shell/ev-view.c

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