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-find.h"
  33 #include "ev-document-forms.h"
  34 #include "ev-document-images.h"
  35 #include "ev-document-links.h"
  36 #include "ev-document-misc.h"
  37 #include "ev-document-transition.h"
  38 #include "ev-marshal.h"
  39 #include "ev-page-cache.h"
  40 #include "ev-pixbuf-cache.h"
  41 #include "ev-transition-animation.h"
  42 #include "ev-utils.h"
  43 #include "ev-view.h"
  44 #include "ev-view-private.h"
  45
  46 #if !GTK_CHECK_VERSION (2, 11, 7)
  47 #include "ev-tooltip.h"
  48 #endif
  49
  50 #define EV_VIEW_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass), EV_TYPE_VIEW, EvViewClass))
  51 #define EV_IS_VIEW_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), EV_TYPE_VIEW))
  52 #define EV_VIEW_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj), EV_TYPE_VIEW, EvViewClass))
  53
  54 enum {
  55         PROP_0,
  56         PROP_FIND_STATUS,
  57         PROP_CONTINUOUS,
  58         PROP_DUAL_PAGE,
  59         PROP_FULLSCREEN,
  60         PROP_PRESENTATION,
  61         PROP_SIZING_MODE,
  62         PROP_ZOOM,
  63         PROP_ROTATION,
  64         PROP_HAS_SELECTION,
  65 };
  66
  67 enum {
  68         SIGNAL_BINDING_ACTIVATED,
  69         SIGNAL_ZOOM_INVALID,
  70         SIGNAL_HANDLE_LINK,
  71         SIGNAL_EXTERNAL_LINK,
  72         SIGNAL_POPUP_MENU,
  73         N_SIGNALS,
  74 };
  75
  76 enum {
  77         TARGET_DND_URI,
  78         TARGET_DND_TEXT,
  79         TARGET_DND_IMAGE
  80 };
  81
  82 enum {
  83         TARGET_STRING,
  84         TARGET_TEXT,
  85         TARGET_COMPOUND_TEXT,
  86         TARGET_UTF8_STRING,
  87         TARGET_TEXT_BUFFER_CONTENTS
  88 };
  89
  90 static const GtkTargetEntry clipboard_targets[] = {
  91         { "STRING", 0, TARGET_STRING },
  92         { "TEXT",   0, TARGET_TEXT },
  93         { "COMPOUND_TEXT", 0, TARGET_COMPOUND_TEXT },
  94         { "UTF8_STRING", 0, TARGET_UTF8_STRING },
  95 };
  96
  97 static const GtkTargetEntry view_drop_targets[] = {
  98         { "text/uri-list", 0, 0 }
  99 };
 100
 101 static guint signals[N_SIGNALS];
 102
 103 typedef enum {
 104         EV_VIEW_FIND_NEXT,
 105         EV_VIEW_FIND_PREV
 106 } EvViewFindDirection;
 107
 108 #define ZOOM_IN_FACTOR  1.2
 109 #define ZOOM_OUT_FACTOR (1.0/ZOOM_IN_FACTOR)
 110
 111 #define MIN_SCALE 0.05409
 112 #define MAX_SCALE 4.0
 113
 114 #define SCROLL_TIME 150
 115
 116 /*** Scrolling ***/
 117 static void       scroll_to_current_page                     (EvView *view,
 118                                                               GtkOrientation orientation);
 119 static void       ev_view_set_scroll_adjustments             (GtkLayout          *layout,
 120                                                               GtkAdjustment      *hadjustment,
 121                                                               GtkAdjustment      *vadjustment);
 122 static void       view_update_range_and_current_page         (EvView             *view);
 123 static void       set_scroll_adjustment                      (EvView             *view,
 124                                                               GtkOrientation      orientation,
 125                                                               GtkAdjustment      *adjustment);
 126 static void       add_scroll_binding_keypad                  (GtkBindingSet      *binding_set,
 127                                                               guint               keyval,
 128                                                               GdkModifierType modifiers,
 129                                                               EvScrollType       scroll,
 130                                                               gboolean            horizontal);
 131 static void       ensure_rectangle_is_visible                (EvView             *view,
 132                                                               GdkRectangle       *rect);
 133
 134 /*** Geometry computations ***/
 135 static void       compute_border                             (EvView             *view,
 136                                                               int                 width,
 137                                                               int                 height,
 138                                                               GtkBorder          *border);
 139 static void       get_page_y_offset                          (EvView *view,
 140                                                               int page,
 141                                                               double zoom,
 142                                                               int *y_offset);
 143 static gboolean   get_page_extents                           (EvView             *view,
 144                                                               gint                page,
 145                                                               GdkRectangle       *page_area,
 146                                                               GtkBorder          *border);
 147 static void       view_rect_to_doc_rect                      (EvView             *view,
 148                                                               GdkRectangle       *view_rect,
 149                                                               GdkRectangle       *page_area,
 150                                                               EvRectangle        *doc_rect);
 151 static void       doc_rect_to_view_rect                      (EvView             *view,
 152                                                               int                 page,
 153                                                               EvRectangle        *doc_rect,
 154                                                               GdkRectangle       *view_rect);
 155 static void       find_page_at_location                      (EvView             *view,
 156                                                               gdouble             x,
 157                                                               gdouble             y,
 158                                                               gint               *page,
 159                                                               gint               *x_offset,
 160                                                               gint               *y_offset);
 161 static gboolean  doc_point_to_view_point                     (EvView             *view,
 162                                                               int                 page,
 163                                                               EvPoint            *doc_point,
 164                                                               GdkPoint           *view_point);
 165 /*** Hyperrefs ***/
 166 static EvLink *   ev_view_get_link_at_location               (EvView             *view,
 167                                                               gdouble             x,
 168                                                               gdouble             y);
 169 static char*      tip_from_link                              (EvView             *view,
 170                                                               EvLink             *link);
 171 /*** Forms ***/
 172 static EvFormField *ev_view_get_form_field_at_location       (EvView             *view,
 173                                                                gdouble            x,
 174                                                                gdouble            y);
 175
 176 /*** GtkWidget implementation ***/
 177 static void       ev_view_size_request_continuous_dual_page  (EvView             *view,
 178                                                               GtkRequisition     *requisition);
 179 static void       ev_view_size_request_continuous            (EvView             *view,
 180                                                               GtkRequisition     *requisition);
 181 static void       ev_view_size_request_dual_page             (EvView             *view,
 182                                                               GtkRequisition     *requisition);
 183 static void       ev_view_size_request_single_page           (EvView             *view,
 184                                                               GtkRequisition     *requisition);
 185 static void       ev_view_size_request                       (GtkWidget          *widget,
 186                                                               GtkRequisition     *requisition);
 187 static void       ev_view_size_allocate                      (GtkWidget          *widget,
 188                                                               GtkAllocation      *allocation);
 189 static void       ev_view_realize                            (GtkWidget          *widget);
 190 static gboolean   ev_view_scroll_event                       (GtkWidget          *widget,
 191                                                               GdkEventScroll     *event);
 192 static gboolean   ev_view_expose_event                       (GtkWidget          *widget,
 193                                                               GdkEventExpose     *event);
 194 static gboolean   ev_view_popup_menu                         (GtkWidget          *widget);
 195 static gboolean   ev_view_button_press_event                 (GtkWidget          *widget,
 196                                                               GdkEventButton     *event);
 197 static gboolean   ev_view_motion_notify_event                (GtkWidget          *widget,
 198                                                               GdkEventMotion     *event);
 199 static gboolean   ev_view_button_release_event               (GtkWidget          *widget,
 200                                                               GdkEventButton     *event);
 201 static gboolean   ev_view_enter_notify_event                 (GtkWidget          *widget,
 202                                                               GdkEventCrossing   *event);
 203 static gboolean   ev_view_leave_notify_event                 (GtkWidget          *widget,
 204                                                               GdkEventCrossing   *event);
 205 static void       ev_view_style_set                          (GtkWidget          *widget,
 206                                                               GtkStyle           *old_style);
 207 static void       ev_view_remove_all                         (EvView             *view);
 208
 209 static AtkObject *ev_view_get_accessible                     (GtkWidget *widget);
 210
 211 /*** Drawing ***/
 212 static guint32    ev_gdk_color_to_rgb                        (const GdkColor     *color);
 213 static void       draw_rubberband                            (GtkWidget          *widget,
 214                                                               GdkWindow          *window,
 215                                                               const GdkRectangle *rect,
 216                                                               guchar              alpha);
 217 static void       highlight_find_results                     (EvView             *view,
 218                                                               int                 page);
 219 static void       draw_one_page                              (EvView             *view,
 220                                                               gint                page,
 221                                                               cairo_t            *cr,
 222                                                               GdkRectangle       *page_area,
 223                                                               GtkBorder          *border,
 224                                                               GdkRectangle       *expose_area,
 225                                                               gboolean           *page_ready);
 226 static void       draw_loading_text                          (EvView             *view,
 227                                                               GdkRectangle       *page_area,
 228                                                               GdkRectangle       *expose_area);
 229
 230 /*** Callbacks ***/
 231 static void       find_changed_cb                            (EvDocument         *document,
 232                                                               int                 page,
 233                                                               EvView             *view);
 234 static void       job_finished_cb                            (EvPixbufCache      *pixbuf_cache,
 235                                                               GdkRegion          *region,
 236                                                               EvView             *view);
 237 static void       page_changed_cb                            (EvPageCache        *page_cache,
 238                                                               int                 new_page,
 239                                                               EvView             *view);
 240 static void       on_adjustment_value_changed                (GtkAdjustment      *adjustment,
 241                                                               EvView             *view);
 242
 243 /*** GObject ***/
 244 static void       ev_view_finalize                           (GObject            *object);
 245 static void       ev_view_destroy                            (GtkObject          *object);
 246 static void       ev_view_set_property                       (GObject            *object,
 247                                                               guint               prop_id,
 248                                                               const GValue       *value,
 249                                                               GParamSpec         *pspec);
 250 static void       ev_view_get_property                       (GObject            *object,
 251                                                               guint               prop_id,
 252                                                               GValue             *value,
 253                                                               GParamSpec         *pspec);
 254 static void       ev_view_class_init                         (EvViewClass        *class);
 255 static void       ev_view_init                               (EvView             *view);
 256
 257 /*** Zoom and sizing ***/
 258 static double   zoom_for_size_fit_width                      (int doc_width,
 259                                                               int doc_height,
 260                                                               int target_width,
 261                                                               int target_height,
 262                                                               int vsb_width);
 263 static double   zoom_for_size_fit_height                     (int doc_width,
 264                                                               int doc_height,
 265                                                               int target_width,
 266                                                               int target_height,
 267                                                               int vsb_height);
 268 static double   zoom_for_size_best_fit                       (int doc_width,
 269                                                               int doc_height,
 270                                                               int target_width,
 271                                                               int target_height,
 272                                                               int vsb_width,
 273                                                               int hsb_width);
 274 static void     ev_view_zoom_for_size_presentation           (EvView *view,
 275                                                               int     width,
 276                                                               int     height);
 277 static void     ev_view_zoom_for_size_continuous_and_dual_page (EvView *view,
 278                                                                 int     width,
 279                                                                 int     height,
 280                                                                 int     vsb_width,
 281                                                                 int     hsb_height);
 282 static void     ev_view_zoom_for_size_continuous               (EvView *view,
 283                                                                 int     width,
 284                                                                 int     height,
 285                                                                 int     vsb_width,
 286                                                                 int     hsb_height);
 287 static void     ev_view_zoom_for_size_dual_page                (EvView *view,
 288                                                                 int     width,
 289                                                                 int     height,
 290                                                                 int     vsb_width,
 291                                                                 int     hsb_height);
 292 static void     ev_view_zoom_for_size_single_page              (EvView *view,
 293                                                                 int     width,
 294                                                                 int     height,
 295                                                                 int     vsb_width,
 296                                                                 int     hsb_height);
 297 /*** Cursors ***/
 298 static GdkCursor* ev_view_create_invisible_cursor            (void);
 299 static void       ev_view_set_cursor                         (EvView             *view,
 300                                                               EvViewCursor        new_cursor);
 301 static void       ev_view_handle_cursor_over_xy              (EvView *view,
 302                                                               gint x,
 303                                                               gint y);
 304
 305 /*** Find ***/
 306 static void       update_find_status_message                 (EvView             *view,
 307                                                               gboolean            this_page);
 308 static void       ev_view_set_find_status                    (EvView             *view,
 309                                                               const char         *message);
 310 static void       jump_to_find_result                        (EvView             *view);
 311 static void       jump_to_find_page                          (EvView             *view,
 312                                                               EvViewFindDirection direction,
 313                                                               gint                shift);
 314
 315 /*** Selection ***/
 316 static void       compute_selections                         (EvView             *view,
 317                                                               EvSelectionStyle    style,
 318                                                               GdkPoint           *start,
 319                                                               GdkPoint           *stop);
 320 static void       clear_selection                            (EvView             *view);
 321 static void       clear_link_selected                        (EvView             *view);
 322 static void       selection_free                             (EvViewSelection    *selection);
 323 static char*      get_selected_text                          (EvView             *ev_view);
 324 static void       ev_view_primary_get_cb                     (GtkClipboard       *clipboard,
 325                                                               GtkSelectionData   *selection_data,
 326                                                               guint               info,
 327                                                               gpointer            data);
 328 static void       ev_view_primary_clear_cb                   (GtkClipboard       *clipboard,
 329                                                               gpointer            data);
 330 static void       ev_view_update_primary_selection           (EvView             *ev_view);
 331
 332 /*** Presentation ***/
 333 static void       ev_view_presentation_transition_start      (EvView             *ev_view);
 334 static void       ev_view_presentation_transition_stop       (EvView             *ev_view);
 335
 336
 337 G_DEFINE_TYPE (EvView, ev_view, GTK_TYPE_LAYOUT)
 338
 339 static void
 340 scroll_to_current_page (EvView *view, GtkOrientation orientation)
 341 {
 342         GdkPoint view_point;
 343
 344         if (view->document == NULL) {
 345                 return;
 346         }
 347
 348         doc_point_to_view_point (view, view->current_page, &view->pending_point, &view_point);
 349
 350         if (orientation == GTK_ORIENTATION_VERTICAL) {
 351                 view->pending_point.y = 0;
 352         } else {
 353                 view->pending_point.x = 0;
 354         }
 355
 356         if (orientation == GTK_ORIENTATION_VERTICAL) {
 357                 if (view->continuous) {
 358                         gtk_adjustment_clamp_page (view->vadjustment,
 359                                                    view_point.y - view->spacing / 2,
 360                                                    view_point.y + view->vadjustment->page_size);
 361                 } else {
 362                         gtk_adjustment_set_value (view->vadjustment,
 363                                                   CLAMP (view_point.y,
 364                                                   view->vadjustment->lower,
 365                                                   view->vadjustment->upper -
 366                                                   view->vadjustment->page_size));
 367                 }
 368         } else {
 369                 if (view->dual_page) {
 370                         gtk_adjustment_clamp_page (view->hadjustment,
 371                                                    view_point.x,
 372                                                    view_point.x + view->hadjustment->page_size);
 373                 } else {
 374                         gtk_adjustment_set_value (view->hadjustment,
 375                                                   CLAMP (view_point.x,
 376                                                   view->hadjustment->lower,
 377                                                   view->hadjustment->upper -
 378                                                   view->hadjustment->page_size));
 379                 }
 380         }
 381 }
 382
 383 static void
 384 view_set_adjustment_values (EvView         *view,
 385                             GtkOrientation  orientation)
 386 {
 387         GtkWidget *widget = GTK_WIDGET (view);
 388         GtkAdjustment *adjustment;
 389         int requisition;
 390         int allocation;
 391
 392         double factor;
 393         gint new_value;
 394
 395         if (orientation == GTK_ORIENTATION_HORIZONTAL)  {
 396                 requisition = widget->requisition.width;
 397                 allocation = widget->allocation.width;
 398                 adjustment = view->hadjustment;
 399         } else {
 400                 requisition = widget->requisition.height;
 401                 allocation = widget->allocation.height;
 402                 adjustment = view->vadjustment;
 403         }
 404
 405         if (!adjustment)
 406                 return;
 407
 408         factor = 1.0;
 409         switch (view->pending_scroll) {
 410                 case SCROLL_TO_KEEP_POSITION:
 411                 case SCROLL_TO_FIND_LOCATION:
 412                         factor = (adjustment->value) / adjustment->upper;
 413                         break;
 414                 case SCROLL_TO_PAGE_POSITION:
 415                         break;
 416                 case SCROLL_TO_CENTER:
 417                         factor = (adjustment->value + adjustment->page_size * 0.5) / adjustment->upper;
 418                         break;
 419         }
 420
 421         adjustment->page_size = allocation;
 422         adjustment->step_increment = allocation * 0.1;
 423         adjustment->page_increment = allocation * 0.9;
 424         adjustment->lower = 0;
 425         adjustment->upper = MAX (allocation, requisition);
 426
 427         /*
 428          * We add 0.5 to the values before to average out our rounding errors.
 429          */
 430         switch (view->pending_scroll) {
 431                 case SCROLL_TO_KEEP_POSITION:
 432                 case SCROLL_TO_FIND_LOCATION:
 433                         new_value = CLAMP (adjustment->upper * factor + 0.5, 0, adjustment->upper - adjustment->page_size);
 434                         gtk_adjustment_set_value (adjustment, (int)new_value);
 435                         break;
 436                 case SCROLL_TO_PAGE_POSITION:
 437                         scroll_to_current_page (view, orientation);
 438                         break;
 439                 case SCROLL_TO_CENTER:
 440                         new_value = CLAMP (adjustment->upper * factor - adjustment->page_size * 0.5 + 0.5,
 441                                            0, adjustment->upper - adjustment->page_size);
 442                         gtk_adjustment_set_value (adjustment, (int)new_value);
 443                         break;
 444         }
 445
 446         gtk_adjustment_changed (adjustment);
 447 }
 448
 449 static void
 450 view_update_range_and_current_page (EvView *view)
 451 {
 452         gint current_page;
 453         gint best_current_page = -1;
 454
 455         /* Presentation trumps all other modes */
 456         if (view->presentation) {
 457                 view->start_page = view->current_page;
 458                 view->end_page = view->current_page;
 459         } else if (view->continuous) {
 460                 GdkRectangle current_area, unused, page_area;
 461                 GtkBorder border;
 462                 gboolean found = FALSE;
 463                 gint area_max = -1, area;
 464                 int i;
 465
 466                 if (!(view->vadjustment && view->hadjustment))
 467                         return;
 468
 469                 current_area.x = view->hadjustment->value;
 470                 current_area.width = view->hadjustment->upper;
 471                 current_area.y = view->vadjustment->value;
 472                 current_area.height = view->vadjustment->page_size;
 473
 474                 for (i = 0; i < ev_page_cache_get_n_pages (view->page_cache); i++) {
 475
 476                         get_page_extents (view, i, &page_area, &border);
 477
 478                         if (gdk_rectangle_intersect (&current_area, &page_area, &unused)) {
 479                                 area = unused.width * unused.height;
 480
 481                                 if (!found) {
 482                                         area_max = area;
 483                                         view->start_page = i;
 484                                         found = TRUE;
 485                                         best_current_page = i;
 486                                 }
 487                                 if (area > area_max) {
 488                                         best_current_page = (area == area_max) ? MIN (i, best_current_page) : i;
 489                                         area_max = area;
 490                                 }
 491
 492                                 view->end_page = i;
 493                         } else if (found && view->current_page <= view->end_page) {
 494                                 break;
 495                         }
 496                 }
 497
 498         } else if (view->dual_page) {
 499                 if (view->current_page % 2 == ev_page_cache_get_dual_even_left (view->page_cache)) {
 500                         view->start_page = view->current_page;
 501                         if (view->current_page + 1 < ev_page_cache_get_n_pages (view->page_cache))
 502                                 view->end_page = view->start_page + 1;
 503                         else
 504                                 view->end_page = view->start_page;
 505                 } else {
 506                         if (view->current_page < 1)
 507                                 view->start_page = view->current_page;
 508                         else
 509                                 view->start_page = view->current_page - 1;
 510                         view->end_page = view->current_page;
 511                 }
 512         } else {
 513                 view->start_page = view->current_page;
 514                 view->end_page = view->current_page;
 515         }
 516
 517         best_current_page = MAX (best_current_page, view->start_page);
 518         current_page = ev_page_cache_get_current_page (view->page_cache);
 519
 520         if ((current_page != best_current_page) && (view->pending_scroll == SCROLL_TO_KEEP_POSITION)) {
 521                 view->current_page = best_current_page;
 522                 ev_page_cache_set_current_page (view->page_cache, best_current_page);
 523         }
 524
 525         ev_pixbuf_cache_set_page_range (view->pixbuf_cache,
 526                                         view->start_page,
 527                                         view->end_page,
 528                                         view->rotation,
 529                                         view->scale,
 530                                         view->selection_info.selections);
 531 }
 532
 533 static void
 534 set_scroll_adjustment (EvView *view,
 535                        GtkOrientation  orientation,
 536                        GtkAdjustment  *adjustment)
 537 {
 538         GtkAdjustment **to_set;
 539
 540         if (orientation == GTK_ORIENTATION_HORIZONTAL)
 541                 to_set = &view->hadjustment;
 542         else
 543                 to_set = &view->vadjustment;
 544
 545         if (*to_set != adjustment) {
 546                 if (*to_set) {
 547                         g_signal_handlers_disconnect_by_func (*to_set,
 548                                                               (gpointer) on_adjustment_value_changed,
 549                                                               view);
 550                         g_object_unref (*to_set);
 551                 }
 552
 553                 *to_set = adjustment;
 554                 view_set_adjustment_values (view, orientation);
 555
 556                 if (*to_set) {
 557                         g_object_ref (*to_set);
 558                         g_signal_connect (*to_set, "value_changed",
 559                                           G_CALLBACK (on_adjustment_value_changed), view);
 560                 }
 561         }
 562 }
 563
 564 static void
 565 ev_view_set_scroll_adjustments (GtkLayout      *layout,
 566                                 GtkAdjustment  *hadjustment,
 567                                 GtkAdjustment  *vadjustment)
 568 {
 569         EvView *view = EV_VIEW (layout);
 570
 571         set_scroll_adjustment (view, GTK_ORIENTATION_HORIZONTAL, hadjustment);
 572         set_scroll_adjustment (view, GTK_ORIENTATION_VERTICAL, vadjustment);
 573
 574         on_adjustment_value_changed (NULL, view);
 575 }
 576
 577 static void
 578 add_scroll_binding_keypad (GtkBindingSet  *binding_set,
 579                            guint           keyval,
 580                            GdkModifierType modifiers,
 581                            EvScrollType    scroll,
 582                            gboolean        horizontal)
 583 {
 584   guint keypad_keyval = keyval - GDK_Left + GDK_KP_Left;
 585
 586   gtk_binding_entry_add_signal (binding_set, keyval, modifiers,
 587                                 "binding_activated", 2,
 588                                 EV_TYPE_SCROLL_TYPE, scroll,
 589                                 G_TYPE_BOOLEAN, horizontal);
 590   gtk_binding_entry_add_signal (binding_set, keypad_keyval, modifiers,
 591                                 "binding_activated", 2,
 592                                 EV_TYPE_SCROLL_TYPE, scroll,
 593                                 G_TYPE_BOOLEAN, horizontal);
 594 }
 595
 596 void
 597 ev_view_scroll (EvView        *view,
 598                 EvScrollType   scroll,
 599                 gboolean horizontal)
 600 {
 601         GtkAdjustment *adjustment;
 602         double value, increment;
 603         gboolean first_page = FALSE;
 604         gboolean last_page = FALSE;
 605
 606         view->jump_to_find_result = FALSE;
 607
 608         if (view->presentation || view->sizing_mode == EV_SIZING_BEST_FIT) {
 609                 switch (scroll) {
 610                         case EV_SCROLL_PAGE_BACKWARD:
 611                         case EV_SCROLL_STEP_BACKWARD:
 612                                 ev_view_previous_page (view);
 613                                 break;
 614                         case EV_SCROLL_PAGE_FORWARD:
 615                         case EV_SCROLL_STEP_FORWARD:
 616                                 ev_view_next_page (view);
 617                                 break;
 618                         default:
 619                                 break;
 620                 }
 621                 return;
 622         }
 623
 624         /* Assign values for increment and vertical adjustment */
 625         adjustment = horizontal ? view->hadjustment : view->vadjustment;
 626         increment = adjustment->page_size * 0.75;
 627         value = adjustment->value;
 628
 629         /* Assign boolean for first and last page */
 630         if (view->current_page == 0)
 631                 first_page = TRUE;
 632         if (view->current_page == ev_page_cache_get_n_pages (view->page_cache) - 1)
 633                 last_page = TRUE;
 634
 635         switch (scroll) {
 636                 case EV_SCROLL_PAGE_BACKWARD:
 637                         /* Do not jump backwards if at the first page */
 638                         if (value == (adjustment->lower) && first_page) {
 639                                 /* Do nothing */
 640                                 /* At the top of a page, assign the upper bound limit of previous page */
 641                         } else if (value == (adjustment->lower)) {
 642                                 value = adjustment->upper - adjustment->page_size;
 643                                 ev_view_previous_page (view);
 644                                 /* Jump to the top */
 645                         } else {
 646                                 value = MAX (value - increment, adjustment->lower);
 647                         }
 648                         break;
 649                 case EV_SCROLL_PAGE_FORWARD:
 650                         /* Do not jump forward if at the last page */
 651                         if (value == (adjustment->upper - adjustment->page_size) && last_page) {
 652                                 /* Do nothing */
 653                         /* At the bottom of a page, assign the lower bound limit of next page */
 654                         } else if (value == (adjustment->upper - adjustment->page_size)) {
 655                                 value = 0;
 656                                 ev_view_next_page (view);
 657                         /* Jump to the bottom */
 658                         } else {
 659                                 value = MIN (value + increment, adjustment->upper - adjustment->page_size);
 660                         }
 661                         break;
 662                 case EV_SCROLL_STEP_BACKWARD:
 663                         value -= adjustment->step_increment;
 664                         break;
 665                 case EV_SCROLL_STEP_FORWARD:
 666                         value += adjustment->step_increment;
 667                         break;
 668                 case EV_SCROLL_STEP_DOWN:
 669                         value -= adjustment->step_increment / 10;
 670                         break;
 671                 case EV_SCROLL_STEP_UP:
 672                         value += adjustment->step_increment / 10;
 673                         break;
 674                 default:
 675                         break;
 676         }
 677
 678         value = CLAMP (value, adjustment->lower,
 679                        adjustment->upper - adjustment->page_size);
 680
 681         gtk_adjustment_set_value (adjustment, value);
 682 }
 683
 684 #define MARGIN 5
 685
 686 static void
 687 ensure_rectangle_is_visible (EvView *view, GdkRectangle *rect)
 688 {
 689         GtkWidget *widget = GTK_WIDGET (view);
 690         GtkAdjustment *adjustment;
 691         int value;
 692
 693         view->pending_scroll = SCROLL_TO_FIND_LOCATION;
 694
 695         adjustment = view->vadjustment;
 696
 697         if (rect->y < adjustment->value) {
 698                 value = MAX (adjustment->lower, rect->y - MARGIN);
 699                 gtk_adjustment_set_value (view->vadjustment, value);
 700         } else if (rect->y + rect->height >
 701                    adjustment->value + widget->allocation.height) {
 702                 value = MIN (adjustment->upper, rect->y + rect->height -
 703                              widget->allocation.height + MARGIN);
 704                 gtk_adjustment_set_value (view->vadjustment, value);
 705         }
 706
 707         adjustment = view->hadjustment;
 708
 709         if (rect->x < adjustment->value) {
 710                 value = MAX (adjustment->lower, rect->x - MARGIN);
 711                 gtk_adjustment_set_value (view->hadjustment, value);
 712         } else if (rect->x + rect->height >
 713                    adjustment->value + widget->allocation.width) {
 714                 value = MIN (adjustment->upper, rect->x + rect->width -
 715                              widget->allocation.width + MARGIN);
 716                 gtk_adjustment_set_value (view->hadjustment, value);
 717         }
 718
 719         gtk_widget_queue_resize (GTK_WIDGET (view));
 720 }
 721
 722 /*** Geometry computations ***/
 723
 724 static void
 725 compute_border (EvView *view, int width, int height, GtkBorder *border)
 726 {
 727         if (view->presentation) {
 728                 border->left = 0;
 729                 border->right = 0;
 730                 border->top = 0;
 731                 border->bottom = 0;
 732         } else {
 733                 ev_document_misc_get_page_border_size (width, height, border);
 734         }
 735 }
 736
 737 static void
 738 get_page_y_offset (EvView *view, int page, double zoom, int *y_offset)
 739 {
 740         int max_width, offset;
 741         GtkBorder border;
 742
 743         g_return_if_fail (y_offset != NULL);
 744
 745         ev_page_cache_get_max_width (view->page_cache, view->rotation, zoom, &max_width);
 746
 747         compute_border (view, max_width, max_width, &border);
 748
 749         if (view->dual_page) {
 750                 ev_page_cache_get_height_to_page (view->page_cache, page,
 751                                                   view->rotation, zoom, NULL, &offset);
 752                 offset += ((page + ev_page_cache_get_dual_even_left (view->page_cache)) / 2 + 1) * view->spacing + ((page + ev_page_cache_get_dual_even_left (view->page_cache)) / 2 ) * (border.top + border.bottom);
 753         } else {
 754                 ev_page_cache_get_height_to_page (view->page_cache, page,
 755                                                   view->rotation, zoom, &offset, NULL);
 756                 offset += (page + 1) * view->spacing + page * (border.top + border.bottom);
 757         }
 758
 759         *y_offset = offset;
 760         return;
 761 }
 762
 763 static gboolean
 764 get_page_extents (EvView       *view,
 765                   gint          page,
 766                   GdkRectangle *page_area,
 767                   GtkBorder    *border)
 768 {
 769         GtkWidget *widget;
 770         int width, height;
 771
 772         widget = GTK_WIDGET (view);
 773
 774         /* Get the size of the page */
 775         ev_page_cache_get_size (view->page_cache, page,
 776                                 view->rotation,
 777                                 view->scale,
 778                                 &width, &height);
 779         compute_border (view, width, height, border);
 780         page_area->width = width + border->left + border->right;
 781         page_area->height = height + border->top + border->bottom;
 782
 783         if (view->presentation) {
 784                 page_area->x = (MAX (0, widget->allocation.width - width))/2;
 785                 page_area->y = (MAX (0, widget->allocation.height - height))/2;
 786         } else if (view->continuous) {
 787                 gint max_width;
 788                 gint x, y;
 789
 790                 ev_page_cache_get_max_width (view->page_cache, view->rotation,
 791                                              view->scale, &max_width);
 792                 max_width = max_width + border->left + border->right;
 793                 /* Get the location of the bounding box */
 794                 if (view->dual_page) {
 795                         x = view->spacing + ((page % 2 == ev_page_cache_get_dual_even_left (view->page_cache)) ? 0 : 1) * (max_width + view->spacing);
 796                         x = x + MAX (0, widget->allocation.width - (max_width * 2 + view->spacing * 3)) / 2;
 797                         if (page % 2 == ev_page_cache_get_dual_even_left (view->page_cache))
 798                                 x = x + (max_width - width - border->left - border->right);
 799                 } else {
 800                         x = view->spacing;
 801                         x = x + MAX (0, widget->allocation.width - (width + view->spacing * 2)) / 2;
 802                 }
 803
 804                 get_page_y_offset (view, page, view->scale, &y);
 805
 806                 page_area->x = x;
 807                 page_area->y = y;
 808         } else {
 809                 gint x, y;
 810                 if (view->dual_page) {
 811                         gint width_2, height_2;
 812                         gint max_width = width;
 813                         gint max_height = height;
 814                         GtkBorder overall_border;
 815                         gint other_page;
 816
 817                         other_page = (page % 2 == ev_page_cache_get_dual_even_left (view->page_cache)) ? page + 1: page - 1;
 818
 819                         /* First, we get the bounding box of the two pages */
 820                         if (other_page < ev_page_cache_get_n_pages (view->page_cache)
 821                             && (0 <= other_page)) {
 822                                 ev_page_cache_get_size (view->page_cache,
 823                                                         other_page,
 824                                                         view->rotation,
 825                                                         view->scale,
 826                                                         &width_2, &height_2);
 827                                 if (width_2 > width)
 828                                         max_width = width_2;
 829                                 if (height_2 > height)
 830                                         max_height = height_2;
 831                         }
 832                         compute_border (view, max_width, max_height, &overall_border);
 833
 834                         /* Find the offsets */
 835                         x = view->spacing;
 836                         y = view->spacing;
 837
 838                         /* Adjust for being the left or right page */
 839                         if (page % 2 == ev_page_cache_get_dual_even_left (view->page_cache))
 840                                 x = x + max_width - width;
 841                         else
 842                                 x = x + (max_width + overall_border.left + overall_border.right) + view->spacing;
 843
 844                         y = y + (max_height - height)/2;
 845
 846                         /* Adjust for extra allocation */
 847                         x = x + MAX (0, widget->allocation.width -
 848                                      ((max_width + overall_border.left + overall_border.right) * 2 + view->spacing * 3))/2;
 849                         y = y + MAX (0, widget->allocation.height - (height + view->spacing * 2))/2;
 850                 } else {
 851                         x = view->spacing;
 852                         y = view->spacing;
 853
 854                         /* Adjust for extra allocation */
 855                         x = x + MAX (0, widget->allocation.width - (width + border->left + border->right + view->spacing * 2))/2;
 856                         y = y + MAX (0, widget->allocation.height - (height + border->top + border->bottom +  view->spacing * 2))/2;
 857                 }
 858
 859                 page_area->x = x;
 860                 page_area->y = y;
 861         }
 862
 863         return TRUE;
 864 }
 865
 866 static void
 867 view_point_to_doc_point (EvView *view,
 868                          GdkPoint *view_point,
 869                          GdkRectangle *page_area,
 870                          double  *doc_point_x,
 871                          double  *doc_point_y)
 872 {
 873         *doc_point_x = (double) (view_point->x - page_area->x) / view->scale;
 874         *doc_point_y = (double) (view_point->y - page_area->y) / view->scale;
 875 }
 876
 877 static void
 878 view_rect_to_doc_rect (EvView *view,
 879                        GdkRectangle *view_rect,
 880                        GdkRectangle *page_area,
 881                        EvRectangle  *doc_rect)
 882 {
 883         doc_rect->x1 = (double) (view_rect->x - page_area->x) / view->scale;
 884         doc_rect->y1 = (double) (view_rect->y - page_area->y) / view->scale;
 885         doc_rect->x2 = doc_rect->x1 + (double) view_rect->width / view->scale;
 886         doc_rect->y2 = doc_rect->y1 + (double) view_rect->height / view->scale;
 887 }
 888
 889 static gboolean
 890 doc_point_to_view_point (EvView       *view,
 891                          int           page,
 892                          EvPoint      *doc_point,
 893                          GdkPoint     *view_point)
 894 {
 895         GdkRectangle page_area;
 896         GtkBorder border;
 897         double x, y, view_x, view_y;
 898         int width, height;
 899
 900         ev_page_cache_get_size (view->page_cache, page,
 901                                 view->rotation,
 902                                 1.0,
 903                                 &width, &height);
 904
 905         if (view->rotation == 0) {
 906                 x = doc_point->x;
 907                 y = doc_point->y;
 908         } else if (view->rotation == 90) {
 909                 x = width - doc_point->y;
 910                 y = doc_point->x;
 911         } else if (view->rotation == 180) {
 912                 x = width - doc_point->x;
 913                 y = height - doc_point->y;
 914         } else if (view->rotation == 270) {
 915                 x = doc_point->y;
 916                 y = height - doc_point->x;
 917         } else {
 918                 g_assert_not_reached ();
 919         }
 920
 921         get_page_extents (view, page, &page_area, &border);
 922
 923         view_x = x * view->scale;
 924         view_y = y * view->scale;
 925         view_point->x = view_x + page_area.x;
 926         view_point->y = view_y + page_area.y;
 927
 928         return (view_x > 0 && view_x <= page_area.width &&
 929                 view_y > 0 && view_y <= page_area.height);
 930 }
 931
 932 static void
 933 doc_rect_to_view_rect (EvView       *view,
 934                        int           page,
 935                        EvRectangle  *doc_rect,
 936                        GdkRectangle *view_rect)
 937 {
 938         GdkRectangle page_area;
 939         GtkBorder border;
 940         double x, y, w, h;
 941         int width, height;
 942
 943         ev_page_cache_get_size (view->page_cache, page,
 944                                 view->rotation,
 945                                 1.0,
 946                                 &width, &height);
 947
 948         if (view->rotation == 0) {
 949                 x = doc_rect->x1;
 950                 y = doc_rect->y1;
 951                 w = doc_rect->x2 - doc_rect->x1;
 952                 h = doc_rect->y2 - doc_rect->y1;
 953         } else if (view->rotation == 90) {
 954                 x = width - doc_rect->y2;
 955                 y = doc_rect->x1;
 956                 w = doc_rect->y2 - doc_rect->y1;
 957                 h = doc_rect->x2 - doc_rect->x1;
 958         } else if (view->rotation == 180) {
 959                 x = width - doc_rect->x2;
 960                 y = height - doc_rect->y2;
 961                 w = doc_rect->x2 - doc_rect->x1;
 962                 h = doc_rect->y2 - doc_rect->y1;
 963         } else if (view->rotation == 270) {
 964                 x = doc_rect->y1;
 965                 y = height - doc_rect->x2;
 966                 w = doc_rect->y2 - doc_rect->y1;
 967                 h = doc_rect->x2 - doc_rect->x1;
 968         } else {
 969                 g_assert_not_reached ();
 970         }
 971
 972         get_page_extents (view, page, &page_area, &border);
 973
 974         view_rect->x = x * view->scale + page_area.x;
 975         view_rect->y = y * view->scale + page_area.y;
 976         view_rect->width = w * view->scale;
 977         view_rect->height = h * view->scale;
 978 }
 979
 980 static void
 981 find_page_at_location (EvView  *view,
 982                        gdouble  x,
 983                        gdouble  y,
 984                        gint    *page,
 985                        gint    *x_offset,
 986                        gint    *y_offset)
 987 {
 988         int i;
 989
 990         if (view->document == NULL)
 991                 return;
 992
 993         g_assert (page);
 994         g_assert (x_offset);
 995         g_assert (y_offset);
 996
 997         for (i = view->start_page; i <= view->end_page; i++) {
 998                 GdkRectangle page_area;
 999                 GtkBorder border;
1000
1001                 if (! get_page_extents (view, i, &page_area, &border))
1002                         continue;
1003
1004                 if ((x >= page_area.x + border.left) &&
1005                     (x < page_area.x + page_area.width - border.right) &&
1006                     (y >= page_area.y + border.top) &&
1007                     (y < page_area.y + page_area.height - border.bottom)) {
1008                         *page = i;
1009                         *x_offset = x - (page_area.x + border.left);
1010                         *y_offset = y - (page_area.y + border.top);
1011                         return;
1012                 }
1013         }
1014
1015         *page = -1;
1016 }
1017
1018 static gboolean
1019 location_in_text (EvView  *view,
1020                   gdouble  x,
1021                   gdouble  y)
1022 {
1023         GdkRegion *region;
1024         gint page = -1;
1025         gint x_offset = 0, y_offset = 0;
1026
1027         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1028
1029         if (page == -1)
1030                 return FALSE;
1031
1032         region = ev_pixbuf_cache_get_text_mapping (view->pixbuf_cache, page);
1033
1034         if (region)
1035                 return gdk_region_point_in (region, x_offset / view->scale, y_offset / view->scale);
1036         else
1037                 return FALSE;
1038 }
1039
1040 static int
1041 ev_view_get_width (EvView *view)
1042 {
1043         return GTK_WIDGET (view)->allocation.width;
1044 }
1045
1046 static int
1047 ev_view_get_height (EvView *view)
1048 {
1049         return GTK_WIDGET (view)->allocation.height;
1050 }
1051
1052 static gboolean
1053 location_in_selected_text (EvView  *view,
1054                            gdouble  x,
1055                            gdouble  y)
1056 {
1057         gint page = -1;
1058         gint x_offset = 0, y_offset = 0;
1059         EvViewSelection *selection;
1060         GList *l = NULL;
1061
1062         for (l = view->selection_info.selections; l != NULL; l = l->next) {
1063                 selection = (EvViewSelection *)l->data;
1064
1065                 find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1066
1067                 if (page != selection->page)
1068                         continue;
1069
1070                 if (selection->covered_region &&
1071                     gdk_region_point_in (selection->covered_region, x_offset, y_offset))
1072                         return TRUE;
1073         }
1074
1075         return FALSE;
1076 }
1077
1078 static gboolean
1079 get_doc_point_from_offset (EvView *view,
1080                            gint    page,
1081                            gint    x_offset,
1082                            gint    y_offset,
1083                            gint   *x_new,
1084                            gint   *y_new)
1085 {
1086         int width, height;
1087         double x, y;
1088
1089         ev_page_cache_get_size (view->page_cache, page,
1090                                 view->rotation,
1091                                 1.0,
1092                                 &width, &height);
1093
1094         x_offset = x_offset / view->scale;
1095         y_offset = y_offset / view->scale;
1096
1097         if (view->rotation == 0) {
1098                 x = x_offset;
1099                 y = y_offset;
1100         } else if (view->rotation == 90) {
1101                 x = y_offset;
1102                 y = width - x_offset;
1103         } else if (view->rotation == 180) {
1104                 x = width - x_offset;
1105                 y = height - y_offset;
1106         } else if (view->rotation == 270) {
1107                 x = height - y_offset;
1108                 y = x_offset;
1109         } else {
1110                 g_assert_not_reached ();
1111         }
1112
1113         *x_new = x;
1114         *y_new = y;
1115
1116         return TRUE;
1117 }
1118
1119 /*** Hyperref ***/
1120 static EvLink *
1121 ev_view_get_link_at_location (EvView  *view,
1122                               gdouble  x,
1123                               gdouble  y)
1124 {
1125         gint page = -1;
1126         gint x_offset = 0, y_offset = 0;
1127         gint x_new = 0, y_new = 0;
1128         GList *link_mapping;
1129
1130         if (!EV_IS_DOCUMENT_LINKS (view->document))
1131                 return NULL;
1132
1133         x += view->scroll_x;
1134         y += view->scroll_y;
1135
1136         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1137
1138         if (page == -1)
1139                 return NULL;
1140
1141
1142         if (get_doc_point_from_offset (view, page, x_offset,
1143                                        y_offset, &x_new, &y_new) == FALSE)
1144                 return NULL;
1145
1146         link_mapping = ev_pixbuf_cache_get_link_mapping (view->pixbuf_cache, page);
1147
1148         if (link_mapping)
1149                 return ev_link_mapping_find (link_mapping, x_new, y_new);
1150         else
1151                 return NULL;
1152 }
1153
1154 static void
1155 goto_fitr_dest (EvView *view, EvLinkDest *dest)
1156 {
1157         EvPoint doc_point;
1158         gdouble zoom, left, top;
1159         gboolean change_left, change_top;
1160
1161         left = ev_link_dest_get_left (dest, &change_left);
1162         top = ev_link_dest_get_top (dest, &change_top);
1163
1164         zoom = zoom_for_size_best_fit (ev_link_dest_get_right (dest) - left,
1165                                        ev_link_dest_get_bottom (dest) - top,
1166                                        ev_view_get_width (view),
1167                                        ev_view_get_height (view), 0, 0);
1168
1169         ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1170         ev_view_set_zoom (view, zoom, FALSE);
1171
1172         doc_point.x = change_left ? left : 0;
1173         doc_point.y = change_top ? top : 0;
1174
1175         view->current_page = ev_link_dest_get_page (dest);
1176         if (change_left || change_top)
1177                 view->pending_point = doc_point;
1178         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1179
1180         gtk_widget_queue_resize (GTK_WIDGET (view));
1181 }
1182
1183 static void
1184 goto_fitv_dest (EvView *view, EvLinkDest *dest)
1185 {
1186         EvPoint doc_point;
1187         int doc_width, doc_height, page;
1188         double zoom, left;
1189         gboolean change_left;
1190
1191         page = ev_link_dest_get_page (dest);
1192         ev_page_cache_get_size (view->page_cache, page, 0, 1.0, &doc_width, &doc_height);
1193
1194         left = ev_link_dest_get_left (dest, &change_left);
1195         doc_point.x = change_left ? left : 0;
1196         doc_point.y = 0;
1197
1198         zoom = zoom_for_size_fit_height (doc_width - doc_point.x , doc_height,
1199                                          ev_view_get_width (view),
1200                                          ev_view_get_height (view), 0);
1201
1202         ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1203         ev_view_set_zoom (view, zoom, FALSE);
1204
1205         view->current_page = page;
1206         if (change_left)
1207                 view->pending_point = doc_point;
1208         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1209
1210         gtk_widget_queue_resize (GTK_WIDGET (view));
1211 }
1212
1213 static void
1214 goto_fith_dest (EvView *view, EvLinkDest *dest)
1215 {
1216         EvPoint doc_point;
1217         int doc_width, doc_height, page;
1218         gdouble zoom, top;
1219         gboolean change_top;
1220
1221         page = ev_link_dest_get_page (dest);
1222         ev_page_cache_get_size (view->page_cache, page, 0, 1.0, &doc_width, &doc_height);
1223
1224         top = ev_link_dest_get_top (dest, &change_top);
1225
1226         doc_point.x = 0;
1227         doc_point.y = change_top ? top : 0;
1228
1229         zoom = zoom_for_size_fit_width (doc_width, top,
1230                                         ev_view_get_width (view),
1231                                         ev_view_get_height (view), 0);
1232
1233         ev_view_set_sizing_mode (view, EV_SIZING_FIT_WIDTH);
1234         ev_view_set_zoom (view, zoom, FALSE);
1235
1236         view->current_page = page;
1237         if (change_top)
1238                 view->pending_point = doc_point;
1239         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1240
1241         gtk_widget_queue_resize (GTK_WIDGET (view));
1242 }
1243
1244 static void
1245 goto_fit_dest (EvView *view, EvLinkDest *dest)
1246 {
1247         double zoom;
1248         int doc_width, doc_height;
1249         int page;
1250
1251         page = ev_link_dest_get_page (dest);
1252         ev_page_cache_get_size (view->page_cache, page, 0, 1.0, &doc_width, &doc_height);
1253
1254         zoom = zoom_for_size_best_fit (doc_width, doc_height, ev_view_get_width (view),
1255                                        ev_view_get_height (view), 0, 0);
1256
1257         ev_view_set_sizing_mode (view, EV_SIZING_BEST_FIT);
1258         ev_view_set_zoom (view, zoom, FALSE);
1259
1260         view->current_page = page;
1261         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1262
1263         gtk_widget_queue_resize (GTK_WIDGET (view));
1264 }
1265
1266 static void
1267 goto_xyz_dest (EvView *view, EvLinkDest *dest)
1268 {
1269         EvPoint doc_point;
1270         gint page;
1271         gdouble zoom, left, top;
1272         gboolean change_zoom, change_left, change_top;
1273
1274         zoom = ev_link_dest_get_zoom (dest, &change_zoom);
1275         page = ev_link_dest_get_page (dest);
1276
1277         if (change_zoom && zoom > 1) {
1278                 ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1279                 ev_view_set_zoom (view, zoom, FALSE);
1280         }
1281
1282         left = ev_link_dest_get_left (dest, &change_left);
1283         top = ev_link_dest_get_top (dest, &change_top);
1284
1285         doc_point.x = change_left ? left : 0;
1286         doc_point.y = change_top ? top : 0;
1287
1288         view->current_page = page;
1289         if (change_left || change_top)
1290                 view->pending_point = doc_point;
1291         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1292
1293         gtk_widget_queue_resize (GTK_WIDGET (view));
1294 }
1295
1296 static void
1297 goto_dest (EvView *view, EvLinkDest *dest)
1298 {
1299         EvLinkDestType type;
1300         int page, n_pages, current_page;
1301
1302         page = ev_link_dest_get_page (dest);
1303         n_pages = ev_page_cache_get_n_pages (view->page_cache);
1304
1305         if (page < 0 || page >= n_pages)
1306                 return;
1307
1308         current_page = view->current_page;
1309
1310         type = ev_link_dest_get_dest_type (dest);
1311
1312         switch (type) {
1313                 case EV_LINK_DEST_TYPE_PAGE:
1314                         ev_page_cache_set_current_page (view->page_cache, page);
1315                         break;
1316                 case EV_LINK_DEST_TYPE_FIT:
1317                         goto_fit_dest (view, dest);
1318                         break;
1319                 case EV_LINK_DEST_TYPE_FITH:
1320                         goto_fith_dest (view, dest);
1321                         break;
1322                 case EV_LINK_DEST_TYPE_FITV:
1323                         goto_fitv_dest (view, dest);
1324                         break;
1325                 case EV_LINK_DEST_TYPE_FITR:
1326                         goto_fitr_dest (view, dest);
1327                         break;
1328                 case EV_LINK_DEST_TYPE_XYZ:
1329                         goto_xyz_dest (view, dest);
1330                         break;
1331                 case EV_LINK_DEST_TYPE_PAGE_LABEL:
1332                         ev_page_cache_set_page_label (view->page_cache, ev_link_dest_get_page_label (dest));
1333                         break;
1334                 default:
1335                         g_assert_not_reached ();
1336         }
1337
1338         if (current_page != view->current_page)
1339                 ev_page_cache_set_current_page (view->page_cache,
1340                                                 view->current_page);
1341 }
1342
1343 static void
1344 ev_view_goto_dest (EvView *view, EvLinkDest *dest)
1345 {
1346         EvLinkDestType type;
1347
1348         type = ev_link_dest_get_dest_type (dest);
1349
1350         if (type == EV_LINK_DEST_TYPE_NAMED) {
1351                 EvLinkDest  *dest2;
1352                 const gchar *named_dest;
1353
1354                 named_dest = ev_link_dest_get_named_dest (dest);
1355                 dest2 = ev_document_links_find_link_dest (EV_DOCUMENT_LINKS (view->document),
1356                                                           named_dest);
1357                 if (dest2) {
1358                         goto_dest (view, dest2);
1359                         g_object_unref (dest2);
1360                 }
1361
1362                 return;
1363         }
1364
1365         goto_dest (view, dest);
1366 }
1367
1368 void
1369 ev_view_handle_link (EvView *view, EvLink *link)
1370 {
1371         EvLinkAction    *action = NULL;
1372         EvLinkActionType type;
1373
1374         action = ev_link_get_action (link);
1375         if (!action)
1376                 return;
1377
1378         type = ev_link_action_get_action_type (action);
1379
1380         switch (type) {
1381                 case EV_LINK_ACTION_TYPE_GOTO_DEST: {
1382                         EvLinkDest *dest;
1383
1384                         g_signal_emit (view, signals[SIGNAL_HANDLE_LINK], 0, link);
1385
1386                         dest = ev_link_action_get_dest (action);
1387                         ev_view_goto_dest (view, dest);
1388                 }
1389                         break;
1390                 case EV_LINK_ACTION_TYPE_GOTO_REMOTE:
1391                 case EV_LINK_ACTION_TYPE_EXTERNAL_URI:
1392                 case EV_LINK_ACTION_TYPE_LAUNCH:
1393                 case EV_LINK_ACTION_TYPE_NAMED:
1394                         g_signal_emit (view, signals[SIGNAL_EXTERNAL_LINK], 0, action);
1395                         break;
1396         }
1397 }
1398
1399 gchar *
1400 ev_view_page_label_from_dest (EvView *view, EvLinkDest *dest)
1401 {
1402         EvLinkDestType type;
1403         gchar *msg = NULL;
1404
1405         type = ev_link_dest_get_dest_type (dest);
1406
1407         switch (type) {
1408                 case EV_LINK_DEST_TYPE_NAMED: {
1409                         EvLinkDest  *dest2;
1410                         const gchar *named_dest;
1411
1412                         named_dest = ev_link_dest_get_named_dest (dest);
1413                         dest2 = ev_document_links_find_link_dest (EV_DOCUMENT_LINKS (view->document),
1414                                                                   named_dest);
1415                         if (dest2) {
1416                                 msg = ev_page_cache_get_page_label (view->page_cache,
1417                                                                     ev_link_dest_get_page (dest2));
1418                                 g_object_unref (dest2);
1419                         }
1420                 }
1421
1422                         break;
1423                 case EV_LINK_DEST_TYPE_PAGE_LABEL: {
1424                         msg = g_strdup (ev_link_dest_get_page_label (dest));
1425                 }
1426                         break;
1427                 default:
1428                         msg = ev_page_cache_get_page_label (view->page_cache,
1429                                                             ev_link_dest_get_page (dest));
1430         }
1431
1432         return msg;
1433 }
1434
1435 static char *
1436 tip_from_action_named (EvLinkAction *action)
1437 {
1438         const gchar *name = ev_link_action_get_name (action);
1439
1440         if (g_ascii_strcasecmp (name, "FirstPage") == 0) {
1441                 return g_strdup (_("Go to first page"));
1442         } else if (g_ascii_strcasecmp (name, "PrevPage") == 0) {
1443                 return g_strdup (_("Go to previous page"));
1444         } else if (g_ascii_strcasecmp (name, "NextPage") == 0) {
1445                 return g_strdup (_("Go to next page"));
1446         } else if (g_ascii_strcasecmp (name, "LastPage") == 0) {
1447                 return g_strdup (_("Go to last page"));
1448         } else if (g_ascii_strcasecmp (name, "GoToPage") == 0) {
1449                 return g_strdup (_("Go to page"));
1450         } else if (g_ascii_strcasecmp (name, "Find") == 0) {
1451                 return g_strdup (_("Find"));
1452         }
1453
1454         return NULL;
1455 }
1456
1457 static char *
1458 tip_from_link (EvView *view, EvLink *link)
1459 {
1460         EvLinkAction *action;
1461         EvLinkActionType type;
1462         char *msg = NULL;
1463         char *page_label;
1464         const char *title;
1465
1466         action = ev_link_get_action (link);
1467         title = ev_link_get_title (link);
1468
1469         if (!action)
1470                 return title ? g_strdup (title) : NULL;
1471
1472         type = ev_link_action_get_action_type (action);
1473
1474         switch (type) {
1475                 case EV_LINK_ACTION_TYPE_GOTO_DEST:
1476                         page_label = ev_view_page_label_from_dest (view,
1477                                                                    ev_link_action_get_dest (action));
1478                         if (page_label) {
1479                                 msg = g_strdup_printf (_("Go to page %s"), page_label);
1480                                 g_free (page_label);
1481                         }
1482                         break;
1483                 case EV_LINK_ACTION_TYPE_GOTO_REMOTE:
1484                         if (title) {
1485                                 msg = g_strdup_printf (_("Go to %s on file “%s”"), title,
1486                                                        ev_link_action_get_filename (action));
1487                         } else {
1488                                 msg = g_strdup_printf (_("Go to file “%s”"),
1489                                                        ev_link_action_get_filename (action));
1490                         }
1491                         break;
1492                 case EV_LINK_ACTION_TYPE_EXTERNAL_URI:
1493                         msg = g_strdup (ev_link_action_get_uri (action));
1494                         break;
1495                 case EV_LINK_ACTION_TYPE_LAUNCH:
1496                         msg = g_strdup_printf (_("Launch %s"),
1497                                                ev_link_action_get_filename (action));
1498                         break;
1499                 case EV_LINK_ACTION_TYPE_NAMED:
1500                         msg = tip_from_action_named (action);
1501                         break;
1502                 default:
1503                         if (title)
1504                                 msg = g_strdup (title);
1505                         break;
1506         }
1507
1508         return msg;
1509 }
1510
1511 static void
1512 ev_view_handle_cursor_over_xy (EvView *view, gint x, gint y)
1513 {
1514         EvLink      *link;
1515         EvFormField *field;
1516
1517         if (view->cursor == EV_VIEW_CURSOR_HIDDEN)
1518                 return;
1519
1520         if (view->drag_info.in_drag) {
1521                 if (view->cursor != EV_VIEW_CURSOR_DRAG)
1522                         ev_view_set_cursor (view, EV_VIEW_CURSOR_DRAG);
1523                 return;
1524         }
1525
1526         if (view->scroll_info.autoscrolling) {
1527                 if (view->cursor != EV_VIEW_CURSOR_AUTOSCROLL)
1528                         ev_view_set_cursor (view, EV_VIEW_CURSOR_AUTOSCROLL);
1529                 return;
1530         }
1531
1532         link = ev_view_get_link_at_location (view, x, y);
1533
1534 #if !GTK_CHECK_VERSION (2, 11, 7)
1535         if (view->link_tooltip == NULL) {
1536                 view->link_tooltip = ev_tooltip_new (GTK_WIDGET (view));
1537         }
1538
1539         if (view->hovered_link != link) {
1540                 view->hovered_link = link;
1541                 ev_tooltip_deactivate (EV_TOOLTIP (view->link_tooltip));
1542         }
1543 #endif
1544
1545         if (link) {
1546 #if GTK_CHECK_VERSION (2, 11, 7)
1547                 g_object_set (view, "has-tooltip", TRUE, NULL);
1548 #else
1549                 char *msg = tip_from_link (view, link);
1550
1551                 if (msg && g_utf8_validate (msg, -1, NULL)) {
1552                         EvTooltip *tooltip = EV_TOOLTIP (view->link_tooltip);
1553
1554                         ev_tooltip_set_position (tooltip, x, y);
1555                         ev_tooltip_set_text (tooltip, msg);
1556                         ev_tooltip_activate (tooltip);
1557                 }
1558                 g_free (msg);
1559 #endif
1560                 ev_view_set_cursor (view, EV_VIEW_CURSOR_LINK);
1561         } else if ((field = ev_view_get_form_field_at_location (view, x, y))) {
1562                 if (field->is_read_only) {
1563                         if (view->cursor == EV_VIEW_CURSOR_LINK ||
1564                             view->cursor == EV_VIEW_CURSOR_IBEAM ||
1565                             view->cursor == EV_VIEW_CURSOR_DRAG)
1566                                 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
1567                 } else if (EV_IS_FORM_FIELD_TEXT (field)) {
1568                         ev_view_set_cursor (view, EV_VIEW_CURSOR_IBEAM);
1569                 } else {
1570                         ev_view_set_cursor (view, EV_VIEW_CURSOR_LINK);
1571                 }
1572         } else if (location_in_text (view, x + view->scroll_x, y + view->scroll_y)) {
1573                 ev_view_set_cursor (view, EV_VIEW_CURSOR_IBEAM);
1574         } else {
1575                 if (view->cursor == EV_VIEW_CURSOR_LINK ||
1576                     view->cursor == EV_VIEW_CURSOR_IBEAM ||
1577                     view->cursor == EV_VIEW_CURSOR_DRAG ||
1578                     view->cursor == EV_VIEW_CURSOR_AUTOSCROLL)
1579                         ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
1580         }
1581 }
1582
1583 /*** Images ***/
1584 static EvImage *
1585 ev_view_get_image_at_location (EvView  *view,
1586                                gdouble  x,
1587                                gdouble  y)
1588 {
1589         gint page = -1;
1590         gint x_offset = 0, y_offset = 0;
1591         gint x_new = 0, y_new = 0;
1592         GList *image_mapping;
1593
1594         if (!EV_IS_DOCUMENT_IMAGES (view->document))
1595                 return NULL;
1596
1597         x += view->scroll_x;
1598         y += view->scroll_y;
1599
1600         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1601
1602         if (page == -1)
1603                 return NULL;
1604
1605         if (get_doc_point_from_offset (view, page, x_offset,
1606                                        y_offset, &x_new, &y_new) == FALSE)
1607                 return NULL;
1608
1609         image_mapping = ev_pixbuf_cache_get_image_mapping (view->pixbuf_cache, page);
1610
1611         if (image_mapping)
1612                 return ev_image_mapping_find (image_mapping, x_new, y_new);
1613         else
1614                 return NULL;
1615 }
1616
1617 /*** Forms ***/
1618 static EvFormField *
1619 ev_view_get_form_field_at_location (EvView  *view,
1620                                     gdouble  x,
1621                                     gdouble  y)
1622 {
1623         gint page = -1;
1624         gint x_offset = 0, y_offset = 0;
1625         gint x_new = 0, y_new = 0;
1626         GList *forms_mapping;
1627
1628         if (!EV_IS_DOCUMENT_FORMS (view->document))
1629                 return NULL;
1630
1631         x += view->scroll_x;
1632         y += view->scroll_y;
1633
1634         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1635
1636         if (page == -1)
1637                 return NULL;
1638
1639         if (get_doc_point_from_offset (view, page, x_offset,
1640                                        y_offset, &x_new, &y_new) == FALSE)
1641                 return NULL;
1642
1643         forms_mapping = ev_pixbuf_cache_get_form_field_mapping (view->pixbuf_cache, page);
1644
1645         if (forms_mapping)
1646                 return ev_form_field_mapping_find (forms_mapping, x_new, y_new);
1647         else
1648                 return NULL;
1649 }
1650
1651 static GdkRegion *
1652 ev_view_form_field_get_region (EvView      *view,
1653                                EvFormField *field)
1654 {
1655         EvRectangle  field_area;
1656         GdkRectangle view_area;
1657         GList       *forms_mapping;
1658
1659         forms_mapping = ev_pixbuf_cache_get_form_field_mapping (view->pixbuf_cache,
1660                                                                 field->page->index);
1661         ev_form_field_mapping_get_area (forms_mapping, field, &field_area);
1662         doc_rect_to_view_rect (view, field->page->index, &field_area, &view_area);
1663         view_area.x -= view->scroll_x;
1664         view_area.y -= view->scroll_y;
1665
1666         return gdk_region_rectangle (&view_area);
1667 }
1668
1669 static gboolean
1670 ev_view_forms_remove_widgets (EvView *view)
1671 {
1672         ev_view_remove_all (view);
1673
1674         return FALSE;
1675 }
1676
1677 static void
1678 ev_view_form_field_destroy (GtkWidget *widget,
1679                             EvView    *view)
1680 {
1681         g_idle_add ((GSourceFunc)ev_view_forms_remove_widgets, view);
1682 }
1683
1684 static GtkWidget *
1685 ev_view_form_field_button_create_widget (EvView      *view,
1686                                          EvFormField *field)
1687 {
1688         EvFormFieldButton *field_button = EV_FORM_FIELD_BUTTON (field);
1689         GdkRegion         *field_region = NULL;
1690
1691         switch (field_button->type) {
1692                 case EV_FORM_FIELD_BUTTON_PUSH:
1693                         return NULL;
1694                 case EV_FORM_FIELD_BUTTON_CHECK:
1695                 case EV_FORM_FIELD_BUTTON_RADIO: {
1696                         gboolean  state;
1697                         GList    *forms_mapping, *l;
1698
1699                         state = ev_document_forms_form_field_button_get_state (EV_DOCUMENT_FORMS (view->document),
1700                                                                                field);
1701
1702                         /* FIXME: it actually depends on NoToggleToOff flags */
1703                         if (field_button->type == EV_FORM_FIELD_BUTTON_RADIO &&
1704                             state && field_button->state)
1705                                 return NULL;
1706
1707                         field_region = ev_view_form_field_get_region (view, field);
1708
1709                         /* For radio buttons and checkbox buttons that are in a set
1710                          * we need to update also the region for the current selected item
1711                          */
1712                         forms_mapping = ev_pixbuf_cache_get_form_field_mapping (view->pixbuf_cache,
1713                                                                                 field->page->index);
1714                         for (l = forms_mapping; l; l = g_list_next (l)) {
1715                                 EvFormField *button = ((EvFormFieldMapping *)(l->data))->field;
1716                                 GdkRegion   *button_region;
1717
1718                                 if (button->id == field->id)
1719                                         continue;
1720
1721                                 /* FIXME: only buttons in the same group should be updated */
1722                                 if (!EV_IS_FORM_FIELD_BUTTON (button) ||
1723                                     EV_FORM_FIELD_BUTTON (button)->type != field_button->type ||
1724                                     EV_FORM_FIELD_BUTTON (button)->state != TRUE)
1725                                         continue;
1726
1727                                 button_region = ev_view_form_field_get_region (view, button);
1728                                 gdk_region_union (field_region, button_region);
1729                                 gdk_region_destroy (button_region);
1730                         }
1731
1732                         ev_document_forms_form_field_button_set_state (EV_DOCUMENT_FORMS (view->document),
1733                                                                        field, !state);
1734                         field_button->state = !state;
1735                 }
1736                         break;
1737         }
1738
1739         ev_pixbuf_cache_reload_page (view->pixbuf_cache,
1740                                      field_region,
1741                                      field->page->index,
1742                                      view->rotation,
1743                                      view->scale);
1744         gdk_region_destroy (field_region);
1745
1746         return NULL;
1747 }
1748
1749 static void
1750 ev_view_form_field_text_save (EvView    *view,
1751                               GtkWidget *widget)
1752 {
1753         EvFormField *field;
1754
1755         if (!view->document)
1756                 return;
1757
1758         field = g_object_get_data (G_OBJECT (widget), "form-field");
1759
1760         if (field->changed) {
1761                 EvFormFieldText *field_text = EV_FORM_FIELD_TEXT (field);
1762                 GdkRegion       *field_region;
1763
1764                 field_region = ev_view_form_field_get_region (view, field);
1765
1766                 ev_document_forms_form_field_text_set_text (EV_DOCUMENT_FORMS (view->document),
1767                                                             field, field_text->text);
1768                 field->changed = FALSE;
1769                 ev_pixbuf_cache_reload_page (view->pixbuf_cache,
1770                                              field_region,
1771                                              field->page->index,
1772                                              view->rotation,
1773                                              view->scale);
1774                 gdk_region_destroy (field_region);
1775         }
1776 }
1777
1778 static void
1779 ev_view_form_field_text_changed (GtkWidget   *widget,
1780                                  EvFormField *field)
1781 {
1782         EvFormFieldText *field_text = EV_FORM_FIELD_TEXT (field);
1783         gchar           *text = NULL;
1784
1785         if (GTK_IS_ENTRY (widget)) {
1786                 text = g_strdup (gtk_entry_get_text (GTK_ENTRY (widget)));
1787         } else if (GTK_IS_TEXT_BUFFER (widget)) {
1788                 GtkTextIter start, end;
1789
1790                 gtk_text_buffer_get_bounds (GTK_TEXT_BUFFER (widget), &start, &end);
1791                 text = gtk_text_buffer_get_text (GTK_TEXT_BUFFER (widget),
1792                                                  &start, &end, FALSE);
1793         }
1794
1795         if (!field_text->text ||
1796             (field_text->text && g_ascii_strcasecmp (field_text->text, text) != 0)) {
1797                 g_free (field_text->text);
1798                 field_text->text = text;
1799                 field->changed = TRUE;
1800         }
1801 }
1802
1803 static GtkWidget *
1804 ev_view_form_field_text_create_widget (EvView      *view,
1805                                        EvFormField *field)
1806 {
1807         EvFormFieldText *field_text = EV_FORM_FIELD_TEXT (field);
1808         GtkWidget       *text = NULL;
1809         gchar           *txt;
1810
1811         txt = ev_document_forms_form_field_text_get_text (EV_DOCUMENT_FORMS (view->document),
1812                                                           field);
1813
1814         switch (field_text->type) {
1815                 case EV_FORM_FIELD_TEXT_FILE_SELECT:
1816                         /* TODO */
1817                 case EV_FORM_FIELD_TEXT_NORMAL:
1818                         text = gtk_entry_new ();
1819                         gtk_entry_set_has_frame (GTK_ENTRY (text), FALSE);
1820                         gtk_entry_set_max_length (GTK_ENTRY (text), field_text->max_len);
1821                         gtk_entry_set_visibility (GTK_ENTRY (text), !field_text->is_password);
1822
1823                         if (txt) {
1824                                 gtk_entry_set_text (GTK_ENTRY (text), txt);
1825                                 g_free (txt);
1826                         }
1827
1828                         g_signal_connect (G_OBJECT (text), "changed",
1829                                           G_CALLBACK (ev_view_form_field_text_changed),
1830                                           field);
1831                         g_signal_connect_after (G_OBJECT (text), "activate",
1832                                                 G_CALLBACK (ev_view_form_field_destroy),
1833                                                 view);
1834                         break;
1835                 case EV_FORM_FIELD_TEXT_MULTILINE: {
1836                         GtkTextBuffer *buffer;
1837
1838                         text = gtk_text_view_new ();
1839                         buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (text));
1840
1841                         if (txt) {
1842                                 gtk_text_buffer_set_text (buffer, txt, -1);
1843                                 g_free (txt);
1844                         }
1845
1846                         g_signal_connect (G_OBJECT (buffer), "changed",
1847                                           G_CALLBACK (ev_view_form_field_text_changed),
1848                                           field);
1849                 }
1850                         break;
1851         }
1852
1853         g_object_weak_ref (G_OBJECT (text),
1854                            (GWeakNotify)ev_view_form_field_text_save,
1855                            view);
1856
1857         return text;
1858 }
1859
1860 static void
1861 ev_view_form_field_choice_save (EvView    *view,
1862                                 GtkWidget *widget)
1863 {
1864         EvFormField *field;
1865
1866         if (!view->document)
1867                 return;
1868
1869         field = g_object_get_data (G_OBJECT (widget), "form-field");
1870
1871         if (field->changed) {
1872                 GList             *l;
1873                 EvFormFieldChoice *field_choice = EV_FORM_FIELD_CHOICE (field);
1874                 GdkRegion         *field_region;
1875
1876                 field_region = ev_view_form_field_get_region (view, field);
1877
1878                 if (field_choice->is_editable) {
1879                         ev_document_forms_form_field_choice_set_text (EV_DOCUMENT_FORMS (view->document),
1880                                                                       field, field_choice->text);
1881                 } else {
1882                         ev_document_forms_form_field_choice_unselect_all (EV_DOCUMENT_FORMS (view->document), field);
1883                         for (l = field_choice->selected_items; l; l = g_list_next (l)) {
1884                                 ev_document_forms_form_field_choice_select_item (EV_DOCUMENT_FORMS (view->document),
1885                                                                                  field,
1886                                                                                  GPOINTER_TO_INT (l->data));
1887                         }
1888                 }
1889                 field->changed = FALSE;
1890                 ev_pixbuf_cache_reload_page (view->pixbuf_cache,
1891                                              field_region,
1892                                              field->page->index,
1893                                              view->rotation,
1894                                              view->scale);
1895                 gdk_region_destroy (field_region);
1896         }
1897 }
1898
1899 static void
1900 ev_view_form_field_choice_changed (GtkWidget   *widget,
1901                                    EvFormField *field)
1902 {
1903         EvFormFieldChoice *field_choice = EV_FORM_FIELD_CHOICE (field);
1904
1905         if (GTK_IS_COMBO_BOX (widget)) {
1906                 gint item;
1907
1908                 item = gtk_combo_box_get_active (GTK_COMBO_BOX (widget));
1909                 if (!field_choice->selected_items ||
1910                     GPOINTER_TO_INT (field_choice->selected_items->data) != item) {
1911                         g_list_free (field_choice->selected_items);
1912                         field_choice->selected_items = NULL;
1913                         field_choice->selected_items = g_list_prepend (field_choice->selected_items,
1914                                                                        GINT_TO_POINTER (item));
1915                         field->changed = TRUE;
1916                 }
1917
1918                 if (GTK_IS_COMBO_BOX_ENTRY (widget)) {
1919                         gchar *text;
1920
1921                         text = gtk_combo_box_get_active_text (GTK_COMBO_BOX (widget));
1922                         if (!field_choice->text ||
1923                             (field_choice->text && g_ascii_strcasecmp (field_choice->text, text) != 0)) {
1924                                 g_free (field_choice->text);
1925                                 field_choice->text = text;
1926                                 field->changed = TRUE;
1927                         }
1928                 }
1929         } else if (GTK_IS_TREE_SELECTION (widget)) {
1930                 GtkTreeSelection *selection = GTK_TREE_SELECTION (widget);
1931                 GtkTreeModel     *model;
1932                 GList            *items, *l;
1933
1934                 items = gtk_tree_selection_get_selected_rows (selection, &model);
1935                 g_list_free (field_choice->selected_items);
1936                 field_choice->selected_items = NULL;
1937
1938                 for (l = items; l && l->data; l = g_list_next (l)) {
1939                         GtkTreeIter  iter;
1940                         GtkTreePath *path = (GtkTreePath *)l->data;
1941                         gint         item;
1942
1943                         gtk_tree_model_get_iter (model, &iter, path);
1944                         gtk_tree_model_get (model, &iter, 1, &item, -1);
1945
1946                         field_choice->selected_items = g_list_prepend (field_choice->selected_items,
1947                                                                        GINT_TO_POINTER (item));
1948
1949                         gtk_tree_path_free (path);
1950                 }
1951
1952                 g_list_free (items);
1953
1954                 field->changed = TRUE;
1955         }
1956 }
1957
1958 static GtkWidget *
1959 ev_view_form_field_choice_create_widget (EvView      *view,
1960                                          EvFormField *field)
1961 {
1962         EvFormFieldChoice *field_choice = EV_FORM_FIELD_CHOICE (field);
1963         GtkWidget         *choice;
1964         GtkTreeModel      *model;
1965         gint               n_items, i;
1966         gint               selected_item = 0;
1967
1968         n_items = ev_document_forms_form_field_choice_get_n_items (EV_DOCUMENT_FORMS (view->document),
1969                                                                    field);
1970         model = GTK_TREE_MODEL (gtk_list_store_new (2, G_TYPE_STRING, G_TYPE_INT));
1971         for (i = 0; i < n_items; i++) {
1972                 GtkTreeIter iter;
1973                 gchar      *item;
1974
1975                 item = ev_document_forms_form_field_choice_get_item (EV_DOCUMENT_FORMS (view->document),
1976                                                                      field, i);
1977                 if (ev_document_forms_form_field_choice_is_item_selected (
1978                             EV_DOCUMENT_FORMS (view->document), field, i)) {
1979                         selected_item = i;
1980                         /* FIXME: we need a get_selected_items function in poppler */
1981                         field_choice->selected_items = g_list_prepend (field_choice->selected_items,
1982                                                                        GINT_TO_POINTER (i));
1983                 }
1984
1985                 if (item) {
1986                         gtk_list_store_append (GTK_LIST_STORE (model), &iter);
1987                         gtk_list_store_set (GTK_LIST_STORE (model), &iter,
1988                                             0, item,
1989                                             1, i,
1990                                             -1);
1991                         g_free (item);
1992                 }
1993         }
1994
1995         if (field_choice->type == EV_FORM_FIELD_CHOICE_LIST) {
1996                 GtkCellRenderer  *renderer;
1997                 GtkWidget        *tree_view;
1998                 GtkTreeSelection *selection;
1999
2000                 tree_view = gtk_tree_view_new_with_model (model);
2001                 gtk_tree_view_set_headers_visible (GTK_TREE_VIEW (tree_view), FALSE);
2002
2003                 selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (tree_view));
2004                 if (field_choice->multi_select) {
2005                         gtk_tree_selection_set_mode (selection, GTK_SELECTION_MULTIPLE);
2006                 }
2007
2008                 /* TODO: set selected items */
2009
2010                 renderer = gtk_cell_renderer_text_new ();
2011                 gtk_tree_view_insert_column_with_attributes (GTK_TREE_VIEW (tree_view),
2012                                                              0,
2013                                                              "choix", renderer,
2014                                                              "text", 0,
2015                                                              NULL);
2016
2017                 choice = gtk_scrolled_window_new (NULL, NULL);
2018                 gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (choice),
2019                                                 GTK_POLICY_AUTOMATIC,
2020                                                 GTK_POLICY_AUTOMATIC);
2021                 gtk_container_add (GTK_CONTAINER (choice), tree_view);
2022                 gtk_widget_show (tree_view);
2023
2024                 g_signal_connect (G_OBJECT (selection), "changed",
2025                                   G_CALLBACK (ev_view_form_field_choice_changed),
2026                                   field);
2027                 g_signal_connect_after (G_OBJECT (selection), "changed",
2028                                         G_CALLBACK (ev_view_form_field_destroy),
2029                                         view);
2030         } else if (field_choice->is_editable) { /* ComboBoxEntry */
2031                 gchar *text;
2032
2033                 choice = gtk_combo_box_entry_new_with_model (model, 0);
2034                 text = ev_document_forms_form_field_choice_get_text (EV_DOCUMENT_FORMS (view->document), field);
2035                 if (text) {
2036                         gtk_entry_set_text (GTK_ENTRY (gtk_bin_get_child (GTK_BIN (choice))), text);
2037                         g_free (text);
2038                 }
2039
2040                 g_signal_connect (G_OBJECT (choice), "changed",
2041                                   G_CALLBACK (ev_view_form_field_choice_changed),
2042                                   field);
2043                 g_signal_connect_after (G_OBJECT (GTK_BIN (choice)->child), "activate",
2044                                         G_CALLBACK (ev_view_form_field_destroy),
2045                                         view);
2046         } else { /* ComboBoxText */
2047                 GtkCellRenderer *renderer;
2048
2049                 choice = gtk_combo_box_new_with_model (model);
2050                 renderer = gtk_cell_renderer_text_new ();
2051                 gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (choice),
2052                                             renderer, TRUE);
2053                 gtk_cell_layout_set_attributes (GTK_CELL_LAYOUT (choice),
2054                                                 renderer,
2055                                                 "text", 0,
2056                                                 NULL);
2057                 gtk_combo_box_set_active (GTK_COMBO_BOX (choice), selected_item);
2058                 gtk_combo_box_popup (GTK_COMBO_BOX (choice));
2059
2060                 g_signal_connect (G_OBJECT (choice), "changed",
2061                                   G_CALLBACK (ev_view_form_field_choice_changed),
2062                                   field);
2063                 g_signal_connect_after (G_OBJECT (choice), "changed",
2064                                         G_CALLBACK (ev_view_form_field_destroy),
2065                                         view);
2066         }
2067
2068         g_object_unref (model);
2069
2070         g_object_weak_ref (G_OBJECT (choice),
2071                            (GWeakNotify)ev_view_form_field_choice_save,
2072                            view);
2073
2074         return choice;
2075 }
2076
2077 static void
2078 ev_view_handle_form_field (EvView      *view,
2079                            EvFormField *field,
2080                            gdouble      x,
2081                            gdouble      y)
2082 {
2083         GtkWidget   *field_widget = NULL;
2084         GList       *form_field_mapping;
2085         EvRectangle  field_area;
2086         GdkRectangle view_area;
2087
2088         if (field->is_read_only)
2089                 return;
2090
2091         if (EV_IS_FORM_FIELD_BUTTON (field)) {
2092                 field_widget = ev_view_form_field_button_create_widget (view, field);
2093         } else if (EV_IS_FORM_FIELD_TEXT (field)) {
2094                 field_widget = ev_view_form_field_text_create_widget (view, field);
2095         } else if (EV_IS_FORM_FIELD_CHOICE (field)) {
2096                 field_widget = ev_view_form_field_choice_create_widget (view, field);
2097         } else if (EV_IS_FORM_FIELD_SIGNATURE (field)) {
2098                 /* TODO */
2099         }
2100
2101         /* Form field doesn't require a widget */
2102         if (!field_widget)
2103                 return;
2104
2105         g_object_set_data_full (G_OBJECT (field_widget), "form-field",
2106                                 g_object_ref (field),
2107                                 (GDestroyNotify)g_object_unref);
2108
2109         form_field_mapping = ev_pixbuf_cache_get_form_field_mapping (view->pixbuf_cache, field->page->index);
2110         ev_form_field_mapping_get_area (form_field_mapping, field, &field_area);
2111
2112         doc_rect_to_view_rect (view, field->page->index, &field_area, &view_area);
2113         view_area.x -= view->scroll_x;
2114         view_area.y -= view->scroll_y;
2115
2116         gtk_layout_put (GTK_LAYOUT (view), field_widget, view_area.x, view_area.y);
2117         gtk_widget_show (field_widget);
2118         gtk_widget_grab_focus (field_widget);
2119 }
2120
2121 /*** GtkWidget implementation ***/
2122
2123 static void
2124 ev_view_size_request_continuous_dual_page (EvView         *view,
2125                                            GtkRequisition *requisition)
2126 {
2127         int max_width;
2128         gint n_pages;
2129         GtkBorder border;
2130
2131         ev_page_cache_get_max_width (view->page_cache, view->rotation,
2132                                      view->scale, &max_width);
2133         compute_border (view, max_width, max_width, &border);
2134
2135         n_pages = ev_page_cache_get_n_pages (view->page_cache) + 1;
2136
2137         requisition->width = (max_width + border.left + border.right) * 2 + (view->spacing * 3);
2138         get_page_y_offset (view, n_pages, view->scale, &requisition->height);
2139
2140         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
2141                 requisition->width = 1;
2142         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
2143                 requisition->width = 1;
2144                 /* FIXME: This could actually be set on one page docs or docs
2145                  * with a strange aspect ratio. */
2146                 /* requisition->height = 1;*/
2147         }
2148 }
2149
2150 static void
2151 ev_view_size_request_continuous (EvView         *view,
2152                                  GtkRequisition *requisition)
2153 {
2154         int max_width;
2155         int n_pages;
2156         GtkBorder border;
2157
2158
2159         ev_page_cache_get_max_width (view->page_cache, view->rotation,
2160                                      view->scale, &max_width);
2161         n_pages = ev_page_cache_get_n_pages (view->page_cache);
2162         compute_border (view, max_width, max_width, &border);
2163
2164         requisition->width = max_width + (view->spacing * 2) + border.left + border.right;
2165         get_page_y_offset (view, n_pages, view->scale, &requisition->height);
2166
2167         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
2168                 requisition->width = 1;
2169         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
2170                 requisition->width = 1;
2171                 /* FIXME: This could actually be set on one page docs or docs
2172                  * with a strange aspect ratio. */
2173                 /* requisition->height = 1;*/
2174         }
2175 }
2176
2177 static void
2178 ev_view_size_request_dual_page (EvView         *view,
2179                                 GtkRequisition *requisition)
2180 {
2181         GtkBorder border;
2182         gint width, height;
2183
2184         /* Find the largest of the two. */
2185         ev_page_cache_get_size (view->page_cache,
2186                                 view->current_page,
2187                                 view->rotation,
2188                                 view->scale,
2189                                 &width, &height);
2190         if (view->current_page + 1 < ev_page_cache_get_n_pages (view->page_cache)) {
2191                 gint width_2, height_2;
2192                 ev_page_cache_get_size (view->page_cache,
2193                                         view->current_page + 1,
2194                                         view->rotation,
2195                                         view->scale,
2196                                         &width_2, &height_2);
2197                 if (width_2 > width) {
2198                         width = width_2;
2199                         height = height_2;
2200                 }
2201         }
2202         compute_border (view, width, height, &border);
2203
2204         requisition->width = ((width + border.left + border.right) * 2) +
2205                 (view->spacing * 3);
2206         requisition->height = (height + border.top + border.bottom) +
2207                 (view->spacing * 2);
2208
2209         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
2210                 requisition->width = 1;
2211         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
2212                 requisition->width = 1;
2213                 requisition->height = 1;
2214         }
2215 }
2216
2217 static void
2218 ev_view_size_request_single_page (EvView         *view,
2219                                   GtkRequisition *requisition)
2220 {
2221         GtkBorder border;
2222         gint width, height;
2223
2224         ev_page_cache_get_size (view->page_cache,
2225                                 view->current_page,
2226                                 view->rotation,
2227                                 view->scale,
2228                                 &width, &height);
2229         compute_border (view, width, height, &border);
2230
2231         requisition->width = width + border.left + border.right + (2 * view->spacing);
2232         requisition->height = height + border.top + border.bottom + (2 * view->spacing);
2233
2234         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
2235                 requisition->width = 1;
2236                 requisition->height = height + border.top + border.bottom + (2 * view->spacing);
2237         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
2238                 requisition->width = 1;
2239                 requisition->height = 1;
2240         }
2241 }
2242
2243 static void
2244 ev_view_size_request (GtkWidget      *widget,
2245                       GtkRequisition *requisition)
2246 {
2247         EvView *view = EV_VIEW (widget);
2248
2249         if (view->document == NULL) {
2250                 requisition->width = 1;
2251                 requisition->height = 1;
2252                 return;
2253         }
2254
2255         if (view->presentation) {
2256                 requisition->width = 1;
2257                 requisition->height = 1;
2258                 return;
2259         }
2260
2261         if (view->continuous && view->dual_page)
2262                 ev_view_size_request_continuous_dual_page (view, requisition);
2263         else if (view->continuous)
2264                 ev_view_size_request_continuous (view, requisition);
2265         else if (view->dual_page)
2266                 ev_view_size_request_dual_page (view, requisition);
2267         else
2268                 ev_view_size_request_single_page (view, requisition);
2269 }
2270
2271 static void
2272 ev_view_size_allocate (GtkWidget      *widget,
2273                        GtkAllocation  *allocation)
2274 {
2275         EvView *view = EV_VIEW (widget);
2276         GList  *children, *l;
2277
2278         GTK_WIDGET_CLASS (ev_view_parent_class)->size_allocate (widget, allocation);
2279
2280         if (view->sizing_mode == EV_SIZING_FIT_WIDTH ||
2281             view->sizing_mode == EV_SIZING_BEST_FIT) {
2282
2283                 g_signal_emit (view, signals[SIGNAL_ZOOM_INVALID], 0);
2284
2285                 ev_view_size_request (widget, &widget->requisition);
2286         }
2287
2288         view_set_adjustment_values (view, GTK_ORIENTATION_HORIZONTAL);
2289         view_set_adjustment_values (view, GTK_ORIENTATION_VERTICAL);
2290
2291         if (view->document)
2292                 view_update_range_and_current_page (view);
2293
2294         view->pending_scroll = SCROLL_TO_KEEP_POSITION;
2295         view->pending_resize = FALSE;
2296
2297         children = gtk_container_get_children (GTK_CONTAINER (widget));
2298         for (l = children; l && l->data; l = g_list_next (l)) {
2299                 EvFormField   *field;
2300                 EvRectangle    field_area;
2301                 GdkRectangle   view_area;
2302                 GList         *form_field_mapping;
2303                 GtkAllocation  child_allocation;
2304                 GtkRequisition child_requisition;
2305                 GtkWidget     *child = (GtkWidget *)l->data;
2306
2307                 field = g_object_get_data (G_OBJECT (child), "form-field");
2308                 if (!field)
2309                         continue;
2310
2311                 form_field_mapping = ev_pixbuf_cache_get_form_field_mapping (view->pixbuf_cache,
2312                                                                              field->page->index);
2313                 ev_form_field_mapping_get_area (form_field_mapping, field, &field_area);
2314
2315                 doc_rect_to_view_rect (view, field->page->index, &field_area, &view_area);
2316                 view_area.x -= view->scroll_x;
2317                 view_area.y -= view->scroll_y;
2318
2319                 gtk_widget_size_request (child, &child_requisition);
2320                 if (child_requisition.width != view_area.width ||
2321                     child_requisition.height != view_area.height)
2322                         gtk_widget_set_size_request (child, view_area.width, view_area.height);
2323
2324                 gtk_container_child_get (GTK_CONTAINER (widget),
2325                                          child,
2326                                          "x", &child_allocation.x,
2327                                          "y", &child_allocation.y,
2328                                          NULL);
2329                 if (child_allocation.x != view_area.x ||
2330                     child_allocation.y != view_area.y) {
2331                         gtk_layout_move (GTK_LAYOUT (widget), child, view_area.x, view_area.y);
2332                 }
2333         }
2334         g_list_free (children);
2335 }
2336
2337 static void
2338 ev_view_realize (GtkWidget *widget)
2339 {
2340         EvView *view = EV_VIEW (widget);
2341
2342         if (GTK_WIDGET_CLASS (ev_view_parent_class)->realize)
2343                 (* GTK_WIDGET_CLASS (ev_view_parent_class)->realize) (widget);
2344
2345         gdk_window_set_events (view->layout.bin_window,
2346                                (gdk_window_get_events (view->layout.bin_window) |
2347                                 GDK_EXPOSURE_MASK |
2348                                 GDK_BUTTON_PRESS_MASK |
2349                                 GDK_BUTTON_RELEASE_MASK |
2350                                 GDK_SCROLL_MASK |
2351                                 GDK_KEY_PRESS_MASK |
2352                                 GDK_POINTER_MOTION_MASK |
2353                                 GDK_POINTER_MOTION_HINT_MASK |
2354                                 GDK_ENTER_NOTIFY_MASK |
2355                                 GDK_LEAVE_NOTIFY_MASK));
2356
2357         if (view->presentation)
2358                 gdk_window_set_background (view->layout.bin_window, &widget->style->black);
2359         else
2360                 gdk_window_set_background (view->layout.bin_window, &widget->style->mid [GTK_STATE_NORMAL]);
2361 }
2362
2363 static gboolean
2364 ev_view_scroll_event (GtkWidget *widget, GdkEventScroll *event)
2365 {
2366         EvView *view = EV_VIEW (widget);
2367         guint state;
2368
2369         state = event->state & gtk_accelerator_get_default_mod_mask ();
2370
2371         if (state == GDK_CONTROL_MASK && view->presentation == FALSE) {
2372                 ev_view_set_sizing_mode (view, EV_SIZING_FREE);
2373
2374                 if (event->direction == GDK_SCROLL_UP ||
2375                     event->direction == GDK_SCROLL_LEFT) {
2376                         if (ev_view_can_zoom_in (view)) {
2377                                 ev_view_zoom_in (view);
2378                         }
2379                 } else {
2380                         if (ev_view_can_zoom_out (view)) {
2381                                 ev_view_zoom_out (view);
2382                         }
2383                 }
2384
2385                 return TRUE;
2386         }
2387
2388         view->jump_to_find_result = FALSE;
2389
2390         /* Shift+Wheel scrolls the in the perpendicular direction */
2391         if (state & GDK_SHIFT_MASK) {
2392                 if (event->direction == GDK_SCROLL_UP)
2393                         event->direction = GDK_SCROLL_LEFT;
2394                 else if (event->direction == GDK_SCROLL_LEFT)
2395                         event->direction = GDK_SCROLL_UP;
2396                 else if (event->direction == GDK_SCROLL_DOWN)
2397                         event->direction = GDK_SCROLL_RIGHT;
2398                 else if (event->direction == GDK_SCROLL_RIGHT)
2399                         event->direction = GDK_SCROLL_DOWN;
2400
2401                 event->state &= ~GDK_SHIFT_MASK;
2402                 state &= ~GDK_SHIFT_MASK;
2403         }
2404
2405         if (state == 0 && view->presentation) {
2406                 switch (event->direction) {
2407                         case GDK_SCROLL_DOWN:
2408                         case GDK_SCROLL_RIGHT:
2409                                 ev_view_next_page (view);
2410                                 break;
2411                         case GDK_SCROLL_UP:
2412                         case GDK_SCROLL_LEFT:
2413                                 ev_view_previous_page (view);
2414                                 break;
2415                 }
2416
2417                 return TRUE;
2418         }
2419
2420         return FALSE;
2421 }
2422
2423 static EvViewSelection *
2424 find_selection_for_page (EvView *view,
2425                          gint    page)
2426 {
2427         GList *list;
2428
2429         for (list = view->selection_info.selections; list != NULL; list = list->next) {
2430                 EvViewSelection *selection;
2431
2432                 selection = (EvViewSelection *) list->data;
2433
2434                 if (selection->page == page)
2435                         return selection;
2436         }
2437
2438         return NULL;
2439 }
2440
2441 static void
2442 draw_end_presentation_page (EvView       *view,
2443                             GdkRectangle *page_area)
2444 {
2445         PangoLayout *layout;
2446         PangoFontDescription *font_desc;
2447         gchar *markup;
2448         const gchar *text = _("End of presentation. Press Escape to exit.");
2449
2450         if (view->presentation_state != EV_PRESENTATION_END)
2451                 return;
2452
2453         layout = gtk_widget_create_pango_layout (GTK_WIDGET (view), NULL);
2454         markup = g_strdup_printf ("<span foreground=\"white\">%s</span>", text);
2455         pango_layout_set_markup (layout, markup, -1);
2456         g_free (markup);
2457
2458         font_desc = pango_font_description_new ();
2459         pango_font_description_set_size (font_desc, 16 * PANGO_SCALE);
2460         pango_layout_set_font_description (layout, font_desc);
2461
2462         gtk_paint_layout (GTK_WIDGET (view)->style,
2463                           view->layout.bin_window,
2464                           GTK_WIDGET_STATE (view),
2465                           FALSE,
2466                           page_area,
2467                           GTK_WIDGET (view),
2468                           NULL,
2469                           page_area->x + 15,
2470                           page_area->y + 15,
2471                           layout);
2472
2473         pango_font_description_free (font_desc);
2474         g_object_unref (layout);
2475 }
2476
2477 static gboolean
2478 ev_view_expose_event (GtkWidget      *widget,
2479                       GdkEventExpose *event)
2480 {
2481         EvView  *view = EV_VIEW (widget);
2482         cairo_t *cr;
2483         gint     i;
2484
2485         if (view->animation && ev_transition_animation_ready (view->animation)) {
2486                 GdkRectangle page_area;
2487                 GtkBorder    border;
2488
2489                 if (get_page_extents (view, view->current_page, &page_area, &border)) {
2490                         cr = gdk_cairo_create (view->layout.bin_window);
2491
2492                         /* normalize to x=0, y=0 */
2493                         cairo_translate (cr, page_area.x, page_area.y);
2494                         page_area.x = page_area.y = 0;
2495
2496                         ev_transition_animation_paint (view->animation, cr, page_area);
2497                         cairo_destroy (cr);
2498                 }
2499
2500                 return TRUE;
2501         }
2502
2503         if (view->presentation) {
2504                 switch (view->presentation_state) {
2505                         case EV_PRESENTATION_END: {
2506                                 GdkRectangle area = {0};
2507
2508                                 area.width = widget->allocation.width;
2509                                 area.height = widget->allocation.height;
2510
2511                                 draw_end_presentation_page (view, &area);
2512                         }
2513                                 return FALSE;
2514                         case EV_PRESENTATION_BLACK:
2515                         case EV_PRESENTATION_WHITE:
2516                                 return FALSE;
2517                         case EV_PRESENTATION_NORMAL:
2518                         default:
2519                                 break;
2520                 }
2521         } else if (view->loading) {
2522                 GdkRectangle area = {0};
2523
2524                 area.width = widget->allocation.width;
2525                 area.height = widget->allocation.height;
2526
2527                 draw_loading_text (view,
2528                                    &area,
2529                                    &(event->area));
2530         }
2531
2532         if (view->document == NULL)
2533                 return FALSE;
2534
2535         cr = gdk_cairo_create (view->layout.bin_window);
2536
2537         for (i = view->start_page; i <= view->end_page; i++) {
2538                 GdkRectangle page_area;
2539                 GtkBorder border;
2540                 gboolean page_ready = TRUE;
2541
2542                 if (!get_page_extents (view, i, &page_area, &border))
2543                         continue;
2544
2545                 page_area.x -= view->scroll_x;
2546                 page_area.y -= view->scroll_y;
2547
2548                 draw_one_page (view, i, cr, &page_area, &border, &(event->area), &page_ready);
2549
2550                 if (page_ready && EV_IS_DOCUMENT_FIND (view->document) && view->highlight_find_results)
2551                         highlight_find_results (view, i);
2552         }
2553
2554         cairo_destroy (cr);
2555
2556         if (GTK_WIDGET_CLASS (ev_view_parent_class)->expose_event)
2557                 (* GTK_WIDGET_CLASS (ev_view_parent_class)->expose_event) (widget, event);
2558
2559         return FALSE;
2560 }
2561
2562 static gboolean
2563 ev_view_do_popup_menu (EvView *view,
2564                        gdouble x,
2565                        gdouble y)
2566 {
2567         EvLink  *link;
2568         EvImage *image;
2569
2570         image = ev_view_get_image_at_location (view, x, y);
2571         if (image) {
2572                 g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, image);
2573                 return TRUE;
2574         }
2575
2576         link = ev_view_get_link_at_location (view, x, y);
2577         if (link) {
2578                 g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, link);
2579                 return TRUE;
2580         }
2581
2582         g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, NULL);
2583
2584         return TRUE;
2585 }
2586
2587 static gboolean
2588 ev_view_popup_menu (GtkWidget *widget)
2589 {
2590         gint x, y;
2591
2592         gtk_widget_get_pointer (widget, &x, &y);
2593         return ev_view_do_popup_menu (EV_VIEW (widget), x, y);
2594 }
2595
2596 #if GTK_CHECK_VERSION (2, 11, 7)
2597 static void
2598 get_link_area (EvView       *view,
2599                gint          x,
2600                gint          y,
2601                EvLink       *link,
2602                GdkRectangle *area)
2603 {
2604         EvRectangle  ev_rect;
2605         GList       *link_mapping;
2606         gint         page;
2607         gint         x_offset = 0, y_offset = 0;
2608
2609         x += view->scroll_x;
2610         y += view->scroll_y;
2611
2612         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
2613
2614         link_mapping = ev_pixbuf_cache_get_link_mapping (view->pixbuf_cache, page);
2615         ev_link_mapping_get_area (link_mapping, link, &ev_rect);
2616
2617         doc_rect_to_view_rect (view, page, &ev_rect, area);
2618         area->y -= view->scroll_y ;
2619 }
2620
2621 static gboolean
2622 ev_view_query_tooltip (GtkWidget         *widget,
2623                        gint               x,
2624                        gint               y,
2625                        gboolean           keyboard_tip,
2626                        GtkTooltip        *tooltip)
2627 {
2628         EvView *view = EV_VIEW (widget);
2629         EvLink *link;
2630         gchar  *text;
2631
2632         link = ev_view_get_link_at_location (view, x, y);
2633         if (!link)
2634                 return FALSE;
2635
2636         text = tip_from_link (view, link);
2637         if (text && g_utf8_validate (text, -1, NULL)) {
2638                 GdkRectangle link_area;
2639
2640                 get_link_area (view, x, y, link, &link_area);
2641                 gtk_tooltip_set_text (tooltip, text);
2642                 gtk_tooltip_set_tip_area (tooltip, &link_area);
2643         }
2644         g_free (text);
2645
2646         return TRUE;
2647 }
2648 #endif /* GTK_CHECK_VERSION (2, 11, 7) */
2649
2650 static void
2651 start_selection_for_event (EvView         *view,
2652                            GdkEventButton *event)
2653 {
2654         EvSelectionStyle style;
2655
2656         clear_selection (view);
2657
2658         view->selection_info.start.x = event->x + view->scroll_x;
2659         view->selection_info.start.y = event->y + view->scroll_y;
2660
2661         switch (event->type) {
2662                 case GDK_2BUTTON_PRESS:
2663                         style = EV_SELECTION_STYLE_WORD;
2664                         break;
2665                 case GDK_3BUTTON_PRESS:
2666                         style = EV_SELECTION_STYLE_LINE;
2667                         break;
2668                 default:
2669                         style = EV_SELECTION_STYLE_GLYPH;
2670                         break;
2671         }
2672
2673         view->selection_info.style = style;
2674 }
2675
2676 static gboolean
2677 ev_view_button_press_event (GtkWidget      *widget,
2678                             GdkEventButton *event)
2679 {
2680         EvView *view = EV_VIEW (widget);
2681
2682         if (!view->document)
2683                 return FALSE;
2684
2685         if (!GTK_WIDGET_HAS_FOCUS (widget)) {
2686                 gtk_widget_grab_focus (widget);
2687         }
2688
2689         view->pressed_button = event->button;
2690         view->selection_info.in_drag = FALSE;
2691
2692         if (view->scroll_info.autoscrolling)
2693                 return TRUE;
2694
2695         switch (event->button) {
2696                 case 1: {
2697                         EvImage *image;
2698                         EvFormField *field;
2699
2700                         if (EV_IS_SELECTION (view->document) && view->selection_info.selections) {
2701                                 if (event->type == GDK_3BUTTON_PRESS) {
2702                                         start_selection_for_event (view, event);
2703                                 } else if (location_in_selected_text (view,
2704                                                                event->x + view->scroll_x,
2705                                                                event->y + view->scroll_y)) {
2706                                         view->selection_info.in_drag = TRUE;
2707                                 } else {
2708                                         start_selection_for_event (view, event);
2709                                 }
2710
2711                                 gtk_widget_queue_draw (widget);
2712                         } else if ((field = ev_view_get_form_field_at_location (view, event->x, event->y))) {
2713                                 ev_view_remove_all (view);
2714                                 ev_view_handle_form_field (view, field, event->x, event->y);
2715                         } else if (!location_in_text (view, event->x + view->scroll_x, event->y + view->scroll_y) &&
2716                                    (image = ev_view_get_image_at_location (view, event->x, event->y))) {
2717                                 if (view->image_dnd_info.image)
2718                                         g_object_unref (view->image_dnd_info.image);
2719                                 view->image_dnd_info.image = g_object_ref (image);
2720                                 view->image_dnd_info.in_drag = TRUE;
2721
2722                                 view->image_dnd_info.start.x = event->x + view->scroll_x;
2723                                 view->image_dnd_info.start.y = event->y + view->scroll_y;
2724                         } else {
2725                                 ev_view_remove_all (view);
2726
2727                                 if (EV_IS_SELECTION (view->document))
2728                                         start_selection_for_event (view, event);
2729                         }
2730                 }
2731                         return TRUE;
2732                 case 2:
2733                         /* use root coordinates as reference point because
2734                          * scrolling changes window relative coordinates */
2735                         view->drag_info.start.x = event->x_root;
2736                         view->drag_info.start.y = event->y_root;
2737                         view->drag_info.hadj = gtk_adjustment_get_value (view->hadjustment);
2738                         view->drag_info.vadj = gtk_adjustment_get_value (view->vadjustment);
2739
2740                         ev_view_set_cursor (view, EV_VIEW_CURSOR_DRAG);
2741
2742                         return TRUE;
2743                 case 3:
2744                         view->scroll_info.start_y = event->y;
2745                         return ev_view_do_popup_menu (view, event->x, event->y);
2746         }
2747
2748         return FALSE;
2749 }
2750
2751 static void
2752 ev_view_remove_all (EvView *view)
2753 {
2754         GList *children, *child;
2755
2756         children = gtk_container_get_children (GTK_CONTAINER (view));
2757         for (child = children; child && child->data; child = g_list_next (child)) {
2758                 gtk_container_remove (GTK_CONTAINER (view),
2759                                       GTK_WIDGET (child->data));
2760         }
2761         g_list_free (children);
2762 }
2763
2764 /*** Drag and Drop ***/
2765 static void
2766 ev_view_drag_data_get (GtkWidget        *widget,
2767                        GdkDragContext   *context,
2768                        GtkSelectionData *selection_data,
2769                        guint             info,
2770                        guint             time)
2771 {
2772         EvView *view = EV_VIEW (widget);
2773
2774         switch (info) {
2775                 case TARGET_DND_TEXT:
2776                         if (EV_IS_SELECTION (view->document) &&
2777                             view->selection_info.selections) {
2778                                 gchar *text;
2779
2780                                 text = get_selected_text (view);
2781                                 gtk_selection_data_set_text (selection_data,
2782                                                              text,
2783                                                              strlen (text));
2784                                 g_free (text);
2785                         }
2786                         break;
2787                 case TARGET_DND_IMAGE:
2788                         if (view->image_dnd_info.image) {
2789                                 GdkPixbuf *pixbuf;
2790
2791                                 ev_document_doc_mutex_lock ();
2792                                 pixbuf = ev_document_images_get_image (EV_DOCUMENT_IMAGES (view->document),
2793                                                                        view->image_dnd_info.image);
2794                                 ev_document_doc_mutex_unlock ();
2795
2796                                 gtk_selection_data_set_pixbuf (selection_data, pixbuf);
2797                                 g_object_unref (pixbuf);
2798                         }
2799                         break;
2800                 case TARGET_DND_URI:
2801                         if (view->image_dnd_info.image) {
2802                                 GdkPixbuf   *pixbuf;
2803                                 const gchar *tmp_uri;
2804                                 gchar      **uris;
2805
2806                                 ev_document_doc_mutex_lock ();
2807                                 pixbuf = ev_document_images_get_image (EV_DOCUMENT_IMAGES (view->document),
2808                                                                        view->image_dnd_info.image);
2809                                 ev_document_doc_mutex_unlock ();
2810
2811                                 tmp_uri = ev_image_save_tmp (view->image_dnd_info.image, pixbuf);
2812                                 g_object_unref (pixbuf);
2813
2814                                 uris = g_new0 (gchar *, 2);
2815                                 uris[0] = (gchar *)tmp_uri;
2816
2817                                 gtk_selection_data_set_uris (selection_data, uris);
2818
2819                                 /* g_free instead of g_strfreev since tmp_uri is const */
2820                                 g_free (uris);
2821                         }
2822         }
2823 }
2824
2825 static gboolean
2826 ev_view_drag_motion (GtkWidget      *widget,
2827                      GdkDragContext *context,
2828                      gint            x,
2829                      gint            y,
2830                      guint           time)
2831 {
2832         if (gtk_drag_get_source_widget (context) == widget)
2833                 gdk_drag_status (context, 0, time);
2834         else
2835                 gdk_drag_status (context, context->suggested_action, time);
2836
2837         return TRUE;
2838 }
2839
2840 static void
2841 ev_view_drag_data_received (GtkWidget          *widget,
2842                             GdkDragContext     *context,
2843                             gint                x,
2844                             gint                y,
2845                             GtkSelectionData   *selection_data,
2846                             guint               info,
2847                             guint               time)
2848 {
2849         gchar  **uris;
2850         gint     i = 0;
2851         GSList  *uri_list = NULL;
2852
2853         uris = gtk_selection_data_get_uris (selection_data);
2854         if (!uris) {
2855                 gtk_drag_finish (context, FALSE, FALSE, time);
2856                 return;
2857         }
2858
2859         for (i = 0; uris[i]; i++) {
2860                 uri_list = g_slist_prepend (uri_list, (gpointer) uris[i]);
2861         }
2862
2863         ev_application_open_uri_list (EV_APP, uri_list,
2864                                       gtk_widget_get_screen (widget),
2865                                       0);
2866         gtk_drag_finish (context, TRUE, FALSE, time);
2867
2868         g_strfreev (uris);
2869         g_slist_free (uri_list);
2870 }
2871
2872
2873 static gboolean
2874 selection_update_idle_cb (EvView *view)
2875 {
2876         compute_selections (view,
2877                             view->selection_info.style,
2878                             &view->selection_info.start,
2879                             &view->motion);
2880         view->selection_update_id = 0;
2881         return FALSE;
2882 }
2883
2884 static gboolean
2885 selection_scroll_timeout_cb (EvView *view)
2886 {
2887         gint x, y, shift = 0;
2888         GtkWidget *widget = GTK_WIDGET (view);
2889
2890         gtk_widget_get_pointer (widget, &x, &y);
2891
2892         if (y > widget->allocation.height) {
2893                 shift = (y - widget->allocation.height) / 2;
2894         } else if (y < 0) {
2895                 shift = y / 2;
2896         }
2897
2898         if (shift)
2899                 gtk_adjustment_set_value (view->vadjustment,
2900                                           CLAMP (view->vadjustment->value + shift,
2901                                           view->vadjustment->lower,
2902                                           view->vadjustment->upper -
2903                                           view->vadjustment->page_size));
2904
2905         if (x > widget->allocation.width) {
2906                 shift = (x - widget->allocation.width) / 2;
2907         } else if (x < 0) {
2908                 shift = x / 2;
2909         }
2910
2911         if (shift)
2912                 gtk_adjustment_set_value (view->hadjustment,
2913                                           CLAMP (view->hadjustment->value + shift,
2914                                           view->hadjustment->lower,
2915                                           view->hadjustment->upper -
2916                                           view->hadjustment->page_size));
2917
2918         return TRUE;
2919 }
2920
2921 static gboolean
2922 ev_view_drag_update_momentum (EvView *view)
2923 {
2924         int i;
2925         if (!view->drag_info.in_drag)
2926                 return FALSE;
2927
2928         for (i = DRAG_HISTORY - 1; i > 0; i--) {
2929                 view->drag_info.buffer[i].x = view->drag_info.buffer[i-1].x;
2930                 view->drag_info.buffer[i].y = view->drag_info.buffer[i-1].y;
2931         }
2932
2933         /* Momentum is a moving average of 10ms granularity over
2934          * the last 100ms with each 10ms stored in buffer.
2935          */
2936
2937         view->drag_info.momentum.x = (view->drag_info.buffer[DRAG_HISTORY - 1].x - view->drag_info.buffer[0].x);
2938         view->drag_info.momentum.y = (view->drag_info.buffer[DRAG_HISTORY - 1].y - view->drag_info.buffer[0].y);
2939
2940         return TRUE;
2941 }
2942
2943 static gboolean
2944 ev_view_scroll_drag_release (EvView *view)
2945 {
2946         gdouble dhadj_value, dvadj_value;
2947         gdouble oldhadjustment, oldvadjustment;
2948
2949         view->drag_info.momentum.x /= 1.2;
2950         view->drag_info.momentum.y /= 1.2; /* Alter these constants to change "friction" */
2951
2952         dhadj_value = view->hadjustment->page_size *
2953                       (gdouble)view->drag_info.momentum.x / GTK_WIDGET (view)->allocation.width;
2954         dvadj_value = view->vadjustment->page_size *
2955                       (gdouble)view->drag_info.momentum.y / GTK_WIDGET (view)->allocation.height;
2956
2957         oldhadjustment = gtk_adjustment_get_value (view->hadjustment);
2958         oldvadjustment = gtk_adjustment_get_value (view->vadjustment);
2959
2960         if (((oldhadjustment + dhadj_value) > (view->hadjustment->upper - view->hadjustment->page_size)) ||
2961            ((oldhadjustment + dhadj_value) < 0))
2962                 view->drag_info.momentum.x *= -0.5; /* 0.5 rather than 1 means the edges absorb some momentum */
2963         if (((oldvadjustment + dvadj_value) > (view->vadjustment->upper - view->vadjustment->page_size)) ||
2964            ((oldvadjustment + dvadj_value) < 0))
2965                 view->drag_info.momentum.y *= -0.5;
2966
2967         gtk_adjustment_set_value (view->hadjustment,
2968                                 MIN (oldhadjustment + dhadj_value,
2969                                 view->hadjustment->upper - view->hadjustment->page_size));
2970         gtk_adjustment_set_value (view->vadjustment,
2971                                 MIN (oldvadjustment + dvadj_value,
2972                                 view->vadjustment->upper - view->vadjustment->page_size));
2973
2974         if (((view->drag_info.momentum.x < 1) && (view->drag_info.momentum.x > -1)) &&
2975            ((view->drag_info.momentum.y < 1) && (view->drag_info.momentum.y > -1)))
2976                 return FALSE;
2977         else
2978                 return TRUE;
2979 }
2980
2981 static gboolean
2982 ev_view_motion_notify_event (GtkWidget      *widget,
2983                              GdkEventMotion *event)
2984 {
2985         EvView *view = EV_VIEW (widget);
2986         gint x, y;
2987
2988         if (!view->document)
2989                 return FALSE;
2990
2991
2992         if (event->is_hint || event->window != view->layout.bin_window) {
2993             gtk_widget_get_pointer (widget, &x, &y);
2994         } else {
2995             x = event->x;
2996             y = event->y;
2997         }
2998
2999         if (view->scroll_info.autoscrolling) {
3000                 view->scroll_info.last_y = y;
3001                 return TRUE;
3002         }
3003
3004         if (view->selection_info.in_drag) {
3005                 if (gtk_drag_check_threshold (widget,
3006                                               view->selection_info.start.x,
3007                                               view->selection_info.start.y,
3008                                               x, y)) {
3009                         GtkTargetList *target_list = gtk_target_list_new (NULL, 0);
3010
3011                         gtk_target_list_add_text_targets (target_list, TARGET_DND_TEXT);
3012
3013                         gtk_drag_begin (widget, target_list,
3014                                         GDK_ACTION_COPY,
3015                                         1, (GdkEvent *)event);
3016
3017                         view->selection_info.in_drag = FALSE;
3018
3019                         gtk_target_list_unref (target_list);
3020
3021                         return TRUE;
3022                 }
3023         } else if (view->image_dnd_info.in_drag) {
3024                 if (gtk_drag_check_threshold (widget,
3025                                               view->selection_info.start.x,
3026                                               view->selection_info.start.y,
3027                                               x, y)) {
3028                         GtkTargetList *target_list = gtk_target_list_new (NULL, 0);
3029
3030                         gtk_target_list_add_uri_targets (target_list, TARGET_DND_URI);
3031                         gtk_target_list_add_image_targets (target_list, TARGET_DND_IMAGE, TRUE);
3032
3033                         gtk_drag_begin (widget, target_list,
3034                                         GDK_ACTION_COPY,
3035                                         1, (GdkEvent *)event);
3036
3037                         view->image_dnd_info.in_drag = FALSE;
3038
3039                         gtk_target_list_unref (target_list);
3040
3041                         return TRUE;
3042                 }
3043         }
3044
3045         /* For the Evince 0.4.x release, we limit selection to un-rotated
3046          * documents only.
3047          */
3048         if (view->pressed_button == 1 && view->rotation == 0) {
3049
3050                 /* Schedule timeout to scroll during selection and additionally
3051                  * scroll once to allow arbitrary speed. */
3052                 if (!view->selection_scroll_id)
3053                     view->selection_scroll_id = g_timeout_add (SCROLL_TIME, (GSourceFunc)selection_scroll_timeout_cb, view);
3054                 else
3055                     selection_scroll_timeout_cb (view);
3056
3057                 view->selection_info.in_selection = TRUE;
3058                 view->motion.x = x + view->scroll_x;
3059                 view->motion.y = y + view->scroll_y;
3060
3061                 /* Queue an idle to handle the motion.  We do this because
3062                  * handling any selection events in the motion could be slower
3063                  * than new motion events reach us.  We always put it in the
3064                  * idle to make sure we catch up and don't visibly lag the
3065                  * mouse. */
3066                 if (!view->selection_update_id)
3067                         view->selection_update_id = g_idle_add ((GSourceFunc)selection_update_idle_cb, view);
3068
3069                 return TRUE;
3070         } else if (view->pressed_button == 2) {
3071                 if (!view->drag_info.in_drag) {
3072                         gboolean start;
3073                         int i;
3074
3075                         start = gtk_drag_check_threshold (widget,
3076                                                           view->drag_info.start.x,
3077                                                           view->drag_info.start.y,
3078                                                           event->x_root,
3079                                                           event->y_root);
3080                         view->drag_info.in_drag = start;
3081                         view->drag_info.drag_timeout_id = g_timeout_add (10,
3082                                 (GSourceFunc)ev_view_drag_update_momentum, view);
3083                         /* Set 100 to choose how long it takes to build up momentum */
3084                         /* Clear out previous momentum info: */
3085                         for (i = 0; i < DRAG_HISTORY; i++) {
3086                                 view->drag_info.buffer[i].x = event->x;
3087                                 view->drag_info.buffer[i].y = event->y;
3088                         }
3089                         view->drag_info.momentum.x = 0;
3090                         view->drag_info.momentum.y = 0;
3091                 }
3092
3093                 if (view->drag_info.in_drag) {
3094                         int dx, dy;
3095                         gdouble dhadj_value, dvadj_value;
3096
3097                         view->drag_info.buffer[0].x = event->x;
3098                         view->drag_info.buffer[0].y = event->y;
3099
3100                         dx = event->x_root - view->drag_info.start.x;
3101                         dy = event->y_root - view->drag_info.start.y;
3102
3103                         dhadj_value = view->hadjustment->page_size *
3104                                       (gdouble)dx / widget->allocation.width;
3105                         dvadj_value = view->vadjustment->page_size *
3106                                       (gdouble)dy / widget->allocation.height;
3107
3108                         /* clamp scrolling to visible area */
3109                         gtk_adjustment_set_value (view->hadjustment,
3110                                                   MIN(view->drag_info.hadj - dhadj_value,
3111                                                       view->hadjustment->upper -
3112                                                       view->hadjustment->page_size));
3113                         gtk_adjustment_set_value (view->vadjustment,
3114                                                   MIN(view->drag_info.vadj - dvadj_value,
3115                                                       view->vadjustment->upper -
3116                                                       view->vadjustment->page_size));
3117
3118                         return TRUE;
3119                 }
3120         } else if (view->pressed_button <= 0) {
3121                 ev_view_handle_cursor_over_xy (view, x, y);
3122                 return TRUE;
3123         }
3124
3125         return FALSE;
3126 }
3127
3128 static gboolean
3129 ev_view_button_release_event (GtkWidget      *widget,
3130                               GdkEventButton *event)
3131 {
3132         EvView *view = EV_VIEW (widget);
3133         EvLink *link = NULL;
3134
3135         view->image_dnd_info.in_drag = FALSE;
3136
3137         if (view->scroll_info.autoscrolling) {
3138                 ev_view_autoscroll_stop (view);
3139                 view->pressed_button = -1;
3140
3141                 return TRUE;
3142         }
3143
3144         if (view->drag_info.in_drag) {
3145                 view->drag_info.release_timeout_id =
3146                         g_timeout_add (20,
3147                                        (GSourceFunc)ev_view_scroll_drag_release, view);
3148         }
3149
3150         if (view->document && !view->drag_info.in_drag && view->pressed_button != 3) {
3151                 link = ev_view_get_link_at_location (view, event->x, event->y);
3152         }
3153
3154         view->drag_info.in_drag = FALSE;
3155
3156         if (view->pressed_button == 2) {
3157                 ev_view_handle_cursor_over_xy (view, event->x, event->y);
3158         }
3159
3160         view->pressed_button = -1;
3161
3162         if (view->selection_scroll_id) {
3163             g_source_remove (view->selection_scroll_id);
3164             view->selection_scroll_id = 0;
3165         }
3166         if (view->selection_update_id) {
3167             g_source_remove (view->selection_update_id);
3168             view->selection_update_id = 0;
3169         }
3170
3171         if (!view->selection_info.in_selection &&
3172             view->selection_info.style != EV_SELECTION_STYLE_GLYPH) {
3173                 compute_selections (view,
3174                                     view->selection_info.style,
3175                                     &(view->selection_info.start),
3176                                     &(view->selection_info.start));
3177         }
3178
3179         if (view->selection_info.selections) {
3180                 clear_link_selected (view);
3181                 ev_view_update_primary_selection (view);
3182
3183                 if (view->selection_info.in_drag) {
3184                         clear_selection (view);
3185                         gtk_widget_queue_draw (widget);
3186                 }
3187
3188                 view->selection_info.in_drag = FALSE;
3189         } else if (link) {
3190                 if (event->button == 2) {
3191                         EvLinkAction    *action;
3192                         EvLinkActionType type;
3193
3194                         action = ev_link_get_action (link);
3195                         if (!action)
3196                                 return FALSE;
3197
3198                         type = ev_link_action_get_action_type (action);
3199                         if (type == EV_LINK_ACTION_TYPE_GOTO_DEST) {
3200                                 g_signal_emit (view,
3201                                                signals[SIGNAL_EXTERNAL_LINK],
3202                                                0, action);
3203                         }
3204                 } else {
3205                         ev_view_handle_link (view, link);
3206                 }
3207         } else if (view->presentation) {
3208                 switch (event->button) {
3209                         case 1:
3210                                 ev_view_next_page (view);
3211                                 return TRUE;
3212                         case 3:
3213                                 ev_view_previous_page (view);
3214                                 return TRUE;
3215                 }
3216         }
3217
3218         return FALSE;
3219 }
3220
3221 /* Goto Window */
3222 /* Cut and paste from gtkwindow.c */
3223 static void
3224 send_focus_change (GtkWidget *widget,
3225                    gboolean   in)
3226 {
3227         GdkEvent *fevent = gdk_event_new (GDK_FOCUS_CHANGE);
3228
3229         g_object_ref (widget);
3230
3231         if (in)
3232                 GTK_WIDGET_SET_FLAGS (widget, GTK_HAS_FOCUS);
3233         else
3234                 GTK_WIDGET_UNSET_FLAGS (widget, GTK_HAS_FOCUS);
3235
3236         fevent->focus_change.type = GDK_FOCUS_CHANGE;
3237         fevent->focus_change.window = g_object_ref (widget->window);
3238         fevent->focus_change.in = in;
3239
3240         gtk_widget_event (widget, fevent);
3241
3242         g_object_notify (G_OBJECT (widget), "has-focus");
3243
3244         g_object_unref (widget);
3245         gdk_event_free (fevent);
3246 }
3247
3248 static void
3249 ev_view_goto_window_hide (EvView *view)
3250 {
3251         /* send focus-in event */
3252         send_focus_change (view->goto_entry, FALSE);
3253         gtk_widget_hide (view->goto_window);
3254         gtk_entry_set_text (GTK_ENTRY (view->goto_entry), "");
3255 }
3256
3257 static gboolean
3258 ev_view_goto_window_delete_event (GtkWidget   *widget,
3259                                   GdkEventAny *event,
3260                                   EvView      *view)
3261 {
3262         ev_view_goto_window_hide (view);
3263
3264         return TRUE;
3265 }
3266
3267 static gboolean
3268 key_is_numeric (guint keyval)
3269 {
3270         return ((keyval >= GDK_0 && keyval <= GDK_9) ||
3271                 (keyval >= GDK_KP_0 && keyval <= GDK_KP_9));
3272 }
3273
3274 static gboolean
3275 ev_view_goto_window_key_press_event (GtkWidget   *widget,
3276                                      GdkEventKey *event,
3277                                      EvView      *view)
3278 {
3279         switch (event->keyval) {
3280                 case GDK_Escape:
3281                 case GDK_Tab:
3282                 case GDK_KP_Tab:
3283                 case GDK_ISO_Left_Tab:
3284                         ev_view_goto_window_hide (view);
3285                         return TRUE;
3286                 case GDK_Return:
3287                 case GDK_KP_Enter:
3288                 case GDK_ISO_Enter:
3289                 case GDK_BackSpace:
3290                 case GDK_Delete:
3291                         return FALSE;
3292                 default:
3293                         if (!key_is_numeric (event->keyval))
3294                                 return TRUE;
3295         }
3296
3297         return FALSE;
3298 }
3299
3300 static gboolean
3301 ev_view_goto_window_button_press_event (GtkWidget      *widget,
3302                                         GdkEventButton *event,
3303                                         EvView         *view)
3304 {
3305         ev_view_goto_window_hide (view);
3306
3307         return TRUE;
3308 }
3309
3310 static void
3311 ev_view_goto_entry_activate (GtkEntry *entry,
3312                              EvView   *view)
3313 {
3314         const gchar *text;
3315         gint         page;
3316
3317         text = gtk_entry_get_text (entry);
3318         page = atoi (text) - 1;
3319
3320         ev_view_goto_window_hide (view);
3321
3322         if (page >= 0 &&
3323             page < ev_page_cache_get_n_pages (view->page_cache))
3324                 ev_page_cache_set_current_page (view->page_cache, page);
3325 }
3326
3327 static void
3328 ev_view_goto_window_create (EvView *view)
3329 {
3330         GtkWidget *frame, *hbox, *toplevel, *label;
3331
3332         toplevel = gtk_widget_get_toplevel (GTK_WIDGET (view));
3333
3334         if (view->goto_window) {
3335                 if (GTK_WINDOW (toplevel)->group)
3336                         gtk_window_group_add_window (GTK_WINDOW (toplevel)->group,
3337                                                      GTK_WINDOW (view->goto_window));
3338                 else if (GTK_WINDOW (view->goto_window)->group)
3339                         gtk_window_group_remove_window (GTK_WINDOW (view->goto_window)->group,
3340                                                         GTK_WINDOW (view->goto_window));
3341                 return;
3342         }
3343
3344         view->goto_window = gtk_window_new (GTK_WINDOW_POPUP);
3345
3346         if (GTK_WINDOW (toplevel)->group)
3347                 gtk_window_group_add_window (GTK_WINDOW (toplevel)->group,
3348                                              GTK_WINDOW (view->goto_window));
3349
3350         gtk_window_set_modal (GTK_WINDOW (view->goto_window), TRUE);
3351
3352         g_signal_connect (view->goto_window, "delete_event",
3353                           G_CALLBACK (ev_view_goto_window_delete_event),
3354                           view);
3355         g_signal_connect (view->goto_window, "key_press_event",
3356                           G_CALLBACK (ev_view_goto_window_key_press_event),
3357                           view);
3358         g_signal_connect (view->goto_window, "button_press_event",
3359                           G_CALLBACK (ev_view_goto_window_button_press_event),
3360                           view);
3361
3362         frame = gtk_frame_new (NULL);
3363         gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_ETCHED_IN);
3364         gtk_container_add (GTK_CONTAINER (view->goto_window), frame);
3365         gtk_widget_show (frame);
3366
3367         hbox = gtk_hbox_new (FALSE, 0);
3368         gtk_container_set_border_width (GTK_CONTAINER (hbox), 3);
3369         gtk_container_add (GTK_CONTAINER (frame), hbox);
3370         gtk_widget_show (hbox);
3371
3372         label = gtk_label_new(_("Jump to page:"));
3373         gtk_box_pack_start (GTK_BOX (hbox), label, TRUE, TRUE, 3);
3374         gtk_widget_show (label);
3375         gtk_widget_realize (label);
3376
3377         view->goto_entry = gtk_entry_new ();
3378         g_signal_connect (view->goto_entry, "activate",
3379                           G_CALLBACK (ev_view_goto_entry_activate),
3380                           view);
3381         gtk_box_pack_start_defaults (GTK_BOX (hbox), view->goto_entry);
3382         gtk_widget_show (view->goto_entry);
3383         gtk_widget_realize (view->goto_entry);
3384 }
3385
3386 static void
3387 ev_view_goto_entry_grab_focus (EvView *view)
3388 {
3389         GtkWidgetClass *entry_parent_class;
3390
3391         entry_parent_class = g_type_class_peek_parent (GTK_ENTRY_GET_CLASS (view->goto_entry));
3392         (entry_parent_class->grab_focus) (view->goto_entry);
3393
3394         send_focus_change (view->goto_entry, TRUE);
3395 }
3396
3397 static void
3398 ev_view_goto_window_send_key_event (EvView   *view,
3399                                     GdkEvent *event)
3400 {
3401         GdkEventKey *new_event;
3402         GdkScreen   *screen;
3403
3404         /* Move goto window off screen */
3405         screen = gtk_widget_get_screen (GTK_WIDGET (view));
3406         gtk_window_move (GTK_WINDOW (view->goto_window),
3407                          gdk_screen_get_width (screen) + 1,
3408                          gdk_screen_get_height (screen) + 1);
3409         gtk_widget_show (view->goto_window);
3410
3411         new_event = (GdkEventKey *) gdk_event_copy (event);
3412         g_object_unref (new_event->window);
3413         new_event->window = g_object_ref (view->goto_window->window);
3414         gtk_widget_realize (view->goto_window);
3415
3416         gtk_widget_event (view->goto_window, (GdkEvent *)new_event);
3417         gdk_event_free ((GdkEvent *)new_event);
3418         gtk_widget_hide (view->goto_window);
3419 }
3420
3421 static gboolean
3422 ev_view_key_press_event (GtkWidget   *widget,
3423                          GdkEventKey *event)
3424 {
3425         EvView *view = EV_VIEW (widget);
3426         EvPresentationState current;
3427
3428         if (!view->document)
3429                 return FALSE;
3430
3431         if (!view->presentation ||
3432             view->presentation_state == EV_PRESENTATION_END)
3433                 return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
3434
3435
3436         current = view->presentation_state;
3437
3438         switch (event->keyval) {
3439                 case GDK_b:
3440                 case GDK_B:
3441                 case GDK_period:
3442                 case GDK_KP_Decimal:
3443                         view->presentation_state =
3444                                 (view->presentation_state == EV_PRESENTATION_BLACK) ?
3445                                 EV_PRESENTATION_NORMAL : EV_PRESENTATION_BLACK;
3446                         break;
3447                 case GDK_w:
3448                 case GDK_W:
3449                         view->presentation_state =
3450                                 (view->presentation_state == EV_PRESENTATION_WHITE) ?
3451                                 EV_PRESENTATION_NORMAL : EV_PRESENTATION_WHITE;
3452                         break;
3453                 default:
3454                         if (view->presentation_state == EV_PRESENTATION_BLACK ||
3455                             view->presentation_state == EV_PRESENTATION_WHITE) {
3456                                 view->presentation_state = EV_PRESENTATION_NORMAL;
3457                         }
3458         }
3459
3460         if (current == view->presentation_state) {
3461                 if (ev_page_cache_get_n_pages (view->page_cache) > 1 &&
3462                     key_is_numeric (event->keyval)) {
3463                         gint x, y;
3464
3465                         ev_view_goto_window_create (view);
3466                         ev_view_goto_window_send_key_event (view, (GdkEvent *)event);
3467                         gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
3468                         gtk_window_move (GTK_WINDOW (view->goto_window), x, y);
3469                         gtk_widget_show (view->goto_window);
3470                         ev_view_goto_entry_grab_focus (view);
3471
3472                         return TRUE;
3473                 }
3474
3475                 return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
3476         }
3477
3478         switch (view->presentation_state) {
3479                 case EV_PRESENTATION_NORMAL:
3480                 case EV_PRESENTATION_BLACK:
3481                         gdk_window_set_background (view->layout.bin_window,
3482                                                    &widget->style->black);
3483                         break;
3484                 case EV_PRESENTATION_WHITE:
3485                         gdk_window_set_background (view->layout.bin_window,
3486                                                    &widget->style->white);
3487                         break;
3488                 default:
3489                         return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
3490         }
3491
3492         gtk_widget_queue_draw (widget);
3493         return TRUE;
3494 }
3495
3496 static gint
3497 ev_view_focus_in (GtkWidget     *widget,
3498                   GdkEventFocus *event)
3499 {
3500         if (EV_VIEW (widget)->pixbuf_cache)
3501                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
3502         gtk_widget_queue_draw (widget);
3503
3504         return FALSE;
3505 }
3506
3507 static gint
3508 ev_view_focus_out (GtkWidget     *widget,
3509                      GdkEventFocus *event)
3510 {
3511         if (EV_VIEW (widget)->goto_window)
3512                 ev_view_goto_window_hide (EV_VIEW (widget));
3513
3514         if (EV_VIEW (widget)->pixbuf_cache)
3515                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
3516         gtk_widget_queue_draw (widget);
3517
3518         return FALSE;
3519 }
3520
3521 static gboolean
3522 ev_view_leave_notify_event (GtkWidget *widget, GdkEventCrossing   *event)
3523 {
3524         EvView *view = EV_VIEW (widget);
3525
3526         if (view->cursor != EV_VIEW_CURSOR_NORMAL)
3527                 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
3528
3529 #if !GTK_CHECK_VERSION (2, 11, 7)
3530         if (view->link_tooltip) {
3531                 view->hovered_link = NULL;
3532                 ev_tooltip_deactivate (EV_TOOLTIP (view->link_tooltip));
3533         }
3534 #endif
3535
3536         return FALSE;
3537 }
3538
3539 static gboolean
3540 ev_view_enter_notify_event (GtkWidget *widget, GdkEventCrossing   *event)
3541 {
3542         EvView *view = EV_VIEW (widget);
3543
3544         ev_view_handle_cursor_over_xy (view, event->x, event->y);
3545
3546         return FALSE;
3547 }
3548
3549 static void
3550 ev_view_style_set (GtkWidget *widget,
3551                    GtkStyle  *old_style)
3552 {
3553         if (EV_VIEW (widget)->pixbuf_cache)
3554                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
3555
3556         GTK_WIDGET_CLASS (ev_view_parent_class)->style_set (widget, old_style);
3557 }
3558
3559 /*** Drawing ***/
3560
3561 static guint32
3562 ev_gdk_color_to_rgb (const GdkColor *color)
3563 {
3564   guint32 result;
3565   result = (0xff0000 | (color->red & 0xff00));
3566   result <<= 8;
3567   result |= ((color->green & 0xff00) | (color->blue >> 8));
3568   return result;
3569 }
3570
3571 static void
3572 draw_rubberband (GtkWidget *widget, GdkWindow *window,
3573                  const GdkRectangle *rect, guchar alpha)
3574 {
3575         GdkGC *gc;
3576         GdkPixbuf *pixbuf;
3577         GdkColor *fill_color_gdk;
3578         guint fill_color;
3579
3580         fill_color_gdk = gdk_color_copy (&GTK_WIDGET (widget)->style->base[GTK_STATE_SELECTED]);
3581         fill_color = ev_gdk_color_to_rgb (fill_color_gdk) << 8 | alpha;
3582
3583         pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE, 8,
3584                                  rect->width, rect->height);
3585         gdk_pixbuf_fill (pixbuf, fill_color);
3586
3587         gdk_draw_pixbuf (window, NULL, pixbuf,
3588                          0, 0,
3589                          rect->x - EV_VIEW (widget)->scroll_x, rect->y - EV_VIEW (widget)->scroll_y,
3590                          rect->width, rect->height,
3591                          GDK_RGB_DITHER_NONE,
3592                          0, 0);
3593
3594         g_object_unref (pixbuf);
3595
3596         gc = gdk_gc_new (window);
3597         gdk_gc_set_rgb_fg_color (gc, fill_color_gdk);
3598         gdk_draw_rectangle (window, gc, FALSE,
3599                             rect->x - EV_VIEW (widget)->scroll_x, rect->y - EV_VIEW (widget)->scroll_y,
3600                             rect->width - 1,
3601                             rect->height - 1);
3602         g_object_unref (gc);
3603
3604         gdk_color_free (fill_color_gdk);
3605 }
3606
3607
3608 static void
3609 highlight_find_results (EvView *view, int page)
3610 {
3611         EvDocumentFind *find;
3612         int i, results = 0;
3613
3614         find = EV_DOCUMENT_FIND (view->document);
3615
3616         results = ev_document_find_get_n_results (find, page);
3617
3618         for (i = 0; i < results; i++) {
3619                 EvRectangle rectangle;
3620                 GdkRectangle view_rectangle;
3621                 guchar alpha;
3622
3623                 if (i == view->find_result && page == view->current_page) {
3624                         alpha = 0x90;
3625                 } else {
3626                         alpha = 0x20;
3627                 }
3628
3629                 ev_document_find_get_result (find, page, i, &rectangle);
3630                 doc_rect_to_view_rect (view, page, &rectangle, &view_rectangle);
3631                 draw_rubberband (GTK_WIDGET (view), view->layout.bin_window,
3632                                  &view_rectangle, alpha);
3633         }
3634 }
3635
3636 static void
3637 draw_loading_text (EvView       *view,
3638                    GdkRectangle *page_area,
3639                    GdkRectangle *expose_area)
3640 {
3641         cairo_t *cr;
3642         gint     width, height;
3643
3644         if (!view->loading_text) {
3645                 const gchar *loading_text = _("Loading...");
3646                 PangoLayout *layout;
3647                 PangoFontDescription *font_desc;
3648                 PangoRectangle logical_rect;
3649                 gint target_width;
3650                 gdouble real_scale;
3651
3652                 ev_document_fc_mutex_lock ();
3653
3654                 layout = gtk_widget_create_pango_layout (GTK_WIDGET (view), loading_text);
3655
3656                 font_desc = pango_font_description_new ();
3657
3658                 /* We set the font to be 10 points, get the size, and scale appropriately */
3659                 pango_font_description_set_size (font_desc, 10 * PANGO_SCALE);
3660                 pango_layout_set_font_description (layout, font_desc);
3661                 pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
3662
3663                 target_width = MAX (page_area->width / 2, 1);
3664                 real_scale = ((double)target_width / (double) logical_rect.width) * (PANGO_SCALE * 10);
3665                 pango_font_description_set_size (font_desc, (int)real_scale);
3666                 pango_layout_set_font_description (layout, font_desc);
3667                 pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
3668
3669                 view->loading_text = cairo_image_surface_create (CAIRO_FORMAT_ARGB32,
3670                                                                  logical_rect.width,
3671                                                                  logical_rect.height);
3672                 cr = cairo_create (view->loading_text);
3673                 cairo_set_source_rgb (cr,
3674                                       155 / (double)255,
3675                                       155 / (double)255,
3676                                       155 / (double)255);
3677                 pango_cairo_show_layout (cr, layout);
3678                 cairo_destroy (cr);
3679
3680                 pango_font_description_free (font_desc);
3681                 g_object_unref (layout);
3682
3683                 ev_document_fc_mutex_unlock ();
3684         }
3685
3686         width = (page_area->width - cairo_image_surface_get_width (view->loading_text)) / 2;
3687         height = (page_area->height - cairo_image_surface_get_height (view->loading_text)) / 2;
3688
3689         cr = gdk_cairo_create (view->layout.bin_window);
3690         cairo_translate (cr,
3691                          page_area->x + width,
3692                          page_area->y + height);
3693         cairo_set_source_surface (cr, view->loading_text, 0, 0);
3694         cairo_paint (cr);
3695         cairo_destroy (cr);
3696 }
3697
3698 static void
3699 draw_one_page (EvView       *view,
3700                gint          page,
3701                cairo_t      *cr,
3702                GdkRectangle *page_area,
3703                GtkBorder    *border,
3704                GdkRectangle *expose_area,
3705                gboolean     *page_ready)
3706 {
3707         GdkRectangle overlap;
3708         GdkRectangle real_page_area;
3709
3710         g_assert (view->document);
3711
3712         if (! gdk_rectangle_intersect (page_area, expose_area, &overlap))
3713                 return;
3714
3715         /* Render the document itself */
3716         real_page_area = *page_area;
3717
3718         real_page_area.x += border->left;
3719         real_page_area.y += border->top;
3720         real_page_area.width -= (border->left + border->right);
3721         real_page_area.height -= (border->top + border->bottom);
3722         *page_ready = TRUE;
3723
3724         if (!view->presentation) {
3725                 gint current_page;
3726
3727                 current_page = ev_page_cache_get_current_page (view->page_cache);
3728                 ev_document_misc_paint_one_page (view->layout.bin_window,
3729                                                  GTK_WIDGET (view),
3730                                                  page_area, border,
3731                                                  page == current_page);
3732         }
3733
3734         if (gdk_rectangle_intersect (&real_page_area, expose_area, &overlap)) {
3735                 gint             width, height;
3736                 gint             page_width, page_height;
3737                 cairo_surface_t *page_surface = NULL;
3738                 gint             selection_width, selection_height;
3739                 cairo_surface_t *selection_surface = NULL;
3740
3741                 page_surface = ev_pixbuf_cache_get_surface (view->pixbuf_cache, page);
3742
3743                 if (!page_surface) {
3744                         if (!view->presentation) {
3745                                 draw_loading_text (view,
3746                                                    &real_page_area,
3747                                                    expose_area);
3748                         }
3749
3750                         *page_ready = FALSE;
3751
3752                         return;
3753                 }
3754
3755                 ev_page_cache_get_size (view->page_cache,
3756                                         page, view->rotation,
3757                                         view->scale,
3758                                         &width, &height);
3759
3760                 page_width = cairo_image_surface_get_width (page_surface);
3761                 page_height = cairo_image_surface_get_height (page_surface);
3762
3763                 cairo_save (cr);
3764                 cairo_translate (cr, overlap.x, overlap.y);
3765
3766                 if (width != page_width || height != page_height) {
3767                         cairo_pattern_set_filter (cairo_get_source (cr),
3768                                                   CAIRO_FILTER_FAST);
3769                         cairo_scale (cr,
3770                                      (gdouble)width / page_width,
3771                                      (gdouble)height / page_height);
3772                 }
3773
3774                 cairo_surface_set_device_offset (page_surface,
3775                                                  overlap.x - real_page_area.x,
3776                                                  overlap.y - real_page_area.y);
3777                 cairo_set_source_surface (cr, page_surface, 0, 0);
3778                 cairo_paint (cr);
3779                 cairo_restore (cr);
3780
3781                 /* Get the selection pixbuf iff we have something to draw */
3782                 if (find_selection_for_page (view, page) &&
3783                     view->selection_mode == EV_VIEW_SELECTION_TEXT) {
3784                         selection_surface =
3785                                 ev_pixbuf_cache_get_selection_surface (view->pixbuf_cache,
3786                                                                        page,
3787                                                                        view->scale,
3788                                                                        NULL);
3789                 }
3790
3791                 if (!selection_surface) {
3792                         return;
3793                 }
3794
3795                 selection_width = cairo_image_surface_get_width (selection_surface);
3796                 selection_height = cairo_image_surface_get_height (selection_surface);
3797
3798                 cairo_save (cr);
3799                 cairo_translate (cr, overlap.x, overlap.y);
3800
3801                 if (width != selection_width || height != selection_height) {
3802                         cairo_pattern_set_filter (cairo_get_source (cr),
3803                                                   CAIRO_FILTER_FAST);
3804                         cairo_scale (cr,
3805                                      (gdouble)width / selection_width,
3806                                      (gdouble)height / selection_height);
3807                 }
3808
3809                 cairo_surface_set_device_offset (selection_surface,
3810                                                  overlap.x - real_page_area.x,
3811                                                  overlap.y - real_page_area.y);
3812                 cairo_set_source_surface (cr, selection_surface, 0, 0);
3813                 cairo_paint (cr);
3814                 cairo_restore (cr);
3815         }
3816 }
3817
3818 /*** GObject functions ***/
3819
3820 static void
3821 ev_view_finalize (GObject *object)
3822 {
3823         EvView *view = EV_VIEW (object);
3824
3825         g_free (view->find_status);
3826
3827         clear_selection (view);
3828         clear_link_selected (view);
3829
3830         if (view->image_dnd_info.image)
3831                 g_object_unref (view->image_dnd_info.image);
3832         view->image_dnd_info.image = NULL;
3833
3834         G_OBJECT_CLASS (ev_view_parent_class)->finalize (object);
3835 }
3836
3837 static void
3838 ev_view_destroy (GtkObject *object)
3839 {
3840         EvView *view = EV_VIEW (object);
3841
3842         if (view->document) {
3843                 g_object_unref (view->document);
3844                 view->document = NULL;
3845         }
3846
3847         if (view->pixbuf_cache) {
3848                 g_object_unref (view->pixbuf_cache);
3849                 view->pixbuf_cache = NULL;
3850         }
3851
3852 #if !GTK_CHECK_VERSION (2, 11, 7)
3853         if (view->link_tooltip) {
3854                 gtk_widget_destroy (view->link_tooltip);
3855                 view->link_tooltip = NULL;
3856         }
3857 #endif
3858         if (view->goto_window) {
3859                 gtk_widget_destroy (view->goto_window);
3860                 view->goto_window = NULL;
3861                 view->goto_entry = NULL;
3862         }
3863
3864         if (view->selection_scroll_id) {
3865             g_source_remove (view->selection_scroll_id);
3866             view->selection_scroll_id = 0;
3867         }
3868
3869         if (view->selection_update_id) {
3870             g_source_remove (view->selection_update_id);
3871             view->selection_update_id = 0;
3872         }
3873
3874         if (view->loading_text) {
3875                 cairo_surface_destroy (view->loading_text);
3876                 view->loading_text = NULL;
3877         }
3878
3879         if (view->scroll_info.timeout_id) {
3880             g_source_remove (view->scroll_info.timeout_id);
3881             view->scroll_info.timeout_id = 0;
3882         }
3883
3884         if (view->drag_info.drag_timeout_id) {
3885                 g_source_remove (view->drag_info.drag_timeout_id);
3886                 view->drag_info.drag_timeout_id = 0;
3887         }
3888
3889         if (view->drag_info.release_timeout_id) {
3890                 g_source_remove (view->drag_info.release_timeout_id);
3891                 view->drag_info.release_timeout_id = 0;
3892         }
3893
3894         ev_view_presentation_transition_stop (view);
3895
3896         ev_view_set_scroll_adjustments (GTK_LAYOUT (view), NULL, NULL);
3897
3898         GTK_OBJECT_CLASS (ev_view_parent_class)->destroy (object);
3899 }
3900
3901 static void
3902 ev_view_set_property (GObject      *object,
3903                       guint         prop_id,
3904                       const GValue *value,
3905                       GParamSpec   *pspec)
3906 {
3907         EvView *view = EV_VIEW (object);
3908
3909         switch (prop_id) {
3910                 case PROP_CONTINUOUS:
3911                         ev_view_set_continuous (view, g_value_get_boolean (value));
3912                         break;
3913                 case PROP_DUAL_PAGE:
3914                         ev_view_set_dual_page (view, g_value_get_boolean (value));
3915                         break;
3916                 case PROP_FULLSCREEN:
3917                         ev_view_set_fullscreen (view, g_value_get_boolean (value));
3918                         break;
3919                 case PROP_PRESENTATION:
3920                         ev_view_set_presentation (view, g_value_get_boolean (value));
3921                         break;
3922                 case PROP_SIZING_MODE:
3923                         ev_view_set_sizing_mode (view, g_value_get_enum (value));
3924                         break;
3925                 case PROP_ZOOM:
3926                         ev_view_set_zoom (view, g_value_get_double (value), FALSE);
3927                         break;
3928                 case PROP_ROTATION:
3929                         ev_view_set_rotation (view, g_value_get_int (value));
3930                         break;
3931                 default:
3932                         G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
3933         }
3934 }
3935
3936 static AtkObject *
3937 ev_view_get_accessible (GtkWidget *widget)
3938 {
3939         static gboolean first_time = TRUE;
3940
3941         if (first_time) {
3942                 AtkObjectFactory *factory;
3943                 AtkRegistry *registry;
3944                 GType derived_type;
3945                 GType derived_atk_type;
3946
3947                 /*
3948                  * Figure out whether accessibility is enabled by looking at the
3949                  * type of the accessible object which would be created for
3950                  * the parent type of EvView.
3951                  */
3952                 derived_type = g_type_parent (EV_TYPE_VIEW);
3953
3954                 registry = atk_get_default_registry ();
3955                 factory = atk_registry_get_factory (registry,
3956                                                     derived_type);
3957                 derived_atk_type = atk_object_factory_get_accessible_type (factory);
3958                 if (g_type_is_a (derived_atk_type, GTK_TYPE_ACCESSIBLE))
3959                         atk_registry_set_factory_type (registry,
3960                                                        EV_TYPE_VIEW,
3961                                                        ev_view_accessible_factory_get_type ());
3962                 first_time = FALSE;
3963         }
3964         return GTK_WIDGET_CLASS (ev_view_parent_class)->get_accessible (widget);
3965 }
3966
3967 static void
3968 ev_view_get_property (GObject *object,
3969                       guint prop_id,
3970                       GValue *value,
3971                       GParamSpec *pspec)
3972 {
3973         EvView *view = EV_VIEW (object);
3974
3975         switch (prop_id) {
3976                 case PROP_FIND_STATUS:
3977                         g_value_set_string (value, view->find_status);
3978                         break;
3979                 case PROP_CONTINUOUS:
3980                         g_value_set_boolean (value, view->continuous);
3981                         break;
3982                 case PROP_DUAL_PAGE:
3983                         g_value_set_boolean (value, view->dual_page);
3984                         break;
3985                 case PROP_FULLSCREEN:
3986                         g_value_set_boolean (value, view->fullscreen);
3987                         break;
3988                 case PROP_PRESENTATION:
3989                         g_value_set_boolean (value, view->presentation);
3990                         break;
3991                 case PROP_SIZING_MODE:
3992                         g_value_set_enum (value, view->sizing_mode);
3993                         break;
3994                 case PROP_ZOOM:
3995                         g_value_set_double (value, view->scale);
3996                         break;
3997                 case PROP_ROTATION:
3998                         g_value_set_int (value, view->rotation);
3999                         break;
4000                 case PROP_HAS_SELECTION:
4001                         g_value_set_boolean (value,
4002                                              view->selection_info.selections != NULL);
4003                         break;
4004                 default:
4005                         G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
4006         }
4007 }
4008
4009 static void
4010 ev_view_class_init (EvViewClass *class)
4011 {
4012         GObjectClass *object_class = G_OBJECT_CLASS (class);
4013         GtkObjectClass *gtk_object_class = GTK_OBJECT_CLASS (class);
4014         GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
4015         GtkLayoutClass *layout_class = GTK_LAYOUT_CLASS (class);
4016         GtkBindingSet *binding_set;
4017
4018         object_class->finalize = ev_view_finalize;
4019         object_class->set_property = ev_view_set_property;
4020         object_class->get_property = ev_view_get_property;
4021
4022         widget_class->expose_event = ev_view_expose_event;
4023         widget_class->button_press_event = ev_view_button_press_event;
4024         widget_class->motion_notify_event = ev_view_motion_notify_event;
4025         widget_class->button_release_event = ev_view_button_release_event;
4026         widget_class->key_press_event = ev_view_key_press_event;
4027         widget_class->focus_in_event = ev_view_focus_in;
4028         widget_class->focus_out_event = ev_view_focus_out;
4029         widget_class->get_accessible = ev_view_get_accessible;
4030         widget_class->size_request = ev_view_size_request;
4031         widget_class->size_allocate = ev_view_size_allocate;
4032         widget_class->realize = ev_view_realize;
4033         widget_class->scroll_event = ev_view_scroll_event;
4034         widget_class->enter_notify_event = ev_view_enter_notify_event;
4035         widget_class->leave_notify_event = ev_view_leave_notify_event;
4036         widget_class->style_set = ev_view_style_set;
4037         widget_class->drag_data_get = ev_view_drag_data_get;
4038         widget_class->drag_motion = ev_view_drag_motion;
4039         widget_class->drag_data_received = ev_view_drag_data_received;
4040         widget_class->popup_menu = ev_view_popup_menu;
4041 #if GTK_CHECK_VERSION (2, 11, 7)
4042         widget_class->query_tooltip = ev_view_query_tooltip;
4043 #endif
4044
4045         gtk_object_class->destroy = ev_view_destroy;
4046
4047         layout_class->set_scroll_adjustments = ev_view_set_scroll_adjustments;
4048
4049         class->binding_activated = ev_view_scroll;
4050
4051         signals[SIGNAL_BINDING_ACTIVATED] = g_signal_new ("binding_activated",
4052                          G_TYPE_FROM_CLASS (object_class),
4053                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
4054                          G_STRUCT_OFFSET (EvViewClass, binding_activated),
4055                          NULL, NULL,
4056                          ev_marshal_VOID__ENUM_BOOLEAN,
4057                          G_TYPE_NONE, 2,
4058                          GTK_TYPE_SCROLL_TYPE,
4059                          G_TYPE_BOOLEAN);
4060
4061         signals[SIGNAL_ZOOM_INVALID] = g_signal_new ("zoom-invalid",
4062                          G_TYPE_FROM_CLASS (object_class),
4063                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
4064                          G_STRUCT_OFFSET (EvViewClass, zoom_invalid),
4065                          NULL, NULL,
4066                          ev_marshal_VOID__VOID,
4067                          G_TYPE_NONE, 0, G_TYPE_NONE);
4068         signals[SIGNAL_HANDLE_LINK] = g_signal_new ("handle-link",
4069                          G_TYPE_FROM_CLASS (object_class),
4070                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
4071                          G_STRUCT_OFFSET (EvViewClass, handle_link),
4072                          NULL, NULL,
4073                          g_cclosure_marshal_VOID__OBJECT,
4074                          G_TYPE_NONE, 1,
4075                          G_TYPE_OBJECT);
4076         signals[SIGNAL_EXTERNAL_LINK] = g_signal_new ("external-link",
4077                          G_TYPE_FROM_CLASS (object_class),
4078                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
4079                          G_STRUCT_OFFSET (EvViewClass, external_link),
4080                          NULL, NULL,
4081                          g_cclosure_marshal_VOID__OBJECT,
4082                          G_TYPE_NONE, 1,
4083                          G_TYPE_OBJECT);
4084         signals[SIGNAL_POPUP_MENU] = g_signal_new ("popup",
4085                          G_TYPE_FROM_CLASS (object_class),
4086                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
4087                          G_STRUCT_OFFSET (EvViewClass, popup_menu),
4088                          NULL, NULL,
4089                          g_cclosure_marshal_VOID__OBJECT,
4090                          G_TYPE_NONE, 1,
4091                          G_TYPE_OBJECT);
4092
4093
4094         g_object_class_install_property (object_class,
4095                                          PROP_FIND_STATUS,
4096                                          g_param_spec_string ("find-status",
4097                                                               "Find Status Message",
4098                                                               "The find status message",
4099                                                               NULL,
4100                                                               G_PARAM_READABLE));
4101
4102         g_object_class_install_property (object_class,
4103                                          PROP_CONTINUOUS,
4104                                          g_param_spec_boolean ("continuous",
4105                                                                "Continuous",
4106                                                                "Continuous scrolling mode",
4107                                                                TRUE,
4108                                                                G_PARAM_READWRITE));
4109
4110         g_object_class_install_property (object_class,
4111                                          PROP_DUAL_PAGE,
4112                                          g_param_spec_boolean ("dual-page",
4113                                                                "Dual Page",
4114                                                                "Two pages visible at once",
4115                                                                FALSE,
4116                                                                G_PARAM_READWRITE));
4117         g_object_class_install_property (object_class,
4118                                          PROP_FULLSCREEN,
4119                                          g_param_spec_boolean ("fullscreen",
4120                                                                "Full Screen",
4121                                                                "Draw page in a fullscreen fashion",
4122                                                                FALSE,
4123                                                                G_PARAM_READWRITE));
4124         g_object_class_install_property (object_class,
4125                                          PROP_PRESENTATION,
4126                                          g_param_spec_boolean ("presentation",
4127                                                                "Presentation",
4128                                                                "Draw page in presentation mode",
4129                                                                TRUE,
4130                                                                G_PARAM_READWRITE));
4131
4132         g_object_class_install_property (object_class,
4133                                          PROP_SIZING_MODE,
4134                                          g_param_spec_enum ("sizing-mode",
4135                                                             "Sizing Mode",
4136                                                             "Sizing Mode",
4137                                                             EV_TYPE_SIZING_MODE,
4138                                                             EV_SIZING_FIT_WIDTH,
4139                                                             G_PARAM_READWRITE));
4140
4141         g_object_class_install_property (object_class,
4142                                          PROP_ZOOM,
4143                                          g_param_spec_double ("zoom",
4144                                                               "Zoom factor",
4145                                                               "Zoom factor",
4146                                                               0,
4147                                                               G_MAXDOUBLE,
4148                                                               1.0,
4149                                                               G_PARAM_READWRITE));
4150         g_object_class_install_property (object_class,
4151                                          PROP_ROTATION,
4152                                          g_param_spec_double ("rotation",
4153                                                               "Rotation",
4154                                                               "Rotation",
4155                                                               0,
4156                                                               360,
4157                                                               0,
4158                                                               G_PARAM_READWRITE));
4159         g_object_class_install_property (object_class,
4160                                          PROP_HAS_SELECTION,
4161                                          g_param_spec_boolean ("has-selection",
4162                                                                "Has selection",
4163                                                                "The view has selections",
4164                                                                FALSE,
4165                                                                G_PARAM_READABLE));
4166
4167         binding_set = gtk_binding_set_by_class (class);
4168
4169         add_scroll_binding_keypad (binding_set, GDK_Left,  0, EV_SCROLL_STEP_BACKWARD, TRUE);
4170         add_scroll_binding_keypad (binding_set, GDK_Right, 0, EV_SCROLL_STEP_FORWARD,  TRUE);
4171         add_scroll_binding_keypad (binding_set, GDK_Left,  GDK_MOD1_MASK, EV_SCROLL_STEP_DOWN, TRUE);
4172         add_scroll_binding_keypad (binding_set, GDK_Right, GDK_MOD1_MASK, EV_SCROLL_STEP_UP,  TRUE);
4173         add_scroll_binding_keypad (binding_set, GDK_Up,    0, EV_SCROLL_STEP_BACKWARD, FALSE);
4174         add_scroll_binding_keypad (binding_set, GDK_Down,  0, EV_SCROLL_STEP_FORWARD,  FALSE);
4175         add_scroll_binding_keypad (binding_set, GDK_Up,    GDK_MOD1_MASK, EV_SCROLL_STEP_DOWN, FALSE);
4176         add_scroll_binding_keypad (binding_set, GDK_Down,  GDK_MOD1_MASK, EV_SCROLL_STEP_UP,  FALSE);
4177         gtk_binding_entry_add_signal (binding_set, GDK_H, 0, "binding_activated", 2, EV_TYPE_SCROLL_TYPE,
4178                                       EV_SCROLL_STEP_BACKWARD, G_TYPE_BOOLEAN, TRUE);
4179         gtk_binding_entry_add_signal (binding_set, GDK_J, 0, "binding_activated", 2, EV_TYPE_SCROLL_TYPE,
4180                                       EV_SCROLL_STEP_FORWARD, G_TYPE_BOOLEAN, FALSE);
4181         gtk_binding_entry_add_signal (binding_set, GDK_K, 0, "binding_activated", 2, EV_TYPE_SCROLL_TYPE,
4182                                       EV_SCROLL_STEP_BACKWARD, G_TYPE_BOOLEAN, FALSE);
4183         gtk_binding_entry_add_signal (binding_set, GDK_L, 0, "binding_activated", 2, EV_TYPE_SCROLL_TYPE,
4184                                       EV_SCROLL_STEP_FORWARD, G_TYPE_BOOLEAN, TRUE);
4185
4186 }
4187
4188 static void
4189 ev_view_init (EvView *view)
4190 {
4191         GTK_WIDGET_SET_FLAGS (view, GTK_CAN_FOCUS);
4192
4193         view->spacing = 5;
4194         view->scale = 1.0;
4195         view->current_page = 0;
4196         view->pressed_button = -1;
4197         view->cursor = EV_VIEW_CURSOR_NORMAL;
4198         view->drag_info.in_drag = FALSE;
4199         view->scroll_info.autoscrolling = FALSE;
4200         view->selection_info.selections = NULL;
4201         view->selection_info.in_selection = FALSE;
4202         view->selection_info.in_drag = FALSE;
4203         view->selection_mode = EV_VIEW_SELECTION_TEXT;
4204         view->continuous = TRUE;
4205         view->dual_page = FALSE;
4206         view->presentation = FALSE;
4207         view->presentation_state = EV_PRESENTATION_NORMAL;
4208         view->fullscreen = FALSE;
4209         view->sizing_mode = EV_SIZING_FIT_WIDTH;
4210         view->pending_scroll = SCROLL_TO_KEEP_POSITION;
4211         view->jump_to_find_result = TRUE;
4212         view->highlight_find_results = FALSE;
4213
4214         gtk_layout_set_hadjustment (GTK_LAYOUT (view), NULL);
4215         gtk_layout_set_vadjustment (GTK_LAYOUT (view), NULL);
4216
4217         gtk_drag_dest_set (GTK_WIDGET (view),
4218                            GTK_DEST_DEFAULT_ALL,
4219                            view_drop_targets,
4220                            G_N_ELEMENTS (view_drop_targets),
4221                            GDK_ACTION_COPY);
4222 }
4223
4224 /*** Callbacks ***/
4225
4226 static void
4227 find_changed_cb (EvDocument *document, int page, EvView *view)
4228 {
4229         double percent;
4230         int n_pages;
4231
4232         percent = ev_document_find_get_progress
4233                         (EV_DOCUMENT_FIND (view->document));
4234         n_pages = ev_page_cache_get_n_pages (view->page_cache);
4235
4236         if (view->jump_to_find_result == TRUE) {
4237                 jump_to_find_page (view, EV_VIEW_FIND_NEXT, 0);
4238                 jump_to_find_result (view);
4239         }
4240         update_find_status_message (view, percent * n_pages >= n_pages - 1 );
4241         if (view->current_page == page)
4242                 gtk_widget_queue_draw (GTK_WIDGET (view));
4243 }
4244
4245 static void
4246 ev_view_change_page (EvView *view,
4247                      gint    new_page)
4248 {
4249         gint x, y;
4250
4251         view->current_page = new_page;
4252         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
4253
4254         if (view->presentation)
4255                 ev_view_presentation_transition_start (view);
4256
4257         gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
4258         ev_view_handle_cursor_over_xy (view, x, y);
4259
4260         gtk_widget_queue_resize (GTK_WIDGET (view));
4261 }
4262
4263 static void
4264 ev_view_transition_animation_finish (EvTransitionAnimation *animation,
4265                                      EvView                *view)
4266 {
4267         g_object_unref (view->animation);
4268         view->animation = NULL;
4269         ev_view_change_page (view, view->current_page);
4270 }
4271
4272 static void
4273 ev_view_transition_animation_frame (EvTransitionAnimation *animation,
4274                                     gdouble                progress,
4275                                     EvView                *view)
4276 {
4277         gtk_widget_queue_draw (GTK_WIDGET (view));
4278 }
4279
4280 static void
4281 ev_view_presentation_animation_start (EvView *view,
4282                                       int     new_page)
4283 {
4284         EvTransitionEffect *effect = NULL;
4285         cairo_surface_t *surface;
4286
4287         if (EV_IS_DOCUMENT_TRANSITION (view->document))
4288                 effect = ev_document_transition_get_effect (EV_DOCUMENT_TRANSITION (view->document),
4289                                                             view->current_page);
4290         if (!effect)
4291                 return;
4292
4293         surface = ev_pixbuf_cache_get_surface (view->pixbuf_cache, view->current_page);
4294         view->animation = ev_transition_animation_new (effect);
4295         ev_transition_animation_set_origin_surface (view->animation, surface);
4296
4297         g_signal_connect (view->animation, "frame",
4298                           G_CALLBACK (ev_view_transition_animation_frame), view);
4299         g_signal_connect (view->animation, "finished",
4300                           G_CALLBACK (ev_view_transition_animation_finish), view);
4301 }
4302
4303 static void
4304 job_finished_cb (EvPixbufCache *pixbuf_cache,
4305                  GdkRegion     *region,
4306                  EvView        *view)
4307 {
4308         if (view->animation) {
4309                 cairo_surface_t *surface;
4310
4311                 surface = ev_pixbuf_cache_get_surface (pixbuf_cache, view->current_page);
4312                 ev_transition_animation_set_dest_surface (view->animation, surface);
4313         }
4314
4315         if (region) {
4316                 gdk_window_invalidate_region (view->layout.bin_window,
4317                                               region, TRUE);
4318         } else {
4319                 gtk_widget_queue_draw (GTK_WIDGET (view));
4320         }
4321 }
4322
4323 static void
4324 page_changed_cb (EvPageCache *page_cache,
4325                  int          new_page,
4326                  EvView      *view)
4327 {
4328         if (view->current_page != new_page) {
4329                 if (view->presentation)
4330                         ev_view_presentation_animation_start (view, new_page);
4331
4332                 ev_view_change_page (view, new_page);
4333         } else {
4334                 gtk_widget_queue_draw (GTK_WIDGET (view));
4335         }
4336
4337         if (EV_IS_DOCUMENT_FIND (view->document)) {
4338                 view->find_result = 0;
4339                 update_find_status_message (view, TRUE);
4340         }
4341 }
4342
4343 static void
4344 on_adjustment_value_changed (GtkAdjustment *adjustment,
4345                              EvView        *view)
4346 {
4347         int dx = 0, dy = 0;
4348         gint x, y;
4349         GList *children, *l;
4350
4351         if (! GTK_WIDGET_REALIZED (view))
4352                 return;
4353
4354         if (view->hadjustment) {
4355                 dx = view->scroll_x - (int) view->hadjustment->value;
4356                 view->scroll_x = (int) view->hadjustment->value;
4357         } else {
4358                 view->scroll_x = 0;
4359         }
4360
4361         if (view->vadjustment) {
4362                 dy = view->scroll_y - (int) view->vadjustment->value;
4363                 view->scroll_y = (int) view->vadjustment->value;
4364         } else {
4365                 view->scroll_y = 0;
4366         }
4367
4368         children = gtk_container_get_children (GTK_CONTAINER (view));
4369         for (l = children; l && l->data; l = g_list_next (l)) {
4370                 gint       child_x, child_y;
4371                 GtkWidget *child = (GtkWidget *)l->data;
4372
4373                 gtk_container_child_get (GTK_CONTAINER (view),
4374                                          child,
4375                                          "x", &child_x,
4376                                          "y", &child_y,
4377                                          NULL);
4378                 gtk_layout_move (GTK_LAYOUT (view), child, child_x + dx, child_y + dy);
4379         }
4380         g_list_free (children);
4381
4382         if (view->pending_resize)
4383                 gtk_widget_queue_draw (GTK_WIDGET (view));
4384         else
4385                 gdk_window_scroll (view->layout.bin_window, dx, dy);
4386
4387         gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
4388         ev_view_handle_cursor_over_xy (view, x, y);
4389
4390         if (view->document)
4391                 view_update_range_and_current_page (view);
4392 }
4393
4394 GtkWidget*
4395 ev_view_new (void)
4396 {
4397         GtkWidget *view;
4398
4399         view = g_object_new (EV_TYPE_VIEW, NULL);
4400
4401         return view;
4402 }
4403
4404 static void
4405 setup_caches (EvView *view)
4406 {
4407         view->page_cache = ev_page_cache_get (view->document);
4408         g_signal_connect (view->page_cache, "page-changed", G_CALLBACK (page_changed_cb), view);
4409         view->pixbuf_cache = ev_pixbuf_cache_new (GTK_WIDGET (view), view->document);
4410         g_signal_connect (view->pixbuf_cache, "job-finished", G_CALLBACK (job_finished_cb), view);
4411         page_changed_cb (view->page_cache,
4412                          ev_page_cache_get_current_page (view->page_cache),
4413                          view);
4414 }
4415
4416 static void
4417 clear_caches (EvView *view)
4418 {
4419         if (view->pixbuf_cache) {
4420                 g_object_unref (view->pixbuf_cache);
4421                 view->pixbuf_cache = NULL;
4422         }
4423
4424         if (view->page_cache) {
4425                 view->page_cache = NULL;
4426         }
4427 }
4428
4429 void
4430 ev_view_set_loading (EvView       *view,
4431                      gboolean      loading)
4432 {
4433         view->loading = loading;
4434         gtk_widget_queue_draw (GTK_WIDGET (view));
4435 }
4436
4437 static gboolean
4438 ev_view_autoscroll_cb (EvView *view)
4439 {
4440         gdouble speed, value;
4441
4442         /* If the user stops autoscrolling, autoscrolling will be
4443          * set to false but the timeout will continue; stop the timeout: */
4444         if (!view->scroll_info.autoscrolling) {
4445                 view->scroll_info.timeout_id = 0;
4446                 return FALSE;
4447         }
4448
4449         if (view->scroll_info.last_y > view->scroll_info.start_y &&
4450                 (view->scroll_info.last_y < view->scroll_info.start_y))
4451                 return TRUE;
4452
4453         /* Replace 100 with your speed of choice: The lower the faster.
4454          * Replace 3 with another speed of choice: The higher, the faster it accelerated
4455          *      based on the distance of the starting point from the mouse
4456          * (All also effected by the timeout interval of this callback) */
4457
4458         if (view->scroll_info.start_y > view->scroll_info.last_y)
4459                 speed = -pow ((((gdouble)view->scroll_info.start_y - view->scroll_info.last_y) / 100), 3);
4460         else
4461                 speed = pow ((((gdouble)view->scroll_info.last_y - view->scroll_info.start_y) / 100), 3);
4462
4463         value = gtk_adjustment_get_value (view->vadjustment);
4464         value = CLAMP (value + speed, 0, view->vadjustment->upper - view->vadjustment->page_size);
4465         gtk_adjustment_set_value (view->vadjustment, value);
4466
4467         return TRUE;
4468
4469 }
4470
4471 void
4472 ev_view_autoscroll_start (EvView *view)
4473 {
4474         gint x, y;
4475
4476         g_return_if_fail (EV_IS_VIEW (view));
4477
4478         if (view->scroll_info.autoscrolling)
4479                 return;
4480
4481         view->scroll_info.autoscrolling = TRUE;
4482         view->scroll_info.timeout_id =
4483                 g_timeout_add (20, (GSourceFunc)ev_view_autoscroll_cb,
4484                                view);
4485
4486         gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
4487         ev_view_handle_cursor_over_xy (view, x, y);
4488 }
4489
4490 void
4491 ev_view_autoscroll_stop (EvView *view)
4492 {
4493         gint x, y;
4494
4495         g_return_if_fail (EV_IS_VIEW (view));
4496
4497         if (!view->scroll_info.autoscrolling)
4498                 return;
4499
4500         view->scroll_info.autoscrolling = FALSE;
4501         if (view->scroll_info.timeout_id) {
4502                 g_source_remove (view->scroll_info.timeout_id);
4503                 view->scroll_info.timeout_id = 0;
4504         }
4505
4506         gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
4507         ev_view_handle_cursor_over_xy (view, x, y);
4508 }
4509
4510 void
4511 ev_view_set_document (EvView     *view,
4512                       EvDocument *document)
4513 {
4514         g_return_if_fail (EV_IS_VIEW (view));
4515
4516         view->loading = FALSE;
4517
4518         if (document != view->document) {
4519                 clear_caches (view);
4520
4521                 if (view->document) {
4522                         g_signal_handlers_disconnect_by_func (view->document,
4523                                                               find_changed_cb,
4524                                                               view);
4525                         g_object_unref (view->document);
4526                         view->page_cache = NULL;
4527
4528                 }
4529
4530                 view->document = document;
4531                 view->find_result = 0;
4532
4533                 if (view->document) {
4534                         g_object_ref (view->document);
4535                         if (EV_IS_DOCUMENT_FIND (view->document)) {
4536                                 g_signal_connect (view->document,
4537                                                   "find_changed",
4538                                                   G_CALLBACK (find_changed_cb),
4539                                                   view);
4540                         }
4541
4542                         setup_caches (view);
4543                 }
4544
4545                 gtk_widget_queue_resize (GTK_WIDGET (view));
4546         }
4547 }
4548
4549 /*** Zoom and sizing mode ***/
4550
4551 #define EPSILON 0.0000001
4552 void
4553 ev_view_set_zoom (EvView   *view,
4554                   double    factor,
4555                   gboolean  relative)
4556 {
4557         double scale;
4558
4559         if (relative)
4560                 scale = view->scale * factor;
4561         else
4562                 scale = factor;
4563
4564         scale = CLAMP (scale,
4565                        view->sizing_mode == EV_SIZING_FREE ? view->min_scale : 0,
4566                        view->max_scale);
4567
4568         if (ABS (view->scale - scale) < EPSILON)
4569                 return;
4570
4571         if (view->loading_text) {
4572                 cairo_surface_destroy (view->loading_text);
4573                 view->loading_text = NULL;
4574         }
4575
4576         view->scale = scale;
4577         view->pending_resize = TRUE;
4578
4579         gtk_widget_queue_resize (GTK_WIDGET (view));
4580
4581         g_object_notify (G_OBJECT (view), "zoom");
4582 }
4583
4584 double
4585 ev_view_get_zoom (EvView *view)
4586 {
4587         return view->scale;
4588 }
4589
4590 void
4591 ev_view_set_screen_dpi (EvView  *view,
4592                         gdouble  dpi)
4593 {
4594         g_return_if_fail (EV_IS_VIEW (view));
4595         g_return_if_fail (dpi > 0);
4596
4597         view->dpi = dpi;
4598         view->min_scale = MIN_SCALE * dpi / 72.0;
4599         view->max_scale = MAX_SCALE * dpi / 72.0;
4600 }
4601
4602 gboolean
4603 ev_view_get_continuous (EvView *view)
4604 {
4605         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
4606
4607         return view->continuous;
4608 }
4609
4610 void
4611 ev_view_set_continuous (EvView   *view,
4612                         gboolean  continuous)
4613 {
4614         g_return_if_fail (EV_IS_VIEW (view));
4615
4616         continuous = continuous != FALSE;
4617
4618         if (view->continuous != continuous) {
4619                 view->continuous = continuous;
4620                 view->pending_scroll = SCROLL_TO_PAGE_POSITION;
4621                 gtk_widget_queue_resize (GTK_WIDGET (view));
4622         }
4623
4624         g_object_notify (G_OBJECT (view), "continuous");
4625 }
4626
4627 gboolean
4628 ev_view_get_dual_page (EvView *view)
4629 {
4630         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
4631
4632         return view->dual_page;
4633 }
4634
4635 void
4636 ev_view_set_dual_page (EvView   *view,
4637                        gboolean  dual_page)
4638 {
4639         g_return_if_fail (EV_IS_VIEW (view));
4640
4641         dual_page = dual_page != FALSE;
4642
4643         if (view->dual_page == dual_page)
4644                 return;
4645
4646         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
4647         view->dual_page = dual_page;
4648         /* FIXME: if we're keeping the pixbuf cache around, we should extend the
4649          * preload_cache_size to be 2 if dual_page is set.
4650          */
4651         gtk_widget_queue_resize (GTK_WIDGET (view));
4652
4653         g_object_notify (G_OBJECT (view), "dual-page");
4654 }
4655
4656 void
4657 ev_view_set_fullscreen (EvView   *view,
4658                          gboolean  fullscreen)
4659 {
4660         g_return_if_fail (EV_IS_VIEW (view));
4661
4662         fullscreen = fullscreen != FALSE;
4663
4664         if (view->fullscreen == fullscreen)
4665                 return;
4666
4667         view->fullscreen = fullscreen;
4668         gtk_widget_queue_resize (GTK_WIDGET (view));
4669
4670         g_object_notify (G_OBJECT (view), "fullscreen");
4671 }
4672
4673 gboolean
4674 ev_view_get_fullscreen (EvView *view)
4675 {
4676         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
4677
4678         return view->fullscreen;
4679 }
4680
4681 void
4682 ev_view_set_presentation (EvView   *view,
4683                           gboolean  presentation)
4684 {
4685         g_return_if_fail (EV_IS_VIEW (view));
4686
4687         presentation = presentation != FALSE;
4688
4689         if (view->presentation == presentation)
4690                 return;
4691
4692         if (!presentation)
4693                 view->presentation_state = EV_PRESENTATION_NORMAL;
4694
4695         view->presentation = presentation;
4696         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
4697
4698         if (presentation) {
4699                 view->sizing_mode_saved = view->sizing_mode;
4700                 view->scale_saved = view->scale;
4701                 ev_view_set_sizing_mode (view, EV_SIZING_BEST_FIT);
4702         } else {
4703                 ev_view_set_sizing_mode (view, view->sizing_mode_saved);
4704                 ev_view_set_zoom (view, view->scale_saved, FALSE);
4705         }
4706
4707         gtk_widget_queue_resize (GTK_WIDGET (view));
4708
4709         if (presentation)
4710                 ev_view_presentation_transition_start (view);
4711         else {
4712                 ev_view_presentation_transition_stop (view);
4713
4714                 if (view->animation) {
4715                         /* stop any running animation */
4716                         ev_view_transition_animation_finish (view->animation, view);
4717                 }
4718         }
4719
4720         if (GTK_WIDGET_REALIZED (view)) {
4721                 if (view->presentation)
4722                         gdk_window_set_background (view->layout.bin_window,
4723                                                    &GTK_WIDGET (view)->style->black);
4724                 else
4725                         gdk_window_set_background (view->layout.bin_window,
4726                                                    &GTK_WIDGET (view)->style->mid [GTK_STATE_NORMAL]);
4727         }
4728
4729         g_object_notify (G_OBJECT (view), "presentation");
4730 }
4731
4732 gboolean
4733 ev_view_get_presentation (EvView *view)
4734 {
4735         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
4736
4737         return view->presentation;
4738 }
4739
4740 static gboolean
4741 transition_next_page (EvView *view)
4742 {
4743         ev_view_next_page (view);
4744
4745         return FALSE;
4746 }
4747
4748 static void
4749 ev_view_presentation_transition_stop (EvView *view)
4750 {
4751         if (view->trans_timeout_id > 0)
4752                 g_source_remove (view->trans_timeout_id);
4753         view->trans_timeout_id = 0;
4754 }
4755
4756 static void
4757 ev_view_presentation_transition_start (EvView *view)
4758 {
4759         gdouble duration;
4760
4761         if (!EV_IS_DOCUMENT_TRANSITION (view->document))
4762                 return;
4763
4764         ev_view_presentation_transition_stop (view);
4765
4766         duration = ev_document_transition_get_page_duration (EV_DOCUMENT_TRANSITION (view->document),
4767                                                              view->current_page);
4768         if (duration > 0) {
4769                 view->trans_timeout_id =
4770                         g_timeout_add_seconds (duration,
4771                                                (GSourceFunc) transition_next_page,
4772                                                view);
4773         }
4774 }
4775
4776 void
4777 ev_view_set_sizing_mode (EvView       *view,
4778                          EvSizingMode  sizing_mode)
4779 {
4780         g_return_if_fail (EV_IS_VIEW (view));
4781
4782         if (view->sizing_mode == sizing_mode)
4783                 return;
4784
4785         view->sizing_mode = sizing_mode;
4786         gtk_widget_queue_resize (GTK_WIDGET (view));
4787
4788         g_object_notify (G_OBJECT (view), "sizing-mode");
4789 }
4790
4791 EvSizingMode
4792 ev_view_get_sizing_mode (EvView *view)
4793 {
4794         g_return_val_if_fail (EV_IS_VIEW (view), EV_SIZING_FREE);
4795
4796         return view->sizing_mode;
4797 }
4798
4799 gboolean
4800 ev_view_can_zoom_in (EvView *view)
4801 {
4802         return view->scale * ZOOM_IN_FACTOR <= view->max_scale;
4803 }
4804
4805 gboolean
4806 ev_view_can_zoom_out (EvView *view)
4807 {
4808         return view->scale * ZOOM_OUT_FACTOR >= view->min_scale;
4809 }
4810
4811 void
4812 ev_view_zoom_in (EvView *view)
4813 {
4814         g_return_if_fail (view->sizing_mode == EV_SIZING_FREE);
4815
4816         if (view->presentation)
4817                 return;
4818
4819         view->pending_scroll = SCROLL_TO_CENTER;
4820         ev_view_set_zoom (view, ZOOM_IN_FACTOR, TRUE);
4821 }
4822
4823 void
4824 ev_view_zoom_out (EvView *view)
4825 {
4826         g_return_if_fail (view->sizing_mode == EV_SIZING_FREE);
4827
4828         if (view->presentation)
4829                 return;
4830
4831         view->pending_scroll = SCROLL_TO_CENTER;
4832         ev_view_set_zoom (view, ZOOM_OUT_FACTOR, TRUE);
4833 }
4834
4835 void
4836 ev_view_rotate_right (EvView *view)
4837 {
4838         int rotation = view->rotation + 90;
4839
4840         if (rotation >= 360) {
4841                 rotation -= 360;
4842         }
4843
4844         ev_view_set_rotation (view, rotation);
4845 }
4846
4847 void
4848 ev_view_rotate_left (EvView *view)
4849 {
4850         int rotation = view->rotation - 90;
4851
4852         if (rotation < 0) {
4853                 rotation += 360;
4854         }
4855
4856         ev_view_set_rotation (view, rotation);
4857 }
4858
4859 void
4860 ev_view_set_rotation (EvView *view, int rotation)
4861 {
4862         view->rotation = rotation;
4863
4864         if (view->pixbuf_cache) {
4865                 ev_pixbuf_cache_clear (view->pixbuf_cache);
4866                 gtk_widget_queue_resize (GTK_WIDGET (view));
4867         }
4868
4869         if (rotation != 0)
4870                 clear_selection (view);
4871
4872         g_object_notify (G_OBJECT (view), "rotation");
4873 }
4874
4875 int
4876 ev_view_get_rotation (EvView *view)
4877 {
4878         return view->rotation;
4879 }
4880
4881 static double
4882 zoom_for_size_fit_width (int doc_width,
4883                          int doc_height,
4884                          int target_width,
4885                          int target_height,
4886                          int vsb_width)
4887 {
4888         double scale;
4889
4890         scale = (double)target_width / doc_width;
4891
4892         if (doc_height * scale > target_height)
4893                 scale = (double) (target_width - vsb_width) / doc_width;
4894
4895         return scale;
4896 }
4897
4898 static double
4899 zoom_for_size_fit_height (int doc_width,
4900                           int doc_height,
4901                           int target_width,
4902                           int target_height,
4903                           int vsb_height)
4904 {
4905         double scale;
4906
4907         scale = (double)target_height / doc_height;
4908
4909         if (doc_width * scale > target_width)
4910                 scale = (double) (target_height - vsb_height) / doc_height;
4911
4912         return scale;
4913 }
4914
4915 static double
4916 zoom_for_size_best_fit (int doc_width,
4917                         int doc_height,
4918                         int target_width,
4919                         int target_height,
4920                         int vsb_width,
4921                         int hsb_width)
4922 {
4923         double w_scale;
4924         double h_scale;
4925
4926         w_scale = (double)target_width / doc_width;
4927         h_scale = (double)target_height / doc_height;
4928
4929         if (doc_height * w_scale > target_height)
4930                 w_scale = (double) (target_width - vsb_width) / doc_width;
4931         if (doc_width * h_scale > target_width)
4932                 h_scale = (double) (target_height - hsb_width) / doc_height;
4933
4934         return MIN (w_scale, h_scale);
4935 }
4936
4937
4938 static void
4939 ev_view_zoom_for_size_presentation (EvView *view,
4940                                     int     width,
4941                                     int     height)
4942 {
4943         int doc_width, doc_height;
4944         gdouble scale;
4945
4946         ev_page_cache_get_size (view->page_cache,
4947                                 view->current_page,
4948                                 view->rotation,
4949                                 1.0,
4950                                 &doc_width,
4951                                 &doc_height);
4952         scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, 0, 0);
4953         ev_view_set_zoom (view, scale, FALSE);
4954 }
4955
4956 static void
4957 ev_view_zoom_for_size_continuous_and_dual_page (EvView *view,
4958                            int     width,
4959                            int     height,
4960                            int     vsb_width,
4961                            int     hsb_height)
4962 {
4963         int doc_width, doc_height;
4964         GtkBorder border;
4965         gdouble scale;
4966
4967         ev_page_cache_get_max_width (view->page_cache,
4968                                      view->rotation,
4969                                      1.0,
4970                                      &doc_width);
4971         ev_page_cache_get_max_height (view->page_cache,
4972                                       view->rotation,
4973                                       1.0,
4974                                       &doc_height);
4975         compute_border (view, doc_width, doc_height, &border);
4976
4977         doc_width = doc_width * 2;
4978         width -= (2 * (border.left + border.right) + 3 * view->spacing);
4979         height -= (border.top + border.bottom + 2 * view->spacing - 1);
4980
4981         /* FIXME: We really need to calculate the overall height here, not the
4982          * page height.  We assume there's always a vertical scrollbar for
4983          * now.  We need to fix this. */
4984         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
4985                 scale = zoom_for_size_fit_width (doc_width, doc_height, width - vsb_width, height, 0);
4986         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
4987                 scale = zoom_for_size_best_fit (doc_width, doc_height, width - vsb_width, height, 0, hsb_height);
4988         else
4989                 g_assert_not_reached ();
4990
4991         ev_view_set_zoom (view, scale, FALSE);
4992 }
4993
4994 static void
4995 ev_view_zoom_for_size_continuous (EvView *view,
4996                                   int     width,
4997                                   int     height,
4998                                   int     vsb_width,
4999                                   int     hsb_height)
5000 {
5001         int doc_width, doc_height;
5002         GtkBorder border;
5003         gdouble scale;
5004
5005         ev_page_cache_get_max_width (view->page_cache,
5006                                      view->rotation,
5007                                      1.0,
5008                                      &doc_width);
5009         ev_page_cache_get_max_height (view->page_cache,
5010                                       view->rotation,
5011                                       1.0,
5012                                       &doc_height);
5013         compute_border (view, doc_width, doc_height, &border);
5014
5015         width -= (border.left + border.right + 2 * view->spacing);
5016         height -= (border.top + border.bottom + 2 * view->spacing - 1);
5017
5018         /* FIXME: We really need to calculate the overall height here, not the
5019          * page height.  We assume there's always a vertical scrollbar for
5020          * now.  We need to fix this. */
5021         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
5022                 scale = zoom_for_size_fit_width (doc_width, doc_height, width - vsb_width, height, 0);
5023         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
5024                 scale = zoom_for_size_best_fit (doc_width, doc_height, width - vsb_width, height, 0, hsb_height);
5025         else
5026                 g_assert_not_reached ();
5027
5028         ev_view_set_zoom (view, scale, FALSE);
5029 }
5030
5031 static void
5032 ev_view_zoom_for_size_dual_page (EvView *view,
5033                                  int     width,
5034                                  int     height,
5035                                  int     vsb_width,
5036                                  int     hsb_height)
5037 {
5038         GtkBorder border;
5039         gint doc_width, doc_height;
5040         gdouble scale;
5041         gint other_page;
5042
5043         other_page = view->current_page ^ 1;
5044
5045         /* Find the largest of the two. */
5046         ev_page_cache_get_size (view->page_cache,
5047                                 view->current_page,
5048                                 view->rotation,
5049                                 1.0,
5050                                 &doc_width, &doc_height);
5051
5052         if (other_page < ev_page_cache_get_n_pages (view->page_cache)) {
5053                 gint width_2, height_2;
5054                 ev_page_cache_get_size (view->page_cache,
5055                                         other_page,
5056                                         view->rotation,
5057                                         1.0,
5058                                         &width_2, &height_2);
5059                 if (width_2 > doc_width)
5060                         doc_width = width_2;
5061                 if (height_2 > doc_height)
5062                         doc_height = height_2;
5063         }
5064         compute_border (view, doc_width, doc_height, &border);
5065
5066         doc_width = doc_width * 2;
5067         width -= ((border.left + border.right)* 2 + 3 * view->spacing);
5068         height -= (border.top + border.bottom + 2 * view->spacing);
5069
5070         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
5071                 scale = zoom_for_size_fit_width (doc_width, doc_height, width, height, vsb_width);
5072         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
5073                 scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, vsb_width, hsb_height);
5074         else
5075                 g_assert_not_reached ();
5076
5077         ev_view_set_zoom (view, scale, FALSE);
5078 }
5079
5080 static void
5081 ev_view_zoom_for_size_single_page (EvView *view,
5082                                    int     width,
5083                                    int     height,
5084                                    int     vsb_width,
5085                                    int     hsb_height)
5086 {
5087         int doc_width, doc_height;
5088         GtkBorder border;
5089         gdouble scale;
5090
5091         ev_page_cache_get_size (view->page_cache,
5092                                 view->current_page,
5093                                 view->rotation,
5094                                 1.0,
5095                                 &doc_width,
5096                                 &doc_height);
5097         /* Get an approximate border */
5098         compute_border (view, width, height, &border);
5099
5100         width -= (border.left + border.right + 2 * view->spacing);
5101         height -= (border.top + border.bottom + 2 * view->spacing);
5102
5103         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
5104                 scale = zoom_for_size_fit_width (doc_width, doc_height, width, height, vsb_width);
5105         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
5106                 scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, vsb_width, hsb_height);
5107         else
5108                 g_assert_not_reached ();
5109
5110         ev_view_set_zoom (view, scale, FALSE);
5111 }
5112
5113 static void
5114 ev_view_set_zoom_for_size (EvView *view,
5115                            int     width,
5116                            int     height,
5117                            int     vsb_width,
5118                            int     hsb_height)
5119 {
5120         g_return_if_fail (EV_IS_VIEW (view));
5121         g_return_if_fail (view->sizing_mode == EV_SIZING_FIT_WIDTH ||
5122                           view->sizing_mode == EV_SIZING_BEST_FIT);
5123         g_return_if_fail (width >= 0);
5124         g_return_if_fail (height >= 0);
5125
5126         if (view->document == NULL)
5127                 return;
5128
5129         if (view->presentation)
5130                 ev_view_zoom_for_size_presentation (view, width, height);
5131         else if (view->continuous && view->dual_page)
5132                 ev_view_zoom_for_size_continuous_and_dual_page (view, width, height, vsb_width, hsb_height);
5133         else if (view->continuous)
5134                 ev_view_zoom_for_size_continuous (view, width, height, vsb_width, hsb_height);
5135         else if (view->dual_page)
5136                 ev_view_zoom_for_size_dual_page (view, width, height, vsb_width, hsb_height);
5137         else
5138                 ev_view_zoom_for_size_single_page (view, width, height, vsb_width, hsb_height);
5139 }
5140
5141 /*** Find ***/
5142 static void
5143 update_find_status_message (EvView *view, gboolean this_page)
5144 {
5145         char *message;
5146
5147         if (this_page) {
5148                 int results;
5149
5150                 results = ev_document_find_get_n_results
5151                                 (EV_DOCUMENT_FIND (view->document),
5152                                  view->current_page);
5153                 /* TRANS: Sometimes this could be better translated as
5154                    "%d hit(s) on this page".  Therefore this string
5155                    contains plural cases. */
5156                 message = g_strdup_printf (ngettext ("%d found on this page",
5157                                                      "%d found on this page",
5158                                                      results),
5159                                            results);
5160         } else {
5161                 double percent;
5162
5163                 percent = ev_document_find_get_progress
5164                                 (EV_DOCUMENT_FIND (view->document));
5165                 message = g_strdup_printf (_("%3d%% remaining to search"),
5166                                            (int) ((1.0 - percent) * 100));
5167
5168         }
5169         ev_view_set_find_status (view, message);
5170         g_free (message);
5171 }
5172
5173 const char *
5174 ev_view_get_find_status (EvView *view)
5175 {
5176         g_return_val_if_fail (EV_IS_VIEW (view), NULL);
5177
5178         return view->find_status;
5179 }
5180
5181 static void
5182 ev_view_set_find_status (EvView *view, const char *message)
5183 {
5184         g_return_if_fail (EV_IS_VIEW (view));
5185
5186         g_free (view->find_status);
5187         view->find_status = g_strdup (message);
5188         g_object_notify (G_OBJECT (view), "find-status");
5189 }
5190
5191 static void
5192 jump_to_find_result (EvView *view)
5193 {
5194         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
5195         EvRectangle rect;
5196         GdkRectangle view_rect;
5197         int n_results;
5198         int page = view->current_page;
5199
5200         n_results = ev_document_find_get_n_results (find, page);
5201
5202         if (n_results > 0  && view->find_result < n_results) {
5203                 ev_document_find_get_result
5204                         (find, page, view->find_result, &rect);
5205
5206                 doc_rect_to_view_rect (view, page, &rect, &view_rect);
5207                 ensure_rectangle_is_visible (view, &view_rect);
5208         }
5209 }
5210
5211 /**
5212  * jump_to_find_page
5213  * @view: #EvView instance
5214  * @direction: Direction to look
5215  * @shift: Shift from current page
5216  *
5217  * Jumps to the first page that has occurences of searched word.
5218  * Uses a direction where to look and a shift from current page.
5219  *
5220  */
5221 static void
5222 jump_to_find_page (EvView *view, EvViewFindDirection direction, gint shift)
5223 {
5224         int n_pages, i;
5225
5226         n_pages = ev_page_cache_get_n_pages (view->page_cache);
5227
5228         for (i = 0; i < n_pages; i++) {
5229                 int has_results;
5230                 int page;
5231
5232                 if (direction == EV_VIEW_FIND_NEXT)
5233                         page = view->current_page + i;
5234                 else
5235                         page = view->current_page - i;
5236                 page += shift;
5237
5238                 if (page >= n_pages) {
5239                         page = page - n_pages;
5240                 }
5241                 if (page < 0)
5242                         page = page + n_pages;
5243
5244                 has_results = ev_document_find_page_has_results
5245                                 (EV_DOCUMENT_FIND (view->document), page);
5246                 if (has_results == -1) {
5247                         break;
5248                 } else if (has_results == 1) {
5249                         ev_page_cache_set_current_page (view->page_cache, page);
5250                         break;
5251                 }
5252         }
5253 }
5254
5255 gboolean
5256 ev_view_can_find_next (EvView *view)
5257 {
5258         if (EV_IS_DOCUMENT_FIND (view->document)) {
5259                 EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
5260                 int i, n_pages;
5261
5262                 n_pages = ev_page_cache_get_n_pages (view->page_cache);
5263                 for (i = 0; i < n_pages; i++) {
5264                         if (ev_document_find_get_n_results (find, i) > 0) {
5265                                 return TRUE;
5266                         }
5267                 }
5268         }
5269
5270         return FALSE;
5271 }
5272
5273 void
5274 ev_view_find_next (EvView *view)
5275 {
5276         int n_results, n_pages;
5277         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
5278
5279         n_results = ev_document_find_get_n_results (find, view->current_page);
5280
5281         n_pages = ev_page_cache_get_n_pages (view->page_cache);
5282
5283         view->find_result++;
5284
5285         if (view->find_result >= n_results) {
5286
5287                 view->find_result = 0;
5288                 jump_to_find_page (view, EV_VIEW_FIND_NEXT, 1);
5289                 jump_to_find_result (view);
5290         } else {
5291                 jump_to_find_result (view);
5292                 gtk_widget_queue_draw (GTK_WIDGET (view));
5293         }
5294 }
5295
5296 gboolean
5297 ev_view_can_find_previous (EvView *view)
5298 {
5299         if (EV_IS_DOCUMENT_FIND (view->document)) {
5300                 EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
5301                 int i, n_pages;
5302
5303                 n_pages = ev_page_cache_get_n_pages (view->page_cache);
5304                 for (i = n_pages - 1; i >= 0; i--) {
5305                         if (ev_document_find_get_n_results (find, i) > 0) {
5306                                 return TRUE;
5307                         }
5308                 }
5309         }
5310
5311         return FALSE;
5312 }
5313 void
5314 ev_view_find_previous (EvView *view)
5315 {
5316         int n_results, n_pages;
5317         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
5318         EvPageCache *page_cache;
5319
5320         page_cache = ev_page_cache_get (view->document);
5321
5322         n_results = ev_document_find_get_n_results (find, view->current_page);
5323
5324         n_pages = ev_page_cache_get_n_pages (page_cache);
5325
5326         view->find_result--;
5327
5328         if (view->find_result < 0) {
5329
5330                 jump_to_find_page (view, EV_VIEW_FIND_PREV, -1);
5331                 view->find_result = ev_document_find_get_n_results (find, view->current_page) - 1;
5332                 jump_to_find_result (view);
5333         } else {
5334                 jump_to_find_result (view);
5335                 gtk_widget_queue_draw (GTK_WIDGET (view));
5336         }
5337 }
5338
5339 void
5340 ev_view_search_changed (EvView *view)
5341 {
5342         /* search string has changed, focus on new search result */
5343         view->jump_to_find_result = TRUE;
5344 }
5345
5346 void
5347 ev_view_set_highlight_search (EvView *view, gboolean value)
5348 {
5349         view->highlight_find_results = value;
5350         gtk_widget_queue_draw (GTK_WIDGET (view));
5351 }
5352
5353 void
5354 ev_view_find_cancel (EvView *view)
5355 {
5356         if (EV_IS_DOCUMENT_FIND (view->document)) {
5357                 EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
5358
5359                 ev_document_find_cancel (find);
5360         }
5361 }
5362
5363 /*** Selections ***/
5364
5365 /* compute_new_selection_rect/text calculates the area currently selected by
5366  * view_rect.  each handles a different mode;
5367  */
5368 static GList *
5369 compute_new_selection_rect (EvView       *view,
5370                             GdkPoint     *start,
5371                             GdkPoint     *stop)
5372 {
5373         GdkRectangle view_rect;
5374         int n_pages, i;
5375         GList *list = NULL;
5376
5377         g_assert (view->selection_mode == EV_VIEW_SELECTION_RECTANGLE);
5378
5379         view_rect.x = MIN (start->x, stop->x);
5380         view_rect.y = MIN (start->y, stop->y);
5381         view_rect.width = MAX (start->x, stop->x) - view_rect.x;
5382         view_rect.width = MAX (start->y, stop->y) - view_rect.y;
5383
5384         n_pages = ev_page_cache_get_n_pages (view->page_cache);
5385
5386         for (i = 0; i < n_pages; i++) {
5387                 GdkRectangle page_area;
5388                 GtkBorder border;
5389
5390                 if (get_page_extents (view, i, &page_area, &border)) {
5391                         GdkRectangle overlap;
5392
5393                         if (gdk_rectangle_intersect (&page_area, &view_rect, &overlap)) {
5394                                 EvViewSelection *selection;
5395
5396                                 selection = g_new0 (EvViewSelection, 1);
5397                                 selection->page = i;
5398                                 view_rect_to_doc_rect (view, &overlap, &page_area,
5399                                                        &(selection->rect));
5400
5401                                 list = g_list_append (list, selection);
5402                         }
5403                 }
5404         }
5405
5406         return list;
5407 }
5408
5409 static gboolean
5410 gdk_rectangle_point_in (GdkRectangle *rectangle,
5411                         GdkPoint     *point)
5412 {
5413         return rectangle->x <= point->x &&
5414                 rectangle->y <= point->y &&
5415                 point->x < rectangle->x + rectangle->width &&
5416                 point->y < rectangle->y + rectangle->height;
5417 }
5418
5419 static GList *
5420 compute_new_selection_text (EvView          *view,
5421                             EvSelectionStyle style,
5422                             GdkPoint        *start,
5423                             GdkPoint        *stop)
5424 {
5425         int n_pages, i, first, last;
5426         GList *list = NULL;
5427         EvViewSelection *selection;
5428         gint width, height;
5429         int start_page, end_page;
5430
5431         g_assert (view->selection_mode == EV_VIEW_SELECTION_TEXT);
5432
5433         n_pages = ev_page_cache_get_n_pages (view->page_cache);
5434
5435         /* First figure out the range of pages the selection
5436          * affects. */
5437         first = n_pages;
5438         last = 0;
5439         if (view->continuous) {
5440                 start_page = 0;
5441                 end_page = n_pages;
5442         } else if (view->dual_page) {
5443                 start_page = view->start_page;
5444                 end_page = view->end_page + 1;
5445         } else {
5446                 start_page = view->current_page;
5447                 end_page = view->current_page + 1;
5448         }
5449
5450         for (i = start_page; i < end_page; i++) {
5451                 GdkRectangle page_area;
5452                 GtkBorder border;
5453
5454                 get_page_extents (view, i, &page_area, &border);
5455                 if (gdk_rectangle_point_in (&page_area, start) ||
5456                     gdk_rectangle_point_in (&page_area, stop)) {
5457                         if (first == n_pages)
5458                                 first = i;
5459                         last = i;
5460                 }
5461
5462         }
5463
5464         /* Now create a list of EvViewSelection's for the affected
5465          * pages.  This could be an empty list, a list of just one
5466          * page or a number of pages.*/
5467         for (i = first; i < last + 1; i++) {
5468                 GdkRectangle page_area;
5469                 GtkBorder border;
5470                 GdkPoint *point;
5471
5472                 ev_page_cache_get_size (view->page_cache, i,
5473                                         view->rotation,
5474                                         1.0, &width, &height);
5475
5476                 selection = g_new0 (EvViewSelection, 1);
5477                 selection->page = i;
5478                 selection->style = style;
5479                 selection->rect.x1 = selection->rect.y1 = 0;
5480                 selection->rect.x2 = width;
5481                 selection->rect.y2 = height;
5482
5483                 get_page_extents (view, i, &page_area, &border);
5484
5485                 if (gdk_rectangle_point_in (&page_area, start))
5486                         point = start;
5487                 else
5488                         point = stop;
5489
5490                 if (i == first)
5491                         view_point_to_doc_point (view, point, &page_area,
5492                                                  &selection->rect.x1,
5493                                                  &selection->rect.y1);
5494
5495                 /* If the selection is contained within just one page,
5496                  * make sure we don't write 'start' into both points
5497                  * in selection->rect. */
5498                 if (first == last)
5499                         point = stop;
5500
5501                 if (i == last)
5502                         view_point_to_doc_point (view, point, &page_area,
5503                                                  &selection->rect.x2,
5504                                                  &selection->rect.y2);
5505
5506                 list = g_list_append (list, selection);
5507         }
5508
5509         return list;
5510 }
5511
5512 /* This function takes the newly calculated list, and figures out which regions
5513  * have changed.  It then queues a redraw approporiately.
5514  */
5515 static void
5516 merge_selection_region (EvView *view,
5517                         GList  *new_list)
5518 {
5519         GList *old_list;
5520         GList *new_list_ptr, *old_list_ptr;
5521
5522         /* Update the selection */
5523         old_list = ev_pixbuf_cache_get_selection_list (view->pixbuf_cache);
5524         g_list_foreach (view->selection_info.selections, (GFunc)selection_free, NULL);
5525         view->selection_info.selections = new_list;
5526         ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, new_list);
5527         g_object_notify (G_OBJECT (view), "has-selection");
5528
5529         new_list_ptr = new_list;
5530         old_list_ptr = old_list;
5531
5532         while (new_list_ptr || old_list_ptr) {
5533                 EvViewSelection *old_sel, *new_sel;
5534                 int cur_page;
5535                 GdkRegion *region = NULL;
5536
5537                 new_sel = (new_list_ptr) ? (new_list_ptr->data) : NULL;
5538                 old_sel = (old_list_ptr) ? (old_list_ptr->data) : NULL;
5539
5540                 /* Assume that the lists are in order, and we run through them
5541                  * comparing them, one page at a time.  We come out with the
5542                  * first page we see. */
5543                 if (new_sel && old_sel) {
5544                         if (new_sel->page < old_sel->page) {
5545                                 new_list_ptr = new_list_ptr->next;
5546                                 old_sel = NULL;
5547                         } else if (new_sel->page > old_sel->page) {
5548                                 old_list_ptr = old_list_ptr->next;
5549                                 new_sel = NULL;
5550                         } else {
5551                                 new_list_ptr = new_list_ptr->next;
5552                                 old_list_ptr = old_list_ptr->next;
5553                         }
5554                 } else if (new_sel) {
5555                         new_list_ptr = new_list_ptr->next;
5556                 } else if (old_sel) {
5557                         old_list_ptr = old_list_ptr->next;
5558                 }
5559
5560                 g_assert (new_sel || old_sel);
5561
5562                 /* is the page we're looking at on the screen?*/
5563                 cur_page = new_sel ? new_sel->page : old_sel->page;
5564                 if (cur_page < view->start_page || cur_page > view->end_page)
5565                         continue;
5566
5567                 /* seed the cache with a new page.  We are going to need the new
5568                  * region too. */
5569                 if (new_sel) {
5570                         GdkRegion *tmp_region = NULL;
5571
5572                         ev_pixbuf_cache_get_selection_surface (view->pixbuf_cache,
5573                                                                cur_page,
5574                                                                view->scale,
5575                                                                &tmp_region);
5576
5577                         if (tmp_region) {
5578                                 new_sel->covered_region = gdk_region_copy (tmp_region);
5579                         }
5580                 }
5581
5582                 /* Now we figure out what needs redrawing */
5583                 if (old_sel && new_sel) {
5584                         if (old_sel->covered_region && new_sel->covered_region) {
5585                                 /* We only want to redraw the areas that have
5586                                  * changed, so we xor the old and new regions
5587                                  * and redraw if it's different */
5588                                 region = gdk_region_copy (old_sel->covered_region);
5589                                 gdk_region_xor (region, new_sel->covered_region);
5590                                 if (gdk_region_empty (region)) {
5591                                         gdk_region_destroy (region);
5592                                         region = NULL;
5593                                 }
5594                         } else if (old_sel->covered_region) {
5595                                 region = gdk_region_copy (old_sel->covered_region);
5596                         } else if (new_sel->covered_region) {
5597                                 region = gdk_region_copy (new_sel->covered_region);
5598                         }
5599                 } else if (old_sel && !new_sel) {
5600                         if (old_sel->covered_region && !gdk_region_empty (old_sel->covered_region)) {
5601                                 region = gdk_region_copy (old_sel->covered_region);
5602                         }
5603                 } else if (!old_sel && new_sel) {
5604                         if (new_sel->covered_region && !gdk_region_empty (new_sel->covered_region)) {
5605                                 region = gdk_region_copy (new_sel->covered_region);
5606                         }
5607                 } else {
5608                         g_assert_not_reached ();
5609                 }
5610
5611                 /* Redraw the damaged region! */
5612                 if (region) {
5613                         GdkRectangle page_area;
5614                         GtkBorder border;
5615
5616                         /* I don't know why but the region is smaller
5617                          * than expected. This hack fixes it, I guess
5618                          * 10 pixels more won't hurt
5619                          */
5620                         gdk_region_shrink (region, -5, -5);
5621
5622                         get_page_extents (view, cur_page, &page_area, &border);
5623                         gdk_region_offset (region,
5624                                            page_area.x + border.left - view->scroll_x,
5625                                            page_area.y + border.top - view->scroll_y);
5626                         gdk_window_invalidate_region (view->layout.bin_window, region, TRUE);
5627                         gdk_region_destroy (region);
5628                 }
5629         }
5630
5631         /* Free the old list, now that we're done with it. */
5632         g_list_foreach (old_list, (GFunc) selection_free, NULL);
5633 }
5634
5635 static void
5636 compute_selections (EvView          *view,
5637                     EvSelectionStyle style,
5638                     GdkPoint        *start,
5639                     GdkPoint        *stop)
5640 {
5641         GList *list;
5642
5643         if (view->selection_mode == EV_VIEW_SELECTION_RECTANGLE)
5644                 list = compute_new_selection_rect (view, start, stop);
5645         else
5646                 list = compute_new_selection_text (view, style, start, stop);
5647         merge_selection_region (view, list);
5648 }
5649
5650 /* Free's the selection.  It's up to the caller to queue redraws if needed.
5651  */
5652 static void
5653 selection_free (EvViewSelection *selection)
5654 {
5655         if (selection->covered_region)
5656                 gdk_region_destroy (selection->covered_region);
5657         g_free (selection);
5658 }
5659
5660 static void
5661 clear_selection (EvView *view)
5662 {
5663         g_list_foreach (view->selection_info.selections, (GFunc)selection_free, NULL);
5664         view->selection_info.selections = NULL;
5665         view->selection_info.in_selection = FALSE;
5666         if (view->pixbuf_cache)
5667                 ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, NULL);
5668         g_object_notify (G_OBJECT (view), "has-selection");
5669 }
5670
5671 void
5672 ev_view_select_all (EvView *view)
5673 {
5674         GList *selections = NULL;
5675         int n_pages, i;
5676
5677         /* Disable selection on rotated pages for the 0.4.0 series */
5678         if (view->rotation != 0)
5679                 return;
5680
5681         clear_selection (view);
5682
5683         n_pages = ev_page_cache_get_n_pages (view->page_cache);
5684         for (i = 0; i < n_pages; i++) {
5685                 int width, height;
5686                 EvViewSelection *selection;
5687
5688                 ev_page_cache_get_size (view->page_cache,
5689                                         i,
5690                                         view->rotation,
5691                                         1.0, &width, &height);
5692
5693                 selection = g_new0 (EvViewSelection, 1);
5694                 selection->page = i;
5695                 selection->style = EV_SELECTION_STYLE_GLYPH;
5696                 selection->rect.x1 = selection->rect.y1 = 0;
5697                 selection->rect.x2 = width;
5698                 selection->rect.y2 = height;
5699
5700                 selections = g_list_append (selections, selection);
5701         }
5702
5703         merge_selection_region (view, selections);
5704         gtk_widget_queue_draw (GTK_WIDGET (view));
5705 }
5706
5707 gboolean
5708 ev_view_get_has_selection (EvView *view)
5709 {
5710         return view->selection_info.selections != NULL;
5711 }
5712
5713 static char *
5714 get_selected_text (EvView *view)
5715 {
5716         GString *text;
5717         GList *l;
5718         gchar *normalized_text;
5719         EvRenderContext *rc;
5720
5721         text = g_string_new (NULL);
5722         rc = ev_render_context_new (NULL, view->rotation, view->scale);
5723
5724         ev_document_doc_mutex_lock ();
5725
5726         for (l = view->selection_info.selections; l != NULL; l = l->next) {
5727                 EvViewSelection *selection = (EvViewSelection *)l->data;
5728                 EvPage *page;
5729                 gchar *tmp;
5730
5731                 page = ev_document_get_page (view->document, selection->page);
5732                 ev_render_context_set_page (rc, page);
5733                 g_object_unref (page);
5734
5735                 tmp = ev_selection_get_selected_text (EV_SELECTION (view->document),
5736                                                       rc, selection->style,
5737                                                       &(selection->rect));
5738
5739                 g_string_append (text, tmp);
5740                 g_free (tmp);
5741         }
5742
5743         g_object_unref (rc);
5744
5745         ev_document_doc_mutex_unlock ();
5746
5747         normalized_text = g_utf8_normalize (text->str, text->len, G_NORMALIZE_NFKC);
5748         g_string_free (text, TRUE);
5749         return normalized_text;
5750 }
5751
5752 static void
5753 ev_view_clipboard_copy (EvView      *view,
5754                         const gchar *text)
5755 {
5756         GtkClipboard *clipboard;
5757
5758         clipboard = gtk_widget_get_clipboard (GTK_WIDGET (view),
5759                                               GDK_SELECTION_CLIPBOARD);
5760         gtk_clipboard_set_text (clipboard, text, -1);
5761 }
5762
5763 void
5764 ev_view_copy (EvView *ev_view)
5765 {
5766         char *text;
5767
5768         if (!EV_IS_SELECTION (ev_view->document))
5769                 return;
5770
5771         text = get_selected_text (ev_view);
5772         ev_view_clipboard_copy (ev_view, text);
5773         g_free (text);
5774 }
5775
5776 static void
5777 ev_view_primary_get_cb (GtkClipboard     *clipboard,
5778                         GtkSelectionData *selection_data,
5779                         guint             info,
5780                         gpointer          data)
5781 {
5782         EvView *ev_view = EV_VIEW (data);
5783
5784         if (ev_view->link_selected) {
5785                 gtk_selection_data_set_text (selection_data,
5786                                              ev_link_action_get_uri (ev_view->link_selected),
5787                                              -1);
5788         } else if (EV_IS_SELECTION (ev_view->document) &&
5789                    ev_view->selection_info.selections) {
5790                 gchar *text;
5791
5792                 text = get_selected_text (ev_view);
5793                 if (text) {
5794                         gtk_selection_data_set_text (selection_data, text, -1);
5795                         g_free (text);
5796                 }
5797         }
5798 }
5799
5800 static void
5801 ev_view_primary_clear_cb (GtkClipboard *clipboard,
5802                           gpointer      data)
5803 {
5804         EvView *view = EV_VIEW (data);
5805
5806         clear_selection (view);
5807         clear_link_selected (view);
5808 }
5809
5810 static void
5811 ev_view_update_primary_selection (EvView *ev_view)
5812 {
5813         GtkClipboard *clipboard;
5814
5815         clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view),
5816                                               GDK_SELECTION_PRIMARY);
5817
5818         if (ev_view->selection_info.selections || ev_view->link_selected) {
5819                 if (!gtk_clipboard_set_with_owner (clipboard,
5820                                                    clipboard_targets,
5821                                                    G_N_ELEMENTS (clipboard_targets),
5822                                                    ev_view_primary_get_cb,
5823                                                    ev_view_primary_clear_cb,
5824                                                    G_OBJECT (ev_view)))
5825                         ev_view_primary_clear_cb (clipboard, ev_view);
5826         } else {
5827                 if (gtk_clipboard_get_owner (clipboard) == G_OBJECT (ev_view))
5828                         gtk_clipboard_clear (clipboard);
5829         }
5830 }
5831
5832 static void
5833 clear_link_selected (EvView *view)
5834 {
5835         if (view->link_selected) {
5836                 g_object_unref (view->link_selected);
5837                 view->link_selected = NULL;
5838         }
5839 }
5840
5841 void
5842 ev_view_copy_link_address (EvView       *view,
5843                            EvLinkAction *action)
5844 {
5845         clear_link_selected (view);
5846
5847         ev_view_clipboard_copy (view, ev_link_action_get_uri (action));
5848
5849         view->link_selected = g_object_ref (action);
5850         ev_view_update_primary_selection (view);
5851 }
5852
5853 /*** Cursor operations ***/
5854
5855 static GdkCursor *
5856 ev_view_create_invisible_cursor(void)
5857 {
5858        GdkBitmap *empty;
5859        GdkColor black = { 0, 0, 0, 0 };
5860        static char bits[] = { 0x00 };
5861
5862        empty = gdk_bitmap_create_from_data (NULL, bits, 1, 1);
5863
5864        return gdk_cursor_new_from_pixmap (empty, empty, &black, &black, 0, 0);
5865 }
5866
5867 static void
5868 ev_view_set_cursor (EvView *view, EvViewCursor new_cursor)
5869 {
5870         GdkCursor *cursor = NULL;
5871         GdkDisplay *display;
5872         GtkWidget *widget;
5873
5874         if (view->cursor == new_cursor) {
5875                 return;
5876         }
5877
5878         widget = gtk_widget_get_toplevel (GTK_WIDGET (view));
5879         display = gtk_widget_get_display (widget);
5880         view->cursor = new_cursor;
5881
5882         switch (new_cursor) {
5883                 case EV_VIEW_CURSOR_NORMAL:
5884                         gdk_window_set_cursor (view->layout.bin_window, NULL);
5885                         break;
5886                 case EV_VIEW_CURSOR_IBEAM:
5887                         cursor = gdk_cursor_new_for_display (display, GDK_XTERM);
5888                         break;
5889                 case EV_VIEW_CURSOR_LINK:
5890                         cursor = gdk_cursor_new_for_display (display, GDK_HAND2);
5891                         break;
5892                 case EV_VIEW_CURSOR_WAIT:
5893                         cursor = gdk_cursor_new_for_display (display, GDK_WATCH);
5894                         break;
5895                 case EV_VIEW_CURSOR_HIDDEN:
5896                         cursor = ev_view_create_invisible_cursor ();
5897                         break;
5898                 case EV_VIEW_CURSOR_DRAG:
5899                         cursor = gdk_cursor_new_for_display (display, GDK_FLEUR);
5900                         break;
5901                 case EV_VIEW_CURSOR_AUTOSCROLL:
5902                         cursor = gdk_cursor_new_for_display (display, GDK_DOUBLE_ARROW);
5903                         break;
5904         }
5905
5906         if (cursor) {
5907                 gdk_window_set_cursor (view->layout.bin_window, cursor);
5908                 gdk_cursor_unref (cursor);
5909                 gdk_flush();
5910         }
5911 }
5912
5913 void
5914 ev_view_hide_cursor (EvView *view)
5915 {
5916        ev_view_set_cursor (view, EV_VIEW_CURSOR_HIDDEN);
5917 }
5918
5919 void
5920 ev_view_show_cursor (EvView *view)
5921 {
5922        ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
5923 }
5924
5925 static void
5926 ev_view_reset_presentation_state (EvView *view)
5927 {
5928         if (!view->presentation ||
5929             view->presentation_state == EV_PRESENTATION_NORMAL)
5930                 return;
5931
5932         view->presentation_state = EV_PRESENTATION_NORMAL;
5933         gdk_window_set_background (view->layout.bin_window,
5934                                    &GTK_WIDGET (view)->style->black);
5935         gtk_widget_queue_draw (GTK_WIDGET (view));
5936 }
5937
5938 gboolean
5939 ev_view_next_page (EvView *view)
5940 {
5941         int page, n_pages;
5942
5943         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
5944
5945         if (!view->page_cache)
5946                 return FALSE;
5947
5948         if (view->presentation &&
5949             (view->presentation_state == EV_PRESENTATION_BLACK ||
5950              view->presentation_state == EV_PRESENTATION_WHITE)) {
5951                 ev_view_reset_presentation_state (view);
5952                 return FALSE;
5953         }
5954
5955         if (view->animation) {
5956                 ev_view_transition_animation_finish (view->animation, view);
5957                 return TRUE;
5958         }
5959
5960         ev_view_presentation_transition_stop (view);
5961         ev_view_reset_presentation_state (view);
5962
5963         page = ev_page_cache_get_current_page (view->page_cache);
5964         n_pages = ev_page_cache_get_n_pages (view->page_cache);
5965
5966         if (view->dual_page && !view->presentation)
5967                 page = page + 2;
5968         else
5969                 page = page + 1;
5970
5971         if (page < n_pages) {
5972                 ev_page_cache_set_current_page (view->page_cache, page);
5973                 return TRUE;
5974         } else if (view->presentation && page == n_pages) {
5975                 view->presentation_state = EV_PRESENTATION_END;
5976                 gtk_widget_queue_draw (GTK_WIDGET (view));
5977                 return TRUE;
5978         } else if (view->dual_page && page == n_pages) {
5979                 ev_page_cache_set_current_page (view->page_cache, page - 1);
5980                 return TRUE;
5981         } else {
5982                 return FALSE;
5983         }
5984 }
5985
5986 gboolean
5987 ev_view_previous_page (EvView *view)
5988 {
5989         int page;
5990
5991         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
5992
5993         if (!view->page_cache)
5994                 return FALSE;
5995
5996         if (view->presentation &&
5997             view->presentation_state == EV_PRESENTATION_END) {
5998                 ev_view_reset_presentation_state (view);
5999                 return TRUE;
6000         }
6001
6002         if (view->presentation &&
6003             (view->presentation_state == EV_PRESENTATION_BLACK ||
6004              view->presentation_state == EV_PRESENTATION_WHITE)) {
6005                 ev_view_reset_presentation_state (view);
6006                 return FALSE;
6007         }
6008
6009         if (view->animation) {
6010                 ev_view_transition_animation_finish (view->animation, view);
6011                 return TRUE;
6012         }
6013
6014         ev_view_reset_presentation_state (view);
6015
6016         page = ev_page_cache_get_current_page (view->page_cache);
6017
6018         if (view->dual_page && !view->presentation)
6019                 page = page - 2;
6020         else
6021                 page = page - 1;
6022
6023         if (page >= 0) {
6024                 ev_page_cache_set_current_page (view->page_cache, page);
6025                 return TRUE;
6026         } else if (ev_view_get_dual_page (view) && page == -1) {
6027                 ev_page_cache_set_current_page (view->page_cache, 0);
6028                 return TRUE;
6029         } else {
6030                 return FALSE;
6031         }
6032 }
6033
6034 /*** Enum description for usage in signal ***/
6035
6036 GType
6037 ev_sizing_mode_get_type (void)
6038 {
6039   static GType etype = 0;
6040   if (etype == 0) {
6041     static const GEnumValue values[] = {
6042       { EV_SIZING_FIT_WIDTH, "EV_SIZING_FIT_WIDTH", "fit-width" },
6043       { EV_SIZING_BEST_FIT, "EV_SIZING_BEST_FIT", "best-fit" },
6044       { EV_SIZING_FREE, "EV_SIZING_FREE", "free" },
6045       { 0, NULL, NULL }
6046     };
6047     etype = g_enum_register_static ("EvSizingMode", values);
6048   }
6049   return etype;
6050 }
6051
6052 GType
6053 ev_scroll_type_get_type (void)
6054 {
6055   static GType etype = 0;
6056   if (etype == 0) {
6057     static const GEnumValue values[] = {
6058       { EV_SCROLL_PAGE_FORWARD, "EV_SCROLL_PAGE_FORWARD", "scroll-page-forward" },
6059       { EV_SCROLL_PAGE_BACKWARD, "EV_SCROLL_PAGE_BACKWARD", "scroll-page-backward" },
6060       { EV_SCROLL_STEP_FORWARD, "EV_SCROLL_STEP_FORWARD", "scroll-step-forward" },
6061       { EV_SCROLL_STEP_FORWARD, "EV_SCROLL_STEP_FORWARD", "scroll-step-forward" },
6062       { EV_SCROLL_STEP_UP, "EV_SCROLL_STEP_UP", "scroll-step-up" },
6063       { EV_SCROLL_STEP_DOWN, "EV_SCROLL_STEP_DOWN", "scroll-step-down" },
6064       { 0, NULL, NULL }
6065     };
6066     etype = g_enum_register_static ("EvScrollType", values);
6067   }
6068   return etype;
6069 }
6070
6071 void
6072 ev_view_update_view_size (EvView *view, GtkScrolledWindow * scrolled_window)
6073 {
6074         int width, height;
6075         GtkRequisition vsb_requisition;
6076         GtkRequisition hsb_requisition;
6077         int scrollbar_spacing;
6078
6079         /* Calculate the width available for the content */
6080         width  = GTK_WIDGET (scrolled_window)->allocation.width;
6081         height = GTK_WIDGET (scrolled_window)->allocation.height;
6082
6083         if (gtk_scrolled_window_get_shadow_type (scrolled_window) == GTK_SHADOW_IN
6084             && view) {
6085                 width -=  2 * GTK_WIDGET(view)->style->xthickness;
6086                 height -= 2 * GTK_WIDGET(view)->style->ythickness;
6087         }
6088
6089         gtk_widget_size_request (scrolled_window->vscrollbar, &vsb_requisition);
6090         gtk_widget_size_request (scrolled_window->hscrollbar, &hsb_requisition);
6091         gtk_widget_style_get (GTK_WIDGET (scrolled_window),
6092                               "scrollbar_spacing",
6093                               &scrollbar_spacing,
6094                               NULL);
6095
6096         if (EV_IS_VIEW(view)) {
6097                 ev_view_set_zoom_for_size (EV_VIEW (view),
6098                                            MAX (1, width),
6099                                            MAX (1, height),
6100                                            vsb_requisition.width + scrollbar_spacing,
6101                                            hsb_requisition.height + scrollbar_spacing);
6102         }
6103 }