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                      (gdouble doc_width,
 245                                                               gdouble doc_height,
 246                                                               int     target_width,
 247                                                               int     target_height,
 248                                                               int     vsb_width);
 249 static double   zoom_for_size_fit_height                     (gdouble doc_width,
 250                                                               gdouble doc_height,
 251                                                               int     target_width,
 252                                                               int     target_height,
 253                                                               int     vsb_height);
 254 static double   zoom_for_size_best_fit                       (gdouble doc_width,
 255                                                               gdouble 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_document_get_n_pages (view->document); 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_document_get_n_pages (view->document))
 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_document_get_n_pages (view->document) - 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_document_get_n_pages (view->document)
 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 get_doc_page_size (EvView  *view,
 869                    gint     page,
 870                    gdouble *width,
 871                    gdouble *height)
 872 {
 873         double w, h;
 874
 875         ev_document_get_page_size (view->document, page, &w, &h);
 876         if (view->rotation == 0 || view->rotation == 180) {
 877                 if (width) *width = w;
 878                 if (height) *height = h;
 879         } else {
 880                 if (width) *width = h;
 881                 if (height) *height = w;
 882         }
 883 }
 884
 885 static void
 886 view_point_to_doc_point (EvView *view,
 887                          GdkPoint *view_point,
 888                          GdkRectangle *page_area,
 889                          double  *doc_point_x,
 890                          double  *doc_point_y)
 891 {
 892         *doc_point_x = (double) (view_point->x - page_area->x) / view->scale;
 893         *doc_point_y = (double) (view_point->y - page_area->y) / view->scale;
 894 }
 895
 896 static void
 897 view_rect_to_doc_rect (EvView *view,
 898                        GdkRectangle *view_rect,
 899                        GdkRectangle *page_area,
 900                        EvRectangle  *doc_rect)
 901 {
 902         doc_rect->x1 = (double) (view_rect->x - page_area->x) / view->scale;
 903         doc_rect->y1 = (double) (view_rect->y - page_area->y) / view->scale;
 904         doc_rect->x2 = doc_rect->x1 + (double) view_rect->width / view->scale;
 905         doc_rect->y2 = doc_rect->y1 + (double) view_rect->height / view->scale;
 906 }
 907
 908 static gboolean
 909 doc_point_to_view_point (EvView       *view,
 910                          int           page,
 911                          EvPoint      *doc_point,
 912                          GdkPoint     *view_point)
 913 {
 914         GdkRectangle page_area;
 915         GtkBorder border;
 916         double x, y, view_x, view_y;
 917         gdouble width, height;
 918
 919         get_doc_page_size (view, page, &width, &height);
 920
 921         if (view->rotation == 0) {
 922                 x = doc_point->x;
 923                 y = doc_point->y;
 924         } else if (view->rotation == 90) {
 925                 x = width - doc_point->y;
 926                 y = doc_point->x;
 927         } else if (view->rotation == 180) {
 928                 x = width - doc_point->x;
 929                 y = height - doc_point->y;
 930         } else if (view->rotation == 270) {
 931                 x = doc_point->y;
 932                 y = height - doc_point->x;
 933         } else {
 934                 g_assert_not_reached ();
 935         }
 936
 937         get_page_extents (view, page, &page_area, &border);
 938
 939         view_x = x * view->scale;
 940         view_y = y * view->scale;
 941         view_point->x = view_x + page_area.x;
 942         view_point->y = view_y + page_area.y;
 943
 944         return (view_x > 0 && view_x <= page_area.width &&
 945                 view_y > 0 && view_y <= page_area.height);
 946 }
 947
 948 static void
 949 doc_rect_to_view_rect (EvView       *view,
 950                        int           page,
 951                        EvRectangle  *doc_rect,
 952                        GdkRectangle *view_rect)
 953 {
 954         GdkRectangle page_area;
 955         GtkBorder border;
 956         double x, y, w, h;
 957         gdouble width, height;
 958
 959         get_doc_page_size (view, page, &width, &height);
 960
 961         if (view->rotation == 0) {
 962                 x = doc_rect->x1;
 963                 y = doc_rect->y1;
 964                 w = doc_rect->x2 - doc_rect->x1;
 965                 h = doc_rect->y2 - doc_rect->y1;
 966         } else if (view->rotation == 90) {
 967                 x = width - doc_rect->y2;
 968                 y = doc_rect->x1;
 969                 w = doc_rect->y2 - doc_rect->y1;
 970                 h = doc_rect->x2 - doc_rect->x1;
 971         } else if (view->rotation == 180) {
 972                 x = width - doc_rect->x2;
 973                 y = height - doc_rect->y2;
 974                 w = doc_rect->x2 - doc_rect->x1;
 975                 h = doc_rect->y2 - doc_rect->y1;
 976         } else if (view->rotation == 270) {
 977                 x = doc_rect->y1;
 978                 y = height - doc_rect->x2;
 979                 w = doc_rect->y2 - doc_rect->y1;
 980                 h = doc_rect->x2 - doc_rect->x1;
 981         } else {
 982                 g_assert_not_reached ();
 983         }
 984
 985         get_page_extents (view, page, &page_area, &border);
 986
 987         view_rect->x = x * view->scale + page_area.x;
 988         view_rect->y = y * view->scale + page_area.y;
 989         view_rect->width = w * view->scale;
 990         view_rect->height = h * view->scale;
 991 }
 992
 993 static void
 994 find_page_at_location (EvView  *view,
 995                        gdouble  x,
 996                        gdouble  y,
 997                        gint    *page,
 998                        gint    *x_offset,
 999                        gint    *y_offset)
1000 {
1001         int i;
1002
1003         if (view->document == NULL)
1004                 return;
1005
1006         g_assert (page);
1007         g_assert (x_offset);
1008         g_assert (y_offset);
1009
1010         for (i = view->start_page; i <= view->end_page; i++) {
1011                 GdkRectangle page_area;
1012                 GtkBorder border;
1013
1014                 if (! get_page_extents (view, i, &page_area, &border))
1015                         continue;
1016
1017                 if ((x >= page_area.x + border.left) &&
1018                     (x < page_area.x + page_area.width - border.right) &&
1019                     (y >= page_area.y + border.top) &&
1020                     (y < page_area.y + page_area.height - border.bottom)) {
1021                         *page = i;
1022                         *x_offset = x - (page_area.x + border.left);
1023                         *y_offset = y - (page_area.y + border.top);
1024                         return;
1025                 }
1026         }
1027
1028         *page = -1;
1029 }
1030
1031 static gboolean
1032 location_in_text (EvView  *view,
1033                   gdouble  x,
1034                   gdouble  y)
1035 {
1036         GdkRegion *region;
1037         gint page = -1;
1038         gint x_offset = 0, y_offset = 0;
1039
1040         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1041
1042         if (page == -1)
1043                 return FALSE;
1044
1045         region = ev_pixbuf_cache_get_text_mapping (view->pixbuf_cache, page);
1046
1047         if (region)
1048                 return gdk_region_point_in (region, x_offset / view->scale, y_offset / view->scale);
1049         else
1050                 return FALSE;
1051 }
1052
1053 static int
1054 ev_view_get_width (EvView *view)
1055 {
1056         return GTK_WIDGET (view)->allocation.width;
1057 }
1058
1059 static int
1060 ev_view_get_height (EvView *view)
1061 {
1062         return GTK_WIDGET (view)->allocation.height;
1063 }
1064
1065 static gboolean
1066 location_in_selected_text (EvView  *view,
1067                            gdouble  x,
1068                            gdouble  y)
1069 {
1070         gint page = -1;
1071         gint x_offset = 0, y_offset = 0;
1072         EvViewSelection *selection;
1073         GList *l = NULL;
1074
1075         for (l = view->selection_info.selections; l != NULL; l = l->next) {
1076                 selection = (EvViewSelection *)l->data;
1077
1078                 find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1079
1080                 if (page != selection->page)
1081                         continue;
1082
1083                 if (selection->covered_region &&
1084                     gdk_region_point_in (selection->covered_region, x_offset, y_offset))
1085                         return TRUE;
1086         }
1087
1088         return FALSE;
1089 }
1090
1091 static gboolean
1092 get_doc_point_from_offset (EvView *view,
1093                            gint    page,
1094                            gint    x_offset,
1095                            gint    y_offset,
1096                            gint   *x_new,
1097                            gint   *y_new)
1098 {
1099         gdouble width, height;
1100         double x, y;
1101
1102         get_doc_page_size (view, page, &width, &height);
1103
1104         x_offset = x_offset / view->scale;
1105         y_offset = y_offset / view->scale;
1106
1107         if (view->rotation == 0) {
1108                 x = x_offset;
1109                 y = y_offset;
1110         } else if (view->rotation == 90) {
1111                 x = y_offset;
1112                 y = width - x_offset;
1113         } else if (view->rotation == 180) {
1114                 x = width - x_offset;
1115                 y = height - y_offset;
1116         } else if (view->rotation == 270) {
1117                 x = height - y_offset;
1118                 y = x_offset;
1119         } else {
1120                 g_assert_not_reached ();
1121         }
1122
1123         *x_new = x;
1124         *y_new = y;
1125
1126         return TRUE;
1127 }
1128
1129 static gboolean
1130 get_doc_point_from_location (EvView  *view,
1131                              gdouble  x,
1132                              gdouble  y,
1133                              gint    *page,
1134                              gint    *x_new,
1135                              gint    *y_new)
1136 {
1137         gint x_offset = 0, y_offset = 0;
1138
1139         x += view->scroll_x;
1140         y += view->scroll_y;
1141         find_page_at_location (view, x, y, page, &x_offset, &y_offset);
1142         if (*page == -1)
1143                 return FALSE;
1144
1145         return get_doc_point_from_offset (view, *page, x_offset, y_offset, x_new, y_new);
1146 }
1147
1148 static void
1149 ev_view_get_area_from_mapping (EvView       *view,
1150                                guint         page,
1151                                GList        *mapping_list,
1152                                gconstpointer data,
1153                                GdkRectangle *area)
1154 {
1155         EvMapping *mapping;
1156
1157         mapping = ev_mapping_list_find (mapping_list, data);
1158         doc_rect_to_view_rect (view, page, &mapping->area, area);
1159         area->x -= view->scroll_x;
1160         area->y -= view->scroll_y;
1161 }
1162
1163
1164 /*** Hyperref ***/
1165 static EvLink *
1166 ev_view_get_link_at_location (EvView  *view,
1167                               gdouble  x,
1168                               gdouble  y)
1169 {
1170         gint page = -1;
1171         gint x_new = 0, y_new = 0;
1172         GList *link_mapping;
1173
1174         if (!EV_IS_DOCUMENT_LINKS (view->document))
1175                 return NULL;
1176
1177         if (!get_doc_point_from_location (view, x, y, &page, &x_new, &y_new))
1178                 return NULL;
1179
1180         link_mapping = ev_pixbuf_cache_get_link_mapping (view->pixbuf_cache, page);
1181
1182         if (link_mapping)
1183                 return ev_mapping_list_get_data (link_mapping, x_new, y_new);
1184         else
1185                 return NULL;
1186 }
1187
1188 static void
1189 goto_fitr_dest (EvView *view, EvLinkDest *dest)
1190 {
1191         EvPoint doc_point;
1192         gdouble zoom, left, top;
1193         gboolean change_left, change_top;
1194
1195         left = ev_link_dest_get_left (dest, &change_left);
1196         top = ev_link_dest_get_top (dest, &change_top);
1197
1198         zoom = zoom_for_size_best_fit (ev_link_dest_get_right (dest) - left,
1199                                        ev_link_dest_get_bottom (dest) - top,
1200                                        ev_view_get_width (view),
1201                                        ev_view_get_height (view), 0, 0);
1202
1203         ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1204         ev_view_set_zoom (view, zoom, FALSE);
1205
1206         doc_point.x = change_left ? left : 0;
1207         doc_point.y = change_top ? top : 0;
1208
1209         view->current_page = ev_link_dest_get_page (dest);
1210         if (change_left || change_top)
1211                 view->pending_point = doc_point;
1212         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1213
1214         gtk_widget_queue_resize (GTK_WIDGET (view));
1215 }
1216
1217 static void
1218 goto_fitv_dest (EvView *view, EvLinkDest *dest)
1219 {
1220         EvPoint doc_point;
1221         gdouble doc_width, doc_height;
1222         gint page;
1223         double zoom, left;
1224         gboolean change_left;
1225
1226         page = ev_link_dest_get_page (dest);
1227         ev_document_get_page_size (view->document, page, &doc_width, &doc_height);
1228
1229         left = ev_link_dest_get_left (dest, &change_left);
1230         doc_point.x = change_left ? left : 0;
1231         doc_point.y = 0;
1232
1233         zoom = zoom_for_size_fit_height (doc_width - doc_point.x , doc_height,
1234                                          ev_view_get_width (view),
1235                                          ev_view_get_height (view), 0);
1236
1237         ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1238         ev_view_set_zoom (view, zoom, FALSE);
1239
1240         view->current_page = page;
1241         if (change_left)
1242                 view->pending_point = doc_point;
1243         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1244
1245         gtk_widget_queue_resize (GTK_WIDGET (view));
1246 }
1247
1248 static void
1249 goto_fith_dest (EvView *view, EvLinkDest *dest)
1250 {
1251         EvPoint doc_point;
1252         gdouble doc_width, doc_height;
1253         gint page;
1254         gdouble zoom, top;
1255         gboolean change_top;
1256
1257         page = ev_link_dest_get_page (dest);
1258         ev_document_get_page_size (view->document, page, &doc_width, &doc_height);
1259
1260         top = ev_link_dest_get_top (dest, &change_top);
1261
1262         doc_point.x = 0;
1263         doc_point.y = change_top ? top : 0;
1264
1265         zoom = zoom_for_size_fit_width (doc_width, top,
1266                                         ev_view_get_width (view),
1267                                         ev_view_get_height (view), 0);
1268
1269         ev_view_set_sizing_mode (view, EV_SIZING_FIT_WIDTH);
1270         ev_view_set_zoom (view, zoom, FALSE);
1271
1272         view->current_page = page;
1273         if (change_top)
1274                 view->pending_point = doc_point;
1275         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1276
1277         gtk_widget_queue_resize (GTK_WIDGET (view));
1278 }
1279
1280 static void
1281 goto_fit_dest (EvView *view, EvLinkDest *dest)
1282 {
1283         double zoom;
1284         gdouble doc_width, doc_height;
1285         int page;
1286
1287         page = ev_link_dest_get_page (dest);
1288         ev_document_get_page_size (view->document, page, &doc_width, &doc_height);
1289
1290         zoom = zoom_for_size_best_fit (doc_width, doc_height, ev_view_get_width (view),
1291                                        ev_view_get_height (view), 0, 0);
1292
1293         ev_view_set_sizing_mode (view, EV_SIZING_BEST_FIT);
1294         ev_view_set_zoom (view, zoom, FALSE);
1295
1296         view->current_page = page;
1297         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1298
1299         gtk_widget_queue_resize (GTK_WIDGET (view));
1300 }
1301
1302 static void
1303 goto_xyz_dest (EvView *view, EvLinkDest *dest)
1304 {
1305         EvPoint doc_point;
1306         gint page;
1307         gdouble zoom, left, top;
1308         gboolean change_zoom, change_left, change_top;
1309
1310         zoom = ev_link_dest_get_zoom (dest, &change_zoom);
1311         page = ev_link_dest_get_page (dest);
1312
1313         if (change_zoom && zoom > 1) {
1314                 ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1315                 ev_view_set_zoom (view, zoom, FALSE);
1316         }
1317
1318         left = ev_link_dest_get_left (dest, &change_left);
1319         top = ev_link_dest_get_top (dest, &change_top);
1320
1321         doc_point.x = change_left ? left : 0;
1322         doc_point.y = change_top ? top : 0;
1323
1324         view->current_page = page;
1325         if (change_left || change_top)
1326                 view->pending_point = doc_point;
1327         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1328
1329         gtk_widget_queue_resize (GTK_WIDGET (view));
1330 }
1331
1332 static void
1333 goto_dest (EvView *view, EvLinkDest *dest)
1334 {
1335         EvLinkDestType type;
1336         int page, n_pages, current_page;
1337
1338         page = ev_link_dest_get_page (dest);
1339         n_pages = ev_document_get_n_pages (view->document);
1340
1341         if (page < 0 || page >= n_pages)
1342                 return;
1343
1344         current_page = view->current_page;
1345
1346         type = ev_link_dest_get_dest_type (dest);
1347
1348         switch (type) {
1349                 case EV_LINK_DEST_TYPE_PAGE:
1350                         ev_page_cache_set_current_page (view->page_cache, page);
1351                         break;
1352                 case EV_LINK_DEST_TYPE_FIT:
1353                         goto_fit_dest (view, dest);
1354                         break;
1355                 case EV_LINK_DEST_TYPE_FITH:
1356                         goto_fith_dest (view, dest);
1357                         break;
1358                 case EV_LINK_DEST_TYPE_FITV:
1359                         goto_fitv_dest (view, dest);
1360                         break;
1361                 case EV_LINK_DEST_TYPE_FITR:
1362                         goto_fitr_dest (view, dest);
1363                         break;
1364                 case EV_LINK_DEST_TYPE_XYZ:
1365                         goto_xyz_dest (view, dest);
1366                         break;
1367                 case EV_LINK_DEST_TYPE_PAGE_LABEL:
1368                         ev_page_cache_set_page_label (view->page_cache, ev_link_dest_get_page_label (dest));
1369                         break;
1370                 default:
1371                         g_assert_not_reached ();
1372         }
1373
1374         if (current_page != view->current_page)
1375                 ev_page_cache_set_current_page (view->page_cache,
1376                                                 view->current_page);
1377 }
1378
1379 static void
1380 ev_view_goto_dest (EvView *view, EvLinkDest *dest)
1381 {
1382         EvLinkDestType type;
1383
1384         type = ev_link_dest_get_dest_type (dest);
1385
1386         if (type == EV_LINK_DEST_TYPE_NAMED) {
1387                 EvLinkDest  *dest2;
1388                 const gchar *named_dest;
1389
1390                 named_dest = ev_link_dest_get_named_dest (dest);
1391                 dest2 = ev_document_links_find_link_dest (EV_DOCUMENT_LINKS (view->document),
1392                                                           named_dest);
1393                 if (dest2) {
1394                         goto_dest (view, dest2);
1395                         g_object_unref (dest2);
1396                 }
1397
1398                 return;
1399         }
1400
1401         goto_dest (view, dest);
1402 }
1403
1404 void
1405 ev_view_handle_link (EvView *view, EvLink *link)
1406 {
1407         EvLinkAction    *action = NULL;
1408         EvLinkActionType type;
1409
1410         action = ev_link_get_action (link);
1411         if (!action)
1412                 return;
1413
1414         type = ev_link_action_get_action_type (action);
1415
1416         switch (type) {
1417                 case EV_LINK_ACTION_TYPE_GOTO_DEST: {
1418                         EvLinkDest *dest;
1419
1420                         g_signal_emit (view, signals[SIGNAL_HANDLE_LINK], 0, link);
1421
1422                         dest = ev_link_action_get_dest (action);
1423                         ev_view_goto_dest (view, dest);
1424                 }
1425                         break;
1426                 case EV_LINK_ACTION_TYPE_GOTO_REMOTE:
1427                 case EV_LINK_ACTION_TYPE_EXTERNAL_URI:
1428                 case EV_LINK_ACTION_TYPE_LAUNCH:
1429                 case EV_LINK_ACTION_TYPE_NAMED:
1430                         g_signal_emit (view, signals[SIGNAL_EXTERNAL_LINK], 0, action);
1431                         break;
1432         }
1433 }
1434
1435 gchar *
1436 ev_view_page_label_from_dest (EvView *view, EvLinkDest *dest)
1437 {
1438         EvLinkDestType type;
1439         gchar *msg = NULL;
1440
1441         type = ev_link_dest_get_dest_type (dest);
1442
1443         switch (type) {
1444                 case EV_LINK_DEST_TYPE_NAMED: {
1445                         EvLinkDest  *dest2;
1446                         const gchar *named_dest;
1447
1448                         named_dest = ev_link_dest_get_named_dest (dest);
1449                         dest2 = ev_document_links_find_link_dest (EV_DOCUMENT_LINKS (view->document),
1450                                                                   named_dest);
1451                         if (dest2) {
1452                                 msg = ev_document_get_page_label (view->document,
1453                                                                   ev_link_dest_get_page (dest2));
1454                                 g_object_unref (dest2);
1455                         }
1456                 }
1457
1458                         break;
1459                 case EV_LINK_DEST_TYPE_PAGE_LABEL: {
1460                         msg = g_strdup (ev_link_dest_get_page_label (dest));
1461                 }
1462                         break;
1463                 default:
1464                         msg = ev_document_get_page_label (view->document,
1465                                                           ev_link_dest_get_page (dest));
1466         }
1467
1468         return msg;
1469 }
1470
1471 static char *
1472 tip_from_action_named (EvLinkAction *action)
1473 {
1474         const gchar *name = ev_link_action_get_name (action);
1475
1476         if (g_ascii_strcasecmp (name, "FirstPage") == 0) {
1477                 return g_strdup (_("Go to first page"));
1478         } else if (g_ascii_strcasecmp (name, "PrevPage") == 0) {
1479                 return g_strdup (_("Go to previous page"));
1480         } else if (g_ascii_strcasecmp (name, "NextPage") == 0) {
1481                 return g_strdup (_("Go to next page"));
1482         } else if (g_ascii_strcasecmp (name, "LastPage") == 0) {
1483                 return g_strdup (_("Go to last page"));
1484         } else if (g_ascii_strcasecmp (name, "GoToPage") == 0) {
1485                 return g_strdup (_("Go to page"));
1486         } else if (g_ascii_strcasecmp (name, "Find") == 0) {
1487                 return g_strdup (_("Find"));
1488         }
1489
1490         return NULL;
1491 }
1492
1493 static char *
1494 tip_from_link (EvView *view, EvLink *link)
1495 {
1496         EvLinkAction *action;
1497         EvLinkActionType type;
1498         char *msg = NULL;
1499         char *page_label;
1500         const char *title;
1501
1502         action = ev_link_get_action (link);
1503         title = ev_link_get_title (link);
1504
1505         if (!action)
1506                 return title ? g_strdup (title) : NULL;
1507
1508         type = ev_link_action_get_action_type (action);
1509
1510         switch (type) {
1511                 case EV_LINK_ACTION_TYPE_GOTO_DEST:
1512                         page_label = ev_view_page_label_from_dest (view,
1513                                                                    ev_link_action_get_dest (action));
1514                         if (page_label) {
1515                                 msg = g_strdup_printf (_("Go to page %s"), page_label);
1516                                 g_free (page_label);
1517                         }
1518                         break;
1519                 case EV_LINK_ACTION_TYPE_GOTO_REMOTE:
1520                         if (title) {
1521                                 msg = g_strdup_printf (_("Go to %s on file “%s”"), title,
1522                                                        ev_link_action_get_filename (action));
1523                         } else {
1524                                 msg = g_strdup_printf (_("Go to file “%s”"),
1525                                                        ev_link_action_get_filename (action));
1526                         }
1527                         break;
1528                 case EV_LINK_ACTION_TYPE_EXTERNAL_URI:
1529                         msg = g_strdup (ev_link_action_get_uri (action));
1530                         break;
1531                 case EV_LINK_ACTION_TYPE_LAUNCH:
1532                         msg = g_strdup_printf (_("Launch %s"),
1533                                                ev_link_action_get_filename (action));
1534                         break;
1535                 case EV_LINK_ACTION_TYPE_NAMED:
1536                         msg = tip_from_action_named (action);
1537                         break;
1538                 default:
1539                         if (title)
1540                                 msg = g_strdup (title);
1541                         break;
1542         }
1543
1544         return msg;
1545 }
1546
1547 static void
1548 ev_view_handle_cursor_over_xy (EvView *view, gint x, gint y)
1549 {
1550         EvLink       *link;
1551         EvFormField  *field;
1552         EvAnnotation *annot = NULL;
1553
1554         if (view->cursor == EV_VIEW_CURSOR_HIDDEN)
1555                 return;
1556
1557         if (view->drag_info.in_drag) {
1558                 if (view->cursor != EV_VIEW_CURSOR_DRAG)
1559                         ev_view_set_cursor (view, EV_VIEW_CURSOR_DRAG);
1560                 return;
1561         }
1562
1563         if (view->scroll_info.autoscrolling) {
1564                 if (view->cursor != EV_VIEW_CURSOR_AUTOSCROLL)
1565                         ev_view_set_cursor (view, EV_VIEW_CURSOR_AUTOSCROLL);
1566                 return;
1567         }
1568
1569         link = ev_view_get_link_at_location (view, x, y);
1570         if (link) {
1571                 ev_view_set_cursor (view, EV_VIEW_CURSOR_LINK);
1572         } else if ((field = ev_view_get_form_field_at_location (view, x, y))) {
1573                 if (field->is_read_only) {
1574                         if (view->cursor == EV_VIEW_CURSOR_LINK ||
1575                             view->cursor == EV_VIEW_CURSOR_IBEAM ||
1576                             view->cursor == EV_VIEW_CURSOR_DRAG)
1577                                 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
1578                 } else if (EV_IS_FORM_FIELD_TEXT (field)) {
1579                         ev_view_set_cursor (view, EV_VIEW_CURSOR_IBEAM);
1580                 } else {
1581                         ev_view_set_cursor (view, EV_VIEW_CURSOR_LINK);
1582                 }
1583         } else if ((annot = ev_view_get_annotation_at_location (view, x, y))) {
1584                 ev_view_set_cursor (view, EV_VIEW_CURSOR_LINK);
1585         } else if (location_in_text (view, x + view->scroll_x, y + view->scroll_y)) {
1586                 ev_view_set_cursor (view, EV_VIEW_CURSOR_IBEAM);
1587         } else {
1588                 if (view->cursor == EV_VIEW_CURSOR_LINK ||
1589                     view->cursor == EV_VIEW_CURSOR_IBEAM ||
1590                     view->cursor == EV_VIEW_CURSOR_DRAG ||
1591                     view->cursor == EV_VIEW_CURSOR_AUTOSCROLL)
1592                         ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
1593         }
1594
1595         if (link || annot)
1596                 g_object_set (view, "has-tooltip", TRUE, NULL);
1597 }
1598
1599 /*** Images ***/
1600 static EvImage *
1601 ev_view_get_image_at_location (EvView  *view,
1602                                gdouble  x,
1603                                gdouble  y)
1604 {
1605         gint page = -1;
1606         gint x_new = 0, y_new = 0;
1607         GList *image_mapping;
1608
1609         if (!EV_IS_DOCUMENT_IMAGES (view->document))
1610                 return NULL;
1611
1612         if (!get_doc_point_from_location (view, x, y, &page, &x_new, &y_new))
1613                 return NULL;
1614
1615         image_mapping = ev_pixbuf_cache_get_image_mapping (view->pixbuf_cache, page);
1616
1617         if (image_mapping)
1618                 return ev_mapping_list_get_data (image_mapping, x_new, y_new);
1619         else
1620                 return NULL;
1621 }
1622
1623 /*** Forms ***/
1624 static EvFormField *
1625 ev_view_get_form_field_at_location (EvView  *view,
1626                                     gdouble  x,
1627                                     gdouble  y)
1628 {
1629         gint page = -1;
1630         gint x_new = 0, y_new = 0;
1631         GList *forms_mapping;
1632
1633         if (!EV_IS_DOCUMENT_FORMS (view->document))
1634                 return NULL;
1635
1636         if (!get_doc_point_from_location (view, x, y, &page, &x_new, &y_new))
1637                 return NULL;
1638
1639         forms_mapping = ev_pixbuf_cache_get_form_field_mapping (view->pixbuf_cache, page);
1640
1641         if (forms_mapping)
1642                 return ev_mapping_list_get_data (forms_mapping, x_new, y_new);
1643         else
1644                 return NULL;
1645 }
1646
1647 static GdkRegion *
1648 ev_view_form_field_get_region (EvView      *view,
1649                                EvFormField *field)
1650 {
1651         GdkRectangle view_area;
1652         GList       *forms_mapping;
1653
1654         forms_mapping = ev_pixbuf_cache_get_form_field_mapping (view->pixbuf_cache,
1655                                                                 field->page->index);
1656         ev_view_get_area_from_mapping (view, field->page->index,
1657                                        forms_mapping,
1658                                        field, &view_area);
1659
1660         return gdk_region_rectangle (&view_area);
1661 }
1662
1663 static gboolean
1664 ev_view_forms_remove_widgets (EvView *view)
1665 {
1666         ev_view_remove_all (view);
1667
1668         return FALSE;
1669 }
1670
1671 static void
1672 ev_view_form_field_destroy (GtkWidget *widget,
1673                             EvView    *view)
1674 {
1675         g_idle_add ((GSourceFunc)ev_view_forms_remove_widgets, view);
1676 }
1677
1678 static GtkWidget *
1679 ev_view_form_field_button_create_widget (EvView      *view,
1680                                          EvFormField *field)
1681 {
1682         EvFormFieldButton *field_button = EV_FORM_FIELD_BUTTON (field);
1683         GdkRegion         *field_region = NULL;
1684
1685         switch (field_button->type) {
1686                 case EV_FORM_FIELD_BUTTON_PUSH:
1687                         return NULL;
1688                 case EV_FORM_FIELD_BUTTON_CHECK:
1689                 case EV_FORM_FIELD_BUTTON_RADIO: {
1690                         gboolean  state;
1691                         GList    *forms_mapping, *l;
1692
1693                         state = ev_document_forms_form_field_button_get_state (EV_DOCUMENT_FORMS (view->document),
1694                                                                                field);
1695
1696                         /* FIXME: it actually depends on NoToggleToOff flags */
1697                         if (field_button->type == EV_FORM_FIELD_BUTTON_RADIO &&
1698                             state && field_button->state)
1699                                 return NULL;
1700
1701                         field_region = ev_view_form_field_get_region (view, field);
1702
1703                         /* For radio buttons and checkbox buttons that are in a set
1704                          * we need to update also the region for the current selected item
1705                          */
1706                         forms_mapping = ev_pixbuf_cache_get_form_field_mapping (view->pixbuf_cache,
1707                                                                                 field->page->index);
1708                         for (l = forms_mapping; l; l = g_list_next (l)) {
1709                                 EvFormField *button = ((EvMapping *)(l->data))->data;
1710                                 GdkRegion   *button_region;
1711
1712                                 if (button->id == field->id)
1713                                         continue;
1714
1715                                 /* FIXME: only buttons in the same group should be updated */
1716                                 if (!EV_IS_FORM_FIELD_BUTTON (button) ||
1717                                     EV_FORM_FIELD_BUTTON (button)->type != field_button->type ||
1718                                     EV_FORM_FIELD_BUTTON (button)->state != TRUE)
1719                                         continue;
1720
1721                                 button_region = ev_view_form_field_get_region (view, button);
1722                                 gdk_region_union (field_region, button_region);
1723                                 gdk_region_destroy (button_region);
1724                         }
1725
1726                         ev_document_forms_form_field_button_set_state (EV_DOCUMENT_FORMS (view->document),
1727                                                                        field, !state);
1728                         field_button->state = !state;
1729                 }
1730                         break;
1731         }
1732
1733         ev_view_reload_page (view, field->page->index, field_region);
1734         gdk_region_destroy (field_region);
1735
1736         return NULL;
1737 }
1738
1739 static void
1740 ev_view_form_field_text_save (EvView    *view,
1741                               GtkWidget *widget)
1742 {
1743         EvFormField *field;
1744
1745         if (!view->document)
1746                 return;
1747
1748         field = g_object_get_data (G_OBJECT (widget), "form-field");
1749
1750         if (field->changed) {
1751                 EvFormFieldText *field_text = EV_FORM_FIELD_TEXT (field);
1752                 GdkRegion       *field_region;
1753
1754                 field_region = ev_view_form_field_get_region (view, field);
1755
1756                 ev_document_forms_form_field_text_set_text (EV_DOCUMENT_FORMS (view->document),
1757                                                             field, field_text->text);
1758                 field->changed = FALSE;
1759                 ev_view_reload_page (view, field->page->index, field_region);
1760                 gdk_region_destroy (field_region);
1761         }
1762 }
1763
1764 static void
1765 ev_view_form_field_text_changed (GtkWidget   *widget,
1766                                  EvFormField *field)
1767 {
1768         EvFormFieldText *field_text = EV_FORM_FIELD_TEXT (field);
1769         gchar           *text = NULL;
1770
1771         if (GTK_IS_ENTRY (widget)) {
1772                 text = g_strdup (gtk_entry_get_text (GTK_ENTRY (widget)));
1773         } else if (GTK_IS_TEXT_BUFFER (widget)) {
1774                 GtkTextIter start, end;
1775
1776                 gtk_text_buffer_get_bounds (GTK_TEXT_BUFFER (widget), &start, &end);
1777                 text = gtk_text_buffer_get_text (GTK_TEXT_BUFFER (widget),
1778                                                  &start, &end, FALSE);
1779         }
1780
1781         if (!field_text->text ||
1782             (field_text->text && g_ascii_strcasecmp (field_text->text, text) != 0)) {
1783                 g_free (field_text->text);
1784                 field_text->text = text;
1785                 field->changed = TRUE;
1786         }
1787 }
1788
1789 static GtkWidget *
1790 ev_view_form_field_text_create_widget (EvView      *view,
1791                                        EvFormField *field)
1792 {
1793         EvFormFieldText *field_text = EV_FORM_FIELD_TEXT (field);
1794         GtkWidget       *text = NULL;
1795         gchar           *txt;
1796
1797         txt = ev_document_forms_form_field_text_get_text (EV_DOCUMENT_FORMS (view->document),
1798                                                           field);
1799
1800         switch (field_text->type) {
1801                 case EV_FORM_FIELD_TEXT_FILE_SELECT:
1802                         /* TODO */
1803                 case EV_FORM_FIELD_TEXT_NORMAL:
1804                         text = gtk_entry_new ();
1805                         gtk_entry_set_has_frame (GTK_ENTRY (text), FALSE);
1806                         gtk_entry_set_max_length (GTK_ENTRY (text), field_text->max_len);
1807                         gtk_entry_set_visibility (GTK_ENTRY (text), !field_text->is_password);
1808
1809                         if (txt) {
1810                                 gtk_entry_set_text (GTK_ENTRY (text), txt);
1811                                 g_free (txt);
1812                         }
1813
1814                         g_signal_connect (text, "changed",
1815                                           G_CALLBACK (ev_view_form_field_text_changed),
1816                                           field);
1817                         g_signal_connect_after (text, "activate",
1818                                                 G_CALLBACK (ev_view_form_field_destroy),
1819                                                 view);
1820                         break;
1821                 case EV_FORM_FIELD_TEXT_MULTILINE: {
1822                         GtkTextBuffer *buffer;
1823
1824                         text = gtk_text_view_new ();
1825                         buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (text));
1826
1827                         if (txt) {
1828                                 gtk_text_buffer_set_text (buffer, txt, -1);
1829                                 g_free (txt);
1830                         }
1831
1832                         g_signal_connect (buffer, "changed",
1833                                           G_CALLBACK (ev_view_form_field_text_changed),
1834                                           field);
1835                 }
1836                         break;
1837         }
1838
1839         g_object_weak_ref (G_OBJECT (text),
1840                            (GWeakNotify)ev_view_form_field_text_save,
1841                            view);
1842
1843         return text;
1844 }
1845
1846 static void
1847 ev_view_form_field_choice_save (EvView    *view,
1848                                 GtkWidget *widget)
1849 {
1850         EvFormField *field;
1851
1852         if (!view->document)
1853                 return;
1854
1855         field = g_object_get_data (G_OBJECT (widget), "form-field");
1856
1857         if (field->changed) {
1858                 GList             *l;
1859                 EvFormFieldChoice *field_choice = EV_FORM_FIELD_CHOICE (field);
1860                 GdkRegion         *field_region;
1861
1862                 field_region = ev_view_form_field_get_region (view, field);
1863
1864                 if (field_choice->is_editable) {
1865                         ev_document_forms_form_field_choice_set_text (EV_DOCUMENT_FORMS (view->document),
1866                                                                       field, field_choice->text);
1867                 } else {
1868                         ev_document_forms_form_field_choice_unselect_all (EV_DOCUMENT_FORMS (view->document), field);
1869                         for (l = field_choice->selected_items; l; l = g_list_next (l)) {
1870                                 ev_document_forms_form_field_choice_select_item (EV_DOCUMENT_FORMS (view->document),
1871                                                                                  field,
1872                                                                                  GPOINTER_TO_INT (l->data));
1873                         }
1874                 }
1875                 field->changed = FALSE;
1876                 ev_view_reload_page (view, field->page->index, field_region);
1877                 gdk_region_destroy (field_region);
1878         }
1879 }
1880
1881 static void
1882 ev_view_form_field_choice_changed (GtkWidget   *widget,
1883                                    EvFormField *field)
1884 {
1885         EvFormFieldChoice *field_choice = EV_FORM_FIELD_CHOICE (field);
1886
1887         if (GTK_IS_COMBO_BOX (widget)) {
1888                 gint item;
1889
1890                 item = gtk_combo_box_get_active (GTK_COMBO_BOX (widget));
1891                 if (!field_choice->selected_items ||
1892                     GPOINTER_TO_INT (field_choice->selected_items->data) != item) {
1893                         g_list_free (field_choice->selected_items);
1894                         field_choice->selected_items = NULL;
1895                         field_choice->selected_items = g_list_prepend (field_choice->selected_items,
1896                                                                        GINT_TO_POINTER (item));
1897                         field->changed = TRUE;
1898                 }
1899
1900                 if (GTK_IS_COMBO_BOX_ENTRY (widget)) {
1901                         gchar *text;
1902
1903                         text = gtk_combo_box_get_active_text (GTK_COMBO_BOX (widget));
1904                         if (!field_choice->text ||
1905                             (field_choice->text && g_ascii_strcasecmp (field_choice->text, text) != 0)) {
1906                                 g_free (field_choice->text);
1907                                 field_choice->text = text;
1908                                 field->changed = TRUE;
1909                         }
1910                 }
1911         } else if (GTK_IS_TREE_SELECTION (widget)) {
1912                 GtkTreeSelection *selection = GTK_TREE_SELECTION (widget);
1913                 GtkTreeModel     *model;
1914                 GList            *items, *l;
1915
1916                 items = gtk_tree_selection_get_selected_rows (selection, &model);
1917                 g_list_free (field_choice->selected_items);
1918                 field_choice->selected_items = NULL;
1919
1920                 for (l = items; l && l->data; l = g_list_next (l)) {
1921                         GtkTreeIter  iter;
1922                         GtkTreePath *path = (GtkTreePath *)l->data;
1923                         gint         item;
1924
1925                         gtk_tree_model_get_iter (model, &iter, path);
1926                         gtk_tree_model_get (model, &iter, 1, &item, -1);
1927
1928                         field_choice->selected_items = g_list_prepend (field_choice->selected_items,
1929                                                                        GINT_TO_POINTER (item));
1930
1931                         gtk_tree_path_free (path);
1932                 }
1933
1934                 g_list_free (items);
1935
1936                 field->changed = TRUE;
1937         }
1938 }
1939
1940 static GtkWidget *
1941 ev_view_form_field_choice_create_widget (EvView      *view,
1942                                          EvFormField *field)
1943 {
1944         EvFormFieldChoice *field_choice = EV_FORM_FIELD_CHOICE (field);
1945         GtkWidget         *choice;
1946         GtkTreeModel      *model;
1947         gint               n_items, i;
1948         gint               selected_item = 0;
1949
1950         n_items = ev_document_forms_form_field_choice_get_n_items (EV_DOCUMENT_FORMS (view->document),
1951                                                                    field);
1952         model = GTK_TREE_MODEL (gtk_list_store_new (2, G_TYPE_STRING, G_TYPE_INT));
1953         for (i = 0; i < n_items; i++) {
1954                 GtkTreeIter iter;
1955                 gchar      *item;
1956
1957                 item = ev_document_forms_form_field_choice_get_item (EV_DOCUMENT_FORMS (view->document),
1958                                                                      field, i);
1959                 if (ev_document_forms_form_field_choice_is_item_selected (
1960                             EV_DOCUMENT_FORMS (view->document), field, i)) {
1961                         selected_item = i;
1962                         /* FIXME: we need a get_selected_items function in poppler */
1963                         field_choice->selected_items = g_list_prepend (field_choice->selected_items,
1964                                                                        GINT_TO_POINTER (i));
1965                 }
1966
1967                 if (item) {
1968                         gtk_list_store_append (GTK_LIST_STORE (model), &iter);
1969                         gtk_list_store_set (GTK_LIST_STORE (model), &iter,
1970                                             0, item,
1971                                             1, i,
1972                                             -1);
1973                         g_free (item);
1974                 }
1975         }
1976
1977         if (field_choice->type == EV_FORM_FIELD_CHOICE_LIST) {
1978                 GtkCellRenderer  *renderer;
1979                 GtkWidget        *tree_view;
1980                 GtkTreeSelection *selection;
1981
1982                 tree_view = gtk_tree_view_new_with_model (model);
1983                 gtk_tree_view_set_headers_visible (GTK_TREE_VIEW (tree_view), FALSE);
1984
1985                 selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (tree_view));
1986                 if (field_choice->multi_select) {
1987                         gtk_tree_selection_set_mode (selection, GTK_SELECTION_MULTIPLE);
1988                 }
1989
1990                 /* TODO: set selected items */
1991
1992                 renderer = gtk_cell_renderer_text_new ();
1993                 gtk_tree_view_insert_column_with_attributes (GTK_TREE_VIEW (tree_view),
1994                                                              0,
1995                                                              "choix", renderer,
1996                                                              "text", 0,
1997                                                              NULL);
1998
1999                 choice = gtk_scrolled_window_new (NULL, NULL);
2000                 gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (choice),
2001                                                 GTK_POLICY_AUTOMATIC,
2002                                                 GTK_POLICY_AUTOMATIC);
2003                 gtk_container_add (GTK_CONTAINER (choice), tree_view);
2004                 gtk_widget_show (tree_view);
2005
2006                 g_signal_connect (selection, "changed",
2007                                   G_CALLBACK (ev_view_form_field_choice_changed),
2008                                   field);
2009                 g_signal_connect_after (selection, "changed",
2010                                         G_CALLBACK (ev_view_form_field_destroy),
2011                                         view);
2012         } else if (field_choice->is_editable) { /* ComboBoxEntry */
2013                 gchar *text;
2014
2015                 choice = gtk_combo_box_entry_new_with_model (model, 0);
2016                 text = ev_document_forms_form_field_choice_get_text (EV_DOCUMENT_FORMS (view->document), field);
2017                 if (text) {
2018                         gtk_entry_set_text (GTK_ENTRY (gtk_bin_get_child (GTK_BIN (choice))), text);
2019                         g_free (text);
2020                 }
2021
2022                 g_signal_connect (choice, "changed",
2023                                   G_CALLBACK (ev_view_form_field_choice_changed),
2024                                   field);
2025                 g_signal_connect_after (GTK_BIN(choice)->child, "activate",
2026                                         G_CALLBACK (ev_view_form_field_destroy),
2027                                         view);
2028         } else { /* ComboBoxText */
2029                 GtkCellRenderer *renderer;
2030
2031                 choice = gtk_combo_box_new_with_model (model);
2032                 renderer = gtk_cell_renderer_text_new ();
2033                 gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (choice),
2034                                             renderer, TRUE);
2035                 gtk_cell_layout_set_attributes (GTK_CELL_LAYOUT (choice),
2036                                                 renderer,
2037                                                 "text", 0,
2038                                                 NULL);
2039                 gtk_combo_box_set_active (GTK_COMBO_BOX (choice), selected_item);
2040                 gtk_combo_box_popup (GTK_COMBO_BOX (choice));
2041
2042                 g_signal_connect (choice, "changed",
2043                                   G_CALLBACK (ev_view_form_field_choice_changed),
2044                                   field);
2045                 g_signal_connect_after (choice, "changed",
2046                                         G_CALLBACK (ev_view_form_field_destroy),
2047                                         view);
2048         }
2049
2050         g_object_unref (model);
2051
2052         g_object_weak_ref (G_OBJECT (choice),
2053                            (GWeakNotify)ev_view_form_field_choice_save,
2054                            view);
2055
2056         return choice;
2057 }
2058
2059 static void
2060 ev_view_handle_form_field (EvView      *view,
2061                            EvFormField *field,
2062                            gdouble      x,
2063                            gdouble      y)
2064 {
2065         GtkWidget   *field_widget = NULL;
2066         GList       *form_field_mapping;
2067         GdkRectangle view_area;
2068
2069         if (field->is_read_only)
2070                 return;
2071
2072         if (EV_IS_FORM_FIELD_BUTTON (field)) {
2073                 field_widget = ev_view_form_field_button_create_widget (view, field);
2074         } else if (EV_IS_FORM_FIELD_TEXT (field)) {
2075                 field_widget = ev_view_form_field_text_create_widget (view, field);
2076         } else if (EV_IS_FORM_FIELD_CHOICE (field)) {
2077                 field_widget = ev_view_form_field_choice_create_widget (view, field);
2078         } else if (EV_IS_FORM_FIELD_SIGNATURE (field)) {
2079                 /* TODO */
2080         }
2081
2082         /* Form field doesn't require a widget */
2083         if (!field_widget)
2084                 return;
2085
2086         g_object_set_data_full (G_OBJECT (field_widget), "form-field",
2087                                 g_object_ref (field),
2088                                 (GDestroyNotify)g_object_unref);
2089
2090         form_field_mapping = ev_pixbuf_cache_get_form_field_mapping (view->pixbuf_cache, field->page->index);
2091         ev_view_get_area_from_mapping (view, field->page->index,
2092                                        form_field_mapping,
2093                                        field, &view_area);
2094
2095         gtk_layout_put (GTK_LAYOUT (view), field_widget, view_area.x, view_area.y);
2096         gtk_widget_show (field_widget);
2097         gtk_widget_grab_focus (field_widget);
2098 }
2099
2100 /* Annotations */
2101 static EvViewWindowChild *
2102 ev_view_get_window_child (EvView    *view,
2103                           GtkWidget *window)
2104 {
2105         GList *children = view->window_children;
2106
2107         while (children) {
2108                 EvViewWindowChild *child;
2109
2110                 child = (EvViewWindowChild *)children->data;
2111                 children = children->next;
2112
2113                 if (child->window == window)
2114                         return child;
2115         }
2116
2117         return NULL;
2118 }
2119
2120 static void
2121 ev_view_window_child_move (EvView            *view,
2122                            EvViewWindowChild *child,
2123                            gint               x,
2124                            gint               y)
2125 {
2126         child->x = x;
2127         child->y = y;
2128         gtk_window_move (GTK_WINDOW (child->window),
2129                          MAX (child->parent_x, x),
2130                          MAX (child->parent_y, y));
2131 }
2132
2133 static void
2134 ev_view_window_child_move_with_parent (EvView    *view,
2135                                        GtkWidget *window)
2136 {
2137         EvViewWindowChild *child;
2138         gint               root_x, root_y;
2139
2140         child = ev_view_get_window_child (view, window);
2141         gdk_window_get_origin (gtk_widget_get_window (GTK_WIDGET (view)),
2142                                &root_x, &root_y);
2143         if (root_x != child->parent_x || root_y != child->parent_y) {
2144                 gint dest_x, dest_y;
2145
2146                 dest_x = child->x + (root_x - child->parent_x);
2147                 dest_y = child->y + (root_y - child->parent_y);
2148                 child->parent_x = root_x;
2149                 child->parent_y = root_y;
2150                 ev_view_window_child_move (view, child, dest_x, dest_y);
2151         }
2152
2153         if (child->visible && !GTK_WIDGET_VISIBLE (window))
2154                 gtk_widget_show (window);
2155 }
2156
2157 static void
2158 ev_view_window_child_put (EvView    *view,
2159                           GtkWidget *window,
2160                           guint      page,
2161                           gint       x,
2162                           gint       y,
2163                           gdouble    orig_x,
2164                           gdouble    orig_y)
2165 {
2166         EvViewWindowChild *child;
2167         gint               root_x, root_y;
2168
2169         gdk_window_get_origin (gtk_widget_get_window (GTK_WIDGET (view)),
2170                                &root_x, &root_y);
2171
2172         child = g_new0 (EvViewWindowChild, 1);
2173         child->window = window;
2174         child->page = page;
2175         child->orig_x = orig_x;
2176         child->orig_y = orig_y;
2177         child->parent_x = root_x;
2178         child->parent_y = root_y;
2179         child->visible = ev_annotation_window_is_open (EV_ANNOTATION_WINDOW (window));
2180         ev_view_window_child_move (view, child, x + root_x, y + root_y);
2181
2182         if (child->visible)
2183                 gtk_widget_show (window);
2184         else
2185                 gtk_widget_hide (window);
2186
2187         view->window_children = g_list_append (view->window_children, child);
2188 }
2189
2190 static EvViewWindowChild *
2191 ev_view_find_window_child_for_annot (EvView       *view,
2192                                      guint         page,
2193                                      EvAnnotation *annot)
2194 {
2195         GList *children = view->window_children;
2196
2197         while (children) {
2198                 EvViewWindowChild *child;
2199                 EvAnnotation      *wannot;
2200
2201                 child = (EvViewWindowChild *)children->data;
2202                 children = children->next;
2203
2204                 if (child->page != page)
2205                         continue;
2206
2207                 wannot = ev_annotation_window_get_annotation (EV_ANNOTATION_WINDOW (child->window));
2208                 if (wannot == annot || strcmp (wannot->name, annot->name) == 0)
2209                         return child;
2210         }
2211
2212         return NULL;
2213 }
2214
2215 static void
2216 ev_view_window_children_free (EvView *view)
2217 {
2218         GList *l;
2219
2220         if (!view->window_children)
2221                 return;
2222
2223         for (l = view->window_children; l && l->data; l = g_list_next (l)) {
2224                 EvViewWindowChild *child;
2225
2226                 child = (EvViewWindowChild *)l->data;
2227                 gtk_widget_destroy (GTK_WIDGET (child->window));
2228                 g_free (child);
2229         }
2230         g_list_free (view->window_children);
2231         view->window_children = NULL;
2232         view->window_child_focus = NULL;
2233 }
2234
2235 static void
2236 annotation_window_grab_focus (GtkWidget *widget,
2237                               EvView    *view)
2238 {
2239         if (view->window_child_focus)
2240                 ev_annotation_window_ungrab_focus (EV_ANNOTATION_WINDOW (view->window_child_focus->window));
2241         view->window_child_focus = ev_view_get_window_child (view, widget);
2242 }
2243
2244 static void
2245 annotation_window_closed (EvAnnotationWindow *window,
2246                           EvView             *view)
2247 {
2248         EvViewWindowChild *child;
2249
2250         child = ev_view_get_window_child (view, GTK_WIDGET (window));
2251         child->visible = FALSE;
2252 }
2253
2254 static void
2255 annotation_window_moved (EvAnnotationWindow *window,
2256                          gint                x,
2257                          gint                y,
2258                          EvView             *view)
2259 {
2260         EvViewWindowChild *child;
2261         GdkRectangle       page_area;
2262         GtkBorder          border;
2263         GdkRectangle       view_rect;
2264         EvRectangle        doc_rect;
2265         gint               width, height;
2266
2267         child = ev_view_get_window_child (view, GTK_WIDGET (window));
2268         if (child->x == x && child->y == y)
2269                 return;
2270
2271         child->moved = TRUE;
2272         child->x = x;
2273         child->y = y;
2274
2275         /* Window has been moved by the user,
2276          * we have to set a new origin in doc coords
2277          */
2278         gtk_window_get_size (GTK_WINDOW (window), &width, &height);
2279         view_rect.x = (x - child->parent_x) + view->scroll_x;
2280         view_rect.y = (y - child->parent_y) + view->scroll_y;
2281         view_rect.width = width;
2282         view_rect.height = height;
2283
2284         get_page_extents (view, child->page, &page_area, &border);
2285         view_rect_to_doc_rect (view, &view_rect, &page_area, &doc_rect);
2286         child->orig_x = doc_rect.x1;
2287         child->orig_y = doc_rect.y1;
2288 }
2289
2290 static void
2291 ev_view_annotation_save (EvView       *view,
2292                          EvAnnotation *annot)
2293 {
2294         if (!view->document)
2295                 return;
2296
2297         if (!annot->changed)
2298                 return;
2299
2300         ev_document_annotations_annotation_set_contents (EV_DOCUMENT_ANNOTATIONS (view->document),
2301                                                          annot, annot->contents);
2302         annot->changed = FALSE;
2303 }
2304
2305 static void
2306 show_annotation_windows (EvView *view,
2307                          gint    page)
2308 {
2309         GList     *annots, *l;
2310         GtkWindow *parent;
2311
2312         parent = GTK_WINDOW (gtk_widget_get_toplevel (GTK_WIDGET (view)));
2313
2314         annots = ev_pixbuf_cache_get_annots_mapping (view->pixbuf_cache, page);
2315
2316         for (l = annots; l && l->data; l = g_list_next (l)) {
2317                 EvAnnotation      *annot;
2318                 EvViewWindowChild *child;
2319                 GtkWidget         *window;
2320                 EvRectangle       *doc_rect;
2321                 GdkRectangle       view_rect;
2322
2323                 annot = ((EvMapping *)(l->data))->data;
2324
2325                 if (!EV_IS_ANNOTATION_MARKUP (annot))
2326                         continue;
2327
2328                 if (!ev_annotation_markup_has_popup (EV_ANNOTATION_MARKUP (annot)))
2329                         continue;
2330
2331                 window = g_object_get_data (G_OBJECT (annot), "popup");
2332                 if (window) {
2333                         ev_view_window_child_move_with_parent (view, window);
2334                         continue;
2335                 }
2336
2337                 /* Look if we already have a popup for this annot */
2338                 child = ev_view_find_window_child_for_annot (view, page, annot);
2339                 window = child ? child->window : NULL;
2340                 if (window) {
2341                         ev_annotation_window_set_annotation (EV_ANNOTATION_WINDOW (window), annot);
2342                         g_object_set_data (G_OBJECT (annot), "popup", window);
2343                         ev_view_window_child_move_with_parent (view, window);
2344                 } else {
2345                         window = ev_annotation_window_new (annot, parent);
2346                         g_signal_connect (window, "grab_focus",
2347                                           G_CALLBACK (annotation_window_grab_focus),
2348                                           view);
2349                         g_signal_connect (window, "closed",
2350                                           G_CALLBACK (annotation_window_closed),
2351                                           view);
2352                         g_signal_connect (window, "moved",
2353                                           G_CALLBACK (annotation_window_moved),
2354                                           view);
2355                         g_object_set_data (G_OBJECT (annot), "popup", window);
2356
2357                         doc_rect = (EvRectangle *)ev_annotation_window_get_rectangle (EV_ANNOTATION_WINDOW (window));
2358                         doc_rect_to_view_rect (view, page, doc_rect, &view_rect);
2359                         view_rect.x -= view->scroll_x;
2360                         view_rect.y -= view->scroll_y;
2361
2362                         ev_view_window_child_put (view, window, page,
2363                                                   view_rect.x, view_rect.y,
2364                                                   doc_rect->x1, doc_rect->y1);
2365
2366                         g_object_weak_ref (G_OBJECT (annot),
2367                                            (GWeakNotify)ev_view_annotation_save,
2368                                            view);
2369                 }
2370         }
2371 }
2372
2373 static void
2374 hide_annotation_windows (EvView *view,
2375                          gint    page)
2376 {
2377         GList *annots, *l;
2378
2379         annots = ev_pixbuf_cache_get_annots_mapping (view->pixbuf_cache, page);
2380
2381         for (l = annots; l && l->data; l = g_list_next (l)) {
2382                 EvAnnotation *annot;
2383                 GtkWidget    *window;
2384
2385                 annot = ((EvMapping *)(l->data))->data;
2386
2387                 if (!EV_IS_ANNOTATION_MARKUP (annot))
2388                         continue;
2389
2390                 window = g_object_get_data (G_OBJECT (annot), "popup");
2391                 if (window)
2392                         gtk_widget_hide (window);
2393         }
2394 }
2395
2396 static EvAnnotation *
2397 ev_view_get_annotation_at_location (EvView  *view,
2398                                     gdouble  x,
2399                                     gdouble  y)
2400 {
2401         gint page = -1;
2402         gint x_new = 0, y_new = 0;
2403         GList *annotations_mapping;
2404
2405         if (!EV_IS_DOCUMENT_ANNOTATIONS (view->document))
2406                 return NULL;
2407
2408         if (!get_doc_point_from_location (view, x, y, &page, &x_new, &y_new))
2409                 return NULL;
2410
2411         annotations_mapping = ev_pixbuf_cache_get_annots_mapping (view->pixbuf_cache, page);
2412
2413         if (annotations_mapping)
2414                 return ev_mapping_list_get_data (annotations_mapping, x_new, y_new);
2415         else
2416                 return NULL;
2417 }
2418
2419 static void
2420 ev_view_handle_annotation (EvView       *view,
2421                            EvAnnotation *annot,
2422                            gdouble       x,
2423                            gdouble       y)
2424 {
2425         if (EV_IS_ANNOTATION_MARKUP (annot)) {
2426                 GtkWidget *window;
2427
2428                 window = g_object_get_data (G_OBJECT (annot), "popup");
2429                 if (window) {
2430                         EvViewWindowChild *child;
2431
2432                         child = ev_view_get_window_child (view, window);
2433                         if (!child->visible) {
2434                                 child->visible = TRUE;
2435                                 ev_view_window_child_move (view, child, child->x, child->y);
2436                                 gtk_widget_show (window);
2437                         }
2438                 }
2439         }
2440 }
2441
2442 /*** GtkWidget implementation ***/
2443
2444 static void
2445 ev_view_size_request_continuous_dual_page (EvView         *view,
2446                                            GtkRequisition *requisition)
2447 {
2448         int max_width;
2449         gint n_pages;
2450         GtkBorder border;
2451
2452         ev_page_cache_get_max_width (view->page_cache, view->rotation,
2453                                      view->scale, &max_width);
2454         compute_border (view, max_width, max_width, &border);
2455
2456         n_pages = ev_document_get_n_pages (view->document) + 1;
2457
2458         requisition->width = (max_width + border.left + border.right) * 2 + (view->spacing * 3);
2459         get_page_y_offset (view, n_pages, view->scale, &requisition->height);
2460
2461         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
2462                 requisition->width = 1;
2463         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
2464                 requisition->width = 1;
2465                 /* FIXME: This could actually be set on one page docs or docs
2466                  * with a strange aspect ratio. */
2467                 /* requisition->height = 1;*/
2468         }
2469 }
2470
2471 static void
2472 ev_view_size_request_continuous (EvView         *view,
2473                                  GtkRequisition *requisition)
2474 {
2475         int max_width;
2476         int n_pages;
2477         GtkBorder border;
2478
2479
2480         ev_page_cache_get_max_width (view->page_cache, view->rotation,
2481                                      view->scale, &max_width);
2482         n_pages = ev_document_get_n_pages (view->document);
2483         compute_border (view, max_width, max_width, &border);
2484
2485         requisition->width = max_width + (view->spacing * 2) + border.left + border.right;
2486         get_page_y_offset (view, n_pages, view->scale, &requisition->height);
2487
2488         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
2489                 requisition->width = 1;
2490         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
2491                 requisition->width = 1;
2492                 /* FIXME: This could actually be set on one page docs or docs
2493                  * with a strange aspect ratio. */
2494                 /* requisition->height = 1;*/
2495         }
2496 }
2497
2498 static void
2499 ev_view_size_request_dual_page (EvView         *view,
2500                                 GtkRequisition *requisition)
2501 {
2502         GtkBorder border;
2503         gint width, height;
2504
2505         /* Find the largest of the two. */
2506         ev_page_cache_get_size (view->page_cache,
2507                                 view->current_page,
2508                                 view->rotation,
2509                                 view->scale,
2510                                 &width, &height);
2511         if (view->current_page + 1 < ev_document_get_n_pages (view->document)) {
2512                 gint width_2, height_2;
2513                 ev_page_cache_get_size (view->page_cache,
2514                                         view->current_page + 1,
2515                                         view->rotation,
2516                                         view->scale,
2517                                         &width_2, &height_2);
2518                 if (width_2 > width) {
2519                         width = width_2;
2520                         height = height_2;
2521                 }
2522         }
2523         compute_border (view, width, height, &border);
2524
2525         requisition->width = ((width + border.left + border.right) * 2) +
2526                 (view->spacing * 3);
2527         requisition->height = (height + border.top + border.bottom) +
2528                 (view->spacing * 2);
2529
2530         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
2531                 requisition->width = 1;
2532         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
2533                 requisition->width = 1;
2534                 requisition->height = 1;
2535         }
2536 }
2537
2538 static void
2539 ev_view_size_request_single_page (EvView         *view,
2540                                   GtkRequisition *requisition)
2541 {
2542         GtkBorder border;
2543         gint width, height;
2544
2545         ev_page_cache_get_size (view->page_cache,
2546                                 view->current_page,
2547                                 view->rotation,
2548                                 view->scale,
2549                                 &width, &height);
2550         compute_border (view, width, height, &border);
2551
2552         requisition->width = width + border.left + border.right + (2 * view->spacing);
2553         requisition->height = height + border.top + border.bottom + (2 * view->spacing);
2554
2555         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
2556                 requisition->width = 1;
2557                 requisition->height = height + border.top + border.bottom + (2 * view->spacing);
2558         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
2559                 requisition->width = 1;
2560                 requisition->height = 1;
2561         }
2562 }
2563
2564 static void
2565 ev_view_size_request (GtkWidget      *widget,
2566                       GtkRequisition *requisition)
2567 {
2568         EvView *view = EV_VIEW (widget);
2569
2570         if (view->document == NULL) {
2571                 requisition->width = 1;
2572                 requisition->height = 1;
2573                 return;
2574         }
2575
2576         if (view->presentation) {
2577                 requisition->width = 1;
2578                 requisition->height = 1;
2579                 return;
2580         }
2581
2582         if (view->continuous && view->dual_page)
2583                 ev_view_size_request_continuous_dual_page (view, requisition);
2584         else if (view->continuous)
2585                 ev_view_size_request_continuous (view, requisition);
2586         else if (view->dual_page)
2587                 ev_view_size_request_dual_page (view, requisition);
2588         else
2589                 ev_view_size_request_single_page (view, requisition);
2590 }
2591
2592 static void
2593 ev_view_size_allocate (GtkWidget      *widget,
2594                        GtkAllocation  *allocation)
2595 {
2596         EvView *view = EV_VIEW (widget);
2597         GList  *children, *l;
2598         gint    root_x, root_y;
2599
2600         GTK_WIDGET_CLASS (ev_view_parent_class)->size_allocate (widget, allocation);
2601
2602         if (view->sizing_mode == EV_SIZING_FIT_WIDTH ||
2603             view->sizing_mode == EV_SIZING_BEST_FIT) {
2604                 g_signal_emit (view, signals[SIGNAL_ZOOM_INVALID], 0);
2605                 ev_view_size_request (widget, &widget->requisition);
2606         }
2607
2608         view_set_adjustment_values (view, GTK_ORIENTATION_HORIZONTAL);
2609         view_set_adjustment_values (view, GTK_ORIENTATION_VERTICAL);
2610
2611         if (view->document)
2612                 view_update_range_and_current_page (view);
2613
2614         view->pending_scroll = SCROLL_TO_KEEP_POSITION;
2615         view->pending_resize = FALSE;
2616
2617         children = gtk_container_get_children (GTK_CONTAINER (widget));
2618         for (l = children; l && l->data; l = g_list_next (l)) {
2619                 EvFormField   *field;
2620                 GdkRectangle   view_area;
2621                 GList         *form_field_mapping;
2622                 GtkAllocation  child_allocation;
2623                 GtkRequisition child_requisition;
2624                 GtkWidget     *child = (GtkWidget *)l->data;
2625
2626                 field = g_object_get_data (G_OBJECT (child), "form-field");
2627                 if (!field)
2628                         continue;
2629
2630                 form_field_mapping = ev_pixbuf_cache_get_form_field_mapping (view->pixbuf_cache,
2631                                                                              field->page->index);
2632                 ev_view_get_area_from_mapping (view, field->page->index,
2633                                                form_field_mapping,
2634                                                field, &view_area);
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 &&
2750             (view->presentation ||
2751              (view->sizing_mode == EV_SIZING_BEST_FIT && !view->continuous))) {
2752                 switch (event->direction) {
2753                         case GDK_SCROLL_DOWN:
2754                         case GDK_SCROLL_RIGHT:
2755                                 ev_view_next_page (view);
2756                                 break;
2757                         case GDK_SCROLL_UP:
2758                         case GDK_SCROLL_LEFT:
2759                                 ev_view_previous_page (view);
2760                                 break;
2761                 }
2762
2763                 return TRUE;
2764         }
2765
2766         return FALSE;
2767 }
2768
2769 static EvViewSelection *
2770 find_selection_for_page (EvView *view,
2771                          gint    page)
2772 {
2773         GList *list;
2774
2775         for (list = view->selection_info.selections; list != NULL; list = list->next) {
2776                 EvViewSelection *selection;
2777
2778                 selection = (EvViewSelection *) list->data;
2779
2780                 if (selection->page == page)
2781                         return selection;
2782         }
2783
2784         return NULL;
2785 }
2786
2787 static void
2788 draw_end_presentation_page (EvView       *view,
2789                             GdkRectangle *page_area)
2790 {
2791         PangoLayout *layout;
2792         PangoFontDescription *font_desc;
2793         gchar *markup;
2794         const gchar *text = _("End of presentation. Press Escape to exit.");
2795
2796         if (view->presentation_state != EV_PRESENTATION_END)
2797                 return;
2798
2799         layout = gtk_widget_create_pango_layout (GTK_WIDGET (view), NULL);
2800         markup = g_strdup_printf ("<span foreground=\"white\">%s</span>", text);
2801         pango_layout_set_markup (layout, markup, -1);
2802         g_free (markup);
2803
2804         font_desc = pango_font_description_new ();
2805         pango_font_description_set_size (font_desc, 16 * PANGO_SCALE);
2806         pango_layout_set_font_description (layout, font_desc);
2807
2808         gtk_paint_layout (GTK_WIDGET (view)->style,
2809                           view->layout.bin_window,
2810                           GTK_WIDGET_STATE (view),
2811                           FALSE,
2812                           page_area,
2813                           GTK_WIDGET (view),
2814                           NULL,
2815                           page_area->x + 15,
2816                           page_area->y + 15,
2817                           layout);
2818
2819         pango_font_description_free (font_desc);
2820         g_object_unref (layout);
2821 }
2822
2823 static gboolean
2824 ev_view_expose_event (GtkWidget      *widget,
2825                       GdkEventExpose *event)
2826 {
2827         EvView  *view = EV_VIEW (widget);
2828         cairo_t *cr;
2829         gint     i;
2830
2831         if (view->animation) {
2832                 if (ev_transition_animation_ready (view->animation)) {
2833                         GdkRectangle page_area;
2834                         GtkBorder    border;
2835
2836                         if (get_page_extents (view, view->current_page, &page_area, &border)) {
2837                                 cr = gdk_cairo_create (view->layout.bin_window);
2838
2839                                 /* normalize to x=0, y=0 */
2840                                 cairo_translate (cr, page_area.x, page_area.y);
2841                                 page_area.x = page_area.y = 0;
2842
2843                                 ev_transition_animation_paint (view->animation, cr, page_area);
2844                                 cairo_destroy (cr);
2845                         }
2846                 }
2847
2848                 return TRUE;
2849         }
2850
2851         if (view->presentation) {
2852                 switch (view->presentation_state) {
2853                         case EV_PRESENTATION_END: {
2854                                 GdkRectangle area = {0};
2855
2856                                 area.width = widget->allocation.width;
2857                                 area.height = widget->allocation.height;
2858
2859                                 draw_end_presentation_page (view, &area);
2860                         }
2861                                 return FALSE;
2862                         case EV_PRESENTATION_BLACK:
2863                         case EV_PRESENTATION_WHITE:
2864                                 return FALSE;
2865                         case EV_PRESENTATION_NORMAL:
2866                         default:
2867                                 break;
2868                 }
2869         } else if (view->loading) {
2870                 GdkRectangle area = {0};
2871
2872                 area.width = widget->allocation.width;
2873                 area.height = widget->allocation.height;
2874
2875                 draw_loading_text (view,
2876                                    &area,
2877                                    &(event->area));
2878         }
2879
2880         if (view->document == NULL)
2881                 return FALSE;
2882
2883         cr = gdk_cairo_create (view->layout.bin_window);
2884
2885         for (i = view->start_page; i <= view->end_page; i++) {
2886                 GdkRectangle page_area;
2887                 GtkBorder border;
2888                 gboolean page_ready = TRUE;
2889
2890                 if (!get_page_extents (view, i, &page_area, &border))
2891                         continue;
2892
2893                 page_area.x -= view->scroll_x;
2894                 page_area.y -= view->scroll_y;
2895
2896                 draw_one_page (view, i, cr, &page_area, &border, &(event->area), &page_ready);
2897
2898                 if (page_ready && view->find_pages && view->highlight_find_results)
2899                         highlight_find_results (view, i);
2900                 if (page_ready && EV_IS_DOCUMENT_ANNOTATIONS (view->document))
2901                         show_annotation_windows (view, i);
2902         }
2903
2904         cairo_destroy (cr);
2905
2906         if (GTK_WIDGET_CLASS (ev_view_parent_class)->expose_event)
2907                 (* GTK_WIDGET_CLASS (ev_view_parent_class)->expose_event) (widget, event);
2908
2909         return FALSE;
2910 }
2911
2912 static gboolean
2913 ev_view_do_popup_menu (EvView *view,
2914                        gdouble x,
2915                        gdouble y)
2916 {
2917         EvLink  *link;
2918         EvImage *image;
2919
2920         image = ev_view_get_image_at_location (view, x, y);
2921         if (image) {
2922                 g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, image);
2923                 return TRUE;
2924         }
2925
2926         link = ev_view_get_link_at_location (view, x, y);
2927         if (link) {
2928                 g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, link);
2929                 return TRUE;
2930         }
2931
2932         g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, NULL);
2933
2934         return TRUE;
2935 }
2936
2937 static gboolean
2938 ev_view_popup_menu (GtkWidget *widget)
2939 {
2940         gint x, y;
2941
2942         gtk_widget_get_pointer (widget, &x, &y);
2943         return ev_view_do_popup_menu (EV_VIEW (widget), x, y);
2944 }
2945
2946 static void
2947 get_link_area (EvView       *view,
2948                gint          x,
2949                gint          y,
2950                EvLink       *link,
2951                GdkRectangle *area)
2952 {
2953         GList *link_mapping;
2954         gint   page;
2955         gint   x_offset = 0, y_offset = 0;
2956
2957         x += view->scroll_x;
2958         y += view->scroll_y;
2959
2960         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
2961
2962         link_mapping = ev_pixbuf_cache_get_link_mapping (view->pixbuf_cache, page);
2963         ev_view_get_area_from_mapping (view, page,
2964                                        link_mapping,
2965                                        link, area);
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         gint   page;
2977         gint   x_offset = 0, y_offset = 0;
2978
2979         x += view->scroll_x;
2980         y += view->scroll_y;
2981
2982         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
2983
2984         annots_mapping = ev_pixbuf_cache_get_annots_mapping (view->pixbuf_cache, page);
2985         ev_view_get_area_from_mapping (view, page,
2986                                        annots_mapping,
2987                                        annot, area);
2988 }
2989
2990 static gboolean
2991 ev_view_query_tooltip (GtkWidget  *widget,
2992                        gint        x,
2993                        gint        y,
2994                        gboolean    keyboard_tip,
2995                        GtkTooltip *tooltip)
2996 {
2997         EvView       *view = EV_VIEW (widget);
2998         EvLink       *link;
2999         EvAnnotation *annot;
3000         gchar        *text;
3001
3002         annot = ev_view_get_annotation_at_location (view, x, y);
3003         if (annot && annot->contents) {
3004                 GdkRectangle annot_area;
3005
3006                 get_annot_area (view, x, y, annot, &annot_area);
3007                 gtk_tooltip_set_text (tooltip, annot->contents);
3008                 gtk_tooltip_set_tip_area (tooltip, &annot_area);
3009
3010                 return TRUE;
3011         }
3012
3013         link = ev_view_get_link_at_location (view, x, y);
3014         if (!link)
3015                 return FALSE;
3016
3017         text = tip_from_link (view, link);
3018         if (text && g_utf8_validate (text, -1, NULL)) {
3019                 GdkRectangle link_area;
3020
3021                 get_link_area (view, x, y, link, &link_area);
3022                 gtk_tooltip_set_text (tooltip, text);
3023                 gtk_tooltip_set_tip_area (tooltip, &link_area);
3024         }
3025         g_free (text);
3026
3027         return TRUE;
3028 }
3029
3030 static void
3031 start_selection_for_event (EvView         *view,
3032                            GdkEventButton *event)
3033 {
3034         clear_selection (view);
3035
3036         view->selection_info.start.x = event->x + view->scroll_x;
3037         view->selection_info.start.y = event->y + view->scroll_y;
3038
3039         switch (event->type) {
3040                 case GDK_2BUTTON_PRESS:
3041                         view->selection_info.style = EV_SELECTION_STYLE_WORD;
3042                         break;
3043                 case GDK_3BUTTON_PRESS:
3044                         view->selection_info.style = EV_SELECTION_STYLE_LINE;
3045                         break;
3046                 default:
3047                         view->selection_info.style = EV_SELECTION_STYLE_GLYPH;
3048                         return;
3049         }
3050
3051         /* In case of WORD or LINE, compute selections now */
3052         compute_selections (view,
3053                             view->selection_info.style,
3054                             &(view->selection_info.start),
3055                             &(view->selection_info.start));
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.selections) {
3539                 clear_link_selected (view);
3540                 ev_view_update_primary_selection (view);
3541
3542                 if (view->selection_info.in_drag) {
3543                         clear_selection (view);
3544                         gtk_widget_queue_draw (widget);
3545                 }
3546
3547                 view->selection_info.in_drag = FALSE;
3548         } else if (link) {
3549                 if (event->button == 2) {
3550                         EvLinkAction    *action;
3551                         EvLinkActionType type;
3552
3553                         action = ev_link_get_action (link);
3554                         if (!action)
3555                                 return FALSE;
3556
3557                         type = ev_link_action_get_action_type (action);
3558                         if (type == EV_LINK_ACTION_TYPE_GOTO_DEST) {
3559                                 g_signal_emit (view,
3560                                                signals[SIGNAL_EXTERNAL_LINK],
3561                                                0, action);
3562                         }
3563                 } else {
3564                         ev_view_handle_link (view, link);
3565                 }
3566         } else if (view->presentation) {
3567                 switch (event->button) {
3568                         case 1:
3569                                 ev_view_next_page (view);
3570                                 return TRUE;
3571                         case 3:
3572                                 ev_view_previous_page (view);
3573                                 return TRUE;
3574                 }
3575         }
3576
3577         return FALSE;
3578 }
3579
3580 /* Goto Window */
3581 /* Cut and paste from gtkwindow.c */
3582 static void
3583 send_focus_change (GtkWidget *widget,
3584                    gboolean   in)
3585 {
3586         GdkEvent *fevent = gdk_event_new (GDK_FOCUS_CHANGE);
3587
3588         g_object_ref (widget);
3589
3590         if (in)
3591                 GTK_WIDGET_SET_FLAGS (widget, GTK_HAS_FOCUS);
3592         else
3593                 GTK_WIDGET_UNSET_FLAGS (widget, GTK_HAS_FOCUS);
3594
3595         fevent->focus_change.type = GDK_FOCUS_CHANGE;
3596         fevent->focus_change.window = g_object_ref (widget->window);
3597         fevent->focus_change.in = in;
3598
3599         gtk_widget_event (widget, fevent);
3600
3601         g_object_notify (G_OBJECT (widget), "has-focus");
3602
3603         g_object_unref (widget);
3604         gdk_event_free (fevent);
3605 }
3606
3607 static void
3608 ev_view_goto_window_hide (EvView *view)
3609 {
3610         /* send focus-in event */
3611         send_focus_change (view->goto_entry, FALSE);
3612         gtk_widget_hide (view->goto_window);
3613         gtk_entry_set_text (GTK_ENTRY (view->goto_entry), "");
3614 }
3615
3616 static gboolean
3617 ev_view_goto_window_delete_event (GtkWidget   *widget,
3618                                   GdkEventAny *event,
3619                                   EvView      *view)
3620 {
3621         ev_view_goto_window_hide (view);
3622
3623         return TRUE;
3624 }
3625
3626 static gboolean
3627 key_is_numeric (guint keyval)
3628 {
3629         return ((keyval >= GDK_0 && keyval <= GDK_9) ||
3630                 (keyval >= GDK_KP_0 && keyval <= GDK_KP_9));
3631 }
3632
3633 static gboolean
3634 ev_view_goto_window_key_press_event (GtkWidget   *widget,
3635                                      GdkEventKey *event,
3636                                      EvView      *view)
3637 {
3638         switch (event->keyval) {
3639                 case GDK_Escape:
3640                 case GDK_Tab:
3641                 case GDK_KP_Tab:
3642                 case GDK_ISO_Left_Tab:
3643                         ev_view_goto_window_hide (view);
3644                         return TRUE;
3645                 case GDK_Return:
3646                 case GDK_KP_Enter:
3647                 case GDK_ISO_Enter:
3648                 case GDK_BackSpace:
3649                 case GDK_Delete:
3650                         return FALSE;
3651                 default:
3652                         if (!key_is_numeric (event->keyval))
3653                                 return TRUE;
3654         }
3655
3656         return FALSE;
3657 }
3658
3659 static gboolean
3660 ev_view_goto_window_button_press_event (GtkWidget      *widget,
3661                                         GdkEventButton *event,
3662                                         EvView         *view)
3663 {
3664         ev_view_goto_window_hide (view);
3665
3666         return TRUE;
3667 }
3668
3669 static void
3670 ev_view_goto_entry_activate (GtkEntry *entry,
3671                              EvView   *view)
3672 {
3673         const gchar *text;
3674         gint         page;
3675
3676         text = gtk_entry_get_text (entry);
3677         page = atoi (text) - 1;
3678
3679         ev_view_goto_window_hide (view);
3680
3681         if (page >= 0 && page < ev_document_get_n_pages (view->document))
3682                 ev_page_cache_set_current_page (view->page_cache, page);
3683 }
3684
3685 static void
3686 ev_view_goto_window_create (EvView *view)
3687 {
3688         GtkWidget *frame, *hbox, *toplevel, *label;
3689
3690         toplevel = gtk_widget_get_toplevel (GTK_WIDGET (view));
3691
3692         if (view->goto_window) {
3693                 if (GTK_WINDOW (toplevel)->group)
3694                         gtk_window_group_add_window (GTK_WINDOW (toplevel)->group,
3695                                                      GTK_WINDOW (view->goto_window));
3696                 else if (GTK_WINDOW (view->goto_window)->group)
3697                         gtk_window_group_remove_window (GTK_WINDOW (view->goto_window)->group,
3698                                                         GTK_WINDOW (view->goto_window));
3699                 return;
3700         }
3701
3702         view->goto_window = gtk_window_new (GTK_WINDOW_POPUP);
3703         gtk_window_set_screen (GTK_WINDOW (view->goto_window),
3704                                gtk_widget_get_screen (GTK_WIDGET (view)));
3705
3706         if (GTK_WINDOW (toplevel)->group)
3707                 gtk_window_group_add_window (GTK_WINDOW (toplevel)->group,
3708                                              GTK_WINDOW (view->goto_window));
3709
3710         gtk_window_set_modal (GTK_WINDOW (view->goto_window), TRUE);
3711
3712         g_signal_connect (view->goto_window, "delete_event",
3713                           G_CALLBACK (ev_view_goto_window_delete_event),
3714                           view);
3715         g_signal_connect (view->goto_window, "key_press_event",
3716                           G_CALLBACK (ev_view_goto_window_key_press_event),
3717                           view);
3718         g_signal_connect (view->goto_window, "button_press_event",
3719                           G_CALLBACK (ev_view_goto_window_button_press_event),
3720                           view);
3721
3722         frame = gtk_frame_new (NULL);
3723         gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_ETCHED_IN);
3724         gtk_container_add (GTK_CONTAINER (view->goto_window), frame);
3725         gtk_widget_show (frame);
3726
3727         hbox = gtk_hbox_new (FALSE, 0);
3728         gtk_container_set_border_width (GTK_CONTAINER (hbox), 3);
3729         gtk_container_add (GTK_CONTAINER (frame), hbox);
3730         gtk_widget_show (hbox);
3731
3732         label = gtk_label_new(_("Jump to page:"));
3733         gtk_box_pack_start (GTK_BOX (hbox), label, TRUE, TRUE, 3);
3734         gtk_widget_show (label);
3735         gtk_widget_realize (label);
3736
3737         view->goto_entry = gtk_entry_new ();
3738         g_signal_connect (view->goto_entry, "activate",
3739                           G_CALLBACK (ev_view_goto_entry_activate),
3740                           view);
3741         gtk_box_pack_start (GTK_BOX (hbox), view->goto_entry, TRUE, TRUE, 0);
3742         gtk_widget_show (view->goto_entry);
3743         gtk_widget_realize (view->goto_entry);
3744 }
3745
3746 static void
3747 ev_view_goto_entry_grab_focus (EvView *view)
3748 {
3749         GtkWidgetClass *entry_parent_class;
3750
3751         entry_parent_class = g_type_class_peek_parent (GTK_ENTRY_GET_CLASS (view->goto_entry));
3752         (entry_parent_class->grab_focus) (view->goto_entry);
3753
3754         send_focus_change (view->goto_entry, TRUE);
3755 }
3756
3757 static void
3758 ev_view_goto_window_send_key_event (EvView   *view,
3759                                     GdkEvent *event)
3760 {
3761         GdkEventKey *new_event;
3762         GdkScreen   *screen;
3763
3764         /* Move goto window off screen */
3765         screen = gtk_widget_get_screen (GTK_WIDGET (view));
3766         gtk_window_move (GTK_WINDOW (view->goto_window),
3767                          gdk_screen_get_width (screen) + 1,
3768                          gdk_screen_get_height (screen) + 1);
3769         gtk_widget_show (view->goto_window);
3770
3771         new_event = (GdkEventKey *) gdk_event_copy (event);
3772         g_object_unref (new_event->window);
3773         new_event->window = g_object_ref (view->goto_window->window);
3774         gtk_widget_realize (view->goto_window);
3775
3776         gtk_widget_event (view->goto_window, (GdkEvent *)new_event);
3777         gdk_event_free ((GdkEvent *)new_event);
3778         gtk_widget_hide (view->goto_window);
3779 }
3780
3781 static gboolean
3782 ev_view_key_press_event (GtkWidget   *widget,
3783                          GdkEventKey *event)
3784 {
3785         EvView *view = EV_VIEW (widget);
3786         EvPresentationState current;
3787
3788         if (!view->document)
3789                 return FALSE;
3790
3791         if (!GTK_WIDGET_HAS_FOCUS (widget)) {
3792                 /* Forward key events to current focused window child */
3793                 if (view->window_child_focus) {
3794                         GdkEventKey *new_event;
3795                         gboolean     handled;
3796
3797                         new_event = (GdkEventKey *) gdk_event_copy ((GdkEvent *)event);
3798                         g_object_unref (new_event->window);
3799                         new_event->window = g_object_ref (view->window_child_focus->window->window);
3800                         gtk_widget_realize (view->window_child_focus->window);
3801                         handled = gtk_widget_event (view->window_child_focus->window, (GdkEvent *)new_event);
3802                         gdk_event_free ((GdkEvent *)new_event);
3803
3804                         return handled;
3805                 }
3806
3807                 return FALSE;
3808         }
3809
3810         if (!view->presentation ||
3811             view->presentation_state == EV_PRESENTATION_END)
3812                 return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
3813
3814
3815         current = view->presentation_state;
3816
3817         switch (event->keyval) {
3818                 case GDK_b:
3819                 case GDK_B:
3820                 case GDK_period:
3821                 case GDK_KP_Decimal:
3822                         view->presentation_state =
3823                                 (view->presentation_state == EV_PRESENTATION_BLACK) ?
3824                                 EV_PRESENTATION_NORMAL : EV_PRESENTATION_BLACK;
3825                         break;
3826                 case GDK_w:
3827                 case GDK_W:
3828                         view->presentation_state =
3829                                 (view->presentation_state == EV_PRESENTATION_WHITE) ?
3830                                 EV_PRESENTATION_NORMAL : EV_PRESENTATION_WHITE;
3831                         break;
3832                 default:
3833                         if (view->presentation_state == EV_PRESENTATION_BLACK ||
3834                             view->presentation_state == EV_PRESENTATION_WHITE) {
3835                                 view->presentation_state = EV_PRESENTATION_NORMAL;
3836                         }
3837         }
3838
3839         if (current == view->presentation_state) {
3840                 if (ev_document_get_n_pages (view->document) > 1 &&
3841                     key_is_numeric (event->keyval)) {
3842                         gint x, y;
3843
3844                         ev_view_goto_window_create (view);
3845                         ev_view_goto_window_send_key_event (view, (GdkEvent *)event);
3846                         gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
3847                         gtk_window_move (GTK_WINDOW (view->goto_window), x, y);
3848                         gtk_widget_show (view->goto_window);
3849                         ev_view_goto_entry_grab_focus (view);
3850
3851                         return TRUE;
3852                 }
3853
3854                 return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
3855         }
3856
3857         switch (view->presentation_state) {
3858                 case EV_PRESENTATION_NORMAL:
3859                 case EV_PRESENTATION_BLACK:
3860                         gdk_window_set_background (view->layout.bin_window,
3861                                                    &widget->style->black);
3862                         break;
3863                 case EV_PRESENTATION_WHITE:
3864                         gdk_window_set_background (view->layout.bin_window,
3865                                                    &widget->style->white);
3866                         break;
3867                 default:
3868                         return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
3869         }
3870
3871         gtk_widget_queue_draw (widget);
3872         return TRUE;
3873 }
3874
3875 static gint
3876 ev_view_focus_in (GtkWidget     *widget,
3877                   GdkEventFocus *event)
3878 {
3879         if (EV_VIEW (widget)->pixbuf_cache)
3880                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
3881         gtk_widget_queue_draw (widget);
3882
3883         return FALSE;
3884 }
3885
3886 static gint
3887 ev_view_focus_out (GtkWidget     *widget,
3888                      GdkEventFocus *event)
3889 {
3890         if (EV_VIEW (widget)->goto_window)
3891                 ev_view_goto_window_hide (EV_VIEW (widget));
3892
3893         if (EV_VIEW (widget)->pixbuf_cache)
3894                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
3895         gtk_widget_queue_draw (widget);
3896
3897         return FALSE;
3898 }
3899
3900 static gboolean
3901 ev_view_leave_notify_event (GtkWidget *widget, GdkEventCrossing   *event)
3902 {
3903         EvView *view = EV_VIEW (widget);
3904
3905         if (view->cursor != EV_VIEW_CURSOR_NORMAL)
3906                 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
3907
3908         return FALSE;
3909 }
3910
3911 static gboolean
3912 ev_view_enter_notify_event (GtkWidget *widget, GdkEventCrossing   *event)
3913 {
3914         EvView *view = EV_VIEW (widget);
3915
3916         ev_view_handle_cursor_over_xy (view, event->x, event->y);
3917
3918         return FALSE;
3919 }
3920
3921 static void
3922 ev_view_style_set (GtkWidget *widget,
3923                    GtkStyle  *old_style)
3924 {
3925         if (EV_VIEW (widget)->pixbuf_cache)
3926                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
3927
3928         GTK_WIDGET_CLASS (ev_view_parent_class)->style_set (widget, old_style);
3929 }
3930
3931 /*** Drawing ***/
3932
3933 static guint32
3934 ev_gdk_color_to_rgb (const GdkColor *color)
3935 {
3936   guint32 result;
3937   result = (0xff0000 | (color->red & 0xff00));
3938   result <<= 8;
3939   result |= ((color->green & 0xff00) | (color->blue >> 8));
3940   return result;
3941 }
3942
3943 static void
3944 draw_rubberband (GtkWidget *widget, GdkWindow *window,
3945                  const GdkRectangle *rect, guchar alpha)
3946 {
3947         GdkGC *gc;
3948         GdkPixbuf *pixbuf;
3949         GdkColor *fill_color_gdk;
3950         guint fill_color;
3951
3952         fill_color_gdk = gdk_color_copy (&GTK_WIDGET (widget)->style->base[GTK_STATE_SELECTED]);
3953         fill_color = ev_gdk_color_to_rgb (fill_color_gdk) << 8 | alpha;
3954
3955         pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE, 8,
3956                                  rect->width, rect->height);
3957         gdk_pixbuf_fill (pixbuf, fill_color);
3958
3959         gdk_draw_pixbuf (window, NULL, pixbuf,
3960                          0, 0,
3961                          rect->x - EV_VIEW (widget)->scroll_x, rect->y - EV_VIEW (widget)->scroll_y,
3962                          rect->width, rect->height,
3963                          GDK_RGB_DITHER_NONE,
3964                          0, 0);
3965
3966         g_object_unref (pixbuf);
3967
3968         gc = gdk_gc_new (window);
3969         gdk_gc_set_rgb_fg_color (gc, fill_color_gdk);
3970         gdk_draw_rectangle (window, gc, FALSE,
3971                             rect->x - EV_VIEW (widget)->scroll_x, rect->y - EV_VIEW (widget)->scroll_y,
3972                             rect->width - 1,
3973                             rect->height - 1);
3974         g_object_unref (gc);
3975
3976         gdk_color_free (fill_color_gdk);
3977 }
3978
3979
3980 static void
3981 highlight_find_results (EvView *view, int page)
3982 {
3983         gint i, n_results = 0;
3984
3985         n_results = ev_view_find_get_n_results (view, page);
3986
3987         for (i = 0; i < n_results; i++) {
3988                 EvRectangle *rectangle;
3989                 GdkRectangle view_rectangle;
3990                 guchar alpha;
3991
3992                 if (i == view->find_result && page == view->current_page) {
3993                         alpha = 0x90;
3994                 } else {
3995                         alpha = 0x20;
3996                 }
3997
3998                 rectangle = ev_view_find_get_result (view, page, i);
3999                 doc_rect_to_view_rect (view, page, rectangle, &view_rectangle);
4000                 draw_rubberband (GTK_WIDGET (view), view->layout.bin_window,
4001                                  &view_rectangle, alpha);
4002         }
4003 }
4004
4005 static void
4006 draw_loading_text (EvView       *view,
4007                    GdkRectangle *page_area,
4008                    GdkRectangle *expose_area)
4009 {
4010         cairo_t *cr;
4011         gint     width, height;
4012
4013         if (!view->loading_text) {
4014                 const gchar *loading_text = _("Loading...");
4015                 PangoLayout *layout;
4016                 PangoFontDescription *font_desc;
4017                 PangoRectangle logical_rect;
4018                 gint target_width;
4019                 gdouble real_scale;
4020
4021                 ev_document_fc_mutex_lock ();
4022
4023                 layout = gtk_widget_create_pango_layout (GTK_WIDGET (view), loading_text);
4024
4025                 font_desc = pango_font_description_new ();
4026
4027                 /* We set the font to be 10 points, get the size, and scale appropriately */
4028                 pango_font_description_set_size (font_desc, 10 * PANGO_SCALE);
4029                 pango_layout_set_font_description (layout, font_desc);
4030                 pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
4031
4032                 target_width = MAX (page_area->width / 2, 1);
4033                 real_scale = ((double)target_width / (double) logical_rect.width) * (PANGO_SCALE * 10);
4034                 pango_font_description_set_size (font_desc, (int)real_scale);
4035                 pango_layout_set_font_description (layout, font_desc);
4036                 pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
4037
4038                 view->loading_text = cairo_image_surface_create (CAIRO_FORMAT_ARGB32,
4039                                                                  logical_rect.width,
4040                                                                  logical_rect.height);
4041                 cr = cairo_create (view->loading_text);
4042                 cairo_set_source_rgb (cr,
4043                                       155 / (double)255,
4044                                       155 / (double)255,
4045                                       155 / (double)255);
4046                 pango_cairo_show_layout (cr, layout);
4047                 cairo_destroy (cr);
4048
4049                 pango_font_description_free (font_desc);
4050                 g_object_unref (layout);
4051
4052                 ev_document_fc_mutex_unlock ();
4053         }
4054
4055         width = (page_area->width - cairo_image_surface_get_width (view->loading_text)) / 2;
4056         height = (page_area->height - cairo_image_surface_get_height (view->loading_text)) / 2;
4057
4058         cr = gdk_cairo_create (view->layout.bin_window);
4059         cairo_translate (cr,
4060                          page_area->x + width,
4061                          page_area->y + height);
4062         cairo_set_source_surface (cr, view->loading_text, 0, 0);
4063         cairo_paint (cr);
4064         cairo_destroy (cr);
4065 }
4066
4067 static void
4068 draw_one_page (EvView       *view,
4069                gint          page,
4070                cairo_t      *cr,
4071                GdkRectangle *page_area,
4072                GtkBorder    *border,
4073                GdkRectangle *expose_area,
4074                gboolean     *page_ready)
4075 {
4076         GdkRectangle overlap;
4077         GdkRectangle real_page_area;
4078
4079         g_assert (view->document);
4080
4081         if (! gdk_rectangle_intersect (page_area, expose_area, &overlap))
4082                 return;
4083
4084         /* Render the document itself */
4085         real_page_area = *page_area;
4086
4087         real_page_area.x += border->left;
4088         real_page_area.y += border->top;
4089         real_page_area.width -= (border->left + border->right);
4090         real_page_area.height -= (border->top + border->bottom);
4091         *page_ready = TRUE;
4092
4093         if (!view->presentation) {
4094                 gint current_page;
4095
4096                 current_page = ev_page_cache_get_current_page (view->page_cache);
4097                 ev_document_misc_paint_one_page (view->layout.bin_window,
4098                                                  GTK_WIDGET (view),
4099                                                  page_area, border,
4100                                                  page == current_page);
4101         }
4102
4103         if (gdk_rectangle_intersect (&real_page_area, expose_area, &overlap)) {
4104                 gint             width, height;
4105                 gint             page_width, page_height;
4106                 cairo_surface_t *page_surface = NULL;
4107                 gint             selection_width, selection_height;
4108                 cairo_surface_t *selection_surface = NULL;
4109
4110                 page_surface = ev_pixbuf_cache_get_surface (view->pixbuf_cache, page);
4111
4112                 if (!page_surface) {
4113                         if (!view->presentation) {
4114                                 draw_loading_text (view,
4115                                                    &real_page_area,
4116                                                    expose_area);
4117                         }
4118
4119                         *page_ready = FALSE;
4120
4121                         return;
4122                 }
4123
4124                 ev_page_cache_get_size (view->page_cache,
4125                                         page, view->rotation,
4126                                         view->scale,
4127                                         &width, &height);
4128
4129                 page_width = cairo_image_surface_get_width (page_surface);
4130                 page_height = cairo_image_surface_get_height (page_surface);
4131
4132                 cairo_save (cr);
4133                 cairo_translate (cr, overlap.x, overlap.y);
4134
4135                 if (width != page_width || height != page_height) {
4136                         cairo_pattern_set_filter (cairo_get_source (cr),
4137                                                   CAIRO_FILTER_FAST);
4138                         cairo_scale (cr,
4139                                      (gdouble)width / page_width,
4140                                      (gdouble)height / page_height);
4141                 }
4142
4143                 cairo_surface_set_device_offset (page_surface,
4144                                                  overlap.x - real_page_area.x,
4145                                                  overlap.y - real_page_area.y);
4146                 cairo_set_source_surface (cr, page_surface, 0, 0);
4147                 cairo_paint (cr);
4148                 cairo_restore (cr);
4149
4150                 /* Get the selection pixbuf iff we have something to draw */
4151                 if (find_selection_for_page (view, page) &&
4152                     view->selection_mode == EV_VIEW_SELECTION_TEXT) {
4153                         selection_surface =
4154                                 ev_pixbuf_cache_get_selection_surface (view->pixbuf_cache,
4155                                                                        page,
4156                                                                        view->scale,
4157                                                                        NULL);
4158                 }
4159
4160                 if (!selection_surface) {
4161                         return;
4162                 }
4163
4164                 selection_width = cairo_image_surface_get_width (selection_surface);
4165                 selection_height = cairo_image_surface_get_height (selection_surface);
4166
4167                 cairo_save (cr);
4168                 cairo_translate (cr, overlap.x, overlap.y);
4169
4170                 if (width != selection_width || height != selection_height) {
4171                         cairo_pattern_set_filter (cairo_get_source (cr),
4172                                                   CAIRO_FILTER_FAST);
4173                         cairo_scale (cr,
4174                                      (gdouble)width / selection_width,
4175                                      (gdouble)height / selection_height);
4176                 }
4177
4178                 cairo_surface_set_device_offset (selection_surface,
4179                                                  overlap.x - real_page_area.x,
4180                                                  overlap.y - real_page_area.y);
4181                 cairo_set_source_surface (cr, selection_surface, 0, 0);
4182                 cairo_paint (cr);
4183                 cairo_restore (cr);
4184         }
4185 }
4186
4187 /*** GObject functions ***/
4188
4189 static void
4190 ev_view_finalize (GObject *object)
4191 {
4192         EvView *view = EV_VIEW (object);
4193
4194         clear_selection (view);
4195         clear_link_selected (view);
4196
4197         if (view->image_dnd_info.image)
4198                 g_object_unref (view->image_dnd_info.image);
4199         view->image_dnd_info.image = NULL;
4200
4201         G_OBJECT_CLASS (ev_view_parent_class)->finalize (object);
4202 }
4203
4204 static void
4205 ev_view_destroy (GtkObject *object)
4206 {
4207         EvView *view = EV_VIEW (object);
4208
4209         if (view->document) {
4210                 g_object_unref (view->document);
4211                 view->document = NULL;
4212         }
4213
4214         if (view->pixbuf_cache) {
4215                 g_object_unref (view->pixbuf_cache);
4216                 view->pixbuf_cache = NULL;
4217         }
4218
4219         if (view->goto_window) {
4220                 gtk_widget_destroy (view->goto_window);
4221                 view->goto_window = NULL;
4222                 view->goto_entry = NULL;
4223         }
4224
4225         ev_view_window_children_free (view);
4226
4227         if (view->selection_scroll_id) {
4228             g_source_remove (view->selection_scroll_id);
4229             view->selection_scroll_id = 0;
4230         }
4231
4232         if (view->selection_update_id) {
4233             g_source_remove (view->selection_update_id);
4234             view->selection_update_id = 0;
4235         }
4236
4237         if (view->loading_text) {
4238                 cairo_surface_destroy (view->loading_text);
4239                 view->loading_text = NULL;
4240         }
4241
4242         if (view->scroll_info.timeout_id) {
4243             g_source_remove (view->scroll_info.timeout_id);
4244             view->scroll_info.timeout_id = 0;
4245         }
4246
4247         if (view->drag_info.drag_timeout_id) {
4248                 g_source_remove (view->drag_info.drag_timeout_id);
4249                 view->drag_info.drag_timeout_id = 0;
4250         }
4251
4252         if (view->drag_info.release_timeout_id) {
4253                 g_source_remove (view->drag_info.release_timeout_id);
4254                 view->drag_info.release_timeout_id = 0;
4255         }
4256
4257         ev_view_presentation_transition_stop (view);
4258
4259         ev_view_set_scroll_adjustments (GTK_LAYOUT (view), NULL, NULL);
4260
4261         GTK_OBJECT_CLASS (ev_view_parent_class)->destroy (object);
4262 }
4263
4264 static void
4265 ev_view_set_property (GObject      *object,
4266                       guint         prop_id,
4267                       const GValue *value,
4268                       GParamSpec   *pspec)
4269 {
4270         EvView *view = EV_VIEW (object);
4271
4272         switch (prop_id) {
4273                 case PROP_CONTINUOUS:
4274                         ev_view_set_continuous (view, g_value_get_boolean (value));
4275                         break;
4276                 case PROP_DUAL_PAGE:
4277                         ev_view_set_dual_page (view, g_value_get_boolean (value));
4278                         break;
4279                 case PROP_FULLSCREEN:
4280                         ev_view_set_fullscreen (view, g_value_get_boolean (value));
4281                         break;
4282                 case PROP_PRESENTATION:
4283                         ev_view_set_presentation (view, g_value_get_boolean (value));
4284                         break;
4285                 case PROP_SIZING_MODE:
4286                         ev_view_set_sizing_mode (view, g_value_get_enum (value));
4287                         break;
4288                 case PROP_ZOOM:
4289                         ev_view_set_zoom (view, g_value_get_double (value), FALSE);
4290                         break;
4291                 case PROP_ROTATION:
4292                         ev_view_set_rotation (view, g_value_get_int (value));
4293                         break;
4294                 default:
4295                         G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
4296         }
4297 }
4298
4299 static AtkObject *
4300 ev_view_get_accessible (GtkWidget *widget)
4301 {
4302         static gboolean first_time = TRUE;
4303
4304         if (first_time) {
4305                 AtkObjectFactory *factory;
4306                 AtkRegistry *registry;
4307                 GType derived_type;
4308                 GType derived_atk_type;
4309
4310                 /*
4311                  * Figure out whether accessibility is enabled by looking at the
4312                  * type of the accessible object which would be created for
4313                  * the parent type of EvView.
4314                  */
4315                 derived_type = g_type_parent (EV_TYPE_VIEW);
4316
4317                 registry = atk_get_default_registry ();
4318                 factory = atk_registry_get_factory (registry,
4319                                                     derived_type);
4320                 derived_atk_type = atk_object_factory_get_accessible_type (factory);
4321                 if (g_type_is_a (derived_atk_type, GTK_TYPE_ACCESSIBLE))
4322                         atk_registry_set_factory_type (registry,
4323                                                        EV_TYPE_VIEW,
4324                                                        ev_view_accessible_factory_get_type ());
4325                 first_time = FALSE;
4326         }
4327         return GTK_WIDGET_CLASS (ev_view_parent_class)->get_accessible (widget);
4328 }
4329
4330 static void
4331 ev_view_get_property (GObject *object,
4332                       guint prop_id,
4333                       GValue *value,
4334                       GParamSpec *pspec)
4335 {
4336         EvView *view = EV_VIEW (object);
4337
4338         switch (prop_id) {
4339                 case PROP_CONTINUOUS:
4340                         g_value_set_boolean (value, view->continuous);
4341                         break;
4342                 case PROP_DUAL_PAGE:
4343                         g_value_set_boolean (value, view->dual_page);
4344                         break;
4345                 case PROP_FULLSCREEN:
4346                         g_value_set_boolean (value, view->fullscreen);
4347                         break;
4348                 case PROP_PRESENTATION:
4349                         g_value_set_boolean (value, view->presentation);
4350                         break;
4351                 case PROP_SIZING_MODE:
4352                         g_value_set_enum (value, view->sizing_mode);
4353                         break;
4354                 case PROP_ZOOM:
4355                         g_value_set_double (value, view->scale);
4356                         break;
4357                 case PROP_ROTATION:
4358                         g_value_set_int (value, view->rotation);
4359                         break;
4360                 case PROP_HAS_SELECTION:
4361                         g_value_set_boolean (value,
4362                                              view->selection_info.selections != NULL);
4363                         break;
4364                 default:
4365                         G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
4366         }
4367 }
4368
4369 static void
4370 ev_view_class_init (EvViewClass *class)
4371 {
4372         GObjectClass *object_class = G_OBJECT_CLASS (class);
4373         GtkObjectClass *gtk_object_class = GTK_OBJECT_CLASS (class);
4374         GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
4375         GtkLayoutClass *layout_class = GTK_LAYOUT_CLASS (class);
4376         GtkBindingSet *binding_set;
4377
4378         object_class->finalize = ev_view_finalize;
4379         object_class->set_property = ev_view_set_property;
4380         object_class->get_property = ev_view_get_property;
4381
4382         widget_class->expose_event = ev_view_expose_event;
4383         widget_class->button_press_event = ev_view_button_press_event;
4384         widget_class->motion_notify_event = ev_view_motion_notify_event;
4385         widget_class->button_release_event = ev_view_button_release_event;
4386         widget_class->key_press_event = ev_view_key_press_event;
4387         widget_class->focus_in_event = ev_view_focus_in;
4388         widget_class->focus_out_event = ev_view_focus_out;
4389         widget_class->get_accessible = ev_view_get_accessible;
4390         widget_class->size_request = ev_view_size_request;
4391         widget_class->size_allocate = ev_view_size_allocate;
4392         widget_class->realize = ev_view_realize;
4393         widget_class->scroll_event = ev_view_scroll_event;
4394         widget_class->enter_notify_event = ev_view_enter_notify_event;
4395         widget_class->leave_notify_event = ev_view_leave_notify_event;
4396         widget_class->style_set = ev_view_style_set;
4397         widget_class->drag_data_get = ev_view_drag_data_get;
4398         widget_class->drag_motion = ev_view_drag_motion;
4399         widget_class->popup_menu = ev_view_popup_menu;
4400         widget_class->query_tooltip = ev_view_query_tooltip;
4401
4402         gtk_object_class->destroy = ev_view_destroy;
4403
4404         layout_class->set_scroll_adjustments = ev_view_set_scroll_adjustments;
4405
4406         class->binding_activated = ev_view_scroll;
4407
4408         signals[SIGNAL_BINDING_ACTIVATED] = g_signal_new ("binding_activated",
4409                          G_TYPE_FROM_CLASS (object_class),
4410                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
4411                          G_STRUCT_OFFSET (EvViewClass, binding_activated),
4412                          NULL, NULL,
4413                          ev_view_marshal_VOID__ENUM_BOOLEAN,
4414                          G_TYPE_NONE, 2,
4415                          GTK_TYPE_SCROLL_TYPE,
4416                          G_TYPE_BOOLEAN);
4417
4418         signals[SIGNAL_ZOOM_INVALID] = g_signal_new ("zoom-invalid",
4419                          G_TYPE_FROM_CLASS (object_class),
4420                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
4421                          G_STRUCT_OFFSET (EvViewClass, zoom_invalid),
4422                          NULL, NULL,
4423                          g_cclosure_marshal_VOID__VOID,
4424                          G_TYPE_NONE, 0, G_TYPE_NONE);
4425         signals[SIGNAL_HANDLE_LINK] = g_signal_new ("handle-link",
4426                          G_TYPE_FROM_CLASS (object_class),
4427                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
4428                          G_STRUCT_OFFSET (EvViewClass, handle_link),
4429                          NULL, NULL,
4430                          g_cclosure_marshal_VOID__OBJECT,
4431                          G_TYPE_NONE, 1,
4432                          G_TYPE_OBJECT);
4433         signals[SIGNAL_EXTERNAL_LINK] = g_signal_new ("external-link",
4434                          G_TYPE_FROM_CLASS (object_class),
4435                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
4436                          G_STRUCT_OFFSET (EvViewClass, external_link),
4437                          NULL, NULL,
4438                          g_cclosure_marshal_VOID__OBJECT,
4439                          G_TYPE_NONE, 1,
4440                          G_TYPE_OBJECT);
4441         signals[SIGNAL_POPUP_MENU] = g_signal_new ("popup",
4442                          G_TYPE_FROM_CLASS (object_class),
4443                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
4444                          G_STRUCT_OFFSET (EvViewClass, popup_menu),
4445                          NULL, NULL,
4446                          g_cclosure_marshal_VOID__OBJECT,
4447                          G_TYPE_NONE, 1,
4448                          G_TYPE_OBJECT);
4449
4450
4451         g_object_class_install_property (object_class,
4452                                          PROP_CONTINUOUS,
4453                                          g_param_spec_boolean ("continuous",
4454                                                                "Continuous",
4455                                                                "Continuous scrolling mode",
4456                                                                TRUE,
4457                                                                G_PARAM_READWRITE));
4458
4459         g_object_class_install_property (object_class,
4460                                          PROP_DUAL_PAGE,
4461                                          g_param_spec_boolean ("dual-page",
4462                                                                "Dual Page",
4463                                                                "Two pages visible at once",
4464                                                                FALSE,
4465                                                                G_PARAM_READWRITE));
4466         g_object_class_install_property (object_class,
4467                                          PROP_FULLSCREEN,
4468                                          g_param_spec_boolean ("fullscreen",
4469                                                                "Full Screen",
4470                                                                "Draw page in a fullscreen fashion",
4471                                                                FALSE,
4472                                                                G_PARAM_READWRITE));
4473         g_object_class_install_property (object_class,
4474                                          PROP_PRESENTATION,
4475                                          g_param_spec_boolean ("presentation",
4476                                                                "Presentation",
4477                                                                "Draw page in presentation mode",
4478                                                                TRUE,
4479                                                                G_PARAM_READWRITE));
4480
4481         g_object_class_install_property (object_class,
4482                                          PROP_SIZING_MODE,
4483                                          g_param_spec_enum ("sizing-mode",
4484                                                             "Sizing Mode",
4485                                                             "Sizing Mode",
4486                                                             EV_TYPE_SIZING_MODE,
4487                                                             EV_SIZING_FIT_WIDTH,
4488                                                             G_PARAM_READWRITE));
4489
4490         g_object_class_install_property (object_class,
4491                                          PROP_ZOOM,
4492                                          g_param_spec_double ("zoom",
4493                                                               "Zoom factor",
4494                                                               "Zoom factor",
4495                                                               0,
4496                                                               G_MAXDOUBLE,
4497                                                               1.0,
4498                                                               G_PARAM_READWRITE));
4499         g_object_class_install_property (object_class,
4500                                          PROP_ROTATION,
4501                                          g_param_spec_double ("rotation",
4502                                                               "Rotation",
4503                                                               "Rotation",
4504                                                               0,
4505                                                               360,
4506                                                               0,
4507                                                               G_PARAM_READWRITE));
4508         g_object_class_install_property (object_class,
4509                                          PROP_HAS_SELECTION,
4510                                          g_param_spec_boolean ("has-selection",
4511                                                                "Has selection",
4512                                                                "The view has selections",
4513                                                                FALSE,
4514                                                                G_PARAM_READABLE));
4515
4516         binding_set = gtk_binding_set_by_class (class);
4517
4518         add_scroll_binding_keypad (binding_set, GDK_Left,  0, GTK_SCROLL_STEP_BACKWARD, TRUE);
4519         add_scroll_binding_keypad (binding_set, GDK_Right, 0, GTK_SCROLL_STEP_FORWARD,  TRUE);
4520         add_scroll_binding_keypad (binding_set, GDK_Left,  GDK_MOD1_MASK, GTK_SCROLL_STEP_DOWN, TRUE);
4521         add_scroll_binding_keypad (binding_set, GDK_Right, GDK_MOD1_MASK, GTK_SCROLL_STEP_UP,  TRUE);
4522         add_scroll_binding_keypad (binding_set, GDK_Up,    0, GTK_SCROLL_STEP_BACKWARD, FALSE);
4523         add_scroll_binding_keypad (binding_set, GDK_Down,  0, GTK_SCROLL_STEP_FORWARD,  FALSE);
4524         add_scroll_binding_keypad (binding_set, GDK_Up,    GDK_MOD1_MASK, GTK_SCROLL_STEP_DOWN, FALSE);
4525         add_scroll_binding_keypad (binding_set, GDK_Down,  GDK_MOD1_MASK, GTK_SCROLL_STEP_UP,  FALSE);
4526         gtk_binding_entry_add_signal (binding_set, GDK_H, 0, "binding_activated", 2, GTK_TYPE_SCROLL_TYPE,
4527                                       GTK_SCROLL_STEP_BACKWARD, G_TYPE_BOOLEAN, TRUE);
4528         gtk_binding_entry_add_signal (binding_set, GDK_J, 0, "binding_activated", 2, GTK_TYPE_SCROLL_TYPE,
4529                                       GTK_SCROLL_STEP_FORWARD, G_TYPE_BOOLEAN, FALSE);
4530         gtk_binding_entry_add_signal (binding_set, GDK_K, 0, "binding_activated", 2, GTK_TYPE_SCROLL_TYPE,
4531                                       GTK_SCROLL_STEP_BACKWARD, G_TYPE_BOOLEAN, FALSE);
4532         gtk_binding_entry_add_signal (binding_set, GDK_L, 0, "binding_activated", 2, GTK_TYPE_SCROLL_TYPE,
4533                                       GTK_SCROLL_STEP_FORWARD, G_TYPE_BOOLEAN, TRUE);
4534
4535 }
4536
4537 static void
4538 ev_view_init (EvView *view)
4539 {
4540         GTK_WIDGET_SET_FLAGS (view, GTK_CAN_FOCUS);
4541
4542         view->start_page = -1;
4543         view->end_page = -1;
4544         view->spacing = 5;
4545         view->scale = 1.0;
4546         view->current_page = 0;
4547         view->pressed_button = -1;
4548         view->cursor = EV_VIEW_CURSOR_NORMAL;
4549         view->drag_info.in_drag = FALSE;
4550         view->scroll_info.autoscrolling = FALSE;
4551         view->selection_info.selections = NULL;
4552         view->selection_info.in_selection = FALSE;
4553         view->selection_info.in_drag = FALSE;
4554         view->selection_mode = EV_VIEW_SELECTION_TEXT;
4555         view->continuous = TRUE;
4556         view->dual_page = FALSE;
4557         view->presentation = FALSE;
4558         view->presentation_state = EV_PRESENTATION_NORMAL;
4559         view->fullscreen = FALSE;
4560         view->sizing_mode = EV_SIZING_FIT_WIDTH;
4561         view->pending_scroll = SCROLL_TO_KEEP_POSITION;
4562         view->jump_to_find_result = TRUE;
4563         view->highlight_find_results = FALSE;
4564
4565         gtk_layout_set_hadjustment (GTK_LAYOUT (view), NULL);
4566         gtk_layout_set_vadjustment (GTK_LAYOUT (view), NULL);
4567 }
4568
4569 /*** Callbacks ***/
4570
4571 static void
4572 ev_view_change_page (EvView *view,
4573                      gint    new_page,
4574                      gboolean start_transition)
4575 {
4576         gint x, y;
4577
4578         view->current_page = new_page;
4579         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
4580
4581         if (view->presentation && start_transition)
4582                 ev_view_presentation_transition_start (view);
4583
4584         gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
4585         ev_view_handle_cursor_over_xy (view, x, y);
4586
4587         gtk_widget_queue_resize (GTK_WIDGET (view));
4588 }
4589
4590 static void
4591 ev_view_transition_animation_finish (EvTransitionAnimation *animation,
4592                                      EvView                *view)
4593 {
4594         g_object_unref (view->animation);
4595         view->animation = NULL;
4596         ev_view_change_page (view, view->current_page, TRUE);
4597 }
4598
4599 /**
4600  * ev_view_transition_animation_cancel:
4601  * @animation: Animation to finish
4602  * @view: An EvView
4603  *
4604  * Does almost the same as cancel, but without scheduling the transition.
4605  */
4606
4607 static void
4608 ev_view_transition_animation_cancel (EvTransitionAnimation *animation,
4609                                      EvView                *view)
4610 {
4611         g_object_unref (view->animation);
4612         view->animation = NULL;
4613         ev_view_change_page (view, view->current_page, FALSE);
4614 }
4615
4616 static void
4617 ev_view_transition_animation_frame (EvTransitionAnimation *animation,
4618                                     gdouble                progress,
4619                                     EvView                *view)
4620 {
4621         gtk_widget_queue_draw (GTK_WIDGET (view));
4622 }
4623
4624 static void
4625 ev_view_presentation_animation_start (EvView *view,
4626                                       int     new_page)
4627 {
4628         EvTransitionEffect *effect = NULL;
4629         cairo_surface_t *surface;
4630
4631         if (EV_IS_DOCUMENT_TRANSITION (view->document))
4632                 effect = ev_document_transition_get_effect (EV_DOCUMENT_TRANSITION (view->document),
4633                                                             view->current_page);
4634         if (!effect)
4635                 return;
4636
4637         view->animation = ev_transition_animation_new (effect);
4638
4639         surface = ev_pixbuf_cache_get_surface (view->pixbuf_cache, view->current_page);
4640         ev_transition_animation_set_origin_surface (view->animation, surface);
4641         surface = ev_pixbuf_cache_get_surface (view->pixbuf_cache, new_page);
4642         if (surface)
4643                 ev_transition_animation_set_dest_surface (view->animation, surface);
4644
4645         g_signal_connect (view->animation, "frame",
4646                           G_CALLBACK (ev_view_transition_animation_frame), view);
4647         g_signal_connect (view->animation, "finished",
4648                           G_CALLBACK (ev_view_transition_animation_finish), view);
4649 }
4650
4651 static void
4652 job_finished_cb (EvPixbufCache *pixbuf_cache,
4653                  GdkRegion     *region,
4654                  EvView        *view)
4655 {
4656         if (view->animation) {
4657                 cairo_surface_t *surface;
4658
4659                 surface = ev_pixbuf_cache_get_surface (pixbuf_cache, view->current_page);
4660                 ev_transition_animation_set_dest_surface (view->animation, surface);
4661         }
4662
4663         if (region) {
4664                 gdk_window_invalidate_region (view->layout.bin_window,
4665                                               region, TRUE);
4666         } else {
4667                 gtk_widget_queue_draw (GTK_WIDGET (view));
4668         }
4669 }
4670
4671 static void
4672 page_changed_cb (EvPageCache *page_cache,
4673                  int          new_page,
4674                  EvView      *view)
4675 {
4676         if (view->current_page != new_page) {
4677                 if (view->presentation)
4678                         ev_view_presentation_animation_start (view, new_page);
4679
4680                 ev_view_change_page (view, new_page, TRUE);
4681         } else {
4682                 gtk_widget_queue_draw (GTK_WIDGET (view));
4683         }
4684
4685         view->find_result = 0;
4686 }
4687
4688 static void
4689 on_adjustment_value_changed (GtkAdjustment *adjustment,
4690                              EvView        *view)
4691 {
4692         int dx = 0, dy = 0;
4693         gint x, y;
4694         GList *children, *l;
4695
4696         if (! GTK_WIDGET_REALIZED (view))
4697                 return;
4698
4699         if (view->hadjustment) {
4700                 dx = view->scroll_x - (int) view->hadjustment->value;
4701                 view->scroll_x = (int) view->hadjustment->value;
4702         } else {
4703                 view->scroll_x = 0;
4704         }
4705
4706         if (view->vadjustment) {
4707                 dy = view->scroll_y - (int) view->vadjustment->value;
4708                 view->scroll_y = (int) view->vadjustment->value;
4709         } else {
4710                 view->scroll_y = 0;
4711         }
4712
4713         children = gtk_container_get_children (GTK_CONTAINER (view));
4714         for (l = children; l && l->data; l = g_list_next (l)) {
4715                 gint       child_x, child_y;
4716                 GtkWidget *child = (GtkWidget *)l->data;
4717
4718                 gtk_container_child_get (GTK_CONTAINER (view),
4719                                          child,
4720                                          "x", &child_x,
4721                                          "y", &child_y,
4722                                          NULL);
4723                 gtk_layout_move (GTK_LAYOUT (view), child, child_x + dx, child_y + dy);
4724         }
4725         g_list_free (children);
4726
4727         for (l = view->window_children; l && l->data; l = g_list_next (l)) {
4728                 EvViewWindowChild *child;
4729
4730                 child = (EvViewWindowChild *)l->data;
4731
4732                 ev_view_window_child_move (view, child, child->x + dx, child->y + dy);
4733         }
4734
4735         if (view->pending_resize)
4736                 gtk_widget_queue_draw (GTK_WIDGET (view));
4737         else
4738                 gdk_window_scroll (view->layout.bin_window, dx, dy);
4739
4740         gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
4741         ev_view_handle_cursor_over_xy (view, x, y);
4742
4743         if (view->document)
4744                 view_update_range_and_current_page (view);
4745 }
4746
4747 GtkWidget*
4748 ev_view_new (void)
4749 {
4750         GtkWidget *view;
4751
4752         view = g_object_new (EV_TYPE_VIEW, NULL);
4753
4754         return view;
4755 }
4756
4757 static void
4758 setup_caches (EvView *view)
4759 {
4760         view->page_cache = ev_page_cache_get (view->document);
4761         g_signal_connect (view->page_cache, "page-changed", G_CALLBACK (page_changed_cb), view);
4762         view->pixbuf_cache = ev_pixbuf_cache_new (GTK_WIDGET (view), view->document);
4763         g_signal_connect (view->pixbuf_cache, "job-finished", G_CALLBACK (job_finished_cb), view);
4764         page_changed_cb (view->page_cache,
4765                          ev_page_cache_get_current_page (view->page_cache),
4766                          view);
4767 }
4768
4769 static void
4770 clear_caches (EvView *view)
4771 {
4772         if (view->pixbuf_cache) {
4773                 g_object_unref (view->pixbuf_cache);
4774                 view->pixbuf_cache = NULL;
4775         }
4776
4777         if (view->page_cache) {
4778                 view->page_cache = NULL;
4779         }
4780 }
4781
4782 void
4783 ev_view_set_loading (EvView       *view,
4784                      gboolean      loading)
4785 {
4786         view->loading = loading;
4787         gtk_widget_queue_draw (GTK_WIDGET (view));
4788 }
4789
4790 static gboolean
4791 ev_view_autoscroll_cb (EvView *view)
4792 {
4793         gdouble speed, value;
4794
4795         /* If the user stops autoscrolling, autoscrolling will be
4796          * set to false but the timeout will continue; stop the timeout: */
4797         if (!view->scroll_info.autoscrolling) {
4798                 view->scroll_info.timeout_id = 0;
4799                 return FALSE;
4800         }
4801
4802         if (view->scroll_info.last_y > view->scroll_info.start_y &&
4803                 (view->scroll_info.last_y < view->scroll_info.start_y))
4804                 return TRUE;
4805
4806         /* Replace 100 with your speed of choice: The lower the faster.
4807          * Replace 3 with another speed of choice: The higher, the faster it accelerated
4808          *      based on the distance of the starting point from the mouse
4809          * (All also effected by the timeout interval of this callback) */
4810
4811         if (view->scroll_info.start_y > view->scroll_info.last_y)
4812                 speed = -pow ((((gdouble)view->scroll_info.start_y - view->scroll_info.last_y) / 100), 3);
4813         else
4814                 speed = pow ((((gdouble)view->scroll_info.last_y - view->scroll_info.start_y) / 100), 3);
4815
4816         value = gtk_adjustment_get_value (view->vadjustment);
4817         value = CLAMP (value + speed, 0, view->vadjustment->upper - view->vadjustment->page_size);
4818         gtk_adjustment_set_value (view->vadjustment, value);
4819
4820         return TRUE;
4821
4822 }
4823
4824 void
4825 ev_view_autoscroll_start (EvView *view)
4826 {
4827         gint x, y;
4828
4829         g_return_if_fail (EV_IS_VIEW (view));
4830
4831         if (view->scroll_info.autoscrolling)
4832                 return;
4833
4834         view->scroll_info.autoscrolling = TRUE;
4835         view->scroll_info.timeout_id =
4836                 g_timeout_add (20, (GSourceFunc)ev_view_autoscroll_cb,
4837                                view);
4838
4839         gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
4840         ev_view_handle_cursor_over_xy (view, x, y);
4841 }
4842
4843 void
4844 ev_view_autoscroll_stop (EvView *view)
4845 {
4846         gint x, y;
4847
4848         g_return_if_fail (EV_IS_VIEW (view));
4849
4850         if (!view->scroll_info.autoscrolling)
4851                 return;
4852
4853         view->scroll_info.autoscrolling = FALSE;
4854         if (view->scroll_info.timeout_id) {
4855                 g_source_remove (view->scroll_info.timeout_id);
4856                 view->scroll_info.timeout_id = 0;
4857         }
4858
4859         gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
4860         ev_view_handle_cursor_over_xy (view, x, y);
4861 }
4862
4863 void
4864 ev_view_set_document (EvView     *view,
4865                       EvDocument *document)
4866 {
4867         g_return_if_fail (EV_IS_VIEW (view));
4868
4869         view->loading = FALSE;
4870
4871         if (document != view->document) {
4872                 clear_caches (view);
4873
4874                 if (view->document) {
4875                         g_object_unref (view->document);
4876                         view->page_cache = NULL;
4877                 }
4878
4879                 view->document = document;
4880                 view->find_result = 0;
4881
4882                 if (view->document) {
4883                         g_object_ref (view->document);
4884                         setup_caches (view);
4885                 }
4886
4887                 view_update_range_and_current_page (view);
4888
4889                 gtk_widget_queue_resize (GTK_WIDGET (view));
4890         }
4891 }
4892
4893 static void
4894 ev_view_reload_page (EvView    *view,
4895                      gint       page,
4896                      GdkRegion *region)
4897 {
4898         ev_pixbuf_cache_reload_page (view->pixbuf_cache,
4899                                      region,
4900                                      page,
4901                                      view->rotation,
4902                                      view->scale);
4903 }
4904
4905 void
4906 ev_view_reload (EvView *view)
4907 {
4908         ev_pixbuf_cache_clear (view->pixbuf_cache);
4909         view_update_range_and_current_page (view);
4910 }
4911
4912 /*** Zoom and sizing mode ***/
4913
4914 #define EPSILON 0.0000001
4915 void
4916 ev_view_set_zoom (EvView   *view,
4917                   double    factor,
4918                   gboolean  relative)
4919 {
4920         double scale;
4921
4922         if (relative)
4923                 scale = view->scale * factor;
4924         else
4925                 scale = factor;
4926
4927         scale = CLAMP (scale,
4928                        view->sizing_mode == EV_SIZING_FREE ? view->min_scale : 0,
4929                        view->max_scale);
4930
4931         if (scale == view->scale)
4932                 return;
4933
4934         if (ABS (view->scale - scale) < EPSILON)
4935                 return;
4936
4937         if (view->loading_text) {
4938                 cairo_surface_destroy (view->loading_text);
4939                 view->loading_text = NULL;
4940         }
4941
4942         view->scale = scale;
4943         view->pending_resize = TRUE;
4944
4945         gtk_widget_queue_resize (GTK_WIDGET (view));
4946
4947         g_object_notify (G_OBJECT (view), "zoom");
4948 }
4949
4950 double
4951 ev_view_get_zoom (EvView *view)
4952 {
4953         return view->scale;
4954 }
4955
4956 void
4957 ev_view_set_screen_dpi (EvView  *view,
4958                         gdouble  dpi)
4959 {
4960         g_return_if_fail (EV_IS_VIEW (view));
4961         g_return_if_fail (dpi > 0);
4962
4963         view->dpi = dpi;
4964         view->min_scale = MIN_SCALE * dpi / 72.0;
4965         view->max_scale = MAX_SCALE * dpi / 72.0;
4966 }
4967
4968 gboolean
4969 ev_view_get_continuous (EvView *view)
4970 {
4971         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
4972
4973         return view->continuous;
4974 }
4975
4976 void
4977 ev_view_set_continuous (EvView   *view,
4978                         gboolean  continuous)
4979 {
4980         g_return_if_fail (EV_IS_VIEW (view));
4981
4982         continuous = continuous != FALSE;
4983
4984         if (view->continuous != continuous) {
4985                 view->continuous = continuous;
4986                 view->pending_scroll = SCROLL_TO_PAGE_POSITION;
4987                 gtk_widget_queue_resize (GTK_WIDGET (view));
4988         }
4989
4990         g_object_notify (G_OBJECT (view), "continuous");
4991 }
4992
4993 gboolean
4994 ev_view_get_dual_page (EvView *view)
4995 {
4996         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
4997
4998         return view->dual_page;
4999 }
5000
5001 void
5002 ev_view_set_dual_page (EvView   *view,
5003                        gboolean  dual_page)
5004 {
5005         g_return_if_fail (EV_IS_VIEW (view));
5006
5007         dual_page = dual_page != FALSE;
5008
5009         if (view->dual_page == dual_page)
5010                 return;
5011
5012         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
5013         view->dual_page = dual_page;
5014         /* FIXME: if we're keeping the pixbuf cache around, we should extend the
5015          * preload_cache_size to be 2 if dual_page is set.
5016          */
5017         gtk_widget_queue_resize (GTK_WIDGET (view));
5018
5019         g_object_notify (G_OBJECT (view), "dual-page");
5020 }
5021
5022 void
5023 ev_view_set_fullscreen (EvView   *view,
5024                          gboolean  fullscreen)
5025 {
5026         g_return_if_fail (EV_IS_VIEW (view));
5027
5028         fullscreen = fullscreen != FALSE;
5029
5030         if (view->fullscreen == fullscreen)
5031                 return;
5032
5033         view->fullscreen = fullscreen;
5034         gtk_widget_queue_resize (GTK_WIDGET (view));
5035
5036         g_object_notify (G_OBJECT (view), "fullscreen");
5037 }
5038
5039 gboolean
5040 ev_view_get_fullscreen (EvView *view)
5041 {
5042         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
5043
5044         return view->fullscreen;
5045 }
5046
5047 void
5048 ev_view_set_presentation (EvView   *view,
5049                           gboolean  presentation)
5050 {
5051         g_return_if_fail (EV_IS_VIEW (view));
5052
5053         presentation = presentation != FALSE;
5054
5055         if (view->presentation == presentation)
5056                 return;
5057
5058         if (!presentation)
5059                 view->presentation_state = EV_PRESENTATION_NORMAL;
5060
5061         view->presentation = presentation;
5062         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
5063
5064         if (presentation) {
5065                 view->sizing_mode_saved = view->sizing_mode;
5066                 view->scale_saved = view->scale;
5067                 ev_view_set_sizing_mode (view, EV_SIZING_BEST_FIT);
5068         } else {
5069                 ev_view_set_sizing_mode (view, view->sizing_mode_saved);
5070                 ev_view_set_zoom (view, view->scale_saved, FALSE);
5071         }
5072
5073         gtk_widget_queue_resize (GTK_WIDGET (view));
5074
5075         if (presentation)
5076                 ev_view_presentation_transition_start (view);
5077         else {
5078                 ev_view_presentation_transition_stop (view);
5079
5080                 if (view->animation) {
5081                         /* stop any running animation */
5082                         ev_view_transition_animation_cancel (view->animation, view);
5083                 }
5084         }
5085
5086         if (GTK_WIDGET_REALIZED (view)) {
5087                 if (view->presentation)
5088                         gdk_window_set_background (view->layout.bin_window,
5089                                                    &GTK_WIDGET (view)->style->black);
5090                 else
5091                         gdk_window_set_background (view->layout.bin_window,
5092                                                    &GTK_WIDGET (view)->style->mid [GTK_STATE_NORMAL]);
5093         }
5094
5095         g_object_notify (G_OBJECT (view), "presentation");
5096 }
5097
5098 gboolean
5099 ev_view_get_presentation (EvView *view)
5100 {
5101         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
5102
5103         return view->presentation;
5104 }
5105
5106 static gboolean
5107 transition_next_page (EvView *view)
5108 {
5109         ev_view_next_page (view);
5110
5111         return FALSE;
5112 }
5113
5114 static void
5115 ev_view_presentation_transition_stop (EvView *view)
5116 {
5117         if (view->trans_timeout_id > 0)
5118                 g_source_remove (view->trans_timeout_id);
5119         view->trans_timeout_id = 0;
5120 }
5121
5122 static void
5123 ev_view_presentation_transition_start (EvView *view)
5124 {
5125         gdouble duration;
5126
5127         if (!EV_IS_DOCUMENT_TRANSITION (view->document))
5128                 return;
5129
5130         ev_view_presentation_transition_stop (view);
5131
5132         duration = ev_document_transition_get_page_duration (EV_DOCUMENT_TRANSITION (view->document),
5133                                                              view->current_page);
5134         if (duration > 0) {
5135                 view->trans_timeout_id =
5136                         g_timeout_add_seconds (duration,
5137                                                (GSourceFunc) transition_next_page,
5138                                                view);
5139         }
5140 }
5141
5142 void
5143 ev_view_set_sizing_mode (EvView       *view,
5144                          EvSizingMode  sizing_mode)
5145 {
5146         g_return_if_fail (EV_IS_VIEW (view));
5147
5148         if (view->sizing_mode == sizing_mode)
5149                 return;
5150
5151         view->sizing_mode = sizing_mode;
5152         gtk_widget_queue_resize (GTK_WIDGET (view));
5153
5154         g_object_notify (G_OBJECT (view), "sizing-mode");
5155 }
5156
5157 EvSizingMode
5158 ev_view_get_sizing_mode (EvView *view)
5159 {
5160         g_return_val_if_fail (EV_IS_VIEW (view), EV_SIZING_FREE);
5161
5162         return view->sizing_mode;
5163 }
5164
5165 gboolean
5166 ev_view_can_zoom_in (EvView *view)
5167 {
5168         return view->scale * ZOOM_IN_FACTOR <= view->max_scale;
5169 }
5170
5171 gboolean
5172 ev_view_can_zoom_out (EvView *view)
5173 {
5174         return view->scale * ZOOM_OUT_FACTOR >= view->min_scale;
5175 }
5176
5177 void
5178 ev_view_zoom_in (EvView *view)
5179 {
5180         g_return_if_fail (view->sizing_mode == EV_SIZING_FREE);
5181
5182         if (view->presentation)
5183                 return;
5184
5185         view->pending_scroll = SCROLL_TO_CENTER;
5186         ev_view_set_zoom (view, ZOOM_IN_FACTOR, TRUE);
5187 }
5188
5189 void
5190 ev_view_zoom_out (EvView *view)
5191 {
5192         g_return_if_fail (view->sizing_mode == EV_SIZING_FREE);
5193
5194         if (view->presentation)
5195                 return;
5196
5197         view->pending_scroll = SCROLL_TO_CENTER;
5198         ev_view_set_zoom (view, ZOOM_OUT_FACTOR, TRUE);
5199 }
5200
5201 void
5202 ev_view_rotate_right (EvView *view)
5203 {
5204         int rotation = view->rotation + 90;
5205
5206         if (rotation >= 360) {
5207                 rotation -= 360;
5208         }
5209
5210         ev_view_set_rotation (view, rotation);
5211 }
5212
5213 void
5214 ev_view_rotate_left (EvView *view)
5215 {
5216         int rotation = view->rotation - 90;
5217
5218         if (rotation < 0) {
5219                 rotation += 360;
5220         }
5221
5222         ev_view_set_rotation (view, rotation);
5223 }
5224
5225 void
5226 ev_view_set_rotation (EvView *view, int rotation)
5227 {
5228         view->rotation = rotation;
5229
5230         if (view->pixbuf_cache) {
5231                 ev_pixbuf_cache_clear (view->pixbuf_cache);
5232                 gtk_widget_queue_resize (GTK_WIDGET (view));
5233         }
5234
5235         if (rotation != 0)
5236                 clear_selection (view);
5237
5238         g_object_notify (G_OBJECT (view), "rotation");
5239 }
5240
5241 int
5242 ev_view_get_rotation (EvView *view)
5243 {
5244         return view->rotation;
5245 }
5246
5247 static double
5248 zoom_for_size_fit_width (gdouble doc_width,
5249                          gdouble doc_height,
5250                          int     target_width,
5251                          int     target_height,
5252                          int     vsb_width)
5253 {
5254         double scale;
5255
5256         scale = (double)target_width / doc_width;
5257
5258         if (doc_height * scale > target_height)
5259                 scale = (double) (target_width - vsb_width) / doc_width;
5260
5261         return scale;
5262 }
5263
5264 static double
5265 zoom_for_size_fit_height (gdouble doc_width,
5266                           gdouble doc_height,
5267                           int     target_width,
5268                           int     target_height,
5269                           int     vsb_height)
5270 {
5271         double scale;
5272
5273         scale = (double)target_height / doc_height;
5274
5275         if (doc_width * scale > target_width)
5276                 scale = (double) (target_height - vsb_height) / doc_height;
5277
5278         return scale;
5279 }
5280
5281 static double
5282 zoom_for_size_best_fit (gdouble doc_width,
5283                         gdouble doc_height,
5284                         int     target_width,
5285                         int     target_height,
5286                         int     vsb_width,
5287                         int     hsb_width)
5288 {
5289         double w_scale;
5290         double h_scale;
5291
5292         w_scale = (double)target_width / doc_width;
5293         h_scale = (double)target_height / doc_height;
5294
5295         if (doc_height * w_scale > target_height)
5296                 w_scale = (double) (target_width - vsb_width) / doc_width;
5297         if (doc_width * h_scale > target_width)
5298                 h_scale = (double) (target_height - hsb_width) / doc_height;
5299
5300         return MIN (w_scale, h_scale);
5301 }
5302
5303
5304 static void
5305 ev_view_zoom_for_size_presentation (EvView *view,
5306                                     int     width,
5307                                     int     height)
5308 {
5309         gdouble doc_width, doc_height;
5310         gdouble scale;
5311
5312         get_doc_page_size (view, view->current_page, &doc_width, &doc_height);
5313         scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, 0, 0);
5314         ev_view_set_zoom (view, scale, FALSE);
5315 }
5316
5317 static void
5318 ev_view_zoom_for_size_continuous_and_dual_page (EvView *view,
5319                            int     width,
5320                            int     height,
5321                            int     vsb_width,
5322                            int     hsb_height)
5323 {
5324         gdouble doc_width, doc_height;
5325         GtkBorder border;
5326         gdouble scale;
5327
5328         ev_document_get_max_page_size (view->document, &doc_width, &doc_height);
5329         if (view->rotation == 90 || view->rotation == 270) {
5330                 gdouble tmp;
5331
5332                 tmp = doc_width;
5333                 doc_width = doc_height;
5334                 doc_height = tmp;
5335         }
5336
5337         compute_border (view, doc_width, doc_height, &border);
5338
5339         doc_width *= 2;
5340         width -= (2 * (border.left + border.right) + 3 * view->spacing);
5341         height -= (border.top + border.bottom + 2 * view->spacing - 1);
5342
5343         /* FIXME: We really need to calculate the overall height here, not the
5344          * page height.  We assume there's always a vertical scrollbar for
5345          * now.  We need to fix this. */
5346         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
5347                 scale = zoom_for_size_fit_width (doc_width, doc_height, width - vsb_width, height, 0);
5348         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
5349                 scale = zoom_for_size_best_fit (doc_width, doc_height, width - vsb_width, height, 0, hsb_height);
5350         else
5351                 g_assert_not_reached ();
5352
5353         ev_view_set_zoom (view, scale, FALSE);
5354 }
5355
5356 static void
5357 ev_view_zoom_for_size_continuous (EvView *view,
5358                                   int     width,
5359                                   int     height,
5360                                   int     vsb_width,
5361                                   int     hsb_height)
5362 {
5363         gdouble doc_width, doc_height;
5364         GtkBorder border;
5365         gdouble scale;
5366
5367         ev_document_get_max_page_size (view->document, &doc_width, &doc_height);
5368         if (view->rotation == 90 || view->rotation == 270) {
5369                 gdouble tmp;
5370
5371                 tmp = doc_width;
5372                 doc_width = doc_height;
5373                 doc_height = tmp;
5374         }
5375
5376         compute_border (view, doc_width, doc_height, &border);
5377
5378         width -= (border.left + border.right + 2 * view->spacing);
5379         height -= (border.top + border.bottom + 2 * view->spacing - 1);
5380
5381         /* FIXME: We really need to calculate the overall height here, not the
5382          * page height.  We assume there's always a vertical scrollbar for
5383          * now.  We need to fix this. */
5384         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
5385                 scale = zoom_for_size_fit_width (doc_width, doc_height, width - vsb_width, height, 0);
5386         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
5387                 scale = zoom_for_size_best_fit (doc_width, doc_height, width - vsb_width, height, 0, hsb_height);
5388         else
5389                 g_assert_not_reached ();
5390
5391         ev_view_set_zoom (view, scale, FALSE);
5392 }
5393
5394 static void
5395 ev_view_zoom_for_size_dual_page (EvView *view,
5396                                  int     width,
5397                                  int     height,
5398                                  int     vsb_width,
5399                                  int     hsb_height)
5400 {
5401         GtkBorder border;
5402         gdouble doc_width, doc_height;
5403         gdouble scale;
5404         gint other_page;
5405
5406         other_page = view->current_page ^ 1;
5407
5408         /* Find the largest of the two. */
5409         get_doc_page_size (view, view->current_page, &doc_width, &doc_height);
5410         if (other_page < ev_document_get_n_pages (view->document)) {
5411                 gdouble width_2, height_2;
5412
5413                 get_doc_page_size (view, other_page, &width_2, &height_2);
5414                 if (width_2 > doc_width)
5415                         doc_width = width_2;
5416                 if (height_2 > doc_height)
5417                         doc_height = height_2;
5418         }
5419         compute_border (view, width, height, &border);
5420
5421         doc_width = doc_width * 2;
5422         width -= ((border.left + border.right)* 2 + 3 * view->spacing);
5423         height -= (border.top + border.bottom + 2 * view->spacing);
5424
5425         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
5426                 scale = zoom_for_size_fit_width (doc_width, doc_height, width, height, vsb_width);
5427         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
5428                 scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, vsb_width, hsb_height);
5429         else
5430                 g_assert_not_reached ();
5431
5432         ev_view_set_zoom (view, scale, FALSE);
5433 }
5434
5435 static void
5436 ev_view_zoom_for_size_single_page (EvView *view,
5437                                    int     width,
5438                                    int     height,
5439                                    int     vsb_width,
5440                                    int     hsb_height)
5441 {
5442         gdouble doc_width, doc_height;
5443         GtkBorder border;
5444         gdouble scale;
5445
5446         get_doc_page_size (view, view->current_page, &doc_width, &doc_height);
5447
5448         /* Get an approximate border */
5449         compute_border (view, width, height, &border);
5450
5451         width -= (border.left + border.right + 2 * view->spacing);
5452         height -= (border.top + border.bottom + 2 * view->spacing);
5453
5454         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
5455                 scale = zoom_for_size_fit_width (doc_width, doc_height, width, height, vsb_width);
5456         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
5457                 scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, vsb_width, hsb_height);
5458         else
5459                 g_assert_not_reached ();
5460
5461         ev_view_set_zoom (view, scale, FALSE);
5462 }
5463
5464 void
5465 ev_view_set_zoom_for_size (EvView *view,
5466                            int     width,
5467                            int     height,
5468                            int     vsb_width,
5469                            int     hsb_height)
5470 {
5471         g_return_if_fail (EV_IS_VIEW (view));
5472         g_return_if_fail (view->sizing_mode == EV_SIZING_FIT_WIDTH ||
5473                           view->sizing_mode == EV_SIZING_BEST_FIT);
5474         g_return_if_fail (width >= 0);
5475         g_return_if_fail (height >= 0);
5476
5477         if (view->document == NULL)
5478                 return;
5479
5480         if (view->presentation)
5481                 ev_view_zoom_for_size_presentation (view, width, height);
5482         else if (view->continuous && view->dual_page)
5483                 ev_view_zoom_for_size_continuous_and_dual_page (view, width, height, vsb_width, hsb_height);
5484         else if (view->continuous)
5485                 ev_view_zoom_for_size_continuous (view, width, height, vsb_width, hsb_height);
5486         else if (view->dual_page)
5487                 ev_view_zoom_for_size_dual_page (view, width, height, vsb_width, hsb_height);
5488         else
5489                 ev_view_zoom_for_size_single_page (view, width, height, vsb_width, hsb_height);
5490 }
5491
5492 /*** Find ***/
5493 static gint
5494 ev_view_find_get_n_results (EvView *view, gint page)
5495 {
5496         return view->find_pages ? g_list_length (view->find_pages[page]) : 0;
5497 }
5498
5499 static EvRectangle *
5500 ev_view_find_get_result (EvView *view, gint page, gint result)
5501 {
5502         return view->find_pages ? (EvRectangle *) g_list_nth_data (view->find_pages[page], result) : NULL;
5503 }
5504
5505 static void
5506 jump_to_find_result (EvView *view)
5507 {
5508         gint n_results;
5509         gint page = view->current_page;
5510
5511         n_results = ev_view_find_get_n_results (view, page);
5512
5513         if (n_results > 0 && view->find_result < n_results) {
5514                 EvRectangle *rect;
5515                 GdkRectangle view_rect;
5516
5517                 rect = ev_view_find_get_result (view, page, view->find_result);
5518                 doc_rect_to_view_rect (view, page, rect, &view_rect);
5519                 ensure_rectangle_is_visible (view, &view_rect);
5520                 view->jump_to_find_result = FALSE;
5521         }
5522 }
5523
5524 /**
5525  * jump_to_find_page
5526  * @view: #EvView instance
5527  * @direction: Direction to look
5528  * @shift: Shift from current page
5529  *
5530  * Jumps to the first page that has occurences of searched word.
5531  * Uses a direction where to look and a shift from current page.
5532  *
5533  */
5534 static void
5535 jump_to_find_page (EvView *view, EvViewFindDirection direction, gint shift)
5536 {
5537         int n_pages, i;
5538
5539         n_pages = ev_document_get_n_pages (view->document);
5540
5541         for (i = 0; i < n_pages; i++) {
5542                 int page;
5543
5544                 if (direction == EV_VIEW_FIND_NEXT)
5545                         page = view->current_page + i;
5546                 else
5547                         page = view->current_page - i;
5548                 page += shift;
5549
5550                 if (page >= n_pages) {
5551                         page = page - n_pages;
5552                 } else if (page < 0)
5553                         page = page + n_pages;
5554
5555                 if (ev_view_find_get_n_results (view, page) > 0) {
5556                         ev_page_cache_set_current_page (view->page_cache, page);
5557                         break;
5558                 }
5559         }
5560 }
5561
5562 void
5563 ev_view_find_changed (EvView *view, GList **results, gint page)
5564 {
5565         view->find_pages = results;
5566
5567         if (view->jump_to_find_result == TRUE) {
5568                 jump_to_find_page (view, EV_VIEW_FIND_NEXT, 0);
5569                 jump_to_find_result (view);
5570         }
5571
5572         if (view->current_page == page)
5573                 gtk_widget_queue_draw (GTK_WIDGET (view));
5574 }
5575
5576 void
5577 ev_view_find_next (EvView *view)
5578 {
5579         gint n_results;
5580
5581         n_results = ev_view_find_get_n_results (view, view->current_page);
5582         view->find_result++;
5583
5584         if (view->find_result >= n_results) {
5585                 view->find_result = 0;
5586                 jump_to_find_page (view, EV_VIEW_FIND_NEXT, 1);
5587                 jump_to_find_result (view);
5588         } else {
5589                 jump_to_find_result (view);
5590                 gtk_widget_queue_draw (GTK_WIDGET (view));
5591         }
5592 }
5593
5594 void
5595 ev_view_find_previous (EvView *view)
5596 {
5597         view->find_result--;
5598
5599         if (view->find_result < 0) {
5600                 jump_to_find_page (view, EV_VIEW_FIND_PREV, -1);
5601                 view->find_result = MAX (0, ev_view_find_get_n_results (view, view->current_page) - 1);
5602                 jump_to_find_result (view);
5603         } else {
5604                 jump_to_find_result (view);
5605                 gtk_widget_queue_draw (GTK_WIDGET (view));
5606         }
5607 }
5608
5609 void
5610 ev_view_find_search_changed (EvView *view)
5611 {
5612         /* search string has changed, focus on new search result */
5613         view->jump_to_find_result = TRUE;
5614         view->find_pages = NULL;
5615 }
5616
5617 void
5618 ev_view_find_set_highlight_search (EvView *view, gboolean value)
5619 {
5620         view->highlight_find_results = value;
5621         gtk_widget_queue_draw (GTK_WIDGET (view));
5622 }
5623
5624 void
5625 ev_view_find_cancel (EvView *view)
5626 {
5627         view->find_pages = NULL;
5628 }
5629
5630 /*** Selections ***/
5631
5632 /* compute_new_selection_rect/text calculates the area currently selected by
5633  * view_rect.  each handles a different mode;
5634  */
5635 static GList *
5636 compute_new_selection_rect (EvView       *view,
5637                             GdkPoint     *start,
5638                             GdkPoint     *stop)
5639 {
5640         GdkRectangle view_rect;
5641         int n_pages, i;
5642         GList *list = NULL;
5643
5644         g_assert (view->selection_mode == EV_VIEW_SELECTION_RECTANGLE);
5645
5646         view_rect.x = MIN (start->x, stop->x);
5647         view_rect.y = MIN (start->y, stop->y);
5648         view_rect.width = MAX (start->x, stop->x) - view_rect.x;
5649         view_rect.width = MAX (start->y, stop->y) - view_rect.y;
5650
5651         n_pages = ev_document_get_n_pages (view->document);
5652
5653         for (i = 0; i < n_pages; i++) {
5654                 GdkRectangle page_area;
5655                 GtkBorder border;
5656
5657                 if (get_page_extents (view, i, &page_area, &border)) {
5658                         GdkRectangle overlap;
5659
5660                         if (gdk_rectangle_intersect (&page_area, &view_rect, &overlap)) {
5661                                 EvViewSelection *selection;
5662
5663                                 selection = g_new0 (EvViewSelection, 1);
5664                                 selection->page = i;
5665                                 view_rect_to_doc_rect (view, &overlap, &page_area,
5666                                                        &(selection->rect));
5667
5668                                 list = g_list_append (list, selection);
5669                         }
5670                 }
5671         }
5672
5673         return list;
5674 }
5675
5676 static gboolean
5677 gdk_rectangle_point_in (GdkRectangle *rectangle,
5678                         GdkPoint     *point)
5679 {
5680         return rectangle->x <= point->x &&
5681                 rectangle->y <= point->y &&
5682                 point->x < rectangle->x + rectangle->width &&
5683                 point->y < rectangle->y + rectangle->height;
5684 }
5685
5686 static GList *
5687 compute_new_selection_text (EvView          *view,
5688                             EvSelectionStyle style,
5689                             GdkPoint        *start,
5690                             GdkPoint        *stop)
5691 {
5692         int n_pages, i, first, last;
5693         GList *list = NULL;
5694         EvViewSelection *selection;
5695         gdouble width, height;
5696         int start_page, end_page;
5697
5698         g_assert (view->selection_mode == EV_VIEW_SELECTION_TEXT);
5699
5700         n_pages = ev_document_get_n_pages (view->document);
5701
5702         /* First figure out the range of pages the selection
5703          * affects. */
5704         first = n_pages;
5705         last = 0;
5706         if (view->continuous) {
5707                 start_page = 0;
5708                 end_page = n_pages;
5709         } else if (view->dual_page) {
5710                 start_page = view->start_page;
5711                 end_page = view->end_page + 1;
5712         } else {
5713                 start_page = view->current_page;
5714                 end_page = view->current_page + 1;
5715         }
5716
5717         for (i = start_page; i < end_page; i++) {
5718                 GdkRectangle page_area;
5719                 GtkBorder border;
5720
5721                 get_page_extents (view, i, &page_area, &border);
5722                 if (gdk_rectangle_point_in (&page_area, start) ||
5723                     gdk_rectangle_point_in (&page_area, stop)) {
5724                         if (first == n_pages)
5725                                 first = i;
5726                         last = i;
5727                 }
5728
5729         }
5730
5731         /* Now create a list of EvViewSelection's for the affected
5732          * pages.  This could be an empty list, a list of just one
5733          * page or a number of pages.*/
5734         for (i = first; i < last + 1; i++) {
5735                 GdkRectangle page_area;
5736                 GtkBorder border;
5737                 GdkPoint *point;
5738
5739                 get_doc_page_size (view, i, &width, &height);
5740
5741                 selection = g_new0 (EvViewSelection, 1);
5742                 selection->page = i;
5743                 selection->style = style;
5744                 selection->rect.x1 = selection->rect.y1 = 0;
5745                 selection->rect.x2 = width;
5746                 selection->rect.y2 = height;
5747
5748                 get_page_extents (view, i, &page_area, &border);
5749
5750                 if (gdk_rectangle_point_in (&page_area, start))
5751                         point = start;
5752                 else
5753                         point = stop;
5754
5755                 if (i == first)
5756                         view_point_to_doc_point (view, point, &page_area,
5757                                                  &selection->rect.x1,
5758                                                  &selection->rect.y1);
5759
5760                 /* If the selection is contained within just one page,
5761                  * make sure we don't write 'start' into both points
5762                  * in selection->rect. */
5763                 if (first == last)
5764                         point = stop;
5765
5766                 if (i == last)
5767                         view_point_to_doc_point (view, point, &page_area,
5768                                                  &selection->rect.x2,
5769                                                  &selection->rect.y2);
5770
5771                 list = g_list_append (list, selection);
5772         }
5773
5774         return list;
5775 }
5776
5777 /* This function takes the newly calculated list, and figures out which regions
5778  * have changed.  It then queues a redraw approporiately.
5779  */
5780 static void
5781 merge_selection_region (EvView *view,
5782                         GList  *new_list)
5783 {
5784         GList *old_list;
5785         GList *new_list_ptr, *old_list_ptr;
5786
5787         /* Update the selection */
5788         old_list = ev_pixbuf_cache_get_selection_list (view->pixbuf_cache);
5789         g_list_foreach (view->selection_info.selections, (GFunc)selection_free, NULL);
5790         g_list_free (view->selection_info.selections);
5791         view->selection_info.selections = new_list;
5792         ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, new_list);
5793         g_object_notify (G_OBJECT (view), "has-selection");
5794
5795         new_list_ptr = new_list;
5796         old_list_ptr = old_list;
5797
5798         while (new_list_ptr || old_list_ptr) {
5799                 EvViewSelection *old_sel, *new_sel;
5800                 int cur_page;
5801                 GdkRegion *region = NULL;
5802
5803                 new_sel = (new_list_ptr) ? (new_list_ptr->data) : NULL;
5804                 old_sel = (old_list_ptr) ? (old_list_ptr->data) : NULL;
5805
5806                 /* Assume that the lists are in order, and we run through them
5807                  * comparing them, one page at a time.  We come out with the
5808                  * first page we see. */
5809                 if (new_sel && old_sel) {
5810                         if (new_sel->page < old_sel->page) {
5811                                 new_list_ptr = new_list_ptr->next;
5812                                 old_sel = NULL;
5813                         } else if (new_sel->page > old_sel->page) {
5814                                 old_list_ptr = old_list_ptr->next;
5815                                 new_sel = NULL;
5816                         } else {
5817                                 new_list_ptr = new_list_ptr->next;
5818                                 old_list_ptr = old_list_ptr->next;
5819                         }
5820                 } else if (new_sel) {
5821                         new_list_ptr = new_list_ptr->next;
5822                 } else if (old_sel) {
5823                         old_list_ptr = old_list_ptr->next;
5824                 }
5825
5826                 g_assert (new_sel || old_sel);
5827
5828                 /* is the page we're looking at on the screen?*/
5829                 cur_page = new_sel ? new_sel->page : old_sel->page;
5830                 if (cur_page < view->start_page || cur_page > view->end_page)
5831                         continue;
5832
5833                 /* seed the cache with a new page.  We are going to need the new
5834                  * region too. */
5835                 if (new_sel) {
5836                         GdkRegion *tmp_region = NULL;
5837
5838                         ev_pixbuf_cache_get_selection_surface (view->pixbuf_cache,
5839                                                                cur_page,
5840                                                                view->scale,
5841                                                                &tmp_region);
5842
5843                         if (tmp_region) {
5844                                 new_sel->covered_region = gdk_region_copy (tmp_region);
5845                         }
5846                 }
5847
5848                 /* Now we figure out what needs redrawing */
5849                 if (old_sel && new_sel) {
5850                         if (old_sel->covered_region && new_sel->covered_region) {
5851                                 /* We only want to redraw the areas that have
5852                                  * changed, so we xor the old and new regions
5853                                  * and redraw if it's different */
5854                                 region = gdk_region_copy (old_sel->covered_region);
5855                                 gdk_region_xor (region, new_sel->covered_region);
5856                                 if (gdk_region_empty (region)) {
5857                                         gdk_region_destroy (region);
5858                                         region = NULL;
5859                                 }
5860                         } else if (old_sel->covered_region) {
5861                                 region = gdk_region_copy (old_sel->covered_region);
5862                         } else if (new_sel->covered_region) {
5863                                 region = gdk_region_copy (new_sel->covered_region);
5864                         }
5865                 } else if (old_sel && !new_sel) {
5866                         if (old_sel->covered_region && !gdk_region_empty (old_sel->covered_region)) {
5867                                 region = gdk_region_copy (old_sel->covered_region);
5868                         }
5869                 } else if (!old_sel && new_sel) {
5870                         if (new_sel->covered_region && !gdk_region_empty (new_sel->covered_region)) {
5871                                 region = gdk_region_copy (new_sel->covered_region);
5872                         }
5873                 } else {
5874                         g_assert_not_reached ();
5875                 }
5876
5877                 /* Redraw the damaged region! */
5878                 if (region) {
5879                         GdkRectangle page_area;
5880                         GtkBorder border;
5881
5882                         /* I don't know why but the region is smaller
5883                          * than expected. This hack fixes it, I guess
5884                          * 10 pixels more won't hurt
5885                          */
5886                         gdk_region_shrink (region, -5, -5);
5887
5888                         get_page_extents (view, cur_page, &page_area, &border);
5889                         gdk_region_offset (region,
5890                                            page_area.x + border.left - view->scroll_x,
5891                                            page_area.y + border.top - view->scroll_y);
5892                         gdk_window_invalidate_region (view->layout.bin_window, region, TRUE);
5893                         gdk_region_destroy (region);
5894                 }
5895         }
5896
5897         /* Free the old list, now that we're done with it. */
5898         g_list_foreach (old_list, (GFunc) selection_free, NULL);
5899         g_list_free (old_list);
5900 }
5901
5902 static void
5903 compute_selections (EvView          *view,
5904                     EvSelectionStyle style,
5905                     GdkPoint        *start,
5906                     GdkPoint        *stop)
5907 {
5908         GList *list;
5909
5910         if (view->selection_mode == EV_VIEW_SELECTION_RECTANGLE)
5911                 list = compute_new_selection_rect (view, start, stop);
5912         else
5913                 list = compute_new_selection_text (view, style, start, stop);
5914         merge_selection_region (view, list);
5915 }
5916
5917 /* Free's the selection.  It's up to the caller to queue redraws if needed.
5918  */
5919 static void
5920 selection_free (EvViewSelection *selection)
5921 {
5922         if (selection->covered_region)
5923                 gdk_region_destroy (selection->covered_region);
5924         g_free (selection);
5925 }
5926
5927 static void
5928 clear_selection (EvView *view)
5929 {
5930         g_list_foreach (view->selection_info.selections, (GFunc)selection_free, NULL);
5931         g_list_free (view->selection_info.selections);
5932         view->selection_info.selections = NULL;
5933         view->selection_info.in_selection = FALSE;
5934         if (view->pixbuf_cache)
5935                 ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, NULL);
5936         g_object_notify (G_OBJECT (view), "has-selection");
5937 }
5938
5939 void
5940 ev_view_select_all (EvView *view)
5941 {
5942         GList *selections = NULL;
5943         int n_pages, i;
5944
5945         /* Disable selection on rotated pages for the 0.4.0 series */
5946         if (view->rotation != 0)
5947                 return;
5948
5949         clear_selection (view);
5950
5951         n_pages = ev_document_get_n_pages (view->document);
5952         for (i = 0; i < n_pages; i++) {
5953                 gdouble width, height;
5954                 EvViewSelection *selection;
5955
5956                 get_doc_page_size (view, i, &width, &height);
5957
5958                 selection = g_new0 (EvViewSelection, 1);
5959                 selection->page = i;
5960                 selection->style = EV_SELECTION_STYLE_GLYPH;
5961                 selection->rect.x1 = selection->rect.y1 = 0;
5962                 selection->rect.x2 = width;
5963                 selection->rect.y2 = height;
5964
5965                 selections = g_list_append (selections, selection);
5966         }
5967
5968         merge_selection_region (view, selections);
5969         gtk_widget_queue_draw (GTK_WIDGET (view));
5970 }
5971
5972 gboolean
5973 ev_view_get_has_selection (EvView *view)
5974 {
5975         return view->selection_info.selections != NULL;
5976 }
5977
5978 static char *
5979 get_selected_text (EvView *view)
5980 {
5981         GString *text;
5982         GList *l;
5983         gchar *normalized_text;
5984         EvRenderContext *rc;
5985
5986         text = g_string_new (NULL);
5987         rc = ev_render_context_new (NULL, view->rotation, view->scale);
5988
5989         ev_document_doc_mutex_lock ();
5990
5991         for (l = view->selection_info.selections; l != NULL; l = l->next) {
5992                 EvViewSelection *selection = (EvViewSelection *)l->data;
5993                 EvPage *page;
5994                 gchar *tmp;
5995
5996                 page = ev_document_get_page (view->document, selection->page);
5997                 ev_render_context_set_page (rc, page);
5998                 g_object_unref (page);
5999
6000                 tmp = ev_selection_get_selected_text (EV_SELECTION (view->document),
6001                                                       rc, selection->style,
6002                                                       &(selection->rect));
6003
6004                 g_string_append (text, tmp);
6005                 g_free (tmp);
6006         }
6007
6008         g_object_unref (rc);
6009
6010         ev_document_doc_mutex_unlock ();
6011
6012         normalized_text = g_utf8_normalize (text->str, text->len, G_NORMALIZE_NFKC);
6013         g_string_free (text, TRUE);
6014         return normalized_text;
6015 }
6016
6017 static void
6018 ev_view_clipboard_copy (EvView      *view,
6019                         const gchar *text)
6020 {
6021         GtkClipboard *clipboard;
6022
6023         clipboard = gtk_widget_get_clipboard (GTK_WIDGET (view),
6024                                               GDK_SELECTION_CLIPBOARD);
6025         gtk_clipboard_set_text (clipboard, text, -1);
6026 }
6027
6028 void
6029 ev_view_copy (EvView *ev_view)
6030 {
6031         char *text;
6032
6033         if (!EV_IS_SELECTION (ev_view->document))
6034                 return;
6035
6036         text = get_selected_text (ev_view);
6037         ev_view_clipboard_copy (ev_view, text);
6038         g_free (text);
6039 }
6040
6041 static void
6042 ev_view_primary_get_cb (GtkClipboard     *clipboard,
6043                         GtkSelectionData *selection_data,
6044                         guint             info,
6045                         gpointer          data)
6046 {
6047         EvView *ev_view = EV_VIEW (data);
6048
6049         if (ev_view->link_selected) {
6050                 gtk_selection_data_set_text (selection_data,
6051                                              ev_link_action_get_uri (ev_view->link_selected),
6052                                              -1);
6053         } else if (EV_IS_SELECTION (ev_view->document) &&
6054                    ev_view->selection_info.selections) {
6055                 gchar *text;
6056
6057                 text = get_selected_text (ev_view);
6058                 if (text) {
6059                         gtk_selection_data_set_text (selection_data, text, -1);
6060                         g_free (text);
6061                 }
6062         }
6063 }
6064
6065 static void
6066 ev_view_primary_clear_cb (GtkClipboard *clipboard,
6067                           gpointer      data)
6068 {
6069         EvView *view = EV_VIEW (data);
6070
6071         clear_selection (view);
6072         clear_link_selected (view);
6073 }
6074
6075 static void
6076 ev_view_update_primary_selection (EvView *ev_view)
6077 {
6078         GtkClipboard *clipboard;
6079
6080         clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view),
6081                                               GDK_SELECTION_PRIMARY);
6082
6083         if (ev_view->selection_info.selections || ev_view->link_selected) {
6084                 GtkTargetList *target_list;
6085                 GtkTargetEntry *targets;
6086                 int n_targets;
6087
6088                 target_list = gtk_target_list_new (NULL, 0);
6089                 gtk_target_list_add_text_targets (target_list, 0);
6090                 targets = gtk_target_table_new_from_list (target_list, &n_targets);
6091                 gtk_target_list_unref (target_list);
6092
6093                 if (!gtk_clipboard_set_with_owner (clipboard,
6094                                                    targets, n_targets,
6095                                                    ev_view_primary_get_cb,
6096                                                    ev_view_primary_clear_cb,
6097                                                    G_OBJECT (ev_view)))
6098                         ev_view_primary_clear_cb (clipboard, ev_view);
6099
6100                 gtk_target_table_free (targets, n_targets);
6101         } else {
6102                 if (gtk_clipboard_get_owner (clipboard) == G_OBJECT (ev_view))
6103                         gtk_clipboard_clear (clipboard);
6104         }
6105 }
6106
6107 static void
6108 clear_link_selected (EvView *view)
6109 {
6110         if (view->link_selected) {
6111                 g_object_unref (view->link_selected);
6112                 view->link_selected = NULL;
6113         }
6114 }
6115
6116 void
6117 ev_view_copy_link_address (EvView       *view,
6118                            EvLinkAction *action)
6119 {
6120         clear_link_selected (view);
6121
6122         ev_view_clipboard_copy (view, ev_link_action_get_uri (action));
6123
6124         view->link_selected = g_object_ref (action);
6125         ev_view_update_primary_selection (view);
6126 }
6127
6128 /*** Cursor operations ***/
6129
6130 static GdkCursor *
6131 ev_view_create_invisible_cursor(void)
6132 {
6133        GdkBitmap *empty;
6134        GdkColor black = { 0, 0, 0, 0 };
6135        static char bits[] = { 0x00 };
6136
6137        empty = gdk_bitmap_create_from_data (NULL, bits, 1, 1);
6138
6139        return gdk_cursor_new_from_pixmap (empty, empty, &black, &black, 0, 0);
6140 }
6141
6142 static void
6143 ev_view_set_cursor (EvView *view, EvViewCursor new_cursor)
6144 {
6145         GdkCursor *cursor = NULL;
6146         GdkDisplay *display;
6147         GtkWidget *widget;
6148
6149         if (view->cursor == new_cursor) {
6150                 return;
6151         }
6152
6153         widget = gtk_widget_get_toplevel (GTK_WIDGET (view));
6154         display = gtk_widget_get_display (widget);
6155         view->cursor = new_cursor;
6156
6157         switch (new_cursor) {
6158                 case EV_VIEW_CURSOR_NORMAL:
6159                         gdk_window_set_cursor (view->layout.bin_window, NULL);
6160                         break;
6161                 case EV_VIEW_CURSOR_IBEAM:
6162                         cursor = gdk_cursor_new_for_display (display, GDK_XTERM);
6163                         break;
6164                 case EV_VIEW_CURSOR_LINK:
6165                         cursor = gdk_cursor_new_for_display (display, GDK_HAND2);
6166                         break;
6167                 case EV_VIEW_CURSOR_WAIT:
6168                         cursor = gdk_cursor_new_for_display (display, GDK_WATCH);
6169                         break;
6170                 case EV_VIEW_CURSOR_HIDDEN:
6171                         cursor = ev_view_create_invisible_cursor ();
6172                         break;
6173                 case EV_VIEW_CURSOR_DRAG:
6174                         cursor = gdk_cursor_new_for_display (display, GDK_FLEUR);
6175                         break;
6176                 case EV_VIEW_CURSOR_AUTOSCROLL:
6177                         cursor = gdk_cursor_new_for_display (display, GDK_DOUBLE_ARROW);
6178                         break;
6179         }
6180
6181         if (cursor) {
6182                 gdk_window_set_cursor (view->layout.bin_window, cursor);
6183                 gdk_cursor_unref (cursor);
6184                 gdk_flush();
6185         }
6186 }
6187
6188 void
6189 ev_view_hide_cursor (EvView *view)
6190 {
6191        ev_view_set_cursor (view, EV_VIEW_CURSOR_HIDDEN);
6192 }
6193
6194 void
6195 ev_view_show_cursor (EvView *view)
6196 {
6197        ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
6198 }
6199
6200 static void
6201 ev_view_reset_presentation_state (EvView *view)
6202 {
6203         if (!view->presentation ||
6204             view->presentation_state == EV_PRESENTATION_NORMAL)
6205                 return;
6206
6207         view->presentation_state = EV_PRESENTATION_NORMAL;
6208         gdk_window_set_background (view->layout.bin_window,
6209                                    &GTK_WIDGET (view)->style->black);
6210         gtk_widget_queue_draw (GTK_WIDGET (view));
6211 }
6212
6213 gboolean
6214 ev_view_next_page (EvView *view)
6215 {
6216         int page, n_pages;
6217
6218         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
6219
6220         if (!view->page_cache)
6221                 return FALSE;
6222
6223         if (view->presentation &&
6224             (view->presentation_state == EV_PRESENTATION_BLACK ||
6225              view->presentation_state == EV_PRESENTATION_WHITE)) {
6226                 ev_view_reset_presentation_state (view);
6227                 return FALSE;
6228         }
6229
6230         if (view->animation) {
6231                 ev_view_transition_animation_cancel (view->animation, view);
6232         }
6233
6234         ev_view_presentation_transition_stop (view);
6235         ev_view_reset_presentation_state (view);
6236
6237         page = ev_page_cache_get_current_page (view->page_cache);
6238         n_pages = ev_document_get_n_pages (view->document);
6239
6240         if (view->dual_page && !view->presentation)
6241                 page = page + 2;
6242         else
6243                 page = page + 1;
6244
6245         if (page < n_pages) {
6246                 ev_page_cache_set_current_page (view->page_cache, page);
6247                 return TRUE;
6248         } else if (view->presentation && page == n_pages) {
6249                 view->presentation_state = EV_PRESENTATION_END;
6250                 gtk_widget_queue_draw (GTK_WIDGET (view));
6251                 return TRUE;
6252         } else if (view->dual_page && page == n_pages) {
6253                 ev_page_cache_set_current_page (view->page_cache, page - 1);
6254                 return TRUE;
6255         } else {
6256                 return FALSE;
6257         }
6258 }
6259
6260 gboolean
6261 ev_view_previous_page (EvView *view)
6262 {
6263         int page;
6264
6265         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
6266
6267         if (!view->page_cache)
6268                 return FALSE;
6269
6270         if (view->presentation &&
6271             view->presentation_state == EV_PRESENTATION_END) {
6272                 ev_view_reset_presentation_state (view);
6273                 return TRUE;
6274         }
6275
6276         if (view->presentation &&
6277             (view->presentation_state == EV_PRESENTATION_BLACK ||
6278              view->presentation_state == EV_PRESENTATION_WHITE)) {
6279                 ev_view_reset_presentation_state (view);
6280                 return FALSE;
6281         }
6282
6283         if (view->animation) {
6284                 ev_view_transition_animation_cancel (view->animation, view);
6285         }
6286
6287         ev_view_reset_presentation_state (view);
6288
6289         page = ev_page_cache_get_current_page (view->page_cache);
6290
6291         if (view->dual_page && !view->presentation)
6292                 page = page - 2;
6293         else
6294                 page = page - 1;
6295
6296         if (page >= 0) {
6297                 ev_page_cache_set_current_page (view->page_cache, page);
6298                 return TRUE;
6299         } else if (ev_view_get_dual_page (view) && page == -1) {
6300                 ev_page_cache_set_current_page (view->page_cache, 0);
6301                 return TRUE;
6302         } else {
6303                 return FALSE;
6304         }
6305 }
6306