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