shell/ev-view.c

   1 /* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8; c-indent-level: 8 -*- */
   2 /* this file is part of evince, a gnome document viewer
   3  *
   4  *  Copyright (C) 2004 Red Hat, Inc
   5  *
   6  * Evince is free software; you can redistribute it and/or modify it
   7  * under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * Evince is distributed in the hope that it will be useful, but
  12  * WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
  19  */
  20
  21 #include <math.h>
  22 #include <gtk/gtkalignment.h>
  23 #include <glib/gi18n.h>
  24 #include <gtk/gtkbindings.h>
  25 #include <gtk/gtkselection.h>
  26 #include <gtk/gtkclipboard.h>
  27 #include <gdk/gdkkeysyms.h>
  28 #include <libgnomevfs/gnome-vfs-utils.h>
  29
  30 #include "ev-marshal.h"
  31 #include "ev-view.h"
  32 #include "ev-document-find.h"
  33 #include "ev-document-misc.h"
  34 #include "ev-debug.h"
  35 #include "ev-job-queue.h"
  36 #include "ev-page-cache.h"
  37 #include "ev-pixbuf-cache.h"
  38
  39 #define EV_VIEW_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass), EV_TYPE_VIEW, EvViewClass))
  40 #define EV_IS_VIEW_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), EV_TYPE_VIEW))
  41 #define EV_VIEW_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj), EV_TYPE_VIEW, EvViewClass))
  42
  43 enum {
  44         PROP_0,
  45         PROP_STATUS,
  46         PROP_FIND_STATUS,
  47         PROP_CONTINUOUS,
  48         PROP_DUAL_PAGE,
  49         PROP_FULLSCREEN,
  50         PROP_PRESENTATION,
  51         PROP_SIZING_MODE,
  52 };
  53
  54 enum {
  55         SIGNAL_SCROLL_VIEW,
  56         SIGNAL_ZOOM_INVALID,
  57         N_SIGNALS,
  58 };
  59
  60 enum {
  61         TARGET_STRING,
  62         TARGET_TEXT,
  63         TARGET_COMPOUND_TEXT,
  64         TARGET_UTF8_STRING,
  65         TARGET_TEXT_BUFFER_CONTENTS
  66 };
  67
  68 static const GtkTargetEntry targets[] = {
  69         { "STRING", 0, TARGET_STRING },
  70         { "TEXT",   0, TARGET_TEXT },
  71         { "COMPOUND_TEXT", 0, TARGET_COMPOUND_TEXT },
  72         { "UTF8_STRING", 0, TARGET_UTF8_STRING },
  73 };
  74
  75 static guint signals[N_SIGNALS];
  76
  77 typedef enum {
  78         EV_VIEW_CURSOR_NORMAL,
  79         EV_VIEW_CURSOR_LINK,
  80         EV_VIEW_CURSOR_WAIT,
  81         EV_VIEW_CURSOR_HIDDEN,
  82         EV_VIEW_CURSOR_DRAG
  83 } EvViewCursor;
  84
  85 #define ZOOM_IN_FACTOR  1.2
  86 #define ZOOM_OUT_FACTOR (1.0/ZOOM_IN_FACTOR)
  87
  88 #define MIN_SCALE 0.05409
  89 #define MAX_SCALE 6.0
  90
  91 typedef struct {
  92         EvRectangle rect;
  93         int page;
  94 } EvViewSelection;
  95
  96 typedef struct {
  97         gboolean dragging;
  98         GdkPoint start;
  99         gdouble hadj;
 100         gdouble vadj;
 101 } DragInfo;
 102
 103 typedef enum {
 104         SCROLL_TO_KEEP_POSITION,
 105         SCROLL_TO_CURRENT_PAGE,
 106         SCROLL_TO_CENTER
 107 } PendingScroll;
 108
 109 struct _EvView {
 110         GtkWidget parent_instance;
 111
 112         EvDocument *document;
 113
 114         char *status;
 115         char *find_status;
 116
 117         int scroll_x;
 118         int scroll_y;
 119
 120         DragInfo drag_info;
 121         gboolean pressed_button;
 122         GdkPoint selection_start;
 123         GList *selections;
 124         EvViewCursor cursor;
 125
 126         GtkAdjustment *hadjustment;
 127         GtkAdjustment *vadjustment;
 128
 129         EvPageCache *page_cache;
 130         EvPixbufCache *pixbuf_cache;
 131
 132         gint start_page;
 133         gint end_page;
 134         gint current_page;
 135
 136         EvJobRender *current_job;
 137
 138         int find_page;
 139         int find_result;
 140         int spacing;
 141
 142         double scale;
 143         GtkBorder border;
 144
 145         gboolean continuous;
 146         gboolean dual_page;
 147         gboolean fullscreen;
 148         gboolean presentation;
 149         EvSizingMode sizing_mode;
 150
 151         PendingScroll pending_scroll;
 152         gboolean pending_resize;
 153 };
 154
 155 struct _EvViewClass {
 156         GtkWidgetClass parent_class;
 157
 158         void    (*set_scroll_adjustments) (EvView         *view,
 159                                            GtkAdjustment  *hadjustment,
 160                                            GtkAdjustment  *vadjustment);
 161         void    (*scroll_view)            (EvView         *view,
 162                                            GtkScrollType   scroll,
 163                                            gboolean        horizontal);
 164         void    (*zoom_invalid)           (EvView         *view);
 165 };
 166
 167 /*** Scrolling ***/
 168 static void       view_update_adjustments                    (EvView             *view);
 169 static void       ev_view_set_scroll_adjustments             (EvView             *view,
 170                                                               GtkAdjustment      *hadjustment,
 171                                                               GtkAdjustment      *vadjustment);
 172 static void       view_update_range_and_current_page         (EvView             *view);
 173 static void       view_scroll_to_page                        (EvView             *view,
 174                                                               gint                new_page);
 175 static void       set_scroll_adjustment                      (EvView             *view,
 176                                                               GtkOrientation      orientation,
 177                                                               GtkAdjustment      *adjustment);
 178 static void       ev_view_set_scroll_adjustments             (EvView             *view,
 179                                                               GtkAdjustment      *hadjustment,
 180                                                               GtkAdjustment      *vadjustment);
 181 static void       add_scroll_binding_keypad                  (GtkBindingSet      *binding_set,
 182                                                               guint               keyval,
 183                                                               GtkScrollType       scroll,
 184                                                               gboolean            horizontal);
 185 static void       ev_view_scroll_view                        (EvView             *view,
 186                                                               GtkScrollType       scroll,
 187                                                               gboolean            horizontal);
 188 static void       ensure_rectangle_is_visible                (EvView             *view,
 189                                                               GdkRectangle       *rect);
 190
 191 /*** Geometry computations ***/
 192 static void       compute_border                             (EvView             *view,
 193                                                               int                 width,
 194                                                               int                 height,
 195                                                               GtkBorder          *border);
 196 static gboolean   get_page_extents                           (EvView             *view,
 197                                                               gint                page,
 198                                                               GdkRectangle       *page_area,
 199                                                               GtkBorder          *border);
 200 static void       view_rect_to_doc_rect                      (EvView             *view,
 201                                                               GdkRectangle       *view_rect,
 202                                                               GdkRectangle       *page_area,
 203                                                               EvRectangle        *doc_rect);
 204 static void       doc_rect_to_view_rect                      (EvView             *view,
 205                                                               int                 page,
 206                                                               EvRectangle        *doc_rect,
 207                                                               GdkRectangle       *view_rect);
 208 static void       get_bounding_box_size                      (EvView             *view,
 209                                                               int                *max_width,
 210                                                               int                *max_height);
 211 static void       find_page_at_location                      (EvView             *view,
 212                                                               gdouble             x,
 213                                                               gdouble             y,
 214                                                               gint               *page,
 215                                                               gint               *x_offset,
 216                                                               gint               *y_offset);
 217
 218 /*** Hyperrefs ***/
 219 static EvLink*    get_link_at_location                       (EvView             *view,
 220                                                               gdouble             x,
 221                                                               gdouble             y);
 222 static void       go_to_link                                 (EvView             *view,
 223                                                               EvLink             *link);
 224 static char*      status_message_from_link                   (EvView             *view,
 225                                                               EvLink             *link);
 226
 227 /*** GtkWidget implementation ***/
 228 static void       ev_view_size_request_continuous_dual_page  (EvView             *view,
 229                                                               GtkRequisition     *requisition);
 230 static void       ev_view_size_request_continuous            (EvView             *view,
 231                                                               GtkRequisition     *requisition);
 232 static void       ev_view_size_request_dual_page             (EvView             *view,
 233                                                               GtkRequisition     *requisition);
 234 static void       ev_view_size_request_single_page           (EvView             *view,
 235                                                               GtkRequisition     *requisition);
 236 static void       ev_view_size_request                       (GtkWidget          *widget,
 237                                                               GtkRequisition     *requisition);
 238 static void       ev_view_size_allocate                      (GtkWidget          *widget,
 239                                                               GtkAllocation      *allocation);
 240 static void       ev_view_realize                            (GtkWidget          *widget);
 241 static void       ev_view_unrealize                          (GtkWidget          *widget);
 242 static gboolean   ev_view_scroll_event                       (GtkWidget          *widget,
 243                                                               GdkEventScroll     *event);
 244 static gboolean   ev_view_expose_event                       (GtkWidget          *widget,
 245                                                               GdkEventExpose     *event);
 246 static gboolean   ev_view_button_press_event                 (GtkWidget          *widget,
 247                                                               GdkEventButton     *event);
 248 static gboolean   ev_view_motion_notify_event                (GtkWidget          *widget,
 249                                                               GdkEventMotion     *event);
 250 static gboolean   ev_view_button_release_event               (GtkWidget          *widget,
 251                                                               GdkEventButton     *event);
 252
 253 /*** Drawing ***/
 254 static guint32    ev_gdk_color_to_rgb                        (const GdkColor     *color);
 255 static void       draw_rubberband                            (GtkWidget          *widget,
 256                                                               GdkWindow          *window,
 257                                                               const GdkRectangle *rect,
 258                                                               guchar              alpha);
 259 static void       highlight_find_results                     (EvView             *view,
 260                                                               int                 page);
 261 static void       draw_one_page                              (EvView             *view,
 262                                                               gint                page,
 263                                                               GdkRectangle       *page_area,
 264                                                               GtkBorder          *border,
 265                                                               GdkRectangle       *expose_area);
 266
 267 /*** Callbacks ***/
 268 static void       find_changed_cb                            (EvDocument         *document,
 269                                                               int                 page,
 270                                                               EvView             *view);
 271 static void       job_finished_cb                            (EvPixbufCache      *pixbuf_cache,
 272                                                               EvView             *view);
 273 static void       page_changed_cb                            (EvPageCache        *page_cache,
 274                                                               int                 new_page,
 275                                                               EvView             *view);
 276 static void       on_adjustment_value_changed                (GtkAdjustment      *adjustment,
 277                                                               EvView             *view);
 278
 279 /*** GObject ***/
 280 static void       ev_view_finalize                           (GObject            *object);
 281 static void       ev_view_destroy                            (GtkObject          *object);
 282 static void       ev_view_set_property                       (GObject            *object,
 283                                                               guint               prop_id,
 284                                                               const GValue       *value,
 285                                                               GParamSpec         *pspec);
 286 static void       ev_view_get_property                       (GObject            *object,
 287                                                               guint               prop_id,
 288                                                               GValue             *value,
 289                                                               GParamSpec         *pspec);
 290 static void       ev_view_class_init                         (EvViewClass        *class);
 291 static void       ev_view_init                               (EvView             *view);
 292
 293 /*** Zoom and sizing ***/
 294 static double   zoom_for_size_fit_width                      (int doc_width,
 295                                                               int doc_height,
 296                                                               int target_width,
 297                                                               int target_height,
 298                                                               int vsb_width);
 299 static double   zoom_for_size_best_fit                       (int doc_width,
 300                                                               int doc_height,
 301                                                               int target_width,
 302                                                               int target_height,
 303                                                               int vsb_width,
 304                                                               int hsb_width);
 305 static void     ev_view_zoom_for_size_presentation           (EvView *view,
 306                                                               int     width,
 307                                                               int     height);
 308 static void     ev_view_zoom_for_size_continuous_and_dual_page (EvView *view,
 309                                                                 int     width,
 310                                                                 int     height,
 311                                                                 int     vsb_width,
 312                                                                 int     hsb_height);
 313 static void     ev_view_zoom_for_size_continuous               (EvView *view,
 314                                                                 int     width,
 315                                                                 int     height,
 316                                                                 int     vsb_width,
 317                                                                 int     hsb_height);
 318 static void     ev_view_zoom_for_size_dual_page                (EvView *view,
 319                                                                 int     width,
 320                                                                 int     height,
 321                                                                 int     vsb_width,
 322                                                                 int     hsb_height);
 323 static void     ev_view_zoom_for_size_single_page              (EvView *view,
 324                                                                 int     width,
 325                                                                 int     height,
 326                                                                 int     vsb_width,
 327                                                                 int     hsb_height);
 328 /*** Cursors ***/
 329 static GdkCursor* ev_view_create_invisible_cursor            (void);
 330 static void       ev_view_set_cursor                         (EvView             *view,
 331                                                               EvViewCursor        new_cursor);
 332
 333 /*** Status messages ***/
 334 static void       ev_view_set_status                         (EvView             *view,
 335                                                               const char         *message);
 336 static void       update_find_status_message                 (EvView             *view);
 337 static void       ev_view_set_find_status                    (EvView             *view,
 338                                                               const char         *message);
 339 /*** Find ***/
 340 static void       jump_to_find_result                        (EvView             *view);
 341 static void       jump_to_find_page                          (EvView             *view);
 342
 343 /*** Selection ***/
 344 static void       compute_selections                         (EvView             *view,
 345                                                               GdkRectangle       *view_rect);
 346 static void       clear_selection                            (EvView             *view);
 347 static char*      get_selected_text                          (EvView             *ev_view);
 348 static void       ev_view_primary_get_cb                     (GtkClipboard       *clipboard,
 349                                                               GtkSelectionData   *selection_data,
 350                                                               guint               info,
 351                                                               gpointer            data);
 352 static void       ev_view_primary_clear_cb                   (GtkClipboard       *clipboard,
 353                                                               gpointer            data);
 354 static void       ev_view_update_primary_selection           (EvView             *ev_view);
 355
 356
 357 G_DEFINE_TYPE (EvView, ev_view, GTK_TYPE_WIDGET)
 358
 359 static void
 360 view_update_adjustments (EvView *view)
 361 {
 362         int dx = 0, dy = 0;
 363
 364         if (! GTK_WIDGET_REALIZED (view))
 365                 return;
 366
 367         if (view->hadjustment) {
 368                 dx = view->scroll_x - view->hadjustment->value;
 369                 view->scroll_x = view->hadjustment->value;
 370         } else {
 371                 view->scroll_x = 0;
 372         }
 373
 374         if (view->vadjustment) {
 375                 dy = view->scroll_y - view->vadjustment->value;
 376                 view->scroll_y = view->vadjustment->value;
 377         } else {
 378                 view->scroll_y = 0;
 379         }
 380
 381
 382         if (view->pending_resize)
 383                 gtk_widget_queue_draw (GTK_WIDGET (view));
 384         else
 385                 gdk_window_scroll (GTK_WIDGET (view)->window, dx, dy);
 386
 387
 388         if (view->document)
 389                 view_update_range_and_current_page (view);
 390 }
 391
 392 static void
 393 view_set_adjustment_values (EvView         *view,
 394                             GtkOrientation  orientation)
 395 {
 396         GtkWidget *widget = GTK_WIDGET (view);
 397         GtkAdjustment *adjustment;
 398         int requisition;
 399         int allocation;
 400
 401         double factor;
 402         gint new_value;
 403
 404         if (orientation == GTK_ORIENTATION_HORIZONTAL)  {
 405                 requisition = widget->requisition.width;
 406                 allocation = widget->allocation.width;
 407                 adjustment = view->hadjustment;
 408         } else {
 409                 requisition = widget->requisition.height;
 410                 allocation = widget->allocation.height;
 411                 adjustment = view->vadjustment;
 412         }
 413
 414         if (!adjustment)
 415                 return;
 416
 417         factor = 1.0;
 418         switch (view->pending_scroll) {
 419                 case SCROLL_TO_KEEP_POSITION:
 420                         factor = adjustment->value / adjustment->upper;
 421                         break;
 422                 case SCROLL_TO_CURRENT_PAGE:
 423                         break;
 424                 case SCROLL_TO_CENTER:
 425                         factor = (adjustment->value + adjustment->page_size * 0.5) / adjustment->upper;
 426                         break;
 427         }
 428
 429         adjustment->page_size = allocation;
 430         adjustment->step_increment = allocation * 0.1;
 431         adjustment->page_increment = allocation * 0.9;
 432         adjustment->lower = 0;
 433         adjustment->upper = MAX (allocation, requisition);
 434
 435         switch (view->pending_scroll) {
 436                 case SCROLL_TO_KEEP_POSITION:
 437                         new_value = CLAMP (adjustment->upper * factor, 0, adjustment->upper - adjustment->page_size);
 438                         gtk_adjustment_set_value (adjustment, new_value);
 439                         break;
 440                 case SCROLL_TO_CURRENT_PAGE:
 441                         if (orientation == GTK_ORIENTATION_VERTICAL) {
 442                                 view_scroll_to_page (view, view->current_page);
 443                         }
 444                         break;
 445                 case SCROLL_TO_CENTER:
 446                         new_value = CLAMP (adjustment->upper * factor - adjustment->page_size * 0.5, 0, adjustment->upper - adjustment->page_size);
 447                         gtk_adjustment_set_value (adjustment, new_value);
 448                         break;
 449         }
 450
 451         gtk_adjustment_changed (adjustment);
 452 }
 453
 454 static void
 455 view_update_range_and_current_page (EvView *view)
 456 {
 457         /* Presentation trumps all other modes */
 458         if (view->presentation) {
 459                 view->start_page = view->current_page;
 460                 view->end_page = view->current_page;
 461         } else if (view->continuous) {
 462                 GdkRectangle current_area, unused, page_area;
 463                 gint current_page;
 464                 gboolean found = FALSE;
 465                 int i;
 466
 467                 get_bounding_box_size (view, &(page_area.width), &(page_area.height));
 468                 page_area.x = view->spacing;
 469                 page_area.y = view->spacing;
 470
 471                 if (view->hadjustment) {
 472                         current_area.x = view->hadjustment->value;
 473                         current_area.width = view->hadjustment->page_size;
 474                 } else {
 475                         current_area.x = page_area.x;
 476                         current_area.width = page_area.width;
 477                 }
 478
 479                 if (view->vadjustment) {
 480                         current_area.y = view->vadjustment->value;
 481                         current_area.height = view->vadjustment->page_size;
 482                 } else {
 483                         current_area.y = page_area.y;
 484                         current_area.height = page_area.height;
 485                 }
 486
 487                 for (i = 0; i < ev_page_cache_get_n_pages (view->page_cache); i++) {
 488                         if (gdk_rectangle_intersect (&current_area, &page_area, &unused)) {
 489                                 if (! found) {
 490                                         view->start_page = i;
 491                                         found = TRUE;
 492
 493                                 }
 494                                 view->end_page = i;
 495                         } else if (found) {
 496                                 break;
 497                         }
 498                         if (view->dual_page) {
 499                                 if (i % 2 == 0) {
 500                                         page_area.x += page_area.width + view->spacing;
 501                                 } else {
 502                                         page_area.x = view->spacing;
 503                                         page_area.y += page_area.height + view->spacing;
 504                                 }
 505                         } else {
 506                                 page_area.y += page_area.height + view->spacing;
 507                         }
 508                 }
 509
 510                 current_page = ev_page_cache_get_current_page (view->page_cache);
 511
 512                 if (current_page < view->start_page || current_page > view->end_page) {
 513                         view->current_page = view->start_page;
 514                         ev_page_cache_set_current_page (view->page_cache, view->start_page);
 515                 }
 516         } else {
 517                 if (view->dual_page) {
 518                         if (view->current_page % 2 == 0) {
 519                                 view->start_page = view->current_page;
 520                                 if (view->current_page + 1 < ev_page_cache_get_n_pages (view->page_cache))
 521                                         view->end_page = view->start_page + 1;
 522                         } else {
 523                                 view->start_page = view->current_page - 1;
 524                                 view->end_page = view->current_page;
 525                         }
 526                 } else {
 527                         view->start_page = view->current_page;
 528                         view->end_page = view->current_page;
 529                 }
 530         }
 531
 532         ev_pixbuf_cache_set_page_range (view->pixbuf_cache,
 533                                         view->start_page,
 534                                         view->end_page,
 535                                         view->scale);
 536 }
 537
 538 static void
 539 view_scroll_to_page (EvView *view, gint new_page)
 540 {
 541         EvPageCache *page_cache = view->page_cache;
 542         int old_width, old_height;
 543         int new_width, new_height;
 544         int max_height, max_width, n_rows;
 545
 546         ev_page_cache_get_size (page_cache,
 547                                 view->current_page,
 548                                 view->scale,
 549                                 &old_width, &old_height);
 550
 551         ev_page_cache_get_size (page_cache,
 552                                 new_page,
 553                                 view->scale,
 554                                 &new_width, &new_height);
 555
 556         compute_border (view, new_width, new_height, &(view->border));
 557
 558         if (new_width != old_width || new_height != old_height)
 559                 gtk_widget_queue_resize (GTK_WIDGET (view));
 560         else
 561                 gtk_widget_queue_draw (GTK_WIDGET (view));
 562
 563         get_bounding_box_size (view, &max_width, &max_height);
 564
 565         if (view->continuous && view->vadjustment) {
 566
 567                 n_rows = view->dual_page ? new_page / 2 : new_page;
 568
 569                 gtk_adjustment_clamp_page(view->vadjustment,
 570                                           (max_height + view->spacing) * n_rows,
 571                                           (max_height + view->spacing) * n_rows +
 572                                            view->vadjustment->page_size);
 573         } else {
 574                 gtk_adjustment_set_value (view->vadjustment,
 575                                           view->vadjustment->lower);
 576         }
 577
 578         if (view->dual_page && view->hadjustment) {
 579                 if (new_page % 2 == 0) {
 580                         gtk_adjustment_set_value (view->hadjustment,
 581                                                   view->hadjustment->lower);
 582                 } else {
 583                         gtk_adjustment_clamp_page (view->hadjustment,
 584                                                    view->hadjustment->lower +
 585                                                    max_width + view->spacing,
 586                                                    view->hadjustment->lower +
 587                                                    max_width + view->spacing +
 588                                                    view->hadjustment->page_size);
 589                 }
 590         }
 591
 592         view->current_page = new_page;
 593         view_update_range_and_current_page (view);
 594 }
 595
 596 static void
 597 set_scroll_adjustment (EvView *view,
 598                        GtkOrientation  orientation,
 599                        GtkAdjustment  *adjustment)
 600 {
 601         GtkAdjustment **to_set;
 602
 603         if (orientation == GTK_ORIENTATION_HORIZONTAL)
 604                 to_set = &view->hadjustment;
 605         else
 606                 to_set = &view->vadjustment;
 607
 608         if (*to_set != adjustment) {
 609                 if (*to_set) {
 610                         g_signal_handlers_disconnect_by_func (*to_set,
 611                                                               (gpointer) on_adjustment_value_changed,
 612                                                               view);
 613                         g_object_unref (*to_set);
 614                 }
 615
 616                 *to_set = adjustment;
 617                 view_set_adjustment_values (view, orientation);
 618
 619                 if (*to_set) {
 620                         g_object_ref (*to_set);
 621                         g_signal_connect (*to_set, "value_changed",
 622                                           G_CALLBACK (on_adjustment_value_changed), view);
 623                 }
 624         }
 625 }
 626
 627 static void
 628 ev_view_set_scroll_adjustments (EvView *view,
 629                                 GtkAdjustment  *hadjustment,
 630                                 GtkAdjustment  *vadjustment)
 631 {
 632         set_scroll_adjustment (view, GTK_ORIENTATION_HORIZONTAL, hadjustment);
 633         set_scroll_adjustment (view, GTK_ORIENTATION_VERTICAL, vadjustment);
 634
 635         view_update_adjustments (view);
 636 }
 637
 638 static void
 639 add_scroll_binding_keypad (GtkBindingSet  *binding_set,
 640                            guint           keyval,
 641                            GtkScrollType   scroll,
 642                            gboolean        horizontal)
 643 {
 644   guint keypad_keyval = keyval - GDK_Left + GDK_KP_Left;
 645
 646   gtk_binding_entry_add_signal (binding_set, keyval, 0,
 647                                 "scroll_view", 2,
 648                                 GTK_TYPE_SCROLL_TYPE, scroll,
 649                                 G_TYPE_BOOLEAN, horizontal);
 650   gtk_binding_entry_add_signal (binding_set, keypad_keyval, 0,
 651                                 "scroll_view", 2,
 652                                 GTK_TYPE_SCROLL_TYPE, scroll,
 653                                 G_TYPE_BOOLEAN, horizontal);
 654 }
 655
 656 void
 657 ev_view_scroll (EvView        *view,
 658                 EvScrollType   scroll)
 659 {
 660         GtkAdjustment *adjustment;
 661         double value, increment;
 662         gboolean first_page = FALSE;
 663         gboolean last_page = FALSE;
 664
 665         /* Assign values for increment and vertical adjustment */
 666         adjustment = view->vadjustment;
 667         increment = adjustment->page_size * 0.75;
 668         value = adjustment->value;
 669
 670         /* Assign boolean for first and last page */
 671         if (view->current_page == 0)
 672                 first_page = TRUE;
 673         if (view->current_page == ev_page_cache_get_n_pages (view->page_cache) - 1)
 674                 last_page = TRUE;
 675
 676         switch (scroll) {
 677                 case EV_SCROLL_PAGE_BACKWARD:
 678                         /* Do not jump backwards if at the first page */
 679                         if (value == (adjustment->lower) && first_page) {
 680                                 /* Do nothing */
 681                                 /* At the top of a page, assign the upper bound limit of previous page */
 682                         } else if (value == (adjustment->lower)) {
 683                                 value = adjustment->upper - adjustment->page_size;
 684                                 ev_page_cache_set_current_page (view->page_cache, view->current_page - 1);
 685                                 /* Jump to the top */
 686                         } else {
 687                                 value = MAX (value - increment, adjustment->lower);
 688                         }
 689                         break;
 690                 case EV_SCROLL_PAGE_FORWARD:
 691                         /* Do not jump forward if at the last page */
 692                         if (value == (adjustment->upper - adjustment->page_size) && last_page) {
 693                                 /* Do nothing */
 694                         /* At the bottom of a page, assign the lower bound limit of next page */
 695                         } else if (value == (adjustment->upper - adjustment->page_size)) {
 696                                 value = 0;
 697                                 ev_page_cache_set_current_page (view->page_cache, view->current_page + 1);
 698                         /* Jump to the bottom */
 699                         } else {
 700                                 value = MIN (value + increment, adjustment->upper - adjustment->page_size);
 701                         }
 702                         break;
 703                 default:
 704                         break;
 705         }
 706
 707         gtk_adjustment_set_value (adjustment, value);
 708 }
 709
 710 static void
 711 ev_view_scroll_view (EvView *view,
 712                      GtkScrollType scroll,
 713                      gboolean horizontal)
 714 {
 715         GtkAdjustment *adjustment;
 716         double value;
 717
 718         if (horizontal) {
 719                 adjustment = view->hadjustment;
 720         } else {
 721                 adjustment = view->vadjustment;
 722         }
 723
 724         value = adjustment->value;
 725
 726         switch (scroll) {
 727                 case GTK_SCROLL_STEP_BACKWARD:
 728                         value -= adjustment->step_increment;
 729                         break;
 730                 case GTK_SCROLL_STEP_FORWARD:
 731                         value += adjustment->step_increment;
 732                         break;
 733                 default:
 734                         break;
 735         }
 736
 737         value = CLAMP (value, adjustment->lower,
 738                        adjustment->upper - adjustment->page_size);
 739
 740         gtk_adjustment_set_value (adjustment, value);
 741 }
 742
 743 #define MARGIN 5
 744
 745 static void
 746 ensure_rectangle_is_visible (EvView *view, GdkRectangle *rect)
 747 {
 748         GtkWidget *widget = GTK_WIDGET (view);
 749         GtkAdjustment *adjustment;
 750         int value;
 751
 752         adjustment = view->vadjustment;
 753
 754         if (rect->y < adjustment->value) {
 755                 value = MAX (adjustment->lower, rect->y - MARGIN);
 756                 gtk_adjustment_set_value (view->vadjustment, value);
 757         } else if (rect->y + rect->height >
 758                    adjustment->value + widget->allocation.height) {
 759                 value = MIN (adjustment->upper, rect->y + rect->height -
 760                              widget->allocation.height + MARGIN);
 761                 gtk_adjustment_set_value (view->vadjustment, value);
 762         }
 763
 764         adjustment = view->hadjustment;
 765
 766         if (rect->x < adjustment->value) {
 767                 value = MAX (adjustment->lower, rect->x - MARGIN);
 768                 gtk_adjustment_set_value (view->hadjustment, value);
 769         } else if (rect->x + rect->height >
 770                    adjustment->value + widget->allocation.width) {
 771                 value = MIN (adjustment->upper, rect->x + rect->width -
 772                              widget->allocation.width + MARGIN);
 773                 gtk_adjustment_set_value (view->hadjustment, value);
 774         }
 775 }
 776
 777 /*** Geometry computations ***/
 778
 779 static void
 780 compute_border (EvView *view, int width, int height, GtkBorder *border)
 781 {
 782         if (view->presentation) {
 783                 border->left = 0;
 784                 border->right = 0;
 785                 border->top = 0;
 786                 border->bottom = 0;
 787         } else {
 788                 ev_document_misc_get_page_border_size (width, height, border);
 789         }
 790 }
 791
 792 static gboolean
 793 get_page_extents (EvView       *view,
 794                   gint          page,
 795                   GdkRectangle *page_area,
 796                   GtkBorder    *border)
 797 {
 798         GtkWidget *widget;
 799         int width, height;
 800
 801         widget = GTK_WIDGET (view);
 802
 803         /* Quick sanity check */
 804         if (view->presentation) {
 805                 if (view->current_page != page)
 806                         return FALSE;
 807         } else if (view->continuous) {
 808                 if (page < view->start_page ||
 809                     page > view->end_page)
 810                         return FALSE;
 811         } else if (view->dual_page) {
 812                 if (ABS (page - view->current_page) > 1)
 813                         return FALSE;
 814         } else {
 815                 if (view->current_page != page)
 816                         return FALSE;
 817         }
 818
 819         /* Get the size of the page */
 820         ev_page_cache_get_size (view->page_cache, page,
 821                                 view->scale,
 822                                 &width, &height);
 823         compute_border (view, width, height, border);
 824         page_area->width = width + border->left + border->right;
 825         page_area->height = height + border->top + border->bottom;
 826
 827         if (view->presentation) {
 828                 page_area->x = (MAX (0, widget->allocation.width - width))/2;
 829                 page_area->y = (MAX (0, widget->allocation.height - height))/2;
 830         } else if (view->continuous) {
 831                 gint max_width, max_height;
 832                 gint x, y;
 833
 834                 get_bounding_box_size (view, &max_width, &max_height);
 835                 /* Get the location of the bounding box */
 836                 if (view->dual_page) {
 837                         x = view->spacing + (page % 2) * (max_width + view->spacing);
 838                         y = view->spacing + (page / 2) * (max_height + view->spacing);
 839                         x = x + MAX (0, widget->allocation.width - (max_width * 2 + view->spacing * 3))/2;
 840                 } else {
 841                         x = view->spacing;
 842                         y = view->spacing + page * (max_height + view->spacing);
 843                         x = x + MAX (0, widget->allocation.width - (max_width + view->spacing * 2))/2;
 844                 }
 845                 page_area->x = x;
 846                 page_area->y = y;
 847         } else {
 848                 gint x, y;
 849                 if (view->dual_page) {
 850                         gint width_2, height_2;
 851                         gint max_width = width;
 852                         gint max_height = height;
 853                         GtkBorder overall_border;
 854                         gint other_page;
 855
 856                         other_page = page ^ 1;
 857
 858                         /* First, we get the bounding box of the two pages */
 859                         if (other_page < ev_page_cache_get_n_pages (view->page_cache)) {
 860                                 ev_page_cache_get_size (view->page_cache,
 861                                                         page + 1,
 862                                                         view->scale,
 863                                                         &width_2, &height_2);
 864                                 if (width_2 > width)
 865                                         max_width = width_2;
 866                                 if (height_2 > height)
 867                                         max_height = height_2;
 868                         }
 869                         compute_border (view, max_width, max_height, &overall_border);
 870
 871                         /* Find the offsets */
 872                         x = view->spacing;
 873                         y = view->spacing;
 874
 875                         /* Adjust for being the left or right page */
 876                         if (page % 2 == 0)
 877                                 x = x + max_width - width;
 878                         else
 879                                 x = x + (max_width + overall_border.left + overall_border.right) + view->spacing;
 880
 881                         y = y + (max_height - height)/2;
 882
 883                         /* Adjust for extra allocation */
 884                         x = x + MAX (0, widget->allocation.width -
 885                                      ((max_width + overall_border.left + overall_border.right) * 2 + view->spacing * 3))/2;
 886                         y = y + MAX (0, widget->allocation.height - (height + view->spacing * 2))/2;
 887                 } else {
 888                         x = view->spacing;
 889                         y = view->spacing;
 890
 891                         /* Adjust for extra allocation */
 892                         x = x + MAX (0, widget->allocation.width - (width + view->spacing * 2))/2;
 893                         y = y + MAX (0, widget->allocation.height - (height + view->spacing * 2))/2;
 894                 }
 895
 896                 page_area->x = x;
 897                 page_area->y = y;
 898         }
 899
 900         return TRUE;
 901 }
 902
 903 static void
 904 view_rect_to_doc_rect (EvView *view,
 905                        GdkRectangle *view_rect,
 906                        GdkRectangle *page_area,
 907                        EvRectangle  *doc_rect)
 908 {
 909         doc_rect->x1 = floor ((view_rect->x - page_area->x) / view->scale);
 910         doc_rect->y1 = floor ((view_rect->y - page_area->y) / view->scale);
 911         doc_rect->x2 = doc_rect->x1 + ceil (view_rect->width / view->scale);
 912         doc_rect->y2 = doc_rect->y1 + ceil (view_rect->height / view->scale);
 913 }
 914
 915 static void
 916 doc_rect_to_view_rect (EvView       *view,
 917                        int           page,
 918                        EvRectangle  *doc_rect,
 919                        GdkRectangle *view_rect)
 920 {
 921         GdkRectangle page_area;
 922         GtkBorder border;
 923         int width, height;
 924
 925         get_page_extents (view, page, &page_area, &border);
 926
 927         width = doc_rect->x2 - doc_rect->x1;
 928         height = doc_rect->y2 - doc_rect->y1;
 929         view_rect->x = floor (doc_rect->x1 * view->scale) + page_area.x;
 930         view_rect->y = floor (doc_rect->y1 * view->scale) + page_area.y;
 931         view_rect->width = ceil (width * view->scale);
 932         view_rect->height = ceil (height * view->scale);
 933 }
 934
 935 static void
 936 get_bounding_box_size (EvView *view, int *max_width, int *max_height)
 937 {
 938         GtkBorder border;
 939         int width, height;
 940
 941         if (max_width) {
 942                 ev_page_cache_get_max_width_size (view->page_cache,
 943                                                   view->scale,
 944                                                   &width, &height);
 945                 compute_border (view, width, height, &border);
 946                 *max_width = width + border.left + border.right;
 947         }
 948
 949
 950         if (max_height) {
 951                 ev_page_cache_get_max_height_size (view->page_cache,
 952                                                    view->scale,
 953                                                    &width, &height);
 954                 compute_border (view, width, height, &border);
 955                 *max_height = height + border.top + border.bottom;
 956         }
 957 }
 958
 959 static void
 960 find_page_at_location (EvView  *view,
 961                        gdouble  x,
 962                        gdouble  y,
 963                        gint    *page,
 964                        gint    *x_offset,
 965                        gint    *y_offset)
 966 {
 967         int i;
 968
 969         if (view->document == NULL)
 970                 return;
 971
 972         g_assert (page);
 973         g_assert (x_offset);
 974         g_assert (y_offset);
 975
 976         for (i = view->start_page; i <= view->end_page; i++) {
 977                 GdkRectangle page_area;
 978                 GtkBorder border;
 979
 980                 if (! get_page_extents (view, i, &page_area, &border))
 981                         continue;
 982
 983                 if ((x >= page_area.x + border.left) &&
 984                     (x < page_area.x + page_area.width - border.right) &&
 985                     (y >= page_area.y + border.top) &&
 986                     (y < page_area.y + page_area.height - border.bottom)) {
 987                         *page = i;
 988                         *x_offset = x - (page_area.x + border.left);
 989                         *y_offset = y - (page_area.y + border.top);
 990                         return;
 991                 }
 992         }
 993
 994         *page = -1;
 995 }
 996
 997 /*** Hyperref ***/
 998 static EvLink *
 999 get_link_at_location (EvView  *view,
1000                       gdouble  x,
1001                       gdouble  y)
1002 {
1003         gint page = -1;
1004         gint x_offset = 0, y_offset = 0;
1005         GList *link_mapping;
1006
1007         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1008
1009         if (page == -1)
1010                 return NULL;
1011
1012         link_mapping = ev_pixbuf_cache_get_link_mapping (view->pixbuf_cache, page);
1013
1014         if (link_mapping)
1015                 return ev_link_mapping_find (link_mapping, x_offset / view->scale, y_offset / view->scale);
1016         else
1017                 return NULL;
1018 }
1019
1020 /* FIXME: standardize this sometime */
1021 static void
1022 go_to_link (EvView *view, EvLink *link)
1023 {
1024         EvLinkType type;
1025         const char *uri;
1026         int page;
1027
1028         type = ev_link_get_link_type (link);
1029
1030         switch (type) {
1031                 case EV_LINK_TYPE_TITLE:
1032                         break;
1033                 case EV_LINK_TYPE_PAGE:
1034                         page = ev_link_get_page (link);
1035                         ev_page_cache_set_current_page (view->page_cache, page);
1036                         break;
1037                 case EV_LINK_TYPE_EXTERNAL_URI:
1038                         uri = ev_link_get_uri (link);
1039                         gnome_vfs_url_show (uri);
1040                         break;
1041         }
1042 }
1043
1044 static char *
1045 status_message_from_link (EvView *view, EvLink *link)
1046 {
1047         EvLinkType type;
1048         char *msg = NULL;
1049         char *page_label;
1050
1051         type = ev_link_get_link_type (link);
1052
1053         switch (type) {
1054                 case EV_LINK_TYPE_TITLE:
1055                         if (ev_link_get_title (link))
1056                                 msg = g_strdup (ev_link_get_title (link));
1057                         break;
1058                 case EV_LINK_TYPE_PAGE:
1059                         page_label = ev_page_cache_get_page_label (view->page_cache, ev_link_get_page (link));
1060                         msg = g_strdup_printf (_("Go to page %s"), page_label);
1061                         g_free (page_label);
1062                         break;
1063                 case EV_LINK_TYPE_EXTERNAL_URI:
1064                         msg = g_strdup (ev_link_get_uri (link));
1065                         break;
1066                 default:
1067                         break;
1068         }
1069
1070         return msg;
1071 }
1072
1073
1074 /*** GtkWidget implementation ***/
1075
1076 static void
1077 ev_view_size_request_continuous_dual_page (EvView         *view,
1078                                                GtkRequisition *requisition)
1079 {
1080         int max_width, max_height;
1081         int n_rows;
1082
1083         get_bounding_box_size (view, &max_width, &max_height);
1084
1085         n_rows = (1 + ev_page_cache_get_n_pages (view->page_cache)) / 2;
1086
1087         requisition->width = (max_width * 2) + (view->spacing * 3);
1088         requisition->height = max_height * n_rows + (view->spacing * (n_rows + 1));
1089
1090         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
1091                 requisition->width = 1;
1092         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
1093                 requisition->width = 1;
1094                 /* FIXME: This could actually be set on one page docs or docs
1095                  * with a strange aspect ratio. */
1096                 /* requisition->height = 1;*/
1097         }
1098 }
1099
1100 static void
1101 ev_view_size_request_continuous (EvView         *view,
1102                                  GtkRequisition *requisition)
1103 {
1104         int max_width, max_height;
1105         int n_pages;
1106
1107         get_bounding_box_size (view, &max_width, &max_height);
1108
1109         n_pages = ev_page_cache_get_n_pages (view->page_cache);
1110
1111         requisition->width = max_width + (view->spacing * 2);
1112         requisition->height = max_height * n_pages + (view->spacing * (n_pages + 1));
1113
1114         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
1115                 requisition->width = 1;
1116         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
1117                 requisition->width = 1;
1118                 /* FIXME: This could actually be set on one page docs or docs
1119                  * with a strange aspect ratio. */
1120                 /* requisition->height = 1;*/
1121         }
1122 }
1123
1124 static void
1125 ev_view_size_request_dual_page (EvView         *view,
1126                                 GtkRequisition *requisition)
1127 {
1128         GtkBorder border;
1129         gint width, height;
1130
1131         /* Find the largest of the two. */
1132         ev_page_cache_get_size (view->page_cache,
1133                                 view->current_page,
1134                                 view->scale,
1135                                 &width, &height);
1136         if (view->current_page + 1 < ev_page_cache_get_n_pages (view->page_cache)) {
1137                 gint width_2, height_2;
1138                 ev_page_cache_get_size (view->page_cache,
1139                                         view->current_page + 1,
1140                                         view->scale,
1141                                         &width_2, &height_2);
1142                 if (width_2 > width) {
1143                         width = width_2;
1144                         height = height_2;
1145                 }
1146         }
1147         compute_border (view, width, height, &border);
1148
1149         requisition->width = ((width + border.left + border.right) * 2) +
1150                 (view->spacing * 3);
1151         requisition->height = (height + border.top + border.bottom) +
1152                 (view->spacing * 2);
1153
1154         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
1155                 requisition->width = 1;
1156         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
1157                 requisition->width = 1;
1158                 requisition->height = 1;
1159         }
1160 }
1161
1162 static void
1163 ev_view_size_request_single_page (EvView         *view,
1164                                   GtkRequisition *requisition)
1165 {
1166         GtkBorder border;
1167         gint width, height;
1168
1169         ev_page_cache_get_size (view->page_cache,
1170                                 view->current_page,
1171                                 view->scale,
1172                                 &width, &height);
1173         compute_border (view, width, height, &border);
1174
1175         requisition->width = width + border.left + border.right + (2 * view->spacing);
1176         requisition->height = height + border.top + border.bottom + (2 * view->spacing);
1177
1178         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
1179                 requisition->width = 1;
1180                 requisition->height = height + border.top + border.bottom + (2 * view->spacing);
1181         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
1182                 requisition->width = 1;
1183                 requisition->height = 1;
1184         }
1185 }
1186
1187 static void
1188 ev_view_size_request (GtkWidget      *widget,
1189                       GtkRequisition *requisition)
1190 {
1191         EvView *view = EV_VIEW (widget);
1192
1193         if (view->document == NULL) {
1194                 requisition->width = 1;
1195                 requisition->height = 1;
1196                 return;
1197         }
1198
1199         if (view->presentation) {
1200                 requisition->width = 1;
1201                 requisition->height = 1;
1202                 return;
1203         }
1204
1205         if (view->continuous && view->dual_page)
1206                 ev_view_size_request_continuous_dual_page (view, requisition);
1207         else if (view->continuous)
1208                 ev_view_size_request_continuous (view, requisition);
1209         else if (view->dual_page)
1210                 ev_view_size_request_dual_page (view, requisition);
1211         else
1212                 ev_view_size_request_single_page (view, requisition);
1213 }
1214
1215 static void
1216 ev_view_size_allocate (GtkWidget      *widget,
1217                        GtkAllocation  *allocation)
1218 {
1219         EvView *view = EV_VIEW (widget);
1220
1221         if (view->sizing_mode == EV_SIZING_FIT_WIDTH ||
1222                   view->sizing_mode == EV_SIZING_BEST_FIT) {
1223
1224                 g_signal_emit (view, signals[SIGNAL_ZOOM_INVALID], 0);
1225
1226                 ev_view_size_request (widget, &widget->requisition);
1227         }
1228
1229         view_set_adjustment_values (view, GTK_ORIENTATION_HORIZONTAL);
1230         view_set_adjustment_values (view, GTK_ORIENTATION_VERTICAL);
1231
1232         view->pending_scroll = SCROLL_TO_KEEP_POSITION;
1233         view->pending_resize = FALSE;
1234
1235         if (view->document)
1236                 view_update_range_and_current_page (view);
1237
1238         GTK_WIDGET_CLASS (ev_view_parent_class)->size_allocate (widget, allocation);
1239 }
1240
1241 static void
1242 ev_view_realize (GtkWidget *widget)
1243 {
1244         EvView *view = EV_VIEW (widget);
1245         GdkWindowAttr attributes;
1246
1247         GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
1248
1249
1250         attributes.window_type = GDK_WINDOW_CHILD;
1251         attributes.wclass = GDK_INPUT_OUTPUT;
1252         attributes.visual = gtk_widget_get_visual (widget);
1253         attributes.colormap = gtk_widget_get_colormap (widget);
1254
1255         attributes.x = widget->allocation.x;
1256         attributes.y = widget->allocation.y;
1257         attributes.width = widget->allocation.width;
1258         attributes.height = widget->allocation.height;
1259         attributes.event_mask = GDK_EXPOSURE_MASK |
1260                                 GDK_BUTTON_PRESS_MASK |
1261                                 GDK_BUTTON_RELEASE_MASK |
1262                                 GDK_SCROLL_MASK |
1263                                 GDK_KEY_PRESS_MASK |
1264                                 GDK_POINTER_MOTION_MASK |
1265                                 GDK_LEAVE_NOTIFY_MASK;
1266
1267         widget->window = gdk_window_new (gtk_widget_get_parent_window (widget),
1268                                          &attributes,
1269                                          GDK_WA_X | GDK_WA_Y |
1270                                          GDK_WA_COLORMAP |
1271                                          GDK_WA_VISUAL);
1272         gdk_window_set_user_data (widget->window, widget);
1273         widget->style = gtk_style_attach (widget->style, widget->window);
1274
1275         if (view->presentation)
1276                 gdk_window_set_background (widget->window, &widget->style->black);
1277         else
1278                 gdk_window_set_background (widget->window, &widget->style->mid [GTK_STATE_NORMAL]);
1279 }
1280
1281 static void
1282 ev_view_unrealize (GtkWidget *widget)
1283 {
1284         GTK_WIDGET_CLASS (ev_view_parent_class)->unrealize (widget);
1285 }
1286
1287 static gboolean
1288 ev_view_scroll_event (GtkWidget *widget, GdkEventScroll *event)
1289 {
1290         EvView *view = EV_VIEW (widget);
1291
1292         if ((event->state & GDK_CONTROL_MASK) != 0) {
1293
1294                  ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1295
1296                  if ((event->direction == GDK_SCROLL_UP ||
1297                         event->direction == GDK_SCROLL_LEFT) &&
1298                         ev_view_can_zoom_in (view)) {
1299                                 ev_view_zoom_in (view);
1300                  } else if (ev_view_can_zoom_out (view)) {
1301                                 ev_view_zoom_out (view);
1302                  }
1303
1304                  return TRUE;
1305         }
1306
1307         if ((event->state & GDK_SHIFT_MASK) != 0) {
1308                 if (event->direction == GDK_SCROLL_UP)
1309                         event->direction = GDK_SCROLL_LEFT;
1310                 if (event->direction == GDK_SCROLL_DOWN)
1311                         event->direction = GDK_SCROLL_RIGHT;
1312         }
1313
1314         return FALSE;
1315 }
1316
1317 static gboolean
1318 ev_view_expose_event (GtkWidget      *widget,
1319                       GdkEventExpose *event)
1320 {
1321         EvView *view = EV_VIEW (widget);
1322         GdkRectangle rubberband;
1323         GList *l;
1324         int i;
1325
1326         if (view->document == NULL)
1327                 return FALSE;
1328
1329         for (i = view->start_page; i <= view->end_page; i++) {
1330                 GdkRectangle page_area;
1331                 GtkBorder border;
1332
1333                 if (!get_page_extents (view, i, &page_area, &border))
1334                         continue;
1335
1336                 page_area.x -= view->scroll_x;
1337                 page_area.y -= view->scroll_y;
1338
1339                 draw_one_page (view, i, &page_area, &border, &(event->area));
1340
1341                 if (EV_IS_DOCUMENT_FIND (view->document)) {
1342                         highlight_find_results (view, i);
1343                 }
1344         }
1345
1346         for (l = view->selections; l != NULL; l = l->next) {
1347                 EvViewSelection *selection = (EvViewSelection *)l->data;
1348
1349                 doc_rect_to_view_rect (view, selection->page,
1350                                        &selection->rect, &rubberband);
1351                 if (rubberband.width > 0 && rubberband.height > 0) {
1352                         draw_rubberband (GTK_WIDGET (view), GTK_WIDGET(view)->window,
1353                                          &rubberband, 0x40);
1354                 }
1355         }
1356
1357         return FALSE;
1358 }
1359
1360 static gboolean
1361 ev_view_button_press_event (GtkWidget      *widget,
1362                             GdkEventButton *event)
1363 {
1364         EvView *view = EV_VIEW (widget);
1365
1366         if (!GTK_WIDGET_HAS_FOCUS (widget)) {
1367                 gtk_widget_grab_focus (widget);
1368         }
1369
1370         view->pressed_button = event->button;
1371
1372         switch (event->button) {
1373                 case 1:
1374                         if (view->selections) {
1375                                 clear_selection (view);
1376                                 gtk_widget_queue_draw (widget);
1377                         }
1378
1379                         view->selection_start.x = event->x;
1380                         view->selection_start.y = event->y;
1381                         return TRUE;
1382                 case 2:
1383                         /* use root coordinates as reference point because
1384                          * scrolling changes window relative coordinates */
1385                         view->drag_info.start.x = event->x_root;
1386                         view->drag_info.start.y = event->y_root;
1387                         view->drag_info.hadj = gtk_adjustment_get_value (view->hadjustment);
1388                         view->drag_info.vadj = gtk_adjustment_get_value (view->vadjustment);
1389
1390                         ev_view_set_cursor (view, EV_VIEW_CURSOR_DRAG);
1391
1392                         return TRUE;
1393         }
1394
1395         return FALSE;
1396 }
1397
1398 static gboolean
1399 ev_view_motion_notify_event (GtkWidget      *widget,
1400                              GdkEventMotion *event)
1401 {
1402         EvView *view = EV_VIEW (widget);
1403
1404         if (view->pressed_button == 1) {
1405                 GdkRectangle selection;
1406
1407                 selection.x = MIN (view->selection_start.x, event->x) + view->scroll_x;
1408                 selection.y = MIN (view->selection_start.y, event->y) + view->scroll_y;
1409                 selection.width = ABS (view->selection_start.x - event->x) + 1;
1410                 selection.height = ABS (view->selection_start.y - event->y) + 1;
1411
1412                 compute_selections (view, &selection);
1413
1414                 gtk_widget_queue_draw (widget);
1415
1416                 return TRUE;
1417         } else if (view->pressed_button == 2) {
1418                 if (!view->drag_info.dragging) {
1419                         gboolean start;
1420
1421                         start = gtk_drag_check_threshold (widget,
1422                                                           view->drag_info.start.x,
1423                                                           view->drag_info.start.y,
1424                                                           event->x_root,
1425                                                           event->y_root);
1426                         view->drag_info.dragging = start;
1427                 }
1428
1429                 if (view->drag_info.dragging) {
1430                         int dx, dy;
1431                         gdouble dhadj_value, dvadj_value;
1432
1433                         dx = event->x_root - view->drag_info.start.x;
1434                         dy = event->y_root - view->drag_info.start.y;
1435
1436                         dhadj_value = view->hadjustment->page_size *
1437                                       (gdouble)dx / widget->allocation.width;
1438                         dvadj_value = view->vadjustment->page_size *
1439                                       (gdouble)dy / widget->allocation.height;
1440
1441                         /* clamp scrolling to visible area */
1442                         gtk_adjustment_set_value (view->hadjustment,
1443                                                   MIN(view->drag_info.hadj - dhadj_value,
1444                                                       view->hadjustment->upper -
1445                                                       view->hadjustment->page_size));
1446                         gtk_adjustment_set_value (view->vadjustment,
1447                                                   MIN(view->drag_info.vadj - dvadj_value,
1448                                                       view->vadjustment->upper -
1449                                                       view->vadjustment->page_size));
1450
1451                         return TRUE;
1452                 }
1453         } else if (view->pressed_button <= 0 && view->document) {
1454                 EvLink *link;
1455
1456                 link = get_link_at_location (view, event->x + view->scroll_x, event->y + view->scroll_y);
1457                 if (link) {
1458                         char *msg;
1459
1460                         msg = status_message_from_link (view, link);
1461                         ev_view_set_status (view, msg);
1462                         ev_view_set_cursor (view, EV_VIEW_CURSOR_LINK);
1463                         g_free (msg);
1464                 } else {
1465                         ev_view_set_status (view, NULL);
1466                         if (view->cursor == EV_VIEW_CURSOR_LINK) {
1467                                 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
1468                         }
1469                 }
1470                 return TRUE;
1471         }
1472
1473         return FALSE;
1474 }
1475
1476 static gboolean
1477 ev_view_button_release_event (GtkWidget      *widget,
1478                               GdkEventButton *event)
1479 {
1480         EvView *view = EV_VIEW (widget);
1481
1482         if (view->pressed_button == 2) {
1483                 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
1484         }
1485
1486         view->pressed_button = -1;
1487         view->drag_info.dragging = FALSE;
1488
1489         if (view->selections) {
1490                 ev_view_update_primary_selection (view);
1491         } else if (view->document) {
1492                 EvLink *link;
1493
1494                 link = get_link_at_location (view, event->x + view->scroll_x, event->y + view->scroll_y);
1495                 if (link) {
1496                         go_to_link (view, link);
1497                 }
1498         }
1499
1500         return FALSE;
1501 }
1502
1503 /*** Drawing ***/
1504
1505 static guint32
1506 ev_gdk_color_to_rgb (const GdkColor *color)
1507 {
1508   guint32 result;
1509   result = (0xff0000 | (color->red & 0xff00));
1510   result <<= 8;
1511   result |= ((color->green & 0xff00) | (color->blue >> 8));
1512   return result;
1513 }
1514
1515 static void
1516 draw_rubberband (GtkWidget *widget, GdkWindow *window,
1517                  const GdkRectangle *rect, guchar alpha)
1518 {
1519         GdkGC *gc;
1520         GdkPixbuf *pixbuf;
1521         GdkColor *fill_color_gdk;
1522         guint fill_color;
1523
1524         fill_color_gdk = gdk_color_copy (&GTK_WIDGET (widget)->style->base[GTK_STATE_SELECTED]);
1525         fill_color = ev_gdk_color_to_rgb (fill_color_gdk) << 8 | alpha;
1526
1527         pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE, 8,
1528                                  rect->width, rect->height);
1529         gdk_pixbuf_fill (pixbuf, fill_color);
1530
1531         gdk_draw_pixbuf (window, NULL, pixbuf,
1532                          0, 0,
1533                          rect->x - EV_VIEW (widget)->scroll_x, rect->y - EV_VIEW (widget)->scroll_y,
1534                          rect->width, rect->height,
1535                          GDK_RGB_DITHER_NONE,
1536                          0, 0);
1537
1538         g_object_unref (pixbuf);
1539
1540         gc = gdk_gc_new (window);
1541         gdk_gc_set_rgb_fg_color (gc, fill_color_gdk);
1542         gdk_draw_rectangle (window, gc, FALSE,
1543                             rect->x - EV_VIEW (widget)->scroll_x, rect->y - EV_VIEW (widget)->scroll_y,
1544                             rect->width - 1,
1545                             rect->height - 1);
1546         g_object_unref (gc);
1547
1548         gdk_color_free (fill_color_gdk);
1549 }
1550
1551
1552 static void
1553 highlight_find_results (EvView *view, int page)
1554 {
1555         EvDocumentFind *find;
1556         int i, results = 0;
1557
1558         g_return_if_fail (EV_IS_DOCUMENT_FIND (view->document));
1559
1560         find = EV_DOCUMENT_FIND (view->document);
1561
1562         results = ev_document_find_get_n_results (find, page);
1563
1564         for (i = 0; i < results; i++) {
1565                 EvRectangle rectangle;
1566                 GdkRectangle view_rectangle;
1567                 guchar alpha;
1568
1569                 if (i == view->find_result && page == view->find_page) {
1570                         alpha = 0x90;
1571                 } else {
1572                         alpha = 0x20;
1573                 }
1574
1575                 ev_document_find_get_result (find, page,
1576                                              i, &rectangle);
1577                 doc_rect_to_view_rect (view, page, &rectangle, &view_rectangle);
1578                 draw_rubberband (GTK_WIDGET (view), GTK_WIDGET(view)->window,
1579                                  &view_rectangle, alpha);
1580         }
1581 }
1582
1583 static void
1584 draw_one_page (EvView       *view,
1585                gint          page,
1586                GdkRectangle *page_area,
1587                GtkBorder    *border,
1588                GdkRectangle *expose_area)
1589 {
1590         gint width, height;
1591         GdkPixbuf *scaled_image;
1592         GdkPixbuf *current_pixbuf;
1593         GdkRectangle overlap;
1594         GdkRectangle real_page_area;
1595
1596         g_assert (view->document);
1597
1598         if (!gdk_rectangle_intersect (page_area, expose_area, &overlap))
1599                 return;
1600
1601         ev_page_cache_get_size (view->page_cache,
1602                                 page, view->scale,
1603                                 &width, &height);
1604
1605         /* Render the document itself */
1606         real_page_area = *page_area;
1607
1608         real_page_area.x += border->left;
1609         real_page_area.y += border->top;
1610         real_page_area.width -= (border->left + border->right);
1611         real_page_area.height -= (border->top + border->bottom);
1612
1613         if (! gdk_rectangle_intersect (&real_page_area, expose_area, &overlap))
1614                 return;
1615
1616         ev_document_misc_paint_one_page (GTK_WIDGET(view)->window,
1617                                          GTK_WIDGET (view),
1618                                          page_area, border);
1619
1620         current_pixbuf = ev_pixbuf_cache_get_pixbuf (view->pixbuf_cache, page);
1621
1622         if (current_pixbuf == NULL)
1623                 scaled_image = NULL;
1624         else if (width == gdk_pixbuf_get_width (current_pixbuf) &&
1625                  height == gdk_pixbuf_get_height (current_pixbuf))
1626                 scaled_image = g_object_ref (current_pixbuf);
1627         else
1628                 scaled_image = gdk_pixbuf_scale_simple (current_pixbuf,
1629                                                         width, height,
1630                                                         GDK_INTERP_NEAREST);
1631
1632         if (scaled_image) {
1633                 gdk_draw_pixbuf (GTK_WIDGET(view)->window,
1634                                  GTK_WIDGET (view)->style->fg_gc[GTK_STATE_NORMAL],
1635                                  scaled_image,
1636                                  overlap.x - real_page_area.x,
1637                                  overlap.y - real_page_area.y,
1638                                  overlap.x, overlap.y,
1639                                  overlap.width, overlap.height,
1640                                  GDK_RGB_DITHER_NORMAL,
1641                                  0, 0);
1642                 g_object_unref (scaled_image);
1643         }
1644 }
1645
1646 /*** GObject functions ***/
1647
1648 static void
1649 ev_view_finalize (GObject *object)
1650 {
1651         EvView *view = EV_VIEW (object);
1652
1653         LOG ("Finalize");
1654
1655         g_free (view->status);
1656         g_free (view->find_status);
1657
1658         clear_selection (view);
1659
1660         G_OBJECT_CLASS (ev_view_parent_class)->finalize (object);
1661 }
1662
1663 static void
1664 ev_view_destroy (GtkObject *object)
1665 {
1666         EvView *view = EV_VIEW (object);
1667
1668         if (view->document) {
1669                 g_object_unref (view->document);
1670                 view->document = NULL;
1671         }
1672         if (view->pixbuf_cache) {
1673                 g_object_unref (view->pixbuf_cache);
1674                 view->pixbuf_cache = NULL;
1675         }
1676         ev_view_set_scroll_adjustments (view, NULL, NULL);
1677
1678         GTK_OBJECT_CLASS (ev_view_parent_class)->destroy (object);
1679 }
1680
1681 static void
1682 ev_view_set_property (GObject      *object,
1683                       guint         prop_id,
1684                       const GValue *value,
1685                       GParamSpec   *pspec)
1686 {
1687         EvView *view = EV_VIEW (object);
1688
1689         switch (prop_id)
1690         {
1691         case PROP_CONTINUOUS:
1692                 ev_view_set_continuous (view, g_value_get_boolean (value));
1693                 break;
1694         case PROP_DUAL_PAGE:
1695                 ev_view_set_dual_page (view, g_value_get_boolean (value));
1696                 break;
1697         case PROP_FULLSCREEN:
1698                 ev_view_set_fullscreen (view, g_value_get_boolean (value));
1699                 break;
1700         case PROP_PRESENTATION:
1701                 ev_view_set_presentation (view, g_value_get_boolean (value));
1702                 break;
1703         case PROP_SIZING_MODE:
1704                 ev_view_set_sizing_mode (view, g_value_get_enum (value));
1705                 break;
1706         default:
1707                 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1708         }
1709 }
1710
1711 static void
1712 ev_view_get_property (GObject *object,
1713                       guint prop_id,
1714                       GValue *value,
1715                       GParamSpec *pspec)
1716 {
1717         EvView *view = EV_VIEW (object);
1718
1719         switch (prop_id)
1720         {
1721         case PROP_STATUS:
1722                 g_value_set_string (value, view->status);
1723                 break;
1724         case PROP_FIND_STATUS:
1725                 g_value_set_string (value, view->status);
1726                 break;
1727         case PROP_CONTINUOUS:
1728                 g_value_set_boolean (value, view->continuous);
1729                 break;
1730         case PROP_DUAL_PAGE:
1731                 g_value_set_boolean (value, view->dual_page);
1732                 break;
1733         case PROP_FULLSCREEN:
1734                 g_value_set_boolean (value, view->fullscreen);
1735                 break;
1736         case PROP_PRESENTATION:
1737                 g_value_set_boolean (value, view->presentation);
1738                 break;
1739         case PROP_SIZING_MODE:
1740                 g_value_set_enum (value, view->sizing_mode);
1741                 break;
1742         default:
1743                 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1744         }
1745 }
1746
1747 static void
1748 ev_view_class_init (EvViewClass *class)
1749 {
1750         GObjectClass *object_class = G_OBJECT_CLASS (class);
1751         GtkObjectClass *gtk_object_class = GTK_OBJECT_CLASS (class);
1752         GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
1753         GtkBindingSet *binding_set;
1754
1755         object_class->finalize = ev_view_finalize;
1756         object_class->set_property = ev_view_set_property;
1757         object_class->get_property = ev_view_get_property;
1758
1759         widget_class->expose_event = ev_view_expose_event;
1760         widget_class->button_press_event = ev_view_button_press_event;
1761         widget_class->motion_notify_event = ev_view_motion_notify_event;
1762         widget_class->button_release_event = ev_view_button_release_event;
1763         widget_class->size_request = ev_view_size_request;
1764         widget_class->size_allocate = ev_view_size_allocate;
1765         widget_class->realize = ev_view_realize;
1766         widget_class->unrealize = ev_view_unrealize;
1767         widget_class->scroll_event = ev_view_scroll_event;
1768         gtk_object_class->destroy = ev_view_destroy;
1769
1770         class->set_scroll_adjustments = ev_view_set_scroll_adjustments;
1771         class->scroll_view = ev_view_scroll_view;
1772
1773         widget_class->set_scroll_adjustments_signal =
1774             g_signal_new ("set-scroll-adjustments",
1775                           G_OBJECT_CLASS_TYPE (object_class),
1776                           G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1777                           G_STRUCT_OFFSET (EvViewClass, set_scroll_adjustments),
1778                           NULL, NULL,
1779                           ev_marshal_VOID__OBJECT_OBJECT,
1780                           G_TYPE_NONE, 2,
1781                           GTK_TYPE_ADJUSTMENT,
1782                           GTK_TYPE_ADJUSTMENT);
1783
1784         signals[SIGNAL_SCROLL_VIEW] = g_signal_new ("scroll-view",
1785                          G_TYPE_FROM_CLASS (object_class),
1786                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1787                          G_STRUCT_OFFSET (EvViewClass, scroll_view),
1788                          NULL, NULL,
1789                          ev_marshal_VOID__ENUM_BOOLEAN,
1790                          G_TYPE_NONE, 2,
1791                          GTK_TYPE_SCROLL_TYPE,
1792                          G_TYPE_BOOLEAN);
1793
1794         signals[SIGNAL_ZOOM_INVALID] = g_signal_new ("zoom-invalid",
1795                          G_TYPE_FROM_CLASS (object_class),
1796                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1797                          G_STRUCT_OFFSET (EvViewClass, zoom_invalid),
1798                          NULL, NULL,
1799                          ev_marshal_VOID__VOID,
1800                          G_TYPE_NONE, 0, G_TYPE_NONE);
1801
1802         g_object_class_install_property (object_class,
1803                                          PROP_STATUS,
1804                                          g_param_spec_string ("status",
1805                                                               "Status Message",
1806                                                               "The status message",
1807                                                               NULL,
1808                                                               G_PARAM_READABLE));
1809
1810         g_object_class_install_property (object_class,
1811                                          PROP_FIND_STATUS,
1812                                          g_param_spec_string ("find-status",
1813                                                               "Find Status Message",
1814                                                               "The find status message",
1815                                                               NULL,
1816                                                               G_PARAM_READABLE));
1817
1818         g_object_class_install_property (object_class,
1819                                          PROP_CONTINUOUS,
1820                                          g_param_spec_boolean ("continuous",
1821                                                                "Continuous",
1822                                                                "Continuous scrolling mode",
1823                                                                TRUE,
1824                                                                G_PARAM_READWRITE));
1825
1826         g_object_class_install_property (object_class,
1827                                          PROP_DUAL_PAGE,
1828                                          g_param_spec_boolean ("dual-page",
1829                                                                "Dual Page",
1830                                                                "Two pages visible at once",
1831                                                                FALSE,
1832                                                                G_PARAM_READWRITE));
1833         g_object_class_install_property (object_class,
1834                                          PROP_FULLSCREEN,
1835                                          g_param_spec_boolean ("fullscreen",
1836                                                                "Full Screen",
1837                                                                "Draw page in a fullscreen fashion",
1838                                                                FALSE,
1839                                                                G_PARAM_READWRITE));
1840         g_object_class_install_property (object_class,
1841                                          PROP_PRESENTATION,
1842                                          g_param_spec_boolean ("presentation",
1843                                                                "Presentation",
1844                                                                "Draw page in presentation mode",
1845                                                                TRUE,
1846                                                                G_PARAM_READWRITE));
1847
1848         g_object_class_install_property (object_class,
1849                                          PROP_SIZING_MODE,
1850                                          g_param_spec_enum ("sizing-mode",
1851                                                             "Sizing Mode",
1852                                                             "Sizing Mode",
1853                                                             EV_TYPE_SIZING_MODE,
1854                                                             EV_SIZING_FIT_WIDTH,
1855                                                             G_PARAM_READWRITE));
1856
1857         binding_set = gtk_binding_set_by_class (class);
1858
1859         add_scroll_binding_keypad (binding_set, GDK_Left,  GTK_SCROLL_STEP_BACKWARD, TRUE);
1860         add_scroll_binding_keypad (binding_set, GDK_Right, GTK_SCROLL_STEP_FORWARD,  TRUE);
1861         add_scroll_binding_keypad (binding_set, GDK_Up,    GTK_SCROLL_STEP_BACKWARD, FALSE);
1862         add_scroll_binding_keypad (binding_set, GDK_Down,  GTK_SCROLL_STEP_FORWARD,  FALSE);
1863 }
1864
1865 static void
1866 ev_view_init (EvView *view)
1867 {
1868         GTK_WIDGET_SET_FLAGS (view, GTK_CAN_FOCUS);
1869
1870         view->spacing = 10;
1871         view->scale = 1.0;
1872         view->current_page = 0;
1873         view->pressed_button = -1;
1874         view->cursor = EV_VIEW_CURSOR_NORMAL;
1875         view->drag_info.dragging = FALSE;
1876
1877         view->continuous = TRUE;
1878         view->dual_page = FALSE;
1879         view->presentation = FALSE;
1880         view->fullscreen = FALSE;
1881         view->sizing_mode = EV_SIZING_FIT_WIDTH;
1882         view->pending_scroll = SCROLL_TO_KEEP_POSITION;
1883 }
1884
1885 /*** Callbacks ***/
1886
1887 static void
1888 find_changed_cb (EvDocument *document, int page, EvView *view)
1889 {
1890         jump_to_find_page (view);
1891         jump_to_find_result (view);
1892         update_find_status_message (view);
1893
1894         if (view->current_page == page)
1895                 gtk_widget_queue_draw (GTK_WIDGET (view));
1896 }
1897
1898 static void
1899 job_finished_cb (EvPixbufCache *pixbuf_cache,
1900                  EvView        *view)
1901 {
1902         gtk_widget_queue_draw (GTK_WIDGET (view));
1903 }
1904
1905 static void
1906 page_changed_cb (EvPageCache *page_cache,
1907                  int          new_page,
1908                  EvView      *view)
1909 {
1910         if (view->current_page != new_page) {
1911
1912                 if (view->pending_scroll != SCROLL_TO_CURRENT_PAGE) {
1913                         /* Should scroll right now */
1914                         view_scroll_to_page (view, new_page);
1915                 } else {
1916                         /* We'll scroll to new page on allocate */
1917                         view->current_page = new_page;
1918                 }
1919
1920                 if (EV_IS_DOCUMENT_FIND (view->document)) {
1921                         view->find_page = new_page;
1922                         view->find_result = 0;
1923                         update_find_status_message (view);
1924                 }
1925         }
1926 }
1927
1928 static void on_adjustment_value_changed (GtkAdjustment  *adjustment,
1929                                          EvView *view)
1930 {
1931         view_update_adjustments (view);
1932 }
1933
1934 GtkWidget*
1935 ev_view_new (void)
1936 {
1937         GtkWidget *view;
1938
1939         view = g_object_new (EV_TYPE_VIEW, NULL);
1940
1941         return view;
1942 }
1943
1944 void
1945 ev_view_set_document (EvView     *view,
1946                       EvDocument *document)
1947 {
1948         g_return_if_fail (EV_IS_VIEW (view));
1949
1950         if (document != view->document) {
1951                 if (view->document) {
1952                         g_signal_handlers_disconnect_by_func (view->document,
1953                                                               find_changed_cb,
1954                                                               view);
1955                         g_object_unref (view->document);
1956                         view->page_cache = NULL;
1957
1958                 }
1959
1960                 view->document = document;
1961                 view->find_page = 0;
1962                 view->find_result = 0;
1963
1964                 if (view->document) {
1965                         g_object_ref (view->document);
1966                         if (EV_IS_DOCUMENT_FIND (view->document)) {
1967                                 g_signal_connect (view->document,
1968                                                   "find_changed",
1969                                                   G_CALLBACK (find_changed_cb),
1970                                                   view);
1971                         }
1972                         view->page_cache = ev_document_get_page_cache (view->document);
1973                         view->pending_scroll = SCROLL_TO_CURRENT_PAGE;
1974                         g_signal_connect (view->page_cache, "page-changed", G_CALLBACK (page_changed_cb), view);
1975                         view->pixbuf_cache = ev_pixbuf_cache_new (view->document);
1976                         g_signal_connect (view->pixbuf_cache, "job-finished", G_CALLBACK (job_finished_cb), view);
1977                 }
1978
1979                 gtk_widget_queue_resize (GTK_WIDGET (view));
1980         }
1981 }
1982
1983 /*** Zoom and sizing mode ***/
1984
1985 #define EPSILON 0.0000001
1986 void
1987 ev_view_set_zoom (EvView   *view,
1988                   double    factor,
1989                   gboolean  relative)
1990 {
1991         double scale;
1992
1993         if (relative)
1994                 scale = view->scale * factor;
1995         else
1996                 scale = factor;
1997
1998         scale = CLAMP (scale, MIN_SCALE, MAX_SCALE);
1999
2000         if (ABS (view->scale - scale) < EPSILON)
2001                 return;
2002         view->scale = scale;
2003         view->pending_resize = TRUE;
2004
2005         gtk_widget_queue_resize (GTK_WIDGET (view));
2006 }
2007
2008 double
2009 ev_view_get_zoom (EvView *view)
2010 {
2011         return view->scale;
2012 }
2013
2014 void
2015 ev_view_set_continuous (EvView   *view,
2016                         gboolean  continuous)
2017 {
2018         g_return_if_fail (EV_IS_VIEW (view));
2019
2020         continuous = continuous != FALSE;
2021
2022         if (view->continuous != continuous) {
2023                 view->continuous = continuous;
2024                 view->pending_scroll = SCROLL_TO_CURRENT_PAGE;
2025                 gtk_widget_queue_resize (GTK_WIDGET (view));
2026         }
2027
2028         g_object_notify (G_OBJECT (view), "continuous");
2029 }
2030
2031 void
2032 ev_view_set_dual_page (EvView   *view,
2033                        gboolean  dual_page)
2034 {
2035         g_return_if_fail (EV_IS_VIEW (view));
2036
2037         dual_page = dual_page != FALSE;
2038
2039         if (view->dual_page == dual_page)
2040                 return;
2041
2042         view->pending_scroll = SCROLL_TO_CURRENT_PAGE;
2043         view->dual_page = dual_page;
2044         /* FIXME: if we're keeping the pixbuf cache around, we should extend the
2045          * preload_cache_size to be 2 if dual_page is set.
2046          */
2047         gtk_widget_queue_resize (GTK_WIDGET (view));
2048
2049         g_object_notify (G_OBJECT (view), "dual-page");
2050 }
2051
2052 void
2053 ev_view_set_fullscreen (EvView   *view,
2054                          gboolean  fullscreen)
2055 {
2056         g_return_if_fail (EV_IS_VIEW (view));
2057
2058         fullscreen = fullscreen != FALSE;
2059
2060         if (view->fullscreen != fullscreen) {
2061                 view->fullscreen = fullscreen;
2062                 gtk_widget_queue_resize (GTK_WIDGET (view));
2063         }
2064
2065         g_object_notify (G_OBJECT (view), "fullscreen");
2066 }
2067
2068 gboolean
2069 ev_view_get_fullscreen (EvView *view)
2070 {
2071         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
2072
2073         return view->fullscreen;
2074 }
2075
2076 void
2077 ev_view_set_presentation (EvView   *view,
2078                           gboolean  presentation)
2079 {
2080         g_return_if_fail (EV_IS_VIEW (view));
2081
2082         presentation = presentation != FALSE;
2083
2084         if (view->presentation == presentation)
2085                 return;
2086
2087         view->presentation = presentation;
2088         gtk_widget_queue_resize (GTK_WIDGET (view));
2089         if (GTK_WIDGET_REALIZED (view)) {
2090                 if (view->presentation)
2091                         gdk_window_set_background (GTK_WIDGET(view)->window,
2092                                                    &GTK_WIDGET (view)->style->black);
2093                 else
2094                         gdk_window_set_background (GTK_WIDGET(view)->window,
2095                                                    &GTK_WIDGET (view)->style->mid [GTK_STATE_NORMAL]);
2096         }
2097
2098
2099         g_object_notify (G_OBJECT (view), "presentation");
2100 }
2101
2102 gboolean
2103 ev_view_get_presentation (EvView *view)
2104 {
2105         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
2106
2107         return view->presentation;
2108 }
2109
2110 void
2111 ev_view_set_sizing_mode (EvView       *view,
2112                          EvSizingMode  sizing_mode)
2113 {
2114         g_return_if_fail (EV_IS_VIEW (view));
2115
2116         if (view->sizing_mode == sizing_mode)
2117                 return;
2118
2119         view->sizing_mode = sizing_mode;
2120         gtk_widget_queue_resize (GTK_WIDGET (view));
2121
2122         g_object_notify (G_OBJECT (view), "sizing-mode");
2123 }
2124
2125 EvSizingMode
2126 ev_view_get_sizing_mode (EvView *view)
2127 {
2128         g_return_val_if_fail (EV_IS_VIEW (view), EV_SIZING_FREE);
2129
2130         return view->sizing_mode;
2131 }
2132
2133 gboolean
2134 ev_view_can_zoom_in (EvView *view)
2135 {
2136         return view->scale * ZOOM_IN_FACTOR <= MAX_SCALE;
2137 }
2138
2139 gboolean
2140 ev_view_can_zoom_out (EvView *view)
2141 {
2142         return view->scale * ZOOM_OUT_FACTOR >= MIN_SCALE;
2143 }
2144
2145 void
2146 ev_view_zoom_in (EvView *view)
2147 {
2148         g_return_if_fail (view->sizing_mode == EV_SIZING_FREE);
2149
2150         view->pending_scroll = SCROLL_TO_CENTER;
2151         ev_view_set_zoom (view, ZOOM_IN_FACTOR, TRUE);
2152 }
2153
2154 void
2155 ev_view_zoom_out (EvView *view)
2156 {
2157         g_return_if_fail (view->sizing_mode == EV_SIZING_FREE);
2158
2159         view->pending_scroll = SCROLL_TO_CENTER;
2160         ev_view_set_zoom (view, ZOOM_OUT_FACTOR, TRUE);
2161 }
2162
2163 static double
2164 zoom_for_size_fit_width (int doc_width,
2165                          int doc_height,
2166                          int target_width,
2167                          int target_height,
2168                          int vsb_width)
2169 {
2170         double scale;
2171
2172         scale = (double)target_width / doc_width;
2173
2174         if (doc_height * scale > target_height)
2175                 scale = (double) (target_width - vsb_width) / doc_width;
2176
2177         return scale;
2178 }
2179
2180 static double
2181 zoom_for_size_best_fit (int doc_width,
2182                         int doc_height,
2183                         int target_width,
2184                         int target_height,
2185                         int vsb_width,
2186                         int hsb_width)
2187 {
2188         double w_scale;
2189         double h_scale;
2190
2191         w_scale = (double)target_width / doc_width;
2192         h_scale = (double)target_height / doc_height;
2193
2194         if (doc_height * w_scale > target_height)
2195                 w_scale = (double) (target_width - vsb_width) / doc_width;
2196         if (doc_width * h_scale > target_width)
2197                 h_scale = (double) (target_height - hsb_width) / doc_height;
2198
2199         return MIN (w_scale, h_scale);
2200 }
2201
2202
2203 static void
2204 ev_view_zoom_for_size_presentation (EvView *view,
2205                                     int     width,
2206                                     int     height)
2207 {
2208         int doc_width, doc_height;
2209         gdouble scale;
2210
2211         ev_page_cache_get_size (view->page_cache,
2212                                 view->current_page,
2213                                 1.0,
2214                                 &doc_width,
2215                                 &doc_height);
2216         scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, 0, 0);
2217         ev_view_set_zoom (view, scale, FALSE);
2218 }
2219
2220 static void
2221 ev_view_zoom_for_size_continuous_and_dual_page (EvView *view,
2222                            int     width,
2223                            int     height,
2224                            int     vsb_width,
2225                            int     hsb_height)
2226 {
2227         int doc_width, doc_height;
2228         GtkBorder border;
2229         gdouble scale;
2230
2231         ev_page_cache_get_max_width_size (view->page_cache,
2232                                           1.0,
2233                                           &doc_width, NULL);
2234         ev_page_cache_get_max_height_size (view->page_cache,
2235                                            1.0,
2236                                            NULL, &doc_height);
2237         compute_border (view, doc_width, doc_height, &border);
2238
2239         doc_width = doc_width * 2;
2240         width -= (2 * (border.left + border.right) + 3 * view->spacing);
2241         height -= (border.top + border.bottom + 2 * view->spacing - 1);
2242
2243         /* FIXME: We really need to calculate the overall height here, not the
2244          * page height.  We assume there's always a vertical scrollbar for
2245          * now.  We need to fix this. */
2246         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
2247                 scale = zoom_for_size_fit_width (doc_width, doc_height, width - vsb_width, height, 0);
2248         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
2249                 scale = zoom_for_size_best_fit (doc_width, doc_height, width - vsb_width, height, 0, hsb_height);
2250         else
2251                 g_assert_not_reached ();
2252
2253         ev_view_set_zoom (view, scale, FALSE);
2254 }
2255
2256 static void
2257 ev_view_zoom_for_size_continuous (EvView *view,
2258                                   int     width,
2259                                   int     height,
2260                                   int     vsb_width,
2261                                   int     hsb_height)
2262 {
2263         int doc_width, doc_height;
2264         GtkBorder border;
2265         gdouble scale;
2266
2267         ev_page_cache_get_max_width_size (view->page_cache,
2268                                           1.0,
2269                                           &doc_width, NULL);
2270         ev_page_cache_get_max_height_size (view->page_cache,
2271                                            1.0,
2272                                            NULL, &doc_height);
2273         compute_border (view, doc_width, doc_height, &border);
2274
2275         width -= (border.left + border.right + 2 * view->spacing);
2276         height -= (border.top + border.bottom + 2 * view->spacing - 1);
2277
2278         /* FIXME: We really need to calculate the overall height here, not the
2279          * page height.  We assume there's always a vertical scrollbar for
2280          * now.  We need to fix this. */
2281         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
2282                 scale = zoom_for_size_fit_width (doc_width, doc_height, width - vsb_width, height, 0);
2283         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
2284                 scale = zoom_for_size_best_fit (doc_width, doc_height, width - vsb_width, height, 0, hsb_height);
2285         else
2286                 g_assert_not_reached ();
2287
2288         ev_view_set_zoom (view, scale, FALSE);
2289 }
2290
2291 static void
2292 ev_view_zoom_for_size_dual_page (EvView *view,
2293                                  int     width,
2294                                  int     height,
2295                                  int     vsb_width,
2296                                  int     hsb_height)
2297 {
2298         GtkBorder border;
2299         gint doc_width, doc_height;
2300         gdouble scale;
2301         gint other_page;
2302
2303         other_page = view->current_page ^ 1;
2304
2305         /* Find the largest of the two. */
2306         ev_page_cache_get_size (view->page_cache,
2307                                 view->current_page,
2308                                 1.0,
2309                                 &doc_width, &doc_height);
2310
2311         if (other_page < ev_page_cache_get_n_pages (view->page_cache)) {
2312                 gint width_2, height_2;
2313                 ev_page_cache_get_size (view->page_cache,
2314                                         other_page,
2315                                         1.0,
2316                                         &width_2, &height_2);
2317                 if (width_2 > doc_width)
2318                         doc_width = width_2;
2319                 if (height_2 > doc_height)
2320                         doc_height = height_2;
2321         }
2322         compute_border (view, doc_width, doc_height, &border);
2323
2324         doc_width = doc_width * 2;
2325         width -= ((border.left + border.right)* 2 + 3 * view->spacing);
2326         height -= (border.top + border.bottom + 2 * view->spacing);
2327
2328         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
2329                 scale = zoom_for_size_fit_width (doc_width, doc_height, width, height, vsb_width);
2330         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
2331                 scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, vsb_width, hsb_height);
2332         else
2333                 g_assert_not_reached ();
2334
2335         ev_view_set_zoom (view, scale, FALSE);
2336 }
2337
2338 static void
2339 ev_view_zoom_for_size_single_page (EvView *view,
2340                                    int     width,
2341                                    int     height,
2342                                    int     vsb_width,
2343                                    int     hsb_height)
2344 {
2345         int doc_width, doc_height;
2346         GtkBorder border;
2347         gdouble scale;
2348
2349         ev_page_cache_get_size (view->page_cache,
2350                                 view->current_page,
2351                                 1.0,
2352                                 &doc_width,
2353                                 &doc_height);
2354         /* Get an approximate border */
2355         compute_border (view, width, height, &border);
2356
2357         width -= (border.left + border.right + 2 * view->spacing);
2358         height -= (border.top + border.bottom + 2 * view->spacing);
2359
2360         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
2361                 scale = zoom_for_size_fit_width (doc_width, doc_height, width, height, vsb_width);
2362         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
2363                 scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, vsb_width, hsb_height);
2364         else
2365                 g_assert_not_reached ();
2366
2367         ev_view_set_zoom (view, scale, FALSE);
2368 }
2369
2370 void
2371 ev_view_set_zoom_for_size (EvView *view,
2372                            int     width,
2373                            int     height,
2374                            int     vsb_width,
2375                            int     hsb_height)
2376 {
2377         g_return_if_fail (view->sizing_mode == EV_SIZING_FIT_WIDTH ||
2378                           view->sizing_mode == EV_SIZING_BEST_FIT);
2379         g_return_if_fail (width >= 0);
2380         g_return_if_fail (height >= 0);
2381
2382         if (view->document == NULL)
2383                 return;
2384
2385         if (view->presentation)
2386                 ev_view_zoom_for_size_presentation (view, width, height);
2387         else if (view->continuous && view->dual_page)
2388                 ev_view_zoom_for_size_continuous_and_dual_page (view, width, height, vsb_width, hsb_height);
2389         else if (view->continuous)
2390                 ev_view_zoom_for_size_continuous (view, width, height, vsb_width, hsb_height);
2391         else if (view->dual_page)
2392                 ev_view_zoom_for_size_dual_page (view, width, height, vsb_width, hsb_height);
2393         else
2394                 ev_view_zoom_for_size_single_page (view, width, height, vsb_width, hsb_height);
2395 }
2396
2397 /*** Status text messages ***/
2398
2399 const char *
2400 ev_view_get_status (EvView *view)
2401 {
2402         g_return_val_if_fail (EV_IS_VIEW (view), NULL);
2403
2404         return view->status;
2405 }
2406
2407 static void
2408 ev_view_set_status (EvView *view, const char *message)
2409 {
2410         g_return_if_fail (EV_IS_VIEW (view));
2411
2412         if (message != view->status) {
2413                 g_free (view->status);
2414                 view->status = g_strdup (message);
2415                 g_object_notify (G_OBJECT (view), "status");
2416         }
2417 }
2418
2419 static void
2420 update_find_status_message (EvView *view)
2421 {
2422         char *message;
2423
2424         if (view->current_page == view->find_page) {
2425                 int results;
2426
2427                 results = ev_document_find_get_n_results
2428                                 (EV_DOCUMENT_FIND (view->document),
2429                                  view->current_page);
2430                 /* TRANS: Sometimes this could be better translated as
2431                    "%d hit(s) on this page".  Therefore this string
2432                    contains plural cases. */
2433                 message = g_strdup_printf (ngettext ("%d found on this page",
2434                                                      "%d found on this page",
2435                                                      results),
2436                                            results);
2437         } else {
2438                 double percent;
2439
2440                 ev_document_doc_mutex_lock ();
2441                 percent = ev_document_find_get_progress
2442                                 (EV_DOCUMENT_FIND (view->document));
2443                 ev_document_doc_mutex_unlock ();
2444                 if (percent >= (1.0 - 1e-10)) {
2445                         message = g_strdup (_("Not found"));
2446                 } else {
2447                         message = g_strdup_printf (_("%3d%% remaining to search"),
2448                                                    (int) ((1.0 - percent) * 100));
2449                 }
2450
2451         }
2452         ev_view_set_find_status (view, message);
2453 }
2454
2455 const char *
2456 ev_view_get_find_status (EvView *view)
2457 {
2458         g_return_val_if_fail (EV_IS_VIEW (view), NULL);
2459
2460         return view->find_status;
2461 }
2462
2463 static void
2464 ev_view_set_find_status (EvView *view, const char *message)
2465 {
2466         g_return_if_fail (EV_IS_VIEW (view));
2467
2468         g_free (view->find_status);
2469         view->find_status = g_strdup (message);
2470         g_object_notify (G_OBJECT (view), "find-status");
2471 }
2472
2473 /*** Find ***/
2474
2475 static void
2476 jump_to_find_result (EvView *view)
2477 {
2478         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
2479         EvRectangle rect;
2480         GdkRectangle view_rect;
2481         int n_results;
2482         int page = view->find_page;
2483
2484         ev_document_doc_mutex_lock ();
2485         n_results = ev_document_find_get_n_results (find, page);
2486         ev_document_doc_mutex_unlock ();
2487
2488         if (n_results > view->find_result) {
2489                 ev_document_doc_mutex_lock ();
2490                 ev_document_find_get_result
2491                         (find, page, view->find_result, &rect);
2492                 ev_document_doc_mutex_unlock ();
2493
2494                 doc_rect_to_view_rect (view, page, &rect, &view_rect);
2495                 ensure_rectangle_is_visible (view, &view_rect);
2496         }
2497 }
2498
2499 static void
2500 jump_to_find_page (EvView *view)
2501 {
2502         int n_pages, i;
2503
2504         n_pages = ev_page_cache_get_n_pages (view->page_cache);
2505
2506         for (i = 0; i < n_pages; i++) {
2507                 int has_results;
2508                 int page;
2509
2510                 page = i + view->find_page;
2511                 if (page >= n_pages) {
2512                         page = page - n_pages;
2513                 }
2514
2515                 has_results = ev_document_find_page_has_results
2516                                 (EV_DOCUMENT_FIND (view->document), page);
2517                 if (has_results == -1) {
2518                         view->find_page = page;
2519                         break;
2520                 } else if (has_results == 1) {
2521                         ev_page_cache_set_current_page (view->page_cache, page);
2522                         jump_to_find_result (view);
2523                         break;
2524                 }
2525         }
2526 }
2527
2528 gboolean
2529 ev_view_can_find_next (EvView *view)
2530 {
2531         int n_results = 0;
2532
2533         if (EV_IS_DOCUMENT_FIND (view->document)) {
2534                 EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
2535
2536                 ev_document_doc_mutex_lock ();
2537                 n_results = ev_document_find_get_n_results (find, view->current_page);
2538                 ev_document_doc_mutex_unlock ();
2539         }
2540
2541         return n_results > 0;
2542 }
2543
2544 void
2545 ev_view_find_next (EvView *view)
2546 {
2547         EvPageCache *page_cache;
2548         int n_results, n_pages;
2549         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
2550
2551         page_cache = ev_document_get_page_cache (view->document);
2552         ev_document_doc_mutex_lock ();
2553         n_results = ev_document_find_get_n_results (find, view->current_page);
2554         ev_document_doc_mutex_unlock ();
2555
2556         n_pages = ev_page_cache_get_n_pages (page_cache);
2557
2558         view->find_result++;
2559
2560         if (view->find_result >= n_results) {
2561                 view->find_result = 0;
2562                 view->find_page++;
2563
2564                 if (view->find_page >= n_pages) {
2565                         view->find_page = 0;
2566                 }
2567
2568                 jump_to_find_page (view);
2569         } else {
2570                 jump_to_find_result (view);
2571                 gtk_widget_queue_draw (GTK_WIDGET (view));
2572         }
2573 }
2574
2575 void
2576 ev_view_find_previous (EvView *view)
2577 {
2578         int n_results, n_pages;
2579         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
2580         EvPageCache *page_cache;
2581
2582         page_cache = ev_document_get_page_cache (view->document);
2583
2584         ev_document_doc_mutex_lock ();
2585         n_results = ev_document_find_get_n_results (find, view->current_page);
2586         ev_document_doc_mutex_unlock ();
2587
2588         n_pages = ev_page_cache_get_n_pages (page_cache);
2589
2590         view->find_result--;
2591
2592         if (view->find_result < 0) {
2593                 view->find_result = 0;
2594                 view->find_page--;
2595
2596                 if (view->find_page < 0) {
2597                         view->find_page = n_pages - 1;
2598                 }
2599
2600                 jump_to_find_page (view);
2601         } else {
2602                 jump_to_find_result (view);
2603                 gtk_widget_queue_draw (GTK_WIDGET (view));
2604         }
2605 }
2606
2607 /*** Selections ***/
2608
2609 static void
2610 compute_selections (EvView *view, GdkRectangle *view_rect)
2611 {
2612         int n_pages, i;
2613
2614         clear_selection (view);
2615
2616         n_pages = ev_page_cache_get_n_pages (view->page_cache);
2617         for (i = 0; i < n_pages; i++) {
2618                 GdkRectangle page_area;
2619                 GtkBorder border;
2620
2621                 if (get_page_extents (view, i, &page_area, &border)) {
2622                         GdkRectangle overlap;
2623
2624                         if (gdk_rectangle_intersect (&page_area, view_rect, &overlap)) {
2625                                 EvViewSelection *selection;
2626
2627                                 selection = g_new0 (EvViewSelection, 1);
2628                                 selection->page = i;
2629                                 view_rect_to_doc_rect (view, &overlap, &page_area,
2630                                                        &(selection->rect));
2631
2632                                 view->selections = g_list_append
2633                                                 (view->selections, selection);
2634                         }
2635                 }
2636         }
2637 }
2638
2639 static void
2640 clear_selection (EvView *view)
2641 {
2642         g_list_foreach (view->selections, (GFunc)g_free, NULL);
2643         view->selections = NULL;
2644 }
2645
2646
2647 void
2648 ev_view_select_all (EvView *view)
2649 {
2650         int n_pages, i;
2651
2652         clear_selection (view);
2653
2654         n_pages = ev_page_cache_get_n_pages (view->page_cache);
2655         for (i = 0; i < n_pages; i++) {
2656                 int width, height;
2657                 EvViewSelection *selection;
2658
2659                 ev_page_cache_get_size (view->page_cache,
2660                                         i, 1.0, &width, &height);
2661
2662                 selection = g_new0 (EvViewSelection, 1);
2663                 selection->page = i;
2664                 selection->rect.x1 = selection->rect.y1 = 0;
2665                 selection->rect.x2 = width;
2666                 selection->rect.y2 = height;
2667
2668                 view->selections = g_list_append (view->selections, selection);
2669         }
2670
2671         gtk_widget_queue_draw (GTK_WIDGET (view));
2672 }
2673
2674 static char *
2675 get_selected_text (EvView *ev_view)
2676 {
2677         GString *text;
2678         GList *l;
2679
2680         text = g_string_new (NULL);
2681
2682         ev_document_doc_mutex_lock ();
2683
2684         for (l = ev_view->selections; l != NULL; l = l->next) {
2685                 EvViewSelection *selection = (EvViewSelection *)l->data;
2686                 char *tmp;
2687
2688                 tmp = ev_document_get_text (ev_view->document,
2689                                             selection->page,
2690                                             &selection->rect);
2691                 g_string_append (text, tmp);
2692                 g_free (tmp);
2693         }
2694
2695         ev_document_doc_mutex_unlock ();
2696
2697         return g_string_free (text, FALSE);
2698 }
2699
2700 void
2701 ev_view_copy (EvView *ev_view)
2702 {
2703         GtkClipboard *clipboard;
2704         char *text;
2705
2706         if (!ev_document_can_get_text (ev_view->document)) {
2707                 return;
2708         }
2709
2710         text = get_selected_text (ev_view);
2711         clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view),
2712                                               GDK_SELECTION_CLIPBOARD);
2713         gtk_clipboard_set_text (clipboard, text, -1);
2714         g_free (text);
2715 }
2716
2717 static void
2718 ev_view_primary_get_cb (GtkClipboard     *clipboard,
2719                         GtkSelectionData *selection_data,
2720                         guint             info,
2721                         gpointer          data)
2722 {
2723         EvView *ev_view = EV_VIEW (data);
2724         char *text;
2725
2726         if (!ev_document_can_get_text (ev_view->document)) {
2727                 return;
2728         }
2729
2730         text = get_selected_text (ev_view);
2731         gtk_selection_data_set_text (selection_data, text, -1);
2732         g_free (text);
2733 }
2734
2735 static void
2736 ev_view_primary_clear_cb (GtkClipboard *clipboard,
2737                           gpointer      data)
2738 {
2739         EvView *view = EV_VIEW (data);
2740
2741         clear_selection (view);
2742 }
2743
2744 static void
2745 ev_view_update_primary_selection (EvView *ev_view)
2746 {
2747         GtkClipboard *clipboard;
2748
2749         clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view),
2750                                               GDK_SELECTION_PRIMARY);
2751
2752         if (ev_view->selections) {
2753                 if (!gtk_clipboard_set_with_owner (clipboard,
2754                                                    targets,
2755                                                    G_N_ELEMENTS (targets),
2756                                                    ev_view_primary_get_cb,
2757                                                    ev_view_primary_clear_cb,
2758                                                    G_OBJECT (ev_view)))
2759                         ev_view_primary_clear_cb (clipboard, ev_view);
2760         } else {
2761                 if (gtk_clipboard_get_owner (clipboard) == G_OBJECT (ev_view))
2762                         gtk_clipboard_clear (clipboard);
2763         }
2764 }
2765
2766 /*** Cursor operations ***/
2767
2768 static GdkCursor *
2769 ev_view_create_invisible_cursor(void)
2770 {
2771        GdkBitmap *empty;
2772        GdkColor black = { 0, 0, 0, 0 };
2773        static char bits[] = { 0x00 };
2774
2775        empty = gdk_bitmap_create_from_data (NULL, bits, 1, 1);
2776
2777        return gdk_cursor_new_from_pixmap (empty, empty, &black, &black, 0, 0);
2778 }
2779
2780 static void
2781 ev_view_set_cursor (EvView *view, EvViewCursor new_cursor)
2782 {
2783         GdkCursor *cursor = NULL;
2784         GdkDisplay *display;
2785         GtkWidget *widget;
2786
2787         if (view->cursor == new_cursor) {
2788                 return;
2789         }
2790
2791         widget = gtk_widget_get_toplevel (GTK_WIDGET (view));
2792         display = gtk_widget_get_display (widget);
2793         view->cursor = new_cursor;
2794
2795         switch (new_cursor) {
2796                 case EV_VIEW_CURSOR_NORMAL:
2797                         gdk_window_set_cursor (widget->window, NULL);
2798                         break;
2799                 case EV_VIEW_CURSOR_LINK:
2800                         cursor = gdk_cursor_new_for_display (display, GDK_HAND2);
2801                         break;
2802                 case EV_VIEW_CURSOR_WAIT:
2803                         cursor = gdk_cursor_new_for_display (display, GDK_WATCH);
2804                         break;
2805                 case EV_VIEW_CURSOR_HIDDEN:
2806                         cursor = ev_view_create_invisible_cursor ();
2807                         break;
2808                 case EV_VIEW_CURSOR_DRAG:
2809                         cursor = gdk_cursor_new_for_display (display, GDK_FLEUR);
2810                         break;
2811         }
2812
2813         if (cursor) {
2814                 gdk_window_set_cursor (widget->window, cursor);
2815                 gdk_cursor_unref (cursor);
2816                 gdk_flush();
2817         }
2818 }
2819
2820 void
2821 ev_view_hide_cursor (EvView *view)
2822 {
2823        ev_view_set_cursor (view, EV_VIEW_CURSOR_HIDDEN);
2824 }
2825
2826 void
2827 ev_view_show_cursor (EvView *view)
2828 {
2829        ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
2830 }
2831
2832 /*** Enum description for usage in signal ***/
2833
2834 GType
2835 ev_sizing_mode_get_type (void)
2836 {
2837   static GType etype = 0;
2838   if (etype == 0) {
2839     static const GEnumValue values[] = {
2840       { EV_SIZING_FIT_WIDTH, "EV_SIZING_FIT_WIDTH", "fit-width" },
2841       { EV_SIZING_BEST_FIT, "EV_SIZING_BEST_FIT", "best-fit" },
2842       { EV_SIZING_FREE, "EV_SIZING_FREE", "free" },
2843       { 0, NULL, NULL }
2844     };
2845     etype = g_enum_register_static ("EvSizingMode", values);
2846   }
2847   return etype;
2848 }
2849