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         GtkBorder border;
 118         gboolean show_border;
 119 };
 120
 121 struct _EvViewClass {
 122         GtkWidgetClass parent_class;
 123
 124         void    (*set_scroll_adjustments) (EvView         *view,
 125                                            GtkAdjustment  *hadjustment,
 126                                            GtkAdjustment  *vadjustment);
 127         void    (*scroll_view)            (EvView         *view,
 128                                            GtkScrollType   scroll,
 129                                            gboolean        horizontal);
 130
 131 };
 132
 133
 134 static void ev_view_set_scroll_adjustments (EvView         *view,
 135                                             GtkAdjustment  *hadjustment,
 136                                             GtkAdjustment  *vadjustment);
 137
 138 G_DEFINE_TYPE (EvView, ev_view, GTK_TYPE_WIDGET)
 139
 140 /*** Helper functions ***/
 141
 142 static void
 143 view_update_adjustments (EvView *view)
 144 {
 145         int old_x = view->scroll_x;
 146         int old_y = view->scroll_y;
 147
 148         if (view->hadjustment)
 149                 view->scroll_x = view->hadjustment->value;
 150         else
 151                 view->scroll_x = 0;
 152
 153         if (view->vadjustment)
 154                 view->scroll_y = view->vadjustment->value;
 155         else
 156                 view->scroll_y = 0;
 157
 158         if (GTK_WIDGET_REALIZED (view) &&
 159             (view->scroll_x != old_x || view->scroll_y != old_y)) {
 160                 gdk_window_move (view->bin_window, - view->scroll_x, - view->scroll_y);
 161                 gdk_window_process_updates (view->bin_window, TRUE);
 162         }
 163 }
 164
 165 static void
 166 view_set_adjustment_values (EvView         *view,
 167                             GtkOrientation  orientation)
 168 {
 169         GtkWidget *widget = GTK_WIDGET (view);
 170         GtkAdjustment *adjustment;
 171         gboolean value_changed = FALSE;
 172         int requisition;
 173         int allocation;
 174
 175         if (orientation == GTK_ORIENTATION_HORIZONTAL)  {
 176                 requisition = widget->requisition.width;
 177                 allocation = widget->allocation.width;
 178                 adjustment = view->hadjustment;
 179         } else {
 180                 requisition = widget->requisition.height;
 181                 allocation = widget->allocation.height;
 182                 adjustment = view->vadjustment;
 183         }
 184
 185         if (!adjustment)
 186                 return;
 187
 188         adjustment->page_size = allocation;
 189         adjustment->step_increment = allocation * 0.1;
 190         adjustment->page_increment = allocation * 0.9;
 191         adjustment->lower = 0;
 192         adjustment->upper = MAX (allocation, requisition);
 193
 194         if (adjustment->value > adjustment->upper - adjustment->page_size) {
 195                 adjustment->value = adjustment->upper - adjustment->page_size;
 196                 value_changed = TRUE;
 197         }
 198
 199         gtk_adjustment_changed (adjustment);
 200         if (value_changed)
 201                 gtk_adjustment_value_changed (adjustment);
 202 }
 203
 204 /*** Virtual function implementations ***/
 205
 206 static void
 207 ev_view_finalize (GObject *object)
 208 {
 209         EvView *view = EV_VIEW (object);
 210
 211         LOG ("Finalize");
 212
 213         g_free (view->status);
 214         g_free (view->find_status);
 215
 216         G_OBJECT_CLASS (ev_view_parent_class)->finalize (object);
 217 }
 218
 219 static void
 220 ev_view_destroy (GtkObject *object)
 221 {
 222         EvView *view = EV_VIEW (object);
 223
 224         if (view->document) {
 225                 g_object_unref (view->document);
 226                 view->document = NULL;
 227         }
 228         if (view->pixbuf_cache) {
 229                 g_object_unref (view->pixbuf_cache);
 230                 view->pixbuf_cache = NULL;
 231         }
 232         ev_view_set_scroll_adjustments (view, NULL, NULL);
 233
 234         GTK_OBJECT_CLASS (ev_view_parent_class)->destroy (object);
 235 }
 236
 237 static void
 238 ev_view_get_offsets (EvView *view, int *x_offset, int *y_offset)
 239 {
 240         EvDocument *document = view->document;
 241         GtkWidget *widget = GTK_WIDGET (view);
 242         int width, height, target_width, target_height;
 243
 244         g_return_if_fail (EV_IS_DOCUMENT (document));
 245
 246         ev_page_cache_get_size (view->page_cache,
 247                                 view->current_page,
 248                                 view->scale,
 249                                 &width, &height);
 250
 251         *x_offset = view->spacing;
 252         *y_offset = view->spacing;
 253         target_width = width + view->border.left +
 254                        view->border.right + view->spacing * 2;
 255         target_height = height + view->border.top +
 256                         view->border.bottom + view->spacing * 2;
 257         *x_offset += MAX (0, (widget->allocation.width - target_width) / 2);
 258         *y_offset += MAX (0, (widget->allocation.height - target_height) / 2);
 259 }
 260
 261 static void
 262 view_rect_to_doc_rect (EvView *view, GdkRectangle *view_rect, EvRectangle *doc_rect)
 263 {
 264         int x_offset, y_offset;
 265
 266         ev_view_get_offsets (view, &x_offset, &y_offset);
 267         doc_rect->x1 = (double) (view_rect->x - x_offset) / view->scale;
 268         doc_rect->y1 = (double) (view_rect->y - y_offset) / view->scale;
 269         doc_rect->x2 = doc_rect->x1 + (double) view_rect->width / view->scale;
 270         doc_rect->y2 = doc_rect->y1 + (double) view_rect->height / view->scale;
 271 }
 272
 273 static void
 274 doc_rect_to_view_rect (EvView *view, EvRectangle *doc_rect, GdkRectangle *view_rect)
 275 {
 276         int x_offset, y_offset;
 277
 278         ev_view_get_offsets (view, &x_offset, &y_offset);
 279         view_rect->x = floor (doc_rect->x1 * view->scale) + x_offset;
 280         view_rect->y = floor (doc_rect->y1 * view->scale) + y_offset;
 281         view_rect->width = ceil (doc_rect->x2 * view->scale) + x_offset - view_rect->x;
 282         view_rect->height = ceil (doc_rect->y2 * view->scale) + y_offset - view_rect->y;
 283 }
 284
 285 static void
 286 compute_border (EvView *view, int width, int height, GtkBorder *border)
 287 {
 288         if (view->show_border) {
 289                 ev_document_misc_get_page_border_size (width, height, border);
 290         } else {
 291                 border->left = 0;
 292                 border->right = 0;
 293                 border->top = 0;
 294                 border->bottom = 0;
 295         }
 296 }
 297
 298 static void
 299 compute_zoom_factor (EvView *view)
 300 {
 301         int doc_width, doc_height;
 302         double scale, scale_w, scale_h;
 303         GtkBorder border;
 304
 305         if (view->width <= 0 && view->height <= 0) {
 306                 return;
 307         }
 308
 309         doc_width = doc_height = 0;
 310         scale = scale_w = scale_h = 1.0;
 311         ev_page_cache_get_size (view->page_cache,
 312                                 view->current_page,
 313                                 1.0,
 314                                 &doc_width,
 315                                 &doc_height);
 316
 317         compute_border (view, doc_width, doc_height, &border);
 318
 319         if (doc_width == 0 || doc_height == 0) {
 320                 return;
 321         }
 322
 323         if (view->width >= 0) {
 324                 int target_width;
 325
 326                 target_width = view->width - (view->spacing * 2 + view->border.left +
 327                                               view->border.right);
 328                 scale = scale_w = (double)target_width / doc_width;
 329         }
 330
 331         if (view->height >= 0) {
 332                 int target_height;
 333
 334                 target_height = view->height - (view->spacing * 2 + view->border.top +
 335                                                 view->border.bottom);
 336                 scale = scale_h = (double)target_height / doc_height;
 337         }
 338
 339         if (view->width >= 0 && view->height >= 0) {
 340                 scale = (scale_w < scale_h) ? scale_w : scale_h;
 341         }
 342
 343         view->scale = scale;
 344 }
 345
 346 /* Called by size_request to make sure we have appropriate jobs running.
 347  */
 348 static void
 349 ev_view_size_request (GtkWidget      *widget,
 350                       GtkRequisition *requisition)
 351 {
 352         EvView *view = EV_VIEW (widget);
 353         gint width, height;
 354
 355         if (!GTK_WIDGET_REALIZED (widget))
 356                 return;
 357
 358         if (!view->document) {
 359                 requisition->width = 1;
 360                 requisition->height = 1;
 361                 return;
 362         }
 363
 364         compute_zoom_factor (view);
 365
 366         ev_page_cache_get_size (view->page_cache,
 367                                 view->current_page,
 368                                 view->scale,
 369                                 &width, &height);
 370
 371         compute_border (view, width, height, &(view->border));
 372
 373         ev_pixbuf_cache_set_page_range (view->pixbuf_cache,
 374                                         view->current_page,
 375                                         view->current_page,
 376                                         view->scale);
 377
 378         if (view->width >= 0) {
 379                 requisition->width = 0;
 380         } else {
 381                 requisition->width = width + view->border.left +
 382                                      view->border.right + view->spacing * 2;
 383         }
 384
 385         if (view->height >= 0) {
 386                 requisition->height = 0;
 387         } else {
 388                 requisition->height = height + view->border.top +
 389                                       view->border.bottom + view->spacing * 2;
 390         }
 391 }
 392
 393 static void
 394 ev_view_size_allocate (GtkWidget      *widget,
 395                        GtkAllocation  *allocation)
 396 {
 397         EvView *view = EV_VIEW (widget);
 398
 399         GTK_WIDGET_CLASS (ev_view_parent_class)->size_allocate (widget, allocation);
 400
 401         view_set_adjustment_values (view, GTK_ORIENTATION_HORIZONTAL);
 402         view_set_adjustment_values (view, GTK_ORIENTATION_VERTICAL);
 403
 404         if (GTK_WIDGET_REALIZED (widget)) {
 405                 gdk_window_resize (view->bin_window,
 406                                    MAX (widget->allocation.width, widget->requisition.width),
 407                                    MAX (widget->allocation.height, widget->requisition.height));
 408         }
 409 }
 410
 411 static void
 412 ev_view_realize (GtkWidget *widget)
 413 {
 414         EvView *view = EV_VIEW (widget);
 415         GdkWindowAttr attributes;
 416
 417         GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
 418
 419
 420         attributes.window_type = GDK_WINDOW_CHILD;
 421         attributes.wclass = GDK_INPUT_OUTPUT;
 422         attributes.visual = gtk_widget_get_visual (widget);
 423         attributes.colormap = gtk_widget_get_colormap (widget);
 424
 425         attributes.x = widget->allocation.x;
 426         attributes.y = widget->allocation.y;
 427         attributes.width = widget->allocation.width;
 428         attributes.height = widget->allocation.height;
 429         attributes.event_mask = 0;
 430
 431         widget->window = gdk_window_new (gtk_widget_get_parent_window (widget),
 432                                          &attributes,
 433                                          GDK_WA_X | GDK_WA_Y |
 434                                          GDK_WA_COLORMAP |
 435                                          GDK_WA_VISUAL);
 436         gdk_window_set_user_data (widget->window, widget);
 437         widget->style = gtk_style_attach (widget->style, widget->window);
 438         gdk_window_set_background (widget->window, &widget->style->mid[widget->state]);
 439
 440         attributes.x = 0;
 441         attributes.y = 0;
 442         attributes.width = MAX (widget->allocation.width, widget->requisition.width);
 443         attributes.height = MAX (widget->allocation.height, widget->requisition.height);
 444         attributes.event_mask = GDK_EXPOSURE_MASK |
 445                                 GDK_BUTTON_PRESS_MASK |
 446                                 GDK_BUTTON_RELEASE_MASK |
 447                                 GDK_SCROLL_MASK |
 448                                 GDK_KEY_PRESS_MASK |
 449                                 GDK_POINTER_MOTION_MASK |
 450                                 GDK_LEAVE_NOTIFY_MASK;
 451
 452         view->bin_window = gdk_window_new (widget->window,
 453                                            &attributes,
 454                                            GDK_WA_X | GDK_WA_Y |
 455                                            GDK_WA_COLORMAP |
 456                                            GDK_WA_VISUAL);
 457         gdk_window_set_user_data (view->bin_window, widget);
 458         gdk_window_show (view->bin_window);
 459
 460         widget->style = gtk_style_attach (widget->style, view->bin_window);
 461         gdk_window_set_background (view->bin_window, &widget->style->mid[widget->state]);
 462
 463         if (view->document) {
 464                 /* We can't get page size without a target, so we have to
 465                  * queue a size request at realization. Could be fixed
 466                  * with EvDocument changes to allow setting a GdkScreen
 467                  * without setting a target.
 468                  */
 469                 gtk_widget_queue_resize (widget);
 470         }
 471 }
 472
 473 static void
 474 ev_view_unrealize (GtkWidget *widget)
 475 {
 476         EvView *view = EV_VIEW (widget);
 477
 478         gdk_window_set_user_data (view->bin_window, NULL);
 479         gdk_window_destroy (view->bin_window);
 480         view->bin_window = NULL;
 481
 482         GTK_WIDGET_CLASS (ev_view_parent_class)->unrealize (widget);
 483 }
 484
 485 static guint32
 486 ev_gdk_color_to_rgb (const GdkColor *color)
 487 {
 488   guint32 result;
 489   result = (0xff0000 | (color->red & 0xff00));
 490   result <<= 8;
 491   result |= ((color->green & 0xff00) | (color->blue >> 8));
 492   return result;
 493 }
 494
 495 static void
 496 draw_rubberband (GtkWidget *widget, GdkWindow *window,
 497                  const GdkRectangle *rect, guchar alpha)
 498 {
 499         GdkGC *gc;
 500         GdkPixbuf *pixbuf;
 501         GdkColor *fill_color_gdk;
 502         guint fill_color;
 503
 504         fill_color_gdk = gdk_color_copy (&GTK_WIDGET (widget)->style->base[GTK_STATE_SELECTED]);
 505         fill_color = ev_gdk_color_to_rgb (fill_color_gdk) << 8 | alpha;
 506
 507         pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE, 8,
 508                                  rect->width, rect->height);
 509         gdk_pixbuf_fill (pixbuf, fill_color);
 510
 511         gdk_draw_pixbuf (window, NULL, pixbuf,
 512                          0, 0,
 513                          rect->x, rect->y,
 514                          rect->width, rect->height,
 515                          GDK_RGB_DITHER_NONE,
 516                          0, 0);
 517
 518         g_object_unref (pixbuf);
 519
 520         gc = gdk_gc_new (window);
 521         gdk_gc_set_rgb_fg_color (gc, fill_color_gdk);
 522         gdk_draw_rectangle (window, gc, FALSE,
 523                             rect->x, rect->y,
 524                             rect->width - 1,
 525                             rect->height - 1);
 526         g_object_unref (gc);
 527
 528         gdk_color_free (fill_color_gdk);
 529 }
 530
 531 static void
 532 highlight_find_results (EvView *view)
 533 {
 534         EvDocumentFind *find;
 535         int i, results = 0;
 536
 537         g_return_if_fail (EV_IS_DOCUMENT_FIND (view->document));
 538
 539         find = EV_DOCUMENT_FIND (view->document);
 540
 541         g_mutex_lock (EV_DOC_MUTEX);
 542         results = ev_document_find_get_n_results (find, view->current_page);
 543         g_mutex_unlock (EV_DOC_MUTEX);
 544
 545         for (i = 0; i < results; i++) {
 546                 EvRectangle rectangle;
 547                 GdkRectangle view_rectangle;
 548                 guchar alpha;
 549
 550                 alpha = (i == view->find_result) ? 0x90 : 0x20;
 551                 g_mutex_lock (EV_DOC_MUTEX);
 552                 ev_document_find_get_result (find, view->current_page,
 553                                              i, &rectangle);
 554                 g_mutex_unlock (EV_DOC_MUTEX);
 555                 doc_rect_to_view_rect (view, &rectangle, &view_rectangle);
 556                 draw_rubberband (GTK_WIDGET (view), view->bin_window,
 557                                  &view_rectangle, alpha);
 558         }
 559 }
 560
 561
 562 static void
 563 expose_bin_window (GtkWidget      *widget,
 564                    GdkEventExpose *event)
 565 {
 566         EvView *view = EV_VIEW (widget);
 567         gint width, height;
 568         GdkRectangle area;
 569         int x_offset, y_offset;
 570         GdkPixbuf *scaled_image;
 571         GdkPixbuf *current_pixbuf;
 572
 573         if (view->document == NULL)
 574                 return;
 575
 576         ev_view_get_offsets (view, &x_offset, &y_offset);
 577         ev_page_cache_get_size (view->page_cache,
 578                                 view->current_page,
 579                                 view->scale,
 580                                 &width, &height);
 581
 582         /* Paint the frame */
 583         area.x = x_offset;
 584         area.y = y_offset;
 585         area.width = width + view->border.left + view->border.right;
 586         area.height = height + view->border.top + view->border.bottom;
 587
 588         if (view->show_border) {
 589                 ev_document_misc_paint_one_page (view->bin_window, widget, &area,
 590                                                  &(view->border));
 591         }
 592
 593         /* Render the document itself */
 594         LOG ("Render area %d %d %d %d - Offset %d %d",
 595              event->area.x, event->area.y,
 596              event->area.width, event->area.height,
 597              x_offset, y_offset);
 598
 599         current_pixbuf = ev_pixbuf_cache_get_pixbuf (view->pixbuf_cache, view->current_page);
 600
 601         if (current_pixbuf == NULL)
 602                 scaled_image = NULL;
 603         else if (width == gdk_pixbuf_get_width (current_pixbuf) &&
 604                  height == gdk_pixbuf_get_height (current_pixbuf))
 605                 scaled_image = g_object_ref (current_pixbuf);
 606         else
 607                 scaled_image = gdk_pixbuf_scale_simple (current_pixbuf,
 608                                                         width, height,
 609                                                         GDK_INTERP_NEAREST);
 610         if (scaled_image) {
 611                 gdk_draw_pixbuf (view->bin_window,
 612                                  GTK_WIDGET (view)->style->fg_gc[GTK_STATE_NORMAL],
 613                                  scaled_image,
 614                                  0, 0,
 615                                  area.x + view->border.left,
 616                                  area.y + view->border.top,
 617                                  width, height,
 618                                  GDK_RGB_DITHER_NORMAL,
 619                                  0, 0);
 620                 g_object_unref (scaled_image);
 621         }
 622
 623         if (EV_IS_DOCUMENT_FIND (view->document)) {
 624                 highlight_find_results (view);
 625         }
 626
 627         if (view->has_selection) {
 628                 GdkRectangle rubberband;
 629
 630                 doc_rect_to_view_rect (view, &view->selection, &rubberband);
 631                 if (rubberband.width > 0 && rubberband.height > 0) {
 632                         draw_rubberband (widget, view->bin_window,
 633                                          &rubberband, 0x40);
 634                 }
 635         }
 636 }
 637
 638 static gboolean
 639 ev_view_expose_event (GtkWidget      *widget,
 640                       GdkEventExpose *event)
 641 {
 642         EvView *view = EV_VIEW (widget);
 643
 644         if (event->window == view->bin_window)
 645                 expose_bin_window (widget, event);
 646         else
 647                 return GTK_WIDGET_CLASS (ev_view_parent_class)->expose_event (widget, event);
 648
 649         return FALSE;
 650 }
 651
 652 void
 653 ev_view_select_all (EvView *ev_view)
 654 {
 655         GtkWidget *widget = GTK_WIDGET (ev_view);
 656         GdkRectangle selection;
 657         int width, height;
 658         int x_offset, y_offset;
 659
 660         g_return_if_fail (EV_IS_VIEW (ev_view));
 661
 662
 663         ev_view_get_offsets (ev_view, &x_offset, &y_offset);
 664         ev_page_cache_get_size (ev_view->page_cache,
 665                                 ev_view->current_page,
 666                                 ev_view->scale,
 667                                 &width, &height);
 668
 669         ev_view->has_selection = TRUE;
 670         selection.x = x_offset + ev_view->border.left;
 671         selection.y = y_offset + ev_view->border.top;
 672         selection.width = width;
 673         selection.height = height;
 674         view_rect_to_doc_rect (ev_view, &selection, &ev_view->selection);
 675
 676         gtk_widget_queue_draw (widget);
 677 }
 678
 679 void
 680 ev_view_copy (EvView *ev_view)
 681 {
 682         GtkClipboard *clipboard;
 683         char *text;
 684
 685         if (!ev_document_can_get_text (ev_view->document)) {
 686                 return;
 687         }
 688
 689         g_mutex_lock (EV_DOC_MUTEX);
 690         text = ev_document_get_text (ev_view->document,
 691                                      ev_view->current_page,
 692                                      &ev_view->selection);
 693         g_mutex_unlock (EV_DOC_MUTEX);
 694
 695         clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view),
 696                                               GDK_SELECTION_CLIPBOARD);
 697         gtk_clipboard_set_text (clipboard, text, -1);
 698         g_free (text);
 699 }
 700
 701 void
 702 ev_view_set_show_border (EvView *view, gboolean show_border)
 703 {
 704         g_return_if_fail (EV_IS_VIEW (view));
 705
 706         view->show_border = show_border;
 707
 708         gtk_widget_queue_resize (GTK_WIDGET (view));
 709 }
 710
 711 static void
 712 ev_view_primary_get_cb (GtkClipboard     *clipboard,
 713                         GtkSelectionData *selection_data,
 714                         guint             info,
 715                         gpointer          data)
 716 {
 717         EvView *ev_view = EV_VIEW (data);
 718         char *text;
 719
 720         if (!ev_document_can_get_text (ev_view->document)) {
 721                 return;
 722         }
 723
 724         g_mutex_lock (EV_DOC_MUTEX);
 725         text = ev_document_get_text (ev_view->document,
 726                                      ev_view->current_page,
 727                                      &ev_view->selection);
 728         g_mutex_unlock (EV_DOC_MUTEX);
 729         gtk_selection_data_set_text (selection_data, text, -1);
 730 }
 731
 732 static void
 733 ev_view_primary_clear_cb (GtkClipboard *clipboard,
 734                           gpointer      data)
 735 {
 736         EvView *ev_view = EV_VIEW (data);
 737
 738         ev_view->has_selection = FALSE;
 739 }
 740
 741 static void
 742 ev_view_update_primary_selection (EvView *ev_view)
 743 {
 744         GtkClipboard *clipboard;
 745
 746         clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view),
 747                                               GDK_SELECTION_PRIMARY);
 748
 749         if (ev_view->has_selection) {
 750                 if (!gtk_clipboard_set_with_owner (clipboard,
 751                                                    targets,
 752                                                    G_N_ELEMENTS (targets),
 753                                                    ev_view_primary_get_cb,
 754                                                    ev_view_primary_clear_cb,
 755                                                    G_OBJECT (ev_view)))
 756                         ev_view_primary_clear_cb (clipboard, ev_view);
 757         } else {
 758                 if (gtk_clipboard_get_owner (clipboard) == G_OBJECT (ev_view))
 759                         gtk_clipboard_clear (clipboard);
 760         }
 761 }
 762
 763 static gboolean
 764 ev_view_button_press_event (GtkWidget      *widget,
 765                             GdkEventButton *event)
 766 {
 767         EvView *view = EV_VIEW (widget);
 768
 769         if (!GTK_WIDGET_HAS_FOCUS (widget)) {
 770                 gtk_widget_grab_focus (widget);
 771         }
 772
 773         view->pressed_button = event->button;
 774
 775         switch (event->button) {
 776                 case 1:
 777                         if (view->has_selection) {
 778                                 view->has_selection = FALSE;
 779                                 gtk_widget_queue_draw (widget);
 780                         }
 781
 782                         view->selection_start.x = event->x;
 783                         view->selection_start.y = event->y;
 784                         break;
 785         }
 786
 787         return TRUE;
 788 }
 789
 790 static char *
 791 status_message_from_link (EvView *view, EvLink *link)
 792 {
 793         EvLinkType type;
 794         char *msg = NULL;
 795         char *page_label;
 796
 797         type = ev_link_get_link_type (link);
 798
 799         switch (type) {
 800                 case EV_LINK_TYPE_TITLE:
 801                         if (ev_link_get_title (link))
 802                                 msg = g_strdup (ev_link_get_title (link));
 803                         break;
 804                 case EV_LINK_TYPE_PAGE:
 805                         page_label = ev_page_cache_get_page_label (view->page_cache, ev_link_get_page (link));
 806                         msg = g_strdup_printf (_("Go to page %s"), page_label);
 807                         g_free (page_label);
 808                         break;
 809                 case EV_LINK_TYPE_EXTERNAL_URI:
 810                         msg = g_strdup (ev_link_get_uri (link));
 811                         break;
 812                 default:
 813                         break;
 814         }
 815
 816         return msg;
 817 }
 818
 819 static void
 820 ev_view_set_status (EvView *view, const char *message)
 821 {
 822         g_return_if_fail (EV_IS_VIEW (view));
 823
 824         if (message != view->status) {
 825                 g_free (view->status);
 826                 view->status = g_strdup (message);
 827                 g_object_notify (G_OBJECT (view), "status");
 828         }
 829 }
 830
 831 static void
 832 ev_view_set_find_status (EvView *view, const char *message)
 833 {
 834         g_return_if_fail (EV_IS_VIEW (view));
 835
 836         g_free (view->find_status);
 837         view->find_status = g_strdup (message);
 838         g_object_notify (G_OBJECT (view), "find-status");
 839 }
 840
 841 static GdkCursor *
 842 ev_view_create_invisible_cursor(void)
 843 {
 844        GdkBitmap *empty;
 845        GdkColor black = { 0, 0, 0, 0 };
 846        static char bits[] = { 0x00 };
 847
 848        empty = gdk_bitmap_create_from_data (NULL, bits, 1, 1);
 849
 850        return gdk_cursor_new_from_pixmap (empty, empty, &black, &black, 0, 0);
 851 }
 852
 853 static void
 854 ev_view_set_cursor (EvView *view, EvViewCursor new_cursor)
 855 {
 856         GdkCursor *cursor = NULL;
 857         GdkDisplay *display;
 858         GtkWidget *widget;
 859
 860         if (view->cursor == new_cursor) {
 861                 return;
 862         }
 863
 864         widget = gtk_widget_get_toplevel (GTK_WIDGET (view));
 865         display = gtk_widget_get_display (widget);
 866         view->cursor = new_cursor;
 867
 868         switch (new_cursor) {
 869                 case EV_VIEW_CURSOR_NORMAL:
 870                         gdk_window_set_cursor (widget->window, NULL);
 871                         break;
 872                 case EV_VIEW_CURSOR_LINK:
 873                         cursor = gdk_cursor_new_for_display (display, GDK_HAND2);
 874                         break;
 875                 case EV_VIEW_CURSOR_WAIT:
 876                         cursor = gdk_cursor_new_for_display (display, GDK_WATCH);
 877                         break;
 878                 case EV_VIEW_CURSOR_HIDDEN:
 879                         cursor = ev_view_create_invisible_cursor ();
 880                         break;
 881
 882         }
 883
 884         if (cursor) {
 885                 gdk_window_set_cursor (widget->window, cursor);
 886                 gdk_cursor_unref (cursor);
 887                 gdk_flush();
 888         }
 889 }
 890
 891
 892 static void
 893 find_page_at_location (EvView  *view,
 894                        gdouble  x,
 895                        gdouble  y,
 896                        gint    *page,
 897                        gint    *x_offset,
 898                        gint    *y_offset)
 899 {
 900         gint width, height;
 901
 902         ev_page_cache_get_size (view->page_cache,
 903                                 view->current_page,
 904                                 view->scale,
 905                                 &width, &height);
 906
 907         x -= (view->border.left + view->spacing);
 908         y -= (view->border.top + view->spacing);
 909
 910         if ((x < 0) || (y < 0) ||
 911             (x >= width) || (y >= height)) {
 912                 *page = -1;
 913                 return;
 914         }
 915         *page = view->current_page;
 916         *x_offset = (gint) x;
 917         *y_offset = (gint) y;
 918 }
 919
 920 static EvLink *
 921 get_link_at_location (EvView  *view,
 922                       gdouble  x,
 923                       gdouble  y)
 924 {
 925         gint page;
 926         gint x_offset, y_offset;
 927         GList *link_mapping;
 928
 929         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
 930         if (page == -1)
 931                 return NULL;
 932
 933         link_mapping = ev_pixbuf_cache_get_link_mapping (view->pixbuf_cache, page);
 934
 935         return ev_link_mapping_find (link_mapping, x_offset /view->scale, y_offset /view->scale);
 936 }
 937
 938
 939 static gboolean
 940 ev_view_motion_notify_event (GtkWidget      *widget,
 941                              GdkEventMotion *event)
 942 {
 943         EvView *view = EV_VIEW (widget);
 944
 945         if (view->pressed_button > 0) {
 946                 GdkRectangle selection;
 947
 948                 view->has_selection = TRUE;
 949                 selection.x = MIN (view->selection_start.x, event->x);
 950                 selection.y = MIN (view->selection_start.y, event->y);
 951                 selection.width = ABS (view->selection_start.x - event->x) + 1;
 952                 selection.height = ABS (view->selection_start.y - event->y) + 1;
 953                 view_rect_to_doc_rect (view, &selection, &view->selection);
 954
 955                 gtk_widget_queue_draw (widget);
 956         } else if (view->document) {
 957                 EvLink *link;
 958
 959                 link = get_link_at_location (view, event->x, event->y);
 960                 if (link) {
 961                         char *msg;
 962
 963                         msg = status_message_from_link (view, link);
 964                         ev_view_set_status (view, msg);
 965                         ev_view_set_cursor (view, EV_VIEW_CURSOR_LINK);
 966                         g_free (msg);
 967                 } else {
 968                         ev_view_set_status (view, NULL);
 969                         if (view->cursor == EV_VIEW_CURSOR_LINK) {
 970                                 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
 971                         }
 972                 }
 973         }
 974
 975         return TRUE;
 976 }
 977
 978 /* FIXME: standardize this sometime */
 979 static void
 980 go_to_link (EvView *view, EvLink *link)
 981 {
 982         EvLinkType type;
 983         const char *uri;
 984         int page;
 985
 986         type = ev_link_get_link_type (link);
 987
 988         switch (type) {
 989                 case EV_LINK_TYPE_TITLE:
 990                         break;
 991                 case EV_LINK_TYPE_PAGE:
 992                         page = ev_link_get_page (link);
 993                         ev_page_cache_set_current_page (view->page_cache, page);
 994                         break;
 995                 case EV_LINK_TYPE_EXTERNAL_URI:
 996                         uri = ev_link_get_uri (link);
 997                         gnome_vfs_url_show (uri);
 998                         break;
 999         }
1000 }
1001
1002
1003 static gboolean
1004 ev_view_button_release_event (GtkWidget      *widget,
1005                               GdkEventButton *event)
1006 {
1007         EvView *view = EV_VIEW (widget);
1008
1009         view->pressed_button = -1;
1010
1011         if (view->has_selection) {
1012                 ev_view_update_primary_selection (view);
1013         } else if (view->document) {
1014                 EvLink *link;
1015
1016                 link = get_link_at_location (view, event->x, event->y);
1017                 if (link) {
1018                         go_to_link (view, link);
1019                 }
1020         }
1021
1022         return FALSE;
1023 }
1024
1025 static void
1026 on_adjustment_value_changed (GtkAdjustment  *adjustment,
1027                              EvView *view)
1028 {
1029         view_update_adjustments (view);
1030 }
1031
1032 static void
1033 set_scroll_adjustment (EvView *view,
1034                        GtkOrientation  orientation,
1035                        GtkAdjustment  *adjustment)
1036 {
1037         GtkAdjustment **to_set;
1038
1039         if (orientation == GTK_ORIENTATION_HORIZONTAL)
1040                 to_set = &view->hadjustment;
1041         else
1042                 to_set = &view->vadjustment;
1043
1044         if (*to_set != adjustment) {
1045                 if (*to_set) {
1046                         g_signal_handlers_disconnect_by_func (*to_set,
1047                                                               (gpointer) on_adjustment_value_changed,
1048                                                               view);
1049                         g_object_unref (*to_set);
1050                 }
1051
1052                 *to_set = adjustment;
1053                 view_set_adjustment_values (view, orientation);
1054
1055                 if (*to_set) {
1056                         g_object_ref (*to_set);
1057                         g_signal_connect (*to_set, "value_changed",
1058                                           G_CALLBACK (on_adjustment_value_changed), view);
1059                 }
1060         }
1061 }
1062
1063 static void
1064 ev_view_set_scroll_adjustments (EvView *view,
1065                                 GtkAdjustment  *hadjustment,
1066                                 GtkAdjustment  *vadjustment)
1067 {
1068         set_scroll_adjustment (view, GTK_ORIENTATION_HORIZONTAL, hadjustment);
1069         set_scroll_adjustment (view, GTK_ORIENTATION_VERTICAL, vadjustment);
1070
1071         view_update_adjustments (view);
1072 }
1073
1074 static void
1075 add_scroll_binding_keypad (GtkBindingSet  *binding_set,
1076                            guint           keyval,
1077                            GtkScrollType   scroll,
1078                            gboolean        horizontal)
1079 {
1080   guint keypad_keyval = keyval - GDK_Left + GDK_KP_Left;
1081
1082   gtk_binding_entry_add_signal (binding_set, keyval, 0,
1083                                 "scroll_view", 2,
1084                                 GTK_TYPE_SCROLL_TYPE, scroll,
1085                                 G_TYPE_BOOLEAN, horizontal);
1086   gtk_binding_entry_add_signal (binding_set, keypad_keyval, 0,
1087                                 "scroll_view", 2,
1088                                 GTK_TYPE_SCROLL_TYPE, scroll,
1089                                 G_TYPE_BOOLEAN, horizontal);
1090 }
1091
1092 static void
1093 add_scroll_binding_shifted (GtkBindingSet  *binding_set,
1094                             guint           keyval,
1095                             GtkScrollType   scroll_normal,
1096                             GtkScrollType   scroll_shifted,
1097                             gboolean        horizontal)
1098 {
1099   gtk_binding_entry_add_signal (binding_set, keyval, 0,
1100                                 "scroll_view", 2,
1101                                 GTK_TYPE_SCROLL_TYPE, scroll_normal,
1102                                 G_TYPE_BOOLEAN, horizontal);
1103   gtk_binding_entry_add_signal (binding_set, keyval, GDK_SHIFT_MASK,
1104                                 "scroll_view", 2,
1105                                 GTK_TYPE_SCROLL_TYPE, scroll_shifted,
1106                                 G_TYPE_BOOLEAN, horizontal);
1107 }
1108
1109 static void
1110 ev_view_jump (EvView        *view,
1111               GtkScrollType  scroll)
1112 {
1113         GtkAdjustment *adjustment;
1114         double value, increment;
1115         gboolean first_page = FALSE;
1116         gboolean last_page = FALSE;
1117
1118         /* Assign values for increment and vertical adjustment */
1119         adjustment = view->vadjustment;
1120         increment = adjustment->page_size * 0.75;
1121         value = adjustment->value;
1122
1123         /* Assign boolean for first and last page */
1124         if (view->current_page == 0)
1125                 first_page = TRUE;
1126         if (view->current_page == ev_page_cache_get_n_pages (view->page_cache) - 1)
1127                 last_page = TRUE;
1128
1129         switch (scroll) {
1130                 case EV_SCROLL_PAGE_BACKWARD:
1131                         /* Do not jump backwards if at the first page */
1132                         if (value == (adjustment->lower) && first_page) {
1133                                 /* Do nothing */
1134                                 /* At the top of a page, assign the upper bound limit of previous page */
1135                         } else if (value == (adjustment->lower)) {
1136                                 value = adjustment->upper - adjustment->page_size;
1137                                 ev_page_cache_set_current_page (view->page_cache, view->current_page - 1);
1138                                 /* Jump to the top */
1139                         } else {
1140                                 value = MAX (value - increment, adjustment->lower);
1141                         }
1142                         break;
1143                 case EV_SCROLL_PAGE_FORWARD:
1144                         /* Do not jump forward if at the last page */
1145                         if (value == (adjustment->upper - adjustment->page_size) && last_page) {
1146                                 /* Do nothing */
1147                         /* At the bottom of a page, assign the lower bound limit of next page */
1148                         } else if (value == (adjustment->upper - adjustment->page_size)) {
1149                                 value = 0;
1150                                 ev_page_cache_set_current_page (view->page_cache, view->current_page + 1);
1151                         /* Jump to the bottom */
1152                         } else {
1153                                 value = MIN (value + increment, adjustment->upper - adjustment->page_size);
1154                         }
1155                         break;
1156                 default:
1157                         break;
1158         }
1159
1160         gtk_adjustment_set_value (adjustment, value);
1161 }
1162
1163 static void
1164 ev_view_scroll_view (EvView *view,
1165                      GtkScrollType scroll,
1166                      gboolean horizontal)
1167 {
1168         if (scroll == GTK_SCROLL_PAGE_BACKWARD) {
1169                 ev_page_cache_prev_page (view->page_cache);
1170         } else if (scroll == GTK_SCROLL_PAGE_FORWARD) {
1171                 ev_page_cache_next_page (view->page_cache);
1172         } else if (scroll == EV_SCROLL_PAGE_BACKWARD || scroll == EV_SCROLL_PAGE_FORWARD) {
1173                 ev_view_jump (view, scroll);
1174         } else {
1175                 GtkAdjustment *adjustment;
1176                 double value;
1177
1178                 if (horizontal) {
1179                         adjustment = view->hadjustment;
1180                 } else {
1181                         adjustment = view->vadjustment;
1182                 }
1183
1184                 value = adjustment->value;
1185
1186                 switch (scroll) {
1187                         case GTK_SCROLL_STEP_BACKWARD:
1188                                 value -= adjustment->step_increment;
1189                                 break;
1190                         case GTK_SCROLL_STEP_FORWARD:
1191                                 value += adjustment->step_increment;
1192                                 break;
1193                         default:
1194                                 break;
1195                 }
1196
1197                 value = CLAMP (value, adjustment->lower,
1198                                adjustment->upper - adjustment->page_size);
1199
1200                 gtk_adjustment_set_value (adjustment, value);
1201         }
1202 }
1203
1204 static void
1205 ev_view_set_property (GObject *object,
1206                       guint prop_id,
1207                       const GValue *value,
1208                       GParamSpec *pspec)
1209 {
1210         switch (prop_id)
1211         {
1212                 /* Read only */
1213                 case PROP_STATUS:
1214                 case PROP_FIND_STATUS:
1215                         break;
1216         }
1217 }
1218
1219 static void
1220 ev_view_get_property (GObject *object,
1221                       guint prop_id,
1222                       GValue *value,
1223                       GParamSpec *pspec)
1224 {
1225         EvView *view = EV_VIEW (object);
1226
1227         switch (prop_id)
1228         {
1229                 case PROP_STATUS:
1230                         g_value_set_string (value, view->status);
1231                         break;
1232                 case PROP_FIND_STATUS:
1233                         g_value_set_string (value, view->status);
1234                         break;
1235         }
1236 }
1237
1238 static void
1239 ev_view_class_init (EvViewClass *class)
1240 {
1241         GObjectClass *object_class = G_OBJECT_CLASS (class);
1242         GtkObjectClass *gtk_object_class = GTK_OBJECT_CLASS (class);
1243         GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
1244         GtkBindingSet *binding_set;
1245
1246         object_class->finalize = ev_view_finalize;
1247         object_class->set_property = ev_view_set_property;
1248         object_class->get_property = ev_view_get_property;
1249
1250         widget_class->expose_event = ev_view_expose_event;
1251         widget_class->button_press_event = ev_view_button_press_event;
1252         widget_class->motion_notify_event = ev_view_motion_notify_event;
1253         widget_class->button_release_event = ev_view_button_release_event;
1254         widget_class->size_request = ev_view_size_request;
1255         widget_class->size_allocate = ev_view_size_allocate;
1256         widget_class->realize = ev_view_realize;
1257         widget_class->unrealize = ev_view_unrealize;
1258         gtk_object_class->destroy = ev_view_destroy;
1259
1260         class->set_scroll_adjustments = ev_view_set_scroll_adjustments;
1261         class->scroll_view = ev_view_scroll_view;
1262
1263         widget_class->set_scroll_adjustments_signal =  g_signal_new ("set-scroll-adjustments",
1264                                                                      G_OBJECT_CLASS_TYPE (object_class),
1265                                                                      G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1266                                                                      G_STRUCT_OFFSET (EvViewClass, set_scroll_adjustments),
1267                                                                      NULL, NULL,
1268                                                                      ev_marshal_VOID__OBJECT_OBJECT,
1269                                                                      G_TYPE_NONE, 2,
1270                                                                      GTK_TYPE_ADJUSTMENT,
1271                                                                      GTK_TYPE_ADJUSTMENT);
1272
1273         g_signal_new ("scroll_view",
1274                       G_TYPE_FROM_CLASS (object_class),
1275                       G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1276                       G_STRUCT_OFFSET (EvViewClass, scroll_view),
1277                       NULL, NULL,
1278                       ev_marshal_VOID__ENUM_BOOLEAN,
1279                       G_TYPE_NONE, 2,
1280                       GTK_TYPE_SCROLL_TYPE,
1281                       G_TYPE_BOOLEAN);
1282
1283         g_object_class_install_property (object_class,
1284                                          PROP_STATUS,
1285                                          g_param_spec_string ("status",
1286                                                               "Status Message",
1287                                                               "The status message",
1288                                                               NULL,
1289                                                               G_PARAM_READABLE));
1290
1291         g_object_class_install_property (object_class,
1292                                          PROP_FIND_STATUS,
1293                                          g_param_spec_string ("find-status",
1294                                                               "Find Status Message",
1295                                                               "The find status message",
1296                                                               NULL,
1297                                                               G_PARAM_READABLE));
1298
1299         binding_set = gtk_binding_set_by_class (class);
1300
1301         add_scroll_binding_keypad (binding_set, GDK_Left,  GTK_SCROLL_STEP_BACKWARD, TRUE);
1302         add_scroll_binding_keypad (binding_set, GDK_Right, GTK_SCROLL_STEP_FORWARD,  TRUE);
1303         add_scroll_binding_keypad (binding_set, GDK_Up,    GTK_SCROLL_STEP_BACKWARD, FALSE);
1304         add_scroll_binding_keypad (binding_set, GDK_Down,  GTK_SCROLL_STEP_FORWARD,  FALSE);
1305
1306         add_scroll_binding_keypad (binding_set, GDK_Page_Up,   GTK_SCROLL_PAGE_BACKWARD, FALSE);
1307         add_scroll_binding_keypad (binding_set, GDK_Page_Down, GTK_SCROLL_PAGE_FORWARD,  FALSE);
1308
1309         add_scroll_binding_shifted (binding_set, GDK_space, EV_SCROLL_PAGE_FORWARD, EV_SCROLL_PAGE_BACKWARD, FALSE);
1310         add_scroll_binding_shifted (binding_set, GDK_BackSpace, EV_SCROLL_PAGE_BACKWARD, EV_SCROLL_PAGE_FORWARD, FALSE);
1311 }
1312
1313 void
1314 ev_view_set_spacing (EvView     *view,
1315                      int         spacing)
1316 {
1317         g_return_if_fail (EV_IS_VIEW (view));
1318
1319         view->spacing = spacing;
1320
1321         if (view->document) {
1322                 gtk_widget_queue_resize (GTK_WIDGET (view));
1323         }
1324 }
1325
1326 static void
1327 ev_view_init (EvView *view)
1328 {
1329         GTK_WIDGET_SET_FLAGS (view, GTK_CAN_FOCUS);
1330
1331         view->spacing = 0;
1332         view->scale = 1.0;
1333         view->current_page = 0;
1334         view->pressed_button = -1;
1335         view->cursor = EV_VIEW_CURSOR_NORMAL;
1336         view->show_border = TRUE;
1337 }
1338
1339 static void
1340 update_find_status_message (EvView *view)
1341 {
1342         char *message;
1343
1344 //      g_mutex_lock (EV_DOC_MUTEX);
1345         if (view->current_page == view->find_page) {
1346                 int results;
1347
1348 //              g_mutex_lock (EV_DOC_MUTEX);
1349                 results = ev_document_find_get_n_results
1350                                 (EV_DOCUMENT_FIND (view->document),
1351                                  view->current_page);
1352 //              g_mutex_unlock (EV_DOC_MUTEX);
1353                 /* TRANS: Sometimes this could be better translated as
1354                    "%d hit(s) on this page".  Therefore this string
1355                    contains plural cases. */
1356                 message = g_strdup_printf (ngettext ("%d found on this page",
1357                                                      "%d found on this page",
1358                                                      results),
1359                                            results);
1360         } else {
1361                 double percent;
1362
1363                 g_mutex_lock (EV_DOC_MUTEX);
1364                 percent = ev_document_find_get_progress
1365                                 (EV_DOCUMENT_FIND (view->document));
1366                 g_mutex_unlock (EV_DOC_MUTEX);
1367                 if (percent >= (1.0 - 1e-10)) {
1368                         message = g_strdup (_("Not found"));
1369                 } else {
1370                         message = g_strdup_printf (_("%3d%% remaining to search"),
1371                                                    (int) ((1.0 - percent) * 100));
1372                 }
1373
1374         }
1375 //      g_mutex_unlock (EV_DOC_MUTEX);
1376
1377         ev_view_set_find_status (view, message);
1378 //      g_free (message);
1379 }
1380
1381 #define MARGIN 5
1382
1383 static void
1384 ensure_rectangle_is_visible (EvView *view, GdkRectangle *rect)
1385 {
1386         GtkWidget *widget = GTK_WIDGET (view);
1387         GtkAdjustment *adjustment;
1388         int value;
1389
1390         adjustment = view->vadjustment;
1391
1392         if (rect->y < adjustment->value) {
1393                 value = MAX (adjustment->lower, rect->y - MARGIN);
1394                 gtk_adjustment_set_value (view->vadjustment, value);
1395         } else if (rect->y + rect->height >
1396                    adjustment->value + widget->allocation.height) {
1397                 value = MIN (adjustment->upper, rect->y + rect->height -
1398                              widget->allocation.height + MARGIN);
1399                 gtk_adjustment_set_value (view->vadjustment, value);
1400         }
1401
1402         adjustment = view->hadjustment;
1403
1404         if (rect->x < adjustment->value) {
1405                 value = MAX (adjustment->lower, rect->x - MARGIN);
1406                 gtk_adjustment_set_value (view->hadjustment, value);
1407         } else if (rect->x + rect->height >
1408                    adjustment->value + widget->allocation.width) {
1409                 value = MIN (adjustment->upper, rect->x + rect->width -
1410                              widget->allocation.width + MARGIN);
1411                 gtk_adjustment_set_value (view->hadjustment, value);
1412         }
1413 }
1414
1415 static void
1416 jump_to_find_result (EvView *view)
1417 {
1418         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
1419         EvRectangle rect;
1420         GdkRectangle view_rect;
1421         int n_results;
1422
1423         g_mutex_lock (EV_DOC_MUTEX);
1424         n_results = ev_document_find_get_n_results (find, view->current_page);
1425         g_mutex_unlock (EV_DOC_MUTEX);
1426
1427         if (n_results > view->find_result) {
1428                 g_mutex_lock (EV_DOC_MUTEX);
1429                 ev_document_find_get_result
1430                         (find, view->current_page, view->find_result, &rect);
1431                 g_mutex_unlock (EV_DOC_MUTEX);
1432
1433                 doc_rect_to_view_rect (view, &rect, &view_rect);
1434                 ensure_rectangle_is_visible (view, &view_rect);
1435         }
1436 }
1437
1438 static void
1439 jump_to_find_page (EvView *view)
1440 {
1441         int n_pages, i;
1442
1443         n_pages = ev_page_cache_get_n_pages (view->page_cache);
1444
1445         for (i = 0; i < n_pages; i++) {
1446                 int has_results;
1447                 int page;
1448
1449                 page = i + view->find_page;
1450                 if (page >= n_pages) {
1451                         page = page - n_pages;
1452                 }
1453
1454                 //              g_mutex_lock (EV_DOC_MUTEX);
1455                 has_results = ev_document_find_page_has_results
1456                                 (EV_DOCUMENT_FIND (view->document), page);
1457                 if (has_results == -1) {
1458                         view->find_page = page;
1459                         break;
1460                 } else if (has_results == 1) {
1461                         ev_page_cache_set_current_page (view->page_cache, page);
1462                         jump_to_find_result (view);
1463                         break;
1464                 }
1465         }
1466 }
1467
1468 static void
1469 find_changed_cb (EvDocument *document, int page, EvView *view)
1470 {
1471         jump_to_find_page (view);
1472         jump_to_find_result (view);
1473         update_find_status_message (view);
1474
1475         if (view->current_page == page)
1476                 gtk_widget_queue_draw (GTK_WIDGET (view));
1477 }
1478 /*** Public API ***/
1479
1480 GtkWidget*
1481 ev_view_new (void)
1482 {
1483         return g_object_new (EV_TYPE_VIEW, NULL);
1484 }
1485
1486 static void
1487 job_finished_cb (EvPixbufCache *pixbuf_cache,
1488                  EvView        *view)
1489 {
1490         gtk_widget_queue_draw (GTK_WIDGET (view));
1491 }
1492
1493
1494 static void
1495 page_changed_cb (EvPageCache *page_cache,
1496                  int          new_page,
1497                  EvView      *view)
1498 {
1499         int old_page = view->current_page;
1500         int old_width, old_height;
1501         int new_width, new_height;
1502
1503         if (old_page == new_page)
1504                 return;
1505
1506         ev_page_cache_get_size (page_cache,
1507                                 old_page,
1508                                 view->scale,
1509                                 &old_width, &old_height);
1510
1511         view->current_page = new_page;
1512         view->has_selection = FALSE;
1513
1514         compute_zoom_factor (view);
1515
1516         ev_page_cache_get_size (page_cache,
1517                                 new_page,
1518                                 view->scale,
1519                                 &new_width, &new_height);
1520
1521         compute_border (view, new_width, new_height, &(view->border));
1522
1523         ev_pixbuf_cache_set_page_range (view->pixbuf_cache,
1524                                         view->current_page,
1525                                         view->current_page,
1526                                         view->scale);
1527
1528         if (new_width != old_width || new_height != old_height)
1529                 gtk_widget_queue_resize (GTK_WIDGET (view));
1530         else
1531                 gtk_widget_queue_draw (GTK_WIDGET (view));
1532
1533         gtk_adjustment_set_value (view->vadjustment,
1534                                   view->vadjustment->lower);
1535
1536         if (EV_IS_DOCUMENT_FIND (view->document)) {
1537                 view->find_page = new_page;
1538                 view->find_result = 0;
1539                 update_find_status_message (view);
1540         }
1541 }
1542
1543 void
1544 ev_view_set_document (EvView     *view,
1545                       EvDocument *document)
1546 {
1547         g_return_if_fail (EV_IS_VIEW (view));
1548
1549         if (document != view->document) {
1550                 if (view->document) {
1551                         g_signal_handlers_disconnect_by_func (view->document,
1552                                                               find_changed_cb,
1553                                                               view);
1554                         g_object_unref (view->document);
1555                         view->page_cache = NULL;
1556
1557                 }
1558
1559                 view->document = document;
1560                 view->find_page = 0;
1561                 view->find_result = 0;
1562
1563                 if (view->document) {
1564                         g_object_ref (view->document);
1565                         if (EV_IS_DOCUMENT_FIND (view->document)) {
1566                                 g_signal_connect (view->document,
1567                                                   "find_changed",
1568                                                   G_CALLBACK (find_changed_cb),
1569                                                   view);
1570                         }
1571                         view->page_cache = ev_document_get_page_cache (view->document);
1572                         g_signal_connect (view->page_cache, "page-changed", G_CALLBACK (page_changed_cb), view);
1573                         view->pixbuf_cache = ev_pixbuf_cache_new (view->document);
1574                         g_signal_connect (view->pixbuf_cache, "job-finished", G_CALLBACK (job_finished_cb), view);
1575                 }
1576
1577                 gtk_widget_queue_resize (GTK_WIDGET (view));
1578         }
1579 }
1580
1581 static void
1582 ev_view_zoom (EvView   *view,
1583               double    factor,
1584               gboolean  relative)
1585 {
1586         double scale;
1587
1588         if (relative)
1589                 scale = view->scale * factor;
1590         else
1591                 scale = factor;
1592
1593         scale = CLAMP (scale, MIN_SCALE, MAX_SCALE);
1594
1595         view->scale = scale;
1596         view->width = view->height = -1;
1597         gtk_widget_queue_resize (GTK_WIDGET (view));
1598 }
1599
1600 void
1601 ev_view_zoom_in (EvView *view)
1602 {
1603         ev_view_zoom (view, ZOOM_IN_FACTOR, TRUE);
1604 }
1605
1606 void
1607 ev_view_zoom_out (EvView *view)
1608 {
1609         ev_view_zoom (view, ZOOM_OUT_FACTOR, TRUE);
1610 }
1611
1612 void
1613 ev_view_set_size (EvView     *view,
1614                   int         width,
1615                   int         height)
1616 {
1617         if (!view->document) {
1618                 return;
1619         }
1620
1621         if (width != view->width || height != view->height) {
1622                 view->width = width;
1623                 view->height = height;
1624                 gtk_widget_queue_resize (GTK_WIDGET (view));
1625         }
1626 }
1627
1628 const char *
1629 ev_view_get_status (EvView *view)
1630 {
1631         g_return_val_if_fail (EV_IS_VIEW (view), NULL);
1632
1633         return view->status;
1634 }
1635
1636 const char *
1637 ev_view_get_find_status (EvView *view)
1638 {
1639         g_return_val_if_fail (EV_IS_VIEW (view), NULL);
1640
1641         return view->find_status;
1642 }
1643
1644 gboolean
1645 ev_view_can_find_next (EvView *view)
1646 {
1647         int n_results = 0;
1648
1649         if (EV_IS_DOCUMENT_FIND (view->document)) {
1650                 EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
1651
1652                 g_mutex_lock (EV_DOC_MUTEX);
1653                 n_results = ev_document_find_get_n_results (find, view->current_page);
1654                 g_mutex_unlock (EV_DOC_MUTEX);
1655         }
1656
1657         return n_results > 0;
1658 }
1659
1660 void
1661 ev_view_find_next (EvView *view)
1662 {
1663         EvPageCache *page_cache;
1664         int n_results, n_pages;
1665         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
1666
1667         page_cache = ev_document_get_page_cache (view->document);
1668         g_mutex_lock (EV_DOC_MUTEX);
1669         n_results = ev_document_find_get_n_results (find, view->current_page);
1670         g_mutex_unlock (EV_DOC_MUTEX);
1671
1672         n_pages = ev_page_cache_get_n_pages (page_cache);
1673
1674         view->find_result++;
1675
1676         if (view->find_result >= n_results) {
1677                 view->find_result = 0;
1678                 view->find_page++;
1679
1680                 if (view->find_page >= n_pages) {
1681                         view->find_page = 0;
1682                 }
1683
1684                 jump_to_find_page (view);
1685         } else {
1686                 jump_to_find_result (view);
1687                 gtk_widget_queue_draw (GTK_WIDGET (view));
1688         }
1689 }
1690
1691 void
1692 ev_view_find_previous (EvView *view)
1693 {
1694         int n_results, n_pages;
1695         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
1696         EvPageCache *page_cache;
1697
1698         page_cache = ev_document_get_page_cache (view->document);
1699
1700         g_mutex_lock (EV_DOC_MUTEX);
1701         n_results = ev_document_find_get_n_results (find, view->current_page);
1702         g_mutex_unlock (EV_DOC_MUTEX);
1703
1704         n_pages = ev_page_cache_get_n_pages (page_cache);
1705
1706         view->find_result--;
1707
1708         if (view->find_result < 0) {
1709                 view->find_result = 0;
1710                 view->find_page--;
1711
1712                 if (view->find_page < 0) {
1713                         view->find_page = n_pages - 1;
1714                 }
1715
1716                 jump_to_find_page (view);
1717         } else {
1718                 jump_to_find_result (view);
1719                 gtk_widget_queue_draw (GTK_WIDGET (view));
1720         }
1721 }
1722 void
1723 ev_view_hide_cursor (EvView *view)
1724 {
1725        ev_view_set_cursor (view, EV_VIEW_CURSOR_HIDDEN);
1726 }
1727
1728 void
1729 ev_view_show_cursor (EvView *view)
1730 {
1731        ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
1732 }