shell/ev-view.c

   1 /* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8; c-indent-level: 8 -*- */
   2 /* this file is part of evince, a gnome document viewer
   3  *
   4  *  Copyright (C) 2004 Red Hat, Inc
   5  *
   6  * Evince is free software; you can redistribute it and/or modify it
   7  * under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * Evince is distributed in the hope that it will be useful, but
  12  * WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
  19  */
  20
  21 #include <math.h>
  22 #include <string.h>
  23 #include <gtk/gtkalignment.h>
  24 #include <glib/gi18n.h>
  25 #include <gtk/gtkbindings.h>
  26 #include <gtk/gtkselection.h>
  27 #include <gtk/gtkclipboard.h>
  28 #include <gdk/gdkkeysyms.h>
  29 #include <libgnomevfs/gnome-vfs-utils.h>
  30
  31 #include "ev-marshal.h"
  32 #include "ev-view.h"
  33 #include "ev-view-private.h"
  34 #include "ev-utils.h"
  35 #include "ev-selection.h"
  36 #include "ev-document-links.h"
  37 #include "ev-document-find.h"
  38 #include "ev-document-misc.h"
  39 #include "ev-debug.h"
  40 #include "ev-job-queue.h"
  41 #include "ev-page-cache.h"
  42 #include "ev-pixbuf-cache.h"
  43 #include "ev-tooltip.h"
  44
  45 #define EV_VIEW_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass), EV_TYPE_VIEW, EvViewClass))
  46 #define EV_IS_VIEW_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), EV_TYPE_VIEW))
  47 #define EV_VIEW_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj), EV_TYPE_VIEW, EvViewClass))
  48
  49
  50 enum {
  51         PROP_0,
  52         PROP_STATUS,
  53         PROP_FIND_STATUS,
  54         PROP_CONTINUOUS,
  55         PROP_DUAL_PAGE,
  56         PROP_FULLSCREEN,
  57         PROP_PRESENTATION,
  58         PROP_SIZING_MODE,
  59         PROP_ZOOM,
  60         PROP_ROTATION,
  61         PROP_HAS_SELECTION,
  62 };
  63
  64 enum {
  65         SIGNAL_BINDING_ACTIVATED,
  66         SIGNAL_ZOOM_INVALID,
  67         SIGNAL_EXTERNAL_LINK,
  68         SIGNAL_POPUP_MENU,
  69         N_SIGNALS,
  70 };
  71
  72 enum {
  73         TARGET_STRING,
  74         TARGET_TEXT,
  75         TARGET_COMPOUND_TEXT,
  76         TARGET_UTF8_STRING,
  77         TARGET_TEXT_BUFFER_CONTENTS
  78 };
  79
  80 static const GtkTargetEntry targets[] = {
  81         { "STRING", 0, TARGET_STRING },
  82         { "TEXT",   0, TARGET_TEXT },
  83         { "COMPOUND_TEXT", 0, TARGET_COMPOUND_TEXT },
  84         { "UTF8_STRING", 0, TARGET_UTF8_STRING },
  85 };
  86
  87 static guint signals[N_SIGNALS];
  88
  89 typedef enum {
  90         EV_VIEW_FIND_NEXT,
  91         EV_VIEW_FIND_PREV
  92 } EvViewFindDirection;
  93
  94 #define ZOOM_IN_FACTOR  1.2
  95 #define ZOOM_OUT_FACTOR (1.0/ZOOM_IN_FACTOR)
  96
  97 #define MIN_SCALE 0.05409
  98 #define MAX_SCALE 4.0
  99
 100 #define SCROLL_TIME 150
 101
 102 /*** Scrolling ***/
 103 static void       scroll_to_current_page                     (EvView *view,
 104                                                               GtkOrientation orientation);
 105 static void       ev_view_set_scroll_adjustments             (EvView             *view,
 106                                                               GtkAdjustment      *hadjustment,
 107                                                               GtkAdjustment      *vadjustment);
 108 static void       view_update_range_and_current_page         (EvView             *view);
 109 static void       set_scroll_adjustment                      (EvView             *view,
 110                                                               GtkOrientation      orientation,
 111                                                               GtkAdjustment      *adjustment);
 112 static void       ev_view_set_scroll_adjustments             (EvView             *view,
 113                                                               GtkAdjustment      *hadjustment,
 114                                                               GtkAdjustment      *vadjustment);
 115 static void       add_scroll_binding_keypad                  (GtkBindingSet      *binding_set,
 116                                                               guint               keyval,
 117                                                               GdkModifierType modifiers,
 118                                                               EvScrollType       scroll,
 119                                                               gboolean            horizontal);
 120 static void       ensure_rectangle_is_visible                (EvView             *view,
 121                                                               GdkRectangle       *rect);
 122
 123 /*** Geometry computations ***/
 124 static void       compute_border                             (EvView             *view,
 125                                                               int                 width,
 126                                                               int                 height,
 127                                                               GtkBorder          *border);
 128 static void       get_page_y_offset                          (EvView *view,
 129                                                               int page,
 130                                                               double zoom,
 131                                                               int *y_offset);
 132 static gboolean   get_page_extents                           (EvView             *view,
 133                                                               gint                page,
 134                                                               GdkRectangle       *page_area,
 135                                                               GtkBorder          *border);
 136 static void       view_rect_to_doc_rect                      (EvView             *view,
 137                                                               GdkRectangle       *view_rect,
 138                                                               GdkRectangle       *page_area,
 139                                                               EvRectangle        *doc_rect);
 140 static void       doc_rect_to_view_rect                      (EvView             *view,
 141                                                               int                 page,
 142                                                               EvRectangle        *doc_rect,
 143                                                               GdkRectangle       *view_rect);
 144 static void       find_page_at_location                      (EvView             *view,
 145                                                               gdouble             x,
 146                                                               gdouble             y,
 147                                                               gint               *page,
 148                                                               gint               *x_offset,
 149                                                               gint               *y_offset);
 150 static gboolean  doc_point_to_view_point                     (EvView       *view,
 151                                                               int           page,
 152                                                               EvPoint      *doc_point,
 153                                                               GdkPoint     *view_point);
 154 /*** Hyperrefs ***/
 155 static EvLink *   ev_view_get_link_at_location               (EvView  *view,
 156                                                               gdouble  x,
 157                                                               gdouble  y);
 158 static char*      tip_from_link                              (EvView             *view,
 159                                                               EvLink             *link);
 160 static void       handle_link_over_xy                        (EvView *view,
 161                                                               gint x,
 162                                                               gint y);
 163 /*** GtkWidget implementation ***/
 164 static void       ev_view_size_request_continuous_dual_page  (EvView             *view,
 165                                                               GtkRequisition     *requisition);
 166 static void       ev_view_size_request_continuous            (EvView             *view,
 167                                                               GtkRequisition     *requisition);
 168 static void       ev_view_size_request_dual_page             (EvView             *view,
 169                                                               GtkRequisition     *requisition);
 170 static void       ev_view_size_request_single_page           (EvView             *view,
 171                                                               GtkRequisition     *requisition);
 172 static void       ev_view_size_request                       (GtkWidget          *widget,
 173                                                               GtkRequisition     *requisition);
 174 static void       ev_view_size_allocate                      (GtkWidget          *widget,
 175                                                               GtkAllocation      *allocation);
 176 static void       ev_view_realize                            (GtkWidget          *widget);
 177 static gboolean   ev_view_scroll_event                       (GtkWidget          *widget,
 178                                                               GdkEventScroll     *event);
 179 static gboolean   ev_view_expose_event                       (GtkWidget          *widget,
 180                                                               GdkEventExpose     *event);
 181 static gboolean   ev_view_popup_menu                         (GtkWidget          *widget);
 182 static gboolean   ev_view_button_press_event                 (GtkWidget          *widget,
 183                                                               GdkEventButton     *event);
 184 static gboolean   ev_view_motion_notify_event                (GtkWidget          *widget,
 185                                                               GdkEventMotion     *event);
 186 static gboolean   ev_view_button_release_event               (GtkWidget          *widget,
 187                                                               GdkEventButton     *event);
 188 static gboolean   ev_view_enter_notify_event                 (GtkWidget          *widget,
 189                                                               GdkEventCrossing   *event);
 190 static gboolean   ev_view_leave_notify_event                 (GtkWidget          *widget,
 191                                                               GdkEventCrossing   *event);
 192 static void       ev_view_style_set                          (GtkWidget          *widget,
 193                                                               GtkStyle           *old_style);
 194
 195 static AtkObject *ev_view_get_accessible                     (GtkWidget *widget);
 196
 197 /*** Drawing ***/
 198 static guint32    ev_gdk_color_to_rgb                        (const GdkColor     *color);
 199 static void       draw_rubberband                            (GtkWidget          *widget,
 200                                                               GdkWindow          *window,
 201                                                               const GdkRectangle *rect,
 202                                                               guchar              alpha);
 203 static void       highlight_find_results                     (EvView             *view,
 204                                                               int                 page);
 205 static void       draw_one_page                              (EvView             *view,
 206                                                               gint                page,
 207                                                               GdkRectangle       *page_area,
 208                                                               GtkBorder          *border,
 209                                                               GdkRectangle       *expose_area);
 210 static void       draw_loading_text                          (EvView             *view,
 211                                                               GdkRectangle       *page_area,
 212                                                               GdkRectangle       *expose_area);
 213
 214 /*** Callbacks ***/
 215 static void       find_changed_cb                            (EvDocument         *document,
 216                                                               int                 page,
 217                                                               EvView             *view);
 218 static void       job_finished_cb                            (EvPixbufCache      *pixbuf_cache,
 219                                                               EvView             *view);
 220 static void       page_changed_cb                            (EvPageCache        *page_cache,
 221                                                               int                 new_page,
 222                                                               EvView             *view);
 223 static void       on_adjustment_value_changed                (GtkAdjustment      *adjustment,
 224                                                               EvView             *view);
 225
 226 /*** GObject ***/
 227 static void       ev_view_finalize                           (GObject            *object);
 228 static void       ev_view_destroy                            (GtkObject          *object);
 229 static void       ev_view_set_property                       (GObject            *object,
 230                                                               guint               prop_id,
 231                                                               const GValue       *value,
 232                                                               GParamSpec         *pspec);
 233 static void       ev_view_get_property                       (GObject            *object,
 234                                                               guint               prop_id,
 235                                                               GValue             *value,
 236                                                               GParamSpec         *pspec);
 237 static void       ev_view_class_init                         (EvViewClass        *class);
 238 static void       ev_view_init                               (EvView             *view);
 239
 240 /*** Zoom and sizing ***/
 241 static double   zoom_for_size_fit_width                      (int doc_width,
 242                                                               int doc_height,
 243                                                               int target_width,
 244                                                               int target_height,
 245                                                               int vsb_width);
 246 static double   zoom_for_size_fit_height                     (int doc_width,
 247                                                               int doc_height,
 248                                                               int target_width,
 249                                                               int target_height,
 250                                                               int vsb_height);
 251 static double   zoom_for_size_best_fit                       (int doc_width,
 252                                                               int doc_height,
 253                                                               int target_width,
 254                                                               int target_height,
 255                                                               int vsb_width,
 256                                                               int hsb_width);
 257 static void     ev_view_zoom_for_size_presentation           (EvView *view,
 258                                                               int     width,
 259                                                               int     height);
 260 static void     ev_view_zoom_for_size_continuous_and_dual_page (EvView *view,
 261                                                                 int     width,
 262                                                                 int     height,
 263                                                                 int     vsb_width,
 264                                                                 int     hsb_height);
 265 static void     ev_view_zoom_for_size_continuous               (EvView *view,
 266                                                                 int     width,
 267                                                                 int     height,
 268                                                                 int     vsb_width,
 269                                                                 int     hsb_height);
 270 static void     ev_view_zoom_for_size_dual_page                (EvView *view,
 271                                                                 int     width,
 272                                                                 int     height,
 273                                                                 int     vsb_width,
 274                                                                 int     hsb_height);
 275 static void     ev_view_zoom_for_size_single_page              (EvView *view,
 276                                                                 int     width,
 277                                                                 int     height,
 278                                                                 int     vsb_width,
 279                                                                 int     hsb_height);
 280 /*** Cursors ***/
 281 static GdkCursor* ev_view_create_invisible_cursor            (void);
 282 static void       ev_view_set_cursor                         (EvView             *view,
 283                                                               EvViewCursor        new_cursor);
 284
 285 /*** Status messages ***/
 286 static void       ev_view_set_status                         (EvView             *view,
 287                                                               const char         *message);
 288 static void       update_find_status_message                 (EvView             *view,
 289                                                               gboolean            this_page);
 290 static void       ev_view_set_find_status                    (EvView             *view,
 291                                                               const char         *message);
 292 /*** Find ***/
 293 static void       jump_to_find_result                        (EvView             *view);
 294 static void       jump_to_find_page                          (EvView             *view,
 295                                                               EvViewFindDirection direction,
 296                                                               gint                shift);
 297
 298 /*** Selection ***/
 299 static void       compute_selections                         (EvView             *view,
 300                                                               GdkPoint           *start,
 301                                                               GdkPoint           *stop);
 302 static void       clear_selection                            (EvView             *view);
 303 static void       selection_free                             (EvViewSelection    *selection);
 304 static char*      get_selected_text                          (EvView             *ev_view);
 305 static void       ev_view_primary_get_cb                     (GtkClipboard       *clipboard,
 306                                                               GtkSelectionData   *selection_data,
 307                                                               guint               info,
 308                                                               gpointer            data);
 309 static void       ev_view_primary_clear_cb                   (GtkClipboard       *clipboard,
 310                                                               gpointer            data);
 311 static void       ev_view_update_primary_selection           (EvView             *ev_view);
 312
 313
 314 G_DEFINE_TYPE (EvView, ev_view, GTK_TYPE_WIDGET)
 315
 316 static void
 317 scroll_to_current_page (EvView *view, GtkOrientation orientation)
 318 {
 319         GdkPoint view_point;
 320
 321         if (view->document == NULL) {
 322                 return;
 323         }
 324
 325         doc_point_to_view_point (view, view->current_page, &view->pending_point, &view_point);
 326
 327         if (orientation == GTK_ORIENTATION_VERTICAL) {
 328                 view->pending_point.y = 0;
 329         } else {
 330                 view->pending_point.x = 0;
 331         }
 332
 333         if (orientation == GTK_ORIENTATION_VERTICAL) {
 334                 if (view->continuous) {
 335                         gtk_adjustment_clamp_page (view->vadjustment,
 336                                                    view_point.y - view->spacing / 2,
 337                                                    view_point.y + view->vadjustment->page_size);
 338                 } else {
 339                         gtk_adjustment_set_value (view->vadjustment,
 340                                                   CLAMP (view_point.y,
 341                                                   view->vadjustment->lower,
 342                                                   view->vadjustment->upper -
 343                                                   view->vadjustment->page_size));
 344                 }
 345         } else {
 346                 if (view->dual_page) {
 347                         gtk_adjustment_clamp_page (view->hadjustment,
 348                                                    view_point.x,
 349                                                    view_point.x + view->hadjustment->page_size);
 350                 } else {
 351                         gtk_adjustment_set_value (view->hadjustment,
 352                                                   CLAMP (view_point.x,
 353                                                   view->hadjustment->lower,
 354                                                   view->hadjustment->upper -
 355                                                   view->hadjustment->page_size));
 356                 }
 357         }
 358 }
 359
 360 static void
 361 view_set_adjustment_values (EvView         *view,
 362                             GtkOrientation  orientation)
 363 {
 364         GtkWidget *widget = GTK_WIDGET (view);
 365         GtkAdjustment *adjustment;
 366         int requisition;
 367         int allocation;
 368
 369         double factor;
 370         gint new_value;
 371
 372         if (orientation == GTK_ORIENTATION_HORIZONTAL)  {
 373                 requisition = widget->requisition.width;
 374                 allocation = widget->allocation.width;
 375                 adjustment = view->hadjustment;
 376         } else {
 377                 requisition = widget->requisition.height;
 378                 allocation = widget->allocation.height;
 379                 adjustment = view->vadjustment;
 380         }
 381
 382         if (!adjustment)
 383                 return;
 384
 385         factor = 1.0;
 386         switch (view->pending_scroll) {
 387                 case SCROLL_TO_KEEP_POSITION:
 388                         factor = (adjustment->value) / adjustment->upper;
 389                         break;
 390                 case SCROLL_TO_PAGE_POSITION:
 391                         break;
 392                 case SCROLL_TO_CENTER:
 393                         factor = (adjustment->value + adjustment->page_size * 0.5) / adjustment->upper;
 394                         break;
 395         }
 396
 397         adjustment->page_size = allocation;
 398         adjustment->step_increment = allocation * 0.1;
 399         adjustment->page_increment = allocation * 0.9;
 400         adjustment->lower = 0;
 401         adjustment->upper = MAX (allocation, requisition);
 402
 403         /*
 404          * We add 0.5 to the values before to average out our rounding errors.
 405          */
 406         switch (view->pending_scroll) {
 407                 case SCROLL_TO_KEEP_POSITION:
 408                         new_value = CLAMP (adjustment->upper * factor + 0.5, 0, adjustment->upper - adjustment->page_size);
 409                         gtk_adjustment_set_value (adjustment, (int)new_value);
 410                         break;
 411                 case SCROLL_TO_PAGE_POSITION:
 412                         scroll_to_current_page (view, orientation);
 413                         break;
 414                 case SCROLL_TO_CENTER:
 415                         new_value = CLAMP (adjustment->upper * factor - adjustment->page_size * 0.5 + 0.5,
 416                                            0, adjustment->upper - adjustment->page_size);
 417                         gtk_adjustment_set_value (adjustment, (int)new_value);
 418                         break;
 419         }
 420
 421         gtk_adjustment_changed (adjustment);
 422 }
 423
 424 static void
 425 view_update_range_and_current_page (EvView *view)
 426 {
 427         gint current_page;
 428         gint best_current_page = -1;
 429
 430         if (view->pending_scroll != SCROLL_TO_KEEP_POSITION)
 431                 return;
 432
 433         /* Presentation trumps all other modes */
 434         if (view->presentation) {
 435                 view->start_page = view->current_page;
 436                 view->end_page = view->current_page;
 437         } else if (view->continuous) {
 438                 GdkRectangle current_area, unused, page_area;
 439                 GtkBorder border;
 440                 gboolean found = FALSE;
 441                 gint area_max, area;
 442                 int i;
 443
 444                 if (!(view->vadjustment && view->hadjustment))
 445                         return;
 446
 447                 current_area.x = view->hadjustment->value;
 448                 current_area.width = view->hadjustment->upper;
 449                 current_area.y = view->vadjustment->value;
 450                 current_area.height = view->vadjustment->page_size;
 451
 452                 for (i = 0; i < ev_page_cache_get_n_pages (view->page_cache); i++) {
 453
 454                         get_page_extents (view, i, &page_area, &border);
 455
 456                         if (gdk_rectangle_intersect (&current_area, &page_area, &unused)) {
 457                                 area = unused.width * unused.height;
 458
 459                                 if (!found) {
 460                                         area_max = area;
 461                                         view->start_page = i;
 462                                         found = TRUE;
 463                                         best_current_page = i;
 464                                 }
 465                                 if (area > area_max) {
 466                                         best_current_page = (area == area_max) ? MIN (i, best_current_page) : i;
 467                                         area_max = area;
 468                                 }
 469
 470                                 view->end_page = i;
 471                         } else if (found) {
 472                                 break;
 473                         }
 474                 }
 475
 476         } else if (view->dual_page) {
 477                 if (view->current_page % 2 == ev_page_cache_get_dual_even_left (view->page_cache)) {
 478                         view->start_page = view->current_page;
 479                         if (view->current_page + 1 < ev_page_cache_get_n_pages (view->page_cache))
 480                                 view->end_page = view->start_page + 1;
 481                         else
 482                                 view->end_page = view->start_page;
 483                 } else {
 484                         if (view->current_page < 1)
 485                                 view->start_page = view->current_page;
 486                         else
 487                                 view->start_page = view->current_page - 1;
 488                         view->end_page = view->current_page;
 489                 }
 490         } else {
 491                 view->start_page = view->current_page;
 492                 view->end_page = view->current_page;
 493         }
 494
 495         best_current_page = MAX (best_current_page, view->start_page);
 496         current_page = ev_page_cache_get_current_page (view->page_cache);
 497
 498         if (current_page != best_current_page) {
 499                 view->current_page = best_current_page;
 500                 ev_page_cache_set_current_page (view->page_cache, best_current_page);
 501         }
 502
 503         ev_pixbuf_cache_set_page_range (view->pixbuf_cache,
 504                                         view->start_page,
 505                                         view->end_page,
 506                                         view->rotation,
 507                                         view->scale,
 508                                         view->selection_info.selections);
 509 }
 510
 511 static void
 512 set_scroll_adjustment (EvView *view,
 513                        GtkOrientation  orientation,
 514                        GtkAdjustment  *adjustment)
 515 {
 516         GtkAdjustment **to_set;
 517
 518         if (orientation == GTK_ORIENTATION_HORIZONTAL)
 519                 to_set = &view->hadjustment;
 520         else
 521                 to_set = &view->vadjustment;
 522
 523         if (*to_set != adjustment) {
 524                 if (*to_set) {
 525                         g_signal_handlers_disconnect_by_func (*to_set,
 526                                                               (gpointer) on_adjustment_value_changed,
 527                                                               view);
 528                         g_object_unref (*to_set);
 529                 }
 530
 531                 *to_set = adjustment;
 532                 view_set_adjustment_values (view, orientation);
 533
 534                 if (*to_set) {
 535                         g_object_ref (*to_set);
 536                         g_signal_connect (*to_set, "value_changed",
 537                                           G_CALLBACK (on_adjustment_value_changed), view);
 538                 }
 539         }
 540 }
 541
 542 static void
 543 ev_view_set_scroll_adjustments (EvView *view,
 544                                 GtkAdjustment  *hadjustment,
 545                                 GtkAdjustment  *vadjustment)
 546 {
 547         set_scroll_adjustment (view, GTK_ORIENTATION_HORIZONTAL, hadjustment);
 548         set_scroll_adjustment (view, GTK_ORIENTATION_VERTICAL, vadjustment);
 549
 550         on_adjustment_value_changed (NULL, view);
 551 }
 552
 553 static void
 554 add_scroll_binding_keypad (GtkBindingSet  *binding_set,
 555                            guint           keyval,
 556                            GdkModifierType modifiers,
 557                            EvScrollType    scroll,
 558                            gboolean        horizontal)
 559 {
 560   guint keypad_keyval = keyval - GDK_Left + GDK_KP_Left;
 561
 562   gtk_binding_entry_add_signal (binding_set, keyval, modifiers,
 563                                 "binding_activated", 2,
 564                                 EV_TYPE_SCROLL_TYPE, scroll,
 565                                 G_TYPE_BOOLEAN, horizontal);
 566   gtk_binding_entry_add_signal (binding_set, keypad_keyval, modifiers,
 567                                 "binding_activated", 2,
 568                                 EV_TYPE_SCROLL_TYPE, scroll,
 569                                 G_TYPE_BOOLEAN, horizontal);
 570 }
 571
 572 void
 573 ev_view_scroll (EvView        *view,
 574                 EvScrollType   scroll,
 575                 gboolean horizontal)
 576 {
 577         GtkAdjustment *adjustment;
 578         double value, increment;
 579         gboolean first_page = FALSE;
 580         gboolean last_page = FALSE;
 581
 582         view->jump_to_find_result = FALSE;
 583
 584         if (view->presentation) {
 585                 switch (scroll) {
 586                         case EV_SCROLL_PAGE_BACKWARD:
 587                         case EV_SCROLL_STEP_BACKWARD:
 588                                 ev_view_previous_page (view);
 589                                 break;
 590                         case EV_SCROLL_PAGE_FORWARD:
 591                         case EV_SCROLL_STEP_FORWARD:
 592                                 ev_view_next_page (view);
 593                                 break;
 594                         default:
 595                                 break;
 596                 }
 597                 return;
 598         }
 599
 600         /* Assign values for increment and vertical adjustment */
 601         adjustment = horizontal ? view->hadjustment : view->vadjustment;
 602         increment = adjustment->page_size * 0.75;
 603         value = adjustment->value;
 604
 605         /* Assign boolean for first and last page */
 606         if (view->current_page == 0)
 607                 first_page = TRUE;
 608         if (view->current_page == ev_page_cache_get_n_pages (view->page_cache) - 1)
 609                 last_page = TRUE;
 610
 611         switch (scroll) {
 612                 case EV_SCROLL_PAGE_BACKWARD:
 613                         /* Do not jump backwards if at the first page */
 614                         if (value == (adjustment->lower) && first_page) {
 615                                 /* Do nothing */
 616                                 /* At the top of a page, assign the upper bound limit of previous page */
 617                         } else if (value == (adjustment->lower)) {
 618                                 value = adjustment->upper - adjustment->page_size;
 619                                 ev_view_previous_page (view);
 620                                 /* Jump to the top */
 621                         } else {
 622                                 value = MAX (value - increment, adjustment->lower);
 623                         }
 624                         break;
 625                 case EV_SCROLL_PAGE_FORWARD:
 626                         /* Do not jump forward if at the last page */
 627                         if (value == (adjustment->upper - adjustment->page_size) && last_page) {
 628                                 /* Do nothing */
 629                         /* At the bottom of a page, assign the lower bound limit of next page */
 630                         } else if (value == (adjustment->upper - adjustment->page_size)) {
 631                                 value = 0;
 632                                 ev_view_next_page (view);
 633                         /* Jump to the bottom */
 634                         } else {
 635                                 value = MIN (value + increment, adjustment->upper - adjustment->page_size);
 636                         }
 637                         break;
 638                 case EV_SCROLL_STEP_BACKWARD:
 639                         value -= adjustment->step_increment;
 640                         break;
 641                 case EV_SCROLL_STEP_FORWARD:
 642                         value += adjustment->step_increment;
 643                         break;
 644                 case EV_SCROLL_STEP_DOWN:
 645                         value -= adjustment->step_increment / 10;
 646                         break;
 647                 case EV_SCROLL_STEP_UP:
 648                         value += adjustment->step_increment / 10;
 649                         break;
 650                 default:
 651                         break;
 652         }
 653
 654         value = CLAMP (value, adjustment->lower,
 655                        adjustment->upper - adjustment->page_size);
 656
 657         gtk_adjustment_set_value (adjustment, value);
 658 }
 659
 660 #define MARGIN 5
 661
 662 static void
 663 ensure_rectangle_is_visible (EvView *view, GdkRectangle *rect)
 664 {
 665         GtkWidget *widget = GTK_WIDGET (view);
 666         GtkAdjustment *adjustment;
 667         int value;
 668
 669         view->pending_scroll = SCROLL_TO_KEEP_POSITION;
 670
 671         adjustment = view->vadjustment;
 672
 673         if (rect->y < adjustment->value) {
 674                 value = MAX (adjustment->lower, rect->y - MARGIN);
 675                 gtk_adjustment_set_value (view->vadjustment, value);
 676         } else if (rect->y + rect->height >
 677                    adjustment->value + widget->allocation.height) {
 678                 value = MIN (adjustment->upper, rect->y + rect->height -
 679                              widget->allocation.height + MARGIN);
 680                 gtk_adjustment_set_value (view->vadjustment, value);
 681         }
 682
 683         adjustment = view->hadjustment;
 684
 685         if (rect->x < adjustment->value) {
 686                 value = MAX (adjustment->lower, rect->x - MARGIN);
 687                 gtk_adjustment_set_value (view->hadjustment, value);
 688         } else if (rect->x + rect->height >
 689                    adjustment->value + widget->allocation.width) {
 690                 value = MIN (adjustment->upper, rect->x + rect->width -
 691                              widget->allocation.width + MARGIN);
 692                 gtk_adjustment_set_value (view->hadjustment, value);
 693         }
 694 }
 695
 696 /*** Geometry computations ***/
 697
 698 static void
 699 compute_border (EvView *view, int width, int height, GtkBorder *border)
 700 {
 701         if (view->presentation) {
 702                 border->left = 0;
 703                 border->right = 0;
 704                 border->top = 0;
 705                 border->bottom = 0;
 706         } else {
 707                 ev_document_misc_get_page_border_size (width, height, border);
 708         }
 709 }
 710
 711 static void
 712 get_page_y_offset (EvView *view, int page, double zoom, int *y_offset)
 713 {
 714         int max_width, offset;
 715         GtkBorder border;
 716
 717         g_return_if_fail (y_offset != NULL);
 718
 719         ev_page_cache_get_max_width (view->page_cache, view->rotation, zoom, &max_width);
 720
 721         compute_border (view, max_width, max_width, &border);
 722
 723         if (view->dual_page) {
 724                 ev_page_cache_get_height_to_page (view->page_cache, page,
 725                                                   view->rotation, zoom, NULL, &offset);
 726                 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);
 727         } else {
 728                 ev_page_cache_get_height_to_page (view->page_cache, page,
 729                                                   view->rotation, zoom, &offset, NULL);
 730                 offset += (page + 1) * view->spacing + page * (border.top + border.bottom);
 731         }
 732
 733         *y_offset = offset;
 734         return;
 735 }
 736
 737 static gboolean
 738 get_page_extents (EvView       *view,
 739                   gint          page,
 740                   GdkRectangle *page_area,
 741                   GtkBorder    *border)
 742 {
 743         GtkWidget *widget;
 744         int width, height;
 745
 746         widget = GTK_WIDGET (view);
 747
 748         /* Get the size of the page */
 749         ev_page_cache_get_size (view->page_cache, page,
 750                                 view->rotation,
 751                                 view->scale,
 752                                 &width, &height);
 753         compute_border (view, width, height, border);
 754         page_area->width = width + border->left + border->right;
 755         page_area->height = height + border->top + border->bottom;
 756
 757         if (view->presentation) {
 758                 page_area->x = (MAX (0, widget->allocation.width - width))/2;
 759                 page_area->y = (MAX (0, widget->allocation.height - height))/2;
 760         } else if (view->continuous) {
 761                 gint max_width;
 762                 gint x, y;
 763
 764                 ev_page_cache_get_max_width (view->page_cache, view->rotation,
 765                                              view->scale, &max_width);
 766                 max_width = max_width + border->left + border->right;
 767                 /* Get the location of the bounding box */
 768                 if (view->dual_page) {
 769                         x = view->spacing + ((page % 2 == ev_page_cache_get_dual_even_left (view->page_cache)) ? 0 : 1) * (max_width + view->spacing);
 770                         x = x + MAX (0, widget->allocation.width - (max_width * 2 + view->spacing * 3)) / 2;
 771                         if (page % 2 == ev_page_cache_get_dual_even_left (view->page_cache))
 772                                 x = x + (max_width - width - border->left - border->right);
 773                 } else {
 774                         x = view->spacing;
 775                         x = x + MAX (0, widget->allocation.width - (width + view->spacing * 2)) / 2;
 776                 }
 777
 778                 get_page_y_offset (view, page, view->scale, &y);
 779
 780                 page_area->x = x;
 781                 page_area->y = y;
 782         } else {
 783                 gint x, y;
 784                 if (view->dual_page) {
 785                         gint width_2, height_2;
 786                         gint max_width = width;
 787                         gint max_height = height;
 788                         GtkBorder overall_border;
 789                         gint other_page;
 790
 791                         other_page = (page % 2 == ev_page_cache_get_dual_even_left (view->page_cache)) ? page + 1: page - 1;
 792
 793                         /* First, we get the bounding box of the two pages */
 794                         if (other_page < ev_page_cache_get_n_pages (view->page_cache)
 795                             && (0 <= other_page)) {
 796                                 ev_page_cache_get_size (view->page_cache,
 797                                                         other_page,
 798                                                         view->rotation,
 799                                                         view->scale,
 800                                                         &width_2, &height_2);
 801                                 if (width_2 > width)
 802                                         max_width = width_2;
 803                                 if (height_2 > height)
 804                                         max_height = height_2;
 805                         }
 806                         compute_border (view, max_width, max_height, &overall_border);
 807
 808                         /* Find the offsets */
 809                         x = view->spacing;
 810                         y = view->spacing;
 811
 812                         /* Adjust for being the left or right page */
 813                         if (page % 2 == ev_page_cache_get_dual_even_left (view->page_cache))
 814                                 x = x + max_width - width;
 815                         else
 816                                 x = x + (max_width + overall_border.left + overall_border.right) + view->spacing;
 817
 818                         y = y + (max_height - height)/2;
 819
 820                         /* Adjust for extra allocation */
 821                         x = x + MAX (0, widget->allocation.width -
 822                                      ((max_width + overall_border.left + overall_border.right) * 2 + view->spacing * 3))/2;
 823                         y = y + MAX (0, widget->allocation.height - (height + view->spacing * 2))/2;
 824                 } else {
 825                         x = view->spacing;
 826                         y = view->spacing;
 827
 828                         /* Adjust for extra allocation */
 829                         x = x + MAX (0, widget->allocation.width - (width + border->left + border->right + view->spacing * 2))/2;
 830                         y = y + MAX (0, widget->allocation.height - (height + border->top + border->bottom +  view->spacing * 2))/2;
 831                 }
 832
 833                 page_area->x = x;
 834                 page_area->y = y;
 835         }
 836
 837         return TRUE;
 838 }
 839
 840 static void
 841 view_point_to_doc_point (EvView *view,
 842                          GdkPoint *view_point,
 843                          GdkRectangle *page_area,
 844                          double  *doc_point_x,
 845                          double  *doc_point_y)
 846 {
 847         *doc_point_x = (double) (view_point->x - page_area->x) / view->scale;
 848         *doc_point_y = (double) (view_point->y - page_area->y) / view->scale;
 849 }
 850
 851 static void
 852 view_rect_to_doc_rect (EvView *view,
 853                        GdkRectangle *view_rect,
 854                        GdkRectangle *page_area,
 855                        EvRectangle  *doc_rect)
 856 {
 857         doc_rect->x1 = (double) (view_rect->x - page_area->x) / view->scale;
 858         doc_rect->y1 = (double) (view_rect->y - page_area->y) / view->scale;
 859         doc_rect->x2 = doc_rect->x1 + (double) view_rect->width / view->scale;
 860         doc_rect->y2 = doc_rect->y1 + (double) view_rect->height / view->scale;
 861 }
 862
 863 static gboolean
 864 doc_point_to_view_point (EvView       *view,
 865                          int           page,
 866                          EvPoint      *doc_point,
 867                          GdkPoint     *view_point)
 868 {
 869         GdkRectangle page_area;
 870         GtkBorder border;
 871         double x, y, view_x, view_y;
 872         int width, height;
 873
 874         ev_page_cache_get_size (view->page_cache, page,
 875                                 view->rotation,
 876                                 1.0,
 877                                 &width, &height);
 878
 879         if (view->rotation == 0) {
 880                 x = doc_point->x;
 881                 y = doc_point->y;
 882         } else if (view->rotation == 90) {
 883                 x = width - doc_point->y;
 884                 y = doc_point->x;
 885         } else if (view->rotation == 180) {
 886                 x = width - doc_point->x;
 887                 y = height - doc_point->y;
 888         } else if (view->rotation == 270) {
 889                 x = doc_point->y;
 890                 y = height - doc_point->x;
 891         } else {
 892                 g_assert_not_reached ();
 893         }
 894
 895         get_page_extents (view, page, &page_area, &border);
 896
 897         view_x = x * view->scale;
 898         view_y = y * view->scale;
 899         view_point->x = view_x + page_area.x;
 900         view_point->y = view_y + page_area.y;
 901
 902         return (view_x > 0 && view_x <= page_area.width &&
 903                 view_y > 0 && view_y <= page_area.height);
 904 }
 905
 906 static void
 907 doc_rect_to_view_rect (EvView       *view,
 908                        int           page,
 909                        EvRectangle  *doc_rect,
 910                        GdkRectangle *view_rect)
 911 {
 912         GdkRectangle page_area;
 913         GtkBorder border;
 914         double x, y, w, h;
 915         int width, height;
 916
 917         ev_page_cache_get_size (view->page_cache, page,
 918                                 view->rotation,
 919                                 1.0,
 920                                 &width, &height);
 921
 922         if (view->rotation == 0) {
 923                 x = doc_rect->x1;
 924                 y = doc_rect->y1;
 925                 w = doc_rect->x2 - doc_rect->x1;
 926                 h = doc_rect->y2 - doc_rect->y1;
 927         } else if (view->rotation == 90) {
 928                 x = width - doc_rect->y2;
 929                 y = doc_rect->x1;
 930                 w = doc_rect->y2 - doc_rect->y1;
 931                 h = doc_rect->x2 - doc_rect->x1;
 932         } else if (view->rotation == 180) {
 933                 x = width - doc_rect->x2;
 934                 y = height - doc_rect->y2;
 935                 w = doc_rect->x2 - doc_rect->x1;
 936                 h = doc_rect->y2 - doc_rect->y1;
 937         } else if (view->rotation == 270) {
 938                 x = doc_rect->y1;
 939                 y = height - doc_rect->x2;
 940                 w = doc_rect->y2 - doc_rect->y1;
 941                 h = doc_rect->x2 - doc_rect->x1;
 942         } else {
 943                 g_assert_not_reached ();
 944         }
 945
 946         get_page_extents (view, page, &page_area, &border);
 947
 948         view_rect->x = x * view->scale + page_area.x;
 949         view_rect->y = y * view->scale + page_area.y;
 950         view_rect->width = w * view->scale;
 951         view_rect->height = h * view->scale;
 952 }
 953
 954 static void
 955 find_page_at_location (EvView  *view,
 956                        gdouble  x,
 957                        gdouble  y,
 958                        gint    *page,
 959                        gint    *x_offset,
 960                        gint    *y_offset)
 961 {
 962         int i;
 963
 964         if (view->document == NULL)
 965                 return;
 966
 967         g_assert (page);
 968         g_assert (x_offset);
 969         g_assert (y_offset);
 970
 971         for (i = view->start_page; i <= view->end_page; i++) {
 972                 GdkRectangle page_area;
 973                 GtkBorder border;
 974
 975                 if (! get_page_extents (view, i, &page_area, &border))
 976                         continue;
 977
 978                 if ((x >= page_area.x + border.left) &&
 979                     (x < page_area.x + page_area.width - border.right) &&
 980                     (y >= page_area.y + border.top) &&
 981                     (y < page_area.y + page_area.height - border.bottom)) {
 982                         *page = i;
 983                         *x_offset = x - (page_area.x + border.left);
 984                         *y_offset = y - (page_area.y + border.top);
 985                         return;
 986                 }
 987         }
 988
 989         *page = -1;
 990 }
 991
 992 static gboolean
 993 location_in_text (EvView  *view,
 994                   gdouble  x,
 995                   gdouble  y)
 996 {
 997         GdkRegion *region;
 998         gint page = -1;
 999         gint x_offset = 0, y_offset = 0;
1000
1001         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1002
1003         if (page == -1)
1004                 return FALSE;
1005
1006         region = ev_pixbuf_cache_get_text_mapping (view->pixbuf_cache, page);
1007
1008         if (region)
1009                 return gdk_region_point_in (region, x_offset / view->scale, y_offset / view->scale);
1010         else
1011                 return FALSE;
1012 }
1013
1014 static int
1015 ev_view_get_width (EvView *view)
1016 {
1017         return GTK_WIDGET (view)->allocation.width;
1018 }
1019
1020 static int
1021 ev_view_get_height (EvView *view)
1022 {
1023         return GTK_WIDGET (view)->allocation.height;
1024 }
1025
1026 static gboolean
1027 location_in_selected_text (EvView  *view,
1028                            gdouble  x,
1029                            gdouble  y)
1030 {
1031         gint page = -1;
1032         gint x_offset = 0, y_offset = 0;
1033         EvViewSelection *selection;
1034         GList *l = NULL;
1035
1036         for (l = view->selection_info.selections; l != NULL; l = l->next) {
1037                 selection = (EvViewSelection *)l->data;
1038
1039                 find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1040
1041                 if (page != selection->page)
1042                         continue;
1043
1044                 if (selection->covered_region &&
1045                     gdk_region_point_in (selection->covered_region, x_offset, y_offset))
1046                         return TRUE;
1047         }
1048
1049         return FALSE;
1050 }
1051
1052 /*** Hyperref ***/
1053 static EvLink *
1054 ev_view_get_link_at_location (EvView  *view,
1055                               gdouble  x,
1056                               gdouble  y)
1057 {
1058         gint page = -1;
1059         gint x_offset = 0, y_offset = 0;
1060         GList *link_mapping;
1061
1062         x += view->scroll_x;
1063         y += view->scroll_y;
1064
1065         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1066
1067         if (page == -1)
1068                 return NULL;
1069
1070         link_mapping = ev_pixbuf_cache_get_link_mapping (view->pixbuf_cache, page);
1071
1072         if (link_mapping)
1073                 return ev_link_mapping_find (link_mapping, x_offset / view->scale, y_offset / view->scale);
1074         else
1075                 return NULL;
1076 }
1077
1078 static void
1079 goto_fitr_dest (EvView *view, EvLinkDest *dest)
1080 {
1081         EvPoint doc_point;
1082         int page;
1083         double zoom;
1084
1085         zoom = zoom_for_size_best_fit (ev_link_dest_get_right (dest) - ev_link_dest_get_left (dest),
1086                                        ev_link_dest_get_top (dest) - ev_link_dest_get_bottom (dest),
1087                                        ev_view_get_width (view),
1088                                        ev_view_get_height (view), 0, 0);
1089
1090         ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1091         ev_view_set_zoom (view, zoom, FALSE);
1092
1093         page = ev_link_dest_get_page (dest);
1094         doc_point.x = ev_link_dest_get_left (dest);
1095         doc_point.y = ev_link_dest_get_top (dest);
1096
1097         view->current_page = page;
1098         view->pending_point = doc_point;
1099         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1100
1101         gtk_widget_queue_resize (GTK_WIDGET (view));
1102 }
1103
1104 static void
1105 goto_fitv_dest (EvView *view, EvLinkDest *dest)
1106 {
1107         EvPoint doc_point;
1108         int doc_width, doc_height, page;
1109         double zoom;
1110
1111         page = ev_link_dest_get_page (dest);
1112         ev_page_cache_get_size (view->page_cache, page, 0, 1.0, &doc_width, &doc_height);
1113
1114         doc_point.x = ev_link_dest_get_left (dest);
1115         doc_point.y = 0;
1116
1117         zoom = zoom_for_size_fit_height (doc_width - doc_point.x , doc_height,
1118                                          ev_view_get_width (view),
1119                                          ev_view_get_height (view), 0);
1120
1121         ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1122         ev_view_set_zoom (view, zoom, FALSE);
1123
1124         view->current_page = page;
1125         view->pending_point = doc_point;
1126         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1127
1128         gtk_widget_queue_resize (GTK_WIDGET (view));
1129 }
1130
1131 static void
1132 goto_fith_dest (EvView *view, EvLinkDest *dest)
1133 {
1134         EvPoint doc_point;
1135         int doc_width, doc_height, page;
1136         double zoom;
1137
1138         page = ev_link_dest_get_page (dest);
1139         ev_page_cache_get_size (view->page_cache, page, 0, 1.0, &doc_width, &doc_height);
1140
1141         doc_point.x = 0;
1142         doc_point.y = doc_height - ev_link_dest_get_top (dest);
1143
1144         zoom = zoom_for_size_fit_width (doc_width, ev_link_dest_get_top (dest),
1145                                         ev_view_get_width (view),
1146                                         ev_view_get_height (view), 0);
1147
1148         ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1149         ev_view_set_zoom (view, zoom, FALSE);
1150
1151         view->current_page = page;
1152         view->pending_point = doc_point;
1153         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1154
1155         gtk_widget_queue_resize (GTK_WIDGET (view));
1156 }
1157
1158 static void
1159 goto_fit_dest (EvView *view, EvLinkDest *dest)
1160 {
1161         double zoom;
1162         int doc_width, doc_height;
1163         int page;
1164
1165         page = ev_link_dest_get_page (dest);
1166         ev_page_cache_get_size (view->page_cache, page, 0, 1.0, &doc_width, &doc_height);
1167
1168         zoom = zoom_for_size_best_fit (doc_width, doc_height, ev_view_get_width (view),
1169                                        ev_view_get_height (view), 0, 0);
1170
1171         ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1172         ev_view_set_zoom (view, zoom, FALSE);
1173
1174         view->current_page = page;
1175         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1176
1177         gtk_widget_queue_resize (GTK_WIDGET (view));
1178 }
1179
1180 static void
1181 goto_xyz_dest (EvView *view, EvLinkDest *dest)
1182 {
1183         EvPoint doc_point;
1184         int height, page;
1185         double zoom;
1186
1187         zoom = ev_link_dest_get_zoom (dest);
1188         page = ev_link_dest_get_page (dest);
1189         ev_page_cache_get_size (view->page_cache, page, 0, 1.0, NULL, &height);
1190
1191         if (zoom != 0) {
1192                 ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1193                 ev_view_set_zoom (view, zoom, FALSE);
1194         }
1195
1196         doc_point.x = ev_link_dest_get_left (dest);
1197         doc_point.y = height - ev_link_dest_get_top (dest);
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_dest (EvView *view, EvLinkDest *dest)
1208 {
1209         EvLinkDestType type;
1210         int page, n_pages;
1211
1212         page = ev_link_dest_get_page (dest);
1213         n_pages = ev_page_cache_get_n_pages (view->page_cache);
1214
1215         if (page < 0 || page >= n_pages)
1216                 return;
1217
1218         type = ev_link_dest_get_dest_type (dest);
1219
1220         switch (type) {
1221                 case EV_LINK_DEST_TYPE_PAGE:
1222                         ev_page_cache_set_current_page (view->page_cache, page);
1223                         break;
1224                 case EV_LINK_DEST_TYPE_FIT:
1225                         goto_fit_dest (view, dest);
1226                         break;
1227                 case EV_LINK_DEST_TYPE_FITH:
1228                         goto_fith_dest (view, dest);
1229                         break;
1230                 case EV_LINK_DEST_TYPE_FITV:
1231                         goto_fitv_dest (view, dest);
1232                         break;
1233                 case EV_LINK_DEST_TYPE_FITR:
1234                         goto_fitr_dest (view, dest);
1235                         break;
1236                 case EV_LINK_DEST_TYPE_XYZ:
1237                         goto_xyz_dest (view, dest);
1238                         break;
1239                 default:
1240                         g_assert_not_reached ();
1241         }
1242 }
1243
1244 void
1245 ev_view_goto_dest (EvView *view, EvLinkDest *dest)
1246 {
1247         EvLinkDestType type;
1248
1249         type = ev_link_dest_get_dest_type (dest);
1250
1251         if (type == EV_LINK_DEST_TYPE_NAMED) {
1252                 EvLinkDest  *dest2;
1253                 const gchar *named_dest;
1254
1255                 named_dest = ev_link_dest_get_named_dest (dest);
1256                 dest2 = ev_document_links_find_link_dest (EV_DOCUMENT_LINKS (view->document),
1257                                                           named_dest);
1258                 if (dest2) {
1259                         goto_dest (view, dest2);
1260                         g_object_unref (dest2);
1261                 }
1262
1263                 return;
1264         }
1265
1266         goto_dest (view, dest);
1267 }
1268
1269 void
1270 ev_view_handle_link (EvView *view, EvLink *link)
1271 {
1272         EvLinkAction    *action = NULL;
1273         EvLinkActionType type;
1274
1275         action = ev_link_get_action (link);
1276         if (!action)
1277                 return;
1278
1279         type = ev_link_action_get_action_type (action);
1280
1281         switch (type) {
1282                 case EV_LINK_ACTION_TYPE_GOTO_DEST: {
1283                         EvLinkDest *dest;
1284
1285                         dest = ev_link_action_get_dest (action);
1286                         ev_view_goto_dest (view, dest);
1287                 }
1288                         break;
1289                 case EV_LINK_ACTION_TYPE_GOTO_REMOTE:
1290                 case EV_LINK_ACTION_TYPE_EXTERNAL_URI:
1291                 case EV_LINK_ACTION_TYPE_LAUNCH:
1292                         g_signal_emit (view, signals[SIGNAL_EXTERNAL_LINK], 0, action);
1293                         break;
1294         }
1295 }
1296
1297 static gchar *
1298 page_label_from_dest (EvView *view, EvLinkDest *dest)
1299 {
1300         EvLinkDestType type;
1301         gchar *msg = NULL;
1302
1303         type = ev_link_dest_get_dest_type (dest);
1304
1305         switch (type) {
1306                 case EV_LINK_DEST_TYPE_NAMED: {
1307                         EvLinkDest  *dest2;
1308                         const gchar *named_dest;
1309
1310                         named_dest = ev_link_dest_get_named_dest (dest);
1311                         dest2 = ev_document_links_find_link_dest (EV_DOCUMENT_LINKS (view->document),
1312                                                                   named_dest);
1313                         if (dest2) {
1314                                 msg = ev_page_cache_get_page_label (view->page_cache,
1315                                                                     ev_link_dest_get_page (dest2));
1316                                 g_object_unref (dest2);
1317                         }
1318                 }
1319
1320                         break;
1321                 default:
1322                         msg = ev_page_cache_get_page_label (view->page_cache,
1323                                                             ev_link_dest_get_page (dest));
1324         }
1325
1326         return msg;
1327 }
1328
1329 static char *
1330 tip_from_link (EvView *view, EvLink *link)
1331 {
1332         EvLinkAction *action;
1333         EvLinkActionType type;
1334         char *msg = NULL;
1335         char *page_label;
1336         const char *title;
1337
1338         action = ev_link_get_action (link);
1339         title = ev_link_get_title (link);
1340
1341         if (!action)
1342                 return title ? g_strdup (title) : NULL;
1343
1344         type = ev_link_action_get_action_type (action);
1345
1346         switch (type) {
1347                 case EV_LINK_ACTION_TYPE_GOTO_DEST:
1348                         page_label = page_label_from_dest (view,
1349                                                            ev_link_action_get_dest (action));
1350                         msg = g_strdup_printf (_("Go to page %s"), page_label);
1351                         g_free (page_label);
1352                         break;
1353                 case EV_LINK_ACTION_TYPE_GOTO_REMOTE:
1354                         if (title) {
1355                                 msg = g_strdup_printf (_("Go to %s on file %s"), title,
1356                                                        ev_link_action_get_filename (action));
1357                         } else {
1358                                 msg = g_strdup_printf (_("Go to file %s"),
1359                                                        ev_link_action_get_filename (action));
1360                         }
1361
1362                         break;
1363                 case EV_LINK_ACTION_TYPE_EXTERNAL_URI:
1364                         msg = g_strdup (ev_link_action_get_uri (action));
1365                         break;
1366                 case EV_LINK_ACTION_TYPE_LAUNCH:
1367                         msg = g_strdup_printf (_("Launch %s"),
1368                                                ev_link_action_get_filename (action));
1369                         break;
1370                 default:
1371                         if (title)
1372                                 msg = g_strdup (title);
1373                         break;
1374         }
1375
1376         return msg;
1377 }
1378
1379 static void
1380 handle_link_over_xy (EvView *view, gint x, gint y)
1381 {
1382         EvLink *link;
1383
1384         link = ev_view_get_link_at_location (view, x, y);
1385
1386         if (view->link_tooltip == NULL) {
1387                 view->link_tooltip = ev_tooltip_new (GTK_WIDGET (view));
1388         }
1389
1390         if (view->hovered_link != link) {
1391                 view->hovered_link = link;
1392                 ev_tooltip_deactivate (EV_TOOLTIP (view->link_tooltip));
1393         }
1394
1395         if (link) {
1396                 char *msg = tip_from_link (view, link);
1397
1398                 if (msg && g_utf8_validate (msg, -1, NULL)) {
1399                         EvTooltip *tooltip = EV_TOOLTIP (view->link_tooltip);
1400
1401                         ev_tooltip_set_position (tooltip, x, y);
1402                         ev_tooltip_set_text (tooltip, msg);
1403                         ev_tooltip_activate (tooltip);
1404                 }
1405                 g_free (msg);
1406
1407                 ev_view_set_cursor (view, EV_VIEW_CURSOR_LINK);
1408         } else if (location_in_text (view, x + view->scroll_x, y + view->scroll_y)) {
1409                 ev_view_set_cursor (view, EV_VIEW_CURSOR_IBEAM);
1410         } else {
1411                 ev_view_set_status (view, NULL);
1412                 if (view->cursor == EV_VIEW_CURSOR_LINK ||
1413                     view->cursor == EV_VIEW_CURSOR_IBEAM)
1414                         ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
1415         }
1416         return;
1417 }
1418
1419 /*** GtkWidget implementation ***/
1420
1421 static void
1422 ev_view_size_request_continuous_dual_page (EvView         *view,
1423                                            GtkRequisition *requisition)
1424 {
1425         int max_width;
1426         gint n_pages;
1427         GtkBorder border;
1428
1429         ev_page_cache_get_max_width (view->page_cache, view->rotation,
1430                                      view->scale, &max_width);
1431         compute_border (view, max_width, max_width, &border);
1432
1433         n_pages = ev_page_cache_get_n_pages (view->page_cache) + 1;
1434
1435         requisition->width = (max_width + border.left + border.right) * 2 + (view->spacing * 3);
1436         get_page_y_offset (view, n_pages, view->scale, &requisition->height);
1437
1438         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
1439                 requisition->width = 1;
1440         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
1441                 requisition->width = 1;
1442                 /* FIXME: This could actually be set on one page docs or docs
1443                  * with a strange aspect ratio. */
1444                 /* requisition->height = 1;*/
1445         }
1446 }
1447
1448 static void
1449 ev_view_size_request_continuous (EvView         *view,
1450                                  GtkRequisition *requisition)
1451 {
1452         int max_width;
1453         int n_pages;
1454         GtkBorder border;
1455
1456
1457         ev_page_cache_get_max_width (view->page_cache, view->rotation,
1458                                      view->scale, &max_width);
1459         n_pages = ev_page_cache_get_n_pages (view->page_cache);
1460         compute_border (view, max_width, max_width, &border);
1461
1462         requisition->width = max_width + (view->spacing * 2) + border.left + border.right;
1463         get_page_y_offset (view, n_pages, view->scale, &requisition->height);
1464
1465         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
1466                 requisition->width = 1;
1467         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
1468                 requisition->width = 1;
1469                 /* FIXME: This could actually be set on one page docs or docs
1470                  * with a strange aspect ratio. */
1471                 /* requisition->height = 1;*/
1472         }
1473 }
1474
1475 static void
1476 ev_view_size_request_dual_page (EvView         *view,
1477                                 GtkRequisition *requisition)
1478 {
1479         GtkBorder border;
1480         gint width, height;
1481
1482         /* Find the largest of the two. */
1483         ev_page_cache_get_size (view->page_cache,
1484                                 view->current_page,
1485                                 view->rotation,
1486                                 view->scale,
1487                                 &width, &height);
1488         if (view->current_page + 1 < ev_page_cache_get_n_pages (view->page_cache)) {
1489                 gint width_2, height_2;
1490                 ev_page_cache_get_size (view->page_cache,
1491                                         view->current_page + 1,
1492                                         view->rotation,
1493                                         view->scale,
1494                                         &width_2, &height_2);
1495                 if (width_2 > width) {
1496                         width = width_2;
1497                         height = height_2;
1498                 }
1499         }
1500         compute_border (view, width, height, &border);
1501
1502         requisition->width = ((width + border.left + border.right) * 2) +
1503                 (view->spacing * 3);
1504         requisition->height = (height + border.top + border.bottom) +
1505                 (view->spacing * 2);
1506
1507         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
1508                 requisition->width = 1;
1509         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
1510                 requisition->width = 1;
1511                 requisition->height = 1;
1512         }
1513 }
1514
1515 static void
1516 ev_view_size_request_single_page (EvView         *view,
1517                                   GtkRequisition *requisition)
1518 {
1519         GtkBorder border;
1520         gint width, height;
1521
1522         ev_page_cache_get_size (view->page_cache,
1523                                 view->current_page,
1524                                 view->rotation,
1525                                 view->scale,
1526                                 &width, &height);
1527         compute_border (view, width, height, &border);
1528
1529         requisition->width = width + border.left + border.right + (2 * view->spacing);
1530         requisition->height = height + border.top + border.bottom + (2 * view->spacing);
1531
1532         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
1533                 requisition->width = 1;
1534                 requisition->height = height + border.top + border.bottom + (2 * view->spacing);
1535         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
1536                 requisition->width = 1;
1537                 requisition->height = 1;
1538         }
1539 }
1540
1541 static void
1542 ev_view_size_request (GtkWidget      *widget,
1543                       GtkRequisition *requisition)
1544 {
1545         EvView *view = EV_VIEW (widget);
1546
1547         if (view->document == NULL) {
1548                 requisition->width = 1;
1549                 requisition->height = 1;
1550                 return;
1551         }
1552
1553         if (view->presentation) {
1554                 requisition->width = 1;
1555                 requisition->height = 1;
1556                 return;
1557         }
1558
1559         if (view->continuous && view->dual_page)
1560                 ev_view_size_request_continuous_dual_page (view, requisition);
1561         else if (view->continuous)
1562                 ev_view_size_request_continuous (view, requisition);
1563         else if (view->dual_page)
1564                 ev_view_size_request_dual_page (view, requisition);
1565         else
1566                 ev_view_size_request_single_page (view, requisition);
1567 }
1568
1569 static void
1570 ev_view_size_allocate (GtkWidget      *widget,
1571                        GtkAllocation  *allocation)
1572 {
1573         EvView *view = EV_VIEW (widget);
1574
1575         if (view->sizing_mode == EV_SIZING_FIT_WIDTH ||
1576             view->sizing_mode == EV_SIZING_BEST_FIT) {
1577
1578                 g_signal_emit (view, signals[SIGNAL_ZOOM_INVALID], 0);
1579
1580                 ev_view_size_request (widget, &widget->requisition);
1581         }
1582
1583         view_set_adjustment_values (view, GTK_ORIENTATION_HORIZONTAL);
1584         view_set_adjustment_values (view, GTK_ORIENTATION_VERTICAL);
1585
1586         view->pending_scroll = SCROLL_TO_KEEP_POSITION;
1587         view->pending_resize = FALSE;
1588
1589         if (view->document)
1590                 view_update_range_and_current_page (view);
1591
1592         GTK_WIDGET_CLASS (ev_view_parent_class)->size_allocate (widget, allocation);
1593 }
1594
1595 static void
1596 ev_view_realize (GtkWidget *widget)
1597 {
1598         EvView *view = EV_VIEW (widget);
1599         GdkWindowAttr attributes;
1600
1601         GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
1602
1603
1604         attributes.window_type = GDK_WINDOW_CHILD;
1605         attributes.wclass = GDK_INPUT_OUTPUT;
1606         attributes.visual = gtk_widget_get_visual (widget);
1607         attributes.colormap = gtk_widget_get_colormap (widget);
1608
1609         attributes.x = widget->allocation.x;
1610         attributes.y = widget->allocation.y;
1611         attributes.width = widget->allocation.width;
1612         attributes.height = widget->allocation.height;
1613         attributes.event_mask = GDK_EXPOSURE_MASK |
1614                                 GDK_BUTTON_PRESS_MASK |
1615                                 GDK_BUTTON_RELEASE_MASK |
1616                                 GDK_SCROLL_MASK |
1617                                 GDK_KEY_PRESS_MASK |
1618                                 GDK_POINTER_MOTION_MASK |
1619                                 GDK_POINTER_MOTION_HINT_MASK |
1620                                 GDK_ENTER_NOTIFY_MASK |
1621                                 GDK_LEAVE_NOTIFY_MASK;
1622
1623         widget->window = gdk_window_new (gtk_widget_get_parent_window (widget),
1624                                          &attributes,
1625                                          GDK_WA_X | GDK_WA_Y |
1626                                          GDK_WA_COLORMAP |
1627                                          GDK_WA_VISUAL);
1628         gdk_window_set_user_data (widget->window, widget);
1629         widget->style = gtk_style_attach (widget->style, widget->window);
1630
1631         if (view->presentation)
1632                 gdk_window_set_background (widget->window, &widget->style->black);
1633         else
1634                 gdk_window_set_background (widget->window, &widget->style->mid [GTK_STATE_NORMAL]);
1635 }
1636
1637 static gboolean
1638 ev_view_scroll_event (GtkWidget *widget, GdkEventScroll *event)
1639 {
1640         EvView *view = EV_VIEW (widget);
1641         guint state;
1642
1643         state = event->state & gtk_accelerator_get_default_mod_mask ();
1644
1645         if (state == GDK_CONTROL_MASK && view->presentation == FALSE) {
1646                 ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1647
1648                 if (event->direction == GDK_SCROLL_UP ||
1649                     event->direction == GDK_SCROLL_LEFT) {
1650                         if (ev_view_can_zoom_in (view)) {
1651                                 ev_view_zoom_in (view);
1652                         }
1653                 } else {
1654                         if (ev_view_can_zoom_out (view)) {
1655                                 ev_view_zoom_out (view);
1656                         }
1657                 }
1658
1659                 return TRUE;
1660         }
1661
1662         view->jump_to_find_result = FALSE;
1663         /* Shift+Wheel scrolls the in the perpendicular direction */
1664         if (state & GDK_SHIFT_MASK) {
1665                 if (event->direction == GDK_SCROLL_UP)
1666                         event->direction = GDK_SCROLL_LEFT;
1667                 if (event->direction == GDK_SCROLL_LEFT)
1668                         event->direction = GDK_SCROLL_UP;
1669                 if (event->direction == GDK_SCROLL_DOWN)
1670                         event->direction = GDK_SCROLL_RIGHT;
1671                 if (event->direction == GDK_SCROLL_RIGHT)
1672                         event->direction = GDK_SCROLL_DOWN;
1673
1674                 event->state &= ~GDK_SHIFT_MASK;
1675                 state &= ~GDK_SHIFT_MASK;
1676         }
1677
1678         if (state == 0 && view->presentation) {
1679                 switch (event->direction) {
1680                         case GDK_SCROLL_DOWN:
1681                         case GDK_SCROLL_RIGHT:
1682                                 ev_view_next_page (view);
1683                                 break;
1684                         case GDK_SCROLL_UP:
1685                         case GDK_SCROLL_LEFT:
1686                                 ev_view_previous_page (view);
1687                                 break;
1688                 }
1689
1690                 return TRUE;
1691         }
1692
1693         return FALSE;
1694 }
1695
1696 static EvViewSelection *
1697 find_selection_for_page (EvView *view,
1698                          gint    page)
1699 {
1700         GList *list;
1701
1702         for (list = view->selection_info.selections; list != NULL; list = list->next) {
1703                 EvViewSelection *selection;
1704
1705                 selection = (EvViewSelection *) list->data;
1706
1707                 if (selection->page == page)
1708                         return selection;
1709         }
1710
1711         return NULL;
1712 }
1713
1714 static gboolean
1715 ev_view_expose_event (GtkWidget      *widget,
1716                       GdkEventExpose *event)
1717 {
1718         EvView *view = EV_VIEW (widget);
1719         int i;
1720
1721         if (view->loading) {
1722                 GdkRectangle area = {0};
1723
1724                 area.width = widget->allocation.width;
1725                 area.height = widget->allocation.height;
1726
1727                 draw_loading_text (view,
1728                                    &area,
1729                                    &(event->area));
1730         }
1731
1732         if (view->document == NULL)
1733                 return FALSE;
1734
1735         for (i = view->start_page; i <= view->end_page; i++) {
1736                 GdkRectangle page_area;
1737                 GtkBorder border;
1738
1739                 if (!get_page_extents (view, i, &page_area, &border))
1740                         continue;
1741
1742                 page_area.x -= view->scroll_x;
1743                 page_area.y -= view->scroll_y;
1744
1745                 draw_one_page (view, i, &page_area, &border, &(event->area));
1746
1747                 if (EV_IS_DOCUMENT_FIND (view->document))
1748                         highlight_find_results (view, i);
1749         }
1750
1751         return FALSE;
1752 }
1753
1754 static gboolean
1755 ev_view_popup_menu (GtkWidget *widget)
1756 {
1757     gint x, y;
1758     EvLink *link;
1759     EvView *view = EV_VIEW (widget);
1760
1761     gtk_widget_get_pointer (widget, &x, &y);
1762     link = ev_view_get_link_at_location (view, x, y);
1763     g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, link);
1764     return TRUE;
1765 }
1766
1767 static gboolean
1768 ev_view_button_press_event (GtkWidget      *widget,
1769                             GdkEventButton *event)
1770 {
1771         EvView *view = EV_VIEW (widget);
1772         EvLink *link;
1773
1774         if (!GTK_WIDGET_HAS_FOCUS (widget)) {
1775                 gtk_widget_grab_focus (widget);
1776         }
1777
1778         view->pressed_button = event->button;
1779         view->selection_info.in_drag = FALSE;
1780
1781         switch (event->button) {
1782                 case 1:
1783                         if (view->selection_info.selections) {
1784                                 if (location_in_selected_text (view,
1785                                                                event->x + view->scroll_x,
1786                                                                event->y + view->scroll_y)) {
1787                                         view->selection_info.in_drag = TRUE;
1788                                 } else {
1789                                         clear_selection (view);
1790                                 }
1791
1792                                 gtk_widget_queue_draw (widget);
1793                         }
1794
1795                         view->selection_info.start.x = event->x + view->scroll_x;
1796                         view->selection_info.start.y = event->y + view->scroll_y;
1797
1798                         return TRUE;
1799                 case 2:
1800                         /* use root coordinates as reference point because
1801                          * scrolling changes window relative coordinates */
1802                         view->drag_info.start.x = event->x_root;
1803                         view->drag_info.start.y = event->y_root;
1804                         view->drag_info.hadj = gtk_adjustment_get_value (view->hadjustment);
1805                         view->drag_info.vadj = gtk_adjustment_get_value (view->vadjustment);
1806
1807                         ev_view_set_cursor (view, EV_VIEW_CURSOR_DRAG);
1808
1809                         return TRUE;
1810                 case 3:
1811                         link = ev_view_get_link_at_location (view, event->x, event->y);
1812                         g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, link);
1813                         return TRUE;
1814         }
1815
1816         return FALSE;
1817 }
1818
1819 static void
1820 ev_view_drag_data_get (GtkWidget        *widget,
1821                        GdkDragContext   *context,
1822                        GtkSelectionData *selection_data,
1823                        guint             info,
1824                        guint             time)
1825 {
1826         EvView *view = EV_VIEW (widget);
1827
1828         if (view->selection_info.selections &&
1829             ev_document_can_get_text (view->document)) {
1830                 gchar *text;
1831
1832                 text = get_selected_text (view);
1833
1834                 gtk_selection_data_set_text (selection_data, text, strlen (text));
1835
1836                 g_free (text);
1837         }
1838 }
1839
1840 static gboolean
1841 selection_update_idle_cb (EvView *view)
1842 {
1843         compute_selections (view, &view->selection_info.start, &view->motion);
1844         view->selection_update_id = 0;
1845         return FALSE;
1846 }
1847
1848 static gboolean
1849 selection_scroll_timeout_cb (EvView *view)
1850 {
1851         gint x, y, shift = 0;
1852         GtkWidget *widget = GTK_WIDGET (view);
1853
1854         gtk_widget_get_pointer (widget, &x, &y);
1855
1856         if (y > widget->allocation.height) {
1857                 shift = (y - widget->allocation.height) / 2;
1858         } else if (y < 0) {
1859                 shift = y / 2;
1860         }
1861
1862         if (shift)
1863                 gtk_adjustment_set_value (view->vadjustment,
1864                                           CLAMP (view->vadjustment->value + shift,
1865                                           view->vadjustment->lower,
1866                                           view->vadjustment->upper -
1867                                           view->vadjustment->page_size));
1868
1869         if (x > widget->allocation.width) {
1870                 shift = (x - widget->allocation.width) / 2;
1871         } else if (x < 0) {
1872                 shift = x / 2;
1873         }
1874
1875         if (shift)
1876                 gtk_adjustment_set_value (view->hadjustment,
1877                                           CLAMP (view->hadjustment->value + shift,
1878                                           view->hadjustment->lower,
1879                                           view->hadjustment->upper -
1880                                           view->hadjustment->page_size));
1881
1882         return TRUE;
1883 }
1884
1885 static gboolean
1886 ev_view_motion_notify_event (GtkWidget      *widget,
1887                              GdkEventMotion *event)
1888 {
1889         EvView *view = EV_VIEW (widget);
1890         gint x, y;
1891
1892         if (!view->document)
1893                 return FALSE;
1894
1895         if (event->is_hint || event->window != widget->window) {
1896             gtk_widget_get_pointer (widget, &x, &y);
1897         } else {
1898             x = event->x;
1899             y = event->y;
1900         }
1901
1902         if (view->selection_info.in_drag) {
1903                 if (gtk_drag_check_threshold (widget,
1904                                               view->selection_info.start.x,
1905                                               view->selection_info.start.y,
1906                                               x, y)) {
1907                         GdkDragContext *context;
1908                         GtkTargetList *target_list = gtk_target_list_new (NULL, 0);
1909
1910                         gtk_target_list_add_text_targets (target_list, 0);
1911
1912                         context = gtk_drag_begin (widget, target_list,
1913                                                   GDK_ACTION_COPY,
1914                                                   1, (GdkEvent *)event);
1915
1916                         view->selection_info.in_drag = FALSE;
1917
1918                         gtk_target_list_unref (target_list);
1919
1920                         return TRUE;
1921                 }
1922         }
1923
1924         /* For the Evince 0.4.x release, we limit selection to un-rotated
1925          * documents only.
1926          */
1927         if (view->pressed_button == 1 && view->rotation == 0) {
1928
1929                 /* Schedule timeout to scroll during selection and additionally
1930                  * scroll once to allow arbitrary speed. */
1931                 if (!view->selection_scroll_id)
1932                     view->selection_scroll_id = g_timeout_add (SCROLL_TIME, (GSourceFunc)selection_scroll_timeout_cb, view);
1933                 else
1934                     selection_scroll_timeout_cb (view);
1935
1936                 view->selection_info.in_selection = TRUE;
1937                 view->motion.x = x + view->scroll_x;
1938                 view->motion.y = y + view->scroll_y;
1939
1940                 /* Queue an idle to handle the motion.  We do this because
1941                  * handling any selection events in the motion could be slower
1942                  * than new motion events reach us.  We always put it in the
1943                  * idle to make sure we catch up and don't visibly lag the
1944                  * mouse. */
1945                 if (!view->selection_update_id)
1946                         view->selection_update_id = g_idle_add ((GSourceFunc)selection_update_idle_cb, view);
1947
1948                 return TRUE;
1949         } else if (view->pressed_button == 2) {
1950                 if (!view->drag_info.in_drag) {
1951                         gboolean start;
1952
1953                         start = gtk_drag_check_threshold (widget,
1954                                                           view->drag_info.start.x,
1955                                                           view->drag_info.start.y,
1956                                                           event->x_root,
1957                                                           event->y_root);
1958                         view->drag_info.in_drag = start;
1959                 }
1960
1961                 if (view->drag_info.in_drag) {
1962                         int dx, dy;
1963                         gdouble dhadj_value, dvadj_value;
1964
1965                         dx = event->x_root - view->drag_info.start.x;
1966                         dy = event->y_root - view->drag_info.start.y;
1967
1968                         dhadj_value = view->hadjustment->page_size *
1969                                       (gdouble)dx / widget->allocation.width;
1970                         dvadj_value = view->vadjustment->page_size *
1971                                       (gdouble)dy / widget->allocation.height;
1972
1973                         /* clamp scrolling to visible area */
1974                         gtk_adjustment_set_value (view->hadjustment,
1975                                                   MIN(view->drag_info.hadj - dhadj_value,
1976                                                       view->hadjustment->upper -
1977                                                       view->hadjustment->page_size));
1978                         gtk_adjustment_set_value (view->vadjustment,
1979                                                   MIN(view->drag_info.vadj - dvadj_value,
1980                                                       view->vadjustment->upper -
1981                                                       view->vadjustment->page_size));
1982
1983                         return TRUE;
1984                 }
1985         /* For the Evince 0.4.x release, we limit links to un-rotated documents
1986          * only.
1987          */
1988         } else if (view->pressed_button <= 0 &&
1989                    view->rotation == 0) {
1990                 handle_link_over_xy (view, x, y);
1991                 return TRUE;
1992         }
1993
1994         return FALSE;
1995 }
1996
1997 static gboolean
1998 ev_view_button_release_event (GtkWidget      *widget,
1999                               GdkEventButton *event)
2000 {
2001         EvView *view = EV_VIEW (widget);
2002         EvLink *link;
2003
2004         if (view->pressed_button == 2) {
2005                 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
2006         }
2007
2008         if (view->document) {
2009                 link = ev_view_get_link_at_location (view, event->x, event->y);
2010         } else {
2011                 link = NULL;
2012         }
2013
2014         view->pressed_button = -1;
2015         view->drag_info.in_drag = FALSE;
2016
2017         if (view->selection_scroll_id) {
2018             g_source_remove (view->selection_scroll_id);
2019             view->selection_scroll_id = 0;
2020         }
2021         if (view->selection_update_id) {
2022             g_source_remove (view->selection_update_id);
2023             view->selection_update_id = 0;
2024         }
2025
2026         if (view->selection_info.selections) {
2027                 ev_view_update_primary_selection (view);
2028
2029                 if (view->selection_info.in_drag) {
2030                         clear_selection (view);
2031                         gtk_widget_queue_draw (widget);
2032                 }
2033
2034                 view->selection_info.in_drag = FALSE;
2035         } else if (link) {
2036                 ev_view_handle_link (view, link);
2037         } else if (view->presentation) {
2038                 switch (event->button) {
2039                         case 1:
2040                                 ev_view_next_page (view);
2041                                 return TRUE;
2042                         case 3:
2043                                 ev_view_previous_page (view);
2044                                 return TRUE;
2045                 }
2046         }
2047
2048         return FALSE;
2049 }
2050
2051 static gint
2052 ev_view_focus_in (GtkWidget     *widget,
2053                   GdkEventFocus *event)
2054 {
2055         if (EV_VIEW (widget)->pixbuf_cache)
2056                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
2057         gtk_widget_queue_draw (widget);
2058
2059         return FALSE;
2060 }
2061
2062 static gint
2063 ev_view_focus_out (GtkWidget     *widget,
2064                      GdkEventFocus *event)
2065 {
2066         if (EV_VIEW (widget)->pixbuf_cache)
2067                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
2068         gtk_widget_queue_draw (widget);
2069
2070         return FALSE;
2071 }
2072
2073 static gboolean
2074 ev_view_leave_notify_event (GtkWidget *widget, GdkEventCrossing   *event)
2075 {
2076         EvView *view = EV_VIEW (widget);
2077
2078         ev_view_set_status (view, NULL);
2079
2080         if (view->cursor == EV_VIEW_CURSOR_LINK ||
2081             view->cursor == EV_VIEW_CURSOR_IBEAM)
2082                 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
2083
2084         if (view->link_tooltip) {
2085                 view->hovered_link = NULL;
2086                 ev_tooltip_deactivate (EV_TOOLTIP (view->link_tooltip));
2087         }
2088
2089         return FALSE;
2090 }
2091
2092 static gboolean
2093 ev_view_enter_notify_event (GtkWidget *widget, GdkEventCrossing   *event)
2094 {
2095         EvView *view = EV_VIEW (widget);
2096
2097         handle_link_over_xy (view, event->x, event->y);
2098
2099         return FALSE;
2100 }
2101
2102 static void
2103 ev_view_style_set (GtkWidget *widget,
2104                    GtkStyle  *old_style)
2105 {
2106         if (EV_VIEW (widget)->pixbuf_cache)
2107                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
2108
2109         GTK_WIDGET_CLASS (ev_view_parent_class)->style_set (widget, old_style);
2110 }
2111
2112 /*** Drawing ***/
2113
2114 static guint32
2115 ev_gdk_color_to_rgb (const GdkColor *color)
2116 {
2117   guint32 result;
2118   result = (0xff0000 | (color->red & 0xff00));
2119   result <<= 8;
2120   result |= ((color->green & 0xff00) | (color->blue >> 8));
2121   return result;
2122 }
2123
2124 static void
2125 draw_rubberband (GtkWidget *widget, GdkWindow *window,
2126                  const GdkRectangle *rect, guchar alpha)
2127 {
2128         GdkGC *gc;
2129         GdkPixbuf *pixbuf;
2130         GdkColor *fill_color_gdk;
2131         guint fill_color;
2132
2133         fill_color_gdk = gdk_color_copy (&GTK_WIDGET (widget)->style->base[GTK_STATE_SELECTED]);
2134         fill_color = ev_gdk_color_to_rgb (fill_color_gdk) << 8 | alpha;
2135
2136         pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE, 8,
2137                                  rect->width, rect->height);
2138         gdk_pixbuf_fill (pixbuf, fill_color);
2139
2140         gdk_draw_pixbuf (window, NULL, pixbuf,
2141                          0, 0,
2142                          rect->x - EV_VIEW (widget)->scroll_x, rect->y - EV_VIEW (widget)->scroll_y,
2143                          rect->width, rect->height,
2144                          GDK_RGB_DITHER_NONE,
2145                          0, 0);
2146
2147         g_object_unref (pixbuf);
2148
2149         gc = gdk_gc_new (window);
2150         gdk_gc_set_rgb_fg_color (gc, fill_color_gdk);
2151         gdk_draw_rectangle (window, gc, FALSE,
2152                             rect->x - EV_VIEW (widget)->scroll_x, rect->y - EV_VIEW (widget)->scroll_y,
2153                             rect->width - 1,
2154                             rect->height - 1);
2155         g_object_unref (gc);
2156
2157         gdk_color_free (fill_color_gdk);
2158 }
2159
2160
2161 static void
2162 highlight_find_results (EvView *view, int page)
2163 {
2164         EvDocumentFind *find;
2165         int i, results = 0;
2166
2167         g_return_if_fail (EV_IS_DOCUMENT_FIND (view->document));
2168
2169         find = EV_DOCUMENT_FIND (view->document);
2170
2171         results = ev_document_find_get_n_results (find, page);
2172
2173         for (i = 0; i < results; i++) {
2174                 EvRectangle rectangle;
2175                 GdkRectangle view_rectangle;
2176                 guchar alpha;
2177
2178                 if (i == view->find_result && page == view->current_page) {
2179                         alpha = 0x90;
2180                 } else {
2181                         alpha = 0x20;
2182                 }
2183
2184                 ev_document_find_get_result (find, page, i, &rectangle);
2185                 doc_rect_to_view_rect (view, page, &rectangle, &view_rectangle);
2186                 draw_rubberband (GTK_WIDGET (view), GTK_WIDGET(view)->window,
2187                                  &view_rectangle, alpha);
2188         }
2189 }
2190
2191 static void
2192 draw_loading_text (EvView       *view,
2193                    GdkRectangle *page_area,
2194                    GdkRectangle *expose_area)
2195 {
2196         PangoLayout *layout;
2197         PangoFontDescription *font_desc;
2198         PangoRectangle logical_rect;
2199         double real_scale;
2200         int target_width;
2201
2202         const char *loading_text = _("Loading...");
2203
2204         layout = gtk_widget_create_pango_layout (GTK_WIDGET (view), loading_text);
2205
2206         font_desc = pango_font_description_new ();
2207
2208
2209         /* We set the font to be 10 points, get the size, and scale appropriately */
2210         pango_font_description_set_size (font_desc, 10 * PANGO_SCALE);
2211         pango_layout_set_font_description (layout, font_desc);
2212         pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
2213
2214         /* Make sure we fit the middle of the page */
2215         target_width = MAX (page_area->width / 2, 1);
2216         real_scale = ((double)target_width / (double) logical_rect.width) * (PANGO_SCALE * 10);
2217         pango_font_description_set_size (font_desc, (int)real_scale);
2218         pango_layout_set_font_description (layout, font_desc);
2219         pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
2220
2221         gtk_paint_layout (GTK_WIDGET (view)->style,
2222                           GTK_WIDGET (view)->window,
2223                           GTK_WIDGET_STATE (view),
2224                           FALSE,
2225                           page_area,
2226                           GTK_WIDGET (view),
2227                           NULL,
2228                           page_area->x + (target_width/2),
2229                           page_area->y + (page_area->height - logical_rect.height) / 2,
2230                           layout);
2231
2232         pango_font_description_free (font_desc);
2233         g_object_unref (layout);
2234 }
2235
2236 static void
2237 draw_one_page (EvView          *view,
2238                gint             page,
2239                GdkRectangle    *page_area,
2240                GtkBorder       *border,
2241                GdkRectangle    *expose_area)
2242 {
2243         gint width, height;
2244         GdkPixbuf *current_pixbuf;
2245         GdkRectangle overlap;
2246         GdkRectangle real_page_area;
2247         EvViewSelection *selection;
2248         gint current_page;
2249
2250         g_assert (view->document);
2251
2252         if (! gdk_rectangle_intersect (page_area, expose_area, &overlap))
2253                 return;
2254
2255         current_page = ev_page_cache_get_current_page (view->page_cache);
2256         selection = find_selection_for_page (view, page);
2257         ev_page_cache_get_size (view->page_cache,
2258                                 page, view->rotation,
2259                                 view->scale,
2260                                 &width, &height);
2261         /* Render the document itself */
2262         real_page_area = *page_area;
2263
2264         real_page_area.x += border->left;
2265         real_page_area.y += border->top;
2266         real_page_area.width -= (border->left + border->right);
2267         real_page_area.height -= (border->top + border->bottom);
2268
2269         ev_document_misc_paint_one_page (GTK_WIDGET(view)->window,
2270                                          GTK_WIDGET (view),
2271                                          page_area, border,
2272                                          page == current_page);
2273
2274         if (gdk_rectangle_intersect (&real_page_area, expose_area, &overlap)) {
2275                 GdkPixbuf *selection_pixbuf = NULL;
2276                 GdkPixbuf *scaled_image;
2277                 GdkPixbuf *scaled_selection;
2278
2279                 current_pixbuf = ev_pixbuf_cache_get_pixbuf (view->pixbuf_cache, page);
2280
2281                 /* Get the selection pixbuf iff we have something to draw */
2282                 if (current_pixbuf && view->selection_mode == EV_VIEW_SELECTION_TEXT && selection)
2283                         selection_pixbuf = ev_pixbuf_cache_get_selection_pixbuf (view->pixbuf_cache,
2284                                                                                  page,
2285                                                                                  view->scale,
2286                                                                                  NULL);
2287
2288                 if (current_pixbuf == NULL)
2289                         scaled_image = NULL;
2290                 else if (width == gdk_pixbuf_get_width (current_pixbuf) &&
2291                          height == gdk_pixbuf_get_height (current_pixbuf))
2292                         scaled_image = g_object_ref (current_pixbuf);
2293                 else
2294                         /* FIXME: We don't want to scale the whole area, just the right
2295                          * area of it */
2296                         scaled_image = gdk_pixbuf_scale_simple (current_pixbuf,
2297                                                                 width, height,
2298                                                                 GDK_INTERP_NEAREST);
2299
2300                 if (selection_pixbuf == NULL)
2301                         scaled_selection = NULL;
2302                 else if (width == gdk_pixbuf_get_width (selection_pixbuf) &&
2303                          height == gdk_pixbuf_get_height (selection_pixbuf))
2304                         scaled_selection = g_object_ref (selection_pixbuf);
2305                 else
2306                         /* FIXME: We don't want to scale the whole area, just the right
2307                          * area of it */
2308                         scaled_selection = gdk_pixbuf_scale_simple (selection_pixbuf,
2309                                                                     width, height,
2310                                                                     GDK_INTERP_NEAREST);
2311
2312                 if (scaled_image) {
2313                         gdk_draw_pixbuf (GTK_WIDGET(view)->window,
2314                                          GTK_WIDGET (view)->style->fg_gc[GTK_STATE_NORMAL],
2315                                          scaled_image,
2316                                          overlap.x - real_page_area.x,
2317                                          overlap.y - real_page_area.y,
2318                                          overlap.x, overlap.y,
2319                                          overlap.width, overlap.height,
2320                                          GDK_RGB_DITHER_NORMAL,
2321                                          0, 0);
2322                         g_object_unref (scaled_image);
2323                 } else {
2324                         draw_loading_text (view,
2325                                            &real_page_area,
2326                                            expose_area);
2327                 }
2328
2329                 if (scaled_selection) {
2330                         gdk_draw_pixbuf (GTK_WIDGET(view)->window,
2331                                          GTK_WIDGET (view)->style->fg_gc[GTK_STATE_NORMAL],
2332                                          scaled_selection,
2333                                          overlap.x - real_page_area.x,
2334                                          overlap.y - real_page_area.y,
2335                                          overlap.x, overlap.y,
2336                                          overlap.width, overlap.height,
2337                                          GDK_RGB_DITHER_NORMAL,
2338                                          0, 0);
2339                         g_object_unref (scaled_selection);
2340                 }
2341         }
2342 }
2343
2344 /*** GObject functions ***/
2345
2346 static void
2347 ev_view_finalize (GObject *object)
2348 {
2349         EvView *view = EV_VIEW (object);
2350
2351         LOG ("Finalize");
2352
2353         g_free (view->status);
2354         g_free (view->find_status);
2355
2356         clear_selection (view);
2357
2358         G_OBJECT_CLASS (ev_view_parent_class)->finalize (object);
2359 }
2360
2361 static void
2362 ev_view_destroy (GtkObject *object)
2363 {
2364         EvView *view = EV_VIEW (object);
2365
2366         if (view->document) {
2367                 g_object_unref (view->document);
2368                 view->document = NULL;
2369         }
2370
2371         if (view->pixbuf_cache) {
2372                 g_object_unref (view->pixbuf_cache);
2373                 view->pixbuf_cache = NULL;
2374         }
2375
2376         if (view->link_tooltip) {
2377                 gtk_widget_destroy (view->link_tooltip);
2378         }
2379
2380         if (view->selection_scroll_id) {
2381             g_source_remove (view->selection_scroll_id);
2382             view->selection_scroll_id = 0;
2383         }
2384
2385         if (view->selection_update_id) {
2386             g_source_remove (view->selection_update_id);
2387             view->selection_update_id = 0;
2388         }
2389
2390         ev_view_set_scroll_adjustments (view, NULL, NULL);
2391
2392         GTK_OBJECT_CLASS (ev_view_parent_class)->destroy (object);
2393 }
2394
2395 static void
2396 ev_view_set_property (GObject      *object,
2397                       guint         prop_id,
2398                       const GValue *value,
2399                       GParamSpec   *pspec)
2400 {
2401         EvView *view = EV_VIEW (object);
2402
2403         switch (prop_id) {
2404                 case PROP_CONTINUOUS:
2405                         ev_view_set_continuous (view, g_value_get_boolean (value));
2406                         break;
2407                 case PROP_DUAL_PAGE:
2408                         ev_view_set_dual_page (view, g_value_get_boolean (value));
2409                         break;
2410                 case PROP_FULLSCREEN:
2411                         ev_view_set_fullscreen (view, g_value_get_boolean (value));
2412                         break;
2413                 case PROP_PRESENTATION:
2414                         ev_view_set_presentation (view, g_value_get_boolean (value));
2415                         break;
2416                 case PROP_SIZING_MODE:
2417                         ev_view_set_sizing_mode (view, g_value_get_enum (value));
2418                         break;
2419                 case PROP_ZOOM:
2420                         ev_view_set_zoom (view, g_value_get_double (value), FALSE);
2421                         break;
2422                 case PROP_ROTATION:
2423                         ev_view_set_rotation (view, g_value_get_int (value));
2424                         break;
2425                 default:
2426                         G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
2427         }
2428 }
2429
2430 static AtkObject *
2431 ev_view_get_accessible (GtkWidget *widget)
2432 {
2433         static gboolean first_time = TRUE;
2434
2435         if (first_time) {
2436                 AtkObjectFactory *factory;
2437                 AtkRegistry *registry;
2438                 GType derived_type;
2439                 GType derived_atk_type;
2440
2441                 /*
2442                  * Figure out whether accessibility is enabled by looking at the
2443                  * type of the accessible object which would be created for
2444                  * the parent type of EvView.
2445                  */
2446                 derived_type = g_type_parent (EV_TYPE_VIEW);
2447
2448                 registry = atk_get_default_registry ();
2449                 factory = atk_registry_get_factory (registry,
2450                                                     derived_type);
2451                 derived_atk_type = atk_object_factory_get_accessible_type (factory);
2452                 if (g_type_is_a (derived_atk_type, GTK_TYPE_ACCESSIBLE))
2453                         atk_registry_set_factory_type (registry,
2454                                                        EV_TYPE_VIEW,
2455                                                        ev_view_accessible_factory_get_type ());
2456                 first_time = FALSE;
2457         }
2458         return GTK_WIDGET_CLASS (ev_view_parent_class)->get_accessible (widget);
2459 }
2460
2461 static void
2462 ev_view_get_property (GObject *object,
2463                       guint prop_id,
2464                       GValue *value,
2465                       GParamSpec *pspec)
2466 {
2467         EvView *view = EV_VIEW (object);
2468
2469         switch (prop_id) {
2470                 case PROP_STATUS:
2471                         g_value_set_string (value, view->status);
2472                         break;
2473                 case PROP_FIND_STATUS:
2474                         g_value_set_string (value, view->status);
2475                         break;
2476                 case PROP_CONTINUOUS:
2477                         g_value_set_boolean (value, view->continuous);
2478                         break;
2479                 case PROP_DUAL_PAGE:
2480                         g_value_set_boolean (value, view->dual_page);
2481                         break;
2482                 case PROP_FULLSCREEN:
2483                         g_value_set_boolean (value, view->fullscreen);
2484                         break;
2485                 case PROP_PRESENTATION:
2486                         g_value_set_boolean (value, view->presentation);
2487                         break;
2488                 case PROP_SIZING_MODE:
2489                         g_value_set_enum (value, view->sizing_mode);
2490                         break;
2491                 case PROP_ZOOM:
2492                         g_value_set_double (value, view->scale);
2493                         break;
2494                 case PROP_ROTATION:
2495                         g_value_set_int (value, view->rotation);
2496                         break;
2497                 case PROP_HAS_SELECTION:
2498                         g_value_set_boolean (value,
2499                                              view->selection_info.selections != NULL);
2500                         break;
2501                 default:
2502                         G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
2503         }
2504 }
2505
2506 static void
2507 ev_view_class_init (EvViewClass *class)
2508 {
2509         GObjectClass *object_class = G_OBJECT_CLASS (class);
2510         GtkObjectClass *gtk_object_class = GTK_OBJECT_CLASS (class);
2511         GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
2512         GtkBindingSet *binding_set;
2513
2514         object_class->finalize = ev_view_finalize;
2515         object_class->set_property = ev_view_set_property;
2516         object_class->get_property = ev_view_get_property;
2517
2518         widget_class->expose_event = ev_view_expose_event;
2519         widget_class->button_press_event = ev_view_button_press_event;
2520         widget_class->motion_notify_event = ev_view_motion_notify_event;
2521         widget_class->button_release_event = ev_view_button_release_event;
2522         widget_class->focus_in_event = ev_view_focus_in;
2523         widget_class->focus_out_event = ev_view_focus_out;
2524         widget_class->get_accessible = ev_view_get_accessible;
2525         widget_class->size_request = ev_view_size_request;
2526         widget_class->size_allocate = ev_view_size_allocate;
2527         widget_class->realize = ev_view_realize;
2528         widget_class->scroll_event = ev_view_scroll_event;
2529         widget_class->enter_notify_event = ev_view_enter_notify_event;
2530         widget_class->leave_notify_event = ev_view_leave_notify_event;
2531         widget_class->style_set = ev_view_style_set;
2532         widget_class->drag_data_get = ev_view_drag_data_get;
2533         widget_class->popup_menu = ev_view_popup_menu;
2534         gtk_object_class->destroy = ev_view_destroy;
2535
2536         class->set_scroll_adjustments = ev_view_set_scroll_adjustments;
2537         class->binding_activated = ev_view_scroll;
2538
2539         widget_class->set_scroll_adjustments_signal =
2540             g_signal_new ("set-scroll-adjustments",
2541                           G_OBJECT_CLASS_TYPE (object_class),
2542                           G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
2543                           G_STRUCT_OFFSET (EvViewClass, set_scroll_adjustments),
2544                           NULL, NULL,
2545                           ev_marshal_VOID__OBJECT_OBJECT,
2546                           G_TYPE_NONE, 2,
2547                           GTK_TYPE_ADJUSTMENT,
2548                           GTK_TYPE_ADJUSTMENT);
2549
2550         signals[SIGNAL_BINDING_ACTIVATED] = g_signal_new ("binding_activated",
2551                          G_TYPE_FROM_CLASS (object_class),
2552                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
2553                          G_STRUCT_OFFSET (EvViewClass, binding_activated),
2554                          NULL, NULL,
2555                          ev_marshal_VOID__ENUM_BOOLEAN,
2556                          G_TYPE_NONE, 2,
2557                          GTK_TYPE_SCROLL_TYPE,
2558                          G_TYPE_BOOLEAN);
2559
2560         signals[SIGNAL_ZOOM_INVALID] = g_signal_new ("zoom-invalid",
2561                          G_TYPE_FROM_CLASS (object_class),
2562                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
2563                          G_STRUCT_OFFSET (EvViewClass, zoom_invalid),
2564                          NULL, NULL,
2565                          ev_marshal_VOID__VOID,
2566                          G_TYPE_NONE, 0, G_TYPE_NONE);
2567         signals[SIGNAL_EXTERNAL_LINK] = g_signal_new ("external-link",
2568                          G_TYPE_FROM_CLASS (object_class),
2569                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
2570                          G_STRUCT_OFFSET (EvViewClass, external_link),
2571                          NULL, NULL,
2572                          g_cclosure_marshal_VOID__OBJECT,
2573                          G_TYPE_NONE, 1,
2574                          G_TYPE_OBJECT);
2575         signals[SIGNAL_POPUP_MENU] = g_signal_new ("popup",
2576                          G_TYPE_FROM_CLASS (object_class),
2577                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
2578                          G_STRUCT_OFFSET (EvViewClass, popup_menu),
2579                          NULL, NULL,
2580                          g_cclosure_marshal_VOID__OBJECT,
2581                          G_TYPE_NONE, 1,
2582                          G_TYPE_OBJECT);
2583
2584         g_object_class_install_property (object_class,
2585                                          PROP_STATUS,
2586                                          g_param_spec_string ("status",
2587                                                               "Status Message",
2588                                                               "The status message",
2589                                                               NULL,
2590                                                               G_PARAM_READABLE));
2591
2592         g_object_class_install_property (object_class,
2593                                          PROP_FIND_STATUS,
2594                                          g_param_spec_string ("find-status",
2595                                                               "Find Status Message",
2596                                                               "The find status message",
2597                                                               NULL,
2598                                                               G_PARAM_READABLE));
2599
2600         g_object_class_install_property (object_class,
2601                                          PROP_CONTINUOUS,
2602                                          g_param_spec_boolean ("continuous",
2603                                                                "Continuous",
2604                                                                "Continuous scrolling mode",
2605                                                                TRUE,
2606                                                                G_PARAM_READWRITE));
2607
2608         g_object_class_install_property (object_class,
2609                                          PROP_DUAL_PAGE,
2610                                          g_param_spec_boolean ("dual-page",
2611                                                                "Dual Page",
2612                                                                "Two pages visible at once",
2613                                                                FALSE,
2614                                                                G_PARAM_READWRITE));
2615         g_object_class_install_property (object_class,
2616                                          PROP_FULLSCREEN,
2617                                          g_param_spec_boolean ("fullscreen",
2618                                                                "Full Screen",
2619                                                                "Draw page in a fullscreen fashion",
2620                                                                FALSE,
2621                                                                G_PARAM_READWRITE));
2622         g_object_class_install_property (object_class,
2623                                          PROP_PRESENTATION,
2624                                          g_param_spec_boolean ("presentation",
2625                                                                "Presentation",
2626                                                                "Draw page in presentation mode",
2627                                                                TRUE,
2628                                                                G_PARAM_READWRITE));
2629
2630         g_object_class_install_property (object_class,
2631                                          PROP_SIZING_MODE,
2632                                          g_param_spec_enum ("sizing-mode",
2633                                                             "Sizing Mode",
2634                                                             "Sizing Mode",
2635                                                             EV_TYPE_SIZING_MODE,
2636                                                             EV_SIZING_FIT_WIDTH,
2637                                                             G_PARAM_READWRITE));
2638
2639         g_object_class_install_property (object_class,
2640                                          PROP_ZOOM,
2641                                          g_param_spec_double ("zoom",
2642                                                               "Zoom factor",
2643                                                                "Zoom factor",
2644                                                                MIN_SCALE,
2645                                                                MAX_SCALE,
2646                                                                1.0,
2647                                                                G_PARAM_READWRITE));
2648         g_object_class_install_property (object_class,
2649                                          PROP_ROTATION,
2650                                          g_param_spec_double ("rotation",
2651                                                               "Rotation",
2652                                                                "Rotation",
2653                                                                0,
2654                                                                360,
2655                                                                0,
2656                                                                G_PARAM_READWRITE));
2657         g_object_class_install_property (object_class,
2658                                          PROP_HAS_SELECTION,
2659                                          g_param_spec_boolean ("has-selection",
2660                                                                "Has selection",
2661                                                                "The view has selections",
2662                                                                FALSE,
2663                                                                G_PARAM_READABLE));
2664
2665         binding_set = gtk_binding_set_by_class (class);
2666
2667         add_scroll_binding_keypad (binding_set, GDK_Left,  0, EV_SCROLL_STEP_BACKWARD, TRUE);
2668         add_scroll_binding_keypad (binding_set, GDK_Right, 0, EV_SCROLL_STEP_FORWARD,  TRUE);
2669         add_scroll_binding_keypad (binding_set, GDK_Left,  GDK_MOD1_MASK, EV_SCROLL_STEP_DOWN, TRUE);
2670         add_scroll_binding_keypad (binding_set, GDK_Right, GDK_MOD1_MASK, EV_SCROLL_STEP_UP,  TRUE);
2671         add_scroll_binding_keypad (binding_set, GDK_Up,    0, EV_SCROLL_STEP_BACKWARD, FALSE);
2672         add_scroll_binding_keypad (binding_set, GDK_Down,  0, EV_SCROLL_STEP_FORWARD,  FALSE);
2673         add_scroll_binding_keypad (binding_set, GDK_Up,    GDK_MOD1_MASK, EV_SCROLL_STEP_DOWN, FALSE);
2674         add_scroll_binding_keypad (binding_set, GDK_Down,  GDK_MOD1_MASK, EV_SCROLL_STEP_UP,  FALSE);
2675 }
2676
2677 static void
2678 ev_view_init (EvView *view)
2679 {
2680         GTK_WIDGET_SET_FLAGS (view, GTK_CAN_FOCUS);
2681
2682         view->spacing = 5;
2683         view->scale = 1.0;
2684         view->current_page = 0;
2685         view->pressed_button = -1;
2686         view->cursor = EV_VIEW_CURSOR_NORMAL;
2687         view->drag_info.in_drag = FALSE;
2688         view->selection_info.selections = NULL;
2689         view->selection_info.in_selection = FALSE;
2690         view->selection_info.in_drag = FALSE;
2691         view->selection_mode = EV_VIEW_SELECTION_TEXT;
2692         view->continuous = TRUE;
2693         view->dual_page = FALSE;
2694         view->presentation = FALSE;
2695         view->fullscreen = FALSE;
2696         view->sizing_mode = EV_SIZING_FIT_WIDTH;
2697         view->pending_scroll = SCROLL_TO_KEEP_POSITION;
2698         view->jump_to_find_result = TRUE;
2699 }
2700
2701 /*** Callbacks ***/
2702
2703 static void
2704 find_changed_cb (EvDocument *document, int page, EvView *view)
2705 {
2706         double percent;
2707         int n_pages;
2708
2709         percent = ev_document_find_get_progress
2710                         (EV_DOCUMENT_FIND (view->document));
2711         n_pages = ev_page_cache_get_n_pages (view->page_cache);
2712
2713         if (view->jump_to_find_result == TRUE) {
2714                 jump_to_find_page (view, EV_VIEW_FIND_NEXT, 0);
2715                 jump_to_find_result (view);
2716         }
2717         update_find_status_message (view, percent * n_pages >= n_pages - 1 );
2718         if (view->current_page == page)
2719                 gtk_widget_queue_draw (GTK_WIDGET (view));
2720 }
2721
2722 static void
2723 job_finished_cb (EvPixbufCache *pixbuf_cache,
2724                  EvView        *view)
2725 {
2726         gtk_widget_queue_draw (GTK_WIDGET (view));
2727 }
2728
2729 static void
2730 page_changed_cb (EvPageCache *page_cache,
2731                  int          new_page,
2732                  EvView      *view)
2733 {
2734         if (view->current_page != new_page) {
2735                 view->current_page = new_page;
2736                 view->pending_scroll = SCROLL_TO_PAGE_POSITION;
2737                 gtk_widget_queue_resize (GTK_WIDGET (view));
2738         } else {
2739                 gtk_widget_queue_draw (GTK_WIDGET (view));
2740         }
2741
2742         if (EV_IS_DOCUMENT_FIND (view->document)) {
2743                 view->find_result = 0;
2744                 update_find_status_message (view, TRUE);
2745         }
2746 }
2747
2748 static void on_adjustment_value_changed (GtkAdjustment  *adjustment,
2749                                          EvView *view)
2750 {
2751         int dx = 0, dy = 0;
2752
2753         if (! GTK_WIDGET_REALIZED (view))
2754                 return;
2755
2756         if (view->hadjustment) {
2757                 dx = view->scroll_x - (int) view->hadjustment->value;
2758                 view->scroll_x = (int) view->hadjustment->value;
2759         } else {
2760                 view->scroll_x = 0;
2761         }
2762
2763         if (view->vadjustment) {
2764                 dy = view->scroll_y - (int) view->vadjustment->value;
2765                 view->scroll_y = (int) view->vadjustment->value;
2766         } else {
2767                 view->scroll_y = 0;
2768         }
2769
2770
2771         if (view->pending_resize)
2772                 gtk_widget_queue_draw (GTK_WIDGET (view));
2773         else
2774                 gdk_window_scroll (GTK_WIDGET (view)->window, dx, dy);
2775
2776
2777         if (view->document)
2778                 view_update_range_and_current_page (view);
2779 }
2780
2781 GtkWidget*
2782 ev_view_new (void)
2783 {
2784         GtkWidget *view;
2785
2786         view = g_object_new (EV_TYPE_VIEW, NULL);
2787
2788         return view;
2789 }
2790
2791 static void
2792 setup_caches (EvView *view)
2793 {
2794         view->page_cache = ev_page_cache_get (view->document);
2795         g_signal_connect (view->page_cache, "page-changed", G_CALLBACK (page_changed_cb), view);
2796         view->pixbuf_cache = ev_pixbuf_cache_new (GTK_WIDGET (view), view->document);
2797         g_signal_connect (view->pixbuf_cache, "job-finished", G_CALLBACK (job_finished_cb), view);
2798 }
2799
2800 static void
2801 clear_caches (EvView *view)
2802 {
2803         if (view->pixbuf_cache) {
2804                 g_object_unref (view->pixbuf_cache);
2805                 view->pixbuf_cache = NULL;
2806         }
2807
2808         if (view->page_cache) {
2809                 view->page_cache = NULL;
2810         }
2811 }
2812
2813 void
2814 ev_view_set_loading (EvView       *view,
2815                      gboolean      loading)
2816 {
2817         view->loading = loading;
2818         gtk_widget_queue_draw (GTK_WIDGET (view));
2819 }
2820
2821 void
2822 ev_view_set_document (EvView     *view,
2823                       EvDocument *document)
2824 {
2825         g_return_if_fail (EV_IS_VIEW (view));
2826
2827         view->loading = FALSE;
2828
2829         if (document != view->document) {
2830                 clear_caches (view);
2831
2832                 if (view->document) {
2833                         g_signal_handlers_disconnect_by_func (view->document,
2834                                                               find_changed_cb,
2835                                                               view);
2836                         g_object_unref (view->document);
2837                         view->page_cache = NULL;
2838
2839                 }
2840
2841                 view->document = document;
2842                 view->find_result = 0;
2843
2844                 if (view->document) {
2845                         g_object_ref (view->document);
2846                         if (EV_IS_DOCUMENT_FIND (view->document)) {
2847                                 g_signal_connect (view->document,
2848                                                   "find_changed",
2849                                                   G_CALLBACK (find_changed_cb),
2850                                                   view);
2851                         }
2852
2853                         setup_caches (view);
2854                 }
2855
2856                 gtk_widget_queue_resize (GTK_WIDGET (view));
2857         }
2858 }
2859
2860 /*** Zoom and sizing mode ***/
2861
2862 #define EPSILON 0.0000001
2863 void
2864 ev_view_set_zoom (EvView   *view,
2865                   double    factor,
2866                   gboolean  relative)
2867 {
2868         double scale;
2869
2870         if (relative)
2871                 scale = view->scale * factor;
2872         else
2873                 scale = factor;
2874
2875         scale = CLAMP (scale, MIN_SCALE, MAX_SCALE);
2876
2877         if (ABS (view->scale - scale) < EPSILON)
2878                 return;
2879
2880         view->scale = scale;
2881         view->pending_resize = TRUE;
2882
2883         gtk_widget_queue_resize (GTK_WIDGET (view));
2884
2885         g_object_notify (G_OBJECT (view), "zoom");
2886 }
2887
2888 double
2889 ev_view_get_zoom (EvView *view)
2890 {
2891         return view->scale;
2892 }
2893
2894 gboolean
2895 ev_view_get_continuous (EvView *view)
2896 {
2897         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
2898
2899         return view->continuous;
2900 }
2901
2902 void
2903 ev_view_set_continuous (EvView   *view,
2904                         gboolean  continuous)
2905 {
2906         g_return_if_fail (EV_IS_VIEW (view));
2907
2908         continuous = continuous != FALSE;
2909
2910         if (view->continuous != continuous) {
2911                 view->continuous = continuous;
2912                 view->pending_scroll = SCROLL_TO_PAGE_POSITION;
2913                 gtk_widget_queue_resize (GTK_WIDGET (view));
2914         }
2915
2916         g_object_notify (G_OBJECT (view), "continuous");
2917 }
2918
2919 gboolean
2920 ev_view_get_dual_page (EvView *view)
2921 {
2922         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
2923
2924         return view->dual_page;
2925 }
2926
2927 void
2928 ev_view_set_dual_page (EvView   *view,
2929                        gboolean  dual_page)
2930 {
2931         g_return_if_fail (EV_IS_VIEW (view));
2932
2933         dual_page = dual_page != FALSE;
2934
2935         if (view->dual_page == dual_page)
2936                 return;
2937
2938         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
2939         view->dual_page = dual_page;
2940         /* FIXME: if we're keeping the pixbuf cache around, we should extend the
2941          * preload_cache_size to be 2 if dual_page is set.
2942          */
2943         gtk_widget_queue_resize (GTK_WIDGET (view));
2944
2945         g_object_notify (G_OBJECT (view), "dual-page");
2946 }
2947
2948 void
2949 ev_view_set_fullscreen (EvView   *view,
2950                          gboolean  fullscreen)
2951 {
2952         g_return_if_fail (EV_IS_VIEW (view));
2953
2954         fullscreen = fullscreen != FALSE;
2955
2956         if (view->fullscreen == fullscreen)
2957                 return;
2958
2959         view->fullscreen = fullscreen;
2960         gtk_widget_queue_resize (GTK_WIDGET (view));
2961
2962         g_object_notify (G_OBJECT (view), "fullscreen");
2963 }
2964
2965 gboolean
2966 ev_view_get_fullscreen (EvView *view)
2967 {
2968         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
2969
2970         return view->fullscreen;
2971 }
2972
2973 void
2974 ev_view_set_presentation (EvView   *view,
2975                           gboolean  presentation)
2976 {
2977         g_return_if_fail (EV_IS_VIEW (view));
2978
2979         presentation = presentation != FALSE;
2980
2981         if (view->presentation == presentation)
2982                 return;
2983
2984         view->presentation = presentation;
2985         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
2986         gtk_widget_queue_resize (GTK_WIDGET (view));
2987
2988         if (GTK_WIDGET_REALIZED (view)) {
2989                 if (view->presentation)
2990                         gdk_window_set_background (GTK_WIDGET(view)->window,
2991                                                    &GTK_WIDGET (view)->style->black);
2992                 else
2993                         gdk_window_set_background (GTK_WIDGET(view)->window,
2994                                                    &GTK_WIDGET (view)->style->mid [GTK_STATE_NORMAL]);
2995         }
2996
2997
2998         g_object_notify (G_OBJECT (view), "presentation");
2999 }
3000
3001 gboolean
3002 ev_view_get_presentation (EvView *view)
3003 {
3004         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
3005
3006         return view->presentation;
3007 }
3008
3009 void
3010 ev_view_set_sizing_mode (EvView       *view,
3011                          EvSizingMode  sizing_mode)
3012 {
3013         g_return_if_fail (EV_IS_VIEW (view));
3014
3015         if (view->sizing_mode == sizing_mode)
3016                 return;
3017
3018         view->sizing_mode = sizing_mode;
3019         gtk_widget_queue_resize (GTK_WIDGET (view));
3020
3021         g_object_notify (G_OBJECT (view), "sizing-mode");
3022 }
3023
3024 EvSizingMode
3025 ev_view_get_sizing_mode (EvView *view)
3026 {
3027         g_return_val_if_fail (EV_IS_VIEW (view), EV_SIZING_FREE);
3028
3029         return view->sizing_mode;
3030 }
3031
3032 gboolean
3033 ev_view_can_zoom_in (EvView *view)
3034 {
3035         return view->scale * ZOOM_IN_FACTOR <= MAX_SCALE;
3036 }
3037
3038 gboolean
3039 ev_view_can_zoom_out (EvView *view)
3040 {
3041         return view->scale * ZOOM_OUT_FACTOR >= MIN_SCALE;
3042 }
3043
3044 void
3045 ev_view_zoom_in (EvView *view)
3046 {
3047         g_return_if_fail (view->sizing_mode == EV_SIZING_FREE);
3048
3049         view->pending_scroll = SCROLL_TO_CENTER;
3050         ev_view_set_zoom (view, ZOOM_IN_FACTOR, TRUE);
3051 }
3052
3053 void
3054 ev_view_zoom_out (EvView *view)
3055 {
3056         g_return_if_fail (view->sizing_mode == EV_SIZING_FREE);
3057
3058         view->pending_scroll = SCROLL_TO_CENTER;
3059         ev_view_set_zoom (view, ZOOM_OUT_FACTOR, TRUE);
3060 }
3061
3062 void
3063 ev_view_rotate_right (EvView *view)
3064 {
3065         int rotation = view->rotation + 90;
3066
3067         if (rotation >= 360) {
3068                 rotation -= 360;
3069         }
3070
3071         ev_view_set_rotation (view, rotation);
3072 }
3073
3074 void
3075 ev_view_rotate_left (EvView *view)
3076 {
3077         int rotation = view->rotation - 90;
3078
3079         if (rotation < 0) {
3080                 rotation += 360;
3081         }
3082
3083         ev_view_set_rotation (view, rotation);
3084 }
3085
3086 void
3087 ev_view_set_rotation (EvView *view, int rotation)
3088 {
3089         view->rotation = rotation;
3090
3091         if (view->pixbuf_cache) {
3092                 ev_pixbuf_cache_clear (view->pixbuf_cache);
3093                 gtk_widget_queue_resize (GTK_WIDGET (view));
3094         }
3095
3096         if (rotation != 0)
3097                 clear_selection (view);
3098
3099         g_object_notify (G_OBJECT (view), "rotation");
3100 }
3101
3102 int
3103 ev_view_get_rotation (EvView *view)
3104 {
3105         return view->rotation;
3106 }
3107
3108 static double
3109 zoom_for_size_fit_width (int doc_width,
3110                          int doc_height,
3111                          int target_width,
3112                          int target_height,
3113                          int vsb_width)
3114 {
3115         double scale;
3116
3117         scale = (double)target_width / doc_width;
3118
3119         if (doc_height * scale > target_height)
3120                 scale = (double) (target_width - vsb_width) / doc_width;
3121
3122         return scale;
3123 }
3124
3125 static double
3126 zoom_for_size_fit_height (int doc_width,
3127                           int doc_height,
3128                           int target_width,
3129                           int target_height,
3130                           int vsb_height)
3131 {
3132         double scale;
3133
3134         scale = (double)target_height / doc_height;
3135
3136         if (doc_width * scale > target_width)
3137                 scale = (double) (target_height - vsb_height) / doc_height;
3138
3139         return scale;
3140 }
3141
3142 static double
3143 zoom_for_size_best_fit (int doc_width,
3144                         int doc_height,
3145                         int target_width,
3146                         int target_height,
3147                         int vsb_width,
3148                         int hsb_width)
3149 {
3150         double w_scale;
3151         double h_scale;
3152
3153         w_scale = (double)target_width / doc_width;
3154         h_scale = (double)target_height / doc_height;
3155
3156         if (doc_height * w_scale > target_height)
3157                 w_scale = (double) (target_width - vsb_width) / doc_width;
3158         if (doc_width * h_scale > target_width)
3159                 h_scale = (double) (target_height - hsb_width) / doc_height;
3160
3161         return MIN (w_scale, h_scale);
3162 }
3163
3164
3165 static void
3166 ev_view_zoom_for_size_presentation (EvView *view,
3167                                     int     width,
3168                                     int     height)
3169 {
3170         int doc_width, doc_height;
3171         gdouble scale;
3172
3173         ev_page_cache_get_size (view->page_cache,
3174                                 view->current_page,
3175                                 view->rotation,
3176                                 1.0,
3177                                 &doc_width,
3178                                 &doc_height);
3179         scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, 0, 0);
3180         ev_view_set_zoom (view, scale, FALSE);
3181 }
3182
3183 static void
3184 ev_view_zoom_for_size_continuous_and_dual_page (EvView *view,
3185                            int     width,
3186                            int     height,
3187                            int     vsb_width,
3188                            int     hsb_height)
3189 {
3190         int doc_width, doc_height;
3191         GtkBorder border;
3192         gdouble scale;
3193
3194         ev_page_cache_get_max_width (view->page_cache,
3195                                      view->rotation,
3196                                      1.0,
3197                                      &doc_width);
3198         ev_page_cache_get_max_height (view->page_cache,
3199                                       view->rotation,
3200                                       1.0,
3201                                       &doc_height);
3202         compute_border (view, doc_width, doc_height, &border);
3203
3204         doc_width = doc_width * 2;
3205         width -= (2 * (border.left + border.right) + 3 * view->spacing);
3206         height -= (border.top + border.bottom + 2 * view->spacing - 1);
3207
3208         /* FIXME: We really need to calculate the overall height here, not the
3209          * page height.  We assume there's always a vertical scrollbar for
3210          * now.  We need to fix this. */
3211         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
3212                 scale = zoom_for_size_fit_width (doc_width, doc_height, width - vsb_width, height, 0);
3213         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
3214                 scale = zoom_for_size_best_fit (doc_width, doc_height, width - vsb_width, height, 0, hsb_height);
3215         else
3216                 g_assert_not_reached ();
3217
3218         ev_view_set_zoom (view, scale, FALSE);
3219 }
3220
3221 static void
3222 ev_view_zoom_for_size_continuous (EvView *view,
3223                                   int     width,
3224                                   int     height,
3225                                   int     vsb_width,
3226                                   int     hsb_height)
3227 {
3228         int doc_width, doc_height;
3229         GtkBorder border;
3230         gdouble scale;
3231
3232         ev_page_cache_get_max_width (view->page_cache,
3233                                      view->rotation,
3234                                      1.0,
3235                                      &doc_width);
3236         ev_page_cache_get_max_height (view->page_cache,
3237                                       view->rotation,
3238                                       1.0,
3239                                       &doc_height);
3240         compute_border (view, doc_width, doc_height, &border);
3241
3242         width -= (border.left + border.right + 2 * view->spacing);
3243         height -= (border.top + border.bottom + 2 * view->spacing - 1);
3244
3245         /* FIXME: We really need to calculate the overall height here, not the
3246          * page height.  We assume there's always a vertical scrollbar for
3247          * now.  We need to fix this. */
3248         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
3249                 scale = zoom_for_size_fit_width (doc_width, doc_height, width - vsb_width, height, 0);
3250         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
3251                 scale = zoom_for_size_best_fit (doc_width, doc_height, width - vsb_width, height, 0, hsb_height);
3252         else
3253                 g_assert_not_reached ();
3254
3255         ev_view_set_zoom (view, scale, FALSE);
3256 }
3257
3258 static void
3259 ev_view_zoom_for_size_dual_page (EvView *view,
3260                                  int     width,
3261                                  int     height,
3262                                  int     vsb_width,
3263                                  int     hsb_height)
3264 {
3265         GtkBorder border;
3266         gint doc_width, doc_height;
3267         gdouble scale;
3268         gint other_page;
3269
3270         other_page = view->current_page ^ 1;
3271
3272         /* Find the largest of the two. */
3273         ev_page_cache_get_size (view->page_cache,
3274                                 view->current_page,
3275                                 view->rotation,
3276                                 1.0,
3277                                 &doc_width, &doc_height);
3278
3279         if (other_page < ev_page_cache_get_n_pages (view->page_cache)) {
3280                 gint width_2, height_2;
3281                 ev_page_cache_get_size (view->page_cache,
3282                                         other_page,
3283                                         view->rotation,
3284                                         1.0,
3285                                         &width_2, &height_2);
3286                 if (width_2 > doc_width)
3287                         doc_width = width_2;
3288                 if (height_2 > doc_height)
3289                         doc_height = height_2;
3290         }
3291         compute_border (view, doc_width, doc_height, &border);
3292
3293         doc_width = doc_width * 2;
3294         width -= ((border.left + border.right)* 2 + 3 * view->spacing);
3295         height -= (border.top + border.bottom + 2 * view->spacing);
3296
3297         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
3298                 scale = zoom_for_size_fit_width (doc_width, doc_height, width, height, vsb_width);
3299         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
3300                 scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, vsb_width, hsb_height);
3301         else
3302                 g_assert_not_reached ();
3303
3304         ev_view_set_zoom (view, scale, FALSE);
3305 }
3306
3307 static void
3308 ev_view_zoom_for_size_single_page (EvView *view,
3309                                    int     width,
3310                                    int     height,
3311                                    int     vsb_width,
3312                                    int     hsb_height)
3313 {
3314         int doc_width, doc_height;
3315         GtkBorder border;
3316         gdouble scale;
3317
3318         ev_page_cache_get_size (view->page_cache,
3319                                 view->current_page,
3320                                 view->rotation,
3321                                 1.0,
3322                                 &doc_width,
3323                                 &doc_height);
3324         /* Get an approximate border */
3325         compute_border (view, width, height, &border);
3326
3327         width -= (border.left + border.right + 2 * view->spacing);
3328         height -= (border.top + border.bottom + 2 * view->spacing);
3329
3330         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
3331                 scale = zoom_for_size_fit_width (doc_width, doc_height, width, height, vsb_width);
3332         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
3333                 scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, vsb_width, hsb_height);
3334         else
3335                 g_assert_not_reached ();
3336
3337         ev_view_set_zoom (view, scale, FALSE);
3338 }
3339
3340 void
3341 ev_view_set_zoom_for_size (EvView *view,
3342                            int     width,
3343                            int     height,
3344                            int     vsb_width,
3345                            int     hsb_height)
3346 {
3347         g_return_if_fail (view->sizing_mode == EV_SIZING_FIT_WIDTH ||
3348                           view->sizing_mode == EV_SIZING_BEST_FIT);
3349         g_return_if_fail (width >= 0);
3350         g_return_if_fail (height >= 0);
3351
3352         if (view->document == NULL)
3353                 return;
3354
3355         if (view->presentation)
3356                 ev_view_zoom_for_size_presentation (view, width, height);
3357         else if (view->continuous && view->dual_page)
3358                 ev_view_zoom_for_size_continuous_and_dual_page (view, width, height, vsb_width, hsb_height);
3359         else if (view->continuous)
3360                 ev_view_zoom_for_size_continuous (view, width, height, vsb_width, hsb_height);
3361         else if (view->dual_page)
3362                 ev_view_zoom_for_size_dual_page (view, width, height, vsb_width, hsb_height);
3363         else
3364                 ev_view_zoom_for_size_single_page (view, width, height, vsb_width, hsb_height);
3365 }
3366
3367 /*** Status text messages ***/
3368
3369 const char *
3370 ev_view_get_status (EvView *view)
3371 {
3372         g_return_val_if_fail (EV_IS_VIEW (view), NULL);
3373
3374         return view->status;
3375 }
3376
3377 static void
3378 ev_view_set_status (EvView *view, const char *message)
3379 {
3380         g_return_if_fail (EV_IS_VIEW (view));
3381
3382         if (message != view->status) {
3383                 g_free (view->status);
3384                 view->status = g_strdup (message);
3385                 g_object_notify (G_OBJECT (view), "status");
3386         }
3387 }
3388
3389 static void
3390 update_find_status_message (EvView *view, gboolean this_page)
3391 {
3392         char *message;
3393
3394         if (this_page) {
3395                 int results;
3396
3397                 results = ev_document_find_get_n_results
3398                                 (EV_DOCUMENT_FIND (view->document),
3399                                  view->current_page);
3400                 /* TRANS: Sometimes this could be better translated as
3401                    "%d hit(s) on this page".  Therefore this string
3402                    contains plural cases. */
3403                 message = g_strdup_printf (ngettext ("%d found on this page",
3404                                                      "%d found on this page",
3405                                                      results),
3406                                            results);
3407         } else {
3408                 double percent;
3409
3410                 percent = ev_document_find_get_progress
3411                                 (EV_DOCUMENT_FIND (view->document));
3412                 message = g_strdup_printf (_("%3d%% remaining to search"),
3413                                            (int) ((1.0 - percent) * 100));
3414
3415         }
3416         ev_view_set_find_status (view, message);
3417         g_free (message);
3418 }
3419
3420 const char *
3421 ev_view_get_find_status (EvView *view)
3422 {
3423         g_return_val_if_fail (EV_IS_VIEW (view), NULL);
3424
3425         return view->find_status;
3426 }
3427
3428 static void
3429 ev_view_set_find_status (EvView *view, const char *message)
3430 {
3431         g_return_if_fail (EV_IS_VIEW (view));
3432
3433         g_free (view->find_status);
3434         view->find_status = g_strdup (message);
3435         g_object_notify (G_OBJECT (view), "find-status");
3436 }
3437
3438 /*** Find ***/
3439
3440 static void
3441 jump_to_find_result (EvView *view)
3442 {
3443         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
3444         EvRectangle rect;
3445         GdkRectangle view_rect;
3446         int n_results;
3447         int page = view->current_page;
3448
3449         n_results = ev_document_find_get_n_results (find, page);
3450
3451         if (n_results > 0  && view->find_result < n_results) {
3452                 ev_document_find_get_result
3453                         (find, page, view->find_result, &rect);
3454
3455                 doc_rect_to_view_rect (view, page, &rect, &view_rect);
3456                 ensure_rectangle_is_visible (view, &view_rect);
3457         }
3458 }
3459
3460 /**
3461  * jump_to_find_page
3462  * @view: #EvView instance
3463  * @direction: Direction to look
3464  * @shift: Shift from current page
3465  *
3466  * Jumps to the first page that has occurences of searched word.
3467  * Uses a direction where to look and a shift from current page.
3468  *
3469  */
3470 static void
3471 jump_to_find_page (EvView *view, EvViewFindDirection direction, gint shift)
3472 {
3473         int n_pages, i;
3474
3475         n_pages = ev_page_cache_get_n_pages (view->page_cache);
3476
3477         for (i = 0; i < n_pages; i++) {
3478                 int has_results;
3479                 int page;
3480
3481                 if (direction == EV_VIEW_FIND_NEXT)
3482                         page = view->current_page + i;
3483                 else
3484                         page = view->current_page - i;
3485                 page += shift;
3486
3487                 if (page >= n_pages) {
3488                         page = page - n_pages;
3489                 }
3490                 if (page < 0)
3491                         page = page + n_pages;
3492
3493                 has_results = ev_document_find_page_has_results
3494                                 (EV_DOCUMENT_FIND (view->document), page);
3495                 if (has_results == -1) {
3496                         break;
3497                 } else if (has_results == 1) {
3498                         ev_page_cache_set_current_page (view->page_cache, page);
3499                         break;
3500                 }
3501         }
3502 }
3503
3504 gboolean
3505 ev_view_can_find_next (EvView *view)
3506 {
3507         if (EV_IS_DOCUMENT_FIND (view->document)) {
3508                 EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
3509                 int i, n_pages;
3510
3511                 n_pages = ev_page_cache_get_n_pages (view->page_cache);
3512                 for (i = 0; i < n_pages; i++) {
3513                         if (ev_document_find_get_n_results (find, i) > 0) {
3514                                 return TRUE;
3515                         }
3516                 }
3517         }
3518
3519         return FALSE;
3520 }
3521
3522 void
3523 ev_view_find_next (EvView *view)
3524 {
3525         int n_results, n_pages;
3526         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
3527
3528         n_results = ev_document_find_get_n_results (find, view->current_page);
3529
3530         n_pages = ev_page_cache_get_n_pages (view->page_cache);
3531
3532         view->find_result++;
3533
3534         if (view->find_result >= n_results) {
3535
3536                 view->find_result = 0;
3537                 jump_to_find_page (view, EV_VIEW_FIND_NEXT, 1);
3538                 jump_to_find_result (view);
3539         } else {
3540                 jump_to_find_result (view);
3541                 gtk_widget_queue_draw (GTK_WIDGET (view));
3542         }
3543 }
3544
3545 gboolean
3546 ev_view_can_find_previous (EvView *view)
3547 {
3548         if (EV_IS_DOCUMENT_FIND (view->document)) {
3549                 EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
3550                 int i, n_pages;
3551
3552                 n_pages = ev_page_cache_get_n_pages (view->page_cache);
3553                 for (i = n_pages - 1; i >= 0; i--) {
3554                         if (ev_document_find_get_n_results (find, i) > 0) {
3555                                 return TRUE;
3556                         }
3557                 }
3558         }
3559
3560         return FALSE;
3561 }
3562 void
3563 ev_view_find_previous (EvView *view)
3564 {
3565         int n_results, n_pages;
3566         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
3567         EvPageCache *page_cache;
3568
3569         page_cache = ev_page_cache_get (view->document);
3570
3571         n_results = ev_document_find_get_n_results (find, view->current_page);
3572
3573         n_pages = ev_page_cache_get_n_pages (page_cache);
3574
3575         view->find_result--;
3576
3577         if (view->find_result < 0) {
3578
3579                 jump_to_find_page (view, EV_VIEW_FIND_PREV, -1);
3580                 view->find_result = ev_document_find_get_n_results (find, view->current_page) - 1;
3581                 jump_to_find_result (view);
3582         } else {
3583                 jump_to_find_result (view);
3584                 gtk_widget_queue_draw (GTK_WIDGET (view));
3585         }
3586 }
3587
3588 void ev_view_search_changed (EvView *view)
3589 {
3590         /* search string has changed, focus on new search result */
3591         view->jump_to_find_result = TRUE;
3592 }
3593
3594 /*** Selections ***/
3595
3596 /* compute_new_selection_rect/text calculates the area currently selected by
3597  * view_rect.  each handles a different mode;
3598  */
3599 static GList *
3600 compute_new_selection_rect (EvView       *view,
3601                             GdkPoint     *start,
3602                             GdkPoint     *stop)
3603 {
3604         GdkRectangle view_rect;
3605         int n_pages, i;
3606         GList *list = NULL;
3607
3608         g_assert (view->selection_mode == EV_VIEW_SELECTION_RECTANGLE);
3609
3610         view_rect.x = MIN (start->x, stop->x);
3611         view_rect.y = MIN (start->y, stop->y);
3612         view_rect.width = MAX (start->x, stop->x) - view_rect.x;
3613         view_rect.width = MAX (start->y, stop->y) - view_rect.y;
3614
3615         n_pages = ev_page_cache_get_n_pages (view->page_cache);
3616
3617         for (i = 0; i < n_pages; i++) {
3618                 GdkRectangle page_area;
3619                 GtkBorder border;
3620
3621                 if (get_page_extents (view, i, &page_area, &border)) {
3622                         GdkRectangle overlap;
3623
3624                         if (gdk_rectangle_intersect (&page_area, &view_rect, &overlap)) {
3625                                 EvViewSelection *selection;
3626
3627                                 selection = g_new0 (EvViewSelection, 1);
3628                                 selection->page = i;
3629                                 view_rect_to_doc_rect (view, &overlap, &page_area,
3630                                                        &(selection->rect));
3631
3632                                 list = g_list_append (list, selection);
3633                         }
3634                 }
3635         }
3636
3637         return list;
3638 }
3639
3640 static gboolean
3641 gdk_rectangle_point_in (GdkRectangle *rectangle,
3642                         GdkPoint     *point)
3643 {
3644         return rectangle->x <= point->x &&
3645                 rectangle->y <= point->y &&
3646                 point->x < rectangle->x + rectangle->width &&
3647                 point->y < rectangle->y + rectangle->height;
3648 }
3649
3650 static GList *
3651 compute_new_selection_text (EvView   *view,
3652                             GdkPoint *start,
3653                             GdkPoint *stop)
3654 {
3655         int n_pages, i, first, last;
3656         GList *list = NULL;
3657         EvViewSelection *selection;
3658         gint width, height;
3659         int start_page, end_page;
3660
3661         g_assert (view->selection_mode == EV_VIEW_SELECTION_TEXT);
3662
3663         n_pages = ev_page_cache_get_n_pages (view->page_cache);
3664
3665         /* First figure out the range of pages the selection
3666          * affects. */
3667         first = n_pages;
3668         last = 0;
3669         if (view->continuous) {
3670                 start_page = 0;
3671                 end_page = n_pages;
3672         } else if (view->dual_page) {
3673                 start_page = view->start_page;
3674                 end_page = view->end_page + 1;
3675         } else {
3676                 start_page = view->current_page;
3677                 end_page = view->current_page + 1;
3678         }
3679
3680         for (i = start_page; i < end_page; i++) {
3681                 GdkRectangle page_area;
3682                 GtkBorder border;
3683
3684                 get_page_extents (view, i, &page_area, &border);
3685                 if (gdk_rectangle_point_in (&page_area, start) ||
3686                     gdk_rectangle_point_in (&page_area, stop)) {
3687                         if (first == n_pages)
3688                                 first = i;
3689                         last = i;
3690                 }
3691
3692         }
3693
3694
3695
3696         /* Now create a list of EvViewSelection's for the affected
3697          * pages.  This could be an empty list, a list of just one
3698          * page or a number of pages.*/
3699         for (i = first; i < last + 1; i++) {
3700                 GdkRectangle page_area;
3701                 GtkBorder border;
3702                 GdkPoint *point;
3703
3704                 ev_page_cache_get_size (view->page_cache, i,
3705                                         view->rotation,
3706                                         1.0, &width, &height);
3707
3708                 selection = g_new0 (EvViewSelection, 1);
3709                 selection->page = i;
3710                 selection->rect.x1 = selection->rect.y1 = 0;
3711                 selection->rect.x2 = width;
3712                 selection->rect.y2 = height;
3713
3714                 get_page_extents (view, i, &page_area, &border);
3715
3716                 if (gdk_rectangle_point_in (&page_area, start))
3717                         point = start;
3718                 else
3719                         point = stop;
3720
3721                 if (i == first)
3722                         view_point_to_doc_point (view, point, &page_area,
3723                                                  &selection->rect.x1,
3724                                                  &selection->rect.y1);
3725
3726                 /* If the selection is contained within just one page,
3727                  * make sure we don't write 'start' into both points
3728                  * in selection->rect. */
3729                 if (first == last)
3730                         point = stop;
3731
3732                 if (i == last)
3733                         view_point_to_doc_point (view, point, &page_area,
3734                                                  &selection->rect.x2,
3735                                                  &selection->rect.y2);
3736
3737                 list = g_list_append (list, selection);
3738         }
3739
3740         return list;
3741 }
3742
3743 /* This function takes the newly calculated list, and figures out which regions
3744  * have changed.  It then queues a redraw approporiately.
3745  */
3746 static void
3747 merge_selection_region (EvView *view,
3748                         GList  *new_list)
3749 {
3750         GList *old_list;
3751         GList *new_list_ptr, *old_list_ptr;
3752
3753         /* Update the selection */
3754         old_list = ev_pixbuf_cache_get_selection_list (view->pixbuf_cache);
3755         g_list_foreach (view->selection_info.selections, (GFunc)selection_free, NULL);
3756         view->selection_info.selections = new_list;
3757         ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, new_list);
3758         g_object_notify (G_OBJECT (view), "has-selection");
3759
3760         new_list_ptr = new_list;
3761         old_list_ptr = old_list;
3762
3763         while (new_list_ptr || old_list_ptr) {
3764                 EvViewSelection *old_sel, *new_sel;
3765                 int cur_page;
3766                 GdkRegion *region = NULL;
3767
3768                 new_sel = (new_list_ptr) ? (new_list_ptr->data) : NULL;
3769                 old_sel = (old_list_ptr) ? (old_list_ptr->data) : NULL;
3770
3771                 /* Assume that the lists are in order, and we run through them
3772                  * comparing them, one page at a time.  We come out with the
3773                  * first page we see. */
3774                 if (new_sel && old_sel) {
3775                         if (new_sel->page < old_sel->page) {
3776                                 new_list_ptr = new_list_ptr->next;
3777                                 old_sel = NULL;
3778                         } else if (new_sel->page > old_sel->page) {
3779                                 old_list_ptr = old_list_ptr->next;
3780                                 new_sel = NULL;
3781                         } else {
3782                                 new_list_ptr = new_list_ptr->next;
3783                                 old_list_ptr = old_list_ptr->next;
3784                         }
3785                 } else if (new_sel) {
3786                         new_list_ptr = new_list_ptr->next;
3787                 } else if (old_sel) {
3788                         old_list_ptr = old_list_ptr->next;
3789                 }
3790
3791                 g_assert (new_sel || old_sel);
3792
3793                 /* is the page we're looking at on the screen?*/
3794                 cur_page = new_sel ? new_sel->page : old_sel->page;
3795                 if (cur_page < view->start_page || cur_page > view->end_page)
3796                         continue;
3797
3798                 /* seed the cache with a new page.  We are going to need the new
3799                  * region too. */
3800                 if (new_sel) {
3801                         GdkRegion *tmp_region = NULL;
3802                         ev_pixbuf_cache_get_selection_pixbuf (view->pixbuf_cache,
3803                                                               cur_page,
3804                                                               view->scale,
3805                                                               &tmp_region);
3806                         if (tmp_region) {
3807                                 new_sel->covered_region = gdk_region_copy (tmp_region);
3808                         }
3809                 }
3810
3811                 /* Now we figure out what needs redrawing */
3812                 if (old_sel && new_sel) {
3813                         if (old_sel->covered_region &&
3814                             new_sel->covered_region) {
3815                                 /* We only want to redraw the areas that have
3816                                  * changed, so we xor the old and new regions
3817                                  * and redraw if it's different */
3818                                 region = gdk_region_copy (old_sel->covered_region);
3819                                 gdk_region_xor (region, new_sel->covered_region);
3820                                 if (gdk_region_empty (region)) {
3821                                         gdk_region_destroy (region);
3822                                         region = NULL;
3823                                 }
3824                         } else if (old_sel->covered_region) {
3825                                 region = gdk_region_copy (old_sel->covered_region);
3826                         } else if (new_sel->covered_region) {
3827                                 region = gdk_region_copy (new_sel->covered_region);
3828                         }
3829                 } else if (old_sel && !new_sel) {
3830                         if (old_sel->covered_region && !gdk_region_empty (old_sel->covered_region)) {
3831                                 region = gdk_region_copy (old_sel->covered_region);
3832                         }
3833                 } else if (!old_sel && new_sel) {
3834                         if (new_sel->covered_region && !gdk_region_empty (new_sel->covered_region)) {
3835                                 region = gdk_region_copy (new_sel->covered_region);
3836                         }
3837                 } else {
3838                         g_assert_not_reached ();
3839                 }
3840
3841                 /* Redraw the damaged region! */
3842                 if (region) {
3843                         GdkRectangle page_area;
3844                         GtkBorder border;
3845
3846                         get_page_extents (view, cur_page, &page_area, &border);
3847                         gdk_region_offset (region,
3848                                            page_area.x + border.left - view->scroll_x,
3849                                            page_area.y + border.top - view->scroll_y);
3850                         gdk_window_invalidate_region (GTK_WIDGET (view)->window, region, TRUE);
3851                         gdk_region_destroy (region);
3852                 }
3853         }
3854
3855         /* Free the old list, now that we're done with it. */
3856         g_list_foreach (old_list, (GFunc) selection_free, NULL);
3857 }
3858
3859 static void
3860 compute_selections (EvView   *view,
3861                     GdkPoint *start,
3862                     GdkPoint *stop)
3863 {
3864         GList *list;
3865
3866         if (view->selection_mode == EV_VIEW_SELECTION_RECTANGLE)
3867                 list = compute_new_selection_rect (view, start, stop);
3868         else
3869                 list = compute_new_selection_text (view, start, stop);
3870         merge_selection_region (view, list);
3871 }
3872
3873 /* Free's the selection.  It's up to the caller to queue redraws if needed.
3874  */
3875 static void
3876 selection_free (EvViewSelection *selection)
3877 {
3878         if (selection->covered_region)
3879                 gdk_region_destroy (selection->covered_region);
3880         g_free (selection);
3881 }
3882
3883 static void
3884 clear_selection (EvView *view)
3885 {
3886         g_list_foreach (view->selection_info.selections, (GFunc)selection_free, NULL);
3887         view->selection_info.selections = NULL;
3888         view->selection_info.in_selection = FALSE;
3889         g_object_notify (G_OBJECT (view), "has-selection");
3890 }
3891
3892
3893 void
3894 ev_view_select_all (EvView *view)
3895 {
3896         int n_pages, i;
3897
3898         /* Disable selection on rotated pages for the 0.4.0 series */
3899         if (view->rotation != 0)
3900                 return;
3901
3902         clear_selection (view);
3903
3904         n_pages = ev_page_cache_get_n_pages (view->page_cache);
3905         for (i = 0; i < n_pages; i++) {
3906                 int width, height;
3907                 EvViewSelection *selection;
3908
3909                 ev_page_cache_get_size (view->page_cache,
3910                                         i,
3911                                         view->rotation,
3912                                         1.0, &width, &height);
3913
3914                 selection = g_new0 (EvViewSelection, 1);
3915                 selection->page = i;
3916                 selection->rect.x1 = selection->rect.y1 = 0;
3917                 selection->rect.x2 = width;
3918                 selection->rect.y2 = height;
3919
3920                 view->selection_info.selections = g_list_append (view->selection_info.selections, selection);
3921         }
3922
3923         ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, view->selection_info.selections);
3924         g_object_notify (G_OBJECT (view), "has-selection");
3925         gtk_widget_queue_draw (GTK_WIDGET (view));
3926 }
3927
3928 gboolean
3929 ev_view_get_has_selection (EvView *view)
3930 {
3931         return view->selection_info.selections != NULL;
3932 }
3933
3934 static char *
3935 get_selected_text (EvView *ev_view)
3936 {
3937         GString *text;
3938         GList *l;
3939
3940         text = g_string_new (NULL);
3941
3942         ev_document_doc_mutex_lock ();
3943
3944         for (l = ev_view->selection_info.selections; l != NULL; l = l->next) {
3945                 EvViewSelection *selection = (EvViewSelection *)l->data;
3946                 char *tmp;
3947
3948                 tmp = ev_document_get_text (ev_view->document,
3949                                             selection->page,
3950                                             &selection->rect);
3951                 g_string_append (text, tmp);
3952                 g_free (tmp);
3953         }
3954
3955         ev_document_doc_mutex_unlock ();
3956
3957         return g_string_free (text, FALSE);
3958 }
3959
3960 void
3961 ev_view_copy (EvView *ev_view)
3962 {
3963         GtkClipboard *clipboard;
3964         char *text;
3965
3966         if (!ev_document_can_get_text (ev_view->document)) {
3967                 return;
3968         }
3969
3970         text = get_selected_text (ev_view);
3971         clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view),
3972                                               GDK_SELECTION_CLIPBOARD);
3973         gtk_clipboard_set_text (clipboard, text, -1);
3974         g_free (text);
3975 }
3976
3977 static void
3978 ev_view_primary_get_cb (GtkClipboard     *clipboard,
3979                         GtkSelectionData *selection_data,
3980                         guint             info,
3981                         gpointer          data)
3982 {
3983         EvView *ev_view = EV_VIEW (data);
3984         char *text;
3985
3986         if (!ev_document_can_get_text (ev_view->document)) {
3987                 return;
3988         }
3989
3990         text = get_selected_text (ev_view);
3991         gtk_selection_data_set_text (selection_data, text, -1);
3992         g_free (text);
3993 }
3994
3995 static void
3996 ev_view_primary_clear_cb (GtkClipboard *clipboard,
3997                           gpointer      data)
3998 {
3999         EvView *view = EV_VIEW (data);
4000
4001         clear_selection (view);
4002 }
4003
4004 static void
4005 ev_view_update_primary_selection (EvView *ev_view)
4006 {
4007         GtkClipboard *clipboard;
4008
4009         clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view),
4010                                               GDK_SELECTION_PRIMARY);
4011
4012         if (ev_view->selection_info.selections) {
4013                 if (!gtk_clipboard_set_with_owner (clipboard,
4014                                                    targets,
4015                                                    G_N_ELEMENTS (targets),
4016                                                    ev_view_primary_get_cb,
4017                                                    ev_view_primary_clear_cb,
4018                                                    G_OBJECT (ev_view)))
4019                         ev_view_primary_clear_cb (clipboard, ev_view);
4020         } else {
4021                 if (gtk_clipboard_get_owner (clipboard) == G_OBJECT (ev_view))
4022                         gtk_clipboard_clear (clipboard);
4023         }
4024 }
4025
4026 /*** Cursor operations ***/
4027
4028 static GdkCursor *
4029 ev_view_create_invisible_cursor(void)
4030 {
4031        GdkBitmap *empty;
4032        GdkColor black = { 0, 0, 0, 0 };
4033        static char bits[] = { 0x00 };
4034
4035        empty = gdk_bitmap_create_from_data (NULL, bits, 1, 1);
4036
4037        return gdk_cursor_new_from_pixmap (empty, empty, &black, &black, 0, 0);
4038 }
4039
4040 static void
4041 ev_view_set_cursor (EvView *view, EvViewCursor new_cursor)
4042 {
4043         GdkCursor *cursor = NULL;
4044         GdkDisplay *display;
4045         GtkWidget *widget;
4046
4047         if (view->cursor == new_cursor) {
4048                 return;
4049         }
4050
4051         widget = gtk_widget_get_toplevel (GTK_WIDGET (view));
4052         display = gtk_widget_get_display (widget);
4053         view->cursor = new_cursor;
4054
4055         switch (new_cursor) {
4056                 case EV_VIEW_CURSOR_NORMAL:
4057                         gdk_window_set_cursor (widget->window, NULL);
4058                         break;
4059                 case EV_VIEW_CURSOR_IBEAM:
4060                         cursor = gdk_cursor_new_for_display (display, GDK_XTERM);
4061                         break;
4062                 case EV_VIEW_CURSOR_LINK:
4063                         cursor = gdk_cursor_new_for_display (display, GDK_HAND2);
4064                         break;
4065                 case EV_VIEW_CURSOR_WAIT:
4066                         cursor = gdk_cursor_new_for_display (display, GDK_WATCH);
4067                         break;
4068                 case EV_VIEW_CURSOR_HIDDEN:
4069                         cursor = ev_view_create_invisible_cursor ();
4070                         break;
4071                 case EV_VIEW_CURSOR_DRAG:
4072                         cursor = gdk_cursor_new_for_display (display, GDK_FLEUR);
4073                         break;
4074         }
4075
4076         if (cursor) {
4077                 gdk_window_set_cursor (widget->window, cursor);
4078                 gdk_cursor_unref (cursor);
4079                 gdk_flush();
4080         }
4081 }
4082
4083 void
4084 ev_view_hide_cursor (EvView *view)
4085 {
4086        ev_view_set_cursor (view, EV_VIEW_CURSOR_HIDDEN);
4087 }
4088
4089 void
4090 ev_view_show_cursor (EvView *view)
4091 {
4092        ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
4093 }
4094
4095 gboolean
4096 ev_view_next_page (EvView *view)
4097 {
4098         int page;
4099
4100         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
4101
4102         page = ev_page_cache_get_current_page (view->page_cache);
4103
4104         if (view->dual_page && !view->presentation)
4105                 page = page + 2;
4106         else
4107                 page = page + 1;
4108
4109         if (page < ev_page_cache_get_n_pages (view->page_cache)) {
4110                 ev_page_cache_set_current_page (view->page_cache, page);
4111                 return TRUE;
4112         } else if (ev_view_get_dual_page (view) && page == ev_page_cache_get_n_pages (view->page_cache)) {
4113                 ev_page_cache_set_current_page (view->page_cache, page - 1);
4114                 return TRUE;
4115         } else {
4116                 return FALSE;
4117         }
4118 }
4119
4120 gboolean
4121 ev_view_previous_page (EvView *view)
4122 {
4123         int page;
4124
4125         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
4126
4127         page = ev_page_cache_get_current_page (view->page_cache);
4128
4129         if (view->dual_page && !view->presentation)
4130                 page = page - 2;
4131         else
4132                 page = page - 1;
4133
4134         if (page >= 0) {
4135                 ev_page_cache_set_current_page (view->page_cache, page);
4136                 return TRUE;
4137         } else if (ev_view_get_dual_page (view) && page == -1) {
4138                 ev_page_cache_set_current_page (view->page_cache, 0);
4139                 return TRUE;
4140         } else {
4141                 return FALSE;
4142         }
4143 }
4144
4145 /*** Enum description for usage in signal ***/
4146
4147 GType
4148 ev_sizing_mode_get_type (void)
4149 {
4150   static GType etype = 0;
4151   if (etype == 0) {
4152     static const GEnumValue values[] = {
4153       { EV_SIZING_FIT_WIDTH, "EV_SIZING_FIT_WIDTH", "fit-width" },
4154       { EV_SIZING_BEST_FIT, "EV_SIZING_BEST_FIT", "best-fit" },
4155       { EV_SIZING_FREE, "EV_SIZING_FREE", "free" },
4156       { 0, NULL, NULL }
4157     };
4158     etype = g_enum_register_static ("EvSizingMode", values);
4159   }
4160   return etype;
4161 }
4162
4163 GType
4164 ev_scroll_type_get_type (void)
4165 {
4166   static GType etype = 0;
4167   if (etype == 0) {
4168     static const GEnumValue values[] = {
4169       { EV_SCROLL_PAGE_FORWARD, "EV_SCROLL_PAGE_FORWARD", "scroll-page-forward" },
4170       { EV_SCROLL_PAGE_BACKWARD, "EV_SCROLL_PAGE_BACKWARD", "scroll-page-backward" },
4171       { EV_SCROLL_STEP_FORWARD, "EV_SCROLL_STEP_FORWARD", "scroll-step-forward" },
4172       { EV_SCROLL_STEP_FORWARD, "EV_SCROLL_STEP_FORWARD", "scroll-step-forward" },
4173       { EV_SCROLL_STEP_UP, "EV_SCROLL_STEP_UP", "scroll-step-up" },
4174       { EV_SCROLL_STEP_DOWN, "EV_SCROLL_STEP_DOWN", "scroll-step-down" },
4175       { 0, NULL, NULL }
4176     };
4177     etype = g_enum_register_static ("EvScrollType", values);
4178   }
4179   return etype;
4180 }