shell/ev-view.c

   1 /* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8; c-indent-level: 8 -*- */
   2 /* this file is part of evince, a gnome document viewer
   3  *
   4  *  Copyright (C) 2004 Red Hat, Inc
   5  *
   6  * Evince is free software; you can redistribute it and/or modify it
   7  * under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * Evince is distributed in the hope that it will be useful, but
  12  * WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
  19  */
  20
  21 #include "config.h"
  22
  23 #include <stdlib.h>
  24 #include <math.h>
  25 #include <string.h>
  26
  27 #include <glib/gi18n.h>
  28 #include <gtk/gtk.h>
  29 #include <gdk/gdkkeysyms.h>
  30
  31 #include "ev-application.h"
  32 #include "ev-document-forms.h"
  33 #include "ev-document-images.h"
  34 #include "ev-document-links.h"
  35 #include "ev-document-misc.h"
  36 #include "ev-document-transition.h"
  37 #include "ev-marshal.h"
  38 #include "ev-page-cache.h"
  39 #include "ev-pixbuf-cache.h"
  40 #include "ev-transition-animation.h"
  41 #include "ev-utils.h"
  42 #include "ev-view.h"
  43 #include "ev-view-private.h"
  44
  45 #define EV_VIEW_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass), EV_TYPE_VIEW, EvViewClass))
  46 #define EV_IS_VIEW_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), EV_TYPE_VIEW))
  47 #define EV_VIEW_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj), EV_TYPE_VIEW, EvViewClass))
  48
  49 enum {
  50         PROP_0,
  51         PROP_CONTINUOUS,
  52         PROP_DUAL_PAGE,
  53         PROP_FULLSCREEN,
  54         PROP_PRESENTATION,
  55         PROP_SIZING_MODE,
  56         PROP_ZOOM,
  57         PROP_ROTATION,
  58         PROP_HAS_SELECTION,
  59 };
  60
  61 enum {
  62         SIGNAL_BINDING_ACTIVATED,
  63         SIGNAL_ZOOM_INVALID,
  64         SIGNAL_HANDLE_LINK,
  65         SIGNAL_EXTERNAL_LINK,
  66         SIGNAL_POPUP_MENU,
  67         N_SIGNALS,
  68 };
  69
  70 enum {
  71         TARGET_DND_URI,
  72         TARGET_DND_TEXT,
  73         TARGET_DND_IMAGE
  74 };
  75
  76 enum {
  77         TARGET_STRING,
  78         TARGET_TEXT,
  79         TARGET_COMPOUND_TEXT,
  80         TARGET_UTF8_STRING,
  81         TARGET_TEXT_BUFFER_CONTENTS
  82 };
  83
  84 static const GtkTargetEntry clipboard_targets[] = {
  85         { "STRING", 0, TARGET_STRING },
  86         { "TEXT",   0, TARGET_TEXT },
  87         { "COMPOUND_TEXT", 0, TARGET_COMPOUND_TEXT },
  88         { "UTF8_STRING", 0, TARGET_UTF8_STRING },
  89 };
  90
  91 static const GtkTargetEntry view_drop_targets[] = {
  92         { "text/uri-list", 0, 0 }
  93 };
  94
  95 static guint signals[N_SIGNALS];
  96
  97 typedef enum {
  98         EV_VIEW_FIND_NEXT,
  99         EV_VIEW_FIND_PREV
 100 } EvViewFindDirection;
 101
 102 #define ZOOM_IN_FACTOR  1.2
 103 #define ZOOM_OUT_FACTOR (1.0/ZOOM_IN_FACTOR)
 104
 105 #define MIN_SCALE 0.05409
 106 #define MAX_SCALE 4.0
 107
 108 #define SCROLL_TIME 150
 109
 110 /*** Scrolling ***/
 111 static void       scroll_to_current_page                     (EvView *view,
 112                                                               GtkOrientation orientation);
 113 static void       ev_view_set_scroll_adjustments             (GtkLayout          *layout,
 114                                                               GtkAdjustment      *hadjustment,
 115                                                               GtkAdjustment      *vadjustment);
 116 static void       view_update_range_and_current_page         (EvView             *view);
 117 static void       set_scroll_adjustment                      (EvView             *view,
 118                                                               GtkOrientation      orientation,
 119                                                               GtkAdjustment      *adjustment);
 120 static void       add_scroll_binding_keypad                  (GtkBindingSet      *binding_set,
 121                                                               guint               keyval,
 122                                                               GdkModifierType modifiers,
 123                                                               GtkScrollType       scroll,
 124                                                               gboolean            horizontal);
 125 static void       ensure_rectangle_is_visible                (EvView             *view,
 126                                                               GdkRectangle       *rect);
 127
 128 /*** Geometry computations ***/
 129 static void       compute_border                             (EvView             *view,
 130                                                               int                 width,
 131                                                               int                 height,
 132                                                               GtkBorder          *border);
 133 static void       get_page_y_offset                          (EvView *view,
 134                                                               int page,
 135                                                               double zoom,
 136                                                               int *y_offset);
 137 static gboolean   get_page_extents                           (EvView             *view,
 138                                                               gint                page,
 139                                                               GdkRectangle       *page_area,
 140                                                               GtkBorder          *border);
 141 static void       view_rect_to_doc_rect                      (EvView             *view,
 142                                                               GdkRectangle       *view_rect,
 143                                                               GdkRectangle       *page_area,
 144                                                               EvRectangle        *doc_rect);
 145 static void       doc_rect_to_view_rect                      (EvView             *view,
 146                                                               int                 page,
 147                                                               EvRectangle        *doc_rect,
 148                                                               GdkRectangle       *view_rect);
 149 static void       find_page_at_location                      (EvView             *view,
 150                                                               gdouble             x,
 151                                                               gdouble             y,
 152                                                               gint               *page,
 153                                                               gint               *x_offset,
 154                                                               gint               *y_offset);
 155 static gboolean  doc_point_to_view_point                     (EvView             *view,
 156                                                               int                 page,
 157                                                               EvPoint            *doc_point,
 158                                                               GdkPoint           *view_point);
 159 /*** Hyperrefs ***/
 160 static EvLink *   ev_view_get_link_at_location               (EvView             *view,
 161                                                               gdouble             x,
 162                                                               gdouble             y);
 163 static char*      tip_from_link                              (EvView             *view,
 164                                                               EvLink             *link);
 165 /*** Forms ***/
 166 static EvFormField *ev_view_get_form_field_at_location       (EvView             *view,
 167                                                                gdouble            x,
 168                                                                gdouble            y);
 169
 170 /*** GtkWidget implementation ***/
 171 static void       ev_view_size_request_continuous_dual_page  (EvView             *view,
 172                                                               GtkRequisition     *requisition);
 173 static void       ev_view_size_request_continuous            (EvView             *view,
 174                                                               GtkRequisition     *requisition);
 175 static void       ev_view_size_request_dual_page             (EvView             *view,
 176                                                               GtkRequisition     *requisition);
 177 static void       ev_view_size_request_single_page           (EvView             *view,
 178                                                               GtkRequisition     *requisition);
 179 static void       ev_view_size_request                       (GtkWidget          *widget,
 180                                                               GtkRequisition     *requisition);
 181 static void       ev_view_size_allocate                      (GtkWidget          *widget,
 182                                                               GtkAllocation      *allocation);
 183 static void       ev_view_realize                            (GtkWidget          *widget);
 184 static gboolean   ev_view_scroll_event                       (GtkWidget          *widget,
 185                                                               GdkEventScroll     *event);
 186 static gboolean   ev_view_expose_event                       (GtkWidget          *widget,
 187                                                               GdkEventExpose     *event);
 188 static gboolean   ev_view_popup_menu                         (GtkWidget          *widget);
 189 static gboolean   ev_view_button_press_event                 (GtkWidget          *widget,
 190                                                               GdkEventButton     *event);
 191 static gboolean   ev_view_motion_notify_event                (GtkWidget          *widget,
 192                                                               GdkEventMotion     *event);
 193 static gboolean   ev_view_button_release_event               (GtkWidget          *widget,
 194                                                               GdkEventButton     *event);
 195 static gboolean   ev_view_enter_notify_event                 (GtkWidget          *widget,
 196                                                               GdkEventCrossing   *event);
 197 static gboolean   ev_view_leave_notify_event                 (GtkWidget          *widget,
 198                                                               GdkEventCrossing   *event);
 199 static void       ev_view_style_set                          (GtkWidget          *widget,
 200                                                               GtkStyle           *old_style);
 201 static void       ev_view_remove_all                         (EvView             *view);
 202
 203 static AtkObject *ev_view_get_accessible                     (GtkWidget *widget);
 204
 205 /*** Drawing ***/
 206 static guint32    ev_gdk_color_to_rgb                        (const GdkColor     *color);
 207 static void       draw_rubberband                            (GtkWidget          *widget,
 208                                                               GdkWindow          *window,
 209                                                               const GdkRectangle *rect,
 210                                                               guchar              alpha);
 211 static void       highlight_find_results                     (EvView             *view,
 212                                                               int                 page);
 213 static void       draw_one_page                              (EvView             *view,
 214                                                               gint                page,
 215                                                               cairo_t            *cr,
 216                                                               GdkRectangle       *page_area,
 217                                                               GtkBorder          *border,
 218                                                               GdkRectangle       *expose_area,
 219                                                               gboolean           *page_ready);
 220 static void       draw_loading_text                          (EvView             *view,
 221                                                               GdkRectangle       *page_area,
 222                                                               GdkRectangle       *expose_area);
 223
 224 /*** Callbacks ***/
 225 static void       job_finished_cb                            (EvPixbufCache      *pixbuf_cache,
 226                                                               GdkRegion          *region,
 227                                                               EvView             *view);
 228 static void       page_changed_cb                            (EvPageCache        *page_cache,
 229                                                               int                 new_page,
 230                                                               EvView             *view);
 231 static void       on_adjustment_value_changed                (GtkAdjustment      *adjustment,
 232                                                               EvView             *view);
 233
 234 /*** GObject ***/
 235 static void       ev_view_finalize                           (GObject            *object);
 236 static void       ev_view_destroy                            (GtkObject          *object);
 237 static void       ev_view_set_property                       (GObject            *object,
 238                                                               guint               prop_id,
 239                                                               const GValue       *value,
 240                                                               GParamSpec         *pspec);
 241 static void       ev_view_get_property                       (GObject            *object,
 242                                                               guint               prop_id,
 243                                                               GValue             *value,
 244                                                               GParamSpec         *pspec);
 245 static void       ev_view_class_init                         (EvViewClass        *class);
 246 static void       ev_view_init                               (EvView             *view);
 247
 248 /*** Zoom and sizing ***/
 249 static double   zoom_for_size_fit_width                      (int doc_width,
 250                                                               int doc_height,
 251                                                               int target_width,
 252                                                               int target_height,
 253                                                               int vsb_width);
 254 static double   zoom_for_size_fit_height                     (int doc_width,
 255                                                               int doc_height,
 256                                                               int target_width,
 257                                                               int target_height,
 258                                                               int vsb_height);
 259 static double   zoom_for_size_best_fit                       (int doc_width,
 260                                                               int doc_height,
 261                                                               int target_width,
 262                                                               int target_height,
 263                                                               int vsb_width,
 264                                                               int hsb_width);
 265 static void     ev_view_zoom_for_size_presentation           (EvView *view,
 266                                                               int     width,
 267                                                               int     height);
 268 static void     ev_view_zoom_for_size_continuous_and_dual_page (EvView *view,
 269                                                                 int     width,
 270                                                                 int     height,
 271                                                                 int     vsb_width,
 272                                                                 int     hsb_height);
 273 static void     ev_view_zoom_for_size_continuous               (EvView *view,
 274                                                                 int     width,
 275                                                                 int     height,
 276                                                                 int     vsb_width,
 277                                                                 int     hsb_height);
 278 static void     ev_view_zoom_for_size_dual_page                (EvView *view,
 279                                                                 int     width,
 280                                                                 int     height,
 281                                                                 int     vsb_width,
 282                                                                 int     hsb_height);
 283 static void     ev_view_zoom_for_size_single_page              (EvView *view,
 284                                                                 int     width,
 285                                                                 int     height,
 286                                                                 int     vsb_width,
 287                                                                 int     hsb_height);
 288 /*** Cursors ***/
 289 static GdkCursor* ev_view_create_invisible_cursor            (void);
 290 static void       ev_view_set_cursor                         (EvView             *view,
 291                                                               EvViewCursor        new_cursor);
 292 static void       ev_view_handle_cursor_over_xy              (EvView *view,
 293                                                               gint x,
 294                                                               gint y);
 295
 296 /*** Find ***/
 297 static gint         ev_view_find_get_n_results               (EvView             *view,
 298                                                               gint                page);
 299 static EvRectangle *ev_view_find_get_result                  (EvView             *view,
 300                                                               gint                page,
 301                                                               gint                result);
 302 static void       jump_to_find_result                        (EvView             *view);
 303 static void       jump_to_find_page                          (EvView             *view,
 304                                                               EvViewFindDirection direction,
 305                                                               gint                shift);
 306
 307 /*** Selection ***/
 308 static void       compute_selections                         (EvView             *view,
 309                                                               EvSelectionStyle    style,
 310                                                               GdkPoint           *start,
 311                                                               GdkPoint           *stop);
 312 static void       clear_selection                            (EvView             *view);
 313 static void       clear_link_selected                        (EvView             *view);
 314 static void       selection_free                             (EvViewSelection    *selection);
 315 static char*      get_selected_text                          (EvView             *ev_view);
 316 static void       ev_view_primary_get_cb                     (GtkClipboard       *clipboard,
 317                                                               GtkSelectionData   *selection_data,
 318                                                               guint               info,
 319                                                               gpointer            data);
 320 static void       ev_view_primary_clear_cb                   (GtkClipboard       *clipboard,
 321                                                               gpointer            data);
 322 static void       ev_view_update_primary_selection           (EvView             *ev_view);
 323
 324 /*** Presentation ***/
 325 static void       ev_view_presentation_transition_start      (EvView             *ev_view);
 326 static void       ev_view_presentation_transition_stop       (EvView             *ev_view);
 327
 328
 329 G_DEFINE_TYPE (EvView, ev_view, GTK_TYPE_LAYOUT)
 330
 331 static void
 332 scroll_to_current_page (EvView *view, GtkOrientation orientation)
 333 {
 334         GdkPoint view_point;
 335
 336         if (view->document == NULL) {
 337                 return;
 338         }
 339
 340         doc_point_to_view_point (view, view->current_page, &view->pending_point, &view_point);
 341
 342         if (orientation == GTK_ORIENTATION_VERTICAL) {
 343                 view->pending_point.y = 0;
 344         } else {
 345                 view->pending_point.x = 0;
 346         }
 347
 348         if (orientation == GTK_ORIENTATION_VERTICAL) {
 349                 if (view->continuous) {
 350                         gtk_adjustment_clamp_page (view->vadjustment,
 351                                                    view_point.y - view->spacing / 2,
 352                                                    view_point.y + view->vadjustment->page_size);
 353                 } else {
 354                         gtk_adjustment_set_value (view->vadjustment,
 355                                                   CLAMP (view_point.y,
 356                                                   view->vadjustment->lower,
 357                                                   view->vadjustment->upper -
 358                                                   view->vadjustment->page_size));
 359                 }
 360         } else {
 361                 if (view->dual_page) {
 362                         gtk_adjustment_clamp_page (view->hadjustment,
 363                                                    view_point.x,
 364                                                    view_point.x + view->hadjustment->page_size);
 365                 } else {
 366                         gtk_adjustment_set_value (view->hadjustment,
 367                                                   CLAMP (view_point.x,
 368                                                   view->hadjustment->lower,
 369                                                   view->hadjustment->upper -
 370                                                   view->hadjustment->page_size));
 371                 }
 372         }
 373 }
 374
 375 static void
 376 view_set_adjustment_values (EvView         *view,
 377                             GtkOrientation  orientation)
 378 {
 379         GtkWidget *widget = GTK_WIDGET (view);
 380         GtkAdjustment *adjustment;
 381         int requisition;
 382         int allocation;
 383
 384         double factor;
 385         gint new_value;
 386
 387         if (orientation == GTK_ORIENTATION_HORIZONTAL)  {
 388                 requisition = widget->requisition.width;
 389                 allocation = widget->allocation.width;
 390                 adjustment = view->hadjustment;
 391         } else {
 392                 requisition = widget->requisition.height;
 393                 allocation = widget->allocation.height;
 394                 adjustment = view->vadjustment;
 395         }
 396
 397         if (!adjustment)
 398                 return;
 399
 400         factor = 1.0;
 401         switch (view->pending_scroll) {
 402                 case SCROLL_TO_KEEP_POSITION:
 403                 case SCROLL_TO_FIND_LOCATION:
 404                         factor = (adjustment->value) / adjustment->upper;
 405                         break;
 406                 case SCROLL_TO_PAGE_POSITION:
 407                         break;
 408                 case SCROLL_TO_CENTER:
 409                         factor = (adjustment->value + adjustment->page_size * 0.5) / adjustment->upper;
 410                         break;
 411         }
 412
 413         adjustment->page_size = allocation;
 414         adjustment->step_increment = allocation * 0.1;
 415         adjustment->page_increment = allocation * 0.9;
 416         adjustment->lower = 0;
 417         adjustment->upper = MAX (allocation, requisition);
 418
 419         /*
 420          * We add 0.5 to the values before to average out our rounding errors.
 421          */
 422         switch (view->pending_scroll) {
 423                 case SCROLL_TO_KEEP_POSITION:
 424                 case SCROLL_TO_FIND_LOCATION:
 425                         new_value = CLAMP (adjustment->upper * factor + 0.5, 0, adjustment->upper - adjustment->page_size);
 426                         gtk_adjustment_set_value (adjustment, (int)new_value);
 427                         break;
 428                 case SCROLL_TO_PAGE_POSITION:
 429                         scroll_to_current_page (view, orientation);
 430                         break;
 431                 case SCROLL_TO_CENTER:
 432                         new_value = CLAMP (adjustment->upper * factor - adjustment->page_size * 0.5 + 0.5,
 433                                            0, adjustment->upper - adjustment->page_size);
 434                         gtk_adjustment_set_value (adjustment, (int)new_value);
 435                         break;
 436         }
 437
 438         gtk_adjustment_changed (adjustment);
 439 }
 440
 441 static void
 442 view_update_range_and_current_page (EvView *view)
 443 {
 444         gint current_page;
 445         gint best_current_page = -1;
 446
 447         /* Presentation trumps all other modes */
 448         if (view->presentation) {
 449                 view->start_page = view->current_page;
 450                 view->end_page = view->current_page;
 451         } else if (view->continuous) {
 452                 GdkRectangle current_area, unused, page_area;
 453                 GtkBorder border;
 454                 gboolean found = FALSE;
 455                 gint area_max = -1, area;
 456                 int i;
 457
 458                 if (!(view->vadjustment && view->hadjustment))
 459                         return;
 460
 461                 current_area.x = view->hadjustment->value;
 462                 current_area.width = view->hadjustment->upper;
 463                 current_area.y = view->vadjustment->value;
 464                 current_area.height = view->vadjustment->page_size;
 465
 466                 for (i = 0; i < ev_page_cache_get_n_pages (view->page_cache); i++) {
 467
 468                         get_page_extents (view, i, &page_area, &border);
 469
 470                         if (gdk_rectangle_intersect (&current_area, &page_area, &unused)) {
 471                                 area = unused.width * unused.height;
 472
 473                                 if (!found) {
 474                                         area_max = area;
 475                                         view->start_page = i;
 476                                         found = TRUE;
 477                                         best_current_page = i;
 478                                 }
 479                                 if (area > area_max) {
 480                                         best_current_page = (area == area_max) ? MIN (i, best_current_page) : i;
 481                                         area_max = area;
 482                                 }
 483
 484                                 view->end_page = i;
 485                         } else if (found && view->current_page <= view->end_page) {
 486                                 break;
 487                         }
 488                 }
 489
 490         } else if (view->dual_page) {
 491                 if (view->current_page % 2 == ev_page_cache_get_dual_even_left (view->page_cache)) {
 492                         view->start_page = view->current_page;
 493                         if (view->current_page + 1 < ev_page_cache_get_n_pages (view->page_cache))
 494                                 view->end_page = view->start_page + 1;
 495                         else
 496                                 view->end_page = view->start_page;
 497                 } else {
 498                         if (view->current_page < 1)
 499                                 view->start_page = view->current_page;
 500                         else
 501                                 view->start_page = view->current_page - 1;
 502                         view->end_page = view->current_page;
 503                 }
 504         } else {
 505                 view->start_page = view->current_page;
 506                 view->end_page = view->current_page;
 507         }
 508
 509         best_current_page = MAX (best_current_page, view->start_page);
 510         current_page = ev_page_cache_get_current_page (view->page_cache);
 511
 512         if ((current_page != best_current_page) && (view->pending_scroll == SCROLL_TO_KEEP_POSITION)) {
 513                 view->current_page = best_current_page;
 514                 ev_page_cache_set_current_page (view->page_cache, best_current_page);
 515         }
 516
 517         ev_pixbuf_cache_set_page_range (view->pixbuf_cache,
 518                                         view->start_page,
 519                                         view->end_page,
 520                                         view->rotation,
 521                                         view->scale,
 522                                         view->selection_info.selections);
 523 }
 524
 525 static void
 526 set_scroll_adjustment (EvView *view,
 527                        GtkOrientation  orientation,
 528                        GtkAdjustment  *adjustment)
 529 {
 530         GtkAdjustment **to_set;
 531
 532         if (orientation == GTK_ORIENTATION_HORIZONTAL)
 533                 to_set = &view->hadjustment;
 534         else
 535                 to_set = &view->vadjustment;
 536
 537         if (*to_set != adjustment) {
 538                 if (*to_set) {
 539                         g_signal_handlers_disconnect_by_func (*to_set,
 540                                                               (gpointer) on_adjustment_value_changed,
 541                                                               view);
 542                         g_object_unref (*to_set);
 543                 }
 544
 545                 *to_set = adjustment;
 546                 view_set_adjustment_values (view, orientation);
 547
 548                 if (*to_set) {
 549                         g_object_ref (*to_set);
 550                         g_signal_connect (*to_set, "value_changed",
 551                                           G_CALLBACK (on_adjustment_value_changed), view);
 552                 }
 553         }
 554 }
 555
 556 static void
 557 ev_view_set_scroll_adjustments (GtkLayout      *layout,
 558                                 GtkAdjustment  *hadjustment,
 559                                 GtkAdjustment  *vadjustment)
 560 {
 561         EvView *view = EV_VIEW (layout);
 562
 563         set_scroll_adjustment (view, GTK_ORIENTATION_HORIZONTAL, hadjustment);
 564         set_scroll_adjustment (view, GTK_ORIENTATION_VERTICAL, vadjustment);
 565
 566         on_adjustment_value_changed (NULL, view);
 567 }
 568
 569 static void
 570 add_scroll_binding_keypad (GtkBindingSet  *binding_set,
 571                            guint           keyval,
 572                            GdkModifierType modifiers,
 573                            GtkScrollType   scroll,
 574                            gboolean        horizontal)
 575 {
 576   guint keypad_keyval = keyval - GDK_Left + GDK_KP_Left;
 577
 578   gtk_binding_entry_add_signal (binding_set, keyval, modifiers,
 579                                 "binding_activated", 2,
 580                                 GTK_TYPE_SCROLL_TYPE, scroll,
 581                                 G_TYPE_BOOLEAN, horizontal);
 582   gtk_binding_entry_add_signal (binding_set, keypad_keyval, modifiers,
 583                                 "binding_activated", 2,
 584                                 GTK_TYPE_SCROLL_TYPE, scroll,
 585                                 G_TYPE_BOOLEAN, horizontal);
 586 }
 587
 588 void
 589 ev_view_scroll (EvView        *view,
 590                 GtkScrollType  scroll,
 591                 gboolean       horizontal)
 592 {
 593         GtkAdjustment *adjustment;
 594         double value, increment;
 595         gboolean first_page = FALSE;
 596         gboolean last_page = FALSE;
 597
 598         view->jump_to_find_result = FALSE;
 599
 600         if (view->presentation || view->sizing_mode == EV_SIZING_BEST_FIT) {
 601                 switch (scroll) {
 602                         case GTK_SCROLL_PAGE_BACKWARD:
 603                         case GTK_SCROLL_STEP_BACKWARD:
 604                                 ev_view_previous_page (view);
 605                                 break;
 606                         case GTK_SCROLL_PAGE_FORWARD:
 607                         case GTK_SCROLL_STEP_FORWARD:
 608                                 ev_view_next_page (view);
 609                                 break;
 610                         default:
 611                                 break;
 612                 }
 613                 return;
 614         }
 615
 616         /* Assign values for increment and vertical adjustment */
 617         adjustment = horizontal ? view->hadjustment : view->vadjustment;
 618         increment = adjustment->page_size * 0.75;
 619         value = adjustment->value;
 620
 621         /* Assign boolean for first and last page */
 622         if (view->current_page == 0)
 623                 first_page = TRUE;
 624         if (view->current_page == ev_page_cache_get_n_pages (view->page_cache) - 1)
 625                 last_page = TRUE;
 626
 627         switch (scroll) {
 628                 case GTK_SCROLL_PAGE_BACKWARD:
 629                         /* Do not jump backwards if at the first page */
 630                         if (value == (adjustment->lower) && first_page) {
 631                                 /* Do nothing */
 632                                 /* At the top of a page, assign the upper bound limit of previous page */
 633                         } else if (value == (adjustment->lower)) {
 634                                 value = adjustment->upper - adjustment->page_size;
 635                                 ev_view_previous_page (view);
 636                                 /* Jump to the top */
 637                         } else {
 638                                 value = MAX (value - increment, adjustment->lower);
 639                         }
 640                         break;
 641                 case GTK_SCROLL_PAGE_FORWARD:
 642                         /* Do not jump forward if at the last page */
 643                         if (value == (adjustment->upper - adjustment->page_size) && last_page) {
 644                                 /* Do nothing */
 645                         /* At the bottom of a page, assign the lower bound limit of next page */
 646                         } else if (value == (adjustment->upper - adjustment->page_size)) {
 647                                 value = 0;
 648                                 ev_view_next_page (view);
 649                         /* Jump to the bottom */
 650                         } else {
 651                                 value = MIN (value + increment, adjustment->upper - adjustment->page_size);
 652                         }
 653                         break;
 654                 case GTK_SCROLL_STEP_BACKWARD:
 655                         value -= adjustment->step_increment;
 656                         break;
 657                 case GTK_SCROLL_STEP_FORWARD:
 658                         value += adjustment->step_increment;
 659                         break;
 660                 case GTK_SCROLL_STEP_DOWN:
 661                         value -= adjustment->step_increment / 10;
 662                         break;
 663                 case GTK_SCROLL_STEP_UP:
 664                         value += adjustment->step_increment / 10;
 665                         break;
 666                 default:
 667                         break;
 668         }
 669
 670         value = CLAMP (value, adjustment->lower,
 671                        adjustment->upper - adjustment->page_size);
 672
 673         gtk_adjustment_set_value (adjustment, value);
 674 }
 675
 676 #define MARGIN 5
 677
 678 static void
 679 ensure_rectangle_is_visible (EvView *view, GdkRectangle *rect)
 680 {
 681         GtkWidget *widget = GTK_WIDGET (view);
 682         GtkAdjustment *adjustment;
 683         int value;
 684
 685         view->pending_scroll = SCROLL_TO_FIND_LOCATION;
 686
 687         adjustment = view->vadjustment;
 688
 689         if (rect->y < adjustment->value) {
 690                 value = MAX (adjustment->lower, rect->y - MARGIN);
 691                 gtk_adjustment_set_value (view->vadjustment, value);
 692         } else if (rect->y + rect->height >
 693                    adjustment->value + widget->allocation.height) {
 694                 value = MIN (adjustment->upper, rect->y + rect->height -
 695                              widget->allocation.height + MARGIN);
 696                 gtk_adjustment_set_value (view->vadjustment, value);
 697         }
 698
 699         adjustment = view->hadjustment;
 700
 701         if (rect->x < adjustment->value) {
 702                 value = MAX (adjustment->lower, rect->x - MARGIN);
 703                 gtk_adjustment_set_value (view->hadjustment, value);
 704         } else if (rect->x + rect->height >
 705                    adjustment->value + widget->allocation.width) {
 706                 value = MIN (adjustment->upper, rect->x + rect->width -
 707                              widget->allocation.width + MARGIN);
 708                 gtk_adjustment_set_value (view->hadjustment, value);
 709         }
 710
 711         gtk_widget_queue_resize (GTK_WIDGET (view));
 712 }
 713
 714 /*** Geometry computations ***/
 715
 716 static void
 717 compute_border (EvView *view, int width, int height, GtkBorder *border)
 718 {
 719         if (view->presentation) {
 720                 border->left = 0;
 721                 border->right = 0;
 722                 border->top = 0;
 723                 border->bottom = 0;
 724         } else {
 725                 ev_document_misc_get_page_border_size (width, height, border);
 726         }
 727 }
 728
 729 static void
 730 get_page_y_offset (EvView *view, int page, double zoom, int *y_offset)
 731 {
 732         int max_width, offset;
 733         GtkBorder border;
 734
 735         g_return_if_fail (y_offset != NULL);
 736
 737         ev_page_cache_get_max_width (view->page_cache, view->rotation, zoom, &max_width);
 738
 739         compute_border (view, max_width, max_width, &border);
 740
 741         if (view->dual_page) {
 742                 ev_page_cache_get_height_to_page (view->page_cache, page,
 743                                                   view->rotation, zoom, NULL, &offset);
 744                 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);
 745         } else {
 746                 ev_page_cache_get_height_to_page (view->page_cache, page,
 747                                                   view->rotation, zoom, &offset, NULL);
 748                 offset += (page + 1) * view->spacing + page * (border.top + border.bottom);
 749         }
 750
 751         *y_offset = offset;
 752         return;
 753 }
 754
 755 static gboolean
 756 get_page_extents (EvView       *view,
 757                   gint          page,
 758                   GdkRectangle *page_area,
 759                   GtkBorder    *border)
 760 {
 761         GtkWidget *widget;
 762         int width, height;
 763
 764         widget = GTK_WIDGET (view);
 765
 766         /* Get the size of the page */
 767         ev_page_cache_get_size (view->page_cache, page,
 768                                 view->rotation,
 769                                 view->scale,
 770                                 &width, &height);
 771         compute_border (view, width, height, border);
 772         page_area->width = width + border->left + border->right;
 773         page_area->height = height + border->top + border->bottom;
 774
 775         if (view->presentation) {
 776                 page_area->x = (MAX (0, widget->allocation.width - width))/2;
 777                 page_area->y = (MAX (0, widget->allocation.height - height))/2;
 778         } else if (view->continuous) {
 779                 gint max_width;
 780                 gint x, y;
 781
 782                 ev_page_cache_get_max_width (view->page_cache, view->rotation,
 783                                              view->scale, &max_width);
 784                 max_width = max_width + border->left + border->right;
 785                 /* Get the location of the bounding box */
 786                 if (view->dual_page) {
 787                         x = view->spacing + ((page % 2 == ev_page_cache_get_dual_even_left (view->page_cache)) ? 0 : 1) * (max_width + view->spacing);
 788                         x = x + MAX (0, widget->allocation.width - (max_width * 2 + view->spacing * 3)) / 2;
 789                         if (page % 2 == ev_page_cache_get_dual_even_left (view->page_cache))
 790                                 x = x + (max_width - width - border->left - border->right);
 791                 } else {
 792                         x = view->spacing;
 793                         x = x + MAX (0, widget->allocation.width - (width + view->spacing * 2)) / 2;
 794                 }
 795
 796                 get_page_y_offset (view, page, view->scale, &y);
 797
 798                 page_area->x = x;
 799                 page_area->y = y;
 800         } else {
 801                 gint x, y;
 802                 if (view->dual_page) {
 803                         gint width_2, height_2;
 804                         gint max_width = width;
 805                         gint max_height = height;
 806                         GtkBorder overall_border;
 807                         gint other_page;
 808
 809                         other_page = (page % 2 == ev_page_cache_get_dual_even_left (view->page_cache)) ? page + 1: page - 1;
 810
 811                         /* First, we get the bounding box of the two pages */
 812                         if (other_page < ev_page_cache_get_n_pages (view->page_cache)
 813                             && (0 <= other_page)) {
 814                                 ev_page_cache_get_size (view->page_cache,
 815                                                         other_page,
 816                                                         view->rotation,
 817                                                         view->scale,
 818                                                         &width_2, &height_2);
 819                                 if (width_2 > width)
 820                                         max_width = width_2;
 821                                 if (height_2 > height)
 822                                         max_height = height_2;
 823                         }
 824                         compute_border (view, max_width, max_height, &overall_border);
 825
 826                         /* Find the offsets */
 827                         x = view->spacing;
 828                         y = view->spacing;
 829
 830                         /* Adjust for being the left or right page */
 831                         if (page % 2 == ev_page_cache_get_dual_even_left (view->page_cache))
 832                                 x = x + max_width - width;
 833                         else
 834                                 x = x + (max_width + overall_border.left + overall_border.right) + view->spacing;
 835
 836                         y = y + (max_height - height)/2;
 837
 838                         /* Adjust for extra allocation */
 839                         x = x + MAX (0, widget->allocation.width -
 840                                      ((max_width + overall_border.left + overall_border.right) * 2 + view->spacing * 3))/2;
 841                         y = y + MAX (0, widget->allocation.height - (height + view->spacing * 2))/2;
 842                 } else {
 843                         x = view->spacing;
 844                         y = view->spacing;
 845
 846                         /* Adjust for extra allocation */
 847                         x = x + MAX (0, widget->allocation.width - (width + border->left + border->right + view->spacing * 2))/2;
 848                         y = y + MAX (0, widget->allocation.height - (height + border->top + border->bottom +  view->spacing * 2))/2;
 849                 }
 850
 851                 page_area->x = x;
 852                 page_area->y = y;
 853         }
 854
 855         return TRUE;
 856 }
 857
 858 static void
 859 view_point_to_doc_point (EvView *view,
 860                          GdkPoint *view_point,
 861                          GdkRectangle *page_area,
 862                          double  *doc_point_x,
 863                          double  *doc_point_y)
 864 {
 865         *doc_point_x = (double) (view_point->x - page_area->x) / view->scale;
 866         *doc_point_y = (double) (view_point->y - page_area->y) / view->scale;
 867 }
 868
 869 static void
 870 view_rect_to_doc_rect (EvView *view,
 871                        GdkRectangle *view_rect,
 872                        GdkRectangle *page_area,
 873                        EvRectangle  *doc_rect)
 874 {
 875         doc_rect->x1 = (double) (view_rect->x - page_area->x) / view->scale;
 876         doc_rect->y1 = (double) (view_rect->y - page_area->y) / view->scale;
 877         doc_rect->x2 = doc_rect->x1 + (double) view_rect->width / view->scale;
 878         doc_rect->y2 = doc_rect->y1 + (double) view_rect->height / view->scale;
 879 }
 880
 881 static gboolean
 882 doc_point_to_view_point (EvView       *view,
 883                          int           page,
 884                          EvPoint      *doc_point,
 885                          GdkPoint     *view_point)
 886 {
 887         GdkRectangle page_area;
 888         GtkBorder border;
 889         double x, y, view_x, view_y;
 890         int width, height;
 891
 892         ev_page_cache_get_size (view->page_cache, page,
 893                                 view->rotation,
 894                                 1.0,
 895                                 &width, &height);
 896
 897         if (view->rotation == 0) {
 898                 x = doc_point->x;
 899                 y = doc_point->y;
 900         } else if (view->rotation == 90) {
 901                 x = width - doc_point->y;
 902                 y = doc_point->x;
 903         } else if (view->rotation == 180) {
 904                 x = width - doc_point->x;
 905                 y = height - doc_point->y;
 906         } else if (view->rotation == 270) {
 907                 x = doc_point->y;
 908                 y = height - doc_point->x;
 909         } else {
 910                 g_assert_not_reached ();
 911         }
 912
 913         get_page_extents (view, page, &page_area, &border);
 914
 915         view_x = x * view->scale;
 916         view_y = y * view->scale;
 917         view_point->x = view_x + page_area.x;
 918         view_point->y = view_y + page_area.y;
 919
 920         return (view_x > 0 && view_x <= page_area.width &&
 921                 view_y > 0 && view_y <= page_area.height);
 922 }
 923
 924 static void
 925 doc_rect_to_view_rect (EvView       *view,
 926                        int           page,
 927                        EvRectangle  *doc_rect,
 928                        GdkRectangle *view_rect)
 929 {
 930         GdkRectangle page_area;
 931         GtkBorder border;
 932         double x, y, w, h;
 933         int width, height;
 934
 935         ev_page_cache_get_size (view->page_cache, page,
 936                                 view->rotation,
 937                                 1.0,
 938                                 &width, &height);
 939
 940         if (view->rotation == 0) {
 941                 x = doc_rect->x1;
 942                 y = doc_rect->y1;
 943                 w = doc_rect->x2 - doc_rect->x1;
 944                 h = doc_rect->y2 - doc_rect->y1;
 945         } else if (view->rotation == 90) {
 946                 x = width - doc_rect->y2;
 947                 y = doc_rect->x1;
 948                 w = doc_rect->y2 - doc_rect->y1;
 949                 h = doc_rect->x2 - doc_rect->x1;
 950         } else if (view->rotation == 180) {
 951                 x = width - doc_rect->x2;
 952                 y = height - doc_rect->y2;
 953                 w = doc_rect->x2 - doc_rect->x1;
 954                 h = doc_rect->y2 - doc_rect->y1;
 955         } else if (view->rotation == 270) {
 956                 x = doc_rect->y1;
 957                 y = height - doc_rect->x2;
 958                 w = doc_rect->y2 - doc_rect->y1;
 959                 h = doc_rect->x2 - doc_rect->x1;
 960         } else {
 961                 g_assert_not_reached ();
 962         }
 963
 964         get_page_extents (view, page, &page_area, &border);
 965
 966         view_rect->x = x * view->scale + page_area.x;
 967         view_rect->y = y * view->scale + page_area.y;
 968         view_rect->width = w * view->scale;
 969         view_rect->height = h * view->scale;
 970 }
 971
 972 static void
 973 find_page_at_location (EvView  *view,
 974                        gdouble  x,
 975                        gdouble  y,
 976                        gint    *page,
 977                        gint    *x_offset,
 978                        gint    *y_offset)
 979 {
 980         int i;
 981
 982         if (view->document == NULL)
 983                 return;
 984
 985         g_assert (page);
 986         g_assert (x_offset);
 987         g_assert (y_offset);
 988
 989         for (i = view->start_page; i <= view->end_page; i++) {
 990                 GdkRectangle page_area;
 991                 GtkBorder border;
 992
 993                 if (! get_page_extents (view, i, &page_area, &border))
 994                         continue;
 995
 996                 if ((x >= page_area.x + border.left) &&
 997                     (x < page_area.x + page_area.width - border.right) &&
 998                     (y >= page_area.y + border.top) &&
 999                     (y < page_area.y + page_area.height - border.bottom)) {
1000                         *page = i;
1001                         *x_offset = x - (page_area.x + border.left);
1002                         *y_offset = y - (page_area.y + border.top);
1003                         return;
1004                 }
1005         }
1006
1007         *page = -1;
1008 }
1009
1010 static gboolean
1011 location_in_text (EvView  *view,
1012                   gdouble  x,
1013                   gdouble  y)
1014 {
1015         GdkRegion *region;
1016         gint page = -1;
1017         gint x_offset = 0, y_offset = 0;
1018
1019         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1020
1021         if (page == -1)
1022                 return FALSE;
1023
1024         region = ev_pixbuf_cache_get_text_mapping (view->pixbuf_cache, page);
1025
1026         if (region)
1027                 return gdk_region_point_in (region, x_offset / view->scale, y_offset / view->scale);
1028         else
1029                 return FALSE;
1030 }
1031
1032 static int
1033 ev_view_get_width (EvView *view)
1034 {
1035         return GTK_WIDGET (view)->allocation.width;
1036 }
1037
1038 static int
1039 ev_view_get_height (EvView *view)
1040 {
1041         return GTK_WIDGET (view)->allocation.height;
1042 }
1043
1044 static gboolean
1045 location_in_selected_text (EvView  *view,
1046                            gdouble  x,
1047                            gdouble  y)
1048 {
1049         gint page = -1;
1050         gint x_offset = 0, y_offset = 0;
1051         EvViewSelection *selection;
1052         GList *l = NULL;
1053
1054         for (l = view->selection_info.selections; l != NULL; l = l->next) {
1055                 selection = (EvViewSelection *)l->data;
1056
1057                 find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1058
1059                 if (page != selection->page)
1060                         continue;
1061
1062                 if (selection->covered_region &&
1063                     gdk_region_point_in (selection->covered_region, x_offset, y_offset))
1064                         return TRUE;
1065         }
1066
1067         return FALSE;
1068 }
1069
1070 static gboolean
1071 get_doc_point_from_offset (EvView *view,
1072                            gint    page,
1073                            gint    x_offset,
1074                            gint    y_offset,
1075                            gint   *x_new,
1076                            gint   *y_new)
1077 {
1078         int width, height;
1079         double x, y;
1080
1081         ev_page_cache_get_size (view->page_cache, page,
1082                                 view->rotation,
1083                                 1.0,
1084                                 &width, &height);
1085
1086         x_offset = x_offset / view->scale;
1087         y_offset = y_offset / view->scale;
1088
1089         if (view->rotation == 0) {
1090                 x = x_offset;
1091                 y = y_offset;
1092         } else if (view->rotation == 90) {
1093                 x = y_offset;
1094                 y = width - x_offset;
1095         } else if (view->rotation == 180) {
1096                 x = width - x_offset;
1097                 y = height - y_offset;
1098         } else if (view->rotation == 270) {
1099                 x = height - y_offset;
1100                 y = x_offset;
1101         } else {
1102                 g_assert_not_reached ();
1103         }
1104
1105         *x_new = x;
1106         *y_new = y;
1107
1108         return TRUE;
1109 }
1110
1111 /*** Hyperref ***/
1112 static EvLink *
1113 ev_view_get_link_at_location (EvView  *view,
1114                               gdouble  x,
1115                               gdouble  y)
1116 {
1117         gint page = -1;
1118         gint x_offset = 0, y_offset = 0;
1119         gint x_new = 0, y_new = 0;
1120         GList *link_mapping;
1121
1122         if (!EV_IS_DOCUMENT_LINKS (view->document))
1123                 return NULL;
1124
1125         x += view->scroll_x;
1126         y += view->scroll_y;
1127
1128         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1129
1130         if (page == -1)
1131                 return NULL;
1132
1133
1134         if (get_doc_point_from_offset (view, page, x_offset,
1135                                        y_offset, &x_new, &y_new) == FALSE)
1136                 return NULL;
1137
1138         link_mapping = ev_pixbuf_cache_get_link_mapping (view->pixbuf_cache, page);
1139
1140         if (link_mapping)
1141                 return ev_link_mapping_find (link_mapping, x_new, y_new);
1142         else
1143                 return NULL;
1144 }
1145
1146 static void
1147 goto_fitr_dest (EvView *view, EvLinkDest *dest)
1148 {
1149         EvPoint doc_point;
1150         gdouble zoom, left, top;
1151         gboolean change_left, change_top;
1152
1153         left = ev_link_dest_get_left (dest, &change_left);
1154         top = ev_link_dest_get_top (dest, &change_top);
1155
1156         zoom = zoom_for_size_best_fit (ev_link_dest_get_right (dest) - left,
1157                                        ev_link_dest_get_bottom (dest) - top,
1158                                        ev_view_get_width (view),
1159                                        ev_view_get_height (view), 0, 0);
1160
1161         ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1162         ev_view_set_zoom (view, zoom, FALSE);
1163
1164         doc_point.x = change_left ? left : 0;
1165         doc_point.y = change_top ? top : 0;
1166
1167         view->current_page = ev_link_dest_get_page (dest);
1168         if (change_left || change_top)
1169                 view->pending_point = doc_point;
1170         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1171
1172         gtk_widget_queue_resize (GTK_WIDGET (view));
1173 }
1174
1175 static void
1176 goto_fitv_dest (EvView *view, EvLinkDest *dest)
1177 {
1178         EvPoint doc_point;
1179         int doc_width, doc_height, page;
1180         double zoom, left;
1181         gboolean change_left;
1182
1183         page = ev_link_dest_get_page (dest);
1184         ev_page_cache_get_size (view->page_cache, page, 0, 1.0, &doc_width, &doc_height);
1185
1186         left = ev_link_dest_get_left (dest, &change_left);
1187         doc_point.x = change_left ? left : 0;
1188         doc_point.y = 0;
1189
1190         zoom = zoom_for_size_fit_height (doc_width - doc_point.x , doc_height,
1191                                          ev_view_get_width (view),
1192                                          ev_view_get_height (view), 0);
1193
1194         ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1195         ev_view_set_zoom (view, zoom, FALSE);
1196
1197         view->current_page = page;
1198         if (change_left)
1199                 view->pending_point = doc_point;
1200         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1201
1202         gtk_widget_queue_resize (GTK_WIDGET (view));
1203 }
1204
1205 static void
1206 goto_fith_dest (EvView *view, EvLinkDest *dest)
1207 {
1208         EvPoint doc_point;
1209         int doc_width, doc_height, page;
1210         gdouble zoom, top;
1211         gboolean change_top;
1212
1213         page = ev_link_dest_get_page (dest);
1214         ev_page_cache_get_size (view->page_cache, page, 0, 1.0, &doc_width, &doc_height);
1215
1216         top = ev_link_dest_get_top (dest, &change_top);
1217
1218         doc_point.x = 0;
1219         doc_point.y = change_top ? top : 0;
1220
1221         zoom = zoom_for_size_fit_width (doc_width, top,
1222                                         ev_view_get_width (view),
1223                                         ev_view_get_height (view), 0);
1224
1225         ev_view_set_sizing_mode (view, EV_SIZING_FIT_WIDTH);
1226         ev_view_set_zoom (view, zoom, FALSE);
1227
1228         view->current_page = page;
1229         if (change_top)
1230                 view->pending_point = doc_point;
1231         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1232
1233         gtk_widget_queue_resize (GTK_WIDGET (view));
1234 }
1235
1236 static void
1237 goto_fit_dest (EvView *view, EvLinkDest *dest)
1238 {
1239         double zoom;
1240         int doc_width, doc_height;
1241         int page;
1242
1243         page = ev_link_dest_get_page (dest);
1244         ev_page_cache_get_size (view->page_cache, page, 0, 1.0, &doc_width, &doc_height);
1245
1246         zoom = zoom_for_size_best_fit (doc_width, doc_height, ev_view_get_width (view),
1247                                        ev_view_get_height (view), 0, 0);
1248
1249         ev_view_set_sizing_mode (view, EV_SIZING_BEST_FIT);
1250         ev_view_set_zoom (view, zoom, FALSE);
1251
1252         view->current_page = page;
1253         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1254
1255         gtk_widget_queue_resize (GTK_WIDGET (view));
1256 }
1257
1258 static void
1259 goto_xyz_dest (EvView *view, EvLinkDest *dest)
1260 {
1261         EvPoint doc_point;
1262         gint page;
1263         gdouble zoom, left, top;
1264         gboolean change_zoom, change_left, change_top;
1265
1266         zoom = ev_link_dest_get_zoom (dest, &change_zoom);
1267         page = ev_link_dest_get_page (dest);
1268
1269         if (change_zoom && zoom > 1) {
1270                 ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1271                 ev_view_set_zoom (view, zoom, FALSE);
1272         }
1273
1274         left = ev_link_dest_get_left (dest, &change_left);
1275         top = ev_link_dest_get_top (dest, &change_top);
1276
1277         doc_point.x = change_left ? left : 0;
1278         doc_point.y = change_top ? top : 0;
1279
1280         view->current_page = page;
1281         if (change_left || change_top)
1282                 view->pending_point = doc_point;
1283         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1284
1285         gtk_widget_queue_resize (GTK_WIDGET (view));
1286 }
1287
1288 static void
1289 goto_dest (EvView *view, EvLinkDest *dest)
1290 {
1291         EvLinkDestType type;
1292         int page, n_pages, current_page;
1293
1294         page = ev_link_dest_get_page (dest);
1295         n_pages = ev_page_cache_get_n_pages (view->page_cache);
1296
1297         if (page < 0 || page >= n_pages)
1298                 return;
1299
1300         current_page = view->current_page;
1301
1302         type = ev_link_dest_get_dest_type (dest);
1303
1304         switch (type) {
1305                 case EV_LINK_DEST_TYPE_PAGE:
1306                         ev_page_cache_set_current_page (view->page_cache, page);
1307                         break;
1308                 case EV_LINK_DEST_TYPE_FIT:
1309                         goto_fit_dest (view, dest);
1310                         break;
1311                 case EV_LINK_DEST_TYPE_FITH:
1312                         goto_fith_dest (view, dest);
1313                         break;
1314                 case EV_LINK_DEST_TYPE_FITV:
1315                         goto_fitv_dest (view, dest);
1316                         break;
1317                 case EV_LINK_DEST_TYPE_FITR:
1318                         goto_fitr_dest (view, dest);
1319                         break;
1320                 case EV_LINK_DEST_TYPE_XYZ:
1321                         goto_xyz_dest (view, dest);
1322                         break;
1323                 case EV_LINK_DEST_TYPE_PAGE_LABEL:
1324                         ev_page_cache_set_page_label (view->page_cache, ev_link_dest_get_page_label (dest));
1325                         break;
1326                 default:
1327                         g_assert_not_reached ();
1328         }
1329
1330         if (current_page != view->current_page)
1331                 ev_page_cache_set_current_page (view->page_cache,
1332                                                 view->current_page);
1333 }
1334
1335 static void
1336 ev_view_goto_dest (EvView *view, EvLinkDest *dest)
1337 {
1338         EvLinkDestType type;
1339
1340         type = ev_link_dest_get_dest_type (dest);
1341
1342         if (type == EV_LINK_DEST_TYPE_NAMED) {
1343                 EvLinkDest  *dest2;
1344                 const gchar *named_dest;
1345
1346                 named_dest = ev_link_dest_get_named_dest (dest);
1347                 dest2 = ev_document_links_find_link_dest (EV_DOCUMENT_LINKS (view->document),
1348                                                           named_dest);
1349                 if (dest2) {
1350                         goto_dest (view, dest2);
1351                         g_object_unref (dest2);
1352                 }
1353
1354                 return;
1355         }
1356
1357         goto_dest (view, dest);
1358 }
1359
1360 void
1361 ev_view_handle_link (EvView *view, EvLink *link)
1362 {
1363         EvLinkAction    *action = NULL;
1364         EvLinkActionType type;
1365
1366         action = ev_link_get_action (link);
1367         if (!action)
1368                 return;
1369
1370         type = ev_link_action_get_action_type (action);
1371
1372         switch (type) {
1373                 case EV_LINK_ACTION_TYPE_GOTO_DEST: {
1374                         EvLinkDest *dest;
1375
1376                         g_signal_emit (view, signals[SIGNAL_HANDLE_LINK], 0, link);
1377
1378                         dest = ev_link_action_get_dest (action);
1379                         ev_view_goto_dest (view, dest);
1380                 }
1381                         break;
1382                 case EV_LINK_ACTION_TYPE_GOTO_REMOTE:
1383                 case EV_LINK_ACTION_TYPE_EXTERNAL_URI:
1384                 case EV_LINK_ACTION_TYPE_LAUNCH:
1385                 case EV_LINK_ACTION_TYPE_NAMED:
1386                         g_signal_emit (view, signals[SIGNAL_EXTERNAL_LINK], 0, action);
1387                         break;
1388         }
1389 }
1390
1391 gchar *
1392 ev_view_page_label_from_dest (EvView *view, EvLinkDest *dest)
1393 {
1394         EvLinkDestType type;
1395         gchar *msg = NULL;
1396
1397         type = ev_link_dest_get_dest_type (dest);
1398
1399         switch (type) {
1400                 case EV_LINK_DEST_TYPE_NAMED: {
1401                         EvLinkDest  *dest2;
1402                         const gchar *named_dest;
1403
1404                         named_dest = ev_link_dest_get_named_dest (dest);
1405                         dest2 = ev_document_links_find_link_dest (EV_DOCUMENT_LINKS (view->document),
1406                                                                   named_dest);
1407                         if (dest2) {
1408                                 msg = ev_page_cache_get_page_label (view->page_cache,
1409                                                                     ev_link_dest_get_page (dest2));
1410                                 g_object_unref (dest2);
1411                         }
1412                 }
1413
1414                         break;
1415                 case EV_LINK_DEST_TYPE_PAGE_LABEL: {
1416                         msg = g_strdup (ev_link_dest_get_page_label (dest));
1417                 }
1418                         break;
1419                 default:
1420                         msg = ev_page_cache_get_page_label (view->page_cache,
1421                                                             ev_link_dest_get_page (dest));
1422         }
1423
1424         return msg;
1425 }
1426
1427 static char *
1428 tip_from_action_named (EvLinkAction *action)
1429 {
1430         const gchar *name = ev_link_action_get_name (action);
1431
1432         if (g_ascii_strcasecmp (name, "FirstPage") == 0) {
1433                 return g_strdup (_("Go to first page"));
1434         } else if (g_ascii_strcasecmp (name, "PrevPage") == 0) {
1435                 return g_strdup (_("Go to previous page"));
1436         } else if (g_ascii_strcasecmp (name, "NextPage") == 0) {
1437                 return g_strdup (_("Go to next page"));
1438         } else if (g_ascii_strcasecmp (name, "LastPage") == 0) {
1439                 return g_strdup (_("Go to last page"));
1440         } else if (g_ascii_strcasecmp (name, "GoToPage") == 0) {
1441                 return g_strdup (_("Go to page"));
1442         } else if (g_ascii_strcasecmp (name, "Find") == 0) {
1443                 return g_strdup (_("Find"));
1444         }
1445
1446         return NULL;
1447 }
1448
1449 static char *
1450 tip_from_link (EvView *view, EvLink *link)
1451 {
1452         EvLinkAction *action;
1453         EvLinkActionType type;
1454         char *msg = NULL;
1455         char *page_label;
1456         const char *title;
1457
1458         action = ev_link_get_action (link);
1459         title = ev_link_get_title (link);
1460
1461         if (!action)
1462                 return title ? g_strdup (title) : NULL;
1463
1464         type = ev_link_action_get_action_type (action);
1465
1466         switch (type) {
1467                 case EV_LINK_ACTION_TYPE_GOTO_DEST:
1468                         page_label = ev_view_page_label_from_dest (view,
1469                                                                    ev_link_action_get_dest (action));
1470                         if (page_label) {
1471                                 msg = g_strdup_printf (_("Go to page %s"), page_label);
1472                                 g_free (page_label);
1473                         }
1474                         break;
1475                 case EV_LINK_ACTION_TYPE_GOTO_REMOTE:
1476                         if (title) {
1477                                 msg = g_strdup_printf (_("Go to %s on file “%s”"), title,
1478                                                        ev_link_action_get_filename (action));
1479                         } else {
1480                                 msg = g_strdup_printf (_("Go to file “%s”"),
1481                                                        ev_link_action_get_filename (action));
1482                         }
1483                         break;
1484                 case EV_LINK_ACTION_TYPE_EXTERNAL_URI:
1485                         msg = g_strdup (ev_link_action_get_uri (action));
1486                         break;
1487                 case EV_LINK_ACTION_TYPE_LAUNCH:
1488                         msg = g_strdup_printf (_("Launch %s"),
1489                                                ev_link_action_get_filename (action));
1490                         break;
1491                 case EV_LINK_ACTION_TYPE_NAMED:
1492                         msg = tip_from_action_named (action);
1493                         break;
1494                 default:
1495                         if (title)
1496                                 msg = g_strdup (title);
1497                         break;
1498         }
1499
1500         return msg;
1501 }
1502
1503 static void
1504 ev_view_handle_cursor_over_xy (EvView *view, gint x, gint y)
1505 {
1506         EvLink      *link;
1507         EvFormField *field;
1508
1509         if (view->cursor == EV_VIEW_CURSOR_HIDDEN)
1510                 return;
1511
1512         if (view->drag_info.in_drag) {
1513                 if (view->cursor != EV_VIEW_CURSOR_DRAG)
1514                         ev_view_set_cursor (view, EV_VIEW_CURSOR_DRAG);
1515                 return;
1516         }
1517
1518         if (view->scroll_info.autoscrolling) {
1519                 if (view->cursor != EV_VIEW_CURSOR_AUTOSCROLL)
1520                         ev_view_set_cursor (view, EV_VIEW_CURSOR_AUTOSCROLL);
1521                 return;
1522         }
1523
1524         link = ev_view_get_link_at_location (view, x, y);
1525         if (link) {
1526                 g_object_set (view, "has-tooltip", TRUE, NULL);
1527                 ev_view_set_cursor (view, EV_VIEW_CURSOR_LINK);
1528         } else if ((field = ev_view_get_form_field_at_location (view, x, y))) {
1529                 if (field->is_read_only) {
1530                         if (view->cursor == EV_VIEW_CURSOR_LINK ||
1531                             view->cursor == EV_VIEW_CURSOR_IBEAM ||
1532                             view->cursor == EV_VIEW_CURSOR_DRAG)
1533                                 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
1534                 } else if (EV_IS_FORM_FIELD_TEXT (field)) {
1535                         ev_view_set_cursor (view, EV_VIEW_CURSOR_IBEAM);
1536                 } else {
1537                         ev_view_set_cursor (view, EV_VIEW_CURSOR_LINK);
1538                 }
1539         } else if (location_in_text (view, x + view->scroll_x, y + view->scroll_y)) {
1540                 ev_view_set_cursor (view, EV_VIEW_CURSOR_IBEAM);
1541         } else {
1542                 if (view->cursor == EV_VIEW_CURSOR_LINK ||
1543                     view->cursor == EV_VIEW_CURSOR_IBEAM ||
1544                     view->cursor == EV_VIEW_CURSOR_DRAG ||
1545                     view->cursor == EV_VIEW_CURSOR_AUTOSCROLL)
1546                         ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
1547         }
1548 }
1549
1550 /*** Images ***/
1551 static EvImage *
1552 ev_view_get_image_at_location (EvView  *view,
1553                                gdouble  x,
1554                                gdouble  y)
1555 {
1556         gint page = -1;
1557         gint x_offset = 0, y_offset = 0;
1558         gint x_new = 0, y_new = 0;
1559         GList *image_mapping;
1560
1561         if (!EV_IS_DOCUMENT_IMAGES (view->document))
1562                 return NULL;
1563
1564         x += view->scroll_x;
1565         y += view->scroll_y;
1566
1567         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1568
1569         if (page == -1)
1570                 return NULL;
1571
1572         if (get_doc_point_from_offset (view, page, x_offset,
1573                                        y_offset, &x_new, &y_new) == FALSE)
1574                 return NULL;
1575
1576         image_mapping = ev_pixbuf_cache_get_image_mapping (view->pixbuf_cache, page);
1577
1578         if (image_mapping)
1579                 return ev_image_mapping_find (image_mapping, x_new, y_new);
1580         else
1581                 return NULL;
1582 }
1583
1584 /*** Forms ***/
1585 static EvFormField *
1586 ev_view_get_form_field_at_location (EvView  *view,
1587                                     gdouble  x,
1588                                     gdouble  y)
1589 {
1590         gint page = -1;
1591         gint x_offset = 0, y_offset = 0;
1592         gint x_new = 0, y_new = 0;
1593         GList *forms_mapping;
1594
1595         if (!EV_IS_DOCUMENT_FORMS (view->document))
1596                 return NULL;
1597
1598         x += view->scroll_x;
1599         y += view->scroll_y;
1600
1601         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1602
1603         if (page == -1)
1604                 return NULL;
1605
1606         if (get_doc_point_from_offset (view, page, x_offset,
1607                                        y_offset, &x_new, &y_new) == FALSE)
1608                 return NULL;
1609
1610         forms_mapping = ev_pixbuf_cache_get_form_field_mapping (view->pixbuf_cache, page);
1611
1612         if (forms_mapping)
1613                 return ev_form_field_mapping_find (forms_mapping, x_new, y_new);
1614         else
1615                 return NULL;
1616 }
1617
1618 static GdkRegion *
1619 ev_view_form_field_get_region (EvView      *view,
1620                                EvFormField *field)
1621 {
1622         EvRectangle  field_area;
1623         GdkRectangle view_area;
1624         GList       *forms_mapping;
1625
1626         forms_mapping = ev_pixbuf_cache_get_form_field_mapping (view->pixbuf_cache,
1627                                                                 field->page->index);
1628         ev_form_field_mapping_get_area (forms_mapping, field, &field_area);
1629         doc_rect_to_view_rect (view, field->page->index, &field_area, &view_area);
1630         view_area.x -= view->scroll_x;
1631         view_area.y -= view->scroll_y;
1632
1633         return gdk_region_rectangle (&view_area);
1634 }
1635
1636 static gboolean
1637 ev_view_forms_remove_widgets (EvView *view)
1638 {
1639         ev_view_remove_all (view);
1640
1641         return FALSE;
1642 }
1643
1644 static void
1645 ev_view_form_field_destroy (GtkWidget *widget,
1646                             EvView    *view)
1647 {
1648         g_idle_add ((GSourceFunc)ev_view_forms_remove_widgets, view);
1649 }
1650
1651 static GtkWidget *
1652 ev_view_form_field_button_create_widget (EvView      *view,
1653                                          EvFormField *field)
1654 {
1655         EvFormFieldButton *field_button = EV_FORM_FIELD_BUTTON (field);
1656         GdkRegion         *field_region = NULL;
1657
1658         switch (field_button->type) {
1659                 case EV_FORM_FIELD_BUTTON_PUSH:
1660                         return NULL;
1661                 case EV_FORM_FIELD_BUTTON_CHECK:
1662                 case EV_FORM_FIELD_BUTTON_RADIO: {
1663                         gboolean  state;
1664                         GList    *forms_mapping, *l;
1665
1666                         state = ev_document_forms_form_field_button_get_state (EV_DOCUMENT_FORMS (view->document),
1667                                                                                field);
1668
1669                         /* FIXME: it actually depends on NoToggleToOff flags */
1670                         if (field_button->type == EV_FORM_FIELD_BUTTON_RADIO &&
1671                             state && field_button->state)
1672                                 return NULL;
1673
1674                         field_region = ev_view_form_field_get_region (view, field);
1675
1676                         /* For radio buttons and checkbox buttons that are in a set
1677                          * we need to update also the region for the current selected item
1678                          */
1679                         forms_mapping = ev_pixbuf_cache_get_form_field_mapping (view->pixbuf_cache,
1680                                                                                 field->page->index);
1681                         for (l = forms_mapping; l; l = g_list_next (l)) {
1682                                 EvFormField *button = ((EvFormFieldMapping *)(l->data))->field;
1683                                 GdkRegion   *button_region;
1684
1685                                 if (button->id == field->id)
1686                                         continue;
1687
1688                                 /* FIXME: only buttons in the same group should be updated */
1689                                 if (!EV_IS_FORM_FIELD_BUTTON (button) ||
1690                                     EV_FORM_FIELD_BUTTON (button)->type != field_button->type ||
1691                                     EV_FORM_FIELD_BUTTON (button)->state != TRUE)
1692                                         continue;
1693
1694                                 button_region = ev_view_form_field_get_region (view, button);
1695                                 gdk_region_union (field_region, button_region);
1696                                 gdk_region_destroy (button_region);
1697                         }
1698
1699                         ev_document_forms_form_field_button_set_state (EV_DOCUMENT_FORMS (view->document),
1700                                                                        field, !state);
1701                         field_button->state = !state;
1702                 }
1703                         break;
1704         }
1705
1706         ev_pixbuf_cache_reload_page (view->pixbuf_cache,
1707                                      field_region,
1708                                      field->page->index,
1709                                      view->rotation,
1710                                      view->scale);
1711         gdk_region_destroy (field_region);
1712
1713         return NULL;
1714 }
1715
1716 static void
1717 ev_view_form_field_text_save (EvView    *view,
1718                               GtkWidget *widget)
1719 {
1720         EvFormField *field;
1721
1722         if (!view->document)
1723                 return;
1724
1725         field = g_object_get_data (G_OBJECT (widget), "form-field");
1726
1727         if (field->changed) {
1728                 EvFormFieldText *field_text = EV_FORM_FIELD_TEXT (field);
1729                 GdkRegion       *field_region;
1730
1731                 field_region = ev_view_form_field_get_region (view, field);
1732
1733                 ev_document_forms_form_field_text_set_text (EV_DOCUMENT_FORMS (view->document),
1734                                                             field, field_text->text);
1735                 field->changed = FALSE;
1736                 ev_pixbuf_cache_reload_page (view->pixbuf_cache,
1737                                              field_region,
1738                                              field->page->index,
1739                                              view->rotation,
1740                                              view->scale);
1741                 gdk_region_destroy (field_region);
1742         }
1743 }
1744
1745 static void
1746 ev_view_form_field_text_changed (GtkWidget   *widget,
1747                                  EvFormField *field)
1748 {
1749         EvFormFieldText *field_text = EV_FORM_FIELD_TEXT (field);
1750         gchar           *text = NULL;
1751
1752         if (GTK_IS_ENTRY (widget)) {
1753                 text = g_strdup (gtk_entry_get_text (GTK_ENTRY (widget)));
1754         } else if (GTK_IS_TEXT_BUFFER (widget)) {
1755                 GtkTextIter start, end;
1756
1757                 gtk_text_buffer_get_bounds (GTK_TEXT_BUFFER (widget), &start, &end);
1758                 text = gtk_text_buffer_get_text (GTK_TEXT_BUFFER (widget),
1759                                                  &start, &end, FALSE);
1760         }
1761
1762         if (!field_text->text ||
1763             (field_text->text && g_ascii_strcasecmp (field_text->text, text) != 0)) {
1764                 g_free (field_text->text);
1765                 field_text->text = text;
1766                 field->changed = TRUE;
1767         }
1768 }
1769
1770 static GtkWidget *
1771 ev_view_form_field_text_create_widget (EvView      *view,
1772                                        EvFormField *field)
1773 {
1774         EvFormFieldText *field_text = EV_FORM_FIELD_TEXT (field);
1775         GtkWidget       *text = NULL;
1776         gchar           *txt;
1777
1778         txt = ev_document_forms_form_field_text_get_text (EV_DOCUMENT_FORMS (view->document),
1779                                                           field);
1780
1781         switch (field_text->type) {
1782                 case EV_FORM_FIELD_TEXT_FILE_SELECT:
1783                         /* TODO */
1784                 case EV_FORM_FIELD_TEXT_NORMAL:
1785                         text = gtk_entry_new ();
1786                         gtk_entry_set_has_frame (GTK_ENTRY (text), FALSE);
1787                         gtk_entry_set_max_length (GTK_ENTRY (text), field_text->max_len);
1788                         gtk_entry_set_visibility (GTK_ENTRY (text), !field_text->is_password);
1789
1790                         if (txt) {
1791                                 gtk_entry_set_text (GTK_ENTRY (text), txt);
1792                                 g_free (txt);
1793                         }
1794
1795                         g_signal_connect (G_OBJECT (text), "changed",
1796                                           G_CALLBACK (ev_view_form_field_text_changed),
1797                                           field);
1798                         g_signal_connect_after (G_OBJECT (text), "activate",
1799                                                 G_CALLBACK (ev_view_form_field_destroy),
1800                                                 view);
1801                         break;
1802                 case EV_FORM_FIELD_TEXT_MULTILINE: {
1803                         GtkTextBuffer *buffer;
1804
1805                         text = gtk_text_view_new ();
1806                         buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (text));
1807
1808                         if (txt) {
1809                                 gtk_text_buffer_set_text (buffer, txt, -1);
1810                                 g_free (txt);
1811                         }
1812
1813                         g_signal_connect (G_OBJECT (buffer), "changed",
1814                                           G_CALLBACK (ev_view_form_field_text_changed),
1815                                           field);
1816                 }
1817                         break;
1818         }
1819
1820         g_object_weak_ref (G_OBJECT (text),
1821                            (GWeakNotify)ev_view_form_field_text_save,
1822                            view);
1823
1824         return text;
1825 }
1826
1827 static void
1828 ev_view_form_field_choice_save (EvView    *view,
1829                                 GtkWidget *widget)
1830 {
1831         EvFormField *field;
1832
1833         if (!view->document)
1834                 return;
1835
1836         field = g_object_get_data (G_OBJECT (widget), "form-field");
1837
1838         if (field->changed) {
1839                 GList             *l;
1840                 EvFormFieldChoice *field_choice = EV_FORM_FIELD_CHOICE (field);
1841                 GdkRegion         *field_region;
1842
1843                 field_region = ev_view_form_field_get_region (view, field);
1844
1845                 if (field_choice->is_editable) {
1846                         ev_document_forms_form_field_choice_set_text (EV_DOCUMENT_FORMS (view->document),
1847                                                                       field, field_choice->text);
1848                 } else {
1849                         ev_document_forms_form_field_choice_unselect_all (EV_DOCUMENT_FORMS (view->document), field);
1850                         for (l = field_choice->selected_items; l; l = g_list_next (l)) {
1851                                 ev_document_forms_form_field_choice_select_item (EV_DOCUMENT_FORMS (view->document),
1852                                                                                  field,
1853                                                                                  GPOINTER_TO_INT (l->data));
1854                         }
1855                 }
1856                 field->changed = FALSE;
1857                 ev_pixbuf_cache_reload_page (view->pixbuf_cache,
1858                                              field_region,
1859                                              field->page->index,
1860                                              view->rotation,
1861                                              view->scale);
1862                 gdk_region_destroy (field_region);
1863         }
1864 }
1865
1866 static void
1867 ev_view_form_field_choice_changed (GtkWidget   *widget,
1868                                    EvFormField *field)
1869 {
1870         EvFormFieldChoice *field_choice = EV_FORM_FIELD_CHOICE (field);
1871
1872         if (GTK_IS_COMBO_BOX (widget)) {
1873                 gint item;
1874
1875                 item = gtk_combo_box_get_active (GTK_COMBO_BOX (widget));
1876                 if (!field_choice->selected_items ||
1877                     GPOINTER_TO_INT (field_choice->selected_items->data) != item) {
1878                         g_list_free (field_choice->selected_items);
1879                         field_choice->selected_items = NULL;
1880                         field_choice->selected_items = g_list_prepend (field_choice->selected_items,
1881                                                                        GINT_TO_POINTER (item));
1882                         field->changed = TRUE;
1883                 }
1884
1885                 if (GTK_IS_COMBO_BOX_ENTRY (widget)) {
1886                         gchar *text;
1887
1888                         text = gtk_combo_box_get_active_text (GTK_COMBO_BOX (widget));
1889                         if (!field_choice->text ||
1890                             (field_choice->text && g_ascii_strcasecmp (field_choice->text, text) != 0)) {
1891                                 g_free (field_choice->text);
1892                                 field_choice->text = text;
1893                                 field->changed = TRUE;
1894                         }
1895                 }
1896         } else if (GTK_IS_TREE_SELECTION (widget)) {
1897                 GtkTreeSelection *selection = GTK_TREE_SELECTION (widget);
1898                 GtkTreeModel     *model;
1899                 GList            *items, *l;
1900
1901                 items = gtk_tree_selection_get_selected_rows (selection, &model);
1902                 g_list_free (field_choice->selected_items);
1903                 field_choice->selected_items = NULL;
1904
1905                 for (l = items; l && l->data; l = g_list_next (l)) {
1906                         GtkTreeIter  iter;
1907                         GtkTreePath *path = (GtkTreePath *)l->data;
1908                         gint         item;
1909
1910                         gtk_tree_model_get_iter (model, &iter, path);
1911                         gtk_tree_model_get (model, &iter, 1, &item, -1);
1912
1913                         field_choice->selected_items = g_list_prepend (field_choice->selected_items,
1914                                                                        GINT_TO_POINTER (item));
1915
1916                         gtk_tree_path_free (path);
1917                 }
1918
1919                 g_list_free (items);
1920
1921                 field->changed = TRUE;
1922         }
1923 }
1924
1925 static GtkWidget *
1926 ev_view_form_field_choice_create_widget (EvView      *view,
1927                                          EvFormField *field)
1928 {
1929         EvFormFieldChoice *field_choice = EV_FORM_FIELD_CHOICE (field);
1930         GtkWidget         *choice;
1931         GtkTreeModel      *model;
1932         gint               n_items, i;
1933         gint               selected_item = 0;
1934
1935         n_items = ev_document_forms_form_field_choice_get_n_items (EV_DOCUMENT_FORMS (view->document),
1936                                                                    field);
1937         model = GTK_TREE_MODEL (gtk_list_store_new (2, G_TYPE_STRING, G_TYPE_INT));
1938         for (i = 0; i < n_items; i++) {
1939                 GtkTreeIter iter;
1940                 gchar      *item;
1941
1942                 item = ev_document_forms_form_field_choice_get_item (EV_DOCUMENT_FORMS (view->document),
1943                                                                      field, i);
1944                 if (ev_document_forms_form_field_choice_is_item_selected (
1945                             EV_DOCUMENT_FORMS (view->document), field, i)) {
1946                         selected_item = i;
1947                         /* FIXME: we need a get_selected_items function in poppler */
1948                         field_choice->selected_items = g_list_prepend (field_choice->selected_items,
1949                                                                        GINT_TO_POINTER (i));
1950                 }
1951
1952                 if (item) {
1953                         gtk_list_store_append (GTK_LIST_STORE (model), &iter);
1954                         gtk_list_store_set (GTK_LIST_STORE (model), &iter,
1955                                             0, item,
1956                                             1, i,
1957                                             -1);
1958                         g_free (item);
1959                 }
1960         }
1961
1962         if (field_choice->type == EV_FORM_FIELD_CHOICE_LIST) {
1963                 GtkCellRenderer  *renderer;
1964                 GtkWidget        *tree_view;
1965                 GtkTreeSelection *selection;
1966
1967                 tree_view = gtk_tree_view_new_with_model (model);
1968                 gtk_tree_view_set_headers_visible (GTK_TREE_VIEW (tree_view), FALSE);
1969
1970                 selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (tree_view));
1971                 if (field_choice->multi_select) {
1972                         gtk_tree_selection_set_mode (selection, GTK_SELECTION_MULTIPLE);
1973                 }
1974
1975                 /* TODO: set selected items */
1976
1977                 renderer = gtk_cell_renderer_text_new ();
1978                 gtk_tree_view_insert_column_with_attributes (GTK_TREE_VIEW (tree_view),
1979                                                              0,
1980                                                              "choix", renderer,
1981                                                              "text", 0,
1982                                                              NULL);
1983
1984                 choice = gtk_scrolled_window_new (NULL, NULL);
1985                 gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (choice),
1986                                                 GTK_POLICY_AUTOMATIC,
1987                                                 GTK_POLICY_AUTOMATIC);
1988                 gtk_container_add (GTK_CONTAINER (choice), tree_view);
1989                 gtk_widget_show (tree_view);
1990
1991                 g_signal_connect (G_OBJECT (selection), "changed",
1992                                   G_CALLBACK (ev_view_form_field_choice_changed),
1993                                   field);
1994                 g_signal_connect_after (G_OBJECT (selection), "changed",
1995                                         G_CALLBACK (ev_view_form_field_destroy),
1996                                         view);
1997         } else if (field_choice->is_editable) { /* ComboBoxEntry */
1998                 gchar *text;
1999
2000                 choice = gtk_combo_box_entry_new_with_model (model, 0);
2001                 text = ev_document_forms_form_field_choice_get_text (EV_DOCUMENT_FORMS (view->document), field);
2002                 if (text) {
2003                         gtk_entry_set_text (GTK_ENTRY (gtk_bin_get_child (GTK_BIN (choice))), text);
2004                         g_free (text);
2005                 }
2006
2007                 g_signal_connect (G_OBJECT (choice), "changed",
2008                                   G_CALLBACK (ev_view_form_field_choice_changed),
2009                                   field);
2010                 g_signal_connect_after (G_OBJECT (GTK_BIN (choice)->child), "activate",
2011                                         G_CALLBACK (ev_view_form_field_destroy),
2012                                         view);
2013         } else { /* ComboBoxText */
2014                 GtkCellRenderer *renderer;
2015
2016                 choice = gtk_combo_box_new_with_model (model);
2017                 renderer = gtk_cell_renderer_text_new ();
2018                 gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (choice),
2019                                             renderer, TRUE);
2020                 gtk_cell_layout_set_attributes (GTK_CELL_LAYOUT (choice),
2021                                                 renderer,
2022                                                 "text", 0,
2023                                                 NULL);
2024                 gtk_combo_box_set_active (GTK_COMBO_BOX (choice), selected_item);
2025                 gtk_combo_box_popup (GTK_COMBO_BOX (choice));
2026
2027                 g_signal_connect (G_OBJECT (choice), "changed",
2028                                   G_CALLBACK (ev_view_form_field_choice_changed),
2029                                   field);
2030                 g_signal_connect_after (G_OBJECT (choice), "changed",
2031                                         G_CALLBACK (ev_view_form_field_destroy),
2032                                         view);
2033         }
2034
2035         g_object_unref (model);
2036
2037         g_object_weak_ref (G_OBJECT (choice),
2038                            (GWeakNotify)ev_view_form_field_choice_save,
2039                            view);
2040
2041         return choice;
2042 }
2043
2044 static void
2045 ev_view_handle_form_field (EvView      *view,
2046                            EvFormField *field,
2047                            gdouble      x,
2048                            gdouble      y)
2049 {
2050         GtkWidget   *field_widget = NULL;
2051         GList       *form_field_mapping;
2052         EvRectangle  field_area;
2053         GdkRectangle view_area;
2054
2055         if (field->is_read_only)
2056                 return;
2057
2058         if (EV_IS_FORM_FIELD_BUTTON (field)) {
2059                 field_widget = ev_view_form_field_button_create_widget (view, field);
2060         } else if (EV_IS_FORM_FIELD_TEXT (field)) {
2061                 field_widget = ev_view_form_field_text_create_widget (view, field);
2062         } else if (EV_IS_FORM_FIELD_CHOICE (field)) {
2063                 field_widget = ev_view_form_field_choice_create_widget (view, field);
2064         } else if (EV_IS_FORM_FIELD_SIGNATURE (field)) {
2065                 /* TODO */
2066         }
2067
2068         /* Form field doesn't require a widget */
2069         if (!field_widget)
2070                 return;
2071
2072         g_object_set_data_full (G_OBJECT (field_widget), "form-field",
2073                                 g_object_ref (field),
2074                                 (GDestroyNotify)g_object_unref);
2075
2076         form_field_mapping = ev_pixbuf_cache_get_form_field_mapping (view->pixbuf_cache, field->page->index);
2077         ev_form_field_mapping_get_area (form_field_mapping, field, &field_area);
2078
2079         doc_rect_to_view_rect (view, field->page->index, &field_area, &view_area);
2080         view_area.x -= view->scroll_x;
2081         view_area.y -= view->scroll_y;
2082
2083         gtk_layout_put (GTK_LAYOUT (view), field_widget, view_area.x, view_area.y);
2084         gtk_widget_show (field_widget);
2085         gtk_widget_grab_focus (field_widget);
2086 }
2087
2088 /*** GtkWidget implementation ***/
2089
2090 static void
2091 ev_view_size_request_continuous_dual_page (EvView         *view,
2092                                            GtkRequisition *requisition)
2093 {
2094         int max_width;
2095         gint n_pages;
2096         GtkBorder border;
2097
2098         ev_page_cache_get_max_width (view->page_cache, view->rotation,
2099                                      view->scale, &max_width);
2100         compute_border (view, max_width, max_width, &border);
2101
2102         n_pages = ev_page_cache_get_n_pages (view->page_cache) + 1;
2103
2104         requisition->width = (max_width + border.left + border.right) * 2 + (view->spacing * 3);
2105         get_page_y_offset (view, n_pages, view->scale, &requisition->height);
2106
2107         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
2108                 requisition->width = 1;
2109         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
2110                 requisition->width = 1;
2111                 /* FIXME: This could actually be set on one page docs or docs
2112                  * with a strange aspect ratio. */
2113                 /* requisition->height = 1;*/
2114         }
2115 }
2116
2117 static void
2118 ev_view_size_request_continuous (EvView         *view,
2119                                  GtkRequisition *requisition)
2120 {
2121         int max_width;
2122         int n_pages;
2123         GtkBorder border;
2124
2125
2126         ev_page_cache_get_max_width (view->page_cache, view->rotation,
2127                                      view->scale, &max_width);
2128         n_pages = ev_page_cache_get_n_pages (view->page_cache);
2129         compute_border (view, max_width, max_width, &border);
2130
2131         requisition->width = max_width + (view->spacing * 2) + border.left + border.right;
2132         get_page_y_offset (view, n_pages, view->scale, &requisition->height);
2133
2134         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
2135                 requisition->width = 1;
2136         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
2137                 requisition->width = 1;
2138                 /* FIXME: This could actually be set on one page docs or docs
2139                  * with a strange aspect ratio. */
2140                 /* requisition->height = 1;*/
2141         }
2142 }
2143
2144 static void
2145 ev_view_size_request_dual_page (EvView         *view,
2146                                 GtkRequisition *requisition)
2147 {
2148         GtkBorder border;
2149         gint width, height;
2150
2151         /* Find the largest of the two. */
2152         ev_page_cache_get_size (view->page_cache,
2153                                 view->current_page,
2154                                 view->rotation,
2155                                 view->scale,
2156                                 &width, &height);
2157         if (view->current_page + 1 < ev_page_cache_get_n_pages (view->page_cache)) {
2158                 gint width_2, height_2;
2159                 ev_page_cache_get_size (view->page_cache,
2160                                         view->current_page + 1,
2161                                         view->rotation,
2162                                         view->scale,
2163                                         &width_2, &height_2);
2164                 if (width_2 > width) {
2165                         width = width_2;
2166                         height = height_2;
2167                 }
2168         }
2169         compute_border (view, width, height, &border);
2170
2171         requisition->width = ((width + border.left + border.right) * 2) +
2172                 (view->spacing * 3);
2173         requisition->height = (height + border.top + border.bottom) +
2174                 (view->spacing * 2);
2175
2176         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
2177                 requisition->width = 1;
2178         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
2179                 requisition->width = 1;
2180                 requisition->height = 1;
2181         }
2182 }
2183
2184 static void
2185 ev_view_size_request_single_page (EvView         *view,
2186                                   GtkRequisition *requisition)
2187 {
2188         GtkBorder border;
2189         gint width, height;
2190
2191         ev_page_cache_get_size (view->page_cache,
2192                                 view->current_page,
2193                                 view->rotation,
2194                                 view->scale,
2195                                 &width, &height);
2196         compute_border (view, width, height, &border);
2197
2198         requisition->width = width + border.left + border.right + (2 * view->spacing);
2199         requisition->height = height + border.top + border.bottom + (2 * view->spacing);
2200
2201         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
2202                 requisition->width = 1;
2203                 requisition->height = height + border.top + border.bottom + (2 * view->spacing);
2204         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
2205                 requisition->width = 1;
2206                 requisition->height = 1;
2207         }
2208 }
2209
2210 static void
2211 ev_view_size_request (GtkWidget      *widget,
2212                       GtkRequisition *requisition)
2213 {
2214         EvView *view = EV_VIEW (widget);
2215
2216         if (view->document == NULL) {
2217                 requisition->width = 1;
2218                 requisition->height = 1;
2219                 return;
2220         }
2221
2222         if (view->presentation) {
2223                 requisition->width = 1;
2224                 requisition->height = 1;
2225                 return;
2226         }
2227
2228         if (view->continuous && view->dual_page)
2229                 ev_view_size_request_continuous_dual_page (view, requisition);
2230         else if (view->continuous)
2231                 ev_view_size_request_continuous (view, requisition);
2232         else if (view->dual_page)
2233                 ev_view_size_request_dual_page (view, requisition);
2234         else
2235                 ev_view_size_request_single_page (view, requisition);
2236 }
2237
2238 static void
2239 ev_view_size_allocate (GtkWidget      *widget,
2240                        GtkAllocation  *allocation)
2241 {
2242         EvView *view = EV_VIEW (widget);
2243         GList  *children, *l;
2244
2245         GTK_WIDGET_CLASS (ev_view_parent_class)->size_allocate (widget, allocation);
2246
2247         if (view->sizing_mode == EV_SIZING_FIT_WIDTH ||
2248             view->sizing_mode == EV_SIZING_BEST_FIT) {
2249
2250                 g_signal_emit (view, signals[SIGNAL_ZOOM_INVALID], 0);
2251
2252                 ev_view_size_request (widget, &widget->requisition);
2253         }
2254
2255         view_set_adjustment_values (view, GTK_ORIENTATION_HORIZONTAL);
2256         view_set_adjustment_values (view, GTK_ORIENTATION_VERTICAL);
2257
2258         if (view->document)
2259                 view_update_range_and_current_page (view);
2260
2261         view->pending_scroll = SCROLL_TO_KEEP_POSITION;
2262         view->pending_resize = FALSE;
2263
2264         children = gtk_container_get_children (GTK_CONTAINER (widget));
2265         for (l = children; l && l->data; l = g_list_next (l)) {
2266                 EvFormField   *field;
2267                 EvRectangle    field_area;
2268                 GdkRectangle   view_area;
2269                 GList         *form_field_mapping;
2270                 GtkAllocation  child_allocation;
2271                 GtkRequisition child_requisition;
2272                 GtkWidget     *child = (GtkWidget *)l->data;
2273
2274                 field = g_object_get_data (G_OBJECT (child), "form-field");
2275                 if (!field)
2276                         continue;
2277
2278                 form_field_mapping = ev_pixbuf_cache_get_form_field_mapping (view->pixbuf_cache,
2279                                                                              field->page->index);
2280                 ev_form_field_mapping_get_area (form_field_mapping, field, &field_area);
2281
2282                 doc_rect_to_view_rect (view, field->page->index, &field_area, &view_area);
2283                 view_area.x -= view->scroll_x;
2284                 view_area.y -= view->scroll_y;
2285
2286                 gtk_widget_size_request (child, &child_requisition);
2287                 if (child_requisition.width != view_area.width ||
2288                     child_requisition.height != view_area.height)
2289                         gtk_widget_set_size_request (child, view_area.width, view_area.height);
2290
2291                 gtk_container_child_get (GTK_CONTAINER (widget),
2292                                          child,
2293                                          "x", &child_allocation.x,
2294                                          "y", &child_allocation.y,
2295                                          NULL);
2296                 if (child_allocation.x != view_area.x ||
2297                     child_allocation.y != view_area.y) {
2298                         gtk_layout_move (GTK_LAYOUT (widget), child, view_area.x, view_area.y);
2299                 }
2300         }
2301         g_list_free (children);
2302 }
2303
2304 static void
2305 ev_view_realize (GtkWidget *widget)
2306 {
2307         EvView *view = EV_VIEW (widget);
2308
2309         if (GTK_WIDGET_CLASS (ev_view_parent_class)->realize)
2310                 (* GTK_WIDGET_CLASS (ev_view_parent_class)->realize) (widget);
2311
2312         gdk_window_set_events (view->layout.bin_window,
2313                                (gdk_window_get_events (view->layout.bin_window) |
2314                                 GDK_EXPOSURE_MASK |
2315                                 GDK_BUTTON_PRESS_MASK |
2316                                 GDK_BUTTON_RELEASE_MASK |
2317                                 GDK_SCROLL_MASK |
2318                                 GDK_KEY_PRESS_MASK |
2319                                 GDK_POINTER_MOTION_MASK |
2320                                 GDK_POINTER_MOTION_HINT_MASK |
2321                                 GDK_ENTER_NOTIFY_MASK |
2322                                 GDK_LEAVE_NOTIFY_MASK));
2323
2324         if (view->presentation)
2325                 gdk_window_set_background (view->layout.bin_window, &widget->style->black);
2326         else
2327                 gdk_window_set_background (view->layout.bin_window, &widget->style->mid [GTK_STATE_NORMAL]);
2328 }
2329
2330 static gboolean
2331 ev_view_scroll_event (GtkWidget *widget, GdkEventScroll *event)
2332 {
2333         EvView *view = EV_VIEW (widget);
2334         guint state;
2335
2336         state = event->state & gtk_accelerator_get_default_mod_mask ();
2337
2338         if (state == GDK_CONTROL_MASK && view->presentation == FALSE) {
2339                 ev_view_set_sizing_mode (view, EV_SIZING_FREE);
2340
2341                 if (event->direction == GDK_SCROLL_UP ||
2342                     event->direction == GDK_SCROLL_LEFT) {
2343                         if (ev_view_can_zoom_in (view)) {
2344                                 ev_view_zoom_in (view);
2345                         }
2346                 } else {
2347                         if (ev_view_can_zoom_out (view)) {
2348                                 ev_view_zoom_out (view);
2349                         }
2350                 }
2351
2352                 return TRUE;
2353         }
2354
2355         view->jump_to_find_result = FALSE;
2356
2357         /* Shift+Wheel scrolls the in the perpendicular direction */
2358         if (state & GDK_SHIFT_MASK) {
2359                 if (event->direction == GDK_SCROLL_UP)
2360                         event->direction = GDK_SCROLL_LEFT;
2361                 else if (event->direction == GDK_SCROLL_LEFT)
2362                         event->direction = GDK_SCROLL_UP;
2363                 else if (event->direction == GDK_SCROLL_DOWN)
2364                         event->direction = GDK_SCROLL_RIGHT;
2365                 else if (event->direction == GDK_SCROLL_RIGHT)
2366                         event->direction = GDK_SCROLL_DOWN;
2367
2368                 event->state &= ~GDK_SHIFT_MASK;
2369                 state &= ~GDK_SHIFT_MASK;
2370         }
2371
2372         if (state == 0 && view->presentation) {
2373                 switch (event->direction) {
2374                         case GDK_SCROLL_DOWN:
2375                         case GDK_SCROLL_RIGHT:
2376                                 ev_view_next_page (view);
2377                                 break;
2378                         case GDK_SCROLL_UP:
2379                         case GDK_SCROLL_LEFT:
2380                                 ev_view_previous_page (view);
2381                                 break;
2382                 }
2383
2384                 return TRUE;
2385         }
2386
2387         return FALSE;
2388 }
2389
2390 static EvViewSelection *
2391 find_selection_for_page (EvView *view,
2392                          gint    page)
2393 {
2394         GList *list;
2395
2396         for (list = view->selection_info.selections; list != NULL; list = list->next) {
2397                 EvViewSelection *selection;
2398
2399                 selection = (EvViewSelection *) list->data;
2400
2401                 if (selection->page == page)
2402                         return selection;
2403         }
2404
2405         return NULL;
2406 }
2407
2408 static void
2409 draw_end_presentation_page (EvView       *view,
2410                             GdkRectangle *page_area)
2411 {
2412         PangoLayout *layout;
2413         PangoFontDescription *font_desc;
2414         gchar *markup;
2415         const gchar *text = _("End of presentation. Press Escape to exit.");
2416
2417         if (view->presentation_state != EV_PRESENTATION_END)
2418                 return;
2419
2420         layout = gtk_widget_create_pango_layout (GTK_WIDGET (view), NULL);
2421         markup = g_strdup_printf ("<span foreground=\"white\">%s</span>", text);
2422         pango_layout_set_markup (layout, markup, -1);
2423         g_free (markup);
2424
2425         font_desc = pango_font_description_new ();
2426         pango_font_description_set_size (font_desc, 16 * PANGO_SCALE);
2427         pango_layout_set_font_description (layout, font_desc);
2428
2429         gtk_paint_layout (GTK_WIDGET (view)->style,
2430                           view->layout.bin_window,
2431                           GTK_WIDGET_STATE (view),
2432                           FALSE,
2433                           page_area,
2434                           GTK_WIDGET (view),
2435                           NULL,
2436                           page_area->x + 15,
2437                           page_area->y + 15,
2438                           layout);
2439
2440         pango_font_description_free (font_desc);
2441         g_object_unref (layout);
2442 }
2443
2444 static gboolean
2445 ev_view_expose_event (GtkWidget      *widget,
2446                       GdkEventExpose *event)
2447 {
2448         EvView  *view = EV_VIEW (widget);
2449         cairo_t *cr;
2450         gint     i;
2451
2452         if (view->animation && ev_transition_animation_ready (view->animation)) {
2453                 GdkRectangle page_area;
2454                 GtkBorder    border;
2455
2456                 if (get_page_extents (view, view->current_page, &page_area, &border)) {
2457                         cr = gdk_cairo_create (view->layout.bin_window);
2458
2459                         /* normalize to x=0, y=0 */
2460                         cairo_translate (cr, page_area.x, page_area.y);
2461                         page_area.x = page_area.y = 0;
2462
2463                         ev_transition_animation_paint (view->animation, cr, page_area);
2464                         cairo_destroy (cr);
2465                 }
2466
2467                 return TRUE;
2468         }
2469
2470         if (view->presentation) {
2471                 switch (view->presentation_state) {
2472                         case EV_PRESENTATION_END: {
2473                                 GdkRectangle area = {0};
2474
2475                                 area.width = widget->allocation.width;
2476                                 area.height = widget->allocation.height;
2477
2478                                 draw_end_presentation_page (view, &area);
2479                         }
2480                                 return FALSE;
2481                         case EV_PRESENTATION_BLACK:
2482                         case EV_PRESENTATION_WHITE:
2483                                 return FALSE;
2484                         case EV_PRESENTATION_NORMAL:
2485                         default:
2486                                 break;
2487                 }
2488         } else if (view->loading) {
2489                 GdkRectangle area = {0};
2490
2491                 area.width = widget->allocation.width;
2492                 area.height = widget->allocation.height;
2493
2494                 draw_loading_text (view,
2495                                    &area,
2496                                    &(event->area));
2497         }
2498
2499         if (view->document == NULL)
2500                 return FALSE;
2501
2502         cr = gdk_cairo_create (view->layout.bin_window);
2503
2504         for (i = view->start_page; i <= view->end_page; i++) {
2505                 GdkRectangle page_area;
2506                 GtkBorder border;
2507                 gboolean page_ready = TRUE;
2508
2509                 if (!get_page_extents (view, i, &page_area, &border))
2510                         continue;
2511
2512                 page_area.x -= view->scroll_x;
2513                 page_area.y -= view->scroll_y;
2514
2515                 draw_one_page (view, i, cr, &page_area, &border, &(event->area), &page_ready);
2516
2517                 if (page_ready && view->find_pages && view->highlight_find_results)
2518                         highlight_find_results (view, i);
2519         }
2520
2521         cairo_destroy (cr);
2522
2523         if (GTK_WIDGET_CLASS (ev_view_parent_class)->expose_event)
2524                 (* GTK_WIDGET_CLASS (ev_view_parent_class)->expose_event) (widget, event);
2525
2526         return FALSE;
2527 }
2528
2529 static gboolean
2530 ev_view_do_popup_menu (EvView *view,
2531                        gdouble x,
2532                        gdouble y)
2533 {
2534         EvLink  *link;
2535         EvImage *image;
2536
2537         image = ev_view_get_image_at_location (view, x, y);
2538         if (image) {
2539                 g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, image);
2540                 return TRUE;
2541         }
2542
2543         link = ev_view_get_link_at_location (view, x, y);
2544         if (link) {
2545                 g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, link);
2546                 return TRUE;
2547         }
2548
2549         g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, NULL);
2550
2551         return TRUE;
2552 }
2553
2554 static gboolean
2555 ev_view_popup_menu (GtkWidget *widget)
2556 {
2557         gint x, y;
2558
2559         gtk_widget_get_pointer (widget, &x, &y);
2560         return ev_view_do_popup_menu (EV_VIEW (widget), x, y);
2561 }
2562
2563 static void
2564 get_link_area (EvView       *view,
2565                gint          x,
2566                gint          y,
2567                EvLink       *link,
2568                GdkRectangle *area)
2569 {
2570         EvRectangle  ev_rect;
2571         GList       *link_mapping;
2572         gint         page;
2573         gint         x_offset = 0, y_offset = 0;
2574
2575         x += view->scroll_x;
2576         y += view->scroll_y;
2577
2578         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
2579
2580         link_mapping = ev_pixbuf_cache_get_link_mapping (view->pixbuf_cache, page);
2581         ev_link_mapping_get_area (link_mapping, link, &ev_rect);
2582
2583         doc_rect_to_view_rect (view, page, &ev_rect, area);
2584         area->y -= view->scroll_y ;
2585 }
2586
2587 static gboolean
2588 ev_view_query_tooltip (GtkWidget         *widget,
2589                        gint               x,
2590                        gint               y,
2591                        gboolean           keyboard_tip,
2592                        GtkTooltip        *tooltip)
2593 {
2594         EvView *view = EV_VIEW (widget);
2595         EvLink *link;
2596         gchar  *text;
2597
2598         link = ev_view_get_link_at_location (view, x, y);
2599         if (!link)
2600                 return FALSE;
2601
2602         text = tip_from_link (view, link);
2603         if (text && g_utf8_validate (text, -1, NULL)) {
2604                 GdkRectangle link_area;
2605
2606                 get_link_area (view, x, y, link, &link_area);
2607                 gtk_tooltip_set_text (tooltip, text);
2608                 gtk_tooltip_set_tip_area (tooltip, &link_area);
2609         }
2610         g_free (text);
2611
2612         return TRUE;
2613 }
2614
2615 static void
2616 start_selection_for_event (EvView         *view,
2617                            GdkEventButton *event)
2618 {
2619         EvSelectionStyle style;
2620
2621         clear_selection (view);
2622
2623         view->selection_info.start.x = event->x + view->scroll_x;
2624         view->selection_info.start.y = event->y + view->scroll_y;
2625
2626         switch (event->type) {
2627                 case GDK_2BUTTON_PRESS:
2628                         style = EV_SELECTION_STYLE_WORD;
2629                         break;
2630                 case GDK_3BUTTON_PRESS:
2631                         style = EV_SELECTION_STYLE_LINE;
2632                         break;
2633                 default:
2634                         style = EV_SELECTION_STYLE_GLYPH;
2635                         break;
2636         }
2637
2638         view->selection_info.style = style;
2639 }
2640
2641 static gboolean
2642 ev_view_button_press_event (GtkWidget      *widget,
2643                             GdkEventButton *event)
2644 {
2645         EvView *view = EV_VIEW (widget);
2646
2647         if (!view->document)
2648                 return FALSE;
2649
2650         if (!GTK_WIDGET_HAS_FOCUS (widget)) {
2651                 gtk_widget_grab_focus (widget);
2652         }
2653
2654         view->pressed_button = event->button;
2655         view->selection_info.in_drag = FALSE;
2656
2657         if (view->scroll_info.autoscrolling)
2658                 return TRUE;
2659
2660         switch (event->button) {
2661                 case 1: {
2662                         EvImage *image;
2663                         EvFormField *field;
2664
2665                         if (EV_IS_SELECTION (view->document) && view->selection_info.selections) {
2666                                 if (event->type == GDK_3BUTTON_PRESS) {
2667                                         start_selection_for_event (view, event);
2668                                 } else if (location_in_selected_text (view,
2669                                                                event->x + view->scroll_x,
2670                                                                event->y + view->scroll_y)) {
2671                                         view->selection_info.in_drag = TRUE;
2672                                 } else {
2673                                         start_selection_for_event (view, event);
2674                                 }
2675
2676                                 gtk_widget_queue_draw (widget);
2677                         } else if ((field = ev_view_get_form_field_at_location (view, event->x, event->y))) {
2678                                 ev_view_remove_all (view);
2679                                 ev_view_handle_form_field (view, field, event->x, event->y);
2680                         } else if (!location_in_text (view, event->x + view->scroll_x, event->y + view->scroll_y) &&
2681                                    (image = ev_view_get_image_at_location (view, event->x, event->y))) {
2682                                 if (view->image_dnd_info.image)
2683                                         g_object_unref (view->image_dnd_info.image);
2684                                 view->image_dnd_info.image = g_object_ref (image);
2685                                 view->image_dnd_info.in_drag = TRUE;
2686
2687                                 view->image_dnd_info.start.x = event->x + view->scroll_x;
2688                                 view->image_dnd_info.start.y = event->y + view->scroll_y;
2689                         } else {
2690                                 ev_view_remove_all (view);
2691
2692                                 if (EV_IS_SELECTION (view->document))
2693                                         start_selection_for_event (view, event);
2694                         }
2695                 }
2696                         return TRUE;
2697                 case 2:
2698                         /* use root coordinates as reference point because
2699                          * scrolling changes window relative coordinates */
2700                         view->drag_info.start.x = event->x_root;
2701                         view->drag_info.start.y = event->y_root;
2702                         view->drag_info.hadj = gtk_adjustment_get_value (view->hadjustment);
2703                         view->drag_info.vadj = gtk_adjustment_get_value (view->vadjustment);
2704
2705                         ev_view_set_cursor (view, EV_VIEW_CURSOR_DRAG);
2706
2707                         return TRUE;
2708                 case 3:
2709                         view->scroll_info.start_y = event->y;
2710                         return ev_view_do_popup_menu (view, event->x, event->y);
2711         }
2712
2713         return FALSE;
2714 }
2715
2716 static void
2717 ev_view_remove_all (EvView *view)
2718 {
2719         GList *children, *child;
2720
2721         children = gtk_container_get_children (GTK_CONTAINER (view));
2722         for (child = children; child && child->data; child = g_list_next (child)) {
2723                 gtk_container_remove (GTK_CONTAINER (view),
2724                                       GTK_WIDGET (child->data));
2725         }
2726         g_list_free (children);
2727 }
2728
2729 /*** Drag and Drop ***/
2730 static void
2731 ev_view_drag_data_get (GtkWidget        *widget,
2732                        GdkDragContext   *context,
2733                        GtkSelectionData *selection_data,
2734                        guint             info,
2735                        guint             time)
2736 {
2737         EvView *view = EV_VIEW (widget);
2738
2739         switch (info) {
2740                 case TARGET_DND_TEXT:
2741                         if (EV_IS_SELECTION (view->document) &&
2742                             view->selection_info.selections) {
2743                                 gchar *text;
2744
2745                                 text = get_selected_text (view);
2746                                 gtk_selection_data_set_text (selection_data,
2747                                                              text,
2748                                                              strlen (text));
2749                                 g_free (text);
2750                         }
2751                         break;
2752                 case TARGET_DND_IMAGE:
2753                         if (view->image_dnd_info.image) {
2754                                 GdkPixbuf *pixbuf;
2755
2756                                 ev_document_doc_mutex_lock ();
2757                                 pixbuf = ev_document_images_get_image (EV_DOCUMENT_IMAGES (view->document),
2758                                                                        view->image_dnd_info.image);
2759                                 ev_document_doc_mutex_unlock ();
2760
2761                                 gtk_selection_data_set_pixbuf (selection_data, pixbuf);
2762                                 g_object_unref (pixbuf);
2763                         }
2764                         break;
2765                 case TARGET_DND_URI:
2766                         if (view->image_dnd_info.image) {
2767                                 GdkPixbuf   *pixbuf;
2768                                 const gchar *tmp_uri;
2769                                 gchar      **uris;
2770
2771                                 ev_document_doc_mutex_lock ();
2772                                 pixbuf = ev_document_images_get_image (EV_DOCUMENT_IMAGES (view->document),
2773                                                                        view->image_dnd_info.image);
2774                                 ev_document_doc_mutex_unlock ();
2775
2776                                 tmp_uri = ev_image_save_tmp (view->image_dnd_info.image, pixbuf);
2777                                 g_object_unref (pixbuf);
2778
2779                                 uris = g_new0 (gchar *, 2);
2780                                 uris[0] = (gchar *)tmp_uri;
2781
2782                                 gtk_selection_data_set_uris (selection_data, uris);
2783
2784                                 /* g_free instead of g_strfreev since tmp_uri is const */
2785                                 g_free (uris);
2786                         }
2787         }
2788 }
2789
2790 static gboolean
2791 ev_view_drag_motion (GtkWidget      *widget,
2792                      GdkDragContext *context,
2793                      gint            x,
2794                      gint            y,
2795                      guint           time)
2796 {
2797         if (gtk_drag_get_source_widget (context) == widget)
2798                 gdk_drag_status (context, 0, time);
2799         else
2800                 gdk_drag_status (context, context->suggested_action, time);
2801
2802         return TRUE;
2803 }
2804
2805 static void
2806 ev_view_drag_data_received (GtkWidget          *widget,
2807                             GdkDragContext     *context,
2808                             gint                x,
2809                             gint                y,
2810                             GtkSelectionData   *selection_data,
2811                             guint               info,
2812                             guint               time)
2813 {
2814         gchar  **uris;
2815         gint     i = 0;
2816         GSList  *uri_list = NULL;
2817
2818         uris = gtk_selection_data_get_uris (selection_data);
2819         if (!uris) {
2820                 gtk_drag_finish (context, FALSE, FALSE, time);
2821                 return;
2822         }
2823
2824         for (i = 0; uris[i]; i++) {
2825                 uri_list = g_slist_prepend (uri_list, (gpointer) uris[i]);
2826         }
2827
2828         ev_application_open_uri_list (EV_APP, uri_list,
2829                                       gtk_widget_get_screen (widget),
2830                                       0);
2831         gtk_drag_finish (context, TRUE, FALSE, time);
2832
2833         g_strfreev (uris);
2834         g_slist_free (uri_list);
2835 }
2836
2837
2838 static gboolean
2839 selection_update_idle_cb (EvView *view)
2840 {
2841         compute_selections (view,
2842                             view->selection_info.style,
2843                             &view->selection_info.start,
2844                             &view->motion);
2845         view->selection_update_id = 0;
2846         return FALSE;
2847 }
2848
2849 static gboolean
2850 selection_scroll_timeout_cb (EvView *view)
2851 {
2852         gint x, y, shift = 0;
2853         GtkWidget *widget = GTK_WIDGET (view);
2854
2855         gtk_widget_get_pointer (widget, &x, &y);
2856
2857         if (y > widget->allocation.height) {
2858                 shift = (y - widget->allocation.height) / 2;
2859         } else if (y < 0) {
2860                 shift = y / 2;
2861         }
2862
2863         if (shift)
2864                 gtk_adjustment_set_value (view->vadjustment,
2865                                           CLAMP (view->vadjustment->value + shift,
2866                                           view->vadjustment->lower,
2867                                           view->vadjustment->upper -
2868                                           view->vadjustment->page_size));
2869
2870         if (x > widget->allocation.width) {
2871                 shift = (x - widget->allocation.width) / 2;
2872         } else if (x < 0) {
2873                 shift = x / 2;
2874         }
2875
2876         if (shift)
2877                 gtk_adjustment_set_value (view->hadjustment,
2878                                           CLAMP (view->hadjustment->value + shift,
2879                                           view->hadjustment->lower,
2880                                           view->hadjustment->upper -
2881                                           view->hadjustment->page_size));
2882
2883         return TRUE;
2884 }
2885
2886 static gboolean
2887 ev_view_drag_update_momentum (EvView *view)
2888 {
2889         int i;
2890         if (!view->drag_info.in_drag)
2891                 return FALSE;
2892
2893         for (i = DRAG_HISTORY - 1; i > 0; i--) {
2894                 view->drag_info.buffer[i].x = view->drag_info.buffer[i-1].x;
2895                 view->drag_info.buffer[i].y = view->drag_info.buffer[i-1].y;
2896         }
2897
2898         /* Momentum is a moving average of 10ms granularity over
2899          * the last 100ms with each 10ms stored in buffer.
2900          */
2901
2902         view->drag_info.momentum.x = (view->drag_info.buffer[DRAG_HISTORY - 1].x - view->drag_info.buffer[0].x);
2903         view->drag_info.momentum.y = (view->drag_info.buffer[DRAG_HISTORY - 1].y - view->drag_info.buffer[0].y);
2904
2905         return TRUE;
2906 }
2907
2908 static gboolean
2909 ev_view_scroll_drag_release (EvView *view)
2910 {
2911         gdouble dhadj_value, dvadj_value;
2912         gdouble oldhadjustment, oldvadjustment;
2913
2914         view->drag_info.momentum.x /= 1.2;
2915         view->drag_info.momentum.y /= 1.2; /* Alter these constants to change "friction" */
2916
2917         dhadj_value = view->hadjustment->page_size *
2918                       (gdouble)view->drag_info.momentum.x / GTK_WIDGET (view)->allocation.width;
2919         dvadj_value = view->vadjustment->page_size *
2920                       (gdouble)view->drag_info.momentum.y / GTK_WIDGET (view)->allocation.height;
2921
2922         oldhadjustment = gtk_adjustment_get_value (view->hadjustment);
2923         oldvadjustment = gtk_adjustment_get_value (view->vadjustment);
2924
2925         if (((oldhadjustment + dhadj_value) > (view->hadjustment->upper - view->hadjustment->page_size)) ||
2926            ((oldhadjustment + dhadj_value) < 0))
2927                 view->drag_info.momentum.x *= -0.5; /* 0.5 rather than 1 means the edges absorb some momentum */
2928         if (((oldvadjustment + dvadj_value) > (view->vadjustment->upper - view->vadjustment->page_size)) ||
2929            ((oldvadjustment + dvadj_value) < 0))
2930                 view->drag_info.momentum.y *= -0.5;
2931
2932         gtk_adjustment_set_value (view->hadjustment,
2933                                 MIN (oldhadjustment + dhadj_value,
2934                                 view->hadjustment->upper - view->hadjustment->page_size));
2935         gtk_adjustment_set_value (view->vadjustment,
2936                                 MIN (oldvadjustment + dvadj_value,
2937                                 view->vadjustment->upper - view->vadjustment->page_size));
2938
2939         if (((view->drag_info.momentum.x < 1) && (view->drag_info.momentum.x > -1)) &&
2940            ((view->drag_info.momentum.y < 1) && (view->drag_info.momentum.y > -1)))
2941                 return FALSE;
2942         else
2943                 return TRUE;
2944 }
2945
2946 static gboolean
2947 ev_view_motion_notify_event (GtkWidget      *widget,
2948                              GdkEventMotion *event)
2949 {
2950         EvView *view = EV_VIEW (widget);
2951         gint x, y;
2952
2953         if (!view->document)
2954                 return FALSE;
2955
2956
2957         if (event->is_hint || event->window != view->layout.bin_window) {
2958             gtk_widget_get_pointer (widget, &x, &y);
2959         } else {
2960             x = event->x;
2961             y = event->y;
2962         }
2963
2964         if (view->scroll_info.autoscrolling) {
2965                 view->scroll_info.last_y = y;
2966                 return TRUE;
2967         }
2968
2969         if (view->selection_info.in_drag) {
2970                 if (gtk_drag_check_threshold (widget,
2971                                               view->selection_info.start.x,
2972                                               view->selection_info.start.y,
2973                                               x, y)) {
2974                         GtkTargetList *target_list = gtk_target_list_new (NULL, 0);
2975
2976                         gtk_target_list_add_text_targets (target_list, TARGET_DND_TEXT);
2977
2978                         gtk_drag_begin (widget, target_list,
2979                                         GDK_ACTION_COPY,
2980                                         1, (GdkEvent *)event);
2981
2982                         view->selection_info.in_drag = FALSE;
2983
2984                         gtk_target_list_unref (target_list);
2985
2986                         return TRUE;
2987                 }
2988         } else if (view->image_dnd_info.in_drag) {
2989                 if (gtk_drag_check_threshold (widget,
2990                                               view->selection_info.start.x,
2991                                               view->selection_info.start.y,
2992                                               x, y)) {
2993                         GtkTargetList *target_list = gtk_target_list_new (NULL, 0);
2994
2995                         gtk_target_list_add_uri_targets (target_list, TARGET_DND_URI);
2996                         gtk_target_list_add_image_targets (target_list, TARGET_DND_IMAGE, TRUE);
2997
2998                         gtk_drag_begin (widget, target_list,
2999                                         GDK_ACTION_COPY,
3000                                         1, (GdkEvent *)event);
3001
3002                         view->image_dnd_info.in_drag = FALSE;
3003
3004                         gtk_target_list_unref (target_list);
3005
3006                         return TRUE;
3007                 }
3008         }
3009
3010         switch (view->pressed_button) {
3011         case 1:
3012                 /* For the Evince 0.4.x release, we limit selection to un-rotated
3013                  * documents only.
3014                  */
3015                 if (view->rotation != 0)
3016                         return FALSE;
3017
3018                 /* Schedule timeout to scroll during selection and additionally
3019                  * scroll once to allow arbitrary speed. */
3020                 if (!view->selection_scroll_id)
3021                     view->selection_scroll_id = g_timeout_add (SCROLL_TIME,
3022                                                                (GSourceFunc)selection_scroll_timeout_cb,
3023                                                                view);
3024                 else
3025                     selection_scroll_timeout_cb (view);
3026
3027                 view->selection_info.in_selection = TRUE;
3028                 view->motion.x = x + view->scroll_x;
3029                 view->motion.y = y + view->scroll_y;
3030
3031                 /* Queue an idle to handle the motion.  We do this because
3032                  * handling any selection events in the motion could be slower
3033                  * than new motion events reach us.  We always put it in the
3034                  * idle to make sure we catch up and don't visibly lag the
3035                  * mouse. */
3036                 if (!view->selection_update_id)
3037                         view->selection_update_id = g_idle_add ((GSourceFunc)selection_update_idle_cb, view);
3038
3039                 return TRUE;
3040         case 2:
3041                 if (!view->drag_info.in_drag) {
3042                         gboolean start;
3043                         int i;
3044
3045                         start = gtk_drag_check_threshold (widget,
3046                                                           view->drag_info.start.x,
3047                                                           view->drag_info.start.y,
3048                                                           event->x_root,
3049                                                           event->y_root);
3050                         view->drag_info.in_drag = start;
3051                         view->drag_info.drag_timeout_id = g_timeout_add (10,
3052                                 (GSourceFunc)ev_view_drag_update_momentum, view);
3053                         /* Set 100 to choose how long it takes to build up momentum */
3054                         /* Clear out previous momentum info: */
3055                         for (i = 0; i < DRAG_HISTORY; i++) {
3056                                 view->drag_info.buffer[i].x = event->x;
3057                                 view->drag_info.buffer[i].y = event->y;
3058                         }
3059                         view->drag_info.momentum.x = 0;
3060                         view->drag_info.momentum.y = 0;
3061                 }
3062
3063                 if (view->drag_info.in_drag) {
3064                         int dx, dy;
3065                         gdouble dhadj_value, dvadj_value;
3066
3067                         view->drag_info.buffer[0].x = event->x;
3068                         view->drag_info.buffer[0].y = event->y;
3069
3070                         dx = event->x_root - view->drag_info.start.x;
3071                         dy = event->y_root - view->drag_info.start.y;
3072
3073                         dhadj_value = view->hadjustment->page_size *
3074                                       (gdouble)dx / widget->allocation.width;
3075                         dvadj_value = view->vadjustment->page_size *
3076                                       (gdouble)dy / widget->allocation.height;
3077
3078                         /* clamp scrolling to visible area */
3079                         gtk_adjustment_set_value (view->hadjustment,
3080                                                   MIN(view->drag_info.hadj - dhadj_value,
3081                                                       view->hadjustment->upper -
3082                                                       view->hadjustment->page_size));
3083                         gtk_adjustment_set_value (view->vadjustment,
3084                                                   MIN(view->drag_info.vadj - dvadj_value,
3085                                                       view->vadjustment->upper -
3086                                                       view->vadjustment->page_size));
3087
3088                         return TRUE;
3089                 }
3090
3091                 break;
3092         default:
3093                 ev_view_handle_cursor_over_xy (view, x, y);
3094         }
3095
3096         return FALSE;
3097 }
3098
3099 static gboolean
3100 ev_view_button_release_event (GtkWidget      *widget,
3101                               GdkEventButton *event)
3102 {
3103         EvView *view = EV_VIEW (widget);
3104         EvLink *link = NULL;
3105
3106         view->image_dnd_info.in_drag = FALSE;
3107
3108         if (view->scroll_info.autoscrolling) {
3109                 ev_view_autoscroll_stop (view);
3110                 view->pressed_button = -1;
3111
3112                 return TRUE;
3113         }
3114
3115         if (view->drag_info.in_drag) {
3116                 view->drag_info.release_timeout_id =
3117                         g_timeout_add (20,
3118                                        (GSourceFunc)ev_view_scroll_drag_release, view);
3119         }
3120
3121         if (view->document && !view->drag_info.in_drag && view->pressed_button != 3) {
3122                 link = ev_view_get_link_at_location (view, event->x, event->y);
3123         }
3124
3125         view->drag_info.in_drag = FALSE;
3126
3127         if (view->pressed_button == 2) {
3128                 ev_view_handle_cursor_over_xy (view, event->x, event->y);
3129         }
3130
3131         view->pressed_button = -1;
3132
3133         if (view->selection_scroll_id) {
3134             g_source_remove (view->selection_scroll_id);
3135             view->selection_scroll_id = 0;
3136         }
3137         if (view->selection_update_id) {
3138             g_source_remove (view->selection_update_id);
3139             view->selection_update_id = 0;
3140         }
3141
3142         if (!view->selection_info.in_selection &&
3143             view->selection_info.style != EV_SELECTION_STYLE_GLYPH) {
3144                 compute_selections (view,
3145                                     view->selection_info.style,
3146                                     &(view->selection_info.start),
3147                                     &(view->selection_info.start));
3148         }
3149
3150         if (view->selection_info.selections) {
3151                 clear_link_selected (view);
3152                 ev_view_update_primary_selection (view);
3153
3154                 if (view->selection_info.in_drag) {
3155                         clear_selection (view);
3156                         gtk_widget_queue_draw (widget);
3157                 }
3158
3159                 view->selection_info.in_drag = FALSE;
3160         } else if (link) {
3161                 if (event->button == 2) {
3162                         EvLinkAction    *action;
3163                         EvLinkActionType type;
3164
3165                         action = ev_link_get_action (link);
3166                         if (!action)
3167                                 return FALSE;
3168
3169                         type = ev_link_action_get_action_type (action);
3170                         if (type == EV_LINK_ACTION_TYPE_GOTO_DEST) {
3171                                 g_signal_emit (view,
3172                                                signals[SIGNAL_EXTERNAL_LINK],
3173                                                0, action);
3174                         }
3175                 } else {
3176                         ev_view_handle_link (view, link);
3177                 }
3178         } else if (view->presentation) {
3179                 switch (event->button) {
3180                         case 1:
3181                                 ev_view_next_page (view);
3182                                 return TRUE;
3183                         case 3:
3184                                 ev_view_previous_page (view);
3185                                 return TRUE;
3186                 }
3187         }
3188
3189         return FALSE;
3190 }
3191
3192 /* Goto Window */
3193 /* Cut and paste from gtkwindow.c */
3194 static void
3195 send_focus_change (GtkWidget *widget,
3196                    gboolean   in)
3197 {
3198         GdkEvent *fevent = gdk_event_new (GDK_FOCUS_CHANGE);
3199
3200         g_object_ref (widget);
3201
3202         if (in)
3203                 GTK_WIDGET_SET_FLAGS (widget, GTK_HAS_FOCUS);
3204         else
3205                 GTK_WIDGET_UNSET_FLAGS (widget, GTK_HAS_FOCUS);
3206
3207         fevent->focus_change.type = GDK_FOCUS_CHANGE;
3208         fevent->focus_change.window = g_object_ref (widget->window);
3209         fevent->focus_change.in = in;
3210
3211         gtk_widget_event (widget, fevent);
3212
3213         g_object_notify (G_OBJECT (widget), "has-focus");
3214
3215         g_object_unref (widget);
3216         gdk_event_free (fevent);
3217 }
3218
3219 static void
3220 ev_view_goto_window_hide (EvView *view)
3221 {
3222         /* send focus-in event */
3223         send_focus_change (view->goto_entry, FALSE);
3224         gtk_widget_hide (view->goto_window);
3225         gtk_entry_set_text (GTK_ENTRY (view->goto_entry), "");
3226 }
3227
3228 static gboolean
3229 ev_view_goto_window_delete_event (GtkWidget   *widget,
3230                                   GdkEventAny *event,
3231                                   EvView      *view)
3232 {
3233         ev_view_goto_window_hide (view);
3234
3235         return TRUE;
3236 }
3237
3238 static gboolean
3239 key_is_numeric (guint keyval)
3240 {
3241         return ((keyval >= GDK_0 && keyval <= GDK_9) ||
3242                 (keyval >= GDK_KP_0 && keyval <= GDK_KP_9));
3243 }
3244
3245 static gboolean
3246 ev_view_goto_window_key_press_event (GtkWidget   *widget,
3247                                      GdkEventKey *event,
3248                                      EvView      *view)
3249 {
3250         switch (event->keyval) {
3251                 case GDK_Escape:
3252                 case GDK_Tab:
3253                 case GDK_KP_Tab:
3254                 case GDK_ISO_Left_Tab:
3255                         ev_view_goto_window_hide (view);
3256                         return TRUE;
3257                 case GDK_Return:
3258                 case GDK_KP_Enter:
3259                 case GDK_ISO_Enter:
3260                 case GDK_BackSpace:
3261                 case GDK_Delete:
3262                         return FALSE;
3263                 default:
3264                         if (!key_is_numeric (event->keyval))
3265                                 return TRUE;
3266         }
3267
3268         return FALSE;
3269 }
3270
3271 static gboolean
3272 ev_view_goto_window_button_press_event (GtkWidget      *widget,
3273                                         GdkEventButton *event,
3274                                         EvView         *view)
3275 {
3276         ev_view_goto_window_hide (view);
3277
3278         return TRUE;
3279 }
3280
3281 static void
3282 ev_view_goto_entry_activate (GtkEntry *entry,
3283                              EvView   *view)
3284 {
3285         const gchar *text;
3286         gint         page;
3287
3288         text = gtk_entry_get_text (entry);
3289         page = atoi (text) - 1;
3290
3291         ev_view_goto_window_hide (view);
3292
3293         if (page >= 0 &&
3294             page < ev_page_cache_get_n_pages (view->page_cache))
3295                 ev_page_cache_set_current_page (view->page_cache, page);
3296 }
3297
3298 static void
3299 ev_view_goto_window_create (EvView *view)
3300 {
3301         GtkWidget *frame, *hbox, *toplevel, *label;
3302
3303         toplevel = gtk_widget_get_toplevel (GTK_WIDGET (view));
3304
3305         if (view->goto_window) {
3306                 if (GTK_WINDOW (toplevel)->group)
3307                         gtk_window_group_add_window (GTK_WINDOW (toplevel)->group,
3308                                                      GTK_WINDOW (view->goto_window));
3309                 else if (GTK_WINDOW (view->goto_window)->group)
3310                         gtk_window_group_remove_window (GTK_WINDOW (view->goto_window)->group,
3311                                                         GTK_WINDOW (view->goto_window));
3312                 return;
3313         }
3314
3315         view->goto_window = gtk_window_new (GTK_WINDOW_POPUP);
3316
3317         if (GTK_WINDOW (toplevel)->group)
3318                 gtk_window_group_add_window (GTK_WINDOW (toplevel)->group,
3319                                              GTK_WINDOW (view->goto_window));
3320
3321         gtk_window_set_modal (GTK_WINDOW (view->goto_window), TRUE);
3322
3323         g_signal_connect (view->goto_window, "delete_event",
3324                           G_CALLBACK (ev_view_goto_window_delete_event),
3325                           view);
3326         g_signal_connect (view->goto_window, "key_press_event",
3327                           G_CALLBACK (ev_view_goto_window_key_press_event),
3328                           view);
3329         g_signal_connect (view->goto_window, "button_press_event",
3330                           G_CALLBACK (ev_view_goto_window_button_press_event),
3331                           view);
3332
3333         frame = gtk_frame_new (NULL);
3334         gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_ETCHED_IN);
3335         gtk_container_add (GTK_CONTAINER (view->goto_window), frame);
3336         gtk_widget_show (frame);
3337
3338         hbox = gtk_hbox_new (FALSE, 0);
3339         gtk_container_set_border_width (GTK_CONTAINER (hbox), 3);
3340         gtk_container_add (GTK_CONTAINER (frame), hbox);
3341         gtk_widget_show (hbox);
3342
3343         label = gtk_label_new(_("Jump to page:"));
3344         gtk_box_pack_start (GTK_BOX (hbox), label, TRUE, TRUE, 3);
3345         gtk_widget_show (label);
3346         gtk_widget_realize (label);
3347
3348         view->goto_entry = gtk_entry_new ();
3349         g_signal_connect (view->goto_entry, "activate",
3350                           G_CALLBACK (ev_view_goto_entry_activate),
3351                           view);
3352         gtk_box_pack_start (GTK_BOX (hbox), view->goto_entry, TRUE, TRUE, 0);
3353         gtk_widget_show (view->goto_entry);
3354         gtk_widget_realize (view->goto_entry);
3355 }
3356
3357 static void
3358 ev_view_goto_entry_grab_focus (EvView *view)
3359 {
3360         GtkWidgetClass *entry_parent_class;
3361
3362         entry_parent_class = g_type_class_peek_parent (GTK_ENTRY_GET_CLASS (view->goto_entry));
3363         (entry_parent_class->grab_focus) (view->goto_entry);
3364
3365         send_focus_change (view->goto_entry, TRUE);
3366 }
3367
3368 static void
3369 ev_view_goto_window_send_key_event (EvView   *view,
3370                                     GdkEvent *event)
3371 {
3372         GdkEventKey *new_event;
3373         GdkScreen   *screen;
3374
3375         /* Move goto window off screen */
3376         screen = gtk_widget_get_screen (GTK_WIDGET (view));
3377         gtk_window_move (GTK_WINDOW (view->goto_window),
3378                          gdk_screen_get_width (screen) + 1,
3379                          gdk_screen_get_height (screen) + 1);
3380         gtk_widget_show (view->goto_window);
3381
3382         new_event = (GdkEventKey *) gdk_event_copy (event);
3383         g_object_unref (new_event->window);
3384         new_event->window = g_object_ref (view->goto_window->window);
3385         gtk_widget_realize (view->goto_window);
3386
3387         gtk_widget_event (view->goto_window, (GdkEvent *)new_event);
3388         gdk_event_free ((GdkEvent *)new_event);
3389         gtk_widget_hide (view->goto_window);
3390 }
3391
3392 static gboolean
3393 ev_view_key_press_event (GtkWidget   *widget,
3394                          GdkEventKey *event)
3395 {
3396         EvView *view = EV_VIEW (widget);
3397         EvPresentationState current;
3398
3399         if (!view->document)
3400                 return FALSE;
3401
3402         if (!view->presentation ||
3403             view->presentation_state == EV_PRESENTATION_END)
3404                 return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
3405
3406
3407         current = view->presentation_state;
3408
3409         switch (event->keyval) {
3410                 case GDK_b:
3411                 case GDK_B:
3412                 case GDK_period:
3413                 case GDK_KP_Decimal:
3414                         view->presentation_state =
3415                                 (view->presentation_state == EV_PRESENTATION_BLACK) ?
3416                                 EV_PRESENTATION_NORMAL : EV_PRESENTATION_BLACK;
3417                         break;
3418                 case GDK_w:
3419                 case GDK_W:
3420                         view->presentation_state =
3421                                 (view->presentation_state == EV_PRESENTATION_WHITE) ?
3422                                 EV_PRESENTATION_NORMAL : EV_PRESENTATION_WHITE;
3423                         break;
3424                 default:
3425                         if (view->presentation_state == EV_PRESENTATION_BLACK ||
3426                             view->presentation_state == EV_PRESENTATION_WHITE) {
3427                                 view->presentation_state = EV_PRESENTATION_NORMAL;
3428                         }
3429         }
3430
3431         if (current == view->presentation_state) {
3432                 if (ev_page_cache_get_n_pages (view->page_cache) > 1 &&
3433                     key_is_numeric (event->keyval)) {
3434                         gint x, y;
3435
3436                         ev_view_goto_window_create (view);
3437                         ev_view_goto_window_send_key_event (view, (GdkEvent *)event);
3438                         gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
3439                         gtk_window_move (GTK_WINDOW (view->goto_window), x, y);
3440                         gtk_widget_show (view->goto_window);
3441                         ev_view_goto_entry_grab_focus (view);
3442
3443                         return TRUE;
3444                 }
3445
3446                 return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
3447         }
3448
3449         switch (view->presentation_state) {
3450                 case EV_PRESENTATION_NORMAL:
3451                 case EV_PRESENTATION_BLACK:
3452                         gdk_window_set_background (view->layout.bin_window,
3453                                                    &widget->style->black);
3454                         break;
3455                 case EV_PRESENTATION_WHITE:
3456                         gdk_window_set_background (view->layout.bin_window,
3457                                                    &widget->style->white);
3458                         break;
3459                 default:
3460                         return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
3461         }
3462
3463         gtk_widget_queue_draw (widget);
3464         return TRUE;
3465 }
3466
3467 static gint
3468 ev_view_focus_in (GtkWidget     *widget,
3469                   GdkEventFocus *event)
3470 {
3471         if (EV_VIEW (widget)->pixbuf_cache)
3472                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
3473         gtk_widget_queue_draw (widget);
3474
3475         return FALSE;
3476 }
3477
3478 static gint
3479 ev_view_focus_out (GtkWidget     *widget,
3480                      GdkEventFocus *event)
3481 {
3482         if (EV_VIEW (widget)->goto_window)
3483                 ev_view_goto_window_hide (EV_VIEW (widget));
3484
3485         if (EV_VIEW (widget)->pixbuf_cache)
3486                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
3487         gtk_widget_queue_draw (widget);
3488
3489         return FALSE;
3490 }
3491
3492 static gboolean
3493 ev_view_leave_notify_event (GtkWidget *widget, GdkEventCrossing   *event)
3494 {
3495         EvView *view = EV_VIEW (widget);
3496
3497         if (view->cursor != EV_VIEW_CURSOR_NORMAL)
3498                 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
3499
3500         return FALSE;
3501 }
3502
3503 static gboolean
3504 ev_view_enter_notify_event (GtkWidget *widget, GdkEventCrossing   *event)
3505 {
3506         EvView *view = EV_VIEW (widget);
3507
3508         ev_view_handle_cursor_over_xy (view, event->x, event->y);
3509
3510         return FALSE;
3511 }
3512
3513 static void
3514 ev_view_style_set (GtkWidget *widget,
3515                    GtkStyle  *old_style)
3516 {
3517         if (EV_VIEW (widget)->pixbuf_cache)
3518                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
3519
3520         GTK_WIDGET_CLASS (ev_view_parent_class)->style_set (widget, old_style);
3521 }
3522
3523 /*** Drawing ***/
3524
3525 static guint32
3526 ev_gdk_color_to_rgb (const GdkColor *color)
3527 {
3528   guint32 result;
3529   result = (0xff0000 | (color->red & 0xff00));
3530   result <<= 8;
3531   result |= ((color->green & 0xff00) | (color->blue >> 8));
3532   return result;
3533 }
3534
3535 static void
3536 draw_rubberband (GtkWidget *widget, GdkWindow *window,
3537                  const GdkRectangle *rect, guchar alpha)
3538 {
3539         GdkGC *gc;
3540         GdkPixbuf *pixbuf;
3541         GdkColor *fill_color_gdk;
3542         guint fill_color;
3543
3544         fill_color_gdk = gdk_color_copy (&GTK_WIDGET (widget)->style->base[GTK_STATE_SELECTED]);
3545         fill_color = ev_gdk_color_to_rgb (fill_color_gdk) << 8 | alpha;
3546
3547         pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE, 8,
3548                                  rect->width, rect->height);
3549         gdk_pixbuf_fill (pixbuf, fill_color);
3550
3551         gdk_draw_pixbuf (window, NULL, pixbuf,
3552                          0, 0,
3553                          rect->x - EV_VIEW (widget)->scroll_x, rect->y - EV_VIEW (widget)->scroll_y,
3554                          rect->width, rect->height,
3555                          GDK_RGB_DITHER_NONE,
3556                          0, 0);
3557
3558         g_object_unref (pixbuf);
3559
3560         gc = gdk_gc_new (window);
3561         gdk_gc_set_rgb_fg_color (gc, fill_color_gdk);
3562         gdk_draw_rectangle (window, gc, FALSE,
3563                             rect->x - EV_VIEW (widget)->scroll_x, rect->y - EV_VIEW (widget)->scroll_y,
3564                             rect->width - 1,
3565                             rect->height - 1);
3566         g_object_unref (gc);
3567
3568         gdk_color_free (fill_color_gdk);
3569 }
3570
3571
3572 static void
3573 highlight_find_results (EvView *view, int page)
3574 {
3575         gint i, n_results = 0;
3576
3577         n_results = ev_view_find_get_n_results (view, page);
3578
3579         for (i = 0; i < n_results; i++) {
3580                 EvRectangle *rectangle;
3581                 GdkRectangle view_rectangle;
3582                 guchar alpha;
3583
3584                 if (i == view->find_result && page == view->current_page) {
3585                         alpha = 0x90;
3586                 } else {
3587                         alpha = 0x20;
3588                 }
3589
3590                 rectangle = ev_view_find_get_result (view, page, i);
3591                 doc_rect_to_view_rect (view, page, rectangle, &view_rectangle);
3592                 draw_rubberband (GTK_WIDGET (view), view->layout.bin_window,
3593                                  &view_rectangle, alpha);
3594         }
3595 }
3596
3597 static void
3598 draw_loading_text (EvView       *view,
3599                    GdkRectangle *page_area,
3600                    GdkRectangle *expose_area)
3601 {
3602         cairo_t *cr;
3603         gint     width, height;
3604
3605         if (!view->loading_text) {
3606                 const gchar *loading_text = _("Loading...");
3607                 PangoLayout *layout;
3608                 PangoFontDescription *font_desc;
3609                 PangoRectangle logical_rect;
3610                 gint target_width;
3611                 gdouble real_scale;
3612
3613                 ev_document_fc_mutex_lock ();
3614
3615                 layout = gtk_widget_create_pango_layout (GTK_WIDGET (view), loading_text);
3616
3617                 font_desc = pango_font_description_new ();
3618
3619                 /* We set the font to be 10 points, get the size, and scale appropriately */
3620                 pango_font_description_set_size (font_desc, 10 * PANGO_SCALE);
3621                 pango_layout_set_font_description (layout, font_desc);
3622                 pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
3623
3624                 target_width = MAX (page_area->width / 2, 1);
3625                 real_scale = ((double)target_width / (double) logical_rect.width) * (PANGO_SCALE * 10);
3626                 pango_font_description_set_size (font_desc, (int)real_scale);
3627                 pango_layout_set_font_description (layout, font_desc);
3628                 pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
3629
3630                 view->loading_text = cairo_image_surface_create (CAIRO_FORMAT_ARGB32,
3631                                                                  logical_rect.width,
3632                                                                  logical_rect.height);
3633                 cr = cairo_create (view->loading_text);
3634                 cairo_set_source_rgb (cr,
3635                                       155 / (double)255,
3636                                       155 / (double)255,
3637                                       155 / (double)255);
3638                 pango_cairo_show_layout (cr, layout);
3639                 cairo_destroy (cr);
3640
3641                 pango_font_description_free (font_desc);
3642                 g_object_unref (layout);
3643
3644                 ev_document_fc_mutex_unlock ();
3645         }
3646
3647         width = (page_area->width - cairo_image_surface_get_width (view->loading_text)) / 2;
3648         height = (page_area->height - cairo_image_surface_get_height (view->loading_text)) / 2;
3649
3650         cr = gdk_cairo_create (view->layout.bin_window);
3651         cairo_translate (cr,
3652                          page_area->x + width,
3653                          page_area->y + height);
3654         cairo_set_source_surface (cr, view->loading_text, 0, 0);
3655         cairo_paint (cr);
3656         cairo_destroy (cr);
3657 }
3658
3659 static void
3660 draw_one_page (EvView       *view,
3661                gint          page,
3662                cairo_t      *cr,
3663                GdkRectangle *page_area,
3664                GtkBorder    *border,
3665                GdkRectangle *expose_area,
3666                gboolean     *page_ready)
3667 {
3668         GdkRectangle overlap;
3669         GdkRectangle real_page_area;
3670
3671         g_assert (view->document);
3672
3673         if (! gdk_rectangle_intersect (page_area, expose_area, &overlap))
3674                 return;
3675
3676         /* Render the document itself */
3677         real_page_area = *page_area;
3678
3679         real_page_area.x += border->left;
3680         real_page_area.y += border->top;
3681         real_page_area.width -= (border->left + border->right);
3682         real_page_area.height -= (border->top + border->bottom);
3683         *page_ready = TRUE;
3684
3685         if (!view->presentation) {
3686                 gint current_page;
3687
3688                 current_page = ev_page_cache_get_current_page (view->page_cache);
3689                 ev_document_misc_paint_one_page (view->layout.bin_window,
3690                                                  GTK_WIDGET (view),
3691                                                  page_area, border,
3692                                                  page == current_page);
3693         }
3694
3695         if (gdk_rectangle_intersect (&real_page_area, expose_area, &overlap)) {
3696                 gint             width, height;
3697                 gint             page_width, page_height;
3698                 cairo_surface_t *page_surface = NULL;
3699                 gint             selection_width, selection_height;
3700                 cairo_surface_t *selection_surface = NULL;
3701
3702                 page_surface = ev_pixbuf_cache_get_surface (view->pixbuf_cache, page);
3703
3704                 if (!page_surface) {
3705                         if (!view->presentation) {
3706                                 draw_loading_text (view,
3707                                                    &real_page_area,
3708                                                    expose_area);
3709                         }
3710
3711                         *page_ready = FALSE;
3712
3713                         return;
3714                 }
3715
3716                 ev_page_cache_get_size (view->page_cache,
3717                                         page, view->rotation,
3718                                         view->scale,
3719                                         &width, &height);
3720
3721                 page_width = cairo_image_surface_get_width (page_surface);
3722                 page_height = cairo_image_surface_get_height (page_surface);
3723
3724                 cairo_save (cr);
3725                 cairo_translate (cr, overlap.x, overlap.y);
3726
3727                 if (width != page_width || height != page_height) {
3728                         cairo_pattern_set_filter (cairo_get_source (cr),
3729                                                   CAIRO_FILTER_FAST);
3730                         cairo_scale (cr,
3731                                      (gdouble)width / page_width,
3732                                      (gdouble)height / page_height);
3733                 }
3734
3735                 cairo_surface_set_device_offset (page_surface,
3736                                                  overlap.x - real_page_area.x,
3737                                                  overlap.y - real_page_area.y);
3738                 cairo_set_source_surface (cr, page_surface, 0, 0);
3739                 cairo_paint (cr);
3740                 cairo_restore (cr);
3741
3742                 /* Get the selection pixbuf iff we have something to draw */
3743                 if (find_selection_for_page (view, page) &&
3744                     view->selection_mode == EV_VIEW_SELECTION_TEXT) {
3745                         selection_surface =
3746                                 ev_pixbuf_cache_get_selection_surface (view->pixbuf_cache,
3747                                                                        page,
3748                                                                        view->scale,
3749                                                                        NULL);
3750                 }
3751
3752                 if (!selection_surface) {
3753                         return;
3754                 }
3755
3756                 selection_width = cairo_image_surface_get_width (selection_surface);
3757                 selection_height = cairo_image_surface_get_height (selection_surface);
3758
3759                 cairo_save (cr);
3760                 cairo_translate (cr, overlap.x, overlap.y);
3761
3762                 if (width != selection_width || height != selection_height) {
3763                         cairo_pattern_set_filter (cairo_get_source (cr),
3764                                                   CAIRO_FILTER_FAST);
3765                         cairo_scale (cr,
3766                                      (gdouble)width / selection_width,
3767                                      (gdouble)height / selection_height);
3768                 }
3769
3770                 cairo_surface_set_device_offset (selection_surface,
3771                                                  overlap.x - real_page_area.x,
3772                                                  overlap.y - real_page_area.y);
3773                 cairo_set_source_surface (cr, selection_surface, 0, 0);
3774                 cairo_paint (cr);
3775                 cairo_restore (cr);
3776         }
3777 }
3778
3779 /*** GObject functions ***/
3780
3781 static void
3782 ev_view_finalize (GObject *object)
3783 {
3784         EvView *view = EV_VIEW (object);
3785
3786         clear_selection (view);
3787         clear_link_selected (view);
3788
3789         if (view->image_dnd_info.image)
3790                 g_object_unref (view->image_dnd_info.image);
3791         view->image_dnd_info.image = NULL;
3792
3793         G_OBJECT_CLASS (ev_view_parent_class)->finalize (object);
3794 }
3795
3796 static void
3797 ev_view_destroy (GtkObject *object)
3798 {
3799         EvView *view = EV_VIEW (object);
3800
3801         if (view->document) {
3802                 g_object_unref (view->document);
3803                 view->document = NULL;
3804         }
3805
3806         if (view->pixbuf_cache) {
3807                 g_object_unref (view->pixbuf_cache);
3808                 view->pixbuf_cache = NULL;
3809         }
3810
3811         if (view->goto_window) {
3812                 gtk_widget_destroy (view->goto_window);
3813                 view->goto_window = NULL;
3814                 view->goto_entry = NULL;
3815         }
3816
3817         if (view->selection_scroll_id) {
3818             g_source_remove (view->selection_scroll_id);
3819             view->selection_scroll_id = 0;
3820         }
3821
3822         if (view->selection_update_id) {
3823             g_source_remove (view->selection_update_id);
3824             view->selection_update_id = 0;
3825         }
3826
3827         if (view->loading_text) {
3828                 cairo_surface_destroy (view->loading_text);
3829                 view->loading_text = NULL;
3830         }
3831
3832         if (view->scroll_info.timeout_id) {
3833             g_source_remove (view->scroll_info.timeout_id);
3834             view->scroll_info.timeout_id = 0;
3835         }
3836
3837         if (view->drag_info.drag_timeout_id) {
3838                 g_source_remove (view->drag_info.drag_timeout_id);
3839                 view->drag_info.drag_timeout_id = 0;
3840         }
3841
3842         if (view->drag_info.release_timeout_id) {
3843                 g_source_remove (view->drag_info.release_timeout_id);
3844                 view->drag_info.release_timeout_id = 0;
3845         }
3846
3847         ev_view_presentation_transition_stop (view);
3848
3849         ev_view_set_scroll_adjustments (GTK_LAYOUT (view), NULL, NULL);
3850
3851         GTK_OBJECT_CLASS (ev_view_parent_class)->destroy (object);
3852 }
3853
3854 static void
3855 ev_view_set_property (GObject      *object,
3856                       guint         prop_id,
3857                       const GValue *value,
3858                       GParamSpec   *pspec)
3859 {
3860         EvView *view = EV_VIEW (object);
3861
3862         switch (prop_id) {
3863                 case PROP_CONTINUOUS:
3864                         ev_view_set_continuous (view, g_value_get_boolean (value));
3865                         break;
3866                 case PROP_DUAL_PAGE:
3867                         ev_view_set_dual_page (view, g_value_get_boolean (value));
3868                         break;
3869                 case PROP_FULLSCREEN:
3870                         ev_view_set_fullscreen (view, g_value_get_boolean (value));
3871                         break;
3872                 case PROP_PRESENTATION:
3873                         ev_view_set_presentation (view, g_value_get_boolean (value));
3874                         break;
3875                 case PROP_SIZING_MODE:
3876                         ev_view_set_sizing_mode (view, g_value_get_enum (value));
3877                         break;
3878                 case PROP_ZOOM:
3879                         ev_view_set_zoom (view, g_value_get_double (value), FALSE);
3880                         break;
3881                 case PROP_ROTATION:
3882                         ev_view_set_rotation (view, g_value_get_int (value));
3883                         break;
3884                 default:
3885                         G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
3886         }
3887 }
3888
3889 static AtkObject *
3890 ev_view_get_accessible (GtkWidget *widget)
3891 {
3892         static gboolean first_time = TRUE;
3893
3894         if (first_time) {
3895                 AtkObjectFactory *factory;
3896                 AtkRegistry *registry;
3897                 GType derived_type;
3898                 GType derived_atk_type;
3899
3900                 /*
3901                  * Figure out whether accessibility is enabled by looking at the
3902                  * type of the accessible object which would be created for
3903                  * the parent type of EvView.
3904                  */
3905                 derived_type = g_type_parent (EV_TYPE_VIEW);
3906
3907                 registry = atk_get_default_registry ();
3908                 factory = atk_registry_get_factory (registry,
3909                                                     derived_type);
3910                 derived_atk_type = atk_object_factory_get_accessible_type (factory);
3911                 if (g_type_is_a (derived_atk_type, GTK_TYPE_ACCESSIBLE))
3912                         atk_registry_set_factory_type (registry,
3913                                                        EV_TYPE_VIEW,
3914                                                        ev_view_accessible_factory_get_type ());
3915                 first_time = FALSE;
3916         }
3917         return GTK_WIDGET_CLASS (ev_view_parent_class)->get_accessible (widget);
3918 }
3919
3920 static void
3921 ev_view_get_property (GObject *object,
3922                       guint prop_id,
3923                       GValue *value,
3924                       GParamSpec *pspec)
3925 {
3926         EvView *view = EV_VIEW (object);
3927
3928         switch (prop_id) {
3929                 case PROP_CONTINUOUS:
3930                         g_value_set_boolean (value, view->continuous);
3931                         break;
3932                 case PROP_DUAL_PAGE:
3933                         g_value_set_boolean (value, view->dual_page);
3934                         break;
3935                 case PROP_FULLSCREEN:
3936                         g_value_set_boolean (value, view->fullscreen);
3937                         break;
3938                 case PROP_PRESENTATION:
3939                         g_value_set_boolean (value, view->presentation);
3940                         break;
3941                 case PROP_SIZING_MODE:
3942                         g_value_set_enum (value, view->sizing_mode);
3943                         break;
3944                 case PROP_ZOOM:
3945                         g_value_set_double (value, view->scale);
3946                         break;
3947                 case PROP_ROTATION:
3948                         g_value_set_int (value, view->rotation);
3949                         break;
3950                 case PROP_HAS_SELECTION:
3951                         g_value_set_boolean (value,
3952                                              view->selection_info.selections != NULL);
3953                         break;
3954                 default:
3955                         G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
3956         }
3957 }
3958
3959 static void
3960 ev_view_class_init (EvViewClass *class)
3961 {
3962         GObjectClass *object_class = G_OBJECT_CLASS (class);
3963         GtkObjectClass *gtk_object_class = GTK_OBJECT_CLASS (class);
3964         GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
3965         GtkLayoutClass *layout_class = GTK_LAYOUT_CLASS (class);
3966         GtkBindingSet *binding_set;
3967
3968         object_class->finalize = ev_view_finalize;
3969         object_class->set_property = ev_view_set_property;
3970         object_class->get_property = ev_view_get_property;
3971
3972         widget_class->expose_event = ev_view_expose_event;
3973         widget_class->button_press_event = ev_view_button_press_event;
3974         widget_class->motion_notify_event = ev_view_motion_notify_event;
3975         widget_class->button_release_event = ev_view_button_release_event;
3976         widget_class->key_press_event = ev_view_key_press_event;
3977         widget_class->focus_in_event = ev_view_focus_in;
3978         widget_class->focus_out_event = ev_view_focus_out;
3979         widget_class->get_accessible = ev_view_get_accessible;
3980         widget_class->size_request = ev_view_size_request;
3981         widget_class->size_allocate = ev_view_size_allocate;
3982         widget_class->realize = ev_view_realize;
3983         widget_class->scroll_event = ev_view_scroll_event;
3984         widget_class->enter_notify_event = ev_view_enter_notify_event;
3985         widget_class->leave_notify_event = ev_view_leave_notify_event;
3986         widget_class->style_set = ev_view_style_set;
3987         widget_class->drag_data_get = ev_view_drag_data_get;
3988         widget_class->drag_motion = ev_view_drag_motion;
3989         widget_class->drag_data_received = ev_view_drag_data_received;
3990         widget_class->popup_menu = ev_view_popup_menu;
3991         widget_class->query_tooltip = ev_view_query_tooltip;
3992
3993         gtk_object_class->destroy = ev_view_destroy;
3994
3995         layout_class->set_scroll_adjustments = ev_view_set_scroll_adjustments;
3996
3997         class->binding_activated = ev_view_scroll;
3998
3999         signals[SIGNAL_BINDING_ACTIVATED] = g_signal_new ("binding_activated",
4000                          G_TYPE_FROM_CLASS (object_class),
4001                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
4002                          G_STRUCT_OFFSET (EvViewClass, binding_activated),
4003                          NULL, NULL,
4004                          ev_marshal_VOID__ENUM_BOOLEAN,
4005                          G_TYPE_NONE, 2,
4006                          GTK_TYPE_SCROLL_TYPE,
4007                          G_TYPE_BOOLEAN);
4008
4009         signals[SIGNAL_ZOOM_INVALID] = g_signal_new ("zoom-invalid",
4010                          G_TYPE_FROM_CLASS (object_class),
4011                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
4012                          G_STRUCT_OFFSET (EvViewClass, zoom_invalid),
4013                          NULL, NULL,
4014                          ev_marshal_VOID__VOID,
4015                          G_TYPE_NONE, 0, G_TYPE_NONE);
4016         signals[SIGNAL_HANDLE_LINK] = g_signal_new ("handle-link",
4017                          G_TYPE_FROM_CLASS (object_class),
4018                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
4019                          G_STRUCT_OFFSET (EvViewClass, handle_link),
4020                          NULL, NULL,
4021                          g_cclosure_marshal_VOID__OBJECT,
4022                          G_TYPE_NONE, 1,
4023                          G_TYPE_OBJECT);
4024         signals[SIGNAL_EXTERNAL_LINK] = g_signal_new ("external-link",
4025                          G_TYPE_FROM_CLASS (object_class),
4026                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
4027                          G_STRUCT_OFFSET (EvViewClass, external_link),
4028                          NULL, NULL,
4029                          g_cclosure_marshal_VOID__OBJECT,
4030                          G_TYPE_NONE, 1,
4031                          G_TYPE_OBJECT);
4032         signals[SIGNAL_POPUP_MENU] = g_signal_new ("popup",
4033                          G_TYPE_FROM_CLASS (object_class),
4034                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
4035                          G_STRUCT_OFFSET (EvViewClass, popup_menu),
4036                          NULL, NULL,
4037                          g_cclosure_marshal_VOID__OBJECT,
4038                          G_TYPE_NONE, 1,
4039                          G_TYPE_OBJECT);
4040
4041
4042         g_object_class_install_property (object_class,
4043                                          PROP_CONTINUOUS,
4044                                          g_param_spec_boolean ("continuous",
4045                                                                "Continuous",
4046                                                                "Continuous scrolling mode",
4047                                                                TRUE,
4048                                                                G_PARAM_READWRITE));
4049
4050         g_object_class_install_property (object_class,
4051                                          PROP_DUAL_PAGE,
4052                                          g_param_spec_boolean ("dual-page",
4053                                                                "Dual Page",
4054                                                                "Two pages visible at once",
4055                                                                FALSE,
4056                                                                G_PARAM_READWRITE));
4057         g_object_class_install_property (object_class,
4058                                          PROP_FULLSCREEN,
4059                                          g_param_spec_boolean ("fullscreen",
4060                                                                "Full Screen",
4061                                                                "Draw page in a fullscreen fashion",
4062                                                                FALSE,
4063                                                                G_PARAM_READWRITE));
4064         g_object_class_install_property (object_class,
4065                                          PROP_PRESENTATION,
4066                                          g_param_spec_boolean ("presentation",
4067                                                                "Presentation",
4068                                                                "Draw page in presentation mode",
4069                                                                TRUE,
4070                                                                G_PARAM_READWRITE));
4071
4072         g_object_class_install_property (object_class,
4073                                          PROP_SIZING_MODE,
4074                                          g_param_spec_enum ("sizing-mode",
4075                                                             "Sizing Mode",
4076                                                             "Sizing Mode",
4077                                                             EV_TYPE_SIZING_MODE,
4078                                                             EV_SIZING_FIT_WIDTH,
4079                                                             G_PARAM_READWRITE));
4080
4081         g_object_class_install_property (object_class,
4082                                          PROP_ZOOM,
4083                                          g_param_spec_double ("zoom",
4084                                                               "Zoom factor",
4085                                                               "Zoom factor",
4086                                                               0,
4087                                                               G_MAXDOUBLE,
4088                                                               1.0,
4089                                                               G_PARAM_READWRITE));
4090         g_object_class_install_property (object_class,
4091                                          PROP_ROTATION,
4092                                          g_param_spec_double ("rotation",
4093                                                               "Rotation",
4094                                                               "Rotation",
4095                                                               0,
4096                                                               360,
4097                                                               0,
4098                                                               G_PARAM_READWRITE));
4099         g_object_class_install_property (object_class,
4100                                          PROP_HAS_SELECTION,
4101                                          g_param_spec_boolean ("has-selection",
4102                                                                "Has selection",
4103                                                                "The view has selections",
4104                                                                FALSE,
4105                                                                G_PARAM_READABLE));
4106
4107         binding_set = gtk_binding_set_by_class (class);
4108
4109         add_scroll_binding_keypad (binding_set, GDK_Left,  0, GTK_SCROLL_STEP_BACKWARD, TRUE);
4110         add_scroll_binding_keypad (binding_set, GDK_Right, 0, GTK_SCROLL_STEP_FORWARD,  TRUE);
4111         add_scroll_binding_keypad (binding_set, GDK_Left,  GDK_MOD1_MASK, GTK_SCROLL_STEP_DOWN, TRUE);
4112         add_scroll_binding_keypad (binding_set, GDK_Right, GDK_MOD1_MASK, GTK_SCROLL_STEP_UP,  TRUE);
4113         add_scroll_binding_keypad (binding_set, GDK_Up,    0, GTK_SCROLL_STEP_BACKWARD, FALSE);
4114         add_scroll_binding_keypad (binding_set, GDK_Down,  0, GTK_SCROLL_STEP_FORWARD,  FALSE);
4115         add_scroll_binding_keypad (binding_set, GDK_Up,    GDK_MOD1_MASK, GTK_SCROLL_STEP_DOWN, FALSE);
4116         add_scroll_binding_keypad (binding_set, GDK_Down,  GDK_MOD1_MASK, GTK_SCROLL_STEP_UP,  FALSE);
4117         gtk_binding_entry_add_signal (binding_set, GDK_H, 0, "binding_activated", 2, GTK_TYPE_SCROLL_TYPE,
4118                                       GTK_SCROLL_STEP_BACKWARD, G_TYPE_BOOLEAN, TRUE);
4119         gtk_binding_entry_add_signal (binding_set, GDK_J, 0, "binding_activated", 2, GTK_TYPE_SCROLL_TYPE,
4120                                       GTK_SCROLL_STEP_FORWARD, G_TYPE_BOOLEAN, FALSE);
4121         gtk_binding_entry_add_signal (binding_set, GDK_K, 0, "binding_activated", 2, GTK_TYPE_SCROLL_TYPE,
4122                                       GTK_SCROLL_STEP_BACKWARD, G_TYPE_BOOLEAN, FALSE);
4123         gtk_binding_entry_add_signal (binding_set, GDK_L, 0, "binding_activated", 2, GTK_TYPE_SCROLL_TYPE,
4124                                       GTK_SCROLL_STEP_FORWARD, G_TYPE_BOOLEAN, TRUE);
4125
4126 }
4127
4128 static void
4129 ev_view_init (EvView *view)
4130 {
4131         GTK_WIDGET_SET_FLAGS (view, GTK_CAN_FOCUS);
4132
4133         view->spacing = 5;
4134         view->scale = 1.0;
4135         view->current_page = 0;
4136         view->pressed_button = -1;
4137         view->cursor = EV_VIEW_CURSOR_NORMAL;
4138         view->drag_info.in_drag = FALSE;
4139         view->scroll_info.autoscrolling = FALSE;
4140         view->selection_info.selections = NULL;
4141         view->selection_info.in_selection = FALSE;
4142         view->selection_info.in_drag = FALSE;
4143         view->selection_mode = EV_VIEW_SELECTION_TEXT;
4144         view->continuous = TRUE;
4145         view->dual_page = FALSE;
4146         view->presentation = FALSE;
4147         view->presentation_state = EV_PRESENTATION_NORMAL;
4148         view->fullscreen = FALSE;
4149         view->sizing_mode = EV_SIZING_FIT_WIDTH;
4150         view->pending_scroll = SCROLL_TO_KEEP_POSITION;
4151         view->jump_to_find_result = TRUE;
4152         view->highlight_find_results = FALSE;
4153
4154         gtk_layout_set_hadjustment (GTK_LAYOUT (view), NULL);
4155         gtk_layout_set_vadjustment (GTK_LAYOUT (view), NULL);
4156
4157         gtk_drag_dest_set (GTK_WIDGET (view),
4158                            GTK_DEST_DEFAULT_ALL,
4159                            view_drop_targets,
4160                            G_N_ELEMENTS (view_drop_targets),
4161                            GDK_ACTION_COPY);
4162 }
4163
4164 /*** Callbacks ***/
4165
4166 static void
4167 ev_view_change_page (EvView *view,
4168                      gint    new_page,
4169                      gboolean start_transition)
4170 {
4171         gint x, y;
4172
4173         view->current_page = new_page;
4174         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
4175
4176         if (view->presentation && start_transition)
4177                 ev_view_presentation_transition_start (view);
4178
4179         gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
4180         ev_view_handle_cursor_over_xy (view, x, y);
4181
4182         gtk_widget_queue_resize (GTK_WIDGET (view));
4183 }
4184
4185 static void
4186 ev_view_transition_animation_finish (EvTransitionAnimation *animation,
4187                                      EvView                *view)
4188 {
4189         g_object_unref (view->animation);
4190         view->animation = NULL;
4191         ev_view_change_page (view, view->current_page, TRUE);
4192 }
4193
4194 /**
4195  * ev_view_transition_animation_cancel:
4196  * @animation: Animation to finish
4197  * @view: An EvView
4198  *
4199  * Does almost the same as cancel, but without scheduling the transition.
4200  */
4201
4202 static void
4203 ev_view_transition_animation_cancel (EvTransitionAnimation *animation,
4204                                      EvView                *view)
4205 {
4206         g_object_unref (view->animation);
4207         view->animation = NULL;
4208         ev_view_change_page (view, view->current_page, FALSE);
4209 }
4210
4211 static void
4212 ev_view_transition_animation_frame (EvTransitionAnimation *animation,
4213                                     gdouble                progress,
4214                                     EvView                *view)
4215 {
4216         gtk_widget_queue_draw (GTK_WIDGET (view));
4217 }
4218
4219 static void
4220 ev_view_presentation_animation_start (EvView *view,
4221                                       int     new_page)
4222 {
4223         EvTransitionEffect *effect = NULL;
4224         cairo_surface_t *surface;
4225
4226         if (EV_IS_DOCUMENT_TRANSITION (view->document))
4227                 effect = ev_document_transition_get_effect (EV_DOCUMENT_TRANSITION (view->document),
4228                                                             view->current_page);
4229         if (!effect)
4230                 return;
4231
4232         surface = ev_pixbuf_cache_get_surface (view->pixbuf_cache, view->current_page);
4233         view->animation = ev_transition_animation_new (effect);
4234         ev_transition_animation_set_origin_surface (view->animation, surface);
4235
4236         g_signal_connect (view->animation, "frame",
4237                           G_CALLBACK (ev_view_transition_animation_frame), view);
4238         g_signal_connect (view->animation, "finished",
4239                           G_CALLBACK (ev_view_transition_animation_finish), view);
4240 }
4241
4242 static void
4243 job_finished_cb (EvPixbufCache *pixbuf_cache,
4244                  GdkRegion     *region,
4245                  EvView        *view)
4246 {
4247         if (view->animation) {
4248                 cairo_surface_t *surface;
4249
4250                 surface = ev_pixbuf_cache_get_surface (pixbuf_cache, view->current_page);
4251                 ev_transition_animation_set_dest_surface (view->animation, surface);
4252         }
4253
4254         if (region) {
4255                 gdk_window_invalidate_region (view->layout.bin_window,
4256                                               region, TRUE);
4257         } else {
4258                 gtk_widget_queue_draw (GTK_WIDGET (view));
4259         }
4260 }
4261
4262 static void
4263 page_changed_cb (EvPageCache *page_cache,
4264                  int          new_page,
4265                  EvView      *view)
4266 {
4267         if (view->current_page != new_page) {
4268                 if (view->presentation)
4269                         ev_view_presentation_animation_start (view, new_page);
4270
4271                 ev_view_change_page (view, new_page, TRUE);
4272         } else {
4273                 gtk_widget_queue_draw (GTK_WIDGET (view));
4274         }
4275
4276         view->find_result = 0;
4277 }
4278
4279 static void
4280 on_adjustment_value_changed (GtkAdjustment *adjustment,
4281                              EvView        *view)
4282 {
4283         int dx = 0, dy = 0;
4284         gint x, y;
4285         GList *children, *l;
4286
4287         if (! GTK_WIDGET_REALIZED (view))
4288                 return;
4289
4290         if (view->hadjustment) {
4291                 dx = view->scroll_x - (int) view->hadjustment->value;
4292                 view->scroll_x = (int) view->hadjustment->value;
4293         } else {
4294                 view->scroll_x = 0;
4295         }
4296
4297         if (view->vadjustment) {
4298                 dy = view->scroll_y - (int) view->vadjustment->value;
4299                 view->scroll_y = (int) view->vadjustment->value;
4300         } else {
4301                 view->scroll_y = 0;
4302         }
4303
4304         children = gtk_container_get_children (GTK_CONTAINER (view));
4305         for (l = children; l && l->data; l = g_list_next (l)) {
4306                 gint       child_x, child_y;
4307                 GtkWidget *child = (GtkWidget *)l->data;
4308
4309                 gtk_container_child_get (GTK_CONTAINER (view),
4310                                          child,
4311                                          "x", &child_x,
4312                                          "y", &child_y,
4313                                          NULL);
4314                 gtk_layout_move (GTK_LAYOUT (view), child, child_x + dx, child_y + dy);
4315         }
4316         g_list_free (children);
4317
4318         if (view->pending_resize)
4319                 gtk_widget_queue_draw (GTK_WIDGET (view));
4320         else
4321                 gdk_window_scroll (view->layout.bin_window, dx, dy);
4322
4323         gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
4324         ev_view_handle_cursor_over_xy (view, x, y);
4325
4326         if (view->document)
4327                 view_update_range_and_current_page (view);
4328 }
4329
4330 GtkWidget*
4331 ev_view_new (void)
4332 {
4333         GtkWidget *view;
4334
4335         view = g_object_new (EV_TYPE_VIEW, NULL);
4336
4337         return view;
4338 }
4339
4340 static void
4341 setup_caches (EvView *view)
4342 {
4343         view->page_cache = ev_page_cache_get (view->document);
4344         g_signal_connect (view->page_cache, "page-changed", G_CALLBACK (page_changed_cb), view);
4345         view->pixbuf_cache = ev_pixbuf_cache_new (GTK_WIDGET (view), view->document);
4346         g_signal_connect (view->pixbuf_cache, "job-finished", G_CALLBACK (job_finished_cb), view);
4347         page_changed_cb (view->page_cache,
4348                          ev_page_cache_get_current_page (view->page_cache),
4349                          view);
4350 }
4351
4352 static void
4353 clear_caches (EvView *view)
4354 {
4355         if (view->pixbuf_cache) {
4356                 g_object_unref (view->pixbuf_cache);
4357                 view->pixbuf_cache = NULL;
4358         }
4359
4360         if (view->page_cache) {
4361                 view->page_cache = NULL;
4362         }
4363 }
4364
4365 void
4366 ev_view_set_loading (EvView       *view,
4367                      gboolean      loading)
4368 {
4369         view->loading = loading;
4370         gtk_widget_queue_draw (GTK_WIDGET (view));
4371 }
4372
4373 static gboolean
4374 ev_view_autoscroll_cb (EvView *view)
4375 {
4376         gdouble speed, value;
4377
4378         /* If the user stops autoscrolling, autoscrolling will be
4379          * set to false but the timeout will continue; stop the timeout: */
4380         if (!view->scroll_info.autoscrolling) {
4381                 view->scroll_info.timeout_id = 0;
4382                 return FALSE;
4383         }
4384
4385         if (view->scroll_info.last_y > view->scroll_info.start_y &&
4386                 (view->scroll_info.last_y < view->scroll_info.start_y))
4387                 return TRUE;
4388
4389         /* Replace 100 with your speed of choice: The lower the faster.
4390          * Replace 3 with another speed of choice: The higher, the faster it accelerated
4391          *      based on the distance of the starting point from the mouse
4392          * (All also effected by the timeout interval of this callback) */
4393
4394         if (view->scroll_info.start_y > view->scroll_info.last_y)
4395                 speed = -pow ((((gdouble)view->scroll_info.start_y - view->scroll_info.last_y) / 100), 3);
4396         else
4397                 speed = pow ((((gdouble)view->scroll_info.last_y - view->scroll_info.start_y) / 100), 3);
4398
4399         value = gtk_adjustment_get_value (view->vadjustment);
4400         value = CLAMP (value + speed, 0, view->vadjustment->upper - view->vadjustment->page_size);
4401         gtk_adjustment_set_value (view->vadjustment, value);
4402
4403         return TRUE;
4404
4405 }
4406
4407 void
4408 ev_view_autoscroll_start (EvView *view)
4409 {
4410         gint x, y;
4411
4412         g_return_if_fail (EV_IS_VIEW (view));
4413
4414         if (view->scroll_info.autoscrolling)
4415                 return;
4416
4417         view->scroll_info.autoscrolling = TRUE;
4418         view->scroll_info.timeout_id =
4419                 g_timeout_add (20, (GSourceFunc)ev_view_autoscroll_cb,
4420                                view);
4421
4422         gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
4423         ev_view_handle_cursor_over_xy (view, x, y);
4424 }
4425
4426 void
4427 ev_view_autoscroll_stop (EvView *view)
4428 {
4429         gint x, y;
4430
4431         g_return_if_fail (EV_IS_VIEW (view));
4432
4433         if (!view->scroll_info.autoscrolling)
4434                 return;
4435
4436         view->scroll_info.autoscrolling = FALSE;
4437         if (view->scroll_info.timeout_id) {
4438                 g_source_remove (view->scroll_info.timeout_id);
4439                 view->scroll_info.timeout_id = 0;
4440         }
4441
4442         gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
4443         ev_view_handle_cursor_over_xy (view, x, y);
4444 }
4445
4446 void
4447 ev_view_set_document (EvView     *view,
4448                       EvDocument *document)
4449 {
4450         g_return_if_fail (EV_IS_VIEW (view));
4451
4452         view->loading = FALSE;
4453
4454         if (document != view->document) {
4455                 clear_caches (view);
4456
4457                 if (view->document) {
4458                         g_object_unref (view->document);
4459                         view->page_cache = NULL;
4460                 }
4461
4462                 view->document = document;
4463                 view->find_result = 0;
4464
4465                 if (view->document) {
4466                         g_object_ref (view->document);
4467                         setup_caches (view);
4468                 }
4469
4470                 gtk_widget_queue_resize (GTK_WIDGET (view));
4471         }
4472 }
4473
4474 /*** Zoom and sizing mode ***/
4475
4476 #define EPSILON 0.0000001
4477 void
4478 ev_view_set_zoom (EvView   *view,
4479                   double    factor,
4480                   gboolean  relative)
4481 {
4482         double scale;
4483
4484         if (relative)
4485                 scale = view->scale * factor;
4486         else
4487                 scale = factor;
4488
4489         scale = CLAMP (scale,
4490                        view->sizing_mode == EV_SIZING_FREE ? view->min_scale : 0,
4491                        view->max_scale);
4492
4493         if (ABS (view->scale - scale) < EPSILON)
4494                 return;
4495
4496         if (view->loading_text) {
4497                 cairo_surface_destroy (view->loading_text);
4498                 view->loading_text = NULL;
4499         }
4500
4501         view->scale = scale;
4502         view->pending_resize = TRUE;
4503
4504         gtk_widget_queue_resize (GTK_WIDGET (view));
4505
4506         g_object_notify (G_OBJECT (view), "zoom");
4507 }
4508
4509 double
4510 ev_view_get_zoom (EvView *view)
4511 {
4512         return view->scale;
4513 }
4514
4515 void
4516 ev_view_set_screen_dpi (EvView  *view,
4517                         gdouble  dpi)
4518 {
4519         g_return_if_fail (EV_IS_VIEW (view));
4520         g_return_if_fail (dpi > 0);
4521
4522         view->dpi = dpi;
4523         view->min_scale = MIN_SCALE * dpi / 72.0;
4524         view->max_scale = MAX_SCALE * dpi / 72.0;
4525 }
4526
4527 gboolean
4528 ev_view_get_continuous (EvView *view)
4529 {
4530         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
4531
4532         return view->continuous;
4533 }
4534
4535 void
4536 ev_view_set_continuous (EvView   *view,
4537                         gboolean  continuous)
4538 {
4539         g_return_if_fail (EV_IS_VIEW (view));
4540
4541         continuous = continuous != FALSE;
4542
4543         if (view->continuous != continuous) {
4544                 view->continuous = continuous;
4545                 view->pending_scroll = SCROLL_TO_PAGE_POSITION;
4546                 gtk_widget_queue_resize (GTK_WIDGET (view));
4547         }
4548
4549         g_object_notify (G_OBJECT (view), "continuous");
4550 }
4551
4552 gboolean
4553 ev_view_get_dual_page (EvView *view)
4554 {
4555         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
4556
4557         return view->dual_page;
4558 }
4559
4560 void
4561 ev_view_set_dual_page (EvView   *view,
4562                        gboolean  dual_page)
4563 {
4564         g_return_if_fail (EV_IS_VIEW (view));
4565
4566         dual_page = dual_page != FALSE;
4567
4568         if (view->dual_page == dual_page)
4569                 return;
4570
4571         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
4572         view->dual_page = dual_page;
4573         /* FIXME: if we're keeping the pixbuf cache around, we should extend the
4574          * preload_cache_size to be 2 if dual_page is set.
4575          */
4576         gtk_widget_queue_resize (GTK_WIDGET (view));
4577
4578         g_object_notify (G_OBJECT (view), "dual-page");
4579 }
4580
4581 void
4582 ev_view_set_fullscreen (EvView   *view,
4583                          gboolean  fullscreen)
4584 {
4585         g_return_if_fail (EV_IS_VIEW (view));
4586
4587         fullscreen = fullscreen != FALSE;
4588
4589         if (view->fullscreen == fullscreen)
4590                 return;
4591
4592         view->fullscreen = fullscreen;
4593         gtk_widget_queue_resize (GTK_WIDGET (view));
4594
4595         g_object_notify (G_OBJECT (view), "fullscreen");
4596 }
4597
4598 gboolean
4599 ev_view_get_fullscreen (EvView *view)
4600 {
4601         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
4602
4603         return view->fullscreen;
4604 }
4605
4606 void
4607 ev_view_set_presentation (EvView   *view,
4608                           gboolean  presentation)
4609 {
4610         g_return_if_fail (EV_IS_VIEW (view));
4611
4612         presentation = presentation != FALSE;
4613
4614         if (view->presentation == presentation)
4615                 return;
4616
4617         if (!presentation)
4618                 view->presentation_state = EV_PRESENTATION_NORMAL;
4619
4620         view->presentation = presentation;
4621         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
4622
4623         if (presentation) {
4624                 view->sizing_mode_saved = view->sizing_mode;
4625                 view->scale_saved = view->scale;
4626                 ev_view_set_sizing_mode (view, EV_SIZING_BEST_FIT);
4627         } else {
4628                 ev_view_set_sizing_mode (view, view->sizing_mode_saved);
4629                 ev_view_set_zoom (view, view->scale_saved, FALSE);
4630         }
4631
4632         gtk_widget_queue_resize (GTK_WIDGET (view));
4633
4634         if (presentation)
4635                 ev_view_presentation_transition_start (view);
4636         else {
4637                 ev_view_presentation_transition_stop (view);
4638
4639                 if (view->animation) {
4640                         /* stop any running animation */
4641                         ev_view_transition_animation_cancel (view->animation, view);
4642                 }
4643         }
4644
4645         if (GTK_WIDGET_REALIZED (view)) {
4646                 if (view->presentation)
4647                         gdk_window_set_background (view->layout.bin_window,
4648                                                    &GTK_WIDGET (view)->style->black);
4649                 else
4650                         gdk_window_set_background (view->layout.bin_window,
4651                                                    &GTK_WIDGET (view)->style->mid [GTK_STATE_NORMAL]);
4652         }
4653
4654         g_object_notify (G_OBJECT (view), "presentation");
4655 }
4656
4657 gboolean
4658 ev_view_get_presentation (EvView *view)
4659 {
4660         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
4661
4662         return view->presentation;
4663 }
4664
4665 static gboolean
4666 transition_next_page (EvView *view)
4667 {
4668         ev_view_next_page (view);
4669
4670         return FALSE;
4671 }
4672
4673 static void
4674 ev_view_presentation_transition_stop (EvView *view)
4675 {
4676         if (view->trans_timeout_id > 0)
4677                 g_source_remove (view->trans_timeout_id);
4678         view->trans_timeout_id = 0;
4679 }
4680
4681 static void
4682 ev_view_presentation_transition_start (EvView *view)
4683 {
4684         gdouble duration;
4685
4686         if (!EV_IS_DOCUMENT_TRANSITION (view->document))
4687                 return;
4688
4689         ev_view_presentation_transition_stop (view);
4690
4691         duration = ev_document_transition_get_page_duration (EV_DOCUMENT_TRANSITION (view->document),
4692                                                              view->current_page);
4693         if (duration > 0) {
4694                 view->trans_timeout_id =
4695                         g_timeout_add_seconds (duration,
4696                                                (GSourceFunc) transition_next_page,
4697                                                view);
4698         }
4699 }
4700
4701 void
4702 ev_view_set_sizing_mode (EvView       *view,
4703                          EvSizingMode  sizing_mode)
4704 {
4705         g_return_if_fail (EV_IS_VIEW (view));
4706
4707         if (view->sizing_mode == sizing_mode)
4708                 return;
4709
4710         view->sizing_mode = sizing_mode;
4711         gtk_widget_queue_resize (GTK_WIDGET (view));
4712
4713         g_object_notify (G_OBJECT (view), "sizing-mode");
4714 }
4715
4716 EvSizingMode
4717 ev_view_get_sizing_mode (EvView *view)
4718 {
4719         g_return_val_if_fail (EV_IS_VIEW (view), EV_SIZING_FREE);
4720
4721         return view->sizing_mode;
4722 }
4723
4724 gboolean
4725 ev_view_can_zoom_in (EvView *view)
4726 {
4727         return view->scale * ZOOM_IN_FACTOR <= view->max_scale;
4728 }
4729
4730 gboolean
4731 ev_view_can_zoom_out (EvView *view)
4732 {
4733         return view->scale * ZOOM_OUT_FACTOR >= view->min_scale;
4734 }
4735
4736 void
4737 ev_view_zoom_in (EvView *view)
4738 {
4739         g_return_if_fail (view->sizing_mode == EV_SIZING_FREE);
4740
4741         if (view->presentation)
4742                 return;
4743
4744         view->pending_scroll = SCROLL_TO_CENTER;
4745         ev_view_set_zoom (view, ZOOM_IN_FACTOR, TRUE);
4746 }
4747
4748 void
4749 ev_view_zoom_out (EvView *view)
4750 {
4751         g_return_if_fail (view->sizing_mode == EV_SIZING_FREE);
4752
4753         if (view->presentation)
4754                 return;
4755
4756         view->pending_scroll = SCROLL_TO_CENTER;
4757         ev_view_set_zoom (view, ZOOM_OUT_FACTOR, TRUE);
4758 }
4759
4760 void
4761 ev_view_rotate_right (EvView *view)
4762 {
4763         int rotation = view->rotation + 90;
4764
4765         if (rotation >= 360) {
4766                 rotation -= 360;
4767         }
4768
4769         ev_view_set_rotation (view, rotation);
4770 }
4771
4772 void
4773 ev_view_rotate_left (EvView *view)
4774 {
4775         int rotation = view->rotation - 90;
4776
4777         if (rotation < 0) {
4778                 rotation += 360;
4779         }
4780
4781         ev_view_set_rotation (view, rotation);
4782 }
4783
4784 void
4785 ev_view_set_rotation (EvView *view, int rotation)
4786 {
4787         view->rotation = rotation;
4788
4789         if (view->pixbuf_cache) {
4790                 ev_pixbuf_cache_clear (view->pixbuf_cache);
4791                 gtk_widget_queue_resize (GTK_WIDGET (view));
4792         }
4793
4794         if (rotation != 0)
4795                 clear_selection (view);
4796
4797         g_object_notify (G_OBJECT (view), "rotation");
4798 }
4799
4800 int
4801 ev_view_get_rotation (EvView *view)
4802 {
4803         return view->rotation;
4804 }
4805
4806 static double
4807 zoom_for_size_fit_width (int doc_width,
4808                          int doc_height,
4809                          int target_width,
4810                          int target_height,
4811                          int vsb_width)
4812 {
4813         double scale;
4814
4815         scale = (double)target_width / doc_width;
4816
4817         if (doc_height * scale > target_height)
4818                 scale = (double) (target_width - vsb_width) / doc_width;
4819
4820         return scale;
4821 }
4822
4823 static double
4824 zoom_for_size_fit_height (int doc_width,
4825                           int doc_height,
4826                           int target_width,
4827                           int target_height,
4828                           int vsb_height)
4829 {
4830         double scale;
4831
4832         scale = (double)target_height / doc_height;
4833
4834         if (doc_width * scale > target_width)
4835                 scale = (double) (target_height - vsb_height) / doc_height;
4836
4837         return scale;
4838 }
4839
4840 static double
4841 zoom_for_size_best_fit (int doc_width,
4842                         int doc_height,
4843                         int target_width,
4844                         int target_height,
4845                         int vsb_width,
4846                         int hsb_width)
4847 {
4848         double w_scale;
4849         double h_scale;
4850
4851         w_scale = (double)target_width / doc_width;
4852         h_scale = (double)target_height / doc_height;
4853
4854         if (doc_height * w_scale > target_height)
4855                 w_scale = (double) (target_width - vsb_width) / doc_width;
4856         if (doc_width * h_scale > target_width)
4857                 h_scale = (double) (target_height - hsb_width) / doc_height;
4858
4859         return MIN (w_scale, h_scale);
4860 }
4861
4862
4863 static void
4864 ev_view_zoom_for_size_presentation (EvView *view,
4865                                     int     width,
4866                                     int     height)
4867 {
4868         int doc_width, doc_height;
4869         gdouble scale;
4870
4871         ev_page_cache_get_size (view->page_cache,
4872                                 view->current_page,
4873                                 view->rotation,
4874                                 1.0,
4875                                 &doc_width,
4876                                 &doc_height);
4877         scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, 0, 0);
4878         ev_view_set_zoom (view, scale, FALSE);
4879 }
4880
4881 static void
4882 ev_view_zoom_for_size_continuous_and_dual_page (EvView *view,
4883                            int     width,
4884                            int     height,
4885                            int     vsb_width,
4886                            int     hsb_height)
4887 {
4888         int doc_width, doc_height;
4889         GtkBorder border;
4890         gdouble scale;
4891
4892         ev_page_cache_get_max_width (view->page_cache,
4893                                      view->rotation,
4894                                      1.0,
4895                                      &doc_width);
4896         ev_page_cache_get_max_height (view->page_cache,
4897                                       view->rotation,
4898                                       1.0,
4899                                       &doc_height);
4900         compute_border (view, doc_width, doc_height, &border);
4901
4902         doc_width = doc_width * 2;
4903         width -= (2 * (border.left + border.right) + 3 * view->spacing);
4904         height -= (border.top + border.bottom + 2 * view->spacing - 1);
4905
4906         /* FIXME: We really need to calculate the overall height here, not the
4907          * page height.  We assume there's always a vertical scrollbar for
4908          * now.  We need to fix this. */
4909         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
4910                 scale = zoom_for_size_fit_width (doc_width, doc_height, width - vsb_width, height, 0);
4911         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
4912                 scale = zoom_for_size_best_fit (doc_width, doc_height, width - vsb_width, height, 0, hsb_height);
4913         else
4914                 g_assert_not_reached ();
4915
4916         ev_view_set_zoom (view, scale, FALSE);
4917 }
4918
4919 static void
4920 ev_view_zoom_for_size_continuous (EvView *view,
4921                                   int     width,
4922                                   int     height,
4923                                   int     vsb_width,
4924                                   int     hsb_height)
4925 {
4926         int doc_width, doc_height;
4927         GtkBorder border;
4928         gdouble scale;
4929
4930         ev_page_cache_get_max_width (view->page_cache,
4931                                      view->rotation,
4932                                      1.0,
4933                                      &doc_width);
4934         ev_page_cache_get_max_height (view->page_cache,
4935                                       view->rotation,
4936                                       1.0,
4937                                       &doc_height);
4938         compute_border (view, doc_width, doc_height, &border);
4939
4940         width -= (border.left + border.right + 2 * view->spacing);
4941         height -= (border.top + border.bottom + 2 * view->spacing - 1);
4942
4943         /* FIXME: We really need to calculate the overall height here, not the
4944          * page height.  We assume there's always a vertical scrollbar for
4945          * now.  We need to fix this. */
4946         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
4947                 scale = zoom_for_size_fit_width (doc_width, doc_height, width - vsb_width, height, 0);
4948         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
4949                 scale = zoom_for_size_best_fit (doc_width, doc_height, width - vsb_width, height, 0, hsb_height);
4950         else
4951                 g_assert_not_reached ();
4952
4953         ev_view_set_zoom (view, scale, FALSE);
4954 }
4955
4956 static void
4957 ev_view_zoom_for_size_dual_page (EvView *view,
4958                                  int     width,
4959                                  int     height,
4960                                  int     vsb_width,
4961                                  int     hsb_height)
4962 {
4963         GtkBorder border;
4964         gint doc_width, doc_height;
4965         gdouble scale;
4966         gint other_page;
4967
4968         other_page = view->current_page ^ 1;
4969
4970         /* Find the largest of the two. */
4971         ev_page_cache_get_size (view->page_cache,
4972                                 view->current_page,
4973                                 view->rotation,
4974                                 1.0,
4975                                 &doc_width, &doc_height);
4976
4977         if (other_page < ev_page_cache_get_n_pages (view->page_cache)) {
4978                 gint width_2, height_2;
4979                 ev_page_cache_get_size (view->page_cache,
4980                                         other_page,
4981                                         view->rotation,
4982                                         1.0,
4983                                         &width_2, &height_2);
4984                 if (width_2 > doc_width)
4985                         doc_width = width_2;
4986                 if (height_2 > doc_height)
4987                         doc_height = height_2;
4988         }
4989         compute_border (view, doc_width, doc_height, &border);
4990
4991         doc_width = doc_width * 2;
4992         width -= ((border.left + border.right)* 2 + 3 * view->spacing);
4993         height -= (border.top + border.bottom + 2 * view->spacing);
4994
4995         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
4996                 scale = zoom_for_size_fit_width (doc_width, doc_height, width, height, vsb_width);
4997         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
4998                 scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, vsb_width, hsb_height);
4999         else
5000                 g_assert_not_reached ();
5001
5002         ev_view_set_zoom (view, scale, FALSE);
5003 }
5004
5005 static void
5006 ev_view_zoom_for_size_single_page (EvView *view,
5007                                    int     width,
5008                                    int     height,
5009                                    int     vsb_width,
5010                                    int     hsb_height)
5011 {
5012         int doc_width, doc_height;
5013         GtkBorder border;
5014         gdouble scale;
5015
5016         ev_page_cache_get_size (view->page_cache,
5017                                 view->current_page,
5018                                 view->rotation,
5019                                 1.0,
5020                                 &doc_width,
5021                                 &doc_height);
5022         /* Get an approximate border */
5023         compute_border (view, width, height, &border);
5024
5025         width -= (border.left + border.right + 2 * view->spacing);
5026         height -= (border.top + border.bottom + 2 * view->spacing);
5027
5028         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
5029                 scale = zoom_for_size_fit_width (doc_width, doc_height, width, height, vsb_width);
5030         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
5031                 scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, vsb_width, hsb_height);
5032         else
5033                 g_assert_not_reached ();
5034
5035         ev_view_set_zoom (view, scale, FALSE);
5036 }
5037
5038 static void
5039 ev_view_set_zoom_for_size (EvView *view,
5040                            int     width,
5041                            int     height,
5042                            int     vsb_width,
5043                            int     hsb_height)
5044 {
5045         g_return_if_fail (EV_IS_VIEW (view));
5046         g_return_if_fail (view->sizing_mode == EV_SIZING_FIT_WIDTH ||
5047                           view->sizing_mode == EV_SIZING_BEST_FIT);
5048         g_return_if_fail (width >= 0);
5049         g_return_if_fail (height >= 0);
5050
5051         if (view->document == NULL)
5052                 return;
5053
5054         if (view->presentation)
5055                 ev_view_zoom_for_size_presentation (view, width, height);
5056         else if (view->continuous && view->dual_page)
5057                 ev_view_zoom_for_size_continuous_and_dual_page (view, width, height, vsb_width, hsb_height);
5058         else if (view->continuous)
5059                 ev_view_zoom_for_size_continuous (view, width, height, vsb_width, hsb_height);
5060         else if (view->dual_page)
5061                 ev_view_zoom_for_size_dual_page (view, width, height, vsb_width, hsb_height);
5062         else
5063                 ev_view_zoom_for_size_single_page (view, width, height, vsb_width, hsb_height);
5064 }
5065
5066 /*** Find ***/
5067 static gint
5068 ev_view_find_get_n_results (EvView *view, gint page)
5069 {
5070         return view->find_pages ? g_list_length (view->find_pages[page]) : 0;
5071 }
5072
5073 static EvRectangle *
5074 ev_view_find_get_result (EvView *view, gint page, gint result)
5075 {
5076         return view->find_pages ? (EvRectangle *) g_list_nth_data (view->find_pages[page], result) : NULL;
5077 }
5078
5079 static void
5080 jump_to_find_result (EvView *view)
5081 {
5082         gint n_results;
5083         gint page = view->current_page;
5084
5085         n_results = ev_view_find_get_n_results (view, page);
5086
5087         if (n_results > 0 && view->find_result < n_results) {
5088                 EvRectangle *rect;
5089                 GdkRectangle view_rect;
5090
5091                 rect = ev_view_find_get_result (view, page, view->find_result);
5092                 doc_rect_to_view_rect (view, page, rect, &view_rect);
5093                 ensure_rectangle_is_visible (view, &view_rect);
5094         }
5095 }
5096
5097 /**
5098  * jump_to_find_page
5099  * @view: #EvView instance
5100  * @direction: Direction to look
5101  * @shift: Shift from current page
5102  *
5103  * Jumps to the first page that has occurences of searched word.
5104  * Uses a direction where to look and a shift from current page.
5105  *
5106  */
5107 static void
5108 jump_to_find_page (EvView *view, EvViewFindDirection direction, gint shift)
5109 {
5110         int n_pages, i;
5111
5112         n_pages = ev_page_cache_get_n_pages (view->page_cache);
5113
5114         for (i = 0; i < n_pages; i++) {
5115                 int page;
5116
5117                 if (direction == EV_VIEW_FIND_NEXT)
5118                         page = view->current_page + i;
5119                 else
5120                         page = view->current_page - i;
5121                 page += shift;
5122
5123                 if (page >= n_pages) {
5124                         page = page - n_pages;
5125                 } else if (page < 0)
5126                         page = page + n_pages;
5127
5128                 if (ev_view_find_get_n_results (view, page) > 0) {
5129                         ev_page_cache_set_current_page (view->page_cache, page);
5130                         break;
5131                 }
5132         }
5133 }
5134
5135 void
5136 ev_view_find_changed (EvView *view, GList **results, gint page)
5137 {
5138         view->find_pages = results;
5139
5140         if (view->jump_to_find_result == TRUE) {
5141                 jump_to_find_page (view, EV_VIEW_FIND_NEXT, 0);
5142                 jump_to_find_result (view);
5143         }
5144
5145         if (view->current_page == page)
5146                 gtk_widget_queue_draw (GTK_WIDGET (view));
5147 }
5148
5149 void
5150 ev_view_find_next (EvView *view)
5151 {
5152         gint n_results;
5153
5154         n_results = ev_view_find_get_n_results (view, view->current_page);
5155         view->find_result++;
5156
5157         if (view->find_result >= n_results) {
5158                 view->find_result = 0;
5159                 jump_to_find_page (view, EV_VIEW_FIND_NEXT, 1);
5160                 jump_to_find_result (view);
5161         } else {
5162                 jump_to_find_result (view);
5163                 gtk_widget_queue_draw (GTK_WIDGET (view));
5164         }
5165 }
5166
5167 void
5168 ev_view_find_previous (EvView *view)
5169 {
5170         view->find_result--;
5171
5172         if (view->find_result < 0) {
5173                 jump_to_find_page (view, EV_VIEW_FIND_PREV, -1);
5174                 view->find_result = ev_view_find_get_n_results (view, view->current_page) - 1;
5175                 jump_to_find_result (view);
5176         } else {
5177                 jump_to_find_result (view);
5178                 gtk_widget_queue_draw (GTK_WIDGET (view));
5179         }
5180 }
5181
5182 void
5183 ev_view_find_search_changed (EvView *view)
5184 {
5185         /* search string has changed, focus on new search result */
5186         view->jump_to_find_result = TRUE;
5187         view->find_pages = NULL;
5188 }
5189
5190 void
5191 ev_view_find_set_highlight_search (EvView *view, gboolean value)
5192 {
5193         view->highlight_find_results = value;
5194         gtk_widget_queue_draw (GTK_WIDGET (view));
5195 }
5196
5197 void
5198 ev_view_find_cancel (EvView *view)
5199 {
5200         view->find_pages = NULL;
5201 }
5202
5203 /*** Selections ***/
5204
5205 /* compute_new_selection_rect/text calculates the area currently selected by
5206  * view_rect.  each handles a different mode;
5207  */
5208 static GList *
5209 compute_new_selection_rect (EvView       *view,
5210                             GdkPoint     *start,
5211                             GdkPoint     *stop)
5212 {
5213         GdkRectangle view_rect;
5214         int n_pages, i;
5215         GList *list = NULL;
5216
5217         g_assert (view->selection_mode == EV_VIEW_SELECTION_RECTANGLE);
5218
5219         view_rect.x = MIN (start->x, stop->x);
5220         view_rect.y = MIN (start->y, stop->y);
5221         view_rect.width = MAX (start->x, stop->x) - view_rect.x;
5222         view_rect.width = MAX (start->y, stop->y) - view_rect.y;
5223
5224         n_pages = ev_page_cache_get_n_pages (view->page_cache);
5225
5226         for (i = 0; i < n_pages; i++) {
5227                 GdkRectangle page_area;
5228                 GtkBorder border;
5229
5230                 if (get_page_extents (view, i, &page_area, &border)) {
5231                         GdkRectangle overlap;
5232
5233                         if (gdk_rectangle_intersect (&page_area, &view_rect, &overlap)) {
5234                                 EvViewSelection *selection;
5235
5236                                 selection = g_new0 (EvViewSelection, 1);
5237                                 selection->page = i;
5238                                 view_rect_to_doc_rect (view, &overlap, &page_area,
5239                                                        &(selection->rect));
5240
5241                                 list = g_list_append (list, selection);
5242                         }
5243                 }
5244         }
5245
5246         return list;
5247 }
5248
5249 static gboolean
5250 gdk_rectangle_point_in (GdkRectangle *rectangle,
5251                         GdkPoint     *point)
5252 {
5253         return rectangle->x <= point->x &&
5254                 rectangle->y <= point->y &&
5255                 point->x < rectangle->x + rectangle->width &&
5256                 point->y < rectangle->y + rectangle->height;
5257 }
5258
5259 static GList *
5260 compute_new_selection_text (EvView          *view,
5261                             EvSelectionStyle style,
5262                             GdkPoint        *start,
5263                             GdkPoint        *stop)
5264 {
5265         int n_pages, i, first, last;
5266         GList *list = NULL;
5267         EvViewSelection *selection;
5268         gint width, height;
5269         int start_page, end_page;
5270
5271         g_assert (view->selection_mode == EV_VIEW_SELECTION_TEXT);
5272
5273         n_pages = ev_page_cache_get_n_pages (view->page_cache);
5274
5275         /* First figure out the range of pages the selection
5276          * affects. */
5277         first = n_pages;
5278         last = 0;
5279         if (view->continuous) {
5280                 start_page = 0;
5281                 end_page = n_pages;
5282         } else if (view->dual_page) {
5283                 start_page = view->start_page;
5284                 end_page = view->end_page + 1;
5285         } else {
5286                 start_page = view->current_page;
5287                 end_page = view->current_page + 1;
5288         }
5289
5290         for (i = start_page; i < end_page; i++) {
5291                 GdkRectangle page_area;
5292                 GtkBorder border;
5293
5294                 get_page_extents (view, i, &page_area, &border);
5295                 if (gdk_rectangle_point_in (&page_area, start) ||
5296                     gdk_rectangle_point_in (&page_area, stop)) {
5297                         if (first == n_pages)
5298                                 first = i;
5299                         last = i;
5300                 }
5301
5302         }
5303
5304         /* Now create a list of EvViewSelection's for the affected
5305          * pages.  This could be an empty list, a list of just one
5306          * page or a number of pages.*/
5307         for (i = first; i < last + 1; i++) {
5308                 GdkRectangle page_area;
5309                 GtkBorder border;
5310                 GdkPoint *point;
5311
5312                 ev_page_cache_get_size (view->page_cache, i,
5313                                         view->rotation,
5314                                         1.0, &width, &height);
5315
5316                 selection = g_new0 (EvViewSelection, 1);
5317                 selection->page = i;
5318                 selection->style = style;
5319                 selection->rect.x1 = selection->rect.y1 = 0;
5320                 selection->rect.x2 = width;
5321                 selection->rect.y2 = height;
5322
5323                 get_page_extents (view, i, &page_area, &border);
5324
5325                 if (gdk_rectangle_point_in (&page_area, start))
5326                         point = start;
5327                 else
5328                         point = stop;
5329
5330                 if (i == first)
5331                         view_point_to_doc_point (view, point, &page_area,
5332                                                  &selection->rect.x1,
5333                                                  &selection->rect.y1);
5334
5335                 /* If the selection is contained within just one page,
5336                  * make sure we don't write 'start' into both points
5337                  * in selection->rect. */
5338                 if (first == last)
5339                         point = stop;
5340
5341                 if (i == last)
5342                         view_point_to_doc_point (view, point, &page_area,
5343                                                  &selection->rect.x2,
5344                                                  &selection->rect.y2);
5345
5346                 list = g_list_append (list, selection);
5347         }
5348
5349         return list;
5350 }
5351
5352 /* This function takes the newly calculated list, and figures out which regions
5353  * have changed.  It then queues a redraw approporiately.
5354  */
5355 static void
5356 merge_selection_region (EvView *view,
5357                         GList  *new_list)
5358 {
5359         GList *old_list;
5360         GList *new_list_ptr, *old_list_ptr;
5361
5362         /* Update the selection */
5363         old_list = ev_pixbuf_cache_get_selection_list (view->pixbuf_cache);
5364         g_list_foreach (view->selection_info.selections, (GFunc)selection_free, NULL);
5365         g_list_free (view->selection_info.selections);
5366         view->selection_info.selections = new_list;
5367         ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, new_list);
5368         g_object_notify (G_OBJECT (view), "has-selection");
5369
5370         new_list_ptr = new_list;
5371         old_list_ptr = old_list;
5372
5373         while (new_list_ptr || old_list_ptr) {
5374                 EvViewSelection *old_sel, *new_sel;
5375                 int cur_page;
5376                 GdkRegion *region = NULL;
5377
5378                 new_sel = (new_list_ptr) ? (new_list_ptr->data) : NULL;
5379                 old_sel = (old_list_ptr) ? (old_list_ptr->data) : NULL;
5380
5381                 /* Assume that the lists are in order, and we run through them
5382                  * comparing them, one page at a time.  We come out with the
5383                  * first page we see. */
5384                 if (new_sel && old_sel) {
5385                         if (new_sel->page < old_sel->page) {
5386                                 new_list_ptr = new_list_ptr->next;
5387                                 old_sel = NULL;
5388                         } else if (new_sel->page > old_sel->page) {
5389                                 old_list_ptr = old_list_ptr->next;
5390                                 new_sel = NULL;
5391                         } else {
5392                                 new_list_ptr = new_list_ptr->next;
5393                                 old_list_ptr = old_list_ptr->next;
5394                         }
5395                 } else if (new_sel) {
5396                         new_list_ptr = new_list_ptr->next;
5397                 } else if (old_sel) {
5398                         old_list_ptr = old_list_ptr->next;
5399                 }
5400
5401                 g_assert (new_sel || old_sel);
5402
5403                 /* is the page we're looking at on the screen?*/
5404                 cur_page = new_sel ? new_sel->page : old_sel->page;
5405                 if (cur_page < view->start_page || cur_page > view->end_page)
5406                         continue;
5407
5408                 /* seed the cache with a new page.  We are going to need the new
5409                  * region too. */
5410                 if (new_sel) {
5411                         GdkRegion *tmp_region = NULL;
5412
5413                         ev_pixbuf_cache_get_selection_surface (view->pixbuf_cache,
5414                                                                cur_page,
5415                                                                view->scale,
5416                                                                &tmp_region);
5417
5418                         if (tmp_region) {
5419                                 new_sel->covered_region = gdk_region_copy (tmp_region);
5420                         }
5421                 }
5422
5423                 /* Now we figure out what needs redrawing */
5424                 if (old_sel && new_sel) {
5425                         if (old_sel->covered_region && new_sel->covered_region) {
5426                                 /* We only want to redraw the areas that have
5427                                  * changed, so we xor the old and new regions
5428                                  * and redraw if it's different */
5429                                 region = gdk_region_copy (old_sel->covered_region);
5430                                 gdk_region_xor (region, new_sel->covered_region);
5431                                 if (gdk_region_empty (region)) {
5432                                         gdk_region_destroy (region);
5433                                         region = NULL;
5434                                 }
5435                         } else if (old_sel->covered_region) {
5436                                 region = gdk_region_copy (old_sel->covered_region);
5437                         } else if (new_sel->covered_region) {
5438                                 region = gdk_region_copy (new_sel->covered_region);
5439                         }
5440                 } else if (old_sel && !new_sel) {
5441                         if (old_sel->covered_region && !gdk_region_empty (old_sel->covered_region)) {
5442                                 region = gdk_region_copy (old_sel->covered_region);
5443                         }
5444                 } else if (!old_sel && new_sel) {
5445                         if (new_sel->covered_region && !gdk_region_empty (new_sel->covered_region)) {
5446                                 region = gdk_region_copy (new_sel->covered_region);
5447                         }
5448                 } else {
5449                         g_assert_not_reached ();
5450                 }
5451
5452                 /* Redraw the damaged region! */
5453                 if (region) {
5454                         GdkRectangle page_area;
5455                         GtkBorder border;
5456
5457                         /* I don't know why but the region is smaller
5458                          * than expected. This hack fixes it, I guess
5459                          * 10 pixels more won't hurt
5460                          */
5461                         gdk_region_shrink (region, -5, -5);
5462
5463                         get_page_extents (view, cur_page, &page_area, &border);
5464                         gdk_region_offset (region,
5465                                            page_area.x + border.left - view->scroll_x,
5466                                            page_area.y + border.top - view->scroll_y);
5467                         gdk_window_invalidate_region (view->layout.bin_window, region, TRUE);
5468                         gdk_region_destroy (region);
5469                 }
5470         }
5471
5472         /* Free the old list, now that we're done with it. */
5473         g_list_foreach (old_list, (GFunc) selection_free, NULL);
5474         g_list_free (old_list);
5475 }
5476
5477 static void
5478 compute_selections (EvView          *view,
5479                     EvSelectionStyle style,
5480                     GdkPoint        *start,
5481                     GdkPoint        *stop)
5482 {
5483         GList *list;
5484
5485         if (view->selection_mode == EV_VIEW_SELECTION_RECTANGLE)
5486                 list = compute_new_selection_rect (view, start, stop);
5487         else
5488                 list = compute_new_selection_text (view, style, start, stop);
5489         merge_selection_region (view, list);
5490 }
5491
5492 /* Free's the selection.  It's up to the caller to queue redraws if needed.
5493  */
5494 static void
5495 selection_free (EvViewSelection *selection)
5496 {
5497         if (selection->covered_region)
5498                 gdk_region_destroy (selection->covered_region);
5499         g_free (selection);
5500 }
5501
5502 static void
5503 clear_selection (EvView *view)
5504 {
5505         g_list_foreach (view->selection_info.selections, (GFunc)selection_free, NULL);
5506         g_list_free (view->selection_info.selections);
5507         view->selection_info.selections = NULL;
5508         view->selection_info.in_selection = FALSE;
5509         if (view->pixbuf_cache)
5510                 ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, NULL);
5511         g_object_notify (G_OBJECT (view), "has-selection");
5512 }
5513
5514 void
5515 ev_view_select_all (EvView *view)
5516 {
5517         GList *selections = NULL;
5518         int n_pages, i;
5519
5520         /* Disable selection on rotated pages for the 0.4.0 series */
5521         if (view->rotation != 0)
5522                 return;
5523
5524         clear_selection (view);
5525
5526         n_pages = ev_page_cache_get_n_pages (view->page_cache);
5527         for (i = 0; i < n_pages; i++) {
5528                 int width, height;
5529                 EvViewSelection *selection;
5530
5531                 ev_page_cache_get_size (view->page_cache,
5532                                         i,
5533                                         view->rotation,
5534                                         1.0, &width, &height);
5535
5536                 selection = g_new0 (EvViewSelection, 1);
5537                 selection->page = i;
5538                 selection->style = EV_SELECTION_STYLE_GLYPH;
5539                 selection->rect.x1 = selection->rect.y1 = 0;
5540                 selection->rect.x2 = width;
5541                 selection->rect.y2 = height;
5542
5543                 selections = g_list_append (selections, selection);
5544         }
5545
5546         merge_selection_region (view, selections);
5547         gtk_widget_queue_draw (GTK_WIDGET (view));
5548 }
5549
5550 gboolean
5551 ev_view_get_has_selection (EvView *view)
5552 {
5553         return view->selection_info.selections != NULL;
5554 }
5555
5556 static char *
5557 get_selected_text (EvView *view)
5558 {
5559         GString *text;
5560         GList *l;
5561         gchar *normalized_text;
5562         EvRenderContext *rc;
5563
5564         text = g_string_new (NULL);
5565         rc = ev_render_context_new (NULL, view->rotation, view->scale);
5566
5567         ev_document_doc_mutex_lock ();
5568
5569         for (l = view->selection_info.selections; l != NULL; l = l->next) {
5570                 EvViewSelection *selection = (EvViewSelection *)l->data;
5571                 EvPage *page;
5572                 gchar *tmp;
5573
5574                 page = ev_document_get_page (view->document, selection->page);
5575                 ev_render_context_set_page (rc, page);
5576                 g_object_unref (page);
5577
5578                 tmp = ev_selection_get_selected_text (EV_SELECTION (view->document),
5579                                                       rc, selection->style,
5580                                                       &(selection->rect));
5581
5582                 g_string_append (text, tmp);
5583                 g_free (tmp);
5584         }
5585
5586         g_object_unref (rc);
5587
5588         ev_document_doc_mutex_unlock ();
5589
5590         normalized_text = g_utf8_normalize (text->str, text->len, G_NORMALIZE_NFKC);
5591         g_string_free (text, TRUE);
5592         return normalized_text;
5593 }
5594
5595 static void
5596 ev_view_clipboard_copy (EvView      *view,
5597                         const gchar *text)
5598 {
5599         GtkClipboard *clipboard;
5600
5601         clipboard = gtk_widget_get_clipboard (GTK_WIDGET (view),
5602                                               GDK_SELECTION_CLIPBOARD);
5603         gtk_clipboard_set_text (clipboard, text, -1);
5604 }
5605
5606 void
5607 ev_view_copy (EvView *ev_view)
5608 {
5609         char *text;
5610
5611         if (!EV_IS_SELECTION (ev_view->document))
5612                 return;
5613
5614         text = get_selected_text (ev_view);
5615         ev_view_clipboard_copy (ev_view, text);
5616         g_free (text);
5617 }
5618
5619 static void
5620 ev_view_primary_get_cb (GtkClipboard     *clipboard,
5621                         GtkSelectionData *selection_data,
5622                         guint             info,
5623                         gpointer          data)
5624 {
5625         EvView *ev_view = EV_VIEW (data);
5626
5627         if (ev_view->link_selected) {
5628                 gtk_selection_data_set_text (selection_data,
5629                                              ev_link_action_get_uri (ev_view->link_selected),
5630                                              -1);
5631         } else if (EV_IS_SELECTION (ev_view->document) &&
5632                    ev_view->selection_info.selections) {
5633                 gchar *text;
5634
5635                 text = get_selected_text (ev_view);
5636                 if (text) {
5637                         gtk_selection_data_set_text (selection_data, text, -1);
5638                         g_free (text);
5639                 }
5640         }
5641 }
5642
5643 static void
5644 ev_view_primary_clear_cb (GtkClipboard *clipboard,
5645                           gpointer      data)
5646 {
5647         EvView *view = EV_VIEW (data);
5648
5649         clear_selection (view);
5650         clear_link_selected (view);
5651 }
5652
5653 static void
5654 ev_view_update_primary_selection (EvView *ev_view)
5655 {
5656         GtkClipboard *clipboard;
5657
5658         clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view),
5659                                               GDK_SELECTION_PRIMARY);
5660
5661         if (ev_view->selection_info.selections || ev_view->link_selected) {
5662                 if (!gtk_clipboard_set_with_owner (clipboard,
5663                                                    clipboard_targets,
5664                                                    G_N_ELEMENTS (clipboard_targets),
5665                                                    ev_view_primary_get_cb,
5666                                                    ev_view_primary_clear_cb,
5667                                                    G_OBJECT (ev_view)))
5668                         ev_view_primary_clear_cb (clipboard, ev_view);
5669         } else {
5670                 if (gtk_clipboard_get_owner (clipboard) == G_OBJECT (ev_view))
5671                         gtk_clipboard_clear (clipboard);
5672         }
5673 }
5674
5675 static void
5676 clear_link_selected (EvView *view)
5677 {
5678         if (view->link_selected) {
5679                 g_object_unref (view->link_selected);
5680                 view->link_selected = NULL;
5681         }
5682 }
5683
5684 void
5685 ev_view_copy_link_address (EvView       *view,
5686                            EvLinkAction *action)
5687 {
5688         clear_link_selected (view);
5689
5690         ev_view_clipboard_copy (view, ev_link_action_get_uri (action));
5691
5692         view->link_selected = g_object_ref (action);
5693         ev_view_update_primary_selection (view);
5694 }
5695
5696 /*** Cursor operations ***/
5697
5698 static GdkCursor *
5699 ev_view_create_invisible_cursor(void)
5700 {
5701        GdkBitmap *empty;
5702        GdkColor black = { 0, 0, 0, 0 };
5703        static char bits[] = { 0x00 };
5704
5705        empty = gdk_bitmap_create_from_data (NULL, bits, 1, 1);
5706
5707        return gdk_cursor_new_from_pixmap (empty, empty, &black, &black, 0, 0);
5708 }
5709
5710 static void
5711 ev_view_set_cursor (EvView *view, EvViewCursor new_cursor)
5712 {
5713         GdkCursor *cursor = NULL;
5714         GdkDisplay *display;
5715         GtkWidget *widget;
5716
5717         if (view->cursor == new_cursor) {
5718                 return;
5719         }
5720
5721         widget = gtk_widget_get_toplevel (GTK_WIDGET (view));
5722         display = gtk_widget_get_display (widget);
5723         view->cursor = new_cursor;
5724
5725         switch (new_cursor) {
5726                 case EV_VIEW_CURSOR_NORMAL:
5727                         gdk_window_set_cursor (view->layout.bin_window, NULL);
5728                         break;
5729                 case EV_VIEW_CURSOR_IBEAM:
5730                         cursor = gdk_cursor_new_for_display (display, GDK_XTERM);
5731                         break;
5732                 case EV_VIEW_CURSOR_LINK:
5733                         cursor = gdk_cursor_new_for_display (display, GDK_HAND2);
5734                         break;
5735                 case EV_VIEW_CURSOR_WAIT:
5736                         cursor = gdk_cursor_new_for_display (display, GDK_WATCH);
5737                         break;
5738                 case EV_VIEW_CURSOR_HIDDEN:
5739                         cursor = ev_view_create_invisible_cursor ();
5740                         break;
5741                 case EV_VIEW_CURSOR_DRAG:
5742                         cursor = gdk_cursor_new_for_display (display, GDK_FLEUR);
5743                         break;
5744                 case EV_VIEW_CURSOR_AUTOSCROLL:
5745                         cursor = gdk_cursor_new_for_display (display, GDK_DOUBLE_ARROW);
5746                         break;
5747         }
5748
5749         if (cursor) {
5750                 gdk_window_set_cursor (view->layout.bin_window, cursor);
5751                 gdk_cursor_unref (cursor);
5752                 gdk_flush();
5753         }
5754 }
5755
5756 void
5757 ev_view_hide_cursor (EvView *view)
5758 {
5759        ev_view_set_cursor (view, EV_VIEW_CURSOR_HIDDEN);
5760 }
5761
5762 void
5763 ev_view_show_cursor (EvView *view)
5764 {
5765        ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
5766 }
5767
5768 static void
5769 ev_view_reset_presentation_state (EvView *view)
5770 {
5771         if (!view->presentation ||
5772             view->presentation_state == EV_PRESENTATION_NORMAL)
5773                 return;
5774
5775         view->presentation_state = EV_PRESENTATION_NORMAL;
5776         gdk_window_set_background (view->layout.bin_window,
5777                                    &GTK_WIDGET (view)->style->black);
5778         gtk_widget_queue_draw (GTK_WIDGET (view));
5779 }
5780
5781 gboolean
5782 ev_view_next_page (EvView *view)
5783 {
5784         int page, n_pages;
5785
5786         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
5787
5788         if (!view->page_cache)
5789                 return FALSE;
5790
5791         if (view->presentation &&
5792             (view->presentation_state == EV_PRESENTATION_BLACK ||
5793              view->presentation_state == EV_PRESENTATION_WHITE)) {
5794                 ev_view_reset_presentation_state (view);
5795                 return FALSE;
5796         }
5797
5798         if (view->animation) {
5799                 ev_view_transition_animation_cancel (view->animation, view);
5800         }
5801
5802         ev_view_presentation_transition_stop (view);
5803         ev_view_reset_presentation_state (view);
5804
5805         page = ev_page_cache_get_current_page (view->page_cache);
5806         n_pages = ev_page_cache_get_n_pages (view->page_cache);
5807
5808         if (view->dual_page && !view->presentation)
5809                 page = page + 2;
5810         else
5811                 page = page + 1;
5812
5813         if (page < n_pages) {
5814                 ev_page_cache_set_current_page (view->page_cache, page);
5815                 return TRUE;
5816         } else if (view->presentation && page == n_pages) {
5817                 view->presentation_state = EV_PRESENTATION_END;
5818                 gtk_widget_queue_draw (GTK_WIDGET (view));
5819                 return TRUE;
5820         } else if (view->dual_page && page == n_pages) {
5821                 ev_page_cache_set_current_page (view->page_cache, page - 1);
5822                 return TRUE;
5823         } else {
5824                 return FALSE;
5825         }
5826 }
5827
5828 gboolean
5829 ev_view_previous_page (EvView *view)
5830 {
5831         int page;
5832
5833         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
5834
5835         if (!view->page_cache)
5836                 return FALSE;
5837
5838         if (view->presentation &&
5839             view->presentation_state == EV_PRESENTATION_END) {
5840                 ev_view_reset_presentation_state (view);
5841                 return TRUE;
5842         }
5843
5844         if (view->presentation &&
5845             (view->presentation_state == EV_PRESENTATION_BLACK ||
5846              view->presentation_state == EV_PRESENTATION_WHITE)) {
5847                 ev_view_reset_presentation_state (view);
5848                 return FALSE;
5849         }
5850
5851         if (view->animation) {
5852                 ev_view_transition_animation_cancel (view->animation, view);
5853         }
5854
5855         ev_view_reset_presentation_state (view);
5856
5857         page = ev_page_cache_get_current_page (view->page_cache);
5858
5859         if (view->dual_page && !view->presentation)
5860                 page = page - 2;
5861         else
5862                 page = page - 1;
5863
5864         if (page >= 0) {
5865                 ev_page_cache_set_current_page (view->page_cache, page);
5866                 return TRUE;
5867         } else if (ev_view_get_dual_page (view) && page == -1) {
5868                 ev_page_cache_set_current_page (view->page_cache, 0);
5869                 return TRUE;
5870         } else {
5871                 return FALSE;
5872         }
5873 }
5874
5875 /*** Enum description for usage in signal ***/
5876
5877 GType
5878 ev_sizing_mode_get_type (void)
5879 {
5880   static GType etype = 0;
5881   if (etype == 0) {
5882     static const GEnumValue values[] = {
5883       { EV_SIZING_FIT_WIDTH, "EV_SIZING_FIT_WIDTH", "fit-width" },
5884       { EV_SIZING_BEST_FIT, "EV_SIZING_BEST_FIT", "best-fit" },
5885       { EV_SIZING_FREE, "EV_SIZING_FREE", "free" },
5886       { 0, NULL, NULL }
5887     };
5888     etype = g_enum_register_static ("EvSizingMode", values);
5889   }
5890   return etype;
5891 }
5892
5893 void
5894 ev_view_update_view_size (EvView *view, GtkScrolledWindow * scrolled_window)
5895 {
5896         int width, height;
5897         GtkRequisition vsb_requisition;
5898         GtkRequisition hsb_requisition;
5899         int scrollbar_spacing;
5900
5901         /* Calculate the width available for the content */
5902         width  = GTK_WIDGET (scrolled_window)->allocation.width;
5903         height = GTK_WIDGET (scrolled_window)->allocation.height;
5904
5905         if (gtk_scrolled_window_get_shadow_type (scrolled_window) == GTK_SHADOW_IN
5906             && view) {
5907                 width -=  2 * GTK_WIDGET(view)->style->xthickness;
5908                 height -= 2 * GTK_WIDGET(view)->style->ythickness;
5909         }
5910
5911         gtk_widget_size_request (scrolled_window->vscrollbar, &vsb_requisition);
5912         gtk_widget_size_request (scrolled_window->hscrollbar, &hsb_requisition);
5913         gtk_widget_style_get (GTK_WIDGET (scrolled_window),
5914                               "scrollbar_spacing",
5915                               &scrollbar_spacing,
5916                               NULL);
5917
5918         if (EV_IS_VIEW(view)) {
5919                 ev_view_set_zoom_for_size (EV_VIEW (view),
5920                                            MAX (1, width),
5921                                            MAX (1, height),
5922                                            vsb_requisition.width + scrollbar_spacing,
5923                                            hsb_requisition.height + scrollbar_spacing);
5924         }
5925 }