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 (EvLink *link)
 705 {
 706         EvLinkType type;
 707         char *msg = NULL;
 708         int page;
 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 = ev_link_get_page (link);
 719                         msg = g_strdup_printf (_("Go to page %d"), page);
 720                         break;
 721                 case EV_LINK_TYPE_EXTERNAL_URI:
 722                         msg = g_strdup (ev_link_get_uri (link));
 723                         break;
 724                 default:
 725                         break;
 726         }
 727
 728         return msg;
 729 }
 730
 731 static void
 732 ev_view_set_status (EvView *view, const char *message)
 733 {
 734         g_return_if_fail (EV_IS_VIEW (view));
 735
 736         if (message != view->status) {
 737                 g_free (view->status);
 738                 view->status = g_strdup (message);
 739                 g_object_notify (G_OBJECT (view), "status");
 740         }
 741 }
 742
 743 static void
 744 ev_view_set_find_status (EvView *view, const char *message)
 745 {
 746         g_return_if_fail (EV_IS_VIEW (view));
 747
 748         g_free (view->find_status);
 749         view->find_status = g_strdup (message);
 750         g_object_notify (G_OBJECT (view), "find-status");
 751 }
 752
 753 static GdkCursor *
 754 ev_view_create_invisible_cursor(void)
 755 {
 756        GdkBitmap *empty;
 757        GdkColor black = { 0, 0, 0, 0 };
 758        static char bits[] = { 0x00 };
 759
 760        empty = gdk_bitmap_create_from_data (NULL, bits, 1, 1);
 761
 762        return gdk_cursor_new_from_pixmap (empty, empty, &black, &black, 0, 0);
 763 }
 764
 765 static void
 766 ev_view_set_cursor (EvView *view, EvViewCursor new_cursor)
 767 {
 768         GdkCursor *cursor = NULL;
 769         GdkDisplay *display;
 770         GtkWidget *widget;
 771
 772         if (view->cursor == new_cursor) {
 773                 return;
 774         }
 775
 776         widget = gtk_widget_get_toplevel (GTK_WIDGET (view));
 777         display = gtk_widget_get_display (widget);
 778         view->cursor = new_cursor;
 779
 780         switch (new_cursor) {
 781                 case EV_VIEW_CURSOR_NORMAL:
 782                         gdk_window_set_cursor (widget->window, NULL);
 783                         break;
 784                 case EV_VIEW_CURSOR_LINK:
 785                         cursor = gdk_cursor_new_for_display (display, GDK_HAND2);
 786                         break;
 787                 case EV_VIEW_CURSOR_WAIT:
 788                         cursor = gdk_cursor_new_for_display (display, GDK_WATCH);
 789                         break;
 790                 case EV_VIEW_CURSOR_HIDDEN:
 791                         cursor = ev_view_create_invisible_cursor ();
 792                         break;
 793
 794         }
 795
 796         if (cursor) {
 797                 gdk_window_set_cursor (widget->window, cursor);
 798                 gdk_cursor_unref (cursor);
 799                 gdk_flush();
 800         }
 801 }
 802
 803
 804 static void
 805 find_page_at_location (EvView  *view,
 806                        gdouble  x,
 807                        gdouble  y,
 808                        gint    *page,
 809                        gint    *x_offset,
 810                        gint    *y_offset)
 811 {
 812         GtkBorder border;
 813         gint width, height;
 814
 815         ev_page_cache_get_size (view->page_cache,
 816                                 view->current_page,
 817                                 view->scale,
 818                                 &width, &height);
 819         ev_document_misc_get_page_border_size (width, height, &border);
 820
 821         x -= (border.left + view->spacing);
 822         y -= (border.top + view->spacing);
 823
 824         if ((x < 0) || (y < 0) ||
 825             (x >= width) || (y >= height)) {
 826                 *page = -1;
 827                 return;
 828         }
 829         *page = view->current_page;
 830         *x_offset = (gint) x;
 831         *y_offset = (gint) y;
 832 }
 833
 834 static EvLink *
 835 get_link_at_location (EvView  *view,
 836                       gdouble  x,
 837                       gdouble  y)
 838 {
 839         gint page;
 840         gint x_offset, y_offset;
 841         GList *link_mapping;
 842
 843         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
 844         if (page == -1)
 845                 return NULL;
 846
 847         link_mapping = ev_pixbuf_cache_get_link_mapping (view->pixbuf_cache, page);
 848
 849         return ev_link_mapping_find (link_mapping, x_offset /view->scale, y_offset /view->scale);
 850 }
 851
 852
 853 static gboolean
 854 ev_view_motion_notify_event (GtkWidget      *widget,
 855                              GdkEventMotion *event)
 856 {
 857         EvView *view = EV_VIEW (widget);
 858
 859         if (view->pressed_button > 0) {
 860                 GdkRectangle selection;
 861
 862                 view->has_selection = TRUE;
 863                 selection.x = MIN (view->selection_start.x, event->x);
 864                 selection.y = MIN (view->selection_start.y, event->y);
 865                 selection.width = ABS (view->selection_start.x - event->x) + 1;
 866                 selection.height = ABS (view->selection_start.y - event->y) + 1;
 867                 view_rect_to_doc_rect (view, &selection, &view->selection);
 868
 869                 gtk_widget_queue_draw (widget);
 870         } else if (view->document) {
 871                 EvLink *link;
 872
 873                 link = get_link_at_location (view, event->x, event->y);
 874                 if (link) {
 875                         char *msg;
 876
 877                         msg = status_message_from_link (link);
 878                         ev_view_set_status (view, msg);
 879                         ev_view_set_cursor (view, EV_VIEW_CURSOR_LINK);
 880                         g_free (msg);
 881                 } else {
 882                         ev_view_set_status (view, NULL);
 883                         if (view->cursor == EV_VIEW_CURSOR_LINK) {
 884                                 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
 885                         }
 886                 }
 887         }
 888
 889         return TRUE;
 890 }
 891
 892 static gboolean
 893 ev_view_button_release_event (GtkWidget      *widget,
 894                               GdkEventButton *event)
 895 {
 896         EvView *view = EV_VIEW (widget);
 897
 898         view->pressed_button = -1;
 899
 900         if (view->has_selection) {
 901                 ev_view_update_primary_selection (view);
 902         } else if (view->document) {
 903                 EvLink *link;
 904
 905                 link = get_link_at_location (view, event->x, event->y);
 906                 if (link) {
 907                         ev_view_go_to_link (view, link);
 908                 }
 909         }
 910
 911         return FALSE;
 912 }
 913
 914 static void
 915 on_adjustment_value_changed (GtkAdjustment  *adjustment,
 916                              EvView *view)
 917 {
 918         view_update_adjustments (view);
 919 }
 920
 921 static void
 922 set_scroll_adjustment (EvView *view,
 923                        GtkOrientation  orientation,
 924                        GtkAdjustment  *adjustment)
 925 {
 926         GtkAdjustment **to_set;
 927
 928         if (orientation == GTK_ORIENTATION_HORIZONTAL)
 929                 to_set = &view->hadjustment;
 930         else
 931                 to_set = &view->vadjustment;
 932
 933         if (*to_set != adjustment) {
 934                 if (*to_set) {
 935                         g_signal_handlers_disconnect_by_func (*to_set,
 936                                                               (gpointer) on_adjustment_value_changed,
 937                                                               view);
 938                         g_object_unref (*to_set);
 939                 }
 940
 941                 *to_set = adjustment;
 942                 view_set_adjustment_values (view, orientation);
 943
 944                 if (*to_set) {
 945                         g_object_ref (*to_set);
 946                         g_signal_connect (*to_set, "value_changed",
 947                                           G_CALLBACK (on_adjustment_value_changed), view);
 948                 }
 949         }
 950 }
 951
 952 static void
 953 ev_view_set_scroll_adjustments (EvView *view,
 954                                 GtkAdjustment  *hadjustment,
 955                                 GtkAdjustment  *vadjustment)
 956 {
 957         set_scroll_adjustment (view, GTK_ORIENTATION_HORIZONTAL, hadjustment);
 958         set_scroll_adjustment (view, GTK_ORIENTATION_VERTICAL, vadjustment);
 959
 960         view_update_adjustments (view);
 961 }
 962
 963 static void
 964 add_scroll_binding (GtkBindingSet  *binding_set,
 965                     guint           keyval,
 966                     GtkScrollType   scroll,
 967                     gboolean        horizontal)
 968 {
 969   guint keypad_keyval = keyval - GDK_Left + GDK_KP_Left;
 970
 971   gtk_binding_entry_add_signal (binding_set, keyval, 0,
 972                                 "scroll_view", 2,
 973                                 GTK_TYPE_SCROLL_TYPE, scroll,
 974                                 G_TYPE_BOOLEAN, horizontal);
 975   gtk_binding_entry_add_signal (binding_set, keypad_keyval, 0,
 976                                 "scroll_view", 2,
 977                                 GTK_TYPE_SCROLL_TYPE, scroll,
 978                                 G_TYPE_BOOLEAN, horizontal);
 979 }
 980
 981 static void
 982 ev_view_scroll_view (EvView *view,
 983                      GtkScrollType scroll,
 984                      gboolean horizontal)
 985 {
 986         if (scroll == GTK_SCROLL_PAGE_BACKWARD) {
 987                 ev_page_cache_prev_page (view->page_cache);
 988         } else if (scroll == GTK_SCROLL_PAGE_FORWARD) {
 989                 ev_page_cache_next_page (view->page_cache);
 990         } else {
 991                 GtkAdjustment *adjustment;
 992                 double value;
 993
 994                 if (horizontal) {
 995                         adjustment = view->hadjustment;
 996                 } else {
 997                         adjustment = view->vadjustment;
 998                 }
 999
1000                 value = adjustment->value;
1001
1002                 switch (scroll) {
1003                         case GTK_SCROLL_STEP_BACKWARD:
1004                                 value -= adjustment->step_increment;
1005                                 break;
1006                         case GTK_SCROLL_STEP_FORWARD:
1007                                 value += adjustment->step_increment;
1008                                 break;
1009                         default:
1010                                 break;
1011                 }
1012
1013                 value = CLAMP (value, adjustment->lower,
1014                                adjustment->upper - adjustment->page_size);
1015
1016                 gtk_adjustment_set_value (adjustment, value);
1017         }
1018 }
1019
1020 static void
1021 ev_view_set_property (GObject *object,
1022                       guint prop_id,
1023                       const GValue *value,
1024                       GParamSpec *pspec)
1025 {
1026         switch (prop_id)
1027         {
1028                 /* Read only */
1029                 case PROP_STATUS:
1030                 case PROP_FIND_STATUS:
1031                         break;
1032         }
1033 }
1034
1035 static void
1036 ev_view_get_property (GObject *object,
1037                       guint prop_id,
1038                       GValue *value,
1039                       GParamSpec *pspec)
1040 {
1041         EvView *view = EV_VIEW (object);
1042
1043         switch (prop_id)
1044         {
1045                 case PROP_STATUS:
1046                         g_value_set_string (value, view->status);
1047                         break;
1048                 case PROP_FIND_STATUS:
1049                         g_value_set_string (value, view->status);
1050                         break;
1051         }
1052 }
1053
1054 static void
1055 ev_view_class_init (EvViewClass *class)
1056 {
1057         GObjectClass *object_class = G_OBJECT_CLASS (class);
1058         GtkObjectClass *gtk_object_class = GTK_OBJECT_CLASS (class);
1059         GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
1060         GtkBindingSet *binding_set;
1061
1062         object_class->finalize = ev_view_finalize;
1063         object_class->set_property = ev_view_set_property;
1064         object_class->get_property = ev_view_get_property;
1065
1066         widget_class->expose_event = ev_view_expose_event;
1067         widget_class->button_press_event = ev_view_button_press_event;
1068         widget_class->motion_notify_event = ev_view_motion_notify_event;
1069         widget_class->button_release_event = ev_view_button_release_event;
1070         widget_class->size_request = ev_view_size_request;
1071         widget_class->size_allocate = ev_view_size_allocate;
1072         widget_class->realize = ev_view_realize;
1073         widget_class->unrealize = ev_view_unrealize;
1074         gtk_object_class->destroy = ev_view_destroy;
1075
1076         class->set_scroll_adjustments = ev_view_set_scroll_adjustments;
1077         class->scroll_view = ev_view_scroll_view;
1078
1079         widget_class->set_scroll_adjustments_signal =  g_signal_new ("set-scroll-adjustments",
1080                                                                      G_OBJECT_CLASS_TYPE (object_class),
1081                                                                      G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1082                                                                      G_STRUCT_OFFSET (EvViewClass, set_scroll_adjustments),
1083                                                                      NULL, NULL,
1084                                                                      ev_marshal_VOID__OBJECT_OBJECT,
1085                                                                      G_TYPE_NONE, 2,
1086                                                                      GTK_TYPE_ADJUSTMENT,
1087                                                                      GTK_TYPE_ADJUSTMENT);
1088
1089         g_signal_new ("scroll_view",
1090                       G_TYPE_FROM_CLASS (object_class),
1091                       G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1092                       G_STRUCT_OFFSET (EvViewClass, scroll_view),
1093                       NULL, NULL,
1094                       ev_marshal_VOID__ENUM_BOOLEAN,
1095                       G_TYPE_NONE, 2,
1096                       GTK_TYPE_SCROLL_TYPE,
1097                       G_TYPE_BOOLEAN);
1098
1099         g_object_class_install_property (object_class,
1100                                          PROP_STATUS,
1101                                          g_param_spec_string ("status",
1102                                                               "Status Message",
1103                                                               "The status message",
1104                                                               NULL,
1105                                                               G_PARAM_READABLE));
1106
1107         g_object_class_install_property (object_class,
1108                                          PROP_STATUS,
1109                                          g_param_spec_string ("find-status",
1110                                                               "Find Status Message",
1111                                                               "The find status message",
1112                                                               NULL,
1113                                                               G_PARAM_READABLE));
1114
1115         binding_set = gtk_binding_set_by_class (class);
1116
1117         add_scroll_binding (binding_set, GDK_Left,  GTK_SCROLL_STEP_BACKWARD, TRUE);
1118         add_scroll_binding (binding_set, GDK_Right, GTK_SCROLL_STEP_FORWARD,  TRUE);
1119         add_scroll_binding (binding_set, GDK_Up,    GTK_SCROLL_STEP_BACKWARD, FALSE);
1120         add_scroll_binding (binding_set, GDK_Down,  GTK_SCROLL_STEP_FORWARD,  FALSE);
1121
1122         add_scroll_binding (binding_set, GDK_Page_Up,   GTK_SCROLL_PAGE_BACKWARD, FALSE);
1123         add_scroll_binding (binding_set, GDK_Page_Down, GTK_SCROLL_PAGE_FORWARD,  FALSE);
1124 }
1125
1126 static void
1127 ev_view_init (EvView *view)
1128 {
1129         GTK_WIDGET_SET_FLAGS (view, GTK_CAN_FOCUS);
1130
1131         view->spacing = 10;
1132         view->scale = 1.0;
1133         view->current_page = 0;
1134         view->pressed_button = -1;
1135         view->cursor = EV_VIEW_CURSOR_NORMAL;
1136 }
1137
1138 static void
1139 update_find_status_message (EvView *view)
1140 {
1141         char *message;
1142
1143 //      g_mutex_lock (EV_DOC_MUTEX);
1144         if (ev_document_get_page (view->document) == view->find_page) {
1145                 int results;
1146
1147 //              g_mutex_lock (EV_DOC_MUTEX);
1148                 results = ev_document_find_get_n_results
1149                                 (EV_DOCUMENT_FIND (view->document));
1150 //              g_mutex_unlock (EV_DOC_MUTEX);
1151                 /* TRANS: Sometimes this could be better translated as
1152                    "%d hit(s) on this page".  Therefore this string
1153                    contains plural cases. */
1154                 message = g_strdup_printf (ngettext ("%d found on this page",
1155                                                      "%d found on this page",
1156                                                      results),
1157                                            results);
1158         } else {
1159                 double percent;
1160
1161                 g_mutex_lock (EV_DOC_MUTEX);
1162                 percent = ev_document_find_get_progress
1163                                 (EV_DOCUMENT_FIND (view->document));
1164                 g_mutex_unlock (EV_DOC_MUTEX);
1165                 if (percent >= (1.0 - 1e-10)) {
1166                         message = g_strdup (_("Not found"));
1167                 } else {
1168                         message = g_strdup_printf (_("%3d%% remaining to search"),
1169                                                    (int) ((1.0 - percent) * 100));
1170                 }
1171
1172         }
1173 //      g_mutex_unlock (EV_DOC_MUTEX);
1174
1175         ev_view_set_find_status (view, message);
1176 //      g_free (message);
1177 }
1178
1179 #define MARGIN 5
1180
1181 static void
1182 ensure_rectangle_is_visible (EvView *view, GdkRectangle *rect)
1183 {
1184         GtkWidget *widget = GTK_WIDGET (view);
1185         GtkAdjustment *adjustment;
1186         int value;
1187
1188         adjustment = view->vadjustment;
1189
1190         if (rect->y < adjustment->value) {
1191                 value = MAX (adjustment->lower, rect->y - MARGIN);
1192                 gtk_adjustment_set_value (view->vadjustment, value);
1193         } else if (rect->y + rect->height >
1194                    adjustment->value + widget->allocation.height) {
1195                 value = MIN (adjustment->upper, rect->y + rect->height -
1196                              widget->allocation.height + MARGIN);
1197                 gtk_adjustment_set_value (view->vadjustment, value);
1198         }
1199
1200         adjustment = view->hadjustment;
1201
1202         if (rect->x < adjustment->value) {
1203                 value = MAX (adjustment->lower, rect->x - MARGIN);
1204                 gtk_adjustment_set_value (view->hadjustment, value);
1205         } else if (rect->x + rect->height >
1206                    adjustment->value + widget->allocation.width) {
1207                 value = MIN (adjustment->upper, rect->x + rect->width -
1208                              widget->allocation.width + MARGIN);
1209                 gtk_adjustment_set_value (view->hadjustment, value);
1210         }
1211 }
1212
1213 static void
1214 jump_to_find_result (EvView *view)
1215 {
1216         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
1217         GdkRectangle rect;
1218         int n_results;
1219
1220         g_mutex_lock (EV_DOC_MUTEX);
1221         n_results = ev_document_find_get_n_results (find);
1222         g_mutex_unlock (EV_DOC_MUTEX);
1223
1224         if (n_results > view->find_result) {
1225                 g_mutex_lock (EV_DOC_MUTEX);
1226                 ev_document_find_get_result
1227                         (find, view->find_result, &rect);
1228                 g_mutex_unlock (EV_DOC_MUTEX);
1229
1230                 ensure_rectangle_is_visible (view, &rect);
1231         }
1232 }
1233
1234 static void
1235 jump_to_find_page (EvView *view)
1236 {
1237         int n_pages, i;
1238
1239         n_pages = ev_page_cache_get_n_pages (view->page_cache);
1240
1241         for (i = 0; i <= n_pages; i++) {
1242                 int has_results;
1243                 int page;
1244
1245                 page = i + view->find_page;
1246                 if (page > n_pages) {
1247                         page = page - n_pages;
1248                 }
1249
1250                 g_mutex_lock (EV_DOC_MUTEX);
1251                 has_results = ev_document_find_page_has_results
1252                                 (EV_DOCUMENT_FIND (view->document), page);
1253                 if (has_results == -1) {
1254                         view->find_page = page;
1255                         break;
1256                 } else if (has_results == 1) {
1257                         ev_page_cache_set_current_page (view->page_cache, page);
1258                         jump_to_find_result (view);
1259                         break;
1260                 }
1261         }
1262 }
1263
1264 static void
1265 find_changed_cb (EvDocument *document, int page, EvView *view)
1266 {
1267         jump_to_find_page (view);
1268         jump_to_find_result (view);
1269         update_find_status_message (view);
1270
1271 #if 0
1272         /* FIXME: */
1273         if (ev_document_get_page (document) == page) {
1274                 gtk_widget_queue_draw (GTK_WIDGET (view));
1275         }
1276 #endif
1277 }
1278 /*** Public API ***/
1279
1280 GtkWidget*
1281 ev_view_new (void)
1282 {
1283         return g_object_new (EV_TYPE_VIEW, NULL);
1284 }
1285
1286 static void
1287 job_finished_cb (EvPixbufCache *pixbuf_cache,
1288                  EvView        *view)
1289 {
1290         gtk_widget_queue_draw (GTK_WIDGET (view));
1291 }
1292
1293
1294 static void
1295 page_changed_cb (EvPageCache *page_cache,
1296                  int          new_page,
1297                  EvView      *view)
1298 {
1299         int old_page = view->current_page;
1300         int old_width, old_height;
1301         int new_width, new_height;
1302
1303         if (old_page == new_page)
1304                 return;
1305
1306         ev_page_cache_get_size (page_cache,
1307                                 old_page,
1308                                 view->scale,
1309                                 &old_width, &old_height);
1310         ev_page_cache_get_size (page_cache,
1311                                 new_page,
1312                                 view->scale,
1313                                 &new_width, &new_height);
1314
1315         if (view->cursor != EV_VIEW_CURSOR_HIDDEN) {
1316                 //ev_view_set_cursor (view, EV_VIEW_CURSOR_WAIT);
1317         }
1318
1319         view->current_page = new_page;
1320         view->has_selection = FALSE;
1321
1322         ev_pixbuf_cache_set_page_range (view->pixbuf_cache,
1323                                         view->current_page,
1324                                         view->current_page,
1325                                         view->scale);
1326
1327         if (new_width != old_width || new_height != old_height)
1328                 gtk_widget_queue_resize (GTK_WIDGET (view));
1329         else
1330                 gtk_widget_queue_draw (GTK_WIDGET (view));
1331
1332         gtk_adjustment_set_value (view->vadjustment,
1333                                   view->vadjustment->lower);
1334
1335         if (EV_IS_DOCUMENT_FIND (view->document)) {
1336                 view->find_page = new_page;
1337                 view->find_result = 0;
1338                 update_find_status_message (view);
1339         }
1340 }
1341
1342 void
1343 ev_view_set_document (EvView     *view,
1344                       EvDocument *document)
1345 {
1346         g_return_if_fail (EV_IS_VIEW (view));
1347
1348         if (document != view->document) {
1349                 if (view->document) {
1350                         g_signal_handlers_disconnect_by_func (view->document,
1351                                                               find_changed_cb,
1352                                                               view);
1353                         g_object_unref (view->document);
1354                         view->page_cache = NULL;
1355
1356                 }
1357
1358                 view->document = document;
1359                 view->find_page = 1;
1360                 view->find_result = 0;
1361
1362                 if (view->document) {
1363                         g_object_ref (view->document);
1364                         if (EV_IS_DOCUMENT_FIND (view->document)) {
1365                                 g_signal_connect (view->document,
1366                                                   "find_changed",
1367                                                   G_CALLBACK (find_changed_cb),
1368                                                   view);
1369                         }
1370                         view->page_cache = ev_document_get_page_cache (view->document);
1371                         g_signal_connect (view->page_cache, "page-changed", G_CALLBACK (page_changed_cb), view);
1372                         view->pixbuf_cache = ev_pixbuf_cache_new (view->document);
1373                         g_signal_connect (view->pixbuf_cache, "job-finished", G_CALLBACK (job_finished_cb), view);
1374                 }
1375
1376                 gtk_widget_queue_resize (GTK_WIDGET (view));
1377         }
1378 }
1379
1380 static void
1381 go_to_link (EvView *view, EvLink *link)
1382 {
1383         EvLinkType type;
1384         const char *uri;
1385         int page;
1386
1387         type = ev_link_get_link_type (link);
1388
1389         switch (type) {
1390                 case EV_LINK_TYPE_TITLE:
1391                         break;
1392                 case EV_LINK_TYPE_PAGE:
1393                         page = ev_link_get_page (link);
1394                         ev_page_cache_set_current_page (view->page_cache, page);
1395                         break;
1396                 case EV_LINK_TYPE_EXTERNAL_URI:
1397                         uri = ev_link_get_uri (link);
1398                         gnome_vfs_url_show (uri);
1399                         break;
1400         }
1401 }
1402
1403 void
1404 ev_view_go_to_link (EvView *view, EvLink *link)
1405 {
1406         go_to_link (view, link);
1407 }
1408
1409 static void
1410 ev_view_zoom (EvView   *view,
1411               double    factor,
1412               gboolean  relative)
1413 {
1414         double scale;
1415
1416         if (relative)
1417                 scale = view->scale * factor;
1418         else
1419                 scale = factor;
1420
1421         scale = CLAMP (scale, MIN_SCALE, MAX_SCALE);
1422
1423         view->scale = scale;
1424         gtk_widget_queue_resize (GTK_WIDGET (view));
1425 }
1426
1427 void
1428 ev_view_zoom_in (EvView *view)
1429 {
1430         view->width = view->height = -1;
1431         ev_view_zoom (view, ZOOM_IN_FACTOR, TRUE);
1432 }
1433
1434 void
1435 ev_view_zoom_out (EvView *view)
1436 {
1437         view->width = view->height = -1;
1438         ev_view_zoom (view, ZOOM_OUT_FACTOR, TRUE);
1439 }
1440
1441 static double
1442 size_to_zoom_factor (EvView *view, int width, int height)
1443 {
1444         int doc_width, doc_height;
1445         double scale, scale_w, scale_h;
1446         GtkBorder border;
1447
1448         doc_width = doc_height = 0;
1449         scale = scale_w = scale_h = 1.0;
1450         ev_page_cache_get_size (view->page_cache,
1451                                 view->current_page,
1452                                 view->scale,
1453                                 &doc_width,
1454                                 &doc_height);
1455
1456         /* FIXME: The border size isn't constant.  Ugh.  Still, if we have extra
1457          * space, we just cut it from the border */
1458         ev_document_misc_get_page_border_size (doc_width, doc_height, &border);
1459
1460         if (doc_width == 0 && doc_height == 0) {
1461                 return 0;
1462         }
1463
1464         if (width >= 0) {
1465                 int target_width;
1466
1467                 target_width = width - (view->spacing * 2 + border.left + border.right);
1468                 scale = scale_w = (double)target_width * view->scale / doc_width;
1469         }
1470
1471         if (height >= 0) {
1472                 int target_height;
1473
1474                 target_height = height - (view->spacing * 2 + border.top + border.bottom);
1475                 scale = scale_h = (double)target_height * view->scale / doc_height;
1476         }
1477
1478         if (width >= 0 && height >= 0) {
1479                 scale = (scale_w < scale_h) ? scale_w : scale_h;
1480         }
1481
1482         return scale;
1483 }
1484
1485 void
1486 ev_view_set_size (EvView     *view,
1487                   int         width,
1488                   int         height)
1489 {
1490         double factor;
1491
1492         if (!view->document)
1493                 return;
1494
1495         if (view->width != width ||
1496             view->height != height) {
1497                 view->width = width;
1498                 view->height = height;
1499                 factor = size_to_zoom_factor (view, width, height);
1500                 ev_view_zoom (view, factor, FALSE);
1501                 gtk_widget_queue_resize (GTK_WIDGET (view));
1502         }
1503 }
1504
1505 const char *
1506 ev_view_get_status (EvView *view)
1507 {
1508         g_return_val_if_fail (EV_IS_VIEW (view), NULL);
1509
1510         return view->status;
1511 }
1512
1513 const char *
1514 ev_view_get_find_status (EvView *view)
1515 {
1516         g_return_val_if_fail (EV_IS_VIEW (view), NULL);
1517
1518         return view->find_status;
1519 }
1520
1521 void
1522 ev_view_find_next (EvView *view)
1523 {
1524         EvPageCache *page_cache;
1525         int n_results, n_pages;
1526         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
1527
1528         page_cache = ev_document_get_page_cache (view->document);
1529         g_mutex_lock (EV_DOC_MUTEX);
1530         n_results = ev_document_find_get_n_results (find);
1531         g_mutex_unlock (EV_DOC_MUTEX);
1532
1533         n_pages = ev_page_cache_get_n_pages (page_cache);
1534
1535         view->find_result++;
1536
1537         if (view->find_result >= n_results) {
1538                 view->find_result = 0;
1539                 view->find_page++;
1540
1541                 if (view->find_page > n_pages) {
1542                         view->find_page = 1;
1543                 }
1544
1545                 jump_to_find_page (view);
1546         } else {
1547                 jump_to_find_result (view);
1548                 gtk_widget_queue_draw (GTK_WIDGET (view));
1549         }
1550 }
1551
1552 void
1553 ev_view_find_previous (EvView *view)
1554 {
1555         int n_results, n_pages;
1556         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
1557         EvPageCache *page_cache;
1558
1559         page_cache = ev_document_get_page_cache (view->document);
1560
1561         g_mutex_lock (EV_DOC_MUTEX);
1562         n_results = ev_document_find_get_n_results (find);
1563         g_mutex_unlock (EV_DOC_MUTEX);
1564
1565         n_pages = ev_page_cache_get_n_pages (page_cache);
1566
1567         view->find_result--;
1568
1569         if (view->find_result < 0) {
1570                 view->find_result = 0;
1571                 view->find_page--;
1572
1573                 if (view->find_page < 1) {
1574                         view->find_page = n_pages;
1575                 }
1576
1577                 jump_to_find_page (view);
1578         } else {
1579                 jump_to_find_result (view);
1580                 gtk_widget_queue_draw (GTK_WIDGET (view));
1581         }
1582 }
1583 void
1584 ev_view_hide_cursor (EvView *view)
1585 {
1586        ev_view_set_cursor (view, EV_VIEW_CURSOR_HIDDEN);
1587 }
1588
1589 void
1590 ev_view_show_cursor (EvView *view)
1591 {
1592        ev_view_set_cursor (view, EV_VIEW_CURSOR_LINK);
1593 }