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