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         if (!ev_document_can_get_text (ev_view->document)) {
 624                 return;
 625         }
 626
 627         g_mutex_lock (EV_DOC_MUTEX);
 628         text = ev_document_get_text (ev_view->document,
 629                                      ev_view->current_page,
 630                                      &ev_view->selection);
 631         g_mutex_unlock (EV_DOC_MUTEX);
 632
 633         clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view),
 634                                               GDK_SELECTION_CLIPBOARD);
 635         gtk_clipboard_set_text (clipboard, text, -1);
 636         g_free (text);
 637 }
 638
 639 static void
 640 ev_view_primary_get_cb (GtkClipboard     *clipboard,
 641                         GtkSelectionData *selection_data,
 642                         guint             info,
 643                         gpointer          data)
 644 {
 645         EvView *ev_view = EV_VIEW (data);
 646         char *text;
 647
 648         if (!ev_document_can_get_text (ev_view->document)) {
 649                 return;
 650         }
 651
 652         g_mutex_lock (EV_DOC_MUTEX);
 653         text = ev_document_get_text (ev_view->document,
 654                                      ev_view->current_page,
 655                                      &ev_view->selection);
 656         g_mutex_unlock (EV_DOC_MUTEX);
 657         gtk_selection_data_set_text (selection_data, text, -1);
 658 }
 659
 660 static void
 661 ev_view_primary_clear_cb (GtkClipboard *clipboard,
 662                           gpointer      data)
 663 {
 664         EvView *ev_view = EV_VIEW (data);
 665
 666         ev_view->has_selection = FALSE;
 667 }
 668
 669 static void
 670 ev_view_update_primary_selection (EvView *ev_view)
 671 {
 672         GtkClipboard *clipboard;
 673
 674         clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view),
 675                                               GDK_SELECTION_PRIMARY);
 676
 677         if (ev_view->has_selection) {
 678                 if (!gtk_clipboard_set_with_owner (clipboard,
 679                                                    targets,
 680                                                    G_N_ELEMENTS (targets),
 681                                                    ev_view_primary_get_cb,
 682                                                    ev_view_primary_clear_cb,
 683                                                    G_OBJECT (ev_view)))
 684                         ev_view_primary_clear_cb (clipboard, ev_view);
 685         } else {
 686                 if (gtk_clipboard_get_owner (clipboard) == G_OBJECT (ev_view))
 687                         gtk_clipboard_clear (clipboard);
 688         }
 689 }
 690
 691 static gboolean
 692 ev_view_button_press_event (GtkWidget      *widget,
 693                             GdkEventButton *event)
 694 {
 695         EvView *view = EV_VIEW (widget);
 696
 697         if (!GTK_WIDGET_HAS_FOCUS (widget)) {
 698                 gtk_widget_grab_focus (widget);
 699         }
 700
 701         view->pressed_button = event->button;
 702
 703         switch (event->button) {
 704                 case 1:
 705                         if (view->has_selection) {
 706                                 view->has_selection = FALSE;
 707                                 gtk_widget_queue_draw (widget);
 708                         }
 709
 710                         view->selection_start.x = event->x;
 711                         view->selection_start.y = event->y;
 712                         break;
 713         }
 714
 715         return TRUE;
 716 }
 717
 718 static char *
 719 status_message_from_link (EvView *view, EvLink *link)
 720 {
 721         EvLinkType type;
 722         char *msg = NULL;
 723         char *page_label;
 724
 725         type = ev_link_get_link_type (link);
 726
 727         switch (type) {
 728                 case EV_LINK_TYPE_TITLE:
 729                         if (ev_link_get_title (link))
 730                                 msg = g_strdup (ev_link_get_title (link));
 731                         break;
 732                 case EV_LINK_TYPE_PAGE:
 733                         page_label = ev_page_cache_get_page_label (view->page_cache, ev_link_get_page (link));
 734                         msg = g_strdup_printf (_("Go to page %s"), page_label);
 735                         g_free (page_label);
 736                         break;
 737                 case EV_LINK_TYPE_EXTERNAL_URI:
 738                         msg = g_strdup (ev_link_get_uri (link));
 739                         break;
 740                 default:
 741                         break;
 742         }
 743
 744         return msg;
 745 }
 746
 747 static void
 748 ev_view_set_status (EvView *view, const char *message)
 749 {
 750         g_return_if_fail (EV_IS_VIEW (view));
 751
 752         if (message != view->status) {
 753                 g_free (view->status);
 754                 view->status = g_strdup (message);
 755                 g_object_notify (G_OBJECT (view), "status");
 756         }
 757 }
 758
 759 static void
 760 ev_view_set_find_status (EvView *view, const char *message)
 761 {
 762         g_return_if_fail (EV_IS_VIEW (view));
 763
 764         g_free (view->find_status);
 765         view->find_status = g_strdup (message);
 766         g_object_notify (G_OBJECT (view), "find-status");
 767 }
 768
 769 static GdkCursor *
 770 ev_view_create_invisible_cursor(void)
 771 {
 772        GdkBitmap *empty;
 773        GdkColor black = { 0, 0, 0, 0 };
 774        static char bits[] = { 0x00 };
 775
 776        empty = gdk_bitmap_create_from_data (NULL, bits, 1, 1);
 777
 778        return gdk_cursor_new_from_pixmap (empty, empty, &black, &black, 0, 0);
 779 }
 780
 781 static void
 782 ev_view_set_cursor (EvView *view, EvViewCursor new_cursor)
 783 {
 784         GdkCursor *cursor = NULL;
 785         GdkDisplay *display;
 786         GtkWidget *widget;
 787
 788         if (view->cursor == new_cursor) {
 789                 return;
 790         }
 791
 792         widget = gtk_widget_get_toplevel (GTK_WIDGET (view));
 793         display = gtk_widget_get_display (widget);
 794         view->cursor = new_cursor;
 795
 796         switch (new_cursor) {
 797                 case EV_VIEW_CURSOR_NORMAL:
 798                         gdk_window_set_cursor (widget->window, NULL);
 799                         break;
 800                 case EV_VIEW_CURSOR_LINK:
 801                         cursor = gdk_cursor_new_for_display (display, GDK_HAND2);
 802                         break;
 803                 case EV_VIEW_CURSOR_WAIT:
 804                         cursor = gdk_cursor_new_for_display (display, GDK_WATCH);
 805                         break;
 806                 case EV_VIEW_CURSOR_HIDDEN:
 807                         cursor = ev_view_create_invisible_cursor ();
 808                         break;
 809
 810         }
 811
 812         if (cursor) {
 813                 gdk_window_set_cursor (widget->window, cursor);
 814                 gdk_cursor_unref (cursor);
 815                 gdk_flush();
 816         }
 817 }
 818
 819
 820 static void
 821 find_page_at_location (EvView  *view,
 822                        gdouble  x,
 823                        gdouble  y,
 824                        gint    *page,
 825                        gint    *x_offset,
 826                        gint    *y_offset)
 827 {
 828         GtkBorder border;
 829         gint width, height;
 830
 831         ev_page_cache_get_size (view->page_cache,
 832                                 view->current_page,
 833                                 view->scale,
 834                                 &width, &height);
 835         ev_document_misc_get_page_border_size (width, height, &border);
 836
 837         x -= (border.left + view->spacing);
 838         y -= (border.top + view->spacing);
 839
 840         if ((x < 0) || (y < 0) ||
 841             (x >= width) || (y >= height)) {
 842                 *page = -1;
 843                 return;
 844         }
 845         *page = view->current_page;
 846         *x_offset = (gint) x;
 847         *y_offset = (gint) y;
 848 }
 849
 850 static EvLink *
 851 get_link_at_location (EvView  *view,
 852                       gdouble  x,
 853                       gdouble  y)
 854 {
 855         gint page;
 856         gint x_offset, y_offset;
 857         GList *link_mapping;
 858
 859         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
 860         if (page == -1)
 861                 return NULL;
 862
 863         link_mapping = ev_pixbuf_cache_get_link_mapping (view->pixbuf_cache, page);
 864
 865         return ev_link_mapping_find (link_mapping, x_offset /view->scale, y_offset /view->scale);
 866 }
 867
 868
 869 static gboolean
 870 ev_view_motion_notify_event (GtkWidget      *widget,
 871                              GdkEventMotion *event)
 872 {
 873         EvView *view = EV_VIEW (widget);
 874
 875         if (view->pressed_button > 0) {
 876                 GdkRectangle selection;
 877
 878                 view->has_selection = TRUE;
 879                 selection.x = MIN (view->selection_start.x, event->x);
 880                 selection.y = MIN (view->selection_start.y, event->y);
 881                 selection.width = ABS (view->selection_start.x - event->x) + 1;
 882                 selection.height = ABS (view->selection_start.y - event->y) + 1;
 883                 view_rect_to_doc_rect (view, &selection, &view->selection);
 884
 885                 gtk_widget_queue_draw (widget);
 886         } else if (view->document) {
 887                 EvLink *link;
 888
 889                 link = get_link_at_location (view, event->x, event->y);
 890                 if (link) {
 891                         char *msg;
 892
 893                         msg = status_message_from_link (view, link);
 894                         ev_view_set_status (view, msg);
 895                         ev_view_set_cursor (view, EV_VIEW_CURSOR_LINK);
 896                         g_free (msg);
 897                 } else {
 898                         ev_view_set_status (view, NULL);
 899                         if (view->cursor == EV_VIEW_CURSOR_LINK) {
 900                                 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
 901                         }
 902                 }
 903         }
 904
 905         return TRUE;
 906 }
 907
 908 static gboolean
 909 ev_view_button_release_event (GtkWidget      *widget,
 910                               GdkEventButton *event)
 911 {
 912         EvView *view = EV_VIEW (widget);
 913
 914         view->pressed_button = -1;
 915
 916         if (view->has_selection) {
 917                 ev_view_update_primary_selection (view);
 918         } else if (view->document) {
 919                 EvLink *link;
 920
 921                 link = get_link_at_location (view, event->x, event->y);
 922                 if (link) {
 923                         ev_view_go_to_link (view, link);
 924                 }
 925         }
 926
 927         return FALSE;
 928 }
 929
 930 static void
 931 on_adjustment_value_changed (GtkAdjustment  *adjustment,
 932                              EvView *view)
 933 {
 934         view_update_adjustments (view);
 935 }
 936
 937 static void
 938 set_scroll_adjustment (EvView *view,
 939                        GtkOrientation  orientation,
 940                        GtkAdjustment  *adjustment)
 941 {
 942         GtkAdjustment **to_set;
 943
 944         if (orientation == GTK_ORIENTATION_HORIZONTAL)
 945                 to_set = &view->hadjustment;
 946         else
 947                 to_set = &view->vadjustment;
 948
 949         if (*to_set != adjustment) {
 950                 if (*to_set) {
 951                         g_signal_handlers_disconnect_by_func (*to_set,
 952                                                               (gpointer) on_adjustment_value_changed,
 953                                                               view);
 954                         g_object_unref (*to_set);
 955                 }
 956
 957                 *to_set = adjustment;
 958                 view_set_adjustment_values (view, orientation);
 959
 960                 if (*to_set) {
 961                         g_object_ref (*to_set);
 962                         g_signal_connect (*to_set, "value_changed",
 963                                           G_CALLBACK (on_adjustment_value_changed), view);
 964                 }
 965         }
 966 }
 967
 968 static void
 969 ev_view_set_scroll_adjustments (EvView *view,
 970                                 GtkAdjustment  *hadjustment,
 971                                 GtkAdjustment  *vadjustment)
 972 {
 973         set_scroll_adjustment (view, GTK_ORIENTATION_HORIZONTAL, hadjustment);
 974         set_scroll_adjustment (view, GTK_ORIENTATION_VERTICAL, vadjustment);
 975
 976         view_update_adjustments (view);
 977 }
 978
 979 static void
 980 add_scroll_binding_keypad (GtkBindingSet  *binding_set,
 981                            guint           keyval,
 982                            GtkScrollType   scroll,
 983                            gboolean        horizontal)
 984 {
 985   guint keypad_keyval = keyval - GDK_Left + GDK_KP_Left;
 986
 987   gtk_binding_entry_add_signal (binding_set, keyval, 0,
 988                                 "scroll_view", 2,
 989                                 GTK_TYPE_SCROLL_TYPE, scroll,
 990                                 G_TYPE_BOOLEAN, horizontal);
 991   gtk_binding_entry_add_signal (binding_set, keypad_keyval, 0,
 992                                 "scroll_view", 2,
 993                                 GTK_TYPE_SCROLL_TYPE, scroll,
 994                                 G_TYPE_BOOLEAN, horizontal);
 995 }
 996
 997 static void
 998 add_scroll_binding_shifted (GtkBindingSet  *binding_set,
 999                             guint           keyval,
1000                             GtkScrollType   scroll_normal,
1001                             GtkScrollType   scroll_shifted,
1002                             gboolean        horizontal)
1003 {
1004   gtk_binding_entry_add_signal (binding_set, keyval, 0,
1005                                 "scroll_view", 2,
1006                                 GTK_TYPE_SCROLL_TYPE, scroll_normal,
1007                                 G_TYPE_BOOLEAN, horizontal);
1008   gtk_binding_entry_add_signal (binding_set, keyval, GDK_SHIFT_MASK,
1009                                 "scroll_view", 2,
1010                                 GTK_TYPE_SCROLL_TYPE, scroll_shifted,
1011                                 G_TYPE_BOOLEAN, horizontal);
1012 }
1013
1014 static void
1015 ev_view_jump (EvView        *view,
1016               GtkScrollType  scroll)
1017 {
1018         GtkAdjustment *adjustment;
1019         double value, increment;
1020         gboolean first_page = FALSE;
1021         gboolean last_page = FALSE;
1022
1023         /* Assign values for increment and vertical adjustment */
1024         adjustment = view->vadjustment;
1025         increment = adjustment->page_size * 0.75;
1026         value = adjustment->value;
1027
1028         /* Assign boolean for first and last page */
1029         if (view->current_page == 0)
1030                 first_page = TRUE;
1031         if (view->current_page == ev_page_cache_get_n_pages (view->page_cache) - 1)
1032                 last_page = TRUE;
1033
1034         switch (scroll) {
1035                 case EV_SCROLL_PAGE_BACKWARD:
1036                         /* Do not jump backwards if at the first page */
1037                         if (value == (adjustment->lower) && first_page) {
1038                                 /* Do nothing */
1039                                 /* At the top of a page, assign the upper bound limit of previous page */
1040                         } else if (value == (adjustment->lower)) {
1041                                 value = adjustment->upper - adjustment->page_size;
1042                                 ev_page_cache_set_current_page (view->page_cache, view->current_page - 1);
1043                                 /* Jump to the top */
1044                         } else {
1045                                 value = MAX (value - increment, adjustment->lower);
1046                         }
1047                         break;
1048                 case EV_SCROLL_PAGE_FORWARD:
1049                         /* Do not jump forward if at the last page */
1050                         if (value == (adjustment->upper - adjustment->page_size) && last_page) {
1051                                 /* Do nothing */
1052                         /* At the bottom of a page, assign the lower bound limit of next page */
1053                         } else if (value == (adjustment->upper - adjustment->page_size)) {
1054                                 value = 0;
1055                                 ev_page_cache_set_current_page (view->page_cache, view->current_page + 1);
1056                         /* Jump to the bottom */
1057                         } else {
1058                                 value = MIN (value + increment, adjustment->upper - adjustment->page_size);
1059                         }
1060                         break;
1061                 default:
1062                         break;
1063         }
1064
1065         gtk_adjustment_set_value (adjustment, value);
1066 }
1067
1068 static void
1069 ev_view_scroll_view (EvView *view,
1070                      GtkScrollType scroll,
1071                      gboolean horizontal)
1072 {
1073         if (scroll == GTK_SCROLL_PAGE_BACKWARD) {
1074                 ev_page_cache_prev_page (view->page_cache);
1075         } else if (scroll == GTK_SCROLL_PAGE_FORWARD) {
1076                 ev_page_cache_next_page (view->page_cache);
1077         } else if (scroll == EV_SCROLL_PAGE_BACKWARD || scroll == EV_SCROLL_PAGE_FORWARD) {
1078                 ev_view_jump (view, scroll);
1079         } else {
1080                 GtkAdjustment *adjustment;
1081                 double value;
1082
1083                 if (horizontal) {
1084                         adjustment = view->hadjustment;
1085                 } else {
1086                         adjustment = view->vadjustment;
1087                 }
1088
1089                 value = adjustment->value;
1090
1091                 switch (scroll) {
1092                         case GTK_SCROLL_STEP_BACKWARD:
1093                                 value -= adjustment->step_increment;
1094                                 break;
1095                         case GTK_SCROLL_STEP_FORWARD:
1096                                 value += adjustment->step_increment;
1097                                 break;
1098                         default:
1099                                 break;
1100                 }
1101
1102                 value = CLAMP (value, adjustment->lower,
1103                                adjustment->upper - adjustment->page_size);
1104
1105                 gtk_adjustment_set_value (adjustment, value);
1106         }
1107 }
1108
1109 static void
1110 ev_view_set_property (GObject *object,
1111                       guint prop_id,
1112                       const GValue *value,
1113                       GParamSpec *pspec)
1114 {
1115         switch (prop_id)
1116         {
1117                 /* Read only */
1118                 case PROP_STATUS:
1119                 case PROP_FIND_STATUS:
1120                         break;
1121         }
1122 }
1123
1124 static void
1125 ev_view_get_property (GObject *object,
1126                       guint prop_id,
1127                       GValue *value,
1128                       GParamSpec *pspec)
1129 {
1130         EvView *view = EV_VIEW (object);
1131
1132         switch (prop_id)
1133         {
1134                 case PROP_STATUS:
1135                         g_value_set_string (value, view->status);
1136                         break;
1137                 case PROP_FIND_STATUS:
1138                         g_value_set_string (value, view->status);
1139                         break;
1140         }
1141 }
1142
1143 static void
1144 ev_view_class_init (EvViewClass *class)
1145 {
1146         GObjectClass *object_class = G_OBJECT_CLASS (class);
1147         GtkObjectClass *gtk_object_class = GTK_OBJECT_CLASS (class);
1148         GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
1149         GtkBindingSet *binding_set;
1150
1151         object_class->finalize = ev_view_finalize;
1152         object_class->set_property = ev_view_set_property;
1153         object_class->get_property = ev_view_get_property;
1154
1155         widget_class->expose_event = ev_view_expose_event;
1156         widget_class->button_press_event = ev_view_button_press_event;
1157         widget_class->motion_notify_event = ev_view_motion_notify_event;
1158         widget_class->button_release_event = ev_view_button_release_event;
1159         widget_class->size_request = ev_view_size_request;
1160         widget_class->size_allocate = ev_view_size_allocate;
1161         widget_class->realize = ev_view_realize;
1162         widget_class->unrealize = ev_view_unrealize;
1163         gtk_object_class->destroy = ev_view_destroy;
1164
1165         class->set_scroll_adjustments = ev_view_set_scroll_adjustments;
1166         class->scroll_view = ev_view_scroll_view;
1167
1168         widget_class->set_scroll_adjustments_signal =  g_signal_new ("set-scroll-adjustments",
1169                                                                      G_OBJECT_CLASS_TYPE (object_class),
1170                                                                      G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1171                                                                      G_STRUCT_OFFSET (EvViewClass, set_scroll_adjustments),
1172                                                                      NULL, NULL,
1173                                                                      ev_marshal_VOID__OBJECT_OBJECT,
1174                                                                      G_TYPE_NONE, 2,
1175                                                                      GTK_TYPE_ADJUSTMENT,
1176                                                                      GTK_TYPE_ADJUSTMENT);
1177
1178         g_signal_new ("scroll_view",
1179                       G_TYPE_FROM_CLASS (object_class),
1180                       G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1181                       G_STRUCT_OFFSET (EvViewClass, scroll_view),
1182                       NULL, NULL,
1183                       ev_marshal_VOID__ENUM_BOOLEAN,
1184                       G_TYPE_NONE, 2,
1185                       GTK_TYPE_SCROLL_TYPE,
1186                       G_TYPE_BOOLEAN);
1187
1188         g_object_class_install_property (object_class,
1189                                          PROP_STATUS,
1190                                          g_param_spec_string ("status",
1191                                                               "Status Message",
1192                                                               "The status message",
1193                                                               NULL,
1194                                                               G_PARAM_READABLE));
1195
1196         g_object_class_install_property (object_class,
1197                                          PROP_FIND_STATUS,
1198                                          g_param_spec_string ("find-status",
1199                                                               "Find Status Message",
1200                                                               "The find status message",
1201                                                               NULL,
1202                                                               G_PARAM_READABLE));
1203
1204         binding_set = gtk_binding_set_by_class (class);
1205
1206         add_scroll_binding_keypad (binding_set, GDK_Left,  GTK_SCROLL_STEP_BACKWARD, TRUE);
1207         add_scroll_binding_keypad (binding_set, GDK_Right, GTK_SCROLL_STEP_FORWARD,  TRUE);
1208         add_scroll_binding_keypad (binding_set, GDK_Up,    GTK_SCROLL_STEP_BACKWARD, FALSE);
1209         add_scroll_binding_keypad (binding_set, GDK_Down,  GTK_SCROLL_STEP_FORWARD,  FALSE);
1210
1211         add_scroll_binding_keypad (binding_set, GDK_Page_Up,   GTK_SCROLL_PAGE_BACKWARD, FALSE);
1212         add_scroll_binding_keypad (binding_set, GDK_Page_Down, GTK_SCROLL_PAGE_FORWARD,  FALSE);
1213
1214         add_scroll_binding_shifted (binding_set, GDK_space, EV_SCROLL_PAGE_FORWARD, EV_SCROLL_PAGE_BACKWARD, FALSE);
1215         add_scroll_binding_shifted (binding_set, GDK_BackSpace, EV_SCROLL_PAGE_BACKWARD, EV_SCROLL_PAGE_FORWARD, FALSE);
1216 }
1217
1218 static void
1219 ev_view_init (EvView *view)
1220 {
1221         GTK_WIDGET_SET_FLAGS (view, GTK_CAN_FOCUS);
1222
1223         view->spacing = 10;
1224         view->scale = 1.0;
1225         view->current_page = 0;
1226         view->pressed_button = -1;
1227         view->cursor = EV_VIEW_CURSOR_NORMAL;
1228 }
1229
1230 static void
1231 update_find_status_message (EvView *view)
1232 {
1233         char *message;
1234
1235 //      g_mutex_lock (EV_DOC_MUTEX);
1236         if (view->current_page == view->find_page) {
1237                 int results;
1238
1239 //              g_mutex_lock (EV_DOC_MUTEX);
1240                 results = ev_document_find_get_n_results
1241                                 (EV_DOCUMENT_FIND (view->document),
1242                                  view->current_page);
1243 //              g_mutex_unlock (EV_DOC_MUTEX);
1244                 /* TRANS: Sometimes this could be better translated as
1245                    "%d hit(s) on this page".  Therefore this string
1246                    contains plural cases. */
1247                 message = g_strdup_printf (ngettext ("%d found on this page",
1248                                                      "%d found on this page",
1249                                                      results),
1250                                            results);
1251         } else {
1252                 double percent;
1253
1254                 g_mutex_lock (EV_DOC_MUTEX);
1255                 percent = ev_document_find_get_progress
1256                                 (EV_DOCUMENT_FIND (view->document));
1257                 g_mutex_unlock (EV_DOC_MUTEX);
1258                 if (percent >= (1.0 - 1e-10)) {
1259                         message = g_strdup (_("Not found"));
1260                 } else {
1261                         message = g_strdup_printf (_("%3d%% remaining to search"),
1262                                                    (int) ((1.0 - percent) * 100));
1263                 }
1264
1265         }
1266 //      g_mutex_unlock (EV_DOC_MUTEX);
1267
1268         ev_view_set_find_status (view, message);
1269 //      g_free (message);
1270 }
1271
1272 #define MARGIN 5
1273
1274 static void
1275 ensure_rectangle_is_visible (EvView *view, GdkRectangle *rect)
1276 {
1277         GtkWidget *widget = GTK_WIDGET (view);
1278         GtkAdjustment *adjustment;
1279         int value;
1280
1281         adjustment = view->vadjustment;
1282
1283         if (rect->y < adjustment->value) {
1284                 value = MAX (adjustment->lower, rect->y - MARGIN);
1285                 gtk_adjustment_set_value (view->vadjustment, value);
1286         } else if (rect->y + rect->height >
1287                    adjustment->value + widget->allocation.height) {
1288                 value = MIN (adjustment->upper, rect->y + rect->height -
1289                              widget->allocation.height + MARGIN);
1290                 gtk_adjustment_set_value (view->vadjustment, value);
1291         }
1292
1293         adjustment = view->hadjustment;
1294
1295         if (rect->x < adjustment->value) {
1296                 value = MAX (adjustment->lower, rect->x - MARGIN);
1297                 gtk_adjustment_set_value (view->hadjustment, value);
1298         } else if (rect->x + rect->height >
1299                    adjustment->value + widget->allocation.width) {
1300                 value = MIN (adjustment->upper, rect->x + rect->width -
1301                              widget->allocation.width + MARGIN);
1302                 gtk_adjustment_set_value (view->hadjustment, value);
1303         }
1304 }
1305
1306 static void
1307 jump_to_find_result (EvView *view)
1308 {
1309         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
1310         EvRectangle rect;
1311         GdkRectangle view_rect;
1312         int n_results;
1313
1314         g_mutex_lock (EV_DOC_MUTEX);
1315         n_results = ev_document_find_get_n_results (find, view->current_page);
1316         g_mutex_unlock (EV_DOC_MUTEX);
1317
1318         if (n_results > view->find_result) {
1319                 g_mutex_lock (EV_DOC_MUTEX);
1320                 ev_document_find_get_result
1321                         (find, view->current_page, view->find_result, &rect);
1322                 g_mutex_unlock (EV_DOC_MUTEX);
1323
1324                 doc_rect_to_view_rect (view, &rect, &view_rect);
1325                 ensure_rectangle_is_visible (view, &view_rect);
1326         }
1327 }
1328
1329 static void
1330 jump_to_find_page (EvView *view)
1331 {
1332         int n_pages, i;
1333
1334         n_pages = ev_page_cache_get_n_pages (view->page_cache);
1335
1336         for (i = 0; i < n_pages; i++) {
1337                 int has_results;
1338                 int page;
1339
1340                 page = i + view->find_page;
1341                 if (page >= n_pages) {
1342                         page = page - n_pages;
1343                 }
1344
1345                 //              g_mutex_lock (EV_DOC_MUTEX);
1346                 has_results = ev_document_find_page_has_results
1347                                 (EV_DOCUMENT_FIND (view->document), page);
1348                 if (has_results == -1) {
1349                         view->find_page = page;
1350                         break;
1351                 } else if (has_results == 1) {
1352                         ev_page_cache_set_current_page (view->page_cache, page);
1353                         jump_to_find_result (view);
1354                         break;
1355                 }
1356         }
1357 }
1358
1359 static void
1360 find_changed_cb (EvDocument *document, int page, EvView *view)
1361 {
1362         jump_to_find_page (view);
1363         jump_to_find_result (view);
1364         update_find_status_message (view);
1365
1366         if (view->current_page == page)
1367                 gtk_widget_queue_draw (GTK_WIDGET (view));
1368 }
1369 /*** Public API ***/
1370
1371 GtkWidget*
1372 ev_view_new (void)
1373 {
1374         return g_object_new (EV_TYPE_VIEW, NULL);
1375 }
1376
1377 static void
1378 job_finished_cb (EvPixbufCache *pixbuf_cache,
1379                  EvView        *view)
1380 {
1381         gtk_widget_queue_draw (GTK_WIDGET (view));
1382 }
1383
1384
1385 static void
1386 page_changed_cb (EvPageCache *page_cache,
1387                  int          new_page,
1388                  EvView      *view)
1389 {
1390         int old_page = view->current_page;
1391         int old_width, old_height;
1392         int new_width, new_height;
1393
1394         if (old_page == new_page)
1395                 return;
1396
1397         ev_page_cache_get_size (page_cache,
1398                                 old_page,
1399                                 view->scale,
1400                                 &old_width, &old_height);
1401         ev_page_cache_get_size (page_cache,
1402                                 new_page,
1403                                 view->scale,
1404                                 &new_width, &new_height);
1405
1406         if (view->cursor != EV_VIEW_CURSOR_HIDDEN) {
1407                 //ev_view_set_cursor (view, EV_VIEW_CURSOR_WAIT);
1408         }
1409
1410         view->current_page = new_page;
1411         view->has_selection = FALSE;
1412
1413         ev_pixbuf_cache_set_page_range (view->pixbuf_cache,
1414                                         view->current_page,
1415                                         view->current_page,
1416                                         view->scale);
1417
1418         if (new_width != old_width || new_height != old_height)
1419                 gtk_widget_queue_resize (GTK_WIDGET (view));
1420         else
1421                 gtk_widget_queue_draw (GTK_WIDGET (view));
1422
1423         gtk_adjustment_set_value (view->vadjustment,
1424                                   view->vadjustment->lower);
1425
1426         if (EV_IS_DOCUMENT_FIND (view->document)) {
1427                 view->find_page = new_page;
1428                 view->find_result = 0;
1429                 update_find_status_message (view);
1430         }
1431 }
1432
1433 void
1434 ev_view_set_document (EvView     *view,
1435                       EvDocument *document)
1436 {
1437         g_return_if_fail (EV_IS_VIEW (view));
1438
1439         if (document != view->document) {
1440                 if (view->document) {
1441                         g_signal_handlers_disconnect_by_func (view->document,
1442                                                               find_changed_cb,
1443                                                               view);
1444                         g_object_unref (view->document);
1445                         view->page_cache = NULL;
1446
1447                 }
1448
1449                 view->document = document;
1450                 view->find_page = 0;
1451                 view->find_result = 0;
1452
1453                 if (view->document) {
1454                         g_object_ref (view->document);
1455                         if (EV_IS_DOCUMENT_FIND (view->document)) {
1456                                 g_signal_connect (view->document,
1457                                                   "find_changed",
1458                                                   G_CALLBACK (find_changed_cb),
1459                                                   view);
1460                         }
1461                         view->page_cache = ev_document_get_page_cache (view->document);
1462                         g_signal_connect (view->page_cache, "page-changed", G_CALLBACK (page_changed_cb), view);
1463                         view->pixbuf_cache = ev_pixbuf_cache_new (view->document);
1464                         g_signal_connect (view->pixbuf_cache, "job-finished", G_CALLBACK (job_finished_cb), view);
1465                 }
1466
1467                 gtk_widget_queue_resize (GTK_WIDGET (view));
1468         }
1469 }
1470
1471 int
1472 ev_view_get_page        (EvView     *view)
1473 {
1474         return view->current_page;
1475 }
1476
1477 static void
1478 go_to_link (EvView *view, EvLink *link)
1479 {
1480         EvLinkType type;
1481         const char *uri;
1482         int page;
1483
1484         type = ev_link_get_link_type (link);
1485
1486         switch (type) {
1487                 case EV_LINK_TYPE_TITLE:
1488                         break;
1489                 case EV_LINK_TYPE_PAGE:
1490                         page = ev_link_get_page (link);
1491                         ev_page_cache_set_current_page (view->page_cache, page);
1492                         break;
1493                 case EV_LINK_TYPE_EXTERNAL_URI:
1494                         uri = ev_link_get_uri (link);
1495                         gnome_vfs_url_show (uri);
1496                         break;
1497         }
1498 }
1499
1500 void
1501 ev_view_go_to_link (EvView *view, EvLink *link)
1502 {
1503         go_to_link (view, link);
1504 }
1505
1506 static void
1507 ev_view_zoom (EvView   *view,
1508               double    factor,
1509               gboolean  relative)
1510 {
1511         double scale;
1512
1513         if (relative)
1514                 scale = view->scale * factor;
1515         else
1516                 scale = factor;
1517
1518         scale = CLAMP (scale, MIN_SCALE, MAX_SCALE);
1519
1520         view->scale = scale;
1521         gtk_widget_queue_resize (GTK_WIDGET (view));
1522 }
1523
1524 void
1525 ev_view_zoom_in (EvView *view)
1526 {
1527         view->width = view->height = -1;
1528         ev_view_zoom (view, ZOOM_IN_FACTOR, TRUE);
1529 }
1530
1531 void
1532 ev_view_zoom_out (EvView *view)
1533 {
1534         view->width = view->height = -1;
1535         ev_view_zoom (view, ZOOM_OUT_FACTOR, TRUE);
1536 }
1537
1538 static double
1539 size_to_zoom_factor (EvView *view, int width, int height)
1540 {
1541         int doc_width, doc_height;
1542         double scale, scale_w, scale_h;
1543         GtkBorder border;
1544
1545         doc_width = doc_height = 0;
1546         scale = scale_w = scale_h = 1.0;
1547         ev_page_cache_get_size (view->page_cache,
1548                                 view->current_page,
1549                                 view->scale,
1550                                 &doc_width,
1551                                 &doc_height);
1552
1553         /* FIXME: The border size isn't constant.  Ugh.  Still, if we have extra
1554          * space, we just cut it from the border */
1555         ev_document_misc_get_page_border_size (doc_width, doc_height, &border);
1556
1557         if (doc_width == 0 && doc_height == 0) {
1558                 return 0;
1559         }
1560
1561         if (width >= 0) {
1562                 int target_width;
1563
1564                 target_width = width - (view->spacing * 2 + border.left + border.right);
1565                 scale = scale_w = (double)target_width * view->scale / doc_width;
1566         }
1567
1568         if (height >= 0) {
1569                 int target_height;
1570
1571                 target_height = height - (view->spacing * 2 + border.top + border.bottom);
1572                 scale = scale_h = (double)target_height * view->scale / doc_height;
1573         }
1574
1575         if (width >= 0 && height >= 0) {
1576                 scale = (scale_w < scale_h) ? scale_w : scale_h;
1577         }
1578
1579         return scale;
1580 }
1581
1582 void
1583 ev_view_set_size (EvView     *view,
1584                   int         width,
1585                   int         height)
1586 {
1587         double factor;
1588
1589         if (!view->document)
1590                 return;
1591
1592         if (view->width != width ||
1593             view->height != height) {
1594                 view->width = width;
1595                 view->height = height;
1596                 factor = size_to_zoom_factor (view, width, height);
1597                 ev_view_zoom (view, factor, FALSE);
1598                 gtk_widget_queue_resize (GTK_WIDGET (view));
1599         }
1600 }
1601
1602 const char *
1603 ev_view_get_status (EvView *view)
1604 {
1605         g_return_val_if_fail (EV_IS_VIEW (view), NULL);
1606
1607         return view->status;
1608 }
1609
1610 const char *
1611 ev_view_get_find_status (EvView *view)
1612 {
1613         g_return_val_if_fail (EV_IS_VIEW (view), NULL);
1614
1615         return view->find_status;
1616 }
1617
1618 gboolean
1619 ev_view_can_find_next (EvView *view)
1620 {
1621         int n_results = 0;
1622
1623         if (EV_IS_DOCUMENT_FIND (view->document)) {
1624                 EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
1625
1626                 g_mutex_lock (EV_DOC_MUTEX);
1627                 n_results = ev_document_find_get_n_results (find, view->current_page);
1628                 g_mutex_unlock (EV_DOC_MUTEX);
1629         }
1630
1631         return n_results > 0;
1632 }
1633
1634 void
1635 ev_view_find_next (EvView *view)
1636 {
1637         EvPageCache *page_cache;
1638         int n_results, n_pages;
1639         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
1640
1641         page_cache = ev_document_get_page_cache (view->document);
1642         g_mutex_lock (EV_DOC_MUTEX);
1643         n_results = ev_document_find_get_n_results (find, view->current_page);
1644         g_mutex_unlock (EV_DOC_MUTEX);
1645
1646         n_pages = ev_page_cache_get_n_pages (page_cache);
1647
1648         view->find_result++;
1649
1650         if (view->find_result >= n_results) {
1651                 view->find_result = 0;
1652                 view->find_page++;
1653
1654                 if (view->find_page >= n_pages) {
1655                         view->find_page = 0;
1656                 }
1657
1658                 jump_to_find_page (view);
1659         } else {
1660                 jump_to_find_result (view);
1661                 gtk_widget_queue_draw (GTK_WIDGET (view));
1662         }
1663 }
1664
1665 void
1666 ev_view_find_previous (EvView *view)
1667 {
1668         int n_results, n_pages;
1669         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
1670         EvPageCache *page_cache;
1671
1672         page_cache = ev_document_get_page_cache (view->document);
1673
1674         g_mutex_lock (EV_DOC_MUTEX);
1675         n_results = ev_document_find_get_n_results (find, view->current_page);
1676         g_mutex_unlock (EV_DOC_MUTEX);
1677
1678         n_pages = ev_page_cache_get_n_pages (page_cache);
1679
1680         view->find_result--;
1681
1682         if (view->find_result < 0) {
1683                 view->find_result = 0;
1684                 view->find_page--;
1685
1686                 if (view->find_page < 0) {
1687                         view->find_page = n_pages - 1;
1688                 }
1689
1690                 jump_to_find_page (view);
1691         } else {
1692                 jump_to_find_result (view);
1693                 gtk_widget_queue_draw (GTK_WIDGET (view));
1694         }
1695 }
1696 void
1697 ev_view_hide_cursor (EvView *view)
1698 {
1699        ev_view_set_cursor (view, EV_VIEW_CURSOR_HIDDEN);
1700 }
1701
1702 void
1703 ev_view_show_cursor (EvView *view)
1704 {
1705        ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
1706 }