                 view->scroll_y = view->vadjustment->value;
 376         } else {
 377                 view->scroll_y = 0;
 378         }
 379
 380         //      gtk_widget_queue_draw (GTK_WIDGET (view));
 381         gdk_window_scroll (GTK_WIDGET (view)->window, dx, dy);
 382
 383
 384         if (view->document)
 385                 view_update_range_and_current_page (view);
 386 }
 387
 388 static void
 389 view_set_adjustment_values (EvView         *view,
 390                             GtkOrientation  orientation)
 391 {
 392         GtkWidget *widget = GTK_WIDGET (view);
 393         GtkAdjustment *adjustment;
 394         int requisition;
 395         int allocation;
 396
 397         double factor;
 398         gint new_value;
 399
 400         if (orientation == GTK_ORIENTATION_HORIZONTAL)  {
 401                 requisition = widget->requisition.width;
 402                 allocation = widget->allocation.width;
 403                 adjustment = view->hadjustment;
 404         } else {
 405                 requisition = widget->requisition.height;
 406                 allocation = widget->allocation.height;
 407                 adjustment = view->vadjustment;
 408         }
 409
 410         if (!adjustment)
 411                 return;
 412
 413         factor = 1.0;
 414         switch (view->pending_scroll) {
 415                 case SCROLL_TO_KEEP_POSITION:
 416                         factor = adjustment->value / adjustment->upper;
 417                         break;
 418                 case SCROLL_TO_CURRENT_PAGE:
 419                         break;
 420                 case SCROLL_TO_CENTER:
 421                         factor = (adjustment->value + adjustment->page_size * 0.5) / adjustment->upper;
 422                         break;
 423         }
 424
 425         adjustment->page_size = allocation;
 426         adjustment->step_increment = allocation * 0.1;
 427         adjustment->page_increment = allocation * 0.9;
 428         adjustment->lower = 0;
 429         adjustment->upper = MAX (allocation, requisition);
 430
 431         switch (view->pending_scroll) {
 432                 case SCROLL_TO_KEEP_POSITION:
 433                         new_value = CLAMP (adjustment->upper * factor, 0, adjustment->upper - adjustment->page_size);
 434                         gtk_adjustment_set_value (adjustment, new_value);
 435                         break;
 436                 case SCROLL_TO_CURRENT_PAGE:
 437                         if (orientation == GTK_ORIENTATION_VERTICAL) {
 438                                 view_scroll_to_page (view, view->current_page);
 439                         }
 440                         break;
 441                 case SCROLL_TO_CENTER:
 442                         new_value = CLAMP (adjustment->upper * factor - adjustment->page_size * 0.5, 0, adjustment->upper - adjustment->page_size);
 443                         gtk_adjustment_set_value (adjustment, new_value);
 444                         break;
 445         }
 446
 447         gtk_adjustment_changed (adjustment);
 448 }
 449
 450 static void
 451 view_update_range_and_current_page (EvView *view)
 452 {
 453         /* Presentation trumps all other modes */
 454         if (view->presentation) {
 455                 view->start_page = view->current_page;
 456                 view->end_page = view->current_page;
 457         } else if (view->continuous) {
 458                 GdkRectangle current_area, unused, page_area;
 459                 gint current_page;
 460                 gboolean found = FALSE;
 461                 int i;
 462
 463                 get_bounding_box_size (view, &(page_area.width), &(page_area.height));
 464                 page_area.x = view->spacing;
 465                 page_area.y = view->spacing;
 466
 467                 if (view->hadjustment) {
 468                         current_area.x = view->hadjustment->value;
 469                         current_area.width = view->hadjustment->page_size;
 470                 } else {
 471                         current_area.x = page_area.x;
 472                         current_area.width = page_area.width;
 473                 }
 474
 475                 if (view->vadjustment) {
 476                         current_area.y = view->vadjustment->value;
 477                         current_area.height = view->vadjustment->page_size;
 478                 } else {
 479                         current_area.y = page_area.y;
 480                         current_area.height = page_area.height;
 481                 }
 482
 483                 for (i = 0; i < ev_page_cache_get_n_pages (view->page_cache); i++) {
 484                         if (gdk_rectangle_intersect (&current_area, &page_area, &unused)) {
 485                                 if (! found) {
 486                                         view->start_page = i;
 487                                         found = TRUE;
 488
 489                                 }
 490                                 view->end_page = i;
 491                         } else if (found) {
 492                                 break;
 493                         }
 494                         if (view->dual_page) {
 495                                 if (i % 2 == 0) {
 496                                         page_area.x += page_area.width + view->spacing;
 497                                 } else {
 498                                         page_area.x = view->spacing;
 499                                         page_area.y += page_area.height + view->spacing;
 500                                 }
 501                         } else {
 502                                 page_area.y += page_area.height + view->spacing;
 503                         }
 504                 }
 505
 506                 current_page = ev_page_cache_get_current_page (view->page_cache);
 507
 508                 if (current_page < view->start_page || current_page > view->end_page) {
 509                         view->current_page = view->start_page;
 510                         ev_page_cache_set_current_page (view->page_cache, view->start_page);
 511                 }
 512         } else {
 513                 if (view->dual_page) {
 514                         if (view->current_page % 2 == 0) {
 515                                 view->start_page = view->current_page;
 516                                 if (view->current_page + 1 < ev_page_cache_get_n_pages (view->page_cache))
 517                                         view->end_page = view->start_page + 1;
 518                         } else {
 519                                 view->start_page = view->current_page - 1;
 520                                 view->end_page = view->current_page;
 521                         }
 522                 } else {
 523                         view->start_page = view->current_page;
 524                         view->end_page = view->current_page;
 525                 }
 526         }
 527
 528         ev_pixbuf_cache_set_page_range (view->pixbuf_cache,
 529                                         view->start_page,
 530                                         view->end_page,
 531                                         view->scale);
 532 }
 533
 534 static void
 535 view_scroll_to_page (EvView *view, gint new_page)
 536 {
 537         EvPageCache *page_cache = view->page_cache;
 538         int old_width, old_height;
 539         int new_width, new_height;
 540         int max_height, max_width, n_rows;
 541
 542         ev_page_cache_get_size (page_cache,
 543                                 view->current_page,
 544                                 view->scale,
 545                                 &old_width, &old_height);
 546
 547         ev_page_cache_get_size (page_cache,
 548                                 new_page,
 549                                 view->scale,
 550                                 &new_width, &new_height);
 551
 552         compute_border (view, new_width, new_height, &(view->border));
 553
 554         if (new_width != old_width || new_height != old_height)
 555                 gtk_widget_queue_resize (GTK_WIDGET (view));
 556         else
 557                 gtk_widget_queue_draw (GTK_WIDGET (view));
 558
 559         get_bounding_box_size (view, &max_width, &max_height);
 560
 561         if (view->continuous && view->vadjustment) {
 562
 563                 n_rows = view->dual_page ? new_page / 2 : new_page;
 564
 565                 gtk_adjustment_clamp_page(view->vadjustment,
 566                                           (max_height + view->spacing) * n_rows,
 567                                           (max_height + view->spacing) * n_rows +
 568                                            view->vadjustment->page_size);
 569         } else {
 570                 gtk_adjustment_set_value (view->vadjustment,
 571                                           view->vadjustment->lower);
 572         }
 573
 574         if (view->dual_page && view->hadjustment) {
 575                 if (new_page % 2 == 0) {
 576                         gtk_adjustment_set_value (view->hadjustment,
 577                                                   view->hadjustment->lower);
 578                 } else {
 579                         gtk_adjustment_clamp_page (view->hadjustment,
 580                                                    view->hadjustment->lower +
 581                                                    max_width + view->spacing,
 582                                                    view->hadjustment->lower +
 583                                                    max_width + view->spacing +
 584                                                    view->hadjustment->page_size);
 585                 }
 586         }
 587
 588         view->current_page = new_page;
 589         view_update_range_and_current_page (view);
 590 }
 591
 592 static void
 593 set_scroll_adjustment (EvView *view,
 594                        GtkOrientation  orientation,
 595                        GtkAdjustment  *adjustment)
 596 {
 597         GtkAdjustment **to_set;
 598
 599         if (orientation == GTK_ORIENTATION_HORIZONTAL)
 600                 to_set = &view->hadjustment;
 601         else
 602                 to_set = &view->vadjustment;
 603
 604         if (*to_set != adjustment) {
 605                 if (*to_set) {
 606                         g_signal_handlers_disconnect_by_func (*to_set,
 607                                                               (gpointer) on_adjustment_value_changed,
 608                                                               view);
 609                         g_object_unref (*to_set);
 610                 }
 611
 612                 *to_set = adjustment;
 613                 view_set_adjustment_values (view, orientation);
 614
 615                 if (*to_set) {
 616                         g_object_ref (*to_set);
 617                         g_signal_connect (*to_set, "value_changed",
 618                                           G_CALLBACK (on_adjustment_value_changed), view);
 619                 }
 620         }
 621 }
 622
 623 static void
 624 ev_view_set_scroll_adjustments (EvView *view,
 625                                 GtkAdjustment  *hadjustment,
 626                                 GtkAdjustment  *vadjustment)
 627 {
 628         set_scroll_adjustment (view, GTK_ORIENTATION_HORIZONTAL, hadjustment);
 629         set_scroll_adjustment (view, GTK_ORIENTATION_VERTICAL, vadjustment);
 630
 631         view_update_adjustments (view);
 632 }
 633
 634 static void
 635 add_scroll_binding_keypad (GtkBindingSet  *binding_set,
 636                            guint           keyval,
 637                            GtkScrollType   scroll,
 638                            gboolean        horizontal)
 639 {
 640   guint keypad_keyval = keyval - GDK_Left + GDK_KP_Left;
 641
 642   gtk_binding_entry_add_signal (binding_set, keyval, 0,
 643                                 "scroll_view", 2,
 644                                 GTK_TYPE_SCROLL_TYPE, scroll,
 645                                 G_TYPE_BOOLEAN, horizontal);
 646   gtk_binding_entry_add_signal (binding_set, keypad_keyval, 0,
 647                                 "scroll_view", 2,
 648                                 GTK_TYPE_SCROLL_TYPE, scroll,
 649                                 G_TYPE_BOOLEAN, horizontal);
 650 }
 651
 652 void
 653 ev_view_scroll (EvView        *view,
 654                 EvScrollType   scroll)
 655 {
 656         GtkAdjustment *adjustment;
 657         double value, increment;
 658         gboolean first_page = FALSE;
 659         gboolean last_page = FALSE;
 660
 661         /* Assign values for increment and vertical adjustment */
 662         adjustment = view->vadjustment;
 663         increment = adjustment->page_size * 0.75;
 664         value = adjustment->value;
 665
 666         /* Assign boolean for first and last page */
 667         if (view->current_page == 0)
 668                 first_page = TRUE;
 669         if (view->current_page == ev_page_cache_get_n_pages (view->page_cache) - 1)
 670                 last_page = TRUE;
 671
 672         switch (scroll) {
 673                 case EV_SCROLL_PAGE_BACKWARD:
 674                         /* Do not jump backwards if at the first page */
 675                         if (value == (adjustment->lower) && first_page) {
 676                                 /* Do nothing */
 677                                 /* At the top of a page, assign the upper bound limit of previous page */
 678                         } else if (value == (adjustment->lower)) {
 679                                 value = adjustment->upper - adjustment->page_size;
 680                                 ev_page_cache_set_current_page (view->page_cache, view->current_page - 1);
 681                                 /* Jump to the top */
 682                         } else {
 683                                 value = MAX (value - increment, adjustment->lower);
 684                         }
 685                         break;
 686                 case EV_SCROLL_PAGE_FORWARD:
 687                         /* Do not jump forward if at the last page */
 688                         if (value == (adjustment->upper - adjustment->page_size) && last_page) {
 689                                 /* Do nothing */
 690                         /* At the bottom of a page, assign the lower bound limit of next page */
 691                         } else if (value == (adjustment->upper - adjustment->page_size)) {
 692                                 value = 0;
 693                                 ev_page_cache_set_current_page (view->page_cache, view->current_page + 1);
 694                         /* Jump to the bottom */
 695                         } else {
 696                                 value = MIN (value + increment, adjustment->upper - adjustment->page_size);
 697                         }
 698                         break;
 699                 default:
 700                         break;
 701         }
 702
 703         gtk_adjustment_set_value (adjustment, value);
 704 }
 705
 706 static void
 707 ev_view_scroll_view (EvView *view,
 708                      GtkScrollType scroll,
 709                      gboolean horizontal)
 710 {
 711         GtkAdjustment *adjustment;
 712         double value;
 713
 714         if (horizontal) {
 715                 adjustment = view->hadjustment;
 716         } else {
 717                 adjustment = view->vadjustment;
 718         }
 719
 720         value = adjustment->value;
 721
 722         switch (scroll) {
 723                 case GTK_SCROLL_STEP_BACKWARD:
 724                         value -= adjustment->step_increment;
 725                         break;
 726                 case GTK_SCROLL_STEP_FORWARD:
 727                         value += adjustment->step_increment;
 728                         break;
 729                 default:
 730                         break;
 731         }
 732
 733         value = CLAMP (value, adjustment->lower,
 734                        adjustment->upper - adjustment->page_size);
 735
 736         gtk_adjustment_set_value (adjustment, value);
 737 }
 738
 739 #define MARGIN 5
 740
 741 static void
 742 ensure_rectangle_is_visible (EvView *view, GdkRectangle *rect)
 743 {
 744         GtkWidget *widget = GTK_WIDGET (view);
 745         GtkAdjustment *adjustment;
 746         int value;
 747
 748         adjustment = view->vadjustment;
 749
 750         if (rect->y < adjustment->value) {
 751                 value = MAX (adjustment->lower, rect->y - MARGIN);
 752                 gtk_adjustment_set_value (view->vadjustment, value);
 753         } else if (rect->y + rect->height >
 754                    adjustment->value + widget->allocation.height) {
 755                 value = MIN (adjustment->upper, rect->y + rect->height -
 756                              widget->allocation.height + MARGIN);
 757                 gtk_adjustment_set_value (view->vadjustment, value);
 758         }
 759
 760         adjustment = view->hadjustment;
 761
 762         if (rect->x < adjustment->value) {
 763                 value = MAX (adjustment->lower, rect->x - MARGIN);
 764                 gtk_adjustment_set_value (view->hadjustment, value);
 765         } else if (rect->x + rect->height >
 766                    adjustment->value + widget->allocation.width) {
 767                 value = MIN (adjustment->upper, rect->x + rect->width -
 768                              widget->allocation.width + MARGIN);
 769                 gtk_adjustment_set_value (view->hadjustment, value);
 770         }
 771 }
 772
 773 /*** Geometry computations ***/
 774
 775 static void
 776 compute_border (EvView *view, int width, int height, GtkBorder *border)
 777 {
 778         if (view->presentation) {
 779                 border->left = 0;
 780                 border->right = 0;
 781                 border->top = 0;
 782                 border->bottom = 0;
 783         } else {
 784                 ev_document_misc_get_page_border_size (width, height, border);
 785         }
 786 }
 787
 788 static gboolean
 789 get_page_extents (EvView       *view,
 790                   gint          page,
 791                   GdkRectangle *page_area,
 792                   GtkBorder    *border)
 793 {
 794         GtkWidget *widget;
 795         int width, height;
 796
 797         widget = GTK_WIDGET (view);
 798
 799         /* Quick sanity check */
 800         if (view->presentation) {
 801                 if (view->current_page != page)
 802                         return FALSE;
 803         } else if (view->continuous) {
 804                 if (page < view->start_page ||
 805                     page > view->end_page)
 806                         return FALSE;
 807         } else if (view->dual_page) {
 808                 if (ABS (page - view->current_page) > 1)
 809                         return FALSE;
 810         } else {
 811                 if (view->current_page != page)
 812                         return FALSE;
 813         }
 814
 815         /* Get the size of the page */
 816         ev_page_cache_get_size (view->page_cache, page,
 817                                 view->scale,
 818                                 &width, &height);
 819         compute_border (view, width, height, border);
 820         page_area->width = width + border->left + border->right;
 821         page_area->height = height + border->top + border->bottom;
 822
 823         if (view->presentation) {
 824                 page_area->x = (MAX (0, widget->allocation.width - width))/2;
 825                 page_area->y = (MAX (0, widget->allocation.height - height))/2;
 826         } else if (view->continuous) {
 827                 gint max_width, max_height;
 828                 gint x, y;
 829
 830                 get_bounding_box_size (view, &max_width, &max_height);
 831                 /* Get the location of the bounding box */
 832                 if (view->dual_page) {
 833                         x = view->spacing + (page % 2) * (max_width + view->spacing);
 834                         y = view->spacing + (page / 2) * (max_height + view->spacing);
 835                         x = x + MAX (0, widget->allocation.width - (max_width * 2 + view->spacing * 3))/2;
 836                 } else {
 837                         x = view->spacing;
 838                         y = view->spacing + page * (max_height + view->spacing);
 839                         x = x + MAX (0, widget->allocation.width - (max_width + view->spacing * 2))/2;
 840                 }
 841                 page_area->x = x;
 842                 page_area->y = y;
 843         } else {
 844                 gint x, y;
 845                 if (view->dual_page) {
 846                         gint width_2, height_2;
 847                         gint max_width = width;
 848                         gint max_height = height;
 849                         GtkBorder overall_border;
 850                         gint other_page;
 851
 852                         other_page = page ^ 1;
 853
 854                         /* First, we get the bounding box of the two pages */
 855                         if (other_page < ev_page_cache_get_n_pages (view->page_cache)) {
 856                                 ev_page_cache_get_size (view->page_cache,
 857                                                         page + 1,
 858                                                         view->scale,
 859                                                         &width_2, &height_2);
 860                                 if (width_2 > width)
 861                                         max_width = width_2;
 862                                 if (height_2 > height)
 863                                         max_height = height_2;
 864                         }
 865                         compute_border (view, max_width, max_height, &overall_border);
 866
 867                         /* Find the offsets */
 868                         x = view->spacing;
 869                         y = view->spacing;
 870
 871                         /* Adjust for being the left or right page */
 872                         if (page % 2 == 0)
 873                                 x = x + max_width - width;
 874                         else
 875                                 x = x + (max_width + overall_border.left + overall_border.right) + view->spacing;
 876
 877                         y = y + (max_height - height)/2;
 878
 879                         /* Adjust for extra allocation */
 880                         x = x + MAX (0, widget->allocation.width -
 881                                      ((max_width + overall_border.left + overall_border.right) * 2 + view->spacing * 3))/2;
 882                         y = y + MAX (0, widget->allocation.height - (height + view->spacing * 2))/2;
 883                 } else {
 884                         x = view->spacing;
 885                         y = view->spacing;
 886
 887                         /* Adjust for extra allocation */
 888                         x = x + MAX (0, widget->allocation.width - (width + view->spacing * 2))/2;
 889                         y = y + MAX (0, widget->allocation.height - (height + view->spacing * 2))/2;
 890                 }
 891
 892                 page_area->x = x;
 893                 page_area->y = y;
 894         }
 895
 896         return TRUE;
 897 }
 898
 899 static void
 900 view_rect_to_doc_rect (EvView *view,
 901                        GdkRectangle *view_rect,
 902                        GdkRectangle *page_area,
 903                        EvRectangle  *doc_rect)
 904 {
 905         doc_rect->x1 = floor ((view_rect->x - page_area->x) / view->scale);
 906         doc_rect->y1 = floor ((view_rect->y - page_area->y) / view->scale);
 907         doc_rect->x2 = doc_rect->x1 + ceil (view_rect->width / view->scale);
 908         doc_rect->y2 = doc_rect->y1 + ceil (view_rect->height / view->scale);
 909 }
 910
 911 static void
 912 doc_rect_to_view_rect (EvView       *view,
 913                        int           page,
 914                        EvRectangle  *doc_rect,
 915                        GdkRectangle *view_rect)
 916 {
 917         GdkRectangle page_area;
 918         GtkBorder border;
 919         int width, height;
 920
 921         get_page_extents (view, page, &page_area, &border);
 922
 923         width = doc_rect->x2 - doc_rect->x1;
 924         height = doc_rect->y2 - doc_rect->y1;
 925         view_rect->x = floor (doc_rect->x1 * view->scale) + page_area.x;
 926         view_rect->y = floor (doc_rect->y1 * view->scale) + page_area.y;
 927         view_rect->width = ceil (width * view->scale);
 928         view_rect->height = ceil (height * view->scale);
 929 }
 930
 931 static void
 932 get_bounding_box_size (EvView *view, int *max_width, int *max_height)
 933 {
 934         GtkBorder border;
 935         int width, height;
 936
 937         if (max_width) {
 938                 ev_page_cache_get_max_width_size (view->page_cache,
 939                                                   view->scale,
 940                                                   &width, &height);
 941                 compute_border (view, width, height, &border);
 942                 *max_width = width + border.left + border.right;
 943         }
 944
 945
 946         if (max_height) {
 947                 ev_page_cache_get_max_height_size (view->page_cache,
 948                                                    view->scale,
 949                                                    &width, &height);
 950                 compute_border (view, width, height, &border);
 951                 *max_height = height + border.top + border.bottom;
 952         }
 953 }
 954
 955 static void
 956 find_page_at_location (EvView  *view,
 957                        gdouble  x,
 958                        gdouble  y,
 959                        gint    *page,
 960                        gint    *x_offset,
 961                        gint    *y_offset)
 962 {
 963         int i;
 964
 965         if (view->document == NULL)
 966                 return;
 967
 968         g_assert (page);
 969         g_assert (x_offset);
 970         g_assert (y_offset);
 971
 972         for (i = view->start_page; i <= view->end_page; i++) {
 973                 GdkRectangle page_area;
 974                 GtkBorder border;
 975
 976                 if (! get_page_extents (view, i, &page_area, &border))
 977                         continue;
 978
 979                 if ((x >= page_area.x + border.left) &&
 980                     (x < page_area.x + page_area.width - border.right) &&
 981                     (y >= page_area.y + border.top) &&
 982                     (y < page_area.y + page_area.height - border.bottom)) {
 983                         *page = i;
 984                         *x_offset = x - (page_area.x + border.left);
 985                         *y_offset = y - (page_area.y + border.top);
 986                         return;
 987                 }
 988         }
 989
 990         *page = -1;
 991 }
 992
 993 /*** Hyperref ***/
 994 static EvLink *
 995 get_link_at_location (EvView  *view,
 996                       gdouble  x,
 997                       gdouble  y)
 998 {
 999         gint page = -1;
1000         gint x_offset = 0, y_offset = 0;
1001         GList *link_mapping;
1002
1003         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1004
1005         if (page == -1)
1006                 return NULL;
1007
1008         link_mapping = ev_pixbuf_cache_get_link_mapping (view->pixbuf_cache, page);
1009
1010         if (link_mapping)
1011                 return ev_link_mapping_find (link_mapping, x_offset / view->scale, y_offset / view->scale);
1012         else
1013                 return NULL;
1014 }
1015
1016 /* FIXME: standardize this sometime */
1017 static void
1018 go_to_link (EvView *view, EvLink *link)
1019 {
1020         EvLinkType type;
1021         const char *uri;
1022         int page;
1023
1024         type = ev_link_get_link_type (link);
1025
1026         switch (type) {
1027                 case EV_LINK_TYPE_TITLE:
1028                         break;
1029                 case EV_LINK_TYPE_PAGE:
1030                         page = ev_link_get_page (link);
1031                         ev_page_cache_set_current_page (view->page_cache, page);
1032                         break;
1033                 case EV_LINK_TYPE_EXTERNAL_URI:
1034                         uri = ev_link_get_uri (link);
1035                         gnome_vfs_url_show (uri);
1036                         break;
1037         }
1038 }
1039
1040 static char *
1041 status_message_from_link (EvView *view, EvLink *link)
1042 {
1043         EvLinkType type;
1044         char *msg = NULL;
1045         char *page_label;
1046
1047         type = ev_link_get_link_type (link);
1048
1049         switch (type) {
1050                 case EV_LINK_TYPE_TITLE:
1051                         if (ev_link_get_title (link))
1052                                 msg = g_strdup (ev_link_get_title (link));
1053                         break;
1054                 case EV_LINK_TYPE_PAGE:
1055                         page_label = ev_page_cache_get_page_label (view->page_cache, ev_link_get_page (link));
1056                         msg = g_strdup_printf (_("Go to page %s"), page_label);
1057                         g_free (page_label);
1058                         break;
1059                 case EV_LINK_TYPE_EXTERNAL_URI:
1060                         msg = g_strdup (ev_link_get_uri (link));
1061                         break;
1062                 default:
1063                         break;
1064         }
1065
1066         return msg;
1067 }
1068
1069
1070 /*** GtkWidget implementation ***/
1071
1072 static void
1073 ev_view_size_request_continuous_dual_page (EvView         *view,
1074                                                GtkRequisition *requisition)
1075 {
1076         int max_width, max_height;
1077         int n_rows;
1078
1079         get_bounding_box_size (view, &max_width, &max_height);
1080
1081         n_rows = (1 + ev_page_cache_get_n_pages (view->page_cache)) / 2;
1082
1083         requisition->width = (max_width * 2) + (view->spacing * 3);
1084         requisition->height = max_height * n_rows + (view->spacing * (n_rows + 1));
1085
1086         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
1087                 requisition->width = 1;
1088         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
1089                 requisition->width = 1;
1090                 /* FIXME: This could actually be set on one page docs or docs
1091                  * with a strange aspect ratio. */
1092                 /* requisition->height = 1;*/
1093         }
1094 }
1095
1096 static void
1097 ev_view_size_request_continuous (EvView         *view,
1098                                  GtkRequisition *requisition)
1099 {
1100         int max_width, max_height;
1101         int n_pages;
1102
1103         get_bounding_box_size (view, &max_width, &max_height);
1104
1105         n_pages = ev_page_cache_get_n_pages (view->page_cache);
1106
1107         requisition->width = max_width + (view->spacing * 2);
1108         requisition->height = max_height * n_pages + (view->spacing * (n_pages + 1));
1109
1110         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
1111                 requisition->width = 1;
1112         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
1113                 requisition->width = 1;
1114                 /* FIXME: This could actually be set on one page docs or docs
1115                  * with a strange aspect ratio. */
1116                 /* requisition->height = 1;*/
1117         }
1118 }
1119
1120 static void
1121 ev_view_size_request_dual_page (EvView         *view,
1122                                 GtkRequisition *requisition)
1123 {
1124         GtkBorder border;
1125         gint width, height;
1126
1127         /* Find the largest of the two. */
1128         ev_page_cache_get_size (view->page_cache,
1129                                 view->current_page,
1130                                 view->scale,
1131                                 &width, &height);
1132         if (view->current_page + 1 < ev_page_cache_get_n_pages (view->page_cache)) {
1133                 gint width_2, height_2;
1134                 ev_page_cache_get_size (view->page_cache,
1135                                         view->current_page + 1,
1136                                         view->scale,
1137                                         &width_2, &height_2);
1138                 if (width_2 > width) {
1139                         width = width_2;
1140                         height = height_2;
1141                 }
1142         }
1143         compute_border (view, width, height, &border);
1144
1145         requisition->width = ((width + border.left + border.right) * 2) +
1146                 (view->spacing * 3);
1147         requisition->height = (height + border.top + border.bottom) +
1148                 (view->spacing * 2);
1149
1150         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
1151                 requisition->width = 1;
1152         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
1153                 requisition->width = 1;
1154                 requisition->height = 1;
1155         }
1156 }
1157
1158 static void
1159 ev_view_size_request_single_page (EvView         *view,
1160                                   GtkRequisition *requisition)
1161 {
1162         GtkBorder border;
1163         gint width, height;
1164
1165         ev_page_cache_get_size (view->page_cache,
1166                                 view->current_page,
1167                                 view->scale,
1168                                 &width, &height);
1169         compute_border (view, width, height, &border);
1170
1171         requisition->width = width + border.left + border.right + (2 * view->spacing);
1172         requisition->height = height + border.top + border.bottom + (2 * view->spacing);
1173
1174         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
1175                 requisition->width = 1;
1176                 requisition->height = height + border.top + border.bottom + (2 * view->spacing);
1177         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
1178                 requisition->width = 1;
1179                 requisition->height = 1;
1180         }
1181 }
1182
1183 static void
1184 ev_view_size_request (GtkWidget      *widget,
1185                       GtkRequisition *requisition)
1186 {
1187         EvView *view = EV_VIEW (widget);
1188
1189         if (!GTK_WIDGET_REALIZED (widget))
1190                 return;
1191
1192         if (view->document == NULL) {
1193                 requisition->width = 1;
1194                 requisition->height = 1;
1195                 return;
1196         }
1197
1198         if (view->presentation) {
1199                 requisition->width = 1;
1200                 requisition->height = 1;
1201                 return;
1202         }
1203
1204         if (view->continuous && view->dual_page)
1205                 ev_view_size_request_continuous_dual_page (view, requisition);
1206         else if (view->continuous)
1207                 ev_view_size_request_continuous (view, requisition);
1208         else if (view->dual_page)
1209                 ev_view_size_request_dual_page (view, requisition);
1210         else
1211                 ev_view_size_request_single_page (view, requisition);
1212 }
1213
1214 static void
1215 ev_view_size_allocate (GtkWidget      *widget,
1216                        GtkAllocation  *allocation)
1217 {
1218         EvView *view = EV_VIEW (widget);
1219
1220         if (view->sizing_mode == EV_SIZING_FIT_WIDTH ||
1221                   view->sizing_mode == EV_SIZING_BEST_FIT) {
1222
1223                 g_signal_emit (view, signals[SIGNAL_ZOOM_INVALID], 0);
1224
1225                 ev_view_size_request (widget, &widget->requisition);
1226         }
1227
1228         view_set_adjustment_values (view, GTK_ORIENTATION_HORIZONTAL);
1229         view_set_adjustment_values (view, GTK_ORIENTATION_VERTICAL);
1230
1231         view->pending_scroll = SCROLL_TO_KEEP_POSITION;
1232
1233         if (view->document)
1234                 view_update_range_and_current_page (view);
1235
1236         GTK_WIDGET_CLASS (ev_view_parent_class)->size_allocate (widget, allocation);
1237 }
1238
1239 static void
1240 ev_view_realize (GtkWidget *widget)
1241 {
1242         EvView *view = EV_VIEW (widget);
1243         GdkWindowAttr attributes;
1244
1245         GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
1246
1247
1248         attributes.window_type = GDK_WINDOW_CHILD;
1249         attributes.wclass = GDK_INPUT_OUTPUT;
1250         attributes.visual = gtk_widget_get_visual (widget);
1251         attributes.colormap = gtk_widget_get_colormap (widget);
1252
1253         attributes.x = widget->allocation.x;
1254         attributes.y = widget->allocation.y;
1255         attributes.width = widget->allocation.width;
1256         attributes.height = widget->allocation.height;
1257         attributes.event_mask = GDK_EXPOSURE_MASK |
1258                                 GDK_BUTTON_PRESS_MASK |
1259                                 GDK_BUTTON_RELEASE_MASK |
1260                                 GDK_SCROLL_MASK |
1261                                 GDK_KEY_PRESS_MASK |
1262                                 GDK_POINTER_MOTION_MASK |
1263                                 GDK_LEAVE_NOTIFY_MASK;
1264
1265         widget->window = gdk_window_new (gtk_widget_get_parent_window (widget),
1266                                          &attributes,
1267                                          GDK_WA_X | GDK_WA_Y |
1268                                          GDK_WA_COLORMAP |
1269                                          GDK_WA_VISUAL);
1270         gdk_window_set_user_data (widget->window, widget);
1271         widget->style = gtk_style_attach (widget->style, widget->window);
1272
1273         if (view->presentation)
1274                 gdk_window_set_background (widget->window, &widget->style->black);
1275         else
1276                 gdk_window_set_background (widget->window, &widget->style->mid [GTK_STATE_NORMAL]);
1277
1278         if (view->document) {
1279                 /* We can't get page size without a target, so we have to
1280                  * queue a size request at realization. Could be fixed
1281                  * with EvDocument changes to allow setting a GdkScreen
1282                  * without setting a target.
1283                  */
1284                 gtk_widget_queue_resize (widget);
1285         }
1286 }
1287
1288 static void
1289 ev_view_unrealize (GtkWidget *widget)
1290 {
1291         GTK_WIDGET_CLASS (ev_view_parent_class)->unrealize (widget);
1292 }
1293
1294 static gboolean
1295 ev_view_scroll_event (GtkWidget *widget, GdkEventScroll *event)
1296 {
1297         EvView *view = EV_VIEW (widget);
1298
1299         if ((event->state & GDK_CONTROL_MASK) != 0) {
1300
1301                  ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1302
1303                  if ((event->direction == GDK_SCROLL_UP ||
1304                         event->direction == GDK_SCROLL_LEFT) &&
1305                         ev_view_can_zoom_in (view)) {
1306                                 ev_view_zoom_in (view);
1307                  } else if (ev_view_can_zoom_out (view)) {
1308                                 ev_view_zoom_out (view);
1309                  }
1310
1311                  return TRUE;
1312         }
1313
1314         if ((event->state & GDK_SHIFT_MASK) != 0) {
1315                 if (event->direction == GDK_SCROLL_UP)
1316                         event->direction = GDK_SCROLL_LEFT;
1317                 if (event->direction == GDK_SCROLL_DOWN)
1318                         event->direction = GDK_SCROLL_RIGHT;
1319         }
1320
1321         return FALSE;
1322 }
1323
1324 static gboolean
1325 ev_view_expose_event (GtkWidget      *widget,
1326                       GdkEventExpose *event)
1327 {
1328         EvView *view = EV_VIEW (widget);
1329         GdkRectangle rubberband;
1330         GList *l;
1331         int i;
1332
1333         if (view->document == NULL)
1334                 return FALSE;
1335
1336         for (i = view->start_page; i <= view->end_page; i++) {
1337                 GdkRectangle page_area;
1338                 GtkBorder border;
1339
1340                 if (!get_page_extents (view, i, &page_area, &border))
1341                         continue;
1342
1343                 page_area.x -= view->scroll_x;
1344                 page_area.y -= view->scroll_y;
1345
1346                 draw_one_page (view, i, &page_area, &border, &(event->area));
1347
1348                 if (EV_IS_DOCUMENT_FIND (view->document)) {
1349                         highlight_find_results (view, i);
1350                 }
1351         }
1352
1353         for (l = view->selections; l != NULL; l = l->next) {
1354                 EvViewSelection *selection = (EvViewSelection *)l->data;
1355
1356                 doc_rect_to_view_rect (view, selection->page,
1357                                        &selection->rect, &rubberband);
1358                 if (rubberband.width > 0 && rubberband.height > 0) {
1359                         draw_rubberband (GTK_WIDGET (view), GTK_WIDGET(view)->window,
1360                                          &rubberband, 0x40);
1361                 }
1362         }
1363
1364         return FALSE;
1365 }
1366
1367 static gboolean
1368 ev_view_button_press_event (GtkWidget      *widget,
1369                             GdkEventButton *event)
1370 {
1371         EvView *view = EV_VIEW (widget);
1372
1373         if (!GTK_WIDGET_HAS_FOCUS (widget)) {
1374                 gtk_widget_grab_focus (widget);
1375         }
1376
1377         view->pressed_button = event->button;
1378
1379         switch (event->button) {
1380                 case 1:
1381                         if (view->selections) {
1382                                 clear_selection (view);
1383                                 gtk_widget_queue_draw (widget);
1384                         }
1385
1386                         view->selection_start.x = event->x;
1387                         view->selection_start.y = event->y;
1388                         return TRUE;
1389                 case 2:
1390                         /* use root coordinates as reference point because
1391                          * scrolling changes window relative coordinates */
1392                         view->drag_info.start.x = event->x_root;
1393                         view->drag_info.start.y = event->y_root;
1394                         view->drag_info.hadj = gtk_adjustment_get_value (view->hadjustment);
1395                         view->drag_info.vadj = gtk_adjustment_get_value (view->vadjustment);
1396
1397                         ev_view_set_cursor (view, EV_VIEW_CURSOR_DRAG);
1398
1399                         return TRUE;
1400         }
1401
1402         return FALSE;
1403 }
1404
1405 static gboolean
1406 ev_view_motion_notify_event (GtkWidget      *widget,
1407                              GdkEventMotion *event)
1408 {
1409         EvView *view = EV_VIEW (widget);
1410
1411         if (view->pressed_button == 1) {
1412                 GdkRectangle selection;
1413
1414                 selection.x = MIN (view->selection_start.x, event->x) + view->scroll_x;
1415                 selection.y = MIN (view->selection_start.y, event->y) + view->scroll_y;
1416                 selection.width = ABS (view->selection_start.x - event->x) + 1;
1417                 selection.height = ABS (view->selection_start.y - event->y) + 1;
1418
1419                 compute_selections (view, &selection);
1420
1421                 gtk_widget_queue_draw (widget);
1422
1423                 return TRUE;
1424         } else if (view->pressed_button == 2) {
1425                 if (!view->drag_info.dragging) {
1426                         gboolean start;
1427
1428                         start = gtk_drag_check_threshold (widget,
1429                                                           view->drag_info.start.x,
1430                                                           view->drag_info.start.y,
1431                                                           event->x_root,
1432                                                           event->y_root);
1433                         view->drag_info.dragging = start;
1434                 }
1435
1436                 if (view->drag_info.dragging) {
1437                         int dx, dy;
1438                         gdouble dhadj_value, dvadj_value;
1439
1440                         dx = event->x_root - view->drag_info.start.x;
1441                         dy = event->y_root - view->drag_info.start.y;
1442
1443                         dhadj_value = view->hadjustment->page_size *
1444                                       (gdouble)dx / widget->allocation.width;
1445                         dvadj_value = view->vadjustment->page_size *
1446                                       (gdouble)dy / widget->allocation.height;
1447
1448                         /* clamp scrolling to visible area */
1449                         gtk_adjustment_set_value (view->hadjustment,
1450                                                   MIN(view->drag_info.hadj - dhadj_value,
1451                                                       view->hadjustment->upper -
1452                                                       view->hadjustment->page_size));
1453                         gtk_adjustment_set_value (view->vadjustment,
1454                                                   MIN(view->drag_info.vadj - dvadj_value,
1455                                                       view->vadjustment->upper -
1456                                                       view->vadjustment->page_size));
1457
1458                         return TRUE;
1459                 }
1460         } else if (view->pressed_button <= 0 && view->document) {
1461                 EvLink *link;
1462
1463                 link = get_link_at_location (view, event->x + view->scroll_x, event->y + view->scroll_y);
1464                 if (link) {
1465                         char *msg;
1466
1467                         msg = status_message_from_link (view, link);
1468                         ev_view_set_status (view, msg);
1469                         ev_view_set_cursor (view, EV_VIEW_CURSOR_LINK);
1470                         g_free (msg);
1471                 } else {
1472                         ev_view_set_status (view, NULL);
1473                         if (view->cursor == EV_VIEW_CURSOR_LINK) {
1474                                 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
1475                         }
1476                 }
1477                 return TRUE;
1478         }
1479
1480         return FALSE;
1481 }
1482
1483 static gboolean
1484 ev_view_button_release_event (GtkWidget      *widget,
1485                               GdkEventButton *event)
1486 {
1487         EvView *view = EV_VIEW (widget);
1488
1489         if (view->pressed_button == 2) {
1490                 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
1491         }
1492
1493         view->pressed_button = -1;
1494         view->drag_info.dragging = FALSE;
1495
1496         if (view->selections) {
1497                 ev_view_update_primary_selection (view);
1498         } else if (view->document) {
1499                 EvLink *link;
1500
1501                 link = get_link_at_location (view, event->x + view->scroll_x, event->y + view->scroll_y);
1502                 if (link) {
1503                         go_to_link (view, link);
1504                 }
1505         }
1506
1507         return FALSE;
1508 }
1509
1510 /*** Drawing ***/
1511
1512 static guint32
1513 ev_gdk_color_to_rgb (const GdkColor *color)
1514 {
1515   guint32 result;
1516   result = (0xff0000 | (color->red & 0xff00));
1517   result <<= 8;
1518   result |= ((color->green & 0xff00) | (color->blue >> 8));
1519   return result;
1520 }
1521
1522 static void
1523 draw_rubberband (GtkWidget *widget, GdkWindow *window,
1524                  const GdkRectangle *rect, guchar alpha)
1525 {
1526         GdkGC *gc;
1527         GdkPixbuf *pixbuf;
1528         GdkColor *fill_color_gdk;
1529         guint fill_color;
1530
1531         fill_color_gdk = gdk_color_copy (&GTK_WIDGET (widget)->style->base[GTK_STATE_SELECTED]);
1532         fill_color = ev_gdk_color_to_rgb (fill_color_gdk) << 8 | alpha;
1533
1534         pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE, 8,
1535                                  rect->width, rect->height);
1536         gdk_pixbuf_fill (pixbuf, fill_color);
1537
1538         gdk_draw_pixbuf (window, NULL, pixbuf,
1539                          0, 0,
1540                          rect->x - EV_VIEW (widget)->scroll_x, rect->y - EV_VIEW (widget)->scroll_y,
1541                          rect->width, rect->height,
1542                          GDK_RGB_DITHER_NONE,
1543                          0, 0);
1544
1545         g_object_unref (pixbuf);
1546
1547         gc = gdk_gc_new (window);
1548         gdk_gc_set_rgb_fg_color (gc, fill_color_gdk);
1549         gdk_draw_rectangle (window, gc, FALSE,
1550                             rect->x - EV_VIEW (widget)->scroll_x, rect->y - EV_VIEW (widget)->scroll_y,
1551                             rect->width - 1,
1552                             rect->height - 1);
1553         g_object_unref (gc);
1554
1555         gdk_color_free (fill_color_gdk);
1556 }
1557
1558
1559 static void
1560 highlight_find_results (EvView *view, int page)
1561 {
1562         EvDocumentFind *find;
1563         int i, results = 0;
1564
1565         g_return_if_fail (EV_IS_DOCUMENT_FIND (view->document));
1566
1567         find = EV_DOCUMENT_FIND (view->document);
1568
1569         results = ev_document_find_get_n_results (find, page);
1570
1571         for (i = 0; i < results; i++) {
1572                 EvRectangle rectangle;
1573                 GdkRectangle view_rectangle;
1574                 guchar alpha;
1575
1576                 if (i == view->find_result && page == view->find_page) {
1577                         alpha = 0x90;
1578                 } else {
1579                         alpha = 0x20;
1580                 }
1581
1582                 ev_document_find_get_result (find, page,
1583                                              i, &rectangle);
1584                 doc_rect_to_view_rect (view, page, &rectangle, &view_rectangle);
1585                 draw_rubberband (GTK_WIDGET (view), GTK_WIDGET(view)->window,
1586                                  &view_rectangle, alpha);
1587         }
1588 }
1589
1590 static void
1591 draw_one_page (EvView       *view,
1592                gint          page,
1593                GdkRectangle *page_area,
1594                GtkBorder    *border,
1595                GdkRectangle *expose_area)
1596 {
1597         gint width, height;
1598         GdkPixbuf *scaled_image;
1599         GdkPixbuf *current_pixbuf;
1600         GdkRectangle overlap;
1601         GdkRectangle real_page_area;
1602
1603         g_assert (view->document);
1604
1605         if (!gdk_rectangle_intersect (page_area, expose_area, &overlap))
1606                 return;
1607
1608         ev_page_cache_get_size (view->page_cache,
1609                                 page, view->scale,
1610                                 &width, &height);
1611
1612         /* Render the document itself */
1613         real_page_area = *page_area;
1614
1615         real_page_area.x += border->left;
1616         real_page_area.y += border->top;
1617         real_page_area.width -= (border->left + border->right);
1618         real_page_area.height -= (border->top + border->bottom);
1619
1620         if (! gdk_rectangle_intersect (&real_page_area, expose_area, &overlap))
1621                 return;
1622
1623         ev_document_misc_paint_one_page (GTK_WIDGET(view)->window,
1624                                          GTK_WIDGET (view),
1625                                          page_area, border);
1626
1627         current_pixbuf = ev_pixbuf_cache_get_pixbuf (view->pixbuf_cache, page);
1628
1629         if (current_pixbuf == NULL)
1630                 scaled_image = NULL;
1631         else if (width == gdk_pixbuf_get_width (current_pixbuf) &&
1632                  height == gdk_pixbuf_get_height (current_pixbuf))
1633                 scaled_image = g_object_ref (current_pixbuf);
1634         else
1635                 scaled_image = gdk_pixbuf_scale_simple (current_pixbuf,
1636                                                         width, height,
1637                                                         GDK_INTERP_NEAREST);
1638
1639         if (scaled_image) {
1640                 gdk_draw_pixbuf (GTK_WIDGET(view)->window,
1641                                  GTK_WIDGET (view)->style->fg_gc[GTK_STATE_NORMAL],
1642                                  scaled_image,
1643                                  overlap.x - real_page_area.x,
1644                                  overlap.y - real_page_area.y,
1645                                  overlap.x, overlap.y,
1646                                  overlap.width, overlap.height,
1647                                  GDK_RGB_DITHER_NORMAL,
1648                                  0, 0);
1649                 g_object_unref (scaled_image);
1650         }
1651 }
1652
1653 /*** GObject functions ***/
1654
1655 static void
1656 ev_view_finalize (GObject *object)
1657 {
1658         EvView *view = EV_VIEW (object);
1659
1660         LOG ("Finalize");
1661
1662         g_free (view->status);
1663         g_free (view->find_status);
1664
1665         clear_selection (view);
1666
1667         G_OBJECT_CLASS (ev_view_parent_class)->finalize (object);
1668 }
1669
1670 static void
1671 ev_view_destroy (GtkObject *object)
1672 {
1673         EvView *view = EV_VIEW (object);
1674
1675         if (view->document) {
1676                 g_object_unref (view->document);
1677                 view->document = NULL;
1678         }
1679         if (view->pixbuf_cache) {
1680                 g_object_unref (view->pixbuf_cache);
1681                 view->pixbuf_cache = NULL;
1682         }
1683         ev_view_set_scroll_adjustments (view, NULL, NULL);
1684
1685         GTK_OBJECT_CLASS (ev_view_parent_class)->destroy (object);
1686 }
1687
1688 static void
1689 ev_view_set_property (GObject      *object,
1690                       guint         prop_id,
1691                       const GValue *value,
1692                       GParamSpec   *pspec)
1693 {
1694         EvView *view = EV_VIEW (object);
1695
1696         switch (prop_id)
1697         {
1698         case PROP_CONTINUOUS:
1699                 ev_view_set_continuous (view, g_value_get_boolean (value));
1700                 break;
1701         case PROP_DUAL_PAGE:
1702                 ev_view_set_dual_page (view, g_value_get_boolean (value));
1703                 break;
1704         case PROP_FULLSCREEN:
1705                 ev_view_set_fullscreen (view, g_value_get_boolean (value));
1706                 break;
1707         case PROP_PRESENTATION:
1708                 ev_view_set_presentation (view, g_value_get_boolean (value));
1709                 break;
1710         case PROP_SIZING_MODE:
1711                 ev_view_set_sizing_mode (view, g_value_get_enum (value));
1712                 break;
1713         default:
1714                 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1715         }
1716 }
1717
1718 static void
1719 ev_view_get_property (GObject *object,
1720                       guint prop_id,
1721                       GValue *value,
1722                       GParamSpec *pspec)
1723 {
1724         EvView *view = EV_VIEW (object);
1725
1726         switch (prop_id)
1727         {
1728         case PROP_STATUS:
1729                 g_value_set_string (value, view->status);
1730                 break;
1731         case PROP_FIND_STATUS:
1732                 g_value_set_string (value, view->status);
1733                 break;
1734         case PROP_CONTINUOUS:
1735                 g_value_set_boolean (value, view->continuous);
1736                 break;
1737         case PROP_DUAL_PAGE:
1738                 g_value_set_boolean (value, view->dual_page);
1739                 break;
1740         case PROP_FULLSCREEN:
1741                 g_value_set_boolean (value, view->fullscreen);
1742                 break;
1743         case PROP_PRESENTATION:
1744                 g_value_set_boolean (value, view->presentation);
1745                 break;
1746         case PROP_SIZING_MODE:
1747                 g_value_set_enum (value, view->sizing_mode);
1748                 break;
1749         default:
1750                 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1751         }
1752 }
1753
1754 static void
1755 ev_view_class_init (EvViewClass *class)
1756 {
1757         GObjectClass *object_class = G_OBJECT_CLASS (class);
1758         GtkObjectClass *gtk_object_class = GTK_OBJECT_CLASS (class);
1759         GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
1760         GtkBindingSet *binding_set;
1761
1762         object_class->finalize = ev_view_finalize;
1763         object_class->set_property = ev_view_set_property;
1764         object_class->get_property = ev_view_get_property;
1765
1766         widget_class->expose_event = ev_view_expose_event;
1767         widget_class->button_press_event = ev_view_button_press_event;
1768         widget_class->motion_notify_event = ev_view_motion_notify_event;
1769         widget_class->button_release_event = ev_view_button_release_event;
1770         widget_class->size_request = ev_view_size_request;
1771         widget_class->size_allocate = ev_view_size_allocate;
1772         widget_class->realize = ev_view_realize;
1773         widget_class->unrealize = ev_view_unrealize;
1774         widget_class->scroll_event = ev_view_scroll_event;
1775         gtk_object_class->destroy = ev_view_destroy;
1776
1777         class->set_scroll_adjustments = ev_view_set_scroll_adjustments;
1778         class->scroll_view = ev_view_scroll_view;
1779
1780         widget_class->set_scroll_adjustments_signal =
1781             g_signal_new ("set-scroll-adjustments",
1782                           G_OBJECT_CLASS_TYPE (object_class),
1783                           G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1784                           G_STRUCT_OFFSET (EvViewClass, set_scroll_adjustments),
1785                           NULL, NULL,
1786                           ev_marshal_VOID__OBJECT_OBJECT,
1787                           G_TYPE_NONE, 2,
1788                           GTK_TYPE_ADJUSTMENT,
1789                           GTK_TYPE_ADJUSTMENT);
1790
1791         signals[SIGNAL_SCROLL_VIEW] = g_signal_new ("scroll-view",
1792                          G_TYPE_FROM_CLASS (object_class),
1793                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1794                          G_STRUCT_OFFSET (EvViewClass, scroll_view),
1795                          NULL, NULL,
1796                          ev_marshal_VOID__ENUM_BOOLEAN,
1797                          G_TYPE_NONE, 2,
1798                          GTK_TYPE_SCROLL_TYPE,
1799                          G_TYPE_BOOLEAN);
1800
1801         signals[SIGNAL_ZOOM_INVALID] = g_signal_new ("zoom-invalid",
1802                          G_TYPE_FROM_CLASS (object_class),
1803                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1804                          G_STRUCT_OFFSET (EvViewClass, zoom_invalid),
1805                          NULL, NULL,
1806                          ev_marshal_VOID__VOID,
1807                          G_TYPE_NONE, 0, G_TYPE_NONE);
1808
1809         g_object_class_install_property (object_class,
1810                                          PROP_STATUS,
1811                                          g_param_spec_string ("status",
1812                                                               "Status Message",
1813                                                               "The status message",
1814                                                               NULL,
1815                                                               G_PARAM_READABLE));
1816
1817         g_object_class_install_property (object_class,
1818                                          PROP_FIND_STATUS,
1819                                          g_param_spec_string ("find-status",
1820                                                               "Find Status Message",
1821                                                               "The find status message",
1822                                                               NULL,
1823                                                               G_PARAM_READABLE));
1824
1825         g_object_class_install_property (object_class,
1826                                          PROP_CONTINUOUS,
1827                                          g_param_spec_boolean ("continuous",
1828                                                                "Continuous",
1829                                                                "Continuous scrolling mode",
1830                                                                TRUE,
1831                                                                G_PARAM_READWRITE));
1832
1833         g_object_class_install_property (object_class,
1834                                          PROP_DUAL_PAGE,
1835                                          g_param_spec_boolean ("dual-page",
1836                                                                "Dual Page",
1837                                                                "Two pages visible at once",
1838                                                                FALSE,
1839                                                                G_PARAM_READWRITE));
1840         g_object_class_install_property (object_class,
1841                                          PROP_FULLSCREEN,
1842                                          g_param_spec_boolean ("fullscreen",
1843                                                                "Full Screen",
1844                                                                "Draw page in a fullscreen fashion",
1845                                                                FALSE,
1846                                                                G_PARAM_READWRITE));
1847         g_object_class_install_property (object_class,
1848                                          PROP_PRESENTATION,
1849                                          g_param_spec_boolean ("presentation",
1850                                                                "Presentation",
1851                                                                "Draw page in presentation mode",
1852                                                                TRUE,
1853                                                                G_PARAM_READWRITE));
1854
1855         g_object_class_install_property (object_class,
1856                                          PROP_SIZING_MODE,
1857                                          g_param_spec_enum ("sizing-mode",
1858                                                             "Sizing Mode",
1859                                                             "Sizing Mode",
1860                                                             EV_TYPE_SIZING_MODE,
1861                                                             EV_SIZING_FIT_WIDTH,
1862                                                             G_PARAM_READWRITE));
1863
1864         binding_set = gtk_binding_set_by_class (class);
1865
1866         add_scroll_binding_keypad (binding_set, GDK_Left,  GTK_SCROLL_STEP_BACKWARD, TRUE);
1867         add_scroll_binding_keypad (binding_set, GDK_Right, GTK_SCROLL_STEP_FORWARD,  TRUE);
1868         add_scroll_binding_keypad (binding_set, GDK_Up,    GTK_SCROLL_STEP_BACKWARD, FALSE);
1869         add_scroll_binding_keypad (binding_set, GDK_Down,  GTK_SCROLL_STEP_FORWARD,  FALSE);
1870 }
1871
1872 static void
1873 ev_view_init (EvView *view)
1874 {
1875         GTK_WIDGET_SET_FLAGS (view, GTK_CAN_FOCUS);
1876
1877         view->spacing = 10;
1878         view->scale = 1.0;
1879         view->current_page = 0;
1880         view->pressed_button = -1;
1881         view->cursor = EV_VIEW_CURSOR_NORMAL;
1882         view->drag_info.dragging = FALSE;
1883
1884         view->continuous = TRUE;
1885         view->dual_page = FALSE;
1886         view->presentation = FALSE;
1887         view->fullscreen = FALSE;
1888         view->sizing_mode = EV_SIZING_FIT_WIDTH;
1889         view->pending_scroll = SCROLL_TO_KEEP_POSITION;
1890 }
1891
1892 /*** Callbacks ***/
1893
1894 static void
1895 find_changed_cb (EvDocument *document, int page, EvView *view)
1896 {
1897         jump_to_find_page (view);
1898         jump_to_find_result (view);
1899         update_find_status_message (view);
1900
1901         if (view->current_page == page)
1902                 gtk_widget_queue_draw (GTK_WIDGET (view));
1903 }
1904
1905 static void
1906 job_finished_cb (EvPixbufCache *pixbuf_cache,
1907                  EvView        *view)
1908 {
1909         gtk_widget_queue_draw (GTK_WIDGET (view));
1910 }
1911
1912 static void
1913 page_changed_cb (EvPageCache *page_cache,
1914                  int          new_page,
1915                  EvView      *view)
1916 {
1917         if (view->current_page != new_page) {
1918
1919                 view_scroll_to_page (view, new_page);
1920
1921                 if (EV_IS_DOCUMENT_FIND (view->document)) {
1922                         view->find_page = new_page;
1923                         view->find_result = 0;
1924                         update_find_status_message (view);
1925                 }
1926         }
1927 }
1928
1929 static void on_adjustment_value_changed (GtkAdjustment  *adjustment,
1930                                          EvView *view)
1931 {
1932         view_update_adjustments (view);
1933 }
1934
1935 GtkWidget*
1936 ev_view_new (void)
1937 {
1938         GtkWidget *view;
1939
1940         view = g_object_new (EV_TYPE_VIEW, NULL);
1941
1942         return view;
1943 }
1944
1945 void
1946 ev_view_set_document (EvView     *view,
1947                       EvDocument *document)
1948 {
1949         g_return_if_fail (EV_IS_VIEW (view));
1950
1951         if (document != view->document) {
1952                 if (view->document) {
1953                         g_signal_handlers_disconnect_by_func (view->document,
1954                                                               find_changed_cb,
1955                                                               view);
1956                         g_object_unref (view->document);
1957                         view->page_cache = NULL;
1958
1959                 }
1960
1961                 view->document = document;
1962                 view->find_page = 0;
1963                 view->find_result = 0;
1964
1965                 if (view->document) {
1966                         g_object_ref (view->document);
1967                         if (EV_IS_DOCUMENT_FIND (view->document)) {
1968                                 g_signal_connect (view->document,
1969                                                   "find_changed",
1970                                                   G_CALLBACK (find_changed_cb),
1971                                                   view);
1972                         }
1973                         view->page_cache = ev_document_get_page_cache (view->document);
1974                         view->pending_scroll = SCROLL_TO_CURRENT_PAGE;
1975                         g_signal_connect (view->page_cache, "page-changed", G_CALLBACK (page_changed_cb), view);
1976                         view->pixbuf_cache = ev_pixbuf_cache_new (view->document);
1977                         g_signal_connect (view->pixbuf_cache, "job-finished", G_CALLBACK (job_finished_cb), view);
1978                 }
1979
1980                 gtk_widget_queue_resize (GTK_WIDGET (view));
1981         }
1982 }
1983
1984 /*** Zoom and sizing mode ***/
1985
1986 #define EPSILON 0.0000001
1987 void
1988 ev_view_set_zoom (EvView   *view,
1989                   double    factor,
1990                   gboolean  relative)
1991 {
1992         double scale;
1993
1994         if (relative)
1995                 scale = view->scale * factor;
1996         else
1997                 scale = factor;
1998
1999         scale = CLAMP (scale, MIN_SCALE, MAX_SCALE);
2000
2001         if (ABS (view->scale - scale) < EPSILON)
2002                 return;
2003         view->scale = scale;
2004
2005         gtk_widget_queue_resize (GTK_WIDGET (view));
2006 }
2007
2008 double
2009 ev_view_get_zoom (EvView *view)
2010 {
2011         return view->scale;
2012 }
2013
2014 void
2015 ev_view_set_continuous (EvView   *view,
2016                         gboolean  continuous)
2017 {
2018         g_return_if_fail (EV_IS_VIEW (view));
2019
2020         continuous = continuous != FALSE;
2021
2022         if (view->continuous != continuous) {
2023                 view->continuous = continuous;
2024                 view->pending_scroll = SCROLL_TO_CURRENT_PAGE;
2025                 gtk_widget_queue_resize (GTK_WIDGET (view));
2026         }
2027
2028         g_object_notify (G_OBJECT (view), "continuous");
2029 }
2030
2031 void
2032 ev_view_set_dual_page (EvView   *view,
2033                        gboolean  dual_page)
2034 {
2035         g_return_if_fail (EV_IS_VIEW (view));
2036
2037         dual_page = dual_page != FALSE;
2038
2039         if (view->dual_page == dual_page)
2040                 return;
2041
2042         view->pending_scroll = SCROLL_TO_CURRENT_PAGE;
2043         view->dual_page = dual_page;
2044         /* FIXME: if we're keeping the pixbuf cache around, we should extend the
2045          * preload_cache_size to be 2 if dual_page is set.
2046          */
2047         gtk_widget_queue_resize (GTK_WIDGET (view));
2048
2049         g_object_notify (G_OBJECT (view), "dual-page");
2050 }
2051
2052 void
2053 ev_view_set_fullscreen (EvView   *view,
2054                          gboolean  fullscreen)
2055 {
2056         g_return_if_fail (EV_IS_VIEW (view));
2057
2058         fullscreen = fullscreen != FALSE;
2059
2060         if (view->fullscreen != fullscreen) {
2061                 view->fullscreen = fullscreen;
2062                 gtk_widget_queue_resize (GTK_WIDGET (view));
2063         }
2064
2065         g_object_notify (G_OBJECT (view), "fullscreen");
2066 }
2067
2068 gboolean
2069 ev_view_get_fullscreen (EvView *view)
2070 {
2071         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
2072
2073         return view->fullscreen;
2074 }
2075
2076 void
2077 ev_view_set_presentation (EvView   *view,
2078                           gboolean  presentation)
2079 {
2080         g_return_if_fail (EV_IS_VIEW (view));
2081
2082         presentation = presentation != FALSE;
2083
2084         if (view->presentation == presentation)
2085                 return;
2086
2087         view->presentation = presentation;
2088         gtk_widget_queue_resize (GTK_WIDGET (view));
2089         if (GTK_WIDGET_REALIZED (view)) {
2090                 if (view->presentation)
2091                         gdk_window_set_background (GTK_WIDGET(view)->window,
2092                                                    &GTK_WIDGET (view)->style->black);
2093                 else
2094                         gdk_window_set_background (GTK_WIDGET(view)->window,
2095                                                    &GTK_WIDGET (view)->style->mid [GTK_STATE_NORMAL]);
2096         }
2097
2098
2099         g_object_notify (G_OBJECT (view), "presentation");
2100 }
2101
2102 gboolean
2103 ev_view_get_presentation (EvView *view)
2104 {
2105         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
2106
2107         return view->presentation;
2108 }
2109
2110 void
2111 ev_view_set_sizing_mode (EvView       *view,
2112                          EvSizingMode  sizing_mode)
2113 {
2114         g_return_if_fail (EV_IS_VIEW (view));
2115
2116         if (view->sizing_mode == sizing_mode)
2117                 return;
2118
2119         view->sizing_mode = sizing_mode;
2120         gtk_widget_queue_resize (GTK_WIDGET (view));
2121
2122         g_object_notify (G_OBJECT (view), "sizing-mode");
2123 }
2124
2125 EvSizingMode
2126 ev_view_get_sizing_mode (EvView *view)
2127 {
2128         g_return_val_if_fail (EV_IS_VIEW (view), EV_SIZING_FREE);
2129
2130         return view->sizing_mode;
2131 }
2132
2133 gboolean
2134 ev_view_can_zoom_in (EvView *view)
2135 {
2136         return view->scale * ZOOM_IN_FACTOR <= MAX_SCALE;
2137 }
2138
2139 gboolean
2140 ev_view_can_zoom_out (EvView *view)
2141 {
2142         return view->scale * ZOOM_OUT_FACTOR >= MIN_SCALE;
2143 }
2144
2145 void
2146 ev_view_zoom_in (EvView *view)
2147 {
2148         g_return_if_fail (view->sizing_mode == EV_SIZING_FREE);
2149
2150         view->pending_scroll = SCROLL_TO_CENTER;
2151         ev_view_set_zoom (view, ZOOM_IN_FACTOR, TRUE);
2152 }
2153
2154 void
2155 ev_view_zoom_out (EvView *view)
2156 {
2157         g_return_if_fail (view->sizing_mode == EV_SIZING_FREE);
2158
2159         view->pending_scroll = SCROLL_TO_CENTER;
2160         ev_view_set_zoom (view, ZOOM_OUT_FACTOR, TRUE);
2161 }
2162
2163 static double
2164 zoom_for_size_fit_width (int doc_width,
2165                          int doc_height,
2166                          int target_width,
2167                          int target_height,
2168                          int vsb_width)
2169 {
2170         double scale;
2171
2172         scale = (double)target_width / doc_width;
2173
2174         if (doc_height * scale > target_height)
2175                 scale = (double) (target_width - vsb_width) / doc_width;
2176
2177         return scale;
2178 }
2179
2180 static double
2181 zoom_for_size_best_fit (int doc_width,
2182                         int doc_height,
2183                         int target_width,
2184                         int target_height,
2185                         int vsb_width,
2186                         int hsb_width)
2187 {
2188         double w_scale;
2189         double h_scale;
2190
2191         w_scale = (double)target_width / doc_width;
2192         h_scale = (double)target_height / doc_height;
2193
2194         if (doc_height * w_scale > target_height)
2195                 w_scale = (double) (target_width - vsb_width) / doc_width;
2196         if (doc_width * h_scale > target_width)
2197                 h_scale = (double) (target_height - hsb_width) / doc_height;
2198
2199         return MIN (w_scale, h_scale);
2200 }
2201
2202
2203 static void
2204 ev_view_zoom_for_size_presentation (EvView *view,
2205                                     int     width,
2206                                     int     height)
2207 {
2208         int doc_width, doc_height;
2209         gdouble scale;
2210
2211         ev_page_cache_get_size (view->page_cache,
2212                                 view->current_page,
2213                                 1.0,
2214                                 &doc_width,
2215                                 &doc_height);
2216         scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, 0, 0);
2217         ev_view_set_zoom (view, scale, FALSE);
2218 }
2219
2220 static void
2221 ev_view_zoom_for_size_continuous_and_dual_page (EvView *view,
2222                            int     width,
2223                            int     height,
2224                            int     vsb_width,
2225                            int     hsb_height)
2226 {
2227         int doc_width, doc_height;
2228         GtkBorder border;
2229         gdouble scale;
2230
2231         ev_page_cache_get_max_width_size (view->page_cache,
2232                                           1.0,
2233                                           &doc_width, NULL);
2234         ev_page_cache_get_max_height_size (view->page_cache,
2235                                            1.0,
2236                                            NULL, &doc_height);
2237         compute_border (view, doc_width, doc_height, &border);
2238
2239         doc_width = doc_width * 2;
2240         width -= (2 * (border.left + border.right) + 3 * view->spacing);
2241         height -= (border.top + border.bottom + 2 * view->spacing - 1);
2242
2243         /* FIXME: We really need to calculate the overall height here, not the
2244          * page height.  We assume there's always a vertical scrollbar for
2245          * now.  We need to fix this. */
2246         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
2247                 scale = zoom_for_size_fit_width (doc_width, doc_height, width - vsb_width, height, 0);
2248         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
2249                 scale = zoom_for_size_best_fit (doc_width, doc_height, width - vsb_width, height, 0, hsb_height);
2250         else
2251                 g_assert_not_reached ();
2252
2253         ev_view_set_zoom (view, scale, FALSE);
2254 }
2255
2256 static void
2257 ev_view_zoom_for_size_continuous (EvView *view,
2258                                   int     width,
2259                                   int     height,
2260                                   int     vsb_width,
2261                                   int     hsb_height)
2262 {
2263         int doc_width, doc_height;
2264         GtkBorder border;
2265         gdouble scale;
2266
2267         ev_page_cache_get_max_width_size (view->page_cache,
2268                                           1.0,
2269                                           &doc_width, NULL);
2270         ev_page_cache_get_max_height_size (view->page_cache,
2271                                            1.0,
2272                                            NULL, &doc_height);
2273         compute_border (view, doc_width, doc_height, &border);
2274
2275         width -= (border.left + border.right + 2 * view->spacing);
2276         height -= (border.top + border.bottom + 2 * view->spacing - 1);
2277
2278         /* FIXME: We really need to calculate the overall height here, not the
2279          * page height.  We assume there's always a vertical scrollbar for
2280          * now.  We need to fix this. */
2281         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
2282                 scale = zoom_for_size_fit_width (doc_width, doc_height, width - vsb_width, height, 0);
2283         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
2284                 scale = zoom_for_size_best_fit (doc_width, doc_height, width - vsb_width, height, 0, hsb_height);
2285         else
2286                 g_assert_not_reached ();
2287
2288         ev_view_set_zoom (view, scale, FALSE);
2289 }
2290
2291 static void
2292 ev_view_zoom_for_size_dual_page (EvView *view,
2293                                  int     width,
2294                                  int     height,
2295                                  int     vsb_width,
2296                                  int     hsb_height)
2297 {
2298         GtkBorder border;
2299         gint doc_width, doc_height;
2300         gdouble scale;
2301         gint other_page;
2302
2303         other_page = view->current_page ^ 1;
2304
2305         /* Find the largest of the two. */
2306         ev_page_cache_get_size (view->page_cache,
2307                                 view->current_page,
2308                                 1.0,
2309                                 &doc_width, &doc_height);
2310
2311         if (other_page < ev_page_cache_get_n_pages (view->page_cache)) {
2312                 gint width_2, height_2;
2313                 ev_page_cache_get_size (view->page_cache,
2314                                         other_page,
2315                                         1.0,
2316                                         &width_2, &height_2);
2317                 if (width_2 > doc_width)
2318                         doc_width = width_2;
2319                 if (height_2 > doc_height)
2320                         doc_height = height_2;
2321         }
2322         compute_border (view, doc_width, doc_height, &border);
2323
2324         doc_width = doc_width * 2;
2325         width -= ((border.left + border.right)* 2 + 3 * view->spacing);
2326         height -= (border.top + border.bottom + 2 * view->spacing);
2327
2328         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
2329                 scale = zoom_for_size_fit_width (doc_width, doc_height, width, height, vsb_width);
2330         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
2331                 scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, vsb_width, hsb_height);
2332         else
2333                 g_assert_not_reached ();
2334
2335         ev_view_set_zoom (view, scale, FALSE);
2336 }
2337
2338 static void
2339 ev_view_zoom_for_size_single_page (EvView *view,
2340                                    int     width,
2341                                    int     height,
2342                                    int     vsb_width,
2343                                    int     hsb_height)
2344 {
2345         int doc_width, doc_height;
2346         GtkBorder border;
2347         gdouble scale;
2348
2349         ev_page_cache_get_size (view->page_cache,
2350                                 view->current_page,
2351                                 1.0,
2352                                 &doc_width,
2353                                 &doc_height);
2354         /* Get an approximate border */
2355         compute_border (view, width, height, &border);
2356
2357         width -= (border.left + border.right + 2 * view->spacing);
2358         height -= (border.top + border.bottom + 2 * view->spacing);
2359
2360         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
2361                 scale = zoom_for_size_fit_width (doc_width, doc_height, width, height, vsb_width);
2362         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
2363                 scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, vsb_width, hsb_height);
2364         else
2365                 g_assert_not_reached ();
2366
2367         ev_view_set_zoom (view, scale, FALSE);
2368 }
2369
2370 void
2371 ev_view_set_zoom_for_size (EvView *view,
2372                            int     width,
2373                            int     height,
2374                            int     vsb_width,
2375                            int     hsb_height)
2376 {
2377         g_return_if_fail (view->sizing_mode == EV_SIZING_FIT_WIDTH ||
2378                           view->sizing_mode == EV_SIZING_BEST_FIT);
2379         g_return_if_fail (width >= 0);
2380         g_return_if_fail (height >= 0);
2381
2382         if (view->document == NULL)
2383                 return;
2384
2385         if (view->presentation)
2386                 ev_view_zoom_for_size_presentation (view, width, height);
2387         else if (view->continuous && view->dual_page)
2388                 ev_view_zoom_for_size_continuous_and_dual_page (view, width, height, vsb_width, hsb_height);
2389         else if (view->continuous)
2390                 ev_view_zoom_for_size_continuous (view, width, height, vsb_width, hsb_height);
2391         else if (view->dual_page)
2392                 ev_view_zoom_for_size_dual_page (view, width, height, vsb_width, hsb_height);
2393         else
2394                 ev_view_zoom_for_size_single_page (view, width, height, vsb_width, hsb_height);
2395 }
2396
2397 /*** Status text messages ***/
2398
2399 const char *
2400 ev_view_get_status (EvView *view)
2401 {
2402         g_return_val_if_fail (EV_IS_VIEW (view), NULL);
2403
2404         return view->status;
2405 }
2406
2407 static void
2408 ev_view_set_status (EvView *view, const char *message)
2409 {
2410         g_return_if_fail (EV_IS_VIEW (view));
2411
2412         if (message != view->status) {
2413                 g_free (view->status);
2414                 view->status = g_strdup (message);
2415                 g_object_notify (G_OBJECT (view), "status");
2416         }
2417 }
2418
2419 static void
2420 update_find_status_message (EvView *view)
2421 {
2422         char *message;
2423
2424         if (view->current_page == view->find_page) {
2425                 int results;
2426
2427                 results = ev_document_find_get_n_results
2428                                 (EV_DOCUMENT_FIND (view->document),
2429                                  view->current_page);
2430                 /* TRANS: Sometimes this could be better translated as
2431                    "%d hit(s) on this page".  Therefore this string
2432                    contains plural cases. */
2433                 message = g_strdup_printf (ngettext ("%d found on this page",
2434                                                      "%d found on this page",
2435                                                      results),
2436                                            results);
2437         } else {
2438                 double percent;
2439
2440                 ev_document_doc_mutex_lock ();
2441                 percent = ev_document_find_get_progress
2442                                 (EV_DOCUMENT_FIND (view->document));
2443                 ev_document_doc_mutex_unlock ();
2444                 if (percent >= (1.0 - 1e-10)) {
2445                         message = g_strdup (_("Not found"));
2446                 } else {
2447                         message = g_strdup_printf (_("%3d%% remaining to search"),
2448                                                    (int) ((1.0 - percent) * 100));
2449                 }
2450
2451         }
2452         ev_view_set_find_status (view, message);
2453 }
2454
2455 const char *
2456 ev_view_get_find_status (EvView *view)
2457 {
2458         g_return_val_if_fail (EV_IS_VIEW (view), NULL);
2459
2460         return view->find_status;
2461 }
2462
2463 static void
2464 ev_view_set_find_status (EvView *view, const char *message)
2465 {
2466         g_return_if_fail (EV_IS_VIEW (view));
2467
2468         g_free (view->find_status);
2469         view->find_status = g_strdup (message);
2470         g_object_notify (G_OBJECT (view), "find-status");
2471 }
2472
2473 /*** Find ***/
2474
2475 static void
2476 jump_to_find_result (EvView *view)
2477 {
2478         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
2479         EvRectangle rect;
2480         GdkRectangle view_rect;
2481         int n_results;
2482         int page = view->find_page;
2483
2484         ev_document_doc_mutex_lock ();
2485         n_results = ev_document_find_get_n_results (find, page);
2486         ev_document_doc_mutex_unlock ();
2487
2488         if (n_results > view->find_result) {
2489                 ev_document_doc_mutex_lock ();
2490                 ev_document_find_get_result
2491                         (find, page, view->find_result, &rect);
2492                 ev_document_doc_mutex_unlock ();
2493
2494                 doc_rect_to_view_rect (view, page, &rect, &view_rect);
2495                 ensure_rectangle_is_visible (view, &view_rect);
2496         }
2497 }
2498
2499 static void
2500 jump_to_find_page (EvView *view)
2501 {
2502         int n_pages, i;
2503
2504         n_pages = ev_page_cache_get_n_pages (view->page_cache);
2505
2506         for (i = 0; i < n_pages; i++) {
2507                 int has_results;
2508                 int page;
2509
2510                 page = i + view->find_page;
2511                 if (page >= n_pages) {
2512                         page = page - n_pages;
2513                 }
2514
2515                 has_results = ev_document_find_page_has_results
2516                                 (EV_DOCUMENT_FIND (view->document), page);
2517                 if (has_results == -1) {
2518                         view->find_page = page;
2519                         break;
2520                 } else if (has_results == 1) {
2521                         ev_page_cache_set_current_page (view->page_cache, page);
2522                         jump_to_find_result (view);
2523                         break;
2524                 }
2525         }
2526 }
2527
2528 gboolean
2529 ev_view_can_find_next (EvView *view)
2530 {
2531         int n_results = 0;
2532
2533         if (EV_IS_DOCUMENT_FIND (view->document)) {
2534                 EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
2535
2536                 ev_document_doc_mutex_lock ();
2537                 n_results = ev_document_find_get_n_results (find, view->current_page);
2538                 ev_document_doc_mutex_unlock ();
2539         }
2540
2541         return n_results > 0;
2542 }
2543
2544 void
2545 ev_view_find_next (EvView *view)
2546 {
2547         EvPageCache *page_cache;
2548         int n_results, n_pages;
2549         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
2550
2551         page_cache = ev_document_get_page_cache (view->document);
2552         ev_document_doc_mutex_lock ();
2553         n_results = ev_document_find_get_n_results (find, view->current_page);
2554         ev_document_doc_mutex_unlock ();
2555
2556         n_pages = ev_page_cache_get_n_pages (page_cache);
2557
2558         view->find_result++;
2559
2560         if (view->find_result >= n_results) {
2561                 view->find_result = 0;
2562                 view->find_page++;
2563
2564                 if (view->find_page >= n_pages) {
2565                         view->find_page = 0;
2566                 }
2567
2568                 jump_to_find_page (view);
2569         } else {
2570                 jump_to_find_result (view);
2571                 gtk_widget_queue_draw (GTK_WIDGET (view));
2572         }
2573 }
2574
2575 void
2576 ev_view_find_previous (EvView *view)
2577 {
2578         int n_results, n_pages;
2579         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
2580         EvPageCache *page_cache;
2581
2582         page_cache = ev_document_get_page_cache (view->document);
2583
2584         ev_document_doc_mutex_lock ();
2585         n_results = ev_document_find_get_n_results (find, view->current_page);
2586         ev_document_doc_mutex_unlock ();
2587
2588         n_pages = ev_page_cache_get_n_pages (page_cache);
2589
2590         view->find_result--;
2591
2592         if (view->find_result < 0) {
2593                 view->find_result = 0;
2594                 view->find_page--;
2595
2596                 if (view->find_page < 0) {
2597                         view->find_page = n_pages - 1;
2598                 }
2599
2600                 jump_to_find_page (view);
2601         } else {
2602                 jump_to_find_result (view);
2603                 gtk_widget_queue_draw (GTK_WIDGET (view));
2604         }
2605 }
2606
2607 /*** Selections ***/
2608
2609 static void
2610 compute_selections (EvView *view, GdkRectangle *view_rect)
2611 {
2612         int n_pages, i;
2613
2614         clear_selection (view);
2615
2616         n_pages = ev_page_cache_get_n_pages (view->page_cache);
2617         for (i = 0; i < n_pages; i++) {
2618                 GdkRectangle page_area;
2619                 GtkBorder border;
2620
2621                 if (get_page_extents (view, i, &page_area, &border)) {
2622                         GdkRectangle overlap;
2623
2624                         if (gdk_rectangle_intersect (&page_area, view_rect, &overlap)) {
2625                                 EvViewSelection *selection;
2626
2627                                 selection = g_new0 (EvViewSelection, 1);
2628                                 selection->page = i;
2629                                 view_rect_to_doc_rect (view, &overlap, &page_area,
2630                                                        &(selection->rect));
2631
2632                                 view->selections = g_list_append
2633                                                 (view->selections, selection);
2634                         }
2635                 }
2636         }
2637 }
2638
2639 static void
2640 clear_selection (EvView *view)
2641 {
2642         g_list_foreach (view->selections, (GFunc)g_free, NULL);
2643         view->selections = NULL;
2644 }
2645
2646
2647 void
2648 ev_view_select_all (EvView *view)
2649 {
2650         int n_pages, i;
2651
2652         clear_selection (view);
2653
2654         n_pages = ev_page_cache_get_n_pages (view->page_cache);
2655         for (i = 0; i < n_pages; i++) {
2656                 int width, height;
2657                 EvViewSelection *selection;
2658
2659                 ev_page_cache_get_size (view->page_cache,
2660                                         i, 1.0, &width, &height);
2661
2662                 selection = g_new0 (EvViewSelection, 1);
2663                 selection->page = i;
2664                 selection->rect.x1 = selection->rect.y1 = 0;
2665                 selection->rect.x2 = width;
2666                 selection->rect.y2 = height;
2667
2668                 view->selections = g_list_append (view->selections, selection);
2669         }
2670
2671         gtk_widget_queue_draw (GTK_WIDGET (view));
2672 }
2673
2674 static char *
2675 get_selected_text (EvView *ev_view)
2676 {
2677         GString *text;
2678         GList *l;
2679
2680         text = g_string_new (NULL);
2681
2682         ev_document_doc_mutex_lock ();
2683
2684         for (l = ev_view->selections; l != NULL; l = l->next) {
2685                 EvViewSelection *selection = (EvViewSelection *)l->data;
2686                 char *tmp;
2687
2688                 tmp = ev_document_get_text (ev_view->document,
2689                                             selection->page,
2690                                             &selection->rect);
2691                 g_string_append (text, tmp);
2692                 g_free (tmp);
2693         }
2694
2695         ev_document_doc_mutex_unlock ();
2696
2697         return g_string_free (text, FALSE);
2698 }
2699
2700 void
2701 ev_view_copy (EvView *ev_view)
2702 {
2703         GtkClipboard *clipboard;
2704         char *text;
2705
2706         if (!ev_document_can_get_text (ev_view->document)) {
2707                 return;
2708         }
2709
2710         text = get_selected_text (ev_view);
2711         clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view),
2712                                               GDK_SELECTION_CLIPBOARD);
2713         gtk_clipboard_set_text (clipboard, text, -1);
2714         g_free (text);
2715 }
2716
2717 static void
2718 ev_view_primary_get_cb (GtkClipboard     *clipboard,
2719                         GtkSelectionData *selection_data,
2720                         guint             info,
2721                         gpointer          data)
2722 {
2723         EvView *ev_view = EV_VIEW (data);
2724         char *text;
2725
2726         if (!ev_document_can_get_text (ev_view->document)) {
2727                 return;
2728         }
2729
2730         text = get_selected_text (ev_view);
2731         gtk_selection_data_set_text (selection_data, text, -1);
2732         g_free (text);
2733 }
2734
2735 static void
2736 ev_view_primary_clear_cb (GtkClipboard *clipboard,
2737                           gpointer      data)
2738 {
2739         EvView *view = EV_VIEW (data);
2740
2741         clear_selection (view);
2742 }
2743
2744 static void
2745 ev_view_update_primary_selection (EvView *ev_view)
2746 {
2747         GtkClipboard *clipboard;
2748
2749         clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view),
2750                                               GDK_SELECTION_PRIMARY);
2751
2752         if (ev_view->selections) {
2753                 if (!gtk_clipboard_set_with_owner (clipboard,
2754                                                    targets,
2755                                                    G_N_ELEMENTS (targets),
2756                                                    ev_view_primary_get_cb,
2757                                                    ev_view_primary_clear_cb,
2758                                                    G_OBJECT (ev_view)))
2759                         ev_view_primary_clear_cb (clipboard, ev_view);
2760         } else {
2761                 if (gtk_clipboard_get_owner (clipboard) == G_OBJECT (ev_view))
2762                         gtk_clipboard_clear (clipboard);
2763         }
2764 }
2765
2766 /*** Cursor operations ***/
2767
2768 static GdkCursor *
2769 ev_view_create_invisible_cursor(void)
2770 {
2771        GdkBitmap *empty;
2772        GdkColor black = { 0, 0, 0, 0 };
2773        static char bits[] = { 0x00 };
2774
2775        empty = gdk_bitmap_create_from_data (NULL, bits, 1, 1);
2776
2777        return gdk_cursor_new_from_pixmap (empty, empty, &black, &black, 0, 0);
2778 }
2779
2780 static void
2781 ev_view_set_cursor (EvView *view, EvViewCursor new_cursor)
2782 {
2783         GdkCursor *cursor = NULL;
2784         GdkDisplay *display;
2785         GtkWidget *widget;
2786
2787         if (view->cursor == new_cursor) {
2788                 return;
2789         }
2790
2791         widget = gtk_widget_get_toplevel (GTK_WIDGET (view));
2792         display = gtk_widget_get_display (widget);
2793         view->cursor = new_cursor;
2794
2795         switch (new_cursor) {
2796                 case EV_VIEW_CURSOR_NORMAL:
2797                         gdk_window_set_cursor (widget->window, NULL);
2798                         break;
2799                 case EV_VIEW_CURSOR_LINK:
2800                         cursor = gdk_cursor_new_for_display (display, GDK_HAND2);
2801                         break;
2802                 case EV_VIEW_CURSOR_WAIT:
2803                         cursor = gdk_cursor_new_for_display (display, GDK_WATCH);
2804                         break;
2805                 case EV_VIEW_CURSOR_HIDDEN:
2806                         cursor = ev_view_create_invisible_cursor ();
2807                         break;
2808                 case EV_VIEW_CURSOR_DRAG:
2809                         cursor = gdk_cursor_new_for_display (display, GDK_FLEUR);
2810                         break;
2811         }
2812
2813         if (cursor) {
2814                 gdk_window_set_cursor (widget->window, cursor);
2815                 gdk_cursor_unref (cursor);
2816                 gdk_flush();
2817         }
2818 }
2819
2820 void
2821 ev_view_hide_cursor (EvView *view)
2822 {
2823        ev_view_set_cursor (view, EV_VIEW_CURSOR_HIDDEN);
2824 }
2825
2826 void
2827 ev_view_show_cursor (EvView *view)
2828 {
2829        ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
2830 }
2831
2832 /*** Enum description for usage in signal ***/
2833
2834 GType
2835 ev_sizing_mode_get_type (void)
2836 {
2837   static GType etype = 0;
2838   if (etype == 0) {
2839     static const GEnumValue values[] = {
2840       { EV_SIZING_FIT_WIDTH, "EV_SIZING_FIT_WIDTH", "fit-width" },
2841       { EV_SIZING_BEST_FIT, "EV_SIZING_BEST_FIT", "best-fit" },
2842       { EV_SIZING_FREE, "EV_SIZING_FREE", "free" },
2843       { 0, NULL, NULL }
2844     };
2845     etype = g_enum_register_static ("EvSizingMode", values);
2846   }
2847   return etype;
2848 }
2849