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