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 <stdlib.h>
  22 #include <math.h>
  23 #include <string.h>
  24 #include <gtk/gtkalignment.h>
  25 #include <glib/gi18n.h>
  26 #include <gtk/gtkbindings.h>
  27 #include <gtk/gtkselection.h>
  28 #include <gtk/gtkclipboard.h>
  29 #include <gdk/gdkkeysyms.h>
  30 #include <libgnomevfs/gnome-vfs-utils.h>
  31
  32 #include "ev-marshal.h"
  33 #include "ev-view.h"
  34 #include "ev-view-private.h"
  35 #include "ev-utils.h"
  36 #include "ev-selection.h"
  37 #include "ev-document-links.h"
  38 #include "ev-document-find.h"
  39 #include "ev-document-misc.h"
  40 #include "ev-debug.h"
  41 #include "ev-job-queue.h"
  42 #include "ev-page-cache.h"
  43 #include "ev-pixbuf-cache.h"
  44 #include "ev-tooltip.h"
  45
  46 #define EV_VIEW_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass), EV_TYPE_VIEW, EvViewClass))
  47 #define EV_IS_VIEW_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), EV_TYPE_VIEW))
  48 #define EV_VIEW_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj), EV_TYPE_VIEW, EvViewClass))
  49
  50
  51 enum {
  52         PROP_0,
  53         PROP_STATUS,
  54         PROP_FIND_STATUS,
  55         PROP_CONTINUOUS,
  56         PROP_DUAL_PAGE,
  57         PROP_FULLSCREEN,
  58         PROP_PRESENTATION,
  59         PROP_SIZING_MODE,
  60         PROP_ZOOM,
  61         PROP_ROTATION,
  62         PROP_HAS_SELECTION,
  63 };
  64
  65 enum {
  66         SIGNAL_BINDING_ACTIVATED,
  67         SIGNAL_ZOOM_INVALID,
  68         SIGNAL_EXTERNAL_LINK,
  69         SIGNAL_POPUP_MENU,
  70         N_SIGNALS,
  71 };
  72
  73 enum {
  74         TARGET_STRING,
  75         TARGET_TEXT,
  76         TARGET_COMPOUND_TEXT,
  77         TARGET_UTF8_STRING,
  78         TARGET_TEXT_BUFFER_CONTENTS
  79 };
  80
  81 static const GtkTargetEntry targets[] = {
  82         { "STRING", 0, TARGET_STRING },
  83         { "TEXT",   0, TARGET_TEXT },
  84         { "COMPOUND_TEXT", 0, TARGET_COMPOUND_TEXT },
  85         { "UTF8_STRING", 0, TARGET_UTF8_STRING },
  86 };
  87
  88 static guint signals[N_SIGNALS];
  89
  90 typedef enum {
  91         EV_VIEW_FIND_NEXT,
  92         EV_VIEW_FIND_PREV
  93 } EvViewFindDirection;
  94
  95 #define ZOOM_IN_FACTOR  1.2
  96 #define ZOOM_OUT_FACTOR (1.0/ZOOM_IN_FACTOR)
  97
  98 #define MIN_SCALE 0.05409
  99 #define MAX_SCALE 4.0
 100
 101 #define SCROLL_TIME 150
 102
 103 /*** Scrolling ***/
 104 static void       scroll_to_current_page                     (EvView *view,
 105                                                               GtkOrientation orientation);
 106 static void       ev_view_set_scroll_adjustments             (EvView             *view,
 107                                                               GtkAdjustment      *hadjustment,
 108                                                               GtkAdjustment      *vadjustment);
 109 static void       view_update_range_and_current_page         (EvView             *view);
 110 static void       set_scroll_adjustment                      (EvView             *view,
 111                                                               GtkOrientation      orientation,
 112                                                               GtkAdjustment      *adjustment);
 113 static void       ev_view_set_scroll_adjustments             (EvView             *view,
 114                                                               GtkAdjustment      *hadjustment,
 115                                                               GtkAdjustment      *vadjustment);
 116 static void       add_scroll_binding_keypad                  (GtkBindingSet      *binding_set,
 117                                                               guint               keyval,
 118                                                               GdkModifierType modifiers,
 119                                                               EvScrollType       scroll,
 120                                                               gboolean            horizontal);
 121 static void       ensure_rectangle_is_visible                (EvView             *view,
 122                                                               GdkRectangle       *rect);
 123
 124 /*** Geometry computations ***/
 125 static void       compute_border                             (EvView             *view,
 126                                                               int                 width,
 127                                                               int                 height,
 128                                                               GtkBorder          *border);
 129 static void       get_page_y_offset                          (EvView *view,
 130                                                               int page,
 131                                                               double zoom,
 132                                                               int *y_offset);
 133 static gboolean   get_page_extents                           (EvView             *view,
 134                                                               gint                page,
 135                                                               GdkRectangle       *page_area,
 136                                                               GtkBorder          *border);
 137 static void       view_rect_to_doc_rect                      (EvView             *view,
 138                                                               GdkRectangle       *view_rect,
 139                                                               GdkRectangle       *page_area,
 140                                                               EvRectangle        *doc_rect);
 141 static void       doc_rect_to_view_rect                      (EvView             *view,
 142                                                               int                 page,
 143                                                               EvRectangle        *doc_rect,
 144                                                               GdkRectangle       *view_rect);
 145 static void       find_page_at_location                      (EvView             *view,
 146                                                               gdouble             x,
 147                                                               gdouble             y,
 148                                                               gint               *page,
 149                                                               gint               *x_offset,
 150                                                               gint               *y_offset);
 151 static gboolean  doc_point_to_view_point                     (EvView       *view,
 152                                                               int           page,
 153                                                               EvPoint      *doc_point,
 154                                                               GdkPoint     *view_point);
 155 /*** Hyperrefs ***/
 156 static EvLink *   ev_view_get_link_at_location               (EvView  *view,
 157                                                               gdouble  x,
 158                                                               gdouble  y);
 159 static char*      tip_from_link                              (EvView             *view,
 160                                                               EvLink             *link);
 161 static void       handle_link_over_xy                        (EvView *view,
 162                                                               gint x,
 163                                                               gint y);
 164 /*** GtkWidget implementation ***/
 165 static void       ev_view_size_request_continuous_dual_page  (EvView             *view,
 166                                                               GtkRequisition     *requisition);
 167 static void       ev_view_size_request_continuous            (EvView             *view,
 168                                                               GtkRequisition     *requisition);
 169 static void       ev_view_size_request_dual_page             (EvView             *view,
 170                                                               GtkRequisition     *requisition);
 171 static void       ev_view_size_request_single_page           (EvView             *view,
 172                                                               GtkRequisition     *requisition);
 173 static void       ev_view_size_request                       (GtkWidget          *widget,
 174                                                               GtkRequisition     *requisition);
 175 static void       ev_view_size_allocate                      (GtkWidget          *widget,
 176                                                               GtkAllocation      *allocation);
 177 static void       ev_view_realize                            (GtkWidget          *widget);
 178 static gboolean   ev_view_scroll_event                       (GtkWidget          *widget,
 179                                                               GdkEventScroll     *event);
 180 static gboolean   ev_view_expose_event                       (GtkWidget          *widget,
 181                                                               GdkEventExpose     *event);
 182 static gboolean   ev_view_popup_menu                         (GtkWidget          *widget);
 183 static gboolean   ev_view_button_press_event                 (GtkWidget          *widget,
 184                                                               GdkEventButton     *event);
 185 static gboolean   ev_view_motion_notify_event                (GtkWidget          *widget,
 186                                                               GdkEventMotion     *event);
 187 static gboolean   ev_view_button_release_event               (GtkWidget          *widget,
 188                                                               GdkEventButton     *event);
 189 static gboolean   ev_view_enter_notify_event                 (GtkWidget          *widget,
 190                                                               GdkEventCrossing   *event);
 191 static gboolean   ev_view_leave_notify_event                 (GtkWidget          *widget,
 192                                                               GdkEventCrossing   *event);
 193 static void       ev_view_style_set                          (GtkWidget          *widget,
 194                                                               GtkStyle           *old_style);
 195
 196 static AtkObject *ev_view_get_accessible                     (GtkWidget *widget);
 197
 198 /*** Drawing ***/
 199 static guint32    ev_gdk_color_to_rgb                        (const GdkColor     *color);
 200 static void       draw_rubberband                            (GtkWidget          *widget,
 201                                                               GdkWindow          *window,
 202                                                               const GdkRectangle *rect,
 203                                                               guchar              alpha);
 204 static void       highlight_find_results                     (EvView             *view,
 205                                                               int                 page);
 206 static void       draw_one_page                              (EvView             *view,
 207                                                               gint                page,
 208                                                               GdkRectangle       *page_area,
 209                                                               GtkBorder          *border,
 210                                                               GdkRectangle       *expose_area,
 211                                                               gboolean           *page_ready);
 212 static void       draw_loading_text                          (EvView             *view,
 213                                                               GdkRectangle       *page_area,
 214                                                               GdkRectangle       *expose_area);
 215
 216 /*** Callbacks ***/
 217 static void       find_changed_cb                            (EvDocument         *document,
 218                                                               int                 page,
 219                                                               EvView             *view);
 220 static void       job_finished_cb                            (EvPixbufCache      *pixbuf_cache,
 221                                                               EvView             *view);
 222 static void       page_changed_cb                            (EvPageCache        *page_cache,
 223                                                               int                 new_page,
 224                                                               EvView             *view);
 225 static void       on_adjustment_value_changed                (GtkAdjustment      *adjustment,
 226                                                               EvView             *view);
 227
 228 /*** GObject ***/
 229 static void       ev_view_finalize                           (GObject            *object);
 230 static void       ev_view_destroy                            (GtkObject          *object);
 231 static void       ev_view_set_property                       (GObject            *object,
 232                                                               guint               prop_id,
 233                                                               const GValue       *value,
 234                                                               GParamSpec         *pspec);
 235 static void       ev_view_get_property                       (GObject            *object,
 236                                                               guint               prop_id,
 237                                                               GValue             *value,
 238                                                               GParamSpec         *pspec);
 239 static void       ev_view_class_init                         (EvViewClass        *class);
 240 static void       ev_view_init                               (EvView             *view);
 241
 242 /*** Zoom and sizing ***/
 243 static double   zoom_for_size_fit_width                      (int doc_width,
 244                                                               int doc_height,
 245                                                               int target_width,
 246                                                               int target_height,
 247                                                               int vsb_width);
 248 static double   zoom_for_size_fit_height                     (int doc_width,
 249                                                               int doc_height,
 250                                                               int target_width,
 251                                                               int target_height,
 252                                                               int vsb_height);
 253 static double   zoom_for_size_best_fit                       (int doc_width,
 254                                                               int doc_height,
 255                                                               int target_width,
 256                                                               int target_height,
 257                                                               int vsb_width,
 258                                                               int hsb_width);
 259 static void     ev_view_zoom_for_size_presentation           (EvView *view,
 260                                                               int     width,
 261                                                               int     height);
 262 static void     ev_view_zoom_for_size_continuous_and_dual_page (EvView *view,
 263                                                                 int     width,
 264                                                                 int     height,
 265                                                                 int     vsb_width,
 266                                                                 int     hsb_height);
 267 static void     ev_view_zoom_for_size_continuous               (EvView *view,
 268                                                                 int     width,
 269                                                                 int     height,
 270                                                                 int     vsb_width,
 271                                                                 int     hsb_height);
 272 static void     ev_view_zoom_for_size_dual_page                (EvView *view,
 273                                                                 int     width,
 274                                                                 int     height,
 275                                                                 int     vsb_width,
 276                                                                 int     hsb_height);
 277 static void     ev_view_zoom_for_size_single_page              (EvView *view,
 278                                                                 int     width,
 279                                                                 int     height,
 280                                                                 int     vsb_width,
 281                                                                 int     hsb_height);
 282 /*** Cursors ***/
 283 static GdkCursor* ev_view_create_invisible_cursor            (void);
 284 static void       ev_view_set_cursor                         (EvView             *view,
 285                                                               EvViewCursor        new_cursor);
 286
 287 /*** Status messages ***/
 288 static void       ev_view_set_status                         (EvView             *view,
 289                                                               const char         *message);
 290 static void       update_find_status_message                 (EvView             *view,
 291                                                               gboolean            this_page);
 292 static void       ev_view_set_find_status                    (EvView             *view,
 293                                                               const char         *message);
 294 /*** Find ***/
 295 static void       jump_to_find_result                        (EvView             *view);
 296 static void       jump_to_find_page                          (EvView             *view,
 297                                                               EvViewFindDirection direction,
 298                                                               gint                shift);
 299
 300 /*** Selection ***/
 301 static void       compute_selections                         (EvView             *view,
 302                                                               GdkPoint           *start,
 303                                                               GdkPoint           *stop);
 304 static void       clear_selection                            (EvView             *view);
 305 static void       selection_free                             (EvViewSelection    *selection);
 306 static char*      get_selected_text                          (EvView             *ev_view);
 307 static void       ev_view_primary_get_cb                     (GtkClipboard       *clipboard,
 308                                                               GtkSelectionData   *selection_data,
 309                                                               guint               info,
 310                                                               gpointer            data);
 311 static void       ev_view_primary_clear_cb                   (GtkClipboard       *clipboard,
 312                                                               gpointer            data);
 313 static void       ev_view_update_primary_selection           (EvView             *ev_view);
 314
 315
 316 G_DEFINE_TYPE (EvView, ev_view, GTK_TYPE_WIDGET)
 317
 318 static void
 319 scroll_to_current_page (EvView *view, GtkOrientation orientation)
 320 {
 321         GdkPoint view_point;
 322
 323         if (view->document == NULL) {
 324                 return;
 325         }
 326
 327         doc_point_to_view_point (view, view->current_page, &view->pending_point, &view_point);
 328
 329         if (orientation == GTK_ORIENTATION_VERTICAL) {
 330                 view->pending_point.y = 0;
 331         } else {
 332                 view->pending_point.x = 0;
 333         }
 334
 335         if (orientation == GTK_ORIENTATION_VERTICAL) {
 336                 if (view->continuous) {
 337                         gtk_adjustment_clamp_page (view->vadjustment,
 338                                                    view_point.y - view->spacing / 2,
 339                                                    view_point.y + view->vadjustment->page_size);
 340                 } else {
 341                         gtk_adjustment_set_value (view->vadjustment,
 342                                                   CLAMP (view_point.y,
 343                                                   view->vadjustment->lower,
 344                                                   view->vadjustment->upper -
 345                                                   view->vadjustment->page_size));
 346                 }
 347         } else {
 348                 if (view->dual_page) {
 349                         gtk_adjustment_clamp_page (view->hadjustment,
 350                                                    view_point.x,
 351                                                    view_point.x + view->hadjustment->page_size);
 352                 } else {
 353                         gtk_adjustment_set_value (view->hadjustment,
 354                                                   CLAMP (view_point.x,
 355                                                   view->hadjustment->lower,
 356                                                   view->hadjustment->upper -
 357                                                   view->hadjustment->page_size));
 358                 }
 359         }
 360 }
 361
 362 static void
 363 view_set_adjustment_values (EvView         *view,
 364                             GtkOrientation  orientation)
 365 {
 366         GtkWidget *widget = GTK_WIDGET (view);
 367         GtkAdjustment *adjustment;
 368         int requisition;
 369         int allocation;
 370
 371         double factor;
 372         gint new_value;
 373
 374         if (orientation == GTK_ORIENTATION_HORIZONTAL)  {
 375                 requisition = widget->requisition.width;
 376                 allocation = widget->allocation.width;
 377                 adjustment = view->hadjustment;
 378         } else {
 379                 requisition = widget->requisition.height;
 380                 allocation = widget->allocation.height;
 381                 adjustment = view->vadjustment;
 382         }
 383
 384         if (!adjustment)
 385                 return;
 386
 387         factor = 1.0;
 388         switch (view->pending_scroll) {
 389                 case SCROLL_TO_KEEP_POSITION:
 390                 case SCROLL_TO_FIND_LOCATION:
 391                         factor = (adjustment->value) / adjustment->upper;
 392                         break;
 393                 case SCROLL_TO_PAGE_POSITION:
 394                         break;
 395                 case SCROLL_TO_CENTER:
 396                         factor = (adjustment->value + adjustment->page_size * 0.5) / adjustment->upper;
 397                         break;
 398         }
 399
 400         adjustment->page_size = allocation;
 401         adjustment->step_increment = allocation * 0.1;
 402         adjustment->page_increment = allocation * 0.9;
 403         adjustment->lower = 0;
 404         adjustment->upper = MAX (allocation, requisition);
 405
 406         /*
 407          * We add 0.5 to the values before to average out our rounding errors.
 408          */
 409         switch (view->pending_scroll) {
 410                 case SCROLL_TO_KEEP_POSITION:
 411                 case SCROLL_TO_FIND_LOCATION:
 412                         new_value = CLAMP (adjustment->upper * factor + 0.5, 0, adjustment->upper - adjustment->page_size);
 413                         gtk_adjustment_set_value (adjustment, (int)new_value);
 414                         break;
 415                 case SCROLL_TO_PAGE_POSITION:
 416                         scroll_to_current_page (view, orientation);
 417                         break;
 418                 case SCROLL_TO_CENTER:
 419                         new_value = CLAMP (adjustment->upper * factor - adjustment->page_size * 0.5 + 0.5,
 420                                            0, adjustment->upper - adjustment->page_size);
 421                         gtk_adjustment_set_value (adjustment, (int)new_value);
 422                         break;
 423         }
 424
 425         gtk_adjustment_changed (adjustment);
 426 }
 427
 428 static void
 429 view_update_range_and_current_page (EvView *view)
 430 {
 431         gint current_page;
 432         gint best_current_page = -1;
 433
 434         /* Presentation trumps all other modes */
 435         if (view->presentation) {
 436                 view->start_page = view->current_page;
 437                 view->end_page = view->current_page;
 438         } else if (view->continuous) {
 439                 GdkRectangle current_area, unused, page_area;
 440                 GtkBorder border;
 441                 gboolean found = FALSE;
 442                 gint area_max = -1, area;
 443                 int i;
 444
 445                 if (!(view->vadjustment && view->hadjustment))
 446                         return;
 447
 448                 current_area.x = view->hadjustment->value;
 449                 current_area.width = view->hadjustment->upper;
 450                 current_area.y = view->vadjustment->value;
 451                 current_area.height = view->vadjustment->page_size;
 452
 453                 for (i = 0; i < ev_page_cache_get_n_pages (view->page_cache); i++) {
 454
 455                         get_page_extents (view, i, &page_area, &border);
 456
 457                         if (gdk_rectangle_intersect (&current_area, &page_area, &unused)) {
 458                                 area = unused.width * unused.height;
 459
 460                                 if (!found) {
 461                                         area_max = area;
 462                                         view->start_page = i;
 463                                         found = TRUE;
 464                                         best_current_page = i;
 465                                 }
 466                                 if (area > area_max) {
 467                                         best_current_page = (area == area_max) ? MIN (i, best_current_page) : i;
 468                                         area_max = area;
 469                                 }
 470
 471                                 view->end_page = i;
 472                         } else if (found) {
 473                                 break;
 474                         }
 475                 }
 476
 477         } else if (view->dual_page) {
 478                 if (view->current_page % 2 == ev_page_cache_get_dual_even_left (view->page_cache)) {
 479                         view->start_page = view->current_page;
 480                         if (view->current_page + 1 < ev_page_cache_get_n_pages (view->page_cache))
 481                                 view->end_page = view->start_page + 1;
 482                         else
 483                                 view->end_page = view->start_page;
 484                 } else {
 485                         if (view->current_page < 1)
 486                                 view->start_page = view->current_page;
 487                         else
 488                                 view->start_page = view->current_page - 1;
 489                         view->end_page = view->current_page;
 490                 }
 491         } else {
 492                 view->start_page = view->current_page;
 493                 view->end_page = view->current_page;
 494         }
 495
 496         best_current_page = MAX (best_current_page, view->start_page);
 497         current_page = ev_page_cache_get_current_page (view->page_cache);
 498
 499         if ((current_page != best_current_page) && (view->pending_scroll == SCROLL_TO_KEEP_POSITION)) {
 500                 view->current_page = best_current_page;
 501                 ev_page_cache_set_current_page (view->page_cache, best_current_page);
 502         }
 503
 504         ev_pixbuf_cache_set_page_range (view->pixbuf_cache,
 505                                         view->start_page,
 506                                         view->end_page,
 507                                         view->rotation,
 508                                         view->scale,
 509                                         view->selection_info.selections);
 510 }
 511
 512 static void
 513 set_scroll_adjustment (EvView *view,
 514                        GtkOrientation  orientation,
 515                        GtkAdjustment  *adjustment)
 516 {
 517         GtkAdjustment **to_set;
 518
 519         if (orientation == GTK_ORIENTATION_HORIZONTAL)
 520                 to_set = &view->hadjustment;
 521         else
 522                 to_set = &view->vadjustment;
 523
 524         if (*to_set != adjustment) {
 525                 if (*to_set) {
 526                         g_signal_handlers_disconnect_by_func (*to_set,
 527                                                               (gpointer) on_adjustment_value_changed,
 528                                                               view);
 529                         g_object_unref (*to_set);
 530                 }
 531
 532                 *to_set = adjustment;
 533                 view_set_adjustment_values (view, orientation);
 534
 535                 if (*to_set) {
 536                         g_object_ref (*to_set);
 537                         g_signal_connect (*to_set, "value_changed",
 538                                           G_CALLBACK (on_adjustment_value_changed), view);
 539                 }
 540         }
 541 }
 542
 543 static void
 544 ev_view_set_scroll_adjustments (EvView *view,
 545                                 GtkAdjustment  *hadjustment,
 546                                 GtkAdjustment  *vadjustment)
 547 {
 548         set_scroll_adjustment (view, GTK_ORIENTATION_HORIZONTAL, hadjustment);
 549         set_scroll_adjustment (view, GTK_ORIENTATION_VERTICAL, vadjustment);
 550
 551         on_adjustment_value_changed (NULL, view);
 552 }
 553
 554 static void
 555 add_scroll_binding_keypad (GtkBindingSet  *binding_set,
 556                            guint           keyval,
 557                            GdkModifierType modifiers,
 558                            EvScrollType    scroll,
 559                            gboolean        horizontal)
 560 {
 561   guint keypad_keyval = keyval - GDK_Left + GDK_KP_Left;
 562
 563   gtk_binding_entry_add_signal (binding_set, keyval, modifiers,
 564                                 "binding_activated", 2,
 565                                 EV_TYPE_SCROLL_TYPE, scroll,
 566                                 G_TYPE_BOOLEAN, horizontal);
 567   gtk_binding_entry_add_signal (binding_set, keypad_keyval, modifiers,
 568                                 "binding_activated", 2,
 569                                 EV_TYPE_SCROLL_TYPE, scroll,
 570                                 G_TYPE_BOOLEAN, horizontal);
 571 }
 572
 573 void
 574 ev_view_scroll (EvView        *view,
 575                 EvScrollType   scroll,
 576                 gboolean horizontal)
 577 {
 578         GtkAdjustment *adjustment;
 579         double value, increment;
 580         gboolean first_page = FALSE;
 581         gboolean last_page = FALSE;
 582
 583         view->jump_to_find_result = FALSE;
 584
 585         if (view->presentation || view->sizing_mode == EV_SIZING_BEST_FIT) {
 586                 switch (scroll) {
 587                         case EV_SCROLL_PAGE_BACKWARD:
 588                         case EV_SCROLL_STEP_BACKWARD:
 589                                 ev_view_previous_page (view);
 590                                 break;
 591                         case EV_SCROLL_PAGE_FORWARD:
 592                         case EV_SCROLL_STEP_FORWARD:
 593                                 ev_view_next_page (view);
 594                                 break;
 595                         default:
 596                                 break;
 597                 }
 598                 return;
 599         }
 600
 601         /* Assign values for increment and vertical adjustment */
 602         adjustment = horizontal ? view->hadjustment : view->vadjustment;
 603         increment = adjustment->page_size * 0.75;
 604         value = adjustment->value;
 605
 606         /* Assign boolean for first and last page */
 607         if (view->current_page == 0)
 608                 first_page = TRUE;
 609         if (view->current_page == ev_page_cache_get_n_pages (view->page_cache) - 1)
 610                 last_page = TRUE;
 611
 612         switch (scroll) {
 613                 case EV_SCROLL_PAGE_BACKWARD:
 614                         /* Do not jump backwards if at the first page */
 615                         if (value == (adjustment->lower) && first_page) {
 616                                 /* Do nothing */
 617                                 /* At the top of a page, assign the upper bound limit of previous page */
 618                         } else if (value == (adjustment->lower)) {
 619                                 value = adjustment->upper - adjustment->page_size;
 620                                 ev_view_previous_page (view);
 621                                 /* Jump to the top */
 622                         } else {
 623                                 value = MAX (value - increment, adjustment->lower);
 624                         }
 625                         break;
 626                 case EV_SCROLL_PAGE_FORWARD:
 627                         /* Do not jump forward if at the last page */
 628                         if (value == (adjustment->upper - adjustment->page_size) && last_page) {
 629                                 /* Do nothing */
 630                         /* At the bottom of a page, assign the lower bound limit of next page */
 631                         } else if (value == (adjustment->upper - adjustment->page_size)) {
 632                                 value = 0;
 633                                 ev_view_next_page (view);
 634                         /* Jump to the bottom */
 635                         } else {
 636                                 value = MIN (value + increment, adjustment->upper - adjustment->page_size);
 637                         }
 638                         break;
 639                 case EV_SCROLL_STEP_BACKWARD:
 640                         value -= adjustment->step_increment;
 641                         break;
 642                 case EV_SCROLL_STEP_FORWARD:
 643                         value += adjustment->step_increment;
 644                         break;
 645                 case EV_SCROLL_STEP_DOWN:
 646                         value -= adjustment->step_increment / 10;
 647                         break;
 648                 case EV_SCROLL_STEP_UP:
 649                         value += adjustment->step_increment / 10;
 650                         break;
 651                 default:
 652                         break;
 653         }
 654
 655         value = CLAMP (value, adjustment->lower,
 656                        adjustment->upper - adjustment->page_size);
 657
 658         gtk_adjustment_set_value (adjustment, value);
 659 }
 660
 661 #define MARGIN 5
 662
 663 static void
 664 ensure_rectangle_is_visible (EvView *view, GdkRectangle *rect)
 665 {
 666         GtkWidget *widget = GTK_WIDGET (view);
 667         GtkAdjustment *adjustment;
 668         int value;
 669
 670         view->pending_scroll = SCROLL_TO_FIND_LOCATION;
 671
 672         adjustment = view->vadjustment;
 673
 674         if (rect->y < adjustment->value) {
 675                 value = MAX (adjustment->lower, rect->y - MARGIN);
 676                 gtk_adjustment_set_value (view->vadjustment, value);
 677         } else if (rect->y + rect->height >
 678                    adjustment->value + widget->allocation.height) {
 679                 value = MIN (adjustment->upper, rect->y + rect->height -
 680                              widget->allocation.height + MARGIN);
 681                 gtk_adjustment_set_value (view->vadjustment, value);
 682         }
 683
 684         adjustment = view->hadjustment;
 685
 686         if (rect->x < adjustment->value) {
 687                 value = MAX (adjustment->lower, rect->x - MARGIN);
 688                 gtk_adjustment_set_value (view->hadjustment, value);
 689         } else if (rect->x + rect->height >
 690                    adjustment->value + widget->allocation.width) {
 691                 value = MIN (adjustment->upper, rect->x + rect->width -
 692                              widget->allocation.width + MARGIN);
 693                 gtk_adjustment_set_value (view->hadjustment, value);
 694         }
 695
 696         gtk_widget_queue_resize (GTK_WIDGET (view));
 697 }
 698
 699 /*** Geometry computations ***/
 700
 701 static void
 702 compute_border (EvView *view, int width, int height, GtkBorder *border)
 703 {
 704         if (view->presentation) {
 705                 border->left = 0;
 706                 border->right = 0;
 707                 border->top = 0;
 708                 border->bottom = 0;
 709         } else {
 710                 ev_document_misc_get_page_border_size (width, height, border);
 711         }
 712 }
 713
 714 static void
 715 get_page_y_offset (EvView *view, int page, double zoom, int *y_offset)
 716 {
 717         int max_width, offset;
 718         GtkBorder border;
 719
 720         g_return_if_fail (y_offset != NULL);
 721
 722         ev_page_cache_get_max_width (view->page_cache, view->rotation, zoom, &max_width);
 723
 724         compute_border (view, max_width, max_width, &border);
 725
 726         if (view->dual_page) {
 727                 ev_page_cache_get_height_to_page (view->page_cache, page,
 728                                                   view->rotation, zoom, NULL, &offset);
 729                 offset += ((page + ev_page_cache_get_dual_even_left (view->page_cache)) / 2 + 1) * view->spacing + ((page + ev_page_cache_get_dual_even_left (view->page_cache)) / 2 ) * (border.top + border.bottom);
 730         } else {
 731                 ev_page_cache_get_height_to_page (view->page_cache, page,
 732                                                   view->rotation, zoom, &offset, NULL);
 733                 offset += (page + 1) * view->spacing + page * (border.top + border.bottom);
 734         }
 735
 736         *y_offset = offset;
 737         return;
 738 }
 739
 740 static gboolean
 741 get_page_extents (EvView       *view,
 742                   gint          page,
 743                   GdkRectangle *page_area,
 744                   GtkBorder    *border)
 745 {
 746         GtkWidget *widget;
 747         int width, height;
 748
 749         widget = GTK_WIDGET (view);
 750
 751         /* Get the size of the page */
 752         ev_page_cache_get_size (view->page_cache, page,
 753                                 view->rotation,
 754                                 view->scale,
 755                                 &width, &height);
 756         compute_border (view, width, height, border);
 757         page_area->width = width + border->left + border->right;
 758         page_area->height = height + border->top + border->bottom;
 759
 760         if (view->presentation) {
 761                 page_area->x = (MAX (0, widget->allocation.width - width))/2;
 762                 page_area->y = (MAX (0, widget->allocation.height - height))/2;
 763         } else if (view->continuous) {
 764                 gint max_width;
 765                 gint x, y;
 766
 767                 ev_page_cache_get_max_width (view->page_cache, view->rotation,
 768                                              view->scale, &max_width);
 769                 max_width = max_width + border->left + border->right;
 770                 /* Get the location of the bounding box */
 771                 if (view->dual_page) {
 772                         x = view->spacing + ((page % 2 == ev_page_cache_get_dual_even_left (view->page_cache)) ? 0 : 1) * (max_width + view->spacing);
 773                         x = x + MAX (0, widget->allocation.width - (max_width * 2 + view->spacing * 3)) / 2;
 774                         if (page % 2 == ev_page_cache_get_dual_even_left (view->page_cache))
 775                                 x = x + (max_width - width - border->left - border->right);
 776                 } else {
 777                         x = view->spacing;
 778                         x = x + MAX (0, widget->allocation.width - (width + view->spacing * 2)) / 2;
 779                 }
 780
 781                 get_page_y_offset (view, page, view->scale, &y);
 782
 783                 page_area->x = x;
 784                 page_area->y = y;
 785         } else {
 786                 gint x, y;
 787                 if (view->dual_page) {
 788                         gint width_2, height_2;
 789                         gint max_width = width;
 790                         gint max_height = height;
 791                         GtkBorder overall_border;
 792                         gint other_page;
 793
 794                         other_page = (page % 2 == ev_page_cache_get_dual_even_left (view->page_cache)) ? page + 1: page - 1;
 795
 796                         /* First, we get the bounding box of the two pages */
 797                         if (other_page < ev_page_cache_get_n_pages (view->page_cache)
 798                             && (0 <= other_page)) {
 799                                 ev_page_cache_get_size (view->page_cache,
 800                                                         other_page,
 801                                                         view->rotation,
 802                                                         view->scale,
 803                                                         &width_2, &height_2);
 804                                 if (width_2 > width)
 805                                         max_width = width_2;
 806                                 if (height_2 > height)
 807                                         max_height = height_2;
 808                         }
 809                         compute_border (view, max_width, max_height, &overall_border);
 810
 811                         /* Find the offsets */
 812                         x = view->spacing;
 813                         y = view->spacing;
 814
 815                         /* Adjust for being the left or right page */
 816                         if (page % 2 == ev_page_cache_get_dual_even_left (view->page_cache))
 817                                 x = x + max_width - width;
 818                         else
 819                                 x = x + (max_width + overall_border.left + overall_border.right) + view->spacing;
 820
 821                         y = y + (max_height - height)/2;
 822
 823                         /* Adjust for extra allocation */
 824                         x = x + MAX (0, widget->allocation.width -
 825                                      ((max_width + overall_border.left + overall_border.right) * 2 + view->spacing * 3))/2;
 826                         y = y + MAX (0, widget->allocation.height - (height + view->spacing * 2))/2;
 827                 } else {
 828                         x = view->spacing;
 829                         y = view->spacing;
 830
 831                         /* Adjust for extra allocation */
 832                         x = x + MAX (0, widget->allocation.width - (width + border->left + border->right + view->spacing * 2))/2;
 833                         y = y + MAX (0, widget->allocation.height - (height + border->top + border->bottom +  view->spacing * 2))/2;
 834                 }
 835
 836                 page_area->x = x;
 837                 page_area->y = y;
 838         }
 839
 840         return TRUE;
 841 }
 842
 843 static void
 844 view_point_to_doc_point (EvView *view,
 845                          GdkPoint *view_point,
 846                          GdkRectangle *page_area,
 847                          double  *doc_point_x,
 848                          double  *doc_point_y)
 849 {
 850         *doc_point_x = (double) (view_point->x - page_area->x) / view->scale;
 851         *doc_point_y = (double) (view_point->y - page_area->y) / view->scale;
 852 }
 853
 854 static void
 855 view_rect_to_doc_rect (EvView *view,
 856                        GdkRectangle *view_rect,
 857                        GdkRectangle *page_area,
 858                        EvRectangle  *doc_rect)
 859 {
 860         doc_rect->x1 = (double) (view_rect->x - page_area->x) / view->scale;
 861         doc_rect->y1 = (double) (view_rect->y - page_area->y) / view->scale;
 862         doc_rect->x2 = doc_rect->x1 + (double) view_rect->width / view->scale;
 863         doc_rect->y2 = doc_rect->y1 + (double) view_rect->height / view->scale;
 864 }
 865
 866 static gboolean
 867 doc_point_to_view_point (EvView       *view,
 868                          int           page,
 869                          EvPoint      *doc_point,
 870                          GdkPoint     *view_point)
 871 {
 872         GdkRectangle page_area;
 873         GtkBorder border;
 874         double x, y, view_x, view_y;
 875         int width, height;
 876
 877         ev_page_cache_get_size (view->page_cache, page,
 878                                 view->rotation,
 879                                 1.0,
 880                                 &width, &height);
 881
 882         if (view->rotation == 0) {
 883                 x = doc_point->x;
 884                 y = doc_point->y;
 885         } else if (view->rotation == 90) {
 886                 x = width - doc_point->y;
 887                 y = doc_point->x;
 888         } else if (view->rotation == 180) {
 889                 x = width - doc_point->x;
 890                 y = height - doc_point->y;
 891         } else if (view->rotation == 270) {
 892                 x = doc_point->y;
 893                 y = height - doc_point->x;
 894         } else {
 895                 g_assert_not_reached ();
 896         }
 897
 898         get_page_extents (view, page, &page_area, &border);
 899
 900         view_x = x * view->scale;
 901         view_y = y * view->scale;
 902         view_point->x = view_x + page_area.x;
 903         view_point->y = view_y + page_area.y;
 904
 905         return (view_x > 0 && view_x <= page_area.width &&
 906                 view_y > 0 && view_y <= page_area.height);
 907 }
 908
 909 static void
 910 doc_rect_to_view_rect (EvView       *view,
 911                        int           page,
 912                        EvRectangle  *doc_rect,
 913                        GdkRectangle *view_rect)
 914 {
 915         GdkRectangle page_area;
 916         GtkBorder border;
 917         double x, y, w, h;
 918         int width, height;
 919
 920         ev_page_cache_get_size (view->page_cache, page,
 921                                 view->rotation,
 922                                 1.0,
 923                                 &width, &height);
 924
 925         if (view->rotation == 0) {
 926                 x = doc_rect->x1;
 927                 y = doc_rect->y1;
 928                 w = doc_rect->x2 - doc_rect->x1;
 929                 h = doc_rect->y2 - doc_rect->y1;
 930         } else if (view->rotation == 90) {
 931                 x = width - doc_rect->y2;
 932                 y = doc_rect->x1;
 933                 w = doc_rect->y2 - doc_rect->y1;
 934                 h = doc_rect->x2 - doc_rect->x1;
 935         } else if (view->rotation == 180) {
 936                 x = width - doc_rect->x2;
 937                 y = height - doc_rect->y2;
 938                 w = doc_rect->x2 - doc_rect->x1;
 939                 h = doc_rect->y2 - doc_rect->y1;
 940         } else if (view->rotation == 270) {
 941                 x = doc_rect->y1;
 942                 y = height - doc_rect->x2;
 943                 w = doc_rect->y2 - doc_rect->y1;
 944                 h = doc_rect->x2 - doc_rect->x1;
 945         } else {
 946                 g_assert_not_reached ();
 947         }
 948
 949         get_page_extents (view, page, &page_area, &border);
 950
 951         view_rect->x = x * view->scale + page_area.x;
 952         view_rect->y = y * view->scale + page_area.y;
 953         view_rect->width = w * view->scale;
 954         view_rect->height = h * view->scale;
 955 }
 956
 957 static void
 958 find_page_at_location (EvView  *view,
 959                        gdouble  x,
 960                        gdouble  y,
 961                        gint    *page,
 962                        gint    *x_offset,
 963                        gint    *y_offset)
 964 {
 965         int i;
 966
 967         if (view->document == NULL)
 968                 return;
 969
 970         g_assert (page);
 971         g_assert (x_offset);
 972         g_assert (y_offset);
 973
 974         for (i = view->start_page; i <= view->end_page; i++) {
 975                 GdkRectangle page_area;
 976                 GtkBorder border;
 977
 978                 if (! get_page_extents (view, i, &page_area, &border))
 979                         continue;
 980
 981                 if ((x >= page_area.x + border.left) &&
 982                     (x < page_area.x + page_area.width - border.right) &&
 983                     (y >= page_area.y + border.top) &&
 984                     (y < page_area.y + page_area.height - border.bottom)) {
 985                         *page = i;
 986                         *x_offset = x - (page_area.x + border.left);
 987                         *y_offset = y - (page_area.y + border.top);
 988                         return;
 989                 }
 990         }
 991
 992         *page = -1;
 993 }
 994
 995 static gboolean
 996 location_in_text (EvView  *view,
 997                   gdouble  x,
 998                   gdouble  y)
 999 {
1000         GdkRegion *region;
1001         gint page = -1;
1002         gint x_offset = 0, y_offset = 0;
1003
1004         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1005
1006         if (page == -1)
1007                 return FALSE;
1008
1009         region = ev_pixbuf_cache_get_text_mapping (view->pixbuf_cache, page);
1010
1011         if (region)
1012                 return gdk_region_point_in (region, x_offset / view->scale, y_offset / view->scale);
1013         else
1014                 return FALSE;
1015 }
1016
1017 static int
1018 ev_view_get_width (EvView *view)
1019 {
1020         return GTK_WIDGET (view)->allocation.width;
1021 }
1022
1023 static int
1024 ev_view_get_height (EvView *view)
1025 {
1026         return GTK_WIDGET (view)->allocation.height;
1027 }
1028
1029 static gboolean
1030 location_in_selected_text (EvView  *view,
1031                            gdouble  x,
1032                            gdouble  y)
1033 {
1034         gint page = -1;
1035         gint x_offset = 0, y_offset = 0;
1036         EvViewSelection *selection;
1037         GList *l = NULL;
1038
1039         for (l = view->selection_info.selections; l != NULL; l = l->next) {
1040                 selection = (EvViewSelection *)l->data;
1041
1042                 find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1043
1044                 if (page != selection->page)
1045                         continue;
1046
1047                 if (selection->covered_region &&
1048                     gdk_region_point_in (selection->covered_region, x_offset, y_offset))
1049                         return TRUE;
1050         }
1051
1052         return FALSE;
1053 }
1054
1055 static gboolean
1056 get_doc_point_from_offset (EvView *view,
1057                            gint    page,
1058                            gint    x_offset,
1059                            gint    y_offset,
1060                            gint   *x_new,
1061                            gint   *y_new)
1062 {
1063         int width, height;
1064         double x, y;
1065
1066         ev_page_cache_get_size (view->page_cache, page,
1067                                 view->rotation,
1068                                 1.0,
1069                                 &width, &height);
1070
1071         x_offset = x_offset / view->scale;
1072         y_offset = y_offset / view->scale;
1073
1074         if (view->rotation == 0) {
1075                 x = x_offset;
1076                 y = y_offset;
1077         } else if (view->rotation == 90) {
1078                 x = y_offset;
1079                 y = width - x_offset;
1080         } else if (view->rotation == 180) {
1081                 x = width - x_offset;
1082                 y = height - y_offset;
1083         } else if (view->rotation == 270) {
1084                 x = height - y_offset;
1085                 y = x_offset;
1086         } else {
1087                 g_assert_not_reached ();
1088         }
1089
1090         *x_new = x;
1091         *y_new = y;
1092
1093         return TRUE;
1094 }
1095
1096 /*** Hyperref ***/
1097 static EvLink *
1098 ev_view_get_link_at_location (EvView  *view,
1099                               gdouble  x,
1100                               gdouble  y)
1101 {
1102         gint page = -1;
1103         gint x_offset = 0, y_offset = 0;
1104         gint x_new = 0, y_new = 0;
1105         GList *link_mapping;
1106
1107         x += view->scroll_x;
1108         y += view->scroll_y;
1109
1110         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1111
1112         if (page == -1)
1113                 return NULL;
1114
1115
1116         if (get_doc_point_from_offset (view, page, x_offset,
1117                                        y_offset, &x_new, &y_new) == FALSE)
1118                 return NULL;
1119
1120         link_mapping = ev_pixbuf_cache_get_link_mapping (view->pixbuf_cache, page);
1121
1122         if (link_mapping)
1123                 return ev_link_mapping_find (link_mapping, x_new, y_new);
1124         else
1125                 return NULL;
1126 }
1127
1128 static void
1129 goto_fitr_dest (EvView *view, EvLinkDest *dest)
1130 {
1131         EvPoint doc_point;
1132         double zoom;
1133
1134         zoom = zoom_for_size_best_fit (ev_link_dest_get_right (dest) - ev_link_dest_get_left (dest),
1135                                        ev_link_dest_get_bottom (dest) - ev_link_dest_get_top (dest),
1136                                        ev_view_get_width (view),
1137                                        ev_view_get_height (view), 0, 0);
1138
1139         ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1140         ev_view_set_zoom (view, zoom, FALSE);
1141
1142         doc_point.x = ev_link_dest_get_left (dest);
1143         doc_point.y = ev_link_dest_get_top (dest);
1144
1145         view->current_page = ev_link_dest_get_page (dest);
1146         view->pending_point = doc_point;
1147         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1148
1149         gtk_widget_queue_resize (GTK_WIDGET (view));
1150 }
1151
1152 static void
1153 goto_fitv_dest (EvView *view, EvLinkDest *dest)
1154 {
1155         EvPoint doc_point;
1156         int doc_width, doc_height, page;
1157         double zoom;
1158
1159         page = ev_link_dest_get_page (dest);
1160         ev_page_cache_get_size (view->page_cache, page, 0, 1.0, &doc_width, &doc_height);
1161
1162         doc_point.x = ev_link_dest_get_left (dest);
1163         doc_point.y = 0;
1164
1165         zoom = zoom_for_size_fit_height (doc_width - doc_point.x , doc_height,
1166                                          ev_view_get_width (view),
1167                                          ev_view_get_height (view), 0);
1168
1169         ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1170         ev_view_set_zoom (view, zoom, FALSE);
1171
1172         view->current_page = page;
1173         view->pending_point = doc_point;
1174         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1175
1176         gtk_widget_queue_resize (GTK_WIDGET (view));
1177 }
1178
1179 static void
1180 goto_fith_dest (EvView *view, EvLinkDest *dest)
1181 {
1182         EvPoint doc_point;
1183         int doc_width, doc_height, page;
1184         double zoom;
1185
1186         page = ev_link_dest_get_page (dest);
1187         ev_page_cache_get_size (view->page_cache, page, 0, 1.0, &doc_width, &doc_height);
1188
1189         doc_point.x = 0;
1190         doc_point.y = ev_link_dest_get_top (dest);
1191
1192         zoom = zoom_for_size_fit_width (doc_width, ev_link_dest_get_top (dest),
1193                                         ev_view_get_width (view),
1194                                         ev_view_get_height (view), 0);
1195
1196         ev_view_set_sizing_mode (view, EV_SIZING_FIT_WIDTH);
1197         ev_view_set_zoom (view, zoom, FALSE);
1198
1199         view->current_page = page;
1200         view->pending_point = doc_point;
1201         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1202
1203         gtk_widget_queue_resize (GTK_WIDGET (view));
1204 }
1205
1206 static void
1207 goto_fit_dest (EvView *view, EvLinkDest *dest)
1208 {
1209         double zoom;
1210         int doc_width, doc_height;
1211         int page;
1212
1213         page = ev_link_dest_get_page (dest);
1214         ev_page_cache_get_size (view->page_cache, page, 0, 1.0, &doc_width, &doc_height);
1215
1216         zoom = zoom_for_size_best_fit (doc_width, doc_height, ev_view_get_width (view),
1217                                        ev_view_get_height (view), 0, 0);
1218
1219         ev_view_set_sizing_mode (view, EV_SIZING_BEST_FIT);
1220         ev_view_set_zoom (view, zoom, FALSE);
1221
1222         view->current_page = page;
1223         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1224
1225         gtk_widget_queue_resize (GTK_WIDGET (view));
1226 }
1227
1228 static void
1229 goto_xyz_dest (EvView *view, EvLinkDest *dest)
1230 {
1231         EvPoint doc_point;
1232         gint page;
1233         double zoom;
1234
1235         zoom = ev_link_dest_get_zoom (dest);
1236         page = ev_link_dest_get_page (dest);
1237
1238         if (zoom > 1) {
1239                 ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1240                 ev_view_set_zoom (view, zoom, FALSE);
1241         }
1242
1243         doc_point.x = ev_link_dest_get_left (dest);
1244         doc_point.y = ev_link_dest_get_top (dest);
1245
1246         view->current_page = page;
1247         view->pending_point = doc_point;
1248         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1249
1250         gtk_widget_queue_resize (GTK_WIDGET (view));
1251 }
1252
1253 static void
1254 goto_dest (EvView *view, EvLinkDest *dest)
1255 {
1256         EvLinkDestType type;
1257         int page, n_pages, current_page;
1258
1259         page = ev_link_dest_get_page (dest);
1260         n_pages = ev_page_cache_get_n_pages (view->page_cache);
1261
1262         if (page < 0 || page >= n_pages)
1263                 return;
1264
1265         current_page = view->current_page;
1266
1267         type = ev_link_dest_get_dest_type (dest);
1268
1269         switch (type) {
1270                 case EV_LINK_DEST_TYPE_PAGE:
1271                         ev_page_cache_set_current_page (view->page_cache, page);
1272                         break;
1273                 case EV_LINK_DEST_TYPE_FIT:
1274                         goto_fit_dest (view, dest);
1275                         break;
1276                 case EV_LINK_DEST_TYPE_FITH:
1277                         goto_fith_dest (view, dest);
1278                         break;
1279                 case EV_LINK_DEST_TYPE_FITV:
1280                         goto_fitv_dest (view, dest);
1281                         break;
1282                 case EV_LINK_DEST_TYPE_FITR:
1283                         goto_fitr_dest (view, dest);
1284                         break;
1285                 case EV_LINK_DEST_TYPE_XYZ:
1286                         goto_xyz_dest (view, dest);
1287                         break;
1288                 case EV_LINK_DEST_TYPE_PAGE_LABEL:
1289                         ev_page_cache_set_page_label (view->page_cache, ev_link_dest_get_page_label (dest));
1290                         break;
1291                 default:
1292                         g_assert_not_reached ();
1293         }
1294
1295         if (current_page != view->current_page)
1296                 ev_page_cache_set_current_page (view->page_cache,
1297                                                 view->current_page);
1298 }
1299
1300 void
1301 ev_view_goto_dest (EvView *view, EvLinkDest *dest)
1302 {
1303         EvLinkDestType type;
1304
1305         type = ev_link_dest_get_dest_type (dest);
1306
1307         if (type == EV_LINK_DEST_TYPE_NAMED) {
1308                 EvLinkDest  *dest2;
1309                 const gchar *named_dest;
1310
1311                 named_dest = ev_link_dest_get_named_dest (dest);
1312                 dest2 = ev_document_links_find_link_dest (EV_DOCUMENT_LINKS (view->document),
1313                                                           named_dest);
1314                 if (dest2) {
1315                         goto_dest (view, dest2);
1316                         g_object_unref (dest2);
1317                 }
1318
1319                 return;
1320         }
1321
1322         goto_dest (view, dest);
1323 }
1324
1325 void
1326 ev_view_handle_link (EvView *view, EvLink *link)
1327 {
1328         EvLinkAction    *action = NULL;
1329         EvLinkActionType type;
1330
1331         action = ev_link_get_action (link);
1332         if (!action)
1333                 return;
1334
1335         type = ev_link_action_get_action_type (action);
1336
1337         switch (type) {
1338                 case EV_LINK_ACTION_TYPE_GOTO_DEST: {
1339                         EvLinkDest *dest;
1340
1341                         dest = ev_link_action_get_dest (action);
1342                         ev_view_goto_dest (view, dest);
1343                 }
1344                         break;
1345                 case EV_LINK_ACTION_TYPE_GOTO_REMOTE:
1346                 case EV_LINK_ACTION_TYPE_EXTERNAL_URI:
1347                 case EV_LINK_ACTION_TYPE_LAUNCH:
1348                 case EV_LINK_ACTION_TYPE_NAMED:
1349                         g_signal_emit (view, signals[SIGNAL_EXTERNAL_LINK], 0, action);
1350                         break;
1351         }
1352 }
1353
1354 static gchar *
1355 page_label_from_dest (EvView *view, EvLinkDest *dest)
1356 {
1357         EvLinkDestType type;
1358         gchar *msg = NULL;
1359
1360         type = ev_link_dest_get_dest_type (dest);
1361
1362         switch (type) {
1363                 case EV_LINK_DEST_TYPE_NAMED: {
1364                         EvLinkDest  *dest2;
1365                         const gchar *named_dest;
1366
1367                         named_dest = ev_link_dest_get_named_dest (dest);
1368                         dest2 = ev_document_links_find_link_dest (EV_DOCUMENT_LINKS (view->document),
1369                                                                   named_dest);
1370                         if (dest2) {
1371                                 msg = ev_page_cache_get_page_label (view->page_cache,
1372                                                                     ev_link_dest_get_page (dest2));
1373                                 g_object_unref (dest2);
1374                         }
1375                 }
1376
1377                         break;
1378                 default:
1379                         msg = ev_page_cache_get_page_label (view->page_cache,
1380                                                             ev_link_dest_get_page (dest));
1381         }
1382
1383         return msg;
1384 }
1385
1386 static char *
1387 tip_from_action_named (EvLinkAction *action)
1388 {
1389         const gchar *name = ev_link_action_get_name (action);
1390
1391         if (g_ascii_strcasecmp (name, "FirstPage") == 0) {
1392                 return g_strdup (_("Go to first page"));
1393         } else if (g_ascii_strcasecmp (name, "PrevPage") == 0) {
1394                 return g_strdup (_("Go to previous page"));
1395         } else if (g_ascii_strcasecmp (name, "NextPage") == 0) {
1396                 return g_strdup (_("Go to next page"));
1397         } else if (g_ascii_strcasecmp (name, "LastPage") == 0) {
1398                 return g_strdup (_("Go to last page"));
1399         } else if (g_ascii_strcasecmp (name, "GoToPage") == 0) {
1400                 return g_strdup (_("Go to page"));
1401         } else if (g_ascii_strcasecmp (name, "Find") == 0) {
1402                 return g_strdup (_("Find"));
1403         }
1404
1405         return NULL;
1406 }
1407
1408 static char *
1409 tip_from_link (EvView *view, EvLink *link)
1410 {
1411         EvLinkAction *action;
1412         EvLinkActionType type;
1413         char *msg = NULL;
1414         char *page_label;
1415         const char *title;
1416
1417         action = ev_link_get_action (link);
1418         title = ev_link_get_title (link);
1419
1420         if (!action)
1421                 return title ? g_strdup (title) : NULL;
1422
1423         type = ev_link_action_get_action_type (action);
1424
1425         switch (type) {
1426                 case EV_LINK_ACTION_TYPE_GOTO_DEST:
1427                         page_label = page_label_from_dest (view,
1428                                                            ev_link_action_get_dest (action));
1429                         msg = g_strdup_printf (_("Go to page %s"), page_label);
1430                         g_free (page_label);
1431                         break;
1432                 case EV_LINK_ACTION_TYPE_GOTO_REMOTE:
1433                         if (title) {
1434                                 msg = g_strdup_printf (_("Go to %s on file “%s”"), title,
1435                                                        ev_link_action_get_filename (action));
1436                         } else {
1437                                 msg = g_strdup_printf (_("Go to file “%s”"),
1438                                                        ev_link_action_get_filename (action));
1439                         }
1440
1441                         break;
1442                 case EV_LINK_ACTION_TYPE_EXTERNAL_URI:
1443                         msg = g_strdup (ev_link_action_get_uri (action));
1444                         break;
1445                 case EV_LINK_ACTION_TYPE_LAUNCH:
1446                         msg = g_strdup_printf (_("Launch %s"),
1447                                                ev_link_action_get_filename (action));
1448                         break;
1449                 case EV_LINK_ACTION_TYPE_NAMED:
1450                         msg = tip_from_action_named (action);
1451                         break;
1452                 default:
1453                         if (title)
1454                                 msg = g_strdup (title);
1455                         break;
1456         }
1457
1458         return msg;
1459 }
1460
1461 static void
1462 handle_link_over_xy (EvView *view, gint x, gint y)
1463 {
1464         EvLink *link;
1465
1466         link = ev_view_get_link_at_location (view, x, y);
1467
1468         if (view->link_tooltip == NULL) {
1469                 view->link_tooltip = ev_tooltip_new (GTK_WIDGET (view));
1470         }
1471
1472         if (view->hovered_link != link) {
1473                 view->hovered_link = link;
1474                 ev_tooltip_deactivate (EV_TOOLTIP (view->link_tooltip));
1475         }
1476
1477         if (link) {
1478                 char *msg = tip_from_link (view, link);
1479
1480                 if (msg && g_utf8_validate (msg, -1, NULL)) {
1481                         EvTooltip *tooltip = EV_TOOLTIP (view->link_tooltip);
1482
1483                         ev_tooltip_set_position (tooltip, x, y);
1484                         ev_tooltip_set_text (tooltip, msg);
1485                         ev_tooltip_activate (tooltip);
1486                 }
1487                 g_free (msg);
1488
1489                 ev_view_set_cursor (view, EV_VIEW_CURSOR_LINK);
1490         } else if (location_in_text (view, x + view->scroll_x, y + view->scroll_y)) {
1491                 ev_view_set_cursor (view, EV_VIEW_CURSOR_IBEAM);
1492         } else {
1493                 ev_view_set_status (view, NULL);
1494                 if (view->cursor == EV_VIEW_CURSOR_LINK ||
1495                     view->cursor == EV_VIEW_CURSOR_IBEAM)
1496                         ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
1497         }
1498         return;
1499 }
1500
1501 /*** GtkWidget implementation ***/
1502
1503 static void
1504 ev_view_size_request_continuous_dual_page (EvView         *view,
1505                                            GtkRequisition *requisition)
1506 {
1507         int max_width;
1508         gint n_pages;
1509         GtkBorder border;
1510
1511         ev_page_cache_get_max_width (view->page_cache, view->rotation,
1512                                      view->scale, &max_width);
1513         compute_border (view, max_width, max_width, &border);
1514
1515         n_pages = ev_page_cache_get_n_pages (view->page_cache) + 1;
1516
1517         requisition->width = (max_width + border.left + border.right) * 2 + (view->spacing * 3);
1518         get_page_y_offset (view, n_pages, view->scale, &requisition->height);
1519
1520         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
1521                 requisition->width = 1;
1522         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
1523                 requisition->width = 1;
1524                 /* FIXME: This could actually be set on one page docs or docs
1525                  * with a strange aspect ratio. */
1526                 /* requisition->height = 1;*/
1527         }
1528 }
1529
1530 static void
1531 ev_view_size_request_continuous (EvView         *view,
1532                                  GtkRequisition *requisition)
1533 {
1534         int max_width;
1535         int n_pages;
1536         GtkBorder border;
1537
1538
1539         ev_page_cache_get_max_width (view->page_cache, view->rotation,
1540                                      view->scale, &max_width);
1541         n_pages = ev_page_cache_get_n_pages (view->page_cache);
1542         compute_border (view, max_width, max_width, &border);
1543
1544         requisition->width = max_width + (view->spacing * 2) + border.left + border.right;
1545         get_page_y_offset (view, n_pages, view->scale, &requisition->height);
1546
1547         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
1548                 requisition->width = 1;
1549         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
1550                 requisition->width = 1;
1551                 /* FIXME: This could actually be set on one page docs or docs
1552                  * with a strange aspect ratio. */
1553                 /* requisition->height = 1;*/
1554         }
1555 }
1556
1557 static void
1558 ev_view_size_request_dual_page (EvView         *view,
1559                                 GtkRequisition *requisition)
1560 {
1561         GtkBorder border;
1562         gint width, height;
1563
1564         /* Find the largest of the two. */
1565         ev_page_cache_get_size (view->page_cache,
1566                                 view->current_page,
1567                                 view->rotation,
1568                                 view->scale,
1569                                 &width, &height);
1570         if (view->current_page + 1 < ev_page_cache_get_n_pages (view->page_cache)) {
1571                 gint width_2, height_2;
1572                 ev_page_cache_get_size (view->page_cache,
1573                                         view->current_page + 1,
1574                                         view->rotation,
1575                                         view->scale,
1576                                         &width_2, &height_2);
1577                 if (width_2 > width) {
1578                         width = width_2;
1579                         height = height_2;
1580                 }
1581         }
1582         compute_border (view, width, height, &border);
1583
1584         requisition->width = ((width + border.left + border.right) * 2) +
1585                 (view->spacing * 3);
1586         requisition->height = (height + border.top + border.bottom) +
1587                 (view->spacing * 2);
1588
1589         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
1590                 requisition->width = 1;
1591         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
1592                 requisition->width = 1;
1593                 requisition->height = 1;
1594         }
1595 }
1596
1597 static void
1598 ev_view_size_request_single_page (EvView         *view,
1599                                   GtkRequisition *requisition)
1600 {
1601         GtkBorder border;
1602         gint width, height;
1603
1604         ev_page_cache_get_size (view->page_cache,
1605                                 view->current_page,
1606                                 view->rotation,
1607                                 view->scale,
1608                                 &width, &height);
1609         compute_border (view, width, height, &border);
1610
1611         requisition->width = width + border.left + border.right + (2 * view->spacing);
1612         requisition->height = height + border.top + border.bottom + (2 * view->spacing);
1613
1614         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
1615                 requisition->width = 1;
1616                 requisition->height = height + border.top + border.bottom + (2 * view->spacing);
1617         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
1618                 requisition->width = 1;
1619                 requisition->height = 1;
1620         }
1621 }
1622
1623 static void
1624 ev_view_size_request (GtkWidget      *widget,
1625                       GtkRequisition *requisition)
1626 {
1627         EvView *view = EV_VIEW (widget);
1628
1629         if (view->document == NULL) {
1630                 requisition->width = 1;
1631                 requisition->height = 1;
1632                 return;
1633         }
1634
1635         if (view->presentation) {
1636                 requisition->width = 1;
1637                 requisition->height = 1;
1638                 return;
1639         }
1640
1641         if (view->continuous && view->dual_page)
1642                 ev_view_size_request_continuous_dual_page (view, requisition);
1643         else if (view->continuous)
1644                 ev_view_size_request_continuous (view, requisition);
1645         else if (view->dual_page)
1646                 ev_view_size_request_dual_page (view, requisition);
1647         else
1648                 ev_view_size_request_single_page (view, requisition);
1649 }
1650
1651 static void
1652 ev_view_size_allocate (GtkWidget      *widget,
1653                        GtkAllocation  *allocation)
1654 {
1655         EvView *view = EV_VIEW (widget);
1656
1657         if (view->sizing_mode == EV_SIZING_FIT_WIDTH ||
1658             view->sizing_mode == EV_SIZING_BEST_FIT) {
1659
1660                 g_signal_emit (view, signals[SIGNAL_ZOOM_INVALID], 0);
1661
1662                 ev_view_size_request (widget, &widget->requisition);
1663         }
1664
1665         view_set_adjustment_values (view, GTK_ORIENTATION_HORIZONTAL);
1666         view_set_adjustment_values (view, GTK_ORIENTATION_VERTICAL);
1667
1668         if (view->document)
1669                 view_update_range_and_current_page (view);
1670
1671         view->pending_scroll = SCROLL_TO_KEEP_POSITION;
1672         view->pending_resize = FALSE;
1673
1674         GTK_WIDGET_CLASS (ev_view_parent_class)->size_allocate (widget, allocation);
1675 }
1676
1677 static void
1678 ev_view_realize (GtkWidget *widget)
1679 {
1680         EvView *view = EV_VIEW (widget);
1681         GdkWindowAttr attributes;
1682
1683         GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
1684
1685
1686         attributes.window_type = GDK_WINDOW_CHILD;
1687         attributes.wclass = GDK_INPUT_OUTPUT;
1688         attributes.visual = gtk_widget_get_visual (widget);
1689         attributes.colormap = gtk_widget_get_colormap (widget);
1690
1691         attributes.x = widget->allocation.x;
1692         attributes.y = widget->allocation.y;
1693         attributes.width = widget->allocation.width;
1694         attributes.height = widget->allocation.height;
1695         attributes.event_mask = GDK_EXPOSURE_MASK |
1696                                 GDK_BUTTON_PRESS_MASK |
1697                                 GDK_BUTTON_RELEASE_MASK |
1698                                 GDK_SCROLL_MASK |
1699                                 GDK_KEY_PRESS_MASK |
1700                                 GDK_POINTER_MOTION_MASK |
1701                                 GDK_POINTER_MOTION_HINT_MASK |
1702                                 GDK_ENTER_NOTIFY_MASK |
1703                                 GDK_LEAVE_NOTIFY_MASK;
1704
1705         widget->window = gdk_window_new (gtk_widget_get_parent_window (widget),
1706                                          &attributes,
1707                                          GDK_WA_X | GDK_WA_Y |
1708                                          GDK_WA_COLORMAP |
1709                                          GDK_WA_VISUAL);
1710         gdk_window_set_user_data (widget->window, widget);
1711         widget->style = gtk_style_attach (widget->style, widget->window);
1712
1713         if (view->presentation)
1714                 gdk_window_set_background (widget->window, &widget->style->black);
1715         else
1716                 gdk_window_set_background (widget->window, &widget->style->mid [GTK_STATE_NORMAL]);
1717 }
1718
1719 static gboolean
1720 ev_view_scroll_event (GtkWidget *widget, GdkEventScroll *event)
1721 {
1722         EvView *view = EV_VIEW (widget);
1723         guint state;
1724
1725         state = event->state & gtk_accelerator_get_default_mod_mask ();
1726
1727         if (state == GDK_CONTROL_MASK && view->presentation == FALSE) {
1728                 ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1729
1730                 if (event->direction == GDK_SCROLL_UP ||
1731                     event->direction == GDK_SCROLL_LEFT) {
1732                         if (ev_view_can_zoom_in (view)) {
1733                                 ev_view_zoom_in (view);
1734                         }
1735                 } else {
1736                         if (ev_view_can_zoom_out (view)) {
1737                                 ev_view_zoom_out (view);
1738                         }
1739                 }
1740
1741                 return TRUE;
1742         }
1743
1744         view->jump_to_find_result = FALSE;
1745         /* Shift+Wheel scrolls the in the perpendicular direction */
1746         if (state & GDK_SHIFT_MASK) {
1747                 if (event->direction == GDK_SCROLL_UP)
1748                         event->direction = GDK_SCROLL_LEFT;
1749                 if (event->direction == GDK_SCROLL_LEFT)
1750                         event->direction = GDK_SCROLL_UP;
1751                 if (event->direction == GDK_SCROLL_DOWN)
1752                         event->direction = GDK_SCROLL_RIGHT;
1753                 if (event->direction == GDK_SCROLL_RIGHT)
1754                         event->direction = GDK_SCROLL_DOWN;
1755
1756                 event->state &= ~GDK_SHIFT_MASK;
1757                 state &= ~GDK_SHIFT_MASK;
1758         }
1759
1760         if (state == 0 && view->presentation) {
1761                 switch (event->direction) {
1762                         case GDK_SCROLL_DOWN:
1763                         case GDK_SCROLL_RIGHT:
1764                                 ev_view_next_page (view);
1765                                 break;
1766                         case GDK_SCROLL_UP:
1767                         case GDK_SCROLL_LEFT:
1768                                 ev_view_previous_page (view);
1769                                 break;
1770                 }
1771
1772                 return TRUE;
1773         }
1774
1775         return FALSE;
1776 }
1777
1778 static EvViewSelection *
1779 find_selection_for_page (EvView *view,
1780                          gint    page)
1781 {
1782         GList *list;
1783
1784         for (list = view->selection_info.selections; list != NULL; list = list->next) {
1785                 EvViewSelection *selection;
1786
1787                 selection = (EvViewSelection *) list->data;
1788
1789                 if (selection->page == page)
1790                         return selection;
1791         }
1792
1793         return NULL;
1794 }
1795
1796 static void
1797 draw_end_presentation_page (EvView       *view,
1798                             GdkRectangle *page_area)
1799 {
1800         PangoLayout *layout;
1801         PangoFontDescription *font_desc;
1802         gchar *markup;
1803         const gchar *text = _("End of presentation. Press Escape to exit.");
1804
1805         if (view->presentation_state != EV_PRESENTATION_END)
1806                 return;
1807
1808         layout = gtk_widget_create_pango_layout (GTK_WIDGET (view), NULL);
1809         markup = g_strdup_printf ("<span foreground=\"white\">%s</span>", text);
1810         pango_layout_set_markup (layout, markup, -1);
1811         g_free (markup);
1812
1813         font_desc = pango_font_description_new ();
1814         pango_font_description_set_size (font_desc, 16 * PANGO_SCALE);
1815         pango_layout_set_font_description (layout, font_desc);
1816
1817         gtk_paint_layout (GTK_WIDGET (view)->style,
1818                           GTK_WIDGET (view)->window,
1819                           GTK_WIDGET_STATE (view),
1820                           FALSE,
1821                           page_area,
1822                           GTK_WIDGET (view),
1823                           NULL,
1824                           page_area->x + 15,
1825                           page_area->y + 15,
1826                           layout);
1827
1828         pango_font_description_free (font_desc);
1829         g_object_unref (layout);
1830 }
1831
1832 static gboolean
1833 ev_view_expose_event (GtkWidget      *widget,
1834                       GdkEventExpose *event)
1835 {
1836         EvView *view = EV_VIEW (widget);
1837         int i;
1838
1839         if (view->presentation) {
1840                 switch (view->presentation_state) {
1841                         case EV_PRESENTATION_END: {
1842                                 GdkRectangle area = {0};
1843
1844                                 area.width = widget->allocation.width;
1845                                 area.height = widget->allocation.height;
1846
1847                                 draw_end_presentation_page (view, &area);
1848                         }
1849                                 return FALSE;
1850                         case EV_PRESENTATION_BLACK:
1851                         case EV_PRESENTATION_WHITE:
1852                                 return FALSE;
1853                         case EV_PRESENTATION_NORMAL:
1854                         default:
1855                                 break;
1856                 }
1857         }
1858
1859         if (view->loading) {
1860                 GdkRectangle area = {0};
1861
1862                 area.width = widget->allocation.width;
1863                 area.height = widget->allocation.height;
1864
1865                 draw_loading_text (view,
1866                                    &area,
1867                                    &(event->area));
1868         }
1869
1870         if (view->document == NULL)
1871                 return FALSE;
1872
1873         for (i = view->start_page; i <= view->end_page; i++) {
1874                 GdkRectangle page_area;
1875                 GtkBorder border;
1876                 gboolean page_ready = TRUE;
1877
1878                 if (!get_page_extents (view, i, &page_area, &border))
1879                         continue;
1880
1881                 page_area.x -= view->scroll_x;
1882                 page_area.y -= view->scroll_y;
1883
1884                 draw_one_page (view, i, &page_area, &border, &(event->area), &page_ready);
1885
1886                 if (page_ready && EV_IS_DOCUMENT_FIND (view->document))
1887                         highlight_find_results (view, i);
1888         }
1889
1890         return FALSE;
1891 }
1892
1893 static gboolean
1894 ev_view_popup_menu (GtkWidget *widget)
1895 {
1896     gint x, y;
1897     EvLink *link;
1898     EvView *view = EV_VIEW (widget);
1899
1900     gtk_widget_get_pointer (widget, &x, &y);
1901     link = ev_view_get_link_at_location (view, x, y);
1902     g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, link);
1903     return TRUE;
1904 }
1905
1906 static gboolean
1907 ev_view_button_press_event (GtkWidget      *widget,
1908                             GdkEventButton *event)
1909 {
1910         EvView *view = EV_VIEW (widget);
1911         EvLink *link;
1912
1913         if (!GTK_WIDGET_HAS_FOCUS (widget)) {
1914                 gtk_widget_grab_focus (widget);
1915         }
1916
1917         view->pressed_button = event->button;
1918         view->selection_info.in_drag = FALSE;
1919
1920         switch (event->button) {
1921                 case 1:
1922                         if (view->selection_info.selections) {
1923                                 if (location_in_selected_text (view,
1924                                                                event->x + view->scroll_x,
1925                                                                event->y + view->scroll_y)) {
1926                                         view->selection_info.in_drag = TRUE;
1927                                 } else {
1928                                         clear_selection (view);
1929                                 }
1930
1931                                 gtk_widget_queue_draw (widget);
1932                         }
1933
1934                         view->selection_info.start.x = event->x + view->scroll_x;
1935                         view->selection_info.start.y = event->y + view->scroll_y;
1936
1937                         return TRUE;
1938                 case 2:
1939                         /* use root coordinates as reference point because
1940                          * scrolling changes window relative coordinates */
1941                         view->drag_info.start.x = event->x_root;
1942                         view->drag_info.start.y = event->y_root;
1943                         view->drag_info.hadj = gtk_adjustment_get_value (view->hadjustment);
1944                         view->drag_info.vadj = gtk_adjustment_get_value (view->vadjustment);
1945
1946                         ev_view_set_cursor (view, EV_VIEW_CURSOR_DRAG);
1947
1948                         return TRUE;
1949                 case 3:
1950                         link = ev_view_get_link_at_location (view, event->x, event->y);
1951                         g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, link);
1952                         return TRUE;
1953         }
1954
1955         return FALSE;
1956 }
1957
1958 static void
1959 ev_view_drag_data_get (GtkWidget        *widget,
1960                        GdkDragContext   *context,
1961                        GtkSelectionData *selection_data,
1962                        guint             info,
1963                        guint             time)
1964 {
1965         EvView *view = EV_VIEW (widget);
1966
1967         if (view->selection_info.selections &&
1968             ev_document_can_get_text (view->document)) {
1969                 gchar *text;
1970
1971                 text = get_selected_text (view);
1972
1973                 gtk_selection_data_set_text (selection_data, text, strlen (text));
1974
1975                 g_free (text);
1976         }
1977 }
1978
1979 static gboolean
1980 selection_update_idle_cb (EvView *view)
1981 {
1982         compute_selections (view, &view->selection_info.start, &view->motion);
1983         view->selection_update_id = 0;
1984         return FALSE;
1985 }
1986
1987 static gboolean
1988 selection_scroll_timeout_cb (EvView *view)
1989 {
1990         gint x, y, shift = 0;
1991         GtkWidget *widget = GTK_WIDGET (view);
1992
1993         gtk_widget_get_pointer (widget, &x, &y);
1994
1995         if (y > widget->allocation.height) {
1996                 shift = (y - widget->allocation.height) / 2;
1997         } else if (y < 0) {
1998                 shift = y / 2;
1999         }
2000
2001         if (shift)
2002                 gtk_adjustment_set_value (view->vadjustment,
2003                                           CLAMP (view->vadjustment->value + shift,
2004                                           view->vadjustment->lower,
2005                                           view->vadjustment->upper -
2006                                           view->vadjustment->page_size));
2007
2008         if (x > widget->allocation.width) {
2009                 shift = (x - widget->allocation.width) / 2;
2010         } else if (x < 0) {
2011                 shift = x / 2;
2012         }
2013
2014         if (shift)
2015                 gtk_adjustment_set_value (view->hadjustment,
2016                                           CLAMP (view->hadjustment->value + shift,
2017                                           view->hadjustment->lower,
2018                                           view->hadjustment->upper -
2019                                           view->hadjustment->page_size));
2020
2021         return TRUE;
2022 }
2023
2024 static gboolean
2025 ev_view_motion_notify_event (GtkWidget      *widget,
2026                              GdkEventMotion *event)
2027 {
2028         EvView *view = EV_VIEW (widget);
2029         gint x, y;
2030
2031         if (!view->document)
2032                 return FALSE;
2033
2034         if (event->is_hint || event->window != widget->window) {
2035             gtk_widget_get_pointer (widget, &x, &y);
2036         } else {
2037             x = event->x;
2038             y = event->y;
2039         }
2040
2041         if (view->selection_info.in_drag) {
2042                 if (gtk_drag_check_threshold (widget,
2043                                               view->selection_info.start.x,
2044                                               view->selection_info.start.y,
2045                                               x, y)) {
2046                         GdkDragContext *context;
2047                         GtkTargetList *target_list = gtk_target_list_new (NULL, 0);
2048
2049                         gtk_target_list_add_text_targets (target_list, 0);
2050
2051                         context = gtk_drag_begin (widget, target_list,
2052                                                   GDK_ACTION_COPY,
2053                                                   1, (GdkEvent *)event);
2054
2055                         view->selection_info.in_drag = FALSE;
2056
2057                         gtk_target_list_unref (target_list);
2058
2059                         return TRUE;
2060                 }
2061         }
2062
2063         /* For the Evince 0.4.x release, we limit selection to un-rotated
2064          * documents only.
2065          */
2066         if (view->pressed_button == 1 && view->rotation == 0) {
2067
2068                 /* Schedule timeout to scroll during selection and additionally
2069                  * scroll once to allow arbitrary speed. */
2070                 if (!view->selection_scroll_id)
2071                     view->selection_scroll_id = g_timeout_add (SCROLL_TIME, (GSourceFunc)selection_scroll_timeout_cb, view);
2072                 else
2073                     selection_scroll_timeout_cb (view);
2074
2075                 view->selection_info.in_selection = TRUE;
2076                 view->motion.x = x + view->scroll_x;
2077                 view->motion.y = y + view->scroll_y;
2078
2079                 /* Queue an idle to handle the motion.  We do this because
2080                  * handling any selection events in the motion could be slower
2081                  * than new motion events reach us.  We always put it in the
2082                  * idle to make sure we catch up and don't visibly lag the
2083                  * mouse. */
2084                 if (!view->selection_update_id)
2085                         view->selection_update_id = g_idle_add ((GSourceFunc)selection_update_idle_cb, view);
2086
2087                 return TRUE;
2088         } else if (view->pressed_button == 2) {
2089                 if (!view->drag_info.in_drag) {
2090                         gboolean start;
2091
2092                         start = gtk_drag_check_threshold (widget,
2093                                                           view->drag_info.start.x,
2094                                                           view->drag_info.start.y,
2095                                                           event->x_root,
2096                                                           event->y_root);
2097                         view->drag_info.in_drag = start;
2098                 }
2099
2100                 if (view->drag_info.in_drag) {
2101                         int dx, dy;
2102                         gdouble dhadj_value, dvadj_value;
2103
2104                         dx = event->x_root - view->drag_info.start.x;
2105                         dy = event->y_root - view->drag_info.start.y;
2106
2107                         dhadj_value = view->hadjustment->page_size *
2108                                       (gdouble)dx / widget->allocation.width;
2109                         dvadj_value = view->vadjustment->page_size *
2110                                       (gdouble)dy / widget->allocation.height;
2111
2112                         /* clamp scrolling to visible area */
2113                         gtk_adjustment_set_value (view->hadjustment,
2114                                                   MIN(view->drag_info.hadj - dhadj_value,
2115                                                       view->hadjustment->upper -
2116                                                       view->hadjustment->page_size));
2117                         gtk_adjustment_set_value (view->vadjustment,
2118                                                   MIN(view->drag_info.vadj - dvadj_value,
2119                                                       view->vadjustment->upper -
2120                                                       view->vadjustment->page_size));
2121
2122                         return TRUE;
2123                 }
2124         } else if (view->pressed_button <= 0) {
2125                 handle_link_over_xy (view, x, y);
2126                 return TRUE;
2127         }
2128
2129         return FALSE;
2130 }
2131
2132 static gboolean
2133 ev_view_button_release_event (GtkWidget      *widget,
2134                               GdkEventButton *event)
2135 {
2136         EvView *view = EV_VIEW (widget);
2137         EvLink *link;
2138
2139         if (view->pressed_button == 2) {
2140                 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
2141         }
2142
2143         if (view->document && view->pressed_button == 1) {
2144                 link = ev_view_get_link_at_location (view, event->x, event->y);
2145         } else {
2146                 link = NULL;
2147         }
2148
2149         view->pressed_button = -1;
2150         view->drag_info.in_drag = FALSE;
2151
2152         if (view->selection_scroll_id) {
2153             g_source_remove (view->selection_scroll_id);
2154             view->selection_scroll_id = 0;
2155         }
2156         if (view->selection_update_id) {
2157             g_source_remove (view->selection_update_id);
2158             view->selection_update_id = 0;
2159         }
2160
2161         if (view->selection_info.selections) {
2162                 ev_view_update_primary_selection (view);
2163
2164                 if (view->selection_info.in_drag) {
2165                         clear_selection (view);
2166                         gtk_widget_queue_draw (widget);
2167                 }
2168
2169                 view->selection_info.in_drag = FALSE;
2170         } else if (link) {
2171                 ev_view_handle_link (view, link);
2172         } else if (view->presentation) {
2173                 switch (event->button) {
2174                         case 1:
2175                                 ev_view_next_page (view);
2176                                 return TRUE;
2177                         case 3:
2178                                 ev_view_previous_page (view);
2179                                 return TRUE;
2180                 }
2181         }
2182
2183         return FALSE;
2184 }
2185
2186 /* Goto Window */
2187 /* Cut and paste from gtkwindow.c */
2188 static void
2189 send_focus_change (GtkWidget *widget,
2190                    gboolean   in)
2191 {
2192         GdkEvent *fevent = gdk_event_new (GDK_FOCUS_CHANGE);
2193
2194         g_object_ref (widget);
2195
2196         if (in)
2197                 GTK_WIDGET_SET_FLAGS (widget, GTK_HAS_FOCUS);
2198         else
2199                 GTK_WIDGET_UNSET_FLAGS (widget, GTK_HAS_FOCUS);
2200
2201         fevent->focus_change.type = GDK_FOCUS_CHANGE;
2202         fevent->focus_change.window = g_object_ref (widget->window);
2203         fevent->focus_change.in = in;
2204
2205         gtk_widget_event (widget, fevent);
2206
2207         g_object_notify (G_OBJECT (widget), "has-focus");
2208
2209         g_object_unref (widget);
2210         gdk_event_free (fevent);
2211 }
2212
2213 static void
2214 ev_view_goto_window_hide (EvView *view)
2215 {
2216         /* send focus-in event */
2217         send_focus_change (view->goto_entry, FALSE);
2218         gtk_widget_hide (view->goto_window);
2219         gtk_entry_set_text (GTK_ENTRY (view->goto_entry), "");
2220 }
2221
2222 static gboolean
2223 ev_view_goto_window_delete_event (GtkWidget   *widget,
2224                                   GdkEventAny *event,
2225                                   EvView      *view)
2226 {
2227         ev_view_goto_window_hide (view);
2228
2229         return TRUE;
2230 }
2231
2232 static gboolean
2233 key_is_numeric (guint keyval)
2234 {
2235         return ((keyval >= GDK_0 && keyval <= GDK_9) ||
2236                 (keyval >= GDK_KP_0 && keyval <= GDK_KP_9));
2237 }
2238
2239 static gboolean
2240 ev_view_goto_window_key_press_event (GtkWidget   *widget,
2241                                      GdkEventKey *event,
2242                                      EvView      *view)
2243 {
2244         switch (event->keyval) {
2245                 case GDK_Escape:
2246                 case GDK_Tab:
2247                 case GDK_KP_Tab:
2248                 case GDK_ISO_Left_Tab:
2249                         ev_view_goto_window_hide (view);
2250                         return TRUE;
2251                 case GDK_Return:
2252                 case GDK_KP_Enter:
2253                 case GDK_ISO_Enter:
2254                         return FALSE;
2255                 default:
2256                         if (!key_is_numeric (event->keyval))
2257                                 return TRUE;
2258         }
2259
2260         return FALSE;
2261 }
2262
2263 static gboolean
2264 ev_view_goto_window_button_press_event (GtkWidget      *widget,
2265                                         GdkEventButton *event,
2266                                         EvView         *view)
2267 {
2268         ev_view_goto_window_hide (view);
2269
2270         return TRUE;
2271 }
2272
2273 static void
2274 ev_view_goto_entry_activate (GtkEntry *entry,
2275                              EvView   *view)
2276 {
2277         const gchar *text;
2278         gint         page;
2279
2280         text = gtk_entry_get_text (entry);
2281         page = atoi (text) - 1;
2282
2283         ev_view_goto_window_hide (view);
2284
2285         if (page >= 0 &&
2286             page < ev_page_cache_get_n_pages (view->page_cache))
2287                 ev_page_cache_set_current_page (view->page_cache, page);
2288 }
2289
2290 static void
2291 ev_view_goto_window_create (EvView *view)
2292 {
2293         GtkWidget *frame, *hbox, *toplevel, *label;
2294
2295         toplevel = gtk_widget_get_toplevel (GTK_WIDGET (view));
2296
2297         if (view->goto_window) {
2298                 if (GTK_WINDOW (toplevel)->group)
2299                         gtk_window_group_add_window (GTK_WINDOW (toplevel)->group,
2300                                                      GTK_WINDOW (view->goto_window));
2301                 else if (GTK_WINDOW (view->goto_window)->group)
2302                         gtk_window_group_remove_window (GTK_WINDOW (view->goto_window)->group,
2303                                                         GTK_WINDOW (view->goto_window));
2304                 return;
2305         }
2306
2307         view->goto_window = gtk_window_new (GTK_WINDOW_POPUP);
2308
2309         if (GTK_WINDOW (toplevel)->group)
2310                 gtk_window_group_add_window (GTK_WINDOW (toplevel)->group,
2311                                              GTK_WINDOW (view->goto_window));
2312
2313         gtk_window_set_modal (GTK_WINDOW (view->goto_window), TRUE);
2314
2315         g_signal_connect (view->goto_window, "delete_event",
2316                           G_CALLBACK (ev_view_goto_window_delete_event),
2317                           view);
2318         g_signal_connect (view->goto_window, "key_press_event",
2319                           G_CALLBACK (ev_view_goto_window_key_press_event),
2320                           view);
2321         g_signal_connect (view->goto_window, "button_press_event",
2322                           G_CALLBACK (ev_view_goto_window_button_press_event),
2323                           view);
2324
2325         frame = gtk_frame_new (NULL);
2326         gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_ETCHED_IN);
2327         gtk_container_add (GTK_CONTAINER (view->goto_window), frame);
2328         gtk_widget_show (frame);
2329
2330         hbox = gtk_hbox_new (FALSE, 0);
2331         gtk_container_set_border_width (GTK_CONTAINER (hbox), 3);
2332         gtk_container_add (GTK_CONTAINER (frame), hbox);
2333         gtk_widget_show (hbox);
2334
2335         label = gtk_label_new(_("Jump to page:"));
2336         gtk_box_pack_start (GTK_BOX (hbox), label, TRUE, TRUE, 3);
2337         gtk_widget_show (label);
2338         gtk_widget_realize (label);
2339
2340         view->goto_entry = gtk_entry_new ();
2341         g_signal_connect (view->goto_entry, "activate",
2342                           G_CALLBACK (ev_view_goto_entry_activate),
2343                           view);
2344         gtk_box_pack_start_defaults (GTK_BOX (hbox), view->goto_entry);
2345         gtk_widget_show (view->goto_entry);
2346         gtk_widget_realize (view->goto_entry);
2347 }
2348
2349 static void
2350 ev_view_goto_entry_grab_focus (EvView *view)
2351 {
2352         GtkWidgetClass *entry_parent_class;
2353
2354         entry_parent_class = g_type_class_peek_parent (GTK_ENTRY_GET_CLASS (view->goto_entry));
2355         (entry_parent_class->grab_focus) (view->goto_entry);
2356
2357         send_focus_change (view->goto_entry, TRUE);
2358 }
2359
2360 static void
2361 ev_view_goto_window_send_key_event (EvView   *view,
2362                                     GdkEvent *event)
2363 {
2364         GdkEventKey *new_event;
2365         GdkScreen   *screen;
2366
2367         /* Move goto window off screen */
2368         screen = gtk_widget_get_screen (GTK_WIDGET (view));
2369         gtk_window_move (GTK_WINDOW (view->goto_window),
2370                          gdk_screen_get_width (screen) + 1,
2371                          gdk_screen_get_height (screen) + 1);
2372         gtk_widget_show (view->goto_window);
2373
2374         new_event = (GdkEventKey *) gdk_event_copy (event);
2375         g_object_unref (new_event->window);
2376         new_event->window = g_object_ref (view->goto_window->window);
2377         gtk_widget_realize (view->goto_window);
2378
2379         gtk_widget_event (view->goto_window, (GdkEvent *)new_event);
2380         gdk_event_free ((GdkEvent *)new_event);
2381         gtk_widget_hide (view->goto_window);
2382 }
2383
2384 static gboolean
2385 ev_view_key_press_event (GtkWidget   *widget,
2386                          GdkEventKey *event)
2387 {
2388         EvView *view = EV_VIEW (widget);
2389         EvPresentationState current;
2390
2391         if (!view->presentation ||
2392             view->presentation_state == EV_PRESENTATION_END)
2393                 return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
2394
2395
2396         current = view->presentation_state;
2397
2398         switch (event->keyval) {
2399                 case GDK_b:
2400                 case GDK_B:
2401                         view->presentation_state =
2402                                 (view->presentation_state == EV_PRESENTATION_BLACK) ?
2403                                 EV_PRESENTATION_NORMAL : EV_PRESENTATION_BLACK;
2404                         break;
2405                 case GDK_w:
2406                 case GDK_W:
2407                         view->presentation_state =
2408                                 (view->presentation_state == EV_PRESENTATION_WHITE) ?
2409                                 EV_PRESENTATION_NORMAL : EV_PRESENTATION_WHITE;
2410                         break;
2411                 default:
2412                         if (view->presentation_state == EV_PRESENTATION_BLACK ||
2413                             view->presentation_state == EV_PRESENTATION_WHITE) {
2414                                 view->presentation_state = EV_PRESENTATION_NORMAL;
2415                         }
2416         }
2417
2418         if (current == view->presentation_state) {
2419                 if (ev_page_cache_get_n_pages (view->page_cache) > 1 &&
2420                     key_is_numeric (event->keyval)) {
2421                         gint x, y;
2422
2423                         ev_view_goto_window_create (view);
2424                         ev_view_goto_window_send_key_event (view, (GdkEvent *)event);
2425                         gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
2426                         gtk_window_move (GTK_WINDOW (view->goto_window), x, y);
2427                         gtk_widget_show (view->goto_window);
2428                         ev_view_goto_entry_grab_focus (view);
2429
2430                         return TRUE;
2431                 }
2432
2433                 return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
2434         }
2435
2436         switch (view->presentation_state) {
2437                 case EV_PRESENTATION_NORMAL:
2438                 case EV_PRESENTATION_BLACK:
2439                         gdk_window_set_background (widget->window,
2440                                                    &widget->style->black);
2441                         break;
2442                 case EV_PRESENTATION_WHITE:
2443                         gdk_window_set_background (widget->window,
2444                                                    &widget->style->white);
2445                         break;
2446                 default:
2447                         return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
2448         }
2449
2450         gtk_widget_queue_draw (widget);
2451         return TRUE;
2452 }
2453
2454 static gint
2455 ev_view_focus_in (GtkWidget     *widget,
2456                   GdkEventFocus *event)
2457 {
2458         if (EV_VIEW (widget)->pixbuf_cache)
2459                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
2460         gtk_widget_queue_draw (widget);
2461
2462         return FALSE;
2463 }
2464
2465 static gint
2466 ev_view_focus_out (GtkWidget     *widget,
2467                      GdkEventFocus *event)
2468 {
2469         if (EV_VIEW (widget)->goto_window)
2470                 ev_view_goto_window_hide (EV_VIEW (widget));
2471
2472         if (EV_VIEW (widget)->pixbuf_cache)
2473                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
2474         gtk_widget_queue_draw (widget);
2475
2476         return FALSE;
2477 }
2478
2479 static gboolean
2480 ev_view_leave_notify_event (GtkWidget *widget, GdkEventCrossing   *event)
2481 {
2482         EvView *view = EV_VIEW (widget);
2483
2484         ev_view_set_status (view, NULL);
2485
2486         if (view->cursor == EV_VIEW_CURSOR_LINK ||
2487             view->cursor == EV_VIEW_CURSOR_IBEAM)
2488                 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
2489
2490         if (view->link_tooltip) {
2491                 view->hovered_link = NULL;
2492                 ev_tooltip_deactivate (EV_TOOLTIP (view->link_tooltip));
2493         }
2494
2495         return FALSE;
2496 }
2497
2498 static gboolean
2499 ev_view_enter_notify_event (GtkWidget *widget, GdkEventCrossing   *event)
2500 {
2501         EvView *view = EV_VIEW (widget);
2502
2503         handle_link_over_xy (view, event->x, event->y);
2504
2505         return FALSE;
2506 }
2507
2508 static void
2509 ev_view_style_set (GtkWidget *widget,
2510                    GtkStyle  *old_style)
2511 {
2512         if (EV_VIEW (widget)->pixbuf_cache)
2513                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
2514
2515         GTK_WIDGET_CLASS (ev_view_parent_class)->style_set (widget, old_style);
2516 }
2517
2518 /*** Drawing ***/
2519
2520 static guint32
2521 ev_gdk_color_to_rgb (const GdkColor *color)
2522 {
2523   guint32 result;
2524   result = (0xff0000 | (color->red & 0xff00));
2525   result <<= 8;
2526   result |= ((color->green & 0xff00) | (color->blue >> 8));
2527   return result;
2528 }
2529
2530 static void
2531 draw_rubberband (GtkWidget *widget, GdkWindow *window,
2532                  const GdkRectangle *rect, guchar alpha)
2533 {
2534         GdkGC *gc;
2535         GdkPixbuf *pixbuf;
2536         GdkColor *fill_color_gdk;
2537         guint fill_color;
2538
2539         fill_color_gdk = gdk_color_copy (&GTK_WIDGET (widget)->style->base[GTK_STATE_SELECTED]);
2540         fill_color = ev_gdk_color_to_rgb (fill_color_gdk) << 8 | alpha;
2541
2542         pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE, 8,
2543                                  rect->width, rect->height);
2544         gdk_pixbuf_fill (pixbuf, fill_color);
2545
2546         gdk_draw_pixbuf (window, NULL, pixbuf,
2547                          0, 0,
2548                          rect->x - EV_VIEW (widget)->scroll_x, rect->y - EV_VIEW (widget)->scroll_y,
2549                          rect->width, rect->height,
2550                          GDK_RGB_DITHER_NONE,
2551                          0, 0);
2552
2553         g_object_unref (pixbuf);
2554
2555         gc = gdk_gc_new (window);
2556         gdk_gc_set_rgb_fg_color (gc, fill_color_gdk);
2557         gdk_draw_rectangle (window, gc, FALSE,
2558                             rect->x - EV_VIEW (widget)->scroll_x, rect->y - EV_VIEW (widget)->scroll_y,
2559                             rect->width - 1,
2560                             rect->height - 1);
2561         g_object_unref (gc);
2562
2563         gdk_color_free (fill_color_gdk);
2564 }
2565
2566
2567 static void
2568 highlight_find_results (EvView *view, int page)
2569 {
2570         EvDocumentFind *find;
2571         int i, results = 0;
2572
2573         g_return_if_fail (EV_IS_DOCUMENT_FIND (view->document));
2574
2575         find = EV_DOCUMENT_FIND (view->document);
2576
2577         results = ev_document_find_get_n_results (find, page);
2578
2579         for (i = 0; i < results; i++) {
2580                 EvRectangle rectangle;
2581                 GdkRectangle view_rectangle;
2582                 guchar alpha;
2583
2584                 if (i == view->find_result && page == view->current_page) {
2585                         alpha = 0x90;
2586                 } else {
2587                         alpha = 0x20;
2588                 }
2589
2590                 ev_document_find_get_result (find, page, i, &rectangle);
2591                 doc_rect_to_view_rect (view, page, &rectangle, &view_rectangle);
2592                 draw_rubberband (GTK_WIDGET (view), GTK_WIDGET(view)->window,
2593                                  &view_rectangle, alpha);
2594         }
2595 }
2596
2597 static void
2598 draw_loading_text (EvView       *view,
2599                    GdkRectangle *page_area,
2600                    GdkRectangle *expose_area)
2601 {
2602         const char *loading_text;
2603         PangoLayout *layout;
2604         PangoFontDescription *font_desc;
2605         PangoRectangle logical_rect;
2606         double real_scale;
2607         int target_width;
2608
2609         /* Don't annoy users with loading messages during presentations.
2610          * FIXME: Temporary "workaround" for
2611          * http://bugzilla.gnome.org/show_bug.cgi?id=320352 */
2612         if (view->presentation)
2613                 return;
2614
2615         loading_text = _("Loading...");
2616
2617         ev_document_fc_mutex_lock ();
2618
2619         layout = gtk_widget_create_pango_layout (GTK_WIDGET (view), loading_text);
2620
2621         font_desc = pango_font_description_new ();
2622
2623
2624         /* We set the font to be 10 points, get the size, and scale appropriately */
2625         pango_font_description_set_size (font_desc, 10 * PANGO_SCALE);
2626         pango_layout_set_font_description (layout, font_desc);
2627         pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
2628
2629         /* Make sure we fit the middle of the page */
2630         target_width = MAX (page_area->width / 2, 1);
2631         real_scale = ((double)target_width / (double) logical_rect.width) * (PANGO_SCALE * 10);
2632         pango_font_description_set_size (font_desc, (int)real_scale);
2633         pango_layout_set_font_description (layout, font_desc);
2634         pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
2635
2636         gtk_paint_layout (GTK_WIDGET (view)->style,
2637                           GTK_WIDGET (view)->window,
2638                           GTK_WIDGET_STATE (view),
2639                           FALSE,
2640                           page_area,
2641                           GTK_WIDGET (view),
2642                           NULL,
2643                           page_area->x + (target_width/2),
2644                           page_area->y + (page_area->height - logical_rect.height) / 2,
2645                           layout);
2646
2647         pango_font_description_free (font_desc);
2648         g_object_unref (layout);
2649
2650         ev_document_fc_mutex_unlock ();
2651 }
2652
2653 static void
2654 draw_one_page (EvView          *view,
2655                gint             page,
2656                GdkRectangle    *page_area,
2657                GtkBorder       *border,
2658                GdkRectangle    *expose_area,
2659                gboolean        *page_ready)
2660 {
2661         gint width, height;
2662         GdkPixbuf *current_pixbuf;
2663         GdkRectangle overlap;
2664         GdkRectangle real_page_area;
2665         EvViewSelection *selection;
2666         gint current_page;
2667
2668         g_assert (view->document);
2669
2670         if (! gdk_rectangle_intersect (page_area, expose_area, &overlap))
2671                 return;
2672
2673         current_page = ev_page_cache_get_current_page (view->page_cache);
2674         selection = find_selection_for_page (view, page);
2675         ev_page_cache_get_size (view->page_cache,
2676                                 page, view->rotation,
2677                                 view->scale,
2678                                 &width, &height);
2679         /* Render the document itself */
2680         real_page_area = *page_area;
2681
2682         real_page_area.x += border->left;
2683         real_page_area.y += border->top;
2684         real_page_area.width -= (border->left + border->right);
2685         real_page_area.height -= (border->top + border->bottom);
2686         *page_ready = TRUE;
2687
2688         ev_document_misc_paint_one_page (GTK_WIDGET(view)->window,
2689                                          GTK_WIDGET (view),
2690                                          page_area, border,
2691                                          page == current_page);
2692
2693         if (gdk_rectangle_intersect (&real_page_area, expose_area, &overlap)) {
2694                 GdkPixbuf *selection_pixbuf = NULL;
2695                 GdkPixbuf *scaled_image;
2696                 GdkPixbuf *scaled_selection;
2697
2698                 current_pixbuf = ev_pixbuf_cache_get_pixbuf (view->pixbuf_cache, page);
2699
2700                 /* Get the selection pixbuf iff we have something to draw */
2701                 if (current_pixbuf && view->selection_mode == EV_VIEW_SELECTION_TEXT && selection)
2702                         selection_pixbuf = ev_pixbuf_cache_get_selection_pixbuf (view->pixbuf_cache,
2703                                                                                  page,
2704                                                                                  view->scale,
2705                                                                                  NULL);
2706
2707                 if (current_pixbuf == NULL)
2708                         scaled_image = NULL;
2709                 else if (width == gdk_pixbuf_get_width (current_pixbuf) &&
2710                          height == gdk_pixbuf_get_height (current_pixbuf))
2711                         scaled_image = g_object_ref (current_pixbuf);
2712                 else
2713                         /* FIXME: We don't want to scale the whole area, just the right
2714                          * area of it */
2715                         scaled_image = gdk_pixbuf_scale_simple (current_pixbuf,
2716                                                                 width, height,
2717                                                                 GDK_INTERP_NEAREST);
2718
2719                 if (selection_pixbuf == NULL)
2720                         scaled_selection = NULL;
2721                 else if (width == gdk_pixbuf_get_width (selection_pixbuf) &&
2722                          height == gdk_pixbuf_get_height (selection_pixbuf))
2723                         scaled_selection = g_object_ref (selection_pixbuf);
2724                 else
2725                         /* FIXME: We don't want to scale the whole area, just the right
2726                          * area of it */
2727                         scaled_selection = gdk_pixbuf_scale_simple (selection_pixbuf,
2728                                                                     width, height,
2729                                                                     GDK_INTERP_NEAREST);
2730
2731                 if (scaled_image) {
2732                         gdk_draw_pixbuf (GTK_WIDGET(view)->window,
2733                                          GTK_WIDGET (view)->style->fg_gc[GTK_STATE_NORMAL],
2734                                          scaled_image,
2735                                          overlap.x - real_page_area.x,
2736                                          overlap.y - real_page_area.y,
2737                                          overlap.x, overlap.y,
2738                                          overlap.width, overlap.height,
2739                                          GDK_RGB_DITHER_NORMAL,
2740                                          0, 0);
2741                         g_object_unref (scaled_image);
2742                 } else {
2743                         draw_loading_text (view,
2744                                            &real_page_area,
2745                                            expose_area);
2746                         *page_ready = FALSE;
2747                 }
2748
2749                 if (scaled_selection) {
2750                         gdk_draw_pixbuf (GTK_WIDGET(view)->window,
2751                                          GTK_WIDGET (view)->style->fg_gc[GTK_STATE_NORMAL],
2752                                          scaled_selection,
2753                                          overlap.x - real_page_area.x,
2754                                          overlap.y - real_page_area.y,
2755                                          overlap.x, overlap.y,
2756                                          overlap.width, overlap.height,
2757                                          GDK_RGB_DITHER_NORMAL,
2758                                          0, 0);
2759                         g_object_unref (scaled_selection);
2760                 }
2761         }
2762 }
2763
2764 /*** GObject functions ***/
2765
2766 static void
2767 ev_view_finalize (GObject *object)
2768 {
2769         EvView *view = EV_VIEW (object);
2770
2771         LOG ("Finalize");
2772
2773         g_free (view->status);
2774         g_free (view->find_status);
2775
2776         clear_selection (view);
2777
2778         G_OBJECT_CLASS (ev_view_parent_class)->finalize (object);
2779 }
2780
2781 static void
2782 ev_view_destroy (GtkObject *object)
2783 {
2784         EvView *view = EV_VIEW (object);
2785
2786         if (view->document) {
2787                 g_object_unref (view->document);
2788                 view->document = NULL;
2789         }
2790
2791         if (view->pixbuf_cache) {
2792                 g_object_unref (view->pixbuf_cache);
2793                 view->pixbuf_cache = NULL;
2794         }
2795
2796         if (view->link_tooltip) {
2797                 gtk_widget_destroy (view->link_tooltip);
2798                 view->link_tooltip = NULL;
2799         }
2800
2801         if (view->goto_window) {
2802                 gtk_widget_destroy (view->goto_window);
2803                 view->goto_window = NULL;
2804                 view->goto_entry = NULL;
2805         }
2806
2807         if (view->selection_scroll_id) {
2808             g_source_remove (view->selection_scroll_id);
2809             view->selection_scroll_id = 0;
2810         }
2811
2812         if (view->selection_update_id) {
2813             g_source_remove (view->selection_update_id);
2814             view->selection_update_id = 0;
2815         }
2816
2817         ev_view_set_scroll_adjustments (view, NULL, NULL);
2818
2819         GTK_OBJECT_CLASS (ev_view_parent_class)->destroy (object);
2820 }
2821
2822 static void
2823 ev_view_set_property (GObject      *object,
2824                       guint         prop_id,
2825                       const GValue *value,
2826                       GParamSpec   *pspec)
2827 {
2828         EvView *view = EV_VIEW (object);
2829
2830         switch (prop_id) {
2831                 case PROP_CONTINUOUS:
2832                         ev_view_set_continuous (view, g_value_get_boolean (value));
2833                         break;
2834                 case PROP_DUAL_PAGE:
2835                         ev_view_set_dual_page (view, g_value_get_boolean (value));
2836                         break;
2837                 case PROP_FULLSCREEN:
2838                         ev_view_set_fullscreen (view, g_value_get_boolean (value));
2839                         break;
2840                 case PROP_PRESENTATION:
2841                         ev_view_set_presentation (view, g_value_get_boolean (value));
2842                         break;
2843                 case PROP_SIZING_MODE:
2844                         ev_view_set_sizing_mode (view, g_value_get_enum (value));
2845                         break;
2846                 case PROP_ZOOM:
2847                         ev_view_set_zoom (view, g_value_get_double (value), FALSE);
2848                         break;
2849                 case PROP_ROTATION:
2850                         ev_view_set_rotation (view, g_value_get_int (value));
2851                         break;
2852                 default:
2853                         G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
2854         }
2855 }
2856
2857 static AtkObject *
2858 ev_view_get_accessible (GtkWidget *widget)
2859 {
2860         static gboolean first_time = TRUE;
2861
2862         if (first_time) {
2863                 AtkObjectFactory *factory;
2864                 AtkRegistry *registry;
2865                 GType derived_type;
2866                 GType derived_atk_type;
2867
2868                 /*
2869                  * Figure out whether accessibility is enabled by looking at the
2870                  * type of the accessible object which would be created for
2871                  * the parent type of EvView.
2872                  */
2873                 derived_type = g_type_parent (EV_TYPE_VIEW);
2874
2875                 registry = atk_get_default_registry ();
2876                 factory = atk_registry_get_factory (registry,
2877                                                     derived_type);
2878                 derived_atk_type = atk_object_factory_get_accessible_type (factory);
2879                 if (g_type_is_a (derived_atk_type, GTK_TYPE_ACCESSIBLE))
2880                         atk_registry_set_factory_type (registry,
2881                                                        EV_TYPE_VIEW,
2882                                                        ev_view_accessible_factory_get_type ());
2883                 first_time = FALSE;
2884         }
2885         return GTK_WIDGET_CLASS (ev_view_parent_class)->get_accessible (widget);
2886 }
2887
2888 static void
2889 ev_view_get_property (GObject *object,
2890                       guint prop_id,
2891                       GValue *value,
2892                       GParamSpec *pspec)
2893 {
2894         EvView *view = EV_VIEW (object);
2895
2896         switch (prop_id) {
2897                 case PROP_STATUS:
2898                         g_value_set_string (value, view->status);
2899                         break;
2900                 case PROP_FIND_STATUS:
2901                         g_value_set_string (value, view->status);
2902                         break;
2903                 case PROP_CONTINUOUS:
2904                         g_value_set_boolean (value, view->continuous);
2905                         break;
2906                 case PROP_DUAL_PAGE:
2907                         g_value_set_boolean (value, view->dual_page);
2908                         break;
2909                 case PROP_FULLSCREEN:
2910                         g_value_set_boolean (value, view->fullscreen);
2911                         break;
2912                 case PROP_PRESENTATION:
2913                         g_value_set_boolean (value, view->presentation);
2914                         break;
2915                 case PROP_SIZING_MODE:
2916                         g_value_set_enum (value, view->sizing_mode);
2917                         break;
2918                 case PROP_ZOOM:
2919                         g_value_set_double (value, view->scale);
2920                         break;
2921                 case PROP_ROTATION:
2922                         g_value_set_int (value, view->rotation);
2923                         break;
2924                 case PROP_HAS_SELECTION:
2925                         g_value_set_boolean (value,
2926                                              view->selection_info.selections != NULL);
2927                         break;
2928                 default:
2929                         G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
2930         }
2931 }
2932
2933 static void
2934 ev_view_class_init (EvViewClass *class)
2935 {
2936         GObjectClass *object_class = G_OBJECT_CLASS (class);
2937         GtkObjectClass *gtk_object_class = GTK_OBJECT_CLASS (class);
2938         GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
2939         GtkBindingSet *binding_set;
2940
2941         object_class->finalize = ev_view_finalize;
2942         object_class->set_property = ev_view_set_property;
2943         object_class->get_property = ev_view_get_property;
2944
2945         widget_class->expose_event = ev_view_expose_event;
2946         widget_class->button_press_event = ev_view_button_press_event;
2947         widget_class->motion_notify_event = ev_view_motion_notify_event;
2948         widget_class->button_release_event = ev_view_button_release_event;
2949         widget_class->key_press_event = ev_view_key_press_event;
2950         widget_class->focus_in_event = ev_view_focus_in;
2951         widget_class->focus_out_event = ev_view_focus_out;
2952         widget_class->get_accessible = ev_view_get_accessible;
2953         widget_class->size_request = ev_view_size_request;
2954         widget_class->size_allocate = ev_view_size_allocate;
2955         widget_class->realize = ev_view_realize;
2956         widget_class->scroll_event = ev_view_scroll_event;
2957         widget_class->enter_notify_event = ev_view_enter_notify_event;
2958         widget_class->leave_notify_event = ev_view_leave_notify_event;
2959         widget_class->style_set = ev_view_style_set;
2960         widget_class->drag_data_get = ev_view_drag_data_get;
2961         widget_class->popup_menu = ev_view_popup_menu;
2962         gtk_object_class->destroy = ev_view_destroy;
2963
2964         class->set_scroll_adjustments = ev_view_set_scroll_adjustments;
2965         class->binding_activated = ev_view_scroll;
2966
2967         widget_class->set_scroll_adjustments_signal =
2968             g_signal_new ("set-scroll-adjustments",
2969                           G_OBJECT_CLASS_TYPE (object_class),
2970                           G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
2971                           G_STRUCT_OFFSET (EvViewClass, set_scroll_adjustments),
2972                           NULL, NULL,
2973                           ev_marshal_VOID__OBJECT_OBJECT,
2974                           G_TYPE_NONE, 2,
2975                           GTK_TYPE_ADJUSTMENT,
2976                           GTK_TYPE_ADJUSTMENT);
2977
2978         signals[SIGNAL_BINDING_ACTIVATED] = g_signal_new ("binding_activated",
2979                          G_TYPE_FROM_CLASS (object_class),
2980                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
2981                          G_STRUCT_OFFSET (EvViewClass, binding_activated),
2982                          NULL, NULL,
2983                          ev_marshal_VOID__ENUM_BOOLEAN,
2984                          G_TYPE_NONE, 2,
2985                          GTK_TYPE_SCROLL_TYPE,
2986                          G_TYPE_BOOLEAN);
2987
2988         signals[SIGNAL_ZOOM_INVALID] = g_signal_new ("zoom-invalid",
2989                          G_TYPE_FROM_CLASS (object_class),
2990                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
2991                          G_STRUCT_OFFSET (EvViewClass, zoom_invalid),
2992                          NULL, NULL,
2993                          ev_marshal_VOID__VOID,
2994                          G_TYPE_NONE, 0, G_TYPE_NONE);
2995         signals[SIGNAL_EXTERNAL_LINK] = g_signal_new ("external-link",
2996                          G_TYPE_FROM_CLASS (object_class),
2997                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
2998                          G_STRUCT_OFFSET (EvViewClass, external_link),
2999                          NULL, NULL,
3000                          g_cclosure_marshal_VOID__OBJECT,
3001                          G_TYPE_NONE, 1,
3002                          G_TYPE_OBJECT);
3003         signals[SIGNAL_POPUP_MENU] = g_signal_new ("popup",
3004                          G_TYPE_FROM_CLASS (object_class),
3005                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
3006                          G_STRUCT_OFFSET (EvViewClass, popup_menu),
3007                          NULL, NULL,
3008                          g_cclosure_marshal_VOID__OBJECT,
3009                          G_TYPE_NONE, 1,
3010                          G_TYPE_OBJECT);
3011
3012         g_object_class_install_property (object_class,
3013                                          PROP_STATUS,
3014                                          g_param_spec_string ("status",
3015                                                               "Status Message",
3016                                                               "The status message",
3017                                                               NULL,
3018                                                               G_PARAM_READABLE));
3019
3020         g_object_class_install_property (object_class,
3021                                          PROP_FIND_STATUS,
3022                                          g_param_spec_string ("find-status",
3023                                                               "Find Status Message",
3024                                                               "The find status message",
3025                                                               NULL,
3026                                                               G_PARAM_READABLE));
3027
3028         g_object_class_install_property (object_class,
3029                                          PROP_CONTINUOUS,
3030                                          g_param_spec_boolean ("continuous",
3031                                                                "Continuous",
3032                                                                "Continuous scrolling mode",
3033                                                                TRUE,
3034                                                                G_PARAM_READWRITE));
3035
3036         g_object_class_install_property (object_class,
3037                                          PROP_DUAL_PAGE,
3038                                          g_param_spec_boolean ("dual-page",
3039                                                                "Dual Page",
3040                                                                "Two pages visible at once",
3041                                                                FALSE,
3042                                                                G_PARAM_READWRITE));
3043         g_object_class_install_property (object_class,
3044                                          PROP_FULLSCREEN,
3045                                          g_param_spec_boolean ("fullscreen",
3046                                                                "Full Screen",
3047                                                                "Draw page in a fullscreen fashion",
3048                                                                FALSE,
3049                                                                G_PARAM_READWRITE));
3050         g_object_class_install_property (object_class,
3051                                          PROP_PRESENTATION,
3052                                          g_param_spec_boolean ("presentation",
3053                                                                "Presentation",
3054                                                                "Draw page in presentation mode",
3055                                                                TRUE,
3056                                                                G_PARAM_READWRITE));
3057
3058         g_object_class_install_property (object_class,
3059                                          PROP_SIZING_MODE,
3060                                          g_param_spec_enum ("sizing-mode",
3061                                                             "Sizing Mode",
3062                                                             "Sizing Mode",
3063                                                             EV_TYPE_SIZING_MODE,
3064                                                             EV_SIZING_FIT_WIDTH,
3065                                                             G_PARAM_READWRITE));
3066
3067         g_object_class_install_property (object_class,
3068                                          PROP_ZOOM,
3069                                          g_param_spec_double ("zoom",
3070                                                               "Zoom factor",
3071                                                                "Zoom factor",
3072                                                                MIN_SCALE,
3073                                                                MAX_SCALE,
3074                                                                1.0,
3075                                                                G_PARAM_READWRITE));
3076         g_object_class_install_property (object_class,
3077                                          PROP_ROTATION,
3078                                          g_param_spec_double ("rotation",
3079                                                               "Rotation",
3080                                                                "Rotation",
3081                                                                0,
3082                                                                360,
3083                                                                0,
3084                                                                G_PARAM_READWRITE));
3085         g_object_class_install_property (object_class,
3086                                          PROP_HAS_SELECTION,
3087                                          g_param_spec_boolean ("has-selection",
3088                                                                "Has selection",
3089                                                                "The view has selections",
3090                                                                FALSE,
3091                                                                G_PARAM_READABLE));
3092
3093         binding_set = gtk_binding_set_by_class (class);
3094
3095         add_scroll_binding_keypad (binding_set, GDK_Left,  0, EV_SCROLL_STEP_BACKWARD, TRUE);
3096         add_scroll_binding_keypad (binding_set, GDK_Right, 0, EV_SCROLL_STEP_FORWARD,  TRUE);
3097         add_scroll_binding_keypad (binding_set, GDK_Left,  GDK_MOD1_MASK, EV_SCROLL_STEP_DOWN, TRUE);
3098         add_scroll_binding_keypad (binding_set, GDK_Right, GDK_MOD1_MASK, EV_SCROLL_STEP_UP,  TRUE);
3099         add_scroll_binding_keypad (binding_set, GDK_Up,    0, EV_SCROLL_STEP_BACKWARD, FALSE);
3100         add_scroll_binding_keypad (binding_set, GDK_Down,  0, EV_SCROLL_STEP_FORWARD,  FALSE);
3101         add_scroll_binding_keypad (binding_set, GDK_Up,    GDK_MOD1_MASK, EV_SCROLL_STEP_DOWN, FALSE);
3102         add_scroll_binding_keypad (binding_set, GDK_Down,  GDK_MOD1_MASK, EV_SCROLL_STEP_UP,  FALSE);
3103 }
3104
3105 static void
3106 ev_view_init (EvView *view)
3107 {
3108         GTK_WIDGET_SET_FLAGS (view, GTK_CAN_FOCUS);
3109
3110         view->spacing = 5;
3111         view->scale = 1.0;
3112         view->current_page = 0;
3113         view->pressed_button = -1;
3114         view->cursor = EV_VIEW_CURSOR_NORMAL;
3115         view->drag_info.in_drag = FALSE;
3116         view->selection_info.selections = NULL;
3117         view->selection_info.in_selection = FALSE;
3118         view->selection_info.in_drag = FALSE;
3119         view->selection_mode = EV_VIEW_SELECTION_TEXT;
3120         view->continuous = TRUE;
3121         view->dual_page = FALSE;
3122         view->presentation = FALSE;
3123         view->presentation_state = EV_PRESENTATION_NORMAL;
3124         view->fullscreen = FALSE;
3125         view->sizing_mode = EV_SIZING_FIT_WIDTH;
3126         view->pending_scroll = SCROLL_TO_KEEP_POSITION;
3127         view->jump_to_find_result = TRUE;
3128 }
3129
3130 /*** Callbacks ***/
3131
3132 static void
3133 find_changed_cb (EvDocument *document, int page, EvView *view)
3134 {
3135         double percent;
3136         int n_pages;
3137
3138         percent = ev_document_find_get_progress
3139                         (EV_DOCUMENT_FIND (view->document));
3140         n_pages = ev_page_cache_get_n_pages (view->page_cache);
3141
3142         if (view->jump_to_find_result == TRUE) {
3143                 jump_to_find_page (view, EV_VIEW_FIND_NEXT, 0);
3144                 jump_to_find_result (view);
3145         }
3146         update_find_status_message (view, percent * n_pages >= n_pages - 1 );
3147         if (view->current_page == page)
3148                 gtk_widget_queue_draw (GTK_WIDGET (view));
3149 }
3150
3151 static void
3152 job_finished_cb (EvPixbufCache *pixbuf_cache,
3153                  EvView        *view)
3154 {
3155         gtk_widget_queue_draw (GTK_WIDGET (view));
3156 }
3157
3158 static void
3159 page_changed_cb (EvPageCache *page_cache,
3160                  int          new_page,
3161                  EvView      *view)
3162 {
3163         if (view->current_page != new_page) {
3164                 view->current_page = new_page;
3165                 view->pending_scroll = SCROLL_TO_PAGE_POSITION;
3166                 gtk_widget_queue_resize (GTK_WIDGET (view));
3167         } else {
3168                 gtk_widget_queue_draw (GTK_WIDGET (view));
3169         }
3170
3171         if (EV_IS_DOCUMENT_FIND (view->document)) {
3172                 view->find_result = 0;
3173                 update_find_status_message (view, TRUE);
3174         }
3175 }
3176
3177 static void on_adjustment_value_changed (GtkAdjustment  *adjustment,
3178                                          EvView *view)
3179 {
3180         int dx = 0, dy = 0;
3181
3182         if (! GTK_WIDGET_REALIZED (view))
3183                 return;
3184
3185         if (view->hadjustment) {
3186                 dx = view->scroll_x - (int) view->hadjustment->value;
3187                 view->scroll_x = (int) view->hadjustment->value;
3188         } else {
3189                 view->scroll_x = 0;
3190         }
3191
3192         if (view->vadjustment) {
3193                 dy = view->scroll_y - (int) view->vadjustment->value;
3194                 view->scroll_y = (int) view->vadjustment->value;
3195         } else {
3196                 view->scroll_y = 0;
3197         }
3198
3199
3200         if (view->pending_resize)
3201                 gtk_widget_queue_draw (GTK_WIDGET (view));
3202         else
3203                 gdk_window_scroll (GTK_WIDGET (view)->window, dx, dy);
3204
3205
3206         if (view->document)
3207                 view_update_range_and_current_page (view);
3208 }
3209
3210 GtkWidget*
3211 ev_view_new (void)
3212 {
3213         GtkWidget *view;
3214
3215         view = g_object_new (EV_TYPE_VIEW, NULL);
3216
3217         return view;
3218 }
3219
3220 static void
3221 setup_caches (EvView *view)
3222 {
3223         view->page_cache = ev_page_cache_get (view->document);
3224         g_signal_connect (view->page_cache, "page-changed", G_CALLBACK (page_changed_cb), view);
3225         view->pixbuf_cache = ev_pixbuf_cache_new (GTK_WIDGET (view), view->document);
3226         g_signal_connect (view->pixbuf_cache, "job-finished", G_CALLBACK (job_finished_cb), view);
3227 }
3228
3229 static void
3230 clear_caches (EvView *view)
3231 {
3232         if (view->pixbuf_cache) {
3233                 g_object_unref (view->pixbuf_cache);
3234                 view->pixbuf_cache = NULL;
3235         }
3236
3237         if (view->page_cache) {
3238                 view->page_cache = NULL;
3239         }
3240 }
3241
3242 void
3243 ev_view_set_loading (EvView       *view,
3244                      gboolean      loading)
3245 {
3246         view->loading = loading;
3247         gtk_widget_queue_draw (GTK_WIDGET (view));
3248 }
3249
3250 void
3251 ev_view_set_document (EvView     *view,
3252                       EvDocument *document)
3253 {
3254         g_return_if_fail (EV_IS_VIEW (view));
3255
3256         view->loading = FALSE;
3257
3258         if (document != view->document) {
3259                 clear_caches (view);
3260
3261                 if (view->document) {
3262                         g_signal_handlers_disconnect_by_func (view->document,
3263                                                               find_changed_cb,
3264                                                               view);
3265                         g_object_unref (view->document);
3266                         view->page_cache = NULL;
3267
3268                 }
3269
3270                 view->document = document;
3271                 view->find_result = 0;
3272
3273                 if (view->document) {
3274                         g_object_ref (view->document);
3275                         if (EV_IS_DOCUMENT_FIND (view->document)) {
3276                                 g_signal_connect (view->document,
3277                                                   "find_changed",
3278                                                   G_CALLBACK (find_changed_cb),
3279                                                   view);
3280                         }
3281
3282                         setup_caches (view);
3283                 }
3284
3285                 gtk_widget_queue_resize (GTK_WIDGET (view));
3286         }
3287 }
3288
3289 /*** Zoom and sizing mode ***/
3290
3291 #define EPSILON 0.0000001
3292 void
3293 ev_view_set_zoom (EvView   *view,
3294                   double    factor,
3295                   gboolean  relative)
3296 {
3297         double scale;
3298
3299         if (relative)
3300                 scale = view->scale * factor;
3301         else
3302                 scale = factor;
3303
3304         scale = CLAMP (scale, MIN_SCALE, MAX_SCALE);
3305
3306         if (ABS (view->scale - scale) < EPSILON)
3307                 return;
3308
3309         view->scale = scale;
3310         view->pending_resize = TRUE;
3311
3312         gtk_widget_queue_resize (GTK_WIDGET (view));
3313
3314         g_object_notify (G_OBJECT (view), "zoom");
3315 }
3316
3317 double
3318 ev_view_get_zoom (EvView *view)
3319 {
3320         return view->scale;
3321 }
3322
3323 gboolean
3324 ev_view_get_continuous (EvView *view)
3325 {
3326         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
3327
3328         return view->continuous;
3329 }
3330
3331 void
3332 ev_view_set_continuous (EvView   *view,
3333                         gboolean  continuous)
3334 {
3335         g_return_if_fail (EV_IS_VIEW (view));
3336
3337         continuous = continuous != FALSE;
3338
3339         if (view->continuous != continuous) {
3340                 view->continuous = continuous;
3341                 view->pending_scroll = SCROLL_TO_PAGE_POSITION;
3342                 gtk_widget_queue_resize (GTK_WIDGET (view));
3343         }
3344
3345         g_object_notify (G_OBJECT (view), "continuous");
3346 }
3347
3348 gboolean
3349 ev_view_get_dual_page (EvView *view)
3350 {
3351         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
3352
3353         return view->dual_page;
3354 }
3355
3356 void
3357 ev_view_set_dual_page (EvView   *view,
3358                        gboolean  dual_page)
3359 {
3360         g_return_if_fail (EV_IS_VIEW (view));
3361
3362         dual_page = dual_page != FALSE;
3363
3364         if (view->dual_page == dual_page)
3365                 return;
3366
3367         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
3368         view->dual_page = dual_page;
3369         /* FIXME: if we're keeping the pixbuf cache around, we should extend the
3370          * preload_cache_size to be 2 if dual_page is set.
3371          */
3372         gtk_widget_queue_resize (GTK_WIDGET (view));
3373
3374         g_object_notify (G_OBJECT (view), "dual-page");
3375 }
3376
3377 void
3378 ev_view_set_fullscreen (EvView   *view,
3379                          gboolean  fullscreen)
3380 {
3381         g_return_if_fail (EV_IS_VIEW (view));
3382
3383         fullscreen = fullscreen != FALSE;
3384
3385         if (view->fullscreen == fullscreen)
3386                 return;
3387
3388         view->fullscreen = fullscreen;
3389         gtk_widget_queue_resize (GTK_WIDGET (view));
3390
3391         g_object_notify (G_OBJECT (view), "fullscreen");
3392 }
3393
3394 gboolean
3395 ev_view_get_fullscreen (EvView *view)
3396 {
3397         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
3398
3399         return view->fullscreen;
3400 }
3401
3402 void
3403 ev_view_set_presentation (EvView   *view,
3404                           gboolean  presentation)
3405 {
3406         g_return_if_fail (EV_IS_VIEW (view));
3407
3408         presentation = presentation != FALSE;
3409
3410         if (view->presentation == presentation)
3411                 return;
3412
3413         if (!presentation)
3414                 view->presentation_state = EV_PRESENTATION_NORMAL;
3415
3416         view->presentation = presentation;
3417         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
3418
3419         if (presentation) {
3420                 view->sizing_mode_saved = view->sizing_mode;
3421                 view->scale_saved = view->scale;
3422                 ev_view_set_sizing_mode (view, EV_SIZING_BEST_FIT);
3423         } else {
3424                 ev_view_set_sizing_mode (view, view->sizing_mode_saved);
3425                 ev_view_set_zoom (view, view->scale_saved, FALSE);
3426         }
3427
3428         gtk_widget_queue_resize (GTK_WIDGET (view));
3429
3430         if (GTK_WIDGET_REALIZED (view)) {
3431                 if (view->presentation)
3432                         gdk_window_set_background (GTK_WIDGET(view)->window,
3433                                                    &GTK_WIDGET (view)->style->black);
3434                 else
3435                         gdk_window_set_background (GTK_WIDGET(view)->window,
3436                                                    &GTK_WIDGET (view)->style->mid [GTK_STATE_NORMAL]);
3437         }
3438
3439         g_object_notify (G_OBJECT (view), "presentation");
3440 }
3441
3442 gboolean
3443 ev_view_get_presentation (EvView *view)
3444 {
3445         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
3446
3447         return view->presentation;
3448 }
3449
3450 void
3451 ev_view_set_sizing_mode (EvView       *view,
3452                          EvSizingMode  sizing_mode)
3453 {
3454         g_return_if_fail (EV_IS_VIEW (view));
3455
3456         if (view->sizing_mode == sizing_mode)
3457                 return;
3458
3459         view->sizing_mode = sizing_mode;
3460         gtk_widget_queue_resize (GTK_WIDGET (view));
3461
3462         g_object_notify (G_OBJECT (view), "sizing-mode");
3463 }
3464
3465 EvSizingMode
3466 ev_view_get_sizing_mode (EvView *view)
3467 {
3468         g_return_val_if_fail (EV_IS_VIEW (view), EV_SIZING_FREE);
3469
3470         return view->sizing_mode;
3471 }
3472
3473 gboolean
3474 ev_view_can_zoom_in (EvView *view)
3475 {
3476         return view->scale * ZOOM_IN_FACTOR <= MAX_SCALE;
3477 }
3478
3479 gboolean
3480 ev_view_can_zoom_out (EvView *view)
3481 {
3482         return view->scale * ZOOM_OUT_FACTOR >= MIN_SCALE;
3483 }
3484
3485 void
3486 ev_view_zoom_in (EvView *view)
3487 {
3488         g_return_if_fail (view->sizing_mode == EV_SIZING_FREE);
3489
3490         view->pending_scroll = SCROLL_TO_CENTER;
3491         ev_view_set_zoom (view, ZOOM_IN_FACTOR, TRUE);
3492 }
3493
3494 void
3495 ev_view_zoom_out (EvView *view)
3496 {
3497         g_return_if_fail (view->sizing_mode == EV_SIZING_FREE);
3498
3499         view->pending_scroll = SCROLL_TO_CENTER;
3500         ev_view_set_zoom (view, ZOOM_OUT_FACTOR, TRUE);
3501 }
3502
3503 void
3504 ev_view_rotate_right (EvView *view)
3505 {
3506         int rotation = view->rotation + 90;
3507
3508         if (rotation >= 360) {
3509                 rotation -= 360;
3510         }
3511
3512         ev_view_set_rotation (view, rotation);
3513 }
3514
3515 void
3516 ev_view_rotate_left (EvView *view)
3517 {
3518         int rotation = view->rotation - 90;
3519
3520         if (rotation < 0) {
3521                 rotation += 360;
3522         }
3523
3524         ev_view_set_rotation (view, rotation);
3525 }
3526
3527 void
3528 ev_view_set_rotation (EvView *view, int rotation)
3529 {
3530         view->rotation = rotation;
3531
3532         if (view->pixbuf_cache) {
3533                 ev_pixbuf_cache_clear (view->pixbuf_cache);
3534                 gtk_widget_queue_resize (GTK_WIDGET (view));
3535         }
3536
3537         if (rotation != 0)
3538                 clear_selection (view);
3539
3540         g_object_notify (G_OBJECT (view), "rotation");
3541 }
3542
3543 int
3544 ev_view_get_rotation (EvView *view)
3545 {
3546         return view->rotation;
3547 }
3548
3549 static double
3550 zoom_for_size_fit_width (int doc_width,
3551                          int doc_height,
3552                          int target_width,
3553                          int target_height,
3554                          int vsb_width)
3555 {
3556         double scale;
3557
3558         scale = (double)target_width / doc_width;
3559
3560         if (doc_height * scale > target_height)
3561                 scale = (double) (target_width - vsb_width) / doc_width;
3562
3563         return scale;
3564 }
3565
3566 static double
3567 zoom_for_size_fit_height (int doc_width,
3568                           int doc_height,
3569                           int target_width,
3570                           int target_height,
3571                           int vsb_height)
3572 {
3573         double scale;
3574
3575         scale = (double)target_height / doc_height;
3576
3577         if (doc_width * scale > target_width)
3578                 scale = (double) (target_height - vsb_height) / doc_height;
3579
3580         return scale;
3581 }
3582
3583 static double
3584 zoom_for_size_best_fit (int doc_width,
3585                         int doc_height,
3586                         int target_width,
3587                         int target_height,
3588                         int vsb_width,
3589                         int hsb_width)
3590 {
3591         double w_scale;
3592         double h_scale;
3593
3594         w_scale = (double)target_width / doc_width;
3595         h_scale = (double)target_height / doc_height;
3596
3597         if (doc_height * w_scale > target_height)
3598                 w_scale = (double) (target_width - vsb_width) / doc_width;
3599         if (doc_width * h_scale > target_width)
3600                 h_scale = (double) (target_height - hsb_width) / doc_height;
3601
3602         return MIN (w_scale, h_scale);
3603 }
3604
3605
3606 static void
3607 ev_view_zoom_for_size_presentation (EvView *view,
3608                                     int     width,
3609                                     int     height)
3610 {
3611         int doc_width, doc_height;
3612         gdouble scale;
3613
3614         ev_page_cache_get_size (view->page_cache,
3615                                 view->current_page,
3616                                 view->rotation,
3617                                 1.0,
3618                                 &doc_width,
3619                                 &doc_height);
3620         scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, 0, 0);
3621         ev_view_set_zoom (view, scale, FALSE);
3622 }
3623
3624 static void
3625 ev_view_zoom_for_size_continuous_and_dual_page (EvView *view,
3626                            int     width,
3627                            int     height,
3628                            int     vsb_width,
3629                            int     hsb_height)
3630 {
3631         int doc_width, doc_height;
3632         GtkBorder border;
3633         gdouble scale;
3634
3635         ev_page_cache_get_max_width (view->page_cache,
3636                                      view->rotation,
3637                                      1.0,
3638                                      &doc_width);
3639         ev_page_cache_get_max_height (view->page_cache,
3640                                       view->rotation,
3641                                       1.0,
3642                                       &doc_height);
3643         compute_border (view, doc_width, doc_height, &border);
3644
3645         doc_width = doc_width * 2;
3646         width -= (2 * (border.left + border.right) + 3 * view->spacing);
3647         height -= (border.top + border.bottom + 2 * view->spacing - 1);
3648
3649         /* FIXME: We really need to calculate the overall height here, not the
3650          * page height.  We assume there's always a vertical scrollbar for
3651          * now.  We need to fix this. */
3652         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
3653                 scale = zoom_for_size_fit_width (doc_width, doc_height, width - vsb_width, height, 0);
3654         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
3655                 scale = zoom_for_size_best_fit (doc_width, doc_height, width - vsb_width, height, 0, hsb_height);
3656         else
3657                 g_assert_not_reached ();
3658
3659         ev_view_set_zoom (view, scale, FALSE);
3660 }
3661
3662 static void
3663 ev_view_zoom_for_size_continuous (EvView *view,
3664                                   int     width,
3665                                   int     height,
3666                                   int     vsb_width,
3667                                   int     hsb_height)
3668 {
3669         int doc_width, doc_height;
3670         GtkBorder border;
3671         gdouble scale;
3672
3673         ev_page_cache_get_max_width (view->page_cache,
3674                                      view->rotation,
3675                                      1.0,
3676                                      &doc_width);
3677         ev_page_cache_get_max_height (view->page_cache,
3678                                       view->rotation,
3679                                       1.0,
3680                                       &doc_height);
3681         compute_border (view, doc_width, doc_height, &border);
3682
3683         width -= (border.left + border.right + 2 * view->spacing);
3684         height -= (border.top + border.bottom + 2 * view->spacing - 1);
3685
3686         /* FIXME: We really need to calculate the overall height here, not the
3687          * page height.  We assume there's always a vertical scrollbar for
3688          * now.  We need to fix this. */
3689         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
3690                 scale = zoom_for_size_fit_width (doc_width, doc_height, width - vsb_width, height, 0);
3691         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
3692                 scale = zoom_for_size_best_fit (doc_width, doc_height, width - vsb_width, height, 0, hsb_height);
3693         else
3694                 g_assert_not_reached ();
3695
3696         ev_view_set_zoom (view, scale, FALSE);
3697 }
3698
3699 static void
3700 ev_view_zoom_for_size_dual_page (EvView *view,
3701                                  int     width,
3702                                  int     height,
3703                                  int     vsb_width,
3704                                  int     hsb_height)
3705 {
3706         GtkBorder border;
3707         gint doc_width, doc_height;
3708         gdouble scale;
3709         gint other_page;
3710
3711         other_page = view->current_page ^ 1;
3712
3713         /* Find the largest of the two. */
3714         ev_page_cache_get_size (view->page_cache,
3715                                 view->current_page,
3716                                 view->rotation,
3717                                 1.0,
3718                                 &doc_width, &doc_height);
3719
3720         if (other_page < ev_page_cache_get_n_pages (view->page_cache)) {
3721                 gint width_2, height_2;
3722                 ev_page_cache_get_size (view->page_cache,
3723                                         other_page,
3724                                         view->rotation,
3725                                         1.0,
3726                                         &width_2, &height_2);
3727                 if (width_2 > doc_width)
3728                         doc_width = width_2;
3729                 if (height_2 > doc_height)
3730                         doc_height = height_2;
3731         }
3732         compute_border (view, doc_width, doc_height, &border);
3733
3734         doc_width = doc_width * 2;
3735         width -= ((border.left + border.right)* 2 + 3 * view->spacing);
3736         height -= (border.top + border.bottom + 2 * view->spacing);
3737
3738         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
3739                 scale = zoom_for_size_fit_width (doc_width, doc_height, width, height, vsb_width);
3740         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
3741                 scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, vsb_width, hsb_height);
3742         else
3743                 g_assert_not_reached ();
3744
3745         ev_view_set_zoom (view, scale, FALSE);
3746 }
3747
3748 static void
3749 ev_view_zoom_for_size_single_page (EvView *view,
3750                                    int     width,
3751                                    int     height,
3752                                    int     vsb_width,
3753                                    int     hsb_height)
3754 {
3755         int doc_width, doc_height;
3756         GtkBorder border;
3757         gdouble scale;
3758
3759         ev_page_cache_get_size (view->page_cache,
3760                                 view->current_page,
3761                                 view->rotation,
3762                                 1.0,
3763                                 &doc_width,
3764                                 &doc_height);
3765         /* Get an approximate border */
3766         compute_border (view, width, height, &border);
3767
3768         width -= (border.left + border.right + 2 * view->spacing);
3769         height -= (border.top + border.bottom + 2 * view->spacing);
3770
3771         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
3772                 scale = zoom_for_size_fit_width (doc_width, doc_height, width, height, vsb_width);
3773         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
3774                 scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, vsb_width, hsb_height);
3775         else
3776                 g_assert_not_reached ();
3777
3778         ev_view_set_zoom (view, scale, FALSE);
3779 }
3780
3781 void
3782 ev_view_set_zoom_for_size (EvView *view,
3783                            int     width,
3784                            int     height,
3785                            int     vsb_width,
3786                            int     hsb_height)
3787 {
3788         g_return_if_fail (view->sizing_mode == EV_SIZING_FIT_WIDTH ||
3789                           view->sizing_mode == EV_SIZING_BEST_FIT);
3790         g_return_if_fail (width >= 0);
3791         g_return_if_fail (height >= 0);
3792
3793         if (view->document == NULL)
3794                 return;
3795
3796         if (view->presentation)
3797                 ev_view_zoom_for_size_presentation (view, width, height);
3798         else if (view->continuous && view->dual_page)
3799                 ev_view_zoom_for_size_continuous_and_dual_page (view, width, height, vsb_width, hsb_height);
3800         else if (view->continuous)
3801                 ev_view_zoom_for_size_continuous (view, width, height, vsb_width, hsb_height);
3802         else if (view->dual_page)
3803                 ev_view_zoom_for_size_dual_page (view, width, height, vsb_width, hsb_height);
3804         else
3805                 ev_view_zoom_for_size_single_page (view, width, height, vsb_width, hsb_height);
3806 }
3807
3808 /*** Status text messages ***/
3809
3810 const char *
3811 ev_view_get_status (EvView *view)
3812 {
3813         g_return_val_if_fail (EV_IS_VIEW (view), NULL);
3814
3815         return view->status;
3816 }
3817
3818 static void
3819 ev_view_set_status (EvView *view, const char *message)
3820 {
3821         g_return_if_fail (EV_IS_VIEW (view));
3822
3823         if (message != view->status) {
3824                 g_free (view->status);
3825                 view->status = g_strdup (message);
3826                 g_object_notify (G_OBJECT (view), "status");
3827         }
3828 }
3829
3830 static void
3831 update_find_status_message (EvView *view, gboolean this_page)
3832 {
3833         char *message;
3834
3835         if (this_page) {
3836                 int results;
3837
3838                 results = ev_document_find_get_n_results
3839                                 (EV_DOCUMENT_FIND (view->document),
3840                                  view->current_page);
3841                 /* TRANS: Sometimes this could be better translated as
3842                    "%d hit(s) on this page".  Therefore this string
3843                    contains plural cases. */
3844                 message = g_strdup_printf (ngettext ("%d found on this page",
3845                                                      "%d found on this page",
3846                                                      results),
3847                                            results);
3848         } else {
3849                 double percent;
3850
3851                 percent = ev_document_find_get_progress
3852                                 (EV_DOCUMENT_FIND (view->document));
3853                 message = g_strdup_printf (_("%3d%% remaining to search"),
3854                                            (int) ((1.0 - percent) * 100));
3855
3856         }
3857         ev_view_set_find_status (view, message);
3858         g_free (message);
3859 }
3860
3861 const char *
3862 ev_view_get_find_status (EvView *view)
3863 {
3864         g_return_val_if_fail (EV_IS_VIEW (view), NULL);
3865
3866         return view->find_status;
3867 }
3868
3869 static void
3870 ev_view_set_find_status (EvView *view, const char *message)
3871 {
3872         g_return_if_fail (EV_IS_VIEW (view));
3873
3874         g_free (view->find_status);
3875         view->find_status = g_strdup (message);
3876         g_object_notify (G_OBJECT (view), "find-status");
3877 }
3878
3879 /*** Find ***/
3880
3881 static void
3882 jump_to_find_result (EvView *view)
3883 {
3884         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
3885         EvRectangle rect;
3886         GdkRectangle view_rect;
3887         int n_results;
3888         int page = view->current_page;
3889
3890         n_results = ev_document_find_get_n_results (find, page);
3891
3892         if (n_results > 0  && view->find_result < n_results) {
3893                 ev_document_find_get_result
3894                         (find, page, view->find_result, &rect);
3895
3896                 doc_rect_to_view_rect (view, page, &rect, &view_rect);
3897                 ensure_rectangle_is_visible (view, &view_rect);
3898         }
3899 }
3900
3901 /**
3902  * jump_to_find_page
3903  * @view: #EvView instance
3904  * @direction: Direction to look
3905  * @shift: Shift from current page
3906  *
3907  * Jumps to the first page that has occurences of searched word.
3908  * Uses a direction where to look and a shift from current page.
3909  *
3910  */
3911 static void
3912 jump_to_find_page (EvView *view, EvViewFindDirection direction, gint shift)
3913 {
3914         int n_pages, i;
3915
3916         n_pages = ev_page_cache_get_n_pages (view->page_cache);
3917
3918         for (i = 0; i < n_pages; i++) {
3919                 int has_results;
3920                 int page;
3921
3922                 if (direction == EV_VIEW_FIND_NEXT)
3923                         page = view->current_page + i;
3924                 else
3925                         page = view->current_page - i;
3926                 page += shift;
3927
3928                 if (page >= n_pages) {
3929                         page = page - n_pages;
3930                 }
3931                 if (page < 0)
3932                         page = page + n_pages;
3933
3934                 has_results = ev_document_find_page_has_results
3935                                 (EV_DOCUMENT_FIND (view->document), page);
3936                 if (has_results == -1) {
3937                         break;
3938                 } else if (has_results == 1) {
3939                         ev_page_cache_set_current_page (view->page_cache, page);
3940                         break;
3941                 }
3942         }
3943 }
3944
3945 gboolean
3946 ev_view_can_find_next (EvView *view)
3947 {
3948         if (EV_IS_DOCUMENT_FIND (view->document)) {
3949                 EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
3950                 int i, n_pages;
3951
3952                 n_pages = ev_page_cache_get_n_pages (view->page_cache);
3953                 for (i = 0; i < n_pages; i++) {
3954                         if (ev_document_find_get_n_results (find, i) > 0) {
3955                                 return TRUE;
3956                         }
3957                 }
3958         }
3959
3960         return FALSE;
3961 }
3962
3963 void
3964 ev_view_find_next (EvView *view)
3965 {
3966         int n_results, n_pages;
3967         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
3968
3969         n_results = ev_document_find_get_n_results (find, view->current_page);
3970
3971         n_pages = ev_page_cache_get_n_pages (view->page_cache);
3972
3973         view->find_result++;
3974
3975         if (view->find_result >= n_results) {
3976
3977                 view->find_result = 0;
3978                 jump_to_find_page (view, EV_VIEW_FIND_NEXT, 1);
3979                 jump_to_find_result (view);
3980         } else {
3981                 jump_to_find_result (view);
3982                 gtk_widget_queue_draw (GTK_WIDGET (view));
3983         }
3984 }
3985
3986 gboolean
3987 ev_view_can_find_previous (EvView *view)
3988 {
3989         if (EV_IS_DOCUMENT_FIND (view->document)) {
3990                 EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
3991                 int i, n_pages;
3992
3993                 n_pages = ev_page_cache_get_n_pages (view->page_cache);
3994                 for (i = n_pages - 1; i >= 0; i--) {
3995                         if (ev_document_find_get_n_results (find, i) > 0) {
3996                                 return TRUE;
3997                         }
3998                 }
3999         }
4000
4001         return FALSE;
4002 }
4003 void
4004 ev_view_find_previous (EvView *view)
4005 {
4006         int n_results, n_pages;
4007         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
4008         EvPageCache *page_cache;
4009
4010         page_cache = ev_page_cache_get (view->document);
4011
4012         n_results = ev_document_find_get_n_results (find, view->current_page);
4013
4014         n_pages = ev_page_cache_get_n_pages (page_cache);
4015
4016         view->find_result--;
4017
4018         if (view->find_result < 0) {
4019
4020                 jump_to_find_page (view, EV_VIEW_FIND_PREV, -1);
4021                 view->find_result = ev_document_find_get_n_results (find, view->current_page) - 1;
4022                 jump_to_find_result (view);
4023         } else {
4024                 jump_to_find_result (view);
4025                 gtk_widget_queue_draw (GTK_WIDGET (view));
4026         }
4027 }
4028
4029 void ev_view_search_changed (EvView *view)
4030 {
4031         /* search string has changed, focus on new search result */
4032         view->jump_to_find_result = TRUE;
4033 }
4034
4035 /*** Selections ***/
4036
4037 /* compute_new_selection_rect/text calculates the area currently selected by
4038  * view_rect.  each handles a different mode;
4039  */
4040 static GList *
4041 compute_new_selection_rect (EvView       *view,
4042                             GdkPoint     *start,
4043                             GdkPoint     *stop)
4044 {
4045         GdkRectangle view_rect;
4046         int n_pages, i;
4047         GList *list = NULL;
4048
4049         g_assert (view->selection_mode == EV_VIEW_SELECTION_RECTANGLE);
4050
4051         view_rect.x = MIN (start->x, stop->x);
4052         view_rect.y = MIN (start->y, stop->y);
4053         view_rect.width = MAX (start->x, stop->x) - view_rect.x;
4054         view_rect.width = MAX (start->y, stop->y) - view_rect.y;
4055
4056         n_pages = ev_page_cache_get_n_pages (view->page_cache);
4057
4058         for (i = 0; i < n_pages; i++) {
4059                 GdkRectangle page_area;
4060                 GtkBorder border;
4061
4062                 if (get_page_extents (view, i, &page_area, &border)) {
4063                         GdkRectangle overlap;
4064
4065                         if (gdk_rectangle_intersect (&page_area, &view_rect, &overlap)) {
4066                                 EvViewSelection *selection;
4067
4068                                 selection = g_new0 (EvViewSelection, 1);
4069                                 selection->page = i;
4070                                 view_rect_to_doc_rect (view, &overlap, &page_area,
4071                                                        &(selection->rect));
4072
4073                                 list = g_list_append (list, selection);
4074                         }
4075                 }
4076         }
4077
4078         return list;
4079 }
4080
4081 static gboolean
4082 gdk_rectangle_point_in (GdkRectangle *rectangle,
4083                         GdkPoint     *point)
4084 {
4085         return rectangle->x <= point->x &&
4086                 rectangle->y <= point->y &&
4087                 point->x < rectangle->x + rectangle->width &&
4088                 point->y < rectangle->y + rectangle->height;
4089 }
4090
4091 static GList *
4092 compute_new_selection_text (EvView   *view,
4093                             GdkPoint *start,
4094                             GdkPoint *stop)
4095 {
4096         int n_pages, i, first, last;
4097         GList *list = NULL;
4098         EvViewSelection *selection;
4099         gint width, height;
4100         int start_page, end_page;
4101
4102         g_assert (view->selection_mode == EV_VIEW_SELECTION_TEXT);
4103
4104         n_pages = ev_page_cache_get_n_pages (view->page_cache);
4105
4106         /* First figure out the range of pages the selection
4107          * affects. */
4108         first = n_pages;
4109         last = 0;
4110         if (view->continuous) {
4111                 start_page = 0;
4112                 end_page = n_pages;
4113         } else if (view->dual_page) {
4114                 start_page = view->start_page;
4115                 end_page = view->end_page + 1;
4116         } else {
4117                 start_page = view->current_page;
4118                 end_page = view->current_page + 1;
4119         }
4120
4121         for (i = start_page; i < end_page; i++) {
4122                 GdkRectangle page_area;
4123                 GtkBorder border;
4124
4125                 get_page_extents (view, i, &page_area, &border);
4126                 if (gdk_rectangle_point_in (&page_area, start) ||
4127                     gdk_rectangle_point_in (&page_area, stop)) {
4128                         if (first == n_pages)
4129                                 first = i;
4130                         last = i;
4131                 }
4132
4133         }
4134
4135
4136
4137         /* Now create a list of EvViewSelection's for the affected
4138          * pages.  This could be an empty list, a list of just one
4139          * page or a number of pages.*/
4140         for (i = first; i < last + 1; i++) {
4141                 GdkRectangle page_area;
4142                 GtkBorder border;
4143                 GdkPoint *point;
4144
4145                 ev_page_cache_get_size (view->page_cache, i,
4146                                         view->rotation,
4147                                         1.0, &width, &height);
4148
4149                 selection = g_new0 (EvViewSelection, 1);
4150                 selection->page = i;
4151                 selection->rect.x1 = selection->rect.y1 = 0;
4152                 selection->rect.x2 = width;
4153                 selection->rect.y2 = height;
4154
4155                 get_page_extents (view, i, &page_area, &border);
4156
4157                 if (gdk_rectangle_point_in (&page_area, start))
4158                         point = start;
4159                 else
4160                         point = stop;
4161
4162                 if (i == first)
4163                         view_point_to_doc_point (view, point, &page_area,
4164                                                  &selection->rect.x1,
4165                                                  &selection->rect.y1);
4166
4167                 /* If the selection is contained within just one page,
4168                  * make sure we don't write 'start' into both points
4169                  * in selection->rect. */
4170                 if (first == last)
4171                         point = stop;
4172
4173                 if (i == last)
4174                         view_point_to_doc_point (view, point, &page_area,
4175                                                  &selection->rect.x2,
4176                                                  &selection->rect.y2);
4177
4178                 list = g_list_append (list, selection);
4179         }
4180
4181         return list;
4182 }
4183
4184 /* This function takes the newly calculated list, and figures out which regions
4185  * have changed.  It then queues a redraw approporiately.
4186  */
4187 static void
4188 merge_selection_region (EvView *view,
4189                         GList  *new_list)
4190 {
4191         GList *old_list;
4192         GList *new_list_ptr, *old_list_ptr;
4193
4194         /* Update the selection */
4195         old_list = ev_pixbuf_cache_get_selection_list (view->pixbuf_cache);
4196         g_list_foreach (view->selection_info.selections, (GFunc)selection_free, NULL);
4197         view->selection_info.selections = new_list;
4198         ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, new_list);
4199         g_object_notify (G_OBJECT (view), "has-selection");
4200
4201         new_list_ptr = new_list;
4202         old_list_ptr = old_list;
4203
4204         while (new_list_ptr || old_list_ptr) {
4205                 EvViewSelection *old_sel, *new_sel;
4206                 int cur_page;
4207                 GdkRegion *region = NULL;
4208
4209                 new_sel = (new_list_ptr) ? (new_list_ptr->data) : NULL;
4210                 old_sel = (old_list_ptr) ? (old_list_ptr->data) : NULL;
4211
4212                 /* Assume that the lists are in order, and we run through them
4213                  * comparing them, one page at a time.  We come out with the
4214                  * first page we see. */
4215                 if (new_sel && old_sel) {
4216                         if (new_sel->page < old_sel->page) {
4217                                 new_list_ptr = new_list_ptr->next;
4218                                 old_sel = NULL;
4219                         } else if (new_sel->page > old_sel->page) {
4220                                 old_list_ptr = old_list_ptr->next;
4221                                 new_sel = NULL;
4222                         } else {
4223                                 new_list_ptr = new_list_ptr->next;
4224                                 old_list_ptr = old_list_ptr->next;
4225                         }
4226                 } else if (new_sel) {
4227                         new_list_ptr = new_list_ptr->next;
4228                 } else if (old_sel) {
4229                         old_list_ptr = old_list_ptr->next;
4230                 }
4231
4232                 g_assert (new_sel || old_sel);
4233
4234                 /* is the page we're looking at on the screen?*/
4235                 cur_page = new_sel ? new_sel->page : old_sel->page;
4236                 if (cur_page < view->start_page || cur_page > view->end_page)
4237                         continue;
4238
4239                 /* seed the cache with a new page.  We are going to need the new
4240                  * region too. */
4241                 if (new_sel) {
4242                         GdkRegion *tmp_region = NULL;
4243                         ev_pixbuf_cache_get_selection_pixbuf (view->pixbuf_cache,
4244                                                               cur_page,
4245                                                               view->scale,
4246                                                               &tmp_region);
4247                         if (tmp_region) {
4248                                 new_sel->covered_region = gdk_region_copy (tmp_region);
4249                         }
4250                 }
4251
4252                 /* Now we figure out what needs redrawing */
4253                 if (old_sel && new_sel) {
4254                         if (old_sel->covered_region &&
4255                             new_sel->covered_region) {
4256                                 /* We only want to redraw the areas that have
4257                                  * changed, so we xor the old and new regions
4258                                  * and redraw if it's different */
4259                                 region = gdk_region_copy (old_sel->covered_region);
4260                                 gdk_region_xor (region, new_sel->covered_region);
4261                                 if (gdk_region_empty (region)) {
4262                                         gdk_region_destroy (region);
4263                                         region = NULL;
4264                                 }
4265                         } else if (old_sel->covered_region) {
4266                                 region = gdk_region_copy (old_sel->covered_region);
4267                         } else if (new_sel->covered_region) {
4268                                 region = gdk_region_copy (new_sel->covered_region);
4269                         }
4270                 } else if (old_sel && !new_sel) {
4271                         if (old_sel->covered_region && !gdk_region_empty (old_sel->covered_region)) {
4272                                 region = gdk_region_copy (old_sel->covered_region);
4273                         }
4274                 } else if (!old_sel && new_sel) {
4275                         if (new_sel->covered_region && !gdk_region_empty (new_sel->covered_region)) {
4276                                 region = gdk_region_copy (new_sel->covered_region);
4277                         }
4278                 } else {
4279                         g_assert_not_reached ();
4280                 }
4281
4282                 /* Redraw the damaged region! */
4283                 if (region) {
4284                         GdkRectangle page_area;
4285                         GtkBorder border;
4286
4287                         get_page_extents (view, cur_page, &page_area, &border);
4288                         gdk_region_offset (region,
4289                                            page_area.x + border.left - view->scroll_x,
4290                                            page_area.y + border.top - view->scroll_y);
4291                         gdk_window_invalidate_region (GTK_WIDGET (view)->window, region, TRUE);
4292                         gdk_region_destroy (region);
4293                 }
4294         }
4295
4296         /* Free the old list, now that we're done with it. */
4297         g_list_foreach (old_list, (GFunc) selection_free, NULL);
4298 }
4299
4300 static void
4301 compute_selections (EvView   *view,
4302                     GdkPoint *start,
4303                     GdkPoint *stop)
4304 {
4305         GList *list;
4306
4307         if (view->selection_mode == EV_VIEW_SELECTION_RECTANGLE)
4308                 list = compute_new_selection_rect (view, start, stop);
4309         else
4310                 list = compute_new_selection_text (view, start, stop);
4311         merge_selection_region (view, list);
4312 }
4313
4314 /* Free's the selection.  It's up to the caller to queue redraws if needed.
4315  */
4316 static void
4317 selection_free (EvViewSelection *selection)
4318 {
4319         if (selection->covered_region)
4320                 gdk_region_destroy (selection->covered_region);
4321         g_free (selection);
4322 }
4323
4324 static void
4325 clear_selection (EvView *view)
4326 {
4327         g_list_foreach (view->selection_info.selections, (GFunc)selection_free, NULL);
4328         view->selection_info.selections = NULL;
4329         view->selection_info.in_selection = FALSE;
4330         g_object_notify (G_OBJECT (view), "has-selection");
4331 }
4332
4333
4334 void
4335 ev_view_select_all (EvView *view)
4336 {
4337         int n_pages, i;
4338
4339         /* Disable selection on rotated pages for the 0.4.0 series */
4340         if (view->rotation != 0)
4341                 return;
4342
4343         clear_selection (view);
4344
4345         n_pages = ev_page_cache_get_n_pages (view->page_cache);
4346         for (i = 0; i < n_pages; i++) {
4347                 int width, height;
4348                 EvViewSelection *selection;
4349
4350                 ev_page_cache_get_size (view->page_cache,
4351                                         i,
4352                                         view->rotation,
4353                                         1.0, &width, &height);
4354
4355                 selection = g_new0 (EvViewSelection, 1);
4356                 selection->page = i;
4357                 selection->rect.x1 = selection->rect.y1 = 0;
4358                 selection->rect.x2 = width;
4359                 selection->rect.y2 = height;
4360
4361                 view->selection_info.selections = g_list_append (view->selection_info.selections, selection);
4362         }
4363
4364         ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, view->selection_info.selections);
4365         g_object_notify (G_OBJECT (view), "has-selection");
4366         gtk_widget_queue_draw (GTK_WIDGET (view));
4367 }
4368
4369 gboolean
4370 ev_view_get_has_selection (EvView *view)
4371 {
4372         return view->selection_info.selections != NULL;
4373 }
4374
4375 static char *
4376 get_selected_text (EvView *ev_view)
4377 {
4378         GString *text;
4379         GList *l;
4380
4381         text = g_string_new (NULL);
4382
4383         ev_document_doc_mutex_lock ();
4384
4385         for (l = ev_view->selection_info.selections; l != NULL; l = l->next) {
4386                 EvViewSelection *selection = (EvViewSelection *)l->data;
4387                 char *tmp;
4388
4389                 tmp = ev_document_get_text (ev_view->document,
4390                                             selection->page,
4391                                             &selection->rect);
4392                 g_string_append (text, tmp);
4393                 g_free (tmp);
4394         }
4395
4396         ev_document_doc_mutex_unlock ();
4397
4398         return g_string_free (text, FALSE);
4399 }
4400
4401 void
4402 ev_view_copy (EvView *ev_view)
4403 {
4404         GtkClipboard *clipboard;
4405         char *text;
4406
4407         if (!ev_document_can_get_text (ev_view->document)) {
4408                 return;
4409         }
4410
4411         text = get_selected_text (ev_view);
4412         clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view),
4413                                               GDK_SELECTION_CLIPBOARD);
4414         gtk_clipboard_set_text (clipboard, text, -1);
4415         g_free (text);
4416 }
4417
4418 static void
4419 ev_view_primary_get_cb (GtkClipboard     *clipboard,
4420                         GtkSelectionData *selection_data,
4421                         guint             info,
4422                         gpointer          data)
4423 {
4424         EvView *ev_view = EV_VIEW (data);
4425         char *text;
4426
4427         if (!ev_document_can_get_text (ev_view->document)) {
4428                 return;
4429         }
4430
4431         text = get_selected_text (ev_view);
4432         gtk_selection_data_set_text (selection_data, text, -1);
4433         g_free (text);
4434 }
4435
4436 static void
4437 ev_view_primary_clear_cb (GtkClipboard *clipboard,
4438                           gpointer      data)
4439 {
4440         EvView *view = EV_VIEW (data);
4441
4442         clear_selection (view);
4443 }
4444
4445 static void
4446 ev_view_update_primary_selection (EvView *ev_view)
4447 {
4448         GtkClipboard *clipboard;
4449
4450         clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view),
4451                                               GDK_SELECTION_PRIMARY);
4452
4453         if (ev_view->selection_info.selections) {
4454                 if (!gtk_clipboard_set_with_owner (clipboard,
4455                                                    targets,
4456                                                    G_N_ELEMENTS (targets),
4457                                                    ev_view_primary_get_cb,
4458                                                    ev_view_primary_clear_cb,
4459                                                    G_OBJECT (ev_view)))
4460                         ev_view_primary_clear_cb (clipboard, ev_view);
4461         } else {
4462                 if (gtk_clipboard_get_owner (clipboard) == G_OBJECT (ev_view))
4463                         gtk_clipboard_clear (clipboard);
4464         }
4465 }
4466
4467 /*** Cursor operations ***/
4468
4469 static GdkCursor *
4470 ev_view_create_invisible_cursor(void)
4471 {
4472        GdkBitmap *empty;
4473        GdkColor black = { 0, 0, 0, 0 };
4474        static char bits[] = { 0x00 };
4475
4476        empty = gdk_bitmap_create_from_data (NULL, bits, 1, 1);
4477
4478        return gdk_cursor_new_from_pixmap (empty, empty, &black, &black, 0, 0);
4479 }
4480
4481 static void
4482 ev_view_set_cursor (EvView *view, EvViewCursor new_cursor)
4483 {
4484         GdkCursor *cursor = NULL;
4485         GdkDisplay *display;
4486         GtkWidget *widget;
4487
4488         if (view->cursor == new_cursor) {
4489                 return;
4490         }
4491
4492         widget = gtk_widget_get_toplevel (GTK_WIDGET (view));
4493         display = gtk_widget_get_display (widget);
4494         view->cursor = new_cursor;
4495
4496         switch (new_cursor) {
4497                 case EV_VIEW_CURSOR_NORMAL:
4498                         gdk_window_set_cursor (widget->window, NULL);
4499                         break;
4500                 case EV_VIEW_CURSOR_IBEAM:
4501                         cursor = gdk_cursor_new_for_display (display, GDK_XTERM);
4502                         break;
4503                 case EV_VIEW_CURSOR_LINK:
4504                         cursor = gdk_cursor_new_for_display (display, GDK_HAND2);
4505                         break;
4506                 case EV_VIEW_CURSOR_WAIT:
4507                         cursor = gdk_cursor_new_for_display (display, GDK_WATCH);
4508                         break;
4509                 case EV_VIEW_CURSOR_HIDDEN:
4510                         cursor = ev_view_create_invisible_cursor ();
4511                         break;
4512                 case EV_VIEW_CURSOR_DRAG:
4513                         cursor = gdk_cursor_new_for_display (display, GDK_FLEUR);
4514                         break;
4515         }
4516
4517         if (cursor) {
4518                 gdk_window_set_cursor (widget->window, cursor);
4519                 gdk_cursor_unref (cursor);
4520                 gdk_flush();
4521         }
4522 }
4523
4524 void
4525 ev_view_hide_cursor (EvView *view)
4526 {
4527        ev_view_set_cursor (view, EV_VIEW_CURSOR_HIDDEN);
4528 }
4529
4530 void
4531 ev_view_show_cursor (EvView *view)
4532 {
4533        ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
4534 }
4535
4536 static void
4537 ev_view_reset_presentation_state (EvView *view)
4538 {
4539         if (!view->presentation ||
4540             view->presentation_state == EV_PRESENTATION_NORMAL)
4541                 return;
4542
4543         view->presentation_state = EV_PRESENTATION_NORMAL;
4544         gdk_window_set_background (GTK_WIDGET (view)->window,
4545                                    &GTK_WIDGET (view)->style->black);
4546         gtk_widget_queue_draw (GTK_WIDGET (view));
4547 }
4548
4549 gboolean
4550 ev_view_next_page (EvView *view)
4551 {
4552         int page, n_pages;
4553
4554         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
4555
4556         if (!view->page_cache)
4557                 return FALSE;
4558
4559         ev_view_reset_presentation_state (view);
4560
4561         page = ev_page_cache_get_current_page (view->page_cache);
4562         n_pages = ev_page_cache_get_n_pages (view->page_cache);
4563
4564         if (view->dual_page && !view->presentation)
4565                 page = page + 2;
4566         else
4567                 page = page + 1;
4568
4569         if (page < n_pages) {
4570                 ev_page_cache_set_current_page (view->page_cache, page);
4571                 return TRUE;
4572         } else if (view->presentation && page == n_pages) {
4573                 view->presentation_state = EV_PRESENTATION_END;
4574                 gtk_widget_queue_draw (GTK_WIDGET (view));
4575                 return TRUE;
4576         } else if (view->dual_page && page == n_pages) {
4577                 ev_page_cache_set_current_page (view->page_cache, page - 1);
4578                 return TRUE;
4579         } else {
4580                 return FALSE;
4581         }
4582 }
4583
4584 gboolean
4585 ev_view_previous_page (EvView *view)
4586 {
4587         int page;
4588
4589         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
4590
4591         if (!view->page_cache)
4592                 return FALSE;
4593
4594         if (view->presentation &&
4595             view->presentation_state == EV_PRESENTATION_END) {
4596                 ev_view_reset_presentation_state (view);
4597                 return TRUE;
4598         }
4599
4600         ev_view_reset_presentation_state (view);
4601
4602         page = ev_page_cache_get_current_page (view->page_cache);
4603
4604         if (view->dual_page && !view->presentation)
4605                 page = page - 2;
4606         else
4607                 page = page - 1;
4608
4609         if (page >= 0) {
4610                 ev_page_cache_set_current_page (view->page_cache, page);
4611                 return TRUE;
4612         } else if (ev_view_get_dual_page (view) && page == -1) {
4613                 ev_page_cache_set_current_page (view->page_cache, 0);
4614                 return TRUE;
4615         } else {
4616                 return FALSE;
4617         }
4618 }
4619
4620 /*** Enum description for usage in signal ***/
4621
4622 GType
4623 ev_sizing_mode_get_type (void)
4624 {
4625   static GType etype = 0;
4626   if (etype == 0) {
4627     static const GEnumValue values[] = {
4628       { EV_SIZING_FIT_WIDTH, "EV_SIZING_FIT_WIDTH", "fit-width" },
4629       { EV_SIZING_BEST_FIT, "EV_SIZING_BEST_FIT", "best-fit" },
4630       { EV_SIZING_FREE, "EV_SIZING_FREE", "free" },
4631       { 0, NULL, NULL }
4632     };
4633     etype = g_enum_register_static ("EvSizingMode", values);
4634   }
4635   return etype;
4636 }
4637
4638 GType
4639 ev_scroll_type_get_type (void)
4640 {
4641   static GType etype = 0;
4642   if (etype == 0) {
4643     static const GEnumValue values[] = {
4644       { EV_SCROLL_PAGE_FORWARD, "EV_SCROLL_PAGE_FORWARD", "scroll-page-forward" },
4645       { EV_SCROLL_PAGE_BACKWARD, "EV_SCROLL_PAGE_BACKWARD", "scroll-page-backward" },
4646       { EV_SCROLL_STEP_FORWARD, "EV_SCROLL_STEP_FORWARD", "scroll-step-forward" },
4647       { EV_SCROLL_STEP_FORWARD, "EV_SCROLL_STEP_FORWARD", "scroll-step-forward" },
4648       { EV_SCROLL_STEP_UP, "EV_SCROLL_STEP_UP", "scroll-step-up" },
4649       { EV_SCROLL_STEP_DOWN, "EV_SCROLL_STEP_DOWN", "scroll-step-down" },
4650       { 0, NULL, NULL }
4651     };
4652     etype = g_enum_register_static ("EvScrollType", values);
4653   }
4654   return etype;
4655 }