shell/ev-view.c

   1 /* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8; c-indent-level: 8 -*- */
   2 /* this file is part of evince, a gnome document viewer
   3  *
   4  *  Copyright (C) 2004 Red Hat, Inc
   5  *
   6  * Evince is free software; you can redistribute it and/or modify it
   7  * under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * Evince is distributed in the hope that it will be useful, but
  12  * WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
  19  */
  20
  21 #include <math.h>
  22 #include <gtk/gtkalignment.h>
  23 #include <glib/gi18n.h>
  24 #include <gtk/gtkbindings.h>
  25 #include <gtk/gtkselection.h>
  26 #include <gtk/gtkclipboard.h>
  27 #include <gdk/gdkkeysyms.h>
  28 #include <libgnomevfs/gnome-vfs-utils.h>
  29
  30 #include "ev-marshal.h"
  31 #include "ev-view.h"
  32 #include "ev-document-find.h"
  33 #include "ev-document-misc.h"
  34 #include "ev-debug.h"
  35 #include "ev-job-queue.h"
  36 #include "ev-page-cache.h"
  37 #include "ev-pixbuf-cache.h"
  38
  39 #define EV_VIEW_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass), EV_TYPE_VIEW, EvViewClass))
  40 #define EV_IS_VIEW_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), EV_TYPE_VIEW))
  41 #define EV_VIEW_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj), EV_TYPE_VIEW, EvViewClass))
  42
  43 enum {
  44         PROP_0,
  45         PROP_STATUS,
  46         PROP_FIND_STATUS
  47 };
  48
  49 enum {
  50   TARGET_STRING,
  51   TARGET_TEXT,
  52   TARGET_COMPOUND_TEXT,
  53   TARGET_UTF8_STRING,
  54   TARGET_TEXT_BUFFER_CONTENTS
  55 };
  56
  57 enum {
  58         EV_SCROLL_PAGE_FORWARD,
  59         EV_SCROLL_PAGE_BACKWARD
  60 };
  61
  62 static const GtkTargetEntry targets[] = {
  63         { "STRING", 0, TARGET_STRING },
  64         { "TEXT",   0, TARGET_TEXT },
  65         { "COMPOUND_TEXT", 0, TARGET_COMPOUND_TEXT },
  66         { "UTF8_STRING", 0, TARGET_UTF8_STRING },
  67 };
  68
  69 typedef enum {
  70         EV_VIEW_CURSOR_NORMAL,
  71         EV_VIEW_CURSOR_LINK,
  72         EV_VIEW_CURSOR_WAIT,
  73         EV_VIEW_CURSOR_HIDDEN
  74 } EvViewCursor;
  75
  76 #define ZOOM_IN_FACTOR  1.2
  77 #define ZOOM_OUT_FACTOR (1.0/ZOOM_IN_FACTOR)
  78
  79 #define MIN_SCALE 0.05409
  80 #define MAX_SCALE 18.4884
  81
  82 struct _EvView {
  83         GtkWidget parent_instance;
  84
  85         EvDocument *document;
  86
  87         GdkWindow *bin_window;
  88
  89         char *status;
  90         char *find_status;
  91
  92         int scroll_x;
  93         int scroll_y;
  94
  95         gboolean pressed_button;
  96         gboolean has_selection;
  97         GdkPoint selection_start;
  98         EvRectangle selection;
  99         EvViewCursor cursor;
 100
 101         GtkAdjustment *hadjustment;
 102         GtkAdjustment *vadjustment;
 103
 104         EvPageCache *page_cache;
 105         EvPixbufCache *pixbuf_cache;
 106
 107         gint current_page;
 108         EvJobRender *current_job;
 109
 110         int find_page;
 111         int find_result;
 112         int spacing;
 113
 114         double scale;
 115         int width;
 116         int height;
 117 };
 118
 119 struct _EvViewClass {
 120         GtkWidgetClass parent_class;
 121
 122         void    (*set_scroll_adjustments) (EvView         *view,
 123                                            GtkAdjustment  *hadjustment,
 124                                            GtkAdjustment  *vadjustment);
 125         void    (*scroll_view)            (EvView         *view,
 126                                            GtkScrollType   scroll,
 127                                            gboolean        horizontal);
 128
 129 };
 130
 131
 132 static void ev_view_set_scroll_adjustments (EvView         *view,
 133                                             GtkAdjustment  *hadjustment,
 134                                             GtkAdjustment  *vadjustment);
 135
 136 G_DEFINE_TYPE (EvView, ev_view, GTK_TYPE_WIDGET)
 137
 138 /*** Helper functions ***/
 139
 140 static void
 141 view_update_adjustments (EvView *view)
 142 {
 143         int old_x = view->scroll_x;
 144         int old_y = view->scroll_y;
 145
 146         if (view->hadjustment)
 147                 view->scroll_x = view->hadjustment->value;
 148         else
 149                 view->scroll_x = 0;
 150
 151         if (view->vadjustment)
 152                 view->scroll_y = view->vadjustment->value;
 153         else
 154                 view->scroll_y = 0;
 155
 156         if (GTK_WIDGET_REALIZED (view) &&
 157             (view->scroll_x != old_x || view->scroll_y != old_y)) {
 158                 gdk_window_move (view->bin_window, - view->scroll_x, - view->scroll_y);
 159                 gdk_window_process_updates (view->bin_window, TRUE);
 160         }
 161 }
 162
 163 static void
 164 view_set_adjustment_values (EvView         *view,
 165                             GtkOrientation  orientation)
 166 {
 167         GtkWidget *widget = GTK_WIDGET (view);
 168         GtkAdjustment *adjustment;
 169         gboolean value_changed = FALSE;
 170         int requisition;
 171         int allocation;
 172
 173         if (orientation == GTK_ORIENTATION_HORIZONTAL)  {
 174                 requisition = widget->requisition.width;
 175                 allocation = widget->allocation.width;
 176                 adjustment = view->hadjustment;
 177         } else {
 178                 requisition = widget->requisition.height;
 179                 allocation = widget->allocation.height;
 180                 adjustment = view->vadjustment;
 181         }
 182
 183         if (!adjustment)
 184                 return;
 185
 186         adjustment->page_size = allocation;
 187         adjustment->step_increment = allocation * 0.1;
 188         adjustment->page_increment = allocation * 0.9;
 189         adjustment->lower = 0;
 190         adjustment->upper = MAX (allocation, requisition);
 191
 192         if (adjustment->value > adjustment->upper - adjustment->page_size) {
 193                 adjustment->value = adjustment->upper - adjustment->page_size;
 194                 value_changed = TRUE;
 195         }
 196
 197         gtk_adjustment_changed (adjustment);
 198         if (value_changed)
 199                 gtk_adjustment_value_changed (adjustment);
 200 }
 201
 202 /*** Virtual function implementations ***/
 203
 204 static void
 205 ev_view_finalize (GObject *object)
 206 {
 207         EvView *view = EV_VIEW (object);
 208
 209         LOG ("Finalize");
 210
 211
 212         ev_view_set_scroll_adjustments (view, NULL, NULL);
 213
 214         G_OBJECT_CLASS (ev_view_parent_class)->finalize (object);
 215 }
 216
 217 static void
 218 ev_view_destroy (GtkObject *object)
 219 {
 220         EvView *view = EV_VIEW (object);
 221
 222         if (view->document) {
 223                 g_object_unref (view->document);
 224                 view->document = NULL;
 225         }
 226         if (view->pixbuf_cache) {
 227                 g_object_unref (view->pixbuf_cache);
 228                 view->pixbuf_cache = NULL;
 229         }
 230         ev_view_set_scroll_adjustments (view, NULL, NULL);
 231
 232         GTK_OBJECT_CLASS (ev_view_parent_class)->destroy (object);
 233 }
 234
 235 static void
 236 ev_view_get_offsets (EvView *view, int *x_offset, int *y_offset)
 237 {
 238         EvDocument *document = view->document;
 239         GtkWidget *widget = GTK_WIDGET (view);
 240         int width, height, target_width, target_height;
 241         GtkBorder border;
 242
 243         g_return_if_fail (EV_IS_DOCUMENT (document));
 244
 245         ev_page_cache_get_size (view->page_cache,
 246                                 view->current_page,
 247                                 view->scale,
 248                                 &width, &height);
 249
 250         ev_document_misc_get_page_border_size (width, height, &border);
 251
 252         *x_offset = view->spacing;
 253         *y_offset = view->spacing;
 254         target_width = width + border.left + border.right + view->spacing * 2;
 255         target_height = height + border.top + border.bottom + view->spacing * 2;
 256         *x_offset += MAX (0, (widget->allocation.width - target_width) / 2);
 257         *y_offset += MAX (0, (widget->allocation.height - target_height) / 2);
 258 }
 259
 260 static void
 261 view_rect_to_doc_rect (EvView *view, GdkRectangle *view_rect, EvRectangle *doc_rect)
 262 {
 263         int x_offset, y_offset;
 264
 265         ev_view_get_offsets (view, &x_offset, &y_offset);
 266         doc_rect->x1 = (double) (view_rect->x - x_offset) / view->scale;
 267         doc_rect->y1 = (double) (view_rect->y - y_offset) / view->scale;
 268         doc_rect->x2 = doc_rect->x1 + (double) view_rect->width / view->scale;
 269         doc_rect->y2 = doc_rect->y1 + (double) view_rect->height / view->scale;
 270 }
 271
 272 static void
 273 doc_rect_to_view_rect (EvView *view, EvRectangle *doc_rect, GdkRectangle *view_rect)
 274 {
 275         int x_offset, y_offset;
 276
 277         ev_view_get_offsets (view, &x_offset, &y_offset);
 278         view_rect->x = floor (doc_rect->x1 * view->scale) + x_offset;
 279         view_rect->y = floor (doc_rect->y1 * view->scale) + y_offset;
 280         view_rect->width = ceil (doc_rect->x2 * view->scale) + x_offset - view_rect->x;
 281         view_rect->height = ceil (doc_rect->y2 * view->scale) + y_offset - view_rect->y;
 282 }
 283
 284
 285 /* Called by size_request to make sure we have appropriate jobs running.
 286  */
 287 static void
 288 ev_view_size_request (GtkWidget      *widget,
 289                       GtkRequisition *requisition)
 290 {
 291         EvView *view = EV_VIEW (widget);
 292         GtkBorder border;
 293         gint width, height;
 294
 295         if (!GTK_WIDGET_REALIZED (widget))
 296                 return;
 297
 298         if (!view->document) {
 299                 requisition->width = 1;
 300                 requisition->height = 1;
 301                 return;
 302         }
 303
 304         ev_page_cache_get_size (view->page_cache,
 305                                 view->current_page,
 306                                 view->scale,
 307                                 &width, &height);
 308
 309         ev_pixbuf_cache_set_page_range (view->pixbuf_cache,
 310                                         view->current_page,
 311                                         view->current_page,
 312                                         view->scale);
 313         ev_document_misc_get_page_border_size (width, height, &border);
 314
 315         if (view->width >= 0) {
 316                 requisition->width = 0;
 317         } else {
 318                 requisition->width = width + border.left + border.right +
 319                                      view->spacing * 2;
 320         }
 321
 322         if (view->height >= 0) {
 323                 requisition->height = 0;
 324         } else {
 325                 requisition->height = height + border.top + border.bottom +
 326                                       view->spacing * 2;
 327         }
 328 }
 329
 330 static void
 331 ev_view_size_allocate (GtkWidget      *widget,
 332                        GtkAllocation  *allocation)
 333 {
 334         EvView *view = EV_VIEW (widget);
 335
 336         GTK_WIDGET_CLASS (ev_view_parent_class)->size_allocate (widget, allocation);
 337
 338         view_set_adjustment_values (view, GTK_ORIENTATION_HORIZONTAL);
 339         view_set_adjustment_values (view, GTK_ORIENTATION_VERTICAL);
 340
 341         if (GTK_WIDGET_REALIZED (widget)) {
 342                 gdk_window_resize (view->bin_window,
 343                                    MAX (widget->allocation.width, widget->requisition.width),
 344                                    MAX (widget->allocation.height, widget->requisition.height));
 345         }
 346 }
 347
 348 static void
 349 ev_view_realize (GtkWidget *widget)
 350 {
 351         EvView *view = EV_VIEW (widget);
 352         GdkWindowAttr attributes;
 353
 354         GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
 355
 356
 357         attributes.window_type = GDK_WINDOW_CHILD;
 358         attributes.wclass = GDK_INPUT_OUTPUT;
 359         attributes.visual = gtk_widget_get_visual (widget);
 360         attributes.colormap = gtk_widget_get_colormap (widget);
 361
 362         attributes.x = widget->allocation.x;
 363         attributes.y = widget->allocation.y;
 364         attributes.width = widget->allocation.width;
 365         attributes.height = widget->allocation.height;
 366         attributes.event_mask = 0;
 367
 368         widget->window = gdk_window_new (gtk_widget_get_parent_window (widget),
 369                                          &attributes,
 370                                          GDK_WA_X | GDK_WA_Y |
 371                                          GDK_WA_COLORMAP |
 372                                          GDK_WA_VISUAL);
 373         gdk_window_set_user_data (widget->window, widget);
 374         widget->style = gtk_style_attach (widget->style, widget->window);
 375         gdk_window_set_background (widget->window, &widget->style->mid[widget->state]);
 376
 377         attributes.x = 0;
 378         attributes.y = 0;
 379         attributes.width = MAX (widget->allocation.width, widget->requisition.width);
 380         attributes.height = MAX (widget->allocation.height, widget->requisition.height);
 381         attributes.event_mask = GDK_EXPOSURE_MASK |
 382                                 GDK_BUTTON_PRESS_MASK |
 383                                 GDK_BUTTON_RELEASE_MASK |
 384                                 GDK_SCROLL_MASK |
 385                                 GDK_KEY_PRESS_MASK |
 386                                 GDK_POINTER_MOTION_MASK |
 387                                 GDK_LEAVE_NOTIFY_MASK;
 388
 389         view->bin_window = gdk_window_new (widget->window,
 390                                            &attributes,
 391                                            GDK_WA_X | GDK_WA_Y |
 392                                            GDK_WA_COLORMAP |
 393                                            GDK_WA_VISUAL);
 394         gdk_window_set_user_data (view->bin_window, widget);
 395         gdk_window_show (view->bin_window);
 396
 397         widget->style = gtk_style_attach (widget->style, view->bin_window);
 398         gdk_window_set_background (view->bin_window, &widget->style->mid[widget->state]);
 399
 400         if (view->document) {
 401                 /* We can't get page size without a target, so we have to
 402                  * queue a size request at realization. Could be fixed
 403                  * with EvDocument changes to allow setting a GdkScreen
 404                  * without setting a target.
 405                  */
 406                 gtk_widget_queue_resize (widget);
 407         }
 408 }
 409
 410 static void
 411 ev_view_unrealize (GtkWidget *widget)
 412 {
 413         EvView *view = EV_VIEW (widget);
 414
 415         gdk_window_set_user_data (view->bin_window, NULL);
 416         gdk_window_destroy (view->bin_window);
 417         view->bin_window = NULL;
 418
 419         GTK_WIDGET_CLASS (ev_view_parent_class)->unrealize (widget);
 420 }
 421
 422 static guint32
 423 ev_gdk_color_to_rgb (const GdkColor *color)
 424 {
 425   guint32 result;
 426   result = (0xff0000 | (color->red & 0xff00));
 427   result <<= 8;
 428   result |= ((color->green & 0xff00) | (color->blue >> 8));
 429   return result;
 430 }
 431
 432 static void
 433 draw_rubberband (GtkWidget *widget, GdkWindow *window,
 434                  const GdkRectangle *rect, guchar alpha)
 435 {
 436         GdkGC *gc;
 437         GdkPixbuf *pixbuf;
 438         GdkColor *fill_color_gdk;
 439         guint fill_color;
 440
 441         fill_color_gdk = gdk_color_copy (&GTK_WIDGET (widget)->style->base[GTK_STATE_SELECTED]);
 442         fill_color = ev_gdk_color_to_rgb (fill_color_gdk) << 8 | alpha;
 443
 444         pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE, 8,
 445                                  rect->width, rect->height);
 446         gdk_pixbuf_fill (pixbuf, fill_color);
 447
 448         gdk_draw_pixbuf (window, NULL, pixbuf,
 449                          0, 0,
 450                          rect->x, rect->y,
 451                          rect->width, rect->height,
 452                          GDK_RGB_DITHER_NONE,
 453                          0, 0);
 454
 455         g_object_unref (pixbuf);
 456
 457         gc = gdk_gc_new (window);
 458         gdk_gc_set_rgb_fg_color (gc, fill_color_gdk);
 459         gdk_draw_rectangle (window, gc, FALSE,
 460                             rect->x, rect->y,
 461                             rect->width - 1,
 462                             rect->height - 1);
 463         g_object_unref (gc);
 464
 465         gdk_color_free (fill_color_gdk);
 466 }
 467
 468 static void
 469 highlight_find_results (EvView *view)
 470 {
 471         EvDocumentFind *find;
 472         int i, results = 0;
 473
 474         g_return_if_fail (EV_IS_DOCUMENT_FIND (view->document));
 475
 476         find = EV_DOCUMENT_FIND (view->document);
 477
 478         g_mutex_lock (EV_DOC_MUTEX);
 479         results = ev_document_find_get_n_results (find, view->current_page);
 480         g_mutex_unlock (EV_DOC_MUTEX);
 481
 482         for (i = 0; i < results; i++) {
 483                 EvRectangle rectangle;
 484                 GdkRectangle view_rectangle;
 485                 guchar alpha;
 486
 487                 alpha = (i == view->find_result) ? 0x90 : 0x20;
 488                 g_mutex_lock (EV_DOC_MUTEX);
 489                 ev_document_find_get_result (find, view->current_page,
 490                                              i, &rectangle);
 491                 g_mutex_unlock (EV_DOC_MUTEX);
 492                 doc_rect_to_view_rect (view, &rectangle, &view_rectangle);
 493                 draw_rubberband (GTK_WIDGET (view), view->bin_window,
 494                                  &view_rectangle, alpha);
 495         }
 496 }
 497
 498
 499 static void
 500 expose_bin_window (GtkWidget      *widget,
 501                    GdkEventExpose *event)
 502 {
 503         EvView *view = EV_VIEW (widget);
 504         GtkBorder border;
 505         gint width, height;
 506         GdkRectangle area;
 507         int x_offset, y_offset;
 508         GdkPixbuf *scaled_image;
 509         GdkPixbuf *current_pixbuf;
 510
 511         if (view->document == NULL)
 512                 return;
 513
 514         ev_view_get_offsets (view, &x_offset, &y_offset);
 515         ev_page_cache_get_size (view->page_cache,
 516                                 view->current_page,
 517                                 view->scale,
 518                                 &width, &height);
 519
 520         ev_document_misc_get_page_border_size (width, height, &border);
 521
 522         /* Paint the frame */
 523         area.x = x_offset;
 524         area.y = y_offset;
 525         area.width = width + border.left + border.right;
 526         area.height = height + border.top + border.bottom;
 527         ev_document_misc_paint_one_page (view->bin_window, widget, &area, &border);
 528
 529         /* Render the document itself */
 530         LOG ("Render area %d %d %d %d - Offset %d %d",
 531              event->area.x, event->area.y,
 532              event->area.width, event->area.height,
 533              x_offset, y_offset);
 534
 535         current_pixbuf = ev_pixbuf_cache_get_pixbuf (view->pixbuf_cache, view->current_page);
 536
 537         if (current_pixbuf == NULL)
 538                 scaled_image = NULL;
 539         else if (width == gdk_pixbuf_get_width (current_pixbuf) &&
 540                  height == gdk_pixbuf_get_height (current_pixbuf))
 541                 scaled_image = g_object_ref (current_pixbuf);
 542         else
 543                 scaled_image = gdk_pixbuf_scale_simple (current_pixbuf,
 544                                                         width, height,
 545                                                         GDK_INTERP_NEAREST);
 546         if (scaled_image) {
 547                 gdk_draw_pixbuf (view->bin_window,
 548                                  GTK_WIDGET (view)->style->fg_gc[GTK_STATE_NORMAL],
 549                                  scaled_image,
 550                                  0, 0,
 551                                  area.x + border.left,
 552                                  area.y + border.top,
 553                                  width, height,
 554                                  GDK_RGB_DITHER_NORMAL,
 555                                  0, 0);
 556                 g_object_unref (scaled_image);
 557         }
 558
 559         if (EV_IS_DOCUMENT_FIND (view->document)) {
 560                 highlight_find_results (view);
 561         }
 562
 563         if (view->has_selection) {
 564                 GdkRectangle rubberband;
 565
 566                 doc_rect_to_view_rect (view, &view->selection, &rubberband);
 567                 if (rubberband.width > 0 && rubberband.height > 0) {
 568                         draw_rubberband (widget, view->bin_window,
 569                                          &rubberband, 0x40);
 570                 }
 571         }
 572 }
 573
 574 static gboolean
 575 ev_view_expose_event (GtkWidget      *widget,
 576                       GdkEventExpose *event)
 577 {
 578         EvView *view = EV_VIEW (widget);
 579
 580         if (event->window == view->bin_window)
 581                 expose_bin_window (widget, event);
 582         else
 583                 return GTK_WIDGET_CLASS (ev_view_parent_class)->expose_event (widget, event);
 584
 585         return FALSE;
 586 }
 587
 588 void
 589 ev_view_select_all (EvView *ev_view)
 590 {
 591         GtkWidget *widget = GTK_WIDGET (ev_view);
 592         GdkRectangle selection;
 593         int width, height;
 594         int x_offset, y_offset;
 595         GtkBorder border;
 596
 597         g_return_if_fail (EV_IS_VIEW (ev_view));
 598
 599
 600         ev_view_get_offsets (ev_view, &x_offset, &y_offset);
 601         ev_page_cache_get_size (ev_view->page_cache,
 602                                 ev_view->current_page,
 603                                 ev_view->scale,
 604                                 &width, &height);
 605         ev_document_misc_get_page_border_size (width, height, &border);
 606
 607         ev_view->has_selection = TRUE;
 608         selection.x = x_offset + border.left;
 609         selection.y = y_offset + border.top;
 610         selection.width = width;
 611         selection.height = height;
 612         view_rect_to_doc_rect (ev_view, &selection, &ev_view->selection);
 613
 614         gtk_widget_queue_draw (widget);
 615 }
 616
 617 void
 618 ev_view_copy (EvView *ev_view)
 619 {
 620         GtkClipboard *clipboard;
 621         char *text;
 622
 623         g_mutex_lock (EV_DOC_MUTEX);
 624         text = ev_document_get_text (ev_view->document,
 625                                      ev_view->current_page,
 626                                      &ev_view->selection);
 627         g_mutex_unlock (EV_DOC_MUTEX);
 628
 629         clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view),
 630                                               GDK_SELECTION_CLIPBOARD);
 631         gtk_clipboard_set_text (clipboard, text, -1);
 632         g_free (text);
 633 }
 634
 635 static void
 636 ev_view_primary_get_cb (GtkClipboard     *clipboard,
 637                         GtkSelectionData *selection_data,
 638                         guint             info,
 639                         gpointer          data)
 640 {
 641         EvView *ev_view = EV_VIEW (data);
 642         char *text;
 643
 644         g_mutex_lock (EV_DOC_MUTEX);
 645         text = ev_document_get_text (ev_view->document,
 646                                      ev_view->current_page,
 647                                      &ev_view->selection);
 648         g_mutex_unlock (EV_DOC_MUTEX);
 649         gtk_selection_data_set_text (selection_data, text, -1);
 650 }
 651
 652 static void
 653 ev_view_primary_clear_cb (GtkClipboard *clipboard,
 654                           gpointer      data)
 655 {
 656         EvView *ev_view = EV_VIEW (data);
 657
 658         ev_view->has_selection = FALSE;
 659 }
 660
 661 static void
 662 ev_view_update_primary_selection (EvView *ev_view)
 663 {
 664         GtkClipboard *clipboard;
 665
 666         clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view),
 667                                               GDK_SELECTION_PRIMARY);
 668
 669         if (ev_view->has_selection) {
 670                 if (!gtk_clipboard_set_with_owner (clipboard,
 671                                                    targets,
 672                                                    G_N_ELEMENTS (targets),
 673                                                    ev_view_primary_get_cb,
 674                                                    ev_view_primary_clear_cb,
 675                                                    G_OBJECT (ev_view)))
 676                         ev_view_primary_clear_cb (clipboard, ev_view);
 677         } else {
 678                 if (gtk_clipboard_get_owner (clipboard) == G_OBJECT (ev_view))
 679                         gtk_clipboard_clear (clipboard);
 680         }
 681 }
 682
 683 static gboolean
 684 ev_view_button_press_event (GtkWidget      *widget,
 685                             GdkEventButton *event)
 686 {
 687         EvView *view = EV_VIEW (widget);
 688
 689         if (!GTK_WIDGET_HAS_FOCUS (widget)) {
 690                 gtk_widget_grab_focus (widget);
 691         }
 692
 693         view->pressed_button = event->button;
 694
 695         switch (event->button) {
 696                 case 1:
 697                         if (view->has_selection) {
 698                                 view->has_selection = FALSE;
 699                                 gtk_widget_queue_draw (widget);
 700                         }
 701
 702                         view->selection_start.x = event->x;
 703                         view->selection_start.y = event->y;
 704                         break;
 705         }
 706
 707         return TRUE;
 708 }
 709
 710 static char *
 711 status_message_from_link (EvView *view, EvLink *link)
 712 {
 713         EvLinkType type;
 714         char *msg = NULL;
 715         char *page_label;
 716
 717         type = ev_link_get_link_type (link);
 718
 719         switch (type) {
 720                 case EV_LINK_TYPE_TITLE:
 721                         if (ev_link_get_title (link))
 722                                 msg = g_strdup (ev_link_get_title (link));
 723                         break;
 724                 case EV_LINK_TYPE_PAGE:
 725                         page_label = ev_page_cache_get_page_label (view->page_cache, ev_link_get_page (link));
 726                         msg = g_strdup_printf (_("Go to page %s"), page_label);
 727                         g_free (page_label);
 728                         break;
 729                 case EV_LINK_TYPE_EXTERNAL_URI:
 730                         msg = g_strdup (ev_link_get_uri (link));
 731                         break;
 732                 default:
 733                         break;
 734         }
 735
 736         return msg;
 737 }
 738
 739 static void
 740 ev_view_set_status (EvView *view, const char *message)
 741 {
 742         g_return_if_fail (EV_IS_VIEW (view));
 743
 744         if (message != view->status) {
 745                 g_free (view->status);
 746                 view->status = g_strdup (message);
 747                 g_object_notify (G_OBJECT (view), "status");
 748         }
 749 }
 750
 751 static void
 752 ev_view_set_find_status (EvView *view, const char *message)
 753 {
 754         g_return_if_fail (EV_IS_VIEW (view));
 755
 756         g_free (view->find_status);
 757         view->find_status = g_strdup (message);
 758         g_object_notify (G_OBJECT (view), "find-status");
 759 }
 760
 761 static GdkCursor *
 762 ev_view_create_invisible_cursor(void)
 763 {
 764        GdkBitmap *empty;
 765        GdkColor black = { 0, 0, 0, 0 };
 766        static char bits[] = { 0x00 };
 767
 768        empty = gdk_bitmap_create_from_data (NULL, bits, 1, 1);
 769
 770        return gdk_cursor_new_from_pixmap (empty, empty, &black, &black, 0, 0);
 771 }
 772
 773 static void
 774 ev_view_set_cursor (EvView *view, EvViewCursor new_cursor)
 775 {
 776         GdkCursor *cursor = NULL;
 777         GdkDisplay *display;
 778         GtkWidget *widget;
 779
 780         if (view->cursor == new_cursor) {
 781                 return;
 782         }
 783
 784         widget = gtk_widget_get_toplevel (GTK_WIDGET (view));
 785         display = gtk_widget_get_display (widget);
 786         view->cursor = new_cursor;
 787
 788         switch (new_cursor) {
 789                 case EV_VIEW_CURSOR_NORMAL:
 790                         gdk_window_set_cursor (widget->window, NULL);
 791                         break;
 792                 case EV_VIEW_CURSOR_LINK:
 793                         cursor = gdk_cursor_new_for_display (display, GDK_HAND2);
 794                         break;
 795                 case EV_VIEW_CURSOR_WAIT:
 796                         cursor = gdk_cursor_new_for_display (display, GDK_WATCH);
 797                         break;
 798                 case EV_VIEW_CURSOR_HIDDEN:
 799                         cursor = ev_view_create_invisible_cursor ();
 800                         break;
 801
 802         }
 803
 804         if (cursor) {
 805                 gdk_window_set_cursor (widget->window, cursor);
 806                 gdk_cursor_unref (cursor);
 807                 gdk_flush();
 808         }
 809 }
 810
 811
 812 static void
 813 find_page_at_location (EvView  *view,
 814                        gdouble  x,
 815                        gdouble  y,
 816                        gint    *page,
 817                        gint    *x_offset,
 818                        gint    *y_offset)
 819 {
 820         GtkBorder border;
 821         gint width, height;
 822
 823         ev_page_cache_get_size (view->page_cache,
 824                                 view->current_page,
 825                                 view->scale,
 826                                 &width, &height);
 827         ev_document_misc_get_page_border_size (width, height, &border);
 828
 829         x -= (border.left + view->spacing);
 830         y -= (border.top + view->spacing);
 831
 832         if ((x < 0) || (y < 0) ||
 833             (x >= width) || (y >= height)) {
 834                 *page = -1;
 835                 return;
 836         }
 837         *page = view->current_page;
 838         *x_offset = (gint) x;
 839         *y_offset = (gint) y;
 840 }
 841
 842 static EvLink *
 843 get_link_at_location (EvView  *view,
 844                       gdouble  x,
 845                       gdouble  y)
 846 {
 847         gint page;
 848         gint x_offset, y_offset;
 849         GList *link_mapping;
 850
 851         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
 852         if (page == -1)
 853                 return NULL;
 854
 855         link_mapping = ev_pixbuf_cache_get_link_mapping (view->pixbuf_cache, page);
 856
 857         return ev_link_mapping_find (link_mapping, x_offset /view->scale, y_offset /view->scale);
 858 }
 859
 860
 861 static gboolean
 862 ev_view_motion_notify_event (GtkWidget      *widget,
 863                              GdkEventMotion *event)
 864 {
 865         EvView *view = EV_VIEW (widget);
 866
 867         if (view->pressed_button > 0) {
 868                 GdkRectangle selection;
 869
 870                 view->has_selection = TRUE;
 871                 selection.x = MIN (view->selection_start.x, event->x);
 872                 selection.y = MIN (view->selection_start.y, event->y);
 873                 selection.width = ABS (view->selection_start.x - event->x) + 1;
 874                 selection.height = ABS (view->selection_start.y - event->y) + 1;
 875                 view_rect_to_doc_rect (view, &selection, &view->selection);
 876
 877                 gtk_widget_queue_draw (widget);
 878         } else if (view->document) {
 879                 EvLink *link;
 880
 881                 link = get_link_at_location (view, event->x, event->y);
 882                 if (link) {
 883                         char *msg;
 884
 885                         msg = status_message_from_link (view, link);
 886                         ev_view_set_status (view, msg);
 887                         ev_view_set_cursor (view, EV_VIEW_CURSOR_LINK);
 888                         g_free (msg);
 889                 } else {
 890                         ev_view_set_status (view, NULL);
 891                         if (view->cursor == EV_VIEW_CURSOR_LINK) {
 892                                 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
 893                         }
 894                 }
 895         }
 896
 897         return TRUE;
 898 }
 899
 900 static gboolean
 901 ev_view_button_release_event (GtkWidget      *widget,
 902                               GdkEventButton *event)
 903 {
 904         EvView *view = EV_VIEW (widget);
 905
 906         view->pressed_button = -1;
 907
 908         if (view->has_selection) {
 909                 ev_view_update_primary_selection (view);
 910         } else if (view->document) {
 911                 EvLink *link;
 912
 913                 link = get_link_at_location (view, event->x, event->y);
 914                 if (link) {
 915                         ev_view_go_to_link (view, link);
 916                 }
 917         }
 918
 919         return FALSE;
 920 }
 921
 922 static void
 923 on_adjustment_value_changed (GtkAdjustment  *adjustment,
 924                              EvView *view)
 925 {
 926         view_update_adjustments (view);
 927 }
 928
 929 static void
 930 set_scroll_adjustment (EvView *view,
 931                        GtkOrientation  orientation,
 932                        GtkAdjustment  *adjustment)
 933 {
 934         GtkAdjustment **to_set;
 935
 936         if (orientation == GTK_ORIENTATION_HORIZONTAL)
 937                 to_set = &view->hadjustment;
 938         else
 939                 to_set = &view->vadjustment;
 940
 941         if (*to_set != adjustment) {
 942                 if (*to_set) {
 943                         g_signal_handlers_disconnect_by_func (*to_set,
 944                                                               (gpointer) on_adjustment_value_changed,
 945                                                               view);
 946                         g_object_unref (*to_set);
 947                 }
 948
 949                 *to_set = adjustment;
 950                 view_set_adjustment_values (view, orientation);
 951
 952                 if (*to_set) {
 953                         g_object_ref (*to_set);
 954                         g_signal_connect (*to_set, "value_changed",
 955                                           G_CALLBACK (on_adjustment_value_changed), view);
 956                 }
 957         }
 958 }
 959
 960 static void
 961 ev_view_set_scroll_adjustments (EvView *view,
 962                                 GtkAdjustment  *hadjustment,
 963                                 GtkAdjustment  *vadjustment)
 964 {
 965         set_scroll_adjustment (view, GTK_ORIENTATION_HORIZONTAL, hadjustment);
 966         set_scroll_adjustment (view, GTK_ORIENTATION_VERTICAL, vadjustment);
 967
 968         view_update_adjustments (view);
 969 }
 970
 971 static void
 972 add_scroll_binding_keypad (GtkBindingSet  *binding_set,
 973                            guint           keyval,
 974                            GtkScrollType   scroll,
 975                            gboolean        horizontal)
 976 {
 977   guint keypad_keyval = keyval - GDK_Left + GDK_KP_Left;
 978
 979   gtk_binding_entry_add_signal (binding_set, keyval, 0,
 980                                 "scroll_view", 2,
 981                                 GTK_TYPE_SCROLL_TYPE, scroll,
 982                                 G_TYPE_BOOLEAN, horizontal);
 983   gtk_binding_entry_add_signal (binding_set, keypad_keyval, 0,
 984                                 "scroll_view", 2,
 985                                 GTK_TYPE_SCROLL_TYPE, scroll,
 986                                 G_TYPE_BOOLEAN, horizontal);
 987 }
 988
 989 static void
 990 add_scroll_binding_shifted (GtkBindingSet  *binding_set,
 991                             guint           keyval,
 992                             GtkScrollType   scroll_normal,
 993                             GtkScrollType   scroll_shifted,
 994                             gboolean        horizontal)
 995 {
 996   gtk_binding_entry_add_signal (binding_set, keyval, 0,
 997                                 "scroll_view", 2,
 998                                 GTK_TYPE_SCROLL_TYPE, scroll_normal,
 999                                 G_TYPE_BOOLEAN, horizontal);
1000   gtk_binding_entry_add_signal (binding_set, keyval, GDK_SHIFT_MASK,
1001                                 "scroll_view", 2,
1002                                 GTK_TYPE_SCROLL_TYPE, scroll_shifted,
1003                                 G_TYPE_BOOLEAN, horizontal);
1004 }
1005
1006 static void
1007 ev_view_jump (EvView        *view,
1008               GtkScrollType  scroll)
1009 {
1010         GtkAdjustment *adjustment;
1011         double value, increment;
1012         gboolean first_page = FALSE;
1013         gboolean last_page = FALSE;
1014
1015         /* Assign values for increment and vertical adjustment */
1016         adjustment = view->vadjustment;
1017         increment = adjustment->page_size * 0.75;
1018         value = adjustment->value;
1019
1020         /* Assign boolean for first and last page */
1021         if (view->current_page == 0)
1022                 first_page = TRUE;
1023         if (view->current_page == ev_page_cache_get_n_pages (view->page_cache) - 1)
1024                 last_page = TRUE;
1025
1026         switch (scroll) {
1027                 case EV_SCROLL_PAGE_BACKWARD:
1028                         /* Do not jump backwards if at the first page */
1029                         if (value == (adjustment->lower) && first_page) {
1030                                 /* Do nothing */
1031                                 /* At the top of a page, assign the upper bound limit of previous page */
1032                         } else if (value == (adjustment->lower)) {
1033                                 value = adjustment->upper - adjustment->page_size;
1034                                 ev_page_cache_set_current_page (view->page_cache, view->current_page - 1);
1035                                 /* Jump to the top */
1036                         } else {
1037                                 value = MAX (value - increment, adjustment->lower);
1038                         }
1039                         break;
1040                 case EV_SCROLL_PAGE_FORWARD:
1041                         /* Do not jump forward if at the last page */
1042                         if (value == (adjustment->upper - adjustment->page_size) && last_page) {
1043                                 /* Do nothing */
1044                         /* At the bottom of a page, assign the lower bound limit of next page */
1045                         } else if (value == (adjustment->upper - adjustment->page_size)) {
1046                                 value = 0;
1047                                 ev_page_cache_set_current_page (view->page_cache, view->current_page + 1);
1048                         /* Jump to the bottom */
1049                         } else {
1050                                 value = MIN (value + increment, adjustment->upper - adjustment->page_size);
1051                         }
1052                         break;
1053                 default:
1054                         break;
1055         }
1056
1057         gtk_adjustment_set_value (adjustment, value);
1058 }
1059
1060 static void
1061 ev_view_scroll_view (EvView *view,
1062                      GtkScrollType scroll,
1063                      gboolean horizontal)
1064 {
1065         if (scroll == GTK_SCROLL_PAGE_BACKWARD) {
1066                 ev_page_cache_prev_page (view->page_cache);
1067         } else if (scroll == GTK_SCROLL_PAGE_FORWARD) {
1068                 ev_page_cache_next_page (view->page_cache);
1069         } else if (scroll == EV_SCROLL_PAGE_BACKWARD || scroll == EV_SCROLL_PAGE_FORWARD) {
1070                 ev_view_jump (view, scroll);
1071         } else {
1072                 GtkAdjustment *adjustment;
1073                 double value;
1074
1075                 if (horizontal) {
1076                         adjustment = view->hadjustment;
1077                 } else {
1078                         adjustment = view->vadjustment;
1079                 }
1080
1081                 value = adjustment->value;
1082
1083                 switch (scroll) {
1084                         case GTK_SCROLL_STEP_BACKWARD:
1085                                 value -= adjustment->step_increment;
1086                                 break;
1087                         case GTK_SCROLL_STEP_FORWARD:
1088                                 value += adjustment->step_increment;
1089                                 break;
1090                         default:
1091                                 break;
1092                 }
1093
1094                 value = CLAMP (value, adjustment->lower,
1095                                adjustment->upper - adjustment->page_size);
1096
1097                 gtk_adjustment_set_value (adjustment, value);
1098         }
1099 }
1100
1101 static void
1102 ev_view_set_property (GObject *object,
1103                       guint prop_id,
1104                       const GValue *value,
1105                       GParamSpec *pspec)
1106 {
1107         switch (prop_id)
1108         {
1109                 /* Read only */
1110                 case PROP_STATUS:
1111                 case PROP_FIND_STATUS:
1112                         break;
1113         }
1114 }
1115
1116 static void
1117 ev_view_get_property (GObject *object,
1118                       guint prop_id,
1119                       GValue *value,
1120                       GParamSpec *pspec)
1121 {
1122         EvView *view = EV_VIEW (object);
1123
1124         switch (prop_id)
1125         {
1126                 case PROP_STATUS:
1127                         g_value_set_string (value, view->status);
1128                         break;
1129                 case PROP_FIND_STATUS:
1130                         g_value_set_string (value, view->status);
1131                         break;
1132         }
1133 }
1134
1135 static void
1136 ev_view_class_init (EvViewClass *class)
1137 {
1138         GObjectClass *object_class = G_OBJECT_CLASS (class);
1139         GtkObjectClass *gtk_object_class = GTK_OBJECT_CLASS (class);
1140         GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
1141         GtkBindingSet *binding_set;
1142
1143         object_class->finalize = ev_view_finalize;
1144         object_class->set_property = ev_view_set_property;
1145         object_class->get_property = ev_view_get_property;
1146
1147         widget_class->expose_event = ev_view_expose_event;
1148         widget_class->button_press_event = ev_view_button_press_event;
1149         widget_class->motion_notify_event = ev_view_motion_notify_event;
1150         widget_class->button_release_event = ev_view_button_release_event;
1151         widget_class->size_request = ev_view_size_request;
1152         widget_class->size_allocate = ev_view_size_allocate;
1153         widget_class->realize = ev_view_realize;
1154         widget_class->unrealize = ev_view_unrealize;
1155         gtk_object_class->destroy = ev_view_destroy;
1156
1157         class->set_scroll_adjustments = ev_view_set_scroll_adjustments;
1158         class->scroll_view = ev_view_scroll_view;
1159
1160         widget_class->set_scroll_adjustments_signal =  g_signal_new ("set-scroll-adjustments",
1161                                                                      G_OBJECT_CLASS_TYPE (object_class),
1162                                                                      G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1163                                                                      G_STRUCT_OFFSET (EvViewClass, set_scroll_adjustments),
1164                                                                      NULL, NULL,
1165                                                                      ev_marshal_VOID__OBJECT_OBJECT,
1166                                                                      G_TYPE_NONE, 2,
1167                                                                      GTK_TYPE_ADJUSTMENT,
1168                                                                      GTK_TYPE_ADJUSTMENT);
1169
1170         g_signal_new ("scroll_view",
1171                       G_TYPE_FROM_CLASS (object_class),
1172                       G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1173                       G_STRUCT_OFFSET (EvViewClass, scroll_view),
1174                       NULL, NULL,
1175                       ev_marshal_VOID__ENUM_BOOLEAN,
1176                       G_TYPE_NONE, 2,
1177                       GTK_TYPE_SCROLL_TYPE,
1178                       G_TYPE_BOOLEAN);
1179
1180         g_object_class_install_property (object_class,
1181                                          PROP_STATUS,
1182                                          g_param_spec_string ("status",
1183                                                               "Status Message",
1184                                                               "The status message",
1185                                                               NULL,
1186                                                               G_PARAM_READABLE));
1187
1188         g_object_class_install_property (object_class,
1189                                          PROP_FIND_STATUS,
1190                                          g_param_spec_string ("find-status",
1191                                                               "Find Status Message",
1192                                                               "The find status message",
1193                                                               NULL,
1194                                                               G_PARAM_READABLE));
1195
1196         binding_set = gtk_binding_set_by_class (class);
1197
1198         add_scroll_binding_keypad (binding_set, GDK_Left,  GTK_SCROLL_STEP_BACKWARD, TRUE);
1199         add_scroll_binding_keypad (binding_set, GDK_Right, GTK_SCROLL_STEP_FORWARD,  TRUE);
1200         add_scroll_binding_keypad (binding_set, GDK_Up,    GTK_SCROLL_STEP_BACKWARD, FALSE);
1201         add_scroll_binding_keypad (binding_set, GDK_Down,  GTK_SCROLL_STEP_FORWARD,  FALSE);
1202
1203         add_scroll_binding_keypad (binding_set, GDK_Page_Up,   GTK_SCROLL_PAGE_BACKWARD, FALSE);
1204         add_scroll_binding_keypad (binding_set, GDK_Page_Down, GTK_SCROLL_PAGE_FORWARD,  FALSE);
1205
1206         add_scroll_binding_shifted (binding_set, GDK_space, EV_SCROLL_PAGE_FORWARD, EV_SCROLL_PAGE_BACKWARD, FALSE);
1207         add_scroll_binding_shifted (binding_set, GDK_BackSpace, EV_SCROLL_PAGE_BACKWARD, EV_SCROLL_PAGE_FORWARD, FALSE);
1208 }
1209
1210 static void
1211 ev_view_init (EvView *view)
1212 {
1213         GTK_WIDGET_SET_FLAGS (view, GTK_CAN_FOCUS);
1214
1215         view->spacing = 10;
1216         view->scale = 1.0;
1217         view->current_page = 0;
1218         view->pressed_button = -1;
1219         view->cursor = EV_VIEW_CURSOR_NORMAL;
1220 }
1221
1222 static void
1223 update_find_status_message (EvView *view)
1224 {
1225         char *message;
1226
1227 //      g_mutex_lock (EV_DOC_MUTEX);
1228         if (view->current_page == view->find_page) {
1229                 int results;
1230
1231 //              g_mutex_lock (EV_DOC_MUTEX);
1232                 results = ev_document_find_get_n_results
1233                                 (EV_DOCUMENT_FIND (view->document),
1234                                  view->current_page);
1235 //              g_mutex_unlock (EV_DOC_MUTEX);
1236                 /* TRANS: Sometimes this could be better translated as
1237                    "%d hit(s) on this page".  Therefore this string
1238                    contains plural cases. */
1239                 message = g_strdup_printf (ngettext ("%d found on this page",
1240                                                      "%d found on this page",
1241                                                      results),
1242                                            results);
1243         } else {
1244                 double percent;
1245
1246                 g_mutex_lock (EV_DOC_MUTEX);
1247                 percent = ev_document_find_get_progress
1248                                 (EV_DOCUMENT_FIND (view->document));
1249                 g_mutex_unlock (EV_DOC_MUTEX);
1250                 if (percent >= (1.0 - 1e-10)) {
1251                         message = g_strdup (_("Not found"));
1252                 } else {
1253                         message = g_strdup_printf (_("%3d%% remaining to search"),
1254                                                    (int) ((1.0 - percent) * 100));
1255                 }
1256
1257         }
1258 //      g_mutex_unlock (EV_DOC_MUTEX);
1259
1260         ev_view_set_find_status (view, message);
1261 //      g_free (message);
1262 }
1263
1264 #define MARGIN 5
1265
1266 static void
1267 ensure_rectangle_is_visible (EvView *view, GdkRectangle *rect)
1268 {
1269         GtkWidget *widget = GTK_WIDGET (view);
1270         GtkAdjustment *adjustment;
1271         int value;
1272
1273         adjustment = view->vadjustment;
1274
1275         if (rect->y < adjustment->value) {
1276                 value = MAX (adjustment->lower, rect->y - MARGIN);
1277                 gtk_adjustment_set_value (view->vadjustment, value);
1278         } else if (rect->y + rect->height >
1279                    adjustment->value + widget->allocation.height) {
1280                 value = MIN (adjustment->upper, rect->y + rect->height -
1281                              widget->allocation.height + MARGIN);
1282                 gtk_adjustment_set_value (view->vadjustment, value);
1283         }
1284
1285         adjustment = view->hadjustment;
1286
1287         if (rect->x < adjustment->value) {
1288                 value = MAX (adjustment->lower, rect->x - MARGIN);
1289                 gtk_adjustment_set_value (view->hadjustment, value);
1290         } else if (rect->x + rect->height >
1291                    adjustment->value + widget->allocation.width) {
1292                 value = MIN (adjustment->upper, rect->x + rect->width -
1293                              widget->allocation.width + MARGIN);
1294                 gtk_adjustment_set_value (view->hadjustment, value);
1295         }
1296 }
1297
1298 static void
1299 jump_to_find_result (EvView *view)
1300 {
1301         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
1302         EvRectangle rect;
1303         GdkRectangle view_rect;
1304         int n_results;
1305
1306         g_mutex_lock (EV_DOC_MUTEX);
1307         n_results = ev_document_find_get_n_results (find, view->current_page);
1308         g_mutex_unlock (EV_DOC_MUTEX);
1309
1310         if (n_results > view->find_result) {
1311                 g_mutex_lock (EV_DOC_MUTEX);
1312                 ev_document_find_get_result
1313                         (find, view->current_page, view->find_result, &rect);
1314                 g_mutex_unlock (EV_DOC_MUTEX);
1315
1316                 doc_rect_to_view_rect (view, &rect, &view_rect);
1317                 ensure_rectangle_is_visible (view, &view_rect);
1318         }
1319 }
1320
1321 static void
1322 jump_to_find_page (EvView *view)
1323 {
1324         int n_pages, i;
1325
1326         n_pages = ev_page_cache_get_n_pages (view->page_cache);
1327
1328         for (i = 0; i < n_pages; i++) {
1329                 int has_results;
1330                 int page;
1331
1332                 page = i + view->find_page;
1333                 if (page >= n_pages) {
1334                         page = page - n_pages;
1335                 }
1336
1337                 //              g_mutex_lock (EV_DOC_MUTEX);
1338                 has_results = ev_document_find_page_has_results
1339                                 (EV_DOCUMENT_FIND (view->document), page);
1340                 if (has_results == -1) {
1341                         view->find_page = page;
1342                         break;
1343                 } else if (has_results == 1) {
1344                         ev_page_cache_set_current_page (view->page_cache, page);
1345                         jump_to_find_result (view);
1346                         break;
1347                 }
1348         }
1349 }
1350
1351 static void
1352 find_changed_cb (EvDocument *document, int page, EvView *view)
1353 {
1354         jump_to_find_page (view);
1355         jump_to_find_result (view);
1356         update_find_status_message (view);
1357
1358         if (view->current_page == page)
1359                 gtk_widget_queue_draw (GTK_WIDGET (view));
1360 }
1361 /*** Public API ***/
1362
1363 GtkWidget*
1364 ev_view_new (void)
1365 {
1366         return g_object_new (EV_TYPE_VIEW, NULL);
1367 }
1368
1369 static void
1370 job_finished_cb (EvPixbufCache *pixbuf_cache,
1371                  EvView        *view)
1372 {
1373         gtk_widget_queue_draw (GTK_WIDGET (view));
1374 }
1375
1376
1377 static void
1378 page_changed_cb (EvPageCache *page_cache,
1379                  int          new_page,
1380                  EvView      *view)
1381 {
1382         int old_page = view->current_page;
1383         int old_width, old_height;
1384         int new_width, new_height;
1385
1386         if (old_page == new_page)
1387                 return;
1388
1389         ev_page_cache_get_size (page_cache,
1390                                 old_page,
1391                                 view->scale,
1392                                 &old_width, &old_height);
1393         ev_page_cache_get_size (page_cache,
1394                                 new_page,
1395                                 view->scale,
1396                                 &new_width, &new_height);
1397
1398         if (view->cursor != EV_VIEW_CURSOR_HIDDEN) {
1399                 //ev_view_set_cursor (view, EV_VIEW_CURSOR_WAIT);
1400         }
1401
1402         view->current_page = new_page;
1403         view->has_selection = FALSE;
1404
1405         ev_pixbuf_cache_set_page_range (view->pixbuf_cache,
1406                                         view->current_page,
1407                                         view->current_page,
1408                                         view->scale);
1409
1410         if (new_width != old_width || new_height != old_height)
1411                 gtk_widget_queue_resize (GTK_WIDGET (view));
1412         else
1413                 gtk_widget_queue_draw (GTK_WIDGET (view));
1414
1415         gtk_adjustment_set_value (view->vadjustment,
1416                                   view->vadjustment->lower);
1417
1418         if (EV_IS_DOCUMENT_FIND (view->document)) {
1419                 view->find_page = new_page;
1420                 view->find_result = 0;
1421                 update_find_status_message (view);
1422         }
1423 }
1424
1425 void
1426 ev_view_set_document (EvView     *view,
1427                       EvDocument *document)
1428 {
1429         g_return_if_fail (EV_IS_VIEW (view));
1430
1431         if (document != view->document) {
1432                 if (view->document) {
1433                         g_signal_handlers_disconnect_by_func (view->document,
1434                                                               find_changed_cb,
1435                                                               view);
1436                         g_object_unref (view->document);
1437                         view->page_cache = NULL;
1438
1439                 }
1440
1441                 view->document = document;
1442                 view->find_page = 0;
1443                 view->find_result = 0;
1444
1445                 if (view->document) {
1446                         g_object_ref (view->document);
1447                         if (EV_IS_DOCUMENT_FIND (view->document)) {
1448                                 g_signal_connect (view->document,
1449                                                   "find_changed",
1450                                                   G_CALLBACK (find_changed_cb),
1451                                                   view);
1452                         }
1453                         view->page_cache = ev_document_get_page_cache (view->document);
1454                         g_signal_connect (view->page_cache, "page-changed", G_CALLBACK (page_changed_cb), view);
1455                         view->pixbuf_cache = ev_pixbuf_cache_new (view->document);
1456                         g_signal_connect (view->pixbuf_cache, "job-finished", G_CALLBACK (job_finished_cb), view);
1457                 }
1458
1459                 gtk_widget_queue_resize (GTK_WIDGET (view));
1460         }
1461 }
1462
1463 int
1464 ev_view_get_page        (EvView     *view)
1465 {
1466         return view->current_page;
1467 }
1468
1469 static void
1470 go_to_link (EvView *view, EvLink *link)
1471 {
1472         EvLinkType type;
1473         const char *uri;
1474         int page;
1475
1476         type = ev_link_get_link_type (link);
1477
1478         switch (type) {
1479                 case EV_LINK_TYPE_TITLE:
1480                         break;
1481                 case EV_LINK_TYPE_PAGE:
1482                         page = ev_link_get_page (link);
1483                         ev_page_cache_set_current_page (view->page_cache, page);
1484                         break;
1485                 case EV_LINK_TYPE_EXTERNAL_URI:
1486                         uri = ev_link_get_uri (link);
1487                         gnome_vfs_url_show (uri);
1488                         break;
1489         }
1490 }
1491
1492 void
1493 ev_view_go_to_link (EvView *view, EvLink *link)
1494 {
1495         go_to_link (view, link);
1496 }
1497
1498 static void
1499 ev_view_zoom (EvView   *view,
1500               double    factor,
1501               gboolean  relative)
1502 {
1503         double scale;
1504
1505         if (relative)
1506                 scale = view->scale * factor;
1507         else
1508                 scale = factor;
1509
1510         scale = CLAMP (scale, MIN_SCALE, MAX_SCALE);
1511
1512         view->scale = scale;
1513         gtk_widget_queue_resize (GTK_WIDGET (view));
1514 }
1515
1516 void
1517 ev_view_zoom_in (EvView *view)
1518 {
1519         view->width = view->height = -1;
1520         ev_view_zoom (view, ZOOM_IN_FACTOR, TRUE);
1521 }
1522
1523 void
1524 ev_view_zoom_out (EvView *view)
1525 {
1526         view->width = view->height = -1;
1527         ev_view_zoom (view, ZOOM_OUT_FACTOR, TRUE);
1528 }
1529
1530 static double
1531 size_to_zoom_factor (EvView *view, int width, int height)
1532 {
1533         int doc_width, doc_height;
1534         double scale, scale_w, scale_h;
1535         GtkBorder border;
1536
1537         doc_width = doc_height = 0;
1538         scale = scale_w = scale_h = 1.0;
1539         ev_page_cache_get_size (view->page_cache,
1540                                 view->current_page,
1541                                 view->scale,
1542                                 &doc_width,
1543                                 &doc_height);
1544
1545         /* FIXME: The border size isn't constant.  Ugh.  Still, if we have extra
1546          * space, we just cut it from the border */
1547         ev_document_misc_get_page_border_size (doc_width, doc_height, &border);
1548
1549         if (doc_width == 0 && doc_height == 0) {
1550                 return 0;
1551         }
1552
1553         if (width >= 0) {
1554                 int target_width;
1555
1556                 target_width = width - (view->spacing * 2 + border.left + border.right);
1557                 scale = scale_w = (double)target_width * view->scale / doc_width;
1558         }
1559
1560         if (height >= 0) {
1561                 int target_height;
1562
1563                 target_height = height - (view->spacing * 2 + border.top + border.bottom);
1564                 scale = scale_h = (double)target_height * view->scale / doc_height;
1565         }
1566
1567         if (width >= 0 && height >= 0) {
1568                 scale = (scale_w < scale_h) ? scale_w : scale_h;
1569         }
1570
1571         return scale;
1572 }
1573
1574 void
1575 ev_view_set_size (EvView     *view,
1576                   int         width,
1577                   int         height)
1578 {
1579         double factor;
1580
1581         if (!view->document)
1582                 return;
1583
1584         if (view->width != width ||
1585             view->height != height) {
1586                 view->width = width;
1587                 view->height = height;
1588                 factor = size_to_zoom_factor (view, width, height);
1589                 ev_view_zoom (view, factor, FALSE);
1590                 gtk_widget_queue_resize (GTK_WIDGET (view));
1591         }
1592 }
1593
1594 const char *
1595 ev_view_get_status (EvView *view)
1596 {
1597         g_return_val_if_fail (EV_IS_VIEW (view), NULL);
1598
1599         return view->status;
1600 }
1601
1602 const char *
1603 ev_view_get_find_status (EvView *view)
1604 {
1605         g_return_val_if_fail (EV_IS_VIEW (view), NULL);
1606
1607         return view->find_status;
1608 }
1609
1610 gboolean
1611 ev_view_can_find_next (EvView *view)
1612 {
1613         int n_results = 0;
1614
1615         if (EV_IS_DOCUMENT_FIND (view->document)) {
1616                 EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
1617
1618                 g_mutex_lock (EV_DOC_MUTEX);
1619                 n_results = ev_document_find_get_n_results (find, view->current_page);
1620                 g_mutex_unlock (EV_DOC_MUTEX);
1621         }
1622
1623         return n_results > 0;
1624 }
1625
1626 void
1627 ev_view_find_next (EvView *view)
1628 {
1629         EvPageCache *page_cache;
1630         int n_results, n_pages;
1631         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
1632
1633         page_cache = ev_document_get_page_cache (view->document);
1634         g_mutex_lock (EV_DOC_MUTEX);
1635         n_results = ev_document_find_get_n_results (find, view->current_page);
1636         g_mutex_unlock (EV_DOC_MUTEX);
1637
1638         n_pages = ev_page_cache_get_n_pages (page_cache);
1639
1640         view->find_result++;
1641
1642         if (view->find_result >= n_results) {
1643                 view->find_result = 0;
1644                 view->find_page++;
1645
1646                 if (view->find_page >= n_pages) {
1647                         view->find_page = 0;
1648                 }
1649
1650                 jump_to_find_page (view);
1651         } else {
1652                 jump_to_find_result (view);
1653                 gtk_widget_queue_draw (GTK_WIDGET (view));
1654         }
1655 }
1656
1657 void
1658 ev_view_find_previous (EvView *view)
1659 {
1660         int n_results, n_pages;
1661         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
1662         EvPageCache *page_cache;
1663
1664         page_cache = ev_document_get_page_cache (view->document);
1665
1666         g_mutex_lock (EV_DOC_MUTEX);
1667         n_results = ev_document_find_get_n_results (find, view->current_page);
1668         g_mutex_unlock (EV_DOC_MUTEX);
1669
1670         n_pages = ev_page_cache_get_n_pages (page_cache);
1671
1672         view->find_result--;
1673
1674         if (view->find_result < 0) {
1675                 view->find_result = 0;
1676                 view->find_page--;
1677
1678                 if (view->find_page < 0) {
1679                         view->find_page = n_pages - 1;
1680                 }
1681
1682                 jump_to_find_page (view);
1683         } else {
1684                 jump_to_find_result (view);
1685                 gtk_widget_queue_draw (GTK_WIDGET (view));
1686         }
1687 }
1688 void
1689 ev_view_hide_cursor (EvView *view)
1690 {
1691        ev_view_set_cursor (view, EV_VIEW_CURSOR_HIDDEN);
1692 }
1693
1694 void
1695 ev_view_show_cursor (EvView *view)
1696 {
1697        ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
1698 }