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 <config.h>
  22 #include <stdlib.h>
  23 #include <math.h>
  24 #include <string.h>
  25 #include <gtk/gtkalignment.h>
  26 #include <glib/gi18n.h>
  27 #include <gtk/gtkbindings.h>
  28 #include <gtk/gtkselection.h>
  29 #include <gtk/gtkclipboard.h>
  30 #include <gdk/gdkkeysyms.h>
  31
  32 #include "ev-marshal.h"
  33 #include "ev-view.h"
  34 #include "ev-view-private.h"
  35 #include "ev-utils.h"
  36 #include "ev-document-links.h"
  37 #include "ev-document-images.h"
  38 #include "ev-document-find.h"
  39 #include "ev-document-transition.h"
  40 #include "ev-document-forms.h"
  41 #include "ev-document-misc.h"
  42 #include "ev-page-cache.h"
  43 #include "ev-pixbuf-cache.h"
  44 #include "ev-transition-animation.h"
  45 #if !GTK_CHECK_VERSION (2, 11, 7)
  46 #include "ev-tooltip.h"
  47 #endif
  48 #include "ev-application.h"
  49
  50 #define EV_VIEW_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass), EV_TYPE_VIEW, EvViewClass))
  51 #define EV_IS_VIEW_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), EV_TYPE_VIEW))
  52 #define EV_VIEW_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj), EV_TYPE_VIEW, EvViewClass))
  53
  54
  55 enum {
  56         PROP_0,
  57         PROP_FIND_STATUS,
  58         PROP_CONTINUOUS,
  59         PROP_DUAL_PAGE,
  60         PROP_FULLSCREEN,
  61         PROP_PRESENTATION,
  62         PROP_SIZING_MODE,
  63         PROP_ZOOM,
  64         PROP_ROTATION,
  65         PROP_HAS_SELECTION,
  66 };
  67
  68 enum {
  69         SIGNAL_BINDING_ACTIVATED,
  70         SIGNAL_ZOOM_INVALID,
  71         SIGNAL_HANDLE_LINK,
  72         SIGNAL_EXTERNAL_LINK,
  73         SIGNAL_POPUP_MENU,
  74         N_SIGNALS,
  75 };
  76
  77 enum {
  78         TARGET_DND_URI,
  79         TARGET_DND_TEXT,
  80         TARGET_DND_IMAGE
  81 };
  82
  83 enum {
  84         TARGET_STRING,
  85         TARGET_TEXT,
  86         TARGET_COMPOUND_TEXT,
  87         TARGET_UTF8_STRING,
  88         TARGET_TEXT_BUFFER_CONTENTS
  89 };
  90
  91 static const GtkTargetEntry clipboard_targets[] = {
  92         { "STRING", 0, TARGET_STRING },
  93         { "TEXT",   0, TARGET_TEXT },
  94         { "COMPOUND_TEXT", 0, TARGET_COMPOUND_TEXT },
  95         { "UTF8_STRING", 0, TARGET_UTF8_STRING },
  96 };
  97
  98 static const GtkTargetEntry view_drop_targets[] = {
  99         { "text/uri-list", 0, 0 }
 100 };
 101
 102 static guint signals[N_SIGNALS];
 103
 104 typedef enum {
 105         EV_VIEW_FIND_NEXT,
 106         EV_VIEW_FIND_PREV
 107 } EvViewFindDirection;
 108
 109 #define ZOOM_IN_FACTOR  1.2
 110 #define ZOOM_OUT_FACTOR (1.0/ZOOM_IN_FACTOR)
 111
 112 #define MIN_SCALE 0.05409
 113 #define MAX_SCALE 4.0
 114
 115 #define SCROLL_TIME 150
 116
 117 /*** Scrolling ***/
 118 static void       scroll_to_current_page                     (EvView *view,
 119                                                               GtkOrientation orientation);
 120 static void       ev_view_set_scroll_adjustments             (GtkLayout          *layout,
 121                                                               GtkAdjustment      *hadjustment,
 122                                                               GtkAdjustment      *vadjustment);
 123 static void       view_update_range_and_current_page         (EvView             *view);
 124 static void       set_scroll_adjustment                      (EvView             *view,
 125                                                               GtkOrientation      orientation,
 126                                                               GtkAdjustment      *adjustment);
 127 static void       add_scroll_binding_keypad                  (GtkBindingSet      *binding_set,
 128                                                               guint               keyval,
 129                                                               GdkModifierType modifiers,
 130                                                               EvScrollType       scroll,
 131                                                               gboolean            horizontal);
 132 static void       ensure_rectangle_is_visible                (EvView             *view,
 133                                                               GdkRectangle       *rect);
 134
 135 /*** Geometry computations ***/
 136 static void       compute_border                             (EvView             *view,
 137                                                               int                 width,
 138                                                               int                 height,
 139                                                               GtkBorder          *border);
 140 static void       get_page_y_offset                          (EvView *view,
 141                                                               int page,
 142                                                               double zoom,
 143                                                               int *y_offset);
 144 static gboolean   get_page_extents                           (EvView             *view,
 145                                                               gint                page,
 146                                                               GdkRectangle       *page_area,
 147                                                               GtkBorder          *border);
 148 static void       view_rect_to_doc_rect                      (EvView             *view,
 149                                                               GdkRectangle       *view_rect,
 150                                                               GdkRectangle       *page_area,
 151                                                               EvRectangle        *doc_rect);
 152 static void       doc_rect_to_view_rect                      (EvView             *view,
 153                                                               int                 page,
 154                                                               EvRectangle        *doc_rect,
 155                                                               GdkRectangle       *view_rect);
 156 static void       find_page_at_location                      (EvView             *view,
 157                                                               gdouble             x,
 158                                                               gdouble             y,
 159                                                               gint               *page,
 160                                                               gint               *x_offset,
 161                                                               gint               *y_offset);
 162 static gboolean  doc_point_to_view_point                     (EvView             *view,
 163                                                               int                 page,
 164                                                               EvPoint            *doc_point,
 165                                                               GdkPoint           *view_point);
 166 /*** Hyperrefs ***/
 167 static EvLink *   ev_view_get_link_at_location               (EvView             *view,
 168                                                               gdouble             x,
 169                                                               gdouble             y);
 170 static char*      tip_from_link                              (EvView             *view,
 171                                                               EvLink             *link);
 172 /*** Forms ***/
 173 static EvFormField *ev_view_get_form_field_at_location       (EvView             *view,
 174                                                                gdouble            x,
 175                                                                gdouble            y);
 176
 177 /*** GtkWidget implementation ***/
 178 static void       ev_view_size_request_continuous_dual_page  (EvView             *view,
 179                                                               GtkRequisition     *requisition);
 180 static void       ev_view_size_request_continuous            (EvView             *view,
 181                                                               GtkRequisition     *requisition);
 182 static void       ev_view_size_request_dual_page             (EvView             *view,
 183                                                               GtkRequisition     *requisition);
 184 static void       ev_view_size_request_single_page           (EvView             *view,
 185                                                               GtkRequisition     *requisition);
 186 static void       ev_view_size_request                       (GtkWidget          *widget,
 187                                                               GtkRequisition     *requisition);
 188 static void       ev_view_size_allocate                      (GtkWidget          *widget,
 189                                                               GtkAllocation      *allocation);
 190 static void       ev_view_realize                            (GtkWidget          *widget);
 191 static gboolean   ev_view_scroll_event                       (GtkWidget          *widget,
 192                                                               GdkEventScroll     *event);
 193 static gboolean   ev_view_expose_event                       (GtkWidget          *widget,
 194                                                               GdkEventExpose     *event);
 195 static gboolean   ev_view_popup_menu                         (GtkWidget          *widget);
 196 static gboolean   ev_view_button_press_event                 (GtkWidget          *widget,
 197                                                               GdkEventButton     *event);
 198 static gboolean   ev_view_motion_notify_event                (GtkWidget          *widget,
 199                                                               GdkEventMotion     *event);
 200 static gboolean   ev_view_button_release_event               (GtkWidget          *widget,
 201                                                               GdkEventButton     *event);
 202 static gboolean   ev_view_enter_notify_event                 (GtkWidget          *widget,
 203                                                               GdkEventCrossing   *event);
 204 static gboolean   ev_view_leave_notify_event                 (GtkWidget          *widget,
 205                                                               GdkEventCrossing   *event);
 206 static void       ev_view_style_set                          (GtkWidget          *widget,
 207                                                               GtkStyle           *old_style);
 208 static void       ev_view_remove_all                         (EvView             *view);
 209
 210 static AtkObject *ev_view_get_accessible                     (GtkWidget *widget);
 211
 212 /*** Drawing ***/
 213 static guint32    ev_gdk_color_to_rgb                        (const GdkColor     *color);
 214 static void       draw_rubberband                            (GtkWidget          *widget,
 215                                                               GdkWindow          *window,
 216                                                               const GdkRectangle *rect,
 217                                                               guchar              alpha);
 218 static void       highlight_find_results                     (EvView             *view,
 219                                                               int                 page);
 220 static void       draw_one_page                              (EvView             *view,
 221                                                               gint                page,
 222                                                               cairo_t            *cr,
 223                                                               GdkRectangle       *page_area,
 224                                                               GtkBorder          *border,
 225                                                               GdkRectangle       *expose_area,
 226                                                               gboolean           *page_ready);
 227 static void       draw_loading_text                          (EvView             *view,
 228                                                               GdkRectangle       *page_area,
 229                                                               GdkRectangle       *expose_area);
 230
 231 /*** Callbacks ***/
 232 static void       find_changed_cb                            (EvDocument         *document,
 233                                                               int                 page,
 234                                                               EvView             *view);
 235 static void       job_finished_cb                            (EvPixbufCache      *pixbuf_cache,
 236                                                               GdkRegion          *region,
 237                                                               EvView             *view);
 238 static void       page_changed_cb                            (EvPageCache        *page_cache,
 239                                                               int                 new_page,
 240                                                               EvView             *view);
 241 static void       on_adjustment_value_changed                (GtkAdjustment      *adjustment,
 242                                                               EvView             *view);
 243
 244 /*** GObject ***/
 245 static void       ev_view_finalize                           (GObject            *object);
 246 static void       ev_view_destroy                            (GtkObject          *object);
 247 static void       ev_view_set_property                       (GObject            *object,
 248                                                               guint               prop_id,
 249                                                               const GValue       *value,
 250                                                               GParamSpec         *pspec);
 251 static void       ev_view_get_property                       (GObject            *object,
 252                                                               guint               prop_id,
 253                                                               GValue             *value,
 254                                                               GParamSpec         *pspec);
 255 static void       ev_view_class_init                         (EvViewClass        *class);
 256 static void       ev_view_init                               (EvView             *view);
 257
 258 /*** Zoom and sizing ***/
 259 static double   zoom_for_size_fit_width                      (int doc_width,
 260                                                               int doc_height,
 261                                                               int target_width,
 262                                                               int target_height,
 263                                                               int vsb_width);
 264 static double   zoom_for_size_fit_height                     (int doc_width,
 265                                                               int doc_height,
 266                                                               int target_width,
 267                                                               int target_height,
 268                                                               int vsb_height);
 269 static double   zoom_for_size_best_fit                       (int doc_width,
 270                                                               int doc_height,
 271                                                               int target_width,
 272                                                               int target_height,
 273                                                               int vsb_width,
 274                                                               int hsb_width);
 275 static void     ev_view_zoom_for_size_presentation           (EvView *view,
 276                                                               int     width,
 277                                                               int     height);
 278 static void     ev_view_zoom_for_size_continuous_and_dual_page (EvView *view,
 279                                                                 int     width,
 280                                                                 int     height,
 281                                                                 int     vsb_width,
 282                                                                 int     hsb_height);
 283 static void     ev_view_zoom_for_size_continuous               (EvView *view,
 284                                                                 int     width,
 285                                                                 int     height,
 286                                                                 int     vsb_width,
 287                                                                 int     hsb_height);
 288 static void     ev_view_zoom_for_size_dual_page                (EvView *view,
 289                                                                 int     width,
 290                                                                 int     height,
 291                                                                 int     vsb_width,
 292                                                                 int     hsb_height);
 293 static void     ev_view_zoom_for_size_single_page              (EvView *view,
 294                                                                 int     width,
 295                                                                 int     height,
 296                                                                 int     vsb_width,
 297                                                                 int     hsb_height);
 298 /*** Cursors ***/
 299 static GdkCursor* ev_view_create_invisible_cursor            (void);
 300 static void       ev_view_set_cursor                         (EvView             *view,
 301                                                               EvViewCursor        new_cursor);
 302 static void       ev_view_handle_cursor_over_xy              (EvView *view,
 303                                                               gint x,
 304                                                               gint y);
 305
 306 /*** Find ***/
 307 static void       update_find_status_message                 (EvView             *view,
 308                                                               gboolean            this_page);
 309 static void       ev_view_set_find_status                    (EvView             *view,
 310                                                               const char         *message);
 311 static void       jump_to_find_result                        (EvView             *view);
 312 static void       jump_to_find_page                          (EvView             *view,
 313                                                               EvViewFindDirection direction,
 314                                                               gint                shift);
 315
 316 /*** Selection ***/
 317 static void       compute_selections                         (EvView             *view,
 318                                                               EvSelectionStyle    style,
 319                                                               GdkPoint           *start,
 320                                                               GdkPoint           *stop);
 321 static void       clear_selection                            (EvView             *view);
 322 static void       clear_link_selected                        (EvView             *view);
 323 static void       selection_free                             (EvViewSelection    *selection);
 324 static char*      get_selected_text                          (EvView             *ev_view);
 325 static void       ev_view_primary_get_cb                     (GtkClipboard       *clipboard,
 326                                                               GtkSelectionData   *selection_data,
 327                                                               guint               info,
 328                                                               gpointer            data);
 329 static void       ev_view_primary_clear_cb                   (GtkClipboard       *clipboard,
 330                                                               gpointer            data);
 331 static void       ev_view_update_primary_selection           (EvView             *ev_view);
 332
 333 /*** Presentation ***/
 334 static void       ev_view_presentation_transition_start      (EvView             *ev_view);
 335 static void       ev_view_presentation_transition_stop       (EvView             *ev_view);
 336
 337
 338 G_DEFINE_TYPE (EvView, ev_view, GTK_TYPE_LAYOUT)
 339
 340 static void
 341 scroll_to_current_page (EvView *view, GtkOrientation orientation)
 342 {
 343         GdkPoint view_point;
 344
 345         if (view->document == NULL) {
 346                 return;
 347         }
 348
 349         doc_point_to_view_point (view, view->current_page, &view->pending_point, &view_point);
 350
 351         if (orientation == GTK_ORIENTATION_VERTICAL) {
 352                 view->pending_point.y = 0;
 353         } else {
 354                 view->pending_point.x = 0;
 355         }
 356
 357         if (orientation == GTK_ORIENTATION_VERTICAL) {
 358                 if (view->continuous) {
 359                         gtk_adjustment_clamp_page (view->vadjustment,
 360                                                    view_point.y - view->spacing / 2,
 361                                                    view_point.y + view->vadjustment->page_size);
 362                 } else {
 363                         gtk_adjustment_set_value (view->vadjustment,
 364                                                   CLAMP (view_point.y,
 365                                                   view->vadjustment->lower,
 366                                                   view->vadjustment->upper -
 367                                                   view->vadjustment->page_size));
 368                 }
 369         } else {
 370                 if (view->dual_page) {
 371                         gtk_adjustment_clamp_page (view->hadjustment,
 372                                                    view_point.x,
 373                                                    view_point.x + view->hadjustment->page_size);
 374                 } else {
 375                         gtk_adjustment_set_value (view->hadjustment,
 376                                                   CLAMP (view_point.x,
 377                                                   view->hadjustment->lower,
 378                                                   view->hadjustment->upper -
 379                                                   view->hadjustment->page_size));
 380                 }
 381         }
 382 }
 383
 384 static void
 385 view_set_adjustment_values (EvView         *view,
 386                             GtkOrientation  orientation)
 387 {
 388         GtkWidget *widget = GTK_WIDGET (view);
 389         GtkAdjustment *adjustment;
 390         int requisition;
 391         int allocation;
 392
 393         double factor;
 394         gint new_value;
 395
 396         if (orientation == GTK_ORIENTATION_HORIZONTAL)  {
 397                 requisition = widget->requisition.width;
 398                 allocation = widget->allocation.width;
 399                 adjustment = view->hadjustment;
 400         } else {
 401                 requisition = widget->requisition.height;
 402                 allocation = widget->allocation.height;
 403                 adjustment = view->vadjustment;
 404         }
 405
 406         if (!adjustment)
 407                 return;
 408
 409         factor = 1.0;
 410         switch (view->pending_scroll) {
 411                 case SCROLL_TO_KEEP_POSITION:
 412                 case SCROLL_TO_FIND_LOCATION:
 413                         factor = (adjustment->value) / adjustment->upper;
 414                         break;
 415                 case SCROLL_TO_PAGE_POSITION:
 416                         break;
 417                 case SCROLL_TO_CENTER:
 418                         factor = (adjustment->value + adjustment->page_size * 0.5) / adjustment->upper;
 419                         break;
 420         }
 421
 422         adjustment->page_size = allocation;
 423         adjustment->step_increment = allocation * 0.1;
 424         adjustment->page_increment = allocation * 0.9;
 425         adjustment->lower = 0;
 426         adjustment->upper = MAX (allocation, requisition);
 427
 428         /*
 429          * We add 0.5 to the values before to average out our rounding errors.
 430          */
 431         switch (view->pending_scroll) {
 432                 case SCROLL_TO_KEEP_POSITION:
 433                 case SCROLL_TO_FIND_LOCATION:
 434                         new_value = CLAMP (adjustment->upper * factor + 0.5, 0, adjustment->upper - adjustment->page_size);
 435                         gtk_adjustment_set_value (adjustment, (int)new_value);
 436                         break;
 437                 case SCROLL_TO_PAGE_POSITION:
 438                         scroll_to_current_page (view, orientation);
 439                         break;
 440                 case SCROLL_TO_CENTER:
 441                         new_value = CLAMP (adjustment->upper * factor - adjustment->page_size * 0.5 + 0.5,
 442                                            0, adjustment->upper - adjustment->page_size);
 443                         gtk_adjustment_set_value (adjustment, (int)new_value);
 444                         break;
 445         }
 446
 447         gtk_adjustment_changed (adjustment);
 448 }
 449
 450 static void
 451 view_update_range_and_current_page (EvView *view)
 452 {
 453         gint current_page;
 454         gint best_current_page = -1;
 455
 456         /* Presentation trumps all other modes */
 457         if (view->presentation) {
 458                 view->start_page = view->current_page;
 459                 view->end_page = view->current_page;
 460         } else if (view->continuous) {
 461                 GdkRectangle current_area, unused, page_area;
 462                 GtkBorder border;
 463                 gboolean found = FALSE;
 464                 gint area_max = -1, area;
 465                 int i;
 466
 467                 if (!(view->vadjustment && view->hadjustment))
 468                         return;
 469
 470                 current_area.x = view->hadjustment->value;
 471                 current_area.width = view->hadjustment->upper;
 472                 current_area.y = view->vadjustment->value;
 473                 current_area.height = view->vadjustment->page_size;
 474
 475                 for (i = 0; i < ev_page_cache_get_n_pages (view->page_cache); i++) {
 476
 477                         get_page_extents (view, i, &page_area, &border);
 478
 479                         if (gdk_rectangle_intersect (&current_area, &page_area, &unused)) {
 480                                 area = unused.width * unused.height;
 481
 482                                 if (!found) {
 483                                         area_max = area;
 484                                         view->start_page = i;
 485                                         found = TRUE;
 486                                         best_current_page = i;
 487                                 }
 488                                 if (area > area_max) {
 489                                         best_current_page = (area == area_max) ? MIN (i, best_current_page) : i;
 490                                         area_max = area;
 491                                 }
 492
 493                                 view->end_page = i;
 494                         } else if (found && view->current_page <= view->end_page) {
 495                                 break;
 496                         }
 497                 }
 498
 499         } else if (view->dual_page) {
 500                 if (view->current_page % 2 == ev_page_cache_get_dual_even_left (view->page_cache)) {
 501                         view->start_page = view->current_page;
 502                         if (view->current_page + 1 < ev_page_cache_get_n_pages (view->page_cache))
 503                                 view->end_page = view->start_page + 1;
 504                         else
 505                                 view->end_page = view->start_page;
 506                 } else {
 507                         if (view->current_page < 1)
 508                                 view->start_page = view->current_page;
 509                         else
 510                                 view->start_page = view->current_page - 1;
 511                         view->end_page = view->current_page;
 512                 }
 513         } else {
 514                 view->start_page = view->current_page;
 515                 view->end_page = view->current_page;
 516         }
 517
 518         best_current_page = MAX (best_current_page, view->start_page);
 519         current_page = ev_page_cache_get_current_page (view->page_cache);
 520
 521         if ((current_page != best_current_page) && (view->pending_scroll == SCROLL_TO_KEEP_POSITION)) {
 522                 view->current_page = best_current_page;
 523                 ev_page_cache_set_current_page (view->page_cache, best_current_page);
 524         }
 525
 526         ev_pixbuf_cache_set_page_range (view->pixbuf_cache,
 527                                         view->start_page,
 528                                         view->end_page,
 529                                         view->rotation,
 530                                         view->scale,
 531                                         view->selection_info.selections);
 532 }
 533
 534 static void
 535 set_scroll_adjustment (EvView *view,
 536                        GtkOrientation  orientation,
 537                        GtkAdjustment  *adjustment)
 538 {
 539         GtkAdjustment **to_set;
 540
 541         if (orientation == GTK_ORIENTATION_HORIZONTAL)
 542                 to_set = &view->hadjustment;
 543         else
 544                 to_set = &view->vadjustment;
 545
 546         if (*to_set != adjustment) {
 547                 if (*to_set) {
 548                         g_signal_handlers_disconnect_by_func (*to_set,
 549                                                               (gpointer) on_adjustment_value_changed,
 550                                                               view);
 551                         g_object_unref (*to_set);
 552                 }
 553
 554                 *to_set = adjustment;
 555                 view_set_adjustment_values (view, orientation);
 556
 557                 if (*to_set) {
 558                         g_object_ref (*to_set);
 559                         g_signal_connect (*to_set, "value_changed",
 560                                           G_CALLBACK (on_adjustment_value_changed), view);
 561                 }
 562         }
 563 }
 564
 565 static void
 566 ev_view_set_scroll_adjustments (GtkLayout      *layout,
 567                                 GtkAdjustment  *hadjustment,
 568                                 GtkAdjustment  *vadjustment)
 569 {
 570         EvView *view = EV_VIEW (layout);
 571
 572         set_scroll_adjustment (view, GTK_ORIENTATION_HORIZONTAL, hadjustment);
 573         set_scroll_adjustment (view, GTK_ORIENTATION_VERTICAL, vadjustment);
 574
 575         on_adjustment_value_changed (NULL, view);
 576 }
 577
 578 static void
 579 add_scroll_binding_keypad (GtkBindingSet  *binding_set,
 580                            guint           keyval,
 581                            GdkModifierType modifiers,
 582                            EvScrollType    scroll,
 583                            gboolean        horizontal)
 584 {
 585   guint keypad_keyval = keyval - GDK_Left + GDK_KP_Left;
 586
 587   gtk_binding_entry_add_signal (binding_set, keyval, modifiers,
 588                                 "binding_activated", 2,
 589                                 EV_TYPE_SCROLL_TYPE, scroll,
 590                                 G_TYPE_BOOLEAN, horizontal);
 591   gtk_binding_entry_add_signal (binding_set, keypad_keyval, modifiers,
 592                                 "binding_activated", 2,
 593                                 EV_TYPE_SCROLL_TYPE, scroll,
 594                                 G_TYPE_BOOLEAN, horizontal);
 595 }
 596
 597 void
 598 ev_view_scroll (EvView        *view,
 599                 EvScrollType   scroll,
 600                 gboolean horizontal)
 601 {
 602         GtkAdjustment *adjustment;
 603         double value, increment;
 604         gboolean first_page = FALSE;
 605         gboolean last_page = FALSE;
 606
 607         view->jump_to_find_result = FALSE;
 608
 609         if (view->presentation || view->sizing_mode == EV_SIZING_BEST_FIT) {
 610                 switch (scroll) {
 611                         case EV_SCROLL_PAGE_BACKWARD:
 612                         case EV_SCROLL_STEP_BACKWARD:
 613                                 ev_view_previous_page (view);
 614                                 break;
 615                         case EV_SCROLL_PAGE_FORWARD:
 616                         case EV_SCROLL_STEP_FORWARD:
 617                                 ev_view_next_page (view);
 618                                 break;
 619                         default:
 620                                 break;
 621                 }
 622                 return;
 623         }
 624
 625         /* Assign values for increment and vertical adjustment */
 626         adjustment = horizontal ? view->hadjustment : view->vadjustment;
 627         increment = adjustment->page_size * 0.75;
 628         value = adjustment->value;
 629
 630         /* Assign boolean for first and last page */
 631         if (view->current_page == 0)
 632                 first_page = TRUE;
 633         if (view->current_page == ev_page_cache_get_n_pages (view->page_cache) - 1)
 634                 last_page = TRUE;
 635
 636         switch (scroll) {
 637                 case EV_SCROLL_PAGE_BACKWARD:
 638                         /* Do not jump backwards if at the first page */
 639                         if (value == (adjustment->lower) && first_page) {
 640                                 /* Do nothing */
 641                                 /* At the top of a page, assign the upper bound limit of previous page */
 642                         } else if (value == (adjustment->lower)) {
 643                                 value = adjustment->upper - adjustment->page_size;
 644                                 ev_view_previous_page (view);
 645                                 /* Jump to the top */
 646                         } else {
 647                                 value = MAX (value - increment, adjustment->lower);
 648                         }
 649                         break;
 650                 case EV_SCROLL_PAGE_FORWARD:
 651                         /* Do not jump forward if at the last page */
 652                         if (value == (adjustment->upper - adjustment->page_size) && last_page) {
 653                                 /* Do nothing */
 654                         /* At the bottom of a page, assign the lower bound limit of next page */
 655                         } else if (value == (adjustment->upper - adjustment->page_size)) {
 656                                 value = 0;
 657                                 ev_view_next_page (view);
 658                         /* Jump to the bottom */
 659                         } else {
 660                                 value = MIN (value + increment, adjustment->upper - adjustment->page_size);
 661                         }
 662                         break;
 663                 case EV_SCROLL_STEP_BACKWARD:
 664                         value -= adjustment->step_increment;
 665                         break;
 666                 case EV_SCROLL_STEP_FORWARD:
 667                         value += adjustment->step_increment;
 668                         break;
 669                 case EV_SCROLL_STEP_DOWN:
 670                         value -= adjustment->step_increment / 10;
 671                         break;
 672                 case EV_SCROLL_STEP_UP:
 673                         value += adjustment->step_increment / 10;
 674                         break;
 675                 default:
 676                         break;
 677         }
 678
 679         value = CLAMP (value, adjustment->lower,
 680                        adjustment->upper - adjustment->page_size);
 681
 682         gtk_adjustment_set_value (adjustment, value);
 683 }
 684
 685 #define MARGIN 5
 686
 687 static void
 688 ensure_rectangle_is_visible (EvView *view, GdkRectangle *rect)
 689 {
 690         GtkWidget *widget = GTK_WIDGET (view);
 691         GtkAdjustment *adjustment;
 692         int value;
 693
 694         view->pending_scroll = SCROLL_TO_FIND_LOCATION;
 695
 696         adjustment = view->vadjustment;
 697
 698         if (rect->y < adjustment->value) {
 699                 value = MAX (adjustment->lower, rect->y - MARGIN);
 700                 gtk_adjustment_set_value (view->vadjustment, value);
 701         } else if (rect->y + rect->height >
 702                    adjustment->value + widget->allocation.height) {
 703                 value = MIN (adjustment->upper, rect->y + rect->height -
 704                              widget->allocation.height + MARGIN);
 705                 gtk_adjustment_set_value (view->vadjustment, value);
 706         }
 707
 708         adjustment = view->hadjustment;
 709
 710         if (rect->x < adjustment->value) {
 711                 value = MAX (adjustment->lower, rect->x - MARGIN);
 712                 gtk_adjustment_set_value (view->hadjustment, value);
 713         } else if (rect->x + rect->height >
 714                    adjustment->value + widget->allocation.width) {
 715                 value = MIN (adjustment->upper, rect->x + rect->width -
 716                              widget->allocation.width + MARGIN);
 717                 gtk_adjustment_set_value (view->hadjustment, value);
 718         }
 719
 720         gtk_widget_queue_resize (GTK_WIDGET (view));
 721 }
 722
 723 /*** Geometry computations ***/
 724
 725 static void
 726 compute_border (EvView *view, int width, int height, GtkBorder *border)
 727 {
 728         if (view->presentation) {
 729                 border->left = 0;
 730                 border->right = 0;
 731                 border->top = 0;
 732                 border->bottom = 0;
 733         } else {
 734                 ev_document_misc_get_page_border_size (width, height, border);
 735         }
 736 }
 737
 738 static void
 739 get_page_y_offset (EvView *view, int page, double zoom, int *y_offset)
 740 {
 741         int max_width, offset;
 742         GtkBorder border;
 743
 744         g_return_if_fail (y_offset != NULL);
 745
 746         ev_page_cache_get_max_width (view->page_cache, view->rotation, zoom, &max_width);
 747
 748         compute_border (view, max_width, max_width, &border);
 749
 750         if (view->dual_page) {
 751                 ev_page_cache_get_height_to_page (view->page_cache, page,
 752                                                   view->rotation, zoom, NULL, &offset);
 753                 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);
 754         } else {
 755                 ev_page_cache_get_height_to_page (view->page_cache, page,
 756                                                   view->rotation, zoom, &offset, NULL);
 757                 offset += (page + 1) * view->spacing + page * (border.top + border.bottom);
 758         }
 759
 760         *y_offset = offset;
 761         return;
 762 }
 763
 764 static gboolean
 765 get_page_extents (EvView       *view,
 766                   gint          page,
 767                   GdkRectangle *page_area,
 768                   GtkBorder    *border)
 769 {
 770         GtkWidget *widget;
 771         int width, height;
 772
 773         widget = GTK_WIDGET (view);
 774
 775         /* Get the size of the page */
 776         ev_page_cache_get_size (view->page_cache, page,
 777                                 view->rotation,
 778                                 view->scale,
 779                                 &width, &height);
 780         compute_border (view, width, height, border);
 781         page_area->width = width + border->left + border->right;
 782         page_area->height = height + border->top + border->bottom;
 783
 784         if (view->presentation) {
 785                 page_area->x = (MAX (0, widget->allocation.width - width))/2;
 786                 page_area->y = (MAX (0, widget->allocation.height - height))/2;
 787         } else if (view->continuous) {
 788                 gint max_width;
 789                 gint x, y;
 790
 791                 ev_page_cache_get_max_width (view->page_cache, view->rotation,
 792                                              view->scale, &max_width);
 793                 max_width = max_width + border->left + border->right;
 794                 /* Get the location of the bounding box */
 795                 if (view->dual_page) {
 796                         x = view->spacing + ((page % 2 == ev_page_cache_get_dual_even_left (view->page_cache)) ? 0 : 1) * (max_width + view->spacing);
 797                         x = x + MAX (0, widget->allocation.width - (max_width * 2 + view->spacing * 3)) / 2;
 798                         if (page % 2 == ev_page_cache_get_dual_even_left (view->page_cache))
 799                                 x = x + (max_width - width - border->left - border->right);
 800                 } else {
 801                         x = view->spacing;
 802                         x = x + MAX (0, widget->allocation.width - (width + view->spacing * 2)) / 2;
 803                 }
 804
 805                 get_page_y_offset (view, page, view->scale, &y);
 806
 807                 page_area->x = x;
 808                 page_area->y = y;
 809         } else {
 810                 gint x, y;
 811                 if (view->dual_page) {
 812                         gint width_2, height_2;
 813                         gint max_width = width;
 814                         gint max_height = height;
 815                         GtkBorder overall_border;
 816                         gint other_page;
 817
 818                         other_page = (page % 2 == ev_page_cache_get_dual_even_left (view->page_cache)) ? page + 1: page - 1;
 819
 820                         /* First, we get the bounding box of the two pages */
 821                         if (other_page < ev_page_cache_get_n_pages (view->page_cache)
 822                             && (0 <= other_page)) {
 823                                 ev_page_cache_get_size (view->page_cache,
 824                                                         other_page,
 825                                                         view->rotation,
 826                                                         view->scale,
 827                                                         &width_2, &height_2);
 828                                 if (width_2 > width)
 829                                         max_width = width_2;
 830                                 if (height_2 > height)
 831                                         max_height = height_2;
 832                         }
 833                         compute_border (view, max_width, max_height, &overall_border);
 834
 835                         /* Find the offsets */
 836                         x = view->spacing;
 837                         y = view->spacing;
 838
 839                         /* Adjust for being the left or right page */
 840                         if (page % 2 == ev_page_cache_get_dual_even_left (view->page_cache))
 841                                 x = x + max_width - width;
 842                         else
 843                                 x = x + (max_width + overall_border.left + overall_border.right) + view->spacing;
 844
 845                         y = y + (max_height - height)/2;
 846
 847                         /* Adjust for extra allocation */
 848                         x = x + MAX (0, widget->allocation.width -
 849                                      ((max_width + overall_border.left + overall_border.right) * 2 + view->spacing * 3))/2;
 850                         y = y + MAX (0, widget->allocation.height - (height + view->spacing * 2))/2;
 851                 } else {
 852                         x = view->spacing;
 853                         y = view->spacing;
 854
 855                         /* Adjust for extra allocation */
 856                         x = x + MAX (0, widget->allocation.width - (width + border->left + border->right + view->spacing * 2))/2;
 857                         y = y + MAX (0, widget->allocation.height - (height + border->top + border->bottom +  view->spacing * 2))/2;
 858                 }
 859
 860                 page_area->x = x;
 861                 page_area->y = y;
 862         }
 863
 864         return TRUE;
 865 }
 866
 867 static void
 868 view_point_to_doc_point (EvView *view,
 869                          GdkPoint *view_point,
 870                          GdkRectangle *page_area,
 871                          double  *doc_point_x,
 872                          double  *doc_point_y)
 873 {
 874         *doc_point_x = (double) (view_point->x - page_area->x) / view->scale;
 875         *doc_point_y = (double) (view_point->y - page_area->y) / view->scale;
 876 }
 877
 878 static void
 879 view_rect_to_doc_rect (EvView *view,
 880                        GdkRectangle *view_rect,
 881                        GdkRectangle *page_area,
 882                        EvRectangle  *doc_rect)
 883 {
 884         doc_rect->x1 = (double) (view_rect->x - page_area->x) / view->scale;
 885         doc_rect->y1 = (double) (view_rect->y - page_area->y) / view->scale;
 886         doc_rect->x2 = doc_rect->x1 + (double) view_rect->width / view->scale;
 887         doc_rect->y2 = doc_rect->y1 + (double) view_rect->height / view->scale;
 888 }
 889
 890 static gboolean
 891 doc_point_to_view_point (EvView       *view,
 892                          int           page,
 893                          EvPoint      *doc_point,
 894                          GdkPoint     *view_point)
 895 {
 896         GdkRectangle page_area;
 897         GtkBorder border;
 898         double x, y, view_x, view_y;
 899         int width, height;
 900
 901         ev_page_cache_get_size (view->page_cache, page,
 902                                 view->rotation,
 903                                 1.0,
 904                                 &width, &height);
 905
 906         if (view->rotation == 0) {
 907                 x = doc_point->x;
 908                 y = doc_point->y;
 909         } else if (view->rotation == 90) {
 910                 x = width - doc_point->y;
 911                 y = doc_point->x;
 912         } else if (view->rotation == 180) {
 913                 x = width - doc_point->x;
 914                 y = height - doc_point->y;
 915         } else if (view->rotation == 270) {
 916                 x = doc_point->y;
 917                 y = height - doc_point->x;
 918         } else {
 919                 g_assert_not_reached ();
 920         }
 921
 922         get_page_extents (view, page, &page_area, &border);
 923
 924         view_x = x * view->scale;
 925         view_y = y * view->scale;
 926         view_point->x = view_x + page_area.x;
 927         view_point->y = view_y + page_area.y;
 928
 929         return (view_x > 0 && view_x <= page_area.width &&
 930                 view_y > 0 && view_y <= page_area.height);
 931 }
 932
 933 static void
 934 doc_rect_to_view_rect (EvView       *view,
 935                        int           page,
 936                        EvRectangle  *doc_rect,
 937                        GdkRectangle *view_rect)
 938 {
 939         GdkRectangle page_area;
 940         GtkBorder border;
 941         double x, y, w, h;
 942         int width, height;
 943
 944         ev_page_cache_get_size (view->page_cache, page,
 945                                 view->rotation,
 946                                 1.0,
 947                                 &width, &height);
 948
 949         if (view->rotation == 0) {
 950                 x = doc_rect->x1;
 951                 y = doc_rect->y1;
 952                 w = doc_rect->x2 - doc_rect->x1;
 953                 h = doc_rect->y2 - doc_rect->y1;
 954         } else if (view->rotation == 90) {
 955                 x = width - doc_rect->y2;
 956                 y = doc_rect->x1;
 957                 w = doc_rect->y2 - doc_rect->y1;
 958                 h = doc_rect->x2 - doc_rect->x1;
 959         } else if (view->rotation == 180) {
 960                 x = width - doc_rect->x2;
 961                 y = height - doc_rect->y2;
 962                 w = doc_rect->x2 - doc_rect->x1;
 963                 h = doc_rect->y2 - doc_rect->y1;
 964         } else if (view->rotation == 270) {
 965                 x = doc_rect->y1;
 966                 y = height - doc_rect->x2;
 967                 w = doc_rect->y2 - doc_rect->y1;
 968                 h = doc_rect->x2 - doc_rect->x1;
 969         } else {
 970                 g_assert_not_reached ();
 971         }
 972
 973         get_page_extents (view, page, &page_area, &border);
 974
 975         view_rect->x = x * view->scale + page_area.x;
 976         view_rect->y = y * view->scale + page_area.y;
 977         view_rect->width = w * view->scale;
 978         view_rect->height = h * view->scale;
 979 }
 980
 981 static void
 982 find_page_at_location (EvView  *view,
 983                        gdouble  x,
 984                        gdouble  y,
 985                        gint    *page,
 986                        gint    *x_offset,
 987                        gint    *y_offset)
 988 {
 989         int i;
 990
 991         if (view->document == NULL)
 992                 return;
 993
 994         g_assert (page);
 995         g_assert (x_offset);
 996         g_assert (y_offset);
 997
 998         for (i = view->start_page; i <= view->end_page; i++) {
 999                 GdkRectangle page_area;
1000                 GtkBorder border;
1001
1002                 if (! get_page_extents (view, i, &page_area, &border))
1003                         continue;
1004
1005                 if ((x >= page_area.x + border.left) &&
1006                     (x < page_area.x + page_area.width - border.right) &&
1007                     (y >= page_area.y + border.top) &&
1008                     (y < page_area.y + page_area.height - border.bottom)) {
1009                         *page = i;
1010                         *x_offset = x - (page_area.x + border.left);
1011                         *y_offset = y - (page_area.y + border.top);
1012                         return;
1013                 }
1014         }
1015
1016         *page = -1;
1017 }
1018
1019 static gboolean
1020 location_in_text (EvView  *view,
1021                   gdouble  x,
1022                   gdouble  y)
1023 {
1024         GdkRegion *region;
1025         gint page = -1;
1026         gint x_offset = 0, y_offset = 0;
1027
1028         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1029
1030         if (page == -1)
1031                 return FALSE;
1032
1033         region = ev_pixbuf_cache_get_text_mapping (view->pixbuf_cache, page);
1034
1035         if (region)
1036                 return gdk_region_point_in (region, x_offset / view->scale, y_offset / view->scale);
1037         else
1038                 return FALSE;
1039 }
1040
1041 static int
1042 ev_view_get_width (EvView *view)
1043 {
1044         return GTK_WIDGET (view)->allocation.width;
1045 }
1046
1047 static int
1048 ev_view_get_height (EvView *view)
1049 {
1050         return GTK_WIDGET (view)->allocation.height;
1051 }
1052
1053 static gboolean
1054 location_in_selected_text (EvView  *view,
1055                            gdouble  x,
1056                            gdouble  y)
1057 {
1058         gint page = -1;
1059         gint x_offset = 0, y_offset = 0;
1060         EvViewSelection *selection;
1061         GList *l = NULL;
1062
1063         for (l = view->selection_info.selections; l != NULL; l = l->next) {
1064                 selection = (EvViewSelection *)l->data;
1065
1066                 find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1067
1068                 if (page != selection->page)
1069                         continue;
1070
1071                 if (selection->covered_region &&
1072                     gdk_region_point_in (selection->covered_region, x_offset, y_offset))
1073                         return TRUE;
1074         }
1075
1076         return FALSE;
1077 }
1078
1079 static gboolean
1080 get_doc_point_from_offset (EvView *view,
1081                            gint    page,
1082                            gint    x_offset,
1083                            gint    y_offset,
1084                            gint   *x_new,
1085                            gint   *y_new)
1086 {
1087         int width, height;
1088         double x, y;
1089
1090         ev_page_cache_get_size (view->page_cache, page,
1091                                 view->rotation,
1092                                 1.0,
1093                                 &width, &height);
1094
1095         x_offset = x_offset / view->scale;
1096         y_offset = y_offset / view->scale;
1097
1098         if (view->rotation == 0) {
1099                 x = x_offset;
1100                 y = y_offset;
1101         } else if (view->rotation == 90) {
1102                 x = y_offset;
1103                 y = width - x_offset;
1104         } else if (view->rotation == 180) {
1105                 x = width - x_offset;
1106                 y = height - y_offset;
1107         } else if (view->rotation == 270) {
1108                 x = height - y_offset;
1109                 y = x_offset;
1110         } else {
1111                 g_assert_not_reached ();
1112         }
1113
1114         *x_new = x;
1115         *y_new = y;
1116
1117         return TRUE;
1118 }
1119
1120 /*** Hyperref ***/
1121 static EvLink *
1122 ev_view_get_link_at_location (EvView  *view,
1123                               gdouble  x,
1124                               gdouble  y)
1125 {
1126         gint page = -1;
1127         gint x_offset = 0, y_offset = 0;
1128         gint x_new = 0, y_new = 0;
1129         GList *link_mapping;
1130
1131         if (!EV_IS_DOCUMENT_LINKS (view->document))
1132                 return NULL;
1133
1134         x += view->scroll_x;
1135         y += view->scroll_y;
1136
1137         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1138
1139         if (page == -1)
1140                 return NULL;
1141
1142
1143         if (get_doc_point_from_offset (view, page, x_offset,
1144                                        y_offset, &x_new, &y_new) == FALSE)
1145                 return NULL;
1146
1147         link_mapping = ev_pixbuf_cache_get_link_mapping (view->pixbuf_cache, page);
1148
1149         if (link_mapping)
1150                 return ev_link_mapping_find (link_mapping, x_new, y_new);
1151         else
1152                 return NULL;
1153 }
1154
1155 static void
1156 goto_fitr_dest (EvView *view, EvLinkDest *dest)
1157 {
1158         EvPoint doc_point;
1159         gdouble zoom, left, top;
1160         gboolean change_left, change_top;
1161
1162         left = ev_link_dest_get_left (dest, &change_left);
1163         top = ev_link_dest_get_top (dest, &change_top);
1164
1165         zoom = zoom_for_size_best_fit (ev_link_dest_get_right (dest) - left,
1166                                        ev_link_dest_get_bottom (dest) - top,
1167                                        ev_view_get_width (view),
1168                                        ev_view_get_height (view), 0, 0);
1169
1170         ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1171         ev_view_set_zoom (view, zoom, FALSE);
1172
1173         doc_point.x = change_left ? left : 0;
1174         doc_point.y = change_top ? top : 0;
1175
1176         view->current_page = ev_link_dest_get_page (dest);
1177         if (change_left || change_top)
1178                 view->pending_point = doc_point;
1179         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1180
1181         gtk_widget_queue_resize (GTK_WIDGET (view));
1182 }
1183
1184 static void
1185 goto_fitv_dest (EvView *view, EvLinkDest *dest)
1186 {
1187         EvPoint doc_point;
1188         int doc_width, doc_height, page;
1189         double zoom, left;
1190         gboolean change_left;
1191
1192         page = ev_link_dest_get_page (dest);
1193         ev_page_cache_get_size (view->page_cache, page, 0, 1.0, &doc_width, &doc_height);
1194
1195         left = ev_link_dest_get_left (dest, &change_left);
1196         doc_point.x = change_left ? left : 0;
1197         doc_point.y = 0;
1198
1199         zoom = zoom_for_size_fit_height (doc_width - doc_point.x , doc_height,
1200                                          ev_view_get_width (view),
1201                                          ev_view_get_height (view), 0);
1202
1203         ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1204         ev_view_set_zoom (view, zoom, FALSE);
1205
1206         view->current_page = page;
1207         if (change_left)
1208                 view->pending_point = doc_point;
1209         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1210
1211         gtk_widget_queue_resize (GTK_WIDGET (view));
1212 }
1213
1214 static void
1215 goto_fith_dest (EvView *view, EvLinkDest *dest)
1216 {
1217         EvPoint doc_point;
1218         int doc_width, doc_height, page;
1219         gdouble zoom, top;
1220         gboolean change_top;
1221
1222         page = ev_link_dest_get_page (dest);
1223         ev_page_cache_get_size (view->page_cache, page, 0, 1.0, &doc_width, &doc_height);
1224
1225         top = ev_link_dest_get_top (dest, &change_top);
1226
1227         doc_point.x = 0;
1228         doc_point.y = change_top ? top : 0;
1229
1230         zoom = zoom_for_size_fit_width (doc_width, top,
1231                                         ev_view_get_width (view),
1232                                         ev_view_get_height (view), 0);
1233
1234         ev_view_set_sizing_mode (view, EV_SIZING_FIT_WIDTH);
1235         ev_view_set_zoom (view, zoom, FALSE);
1236
1237         view->current_page = page;
1238         if (change_top)
1239                 view->pending_point = doc_point;
1240         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1241
1242         gtk_widget_queue_resize (GTK_WIDGET (view));
1243 }
1244
1245 static void
1246 goto_fit_dest (EvView *view, EvLinkDest *dest)
1247 {
1248         double zoom;
1249         int doc_width, doc_height;
1250         int page;
1251
1252         page = ev_link_dest_get_page (dest);
1253         ev_page_cache_get_size (view->page_cache, page, 0, 1.0, &doc_width, &doc_height);
1254
1255         zoom = zoom_for_size_best_fit (doc_width, doc_height, ev_view_get_width (view),
1256                                        ev_view_get_height (view), 0, 0);
1257
1258         ev_view_set_sizing_mode (view, EV_SIZING_BEST_FIT);
1259         ev_view_set_zoom (view, zoom, FALSE);
1260
1261         view->current_page = page;
1262         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1263
1264         gtk_widget_queue_resize (GTK_WIDGET (view));
1265 }
1266
1267 static void
1268 goto_xyz_dest (EvView *view, EvLinkDest *dest)
1269 {
1270         EvPoint doc_point;
1271         gint page;
1272         gdouble zoom, left, top;
1273         gboolean change_zoom, change_left, change_top;
1274
1275         zoom = ev_link_dest_get_zoom (dest, &change_zoom);
1276         page = ev_link_dest_get_page (dest);
1277
1278         if (change_zoom && zoom > 1) {
1279                 ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1280                 ev_view_set_zoom (view, zoom, FALSE);
1281         }
1282
1283         left = ev_link_dest_get_left (dest, &change_left);
1284         top = ev_link_dest_get_top (dest, &change_top);
1285
1286         doc_point.x = change_left ? left : 0;
1287         doc_point.y = change_top ? top : 0;
1288
1289         view->current_page = page;
1290         if (change_left || change_top)
1291                 view->pending_point = doc_point;
1292         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1293
1294         gtk_widget_queue_resize (GTK_WIDGET (view));
1295 }
1296
1297 static void
1298 goto_dest (EvView *view, EvLinkDest *dest)
1299 {
1300         EvLinkDestType type;
1301         int page, n_pages, current_page;
1302
1303         page = ev_link_dest_get_page (dest);
1304         n_pages = ev_page_cache_get_n_pages (view->page_cache);
1305
1306         if (page < 0 || page >= n_pages)
1307                 return;
1308
1309         current_page = view->current_page;
1310
1311         type = ev_link_dest_get_dest_type (dest);
1312
1313         switch (type) {
1314                 case EV_LINK_DEST_TYPE_PAGE:
1315                         ev_page_cache_set_current_page (view->page_cache, page);
1316                         break;
1317                 case EV_LINK_DEST_TYPE_FIT:
1318                         goto_fit_dest (view, dest);
1319                         break;
1320                 case EV_LINK_DEST_TYPE_FITH:
1321                         goto_fith_dest (view, dest);
1322                         break;
1323                 case EV_LINK_DEST_TYPE_FITV:
1324                         goto_fitv_dest (view, dest);
1325                         break;
1326                 case EV_LINK_DEST_TYPE_FITR:
1327                         goto_fitr_dest (view, dest);
1328                         break;
1329                 case EV_LINK_DEST_TYPE_XYZ:
1330                         goto_xyz_dest (view, dest);
1331                         break;
1332                 case EV_LINK_DEST_TYPE_PAGE_LABEL:
1333                         ev_page_cache_set_page_label (view->page_cache, ev_link_dest_get_page_label (dest));
1334                         break;
1335                 default:
1336                         g_assert_not_reached ();
1337         }
1338
1339         if (current_page != view->current_page)
1340                 ev_page_cache_set_current_page (view->page_cache,
1341                                                 view->current_page);
1342 }
1343
1344 static void
1345 ev_view_goto_dest (EvView *view, EvLinkDest *dest)
1346 {
1347         EvLinkDestType type;
1348
1349         type = ev_link_dest_get_dest_type (dest);
1350
1351         if (type == EV_LINK_DEST_TYPE_NAMED) {
1352                 EvLinkDest  *dest2;
1353                 const gchar *named_dest;
1354
1355                 named_dest = ev_link_dest_get_named_dest (dest);
1356                 dest2 = ev_document_links_find_link_dest (EV_DOCUMENT_LINKS (view->document),
1357                                                           named_dest);
1358                 if (dest2) {
1359                         goto_dest (view, dest2);
1360                         g_object_unref (dest2);
1361                 }
1362
1363                 return;
1364         }
1365
1366         goto_dest (view, dest);
1367 }
1368
1369 void
1370 ev_view_handle_link (EvView *view, EvLink *link)
1371 {
1372         EvLinkAction    *action = NULL;
1373         EvLinkActionType type;
1374
1375         action = ev_link_get_action (link);
1376         if (!action)
1377                 return;
1378
1379         type = ev_link_action_get_action_type (action);
1380
1381         switch (type) {
1382                 case EV_LINK_ACTION_TYPE_GOTO_DEST: {
1383                         EvLinkDest *dest;
1384
1385                         g_signal_emit (view, signals[SIGNAL_HANDLE_LINK], 0, link);
1386
1387                         dest = ev_link_action_get_dest (action);
1388                         ev_view_goto_dest (view, dest);
1389                 }
1390                         break;
1391                 case EV_LINK_ACTION_TYPE_GOTO_REMOTE:
1392                 case EV_LINK_ACTION_TYPE_EXTERNAL_URI:
1393                 case EV_LINK_ACTION_TYPE_LAUNCH:
1394                 case EV_LINK_ACTION_TYPE_NAMED:
1395                         g_signal_emit (view, signals[SIGNAL_EXTERNAL_LINK], 0, action);
1396                         break;
1397         }
1398 }
1399
1400 gchar *
1401 ev_view_page_label_from_dest (EvView *view, EvLinkDest *dest)
1402 {
1403         EvLinkDestType type;
1404         gchar *msg = NULL;
1405
1406         type = ev_link_dest_get_dest_type (dest);
1407
1408         switch (type) {
1409                 case EV_LINK_DEST_TYPE_NAMED: {
1410                         EvLinkDest  *dest2;
1411                         const gchar *named_dest;
1412
1413                         named_dest = ev_link_dest_get_named_dest (dest);
1414                         dest2 = ev_document_links_find_link_dest (EV_DOCUMENT_LINKS (view->document),
1415                                                                   named_dest);
1416                         if (dest2) {
1417                                 msg = ev_page_cache_get_page_label (view->page_cache,
1418                                                                     ev_link_dest_get_page (dest2));
1419                                 g_object_unref (dest2);
1420                         }
1421                 }
1422
1423                         break;
1424                 case EV_LINK_DEST_TYPE_PAGE_LABEL: {
1425                         msg = g_strdup (ev_link_dest_get_page_label (dest));
1426                 }
1427                         break;
1428                 default:
1429                         msg = ev_page_cache_get_page_label (view->page_cache,
1430                                                             ev_link_dest_get_page (dest));
1431         }
1432
1433         return msg;
1434 }
1435
1436 static char *
1437 tip_from_action_named (EvLinkAction *action)
1438 {
1439         const gchar *name = ev_link_action_get_name (action);
1440
1441         if (g_ascii_strcasecmp (name, "FirstPage") == 0) {
1442                 return g_strdup (_("Go to first page"));
1443         } else if (g_ascii_strcasecmp (name, "PrevPage") == 0) {
1444                 return g_strdup (_("Go to previous page"));
1445         } else if (g_ascii_strcasecmp (name, "NextPage") == 0) {
1446                 return g_strdup (_("Go to next page"));
1447         } else if (g_ascii_strcasecmp (name, "LastPage") == 0) {
1448                 return g_strdup (_("Go to last page"));
1449         } else if (g_ascii_strcasecmp (name, "GoToPage") == 0) {
1450                 return g_strdup (_("Go to page"));
1451         } else if (g_ascii_strcasecmp (name, "Find") == 0) {
1452                 return g_strdup (_("Find"));
1453         }
1454
1455         return NULL;
1456 }
1457
1458 static char *
1459 tip_from_link (EvView *view, EvLink *link)
1460 {
1461         EvLinkAction *action;
1462         EvLinkActionType type;
1463         char *msg = NULL;
1464         char *page_label;
1465         const char *title;
1466
1467         action = ev_link_get_action (link);
1468         title = ev_link_get_title (link);
1469
1470         if (!action)
1471                 return title ? g_strdup (title) : NULL;
1472
1473         type = ev_link_action_get_action_type (action);
1474
1475         switch (type) {
1476                 case EV_LINK_ACTION_TYPE_GOTO_DEST:
1477                         page_label = ev_view_page_label_from_dest (view,
1478                                                                    ev_link_action_get_dest (action));
1479                         if (page_label) {
1480                                 msg = g_strdup_printf (_("Go to page %s"), page_label);
1481                                 g_free (page_label);
1482                         }
1483                         break;
1484                 case EV_LINK_ACTION_TYPE_GOTO_REMOTE:
1485                         if (title) {
1486                                 msg = g_strdup_printf (_("Go to %s on file “%s”"), title,
1487                                                        ev_link_action_get_filename (action));
1488                         } else {
1489                                 msg = g_strdup_printf (_("Go to file “%s”"),
1490                                                        ev_link_action_get_filename (action));
1491                         }
1492                         break;
1493                 case EV_LINK_ACTION_TYPE_EXTERNAL_URI:
1494                         msg = g_strdup (ev_link_action_get_uri (action));
1495                         break;
1496                 case EV_LINK_ACTION_TYPE_LAUNCH:
1497                         msg = g_strdup_printf (_("Launch %s"),
1498                                                ev_link_action_get_filename (action));
1499                         break;
1500                 case EV_LINK_ACTION_TYPE_NAMED:
1501                         msg = tip_from_action_named (action);
1502                         break;
1503                 default:
1504                         if (title)
1505                                 msg = g_strdup (title);
1506                         break;
1507         }
1508
1509         return msg;
1510 }
1511
1512 static void
1513 ev_view_handle_cursor_over_xy (EvView *view, gint x, gint y)
1514 {
1515         EvLink      *link;
1516         EvFormField *field;
1517
1518         if (view->cursor == EV_VIEW_CURSOR_HIDDEN)
1519                 return;
1520
1521         if (view->drag_info.in_drag) {
1522                 if (view->cursor != EV_VIEW_CURSOR_DRAG)
1523                         ev_view_set_cursor (view, EV_VIEW_CURSOR_DRAG);
1524                 return;
1525         }
1526
1527         if (view->scroll_info.autoscrolling) {
1528                 if (view->cursor != EV_VIEW_CURSOR_AUTOSCROLL)
1529                         ev_view_set_cursor (view, EV_VIEW_CURSOR_AUTOSCROLL);
1530                 return;
1531         }
1532
1533         link = ev_view_get_link_at_location (view, x, y);
1534
1535 #if !GTK_CHECK_VERSION (2, 11, 7)
1536         if (view->link_tooltip == NULL) {
1537                 view->link_tooltip = ev_tooltip_new (GTK_WIDGET (view));
1538         }
1539
1540         if (view->hovered_link != link) {
1541                 view->hovered_link = link;
1542                 ev_tooltip_deactivate (EV_TOOLTIP (view->link_tooltip));
1543         }
1544 #endif
1545
1546         if (link) {
1547 #if GTK_CHECK_VERSION (2, 11, 7)
1548                 g_object_set (view, "has-tooltip", TRUE, NULL);
1549 #else
1550                 char *msg = tip_from_link (view, link);
1551
1552                 if (msg && g_utf8_validate (msg, -1, NULL)) {
1553                         EvTooltip *tooltip = EV_TOOLTIP (view->link_tooltip);
1554
1555                         ev_tooltip_set_position (tooltip, x, y);
1556                         ev_tooltip_set_text (tooltip, msg);
1557                         ev_tooltip_activate (tooltip);
1558                 }
1559                 g_free (msg);
1560 #endif
1561                 ev_view_set_cursor (view, EV_VIEW_CURSOR_LINK);
1562         } else if ((field = ev_view_get_form_field_at_location (view, x, y))) {
1563                 if (field->is_read_only) {
1564                         if (view->cursor == EV_VIEW_CURSOR_LINK ||
1565                             view->cursor == EV_VIEW_CURSOR_IBEAM ||
1566                             view->cursor == EV_VIEW_CURSOR_DRAG)
1567                                 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
1568                 } else if (EV_IS_FORM_FIELD_TEXT (field)) {
1569                         ev_view_set_cursor (view, EV_VIEW_CURSOR_IBEAM);
1570                 } else {
1571                         ev_view_set_cursor (view, EV_VIEW_CURSOR_LINK);
1572                 }
1573         } else if (location_in_text (view, x + view->scroll_x, y + view->scroll_y)) {
1574                 ev_view_set_cursor (view, EV_VIEW_CURSOR_IBEAM);
1575         } else {
1576                 if (view->cursor == EV_VIEW_CURSOR_LINK ||
1577                     view->cursor == EV_VIEW_CURSOR_IBEAM ||
1578                     view->cursor == EV_VIEW_CURSOR_DRAG ||
1579                     view->cursor == EV_VIEW_CURSOR_AUTOSCROLL)
1580                         ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
1581         }
1582 }
1583
1584 /*** Images ***/
1585 static EvImage *
1586 ev_view_get_image_at_location (EvView  *view,
1587                                gdouble  x,
1588                                gdouble  y)
1589 {
1590         gint page = -1;
1591         gint x_offset = 0, y_offset = 0;
1592         gint x_new = 0, y_new = 0;
1593         GList *image_mapping;
1594
1595         if (!EV_IS_DOCUMENT_IMAGES (view->document))
1596                 return NULL;
1597
1598         x += view->scroll_x;
1599         y += view->scroll_y;
1600
1601         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1602
1603         if (page == -1)
1604                 return NULL;
1605
1606         if (get_doc_point_from_offset (view, page, x_offset,
1607                                        y_offset, &x_new, &y_new) == FALSE)
1608                 return NULL;
1609
1610         image_mapping = ev_pixbuf_cache_get_image_mapping (view->pixbuf_cache, page);
1611
1612         if (image_mapping)
1613                 return ev_image_mapping_find (image_mapping, x_new, y_new);
1614         else
1615                 return NULL;
1616 }
1617
1618 /*** Forms ***/
1619 static EvFormField *
1620 ev_view_get_form_field_at_location (EvView  *view,
1621                                     gdouble  x,
1622                                     gdouble  y)
1623 {
1624         gint page = -1;
1625         gint x_offset = 0, y_offset = 0;
1626         gint x_new = 0, y_new = 0;
1627         GList *forms_mapping;
1628
1629         if (!EV_IS_DOCUMENT_FORMS (view->document))
1630                 return NULL;
1631
1632         x += view->scroll_x;
1633         y += view->scroll_y;
1634
1635         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1636
1637         if (page == -1)
1638                 return NULL;
1639
1640         if (get_doc_point_from_offset (view, page, x_offset,
1641                                        y_offset, &x_new, &y_new) == FALSE)
1642                 return NULL;
1643
1644         forms_mapping = ev_pixbuf_cache_get_form_field_mapping (view->pixbuf_cache, page);
1645
1646         if (forms_mapping)
1647                 return ev_form_field_mapping_find (forms_mapping, x_new, y_new);
1648         else
1649                 return NULL;
1650 }
1651
1652 static GdkRegion *
1653 ev_view_form_field_get_region (EvView      *view,
1654                                EvFormField *field)
1655 {
1656         EvRectangle  field_area;
1657         GdkRectangle view_area;
1658         GList       *forms_mapping;
1659
1660         forms_mapping = ev_pixbuf_cache_get_form_field_mapping (view->pixbuf_cache,
1661                                                                 field->page->index);
1662         ev_form_field_mapping_get_area (forms_mapping, field, &field_area);
1663         doc_rect_to_view_rect (view, field->page->index, &field_area, &view_area);
1664         view_area.x -= view->scroll_x;
1665         view_area.y -= view->scroll_y;
1666
1667         return gdk_region_rectangle (&view_area);
1668 }
1669
1670 static gboolean
1671 ev_view_forms_remove_widgets (EvView *view)
1672 {
1673         ev_view_remove_all (view);
1674
1675         return FALSE;
1676 }
1677
1678 static void
1679 ev_view_form_field_destroy (GtkWidget *widget,
1680                             EvView    *view)
1681 {
1682         g_idle_add ((GSourceFunc)ev_view_forms_remove_widgets, view);
1683 }
1684
1685 static GtkWidget *
1686 ev_view_form_field_button_create_widget (EvView      *view,
1687                                          EvFormField *field)
1688 {
1689         EvFormFieldButton *field_button = EV_FORM_FIELD_BUTTON (field);
1690         GdkRegion         *field_region = NULL;
1691
1692         switch (field_button->type) {
1693                 case EV_FORM_FIELD_BUTTON_PUSH:
1694                         return NULL;
1695                 case EV_FORM_FIELD_BUTTON_CHECK:
1696                 case EV_FORM_FIELD_BUTTON_RADIO: {
1697                         gboolean  state;
1698                         GList    *forms_mapping, *l;
1699
1700                         state = ev_document_forms_form_field_button_get_state (EV_DOCUMENT_FORMS (view->document),
1701                                                                                field);
1702
1703                         /* FIXME: it actually depends on NoToggleToOff flags */
1704                         if (field_button->type == EV_FORM_FIELD_BUTTON_RADIO &&
1705                             state && field_button->state)
1706                                 return NULL;
1707
1708                         field_region = ev_view_form_field_get_region (view, field);
1709
1710                         /* For radio buttons and checkbox buttons that are in a set
1711                          * we need to update also the region for the current selected item
1712                          */
1713                         forms_mapping = ev_pixbuf_cache_get_form_field_mapping (view->pixbuf_cache,
1714                                                                                 field->page->index);
1715                         for (l = forms_mapping; l; l = g_list_next (l)) {
1716                                 EvFormField *button = ((EvFormFieldMapping *)(l->data))->field;
1717                                 GdkRegion   *button_region;
1718
1719                                 if (button->id == field->id)
1720                                         continue;
1721
1722                                 /* FIXME: only buttons in the same group should be updated */
1723                                 if (!EV_IS_FORM_FIELD_BUTTON (button) ||
1724                                     EV_FORM_FIELD_BUTTON (button)->type != field_button->type ||
1725                                     EV_FORM_FIELD_BUTTON (button)->state != TRUE)
1726                                         continue;
1727
1728                                 button_region = ev_view_form_field_get_region (view, button);
1729                                 gdk_region_union (field_region, button_region);
1730                                 gdk_region_destroy (button_region);
1731                         }
1732
1733                         ev_document_forms_form_field_button_set_state (EV_DOCUMENT_FORMS (view->document),
1734                                                                        field, !state);
1735                         field_button->state = !state;
1736                 }
1737                         break;
1738         }
1739
1740         ev_pixbuf_cache_reload_page (view->pixbuf_cache,
1741                                      field_region,
1742                                      field->page->index,
1743                                      view->rotation,
1744                                      view->scale);
1745         gdk_region_destroy (field_region);
1746
1747         return NULL;
1748 }
1749
1750 static void
1751 ev_view_form_field_text_save (EvView    *view,
1752                               GtkWidget *widget)
1753 {
1754         EvFormField *field;
1755
1756         if (!view->document)
1757                 return;
1758
1759         field = g_object_get_data (G_OBJECT (widget), "form-field");
1760
1761         if (field->changed) {
1762                 EvFormFieldText *field_text = EV_FORM_FIELD_TEXT (field);
1763                 GdkRegion       *field_region;
1764
1765                 field_region = ev_view_form_field_get_region (view, field);
1766
1767                 ev_document_forms_form_field_text_set_text (EV_DOCUMENT_FORMS (view->document),
1768                                                             field, field_text->text);
1769                 field->changed = FALSE;
1770                 ev_pixbuf_cache_reload_page (view->pixbuf_cache,
1771                                              field_region,
1772                                              field->page->index,
1773                                              view->rotation,
1774                                              view->scale);
1775                 gdk_region_destroy (field_region);
1776         }
1777 }
1778
1779 static void
1780 ev_view_form_field_text_changed (GtkWidget   *widget,
1781                                  EvFormField *field)
1782 {
1783         EvFormFieldText *field_text = EV_FORM_FIELD_TEXT (field);
1784         gchar           *text = NULL;
1785
1786         if (GTK_IS_ENTRY (widget)) {
1787                 text = g_strdup (gtk_entry_get_text (GTK_ENTRY (widget)));
1788         } else if (GTK_IS_TEXT_BUFFER (widget)) {
1789                 GtkTextIter start, end;
1790
1791                 gtk_text_buffer_get_bounds (GTK_TEXT_BUFFER (widget), &start, &end);
1792                 text = gtk_text_buffer_get_text (GTK_TEXT_BUFFER (widget),
1793                                                  &start, &end, FALSE);
1794         }
1795
1796         if (!field_text->text ||
1797             (field_text->text && g_ascii_strcasecmp (field_text->text, text) != 0)) {
1798                 g_free (field_text->text);
1799                 field_text->text = text;
1800                 field->changed = TRUE;
1801         }
1802 }
1803
1804 static GtkWidget *
1805 ev_view_form_field_text_create_widget (EvView      *view,
1806                                        EvFormField *field)
1807 {
1808         EvFormFieldText *field_text = EV_FORM_FIELD_TEXT (field);
1809         GtkWidget       *text = NULL;
1810         gchar           *txt;
1811
1812         txt = ev_document_forms_form_field_text_get_text (EV_DOCUMENT_FORMS (view->document),
1813                                                           field);
1814
1815         switch (field_text->type) {
1816                 case EV_FORM_FIELD_TEXT_FILE_SELECT:
1817                         /* TODO */
1818                 case EV_FORM_FIELD_TEXT_NORMAL:
1819                         text = gtk_entry_new ();
1820                         gtk_entry_set_has_frame (GTK_ENTRY (text), FALSE);
1821                         gtk_entry_set_max_length (GTK_ENTRY (text), field_text->max_len);
1822                         gtk_entry_set_visibility (GTK_ENTRY (text), !field_text->is_password);
1823
1824                         if (txt) {
1825                                 gtk_entry_set_text (GTK_ENTRY (text), txt);
1826                                 g_free (txt);
1827                         }
1828
1829                         g_signal_connect (G_OBJECT (text), "changed",
1830                                           G_CALLBACK (ev_view_form_field_text_changed),
1831                                           field);
1832                         g_signal_connect_after (G_OBJECT (text), "activate",
1833                                                 G_CALLBACK (ev_view_form_field_destroy),
1834                                                 view);
1835                         break;
1836                 case EV_FORM_FIELD_TEXT_MULTILINE: {
1837                         GtkTextBuffer *buffer;
1838
1839                         text = gtk_text_view_new ();
1840                         buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (text));
1841
1842                         if (txt) {
1843                                 gtk_text_buffer_set_text (buffer, txt, -1);
1844                                 g_free (txt);
1845                         }
1846
1847                         g_signal_connect (G_OBJECT (buffer), "changed",
1848                                           G_CALLBACK (ev_view_form_field_text_changed),
1849                                           field);
1850                 }
1851                         break;
1852         }
1853
1854         g_object_weak_ref (G_OBJECT (text),
1855                            (GWeakNotify)ev_view_form_field_text_save,
1856                            view);
1857
1858         return text;
1859 }
1860
1861 static void
1862 ev_view_form_field_choice_save (EvView    *view,
1863                                 GtkWidget *widget)
1864 {
1865         EvFormField *field;
1866
1867         if (!view->document)
1868                 return;
1869
1870         field = g_object_get_data (G_OBJECT (widget), "form-field");
1871
1872         if (field->changed) {
1873                 GList             *l;
1874                 EvFormFieldChoice *field_choice = EV_FORM_FIELD_CHOICE (field);
1875                 GdkRegion         *field_region;
1876
1877                 field_region = ev_view_form_field_get_region (view, field);
1878
1879                 if (field_choice->is_editable) {
1880                         ev_document_forms_form_field_choice_set_text (EV_DOCUMENT_FORMS (view->document),
1881                                                                       field, field_choice->text);
1882                 } else {
1883                         ev_document_forms_form_field_choice_unselect_all (EV_DOCUMENT_FORMS (view->document), field);
1884                         for (l = field_choice->selected_items; l; l = g_list_next (l)) {
1885                                 ev_document_forms_form_field_choice_select_item (EV_DOCUMENT_FORMS (view->document),
1886                                                                                  field,
1887                                                                                  GPOINTER_TO_INT (l->data));
1888                         }
1889                 }
1890                 field->changed = FALSE;
1891                 ev_pixbuf_cache_reload_page (view->pixbuf_cache,
1892                                              field_region,
1893                                              field->page->index,
1894                                              view->rotation,
1895                                              view->scale);
1896                 gdk_region_destroy (field_region);
1897         }
1898 }
1899
1900 static void
1901 ev_view_form_field_choice_changed (GtkWidget   *widget,
1902                                    EvFormField *field)
1903 {
1904         EvFormFieldChoice *field_choice = EV_FORM_FIELD_CHOICE (field);
1905
1906         if (GTK_IS_COMBO_BOX (widget)) {
1907                 gint item;
1908
1909                 item = gtk_combo_box_get_active (GTK_COMBO_BOX (widget));
1910                 if (!field_choice->selected_items ||
1911                     GPOINTER_TO_INT (field_choice->selected_items->data) != item) {
1912                         g_list_free (field_choice->selected_items);
1913                         field_choice->selected_items = NULL;
1914                         field_choice->selected_items = g_list_prepend (field_choice->selected_items,
1915                                                                        GINT_TO_POINTER (item));
1916                         field->changed = TRUE;
1917                 }
1918
1919                 if (GTK_IS_COMBO_BOX_ENTRY (widget)) {
1920                         gchar *text;
1921
1922                         text = gtk_combo_box_get_active_text (GTK_COMBO_BOX (widget));
1923                         if (!field_choice->text ||
1924                             (field_choice->text && g_ascii_strcasecmp (field_choice->text, text) != 0)) {
1925                                 g_free (field_choice->text);
1926                                 field_choice->text = text;
1927                                 field->changed = TRUE;
1928                         }
1929                 }
1930         } else if (GTK_IS_TREE_SELECTION (widget)) {
1931                 GtkTreeSelection *selection = GTK_TREE_SELECTION (widget);
1932                 GtkTreeModel     *model;
1933                 GList            *items, *l;
1934
1935                 items = gtk_tree_selection_get_selected_rows (selection, &model);
1936                 g_list_free (field_choice->selected_items);
1937                 field_choice->selected_items = NULL;
1938
1939                 for (l = items; l && l->data; l = g_list_next (l)) {
1940                         GtkTreeIter  iter;
1941                         GtkTreePath *path = (GtkTreePath *)l->data;
1942                         gint         item;
1943
1944                         gtk_tree_model_get_iter (model, &iter, path);
1945                         gtk_tree_model_get (model, &iter, 1, &item, -1);
1946
1947                         field_choice->selected_items = g_list_prepend (field_choice->selected_items,
1948                                                                        GINT_TO_POINTER (item));
1949
1950                         gtk_tree_path_free (path);
1951                 }
1952
1953                 g_list_free (items);
1954
1955                 field->changed = TRUE;
1956         }
1957 }
1958
1959 static GtkWidget *
1960 ev_view_form_field_choice_create_widget (EvView      *view,
1961                                          EvFormField *field)
1962 {
1963         EvFormFieldChoice *field_choice = EV_FORM_FIELD_CHOICE (field);
1964         GtkWidget         *choice;
1965         GtkTreeModel      *model;
1966         gint               n_items, i;
1967         gint               selected_item = 0;
1968
1969         n_items = ev_document_forms_form_field_choice_get_n_items (EV_DOCUMENT_FORMS (view->document),
1970                                                                    field);
1971         model = GTK_TREE_MODEL (gtk_list_store_new (2, G_TYPE_STRING, G_TYPE_INT));
1972         for (i = 0; i < n_items; i++) {
1973                 GtkTreeIter iter;
1974                 gchar      *item;
1975
1976                 item = ev_document_forms_form_field_choice_get_item (EV_DOCUMENT_FORMS (view->document),
1977                                                                      field, i);
1978                 if (ev_document_forms_form_field_choice_is_item_selected (
1979                             EV_DOCUMENT_FORMS (view->document), field, i)) {
1980                         selected_item = i;
1981                         /* FIXME: we need a get_selected_items function in poppler */
1982                         field_choice->selected_items = g_list_prepend (field_choice->selected_items,
1983                                                                        GINT_TO_POINTER (i));
1984                 }
1985
1986                 if (item) {
1987                         gtk_list_store_append (GTK_LIST_STORE (model), &iter);
1988                         gtk_list_store_set (GTK_LIST_STORE (model), &iter,
1989                                             0, item,
1990                                             1, i,
1991                                             -1);
1992                         g_free (item);
1993                 }
1994         }
1995
1996         if (field_choice->type == EV_FORM_FIELD_CHOICE_LIST) {
1997                 GtkCellRenderer  *renderer;
1998                 GtkWidget        *tree_view;
1999                 GtkTreeSelection *selection;
2000
2001                 tree_view = gtk_tree_view_new_with_model (model);
2002                 gtk_tree_view_set_headers_visible (GTK_TREE_VIEW (tree_view), FALSE);
2003
2004                 selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (tree_view));
2005                 if (field_choice->multi_select) {
2006                         gtk_tree_selection_set_mode (selection, GTK_SELECTION_MULTIPLE);
2007                 }
2008
2009                 /* TODO: set selected items */
2010
2011                 renderer = gtk_cell_renderer_text_new ();
2012                 gtk_tree_view_insert_column_with_attributes (GTK_TREE_VIEW (tree_view),
2013                                                              0,
2014                                                              "choix", renderer,
2015                                                              "text", 0,
2016                                                              NULL);
2017
2018                 choice = gtk_scrolled_window_new (NULL, NULL);
2019                 gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (choice),
2020                                                 GTK_POLICY_AUTOMATIC,
2021                                                 GTK_POLICY_AUTOMATIC);
2022                 gtk_container_add (GTK_CONTAINER (choice), tree_view);
2023                 gtk_widget_show (tree_view);
2024
2025                 g_signal_connect (G_OBJECT (selection), "changed",
2026                                   G_CALLBACK (ev_view_form_field_choice_changed),
2027                                   field);
2028                 g_signal_connect_after (G_OBJECT (selection), "changed",
2029                                         G_CALLBACK (ev_view_form_field_destroy),
2030                                         view);
2031         } else if (field_choice->is_editable) { /* ComboBoxEntry */
2032                 gchar *text;
2033
2034                 choice = gtk_combo_box_entry_new_with_model (model, 0);
2035                 text = ev_document_forms_form_field_choice_get_text (EV_DOCUMENT_FORMS (view->document), field);
2036                 if (text) {
2037                         gtk_entry_set_text (GTK_ENTRY (gtk_bin_get_child (GTK_BIN (choice))), text);
2038                         g_free (text);
2039                 }
2040
2041                 g_signal_connect (G_OBJECT (choice), "changed",
2042                                   G_CALLBACK (ev_view_form_field_choice_changed),
2043                                   field);
2044                 g_signal_connect_after (G_OBJECT (GTK_BIN (choice)->child), "activate",
2045                                         G_CALLBACK (ev_view_form_field_destroy),
2046                                         view);
2047         } else { /* ComboBoxText */
2048                 GtkCellRenderer *renderer;
2049
2050                 choice = gtk_combo_box_new_with_model (model);
2051                 renderer = gtk_cell_renderer_text_new ();
2052                 gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (choice),
2053                                             renderer, TRUE);
2054                 gtk_cell_layout_set_attributes (GTK_CELL_LAYOUT (choice),
2055                                                 renderer,
2056                                                 "text", 0,
2057                                                 NULL);
2058                 gtk_combo_box_set_active (GTK_COMBO_BOX (choice), selected_item);
2059                 gtk_combo_box_popup (GTK_COMBO_BOX (choice));
2060
2061                 g_signal_connect (G_OBJECT (choice), "changed",
2062                                   G_CALLBACK (ev_view_form_field_choice_changed),
2063                                   field);
2064                 g_signal_connect_after (G_OBJECT (choice), "changed",
2065                                         G_CALLBACK (ev_view_form_field_destroy),
2066                                         view);
2067         }
2068
2069         g_object_unref (model);
2070
2071         g_object_weak_ref (G_OBJECT (choice),
2072                            (GWeakNotify)ev_view_form_field_choice_save,
2073                            view);
2074
2075         return choice;
2076 }
2077
2078 static void
2079 ev_view_handle_form_field (EvView      *view,
2080                            EvFormField *field,
2081                            gdouble      x,
2082                            gdouble      y)
2083 {
2084         GtkWidget   *field_widget = NULL;
2085         GList       *form_field_mapping;
2086         EvRectangle  field_area;
2087         GdkRectangle view_area;
2088
2089         if (field->is_read_only)
2090                 return;
2091
2092         if (EV_IS_FORM_FIELD_BUTTON (field)) {
2093                 field_widget = ev_view_form_field_button_create_widget (view, field);
2094         } else if (EV_IS_FORM_FIELD_TEXT (field)) {
2095                 field_widget = ev_view_form_field_text_create_widget (view, field);
2096         } else if (EV_IS_FORM_FIELD_CHOICE (field)) {
2097                 field_widget = ev_view_form_field_choice_create_widget (view, field);
2098         } else if (EV_IS_FORM_FIELD_SIGNATURE (field)) {
2099                 /* TODO */
2100         }
2101
2102         /* Form field doesn't require a widget */
2103         if (!field_widget)
2104                 return;
2105
2106         g_object_set_data_full (G_OBJECT (field_widget), "form-field",
2107                                 g_object_ref (field),
2108                                 (GDestroyNotify)g_object_unref);
2109
2110         form_field_mapping = ev_pixbuf_cache_get_form_field_mapping (view->pixbuf_cache, field->page->index);
2111         ev_form_field_mapping_get_area (form_field_mapping, field, &field_area);
2112
2113         doc_rect_to_view_rect (view, field->page->index, &field_area, &view_area);
2114         view_area.x -= view->scroll_x;
2115         view_area.y -= view->scroll_y;
2116
2117         gtk_layout_put (GTK_LAYOUT (view), field_widget, view_area.x, view_area.y);
2118         gtk_widget_show (field_widget);
2119         gtk_widget_grab_focus (field_widget);
2120 }
2121
2122 /*** GtkWidget implementation ***/
2123
2124 static void
2125 ev_view_size_request_continuous_dual_page (EvView         *view,
2126                                            GtkRequisition *requisition)
2127 {
2128         int max_width;
2129         gint n_pages;
2130         GtkBorder border;
2131
2132         ev_page_cache_get_max_width (view->page_cache, view->rotation,
2133                                      view->scale, &max_width);
2134         compute_border (view, max_width, max_width, &border);
2135
2136         n_pages = ev_page_cache_get_n_pages (view->page_cache) + 1;
2137
2138         requisition->width = (max_width + border.left + border.right) * 2 + (view->spacing * 3);
2139         get_page_y_offset (view, n_pages, view->scale, &requisition->height);
2140
2141         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
2142                 requisition->width = 1;
2143         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
2144                 requisition->width = 1;
2145                 /* FIXME: This could actually be set on one page docs or docs
2146                  * with a strange aspect ratio. */
2147                 /* requisition->height = 1;*/
2148         }
2149 }
2150
2151 static void
2152 ev_view_size_request_continuous (EvView         *view,
2153                                  GtkRequisition *requisition)
2154 {
2155         int max_width;
2156         int n_pages;
2157         GtkBorder border;
2158
2159
2160         ev_page_cache_get_max_width (view->page_cache, view->rotation,
2161                                      view->scale, &max_width);
2162         n_pages = ev_page_cache_get_n_pages (view->page_cache);
2163         compute_border (view, max_width, max_width, &border);
2164
2165         requisition->width = max_width + (view->spacing * 2) + border.left + border.right;
2166         get_page_y_offset (view, n_pages, view->scale, &requisition->height);
2167
2168         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
2169                 requisition->width = 1;
2170         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
2171                 requisition->width = 1;
2172                 /* FIXME: This could actually be set on one page docs or docs
2173                  * with a strange aspect ratio. */
2174                 /* requisition->height = 1;*/
2175         }
2176 }
2177
2178 static void
2179 ev_view_size_request_dual_page (EvView         *view,
2180                                 GtkRequisition *requisition)
2181 {
2182         GtkBorder border;
2183         gint width, height;
2184
2185         /* Find the largest of the two. */
2186         ev_page_cache_get_size (view->page_cache,
2187                                 view->current_page,
2188                                 view->rotation,
2189                                 view->scale,
2190                                 &width, &height);
2191         if (view->current_page + 1 < ev_page_cache_get_n_pages (view->page_cache)) {
2192                 gint width_2, height_2;
2193                 ev_page_cache_get_size (view->page_cache,
2194                                         view->current_page + 1,
2195                                         view->rotation,
2196                                         view->scale,
2197                                         &width_2, &height_2);
2198                 if (width_2 > width) {
2199                         width = width_2;
2200                         height = height_2;
2201                 }
2202         }
2203         compute_border (view, width, height, &border);
2204
2205         requisition->width = ((width + border.left + border.right) * 2) +
2206                 (view->spacing * 3);
2207         requisition->height = (height + border.top + border.bottom) +
2208                 (view->spacing * 2);
2209
2210         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
2211                 requisition->width = 1;
2212         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
2213                 requisition->width = 1;
2214                 requisition->height = 1;
2215         }
2216 }
2217
2218 static void
2219 ev_view_size_request_single_page (EvView         *view,
2220                                   GtkRequisition *requisition)
2221 {
2222         GtkBorder border;
2223         gint width, height;
2224
2225         ev_page_cache_get_size (view->page_cache,
2226                                 view->current_page,
2227                                 view->rotation,
2228                                 view->scale,
2229                                 &width, &height);
2230         compute_border (view, width, height, &border);
2231
2232         requisition->width = width + border.left + border.right + (2 * view->spacing);
2233         requisition->height = height + border.top + border.bottom + (2 * view->spacing);
2234
2235         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
2236                 requisition->width = 1;
2237                 requisition->height = height + border.top + border.bottom + (2 * view->spacing);
2238         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
2239                 requisition->width = 1;
2240                 requisition->height = 1;
2241         }
2242 }
2243
2244 static void
2245 ev_view_size_request (GtkWidget      *widget,
2246                       GtkRequisition *requisition)
2247 {
2248         EvView *view = EV_VIEW (widget);
2249
2250         if (view->document == NULL) {
2251                 requisition->width = 1;
2252                 requisition->height = 1;
2253                 return;
2254         }
2255
2256         if (view->presentation) {
2257                 requisition->width = 1;
2258                 requisition->height = 1;
2259                 return;
2260         }
2261
2262         if (view->continuous && view->dual_page)
2263                 ev_view_size_request_continuous_dual_page (view, requisition);
2264         else if (view->continuous)
2265                 ev_view_size_request_continuous (view, requisition);
2266         else if (view->dual_page)
2267                 ev_view_size_request_dual_page (view, requisition);
2268         else
2269                 ev_view_size_request_single_page (view, requisition);
2270 }
2271
2272 static void
2273 ev_view_size_allocate (GtkWidget      *widget,
2274                        GtkAllocation  *allocation)
2275 {
2276         EvView *view = EV_VIEW (widget);
2277         GList  *children, *l;
2278
2279         GTK_WIDGET_CLASS (ev_view_parent_class)->size_allocate (widget, allocation);
2280
2281         if (view->sizing_mode == EV_SIZING_FIT_WIDTH ||
2282             view->sizing_mode == EV_SIZING_BEST_FIT) {
2283
2284                 g_signal_emit (view, signals[SIGNAL_ZOOM_INVALID], 0);
2285
2286                 ev_view_size_request (widget, &widget->requisition);
2287         }
2288
2289         view_set_adjustment_values (view, GTK_ORIENTATION_HORIZONTAL);
2290         view_set_adjustment_values (view, GTK_ORIENTATION_VERTICAL);
2291
2292         if (view->document)
2293                 view_update_range_and_current_page (view);
2294
2295         view->pending_scroll = SCROLL_TO_KEEP_POSITION;
2296         view->pending_resize = FALSE;
2297
2298         children = gtk_container_get_children (GTK_CONTAINER (widget));
2299         for (l = children; l && l->data; l = g_list_next (l)) {
2300                 EvFormField   *field;
2301                 EvRectangle    field_area;
2302                 GdkRectangle   view_area;
2303                 GList         *form_field_mapping;
2304                 GtkAllocation  child_allocation;
2305                 GtkRequisition child_requisition;
2306                 GtkWidget     *child = (GtkWidget *)l->data;
2307
2308                 field = g_object_get_data (G_OBJECT (child), "form-field");
2309                 if (!field)
2310                         continue;
2311
2312                 form_field_mapping = ev_pixbuf_cache_get_form_field_mapping (view->pixbuf_cache,
2313                                                                              field->page->index);
2314                 ev_form_field_mapping_get_area (form_field_mapping, field, &field_area);
2315
2316                 doc_rect_to_view_rect (view, field->page->index, &field_area, &view_area);
2317                 view_area.x -= view->scroll_x;
2318                 view_area.y -= view->scroll_y;
2319
2320                 gtk_widget_size_request (child, &child_requisition);
2321                 if (child_requisition.width != view_area.width ||
2322                     child_requisition.height != view_area.height)
2323                         gtk_widget_set_size_request (child, view_area.width, view_area.height);
2324
2325                 gtk_container_child_get (GTK_CONTAINER (widget),
2326                                          child,
2327                                          "x", &child_allocation.x,
2328                                          "y", &child_allocation.y,
2329                                          NULL);
2330                 if (child_allocation.x != view_area.x ||
2331                     child_allocation.y != view_area.y) {
2332                         gtk_layout_move (GTK_LAYOUT (widget), child, view_area.x, view_area.y);
2333                 }
2334         }
2335         g_list_free (children);
2336 }
2337
2338 static void
2339 ev_view_realize (GtkWidget *widget)
2340 {
2341         EvView *view = EV_VIEW (widget);
2342
2343         if (GTK_WIDGET_CLASS (ev_view_parent_class)->realize)
2344                 (* GTK_WIDGET_CLASS (ev_view_parent_class)->realize) (widget);
2345
2346         gdk_window_set_events (view->layout.bin_window,
2347                                (gdk_window_get_events (view->layout.bin_window) |
2348                                 GDK_EXPOSURE_MASK |
2349                                 GDK_BUTTON_PRESS_MASK |
2350                                 GDK_BUTTON_RELEASE_MASK |
2351                                 GDK_SCROLL_MASK |
2352                                 GDK_KEY_PRESS_MASK |
2353                                 GDK_POINTER_MOTION_MASK |
2354                                 GDK_POINTER_MOTION_HINT_MASK |
2355                                 GDK_ENTER_NOTIFY_MASK |
2356                                 GDK_LEAVE_NOTIFY_MASK));
2357
2358         if (view->presentation)
2359                 gdk_window_set_background (view->layout.bin_window, &widget->style->black);
2360         else
2361                 gdk_window_set_background (view->layout.bin_window, &widget->style->mid [GTK_STATE_NORMAL]);
2362 }
2363
2364 static gboolean
2365 ev_view_scroll_event (GtkWidget *widget, GdkEventScroll *event)
2366 {
2367         EvView *view = EV_VIEW (widget);
2368         guint state;
2369
2370         state = event->state & gtk_accelerator_get_default_mod_mask ();
2371
2372         if (state == GDK_CONTROL_MASK && view->presentation == FALSE) {
2373                 ev_view_set_sizing_mode (view, EV_SIZING_FREE);
2374
2375                 if (event->direction == GDK_SCROLL_UP ||
2376                     event->direction == GDK_SCROLL_LEFT) {
2377                         if (ev_view_can_zoom_in (view)) {
2378                                 ev_view_zoom_in (view);
2379                         }
2380                 } else {
2381                         if (ev_view_can_zoom_out (view)) {
2382                                 ev_view_zoom_out (view);
2383                         }
2384                 }
2385
2386                 return TRUE;
2387         }
2388
2389         view->jump_to_find_result = FALSE;
2390
2391         /* Shift+Wheel scrolls the in the perpendicular direction */
2392         if (state & GDK_SHIFT_MASK) {
2393                 if (event->direction == GDK_SCROLL_UP)
2394                         event->direction = GDK_SCROLL_LEFT;
2395                 else if (event->direction == GDK_SCROLL_LEFT)
2396                         event->direction = GDK_SCROLL_UP;
2397                 else if (event->direction == GDK_SCROLL_DOWN)
2398                         event->direction = GDK_SCROLL_RIGHT;
2399                 else if (event->direction == GDK_SCROLL_RIGHT)
2400                         event->direction = GDK_SCROLL_DOWN;
2401
2402                 event->state &= ~GDK_SHIFT_MASK;
2403                 state &= ~GDK_SHIFT_MASK;
2404         }
2405
2406         if (state == 0 && view->presentation) {
2407                 switch (event->direction) {
2408                         case GDK_SCROLL_DOWN:
2409                         case GDK_SCROLL_RIGHT:
2410                                 ev_view_next_page (view);
2411                                 break;
2412                         case GDK_SCROLL_UP:
2413                         case GDK_SCROLL_LEFT:
2414                                 ev_view_previous_page (view);
2415                                 break;
2416                 }
2417
2418                 return TRUE;
2419         }
2420
2421         return FALSE;
2422 }
2423
2424 static EvViewSelection *
2425 find_selection_for_page (EvView *view,
2426                          gint    page)
2427 {
2428         GList *list;
2429
2430         for (list = view->selection_info.selections; list != NULL; list = list->next) {
2431                 EvViewSelection *selection;
2432
2433                 selection = (EvViewSelection *) list->data;
2434
2435                 if (selection->page == page)
2436                         return selection;
2437         }
2438
2439         return NULL;
2440 }
2441
2442 static void
2443 draw_end_presentation_page (EvView       *view,
2444                             GdkRectangle *page_area)
2445 {
2446         PangoLayout *layout;
2447         PangoFontDescription *font_desc;
2448         gchar *markup;
2449         const gchar *text = _("End of presentation. Press Escape to exit.");
2450
2451         if (view->presentation_state != EV_PRESENTATION_END)
2452                 return;
2453
2454         layout = gtk_widget_create_pango_layout (GTK_WIDGET (view), NULL);
2455         markup = g_strdup_printf ("<span foreground=\"white\">%s</span>", text);
2456         pango_layout_set_markup (layout, markup, -1);
2457         g_free (markup);
2458
2459         font_desc = pango_font_description_new ();
2460         pango_font_description_set_size (font_desc, 16 * PANGO_SCALE);
2461         pango_layout_set_font_description (layout, font_desc);
2462
2463         gtk_paint_layout (GTK_WIDGET (view)->style,
2464                           view->layout.bin_window,
2465                           GTK_WIDGET_STATE (view),
2466                           FALSE,
2467                           page_area,
2468                           GTK_WIDGET (view),
2469                           NULL,
2470                           page_area->x + 15,
2471                           page_area->y + 15,
2472                           layout);
2473
2474         pango_font_description_free (font_desc);
2475         g_object_unref (layout);
2476 }
2477
2478 static gboolean
2479 ev_view_expose_event (GtkWidget      *widget,
2480                       GdkEventExpose *event)
2481 {
2482         EvView  *view = EV_VIEW (widget);
2483         cairo_t *cr;
2484         gint     i;
2485
2486         if (view->animation && ev_transition_animation_ready (view->animation)) {
2487                 GdkRectangle page_area;
2488                 GtkBorder    border;
2489
2490                 if (get_page_extents (view, view->current_page, &page_area, &border)) {
2491                         cr = gdk_cairo_create (view->layout.bin_window);
2492
2493                         /* normalize to x=0, y=0 */
2494                         cairo_translate (cr, page_area.x, page_area.y);
2495                         page_area.x = page_area.y = 0;
2496
2497                         ev_transition_animation_paint (view->animation, cr, page_area);
2498                         cairo_destroy (cr);
2499                 }
2500
2501                 return TRUE;
2502         }
2503
2504         if (view->presentation) {
2505                 switch (view->presentation_state) {
2506                         case EV_PRESENTATION_END: {
2507                                 GdkRectangle area = {0};
2508
2509                                 area.width = widget->allocation.width;
2510                                 area.height = widget->allocation.height;
2511
2512                                 draw_end_presentation_page (view, &area);
2513                         }
2514                                 return FALSE;
2515                         case EV_PRESENTATION_BLACK:
2516                         case EV_PRESENTATION_WHITE:
2517                                 return FALSE;
2518                         case EV_PRESENTATION_NORMAL:
2519                         default:
2520                                 break;
2521                 }
2522         } else if (view->loading) {
2523                 GdkRectangle area = {0};
2524
2525                 area.width = widget->allocation.width;
2526                 area.height = widget->allocation.height;
2527
2528                 draw_loading_text (view,
2529                                    &area,
2530                                    &(event->area));
2531         }
2532
2533         if (view->document == NULL)
2534                 return FALSE;
2535
2536         cr = gdk_cairo_create (view->layout.bin_window);
2537
2538         for (i = view->start_page; i <= view->end_page; i++) {
2539                 GdkRectangle page_area;
2540                 GtkBorder border;
2541                 gboolean page_ready = TRUE;
2542
2543                 if (!get_page_extents (view, i, &page_area, &border))
2544                         continue;
2545
2546                 page_area.x -= view->scroll_x;
2547                 page_area.y -= view->scroll_y;
2548
2549                 draw_one_page (view, i, cr, &page_area, &border, &(event->area), &page_ready);
2550
2551                 if (page_ready && EV_IS_DOCUMENT_FIND (view->document) && view->highlight_find_results)
2552                         highlight_find_results (view, i);
2553         }
2554
2555         cairo_destroy (cr);
2556
2557         if (GTK_WIDGET_CLASS (ev_view_parent_class)->expose_event)
2558                 (* GTK_WIDGET_CLASS (ev_view_parent_class)->expose_event) (widget, event);
2559
2560         return FALSE;
2561 }
2562
2563 static gboolean
2564 ev_view_do_popup_menu (EvView *view,
2565                        gdouble x,
2566                        gdouble y)
2567 {
2568         EvLink  *link;
2569         EvImage *image;
2570
2571         image = ev_view_get_image_at_location (view, x, y);
2572         if (image) {
2573                 g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, image);
2574                 return TRUE;
2575         }
2576
2577         link = ev_view_get_link_at_location (view, x, y);
2578         if (link) {
2579                 g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, link);
2580                 return TRUE;
2581         }
2582
2583         g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, NULL);
2584
2585         return TRUE;
2586 }
2587
2588 static gboolean
2589 ev_view_popup_menu (GtkWidget *widget)
2590 {
2591         gint x, y;
2592
2593         gtk_widget_get_pointer (widget, &x, &y);
2594         return ev_view_do_popup_menu (EV_VIEW (widget), x, y);
2595 }
2596
2597 #if GTK_CHECK_VERSION (2, 11, 7)
2598 static void
2599 get_link_area (EvView       *view,
2600                gint          x,
2601                gint          y,
2602                EvLink       *link,
2603                GdkRectangle *area)
2604 {
2605         EvRectangle  ev_rect;
2606         GList       *link_mapping;
2607         gint         page;
2608         gint         x_offset = 0, y_offset = 0;
2609
2610         x += view->scroll_x;
2611         y += view->scroll_y;
2612
2613         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
2614
2615         link_mapping = ev_pixbuf_cache_get_link_mapping (view->pixbuf_cache, page);
2616         ev_link_mapping_get_area (link_mapping, link, &ev_rect);
2617
2618         doc_rect_to_view_rect (view, page, &ev_rect, area);
2619         area->y -= view->scroll_y ;
2620 }
2621
2622 static gboolean
2623 ev_view_query_tooltip (GtkWidget         *widget,
2624                        gint               x,
2625                        gint               y,
2626                        gboolean           keyboard_tip,
2627                        GtkTooltip        *tooltip)
2628 {
2629         EvView *view = EV_VIEW (widget);
2630         EvLink *link;
2631         gchar  *text;
2632
2633         link = ev_view_get_link_at_location (view, x, y);
2634         if (!link)
2635                 return FALSE;
2636
2637         text = tip_from_link (view, link);
2638         if (text && g_utf8_validate (text, -1, NULL)) {
2639                 GdkRectangle link_area;
2640
2641                 get_link_area (view, x, y, link, &link_area);
2642                 gtk_tooltip_set_text (tooltip, text);
2643                 gtk_tooltip_set_tip_area (tooltip, &link_area);
2644         }
2645         g_free (text);
2646
2647         return TRUE;
2648 }
2649 #endif /* GTK_CHECK_VERSION (2, 11, 7) */
2650
2651 static void
2652 start_selection_for_event (EvView         *view,
2653                            GdkEventButton *event)
2654 {
2655         EvSelectionStyle style;
2656
2657         clear_selection (view);
2658
2659         view->selection_info.start.x = event->x + view->scroll_x;
2660         view->selection_info.start.y = event->y + view->scroll_y;
2661
2662         switch (event->type) {
2663                 case GDK_2BUTTON_PRESS:
2664                         style = EV_SELECTION_STYLE_WORD;
2665                         break;
2666                 case GDK_3BUTTON_PRESS:
2667                         style = EV_SELECTION_STYLE_LINE;
2668                         break;
2669                 default:
2670                         style = EV_SELECTION_STYLE_GLYPH;
2671                         break;
2672         }
2673
2674         view->selection_info.style = style;
2675 }
2676
2677 static gboolean
2678 ev_view_button_press_event (GtkWidget      *widget,
2679                             GdkEventButton *event)
2680 {
2681         EvView *view = EV_VIEW (widget);
2682
2683         if (!view->document)
2684                 return FALSE;
2685
2686         if (!GTK_WIDGET_HAS_FOCUS (widget)) {
2687                 gtk_widget_grab_focus (widget);
2688         }
2689
2690         view->pressed_button = event->button;
2691         view->selection_info.in_drag = FALSE;
2692
2693         if (view->scroll_info.autoscrolling)
2694                 return TRUE;
2695
2696         switch (event->button) {
2697                 case 1: {
2698                         EvImage *image;
2699                         EvFormField *field;
2700
2701                         if (EV_IS_SELECTION (view->document) && view->selection_info.selections) {
2702                                 if (event->type == GDK_3BUTTON_PRESS) {
2703                                         start_selection_for_event (view, event);
2704                                 } else if (location_in_selected_text (view,
2705                                                                event->x + view->scroll_x,
2706                                                                event->y + view->scroll_y)) {
2707                                         view->selection_info.in_drag = TRUE;
2708                                 } else {
2709                                         start_selection_for_event (view, event);
2710                                 }
2711
2712                                 gtk_widget_queue_draw (widget);
2713                         } else if ((field = ev_view_get_form_field_at_location (view, event->x, event->y))) {
2714                                 ev_view_remove_all (view);
2715                                 ev_view_handle_form_field (view, field, event->x, event->y);
2716                         } else if (!location_in_text (view, event->x + view->scroll_x, event->y + view->scroll_y) &&
2717                                    (image = ev_view_get_image_at_location (view, event->x, event->y))) {
2718                                 if (view->image_dnd_info.image)
2719                                         g_object_unref (view->image_dnd_info.image);
2720                                 view->image_dnd_info.image = g_object_ref (image);
2721                                 view->image_dnd_info.in_drag = TRUE;
2722
2723                                 view->image_dnd_info.start.x = event->x + view->scroll_x;
2724                                 view->image_dnd_info.start.y = event->y + view->scroll_y;
2725                         } else {
2726                                 ev_view_remove_all (view);
2727
2728                                 if (EV_IS_SELECTION (view->document))
2729                                         start_selection_for_event (view, event);
2730                         }
2731                 }
2732                         return TRUE;
2733                 case 2:
2734                         /* use root coordinates as reference point because
2735                          * scrolling changes window relative coordinates */
2736                         view->drag_info.start.x = event->x_root;
2737                         view->drag_info.start.y = event->y_root;
2738                         view->drag_info.hadj = gtk_adjustment_get_value (view->hadjustment);
2739                         view->drag_info.vadj = gtk_adjustment_get_value (view->vadjustment);
2740
2741                         ev_view_set_cursor (view, EV_VIEW_CURSOR_DRAG);
2742
2743                         return TRUE;
2744                 case 3:
2745                         view->scroll_info.start_y = event->y;
2746                         return ev_view_do_popup_menu (view, event->x, event->y);
2747         }
2748
2749         return FALSE;
2750 }
2751
2752 static void
2753 ev_view_remove_all (EvView *view)
2754 {
2755         GList *children, *child;
2756
2757         children = gtk_container_get_children (GTK_CONTAINER (view));
2758         for (child = children; child && child->data; child = g_list_next (child)) {
2759                 gtk_container_remove (GTK_CONTAINER (view),
2760                                       GTK_WIDGET (child->data));
2761         }
2762         g_list_free (children);
2763 }
2764
2765 /*** Drag and Drop ***/
2766 static void
2767 ev_view_drag_data_get (GtkWidget        *widget,
2768                        GdkDragContext   *context,
2769                        GtkSelectionData *selection_data,
2770                        guint             info,
2771                        guint             time)
2772 {
2773         EvView *view = EV_VIEW (widget);
2774
2775         switch (info) {
2776                 case TARGET_DND_TEXT:
2777                         if (EV_IS_SELECTION (view->document) &&
2778                             view->selection_info.selections) {
2779                                 gchar *text;
2780
2781                                 text = get_selected_text (view);
2782                                 gtk_selection_data_set_text (selection_data,
2783                                                              text,
2784                                                              strlen (text));
2785                                 g_free (text);
2786                         }
2787                         break;
2788                 case TARGET_DND_IMAGE:
2789                         if (view->image_dnd_info.image) {
2790                                 GdkPixbuf *pixbuf;
2791
2792                                 ev_document_doc_mutex_lock ();
2793                                 pixbuf = ev_document_images_get_image (EV_DOCUMENT_IMAGES (view->document),
2794                                                                        view->image_dnd_info.image);
2795                                 ev_document_doc_mutex_unlock ();
2796
2797                                 gtk_selection_data_set_pixbuf (selection_data, pixbuf);
2798                                 g_object_unref (pixbuf);
2799                         }
2800                         break;
2801                 case TARGET_DND_URI:
2802                         if (view->image_dnd_info.image) {
2803                                 GdkPixbuf   *pixbuf;
2804                                 const gchar *tmp_uri;
2805                                 gchar      **uris;
2806
2807                                 ev_document_doc_mutex_lock ();
2808                                 pixbuf = ev_document_images_get_image (EV_DOCUMENT_IMAGES (view->document),
2809                                                                        view->image_dnd_info.image);
2810                                 ev_document_doc_mutex_unlock ();
2811
2812                                 tmp_uri = ev_image_save_tmp (view->image_dnd_info.image, pixbuf);
2813                                 g_object_unref (pixbuf);
2814
2815                                 uris = g_new0 (gchar *, 2);
2816                                 uris[0] = (gchar *)tmp_uri;
2817
2818                                 gtk_selection_data_set_uris (selection_data, uris);
2819
2820                                 /* g_free instead of g_strfreev since tmp_uri is const */
2821                                 g_free (uris);
2822                         }
2823         }
2824 }
2825
2826 static gboolean
2827 ev_view_drag_motion (GtkWidget      *widget,
2828                      GdkDragContext *context,
2829                      gint            x,
2830                      gint            y,
2831                      guint           time)
2832 {
2833         if (gtk_drag_get_source_widget (context) == widget)
2834                 gdk_drag_status (context, 0, time);
2835         else
2836                 gdk_drag_status (context, context->suggested_action, time);
2837
2838         return TRUE;
2839 }
2840
2841 static void
2842 ev_view_drag_data_received (GtkWidget          *widget,
2843                             GdkDragContext     *context,
2844                             gint                x,
2845                             gint                y,
2846                             GtkSelectionData   *selection_data,
2847                             guint               info,
2848                             guint               time)
2849 {
2850         gchar  **uris;
2851         gint     i = 0;
2852         GSList  *uri_list = NULL;
2853
2854         uris = gtk_selection_data_get_uris (selection_data);
2855         if (!uris) {
2856                 gtk_drag_finish (context, FALSE, FALSE, time);
2857                 return;
2858         }
2859
2860         for (i = 0; uris[i]; i++) {
2861                 uri_list = g_slist_prepend (uri_list, (gpointer) uris[i]);
2862         }
2863
2864         ev_application_open_uri_list (EV_APP, uri_list,
2865                                       gtk_widget_get_screen (widget),
2866                                       0);
2867         gtk_drag_finish (context, TRUE, FALSE, time);
2868
2869         g_strfreev (uris);
2870         g_slist_free (uri_list);
2871 }
2872
2873
2874 static gboolean
2875 selection_update_idle_cb (EvView *view)
2876 {
2877         compute_selections (view,
2878                             view->selection_info.style,
2879                             &view->selection_info.start,
2880                             &view->motion);
2881         view->selection_update_id = 0;
2882         return FALSE;
2883 }
2884
2885 static gboolean
2886 selection_scroll_timeout_cb (EvView *view)
2887 {
2888         gint x, y, shift = 0;
2889         GtkWidget *widget = GTK_WIDGET (view);
2890
2891         gtk_widget_get_pointer (widget, &x, &y);
2892
2893         if (y > widget->allocation.height) {
2894                 shift = (y - widget->allocation.height) / 2;
2895         } else if (y < 0) {
2896                 shift = y / 2;
2897         }
2898
2899         if (shift)
2900                 gtk_adjustment_set_value (view->vadjustment,
2901                                           CLAMP (view->vadjustment->value + shift,
2902                                           view->vadjustment->lower,
2903                                           view->vadjustment->upper -
2904                                           view->vadjustment->page_size));
2905
2906         if (x > widget->allocation.width) {
2907                 shift = (x - widget->allocation.width) / 2;
2908         } else if (x < 0) {
2909                 shift = x / 2;
2910         }
2911
2912         if (shift)
2913                 gtk_adjustment_set_value (view->hadjustment,
2914                                           CLAMP (view->hadjustment->value + shift,
2915                                           view->hadjustment->lower,
2916                                           view->hadjustment->upper -
2917                                           view->hadjustment->page_size));
2918
2919         return TRUE;
2920 }
2921
2922 static gboolean
2923 ev_view_drag_update_momentum (EvView *view)
2924 {
2925         int i;
2926         if (!view->drag_info.in_drag)
2927                 return FALSE;
2928
2929         for (i = DRAG_HISTORY - 1; i > 0; i--) {
2930                 view->drag_info.buffer[i].x = view->drag_info.buffer[i-1].x;
2931                 view->drag_info.buffer[i].y = view->drag_info.buffer[i-1].y;
2932         }
2933
2934         /* Momentum is a moving average of 10ms granularity over
2935          * the last 100ms with each 10ms stored in buffer.
2936          */
2937
2938         view->drag_info.momentum.x = (view->drag_info.buffer[DRAG_HISTORY - 1].x - view->drag_info.buffer[0].x);
2939         view->drag_info.momentum.y = (view->drag_info.buffer[DRAG_HISTORY - 1].y - view->drag_info.buffer[0].y);
2940
2941         return TRUE;
2942 }
2943
2944 static gboolean
2945 ev_view_scroll_drag_release (EvView *view)
2946 {
2947         gdouble dhadj_value, dvadj_value;
2948         gdouble oldhadjustment, oldvadjustment;
2949
2950         view->drag_info.momentum.x /= 1.2;
2951         view->drag_info.momentum.y /= 1.2; /* Alter these constants to change "friction" */
2952
2953         dhadj_value = view->hadjustment->page_size *
2954                       (gdouble)view->drag_info.momentum.x / GTK_WIDGET (view)->allocation.width;
2955         dvadj_value = view->vadjustment->page_size *
2956                       (gdouble)view->drag_info.momentum.y / GTK_WIDGET (view)->allocation.height;
2957
2958         oldhadjustment = gtk_adjustment_get_value (view->hadjustment);
2959         oldvadjustment = gtk_adjustment_get_value (view->vadjustment);
2960
2961         if (((oldhadjustment + dhadj_value) > (view->hadjustment->upper - view->hadjustment->page_size)) ||
2962            ((oldhadjustment + dhadj_value) < 0))
2963                 view->drag_info.momentum.x *= -0.5; /* 0.5 rather than 1 means the edges absorb some momentum */
2964         if (((oldvadjustment + dvadj_value) > (view->vadjustment->upper - view->vadjustment->page_size)) ||
2965            ((oldvadjustment + dvadj_value) < 0))
2966                 view->drag_info.momentum.y *= -0.5;
2967
2968         gtk_adjustment_set_value (view->hadjustment,
2969                                 MIN (oldhadjustment + dhadj_value,
2970                                 view->hadjustment->upper - view->hadjustment->page_size));
2971         gtk_adjustment_set_value (view->vadjustment,
2972                                 MIN (oldvadjustment + dvadj_value,
2973                                 view->vadjustment->upper - view->vadjustment->page_size));
2974
2975         if (((view->drag_info.momentum.x < 1) && (view->drag_info.momentum.x > -1)) &&
2976            ((view->drag_info.momentum.y < 1) && (view->drag_info.momentum.y > -1)))
2977                 return FALSE;
2978         else
2979                 return TRUE;
2980 }
2981
2982 static gboolean
2983 ev_view_motion_notify_event (GtkWidget      *widget,
2984                              GdkEventMotion *event)
2985 {
2986         EvView *view = EV_VIEW (widget);
2987         gint x, y;
2988
2989         if (!view->document)
2990                 return FALSE;
2991
2992
2993         if (event->is_hint || event->window != view->layout.bin_window) {
2994             gtk_widget_get_pointer (widget, &x, &y);
2995         } else {
2996             x = event->x;
2997             y = event->y;
2998         }
2999
3000         if (view->scroll_info.autoscrolling) {
3001                 view->scroll_info.last_y = y;
3002                 return TRUE;
3003         }
3004
3005         if (view->selection_info.in_drag) {
3006                 if (gtk_drag_check_threshold (widget,
3007                                               view->selection_info.start.x,
3008                                               view->selection_info.start.y,
3009                                               x, y)) {
3010                         GtkTargetList *target_list = gtk_target_list_new (NULL, 0);
3011
3012                         gtk_target_list_add_text_targets (target_list, TARGET_DND_TEXT);
3013
3014                         gtk_drag_begin (widget, target_list,
3015                                         GDK_ACTION_COPY,
3016                                         1, (GdkEvent *)event);
3017
3018                         view->selection_info.in_drag = FALSE;
3019
3020                         gtk_target_list_unref (target_list);
3021
3022                         return TRUE;
3023                 }
3024         } else if (view->image_dnd_info.in_drag) {
3025                 if (gtk_drag_check_threshold (widget,
3026                                               view->selection_info.start.x,
3027                                               view->selection_info.start.y,
3028                                               x, y)) {
3029                         GtkTargetList *target_list = gtk_target_list_new (NULL, 0);
3030
3031                         gtk_target_list_add_uri_targets (target_list, TARGET_DND_URI);
3032                         gtk_target_list_add_image_targets (target_list, TARGET_DND_IMAGE, TRUE);
3033
3034                         gtk_drag_begin (widget, target_list,
3035                                         GDK_ACTION_COPY,
3036                                         1, (GdkEvent *)event);
3037
3038                         view->image_dnd_info.in_drag = FALSE;
3039
3040                         gtk_target_list_unref (target_list);
3041
3042                         return TRUE;
3043                 }
3044         }
3045
3046         /* For the Evince 0.4.x release, we limit selection to un-rotated
3047          * documents only.
3048          */
3049         if (view->pressed_button == 1 && view->rotation == 0) {
3050
3051                 /* Schedule timeout to scroll during selection and additionally
3052                  * scroll once to allow arbitrary speed. */
3053                 if (!view->selection_scroll_id)
3054                     view->selection_scroll_id = g_timeout_add (SCROLL_TIME, (GSourceFunc)selection_scroll_timeout_cb, view);
3055                 else
3056                     selection_scroll_timeout_cb (view);
3057
3058                 view->selection_info.in_selection = TRUE;
3059                 view->motion.x = x + view->scroll_x;
3060                 view->motion.y = y + view->scroll_y;
3061
3062                 /* Queue an idle to handle the motion.  We do this because
3063                  * handling any selection events in the motion could be slower
3064                  * than new motion events reach us.  We always put it in the
3065                  * idle to make sure we catch up and don't visibly lag the
3066                  * mouse. */
3067                 if (!view->selection_update_id)
3068                         view->selection_update_id = g_idle_add ((GSourceFunc)selection_update_idle_cb, view);
3069
3070                 return TRUE;
3071         } else if (view->pressed_button == 2) {
3072                 if (!view->drag_info.in_drag) {
3073                         gboolean start;
3074                         int i;
3075
3076                         start = gtk_drag_check_threshold (widget,
3077                                                           view->drag_info.start.x,
3078                                                           view->drag_info.start.y,
3079                                                           event->x_root,
3080                                                           event->y_root);
3081                         view->drag_info.in_drag = start;
3082                         view->drag_info.drag_timeout_id = g_timeout_add (10,
3083                                 (GSourceFunc)ev_view_drag_update_momentum, view);
3084                         /* Set 100 to choose how long it takes to build up momentum */
3085                         /* Clear out previous momentum info: */
3086                         for (i = 0; i < DRAG_HISTORY; i++) {
3087                                 view->drag_info.buffer[i].x = event->x;
3088                                 view->drag_info.buffer[i].y = event->y;
3089                         }
3090                         view->drag_info.momentum.x = 0;
3091                         view->drag_info.momentum.y = 0;
3092                 }
3093
3094                 if (view->drag_info.in_drag) {
3095                         int dx, dy;
3096                         gdouble dhadj_value, dvadj_value;
3097
3098                         view->drag_info.buffer[0].x = event->x;
3099                         view->drag_info.buffer[0].y = event->y;
3100
3101                         dx = event->x_root - view->drag_info.start.x;
3102                         dy = event->y_root - view->drag_info.start.y;
3103
3104                         dhadj_value = view->hadjustment->page_size *
3105                                       (gdouble)dx / widget->allocation.width;
3106                         dvadj_value = view->vadjustment->page_size *
3107                                       (gdouble)dy / widget->allocation.height;
3108
3109                         /* clamp scrolling to visible area */
3110                         gtk_adjustment_set_value (view->hadjustment,
3111                                                   MIN(view->drag_info.hadj - dhadj_value,
3112                                                       view->hadjustment->upper -
3113                                                       view->hadjustment->page_size));
3114                         gtk_adjustment_set_value (view->vadjustment,
3115                                                   MIN(view->drag_info.vadj - dvadj_value,
3116                                                       view->vadjustment->upper -
3117                                                       view->vadjustment->page_size));
3118
3119                         return TRUE;
3120                 }
3121         } else if (view->pressed_button <= 0) {
3122                 ev_view_handle_cursor_over_xy (view, x, y);
3123                 return TRUE;
3124         }
3125
3126         return FALSE;
3127 }
3128
3129 static gboolean
3130 ev_view_button_release_event (GtkWidget      *widget,
3131                               GdkEventButton *event)
3132 {
3133         EvView *view = EV_VIEW (widget);
3134         EvLink *link = NULL;
3135
3136         view->image_dnd_info.in_drag = FALSE;
3137
3138         if (view->scroll_info.autoscrolling) {
3139                 ev_view_autoscroll_stop (view);
3140                 view->pressed_button = -1;
3141
3142                 return TRUE;
3143         }
3144
3145         if (view->drag_info.in_drag) {
3146                 view->drag_info.release_timeout_id =
3147                         g_timeout_add (20,
3148                                        (GSourceFunc)ev_view_scroll_drag_release, view);
3149         }
3150
3151         if (view->document && !view->drag_info.in_drag && view->pressed_button != 3) {
3152                 link = ev_view_get_link_at_location (view, event->x, event->y);
3153         }
3154
3155         view->drag_info.in_drag = FALSE;
3156
3157         if (view->pressed_button == 2) {
3158                 ev_view_handle_cursor_over_xy (view, event->x, event->y);
3159         }
3160
3161         view->pressed_button = -1;
3162
3163         if (view->selection_scroll_id) {
3164             g_source_remove (view->selection_scroll_id);
3165             view->selection_scroll_id = 0;
3166         }
3167         if (view->selection_update_id) {
3168             g_source_remove (view->selection_update_id);
3169             view->selection_update_id = 0;
3170         }
3171
3172         if (!view->selection_info.in_selection &&
3173             view->selection_info.style != EV_SELECTION_STYLE_GLYPH) {
3174                 compute_selections (view,
3175                                     view->selection_info.style,
3176                                     &(view->selection_info.start),
3177                                     &(view->selection_info.start));
3178         }
3179
3180         if (view->selection_info.selections) {
3181                 clear_link_selected (view);
3182                 ev_view_update_primary_selection (view);
3183
3184                 if (view->selection_info.in_drag) {
3185                         clear_selection (view);
3186                         gtk_widget_queue_draw (widget);
3187                 }
3188
3189                 view->selection_info.in_drag = FALSE;
3190         } else if (link) {
3191                 if (event->button == 2) {
3192                         EvLinkAction    *action;
3193                         EvLinkActionType type;
3194
3195                         action = ev_link_get_action (link);
3196                         if (!action)
3197                                 return FALSE;
3198
3199                         type = ev_link_action_get_action_type (action);
3200                         if (type == EV_LINK_ACTION_TYPE_GOTO_DEST) {
3201                                 g_signal_emit (view,
3202                                                signals[SIGNAL_EXTERNAL_LINK],
3203                                                0, action);
3204                         }
3205                 } else {
3206                         ev_view_handle_link (view, link);
3207                 }
3208         } else if (view->presentation) {
3209                 switch (event->button) {
3210                         case 1:
3211                                 ev_view_next_page (view);
3212                                 return TRUE;
3213                         case 3:
3214                                 ev_view_previous_page (view);
3215                                 return TRUE;
3216                 }
3217         }
3218
3219         return FALSE;
3220 }
3221
3222 /* Goto Window */
3223 /* Cut and paste from gtkwindow.c */
3224 static void
3225 send_focus_change (GtkWidget *widget,
3226                    gboolean   in)
3227 {
3228         GdkEvent *fevent = gdk_event_new (GDK_FOCUS_CHANGE);
3229
3230         g_object_ref (widget);
3231
3232         if (in)
3233                 GTK_WIDGET_SET_FLAGS (widget, GTK_HAS_FOCUS);
3234         else
3235                 GTK_WIDGET_UNSET_FLAGS (widget, GTK_HAS_FOCUS);
3236
3237         fevent->focus_change.type = GDK_FOCUS_CHANGE;
3238         fevent->focus_change.window = g_object_ref (widget->window);
3239         fevent->focus_change.in = in;
3240
3241         gtk_widget_event (widget, fevent);
3242
3243         g_object_notify (G_OBJECT (widget), "has-focus");
3244
3245         g_object_unref (widget);
3246         gdk_event_free (fevent);
3247 }
3248
3249 static void
3250 ev_view_goto_window_hide (EvView *view)
3251 {
3252         /* send focus-in event */
3253         send_focus_change (view->goto_entry, FALSE);
3254         gtk_widget_hide (view->goto_window);
3255         gtk_entry_set_text (GTK_ENTRY (view->goto_entry), "");
3256 }
3257
3258 static gboolean
3259 ev_view_goto_window_delete_event (GtkWidget   *widget,
3260                                   GdkEventAny *event,
3261                                   EvView      *view)
3262 {
3263         ev_view_goto_window_hide (view);
3264
3265         return TRUE;
3266 }
3267
3268 static gboolean
3269 key_is_numeric (guint keyval)
3270 {
3271         return ((keyval >= GDK_0 && keyval <= GDK_9) ||
3272                 (keyval >= GDK_KP_0 && keyval <= GDK_KP_9));
3273 }
3274
3275 static gboolean
3276 ev_view_goto_window_key_press_event (GtkWidget   *widget,
3277                                      GdkEventKey *event,
3278                                      EvView      *view)
3279 {
3280         switch (event->keyval) {
3281                 case GDK_Escape:
3282                 case GDK_Tab:
3283                 case GDK_KP_Tab:
3284                 case GDK_ISO_Left_Tab:
3285                         ev_view_goto_window_hide (view);
3286                         return TRUE;
3287                 case GDK_Return:
3288                 case GDK_KP_Enter:
3289                 case GDK_ISO_Enter:
3290                 case GDK_BackSpace:
3291                 case GDK_Delete:
3292                         return FALSE;
3293                 default:
3294                         if (!key_is_numeric (event->keyval))
3295                                 return TRUE;
3296         }
3297
3298         return FALSE;
3299 }
3300
3301 static gboolean
3302 ev_view_goto_window_button_press_event (GtkWidget      *widget,
3303                                         GdkEventButton *event,
3304                                         EvView         *view)
3305 {
3306         ev_view_goto_window_hide (view);
3307
3308         return TRUE;
3309 }
3310
3311 static void
3312 ev_view_goto_entry_activate (GtkEntry *entry,
3313                              EvView   *view)
3314 {
3315         const gchar *text;
3316         gint         page;
3317
3318         text = gtk_entry_get_text (entry);
3319         page = atoi (text) - 1;
3320
3321         ev_view_goto_window_hide (view);
3322
3323         if (page >= 0 &&
3324             page < ev_page_cache_get_n_pages (view->page_cache))
3325                 ev_page_cache_set_current_page (view->page_cache, page);
3326 }
3327
3328 static void
3329 ev_view_goto_window_create (EvView *view)
3330 {
3331         GtkWidget *frame, *hbox, *toplevel, *label;
3332
3333         toplevel = gtk_widget_get_toplevel (GTK_WIDGET (view));
3334
3335         if (view->goto_window) {
3336                 if (GTK_WINDOW (toplevel)->group)
3337                         gtk_window_group_add_window (GTK_WINDOW (toplevel)->group,
3338                                                      GTK_WINDOW (view->goto_window));
3339                 else if (GTK_WINDOW (view->goto_window)->group)
3340                         gtk_window_group_remove_window (GTK_WINDOW (view->goto_window)->group,
3341                                                         GTK_WINDOW (view->goto_window));
3342                 return;
3343         }
3344
3345         view->goto_window = gtk_window_new (GTK_WINDOW_POPUP);
3346
3347         if (GTK_WINDOW (toplevel)->group)
3348                 gtk_window_group_add_window (GTK_WINDOW (toplevel)->group,
3349                                              GTK_WINDOW (view->goto_window));
3350
3351         gtk_window_set_modal (GTK_WINDOW (view->goto_window), TRUE);
3352
3353         g_signal_connect (view->goto_window, "delete_event",
3354                           G_CALLBACK (ev_view_goto_window_delete_event),
3355                           view);
3356         g_signal_connect (view->goto_window, "key_press_event",
3357                           G_CALLBACK (ev_view_goto_window_key_press_event),
3358                           view);
3359         g_signal_connect (view->goto_window, "button_press_event",
3360                           G_CALLBACK (ev_view_goto_window_button_press_event),
3361                           view);
3362
3363         frame = gtk_frame_new (NULL);
3364         gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_ETCHED_IN);
3365         gtk_container_add (GTK_CONTAINER (view->goto_window), frame);
3366         gtk_widget_show (frame);
3367
3368         hbox = gtk_hbox_new (FALSE, 0);
3369         gtk_container_set_border_width (GTK_CONTAINER (hbox), 3);
3370         gtk_container_add (GTK_CONTAINER (frame), hbox);
3371         gtk_widget_show (hbox);
3372
3373         label = gtk_label_new(_("Jump to page:"));
3374         gtk_box_pack_start (GTK_BOX (hbox), label, TRUE, TRUE, 3);
3375         gtk_widget_show (label);
3376         gtk_widget_realize (label);
3377
3378         view->goto_entry = gtk_entry_new ();
3379         g_signal_connect (view->goto_entry, "activate",
3380                           G_CALLBACK (ev_view_goto_entry_activate),
3381                           view);
3382         gtk_box_pack_start_defaults (GTK_BOX (hbox), view->goto_entry);
3383         gtk_widget_show (view->goto_entry);
3384         gtk_widget_realize (view->goto_entry);
3385 }
3386
3387 static void
3388 ev_view_goto_entry_grab_focus (EvView *view)
3389 {
3390         GtkWidgetClass *entry_parent_class;
3391
3392         entry_parent_class = g_type_class_peek_parent (GTK_ENTRY_GET_CLASS (view->goto_entry));
3393         (entry_parent_class->grab_focus) (view->goto_entry);
3394
3395         send_focus_change (view->goto_entry, TRUE);
3396 }
3397
3398 static void
3399 ev_view_goto_window_send_key_event (EvView   *view,
3400                                     GdkEvent *event)
3401 {
3402         GdkEventKey *new_event;
3403         GdkScreen   *screen;
3404
3405         /* Move goto window off screen */
3406         screen = gtk_widget_get_screen (GTK_WIDGET (view));
3407         gtk_window_move (GTK_WINDOW (view->goto_window),
3408                          gdk_screen_get_width (screen) + 1,
3409                          gdk_screen_get_height (screen) + 1);
3410         gtk_widget_show (view->goto_window);
3411
3412         new_event = (GdkEventKey *) gdk_event_copy (event);
3413         g_object_unref (new_event->window);
3414         new_event->window = g_object_ref (view->goto_window->window);
3415         gtk_widget_realize (view->goto_window);
3416
3417         gtk_widget_event (view->goto_window, (GdkEvent *)new_event);
3418         gdk_event_free ((GdkEvent *)new_event);
3419         gtk_widget_hide (view->goto_window);
3420 }
3421
3422 static gboolean
3423 ev_view_key_press_event (GtkWidget   *widget,
3424                          GdkEventKey *event)
3425 {
3426         EvView *view = EV_VIEW (widget);
3427         EvPresentationState current;
3428
3429         if (!view->document)
3430                 return FALSE;
3431
3432         if (!view->presentation ||
3433             view->presentation_state == EV_PRESENTATION_END)
3434                 return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
3435
3436
3437         current = view->presentation_state;
3438
3439         switch (event->keyval) {
3440                 case GDK_b:
3441                 case GDK_B:
3442                 case GDK_period:
3443                 case GDK_KP_Decimal:
3444                         view->presentation_state =
3445                                 (view->presentation_state == EV_PRESENTATION_BLACK) ?
3446                                 EV_PRESENTATION_NORMAL : EV_PRESENTATION_BLACK;
3447                         break;
3448                 case GDK_w:
3449                 case GDK_W:
3450                         view->presentation_state =
3451                                 (view->presentation_state == EV_PRESENTATION_WHITE) ?
3452                                 EV_PRESENTATION_NORMAL : EV_PRESENTATION_WHITE;
3453                         break;
3454                 default:
3455                         if (view->presentation_state == EV_PRESENTATION_BLACK ||
3456                             view->presentation_state == EV_PRESENTATION_WHITE) {
3457                                 view->presentation_state = EV_PRESENTATION_NORMAL;
3458                         }
3459         }
3460
3461         if (current == view->presentation_state) {
3462                 if (ev_page_cache_get_n_pages (view->page_cache) > 1 &&
3463                     key_is_numeric (event->keyval)) {
3464                         gint x, y;
3465
3466                         ev_view_goto_window_create (view);
3467                         ev_view_goto_window_send_key_event (view, (GdkEvent *)event);
3468                         gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
3469                         gtk_window_move (GTK_WINDOW (view->goto_window), x, y);
3470                         gtk_widget_show (view->goto_window);
3471                         ev_view_goto_entry_grab_focus (view);
3472
3473                         return TRUE;
3474                 }
3475
3476                 return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
3477         }
3478
3479         switch (view->presentation_state) {
3480                 case EV_PRESENTATION_NORMAL:
3481                 case EV_PRESENTATION_BLACK:
3482                         gdk_window_set_background (view->layout.bin_window,
3483                                                    &widget->style->black);
3484                         break;
3485                 case EV_PRESENTATION_WHITE:
3486                         gdk_window_set_background (view->layout.bin_window,
3487                                                    &widget->style->white);
3488                         break;
3489                 default:
3490                         return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
3491         }
3492
3493         gtk_widget_queue_draw (widget);
3494         return TRUE;
3495 }
3496
3497 static gint
3498 ev_view_focus_in (GtkWidget     *widget,
3499                   GdkEventFocus *event)
3500 {
3501         if (EV_VIEW (widget)->pixbuf_cache)
3502                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
3503         gtk_widget_queue_draw (widget);
3504
3505         return FALSE;
3506 }
3507
3508 static gint
3509 ev_view_focus_out (GtkWidget     *widget,
3510                      GdkEventFocus *event)
3511 {
3512         if (EV_VIEW (widget)->goto_window)
3513                 ev_view_goto_window_hide (EV_VIEW (widget));
3514
3515         if (EV_VIEW (widget)->pixbuf_cache)
3516                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
3517         gtk_widget_queue_draw (widget);
3518
3519         return FALSE;
3520 }
3521
3522 static gboolean
3523 ev_view_leave_notify_event (GtkWidget *widget, GdkEventCrossing   *event)
3524 {
3525         EvView *view = EV_VIEW (widget);
3526
3527         if (view->cursor != EV_VIEW_CURSOR_NORMAL)
3528                 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
3529
3530 #if !GTK_CHECK_VERSION (2, 11, 7)
3531         if (view->link_tooltip) {
3532                 view->hovered_link = NULL;
3533                 ev_tooltip_deactivate (EV_TOOLTIP (view->link_tooltip));
3534         }
3535 #endif
3536
3537         return FALSE;
3538 }
3539
3540 static gboolean
3541 ev_view_enter_notify_event (GtkWidget *widget, GdkEventCrossing   *event)
3542 {
3543         EvView *view = EV_VIEW (widget);
3544
3545         ev_view_handle_cursor_over_xy (view, event->x, event->y);
3546
3547         return FALSE;
3548 }
3549
3550 static void
3551 ev_view_style_set (GtkWidget *widget,
3552                    GtkStyle  *old_style)
3553 {
3554         if (EV_VIEW (widget)->pixbuf_cache)
3555                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
3556
3557         GTK_WIDGET_CLASS (ev_view_parent_class)->style_set (widget, old_style);
3558 }
3559
3560 /*** Drawing ***/
3561
3562 static guint32
3563 ev_gdk_color_to_rgb (const GdkColor *color)
3564 {
3565   guint32 result;
3566   result = (0xff0000 | (color->red & 0xff00));
3567   result <<= 8;
3568   result |= ((color->green & 0xff00) | (color->blue >> 8));
3569   return result;
3570 }
3571
3572 static void
3573 draw_rubberband (GtkWidget *widget, GdkWindow *window,
3574                  const GdkRectangle *rect, guchar alpha)
3575 {
3576         GdkGC *gc;
3577         GdkPixbuf *pixbuf;
3578         GdkColor *fill_color_gdk;
3579         guint fill_color;
3580
3581         fill_color_gdk = gdk_color_copy (&GTK_WIDGET (widget)->style->base[GTK_STATE_SELECTED]);
3582         fill_color = ev_gdk_color_to_rgb (fill_color_gdk) << 8 | alpha;
3583
3584         pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE, 8,
3585                                  rect->width, rect->height);
3586         gdk_pixbuf_fill (pixbuf, fill_color);
3587
3588         gdk_draw_pixbuf (window, NULL, pixbuf,
3589                          0, 0,
3590                          rect->x - EV_VIEW (widget)->scroll_x, rect->y - EV_VIEW (widget)->scroll_y,
3591                          rect->width, rect->height,
3592                          GDK_RGB_DITHER_NONE,
3593                          0, 0);
3594
3595         g_object_unref (pixbuf);
3596
3597         gc = gdk_gc_new (window);
3598         gdk_gc_set_rgb_fg_color (gc, fill_color_gdk);
3599         gdk_draw_rectangle (window, gc, FALSE,
3600                             rect->x - EV_VIEW (widget)->scroll_x, rect->y - EV_VIEW (widget)->scroll_y,
3601                             rect->width - 1,
3602                             rect->height - 1);
3603         g_object_unref (gc);
3604
3605         gdk_color_free (fill_color_gdk);
3606 }
3607
3608
3609 static void
3610 highlight_find_results (EvView *view, int page)
3611 {
3612         EvDocumentFind *find;
3613         int i, results = 0;
3614
3615         find = EV_DOCUMENT_FIND (view->document);
3616
3617         results = ev_document_find_get_n_results (find, page);
3618
3619         for (i = 0; i < results; i++) {
3620                 EvRectangle rectangle;
3621                 GdkRectangle view_rectangle;
3622                 guchar alpha;
3623
3624                 if (i == view->find_result && page == view->current_page) {
3625                         alpha = 0x90;
3626                 } else {
3627                         alpha = 0x20;
3628                 }
3629
3630                 ev_document_find_get_result (find, page, i, &rectangle);
3631                 doc_rect_to_view_rect (view, page, &rectangle, &view_rectangle);
3632                 draw_rubberband (GTK_WIDGET (view), view->layout.bin_window,
3633                                  &view_rectangle, alpha);
3634         }
3635 }
3636
3637 static void
3638 draw_loading_text (EvView       *view,
3639                    GdkRectangle *page_area,
3640                    GdkRectangle *expose_area)
3641 {
3642         cairo_t *cr;
3643         gint     width, height;
3644
3645         if (!view->loading_text) {
3646                 const gchar *loading_text = _("Loading...");
3647                 PangoLayout *layout;
3648                 PangoFontDescription *font_desc;
3649                 PangoRectangle logical_rect;
3650                 gint target_width;
3651                 gdouble real_scale;
3652
3653                 ev_document_fc_mutex_lock ();
3654
3655                 layout = gtk_widget_create_pango_layout (GTK_WIDGET (view), loading_text);
3656
3657                 font_desc = pango_font_description_new ();
3658
3659                 /* We set the font to be 10 points, get the size, and scale appropriately */
3660                 pango_font_description_set_size (font_desc, 10 * PANGO_SCALE);
3661                 pango_layout_set_font_description (layout, font_desc);
3662                 pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
3663
3664                 target_width = MAX (page_area->width / 2, 1);
3665                 real_scale = ((double)target_width / (double) logical_rect.width) * (PANGO_SCALE * 10);
3666                 pango_font_description_set_size (font_desc, (int)real_scale);
3667                 pango_layout_set_font_description (layout, font_desc);
3668                 pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
3669
3670                 view->loading_text = cairo_image_surface_create (CAIRO_FORMAT_ARGB32,
3671                                                                  logical_rect.width,
3672                                                                  logical_rect.height);
3673                 cr = cairo_create (view->loading_text);
3674                 cairo_set_source_rgb (cr,
3675                                       155 / (double)255,
3676                                       155 / (double)255,
3677                                       155 / (double)255);
3678                 pango_cairo_show_layout (cr, layout);
3679                 cairo_destroy (cr);
3680
3681                 pango_font_description_free (font_desc);
3682                 g_object_unref (layout);
3683
3684                 ev_document_fc_mutex_unlock ();
3685         }
3686
3687         width = (page_area->width - cairo_image_surface_get_width (view->loading_text)) / 2;
3688         height = (page_area->height - cairo_image_surface_get_height (view->loading_text)) / 2;
3689
3690         cr = gdk_cairo_create (view->layout.bin_window);
3691         cairo_translate (cr,
3692                          page_area->x + width,
3693                          page_area->y + height);
3694         cairo_set_source_surface (cr, view->loading_text, 0, 0);
3695         cairo_paint (cr);
3696         cairo_destroy (cr);
3697 }
3698
3699 static void
3700 draw_one_page (EvView       *view,
3701                gint          page,
3702                cairo_t      *cr,
3703                GdkRectangle *page_area,
3704                GtkBorder    *border,
3705                GdkRectangle *expose_area,
3706                gboolean     *page_ready)
3707 {
3708         GdkRectangle overlap;
3709         GdkRectangle real_page_area;
3710
3711         g_assert (view->document);
3712
3713         if (! gdk_rectangle_intersect (page_area, expose_area, &overlap))
3714                 return;
3715
3716         /* Render the document itself */
3717         real_page_area = *page_area;
3718
3719         real_page_area.x += border->left;
3720         real_page_area.y += border->top;
3721         real_page_area.width -= (border->left + border->right);
3722         real_page_area.height -= (border->top + border->bottom);
3723         *page_ready = TRUE;
3724
3725         if (!view->presentation) {
3726                 gint current_page;
3727
3728                 current_page = ev_page_cache_get_current_page (view->page_cache);
3729                 ev_document_misc_paint_one_page (view->layout.bin_window,
3730                                                  GTK_WIDGET (view),
3731                                                  page_area, border,
3732                                                  page == current_page);
3733         }
3734
3735         if (gdk_rectangle_intersect (&real_page_area, expose_area, &overlap)) {
3736                 gint             width, height;
3737                 gint             page_width, page_height;
3738                 cairo_surface_t *page_surface = NULL;
3739                 gint             selection_width, selection_height;
3740                 cairo_surface_t *selection_surface = NULL;
3741
3742                 page_surface = ev_pixbuf_cache_get_surface (view->pixbuf_cache, page);
3743
3744                 if (!page_surface) {
3745                         if (!view->presentation) {
3746                                 draw_loading_text (view,
3747                                                    &real_page_area,
3748                                                    expose_area);
3749                         }
3750
3751                         *page_ready = FALSE;
3752
3753                         return;
3754                 }
3755
3756                 ev_page_cache_get_size (view->page_cache,
3757                                         page, view->rotation,
3758                                         view->scale,
3759                                         &width, &height);
3760
3761                 page_width = cairo_image_surface_get_width (page_surface);
3762                 page_height = cairo_image_surface_get_height (page_surface);
3763
3764                 cairo_save (cr);
3765                 cairo_translate (cr, overlap.x, overlap.y);
3766
3767                 if (width != page_width || height != page_height) {
3768                         cairo_pattern_set_filter (cairo_get_source (cr),
3769                                                   CAIRO_FILTER_FAST);
3770                         cairo_scale (cr,
3771                                      (gdouble)width / page_width,
3772                                      (gdouble)height / page_height);
3773                 }
3774
3775                 cairo_surface_set_device_offset (page_surface,
3776                                                  overlap.x - real_page_area.x,
3777                                                  overlap.y - real_page_area.y);
3778                 cairo_set_source_surface (cr, page_surface, 0, 0);
3779                 cairo_paint (cr);
3780                 cairo_restore (cr);
3781
3782                 /* Get the selection pixbuf iff we have something to draw */
3783                 if (find_selection_for_page (view, page) &&
3784                     view->selection_mode == EV_VIEW_SELECTION_TEXT) {
3785                         selection_surface =
3786                                 ev_pixbuf_cache_get_selection_surface (view->pixbuf_cache,
3787                                                                        page,
3788                                                                        view->scale,
3789                                                                        NULL);
3790                 }
3791
3792                 if (!selection_surface) {
3793                         return;
3794                 }
3795
3796                 selection_width = cairo_image_surface_get_width (selection_surface);
3797                 selection_height = cairo_image_surface_get_height (selection_surface);
3798
3799                 cairo_save (cr);
3800                 cairo_translate (cr, overlap.x, overlap.y);
3801
3802                 if (width != selection_width || height != selection_height) {
3803                         cairo_pattern_set_filter (cairo_get_source (cr),
3804                                                   CAIRO_FILTER_FAST);
3805                         cairo_scale (cr,
3806                                      (gdouble)width / selection_width,
3807                                      (gdouble)height / selection_height);
3808                 }
3809
3810                 cairo_surface_set_device_offset (selection_surface,
3811                                                  overlap.x - real_page_area.x,
3812                                                  overlap.y - real_page_area.y);
3813                 cairo_set_source_surface (cr, selection_surface, 0, 0);
3814                 cairo_paint (cr);
3815                 cairo_restore (cr);
3816         }
3817 }
3818
3819 /*** GObject functions ***/
3820
3821 static void
3822 ev_view_finalize (GObject *object)
3823 {
3824         EvView *view = EV_VIEW (object);
3825
3826         g_free (view->find_status);
3827
3828         clear_selection (view);
3829         clear_link_selected (view);
3830
3831         if (view->image_dnd_info.image)
3832                 g_object_unref (view->image_dnd_info.image);
3833         view->image_dnd_info.image = NULL;
3834
3835         G_OBJECT_CLASS (ev_view_parent_class)->finalize (object);
3836 }
3837
3838 static void
3839 ev_view_destroy (GtkObject *object)
3840 {
3841         EvView *view = EV_VIEW (object);
3842
3843         if (view->document) {
3844                 g_object_unref (view->document);
3845                 view->document = NULL;
3846         }
3847
3848         if (view->pixbuf_cache) {
3849                 g_object_unref (view->pixbuf_cache);
3850                 view->pixbuf_cache = NULL;
3851         }
3852
3853 #if !GTK_CHECK_VERSION (2, 11, 7)
3854         if (view->link_tooltip) {
3855                 gtk_widget_destroy (view->link_tooltip);
3856                 view->link_tooltip = NULL;
3857         }
3858 #endif
3859         if (view->goto_window) {
3860                 gtk_widget_destroy (view->goto_window);
3861                 view->goto_window = NULL;
3862                 view->goto_entry = NULL;
3863         }
3864
3865         if (view->selection_scroll_id) {
3866             g_source_remove (view->selection_scroll_id);
3867             view->selection_scroll_id = 0;
3868         }
3869
3870         if (view->selection_update_id) {
3871             g_source_remove (view->selection_update_id);
3872             view->selection_update_id = 0;
3873         }
3874
3875         if (view->loading_text) {
3876                 cairo_surface_destroy (view->loading_text);
3877                 view->loading_text = NULL;
3878         }
3879
3880         if (view->scroll_info.timeout_id) {
3881             g_source_remove (view->scroll_info.timeout_id);
3882             view->scroll_info.timeout_id = 0;
3883         }
3884
3885         if (view->drag_info.drag_timeout_id) {
3886                 g_source_remove (view->drag_info.drag_timeout_id);
3887                 view->drag_info.drag_timeout_id = 0;
3888         }
3889
3890         if (view->drag_info.release_timeout_id) {
3891                 g_source_remove (view->drag_info.release_timeout_id);
3892                 view->drag_info.release_timeout_id = 0;
3893         }
3894
3895         ev_view_presentation_transition_stop (view);
3896
3897         ev_view_set_scroll_adjustments (GTK_LAYOUT (view), NULL, NULL);
3898
3899         GTK_OBJECT_CLASS (ev_view_parent_class)->destroy (object);
3900 }
3901
3902 static void
3903 ev_view_set_property (GObject      *object,
3904                       guint         prop_id,
3905                       const GValue *value,
3906                       GParamSpec   *pspec)
3907 {
3908         EvView *view = EV_VIEW (object);
3909
3910         switch (prop_id) {
3911                 case PROP_CONTINUOUS:
3912                         ev_view_set_continuous (view, g_value_get_boolean (value));
3913                         break;
3914                 case PROP_DUAL_PAGE:
3915                         ev_view_set_dual_page (view, g_value_get_boolean (value));
3916                         break;
3917                 case PROP_FULLSCREEN:
3918                         ev_view_set_fullscreen (view, g_value_get_boolean (value));
3919                         break;
3920                 case PROP_PRESENTATION:
3921                         ev_view_set_presentation (view, g_value_get_boolean (value));
3922                         break;
3923                 case PROP_SIZING_MODE:
3924                         ev_view_set_sizing_mode (view, g_value_get_enum (value));
3925                         break;
3926                 case PROP_ZOOM:
3927                         ev_view_set_zoom (view, g_value_get_double (value), FALSE);
3928                         break;
3929                 case PROP_ROTATION:
3930                         ev_view_set_rotation (view, g_value_get_int (value));
3931                         break;
3932                 default:
3933                         G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
3934         }
3935 }
3936
3937 static AtkObject *
3938 ev_view_get_accessible (GtkWidget *widget)
3939 {
3940         static gboolean first_time = TRUE;
3941
3942         if (first_time) {
3943                 AtkObjectFactory *factory;
3944                 AtkRegistry *registry;
3945                 GType derived_type;
3946                 GType derived_atk_type;
3947
3948                 /*
3949                  * Figure out whether accessibility is enabled by looking at the
3950                  * type of the accessible object which would be created for
3951                  * the parent type of EvView.
3952                  */
3953                 derived_type = g_type_parent (EV_TYPE_VIEW);
3954
3955                 registry = atk_get_default_registry ();
3956                 factory = atk_registry_get_factory (registry,
3957                                                     derived_type);
3958                 derived_atk_type = atk_object_factory_get_accessible_type (factory);
3959                 if (g_type_is_a (derived_atk_type, GTK_TYPE_ACCESSIBLE))
3960                         atk_registry_set_factory_type (registry,
3961                                                        EV_TYPE_VIEW,
3962                                                        ev_view_accessible_factory_get_type ());
3963                 first_time = FALSE;
3964         }
3965         return GTK_WIDGET_CLASS (ev_view_parent_class)->get_accessible (widget);
3966 }
3967
3968 static void
3969 ev_view_get_property (GObject *object,
3970                       guint prop_id,
3971                       GValue *value,
3972                       GParamSpec *pspec)
3973 {
3974         EvView *view = EV_VIEW (object);
3975
3976         switch (prop_id) {
3977                 case PROP_FIND_STATUS:
3978                         g_value_set_string (value, view->find_status);
3979                         break;
3980                 case PROP_CONTINUOUS:
3981                         g_value_set_boolean (value, view->continuous);
3982                         break;
3983                 case PROP_DUAL_PAGE:
3984                         g_value_set_boolean (value, view->dual_page);
3985                         break;
3986                 case PROP_FULLSCREEN:
3987                         g_value_set_boolean (value, view->fullscreen);
3988                         break;
3989                 case PROP_PRESENTATION:
3990                         g_value_set_boolean (value, view->presentation);
3991                         break;
3992                 case PROP_SIZING_MODE:
3993                         g_value_set_enum (value, view->sizing_mode);
3994                         break;
3995                 case PROP_ZOOM:
3996                         g_value_set_double (value, view->scale);
3997                         break;
3998                 case PROP_ROTATION:
3999                         g_value_set_int (value, view->rotation);
4000                         break;
4001                 case PROP_HAS_SELECTION:
4002                         g_value_set_boolean (value,
4003                                              view->selection_info.selections != NULL);
4004                         break;
4005                 default:
4006                         G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
4007         }
4008 }
4009
4010 static void
4011 ev_view_class_init (EvViewClass *class)
4012 {
4013         GObjectClass *object_class = G_OBJECT_CLASS (class);
4014         GtkObjectClass *gtk_object_class = GTK_OBJECT_CLASS (class);
4015         GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
4016         GtkLayoutClass *layout_class = GTK_LAYOUT_CLASS (class);
4017         GtkBindingSet *binding_set;
4018
4019         object_class->finalize = ev_view_finalize;
4020         object_class->set_property = ev_view_set_property;
4021         object_class->get_property = ev_view_get_property;
4022
4023         widget_class->expose_event = ev_view_expose_event;
4024         widget_class->button_press_event = ev_view_button_press_event;
4025         widget_class->motion_notify_event = ev_view_motion_notify_event;
4026         widget_class->button_release_event = ev_view_button_release_event;
4027         widget_class->key_press_event = ev_view_key_press_event;
4028         widget_class->focus_in_event = ev_view_focus_in;
4029         widget_class->focus_out_event = ev_view_focus_out;
4030         widget_class->get_accessible = ev_view_get_accessible;
4031         widget_class->size_request = ev_view_size_request;
4032         widget_class->size_allocate = ev_view_size_allocate;
4033         widget_class->realize = ev_view_realize;
4034         widget_class->scroll_event = ev_view_scroll_event;
4035         widget_class->enter_notify_event = ev_view_enter_notify_event;
4036         widget_class->leave_notify_event = ev_view_leave_notify_event;
4037         widget_class->style_set = ev_view_style_set;
4038         widget_class->drag_data_get = ev_view_drag_data_get;
4039         widget_class->drag_motion = ev_view_drag_motion;
4040         widget_class->drag_data_received = ev_view_drag_data_received;
4041         widget_class->popup_menu = ev_view_popup_menu;
4042 #if GTK_CHECK_VERSION (2, 11, 7)
4043         widget_class->query_tooltip = ev_view_query_tooltip;
4044 #endif
4045
4046         gtk_object_class->destroy = ev_view_destroy;
4047
4048         layout_class->set_scroll_adjustments = ev_view_set_scroll_adjustments;
4049
4050         class->binding_activated = ev_view_scroll;
4051
4052         signals[SIGNAL_BINDING_ACTIVATED] = g_signal_new ("binding_activated",
4053                          G_TYPE_FROM_CLASS (object_class),
4054                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
4055                          G_STRUCT_OFFSET (EvViewClass, binding_activated),
4056                          NULL, NULL,
4057                          ev_marshal_VOID__ENUM_BOOLEAN,
4058                          G_TYPE_NONE, 2,
4059                          GTK_TYPE_SCROLL_TYPE,
4060                          G_TYPE_BOOLEAN);
4061
4062         signals[SIGNAL_ZOOM_INVALID] = g_signal_new ("zoom-invalid",
4063                          G_TYPE_FROM_CLASS (object_class),
4064                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
4065                          G_STRUCT_OFFSET (EvViewClass, zoom_invalid),
4066                          NULL, NULL,
4067                          ev_marshal_VOID__VOID,
4068                          G_TYPE_NONE, 0, G_TYPE_NONE);
4069         signals[SIGNAL_HANDLE_LINK] = g_signal_new ("handle-link",
4070                          G_TYPE_FROM_CLASS (object_class),
4071                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
4072                          G_STRUCT_OFFSET (EvViewClass, handle_link),
4073                          NULL, NULL,
4074                          g_cclosure_marshal_VOID__OBJECT,
4075                          G_TYPE_NONE, 1,
4076                          G_TYPE_OBJECT);
4077         signals[SIGNAL_EXTERNAL_LINK] = g_signal_new ("external-link",
4078                          G_TYPE_FROM_CLASS (object_class),
4079                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
4080                          G_STRUCT_OFFSET (EvViewClass, external_link),
4081                          NULL, NULL,
4082                          g_cclosure_marshal_VOID__OBJECT,
4083                          G_TYPE_NONE, 1,
4084                          G_TYPE_OBJECT);
4085         signals[SIGNAL_POPUP_MENU] = g_signal_new ("popup",
4086                          G_TYPE_FROM_CLASS (object_class),
4087                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
4088                          G_STRUCT_OFFSET (EvViewClass, popup_menu),
4089                          NULL, NULL,
4090                          g_cclosure_marshal_VOID__OBJECT,
4091                          G_TYPE_NONE, 1,
4092                          G_TYPE_OBJECT);
4093
4094
4095         g_object_class_install_property (object_class,
4096                                          PROP_FIND_STATUS,
4097                                          g_param_spec_string ("find-status",
4098                                                               "Find Status Message",
4099                                                               "The find status message",
4100                                                               NULL,
4101                                                               G_PARAM_READABLE));
4102
4103         g_object_class_install_property (object_class,
4104                                          PROP_CONTINUOUS,
4105                                          g_param_spec_boolean ("continuous",
4106                                                                "Continuous",
4107                                                                "Continuous scrolling mode",
4108                                                                TRUE,
4109                                                                G_PARAM_READWRITE));
4110
4111         g_object_class_install_property (object_class,
4112                                          PROP_DUAL_PAGE,
4113                                          g_param_spec_boolean ("dual-page",
4114                                                                "Dual Page",
4115                                                                "Two pages visible at once",
4116                                                                FALSE,
4117                                                                G_PARAM_READWRITE));
4118         g_object_class_install_property (object_class,
4119                                          PROP_FULLSCREEN,
4120                                          g_param_spec_boolean ("fullscreen",
4121                                                                "Full Screen",
4122                                                                "Draw page in a fullscreen fashion",
4123                                                                FALSE,
4124                                                                G_PARAM_READWRITE));
4125         g_object_class_install_property (object_class,
4126                                          PROP_PRESENTATION,
4127                                          g_param_spec_boolean ("presentation",
4128                                                                "Presentation",
4129                                                                "Draw page in presentation mode",
4130                                                                TRUE,
4131                                                                G_PARAM_READWRITE));
4132
4133         g_object_class_install_property (object_class,
4134                                          PROP_SIZING_MODE,
4135                                          g_param_spec_enum ("sizing-mode",
4136                                                             "Sizing Mode",
4137                                                             "Sizing Mode",
4138                                                             EV_TYPE_SIZING_MODE,
4139                                                             EV_SIZING_FIT_WIDTH,
4140                                                             G_PARAM_READWRITE));
4141
4142         g_object_class_install_property (object_class,
4143                                          PROP_ZOOM,
4144                                          g_param_spec_double ("zoom",
4145                                                               "Zoom factor",
4146                                                               "Zoom factor",
4147                                                               0,
4148                                                               G_MAXDOUBLE,
4149                                                               1.0,
4150                                                               G_PARAM_READWRITE));
4151         g_object_class_install_property (object_class,
4152                                          PROP_ROTATION,
4153                                          g_param_spec_double ("rotation",
4154                                                               "Rotation",
4155                                                               "Rotation",
4156                                                               0,
4157                                                               360,
4158                                                               0,
4159                                                               G_PARAM_READWRITE));
4160         g_object_class_install_property (object_class,
4161                                          PROP_HAS_SELECTION,
4162                                          g_param_spec_boolean ("has-selection",
4163                                                                "Has selection",
4164                                                                "The view has selections",
4165                                                                FALSE,
4166                                                                G_PARAM_READABLE));
4167
4168         binding_set = gtk_binding_set_by_class (class);
4169
4170         add_scroll_binding_keypad (binding_set, GDK_Left,  0, EV_SCROLL_STEP_BACKWARD, TRUE);
4171         add_scroll_binding_keypad (binding_set, GDK_Right, 0, EV_SCROLL_STEP_FORWARD,  TRUE);
4172         add_scroll_binding_keypad (binding_set, GDK_Left,  GDK_MOD1_MASK, EV_SCROLL_STEP_DOWN, TRUE);
4173         add_scroll_binding_keypad (binding_set, GDK_Right, GDK_MOD1_MASK, EV_SCROLL_STEP_UP,  TRUE);
4174         add_scroll_binding_keypad (binding_set, GDK_Up,    0, EV_SCROLL_STEP_BACKWARD, FALSE);
4175         add_scroll_binding_keypad (binding_set, GDK_Down,  0, EV_SCROLL_STEP_FORWARD,  FALSE);
4176         add_scroll_binding_keypad (binding_set, GDK_Up,    GDK_MOD1_MASK, EV_SCROLL_STEP_DOWN, FALSE);
4177         add_scroll_binding_keypad (binding_set, GDK_Down,  GDK_MOD1_MASK, EV_SCROLL_STEP_UP,  FALSE);
4178         gtk_binding_entry_add_signal (binding_set, GDK_H, 0, "binding_activated", 2, EV_TYPE_SCROLL_TYPE,
4179                                       EV_SCROLL_STEP_BACKWARD, G_TYPE_BOOLEAN, TRUE);
4180         gtk_binding_entry_add_signal (binding_set, GDK_J, 0, "binding_activated", 2, EV_TYPE_SCROLL_TYPE,
4181                                       EV_SCROLL_STEP_FORWARD, G_TYPE_BOOLEAN, FALSE);
4182         gtk_binding_entry_add_signal (binding_set, GDK_K, 0, "binding_activated", 2, EV_TYPE_SCROLL_TYPE,
4183                                       EV_SCROLL_STEP_BACKWARD, G_TYPE_BOOLEAN, FALSE);
4184         gtk_binding_entry_add_signal (binding_set, GDK_L, 0, "binding_activated", 2, EV_TYPE_SCROLL_TYPE,
4185                                       EV_SCROLL_STEP_FORWARD, G_TYPE_BOOLEAN, TRUE);
4186
4187 }
4188
4189 static void
4190 ev_view_init (EvView *view)
4191 {
4192         GTK_WIDGET_SET_FLAGS (view, GTK_CAN_FOCUS);
4193
4194         view->spacing = 5;
4195         view->scale = 1.0;
4196         view->current_page = 0;
4197         view->pressed_button = -1;
4198         view->cursor = EV_VIEW_CURSOR_NORMAL;
4199         view->drag_info.in_drag = FALSE;
4200         view->scroll_info.autoscrolling = FALSE;
4201         view->selection_info.selections = NULL;
4202         view->selection_info.in_selection = FALSE;
4203         view->selection_info.in_drag = FALSE;
4204         view->selection_mode = EV_VIEW_SELECTION_TEXT;
4205         view->continuous = TRUE;
4206         view->dual_page = FALSE;
4207         view->presentation = FALSE;
4208         view->presentation_state = EV_PRESENTATION_NORMAL;
4209         view->fullscreen = FALSE;
4210         view->sizing_mode = EV_SIZING_FIT_WIDTH;
4211         view->pending_scroll = SCROLL_TO_KEEP_POSITION;
4212         view->jump_to_find_result = TRUE;
4213         view->highlight_find_results = FALSE;
4214
4215         gtk_layout_set_hadjustment (GTK_LAYOUT (view), NULL);
4216         gtk_layout_set_vadjustment (GTK_LAYOUT (view), NULL);
4217
4218         gtk_drag_dest_set (GTK_WIDGET (view),
4219                            GTK_DEST_DEFAULT_ALL,
4220                            view_drop_targets,
4221                            G_N_ELEMENTS (view_drop_targets),
4222                            GDK_ACTION_COPY);
4223 }
4224
4225 /*** Callbacks ***/
4226
4227 static void
4228 find_changed_cb (EvDocument *document, int page, EvView *view)
4229 {
4230         double percent;
4231         int n_pages;
4232
4233         percent = ev_document_find_get_progress
4234                         (EV_DOCUMENT_FIND (view->document));
4235         n_pages = ev_page_cache_get_n_pages (view->page_cache);
4236
4237         if (view->jump_to_find_result == TRUE) {
4238                 jump_to_find_page (view, EV_VIEW_FIND_NEXT, 0);
4239                 jump_to_find_result (view);
4240         }
4241         update_find_status_message (view, percent * n_pages >= n_pages - 1 );
4242         if (view->current_page == page)
4243                 gtk_widget_queue_draw (GTK_WIDGET (view));
4244 }
4245
4246 static void
4247 ev_view_change_page (EvView *view,
4248                      gint    new_page)
4249 {
4250         gint x, y;
4251
4252         view->current_page = new_page;
4253         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
4254
4255         if (view->presentation)
4256                 ev_view_presentation_transition_start (view);
4257
4258         gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
4259         ev_view_handle_cursor_over_xy (view, x, y);
4260
4261         gtk_widget_queue_resize (GTK_WIDGET (view));
4262 }
4263
4264 static void
4265 ev_view_transition_animation_finish (EvTransitionAnimation *animation,
4266                                      EvView                *view)
4267 {
4268         g_object_unref (view->animation);
4269         view->animation = NULL;
4270         ev_view_change_page (view, view->current_page);
4271 }
4272
4273 static void
4274 ev_view_transition_animation_frame (EvTransitionAnimation *animation,
4275                                     gdouble                progress,
4276                                     EvView                *view)
4277 {
4278         gtk_widget_queue_draw (GTK_WIDGET (view));
4279 }
4280
4281 static void
4282 ev_view_presentation_animation_start (EvView *view,
4283                                       int     new_page)
4284 {
4285         EvTransitionEffect *effect = NULL;
4286         cairo_surface_t *surface;
4287
4288         if (EV_IS_DOCUMENT_TRANSITION (view->document))
4289                 effect = ev_document_transition_get_effect (EV_DOCUMENT_TRANSITION (view->document),
4290                                                             view->current_page);
4291         if (!effect)
4292                 return;
4293
4294         surface = ev_pixbuf_cache_get_surface (view->pixbuf_cache, view->current_page);
4295         view->animation = ev_transition_animation_new (effect);
4296         ev_transition_animation_set_origin_surface (view->animation, surface);
4297
4298         g_signal_connect (view->animation, "frame",
4299                           G_CALLBACK (ev_view_transition_animation_frame), view);
4300         g_signal_connect (view->animation, "finished",
4301                           G_CALLBACK (ev_view_transition_animation_finish), view);
4302 }
4303
4304 static void
4305 job_finished_cb (EvPixbufCache *pixbuf_cache,
4306                  GdkRegion     *region,
4307                  EvView        *view)
4308 {
4309         if (view->animation) {
4310                 cairo_surface_t *surface;
4311
4312                 surface = ev_pixbuf_cache_get_surface (pixbuf_cache, view->current_page);
4313                 ev_transition_animation_set_dest_surface (view->animation, surface);
4314         }
4315
4316         if (region) {
4317                 gdk_window_invalidate_region (view->layout.bin_window,
4318                                               region, TRUE);
4319         } else {
4320                 gtk_widget_queue_draw (GTK_WIDGET (view));
4321         }
4322 }
4323
4324 static void
4325 page_changed_cb (EvPageCache *page_cache,
4326                  int          new_page,
4327                  EvView      *view)
4328 {
4329         if (view->current_page != new_page) {
4330                 if (view->presentation)
4331                         ev_view_presentation_animation_start (view, new_page);
4332
4333                 ev_view_change_page (view, new_page);
4334         } else {
4335                 gtk_widget_queue_draw (GTK_WIDGET (view));
4336         }
4337
4338         if (EV_IS_DOCUMENT_FIND (view->document)) {
4339                 view->find_result = 0;
4340                 update_find_status_message (view, TRUE);
4341         }
4342 }
4343
4344 static void
4345 on_adjustment_value_changed (GtkAdjustment *adjustment,
4346                              EvView        *view)
4347 {
4348         int dx = 0, dy = 0;
4349         gint x, y;
4350         GList *children, *l;
4351
4352         if (! GTK_WIDGET_REALIZED (view))
4353                 return;
4354
4355         if (view->hadjustment) {
4356                 dx = view->scroll_x - (int) view->hadjustment->value;
4357                 view->scroll_x = (int) view->hadjustment->value;
4358         } else {
4359                 view->scroll_x = 0;
4360         }
4361
4362         if (view->vadjustment) {
4363                 dy = view->scroll_y - (int) view->vadjustment->value;
4364                 view->scroll_y = (int) view->vadjustment->value;
4365         } else {
4366                 view->scroll_y = 0;
4367         }
4368
4369         children = gtk_container_get_children (GTK_CONTAINER (view));
4370         for (l = children; l && l->data; l = g_list_next (l)) {
4371                 gint       child_x, child_y;
4372                 GtkWidget *child = (GtkWidget *)l->data;
4373
4374                 gtk_container_child_get (GTK_CONTAINER (view),
4375                                          child,
4376                                          "x", &child_x,
4377                                          "y", &child_y,
4378                                          NULL);
4379                 gtk_layout_move (GTK_LAYOUT (view), child, child_x + dx, child_y + dy);
4380         }
4381         g_list_free (children);
4382
4383         if (view->pending_resize)
4384                 gtk_widget_queue_draw (GTK_WIDGET (view));
4385         else
4386                 gdk_window_scroll (view->layout.bin_window, dx, dy);
4387
4388         gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
4389         ev_view_handle_cursor_over_xy (view, x, y);
4390
4391         if (view->document)
4392                 view_update_range_and_current_page (view);
4393 }
4394
4395 GtkWidget*
4396 ev_view_new (void)
4397 {
4398         GtkWidget *view;
4399
4400         view = g_object_new (EV_TYPE_VIEW, NULL);
4401
4402         return view;
4403 }
4404
4405 static void
4406 setup_caches (EvView *view)
4407 {
4408         view->page_cache = ev_page_cache_get (view->document);
4409         g_signal_connect (view->page_cache, "page-changed", G_CALLBACK (page_changed_cb), view);
4410         view->pixbuf_cache = ev_pixbuf_cache_new (GTK_WIDGET (view), view->document);
4411         g_signal_connect (view->pixbuf_cache, "job-finished", G_CALLBACK (job_finished_cb), view);
4412         page_changed_cb (view->page_cache,
4413                          ev_page_cache_get_current_page (view->page_cache),
4414                          view);
4415 }
4416
4417 static void
4418 clear_caches (EvView *view)
4419 {
4420         if (view->pixbuf_cache) {
4421                 g_object_unref (view->pixbuf_cache);
4422                 view->pixbuf_cache = NULL;
4423         }
4424
4425         if (view->page_cache) {
4426                 view->page_cache = NULL;
4427         }
4428 }
4429
4430 void
4431 ev_view_set_loading (EvView       *view,
4432                      gboolean      loading)
4433 {
4434         view->loading = loading;
4435         gtk_widget_queue_draw (GTK_WIDGET (view));
4436 }
4437
4438 static gboolean
4439 ev_view_autoscroll_cb (EvView *view)
4440 {
4441         gdouble speed, value;
4442
4443         /* If the user stops autoscrolling, autoscrolling will be
4444          * set to false but the timeout will continue; stop the timeout: */
4445         if (!view->scroll_info.autoscrolling) {
4446                 view->scroll_info.timeout_id = 0;
4447                 return FALSE;
4448         }
4449
4450         if (view->scroll_info.last_y > view->scroll_info.start_y &&
4451                 (view->scroll_info.last_y < view->scroll_info.start_y))
4452                 return TRUE;
4453
4454         /* Replace 100 with your speed of choice: The lower the faster.
4455          * Replace 3 with another speed of choice: The higher, the faster it accelerated
4456          *      based on the distance of the starting point from the mouse
4457          * (All also effected by the timeout interval of this callback) */
4458
4459         if (view->scroll_info.start_y > view->scroll_info.last_y)
4460                 speed = -pow ((((gdouble)view->scroll_info.start_y - view->scroll_info.last_y) / 100), 3);
4461         else
4462                 speed = pow ((((gdouble)view->scroll_info.last_y - view->scroll_info.start_y) / 100), 3);
4463
4464         value = gtk_adjustment_get_value (view->vadjustment);
4465         value = CLAMP (value + speed, 0, view->vadjustment->upper - view->vadjustment->page_size);
4466         gtk_adjustment_set_value (view->vadjustment, value);
4467
4468         return TRUE;
4469
4470 }
4471
4472 void
4473 ev_view_autoscroll_start (EvView *view)
4474 {
4475         gint x, y;
4476
4477         g_return_if_fail (EV_IS_VIEW (view));
4478
4479         if (view->scroll_info.autoscrolling)
4480                 return;
4481
4482         view->scroll_info.autoscrolling = TRUE;
4483         view->scroll_info.timeout_id =
4484                 g_timeout_add (20, (GSourceFunc)ev_view_autoscroll_cb,
4485                                view);
4486
4487         gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
4488         ev_view_handle_cursor_over_xy (view, x, y);
4489 }
4490
4491 void
4492 ev_view_autoscroll_stop (EvView *view)
4493 {
4494         gint x, y;
4495
4496         g_return_if_fail (EV_IS_VIEW (view));
4497
4498         if (!view->scroll_info.autoscrolling)
4499                 return;
4500
4501         view->scroll_info.autoscrolling = FALSE;
4502         if (view->scroll_info.timeout_id) {
4503                 g_source_remove (view->scroll_info.timeout_id);
4504                 view->scroll_info.timeout_id = 0;
4505         }
4506
4507         gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
4508         ev_view_handle_cursor_over_xy (view, x, y);
4509 }
4510
4511 void
4512 ev_view_set_document (EvView     *view,
4513                       EvDocument *document)
4514 {
4515         g_return_if_fail (EV_IS_VIEW (view));
4516
4517         view->loading = FALSE;
4518
4519         if (document != view->document) {
4520                 clear_caches (view);
4521
4522                 if (view->document) {
4523                         g_signal_handlers_disconnect_by_func (view->document,
4524                                                               find_changed_cb,
4525                                                               view);
4526                         g_object_unref (view->document);
4527                         view->page_cache = NULL;
4528
4529                 }
4530
4531                 view->document = document;
4532                 view->find_result = 0;
4533
4534                 if (view->document) {
4535                         g_object_ref (view->document);
4536                         if (EV_IS_DOCUMENT_FIND (view->document)) {
4537                                 g_signal_connect (view->document,
4538                                                   "find_changed",
4539                                                   G_CALLBACK (find_changed_cb),
4540                                                   view);
4541                         }
4542
4543                         setup_caches (view);
4544                 }
4545
4546                 gtk_widget_queue_resize (GTK_WIDGET (view));
4547         }
4548 }
4549
4550 /*** Zoom and sizing mode ***/
4551
4552 #define EPSILON 0.0000001
4553 void
4554 ev_view_set_zoom (EvView   *view,
4555                   double    factor,
4556                   gboolean  relative)
4557 {
4558         double scale;
4559
4560         if (relative)
4561                 scale = view->scale * factor;
4562         else
4563                 scale = factor;
4564
4565         scale = CLAMP (scale,
4566                        view->sizing_mode == EV_SIZING_FREE ? view->min_scale : 0,
4567                        view->max_scale);
4568
4569         if (ABS (view->scale - scale) < EPSILON)
4570                 return;
4571
4572         if (view->loading_text) {
4573                 cairo_surface_destroy (view->loading_text);
4574                 view->loading_text = NULL;
4575         }
4576
4577         view->scale = scale;
4578         view->pending_resize = TRUE;
4579
4580         gtk_widget_queue_resize (GTK_WIDGET (view));
4581
4582         g_object_notify (G_OBJECT (view), "zoom");
4583 }
4584
4585 double
4586 ev_view_get_zoom (EvView *view)
4587 {
4588         return view->scale;
4589 }
4590
4591 void
4592 ev_view_set_screen_dpi (EvView  *view,
4593                         gdouble  dpi)
4594 {
4595         g_return_if_fail (EV_IS_VIEW (view));
4596         g_return_if_fail (dpi > 0);
4597
4598         view->dpi = dpi;
4599         view->min_scale = MIN_SCALE * dpi / 72.0;
4600         view->max_scale = MAX_SCALE * dpi / 72.0;
4601 }
4602
4603 gboolean
4604 ev_view_get_continuous (EvView *view)
4605 {
4606         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
4607
4608         return view->continuous;
4609 }
4610
4611 void
4612 ev_view_set_continuous (EvView   *view,
4613                         gboolean  continuous)
4614 {
4615         g_return_if_fail (EV_IS_VIEW (view));
4616
4617         continuous = continuous != FALSE;
4618
4619         if (view->continuous != continuous) {
4620                 view->continuous = continuous;
4621                 view->pending_scroll = SCROLL_TO_PAGE_POSITION;
4622                 gtk_widget_queue_resize (GTK_WIDGET (view));
4623         }
4624
4625         g_object_notify (G_OBJECT (view), "continuous");
4626 }
4627
4628 gboolean
4629 ev_view_get_dual_page (EvView *view)
4630 {
4631         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
4632
4633         return view->dual_page;
4634 }
4635
4636 void
4637 ev_view_set_dual_page (EvView   *view,
4638                        gboolean  dual_page)
4639 {
4640         g_return_if_fail (EV_IS_VIEW (view));
4641
4642         dual_page = dual_page != FALSE;
4643
4644         if (view->dual_page == dual_page)
4645                 return;
4646
4647         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
4648         view->dual_page = dual_page;
4649         /* FIXME: if we're keeping the pixbuf cache around, we should extend the
4650          * preload_cache_size to be 2 if dual_page is set.
4651          */
4652         gtk_widget_queue_resize (GTK_WIDGET (view));
4653
4654         g_object_notify (G_OBJECT (view), "dual-page");
4655 }
4656
4657 void
4658 ev_view_set_fullscreen (EvView   *view,
4659                          gboolean  fullscreen)
4660 {
4661         g_return_if_fail (EV_IS_VIEW (view));
4662
4663         fullscreen = fullscreen != FALSE;
4664
4665         if (view->fullscreen == fullscreen)
4666                 return;
4667
4668         view->fullscreen = fullscreen;
4669         gtk_widget_queue_resize (GTK_WIDGET (view));
4670
4671         g_object_notify (G_OBJECT (view), "fullscreen");
4672 }
4673
4674 gboolean
4675 ev_view_get_fullscreen (EvView *view)
4676 {
4677         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
4678
4679         return view->fullscreen;
4680 }
4681
4682 void
4683 ev_view_set_presentation (EvView   *view,
4684                           gboolean  presentation)
4685 {
4686         g_return_if_fail (EV_IS_VIEW (view));
4687
4688         presentation = presentation != FALSE;
4689
4690         if (view->presentation == presentation)
4691                 return;
4692
4693         if (!presentation)
4694                 view->presentation_state = EV_PRESENTATION_NORMAL;
4695
4696         view->presentation = presentation;
4697         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
4698
4699         if (presentation) {
4700                 view->sizing_mode_saved = view->sizing_mode;
4701                 view->scale_saved = view->scale;
4702                 ev_view_set_sizing_mode (view, EV_SIZING_BEST_FIT);
4703         } else {
4704                 ev_view_set_sizing_mode (view, view->sizing_mode_saved);
4705                 ev_view_set_zoom (view, view->scale_saved, FALSE);
4706         }
4707
4708         gtk_widget_queue_resize (GTK_WIDGET (view));
4709
4710         if (presentation)
4711                 ev_view_presentation_transition_start (view);
4712         else {
4713                 ev_view_presentation_transition_stop (view);
4714
4715                 if (view->animation) {
4716                         /* stop any running animation */
4717                         ev_view_transition_animation_finish (view->animation, view);
4718                 }
4719         }
4720
4721         if (GTK_WIDGET_REALIZED (view)) {
4722                 if (view->presentation)
4723                         gdk_window_set_background (view->layout.bin_window,
4724                                                    &GTK_WIDGET (view)->style->black);
4725                 else
4726                         gdk_window_set_background (view->layout.bin_window,
4727                                                    &GTK_WIDGET (view)->style->mid [GTK_STATE_NORMAL]);
4728         }
4729
4730         g_object_notify (G_OBJECT (view), "presentation");
4731 }
4732
4733 gboolean
4734 ev_view_get_presentation (EvView *view)
4735 {
4736         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
4737
4738         return view->presentation;
4739 }
4740
4741 static gboolean
4742 transition_next_page (EvView *view)
4743 {
4744         ev_view_next_page (view);
4745
4746         return FALSE;
4747 }
4748
4749 static void
4750 ev_view_presentation_transition_stop (EvView *view)
4751 {
4752         if (view->trans_timeout_id > 0)
4753                 g_source_remove (view->trans_timeout_id);
4754         view->trans_timeout_id = 0;
4755 }
4756
4757 static void
4758 ev_view_presentation_transition_start (EvView *view)
4759 {
4760         gdouble duration;
4761
4762         if (!EV_IS_DOCUMENT_TRANSITION (view->document))
4763                 return;
4764
4765         ev_view_presentation_transition_stop (view);
4766
4767         duration = ev_document_transition_get_page_duration (EV_DOCUMENT_TRANSITION (view->document),
4768                                                              view->current_page);
4769         if (duration > 0) {
4770                 view->trans_timeout_id =
4771                         g_timeout_add_seconds (duration,
4772                                                (GSourceFunc) transition_next_page,
4773                                                view);
4774         }
4775 }
4776
4777 void
4778 ev_view_set_sizing_mode (EvView       *view,
4779                          EvSizingMode  sizing_mode)
4780 {
4781         g_return_if_fail (EV_IS_VIEW (view));
4782
4783         if (view->sizing_mode == sizing_mode)
4784                 return;
4785
4786         view->sizing_mode = sizing_mode;
4787         gtk_widget_queue_resize (GTK_WIDGET (view));
4788
4789         g_object_notify (G_OBJECT (view), "sizing-mode");
4790 }
4791
4792 EvSizingMode
4793 ev_view_get_sizing_mode (EvView *view)
4794 {
4795         g_return_val_if_fail (EV_IS_VIEW (view), EV_SIZING_FREE);
4796
4797         return view->sizing_mode;
4798 }
4799
4800 gboolean
4801 ev_view_can_zoom_in (EvView *view)
4802 {
4803         return view->scale * ZOOM_IN_FACTOR <= view->max_scale;
4804 }
4805
4806 gboolean
4807 ev_view_can_zoom_out (EvView *view)
4808 {
4809         return view->scale * ZOOM_OUT_FACTOR >= view->min_scale;
4810 }
4811
4812 void
4813 ev_view_zoom_in (EvView *view)
4814 {
4815         g_return_if_fail (view->sizing_mode == EV_SIZING_FREE);
4816
4817         if (view->presentation)
4818                 return;
4819
4820         view->pending_scroll = SCROLL_TO_CENTER;
4821         ev_view_set_zoom (view, ZOOM_IN_FACTOR, TRUE);
4822 }
4823
4824 void
4825 ev_view_zoom_out (EvView *view)
4826 {
4827         g_return_if_fail (view->sizing_mode == EV_SIZING_FREE);
4828
4829         if (view->presentation)
4830                 return;
4831
4832         view->pending_scroll = SCROLL_TO_CENTER;
4833         ev_view_set_zoom (view, ZOOM_OUT_FACTOR, TRUE);
4834 }
4835
4836 void
4837 ev_view_rotate_right (EvView *view)
4838 {
4839         int rotation = view->rotation + 90;
4840
4841         if (rotation >= 360) {
4842                 rotation -= 360;
4843         }
4844
4845         ev_view_set_rotation (view, rotation);
4846 }
4847
4848 void
4849 ev_view_rotate_left (EvView *view)
4850 {
4851         int rotation = view->rotation - 90;
4852
4853         if (rotation < 0) {
4854                 rotation += 360;
4855         }
4856
4857         ev_view_set_rotation (view, rotation);
4858 }
4859
4860 void
4861 ev_view_set_rotation (EvView *view, int rotation)
4862 {
4863         view->rotation = rotation;
4864
4865         if (view->pixbuf_cache) {
4866                 ev_pixbuf_cache_clear (view->pixbuf_cache);
4867                 gtk_widget_queue_resize (GTK_WIDGET (view));
4868         }
4869
4870         if (rotation != 0)
4871                 clear_selection (view);
4872
4873         g_object_notify (G_OBJECT (view), "rotation");
4874 }
4875
4876 int
4877 ev_view_get_rotation (EvView *view)
4878 {
4879         return view->rotation;
4880 }
4881
4882 static double
4883 zoom_for_size_fit_width (int doc_width,
4884                          int doc_height,
4885                          int target_width,
4886                          int target_height,
4887                          int vsb_width)
4888 {
4889         double scale;
4890
4891         scale = (double)target_width / doc_width;
4892
4893         if (doc_height * scale > target_height)
4894                 scale = (double) (target_width - vsb_width) / doc_width;
4895
4896         return scale;
4897 }
4898
4899 static double
4900 zoom_for_size_fit_height (int doc_width,
4901                           int doc_height,
4902                           int target_width,
4903                           int target_height,
4904                           int vsb_height)
4905 {
4906         double scale;
4907
4908         scale = (double)target_height / doc_height;
4909
4910         if (doc_width * scale > target_width)
4911                 scale = (double) (target_height - vsb_height) / doc_height;
4912
4913         return scale;
4914 }
4915
4916 static double
4917 zoom_for_size_best_fit (int doc_width,
4918                         int doc_height,
4919                         int target_width,
4920                         int target_height,
4921                         int vsb_width,
4922                         int hsb_width)
4923 {
4924         double w_scale;
4925         double h_scale;
4926
4927         w_scale = (double)target_width / doc_width;
4928         h_scale = (double)target_height / doc_height;
4929
4930         if (doc_height * w_scale > target_height)
4931                 w_scale = (double) (target_width - vsb_width) / doc_width;
4932         if (doc_width * h_scale > target_width)
4933                 h_scale = (double) (target_height - hsb_width) / doc_height;
4934
4935         return MIN (w_scale, h_scale);
4936 }
4937
4938
4939 static void
4940 ev_view_zoom_for_size_presentation (EvView *view,
4941                                     int     width,
4942                                     int     height)
4943 {
4944         int doc_width, doc_height;
4945         gdouble scale;
4946
4947         ev_page_cache_get_size (view->page_cache,
4948                                 view->current_page,
4949                                 view->rotation,
4950                                 1.0,
4951                                 &doc_width,
4952                                 &doc_height);
4953         scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, 0, 0);
4954         ev_view_set_zoom (view, scale, FALSE);
4955 }
4956
4957 static void
4958 ev_view_zoom_for_size_continuous_and_dual_page (EvView *view,
4959                            int     width,
4960                            int     height,
4961                            int     vsb_width,
4962                            int     hsb_height)
4963 {
4964         int doc_width, doc_height;
4965         GtkBorder border;
4966         gdouble scale;
4967
4968         ev_page_cache_get_max_width (view->page_cache,
4969                                      view->rotation,
4970                                      1.0,
4971                                      &doc_width);
4972         ev_page_cache_get_max_height (view->page_cache,
4973                                       view->rotation,
4974                                       1.0,
4975                                       &doc_height);
4976         compute_border (view, doc_width, doc_height, &border);
4977
4978         doc_width = doc_width * 2;
4979         width -= (2 * (border.left + border.right) + 3 * view->spacing);
4980         height -= (border.top + border.bottom + 2 * view->spacing - 1);
4981
4982         /* FIXME: We really need to calculate the overall height here, not the
4983          * page height.  We assume there's always a vertical scrollbar for
4984          * now.  We need to fix this. */
4985         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
4986                 scale = zoom_for_size_fit_width (doc_width, doc_height, width - vsb_width, height, 0);
4987         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
4988                 scale = zoom_for_size_best_fit (doc_width, doc_height, width - vsb_width, height, 0, hsb_height);
4989         else
4990                 g_assert_not_reached ();
4991
4992         ev_view_set_zoom (view, scale, FALSE);
4993 }
4994
4995 static void
4996 ev_view_zoom_for_size_continuous (EvView *view,
4997                                   int     width,
4998                                   int     height,
4999                                   int     vsb_width,
5000                                   int     hsb_height)
5001 {
5002         int doc_width, doc_height;
5003         GtkBorder border;
5004         gdouble scale;
5005
5006         ev_page_cache_get_max_width (view->page_cache,
5007                                      view->rotation,
5008                                      1.0,
5009                                      &doc_width);
5010         ev_page_cache_get_max_height (view->page_cache,
5011                                       view->rotation,
5012                                       1.0,
5013                                       &doc_height);
5014         compute_border (view, doc_width, doc_height, &border);
5015
5016         width -= (border.left + border.right + 2 * view->spacing);
5017         height -= (border.top + border.bottom + 2 * view->spacing - 1);
5018
5019         /* FIXME: We really need to calculate the overall height here, not the
5020          * page height.  We assume there's always a vertical scrollbar for
5021          * now.  We need to fix this. */
5022         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
5023                 scale = zoom_for_size_fit_width (doc_width, doc_height, width - vsb_width, height, 0);
5024         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
5025                 scale = zoom_for_size_best_fit (doc_width, doc_height, width - vsb_width, height, 0, hsb_height);
5026         else
5027                 g_assert_not_reached ();
5028
5029         ev_view_set_zoom (view, scale, FALSE);
5030 }
5031
5032 static void
5033 ev_view_zoom_for_size_dual_page (EvView *view,
5034                                  int     width,
5035                                  int     height,
5036                                  int     vsb_width,
5037                                  int     hsb_height)
5038 {
5039         GtkBorder border;
5040         gint doc_width, doc_height;
5041         gdouble scale;
5042         gint other_page;
5043
5044         other_page = view->current_page ^ 1;
5045
5046         /* Find the largest of the two. */
5047         ev_page_cache_get_size (view->page_cache,
5048                                 view->current_page,
5049                                 view->rotation,
5050                                 1.0,
5051                                 &doc_width, &doc_height);
5052
5053         if (other_page < ev_page_cache_get_n_pages (view->page_cache)) {
5054                 gint width_2, height_2;
5055                 ev_page_cache_get_size (view->page_cache,
5056                                         other_page,
5057                                         view->rotation,
5058                                         1.0,
5059                                         &width_2, &height_2);
5060                 if (width_2 > doc_width)
5061                         doc_width = width_2;
5062                 if (height_2 > doc_height)
5063                         doc_height = height_2;
5064         }
5065         compute_border (view, doc_width, doc_height, &border);
5066
5067         doc_width = doc_width * 2;
5068         width -= ((border.left + border.right)* 2 + 3 * view->spacing);
5069         height -= (border.top + border.bottom + 2 * view->spacing);
5070
5071         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
5072                 scale = zoom_for_size_fit_width (doc_width, doc_height, width, height, vsb_width);
5073         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
5074                 scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, vsb_width, hsb_height);
5075         else
5076                 g_assert_not_reached ();
5077
5078         ev_view_set_zoom (view, scale, FALSE);
5079 }
5080
5081 static void
5082 ev_view_zoom_for_size_single_page (EvView *view,
5083                                    int     width,
5084                                    int     height,
5085                                    int     vsb_width,
5086                                    int     hsb_height)
5087 {
5088         int doc_width, doc_height;
5089         GtkBorder border;
5090         gdouble scale;
5091
5092         ev_page_cache_get_size (view->page_cache,
5093                                 view->current_page,
5094                                 view->rotation,
5095                                 1.0,
5096                                 &doc_width,
5097                                 &doc_height);
5098         /* Get an approximate border */
5099         compute_border (view, width, height, &border);
5100
5101         width -= (border.left + border.right + 2 * view->spacing);
5102         height -= (border.top + border.bottom + 2 * view->spacing);
5103
5104         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
5105                 scale = zoom_for_size_fit_width (doc_width, doc_height, width, height, vsb_width);
5106         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
5107                 scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, vsb_width, hsb_height);
5108         else
5109                 g_assert_not_reached ();
5110
5111         ev_view_set_zoom (view, scale, FALSE);
5112 }
5113
5114 static void
5115 ev_view_set_zoom_for_size (EvView *view,
5116                            int     width,
5117                            int     height,
5118                            int     vsb_width,
5119                            int     hsb_height)
5120 {
5121         g_return_if_fail (EV_IS_VIEW (view));
5122         g_return_if_fail (view->sizing_mode == EV_SIZING_FIT_WIDTH ||
5123                           view->sizing_mode == EV_SIZING_BEST_FIT);
5124         g_return_if_fail (width >= 0);
5125         g_return_if_fail (height >= 0);
5126
5127         if (view->document == NULL)
5128                 return;
5129
5130         if (view->presentation)
5131                 ev_view_zoom_for_size_presentation (view, width, height);
5132         else if (view->continuous && view->dual_page)
5133                 ev_view_zoom_for_size_continuous_and_dual_page (view, width, height, vsb_width, hsb_height);
5134         else if (view->continuous)
5135                 ev_view_zoom_for_size_continuous (view, width, height, vsb_width, hsb_height);
5136         else if (view->dual_page)
5137                 ev_view_zoom_for_size_dual_page (view, width, height, vsb_width, hsb_height);
5138         else
5139                 ev_view_zoom_for_size_single_page (view, width, height, vsb_width, hsb_height);
5140 }
5141
5142 /*** Find ***/
5143 static void
5144 update_find_status_message (EvView *view, gboolean this_page)
5145 {
5146         char *message;
5147
5148         if (this_page) {
5149                 int results;
5150
5151                 results = ev_document_find_get_n_results
5152                                 (EV_DOCUMENT_FIND (view->document),
5153                                  view->current_page);
5154                 /* TRANS: Sometimes this could be better translated as
5155                    "%d hit(s) on this page".  Therefore this string
5156                    contains plural cases. */
5157                 message = g_strdup_printf (ngettext ("%d found on this page",
5158                                                      "%d found on this page",
5159                                                      results),
5160                                            results);
5161         } else {
5162                 double percent;
5163
5164                 percent = ev_document_find_get_progress
5165                                 (EV_DOCUMENT_FIND (view->document));
5166                 message = g_strdup_printf (_("%3d%% remaining to search"),
5167                                            (int) ((1.0 - percent) * 100));
5168
5169         }
5170         ev_view_set_find_status (view, message);
5171         g_free (message);
5172 }
5173
5174 const char *
5175 ev_view_get_find_status (EvView *view)
5176 {
5177         g_return_val_if_fail (EV_IS_VIEW (view), NULL);
5178
5179         return view->find_status;
5180 }
5181
5182 static void
5183 ev_view_set_find_status (EvView *view, const char *message)
5184 {
5185         g_return_if_fail (EV_IS_VIEW (view));
5186
5187         g_free (view->find_status);
5188         view->find_status = g_strdup (message);
5189         g_object_notify (G_OBJECT (view), "find-status");
5190 }
5191
5192 static void
5193 jump_to_find_result (EvView *view)
5194 {
5195         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
5196         EvRectangle rect;
5197         GdkRectangle view_rect;
5198         int n_results;
5199         int page = view->current_page;
5200
5201         n_results = ev_document_find_get_n_results (find, page);
5202
5203         if (n_results > 0  && view->find_result < n_results) {
5204                 ev_document_find_get_result
5205                         (find, page, view->find_result, &rect);
5206
5207                 doc_rect_to_view_rect (view, page, &rect, &view_rect);
5208                 ensure_rectangle_is_visible (view, &view_rect);
5209         }
5210 }
5211
5212 /**
5213  * jump_to_find_page
5214  * @view: #EvView instance
5215  * @direction: Direction to look
5216  * @shift: Shift from current page
5217  *
5218  * Jumps to the first page that has occurences of searched word.
5219  * Uses a direction where to look and a shift from current page.
5220  *
5221  */
5222 static void
5223 jump_to_find_page (EvView *view, EvViewFindDirection direction, gint shift)
5224 {
5225         int n_pages, i;
5226
5227         n_pages = ev_page_cache_get_n_pages (view->page_cache);
5228
5229         for (i = 0; i < n_pages; i++) {
5230                 int has_results;
5231                 int page;
5232
5233                 if (direction == EV_VIEW_FIND_NEXT)
5234                         page = view->current_page + i;
5235                 else
5236                         page = view->current_page - i;
5237                 page += shift;
5238
5239                 if (page >= n_pages) {
5240                         page = page - n_pages;
5241                 }
5242                 if (page < 0)
5243                         page = page + n_pages;
5244
5245                 has_results = ev_document_find_page_has_results
5246                                 (EV_DOCUMENT_FIND (view->document), page);
5247                 if (has_results == -1) {
5248                         break;
5249                 } else if (has_results == 1) {
5250                         ev_page_cache_set_current_page (view->page_cache, page);
5251                         break;
5252                 }
5253         }
5254 }
5255
5256 gboolean
5257 ev_view_can_find_next (EvView *view)
5258 {
5259         if (EV_IS_DOCUMENT_FIND (view->document)) {
5260                 EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
5261                 int i, n_pages;
5262
5263                 n_pages = ev_page_cache_get_n_pages (view->page_cache);
5264                 for (i = 0; i < n_pages; i++) {
5265                         if (ev_document_find_get_n_results (find, i) > 0) {
5266                                 return TRUE;
5267                         }
5268                 }
5269         }
5270
5271         return FALSE;
5272 }
5273
5274 void
5275 ev_view_find_next (EvView *view)
5276 {
5277         int n_results, n_pages;
5278         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
5279
5280         n_results = ev_document_find_get_n_results (find, view->current_page);
5281
5282         n_pages = ev_page_cache_get_n_pages (view->page_cache);
5283
5284         view->find_result++;
5285
5286         if (view->find_result >= n_results) {
5287
5288                 view->find_result = 0;
5289                 jump_to_find_page (view, EV_VIEW_FIND_NEXT, 1);
5290                 jump_to_find_result (view);
5291         } else {
5292                 jump_to_find_result (view);
5293                 gtk_widget_queue_draw (GTK_WIDGET (view));
5294         }
5295 }
5296
5297 gboolean
5298 ev_view_can_find_previous (EvView *view)
5299 {
5300         if (EV_IS_DOCUMENT_FIND (view->document)) {
5301                 EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
5302                 int i, n_pages;
5303
5304                 n_pages = ev_page_cache_get_n_pages (view->page_cache);
5305                 for (i = n_pages - 1; i >= 0; i--) {
5306                         if (ev_document_find_get_n_results (find, i) > 0) {
5307                                 return TRUE;
5308                         }
5309                 }
5310         }
5311
5312         return FALSE;
5313 }
5314 void
5315 ev_view_find_previous (EvView *view)
5316 {
5317         int n_results, n_pages;
5318         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
5319         EvPageCache *page_cache;
5320
5321         page_cache = ev_page_cache_get (view->document);
5322
5323         n_results = ev_document_find_get_n_results (find, view->current_page);
5324
5325         n_pages = ev_page_cache_get_n_pages (page_cache);
5326
5327         view->find_result--;
5328
5329         if (view->find_result < 0) {
5330
5331                 jump_to_find_page (view, EV_VIEW_FIND_PREV, -1);
5332                 view->find_result = ev_document_find_get_n_results (find, view->current_page) - 1;
5333                 jump_to_find_result (view);
5334         } else {
5335                 jump_to_find_result (view);
5336                 gtk_widget_queue_draw (GTK_WIDGET (view));
5337         }
5338 }
5339
5340 void
5341 ev_view_search_changed (EvView *view)
5342 {
5343         /* search string has changed, focus on new search result */
5344         view->jump_to_find_result = TRUE;
5345 }
5346
5347 void
5348 ev_view_set_highlight_search (EvView *view, gboolean value)
5349 {
5350         view->highlight_find_results = value;
5351         gtk_widget_queue_draw (GTK_WIDGET (view));
5352 }
5353
5354 void
5355 ev_view_find_cancel (EvView *view)
5356 {
5357         if (EV_IS_DOCUMENT_FIND (view->document)) {
5358                 EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
5359
5360                 ev_document_find_cancel (find);
5361         }
5362 }
5363
5364 /*** Selections ***/
5365
5366 /* compute_new_selection_rect/text calculates the area currently selected by
5367  * view_rect.  each handles a different mode;
5368  */
5369 static GList *
5370 compute_new_selection_rect (EvView       *view,
5371                             GdkPoint     *start,
5372                             GdkPoint     *stop)
5373 {
5374         GdkRectangle view_rect;
5375         int n_pages, i;
5376         GList *list = NULL;
5377
5378         g_assert (view->selection_mode == EV_VIEW_SELECTION_RECTANGLE);
5379
5380         view_rect.x = MIN (start->x, stop->x);
5381         view_rect.y = MIN (start->y, stop->y);
5382         view_rect.width = MAX (start->x, stop->x) - view_rect.x;
5383         view_rect.width = MAX (start->y, stop->y) - view_rect.y;
5384
5385         n_pages = ev_page_cache_get_n_pages (view->page_cache);
5386
5387         for (i = 0; i < n_pages; i++) {
5388                 GdkRectangle page_area;
5389                 GtkBorder border;
5390
5391                 if (get_page_extents (view, i, &page_area, &border)) {
5392                         GdkRectangle overlap;
5393
5394                         if (gdk_rectangle_intersect (&page_area, &view_rect, &overlap)) {
5395                                 EvViewSelection *selection;
5396
5397                                 selection = g_new0 (EvViewSelection, 1);
5398                                 selection->page = i;
5399                                 view_rect_to_doc_rect (view, &overlap, &page_area,
5400                                                        &(selection->rect));
5401
5402                                 list = g_list_append (list, selection);
5403                         }
5404                 }
5405         }
5406
5407         return list;
5408 }
5409
5410 static gboolean
5411 gdk_rectangle_point_in (GdkRectangle *rectangle,
5412                         GdkPoint     *point)
5413 {
5414         return rectangle->x <= point->x &&
5415                 rectangle->y <= point->y &&
5416                 point->x < rectangle->x + rectangle->width &&
5417                 point->y < rectangle->y + rectangle->height;
5418 }
5419
5420 static GList *
5421 compute_new_selection_text (EvView          *view,
5422                             EvSelectionStyle style,
5423                             GdkPoint        *start,
5424                             GdkPoint        *stop)
5425 {
5426         int n_pages, i, first, last;
5427         GList *list = NULL;
5428         EvViewSelection *selection;
5429         gint width, height;
5430         int start_page, end_page;
5431
5432         g_assert (view->selection_mode == EV_VIEW_SELECTION_TEXT);
5433
5434         n_pages = ev_page_cache_get_n_pages (view->page_cache);
5435
5436         /* First figure out the range of pages the selection
5437          * affects. */
5438         first = n_pages;
5439         last = 0;
5440         if (view->continuous) {
5441                 start_page = 0;
5442                 end_page = n_pages;
5443         } else if (view->dual_page) {
5444                 start_page = view->start_page;
5445                 end_page = view->end_page + 1;
5446         } else {
5447                 start_page = view->current_page;
5448                 end_page = view->current_page + 1;
5449         }
5450
5451         for (i = start_page; i < end_page; i++) {
5452                 GdkRectangle page_area;
5453                 GtkBorder border;
5454
5455                 get_page_extents (view, i, &page_area, &border);
5456                 if (gdk_rectangle_point_in (&page_area, start) ||
5457                     gdk_rectangle_point_in (&page_area, stop)) {
5458                         if (first == n_pages)
5459                                 first = i;
5460                         last = i;
5461                 }
5462
5463         }
5464
5465         /* Now create a list of EvViewSelection's for the affected
5466          * pages.  This could be an empty list, a list of just one
5467          * page or a number of pages.*/
5468         for (i = first; i < last + 1; i++) {
5469                 GdkRectangle page_area;
5470                 GtkBorder border;
5471                 GdkPoint *point;
5472
5473                 ev_page_cache_get_size (view->page_cache, i,
5474                                         view->rotation,
5475                                         1.0, &width, &height);
5476
5477                 selection = g_new0 (EvViewSelection, 1);
5478                 selection->page = i;
5479                 selection->style = style;
5480                 selection->rect.x1 = selection->rect.y1 = 0;
5481                 selection->rect.x2 = width;
5482                 selection->rect.y2 = height;
5483
5484                 get_page_extents (view, i, &page_area, &border);
5485
5486                 if (gdk_rectangle_point_in (&page_area, start))
5487                         point = start;
5488                 else
5489                         point = stop;
5490
5491                 if (i == first)
5492                         view_point_to_doc_point (view, point, &page_area,
5493                                                  &selection->rect.x1,
5494                                                  &selection->rect.y1);
5495
5496                 /* If the selection is contained within just one page,
5497                  * make sure we don't write 'start' into both points
5498                  * in selection->rect. */
5499                 if (first == last)
5500                         point = stop;
5501
5502                 if (i == last)
5503                         view_point_to_doc_point (view, point, &page_area,
5504                                                  &selection->rect.x2,
5505                                                  &selection->rect.y2);
5506
5507                 list = g_list_append (list, selection);
5508         }
5509
5510         return list;
5511 }
5512
5513 /* This function takes the newly calculated list, and figures out which regions
5514  * have changed.  It then queues a redraw approporiately.
5515  */
5516 static void
5517 merge_selection_region (EvView *view,
5518                         GList  *new_list)
5519 {
5520         GList *old_list;
5521         GList *new_list_ptr, *old_list_ptr;
5522
5523         /* Update the selection */
5524         old_list = ev_pixbuf_cache_get_selection_list (view->pixbuf_cache);
5525         g_list_foreach (view->selection_info.selections, (GFunc)selection_free, NULL);
5526         view->selection_info.selections = new_list;
5527         ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, new_list);
5528         g_object_notify (G_OBJECT (view), "has-selection");
5529
5530         new_list_ptr = new_list;
5531         old_list_ptr = old_list;
5532
5533         while (new_list_ptr || old_list_ptr) {
5534                 EvViewSelection *old_sel, *new_sel;
5535                 int cur_page;
5536                 GdkRegion *region = NULL;
5537
5538                 new_sel = (new_list_ptr) ? (new_list_ptr->data) : NULL;
5539                 old_sel = (old_list_ptr) ? (old_list_ptr->data) : NULL;
5540
5541                 /* Assume that the lists are in order, and we run through them
5542                  * comparing them, one page at a time.  We come out with the
5543                  * first page we see. */
5544                 if (new_sel && old_sel) {
5545                         if (new_sel->page < old_sel->page) {
5546                                 new_list_ptr = new_list_ptr->next;
5547                                 old_sel = NULL;
5548                         } else if (new_sel->page > old_sel->page) {
5549                                 old_list_ptr = old_list_ptr->next;
5550                                 new_sel = NULL;
5551                         } else {
5552                                 new_list_ptr = new_list_ptr->next;
5553                                 old_list_ptr = old_list_ptr->next;
5554                         }
5555                 } else if (new_sel) {
5556                         new_list_ptr = new_list_ptr->next;
5557                 } else if (old_sel) {
5558                         old_list_ptr = old_list_ptr->next;
5559                 }
5560
5561                 g_assert (new_sel || old_sel);
5562
5563                 /* is the page we're looking at on the screen?*/
5564                 cur_page = new_sel ? new_sel->page : old_sel->page;
5565                 if (cur_page < view->start_page || cur_page > view->end_page)
5566                         continue;
5567
5568                 /* seed the cache with a new page.  We are going to need the new
5569                  * region too. */
5570                 if (new_sel) {
5571                         GdkRegion *tmp_region = NULL;
5572
5573                         ev_pixbuf_cache_get_selection_surface (view->pixbuf_cache,
5574                                                                cur_page,
5575                                                                view->scale,
5576                                                                &tmp_region);
5577
5578                         if (tmp_region) {
5579                                 new_sel->covered_region = gdk_region_copy (tmp_region);
5580                         }
5581                 }
5582
5583                 /* Now we figure out what needs redrawing */
5584                 if (old_sel && new_sel) {
5585                         if (old_sel->covered_region && new_sel->covered_region) {
5586                                 /* We only want to redraw the areas that have
5587                                  * changed, so we xor the old and new regions
5588                                  * and redraw if it's different */
5589                                 region = gdk_region_copy (old_sel->covered_region);
5590                                 gdk_region_xor (region, new_sel->covered_region);
5591                                 if (gdk_region_empty (region)) {
5592                                         gdk_region_destroy (region);
5593                                         region = NULL;
5594                                 }
5595                         } else if (old_sel->covered_region) {
5596                                 region = gdk_region_copy (old_sel->covered_region);
5597                         } else if (new_sel->covered_region) {
5598                                 region = gdk_region_copy (new_sel->covered_region);
5599                         }
5600                 } else if (old_sel && !new_sel) {
5601                         if (old_sel->covered_region && !gdk_region_empty (old_sel->covered_region)) {
5602                                 region = gdk_region_copy (old_sel->covered_region);
5603                         }
5604                 } else if (!old_sel && new_sel) {
5605                         if (new_sel->covered_region && !gdk_region_empty (new_sel->covered_region)) {
5606                                 region = gdk_region_copy (new_sel->covered_region);
5607                         }
5608                 } else {
5609                         g_assert_not_reached ();
5610                 }
5611
5612                 /* Redraw the damaged region! */
5613                 if (region) {
5614                         GdkRectangle page_area;
5615                         GtkBorder border;
5616
5617                         /* I don't know why but the region is smaller
5618                          * than expected. This hack fixes it, I guess
5619                          * 10 pixels more won't hurt
5620                          */
5621                         gdk_region_shrink (region, -5, -5);
5622
5623                         get_page_extents (view, cur_page, &page_area, &border);
5624                         gdk_region_offset (region,
5625                                            page_area.x + border.left - view->scroll_x,
5626                                            page_area.y + border.top - view->scroll_y);
5627                         gdk_window_invalidate_region (view->layout.bin_window, region, TRUE);
5628                         gdk_region_destroy (region);
5629                 }
5630         }
5631
5632         /* Free the old list, now that we're done with it. */
5633         g_list_foreach (old_list, (GFunc) selection_free, NULL);
5634 }
5635
5636 static void
5637 compute_selections (EvView          *view,
5638                     EvSelectionStyle style,
5639                     GdkPoint        *start,
5640                     GdkPoint        *stop)
5641 {
5642         GList *list;
5643
5644         if (view->selection_mode == EV_VIEW_SELECTION_RECTANGLE)
5645                 list = compute_new_selection_rect (view, start, stop);
5646         else
5647                 list = compute_new_selection_text (view, style, start, stop);
5648         merge_selection_region (view, list);
5649 }
5650
5651 /* Free's the selection.  It's up to the caller to queue redraws if needed.
5652  */
5653 static void
5654 selection_free (EvViewSelection *selection)
5655 {
5656         if (selection->covered_region)
5657                 gdk_region_destroy (selection->covered_region);
5658         g_free (selection);
5659 }
5660
5661 static void
5662 clear_selection (EvView *view)
5663 {
5664         g_list_foreach (view->selection_info.selections, (GFunc)selection_free, NULL);
5665         view->selection_info.selections = NULL;
5666         view->selection_info.in_selection = FALSE;
5667         if (view->pixbuf_cache)
5668                 ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, NULL);
5669         g_object_notify (G_OBJECT (view), "has-selection");
5670 }
5671
5672 void
5673 ev_view_select_all (EvView *view)
5674 {
5675         GList *selections = NULL;
5676         int n_pages, i;
5677
5678         /* Disable selection on rotated pages for the 0.4.0 series */
5679         if (view->rotation != 0)
5680                 return;
5681
5682         clear_selection (view);
5683
5684         n_pages = ev_page_cache_get_n_pages (view->page_cache);
5685         for (i = 0; i < n_pages; i++) {
5686                 int width, height;
5687                 EvViewSelection *selection;
5688
5689                 ev_page_cache_get_size (view->page_cache,
5690                                         i,
5691                                         view->rotation,
5692                                         1.0, &width, &height);
5693
5694                 selection = g_new0 (EvViewSelection, 1);
5695                 selection->page = i;
5696                 selection->style = EV_SELECTION_STYLE_GLYPH;
5697                 selection->rect.x1 = selection->rect.y1 = 0;
5698                 selection->rect.x2 = width;
5699                 selection->rect.y2 = height;
5700
5701                 selections = g_list_append (selections, selection);
5702         }
5703
5704         merge_selection_region (view, selections);
5705         gtk_widget_queue_draw (GTK_WIDGET (view));
5706 }
5707
5708 gboolean
5709 ev_view_get_has_selection (EvView *view)
5710 {
5711         return view->selection_info.selections != NULL;
5712 }
5713
5714 static char *
5715 get_selected_text (EvView *view)
5716 {
5717         GString *text;
5718         GList *l;
5719         gchar *normalized_text;
5720         EvRenderContext *rc;
5721
5722         text = g_string_new (NULL);
5723         rc = ev_render_context_new (NULL, view->rotation, view->scale);
5724
5725         ev_document_doc_mutex_lock ();
5726
5727         for (l = view->selection_info.selections; l != NULL; l = l->next) {
5728                 EvViewSelection *selection = (EvViewSelection *)l->data;
5729                 EvPage *page;
5730                 gchar *tmp;
5731
5732                 page = ev_document_get_page (view->document, selection->page);
5733                 ev_render_context_set_page (rc, page);
5734                 g_object_unref (page);
5735
5736                 tmp = ev_selection_get_selected_text (EV_SELECTION (view->document),
5737                                                       rc, selection->style,
5738                                                       &(selection->rect));
5739
5740                 g_string_append (text, tmp);
5741                 g_free (tmp);
5742         }
5743
5744         g_object_unref (rc);
5745
5746         ev_document_doc_mutex_unlock ();
5747
5748         normalized_text = g_utf8_normalize (text->str, text->len, G_NORMALIZE_NFKC);
5749         g_string_free (text, TRUE);
5750         return normalized_text;
5751 }
5752
5753 static void
5754 ev_view_clipboard_copy (EvView      *view,
5755                         const gchar *text)
5756 {
5757         GtkClipboard *clipboard;
5758
5759         clipboard = gtk_widget_get_clipboard (GTK_WIDGET (view),
5760                                               GDK_SELECTION_CLIPBOARD);
5761         gtk_clipboard_set_text (clipboard, text, -1);
5762 }
5763
5764 void
5765 ev_view_copy (EvView *ev_view)
5766 {
5767         char *text;
5768
5769         if (!EV_IS_SELECTION (ev_view->document))
5770                 return;
5771
5772         text = get_selected_text (ev_view);
5773         ev_view_clipboard_copy (ev_view, text);
5774         g_free (text);
5775 }
5776
5777 static void
5778 ev_view_primary_get_cb (GtkClipboard     *clipboard,
5779                         GtkSelectionData *selection_data,
5780                         guint             info,
5781                         gpointer          data)
5782 {
5783         EvView *ev_view = EV_VIEW (data);
5784
5785         if (ev_view->link_selected) {
5786                 gtk_selection_data_set_text (selection_data,
5787                                              ev_link_action_get_uri (ev_view->link_selected),
5788                                              -1);
5789         } else if (EV_IS_SELECTION (ev_view->document) &&
5790                    ev_view->selection_info.selections) {
5791                 gchar *text;
5792
5793                 text = get_selected_text (ev_view);
5794                 if (text) {
5795                         gtk_selection_data_set_text (selection_data, text, -1);
5796                         g_free (text);
5797                 }
5798         }
5799 }
5800
5801 static void
5802 ev_view_primary_clear_cb (GtkClipboard *clipboard,
5803                           gpointer      data)
5804 {
5805         EvView *view = EV_VIEW (data);
5806
5807         clear_selection (view);
5808         clear_link_selected (view);
5809 }
5810
5811 static void
5812 ev_view_update_primary_selection (EvView *ev_view)
5813 {
5814         GtkClipboard *clipboard;
5815
5816         clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view),
5817                                               GDK_SELECTION_PRIMARY);
5818
5819         if (ev_view->selection_info.selections || ev_view->link_selected) {
5820                 if (!gtk_clipboard_set_with_owner (clipboard,
5821                                                    clipboard_targets,
5822                                                    G_N_ELEMENTS (clipboard_targets),
5823                                                    ev_view_primary_get_cb,
5824                                                    ev_view_primary_clear_cb,
5825                                                    G_OBJECT (ev_view)))
5826                         ev_view_primary_clear_cb (clipboard, ev_view);
5827         } else {
5828                 if (gtk_clipboard_get_owner (clipboard) == G_OBJECT (ev_view))
5829                         gtk_clipboard_clear (clipboard);
5830         }
5831 }
5832
5833 static void
5834 clear_link_selected (EvView *view)
5835 {
5836         if (view->link_selected) {
5837                 g_object_unref (view->link_selected);
5838                 view->link_selected = NULL;
5839         }
5840 }
5841
5842 void
5843 ev_view_copy_link_address (EvView       *view,
5844                            EvLinkAction *action)
5845 {
5846         clear_link_selected (view);
5847
5848         ev_view_clipboard_copy (view, ev_link_action_get_uri (action));
5849
5850         view->link_selected = g_object_ref (action);
5851         ev_view_update_primary_selection (view);
5852 }
5853
5854 /*** Cursor operations ***/
5855
5856 static GdkCursor *
5857 ev_view_create_invisible_cursor(void)
5858 {
5859        GdkBitmap *empty;
5860        GdkColor black = { 0, 0, 0, 0 };
5861        static char bits[] = { 0x00 };
5862
5863        empty = gdk_bitmap_create_from_data (NULL, bits, 1, 1);
5864
5865        return gdk_cursor_new_from_pixmap (empty, empty, &black, &black, 0, 0);
5866 }
5867
5868 static void
5869 ev_view_set_cursor (EvView *view, EvViewCursor new_cursor)
5870 {
5871         GdkCursor *cursor = NULL;
5872         GdkDisplay *display;
5873         GtkWidget *widget;
5874
5875         if (view->cursor == new_cursor) {
5876                 return;
5877         }
5878
5879         widget = gtk_widget_get_toplevel (GTK_WIDGET (view));
5880         display = gtk_widget_get_display (widget);
5881         view->cursor = new_cursor;
5882
5883         switch (new_cursor) {
5884                 case EV_VIEW_CURSOR_NORMAL:
5885                         gdk_window_set_cursor (view->layout.bin_window, NULL);
5886                         break;
5887                 case EV_VIEW_CURSOR_IBEAM:
5888                         cursor = gdk_cursor_new_for_display (display, GDK_XTERM);
5889                         break;
5890                 case EV_VIEW_CURSOR_LINK:
5891                         cursor = gdk_cursor_new_for_display (display, GDK_HAND2);
5892                         break;
5893                 case EV_VIEW_CURSOR_WAIT:
5894                         cursor = gdk_cursor_new_for_display (display, GDK_WATCH);
5895                         break;
5896                 case EV_VIEW_CURSOR_HIDDEN:
5897                         cursor = ev_view_create_invisible_cursor ();
5898                         break;
5899                 case EV_VIEW_CURSOR_DRAG:
5900                         cursor = gdk_cursor_new_for_display (display, GDK_FLEUR);
5901                         break;
5902                 case EV_VIEW_CURSOR_AUTOSCROLL:
5903                         cursor = gdk_cursor_new_for_display (display, GDK_DOUBLE_ARROW);
5904                         break;
5905         }
5906
5907         if (cursor) {
5908                 gdk_window_set_cursor (view->layout.bin_window, cursor);
5909                 gdk_cursor_unref (cursor);
5910                 gdk_flush();
5911         }
5912 }
5913
5914 void
5915 ev_view_hide_cursor (EvView *view)
5916 {
5917        ev_view_set_cursor (view, EV_VIEW_CURSOR_HIDDEN);
5918 }
5919
5920 void
5921 ev_view_show_cursor (EvView *view)
5922 {
5923        ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
5924 }
5925
5926 static void
5927 ev_view_reset_presentation_state (EvView *view)
5928 {
5929         if (!view->presentation ||
5930             view->presentation_state == EV_PRESENTATION_NORMAL)
5931                 return;
5932
5933         view->presentation_state = EV_PRESENTATION_NORMAL;
5934         gdk_window_set_background (view->layout.bin_window,
5935                                    &GTK_WIDGET (view)->style->black);
5936         gtk_widget_queue_draw (GTK_WIDGET (view));
5937 }
5938
5939 gboolean
5940 ev_view_next_page (EvView *view)
5941 {
5942         int page, n_pages;
5943
5944         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
5945
5946         if (!view->page_cache)
5947                 return FALSE;
5948
5949         if (view->presentation &&
5950             (view->presentation_state == EV_PRESENTATION_BLACK ||
5951              view->presentation_state == EV_PRESENTATION_WHITE)) {
5952                 ev_view_reset_presentation_state (view);
5953                 return FALSE;
5954         }
5955
5956         if (view->animation) {
5957                 ev_view_transition_animation_finish (view->animation, view);
5958                 return TRUE;
5959         }
5960
5961         ev_view_presentation_transition_stop (view);
5962         ev_view_reset_presentation_state (view);
5963
5964         page = ev_page_cache_get_current_page (view->page_cache);
5965         n_pages = ev_page_cache_get_n_pages (view->page_cache);
5966
5967         if (view->dual_page && !view->presentation)
5968                 page = page + 2;
5969         else
5970                 page = page + 1;
5971
5972         if (page < n_pages) {
5973                 ev_page_cache_set_current_page (view->page_cache, page);
5974                 return TRUE;
5975         } else if (view->presentation && page == n_pages) {
5976                 view->presentation_state = EV_PRESENTATION_END;
5977                 gtk_widget_queue_draw (GTK_WIDGET (view));
5978                 return TRUE;
5979         } else if (view->dual_page && page == n_pages) {
5980                 ev_page_cache_set_current_page (view->page_cache, page - 1);
5981                 return TRUE;
5982         } else {
5983                 return FALSE;
5984         }
5985 }
5986
5987 gboolean
5988 ev_view_previous_page (EvView *view)
5989 {
5990         int page;
5991
5992         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
5993
5994         if (!view->page_cache)
5995                 return FALSE;
5996
5997         if (view->presentation &&
5998             view->presentation_state == EV_PRESENTATION_END) {
5999                 ev_view_reset_presentation_state (view);
6000                 return TRUE;
6001         }
6002
6003         if (view->presentation &&
6004             (view->presentation_state == EV_PRESENTATION_BLACK ||
6005              view->presentation_state == EV_PRESENTATION_WHITE)) {
6006                 ev_view_reset_presentation_state (view);
6007                 return FALSE;
6008         }
6009
6010         if (view->animation) {
6011                 ev_view_transition_animation_finish (view->animation, view);
6012                 return TRUE;
6013         }
6014
6015         ev_view_reset_presentation_state (view);
6016
6017         page = ev_page_cache_get_current_page (view->page_cache);
6018
6019         if (view->dual_page && !view->presentation)
6020                 page = page - 2;
6021         else
6022                 page = page - 1;
6023
6024         if (page >= 0) {
6025                 ev_page_cache_set_current_page (view->page_cache, page);
6026                 return TRUE;
6027         } else if (ev_view_get_dual_page (view) && page == -1) {
6028                 ev_page_cache_set_current_page (view->page_cache, 0);
6029                 return TRUE;
6030         } else {
6031                 return FALSE;
6032         }
6033 }
6034
6035 /*** Enum description for usage in signal ***/
6036
6037 GType
6038 ev_sizing_mode_get_type (void)
6039 {
6040   static GType etype = 0;
6041   if (etype == 0) {
6042     static const GEnumValue values[] = {
6043       { EV_SIZING_FIT_WIDTH, "EV_SIZING_FIT_WIDTH", "fit-width" },
6044       { EV_SIZING_BEST_FIT, "EV_SIZING_BEST_FIT", "best-fit" },
6045       { EV_SIZING_FREE, "EV_SIZING_FREE", "free" },
6046       { 0, NULL, NULL }
6047     };
6048     etype = g_enum_register_static ("EvSizingMode", values);
6049   }
6050   return etype;
6051 }
6052
6053 GType
6054 ev_scroll_type_get_type (void)
6055 {
6056   static GType etype = 0;
6057   if (etype == 0) {
6058     static const GEnumValue values[] = {
6059       { EV_SCROLL_PAGE_FORWARD, "EV_SCROLL_PAGE_FORWARD", "scroll-page-forward" },
6060       { EV_SCROLL_PAGE_BACKWARD, "EV_SCROLL_PAGE_BACKWARD", "scroll-page-backward" },
6061       { EV_SCROLL_STEP_FORWARD, "EV_SCROLL_STEP_FORWARD", "scroll-step-forward" },
6062       { EV_SCROLL_STEP_FORWARD, "EV_SCROLL_STEP_FORWARD", "scroll-step-forward" },
6063       { EV_SCROLL_STEP_UP, "EV_SCROLL_STEP_UP", "scroll-step-up" },
6064       { EV_SCROLL_STEP_DOWN, "EV_SCROLL_STEP_DOWN", "scroll-step-down" },
6065       { 0, NULL, NULL }
6066     };
6067     etype = g_enum_register_static ("EvScrollType", values);
6068   }
6069   return etype;
6070 }
6071
6072 void
6073 ev_view_update_view_size (EvView *view, GtkScrolledWindow * scrolled_window)
6074 {
6075         int width, height;
6076         GtkRequisition vsb_requisition;
6077         GtkRequisition hsb_requisition;
6078         int scrollbar_spacing;
6079
6080         /* Calculate the width available for the content */
6081         width  = GTK_WIDGET (scrolled_window)->allocation.width;
6082         height = GTK_WIDGET (scrolled_window)->allocation.height;
6083
6084         if (gtk_scrolled_window_get_shadow_type (scrolled_window) == GTK_SHADOW_IN
6085             && view) {
6086                 width -=  2 * GTK_WIDGET(view)->style->xthickness;
6087                 height -= 2 * GTK_WIDGET(view)->style->ythickness;
6088         }
6089
6090         gtk_widget_size_request (scrolled_window->vscrollbar, &vsb_requisition);
6091         gtk_widget_size_request (scrolled_window->hscrollbar, &hsb_requisition);
6092         gtk_widget_style_get (GTK_WIDGET (scrolled_window),
6093                               "scrollbar_spacing",
6094                               &scrollbar_spacing,
6095                               NULL);
6096
6097         if (EV_IS_VIEW(view)) {
6098                 ev_view_set_zoom_for_size (EV_VIEW (view),
6099                                            MAX (1, width),
6100                                            MAX (1, height),
6101                                            vsb_requisition.width + scrollbar_spacing,
6102                                            hsb_requisition.height + scrollbar_spacing);
6103         }
6104 }