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 <stdlib.h>
  22 #include <math.h>
  23 #include <string.h>
  24 #include <gtk/gtkalignment.h>
  25 #include <glib/gi18n.h>
  26 #include <gtk/gtkbindings.h>
  27 #include <gtk/gtkselection.h>
  28 #include <gtk/gtkclipboard.h>
  29 #include <gdk/gdkkeysyms.h>
  30
  31 #include "ev-marshal.h"
  32 #include "ev-view.h"
  33 #include "ev-view-private.h"
  34 #include "ev-utils.h"
  35 #include "ev-document-links.h"
  36 #include "ev-document-images.h"
  37 #include "ev-document-find.h"
  38 #include "ev-document-transition.h"
  39 #include "ev-document-forms.h"
  40 #include "ev-document-misc.h"
  41 #include "ev-job-queue.h"
  42 #include "ev-page-cache.h"
  43 #include "ev-pixbuf-cache.h"
  44 #if !GTK_CHECK_VERSION (2, 11, 7)
  45 #include "ev-tooltip.h"
  46 #endif
  47 #include "ev-application.h"
  48
  49 #define EV_VIEW_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass), EV_TYPE_VIEW, EvViewClass))
  50 #define EV_IS_VIEW_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), EV_TYPE_VIEW))
  51 #define EV_VIEW_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj), EV_TYPE_VIEW, EvViewClass))
  52
  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       selection_free                             (EvViewSelection    *selection);
 322 static char*      get_selected_text                          (EvView             *ev_view);
 323 static void       ev_view_primary_get_cb                     (GtkClipboard       *clipboard,
 324                                                               GtkSelectionData   *selection_data,
 325                                                               guint               info,
 326                                                               gpointer            data);
 327 static void       ev_view_primary_clear_cb                   (GtkClipboard       *clipboard,
 328                                                               gpointer            data);
 329 static void       ev_view_update_primary_selection           (EvView             *ev_view);
 330
 331 /*** Presentation ***/
 332 static void       ev_view_presentation_transition_start      (EvView             *ev_view);
 333 static void       ev_view_presentation_transition_stop       (EvView             *ev_view);
 334
 335
 336 G_DEFINE_TYPE (EvView, ev_view, GTK_TYPE_LAYOUT)
 337
 338 static void
 339 scroll_to_current_page (EvView *view, GtkOrientation orientation)
 340 {
 341         GdkPoint view_point;
 342
 343         if (view->document == NULL) {
 344                 return;
 345         }
 346
 347         doc_point_to_view_point (view, view->current_page, &view->pending_point, &view_point);
 348
 349         if (orientation == GTK_ORIENTATION_VERTICAL) {
 350                 view->pending_point.y = 0;
 351         } else {
 352                 view->pending_point.x = 0;
 353         }
 354
 355         if (orientation == GTK_ORIENTATION_VERTICAL) {
 356                 if (view->continuous) {
 357                         gtk_adjustment_clamp_page (view->vadjustment,
 358                                                    view_point.y - view->spacing / 2,
 359                                                    view_point.y + view->vadjustment->page_size);
 360                 } else {
 361                         gtk_adjustment_set_value (view->vadjustment,
 362                                                   CLAMP (view_point.y,
 363                                                   view->vadjustment->lower,
 364                                                   view->vadjustment->upper -
 365                                                   view->vadjustment->page_size));
 366                 }
 367         } else {
 368                 if (view->dual_page) {
 369                         gtk_adjustment_clamp_page (view->hadjustment,
 370                                                    view_point.x,
 371                                                    view_point.x + view->hadjustment->page_size);
 372                 } else {
 373                         gtk_adjustment_set_value (view->hadjustment,
 374                                                   CLAMP (view_point.x,
 375                                                   view->hadjustment->lower,
 376                                                   view->hadjustment->upper -
 377                                                   view->hadjustment->page_size));
 378                 }
 379         }
 380 }
 381
 382 static void
 383 view_set_adjustment_values (EvView         *view,
 384                             GtkOrientation  orientation)
 385 {
 386         GtkWidget *widget = GTK_WIDGET (view);
 387         GtkAdjustment *adjustment;
 388         int requisition;
 389         int allocation;
 390
 391         double factor;
 392         gint new_value;
 393
 394         if (orientation == GTK_ORIENTATION_HORIZONTAL)  {
 395                 requisition = widget->requisition.width;
 396                 allocation = widget->allocation.width;
 397                 adjustment = view->hadjustment;
 398         } else {
 399                 requisition = widget->requisition.height;
 400                 allocation = widget->allocation.height;
 401                 adjustment = view->vadjustment;
 402         }
 403
 404         if (!adjustment)
 405                 return;
 406
 407         factor = 1.0;
 408         switch (view->pending_scroll) {
 409                 case SCROLL_TO_KEEP_POSITION:
 410                 case SCROLL_TO_FIND_LOCATION:
 411                         factor = (adjustment->value) / adjustment->upper;
 412                         break;
 413                 case SCROLL_TO_PAGE_POSITION:
 414                         break;
 415                 case SCROLL_TO_CENTER:
 416                         factor = (adjustment->value + adjustment->page_size * 0.5) / adjustment->upper;
 417                         break;
 418         }
 419
 420         adjustment->page_size = allocation;
 421         adjustment->step_increment = allocation * 0.1;
 422         adjustment->page_increment = allocation * 0.9;
 423         adjustment->lower = 0;
 424         adjustment->upper = MAX (allocation, requisition);
 425
 426         /*
 427          * We add 0.5 to the values before to average out our rounding errors.
 428          */
 429         switch (view->pending_scroll) {
 430                 case SCROLL_TO_KEEP_POSITION:
 431                 case SCROLL_TO_FIND_LOCATION:
 432                         new_value = CLAMP (adjustment->upper * factor + 0.5, 0, adjustment->upper - adjustment->page_size);
 433                         gtk_adjustment_set_value (adjustment, (int)new_value);
 434                         break;
 435                 case SCROLL_TO_PAGE_POSITION:
 436                         scroll_to_current_page (view, orientation);
 437                         break;
 438                 case SCROLL_TO_CENTER:
 439                         new_value = CLAMP (adjustment->upper * factor - adjustment->page_size * 0.5 + 0.5,
 440                                            0, adjustment->upper - adjustment->page_size);
 441                         gtk_adjustment_set_value (adjustment, (int)new_value);
 442                         break;
 443         }
 444
 445         gtk_adjustment_changed (adjustment);
 446 }
 447
 448 static void
 449 view_update_range_and_current_page (EvView *view)
 450 {
 451         gint current_page;
 452         gint best_current_page = -1;
 453
 454         /* Presentation trumps all other modes */
 455         if (view->presentation) {
 456                 view->start_page = view->current_page;
 457                 view->end_page = view->current_page;
 458         } else if (view->continuous) {
 459                 GdkRectangle current_area, unused, page_area;
 460                 GtkBorder border;
 461                 gboolean found = FALSE;
 462                 gint area_max = -1, area;
 463                 int i;
 464
 465                 if (!(view->vadjustment && view->hadjustment))
 466                         return;
 467
 468                 current_area.x = view->hadjustment->value;
 469                 current_area.width = view->hadjustment->upper;
 470                 current_area.y = view->vadjustment->value;
 471                 current_area.height = view->vadjustment->page_size;
 472
 473                 for (i = 0; i < ev_page_cache_get_n_pages (view->page_cache); i++) {
 474
 475                         get_page_extents (view, i, &page_area, &border);
 476
 477                         if (gdk_rectangle_intersect (&current_area, &page_area, &unused)) {
 478                                 area = unused.width * unused.height;
 479
 480                                 if (!found) {
 481                                         area_max = area;
 482                                         view->start_page = i;
 483                                         found = TRUE;
 484                                         best_current_page = i;
 485                                 }
 486                                 if (area > area_max) {
 487                                         best_current_page = (area == area_max) ? MIN (i, best_current_page) : i;
 488                                         area_max = area;
 489                                 }
 490
 491                                 view->end_page = i;
 492                         } else if (found && view->current_page <= view->end_page) {
 493                                 break;
 494                         }
 495                 }
 496
 497         } else if (view->dual_page) {
 498                 if (view->current_page % 2 == ev_page_cache_get_dual_even_left (view->page_cache)) {
 499                         view->start_page = view->current_page;
 500                         if (view->current_page + 1 < ev_page_cache_get_n_pages (view->page_cache))
 501                                 view->end_page = view->start_page + 1;
 502                         else
 503                                 view->end_page = view->start_page;
 504                 } else {
 505                         if (view->current_page < 1)
 506                                 view->start_page = view->current_page;
 507                         else
 508                                 view->start_page = view->current_page - 1;
 509                         view->end_page = view->current_page;
 510                 }
 511         } else {
 512                 view->start_page = view->current_page;
 513                 view->end_page = view->current_page;
 514         }
 515
 516         best_current_page = MAX (best_current_page, view->start_page);
 517         current_page = ev_page_cache_get_current_page (view->page_cache);
 518
 519         if ((current_page != best_current_page) && (view->pending_scroll == SCROLL_TO_KEEP_POSITION)) {
 520                 view->current_page = best_current_page;
 521                 ev_page_cache_set_current_page (view->page_cache, best_current_page);
 522         }
 523
 524         ev_pixbuf_cache_set_page_range (view->pixbuf_cache,
 525                                         view->start_page,
 526                                         view->end_page,
 527                                         view->rotation,
 528                                         view->scale,
 529                                         view->selection_info.selections);
 530 }
 531
 532 static void
 533 set_scroll_adjustment (EvView *view,
 534                        GtkOrientation  orientation,
 535                        GtkAdjustment  *adjustment)
 536 {
 537         GtkAdjustment **to_set;
 538
 539         if (orientation == GTK_ORIENTATION_HORIZONTAL)
 540                 to_set = &view->hadjustment;
 541         else
 542                 to_set = &view->vadjustment;
 543
 544         if (*to_set != adjustment) {
 545                 if (*to_set) {
 546                         g_signal_handlers_disconnect_by_func (*to_set,
 547                                                               (gpointer) on_adjustment_value_changed,
 548                                                               view);
 549                         g_object_unref (*to_set);
 550                 }
 551
 552                 *to_set = adjustment;
 553                 view_set_adjustment_values (view, orientation);
 554
 555                 if (*to_set) {
 556                         g_object_ref (*to_set);
 557                         g_signal_connect (*to_set, "value_changed",
 558                                           G_CALLBACK (on_adjustment_value_changed), view);
 559                 }
 560         }
 561 }
 562
 563 static void
 564 ev_view_set_scroll_adjustments (GtkLayout      *layout,
 565                                 GtkAdjustment  *hadjustment,
 566                                 GtkAdjustment  *vadjustment)
 567 {
 568         EvView *view = EV_VIEW (layout);
 569
 570         set_scroll_adjustment (view, GTK_ORIENTATION_HORIZONTAL, hadjustment);
 571         set_scroll_adjustment (view, GTK_ORIENTATION_VERTICAL, vadjustment);
 572
 573         on_adjustment_value_changed (NULL, view);
 574 }
 575
 576 static void
 577 add_scroll_binding_keypad (GtkBindingSet  *binding_set,
 578                            guint           keyval,
 579                            GdkModifierType modifiers,
 580                            EvScrollType    scroll,
 581                            gboolean        horizontal)
 582 {
 583   guint keypad_keyval = keyval - GDK_Left + GDK_KP_Left;
 584
 585   gtk_binding_entry_add_signal (binding_set, keyval, modifiers,
 586                                 "binding_activated", 2,
 587                                 EV_TYPE_SCROLL_TYPE, scroll,
 588                                 G_TYPE_BOOLEAN, horizontal);
 589   gtk_binding_entry_add_signal (binding_set, keypad_keyval, modifiers,
 590                                 "binding_activated", 2,
 591                                 EV_TYPE_SCROLL_TYPE, scroll,
 592                                 G_TYPE_BOOLEAN, horizontal);
 593 }
 594
 595 void
 596 ev_view_scroll (EvView        *view,
 597                 EvScrollType   scroll,
 598                 gboolean horizontal)
 599 {
 600         GtkAdjustment *adjustment;
 601         double value, increment;
 602         gboolean first_page = FALSE;
 603         gboolean last_page = FALSE;
 604
 605         view->jump_to_find_result = FALSE;
 606
 607         if (view->presentation || view->sizing_mode == EV_SIZING_BEST_FIT) {
 608                 switch (scroll) {
 609                         case EV_SCROLL_PAGE_BACKWARD:
 610                         case EV_SCROLL_STEP_BACKWARD:
 611                                 ev_view_previous_page (view);
 612                                 break;
 613                         case EV_SCROLL_PAGE_FORWARD:
 614                         case EV_SCROLL_STEP_FORWARD:
 615                                 ev_view_next_page (view);
 616                                 break;
 617                         default:
 618                                 break;
 619                 }
 620                 return;
 621         }
 622
 623         /* Assign values for increment and vertical adjustment */
 624         adjustment = horizontal ? view->hadjustment : view->vadjustment;
 625         increment = adjustment->page_size * 0.75;
 626         value = adjustment->value;
 627
 628         /* Assign boolean for first and last page */
 629         if (view->current_page == 0)
 630                 first_page = TRUE;
 631         if (view->current_page == ev_page_cache_get_n_pages (view->page_cache) - 1)
 632                 last_page = TRUE;
 633
 634         switch (scroll) {
 635                 case EV_SCROLL_PAGE_BACKWARD:
 636                         /* Do not jump backwards if at the first page */
 637                         if (value == (adjustment->lower) && first_page) {
 638                                 /* Do nothing */
 639                                 /* At the top of a page, assign the upper bound limit of previous page */
 640                         } else if (value == (adjustment->lower)) {
 641                                 value = adjustment->upper - adjustment->page_size;
 642                                 ev_view_previous_page (view);
 643                                 /* Jump to the top */
 644                         } else {
 645                                 value = MAX (value - increment, adjustment->lower);
 646                         }
 647                         break;
 648                 case EV_SCROLL_PAGE_FORWARD:
 649                         /* Do not jump forward if at the last page */
 650                         if (value == (adjustment->upper - adjustment->page_size) && last_page) {
 651                                 /* Do nothing */
 652                         /* At the bottom of a page, assign the lower bound limit of next page */
 653                         } else if (value == (adjustment->upper - adjustment->page_size)) {
 654                                 value = 0;
 655                                 ev_view_next_page (view);
 656                         /* Jump to the bottom */
 657                         } else {
 658                                 value = MIN (value + increment, adjustment->upper - adjustment->page_size);
 659                         }
 660                         break;
 661                 case EV_SCROLL_STEP_BACKWARD:
 662                         value -= adjustment->step_increment;
 663                         break;
 664                 case EV_SCROLL_STEP_FORWARD:
 665                         value += adjustment->step_increment;
 666                         break;
 667                 case EV_SCROLL_STEP_DOWN:
 668                         value -= adjustment->step_increment / 10;
 669                         break;
 670                 case EV_SCROLL_STEP_UP:
 671                         value += adjustment->step_increment / 10;
 672                         break;
 673                 default:
 674                         break;
 675         }
 676
 677         value = CLAMP (value, adjustment->lower,
 678                        adjustment->upper - adjustment->page_size);
 679
 680         gtk_adjustment_set_value (adjustment, value);
 681 }
 682
 683 #define MARGIN 5
 684
 685 static void
 686 ensure_rectangle_is_visible (EvView *view, GdkRectangle *rect)
 687 {
 688         GtkWidget *widget = GTK_WIDGET (view);
 689         GtkAdjustment *adjustment;
 690         int value;
 691
 692         view->pending_scroll = SCROLL_TO_FIND_LOCATION;
 693
 694         adjustment = view->vadjustment;
 695
 696         if (rect->y < adjustment->value) {
 697                 value = MAX (adjustment->lower, rect->y - MARGIN);
 698                 gtk_adjustment_set_value (view->vadjustment, value);
 699         } else if (rect->y + rect->height >
 700                    adjustment->value + widget->allocation.height) {
 701                 value = MIN (adjustment->upper, rect->y + rect->height -
 702                              widget->allocation.height + MARGIN);
 703                 gtk_adjustment_set_value (view->vadjustment, value);
 704         }
 705
 706         adjustment = view->hadjustment;
 707
 708         if (rect->x < adjustment->value) {
 709                 value = MAX (adjustment->lower, rect->x - MARGIN);
 710                 gtk_adjustment_set_value (view->hadjustment, value);
 711         } else if (rect->x + rect->height >
 712                    adjustment->value + widget->allocation.width) {
 713                 value = MIN (adjustment->upper, rect->x + rect->width -
 714                              widget->allocation.width + MARGIN);
 715                 gtk_adjustment_set_value (view->hadjustment, value);
 716         }
 717
 718         gtk_widget_queue_resize (GTK_WIDGET (view));
 719 }
 720
 721 /*** Geometry computations ***/
 722
 723 static void
 724 compute_border (EvView *view, int width, int height, GtkBorder *border)
 725 {
 726         if (view->presentation) {
 727                 border->left = 0;
 728                 border->right = 0;
 729                 border->top = 0;
 730                 border->bottom = 0;
 731         } else {
 732                 ev_document_misc_get_page_border_size (width, height, border);
 733         }
 734 }
 735
 736 static void
 737 get_page_y_offset (EvView *view, int page, double zoom, int *y_offset)
 738 {
 739         int max_width, offset;
 740         GtkBorder border;
 741
 742         g_return_if_fail (y_offset != NULL);
 743
 744         ev_page_cache_get_max_width (view->page_cache, view->rotation, zoom, &max_width);
 745
 746         compute_border (view, max_width, max_width, &border);
 747
 748         if (view->dual_page) {
 749                 ev_page_cache_get_height_to_page (view->page_cache, page,
 750                                                   view->rotation, zoom, NULL, &offset);
 751                 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);
 752         } else {
 753                 ev_page_cache_get_height_to_page (view->page_cache, page,
 754                                                   view->rotation, zoom, &offset, NULL);
 755                 offset += (page + 1) * view->spacing + page * (border.top + border.bottom);
 756         }
 757
 758         *y_offset = offset;
 759         return;
 760 }
 761
 762 static gboolean
 763 get_page_extents (EvView       *view,
 764                   gint          page,
 765                   GdkRectangle *page_area,
 766                   GtkBorder    *border)
 767 {
 768         GtkWidget *widget;
 769         int width, height;
 770
 771         widget = GTK_WIDGET (view);
 772
 773         /* Get the size of the page */
 774         ev_page_cache_get_size (view->page_cache, page,
 775                                 view->rotation,
 776                                 view->scale,
 777                                 &width, &height);
 778         compute_border (view, width, height, border);
 779         page_area->width = width + border->left + border->right;
 780         page_area->height = height + border->top + border->bottom;
 781
 782         if (view->presentation) {
 783                 page_area->x = (MAX (0, widget->allocation.width - width))/2;
 784                 page_area->y = (MAX (0, widget->allocation.height - height))/2;
 785         } else if (view->continuous) {
 786                 gint max_width;
 787                 gint x, y;
 788
 789                 ev_page_cache_get_max_width (view->page_cache, view->rotation,
 790                                              view->scale, &max_width);
 791                 max_width = max_width + border->left + border->right;
 792                 /* Get the location of the bounding box */
 793                 if (view->dual_page) {
 794                         x = view->spacing + ((page % 2 == ev_page_cache_get_dual_even_left (view->page_cache)) ? 0 : 1) * (max_width + view->spacing);
 795                         x = x + MAX (0, widget->allocation.width - (max_width * 2 + view->spacing * 3)) / 2;
 796                         if (page % 2 == ev_page_cache_get_dual_even_left (view->page_cache))
 797                                 x = x + (max_width - width - border->left - border->right);
 798                 } else {
 799                         x = view->spacing;
 800                         x = x + MAX (0, widget->allocation.width - (width + view->spacing * 2)) / 2;
 801                 }
 802
 803                 get_page_y_offset (view, page, view->scale, &y);
 804
 805                 page_area->x = x;
 806                 page_area->y = y;
 807         } else {
 808                 gint x, y;
 809                 if (view->dual_page) {
 810                         gint width_2, height_2;
 811                         gint max_width = width;
 812                         gint max_height = height;
 813                         GtkBorder overall_border;
 814                         gint other_page;
 815
 816                         other_page = (page % 2 == ev_page_cache_get_dual_even_left (view->page_cache)) ? page + 1: page - 1;
 817
 818                         /* First, we get the bounding box of the two pages */
 819                         if (other_page < ev_page_cache_get_n_pages (view->page_cache)
 820                             && (0 <= other_page)) {
 821                                 ev_page_cache_get_size (view->page_cache,
 822                                                         other_page,
 823                                                         view->rotation,
 824                                                         view->scale,
 825                                                         &width_2, &height_2);
 826                                 if (width_2 > width)
 827                                         max_width = width_2;
 828                                 if (height_2 > height)
 829                                         max_height = height_2;
 830                         }
 831                         compute_border (view, max_width, max_height, &overall_border);
 832
 833                         /* Find the offsets */
 834                         x = view->spacing;
 835                         y = view->spacing;
 836
 837                         /* Adjust for being the left or right page */
 838                         if (page % 2 == ev_page_cache_get_dual_even_left (view->page_cache))
 839                                 x = x + max_width - width;
 840                         else
 841                                 x = x + (max_width + overall_border.left + overall_border.right) + view->spacing;
 842
 843                         y = y + (max_height - height)/2;
 844
 845                         /* Adjust for extra allocation */
 846                         x = x + MAX (0, widget->allocation.width -
 847                                      ((max_width + overall_border.left + overall_border.right) * 2 + view->spacing * 3))/2;
 848                         y = y + MAX (0, widget->allocation.height - (height + view->spacing * 2))/2;
 849                 } else {
 850                         x = view->spacing;
 851                         y = view->spacing;
 852
 853                         /* Adjust for extra allocation */
 854                         x = x + MAX (0, widget->allocation.width - (width + border->left + border->right + view->spacing * 2))/2;
 855                         y = y + MAX (0, widget->allocation.height - (height + border->top + border->bottom +  view->spacing * 2))/2;
 856                 }
 857
 858                 page_area->x = x;
 859                 page_area->y = y;
 860         }
 861
 862         return TRUE;
 863 }
 864
 865 static void
 866 view_point_to_doc_point (EvView *view,
 867                          GdkPoint *view_point,
 868                          GdkRectangle *page_area,
 869                          double  *doc_point_x,
 870                          double  *doc_point_y)
 871 {
 872         *doc_point_x = (double) (view_point->x - page_area->x) / view->scale;
 873         *doc_point_y = (double) (view_point->y - page_area->y) / view->scale;
 874 }
 875
 876 static void
 877 view_rect_to_doc_rect (EvView *view,
 878                        GdkRectangle *view_rect,
 879                        GdkRectangle *page_area,
 880                        EvRectangle  *doc_rect)
 881 {
 882         doc_rect->x1 = (double) (view_rect->x - page_area->x) / view->scale;
 883         doc_rect->y1 = (double) (view_rect->y - page_area->y) / view->scale;
 884         doc_rect->x2 = doc_rect->x1 + (double) view_rect->width / view->scale;
 885         doc_rect->y2 = doc_rect->y1 + (double) view_rect->height / view->scale;
 886 }
 887
 888 static gboolean
 889 doc_point_to_view_point (EvView       *view,
 890                          int           page,
 891                          EvPoint      *doc_point,
 892                          GdkPoint     *view_point)
 893 {
 894         GdkRectangle page_area;
 895         GtkBorder border;
 896         double x, y, view_x, view_y;
 897         int width, height;
 898
 899         ev_page_cache_get_size (view->page_cache, page,
 900                                 view->rotation,
 901                                 1.0,
 902                                 &width, &height);
 903
 904         if (view->rotation == 0) {
 905                 x = doc_point->x;
 906                 y = doc_point->y;
 907         } else if (view->rotation == 90) {
 908                 x = width - doc_point->y;
 909                 y = doc_point->x;
 910         } else if (view->rotation == 180) {
 911                 x = width - doc_point->x;
 912                 y = height - doc_point->y;
 913         } else if (view->rotation == 270) {
 914                 x = doc_point->y;
 915                 y = height - doc_point->x;
 916         } else {
 917                 g_assert_not_reached ();
 918         }
 919
 920         get_page_extents (view, page, &page_area, &border);
 921
 922         view_x = x * view->scale;
 923         view_y = y * view->scale;
 924         view_point->x = view_x + page_area.x;
 925         view_point->y = view_y + page_area.y;
 926
 927         return (view_x > 0 && view_x <= page_area.width &&
 928                 view_y > 0 && view_y <= page_area.height);
 929 }
 930
 931 static void
 932 doc_rect_to_view_rect (EvView       *view,
 933                        int           page,
 934                        EvRectangle  *doc_rect,
 935                        GdkRectangle *view_rect)
 936 {
 937         GdkRectangle page_area;
 938         GtkBorder border;
 939         double x, y, w, h;
 940         int width, height;
 941
 942         ev_page_cache_get_size (view->page_cache, page,
 943                                 view->rotation,
 944                                 1.0,
 945                                 &width, &height);
 946
 947         if (view->rotation == 0) {
 948                 x = doc_rect->x1;
 949                 y = doc_rect->y1;
 950                 w = doc_rect->x2 - doc_rect->x1;
 951                 h = doc_rect->y2 - doc_rect->y1;
 952         } else if (view->rotation == 90) {
 953                 x = width - doc_rect->y2;
 954                 y = doc_rect->x1;
 955                 w = doc_rect->y2 - doc_rect->y1;
 956                 h = doc_rect->x2 - doc_rect->x1;
 957         } else if (view->rotation == 180) {
 958                 x = width - doc_rect->x2;
 959                 y = height - doc_rect->y2;
 960                 w = doc_rect->x2 - doc_rect->x1;
 961                 h = doc_rect->y2 - doc_rect->y1;
 962         } else if (view->rotation == 270) {
 963                 x = doc_rect->y1;
 964                 y = height - doc_rect->x2;
 965                 w = doc_rect->y2 - doc_rect->y1;
 966                 h = doc_rect->x2 - doc_rect->x1;
 967         } else {
 968                 g_assert_not_reached ();
 969         }
 970
 971         get_page_extents (view, page, &page_area, &border);
 972
 973         view_rect->x = x * view->scale + page_area.x;
 974         view_rect->y = y * view->scale + page_area.y;
 975         view_rect->width = w * view->scale;
 976         view_rect->height = h * view->scale;
 977 }
 978
 979 static void
 980 find_page_at_location (EvView  *view,
 981                        gdouble  x,
 982                        gdouble  y,
 983                        gint    *page,
 984                        gint    *x_offset,
 985                        gint    *y_offset)
 986 {
 987         int i;
 988
 989         if (view->document == NULL)
 990                 return;
 991
 992         g_assert (page);
 993         g_assert (x_offset);
 994         g_assert (y_offset);
 995
 996         for (i = view->start_page; i <= view->end_page; i++) {
 997                 GdkRectangle page_area;
 998                 GtkBorder border;
 999
1000                 if (! get_page_extents (view, i, &page_area, &border))
1001                         continue;
1002
1003                 if ((x >= page_area.x + border.left) &&
1004                     (x < page_area.x + page_area.width - border.right) &&
1005                     (y >= page_area.y + border.top) &&
1006                     (y < page_area.y + page_area.height - border.bottom)) {
1007                         *page = i;
1008                         *x_offset = x - (page_area.x + border.left);
1009                         *y_offset = y - (page_area.y + border.top);
1010                         return;
1011                 }
1012         }
1013
1014         *page = -1;
1015 }
1016
1017 static gboolean
1018 location_in_text (EvView  *view,
1019                   gdouble  x,
1020                   gdouble  y)
1021 {
1022         GdkRegion *region;
1023         gint page = -1;
1024         gint x_offset = 0, y_offset = 0;
1025
1026         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1027
1028         if (page == -1)
1029                 return FALSE;
1030
1031         region = ev_pixbuf_cache_get_text_mapping (view->pixbuf_cache, page);
1032
1033         if (region)
1034                 return gdk_region_point_in (region, x_offset / view->scale, y_offset / view->scale);
1035         else
1036                 return FALSE;
1037 }
1038
1039 static int
1040 ev_view_get_width (EvView *view)
1041 {
1042         return GTK_WIDGET (view)->allocation.width;
1043 }
1044
1045 static int
1046 ev_view_get_height (EvView *view)
1047 {
1048         return GTK_WIDGET (view)->allocation.height;
1049 }
1050
1051 static gboolean
1052 location_in_selected_text (EvView  *view,
1053                            gdouble  x,
1054                            gdouble  y)
1055 {
1056         gint page = -1;
1057         gint x_offset = 0, y_offset = 0;
1058         EvViewSelection *selection;
1059         GList *l = NULL;
1060
1061         for (l = view->selection_info.selections; l != NULL; l = l->next) {
1062                 selection = (EvViewSelection *)l->data;
1063
1064                 find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1065
1066                 if (page != selection->page)
1067                         continue;
1068
1069                 if (selection->covered_region &&
1070                     gdk_region_point_in (selection->covered_region, x_offset, y_offset))
1071                         return TRUE;
1072         }
1073
1074         return FALSE;
1075 }
1076
1077 static gboolean
1078 get_doc_point_from_offset (EvView *view,
1079                            gint    page,
1080                            gint    x_offset,
1081                            gint    y_offset,
1082                            gint   *x_new,
1083                            gint   *y_new)
1084 {
1085         int width, height;
1086         double x, y;
1087
1088         ev_page_cache_get_size (view->page_cache, page,
1089                                 view->rotation,
1090                                 1.0,
1091                                 &width, &height);
1092
1093         x_offset = x_offset / view->scale;
1094         y_offset = y_offset / view->scale;
1095
1096         if (view->rotation == 0) {
1097                 x = x_offset;
1098                 y = y_offset;
1099         } else if (view->rotation == 90) {
1100                 x = y_offset;
1101                 y = width - x_offset;
1102         } else if (view->rotation == 180) {
1103                 x = width - x_offset;
1104                 y = height - y_offset;
1105         } else if (view->rotation == 270) {
1106                 x = height - y_offset;
1107                 y = x_offset;
1108         } else {
1109                 g_assert_not_reached ();
1110         }
1111
1112         *x_new = x;
1113         *y_new = y;
1114
1115         return TRUE;
1116 }
1117
1118 /*** Hyperref ***/
1119 static EvLink *
1120 ev_view_get_link_at_location (EvView  *view,
1121                               gdouble  x,
1122                               gdouble  y)
1123 {
1124         gint page = -1;
1125         gint x_offset = 0, y_offset = 0;
1126         gint x_new = 0, y_new = 0;
1127         GList *link_mapping;
1128
1129         if (!EV_IS_DOCUMENT_LINKS (view->document))
1130                 return NULL;
1131
1132         x += view->scroll_x;
1133         y += view->scroll_y;
1134
1135         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1136
1137         if (page == -1)
1138                 return NULL;
1139
1140
1141         if (get_doc_point_from_offset (view, page, x_offset,
1142                                        y_offset, &x_new, &y_new) == FALSE)
1143                 return NULL;
1144
1145         link_mapping = ev_pixbuf_cache_get_link_mapping (view->pixbuf_cache, page);
1146
1147         if (link_mapping)
1148                 return ev_link_mapping_find (link_mapping, x_new, y_new);
1149         else
1150                 return NULL;
1151 }
1152
1153 static void
1154 goto_fitr_dest (EvView *view, EvLinkDest *dest)
1155 {
1156         EvPoint doc_point;
1157         double zoom;
1158
1159         zoom = zoom_for_size_best_fit (ev_link_dest_get_right (dest) - ev_link_dest_get_left (dest),
1160                                        ev_link_dest_get_bottom (dest) - ev_link_dest_get_top (dest),
1161                                        ev_view_get_width (view),
1162                                        ev_view_get_height (view), 0, 0);
1163
1164         ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1165         ev_view_set_zoom (view, zoom, FALSE);
1166
1167         doc_point.x = ev_link_dest_get_left (dest);
1168         doc_point.y = ev_link_dest_get_top (dest);
1169
1170         view->current_page = ev_link_dest_get_page (dest);
1171         view->pending_point = doc_point;
1172         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1173
1174         gtk_widget_queue_resize (GTK_WIDGET (view));
1175 }
1176
1177 static void
1178 goto_fitv_dest (EvView *view, EvLinkDest *dest)
1179 {
1180         EvPoint doc_point;
1181         int doc_width, doc_height, page;
1182         double zoom;
1183
1184         page = ev_link_dest_get_page (dest);
1185         ev_page_cache_get_size (view->page_cache, page, 0, 1.0, &doc_width, &doc_height);
1186
1187         doc_point.x = ev_link_dest_get_left (dest);
1188         doc_point.y = 0;
1189
1190         zoom = zoom_for_size_fit_height (doc_width - doc_point.x , doc_height,
1191                                          ev_view_get_width (view),
1192                                          ev_view_get_height (view), 0);
1193
1194         ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1195         ev_view_set_zoom (view, zoom, FALSE);
1196
1197         view->current_page = page;
1198         view->pending_point = doc_point;
1199         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1200
1201         gtk_widget_queue_resize (GTK_WIDGET (view));
1202 }
1203
1204 static void
1205 goto_fith_dest (EvView *view, EvLinkDest *dest)
1206 {
1207         EvPoint doc_point;
1208         int doc_width, doc_height, page;
1209         double zoom;
1210
1211         page = ev_link_dest_get_page (dest);
1212         ev_page_cache_get_size (view->page_cache, page, 0, 1.0, &doc_width, &doc_height);
1213
1214         doc_point.x = 0;
1215         doc_point.y = ev_link_dest_get_top (dest);
1216
1217         zoom = zoom_for_size_fit_width (doc_width, ev_link_dest_get_top (dest),
1218                                         ev_view_get_width (view),
1219                                         ev_view_get_height (view), 0);
1220
1221         ev_view_set_sizing_mode (view, EV_SIZING_FIT_WIDTH);
1222         ev_view_set_zoom (view, zoom, FALSE);
1223
1224         view->current_page = page;
1225         view->pending_point = doc_point;
1226         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1227
1228         gtk_widget_queue_resize (GTK_WIDGET (view));
1229 }
1230
1231 static void
1232 goto_fit_dest (EvView *view, EvLinkDest *dest)
1233 {
1234         double zoom;
1235         int doc_width, doc_height;
1236         int page;
1237
1238         page = ev_link_dest_get_page (dest);
1239         ev_page_cache_get_size (view->page_cache, page, 0, 1.0, &doc_width, &doc_height);
1240
1241         zoom = zoom_for_size_best_fit (doc_width, doc_height, ev_view_get_width (view),
1242                                        ev_view_get_height (view), 0, 0);
1243
1244         ev_view_set_sizing_mode (view, EV_SIZING_BEST_FIT);
1245         ev_view_set_zoom (view, zoom, FALSE);
1246
1247         view->current_page = page;
1248         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1249
1250         gtk_widget_queue_resize (GTK_WIDGET (view));
1251 }
1252
1253 static void
1254 goto_xyz_dest (EvView *view, EvLinkDest *dest)
1255 {
1256         EvPoint doc_point;
1257         gint page;
1258         double zoom;
1259
1260         zoom = ev_link_dest_get_zoom (dest);
1261         page = ev_link_dest_get_page (dest);
1262
1263         if (zoom > 1) {
1264                 ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1265                 ev_view_set_zoom (view, zoom, FALSE);
1266         }
1267
1268         doc_point.x = ev_link_dest_get_left (dest);
1269         doc_point.y = ev_link_dest_get_top (dest);
1270
1271         view->current_page = page;
1272         view->pending_point = doc_point;
1273         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1274
1275         gtk_widget_queue_resize (GTK_WIDGET (view));
1276 }
1277
1278 static void
1279 goto_dest (EvView *view, EvLinkDest *dest)
1280 {
1281         EvLinkDestType type;
1282         int page, n_pages, current_page;
1283
1284         page = ev_link_dest_get_page (dest);
1285         n_pages = ev_page_cache_get_n_pages (view->page_cache);
1286
1287         if (page < 0 || page >= n_pages)
1288                 return;
1289
1290         current_page = view->current_page;
1291
1292         type = ev_link_dest_get_dest_type (dest);
1293
1294         switch (type) {
1295                 case EV_LINK_DEST_TYPE_PAGE:
1296                         ev_page_cache_set_current_page (view->page_cache, page);
1297                         break;
1298                 case EV_LINK_DEST_TYPE_FIT:
1299                         goto_fit_dest (view, dest);
1300                         break;
1301                 case EV_LINK_DEST_TYPE_FITH:
1302                         goto_fith_dest (view, dest);
1303                         break;
1304                 case EV_LINK_DEST_TYPE_FITV:
1305                         goto_fitv_dest (view, dest);
1306                         break;
1307                 case EV_LINK_DEST_TYPE_FITR:
1308                         goto_fitr_dest (view, dest);
1309                         break;
1310                 case EV_LINK_DEST_TYPE_XYZ:
1311                         goto_xyz_dest (view, dest);
1312                         break;
1313                 case EV_LINK_DEST_TYPE_PAGE_LABEL:
1314                         ev_page_cache_set_page_label (view->page_cache, ev_link_dest_get_page_label (dest));
1315                         break;
1316                 default:
1317                         g_assert_not_reached ();
1318         }
1319
1320         if (current_page != view->current_page)
1321                 ev_page_cache_set_current_page (view->page_cache,
1322                                                 view->current_page);
1323 }
1324
1325 static void
1326 ev_view_goto_dest (EvView *view, EvLinkDest *dest)
1327 {
1328         EvLinkDestType type;
1329
1330         type = ev_link_dest_get_dest_type (dest);
1331
1332         if (type == EV_LINK_DEST_TYPE_NAMED) {
1333                 EvLinkDest  *dest2;
1334                 const gchar *named_dest;
1335
1336                 named_dest = ev_link_dest_get_named_dest (dest);
1337                 dest2 = ev_document_links_find_link_dest (EV_DOCUMENT_LINKS (view->document),
1338                                                           named_dest);
1339                 if (dest2) {
1340                         goto_dest (view, dest2);
1341                         g_object_unref (dest2);
1342                 }
1343
1344                 return;
1345         }
1346
1347         goto_dest (view, dest);
1348 }
1349
1350 void
1351 ev_view_handle_link (EvView *view, EvLink *link)
1352 {
1353         EvLinkAction    *action = NULL;
1354         EvLinkActionType type;
1355
1356         action = ev_link_get_action (link);
1357         if (!action)
1358                 return;
1359
1360         type = ev_link_action_get_action_type (action);
1361
1362         switch (type) {
1363                 case EV_LINK_ACTION_TYPE_GOTO_DEST: {
1364                         EvLinkDest *dest;
1365
1366                         g_signal_emit (view, signals[SIGNAL_HANDLE_LINK], 0, link);
1367
1368                         dest = ev_link_action_get_dest (action);
1369                         ev_view_goto_dest (view, dest);
1370                 }
1371                         break;
1372                 case EV_LINK_ACTION_TYPE_GOTO_REMOTE:
1373                 case EV_LINK_ACTION_TYPE_EXTERNAL_URI:
1374                 case EV_LINK_ACTION_TYPE_LAUNCH:
1375                 case EV_LINK_ACTION_TYPE_NAMED:
1376                         g_signal_emit (view, signals[SIGNAL_EXTERNAL_LINK], 0, action);
1377                         break;
1378         }
1379 }
1380
1381 gchar *
1382 ev_view_page_label_from_dest (EvView *view, EvLinkDest *dest)
1383 {
1384         EvLinkDestType type;
1385         gchar *msg = NULL;
1386
1387         type = ev_link_dest_get_dest_type (dest);
1388
1389         switch (type) {
1390                 case EV_LINK_DEST_TYPE_NAMED: {
1391                         EvLinkDest  *dest2;
1392                         const gchar *named_dest;
1393
1394                         named_dest = ev_link_dest_get_named_dest (dest);
1395                         dest2 = ev_document_links_find_link_dest (EV_DOCUMENT_LINKS (view->document),
1396                                                                   named_dest);
1397                         if (dest2) {
1398                                 msg = ev_page_cache_get_page_label (view->page_cache,
1399                                                                     ev_link_dest_get_page (dest2));
1400                                 g_object_unref (dest2);
1401                         }
1402                 }
1403
1404                         break;
1405                 case EV_LINK_DEST_TYPE_PAGE_LABEL: {
1406                         msg = g_strdup (ev_link_dest_get_page_label (dest));
1407                 }
1408                         break;
1409                 default:
1410                         msg = ev_page_cache_get_page_label (view->page_cache,
1411                                                             ev_link_dest_get_page (dest));
1412         }
1413
1414         return msg;
1415 }
1416
1417 static char *
1418 tip_from_action_named (EvLinkAction *action)
1419 {
1420         const gchar *name = ev_link_action_get_name (action);
1421
1422         if (g_ascii_strcasecmp (name, "FirstPage") == 0) {
1423                 return g_strdup (_("Go to first page"));
1424         } else if (g_ascii_strcasecmp (name, "PrevPage") == 0) {
1425                 return g_strdup (_("Go to previous page"));
1426         } else if (g_ascii_strcasecmp (name, "NextPage") == 0) {
1427                 return g_strdup (_("Go to next page"));
1428         } else if (g_ascii_strcasecmp (name, "LastPage") == 0) {
1429                 return g_strdup (_("Go to last page"));
1430         } else if (g_ascii_strcasecmp (name, "GoToPage") == 0) {
1431                 return g_strdup (_("Go to page"));
1432         } else if (g_ascii_strcasecmp (name, "Find") == 0) {
1433                 return g_strdup (_("Find"));
1434         }
1435
1436         return NULL;
1437 }
1438
1439 static char *
1440 tip_from_link (EvView *view, EvLink *link)
1441 {
1442         EvLinkAction *action;
1443         EvLinkActionType type;
1444         char *msg = NULL;
1445         char *page_label;
1446         const char *title;
1447
1448         action = ev_link_get_action (link);
1449         title = ev_link_get_title (link);
1450
1451         if (!action)
1452                 return title ? g_strdup (title) : NULL;
1453
1454         type = ev_link_action_get_action_type (action);
1455
1456         switch (type) {
1457                 case EV_LINK_ACTION_TYPE_GOTO_DEST:
1458                         page_label = ev_view_page_label_from_dest (view,
1459                                                                    ev_link_action_get_dest (action));
1460                         if (page_label) {
1461                                 msg = g_strdup_printf (_("Go to page %s"), page_label);
1462                                 g_free (page_label);
1463                         }
1464                         break;
1465                 case EV_LINK_ACTION_TYPE_GOTO_REMOTE:
1466                         if (title) {
1467                                 msg = g_strdup_printf (_("Go to %s on file “%s”"), title,
1468                                                        ev_link_action_get_filename (action));
1469                         } else {
1470                                 msg = g_strdup_printf (_("Go to file “%s”"),
1471                                                        ev_link_action_get_filename (action));
1472                         }
1473                         break;
1474                 case EV_LINK_ACTION_TYPE_EXTERNAL_URI:
1475                         msg = g_strdup (ev_link_action_get_uri (action));
1476                         break;
1477                 case EV_LINK_ACTION_TYPE_LAUNCH:
1478                         msg = g_strdup_printf (_("Launch %s"),
1479                                                ev_link_action_get_filename (action));
1480                         break;
1481                 case EV_LINK_ACTION_TYPE_NAMED:
1482                         msg = tip_from_action_named (action);
1483                         break;
1484                 default:
1485                         if (title)
1486                                 msg = g_strdup (title);
1487                         break;
1488         }
1489
1490         return msg;
1491 }
1492
1493 static void
1494 ev_view_handle_cursor_over_xy (EvView *view, gint x, gint y)
1495 {
1496         EvLink      *link;
1497         EvFormField *field;
1498
1499         if (view->cursor == EV_VIEW_CURSOR_HIDDEN)
1500                 return;
1501
1502         if (view->drag_info.in_drag) {
1503                 if (view->cursor != EV_VIEW_CURSOR_DRAG)
1504                         ev_view_set_cursor (view, EV_VIEW_CURSOR_DRAG);
1505                 return;
1506         }
1507
1508         link = ev_view_get_link_at_location (view, x, y);
1509
1510 #if !GTK_CHECK_VERSION (2, 11, 7)
1511         if (view->link_tooltip == NULL) {
1512                 view->link_tooltip = ev_tooltip_new (GTK_WIDGET (view));
1513         }
1514
1515         if (view->hovered_link != link) {
1516                 view->hovered_link = link;
1517                 ev_tooltip_deactivate (EV_TOOLTIP (view->link_tooltip));
1518         }
1519 #endif
1520
1521         if (link) {
1522 #if GTK_CHECK_VERSION (2, 11, 7)
1523                 g_object_set (view, "has-tooltip", TRUE, NULL);
1524 #else
1525                 char *msg = tip_from_link (view, link);
1526
1527                 if (msg && g_utf8_validate (msg, -1, NULL)) {
1528                         EvTooltip *tooltip = EV_TOOLTIP (view->link_tooltip);
1529
1530                         ev_tooltip_set_position (tooltip, x, y);
1531                         ev_tooltip_set_text (tooltip, msg);
1532                         ev_tooltip_activate (tooltip);
1533                 }
1534                 g_free (msg);
1535 #endif
1536                 ev_view_set_cursor (view, EV_VIEW_CURSOR_LINK);
1537         } else if ((field = ev_view_get_form_field_at_location (view, x, y))) {
1538                 if (field->is_read_only) {
1539                         if (view->cursor == EV_VIEW_CURSOR_LINK ||
1540                             view->cursor == EV_VIEW_CURSOR_IBEAM)
1541                                 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
1542                 } else if (EV_IS_FORM_FIELD_TEXT (field)) {
1543                         ev_view_set_cursor (view, EV_VIEW_CURSOR_IBEAM);
1544                 } else {
1545                         ev_view_set_cursor (view, EV_VIEW_CURSOR_LINK);
1546                 }
1547         } else if (location_in_text (view, x + view->scroll_x, y + view->scroll_y)) {
1548                 ev_view_set_cursor (view, EV_VIEW_CURSOR_IBEAM);
1549         } else {
1550                 if (view->cursor == EV_VIEW_CURSOR_LINK ||
1551                     view->cursor == EV_VIEW_CURSOR_IBEAM)
1552                         ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
1553         }
1554 }
1555
1556 /*** Images ***/
1557 static EvImage *
1558 ev_view_get_image_at_location (EvView  *view,
1559                                gdouble  x,
1560                                gdouble  y)
1561 {
1562         gint page = -1;
1563         gint x_offset = 0, y_offset = 0;
1564         gint x_new = 0, y_new = 0;
1565         GList *image_mapping;
1566
1567         if (!EV_IS_DOCUMENT_IMAGES (view->document))
1568                 return NULL;
1569
1570         x += view->scroll_x;
1571         y += view->scroll_y;
1572
1573         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1574
1575         if (page == -1)
1576                 return NULL;
1577
1578         if (get_doc_point_from_offset (view, page, x_offset,
1579                                        y_offset, &x_new, &y_new) == FALSE)
1580                 return NULL;
1581
1582         image_mapping = ev_pixbuf_cache_get_image_mapping (view->pixbuf_cache, page);
1583
1584         if (image_mapping)
1585                 return ev_image_mapping_find (image_mapping, x_new, y_new);
1586         else
1587                 return NULL;
1588 }
1589
1590 /*** Forms ***/
1591 static EvFormField *
1592 ev_view_get_form_field_at_location (EvView  *view,
1593                                     gdouble  x,
1594                                     gdouble  y)
1595 {
1596         gint page = -1;
1597         gint x_offset = 0, y_offset = 0;
1598         gint x_new = 0, y_new = 0;
1599         GList *forms_mapping;
1600
1601         if (!EV_IS_DOCUMENT_FORMS (view->document))
1602                 return NULL;
1603
1604         x += view->scroll_x;
1605         y += view->scroll_y;
1606
1607         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1608
1609         if (page == -1)
1610                 return NULL;
1611
1612         if (get_doc_point_from_offset (view, page, x_offset,
1613                                        y_offset, &x_new, &y_new) == FALSE)
1614                 return NULL;
1615
1616         forms_mapping = ev_pixbuf_cache_get_form_field_mapping (view->pixbuf_cache, page);
1617
1618         if (forms_mapping)
1619                 return ev_form_field_mapping_find (forms_mapping, x_new, y_new);
1620         else
1621                 return NULL;
1622 }
1623
1624 static GdkRegion *
1625 ev_view_form_field_get_region (EvView      *view,
1626                                EvFormField *field)
1627 {
1628         EvRectangle  field_area;
1629         GdkRectangle view_area;
1630         GList       *forms_mapping;
1631
1632         forms_mapping = ev_pixbuf_cache_get_form_field_mapping (view->pixbuf_cache,
1633                                                                 field->page);
1634         ev_form_field_mapping_get_area (forms_mapping, field, &field_area);
1635         doc_rect_to_view_rect (view, field->page, &field_area, &view_area);
1636         view_area.x -= view->scroll_x;
1637         view_area.y -= view->scroll_y;
1638
1639         return gdk_region_rectangle (&view_area);
1640 }
1641
1642 static gboolean
1643 ev_view_forms_remove_widgets (EvView *view)
1644 {
1645         ev_view_remove_all (view);
1646
1647         return FALSE;
1648 }
1649
1650 static void
1651 ev_view_form_field_destroy (GtkWidget *widget,
1652                             EvView    *view)
1653 {
1654         g_idle_add ((GSourceFunc)ev_view_forms_remove_widgets, view);
1655 }
1656
1657 static GtkWidget *
1658 ev_view_form_field_button_create_widget (EvView      *view,
1659                                          EvFormField *field)
1660 {
1661         EvFormFieldButton *field_button = EV_FORM_FIELD_BUTTON (field);
1662         GdkRegion         *field_region = NULL;
1663
1664         switch (field_button->type) {
1665                 case EV_FORM_FIELD_BUTTON_PUSH:
1666                         return NULL;
1667                 case EV_FORM_FIELD_BUTTON_CHECK:
1668                 case EV_FORM_FIELD_BUTTON_RADIO: {
1669                         gboolean  state;
1670                         GList    *forms_mapping, *l;
1671
1672                         state = ev_document_forms_form_field_button_get_state (EV_DOCUMENT_FORMS (view->document),
1673                                                                                field);
1674
1675                         /* FIXME: it actually depends on NoToggleToOff flags */
1676                         if (field_button->type == EV_FORM_FIELD_BUTTON_RADIO &&
1677                             state && field_button->state)
1678                                 return NULL;
1679
1680                         field_region = ev_view_form_field_get_region (view, field);
1681
1682                         /* For radio buttons and checkbox buttons that are in a set
1683                          * we need to update also the region for the current selected item
1684                          */
1685                         forms_mapping = ev_pixbuf_cache_get_form_field_mapping (view->pixbuf_cache,
1686                                                                                 field->page);
1687                         for (l = forms_mapping; l; l = g_list_next (l)) {
1688                                 EvFormField *button = ((EvFormFieldMapping *)(l->data))->field;
1689                                 GdkRegion   *button_region;
1690
1691                                 if (button->id == field->id)
1692                                         continue;
1693
1694                                 /* FIXME: only buttons in the same group should be updated */
1695                                 if (!EV_IS_FORM_FIELD_BUTTON (button) ||
1696                                     EV_FORM_FIELD_BUTTON (button)->type != field_button->type ||
1697                                     EV_FORM_FIELD_BUTTON (button)->state != TRUE)
1698                                         continue;
1699
1700                                 button_region = ev_view_form_field_get_region (view, button);
1701                                 gdk_region_union (field_region, button_region);
1702                                 gdk_region_destroy (button_region);
1703                         }
1704
1705                         ev_document_forms_form_field_button_set_state (EV_DOCUMENT_FORMS (view->document),
1706                                                                        field, !state);
1707                         field_button->state = !state;
1708                 }
1709                         break;
1710         }
1711
1712         ev_pixbuf_cache_reload_page (view->pixbuf_cache,
1713                                      field_region,
1714                                      field->page,
1715                                      view->rotation,
1716                                      view->scale);
1717         gdk_region_destroy (field_region);
1718
1719         return NULL;
1720 }
1721
1722 static void
1723 ev_view_form_field_text_save (EvView    *view,
1724                               GtkWidget *widget)
1725 {
1726         EvFormField *field;
1727
1728         if (!view->document)
1729                 return;
1730
1731         field = g_object_get_data (G_OBJECT (widget), "form-field");
1732
1733         if (field->changed) {
1734                 EvFormFieldText *field_text = EV_FORM_FIELD_TEXT (field);
1735                 GdkRegion       *field_region;
1736
1737                 field_region = ev_view_form_field_get_region (view, field);
1738
1739                 ev_document_forms_form_field_text_set_text (EV_DOCUMENT_FORMS (view->document),
1740                                                             field, field_text->text);
1741                 field->changed = FALSE;
1742                 ev_pixbuf_cache_reload_page (view->pixbuf_cache,
1743                                              field_region,
1744                                              field->page,
1745                                              view->rotation,
1746                                              view->scale);
1747                 gdk_region_destroy (field_region);
1748         }
1749 }
1750
1751 static void
1752 ev_view_form_field_text_changed (GtkWidget   *widget,
1753                                  EvFormField *field)
1754 {
1755         EvFormFieldText *field_text = EV_FORM_FIELD_TEXT (field);
1756         gchar           *text = NULL;
1757
1758         if (GTK_IS_ENTRY (widget)) {
1759                 text = g_strdup (gtk_entry_get_text (GTK_ENTRY (widget)));
1760         } else if (GTK_IS_TEXT_BUFFER (widget)) {
1761                 GtkTextIter start, end;
1762
1763                 gtk_text_buffer_get_bounds (GTK_TEXT_BUFFER (widget), &start, &end);
1764                 text = gtk_text_buffer_get_text (GTK_TEXT_BUFFER (widget),
1765                                                  &start, &end, FALSE);
1766         }
1767
1768         if (!field_text->text ||
1769             (field_text->text && g_ascii_strcasecmp (field_text->text, text) != 0)) {
1770                 g_free (field_text->text);
1771                 field_text->text = text;
1772                 field->changed = TRUE;
1773         }
1774 }
1775
1776 static GtkWidget *
1777 ev_view_form_field_text_create_widget (EvView      *view,
1778                                        EvFormField *field)
1779 {
1780         EvFormFieldText *field_text = EV_FORM_FIELD_TEXT (field);
1781         GtkWidget       *text = NULL;
1782         gchar           *txt;
1783
1784         txt = ev_document_forms_form_field_text_get_text (EV_DOCUMENT_FORMS (view->document),
1785                                                           field);
1786
1787         switch (field_text->type) {
1788                 case EV_FORM_FIELD_TEXT_FILE_SELECT:
1789                         /* TODO */
1790                 case EV_FORM_FIELD_TEXT_NORMAL:
1791                         text = gtk_entry_new ();
1792                         gtk_entry_set_has_frame (GTK_ENTRY (text), FALSE);
1793                         gtk_entry_set_max_length (GTK_ENTRY (text), field_text->max_len);
1794                         gtk_entry_set_visibility (GTK_ENTRY (text), !field_text->is_password);
1795
1796                         if (txt) {
1797                                 gtk_entry_set_text (GTK_ENTRY (text), txt);
1798                                 g_free (txt);
1799                         }
1800
1801                         g_signal_connect (G_OBJECT (text), "changed",
1802                                           G_CALLBACK (ev_view_form_field_text_changed),
1803                                           field);
1804                         g_signal_connect_after (G_OBJECT (text), "activate",
1805                                                 G_CALLBACK (ev_view_form_field_destroy),
1806                                                 view);
1807                         break;
1808                 case EV_FORM_FIELD_TEXT_MULTILINE: {
1809                         GtkTextBuffer *buffer;
1810
1811                         text = gtk_text_view_new ();
1812                         buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (text));
1813
1814                         if (txt) {
1815                                 gtk_text_buffer_set_text (buffer, txt, -1);
1816                                 g_free (txt);
1817                         }
1818
1819                         g_signal_connect (G_OBJECT (buffer), "changed",
1820                                           G_CALLBACK (ev_view_form_field_text_changed),
1821                                           field);
1822                 }
1823                         break;
1824         }
1825
1826         g_object_weak_ref (G_OBJECT (text),
1827                            (GWeakNotify)ev_view_form_field_text_save,
1828                            view);
1829
1830         return text;
1831 }
1832
1833 static void
1834 ev_view_form_field_choice_save (EvView    *view,
1835                                 GtkWidget *widget)
1836 {
1837         EvFormField *field;
1838
1839         if (!view->document)
1840                 return;
1841
1842         field = g_object_get_data (G_OBJECT (widget), "form-field");
1843
1844         if (field->changed) {
1845                 GList             *l;
1846                 EvFormFieldChoice *field_choice = EV_FORM_FIELD_CHOICE (field);
1847                 GdkRegion         *field_region;
1848
1849                 field_region = ev_view_form_field_get_region (view, field);
1850
1851                 if (field_choice->is_editable) {
1852                         ev_document_forms_form_field_choice_set_text (EV_DOCUMENT_FORMS (view->document),
1853                                                                       field, field_choice->text);
1854                 } else {
1855                         ev_document_forms_form_field_choice_unselect_all (EV_DOCUMENT_FORMS (view->document), field);
1856                         for (l = field_choice->selected_items; l; l = g_list_next (l)) {
1857                                 ev_document_forms_form_field_choice_select_item (EV_DOCUMENT_FORMS (view->document),
1858                                                                                  field,
1859                                                                                  GPOINTER_TO_INT (l->data));
1860                         }
1861                 }
1862                 field->changed = FALSE;
1863                 ev_pixbuf_cache_reload_page (view->pixbuf_cache,
1864                                              field_region,
1865                                              field->page,
1866                                              view->rotation,
1867                                              view->scale);
1868                 gdk_region_destroy (field_region);
1869         }
1870 }
1871
1872 static void
1873 ev_view_form_field_choice_changed (GtkWidget   *widget,
1874                                    EvFormField *field)
1875 {
1876         EvFormFieldChoice *field_choice = EV_FORM_FIELD_CHOICE (field);
1877
1878         if (GTK_IS_COMBO_BOX (widget)) {
1879                 gint item;
1880
1881                 item = gtk_combo_box_get_active (GTK_COMBO_BOX (widget));
1882                 if (GPOINTER_TO_INT (field_choice->selected_items->data) != item) {
1883                         g_list_free (field_choice->selected_items);
1884                         field_choice->selected_items = NULL;
1885                         field_choice->selected_items = g_list_prepend (field_choice->selected_items,
1886                                                                        GINT_TO_POINTER (item));
1887                         field->changed = TRUE;
1888                 }
1889
1890                 if (GTK_IS_COMBO_BOX_ENTRY (widget)) {
1891                         gchar *text;
1892
1893                         text = gtk_combo_box_get_active_text (GTK_COMBO_BOX (widget));
1894                         if (!field_choice->text ||
1895                             (field_choice->text && g_ascii_strcasecmp (field_choice->text, text) != 0)) {
1896                                 g_free (field_choice->text);
1897                                 field_choice->text = text;
1898                                 field->changed = TRUE;
1899                         }
1900                 }
1901         } else if (GTK_IS_TREE_SELECTION (widget)) {
1902                 GtkTreeSelection *selection = GTK_TREE_SELECTION (widget);
1903                 GtkTreeModel     *model;
1904                 GList            *items, *l;
1905
1906                 items = gtk_tree_selection_get_selected_rows (selection, &model);
1907                 g_list_free (field_choice->selected_items);
1908                 field_choice->selected_items = NULL;
1909
1910                 for (l = items; l && l->data; l = g_list_next (l)) {
1911                         GtkTreeIter  iter;
1912                         GtkTreePath *path = (GtkTreePath *)l->data;
1913                         gint         item;
1914
1915                         gtk_tree_model_get_iter (model, &iter, path);
1916                         gtk_tree_model_get (model, &iter, 1, &item, -1);
1917
1918                         field_choice->selected_items = g_list_prepend (field_choice->selected_items,
1919                                                                        GINT_TO_POINTER (item));
1920
1921                         gtk_tree_path_free (path);
1922                 }
1923
1924                 g_list_free (items);
1925
1926                 field->changed = TRUE;
1927         }
1928 }
1929
1930 static GtkWidget *
1931 ev_view_form_field_choice_create_widget (EvView      *view,
1932                                          EvFormField *field)
1933 {
1934         EvFormFieldChoice *field_choice = EV_FORM_FIELD_CHOICE (field);
1935         GtkWidget         *choice;
1936         GtkTreeModel      *model;
1937         gint               n_items, i;
1938         gint               selected_item = 0;
1939
1940         n_items = ev_document_forms_form_field_choice_get_n_items (EV_DOCUMENT_FORMS (view->document),
1941                                                                    field);
1942         model = GTK_TREE_MODEL (gtk_list_store_new (2, G_TYPE_STRING, G_TYPE_INT));
1943         for (i = 0; i < n_items; i++) {
1944                 GtkTreeIter iter;
1945                 gchar      *item;
1946
1947                 item = ev_document_forms_form_field_choice_get_item (EV_DOCUMENT_FORMS (view->document),
1948                                                                      field, i);
1949                 if (ev_document_forms_form_field_choice_is_item_selected (
1950                             EV_DOCUMENT_FORMS (view->document), field, i)) {
1951                         selected_item = i;
1952                         /* FIXME: we need a get_selected_items function in poppler */
1953                         field_choice->selected_items = g_list_prepend (field_choice->selected_items,
1954                                                                        GINT_TO_POINTER (i));
1955                 }
1956
1957                 if (item) {
1958                         gtk_list_store_append (GTK_LIST_STORE (model), &iter);
1959                         gtk_list_store_set (GTK_LIST_STORE (model), &iter,
1960                                             0, item,
1961                                             1, i,
1962                                             -1);
1963                         g_free (item);
1964                 }
1965         }
1966
1967         if (field_choice->type == EV_FORM_FIELD_CHOICE_LIST) {
1968                 GtkCellRenderer  *renderer;
1969                 GtkWidget        *tree_view;
1970                 GtkTreeSelection *selection;
1971
1972                 tree_view = gtk_tree_view_new_with_model (model);
1973                 gtk_tree_view_set_headers_visible (GTK_TREE_VIEW (tree_view), FALSE);
1974
1975                 selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (tree_view));
1976                 if (field_choice->multi_select) {
1977                         gtk_tree_selection_set_mode (selection, GTK_SELECTION_MULTIPLE);
1978                 }
1979
1980                 /* TODO: set selected items */
1981
1982                 renderer = gtk_cell_renderer_text_new ();
1983                 gtk_tree_view_insert_column_with_attributes (GTK_TREE_VIEW (tree_view),
1984                                                              0,
1985                                                              "choix", renderer,
1986                                                              "text", 0,
1987                                                              NULL);
1988
1989                 choice = gtk_scrolled_window_new (NULL, NULL);
1990                 gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (choice),
1991                                                 GTK_POLICY_AUTOMATIC,
1992                                                 GTK_POLICY_AUTOMATIC);
1993                 gtk_container_add (GTK_CONTAINER (choice), tree_view);
1994                 gtk_widget_show (tree_view);
1995
1996                 g_signal_connect (G_OBJECT (selection), "changed",
1997                                   G_CALLBACK (ev_view_form_field_choice_changed),
1998                                   field);
1999                 g_signal_connect_after (G_OBJECT (selection), "changed",
2000                                         G_CALLBACK (ev_view_form_field_destroy),
2001                                         view);
2002         } else if (field_choice->is_editable) { /* ComboBoxEntry */
2003                 gchar *text;
2004
2005                 choice = gtk_combo_box_entry_new_with_model (model, 0);
2006                 text = ev_document_forms_form_field_choice_get_text (EV_DOCUMENT_FORMS (view->document), field);
2007                 if (text) {
2008                         gtk_entry_set_text (GTK_ENTRY (gtk_bin_get_child (GTK_BIN (choice))), text);
2009                         g_free (text);
2010                 }
2011
2012                 g_signal_connect (G_OBJECT (choice), "changed",
2013                                   G_CALLBACK (ev_view_form_field_choice_changed),
2014                                   field);
2015                 g_signal_connect_after (G_OBJECT (GTK_BIN (choice)->child), "activate",
2016                                         G_CALLBACK (ev_view_form_field_destroy),
2017                                         view);
2018         } else { /* ComboBoxText */
2019                 GtkCellRenderer *renderer;
2020
2021                 choice = gtk_combo_box_new_with_model (model);
2022                 renderer = gtk_cell_renderer_text_new ();
2023                 gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (choice),
2024                                             renderer, TRUE);
2025                 gtk_cell_layout_set_attributes (GTK_CELL_LAYOUT (choice),
2026                                                 renderer,
2027                                                 "text", 0,
2028                                                 NULL);
2029                 gtk_combo_box_set_active (GTK_COMBO_BOX (choice), selected_item);
2030                 gtk_combo_box_popup (GTK_COMBO_BOX (choice));
2031
2032                 g_signal_connect (G_OBJECT (choice), "changed",
2033                                   G_CALLBACK (ev_view_form_field_choice_changed),
2034                                   field);
2035                 g_signal_connect_after (G_OBJECT (choice), "changed",
2036                                         G_CALLBACK (ev_view_form_field_destroy),
2037                                         view);
2038         }
2039
2040         g_object_unref (model);
2041
2042         g_object_weak_ref (G_OBJECT (choice),
2043                            (GWeakNotify)ev_view_form_field_choice_save,
2044                            view);
2045
2046         return choice;
2047 }
2048
2049 static void
2050 ev_view_handle_form_field (EvView      *view,
2051                            EvFormField *field,
2052                            gdouble      x,
2053                            gdouble      y)
2054 {
2055         GtkWidget   *field_widget = NULL;
2056         GList       *form_field_mapping;
2057         EvRectangle  field_area;
2058         GdkRectangle view_area;
2059
2060         if (field->is_read_only)
2061                 return;
2062
2063         if (EV_IS_FORM_FIELD_BUTTON (field)) {
2064                 field_widget = ev_view_form_field_button_create_widget (view, field);
2065         } else if (EV_IS_FORM_FIELD_TEXT (field)) {
2066                 field_widget = ev_view_form_field_text_create_widget (view, field);
2067         } else if (EV_IS_FORM_FIELD_CHOICE (field)) {
2068                 field_widget = ev_view_form_field_choice_create_widget (view, field);
2069         } else if (EV_IS_FORM_FIELD_SIGNATURE (field)) {
2070                 /* TODO */
2071         }
2072
2073         /* Form field doesn't require a widget */
2074         if (!field_widget)
2075                 return;
2076
2077         g_object_set_data_full (G_OBJECT (field_widget), "form-field",
2078                                 g_object_ref (field),
2079                                 (GDestroyNotify)g_object_unref);
2080
2081         form_field_mapping = ev_pixbuf_cache_get_form_field_mapping (view->pixbuf_cache, field->page);
2082         ev_form_field_mapping_get_area (form_field_mapping, field, &field_area);
2083
2084         doc_rect_to_view_rect (view, field->page, &field_area, &view_area);
2085         view_area.x -= view->scroll_x;
2086         view_area.y -= view->scroll_y;
2087
2088         gtk_layout_put (GTK_LAYOUT (view), field_widget, view_area.x, view_area.y);
2089         gtk_widget_show (field_widget);
2090         gtk_widget_grab_focus (field_widget);
2091 }
2092
2093 /*** GtkWidget implementation ***/
2094
2095 static void
2096 ev_view_size_request_continuous_dual_page (EvView         *view,
2097                                            GtkRequisition *requisition)
2098 {
2099         int max_width;
2100         gint n_pages;
2101         GtkBorder border;
2102
2103         ev_page_cache_get_max_width (view->page_cache, view->rotation,
2104                                      view->scale, &max_width);
2105         compute_border (view, max_width, max_width, &border);
2106
2107         n_pages = ev_page_cache_get_n_pages (view->page_cache) + 1;
2108
2109         requisition->width = (max_width + border.left + border.right) * 2 + (view->spacing * 3);
2110         get_page_y_offset (view, n_pages, view->scale, &requisition->height);
2111
2112         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
2113                 requisition->width = 1;
2114         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
2115                 requisition->width = 1;
2116                 /* FIXME: This could actually be set on one page docs or docs
2117                  * with a strange aspect ratio. */
2118                 /* requisition->height = 1;*/
2119         }
2120 }
2121
2122 static void
2123 ev_view_size_request_continuous (EvView         *view,
2124                                  GtkRequisition *requisition)
2125 {
2126         int max_width;
2127         int n_pages;
2128         GtkBorder border;
2129
2130
2131         ev_page_cache_get_max_width (view->page_cache, view->rotation,
2132                                      view->scale, &max_width);
2133         n_pages = ev_page_cache_get_n_pages (view->page_cache);
2134         compute_border (view, max_width, max_width, &border);
2135
2136         requisition->width = max_width + (view->spacing * 2) + border.left + border.right;
2137         get_page_y_offset (view, n_pages, view->scale, &requisition->height);
2138
2139         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
2140                 requisition->width = 1;
2141         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
2142                 requisition->width = 1;
2143                 /* FIXME: This could actually be set on one page docs or docs
2144                  * with a strange aspect ratio. */
2145                 /* requisition->height = 1;*/
2146         }
2147 }
2148
2149 static void
2150 ev_view_size_request_dual_page (EvView         *view,
2151                                 GtkRequisition *requisition)
2152 {
2153         GtkBorder border;
2154         gint width, height;
2155
2156         /* Find the largest of the two. */
2157         ev_page_cache_get_size (view->page_cache,
2158                                 view->current_page,
2159                                 view->rotation,
2160                                 view->scale,
2161                                 &width, &height);
2162         if (view->current_page + 1 < ev_page_cache_get_n_pages (view->page_cache)) {
2163                 gint width_2, height_2;
2164                 ev_page_cache_get_size (view->page_cache,
2165                                         view->current_page + 1,
2166                                         view->rotation,
2167                                         view->scale,
2168                                         &width_2, &height_2);
2169                 if (width_2 > width) {
2170                         width = width_2;
2171                         height = height_2;
2172                 }
2173         }
2174         compute_border (view, width, height, &border);
2175
2176         requisition->width = ((width + border.left + border.right) * 2) +
2177                 (view->spacing * 3);
2178         requisition->height = (height + border.top + border.bottom) +
2179                 (view->spacing * 2);
2180
2181         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
2182                 requisition->width = 1;
2183         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
2184                 requisition->width = 1;
2185                 requisition->height = 1;
2186         }
2187 }
2188
2189 static void
2190 ev_view_size_request_single_page (EvView         *view,
2191                                   GtkRequisition *requisition)
2192 {
2193         GtkBorder border;
2194         gint width, height;
2195
2196         ev_page_cache_get_size (view->page_cache,
2197                                 view->current_page,
2198                                 view->rotation,
2199                                 view->scale,
2200                                 &width, &height);
2201         compute_border (view, width, height, &border);
2202
2203         requisition->width = width + border.left + border.right + (2 * view->spacing);
2204         requisition->height = height + border.top + border.bottom + (2 * view->spacing);
2205
2206         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
2207                 requisition->width = 1;
2208                 requisition->height = height + border.top + border.bottom + (2 * view->spacing);
2209         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
2210                 requisition->width = 1;
2211                 requisition->height = 1;
2212         }
2213 }
2214
2215 static void
2216 ev_view_size_request (GtkWidget      *widget,
2217                       GtkRequisition *requisition)
2218 {
2219         EvView *view = EV_VIEW (widget);
2220
2221         if (view->document == NULL) {
2222                 requisition->width = 1;
2223                 requisition->height = 1;
2224                 return;
2225         }
2226
2227         if (view->presentation) {
2228                 requisition->width = 1;
2229                 requisition->height = 1;
2230                 return;
2231         }
2232
2233         if (view->continuous && view->dual_page)
2234                 ev_view_size_request_continuous_dual_page (view, requisition);
2235         else if (view->continuous)
2236                 ev_view_size_request_continuous (view, requisition);
2237         else if (view->dual_page)
2238                 ev_view_size_request_dual_page (view, requisition);
2239         else
2240                 ev_view_size_request_single_page (view, requisition);
2241 }
2242
2243 static void
2244 ev_view_size_allocate (GtkWidget      *widget,
2245                        GtkAllocation  *allocation)
2246 {
2247         EvView *view = EV_VIEW (widget);
2248         GList  *children, *l;
2249
2250         GTK_WIDGET_CLASS (ev_view_parent_class)->size_allocate (widget, allocation);
2251
2252         if (view->sizing_mode == EV_SIZING_FIT_WIDTH ||
2253             view->sizing_mode == EV_SIZING_BEST_FIT) {
2254
2255                 g_signal_emit (view, signals[SIGNAL_ZOOM_INVALID], 0);
2256
2257                 ev_view_size_request (widget, &widget->requisition);
2258         }
2259
2260         view_set_adjustment_values (view, GTK_ORIENTATION_HORIZONTAL);
2261         view_set_adjustment_values (view, GTK_ORIENTATION_VERTICAL);
2262
2263         if (view->document)
2264                 view_update_range_and_current_page (view);
2265
2266         view->pending_scroll = SCROLL_TO_KEEP_POSITION;
2267         view->pending_resize = FALSE;
2268
2269         children = gtk_container_get_children (GTK_CONTAINER (widget));
2270         for (l = children; l && l->data; l = g_list_next (l)) {
2271                 EvFormField   *field;
2272                 EvRectangle    field_area;
2273                 GdkRectangle   view_area;
2274                 GList         *form_field_mapping;
2275                 GtkAllocation  child_allocation;
2276                 GtkRequisition child_requisition;
2277                 GtkWidget     *child = (GtkWidget *)l->data;
2278
2279                 field = g_object_get_data (G_OBJECT (child), "form-field");
2280                 if (!field)
2281                         continue;
2282
2283                 form_field_mapping = ev_pixbuf_cache_get_form_field_mapping (view->pixbuf_cache,
2284                                                                              field->page);
2285                 ev_form_field_mapping_get_area (form_field_mapping, field, &field_area);
2286
2287                 doc_rect_to_view_rect (view, field->page, &field_area, &view_area);
2288                 view_area.x -= view->scroll_x;
2289                 view_area.y -= view->scroll_y;
2290
2291                 gtk_widget_size_request (child, &child_requisition);
2292                 if (child_requisition.width != view_area.width ||
2293                     child_requisition.height != view_area.height)
2294                         gtk_widget_set_size_request (child, view_area.width, view_area.height);
2295
2296                 gtk_container_child_get (GTK_CONTAINER (widget),
2297                                          child,
2298                                          "x", &child_allocation.x,
2299                                          "y", &child_allocation.y,
2300                                          NULL);
2301                 if (child_allocation.x != view_area.x ||
2302                     child_allocation.y != view_area.y) {
2303                         gtk_layout_move (GTK_LAYOUT (widget), child, view_area.x, view_area.y);
2304                 }
2305         }
2306         g_list_free (children);
2307 }
2308
2309 static void
2310 ev_view_realize (GtkWidget *widget)
2311 {
2312         EvView *view = EV_VIEW (widget);
2313
2314         if (GTK_WIDGET_CLASS (ev_view_parent_class)->realize)
2315                 (* GTK_WIDGET_CLASS (ev_view_parent_class)->realize) (widget);
2316
2317         gdk_window_set_events (view->layout.bin_window,
2318                                (gdk_window_get_events (view->layout.bin_window) |
2319                                 GDK_EXPOSURE_MASK |
2320                                 GDK_BUTTON_PRESS_MASK |
2321                                 GDK_BUTTON_RELEASE_MASK |
2322                                 GDK_SCROLL_MASK |
2323                                 GDK_KEY_PRESS_MASK |
2324                                 GDK_POINTER_MOTION_MASK |
2325                                 GDK_POINTER_MOTION_HINT_MASK |
2326                                 GDK_ENTER_NOTIFY_MASK |
2327                                 GDK_LEAVE_NOTIFY_MASK));
2328
2329         if (view->presentation)
2330                 gdk_window_set_background (view->layout.bin_window, &widget->style->black);
2331         else
2332                 gdk_window_set_background (view->layout.bin_window, &widget->style->mid [GTK_STATE_NORMAL]);
2333 }
2334
2335 static gboolean
2336 ev_view_scroll_event (GtkWidget *widget, GdkEventScroll *event)
2337 {
2338         EvView *view = EV_VIEW (widget);
2339         guint state;
2340
2341         state = event->state & gtk_accelerator_get_default_mod_mask ();
2342
2343         if (state == GDK_CONTROL_MASK && view->presentation == FALSE) {
2344                 ev_view_set_sizing_mode (view, EV_SIZING_FREE);
2345
2346                 if (event->direction == GDK_SCROLL_UP ||
2347                     event->direction == GDK_SCROLL_LEFT) {
2348                         if (ev_view_can_zoom_in (view)) {
2349                                 ev_view_zoom_in (view);
2350                         }
2351                 } else {
2352                         if (ev_view_can_zoom_out (view)) {
2353                                 ev_view_zoom_out (view);
2354                         }
2355                 }
2356
2357                 return TRUE;
2358         }
2359
2360         view->jump_to_find_result = FALSE;
2361         /* Shift+Wheel scrolls the in the perpendicular direction */
2362         if (state & GDK_SHIFT_MASK) {
2363                 if (event->direction == GDK_SCROLL_UP)
2364                         event->direction = GDK_SCROLL_LEFT;
2365                 if (event->direction == GDK_SCROLL_LEFT)
2366                         event->direction = GDK_SCROLL_UP;
2367                 if (event->direction == GDK_SCROLL_DOWN)
2368                         event->direction = GDK_SCROLL_RIGHT;
2369                 if (event->direction == GDK_SCROLL_RIGHT)
2370                         event->direction = GDK_SCROLL_DOWN;
2371
2372                 event->state &= ~GDK_SHIFT_MASK;
2373                 state &= ~GDK_SHIFT_MASK;
2374         }
2375
2376         if (state == 0 && view->presentation) {
2377                 switch (event->direction) {
2378                         case GDK_SCROLL_DOWN:
2379                         case GDK_SCROLL_RIGHT:
2380                                 ev_view_next_page (view);
2381                                 break;
2382                         case GDK_SCROLL_UP:
2383                         case GDK_SCROLL_LEFT:
2384                                 ev_view_previous_page (view);
2385                                 break;
2386                 }
2387
2388                 return TRUE;
2389         }
2390
2391         return FALSE;
2392 }
2393
2394 static EvViewSelection *
2395 find_selection_for_page (EvView *view,
2396                          gint    page)
2397 {
2398         GList *list;
2399
2400         for (list = view->selection_info.selections; list != NULL; list = list->next) {
2401                 EvViewSelection *selection;
2402
2403                 selection = (EvViewSelection *) list->data;
2404
2405                 if (selection->page == page)
2406                         return selection;
2407         }
2408
2409         return NULL;
2410 }
2411
2412 static void
2413 draw_end_presentation_page (EvView       *view,
2414                             GdkRectangle *page_area)
2415 {
2416         PangoLayout *layout;
2417         PangoFontDescription *font_desc;
2418         gchar *markup;
2419         const gchar *text = _("End of presentation. Press Escape to exit.");
2420
2421         if (view->presentation_state != EV_PRESENTATION_END)
2422                 return;
2423
2424         layout = gtk_widget_create_pango_layout (GTK_WIDGET (view), NULL);
2425         markup = g_strdup_printf ("<span foreground=\"white\">%s</span>", text);
2426         pango_layout_set_markup (layout, markup, -1);
2427         g_free (markup);
2428
2429         font_desc = pango_font_description_new ();
2430         pango_font_description_set_size (font_desc, 16 * PANGO_SCALE);
2431         pango_layout_set_font_description (layout, font_desc);
2432
2433         gtk_paint_layout (GTK_WIDGET (view)->style,
2434                           view->layout.bin_window,
2435                           GTK_WIDGET_STATE (view),
2436                           FALSE,
2437                           page_area,
2438                           GTK_WIDGET (view),
2439                           NULL,
2440                           page_area->x + 15,
2441                           page_area->y + 15,
2442                           layout);
2443
2444         pango_font_description_free (font_desc);
2445         g_object_unref (layout);
2446 }
2447
2448 static gboolean
2449 ev_view_expose_event (GtkWidget      *widget,
2450                       GdkEventExpose *event)
2451 {
2452         EvView  *view = EV_VIEW (widget);
2453         cairo_t *cr;
2454         gint     i;
2455
2456         if (view->presentation) {
2457                 switch (view->presentation_state) {
2458                         case EV_PRESENTATION_END: {
2459                                 GdkRectangle area = {0};
2460
2461                                 area.width = widget->allocation.width;
2462                                 area.height = widget->allocation.height;
2463
2464                                 draw_end_presentation_page (view, &area);
2465                         }
2466                                 return FALSE;
2467                         case EV_PRESENTATION_BLACK:
2468                         case EV_PRESENTATION_WHITE:
2469                                 return FALSE;
2470                         case EV_PRESENTATION_NORMAL:
2471                         default:
2472                                 break;
2473                 }
2474         } else if (view->loading) {
2475                 GdkRectangle area = {0};
2476
2477                 area.width = widget->allocation.width;
2478                 area.height = widget->allocation.height;
2479
2480                 draw_loading_text (view,
2481                                    &area,
2482                                    &(event->area));
2483         }
2484
2485         if (view->document == NULL)
2486                 return FALSE;
2487
2488         cr = gdk_cairo_create (view->layout.bin_window);
2489
2490         for (i = view->start_page; i <= view->end_page; i++) {
2491                 GdkRectangle page_area;
2492                 GtkBorder border;
2493                 gboolean page_ready = TRUE;
2494
2495                 if (!get_page_extents (view, i, &page_area, &border))
2496                         continue;
2497
2498                 page_area.x -= view->scroll_x;
2499                 page_area.y -= view->scroll_y;
2500
2501                 draw_one_page (view, i, cr, &page_area, &border, &(event->area), &page_ready);
2502
2503                 if (page_ready && EV_IS_DOCUMENT_FIND (view->document) && view->highlight_find_results)
2504                         highlight_find_results (view, i);
2505         }
2506
2507         cairo_destroy (cr);
2508
2509         if (GTK_WIDGET_CLASS (ev_view_parent_class)->expose_event)
2510                 (* GTK_WIDGET_CLASS (ev_view_parent_class)->expose_event) (widget, event);
2511
2512         return FALSE;
2513 }
2514
2515 static gboolean
2516 ev_view_do_popup_menu (EvView *view,
2517                        gdouble x,
2518                        gdouble y)
2519 {
2520         EvLink  *link;
2521         EvImage *image;
2522
2523         image = ev_view_get_image_at_location (view, x, y);
2524         if (image) {
2525                 g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, image);
2526                 return TRUE;
2527         }
2528
2529         link = ev_view_get_link_at_location (view, x, y);
2530         if (link) {
2531                 g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, link);
2532                 return TRUE;
2533         }
2534
2535         g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, NULL);
2536
2537         return TRUE;
2538 }
2539
2540 static gboolean
2541 ev_view_popup_menu (GtkWidget *widget)
2542 {
2543         gint x, y;
2544
2545         gtk_widget_get_pointer (widget, &x, &y);
2546         return ev_view_do_popup_menu (EV_VIEW (widget), x, y);
2547 }
2548
2549 #if GTK_CHECK_VERSION (2, 11, 7)
2550 static void
2551 get_link_area (EvView       *view,
2552                gint          x,
2553                gint          y,
2554                EvLink       *link,
2555                GdkRectangle *area)
2556 {
2557         EvRectangle  ev_rect;
2558         GList       *link_mapping;
2559         gint         page;
2560         gint         x_offset = 0, y_offset = 0;
2561
2562         x += view->scroll_x;
2563         y += view->scroll_y;
2564
2565         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
2566
2567         link_mapping = ev_pixbuf_cache_get_link_mapping (view->pixbuf_cache, page);
2568         ev_link_mapping_get_area (link_mapping, link, &ev_rect);
2569
2570         doc_rect_to_view_rect (view, page, &ev_rect, area);
2571         area->y -= view->scroll_y ;
2572 }
2573
2574 static gboolean
2575 ev_view_query_tooltip (GtkWidget         *widget,
2576                        gint               x,
2577                        gint               y,
2578                        gboolean           keyboard_tip,
2579                        GtkTooltip        *tooltip)
2580 {
2581         EvView *view = EV_VIEW (widget);
2582         EvLink *link;
2583         gchar  *text;
2584
2585         link = ev_view_get_link_at_location (view, x, y);
2586         if (!link)
2587                 return FALSE;
2588
2589         text = tip_from_link (view, link);
2590         if (text && g_utf8_validate (text, -1, NULL)) {
2591                 GdkRectangle link_area;
2592
2593                 get_link_area (view, x, y, link, &link_area);
2594                 gtk_tooltip_set_text (tooltip, text);
2595                 gtk_tooltip_set_tip_area (tooltip, &link_area);
2596         }
2597         g_free (text);
2598
2599         return TRUE;
2600 }
2601 #endif /* GTK_CHECK_VERSION (2, 11, 7) */
2602
2603 static void
2604 start_selection_for_event (EvView         *view,
2605                            GdkEventButton *event)
2606 {
2607         EvSelectionStyle style;
2608
2609         clear_selection (view);
2610
2611         view->selection_info.start.x = event->x + view->scroll_x;
2612         view->selection_info.start.y = event->y + view->scroll_y;
2613
2614         switch (event->type) {
2615                 case GDK_2BUTTON_PRESS:
2616                         style = EV_SELECTION_STYLE_WORD;
2617                         break;
2618                 case GDK_3BUTTON_PRESS:
2619                         style = EV_SELECTION_STYLE_LINE;
2620                         break;
2621                 default:
2622                         style = EV_SELECTION_STYLE_GLYPH;
2623                         break;
2624         }
2625
2626         view->selection_info.style = style;
2627 }
2628
2629 static gboolean
2630 ev_view_button_press_event (GtkWidget      *widget,
2631                             GdkEventButton *event)
2632 {
2633         EvView *view = EV_VIEW (widget);
2634
2635         if (!view->document)
2636                 return FALSE;
2637
2638         if (!GTK_WIDGET_HAS_FOCUS (widget)) {
2639                 gtk_widget_grab_focus (widget);
2640         }
2641
2642         view->pressed_button = event->button;
2643         view->selection_info.in_drag = FALSE;
2644
2645         switch (event->button) {
2646                 case 1: {
2647                         EvImage *image;
2648                         EvFormField *field;
2649
2650                         if (EV_IS_SELECTION (view->document) && view->selection_info.selections) {
2651                                 if (event->type == GDK_3BUTTON_PRESS) {
2652                                         start_selection_for_event (view, event);
2653                                 } else if (location_in_selected_text (view,
2654                                                                event->x + view->scroll_x,
2655                                                                event->y + view->scroll_y)) {
2656                                         view->selection_info.in_drag = TRUE;
2657                                 } else {
2658                                         start_selection_for_event (view, event);
2659                                 }
2660
2661                                 gtk_widget_queue_draw (widget);
2662                         } else if ((field = ev_view_get_form_field_at_location (view, event->x, event->y))) {
2663                                 ev_view_remove_all (view);
2664                                 ev_view_handle_form_field (view, field, event->x, event->y);
2665                         } else if (!location_in_text (view, event->x + view->scroll_x, event->y + view->scroll_y) &&
2666                                    (image = ev_view_get_image_at_location (view, event->x, event->y))) {
2667                                 if (view->image_dnd_info.image)
2668                                         g_object_unref (view->image_dnd_info.image);
2669                                 view->image_dnd_info.image = g_object_ref (image);
2670                                 view->image_dnd_info.in_drag = TRUE;
2671
2672                                 view->image_dnd_info.start.x = event->x + view->scroll_x;
2673                                 view->image_dnd_info.start.y = event->y + view->scroll_y;
2674                         } else {
2675                                 ev_view_remove_all (view);
2676
2677                                 if (EV_IS_SELECTION (view->document))
2678                                         start_selection_for_event (view, event);
2679                         }
2680                 }
2681                         return TRUE;
2682                 case 2:
2683                         /* use root coordinates as reference point because
2684                          * scrolling changes window relative coordinates */
2685                         view->drag_info.start.x = event->x_root;
2686                         view->drag_info.start.y = event->y_root;
2687                         view->drag_info.hadj = gtk_adjustment_get_value (view->hadjustment);
2688                         view->drag_info.vadj = gtk_adjustment_get_value (view->vadjustment);
2689
2690                         ev_view_set_cursor (view, EV_VIEW_CURSOR_DRAG);
2691
2692                         return TRUE;
2693                 case 3:
2694                         return ev_view_do_popup_menu (view, event->x, event->y);
2695         }
2696
2697         return FALSE;
2698 }
2699
2700 static void
2701 ev_view_remove_all (EvView *view)
2702 {
2703         GList *children, *child;
2704
2705         children = gtk_container_get_children (GTK_CONTAINER (view));
2706         for (child = children; child && child->data; child = g_list_next (child)) {
2707                 gtk_container_remove (GTK_CONTAINER (view),
2708                                       GTK_WIDGET (child->data));
2709         }
2710         g_list_free (children);
2711 }
2712
2713 /*** Drag and Drop ***/
2714 static void
2715 ev_view_drag_data_get (GtkWidget        *widget,
2716                        GdkDragContext   *context,
2717                        GtkSelectionData *selection_data,
2718                        guint             info,
2719                        guint             time)
2720 {
2721         EvView *view = EV_VIEW (widget);
2722
2723         switch (info) {
2724                 case TARGET_DND_TEXT:
2725                         if (EV_IS_SELECTION (view->document) &&
2726                             view->selection_info.selections) {
2727                                 gchar *text;
2728
2729                                 text = get_selected_text (view);
2730                                 gtk_selection_data_set_text (selection_data,
2731                                                              text,
2732                                                              strlen (text));
2733                                 g_free (text);
2734                         }
2735                         break;
2736                 case TARGET_DND_IMAGE:
2737                         if (view->image_dnd_info.image) {
2738                                 GdkPixbuf *pixbuf;
2739
2740                                 pixbuf = ev_image_get_pixbuf (view->image_dnd_info.image);
2741                                 gtk_selection_data_set_pixbuf (selection_data, pixbuf);
2742                         }
2743                         break;
2744                 case TARGET_DND_URI:
2745                         if (view->image_dnd_info.image) {
2746                                 const gchar *tmp_uri;
2747                                 gchar      **uris;
2748
2749                                 tmp_uri = ev_image_save_tmp (view->image_dnd_info.image);
2750
2751                                 uris = g_new0 (gchar *, 2);
2752                                 uris[0] = (gchar *)tmp_uri;
2753
2754                                 gtk_selection_data_set_uris (selection_data, uris);
2755
2756                                 /* g_free instead of g_strfreev since tmp_uri is const */
2757                                 g_free (uris);
2758                         }
2759         }
2760 }
2761
2762 static gboolean
2763 ev_view_drag_motion (GtkWidget      *widget,
2764                      GdkDragContext *context,
2765                      gint            x,
2766                      gint            y,
2767                      guint           time)
2768 {
2769         if (gtk_drag_get_source_widget (context) == widget)
2770                 gdk_drag_status (context, 0, time);
2771         else
2772                 gdk_drag_status (context, context->suggested_action, time);
2773
2774         return TRUE;
2775 }
2776
2777 static void
2778 ev_view_drag_data_received (GtkWidget          *widget,
2779                             GdkDragContext     *context,
2780                             gint                x,
2781                             gint                y,
2782                             GtkSelectionData   *selection_data,
2783                             guint               info,
2784                             guint               time)
2785 {
2786         gchar  **uris;
2787         gint     i = 0;
2788         GSList  *uri_list = NULL;
2789
2790         uris = gtk_selection_data_get_uris (selection_data);
2791         if (!uris) {
2792                 gtk_drag_finish (context, FALSE, FALSE, time);
2793                 return;
2794         }
2795
2796         for (i = 0; uris[i]; i++) {
2797                 uri_list = g_slist_prepend (uri_list, (gpointer) uris[i]);
2798         }
2799
2800         ev_application_open_uri_list (EV_APP, uri_list,
2801                                       gtk_widget_get_screen (widget),
2802                                       0);
2803         gtk_drag_finish (context, TRUE, FALSE, time);
2804
2805         g_strfreev (uris);
2806         g_slist_free (uri_list);
2807 }
2808
2809
2810 static gboolean
2811 selection_update_idle_cb (EvView *view)
2812 {
2813         compute_selections (view,
2814                             view->selection_info.style,
2815                             &view->selection_info.start,
2816                             &view->motion);
2817         view->selection_update_id = 0;
2818         return FALSE;
2819 }
2820
2821 static gboolean
2822 selection_scroll_timeout_cb (EvView *view)
2823 {
2824         gint x, y, shift = 0;
2825         GtkWidget *widget = GTK_WIDGET (view);
2826
2827         gtk_widget_get_pointer (widget, &x, &y);
2828
2829         if (y > widget->allocation.height) {
2830                 shift = (y - widget->allocation.height) / 2;
2831         } else if (y < 0) {
2832                 shift = y / 2;
2833         }
2834
2835         if (shift)
2836                 gtk_adjustment_set_value (view->vadjustment,
2837                                           CLAMP (view->vadjustment->value + shift,
2838                                           view->vadjustment->lower,
2839                                           view->vadjustment->upper -
2840                                           view->vadjustment->page_size));
2841
2842         if (x > widget->allocation.width) {
2843                 shift = (x - widget->allocation.width) / 2;
2844         } else if (x < 0) {
2845                 shift = x / 2;
2846         }
2847
2848         if (shift)
2849                 gtk_adjustment_set_value (view->hadjustment,
2850                                           CLAMP (view->hadjustment->value + shift,
2851                                           view->hadjustment->lower,
2852                                           view->hadjustment->upper -
2853                                           view->hadjustment->page_size));
2854
2855         return TRUE;
2856 }
2857
2858 static gboolean
2859 ev_view_motion_notify_event (GtkWidget      *widget,
2860                              GdkEventMotion *event)
2861 {
2862         EvView *view = EV_VIEW (widget);
2863         gint x, y;
2864
2865         if (!view->document)
2866                 return FALSE;
2867
2868         if (event->is_hint || event->window != view->layout.bin_window) {
2869             gtk_widget_get_pointer (widget, &x, &y);
2870         } else {
2871             x = event->x;
2872             y = event->y;
2873         }
2874
2875         if (view->selection_info.in_drag) {
2876                 if (gtk_drag_check_threshold (widget,
2877                                               view->selection_info.start.x,
2878                                               view->selection_info.start.y,
2879                                               x, y)) {
2880                         GtkTargetList *target_list = gtk_target_list_new (NULL, 0);
2881
2882                         gtk_target_list_add_text_targets (target_list, TARGET_DND_TEXT);
2883
2884                         gtk_drag_begin (widget, target_list,
2885                                         GDK_ACTION_COPY,
2886                                         1, (GdkEvent *)event);
2887
2888                         view->selection_info.in_drag = FALSE;
2889
2890                         gtk_target_list_unref (target_list);
2891
2892                         return TRUE;
2893                 }
2894         } else if (view->image_dnd_info.in_drag) {
2895                 if (gtk_drag_check_threshold (widget,
2896                                               view->selection_info.start.x,
2897                                               view->selection_info.start.y,
2898                                               x, y)) {
2899                         GtkTargetList *target_list = gtk_target_list_new (NULL, 0);
2900
2901                         gtk_target_list_add_uri_targets (target_list, TARGET_DND_URI);
2902                         gtk_target_list_add_image_targets (target_list, TARGET_DND_IMAGE, TRUE);
2903
2904                         gtk_drag_begin (widget, target_list,
2905                                         GDK_ACTION_COPY,
2906                                         1, (GdkEvent *)event);
2907
2908                         view->image_dnd_info.in_drag = FALSE;
2909
2910                         gtk_target_list_unref (target_list);
2911
2912                         return TRUE;
2913                 }
2914         }
2915
2916         /* For the Evince 0.4.x release, we limit selection to un-rotated
2917          * documents only.
2918          */
2919         if (view->pressed_button == 1 && view->rotation == 0) {
2920
2921                 /* Schedule timeout to scroll during selection and additionally
2922                  * scroll once to allow arbitrary speed. */
2923                 if (!view->selection_scroll_id)
2924                     view->selection_scroll_id = g_timeout_add (SCROLL_TIME, (GSourceFunc)selection_scroll_timeout_cb, view);
2925                 else
2926                     selection_scroll_timeout_cb (view);
2927
2928                 view->selection_info.in_selection = TRUE;
2929                 view->motion.x = x + view->scroll_x;
2930                 view->motion.y = y + view->scroll_y;
2931
2932                 /* Queue an idle to handle the motion.  We do this because
2933                  * handling any selection events in the motion could be slower
2934                  * than new motion events reach us.  We always put it in the
2935                  * idle to make sure we catch up and don't visibly lag the
2936                  * mouse. */
2937                 if (!view->selection_update_id)
2938                         view->selection_update_id = g_idle_add ((GSourceFunc)selection_update_idle_cb, view);
2939
2940                 return TRUE;
2941         } else if (view->pressed_button == 2) {
2942                 if (!view->drag_info.in_drag) {
2943                         gboolean start;
2944
2945                         start = gtk_drag_check_threshold (widget,
2946                                                           view->drag_info.start.x,
2947                                                           view->drag_info.start.y,
2948                                                           event->x_root,
2949                                                           event->y_root);
2950                         view->drag_info.in_drag = start;
2951                 }
2952
2953                 if (view->drag_info.in_drag) {
2954                         int dx, dy;
2955                         gdouble dhadj_value, dvadj_value;
2956
2957                         dx = event->x_root - view->drag_info.start.x;
2958                         dy = event->y_root - view->drag_info.start.y;
2959
2960                         dhadj_value = view->hadjustment->page_size *
2961                                       (gdouble)dx / widget->allocation.width;
2962                         dvadj_value = view->vadjustment->page_size *
2963                                       (gdouble)dy / widget->allocation.height;
2964
2965                         /* clamp scrolling to visible area */
2966                         gtk_adjustment_set_value (view->hadjustment,
2967                                                   MIN(view->drag_info.hadj - dhadj_value,
2968                                                       view->hadjustment->upper -
2969                                                       view->hadjustment->page_size));
2970                         gtk_adjustment_set_value (view->vadjustment,
2971                                                   MIN(view->drag_info.vadj - dvadj_value,
2972                                                       view->vadjustment->upper -
2973                                                       view->vadjustment->page_size));
2974
2975                         return TRUE;
2976                 }
2977         } else if (view->pressed_button <= 0) {
2978                 ev_view_handle_cursor_over_xy (view, x, y);
2979                 return TRUE;
2980         }
2981
2982         return FALSE;
2983 }
2984
2985 static gboolean
2986 ev_view_button_release_event (GtkWidget      *widget,
2987                               GdkEventButton *event)
2988 {
2989         EvView *view = EV_VIEW (widget);
2990         EvLink *link = NULL;
2991
2992         view->drag_info.in_drag = FALSE;
2993         view->image_dnd_info.in_drag = FALSE;
2994
2995         if (view->pressed_button == 2) {
2996                 ev_view_handle_cursor_over_xy (view, event->x, event->y);
2997         }
2998
2999         if (view->document && view->pressed_button != 3) {
3000                 link = ev_view_get_link_at_location (view, event->x, event->y);
3001         }
3002
3003         view->pressed_button = -1;
3004
3005         if (view->selection_scroll_id) {
3006             g_source_remove (view->selection_scroll_id);
3007             view->selection_scroll_id = 0;
3008         }
3009         if (view->selection_update_id) {
3010             g_source_remove (view->selection_update_id);
3011             view->selection_update_id = 0;
3012         }
3013
3014         if (!view->selection_info.in_selection &&
3015             view->selection_info.style != EV_SELECTION_STYLE_GLYPH) {
3016                 compute_selections (view,
3017                                     view->selection_info.style,
3018                                     &(view->selection_info.start),
3019                                     &(view->selection_info.start));
3020         }
3021
3022         if (view->selection_info.selections) {
3023                 ev_view_update_primary_selection (view);
3024
3025                 if (view->selection_info.in_drag) {
3026                         clear_selection (view);
3027                         gtk_widget_queue_draw (widget);
3028                 }
3029
3030                 view->selection_info.in_drag = FALSE;
3031         } else if (link) {
3032                 if (event->button == 2) {
3033                         EvLinkAction    *action;
3034                         EvLinkActionType type;
3035
3036                         action = ev_link_get_action (link);
3037                         if (!action)
3038                                 return FALSE;
3039
3040                         type = ev_link_action_get_action_type (action);
3041                         if (type == EV_LINK_ACTION_TYPE_GOTO_DEST) {
3042                                 g_signal_emit (view,
3043                                                signals[SIGNAL_EXTERNAL_LINK],
3044                                                0, action);
3045                         }
3046                 } else {
3047                         ev_view_handle_link (view, link);
3048                 }
3049         } else if (view->presentation) {
3050                 switch (event->button) {
3051                         case 1:
3052                                 ev_view_next_page (view);
3053                                 return TRUE;
3054                         case 3:
3055                                 ev_view_previous_page (view);
3056                                 return TRUE;
3057                 }
3058         }
3059
3060         return FALSE;
3061 }
3062
3063 /* Goto Window */
3064 /* Cut and paste from gtkwindow.c */
3065 static void
3066 send_focus_change (GtkWidget *widget,
3067                    gboolean   in)
3068 {
3069         GdkEvent *fevent = gdk_event_new (GDK_FOCUS_CHANGE);
3070
3071         g_object_ref (widget);
3072
3073         if (in)
3074                 GTK_WIDGET_SET_FLAGS (widget, GTK_HAS_FOCUS);
3075         else
3076                 GTK_WIDGET_UNSET_FLAGS (widget, GTK_HAS_FOCUS);
3077
3078         fevent->focus_change.type = GDK_FOCUS_CHANGE;
3079         fevent->focus_change.window = g_object_ref (widget->window);
3080         fevent->focus_change.in = in;
3081
3082         gtk_widget_event (widget, fevent);
3083
3084         g_object_notify (G_OBJECT (widget), "has-focus");
3085
3086         g_object_unref (widget);
3087         gdk_event_free (fevent);
3088 }
3089
3090 static void
3091 ev_view_goto_window_hide (EvView *view)
3092 {
3093         /* send focus-in event */
3094         send_focus_change (view->goto_entry, FALSE);
3095         gtk_widget_hide (view->goto_window);
3096         gtk_entry_set_text (GTK_ENTRY (view->goto_entry), "");
3097 }
3098
3099 static gboolean
3100 ev_view_goto_window_delete_event (GtkWidget   *widget,
3101                                   GdkEventAny *event,
3102                                   EvView      *view)
3103 {
3104         ev_view_goto_window_hide (view);
3105
3106         return TRUE;
3107 }
3108
3109 static gboolean
3110 key_is_numeric (guint keyval)
3111 {
3112         return ((keyval >= GDK_0 && keyval <= GDK_9) ||
3113                 (keyval >= GDK_KP_0 && keyval <= GDK_KP_9));
3114 }
3115
3116 static gboolean
3117 ev_view_goto_window_key_press_event (GtkWidget   *widget,
3118                                      GdkEventKey *event,
3119                                      EvView      *view)
3120 {
3121         switch (event->keyval) {
3122                 case GDK_Escape:
3123                 case GDK_Tab:
3124                 case GDK_KP_Tab:
3125                 case GDK_ISO_Left_Tab:
3126                         ev_view_goto_window_hide (view);
3127                         return TRUE;
3128                 case GDK_Return:
3129                 case GDK_KP_Enter:
3130                 case GDK_ISO_Enter:
3131                 case GDK_BackSpace:
3132                 case GDK_Delete:
3133                         return FALSE;
3134                 default:
3135                         if (!key_is_numeric (event->keyval))
3136                                 return TRUE;
3137         }
3138
3139         return FALSE;
3140 }
3141
3142 static gboolean
3143 ev_view_goto_window_button_press_event (GtkWidget      *widget,
3144                                         GdkEventButton *event,
3145                                         EvView         *view)
3146 {
3147         ev_view_goto_window_hide (view);
3148
3149         return TRUE;
3150 }
3151
3152 static void
3153 ev_view_goto_entry_activate (GtkEntry *entry,
3154                              EvView   *view)
3155 {
3156         const gchar *text;
3157         gint         page;
3158
3159         text = gtk_entry_get_text (entry);
3160         page = atoi (text) - 1;
3161
3162         ev_view_goto_window_hide (view);
3163
3164         if (page >= 0 &&
3165             page < ev_page_cache_get_n_pages (view->page_cache))
3166                 ev_page_cache_set_current_page (view->page_cache, page);
3167 }
3168
3169 static void
3170 ev_view_goto_window_create (EvView *view)
3171 {
3172         GtkWidget *frame, *hbox, *toplevel, *label;
3173
3174         toplevel = gtk_widget_get_toplevel (GTK_WIDGET (view));
3175
3176         if (view->goto_window) {
3177                 if (GTK_WINDOW (toplevel)->group)
3178                         gtk_window_group_add_window (GTK_WINDOW (toplevel)->group,
3179                                                      GTK_WINDOW (view->goto_window));
3180                 else if (GTK_WINDOW (view->goto_window)->group)
3181                         gtk_window_group_remove_window (GTK_WINDOW (view->goto_window)->group,
3182                                                         GTK_WINDOW (view->goto_window));
3183                 return;
3184         }
3185
3186         view->goto_window = gtk_window_new (GTK_WINDOW_POPUP);
3187
3188         if (GTK_WINDOW (toplevel)->group)
3189                 gtk_window_group_add_window (GTK_WINDOW (toplevel)->group,
3190                                              GTK_WINDOW (view->goto_window));
3191
3192         gtk_window_set_modal (GTK_WINDOW (view->goto_window), TRUE);
3193
3194         g_signal_connect (view->goto_window, "delete_event",
3195                           G_CALLBACK (ev_view_goto_window_delete_event),
3196                           view);
3197         g_signal_connect (view->goto_window, "key_press_event",
3198                           G_CALLBACK (ev_view_goto_window_key_press_event),
3199                           view);
3200         g_signal_connect (view->goto_window, "button_press_event",
3201                           G_CALLBACK (ev_view_goto_window_button_press_event),
3202                           view);
3203
3204         frame = gtk_frame_new (NULL);
3205         gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_ETCHED_IN);
3206         gtk_container_add (GTK_CONTAINER (view->goto_window), frame);
3207         gtk_widget_show (frame);
3208
3209         hbox = gtk_hbox_new (FALSE, 0);
3210         gtk_container_set_border_width (GTK_CONTAINER (hbox), 3);
3211         gtk_container_add (GTK_CONTAINER (frame), hbox);
3212         gtk_widget_show (hbox);
3213
3214         label = gtk_label_new(_("Jump to page:"));
3215         gtk_box_pack_start (GTK_BOX (hbox), label, TRUE, TRUE, 3);
3216         gtk_widget_show (label);
3217         gtk_widget_realize (label);
3218
3219         view->goto_entry = gtk_entry_new ();
3220         g_signal_connect (view->goto_entry, "activate",
3221                           G_CALLBACK (ev_view_goto_entry_activate),
3222                           view);
3223         gtk_box_pack_start_defaults (GTK_BOX (hbox), view->goto_entry);
3224         gtk_widget_show (view->goto_entry);
3225         gtk_widget_realize (view->goto_entry);
3226 }
3227
3228 static void
3229 ev_view_goto_entry_grab_focus (EvView *view)
3230 {
3231         GtkWidgetClass *entry_parent_class;
3232
3233         entry_parent_class = g_type_class_peek_parent (GTK_ENTRY_GET_CLASS (view->goto_entry));
3234         (entry_parent_class->grab_focus) (view->goto_entry);
3235
3236         send_focus_change (view->goto_entry, TRUE);
3237 }
3238
3239 static void
3240 ev_view_goto_window_send_key_event (EvView   *view,
3241                                     GdkEvent *event)
3242 {
3243         GdkEventKey *new_event;
3244         GdkScreen   *screen;
3245
3246         /* Move goto window off screen */
3247         screen = gtk_widget_get_screen (GTK_WIDGET (view));
3248         gtk_window_move (GTK_WINDOW (view->goto_window),
3249                          gdk_screen_get_width (screen) + 1,
3250                          gdk_screen_get_height (screen) + 1);
3251         gtk_widget_show (view->goto_window);
3252
3253         new_event = (GdkEventKey *) gdk_event_copy (event);
3254         g_object_unref (new_event->window);
3255         new_event->window = g_object_ref (view->goto_window->window);
3256         gtk_widget_realize (view->goto_window);
3257
3258         gtk_widget_event (view->goto_window, (GdkEvent *)new_event);
3259         gdk_event_free ((GdkEvent *)new_event);
3260         gtk_widget_hide (view->goto_window);
3261 }
3262
3263 static gboolean
3264 ev_view_key_press_event (GtkWidget   *widget,
3265                          GdkEventKey *event)
3266 {
3267         EvView *view = EV_VIEW (widget);
3268         EvPresentationState current;
3269
3270         if (!view->document)
3271                 return FALSE;
3272
3273         if (!view->presentation ||
3274             view->presentation_state == EV_PRESENTATION_END)
3275                 return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
3276
3277
3278         current = view->presentation_state;
3279
3280         switch (event->keyval) {
3281                 case GDK_b:
3282                 case GDK_B:
3283                         view->presentation_state =
3284                                 (view->presentation_state == EV_PRESENTATION_BLACK) ?
3285                                 EV_PRESENTATION_NORMAL : EV_PRESENTATION_BLACK;
3286                         break;
3287                 case GDK_w:
3288                 case GDK_W:
3289                         view->presentation_state =
3290                                 (view->presentation_state == EV_PRESENTATION_WHITE) ?
3291                                 EV_PRESENTATION_NORMAL : EV_PRESENTATION_WHITE;
3292                         break;
3293                 default:
3294                         if (view->presentation_state == EV_PRESENTATION_BLACK ||
3295                             view->presentation_state == EV_PRESENTATION_WHITE) {
3296                                 view->presentation_state = EV_PRESENTATION_NORMAL;
3297                         }
3298         }
3299
3300         if (current == view->presentation_state) {
3301                 if (ev_page_cache_get_n_pages (view->page_cache) > 1 &&
3302                     key_is_numeric (event->keyval)) {
3303                         gint x, y;
3304
3305                         ev_view_goto_window_create (view);
3306                         ev_view_goto_window_send_key_event (view, (GdkEvent *)event);
3307                         gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
3308                         gtk_window_move (GTK_WINDOW (view->goto_window), x, y);
3309                         gtk_widget_show (view->goto_window);
3310                         ev_view_goto_entry_grab_focus (view);
3311
3312                         return TRUE;
3313                 }
3314
3315                 return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
3316         }
3317
3318         switch (view->presentation_state) {
3319                 case EV_PRESENTATION_NORMAL:
3320                 case EV_PRESENTATION_BLACK:
3321                         gdk_window_set_background (view->layout.bin_window,
3322                                                    &widget->style->black);
3323                         break;
3324                 case EV_PRESENTATION_WHITE:
3325                         gdk_window_set_background (view->layout.bin_window,
3326                                                    &widget->style->white);
3327                         break;
3328                 default:
3329                         return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
3330         }
3331
3332         gtk_widget_queue_draw (widget);
3333         return TRUE;
3334 }
3335
3336 static gint
3337 ev_view_focus_in (GtkWidget     *widget,
3338                   GdkEventFocus *event)
3339 {
3340         if (EV_VIEW (widget)->pixbuf_cache)
3341                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
3342         gtk_widget_queue_draw (widget);
3343
3344         return FALSE;
3345 }
3346
3347 static gint
3348 ev_view_focus_out (GtkWidget     *widget,
3349                      GdkEventFocus *event)
3350 {
3351         if (EV_VIEW (widget)->goto_window)
3352                 ev_view_goto_window_hide (EV_VIEW (widget));
3353
3354         if (EV_VIEW (widget)->pixbuf_cache)
3355                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
3356         gtk_widget_queue_draw (widget);
3357
3358         return FALSE;
3359 }
3360
3361 static gboolean
3362 ev_view_leave_notify_event (GtkWidget *widget, GdkEventCrossing   *event)
3363 {
3364         EvView *view = EV_VIEW (widget);
3365
3366         if (view->cursor != EV_VIEW_CURSOR_NORMAL)
3367                 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
3368
3369 #if !GTK_CHECK_VERSION (2, 11, 7)
3370         if (view->link_tooltip) {
3371                 view->hovered_link = NULL;
3372                 ev_tooltip_deactivate (EV_TOOLTIP (view->link_tooltip));
3373         }
3374 #endif
3375
3376         return FALSE;
3377 }
3378
3379 static gboolean
3380 ev_view_enter_notify_event (GtkWidget *widget, GdkEventCrossing   *event)
3381 {
3382         EvView *view = EV_VIEW (widget);
3383
3384         ev_view_handle_cursor_over_xy (view, event->x, event->y);
3385
3386         return FALSE;
3387 }
3388
3389 static void
3390 ev_view_style_set (GtkWidget *widget,
3391                    GtkStyle  *old_style)
3392 {
3393         if (EV_VIEW (widget)->pixbuf_cache)
3394                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
3395
3396         GTK_WIDGET_CLASS (ev_view_parent_class)->style_set (widget, old_style);
3397 }
3398
3399 /*** Drawing ***/
3400
3401 static guint32
3402 ev_gdk_color_to_rgb (const GdkColor *color)
3403 {
3404   guint32 result;
3405   result = (0xff0000 | (color->red & 0xff00));
3406   result <<= 8;
3407   result |= ((color->green & 0xff00) | (color->blue >> 8));
3408   return result;
3409 }
3410
3411 static void
3412 draw_rubberband (GtkWidget *widget, GdkWindow *window,
3413                  const GdkRectangle *rect, guchar alpha)
3414 {
3415         GdkGC *gc;
3416         GdkPixbuf *pixbuf;
3417         GdkColor *fill_color_gdk;
3418         guint fill_color;
3419
3420         fill_color_gdk = gdk_color_copy (&GTK_WIDGET (widget)->style->base[GTK_STATE_SELECTED]);
3421         fill_color = ev_gdk_color_to_rgb (fill_color_gdk) << 8 | alpha;
3422
3423         pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE, 8,
3424                                  rect->width, rect->height);
3425         gdk_pixbuf_fill (pixbuf, fill_color);
3426
3427         gdk_draw_pixbuf (window, NULL, pixbuf,
3428                          0, 0,
3429                          rect->x - EV_VIEW (widget)->scroll_x, rect->y - EV_VIEW (widget)->scroll_y,
3430                          rect->width, rect->height,
3431                          GDK_RGB_DITHER_NONE,
3432                          0, 0);
3433
3434         g_object_unref (pixbuf);
3435
3436         gc = gdk_gc_new (window);
3437         gdk_gc_set_rgb_fg_color (gc, fill_color_gdk);
3438         gdk_draw_rectangle (window, gc, FALSE,
3439                             rect->x - EV_VIEW (widget)->scroll_x, rect->y - EV_VIEW (widget)->scroll_y,
3440                             rect->width - 1,
3441                             rect->height - 1);
3442         g_object_unref (gc);
3443
3444         gdk_color_free (fill_color_gdk);
3445 }
3446
3447
3448 static void
3449 highlight_find_results (EvView *view, int page)
3450 {
3451         EvDocumentFind *find;
3452         int i, results = 0;
3453
3454         find = EV_DOCUMENT_FIND (view->document);
3455
3456         results = ev_document_find_get_n_results (find, page);
3457
3458         for (i = 0; i < results; i++) {
3459                 EvRectangle rectangle;
3460                 GdkRectangle view_rectangle;
3461                 guchar alpha;
3462
3463                 if (i == view->find_result && page == view->current_page) {
3464                         alpha = 0x90;
3465                 } else {
3466                         alpha = 0x20;
3467                 }
3468
3469                 ev_document_find_get_result (find, page, i, &rectangle);
3470                 doc_rect_to_view_rect (view, page, &rectangle, &view_rectangle);
3471                 draw_rubberband (GTK_WIDGET (view), view->layout.bin_window,
3472                                  &view_rectangle, alpha);
3473         }
3474 }
3475
3476 static void
3477 draw_loading_text (EvView       *view,
3478                    GdkRectangle *page_area,
3479                    GdkRectangle *expose_area)
3480 {
3481         cairo_t *cr;
3482         gint     width, height;
3483
3484         /* Don't annoy users with loading messages during presentations.
3485          * FIXME: Temporary "workaround" for
3486          * http://bugzilla.gnome.org/show_bug.cgi?id=320352 */
3487         if (view->presentation)
3488                 return;
3489
3490         if (!view->loading_text) {
3491                 const gchar *loading_text = _("Loading...");
3492                 PangoLayout *layout;
3493                 PangoFontDescription *font_desc;
3494                 PangoRectangle logical_rect;
3495                 gint target_width;
3496                 gdouble real_scale;
3497
3498                 ev_document_fc_mutex_lock ();
3499
3500                 layout = gtk_widget_create_pango_layout (GTK_WIDGET (view), loading_text);
3501
3502                 font_desc = pango_font_description_new ();
3503
3504                 /* We set the font to be 10 points, get the size, and scale appropriately */
3505                 pango_font_description_set_size (font_desc, 10 * PANGO_SCALE);
3506                 pango_layout_set_font_description (layout, font_desc);
3507                 pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
3508
3509                 target_width = MAX (page_area->width / 2, 1);
3510                 real_scale = ((double)target_width / (double) logical_rect.width) * (PANGO_SCALE * 10);
3511                 pango_font_description_set_size (font_desc, (int)real_scale);
3512                 pango_layout_set_font_description (layout, font_desc);
3513                 pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
3514
3515                 view->loading_text = cairo_image_surface_create (CAIRO_FORMAT_ARGB32,
3516                                                                  logical_rect.width,
3517                                                                  logical_rect.height);
3518                 cr = cairo_create (view->loading_text);
3519                 cairo_set_source_rgb (cr,
3520                                       155 / (double)255,
3521                                       155 / (double)255,
3522                                       155 / (double)255);
3523                 pango_cairo_show_layout (cr, layout);
3524                 cairo_destroy (cr);
3525
3526                 pango_font_description_free (font_desc);
3527                 g_object_unref (layout);
3528
3529                 ev_document_fc_mutex_unlock ();
3530         }
3531
3532         width = (page_area->width - cairo_image_surface_get_width (view->loading_text)) / 2;
3533         height = (page_area->height - cairo_image_surface_get_height (view->loading_text)) / 2;
3534
3535         cr = gdk_cairo_create (view->layout.bin_window);
3536         cairo_translate (cr,
3537                          page_area->x + width,
3538                          page_area->y + height);
3539         cairo_set_source_surface (cr, view->loading_text, 0, 0);
3540         cairo_paint (cr);
3541         cairo_destroy (cr);
3542 }
3543
3544 static void
3545 draw_one_page (EvView       *view,
3546                gint          page,
3547                cairo_t      *cr,
3548                GdkRectangle *page_area,
3549                GtkBorder    *border,
3550                GdkRectangle *expose_area,
3551                gboolean     *page_ready)
3552 {
3553         GdkRectangle overlap;
3554         GdkRectangle real_page_area;
3555
3556         g_assert (view->document);
3557
3558         if (! gdk_rectangle_intersect (page_area, expose_area, &overlap))
3559                 return;
3560
3561         /* Render the document itself */
3562         real_page_area = *page_area;
3563
3564         real_page_area.x += border->left;
3565         real_page_area.y += border->top;
3566         real_page_area.width -= (border->left + border->right);
3567         real_page_area.height -= (border->top + border->bottom);
3568         *page_ready = TRUE;
3569
3570         if (!view->presentation) {
3571                 gint current_page;
3572
3573                 current_page = ev_page_cache_get_current_page (view->page_cache);
3574                 ev_document_misc_paint_one_page (view->layout.bin_window,
3575                                                  GTK_WIDGET (view),
3576                                                  page_area, border,
3577                                                  page == current_page);
3578         }
3579
3580         if (gdk_rectangle_intersect (&real_page_area, expose_area, &overlap)) {
3581                 gint             width, height;
3582                 gint             page_width, page_height;
3583                 cairo_surface_t *page_surface = NULL;
3584                 gint             selection_width, selection_height;
3585                 cairo_surface_t *selection_surface = NULL;
3586
3587                 page_surface = ev_pixbuf_cache_get_surface (view->pixbuf_cache, page);
3588
3589                 if (!page_surface) {
3590                         draw_loading_text (view,
3591                                            &real_page_area,
3592                                            expose_area);
3593                         *page_ready = FALSE;
3594
3595                         return;
3596                 }
3597
3598                 ev_page_cache_get_size (view->page_cache,
3599                                         page, view->rotation,
3600                                         view->scale,
3601                                         &width, &height);
3602
3603                 page_width = cairo_image_surface_get_width (page_surface);
3604                 page_height = cairo_image_surface_get_height (page_surface);
3605
3606                 cairo_save (cr);
3607                 cairo_translate (cr, overlap.x, overlap.y);
3608
3609                 if (width != page_width || height != page_height) {
3610                         cairo_pattern_set_filter (cairo_get_source (cr),
3611                                                   CAIRO_FILTER_FAST);
3612                         cairo_scale (cr,
3613                                      (gdouble)width / page_width,
3614                                      (gdouble)height / page_height);
3615                 }
3616
3617                 cairo_surface_set_device_offset (page_surface,
3618                                                  overlap.x - real_page_area.x,
3619                                                  overlap.y - real_page_area.y);
3620                 cairo_set_source_surface (cr, page_surface, 0, 0);
3621                 cairo_paint (cr);
3622                 cairo_restore (cr);
3623
3624                 /* Get the selection pixbuf iff we have something to draw */
3625                 if (find_selection_for_page (view, page) &&
3626                     view->selection_mode == EV_VIEW_SELECTION_TEXT) {
3627                         selection_surface =
3628                                 ev_pixbuf_cache_get_selection_surface (view->pixbuf_cache,
3629                                                                        page,
3630                                                                        view->scale,
3631                                                                        NULL);
3632                 }
3633
3634                 if (!selection_surface) {
3635                         return;
3636                 }
3637
3638                 selection_width = cairo_image_surface_get_width (selection_surface);
3639                 selection_height = cairo_image_surface_get_height (selection_surface);
3640
3641                 cairo_save (cr);
3642                 cairo_translate (cr, overlap.x, overlap.y);
3643
3644                 if (width != selection_width || height != selection_height) {
3645                         cairo_pattern_set_filter (cairo_get_source (cr),
3646                                                   CAIRO_FILTER_FAST);
3647                         cairo_scale (cr,
3648                                      (gdouble)width / selection_width,
3649                                      (gdouble)height / selection_height);
3650                 }
3651
3652                 cairo_surface_set_device_offset (selection_surface,
3653                                                  overlap.x - real_page_area.x,
3654                                                  overlap.y - real_page_area.y);
3655                 cairo_set_source_surface (cr, selection_surface, 0, 0);
3656                 cairo_paint (cr);
3657                 cairo_restore (cr);
3658         }
3659 }
3660
3661 /*** GObject functions ***/
3662
3663 static void
3664 ev_view_finalize (GObject *object)
3665 {
3666         EvView *view = EV_VIEW (object);
3667
3668         g_free (view->find_status);
3669
3670         clear_selection (view);
3671
3672         if (view->image_dnd_info.image)
3673                 g_object_unref (view->image_dnd_info.image);
3674         view->image_dnd_info.image = NULL;
3675
3676         G_OBJECT_CLASS (ev_view_parent_class)->finalize (object);
3677 }
3678
3679 static void
3680 ev_view_destroy (GtkObject *object)
3681 {
3682         EvView *view = EV_VIEW (object);
3683
3684         if (view->document) {
3685                 g_object_unref (view->document);
3686                 view->document = NULL;
3687         }
3688
3689         if (view->pixbuf_cache) {
3690                 g_object_unref (view->pixbuf_cache);
3691                 view->pixbuf_cache = NULL;
3692         }
3693
3694 #if !GTK_CHECK_VERSION (2, 11, 7)
3695         if (view->link_tooltip) {
3696                 gtk_widget_destroy (view->link_tooltip);
3697                 view->link_tooltip = NULL;
3698         }
3699 #endif
3700         if (view->goto_window) {
3701                 gtk_widget_destroy (view->goto_window);
3702                 view->goto_window = NULL;
3703                 view->goto_entry = NULL;
3704         }
3705
3706         if (view->selection_scroll_id) {
3707             g_source_remove (view->selection_scroll_id);
3708             view->selection_scroll_id = 0;
3709         }
3710
3711         if (view->selection_update_id) {
3712             g_source_remove (view->selection_update_id);
3713             view->selection_update_id = 0;
3714         }
3715
3716         if (view->loading_text) {
3717                 cairo_surface_destroy (view->loading_text);
3718                 view->loading_text = NULL;
3719         }
3720
3721         ev_view_presentation_transition_stop (view);
3722
3723         ev_view_set_scroll_adjustments (GTK_LAYOUT (view), NULL, NULL);
3724
3725         GTK_OBJECT_CLASS (ev_view_parent_class)->destroy (object);
3726 }
3727
3728 static void
3729 ev_view_set_property (GObject      *object,
3730                       guint         prop_id,
3731                       const GValue *value,
3732                       GParamSpec   *pspec)
3733 {
3734         EvView *view = EV_VIEW (object);
3735
3736         switch (prop_id) {
3737                 case PROP_CONTINUOUS:
3738                         ev_view_set_continuous (view, g_value_get_boolean (value));
3739                         break;
3740                 case PROP_DUAL_PAGE:
3741                         ev_view_set_dual_page (view, g_value_get_boolean (value));
3742                         break;
3743                 case PROP_FULLSCREEN:
3744                         ev_view_set_fullscreen (view, g_value_get_boolean (value));
3745                         break;
3746                 case PROP_PRESENTATION:
3747                         ev_view_set_presentation (view, g_value_get_boolean (value));
3748                         break;
3749                 case PROP_SIZING_MODE:
3750                         ev_view_set_sizing_mode (view, g_value_get_enum (value));
3751                         break;
3752                 case PROP_ZOOM:
3753                         ev_view_set_zoom (view, g_value_get_double (value), FALSE);
3754                         break;
3755                 case PROP_ROTATION:
3756                         ev_view_set_rotation (view, g_value_get_int (value));
3757                         break;
3758                 default:
3759                         G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
3760         }
3761 }
3762
3763 static AtkObject *
3764 ev_view_get_accessible (GtkWidget *widget)
3765 {
3766         static gboolean first_time = TRUE;
3767
3768         if (first_time) {
3769                 AtkObjectFactory *factory;
3770                 AtkRegistry *registry;
3771                 GType derived_type;
3772                 GType derived_atk_type;
3773
3774                 /*
3775                  * Figure out whether accessibility is enabled by looking at the
3776                  * type of the accessible object which would be created for
3777                  * the parent type of EvView.
3778                  */
3779                 derived_type = g_type_parent (EV_TYPE_VIEW);
3780
3781                 registry = atk_get_default_registry ();
3782                 factory = atk_registry_get_factory (registry,
3783                                                     derived_type);
3784                 derived_atk_type = atk_object_factory_get_accessible_type (factory);
3785                 if (g_type_is_a (derived_atk_type, GTK_TYPE_ACCESSIBLE))
3786                         atk_registry_set_factory_type (registry,
3787                                                        EV_TYPE_VIEW,
3788                                                        ev_view_accessible_factory_get_type ());
3789                 first_time = FALSE;
3790         }
3791         return GTK_WIDGET_CLASS (ev_view_parent_class)->get_accessible (widget);
3792 }
3793
3794 static void
3795 ev_view_get_property (GObject *object,
3796                       guint prop_id,
3797                       GValue *value,
3798                       GParamSpec *pspec)
3799 {
3800         EvView *view = EV_VIEW (object);
3801
3802         switch (prop_id) {
3803                 case PROP_FIND_STATUS:
3804                         g_value_set_string (value, view->find_status);
3805                         break;
3806                 case PROP_CONTINUOUS:
3807                         g_value_set_boolean (value, view->continuous);
3808                         break;
3809                 case PROP_DUAL_PAGE:
3810                         g_value_set_boolean (value, view->dual_page);
3811                         break;
3812                 case PROP_FULLSCREEN:
3813                         g_value_set_boolean (value, view->fullscreen);
3814                         break;
3815                 case PROP_PRESENTATION:
3816                         g_value_set_boolean (value, view->presentation);
3817                         break;
3818                 case PROP_SIZING_MODE:
3819                         g_value_set_enum (value, view->sizing_mode);
3820                         break;
3821                 case PROP_ZOOM:
3822                         g_value_set_double (value, view->scale);
3823                         break;
3824                 case PROP_ROTATION:
3825                         g_value_set_int (value, view->rotation);
3826                         break;
3827                 case PROP_HAS_SELECTION:
3828                         g_value_set_boolean (value,
3829                                              view->selection_info.selections != NULL);
3830                         break;
3831                 default:
3832                         G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
3833         }
3834 }
3835
3836 static void
3837 ev_view_class_init (EvViewClass *class)
3838 {
3839         GObjectClass *object_class = G_OBJECT_CLASS (class);
3840         GtkObjectClass *gtk_object_class = GTK_OBJECT_CLASS (class);
3841         GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
3842         GtkLayoutClass *layout_class = GTK_LAYOUT_CLASS (class);
3843         GtkBindingSet *binding_set;
3844
3845         object_class->finalize = ev_view_finalize;
3846         object_class->set_property = ev_view_set_property;
3847         object_class->get_property = ev_view_get_property;
3848
3849         widget_class->expose_event = ev_view_expose_event;
3850         widget_class->button_press_event = ev_view_button_press_event;
3851         widget_class->motion_notify_event = ev_view_motion_notify_event;
3852         widget_class->button_release_event = ev_view_button_release_event;
3853         widget_class->key_press_event = ev_view_key_press_event;
3854         widget_class->focus_in_event = ev_view_focus_in;
3855         widget_class->focus_out_event = ev_view_focus_out;
3856         widget_class->get_accessible = ev_view_get_accessible;
3857         widget_class->size_request = ev_view_size_request;
3858         widget_class->size_allocate = ev_view_size_allocate;
3859         widget_class->realize = ev_view_realize;
3860         widget_class->scroll_event = ev_view_scroll_event;
3861         widget_class->enter_notify_event = ev_view_enter_notify_event;
3862         widget_class->leave_notify_event = ev_view_leave_notify_event;
3863         widget_class->style_set = ev_view_style_set;
3864         widget_class->drag_data_get = ev_view_drag_data_get;
3865         widget_class->drag_motion = ev_view_drag_motion;
3866         widget_class->drag_data_received = ev_view_drag_data_received;
3867         widget_class->popup_menu = ev_view_popup_menu;
3868 #if GTK_CHECK_VERSION (2, 11, 7)
3869         widget_class->query_tooltip = ev_view_query_tooltip;
3870 #endif
3871
3872         gtk_object_class->destroy = ev_view_destroy;
3873
3874         layout_class->set_scroll_adjustments = ev_view_set_scroll_adjustments;
3875
3876         class->binding_activated = ev_view_scroll;
3877
3878         signals[SIGNAL_BINDING_ACTIVATED] = g_signal_new ("binding_activated",
3879                          G_TYPE_FROM_CLASS (object_class),
3880                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
3881                          G_STRUCT_OFFSET (EvViewClass, binding_activated),
3882                          NULL, NULL,
3883                          ev_marshal_VOID__ENUM_BOOLEAN,
3884                          G_TYPE_NONE, 2,
3885                          GTK_TYPE_SCROLL_TYPE,
3886                          G_TYPE_BOOLEAN);
3887
3888         signals[SIGNAL_ZOOM_INVALID] = g_signal_new ("zoom-invalid",
3889                          G_TYPE_FROM_CLASS (object_class),
3890                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
3891                          G_STRUCT_OFFSET (EvViewClass, zoom_invalid),
3892                          NULL, NULL,
3893                          ev_marshal_VOID__VOID,
3894                          G_TYPE_NONE, 0, G_TYPE_NONE);
3895         signals[SIGNAL_HANDLE_LINK] = g_signal_new ("handle-link",
3896                          G_TYPE_FROM_CLASS (object_class),
3897                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
3898                          G_STRUCT_OFFSET (EvViewClass, handle_link),
3899                          NULL, NULL,
3900                          g_cclosure_marshal_VOID__OBJECT,
3901                          G_TYPE_NONE, 1,
3902                          G_TYPE_OBJECT);
3903         signals[SIGNAL_EXTERNAL_LINK] = g_signal_new ("external-link",
3904                          G_TYPE_FROM_CLASS (object_class),
3905                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
3906                          G_STRUCT_OFFSET (EvViewClass, external_link),
3907                          NULL, NULL,
3908                          g_cclosure_marshal_VOID__OBJECT,
3909                          G_TYPE_NONE, 1,
3910                          G_TYPE_OBJECT);
3911         signals[SIGNAL_POPUP_MENU] = g_signal_new ("popup",
3912                          G_TYPE_FROM_CLASS (object_class),
3913                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
3914                          G_STRUCT_OFFSET (EvViewClass, popup_menu),
3915                          NULL, NULL,
3916                          g_cclosure_marshal_VOID__OBJECT,
3917                          G_TYPE_NONE, 1,
3918                          G_TYPE_OBJECT);
3919
3920
3921         g_object_class_install_property (object_class,
3922                                          PROP_FIND_STATUS,
3923                                          g_param_spec_string ("find-status",
3924                                                               "Find Status Message",
3925                                                               "The find status message",
3926                                                               NULL,
3927                                                               G_PARAM_READABLE));
3928
3929         g_object_class_install_property (object_class,
3930                                          PROP_CONTINUOUS,
3931                                          g_param_spec_boolean ("continuous",
3932                                                                "Continuous",
3933                                                                "Continuous scrolling mode",
3934                                                                TRUE,
3935                                                                G_PARAM_READWRITE));
3936
3937         g_object_class_install_property (object_class,
3938                                          PROP_DUAL_PAGE,
3939                                          g_param_spec_boolean ("dual-page",
3940                                                                "Dual Page",
3941                                                                "Two pages visible at once",
3942                                                                FALSE,
3943                                                                G_PARAM_READWRITE));
3944         g_object_class_install_property (object_class,
3945                                          PROP_FULLSCREEN,
3946                                          g_param_spec_boolean ("fullscreen",
3947                                                                "Full Screen",
3948                                                                "Draw page in a fullscreen fashion",
3949                                                                FALSE,
3950                                                                G_PARAM_READWRITE));
3951         g_object_class_install_property (object_class,
3952                                          PROP_PRESENTATION,
3953                                          g_param_spec_boolean ("presentation",
3954                                                                "Presentation",
3955                                                                "Draw page in presentation mode",
3956                                                                TRUE,
3957                                                                G_PARAM_READWRITE));
3958
3959         g_object_class_install_property (object_class,
3960                                          PROP_SIZING_MODE,
3961                                          g_param_spec_enum ("sizing-mode",
3962                                                             "Sizing Mode",
3963                                                             "Sizing Mode",
3964                                                             EV_TYPE_SIZING_MODE,
3965                                                             EV_SIZING_FIT_WIDTH,
3966                                                             G_PARAM_READWRITE));
3967
3968         g_object_class_install_property (object_class,
3969                                          PROP_ZOOM,
3970                                          g_param_spec_double ("zoom",
3971                                                               "Zoom factor",
3972                                                               "Zoom factor",
3973                                                               0,
3974                                                               G_MAXDOUBLE,
3975                                                               1.0,
3976                                                               G_PARAM_READWRITE));
3977         g_object_class_install_property (object_class,
3978                                          PROP_ROTATION,
3979                                          g_param_spec_double ("rotation",
3980                                                               "Rotation",
3981                                                               "Rotation",
3982                                                               0,
3983                                                               360,
3984                                                               0,
3985                                                               G_PARAM_READWRITE));
3986         g_object_class_install_property (object_class,
3987                                          PROP_HAS_SELECTION,
3988                                          g_param_spec_boolean ("has-selection",
3989                                                                "Has selection",
3990                                                                "The view has selections",
3991                                                                FALSE,
3992                                                                G_PARAM_READABLE));
3993
3994         binding_set = gtk_binding_set_by_class (class);
3995
3996         add_scroll_binding_keypad (binding_set, GDK_Left,  0, EV_SCROLL_STEP_BACKWARD, TRUE);
3997         add_scroll_binding_keypad (binding_set, GDK_Right, 0, EV_SCROLL_STEP_FORWARD,  TRUE);
3998         add_scroll_binding_keypad (binding_set, GDK_Left,  GDK_MOD1_MASK, EV_SCROLL_STEP_DOWN, TRUE);
3999         add_scroll_binding_keypad (binding_set, GDK_Right, GDK_MOD1_MASK, EV_SCROLL_STEP_UP,  TRUE);
4000         add_scroll_binding_keypad (binding_set, GDK_Up,    0, EV_SCROLL_STEP_BACKWARD, FALSE);
4001         add_scroll_binding_keypad (binding_set, GDK_Down,  0, EV_SCROLL_STEP_FORWARD,  FALSE);
4002         add_scroll_binding_keypad (binding_set, GDK_Up,    GDK_MOD1_MASK, EV_SCROLL_STEP_DOWN, FALSE);
4003         add_scroll_binding_keypad (binding_set, GDK_Down,  GDK_MOD1_MASK, EV_SCROLL_STEP_UP,  FALSE);
4004         gtk_binding_entry_add_signal (binding_set, GDK_H, 0, "binding_activated", 2, EV_TYPE_SCROLL_TYPE,
4005                                       EV_SCROLL_STEP_BACKWARD, G_TYPE_BOOLEAN, TRUE);
4006         gtk_binding_entry_add_signal (binding_set, GDK_J, 0, "binding_activated", 2, EV_TYPE_SCROLL_TYPE,
4007                                       EV_SCROLL_STEP_FORWARD, G_TYPE_BOOLEAN, FALSE);
4008         gtk_binding_entry_add_signal (binding_set, GDK_K, 0, "binding_activated", 2, EV_TYPE_SCROLL_TYPE,
4009                                       EV_SCROLL_STEP_BACKWARD, G_TYPE_BOOLEAN, FALSE);
4010         gtk_binding_entry_add_signal (binding_set, GDK_L, 0, "binding_activated", 2, EV_TYPE_SCROLL_TYPE,
4011                                       EV_SCROLL_STEP_FORWARD, G_TYPE_BOOLEAN, TRUE);
4012
4013 }
4014
4015 static void
4016 ev_view_init (EvView *view)
4017 {
4018         GTK_WIDGET_SET_FLAGS (view, GTK_CAN_FOCUS);
4019
4020         view->spacing = 5;
4021         view->scale = 1.0;
4022         view->current_page = 0;
4023         view->pressed_button = -1;
4024         view->cursor = EV_VIEW_CURSOR_NORMAL;
4025         view->drag_info.in_drag = FALSE;
4026         view->selection_info.selections = NULL;
4027         view->selection_info.in_selection = FALSE;
4028         view->selection_info.in_drag = FALSE;
4029         view->selection_mode = EV_VIEW_SELECTION_TEXT;
4030         view->continuous = TRUE;
4031         view->dual_page = FALSE;
4032         view->presentation = FALSE;
4033         view->presentation_state = EV_PRESENTATION_NORMAL;
4034         view->fullscreen = FALSE;
4035         view->sizing_mode = EV_SIZING_FIT_WIDTH;
4036         view->pending_scroll = SCROLL_TO_KEEP_POSITION;
4037         view->jump_to_find_result = TRUE;
4038         view->highlight_find_results = FALSE;
4039
4040         gtk_layout_set_hadjustment (GTK_LAYOUT (view), NULL);
4041         gtk_layout_set_vadjustment (GTK_LAYOUT (view), NULL);
4042
4043         gtk_drag_dest_set (GTK_WIDGET (view),
4044                            GTK_DEST_DEFAULT_ALL,
4045                            view_drop_targets,
4046                            G_N_ELEMENTS (view_drop_targets),
4047                            GDK_ACTION_COPY);
4048 }
4049
4050 /*** Callbacks ***/
4051
4052 static void
4053 find_changed_cb (EvDocument *document, int page, EvView *view)
4054 {
4055         double percent;
4056         int n_pages;
4057
4058         percent = ev_document_find_get_progress
4059                         (EV_DOCUMENT_FIND (view->document));
4060         n_pages = ev_page_cache_get_n_pages (view->page_cache);
4061
4062         if (view->jump_to_find_result == TRUE) {
4063                 jump_to_find_page (view, EV_VIEW_FIND_NEXT, 0);
4064                 jump_to_find_result (view);
4065         }
4066         update_find_status_message (view, percent * n_pages >= n_pages - 1 );
4067         if (view->current_page == page)
4068                 gtk_widget_queue_draw (GTK_WIDGET (view));
4069 }
4070
4071 static void
4072 job_finished_cb (EvPixbufCache *pixbuf_cache,
4073                  GdkRegion     *region,
4074                  EvView        *view)
4075 {
4076         if (region) {
4077                 gdk_window_invalidate_region (view->layout.bin_window,
4078                                               region, TRUE);
4079         } else {
4080                 gtk_widget_queue_draw (GTK_WIDGET (view));
4081         }
4082 }
4083
4084 static void
4085 page_changed_cb (EvPageCache *page_cache,
4086                  int          new_page,
4087                  EvView      *view)
4088 {
4089         if (view->current_page != new_page) {
4090                 gint x, y;
4091
4092                 view->current_page = new_page;
4093                 view->pending_scroll = SCROLL_TO_PAGE_POSITION;
4094
4095                 if (view->presentation)
4096                         ev_view_presentation_transition_start (view);
4097
4098                 gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
4099                 ev_view_handle_cursor_over_xy (view, x, y);
4100
4101                 gtk_widget_queue_resize (GTK_WIDGET (view));
4102         } else {
4103                 gtk_widget_queue_draw (GTK_WIDGET (view));
4104         }
4105
4106         if (EV_IS_DOCUMENT_FIND (view->document)) {
4107                 view->find_result = 0;
4108                 update_find_status_message (view, TRUE);
4109         }
4110 }
4111
4112 static void
4113 on_adjustment_value_changed (GtkAdjustment *adjustment,
4114                              EvView        *view)
4115 {
4116         int dx = 0, dy = 0;
4117         gint x, y;
4118         GList *children, *l;
4119
4120         if (! GTK_WIDGET_REALIZED (view))
4121                 return;
4122
4123         if (view->hadjustment) {
4124                 dx = view->scroll_x - (int) view->hadjustment->value;
4125                 view->scroll_x = (int) view->hadjustment->value;
4126         } else {
4127                 view->scroll_x = 0;
4128         }
4129
4130         if (view->vadjustment) {
4131                 dy = view->scroll_y - (int) view->vadjustment->value;
4132                 view->scroll_y = (int) view->vadjustment->value;
4133         } else {
4134                 view->scroll_y = 0;
4135         }
4136
4137         children = gtk_container_get_children (GTK_CONTAINER (view));
4138         for (l = children; l && l->data; l = g_list_next (l)) {
4139                 gint       child_x, child_y;
4140                 GtkWidget *child = (GtkWidget *)l->data;
4141
4142                 gtk_container_child_get (GTK_CONTAINER (view),
4143                                          child,
4144                                          "x", &child_x,
4145                                          "y", &child_y,
4146                                          NULL);
4147                 gtk_layout_move (GTK_LAYOUT (view), child, child_x + dx, child_y + dy);
4148         }
4149         g_list_free (children);
4150
4151         if (view->pending_resize)
4152                 gtk_widget_queue_draw (GTK_WIDGET (view));
4153         else
4154                 gdk_window_scroll (view->layout.bin_window, dx, dy);
4155
4156         gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
4157         ev_view_handle_cursor_over_xy (view, x, y);
4158
4159         if (view->document)
4160                 view_update_range_and_current_page (view);
4161 }
4162
4163 GtkWidget*
4164 ev_view_new (void)
4165 {
4166         GtkWidget *view;
4167
4168         view = g_object_new (EV_TYPE_VIEW, NULL);
4169
4170         return view;
4171 }
4172
4173 static void
4174 setup_caches (EvView *view)
4175 {
4176         view->page_cache = ev_page_cache_get (view->document);
4177         g_signal_connect (view->page_cache, "page-changed", G_CALLBACK (page_changed_cb), view);
4178         view->pixbuf_cache = ev_pixbuf_cache_new (GTK_WIDGET (view), view->document);
4179         g_signal_connect (view->pixbuf_cache, "job-finished", G_CALLBACK (job_finished_cb), view);
4180         page_changed_cb (view->page_cache,
4181                          ev_page_cache_get_current_page (view->page_cache),
4182                          view);
4183 }
4184
4185 static void
4186 clear_caches (EvView *view)
4187 {
4188         if (view->pixbuf_cache) {
4189                 g_object_unref (view->pixbuf_cache);
4190                 view->pixbuf_cache = NULL;
4191         }
4192
4193         if (view->page_cache) {
4194                 view->page_cache = NULL;
4195         }
4196 }
4197
4198 void
4199 ev_view_set_loading (EvView       *view,
4200                      gboolean      loading)
4201 {
4202         view->loading = loading;
4203         gtk_widget_queue_draw (GTK_WIDGET (view));
4204 }
4205
4206 void
4207 ev_view_set_document (EvView     *view,
4208                       EvDocument *document)
4209 {
4210         g_return_if_fail (EV_IS_VIEW (view));
4211
4212         view->loading = FALSE;
4213
4214         if (document != view->document) {
4215                 clear_caches (view);
4216
4217                 if (view->document) {
4218                         g_signal_handlers_disconnect_by_func (view->document,
4219                                                               find_changed_cb,
4220                                                               view);
4221                         g_object_unref (view->document);
4222                         view->page_cache = NULL;
4223
4224                 }
4225
4226                 view->document = document;
4227                 view->find_result = 0;
4228
4229                 if (view->document) {
4230                         g_object_ref (view->document);
4231                         if (EV_IS_DOCUMENT_FIND (view->document)) {
4232                                 g_signal_connect (view->document,
4233                                                   "find_changed",
4234                                                   G_CALLBACK (find_changed_cb),
4235                                                   view);
4236                         }
4237
4238                         setup_caches (view);
4239                 }
4240
4241                 gtk_widget_queue_resize (GTK_WIDGET (view));
4242         }
4243 }
4244
4245 /*** Zoom and sizing mode ***/
4246
4247 #define EPSILON 0.0000001
4248 void
4249 ev_view_set_zoom (EvView   *view,
4250                   double    factor,
4251                   gboolean  relative)
4252 {
4253         double scale;
4254
4255         if (relative)
4256                 scale = view->scale * factor;
4257         else
4258                 scale = factor;
4259
4260         scale = CLAMP (scale, view->min_scale, view->max_scale);
4261
4262         if (ABS (view->scale - scale) < EPSILON)
4263                 return;
4264
4265         if (view->loading_text) {
4266                 cairo_surface_destroy (view->loading_text);
4267                 view->loading_text = NULL;
4268         }
4269
4270         view->scale = scale;
4271         view->pending_resize = TRUE;
4272
4273         gtk_widget_queue_resize (GTK_WIDGET (view));
4274
4275         g_object_notify (G_OBJECT (view), "zoom");
4276 }
4277
4278 double
4279 ev_view_get_zoom (EvView *view)
4280 {
4281         return view->scale;
4282 }
4283
4284 void
4285 ev_view_set_screen_dpi (EvView  *view,
4286                         gdouble  dpi)
4287 {
4288         g_return_if_fail (EV_IS_VIEW (view));
4289         g_return_if_fail (dpi > 0);
4290
4291         view->dpi = dpi;
4292         view->min_scale = MIN_SCALE * dpi / 72.0;
4293         view->max_scale = MAX_SCALE * dpi / 72.0;
4294 }
4295
4296 gboolean
4297 ev_view_get_continuous (EvView *view)
4298 {
4299         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
4300
4301         return view->continuous;
4302 }
4303
4304 void
4305 ev_view_set_continuous (EvView   *view,
4306                         gboolean  continuous)
4307 {
4308         g_return_if_fail (EV_IS_VIEW (view));
4309
4310         continuous = continuous != FALSE;
4311
4312         if (view->continuous != continuous) {
4313                 view->continuous = continuous;
4314                 view->pending_scroll = SCROLL_TO_PAGE_POSITION;
4315                 gtk_widget_queue_resize (GTK_WIDGET (view));
4316         }
4317
4318         g_object_notify (G_OBJECT (view), "continuous");
4319 }
4320
4321 gboolean
4322 ev_view_get_dual_page (EvView *view)
4323 {
4324         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
4325
4326         return view->dual_page;
4327 }
4328
4329 void
4330 ev_view_set_dual_page (EvView   *view,
4331                        gboolean  dual_page)
4332 {
4333         g_return_if_fail (EV_IS_VIEW (view));
4334
4335         dual_page = dual_page != FALSE;
4336
4337         if (view->dual_page == dual_page)
4338                 return;
4339
4340         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
4341         view->dual_page = dual_page;
4342         /* FIXME: if we're keeping the pixbuf cache around, we should extend the
4343          * preload_cache_size to be 2 if dual_page is set.
4344          */
4345         gtk_widget_queue_resize (GTK_WIDGET (view));
4346
4347         g_object_notify (G_OBJECT (view), "dual-page");
4348 }
4349
4350 void
4351 ev_view_set_fullscreen (EvView   *view,
4352                          gboolean  fullscreen)
4353 {
4354         g_return_if_fail (EV_IS_VIEW (view));
4355
4356         fullscreen = fullscreen != FALSE;
4357
4358         if (view->fullscreen == fullscreen)
4359                 return;
4360
4361         view->fullscreen = fullscreen;
4362         gtk_widget_queue_resize (GTK_WIDGET (view));
4363
4364         g_object_notify (G_OBJECT (view), "fullscreen");
4365 }
4366
4367 gboolean
4368 ev_view_get_fullscreen (EvView *view)
4369 {
4370         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
4371
4372         return view->fullscreen;
4373 }
4374
4375 void
4376 ev_view_set_presentation (EvView   *view,
4377                           gboolean  presentation)
4378 {
4379         g_return_if_fail (EV_IS_VIEW (view));
4380
4381         presentation = presentation != FALSE;
4382
4383         if (view->presentation == presentation)
4384                 return;
4385
4386         if (!presentation)
4387                 view->presentation_state = EV_PRESENTATION_NORMAL;
4388
4389         view->presentation = presentation;
4390         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
4391
4392         if (presentation) {
4393                 view->sizing_mode_saved = view->sizing_mode;
4394                 view->scale_saved = view->scale;
4395                 ev_view_set_sizing_mode (view, EV_SIZING_BEST_FIT);
4396         } else {
4397                 ev_view_set_sizing_mode (view, view->sizing_mode_saved);
4398                 ev_view_set_zoom (view, view->scale_saved, FALSE);
4399         }
4400
4401         gtk_widget_queue_resize (GTK_WIDGET (view));
4402
4403         if (presentation)
4404                 ev_view_presentation_transition_start (view);
4405         else
4406                 ev_view_presentation_transition_stop (view);
4407
4408         if (GTK_WIDGET_REALIZED (view)) {
4409                 if (view->presentation)
4410                         gdk_window_set_background (view->layout.bin_window,
4411                                                    &GTK_WIDGET (view)->style->black);
4412                 else
4413                         gdk_window_set_background (view->layout.bin_window,
4414                                                    &GTK_WIDGET (view)->style->mid [GTK_STATE_NORMAL]);
4415         }
4416
4417         g_object_notify (G_OBJECT (view), "presentation");
4418 }
4419
4420 gboolean
4421 ev_view_get_presentation (EvView *view)
4422 {
4423         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
4424
4425         return view->presentation;
4426 }
4427
4428 static gboolean
4429 transition_next_page (EvView *view)
4430 {
4431         ev_view_next_page (view);
4432
4433         return FALSE;
4434 }
4435
4436 static void
4437 ev_view_presentation_transition_stop (EvView *view)
4438 {
4439         if (view->trans_timeout_id > 0)
4440                 g_source_remove (view->trans_timeout_id);
4441         view->trans_timeout_id = 0;
4442 }
4443
4444 static void
4445 ev_view_presentation_transition_start (EvView *view)
4446 {
4447         gdouble duration;
4448
4449         if (!EV_IS_DOCUMENT_TRANSITION (view->document))
4450                 return;
4451
4452         ev_view_presentation_transition_stop (view);
4453
4454         duration = ev_document_transition_get_page_duration (EV_DOCUMENT_TRANSITION (view->document),
4455                                                              view->current_page);
4456         if (duration > 0) {
4457 #if GLIB_CHECK_VERSION (2, 13, 0)
4458                 view->trans_timeout_id =
4459                         g_timeout_add_seconds (duration,
4460                                                (GSourceFunc) transition_next_page,
4461                                                view);
4462 #else
4463                 view->trans_timeout_id =
4464                         g_timeout_add (duration * 1000,
4465                                        (GSourceFunc) transition_next_page,
4466                                        view);
4467 #endif
4468         }
4469 }
4470
4471 void
4472 ev_view_set_sizing_mode (EvView       *view,
4473                          EvSizingMode  sizing_mode)
4474 {
4475         g_return_if_fail (EV_IS_VIEW (view));
4476
4477         if (view->sizing_mode == sizing_mode)
4478                 return;
4479
4480         view->sizing_mode = sizing_mode;
4481         gtk_widget_queue_resize (GTK_WIDGET (view));
4482
4483         g_object_notify (G_OBJECT (view), "sizing-mode");
4484 }
4485
4486 EvSizingMode
4487 ev_view_get_sizing_mode (EvView *view)
4488 {
4489         g_return_val_if_fail (EV_IS_VIEW (view), EV_SIZING_FREE);
4490
4491         return view->sizing_mode;
4492 }
4493
4494 gboolean
4495 ev_view_can_zoom_in (EvView *view)
4496 {
4497         return view->scale * ZOOM_IN_FACTOR <= view->max_scale;
4498 }
4499
4500 gboolean
4501 ev_view_can_zoom_out (EvView *view)
4502 {
4503         return view->scale * ZOOM_OUT_FACTOR >= view->min_scale;
4504 }
4505
4506 void
4507 ev_view_zoom_in (EvView *view)
4508 {
4509         g_return_if_fail (view->sizing_mode == EV_SIZING_FREE);
4510
4511         if (view->presentation)
4512                 return;
4513
4514         view->pending_scroll = SCROLL_TO_CENTER;
4515         ev_view_set_zoom (view, ZOOM_IN_FACTOR, TRUE);
4516 }
4517
4518 void
4519 ev_view_zoom_out (EvView *view)
4520 {
4521         g_return_if_fail (view->sizing_mode == EV_SIZING_FREE);
4522
4523         if (view->presentation)
4524                 return;
4525
4526         view->pending_scroll = SCROLL_TO_CENTER;
4527         ev_view_set_zoom (view, ZOOM_OUT_FACTOR, TRUE);
4528 }
4529
4530 void
4531 ev_view_rotate_right (EvView *view)
4532 {
4533         int rotation = view->rotation + 90;
4534
4535         if (rotation >= 360) {
4536                 rotation -= 360;
4537         }
4538
4539         ev_view_set_rotation (view, rotation);
4540 }
4541
4542 void
4543 ev_view_rotate_left (EvView *view)
4544 {
4545         int rotation = view->rotation - 90;
4546
4547         if (rotation < 0) {
4548                 rotation += 360;
4549         }
4550
4551         ev_view_set_rotation (view, rotation);
4552 }
4553
4554 void
4555 ev_view_set_rotation (EvView *view, int rotation)
4556 {
4557         view->rotation = rotation;
4558
4559         if (view->pixbuf_cache) {
4560                 ev_pixbuf_cache_clear (view->pixbuf_cache);
4561                 gtk_widget_queue_resize (GTK_WIDGET (view));
4562         }
4563
4564         if (rotation != 0)
4565                 clear_selection (view);
4566
4567         g_object_notify (G_OBJECT (view), "rotation");
4568 }
4569
4570 int
4571 ev_view_get_rotation (EvView *view)
4572 {
4573         return view->rotation;
4574 }
4575
4576 static double
4577 zoom_for_size_fit_width (int doc_width,
4578                          int doc_height,
4579                          int target_width,
4580                          int target_height,
4581                          int vsb_width)
4582 {
4583         double scale;
4584
4585         scale = (double)target_width / doc_width;
4586
4587         if (doc_height * scale > target_height)
4588                 scale = (double) (target_width - vsb_width) / doc_width;
4589
4590         return scale;
4591 }
4592
4593 static double
4594 zoom_for_size_fit_height (int doc_width,
4595                           int doc_height,
4596                           int target_width,
4597                           int target_height,
4598                           int vsb_height)
4599 {
4600         double scale;
4601
4602         scale = (double)target_height / doc_height;
4603
4604         if (doc_width * scale > target_width)
4605                 scale = (double) (target_height - vsb_height) / doc_height;
4606
4607         return scale;
4608 }
4609
4610 static double
4611 zoom_for_size_best_fit (int doc_width,
4612                         int doc_height,
4613                         int target_width,
4614                         int target_height,
4615                         int vsb_width,
4616                         int hsb_width)
4617 {
4618         double w_scale;
4619         double h_scale;
4620
4621         w_scale = (double)target_width / doc_width;
4622         h_scale = (double)target_height / doc_height;
4623
4624         if (doc_height * w_scale > target_height)
4625                 w_scale = (double) (target_width - vsb_width) / doc_width;
4626         if (doc_width * h_scale > target_width)
4627                 h_scale = (double) (target_height - hsb_width) / doc_height;
4628
4629         return MIN (w_scale, h_scale);
4630 }
4631
4632
4633 static void
4634 ev_view_zoom_for_size_presentation (EvView *view,
4635                                     int     width,
4636                                     int     height)
4637 {
4638         int doc_width, doc_height;
4639         gdouble scale;
4640
4641         ev_page_cache_get_size (view->page_cache,
4642                                 view->current_page,
4643                                 view->rotation,
4644                                 1.0,
4645                                 &doc_width,
4646                                 &doc_height);
4647         scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, 0, 0);
4648         ev_view_set_zoom (view, scale, FALSE);
4649 }
4650
4651 static void
4652 ev_view_zoom_for_size_continuous_and_dual_page (EvView *view,
4653                            int     width,
4654                            int     height,
4655                            int     vsb_width,
4656                            int     hsb_height)
4657 {
4658         int doc_width, doc_height;
4659         GtkBorder border;
4660         gdouble scale;
4661
4662         ev_page_cache_get_max_width (view->page_cache,
4663                                      view->rotation,
4664                                      1.0,
4665                                      &doc_width);
4666         ev_page_cache_get_max_height (view->page_cache,
4667                                       view->rotation,
4668                                       1.0,
4669                                       &doc_height);
4670         compute_border (view, doc_width, doc_height, &border);
4671
4672         doc_width = doc_width * 2;
4673         width -= (2 * (border.left + border.right) + 3 * view->spacing);
4674         height -= (border.top + border.bottom + 2 * view->spacing - 1);
4675
4676         /* FIXME: We really need to calculate the overall height here, not the
4677          * page height.  We assume there's always a vertical scrollbar for
4678          * now.  We need to fix this. */
4679         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
4680                 scale = zoom_for_size_fit_width (doc_width, doc_height, width - vsb_width, height, 0);
4681         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
4682                 scale = zoom_for_size_best_fit (doc_width, doc_height, width - vsb_width, height, 0, hsb_height);
4683         else
4684                 g_assert_not_reached ();
4685
4686         ev_view_set_zoom (view, scale, FALSE);
4687 }
4688
4689 static void
4690 ev_view_zoom_for_size_continuous (EvView *view,
4691                                   int     width,
4692                                   int     height,
4693                                   int     vsb_width,
4694                                   int     hsb_height)
4695 {
4696         int doc_width, doc_height;
4697         GtkBorder border;
4698         gdouble scale;
4699
4700         ev_page_cache_get_max_width (view->page_cache,
4701                                      view->rotation,
4702                                      1.0,
4703                                      &doc_width);
4704         ev_page_cache_get_max_height (view->page_cache,
4705                                       view->rotation,
4706                                       1.0,
4707                                       &doc_height);
4708         compute_border (view, doc_width, doc_height, &border);
4709
4710         width -= (border.left + border.right + 2 * view->spacing);
4711         height -= (border.top + border.bottom + 2 * view->spacing - 1);
4712
4713         /* FIXME: We really need to calculate the overall height here, not the
4714          * page height.  We assume there's always a vertical scrollbar for
4715          * now.  We need to fix this. */
4716         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
4717                 scale = zoom_for_size_fit_width (doc_width, doc_height, width - vsb_width, height, 0);
4718         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
4719                 scale = zoom_for_size_best_fit (doc_width, doc_height, width - vsb_width, height, 0, hsb_height);
4720         else
4721                 g_assert_not_reached ();
4722
4723         ev_view_set_zoom (view, scale, FALSE);
4724 }
4725
4726 static void
4727 ev_view_zoom_for_size_dual_page (EvView *view,
4728                                  int     width,
4729                                  int     height,
4730                                  int     vsb_width,
4731                                  int     hsb_height)
4732 {
4733         GtkBorder border;
4734         gint doc_width, doc_height;
4735         gdouble scale;
4736         gint other_page;
4737
4738         other_page = view->current_page ^ 1;
4739
4740         /* Find the largest of the two. */
4741         ev_page_cache_get_size (view->page_cache,
4742                                 view->current_page,
4743                                 view->rotation,
4744                                 1.0,
4745                                 &doc_width, &doc_height);
4746
4747         if (other_page < ev_page_cache_get_n_pages (view->page_cache)) {
4748                 gint width_2, height_2;
4749                 ev_page_cache_get_size (view->page_cache,
4750                                         other_page,
4751                                         view->rotation,
4752                                         1.0,
4753                                         &width_2, &height_2);
4754                 if (width_2 > doc_width)
4755                         doc_width = width_2;
4756                 if (height_2 > doc_height)
4757                         doc_height = height_2;
4758         }
4759         compute_border (view, doc_width, doc_height, &border);
4760
4761         doc_width = doc_width * 2;
4762         width -= ((border.left + border.right)* 2 + 3 * view->spacing);
4763         height -= (border.top + border.bottom + 2 * view->spacing);
4764
4765         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
4766                 scale = zoom_for_size_fit_width (doc_width, doc_height, width, height, vsb_width);
4767         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
4768                 scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, vsb_width, hsb_height);
4769         else
4770                 g_assert_not_reached ();
4771
4772         ev_view_set_zoom (view, scale, FALSE);
4773 }
4774
4775 static void
4776 ev_view_zoom_for_size_single_page (EvView *view,
4777                                    int     width,
4778                                    int     height,
4779                                    int     vsb_width,
4780                                    int     hsb_height)
4781 {
4782         int doc_width, doc_height;
4783         GtkBorder border;
4784         gdouble scale;
4785
4786         ev_page_cache_get_size (view->page_cache,
4787                                 view->current_page,
4788                                 view->rotation,
4789                                 1.0,
4790                                 &doc_width,
4791                                 &doc_height);
4792         /* Get an approximate border */
4793         compute_border (view, width, height, &border);
4794
4795         width -= (border.left + border.right + 2 * view->spacing);
4796         height -= (border.top + border.bottom + 2 * view->spacing);
4797
4798         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
4799                 scale = zoom_for_size_fit_width (doc_width, doc_height, width, height, vsb_width);
4800         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
4801                 scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, vsb_width, hsb_height);
4802         else
4803                 g_assert_not_reached ();
4804
4805         ev_view_set_zoom (view, scale, FALSE);
4806 }
4807
4808 static void
4809 ev_view_set_zoom_for_size (EvView *view,
4810                            int     width,
4811                            int     height,
4812                            int     vsb_width,
4813                            int     hsb_height)
4814 {
4815         g_return_if_fail (EV_IS_VIEW (view));
4816         g_return_if_fail (view->sizing_mode == EV_SIZING_FIT_WIDTH ||
4817                           view->sizing_mode == EV_SIZING_BEST_FIT);
4818         g_return_if_fail (width >= 0);
4819         g_return_if_fail (height >= 0);
4820
4821         if (view->document == NULL)
4822                 return;
4823
4824         if (view->presentation)
4825                 ev_view_zoom_for_size_presentation (view, width, height);
4826         else if (view->continuous && view->dual_page)
4827                 ev_view_zoom_for_size_continuous_and_dual_page (view, width, height, vsb_width, hsb_height);
4828         else if (view->continuous)
4829                 ev_view_zoom_for_size_continuous (view, width, height, vsb_width, hsb_height);
4830         else if (view->dual_page)
4831                 ev_view_zoom_for_size_dual_page (view, width, height, vsb_width, hsb_height);
4832         else
4833                 ev_view_zoom_for_size_single_page (view, width, height, vsb_width, hsb_height);
4834 }
4835
4836 /*** Find ***/
4837 static void
4838 update_find_status_message (EvView *view, gboolean this_page)
4839 {
4840         char *message;
4841
4842         if (this_page) {
4843                 int results;
4844
4845                 results = ev_document_find_get_n_results
4846                                 (EV_DOCUMENT_FIND (view->document),
4847                                  view->current_page);
4848                 /* TRANS: Sometimes this could be better translated as
4849                    "%d hit(s) on this page".  Therefore this string
4850                    contains plural cases. */
4851                 message = g_strdup_printf (ngettext ("%d found on this page",
4852                                                      "%d found on this page",
4853                                                      results),
4854                                            results);
4855         } else {
4856                 double percent;
4857
4858                 percent = ev_document_find_get_progress
4859                                 (EV_DOCUMENT_FIND (view->document));
4860                 message = g_strdup_printf (_("%3d%% remaining to search"),
4861                                            (int) ((1.0 - percent) * 100));
4862
4863         }
4864         ev_view_set_find_status (view, message);
4865         g_free (message);
4866 }
4867
4868 const char *
4869 ev_view_get_find_status (EvView *view)
4870 {
4871         g_return_val_if_fail (EV_IS_VIEW (view), NULL);
4872
4873         return view->find_status;
4874 }
4875
4876 static void
4877 ev_view_set_find_status (EvView *view, const char *message)
4878 {
4879         g_return_if_fail (EV_IS_VIEW (view));
4880
4881         g_free (view->find_status);
4882         view->find_status = g_strdup (message);
4883         g_object_notify (G_OBJECT (view), "find-status");
4884 }
4885
4886 static void
4887 jump_to_find_result (EvView *view)
4888 {
4889         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
4890         EvRectangle rect;
4891         GdkRectangle view_rect;
4892         int n_results;
4893         int page = view->current_page;
4894
4895         n_results = ev_document_find_get_n_results (find, page);
4896
4897         if (n_results > 0  && view->find_result < n_results) {
4898                 ev_document_find_get_result
4899                         (find, page, view->find_result, &rect);
4900
4901                 doc_rect_to_view_rect (view, page, &rect, &view_rect);
4902                 ensure_rectangle_is_visible (view, &view_rect);
4903         }
4904 }
4905
4906 /**
4907  * jump_to_find_page
4908  * @view: #EvView instance
4909  * @direction: Direction to look
4910  * @shift: Shift from current page
4911  *
4912  * Jumps to the first page that has occurences of searched word.
4913  * Uses a direction where to look and a shift from current page.
4914  *
4915  */
4916 static void
4917 jump_to_find_page (EvView *view, EvViewFindDirection direction, gint shift)
4918 {
4919         int n_pages, i;
4920
4921         n_pages = ev_page_cache_get_n_pages (view->page_cache);
4922
4923         for (i = 0; i < n_pages; i++) {
4924                 int has_results;
4925                 int page;
4926
4927                 if (direction == EV_VIEW_FIND_NEXT)
4928                         page = view->current_page + i;
4929                 else
4930                         page = view->current_page - i;
4931                 page += shift;
4932
4933                 if (page >= n_pages) {
4934                         page = page - n_pages;
4935                 }
4936                 if (page < 0)
4937                         page = page + n_pages;
4938
4939                 has_results = ev_document_find_page_has_results
4940                                 (EV_DOCUMENT_FIND (view->document), page);
4941                 if (has_results == -1) {
4942                         break;
4943                 } else if (has_results == 1) {
4944                         ev_page_cache_set_current_page (view->page_cache, page);
4945                         break;
4946                 }
4947         }
4948 }
4949
4950 gboolean
4951 ev_view_can_find_next (EvView *view)
4952 {
4953         if (EV_IS_DOCUMENT_FIND (view->document)) {
4954                 EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
4955                 int i, n_pages;
4956
4957                 n_pages = ev_page_cache_get_n_pages (view->page_cache);
4958                 for (i = 0; i < n_pages; i++) {
4959                         if (ev_document_find_get_n_results (find, i) > 0) {
4960                                 return TRUE;
4961                         }
4962                 }
4963         }
4964
4965         return FALSE;
4966 }
4967
4968 void
4969 ev_view_find_next (EvView *view)
4970 {
4971         int n_results, n_pages;
4972         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
4973
4974         n_results = ev_document_find_get_n_results (find, view->current_page);
4975
4976         n_pages = ev_page_cache_get_n_pages (view->page_cache);
4977
4978         view->find_result++;
4979
4980         if (view->find_result >= n_results) {
4981
4982                 view->find_result = 0;
4983                 jump_to_find_page (view, EV_VIEW_FIND_NEXT, 1);
4984                 jump_to_find_result (view);
4985         } else {
4986                 jump_to_find_result (view);
4987                 gtk_widget_queue_draw (GTK_WIDGET (view));
4988         }
4989 }
4990
4991 gboolean
4992 ev_view_can_find_previous (EvView *view)
4993 {
4994         if (EV_IS_DOCUMENT_FIND (view->document)) {
4995                 EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
4996                 int i, n_pages;
4997
4998                 n_pages = ev_page_cache_get_n_pages (view->page_cache);
4999                 for (i = n_pages - 1; i >= 0; i--) {
5000                         if (ev_document_find_get_n_results (find, i) > 0) {
5001                                 return TRUE;
5002                         }
5003                 }
5004         }
5005
5006         return FALSE;
5007 }
5008 void
5009 ev_view_find_previous (EvView *view)
5010 {
5011         int n_results, n_pages;
5012         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
5013         EvPageCache *page_cache;
5014
5015         page_cache = ev_page_cache_get (view->document);
5016
5017         n_results = ev_document_find_get_n_results (find, view->current_page);
5018
5019         n_pages = ev_page_cache_get_n_pages (page_cache);
5020
5021         view->find_result--;
5022
5023         if (view->find_result < 0) {
5024
5025                 jump_to_find_page (view, EV_VIEW_FIND_PREV, -1);
5026                 view->find_result = ev_document_find_get_n_results (find, view->current_page) - 1;
5027                 jump_to_find_result (view);
5028         } else {
5029                 jump_to_find_result (view);
5030                 gtk_widget_queue_draw (GTK_WIDGET (view));
5031         }
5032 }
5033
5034 void ev_view_search_changed (EvView *view)
5035 {
5036         /* search string has changed, focus on new search result */
5037         view->jump_to_find_result = TRUE;
5038 }
5039
5040 void ev_view_set_highlight_search (EvView *view, gboolean value)
5041 {
5042         view->highlight_find_results = value;
5043         gtk_widget_queue_draw (GTK_WIDGET (view));
5044 }
5045
5046 /*** Selections ***/
5047
5048 /* compute_new_selection_rect/text calculates the area currently selected by
5049  * view_rect.  each handles a different mode;
5050  */
5051 static GList *
5052 compute_new_selection_rect (EvView       *view,
5053                             GdkPoint     *start,
5054                             GdkPoint     *stop)
5055 {
5056         GdkRectangle view_rect;
5057         int n_pages, i;
5058         GList *list = NULL;
5059
5060         g_assert (view->selection_mode == EV_VIEW_SELECTION_RECTANGLE);
5061
5062         view_rect.x = MIN (start->x, stop->x);
5063         view_rect.y = MIN (start->y, stop->y);
5064         view_rect.width = MAX (start->x, stop->x) - view_rect.x;
5065         view_rect.width = MAX (start->y, stop->y) - view_rect.y;
5066
5067         n_pages = ev_page_cache_get_n_pages (view->page_cache);
5068
5069         for (i = 0; i < n_pages; i++) {
5070                 GdkRectangle page_area;
5071                 GtkBorder border;
5072
5073                 if (get_page_extents (view, i, &page_area, &border)) {
5074                         GdkRectangle overlap;
5075
5076                         if (gdk_rectangle_intersect (&page_area, &view_rect, &overlap)) {
5077                                 EvViewSelection *selection;
5078
5079                                 selection = g_new0 (EvViewSelection, 1);
5080                                 selection->page = i;
5081                                 view_rect_to_doc_rect (view, &overlap, &page_area,
5082                                                        &(selection->rect));
5083
5084                                 list = g_list_append (list, selection);
5085                         }
5086                 }
5087         }
5088
5089         return list;
5090 }
5091
5092 static gboolean
5093 gdk_rectangle_point_in (GdkRectangle *rectangle,
5094                         GdkPoint     *point)
5095 {
5096         return rectangle->x <= point->x &&
5097                 rectangle->y <= point->y &&
5098                 point->x < rectangle->x + rectangle->width &&
5099                 point->y < rectangle->y + rectangle->height;
5100 }
5101
5102 static GList *
5103 compute_new_selection_text (EvView          *view,
5104                             EvSelectionStyle style,
5105                             GdkPoint        *start,
5106                             GdkPoint        *stop)
5107 {
5108         int n_pages, i, first, last;
5109         GList *list = NULL;
5110         EvViewSelection *selection;
5111         gint width, height;
5112         int start_page, end_page;
5113
5114         g_assert (view->selection_mode == EV_VIEW_SELECTION_TEXT);
5115
5116         n_pages = ev_page_cache_get_n_pages (view->page_cache);
5117
5118         /* First figure out the range of pages the selection
5119          * affects. */
5120         first = n_pages;
5121         last = 0;
5122         if (view->continuous) {
5123                 start_page = 0;
5124                 end_page = n_pages;
5125         } else if (view->dual_page) {
5126                 start_page = view->start_page;
5127                 end_page = view->end_page + 1;
5128         } else {
5129                 start_page = view->current_page;
5130                 end_page = view->current_page + 1;
5131         }
5132
5133         for (i = start_page; i < end_page; i++) {
5134                 GdkRectangle page_area;
5135                 GtkBorder border;
5136
5137                 get_page_extents (view, i, &page_area, &border);
5138                 if (gdk_rectangle_point_in (&page_area, start) ||
5139                     gdk_rectangle_point_in (&page_area, stop)) {
5140                         if (first == n_pages)
5141                                 first = i;
5142                         last = i;
5143                 }
5144
5145         }
5146
5147         /* Now create a list of EvViewSelection's for the affected
5148          * pages.  This could be an empty list, a list of just one
5149          * page or a number of pages.*/
5150         for (i = first; i < last + 1; i++) {
5151                 GdkRectangle page_area;
5152                 GtkBorder border;
5153                 GdkPoint *point;
5154
5155                 ev_page_cache_get_size (view->page_cache, i,
5156                                         view->rotation,
5157                                         1.0, &width, &height);
5158
5159                 selection = g_new0 (EvViewSelection, 1);
5160                 selection->page = i;
5161                 selection->style = style;
5162                 selection->rect.x1 = selection->rect.y1 = 0;
5163                 selection->rect.x2 = width;
5164                 selection->rect.y2 = height;
5165
5166                 get_page_extents (view, i, &page_area, &border);
5167
5168                 if (gdk_rectangle_point_in (&page_area, start))
5169                         point = start;
5170                 else
5171                         point = stop;
5172
5173                 if (i == first)
5174                         view_point_to_doc_point (view, point, &page_area,
5175                                                  &selection->rect.x1,
5176                                                  &selection->rect.y1);
5177
5178                 /* If the selection is contained within just one page,
5179                  * make sure we don't write 'start' into both points
5180                  * in selection->rect. */
5181                 if (first == last)
5182                         point = stop;
5183
5184                 if (i == last)
5185                         view_point_to_doc_point (view, point, &page_area,
5186                                                  &selection->rect.x2,
5187                                                  &selection->rect.y2);
5188
5189                 list = g_list_append (list, selection);
5190         }
5191
5192         return list;
5193 }
5194
5195 /* This function takes the newly calculated list, and figures out which regions
5196  * have changed.  It then queues a redraw approporiately.
5197  */
5198 static void
5199 merge_selection_region (EvView *view,
5200                         GList  *new_list)
5201 {
5202         GList *old_list;
5203         GList *new_list_ptr, *old_list_ptr;
5204
5205         /* Update the selection */
5206         old_list = ev_pixbuf_cache_get_selection_list (view->pixbuf_cache);
5207         g_list_foreach (view->selection_info.selections, (GFunc)selection_free, NULL);
5208         view->selection_info.selections = new_list;
5209         ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, new_list);
5210         g_object_notify (G_OBJECT (view), "has-selection");
5211
5212         new_list_ptr = new_list;
5213         old_list_ptr = old_list;
5214
5215         while (new_list_ptr || old_list_ptr) {
5216                 EvViewSelection *old_sel, *new_sel;
5217                 int cur_page;
5218                 GdkRegion *region = NULL;
5219
5220                 new_sel = (new_list_ptr) ? (new_list_ptr->data) : NULL;
5221                 old_sel = (old_list_ptr) ? (old_list_ptr->data) : NULL;
5222
5223                 /* Assume that the lists are in order, and we run through them
5224                  * comparing them, one page at a time.  We come out with the
5225                  * first page we see. */
5226                 if (new_sel && old_sel) {
5227                         if (new_sel->page < old_sel->page) {
5228                                 new_list_ptr = new_list_ptr->next;
5229                                 old_sel = NULL;
5230                         } else if (new_sel->page > old_sel->page) {
5231                                 old_list_ptr = old_list_ptr->next;
5232                                 new_sel = NULL;
5233                         } else {
5234                                 new_list_ptr = new_list_ptr->next;
5235                                 old_list_ptr = old_list_ptr->next;
5236                         }
5237                 } else if (new_sel) {
5238                         new_list_ptr = new_list_ptr->next;
5239                 } else if (old_sel) {
5240                         old_list_ptr = old_list_ptr->next;
5241                 }
5242
5243                 g_assert (new_sel || old_sel);
5244
5245                 /* is the page we're looking at on the screen?*/
5246                 cur_page = new_sel ? new_sel->page : old_sel->page;
5247                 if (cur_page < view->start_page || cur_page > view->end_page)
5248                         continue;
5249
5250                 /* seed the cache with a new page.  We are going to need the new
5251                  * region too. */
5252                 if (new_sel) {
5253                         GdkRegion *tmp_region = NULL;
5254
5255                         ev_pixbuf_cache_get_selection_surface (view->pixbuf_cache,
5256                                                                cur_page,
5257                                                                view->scale,
5258                                                                &tmp_region);
5259
5260                         if (tmp_region) {
5261                                 new_sel->covered_region = gdk_region_copy (tmp_region);
5262                         }
5263                 }
5264
5265                 /* Now we figure out what needs redrawing */
5266                 if (old_sel && new_sel) {
5267                         if (old_sel->covered_region && new_sel->covered_region) {
5268                                 /* We only want to redraw the areas that have
5269                                  * changed, so we xor the old and new regions
5270                                  * and redraw if it's different */
5271                                 region = gdk_region_copy (old_sel->covered_region);
5272                                 gdk_region_xor (region, new_sel->covered_region);
5273                                 if (gdk_region_empty (region)) {
5274                                         gdk_region_destroy (region);
5275                                         region = NULL;
5276                                 }
5277                         } else if (old_sel->covered_region) {
5278                                 region = gdk_region_copy (old_sel->covered_region);
5279                         } else if (new_sel->covered_region) {
5280                                 region = gdk_region_copy (new_sel->covered_region);
5281                         }
5282                 } else if (old_sel && !new_sel) {
5283                         if (old_sel->covered_region && !gdk_region_empty (old_sel->covered_region)) {
5284                                 region = gdk_region_copy (old_sel->covered_region);
5285                         }
5286                 } else if (!old_sel && new_sel) {
5287                         if (new_sel->covered_region && !gdk_region_empty (new_sel->covered_region)) {
5288                                 region = gdk_region_copy (new_sel->covered_region);
5289                         }
5290                 } else {
5291                         g_assert_not_reached ();
5292                 }
5293
5294                 /* Redraw the damaged region! */
5295                 if (region) {
5296                         GdkRectangle page_area;
5297                         GtkBorder border;
5298
5299                         /* I don't know why but the region is smaller
5300                          * than expected. This hack fixes it, I guess
5301                          * 10 pixels more won't hurt
5302                          */
5303                         gdk_region_shrink (region, -5, -5);
5304
5305                         get_page_extents (view, cur_page, &page_area, &border);
5306                         gdk_region_offset (region,
5307                                            page_area.x + border.left - view->scroll_x,
5308                                            page_area.y + border.top - view->scroll_y);
5309                         gdk_window_invalidate_region (view->layout.bin_window, region, TRUE);
5310                         gdk_region_destroy (region);
5311                 }
5312         }
5313
5314         /* Free the old list, now that we're done with it. */
5315         g_list_foreach (old_list, (GFunc) selection_free, NULL);
5316 }
5317
5318 static void
5319 compute_selections (EvView          *view,
5320                     EvSelectionStyle style,
5321                     GdkPoint        *start,
5322                     GdkPoint        *stop)
5323 {
5324         GList *list;
5325
5326         if (view->selection_mode == EV_VIEW_SELECTION_RECTANGLE)
5327                 list = compute_new_selection_rect (view, start, stop);
5328         else
5329                 list = compute_new_selection_text (view, style, start, stop);
5330         merge_selection_region (view, list);
5331 }
5332
5333 /* Free's the selection.  It's up to the caller to queue redraws if needed.
5334  */
5335 static void
5336 selection_free (EvViewSelection *selection)
5337 {
5338         if (selection->covered_region)
5339                 gdk_region_destroy (selection->covered_region);
5340         g_free (selection);
5341 }
5342
5343 static void
5344 clear_selection (EvView *view)
5345 {
5346         g_list_foreach (view->selection_info.selections, (GFunc)selection_free, NULL);
5347         view->selection_info.selections = NULL;
5348         view->selection_info.in_selection = FALSE;
5349         if (view->pixbuf_cache)
5350                 ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, NULL);
5351         g_object_notify (G_OBJECT (view), "has-selection");
5352 }
5353
5354 void
5355 ev_view_select_all (EvView *view)
5356 {
5357         GList *selections = NULL;
5358         int n_pages, i;
5359
5360         /* Disable selection on rotated pages for the 0.4.0 series */
5361         if (view->rotation != 0)
5362                 return;
5363
5364         clear_selection (view);
5365
5366         n_pages = ev_page_cache_get_n_pages (view->page_cache);
5367         for (i = 0; i < n_pages; i++) {
5368                 int width, height;
5369                 EvViewSelection *selection;
5370
5371                 ev_page_cache_get_size (view->page_cache,
5372                                         i,
5373                                         view->rotation,
5374                                         1.0, &width, &height);
5375
5376                 selection = g_new0 (EvViewSelection, 1);
5377                 selection->page = i;
5378                 selection->style = EV_SELECTION_STYLE_GLYPH;
5379                 selection->rect.x1 = selection->rect.y1 = 0;
5380                 selection->rect.x2 = width;
5381                 selection->rect.y2 = height;
5382
5383                 selections = g_list_append (selections, selection);
5384         }
5385
5386         merge_selection_region (view, selections);
5387         gtk_widget_queue_draw (GTK_WIDGET (view));
5388 }
5389
5390 gboolean
5391 ev_view_get_has_selection (EvView *view)
5392 {
5393         return view->selection_info.selections != NULL;
5394 }
5395
5396 static char *
5397 get_selected_text (EvView *view)
5398 {
5399         GString *text;
5400         GList *l;
5401         gchar *normalized_text;
5402         EvRenderContext *rc;
5403
5404         text = g_string_new (NULL);
5405         rc = ev_render_context_new (view->rotation, 1, view->scale);
5406
5407         ev_document_doc_mutex_lock ();
5408
5409         for (l = view->selection_info.selections; l != NULL; l = l->next) {
5410                 EvViewSelection *selection = (EvViewSelection *)l->data;
5411                 gchar *tmp;
5412
5413                 ev_render_context_set_page (rc, selection->page);
5414                 tmp = ev_selection_get_selected_text (EV_SELECTION (view->document),
5415                                                       rc, selection->style,
5416                                                       &(selection->rect));
5417
5418                 g_string_append (text, tmp);
5419                 g_free (tmp);
5420         }
5421
5422         ev_document_doc_mutex_unlock ();
5423
5424         g_object_unref (rc);
5425
5426         normalized_text = g_utf8_normalize (text->str, text->len, G_NORMALIZE_NFKC);
5427         g_string_free (text, TRUE);
5428         return normalized_text;
5429 }
5430
5431 void
5432 ev_view_copy (EvView *ev_view)
5433 {
5434         GtkClipboard *clipboard;
5435         char *text;
5436
5437         if (!EV_IS_SELECTION (ev_view->document))
5438                 return;
5439
5440         text = get_selected_text (ev_view);
5441         clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view),
5442                                               GDK_SELECTION_CLIPBOARD);
5443         gtk_clipboard_set_text (clipboard, text, -1);
5444         g_free (text);
5445 }
5446
5447 static void
5448 ev_view_primary_get_cb (GtkClipboard     *clipboard,
5449                         GtkSelectionData *selection_data,
5450                         guint             info,
5451                         gpointer          data)
5452 {
5453         EvView *ev_view = EV_VIEW (data);
5454         char *text;
5455
5456         if (!EV_IS_SELECTION (ev_view->document))
5457                 return;
5458
5459         text = get_selected_text (ev_view);
5460         if (text) {
5461                 gtk_selection_data_set_text (selection_data, text, -1);
5462                 g_free (text);
5463         }
5464 }
5465
5466 static void
5467 ev_view_primary_clear_cb (GtkClipboard *clipboard,
5468                           gpointer      data)
5469 {
5470         EvView *view = EV_VIEW (data);
5471
5472         clear_selection (view);
5473 }
5474
5475 static void
5476 ev_view_update_primary_selection (EvView *ev_view)
5477 {
5478         GtkClipboard *clipboard;
5479
5480         clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view),
5481                                               GDK_SELECTION_PRIMARY);
5482
5483         if (ev_view->selection_info.selections) {
5484                 if (!gtk_clipboard_set_with_owner (clipboard,
5485                                                    clipboard_targets,
5486                                                    G_N_ELEMENTS (clipboard_targets),
5487                                                    ev_view_primary_get_cb,
5488                                                    ev_view_primary_clear_cb,
5489                                                    G_OBJECT (ev_view)))
5490                         ev_view_primary_clear_cb (clipboard, ev_view);
5491         } else {
5492                 if (gtk_clipboard_get_owner (clipboard) == G_OBJECT (ev_view))
5493                         gtk_clipboard_clear (clipboard);
5494         }
5495 }
5496
5497 /*** Cursor operations ***/
5498
5499 static GdkCursor *
5500 ev_view_create_invisible_cursor(void)
5501 {
5502        GdkBitmap *empty;
5503        GdkColor black = { 0, 0, 0, 0 };
5504        static char bits[] = { 0x00 };
5505
5506        empty = gdk_bitmap_create_from_data (NULL, bits, 1, 1);
5507
5508        return gdk_cursor_new_from_pixmap (empty, empty, &black, &black, 0, 0);
5509 }
5510
5511 static void
5512 ev_view_set_cursor (EvView *view, EvViewCursor new_cursor)
5513 {
5514         GdkCursor *cursor = NULL;
5515         GdkDisplay *display;
5516         GtkWidget *widget;
5517
5518         if (view->cursor == new_cursor) {
5519                 return;
5520         }
5521
5522         widget = gtk_widget_get_toplevel (GTK_WIDGET (view));
5523         display = gtk_widget_get_display (widget);
5524         view->cursor = new_cursor;
5525
5526         switch (new_cursor) {
5527                 case EV_VIEW_CURSOR_NORMAL:
5528                         gdk_window_set_cursor (view->layout.bin_window, NULL);
5529                         break;
5530                 case EV_VIEW_CURSOR_IBEAM:
5531                         cursor = gdk_cursor_new_for_display (display, GDK_XTERM);
5532                         break;
5533                 case EV_VIEW_CURSOR_LINK:
5534                         cursor = gdk_cursor_new_for_display (display, GDK_HAND2);
5535                         break;
5536                 case EV_VIEW_CURSOR_WAIT:
5537                         cursor = gdk_cursor_new_for_display (display, GDK_WATCH);
5538                         break;
5539                 case EV_VIEW_CURSOR_HIDDEN:
5540                         cursor = ev_view_create_invisible_cursor ();
5541                         break;
5542                 case EV_VIEW_CURSOR_DRAG:
5543                         cursor = gdk_cursor_new_for_display (display, GDK_FLEUR);
5544                         break;
5545         }
5546
5547         if (cursor) {
5548                 gdk_window_set_cursor (view->layout.bin_window, cursor);
5549                 gdk_cursor_unref (cursor);
5550                 gdk_flush();
5551         }
5552 }
5553
5554 void
5555 ev_view_hide_cursor (EvView *view)
5556 {
5557        ev_view_set_cursor (view, EV_VIEW_CURSOR_HIDDEN);
5558 }
5559
5560 void
5561 ev_view_show_cursor (EvView *view)
5562 {
5563        ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
5564 }
5565
5566 static void
5567 ev_view_reset_presentation_state (EvView *view)
5568 {
5569         if (!view->presentation ||
5570             view->presentation_state == EV_PRESENTATION_NORMAL)
5571                 return;
5572
5573         view->presentation_state = EV_PRESENTATION_NORMAL;
5574         gdk_window_set_background (view->layout.bin_window,
5575                                    &GTK_WIDGET (view)->style->black);
5576         gtk_widget_queue_draw (GTK_WIDGET (view));
5577 }
5578
5579 gboolean
5580 ev_view_next_page (EvView *view)
5581 {
5582         int page, n_pages;
5583
5584         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
5585
5586         if (!view->page_cache)
5587                 return FALSE;
5588
5589         if (view->presentation &&
5590             (view->presentation_state == EV_PRESENTATION_BLACK ||
5591              view->presentation_state == EV_PRESENTATION_WHITE)) {
5592                 ev_view_reset_presentation_state (view);
5593                 return FALSE;
5594         }
5595
5596         ev_view_presentation_transition_stop (view);
5597         ev_view_reset_presentation_state (view);
5598
5599         page = ev_page_cache_get_current_page (view->page_cache);
5600         n_pages = ev_page_cache_get_n_pages (view->page_cache);
5601
5602         if (view->dual_page && !view->presentation)
5603                 page = page + 2;
5604         else
5605                 page = page + 1;
5606
5607         if (page < n_pages) {
5608                 ev_page_cache_set_current_page (view->page_cache, page);
5609                 return TRUE;
5610         } else if (view->presentation && page == n_pages) {
5611                 view->presentation_state = EV_PRESENTATION_END;
5612                 gtk_widget_queue_draw (GTK_WIDGET (view));
5613                 return TRUE;
5614         } else if (view->dual_page && page == n_pages) {
5615                 ev_page_cache_set_current_page (view->page_cache, page - 1);
5616                 return TRUE;
5617         } else {
5618                 return FALSE;
5619         }
5620 }
5621
5622 gboolean
5623 ev_view_previous_page (EvView *view)
5624 {
5625         int page;
5626
5627         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
5628
5629         if (!view->page_cache)
5630                 return FALSE;
5631
5632         if (view->presentation &&
5633             view->presentation_state == EV_PRESENTATION_END) {
5634                 ev_view_reset_presentation_state (view);
5635                 return TRUE;
5636         }
5637
5638         if (view->presentation &&
5639             (view->presentation_state == EV_PRESENTATION_BLACK ||
5640              view->presentation_state == EV_PRESENTATION_WHITE)) {
5641                 ev_view_reset_presentation_state (view);
5642                 return FALSE;
5643         }
5644
5645         ev_view_reset_presentation_state (view);
5646
5647         page = ev_page_cache_get_current_page (view->page_cache);
5648
5649         if (view->dual_page && !view->presentation)
5650                 page = page - 2;
5651         else
5652                 page = page - 1;
5653
5654         if (page >= 0) {
5655                 ev_page_cache_set_current_page (view->page_cache, page);
5656                 return TRUE;
5657         } else if (ev_view_get_dual_page (view) && page == -1) {
5658                 ev_page_cache_set_current_page (view->page_cache, 0);
5659                 return TRUE;
5660         } else {
5661                 return FALSE;
5662         }
5663 }
5664
5665 /*** Enum description for usage in signal ***/
5666
5667 GType
5668 ev_sizing_mode_get_type (void)
5669 {
5670   static GType etype = 0;
5671   if (etype == 0) {
5672     static const GEnumValue values[] = {
5673       { EV_SIZING_FIT_WIDTH, "EV_SIZING_FIT_WIDTH", "fit-width" },
5674       { EV_SIZING_BEST_FIT, "EV_SIZING_BEST_FIT", "best-fit" },
5675       { EV_SIZING_FREE, "EV_SIZING_FREE", "free" },
5676       { 0, NULL, NULL }
5677     };
5678     etype = g_enum_register_static ("EvSizingMode", values);
5679   }
5680   return etype;
5681 }
5682
5683 GType
5684 ev_scroll_type_get_type (void)
5685 {
5686   static GType etype = 0;
5687   if (etype == 0) {
5688     static const GEnumValue values[] = {
5689       { EV_SCROLL_PAGE_FORWARD, "EV_SCROLL_PAGE_FORWARD", "scroll-page-forward" },
5690       { EV_SCROLL_PAGE_BACKWARD, "EV_SCROLL_PAGE_BACKWARD", "scroll-page-backward" },
5691       { EV_SCROLL_STEP_FORWARD, "EV_SCROLL_STEP_FORWARD", "scroll-step-forward" },
5692       { EV_SCROLL_STEP_FORWARD, "EV_SCROLL_STEP_FORWARD", "scroll-step-forward" },
5693       { EV_SCROLL_STEP_UP, "EV_SCROLL_STEP_UP", "scroll-step-up" },
5694       { EV_SCROLL_STEP_DOWN, "EV_SCROLL_STEP_DOWN", "scroll-step-down" },
5695       { 0, NULL, NULL }
5696     };
5697     etype = g_enum_register_static ("EvScrollType", values);
5698   }
5699   return etype;
5700 }
5701
5702 void
5703 ev_view_update_view_size (EvView *view, GtkScrolledWindow * scrolled_window)
5704 {
5705         int width, height;
5706         GtkRequisition vsb_requisition;
5707         GtkRequisition hsb_requisition;
5708         int scrollbar_spacing;
5709
5710         /* Calculate the width available for the content */
5711         width  = GTK_WIDGET (scrolled_window)->allocation.width;
5712         height = GTK_WIDGET (scrolled_window)->allocation.height;
5713
5714         if (gtk_scrolled_window_get_shadow_type (scrolled_window) == GTK_SHADOW_IN
5715             && view) {
5716                 width -=  2 * GTK_WIDGET(view)->style->xthickness;
5717                 height -= 2 * GTK_WIDGET(view)->style->ythickness;
5718         }
5719
5720         gtk_widget_size_request (scrolled_window->vscrollbar, &vsb_requisition);
5721         gtk_widget_size_request (scrolled_window->hscrollbar, &hsb_requisition);
5722         gtk_widget_style_get (GTK_WIDGET (scrolled_window),
5723                               "scrollbar_spacing",
5724                               &scrollbar_spacing,
5725                               NULL);
5726
5727         if (EV_IS_VIEW(view)) {
5728                 ev_view_set_zoom_for_size (EV_VIEW (view),
5729                                            MAX (1, width),
5730                                            MAX (1, height),
5731                                            vsb_requisition.width + scrollbar_spacing,
5732                                            hsb_requisition.height + scrollbar_spacing);
5733         }
5734 }