libview/ev-view.c

   1 /* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8; c-indent-level: 8 -*- */
   2 /* this file is part of evince, a gnome document viewer
   3  *
   4  *  Copyright (C) 2004 Red Hat, Inc
   5  *
   6  * Evince is free software; you can redistribute it and/or modify it
   7  * under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * Evince is distributed in the hope that it will be useful, but
  12  * WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
  19  */
  20
  21 #include "config.h"
  22
  23 #include <stdlib.h>
  24 #include <math.h>
  25 #include <string.h>
  26
  27 #include <glib/gi18n-lib.h>
  28 #include <gtk/gtk.h>
  29 #include <gdk/gdkkeysyms.h>
  30
  31 #include "ev-mapping.h"
  32 #include "ev-document-forms.h"
  33 #include "ev-document-images.h"
  34 #include "ev-document-links.h"
  35 #include "ev-document-misc.h"
  36 #include "ev-document-transition.h"
  37 #include "ev-page-cache.h"
  38 #include "ev-pixbuf-cache.h"
  39 #include "ev-transition-animation.h"
  40 #include "ev-view-marshal.h"
  41 #include "ev-document-annotations.h"
  42 #include "ev-annotation-window.h"
  43 #include "ev-view.h"
  44 #include "ev-view-accessible.h"
  45 #include "ev-view-private.h"
  46 #include "ev-view-type-builtins.h"
  47
  48 #define EV_VIEW_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass), EV_TYPE_VIEW, EvViewClass))
  49 #define EV_IS_VIEW_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), EV_TYPE_VIEW))
  50 #define EV_VIEW_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj), EV_TYPE_VIEW, EvViewClass))
  51
  52 enum {
  53         PROP_0,
  54         PROP_CONTINUOUS,
  55         PROP_DUAL_PAGE,
  56         PROP_FULLSCREEN,
  57         PROP_PRESENTATION,
  58         PROP_SIZING_MODE,
  59         PROP_ZOOM,
  60         PROP_ROTATION,
  61         PROP_HAS_SELECTION,
  62 };
  63
  64 enum {
  65         SIGNAL_BINDING_ACTIVATED,
  66         SIGNAL_ZOOM_INVALID,
  67         SIGNAL_HANDLE_LINK,
  68         SIGNAL_EXTERNAL_LINK,
  69         SIGNAL_POPUP_MENU,
  70         N_SIGNALS,
  71 };
  72
  73 enum {
  74         TARGET_DND_URI,
  75         TARGET_DND_TEXT,
  76         TARGET_DND_IMAGE
  77 };
  78
  79 static guint signals[N_SIGNALS];
  80
  81 typedef enum {
  82         EV_VIEW_FIND_NEXT,
  83         EV_VIEW_FIND_PREV
  84 } EvViewFindDirection;
  85
  86 #define ZOOM_IN_FACTOR  1.2
  87 #define ZOOM_OUT_FACTOR (1.0/ZOOM_IN_FACTOR)
  88
  89 #define MIN_SCALE 0.05409
  90 #define MAX_SCALE 4.0
  91
  92 #define SCROLL_TIME 150
  93
  94 /*** Scrolling ***/
  95 static void       scroll_to_current_page                     (EvView *view,
  96                                                               GtkOrientation orientation);
  97 static void       ev_view_set_scroll_adjustments             (GtkLayout          *layout,
  98                                                               GtkAdjustment      *hadjustment,
  99                                                               GtkAdjustment      *vadjustment);
 100 static void       view_update_range_and_current_page         (EvView             *view);
 101 static void       set_scroll_adjustment                      (EvView             *view,
 102                                                               GtkOrientation      orientation,
 103                                                               GtkAdjustment      *adjustment);
 104 static void       add_scroll_binding_keypad                  (GtkBindingSet      *binding_set,
 105                                                               guint               keyval,
 106                                                               GdkModifierType modifiers,
 107                                                               GtkScrollType       scroll,
 108                                                               gboolean            horizontal);
 109 static void       ensure_rectangle_is_visible                (EvView             *view,
 110                                                               GdkRectangle       *rect);
 111
 112 /*** Geometry computations ***/
 113 static void       compute_border                             (EvView             *view,
 114                                                               int                 width,
 115                                                               int                 height,
 116                                                               GtkBorder          *border);
 117 static void       get_page_y_offset                          (EvView *view,
 118                                                               int page,
 119                                                               double zoom,
 120                                                               int *y_offset);
 121 static gboolean   get_page_extents                           (EvView             *view,
 122                                                               gint                page,
 123                                                               GdkRectangle       *page_area,
 124                                                               GtkBorder          *border);
 125 static void       view_rect_to_doc_rect                      (EvView             *view,
 126                                                               GdkRectangle       *view_rect,
 127                                                               GdkRectangle       *page_area,
 128                                                               EvRectangle        *doc_rect);
 129 static void       doc_rect_to_view_rect                      (EvView             *view,
 130                                                               int                 page,
 131                                                               EvRectangle        *doc_rect,
 132                                                               GdkRectangle       *view_rect);
 133 static void       find_page_at_location                      (EvView             *view,
 134                                                               gdouble             x,
 135                                                               gdouble             y,
 136                                                               gint               *page,
 137                                                               gint               *x_offset,
 138                                                               gint               *y_offset);
 139 static gboolean  doc_point_to_view_point                     (EvView             *view,
 140                                                               int                 page,
 141                                                               EvPoint            *doc_point,
 142                                                               GdkPoint           *view_point);
 143 /*** Hyperrefs ***/
 144 static EvLink *   ev_view_get_link_at_location               (EvView             *view,
 145                                                               gdouble             x,
 146                                                               gdouble             y);
 147 static char*      tip_from_link                              (EvView             *view,
 148                                                               EvLink             *link);
 149 /*** Forms ***/
 150 static EvFormField *ev_view_get_form_field_at_location       (EvView             *view,
 151                                                                gdouble            x,
 152                                                                gdouble            y);
 153
 154 /*** Annotations ***/
 155 static EvAnnotation *ev_view_get_annotation_at_location      (EvView             *view,
 156                                                               gdouble             x,
 157                                                               gdouble             y);
 158 static void          show_annotation_windows                 (EvView             *view,
 159                                                               gint                page);
 160 static void          hide_annotation_windows                 (EvView             *view,
 161                                                               gint                page);
 162 /*** GtkWidget implementation ***/
 163 static void       ev_view_size_request_continuous_dual_page  (EvView             *view,
 164                                                               GtkRequisition     *requisition);
 165 static void       ev_view_size_request_continuous            (EvView             *view,
 166                                                               GtkRequisition     *requisition);
 167 static void       ev_view_size_request_dual_page             (EvView             *view,
 168                                                               GtkRequisition     *requisition);
 169 static void       ev_view_size_request_single_page           (EvView             *view,
 170                                                               GtkRequisition     *requisition);
 171 static void       ev_view_size_request                       (GtkWidget          *widget,
 172                                                               GtkRequisition     *requisition);
 173 static void       ev_view_size_allocate                      (GtkWidget          *widget,
 174                                                               GtkAllocation      *allocation);
 175 static void       ev_view_realize                            (GtkWidget          *widget);
 176 static gboolean   ev_view_scroll_event                       (GtkWidget          *widget,
 177                                                               GdkEventScroll     *event);
 178 static gboolean   ev_view_expose_event                       (GtkWidget          *widget,
 179                                                               GdkEventExpose     *event);
 180 static gboolean   ev_view_popup_menu                         (GtkWidget          *widget);
 181 static gboolean   ev_view_button_press_event                 (GtkWidget          *widget,
 182                                                               GdkEventButton     *event);
 183 static gboolean   ev_view_motion_notify_event                (GtkWidget          *widget,
 184                                                               GdkEventMotion     *event);
 185 static gboolean   ev_view_button_release_event               (GtkWidget          *widget,
 186                                                               GdkEventButton     *event);
 187 static gboolean   ev_view_enter_notify_event                 (GtkWidget          *widget,
 188                                                               GdkEventCrossing   *event);
 189 static gboolean   ev_view_leave_notify_event                 (GtkWidget          *widget,
 190                                                               GdkEventCrossing   *event);
 191 static void       ev_view_style_set                          (GtkWidget          *widget,
 192                                                               GtkStyle           *old_style);
 193 static void       ev_view_remove_all                         (EvView             *view);
 194
 195 static AtkObject *ev_view_get_accessible                     (GtkWidget *widget);
 196
 197 /*** Drawing ***/
 198 static guint32    ev_gdk_color_to_rgb                        (const GdkColor     *color);
 199 static void       draw_rubberband                            (GtkWidget          *widget,
 200                                                               GdkWindow          *window,
 201                                                               const GdkRectangle *rect,
 202                                                               guchar              alpha);
 203 static void       highlight_find_results                     (EvView             *view,
 204                                                               int                 page);
 205 static void       draw_one_page                              (EvView             *view,
 206                                                               gint                page,
 207                                                               cairo_t            *cr,
 208                                                               GdkRectangle       *page_area,
 209                                                               GtkBorder          *border,
 210                                                               GdkRectangle       *expose_area,
 211                                                               gboolean           *page_ready);
 212 static void       draw_loading_text                          (EvView             *view,
 213                                                               GdkRectangle       *page_area,
 214                                                               GdkRectangle       *expose_area);
 215 static void       ev_view_reload_page                        (EvView             *view,
 216                                                               gint                page,
 217                                                               GdkRegion          *region);
 218
 219 /*** Callbacks ***/
 220 static void       job_finished_cb                            (EvPixbufCache      *pixbuf_cache,
 221                                                               GdkRegion          *region,
 222                                                               EvView             *view);
 223 static void       page_changed_cb                            (EvPageCache        *page_cache,
 224                                                               int                 new_page,
 225                                                               EvView             *view);
 226 static void       on_adjustment_value_changed                (GtkAdjustment      *adjustment,
 227                                                               EvView             *view);
 228
 229 /*** GObject ***/
 230 static void       ev_view_finalize                           (GObject            *object);
 231 static void       ev_view_destroy                            (GtkObject          *object);
 232 static void       ev_view_set_property                       (GObject            *object,
 233                                                               guint               prop_id,
 234                                                               const GValue       *value,
 235                                                               GParamSpec         *pspec);
 236 static void       ev_view_get_property                       (GObject            *object,
 237                                                               guint               prop_id,
 238                                                               GValue             *value,
 239                                                               GParamSpec         *pspec);
 240 static void       ev_view_class_init                         (EvViewClass        *class);
 241 static void       ev_view_init                               (EvView             *view);
 242
 243 /*** Zoom and sizing ***/
 244 static double   zoom_for_size_fit_width                      (int doc_width,
 245                                                               int doc_height,
 246                                                               int target_width,
 247                                                               int target_height,
 248                                                               int vsb_width);
 249 static double   zoom_for_size_fit_height                     (int doc_width,
 250                                                               int doc_height,
 251                                                               int target_width,
 252                                                               int target_height,
 253                                                               int vsb_height);
 254 static double   zoom_for_size_best_fit                       (int doc_width,
 255                                                               int doc_height,
 256                                                               int target_width,
 257                                                               int target_height,
 258                                                               int vsb_width,
 259                                                               int hsb_width);
 260 static void     ev_view_zoom_for_size_presentation           (EvView *view,
 261                                                               int     width,
 262                                                               int     height);
 263 static void     ev_view_zoom_for_size_continuous_and_dual_page (EvView *view,
 264                                                                 int     width,
 265                                                                 int     height,
 266                                                                 int     vsb_width,
 267                                                                 int     hsb_height);
 268 static void     ev_view_zoom_for_size_continuous               (EvView *view,
 269                                                                 int     width,
 270                                                                 int     height,
 271                                                                 int     vsb_width,
 272                                                                 int     hsb_height);
 273 static void     ev_view_zoom_for_size_dual_page                (EvView *view,
 274                                                                 int     width,
 275                                                                 int     height,
 276                                                                 int     vsb_width,
 277                                                                 int     hsb_height);
 278 static void     ev_view_zoom_for_size_single_page              (EvView *view,
 279                                                                 int     width,
 280                                                                 int     height,
 281                                                                 int     vsb_width,
 282                                                                 int     hsb_height);
 283 /*** Cursors ***/
 284 static GdkCursor* ev_view_create_invisible_cursor            (void);
 285 static void       ev_view_set_cursor                         (EvView             *view,
 286                                                               EvViewCursor        new_cursor);
 287 static void       ev_view_handle_cursor_over_xy              (EvView *view,
 288                                                               gint x,
 289                                                               gint y);
 290
 291 /*** Find ***/
 292 static gint         ev_view_find_get_n_results               (EvView             *view,
 293                                                               gint                page);
 294 static EvRectangle *ev_view_find_get_result                  (EvView             *view,
 295                                                               gint                page,
 296                                                               gint                result);
 297 static void       jump_to_find_result                        (EvView             *view);
 298 static void       jump_to_find_page                          (EvView             *view,
 299                                                               EvViewFindDirection direction,
 300                                                               gint                shift);
 301
 302 /*** Selection ***/
 303 static void       compute_selections                         (EvView             *view,
 304                                                               EvSelectionStyle    style,
 305                                                               GdkPoint           *start,
 306                                                               GdkPoint           *stop);
 307 static void       clear_selection                            (EvView             *view);
 308 static void       clear_link_selected                        (EvView             *view);
 309 static void       selection_free                             (EvViewSelection    *selection);
 310 static char*      get_selected_text                          (EvView             *ev_view);
 311 static void       ev_view_primary_get_cb                     (GtkClipboard       *clipboard,
 312                                                               GtkSelectionData   *selection_data,
 313                                                               guint               info,
 314                                                               gpointer            data);
 315 static void       ev_view_primary_clear_cb                   (GtkClipboard       *clipboard,
 316                                                               gpointer            data);
 317 static void       ev_view_update_primary_selection           (EvView             *ev_view);
 318
 319 /*** Presentation ***/
 320 static void       ev_view_presentation_transition_start      (EvView             *ev_view);
 321 static void       ev_view_presentation_transition_stop       (EvView             *ev_view);
 322
 323
 324 G_DEFINE_TYPE (EvView, ev_view, GTK_TYPE_LAYOUT)
 325
 326 static void
 327 scroll_to_current_page (EvView *view, GtkOrientation orientation)
 328 {
 329         GdkPoint view_point;
 330
 331         if (view->document == NULL) {
 332                 return;
 333         }
 334
 335         doc_point_to_view_point (view, view->current_page, &view->pending_point, &view_point);
 336
 337         if (orientation == GTK_ORIENTATION_VERTICAL) {
 338                 view->pending_point.y = 0;
 339         } else {
 340                 view->pending_point.x = 0;
 341         }
 342
 343         if (orientation == GTK_ORIENTATION_VERTICAL) {
 344                 if (view->continuous) {
 345                         gtk_adjustment_clamp_page (view->vadjustment,
 346                                                    view_point.y - view->spacing / 2,
 347                                                    view_point.y + view->vadjustment->page_size);
 348                 } else {
 349                         gtk_adjustment_set_value (view->vadjustment,
 350                                                   CLAMP (view_point.y,
 351                                                   view->vadjustment->lower,
 352                                                   view->vadjustment->upper -
 353                                                   view->vadjustment->page_size));
 354                 }
 355         } else {
 356                 if (view->dual_page) {
 357                         gtk_adjustment_clamp_page (view->hadjustment,
 358                                                    view_point.x,
 359                                                    view_point.x + view->hadjustment->page_size);
 360                 } else {
 361                         gtk_adjustment_set_value (view->hadjustment,
 362                                                   CLAMP (view_point.x,
 363                                                   view->hadjustment->lower,
 364                                                   view->hadjustment->upper -
 365                                                   view->hadjustment->page_size));
 366                 }
 367         }
 368 }
 369
 370 static void
 371 view_set_adjustment_values (EvView         *view,
 372                             GtkOrientation  orientation)
 373 {
 374         GtkWidget *widget = GTK_WIDGET (view);
 375         GtkAdjustment *adjustment;
 376         int requisition;
 377         int allocation;
 378
 379         double factor;
 380         gint new_value;
 381
 382         if (orientation == GTK_ORIENTATION_HORIZONTAL)  {
 383                 requisition = widget->requisition.width;
 384                 allocation = widget->allocation.width;
 385                 adjustment = view->hadjustment;
 386         } else {
 387                 requisition = widget->requisition.height;
 388                 allocation = widget->allocation.height;
 389                 adjustment = view->vadjustment;
 390         }
 391
 392         if (!adjustment)
 393                 return;
 394
 395         factor = 1.0;
 396         switch (view->pending_scroll) {
 397                 case SCROLL_TO_KEEP_POSITION:
 398                 case SCROLL_TO_FIND_LOCATION:
 399                         factor = (adjustment->value) / adjustment->upper;
 400                         break;
 401                 case SCROLL_TO_PAGE_POSITION:
 402                         break;
 403                 case SCROLL_TO_CENTER:
 404                         factor = (adjustment->value + adjustment->page_size * 0.5) / adjustment->upper;
 405                         break;
 406         }
 407
 408         adjustment->page_size = allocation;
 409         adjustment->step_increment = allocation * 0.1;
 410         adjustment->page_increment = allocation * 0.9;
 411         adjustment->lower = 0;
 412         adjustment->upper = MAX (allocation, requisition);
 413
 414         /*
 415          * We add 0.5 to the values before to average out our rounding errors.
 416          */
 417         switch (view->pending_scroll) {
 418                 case SCROLL_TO_KEEP_POSITION:
 419                 case SCROLL_TO_FIND_LOCATION:
 420                         new_value = CLAMP (adjustment->upper * factor + 0.5, 0, adjustment->upper - adjustment->page_size);
 421                         gtk_adjustment_set_value (adjustment, (int)new_value);
 422                         break;
 423                 case SCROLL_TO_PAGE_POSITION:
 424                         scroll_to_current_page (view, orientation);
 425                         break;
 426                 case SCROLL_TO_CENTER:
 427                         new_value = CLAMP (adjustment->upper * factor - adjustment->page_size * 0.5 + 0.5,
 428                                            0, adjustment->upper - adjustment->page_size);
 429                         gtk_adjustment_set_value (adjustment, (int)new_value);
 430                         break;
 431         }
 432
 433         gtk_adjustment_changed (adjustment);
 434 }
 435
 436 static void
 437 view_update_range_and_current_page (EvView *view)
 438 {
 439         gint current_page;
 440         gint best_current_page = -1;
 441         gint start = view->start_page;
 442         gint end = view->end_page;
 443
 444         /* Presentation trumps all other modes */
 445         if (view->presentation) {
 446                 view->start_page = view->current_page;
 447                 view->end_page = view->current_page;
 448         } else if (view->continuous) {
 449                 GdkRectangle current_area, unused, page_area;
 450                 GtkBorder border;
 451                 gboolean found = FALSE;
 452                 gint area_max = -1, area;
 453                 int i;
 454
 455                 if (!(view->vadjustment && view->hadjustment))
 456                         return;
 457
 458                 current_area.x = view->hadjustment->value;
 459                 current_area.width = view->hadjustment->upper;
 460                 current_area.y = view->vadjustment->value;
 461                 current_area.height = view->vadjustment->page_size;
 462
 463                 for (i = 0; i < ev_page_cache_get_n_pages (view->page_cache); i++) {
 464
 465                         get_page_extents (view, i, &page_area, &border);
 466
 467                         if (gdk_rectangle_intersect (&current_area, &page_area, &unused)) {
 468                                 area = unused.width * unused.height;
 469
 470                                 if (!found) {
 471                                         area_max = area;
 472                                         view->start_page = i;
 473                                         found = TRUE;
 474                                         best_current_page = i;
 475                                 }
 476                                 if (area > area_max) {
 477                                         best_current_page = (area == area_max) ? MIN (i, best_current_page) : i;
 478                                         area_max = area;
 479                                 }
 480
 481                                 view->end_page = i;
 482                         } else if (found && view->current_page <= view->end_page) {
 483                                 break;
 484                         }
 485                 }
 486
 487         } else if (view->dual_page) {
 488                 if (view->current_page % 2 == ev_page_cache_get_dual_even_left (view->page_cache)) {
 489                         view->start_page = view->current_page;
 490                         if (view->current_page + 1 < ev_page_cache_get_n_pages (view->page_cache))
 491                                 view->end_page = view->start_page + 1;
 492                         else
 493                                 view->end_page = view->start_page;
 494                 } else {
 495                         if (view->current_page < 1)
 496                                 view->start_page = view->current_page;
 497                         else
 498                                 view->start_page = view->current_page - 1;
 499                         view->end_page = view->current_page;
 500                 }
 501         } else {
 502                 view->start_page = view->current_page;
 503                 view->end_page = view->current_page;
 504         }
 505
 506         best_current_page = MAX (best_current_page, view->start_page);
 507         current_page = ev_page_cache_get_current_page (view->page_cache);
 508
 509         if ((current_page != best_current_page) && (view->pending_scroll == SCROLL_TO_KEEP_POSITION)) {
 510                 view->current_page = best_current_page;
 511                 ev_page_cache_set_current_page (view->page_cache, best_current_page);
 512         }
 513
 514         if (start != view->start_page || end != view->end_page) {
 515                 gint i;
 516
 517                 for (i = start; i < view->start_page; i++) {
 518                         hide_annotation_windows (view, i);
 519                 }
 520
 521                 for (i = end; i > view->end_page; i--) {
 522                         hide_annotation_windows (view, i);
 523                 }
 524         }
 525
 526         ev_pixbuf_cache_set_page_range (view->pixbuf_cache,
 527                                         view->start_page,
 528                                         view->end_page,
 529                                         view->rotation,
 530                                         view->scale,
 531                                         view->selection_info.selections);
 532 }
 533
 534 static void
 535 set_scroll_adjustment (EvView *view,
 536                        GtkOrientation  orientation,
 537                        GtkAdjustment  *adjustment)
 538 {
 539         GtkAdjustment **to_set;
 540
 541         if (orientation == GTK_ORIENTATION_HORIZONTAL)
 542                 to_set = &view->hadjustment;
 543         else
 544                 to_set = &view->vadjustment;
 545
 546         if (*to_set != adjustment) {
 547                 if (*to_set) {
 548                         g_signal_handlers_disconnect_by_func (*to_set,
 549                                                               (gpointer) on_adjustment_value_changed,
 550                                                               view);
 551                         g_object_unref (*to_set);
 552                 }
 553
 554                 *to_set = adjustment;
 555                 view_set_adjustment_values (view, orientation);
 556
 557                 if (*to_set) {
 558                         g_object_ref (*to_set);
 559                         g_signal_connect (*to_set, "value_changed",
 560                                           G_CALLBACK (on_adjustment_value_changed), view);
 561                 }
 562         }
 563 }
 564
 565 static void
 566 ev_view_set_scroll_adjustments (GtkLayout      *layout,
 567                                 GtkAdjustment  *hadjustment,
 568                                 GtkAdjustment  *vadjustment)
 569 {
 570         EvView *view = EV_VIEW (layout);
 571
 572         set_scroll_adjustment (view, GTK_ORIENTATION_HORIZONTAL, hadjustment);
 573         set_scroll_adjustment (view, GTK_ORIENTATION_VERTICAL, vadjustment);
 574
 575         on_adjustment_value_changed (NULL, view);
 576 }
 577
 578 static void
 579 add_scroll_binding_keypad (GtkBindingSet  *binding_set,
 580                            guint           keyval,
 581                            GdkModifierType modifiers,
 582                            GtkScrollType   scroll,
 583                            gboolean        horizontal)
 584 {
 585   guint keypad_keyval = keyval - GDK_Left + GDK_KP_Left;
 586
 587   gtk_binding_entry_add_signal (binding_set, keyval, modifiers,
 588                                 "binding_activated", 2,
 589                                 GTK_TYPE_SCROLL_TYPE, scroll,
 590                                 G_TYPE_BOOLEAN, horizontal);
 591   gtk_binding_entry_add_signal (binding_set, keypad_keyval, modifiers,
 592                                 "binding_activated", 2,
 593                                 GTK_TYPE_SCROLL_TYPE, scroll,
 594                                 G_TYPE_BOOLEAN, horizontal);
 595 }
 596
 597 void
 598 ev_view_scroll (EvView        *view,
 599                 GtkScrollType  scroll,
 600                 gboolean       horizontal)
 601 {
 602         GtkAdjustment *adjustment;
 603         double value, increment;
 604         gboolean first_page = FALSE;
 605         gboolean last_page = FALSE;
 606
 607         view->jump_to_find_result = FALSE;
 608
 609         if (view->presentation || view->sizing_mode == EV_SIZING_BEST_FIT) {
 610                 switch (scroll) {
 611                         case GTK_SCROLL_PAGE_BACKWARD:
 612                         case GTK_SCROLL_STEP_BACKWARD:
 613                                 ev_view_previous_page (view);
 614                                 break;
 615                         case GTK_SCROLL_PAGE_FORWARD:
 616                         case GTK_SCROLL_STEP_FORWARD:
 617                                 ev_view_next_page (view);
 618                                 break;
 619                         default:
 620                                 break;
 621                 }
 622                 return;
 623         }
 624
 625         /* Assign values for increment and vertical adjustment */
 626         adjustment = horizontal ? view->hadjustment : view->vadjustment;
 627         increment = adjustment->page_size * 0.75;
 628         value = adjustment->value;
 629
 630         /* Assign boolean for first and last page */
 631         if (view->current_page == 0)
 632                 first_page = TRUE;
 633         if (view->current_page == ev_page_cache_get_n_pages (view->page_cache) - 1)
 634                 last_page = TRUE;
 635
 636         switch (scroll) {
 637                 case GTK_SCROLL_PAGE_BACKWARD:
 638                         /* Do not jump backwards if at the first page */
 639                         if (value == (adjustment->lower) && first_page) {
 640                                 /* Do nothing */
 641                                 /* At the top of a page, assign the upper bound limit of previous page */
 642                         } else if (value == (adjustment->lower)) {
 643                                 value = adjustment->upper - adjustment->page_size;
 644                                 ev_view_previous_page (view);
 645                                 /* Jump to the top */
 646                         } else {
 647                                 value = MAX (value - increment, adjustment->lower);
 648                         }
 649                         break;
 650                 case GTK_SCROLL_PAGE_FORWARD:
 651                         /* Do not jump forward if at the last page */
 652                         if (value == (adjustment->upper - adjustment->page_size) && last_page) {
 653                                 /* Do nothing */
 654                         /* At the bottom of a page, assign the lower bound limit of next page */
 655                         } else if (value == (adjustment->upper - adjustment->page_size)) {
 656                                 value = 0;
 657                                 ev_view_next_page (view);
 658                         /* Jump to the bottom */
 659                         } else {
 660                                 value = MIN (value + increment, adjustment->upper - adjustment->page_size);
 661                         }
 662                         break;
 663                 case GTK_SCROLL_STEP_BACKWARD:
 664                         value -= adjustment->step_increment;
 665                         break;
 666                 case GTK_SCROLL_STEP_FORWARD:
 667                         value += adjustment->step_increment;
 668                         break;
 669                 case GTK_SCROLL_STEP_DOWN:
 670                         value -= adjustment->step_increment / 10;
 671                         break;
 672                 case GTK_SCROLL_STEP_UP:
 673                         value += adjustment->step_increment / 10;
 674                         break;
 675                 default:
 676                         break;
 677         }
 678
 679         value = CLAMP (value, adjustment->lower,
 680                        adjustment->upper - adjustment->page_size);
 681
 682         gtk_adjustment_set_value (adjustment, value);
 683 }
 684
 685 #define MARGIN 5
 686
 687 static void
 688 ensure_rectangle_is_visible (EvView *view, GdkRectangle *rect)
 689 {
 690         GtkWidget *widget = GTK_WIDGET (view);
 691         GtkAdjustment *adjustment;
 692         int value;
 693
 694         view->pending_scroll = SCROLL_TO_FIND_LOCATION;
 695
 696         adjustment = view->vadjustment;
 697
 698         if (rect->y < adjustment->value) {
 699                 value = MAX (adjustment->lower, rect->y - MARGIN);
 700                 gtk_adjustment_set_value (view->vadjustment, value);
 701         } else if (rect->y + rect->height >
 702                    adjustment->value + widget->allocation.height) {
 703                 value = MIN (adjustment->upper, rect->y + rect->height -
 704                              widget->allocation.height + MARGIN);
 705                 gtk_adjustment_set_value (view->vadjustment, value);
 706         }
 707
 708         adjustment = view->hadjustment;
 709
 710         if (rect->x < adjustment->value) {
 711                 value = MAX (adjustment->lower, rect->x - MARGIN);
 712                 gtk_adjustment_set_value (view->hadjustment, value);
 713         } else if (rect->x + rect->height >
 714                    adjustment->value + widget->allocation.width) {
 715                 value = MIN (adjustment->upper, rect->x + rect->width -
 716                              widget->allocation.width + MARGIN);
 717                 gtk_adjustment_set_value (view->hadjustment, value);
 718         }
 719
 720         gtk_widget_queue_resize (GTK_WIDGET (view));
 721 }
 722
 723 /*** Geometry computations ***/
 724
 725 static void
 726 compute_border (EvView *view, int width, int height, GtkBorder *border)
 727 {
 728         if (view->presentation) {
 729                 border->left = 0;
 730                 border->right = 0;
 731                 border->top = 0;
 732                 border->bottom = 0;
 733         } else {
 734                 ev_document_misc_get_page_border_size (width, height, border);
 735         }
 736 }
 737
 738 static void
 739 get_page_y_offset (EvView *view, int page, double zoom, int *y_offset)
 740 {
 741         int max_width, offset;
 742         GtkBorder border;
 743
 744         g_return_if_fail (y_offset != NULL);
 745
 746         ev_page_cache_get_max_width (view->page_cache, view->rotation, zoom, &max_width);
 747
 748         compute_border (view, max_width, max_width, &border);
 749
 750         if (view->dual_page) {
 751                 ev_page_cache_get_height_to_page (view->page_cache, page,
 752                                                   view->rotation, zoom, NULL, &offset);
 753                 offset += ((page + ev_page_cache_get_dual_even_left (view->page_cache)) / 2 + 1) * view->spacing + ((page + ev_page_cache_get_dual_even_left (view->page_cache)) / 2 ) * (border.top + border.bottom);
 754         } else {
 755                 ev_page_cache_get_height_to_page (view->page_cache, page,
 756                                                   view->rotation, zoom, &offset, NULL);
 757                 offset += (page + 1) * view->spacing + page * (border.top + border.bottom);
 758         }
 759
 760         *y_offset = offset;
 761         return;
 762 }
 763
 764 static gboolean
 765 get_page_extents (EvView       *view,
 766                   gint          page,
 767                   GdkRectangle *page_area,
 768                   GtkBorder    *border)
 769 {
 770         GtkWidget *widget;
 771         int width, height;
 772
 773         widget = GTK_WIDGET (view);
 774
 775         /* Get the size of the page */
 776         ev_page_cache_get_size (view->page_cache, page,
 777                                 view->rotation,
 778                                 view->scale,
 779                                 &width, &height);
 780         compute_border (view, width, height, border);
 781         page_area->width = width + border->left + border->right;
 782         page_area->height = height + border->top + border->bottom;
 783
 784         if (view->presentation) {
 785                 page_area->x = (MAX (0, widget->allocation.width - width))/2;
 786                 page_area->y = (MAX (0, widget->allocation.height - height))/2;
 787         } else if (view->continuous) {
 788                 gint max_width;
 789                 gint x, y;
 790
 791                 ev_page_cache_get_max_width (view->page_cache, view->rotation,
 792                                              view->scale, &max_width);
 793                 max_width = max_width + border->left + border->right;
 794                 /* Get the location of the bounding box */
 795                 if (view->dual_page) {
 796                         x = view->spacing + ((page % 2 == ev_page_cache_get_dual_even_left (view->page_cache)) ? 0 : 1) * (max_width + view->spacing);
 797                         x = x + MAX (0, widget->allocation.width - (max_width * 2 + view->spacing * 3)) / 2;
 798                         if (page % 2 == ev_page_cache_get_dual_even_left (view->page_cache))
 799                                 x = x + (max_width - width - border->left - border->right);
 800                 } else {
 801                         x = view->spacing;
 802                         x = x + MAX (0, widget->allocation.width - (width + view->spacing * 2)) / 2;
 803                 }
 804
 805                 get_page_y_offset (view, page, view->scale, &y);
 806
 807                 page_area->x = x;
 808                 page_area->y = y;
 809         } else {
 810                 gint x, y;
 811                 if (view->dual_page) {
 812                         gint width_2, height_2;
 813                         gint max_width = width;
 814                         gint max_height = height;
 815                         GtkBorder overall_border;
 816                         gint other_page;
 817
 818                         other_page = (page % 2 == ev_page_cache_get_dual_even_left (view->page_cache)) ? page + 1: page - 1;
 819
 820                         /* First, we get the bounding box of the two pages */
 821                         if (other_page < ev_page_cache_get_n_pages (view->page_cache)
 822                             && (0 <= other_page)) {
 823                                 ev_page_cache_get_size (view->page_cache,
 824                                                         other_page,
 825                                                         view->rotation,
 826                                                         view->scale,
 827                                                         &width_2, &height_2);
 828                                 if (width_2 > width)
 829                                         max_width = width_2;
 830                                 if (height_2 > height)
 831                                         max_height = height_2;
 832                         }
 833                         compute_border (view, max_width, max_height, &overall_border);
 834
 835                         /* Find the offsets */
 836                         x = view->spacing;
 837                         y = view->spacing;
 838
 839                         /* Adjust for being the left or right page */
 840                         if (page % 2 == ev_page_cache_get_dual_even_left (view->page_cache))
 841                                 x = x + max_width - width;
 842                         else
 843                                 x = x + (max_width + overall_border.left + overall_border.right) + view->spacing;
 844
 845                         y = y + (max_height - height)/2;
 846
 847                         /* Adjust for extra allocation */
 848                         x = x + MAX (0, widget->allocation.width -
 849                                      ((max_width + overall_border.left + overall_border.right) * 2 + view->spacing * 3))/2;
 850                         y = y + MAX (0, widget->allocation.height - (height + view->spacing * 2))/2;
 851                 } else {
 852                         x = view->spacing;
 853                         y = view->spacing;
 854
 855                         /* Adjust for extra allocation */
 856                         x = x + MAX (0, widget->allocation.width - (width + border->left + border->right + view->spacing * 2))/2;
 857                         y = y + MAX (0, widget->allocation.height - (height + border->top + border->bottom +  view->spacing * 2))/2;
 858                 }
 859
 860                 page_area->x = x;
 861                 page_area->y = y;
 862         }
 863
 864         return TRUE;
 865 }
 866
 867 static void
 868 view_point_to_doc_point (EvView *view,
 869                          GdkPoint *view_point,
 870                          GdkRectangle *page_area,
 871                          double  *doc_point_x,
 872                          double  *doc_point_y)
 873 {
 874         *doc_point_x = (double) (view_point->x - page_area->x) / view->scale;
 875         *doc_point_y = (double) (view_point->y - page_area->y) / view->scale;
 876 }
 877
 878 static void
 879 view_rect_to_doc_rect (EvView *view,
 880                        GdkRectangle *view_rect,
 881                        GdkRectangle *page_area,
 882                        EvRectangle  *doc_rect)
 883 {
 884         doc_rect->x1 = (double) (view_rect->x - page_area->x) / view->scale;
 885         doc_rect->y1 = (double) (view_rect->y - page_area->y) / view->scale;
 886         doc_rect->x2 = doc_rect->x1 + (double) view_rect->width / view->scale;
 887         doc_rect->y2 = doc_rect->y1 + (double) view_rect->height / view->scale;
 888 }
 889
 890 static gboolean
 891 doc_point_to_view_point (EvView       *view,
 892                          int           page,
 893                          EvPoint      *doc_point,
 894                          GdkPoint     *view_point)
 895 {
 896         GdkRectangle page_area;
 897         GtkBorder border;
 898         double x, y, view_x, view_y;
 899         int width, height;
 900
 901         ev_page_cache_get_size (view->page_cache, page,
 902                                 view->rotation,
 903                                 1.0,
 904                                 &width, &height);
 905
 906         if (view->rotation == 0) {
 907                 x = doc_point->x;
 908                 y = doc_point->y;
 909         } else if (view->rotation == 90) {
 910                 x = width - doc_point->y;
 911                 y = doc_point->x;
 912         } else if (view->rotation == 180) {
 913                 x = width - doc_point->x;
 914                 y = height - doc_point->y;
 915         } else if (view->rotation == 270) {
 916                 x = doc_point->y;
 917                 y = height - doc_point->x;
 918         } else {
 919                 g_assert_not_reached ();
 920         }
 921
 922         get_page_extents (view, page, &page_area, &border);
 923
 924         view_x = x * view->scale;
 925         view_y = y * view->scale;
 926         view_point->x = view_x + page_area.x;
 927         view_point->y = view_y + page_area.y;
 928
 929         return (view_x > 0 && view_x <= page_area.width &&
 930                 view_y > 0 && view_y <= page_area.height);
 931 }
 932
 933 static void
 934 doc_rect_to_view_rect (EvView       *view,
 935                        int           page,
 936                        EvRectangle  *doc_rect,
 937                        GdkRectangle *view_rect)
 938 {
 939         GdkRectangle page_area;
 940         GtkBorder border;
 941         double x, y, w, h;
 942         int width, height;
 943
 944         ev_page_cache_get_size (view->page_cache, page,
 945                                 view->rotation,
 946                                 1.0,
 947                                 &width, &height);
 948
 949         if (view->rotation == 0) {
 950                 x = doc_rect->x1;
 951                 y = doc_rect->y1;
 952                 w = doc_rect->x2 - doc_rect->x1;
 953                 h = doc_rect->y2 - doc_rect->y1;
 954         } else if (view->rotation == 90) {
 955                 x = width - doc_rect->y2;
 956                 y = doc_rect->x1;
 957                 w = doc_rect->y2 - doc_rect->y1;
 958                 h = doc_rect->x2 - doc_rect->x1;
 959         } else if (view->rotation == 180) {
 960                 x = width - doc_rect->x2;
 961                 y = height - doc_rect->y2;
 962                 w = doc_rect->x2 - doc_rect->x1;
 963                 h = doc_rect->y2 - doc_rect->y1;
 964         } else if (view->rotation == 270) {
 965                 x = doc_rect->y1;
 966                 y = height - doc_rect->x2;
 967                 w = doc_rect->y2 - doc_rect->y1;
 968                 h = doc_rect->x2 - doc_rect->x1;
 969         } else {
 970                 g_assert_not_reached ();
 971         }
 972
 973         get_page_extents (view, page, &page_area, &border);
 974
 975         view_rect->x = x * view->scale + page_area.x;
 976         view_rect->y = y * view->scale + page_area.y;
 977         view_rect->width = w * view->scale;
 978         view_rect->height = h * view->scale;
 979 }
 980
 981 static void
 982 find_page_at_location (EvView  *view,
 983                        gdouble  x,
 984                        gdouble  y,
 985                        gint    *page,
 986                        gint    *x_offset,
 987                        gint    *y_offset)
 988 {
 989         int i;
 990
 991         if (view->document == NULL)
 992                 return;
 993
 994         g_assert (page);
 995         g_assert (x_offset);
 996         g_assert (y_offset);
 997
 998         for (i = view->start_page; i <= view->end_page; i++) {
 999                 GdkRectangle page_area;
1000                 GtkBorder border;
1001
1002                 if (! get_page_extents (view, i, &page_area, &border))
1003                         continue;
1004
1005                 if ((x >= page_area.x + border.left) &&
1006                     (x < page_area.x + page_area.width - border.right) &&
1007                     (y >= page_area.y + border.top) &&
1008                     (y < page_area.y + page_area.height - border.bottom)) {
1009                         *page = i;
1010                         *x_offset = x - (page_area.x + border.left);
1011                         *y_offset = y - (page_area.y + border.top);
1012                         return;
1013                 }
1014         }
1015
1016         *page = -1;
1017 }
1018
1019 static gboolean
1020 location_in_text (EvView  *view,
1021                   gdouble  x,
1022                   gdouble  y)
1023 {
1024         GdkRegion *region;
1025         gint page = -1;
1026         gint x_offset = 0, y_offset = 0;
1027
1028         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1029
1030         if (page == -1)
1031                 return FALSE;
1032
1033         region = ev_pixbuf_cache_get_text_mapping (view->pixbuf_cache, page);
1034
1035         if (region)
1036                 return gdk_region_point_in (region, x_offset / view->scale, y_offset / view->scale);
1037         else
1038                 return FALSE;
1039 }
1040
1041 static int
1042 ev_view_get_width (EvView *view)
1043 {
1044         return GTK_WIDGET (view)->allocation.width;
1045 }
1046
1047 static int
1048 ev_view_get_height (EvView *view)
1049 {
1050         return GTK_WIDGET (view)->allocation.height;
1051 }
1052
1053 static gboolean
1054 location_in_selected_text (EvView  *view,
1055                            gdouble  x,
1056                            gdouble  y)
1057 {
1058         gint page = -1;
1059         gint x_offset = 0, y_offset = 0;
1060         EvViewSelection *selection;
1061         GList *l = NULL;
1062
1063         for (l = view->selection_info.selections; l != NULL; l = l->next) {
1064                 selection = (EvViewSelection *)l->data;
1065
1066                 find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1067
1068                 if (page != selection->page)
1069                         continue;
1070
1071                 if (selection->covered_region &&
1072                     gdk_region_point_in (selection->covered_region, x_offset, y_offset))
1073                         return TRUE;
1074         }
1075
1076         return FALSE;
1077 }
1078
1079 static gboolean
1080 get_doc_point_from_offset (EvView *view,
1081                            gint    page,
1082                            gint    x_offset,
1083                            gint    y_offset,
1084                            gint   *x_new,
1085                            gint   *y_new)
1086 {
1087         int width, height;
1088         double x, y;
1089
1090         ev_page_cache_get_size (view->page_cache, page,
1091                                 view->rotation,
1092                                 1.0,
1093                                 &width, &height);
1094
1095         x_offset = x_offset / view->scale;
1096         y_offset = y_offset / view->scale;
1097
1098         if (view->rotation == 0) {
1099                 x = x_offset;
1100                 y = y_offset;
1101         } else if (view->rotation == 90) {
1102                 x = y_offset;
1103                 y = width - x_offset;
1104         } else if (view->rotation == 180) {
1105                 x = width - x_offset;
1106                 y = height - y_offset;
1107         } else if (view->rotation == 270) {
1108                 x = height - y_offset;
1109                 y = x_offset;
1110         } else {
1111                 g_assert_not_reached ();
1112         }
1113
1114         *x_new = x;
1115         *y_new = y;
1116
1117         return TRUE;
1118 }
1119
1120 static gboolean
1121 get_doc_point_from_location (EvView  *view,
1122                              gdouble  x,
1123                              gdouble  y,
1124                              gint    *page,
1125                              gint    *x_new,
1126                              gint    *y_new)
1127 {
1128         gint x_offset = 0, y_offset = 0;
1129
1130         x += view->scroll_x;
1131         y += view->scroll_y;
1132         find_page_at_location (view, x, y, page, &x_offset, &y_offset);
1133         if (*page == -1)
1134                 return FALSE;
1135
1136         return get_doc_point_from_offset (view, *page, x_offset, y_offset, x_new, y_new);
1137 }
1138
1139 static void
1140 ev_view_get_area_from_mapping (EvView       *view,
1141                                guint         page,
1142                                GList        *mapping_list,
1143                                gconstpointer data,
1144                                GdkRectangle *area)
1145 {
1146         EvMapping *mapping;
1147
1148         mapping = ev_mapping_list_find (mapping_list, data);
1149         doc_rect_to_view_rect (view, page, &mapping->area, area);
1150         area->x -= view->scroll_x;
1151         area->y -= view->scroll_y;
1152 }
1153
1154
1155 /*** Hyperref ***/
1156 static EvLink *
1157 ev_view_get_link_at_location (EvView  *view,
1158                               gdouble  x,
1159                               gdouble  y)
1160 {
1161         gint page = -1;
1162         gint x_new = 0, y_new = 0;
1163         GList *link_mapping;
1164
1165         if (!EV_IS_DOCUMENT_LINKS (view->document))
1166                 return NULL;
1167
1168         if (!get_doc_point_from_location (view, x, y, &page, &x_new, &y_new))
1169                 return NULL;
1170
1171         link_mapping = ev_pixbuf_cache_get_link_mapping (view->pixbuf_cache, page);
1172
1173         if (link_mapping)
1174                 return ev_mapping_list_get_data (link_mapping, x_new, y_new);
1175         else
1176                 return NULL;
1177 }
1178
1179 static void
1180 goto_fitr_dest (EvView *view, EvLinkDest *dest)
1181 {
1182         EvPoint doc_point;
1183         gdouble zoom, left, top;
1184         gboolean change_left, change_top;
1185
1186         left = ev_link_dest_get_left (dest, &change_left);
1187         top = ev_link_dest_get_top (dest, &change_top);
1188
1189         zoom = zoom_for_size_best_fit (ev_link_dest_get_right (dest) - left,
1190                                        ev_link_dest_get_bottom (dest) - top,
1191                                        ev_view_get_width (view),
1192                                        ev_view_get_height (view), 0, 0);
1193
1194         ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1195         ev_view_set_zoom (view, zoom, FALSE);
1196
1197         doc_point.x = change_left ? left : 0;
1198         doc_point.y = change_top ? top : 0;
1199
1200         view->current_page = ev_link_dest_get_page (dest);
1201         if (change_left || change_top)
1202                 view->pending_point = doc_point;
1203         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1204
1205         gtk_widget_queue_resize (GTK_WIDGET (view));
1206 }
1207
1208 static void
1209 goto_fitv_dest (EvView *view, EvLinkDest *dest)
1210 {
1211         EvPoint doc_point;
1212         int doc_width, doc_height, page;
1213         double zoom, left;
1214         gboolean change_left;
1215
1216         page = ev_link_dest_get_page (dest);
1217         ev_page_cache_get_size (view->page_cache, page, 0, 1.0, &doc_width, &doc_height);
1218
1219         left = ev_link_dest_get_left (dest, &change_left);
1220         doc_point.x = change_left ? left : 0;
1221         doc_point.y = 0;
1222
1223         zoom = zoom_for_size_fit_height (doc_width - doc_point.x , doc_height,
1224                                          ev_view_get_width (view),
1225                                          ev_view_get_height (view), 0);
1226
1227         ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1228         ev_view_set_zoom (view, zoom, FALSE);
1229
1230         view->current_page = page;
1231         if (change_left)
1232                 view->pending_point = doc_point;
1233         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1234
1235         gtk_widget_queue_resize (GTK_WIDGET (view));
1236 }
1237
1238 static void
1239 goto_fith_dest (EvView *view, EvLinkDest *dest)
1240 {
1241         EvPoint doc_point;
1242         int doc_width, doc_height, page;
1243         gdouble zoom, top;
1244         gboolean change_top;
1245
1246         page = ev_link_dest_get_page (dest);
1247         ev_page_cache_get_size (view->page_cache, page, 0, 1.0, &doc_width, &doc_height);
1248
1249         top = ev_link_dest_get_top (dest, &change_top);
1250
1251         doc_point.x = 0;
1252         doc_point.y = change_top ? top : 0;
1253
1254         zoom = zoom_for_size_fit_width (doc_width, top,
1255                                         ev_view_get_width (view),
1256                                         ev_view_get_height (view), 0);
1257
1258         ev_view_set_sizing_mode (view, EV_SIZING_FIT_WIDTH);
1259         ev_view_set_zoom (view, zoom, FALSE);
1260
1261         view->current_page = page;
1262         if (change_top)
1263                 view->pending_point = doc_point;
1264         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1265
1266         gtk_widget_queue_resize (GTK_WIDGET (view));
1267 }
1268
1269 static void
1270 goto_fit_dest (EvView *view, EvLinkDest *dest)
1271 {
1272         double zoom;
1273         int doc_width, doc_height;
1274         int page;
1275
1276         page = ev_link_dest_get_page (dest);
1277         ev_page_cache_get_size (view->page_cache, page, 0, 1.0, &doc_width, &doc_height);
1278
1279         zoom = zoom_for_size_best_fit (doc_width, doc_height, ev_view_get_width (view),
1280                                        ev_view_get_height (view), 0, 0);
1281
1282         ev_view_set_sizing_mode (view, EV_SIZING_BEST_FIT);
1283         ev_view_set_zoom (view, zoom, FALSE);
1284
1285         view->current_page = page;
1286         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1287
1288         gtk_widget_queue_resize (GTK_WIDGET (view));
1289 }
1290
1291 static void
1292 goto_xyz_dest (EvView *view, EvLinkDest *dest)
1293 {
1294         EvPoint doc_point;
1295         gint page;
1296         gdouble zoom, left, top;
1297         gboolean change_zoom, change_left, change_top;
1298
1299         zoom = ev_link_dest_get_zoom (dest, &change_zoom);
1300         page = ev_link_dest_get_page (dest);
1301
1302         if (change_zoom && zoom > 1) {
1303                 ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1304                 ev_view_set_zoom (view, zoom, FALSE);
1305         }
1306
1307         left = ev_link_dest_get_left (dest, &change_left);
1308         top = ev_link_dest_get_top (dest, &change_top);
1309
1310         doc_point.x = change_left ? left : 0;
1311         doc_point.y = change_top ? top : 0;
1312
1313         view->current_page = page;
1314         if (change_left || change_top)
1315                 view->pending_point = doc_point;
1316         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1317
1318         gtk_widget_queue_resize (GTK_WIDGET (view));
1319 }
1320
1321 static void
1322 goto_dest (EvView *view, EvLinkDest *dest)
1323 {
1324         EvLinkDestType type;
1325         int page, n_pages, current_page;
1326
1327         page = ev_link_dest_get_page (dest);
1328         n_pages = ev_page_cache_get_n_pages (view->page_cache);
1329
1330         if (page < 0 || page >= n_pages)
1331                 return;
1332
1333         current_page = view->current_page;
1334
1335         type = ev_link_dest_get_dest_type (dest);
1336
1337         switch (type) {
1338                 case EV_LINK_DEST_TYPE_PAGE:
1339                         ev_page_cache_set_current_page (view->page_cache, page);
1340                         break;
1341                 case EV_LINK_DEST_TYPE_FIT:
1342                         goto_fit_dest (view, dest);
1343                         break;
1344                 case EV_LINK_DEST_TYPE_FITH:
1345                         goto_fith_dest (view, dest);
1346                         break;
1347                 case EV_LINK_DEST_TYPE_FITV:
1348                         goto_fitv_dest (view, dest);
1349                         break;
1350                 case EV_LINK_DEST_TYPE_FITR:
1351                         goto_fitr_dest (view, dest);
1352                         break;
1353                 case EV_LINK_DEST_TYPE_XYZ:
1354                         goto_xyz_dest (view, dest);
1355                         break;
1356                 case EV_LINK_DEST_TYPE_PAGE_LABEL:
1357                         ev_page_cache_set_page_label (view->page_cache, ev_link_dest_get_page_label (dest));
1358                         break;
1359                 default:
1360                         g_assert_not_reached ();
1361         }
1362
1363         if (current_page != view->current_page)
1364                 ev_page_cache_set_current_page (view->page_cache,
1365                                                 view->current_page);
1366 }
1367
1368 static void
1369 ev_view_goto_dest (EvView *view, EvLinkDest *dest)
1370 {
1371         EvLinkDestType type;
1372
1373         type = ev_link_dest_get_dest_type (dest);
1374
1375         if (type == EV_LINK_DEST_TYPE_NAMED) {
1376                 EvLinkDest  *dest2;
1377                 const gchar *named_dest;
1378
1379                 named_dest = ev_link_dest_get_named_dest (dest);
1380                 dest2 = ev_document_links_find_link_dest (EV_DOCUMENT_LINKS (view->document),
1381                                                           named_dest);
1382                 if (dest2) {
1383                         goto_dest (view, dest2);
1384                         g_object_unref (dest2);
1385                 }
1386
1387                 return;
1388         }
1389
1390         goto_dest (view, dest);
1391 }
1392
1393 void
1394 ev_view_handle_link (EvView *view, EvLink *link)
1395 {
1396         EvLinkAction    *action = NULL;
1397         EvLinkActionType type;
1398
1399         action = ev_link_get_action (link);
1400         if (!action)
1401                 return;
1402
1403         type = ev_link_action_get_action_type (action);
1404
1405         switch (type) {
1406                 case EV_LINK_ACTION_TYPE_GOTO_DEST: {
1407                         EvLinkDest *dest;
1408
1409                         g_signal_emit (view, signals[SIGNAL_HANDLE_LINK], 0, link);
1410
1411                         dest = ev_link_action_get_dest (action);
1412                         ev_view_goto_dest (view, dest);
1413                 }
1414                         break;
1415                 case EV_LINK_ACTION_TYPE_GOTO_REMOTE:
1416                 case EV_LINK_ACTION_TYPE_EXTERNAL_URI:
1417                 case EV_LINK_ACTION_TYPE_LAUNCH:
1418                 case EV_LINK_ACTION_TYPE_NAMED:
1419                         g_signal_emit (view, signals[SIGNAL_EXTERNAL_LINK], 0, action);
1420                         break;
1421         }
1422 }
1423
1424 gchar *
1425 ev_view_page_label_from_dest (EvView *view, EvLinkDest *dest)
1426 {
1427         EvLinkDestType type;
1428         gchar *msg = NULL;
1429
1430         type = ev_link_dest_get_dest_type (dest);
1431
1432         switch (type) {
1433                 case EV_LINK_DEST_TYPE_NAMED: {
1434                         EvLinkDest  *dest2;
1435                         const gchar *named_dest;
1436
1437                         named_dest = ev_link_dest_get_named_dest (dest);
1438                         dest2 = ev_document_links_find_link_dest (EV_DOCUMENT_LINKS (view->document),
1439                                                                   named_dest);
1440                         if (dest2) {
1441                                 msg = ev_page_cache_get_page_label (view->page_cache,
1442                                                                     ev_link_dest_get_page (dest2));
1443                                 g_object_unref (dest2);
1444                         }
1445                 }
1446
1447                         break;
1448                 case EV_LINK_DEST_TYPE_PAGE_LABEL: {
1449                         msg = g_strdup (ev_link_dest_get_page_label (dest));
1450                 }
1451                         break;
1452                 default:
1453                         msg = ev_page_cache_get_page_label (view->page_cache,
1454                                                             ev_link_dest_get_page (dest));
1455         }
1456
1457         return msg;
1458 }
1459
1460 static char *
1461 tip_from_action_named (EvLinkAction *action)
1462 {
1463         const gchar *name = ev_link_action_get_name (action);
1464
1465         if (g_ascii_strcasecmp (name, "FirstPage") == 0) {
1466                 return g_strdup (_("Go to first page"));
1467         } else if (g_ascii_strcasecmp (name, "PrevPage") == 0) {
1468                 return g_strdup (_("Go to previous page"));
1469         } else if (g_ascii_strcasecmp (name, "NextPage") == 0) {
1470                 return g_strdup (_("Go to next page"));
1471         } else if (g_ascii_strcasecmp (name, "LastPage") == 0) {
1472                 return g_strdup (_("Go to last page"));
1473         } else if (g_ascii_strcasecmp (name, "GoToPage") == 0) {
1474                 return g_strdup (_("Go to page"));
1475         } else if (g_ascii_strcasecmp (name, "Find") == 0) {
1476                 return g_strdup (_("Find"));
1477         }
1478
1479         return NULL;
1480 }
1481
1482 static char *
1483 tip_from_link (EvView *view, EvLink *link)
1484 {
1485         EvLinkAction *action;
1486         EvLinkActionType type;
1487         char *msg = NULL;
1488         char *page_label;
1489         const char *title;
1490
1491         action = ev_link_get_action (link);
1492         title = ev_link_get_title (link);
1493
1494         if (!action)
1495                 return title ? g_strdup (title) : NULL;
1496
1497         type = ev_link_action_get_action_type (action);
1498
1499         switch (type) {
1500                 case EV_LINK_ACTION_TYPE_GOTO_DEST:
1501                         page_label = ev_view_page_label_from_dest (view,
1502                                                                    ev_link_action_get_dest (action));
1503                         if (page_label) {
1504                                 msg = g_strdup_printf (_("Go to page %s"), page_label);
1505                                 g_free (page_label);
1506                         }
1507                         break;
1508                 case EV_LINK_ACTION_TYPE_GOTO_REMOTE:
1509                         if (title) {
1510                                 msg = g_strdup_printf (_("Go to %s on file “%s”"), title,
1511                                                        ev_link_action_get_filename (action));
1512                         } else {
1513                                 msg = g_strdup_printf (_("Go to file “%s”"),
1514                                                        ev_link_action_get_filename (action));
1515                         }
1516                         break;
1517                 case EV_LINK_ACTION_TYPE_EXTERNAL_URI:
1518                         msg = g_strdup (ev_link_action_get_uri (action));
1519                         break;
1520                 case EV_LINK_ACTION_TYPE_LAUNCH:
1521                         msg = g_strdup_printf (_("Launch %s"),
1522                                                ev_link_action_get_filename (action));
1523                         break;
1524                 case EV_LINK_ACTION_TYPE_NAMED:
1525                         msg = tip_from_action_named (action);
1526                         break;
1527                 default:
1528                         if (title)
1529                                 msg = g_strdup (title);
1530                         break;
1531         }
1532
1533         return msg;
1534 }
1535
1536 static void
1537 ev_view_handle_cursor_over_xy (EvView *view, gint x, gint y)
1538 {
1539         EvLink       *link;
1540         EvFormField  *field;
1541         EvAnnotation *annot = NULL;
1542
1543         if (view->cursor == EV_VIEW_CURSOR_HIDDEN)
1544                 return;
1545
1546         if (view->drag_info.in_drag) {
1547                 if (view->cursor != EV_VIEW_CURSOR_DRAG)
1548                         ev_view_set_cursor (view, EV_VIEW_CURSOR_DRAG);
1549                 return;
1550         }
1551
1552         if (view->scroll_info.autoscrolling) {
1553                 if (view->cursor != EV_VIEW_CURSOR_AUTOSCROLL)
1554                         ev_view_set_cursor (view, EV_VIEW_CURSOR_AUTOSCROLL);
1555                 return;
1556         }
1557
1558         link = ev_view_get_link_at_location (view, x, y);
1559         if (link) {
1560                 ev_view_set_cursor (view, EV_VIEW_CURSOR_LINK);
1561         } else if ((field = ev_view_get_form_field_at_location (view, x, y))) {
1562                 if (field->is_read_only) {
1563                         if (view->cursor == EV_VIEW_CURSOR_LINK ||
1564                             view->cursor == EV_VIEW_CURSOR_IBEAM ||
1565                             view->cursor == EV_VIEW_CURSOR_DRAG)
1566                                 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
1567                 } else if (EV_IS_FORM_FIELD_TEXT (field)) {
1568                         ev_view_set_cursor (view, EV_VIEW_CURSOR_IBEAM);
1569                 } else {
1570                         ev_view_set_cursor (view, EV_VIEW_CURSOR_LINK);
1571                 }
1572         } else if ((annot = ev_view_get_annotation_at_location (view, x, y))) {
1573                 ev_view_set_cursor (view, EV_VIEW_CURSOR_LINK);
1574         } else if (location_in_text (view, x + view->scroll_x, y + view->scroll_y)) {
1575                 ev_view_set_cursor (view, EV_VIEW_CURSOR_IBEAM);
1576         } else {
1577                 if (view->cursor == EV_VIEW_CURSOR_LINK ||
1578                     view->cursor == EV_VIEW_CURSOR_IBEAM ||
1579                     view->cursor == EV_VIEW_CURSOR_DRAG ||
1580                     view->cursor == EV_VIEW_CURSOR_AUTOSCROLL)
1581                         ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
1582         }
1583
1584         if (link || annot)
1585                 g_object_set (view, "has-tooltip", TRUE, NULL);
1586 }
1587
1588 /*** Images ***/
1589 static EvImage *
1590 ev_view_get_image_at_location (EvView  *view,
1591                                gdouble  x,
1592                                gdouble  y)
1593 {
1594         gint page = -1;
1595         gint x_new = 0, y_new = 0;
1596         GList *image_mapping;
1597
1598         if (!EV_IS_DOCUMENT_IMAGES (view->document))
1599                 return NULL;
1600
1601         if (!get_doc_point_from_location (view, x, y, &page, &x_new, &y_new))
1602                 return NULL;
1603
1604         image_mapping = ev_pixbuf_cache_get_image_mapping (view->pixbuf_cache, page);
1605
1606         if (image_mapping)
1607                 return ev_mapping_list_get_data (image_mapping, x_new, y_new);
1608         else
1609                 return NULL;
1610 }
1611
1612 /*** Forms ***/
1613 static EvFormField *
1614 ev_view_get_form_field_at_location (EvView  *view,
1615                                     gdouble  x,
1616                                     gdouble  y)
1617 {
1618         gint page = -1;
1619         gint x_new = 0, y_new = 0;
1620         GList *forms_mapping;
1621
1622         if (!EV_IS_DOCUMENT_FORMS (view->document))
1623                 return NULL;
1624
1625         if (!get_doc_point_from_location (view, x, y, &page, &x_new, &y_new))
1626                 return NULL;
1627
1628         forms_mapping = ev_pixbuf_cache_get_form_field_mapping (view->pixbuf_cache, page);
1629
1630         if (forms_mapping)
1631                 return ev_mapping_list_get_data (forms_mapping, x_new, y_new);
1632         else
1633                 return NULL;
1634 }
1635
1636 static GdkRegion *
1637 ev_view_form_field_get_region (EvView      *view,
1638                                EvFormField *field)
1639 {
1640         GdkRectangle view_area;
1641         GList       *forms_mapping;
1642
1643         forms_mapping = ev_pixbuf_cache_get_form_field_mapping (view->pixbuf_cache,
1644                                                                 field->page->index);
1645         ev_view_get_area_from_mapping (view, field->page->index,
1646                                        forms_mapping,
1647                                        field, &view_area);
1648
1649         return gdk_region_rectangle (&view_area);
1650 }
1651
1652 static gboolean
1653 ev_view_forms_remove_widgets (EvView *view)
1654 {
1655         ev_view_remove_all (view);
1656
1657         return FALSE;
1658 }
1659
1660 static void
1661 ev_view_form_field_destroy (GtkWidget *widget,
1662                             EvView    *view)
1663 {
1664         g_idle_add ((GSourceFunc)ev_view_forms_remove_widgets, view);
1665 }
1666
1667 static GtkWidget *
1668 ev_view_form_field_button_create_widget (EvView      *view,
1669                                          EvFormField *field)
1670 {
1671         EvFormFieldButton *field_button = EV_FORM_FIELD_BUTTON (field);
1672         GdkRegion         *field_region = NULL;
1673
1674         switch (field_button->type) {
1675                 case EV_FORM_FIELD_BUTTON_PUSH:
1676                         return NULL;
1677                 case EV_FORM_FIELD_BUTTON_CHECK:
1678                 case EV_FORM_FIELD_BUTTON_RADIO: {
1679                         gboolean  state;
1680                         GList    *forms_mapping, *l;
1681
1682                         state = ev_document_forms_form_field_button_get_state (EV_DOCUMENT_FORMS (view->document),
1683                                                                                field);
1684
1685                         /* FIXME: it actually depends on NoToggleToOff flags */
1686                         if (field_button->type == EV_FORM_FIELD_BUTTON_RADIO &&
1687                             state && field_button->state)
1688                                 return NULL;
1689
1690                         field_region = ev_view_form_field_get_region (view, field);
1691
1692                         /* For radio buttons and checkbox buttons that are in a set
1693                          * we need to update also the region for the current selected item
1694                          */
1695                         forms_mapping = ev_pixbuf_cache_get_form_field_mapping (view->pixbuf_cache,
1696                                                                                 field->page->index);
1697                         for (l = forms_mapping; l; l = g_list_next (l)) {
1698                                 EvFormField *button = ((EvMapping *)(l->data))->data;
1699                                 GdkRegion   *button_region;
1700
1701                                 if (button->id == field->id)
1702                                         continue;
1703
1704                                 /* FIXME: only buttons in the same group should be updated */
1705                                 if (!EV_IS_FORM_FIELD_BUTTON (button) ||
1706                                     EV_FORM_FIELD_BUTTON (button)->type != field_button->type ||
1707                                     EV_FORM_FIELD_BUTTON (button)->state != TRUE)
1708                                         continue;
1709
1710                                 button_region = ev_view_form_field_get_region (view, button);
1711                                 gdk_region_union (field_region, button_region);
1712                                 gdk_region_destroy (button_region);
1713                         }
1714
1715                         ev_document_forms_form_field_button_set_state (EV_DOCUMENT_FORMS (view->document),
1716                                                                        field, !state);
1717                         field_button->state = !state;
1718                 }
1719                         break;
1720         }
1721
1722         ev_view_reload_page (view, field->page->index, field_region);
1723         gdk_region_destroy (field_region);
1724
1725         return NULL;
1726 }
1727
1728 static void
1729 ev_view_form_field_text_save (EvView    *view,
1730                               GtkWidget *widget)
1731 {
1732         EvFormField *field;
1733
1734         if (!view->document)
1735                 return;
1736
1737         field = g_object_get_data (G_OBJECT (widget), "form-field");
1738
1739         if (field->changed) {
1740                 EvFormFieldText *field_text = EV_FORM_FIELD_TEXT (field);
1741                 GdkRegion       *field_region;
1742
1743                 field_region = ev_view_form_field_get_region (view, field);
1744
1745                 ev_document_forms_form_field_text_set_text (EV_DOCUMENT_FORMS (view->document),
1746                                                             field, field_text->text);
1747                 field->changed = FALSE;
1748                 ev_view_reload_page (view, field->page->index, field_region);
1749                 gdk_region_destroy (field_region);
1750         }
1751 }
1752
1753 static void
1754 ev_view_form_field_text_changed (GtkWidget   *widget,
1755                                  EvFormField *field)
1756 {
1757         EvFormFieldText *field_text = EV_FORM_FIELD_TEXT (field);
1758         gchar           *text = NULL;
1759
1760         if (GTK_IS_ENTRY (widget)) {
1761                 text = g_strdup (gtk_entry_get_text (GTK_ENTRY (widget)));
1762         } else if (GTK_IS_TEXT_BUFFER (widget)) {
1763                 GtkTextIter start, end;
1764
1765                 gtk_text_buffer_get_bounds (GTK_TEXT_BUFFER (widget), &start, &end);
1766                 text = gtk_text_buffer_get_text (GTK_TEXT_BUFFER (widget),
1767                                                  &start, &end, FALSE);
1768         }
1769
1770         if (!field_text->text ||
1771             (field_text->text && g_ascii_strcasecmp (field_text->text, text) != 0)) {
1772                 g_free (field_text->text);
1773                 field_text->text = text;
1774                 field->changed = TRUE;
1775         }
1776 }
1777
1778 static GtkWidget *
1779 ev_view_form_field_text_create_widget (EvView      *view,
1780                                        EvFormField *field)
1781 {
1782         EvFormFieldText *field_text = EV_FORM_FIELD_TEXT (field);
1783         GtkWidget       *text = NULL;
1784         gchar           *txt;
1785
1786         txt = ev_document_forms_form_field_text_get_text (EV_DOCUMENT_FORMS (view->document),
1787                                                           field);
1788
1789         switch (field_text->type) {
1790                 case EV_FORM_FIELD_TEXT_FILE_SELECT:
1791                         /* TODO */
1792                 case EV_FORM_FIELD_TEXT_NORMAL:
1793                         text = gtk_entry_new ();
1794                         gtk_entry_set_has_frame (GTK_ENTRY (text), FALSE);
1795                         gtk_entry_set_max_length (GTK_ENTRY (text), field_text->max_len);
1796                         gtk_entry_set_visibility (GTK_ENTRY (text), !field_text->is_password);
1797
1798                         if (txt) {
1799                                 gtk_entry_set_text (GTK_ENTRY (text), txt);
1800                                 g_free (txt);
1801                         }
1802
1803                         g_signal_connect (text, "changed",
1804                                           G_CALLBACK (ev_view_form_field_text_changed),
1805                                           field);
1806                         g_signal_connect_after (text, "activate",
1807                                                 G_CALLBACK (ev_view_form_field_destroy),
1808                                                 view);
1809                         break;
1810                 case EV_FORM_FIELD_TEXT_MULTILINE: {
1811                         GtkTextBuffer *buffer;
1812
1813                         text = gtk_text_view_new ();
1814                         buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (text));
1815
1816                         if (txt) {
1817                                 gtk_text_buffer_set_text (buffer, txt, -1);
1818                                 g_free (txt);
1819                         }
1820
1821                         g_signal_connect (buffer, "changed",
1822                                           G_CALLBACK (ev_view_form_field_text_changed),
1823                                           field);
1824                 }
1825                         break;
1826         }
1827
1828         g_object_weak_ref (G_OBJECT (text),
1829                            (GWeakNotify)ev_view_form_field_text_save,
1830                            view);
1831
1832         return text;
1833 }
1834
1835 static void
1836 ev_view_form_field_choice_save (EvView    *view,
1837                                 GtkWidget *widget)
1838 {
1839         EvFormField *field;
1840
1841         if (!view->document)
1842                 return;
1843
1844         field = g_object_get_data (G_OBJECT (widget), "form-field");
1845
1846         if (field->changed) {
1847                 GList             *l;
1848                 EvFormFieldChoice *field_choice = EV_FORM_FIELD_CHOICE (field);
1849                 GdkRegion         *field_region;
1850
1851                 field_region = ev_view_form_field_get_region (view, field);
1852
1853                 if (field_choice->is_editable) {
1854                         ev_document_forms_form_field_choice_set_text (EV_DOCUMENT_FORMS (view->document),
1855                                                                       field, field_choice->text);
1856                 } else {
1857                         ev_document_forms_form_field_choice_unselect_all (EV_DOCUMENT_FORMS (view->document), field);
1858                         for (l = field_choice->selected_items; l; l = g_list_next (l)) {
1859                                 ev_document_forms_form_field_choice_select_item (EV_DOCUMENT_FORMS (view->document),
1860                                                                                  field,
1861                                                                                  GPOINTER_TO_INT (l->data));
1862                         }
1863                 }
1864                 field->changed = FALSE;
1865                 ev_view_reload_page (view, field->page->index, field_region);
1866                 gdk_region_destroy (field_region);
1867         }
1868 }
1869
1870 static void
1871 ev_view_form_field_choice_changed (GtkWidget   *widget,
1872                                    EvFormField *field)
1873 {
1874         EvFormFieldChoice *field_choice = EV_FORM_FIELD_CHOICE (field);
1875
1876         if (GTK_IS_COMBO_BOX (widget)) {
1877                 gint item;
1878
1879                 item = gtk_combo_box_get_active (GTK_COMBO_BOX (widget));
1880                 if (!field_choice->selected_items ||
1881                     GPOINTER_TO_INT (field_choice->selected_items->data) != item) {
1882                         g_list_free (field_choice->selected_items);
1883                         field_choice->selected_items = NULL;
1884                         field_choice->selected_items = g_list_prepend (field_choice->selected_items,
1885                                                                        GINT_TO_POINTER (item));
1886                         field->changed = TRUE;
1887                 }
1888
1889                 if (GTK_IS_COMBO_BOX_ENTRY (widget)) {
1890                         gchar *text;
1891
1892                         text = gtk_combo_box_get_active_text (GTK_COMBO_BOX (widget));
1893                         if (!field_choice->text ||
1894                             (field_choice->text && g_ascii_strcasecmp (field_choice->text, text) != 0)) {
1895                                 g_free (field_choice->text);
1896                                 field_choice->text = text;
1897                                 field->changed = TRUE;
1898                         }
1899                 }
1900         } else if (GTK_IS_TREE_SELECTION (widget)) {
1901                 GtkTreeSelection *selection = GTK_TREE_SELECTION (widget);
1902                 GtkTreeModel     *model;
1903                 GList            *items, *l;
1904
1905                 items = gtk_tree_selection_get_selected_rows (selection, &model);
1906                 g_list_free (field_choice->selected_items);
1907                 field_choice->selected_items = NULL;
1908
1909                 for (l = items; l && l->data; l = g_list_next (l)) {
1910                         GtkTreeIter  iter;
1911                         GtkTreePath *path = (GtkTreePath *)l->data;
1912                         gint         item;
1913
1914                         gtk_tree_model_get_iter (model, &iter, path);
1915                         gtk_tree_model_get (model, &iter, 1, &item, -1);
1916
1917                         field_choice->selected_items = g_list_prepend (field_choice->selected_items,
1918                                                                        GINT_TO_POINTER (item));
1919
1920                         gtk_tree_path_free (path);
1921                 }
1922
1923                 g_list_free (items);
1924
1925                 field->changed = TRUE;
1926         }
1927 }
1928
1929 static GtkWidget *
1930 ev_view_form_field_choice_create_widget (EvView      *view,
1931                                          EvFormField *field)
1932 {
1933         EvFormFieldChoice *field_choice = EV_FORM_FIELD_CHOICE (field);
1934         GtkWidget         *choice;
1935         GtkTreeModel      *model;
1936         gint               n_items, i;
1937         gint               selected_item = 0;
1938
1939         n_items = ev_document_forms_form_field_choice_get_n_items (EV_DOCUMENT_FORMS (view->document),
1940                                                                    field);
1941         model = GTK_TREE_MODEL (gtk_list_store_new (2, G_TYPE_STRING, G_TYPE_INT));
1942         for (i = 0; i < n_items; i++) {
1943                 GtkTreeIter iter;
1944                 gchar      *item;
1945
1946                 item = ev_document_forms_form_field_choice_get_item (EV_DOCUMENT_FORMS (view->document),
1947                                                                      field, i);
1948                 if (ev_document_forms_form_field_choice_is_item_selected (
1949                             EV_DOCUMENT_FORMS (view->document), field, i)) {
1950                         selected_item = i;
1951                         /* FIXME: we need a get_selected_items function in poppler */
1952                         field_choice->selected_items = g_list_prepend (field_choice->selected_items,
1953                                                                        GINT_TO_POINTER (i));
1954                 }
1955
1956                 if (item) {
1957                         gtk_list_store_append (GTK_LIST_STORE (model), &iter);
1958                         gtk_list_store_set (GTK_LIST_STORE (model), &iter,
1959                                             0, item,
1960                                             1, i,
1961                                             -1);
1962                         g_free (item);
1963                 }
1964         }
1965
1966         if (field_choice->type == EV_FORM_FIELD_CHOICE_LIST) {
1967                 GtkCellRenderer  *renderer;
1968                 GtkWidget        *tree_view;
1969                 GtkTreeSelection *selection;
1970
1971                 tree_view = gtk_tree_view_new_with_model (model);
1972                 gtk_tree_view_set_headers_visible (GTK_TREE_VIEW (tree_view), FALSE);
1973
1974                 selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (tree_view));
1975                 if (field_choice->multi_select) {
1976                         gtk_tree_selection_set_mode (selection, GTK_SELECTION_MULTIPLE);
1977                 }
1978
1979                 /* TODO: set selected items */
1980
1981                 renderer = gtk_cell_renderer_text_new ();
1982                 gtk_tree_view_insert_column_with_attributes (GTK_TREE_VIEW (tree_view),
1983                                                              0,
1984                                                              "choix", renderer,
1985                                                              "text", 0,
1986                                                              NULL);
1987
1988                 choice = gtk_scrolled_window_new (NULL, NULL);
1989                 gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (choice),
1990                                                 GTK_POLICY_AUTOMATIC,
1991                                                 GTK_POLICY_AUTOMATIC);
1992                 gtk_container_add (GTK_CONTAINER (choice), tree_view);
1993                 gtk_widget_show (tree_view);
1994
1995                 g_signal_connect (selection, "changed",
1996                                   G_CALLBACK (ev_view_form_field_choice_changed),
1997                                   field);
1998                 g_signal_connect_after (selection, "changed",
1999                                         G_CALLBACK (ev_view_form_field_destroy),
2000                                         view);
2001         } else if (field_choice->is_editable) { /* ComboBoxEntry */
2002                 gchar *text;
2003
2004                 choice = gtk_combo_box_entry_new_with_model (model, 0);
2005                 text = ev_document_forms_form_field_choice_get_text (EV_DOCUMENT_FORMS (view->document), field);
2006                 if (text) {
2007                         gtk_entry_set_text (GTK_ENTRY (gtk_bin_get_child (GTK_BIN (choice))), text);
2008                         g_free (text);
2009                 }
2010
2011                 g_signal_connect (choice, "changed",
2012                                   G_CALLBACK (ev_view_form_field_choice_changed),
2013                                   field);
2014                 g_signal_connect_after (GTK_BIN(choice)->child, "activate",
2015                                         G_CALLBACK (ev_view_form_field_destroy),
2016                                         view);
2017         } else { /* ComboBoxText */
2018                 GtkCellRenderer *renderer;
2019
2020                 choice = gtk_combo_box_new_with_model (model);
2021                 renderer = gtk_cell_renderer_text_new ();
2022                 gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (choice),
2023                                             renderer, TRUE);
2024                 gtk_cell_layout_set_attributes (GTK_CELL_LAYOUT (choice),
2025                                                 renderer,
2026                                                 "text", 0,
2027                                                 NULL);
2028                 gtk_combo_box_set_active (GTK_COMBO_BOX (choice), selected_item);
2029                 gtk_combo_box_popup (GTK_COMBO_BOX (choice));
2030
2031                 g_signal_connect (choice, "changed",
2032                                   G_CALLBACK (ev_view_form_field_choice_changed),
2033                                   field);
2034                 g_signal_connect_after (choice, "changed",
2035                                         G_CALLBACK (ev_view_form_field_destroy),
2036                                         view);
2037         }
2038
2039         g_object_unref (model);
2040
2041         g_object_weak_ref (G_OBJECT (choice),
2042                            (GWeakNotify)ev_view_form_field_choice_save,
2043                            view);
2044
2045         return choice;
2046 }
2047
2048 static void
2049 ev_view_handle_form_field (EvView      *view,
2050                            EvFormField *field,
2051                            gdouble      x,
2052                            gdouble      y)
2053 {
2054         GtkWidget   *field_widget = NULL;
2055         GList       *form_field_mapping;
2056         GdkRectangle view_area;
2057
2058         if (field->is_read_only)
2059                 return;
2060
2061         if (EV_IS_FORM_FIELD_BUTTON (field)) {
2062                 field_widget = ev_view_form_field_button_create_widget (view, field);
2063         } else if (EV_IS_FORM_FIELD_TEXT (field)) {
2064                 field_widget = ev_view_form_field_text_create_widget (view, field);
2065         } else if (EV_IS_FORM_FIELD_CHOICE (field)) {
2066                 field_widget = ev_view_form_field_choice_create_widget (view, field);
2067         } else if (EV_IS_FORM_FIELD_SIGNATURE (field)) {
2068                 /* TODO */
2069         }
2070
2071         /* Form field doesn't require a widget */
2072         if (!field_widget)
2073                 return;
2074
2075         g_object_set_data_full (G_OBJECT (field_widget), "form-field",
2076                                 g_object_ref (field),
2077                                 (GDestroyNotify)g_object_unref);
2078
2079         form_field_mapping = ev_pixbuf_cache_get_form_field_mapping (view->pixbuf_cache, field->page->index);
2080         ev_view_get_area_from_mapping (view, field->page->index,
2081                                        form_field_mapping,
2082                                        field, &view_area);
2083
2084         gtk_layout_put (GTK_LAYOUT (view), field_widget, view_area.x, view_area.y);
2085         gtk_widget_show (field_widget);
2086         gtk_widget_grab_focus (field_widget);
2087 }
2088
2089 /* Annotations */
2090 static EvViewWindowChild *
2091 ev_view_get_window_child (EvView    *view,
2092                           GtkWidget *window)
2093 {
2094         GList *children = view->window_children;
2095
2096         while (children) {
2097                 EvViewWindowChild *child;
2098
2099                 child = (EvViewWindowChild *)children->data;
2100                 children = children->next;
2101
2102                 if (child->window == window)
2103                         return child;
2104         }
2105
2106         return NULL;
2107 }
2108
2109 static void
2110 ev_view_window_child_move (EvView            *view,
2111                            EvViewWindowChild *child,
2112                            gint               x,
2113                            gint               y)
2114 {
2115         child->x = x;
2116         child->y = y;
2117         gtk_window_move (GTK_WINDOW (child->window),
2118                          MAX (child->parent_x, x),
2119                          MAX (child->parent_y, y));
2120 }
2121
2122 static void
2123 ev_view_window_child_move_with_parent (EvView    *view,
2124                                        GtkWidget *window)
2125 {
2126         EvViewWindowChild *child;
2127         gint               root_x, root_y;
2128
2129         child = ev_view_get_window_child (view, window);
2130         gdk_window_get_origin (gtk_widget_get_window (GTK_WIDGET (view)),
2131                                &root_x, &root_y);
2132         if (root_x != child->parent_x || root_y != child->parent_y) {
2133                 gint dest_x, dest_y;
2134
2135                 dest_x = child->x + (root_x - child->parent_x);
2136                 dest_y = child->y + (root_y - child->parent_y);
2137                 child->parent_x = root_x;
2138                 child->parent_y = root_y;
2139                 ev_view_window_child_move (view, child, dest_x, dest_y);
2140         }
2141
2142         if (child->visible && !GTK_WIDGET_VISIBLE (window))
2143                 gtk_widget_show (window);
2144 }
2145
2146 static void
2147 ev_view_window_child_put (EvView    *view,
2148                           GtkWidget *window,
2149                           guint      page,
2150                           gint       x,
2151                           gint       y,
2152                           gdouble    orig_x,
2153                           gdouble    orig_y)
2154 {
2155         EvViewWindowChild *child;
2156         gint               root_x, root_y;
2157
2158         gdk_window_get_origin (gtk_widget_get_window (GTK_WIDGET (view)),
2159                                &root_x, &root_y);
2160
2161         child = g_new0 (EvViewWindowChild, 1);
2162         child->window = window;
2163         child->page = page;
2164         child->orig_x = orig_x;
2165         child->orig_y = orig_y;
2166         child->parent_x = root_x;
2167         child->parent_y = root_y;
2168         child->visible = ev_annotation_window_is_open (EV_ANNOTATION_WINDOW (window));
2169         ev_view_window_child_move (view, child, x + root_x, y + root_y);
2170
2171         if (child->visible)
2172                 gtk_widget_show (window);
2173         else
2174                 gtk_widget_hide (window);
2175
2176         view->window_children = g_list_append (view->window_children, child);
2177 }
2178
2179 static EvViewWindowChild *
2180 ev_view_find_window_child_for_annot (EvView       *view,
2181                                      guint         page,
2182                                      EvAnnotation *annot)
2183 {
2184         GList *children = view->window_children;
2185
2186         while (children) {
2187                 EvViewWindowChild *child;
2188                 EvAnnotation      *wannot;
2189
2190                 child = (EvViewWindowChild *)children->data;
2191                 children = children->next;
2192
2193                 if (child->page != page)
2194                         continue;
2195
2196                 wannot = ev_annotation_window_get_annotation (EV_ANNOTATION_WINDOW (child->window));
2197                 if (wannot == annot || strcmp (wannot->name, annot->name) == 0)
2198                         return child;
2199         }
2200
2201         return NULL;
2202 }
2203
2204 static void
2205 ev_view_window_children_free (EvView *view)
2206 {
2207         GList *l;
2208
2209         if (!view->window_children)
2210                 return;
2211
2212         for (l = view->window_children; l && l->data; l = g_list_next (l)) {
2213                 EvViewWindowChild *child;
2214
2215                 child = (EvViewWindowChild *)l->data;
2216                 gtk_widget_destroy (GTK_WIDGET (child->window));
2217                 g_free (child);
2218         }
2219         g_list_free (view->window_children);
2220         view->window_children = NULL;
2221         view->window_child_focus = NULL;
2222 }
2223
2224 static void
2225 annotation_window_grab_focus (GtkWidget *widget,
2226                               EvView    *view)
2227 {
2228         if (view->window_child_focus)
2229                 ev_annotation_window_ungrab_focus (EV_ANNOTATION_WINDOW (view->window_child_focus->window));
2230         view->window_child_focus = ev_view_get_window_child (view, widget);
2231 }
2232
2233 static void
2234 annotation_window_closed (EvAnnotationWindow *window,
2235                           EvView             *view)
2236 {
2237         EvViewWindowChild *child;
2238
2239         child = ev_view_get_window_child (view, GTK_WIDGET (window));
2240         child->visible = FALSE;
2241 }
2242
2243 static void
2244 annotation_window_moved (EvAnnotationWindow *window,
2245                          gint                x,
2246                          gint                y,
2247                          EvView             *view)
2248 {
2249         EvViewWindowChild *child;
2250         GdkRectangle       page_area;
2251         GtkBorder          border;
2252         GdkRectangle       view_rect;
2253         EvRectangle        doc_rect;
2254         gint               width, height;
2255
2256         child = ev_view_get_window_child (view, GTK_WIDGET (window));
2257         if (child->x == x && child->y == y)
2258                 return;
2259
2260         child->moved = TRUE;
2261         child->x = x;
2262         child->y = y;
2263
2264         /* Window has been moved by the user,
2265          * we have to set a new origin in doc coords
2266          */
2267         gtk_window_get_size (GTK_WINDOW (window), &width, &height);
2268         view_rect.x = (x - child->parent_x) + view->scroll_x;
2269         view_rect.y = (y - child->parent_y) + view->scroll_y;
2270         view_rect.width = width;
2271         view_rect.height = height;
2272
2273         get_page_extents (view, child->page, &page_area, &border);
2274         view_rect_to_doc_rect (view, &view_rect, &page_area, &doc_rect);
2275         child->orig_x = doc_rect.x1;
2276         child->orig_y = doc_rect.y1;
2277 }
2278
2279 static void
2280 ev_view_annotation_save (EvView       *view,
2281                          EvAnnotation *annot)
2282 {
2283         if (!view->document)
2284                 return;
2285
2286         if (!annot->changed)
2287                 return;
2288
2289         ev_document_annotations_annotation_set_contents (EV_DOCUMENT_ANNOTATIONS (view->document),
2290                                                          annot, annot->contents);
2291         annot->changed = FALSE;
2292 }
2293
2294 static void
2295 show_annotation_windows (EvView *view,
2296                          gint    page)
2297 {
2298         GList     *annots, *l;
2299         GtkWindow *parent;
2300
2301         parent = GTK_WINDOW (gtk_widget_get_toplevel (GTK_WIDGET (view)));
2302
2303         annots = ev_pixbuf_cache_get_annots_mapping (view->pixbuf_cache, page);
2304
2305         for (l = annots; l && l->data; l = g_list_next (l)) {
2306                 EvAnnotation      *annot;
2307                 EvViewWindowChild *child;
2308                 GtkWidget         *window;
2309                 EvRectangle       *doc_rect;
2310                 GdkRectangle       view_rect;
2311
2312                 annot = ((EvMapping *)(l->data))->data;
2313
2314                 if (!EV_IS_ANNOTATION_MARKUP (annot))
2315                         continue;
2316
2317                 if (!ev_annotation_markup_has_popup (EV_ANNOTATION_MARKUP (annot)))
2318                         continue;
2319
2320                 window = g_object_get_data (G_OBJECT (annot), "popup");
2321                 if (window) {
2322                         ev_view_window_child_move_with_parent (view, window);
2323                         continue;
2324                 }
2325
2326                 /* Look if we already have a popup for this annot */
2327                 child = ev_view_find_window_child_for_annot (view, page, annot);
2328                 window = child ? child->window : NULL;
2329                 if (window) {
2330                         ev_annotation_window_set_annotation (EV_ANNOTATION_WINDOW (window), annot);
2331                         g_object_set_data (G_OBJECT (annot), "popup", window);
2332                         ev_view_window_child_move_with_parent (view, window);
2333                 } else {
2334                         window = ev_annotation_window_new (annot, parent);
2335                         g_signal_connect (window, "grab_focus",
2336                                           G_CALLBACK (annotation_window_grab_focus),
2337                                           view);
2338                         g_signal_connect (window, "closed",
2339                                           G_CALLBACK (annotation_window_closed),
2340                                           view);
2341                         g_signal_connect (window, "moved",
2342                                           G_CALLBACK (annotation_window_moved),
2343                                           view);
2344                         g_object_set_data (G_OBJECT (annot), "popup", window);
2345
2346                         doc_rect = (EvRectangle *)ev_annotation_window_get_rectangle (EV_ANNOTATION_WINDOW (window));
2347                         doc_rect_to_view_rect (view, page, doc_rect, &view_rect);
2348                         view_rect.x -= view->scroll_x;
2349                         view_rect.y -= view->scroll_y;
2350
2351                         ev_view_window_child_put (view, window, page,
2352                                                   view_rect.x, view_rect.y,
2353                                                   doc_rect->x1, doc_rect->y1);
2354
2355                         g_object_weak_ref (G_OBJECT (annot),
2356                                            (GWeakNotify)ev_view_annotation_save,
2357                                            view);
2358                 }
2359         }
2360 }
2361
2362 static void
2363 hide_annotation_windows (EvView *view,
2364                          gint    page)
2365 {
2366         GList *annots, *l;
2367
2368         annots = ev_pixbuf_cache_get_annots_mapping (view->pixbuf_cache, page);
2369
2370         for (l = annots; l && l->data; l = g_list_next (l)) {
2371                 EvAnnotation *annot;
2372                 GtkWidget    *window;
2373
2374                 annot = ((EvMapping *)(l->data))->data;
2375
2376                 if (!EV_IS_ANNOTATION_MARKUP (annot))
2377                         continue;
2378
2379                 window = g_object_get_data (G_OBJECT (annot), "popup");
2380                 if (window)
2381                         gtk_widget_hide (window);
2382         }
2383 }
2384
2385 static EvAnnotation *
2386 ev_view_get_annotation_at_location (EvView  *view,
2387                                     gdouble  x,
2388                                     gdouble  y)
2389 {
2390         gint page = -1;
2391         gint x_new = 0, y_new = 0;
2392         GList *annotations_mapping;
2393
2394         if (!EV_IS_DOCUMENT_ANNOTATIONS (view->document))
2395                 return NULL;
2396
2397         if (!get_doc_point_from_location (view, x, y, &page, &x_new, &y_new))
2398                 return NULL;
2399
2400         annotations_mapping = ev_pixbuf_cache_get_annots_mapping (view->pixbuf_cache, page);
2401
2402         if (annotations_mapping)
2403                 return ev_mapping_list_get_data (annotations_mapping, x_new, y_new);
2404         else
2405                 return NULL;
2406 }
2407
2408 static void
2409 ev_view_handle_annotation (EvView       *view,
2410                            EvAnnotation *annot,
2411                            gdouble       x,
2412                            gdouble       y)
2413 {
2414         if (EV_IS_ANNOTATION_MARKUP (annot)) {
2415                 GtkWidget *window;
2416
2417                 window = g_object_get_data (G_OBJECT (annot), "popup");
2418                 if (window) {
2419                         EvViewWindowChild *child;
2420
2421                         child = ev_view_get_window_child (view, window);
2422                         if (!child->visible) {
2423                                 child->visible = TRUE;
2424                                 ev_view_window_child_move (view, child, child->x, child->y);
2425                                 gtk_widget_show (window);
2426                         }
2427                 }
2428         }
2429 }
2430
2431 /*** GtkWidget implementation ***/
2432
2433 static void
2434 ev_view_size_request_continuous_dual_page (EvView         *view,
2435                                            GtkRequisition *requisition)
2436 {
2437         int max_width;
2438         gint n_pages;
2439         GtkBorder border;
2440
2441         ev_page_cache_get_max_width (view->page_cache, view->rotation,
2442                                      view->scale, &max_width);
2443         compute_border (view, max_width, max_width, &border);
2444
2445         n_pages = ev_page_cache_get_n_pages (view->page_cache) + 1;
2446
2447         requisition->width = (max_width + border.left + border.right) * 2 + (view->spacing * 3);
2448         get_page_y_offset (view, n_pages, view->scale, &requisition->height);
2449
2450         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
2451                 requisition->width = 1;
2452         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
2453                 requisition->width = 1;
2454                 /* FIXME: This could actually be set on one page docs or docs
2455                  * with a strange aspect ratio. */
2456                 /* requisition->height = 1;*/
2457         }
2458 }
2459
2460 static void
2461 ev_view_size_request_continuous (EvView         *view,
2462                                  GtkRequisition *requisition)
2463 {
2464         int max_width;
2465         int n_pages;
2466         GtkBorder border;
2467
2468
2469         ev_page_cache_get_max_width (view->page_cache, view->rotation,
2470                                      view->scale, &max_width);
2471         n_pages = ev_page_cache_get_n_pages (view->page_cache);
2472         compute_border (view, max_width, max_width, &border);
2473
2474         requisition->width = max_width + (view->spacing * 2) + border.left + border.right;
2475         get_page_y_offset (view, n_pages, view->scale, &requisition->height);
2476
2477         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
2478                 requisition->width = 1;
2479         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
2480                 requisition->width = 1;
2481                 /* FIXME: This could actually be set on one page docs or docs
2482                  * with a strange aspect ratio. */
2483                 /* requisition->height = 1;*/
2484         }
2485 }
2486
2487 static void
2488 ev_view_size_request_dual_page (EvView         *view,
2489                                 GtkRequisition *requisition)
2490 {
2491         GtkBorder border;
2492         gint width, height;
2493
2494         /* Find the largest of the two. */
2495         ev_page_cache_get_size (view->page_cache,
2496                                 view->current_page,
2497                                 view->rotation,
2498                                 view->scale,
2499                                 &width, &height);
2500         if (view->current_page + 1 < ev_page_cache_get_n_pages (view->page_cache)) {
2501                 gint width_2, height_2;
2502                 ev_page_cache_get_size (view->page_cache,
2503                                         view->current_page + 1,
2504                                         view->rotation,
2505                                         view->scale,
2506                                         &width_2, &height_2);
2507                 if (width_2 > width) {
2508                         width = width_2;
2509                         height = height_2;
2510                 }
2511         }
2512         compute_border (view, width, height, &border);
2513
2514         requisition->width = ((width + border.left + border.right) * 2) +
2515                 (view->spacing * 3);
2516         requisition->height = (height + border.top + border.bottom) +
2517                 (view->spacing * 2);
2518
2519         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
2520                 requisition->width = 1;
2521         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
2522                 requisition->width = 1;
2523                 requisition->height = 1;
2524         }
2525 }
2526
2527 static void
2528 ev_view_size_request_single_page (EvView         *view,
2529                                   GtkRequisition *requisition)
2530 {
2531         GtkBorder border;
2532         gint width, height;
2533
2534         ev_page_cache_get_size (view->page_cache,
2535                                 view->current_page,
2536                                 view->rotation,
2537                                 view->scale,
2538                                 &width, &height);
2539         compute_border (view, width, height, &border);
2540
2541         requisition->width = width + border.left + border.right + (2 * view->spacing);
2542         requisition->height = height + border.top + border.bottom + (2 * view->spacing);
2543
2544         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
2545                 requisition->width = 1;
2546                 requisition->height = height + border.top + border.bottom + (2 * view->spacing);
2547         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
2548                 requisition->width = 1;
2549                 requisition->height = 1;
2550         }
2551 }
2552
2553 static void
2554 ev_view_size_request (GtkWidget      *widget,
2555                       GtkRequisition *requisition)
2556 {
2557         EvView *view = EV_VIEW (widget);
2558
2559         if (view->document == NULL) {
2560                 requisition->width = 1;
2561                 requisition->height = 1;
2562                 return;
2563         }
2564
2565         if (view->presentation) {
2566                 requisition->width = 1;
2567                 requisition->height = 1;
2568                 return;
2569         }
2570
2571         if (view->continuous && view->dual_page)
2572                 ev_view_size_request_continuous_dual_page (view, requisition);
2573         else if (view->continuous)
2574                 ev_view_size_request_continuous (view, requisition);
2575         else if (view->dual_page)
2576                 ev_view_size_request_dual_page (view, requisition);
2577         else
2578                 ev_view_size_request_single_page (view, requisition);
2579 }
2580
2581 static void
2582 ev_view_size_allocate (GtkWidget      *widget,
2583                        GtkAllocation  *allocation)
2584 {
2585         EvView *view = EV_VIEW (widget);
2586         GList  *children, *l;
2587         gint    root_x, root_y;
2588
2589         GTK_WIDGET_CLASS (ev_view_parent_class)->size_allocate (widget, allocation);
2590
2591         if (view->sizing_mode == EV_SIZING_FIT_WIDTH ||
2592             view->sizing_mode == EV_SIZING_BEST_FIT) {
2593                 g_signal_emit (view, signals[SIGNAL_ZOOM_INVALID], 0);
2594                 ev_view_size_request (widget, &widget->requisition);
2595         }
2596
2597         view_set_adjustment_values (view, GTK_ORIENTATION_HORIZONTAL);
2598         view_set_adjustment_values (view, GTK_ORIENTATION_VERTICAL);
2599
2600         if (view->document)
2601                 view_update_range_and_current_page (view);
2602
2603         view->pending_scroll = SCROLL_TO_KEEP_POSITION;
2604         view->pending_resize = FALSE;
2605
2606         children = gtk_container_get_children (GTK_CONTAINER (widget));
2607         for (l = children; l && l->data; l = g_list_next (l)) {
2608                 EvFormField   *field;
2609                 GdkRectangle   view_area;
2610                 GList         *form_field_mapping;
2611                 GtkAllocation  child_allocation;
2612                 GtkRequisition child_requisition;
2613                 GtkWidget     *child = (GtkWidget *)l->data;
2614
2615                 field = g_object_get_data (G_OBJECT (child), "form-field");
2616                 if (!field)
2617                         continue;
2618
2619                 form_field_mapping = ev_pixbuf_cache_get_form_field_mapping (view->pixbuf_cache,
2620                                                                              field->page->index);
2621                 ev_view_get_area_from_mapping (view, field->page->index,
2622                                                form_field_mapping,
2623                                                field, &view_area);
2624
2625                 gtk_widget_size_request (child, &child_requisition);
2626                 if (child_requisition.width != view_area.width ||
2627                     child_requisition.height != view_area.height)
2628                         gtk_widget_set_size_request (child, view_area.width, view_area.height);
2629
2630                 gtk_container_child_get (GTK_CONTAINER (widget),
2631                                          child,
2632                                          "x", &child_allocation.x,
2633                                          "y", &child_allocation.y,
2634                                          NULL);
2635                 if (child_allocation.x != view_area.x ||
2636                     child_allocation.y != view_area.y) {
2637                         gtk_layout_move (GTK_LAYOUT (widget), child, view_area.x, view_area.y);
2638                 }
2639         }
2640         g_list_free (children);
2641
2642         if (view->window_children)
2643                 gdk_window_get_origin (gtk_widget_get_window (GTK_WIDGET (view)),
2644                                        &root_x, &root_y);
2645
2646         for (l = view->window_children; l && l->data; l = g_list_next (l)) {
2647                 EvViewWindowChild *child;
2648                 EvRectangle        doc_rect;
2649                 GdkRectangle       view_rect;
2650
2651                 child = (EvViewWindowChild *)l->data;
2652
2653                 doc_rect = *ev_annotation_window_get_rectangle (EV_ANNOTATION_WINDOW (child->window));
2654                 if (child->moved) {
2655                         doc_rect.x1 = child->orig_x;
2656                         doc_rect.y1 = child->orig_y;
2657                 }
2658                 doc_rect_to_view_rect (view, child->page, &doc_rect, &view_rect);
2659                 view_rect.x -= view->scroll_x;
2660                 view_rect.y -= view->scroll_y;
2661
2662                 if (view_rect.x != child->orig_x || view_rect.y != child->orig_y) {
2663                         child->parent_x = root_x;
2664                         child->parent_y = root_y;
2665                         ev_view_window_child_move (view, child, view_rect.x + root_x, view_rect.y + root_y);
2666                 }
2667         }
2668 }
2669
2670 static void
2671 ev_view_realize (GtkWidget *widget)
2672 {
2673         EvView *view = EV_VIEW (widget);
2674
2675         if (GTK_WIDGET_CLASS (ev_view_parent_class)->realize)
2676                 (* GTK_WIDGET_CLASS (ev_view_parent_class)->realize) (widget);
2677
2678         gdk_window_set_events (view->layout.bin_window,
2679                                (gdk_window_get_events (view->layout.bin_window) |
2680                                 GDK_EXPOSURE_MASK |
2681                                 GDK_BUTTON_PRESS_MASK |
2682                                 GDK_BUTTON_RELEASE_MASK |
2683                                 GDK_SCROLL_MASK |
2684                                 GDK_KEY_PRESS_MASK |
2685                                 GDK_POINTER_MOTION_MASK |
2686                                 GDK_POINTER_MOTION_HINT_MASK |
2687                                 GDK_ENTER_NOTIFY_MASK |
2688                                 GDK_LEAVE_NOTIFY_MASK));
2689
2690         if (view->presentation)
2691                 gdk_window_set_background (view->layout.bin_window, &widget->style->black);
2692         else
2693                 gdk_window_set_background (view->layout.bin_window, &widget->style->mid [GTK_STATE_NORMAL]);
2694 }
2695
2696 static gboolean
2697 ev_view_scroll_event (GtkWidget *widget, GdkEventScroll *event)
2698 {
2699         EvView *view = EV_VIEW (widget);
2700         guint state;
2701
2702         state = event->state & gtk_accelerator_get_default_mod_mask ();
2703
2704         if (state == GDK_CONTROL_MASK && view->presentation == FALSE) {
2705                 ev_view_set_sizing_mode (view, EV_SIZING_FREE);
2706
2707                 if (event->direction == GDK_SCROLL_UP ||
2708                     event->direction == GDK_SCROLL_LEFT) {
2709                         if (ev_view_can_zoom_in (view)) {
2710                                 ev_view_zoom_in (view);
2711                         }
2712                 } else {
2713                         if (ev_view_can_zoom_out (view)) {
2714                                 ev_view_zoom_out (view);
2715                         }
2716                 }
2717
2718                 return TRUE;
2719         }
2720
2721         view->jump_to_find_result = FALSE;
2722
2723         /* Shift+Wheel scrolls the in the perpendicular direction */
2724         if (state & GDK_SHIFT_MASK) {
2725                 if (event->direction == GDK_SCROLL_UP)
2726                         event->direction = GDK_SCROLL_LEFT;
2727                 else if (event->direction == GDK_SCROLL_LEFT)
2728                         event->direction = GDK_SCROLL_UP;
2729                 else if (event->direction == GDK_SCROLL_DOWN)
2730                         event->direction = GDK_SCROLL_RIGHT;
2731                 else if (event->direction == GDK_SCROLL_RIGHT)
2732                         event->direction = GDK_SCROLL_DOWN;
2733
2734                 event->state &= ~GDK_SHIFT_MASK;
2735                 state &= ~GDK_SHIFT_MASK;
2736         }
2737
2738         if (state == 0 &&
2739             (view->presentation ||
2740              (view->sizing_mode == EV_SIZING_BEST_FIT && !view->continuous))) {
2741                 switch (event->direction) {
2742                         case GDK_SCROLL_DOWN:
2743                         case GDK_SCROLL_RIGHT:
2744                                 ev_view_next_page (view);
2745                                 break;
2746                         case GDK_SCROLL_UP:
2747                         case GDK_SCROLL_LEFT:
2748                                 ev_view_previous_page (view);
2749                                 break;
2750                 }
2751
2752                 return TRUE;
2753         }
2754
2755         return FALSE;
2756 }
2757
2758 static EvViewSelection *
2759 find_selection_for_page (EvView *view,
2760                          gint    page)
2761 {
2762         GList *list;
2763
2764         for (list = view->selection_info.selections; list != NULL; list = list->next) {
2765                 EvViewSelection *selection;
2766
2767                 selection = (EvViewSelection *) list->data;
2768
2769                 if (selection->page == page)
2770                         return selection;
2771         }
2772
2773         return NULL;
2774 }
2775
2776 static void
2777 draw_end_presentation_page (EvView       *view,
2778                             GdkRectangle *page_area)
2779 {
2780         PangoLayout *layout;
2781         PangoFontDescription *font_desc;
2782         gchar *markup;
2783         const gchar *text = _("End of presentation. Press Escape to exit.");
2784
2785         if (view->presentation_state != EV_PRESENTATION_END)
2786                 return;
2787
2788         layout = gtk_widget_create_pango_layout (GTK_WIDGET (view), NULL);
2789         markup = g_strdup_printf ("<span foreground=\"white\">%s</span>", text);
2790         pango_layout_set_markup (layout, markup, -1);
2791         g_free (markup);
2792
2793         font_desc = pango_font_description_new ();
2794         pango_font_description_set_size (font_desc, 16 * PANGO_SCALE);
2795         pango_layout_set_font_description (layout, font_desc);
2796
2797         gtk_paint_layout (GTK_WIDGET (view)->style,
2798                           view->layout.bin_window,
2799                           GTK_WIDGET_STATE (view),
2800                           FALSE,
2801                           page_area,
2802                           GTK_WIDGET (view),
2803                           NULL,
2804                           page_area->x + 15,
2805                           page_area->y + 15,
2806                           layout);
2807
2808         pango_font_description_free (font_desc);
2809         g_object_unref (layout);
2810 }
2811
2812 static gboolean
2813 ev_view_expose_event (GtkWidget      *widget,
2814                       GdkEventExpose *event)
2815 {
2816         EvView  *view = EV_VIEW (widget);
2817         cairo_t *cr;
2818         gint     i;
2819
2820         if (view->animation) {
2821                 if (ev_transition_animation_ready (view->animation)) {
2822                         GdkRectangle page_area;
2823                         GtkBorder    border;
2824
2825                         if (get_page_extents (view, view->current_page, &page_area, &border)) {
2826                                 cr = gdk_cairo_create (view->layout.bin_window);
2827
2828                                 /* normalize to x=0, y=0 */
2829                                 cairo_translate (cr, page_area.x, page_area.y);
2830                                 page_area.x = page_area.y = 0;
2831
2832                                 ev_transition_animation_paint (view->animation, cr, page_area);
2833                                 cairo_destroy (cr);
2834                         }
2835                 }
2836
2837                 return TRUE;
2838         }
2839
2840         if (view->presentation) {
2841                 switch (view->presentation_state) {
2842                         case EV_PRESENTATION_END: {
2843                                 GdkRectangle area = {0};
2844
2845                                 area.width = widget->allocation.width;
2846                                 area.height = widget->allocation.height;
2847
2848                                 draw_end_presentation_page (view, &area);
2849                         }
2850                                 return FALSE;
2851                         case EV_PRESENTATION_BLACK:
2852                         case EV_PRESENTATION_WHITE:
2853                                 return FALSE;
2854                         case EV_PRESENTATION_NORMAL:
2855                         default:
2856                                 break;
2857                 }
2858         } else if (view->loading) {
2859                 GdkRectangle area = {0};
2860
2861                 area.width = widget->allocation.width;
2862                 area.height = widget->allocation.height;
2863
2864                 draw_loading_text (view,
2865                                    &area,
2866                                    &(event->area));
2867         }
2868
2869         if (view->document == NULL)
2870                 return FALSE;
2871
2872         cr = gdk_cairo_create (view->layout.bin_window);
2873
2874         for (i = view->start_page; i <= view->end_page; i++) {
2875                 GdkRectangle page_area;
2876                 GtkBorder border;
2877                 gboolean page_ready = TRUE;
2878
2879                 if (!get_page_extents (view, i, &page_area, &border))
2880                         continue;
2881
2882                 page_area.x -= view->scroll_x;
2883                 page_area.y -= view->scroll_y;
2884
2885                 draw_one_page (view, i, cr, &page_area, &border, &(event->area), &page_ready);
2886
2887                 if (page_ready && view->find_pages && view->highlight_find_results)
2888                         highlight_find_results (view, i);
2889                 if (page_ready && EV_IS_DOCUMENT_ANNOTATIONS (view->document))
2890                         show_annotation_windows (view, i);
2891         }
2892
2893         cairo_destroy (cr);
2894
2895         if (GTK_WIDGET_CLASS (ev_view_parent_class)->expose_event)
2896                 (* GTK_WIDGET_CLASS (ev_view_parent_class)->expose_event) (widget, event);
2897
2898         return FALSE;
2899 }
2900
2901 static gboolean
2902 ev_view_do_popup_menu (EvView *view,
2903                        gdouble x,
2904                        gdouble y)
2905 {
2906         EvLink  *link;
2907         EvImage *image;
2908
2909         image = ev_view_get_image_at_location (view, x, y);
2910         if (image) {
2911                 g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, image);
2912                 return TRUE;
2913         }
2914
2915         link = ev_view_get_link_at_location (view, x, y);
2916         if (link) {
2917                 g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, link);
2918                 return TRUE;
2919         }
2920
2921         g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, NULL);
2922
2923         return TRUE;
2924 }
2925
2926 static gboolean
2927 ev_view_popup_menu (GtkWidget *widget)
2928 {
2929         gint x, y;
2930
2931         gtk_widget_get_pointer (widget, &x, &y);
2932         return ev_view_do_popup_menu (EV_VIEW (widget), x, y);
2933 }
2934
2935 static void
2936 get_link_area (EvView       *view,
2937                gint          x,
2938                gint          y,
2939                EvLink       *link,
2940                GdkRectangle *area)
2941 {
2942         GList *link_mapping;
2943         gint   page;
2944         gint   x_offset = 0, y_offset = 0;
2945
2946         x += view->scroll_x;
2947         y += view->scroll_y;
2948
2949         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
2950
2951         link_mapping = ev_pixbuf_cache_get_link_mapping (view->pixbuf_cache, page);
2952         ev_view_get_area_from_mapping (view, page,
2953                                        link_mapping,
2954                                        link, area);
2955 }
2956
2957 static void
2958 get_annot_area (EvView       *view,
2959                gint          x,
2960                gint          y,
2961                EvAnnotation *annot,
2962                GdkRectangle *area)
2963 {
2964         GList *annots_mapping;
2965         gint   page;
2966         gint   x_offset = 0, y_offset = 0;
2967
2968         x += view->scroll_x;
2969         y += view->scroll_y;
2970
2971         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
2972
2973         annots_mapping = ev_pixbuf_cache_get_annots_mapping (view->pixbuf_cache, page);
2974         ev_view_get_area_from_mapping (view, page,
2975                                        annots_mapping,
2976                                        annot, area);
2977 }
2978
2979 static gboolean
2980 ev_view_query_tooltip (GtkWidget  *widget,
2981                        gint        x,
2982                        gint        y,
2983                        gboolean    keyboard_tip,
2984                        GtkTooltip *tooltip)
2985 {
2986         EvView       *view = EV_VIEW (widget);
2987         EvLink       *link;
2988         EvAnnotation *annot;
2989         gchar        *text;
2990
2991         annot = ev_view_get_annotation_at_location (view, x, y);
2992         if (annot && annot->contents) {
2993                 GdkRectangle annot_area;
2994
2995                 get_annot_area (view, x, y, annot, &annot_area);
2996                 gtk_tooltip_set_text (tooltip, annot->contents);
2997                 gtk_tooltip_set_tip_area (tooltip, &annot_area);
2998
2999                 return TRUE;
3000         }
3001
3002         link = ev_view_get_link_at_location (view, x, y);
3003         if (!link)
3004                 return FALSE;
3005
3006         text = tip_from_link (view, link);
3007         if (text && g_utf8_validate (text, -1, NULL)) {
3008                 GdkRectangle link_area;
3009
3010                 get_link_area (view, x, y, link, &link_area);
3011                 gtk_tooltip_set_text (tooltip, text);
3012                 gtk_tooltip_set_tip_area (tooltip, &link_area);
3013         }
3014         g_free (text);
3015
3016         return TRUE;
3017 }
3018
3019 static void
3020 start_selection_for_event (EvView         *view,
3021                            GdkEventButton *event)
3022 {
3023         clear_selection (view);
3024
3025         view->selection_info.start.x = event->x + view->scroll_x;
3026         view->selection_info.start.y = event->y + view->scroll_y;
3027
3028         switch (event->type) {
3029                 case GDK_2BUTTON_PRESS:
3030                         view->selection_info.style = EV_SELECTION_STYLE_WORD;
3031                         break;
3032                 case GDK_3BUTTON_PRESS:
3033                         view->selection_info.style = EV_SELECTION_STYLE_LINE;
3034                         break;
3035                 default:
3036                         view->selection_info.style = EV_SELECTION_STYLE_GLYPH;
3037                         return;
3038         }
3039
3040         /* In case of WORD or LINE, compute selections now */
3041         compute_selections (view,
3042                             view->selection_info.style,
3043                             &(view->selection_info.start),
3044                             &(view->selection_info.start));
3045 }
3046
3047 static gboolean
3048 ev_view_button_press_event (GtkWidget      *widget,
3049                             GdkEventButton *event)
3050 {
3051         EvView *view = EV_VIEW (widget);
3052
3053         if (!view->document)
3054                 return FALSE;
3055
3056         if (!GTK_WIDGET_HAS_FOCUS (widget)) {
3057                 gtk_widget_grab_focus (widget);
3058         }
3059
3060         if (view->window_child_focus) {
3061                 EvAnnotationWindow *window;
3062                 EvAnnotation       *annot;
3063
3064                 window = EV_ANNOTATION_WINDOW (view->window_child_focus->window);
3065                 annot = ev_annotation_window_get_annotation (window);
3066                 ev_annotation_window_ungrab_focus (window);
3067                 ev_view_annotation_save (view, annot);
3068                 view->window_child_focus = NULL;
3069         }
3070
3071         view->pressed_button = event->button;
3072         view->selection_info.in_drag = FALSE;
3073
3074         if (view->scroll_info.autoscrolling)
3075                 return TRUE;
3076
3077         switch (event->button) {
3078                 case 1: {
3079                         EvImage *image;
3080                         EvAnnotation *annot;
3081                         EvFormField *field;
3082
3083                         if (EV_IS_SELECTION (view->document) && view->selection_info.selections) {
3084                                 if (event->type == GDK_3BUTTON_PRESS) {
3085                                         start_selection_for_event (view, event);
3086                                 } else if (location_in_selected_text (view,
3087                                                                event->x + view->scroll_x,
3088                                                                event->y + view->scroll_y)) {
3089                                         view->selection_info.in_drag = TRUE;
3090                                 } else {
3091                                         start_selection_for_event (view, event);
3092                                 }
3093
3094                                 gtk_widget_queue_draw (widget);
3095                         } else if ((annot = ev_view_get_annotation_at_location (view, event->x, event->y))) {
3096                                 ev_view_handle_annotation (view, annot, event->x, event->y);
3097                         } else if ((field = ev_view_get_form_field_at_location (view, event->x, event->y))) {
3098                                 ev_view_remove_all (view);
3099                                 ev_view_handle_form_field (view, field, event->x, event->y);
3100                         } else if (!location_in_text (view, event->x + view->scroll_x, event->y + view->scroll_y) &&
3101                                    (image = ev_view_get_image_at_location (view, event->x, event->y))) {
3102                                 if (view->image_dnd_info.image)
3103                                         g_object_unref (view->image_dnd_info.image);
3104                                 view->image_dnd_info.image = g_object_ref (image);
3105                                 view->image_dnd_info.in_drag = TRUE;
3106
3107                                 view->image_dnd_info.start.x = event->x + view->scroll_x;
3108                                 view->image_dnd_info.start.y = event->y + view->scroll_y;
3109                         } else {
3110                                 ev_view_remove_all (view);
3111
3112                                 if (EV_IS_SELECTION (view->document))
3113                                         start_selection_for_event (view, event);
3114                         }
3115                 }
3116                         return TRUE;
3117                 case 2:
3118                         /* use root coordinates as reference point because
3119                          * scrolling changes window relative coordinates */
3120                         view->drag_info.start.x = event->x_root;
3121                         view->drag_info.start.y = event->y_root;
3122                         view->drag_info.hadj = gtk_adjustment_get_value (view->hadjustment);
3123                         view->drag_info.vadj = gtk_adjustment_get_value (view->vadjustment);
3124
3125                         ev_view_set_cursor (view, EV_VIEW_CURSOR_DRAG);
3126
3127                         return TRUE;
3128                 case 3:
3129                         view->scroll_info.start_y = event->y;
3130                         return ev_view_do_popup_menu (view, event->x, event->y);
3131         }
3132
3133         return FALSE;
3134 }
3135
3136 static void
3137 ev_view_remove_all (EvView *view)
3138 {
3139         GList *children, *child;
3140
3141         children = gtk_container_get_children (GTK_CONTAINER (view));
3142         for (child = children; child && child->data; child = g_list_next (child)) {
3143                 gtk_container_remove (GTK_CONTAINER (view),
3144                                       GTK_WIDGET (child->data));
3145         }
3146         g_list_free (children);
3147 }
3148
3149 /*** Drag and Drop ***/
3150 static void
3151 ev_view_drag_data_get (GtkWidget        *widget,
3152                        GdkDragContext   *context,
3153                        GtkSelectionData *selection_data,
3154                        guint             info,
3155                        guint             time)
3156 {
3157         EvView *view = EV_VIEW (widget);
3158
3159         switch (info) {
3160                 case TARGET_DND_TEXT:
3161                         if (EV_IS_SELECTION (view->document) &&
3162                             view->selection_info.selections) {
3163                                 gchar *text;
3164
3165                                 text = get_selected_text (view);
3166                                 gtk_selection_data_set_text (selection_data,
3167                                                              text,
3168                                                              strlen (text));
3169                                 g_free (text);
3170                         }
3171                         break;
3172                 case TARGET_DND_IMAGE:
3173                         if (view->image_dnd_info.image) {
3174                                 GdkPixbuf *pixbuf;
3175
3176                                 ev_document_doc_mutex_lock ();
3177                                 pixbuf = ev_document_images_get_image (EV_DOCUMENT_IMAGES (view->document),
3178                                                                        view->image_dnd_info.image);
3179                                 ev_document_doc_mutex_unlock ();
3180
3181                                 gtk_selection_data_set_pixbuf (selection_data, pixbuf);
3182                                 g_object_unref (pixbuf);
3183                         }
3184                         break;
3185                 case TARGET_DND_URI:
3186                         if (view->image_dnd_info.image) {
3187                                 GdkPixbuf   *pixbuf;
3188                                 const gchar *tmp_uri;
3189                                 gchar       *uris[2];
3190
3191                                 ev_document_doc_mutex_lock ();
3192                                 pixbuf = ev_document_images_get_image (EV_DOCUMENT_IMAGES (view->document),
3193                                                                        view->image_dnd_info.image);
3194                                 ev_document_doc_mutex_unlock ();
3195
3196                                 tmp_uri = ev_image_save_tmp (view->image_dnd_info.image, pixbuf);
3197                                 g_object_unref (pixbuf);
3198
3199                                 uris[0] = (gchar *)tmp_uri;
3200                                 uris[1] = NULL;
3201                                 gtk_selection_data_set_uris (selection_data, uris);
3202                         }
3203         }
3204 }
3205
3206 static gboolean
3207 ev_view_drag_motion (GtkWidget      *widget,
3208                      GdkDragContext *context,
3209                      gint            x,
3210                      gint            y,
3211                      guint           time)
3212 {
3213         if (gtk_drag_get_source_widget (context) == widget)
3214                 gdk_drag_status (context, 0, time);
3215         else
3216                 gdk_drag_status (context, context->suggested_action, time);
3217
3218         return TRUE;
3219 }
3220
3221 static gboolean
3222 selection_update_idle_cb (EvView *view)
3223 {
3224         compute_selections (view,
3225                             view->selection_info.style,
3226                             &view->selection_info.start,
3227                             &view->motion);
3228         view->selection_update_id = 0;
3229         return FALSE;
3230 }
3231
3232 static gboolean
3233 selection_scroll_timeout_cb (EvView *view)
3234 {
3235         gint x, y, shift = 0;
3236         GtkWidget *widget = GTK_WIDGET (view);
3237
3238         gtk_widget_get_pointer (widget, &x, &y);
3239
3240         if (y > widget->allocation.height) {
3241                 shift = (y - widget->allocation.height) / 2;
3242         } else if (y < 0) {
3243                 shift = y / 2;
3244         }
3245
3246         if (shift)
3247                 gtk_adjustment_set_value (view->vadjustment,
3248                                           CLAMP (view->vadjustment->value + shift,
3249                                           view->vadjustment->lower,
3250                                           view->vadjustment->upper -
3251                                           view->vadjustment->page_size));
3252
3253         if (x > widget->allocation.width) {
3254                 shift = (x - widget->allocation.width) / 2;
3255         } else if (x < 0) {
3256                 shift = x / 2;
3257         }
3258
3259         if (shift)
3260                 gtk_adjustment_set_value (view->hadjustment,
3261                                           CLAMP (view->hadjustment->value + shift,
3262                                           view->hadjustment->lower,
3263                                           view->hadjustment->upper -
3264                                           view->hadjustment->page_size));
3265
3266         return TRUE;
3267 }
3268
3269 static gboolean
3270 ev_view_drag_update_momentum (EvView *view)
3271 {
3272         int i;
3273         if (!view->drag_info.in_drag)
3274                 return FALSE;
3275
3276         for (i = DRAG_HISTORY - 1; i > 0; i--) {
3277                 view->drag_info.buffer[i].x = view->drag_info.buffer[i-1].x;
3278                 view->drag_info.buffer[i].y = view->drag_info.buffer[i-1].y;
3279         }
3280
3281         /* Momentum is a moving average of 10ms granularity over
3282          * the last 100ms with each 10ms stored in buffer.
3283          */
3284
3285         view->drag_info.momentum.x = (view->drag_info.buffer[DRAG_HISTORY - 1].x - view->drag_info.buffer[0].x);
3286         view->drag_info.momentum.y = (view->drag_info.buffer[DRAG_HISTORY - 1].y - view->drag_info.buffer[0].y);
3287
3288         return TRUE;
3289 }
3290
3291 static gboolean
3292 ev_view_scroll_drag_release (EvView *view)
3293 {
3294         gdouble dhadj_value, dvadj_value;
3295         gdouble oldhadjustment, oldvadjustment;
3296
3297         view->drag_info.momentum.x /= 1.2;
3298         view->drag_info.momentum.y /= 1.2; /* Alter these constants to change "friction" */
3299
3300         dhadj_value = view->hadjustment->page_size *
3301                       (gdouble)view->drag_info.momentum.x / GTK_WIDGET (view)->allocation.width;
3302         dvadj_value = view->vadjustment->page_size *
3303                       (gdouble)view->drag_info.momentum.y / GTK_WIDGET (view)->allocation.height;
3304
3305         oldhadjustment = gtk_adjustment_get_value (view->hadjustment);
3306         oldvadjustment = gtk_adjustment_get_value (view->vadjustment);
3307
3308      /* When we reach the edges, we need either to absorb some momentum and bounce by
3309       * multiplying it on -0.5 or stop scrolling by setting momentum to 0. */
3310      if (((oldhadjustment + dhadj_value) > (view->hadjustment->upper - view->hadjustment->page_size)) ||
3311            ((oldhadjustment + dhadj_value) < 0))
3312                 view->drag_info.momentum.x = 0;
3313         if (((oldvadjustment + dvadj_value) > (view->vadjustment->upper - view->vadjustment->page_size)) ||
3314            ((oldvadjustment + dvadj_value) < 0))
3315                 view->drag_info.momentum.y = 0;
3316
3317         gtk_adjustment_set_value (view->hadjustment,
3318                                 MIN (oldhadjustment + dhadj_value,
3319                                 view->hadjustment->upper - view->hadjustment->page_size));
3320         gtk_adjustment_set_value (view->vadjustment,
3321                                 MIN (oldvadjustment + dvadj_value,
3322                                 view->vadjustment->upper - view->vadjustment->page_size));
3323
3324         if (((view->drag_info.momentum.x < 1) && (view->drag_info.momentum.x > -1)) &&
3325            ((view->drag_info.momentum.y < 1) && (view->drag_info.momentum.y > -1)))
3326                 return FALSE;
3327         else
3328                 return TRUE;
3329 }
3330
3331 static gboolean
3332 ev_view_motion_notify_event (GtkWidget      *widget,
3333                              GdkEventMotion *event)
3334 {
3335         EvView *view = EV_VIEW (widget);
3336         gint x, y;
3337
3338         if (!view->document)
3339                 return FALSE;
3340
3341
3342         if (event->is_hint || event->window != view->layout.bin_window) {
3343             gtk_widget_get_pointer (widget, &x, &y);
3344         } else {
3345             x = event->x;
3346             y = event->y;
3347         }
3348
3349         if (view->scroll_info.autoscrolling) {
3350                 view->scroll_info.last_y = y;
3351                 return TRUE;
3352         }
3353
3354         if (view->selection_info.in_drag) {
3355                 if (gtk_drag_check_threshold (widget,
3356                                               view->selection_info.start.x,
3357                                               view->selection_info.start.y,
3358                                               x, y)) {
3359                         GtkTargetList *target_list = gtk_target_list_new (NULL, 0);
3360
3361                         gtk_target_list_add_text_targets (target_list, TARGET_DND_TEXT);
3362
3363                         gtk_drag_begin (widget, target_list,
3364                                         GDK_ACTION_COPY,
3365                                         1, (GdkEvent *)event);
3366
3367                         view->selection_info.in_drag = FALSE;
3368
3369                         gtk_target_list_unref (target_list);
3370
3371                         return TRUE;
3372                 }
3373         } else if (view->image_dnd_info.in_drag) {
3374                 if (gtk_drag_check_threshold (widget,
3375                                               view->selection_info.start.x,
3376                                               view->selection_info.start.y,
3377                                               x, y)) {
3378                         GtkTargetList *target_list = gtk_target_list_new (NULL, 0);
3379
3380                         gtk_target_list_add_uri_targets (target_list, TARGET_DND_URI);
3381                         gtk_target_list_add_image_targets (target_list, TARGET_DND_IMAGE, TRUE);
3382
3383                         gtk_drag_begin (widget, target_list,
3384                                         GDK_ACTION_COPY,
3385                                         1, (GdkEvent *)event);
3386
3387                         view->image_dnd_info.in_drag = FALSE;
3388
3389                         gtk_target_list_unref (target_list);
3390
3391                         return TRUE;
3392                 }
3393         }
3394
3395         switch (view->pressed_button) {
3396         case 1:
3397                 /* For the Evince 0.4.x release, we limit selection to un-rotated
3398                  * documents only.
3399                  */
3400                 if (view->rotation != 0)
3401                         return FALSE;
3402
3403                 /* Schedule timeout to scroll during selection and additionally
3404                  * scroll once to allow arbitrary speed. */
3405                 if (!view->selection_scroll_id)
3406                     view->selection_scroll_id = g_timeout_add (SCROLL_TIME,
3407                                                                (GSourceFunc)selection_scroll_timeout_cb,
3408                                                                view);
3409                 else
3410                     selection_scroll_timeout_cb (view);
3411
3412                 view->selection_info.in_selection = TRUE;
3413                 view->motion.x = x + view->scroll_x;
3414                 view->motion.y = y + view->scroll_y;
3415
3416                 /* Queue an idle to handle the motion.  We do this because
3417                  * handling any selection events in the motion could be slower
3418                  * than new motion events reach us.  We always put it in the
3419                  * idle to make sure we catch up and don't visibly lag the
3420                  * mouse. */
3421                 if (!view->selection_update_id)
3422                         view->selection_update_id = g_idle_add ((GSourceFunc)selection_update_idle_cb, view);
3423
3424                 return TRUE;
3425         case 2:
3426                 if (!view->drag_info.in_drag) {
3427                         gboolean start;
3428                         int i;
3429
3430                         start = gtk_drag_check_threshold (widget,
3431                                                           view->drag_info.start.x,
3432                                                           view->drag_info.start.y,
3433                                                           event->x_root,
3434                                                           event->y_root);
3435                         view->drag_info.in_drag = start;
3436                         view->drag_info.drag_timeout_id = g_timeout_add (10,
3437                                 (GSourceFunc)ev_view_drag_update_momentum, view);
3438                         /* Set 100 to choose how long it takes to build up momentum */
3439                         /* Clear out previous momentum info: */
3440                         for (i = 0; i < DRAG_HISTORY; i++) {
3441                                 view->drag_info.buffer[i].x = event->x;
3442                                 view->drag_info.buffer[i].y = event->y;
3443                         }
3444                         view->drag_info.momentum.x = 0;
3445                         view->drag_info.momentum.y = 0;
3446                 }
3447
3448                 if (view->drag_info.in_drag) {
3449                         int dx, dy;
3450                         gdouble dhadj_value, dvadj_value;
3451
3452                         view->drag_info.buffer[0].x = event->x;
3453                         view->drag_info.buffer[0].y = event->y;
3454
3455                         dx = event->x_root - view->drag_info.start.x;
3456                         dy = event->y_root - view->drag_info.start.y;
3457
3458                         dhadj_value = view->hadjustment->page_size *
3459                                       (gdouble)dx / widget->allocation.width;
3460                         dvadj_value = view->vadjustment->page_size *
3461                                       (gdouble)dy / widget->allocation.height;
3462
3463                         /* clamp scrolling to visible area */
3464                         gtk_adjustment_set_value (view->hadjustment,
3465                                                   MIN(view->drag_info.hadj - dhadj_value,
3466                                                       view->hadjustment->upper -
3467                                                       view->hadjustment->page_size));
3468                         gtk_adjustment_set_value (view->vadjustment,
3469                                                   MIN(view->drag_info.vadj - dvadj_value,
3470                                                       view->vadjustment->upper -
3471                                                       view->vadjustment->page_size));
3472
3473                         return TRUE;
3474                 }
3475
3476                 break;
3477         default:
3478                 ev_view_handle_cursor_over_xy (view, x, y);
3479         }
3480
3481         return FALSE;
3482 }
3483
3484 static gboolean
3485 ev_view_button_release_event (GtkWidget      *widget,
3486                               GdkEventButton *event)
3487 {
3488         EvView *view = EV_VIEW (widget);
3489         EvLink *link = NULL;
3490
3491         view->image_dnd_info.in_drag = FALSE;
3492
3493         if (view->scroll_info.autoscrolling) {
3494                 ev_view_autoscroll_stop (view);
3495                 view->pressed_button = -1;
3496
3497                 return TRUE;
3498         }
3499
3500         if (view->drag_info.in_drag) {
3501                 view->drag_info.release_timeout_id =
3502                         g_timeout_add (20,
3503                                        (GSourceFunc)ev_view_scroll_drag_release, view);
3504         }
3505
3506         if (view->document && !view->drag_info.in_drag && view->pressed_button != 3) {
3507                 link = ev_view_get_link_at_location (view, event->x, event->y);
3508         }
3509
3510         view->drag_info.in_drag = FALSE;
3511
3512         if (view->pressed_button == 2) {
3513                 ev_view_handle_cursor_over_xy (view, event->x, event->y);
3514         }
3515
3516         view->pressed_button = -1;
3517
3518         if (view->selection_scroll_id) {
3519             g_source_remove (view->selection_scroll_id);
3520             view->selection_scroll_id = 0;
3521         }
3522         if (view->selection_update_id) {
3523             g_source_remove (view->selection_update_id);
3524             view->selection_update_id = 0;
3525         }
3526
3527         if (view->selection_info.selections) {
3528                 clear_link_selected (view);
3529                 ev_view_update_primary_selection (view);
3530
3531                 if (view->selection_info.in_drag) {
3532                         clear_selection (view);
3533                         gtk_widget_queue_draw (widget);
3534                 }
3535
3536                 view->selection_info.in_drag = FALSE;
3537         } else if (link) {
3538                 if (event->button == 2) {
3539                         EvLinkAction    *action;
3540                         EvLinkActionType type;
3541
3542                         action = ev_link_get_action (link);
3543                         if (!action)
3544                                 return FALSE;
3545
3546                         type = ev_link_action_get_action_type (action);
3547                         if (type == EV_LINK_ACTION_TYPE_GOTO_DEST) {
3548                                 g_signal_emit (view,
3549                                                signals[SIGNAL_EXTERNAL_LINK],
3550                                                0, action);
3551                         }
3552                 } else {
3553                         ev_view_handle_link (view, link);
3554                 }
3555         } else if (view->presentation) {
3556                 switch (event->button) {
3557                         case 1:
3558                                 ev_view_next_page (view);
3559                                 return TRUE;
3560                         case 3:
3561                                 ev_view_previous_page (view);
3562                                 return TRUE;
3563                 }
3564         }
3565
3566         return FALSE;
3567 }
3568
3569 /* Goto Window */
3570 /* Cut and paste from gtkwindow.c */
3571 static void
3572 send_focus_change (GtkWidget *widget,
3573                    gboolean   in)
3574 {
3575         GdkEvent *fevent = gdk_event_new (GDK_FOCUS_CHANGE);
3576
3577         g_object_ref (widget);
3578
3579         if (in)
3580                 GTK_WIDGET_SET_FLAGS (widget, GTK_HAS_FOCUS);
3581         else
3582                 GTK_WIDGET_UNSET_FLAGS (widget, GTK_HAS_FOCUS);
3583
3584         fevent->focus_change.type = GDK_FOCUS_CHANGE;
3585         fevent->focus_change.window = g_object_ref (widget->window);
3586         fevent->focus_change.in = in;
3587
3588         gtk_widget_event (widget, fevent);
3589
3590         g_object_notify (G_OBJECT (widget), "has-focus");
3591
3592         g_object_unref (widget);
3593         gdk_event_free (fevent);
3594 }
3595
3596 static void
3597 ev_view_goto_window_hide (EvView *view)
3598 {
3599         /* send focus-in event */
3600         send_focus_change (view->goto_entry, FALSE);
3601         gtk_widget_hide (view->goto_window);
3602         gtk_entry_set_text (GTK_ENTRY (view->goto_entry), "");
3603 }
3604
3605 static gboolean
3606 ev_view_goto_window_delete_event (GtkWidget   *widget,
3607                                   GdkEventAny *event,
3608                                   EvView      *view)
3609 {
3610         ev_view_goto_window_hide (view);
3611
3612         return TRUE;
3613 }
3614
3615 static gboolean
3616 key_is_numeric (guint keyval)
3617 {
3618         return ((keyval >= GDK_0 && keyval <= GDK_9) ||
3619                 (keyval >= GDK_KP_0 && keyval <= GDK_KP_9));
3620 }
3621
3622 static gboolean
3623 ev_view_goto_window_key_press_event (GtkWidget   *widget,
3624                                      GdkEventKey *event,
3625                                      EvView      *view)
3626 {
3627         switch (event->keyval) {
3628                 case GDK_Escape:
3629                 case GDK_Tab:
3630                 case GDK_KP_Tab:
3631                 case GDK_ISO_Left_Tab:
3632                         ev_view_goto_window_hide (view);
3633                         return TRUE;
3634                 case GDK_Return:
3635                 case GDK_KP_Enter:
3636                 case GDK_ISO_Enter:
3637                 case GDK_BackSpace:
3638                 case GDK_Delete:
3639                         return FALSE;
3640                 default:
3641                         if (!key_is_numeric (event->keyval))
3642                                 return TRUE;
3643         }
3644
3645         return FALSE;
3646 }
3647
3648 static gboolean
3649 ev_view_goto_window_button_press_event (GtkWidget      *widget,
3650                                         GdkEventButton *event,
3651                                         EvView         *view)
3652 {
3653         ev_view_goto_window_hide (view);
3654
3655         return TRUE;
3656 }
3657
3658 static void
3659 ev_view_goto_entry_activate (GtkEntry *entry,
3660                              EvView   *view)
3661 {
3662         const gchar *text;
3663         gint         page;
3664
3665         text = gtk_entry_get_text (entry);
3666         page = atoi (text) - 1;
3667
3668         ev_view_goto_window_hide (view);
3669
3670         if (page >= 0 &&
3671             page < ev_page_cache_get_n_pages (view->page_cache))
3672                 ev_page_cache_set_current_page (view->page_cache, page);
3673 }
3674
3675 static void
3676 ev_view_goto_window_create (EvView *view)
3677 {
3678         GtkWidget *frame, *hbox, *toplevel, *label;
3679
3680         toplevel = gtk_widget_get_toplevel (GTK_WIDGET (view));
3681
3682         if (view->goto_window) {
3683                 if (GTK_WINDOW (toplevel)->group)
3684                         gtk_window_group_add_window (GTK_WINDOW (toplevel)->group,
3685                                                      GTK_WINDOW (view->goto_window));
3686                 else if (GTK_WINDOW (view->goto_window)->group)
3687                         gtk_window_group_remove_window (GTK_WINDOW (view->goto_window)->group,
3688                                                         GTK_WINDOW (view->goto_window));
3689                 return;
3690         }
3691
3692         view->goto_window = gtk_window_new (GTK_WINDOW_POPUP);
3693         gtk_window_set_screen (GTK_WINDOW (view->goto_window),
3694                                gtk_widget_get_screen (GTK_WIDGET (view)));
3695
3696         if (GTK_WINDOW (toplevel)->group)
3697                 gtk_window_group_add_window (GTK_WINDOW (toplevel)->group,
3698                                              GTK_WINDOW (view->goto_window));
3699
3700         gtk_window_set_modal (GTK_WINDOW (view->goto_window), TRUE);
3701
3702         g_signal_connect (view->goto_window, "delete_event",
3703                           G_CALLBACK (ev_view_goto_window_delete_event),
3704                           view);
3705         g_signal_connect (view->goto_window, "key_press_event",
3706                           G_CALLBACK (ev_view_goto_window_key_press_event),
3707                           view);
3708         g_signal_connect (view->goto_window, "button_press_event",
3709                           G_CALLBACK (ev_view_goto_window_button_press_event),
3710                           view);
3711
3712         frame = gtk_frame_new (NULL);
3713         gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_ETCHED_IN);
3714         gtk_container_add (GTK_CONTAINER (view->goto_window), frame);
3715         gtk_widget_show (frame);
3716
3717         hbox = gtk_hbox_new (FALSE, 0);
3718         gtk_container_set_border_width (GTK_CONTAINER (hbox), 3);
3719         gtk_container_add (GTK_CONTAINER (frame), hbox);
3720         gtk_widget_show (hbox);
3721
3722         label = gtk_label_new(_("Jump to page:"));
3723         gtk_box_pack_start (GTK_BOX (hbox), label, TRUE, TRUE, 3);
3724         gtk_widget_show (label);
3725         gtk_widget_realize (label);
3726
3727         view->goto_entry = gtk_entry_new ();
3728         g_signal_connect (view->goto_entry, "activate",
3729                           G_CALLBACK (ev_view_goto_entry_activate),
3730                           view);
3731         gtk_box_pack_start (GTK_BOX (hbox), view->goto_entry, TRUE, TRUE, 0);
3732         gtk_widget_show (view->goto_entry);
3733         gtk_widget_realize (view->goto_entry);
3734 }
3735
3736 static void
3737 ev_view_goto_entry_grab_focus (EvView *view)
3738 {
3739         GtkWidgetClass *entry_parent_class;
3740
3741         entry_parent_class = g_type_class_peek_parent (GTK_ENTRY_GET_CLASS (view->goto_entry));
3742         (entry_parent_class->grab_focus) (view->goto_entry);
3743
3744         send_focus_change (view->goto_entry, TRUE);
3745 }
3746
3747 static void
3748 ev_view_goto_window_send_key_event (EvView   *view,
3749                                     GdkEvent *event)
3750 {
3751         GdkEventKey *new_event;
3752         GdkScreen   *screen;
3753
3754         /* Move goto window off screen */
3755         screen = gtk_widget_get_screen (GTK_WIDGET (view));
3756         gtk_window_move (GTK_WINDOW (view->goto_window),
3757                          gdk_screen_get_width (screen) + 1,
3758                          gdk_screen_get_height (screen) + 1);
3759         gtk_widget_show (view->goto_window);
3760
3761         new_event = (GdkEventKey *) gdk_event_copy (event);
3762         g_object_unref (new_event->window);
3763         new_event->window = g_object_ref (view->goto_window->window);
3764         gtk_widget_realize (view->goto_window);
3765
3766         gtk_widget_event (view->goto_window, (GdkEvent *)new_event);
3767         gdk_event_free ((GdkEvent *)new_event);
3768         gtk_widget_hide (view->goto_window);
3769 }
3770
3771 static gboolean
3772 ev_view_key_press_event (GtkWidget   *widget,
3773                          GdkEventKey *event)
3774 {
3775         EvView *view = EV_VIEW (widget);
3776         EvPresentationState current;
3777
3778         if (!view->document)
3779                 return FALSE;
3780
3781         if (!GTK_WIDGET_HAS_FOCUS (widget)) {
3782                 /* Forward key events to current focused window child */
3783                 if (view->window_child_focus) {
3784                         GdkEventKey *new_event;
3785                         gboolean     handled;
3786
3787                         new_event = (GdkEventKey *) gdk_event_copy ((GdkEvent *)event);
3788                         g_object_unref (new_event->window);
3789                         new_event->window = g_object_ref (view->window_child_focus->window->window);
3790                         gtk_widget_realize (view->window_child_focus->window);
3791                         handled = gtk_widget_event (view->window_child_focus->window, (GdkEvent *)new_event);
3792                         gdk_event_free ((GdkEvent *)new_event);
3793
3794                         return handled;
3795                 }
3796
3797                 return FALSE;
3798         }
3799
3800         if (!view->presentation ||
3801             view->presentation_state == EV_PRESENTATION_END)
3802                 return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
3803
3804
3805         current = view->presentation_state;
3806
3807         switch (event->keyval) {
3808                 case GDK_b:
3809                 case GDK_B:
3810                 case GDK_period:
3811                 case GDK_KP_Decimal:
3812                         view->presentation_state =
3813                                 (view->presentation_state == EV_PRESENTATION_BLACK) ?
3814                                 EV_PRESENTATION_NORMAL : EV_PRESENTATION_BLACK;
3815                         break;
3816                 case GDK_w:
3817                 case GDK_W:
3818                         view->presentation_state =
3819                                 (view->presentation_state == EV_PRESENTATION_WHITE) ?
3820                                 EV_PRESENTATION_NORMAL : EV_PRESENTATION_WHITE;
3821                         break;
3822                 default:
3823                         if (view->presentation_state == EV_PRESENTATION_BLACK ||
3824                             view->presentation_state == EV_PRESENTATION_WHITE) {
3825                                 view->presentation_state = EV_PRESENTATION_NORMAL;
3826                         }
3827         }
3828
3829         if (current == view->presentation_state) {
3830                 if (ev_page_cache_get_n_pages (view->page_cache) > 1 &&
3831                     key_is_numeric (event->keyval)) {
3832                         gint x, y;
3833
3834                         ev_view_goto_window_create (view);
3835                         ev_view_goto_window_send_key_event (view, (GdkEvent *)event);
3836                         gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
3837                         gtk_window_move (GTK_WINDOW (view->goto_window), x, y);
3838                         gtk_widget_show (view->goto_window);
3839                         ev_view_goto_entry_grab_focus (view);
3840
3841                         return TRUE;
3842                 }
3843
3844                 return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
3845         }
3846
3847         switch (view->presentation_state) {
3848                 case EV_PRESENTATION_NORMAL:
3849                 case EV_PRESENTATION_BLACK:
3850                         gdk_window_set_background (view->layout.bin_window,
3851                                                    &widget->style->black);
3852                         break;
3853                 case EV_PRESENTATION_WHITE:
3854                         gdk_window_set_background (view->layout.bin_window,
3855                                                    &widget->style->white);
3856                         break;
3857                 default:
3858                         return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
3859         }
3860
3861         gtk_widget_queue_draw (widget);
3862         return TRUE;
3863 }
3864
3865 static gint
3866 ev_view_focus_in (GtkWidget     *widget,
3867                   GdkEventFocus *event)
3868 {
3869         if (EV_VIEW (widget)->pixbuf_cache)
3870                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
3871         gtk_widget_queue_draw (widget);
3872
3873         return FALSE;
3874 }
3875
3876 static gint
3877 ev_view_focus_out (GtkWidget     *widget,
3878                      GdkEventFocus *event)
3879 {
3880         if (EV_VIEW (widget)->goto_window)
3881                 ev_view_goto_window_hide (EV_VIEW (widget));
3882
3883         if (EV_VIEW (widget)->pixbuf_cache)
3884                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
3885         gtk_widget_queue_draw (widget);
3886
3887         return FALSE;
3888 }
3889
3890 static gboolean
3891 ev_view_leave_notify_event (GtkWidget *widget, GdkEventCrossing   *event)
3892 {
3893         EvView *view = EV_VIEW (widget);
3894
3895         if (view->cursor != EV_VIEW_CURSOR_NORMAL)
3896                 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
3897
3898         return FALSE;
3899 }
3900
3901 static gboolean
3902 ev_view_enter_notify_event (GtkWidget *widget, GdkEventCrossing   *event)
3903 {
3904         EvView *view = EV_VIEW (widget);
3905
3906         ev_view_handle_cursor_over_xy (view, event->x, event->y);
3907
3908         return FALSE;
3909 }
3910
3911 static void
3912 ev_view_style_set (GtkWidget *widget,
3913                    GtkStyle  *old_style)
3914 {
3915         if (EV_VIEW (widget)->pixbuf_cache)
3916                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
3917
3918         GTK_WIDGET_CLASS (ev_view_parent_class)->style_set (widget, old_style);
3919 }
3920
3921 /*** Drawing ***/
3922
3923 static guint32
3924 ev_gdk_color_to_rgb (const GdkColor *color)
3925 {
3926   guint32 result;
3927   result = (0xff0000 | (color->red & 0xff00));
3928   result <<= 8;
3929   result |= ((color->green & 0xff00) | (color->blue >> 8));
3930   return result;
3931 }
3932
3933 static void
3934 draw_rubberband (GtkWidget *widget, GdkWindow *window,
3935                  const GdkRectangle *rect, guchar alpha)
3936 {
3937         GdkGC *gc;
3938         GdkPixbuf *pixbuf;
3939         GdkColor *fill_color_gdk;
3940         guint fill_color;
3941
3942         fill_color_gdk = gdk_color_copy (&GTK_WIDGET (widget)->style->base[GTK_STATE_SELECTED]);
3943         fill_color = ev_gdk_color_to_rgb (fill_color_gdk) << 8 | alpha;
3944
3945         pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE, 8,
3946                                  rect->width, rect->height);
3947         gdk_pixbuf_fill (pixbuf, fill_color);
3948
3949         gdk_draw_pixbuf (window, NULL, pixbuf,
3950                          0, 0,
3951                          rect->x - EV_VIEW (widget)->scroll_x, rect->y - EV_VIEW (widget)->scroll_y,
3952                          rect->width, rect->height,
3953                          GDK_RGB_DITHER_NONE,
3954                          0, 0);
3955
3956         g_object_unref (pixbuf);
3957
3958         gc = gdk_gc_new (window);
3959         gdk_gc_set_rgb_fg_color (gc, fill_color_gdk);
3960         gdk_draw_rectangle (window, gc, FALSE,
3961                             rect->x - EV_VIEW (widget)->scroll_x, rect->y - EV_VIEW (widget)->scroll_y,
3962                             rect->width - 1,
3963                             rect->height - 1);
3964         g_object_unref (gc);
3965
3966         gdk_color_free (fill_color_gdk);
3967 }
3968
3969
3970 static void
3971 highlight_find_results (EvView *view, int page)
3972 {
3973         gint i, n_results = 0;
3974
3975         n_results = ev_view_find_get_n_results (view, page);
3976
3977         for (i = 0; i < n_results; i++) {
3978                 EvRectangle *rectangle;
3979                 GdkRectangle view_rectangle;
3980                 guchar alpha;
3981
3982                 if (i == view->find_result && page == view->current_page) {
3983                         alpha = 0x90;
3984                 } else {
3985                         alpha = 0x20;
3986                 }
3987
3988                 rectangle = ev_view_find_get_result (view, page, i);
3989                 doc_rect_to_view_rect (view, page, rectangle, &view_rectangle);
3990                 draw_rubberband (GTK_WIDGET (view), view->layout.bin_window,
3991                                  &view_rectangle, alpha);
3992         }
3993 }
3994
3995 static void
3996 draw_loading_text (EvView       *view,
3997                    GdkRectangle *page_area,
3998                    GdkRectangle *expose_area)
3999 {
4000         cairo_t *cr;
4001         gint     width, height;
4002
4003         if (!view->loading_text) {
4004                 const gchar *loading_text = _("Loading...");
4005                 PangoLayout *layout;
4006                 PangoFontDescription *font_desc;
4007                 PangoRectangle logical_rect;
4008                 gint target_width;
4009                 gdouble real_scale;
4010
4011                 ev_document_fc_mutex_lock ();
4012
4013                 layout = gtk_widget_create_pango_layout (GTK_WIDGET (view), loading_text);
4014
4015                 font_desc = pango_font_description_new ();
4016
4017                 /* We set the font to be 10 points, get the size, and scale appropriately */
4018                 pango_font_description_set_size (font_desc, 10 * PANGO_SCALE);
4019                 pango_layout_set_font_description (layout, font_desc);
4020                 pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
4021
4022                 target_width = MAX (page_area->width / 2, 1);
4023                 real_scale = ((double)target_width / (double) logical_rect.width) * (PANGO_SCALE * 10);
4024                 pango_font_description_set_size (font_desc, (int)real_scale);
4025                 pango_layout_set_font_description (layout, font_desc);
4026                 pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
4027
4028                 view->loading_text = cairo_image_surface_create (CAIRO_FORMAT_ARGB32,
4029                                                                  logical_rect.width,
4030                                                                  logical_rect.height);
4031                 cr = cairo_create (view->loading_text);
4032                 cairo_set_source_rgb (cr,
4033                                       155 / (double)255,
4034                                       155 / (double)255,
4035                                       155 / (double)255);
4036                 pango_cairo_show_layout (cr, layout);
4037                 cairo_destroy (cr);
4038
4039                 pango_font_description_free (font_desc);
4040                 g_object_unref (layout);
4041
4042                 ev_document_fc_mutex_unlock ();
4043         }
4044
4045         width = (page_area->width - cairo_image_surface_get_width (view->loading_text)) / 2;
4046         height = (page_area->height - cairo_image_surface_get_height (view->loading_text)) / 2;
4047
4048         cr = gdk_cairo_create (view->layout.bin_window);
4049         cairo_translate (cr,
4050                          page_area->x + width,
4051                          page_area->y + height);
4052         cairo_set_source_surface (cr, view->loading_text, 0, 0);
4053         cairo_paint (cr);
4054         cairo_destroy (cr);
4055 }
4056
4057 static void
4058 draw_one_page (EvView       *view,
4059                gint          page,
4060                cairo_t      *cr,
4061                GdkRectangle *page_area,
4062                GtkBorder    *border,
4063                GdkRectangle *expose_area,
4064                gboolean     *page_ready)
4065 {
4066         GdkRectangle overlap;
4067         GdkRectangle real_page_area;
4068
4069         g_assert (view->document);
4070
4071         if (! gdk_rectangle_intersect (page_area, expose_area, &overlap))
4072                 return;
4073
4074         /* Render the document itself */
4075         real_page_area = *page_area;
4076
4077         real_page_area.x += border->left;
4078         real_page_area.y += border->top;
4079         real_page_area.width -= (border->left + border->right);
4080         real_page_area.height -= (border->top + border->bottom);
4081         *page_ready = TRUE;
4082
4083         if (!view->presentation) {
4084                 gint current_page;
4085
4086                 current_page = ev_page_cache_get_current_page (view->page_cache);
4087                 ev_document_misc_paint_one_page (view->layout.bin_window,
4088                                                  GTK_WIDGET (view),
4089                                                  page_area, border,
4090                                                  page == current_page);
4091         }
4092
4093         if (gdk_rectangle_intersect (&real_page_area, expose_area, &overlap)) {
4094                 gint             width, height;
4095                 gint             page_width, page_height;
4096                 cairo_surface_t *page_surface = NULL;
4097                 gint             selection_width, selection_height;
4098                 cairo_surface_t *selection_surface = NULL;
4099
4100                 page_surface = ev_pixbuf_cache_get_surface (view->pixbuf_cache, page);
4101
4102                 if (!page_surface) {
4103                         if (!view->presentation) {
4104                                 draw_loading_text (view,
4105                                                    &real_page_area,
4106                                                    expose_area);
4107                         }
4108
4109                         *page_ready = FALSE;
4110
4111                         return;
4112                 }
4113
4114                 ev_page_cache_get_size (view->page_cache,
4115                                         page, view->rotation,
4116                                         view->scale,
4117                                         &width, &height);
4118
4119                 page_width = cairo_image_surface_get_width (page_surface);
4120                 page_height = cairo_image_surface_get_height (page_surface);
4121
4122                 cairo_save (cr);
4123                 cairo_translate (cr, overlap.x, overlap.y);
4124
4125                 if (width != page_width || height != page_height) {
4126                         cairo_pattern_set_filter (cairo_get_source (cr),
4127                                                   CAIRO_FILTER_FAST);
4128                         cairo_scale (cr,
4129                                      (gdouble)width / page_width,
4130                                      (gdouble)height / page_height);
4131                 }
4132
4133                 cairo_surface_set_device_offset (page_surface,
4134                                                  overlap.x - real_page_area.x,
4135                                                  overlap.y - real_page_area.y);
4136                 cairo_set_source_surface (cr, page_surface, 0, 0);
4137                 cairo_paint (cr);
4138                 cairo_restore (cr);
4139
4140                 /* Get the selection pixbuf iff we have something to draw */
4141                 if (find_selection_for_page (view, page) &&
4142                     view->selection_mode == EV_VIEW_SELECTION_TEXT) {
4143                         selection_surface =
4144                                 ev_pixbuf_cache_get_selection_surface (view->pixbuf_cache,
4145                                                                        page,
4146                                                                        view->scale,
4147                                                                        NULL);
4148                 }
4149
4150                 if (!selection_surface) {
4151                         return;
4152                 }
4153
4154                 selection_width = cairo_image_surface_get_width (selection_surface);
4155                 selection_height = cairo_image_surface_get_height (selection_surface);
4156
4157                 cairo_save (cr);
4158                 cairo_translate (cr, overlap.x, overlap.y);
4159
4160                 if (width != selection_width || height != selection_height) {
4161                         cairo_pattern_set_filter (cairo_get_source (cr),
4162                                                   CAIRO_FILTER_FAST);
4163                         cairo_scale (cr,
4164                                      (gdouble)width / selection_width,
4165                                      (gdouble)height / selection_height);
4166                 }
4167
4168                 cairo_surface_set_device_offset (selection_surface,
4169                                                  overlap.x - real_page_area.x,
4170                                                  overlap.y - real_page_area.y);
4171                 cairo_set_source_surface (cr, selection_surface, 0, 0);
4172                 cairo_paint (cr);
4173                 cairo_restore (cr);
4174         }
4175 }
4176
4177 /*** GObject functions ***/
4178
4179 static void
4180 ev_view_finalize (GObject *object)
4181 {
4182         EvView *view = EV_VIEW (object);
4183
4184         clear_selection (view);
4185         clear_link_selected (view);
4186
4187         if (view->image_dnd_info.image)
4188                 g_object_unref (view->image_dnd_info.image);
4189         view->image_dnd_info.image = NULL;
4190
4191         G_OBJECT_CLASS (ev_view_parent_class)->finalize (object);
4192 }
4193
4194 static void
4195 ev_view_destroy (GtkObject *object)
4196 {
4197         EvView *view = EV_VIEW (object);
4198
4199         if (view->document) {
4200                 g_object_unref (view->document);
4201                 view->document = NULL;
4202         }
4203
4204         if (view->pixbuf_cache) {
4205                 g_object_unref (view->pixbuf_cache);
4206                 view->pixbuf_cache = NULL;
4207         }
4208
4209         if (view->goto_window) {
4210                 gtk_widget_destroy (view->goto_window);
4211                 view->goto_window = NULL;
4212                 view->goto_entry = NULL;
4213         }
4214
4215         ev_view_window_children_free (view);
4216
4217         if (view->selection_scroll_id) {
4218             g_source_remove (view->selection_scroll_id);
4219             view->selection_scroll_id = 0;
4220         }
4221
4222         if (view->selection_update_id) {
4223             g_source_remove (view->selection_update_id);
4224             view->selection_update_id = 0;
4225         }
4226
4227         if (view->loading_text) {
4228                 cairo_surface_destroy (view->loading_text);
4229                 view->loading_text = NULL;
4230         }
4231
4232         if (view->scroll_info.timeout_id) {
4233             g_source_remove (view->scroll_info.timeout_id);
4234             view->scroll_info.timeout_id = 0;
4235         }
4236
4237         if (view->drag_info.drag_timeout_id) {
4238                 g_source_remove (view->drag_info.drag_timeout_id);
4239                 view->drag_info.drag_timeout_id = 0;
4240         }
4241
4242         if (view->drag_info.release_timeout_id) {
4243                 g_source_remove (view->drag_info.release_timeout_id);
4244                 view->drag_info.release_timeout_id = 0;
4245         }
4246
4247         ev_view_presentation_transition_stop (view);
4248
4249         ev_view_set_scroll_adjustments (GTK_LAYOUT (view), NULL, NULL);
4250
4251         GTK_OBJECT_CLASS (ev_view_parent_class)->destroy (object);
4252 }
4253
4254 static void
4255 ev_view_set_property (GObject      *object,
4256                       guint         prop_id,
4257                       const GValue *value,
4258                       GParamSpec   *pspec)
4259 {
4260         EvView *view = EV_VIEW (object);
4261
4262         switch (prop_id) {
4263                 case PROP_CONTINUOUS:
4264                         ev_view_set_continuous (view, g_value_get_boolean (value));
4265                         break;
4266                 case PROP_DUAL_PAGE:
4267                         ev_view_set_dual_page (view, g_value_get_boolean (value));
4268                         break;
4269                 case PROP_FULLSCREEN:
4270                         ev_view_set_fullscreen (view, g_value_get_boolean (value));
4271                         break;
4272                 case PROP_PRESENTATION:
4273                         ev_view_set_presentation (view, g_value_get_boolean (value));
4274                         break;
4275                 case PROP_SIZING_MODE:
4276                         ev_view_set_sizing_mode (view, g_value_get_enum (value));
4277                         break;
4278                 case PROP_ZOOM:
4279                         ev_view_set_zoom (view, g_value_get_double (value), FALSE);
4280                         break;
4281                 case PROP_ROTATION:
4282                         ev_view_set_rotation (view, g_value_get_int (value));
4283                         break;
4284                 default:
4285                         G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
4286         }
4287 }
4288
4289 static AtkObject *
4290 ev_view_get_accessible (GtkWidget *widget)
4291 {
4292         static gboolean first_time = TRUE;
4293
4294         if (first_time) {
4295                 AtkObjectFactory *factory;
4296                 AtkRegistry *registry;
4297                 GType derived_type;
4298                 GType derived_atk_type;
4299
4300                 /*
4301                  * Figure out whether accessibility is enabled by looking at the
4302                  * type of the accessible object which would be created for
4303                  * the parent type of EvView.
4304                  */
4305                 derived_type = g_type_parent (EV_TYPE_VIEW);
4306
4307                 registry = atk_get_default_registry ();
4308                 factory = atk_registry_get_factory (registry,
4309                                                     derived_type);
4310                 derived_atk_type = atk_object_factory_get_accessible_type (factory);
4311                 if (g_type_is_a (derived_atk_type, GTK_TYPE_ACCESSIBLE))
4312                         atk_registry_set_factory_type (registry,
4313                                                        EV_TYPE_VIEW,
4314                                                        ev_view_accessible_factory_get_type ());
4315                 first_time = FALSE;
4316         }
4317         return GTK_WIDGET_CLASS (ev_view_parent_class)->get_accessible (widget);
4318 }
4319
4320 static void
4321 ev_view_get_property (GObject *object,
4322                       guint prop_id,
4323                       GValue *value,
4324                       GParamSpec *pspec)
4325 {
4326         EvView *view = EV_VIEW (object);
4327
4328         switch (prop_id) {
4329                 case PROP_CONTINUOUS:
4330                         g_value_set_boolean (value, view->continuous);
4331                         break;
4332                 case PROP_DUAL_PAGE:
4333                         g_value_set_boolean (value, view->dual_page);
4334                         break;
4335                 case PROP_FULLSCREEN:
4336                         g_value_set_boolean (value, view->fullscreen);
4337                         break;
4338                 case PROP_PRESENTATION:
4339                         g_value_set_boolean (value, view->presentation);
4340                         break;
4341                 case PROP_SIZING_MODE:
4342                         g_value_set_enum (value, view->sizing_mode);
4343                         break;
4344                 case PROP_ZOOM:
4345                         g_value_set_double (value, view->scale);
4346                         break;
4347                 case PROP_ROTATION:
4348                         g_value_set_int (value, view->rotation);
4349                         break;
4350                 case PROP_HAS_SELECTION:
4351                         g_value_set_boolean (value,
4352                                              view->selection_info.selections != NULL);
4353                         break;
4354                 default:
4355                         G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
4356         }
4357 }
4358
4359 static void
4360 ev_view_class_init (EvViewClass *class)
4361 {
4362         GObjectClass *object_class = G_OBJECT_CLASS (class);
4363         GtkObjectClass *gtk_object_class = GTK_OBJECT_CLASS (class);
4364         GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
4365         GtkLayoutClass *layout_class = GTK_LAYOUT_CLASS (class);
4366         GtkBindingSet *binding_set;
4367
4368         object_class->finalize = ev_view_finalize;
4369         object_class->set_property = ev_view_set_property;
4370         object_class->get_property = ev_view_get_property;
4371
4372         widget_class->expose_event = ev_view_expose_event;
4373         widget_class->button_press_event = ev_view_button_press_event;
4374         widget_class->motion_notify_event = ev_view_motion_notify_event;
4375         widget_class->button_release_event = ev_view_button_release_event;
4376         widget_class->key_press_event = ev_view_key_press_event;
4377         widget_class->focus_in_event = ev_view_focus_in;
4378         widget_class->focus_out_event = ev_view_focus_out;
4379         widget_class->get_accessible = ev_view_get_accessible;
4380         widget_class->size_request = ev_view_size_request;
4381         widget_class->size_allocate = ev_view_size_allocate;
4382         widget_class->realize = ev_view_realize;
4383         widget_class->scroll_event = ev_view_scroll_event;
4384         widget_class->enter_notify_event = ev_view_enter_notify_event;
4385         widget_class->leave_notify_event = ev_view_leave_notify_event;
4386         widget_class->style_set = ev_view_style_set;
4387         widget_class->drag_data_get = ev_view_drag_data_get;
4388         widget_class->drag_motion = ev_view_drag_motion;
4389         widget_class->popup_menu = ev_view_popup_menu;
4390         widget_class->query_tooltip = ev_view_query_tooltip;
4391
4392         gtk_object_class->destroy = ev_view_destroy;
4393
4394         layout_class->set_scroll_adjustments = ev_view_set_scroll_adjustments;
4395
4396         class->binding_activated = ev_view_scroll;
4397
4398         signals[SIGNAL_BINDING_ACTIVATED] = g_signal_new ("binding_activated",
4399                          G_TYPE_FROM_CLASS (object_class),
4400                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
4401                          G_STRUCT_OFFSET (EvViewClass, binding_activated),
4402                          NULL, NULL,
4403                          ev_view_marshal_VOID__ENUM_BOOLEAN,
4404                          G_TYPE_NONE, 2,
4405                          GTK_TYPE_SCROLL_TYPE,
4406                          G_TYPE_BOOLEAN);
4407
4408         signals[SIGNAL_ZOOM_INVALID] = g_signal_new ("zoom-invalid",
4409                          G_TYPE_FROM_CLASS (object_class),
4410                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
4411                          G_STRUCT_OFFSET (EvViewClass, zoom_invalid),
4412                          NULL, NULL,
4413                          g_cclosure_marshal_VOID__VOID,
4414                          G_TYPE_NONE, 0, G_TYPE_NONE);
4415         signals[SIGNAL_HANDLE_LINK] = g_signal_new ("handle-link",
4416                          G_TYPE_FROM_CLASS (object_class),
4417                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
4418                          G_STRUCT_OFFSET (EvViewClass, handle_link),
4419                          NULL, NULL,
4420                          g_cclosure_marshal_VOID__OBJECT,
4421                          G_TYPE_NONE, 1,
4422                          G_TYPE_OBJECT);
4423         signals[SIGNAL_EXTERNAL_LINK] = g_signal_new ("external-link",
4424                          G_TYPE_FROM_CLASS (object_class),
4425                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
4426                          G_STRUCT_OFFSET (EvViewClass, external_link),
4427                          NULL, NULL,
4428                          g_cclosure_marshal_VOID__OBJECT,
4429                          G_TYPE_NONE, 1,
4430                          G_TYPE_OBJECT);
4431         signals[SIGNAL_POPUP_MENU] = g_signal_new ("popup",
4432                          G_TYPE_FROM_CLASS (object_class),
4433                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
4434                          G_STRUCT_OFFSET (EvViewClass, popup_menu),
4435                          NULL, NULL,
4436                          g_cclosure_marshal_VOID__OBJECT,
4437                          G_TYPE_NONE, 1,
4438                          G_TYPE_OBJECT);
4439
4440
4441         g_object_class_install_property (object_class,
4442                                          PROP_CONTINUOUS,
4443                                          g_param_spec_boolean ("continuous",
4444                                                                "Continuous",
4445                                                                "Continuous scrolling mode",
4446                                                                TRUE,
4447                                                                G_PARAM_READWRITE));
4448
4449         g_object_class_install_property (object_class,
4450                                          PROP_DUAL_PAGE,
4451                                          g_param_spec_boolean ("dual-page",
4452                                                                "Dual Page",
4453                                                                "Two pages visible at once",
4454                                                                FALSE,
4455                                                                G_PARAM_READWRITE));
4456         g_object_class_install_property (object_class,
4457                                          PROP_FULLSCREEN,
4458                                          g_param_spec_boolean ("fullscreen",
4459                                                                "Full Screen",
4460                                                                "Draw page in a fullscreen fashion",
4461                                                                FALSE,
4462                                                                G_PARAM_READWRITE));
4463         g_object_class_install_property (object_class,
4464                                          PROP_PRESENTATION,
4465                                          g_param_spec_boolean ("presentation",
4466                                                                "Presentation",
4467                                                                "Draw page in presentation mode",
4468                                                                TRUE,
4469                                                                G_PARAM_READWRITE));
4470
4471         g_object_class_install_property (object_class,
4472                                          PROP_SIZING_MODE,
4473                                          g_param_spec_enum ("sizing-mode",
4474                                                             "Sizing Mode",
4475                                                             "Sizing Mode",
4476                                                             EV_TYPE_SIZING_MODE,
4477                                                             EV_SIZING_FIT_WIDTH,
4478                                                             G_PARAM_READWRITE));
4479
4480         g_object_class_install_property (object_class,
4481                                          PROP_ZOOM,
4482                                          g_param_spec_double ("zoom",
4483                                                               "Zoom factor",
4484                                                               "Zoom factor",
4485                                                               0,
4486                                                               G_MAXDOUBLE,
4487                                                               1.0,
4488                                                               G_PARAM_READWRITE));
4489         g_object_class_install_property (object_class,
4490                                          PROP_ROTATION,
4491                                          g_param_spec_double ("rotation",
4492                                                               "Rotation",
4493                                                               "Rotation",
4494                                                               0,
4495                                                               360,
4496                                                               0,
4497                                                               G_PARAM_READWRITE));
4498         g_object_class_install_property (object_class,
4499                                          PROP_HAS_SELECTION,
4500                                          g_param_spec_boolean ("has-selection",
4501                                                                "Has selection",
4502                                                                "The view has selections",
4503                                                                FALSE,
4504                                                                G_PARAM_READABLE));
4505
4506         binding_set = gtk_binding_set_by_class (class);
4507
4508         add_scroll_binding_keypad (binding_set, GDK_Left,  0, GTK_SCROLL_STEP_BACKWARD, TRUE);
4509         add_scroll_binding_keypad (binding_set, GDK_Right, 0, GTK_SCROLL_STEP_FORWARD,  TRUE);
4510         add_scroll_binding_keypad (binding_set, GDK_Left,  GDK_MOD1_MASK, GTK_SCROLL_STEP_DOWN, TRUE);
4511         add_scroll_binding_keypad (binding_set, GDK_Right, GDK_MOD1_MASK, GTK_SCROLL_STEP_UP,  TRUE);
4512         add_scroll_binding_keypad (binding_set, GDK_Up,    0, GTK_SCROLL_STEP_BACKWARD, FALSE);
4513         add_scroll_binding_keypad (binding_set, GDK_Down,  0, GTK_SCROLL_STEP_FORWARD,  FALSE);
4514         add_scroll_binding_keypad (binding_set, GDK_Up,    GDK_MOD1_MASK, GTK_SCROLL_STEP_DOWN, FALSE);
4515         add_scroll_binding_keypad (binding_set, GDK_Down,  GDK_MOD1_MASK, GTK_SCROLL_STEP_UP,  FALSE);
4516         gtk_binding_entry_add_signal (binding_set, GDK_H, 0, "binding_activated", 2, GTK_TYPE_SCROLL_TYPE,
4517                                       GTK_SCROLL_STEP_BACKWARD, G_TYPE_BOOLEAN, TRUE);
4518         gtk_binding_entry_add_signal (binding_set, GDK_J, 0, "binding_activated", 2, GTK_TYPE_SCROLL_TYPE,
4519                                       GTK_SCROLL_STEP_FORWARD, G_TYPE_BOOLEAN, FALSE);
4520         gtk_binding_entry_add_signal (binding_set, GDK_K, 0, "binding_activated", 2, GTK_TYPE_SCROLL_TYPE,
4521                                       GTK_SCROLL_STEP_BACKWARD, G_TYPE_BOOLEAN, FALSE);
4522         gtk_binding_entry_add_signal (binding_set, GDK_L, 0, "binding_activated", 2, GTK_TYPE_SCROLL_TYPE,
4523                                       GTK_SCROLL_STEP_FORWARD, G_TYPE_BOOLEAN, TRUE);
4524
4525 }
4526
4527 static void
4528 ev_view_init (EvView *view)
4529 {
4530         GTK_WIDGET_SET_FLAGS (view, GTK_CAN_FOCUS);
4531
4532         view->start_page = -1;
4533         view->end_page = -1;
4534         view->spacing = 5;
4535         view->scale = 1.0;
4536         view->current_page = 0;
4537         view->pressed_button = -1;
4538         view->cursor = EV_VIEW_CURSOR_NORMAL;
4539         view->drag_info.in_drag = FALSE;
4540         view->scroll_info.autoscrolling = FALSE;
4541         view->selection_info.selections = NULL;
4542         view->selection_info.in_selection = FALSE;
4543         view->selection_info.in_drag = FALSE;
4544         view->selection_mode = EV_VIEW_SELECTION_TEXT;
4545         view->continuous = TRUE;
4546         view->dual_page = FALSE;
4547         view->presentation = FALSE;
4548         view->presentation_state = EV_PRESENTATION_NORMAL;
4549         view->fullscreen = FALSE;
4550         view->sizing_mode = EV_SIZING_FIT_WIDTH;
4551         view->pending_scroll = SCROLL_TO_KEEP_POSITION;
4552         view->jump_to_find_result = TRUE;
4553         view->highlight_find_results = FALSE;
4554
4555         gtk_layout_set_hadjustment (GTK_LAYOUT (view), NULL);
4556         gtk_layout_set_vadjustment (GTK_LAYOUT (view), NULL);
4557 }
4558
4559 /*** Callbacks ***/
4560
4561 static void
4562 ev_view_change_page (EvView *view,
4563                      gint    new_page,
4564                      gboolean start_transition)
4565 {
4566         gint x, y;
4567
4568         view->current_page = new_page;
4569         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
4570
4571         if (view->presentation && start_transition)
4572                 ev_view_presentation_transition_start (view);
4573
4574         gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
4575         ev_view_handle_cursor_over_xy (view, x, y);
4576
4577         gtk_widget_queue_resize (GTK_WIDGET (view));
4578 }
4579
4580 static void
4581 ev_view_transition_animation_finish (EvTransitionAnimation *animation,
4582                                      EvView                *view)
4583 {
4584         g_object_unref (view->animation);
4585         view->animation = NULL;
4586         ev_view_change_page (view, view->current_page, TRUE);
4587 }
4588
4589 /**
4590  * ev_view_transition_animation_cancel:
4591  * @animation: Animation to finish
4592  * @view: An EvView
4593  *
4594  * Does almost the same as cancel, but without scheduling the transition.
4595  */
4596
4597 static void
4598 ev_view_transition_animation_cancel (EvTransitionAnimation *animation,
4599                                      EvView                *view)
4600 {
4601         g_object_unref (view->animation);
4602         view->animation = NULL;
4603         ev_view_change_page (view, view->current_page, FALSE);
4604 }
4605
4606 static void
4607 ev_view_transition_animation_frame (EvTransitionAnimation *animation,
4608                                     gdouble                progress,
4609                                     EvView                *view)
4610 {
4611         gtk_widget_queue_draw (GTK_WIDGET (view));
4612 }
4613
4614 static void
4615 ev_view_presentation_animation_start (EvView *view,
4616                                       int     new_page)
4617 {
4618         EvTransitionEffect *effect = NULL;
4619         cairo_surface_t *surface;
4620
4621         if (EV_IS_DOCUMENT_TRANSITION (view->document))
4622                 effect = ev_document_transition_get_effect (EV_DOCUMENT_TRANSITION (view->document),
4623                                                             view->current_page);
4624         if (!effect)
4625                 return;
4626
4627         view->animation = ev_transition_animation_new (effect);
4628
4629         surface = ev_pixbuf_cache_get_surface (view->pixbuf_cache, view->current_page);
4630         ev_transition_animation_set_origin_surface (view->animation, surface);
4631         surface = ev_pixbuf_cache_get_surface (view->pixbuf_cache, new_page);
4632         if (surface)
4633                 ev_transition_animation_set_dest_surface (view->animation, surface);
4634
4635         g_signal_connect (view->animation, "frame",
4636                           G_CALLBACK (ev_view_transition_animation_frame), view);
4637         g_signal_connect (view->animation, "finished",
4638                           G_CALLBACK (ev_view_transition_animation_finish), view);
4639 }
4640
4641 static void
4642 job_finished_cb (EvPixbufCache *pixbuf_cache,
4643                  GdkRegion     *region,
4644                  EvView        *view)
4645 {
4646         if (view->animation) {
4647                 cairo_surface_t *surface;
4648
4649                 surface = ev_pixbuf_cache_get_surface (pixbuf_cache, view->current_page);
4650                 ev_transition_animation_set_dest_surface (view->animation, surface);
4651         }
4652
4653         if (region) {
4654                 gdk_window_invalidate_region (view->layout.bin_window,
4655                                               region, TRUE);
4656         } else {
4657                 gtk_widget_queue_draw (GTK_WIDGET (view));
4658         }
4659 }
4660
4661 static void
4662 page_changed_cb (EvPageCache *page_cache,
4663                  int          new_page,
4664                  EvView      *view)
4665 {
4666         if (view->current_page != new_page) {
4667                 if (view->presentation)
4668                         ev_view_presentation_animation_start (view, new_page);
4669
4670                 ev_view_change_page (view, new_page, TRUE);
4671         } else {
4672                 gtk_widget_queue_draw (GTK_WIDGET (view));
4673         }
4674
4675         view->find_result = 0;
4676 }
4677
4678 static void
4679 on_adjustment_value_changed (GtkAdjustment *adjustment,
4680                              EvView        *view)
4681 {
4682         int dx = 0, dy = 0;
4683         gint x, y;
4684         GList *children, *l;
4685
4686         if (! GTK_WIDGET_REALIZED (view))
4687                 return;
4688
4689         if (view->hadjustment) {
4690                 dx = view->scroll_x - (int) view->hadjustment->value;
4691                 view->scroll_x = (int) view->hadjustment->value;
4692         } else {
4693                 view->scroll_x = 0;
4694         }
4695
4696         if (view->vadjustment) {
4697                 dy = view->scroll_y - (int) view->vadjustment->value;
4698                 view->scroll_y = (int) view->vadjustment->value;
4699         } else {
4700                 view->scroll_y = 0;
4701         }
4702
4703         children = gtk_container_get_children (GTK_CONTAINER (view));
4704         for (l = children; l && l->data; l = g_list_next (l)) {
4705                 gint       child_x, child_y;
4706                 GtkWidget *child = (GtkWidget *)l->data;
4707
4708                 gtk_container_child_get (GTK_CONTAINER (view),
4709                                          child,
4710                                          "x", &child_x,
4711                                          "y", &child_y,
4712                                          NULL);
4713                 gtk_layout_move (GTK_LAYOUT (view), child, child_x + dx, child_y + dy);
4714         }
4715         g_list_free (children);
4716
4717         for (l = view->window_children; l && l->data; l = g_list_next (l)) {
4718                 EvViewWindowChild *child;
4719
4720                 child = (EvViewWindowChild *)l->data;
4721
4722                 ev_view_window_child_move (view, child, child->x + dx, child->y + dy);
4723         }
4724
4725         if (view->pending_resize)
4726                 gtk_widget_queue_draw (GTK_WIDGET (view));
4727         else
4728                 gdk_window_scroll (view->layout.bin_window, dx, dy);
4729
4730         gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
4731         ev_view_handle_cursor_over_xy (view, x, y);
4732
4733         if (view->document)
4734                 view_update_range_and_current_page (view);
4735 }
4736
4737 GtkWidget*
4738 ev_view_new (void)
4739 {
4740         GtkWidget *view;
4741
4742         view = g_object_new (EV_TYPE_VIEW, NULL);
4743
4744         return view;
4745 }
4746
4747 static void
4748 setup_caches (EvView *view)
4749 {
4750         view->page_cache = ev_page_cache_get (view->document);
4751         g_signal_connect (view->page_cache, "page-changed", G_CALLBACK (page_changed_cb), view);
4752         view->pixbuf_cache = ev_pixbuf_cache_new (GTK_WIDGET (view), view->document);
4753         g_signal_connect (view->pixbuf_cache, "job-finished", G_CALLBACK (job_finished_cb), view);
4754         page_changed_cb (view->page_cache,
4755                          ev_page_cache_get_current_page (view->page_cache),
4756                          view);
4757 }
4758
4759 static void
4760 clear_caches (EvView *view)
4761 {
4762         if (view->pixbuf_cache) {
4763                 g_object_unref (view->pixbuf_cache);
4764                 view->pixbuf_cache = NULL;
4765         }
4766
4767         if (view->page_cache) {
4768                 view->page_cache = NULL;
4769         }
4770 }
4771
4772 void
4773 ev_view_set_loading (EvView       *view,
4774                      gboolean      loading)
4775 {
4776         view->loading = loading;
4777         gtk_widget_queue_draw (GTK_WIDGET (view));
4778 }
4779
4780 static gboolean
4781 ev_view_autoscroll_cb (EvView *view)
4782 {
4783         gdouble speed, value;
4784
4785         /* If the user stops autoscrolling, autoscrolling will be
4786          * set to false but the timeout will continue; stop the timeout: */
4787         if (!view->scroll_info.autoscrolling) {
4788                 view->scroll_info.timeout_id = 0;
4789                 return FALSE;
4790         }
4791
4792         if (view->scroll_info.last_y > view->scroll_info.start_y &&
4793                 (view->scroll_info.last_y < view->scroll_info.start_y))
4794                 return TRUE;
4795
4796         /* Replace 100 with your speed of choice: The lower the faster.
4797          * Replace 3 with another speed of choice: The higher, the faster it accelerated
4798          *      based on the distance of the starting point from the mouse
4799          * (All also effected by the timeout interval of this callback) */
4800
4801         if (view->scroll_info.start_y > view->scroll_info.last_y)
4802                 speed = -pow ((((gdouble)view->scroll_info.start_y - view->scroll_info.last_y) / 100), 3);
4803         else
4804                 speed = pow ((((gdouble)view->scroll_info.last_y - view->scroll_info.start_y) / 100), 3);
4805
4806         value = gtk_adjustment_get_value (view->vadjustment);
4807         value = CLAMP (value + speed, 0, view->vadjustment->upper - view->vadjustment->page_size);
4808         gtk_adjustment_set_value (view->vadjustment, value);
4809
4810         return TRUE;
4811
4812 }
4813
4814 void
4815 ev_view_autoscroll_start (EvView *view)
4816 {
4817         gint x, y;
4818
4819         g_return_if_fail (EV_IS_VIEW (view));
4820
4821         if (view->scroll_info.autoscrolling)
4822                 return;
4823
4824         view->scroll_info.autoscrolling = TRUE;
4825         view->scroll_info.timeout_id =
4826                 g_timeout_add (20, (GSourceFunc)ev_view_autoscroll_cb,
4827                                view);
4828
4829         gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
4830         ev_view_handle_cursor_over_xy (view, x, y);
4831 }
4832
4833 void
4834 ev_view_autoscroll_stop (EvView *view)
4835 {
4836         gint x, y;
4837
4838         g_return_if_fail (EV_IS_VIEW (view));
4839
4840         if (!view->scroll_info.autoscrolling)
4841                 return;
4842
4843         view->scroll_info.autoscrolling = FALSE;
4844         if (view->scroll_info.timeout_id) {
4845                 g_source_remove (view->scroll_info.timeout_id);
4846                 view->scroll_info.timeout_id = 0;
4847         }
4848
4849         gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
4850         ev_view_handle_cursor_over_xy (view, x, y);
4851 }
4852
4853 void
4854 ev_view_set_document (EvView     *view,
4855                       EvDocument *document)
4856 {
4857         g_return_if_fail (EV_IS_VIEW (view));
4858
4859         view->loading = FALSE;
4860
4861         if (document != view->document) {
4862                 clear_caches (view);
4863
4864                 if (view->document) {
4865                         g_object_unref (view->document);
4866                         view->page_cache = NULL;
4867                 }
4868
4869                 view->document = document;
4870                 view->find_result = 0;
4871
4872                 if (view->document) {
4873                         g_object_ref (view->document);
4874                         setup_caches (view);
4875                 }
4876
4877                 view_update_range_and_current_page (view);
4878
4879                 gtk_widget_queue_resize (GTK_WIDGET (view));
4880         }
4881 }
4882
4883 static void
4884 ev_view_reload_page (EvView    *view,
4885                      gint       page,
4886                      GdkRegion *region)
4887 {
4888         ev_pixbuf_cache_reload_page (view->pixbuf_cache,
4889                                      region,
4890                                      page,
4891                                      view->rotation,
4892                                      view->scale);
4893 }
4894
4895 void
4896 ev_view_reload (EvView *view)
4897 {
4898         ev_pixbuf_cache_clear (view->pixbuf_cache);
4899         view_update_range_and_current_page (view);
4900 }
4901
4902 /*** Zoom and sizing mode ***/
4903
4904 #define EPSILON 0.0000001
4905 void
4906 ev_view_set_zoom (EvView   *view,
4907                   double    factor,
4908                   gboolean  relative)
4909 {
4910         double scale;
4911
4912         if (relative)
4913                 scale = view->scale * factor;
4914         else
4915                 scale = factor;
4916
4917         scale = CLAMP (scale,
4918                        view->sizing_mode == EV_SIZING_FREE ? view->min_scale : 0,
4919                        view->max_scale);
4920
4921         if (scale == view->scale)
4922                 return;
4923
4924         if (ABS (view->scale - scale) < EPSILON)
4925                 return;
4926
4927         if (view->loading_text) {
4928                 cairo_surface_destroy (view->loading_text);
4929                 view->loading_text = NULL;
4930         }
4931
4932         view->scale = scale;
4933         view->pending_resize = TRUE;
4934
4935         gtk_widget_queue_resize (GTK_WIDGET (view));
4936
4937         g_object_notify (G_OBJECT (view), "zoom");
4938 }
4939
4940 double
4941 ev_view_get_zoom (EvView *view)
4942 {
4943         return view->scale;
4944 }
4945
4946 void
4947 ev_view_set_screen_dpi (EvView  *view,
4948                         gdouble  dpi)
4949 {
4950         g_return_if_fail (EV_IS_VIEW (view));
4951         g_return_if_fail (dpi > 0);
4952
4953         view->dpi = dpi;
4954         view->min_scale = MIN_SCALE * dpi / 72.0;
4955         view->max_scale = MAX_SCALE * dpi / 72.0;
4956 }
4957
4958 gboolean
4959 ev_view_get_continuous (EvView *view)
4960 {
4961         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
4962
4963         return view->continuous;
4964 }
4965
4966 void
4967 ev_view_set_continuous (EvView   *view,
4968                         gboolean  continuous)
4969 {
4970         g_return_if_fail (EV_IS_VIEW (view));
4971
4972         continuous = continuous != FALSE;
4973
4974         if (view->continuous != continuous) {
4975                 view->continuous = continuous;
4976                 view->pending_scroll = SCROLL_TO_PAGE_POSITION;
4977                 gtk_widget_queue_resize (GTK_WIDGET (view));
4978         }
4979
4980         g_object_notify (G_OBJECT (view), "continuous");
4981 }
4982
4983 gboolean
4984 ev_view_get_dual_page (EvView *view)
4985 {
4986         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
4987
4988         return view->dual_page;
4989 }
4990
4991 void
4992 ev_view_set_dual_page (EvView   *view,
4993                        gboolean  dual_page)
4994 {
4995         g_return_if_fail (EV_IS_VIEW (view));
4996
4997         dual_page = dual_page != FALSE;
4998
4999         if (view->dual_page == dual_page)
5000                 return;
5001
5002         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
5003         view->dual_page = dual_page;
5004         /* FIXME: if we're keeping the pixbuf cache around, we should extend the
5005          * preload_cache_size to be 2 if dual_page is set.
5006          */
5007         gtk_widget_queue_resize (GTK_WIDGET (view));
5008
5009         g_object_notify (G_OBJECT (view), "dual-page");
5010 }
5011
5012 void
5013 ev_view_set_fullscreen (EvView   *view,
5014                          gboolean  fullscreen)
5015 {
5016         g_return_if_fail (EV_IS_VIEW (view));
5017
5018         fullscreen = fullscreen != FALSE;
5019
5020         if (view->fullscreen == fullscreen)
5021                 return;
5022
5023         view->fullscreen = fullscreen;
5024         gtk_widget_queue_resize (GTK_WIDGET (view));
5025
5026         g_object_notify (G_OBJECT (view), "fullscreen");
5027 }
5028
5029 gboolean
5030 ev_view_get_fullscreen (EvView *view)
5031 {
5032         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
5033
5034         return view->fullscreen;
5035 }
5036
5037 void
5038 ev_view_set_presentation (EvView   *view,
5039                           gboolean  presentation)
5040 {
5041         g_return_if_fail (EV_IS_VIEW (view));
5042
5043         presentation = presentation != FALSE;
5044
5045         if (view->presentation == presentation)
5046                 return;
5047
5048         if (!presentation)
5049                 view->presentation_state = EV_PRESENTATION_NORMAL;
5050
5051         view->presentation = presentation;
5052         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
5053
5054         if (presentation) {
5055                 view->sizing_mode_saved = view->sizing_mode;
5056                 view->scale_saved = view->scale;
5057                 ev_view_set_sizing_mode (view, EV_SIZING_BEST_FIT);
5058         } else {
5059                 ev_view_set_sizing_mode (view, view->sizing_mode_saved);
5060                 ev_view_set_zoom (view, view->scale_saved, FALSE);
5061         }
5062
5063         gtk_widget_queue_resize (GTK_WIDGET (view));
5064
5065         if (presentation)
5066                 ev_view_presentation_transition_start (view);
5067         else {
5068                 ev_view_presentation_transition_stop (view);
5069
5070                 if (view->animation) {
5071                         /* stop any running animation */
5072                         ev_view_transition_animation_cancel (view->animation, view);
5073                 }
5074         }
5075
5076         if (GTK_WIDGET_REALIZED (view)) {
5077                 if (view->presentation)
5078                         gdk_window_set_background (view->layout.bin_window,
5079                                                    &GTK_WIDGET (view)->style->black);
5080                 else
5081                         gdk_window_set_background (view->layout.bin_window,
5082                                                    &GTK_WIDGET (view)->style->mid [GTK_STATE_NORMAL]);
5083         }
5084
5085         g_object_notify (G_OBJECT (view), "presentation");
5086 }
5087
5088 gboolean
5089 ev_view_get_presentation (EvView *view)
5090 {
5091         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
5092
5093         return view->presentation;
5094 }
5095
5096 static gboolean
5097 transition_next_page (EvView *view)
5098 {
5099         ev_view_next_page (view);
5100
5101         return FALSE;
5102 }
5103
5104 static void
5105 ev_view_presentation_transition_stop (EvView *view)
5106 {
5107         if (view->trans_timeout_id > 0)
5108                 g_source_remove (view->trans_timeout_id);
5109         view->trans_timeout_id = 0;
5110 }
5111
5112 static void
5113 ev_view_presentation_transition_start (EvView *view)
5114 {
5115         gdouble duration;
5116
5117         if (!EV_IS_DOCUMENT_TRANSITION (view->document))
5118                 return;
5119
5120         ev_view_presentation_transition_stop (view);
5121
5122         duration = ev_document_transition_get_page_duration (EV_DOCUMENT_TRANSITION (view->document),
5123                                                              view->current_page);
5124         if (duration > 0) {
5125                 view->trans_timeout_id =
5126                         g_timeout_add_seconds (duration,
5127                                                (GSourceFunc) transition_next_page,
5128                                                view);
5129         }
5130 }
5131
5132 void
5133 ev_view_set_sizing_mode (EvView       *view,
5134                          EvSizingMode  sizing_mode)
5135 {
5136         g_return_if_fail (EV_IS_VIEW (view));
5137
5138         if (view->sizing_mode == sizing_mode)
5139                 return;
5140
5141         view->sizing_mode = sizing_mode;
5142         gtk_widget_queue_resize (GTK_WIDGET (view));
5143
5144         g_object_notify (G_OBJECT (view), "sizing-mode");
5145 }
5146
5147 EvSizingMode
5148 ev_view_get_sizing_mode (EvView *view)
5149 {
5150         g_return_val_if_fail (EV_IS_VIEW (view), EV_SIZING_FREE);
5151
5152         return view->sizing_mode;
5153 }
5154
5155 gboolean
5156 ev_view_can_zoom_in (EvView *view)
5157 {
5158         return view->scale * ZOOM_IN_FACTOR <= view->max_scale;
5159 }
5160
5161 gboolean
5162 ev_view_can_zoom_out (EvView *view)
5163 {
5164         return view->scale * ZOOM_OUT_FACTOR >= view->min_scale;
5165 }
5166
5167 void
5168 ev_view_zoom_in (EvView *view)
5169 {
5170         g_return_if_fail (view->sizing_mode == EV_SIZING_FREE);
5171
5172         if (view->presentation)
5173                 return;
5174
5175         view->pending_scroll = SCROLL_TO_CENTER;
5176         ev_view_set_zoom (view, ZOOM_IN_FACTOR, TRUE);
5177 }
5178
5179 void
5180 ev_view_zoom_out (EvView *view)
5181 {
5182         g_return_if_fail (view->sizing_mode == EV_SIZING_FREE);
5183
5184         if (view->presentation)
5185                 return;
5186
5187         view->pending_scroll = SCROLL_TO_CENTER;
5188         ev_view_set_zoom (view, ZOOM_OUT_FACTOR, TRUE);
5189 }
5190
5191 void
5192 ev_view_rotate_right (EvView *view)
5193 {
5194         int rotation = view->rotation + 90;
5195
5196         if (rotation >= 360) {
5197                 rotation -= 360;
5198         }
5199
5200         ev_view_set_rotation (view, rotation);
5201 }
5202
5203 void
5204 ev_view_rotate_left (EvView *view)
5205 {
5206         int rotation = view->rotation - 90;
5207
5208         if (rotation < 0) {
5209                 rotation += 360;
5210         }
5211
5212         ev_view_set_rotation (view, rotation);
5213 }
5214
5215 void
5216 ev_view_set_rotation (EvView *view, int rotation)
5217 {
5218         view->rotation = rotation;
5219
5220         if (view->pixbuf_cache) {
5221                 ev_pixbuf_cache_clear (view->pixbuf_cache);
5222                 gtk_widget_queue_resize (GTK_WIDGET (view));
5223         }
5224
5225         if (rotation != 0)
5226                 clear_selection (view);
5227
5228         g_object_notify (G_OBJECT (view), "rotation");
5229 }
5230
5231 int
5232 ev_view_get_rotation (EvView *view)
5233 {
5234         return view->rotation;
5235 }
5236
5237 static double
5238 zoom_for_size_fit_width (int doc_width,
5239                          int doc_height,
5240                          int target_width,
5241                          int target_height,
5242                          int vsb_width)
5243 {
5244         double scale;
5245
5246         scale = (double)target_width / doc_width;
5247
5248         if (doc_height * scale > target_height)
5249                 scale = (double) (target_width - vsb_width) / doc_width;
5250
5251         return scale;
5252 }
5253
5254 static double
5255 zoom_for_size_fit_height (int doc_width,
5256                           int doc_height,
5257                           int target_width,
5258                           int target_height,
5259                           int vsb_height)
5260 {
5261         double scale;
5262
5263         scale = (double)target_height / doc_height;
5264
5265         if (doc_width * scale > target_width)
5266                 scale = (double) (target_height - vsb_height) / doc_height;
5267
5268         return scale;
5269 }
5270
5271 static double
5272 zoom_for_size_best_fit (int doc_width,
5273                         int doc_height,
5274                         int target_width,
5275                         int target_height,
5276                         int vsb_width,
5277                         int hsb_width)
5278 {
5279         double w_scale;
5280         double h_scale;
5281
5282         w_scale = (double)target_width / doc_width;
5283         h_scale = (double)target_height / doc_height;
5284
5285         if (doc_height * w_scale > target_height)
5286                 w_scale = (double) (target_width - vsb_width) / doc_width;
5287         if (doc_width * h_scale > target_width)
5288                 h_scale = (double) (target_height - hsb_width) / doc_height;
5289
5290         return MIN (w_scale, h_scale);
5291 }
5292
5293
5294 static void
5295 ev_view_zoom_for_size_presentation (EvView *view,
5296                                     int     width,
5297                                     int     height)
5298 {
5299         int doc_width, doc_height;
5300         gdouble scale;
5301
5302         ev_page_cache_get_size (view->page_cache,
5303                                 view->current_page,
5304                                 view->rotation,
5305                                 1.0,
5306                                 &doc_width,
5307                                 &doc_height);
5308         scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, 0, 0);
5309         ev_view_set_zoom (view, scale, FALSE);
5310 }
5311
5312 static void
5313 ev_view_zoom_for_size_continuous_and_dual_page (EvView *view,
5314                            int     width,
5315                            int     height,
5316                            int     vsb_width,
5317                            int     hsb_height)
5318 {
5319         int doc_width, doc_height;
5320         GtkBorder border;
5321         gdouble scale;
5322
5323         ev_page_cache_get_max_width (view->page_cache,
5324                                      view->rotation,
5325                                      1.0,
5326                                      &doc_width);
5327         ev_page_cache_get_max_height (view->page_cache,
5328                                       view->rotation,
5329                                       1.0,
5330                                       &doc_height);
5331         compute_border (view, doc_width, doc_height, &border);
5332
5333         doc_width = doc_width * 2;
5334         width -= (2 * (border.left + border.right) + 3 * view->spacing);
5335         height -= (border.top + border.bottom + 2 * view->spacing - 1);
5336
5337         /* FIXME: We really need to calculate the overall height here, not the
5338          * page height.  We assume there's always a vertical scrollbar for
5339          * now.  We need to fix this. */
5340         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
5341                 scale = zoom_for_size_fit_width (doc_width, doc_height, width - vsb_width, height, 0);
5342         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
5343                 scale = zoom_for_size_best_fit (doc_width, doc_height, width - vsb_width, height, 0, hsb_height);
5344         else
5345                 g_assert_not_reached ();
5346
5347         ev_view_set_zoom (view, scale, FALSE);
5348 }
5349
5350 static void
5351 ev_view_zoom_for_size_continuous (EvView *view,
5352                                   int     width,
5353                                   int     height,
5354                                   int     vsb_width,
5355                                   int     hsb_height)
5356 {
5357         int doc_width, doc_height;
5358         GtkBorder border;
5359         gdouble scale;
5360
5361         ev_page_cache_get_max_width (view->page_cache,
5362                                      view->rotation,
5363                                      1.0,
5364                                      &doc_width);
5365         ev_page_cache_get_max_height (view->page_cache,
5366                                       view->rotation,
5367                                       1.0,
5368                                       &doc_height);
5369         compute_border (view, doc_width, doc_height, &border);
5370
5371         width -= (border.left + border.right + 2 * view->spacing);
5372         height -= (border.top + border.bottom + 2 * view->spacing - 1);
5373
5374         /* FIXME: We really need to calculate the overall height here, not the
5375          * page height.  We assume there's always a vertical scrollbar for
5376          * now.  We need to fix this. */
5377         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
5378                 scale = zoom_for_size_fit_width (doc_width, doc_height, width - vsb_width, height, 0);
5379         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
5380                 scale = zoom_for_size_best_fit (doc_width, doc_height, width - vsb_width, height, 0, hsb_height);
5381         else
5382                 g_assert_not_reached ();
5383
5384         ev_view_set_zoom (view, scale, FALSE);
5385 }
5386
5387 static void
5388 ev_view_zoom_for_size_dual_page (EvView *view,
5389                                  int     width,
5390                                  int     height,
5391                                  int     vsb_width,
5392                                  int     hsb_height)
5393 {
5394         GtkBorder border;
5395         gint doc_width, doc_height;
5396         gdouble scale;
5397         gint other_page;
5398
5399         other_page = view->current_page ^ 1;
5400
5401         /* Find the largest of the two. */
5402         ev_page_cache_get_size (view->page_cache,
5403                                 view->current_page,
5404                                 view->rotation,
5405                                 1.0,
5406                                 &doc_width, &doc_height);
5407
5408         if (other_page < ev_page_cache_get_n_pages (view->page_cache)) {
5409                 gint width_2, height_2;
5410                 ev_page_cache_get_size (view->page_cache,
5411                                         other_page,
5412                                         view->rotation,
5413                                         1.0,
5414                                         &width_2, &height_2);
5415                 if (width_2 > doc_width)
5416                         doc_width = width_2;
5417                 if (height_2 > doc_height)
5418                         doc_height = height_2;
5419         }
5420         compute_border (view, doc_width, doc_height, &border);
5421
5422         doc_width = doc_width * 2;
5423         width -= ((border.left + border.right)* 2 + 3 * view->spacing);
5424         height -= (border.top + border.bottom + 2 * view->spacing);
5425
5426         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
5427                 scale = zoom_for_size_fit_width (doc_width, doc_height, width, height, vsb_width);
5428         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
5429                 scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, vsb_width, hsb_height);
5430         else
5431                 g_assert_not_reached ();
5432
5433         ev_view_set_zoom (view, scale, FALSE);
5434 }
5435
5436 static void
5437 ev_view_zoom_for_size_single_page (EvView *view,
5438                                    int     width,
5439                                    int     height,
5440                                    int     vsb_width,
5441                                    int     hsb_height)
5442 {
5443         int doc_width, doc_height;
5444         GtkBorder border;
5445         gdouble scale;
5446
5447         ev_page_cache_get_size (view->page_cache,
5448                                 view->current_page,
5449                                 view->rotation,
5450                                 1.0,
5451                                 &doc_width,
5452                                 &doc_height);
5453         /* Get an approximate border */
5454         compute_border (view, width, height, &border);
5455
5456         width -= (border.left + border.right + 2 * view->spacing);
5457         height -= (border.top + border.bottom + 2 * view->spacing);
5458
5459         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
5460                 scale = zoom_for_size_fit_width (doc_width, doc_height, width, height, vsb_width);
5461         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
5462                 scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, vsb_width, hsb_height);
5463         else
5464                 g_assert_not_reached ();
5465
5466         ev_view_set_zoom (view, scale, FALSE);
5467 }
5468
5469 void
5470 ev_view_set_zoom_for_size (EvView *view,
5471                            int     width,
5472                            int     height,
5473                            int     vsb_width,
5474                            int     hsb_height)
5475 {
5476         g_return_if_fail (EV_IS_VIEW (view));
5477         g_return_if_fail (view->sizing_mode == EV_SIZING_FIT_WIDTH ||
5478                           view->sizing_mode == EV_SIZING_BEST_FIT);
5479         g_return_if_fail (width >= 0);
5480         g_return_if_fail (height >= 0);
5481
5482         if (view->document == NULL)
5483                 return;
5484
5485         if (view->presentation)
5486                 ev_view_zoom_for_size_presentation (view, width, height);
5487         else if (view->continuous && view->dual_page)
5488                 ev_view_zoom_for_size_continuous_and_dual_page (view, width, height, vsb_width, hsb_height);
5489         else if (view->continuous)
5490                 ev_view_zoom_for_size_continuous (view, width, height, vsb_width, hsb_height);
5491         else if (view->dual_page)
5492                 ev_view_zoom_for_size_dual_page (view, width, height, vsb_width, hsb_height);
5493         else
5494                 ev_view_zoom_for_size_single_page (view, width, height, vsb_width, hsb_height);
5495 }
5496
5497 /*** Find ***/
5498 static gint
5499 ev_view_find_get_n_results (EvView *view, gint page)
5500 {
5501         return view->find_pages ? g_list_length (view->find_pages[page]) : 0;
5502 }
5503
5504 static EvRectangle *
5505 ev_view_find_get_result (EvView *view, gint page, gint result)
5506 {
5507         return view->find_pages ? (EvRectangle *) g_list_nth_data (view->find_pages[page], result) : NULL;
5508 }
5509
5510 static void
5511 jump_to_find_result (EvView *view)
5512 {
5513         gint n_results;
5514         gint page = view->current_page;
5515
5516         n_results = ev_view_find_get_n_results (view, page);
5517
5518         if (n_results > 0 && view->find_result < n_results) {
5519                 EvRectangle *rect;
5520                 GdkRectangle view_rect;
5521
5522                 rect = ev_view_find_get_result (view, page, view->find_result);
5523                 doc_rect_to_view_rect (view, page, rect, &view_rect);
5524                 ensure_rectangle_is_visible (view, &view_rect);
5525                 view->jump_to_find_result = FALSE;
5526         }
5527 }
5528
5529 /**
5530  * jump_to_find_page
5531  * @view: #EvView instance
5532  * @direction: Direction to look
5533  * @shift: Shift from current page
5534  *
5535  * Jumps to the first page that has occurences of searched word.
5536  * Uses a direction where to look and a shift from current page.
5537  *
5538  */
5539 static void
5540 jump_to_find_page (EvView *view, EvViewFindDirection direction, gint shift)
5541 {
5542         int n_pages, i;
5543
5544         n_pages = ev_page_cache_get_n_pages (view->page_cache);
5545
5546         for (i = 0; i < n_pages; i++) {
5547                 int page;
5548
5549                 if (direction == EV_VIEW_FIND_NEXT)
5550                         page = view->current_page + i;
5551                 else
5552                         page = view->current_page - i;
5553                 page += shift;
5554
5555                 if (page >= n_pages) {
5556                         page = page - n_pages;
5557                 } else if (page < 0)
5558                         page = page + n_pages;
5559
5560                 if (ev_view_find_get_n_results (view, page) > 0) {
5561                         ev_page_cache_set_current_page (view->page_cache, page);
5562                         break;
5563                 }
5564         }
5565 }
5566
5567 void
5568 ev_view_find_changed (EvView *view, GList **results, gint page)
5569 {
5570         view->find_pages = results;
5571
5572         if (view->jump_to_find_result == TRUE) {
5573                 jump_to_find_page (view, EV_VIEW_FIND_NEXT, 0);
5574                 jump_to_find_result (view);
5575         }
5576
5577         if (view->current_page == page)
5578                 gtk_widget_queue_draw (GTK_WIDGET (view));
5579 }
5580
5581 void
5582 ev_view_find_next (EvView *view)
5583 {
5584         gint n_results;
5585
5586         n_results = ev_view_find_get_n_results (view, view->current_page);
5587         view->find_result++;
5588
5589         if (view->find_result >= n_results) {
5590                 view->find_result = 0;
5591                 jump_to_find_page (view, EV_VIEW_FIND_NEXT, 1);
5592                 jump_to_find_result (view);
5593         } else {
5594                 jump_to_find_result (view);
5595                 gtk_widget_queue_draw (GTK_WIDGET (view));
5596         }
5597 }
5598
5599 void
5600 ev_view_find_previous (EvView *view)
5601 {
5602         view->find_result--;
5603
5604         if (view->find_result < 0) {
5605                 jump_to_find_page (view, EV_VIEW_FIND_PREV, -1);
5606                 view->find_result = MAX (0, ev_view_find_get_n_results (view, view->current_page) - 1);
5607                 jump_to_find_result (view);
5608         } else {
5609                 jump_to_find_result (view);
5610                 gtk_widget_queue_draw (GTK_WIDGET (view));
5611         }
5612 }
5613
5614 void
5615 ev_view_find_search_changed (EvView *view)
5616 {
5617         /* search string has changed, focus on new search result */
5618         view->jump_to_find_result = TRUE;
5619         view->find_pages = NULL;
5620 }
5621
5622 void
5623 ev_view_find_set_highlight_search (EvView *view, gboolean value)
5624 {
5625         view->highlight_find_results = value;
5626         gtk_widget_queue_draw (GTK_WIDGET (view));
5627 }
5628
5629 void
5630 ev_view_find_cancel (EvView *view)
5631 {
5632         view->find_pages = NULL;
5633 }
5634
5635 /*** Selections ***/
5636
5637 /* compute_new_selection_rect/text calculates the area currently selected by
5638  * view_rect.  each handles a different mode;
5639  */
5640 static GList *
5641 compute_new_selection_rect (EvView       *view,
5642                             GdkPoint     *start,
5643                             GdkPoint     *stop)
5644 {
5645         GdkRectangle view_rect;
5646         int n_pages, i;
5647         GList *list = NULL;
5648
5649         g_assert (view->selection_mode == EV_VIEW_SELECTION_RECTANGLE);
5650
5651         view_rect.x = MIN (start->x, stop->x);
5652         view_rect.y = MIN (start->y, stop->y);
5653         view_rect.width = MAX (start->x, stop->x) - view_rect.x;
5654         view_rect.width = MAX (start->y, stop->y) - view_rect.y;
5655
5656         n_pages = ev_page_cache_get_n_pages (view->page_cache);
5657
5658         for (i = 0; i < n_pages; i++) {
5659                 GdkRectangle page_area;
5660                 GtkBorder border;
5661
5662                 if (get_page_extents (view, i, &page_area, &border)) {
5663                         GdkRectangle overlap;
5664
5665                         if (gdk_rectangle_intersect (&page_area, &view_rect, &overlap)) {
5666                                 EvViewSelection *selection;
5667
5668                                 selection = g_new0 (EvViewSelection, 1);
5669                                 selection->page = i;
5670                                 view_rect_to_doc_rect (view, &overlap, &page_area,
5671                                                        &(selection->rect));
5672
5673                                 list = g_list_append (list, selection);
5674                         }
5675                 }
5676         }
5677
5678         return list;
5679 }
5680
5681 static gboolean
5682 gdk_rectangle_point_in (GdkRectangle *rectangle,
5683                         GdkPoint     *point)
5684 {
5685         return rectangle->x <= point->x &&
5686                 rectangle->y <= point->y &&
5687                 point->x < rectangle->x + rectangle->width &&
5688                 point->y < rectangle->y + rectangle->height;
5689 }
5690
5691 static GList *
5692 compute_new_selection_text (EvView          *view,
5693                             EvSelectionStyle style,
5694                             GdkPoint        *start,
5695                             GdkPoint        *stop)
5696 {
5697         int n_pages, i, first, last;
5698         GList *list = NULL;
5699         EvViewSelection *selection;
5700         gint width, height;
5701         int start_page, end_page;
5702
5703         g_assert (view->selection_mode == EV_VIEW_SELECTION_TEXT);
5704
5705         n_pages = ev_page_cache_get_n_pages (view->page_cache);
5706
5707         /* First figure out the range of pages the selection
5708          * affects. */
5709         first = n_pages;
5710         last = 0;
5711         if (view->continuous) {
5712                 start_page = 0;
5713                 end_page = n_pages;
5714         } else if (view->dual_page) {
5715                 start_page = view->start_page;
5716                 end_page = view->end_page + 1;
5717         } else {
5718                 start_page = view->current_page;
5719                 end_page = view->current_page + 1;
5720         }
5721
5722         for (i = start_page; i < end_page; i++) {
5723                 GdkRectangle page_area;
5724                 GtkBorder border;
5725
5726                 get_page_extents (view, i, &page_area, &border);
5727                 if (gdk_rectangle_point_in (&page_area, start) ||
5728                     gdk_rectangle_point_in (&page_area, stop)) {
5729                         if (first == n_pages)
5730                                 first = i;
5731                         last = i;
5732                 }
5733
5734         }
5735
5736         /* Now create a list of EvViewSelection's for the affected
5737          * pages.  This could be an empty list, a list of just one
5738          * page or a number of pages.*/
5739         for (i = first; i < last + 1; i++) {
5740                 GdkRectangle page_area;
5741                 GtkBorder border;
5742                 GdkPoint *point;
5743
5744                 ev_page_cache_get_size (view->page_cache, i,
5745                                         view->rotation,
5746                                         1.0, &width, &height);
5747
5748                 selection = g_new0 (EvViewSelection, 1);
5749                 selection->page = i;
5750                 selection->style = style;
5751                 selection->rect.x1 = selection->rect.y1 = 0;
5752                 selection->rect.x2 = width;
5753                 selection->rect.y2 = height;
5754
5755                 get_page_extents (view, i, &page_area, &border);
5756
5757                 if (gdk_rectangle_point_in (&page_area, start))
5758                         point = start;
5759                 else
5760                         point = stop;
5761
5762                 if (i == first)
5763                         view_point_to_doc_point (view, point, &page_area,
5764                                                  &selection->rect.x1,
5765                                                  &selection->rect.y1);
5766
5767                 /* If the selection is contained within just one page,
5768                  * make sure we don't write 'start' into both points
5769                  * in selection->rect. */
5770                 if (first == last)
5771                         point = stop;
5772
5773                 if (i == last)
5774                         view_point_to_doc_point (view, point, &page_area,
5775                                                  &selection->rect.x2,
5776                                                  &selection->rect.y2);
5777
5778                 list = g_list_append (list, selection);
5779         }
5780
5781         return list;
5782 }
5783
5784 /* This function takes the newly calculated list, and figures out which regions
5785  * have changed.  It then queues a redraw approporiately.
5786  */
5787 static void
5788 merge_selection_region (EvView *view,
5789                         GList  *new_list)
5790 {
5791         GList *old_list;
5792         GList *new_list_ptr, *old_list_ptr;
5793
5794         /* Update the selection */
5795         old_list = ev_pixbuf_cache_get_selection_list (view->pixbuf_cache);
5796         g_list_foreach (view->selection_info.selections, (GFunc)selection_free, NULL);
5797         g_list_free (view->selection_info.selections);
5798         view->selection_info.selections = new_list;
5799         ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, new_list);
5800         g_object_notify (G_OBJECT (view), "has-selection");
5801
5802         new_list_ptr = new_list;
5803         old_list_ptr = old_list;
5804
5805         while (new_list_ptr || old_list_ptr) {
5806                 EvViewSelection *old_sel, *new_sel;
5807                 int cur_page;
5808                 GdkRegion *region = NULL;
5809
5810                 new_sel = (new_list_ptr) ? (new_list_ptr->data) : NULL;
5811                 old_sel = (old_list_ptr) ? (old_list_ptr->data) : NULL;
5812
5813                 /* Assume that the lists are in order, and we run through them
5814                  * comparing them, one page at a time.  We come out with the
5815                  * first page we see. */
5816                 if (new_sel && old_sel) {
5817                         if (new_sel->page < old_sel->page) {
5818                                 new_list_ptr = new_list_ptr->next;
5819                                 old_sel = NULL;
5820                         } else if (new_sel->page > old_sel->page) {
5821                                 old_list_ptr = old_list_ptr->next;
5822                                 new_sel = NULL;
5823                         } else {
5824                                 new_list_ptr = new_list_ptr->next;
5825                                 old_list_ptr = old_list_ptr->next;
5826                         }
5827                 } else if (new_sel) {
5828                         new_list_ptr = new_list_ptr->next;
5829                 } else if (old_sel) {
5830                         old_list_ptr = old_list_ptr->next;
5831                 }
5832
5833                 g_assert (new_sel || old_sel);
5834
5835                 /* is the page we're looking at on the screen?*/
5836                 cur_page = new_sel ? new_sel->page : old_sel->page;
5837                 if (cur_page < view->start_page || cur_page > view->end_page)
5838                         continue;
5839
5840                 /* seed the cache with a new page.  We are going to need the new
5841                  * region too. */
5842                 if (new_sel) {
5843                         GdkRegion *tmp_region = NULL;
5844
5845                         ev_pixbuf_cache_get_selection_surface (view->pixbuf_cache,
5846                                                                cur_page,
5847                                                                view->scale,
5848                                                                &tmp_region);
5849
5850                         if (tmp_region) {
5851                                 new_sel->covered_region = gdk_region_copy (tmp_region);
5852                         }
5853                 }
5854
5855                 /* Now we figure out what needs redrawing */
5856                 if (old_sel && new_sel) {
5857                         if (old_sel->covered_region && new_sel->covered_region) {
5858                                 /* We only want to redraw the areas that have
5859                                  * changed, so we xor the old and new regions
5860                                  * and redraw if it's different */
5861                                 region = gdk_region_copy (old_sel->covered_region);
5862                                 gdk_region_xor (region, new_sel->covered_region);
5863                                 if (gdk_region_empty (region)) {
5864                                         gdk_region_destroy (region);
5865                                         region = NULL;
5866                                 }
5867                         } else if (old_sel->covered_region) {
5868                                 region = gdk_region_copy (old_sel->covered_region);
5869                         } else if (new_sel->covered_region) {
5870                                 region = gdk_region_copy (new_sel->covered_region);
5871                         }
5872                 } else if (old_sel && !new_sel) {
5873                         if (old_sel->covered_region && !gdk_region_empty (old_sel->covered_region)) {
5874                                 region = gdk_region_copy (old_sel->covered_region);
5875                         }
5876                 } else if (!old_sel && new_sel) {
5877                         if (new_sel->covered_region && !gdk_region_empty (new_sel->covered_region)) {
5878                                 region = gdk_region_copy (new_sel->covered_region);
5879                         }
5880                 } else {
5881                         g_assert_not_reached ();
5882                 }
5883
5884                 /* Redraw the damaged region! */
5885                 if (region) {
5886                         GdkRectangle page_area;
5887                         GtkBorder border;
5888
5889                         /* I don't know why but the region is smaller
5890                          * than expected. This hack fixes it, I guess
5891                          * 10 pixels more won't hurt
5892                          */
5893                         gdk_region_shrink (region, -5, -5);
5894
5895                         get_page_extents (view, cur_page, &page_area, &border);
5896                         gdk_region_offset (region,
5897                                            page_area.x + border.left - view->scroll_x,
5898                                            page_area.y + border.top - view->scroll_y);
5899                         gdk_window_invalidate_region (view->layout.bin_window, region, TRUE);
5900                         gdk_region_destroy (region);
5901                 }
5902         }
5903
5904         /* Free the old list, now that we're done with it. */
5905         g_list_foreach (old_list, (GFunc) selection_free, NULL);
5906         g_list_free (old_list);
5907 }
5908
5909 static void
5910 compute_selections (EvView          *view,
5911                     EvSelectionStyle style,
5912                     GdkPoint        *start,
5913                     GdkPoint        *stop)
5914 {
5915         GList *list;
5916
5917         if (view->selection_mode == EV_VIEW_SELECTION_RECTANGLE)
5918                 list = compute_new_selection_rect (view, start, stop);
5919         else
5920                 list = compute_new_selection_text (view, style, start, stop);
5921         merge_selection_region (view, list);
5922 }
5923
5924 /* Free's the selection.  It's up to the caller to queue redraws if needed.
5925  */
5926 static void
5927 selection_free (EvViewSelection *selection)
5928 {
5929         if (selection->covered_region)
5930                 gdk_region_destroy (selection->covered_region);
5931         g_free (selection);
5932 }
5933
5934 static void
5935 clear_selection (EvView *view)
5936 {
5937         g_list_foreach (view->selection_info.selections, (GFunc)selection_free, NULL);
5938         g_list_free (view->selection_info.selections);
5939         view->selection_info.selections = NULL;
5940         view->selection_info.in_selection = FALSE;
5941         if (view->pixbuf_cache)
5942                 ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, NULL);
5943         g_object_notify (G_OBJECT (view), "has-selection");
5944 }
5945
5946 void
5947 ev_view_select_all (EvView *view)
5948 {
5949         GList *selections = NULL;
5950         int n_pages, i;
5951
5952         /* Disable selection on rotated pages for the 0.4.0 series */
5953         if (view->rotation != 0)
5954                 return;
5955
5956         clear_selection (view);
5957
5958         n_pages = ev_page_cache_get_n_pages (view->page_cache);
5959         for (i = 0; i < n_pages; i++) {
5960                 int width, height;
5961                 EvViewSelection *selection;
5962
5963                 ev_page_cache_get_size (view->page_cache,
5964                                         i,
5965                                         view->rotation,
5966                                         1.0, &width, &height);
5967
5968                 selection = g_new0 (EvViewSelection, 1);
5969                 selection->page = i;
5970                 selection->style = EV_SELECTION_STYLE_GLYPH;
5971                 selection->rect.x1 = selection->rect.y1 = 0;
5972                 selection->rect.x2 = width;
5973                 selection->rect.y2 = height;
5974
5975                 selections = g_list_append (selections, selection);
5976         }
5977
5978         merge_selection_region (view, selections);
5979         gtk_widget_queue_draw (GTK_WIDGET (view));
5980 }
5981
5982 gboolean
5983 ev_view_get_has_selection (EvView *view)
5984 {
5985         return view->selection_info.selections != NULL;
5986 }
5987
5988 static char *
5989 get_selected_text (EvView *view)
5990 {
5991         GString *text;
5992         GList *l;
5993         gchar *normalized_text;
5994         EvRenderContext *rc;
5995
5996         text = g_string_new (NULL);
5997         rc = ev_render_context_new (NULL, view->rotation, view->scale);
5998
5999         ev_document_doc_mutex_lock ();
6000
6001         for (l = view->selection_info.selections; l != NULL; l = l->next) {
6002                 EvViewSelection *selection = (EvViewSelection *)l->data;
6003                 EvPage *page;
6004                 gchar *tmp;
6005
6006                 page = ev_document_get_page (view->document, selection->page);
6007                 ev_render_context_set_page (rc, page);
6008                 g_object_unref (page);
6009
6010                 tmp = ev_selection_get_selected_text (EV_SELECTION (view->document),
6011                                                       rc, selection->style,
6012                                                       &(selection->rect));
6013
6014                 g_string_append (text, tmp);
6015                 g_free (tmp);
6016         }
6017
6018         g_object_unref (rc);
6019
6020         ev_document_doc_mutex_unlock ();
6021
6022         normalized_text = g_utf8_normalize (text->str, text->len, G_NORMALIZE_NFKC);
6023         g_string_free (text, TRUE);
6024         return normalized_text;
6025 }
6026
6027 static void
6028 ev_view_clipboard_copy (EvView      *view,
6029                         const gchar *text)
6030 {
6031         GtkClipboard *clipboard;
6032
6033         clipboard = gtk_widget_get_clipboard (GTK_WIDGET (view),
6034                                               GDK_SELECTION_CLIPBOARD);
6035         gtk_clipboard_set_text (clipboard, text, -1);
6036 }
6037
6038 void
6039 ev_view_copy (EvView *ev_view)
6040 {
6041         char *text;
6042
6043         if (!EV_IS_SELECTION (ev_view->document))
6044                 return;
6045
6046         text = get_selected_text (ev_view);
6047         ev_view_clipboard_copy (ev_view, text);
6048         g_free (text);
6049 }
6050
6051 static void
6052 ev_view_primary_get_cb (GtkClipboard     *clipboard,
6053                         GtkSelectionData *selection_data,
6054                         guint             info,
6055                         gpointer          data)
6056 {
6057         EvView *ev_view = EV_VIEW (data);
6058
6059         if (ev_view->link_selected) {
6060                 gtk_selection_data_set_text (selection_data,
6061                                              ev_link_action_get_uri (ev_view->link_selected),
6062                                              -1);
6063         } else if (EV_IS_SELECTION (ev_view->document) &&
6064                    ev_view->selection_info.selections) {
6065                 gchar *text;
6066
6067                 text = get_selected_text (ev_view);
6068                 if (text) {
6069                         gtk_selection_data_set_text (selection_data, text, -1);
6070                         g_free (text);
6071                 }
6072         }
6073 }
6074
6075 static void
6076 ev_view_primary_clear_cb (GtkClipboard *clipboard,
6077                           gpointer      data)
6078 {
6079         EvView *view = EV_VIEW (data);
6080
6081         clear_selection (view);
6082         clear_link_selected (view);
6083 }
6084
6085 static void
6086 ev_view_update_primary_selection (EvView *ev_view)
6087 {
6088         GtkClipboard *clipboard;
6089
6090         clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view),
6091                                               GDK_SELECTION_PRIMARY);
6092
6093         if (ev_view->selection_info.selections || ev_view->link_selected) {
6094                 GtkTargetList *target_list;
6095                 GtkTargetEntry *targets;
6096                 int n_targets;
6097
6098                 target_list = gtk_target_list_new (NULL, 0);
6099                 gtk_target_list_add_text_targets (target_list, 0);
6100                 targets = gtk_target_table_new_from_list (target_list, &n_targets);
6101                 gtk_target_list_unref (target_list);
6102
6103                 if (!gtk_clipboard_set_with_owner (clipboard,
6104                                                    targets, n_targets,
6105                                                    ev_view_primary_get_cb,
6106                                                    ev_view_primary_clear_cb,
6107                                                    G_OBJECT (ev_view)))
6108                         ev_view_primary_clear_cb (clipboard, ev_view);
6109
6110                 gtk_target_table_free (targets, n_targets);
6111         } else {
6112                 if (gtk_clipboard_get_owner (clipboard) == G_OBJECT (ev_view))
6113                         gtk_clipboard_clear (clipboard);
6114         }
6115 }
6116
6117 static void
6118 clear_link_selected (EvView *view)
6119 {
6120         if (view->link_selected) {
6121                 g_object_unref (view->link_selected);
6122                 view->link_selected = NULL;
6123         }
6124 }
6125
6126 void
6127 ev_view_copy_link_address (EvView       *view,
6128                            EvLinkAction *action)
6129 {
6130         clear_link_selected (view);
6131
6132         ev_view_clipboard_copy (view, ev_link_action_get_uri (action));
6133
6134         view->link_selected = g_object_ref (action);
6135         ev_view_update_primary_selection (view);
6136 }
6137
6138 /*** Cursor operations ***/
6139
6140 static GdkCursor *
6141 ev_view_create_invisible_cursor(void)
6142 {
6143        GdkBitmap *empty;
6144        GdkColor black = { 0, 0, 0, 0 };
6145        static char bits[] = { 0x00 };
6146
6147        empty = gdk_bitmap_create_from_data (NULL, bits, 1, 1);
6148
6149        return gdk_cursor_new_from_pixmap (empty, empty, &black, &black, 0, 0);
6150 }
6151
6152 static void
6153 ev_view_set_cursor (EvView *view, EvViewCursor new_cursor)
6154 {
6155         GdkCursor *cursor = NULL;
6156         GdkDisplay *display;
6157         GtkWidget *widget;
6158
6159         if (view->cursor == new_cursor) {
6160                 return;
6161         }
6162
6163         widget = gtk_widget_get_toplevel (GTK_WIDGET (view));
6164         display = gtk_widget_get_display (widget);
6165         view->cursor = new_cursor;
6166
6167         switch (new_cursor) {
6168                 case EV_VIEW_CURSOR_NORMAL:
6169                         gdk_window_set_cursor (view->layout.bin_window, NULL);
6170                         break;
6171                 case EV_VIEW_CURSOR_IBEAM:
6172                         cursor = gdk_cursor_new_for_display (display, GDK_XTERM);
6173                         break;
6174                 case EV_VIEW_CURSOR_LINK:
6175                         cursor = gdk_cursor_new_for_display (display, GDK_HAND2);
6176                         break;
6177                 case EV_VIEW_CURSOR_WAIT:
6178                         cursor = gdk_cursor_new_for_display (display, GDK_WATCH);
6179                         break;
6180                 case EV_VIEW_CURSOR_HIDDEN:
6181                         cursor = ev_view_create_invisible_cursor ();
6182                         break;
6183                 case EV_VIEW_CURSOR_DRAG:
6184                         cursor = gdk_cursor_new_for_display (display, GDK_FLEUR);
6185                         break;
6186                 case EV_VIEW_CURSOR_AUTOSCROLL:
6187                         cursor = gdk_cursor_new_for_display (display, GDK_DOUBLE_ARROW);
6188                         break;
6189         }
6190
6191         if (cursor) {
6192                 gdk_window_set_cursor (view->layout.bin_window, cursor);
6193                 gdk_cursor_unref (cursor);
6194                 gdk_flush();
6195         }
6196 }
6197
6198 void
6199 ev_view_hide_cursor (EvView *view)
6200 {
6201        ev_view_set_cursor (view, EV_VIEW_CURSOR_HIDDEN);
6202 }
6203
6204 void
6205 ev_view_show_cursor (EvView *view)
6206 {
6207        ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
6208 }
6209
6210 static void
6211 ev_view_reset_presentation_state (EvView *view)
6212 {
6213         if (!view->presentation ||
6214             view->presentation_state == EV_PRESENTATION_NORMAL)
6215                 return;
6216
6217         view->presentation_state = EV_PRESENTATION_NORMAL;
6218         gdk_window_set_background (view->layout.bin_window,
6219                                    &GTK_WIDGET (view)->style->black);
6220         gtk_widget_queue_draw (GTK_WIDGET (view));
6221 }
6222
6223 gboolean
6224 ev_view_next_page (EvView *view)
6225 {
6226         int page, n_pages;
6227
6228         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
6229
6230         if (!view->page_cache)
6231                 return FALSE;
6232
6233         if (view->presentation &&
6234             (view->presentation_state == EV_PRESENTATION_BLACK ||
6235              view->presentation_state == EV_PRESENTATION_WHITE)) {
6236                 ev_view_reset_presentation_state (view);
6237                 return FALSE;
6238         }
6239
6240         if (view->animation) {
6241                 ev_view_transition_animation_cancel (view->animation, view);
6242         }
6243
6244         ev_view_presentation_transition_stop (view);
6245         ev_view_reset_presentation_state (view);
6246
6247         page = ev_page_cache_get_current_page (view->page_cache);
6248         n_pages = ev_page_cache_get_n_pages (view->page_cache);
6249
6250         if (view->dual_page && !view->presentation)
6251                 page = page + 2;
6252         else
6253                 page = page + 1;
6254
6255         if (page < n_pages) {
6256                 ev_page_cache_set_current_page (view->page_cache, page);
6257                 return TRUE;
6258         } else if (view->presentation && page == n_pages) {
6259                 view->presentation_state = EV_PRESENTATION_END;
6260                 gtk_widget_queue_draw (GTK_WIDGET (view));
6261                 return TRUE;
6262         } else if (view->dual_page && page == n_pages) {
6263                 ev_page_cache_set_current_page (view->page_cache, page - 1);
6264                 return TRUE;
6265         } else {
6266                 return FALSE;
6267         }
6268 }
6269
6270 gboolean
6271 ev_view_previous_page (EvView *view)
6272 {
6273         int page;
6274
6275         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
6276
6277         if (!view->page_cache)
6278                 return FALSE;
6279
6280         if (view->presentation &&
6281             view->presentation_state == EV_PRESENTATION_END) {
6282                 ev_view_reset_presentation_state (view);
6283                 return TRUE;
6284         }
6285
6286         if (view->presentation &&
6287             (view->presentation_state == EV_PRESENTATION_BLACK ||
6288              view->presentation_state == EV_PRESENTATION_WHITE)) {
6289                 ev_view_reset_presentation_state (view);
6290                 return FALSE;
6291         }
6292
6293         if (view->animation) {
6294                 ev_view_transition_animation_cancel (view->animation, view);
6295         }
6296
6297         ev_view_reset_presentation_state (view);
6298
6299         page = ev_page_cache_get_current_page (view->page_cache);
6300
6301         if (view->dual_page && !view->presentation)
6302                 page = page - 2;
6303         else
6304                 page = page - 1;
6305
6306         if (page >= 0) {
6307                 ev_page_cache_set_current_page (view->page_cache, page);
6308                 return TRUE;
6309         } else if (ev_view_get_dual_page (view) && page == -1) {
6310                 ev_page_cache_set_current_page (view->page_cache, 0);
6311                 return TRUE;
6312         } else {
6313                 return FALSE;
6314         }
6315 }
6316