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