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