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 <gtk/gtkalignment.h>
  22 #include <glib/gi18n.h>
  23 #include <gtk/gtkbindings.h>
  24 #include <gtk/gtkselection.h>
  25 #include <gtk/gtkclipboard.h>
  26 #include <gdk/gdkkeysyms.h>
  27 #include <libgnomevfs/gnome-vfs-utils.h>
  28
  29 #include "ev-marshal.h"
  30 #include "ev-view.h"
  31 #include "ev-document-find.h"
  32 #include "ev-document-misc.h"
  33 #include "ev-debug.h"
  34 #include "ev-job-queue.h"
  35 #include "ev-page-cache.h"
  36 #include "ev-pixbuf-cache.h"
  37
  38 #define EV_VIEW_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass), EV_TYPE_VIEW, EvViewClass))
  39 #define EV_IS_VIEW_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), EV_TYPE_VIEW))
  40 #define EV_VIEW_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj), EV_TYPE_VIEW, EvViewClass))
  41
  42 enum {
  43         PROP_0,
  44         PROP_STATUS,
  45         PROP_FIND_STATUS
  46 };
  47
  48 enum {
  49   TARGET_STRING,
  50   TARGET_TEXT,
  51   TARGET_COMPOUND_TEXT,
  52   TARGET_UTF8_STRING,
  53   TARGET_TEXT_BUFFER_CONTENTS
  54 };
  55
  56 static const GtkTargetEntry targets[] = {
  57         { "STRING", 0, TARGET_STRING },
  58         { "TEXT",   0, TARGET_TEXT },
  59         { "COMPOUND_TEXT", 0, TARGET_COMPOUND_TEXT },
  60         { "UTF8_STRING", 0, TARGET_UTF8_STRING },
  61 };
  62
  63 typedef enum {
  64         EV_VIEW_CURSOR_NORMAL,
  65         EV_VIEW_CURSOR_LINK,
  66         EV_VIEW_CURSOR_WAIT,
  67         EV_VIEW_CURSOR_HIDDEN
  68 } EvViewCursor;
  69
  70 #define ZOOM_IN_FACTOR  1.2
  71 #define ZOOM_OUT_FACTOR (1.0/ZOOM_IN_FACTOR)
  72
  73 #define MIN_SCALE 0.05409
  74 #define MAX_SCALE 18.4884
  75
  76 struct _EvView {
  77         GtkWidget parent_instance;
  78
  79         EvDocument *document;
  80
  81         GdkWindow *bin_window;
  82
  83         char *status;
  84         char *find_status;
  85
  86         int scroll_x;
  87         int scroll_y;
  88
  89         gboolean pressed_button;
  90         gboolean has_selection;
  91         GdkPoint selection_start;
  92         GdkRectangle selection;
  93         EvViewCursor cursor;
  94
  95         GtkAdjustment *hadjustment;
  96         GtkAdjustment *vadjustment;
  97
  98         EvPageCache *page_cache;
  99         EvPixbufCache *pixbuf_cache;
 100
 101         gint current_page;
 102         EvJobRender *current_job;
 103
 104         int find_page;
 105         int find_result;
 106         int spacing;
 107
 108         double scale;
 109         int width;
 110         int height;
 111 };
 112
 113 struct _EvViewClass {
 114         GtkWidgetClass parent_class;
 115
 116         void    (*set_scroll_adjustments) (EvView         *view,
 117                                            GtkAdjustment  *hadjustment,
 118                                            GtkAdjustment  *vadjustment);
 119         void    (*scroll_view)            (EvView         *view,
 120                                            GtkScrollType   scroll,
 121                                            gboolean        horizontal);
 122
 123 };
 124
 125
 126 static void ev_view_set_scroll_adjustments (EvView         *view,
 127                                             GtkAdjustment  *hadjustment,
 128                                             GtkAdjustment  *vadjustment);
 129
 130 G_DEFINE_TYPE (EvView, ev_view, GTK_TYPE_WIDGET)
 131
 132 /*** Helper functions ***/
 133
 134 static void
 135 view_update_adjustments (EvView *view)
 136 {
 137         int old_x = view->scroll_x;
 138         int old_y = view->scroll_y;
 139
 140         if (view->hadjustment)
 141                 view->scroll_x = view->hadjustment->value;
 142         else
 143                 view->scroll_x = 0;
 144
 145         if (view->vadjustment)
 146                 view->scroll_y = view->vadjustment->value;
 147         else
 148                 view->scroll_y = 0;
 149
 150         if (GTK_WIDGET_REALIZED (view) &&
 151             (view->scroll_x != old_x || view->scroll_y != old_y)) {
 152                 gdk_window_move (view->bin_window, - view->scroll_x, - view->scroll_y);
 153                 gdk_window_process_updates (view->bin_window, TRUE);
 154         }
 155 }
 156
 157 static void
 158 view_set_adjustment_values (EvView         *view,
 159                             GtkOrientation  orientation)
 160 {
 161         GtkWidget *widget = GTK_WIDGET (view);
 162         GtkAdjustment *adjustment;
 163         gboolean value_changed = FALSE;
 164         int requisition;
 165         int allocation;
 166
 167         if (orientation == GTK_ORIENTATION_HORIZONTAL)  {
 168                 requisition = widget->requisition.width;
 169                 allocation = widget->allocation.width;
 170                 adjustment = view->hadjustment;
 171         } else {
 172                 requisition = widget->requisition.height;
 173                 allocation = widget->allocation.height;
 174                 adjustment = view->vadjustment;
 175         }
 176
 177         if (!adjustment)
 178                 return;
 179
 180         adjustment->page_size = allocation;
 181         adjustment->step_increment = allocation * 0.1;
 182         adjustment->page_increment = allocation * 0.9;
 183         adjustment->lower = 0;
 184         adjustment->upper = MAX (allocation, requisition);
 185
 186         if (adjustment->value > adjustment->upper - adjustment->page_size) {
 187                 adjustment->value = adjustment->upper - adjustment->page_size;
 188                 value_changed = TRUE;
 189         }
 190
 191         gtk_adjustment_changed (adjustment);
 192         if (value_changed)
 193                 gtk_adjustment_value_changed (adjustment);
 194 }
 195
 196 /*** Virtual function implementations ***/
 197
 198 static void
 199 ev_view_finalize (GObject *object)
 200 {
 201         EvView *view = EV_VIEW (object);
 202
 203         LOG ("Finalize");
 204
 205
 206         ev_view_set_scroll_adjustments (view, NULL, NULL);
 207
 208         G_OBJECT_CLASS (ev_view_parent_class)->finalize (object);
 209 }
 210
 211 static void
 212 ev_view_destroy (GtkObject *object)
 213 {
 214         EvView *view = EV_VIEW (object);
 215
 216         if (view->document) {
 217                 g_object_unref (view->document);
 218                 view->document = NULL;
 219         }
 220         if (view->pixbuf_cache) {
 221                 g_object_unref (view->pixbuf_cache);
 222                 view->pixbuf_cache = NULL;
 223         }
 224         ev_view_set_scroll_adjustments (view, NULL, NULL);
 225
 226         GTK_OBJECT_CLASS (ev_view_parent_class)->destroy (object);
 227 }
 228
 229 static void
 230 ev_view_get_offsets (EvView *view, int *x_offset, int *y_offset)
 231 {
 232         EvDocument *document = view->document;
 233         GtkWidget *widget = GTK_WIDGET (view);
 234         int width, height, target_width, target_height;
 235         GtkBorder border;
 236
 237         g_return_if_fail (EV_IS_DOCUMENT (document));
 238
 239         ev_page_cache_get_size (view->page_cache,
 240                                 view->current_page,
 241                                 view->scale,
 242                                 &width, &height);
 243
 244         ev_document_misc_get_page_border_size (width, height, &border);
 245
 246         *x_offset = view->spacing;
 247         *y_offset = view->spacing;
 248         target_width = width + border.left + border.right + view->spacing * 2;
 249         target_height = height + border.top + border.bottom + view->spacing * 2;
 250         *x_offset += MAX (0, (widget->allocation.width - target_width) / 2);
 251         *y_offset += MAX (0, (widget->allocation.height - target_height) / 2);
 252 }
 253
 254 static void
 255 view_rect_to_doc_rect (EvView *view, GdkRectangle *view_rect, GdkRectangle *doc_rect)
 256 {
 257         int x_offset, y_offset;
 258
 259         ev_view_get_offsets (view, &x_offset, &y_offset);
 260         doc_rect->x = (view_rect->x - x_offset) / view->scale;
 261         doc_rect->y = (view_rect->y - y_offset) / view->scale;
 262         doc_rect->width = view_rect->width / view->scale;
 263         doc_rect->height = view_rect->height / view->scale;
 264 }
 265
 266 static void
 267 doc_rect_to_view_rect (EvView *view, GdkRectangle *doc_rect, GdkRectangle *view_rect)
 268 {
 269         int x_offset, y_offset;
 270
 271         ev_view_get_offsets (view, &x_offset, &y_offset);
 272         view_rect->x = doc_rect->x * view->scale + x_offset;
 273         view_rect->y = doc_rect->y * view->scale + y_offset;
 274         view_rect->width = doc_rect->width * view->scale;
 275         view_rect->height = doc_rect->height * view->scale;
 276 }
 277
 278
 279 /* Called by size_request to make sure we have appropriate jobs running.
 280  */
 281 static void
 282 ev_view_size_request (GtkWidget      *widget,
 283                       GtkRequisition *requisition)
 284 {
 285         EvView *view = EV_VIEW (widget);
 286         GtkBorder border;
 287         gint width, height;
 288
 289         if (!GTK_WIDGET_REALIZED (widget))
 290                 return;
 291
 292         if (!view->document) {
 293                 requisition->width = 1;
 294                 requisition->height = 1;
 295                 return;
 296         }
 297
 298         ev_page_cache_get_size (view->page_cache,
 299                                 view->current_page,
 300                                 view->scale,
 301                                 &width, &height);
 302
 303         ev_pixbuf_cache_set_page_range (view->pixbuf_cache,
 304                                         view->current_page,
 305                                         view->current_page,
 306                                         view->scale);
 307         ev_document_misc_get_page_border_size (width, height, &border);
 308
 309         if (view->width >= 0) {
 310                 requisition->width = 0;
 311         } else {
 312                 requisition->width = width + border.left + border.right +
 313                                      view->spacing * 2;
 314         }
 315
 316         if (view->height >= 0) {
 317                 requisition->height = 0;
 318         } else {
 319                 requisition->height = height + border.top + border.bottom +
 320                                       view->spacing * 2;
 321         }
 322 }
 323
 324 static void
 325 ev_view_size_allocate (GtkWidget      *widget,
 326                        GtkAllocation  *allocation)
 327 {
 328         EvView *view = EV_VIEW (widget);
 329
 330         GTK_WIDGET_CLASS (ev_view_parent_class)->size_allocate (widget, allocation);
 331
 332         view_set_adjustment_values (view, GTK_ORIENTATION_HORIZONTAL);
 333         view_set_adjustment_values (view, GTK_ORIENTATION_VERTICAL);
 334
 335         if (GTK_WIDGET_REALIZED (widget)) {
 336                 gdk_window_resize (view->bin_window,
 337                                    MAX (widget->allocation.width, widget->requisition.width),
 338                                    MAX (widget->allocation.height, widget->requisition.height));
 339         }
 340 }
 341
 342 static void
 343 ev_view_realize (GtkWidget *widget)
 344 {
 345         EvView *view = EV_VIEW (widget);
 346         GdkWindowAttr attributes;
 347
 348         GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
 349
 350
 351         attributes.window_type = GDK_WINDOW_CHILD;
 352         attributes.wclass = GDK_INPUT_OUTPUT;
 353         attributes.visual = gtk_widget_get_visual (widget);
 354         attributes.colormap = gtk_widget_get_colormap (widget);
 355
 356         attributes.x = widget->allocation.x;
 357         attributes.y = widget->allocation.y;
 358         attributes.width = widget->allocation.width;
 359         attributes.height = widget->allocation.height;
 360         attributes.event_mask = 0;
 361
 362         widget->window = gdk_window_new (gtk_widget_get_parent_window (widget),
 363                                          &attributes,
 364                                          GDK_WA_X | GDK_WA_Y |
 365                                          GDK_WA_COLORMAP |
 366                                          GDK_WA_VISUAL);
 367         gdk_window_set_user_data (widget->window, widget);
 368         widget->style = gtk_style_attach (widget->style, widget->window);
 369         gdk_window_set_background (widget->window, &widget->style->mid[widget->state]);
 370
 371         attributes.x = 0;
 372         attributes.y = 0;
 373         attributes.width = MAX (widget->allocation.width, widget->requisition.width);
 374         attributes.height = MAX (widget->allocation.height, widget->requisition.height);
 375         attributes.event_mask = GDK_EXPOSURE_MASK |
 376                                 GDK_BUTTON_PRESS_MASK |
 377                                 GDK_BUTTON_RELEASE_MASK |
 378                                 GDK_SCROLL_MASK |
 379                                 GDK_KEY_PRESS_MASK |
 380                                 GDK_POINTER_MOTION_MASK |
 381                                 GDK_LEAVE_NOTIFY_MASK;
 382
 383         view->bin_window = gdk_window_new (widget->window,
 384                                            &attributes,
 385                                            GDK_WA_X | GDK_WA_Y |
 386                                            GDK_WA_COLORMAP |
 387                                            GDK_WA_VISUAL);
 388         gdk_window_set_user_data (view->bin_window, widget);
 389         gdk_window_show (view->bin_window);
 390
 391         widget->style = gtk_style_attach (widget->style, view->bin_window);
 392         gdk_window_set_background (view->bin_window, &widget->style->mid[widget->state]);
 393
 394         if (view->document) {
 395                 /* We can't get page size without a target, so we have to
 396                  * queue a size request at realization. Could be fixed
 397                  * with EvDocument changes to allow setting a GdkScreen
 398                  * without setting a target.
 399                  */
 400                 gtk_widget_queue_resize (widget);
 401         }
 402 }
 403
 404 static void
 405 ev_view_unrealize (GtkWidget *widget)
 406 {
 407         EvView *view = EV_VIEW (widget);
 408
 409         gdk_window_set_user_data (view->bin_window, NULL);
 410         gdk_window_destroy (view->bin_window);
 411         view->bin_window = NULL;
 412
 413         GTK_WIDGET_CLASS (ev_view_parent_class)->unrealize (widget);
 414 }
 415
 416 static guint32
 417 ev_gdk_color_to_rgb (const GdkColor *color)
 418 {
 419   guint32 result;
 420   result = (0xff0000 | (color->red & 0xff00));
 421   result <<= 8;
 422   result |= ((color->green & 0xff00) | (color->blue >> 8));
 423   return result;
 424 }
 425
 426 static void
 427 draw_rubberband (GtkWidget *widget, GdkWindow *window,
 428                  const GdkRectangle *rect, guchar alpha)
 429 {
 430         GdkGC *gc;
 431         GdkPixbuf *pixbuf;
 432         GdkColor *fill_color_gdk;
 433         guint fill_color;
 434
 435         fill_color_gdk = gdk_color_copy (&GTK_WIDGET (widget)->style->base[GTK_STATE_SELECTED]);
 436         fill_color = ev_gdk_color_to_rgb (fill_color_gdk) << 8 | alpha;
 437
 438         pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE, 8,
 439                                  rect->width, rect->height);
 440         gdk_pixbuf_fill (pixbuf, fill_color);
 441
 442         gdk_draw_pixbuf (window, NULL, pixbuf,
 443                          0, 0,
 444                          rect->x,rect->y,
 445                          rect->width, rect->height,
 446                          GDK_RGB_DITHER_NONE,
 447                          0, 0);
 448
 449         g_object_unref (pixbuf);
 450
 451         gc = gdk_gc_new (window);
 452         gdk_gc_set_rgb_fg_color (gc, fill_color_gdk);
 453         gdk_draw_rectangle (window, gc, FALSE,
 454                             rect->x, rect->y,
 455                             rect->width - 1,
 456                             rect->height - 1);
 457         g_object_unref (gc);
 458
 459         gdk_color_free (fill_color_gdk);
 460 }
 461
 462 static void
 463 highlight_find_results (EvView *view)
 464 {
 465         EvDocumentFind *find;
 466         int i, results = 0;
 467
 468         g_return_if_fail (EV_IS_DOCUMENT_FIND (view->document));
 469
 470         find = EV_DOCUMENT_FIND (view->document);
 471
 472 #if 0
 473         g_mutex_lock (EV_DOC_MUTEX);
 474         results = ev_document_find_get_n_results (find);
 475         g_mutex_unlock (EV_DOC_MUTEX);
 476 #endif
 477
 478         for (i = 0; i < results; i++) {
 479                 GdkRectangle rectangle;
 480                 guchar alpha;
 481
 482                 alpha = (i == view->find_result) ? 0x90 : 0x20;
 483                 g_mutex_lock (EV_DOC_MUTEX);
 484                 ev_document_find_get_result (find, i, &rectangle);
 485                 g_mutex_unlock (EV_DOC_MUTEX);
 486                 draw_rubberband (GTK_WIDGET (view), view->bin_window,
 487                                  &rectangle, alpha);
 488         }
 489 }
 490
 491
 492 static void
 493 expose_bin_window (GtkWidget      *widget,
 494                    GdkEventExpose *event)
 495 {
 496         EvView *view = EV_VIEW (widget);
 497         GtkBorder border;
 498         gint width, height;
 499         GdkRectangle area;
 500         int x_offset, y_offset;
 501         GdkPixbuf *scaled_image;
 502         GdkPixbuf *current_pixbuf;
 503
 504         if (view->document == NULL)
 505                 return;
 506
 507         ev_view_get_offsets (view, &x_offset, &y_offset);
 508         ev_page_cache_get_size (view->page_cache,
 509                                 view->current_page,
 510                                 view->scale,
 511                                 &width, &height);
 512
 513         ev_document_misc_get_page_border_size (width, height, &border);
 514
 515         /* Paint the frame */
 516         area.x = x_offset;
 517         area.y = y_offset;
 518         area.width = width + border.left + border.right;
 519         area.height = height + border.top + border.bottom;
 520         ev_document_misc_paint_one_page (view->bin_window, widget, &area, &border);
 521
 522         /* Render the document itself */
 523         LOG ("Render area %d %d %d %d - Offset %d %d",
 524              event->area.x, event->area.y,
 525              event->area.width, event->area.height,
 526              x_offset, y_offset);
 527
 528         current_pixbuf = ev_pixbuf_cache_get_pixbuf (view->pixbuf_cache, view->current_page);
 529
 530         if (current_pixbuf == NULL)
 531                 scaled_image = NULL;
 532         else if (width == gdk_pixbuf_get_width (current_pixbuf) &&
 533                  height == gdk_pixbuf_get_height (current_pixbuf))
 534                 scaled_image = g_object_ref (current_pixbuf);
 535         else
 536                 scaled_image = gdk_pixbuf_scale_simple (current_pixbuf,
 537                                                         width, height,
 538                                                         GDK_INTERP_NEAREST);
 539         if (scaled_image) {
 540                 gdk_draw_pixbuf (view->bin_window,
 541                                  GTK_WIDGET (view)->style->fg_gc[GTK_STATE_NORMAL],
 542                                  scaled_image,
 543                                  0, 0,
 544                                  area.x + border.left,
 545                                  area.y + border.top,
 546                                  width, height,
 547                                  GDK_RGB_DITHER_NORMAL,
 548                                  0, 0);
 549                 g_object_unref (scaled_image);
 550         }
 551
 552         if (EV_IS_DOCUMENT_FIND (view->document)) {
 553                 highlight_find_results (view);
 554         }
 555
 556         if (view->has_selection) {
 557                 GdkRectangle rubberband;
 558
 559                 doc_rect_to_view_rect (view, &view->selection, &rubberband);
 560                 if (rubberband.width > 0 && rubberband.height > 0) {
 561                         draw_rubberband (widget, view->bin_window,
 562                                          &rubberband, 0x40);
 563                 }
 564         }
 565 }
 566
 567 static gboolean
 568 ev_view_expose_event (GtkWidget      *widget,
 569                       GdkEventExpose *event)
 570 {
 571         EvView *view = EV_VIEW (widget);
 572
 573         if (event->window == view->bin_window)
 574                 expose_bin_window (widget, event);
 575         else
 576                 return GTK_WIDGET_CLASS (ev_view_parent_class)->expose_event (widget, event);
 577
 578         return FALSE;
 579 }
 580
 581 void
 582 ev_view_select_all (EvView *ev_view)
 583 {
 584         GtkWidget *widget = GTK_WIDGET (ev_view);
 585         GdkRectangle selection;
 586         int width, height;
 587         int x_offset, y_offset;
 588         GtkBorder border;
 589
 590         g_return_if_fail (EV_IS_VIEW (ev_view));
 591
 592
 593         ev_view_get_offsets (ev_view, &x_offset, &y_offset);
 594         ev_page_cache_get_size (ev_view->page_cache,
 595                                 ev_view->current_page,
 596                                 ev_view->scale,
 597                                 &width, &height);
 598         ev_document_misc_get_page_border_size (width, height, &border);
 599
 600         ev_view->has_selection = TRUE;
 601         selection.x = x_offset + border.left;
 602         selection.y = y_offset + border.top;
 603         selection.width = width;
 604         selection.height = height;
 605         view_rect_to_doc_rect (ev_view, &selection, &ev_view->selection);
 606
 607         gtk_widget_queue_draw (widget);
 608 }
 609
 610 void
 611 ev_view_copy (EvView *ev_view)
 612 {
 613         GtkClipboard *clipboard;
 614         GdkRectangle selection;
 615         char *text;
 616
 617         doc_rect_to_view_rect (ev_view, &ev_view->selection, &selection);
 618         g_mutex_lock (EV_DOC_MUTEX);
 619         text = ev_document_get_text (ev_view->document, &selection);
 620         g_mutex_unlock (EV_DOC_MUTEX);
 621
 622         clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view),
 623                                               GDK_SELECTION_CLIPBOARD);
 624         gtk_clipboard_set_text (clipboard, text, -1);
 625         g_free (text);
 626 }
 627
 628 static void
 629 ev_view_primary_get_cb (GtkClipboard     *clipboard,
 630                         GtkSelectionData *selection_data,
 631                         guint             info,
 632                         gpointer          data)
 633 {
 634         EvView *ev_view = EV_VIEW (data);
 635         GdkRectangle selection;
 636         char *text;
 637
 638         doc_rect_to_view_rect (ev_view, &ev_view->selection, &selection);
 639         g_mutex_lock (EV_DOC_MUTEX);
 640         text = ev_document_get_text (ev_view->document, &selection);
 641         g_mutex_unlock (EV_DOC_MUTEX);
 642         gtk_selection_data_set_text (selection_data, text, -1);
 643 }
 644
 645 static void
 646 ev_view_primary_clear_cb (GtkClipboard *clipboard,
 647                           gpointer      data)
 648 {
 649         EvView *ev_view = EV_VIEW (data);
 650
 651         ev_view->has_selection = FALSE;
 652 }
 653
 654 static void
 655 ev_view_update_primary_selection (EvView *ev_view)
 656 {
 657         GtkClipboard *clipboard;
 658
 659         clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view),
 660                                               GDK_SELECTION_PRIMARY);
 661
 662         if (ev_view->has_selection) {
 663                 if (!gtk_clipboard_set_with_owner (clipboard,
 664                                                    targets,
 665                                                    G_N_ELEMENTS (targets),
 666                                                    ev_view_primary_get_cb,
 667                                                    ev_view_primary_clear_cb,
 668                                                    G_OBJECT (ev_view)))
 669                         ev_view_primary_clear_cb (clipboard, ev_view);
 670         } else {
 671                 if (gtk_clipboard_get_owner (clipboard) == G_OBJECT (ev_view))
 672                         gtk_clipboard_clear (clipboard);
 673         }
 674 }
 675
 676 static gboolean
 677 ev_view_button_press_event (GtkWidget      *widget,
 678                             GdkEventButton *event)
 679 {
 680         EvView *view = EV_VIEW (widget);
 681
 682         if (!GTK_WIDGET_HAS_FOCUS (widget)) {
 683                 gtk_widget_grab_focus (widget);
 684         }
 685
 686         view->pressed_button = event->button;
 687
 688         switch (event->button) {
 689                 case 1:
 690                         if (view->has_selection) {
 691                                 view->has_selection = FALSE;
 692                                 gtk_widget_queue_draw (widget);
 693                         }
 694
 695                         view->selection_start.x = event->x;
 696                         view->selection_start.y = event->y;
 697                         break;
 698         }
 699
 700         return TRUE;
 701 }
 702
 703 static char *
 704 status_message_from_link (EvView *view, EvLink *link)
 705 {
 706         EvLinkType type;
 707         char *msg = NULL;
 708         char *page_label;
 709
 710         type = ev_link_get_link_type (link);
 711
 712         switch (type) {
 713                 case EV_LINK_TYPE_TITLE:
 714                         if (ev_link_get_title (link))
 715                                 msg = g_strdup (ev_link_get_title (link));
 716                         break;
 717                 case EV_LINK_TYPE_PAGE:
 718                         page_label = ev_page_cache_get_page_label (view->page_cache, ev_link_get_page (link));
 719                         msg = g_strdup_printf (_("Go to page %s"), page_label);
 720                         g_free (page_label);
 721                         break;
 722                 case EV_LINK_TYPE_EXTERNAL_URI:
 723                         msg = g_strdup (ev_link_get_uri (link));
 724                         break;
 725                 default:
 726                         break;
 727         }
 728
 729         return msg;
 730 }
 731
 732 static void
 733 ev_view_set_status (EvView *view, const char *message)
 734 {
 735         g_return_if_fail (EV_IS_VIEW (view));
 736
 737         if (message != view->status) {
 738                 g_free (view->status);
 739                 view->status = g_strdup (message);
 740                 g_object_notify (G_OBJECT (view), "status");
 741         }
 742 }
 743
 744 static void
 745 ev_view_set_find_status (EvView *view, const char *message)
 746 {
 747         g_return_if_fail (EV_IS_VIEW (view));
 748
 749         g_free (view->find_status);
 750         view->find_status = g_strdup (message);
 751         g_object_notify (G_OBJECT (view), "find-status");
 752 }
 753
 754 static GdkCursor *
 755 ev_view_create_invisible_cursor(void)
 756 {
 757        GdkBitmap *empty;
 758        GdkColor black = { 0, 0, 0, 0 };
 759        static char bits[] = { 0x00 };
 760
 761        empty = gdk_bitmap_create_from_data (NULL, bits, 1, 1);
 762
 763        return gdk_cursor_new_from_pixmap (empty, empty, &black, &black, 0, 0);
 764 }
 765
 766 static void
 767 ev_view_set_cursor (EvView *view, EvViewCursor new_cursor)
 768 {
 769         GdkCursor *cursor = NULL;
 770         GdkDisplay *display;
 771         GtkWidget *widget;
 772
 773         if (view->cursor == new_cursor) {
 774                 return;
 775         }
 776
 777         widget = gtk_widget_get_toplevel (GTK_WIDGET (view));
 778         display = gtk_widget_get_display (widget);
 779         view->cursor = new_cursor;
 780
 781         switch (new_cursor) {
 782                 case EV_VIEW_CURSOR_NORMAL:
 783                         gdk_window_set_cursor (widget->window, NULL);
 784                         break;
 785                 case EV_VIEW_CURSOR_LINK:
 786                         cursor = gdk_cursor_new_for_display (display, GDK_HAND2);
 787                         break;
 788                 case EV_VIEW_CURSOR_WAIT:
 789                         cursor = gdk_cursor_new_for_display (display, GDK_WATCH);
 790                         break;
 791                 case EV_VIEW_CURSOR_HIDDEN:
 792                         cursor = ev_view_create_invisible_cursor ();
 793                         break;
 794
 795         }
 796
 797         if (cursor) {
 798                 gdk_window_set_cursor (widget->window, cursor);
 799                 gdk_cursor_unref (cursor);
 800                 gdk_flush();
 801         }
 802 }
 803
 804
 805 static void
 806 find_page_at_location (EvView  *view,
 807                        gdouble  x,
 808                        gdouble  y,
 809                        gint    *page,
 810                        gint    *x_offset,
 811                        gint    *y_offset)
 812 {
 813         GtkBorder border;
 814         gint width, height;
 815
 816         ev_page_cache_get_size (view->page_cache,
 817                                 view->current_page,
 818                                 view->scale,
 819                                 &width, &height);
 820         ev_document_misc_get_page_border_size (width, height, &border);
 821
 822         x -= (border.left + view->spacing);
 823         y -= (border.top + view->spacing);
 824
 825         if ((x < 0) || (y < 0) ||
 826             (x >= width) || (y >= height)) {
 827                 *page = -1;
 828                 return;
 829         }
 830         *page = view->current_page;
 831         *x_offset = (gint) x;
 832         *y_offset = (gint) y;
 833 }
 834
 835 static EvLink *
 836 get_link_at_location (EvView  *view,
 837                       gdouble  x,
 838                       gdouble  y)
 839 {
 840         gint page;
 841         gint x_offset, y_offset;
 842         GList *link_mapping;
 843
 844         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
 845         if (page == -1)
 846                 return NULL;
 847
 848         link_mapping = ev_pixbuf_cache_get_link_mapping (view->pixbuf_cache, page);
 849
 850         return ev_link_mapping_find (link_mapping, x_offset /view->scale, y_offset /view->scale);
 851 }
 852
 853
 854 static gboolean
 855 ev_view_motion_notify_event (GtkWidget      *widget,
 856                              GdkEventMotion *event)
 857 {
 858         EvView *view = EV_VIEW (widget);
 859
 860         if (view->pressed_button > 0) {
 861                 GdkRectangle selection;
 862
 863                 view->has_selection = TRUE;
 864                 selection.x = MIN (view->selection_start.x, event->x);
 865                 selection.y = MIN (view->selection_start.y, event->y);
 866                 selection.width = ABS (view->selection_start.x - event->x) + 1;
 867                 selection.height = ABS (view->selection_start.y - event->y) + 1;
 868                 view_rect_to_doc_rect (view, &selection, &view->selection);
 869
 870                 gtk_widget_queue_draw (widget);
 871         } else if (view->document) {
 872                 EvLink *link;
 873
 874                 link = get_link_at_location (view, event->x, event->y);
 875                 if (link) {
 876                         char *msg;
 877
 878                         msg = status_message_from_link (view, link);
 879                         ev_view_set_status (view, msg);
 880                         ev_view_set_cursor (view, EV_VIEW_CURSOR_LINK);
 881                         g_free (msg);
 882                 } else {
 883                         ev_view_set_status (view, NULL);
 884                         if (view->cursor == EV_VIEW_CURSOR_LINK) {
 885                                 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
 886                         }
 887                 }
 888         }
 889
 890         return TRUE;
 891 }
 892
 893 static gboolean
 894 ev_view_button_release_event (GtkWidget      *widget,
 895                               GdkEventButton *event)
 896 {
 897         EvView *view = EV_VIEW (widget);
 898
 899         view->pressed_button = -1;
 900
 901         if (view->has_selection) {
 902                 ev_view_update_primary_selection (view);
 903         } else if (view->document) {
 904                 EvLink *link;
 905
 906                 link = get_link_at_location (view, event->x, event->y);
 907                 if (link) {
 908                         ev_view_go_to_link (view, link);
 909                 }
 910         }
 911
 912         return FALSE;
 913 }
 914
 915 static void
 916 on_adjustment_value_changed (GtkAdjustment  *adjustment,
 917                              EvView *view)
 918 {
 919         view_update_adjustments (view);
 920 }
 921
 922 static void
 923 set_scroll_adjustment (EvView *view,
 924                        GtkOrientation  orientation,
 925                        GtkAdjustment  *adjustment)
 926 {
 927         GtkAdjustment **to_set;
 928
 929         if (orientation == GTK_ORIENTATION_HORIZONTAL)
 930                 to_set = &view->hadjustment;
 931         else
 932                 to_set = &view->vadjustment;
 933
 934         if (*to_set != adjustment) {
 935                 if (*to_set) {
 936                         g_signal_handlers_disconnect_by_func (*to_set,
 937                                                               (gpointer) on_adjustment_value_changed,
 938                                                               view);
 939                         g_object_unref (*to_set);
 940                 }
 941
 942                 *to_set = adjustment;
 943                 view_set_adjustment_values (view, orientation);
 944
 945                 if (*to_set) {
 946                         g_object_ref (*to_set);
 947                         g_signal_connect (*to_set, "value_changed",
 948                                           G_CALLBACK (on_adjustment_value_changed), view);
 949                 }
 950         }
 951 }
 952
 953 static void
 954 ev_view_set_scroll_adjustments (EvView *view,
 955                                 GtkAdjustment  *hadjustment,
 956                                 GtkAdjustment  *vadjustment)
 957 {
 958         set_scroll_adjustment (view, GTK_ORIENTATION_HORIZONTAL, hadjustment);
 959         set_scroll_adjustment (view, GTK_ORIENTATION_VERTICAL, vadjustment);
 960
 961         view_update_adjustments (view);
 962 }
 963
 964 static void
 965 add_scroll_binding (GtkBindingSet  *binding_set,
 966                     guint           keyval,
 967                     GtkScrollType   scroll,
 968                     gboolean        horizontal)
 969 {
 970   guint keypad_keyval = keyval - GDK_Left + GDK_KP_Left;
 971
 972   gtk_binding_entry_add_signal (binding_set, keyval, 0,
 973                                 "scroll_view", 2,
 974                                 GTK_TYPE_SCROLL_TYPE, scroll,
 975                                 G_TYPE_BOOLEAN, horizontal);
 976   gtk_binding_entry_add_signal (binding_set, keypad_keyval, 0,
 977                                 "scroll_view", 2,
 978                                 GTK_TYPE_SCROLL_TYPE, scroll,
 979                                 G_TYPE_BOOLEAN, horizontal);
 980 }
 981
 982 static void
 983 ev_view_scroll_view (EvView *view,
 984                      GtkScrollType scroll,
 985                      gboolean horizontal)
 986 {
 987         if (scroll == GTK_SCROLL_PAGE_BACKWARD) {
 988                 ev_page_cache_prev_page (view->page_cache);
 989         } else if (scroll == GTK_SCROLL_PAGE_FORWARD) {
 990                 ev_page_cache_next_page (view->page_cache);
 991         } else {
 992                 GtkAdjustment *adjustment;
 993                 double value;
 994
 995                 if (horizontal) {
 996                         adjustment = view->hadjustment;
 997                 } else {
 998                         adjustment = view->vadjustment;
 999                 }
1000
1001                 value = adjustment->value;
1002
1003                 switch (scroll) {
1004                         case GTK_SCROLL_STEP_BACKWARD:
1005                                 value -= adjustment->step_increment;
1006                                 break;
1007                         case GTK_SCROLL_STEP_FORWARD:
1008                                 value += adjustment->step_increment;
1009                                 break;
1010                         default:
1011                                 break;
1012                 }
1013
1014                 value = CLAMP (value, adjustment->lower,
1015                                adjustment->upper - adjustment->page_size);
1016
1017                 gtk_adjustment_set_value (adjustment, value);
1018         }
1019 }
1020
1021 static void
1022 ev_view_set_property (GObject *object,
1023                       guint prop_id,
1024                       const GValue *value,
1025                       GParamSpec *pspec)
1026 {
1027         switch (prop_id)
1028         {
1029                 /* Read only */
1030                 case PROP_STATUS:
1031                 case PROP_FIND_STATUS:
1032                         break;
1033         }
1034 }
1035
1036 static void
1037 ev_view_get_property (GObject *object,
1038                       guint prop_id,
1039                       GValue *value,
1040                       GParamSpec *pspec)
1041 {
1042         EvView *view = EV_VIEW (object);
1043
1044         switch (prop_id)
1045         {
1046                 case PROP_STATUS:
1047                         g_value_set_string (value, view->status);
1048                         break;
1049                 case PROP_FIND_STATUS:
1050                         g_value_set_string (value, view->status);
1051                         break;
1052         }
1053 }
1054
1055 static void
1056 ev_view_class_init (EvViewClass *class)
1057 {
1058         GObjectClass *object_class = G_OBJECT_CLASS (class);
1059         GtkObjectClass *gtk_object_class = GTK_OBJECT_CLASS (class);
1060         GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
1061         GtkBindingSet *binding_set;
1062
1063         object_class->finalize = ev_view_finalize;
1064         object_class->set_property = ev_view_set_property;
1065         object_class->get_property = ev_view_get_property;
1066
1067         widget_class->expose_event = ev_view_expose_event;
1068         widget_class->button_press_event = ev_view_button_press_event;
1069         widget_class->motion_notify_event = ev_view_motion_notify_event;
1070         widget_class->button_release_event = ev_view_button_release_event;
1071         widget_class->size_request = ev_view_size_request;
1072         widget_class->size_allocate = ev_view_size_allocate;
1073         widget_class->realize = ev_view_realize;
1074         widget_class->unrealize = ev_view_unrealize;
1075         gtk_object_class->destroy = ev_view_destroy;
1076
1077         class->set_scroll_adjustments = ev_view_set_scroll_adjustments;
1078         class->scroll_view = ev_view_scroll_view;
1079
1080         widget_class->set_scroll_adjustments_signal =  g_signal_new ("set-scroll-adjustments",
1081                                                                      G_OBJECT_CLASS_TYPE (object_class),
1082                                                                      G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1083                                                                      G_STRUCT_OFFSET (EvViewClass, set_scroll_adjustments),
1084                                                                      NULL, NULL,
1085                                                                      ev_marshal_VOID__OBJECT_OBJECT,
1086                                                                      G_TYPE_NONE, 2,
1087                                                                      GTK_TYPE_ADJUSTMENT,
1088                                                                      GTK_TYPE_ADJUSTMENT);
1089
1090         g_signal_new ("scroll_view",
1091                       G_TYPE_FROM_CLASS (object_class),
1092                       G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1093                       G_STRUCT_OFFSET (EvViewClass, scroll_view),
1094                       NULL, NULL,
1095                       ev_marshal_VOID__ENUM_BOOLEAN,
1096                       G_TYPE_NONE, 2,
1097                       GTK_TYPE_SCROLL_TYPE,
1098                       G_TYPE_BOOLEAN);
1099
1100         g_object_class_install_property (object_class,
1101                                          PROP_STATUS,
1102                                          g_param_spec_string ("status",
1103                                                               "Status Message",
1104                                                               "The status message",
1105                                                               NULL,
1106                                                               G_PARAM_READABLE));
1107
1108         g_object_class_install_property (object_class,
1109                                          PROP_STATUS,
1110                                          g_param_spec_string ("find-status",
1111                                                               "Find Status Message",
1112                                                               "The find status message",
1113                                                               NULL,
1114                                                               G_PARAM_READABLE));
1115
1116         binding_set = gtk_binding_set_by_class (class);
1117
1118         add_scroll_binding (binding_set, GDK_Left,  GTK_SCROLL_STEP_BACKWARD, TRUE);
1119         add_scroll_binding (binding_set, GDK_Right, GTK_SCROLL_STEP_FORWARD,  TRUE);
1120         add_scroll_binding (binding_set, GDK_Up,    GTK_SCROLL_STEP_BACKWARD, FALSE);
1121         add_scroll_binding (binding_set, GDK_Down,  GTK_SCROLL_STEP_FORWARD,  FALSE);
1122
1123         add_scroll_binding (binding_set, GDK_Page_Up,   GTK_SCROLL_PAGE_BACKWARD, FALSE);
1124         add_scroll_binding (binding_set, GDK_Page_Down, GTK_SCROLL_PAGE_FORWARD,  FALSE);
1125 }
1126
1127 static void
1128 ev_view_init (EvView *view)
1129 {
1130         GTK_WIDGET_SET_FLAGS (view, GTK_CAN_FOCUS);
1131
1132         view->spacing = 10;
1133         view->scale = 1.0;
1134         view->current_page = 0;
1135         view->pressed_button = -1;
1136         view->cursor = EV_VIEW_CURSOR_NORMAL;
1137 }
1138
1139 static void
1140 update_find_status_message (EvView *view)
1141 {
1142         char *message;
1143
1144 //      g_mutex_lock (EV_DOC_MUTEX);
1145         if (ev_document_get_page (view->document) == view->find_page) {
1146                 int results;
1147
1148 //              g_mutex_lock (EV_DOC_MUTEX);
1149                 results = ev_document_find_get_n_results
1150                                 (EV_DOCUMENT_FIND (view->document));
1151 //              g_mutex_unlock (EV_DOC_MUTEX);
1152                 /* TRANS: Sometimes this could be better translated as
1153                    "%d hit(s) on this page".  Therefore this string
1154                    contains plural cases. */
1155                 message = g_strdup_printf (ngettext ("%d found on this page",
1156                                                      "%d found on this page",
1157                                                      results),
1158                                            results);
1159         } else {
1160                 double percent;
1161
1162                 g_mutex_lock (EV_DOC_MUTEX);
1163                 percent = ev_document_find_get_progress
1164                                 (EV_DOCUMENT_FIND (view->document));
1165                 g_mutex_unlock (EV_DOC_MUTEX);
1166                 if (percent >= (1.0 - 1e-10)) {
1167                         message = g_strdup (_("Not found"));
1168                 } else {
1169                         message = g_strdup_printf (_("%3d%% remaining to search"),
1170                                                    (int) ((1.0 - percent) * 100));
1171                 }
1172
1173         }
1174 //      g_mutex_unlock (EV_DOC_MUTEX);
1175
1176         ev_view_set_find_status (view, message);
1177 //      g_free (message);
1178 }
1179
1180 #define MARGIN 5
1181
1182 static void
1183 ensure_rectangle_is_visible (EvView *view, GdkRectangle *rect)
1184 {
1185         GtkWidget *widget = GTK_WIDGET (view);
1186         GtkAdjustment *adjustment;
1187         int value;
1188
1189         adjustment = view->vadjustment;
1190
1191         if (rect->y < adjustment->value) {
1192                 value = MAX (adjustment->lower, rect->y - MARGIN);
1193                 gtk_adjustment_set_value (view->vadjustment, value);
1194         } else if (rect->y + rect->height >
1195                    adjustment->value + widget->allocation.height) {
1196                 value = MIN (adjustment->upper, rect->y + rect->height -
1197                              widget->allocation.height + MARGIN);
1198                 gtk_adjustment_set_value (view->vadjustment, value);
1199         }
1200
1201         adjustment = view->hadjustment;
1202
1203         if (rect->x < adjustment->value) {
1204                 value = MAX (adjustment->lower, rect->x - MARGIN);
1205                 gtk_adjustment_set_value (view->hadjustment, value);
1206         } else if (rect->x + rect->height >
1207                    adjustment->value + widget->allocation.width) {
1208                 value = MIN (adjustment->upper, rect->x + rect->width -
1209                              widget->allocation.width + MARGIN);
1210                 gtk_adjustment_set_value (view->hadjustment, value);
1211         }
1212 }
1213
1214 static void
1215 jump_to_find_result (EvView *view)
1216 {
1217         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
1218         GdkRectangle rect;
1219         int n_results;
1220
1221         g_mutex_lock (EV_DOC_MUTEX);
1222         n_results = ev_document_find_get_n_results (find);
1223         g_mutex_unlock (EV_DOC_MUTEX);
1224
1225         if (n_results > view->find_result) {
1226                 g_mutex_lock (EV_DOC_MUTEX);
1227                 ev_document_find_get_result
1228                         (find, view->find_result, &rect);
1229                 g_mutex_unlock (EV_DOC_MUTEX);
1230
1231                 ensure_rectangle_is_visible (view, &rect);
1232         }
1233 }
1234
1235 static void
1236 jump_to_find_page (EvView *view)
1237 {
1238         int n_pages, i;
1239
1240         n_pages = ev_page_cache_get_n_pages (view->page_cache);
1241
1242         for (i = 0; i <= n_pages; i++) {
1243                 int has_results;
1244                 int page;
1245
1246                 page = i + view->find_page;
1247                 if (page > n_pages) {
1248                         page = page - n_pages;
1249                 }
1250
1251                 g_mutex_lock (EV_DOC_MUTEX);
1252                 has_results = ev_document_find_page_has_results
1253                                 (EV_DOCUMENT_FIND (view->document), page);
1254                 if (has_results == -1) {
1255                         view->find_page = page;
1256                         break;
1257                 } else if (has_results == 1) {
1258                         ev_page_cache_set_current_page (view->page_cache, page);
1259                         jump_to_find_result (view);
1260                         break;
1261                 }
1262         }
1263 }
1264
1265 static void
1266 find_changed_cb (EvDocument *document, int page, EvView *view)
1267 {
1268         jump_to_find_page (view);
1269         jump_to_find_result (view);
1270         update_find_status_message (view);
1271
1272 #if 0
1273         /* FIXME: */
1274         if (ev_document_get_page (document) == page) {
1275                 gtk_widget_queue_draw (GTK_WIDGET (view));
1276         }
1277 #endif
1278 }
1279 /*** Public API ***/
1280
1281 GtkWidget*
1282 ev_view_new (void)
1283 {
1284         return g_object_new (EV_TYPE_VIEW, NULL);
1285 }
1286
1287 static void
1288 job_finished_cb (EvPixbufCache *pixbuf_cache,
1289                  EvView        *view)
1290 {
1291         gtk_widget_queue_draw (GTK_WIDGET (view));
1292 }
1293
1294
1295 static void
1296 page_changed_cb (EvPageCache *page_cache,
1297                  int          new_page,
1298                  EvView      *view)
1299 {
1300         int old_page = view->current_page;
1301         int old_width, old_height;
1302         int new_width, new_height;
1303
1304         if (old_page == new_page)
1305                 return;
1306
1307         ev_page_cache_get_size (page_cache,
1308                                 old_page,
1309                                 view->scale,
1310                                 &old_width, &old_height);
1311         ev_page_cache_get_size (page_cache,
1312                                 new_page,
1313                                 view->scale,
1314                                 &new_width, &new_height);
1315
1316         if (view->cursor != EV_VIEW_CURSOR_HIDDEN) {
1317                 //ev_view_set_cursor (view, EV_VIEW_CURSOR_WAIT);
1318         }
1319
1320         view->current_page = new_page;
1321         view->has_selection = FALSE;
1322
1323         ev_pixbuf_cache_set_page_range (view->pixbuf_cache,
1324                                         view->current_page,
1325                                         view->current_page,
1326                                         view->scale);
1327
1328         if (new_width != old_width || new_height != old_height)
1329                 gtk_widget_queue_resize (GTK_WIDGET (view));
1330         else
1331                 gtk_widget_queue_draw (GTK_WIDGET (view));
1332
1333         gtk_adjustment_set_value (view->vadjustment,
1334                                   view->vadjustment->lower);
1335
1336         if (EV_IS_DOCUMENT_FIND (view->document)) {
1337                 view->find_page = new_page;
1338                 view->find_result = 0;
1339                 update_find_status_message (view);
1340         }
1341 }
1342
1343 void
1344 ev_view_set_document (EvView     *view,
1345                       EvDocument *document)
1346 {
1347         g_return_if_fail (EV_IS_VIEW (view));
1348
1349         if (document != view->document) {
1350                 if (view->document) {
1351                         g_signal_handlers_disconnect_by_func (view->document,
1352                                                               find_changed_cb,
1353                                                               view);
1354                         g_object_unref (view->document);
1355                         view->page_cache = NULL;
1356
1357                 }
1358
1359                 view->document = document;
1360                 view->find_page = 1;
1361                 view->find_result = 0;
1362
1363                 if (view->document) {
1364                         g_object_ref (view->document);
1365                         if (EV_IS_DOCUMENT_FIND (view->document)) {
1366                                 g_signal_connect (view->document,
1367                                                   "find_changed",
1368                                                   G_CALLBACK (find_changed_cb),
1369                                                   view);
1370                         }
1371                         view->page_cache = ev_document_get_page_cache (view->document);
1372                         g_signal_connect (view->page_cache, "page-changed", G_CALLBACK (page_changed_cb), view);
1373                         view->pixbuf_cache = ev_pixbuf_cache_new (view->document);
1374                         g_signal_connect (view->pixbuf_cache, "job-finished", G_CALLBACK (job_finished_cb), view);
1375                 }
1376
1377                 gtk_widget_queue_resize (GTK_WIDGET (view));
1378         }
1379 }
1380
1381 static void
1382 go_to_link (EvView *view, EvLink *link)
1383 {
1384         EvLinkType type;
1385         const char *uri;
1386         int page;
1387
1388         type = ev_link_get_link_type (link);
1389
1390         switch (type) {
1391                 case EV_LINK_TYPE_TITLE:
1392                         break;
1393                 case EV_LINK_TYPE_PAGE:
1394                         page = ev_link_get_page (link);
1395                         ev_page_cache_set_current_page (view->page_cache, page);
1396                         break;
1397                 case EV_LINK_TYPE_EXTERNAL_URI:
1398                         uri = ev_link_get_uri (link);
1399                         gnome_vfs_url_show (uri);
1400                         break;
1401         }
1402 }
1403
1404 void
1405 ev_view_go_to_link (EvView *view, EvLink *link)
1406 {
1407         go_to_link (view, link);
1408 }
1409
1410 static void
1411 ev_view_zoom (EvView   *view,
1412               double    factor,
1413               gboolean  relative)
1414 {
1415         double scale;
1416
1417         if (relative)
1418                 scale = view->scale * factor;
1419         else
1420                 scale = factor;
1421
1422         scale = CLAMP (scale, MIN_SCALE, MAX_SCALE);
1423
1424         view->scale = scale;
1425         gtk_widget_queue_resize (GTK_WIDGET (view));
1426 }
1427
1428 void
1429 ev_view_zoom_in (EvView *view)
1430 {
1431         view->width = view->height = -1;
1432         ev_view_zoom (view, ZOOM_IN_FACTOR, TRUE);
1433 }
1434
1435 void
1436 ev_view_zoom_out (EvView *view)
1437 {
1438         view->width = view->height = -1;
1439         ev_view_zoom (view, ZOOM_OUT_FACTOR, TRUE);
1440 }
1441
1442 static double
1443 size_to_zoom_factor (EvView *view, int width, int height)
1444 {
1445         int doc_width, doc_height;
1446         double scale, scale_w, scale_h;
1447         GtkBorder border;
1448
1449         doc_width = doc_height = 0;
1450         scale = scale_w = scale_h = 1.0;
1451         ev_page_cache_get_size (view->page_cache,
1452                                 view->current_page,
1453                                 view->scale,
1454                                 &doc_width,
1455                                 &doc_height);
1456
1457         /* FIXME: The border size isn't constant.  Ugh.  Still, if we have extra
1458          * space, we just cut it from the border */
1459         ev_document_misc_get_page_border_size (doc_width, doc_height, &border);
1460
1461         if (doc_width == 0 && doc_height == 0) {
1462                 return 0;
1463         }
1464
1465         if (width >= 0) {
1466                 int target_width;
1467
1468                 target_width = width - (view->spacing * 2 + border.left + border.right);
1469                 scale = scale_w = (double)target_width * view->scale / doc_width;
1470         }
1471
1472         if (height >= 0) {
1473                 int target_height;
1474
1475                 target_height = height - (view->spacing * 2 + border.top + border.bottom);
1476                 scale = scale_h = (double)target_height * view->scale / doc_height;
1477         }
1478
1479         if (width >= 0 && height >= 0) {
1480                 scale = (scale_w < scale_h) ? scale_w : scale_h;
1481         }
1482
1483         return scale;
1484 }
1485
1486 void
1487 ev_view_set_size (EvView     *view,
1488                   int         width,
1489                   int         height)
1490 {
1491         double factor;
1492
1493         if (!view->document)
1494                 return;
1495
1496         if (view->width != width ||
1497             view->height != height) {
1498                 view->width = width;
1499                 view->height = height;
1500                 factor = size_to_zoom_factor (view, width, height);
1501                 ev_view_zoom (view, factor, FALSE);
1502                 gtk_widget_queue_resize (GTK_WIDGET (view));
1503         }
1504 }
1505
1506 const char *
1507 ev_view_get_status (EvView *view)
1508 {
1509         g_return_val_if_fail (EV_IS_VIEW (view), NULL);
1510
1511         return view->status;
1512 }
1513
1514 const char *
1515 ev_view_get_find_status (EvView *view)
1516 {
1517         g_return_val_if_fail (EV_IS_VIEW (view), NULL);
1518
1519         return view->find_status;
1520 }
1521
1522 void
1523 ev_view_find_next (EvView *view)
1524 {
1525         EvPageCache *page_cache;
1526         int n_results, n_pages;
1527         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
1528
1529         page_cache = ev_document_get_page_cache (view->document);
1530         g_mutex_lock (EV_DOC_MUTEX);
1531         n_results = ev_document_find_get_n_results (find);
1532         g_mutex_unlock (EV_DOC_MUTEX);
1533
1534         n_pages = ev_page_cache_get_n_pages (page_cache);
1535
1536         view->find_result++;
1537
1538         if (view->find_result >= n_results) {
1539                 view->find_result = 0;
1540                 view->find_page++;
1541
1542                 if (view->find_page > n_pages) {
1543                         view->find_page = 1;
1544                 }
1545
1546                 jump_to_find_page (view);
1547         } else {
1548                 jump_to_find_result (view);
1549                 gtk_widget_queue_draw (GTK_WIDGET (view));
1550         }
1551 }
1552
1553 void
1554 ev_view_find_previous (EvView *view)
1555 {
1556         int n_results, n_pages;
1557         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
1558         EvPageCache *page_cache;
1559
1560         page_cache = ev_document_get_page_cache (view->document);
1561
1562         g_mutex_lock (EV_DOC_MUTEX);
1563         n_results = ev_document_find_get_n_results (find);
1564         g_mutex_unlock (EV_DOC_MUTEX);
1565
1566         n_pages = ev_page_cache_get_n_pages (page_cache);
1567
1568         view->find_result--;
1569
1570         if (view->find_result < 0) {
1571                 view->find_result = 0;
1572                 view->find_page--;
1573
1574                 if (view->find_page < 1) {
1575                         view->find_page = n_pages;
1576                 }
1577
1578                 jump_to_find_page (view);
1579         } else {
1580                 jump_to_find_result (view);
1581                 gtk_widget_queue_draw (GTK_WIDGET (view));
1582         }
1583 }
1584 void
1585 ev_view_hide_cursor (EvView *view)
1586 {
1587        ev_view_set_cursor (view, EV_VIEW_CURSOR_HIDDEN);
1588 }
1589
1590 void
1591 ev_view_show_cursor (EvView *view)
1592 {
1593        ev_view_set_cursor (view, EV_VIEW_CURSOR_LINK);
1594 }