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