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) {
 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 gboolean
1743 ev_view_expose_event (GtkWidget      *widget,
1744                       GdkEventExpose *event)
1745 {
1746         EvView *view = EV_VIEW (widget);
1747         int i;
1748
1749         if (view->loading) {
1750                 GdkRectangle area = {0};
1751
1752                 area.width = widget->allocation.width;
1753                 area.height = widget->allocation.height;
1754
1755                 draw_loading_text (view,
1756                                    &area,
1757                                    &(event->area));
1758         }
1759
1760         if (view->document == NULL)
1761                 return FALSE;
1762
1763         for (i = view->start_page; i <= view->end_page; i++) {
1764                 GdkRectangle page_area;
1765                 GtkBorder border;
1766                 gboolean page_ready = TRUE;
1767
1768                 if (!get_page_extents (view, i, &page_area, &border))
1769                         continue;
1770
1771                 page_area.x -= view->scroll_x;
1772                 page_area.y -= view->scroll_y;
1773
1774                 draw_one_page (view, i, &page_area, &border, &(event->area), &page_ready);
1775
1776                 if (page_ready && EV_IS_DOCUMENT_FIND (view->document))
1777                         highlight_find_results (view, i);
1778         }
1779
1780         return FALSE;
1781 }
1782
1783 static gboolean
1784 ev_view_popup_menu (GtkWidget *widget)
1785 {
1786     gint x, y;
1787     EvLink *link;
1788     EvView *view = EV_VIEW (widget);
1789
1790     gtk_widget_get_pointer (widget, &x, &y);
1791     link = ev_view_get_link_at_location (view, x, y);
1792     g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, link);
1793     return TRUE;
1794 }
1795
1796 static gboolean
1797 ev_view_button_press_event (GtkWidget      *widget,
1798                             GdkEventButton *event)
1799 {
1800         EvView *view = EV_VIEW (widget);
1801         EvLink *link;
1802
1803         if (!GTK_WIDGET_HAS_FOCUS (widget)) {
1804                 gtk_widget_grab_focus (widget);
1805         }
1806
1807         view->pressed_button = event->button;
1808         view->selection_info.in_drag = FALSE;
1809
1810         switch (event->button) {
1811                 case 1:
1812                         if (view->selection_info.selections) {
1813                                 if (location_in_selected_text (view,
1814                                                                event->x + view->scroll_x,
1815                                                                event->y + view->scroll_y)) {
1816                                         view->selection_info.in_drag = TRUE;
1817                                 } else {
1818                                         clear_selection (view);
1819                                 }
1820
1821                                 gtk_widget_queue_draw (widget);
1822                         }
1823
1824                         view->selection_info.start.x = event->x + view->scroll_x;
1825                         view->selection_info.start.y = event->y + view->scroll_y;
1826
1827                         return TRUE;
1828                 case 2:
1829                         /* use root coordinates as reference point because
1830                          * scrolling changes window relative coordinates */
1831                         view->drag_info.start.x = event->x_root;
1832                         view->drag_info.start.y = event->y_root;
1833                         view->drag_info.hadj = gtk_adjustment_get_value (view->hadjustment);
1834                         view->drag_info.vadj = gtk_adjustment_get_value (view->vadjustment);
1835
1836                         ev_view_set_cursor (view, EV_VIEW_CURSOR_DRAG);
1837
1838                         return TRUE;
1839                 case 3:
1840                         link = ev_view_get_link_at_location (view, event->x, event->y);
1841                         g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, link);
1842                         return TRUE;
1843         }
1844
1845         return FALSE;
1846 }
1847
1848 static void
1849 ev_view_drag_data_get (GtkWidget        *widget,
1850                        GdkDragContext   *context,
1851                        GtkSelectionData *selection_data,
1852                        guint             info,
1853                        guint             time)
1854 {
1855         EvView *view = EV_VIEW (widget);
1856
1857         if (view->selection_info.selections &&
1858             ev_document_can_get_text (view->document)) {
1859                 gchar *text;
1860
1861                 text = get_selected_text (view);
1862
1863                 gtk_selection_data_set_text (selection_data, text, strlen (text));
1864
1865                 g_free (text);
1866         }
1867 }
1868
1869 static gboolean
1870 selection_update_idle_cb (EvView *view)
1871 {
1872         compute_selections (view, &view->selection_info.start, &view->motion);
1873         view->selection_update_id = 0;
1874         return FALSE;
1875 }
1876
1877 static gboolean
1878 selection_scroll_timeout_cb (EvView *view)
1879 {
1880         gint x, y, shift = 0;
1881         GtkWidget *widget = GTK_WIDGET (view);
1882
1883         gtk_widget_get_pointer (widget, &x, &y);
1884
1885         if (y > widget->allocation.height) {
1886                 shift = (y - widget->allocation.height) / 2;
1887         } else if (y < 0) {
1888                 shift = y / 2;
1889         }
1890
1891         if (shift)
1892                 gtk_adjustment_set_value (view->vadjustment,
1893                                           CLAMP (view->vadjustment->value + shift,
1894                                           view->vadjustment->lower,
1895                                           view->vadjustment->upper -
1896                                           view->vadjustment->page_size));
1897
1898         if (x > widget->allocation.width) {
1899                 shift = (x - widget->allocation.width) / 2;
1900         } else if (x < 0) {
1901                 shift = x / 2;
1902         }
1903
1904         if (shift)
1905                 gtk_adjustment_set_value (view->hadjustment,
1906                                           CLAMP (view->hadjustment->value + shift,
1907                                           view->hadjustment->lower,
1908                                           view->hadjustment->upper -
1909                                           view->hadjustment->page_size));
1910
1911         return TRUE;
1912 }
1913
1914 static gboolean
1915 ev_view_motion_notify_event (GtkWidget      *widget,
1916                              GdkEventMotion *event)
1917 {
1918         EvView *view = EV_VIEW (widget);
1919         gint x, y;
1920
1921         if (!view->document)
1922                 return FALSE;
1923
1924         if (event->is_hint || event->window != widget->window) {
1925             gtk_widget_get_pointer (widget, &x, &y);
1926         } else {
1927             x = event->x;
1928             y = event->y;
1929         }
1930
1931         if (view->selection_info.in_drag) {
1932                 if (gtk_drag_check_threshold (widget,
1933                                               view->selection_info.start.x,
1934                                               view->selection_info.start.y,
1935                                               x, y)) {
1936                         GdkDragContext *context;
1937                         GtkTargetList *target_list = gtk_target_list_new (NULL, 0);
1938
1939                         gtk_target_list_add_text_targets (target_list, 0);
1940
1941                         context = gtk_drag_begin (widget, target_list,
1942                                                   GDK_ACTION_COPY,
1943                                                   1, (GdkEvent *)event);
1944
1945                         view->selection_info.in_drag = FALSE;
1946
1947                         gtk_target_list_unref (target_list);
1948
1949                         return TRUE;
1950                 }
1951         }
1952
1953         /* For the Evince 0.4.x release, we limit selection to un-rotated
1954          * documents only.
1955          */
1956         if (view->pressed_button == 1 && view->rotation == 0) {
1957
1958                 /* Schedule timeout to scroll during selection and additionally
1959                  * scroll once to allow arbitrary speed. */
1960                 if (!view->selection_scroll_id)
1961                     view->selection_scroll_id = g_timeout_add (SCROLL_TIME, (GSourceFunc)selection_scroll_timeout_cb, view);
1962                 else
1963                     selection_scroll_timeout_cb (view);
1964
1965                 view->selection_info.in_selection = TRUE;
1966                 view->motion.x = x + view->scroll_x;
1967                 view->motion.y = y + view->scroll_y;
1968
1969                 /* Queue an idle to handle the motion.  We do this because
1970                  * handling any selection events in the motion could be slower
1971                  * than new motion events reach us.  We always put it in the
1972                  * idle to make sure we catch up and don't visibly lag the
1973                  * mouse. */
1974                 if (!view->selection_update_id)
1975                         view->selection_update_id = g_idle_add ((GSourceFunc)selection_update_idle_cb, view);
1976
1977                 return TRUE;
1978         } else if (view->pressed_button == 2) {
1979                 if (!view->drag_info.in_drag) {
1980                         gboolean start;
1981
1982                         start = gtk_drag_check_threshold (widget,
1983                                                           view->drag_info.start.x,
1984                                                           view->drag_info.start.y,
1985                                                           event->x_root,
1986                                                           event->y_root);
1987                         view->drag_info.in_drag = start;
1988                 }
1989
1990                 if (view->drag_info.in_drag) {
1991                         int dx, dy;
1992                         gdouble dhadj_value, dvadj_value;
1993
1994                         dx = event->x_root - view->drag_info.start.x;
1995                         dy = event->y_root - view->drag_info.start.y;
1996
1997                         dhadj_value = view->hadjustment->page_size *
1998                                       (gdouble)dx / widget->allocation.width;
1999                         dvadj_value = view->vadjustment->page_size *
2000                                       (gdouble)dy / widget->allocation.height;
2001
2002                         /* clamp scrolling to visible area */
2003                         gtk_adjustment_set_value (view->hadjustment,
2004                                                   MIN(view->drag_info.hadj - dhadj_value,
2005                                                       view->hadjustment->upper -
2006                                                       view->hadjustment->page_size));
2007                         gtk_adjustment_set_value (view->vadjustment,
2008                                                   MIN(view->drag_info.vadj - dvadj_value,
2009                                                       view->vadjustment->upper -
2010                                                       view->vadjustment->page_size));
2011
2012                         return TRUE;
2013                 }
2014         /* For the Evince 0.4.x release, we limit links to un-rotated documents
2015          * only.
2016          */
2017         } else if (view->pressed_button <= 0 &&
2018                    view->rotation == 0) {
2019                 handle_link_over_xy (view, x, y);
2020                 return TRUE;
2021         }
2022
2023         return FALSE;
2024 }
2025
2026 static gboolean
2027 ev_view_button_release_event (GtkWidget      *widget,
2028                               GdkEventButton *event)
2029 {
2030         EvView *view = EV_VIEW (widget);
2031         EvLink *link;
2032
2033         if (view->pressed_button == 2) {
2034                 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
2035         }
2036
2037         if (view->document && view->pressed_button == 1) {
2038                 link = ev_view_get_link_at_location (view, event->x, event->y);
2039         } else {
2040                 link = NULL;
2041         }
2042
2043         view->pressed_button = -1;
2044         view->drag_info.in_drag = FALSE;
2045
2046         if (view->selection_scroll_id) {
2047             g_source_remove (view->selection_scroll_id);
2048             view->selection_scroll_id = 0;
2049         }
2050         if (view->selection_update_id) {
2051             g_source_remove (view->selection_update_id);
2052             view->selection_update_id = 0;
2053         }
2054
2055         if (view->selection_info.selections) {
2056                 ev_view_update_primary_selection (view);
2057
2058                 if (view->selection_info.in_drag) {
2059                         clear_selection (view);
2060                         gtk_widget_queue_draw (widget);
2061                 }
2062
2063                 view->selection_info.in_drag = FALSE;
2064         } else if (link) {
2065                 ev_view_handle_link (view, link);
2066         } else if (view->presentation) {
2067                 switch (event->button) {
2068                         case 1:
2069                                 ev_view_next_page (view);
2070                                 return TRUE;
2071                         case 3:
2072                                 ev_view_previous_page (view);
2073                                 return TRUE;
2074                 }
2075         }
2076
2077         return FALSE;
2078 }
2079
2080 static gint
2081 ev_view_focus_in (GtkWidget     *widget,
2082                   GdkEventFocus *event)
2083 {
2084         if (EV_VIEW (widget)->pixbuf_cache)
2085                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
2086         gtk_widget_queue_draw (widget);
2087
2088         return FALSE;
2089 }
2090
2091 static gint
2092 ev_view_focus_out (GtkWidget     *widget,
2093                      GdkEventFocus *event)
2094 {
2095         if (EV_VIEW (widget)->pixbuf_cache)
2096                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
2097         gtk_widget_queue_draw (widget);
2098
2099         return FALSE;
2100 }
2101
2102 static gboolean
2103 ev_view_leave_notify_event (GtkWidget *widget, GdkEventCrossing   *event)
2104 {
2105         EvView *view = EV_VIEW (widget);
2106
2107         ev_view_set_status (view, NULL);
2108
2109         if (view->cursor == EV_VIEW_CURSOR_LINK ||
2110             view->cursor == EV_VIEW_CURSOR_IBEAM)
2111                 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
2112
2113         if (view->link_tooltip) {
2114                 view->hovered_link = NULL;
2115                 ev_tooltip_deactivate (EV_TOOLTIP (view->link_tooltip));
2116         }
2117
2118         return FALSE;
2119 }
2120
2121 static gboolean
2122 ev_view_enter_notify_event (GtkWidget *widget, GdkEventCrossing   *event)
2123 {
2124         EvView *view = EV_VIEW (widget);
2125
2126         handle_link_over_xy (view, event->x, event->y);
2127
2128         return FALSE;
2129 }
2130
2131 static void
2132 ev_view_style_set (GtkWidget *widget,
2133                    GtkStyle  *old_style)
2134 {
2135         if (EV_VIEW (widget)->pixbuf_cache)
2136                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
2137
2138         GTK_WIDGET_CLASS (ev_view_parent_class)->style_set (widget, old_style);
2139 }
2140
2141 /*** Drawing ***/
2142
2143 static guint32
2144 ev_gdk_color_to_rgb (const GdkColor *color)
2145 {
2146   guint32 result;
2147   result = (0xff0000 | (color->red & 0xff00));
2148   result <<= 8;
2149   result |= ((color->green & 0xff00) | (color->blue >> 8));
2150   return result;
2151 }
2152
2153 static void
2154 draw_rubberband (GtkWidget *widget, GdkWindow *window,
2155                  const GdkRectangle *rect, guchar alpha)
2156 {
2157         GdkGC *gc;
2158         GdkPixbuf *pixbuf;
2159         GdkColor *fill_color_gdk;
2160         guint fill_color;
2161
2162         fill_color_gdk = gdk_color_copy (&GTK_WIDGET (widget)->style->base[GTK_STATE_SELECTED]);
2163         fill_color = ev_gdk_color_to_rgb (fill_color_gdk) << 8 | alpha;
2164
2165         pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE, 8,
2166                                  rect->width, rect->height);
2167         gdk_pixbuf_fill (pixbuf, fill_color);
2168
2169         gdk_draw_pixbuf (window, NULL, pixbuf,
2170                          0, 0,
2171                          rect->x - EV_VIEW (widget)->scroll_x, rect->y - EV_VIEW (widget)->scroll_y,
2172                          rect->width, rect->height,
2173                          GDK_RGB_DITHER_NONE,
2174                          0, 0);
2175
2176         g_object_unref (pixbuf);
2177
2178         gc = gdk_gc_new (window);
2179         gdk_gc_set_rgb_fg_color (gc, fill_color_gdk);
2180         gdk_draw_rectangle (window, gc, FALSE,
2181                             rect->x - EV_VIEW (widget)->scroll_x, rect->y - EV_VIEW (widget)->scroll_y,
2182                             rect->width - 1,
2183                             rect->height - 1);
2184         g_object_unref (gc);
2185
2186         gdk_color_free (fill_color_gdk);
2187 }
2188
2189
2190 static void
2191 highlight_find_results (EvView *view, int page)
2192 {
2193         EvDocumentFind *find;
2194         int i, results = 0;
2195
2196         g_return_if_fail (EV_IS_DOCUMENT_FIND (view->document));
2197
2198         find = EV_DOCUMENT_FIND (view->document);
2199
2200         results = ev_document_find_get_n_results (find, page);
2201
2202         for (i = 0; i < results; i++) {
2203                 EvRectangle rectangle;
2204                 GdkRectangle view_rectangle;
2205                 guchar alpha;
2206
2207                 if (i == view->find_result && page == view->current_page) {
2208                         alpha = 0x90;
2209                 } else {
2210                         alpha = 0x20;
2211                 }
2212
2213                 ev_document_find_get_result (find, page, i, &rectangle);
2214                 doc_rect_to_view_rect (view, page, &rectangle, &view_rectangle);
2215                 draw_rubberband (GTK_WIDGET (view), GTK_WIDGET(view)->window,
2216                                  &view_rectangle, alpha);
2217         }
2218 }
2219
2220 static void
2221 draw_loading_text (EvView       *view,
2222                    GdkRectangle *page_area,
2223                    GdkRectangle *expose_area)
2224 {
2225         PangoLayout *layout;
2226         PangoFontDescription *font_desc;
2227         PangoRectangle logical_rect;
2228         double real_scale;
2229         int target_width;
2230
2231         const char *loading_text = _("Loading...");
2232
2233         layout = gtk_widget_create_pango_layout (GTK_WIDGET (view), loading_text);
2234
2235         font_desc = pango_font_description_new ();
2236
2237
2238         /* We set the font to be 10 points, get the size, and scale appropriately */
2239         pango_font_description_set_size (font_desc, 10 * PANGO_SCALE);
2240         pango_layout_set_font_description (layout, font_desc);
2241         pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
2242
2243         /* Make sure we fit the middle of the page */
2244         target_width = MAX (page_area->width / 2, 1);
2245         real_scale = ((double)target_width / (double) logical_rect.width) * (PANGO_SCALE * 10);
2246         pango_font_description_set_size (font_desc, (int)real_scale);
2247         pango_layout_set_font_description (layout, font_desc);
2248         pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
2249
2250         gtk_paint_layout (GTK_WIDGET (view)->style,
2251                           GTK_WIDGET (view)->window,
2252                           GTK_WIDGET_STATE (view),
2253                           FALSE,
2254                           page_area,
2255                           GTK_WIDGET (view),
2256                           NULL,
2257                           page_area->x + (target_width/2),
2258                           page_area->y + (page_area->height - logical_rect.height) / 2,
2259                           layout);
2260
2261         pango_font_description_free (font_desc);
2262         g_object_unref (layout);
2263 }
2264
2265 static void
2266 draw_one_page (EvView          *view,
2267                gint             page,
2268                GdkRectangle    *page_area,
2269                GtkBorder       *border,
2270                GdkRectangle    *expose_area,
2271                gboolean        *page_ready)
2272 {
2273         gint width, height;
2274         GdkPixbuf *current_pixbuf;
2275         GdkRectangle overlap;
2276         GdkRectangle real_page_area;
2277         EvViewSelection *selection;
2278         gint current_page;
2279
2280         g_assert (view->document);
2281
2282         if (! gdk_rectangle_intersect (page_area, expose_area, &overlap))
2283                 return;
2284
2285         current_page = ev_page_cache_get_current_page (view->page_cache);
2286         selection = find_selection_for_page (view, page);
2287         ev_page_cache_get_size (view->page_cache,
2288                                 page, view->rotation,
2289                                 view->scale,
2290                                 &width, &height);
2291         /* Render the document itself */
2292         real_page_area = *page_area;
2293
2294         real_page_area.x += border->left;
2295         real_page_area.y += border->top;
2296         real_page_area.width -= (border->left + border->right);
2297         real_page_area.height -= (border->top + border->bottom);
2298         *page_ready = TRUE;
2299
2300         ev_document_misc_paint_one_page (GTK_WIDGET(view)->window,
2301                                          GTK_WIDGET (view),
2302                                          page_area, border,
2303                                          page == current_page);
2304
2305         if (gdk_rectangle_intersect (&real_page_area, expose_area, &overlap)) {
2306                 GdkPixbuf *selection_pixbuf = NULL;
2307                 GdkPixbuf *scaled_image;
2308                 GdkPixbuf *scaled_selection;
2309
2310                 current_pixbuf = ev_pixbuf_cache_get_pixbuf (view->pixbuf_cache, page);
2311
2312                 /* Get the selection pixbuf iff we have something to draw */
2313                 if (current_pixbuf && view->selection_mode == EV_VIEW_SELECTION_TEXT && selection)
2314                         selection_pixbuf = ev_pixbuf_cache_get_selection_pixbuf (view->pixbuf_cache,
2315                                                                                  page,
2316                                                                                  view->scale,
2317                                                                                  NULL);
2318
2319                 if (current_pixbuf == NULL)
2320                         scaled_image = NULL;
2321                 else if (width == gdk_pixbuf_get_width (current_pixbuf) &&
2322                          height == gdk_pixbuf_get_height (current_pixbuf))
2323                         scaled_image = g_object_ref (current_pixbuf);
2324                 else
2325                         /* FIXME: We don't want to scale the whole area, just the right
2326                          * area of it */
2327                         scaled_image = gdk_pixbuf_scale_simple (current_pixbuf,
2328                                                                 width, height,
2329                                                                 GDK_INTERP_NEAREST);
2330
2331                 if (selection_pixbuf == NULL)
2332                         scaled_selection = NULL;
2333                 else if (width == gdk_pixbuf_get_width (selection_pixbuf) &&
2334                          height == gdk_pixbuf_get_height (selection_pixbuf))
2335                         scaled_selection = g_object_ref (selection_pixbuf);
2336                 else
2337                         /* FIXME: We don't want to scale the whole area, just the right
2338                          * area of it */
2339                         scaled_selection = gdk_pixbuf_scale_simple (selection_pixbuf,
2340                                                                     width, height,
2341                                                                     GDK_INTERP_NEAREST);
2342
2343                 if (scaled_image) {
2344                         gdk_draw_pixbuf (GTK_WIDGET(view)->window,
2345                                          GTK_WIDGET (view)->style->fg_gc[GTK_STATE_NORMAL],
2346                                          scaled_image,
2347                                          overlap.x - real_page_area.x,
2348                                          overlap.y - real_page_area.y,
2349                                          overlap.x, overlap.y,
2350                                          overlap.width, overlap.height,
2351                                          GDK_RGB_DITHER_NORMAL,
2352                                          0, 0);
2353                         g_object_unref (scaled_image);
2354                 } else {
2355                         draw_loading_text (view,
2356                                            &real_page_area,
2357                                            expose_area);
2358                         *page_ready = FALSE;
2359                 }
2360
2361                 if (scaled_selection) {
2362                         gdk_draw_pixbuf (GTK_WIDGET(view)->window,
2363                                          GTK_WIDGET (view)->style->fg_gc[GTK_STATE_NORMAL],
2364                                          scaled_selection,
2365                                          overlap.x - real_page_area.x,
2366                                          overlap.y - real_page_area.y,
2367                                          overlap.x, overlap.y,
2368                                          overlap.width, overlap.height,
2369                                          GDK_RGB_DITHER_NORMAL,
2370                                          0, 0);
2371                         g_object_unref (scaled_selection);
2372                 }
2373         }
2374 }
2375
2376 /*** GObject functions ***/
2377
2378 static void
2379 ev_view_finalize (GObject *object)
2380 {
2381         EvView *view = EV_VIEW (object);
2382
2383         LOG ("Finalize");
2384
2385         g_free (view->status);
2386         g_free (view->find_status);
2387
2388         clear_selection (view);
2389
2390         G_OBJECT_CLASS (ev_view_parent_class)->finalize (object);
2391 }
2392
2393 static void
2394 ev_view_destroy (GtkObject *object)
2395 {
2396         EvView *view = EV_VIEW (object);
2397
2398         if (view->document) {
2399                 g_object_unref (view->document);
2400                 view->document = NULL;
2401         }
2402
2403         if (view->pixbuf_cache) {
2404                 g_object_unref (view->pixbuf_cache);
2405                 view->pixbuf_cache = NULL;
2406         }
2407
2408         if (view->link_tooltip) {
2409                 gtk_widget_destroy (view->link_tooltip);
2410                 view->link_tooltip = NULL;
2411         }
2412
2413         if (view->selection_scroll_id) {
2414             g_source_remove (view->selection_scroll_id);
2415             view->selection_scroll_id = 0;
2416         }
2417
2418         if (view->selection_update_id) {
2419             g_source_remove (view->selection_update_id);
2420             view->selection_update_id = 0;
2421         }
2422
2423         ev_view_set_scroll_adjustments (view, NULL, NULL);
2424
2425         GTK_OBJECT_CLASS (ev_view_parent_class)->destroy (object);
2426 }
2427
2428 static void
2429 ev_view_set_property (GObject      *object,
2430                       guint         prop_id,
2431                       const GValue *value,
2432                       GParamSpec   *pspec)
2433 {
2434         EvView *view = EV_VIEW (object);
2435
2436         switch (prop_id) {
2437                 case PROP_CONTINUOUS:
2438                         ev_view_set_continuous (view, g_value_get_boolean (value));
2439                         break;
2440                 case PROP_DUAL_PAGE:
2441                         ev_view_set_dual_page (view, g_value_get_boolean (value));
2442                         break;
2443                 case PROP_FULLSCREEN:
2444                         ev_view_set_fullscreen (view, g_value_get_boolean (value));
2445                         break;
2446                 case PROP_PRESENTATION:
2447                         ev_view_set_presentation (view, g_value_get_boolean (value));
2448                         break;
2449                 case PROP_SIZING_MODE:
2450                         ev_view_set_sizing_mode (view, g_value_get_enum (value));
2451                         break;
2452                 case PROP_ZOOM:
2453                         ev_view_set_zoom (view, g_value_get_double (value), FALSE);
2454                         break;
2455                 case PROP_ROTATION:
2456                         ev_view_set_rotation (view, g_value_get_int (value));
2457                         break;
2458                 default:
2459                         G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
2460         }
2461 }
2462
2463 static AtkObject *
2464 ev_view_get_accessible (GtkWidget *widget)
2465 {
2466         static gboolean first_time = TRUE;
2467
2468         if (first_time) {
2469                 AtkObjectFactory *factory;
2470                 AtkRegistry *registry;
2471                 GType derived_type;
2472                 GType derived_atk_type;
2473
2474                 /*
2475                  * Figure out whether accessibility is enabled by looking at the
2476                  * type of the accessible object which would be created for
2477                  * the parent type of EvView.
2478                  */
2479                 derived_type = g_type_parent (EV_TYPE_VIEW);
2480
2481                 registry = atk_get_default_registry ();
2482                 factory = atk_registry_get_factory (registry,
2483                                                     derived_type);
2484                 derived_atk_type = atk_object_factory_get_accessible_type (factory);
2485                 if (g_type_is_a (derived_atk_type, GTK_TYPE_ACCESSIBLE))
2486                         atk_registry_set_factory_type (registry,
2487                                                        EV_TYPE_VIEW,
2488                                                        ev_view_accessible_factory_get_type ());
2489                 first_time = FALSE;
2490         }
2491         return GTK_WIDGET_CLASS (ev_view_parent_class)->get_accessible (widget);
2492 }
2493
2494 static void
2495 ev_view_get_property (GObject *object,
2496                       guint prop_id,
2497                       GValue *value,
2498                       GParamSpec *pspec)
2499 {
2500         EvView *view = EV_VIEW (object);
2501
2502         switch (prop_id) {
2503                 case PROP_STATUS:
2504                         g_value_set_string (value, view->status);
2505                         break;
2506                 case PROP_FIND_STATUS:
2507                         g_value_set_string (value, view->status);
2508                         break;
2509                 case PROP_CONTINUOUS:
2510                         g_value_set_boolean (value, view->continuous);
2511                         break;
2512                 case PROP_DUAL_PAGE:
2513                         g_value_set_boolean (value, view->dual_page);
2514                         break;
2515                 case PROP_FULLSCREEN:
2516                         g_value_set_boolean (value, view->fullscreen);
2517                         break;
2518                 case PROP_PRESENTATION:
2519                         g_value_set_boolean (value, view->presentation);
2520                         break;
2521                 case PROP_SIZING_MODE:
2522                         g_value_set_enum (value, view->sizing_mode);
2523                         break;
2524                 case PROP_ZOOM:
2525                         g_value_set_double (value, view->scale);
2526                         break;
2527                 case PROP_ROTATION:
2528                         g_value_set_int (value, view->rotation);
2529                         break;
2530                 case PROP_HAS_SELECTION:
2531                         g_value_set_boolean (value,
2532                                              view->selection_info.selections != NULL);
2533                         break;
2534                 default:
2535                         G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
2536         }
2537 }
2538
2539 static void
2540 ev_view_class_init (EvViewClass *class)
2541 {
2542         GObjectClass *object_class = G_OBJECT_CLASS (class);
2543         GtkObjectClass *gtk_object_class = GTK_OBJECT_CLASS (class);
2544         GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
2545         GtkBindingSet *binding_set;
2546
2547         object_class->finalize = ev_view_finalize;
2548         object_class->set_property = ev_view_set_property;
2549         object_class->get_property = ev_view_get_property;
2550
2551         widget_class->expose_event = ev_view_expose_event;
2552         widget_class->button_press_event = ev_view_button_press_event;
2553         widget_class->motion_notify_event = ev_view_motion_notify_event;
2554         widget_class->button_release_event = ev_view_button_release_event;
2555         widget_class->focus_in_event = ev_view_focus_in;
2556         widget_class->focus_out_event = ev_view_focus_out;
2557         widget_class->get_accessible = ev_view_get_accessible;
2558         widget_class->size_request = ev_view_size_request;
2559         widget_class->size_allocate = ev_view_size_allocate;
2560         widget_class->realize = ev_view_realize;
2561         widget_class->scroll_event = ev_view_scroll_event;
2562         widget_class->enter_notify_event = ev_view_enter_notify_event;
2563         widget_class->leave_notify_event = ev_view_leave_notify_event;
2564         widget_class->style_set = ev_view_style_set;
2565         widget_class->drag_data_get = ev_view_drag_data_get;
2566         widget_class->popup_menu = ev_view_popup_menu;
2567         gtk_object_class->destroy = ev_view_destroy;
2568
2569         class->set_scroll_adjustments = ev_view_set_scroll_adjustments;
2570         class->binding_activated = ev_view_scroll;
2571
2572         widget_class->set_scroll_adjustments_signal =
2573             g_signal_new ("set-scroll-adjustments",
2574                           G_OBJECT_CLASS_TYPE (object_class),
2575                           G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
2576                           G_STRUCT_OFFSET (EvViewClass, set_scroll_adjustments),
2577                           NULL, NULL,
2578                           ev_marshal_VOID__OBJECT_OBJECT,
2579                           G_TYPE_NONE, 2,
2580                           GTK_TYPE_ADJUSTMENT,
2581                           GTK_TYPE_ADJUSTMENT);
2582
2583         signals[SIGNAL_BINDING_ACTIVATED] = g_signal_new ("binding_activated",
2584                          G_TYPE_FROM_CLASS (object_class),
2585                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
2586                          G_STRUCT_OFFSET (EvViewClass, binding_activated),
2587                          NULL, NULL,
2588                          ev_marshal_VOID__ENUM_BOOLEAN,
2589                          G_TYPE_NONE, 2,
2590                          GTK_TYPE_SCROLL_TYPE,
2591                          G_TYPE_BOOLEAN);
2592
2593         signals[SIGNAL_ZOOM_INVALID] = g_signal_new ("zoom-invalid",
2594                          G_TYPE_FROM_CLASS (object_class),
2595                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
2596                          G_STRUCT_OFFSET (EvViewClass, zoom_invalid),
2597                          NULL, NULL,
2598                          ev_marshal_VOID__VOID,
2599                          G_TYPE_NONE, 0, G_TYPE_NONE);
2600         signals[SIGNAL_EXTERNAL_LINK] = g_signal_new ("external-link",
2601                          G_TYPE_FROM_CLASS (object_class),
2602                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
2603                          G_STRUCT_OFFSET (EvViewClass, external_link),
2604                          NULL, NULL,
2605                          g_cclosure_marshal_VOID__OBJECT,
2606                          G_TYPE_NONE, 1,
2607                          G_TYPE_OBJECT);
2608         signals[SIGNAL_POPUP_MENU] = g_signal_new ("popup",
2609                          G_TYPE_FROM_CLASS (object_class),
2610                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
2611                          G_STRUCT_OFFSET (EvViewClass, popup_menu),
2612                          NULL, NULL,
2613                          g_cclosure_marshal_VOID__OBJECT,
2614                          G_TYPE_NONE, 1,
2615                          G_TYPE_OBJECT);
2616
2617         g_object_class_install_property (object_class,
2618                                          PROP_STATUS,
2619                                          g_param_spec_string ("status",
2620                                                               "Status Message",
2621                                                               "The status message",
2622                                                               NULL,
2623                                                               G_PARAM_READABLE));
2624
2625         g_object_class_install_property (object_class,
2626                                          PROP_FIND_STATUS,
2627                                          g_param_spec_string ("find-status",
2628                                                               "Find Status Message",
2629                                                               "The find status message",
2630                                                               NULL,
2631                                                               G_PARAM_READABLE));
2632
2633         g_object_class_install_property (object_class,
2634                                          PROP_CONTINUOUS,
2635                                          g_param_spec_boolean ("continuous",
2636                                                                "Continuous",
2637                                                                "Continuous scrolling mode",
2638                                                                TRUE,
2639                                                                G_PARAM_READWRITE));
2640
2641         g_object_class_install_property (object_class,
2642                                          PROP_DUAL_PAGE,
2643                                          g_param_spec_boolean ("dual-page",
2644                                                                "Dual Page",
2645                                                                "Two pages visible at once",
2646                                                                FALSE,
2647                                                                G_PARAM_READWRITE));
2648         g_object_class_install_property (object_class,
2649                                          PROP_FULLSCREEN,
2650                                          g_param_spec_boolean ("fullscreen",
2651                                                                "Full Screen",
2652                                                                "Draw page in a fullscreen fashion",
2653                                                                FALSE,
2654                                                                G_PARAM_READWRITE));
2655         g_object_class_install_property (object_class,
2656                                          PROP_PRESENTATION,
2657                                          g_param_spec_boolean ("presentation",
2658                                                                "Presentation",
2659                                                                "Draw page in presentation mode",
2660                                                                TRUE,
2661                                                                G_PARAM_READWRITE));
2662
2663         g_object_class_install_property (object_class,
2664                                          PROP_SIZING_MODE,
2665                                          g_param_spec_enum ("sizing-mode",
2666                                                             "Sizing Mode",
2667                                                             "Sizing Mode",
2668                                                             EV_TYPE_SIZING_MODE,
2669                                                             EV_SIZING_FIT_WIDTH,
2670                                                             G_PARAM_READWRITE));
2671
2672         g_object_class_install_property (object_class,
2673                                          PROP_ZOOM,
2674                                          g_param_spec_double ("zoom",
2675                                                               "Zoom factor",
2676                                                                "Zoom factor",
2677                                                                MIN_SCALE,
2678                                                                MAX_SCALE,
2679                                                                1.0,
2680                                                                G_PARAM_READWRITE));
2681         g_object_class_install_property (object_class,
2682                                          PROP_ROTATION,
2683                                          g_param_spec_double ("rotation",
2684                                                               "Rotation",
2685                                                                "Rotation",
2686                                                                0,
2687                                                                360,
2688                                                                0,
2689                                                                G_PARAM_READWRITE));
2690         g_object_class_install_property (object_class,
2691                                          PROP_HAS_SELECTION,
2692                                          g_param_spec_boolean ("has-selection",
2693                                                                "Has selection",
2694                                                                "The view has selections",
2695                                                                FALSE,
2696                                                                G_PARAM_READABLE));
2697
2698         binding_set = gtk_binding_set_by_class (class);
2699
2700         add_scroll_binding_keypad (binding_set, GDK_Left,  0, EV_SCROLL_STEP_BACKWARD, TRUE);
2701         add_scroll_binding_keypad (binding_set, GDK_Right, 0, EV_SCROLL_STEP_FORWARD,  TRUE);
2702         add_scroll_binding_keypad (binding_set, GDK_Left,  GDK_MOD1_MASK, EV_SCROLL_STEP_DOWN, TRUE);
2703         add_scroll_binding_keypad (binding_set, GDK_Right, GDK_MOD1_MASK, EV_SCROLL_STEP_UP,  TRUE);
2704         add_scroll_binding_keypad (binding_set, GDK_Up,    0, EV_SCROLL_STEP_BACKWARD, FALSE);
2705         add_scroll_binding_keypad (binding_set, GDK_Down,  0, EV_SCROLL_STEP_FORWARD,  FALSE);
2706         add_scroll_binding_keypad (binding_set, GDK_Up,    GDK_MOD1_MASK, EV_SCROLL_STEP_DOWN, FALSE);
2707         add_scroll_binding_keypad (binding_set, GDK_Down,  GDK_MOD1_MASK, EV_SCROLL_STEP_UP,  FALSE);
2708 }
2709
2710 static void
2711 ev_view_init (EvView *view)
2712 {
2713         GTK_WIDGET_SET_FLAGS (view, GTK_CAN_FOCUS);
2714
2715         view->spacing = 5;
2716         view->scale = 1.0;
2717         view->current_page = 0;
2718         view->pressed_button = -1;
2719         view->cursor = EV_VIEW_CURSOR_NORMAL;
2720         view->drag_info.in_drag = FALSE;
2721         view->selection_info.selections = NULL;
2722         view->selection_info.in_selection = FALSE;
2723         view->selection_info.in_drag = FALSE;
2724         view->selection_mode = EV_VIEW_SELECTION_TEXT;
2725         view->continuous = TRUE;
2726         view->dual_page = FALSE;
2727         view->presentation = FALSE;
2728         view->fullscreen = FALSE;
2729         view->sizing_mode = EV_SIZING_FIT_WIDTH;
2730         view->pending_scroll = SCROLL_TO_KEEP_POSITION;
2731         view->jump_to_find_result = TRUE;
2732 }
2733
2734 /*** Callbacks ***/
2735
2736 static void
2737 find_changed_cb (EvDocument *document, int page, EvView *view)
2738 {
2739         double percent;
2740         int n_pages;
2741
2742         percent = ev_document_find_get_progress
2743                         (EV_DOCUMENT_FIND (view->document));
2744         n_pages = ev_page_cache_get_n_pages (view->page_cache);
2745
2746         if (view->jump_to_find_result == TRUE) {
2747                 jump_to_find_page (view, EV_VIEW_FIND_NEXT, 0);
2748                 jump_to_find_result (view);
2749         }
2750         update_find_status_message (view, percent * n_pages >= n_pages - 1 );
2751         if (view->current_page == page)
2752                 gtk_widget_queue_draw (GTK_WIDGET (view));
2753 }
2754
2755 static void
2756 job_finished_cb (EvPixbufCache *pixbuf_cache,
2757                  EvView        *view)
2758 {
2759         gtk_widget_queue_draw (GTK_WIDGET (view));
2760 }
2761
2762 static void
2763 page_changed_cb (EvPageCache *page_cache,
2764                  int          new_page,
2765                  EvView      *view)
2766 {
2767         if (view->current_page != new_page) {
2768                 view->current_page = new_page;
2769                 view->pending_scroll = SCROLL_TO_PAGE_POSITION;
2770                 gtk_widget_queue_resize (GTK_WIDGET (view));
2771         } else {
2772                 gtk_widget_queue_draw (GTK_WIDGET (view));
2773         }
2774
2775         if (EV_IS_DOCUMENT_FIND (view->document)) {
2776                 view->find_result = 0;
2777                 update_find_status_message (view, TRUE);
2778         }
2779 }
2780
2781 static void on_adjustment_value_changed (GtkAdjustment  *adjustment,
2782                                          EvView *view)
2783 {
2784         int dx = 0, dy = 0;
2785
2786         if (! GTK_WIDGET_REALIZED (view))
2787                 return;
2788
2789         if (view->hadjustment) {
2790                 dx = view->scroll_x - (int) view->hadjustment->value;
2791                 view->scroll_x = (int) view->hadjustment->value;
2792         } else {
2793                 view->scroll_x = 0;
2794         }
2795
2796         if (view->vadjustment) {
2797                 dy = view->scroll_y - (int) view->vadjustment->value;
2798                 view->scroll_y = (int) view->vadjustment->value;
2799         } else {
2800                 view->scroll_y = 0;
2801         }
2802
2803
2804         if (view->pending_resize)
2805                 gtk_widget_queue_draw (GTK_WIDGET (view));
2806         else
2807                 gdk_window_scroll (GTK_WIDGET (view)->window, dx, dy);
2808
2809
2810         if (view->document)
2811                 view_update_range_and_current_page (view);
2812 }
2813
2814 GtkWidget*
2815 ev_view_new (void)
2816 {
2817         GtkWidget *view;
2818
2819         view = g_object_new (EV_TYPE_VIEW, NULL);
2820
2821         return view;
2822 }
2823
2824 static void
2825 setup_caches (EvView *view)
2826 {
2827         view->page_cache = ev_page_cache_get (view->document);
2828         g_signal_connect (view->page_cache, "page-changed", G_CALLBACK (page_changed_cb), view);
2829         view->pixbuf_cache = ev_pixbuf_cache_new (GTK_WIDGET (view), view->document);
2830         g_signal_connect (view->pixbuf_cache, "job-finished", G_CALLBACK (job_finished_cb), view);
2831 }
2832
2833 static void
2834 clear_caches (EvView *view)
2835 {
2836         if (view->pixbuf_cache) {
2837                 g_object_unref (view->pixbuf_cache);
2838                 view->pixbuf_cache = NULL;
2839         }
2840
2841         if (view->page_cache) {
2842                 view->page_cache = NULL;
2843         }
2844 }
2845
2846 void
2847 ev_view_set_loading (EvView       *view,
2848                      gboolean      loading)
2849 {
2850         view->loading = loading;
2851         gtk_widget_queue_draw (GTK_WIDGET (view));
2852 }
2853
2854 void
2855 ev_view_set_document (EvView     *view,
2856                       EvDocument *document)
2857 {
2858         g_return_if_fail (EV_IS_VIEW (view));
2859
2860         view->loading = FALSE;
2861
2862         if (document != view->document) {
2863                 clear_caches (view);
2864
2865                 if (view->document) {
2866                         g_signal_handlers_disconnect_by_func (view->document,
2867                                                               find_changed_cb,
2868                                                               view);
2869                         g_object_unref (view->document);
2870                         view->page_cache = NULL;
2871
2872                 }
2873
2874                 view->document = document;
2875                 view->find_result = 0;
2876
2877                 if (view->document) {
2878                         g_object_ref (view->document);
2879                         if (EV_IS_DOCUMENT_FIND (view->document)) {
2880                                 g_signal_connect (view->document,
2881                                                   "find_changed",
2882                                                   G_CALLBACK (find_changed_cb),
2883                                                   view);
2884                         }
2885
2886                         setup_caches (view);
2887                 }
2888
2889                 gtk_widget_queue_resize (GTK_WIDGET (view));
2890         }
2891 }
2892
2893 /*** Zoom and sizing mode ***/
2894
2895 #define EPSILON 0.0000001
2896 void
2897 ev_view_set_zoom (EvView   *view,
2898                   double    factor,
2899                   gboolean  relative)
2900 {
2901         double scale;
2902
2903         if (relative)
2904                 scale = view->scale * factor;
2905         else
2906                 scale = factor;
2907
2908         scale = CLAMP (scale, MIN_SCALE, MAX_SCALE);
2909
2910         if (ABS (view->scale - scale) < EPSILON)
2911                 return;
2912
2913         view->scale = scale;
2914         view->pending_resize = TRUE;
2915
2916         gtk_widget_queue_resize (GTK_WIDGET (view));
2917
2918         g_object_notify (G_OBJECT (view), "zoom");
2919 }
2920
2921 double
2922 ev_view_get_zoom (EvView *view)
2923 {
2924         return view->scale;
2925 }
2926
2927 gboolean
2928 ev_view_get_continuous (EvView *view)
2929 {
2930         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
2931
2932         return view->continuous;
2933 }
2934
2935 void
2936 ev_view_set_continuous (EvView   *view,
2937                         gboolean  continuous)
2938 {
2939         g_return_if_fail (EV_IS_VIEW (view));
2940
2941         continuous = continuous != FALSE;
2942
2943         if (view->continuous != continuous) {
2944                 view->continuous = continuous;
2945                 view->pending_scroll = SCROLL_TO_PAGE_POSITION;
2946                 gtk_widget_queue_resize (GTK_WIDGET (view));
2947         }
2948
2949         g_object_notify (G_OBJECT (view), "continuous");
2950 }
2951
2952 gboolean
2953 ev_view_get_dual_page (EvView *view)
2954 {
2955         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
2956
2957         return view->dual_page;
2958 }
2959
2960 void
2961 ev_view_set_dual_page (EvView   *view,
2962                        gboolean  dual_page)
2963 {
2964         g_return_if_fail (EV_IS_VIEW (view));
2965
2966         dual_page = dual_page != FALSE;
2967
2968         if (view->dual_page == dual_page)
2969                 return;
2970
2971         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
2972         view->dual_page = dual_page;
2973         /* FIXME: if we're keeping the pixbuf cache around, we should extend the
2974          * preload_cache_size to be 2 if dual_page is set.
2975          */
2976         gtk_widget_queue_resize (GTK_WIDGET (view));
2977
2978         g_object_notify (G_OBJECT (view), "dual-page");
2979 }
2980
2981 void
2982 ev_view_set_fullscreen (EvView   *view,
2983                          gboolean  fullscreen)
2984 {
2985         g_return_if_fail (EV_IS_VIEW (view));
2986
2987         fullscreen = fullscreen != FALSE;
2988
2989         if (view->fullscreen == fullscreen)
2990                 return;
2991
2992         view->fullscreen = fullscreen;
2993         gtk_widget_queue_resize (GTK_WIDGET (view));
2994
2995         g_object_notify (G_OBJECT (view), "fullscreen");
2996 }
2997
2998 gboolean
2999 ev_view_get_fullscreen (EvView *view)
3000 {
3001         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
3002
3003         return view->fullscreen;
3004 }
3005
3006 void
3007 ev_view_set_presentation (EvView   *view,
3008                           gboolean  presentation)
3009 {
3010         g_return_if_fail (EV_IS_VIEW (view));
3011
3012         presentation = presentation != FALSE;
3013
3014         if (view->presentation == presentation)
3015                 return;
3016
3017         view->presentation = presentation;
3018         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
3019         gtk_widget_queue_resize (GTK_WIDGET (view));
3020
3021         if (GTK_WIDGET_REALIZED (view)) {
3022                 if (view->presentation)
3023                         gdk_window_set_background (GTK_WIDGET(view)->window,
3024                                                    &GTK_WIDGET (view)->style->black);
3025                 else
3026                         gdk_window_set_background (GTK_WIDGET(view)->window,
3027                                                    &GTK_WIDGET (view)->style->mid [GTK_STATE_NORMAL]);
3028         }
3029
3030
3031         g_object_notify (G_OBJECT (view), "presentation");
3032 }
3033
3034 gboolean
3035 ev_view_get_presentation (EvView *view)
3036 {
3037         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
3038
3039         return view->presentation;
3040 }
3041
3042 void
3043 ev_view_set_sizing_mode (EvView       *view,
3044                          EvSizingMode  sizing_mode)
3045 {
3046         g_return_if_fail (EV_IS_VIEW (view));
3047
3048         if (view->sizing_mode == sizing_mode)
3049                 return;
3050
3051         view->sizing_mode = sizing_mode;
3052         gtk_widget_queue_resize (GTK_WIDGET (view));
3053
3054         g_object_notify (G_OBJECT (view), "sizing-mode");
3055 }
3056
3057 EvSizingMode
3058 ev_view_get_sizing_mode (EvView *view)
3059 {
3060         g_return_val_if_fail (EV_IS_VIEW (view), EV_SIZING_FREE);
3061
3062         return view->sizing_mode;
3063 }
3064
3065 gboolean
3066 ev_view_can_zoom_in (EvView *view)
3067 {
3068         return view->scale * ZOOM_IN_FACTOR <= MAX_SCALE;
3069 }
3070
3071 gboolean
3072 ev_view_can_zoom_out (EvView *view)
3073 {
3074         return view->scale * ZOOM_OUT_FACTOR >= MIN_SCALE;
3075 }
3076
3077 void
3078 ev_view_zoom_in (EvView *view)
3079 {
3080         g_return_if_fail (view->sizing_mode == EV_SIZING_FREE);
3081
3082         view->pending_scroll = SCROLL_TO_CENTER;
3083         ev_view_set_zoom (view, ZOOM_IN_FACTOR, TRUE);
3084 }
3085
3086 void
3087 ev_view_zoom_out (EvView *view)
3088 {
3089         g_return_if_fail (view->sizing_mode == EV_SIZING_FREE);
3090
3091         view->pending_scroll = SCROLL_TO_CENTER;
3092         ev_view_set_zoom (view, ZOOM_OUT_FACTOR, TRUE);
3093 }
3094
3095 void
3096 ev_view_rotate_right (EvView *view)
3097 {
3098         int rotation = view->rotation + 90;
3099
3100         if (rotation >= 360) {
3101                 rotation -= 360;
3102         }
3103
3104         ev_view_set_rotation (view, rotation);
3105 }
3106
3107 void
3108 ev_view_rotate_left (EvView *view)
3109 {
3110         int rotation = view->rotation - 90;
3111
3112         if (rotation < 0) {
3113                 rotation += 360;
3114         }
3115
3116         ev_view_set_rotation (view, rotation);
3117 }
3118
3119 void
3120 ev_view_set_rotation (EvView *view, int rotation)
3121 {
3122         view->rotation = rotation;
3123
3124         if (view->pixbuf_cache) {
3125                 ev_pixbuf_cache_clear (view->pixbuf_cache);
3126                 gtk_widget_queue_resize (GTK_WIDGET (view));
3127         }
3128
3129         if (rotation != 0)
3130                 clear_selection (view);
3131
3132         g_object_notify (G_OBJECT (view), "rotation");
3133 }
3134
3135 int
3136 ev_view_get_rotation (EvView *view)
3137 {
3138         return view->rotation;
3139 }
3140
3141 static double
3142 zoom_for_size_fit_width (int doc_width,
3143                          int doc_height,
3144                          int target_width,
3145                          int target_height,
3146                          int vsb_width)
3147 {
3148         double scale;
3149
3150         scale = (double)target_width / doc_width;
3151
3152         if (doc_height * scale > target_height)
3153                 scale = (double) (target_width - vsb_width) / doc_width;
3154
3155         return scale;
3156 }
3157
3158 static double
3159 zoom_for_size_fit_height (int doc_width,
3160                           int doc_height,
3161                           int target_width,
3162                           int target_height,
3163                           int vsb_height)
3164 {
3165         double scale;
3166
3167         scale = (double)target_height / doc_height;
3168
3169         if (doc_width * scale > target_width)
3170                 scale = (double) (target_height - vsb_height) / doc_height;
3171
3172         return scale;
3173 }
3174
3175 static double
3176 zoom_for_size_best_fit (int doc_width,
3177                         int doc_height,
3178                         int target_width,
3179                         int target_height,
3180                         int vsb_width,
3181                         int hsb_width)
3182 {
3183         double w_scale;
3184         double h_scale;
3185
3186         w_scale = (double)target_width / doc_width;
3187         h_scale = (double)target_height / doc_height;
3188
3189         if (doc_height * w_scale > target_height)
3190                 w_scale = (double) (target_width - vsb_width) / doc_width;
3191         if (doc_width * h_scale > target_width)
3192                 h_scale = (double) (target_height - hsb_width) / doc_height;
3193
3194         return MIN (w_scale, h_scale);
3195 }
3196
3197
3198 static void
3199 ev_view_zoom_for_size_presentation (EvView *view,
3200                                     int     width,
3201                                     int     height)
3202 {
3203         int doc_width, doc_height;
3204         gdouble scale;
3205
3206         ev_page_cache_get_size (view->page_cache,
3207                                 view->current_page,
3208                                 view->rotation,
3209                                 1.0,
3210                                 &doc_width,
3211                                 &doc_height);
3212         scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, 0, 0);
3213         ev_view_set_zoom (view, scale, FALSE);
3214 }
3215
3216 static void
3217 ev_view_zoom_for_size_continuous_and_dual_page (EvView *view,
3218                            int     width,
3219                            int     height,
3220                            int     vsb_width,
3221                            int     hsb_height)
3222 {
3223         int doc_width, doc_height;
3224         GtkBorder border;
3225         gdouble scale;
3226
3227         ev_page_cache_get_max_width (view->page_cache,
3228                                      view->rotation,
3229                                      1.0,
3230                                      &doc_width);
3231         ev_page_cache_get_max_height (view->page_cache,
3232                                       view->rotation,
3233                                       1.0,
3234                                       &doc_height);
3235         compute_border (view, doc_width, doc_height, &border);
3236
3237         doc_width = doc_width * 2;
3238         width -= (2 * (border.left + border.right) + 3 * view->spacing);
3239         height -= (border.top + border.bottom + 2 * view->spacing - 1);
3240
3241         /* FIXME: We really need to calculate the overall height here, not the
3242          * page height.  We assume there's always a vertical scrollbar for
3243          * now.  We need to fix this. */
3244         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
3245                 scale = zoom_for_size_fit_width (doc_width, doc_height, width - vsb_width, height, 0);
3246         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
3247                 scale = zoom_for_size_best_fit (doc_width, doc_height, width - vsb_width, height, 0, hsb_height);
3248         else
3249                 g_assert_not_reached ();
3250
3251         ev_view_set_zoom (view, scale, FALSE);
3252 }
3253
3254 static void
3255 ev_view_zoom_for_size_continuous (EvView *view,
3256                                   int     width,
3257                                   int     height,
3258                                   int     vsb_width,
3259                                   int     hsb_height)
3260 {
3261         int doc_width, doc_height;
3262         GtkBorder border;
3263         gdouble scale;
3264
3265         ev_page_cache_get_max_width (view->page_cache,
3266                                      view->rotation,
3267                                      1.0,
3268                                      &doc_width);
3269         ev_page_cache_get_max_height (view->page_cache,
3270                                       view->rotation,
3271                                       1.0,
3272                                       &doc_height);
3273         compute_border (view, doc_width, doc_height, &border);
3274
3275         width -= (border.left + border.right + 2 * view->spacing);
3276         height -= (border.top + border.bottom + 2 * view->spacing - 1);
3277
3278         /* FIXME: We really need to calculate the overall height here, not the
3279          * page height.  We assume there's always a vertical scrollbar for
3280          * now.  We need to fix this. */
3281         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
3282                 scale = zoom_for_size_fit_width (doc_width, doc_height, width - vsb_width, height, 0);
3283         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
3284                 scale = zoom_for_size_best_fit (doc_width, doc_height, width - vsb_width, height, 0, hsb_height);
3285         else
3286                 g_assert_not_reached ();
3287
3288         ev_view_set_zoom (view, scale, FALSE);
3289 }
3290
3291 static void
3292 ev_view_zoom_for_size_dual_page (EvView *view,
3293                                  int     width,
3294                                  int     height,
3295                                  int     vsb_width,
3296                                  int     hsb_height)
3297 {
3298         GtkBorder border;
3299         gint doc_width, doc_height;
3300         gdouble scale;
3301         gint other_page;
3302
3303         other_page = view->current_page ^ 1;
3304
3305         /* Find the largest of the two. */
3306         ev_page_cache_get_size (view->page_cache,
3307                                 view->current_page,
3308                                 view->rotation,
3309                                 1.0,
3310                                 &doc_width, &doc_height);
3311
3312         if (other_page < ev_page_cache_get_n_pages (view->page_cache)) {
3313                 gint width_2, height_2;
3314                 ev_page_cache_get_size (view->page_cache,
3315                                         other_page,
3316                                         view->rotation,
3317                                         1.0,
3318                                         &width_2, &height_2);
3319                 if (width_2 > doc_width)
3320                         doc_width = width_2;
3321                 if (height_2 > doc_height)
3322                         doc_height = height_2;
3323         }
3324         compute_border (view, doc_width, doc_height, &border);
3325
3326         doc_width = doc_width * 2;
3327         width -= ((border.left + border.right)* 2 + 3 * view->spacing);
3328         height -= (border.top + border.bottom + 2 * view->spacing);
3329
3330         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
3331                 scale = zoom_for_size_fit_width (doc_width, doc_height, width, height, vsb_width);
3332         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
3333                 scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, vsb_width, hsb_height);
3334         else
3335                 g_assert_not_reached ();
3336
3337         ev_view_set_zoom (view, scale, FALSE);
3338 }
3339
3340 static void
3341 ev_view_zoom_for_size_single_page (EvView *view,
3342                                    int     width,
3343                                    int     height,
3344                                    int     vsb_width,
3345                                    int     hsb_height)
3346 {
3347         int doc_width, doc_height;
3348         GtkBorder border;
3349         gdouble scale;
3350
3351         ev_page_cache_get_size (view->page_cache,
3352                                 view->current_page,
3353                                 view->rotation,
3354                                 1.0,
3355                                 &doc_width,
3356                                 &doc_height);
3357         /* Get an approximate border */
3358         compute_border (view, width, height, &border);
3359
3360         width -= (border.left + border.right + 2 * view->spacing);
3361         height -= (border.top + border.bottom + 2 * view->spacing);
3362
3363         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
3364                 scale = zoom_for_size_fit_width (doc_width, doc_height, width, height, vsb_width);
3365         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
3366                 scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, vsb_width, hsb_height);
3367         else
3368                 g_assert_not_reached ();
3369
3370         ev_view_set_zoom (view, scale, FALSE);
3371 }
3372
3373 void
3374 ev_view_set_zoom_for_size (EvView *view,
3375                            int     width,
3376                            int     height,
3377                            int     vsb_width,
3378                            int     hsb_height)
3379 {
3380         g_return_if_fail (view->sizing_mode == EV_SIZING_FIT_WIDTH ||
3381                           view->sizing_mode == EV_SIZING_BEST_FIT);
3382         g_return_if_fail (width >= 0);
3383         g_return_if_fail (height >= 0);
3384
3385         if (view->document == NULL)
3386                 return;
3387
3388         if (view->presentation)
3389                 ev_view_zoom_for_size_presentation (view, width, height);
3390         else if (view->continuous && view->dual_page)
3391                 ev_view_zoom_for_size_continuous_and_dual_page (view, width, height, vsb_width, hsb_height);
3392         else if (view->continuous)
3393                 ev_view_zoom_for_size_continuous (view, width, height, vsb_width, hsb_height);
3394         else if (view->dual_page)
3395                 ev_view_zoom_for_size_dual_page (view, width, height, vsb_width, hsb_height);
3396         else
3397                 ev_view_zoom_for_size_single_page (view, width, height, vsb_width, hsb_height);
3398 }
3399
3400 /*** Status text messages ***/
3401
3402 const char *
3403 ev_view_get_status (EvView *view)
3404 {
3405         g_return_val_if_fail (EV_IS_VIEW (view), NULL);
3406
3407         return view->status;
3408 }
3409
3410 static void
3411 ev_view_set_status (EvView *view, const char *message)
3412 {
3413         g_return_if_fail (EV_IS_VIEW (view));
3414
3415         if (message != view->status) {
3416                 g_free (view->status);
3417                 view->status = g_strdup (message);
3418                 g_object_notify (G_OBJECT (view), "status");
3419         }
3420 }
3421
3422 static void
3423 update_find_status_message (EvView *view, gboolean this_page)
3424 {
3425         char *message;
3426
3427         if (this_page) {
3428                 int results;
3429
3430                 results = ev_document_find_get_n_results
3431                                 (EV_DOCUMENT_FIND (view->document),
3432                                  view->current_page);
3433                 /* TRANS: Sometimes this could be better translated as
3434                    "%d hit(s) on this page".  Therefore this string
3435                    contains plural cases. */
3436                 message = g_strdup_printf (ngettext ("%d found on this page",
3437                                                      "%d found on this page",
3438                                                      results),
3439                                            results);
3440         } else {
3441                 double percent;
3442
3443                 percent = ev_document_find_get_progress
3444                                 (EV_DOCUMENT_FIND (view->document));
3445                 message = g_strdup_printf (_("%3d%% remaining to search"),
3446                                            (int) ((1.0 - percent) * 100));
3447
3448         }
3449         ev_view_set_find_status (view, message);
3450         g_free (message);
3451 }
3452
3453 const char *
3454 ev_view_get_find_status (EvView *view)
3455 {
3456         g_return_val_if_fail (EV_IS_VIEW (view), NULL);
3457
3458         return view->find_status;
3459 }
3460
3461 static void
3462 ev_view_set_find_status (EvView *view, const char *message)
3463 {
3464         g_return_if_fail (EV_IS_VIEW (view));
3465
3466         g_free (view->find_status);
3467         view->find_status = g_strdup (message);
3468         g_object_notify (G_OBJECT (view), "find-status");
3469 }
3470
3471 /*** Find ***/
3472
3473 static void
3474 jump_to_find_result (EvView *view)
3475 {
3476         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
3477         EvRectangle rect;
3478         GdkRectangle view_rect;
3479         int n_results;
3480         int page = view->current_page;
3481
3482         n_results = ev_document_find_get_n_results (find, page);
3483
3484         if (n_results > 0  && view->find_result < n_results) {
3485                 ev_document_find_get_result
3486                         (find, page, view->find_result, &rect);
3487
3488                 doc_rect_to_view_rect (view, page, &rect, &view_rect);
3489                 ensure_rectangle_is_visible (view, &view_rect);
3490         }
3491 }
3492
3493 /**
3494  * jump_to_find_page
3495  * @view: #EvView instance
3496  * @direction: Direction to look
3497  * @shift: Shift from current page
3498  *
3499  * Jumps to the first page that has occurences of searched word.
3500  * Uses a direction where to look and a shift from current page.
3501  *
3502  */
3503 static void
3504 jump_to_find_page (EvView *view, EvViewFindDirection direction, gint shift)
3505 {
3506         int n_pages, i;
3507
3508         n_pages = ev_page_cache_get_n_pages (view->page_cache);
3509
3510         for (i = 0; i < n_pages; i++) {
3511                 int has_results;
3512                 int page;
3513
3514                 if (direction == EV_VIEW_FIND_NEXT)
3515                         page = view->current_page + i;
3516                 else
3517                         page = view->current_page - i;
3518                 page += shift;
3519
3520                 if (page >= n_pages) {
3521                         page = page - n_pages;
3522                 }
3523                 if (page < 0)
3524                         page = page + n_pages;
3525
3526                 has_results = ev_document_find_page_has_results
3527                                 (EV_DOCUMENT_FIND (view->document), page);
3528                 if (has_results == -1) {
3529                         break;
3530                 } else if (has_results == 1) {
3531                         ev_page_cache_set_current_page (view->page_cache, page);
3532                         break;
3533                 }
3534         }
3535 }
3536
3537 gboolean
3538 ev_view_can_find_next (EvView *view)
3539 {
3540         if (EV_IS_DOCUMENT_FIND (view->document)) {
3541                 EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
3542                 int i, n_pages;
3543
3544                 n_pages = ev_page_cache_get_n_pages (view->page_cache);
3545                 for (i = 0; i < n_pages; i++) {
3546                         if (ev_document_find_get_n_results (find, i) > 0) {
3547                                 return TRUE;
3548                         }
3549                 }
3550         }
3551
3552         return FALSE;
3553 }
3554
3555 void
3556 ev_view_find_next (EvView *view)
3557 {
3558         int n_results, n_pages;
3559         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
3560
3561         n_results = ev_document_find_get_n_results (find, view->current_page);
3562
3563         n_pages = ev_page_cache_get_n_pages (view->page_cache);
3564
3565         view->find_result++;
3566
3567         if (view->find_result >= n_results) {
3568
3569                 view->find_result = 0;
3570                 jump_to_find_page (view, EV_VIEW_FIND_NEXT, 1);
3571                 jump_to_find_result (view);
3572         } else {
3573                 jump_to_find_result (view);
3574                 gtk_widget_queue_draw (GTK_WIDGET (view));
3575         }
3576 }
3577
3578 gboolean
3579 ev_view_can_find_previous (EvView *view)
3580 {
3581         if (EV_IS_DOCUMENT_FIND (view->document)) {
3582                 EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
3583                 int i, n_pages;
3584
3585                 n_pages = ev_page_cache_get_n_pages (view->page_cache);
3586                 for (i = n_pages - 1; i >= 0; i--) {
3587                         if (ev_document_find_get_n_results (find, i) > 0) {
3588                                 return TRUE;
3589                         }
3590                 }
3591         }
3592
3593         return FALSE;
3594 }
3595 void
3596 ev_view_find_previous (EvView *view)
3597 {
3598         int n_results, n_pages;
3599         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
3600         EvPageCache *page_cache;
3601
3602         page_cache = ev_page_cache_get (view->document);
3603
3604         n_results = ev_document_find_get_n_results (find, view->current_page);
3605
3606         n_pages = ev_page_cache_get_n_pages (page_cache);
3607
3608         view->find_result--;
3609
3610         if (view->find_result < 0) {
3611
3612                 jump_to_find_page (view, EV_VIEW_FIND_PREV, -1);
3613                 view->find_result = ev_document_find_get_n_results (find, view->current_page) - 1;
3614                 jump_to_find_result (view);
3615         } else {
3616                 jump_to_find_result (view);
3617                 gtk_widget_queue_draw (GTK_WIDGET (view));
3618         }
3619 }
3620
3621 void ev_view_search_changed (EvView *view)
3622 {
3623         /* search string has changed, focus on new search result */
3624         view->jump_to_find_result = TRUE;
3625 }
3626
3627 /*** Selections ***/
3628
3629 /* compute_new_selection_rect/text calculates the area currently selected by
3630  * view_rect.  each handles a different mode;
3631  */
3632 static GList *
3633 compute_new_selection_rect (EvView       *view,
3634                             GdkPoint     *start,
3635                             GdkPoint     *stop)
3636 {
3637         GdkRectangle view_rect;
3638         int n_pages, i;
3639         GList *list = NULL;
3640
3641         g_assert (view->selection_mode == EV_VIEW_SELECTION_RECTANGLE);
3642
3643         view_rect.x = MIN (start->x, stop->x);
3644         view_rect.y = MIN (start->y, stop->y);
3645         view_rect.width = MAX (start->x, stop->x) - view_rect.x;
3646         view_rect.width = MAX (start->y, stop->y) - view_rect.y;
3647
3648         n_pages = ev_page_cache_get_n_pages (view->page_cache);
3649
3650         for (i = 0; i < n_pages; i++) {
3651                 GdkRectangle page_area;
3652                 GtkBorder border;
3653
3654                 if (get_page_extents (view, i, &page_area, &border)) {
3655                         GdkRectangle overlap;
3656
3657                         if (gdk_rectangle_intersect (&page_area, &view_rect, &overlap)) {
3658                                 EvViewSelection *selection;
3659
3660                                 selection = g_new0 (EvViewSelection, 1);
3661                                 selection->page = i;
3662                                 view_rect_to_doc_rect (view, &overlap, &page_area,
3663                                                        &(selection->rect));
3664
3665                                 list = g_list_append (list, selection);
3666                         }
3667                 }
3668         }
3669
3670         return list;
3671 }
3672
3673 static gboolean
3674 gdk_rectangle_point_in (GdkRectangle *rectangle,
3675                         GdkPoint     *point)
3676 {
3677         return rectangle->x <= point->x &&
3678                 rectangle->y <= point->y &&
3679                 point->x < rectangle->x + rectangle->width &&
3680                 point->y < rectangle->y + rectangle->height;
3681 }
3682
3683 static GList *
3684 compute_new_selection_text (EvView   *view,
3685                             GdkPoint *start,
3686                             GdkPoint *stop)
3687 {
3688         int n_pages, i, first, last;
3689         GList *list = NULL;
3690         EvViewSelection *selection;
3691         gint width, height;
3692         int start_page, end_page;
3693
3694         g_assert (view->selection_mode == EV_VIEW_SELECTION_TEXT);
3695
3696         n_pages = ev_page_cache_get_n_pages (view->page_cache);
3697
3698         /* First figure out the range of pages the selection
3699          * affects. */
3700         first = n_pages;
3701         last = 0;
3702         if (view->continuous) {
3703                 start_page = 0;
3704                 end_page = n_pages;
3705         } else if (view->dual_page) {
3706                 start_page = view->start_page;
3707                 end_page = view->end_page + 1;
3708         } else {
3709                 start_page = view->current_page;
3710                 end_page = view->current_page + 1;
3711         }
3712
3713         for (i = start_page; i < end_page; i++) {
3714                 GdkRectangle page_area;
3715                 GtkBorder border;
3716
3717                 get_page_extents (view, i, &page_area, &border);
3718                 if (gdk_rectangle_point_in (&page_area, start) ||
3719                     gdk_rectangle_point_in (&page_area, stop)) {
3720                         if (first == n_pages)
3721                                 first = i;
3722                         last = i;
3723                 }
3724
3725         }
3726
3727
3728
3729         /* Now create a list of EvViewSelection's for the affected
3730          * pages.  This could be an empty list, a list of just one
3731          * page or a number of pages.*/
3732         for (i = first; i < last + 1; i++) {
3733                 GdkRectangle page_area;
3734                 GtkBorder border;
3735                 GdkPoint *point;
3736
3737                 ev_page_cache_get_size (view->page_cache, i,
3738                                         view->rotation,
3739                                         1.0, &width, &height);
3740
3741                 selection = g_new0 (EvViewSelection, 1);
3742                 selection->page = i;
3743                 selection->rect.x1 = selection->rect.y1 = 0;
3744                 selection->rect.x2 = width;
3745                 selection->rect.y2 = height;
3746
3747                 get_page_extents (view, i, &page_area, &border);
3748
3749                 if (gdk_rectangle_point_in (&page_area, start))
3750                         point = start;
3751                 else
3752                         point = stop;
3753
3754                 if (i == first)
3755                         view_point_to_doc_point (view, point, &page_area,
3756                                                  &selection->rect.x1,
3757                                                  &selection->rect.y1);
3758
3759                 /* If the selection is contained within just one page,
3760                  * make sure we don't write 'start' into both points
3761                  * in selection->rect. */
3762                 if (first == last)
3763                         point = stop;
3764
3765                 if (i == last)
3766                         view_point_to_doc_point (view, point, &page_area,
3767                                                  &selection->rect.x2,
3768                                                  &selection->rect.y2);
3769
3770                 list = g_list_append (list, selection);
3771         }
3772
3773         return list;
3774 }
3775
3776 /* This function takes the newly calculated list, and figures out which regions
3777  * have changed.  It then queues a redraw approporiately.
3778  */
3779 static void
3780 merge_selection_region (EvView *view,
3781                         GList  *new_list)
3782 {
3783         GList *old_list;
3784         GList *new_list_ptr, *old_list_ptr;
3785
3786         /* Update the selection */
3787         old_list = ev_pixbuf_cache_get_selection_list (view->pixbuf_cache);
3788         g_list_foreach (view->selection_info.selections, (GFunc)selection_free, NULL);
3789         view->selection_info.selections = new_list;
3790         ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, new_list);
3791         g_object_notify (G_OBJECT (view), "has-selection");
3792
3793         new_list_ptr = new_list;
3794         old_list_ptr = old_list;
3795
3796         while (new_list_ptr || old_list_ptr) {
3797                 EvViewSelection *old_sel, *new_sel;
3798                 int cur_page;
3799                 GdkRegion *region = NULL;
3800
3801                 new_sel = (new_list_ptr) ? (new_list_ptr->data) : NULL;
3802                 old_sel = (old_list_ptr) ? (old_list_ptr->data) : NULL;
3803
3804                 /* Assume that the lists are in order, and we run through them
3805                  * comparing them, one page at a time.  We come out with the
3806                  * first page we see. */
3807                 if (new_sel && old_sel) {
3808                         if (new_sel->page < old_sel->page) {
3809                                 new_list_ptr = new_list_ptr->next;
3810                                 old_sel = NULL;
3811                         } else if (new_sel->page > old_sel->page) {
3812                                 old_list_ptr = old_list_ptr->next;
3813                                 new_sel = NULL;
3814                         } else {
3815                                 new_list_ptr = new_list_ptr->next;
3816                                 old_list_ptr = old_list_ptr->next;
3817                         }
3818                 } else if (new_sel) {
3819                         new_list_ptr = new_list_ptr->next;
3820                 } else if (old_sel) {
3821                         old_list_ptr = old_list_ptr->next;
3822                 }
3823
3824                 g_assert (new_sel || old_sel);
3825
3826                 /* is the page we're looking at on the screen?*/
3827                 cur_page = new_sel ? new_sel->page : old_sel->page;
3828                 if (cur_page < view->start_page || cur_page > view->end_page)
3829                         continue;
3830
3831                 /* seed the cache with a new page.  We are going to need the new
3832                  * region too. */
3833                 if (new_sel) {
3834                         GdkRegion *tmp_region = NULL;
3835                         ev_pixbuf_cache_get_selection_pixbuf (view->pixbuf_cache,
3836                                                               cur_page,
3837                                                               view->scale,
3838                                                               &tmp_region);
3839                         if (tmp_region) {
3840                                 new_sel->covered_region = gdk_region_copy (tmp_region);
3841                         }
3842                 }
3843
3844                 /* Now we figure out what needs redrawing */
3845                 if (old_sel && new_sel) {
3846                         if (old_sel->covered_region &&
3847                             new_sel->covered_region) {
3848                                 /* We only want to redraw the areas that have
3849                                  * changed, so we xor the old and new regions
3850                                  * and redraw if it's different */
3851                                 region = gdk_region_copy (old_sel->covered_region);
3852                                 gdk_region_xor (region, new_sel->covered_region);
3853                                 if (gdk_region_empty (region)) {
3854                                         gdk_region_destroy (region);
3855                                         region = NULL;
3856                                 }
3857                         } else if (old_sel->covered_region) {
3858                                 region = gdk_region_copy (old_sel->covered_region);
3859                         } else if (new_sel->covered_region) {
3860                                 region = gdk_region_copy (new_sel->covered_region);
3861                         }
3862                 } else if (old_sel && !new_sel) {
3863                         if (old_sel->covered_region && !gdk_region_empty (old_sel->covered_region)) {
3864                                 region = gdk_region_copy (old_sel->covered_region);
3865                         }
3866                 } else if (!old_sel && new_sel) {
3867                         if (new_sel->covered_region && !gdk_region_empty (new_sel->covered_region)) {
3868                                 region = gdk_region_copy (new_sel->covered_region);
3869                         }
3870                 } else {
3871                         g_assert_not_reached ();
3872                 }
3873
3874                 /* Redraw the damaged region! */
3875                 if (region) {
3876                         GdkRectangle page_area;
3877                         GtkBorder border;
3878
3879                         get_page_extents (view, cur_page, &page_area, &border);
3880                         gdk_region_offset (region,
3881                                            page_area.x + border.left - view->scroll_x,
3882                                            page_area.y + border.top - view->scroll_y);
3883                         gdk_window_invalidate_region (GTK_WIDGET (view)->window, region, TRUE);
3884                         gdk_region_destroy (region);
3885                 }
3886         }
3887
3888         /* Free the old list, now that we're done with it. */
3889         g_list_foreach (old_list, (GFunc) selection_free, NULL);
3890 }
3891
3892 static void
3893 compute_selections (EvView   *view,
3894                     GdkPoint *start,
3895                     GdkPoint *stop)
3896 {
3897         GList *list;
3898
3899         if (view->selection_mode == EV_VIEW_SELECTION_RECTANGLE)
3900                 list = compute_new_selection_rect (view, start, stop);
3901         else
3902                 list = compute_new_selection_text (view, start, stop);
3903         merge_selection_region (view, list);
3904 }
3905
3906 /* Free's the selection.  It's up to the caller to queue redraws if needed.
3907  */
3908 static void
3909 selection_free (EvViewSelection *selection)
3910 {
3911         if (selection->covered_region)
3912                 gdk_region_destroy (selection->covered_region);
3913         g_free (selection);
3914 }
3915
3916 static void
3917 clear_selection (EvView *view)
3918 {
3919         g_list_foreach (view->selection_info.selections, (GFunc)selection_free, NULL);
3920         view->selection_info.selections = NULL;
3921         view->selection_info.in_selection = FALSE;
3922         g_object_notify (G_OBJECT (view), "has-selection");
3923 }
3924
3925
3926 void
3927 ev_view_select_all (EvView *view)
3928 {
3929         int n_pages, i;
3930
3931         /* Disable selection on rotated pages for the 0.4.0 series */
3932         if (view->rotation != 0)
3933                 return;
3934
3935         clear_selection (view);
3936
3937         n_pages = ev_page_cache_get_n_pages (view->page_cache);
3938         for (i = 0; i < n_pages; i++) {
3939                 int width, height;
3940                 EvViewSelection *selection;
3941
3942                 ev_page_cache_get_size (view->page_cache,
3943                                         i,
3944                                         view->rotation,
3945                                         1.0, &width, &height);
3946
3947                 selection = g_new0 (EvViewSelection, 1);
3948                 selection->page = i;
3949                 selection->rect.x1 = selection->rect.y1 = 0;
3950                 selection->rect.x2 = width;
3951                 selection->rect.y2 = height;
3952
3953                 view->selection_info.selections = g_list_append (view->selection_info.selections, selection);
3954         }
3955
3956         ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, view->selection_info.selections);
3957         g_object_notify (G_OBJECT (view), "has-selection");
3958         gtk_widget_queue_draw (GTK_WIDGET (view));
3959 }
3960
3961 gboolean
3962 ev_view_get_has_selection (EvView *view)
3963 {
3964         return view->selection_info.selections != NULL;
3965 }
3966
3967 static char *
3968 get_selected_text (EvView *ev_view)
3969 {
3970         GString *text;
3971         GList *l;
3972
3973         text = g_string_new (NULL);
3974
3975         ev_document_doc_mutex_lock ();
3976
3977         for (l = ev_view->selection_info.selections; l != NULL; l = l->next) {
3978                 EvViewSelection *selection = (EvViewSelection *)l->data;
3979                 char *tmp;
3980
3981                 tmp = ev_document_get_text (ev_view->document,
3982                                             selection->page,
3983                                             &selection->rect);
3984                 g_string_append (text, tmp);
3985                 g_free (tmp);
3986         }
3987
3988         ev_document_doc_mutex_unlock ();
3989
3990         return g_string_free (text, FALSE);
3991 }
3992
3993 void
3994 ev_view_copy (EvView *ev_view)
3995 {
3996         GtkClipboard *clipboard;
3997         char *text;
3998
3999         if (!ev_document_can_get_text (ev_view->document)) {
4000                 return;
4001         }
4002
4003         text = get_selected_text (ev_view);
4004         clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view),
4005                                               GDK_SELECTION_CLIPBOARD);
4006         gtk_clipboard_set_text (clipboard, text, -1);
4007         g_free (text);
4008 }
4009
4010 static void
4011 ev_view_primary_get_cb (GtkClipboard     *clipboard,
4012                         GtkSelectionData *selection_data,
4013                         guint             info,
4014                         gpointer          data)
4015 {
4016         EvView *ev_view = EV_VIEW (data);
4017         char *text;
4018
4019         if (!ev_document_can_get_text (ev_view->document)) {
4020                 return;
4021         }
4022
4023         text = get_selected_text (ev_view);
4024         gtk_selection_data_set_text (selection_data, text, -1);
4025         g_free (text);
4026 }
4027
4028 static void
4029 ev_view_primary_clear_cb (GtkClipboard *clipboard,
4030                           gpointer      data)
4031 {
4032         EvView *view = EV_VIEW (data);
4033
4034         clear_selection (view);
4035 }
4036
4037 static void
4038 ev_view_update_primary_selection (EvView *ev_view)
4039 {
4040         GtkClipboard *clipboard;
4041
4042         clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view),
4043                                               GDK_SELECTION_PRIMARY);
4044
4045         if (ev_view->selection_info.selections) {
4046                 if (!gtk_clipboard_set_with_owner (clipboard,
4047                                                    targets,
4048                                                    G_N_ELEMENTS (targets),
4049                                                    ev_view_primary_get_cb,
4050                                                    ev_view_primary_clear_cb,
4051                                                    G_OBJECT (ev_view)))
4052                         ev_view_primary_clear_cb (clipboard, ev_view);
4053         } else {
4054                 if (gtk_clipboard_get_owner (clipboard) == G_OBJECT (ev_view))
4055                         gtk_clipboard_clear (clipboard);
4056         }
4057 }
4058
4059 /*** Cursor operations ***/
4060
4061 static GdkCursor *
4062 ev_view_create_invisible_cursor(void)
4063 {
4064        GdkBitmap *empty;
4065        GdkColor black = { 0, 0, 0, 0 };
4066        static char bits[] = { 0x00 };
4067
4068        empty = gdk_bitmap_create_from_data (NULL, bits, 1, 1);
4069
4070        return gdk_cursor_new_from_pixmap (empty, empty, &black, &black, 0, 0);
4071 }
4072
4073 static void
4074 ev_view_set_cursor (EvView *view, EvViewCursor new_cursor)
4075 {
4076         GdkCursor *cursor = NULL;
4077         GdkDisplay *display;
4078         GtkWidget *widget;
4079
4080         if (view->cursor == new_cursor) {
4081                 return;
4082         }
4083
4084         widget = gtk_widget_get_toplevel (GTK_WIDGET (view));
4085         display = gtk_widget_get_display (widget);
4086         view->cursor = new_cursor;
4087
4088         switch (new_cursor) {
4089                 case EV_VIEW_CURSOR_NORMAL:
4090                         gdk_window_set_cursor (widget->window, NULL);
4091                         break;
4092                 case EV_VIEW_CURSOR_IBEAM:
4093                         cursor = gdk_cursor_new_for_display (display, GDK_XTERM);
4094                         break;
4095                 case EV_VIEW_CURSOR_LINK:
4096                         cursor = gdk_cursor_new_for_display (display, GDK_HAND2);
4097                         break;
4098                 case EV_VIEW_CURSOR_WAIT:
4099                         cursor = gdk_cursor_new_for_display (display, GDK_WATCH);
4100                         break;
4101                 case EV_VIEW_CURSOR_HIDDEN:
4102                         cursor = ev_view_create_invisible_cursor ();
4103                         break;
4104                 case EV_VIEW_CURSOR_DRAG:
4105                         cursor = gdk_cursor_new_for_display (display, GDK_FLEUR);
4106                         break;
4107         }
4108
4109         if (cursor) {
4110                 gdk_window_set_cursor (widget->window, cursor);
4111                 gdk_cursor_unref (cursor);
4112                 gdk_flush();
4113         }
4114 }
4115
4116 void
4117 ev_view_hide_cursor (EvView *view)
4118 {
4119        ev_view_set_cursor (view, EV_VIEW_CURSOR_HIDDEN);
4120 }
4121
4122 void
4123 ev_view_show_cursor (EvView *view)
4124 {
4125        ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
4126 }
4127
4128 gboolean
4129 ev_view_next_page (EvView *view)
4130 {
4131         int page;
4132
4133         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
4134
4135         if (!view->page_cache)
4136                 return FALSE;
4137
4138         page = ev_page_cache_get_current_page (view->page_cache);
4139
4140         if (view->dual_page && !view->presentation)
4141                 page = page + 2;
4142         else
4143                 page = page + 1;
4144
4145         if (page < ev_page_cache_get_n_pages (view->page_cache)) {
4146                 ev_page_cache_set_current_page (view->page_cache, page);
4147                 return TRUE;
4148         } else if (ev_view_get_dual_page (view) && page == ev_page_cache_get_n_pages (view->page_cache)) {
4149                 ev_page_cache_set_current_page (view->page_cache, page - 1);
4150                 return TRUE;
4151         } else {
4152                 return FALSE;
4153         }
4154 }
4155
4156 gboolean
4157 ev_view_previous_page (EvView *view)
4158 {
4159         int page;
4160
4161         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
4162
4163         if (!view->page_cache)
4164                 return FALSE;
4165
4166         page = ev_page_cache_get_current_page (view->page_cache);
4167
4168         if (view->dual_page && !view->presentation)
4169                 page = page - 2;
4170         else
4171                 page = page - 1;
4172
4173         if (page >= 0) {
4174                 ev_page_cache_set_current_page (view->page_cache, page);
4175                 return TRUE;
4176         } else if (ev_view_get_dual_page (view) && page == -1) {
4177                 ev_page_cache_set_current_page (view->page_cache, 0);
4178                 return TRUE;
4179         } else {
4180                 return FALSE;
4181         }
4182 }
4183
4184 /*** Enum description for usage in signal ***/
4185
4186 GType
4187 ev_sizing_mode_get_type (void)
4188 {
4189   static GType etype = 0;
4190   if (etype == 0) {
4191     static const GEnumValue values[] = {
4192       { EV_SIZING_FIT_WIDTH, "EV_SIZING_FIT_WIDTH", "fit-width" },
4193       { EV_SIZING_BEST_FIT, "EV_SIZING_BEST_FIT", "best-fit" },
4194       { EV_SIZING_FREE, "EV_SIZING_FREE", "free" },
4195       { 0, NULL, NULL }
4196     };
4197     etype = g_enum_register_static ("EvSizingMode", values);
4198   }
4199   return etype;
4200 }
4201
4202 GType
4203 ev_scroll_type_get_type (void)
4204 {
4205   static GType etype = 0;
4206   if (etype == 0) {
4207     static const GEnumValue values[] = {
4208       { EV_SCROLL_PAGE_FORWARD, "EV_SCROLL_PAGE_FORWARD", "scroll-page-forward" },
4209       { EV_SCROLL_PAGE_BACKWARD, "EV_SCROLL_PAGE_BACKWARD", "scroll-page-backward" },
4210       { EV_SCROLL_STEP_FORWARD, "EV_SCROLL_STEP_FORWARD", "scroll-step-forward" },
4211       { EV_SCROLL_STEP_FORWARD, "EV_SCROLL_STEP_FORWARD", "scroll-step-forward" },
4212       { EV_SCROLL_STEP_UP, "EV_SCROLL_STEP_UP", "scroll-step-up" },
4213       { EV_SCROLL_STEP_DOWN, "EV_SCROLL_STEP_DOWN", "scroll-step-down" },
4214       { 0, NULL, NULL }
4215     };
4216     etype = g_enum_register_static ("EvScrollType", values);
4217   }
4218   return etype;
4219 }