libview/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-lib.h>
  28 #include <gtk/gtk.h>
  29 #include <gdk/gdkkeysyms.h>
  30
  31 #include "ev-mapping.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-page-cache.h"
  38 #include "ev-pixbuf-cache.h"
  39 #include "ev-transition-animation.h"
  40 #include "ev-view-marshal.h"
  41 #include "ev-document-annotations.h"
  42 #include "ev-annotation-window.h"
  43 #include "ev-view.h"
  44 #include "ev-view-accessible.h"
  45 #include "ev-view-private.h"
  46 #include "ev-view-type-builtins.h"
  47
  48 #define EV_VIEW_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass), EV_TYPE_VIEW, EvViewClass))
  49 #define EV_IS_VIEW_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), EV_TYPE_VIEW))
  50 #define EV_VIEW_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj), EV_TYPE_VIEW, EvViewClass))
  51
  52 enum {
  53         PROP_0,
  54         PROP_CONTINUOUS,
  55         PROP_DUAL_PAGE,
  56         PROP_FULLSCREEN,
  57         PROP_PRESENTATION,
  58         PROP_SIZING_MODE,
  59         PROP_ZOOM,
  60         PROP_ROTATION,
  61         PROP_HAS_SELECTION,
  62 };
  63
  64 enum {
  65         SIGNAL_BINDING_ACTIVATED,
  66         SIGNAL_ZOOM_INVALID,
  67         SIGNAL_HANDLE_LINK,
  68         SIGNAL_EXTERNAL_LINK,
  69         SIGNAL_POPUP_MENU,
  70         N_SIGNALS,
  71 };
  72
  73 enum {
  74         TARGET_DND_URI,
  75         TARGET_DND_TEXT,
  76         TARGET_DND_IMAGE
  77 };
  78
  79 static guint signals[N_SIGNALS];
  80
  81 typedef enum {
  82         EV_VIEW_FIND_NEXT,
  83         EV_VIEW_FIND_PREV
  84 } EvViewFindDirection;
  85
  86 #define ZOOM_IN_FACTOR  1.2
  87 #define ZOOM_OUT_FACTOR (1.0/ZOOM_IN_FACTOR)
  88
  89 #define MIN_SCALE 0.05409
  90 #define MAX_SCALE 4.0
  91
  92 #define SCROLL_TIME 150
  93
  94 /*** Scrolling ***/
  95 static void       scroll_to_current_page                     (EvView *view,
  96                                                               GtkOrientation orientation);
  97 static void       ev_view_set_scroll_adjustments             (GtkLayout          *layout,
  98                                                               GtkAdjustment      *hadjustment,
  99                                                               GtkAdjustment      *vadjustment);
 100 static void       view_update_range_and_current_page         (EvView             *view);
 101 static void       set_scroll_adjustment                      (EvView             *view,
 102                                                               GtkOrientation      orientation,
 103                                                               GtkAdjustment      *adjustment);
 104 static void       add_scroll_binding_keypad                  (GtkBindingSet      *binding_set,
 105                                                               guint               keyval,
 106                                                               GdkModifierType modifiers,
 107                                                               GtkScrollType       scroll,
 108                                                               gboolean            horizontal);
 109 static void       ensure_rectangle_is_visible                (EvView             *view,
 110                                                               GdkRectangle       *rect);
 111
 112 /*** Geometry computations ***/
 113 static void       compute_border                             (EvView             *view,
 114                                                               int                 width,
 115                                                               int                 height,
 116                                                               GtkBorder          *border);
 117 static void       get_page_y_offset                          (EvView *view,
 118                                                               int page,
 119                                                               double zoom,
 120                                                               int *y_offset);
 121 static gboolean   get_page_extents                           (EvView             *view,
 122                                                               gint                page,
 123                                                               GdkRectangle       *page_area,
 124                                                               GtkBorder          *border);
 125 static void       view_rect_to_doc_rect                      (EvView             *view,
 126                                                               GdkRectangle       *view_rect,
 127                                                               GdkRectangle       *page_area,
 128                                                               EvRectangle        *doc_rect);
 129 static void       doc_rect_to_view_rect                      (EvView             *view,
 130                                                               int                 page,
 131                                                               EvRectangle        *doc_rect,
 132                                                               GdkRectangle       *view_rect);
 133 static void       find_page_at_location                      (EvView             *view,
 134                                                               gdouble             x,
 135                                                               gdouble             y,
 136                                                               gint               *page,
 137                                                               gint               *x_offset,
 138                                                               gint               *y_offset);
 139 static gboolean  doc_point_to_view_point                     (EvView             *view,
 140                                                               int                 page,
 141                                                               EvPoint            *doc_point,
 142                                                               GdkPoint           *view_point);
 143 /*** Hyperrefs ***/
 144 static EvLink *   ev_view_get_link_at_location               (EvView             *view,
 145                                                               gdouble             x,
 146                                                               gdouble             y);
 147 static char*      tip_from_link                              (EvView             *view,
 148                                                               EvLink             *link);
 149 /*** Forms ***/
 150 static EvFormField *ev_view_get_form_field_at_location       (EvView             *view,
 151                                                                gdouble            x,
 152                                                                gdouble            y);
 153
 154 /*** Annotations ***/
 155 static EvAnnotation *ev_view_get_annotation_at_location      (EvView             *view,
 156                                                               gdouble             x,
 157                                                               gdouble             y);
 158 static void          show_annotation_windows                 (EvView             *view,
 159                                                               gint                page);
 160 static void          hide_annotation_windows                 (EvView             *view,
 161                                                               gint                page);
 162 /*** GtkWidget implementation ***/
 163 static void       ev_view_size_request_continuous_dual_page  (EvView             *view,
 164                                                               GtkRequisition     *requisition);
 165 static void       ev_view_size_request_continuous            (EvView             *view,
 166                                                               GtkRequisition     *requisition);
 167 static void       ev_view_size_request_dual_page             (EvView             *view,
 168                                                               GtkRequisition     *requisition);
 169 static void       ev_view_size_request_single_page           (EvView             *view,
 170                                                               GtkRequisition     *requisition);
 171 static void       ev_view_size_request                       (GtkWidget          *widget,
 172                                                               GtkRequisition     *requisition);
 173 static void       ev_view_size_allocate                      (GtkWidget          *widget,
 174                                                               GtkAllocation      *allocation);
 175 static void       ev_view_realize                            (GtkWidget          *widget);
 176 static gboolean   ev_view_scroll_event                       (GtkWidget          *widget,
 177                                                               GdkEventScroll     *event);
 178 static gboolean   ev_view_expose_event                       (GtkWidget          *widget,
 179                                                               GdkEventExpose     *event);
 180 static gboolean   ev_view_popup_menu                         (GtkWidget          *widget);
 181 static gboolean   ev_view_button_press_event                 (GtkWidget          *widget,
 182                                                               GdkEventButton     *event);
 183 static gboolean   ev_view_motion_notify_event                (GtkWidget          *widget,
 184                                                               GdkEventMotion     *event);
 185 static gboolean   ev_view_button_release_event               (GtkWidget          *widget,
 186                                                               GdkEventButton     *event);
 187 static gboolean   ev_view_enter_notify_event                 (GtkWidget          *widget,
 188                                                               GdkEventCrossing   *event);
 189 static gboolean   ev_view_leave_notify_event                 (GtkWidget          *widget,
 190                                                               GdkEventCrossing   *event);
 191 static void       ev_view_style_set                          (GtkWidget          *widget,
 192                                                               GtkStyle           *old_style);
 193 static void       ev_view_remove_all                         (EvView             *view);
 194
 195 static AtkObject *ev_view_get_accessible                     (GtkWidget *widget);
 196
 197 /*** Drawing ***/
 198 static guint32    ev_gdk_color_to_rgb                        (const GdkColor     *color);
 199 static void       draw_rubberband                            (GtkWidget          *widget,
 200                                                               GdkWindow          *window,
 201                                                               const GdkRectangle *rect,
 202                                                               guchar              alpha);
 203 static void       highlight_find_results                     (EvView             *view,
 204                                                               int                 page);
 205 static void       draw_one_page                              (EvView             *view,
 206                                                               gint                page,
 207                                                               cairo_t            *cr,
 208                                                               GdkRectangle       *page_area,
 209                                                               GtkBorder          *border,
 210                                                               GdkRectangle       *expose_area,
 211                                                               gboolean           *page_ready);
 212 static void       draw_loading_text                          (EvView             *view,
 213                                                               GdkRectangle       *page_area,
 214                                                               GdkRectangle       *expose_area);
 215 static void       ev_view_reload_page                        (EvView             *view,
 216                                                               gint                page,
 217                                                               GdkRegion          *region);
 218
 219 /*** Callbacks ***/
 220 static void       job_finished_cb                            (EvPixbufCache      *pixbuf_cache,
 221                                                               GdkRegion          *region,
 222                                                               EvView             *view);
 223 static void       page_changed_cb                            (EvPageCache        *page_cache,
 224                                                               int                 new_page,
 225                                                               EvView             *view);
 226 static void       on_adjustment_value_changed                (GtkAdjustment      *adjustment,
 227                                                               EvView             *view);
 228
 229 /*** GObject ***/
 230 static void       ev_view_finalize                           (GObject            *object);
 231 static void       ev_view_destroy                            (GtkObject          *object);
 232 static void       ev_view_set_property                       (GObject            *object,
 233                                                               guint               prop_id,
 234                                                               const GValue       *value,
 235                                                               GParamSpec         *pspec);
 236 static void       ev_view_get_property                       (GObject            *object,
 237                                                               guint               prop_id,
 238                                                               GValue             *value,
 239                                                               GParamSpec         *pspec);
 240 static void       ev_view_class_init                         (EvViewClass        *class);
 241 static void       ev_view_init                               (EvView             *view);
 242
 243 /*** Zoom and sizing ***/
 244 static double   zoom_for_size_fit_width                      (int doc_width,
 245                                                               int doc_height,
 246                                                               int target_width,
 247                                                               int target_height,
 248                                                               int vsb_width);
 249 static double   zoom_for_size_fit_height                     (int doc_width,
 250                                                               int doc_height,
 251                                                               int target_width,
 252                                                               int target_height,
 253                                                               int vsb_height);
 254 static double   zoom_for_size_best_fit                       (int doc_width,
 255                                                               int doc_height,
 256                                                               int target_width,
 257                                                               int target_height,
 258                                                               int vsb_width,
 259                                                               int hsb_width);
 260 static void     ev_view_zoom_for_size_presentation           (EvView *view,
 261                                                               int     width,
 262                                                               int     height);
 263 static void     ev_view_zoom_for_size_continuous_and_dual_page (EvView *view,
 264                                                                 int     width,
 265                                                                 int     height,
 266                                                                 int     vsb_width,
 267                                                                 int     hsb_height);
 268 static void     ev_view_zoom_for_size_continuous               (EvView *view,
 269                                                                 int     width,
 270                                                                 int     height,
 271                                                                 int     vsb_width,
 272                                                                 int     hsb_height);
 273 static void     ev_view_zoom_for_size_dual_page                (EvView *view,
 274                                                                 int     width,
 275                                                                 int     height,
 276                                                                 int     vsb_width,
 277                                                                 int     hsb_height);
 278 static void     ev_view_zoom_for_size_single_page              (EvView *view,
 279                                                                 int     width,
 280                                                                 int     height,
 281                                                                 int     vsb_width,
 282                                                                 int     hsb_height);
 283 /*** Cursors ***/
 284 static GdkCursor* ev_view_create_invisible_cursor            (void);
 285 static void       ev_view_set_cursor                         (EvView             *view,
 286                                                               EvViewCursor        new_cursor);
 287 static void       ev_view_handle_cursor_over_xy              (EvView *view,
 288                                                               gint x,
 289                                                               gint y);
 290
 291 /*** Find ***/
 292 static gint         ev_view_find_get_n_results               (EvView             *view,
 293                                                               gint                page);
 294 static EvRectangle *ev_view_find_get_result                  (EvView             *view,
 295                                                               gint                page,
 296                                                               gint                result);
 297 static void       jump_to_find_result                        (EvView             *view);
 298 static void       jump_to_find_page                          (EvView             *view,
 299                                                               EvViewFindDirection direction,
 300                                                               gint                shift);
 301
 302 /*** Selection ***/
 303 static void       compute_selections                         (EvView             *view,
 304                                                               EvSelectionStyle    style,
 305                                                               GdkPoint           *start,
 306                                                               GdkPoint           *stop);
 307 static void       clear_selection                            (EvView             *view);
 308 static void       clear_link_selected                        (EvView             *view);
 309 static void       selection_free                             (EvViewSelection    *selection);
 310 static char*      get_selected_text                          (EvView             *ev_view);
 311 static void       ev_view_primary_get_cb                     (GtkClipboard       *clipboard,
 312                                                               GtkSelectionData   *selection_data,
 313                                                               guint               info,
 314                                                               gpointer            data);
 315 static void       ev_view_primary_clear_cb                   (GtkClipboard       *clipboard,
 316                                                               gpointer            data);
 317 static void       ev_view_update_primary_selection           (EvView             *ev_view);
 318
 319 /*** Presentation ***/
 320 static void       ev_view_presentation_transition_start      (EvView             *ev_view);
 321 static void       ev_view_presentation_transition_stop       (EvView             *ev_view);
 322
 323
 324 G_DEFINE_TYPE (EvView, ev_view, GTK_TYPE_LAYOUT)
 325
 326 static void
 327 scroll_to_current_page (EvView *view, GtkOrientation orientation)
 328 {
 329         GdkPoint view_point;
 330
 331         if (view->document == NULL) {
 332                 return;
 333         }
 334
 335         doc_point_to_view_point (view, view->current_page, &view->pending_point, &view_point);
 336
 337         if (orientation == GTK_ORIENTATION_VERTICAL) {
 338                 view->pending_point.y = 0;
 339         } else {
 340                 view->pending_point.x = 0;
 341         }
 342
 343         if (orientation == GTK_ORIENTATION_VERTICAL) {
 344                 if (view->continuous) {
 345                         gtk_adjustment_clamp_page (view->vadjustment,
 346                                                    view_point.y - view->spacing / 2,
 347                                                    view_point.y + view->vadjustment->page_size);
 348                 } else {
 349                         gtk_adjustment_set_value (view->vadjustment,
 350                                                   CLAMP (view_point.y,
 351                                                   view->vadjustment->lower,
 352                                                   view->vadjustment->upper -
 353                                                   view->vadjustment->page_size));
 354                 }
 355         } else {
 356                 if (view->dual_page) {
 357                         gtk_adjustment_clamp_page (view->hadjustment,
 358                                                    view_point.x,
 359                                                    view_point.x + view->hadjustment->page_size);
 360                 } else {
 361                         gtk_adjustment_set_value (view->hadjustment,
 362                                                   CLAMP (view_point.x,
 363                                                   view->hadjustment->lower,
 364                                                   view->hadjustment->upper -
 365                                                   view->hadjustment->page_size));
 366                 }
 367         }
 368 }
 369
 370 static void
 371 view_set_adjustment_values (EvView         *view,
 372                             GtkOrientation  orientation)
 373 {
 374         GtkWidget *widget = GTK_WIDGET (view);
 375         GtkAdjustment *adjustment;
 376         int requisition;
 377         int allocation;
 378
 379         double factor;
 380         gint new_value;
 381
 382         if (orientation == GTK_ORIENTATION_HORIZONTAL)  {
 383                 requisition = widget->requisition.width;
 384                 allocation = widget->allocation.width;
 385                 adjustment = view->hadjustment;
 386         } else {
 387                 requisition = widget->requisition.height;
 388                 allocation = widget->allocation.height;
 389                 adjustment = view->vadjustment;
 390         }
 391
 392         if (!adjustment)
 393                 return;
 394
 395         factor = 1.0;
 396         switch (view->pending_scroll) {
 397                 case SCROLL_TO_KEEP_POSITION:
 398                 case SCROLL_TO_FIND_LOCATION:
 399                         factor = (adjustment->value) / adjustment->upper;
 400                         break;
 401                 case SCROLL_TO_PAGE_POSITION:
 402                         break;
 403                 case SCROLL_TO_CENTER:
 404                         factor = (adjustment->value + adjustment->page_size * 0.5) / adjustment->upper;
 405                         break;
 406         }
 407
 408         adjustment->page_size = allocation;
 409         adjustment->step_increment = allocation * 0.1;
 410         adjustment->page_increment = allocation * 0.9;
 411         adjustment->lower = 0;
 412         adjustment->upper = MAX (allocation, requisition);
 413
 414         /*
 415          * We add 0.5 to the values before to average out our rounding errors.
 416          */
 417         switch (view->pending_scroll) {
 418                 case SCROLL_TO_KEEP_POSITION:
 419                 case SCROLL_TO_FIND_LOCATION:
 420                         new_value = CLAMP (adjustment->upper * factor + 0.5, 0, adjustment->upper - adjustment->page_size);
 421                         gtk_adjustment_set_value (adjustment, (int)new_value);
 422                         break;
 423                 case SCROLL_TO_PAGE_POSITION:
 424                         scroll_to_current_page (view, orientation);
 425                         break;
 426                 case SCROLL_TO_CENTER:
 427                         new_value = CLAMP (adjustment->upper * factor - adjustment->page_size * 0.5 + 0.5,
 428                                            0, adjustment->upper - adjustment->page_size);
 429                         gtk_adjustment_set_value (adjustment, (int)new_value);
 430                         break;
 431         }
 432
 433         gtk_adjustment_changed (adjustment);
 434 }
 435
 436 static void
 437 view_update_range_and_current_page (EvView *view)
 438 {
 439         gint current_page;
 440         gint best_current_page = -1;
 441         gint start = view->start_page;
 442         gint end = view->end_page;
 443
 444         /* Presentation trumps all other modes */
 445         if (view->presentation) {
 446                 view->start_page = view->current_page;
 447                 view->end_page = view->current_page;
 448         } else if (view->continuous) {
 449                 GdkRectangle current_area, unused, page_area;
 450                 GtkBorder border;
 451                 gboolean found = FALSE;
 452                 gint area_max = -1, area;
 453                 int i;
 454
 455                 if (!(view->vadjustment && view->hadjustment))
 456                         return;
 457
 458                 current_area.x = view->hadjustment->value;
 459                 current_area.width = view->hadjustment->upper;
 460                 current_area.y = view->vadjustment->value;
 461                 current_area.height = view->vadjustment->page_size;
 462
 463                 for (i = 0; i < ev_page_cache_get_n_pages (view->page_cache); i++) {
 464
 465                         get_page_extents (view, i, &page_area, &border);
 466
 467                         if (gdk_rectangle_intersect (&current_area, &page_area, &unused)) {
 468                                 area = unused.width * unused.height;
 469
 470                                 if (!found) {
 471                                         area_max = area;
 472                                         view->start_page = i;
 473                                         found = TRUE;
 474                                         best_current_page = i;
 475                                 }
 476                                 if (area > area_max) {
 477                                         best_current_page = (area == area_max) ? MIN (i, best_current_page) : i;
 478                                         area_max = area;
 479                                 }
 480
 481                                 view->end_page = i;
 482                         } else if (found && view->current_page <= view->end_page) {
 483                                 break;
 484                         }
 485                 }
 486
 487         } else if (view->dual_page) {
 488                 if (view->current_page % 2 == ev_page_cache_get_dual_even_left (view->page_cache)) {
 489                         view->start_page = view->current_page;
 490                         if (view->current_page + 1 < ev_page_cache_get_n_pages (view->page_cache))
 491                                 view->end_page = view->start_page + 1;
 492                         else
 493                                 view->end_page = view->start_page;
 494                 } else {
 495                         if (view->current_page < 1)
 496                                 view->start_page = view->current_page;
 497                         else
 498                                 view->start_page = view->current_page - 1;
 499                         view->end_page = view->current_page;
 500                 }
 501         } else {
 502                 view->start_page = view->current_page;
 503                 view->end_page = view->current_page;
 504         }
 505
 506         best_current_page = MAX (best_current_page, view->start_page);
 507         current_page = ev_page_cache_get_current_page (view->page_cache);
 508
 509         if ((current_page != best_current_page) && (view->pending_scroll == SCROLL_TO_KEEP_POSITION)) {
 510                 view->current_page = best_current_page;
 511                 ev_page_cache_set_current_page (view->page_cache, best_current_page);
 512         }
 513
 514         if (start != view->start_page || end != view->end_page) {
 515                 gint i;
 516
 517                 for (i = start; i < view->start_page; i++) {
 518                         hide_annotation_windows (view, i);
 519                 }
 520
 521                 for (i = end; i > view->end_page; i--) {
 522                         hide_annotation_windows (view, i);
 523                 }
 524         }
 525
 526         ev_pixbuf_cache_set_page_range (view->pixbuf_cache,
 527                                         view->start_page,
 528                                         view->end_page,
 529                                         view->rotation,
 530                                         view->scale,
 531                                         view->selection_info.selections);
 532 }
 533
 534 static void
 535 set_scroll_adjustment (EvView *view,
 536                        GtkOrientation  orientation,
 537                        GtkAdjustment  *adjustment)
 538 {
 539         GtkAdjustment **to_set;
 540
 541         if (orientation == GTK_ORIENTATION_HORIZONTAL)
 542                 to_set = &view->hadjustment;
 543         else
 544                 to_set = &view->vadjustment;
 545
 546         if (*to_set != adjustment) {
 547                 if (*to_set) {
 548                         g_signal_handlers_disconnect_by_func (*to_set,
 549                                                               (gpointer) on_adjustment_value_changed,
 550                                                               view);
 551                         g_object_unref (*to_set);
 552                 }
 553
 554                 *to_set = adjustment;
 555                 view_set_adjustment_values (view, orientation);
 556
 557                 if (*to_set) {
 558                         g_object_ref (*to_set);
 559                         g_signal_connect (*to_set, "value_changed",
 560                                           G_CALLBACK (on_adjustment_value_changed), view);
 561                 }
 562         }
 563 }
 564
 565 static void
 566 ev_view_set_scroll_adjustments (GtkLayout      *layout,
 567                                 GtkAdjustment  *hadjustment,
 568                                 GtkAdjustment  *vadjustment)
 569 {
 570         EvView *view = EV_VIEW (layout);
 571
 572         set_scroll_adjustment (view, GTK_ORIENTATION_HORIZONTAL, hadjustment);
 573         set_scroll_adjustment (view, GTK_ORIENTATION_VERTICAL, vadjustment);
 574
 575         on_adjustment_value_changed (NULL, view);
 576 }
 577
 578 static void
 579 add_scroll_binding_keypad (GtkBindingSet  *binding_set,
 580                            guint           keyval,
 581                            GdkModifierType modifiers,
 582                            GtkScrollType   scroll,
 583                            gboolean        horizontal)
 584 {
 585   guint keypad_keyval = keyval - GDK_Left + GDK_KP_Left;
 586
 587   gtk_binding_entry_add_signal (binding_set, keyval, modifiers,
 588                                 "binding_activated", 2,
 589                                 GTK_TYPE_SCROLL_TYPE, scroll,
 590                                 G_TYPE_BOOLEAN, horizontal);
 591   gtk_binding_entry_add_signal (binding_set, keypad_keyval, modifiers,
 592                                 "binding_activated", 2,
 593                                 GTK_TYPE_SCROLL_TYPE, scroll,
 594                                 G_TYPE_BOOLEAN, horizontal);
 595 }
 596
 597 void
 598 ev_view_scroll (EvView        *view,
 599                 GtkScrollType  scroll,
 600                 gboolean       horizontal)
 601 {
 602         GtkAdjustment *adjustment;
 603         double value, increment;
 604         gboolean first_page = FALSE;
 605         gboolean last_page = FALSE;
 606
 607         view->jump_to_find_result = FALSE;
 608
 609         if (view->presentation || view->sizing_mode == EV_SIZING_BEST_FIT) {
 610                 switch (scroll) {
 611                         case GTK_SCROLL_PAGE_BACKWARD:
 612                         case GTK_SCROLL_STEP_BACKWARD:
 613                                 ev_view_previous_page (view);
 614                                 break;
 615                         case GTK_SCROLL_PAGE_FORWARD:
 616                         case GTK_SCROLL_STEP_FORWARD:
 617                                 ev_view_next_page (view);
 618                                 break;
 619                         default:
 620                                 break;
 621                 }
 622                 return;
 623         }
 624
 625         /* Assign values for increment and vertical adjustment */
 626         adjustment = horizontal ? view->hadjustment : view->vadjustment;
 627         increment = adjustment->page_size * 0.75;
 628         value = adjustment->value;
 629
 630         /* Assign boolean for first and last page */
 631         if (view->current_page == 0)
 632                 first_page = TRUE;
 633         if (view->current_page == ev_page_cache_get_n_pages (view->page_cache) - 1)
 634                 last_page = TRUE;
 635
 636         switch (scroll) {
 637                 case GTK_SCROLL_PAGE_BACKWARD:
 638                         /* Do not jump backwards if at the first page */
 639                         if (value == (adjustment->lower) && first_page) {
 640                                 /* Do nothing */
 641                                 /* At the top of a page, assign the upper bound limit of previous page */
 642                         } else if (value == (adjustment->lower)) {
 643                                 value = adjustment->upper - adjustment->page_size;
 644                                 ev_view_previous_page (view);
 645                                 /* Jump to the top */
 646                         } else {
 647                                 value = MAX (value - increment, adjustment->lower);
 648                         }
 649                         break;
 650                 case GTK_SCROLL_PAGE_FORWARD:
 651                         /* Do not jump forward if at the last page */
 652                         if (value == (adjustment->upper - adjustment->page_size) && last_page) {
 653                                 /* Do nothing */
 654                         /* At the bottom of a page, assign the lower bound limit of next page */
 655                         } else if (value == (adjustment->upper - adjustment->page_size)) {
 656                                 value = 0;
 657                                 ev_view_next_page (view);
 658                         /* Jump to the bottom */
 659                         } else {
 660                                 value = MIN (value + increment, adjustment->upper - adjustment->page_size);
 661                         }
 662                         break;
 663                 case GTK_SCROLL_STEP_BACKWARD:
 664                         value -= adjustment->step_increment;
 665                         break;
 666                 case GTK_SCROLL_STEP_FORWARD:
 667                         value += adjustment->step_increment;
 668                         break;
 669                 case GTK_SCROLL_STEP_DOWN:
 670                         value -= adjustment->step_increment / 10;
 671                         break;
 672                 case GTK_SCROLL_STEP_UP:
 673                         value += adjustment->step_increment / 10;
 674                         break;
 675                 default:
 676                         break;
 677         }
 678
 679         value = CLAMP (value, adjustment->lower,
 680                        adjustment->upper - adjustment->page_size);
 681
 682         gtk_adjustment_set_value (adjustment, value);
 683 }
 684
 685 #define MARGIN 5
 686
 687 static void
 688 ensure_rectangle_is_visible (EvView *view, GdkRectangle *rect)
 689 {
 690         GtkWidget *widget = GTK_WIDGET (view);
 691         GtkAdjustment *adjustment;
 692         int value;
 693
 694         view->pending_scroll = SCROLL_TO_FIND_LOCATION;
 695
 696         adjustment = view->vadjustment;
 697
 698         if (rect->y < adjustment->value) {
 699                 value = MAX (adjustment->lower, rect->y - MARGIN);
 700                 gtk_adjustment_set_value (view->vadjustment, value);
 701         } else if (rect->y + rect->height >
 702                    adjustment->value + widget->allocation.height) {
 703                 value = MIN (adjustment->upper, rect->y + rect->height -
 704                              widget->allocation.height + MARGIN);
 705                 gtk_adjustment_set_value (view->vadjustment, value);
 706         }
 707
 708         adjustment = view->hadjustment;
 709
 710         if (rect->x < adjustment->value) {
 711                 value = MAX (adjustment->lower, rect->x - MARGIN);
 712                 gtk_adjustment_set_value (view->hadjustment, value);
 713         } else if (rect->x + rect->height >
 714                    adjustment->value + widget->allocation.width) {
 715                 value = MIN (adjustment->upper, rect->x + rect->width -
 716                              widget->allocation.width + MARGIN);
 717                 gtk_adjustment_set_value (view->hadjustment, value);
 718         }
 719
 720         gtk_widget_queue_resize (GTK_WIDGET (view));
 721 }
 722
 723 /*** Geometry computations ***/
 724
 725 static void
 726 compute_border (EvView *view, int width, int height, GtkBorder *border)
 727 {
 728         if (view->presentation) {
 729                 border->left = 0;
 730                 border->right = 0;
 731                 border->top = 0;
 732                 border->bottom = 0;
 733         } else {
 734                 ev_document_misc_get_page_border_size (width, height, border);
 735         }
 736 }
 737
 738 static void
 739 get_page_y_offset (EvView *view, int page, double zoom, int *y_offset)
 740 {
 741         int max_width, offset;
 742         GtkBorder border;
 743
 744         g_return_if_fail (y_offset != NULL);
 745
 746         ev_page_cache_get_max_width (view->page_cache, view->rotation, zoom, &max_width);
 747
 748         compute_border (view, max_width, max_width, &border);
 749
 750         if (view->dual_page) {
 751                 ev_page_cache_get_height_to_page (view->page_cache, page,
 752                                                   view->rotation, zoom, NULL, &offset);
 753                 offset += ((page + ev_page_cache_get_dual_even_left (view->page_cache)) / 2 + 1) * view->spacing + ((page + ev_page_cache_get_dual_even_left (view->page_cache)) / 2 ) * (border.top + border.bottom);
 754         } else {
 755                 ev_page_cache_get_height_to_page (view->page_cache, page,
 756                                                   view->rotation, zoom, &offset, NULL);
 757                 offset += (page + 1) * view->spacing + page * (border.top + border.bottom);
 758         }
 759
 760         *y_offset = offset;
 761         return;
 762 }
 763
 764 static gboolean
 765 get_page_extents (EvView       *view,
 766                   gint          page,
 767                   GdkRectangle *page_area,
 768                   GtkBorder    *border)
 769 {
 770         GtkWidget *widget;
 771         int width, height;
 772
 773         widget = GTK_WIDGET (view);
 774
 775         /* Get the size of the page */
 776         ev_page_cache_get_size (view->page_cache, page,
 777                                 view->rotation,
 778                                 view->scale,
 779                                 &width, &height);
 780         compute_border (view, width, height, border);
 781         page_area->width = width + border->left + border->right;
 782         page_area->height = height + border->top + border->bottom;
 783
 784         if (view->presentation) {
 785                 page_area->x = (MAX (0, widget->allocation.width - width))/2;
 786                 page_area->y = (MAX (0, widget->allocation.height - height))/2;
 787         } else if (view->continuous) {
 788                 gint max_width;
 789                 gint x, y;
 790
 791                 ev_page_cache_get_max_width (view->page_cache, view->rotation,
 792                                              view->scale, &max_width);
 793                 max_width = max_width + border->left + border->right;
 794                 /* Get the location of the bounding box */
 795                 if (view->dual_page) {
 796                         x = view->spacing + ((page % 2 == ev_page_cache_get_dual_even_left (view->page_cache)) ? 0 : 1) * (max_width + view->spacing);
 797                         x = x + MAX (0, widget->allocation.width - (max_width * 2 + view->spacing * 3)) / 2;
 798                         if (page % 2 == ev_page_cache_get_dual_even_left (view->page_cache))
 799                                 x = x + (max_width - width - border->left - border->right);
 800                 } else {
 801                         x = view->spacing;
 802                         x = x + MAX (0, widget->allocation.width - (width + view->spacing * 2)) / 2;
 803                 }
 804
 805                 get_page_y_offset (view, page, view->scale, &y);
 806
 807                 page_area->x = x;
 808                 page_area->y = y;
 809         } else {
 810                 gint x, y;
 811                 if (view->dual_page) {
 812                         gint width_2, height_2;
 813                         gint max_width = width;
 814                         gint max_height = height;
 815                         GtkBorder overall_border;
 816                         gint other_page;
 817
 818                         other_page = (page % 2 == ev_page_cache_get_dual_even_left (view->page_cache)) ? page + 1: page - 1;
 819
 820                         /* First, we get the bounding box of the two pages */
 821                         if (other_page < ev_page_cache_get_n_pages (view->page_cache)
 822                             && (0 <= other_page)) {
 823                                 ev_page_cache_get_size (view->page_cache,
 824                                                         other_page,
 825                                                         view->rotation,
 826                                                         view->scale,
 827                                                         &width_2, &height_2);
 828                                 if (width_2 > width)
 829                                         max_width = width_2;
 830                                 if (height_2 > height)
 831                                         max_height = height_2;
 832                         }
 833                         compute_border (view, max_width, max_height, &overall_border);
 834
 835                         /* Find the offsets */
 836                         x = view->spacing;
 837                         y = view->spacing;
 838
 839                         /* Adjust for being the left or right page */
 840                         if (page % 2 == ev_page_cache_get_dual_even_left (view->page_cache))
 841                                 x = x + max_width - width;
 842                         else
 843                                 x = x + (max_width + overall_border.left + overall_border.right) + view->spacing;
 844
 845                         y = y + (max_height - height)/2;
 846
 847                         /* Adjust for extra allocation */
 848                         x = x + MAX (0, widget->allocation.width -
 849                                      ((max_width + overall_border.left + overall_border.right) * 2 + view->spacing * 3))/2;
 850                         y = y + MAX (0, widget->allocation.height - (height + view->spacing * 2))/2;
 851                 } else {
 852                         x = view->spacing;
 853                         y = view->spacing;
 854
 855                         /* Adjust for extra allocation */
 856                         x = x + MAX (0, widget->allocation.width - (width + border->left + border->right + view->spacing * 2))/2;
 857                         y = y + MAX (0, widget->allocation.height - (height + border->top + border->bottom +  view->spacing * 2))/2;
 858                 }
 859
 860                 page_area->x = x;
 861                 page_area->y = y;
 862         }
 863
 864         return TRUE;
 865 }
 866
 867 static void
 868 view_point_to_doc_point (EvView *view,
 869                          GdkPoint *view_point,
 870                          GdkRectangle *page_area,
 871                          double  *doc_point_x,
 872                          double  *doc_point_y)
 873 {
 874         *doc_point_x = (double) (view_point->x - page_area->x) / view->scale;
 875         *doc_point_y = (double) (view_point->y - page_area->y) / view->scale;
 876 }
 877
 878 static void
 879 view_rect_to_doc_rect (EvView *view,
 880                        GdkRectangle *view_rect,
 881                        GdkRectangle *page_area,
 882                        EvRectangle  *doc_rect)
 883 {
 884         doc_rect->x1 = (double) (view_rect->x - page_area->x) / view->scale;
 885         doc_rect->y1 = (double) (view_rect->y - page_area->y) / view->scale;
 886         doc_rect->x2 = doc_rect->x1 + (double) view_rect->width / view->scale;
 887         doc_rect->y2 = doc_rect->y1 + (double) view_rect->height / view->scale;
 888 }
 889
 890 static gboolean
 891 doc_point_to_view_point (EvView       *view,
 892                          int           page,
 893                          EvPoint      *doc_point,
 894                          GdkPoint     *view_point)
 895 {
 896         GdkRectangle page_area;
 897         GtkBorder border;
 898         double x, y, view_x, view_y;
 899         int width, height;
 900
 901         ev_page_cache_get_size (view->page_cache, page,
 902                                 view->rotation,
 903                                 1.0,
 904                                 &width, &height);
 905
 906         if (view->rotation == 0) {
 907                 x = doc_point->x;
 908                 y = doc_point->y;
 909         } else if (view->rotation == 90) {
 910                 x = width - doc_point->y;
 911                 y = doc_point->x;
 912         } else if (view->rotation == 180) {
 913                 x = width - doc_point->x;
 914                 y = height - doc_point->y;
 915         } else if (view->rotation == 270) {
 916                 x = doc_point->y;
 917                 y = height - doc_point->x;
 918         } else {
 919                 g_assert_not_reached ();
 920         }
 921
 922         get_page_extents (view, page, &page_area, &border);
 923
 924         view_x = x * view->scale;
 925         view_y = y * view->scale;
 926         view_point->x = view_x + page_area.x;
 927         view_point->y = view_y + page_area.y;
 928
 929         return (view_x > 0 && view_x <= page_area.width &&
 930                 view_y > 0 && view_y <= page_area.height);
 931 }
 932
 933 static void
 934 doc_rect_to_view_rect (EvView       *view,
 935                        int           page,
 936                        EvRectangle  *doc_rect,
 937                        GdkRectangle *view_rect)
 938 {
 939         GdkRectangle page_area;
 940         GtkBorder border;
 941         double x, y, w, h;
 942         int width, height;
 943
 944         ev_page_cache_get_size (view->page_cache, page,
 945                                 view->rotation,
 946                                 1.0,
 947                                 &width, &height);
 948
 949         if (view->rotation == 0) {
 950                 x = doc_rect->x1;
 951                 y = doc_rect->y1;
 952                 w = doc_rect->x2 - doc_rect->x1;
 953                 h = doc_rect->y2 - doc_rect->y1;
 954         } else if (view->rotation == 90) {
 955                 x = width - doc_rect->y2;
 956                 y = doc_rect->x1;
 957                 w = doc_rect->y2 - doc_rect->y1;
 958                 h = doc_rect->x2 - doc_rect->x1;
 959         } else if (view->rotation == 180) {
 960                 x = width - doc_rect->x2;
 961                 y = height - doc_rect->y2;
 962                 w = doc_rect->x2 - doc_rect->x1;
 963                 h = doc_rect->y2 - doc_rect->y1;
 964         } else if (view->rotation == 270) {
 965                 x = doc_rect->y1;
 966                 y = height - doc_rect->x2;
 967                 w = doc_rect->y2 - doc_rect->y1;
 968                 h = doc_rect->x2 - doc_rect->x1;
 969         } else {
 970                 g_assert_not_reached ();
 971         }
 972
 973         get_page_extents (view, page, &page_area, &border);
 974
 975         view_rect->x = x * view->scale + page_area.x;
 976         view_rect->y = y * view->scale + page_area.y;
 977         view_rect->width = w * view->scale;
 978         view_rect->height = h * view->scale;
 979 }
 980
 981 static void
 982 find_page_at_location (EvView  *view,
 983                        gdouble  x,
 984                        gdouble  y,
 985                        gint    *page,
 986                        gint    *x_offset,
 987                        gint    *y_offset)
 988 {
 989         int i;
 990
 991         if (view->document == NULL)
 992                 return;
 993
 994         g_assert (page);
 995         g_assert (x_offset);
 996         g_assert (y_offset);
 997
 998         for (i = view->start_page; i <= view->end_page; i++) {
 999                 GdkRectangle page_area;
1000                 GtkBorder border;
1001
1002                 if (! get_page_extents (view, i, &page_area, &border))
1003                         continue;
1004
1005                 if ((x >= page_area.x + border.left) &&
1006                     (x < page_area.x + page_area.width - border.right) &&
1007                     (y >= page_area.y + border.top) &&
1008                     (y < page_area.y + page_area.height - border.bottom)) {
1009                         *page = i;
1010                         *x_offset = x - (page_area.x + border.left);
1011                         *y_offset = y - (page_area.y + border.top);
1012                         return;
1013                 }
1014         }
1015
1016         *page = -1;
1017 }
1018
1019 static gboolean
1020 location_in_text (EvView  *view,
1021                   gdouble  x,
1022                   gdouble  y)
1023 {
1024         GdkRegion *region;
1025         gint page = -1;
1026         gint x_offset = 0, y_offset = 0;
1027
1028         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1029
1030         if (page == -1)
1031                 return FALSE;
1032
1033         region = ev_pixbuf_cache_get_text_mapping (view->pixbuf_cache, page);
1034
1035         if (region)
1036                 return gdk_region_point_in (region, x_offset / view->scale, y_offset / view->scale);
1037         else
1038                 return FALSE;
1039 }
1040
1041 static int
1042 ev_view_get_width (EvView *view)
1043 {
1044         return GTK_WIDGET (view)->allocation.width;
1045 }
1046
1047 static int
1048 ev_view_get_height (EvView *view)
1049 {
1050         return GTK_WIDGET (view)->allocation.height;
1051 }
1052
1053 static gboolean
1054 location_in_selected_text (EvView  *view,
1055                            gdouble  x,
1056                            gdouble  y)
1057 {
1058         gint page = -1;
1059         gint x_offset = 0, y_offset = 0;
1060         EvViewSelection *selection;
1061         GList *l = NULL;
1062
1063         for (l = view->selection_info.selections; l != NULL; l = l->next) {
1064                 selection = (EvViewSelection *)l->data;
1065
1066                 find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1067
1068                 if (page != selection->page)
1069                         continue;
1070
1071                 if (selection->covered_region &&
1072                     gdk_region_point_in (selection->covered_region, x_offset, y_offset))
1073                         return TRUE;
1074         }
1075
1076         return FALSE;
1077 }
1078
1079 static gboolean
1080 get_doc_point_from_offset (EvView *view,
1081                            gint    page,
1082                            gint    x_offset,
1083                            gint    y_offset,
1084                            gint   *x_new,
1085                            gint   *y_new)
1086 {
1087         int width, height;
1088         double x, y;
1089
1090         ev_page_cache_get_size (view->page_cache, page,
1091                                 view->rotation,
1092                                 1.0,
1093                                 &width, &height);
1094
1095         x_offset = x_offset / view->scale;
1096         y_offset = y_offset / view->scale;
1097
1098         if (view->rotation == 0) {
1099                 x = x_offset;
1100                 y = y_offset;
1101         } else if (view->rotation == 90) {
1102                 x = y_offset;
1103                 y = width - x_offset;
1104         } else if (view->rotation == 180) {
1105                 x = width - x_offset;
1106                 y = height - y_offset;
1107         } else if (view->rotation == 270) {
1108                 x = height - y_offset;
1109                 y = x_offset;
1110         } else {
1111                 g_assert_not_reached ();
1112         }
1113
1114         *x_new = x;
1115         *y_new = y;
1116
1117         return TRUE;
1118 }
1119
1120 /*** Hyperref ***/
1121 static EvLink *
1122 ev_view_get_link_at_location (EvView  *view,
1123                               gdouble  x,
1124                               gdouble  y)
1125 {
1126         gint page = -1;
1127         gint x_offset = 0, y_offset = 0;
1128         gint x_new = 0, y_new = 0;
1129         GList *link_mapping;
1130
1131         if (!EV_IS_DOCUMENT_LINKS (view->document))
1132                 return NULL;
1133
1134         x += view->scroll_x;
1135         y += view->scroll_y;
1136
1137         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1138
1139         if (page == -1)
1140                 return NULL;
1141
1142
1143         if (get_doc_point_from_offset (view, page, x_offset,
1144                                        y_offset, &x_new, &y_new) == FALSE)
1145                 return NULL;
1146
1147         link_mapping = ev_pixbuf_cache_get_link_mapping (view->pixbuf_cache, page);
1148
1149         if (link_mapping)
1150                 return ev_mapping_list_get_data (link_mapping, x_new, y_new);
1151         else
1152                 return NULL;
1153 }
1154
1155 static void
1156 goto_fitr_dest (EvView *view, EvLinkDest *dest)
1157 {
1158         EvPoint doc_point;
1159         gdouble zoom, left, top;
1160         gboolean change_left, change_top;
1161
1162         left = ev_link_dest_get_left (dest, &change_left);
1163         top = ev_link_dest_get_top (dest, &change_top);
1164
1165         zoom = zoom_for_size_best_fit (ev_link_dest_get_right (dest) - left,
1166                                        ev_link_dest_get_bottom (dest) - top,
1167                                        ev_view_get_width (view),
1168                                        ev_view_get_height (view), 0, 0);
1169
1170         ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1171         ev_view_set_zoom (view, zoom, FALSE);
1172
1173         doc_point.x = change_left ? left : 0;
1174         doc_point.y = change_top ? top : 0;
1175
1176         view->current_page = ev_link_dest_get_page (dest);
1177         if (change_left || change_top)
1178                 view->pending_point = doc_point;
1179         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1180
1181         gtk_widget_queue_resize (GTK_WIDGET (view));
1182 }
1183
1184 static void
1185 goto_fitv_dest (EvView *view, EvLinkDest *dest)
1186 {
1187         EvPoint doc_point;
1188         int doc_width, doc_height, page;
1189         double zoom, left;
1190         gboolean change_left;
1191
1192         page = ev_link_dest_get_page (dest);
1193         ev_page_cache_get_size (view->page_cache, page, 0, 1.0, &doc_width, &doc_height);
1194
1195         left = ev_link_dest_get_left (dest, &change_left);
1196         doc_point.x = change_left ? left : 0;
1197         doc_point.y = 0;
1198
1199         zoom = zoom_for_size_fit_height (doc_width - doc_point.x , doc_height,
1200                                          ev_view_get_width (view),
1201                                          ev_view_get_height (view), 0);
1202
1203         ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1204         ev_view_set_zoom (view, zoom, FALSE);
1205
1206         view->current_page = page;
1207         if (change_left)
1208                 view->pending_point = doc_point;
1209         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1210
1211         gtk_widget_queue_resize (GTK_WIDGET (view));
1212 }
1213
1214 static void
1215 goto_fith_dest (EvView *view, EvLinkDest *dest)
1216 {
1217         EvPoint doc_point;
1218         int doc_width, doc_height, page;
1219         gdouble zoom, top;
1220         gboolean change_top;
1221
1222         page = ev_link_dest_get_page (dest);
1223         ev_page_cache_get_size (view->page_cache, page, 0, 1.0, &doc_width, &doc_height);
1224
1225         top = ev_link_dest_get_top (dest, &change_top);
1226
1227         doc_point.x = 0;
1228         doc_point.y = change_top ? top : 0;
1229
1230         zoom = zoom_for_size_fit_width (doc_width, top,
1231                                         ev_view_get_width (view),
1232                                         ev_view_get_height (view), 0);
1233
1234         ev_view_set_sizing_mode (view, EV_SIZING_FIT_WIDTH);
1235         ev_view_set_zoom (view, zoom, FALSE);
1236
1237         view->current_page = page;
1238         if (change_top)
1239                 view->pending_point = doc_point;
1240         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1241
1242         gtk_widget_queue_resize (GTK_WIDGET (view));
1243 }
1244
1245 static void
1246 goto_fit_dest (EvView *view, EvLinkDest *dest)
1247 {
1248         double zoom;
1249         int doc_width, doc_height;
1250         int page;
1251
1252         page = ev_link_dest_get_page (dest);
1253         ev_page_cache_get_size (view->page_cache, page, 0, 1.0, &doc_width, &doc_height);
1254
1255         zoom = zoom_for_size_best_fit (doc_width, doc_height, ev_view_get_width (view),
1256                                        ev_view_get_height (view), 0, 0);
1257
1258         ev_view_set_sizing_mode (view, EV_SIZING_BEST_FIT);
1259         ev_view_set_zoom (view, zoom, FALSE);
1260
1261         view->current_page = page;
1262         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1263
1264         gtk_widget_queue_resize (GTK_WIDGET (view));
1265 }
1266
1267 static void
1268 goto_xyz_dest (EvView *view, EvLinkDest *dest)
1269 {
1270         EvPoint doc_point;
1271         gint page;
1272         gdouble zoom, left, top;
1273         gboolean change_zoom, change_left, change_top;
1274
1275         zoom = ev_link_dest_get_zoom (dest, &change_zoom);
1276         page = ev_link_dest_get_page (dest);
1277
1278         if (change_zoom && zoom > 1) {
1279                 ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1280                 ev_view_set_zoom (view, zoom, FALSE);
1281         }
1282
1283         left = ev_link_dest_get_left (dest, &change_left);
1284         top = ev_link_dest_get_top (dest, &change_top);
1285
1286         doc_point.x = change_left ? left : 0;
1287         doc_point.y = change_top ? top : 0;
1288
1289         view->current_page = page;
1290         if (change_left || change_top)
1291                 view->pending_point = doc_point;
1292         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1293
1294         gtk_widget_queue_resize (GTK_WIDGET (view));
1295 }
1296
1297 static void
1298 goto_dest (EvView *view, EvLinkDest *dest)
1299 {
1300         EvLinkDestType type;
1301         int page, n_pages, current_page;
1302
1303         page = ev_link_dest_get_page (dest);
1304         n_pages = ev_page_cache_get_n_pages (view->page_cache);
1305
1306         if (page < 0 || page >= n_pages)
1307                 return;
1308
1309         current_page = view->current_page;
1310
1311         type = ev_link_dest_get_dest_type (dest);
1312
1313         switch (type) {
1314                 case EV_LINK_DEST_TYPE_PAGE:
1315                         ev_page_cache_set_current_page (view->page_cache, page);
1316                         break;
1317                 case EV_LINK_DEST_TYPE_FIT:
1318                         goto_fit_dest (view, dest);
1319                         break;
1320                 case EV_LINK_DEST_TYPE_FITH:
1321                         goto_fith_dest (view, dest);
1322                         break;
1323                 case EV_LINK_DEST_TYPE_FITV:
1324                         goto_fitv_dest (view, dest);
1325                         break;
1326                 case EV_LINK_DEST_TYPE_FITR:
1327                         goto_fitr_dest (view, dest);
1328                         break;
1329                 case EV_LINK_DEST_TYPE_XYZ:
1330                         goto_xyz_dest (view, dest);
1331                         break;
1332                 case EV_LINK_DEST_TYPE_PAGE_LABEL:
1333                         ev_page_cache_set_page_label (view->page_cache, ev_link_dest_get_page_label (dest));
1334                         break;
1335                 default:
1336                         g_assert_not_reached ();
1337         }
1338
1339         if (current_page != view->current_page)
1340                 ev_page_cache_set_current_page (view->page_cache,
1341                                                 view->current_page);
1342 }
1343
1344 static void
1345 ev_view_goto_dest (EvView *view, EvLinkDest *dest)
1346 {
1347         EvLinkDestType type;
1348
1349         type = ev_link_dest_get_dest_type (dest);
1350
1351         if (type == EV_LINK_DEST_TYPE_NAMED) {
1352                 EvLinkDest  *dest2;
1353                 const gchar *named_dest;
1354
1355                 named_dest = ev_link_dest_get_named_dest (dest);
1356                 dest2 = ev_document_links_find_link_dest (EV_DOCUMENT_LINKS (view->document),
1357                                                           named_dest);
1358                 if (dest2) {
1359                         goto_dest (view, dest2);
1360                         g_object_unref (dest2);
1361                 }
1362
1363                 return;
1364         }
1365
1366         goto_dest (view, dest);
1367 }
1368
1369 void
1370 ev_view_handle_link (EvView *view, EvLink *link)
1371 {
1372         EvLinkAction    *action = NULL;
1373         EvLinkActionType type;
1374
1375         action = ev_link_get_action (link);
1376         if (!action)
1377                 return;
1378
1379         type = ev_link_action_get_action_type (action);
1380
1381         switch (type) {
1382                 case EV_LINK_ACTION_TYPE_GOTO_DEST: {
1383                         EvLinkDest *dest;
1384
1385                         g_signal_emit (view, signals[SIGNAL_HANDLE_LINK], 0, link);
1386
1387                         dest = ev_link_action_get_dest (action);
1388                         ev_view_goto_dest (view, dest);
1389                 }
1390                         break;
1391                 case EV_LINK_ACTION_TYPE_GOTO_REMOTE:
1392                 case EV_LINK_ACTION_TYPE_EXTERNAL_URI:
1393                 case EV_LINK_ACTION_TYPE_LAUNCH:
1394                 case EV_LINK_ACTION_TYPE_NAMED:
1395                         g_signal_emit (view, signals[SIGNAL_EXTERNAL_LINK], 0, action);
1396                         break;
1397         }
1398 }
1399
1400 gchar *
1401 ev_view_page_label_from_dest (EvView *view, EvLinkDest *dest)
1402 {
1403         EvLinkDestType type;
1404         gchar *msg = NULL;
1405
1406         type = ev_link_dest_get_dest_type (dest);
1407
1408         switch (type) {
1409                 case EV_LINK_DEST_TYPE_NAMED: {
1410                         EvLinkDest  *dest2;
1411                         const gchar *named_dest;
1412
1413                         named_dest = ev_link_dest_get_named_dest (dest);
1414                         dest2 = ev_document_links_find_link_dest (EV_DOCUMENT_LINKS (view->document),
1415                                                                   named_dest);
1416                         if (dest2) {
1417                                 msg = ev_page_cache_get_page_label (view->page_cache,
1418                                                                     ev_link_dest_get_page (dest2));
1419                                 g_object_unref (dest2);
1420                         }
1421                 }
1422
1423                         break;
1424                 case EV_LINK_DEST_TYPE_PAGE_LABEL: {
1425                         msg = g_strdup (ev_link_dest_get_page_label (dest));
1426                 }
1427                         break;
1428                 default:
1429                         msg = ev_page_cache_get_page_label (view->page_cache,
1430                                                             ev_link_dest_get_page (dest));
1431         }
1432
1433         return msg;
1434 }
1435
1436 static char *
1437 tip_from_action_named (EvLinkAction *action)
1438 {
1439         const gchar *name = ev_link_action_get_name (action);
1440
1441         if (g_ascii_strcasecmp (name, "FirstPage") == 0) {
1442                 return g_strdup (_("Go to first page"));
1443         } else if (g_ascii_strcasecmp (name, "PrevPage") == 0) {
1444                 return g_strdup (_("Go to previous page"));
1445         } else if (g_ascii_strcasecmp (name, "NextPage") == 0) {
1446                 return g_strdup (_("Go to next page"));
1447         } else if (g_ascii_strcasecmp (name, "LastPage") == 0) {
1448                 return g_strdup (_("Go to last page"));
1449         } else if (g_ascii_strcasecmp (name, "GoToPage") == 0) {
1450                 return g_strdup (_("Go to page"));
1451         } else if (g_ascii_strcasecmp (name, "Find") == 0) {
1452                 return g_strdup (_("Find"));
1453         }
1454
1455         return NULL;
1456 }
1457
1458 static char *
1459 tip_from_link (EvView *view, EvLink *link)
1460 {
1461         EvLinkAction *action;
1462         EvLinkActionType type;
1463         char *msg = NULL;
1464         char *page_label;
1465         const char *title;
1466
1467         action = ev_link_get_action (link);
1468         title = ev_link_get_title (link);
1469
1470         if (!action)
1471                 return title ? g_strdup (title) : NULL;
1472
1473         type = ev_link_action_get_action_type (action);
1474
1475         switch (type) {
1476                 case EV_LINK_ACTION_TYPE_GOTO_DEST:
1477                         page_label = ev_view_page_label_from_dest (view,
1478                                                                    ev_link_action_get_dest (action));
1479                         if (page_label) {
1480                                 msg = g_strdup_printf (_("Go to page %s"), page_label);
1481                                 g_free (page_label);
1482                         }
1483                         break;
1484                 case EV_LINK_ACTION_TYPE_GOTO_REMOTE:
1485                         if (title) {
1486                                 msg = g_strdup_printf (_("Go to %s on file “%s”"), title,
1487                                                        ev_link_action_get_filename (action));
1488                         } else {
1489                                 msg = g_strdup_printf (_("Go to file “%s”"),
1490                                                        ev_link_action_get_filename (action));
1491                         }
1492                         break;
1493                 case EV_LINK_ACTION_TYPE_EXTERNAL_URI:
1494                         msg = g_strdup (ev_link_action_get_uri (action));
1495                         break;
1496                 case EV_LINK_ACTION_TYPE_LAUNCH:
1497                         msg = g_strdup_printf (_("Launch %s"),
1498                                                ev_link_action_get_filename (action));
1499                         break;
1500                 case EV_LINK_ACTION_TYPE_NAMED:
1501                         msg = tip_from_action_named (action);
1502                         break;
1503                 default:
1504                         if (title)
1505                                 msg = g_strdup (title);
1506                         break;
1507         }
1508
1509         return msg;
1510 }
1511
1512 static void
1513 ev_view_handle_cursor_over_xy (EvView *view, gint x, gint y)
1514 {
1515         EvLink       *link;
1516         EvFormField  *field;
1517         EvAnnotation *annot = NULL;
1518
1519         if (view->cursor == EV_VIEW_CURSOR_HIDDEN)
1520                 return;
1521
1522         if (view->drag_info.in_drag) {
1523                 if (view->cursor != EV_VIEW_CURSOR_DRAG)
1524                         ev_view_set_cursor (view, EV_VIEW_CURSOR_DRAG);
1525                 return;
1526         }
1527
1528         if (view->scroll_info.autoscrolling) {
1529                 if (view->cursor != EV_VIEW_CURSOR_AUTOSCROLL)
1530                         ev_view_set_cursor (view, EV_VIEW_CURSOR_AUTOSCROLL);
1531                 return;
1532         }
1533
1534         link = ev_view_get_link_at_location (view, x, y);
1535         if (link) {
1536                 ev_view_set_cursor (view, EV_VIEW_CURSOR_LINK);
1537         } else if ((field = ev_view_get_form_field_at_location (view, x, y))) {
1538                 if (field->is_read_only) {
1539                         if (view->cursor == EV_VIEW_CURSOR_LINK ||
1540                             view->cursor == EV_VIEW_CURSOR_IBEAM ||
1541                             view->cursor == EV_VIEW_CURSOR_DRAG)
1542                                 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
1543                 } else if (EV_IS_FORM_FIELD_TEXT (field)) {
1544                         ev_view_set_cursor (view, EV_VIEW_CURSOR_IBEAM);
1545                 } else {
1546                         ev_view_set_cursor (view, EV_VIEW_CURSOR_LINK);
1547                 }
1548         } else if ((annot = ev_view_get_annotation_at_location (view, x, y))) {
1549                 ev_view_set_cursor (view, EV_VIEW_CURSOR_LINK);
1550         } else if (location_in_text (view, x + view->scroll_x, y + view->scroll_y)) {
1551                 ev_view_set_cursor (view, EV_VIEW_CURSOR_IBEAM);
1552         } else {
1553                 if (view->cursor == EV_VIEW_CURSOR_LINK ||
1554                     view->cursor == EV_VIEW_CURSOR_IBEAM ||
1555                     view->cursor == EV_VIEW_CURSOR_DRAG ||
1556                     view->cursor == EV_VIEW_CURSOR_AUTOSCROLL)
1557                         ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
1558         }
1559
1560         if (link || annot)
1561                 g_object_set (view, "has-tooltip", TRUE, NULL);
1562 }
1563
1564 /*** Images ***/
1565 static EvImage *
1566 ev_view_get_image_at_location (EvView  *view,
1567                                gdouble  x,
1568                                gdouble  y)
1569 {
1570         gint page = -1;
1571         gint x_offset = 0, y_offset = 0;
1572         gint x_new = 0, y_new = 0;
1573         GList *image_mapping;
1574
1575         if (!EV_IS_DOCUMENT_IMAGES (view->document))
1576                 return NULL;
1577
1578         x += view->scroll_x;
1579         y += view->scroll_y;
1580
1581         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1582
1583         if (page == -1)
1584                 return NULL;
1585
1586         if (get_doc_point_from_offset (view, page, x_offset,
1587                                        y_offset, &x_new, &y_new) == FALSE)
1588                 return NULL;
1589
1590         image_mapping = ev_pixbuf_cache_get_image_mapping (view->pixbuf_cache, page);
1591
1592         if (image_mapping)
1593                 return ev_mapping_list_get_data (image_mapping, x_new, y_new);
1594         else
1595                 return NULL;
1596 }
1597
1598 /*** Forms ***/
1599 static EvFormField *
1600 ev_view_get_form_field_at_location (EvView  *view,
1601                                     gdouble  x,
1602                                     gdouble  y)
1603 {
1604         gint page = -1;
1605         gint x_offset = 0, y_offset = 0;
1606         gint x_new = 0, y_new = 0;
1607         GList *forms_mapping;
1608
1609         if (!EV_IS_DOCUMENT_FORMS (view->document))
1610                 return NULL;
1611
1612         x += view->scroll_x;
1613         y += view->scroll_y;
1614
1615         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1616
1617         if (page == -1)
1618                 return NULL;
1619
1620         if (get_doc_point_from_offset (view, page, x_offset,
1621                                        y_offset, &x_new, &y_new) == FALSE)
1622                 return NULL;
1623
1624         forms_mapping = ev_pixbuf_cache_get_form_field_mapping (view->pixbuf_cache, page);
1625
1626         if (forms_mapping)
1627                 return ev_mapping_list_get_data (forms_mapping, x_new, y_new);
1628         else
1629                 return NULL;
1630 }
1631
1632 static GdkRegion *
1633 ev_view_form_field_get_region (EvView      *view,
1634                                EvFormField *field)
1635 {
1636         GdkRectangle view_area;
1637         GList       *forms_mapping;
1638         EvMapping   *mapping;
1639
1640         forms_mapping = ev_pixbuf_cache_get_form_field_mapping (view->pixbuf_cache,
1641                                                                 field->page->index);
1642         mapping = ev_mapping_list_find (forms_mapping, field);
1643         doc_rect_to_view_rect (view, field->page->index, &mapping->area, &view_area);
1644         view_area.x -= view->scroll_x;
1645         view_area.y -= view->scroll_y;
1646
1647         return gdk_region_rectangle (&view_area);
1648 }
1649
1650 static gboolean
1651 ev_view_forms_remove_widgets (EvView *view)
1652 {
1653         ev_view_remove_all (view);
1654
1655         return FALSE;
1656 }
1657
1658 static void
1659 ev_view_form_field_destroy (GtkWidget *widget,
1660                             EvView    *view)
1661 {
1662         g_idle_add ((GSourceFunc)ev_view_forms_remove_widgets, view);
1663 }
1664
1665 static GtkWidget *
1666 ev_view_form_field_button_create_widget (EvView      *view,
1667                                          EvFormField *field)
1668 {
1669         EvFormFieldButton *field_button = EV_FORM_FIELD_BUTTON (field);
1670         GdkRegion         *field_region = NULL;
1671
1672         switch (field_button->type) {
1673                 case EV_FORM_FIELD_BUTTON_PUSH:
1674                         return NULL;
1675                 case EV_FORM_FIELD_BUTTON_CHECK:
1676                 case EV_FORM_FIELD_BUTTON_RADIO: {
1677                         gboolean  state;
1678                         GList    *forms_mapping, *l;
1679
1680                         state = ev_document_forms_form_field_button_get_state (EV_DOCUMENT_FORMS (view->document),
1681                                                                                field);
1682
1683                         /* FIXME: it actually depends on NoToggleToOff flags */
1684                         if (field_button->type == EV_FORM_FIELD_BUTTON_RADIO &&
1685                             state && field_button->state)
1686                                 return NULL;
1687
1688                         field_region = ev_view_form_field_get_region (view, field);
1689
1690                         /* For radio buttons and checkbox buttons that are in a set
1691                          * we need to update also the region for the current selected item
1692                          */
1693                         forms_mapping = ev_pixbuf_cache_get_form_field_mapping (view->pixbuf_cache,
1694                                                                                 field->page->index);
1695                         for (l = forms_mapping; l; l = g_list_next (l)) {
1696                                 EvFormField *button = ((EvMapping *)(l->data))->data;
1697                                 GdkRegion   *button_region;
1698
1699                                 if (button->id == field->id)
1700                                         continue;
1701
1702                                 /* FIXME: only buttons in the same group should be updated */
1703                                 if (!EV_IS_FORM_FIELD_BUTTON (button) ||
1704                                     EV_FORM_FIELD_BUTTON (button)->type != field_button->type ||
1705                                     EV_FORM_FIELD_BUTTON (button)->state != TRUE)
1706                                         continue;
1707
1708                                 button_region = ev_view_form_field_get_region (view, button);
1709                                 gdk_region_union (field_region, button_region);
1710                                 gdk_region_destroy (button_region);
1711                         }
1712
1713                         ev_document_forms_form_field_button_set_state (EV_DOCUMENT_FORMS (view->document),
1714                                                                        field, !state);
1715                         field_button->state = !state;
1716                 }
1717                         break;
1718         }
1719
1720         ev_view_reload_page (view, field->page->index, field_region);
1721         gdk_region_destroy (field_region);
1722
1723         return NULL;
1724 }
1725
1726 static void
1727 ev_view_form_field_text_save (EvView    *view,
1728                               GtkWidget *widget)
1729 {
1730         EvFormField *field;
1731
1732         if (!view->document)
1733                 return;
1734
1735         field = g_object_get_data (G_OBJECT (widget), "form-field");
1736
1737         if (field->changed) {
1738                 EvFormFieldText *field_text = EV_FORM_FIELD_TEXT (field);
1739                 GdkRegion       *field_region;
1740
1741                 field_region = ev_view_form_field_get_region (view, field);
1742
1743                 ev_document_forms_form_field_text_set_text (EV_DOCUMENT_FORMS (view->document),
1744                                                             field, field_text->text);
1745                 field->changed = FALSE;
1746                 ev_view_reload_page (view, field->page->index, field_region);
1747                 gdk_region_destroy (field_region);
1748         }
1749 }
1750
1751 static void
1752 ev_view_form_field_text_changed (GtkWidget   *widget,
1753                                  EvFormField *field)
1754 {
1755         EvFormFieldText *field_text = EV_FORM_FIELD_TEXT (field);
1756         gchar           *text = NULL;
1757
1758         if (GTK_IS_ENTRY (widget)) {
1759                 text = g_strdup (gtk_entry_get_text (GTK_ENTRY (widget)));
1760         } else if (GTK_IS_TEXT_BUFFER (widget)) {
1761                 GtkTextIter start, end;
1762
1763                 gtk_text_buffer_get_bounds (GTK_TEXT_BUFFER (widget), &start, &end);
1764                 text = gtk_text_buffer_get_text (GTK_TEXT_BUFFER (widget),
1765                                                  &start, &end, FALSE);
1766         }
1767
1768         if (!field_text->text ||
1769             (field_text->text && g_ascii_strcasecmp (field_text->text, text) != 0)) {
1770                 g_free (field_text->text);
1771                 field_text->text = text;
1772                 field->changed = TRUE;
1773         }
1774 }
1775
1776 static GtkWidget *
1777 ev_view_form_field_text_create_widget (EvView      *view,
1778                                        EvFormField *field)
1779 {
1780         EvFormFieldText *field_text = EV_FORM_FIELD_TEXT (field);
1781         GtkWidget       *text = NULL;
1782         gchar           *txt;
1783
1784         txt = ev_document_forms_form_field_text_get_text (EV_DOCUMENT_FORMS (view->document),
1785                                                           field);
1786
1787         switch (field_text->type) {
1788                 case EV_FORM_FIELD_TEXT_FILE_SELECT:
1789                         /* TODO */
1790                 case EV_FORM_FIELD_TEXT_NORMAL:
1791                         text = gtk_entry_new ();
1792                         gtk_entry_set_has_frame (GTK_ENTRY (text), FALSE);
1793                         gtk_entry_set_max_length (GTK_ENTRY (text), field_text->max_len);
1794                         gtk_entry_set_visibility (GTK_ENTRY (text), !field_text->is_password);
1795
1796                         if (txt) {
1797                                 gtk_entry_set_text (GTK_ENTRY (text), txt);
1798                                 g_free (txt);
1799                         }
1800
1801                         g_signal_connect (text, "changed",
1802                                           G_CALLBACK (ev_view_form_field_text_changed),
1803                                           field);
1804                         g_signal_connect_after (text, "activate",
1805                                                 G_CALLBACK (ev_view_form_field_destroy),
1806                                                 view);
1807                         break;
1808                 case EV_FORM_FIELD_TEXT_MULTILINE: {
1809                         GtkTextBuffer *buffer;
1810
1811                         text = gtk_text_view_new ();
1812                         buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (text));
1813
1814                         if (txt) {
1815                                 gtk_text_buffer_set_text (buffer, txt, -1);
1816                                 g_free (txt);
1817                         }
1818
1819                         g_signal_connect (buffer, "changed",
1820                                           G_CALLBACK (ev_view_form_field_text_changed),
1821                                           field);
1822                 }
1823                         break;
1824         }
1825
1826         g_object_weak_ref (G_OBJECT (text),
1827                            (GWeakNotify)ev_view_form_field_text_save,
1828                            view);
1829
1830         return text;
1831 }
1832
1833 static void
1834 ev_view_form_field_choice_save (EvView    *view,
1835                                 GtkWidget *widget)
1836 {
1837         EvFormField *field;
1838
1839         if (!view->document)
1840                 return;
1841
1842         field = g_object_get_data (G_OBJECT (widget), "form-field");
1843
1844         if (field->changed) {
1845                 GList             *l;
1846                 EvFormFieldChoice *field_choice = EV_FORM_FIELD_CHOICE (field);
1847                 GdkRegion         *field_region;
1848
1849                 field_region = ev_view_form_field_get_region (view, field);
1850
1851                 if (field_choice->is_editable) {
1852                         ev_document_forms_form_field_choice_set_text (EV_DOCUMENT_FORMS (view->document),
1853                                                                       field, field_choice->text);
1854                 } else {
1855                         ev_document_forms_form_field_choice_unselect_all (EV_DOCUMENT_FORMS (view->document), field);
1856                         for (l = field_choice->selected_items; l; l = g_list_next (l)) {
1857                                 ev_document_forms_form_field_choice_select_item (EV_DOCUMENT_FORMS (view->document),
1858                                                                                  field,
1859                                                                                  GPOINTER_TO_INT (l->data));
1860                         }
1861                 }
1862                 field->changed = FALSE;
1863                 ev_view_reload_page (view, field->page->index, field_region);
1864                 gdk_region_destroy (field_region);
1865         }
1866 }
1867
1868 static void
1869 ev_view_form_field_choice_changed (GtkWidget   *widget,
1870                                    EvFormField *field)
1871 {
1872         EvFormFieldChoice *field_choice = EV_FORM_FIELD_CHOICE (field);
1873
1874         if (GTK_IS_COMBO_BOX (widget)) {
1875                 gint item;
1876
1877                 item = gtk_combo_box_get_active (GTK_COMBO_BOX (widget));
1878                 if (!field_choice->selected_items ||
1879                     GPOINTER_TO_INT (field_choice->selected_items->data) != item) {
1880                         g_list_free (field_choice->selected_items);
1881                         field_choice->selected_items = NULL;
1882                         field_choice->selected_items = g_list_prepend (field_choice->selected_items,
1883                                                                        GINT_TO_POINTER (item));
1884                         field->changed = TRUE;
1885                 }
1886
1887                 if (GTK_IS_COMBO_BOX_ENTRY (widget)) {
1888                         gchar *text;
1889
1890                         text = gtk_combo_box_get_active_text (GTK_COMBO_BOX (widget));
1891                         if (!field_choice->text ||
1892                             (field_choice->text && g_ascii_strcasecmp (field_choice->text, text) != 0)) {
1893                                 g_free (field_choice->text);
1894                                 field_choice->text = text;
1895                                 field->changed = TRUE;
1896                         }
1897                 }
1898         } else if (GTK_IS_TREE_SELECTION (widget)) {
1899                 GtkTreeSelection *selection = GTK_TREE_SELECTION (widget);
1900                 GtkTreeModel     *model;
1901                 GList            *items, *l;
1902
1903                 items = gtk_tree_selection_get_selected_rows (selection, &model);
1904                 g_list_free (field_choice->selected_items);
1905                 field_choice->selected_items = NULL;
1906
1907                 for (l = items; l && l->data; l = g_list_next (l)) {
1908                         GtkTreeIter  iter;
1909                         GtkTreePath *path = (GtkTreePath *)l->data;
1910                         gint         item;
1911
1912                         gtk_tree_model_get_iter (model, &iter, path);
1913                         gtk_tree_model_get (model, &iter, 1, &item, -1);
1914
1915                         field_choice->selected_items = g_list_prepend (field_choice->selected_items,
1916                                                                        GINT_TO_POINTER (item));
1917
1918                         gtk_tree_path_free (path);
1919                 }
1920
1921                 g_list_free (items);
1922
1923                 field->changed = TRUE;
1924         }
1925 }
1926
1927 static GtkWidget *
1928 ev_view_form_field_choice_create_widget (EvView      *view,
1929                                          EvFormField *field)
1930 {
1931         EvFormFieldChoice *field_choice = EV_FORM_FIELD_CHOICE (field);
1932         GtkWidget         *choice;
1933         GtkTreeModel      *model;
1934         gint               n_items, i;
1935         gint               selected_item = 0;
1936
1937         n_items = ev_document_forms_form_field_choice_get_n_items (EV_DOCUMENT_FORMS (view->document),
1938                                                                    field);
1939         model = GTK_TREE_MODEL (gtk_list_store_new (2, G_TYPE_STRING, G_TYPE_INT));
1940         for (i = 0; i < n_items; i++) {
1941                 GtkTreeIter iter;
1942                 gchar      *item;
1943
1944                 item = ev_document_forms_form_field_choice_get_item (EV_DOCUMENT_FORMS (view->document),
1945                                                                      field, i);
1946                 if (ev_document_forms_form_field_choice_is_item_selected (
1947                             EV_DOCUMENT_FORMS (view->document), field, i)) {
1948                         selected_item = i;
1949                         /* FIXME: we need a get_selected_items function in poppler */
1950                         field_choice->selected_items = g_list_prepend (field_choice->selected_items,
1951                                                                        GINT_TO_POINTER (i));
1952                 }
1953
1954                 if (item) {
1955                         gtk_list_store_append (GTK_LIST_STORE (model), &iter);
1956                         gtk_list_store_set (GTK_LIST_STORE (model), &iter,
1957                                             0, item,
1958                                             1, i,
1959                                             -1);
1960                         g_free (item);
1961                 }
1962         }
1963
1964         if (field_choice->type == EV_FORM_FIELD_CHOICE_LIST) {
1965                 GtkCellRenderer  *renderer;
1966                 GtkWidget        *tree_view;
1967                 GtkTreeSelection *selection;
1968
1969                 tree_view = gtk_tree_view_new_with_model (model);
1970                 gtk_tree_view_set_headers_visible (GTK_TREE_VIEW (tree_view), FALSE);
1971
1972                 selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (tree_view));
1973                 if (field_choice->multi_select) {
1974                         gtk_tree_selection_set_mode (selection, GTK_SELECTION_MULTIPLE);
1975                 }
1976
1977                 /* TODO: set selected items */
1978
1979                 renderer = gtk_cell_renderer_text_new ();
1980                 gtk_tree_view_insert_column_with_attributes (GTK_TREE_VIEW (tree_view),
1981                                                              0,
1982                                                              "choix", renderer,
1983                                                              "text", 0,
1984                                                              NULL);
1985
1986                 choice = gtk_scrolled_window_new (NULL, NULL);
1987                 gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (choice),
1988                                                 GTK_POLICY_AUTOMATIC,
1989                                                 GTK_POLICY_AUTOMATIC);
1990                 gtk_container_add (GTK_CONTAINER (choice), tree_view);
1991                 gtk_widget_show (tree_view);
1992
1993                 g_signal_connect (selection, "changed",
1994                                   G_CALLBACK (ev_view_form_field_choice_changed),
1995                                   field);
1996                 g_signal_connect_after (selection, "changed",
1997                                         G_CALLBACK (ev_view_form_field_destroy),
1998                                         view);
1999         } else if (field_choice->is_editable) { /* ComboBoxEntry */
2000                 gchar *text;
2001
2002                 choice = gtk_combo_box_entry_new_with_model (model, 0);
2003                 text = ev_document_forms_form_field_choice_get_text (EV_DOCUMENT_FORMS (view->document), field);
2004                 if (text) {
2005                         gtk_entry_set_text (GTK_ENTRY (gtk_bin_get_child (GTK_BIN (choice))), text);
2006                         g_free (text);
2007                 }
2008
2009                 g_signal_connect (choice, "changed",
2010                                   G_CALLBACK (ev_view_form_field_choice_changed),
2011                                   field);
2012                 g_signal_connect_after (GTK_BIN(choice)->child, "activate",
2013                                         G_CALLBACK (ev_view_form_field_destroy),
2014                                         view);
2015         } else { /* ComboBoxText */
2016                 GtkCellRenderer *renderer;
2017
2018                 choice = gtk_combo_box_new_with_model (model);
2019                 renderer = gtk_cell_renderer_text_new ();
2020                 gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (choice),
2021                                             renderer, TRUE);
2022                 gtk_cell_layout_set_attributes (GTK_CELL_LAYOUT (choice),
2023                                                 renderer,
2024                                                 "text", 0,
2025                                                 NULL);
2026                 gtk_combo_box_set_active (GTK_COMBO_BOX (choice), selected_item);
2027                 gtk_combo_box_popup (GTK_COMBO_BOX (choice));
2028
2029                 g_signal_connect (choice, "changed",
2030                                   G_CALLBACK (ev_view_form_field_choice_changed),
2031                                   field);
2032                 g_signal_connect_after (choice, "changed",
2033                                         G_CALLBACK (ev_view_form_field_destroy),
2034                                         view);
2035         }
2036
2037         g_object_unref (model);
2038
2039         g_object_weak_ref (G_OBJECT (choice),
2040                            (GWeakNotify)ev_view_form_field_choice_save,
2041                            view);
2042
2043         return choice;
2044 }
2045
2046 static void
2047 ev_view_handle_form_field (EvView      *view,
2048                            EvFormField *field,
2049                            gdouble      x,
2050                            gdouble      y)
2051 {
2052         GtkWidget   *field_widget = NULL;
2053         GList       *form_field_mapping;
2054         EvMapping   *mapping;
2055         GdkRectangle view_area;
2056
2057         if (field->is_read_only)
2058                 return;
2059
2060         if (EV_IS_FORM_FIELD_BUTTON (field)) {
2061                 field_widget = ev_view_form_field_button_create_widget (view, field);
2062         } else if (EV_IS_FORM_FIELD_TEXT (field)) {
2063                 field_widget = ev_view_form_field_text_create_widget (view, field);
2064         } else if (EV_IS_FORM_FIELD_CHOICE (field)) {
2065                 field_widget = ev_view_form_field_choice_create_widget (view, field);
2066         } else if (EV_IS_FORM_FIELD_SIGNATURE (field)) {
2067                 /* TODO */
2068         }
2069
2070         /* Form field doesn't require a widget */
2071         if (!field_widget)
2072                 return;
2073
2074         g_object_set_data_full (G_OBJECT (field_widget), "form-field",
2075                                 g_object_ref (field),
2076                                 (GDestroyNotify)g_object_unref);
2077
2078         form_field_mapping = ev_pixbuf_cache_get_form_field_mapping (view->pixbuf_cache, field->page->index);
2079         mapping = ev_mapping_list_find (form_field_mapping, field);
2080
2081         doc_rect_to_view_rect (view, field->page->index, &mapping->area, &view_area);
2082         view_area.x -= view->scroll_x;
2083         view_area.y -= view->scroll_y;
2084
2085         gtk_layout_put (GTK_LAYOUT (view), field_widget, view_area.x, view_area.y);
2086         gtk_widget_show (field_widget);
2087         gtk_widget_grab_focus (field_widget);
2088 }
2089
2090 /* Annotations */
2091 static EvViewWindowChild *
2092 ev_view_get_window_child (EvView    *view,
2093                           GtkWidget *window)
2094 {
2095         GList *children = view->window_children;
2096
2097         while (children) {
2098                 EvViewWindowChild *child;
2099
2100                 child = (EvViewWindowChild *)children->data;
2101                 children = children->next;
2102
2103                 if (child->window == window)
2104                         return child;
2105         }
2106
2107         return NULL;
2108 }
2109
2110 static void
2111 ev_view_window_child_move (EvView            *view,
2112                            EvViewWindowChild *child,
2113                            gint               x,
2114                            gint               y)
2115 {
2116         child->x = x;
2117         child->y = y;
2118         gtk_window_move (GTK_WINDOW (child->window),
2119                          MAX (child->parent_x, x),
2120                          MAX (child->parent_y, y));
2121 }
2122
2123 static void
2124 ev_view_window_child_move_with_parent (EvView    *view,
2125                                        GtkWidget *window)
2126 {
2127         EvViewWindowChild *child;
2128         gint               root_x, root_y;
2129
2130         child = ev_view_get_window_child (view, window);
2131         gdk_window_get_origin (gtk_widget_get_window (GTK_WIDGET (view)),
2132                                &root_x, &root_y);
2133         if (root_x != child->parent_x || root_y != child->parent_y) {
2134                 gint dest_x, dest_y;
2135
2136                 dest_x = child->x + (root_x - child->parent_x);
2137                 dest_y = child->y + (root_y - child->parent_y);
2138                 child->parent_x = root_x;
2139                 child->parent_y = root_y;
2140                 ev_view_window_child_move (view, child, dest_x, dest_y);
2141         }
2142
2143         if (child->visible && !GTK_WIDGET_VISIBLE (window))
2144                 gtk_widget_show (window);
2145 }
2146
2147 static void
2148 ev_view_window_child_put (EvView    *view,
2149                           GtkWidget *window,
2150                           guint      page,
2151                           gint       x,
2152                           gint       y,
2153                           gdouble    orig_x,
2154                           gdouble    orig_y)
2155 {
2156         EvViewWindowChild *child;
2157         gint               root_x, root_y;
2158
2159         gdk_window_get_origin (gtk_widget_get_window (GTK_WIDGET (view)),
2160                                &root_x, &root_y);
2161
2162         child = g_new0 (EvViewWindowChild, 1);
2163         child->window = window;
2164         child->page = page;
2165         child->orig_x = orig_x;
2166         child->orig_y = orig_y;
2167         child->parent_x = root_x;
2168         child->parent_y = root_y;
2169         child->visible = ev_annotation_window_is_open (EV_ANNOTATION_WINDOW (window));
2170         ev_view_window_child_move (view, child, x + root_x, y + root_y);
2171
2172         if (child->visible)
2173                 gtk_widget_show (window);
2174         else
2175                 gtk_widget_hide (window);
2176
2177         view->window_children = g_list_append (view->window_children, child);
2178 }
2179
2180 static EvViewWindowChild *
2181 ev_view_find_window_child_for_annot (EvView       *view,
2182                                      guint         page,
2183                                      EvAnnotation *annot)
2184 {
2185         GList *children = view->window_children;
2186
2187         while (children) {
2188                 EvViewWindowChild *child;
2189                 EvAnnotation      *wannot;
2190
2191                 child = (EvViewWindowChild *)children->data;
2192                 children = children->next;
2193
2194                 if (child->page != page)
2195                         continue;
2196
2197                 wannot = ev_annotation_window_get_annotation (EV_ANNOTATION_WINDOW (child->window));
2198                 if (wannot == annot || strcmp (wannot->name, annot->name) == 0)
2199                         return child;
2200         }
2201
2202         return NULL;
2203 }
2204
2205 static void
2206 ev_view_window_children_free (EvView *view)
2207 {
2208         GList *l;
2209
2210         if (!view->window_children)
2211                 return;
2212
2213         for (l = view->window_children; l && l->data; l = g_list_next (l)) {
2214                 EvViewWindowChild *child;
2215
2216                 child = (EvViewWindowChild *)l->data;
2217                 gtk_widget_destroy (GTK_WIDGET (child->window));
2218                 g_free (child);
2219         }
2220         g_list_free (view->window_children);
2221         view->window_children = NULL;
2222         view->window_child_focus = NULL;
2223 }
2224
2225 static void
2226 annotation_window_grab_focus (GtkWidget *widget,
2227                               EvView    *view)
2228 {
2229         if (view->window_child_focus)
2230                 ev_annotation_window_ungrab_focus (EV_ANNOTATION_WINDOW (view->window_child_focus->window));
2231         view->window_child_focus = ev_view_get_window_child (view, widget);
2232 }
2233
2234 static void
2235 annotation_window_closed (EvAnnotationWindow *window,
2236                           EvView             *view)
2237 {
2238         EvViewWindowChild *child;
2239
2240         child = ev_view_get_window_child (view, GTK_WIDGET (window));
2241         child->visible = FALSE;
2242 }
2243
2244 static void
2245 annotation_window_moved (EvAnnotationWindow *window,
2246                          gint                x,
2247                          gint                y,
2248                          EvView             *view)
2249 {
2250         EvViewWindowChild *child;
2251         GdkRectangle       page_area;
2252         GtkBorder          border;
2253         GdkRectangle       view_rect;
2254         EvRectangle        doc_rect;
2255         gint               width, height;
2256
2257         child = ev_view_get_window_child (view, GTK_WIDGET (window));
2258         if (child->x == x && child->y == y)
2259                 return;
2260
2261         child->moved = TRUE;
2262         child->x = x;
2263         child->y = y;
2264
2265         /* Window has been moved by the user,
2266          * we have to set a new origin in doc coords
2267          */
2268         gtk_window_get_size (GTK_WINDOW (window), &width, &height);
2269         view_rect.x = (x - child->parent_x) + view->scroll_x;
2270         view_rect.y = (y - child->parent_y) + view->scroll_y;
2271         view_rect.width = width;
2272         view_rect.height = height;
2273
2274         get_page_extents (view, child->page, &page_area, &border);
2275         view_rect_to_doc_rect (view, &view_rect, &page_area, &doc_rect);
2276         child->orig_x = doc_rect.x1;
2277         child->orig_y = doc_rect.y1;
2278 }
2279
2280 static void
2281 ev_view_annotation_save (EvView       *view,
2282                          EvAnnotation *annot)
2283 {
2284         if (!view->document)
2285                 return;
2286
2287         if (!annot->changed)
2288                 return;
2289
2290         ev_document_annotations_annotation_set_contents (EV_DOCUMENT_ANNOTATIONS (view->document),
2291                                                          annot, annot->contents);
2292         annot->changed = FALSE;
2293 }
2294
2295 static void
2296 show_annotation_windows (EvView *view,
2297                          gint    page)
2298 {
2299         GList     *annots, *l;
2300         GtkWindow *parent;
2301
2302         parent = GTK_WINDOW (gtk_widget_get_toplevel (GTK_WIDGET (view)));
2303
2304         annots = ev_pixbuf_cache_get_annots_mapping (view->pixbuf_cache, page);
2305
2306         for (l = annots; l && l->data; l = g_list_next (l)) {
2307                 EvAnnotation      *annot;
2308                 EvViewWindowChild *child;
2309                 GtkWidget         *window;
2310                 EvRectangle       *doc_rect;
2311                 GdkRectangle       view_rect;
2312
2313                 annot = ((EvMapping *)(l->data))->data;
2314
2315                 if (!EV_IS_ANNOTATION_MARKUP (annot))
2316                         continue;
2317
2318                 window = g_object_get_data (G_OBJECT (annot), "popup");
2319                 if (window) {
2320                         ev_view_window_child_move_with_parent (view, window);
2321                         continue;
2322                 }
2323
2324                 /* Look if we already have a popup for this annot */
2325                 child = ev_view_find_window_child_for_annot (view, page, annot);
2326                 window = child ? child->window : NULL;
2327                 if (window) {
2328                         ev_annotation_window_set_annotation (EV_ANNOTATION_WINDOW (window), annot);
2329                         g_object_set_data (G_OBJECT (annot), "popup", window);
2330                         ev_view_window_child_move_with_parent (view, window);
2331                 } else {
2332                         window = ev_annotation_window_new (annot, parent);
2333                         g_signal_connect (window, "grab_focus",
2334                                           G_CALLBACK (annotation_window_grab_focus),
2335                                           view);
2336                         g_signal_connect (window, "closed",
2337                                           G_CALLBACK (annotation_window_closed),
2338                                           view);
2339                         g_signal_connect (window, "moved",
2340                                           G_CALLBACK (annotation_window_moved),
2341                                           view);
2342                         g_object_set_data (G_OBJECT (annot), "popup", window);
2343
2344                         doc_rect = (EvRectangle *)ev_annotation_window_get_rectangle (EV_ANNOTATION_WINDOW (window));
2345                         doc_rect_to_view_rect (view, page, doc_rect, &view_rect);
2346                         view_rect.x -= view->scroll_x;
2347                         view_rect.y -= view->scroll_y;
2348
2349                         ev_view_window_child_put (view, window, page,
2350                                                   view_rect.x, view_rect.y,
2351                                                   doc_rect->x1, doc_rect->y1);
2352
2353                         g_object_weak_ref (G_OBJECT (annot),
2354                                            (GWeakNotify)ev_view_annotation_save,
2355                                            view);
2356                 }
2357         }
2358 }
2359
2360 static void
2361 hide_annotation_windows (EvView *view,
2362                          gint    page)
2363 {
2364         GList *annots, *l;
2365
2366         annots = ev_pixbuf_cache_get_annots_mapping (view->pixbuf_cache, page);
2367
2368         for (l = annots; l && l->data; l = g_list_next (l)) {
2369                 EvAnnotation *annot;
2370                 GtkWidget    *window;
2371
2372                 annot = ((EvMapping *)(l->data))->data;
2373
2374                 if (!EV_IS_ANNOTATION_MARKUP (annot))
2375                         continue;
2376
2377                 window = g_object_get_data (G_OBJECT (annot), "popup");
2378                 if (window)
2379                         gtk_widget_hide (window);
2380         }
2381 }
2382
2383 static EvAnnotation *
2384 ev_view_get_annotation_at_location (EvView  *view,
2385                                     gdouble  x,
2386                                     gdouble  y)
2387 {
2388         gint page = -1;
2389         gint x_offset = 0, y_offset = 0;
2390         gint x_new = 0, y_new = 0;
2391         GList *annotations_mapping;
2392
2393         if (!EV_IS_DOCUMENT_ANNOTATIONS (view->document))
2394                 return NULL;
2395
2396         x += view->scroll_x;
2397         y += view->scroll_y;
2398
2399         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
2400
2401         if (page == -1)
2402                 return NULL;
2403
2404         if (get_doc_point_from_offset (view, page, x_offset,
2405                                        y_offset, &x_new, &y_new) == FALSE)
2406                 return NULL;
2407
2408         annotations_mapping = ev_pixbuf_cache_get_annots_mapping (view->pixbuf_cache, page);
2409
2410         if (annotations_mapping)
2411                 return ev_mapping_list_get_data (annotations_mapping, x_new, y_new);
2412         else
2413                 return NULL;
2414 }
2415
2416 static void
2417 ev_view_handle_annotation (EvView       *view,
2418                            EvAnnotation *annot,
2419                            gdouble       x,
2420                            gdouble       y)
2421 {
2422         if (EV_IS_ANNOTATION_MARKUP (annot)) {
2423                 GtkWidget *window;
2424
2425                 window = g_object_get_data (G_OBJECT (annot), "popup");
2426                 if (window) {
2427                         EvViewWindowChild *child;
2428
2429                         child = ev_view_get_window_child (view, window);
2430                         if (!child->visible) {
2431                                 child->visible = TRUE;
2432                                 ev_view_window_child_move (view, child, child->x, child->y);
2433                                 gtk_widget_show (window);
2434                         }
2435                 }
2436         }
2437 }
2438
2439 /*** GtkWidget implementation ***/
2440
2441 static void
2442 ev_view_size_request_continuous_dual_page (EvView         *view,
2443                                            GtkRequisition *requisition)
2444 {
2445         int max_width;
2446         gint n_pages;
2447         GtkBorder border;
2448
2449         ev_page_cache_get_max_width (view->page_cache, view->rotation,
2450                                      view->scale, &max_width);
2451         compute_border (view, max_width, max_width, &border);
2452
2453         n_pages = ev_page_cache_get_n_pages (view->page_cache) + 1;
2454
2455         requisition->width = (max_width + border.left + border.right) * 2 + (view->spacing * 3);
2456         get_page_y_offset (view, n_pages, view->scale, &requisition->height);
2457
2458         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
2459                 requisition->width = 1;
2460         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
2461                 requisition->width = 1;
2462                 /* FIXME: This could actually be set on one page docs or docs
2463                  * with a strange aspect ratio. */
2464                 /* requisition->height = 1;*/
2465         }
2466 }
2467
2468 static void
2469 ev_view_size_request_continuous (EvView         *view,
2470                                  GtkRequisition *requisition)
2471 {
2472         int max_width;
2473         int n_pages;
2474         GtkBorder border;
2475
2476
2477         ev_page_cache_get_max_width (view->page_cache, view->rotation,
2478                                      view->scale, &max_width);
2479         n_pages = ev_page_cache_get_n_pages (view->page_cache);
2480         compute_border (view, max_width, max_width, &border);
2481
2482         requisition->width = max_width + (view->spacing * 2) + border.left + border.right;
2483         get_page_y_offset (view, n_pages, view->scale, &requisition->height);
2484
2485         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
2486                 requisition->width = 1;
2487         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
2488                 requisition->width = 1;
2489                 /* FIXME: This could actually be set on one page docs or docs
2490                  * with a strange aspect ratio. */
2491                 /* requisition->height = 1;*/
2492         }
2493 }
2494
2495 static void
2496 ev_view_size_request_dual_page (EvView         *view,
2497                                 GtkRequisition *requisition)
2498 {
2499         GtkBorder border;
2500         gint width, height;
2501
2502         /* Find the largest of the two. */
2503         ev_page_cache_get_size (view->page_cache,
2504                                 view->current_page,
2505                                 view->rotation,
2506                                 view->scale,
2507                                 &width, &height);
2508         if (view->current_page + 1 < ev_page_cache_get_n_pages (view->page_cache)) {
2509                 gint width_2, height_2;
2510                 ev_page_cache_get_size (view->page_cache,
2511                                         view->current_page + 1,
2512                                         view->rotation,
2513                                         view->scale,
2514                                         &width_2, &height_2);
2515                 if (width_2 > width) {
2516                         width = width_2;
2517                         height = height_2;
2518                 }
2519         }
2520         compute_border (view, width, height, &border);
2521
2522         requisition->width = ((width + border.left + border.right) * 2) +
2523                 (view->spacing * 3);
2524         requisition->height = (height + border.top + border.bottom) +
2525                 (view->spacing * 2);
2526
2527         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
2528                 requisition->width = 1;
2529         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
2530                 requisition->width = 1;
2531                 requisition->height = 1;
2532         }
2533 }
2534
2535 static void
2536 ev_view_size_request_single_page (EvView         *view,
2537                                   GtkRequisition *requisition)
2538 {
2539         GtkBorder border;
2540         gint width, height;
2541
2542         ev_page_cache_get_size (view->page_cache,
2543                                 view->current_page,
2544                                 view->rotation,
2545                                 view->scale,
2546                                 &width, &height);
2547         compute_border (view, width, height, &border);
2548
2549         requisition->width = width + border.left + border.right + (2 * view->spacing);
2550         requisition->height = height + border.top + border.bottom + (2 * view->spacing);
2551
2552         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
2553                 requisition->width = 1;
2554                 requisition->height = height + border.top + border.bottom + (2 * view->spacing);
2555         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
2556                 requisition->width = 1;
2557                 requisition->height = 1;
2558         }
2559 }
2560
2561 static void
2562 ev_view_size_request (GtkWidget      *widget,
2563                       GtkRequisition *requisition)
2564 {
2565         EvView *view = EV_VIEW (widget);
2566
2567         if (view->document == NULL) {
2568                 requisition->width = 1;
2569                 requisition->height = 1;
2570                 return;
2571         }
2572
2573         if (view->presentation) {
2574                 requisition->width = 1;
2575                 requisition->height = 1;
2576                 return;
2577         }
2578
2579         if (view->continuous && view->dual_page)
2580                 ev_view_size_request_continuous_dual_page (view, requisition);
2581         else if (view->continuous)
2582                 ev_view_size_request_continuous (view, requisition);
2583         else if (view->dual_page)
2584                 ev_view_size_request_dual_page (view, requisition);
2585         else
2586                 ev_view_size_request_single_page (view, requisition);
2587 }
2588
2589 static void
2590 ev_view_size_allocate (GtkWidget      *widget,
2591                        GtkAllocation  *allocation)
2592 {
2593         EvView *view = EV_VIEW (widget);
2594         GList  *children, *l;
2595         gint    root_x, root_y;
2596
2597         GTK_WIDGET_CLASS (ev_view_parent_class)->size_allocate (widget, allocation);
2598
2599         if (view->sizing_mode == EV_SIZING_FIT_WIDTH ||
2600             view->sizing_mode == EV_SIZING_BEST_FIT) {
2601                 g_signal_emit (view, signals[SIGNAL_ZOOM_INVALID], 0);
2602                 ev_view_size_request (widget, &widget->requisition);
2603         }
2604
2605         view_set_adjustment_values (view, GTK_ORIENTATION_HORIZONTAL);
2606         view_set_adjustment_values (view, GTK_ORIENTATION_VERTICAL);
2607
2608         if (view->document)
2609                 view_update_range_and_current_page (view);
2610
2611         view->pending_scroll = SCROLL_TO_KEEP_POSITION;
2612         view->pending_resize = FALSE;
2613
2614         children = gtk_container_get_children (GTK_CONTAINER (widget));
2615         for (l = children; l && l->data; l = g_list_next (l)) {
2616                 EvFormField   *field;
2617                 GdkRectangle   view_area;
2618                 GList         *form_field_mapping;
2619                 EvMapping     *mapping;
2620                 GtkAllocation  child_allocation;
2621                 GtkRequisition child_requisition;
2622                 GtkWidget     *child = (GtkWidget *)l->data;
2623
2624                 field = g_object_get_data (G_OBJECT (child), "form-field");
2625                 if (!field)
2626                         continue;
2627
2628                 form_field_mapping = ev_pixbuf_cache_get_form_field_mapping (view->pixbuf_cache,
2629                                                                              field->page->index);
2630                 mapping = ev_mapping_list_find (form_field_mapping, field);
2631
2632                 doc_rect_to_view_rect (view, field->page->index, &mapping->area, &view_area);
2633                 view_area.x -= view->scroll_x;
2634                 view_area.y -= view->scroll_y;
2635
2636                 gtk_widget_size_request (child, &child_requisition);
2637                 if (child_requisition.width != view_area.width ||
2638                     child_requisition.height != view_area.height)
2639                         gtk_widget_set_size_request (child, view_area.width, view_area.height);
2640
2641                 gtk_container_child_get (GTK_CONTAINER (widget),
2642                                          child,
2643                                          "x", &child_allocation.x,
2644                                          "y", &child_allocation.y,
2645                                          NULL);
2646                 if (child_allocation.x != view_area.x ||
2647                     child_allocation.y != view_area.y) {
2648                         gtk_layout_move (GTK_LAYOUT (widget), child, view_area.x, view_area.y);
2649                 }
2650         }
2651         g_list_free (children);
2652
2653         if (view->window_children)
2654                 gdk_window_get_origin (gtk_widget_get_window (GTK_WIDGET (view)),
2655                                        &root_x, &root_y);
2656
2657         for (l = view->window_children; l && l->data; l = g_list_next (l)) {
2658                 EvViewWindowChild *child;
2659                 EvRectangle        doc_rect;
2660                 GdkRectangle       view_rect;
2661
2662                 child = (EvViewWindowChild *)l->data;
2663
2664                 doc_rect = *ev_annotation_window_get_rectangle (EV_ANNOTATION_WINDOW (child->window));
2665                 if (child->moved) {
2666                         doc_rect.x1 = child->orig_x;
2667                         doc_rect.y1 = child->orig_y;
2668                 }
2669                 doc_rect_to_view_rect (view, child->page, &doc_rect, &view_rect);
2670                 view_rect.x -= view->scroll_x;
2671                 view_rect.y -= view->scroll_y;
2672
2673                 if (view_rect.x != child->orig_x || view_rect.y != child->orig_y) {
2674                         child->parent_x = root_x;
2675                         child->parent_y = root_y;
2676                         ev_view_window_child_move (view, child, view_rect.x + root_x, view_rect.y + root_y);
2677                 }
2678         }
2679 }
2680
2681 static void
2682 ev_view_realize (GtkWidget *widget)
2683 {
2684         EvView *view = EV_VIEW (widget);
2685
2686         if (GTK_WIDGET_CLASS (ev_view_parent_class)->realize)
2687                 (* GTK_WIDGET_CLASS (ev_view_parent_class)->realize) (widget);
2688
2689         gdk_window_set_events (view->layout.bin_window,
2690                                (gdk_window_get_events (view->layout.bin_window) |
2691                                 GDK_EXPOSURE_MASK |
2692                                 GDK_BUTTON_PRESS_MASK |
2693                                 GDK_BUTTON_RELEASE_MASK |
2694                                 GDK_SCROLL_MASK |
2695                                 GDK_KEY_PRESS_MASK |
2696                                 GDK_POINTER_MOTION_MASK |
2697                                 GDK_POINTER_MOTION_HINT_MASK |
2698                                 GDK_ENTER_NOTIFY_MASK |
2699                                 GDK_LEAVE_NOTIFY_MASK));
2700
2701         if (view->presentation)
2702                 gdk_window_set_background (view->layout.bin_window, &widget->style->black);
2703         else
2704                 gdk_window_set_background (view->layout.bin_window, &widget->style->mid [GTK_STATE_NORMAL]);
2705 }
2706
2707 static gboolean
2708 ev_view_scroll_event (GtkWidget *widget, GdkEventScroll *event)
2709 {
2710         EvView *view = EV_VIEW (widget);
2711         guint state;
2712
2713         state = event->state & gtk_accelerator_get_default_mod_mask ();
2714
2715         if (state == GDK_CONTROL_MASK && view->presentation == FALSE) {
2716                 ev_view_set_sizing_mode (view, EV_SIZING_FREE);
2717
2718                 if (event->direction == GDK_SCROLL_UP ||
2719                     event->direction == GDK_SCROLL_LEFT) {
2720                         if (ev_view_can_zoom_in (view)) {
2721                                 ev_view_zoom_in (view);
2722                         }
2723                 } else {
2724                         if (ev_view_can_zoom_out (view)) {
2725                                 ev_view_zoom_out (view);
2726                         }
2727                 }
2728
2729                 return TRUE;
2730         }
2731
2732         view->jump_to_find_result = FALSE;
2733
2734         /* Shift+Wheel scrolls the in the perpendicular direction */
2735         if (state & GDK_SHIFT_MASK) {
2736                 if (event->direction == GDK_SCROLL_UP)
2737                         event->direction = GDK_SCROLL_LEFT;
2738                 else if (event->direction == GDK_SCROLL_LEFT)
2739                         event->direction = GDK_SCROLL_UP;
2740                 else if (event->direction == GDK_SCROLL_DOWN)
2741                         event->direction = GDK_SCROLL_RIGHT;
2742                 else if (event->direction == GDK_SCROLL_RIGHT)
2743                         event->direction = GDK_SCROLL_DOWN;
2744
2745                 event->state &= ~GDK_SHIFT_MASK;
2746                 state &= ~GDK_SHIFT_MASK;
2747         }
2748
2749         if (state == 0 && view->presentation) {
2750                 switch (event->direction) {
2751                         case GDK_SCROLL_DOWN:
2752                         case GDK_SCROLL_RIGHT:
2753                                 ev_view_next_page (view);
2754                                 break;
2755                         case GDK_SCROLL_UP:
2756                         case GDK_SCROLL_LEFT:
2757                                 ev_view_previous_page (view);
2758                                 break;
2759                 }
2760
2761                 return TRUE;
2762         }
2763
2764         return FALSE;
2765 }
2766
2767 static EvViewSelection *
2768 find_selection_for_page (EvView *view,
2769                          gint    page)
2770 {
2771         GList *list;
2772
2773         for (list = view->selection_info.selections; list != NULL; list = list->next) {
2774                 EvViewSelection *selection;
2775
2776                 selection = (EvViewSelection *) list->data;
2777
2778                 if (selection->page == page)
2779                         return selection;
2780         }
2781
2782         return NULL;
2783 }
2784
2785 static void
2786 draw_end_presentation_page (EvView       *view,
2787                             GdkRectangle *page_area)
2788 {
2789         PangoLayout *layout;
2790         PangoFontDescription *font_desc;
2791         gchar *markup;
2792         const gchar *text = _("End of presentation. Press Escape to exit.");
2793
2794         if (view->presentation_state != EV_PRESENTATION_END)
2795                 return;
2796
2797         layout = gtk_widget_create_pango_layout (GTK_WIDGET (view), NULL);
2798         markup = g_strdup_printf ("<span foreground=\"white\">%s</span>", text);
2799         pango_layout_set_markup (layout, markup, -1);
2800         g_free (markup);
2801
2802         font_desc = pango_font_description_new ();
2803         pango_font_description_set_size (font_desc, 16 * PANGO_SCALE);
2804         pango_layout_set_font_description (layout, font_desc);
2805
2806         gtk_paint_layout (GTK_WIDGET (view)->style,
2807                           view->layout.bin_window,
2808                           GTK_WIDGET_STATE (view),
2809                           FALSE,
2810                           page_area,
2811                           GTK_WIDGET (view),
2812                           NULL,
2813                           page_area->x + 15,
2814                           page_area->y + 15,
2815                           layout);
2816
2817         pango_font_description_free (font_desc);
2818         g_object_unref (layout);
2819 }
2820
2821 static gboolean
2822 ev_view_expose_event (GtkWidget      *widget,
2823                       GdkEventExpose *event)
2824 {
2825         EvView  *view = EV_VIEW (widget);
2826         cairo_t *cr;
2827         gint     i;
2828
2829         if (view->animation) {
2830                 if (ev_transition_animation_ready (view->animation)) {
2831                         GdkRectangle page_area;
2832                         GtkBorder    border;
2833
2834                         if (get_page_extents (view, view->current_page, &page_area, &border)) {
2835                                 cr = gdk_cairo_create (view->layout.bin_window);
2836
2837                                 /* normalize to x=0, y=0 */
2838                                 cairo_translate (cr, page_area.x, page_area.y);
2839                                 page_area.x = page_area.y = 0;
2840
2841                                 ev_transition_animation_paint (view->animation, cr, page_area);
2842                                 cairo_destroy (cr);
2843                         }
2844                 }
2845
2846                 return TRUE;
2847         }
2848
2849         if (view->presentation) {
2850                 switch (view->presentation_state) {
2851                         case EV_PRESENTATION_END: {
2852                                 GdkRectangle area = {0};
2853
2854                                 area.width = widget->allocation.width;
2855                                 area.height = widget->allocation.height;
2856
2857                                 draw_end_presentation_page (view, &area);
2858                         }
2859                                 return FALSE;
2860                         case EV_PRESENTATION_BLACK:
2861                         case EV_PRESENTATION_WHITE:
2862                                 return FALSE;
2863                         case EV_PRESENTATION_NORMAL:
2864                         default:
2865                                 break;
2866                 }
2867         } else if (view->loading) {
2868                 GdkRectangle area = {0};
2869
2870                 area.width = widget->allocation.width;
2871                 area.height = widget->allocation.height;
2872
2873                 draw_loading_text (view,
2874                                    &area,
2875                                    &(event->area));
2876         }
2877
2878         if (view->document == NULL)
2879                 return FALSE;
2880
2881         cr = gdk_cairo_create (view->layout.bin_window);
2882
2883         for (i = view->start_page; i <= view->end_page; i++) {
2884                 GdkRectangle page_area;
2885                 GtkBorder border;
2886                 gboolean page_ready = TRUE;
2887
2888                 if (!get_page_extents (view, i, &page_area, &border))
2889                         continue;
2890
2891                 page_area.x -= view->scroll_x;
2892                 page_area.y -= view->scroll_y;
2893
2894                 draw_one_page (view, i, cr, &page_area, &border, &(event->area), &page_ready);
2895
2896                 if (page_ready && view->find_pages && view->highlight_find_results)
2897                         highlight_find_results (view, i);
2898                 if (page_ready && EV_IS_DOCUMENT_ANNOTATIONS (view->document))
2899                         show_annotation_windows (view, i);
2900         }
2901
2902         cairo_destroy (cr);
2903
2904         if (GTK_WIDGET_CLASS (ev_view_parent_class)->expose_event)
2905                 (* GTK_WIDGET_CLASS (ev_view_parent_class)->expose_event) (widget, event);
2906
2907         return FALSE;
2908 }
2909
2910 static gboolean
2911 ev_view_do_popup_menu (EvView *view,
2912                        gdouble x,
2913                        gdouble y)
2914 {
2915         EvLink  *link;
2916         EvImage *image;
2917
2918         image = ev_view_get_image_at_location (view, x, y);
2919         if (image) {
2920                 g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, image);
2921                 return TRUE;
2922         }
2923
2924         link = ev_view_get_link_at_location (view, x, y);
2925         if (link) {
2926                 g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, link);
2927                 return TRUE;
2928         }
2929
2930         g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, NULL);
2931
2932         return TRUE;
2933 }
2934
2935 static gboolean
2936 ev_view_popup_menu (GtkWidget *widget)
2937 {
2938         gint x, y;
2939
2940         gtk_widget_get_pointer (widget, &x, &y);
2941         return ev_view_do_popup_menu (EV_VIEW (widget), x, y);
2942 }
2943
2944 static void
2945 get_link_area (EvView       *view,
2946                gint          x,
2947                gint          y,
2948                EvLink       *link,
2949                GdkRectangle *area)
2950 {
2951         GList     *link_mapping;
2952         EvMapping *mapping;
2953         gint       page;
2954         gint       x_offset = 0, y_offset = 0;
2955
2956         x += view->scroll_x;
2957         y += view->scroll_y;
2958
2959         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
2960
2961         link_mapping = ev_pixbuf_cache_get_link_mapping (view->pixbuf_cache, page);
2962         mapping = ev_mapping_list_find (link_mapping, link);
2963
2964         doc_rect_to_view_rect (view, page, &mapping->area, area);
2965         area->y -= view->scroll_y;
2966 }
2967
2968 static void
2969 get_annot_area (EvView       *view,
2970                gint          x,
2971                gint          y,
2972                EvAnnotation *annot,
2973                GdkRectangle *area)
2974 {
2975         GList     *annots_mapping;
2976         EvMapping *mapping;
2977         gint       page;
2978         gint       x_offset = 0, y_offset = 0;
2979
2980         x += view->scroll_x;
2981         y += view->scroll_y;
2982
2983         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
2984
2985         annots_mapping = ev_pixbuf_cache_get_annots_mapping (view->pixbuf_cache, page);
2986         mapping = ev_mapping_list_find (annots_mapping, annot);
2987
2988         doc_rect_to_view_rect (view, page, &mapping->area, area);
2989         area->y -= view->scroll_y;
2990 }
2991
2992 static gboolean
2993 ev_view_query_tooltip (GtkWidget  *widget,
2994                        gint        x,
2995                        gint        y,
2996                        gboolean    keyboard_tip,
2997                        GtkTooltip *tooltip)
2998 {
2999         EvView       *view = EV_VIEW (widget);
3000         EvLink       *link;
3001         EvAnnotation *annot;
3002         gchar        *text;
3003
3004         annot = ev_view_get_annotation_at_location (view, x, y);
3005         if (annot && annot->contents) {
3006                 GdkRectangle annot_area;
3007
3008                 get_annot_area (view, x, y, annot, &annot_area);
3009                 gtk_tooltip_set_text (tooltip, annot->contents);
3010                 gtk_tooltip_set_tip_area (tooltip, &annot_area);
3011
3012                 return TRUE;
3013         }
3014
3015         link = ev_view_get_link_at_location (view, x, y);
3016         if (!link)
3017                 return FALSE;
3018
3019         text = tip_from_link (view, link);
3020         if (text && g_utf8_validate (text, -1, NULL)) {
3021                 GdkRectangle link_area;
3022
3023                 get_link_area (view, x, y, link, &link_area);
3024                 gtk_tooltip_set_text (tooltip, text);
3025                 gtk_tooltip_set_tip_area (tooltip, &link_area);
3026         }
3027         g_free (text);
3028
3029         return TRUE;
3030 }
3031
3032 static void
3033 start_selection_for_event (EvView         *view,
3034                            GdkEventButton *event)
3035 {
3036         EvSelectionStyle style;
3037
3038         clear_selection (view);
3039
3040         view->selection_info.start.x = event->x + view->scroll_x;
3041         view->selection_info.start.y = event->y + view->scroll_y;
3042
3043         switch (event->type) {
3044                 case GDK_2BUTTON_PRESS:
3045                         style = EV_SELECTION_STYLE_WORD;
3046                         break;
3047                 case GDK_3BUTTON_PRESS:
3048                         style = EV_SELECTION_STYLE_LINE;
3049                         break;
3050                 default:
3051                         style = EV_SELECTION_STYLE_GLYPH;
3052                         break;
3053         }
3054
3055         view->selection_info.style = style;
3056 }
3057
3058 static gboolean
3059 ev_view_button_press_event (GtkWidget      *widget,
3060                             GdkEventButton *event)
3061 {
3062         EvView *view = EV_VIEW (widget);
3063
3064         if (!view->document)
3065                 return FALSE;
3066
3067         if (!GTK_WIDGET_HAS_FOCUS (widget)) {
3068                 gtk_widget_grab_focus (widget);
3069         }
3070
3071         if (view->window_child_focus) {
3072                 EvAnnotationWindow *window;
3073                 EvAnnotation       *annot;
3074
3075                 window = EV_ANNOTATION_WINDOW (view->window_child_focus->window);
3076                 annot = ev_annotation_window_get_annotation (window);
3077                 ev_annotation_window_ungrab_focus (window);
3078                 ev_view_annotation_save (view, annot);
3079                 view->window_child_focus = NULL;
3080         }
3081
3082         view->pressed_button = event->button;
3083         view->selection_info.in_drag = FALSE;
3084
3085         if (view->scroll_info.autoscrolling)
3086                 return TRUE;
3087
3088         switch (event->button) {
3089                 case 1: {
3090                         EvImage *image;
3091                         EvAnnotation *annot;
3092                         EvFormField *field;
3093
3094                         if (EV_IS_SELECTION (view->document) && view->selection_info.selections) {
3095                                 if (event->type == GDK_3BUTTON_PRESS) {
3096                                         start_selection_for_event (view, event);
3097                                 } else if (location_in_selected_text (view,
3098                                                                event->x + view->scroll_x,
3099                                                                event->y + view->scroll_y)) {
3100                                         view->selection_info.in_drag = TRUE;
3101                                 } else {
3102                                         start_selection_for_event (view, event);
3103                                 }
3104
3105                                 gtk_widget_queue_draw (widget);
3106                         } else if ((annot = ev_view_get_annotation_at_location (view, event->x, event->y))) {
3107                                 ev_view_handle_annotation (view, annot, event->x, event->y);
3108                         } else if ((field = ev_view_get_form_field_at_location (view, event->x, event->y))) {
3109                                 ev_view_remove_all (view);
3110                                 ev_view_handle_form_field (view, field, event->x, event->y);
3111                         } else if (!location_in_text (view, event->x + view->scroll_x, event->y + view->scroll_y) &&
3112                                    (image = ev_view_get_image_at_location (view, event->x, event->y))) {
3113                                 if (view->image_dnd_info.image)
3114                                         g_object_unref (view->image_dnd_info.image);
3115                                 view->image_dnd_info.image = g_object_ref (image);
3116                                 view->image_dnd_info.in_drag = TRUE;
3117
3118                                 view->image_dnd_info.start.x = event->x + view->scroll_x;
3119                                 view->image_dnd_info.start.y = event->y + view->scroll_y;
3120                         } else {
3121                                 ev_view_remove_all (view);
3122
3123                                 if (EV_IS_SELECTION (view->document))
3124                                         start_selection_for_event (view, event);
3125                         }
3126                 }
3127                         return TRUE;
3128                 case 2:
3129                         /* use root coordinates as reference point because
3130                          * scrolling changes window relative coordinates */
3131                         view->drag_info.start.x = event->x_root;
3132                         view->drag_info.start.y = event->y_root;
3133                         view->drag_info.hadj = gtk_adjustment_get_value (view->hadjustment);
3134                         view->drag_info.vadj = gtk_adjustment_get_value (view->vadjustment);
3135
3136                         ev_view_set_cursor (view, EV_VIEW_CURSOR_DRAG);
3137
3138                         return TRUE;
3139                 case 3:
3140                         view->scroll_info.start_y = event->y;
3141                         return ev_view_do_popup_menu (view, event->x, event->y);
3142         }
3143
3144         return FALSE;
3145 }
3146
3147 static void
3148 ev_view_remove_all (EvView *view)
3149 {
3150         GList *children, *child;
3151
3152         children = gtk_container_get_children (GTK_CONTAINER (view));
3153         for (child = children; child && child->data; child = g_list_next (child)) {
3154                 gtk_container_remove (GTK_CONTAINER (view),
3155                                       GTK_WIDGET (child->data));
3156         }
3157         g_list_free (children);
3158 }
3159
3160 /*** Drag and Drop ***/
3161 static void
3162 ev_view_drag_data_get (GtkWidget        *widget,
3163                        GdkDragContext   *context,
3164                        GtkSelectionData *selection_data,
3165                        guint             info,
3166                        guint             time)
3167 {
3168         EvView *view = EV_VIEW (widget);
3169
3170         switch (info) {
3171                 case TARGET_DND_TEXT:
3172                         if (EV_IS_SELECTION (view->document) &&
3173                             view->selection_info.selections) {
3174                                 gchar *text;
3175
3176                                 text = get_selected_text (view);
3177                                 gtk_selection_data_set_text (selection_data,
3178                                                              text,
3179                                                              strlen (text));
3180                                 g_free (text);
3181                         }
3182                         break;
3183                 case TARGET_DND_IMAGE:
3184                         if (view->image_dnd_info.image) {
3185                                 GdkPixbuf *pixbuf;
3186
3187                                 ev_document_doc_mutex_lock ();
3188                                 pixbuf = ev_document_images_get_image (EV_DOCUMENT_IMAGES (view->document),
3189                                                                        view->image_dnd_info.image);
3190                                 ev_document_doc_mutex_unlock ();
3191
3192                                 gtk_selection_data_set_pixbuf (selection_data, pixbuf);
3193                                 g_object_unref (pixbuf);
3194                         }
3195                         break;
3196                 case TARGET_DND_URI:
3197                         if (view->image_dnd_info.image) {
3198                                 GdkPixbuf   *pixbuf;
3199                                 const gchar *tmp_uri;
3200                                 gchar       *uris[2];
3201
3202                                 ev_document_doc_mutex_lock ();
3203                                 pixbuf = ev_document_images_get_image (EV_DOCUMENT_IMAGES (view->document),
3204                                                                        view->image_dnd_info.image);
3205                                 ev_document_doc_mutex_unlock ();
3206
3207                                 tmp_uri = ev_image_save_tmp (view->image_dnd_info.image, pixbuf);
3208                                 g_object_unref (pixbuf);
3209
3210                                 uris[0] = (gchar *)tmp_uri;
3211                                 uris[1] = NULL;
3212                                 gtk_selection_data_set_uris (selection_data, uris);
3213                         }
3214         }
3215 }
3216
3217 static gboolean
3218 ev_view_drag_motion (GtkWidget      *widget,
3219                      GdkDragContext *context,
3220                      gint            x,
3221                      gint            y,
3222                      guint           time)
3223 {
3224         if (gtk_drag_get_source_widget (context) == widget)
3225                 gdk_drag_status (context, 0, time);
3226         else
3227                 gdk_drag_status (context, context->suggested_action, time);
3228
3229         return TRUE;
3230 }
3231
3232 static gboolean
3233 selection_update_idle_cb (EvView *view)
3234 {
3235         compute_selections (view,
3236                             view->selection_info.style,
3237                             &view->selection_info.start,
3238                             &view->motion);
3239         view->selection_update_id = 0;
3240         return FALSE;
3241 }
3242
3243 static gboolean
3244 selection_scroll_timeout_cb (EvView *view)
3245 {
3246         gint x, y, shift = 0;
3247         GtkWidget *widget = GTK_WIDGET (view);
3248
3249         gtk_widget_get_pointer (widget, &x, &y);
3250
3251         if (y > widget->allocation.height) {
3252                 shift = (y - widget->allocation.height) / 2;
3253         } else if (y < 0) {
3254                 shift = y / 2;
3255         }
3256
3257         if (shift)
3258                 gtk_adjustment_set_value (view->vadjustment,
3259                                           CLAMP (view->vadjustment->value + shift,
3260                                           view->vadjustment->lower,
3261                                           view->vadjustment->upper -
3262                                           view->vadjustment->page_size));
3263
3264         if (x > widget->allocation.width) {
3265                 shift = (x - widget->allocation.width) / 2;
3266         } else if (x < 0) {
3267                 shift = x / 2;
3268         }
3269
3270         if (shift)
3271                 gtk_adjustment_set_value (view->hadjustment,
3272                                           CLAMP (view->hadjustment->value + shift,
3273                                           view->hadjustment->lower,
3274                                           view->hadjustment->upper -
3275                                           view->hadjustment->page_size));
3276
3277         return TRUE;
3278 }
3279
3280 static gboolean
3281 ev_view_drag_update_momentum (EvView *view)
3282 {
3283         int i;
3284         if (!view->drag_info.in_drag)
3285                 return FALSE;
3286
3287         for (i = DRAG_HISTORY - 1; i > 0; i--) {
3288                 view->drag_info.buffer[i].x = view->drag_info.buffer[i-1].x;
3289                 view->drag_info.buffer[i].y = view->drag_info.buffer[i-1].y;
3290         }
3291
3292         /* Momentum is a moving average of 10ms granularity over
3293          * the last 100ms with each 10ms stored in buffer.
3294          */
3295
3296         view->drag_info.momentum.x = (view->drag_info.buffer[DRAG_HISTORY - 1].x - view->drag_info.buffer[0].x);
3297         view->drag_info.momentum.y = (view->drag_info.buffer[DRAG_HISTORY - 1].y - view->drag_info.buffer[0].y);
3298
3299         return TRUE;
3300 }
3301
3302 static gboolean
3303 ev_view_scroll_drag_release (EvView *view)
3304 {
3305         gdouble dhadj_value, dvadj_value;
3306         gdouble oldhadjustment, oldvadjustment;
3307
3308         view->drag_info.momentum.x /= 1.2;
3309         view->drag_info.momentum.y /= 1.2; /* Alter these constants to change "friction" */
3310
3311         dhadj_value = view->hadjustment->page_size *
3312                       (gdouble)view->drag_info.momentum.x / GTK_WIDGET (view)->allocation.width;
3313         dvadj_value = view->vadjustment->page_size *
3314                       (gdouble)view->drag_info.momentum.y / GTK_WIDGET (view)->allocation.height;
3315
3316         oldhadjustment = gtk_adjustment_get_value (view->hadjustment);
3317         oldvadjustment = gtk_adjustment_get_value (view->vadjustment);
3318
3319      /* When we reach the edges, we need either to absorb some momentum and bounce by
3320       * multiplying it on -0.5 or stop scrolling by setting momentum to 0. */
3321      if (((oldhadjustment + dhadj_value) > (view->hadjustment->upper - view->hadjustment->page_size)) ||
3322            ((oldhadjustment + dhadj_value) < 0))
3323                 view->drag_info.momentum.x = 0;
3324         if (((oldvadjustment + dvadj_value) > (view->vadjustment->upper - view->vadjustment->page_size)) ||
3325            ((oldvadjustment + dvadj_value) < 0))
3326                 view->drag_info.momentum.y = 0;
3327
3328         gtk_adjustment_set_value (view->hadjustment,
3329                                 MIN (oldhadjustment + dhadj_value,
3330                                 view->hadjustment->upper - view->hadjustment->page_size));
3331         gtk_adjustment_set_value (view->vadjustment,
3332                                 MIN (oldvadjustment + dvadj_value,
3333                                 view->vadjustment->upper - view->vadjustment->page_size));
3334
3335         if (((view->drag_info.momentum.x < 1) && (view->drag_info.momentum.x > -1)) &&
3336            ((view->drag_info.momentum.y < 1) && (view->drag_info.momentum.y > -1)))
3337                 return FALSE;
3338         else
3339                 return TRUE;
3340 }
3341
3342 static gboolean
3343 ev_view_motion_notify_event (GtkWidget      *widget,
3344                              GdkEventMotion *event)
3345 {
3346         EvView *view = EV_VIEW (widget);
3347         gint x, y;
3348
3349         if (!view->document)
3350                 return FALSE;
3351
3352
3353         if (event->is_hint || event->window != view->layout.bin_window) {
3354             gtk_widget_get_pointer (widget, &x, &y);
3355         } else {
3356             x = event->x;
3357             y = event->y;
3358         }
3359
3360         if (view->scroll_info.autoscrolling) {
3361                 view->scroll_info.last_y = y;
3362                 return TRUE;
3363         }
3364
3365         if (view->selection_info.in_drag) {
3366                 if (gtk_drag_check_threshold (widget,
3367                                               view->selection_info.start.x,
3368                                               view->selection_info.start.y,
3369                                               x, y)) {
3370                         GtkTargetList *target_list = gtk_target_list_new (NULL, 0);
3371
3372                         gtk_target_list_add_text_targets (target_list, TARGET_DND_TEXT);
3373
3374                         gtk_drag_begin (widget, target_list,
3375                                         GDK_ACTION_COPY,
3376                                         1, (GdkEvent *)event);
3377
3378                         view->selection_info.in_drag = FALSE;
3379
3380                         gtk_target_list_unref (target_list);
3381
3382                         return TRUE;
3383                 }
3384         } else if (view->image_dnd_info.in_drag) {
3385                 if (gtk_drag_check_threshold (widget,
3386                                               view->selection_info.start.x,
3387                                               view->selection_info.start.y,
3388                                               x, y)) {
3389                         GtkTargetList *target_list = gtk_target_list_new (NULL, 0);
3390
3391                         gtk_target_list_add_uri_targets (target_list, TARGET_DND_URI);
3392                         gtk_target_list_add_image_targets (target_list, TARGET_DND_IMAGE, TRUE);
3393
3394                         gtk_drag_begin (widget, target_list,
3395                                         GDK_ACTION_COPY,
3396                                         1, (GdkEvent *)event);
3397
3398                         view->image_dnd_info.in_drag = FALSE;
3399
3400                         gtk_target_list_unref (target_list);
3401
3402                         return TRUE;
3403                 }
3404         }
3405
3406         switch (view->pressed_button) {
3407         case 1:
3408                 /* For the Evince 0.4.x release, we limit selection to un-rotated
3409                  * documents only.
3410                  */
3411                 if (view->rotation != 0)
3412                         return FALSE;
3413
3414                 /* Schedule timeout to scroll during selection and additionally
3415                  * scroll once to allow arbitrary speed. */
3416                 if (!view->selection_scroll_id)
3417                     view->selection_scroll_id = g_timeout_add (SCROLL_TIME,
3418                                                                (GSourceFunc)selection_scroll_timeout_cb,
3419                                                                view);
3420                 else
3421                     selection_scroll_timeout_cb (view);
3422
3423                 view->selection_info.in_selection = TRUE;
3424                 view->motion.x = x + view->scroll_x;
3425                 view->motion.y = y + view->scroll_y;
3426
3427                 /* Queue an idle to handle the motion.  We do this because
3428                  * handling any selection events in the motion could be slower
3429                  * than new motion events reach us.  We always put it in the
3430                  * idle to make sure we catch up and don't visibly lag the
3431                  * mouse. */
3432                 if (!view->selection_update_id)
3433                         view->selection_update_id = g_idle_add ((GSourceFunc)selection_update_idle_cb, view);
3434
3435                 return TRUE;
3436         case 2:
3437                 if (!view->drag_info.in_drag) {
3438                         gboolean start;
3439                         int i;
3440
3441                         start = gtk_drag_check_threshold (widget,
3442                                                           view->drag_info.start.x,
3443                                                           view->drag_info.start.y,
3444                                                           event->x_root,
3445                                                           event->y_root);
3446                         view->drag_info.in_drag = start;
3447                         view->drag_info.drag_timeout_id = g_timeout_add (10,
3448                                 (GSourceFunc)ev_view_drag_update_momentum, view);
3449                         /* Set 100 to choose how long it takes to build up momentum */
3450                         /* Clear out previous momentum info: */
3451                         for (i = 0; i < DRAG_HISTORY; i++) {
3452                                 view->drag_info.buffer[i].x = event->x;
3453                                 view->drag_info.buffer[i].y = event->y;
3454                         }
3455                         view->drag_info.momentum.x = 0;
3456                         view->drag_info.momentum.y = 0;
3457                 }
3458
3459                 if (view->drag_info.in_drag) {
3460                         int dx, dy;
3461                         gdouble dhadj_value, dvadj_value;
3462
3463                         view->drag_info.buffer[0].x = event->x;
3464                         view->drag_info.buffer[0].y = event->y;
3465
3466                         dx = event->x_root - view->drag_info.start.x;
3467                         dy = event->y_root - view->drag_info.start.y;
3468
3469                         dhadj_value = view->hadjustment->page_size *
3470                                       (gdouble)dx / widget->allocation.width;
3471                         dvadj_value = view->vadjustment->page_size *
3472                                       (gdouble)dy / widget->allocation.height;
3473
3474                         /* clamp scrolling to visible area */
3475                         gtk_adjustment_set_value (view->hadjustment,
3476                                                   MIN(view->drag_info.hadj - dhadj_value,
3477                                                       view->hadjustment->upper -
3478                                                       view->hadjustment->page_size));
3479                         gtk_adjustment_set_value (view->vadjustment,
3480                                                   MIN(view->drag_info.vadj - dvadj_value,
3481                                                       view->vadjustment->upper -
3482                                                       view->vadjustment->page_size));
3483
3484                         return TRUE;
3485                 }
3486
3487                 break;
3488         default:
3489                 ev_view_handle_cursor_over_xy (view, x, y);
3490         }
3491
3492         return FALSE;
3493 }
3494
3495 static gboolean
3496 ev_view_button_release_event (GtkWidget      *widget,
3497                               GdkEventButton *event)
3498 {
3499         EvView *view = EV_VIEW (widget);
3500         EvLink *link = NULL;
3501
3502         view->image_dnd_info.in_drag = FALSE;
3503
3504         if (view->scroll_info.autoscrolling) {
3505                 ev_view_autoscroll_stop (view);
3506                 view->pressed_button = -1;
3507
3508                 return TRUE;
3509         }
3510
3511         if (view->drag_info.in_drag) {
3512                 view->drag_info.release_timeout_id =
3513                         g_timeout_add (20,
3514                                        (GSourceFunc)ev_view_scroll_drag_release, view);
3515         }
3516
3517         if (view->document && !view->drag_info.in_drag && view->pressed_button != 3) {
3518                 link = ev_view_get_link_at_location (view, event->x, event->y);
3519         }
3520
3521         view->drag_info.in_drag = FALSE;
3522
3523         if (view->pressed_button == 2) {
3524                 ev_view_handle_cursor_over_xy (view, event->x, event->y);
3525         }
3526
3527         view->pressed_button = -1;
3528
3529         if (view->selection_scroll_id) {
3530             g_source_remove (view->selection_scroll_id);
3531             view->selection_scroll_id = 0;
3532         }
3533         if (view->selection_update_id) {
3534             g_source_remove (view->selection_update_id);
3535             view->selection_update_id = 0;
3536         }
3537
3538         if (!view->selection_info.in_selection &&
3539             view->selection_info.style != EV_SELECTION_STYLE_GLYPH) {
3540                 compute_selections (view,
3541                                     view->selection_info.style,
3542                                     &(view->selection_info.start),
3543                                     &(view->selection_info.start));
3544         }
3545
3546         if (view->selection_info.selections) {
3547                 clear_link_selected (view);
3548                 ev_view_update_primary_selection (view);
3549
3550                 if (view->selection_info.in_drag) {
3551                         clear_selection (view);
3552                         gtk_widget_queue_draw (widget);
3553                 }
3554
3555                 view->selection_info.in_drag = FALSE;
3556         } else if (link) {
3557                 if (event->button == 2) {
3558                         EvLinkAction    *action;
3559                         EvLinkActionType type;
3560
3561                         action = ev_link_get_action (link);
3562                         if (!action)
3563                                 return FALSE;
3564
3565                         type = ev_link_action_get_action_type (action);
3566                         if (type == EV_LINK_ACTION_TYPE_GOTO_DEST) {
3567                                 g_signal_emit (view,
3568                                                signals[SIGNAL_EXTERNAL_LINK],
3569                                                0, action);
3570                         }
3571                 } else {
3572                         ev_view_handle_link (view, link);
3573                 }
3574         } else if (view->presentation) {
3575                 switch (event->button) {
3576                         case 1:
3577                                 ev_view_next_page (view);
3578                                 return TRUE;
3579                         case 3:
3580                                 ev_view_previous_page (view);
3581                                 return TRUE;
3582                 }
3583         }
3584
3585         return FALSE;
3586 }
3587
3588 /* Goto Window */
3589 /* Cut and paste from gtkwindow.c */
3590 static void
3591 send_focus_change (GtkWidget *widget,
3592                    gboolean   in)
3593 {
3594         GdkEvent *fevent = gdk_event_new (GDK_FOCUS_CHANGE);
3595
3596         g_object_ref (widget);
3597
3598         if (in)
3599                 GTK_WIDGET_SET_FLAGS (widget, GTK_HAS_FOCUS);
3600         else
3601                 GTK_WIDGET_UNSET_FLAGS (widget, GTK_HAS_FOCUS);
3602
3603         fevent->focus_change.type = GDK_FOCUS_CHANGE;
3604         fevent->focus_change.window = g_object_ref (widget->window);
3605         fevent->focus_change.in = in;
3606
3607         gtk_widget_event (widget, fevent);
3608
3609         g_object_notify (G_OBJECT (widget), "has-focus");
3610
3611         g_object_unref (widget);
3612         gdk_event_free (fevent);
3613 }
3614
3615 static void
3616 ev_view_goto_window_hide (EvView *view)
3617 {
3618         /* send focus-in event */
3619         send_focus_change (view->goto_entry, FALSE);
3620         gtk_widget_hide (view->goto_window);
3621         gtk_entry_set_text (GTK_ENTRY (view->goto_entry), "");
3622 }
3623
3624 static gboolean
3625 ev_view_goto_window_delete_event (GtkWidget   *widget,
3626                                   GdkEventAny *event,
3627                                   EvView      *view)
3628 {
3629         ev_view_goto_window_hide (view);
3630
3631         return TRUE;
3632 }
3633
3634 static gboolean
3635 key_is_numeric (guint keyval)
3636 {
3637         return ((keyval >= GDK_0 && keyval <= GDK_9) ||
3638                 (keyval >= GDK_KP_0 && keyval <= GDK_KP_9));
3639 }
3640
3641 static gboolean
3642 ev_view_goto_window_key_press_event (GtkWidget   *widget,
3643                                      GdkEventKey *event,
3644                                      EvView      *view)
3645 {
3646         switch (event->keyval) {
3647                 case GDK_Escape:
3648                 case GDK_Tab:
3649                 case GDK_KP_Tab:
3650                 case GDK_ISO_Left_Tab:
3651                         ev_view_goto_window_hide (view);
3652                         return TRUE;
3653                 case GDK_Return:
3654                 case GDK_KP_Enter:
3655                 case GDK_ISO_Enter:
3656                 case GDK_BackSpace:
3657                 case GDK_Delete:
3658                         return FALSE;
3659                 default:
3660                         if (!key_is_numeric (event->keyval))
3661                                 return TRUE;
3662         }
3663
3664         return FALSE;
3665 }
3666
3667 static gboolean
3668 ev_view_goto_window_button_press_event (GtkWidget      *widget,
3669                                         GdkEventButton *event,
3670                                         EvView         *view)
3671 {
3672         ev_view_goto_window_hide (view);
3673
3674         return TRUE;
3675 }
3676
3677 static void
3678 ev_view_goto_entry_activate (GtkEntry *entry,
3679                              EvView   *view)
3680 {
3681         const gchar *text;
3682         gint         page;
3683
3684         text = gtk_entry_get_text (entry);
3685         page = atoi (text) - 1;
3686
3687         ev_view_goto_window_hide (view);
3688
3689         if (page >= 0 &&
3690             page < ev_page_cache_get_n_pages (view->page_cache))
3691                 ev_page_cache_set_current_page (view->page_cache, page);
3692 }
3693
3694 static void
3695 ev_view_goto_window_create (EvView *view)
3696 {
3697         GtkWidget *frame, *hbox, *toplevel, *label;
3698
3699         toplevel = gtk_widget_get_toplevel (GTK_WIDGET (view));
3700
3701         if (view->goto_window) {
3702                 if (GTK_WINDOW (toplevel)->group)
3703                         gtk_window_group_add_window (GTK_WINDOW (toplevel)->group,
3704                                                      GTK_WINDOW (view->goto_window));
3705                 else if (GTK_WINDOW (view->goto_window)->group)
3706                         gtk_window_group_remove_window (GTK_WINDOW (view->goto_window)->group,
3707                                                         GTK_WINDOW (view->goto_window));
3708                 return;
3709         }
3710
3711         view->goto_window = gtk_window_new (GTK_WINDOW_POPUP);
3712         gtk_window_set_screen (GTK_WINDOW (view->goto_window),
3713                                gtk_widget_get_screen (GTK_WIDGET (view)));
3714
3715         if (GTK_WINDOW (toplevel)->group)
3716                 gtk_window_group_add_window (GTK_WINDOW (toplevel)->group,
3717                                              GTK_WINDOW (view->goto_window));
3718
3719         gtk_window_set_modal (GTK_WINDOW (view->goto_window), TRUE);
3720
3721         g_signal_connect (view->goto_window, "delete_event",
3722                           G_CALLBACK (ev_view_goto_window_delete_event),
3723                           view);
3724         g_signal_connect (view->goto_window, "key_press_event",
3725                           G_CALLBACK (ev_view_goto_window_key_press_event),
3726                           view);
3727         g_signal_connect (view->goto_window, "button_press_event",
3728                           G_CALLBACK (ev_view_goto_window_button_press_event),
3729                           view);
3730
3731         frame = gtk_frame_new (NULL);
3732         gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_ETCHED_IN);
3733         gtk_container_add (GTK_CONTAINER (view->goto_window), frame);
3734         gtk_widget_show (frame);
3735
3736         hbox = gtk_hbox_new (FALSE, 0);
3737         gtk_container_set_border_width (GTK_CONTAINER (hbox), 3);
3738         gtk_container_add (GTK_CONTAINER (frame), hbox);
3739         gtk_widget_show (hbox);
3740
3741         label = gtk_label_new(_("Jump to page:"));
3742         gtk_box_pack_start (GTK_BOX (hbox), label, TRUE, TRUE, 3);
3743         gtk_widget_show (label);
3744         gtk_widget_realize (label);
3745
3746         view->goto_entry = gtk_entry_new ();
3747         g_signal_connect (view->goto_entry, "activate",
3748                           G_CALLBACK (ev_view_goto_entry_activate),
3749                           view);
3750         gtk_box_pack_start (GTK_BOX (hbox), view->goto_entry, TRUE, TRUE, 0);
3751         gtk_widget_show (view->goto_entry);
3752         gtk_widget_realize (view->goto_entry);
3753 }
3754
3755 static void
3756 ev_view_goto_entry_grab_focus (EvView *view)
3757 {
3758         GtkWidgetClass *entry_parent_class;
3759
3760         entry_parent_class = g_type_class_peek_parent (GTK_ENTRY_GET_CLASS (view->goto_entry));
3761         (entry_parent_class->grab_focus) (view->goto_entry);
3762
3763         send_focus_change (view->goto_entry, TRUE);
3764 }
3765
3766 static void
3767 ev_view_goto_window_send_key_event (EvView   *view,
3768                                     GdkEvent *event)
3769 {
3770         GdkEventKey *new_event;
3771         GdkScreen   *screen;
3772
3773         /* Move goto window off screen */
3774         screen = gtk_widget_get_screen (GTK_WIDGET (view));
3775         gtk_window_move (GTK_WINDOW (view->goto_window),
3776                          gdk_screen_get_width (screen) + 1,
3777                          gdk_screen_get_height (screen) + 1);
3778         gtk_widget_show (view->goto_window);
3779
3780         new_event = (GdkEventKey *) gdk_event_copy (event);
3781         g_object_unref (new_event->window);
3782         new_event->window = g_object_ref (view->goto_window->window);
3783         gtk_widget_realize (view->goto_window);
3784
3785         gtk_widget_event (view->goto_window, (GdkEvent *)new_event);
3786         gdk_event_free ((GdkEvent *)new_event);
3787         gtk_widget_hide (view->goto_window);
3788 }
3789
3790 static gboolean
3791 ev_view_key_press_event (GtkWidget   *widget,
3792                          GdkEventKey *event)
3793 {
3794         EvView *view = EV_VIEW (widget);
3795         EvPresentationState current;
3796
3797         if (!view->document)
3798                 return FALSE;
3799
3800         if (!GTK_WIDGET_HAS_FOCUS (widget)) {
3801                 /* Forward key events to current focused window child */
3802                 if (view->window_child_focus) {
3803                         GdkEventKey *new_event;
3804                         gboolean     handled;
3805
3806                         new_event = (GdkEventKey *) gdk_event_copy ((GdkEvent *)event);
3807                         g_object_unref (new_event->window);
3808                         new_event->window = g_object_ref (view->window_child_focus->window->window);
3809                         gtk_widget_realize (view->window_child_focus->window);
3810                         handled = gtk_widget_event (view->window_child_focus->window, (GdkEvent *)new_event);
3811                         gdk_event_free ((GdkEvent *)new_event);
3812
3813                         return handled;
3814                 }
3815
3816                 return FALSE;
3817         }
3818
3819         if (!view->presentation ||
3820             view->presentation_state == EV_PRESENTATION_END)
3821                 return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
3822
3823
3824         current = view->presentation_state;
3825
3826         switch (event->keyval) {
3827                 case GDK_b:
3828                 case GDK_B:
3829                 case GDK_period:
3830                 case GDK_KP_Decimal:
3831                         view->presentation_state =
3832                                 (view->presentation_state == EV_PRESENTATION_BLACK) ?
3833                                 EV_PRESENTATION_NORMAL : EV_PRESENTATION_BLACK;
3834                         break;
3835                 case GDK_w:
3836                 case GDK_W:
3837                         view->presentation_state =
3838                                 (view->presentation_state == EV_PRESENTATION_WHITE) ?
3839                                 EV_PRESENTATION_NORMAL : EV_PRESENTATION_WHITE;
3840                         break;
3841                 default:
3842                         if (view->presentation_state == EV_PRESENTATION_BLACK ||
3843                             view->presentation_state == EV_PRESENTATION_WHITE) {
3844                                 view->presentation_state = EV_PRESENTATION_NORMAL;
3845                         }
3846         }
3847
3848         if (current == view->presentation_state) {
3849                 if (ev_page_cache_get_n_pages (view->page_cache) > 1 &&
3850                     key_is_numeric (event->keyval)) {
3851                         gint x, y;
3852
3853                         ev_view_goto_window_create (view);
3854                         ev_view_goto_window_send_key_event (view, (GdkEvent *)event);
3855                         gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
3856                         gtk_window_move (GTK_WINDOW (view->goto_window), x, y);
3857                         gtk_widget_show (view->goto_window);
3858                         ev_view_goto_entry_grab_focus (view);
3859
3860                         return TRUE;
3861                 }
3862
3863                 return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
3864         }
3865
3866         switch (view->presentation_state) {
3867                 case EV_PRESENTATION_NORMAL:
3868                 case EV_PRESENTATION_BLACK:
3869                         gdk_window_set_background (view->layout.bin_window,
3870                                                    &widget->style->black);
3871                         break;
3872                 case EV_PRESENTATION_WHITE:
3873                         gdk_window_set_background (view->layout.bin_window,
3874                                                    &widget->style->white);
3875                         break;
3876                 default:
3877                         return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
3878         }
3879
3880         gtk_widget_queue_draw (widget);
3881         return TRUE;
3882 }
3883
3884 static gint
3885 ev_view_focus_in (GtkWidget     *widget,
3886                   GdkEventFocus *event)
3887 {
3888         if (EV_VIEW (widget)->pixbuf_cache)
3889                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
3890         gtk_widget_queue_draw (widget);
3891
3892         return FALSE;
3893 }
3894
3895 static gint
3896 ev_view_focus_out (GtkWidget     *widget,
3897                      GdkEventFocus *event)
3898 {
3899         if (EV_VIEW (widget)->goto_window)
3900                 ev_view_goto_window_hide (EV_VIEW (widget));
3901
3902         if (EV_VIEW (widget)->pixbuf_cache)
3903                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
3904         gtk_widget_queue_draw (widget);
3905
3906         return FALSE;
3907 }
3908
3909 static gboolean
3910 ev_view_leave_notify_event (GtkWidget *widget, GdkEventCrossing   *event)
3911 {
3912         EvView *view = EV_VIEW (widget);
3913
3914         if (view->cursor != EV_VIEW_CURSOR_NORMAL)
3915                 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
3916
3917         return FALSE;
3918 }
3919
3920 static gboolean
3921 ev_view_enter_notify_event (GtkWidget *widget, GdkEventCrossing   *event)
3922 {
3923         EvView *view = EV_VIEW (widget);
3924
3925         ev_view_handle_cursor_over_xy (view, event->x, event->y);
3926
3927         return FALSE;
3928 }
3929
3930 static void
3931 ev_view_style_set (GtkWidget *widget,
3932                    GtkStyle  *old_style)
3933 {
3934         if (EV_VIEW (widget)->pixbuf_cache)
3935                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
3936
3937         GTK_WIDGET_CLASS (ev_view_parent_class)->style_set (widget, old_style);
3938 }
3939
3940 /*** Drawing ***/
3941
3942 static guint32
3943 ev_gdk_color_to_rgb (const GdkColor *color)
3944 {
3945   guint32 result;
3946   result = (0xff0000 | (color->red & 0xff00));
3947   result <<= 8;
3948   result |= ((color->green & 0xff00) | (color->blue >> 8));
3949   return result;
3950 }
3951
3952 static void
3953 draw_rubberband (GtkWidget *widget, GdkWindow *window,
3954                  const GdkRectangle *rect, guchar alpha)
3955 {
3956         GdkGC *gc;
3957         GdkPixbuf *pixbuf;
3958         GdkColor *fill_color_gdk;
3959         guint fill_color;
3960
3961         fill_color_gdk = gdk_color_copy (&GTK_WIDGET (widget)->style->base[GTK_STATE_SELECTED]);
3962         fill_color = ev_gdk_color_to_rgb (fill_color_gdk) << 8 | alpha;
3963
3964         pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE, 8,
3965                                  rect->width, rect->height);
3966         gdk_pixbuf_fill (pixbuf, fill_color);
3967
3968         gdk_draw_pixbuf (window, NULL, pixbuf,
3969                          0, 0,
3970                          rect->x - EV_VIEW (widget)->scroll_x, rect->y - EV_VIEW (widget)->scroll_y,
3971                          rect->width, rect->height,
3972                          GDK_RGB_DITHER_NONE,
3973                          0, 0);
3974
3975         g_object_unref (pixbuf);
3976
3977         gc = gdk_gc_new (window);
3978         gdk_gc_set_rgb_fg_color (gc, fill_color_gdk);
3979         gdk_draw_rectangle (window, gc, FALSE,
3980                             rect->x - EV_VIEW (widget)->scroll_x, rect->y - EV_VIEW (widget)->scroll_y,
3981                             rect->width - 1,
3982                             rect->height - 1);
3983         g_object_unref (gc);
3984
3985         gdk_color_free (fill_color_gdk);
3986 }
3987
3988
3989 static void
3990 highlight_find_results (EvView *view, int page)
3991 {
3992         gint i, n_results = 0;
3993
3994         n_results = ev_view_find_get_n_results (view, page);
3995
3996         for (i = 0; i < n_results; i++) {
3997                 EvRectangle *rectangle;
3998                 GdkRectangle view_rectangle;
3999                 guchar alpha;
4000
4001                 if (i == view->find_result && page == view->current_page) {
4002                         alpha = 0x90;
4003                 } else {
4004                         alpha = 0x20;
4005                 }
4006
4007                 rectangle = ev_view_find_get_result (view, page, i);
4008                 doc_rect_to_view_rect (view, page, rectangle, &view_rectangle);
4009                 draw_rubberband (GTK_WIDGET (view), view->layout.bin_window,
4010                                  &view_rectangle, alpha);
4011         }
4012 }
4013
4014 static void
4015 draw_loading_text (EvView       *view,
4016                    GdkRectangle *page_area,
4017                    GdkRectangle *expose_area)
4018 {
4019         cairo_t *cr;
4020         gint     width, height;
4021
4022         if (!view->loading_text) {
4023                 const gchar *loading_text = _("Loading...");
4024                 PangoLayout *layout;
4025                 PangoFontDescription *font_desc;
4026                 PangoRectangle logical_rect;
4027                 gint target_width;
4028                 gdouble real_scale;
4029
4030                 ev_document_fc_mutex_lock ();
4031
4032                 layout = gtk_widget_create_pango_layout (GTK_WIDGET (view), loading_text);
4033
4034                 font_desc = pango_font_description_new ();
4035
4036                 /* We set the font to be 10 points, get the size, and scale appropriately */
4037                 pango_font_description_set_size (font_desc, 10 * PANGO_SCALE);
4038                 pango_layout_set_font_description (layout, font_desc);
4039                 pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
4040
4041                 target_width = MAX (page_area->width / 2, 1);
4042                 real_scale = ((double)target_width / (double) logical_rect.width) * (PANGO_SCALE * 10);
4043                 pango_font_description_set_size (font_desc, (int)real_scale);
4044                 pango_layout_set_font_description (layout, font_desc);
4045                 pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
4046
4047                 view->loading_text = cairo_image_surface_create (CAIRO_FORMAT_ARGB32,
4048                                                                  logical_rect.width,
4049                                                                  logical_rect.height);
4050                 cr = cairo_create (view->loading_text);
4051                 cairo_set_source_rgb (cr,
4052                                       155 / (double)255,
4053                                       155 / (double)255,
4054                                       155 / (double)255);
4055                 pango_cairo_show_layout (cr, layout);
4056                 cairo_destroy (cr);
4057
4058                 pango_font_description_free (font_desc);
4059                 g_object_unref (layout);
4060
4061                 ev_document_fc_mutex_unlock ();
4062         }
4063
4064         width = (page_area->width - cairo_image_surface_get_width (view->loading_text)) / 2;
4065         height = (page_area->height - cairo_image_surface_get_height (view->loading_text)) / 2;
4066
4067         cr = gdk_cairo_create (view->layout.bin_window);
4068         cairo_translate (cr,
4069                          page_area->x + width,
4070                          page_area->y + height);
4071         cairo_set_source_surface (cr, view->loading_text, 0, 0);
4072         cairo_paint (cr);
4073         cairo_destroy (cr);
4074 }
4075
4076 static void
4077 draw_one_page (EvView       *view,
4078                gint          page,
4079                cairo_t      *cr,
4080                GdkRectangle *page_area,
4081                GtkBorder    *border,
4082                GdkRectangle *expose_area,
4083                gboolean     *page_ready)
4084 {
4085         GdkRectangle overlap;
4086         GdkRectangle real_page_area;
4087
4088         g_assert (view->document);
4089
4090         if (! gdk_rectangle_intersect (page_area, expose_area, &overlap))
4091                 return;
4092
4093         /* Render the document itself */
4094         real_page_area = *page_area;
4095
4096         real_page_area.x += border->left;
4097         real_page_area.y += border->top;
4098         real_page_area.width -= (border->left + border->right);
4099         real_page_area.height -= (border->top + border->bottom);
4100         *page_ready = TRUE;
4101
4102         if (!view->presentation) {
4103                 gint current_page;
4104
4105                 current_page = ev_page_cache_get_current_page (view->page_cache);
4106                 ev_document_misc_paint_one_page (view->layout.bin_window,
4107                                                  GTK_WIDGET (view),
4108                                                  page_area, border,
4109                                                  page == current_page);
4110         }
4111
4112         if (gdk_rectangle_intersect (&real_page_area, expose_area, &overlap)) {
4113                 gint             width, height;
4114                 gint             page_width, page_height;
4115                 cairo_surface_t *page_surface = NULL;
4116                 gint             selection_width, selection_height;
4117                 cairo_surface_t *selection_surface = NULL;
4118
4119                 page_surface = ev_pixbuf_cache_get_surface (view->pixbuf_cache, page);
4120
4121                 if (!page_surface) {
4122                         if (!view->presentation) {
4123                                 draw_loading_text (view,
4124                                                    &real_page_area,
4125                                                    expose_area);
4126                         }
4127
4128                         *page_ready = FALSE;
4129
4130                         return;
4131                 }
4132
4133                 ev_page_cache_get_size (view->page_cache,
4134                                         page, view->rotation,
4135                                         view->scale,
4136                                         &width, &height);
4137
4138                 page_width = cairo_image_surface_get_width (page_surface);
4139                 page_height = cairo_image_surface_get_height (page_surface);
4140
4141                 cairo_save (cr);
4142                 cairo_translate (cr, overlap.x, overlap.y);
4143
4144                 if (width != page_width || height != page_height) {
4145                         cairo_pattern_set_filter (cairo_get_source (cr),
4146                                                   CAIRO_FILTER_FAST);
4147                         cairo_scale (cr,
4148                                      (gdouble)width / page_width,
4149                                      (gdouble)height / page_height);
4150                 }
4151
4152                 cairo_surface_set_device_offset (page_surface,
4153                                                  overlap.x - real_page_area.x,
4154                                                  overlap.y - real_page_area.y);
4155                 cairo_set_source_surface (cr, page_surface, 0, 0);
4156                 cairo_paint (cr);
4157                 cairo_restore (cr);
4158
4159                 /* Get the selection pixbuf iff we have something to draw */
4160                 if (find_selection_for_page (view, page) &&
4161                     view->selection_mode == EV_VIEW_SELECTION_TEXT) {
4162                         selection_surface =
4163                                 ev_pixbuf_cache_get_selection_surface (view->pixbuf_cache,
4164                                                                        page,
4165                                                                        view->scale,
4166                                                                        NULL);
4167                 }
4168
4169                 if (!selection_surface) {
4170                         return;
4171                 }
4172
4173                 selection_width = cairo_image_surface_get_width (selection_surface);
4174                 selection_height = cairo_image_surface_get_height (selection_surface);
4175
4176                 cairo_save (cr);
4177                 cairo_translate (cr, overlap.x, overlap.y);
4178
4179                 if (width != selection_width || height != selection_height) {
4180                         cairo_pattern_set_filter (cairo_get_source (cr),
4181                                                   CAIRO_FILTER_FAST);
4182                         cairo_scale (cr,
4183                                      (gdouble)width / selection_width,
4184                                      (gdouble)height / selection_height);
4185                 }
4186
4187                 cairo_surface_set_device_offset (selection_surface,
4188                                                  overlap.x - real_page_area.x,
4189                                                  overlap.y - real_page_area.y);
4190                 cairo_set_source_surface (cr, selection_surface, 0, 0);
4191                 cairo_paint (cr);
4192                 cairo_restore (cr);
4193         }
4194 }
4195
4196 /*** GObject functions ***/
4197
4198 static void
4199 ev_view_finalize (GObject *object)
4200 {
4201         EvView *view = EV_VIEW (object);
4202
4203         clear_selection (view);
4204         clear_link_selected (view);
4205
4206         if (view->image_dnd_info.image)
4207                 g_object_unref (view->image_dnd_info.image);
4208         view->image_dnd_info.image = NULL;
4209
4210         G_OBJECT_CLASS (ev_view_parent_class)->finalize (object);
4211 }
4212
4213 static void
4214 ev_view_destroy (GtkObject *object)
4215 {
4216         EvView *view = EV_VIEW (object);
4217
4218         if (view->document) {
4219                 g_object_unref (view->document);
4220                 view->document = NULL;
4221         }
4222
4223         if (view->pixbuf_cache) {
4224                 g_object_unref (view->pixbuf_cache);
4225                 view->pixbuf_cache = NULL;
4226         }
4227
4228         if (view->goto_window) {
4229                 gtk_widget_destroy (view->goto_window);
4230                 view->goto_window = NULL;
4231                 view->goto_entry = NULL;
4232         }
4233
4234         ev_view_window_children_free (view);
4235
4236         if (view->selection_scroll_id) {
4237             g_source_remove (view->selection_scroll_id);
4238             view->selection_scroll_id = 0;
4239         }
4240
4241         if (view->selection_update_id) {
4242             g_source_remove (view->selection_update_id);
4243             view->selection_update_id = 0;
4244         }
4245
4246         if (view->loading_text) {
4247                 cairo_surface_destroy (view->loading_text);
4248                 view->loading_text = NULL;
4249         }
4250
4251         if (view->scroll_info.timeout_id) {
4252             g_source_remove (view->scroll_info.timeout_id);
4253             view->scroll_info.timeout_id = 0;
4254         }
4255
4256         if (view->drag_info.drag_timeout_id) {
4257                 g_source_remove (view->drag_info.drag_timeout_id);
4258                 view->drag_info.drag_timeout_id = 0;
4259         }
4260
4261         if (view->drag_info.release_timeout_id) {
4262                 g_source_remove (view->drag_info.release_timeout_id);
4263                 view->drag_info.release_timeout_id = 0;
4264         }
4265
4266         ev_view_presentation_transition_stop (view);
4267
4268         ev_view_set_scroll_adjustments (GTK_LAYOUT (view), NULL, NULL);
4269
4270         GTK_OBJECT_CLASS (ev_view_parent_class)->destroy (object);
4271 }
4272
4273 static void
4274 ev_view_set_property (GObject      *object,
4275                       guint         prop_id,
4276                       const GValue *value,
4277                       GParamSpec   *pspec)
4278 {
4279         EvView *view = EV_VIEW (object);
4280
4281         switch (prop_id) {
4282                 case PROP_CONTINUOUS:
4283                         ev_view_set_continuous (view, g_value_get_boolean (value));
4284                         break;
4285                 case PROP_DUAL_PAGE:
4286                         ev_view_set_dual_page (view, g_value_get_boolean (value));
4287                         break;
4288                 case PROP_FULLSCREEN:
4289                         ev_view_set_fullscreen (view, g_value_get_boolean (value));
4290                         break;
4291                 case PROP_PRESENTATION:
4292                         ev_view_set_presentation (view, g_value_get_boolean (value));
4293                         break;
4294                 case PROP_SIZING_MODE:
4295                         ev_view_set_sizing_mode (view, g_value_get_enum (value));
4296                         break;
4297                 case PROP_ZOOM:
4298                         ev_view_set_zoom (view, g_value_get_double (value), FALSE);
4299                         break;
4300                 case PROP_ROTATION:
4301                         ev_view_set_rotation (view, g_value_get_int (value));
4302                         break;
4303                 default:
4304                         G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
4305         }
4306 }
4307
4308 static AtkObject *
4309 ev_view_get_accessible (GtkWidget *widget)
4310 {
4311         static gboolean first_time = TRUE;
4312
4313         if (first_time) {
4314                 AtkObjectFactory *factory;
4315                 AtkRegistry *registry;
4316                 GType derived_type;
4317                 GType derived_atk_type;
4318
4319                 /*
4320                  * Figure out whether accessibility is enabled by looking at the
4321                  * type of the accessible object which would be created for
4322                  * the parent type of EvView.
4323                  */
4324                 derived_type = g_type_parent (EV_TYPE_VIEW);
4325
4326                 registry = atk_get_default_registry ();
4327                 factory = atk_registry_get_factory (registry,
4328                                                     derived_type);
4329                 derived_atk_type = atk_object_factory_get_accessible_type (factory);
4330                 if (g_type_is_a (derived_atk_type, GTK_TYPE_ACCESSIBLE))
4331                         atk_registry_set_factory_type (registry,
4332                                                        EV_TYPE_VIEW,
4333                                                        ev_view_accessible_factory_get_type ());
4334                 first_time = FALSE;
4335         }
4336         return GTK_WIDGET_CLASS (ev_view_parent_class)->get_accessible (widget);
4337 }
4338
4339 static void
4340 ev_view_get_property (GObject *object,
4341                       guint prop_id,
4342                       GValue *value,
4343                       GParamSpec *pspec)
4344 {
4345         EvView *view = EV_VIEW (object);
4346
4347         switch (prop_id) {
4348                 case PROP_CONTINUOUS:
4349                         g_value_set_boolean (value, view->continuous);
4350                         break;
4351                 case PROP_DUAL_PAGE:
4352                         g_value_set_boolean (value, view->dual_page);
4353                         break;
4354                 case PROP_FULLSCREEN:
4355                         g_value_set_boolean (value, view->fullscreen);
4356                         break;
4357                 case PROP_PRESENTATION:
4358                         g_value_set_boolean (value, view->presentation);
4359                         break;
4360                 case PROP_SIZING_MODE:
4361                         g_value_set_enum (value, view->sizing_mode);
4362                         break;
4363                 case PROP_ZOOM:
4364                         g_value_set_double (value, view->scale);
4365                         break;
4366                 case PROP_ROTATION:
4367                         g_value_set_int (value, view->rotation);
4368                         break;
4369                 case PROP_HAS_SELECTION:
4370                         g_value_set_boolean (value,
4371                                              view->selection_info.selections != NULL);
4372                         break;
4373                 default:
4374                         G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
4375         }
4376 }
4377
4378 static void
4379 ev_view_class_init (EvViewClass *class)
4380 {
4381         GObjectClass *object_class = G_OBJECT_CLASS (class);
4382         GtkObjectClass *gtk_object_class = GTK_OBJECT_CLASS (class);
4383         GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
4384         GtkLayoutClass *layout_class = GTK_LAYOUT_CLASS (class);
4385         GtkBindingSet *binding_set;
4386
4387         object_class->finalize = ev_view_finalize;
4388         object_class->set_property = ev_view_set_property;
4389         object_class->get_property = ev_view_get_property;
4390
4391         widget_class->expose_event = ev_view_expose_event;
4392         widget_class->button_press_event = ev_view_button_press_event;
4393         widget_class->motion_notify_event = ev_view_motion_notify_event;
4394         widget_class->button_release_event = ev_view_button_release_event;
4395         widget_class->key_press_event = ev_view_key_press_event;
4396         widget_class->focus_in_event = ev_view_focus_in;
4397         widget_class->focus_out_event = ev_view_focus_out;
4398         widget_class->get_accessible = ev_view_get_accessible;
4399         widget_class->size_request = ev_view_size_request;
4400         widget_class->size_allocate = ev_view_size_allocate;
4401         widget_class->realize = ev_view_realize;
4402         widget_class->scroll_event = ev_view_scroll_event;
4403         widget_class->enter_notify_event = ev_view_enter_notify_event;
4404         widget_class->leave_notify_event = ev_view_leave_notify_event;
4405         widget_class->style_set = ev_view_style_set;
4406         widget_class->drag_data_get = ev_view_drag_data_get;
4407         widget_class->drag_motion = ev_view_drag_motion;
4408         widget_class->popup_menu = ev_view_popup_menu;
4409         widget_class->query_tooltip = ev_view_query_tooltip;
4410
4411         gtk_object_class->destroy = ev_view_destroy;
4412
4413         layout_class->set_scroll_adjustments = ev_view_set_scroll_adjustments;
4414
4415         class->binding_activated = ev_view_scroll;
4416
4417         signals[SIGNAL_BINDING_ACTIVATED] = g_signal_new ("binding_activated",
4418                          G_TYPE_FROM_CLASS (object_class),
4419                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
4420                          G_STRUCT_OFFSET (EvViewClass, binding_activated),
4421                          NULL, NULL,
4422                          ev_view_marshal_VOID__ENUM_BOOLEAN,
4423                          G_TYPE_NONE, 2,
4424                          GTK_TYPE_SCROLL_TYPE,
4425                          G_TYPE_BOOLEAN);
4426
4427         signals[SIGNAL_ZOOM_INVALID] = g_signal_new ("zoom-invalid",
4428                          G_TYPE_FROM_CLASS (object_class),
4429                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
4430                          G_STRUCT_OFFSET (EvViewClass, zoom_invalid),
4431                          NULL, NULL,
4432                          g_cclosure_marshal_VOID__VOID,
4433                          G_TYPE_NONE, 0, G_TYPE_NONE);
4434         signals[SIGNAL_HANDLE_LINK] = g_signal_new ("handle-link",
4435                          G_TYPE_FROM_CLASS (object_class),
4436                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
4437                          G_STRUCT_OFFSET (EvViewClass, handle_link),
4438                          NULL, NULL,
4439                          g_cclosure_marshal_VOID__OBJECT,
4440                          G_TYPE_NONE, 1,
4441                          G_TYPE_OBJECT);
4442         signals[SIGNAL_EXTERNAL_LINK] = g_signal_new ("external-link",
4443                          G_TYPE_FROM_CLASS (object_class),
4444                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
4445                          G_STRUCT_OFFSET (EvViewClass, external_link),
4446                          NULL, NULL,
4447                          g_cclosure_marshal_VOID__OBJECT,
4448                          G_TYPE_NONE, 1,
4449                          G_TYPE_OBJECT);
4450         signals[SIGNAL_POPUP_MENU] = g_signal_new ("popup",
4451                          G_TYPE_FROM_CLASS (object_class),
4452                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
4453                          G_STRUCT_OFFSET (EvViewClass, popup_menu),
4454                          NULL, NULL,
4455                          g_cclosure_marshal_VOID__OBJECT,
4456                          G_TYPE_NONE, 1,
4457                          G_TYPE_OBJECT);
4458
4459
4460         g_object_class_install_property (object_class,
4461                                          PROP_CONTINUOUS,
4462                                          g_param_spec_boolean ("continuous",
4463                                                                "Continuous",
4464                                                                "Continuous scrolling mode",
4465                                                                TRUE,
4466                                                                G_PARAM_READWRITE));
4467
4468         g_object_class_install_property (object_class,
4469                                          PROP_DUAL_PAGE,
4470                                          g_param_spec_boolean ("dual-page",
4471                                                                "Dual Page",
4472                                                                "Two pages visible at once",
4473                                                                FALSE,
4474                                                                G_PARAM_READWRITE));
4475         g_object_class_install_property (object_class,
4476                                          PROP_FULLSCREEN,
4477                                          g_param_spec_boolean ("fullscreen",
4478                                                                "Full Screen",
4479                                                                "Draw page in a fullscreen fashion",
4480                                                                FALSE,
4481                                                                G_PARAM_READWRITE));
4482         g_object_class_install_property (object_class,
4483                                          PROP_PRESENTATION,
4484                                          g_param_spec_boolean ("presentation",
4485                                                                "Presentation",
4486                                                                "Draw page in presentation mode",
4487                                                                TRUE,
4488                                                                G_PARAM_READWRITE));
4489
4490         g_object_class_install_property (object_class,
4491                                          PROP_SIZING_MODE,
4492                                          g_param_spec_enum ("sizing-mode",
4493                                                             "Sizing Mode",
4494                                                             "Sizing Mode",
4495                                                             EV_TYPE_SIZING_MODE,
4496                                                             EV_SIZING_FIT_WIDTH,
4497                                                             G_PARAM_READWRITE));
4498
4499         g_object_class_install_property (object_class,
4500                                          PROP_ZOOM,
4501                                          g_param_spec_double ("zoom",
4502                                                               "Zoom factor",
4503                                                               "Zoom factor",
4504                                                               0,
4505                                                               G_MAXDOUBLE,
4506                                                               1.0,
4507                                                               G_PARAM_READWRITE));
4508         g_object_class_install_property (object_class,
4509                                          PROP_ROTATION,
4510                                          g_param_spec_double ("rotation",
4511                                                               "Rotation",
4512                                                               "Rotation",
4513                                                               0,
4514                                                               360,
4515                                                               0,
4516                                                               G_PARAM_READWRITE));
4517         g_object_class_install_property (object_class,
4518                                          PROP_HAS_SELECTION,
4519                                          g_param_spec_boolean ("has-selection",
4520                                                                "Has selection",
4521                                                                "The view has selections",
4522                                                                FALSE,
4523                                                                G_PARAM_READABLE));
4524
4525         binding_set = gtk_binding_set_by_class (class);
4526
4527         add_scroll_binding_keypad (binding_set, GDK_Left,  0, GTK_SCROLL_STEP_BACKWARD, TRUE);
4528         add_scroll_binding_keypad (binding_set, GDK_Right, 0, GTK_SCROLL_STEP_FORWARD,  TRUE);
4529         add_scroll_binding_keypad (binding_set, GDK_Left,  GDK_MOD1_MASK, GTK_SCROLL_STEP_DOWN, TRUE);
4530         add_scroll_binding_keypad (binding_set, GDK_Right, GDK_MOD1_MASK, GTK_SCROLL_STEP_UP,  TRUE);
4531         add_scroll_binding_keypad (binding_set, GDK_Up,    0, GTK_SCROLL_STEP_BACKWARD, FALSE);
4532         add_scroll_binding_keypad (binding_set, GDK_Down,  0, GTK_SCROLL_STEP_FORWARD,  FALSE);
4533         add_scroll_binding_keypad (binding_set, GDK_Up,    GDK_MOD1_MASK, GTK_SCROLL_STEP_DOWN, FALSE);
4534         add_scroll_binding_keypad (binding_set, GDK_Down,  GDK_MOD1_MASK, GTK_SCROLL_STEP_UP,  FALSE);
4535         gtk_binding_entry_add_signal (binding_set, GDK_H, 0, "binding_activated", 2, GTK_TYPE_SCROLL_TYPE,
4536                                       GTK_SCROLL_STEP_BACKWARD, G_TYPE_BOOLEAN, TRUE);
4537         gtk_binding_entry_add_signal (binding_set, GDK_J, 0, "binding_activated", 2, GTK_TYPE_SCROLL_TYPE,
4538                                       GTK_SCROLL_STEP_FORWARD, G_TYPE_BOOLEAN, FALSE);
4539         gtk_binding_entry_add_signal (binding_set, GDK_K, 0, "binding_activated", 2, GTK_TYPE_SCROLL_TYPE,
4540                                       GTK_SCROLL_STEP_BACKWARD, G_TYPE_BOOLEAN, FALSE);
4541         gtk_binding_entry_add_signal (binding_set, GDK_L, 0, "binding_activated", 2, GTK_TYPE_SCROLL_TYPE,
4542                                       GTK_SCROLL_STEP_FORWARD, G_TYPE_BOOLEAN, TRUE);
4543
4544 }
4545
4546 static void
4547 ev_view_init (EvView *view)
4548 {
4549         GTK_WIDGET_SET_FLAGS (view, GTK_CAN_FOCUS);
4550
4551         view->start_page = -1;
4552         view->end_page = -1;
4553         view->spacing = 5;
4554         view->scale = 1.0;
4555         view->current_page = 0;
4556         view->pressed_button = -1;
4557         view->cursor = EV_VIEW_CURSOR_NORMAL;
4558         view->drag_info.in_drag = FALSE;
4559         view->scroll_info.autoscrolling = FALSE;
4560         view->selection_info.selections = NULL;
4561         view->selection_info.in_selection = FALSE;
4562         view->selection_info.in_drag = FALSE;
4563         view->selection_mode = EV_VIEW_SELECTION_TEXT;
4564         view->continuous = TRUE;
4565         view->dual_page = FALSE;
4566         view->presentation = FALSE;
4567         view->presentation_state = EV_PRESENTATION_NORMAL;
4568         view->fullscreen = FALSE;
4569         view->sizing_mode = EV_SIZING_FIT_WIDTH;
4570         view->pending_scroll = SCROLL_TO_KEEP_POSITION;
4571         view->jump_to_find_result = TRUE;
4572         view->highlight_find_results = FALSE;
4573
4574         gtk_layout_set_hadjustment (GTK_LAYOUT (view), NULL);
4575         gtk_layout_set_vadjustment (GTK_LAYOUT (view), NULL);
4576 }
4577
4578 /*** Callbacks ***/
4579
4580 static void
4581 ev_view_change_page (EvView *view,
4582                      gint    new_page,
4583                      gboolean start_transition)
4584 {
4585         gint x, y;
4586
4587         view->current_page = new_page;
4588         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
4589
4590         if (view->presentation && start_transition)
4591                 ev_view_presentation_transition_start (view);
4592
4593         gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
4594         ev_view_handle_cursor_over_xy (view, x, y);
4595
4596         gtk_widget_queue_resize (GTK_WIDGET (view));
4597 }
4598
4599 static void
4600 ev_view_transition_animation_finish (EvTransitionAnimation *animation,
4601                                      EvView                *view)
4602 {
4603         g_object_unref (view->animation);
4604         view->animation = NULL;
4605         ev_view_change_page (view, view->current_page, TRUE);
4606 }
4607
4608 /**
4609  * ev_view_transition_animation_cancel:
4610  * @animation: Animation to finish
4611  * @view: An EvView
4612  *
4613  * Does almost the same as cancel, but without scheduling the transition.
4614  */
4615
4616 static void
4617 ev_view_transition_animation_cancel (EvTransitionAnimation *animation,
4618                                      EvView                *view)
4619 {
4620         g_object_unref (view->animation);
4621         view->animation = NULL;
4622         ev_view_change_page (view, view->current_page, FALSE);
4623 }
4624
4625 static void
4626 ev_view_transition_animation_frame (EvTransitionAnimation *animation,
4627                                     gdouble                progress,
4628                                     EvView                *view)
4629 {
4630         gtk_widget_queue_draw (GTK_WIDGET (view));
4631 }
4632
4633 static void
4634 ev_view_presentation_animation_start (EvView *view,
4635                                       int     new_page)
4636 {
4637         EvTransitionEffect *effect = NULL;
4638         cairo_surface_t *surface;
4639
4640         if (EV_IS_DOCUMENT_TRANSITION (view->document))
4641                 effect = ev_document_transition_get_effect (EV_DOCUMENT_TRANSITION (view->document),
4642                                                             view->current_page);
4643         if (!effect)
4644                 return;
4645
4646         surface = ev_pixbuf_cache_get_surface (view->pixbuf_cache, view->current_page);
4647         view->animation = ev_transition_animation_new (effect);
4648         ev_transition_animation_set_origin_surface (view->animation, surface);
4649
4650         g_signal_connect (view->animation, "frame",
4651                           G_CALLBACK (ev_view_transition_animation_frame), view);
4652         g_signal_connect (view->animation, "finished",
4653                           G_CALLBACK (ev_view_transition_animation_finish), view);
4654 }
4655
4656 static void
4657 job_finished_cb (EvPixbufCache *pixbuf_cache,
4658                  GdkRegion     *region,
4659                  EvView        *view)
4660 {
4661         if (view->animation) {
4662                 cairo_surface_t *surface;
4663
4664                 surface = ev_pixbuf_cache_get_surface (pixbuf_cache, view->current_page);
4665                 ev_transition_animation_set_dest_surface (view->animation, surface);
4666         }
4667
4668         if (region) {
4669                 gdk_window_invalidate_region (view->layout.bin_window,
4670                                               region, TRUE);
4671         } else {
4672                 gtk_widget_queue_draw (GTK_WIDGET (view));
4673         }
4674 }
4675
4676 static void
4677 page_changed_cb (EvPageCache *page_cache,
4678                  int          new_page,
4679                  EvView      *view)
4680 {
4681         if (view->current_page != new_page) {
4682                 if (view->presentation)
4683                         ev_view_presentation_animation_start (view, new_page);
4684
4685                 ev_view_change_page (view, new_page, TRUE);
4686         } else {
4687                 gtk_widget_queue_draw (GTK_WIDGET (view));
4688         }
4689
4690         view->find_result = 0;
4691 }
4692
4693 static void
4694 on_adjustment_value_changed (GtkAdjustment *adjustment,
4695                              EvView        *view)
4696 {
4697         int dx = 0, dy = 0;
4698         gint x, y;
4699         GList *children, *l;
4700
4701         if (! GTK_WIDGET_REALIZED (view))
4702                 return;
4703
4704         if (view->hadjustment) {
4705                 dx = view->scroll_x - (int) view->hadjustment->value;
4706                 view->scroll_x = (int) view->hadjustment->value;
4707         } else {
4708                 view->scroll_x = 0;
4709         }
4710
4711         if (view->vadjustment) {
4712                 dy = view->scroll_y - (int) view->vadjustment->value;
4713                 view->scroll_y = (int) view->vadjustment->value;
4714         } else {
4715                 view->scroll_y = 0;
4716         }
4717
4718         children = gtk_container_get_children (GTK_CONTAINER (view));
4719         for (l = children; l && l->data; l = g_list_next (l)) {
4720                 gint       child_x, child_y;
4721                 GtkWidget *child = (GtkWidget *)l->data;
4722
4723                 gtk_container_child_get (GTK_CONTAINER (view),
4724                                          child,
4725                                          "x", &child_x,
4726                                          "y", &child_y,
4727                                          NULL);
4728                 gtk_layout_move (GTK_LAYOUT (view), child, child_x + dx, child_y + dy);
4729         }
4730         g_list_free (children);
4731
4732         for (l = view->window_children; l && l->data; l = g_list_next (l)) {
4733                 EvViewWindowChild *child;
4734
4735                 child = (EvViewWindowChild *)l->data;
4736
4737                 ev_view_window_child_move (view, child, child->x + dx, child->y + dy);
4738         }
4739
4740         if (view->pending_resize)
4741                 gtk_widget_queue_draw (GTK_WIDGET (view));
4742         else
4743                 gdk_window_scroll (view->layout.bin_window, dx, dy);
4744
4745         gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
4746         ev_view_handle_cursor_over_xy (view, x, y);
4747
4748         if (view->document)
4749                 view_update_range_and_current_page (view);
4750 }
4751
4752 GtkWidget*
4753 ev_view_new (void)
4754 {
4755         GtkWidget *view;
4756
4757         view = g_object_new (EV_TYPE_VIEW, NULL);
4758
4759         return view;
4760 }
4761
4762 static void
4763 setup_caches (EvView *view)
4764 {
4765         view->page_cache = ev_page_cache_get (view->document);
4766         g_signal_connect (view->page_cache, "page-changed", G_CALLBACK (page_changed_cb), view);
4767         view->pixbuf_cache = ev_pixbuf_cache_new (GTK_WIDGET (view), view->document);
4768         g_signal_connect (view->pixbuf_cache, "job-finished", G_CALLBACK (job_finished_cb), view);
4769         page_changed_cb (view->page_cache,
4770                          ev_page_cache_get_current_page (view->page_cache),
4771                          view);
4772 }
4773
4774 static void
4775 clear_caches (EvView *view)
4776 {
4777         if (view->pixbuf_cache) {
4778                 g_object_unref (view->pixbuf_cache);
4779                 view->pixbuf_cache = NULL;
4780         }
4781
4782         if (view->page_cache) {
4783                 view->page_cache = NULL;
4784         }
4785 }
4786
4787 void
4788 ev_view_set_loading (EvView       *view,
4789                      gboolean      loading)
4790 {
4791         view->loading = loading;
4792         gtk_widget_queue_draw (GTK_WIDGET (view));
4793 }
4794
4795 static gboolean
4796 ev_view_autoscroll_cb (EvView *view)
4797 {
4798         gdouble speed, value;
4799
4800         /* If the user stops autoscrolling, autoscrolling will be
4801          * set to false but the timeout will continue; stop the timeout: */
4802         if (!view->scroll_info.autoscrolling) {
4803                 view->scroll_info.timeout_id = 0;
4804                 return FALSE;
4805         }
4806
4807         if (view->scroll_info.last_y > view->scroll_info.start_y &&
4808                 (view->scroll_info.last_y < view->scroll_info.start_y))
4809                 return TRUE;
4810
4811         /* Replace 100 with your speed of choice: The lower the faster.
4812          * Replace 3 with another speed of choice: The higher, the faster it accelerated
4813          *      based on the distance of the starting point from the mouse
4814          * (All also effected by the timeout interval of this callback) */
4815
4816         if (view->scroll_info.start_y > view->scroll_info.last_y)
4817                 speed = -pow ((((gdouble)view->scroll_info.start_y - view->scroll_info.last_y) / 100), 3);
4818         else
4819                 speed = pow ((((gdouble)view->scroll_info.last_y - view->scroll_info.start_y) / 100), 3);
4820
4821         value = gtk_adjustment_get_value (view->vadjustment);
4822         value = CLAMP (value + speed, 0, view->vadjustment->upper - view->vadjustment->page_size);
4823         gtk_adjustment_set_value (view->vadjustment, value);
4824
4825         return TRUE;
4826
4827 }
4828
4829 void
4830 ev_view_autoscroll_start (EvView *view)
4831 {
4832         gint x, y;
4833
4834         g_return_if_fail (EV_IS_VIEW (view));
4835
4836         if (view->scroll_info.autoscrolling)
4837                 return;
4838
4839         view->scroll_info.autoscrolling = TRUE;
4840         view->scroll_info.timeout_id =
4841                 g_timeout_add (20, (GSourceFunc)ev_view_autoscroll_cb,
4842                                view);
4843
4844         gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
4845         ev_view_handle_cursor_over_xy (view, x, y);
4846 }
4847
4848 void
4849 ev_view_autoscroll_stop (EvView *view)
4850 {
4851         gint x, y;
4852
4853         g_return_if_fail (EV_IS_VIEW (view));
4854
4855         if (!view->scroll_info.autoscrolling)
4856                 return;
4857
4858         view->scroll_info.autoscrolling = FALSE;
4859         if (view->scroll_info.timeout_id) {
4860                 g_source_remove (view->scroll_info.timeout_id);
4861                 view->scroll_info.timeout_id = 0;
4862         }
4863
4864         gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
4865         ev_view_handle_cursor_over_xy (view, x, y);
4866 }
4867
4868 void
4869 ev_view_set_document (EvView     *view,
4870                       EvDocument *document)
4871 {
4872         g_return_if_fail (EV_IS_VIEW (view));
4873
4874         view->loading = FALSE;
4875
4876         if (document != view->document) {
4877                 clear_caches (view);
4878
4879                 if (view->document) {
4880                         g_object_unref (view->document);
4881                         view->page_cache = NULL;
4882                 }
4883
4884                 view->document = document;
4885                 view->find_result = 0;
4886
4887                 if (view->document) {
4888                         g_object_ref (view->document);
4889                         setup_caches (view);
4890                 }
4891
4892                 view_update_range_and_current_page (view);
4893
4894                 gtk_widget_queue_resize (GTK_WIDGET (view));
4895         }
4896 }
4897
4898 static void
4899 ev_view_reload_page (EvView    *view,
4900                      gint       page,
4901                      GdkRegion *region)
4902 {
4903         ev_pixbuf_cache_reload_page (view->pixbuf_cache,
4904                                      region,
4905                                      page,
4906                                      view->rotation,
4907                                      view->scale);
4908 }
4909
4910 void
4911 ev_view_reload (EvView *view)
4912 {
4913         ev_pixbuf_cache_clear (view->pixbuf_cache);
4914         view_update_range_and_current_page (view);
4915 }
4916
4917 /*** Zoom and sizing mode ***/
4918
4919 #define EPSILON 0.0000001
4920 void
4921 ev_view_set_zoom (EvView   *view,
4922                   double    factor,
4923                   gboolean  relative)
4924 {
4925         double scale;
4926
4927         if (relative)
4928                 scale = view->scale * factor;
4929         else
4930                 scale = factor;
4931
4932         scale = CLAMP (scale,
4933                        view->sizing_mode == EV_SIZING_FREE ? view->min_scale : 0,
4934                        view->max_scale);
4935
4936         if (scale == view->scale)
4937                 return;
4938
4939         if (ABS (view->scale - scale) < EPSILON)
4940                 return;
4941
4942         if (view->loading_text) {
4943                 cairo_surface_destroy (view->loading_text);
4944                 view->loading_text = NULL;
4945         }
4946
4947         view->scale = scale;
4948         view->pending_resize = TRUE;
4949
4950         gtk_widget_queue_resize (GTK_WIDGET (view));
4951
4952         g_object_notify (G_OBJECT (view), "zoom");
4953 }
4954
4955 double
4956 ev_view_get_zoom (EvView *view)
4957 {
4958         return view->scale;
4959 }
4960
4961 void
4962 ev_view_set_screen_dpi (EvView  *view,
4963                         gdouble  dpi)
4964 {
4965         g_return_if_fail (EV_IS_VIEW (view));
4966         g_return_if_fail (dpi > 0);
4967
4968         view->dpi = dpi;
4969         view->min_scale = MIN_SCALE * dpi / 72.0;
4970         view->max_scale = MAX_SCALE * dpi / 72.0;
4971 }
4972
4973 gboolean
4974 ev_view_get_continuous (EvView *view)
4975 {
4976         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
4977
4978         return view->continuous;
4979 }
4980
4981 void
4982 ev_view_set_continuous (EvView   *view,
4983                         gboolean  continuous)
4984 {
4985         g_return_if_fail (EV_IS_VIEW (view));
4986
4987         continuous = continuous != FALSE;
4988
4989         if (view->continuous != continuous) {
4990                 view->continuous = continuous;
4991                 view->pending_scroll = SCROLL_TO_PAGE_POSITION;
4992                 gtk_widget_queue_resize (GTK_WIDGET (view));
4993         }
4994
4995         g_object_notify (G_OBJECT (view), "continuous");
4996 }
4997
4998 gboolean
4999 ev_view_get_dual_page (EvView *view)
5000 {
5001         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
5002
5003         return view->dual_page;
5004 }
5005
5006 void
5007 ev_view_set_dual_page (EvView   *view,
5008                        gboolean  dual_page)
5009 {
5010         g_return_if_fail (EV_IS_VIEW (view));
5011
5012         dual_page = dual_page != FALSE;
5013
5014         if (view->dual_page == dual_page)
5015                 return;
5016
5017         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
5018         view->dual_page = dual_page;
5019         /* FIXME: if we're keeping the pixbuf cache around, we should extend the
5020          * preload_cache_size to be 2 if dual_page is set.
5021          */
5022         gtk_widget_queue_resize (GTK_WIDGET (view));
5023
5024         g_object_notify (G_OBJECT (view), "dual-page");
5025 }
5026
5027 void
5028 ev_view_set_fullscreen (EvView   *view,
5029                          gboolean  fullscreen)
5030 {
5031         g_return_if_fail (EV_IS_VIEW (view));
5032
5033         fullscreen = fullscreen != FALSE;
5034
5035         if (view->fullscreen == fullscreen)
5036                 return;
5037
5038         view->fullscreen = fullscreen;
5039         gtk_widget_queue_resize (GTK_WIDGET (view));
5040
5041         g_object_notify (G_OBJECT (view), "fullscreen");
5042 }
5043
5044 gboolean
5045 ev_view_get_fullscreen (EvView *view)
5046 {
5047         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
5048
5049         return view->fullscreen;
5050 }
5051
5052 void
5053 ev_view_set_presentation (EvView   *view,
5054                           gboolean  presentation)
5055 {
5056         g_return_if_fail (EV_IS_VIEW (view));
5057
5058         presentation = presentation != FALSE;
5059
5060         if (view->presentation == presentation)
5061                 return;
5062
5063         if (!presentation)
5064                 view->presentation_state = EV_PRESENTATION_NORMAL;
5065
5066         view->presentation = presentation;
5067         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
5068
5069         if (presentation) {
5070                 view->sizing_mode_saved = view->sizing_mode;
5071                 view->scale_saved = view->scale;
5072                 ev_view_set_sizing_mode (view, EV_SIZING_BEST_FIT);
5073         } else {
5074                 ev_view_set_sizing_mode (view, view->sizing_mode_saved);
5075                 ev_view_set_zoom (view, view->scale_saved, FALSE);
5076         }
5077
5078         gtk_widget_queue_resize (GTK_WIDGET (view));
5079
5080         if (presentation)
5081                 ev_view_presentation_transition_start (view);
5082         else {
5083                 ev_view_presentation_transition_stop (view);
5084
5085                 if (view->animation) {
5086                         /* stop any running animation */
5087                         ev_view_transition_animation_cancel (view->animation, view);
5088                 }
5089         }
5090
5091         if (GTK_WIDGET_REALIZED (view)) {
5092                 if (view->presentation)
5093                         gdk_window_set_background (view->layout.bin_window,
5094                                                    &GTK_WIDGET (view)->style->black);
5095                 else
5096                         gdk_window_set_background (view->layout.bin_window,
5097                                                    &GTK_WIDGET (view)->style->mid [GTK_STATE_NORMAL]);
5098         }
5099
5100         g_object_notify (G_OBJECT (view), "presentation");
5101 }
5102
5103 gboolean
5104 ev_view_get_presentation (EvView *view)
5105 {
5106         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
5107
5108         return view->presentation;
5109 }
5110
5111 static gboolean
5112 transition_next_page (EvView *view)
5113 {
5114         ev_view_next_page (view);
5115
5116         return FALSE;
5117 }
5118
5119 static void
5120 ev_view_presentation_transition_stop (EvView *view)
5121 {
5122         if (view->trans_timeout_id > 0)
5123                 g_source_remove (view->trans_timeout_id);
5124         view->trans_timeout_id = 0;
5125 }
5126
5127 static void
5128 ev_view_presentation_transition_start (EvView *view)
5129 {
5130         gdouble duration;
5131
5132         if (!EV_IS_DOCUMENT_TRANSITION (view->document))
5133                 return;
5134
5135         ev_view_presentation_transition_stop (view);
5136
5137         duration = ev_document_transition_get_page_duration (EV_DOCUMENT_TRANSITION (view->document),
5138                                                              view->current_page);
5139         if (duration > 0) {
5140                 view->trans_timeout_id =
5141                         g_timeout_add_seconds (duration,
5142                                                (GSourceFunc) transition_next_page,
5143                                                view);
5144         }
5145 }
5146
5147 void
5148 ev_view_set_sizing_mode (EvView       *view,
5149                          EvSizingMode  sizing_mode)
5150 {
5151         g_return_if_fail (EV_IS_VIEW (view));
5152
5153         if (view->sizing_mode == sizing_mode)
5154                 return;
5155
5156         view->sizing_mode = sizing_mode;
5157         gtk_widget_queue_resize (GTK_WIDGET (view));
5158
5159         g_object_notify (G_OBJECT (view), "sizing-mode");
5160 }
5161
5162 EvSizingMode
5163 ev_view_get_sizing_mode (EvView *view)
5164 {
5165         g_return_val_if_fail (EV_IS_VIEW (view), EV_SIZING_FREE);
5166
5167         return view->sizing_mode;
5168 }
5169
5170 gboolean
5171 ev_view_can_zoom_in (EvView *view)
5172 {
5173         return view->scale * ZOOM_IN_FACTOR <= view->max_scale;
5174 }
5175
5176 gboolean
5177 ev_view_can_zoom_out (EvView *view)
5178 {
5179         return view->scale * ZOOM_OUT_FACTOR >= view->min_scale;
5180 }
5181
5182 void
5183 ev_view_zoom_in (EvView *view)
5184 {
5185         g_return_if_fail (view->sizing_mode == EV_SIZING_FREE);
5186
5187         if (view->presentation)
5188                 return;
5189
5190         view->pending_scroll = SCROLL_TO_CENTER;
5191         ev_view_set_zoom (view, ZOOM_IN_FACTOR, TRUE);
5192 }
5193
5194 void
5195 ev_view_zoom_out (EvView *view)
5196 {
5197         g_return_if_fail (view->sizing_mode == EV_SIZING_FREE);
5198
5199         if (view->presentation)
5200                 return;
5201
5202         view->pending_scroll = SCROLL_TO_CENTER;
5203         ev_view_set_zoom (view, ZOOM_OUT_FACTOR, TRUE);
5204 }
5205
5206 void
5207 ev_view_rotate_right (EvView *view)
5208 {
5209         int rotation = view->rotation + 90;
5210
5211         if (rotation >= 360) {
5212                 rotation -= 360;
5213         }
5214
5215         ev_view_set_rotation (view, rotation);
5216 }
5217
5218 void
5219 ev_view_rotate_left (EvView *view)
5220 {
5221         int rotation = view->rotation - 90;
5222
5223         if (rotation < 0) {
5224                 rotation += 360;
5225         }
5226
5227         ev_view_set_rotation (view, rotation);
5228 }
5229
5230 void
5231 ev_view_set_rotation (EvView *view, int rotation)
5232 {
5233         view->rotation = rotation;
5234
5235         if (view->pixbuf_cache) {
5236                 ev_pixbuf_cache_clear (view->pixbuf_cache);
5237                 gtk_widget_queue_resize (GTK_WIDGET (view));
5238         }
5239
5240         if (rotation != 0)
5241                 clear_selection (view);
5242
5243         g_object_notify (G_OBJECT (view), "rotation");
5244 }
5245
5246 int
5247 ev_view_get_rotation (EvView *view)
5248 {
5249         return view->rotation;
5250 }
5251
5252 static double
5253 zoom_for_size_fit_width (int doc_width,
5254                          int doc_height,
5255                          int target_width,
5256                          int target_height,
5257                          int vsb_width)
5258 {
5259         double scale;
5260
5261         scale = (double)target_width / doc_width;
5262
5263         if (doc_height * scale > target_height)
5264                 scale = (double) (target_width - vsb_width) / doc_width;
5265
5266         return scale;
5267 }
5268
5269 static double
5270 zoom_for_size_fit_height (int doc_width,
5271                           int doc_height,
5272                           int target_width,
5273                           int target_height,
5274                           int vsb_height)
5275 {
5276         double scale;
5277
5278         scale = (double)target_height / doc_height;
5279
5280         if (doc_width * scale > target_width)
5281                 scale = (double) (target_height - vsb_height) / doc_height;
5282
5283         return scale;
5284 }
5285
5286 static double
5287 zoom_for_size_best_fit (int doc_width,
5288                         int doc_height,
5289                         int target_width,
5290                         int target_height,
5291                         int vsb_width,
5292                         int hsb_width)
5293 {
5294         double w_scale;
5295         double h_scale;
5296
5297         w_scale = (double)target_width / doc_width;
5298         h_scale = (double)target_height / doc_height;
5299
5300         if (doc_height * w_scale > target_height)
5301                 w_scale = (double) (target_width - vsb_width) / doc_width;
5302         if (doc_width * h_scale > target_width)
5303                 h_scale = (double) (target_height - hsb_width) / doc_height;
5304
5305         return MIN (w_scale, h_scale);
5306 }
5307
5308
5309 static void
5310 ev_view_zoom_for_size_presentation (EvView *view,
5311                                     int     width,
5312                                     int     height)
5313 {
5314         int doc_width, doc_height;
5315         gdouble scale;
5316
5317         ev_page_cache_get_size (view->page_cache,
5318                                 view->current_page,
5319                                 view->rotation,
5320                                 1.0,
5321                                 &doc_width,
5322                                 &doc_height);
5323         scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, 0, 0);
5324         ev_view_set_zoom (view, scale, FALSE);
5325 }
5326
5327 static void
5328 ev_view_zoom_for_size_continuous_and_dual_page (EvView *view,
5329                            int     width,
5330                            int     height,
5331                            int     vsb_width,
5332                            int     hsb_height)
5333 {
5334         int doc_width, doc_height;
5335         GtkBorder border;
5336         gdouble scale;
5337
5338         ev_page_cache_get_max_width (view->page_cache,
5339                                      view->rotation,
5340                                      1.0,
5341                                      &doc_width);
5342         ev_page_cache_get_max_height (view->page_cache,
5343                                       view->rotation,
5344                                       1.0,
5345                                       &doc_height);
5346         compute_border (view, doc_width, doc_height, &border);
5347
5348         doc_width = doc_width * 2;
5349         width -= (2 * (border.left + border.right) + 3 * view->spacing);
5350         height -= (border.top + border.bottom + 2 * view->spacing - 1);
5351
5352         /* FIXME: We really need to calculate the overall height here, not the
5353          * page height.  We assume there's always a vertical scrollbar for
5354          * now.  We need to fix this. */
5355         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
5356                 scale = zoom_for_size_fit_width (doc_width, doc_height, width - vsb_width, height, 0);
5357         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
5358                 scale = zoom_for_size_best_fit (doc_width, doc_height, width - vsb_width, height, 0, hsb_height);
5359         else
5360                 g_assert_not_reached ();
5361
5362         ev_view_set_zoom (view, scale, FALSE);
5363 }
5364
5365 static void
5366 ev_view_zoom_for_size_continuous (EvView *view,
5367                                   int     width,
5368                                   int     height,
5369                                   int     vsb_width,
5370                                   int     hsb_height)
5371 {
5372         int doc_width, doc_height;
5373         GtkBorder border;
5374         gdouble scale;
5375
5376         ev_page_cache_get_max_width (view->page_cache,
5377                                      view->rotation,
5378                                      1.0,
5379                                      &doc_width);
5380         ev_page_cache_get_max_height (view->page_cache,
5381                                       view->rotation,
5382                                       1.0,
5383                                       &doc_height);
5384         compute_border (view, doc_width, doc_height, &border);
5385
5386         width -= (border.left + border.right + 2 * view->spacing);
5387         height -= (border.top + border.bottom + 2 * view->spacing - 1);
5388
5389         /* FIXME: We really need to calculate the overall height here, not the
5390          * page height.  We assume there's always a vertical scrollbar for
5391          * now.  We need to fix this. */
5392         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
5393                 scale = zoom_for_size_fit_width (doc_width, doc_height, width - vsb_width, height, 0);
5394         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
5395                 scale = zoom_for_size_best_fit (doc_width, doc_height, width - vsb_width, height, 0, hsb_height);
5396         else
5397                 g_assert_not_reached ();
5398
5399         ev_view_set_zoom (view, scale, FALSE);
5400 }
5401
5402 static void
5403 ev_view_zoom_for_size_dual_page (EvView *view,
5404                                  int     width,
5405                                  int     height,
5406                                  int     vsb_width,
5407                                  int     hsb_height)
5408 {
5409         GtkBorder border;
5410         gint doc_width, doc_height;
5411         gdouble scale;
5412         gint other_page;
5413
5414         other_page = view->current_page ^ 1;
5415
5416         /* Find the largest of the two. */
5417         ev_page_cache_get_size (view->page_cache,
5418                                 view->current_page,
5419                                 view->rotation,
5420                                 1.0,
5421                                 &doc_width, &doc_height);
5422
5423         if (other_page < ev_page_cache_get_n_pages (view->page_cache)) {
5424                 gint width_2, height_2;
5425                 ev_page_cache_get_size (view->page_cache,
5426                                         other_page,
5427                                         view->rotation,
5428                                         1.0,
5429                                         &width_2, &height_2);
5430                 if (width_2 > doc_width)
5431                         doc_width = width_2;
5432                 if (height_2 > doc_height)
5433                         doc_height = height_2;
5434         }
5435         compute_border (view, doc_width, doc_height, &border);
5436
5437         doc_width = doc_width * 2;
5438         width -= ((border.left + border.right)* 2 + 3 * view->spacing);
5439         height -= (border.top + border.bottom + 2 * view->spacing);
5440
5441         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
5442                 scale = zoom_for_size_fit_width (doc_width, doc_height, width, height, vsb_width);
5443         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
5444                 scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, vsb_width, hsb_height);
5445         else
5446                 g_assert_not_reached ();
5447
5448         ev_view_set_zoom (view, scale, FALSE);
5449 }
5450
5451 static void
5452 ev_view_zoom_for_size_single_page (EvView *view,
5453                                    int     width,
5454                                    int     height,
5455                                    int     vsb_width,
5456                                    int     hsb_height)
5457 {
5458         int doc_width, doc_height;
5459         GtkBorder border;
5460         gdouble scale;
5461
5462         ev_page_cache_get_size (view->page_cache,
5463                                 view->current_page,
5464                                 view->rotation,
5465                                 1.0,
5466                                 &doc_width,
5467                                 &doc_height);
5468         /* Get an approximate border */
5469         compute_border (view, width, height, &border);
5470
5471         width -= (border.left + border.right + 2 * view->spacing);
5472         height -= (border.top + border.bottom + 2 * view->spacing);
5473
5474         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
5475                 scale = zoom_for_size_fit_width (doc_width, doc_height, width, height, vsb_width);
5476         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
5477                 scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, vsb_width, hsb_height);
5478         else
5479                 g_assert_not_reached ();
5480
5481         ev_view_set_zoom (view, scale, FALSE);
5482 }
5483
5484 void
5485 ev_view_set_zoom_for_size (EvView *view,
5486                            int     width,
5487                            int     height,
5488                            int     vsb_width,
5489                            int     hsb_height)
5490 {
5491         g_return_if_fail (EV_IS_VIEW (view));
5492         g_return_if_fail (view->sizing_mode == EV_SIZING_FIT_WIDTH ||
5493                           view->sizing_mode == EV_SIZING_BEST_FIT);
5494         g_return_if_fail (width >= 0);
5495         g_return_if_fail (height >= 0);
5496
5497         if (view->document == NULL)
5498                 return;
5499
5500         if (view->presentation)
5501                 ev_view_zoom_for_size_presentation (view, width, height);
5502         else if (view->continuous && view->dual_page)
5503                 ev_view_zoom_for_size_continuous_and_dual_page (view, width, height, vsb_width, hsb_height);
5504         else if (view->continuous)
5505                 ev_view_zoom_for_size_continuous (view, width, height, vsb_width, hsb_height);
5506         else if (view->dual_page)
5507                 ev_view_zoom_for_size_dual_page (view, width, height, vsb_width, hsb_height);
5508         else
5509                 ev_view_zoom_for_size_single_page (view, width, height, vsb_width, hsb_height);
5510 }
5511
5512 /*** Find ***/
5513 static gint
5514 ev_view_find_get_n_results (EvView *view, gint page)
5515 {
5516         return view->find_pages ? g_list_length (view->find_pages[page]) : 0;
5517 }
5518
5519 static EvRectangle *
5520 ev_view_find_get_result (EvView *view, gint page, gint result)
5521 {
5522         return view->find_pages ? (EvRectangle *) g_list_nth_data (view->find_pages[page], result) : NULL;
5523 }
5524
5525 static void
5526 jump_to_find_result (EvView *view)
5527 {
5528         gint n_results;
5529         gint page = view->current_page;
5530
5531         n_results = ev_view_find_get_n_results (view, page);
5532
5533         if (n_results > 0 && view->find_result < n_results) {
5534                 EvRectangle *rect;
5535                 GdkRectangle view_rect;
5536
5537                 rect = ev_view_find_get_result (view, page, view->find_result);
5538                 doc_rect_to_view_rect (view, page, rect, &view_rect);
5539                 ensure_rectangle_is_visible (view, &view_rect);
5540                 view->jump_to_find_result = FALSE;
5541         }
5542 }
5543
5544 /**
5545  * jump_to_find_page
5546  * @view: #EvView instance
5547  * @direction: Direction to look
5548  * @shift: Shift from current page
5549  *
5550  * Jumps to the first page that has occurences of searched word.
5551  * Uses a direction where to look and a shift from current page.
5552  *
5553  */
5554 static void
5555 jump_to_find_page (EvView *view, EvViewFindDirection direction, gint shift)
5556 {
5557         int n_pages, i;
5558
5559         n_pages = ev_page_cache_get_n_pages (view->page_cache);
5560
5561         for (i = 0; i < n_pages; i++) {
5562                 int page;
5563
5564                 if (direction == EV_VIEW_FIND_NEXT)
5565                         page = view->current_page + i;
5566                 else
5567                         page = view->current_page - i;
5568                 page += shift;
5569
5570                 if (page >= n_pages) {
5571                         page = page - n_pages;
5572                 } else if (page < 0)
5573                         page = page + n_pages;
5574
5575                 if (ev_view_find_get_n_results (view, page) > 0) {
5576                         ev_page_cache_set_current_page (view->page_cache, page);
5577                         break;
5578                 }
5579         }
5580 }
5581
5582 void
5583 ev_view_find_changed (EvView *view, GList **results, gint page)
5584 {
5585         view->find_pages = results;
5586
5587         if (view->jump_to_find_result == TRUE) {
5588                 jump_to_find_page (view, EV_VIEW_FIND_NEXT, 0);
5589                 jump_to_find_result (view);
5590         }
5591
5592         if (view->current_page == page)
5593                 gtk_widget_queue_draw (GTK_WIDGET (view));
5594 }
5595
5596 void
5597 ev_view_find_next (EvView *view)
5598 {
5599         gint n_results;
5600
5601         n_results = ev_view_find_get_n_results (view, view->current_page);
5602         view->find_result++;
5603
5604         if (view->find_result >= n_results) {
5605                 view->find_result = 0;
5606                 jump_to_find_page (view, EV_VIEW_FIND_NEXT, 1);
5607                 jump_to_find_result (view);
5608         } else {
5609                 jump_to_find_result (view);
5610                 gtk_widget_queue_draw (GTK_WIDGET (view));
5611         }
5612 }
5613
5614 void
5615 ev_view_find_previous (EvView *view)
5616 {
5617         view->find_result--;
5618
5619         if (view->find_result < 0) {
5620                 jump_to_find_page (view, EV_VIEW_FIND_PREV, -1);
5621                 view->find_result = MAX (0, ev_view_find_get_n_results (view, view->current_page) - 1);
5622                 jump_to_find_result (view);
5623         } else {
5624                 jump_to_find_result (view);
5625                 gtk_widget_queue_draw (GTK_WIDGET (view));
5626         }
5627 }
5628
5629 void
5630 ev_view_find_search_changed (EvView *view)
5631 {
5632         /* search string has changed, focus on new search result */
5633         view->jump_to_find_result = TRUE;
5634         view->find_pages = NULL;
5635 }
5636
5637 void
5638 ev_view_find_set_highlight_search (EvView *view, gboolean value)
5639 {
5640         view->highlight_find_results = value;
5641         gtk_widget_queue_draw (GTK_WIDGET (view));
5642 }
5643
5644 void
5645 ev_view_find_cancel (EvView *view)
5646 {
5647         view->find_pages = NULL;
5648 }
5649
5650 /*** Selections ***/
5651
5652 /* compute_new_selection_rect/text calculates the area currently selected by
5653  * view_rect.  each handles a different mode;
5654  */
5655 static GList *
5656 compute_new_selection_rect (EvView       *view,
5657                             GdkPoint     *start,
5658                             GdkPoint     *stop)
5659 {
5660         GdkRectangle view_rect;
5661         int n_pages, i;
5662         GList *list = NULL;
5663
5664         g_assert (view->selection_mode == EV_VIEW_SELECTION_RECTANGLE);
5665
5666         view_rect.x = MIN (start->x, stop->x);
5667         view_rect.y = MIN (start->y, stop->y);
5668         view_rect.width = MAX (start->x, stop->x) - view_rect.x;
5669         view_rect.width = MAX (start->y, stop->y) - view_rect.y;
5670
5671         n_pages = ev_page_cache_get_n_pages (view->page_cache);
5672
5673         for (i = 0; i < n_pages; i++) {
5674                 GdkRectangle page_area;
5675                 GtkBorder border;
5676
5677                 if (get_page_extents (view, i, &page_area, &border)) {
5678                         GdkRectangle overlap;
5679
5680                         if (gdk_rectangle_intersect (&page_area, &view_rect, &overlap)) {
5681                                 EvViewSelection *selection;
5682
5683                                 selection = g_new0 (EvViewSelection, 1);
5684                                 selection->page = i;
5685                                 view_rect_to_doc_rect (view, &overlap, &page_area,
5686                                                        &(selection->rect));
5687
5688                                 list = g_list_append (list, selection);
5689                         }
5690                 }
5691         }
5692
5693         return list;
5694 }
5695
5696 static gboolean
5697 gdk_rectangle_point_in (GdkRectangle *rectangle,
5698                         GdkPoint     *point)
5699 {
5700         return rectangle->x <= point->x &&
5701                 rectangle->y <= point->y &&
5702                 point->x < rectangle->x + rectangle->width &&
5703                 point->y < rectangle->y + rectangle->height;
5704 }
5705
5706 static GList *
5707 compute_new_selection_text (EvView          *view,
5708                             EvSelectionStyle style,
5709                             GdkPoint        *start,
5710                             GdkPoint        *stop)
5711 {
5712         int n_pages, i, first, last;
5713         GList *list = NULL;
5714         EvViewSelection *selection;
5715         gint width, height;
5716         int start_page, end_page;
5717
5718         g_assert (view->selection_mode == EV_VIEW_SELECTION_TEXT);
5719
5720         n_pages = ev_page_cache_get_n_pages (view->page_cache);
5721
5722         /* First figure out the range of pages the selection
5723          * affects. */
5724         first = n_pages;
5725         last = 0;
5726         if (view->continuous) {
5727                 start_page = 0;
5728                 end_page = n_pages;
5729         } else if (view->dual_page) {
5730                 start_page = view->start_page;
5731                 end_page = view->end_page + 1;
5732         } else {
5733                 start_page = view->current_page;
5734                 end_page = view->current_page + 1;
5735         }
5736
5737         for (i = start_page; i < end_page; i++) {
5738                 GdkRectangle page_area;
5739                 GtkBorder border;
5740
5741                 get_page_extents (view, i, &page_area, &border);
5742                 if (gdk_rectangle_point_in (&page_area, start) ||
5743                     gdk_rectangle_point_in (&page_area, stop)) {
5744                         if (first == n_pages)
5745                                 first = i;
5746                         last = i;
5747                 }
5748
5749         }
5750
5751         /* Now create a list of EvViewSelection's for the affected
5752          * pages.  This could be an empty list, a list of just one
5753          * page or a number of pages.*/
5754         for (i = first; i < last + 1; i++) {
5755                 GdkRectangle page_area;
5756                 GtkBorder border;
5757                 GdkPoint *point;
5758
5759                 ev_page_cache_get_size (view->page_cache, i,
5760                                         view->rotation,
5761                                         1.0, &width, &height);
5762
5763                 selection = g_new0 (EvViewSelection, 1);
5764                 selection->page = i;
5765                 selection->style = style;
5766                 selection->rect.x1 = selection->rect.y1 = 0;
5767                 selection->rect.x2 = width;
5768                 selection->rect.y2 = height;
5769
5770                 get_page_extents (view, i, &page_area, &border);
5771
5772                 if (gdk_rectangle_point_in (&page_area, start))
5773                         point = start;
5774                 else
5775                         point = stop;
5776
5777                 if (i == first)
5778                         view_point_to_doc_point (view, point, &page_area,
5779                                                  &selection->rect.x1,
5780                                                  &selection->rect.y1);
5781
5782                 /* If the selection is contained within just one page,
5783                  * make sure we don't write 'start' into both points
5784                  * in selection->rect. */
5785                 if (first == last)
5786                         point = stop;
5787
5788                 if (i == last)
5789                         view_point_to_doc_point (view, point, &page_area,
5790                                                  &selection->rect.x2,
5791                                                  &selection->rect.y2);
5792
5793                 list = g_list_append (list, selection);
5794         }
5795
5796         return list;
5797 }
5798
5799 /* This function takes the newly calculated list, and figures out which regions
5800  * have changed.  It then queues a redraw approporiately.
5801  */
5802 static void
5803 merge_selection_region (EvView *view,
5804                         GList  *new_list)
5805 {
5806         GList *old_list;
5807         GList *new_list_ptr, *old_list_ptr;
5808
5809         /* Update the selection */
5810         old_list = ev_pixbuf_cache_get_selection_list (view->pixbuf_cache);
5811         g_list_foreach (view->selection_info.selections, (GFunc)selection_free, NULL);
5812         g_list_free (view->selection_info.selections);
5813         view->selection_info.selections = new_list;
5814         ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, new_list);
5815         g_object_notify (G_OBJECT (view), "has-selection");
5816
5817         new_list_ptr = new_list;
5818         old_list_ptr = old_list;
5819
5820         while (new_list_ptr || old_list_ptr) {
5821                 EvViewSelection *old_sel, *new_sel;
5822                 int cur_page;
5823                 GdkRegion *region = NULL;
5824
5825                 new_sel = (new_list_ptr) ? (new_list_ptr->data) : NULL;
5826                 old_sel = (old_list_ptr) ? (old_list_ptr->data) : NULL;
5827
5828                 /* Assume that the lists are in order, and we run through them
5829                  * comparing them, one page at a time.  We come out with the
5830                  * first page we see. */
5831                 if (new_sel && old_sel) {
5832                         if (new_sel->page < old_sel->page) {
5833                                 new_list_ptr = new_list_ptr->next;
5834                                 old_sel = NULL;
5835                         } else if (new_sel->page > old_sel->page) {
5836                                 old_list_ptr = old_list_ptr->next;
5837                                 new_sel = NULL;
5838                         } else {
5839                                 new_list_ptr = new_list_ptr->next;
5840                                 old_list_ptr = old_list_ptr->next;
5841                         }
5842                 } else if (new_sel) {
5843                         new_list_ptr = new_list_ptr->next;
5844                 } else if (old_sel) {
5845                         old_list_ptr = old_list_ptr->next;
5846                 }
5847
5848                 g_assert (new_sel || old_sel);
5849
5850                 /* is the page we're looking at on the screen?*/
5851                 cur_page = new_sel ? new_sel->page : old_sel->page;
5852                 if (cur_page < view->start_page || cur_page > view->end_page)
5853                         continue;
5854
5855                 /* seed the cache with a new page.  We are going to need the new
5856                  * region too. */
5857                 if (new_sel) {
5858                         GdkRegion *tmp_region = NULL;
5859
5860                         ev_pixbuf_cache_get_selection_surface (view->pixbuf_cache,
5861                                                                cur_page,
5862                                                                view->scale,
5863                                                                &tmp_region);
5864
5865                         if (tmp_region) {
5866                                 new_sel->covered_region = gdk_region_copy (tmp_region);
5867                         }
5868                 }
5869
5870                 /* Now we figure out what needs redrawing */
5871                 if (old_sel && new_sel) {
5872                         if (old_sel->covered_region && new_sel->covered_region) {
5873                                 /* We only want to redraw the areas that have
5874                                  * changed, so we xor the old and new regions
5875                                  * and redraw if it's different */
5876                                 region = gdk_region_copy (old_sel->covered_region);
5877                                 gdk_region_xor (region, new_sel->covered_region);
5878                                 if (gdk_region_empty (region)) {
5879                                         gdk_region_destroy (region);
5880                                         region = NULL;
5881                                 }
5882                         } else if (old_sel->covered_region) {
5883                                 region = gdk_region_copy (old_sel->covered_region);
5884                         } else if (new_sel->covered_region) {
5885                                 region = gdk_region_copy (new_sel->covered_region);
5886                         }
5887                 } else if (old_sel && !new_sel) {
5888                         if (old_sel->covered_region && !gdk_region_empty (old_sel->covered_region)) {
5889                                 region = gdk_region_copy (old_sel->covered_region);
5890                         }
5891                 } else if (!old_sel && new_sel) {
5892                         if (new_sel->covered_region && !gdk_region_empty (new_sel->covered_region)) {
5893                                 region = gdk_region_copy (new_sel->covered_region);
5894                         }
5895                 } else {
5896                         g_assert_not_reached ();
5897                 }
5898
5899                 /* Redraw the damaged region! */
5900                 if (region) {
5901                         GdkRectangle page_area;
5902                         GtkBorder border;
5903
5904                         /* I don't know why but the region is smaller
5905                          * than expected. This hack fixes it, I guess
5906                          * 10 pixels more won't hurt
5907                          */
5908                         gdk_region_shrink (region, -5, -5);
5909
5910                         get_page_extents (view, cur_page, &page_area, &border);
5911                         gdk_region_offset (region,
5912                                            page_area.x + border.left - view->scroll_x,
5913                                            page_area.y + border.top - view->scroll_y);
5914                         gdk_window_invalidate_region (view->layout.bin_window, region, TRUE);
5915                         gdk_region_destroy (region);
5916                 }
5917         }
5918
5919         /* Free the old list, now that we're done with it. */
5920         g_list_foreach (old_list, (GFunc) selection_free, NULL);
5921         g_list_free (old_list);
5922 }
5923
5924 static void
5925 compute_selections (EvView          *view,
5926                     EvSelectionStyle style,
5927                     GdkPoint        *start,
5928                     GdkPoint        *stop)
5929 {
5930         GList *list;
5931
5932         if (view->selection_mode == EV_VIEW_SELECTION_RECTANGLE)
5933                 list = compute_new_selection_rect (view, start, stop);
5934         else
5935                 list = compute_new_selection_text (view, style, start, stop);
5936         merge_selection_region (view, list);
5937 }
5938
5939 /* Free's the selection.  It's up to the caller to queue redraws if needed.
5940  */
5941 static void
5942 selection_free (EvViewSelection *selection)
5943 {
5944         if (selection->covered_region)
5945                 gdk_region_destroy (selection->covered_region);
5946         g_free (selection);
5947 }
5948
5949 static void
5950 clear_selection (EvView *view)
5951 {
5952         g_list_foreach (view->selection_info.selections, (GFunc)selection_free, NULL);
5953         g_list_free (view->selection_info.selections);
5954         view->selection_info.selections = NULL;
5955         view->selection_info.in_selection = FALSE;
5956         if (view->pixbuf_cache)
5957                 ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, NULL);
5958         g_object_notify (G_OBJECT (view), "has-selection");
5959 }
5960
5961 void
5962 ev_view_select_all (EvView *view)
5963 {
5964         GList *selections = NULL;
5965         int n_pages, i;
5966
5967         /* Disable selection on rotated pages for the 0.4.0 series */
5968         if (view->rotation != 0)
5969                 return;
5970
5971         clear_selection (view);
5972
5973         n_pages = ev_page_cache_get_n_pages (view->page_cache);
5974         for (i = 0; i < n_pages; i++) {
5975                 int width, height;
5976                 EvViewSelection *selection;
5977
5978                 ev_page_cache_get_size (view->page_cache,
5979                                         i,
5980                                         view->rotation,
5981                                         1.0, &width, &height);
5982
5983                 selection = g_new0 (EvViewSelection, 1);
5984                 selection->page = i;
5985                 selection->style = EV_SELECTION_STYLE_GLYPH;
5986                 selection->rect.x1 = selection->rect.y1 = 0;
5987                 selection->rect.x2 = width;
5988                 selection->rect.y2 = height;
5989
5990                 selections = g_list_append (selections, selection);
5991         }
5992
5993         merge_selection_region (view, selections);
5994         gtk_widget_queue_draw (GTK_WIDGET (view));
5995 }
5996
5997 gboolean
5998 ev_view_get_has_selection (EvView *view)
5999 {
6000         return view->selection_info.selections != NULL;
6001 }
6002
6003 static char *
6004 get_selected_text (EvView *view)
6005 {
6006         GString *text;
6007         GList *l;
6008         gchar *normalized_text;
6009         EvRenderContext *rc;
6010
6011         text = g_string_new (NULL);
6012         rc = ev_render_context_new (NULL, view->rotation, view->scale);
6013
6014         ev_document_doc_mutex_lock ();
6015
6016         for (l = view->selection_info.selections; l != NULL; l = l->next) {
6017                 EvViewSelection *selection = (EvViewSelection *)l->data;
6018                 EvPage *page;
6019                 gchar *tmp;
6020
6021                 page = ev_document_get_page (view->document, selection->page);
6022                 ev_render_context_set_page (rc, page);
6023                 g_object_unref (page);
6024
6025                 tmp = ev_selection_get_selected_text (EV_SELECTION (view->document),
6026                                                       rc, selection->style,
6027                                                       &(selection->rect));
6028
6029                 g_string_append (text, tmp);
6030                 g_free (tmp);
6031         }
6032
6033         g_object_unref (rc);
6034
6035         ev_document_doc_mutex_unlock ();
6036
6037         normalized_text = g_utf8_normalize (text->str, text->len, G_NORMALIZE_NFKC);
6038         g_string_free (text, TRUE);
6039         return normalized_text;
6040 }
6041
6042 static void
6043 ev_view_clipboard_copy (EvView      *view,
6044                         const gchar *text)
6045 {
6046         GtkClipboard *clipboard;
6047
6048         clipboard = gtk_widget_get_clipboard (GTK_WIDGET (view),
6049                                               GDK_SELECTION_CLIPBOARD);
6050         gtk_clipboard_set_text (clipboard, text, -1);
6051 }
6052
6053 void
6054 ev_view_copy (EvView *ev_view)
6055 {
6056         char *text;
6057
6058         if (!EV_IS_SELECTION (ev_view->document))
6059                 return;
6060
6061         text = get_selected_text (ev_view);
6062         ev_view_clipboard_copy (ev_view, text);
6063         g_free (text);
6064 }
6065
6066 static void
6067 ev_view_primary_get_cb (GtkClipboard     *clipboard,
6068                         GtkSelectionData *selection_data,
6069                         guint             info,
6070                         gpointer          data)
6071 {
6072         EvView *ev_view = EV_VIEW (data);
6073
6074         if (ev_view->link_selected) {
6075                 gtk_selection_data_set_text (selection_data,
6076                                              ev_link_action_get_uri (ev_view->link_selected),
6077                                              -1);
6078         } else if (EV_IS_SELECTION (ev_view->document) &&
6079                    ev_view->selection_info.selections) {
6080                 gchar *text;
6081
6082                 text = get_selected_text (ev_view);
6083                 if (text) {
6084                         gtk_selection_data_set_text (selection_data, text, -1);
6085                         g_free (text);
6086                 }
6087         }
6088 }
6089
6090 static void
6091 ev_view_primary_clear_cb (GtkClipboard *clipboard,
6092                           gpointer      data)
6093 {
6094         EvView *view = EV_VIEW (data);
6095
6096         clear_selection (view);
6097         clear_link_selected (view);
6098 }
6099
6100 static void
6101 ev_view_update_primary_selection (EvView *ev_view)
6102 {
6103         GtkClipboard *clipboard;
6104
6105         clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view),
6106                                               GDK_SELECTION_PRIMARY);
6107
6108         if (ev_view->selection_info.selections || ev_view->link_selected) {
6109                 GtkTargetList *target_list;
6110                 GtkTargetEntry *targets;
6111                 int n_targets;
6112
6113                 target_list = gtk_target_list_new (NULL, 0);
6114                 gtk_target_list_add_text_targets (target_list, 0);
6115                 targets = gtk_target_table_new_from_list (target_list, &n_targets);
6116                 gtk_target_list_unref (target_list);
6117
6118                 if (!gtk_clipboard_set_with_owner (clipboard,
6119                                                    targets, n_targets,
6120                                                    ev_view_primary_get_cb,
6121                                                    ev_view_primary_clear_cb,
6122                                                    G_OBJECT (ev_view)))
6123                         ev_view_primary_clear_cb (clipboard, ev_view);
6124
6125                 gtk_target_table_free (targets, n_targets);
6126         } else {
6127                 if (gtk_clipboard_get_owner (clipboard) == G_OBJECT (ev_view))
6128                         gtk_clipboard_clear (clipboard);
6129         }
6130 }
6131
6132 static void
6133 clear_link_selected (EvView *view)
6134 {
6135         if (view->link_selected) {
6136                 g_object_unref (view->link_selected);
6137                 view->link_selected = NULL;
6138         }
6139 }
6140
6141 void
6142 ev_view_copy_link_address (EvView       *view,
6143                            EvLinkAction *action)
6144 {
6145         clear_link_selected (view);
6146
6147         ev_view_clipboard_copy (view, ev_link_action_get_uri (action));
6148
6149         view->link_selected = g_object_ref (action);
6150         ev_view_update_primary_selection (view);
6151 }
6152
6153 /*** Cursor operations ***/
6154
6155 static GdkCursor *
6156 ev_view_create_invisible_cursor(void)
6157 {
6158        GdkBitmap *empty;
6159        GdkColor black = { 0, 0, 0, 0 };
6160        static char bits[] = { 0x00 };
6161
6162        empty = gdk_bitmap_create_from_data (NULL, bits, 1, 1);
6163
6164        return gdk_cursor_new_from_pixmap (empty, empty, &black, &black, 0, 0);
6165 }
6166
6167 static void
6168 ev_view_set_cursor (EvView *view, EvViewCursor new_cursor)
6169 {
6170         GdkCursor *cursor = NULL;
6171         GdkDisplay *display;
6172         GtkWidget *widget;
6173
6174         if (view->cursor == new_cursor) {
6175                 return;
6176         }
6177
6178         widget = gtk_widget_get_toplevel (GTK_WIDGET (view));
6179         display = gtk_widget_get_display (widget);
6180         view->cursor = new_cursor;
6181
6182         switch (new_cursor) {
6183                 case EV_VIEW_CURSOR_NORMAL:
6184                         gdk_window_set_cursor (view->layout.bin_window, NULL);
6185                         break;
6186                 case EV_VIEW_CURSOR_IBEAM:
6187                         cursor = gdk_cursor_new_for_display (display, GDK_XTERM);
6188                         break;
6189                 case EV_VIEW_CURSOR_LINK:
6190                         cursor = gdk_cursor_new_for_display (display, GDK_HAND2);
6191                         break;
6192                 case EV_VIEW_CURSOR_WAIT:
6193                         cursor = gdk_cursor_new_for_display (display, GDK_WATCH);
6194                         break;
6195                 case EV_VIEW_CURSOR_HIDDEN:
6196                         cursor = ev_view_create_invisible_cursor ();
6197                         break;
6198                 case EV_VIEW_CURSOR_DRAG:
6199                         cursor = gdk_cursor_new_for_display (display, GDK_FLEUR);
6200                         break;
6201                 case EV_VIEW_CURSOR_AUTOSCROLL:
6202                         cursor = gdk_cursor_new_for_display (display, GDK_DOUBLE_ARROW);
6203                         break;
6204         }
6205
6206         if (cursor) {
6207                 gdk_window_set_cursor (view->layout.bin_window, cursor);
6208                 gdk_cursor_unref (cursor);
6209                 gdk_flush();
6210         }
6211 }
6212
6213 void
6214 ev_view_hide_cursor (EvView *view)
6215 {
6216        ev_view_set_cursor (view, EV_VIEW_CURSOR_HIDDEN);
6217 }
6218
6219 void
6220 ev_view_show_cursor (EvView *view)
6221 {
6222        ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
6223 }
6224
6225 static void
6226 ev_view_reset_presentation_state (EvView *view)
6227 {
6228         if (!view->presentation ||
6229             view->presentation_state == EV_PRESENTATION_NORMAL)
6230                 return;
6231
6232         view->presentation_state = EV_PRESENTATION_NORMAL;
6233         gdk_window_set_background (view->layout.bin_window,
6234                                    &GTK_WIDGET (view)->style->black);
6235         gtk_widget_queue_draw (GTK_WIDGET (view));
6236 }
6237
6238 gboolean
6239 ev_view_next_page (EvView *view)
6240 {
6241         int page, n_pages;
6242
6243         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
6244
6245         if (!view->page_cache)
6246                 return FALSE;
6247
6248         if (view->presentation &&
6249             (view->presentation_state == EV_PRESENTATION_BLACK ||
6250              view->presentation_state == EV_PRESENTATION_WHITE)) {
6251                 ev_view_reset_presentation_state (view);
6252                 return FALSE;
6253         }
6254
6255         if (view->animation) {
6256                 ev_view_transition_animation_cancel (view->animation, view);
6257         }
6258
6259         ev_view_presentation_transition_stop (view);
6260         ev_view_reset_presentation_state (view);
6261
6262         page = ev_page_cache_get_current_page (view->page_cache);
6263         n_pages = ev_page_cache_get_n_pages (view->page_cache);
6264
6265         if (view->dual_page && !view->presentation)
6266                 page = page + 2;
6267         else
6268                 page = page + 1;
6269
6270         if (page < n_pages) {
6271                 ev_page_cache_set_current_page (view->page_cache, page);
6272                 return TRUE;
6273         } else if (view->presentation && page == n_pages) {
6274                 view->presentation_state = EV_PRESENTATION_END;
6275                 gtk_widget_queue_draw (GTK_WIDGET (view));
6276                 return TRUE;
6277         } else if (view->dual_page && page == n_pages) {
6278                 ev_page_cache_set_current_page (view->page_cache, page - 1);
6279                 return TRUE;
6280         } else {
6281                 return FALSE;
6282         }
6283 }
6284
6285 gboolean
6286 ev_view_previous_page (EvView *view)
6287 {
6288         int page;
6289
6290         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
6291
6292         if (!view->page_cache)
6293                 return FALSE;
6294
6295         if (view->presentation &&
6296             view->presentation_state == EV_PRESENTATION_END) {
6297                 ev_view_reset_presentation_state (view);
6298                 return TRUE;
6299         }
6300
6301         if (view->presentation &&
6302             (view->presentation_state == EV_PRESENTATION_BLACK ||
6303              view->presentation_state == EV_PRESENTATION_WHITE)) {
6304                 ev_view_reset_presentation_state (view);
6305                 return FALSE;
6306         }
6307
6308         if (view->animation) {
6309                 ev_view_transition_animation_cancel (view->animation, view);
6310         }
6311
6312         ev_view_reset_presentation_state (view);
6313
6314         page = ev_page_cache_get_current_page (view->page_cache);
6315
6316         if (view->dual_page && !view->presentation)
6317                 page = page - 2;
6318         else
6319                 page = page - 1;
6320
6321         if (page >= 0) {
6322                 ev_page_cache_set_current_page (view->page_cache, page);
6323                 return TRUE;
6324         } else if (ev_view_get_dual_page (view) && page == -1) {
6325                 ev_page_cache_set_current_page (view->page_cache, 0);
6326                 return TRUE;
6327         } else {
6328                 return FALSE;
6329         }
6330 }
6331