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-selection.h"
  36 #include "ev-document-links.h"
  37 #include "ev-document-images.h"
  38 #include "ev-document-find.h"
  39 #include "ev-document-transition.h"
  40 #include "ev-document-forms.h"
  41 #include "ev-document-misc.h"
  42 #include "ev-job-queue.h"
  43 #include "ev-page-cache.h"
  44 #include "ev-pixbuf-cache.h"
  45 #include "ev-tooltip.h"
  46 #include "ev-application.h"
  47
  48 #define EV_VIEW_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass), EV_TYPE_VIEW, EvViewClass))
  49 #define EV_IS_VIEW_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), EV_TYPE_VIEW))
  50 #define EV_VIEW_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj), EV_TYPE_VIEW, EvViewClass))
  51
  52
  53 enum {
  54         PROP_0,
  55         PROP_STATUS,
  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                                                               GdkRectangle       *page_area,
 222                                                               GtkBorder          *border,
 223                                                               GdkRectangle       *expose_area,
 224                                                               gboolean           *page_ready);
 225 static void       draw_loading_text                          (EvView             *view,
 226                                                               GdkRectangle       *page_area,
 227                                                               GdkRectangle       *expose_area);
 228
 229 /*** Callbacks ***/
 230 static void       find_changed_cb                            (EvDocument         *document,
 231                                                               int                 page,
 232                                                               EvView             *view);
 233 static void       job_finished_cb                            (EvPixbufCache      *pixbuf_cache,
 234                                                               GdkRegion          *region,
 235                                                               EvView             *view);
 236 static void       page_changed_cb                            (EvPageCache        *page_cache,
 237                                                               int                 new_page,
 238                                                               EvView             *view);
 239 static void       on_adjustment_value_changed                (GtkAdjustment      *adjustment,
 240                                                               EvView             *view);
 241
 242 /*** GObject ***/
 243 static void       ev_view_finalize                           (GObject            *object);
 244 static void       ev_view_destroy                            (GtkObject          *object);
 245 static void       ev_view_set_property                       (GObject            *object,
 246                                                               guint               prop_id,
 247                                                               const GValue       *value,
 248                                                               GParamSpec         *pspec);
 249 static void       ev_view_get_property                       (GObject            *object,
 250                                                               guint               prop_id,
 251                                                               GValue             *value,
 252                                                               GParamSpec         *pspec);
 253 static void       ev_view_class_init                         (EvViewClass        *class);
 254 static void       ev_view_init                               (EvView             *view);
 255
 256 /*** Zoom and sizing ***/
 257 static double   zoom_for_size_fit_width                      (int doc_width,
 258                                                               int doc_height,
 259                                                               int target_width,
 260                                                               int target_height,
 261                                                               int vsb_width);
 262 static double   zoom_for_size_fit_height                     (int doc_width,
 263                                                               int doc_height,
 264                                                               int target_width,
 265                                                               int target_height,
 266                                                               int vsb_height);
 267 static double   zoom_for_size_best_fit                       (int doc_width,
 268                                                               int doc_height,
 269                                                               int target_width,
 270                                                               int target_height,
 271                                                               int vsb_width,
 272                                                               int hsb_width);
 273 static void     ev_view_zoom_for_size_presentation           (EvView *view,
 274                                                               int     width,
 275                                                               int     height);
 276 static void     ev_view_zoom_for_size_continuous_and_dual_page (EvView *view,
 277                                                                 int     width,
 278                                                                 int     height,
 279                                                                 int     vsb_width,
 280                                                                 int     hsb_height);
 281 static void     ev_view_zoom_for_size_continuous               (EvView *view,
 282                                                                 int     width,
 283                                                                 int     height,
 284                                                                 int     vsb_width,
 285                                                                 int     hsb_height);
 286 static void     ev_view_zoom_for_size_dual_page                (EvView *view,
 287                                                                 int     width,
 288                                                                 int     height,
 289                                                                 int     vsb_width,
 290                                                                 int     hsb_height);
 291 static void     ev_view_zoom_for_size_single_page              (EvView *view,
 292                                                                 int     width,
 293                                                                 int     height,
 294                                                                 int     vsb_width,
 295                                                                 int     hsb_height);
 296 /*** Cursors ***/
 297 static GdkCursor* ev_view_create_invisible_cursor            (void);
 298 static void       ev_view_set_cursor                         (EvView             *view,
 299                                                               EvViewCursor        new_cursor);
 300 static void       ev_view_handle_cursor_over_xy              (EvView *view,
 301                                                               gint x,
 302                                                               gint y);
 303
 304 /*** Status messages ***/
 305 static void       ev_view_set_status                         (EvView             *view,
 306                                                               const char         *message);
 307 static void       update_find_status_message                 (EvView             *view,
 308                                                               gboolean            this_page);
 309 static void       ev_view_set_find_status                    (EvView             *view,
 310                                                               const char         *message);
 311 /*** Find ***/
 312 static void       jump_to_find_result                        (EvView             *view);
 313 static void       jump_to_find_page                          (EvView             *view,
 314                                                               EvViewFindDirection direction,
 315                                                               gint                shift);
 316
 317 /*** Selection ***/
 318 static void       compute_selections                         (EvView             *view,
 319                                                               GdkPoint           *start,
 320                                                               GdkPoint           *stop);
 321 static void       clear_selection                            (EvView             *view);
 322 static void       selection_free                             (EvViewSelection    *selection);
 323 static char*      get_selected_text                          (EvView             *ev_view);
 324 static void       ev_view_primary_get_cb                     (GtkClipboard       *clipboard,
 325                                                               GtkSelectionData   *selection_data,
 326                                                               guint               info,
 327                                                               gpointer            data);
 328 static void       ev_view_primary_clear_cb                   (GtkClipboard       *clipboard,
 329                                                               gpointer            data);
 330 static void       ev_view_update_primary_selection           (EvView             *ev_view);
 331
 332 /*** Presentation ***/
 333 static void       ev_view_presentation_transition_start      (EvView             *ev_view);
 334 static void       ev_view_presentation_transition_stop       (EvView             *ev_view);
 335
 336
 337 G_DEFINE_TYPE (EvView, ev_view, GTK_TYPE_LAYOUT)
 338
 339 static void
 340 scroll_to_current_page (EvView *view, GtkOrientation orientation)
 341 {
 342         GdkPoint view_point;
 343
 344         if (view->document == NULL) {
 345                 return;
 346         }
 347
 348         doc_point_to_view_point (view, view->current_page, &view->pending_point, &view_point);
 349
 350         if (orientation == GTK_ORIENTATION_VERTICAL) {
 351                 view->pending_point.y = 0;
 352         } else {
 353                 view->pending_point.x = 0;
 354         }
 355
 356         if (orientation == GTK_ORIENTATION_VERTICAL) {
 357                 if (view->continuous) {
 358                         gtk_adjustment_clamp_page (view->vadjustment,
 359                                                    view_point.y - view->spacing / 2,
 360                                                    view_point.y + view->vadjustment->page_size);
 361                 } else {
 362                         gtk_adjustment_set_value (view->vadjustment,
 363                                                   CLAMP (view_point.y,
 364                                                   view->vadjustment->lower,
 365                                                   view->vadjustment->upper -
 366                                                   view->vadjustment->page_size));
 367                 }
 368         } else {
 369                 if (view->dual_page) {
 370                         gtk_adjustment_clamp_page (view->hadjustment,
 371                                                    view_point.x,
 372                                                    view_point.x + view->hadjustment->page_size);
 373                 } else {
 374                         gtk_adjustment_set_value (view->hadjustment,
 375                                                   CLAMP (view_point.x,
 376                                                   view->hadjustment->lower,
 377                                                   view->hadjustment->upper -
 378                                                   view->hadjustment->page_size));
 379                 }
 380         }
 381 }
 382
 383 static void
 384 view_set_adjustment_values (EvView         *view,
 385                             GtkOrientation  orientation)
 386 {
 387         GtkWidget *widget = GTK_WIDGET (view);
 388         GtkAdjustment *adjustment;
 389         int requisition;
 390         int allocation;
 391
 392         double factor;
 393         gint new_value;
 394
 395         if (orientation == GTK_ORIENTATION_HORIZONTAL)  {
 396                 requisition = widget->requisition.width;
 397                 allocation = widget->allocation.width;
 398                 adjustment = view->hadjustment;
 399         } else {
 400                 requisition = widget->requisition.height;
 401                 allocation = widget->allocation.height;
 402                 adjustment = view->vadjustment;
 403         }
 404
 405         if (!adjustment)
 406                 return;
 407
 408         factor = 1.0;
 409         switch (view->pending_scroll) {
 410                 case SCROLL_TO_KEEP_POSITION:
 411                 case SCROLL_TO_FIND_LOCATION:
 412                         factor = (adjustment->value) / adjustment->upper;
 413                         break;
 414                 case SCROLL_TO_PAGE_POSITION:
 415                         break;
 416                 case SCROLL_TO_CENTER:
 417                         factor = (adjustment->value + adjustment->page_size * 0.5) / adjustment->upper;
 418                         break;
 419         }
 420
 421         adjustment->page_size = allocation;
 422         adjustment->step_increment = allocation * 0.1;
 423         adjustment->page_increment = allocation * 0.9;
 424         adjustment->lower = 0;
 425         adjustment->upper = MAX (allocation, requisition);
 426
 427         /*
 428          * We add 0.5 to the values before to average out our rounding errors.
 429          */
 430         switch (view->pending_scroll) {
 431                 case SCROLL_TO_KEEP_POSITION:
 432                 case SCROLL_TO_FIND_LOCATION:
 433                         new_value = CLAMP (adjustment->upper * factor + 0.5, 0, adjustment->upper - adjustment->page_size);
 434                         gtk_adjustment_set_value (adjustment, (int)new_value);
 435                         break;
 436                 case SCROLL_TO_PAGE_POSITION:
 437                         scroll_to_current_page (view, orientation);
 438                         break;
 439                 case SCROLL_TO_CENTER:
 440                         new_value = CLAMP (adjustment->upper * factor - adjustment->page_size * 0.5 + 0.5,
 441                                            0, adjustment->upper - adjustment->page_size);
 442                         gtk_adjustment_set_value (adjustment, (int)new_value);
 443                         break;
 444         }
 445
 446         gtk_adjustment_changed (adjustment);
 447 }
 448
 449 static void
 450 view_update_range_and_current_page (EvView *view)
 451 {
 452         gint current_page;
 453         gint best_current_page = -1;
 454
 455         /* Presentation trumps all other modes */
 456         if (view->presentation) {
 457                 view->start_page = view->current_page;
 458                 view->end_page = view->current_page;
 459         } else if (view->continuous) {
 460                 GdkRectangle current_area, unused, page_area;
 461                 GtkBorder border;
 462                 gboolean found = FALSE;
 463                 gint area_max = -1, area;
 464                 int i;
 465
 466                 if (!(view->vadjustment && view->hadjustment))
 467                         return;
 468
 469                 current_area.x = view->hadjustment->value;
 470                 current_area.width = view->hadjustment->upper;
 471                 current_area.y = view->vadjustment->value;
 472                 current_area.height = view->vadjustment->page_size;
 473
 474                 for (i = 0; i < ev_page_cache_get_n_pages (view->page_cache); i++) {
 475
 476                         get_page_extents (view, i, &page_area, &border);
 477
 478                         if (gdk_rectangle_intersect (&current_area, &page_area, &unused)) {
 479                                 area = unused.width * unused.height;
 480
 481                                 if (!found) {
 482                                         area_max = area;
 483                                         view->start_page = i;
 484                                         found = TRUE;
 485                                         best_current_page = i;
 486                                 }
 487                                 if (area > area_max) {
 488                                         best_current_page = (area == area_max) ? MIN (i, best_current_page) : i;
 489                                         area_max = area;
 490                                 }
 491
 492                                 view->end_page = i;
 493                         } else if (found) {
 494                                 break;
 495                         }
 496                 }
 497
 498         } else if (view->dual_page) {
 499                 if (view->current_page % 2 == ev_page_cache_get_dual_even_left (view->page_cache)) {
 500                         view->start_page = view->current_page;
 501                         if (view->current_page + 1 < ev_page_cache_get_n_pages (view->page_cache))
 502                                 view->end_page = view->start_page + 1;
 503                         else
 504                                 view->end_page = view->start_page;
 505                 } else {
 506                         if (view->current_page < 1)
 507                                 view->start_page = view->current_page;
 508                         else
 509                                 view->start_page = view->current_page - 1;
 510                         view->end_page = view->current_page;
 511                 }
 512         } else {
 513                 view->start_page = view->current_page;
 514                 view->end_page = view->current_page;
 515         }
 516
 517         best_current_page = MAX (best_current_page, view->start_page);
 518         current_page = ev_page_cache_get_current_page (view->page_cache);
 519
 520         if ((current_page != best_current_page) && (view->pending_scroll == SCROLL_TO_KEEP_POSITION)) {
 521                 view->current_page = best_current_page;
 522                 ev_page_cache_set_current_page (view->page_cache, best_current_page);
 523         }
 524
 525         ev_pixbuf_cache_set_page_range (view->pixbuf_cache,
 526                                         view->start_page,
 527                                         view->end_page,
 528                                         view->rotation,
 529                                         view->scale,
 530                                         view->selection_info.selections);
 531 }
 532
 533 static void
 534 set_scroll_adjustment (EvView *view,
 535                        GtkOrientation  orientation,
 536                        GtkAdjustment  *adjustment)
 537 {
 538         GtkAdjustment **to_set;
 539
 540         if (orientation == GTK_ORIENTATION_HORIZONTAL)
 541                 to_set = &view->hadjustment;
 542         else
 543                 to_set = &view->vadjustment;
 544
 545         if (*to_set != adjustment) {
 546                 if (*to_set) {
 547                         g_signal_handlers_disconnect_by_func (*to_set,
 548                                                               (gpointer) on_adjustment_value_changed,
 549                                                               view);
 550                         g_object_unref (*to_set);
 551                 }
 552
 553                 *to_set = adjustment;
 554                 view_set_adjustment_values (view, orientation);
 555
 556                 if (*to_set) {
 557                         g_object_ref (*to_set);
 558                         g_signal_connect (*to_set, "value_changed",
 559                                           G_CALLBACK (on_adjustment_value_changed), view);
 560                 }
 561         }
 562 }
 563
 564 static void
 565 ev_view_set_scroll_adjustments (GtkLayout      *layout,
 566                                 GtkAdjustment  *hadjustment,
 567                                 GtkAdjustment  *vadjustment)
 568 {
 569         EvView *view = EV_VIEW (layout);
 570
 571         set_scroll_adjustment (view, GTK_ORIENTATION_HORIZONTAL, hadjustment);
 572         set_scroll_adjustment (view, GTK_ORIENTATION_VERTICAL, vadjustment);
 573
 574         on_adjustment_value_changed (NULL, view);
 575 }
 576
 577 static void
 578 add_scroll_binding_keypad (GtkBindingSet  *binding_set,
 579                            guint           keyval,
 580                            GdkModifierType modifiers,
 581                            EvScrollType    scroll,
 582                            gboolean        horizontal)
 583 {
 584   guint keypad_keyval = keyval - GDK_Left + GDK_KP_Left;
 585
 586   gtk_binding_entry_add_signal (binding_set, keyval, modifiers,
 587                                 "binding_activated", 2,
 588                                 EV_TYPE_SCROLL_TYPE, scroll,
 589                                 G_TYPE_BOOLEAN, horizontal);
 590   gtk_binding_entry_add_signal (binding_set, keypad_keyval, modifiers,
 591                                 "binding_activated", 2,
 592                                 EV_TYPE_SCROLL_TYPE, scroll,
 593                                 G_TYPE_BOOLEAN, horizontal);
 594 }
 595
 596 void
 597 ev_view_scroll (EvView        *view,
 598                 EvScrollType   scroll,
 599                 gboolean horizontal)
 600 {
 601         GtkAdjustment *adjustment;
 602         double value, increment;
 603         gboolean first_page = FALSE;
 604         gboolean last_page = FALSE;
 605
 606         view->jump_to_find_result = FALSE;
 607
 608         if (view->presentation || view->sizing_mode == EV_SIZING_BEST_FIT) {
 609                 switch (scroll) {
 610                         case EV_SCROLL_PAGE_BACKWARD:
 611                         case EV_SCROLL_STEP_BACKWARD:
 612                                 ev_view_previous_page (view);
 613                                 break;
 614                         case EV_SCROLL_PAGE_FORWARD:
 615                         case EV_SCROLL_STEP_FORWARD:
 616                                 ev_view_next_page (view);
 617                                 break;
 618                         default:
 619                                 break;
 620                 }
 621                 return;
 622         }
 623
 624         /* Assign values for increment and vertical adjustment */
 625         adjustment = horizontal ? view->hadjustment : view->vadjustment;
 626         increment = adjustment->page_size * 0.75;
 627         value = adjustment->value;
 628
 629         /* Assign boolean for first and last page */
 630         if (view->current_page == 0)
 631                 first_page = TRUE;
 632         if (view->current_page == ev_page_cache_get_n_pages (view->page_cache) - 1)
 633                 last_page = TRUE;
 634
 635         switch (scroll) {
 636                 case EV_SCROLL_PAGE_BACKWARD:
 637                         /* Do not jump backwards if at the first page */
 638                         if (value == (adjustment->lower) && first_page) {
 639                                 /* Do nothing */
 640                                 /* At the top of a page, assign the upper bound limit of previous page */
 641                         } else if (value == (adjustment->lower)) {
 642                                 value = adjustment->upper - adjustment->page_size;
 643                                 ev_view_previous_page (view);
 644                                 /* Jump to the top */
 645                         } else {
 646                                 value = MAX (value - increment, adjustment->lower);
 647                         }
 648                         break;
 649                 case EV_SCROLL_PAGE_FORWARD:
 650                         /* Do not jump forward if at the last page */
 651                         if (value == (adjustment->upper - adjustment->page_size) && last_page) {
 652                                 /* Do nothing */
 653                         /* At the bottom of a page, assign the lower bound limit of next page */
 654                         } else if (value == (adjustment->upper - adjustment->page_size)) {
 655                                 value = 0;
 656                                 ev_view_next_page (view);
 657                         /* Jump to the bottom */
 658                         } else {
 659                                 value = MIN (value + increment, adjustment->upper - adjustment->page_size);
 660                         }
 661                         break;
 662                 case EV_SCROLL_STEP_BACKWARD:
 663                         value -= adjustment->step_increment;
 664                         break;
 665                 case EV_SCROLL_STEP_FORWARD:
 666                         value += adjustment->step_increment;
 667                         break;
 668                 case EV_SCROLL_STEP_DOWN:
 669                         value -= adjustment->step_increment / 10;
 670                         break;
 671                 case EV_SCROLL_STEP_UP:
 672                         value += adjustment->step_increment / 10;
 673                         break;
 674                 default:
 675                         break;
 676         }
 677
 678         value = CLAMP (value, adjustment->lower,
 679                        adjustment->upper - adjustment->page_size);
 680
 681         gtk_adjustment_set_value (adjustment, value);
 682 }
 683
 684 #define MARGIN 5
 685
 686 static void
 687 ensure_rectangle_is_visible (EvView *view, GdkRectangle *rect)
 688 {
 689         GtkWidget *widget = GTK_WIDGET (view);
 690         GtkAdjustment *adjustment;
 691         int value;
 692
 693         view->pending_scroll = SCROLL_TO_FIND_LOCATION;
 694
 695         adjustment = view->vadjustment;
 696
 697         if (rect->y < adjustment->value) {
 698                 value = MAX (adjustment->lower, rect->y - MARGIN);
 699                 gtk_adjustment_set_value (view->vadjustment, value);
 700         } else if (rect->y + rect->height >
 701                    adjustment->value + widget->allocation.height) {
 702                 value = MIN (adjustment->upper, rect->y + rect->height -
 703                              widget->allocation.height + MARGIN);
 704                 gtk_adjustment_set_value (view->vadjustment, value);
 705         }
 706
 707         adjustment = view->hadjustment;
 708
 709         if (rect->x < adjustment->value) {
 710                 value = MAX (adjustment->lower, rect->x - MARGIN);
 711                 gtk_adjustment_set_value (view->hadjustment, value);
 712         } else if (rect->x + rect->height >
 713                    adjustment->value + widget->allocation.width) {
 714                 value = MIN (adjustment->upper, rect->x + rect->width -
 715                              widget->allocation.width + MARGIN);
 716                 gtk_adjustment_set_value (view->hadjustment, value);
 717         }
 718
 719         gtk_widget_queue_resize (GTK_WIDGET (view));
 720 }
 721
 722 /*** Geometry computations ***/
 723
 724 static void
 725 compute_border (EvView *view, int width, int height, GtkBorder *border)
 726 {
 727         if (view->presentation) {
 728                 border->left = 0;
 729                 border->right = 0;
 730                 border->top = 0;
 731                 border->bottom = 0;
 732         } else {
 733                 ev_document_misc_get_page_border_size (width, height, border);
 734         }
 735 }
 736
 737 static void
 738 get_page_y_offset (EvView *view, int page, double zoom, int *y_offset)
 739 {
 740         int max_width, offset;
 741         GtkBorder border;
 742
 743         g_return_if_fail (y_offset != NULL);
 744
 745         ev_page_cache_get_max_width (view->page_cache, view->rotation, zoom, &max_width);
 746
 747         compute_border (view, max_width, max_width, &border);
 748
 749         if (view->dual_page) {
 750                 ev_page_cache_get_height_to_page (view->page_cache, page,
 751                                                   view->rotation, zoom, NULL, &offset);
 752                 offset += ((page + ev_page_cache_get_dual_even_left (view->page_cache)) / 2 + 1) * view->spacing + ((page + ev_page_cache_get_dual_even_left (view->page_cache)) / 2 ) * (border.top + border.bottom);
 753         } else {
 754                 ev_page_cache_get_height_to_page (view->page_cache, page,
 755                                                   view->rotation, zoom, &offset, NULL);
 756                 offset += (page + 1) * view->spacing + page * (border.top + border.bottom);
 757         }
 758
 759         *y_offset = offset;
 760         return;
 761 }
 762
 763 static gboolean
 764 get_page_extents (EvView       *view,
 765                   gint          page,
 766                   GdkRectangle *page_area,
 767                   GtkBorder    *border)
 768 {
 769         GtkWidget *widget;
 770         int width, height;
 771
 772         widget = GTK_WIDGET (view);
 773
 774         /* Get the size of the page */
 775         ev_page_cache_get_size (view->page_cache, page,
 776                                 view->rotation,
 777                                 view->scale,
 778                                 &width, &height);
 779         compute_border (view, width, height, border);
 780         page_area->width = width + border->left + border->right;
 781         page_area->height = height + border->top + border->bottom;
 782
 783         if (view->presentation) {
 784                 page_area->x = (MAX (0, widget->allocation.width - width))/2;
 785                 page_area->y = (MAX (0, widget->allocation.height - height))/2;
 786         } else if (view->continuous) {
 787                 gint max_width;
 788                 gint x, y;
 789
 790                 ev_page_cache_get_max_width (view->page_cache, view->rotation,
 791                                              view->scale, &max_width);
 792                 max_width = max_width + border->left + border->right;
 793                 /* Get the location of the bounding box */
 794                 if (view->dual_page) {
 795                         x = view->spacing + ((page % 2 == ev_page_cache_get_dual_even_left (view->page_cache)) ? 0 : 1) * (max_width + view->spacing);
 796                         x = x + MAX (0, widget->allocation.width - (max_width * 2 + view->spacing * 3)) / 2;
 797                         if (page % 2 == ev_page_cache_get_dual_even_left (view->page_cache))
 798                                 x = x + (max_width - width - border->left - border->right);
 799                 } else {
 800                         x = view->spacing;
 801                         x = x + MAX (0, widget->allocation.width - (width + view->spacing * 2)) / 2;
 802                 }
 803
 804                 get_page_y_offset (view, page, view->scale, &y);
 805
 806                 page_area->x = x;
 807                 page_area->y = y;
 808         } else {
 809                 gint x, y;
 810                 if (view->dual_page) {
 811                         gint width_2, height_2;
 812                         gint max_width = width;
 813                         gint max_height = height;
 814                         GtkBorder overall_border;
 815                         gint other_page;
 816
 817                         other_page = (page % 2 == ev_page_cache_get_dual_even_left (view->page_cache)) ? page + 1: page - 1;
 818
 819                         /* First, we get the bounding box of the two pages */
 820                         if (other_page < ev_page_cache_get_n_pages (view->page_cache)
 821                             && (0 <= other_page)) {
 822                                 ev_page_cache_get_size (view->page_cache,
 823                                                         other_page,
 824                                                         view->rotation,
 825                                                         view->scale,
 826                                                         &width_2, &height_2);
 827                                 if (width_2 > width)
 828                                         max_width = width_2;
 829                                 if (height_2 > height)
 830                                         max_height = height_2;
 831                         }
 832                         compute_border (view, max_width, max_height, &overall_border);
 833
 834                         /* Find the offsets */
 835                         x = view->spacing;
 836                         y = view->spacing;
 837
 838                         /* Adjust for being the left or right page */
 839                         if (page % 2 == ev_page_cache_get_dual_even_left (view->page_cache))
 840                                 x = x + max_width - width;
 841                         else
 842                                 x = x + (max_width + overall_border.left + overall_border.right) + view->spacing;
 843
 844                         y = y + (max_height - height)/2;
 845
 846                         /* Adjust for extra allocation */
 847                         x = x + MAX (0, widget->allocation.width -
 848                                      ((max_width + overall_border.left + overall_border.right) * 2 + view->spacing * 3))/2;
 849                         y = y + MAX (0, widget->allocation.height - (height + view->spacing * 2))/2;
 850                 } else {
 851                         x = view->spacing;
 852                         y = view->spacing;
 853
 854                         /* Adjust for extra allocation */
 855                         x = x + MAX (0, widget->allocation.width - (width + border->left + border->right + view->spacing * 2))/2;
 856                         y = y + MAX (0, widget->allocation.height - (height + border->top + border->bottom +  view->spacing * 2))/2;
 857                 }
 858
 859                 page_area->x = x;
 860                 page_area->y = y;
 861         }
 862
 863         return TRUE;
 864 }
 865
 866 static void
 867 view_point_to_doc_point (EvView *view,
 868                          GdkPoint *view_point,
 869                          GdkRectangle *page_area,
 870                          double  *doc_point_x,
 871                          double  *doc_point_y)
 872 {
 873         *doc_point_x = (double) (view_point->x - page_area->x) / view->scale;
 874         *doc_point_y = (double) (view_point->y - page_area->y) / view->scale;
 875 }
 876
 877 static void
 878 view_rect_to_doc_rect (EvView *view,
 879                        GdkRectangle *view_rect,
 880                        GdkRectangle *page_area,
 881                        EvRectangle  *doc_rect)
 882 {
 883         doc_rect->x1 = (double) (view_rect->x - page_area->x) / view->scale;
 884         doc_rect->y1 = (double) (view_rect->y - page_area->y) / view->scale;
 885         doc_rect->x2 = doc_rect->x1 + (double) view_rect->width / view->scale;
 886         doc_rect->y2 = doc_rect->y1 + (double) view_rect->height / view->scale;
 887 }
 888
 889 static gboolean
 890 doc_point_to_view_point (EvView       *view,
 891                          int           page,
 892                          EvPoint      *doc_point,
 893                          GdkPoint     *view_point)
 894 {
 895         GdkRectangle page_area;
 896         GtkBorder border;
 897         double x, y, view_x, view_y;
 898         int width, height;
 899
 900         ev_page_cache_get_size (view->page_cache, page,
 901                                 view->rotation,
 902                                 1.0,
 903                                 &width, &height);
 904
 905         if (view->rotation == 0) {
 906                 x = doc_point->x;
 907                 y = doc_point->y;
 908         } else if (view->rotation == 90) {
 909                 x = width - doc_point->y;
 910                 y = doc_point->x;
 911         } else if (view->rotation == 180) {
 912                 x = width - doc_point->x;
 913                 y = height - doc_point->y;
 914         } else if (view->rotation == 270) {
 915                 x = doc_point->y;
 916                 y = height - doc_point->x;
 917         } else {
 918                 g_assert_not_reached ();
 919         }
 920
 921         get_page_extents (view, page, &page_area, &border);
 922
 923         view_x = x * view->scale;
 924         view_y = y * view->scale;
 925         view_point->x = view_x + page_area.x;
 926         view_point->y = view_y + page_area.y;
 927
 928         return (view_x > 0 && view_x <= page_area.width &&
 929                 view_y > 0 && view_y <= page_area.height);
 930 }
 931
 932 static void
 933 doc_rect_to_view_rect (EvView       *view,
 934                        int           page,
 935                        EvRectangle  *doc_rect,
 936                        GdkRectangle *view_rect)
 937 {
 938         GdkRectangle page_area;
 939         GtkBorder border;
 940         double x, y, w, h;
 941         int width, height;
 942
 943         ev_page_cache_get_size (view->page_cache, page,
 944                                 view->rotation,
 945                                 1.0,
 946                                 &width, &height);
 947
 948         if (view->rotation == 0) {
 949                 x = doc_rect->x1;
 950                 y = doc_rect->y1;
 951                 w = doc_rect->x2 - doc_rect->x1;
 952                 h = doc_rect->y2 - doc_rect->y1;
 953         } else if (view->rotation == 90) {
 954                 x = width - doc_rect->y2;
 955                 y = doc_rect->x1;
 956                 w = doc_rect->y2 - doc_rect->y1;
 957                 h = doc_rect->x2 - doc_rect->x1;
 958         } else if (view->rotation == 180) {
 959                 x = width - doc_rect->x2;
 960                 y = height - doc_rect->y2;
 961                 w = doc_rect->x2 - doc_rect->x1;
 962                 h = doc_rect->y2 - doc_rect->y1;
 963         } else if (view->rotation == 270) {
 964                 x = doc_rect->y1;
 965                 y = height - doc_rect->x2;
 966                 w = doc_rect->y2 - doc_rect->y1;
 967                 h = doc_rect->x2 - doc_rect->x1;
 968         } else {
 969                 g_assert_not_reached ();
 970         }
 971
 972         get_page_extents (view, page, &page_area, &border);
 973
 974         view_rect->x = x * view->scale + page_area.x;
 975         view_rect->y = y * view->scale + page_area.y;
 976         view_rect->width = w * view->scale;
 977         view_rect->height = h * view->scale;
 978 }
 979
 980 static void
 981 find_page_at_location (EvView  *view,
 982                        gdouble  x,
 983                        gdouble  y,
 984                        gint    *page,
 985                        gint    *x_offset,
 986                        gint    *y_offset)
 987 {
 988         int i;
 989
 990         if (view->document == NULL)
 991                 return;
 992
 993         g_assert (page);
 994         g_assert (x_offset);
 995         g_assert (y_offset);
 996
 997         for (i = view->start_page; i <= view->end_page; i++) {
 998                 GdkRectangle page_area;
 999                 GtkBorder border;
1000
1001                 if (! get_page_extents (view, i, &page_area, &border))
1002                         continue;
1003
1004                 if ((x >= page_area.x + border.left) &&
1005                     (x < page_area.x + page_area.width - border.right) &&
1006                     (y >= page_area.y + border.top) &&
1007                     (y < page_area.y + page_area.height - border.bottom)) {
1008                         *page = i;
1009                         *x_offset = x - (page_area.x + border.left);
1010                         *y_offset = y - (page_area.y + border.top);
1011                         return;
1012                 }
1013         }
1014
1015         *page = -1;
1016 }
1017
1018 static gboolean
1019 location_in_text (EvView  *view,
1020                   gdouble  x,
1021                   gdouble  y)
1022 {
1023         GdkRegion *region;
1024         gint page = -1;
1025         gint x_offset = 0, y_offset = 0;
1026
1027         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1028
1029         if (page == -1)
1030                 return FALSE;
1031
1032         region = ev_pixbuf_cache_get_text_mapping (view->pixbuf_cache, page);
1033
1034         if (region)
1035                 return gdk_region_point_in (region, x_offset / view->scale, y_offset / view->scale);
1036         else
1037                 return FALSE;
1038 }
1039
1040 static int
1041 ev_view_get_width (EvView *view)
1042 {
1043         return GTK_WIDGET (view)->allocation.width;
1044 }
1045
1046 static int
1047 ev_view_get_height (EvView *view)
1048 {
1049         return GTK_WIDGET (view)->allocation.height;
1050 }
1051
1052 static gboolean
1053 location_in_selected_text (EvView  *view,
1054                            gdouble  x,
1055                            gdouble  y)
1056 {
1057         gint page = -1;
1058         gint x_offset = 0, y_offset = 0;
1059         EvViewSelection *selection;
1060         GList *l = NULL;
1061
1062         for (l = view->selection_info.selections; l != NULL; l = l->next) {
1063                 selection = (EvViewSelection *)l->data;
1064
1065                 find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1066
1067                 if (page != selection->page)
1068                         continue;
1069
1070                 if (selection->covered_region &&
1071                     gdk_region_point_in (selection->covered_region, x_offset, y_offset))
1072                         return TRUE;
1073         }
1074
1075         return FALSE;
1076 }
1077
1078 static gboolean
1079 get_doc_point_from_offset (EvView *view,
1080                            gint    page,
1081                            gint    x_offset,
1082                            gint    y_offset,
1083                            gint   *x_new,
1084                            gint   *y_new)
1085 {
1086         int width, height;
1087         double x, y;
1088
1089         ev_page_cache_get_size (view->page_cache, page,
1090                                 view->rotation,
1091                                 1.0,
1092                                 &width, &height);
1093
1094         x_offset = x_offset / view->scale;
1095         y_offset = y_offset / view->scale;
1096
1097         if (view->rotation == 0) {
1098                 x = x_offset;
1099                 y = y_offset;
1100         } else if (view->rotation == 90) {
1101                 x = y_offset;
1102                 y = width - x_offset;
1103         } else if (view->rotation == 180) {
1104                 x = width - x_offset;
1105                 y = height - y_offset;
1106         } else if (view->rotation == 270) {
1107                 x = height - y_offset;
1108                 y = x_offset;
1109         } else {
1110                 g_assert_not_reached ();
1111         }
1112
1113         *x_new = x;
1114         *y_new = y;
1115
1116         return TRUE;
1117 }
1118
1119 /*** Hyperref ***/
1120 static EvLink *
1121 ev_view_get_link_at_location (EvView  *view,
1122                               gdouble  x,
1123                               gdouble  y)
1124 {
1125         gint page = -1;
1126         gint x_offset = 0, y_offset = 0;
1127         gint x_new = 0, y_new = 0;
1128         GList *link_mapping;
1129
1130         if (!EV_IS_DOCUMENT_LINKS (view->document))
1131                 return NULL;
1132
1133         x += view->scroll_x;
1134         y += view->scroll_y;
1135
1136         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1137
1138         if (page == -1)
1139                 return NULL;
1140
1141
1142         if (get_doc_point_from_offset (view, page, x_offset,
1143                                        y_offset, &x_new, &y_new) == FALSE)
1144                 return NULL;
1145
1146         link_mapping = ev_pixbuf_cache_get_link_mapping (view->pixbuf_cache, page);
1147
1148         if (link_mapping)
1149                 return ev_link_mapping_find (link_mapping, x_new, y_new);
1150         else
1151                 return NULL;
1152 }
1153
1154 static void
1155 goto_fitr_dest (EvView *view, EvLinkDest *dest)
1156 {
1157         EvPoint doc_point;
1158         double zoom;
1159
1160         zoom = zoom_for_size_best_fit (ev_link_dest_get_right (dest) - ev_link_dest_get_left (dest),
1161                                        ev_link_dest_get_bottom (dest) - ev_link_dest_get_top (dest),
1162                                        ev_view_get_width (view),
1163                                        ev_view_get_height (view), 0, 0);
1164
1165         ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1166         ev_view_set_zoom (view, zoom, FALSE);
1167
1168         doc_point.x = ev_link_dest_get_left (dest);
1169         doc_point.y = ev_link_dest_get_top (dest);
1170
1171         view->current_page = ev_link_dest_get_page (dest);
1172         view->pending_point = doc_point;
1173         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1174
1175         gtk_widget_queue_resize (GTK_WIDGET (view));
1176 }
1177
1178 static void
1179 goto_fitv_dest (EvView *view, EvLinkDest *dest)
1180 {
1181         EvPoint doc_point;
1182         int doc_width, doc_height, page;
1183         double zoom;
1184
1185         page = ev_link_dest_get_page (dest);
1186         ev_page_cache_get_size (view->page_cache, page, 0, 1.0, &doc_width, &doc_height);
1187
1188         doc_point.x = ev_link_dest_get_left (dest);
1189         doc_point.y = 0;
1190
1191         zoom = zoom_for_size_fit_height (doc_width - doc_point.x , doc_height,
1192                                          ev_view_get_width (view),
1193                                          ev_view_get_height (view), 0);
1194
1195         ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1196         ev_view_set_zoom (view, zoom, FALSE);
1197
1198         view->current_page = page;
1199         view->pending_point = doc_point;
1200         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1201
1202         gtk_widget_queue_resize (GTK_WIDGET (view));
1203 }
1204
1205 static void
1206 goto_fith_dest (EvView *view, EvLinkDest *dest)
1207 {
1208         EvPoint doc_point;
1209         int doc_width, doc_height, page;
1210         double zoom;
1211
1212         page = ev_link_dest_get_page (dest);
1213         ev_page_cache_get_size (view->page_cache, page, 0, 1.0, &doc_width, &doc_height);
1214
1215         doc_point.x = 0;
1216         doc_point.y = ev_link_dest_get_top (dest);
1217
1218         zoom = zoom_for_size_fit_width (doc_width, ev_link_dest_get_top (dest),
1219                                         ev_view_get_width (view),
1220                                         ev_view_get_height (view), 0);
1221
1222         ev_view_set_sizing_mode (view, EV_SIZING_FIT_WIDTH);
1223         ev_view_set_zoom (view, zoom, FALSE);
1224
1225         view->current_page = page;
1226         view->pending_point = doc_point;
1227         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1228
1229         gtk_widget_queue_resize (GTK_WIDGET (view));
1230 }
1231
1232 static void
1233 goto_fit_dest (EvView *view, EvLinkDest *dest)
1234 {
1235         double zoom;
1236         int doc_width, doc_height;
1237         int page;
1238
1239         page = ev_link_dest_get_page (dest);
1240         ev_page_cache_get_size (view->page_cache, page, 0, 1.0, &doc_width, &doc_height);
1241
1242         zoom = zoom_for_size_best_fit (doc_width, doc_height, ev_view_get_width (view),
1243                                        ev_view_get_height (view), 0, 0);
1244
1245         ev_view_set_sizing_mode (view, EV_SIZING_BEST_FIT);
1246         ev_view_set_zoom (view, zoom, FALSE);
1247
1248         view->current_page = page;
1249         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1250
1251         gtk_widget_queue_resize (GTK_WIDGET (view));
1252 }
1253
1254 static void
1255 goto_xyz_dest (EvView *view, EvLinkDest *dest)
1256 {
1257         EvPoint doc_point;
1258         gint page;
1259         double zoom;
1260
1261         zoom = ev_link_dest_get_zoom (dest);
1262         page = ev_link_dest_get_page (dest);
1263
1264         if (zoom > 1) {
1265                 ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1266                 ev_view_set_zoom (view, zoom, FALSE);
1267         }
1268
1269         doc_point.x = ev_link_dest_get_left (dest);
1270         doc_point.y = ev_link_dest_get_top (dest);
1271
1272         view->current_page = page;
1273         view->pending_point = doc_point;
1274         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1275
1276         gtk_widget_queue_resize (GTK_WIDGET (view));
1277 }
1278
1279 static void
1280 goto_dest (EvView *view, EvLinkDest *dest)
1281 {
1282         EvLinkDestType type;
1283         int page, n_pages, current_page;
1284
1285         page = ev_link_dest_get_page (dest);
1286         n_pages = ev_page_cache_get_n_pages (view->page_cache);
1287
1288         if (page < 0 || page >= n_pages)
1289                 return;
1290
1291         current_page = view->current_page;
1292
1293         type = ev_link_dest_get_dest_type (dest);
1294
1295         switch (type) {
1296                 case EV_LINK_DEST_TYPE_PAGE:
1297                         ev_page_cache_set_current_page (view->page_cache, page);
1298                         break;
1299                 case EV_LINK_DEST_TYPE_FIT:
1300                         goto_fit_dest (view, dest);
1301                         break;
1302                 case EV_LINK_DEST_TYPE_FITH:
1303                         goto_fith_dest (view, dest);
1304                         break;
1305                 case EV_LINK_DEST_TYPE_FITV:
1306                         goto_fitv_dest (view, dest);
1307                         break;
1308                 case EV_LINK_DEST_TYPE_FITR:
1309                         goto_fitr_dest (view, dest);
1310                         break;
1311                 case EV_LINK_DEST_TYPE_XYZ:
1312                         goto_xyz_dest (view, dest);
1313                         break;
1314                 case EV_LINK_DEST_TYPE_PAGE_LABEL:
1315                         ev_page_cache_set_page_label (view->page_cache, ev_link_dest_get_page_label (dest));
1316                         break;
1317                 default:
1318                         g_assert_not_reached ();
1319         }
1320
1321         if (current_page != view->current_page)
1322                 ev_page_cache_set_current_page (view->page_cache,
1323                                                 view->current_page);
1324 }
1325
1326 static void
1327 ev_view_goto_dest (EvView *view, EvLinkDest *dest)
1328 {
1329         EvLinkDestType type;
1330
1331         type = ev_link_dest_get_dest_type (dest);
1332
1333         if (type == EV_LINK_DEST_TYPE_NAMED) {
1334                 EvLinkDest  *dest2;
1335                 const gchar *named_dest;
1336
1337                 named_dest = ev_link_dest_get_named_dest (dest);
1338                 dest2 = ev_document_links_find_link_dest (EV_DOCUMENT_LINKS (view->document),
1339                                                           named_dest);
1340                 if (dest2) {
1341                         goto_dest (view, dest2);
1342                         g_object_unref (dest2);
1343                 }
1344
1345                 return;
1346         }
1347
1348         goto_dest (view, dest);
1349 }
1350
1351 void
1352 ev_view_handle_link (EvView *view, EvLink *link)
1353 {
1354         EvLinkAction    *action = NULL;
1355         EvLinkActionType type;
1356
1357         action = ev_link_get_action (link);
1358         if (!action)
1359                 return;
1360
1361         type = ev_link_action_get_action_type (action);
1362
1363         switch (type) {
1364                 case EV_LINK_ACTION_TYPE_GOTO_DEST: {
1365                         EvLinkDest *dest;
1366
1367                         g_signal_emit (view, signals[SIGNAL_HANDLE_LINK], 0, link);
1368
1369                         dest = ev_link_action_get_dest (action);
1370                         ev_view_goto_dest (view, dest);
1371                 }
1372                         break;
1373                 case EV_LINK_ACTION_TYPE_GOTO_REMOTE:
1374                 case EV_LINK_ACTION_TYPE_EXTERNAL_URI:
1375                 case EV_LINK_ACTION_TYPE_LAUNCH:
1376                 case EV_LINK_ACTION_TYPE_NAMED:
1377                         g_signal_emit (view, signals[SIGNAL_EXTERNAL_LINK], 0, action);
1378                         break;
1379         }
1380 }
1381
1382 gchar *
1383 ev_view_page_label_from_dest (EvView *view, EvLinkDest *dest)
1384 {
1385         EvLinkDestType type;
1386         gchar *msg = NULL;
1387
1388         type = ev_link_dest_get_dest_type (dest);
1389
1390         switch (type) {
1391                 case EV_LINK_DEST_TYPE_NAMED: {
1392                         EvLinkDest  *dest2;
1393                         const gchar *named_dest;
1394
1395                         named_dest = ev_link_dest_get_named_dest (dest);
1396                         dest2 = ev_document_links_find_link_dest (EV_DOCUMENT_LINKS (view->document),
1397                                                                   named_dest);
1398                         if (dest2) {
1399                                 msg = ev_page_cache_get_page_label (view->page_cache,
1400                                                                     ev_link_dest_get_page (dest2));
1401                                 g_object_unref (dest2);
1402                         }
1403                 }
1404
1405                         break;
1406                 case EV_LINK_DEST_TYPE_PAGE_LABEL: {
1407                         msg = g_strdup (ev_link_dest_get_page_label (dest));
1408                 }
1409                         break;
1410                 default:
1411                         msg = ev_page_cache_get_page_label (view->page_cache,
1412                                                             ev_link_dest_get_page (dest));
1413         }
1414
1415         return msg;
1416 }
1417
1418 static char *
1419 tip_from_action_named (EvLinkAction *action)
1420 {
1421         const gchar *name = ev_link_action_get_name (action);
1422
1423         if (g_ascii_strcasecmp (name, "FirstPage") == 0) {
1424                 return g_strdup (_("Go to first page"));
1425         } else if (g_ascii_strcasecmp (name, "PrevPage") == 0) {
1426                 return g_strdup (_("Go to previous page"));
1427         } else if (g_ascii_strcasecmp (name, "NextPage") == 0) {
1428                 return g_strdup (_("Go to next page"));
1429         } else if (g_ascii_strcasecmp (name, "LastPage") == 0) {
1430                 return g_strdup (_("Go to last page"));
1431         } else if (g_ascii_strcasecmp (name, "GoToPage") == 0) {
1432                 return g_strdup (_("Go to page"));
1433         } else if (g_ascii_strcasecmp (name, "Find") == 0) {
1434                 return g_strdup (_("Find"));
1435         }
1436
1437         return NULL;
1438 }
1439
1440 static char *
1441 tip_from_link (EvView *view, EvLink *link)
1442 {
1443         EvLinkAction *action;
1444         EvLinkActionType type;
1445         char *msg = NULL;
1446         char *page_label;
1447         const char *title;
1448
1449         action = ev_link_get_action (link);
1450         title = ev_link_get_title (link);
1451
1452         if (!action)
1453                 return title ? g_strdup (title) : NULL;
1454
1455         type = ev_link_action_get_action_type (action);
1456
1457         switch (type) {
1458                 case EV_LINK_ACTION_TYPE_GOTO_DEST:
1459                         page_label = ev_view_page_label_from_dest (view,
1460                                                                    ev_link_action_get_dest (action));
1461                         msg = g_strdup_printf (_("Go to page %s"), page_label);
1462                         g_free (page_label);
1463                         break;
1464                 case EV_LINK_ACTION_TYPE_GOTO_REMOTE:
1465                         if (title) {
1466                                 msg = g_strdup_printf (_("Go to %s on file “%s”"), title,
1467                                                        ev_link_action_get_filename (action));
1468                         } else {
1469                                 msg = g_strdup_printf (_("Go to file “%s”"),
1470                                                        ev_link_action_get_filename (action));
1471                         }
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
1498         link = ev_view_get_link_at_location (view, x, y);
1499
1500         if (view->link_tooltip == NULL) {
1501                 view->link_tooltip = ev_tooltip_new (GTK_WIDGET (view));
1502         }
1503
1504         if (view->hovered_link != link) {
1505                 view->hovered_link = link;
1506                 ev_tooltip_deactivate (EV_TOOLTIP (view->link_tooltip));
1507         }
1508
1509         if (link) {
1510                 char *msg = tip_from_link (view, link);
1511
1512                 if (msg && g_utf8_validate (msg, -1, NULL)) {
1513                         EvTooltip *tooltip = EV_TOOLTIP (view->link_tooltip);
1514
1515                         ev_tooltip_set_position (tooltip, x, y);
1516                         ev_tooltip_set_text (tooltip, msg);
1517                         ev_tooltip_activate (tooltip);
1518                 }
1519                 g_free (msg);
1520
1521                 ev_view_set_cursor (view, EV_VIEW_CURSOR_LINK);
1522         } else if (location_in_text (view, x + view->scroll_x, y + view->scroll_y)) {
1523                 ev_view_set_cursor (view, EV_VIEW_CURSOR_IBEAM);
1524         } else if (ev_view_get_form_field_at_location (view, x, y)) {
1525                 ev_view_set_cursor (view, EV_VIEW_CURSOR_LINK);
1526         } else {
1527                 ev_view_set_status (view, NULL);
1528                 if (view->cursor == EV_VIEW_CURSOR_LINK ||
1529                     view->cursor == EV_VIEW_CURSOR_IBEAM)
1530                         ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
1531         }
1532 }
1533
1534 /*** Images ***/
1535 static EvImage *
1536 ev_view_get_image_at_location (EvView  *view,
1537                                gdouble  x,
1538                                gdouble  y)
1539 {
1540         gint page = -1;
1541         gint x_offset = 0, y_offset = 0;
1542         gint x_new = 0, y_new = 0;
1543         GList *image_mapping;
1544
1545         if (!EV_IS_DOCUMENT_IMAGES (view->document))
1546                 return NULL;
1547
1548         x += view->scroll_x;
1549         y += view->scroll_y;
1550
1551         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1552
1553         if (page == -1)
1554                 return NULL;
1555
1556         if (get_doc_point_from_offset (view, page, x_offset,
1557                                        y_offset, &x_new, &y_new) == FALSE)
1558                 return NULL;
1559
1560         image_mapping = ev_pixbuf_cache_get_image_mapping (view->pixbuf_cache, page);
1561
1562         if (image_mapping)
1563                 return ev_image_mapping_find (image_mapping, x_new, y_new);
1564         else
1565                 return NULL;
1566 }
1567
1568 /*** Forms ***/
1569 static EvFormField *
1570 ev_view_get_form_field_at_location (EvView  *view,
1571                                     gdouble  x,
1572                                     gdouble  y)
1573 {
1574         gint page = -1;
1575         gint x_offset = 0, y_offset = 0;
1576         gint x_new = 0, y_new = 0;
1577         GList *forms_mapping;
1578
1579         if (!EV_IS_DOCUMENT_FORMS (view->document))
1580                 return NULL;
1581
1582         x += view->scroll_x;
1583         y += view->scroll_y;
1584
1585         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1586
1587         if (page == -1)
1588                 return NULL;
1589
1590         if (get_doc_point_from_offset (view, page, x_offset,
1591                                        y_offset, &x_new, &y_new) == FALSE)
1592                 return NULL;
1593
1594         forms_mapping = ev_pixbuf_cache_get_form_field_mapping (view->pixbuf_cache, page);
1595
1596         if (forms_mapping)
1597                 return ev_form_field_mapping_find (forms_mapping, x_new, y_new);
1598         else
1599                 return NULL;
1600 }
1601
1602 static GdkRegion *
1603 ev_view_form_field_get_region (EvView      *view,
1604                                EvFormField *field)
1605 {
1606         EvRectangle  field_area;
1607         GdkRectangle view_area;
1608         GList       *forms_mapping;
1609
1610         forms_mapping = ev_pixbuf_cache_get_form_field_mapping (view->pixbuf_cache,
1611                                                                 field->page);
1612         ev_form_field_mapping_get_area (forms_mapping, field, &field_area);
1613         doc_rect_to_view_rect (view, field->page, &field_area, &view_area);
1614         view_area.x -= view->scroll_x;
1615         view_area.y -= view->scroll_y;
1616
1617         return gdk_region_rectangle (&view_area);
1618 }
1619
1620 static gboolean
1621 ev_view_forms_remove_widgets (EvView *view)
1622 {
1623         ev_view_remove_all (view);
1624
1625         return FALSE;
1626 }
1627
1628 static void
1629 ev_view_form_field_destroy (GtkWidget *widget,
1630                             EvView    *view)
1631 {
1632         g_idle_add ((GSourceFunc)ev_view_forms_remove_widgets, view);
1633 }
1634
1635 static GtkWidget *
1636 ev_view_form_field_button_create_widget (EvView      *view,
1637                                          EvFormField *field)
1638 {
1639         EvFormFieldButton *field_button = EV_FORM_FIELD_BUTTON (field);
1640         GdkRegion         *field_region;
1641
1642         switch (field_button->type) {
1643                 case EV_FORM_FIELD_BUTTON_PUSH:
1644                         return NULL;
1645                 case EV_FORM_FIELD_BUTTON_CHECK: {
1646                         gboolean state;
1647
1648                         field_region = ev_view_form_field_get_region (view, field);
1649
1650                         state = ev_document_forms_form_field_button_get_state (EV_DOCUMENT_FORMS (view->document),
1651                                                                                field);
1652                         ev_document_forms_form_field_button_set_state (EV_DOCUMENT_FORMS (view->document),
1653                                                                        field, !state);
1654                 }
1655                         break;
1656
1657                 case EV_FORM_FIELD_BUTTON_RADIO: {
1658                         gboolean  state;
1659                         GList    *forms_mapping, *l;
1660
1661                         state = ev_document_forms_form_field_button_get_state (EV_DOCUMENT_FORMS (view->document),
1662                                                                                field);
1663                         if (state && field_button->state)
1664                                 return NULL;
1665
1666                         field_region = ev_view_form_field_get_region (view, field);
1667
1668                         /* For radio buttons we need to update also the region for the
1669                          * current selected item
1670                          */
1671                         forms_mapping = ev_pixbuf_cache_get_form_field_mapping (view->pixbuf_cache,
1672                                                                                 field->page);
1673                         for (l = forms_mapping; l; l = g_list_next (l)) {
1674                                 EvFormField *radio = ((EvFormFieldMapping *)(l->data))->field;
1675                                 GdkRegion   *radio_region;
1676
1677                                 if (radio->id == field->id)
1678                                         continue;
1679
1680                                 /* FIXME: only buttons in the same group should be updated */
1681                                 if (!EV_IS_FORM_FIELD_BUTTON (radio) ||
1682                                     EV_FORM_FIELD_BUTTON (radio)->type != EV_FORM_FIELD_BUTTON_RADIO ||
1683                                     EV_FORM_FIELD_BUTTON (radio)->state != TRUE)
1684                                         continue;
1685
1686                                 radio_region = ev_view_form_field_get_region (view, radio);
1687                                 gdk_region_union (field_region, radio_region);
1688                                 gdk_region_destroy (radio_region);
1689                         }
1690
1691                         ev_document_forms_form_field_button_set_state (EV_DOCUMENT_FORMS (view->document),
1692                                                                        field, TRUE);
1693                         field_button->state = TRUE;
1694                 }
1695                         break;
1696         }
1697
1698         ev_pixbuf_cache_reload_page (view->pixbuf_cache,
1699                                      field_region,
1700                                      field->page,
1701                                      view->rotation,
1702                                      view->scale);
1703         gdk_region_destroy (field_region);
1704
1705         return NULL;
1706 }
1707
1708 static void
1709 ev_view_form_field_text_save (EvView    *view,
1710                               GtkWidget *widget)
1711 {
1712         EvFormField *field;
1713
1714         field = g_object_get_data (G_OBJECT (widget), "form-field");
1715
1716         if (field->changed) {
1717                 EvFormFieldText *field_text = EV_FORM_FIELD_TEXT (field);
1718                 GdkRegion       *field_region;
1719
1720                 field_region = ev_view_form_field_get_region (view, field);
1721
1722                 ev_document_forms_form_field_text_set_text (EV_DOCUMENT_FORMS (view->document),
1723                                                             field, field_text->text);
1724                 field->changed = FALSE;
1725                 ev_pixbuf_cache_reload_page (view->pixbuf_cache,
1726                                              field_region,
1727                                              field->page,
1728                                              view->rotation,
1729                                              view->scale);
1730                 gdk_region_destroy (field_region);
1731         }
1732 }
1733
1734 static void
1735 ev_view_form_field_text_changed (GtkWidget   *widget,
1736                                  EvFormField *field)
1737 {
1738         EvFormFieldText *field_text = EV_FORM_FIELD_TEXT (field);
1739         gchar           *text = NULL;
1740
1741         if (GTK_IS_ENTRY (widget)) {
1742                 text = g_strdup (gtk_entry_get_text (GTK_ENTRY (widget)));
1743         } else if (GTK_IS_TEXT_BUFFER (widget)) {
1744                 GtkTextIter start, end;
1745
1746                 gtk_text_buffer_get_bounds (GTK_TEXT_BUFFER (widget), &start, &end);
1747                 text = gtk_text_buffer_get_text (GTK_TEXT_BUFFER (widget),
1748                                                  &start, &end, FALSE);
1749         }
1750
1751         if (!field_text->text ||
1752             (field_text->text && g_ascii_strcasecmp (field_text->text, text) != 0)) {
1753                 g_free (field_text->text);
1754                 field_text->text = text;
1755                 field->changed = TRUE;
1756         }
1757 }
1758
1759 static GtkWidget *
1760 ev_view_form_field_text_create_widget (EvView      *view,
1761                                        EvFormField *field)
1762 {
1763         EvFormFieldText *field_text = EV_FORM_FIELD_TEXT (field);
1764         GtkWidget       *text = NULL;
1765         gchar           *txt;
1766
1767         txt = ev_document_forms_form_field_text_get_text (EV_DOCUMENT_FORMS (view->document),
1768                                                           field);
1769
1770         switch (field_text->type) {
1771                 case EV_FORM_FIELD_TEXT_FILE_SELECT:
1772                         /* TODO */
1773                 case EV_FORM_FIELD_TEXT_NORMAL:
1774                 case EV_FORM_FIELD_TEXT_PASSWORD:
1775                         text = gtk_entry_new ();
1776                         gtk_entry_set_has_frame (GTK_ENTRY (text), FALSE);
1777                         gtk_entry_set_max_length (GTK_ENTRY (text), field_text->max_len);
1778                         gtk_entry_set_visibility (GTK_ENTRY (text),
1779                                                   !(field_text->type == EV_FORM_FIELD_TEXT_PASSWORD));
1780
1781                         if (txt) {
1782                                 gtk_entry_set_text (GTK_ENTRY (text), txt);
1783                                 g_free (txt);
1784                         }
1785
1786                         g_signal_connect (G_OBJECT (text), "changed",
1787                                           G_CALLBACK (ev_view_form_field_text_changed),
1788                                           field);
1789                         g_signal_connect_after (G_OBJECT (text), "activate",
1790                                                 G_CALLBACK (ev_view_form_field_destroy),
1791                                                 view);
1792                         break;
1793                 case EV_FORM_FIELD_TEXT_MULTILINE: {
1794                         GtkTextBuffer *buffer;
1795
1796                         text = gtk_text_view_new ();
1797                         buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (text));
1798
1799                         if (txt) {
1800                                 gtk_text_buffer_set_text (buffer, txt, -1);
1801                                 g_free (txt);
1802                         }
1803
1804                         g_signal_connect (G_OBJECT (buffer), "changed",
1805                                           G_CALLBACK (ev_view_form_field_text_changed),
1806                                           field);
1807                 }
1808                         break;
1809         }
1810
1811         g_object_weak_ref (G_OBJECT (text),
1812                            (GWeakNotify)ev_view_form_field_text_save,
1813                            view);
1814
1815         return text;
1816 }
1817
1818 static void
1819 ev_view_form_field_choice_save (EvView    *view,
1820                                 GtkWidget *widget)
1821 {
1822         EvFormField *field;
1823
1824         field = g_object_get_data (G_OBJECT (widget), "form-field");
1825
1826         if (field->changed) {
1827                 GList             *l;
1828                 EvFormFieldChoice *field_choice = EV_FORM_FIELD_CHOICE (field);
1829                 GdkRegion         *field_region;
1830
1831                 field_region = ev_view_form_field_get_region (view, field);
1832
1833                 if (field_choice->is_editable) {
1834                         ev_document_forms_form_field_choice_set_text (EV_DOCUMENT_FORMS (view->document),
1835                                                                       field, field_choice->text);
1836                 } else {
1837                         ev_document_forms_form_field_choice_unselect_all (EV_DOCUMENT_FORMS (view->document), field);
1838                         for (l = field_choice->selected_items; l; l = g_list_next (l)) {
1839                                 ev_document_forms_form_field_choice_select_item (EV_DOCUMENT_FORMS (view->document),
1840                                                                                  field,
1841                                                                                  GPOINTER_TO_INT (l->data));
1842                         }
1843                 }
1844                 field->changed = FALSE;
1845                 ev_pixbuf_cache_reload_page (view->pixbuf_cache,
1846                                              field_region,
1847                                              field->page,
1848                                              view->rotation,
1849                                              view->scale);
1850                 gdk_region_destroy (field_region);
1851         }
1852 }
1853
1854 static void
1855 ev_view_form_field_choice_changed (GtkWidget   *widget,
1856                                    EvFormField *field)
1857 {
1858         EvFormFieldChoice *field_choice = EV_FORM_FIELD_CHOICE (field);
1859
1860         if (GTK_IS_COMBO_BOX (widget)) {
1861                 gint item;
1862
1863                 item = gtk_combo_box_get_active (GTK_COMBO_BOX (widget));
1864                 if (GPOINTER_TO_INT (field_choice->selected_items->data) != item) {
1865                         g_list_free (field_choice->selected_items);
1866                         field_choice->selected_items = NULL;
1867                         field_choice->selected_items = g_list_prepend (field_choice->selected_items,
1868                                                                        GINT_TO_POINTER (item));
1869                         field->changed = TRUE;
1870                 }
1871
1872                 if (GTK_IS_COMBO_BOX_ENTRY (widget)) {
1873                         gchar *text;
1874
1875                         text = gtk_combo_box_get_active_text (GTK_COMBO_BOX (widget));
1876                         if (!field_choice->text ||
1877                             (field_choice->text && g_ascii_strcasecmp (field_choice->text, text) != 0)) {
1878                                 g_free (field_choice->text);
1879                                 field_choice->text = text;
1880                                 field->changed = TRUE;
1881                         }
1882                 }
1883         } else if (GTK_IS_TREE_SELECTION (widget)) {
1884                 GtkTreeSelection *selection = GTK_TREE_SELECTION (widget);
1885                 GtkTreeModel     *model;
1886                 GList            *items, *l;
1887
1888                 items = gtk_tree_selection_get_selected_rows (selection, &model);
1889                 g_list_free (field_choice->selected_items);
1890                 field_choice->selected_items = NULL;
1891
1892                 for (l = items; l && l->data; l = g_list_next (l)) {
1893                         GtkTreeIter  iter;
1894                         GtkTreePath *path = (GtkTreePath *)l->data;
1895                         gint         item;
1896
1897                         gtk_tree_model_get_iter (model, &iter, path);
1898                         gtk_tree_model_get (model, &iter, 1, &item, -1);
1899
1900                         field_choice->selected_items = g_list_prepend (field_choice->selected_items,
1901                                                                        GINT_TO_POINTER (item));
1902
1903                         gtk_tree_path_free (path);
1904                 }
1905
1906                 g_list_free (items);
1907
1908                 field->changed = TRUE;
1909         }
1910 }
1911
1912 static GtkWidget *
1913 ev_view_form_field_choice_create_widget (EvView      *view,
1914                                          EvFormField *field)
1915 {
1916         EvFormFieldChoice *field_choice = EV_FORM_FIELD_CHOICE (field);
1917         GtkWidget         *choice;
1918         GtkTreeModel      *model;
1919         gint               n_items, i;
1920         gint               selected_item = 0;
1921
1922         n_items = ev_document_forms_form_field_choice_get_n_items (EV_DOCUMENT_FORMS (view->document),
1923                                                                    field);
1924         model = GTK_TREE_MODEL (gtk_list_store_new (2, G_TYPE_STRING, G_TYPE_INT));
1925         for (i = 0; i < n_items; i++) {
1926                 GtkTreeIter iter;
1927                 gchar      *item;
1928
1929                 item = ev_document_forms_form_field_choice_get_item (EV_DOCUMENT_FORMS (view->document),
1930                                                                      field, i);
1931                 if (ev_document_forms_form_field_choice_is_item_selected (
1932                             EV_DOCUMENT_FORMS (view->document), field, i)) {
1933                         selected_item = i;
1934                         /* FIXME: we need a get_selected_items function in poppler */
1935                         field_choice->selected_items = g_list_prepend (field_choice->selected_items,
1936                                                                        GINT_TO_POINTER (i));
1937                 }
1938
1939                 if (item) {
1940                         gtk_list_store_append (GTK_LIST_STORE (model), &iter);
1941                         gtk_list_store_set (GTK_LIST_STORE (model), &iter,
1942                                             0, item,
1943                                             1, i,
1944                                             -1);
1945                         g_free (item);
1946                 }
1947         }
1948
1949         if (field_choice->type == EV_FORM_FIELD_CHOICE_LIST) {
1950                 GtkCellRenderer  *renderer;
1951                 GtkWidget        *tree_view;
1952                 GtkTreeSelection *selection;
1953
1954                 tree_view = gtk_tree_view_new_with_model (model);
1955                 gtk_tree_view_set_headers_visible (GTK_TREE_VIEW (tree_view), FALSE);
1956
1957                 selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (tree_view));
1958                 if (field_choice->multi_select) {
1959                         gtk_tree_selection_set_mode (selection, GTK_SELECTION_MULTIPLE);
1960                 }
1961
1962                 /* TODO: set selected items */
1963
1964                 renderer = gtk_cell_renderer_text_new ();
1965                 gtk_tree_view_insert_column_with_attributes (GTK_TREE_VIEW (tree_view),
1966                                                              0,
1967                                                              "choix", renderer,
1968                                                              "text", 0,
1969                                                              NULL);
1970
1971                 choice = gtk_scrolled_window_new (NULL, NULL);
1972                 gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (choice),
1973                                                 GTK_POLICY_AUTOMATIC,
1974                                                 GTK_POLICY_AUTOMATIC);
1975                 gtk_container_add (GTK_CONTAINER (choice), tree_view);
1976                 gtk_widget_show (tree_view);
1977
1978                 g_signal_connect (G_OBJECT (selection), "changed",
1979                                   G_CALLBACK (ev_view_form_field_choice_changed),
1980                                   field);
1981                 g_signal_connect_after (G_OBJECT (selection), "changed",
1982                                         G_CALLBACK (ev_view_form_field_destroy),
1983                                         view);
1984         } else if (field_choice->is_editable) { /* ComboBoxEntry */
1985                 gchar *text;
1986
1987                 choice = gtk_combo_box_entry_new_with_model (model, 0);
1988                 text = ev_document_forms_form_field_choice_get_text (EV_DOCUMENT_FORMS (view->document), field);
1989                 if (text) {
1990                         gtk_entry_set_text (GTK_ENTRY (gtk_bin_get_child (GTK_BIN (choice))), text);
1991                         g_free (text);
1992                 }
1993
1994                 g_signal_connect (G_OBJECT (choice), "changed",
1995                                   G_CALLBACK (ev_view_form_field_choice_changed),
1996                                   field);
1997                 g_signal_connect_after (G_OBJECT (GTK_BIN (choice)->child), "activate",
1998                                         G_CALLBACK (ev_view_form_field_destroy),
1999                                         view);
2000         } else { /* ComboBoxText */
2001                 GtkCellRenderer *renderer;
2002
2003                 choice = gtk_combo_box_new_with_model (model);
2004                 renderer = gtk_cell_renderer_text_new ();
2005                 gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (choice),
2006                                             renderer, TRUE);
2007                 gtk_cell_layout_set_attributes (GTK_CELL_LAYOUT (choice),
2008                                                 renderer,
2009                                                 "text", 0,
2010                                                 NULL);
2011                 gtk_combo_box_set_active (GTK_COMBO_BOX (choice), selected_item);
2012                 gtk_combo_box_popup (GTK_COMBO_BOX (choice));
2013
2014                 g_signal_connect (G_OBJECT (choice), "changed",
2015                                   G_CALLBACK (ev_view_form_field_choice_changed),
2016                                   field);
2017                 g_signal_connect_after (G_OBJECT (choice), "changed",
2018                                         G_CALLBACK (ev_view_form_field_destroy),
2019                                         view);
2020         }
2021
2022         g_object_unref (model);
2023
2024         g_object_weak_ref (G_OBJECT (choice),
2025                            (GWeakNotify)ev_view_form_field_choice_save,
2026                            view);
2027
2028         return choice;
2029 }
2030
2031 static void
2032 ev_view_handle_form_field (EvView      *view,
2033                            EvFormField *field,
2034                            gdouble      x,
2035                            gdouble      y)
2036 {
2037         GtkWidget   *field_widget = NULL;
2038         GList       *form_field_mapping;
2039         EvRectangle  field_area;
2040         GdkRectangle view_area;
2041
2042         if (field->is_read_only)
2043                 return;
2044
2045         if (EV_IS_FORM_FIELD_BUTTON (field)) {
2046                 field_widget = ev_view_form_field_button_create_widget (view, field);
2047         } else if (EV_IS_FORM_FIELD_TEXT (field)) {
2048                 field_widget = ev_view_form_field_text_create_widget (view, field);
2049         } else if (EV_IS_FORM_FIELD_CHOICE (field)) {
2050                 field_widget = ev_view_form_field_choice_create_widget (view, field);
2051         } else if (EV_IS_FORM_FIELD_SIGNATURE (field)) {
2052                 /* TODO */
2053         }
2054
2055         /* Form field doesn't require a widget */
2056         if (!field_widget)
2057                 return;
2058
2059         g_object_set_data_full (G_OBJECT (field_widget), "form-field",
2060                                 g_object_ref (field),
2061                                 (GDestroyNotify)g_object_unref);
2062
2063         form_field_mapping = ev_pixbuf_cache_get_form_field_mapping (view->pixbuf_cache, field->page);
2064         ev_form_field_mapping_get_area (form_field_mapping, field, &field_area);
2065
2066         doc_rect_to_view_rect (view, field->page, &field_area, &view_area);
2067         view_area.x -= view->scroll_x;
2068         view_area.y -= view->scroll_y;
2069
2070         gtk_layout_put (GTK_LAYOUT (view), field_widget, view_area.x, view_area.y);
2071         gtk_widget_show (field_widget);
2072         gtk_widget_grab_focus (field_widget);
2073 }
2074
2075 /*** GtkWidget implementation ***/
2076
2077 static void
2078 ev_view_size_request_continuous_dual_page (EvView         *view,
2079                                            GtkRequisition *requisition)
2080 {
2081         int max_width;
2082         gint n_pages;
2083         GtkBorder border;
2084
2085         ev_page_cache_get_max_width (view->page_cache, view->rotation,
2086                                      view->scale, &max_width);
2087         compute_border (view, max_width, max_width, &border);
2088
2089         n_pages = ev_page_cache_get_n_pages (view->page_cache) + 1;
2090
2091         requisition->width = (max_width + border.left + border.right) * 2 + (view->spacing * 3);
2092         get_page_y_offset (view, n_pages, view->scale, &requisition->height);
2093
2094         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
2095                 requisition->width = 1;
2096         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
2097                 requisition->width = 1;
2098                 /* FIXME: This could actually be set on one page docs or docs
2099                  * with a strange aspect ratio. */
2100                 /* requisition->height = 1;*/
2101         }
2102 }
2103
2104 static void
2105 ev_view_size_request_continuous (EvView         *view,
2106                                  GtkRequisition *requisition)
2107 {
2108         int max_width;
2109         int n_pages;
2110         GtkBorder border;
2111
2112
2113         ev_page_cache_get_max_width (view->page_cache, view->rotation,
2114                                      view->scale, &max_width);
2115         n_pages = ev_page_cache_get_n_pages (view->page_cache);
2116         compute_border (view, max_width, max_width, &border);
2117
2118         requisition->width = max_width + (view->spacing * 2) + border.left + border.right;
2119         get_page_y_offset (view, n_pages, view->scale, &requisition->height);
2120
2121         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
2122                 requisition->width = 1;
2123         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
2124                 requisition->width = 1;
2125                 /* FIXME: This could actually be set on one page docs or docs
2126                  * with a strange aspect ratio. */
2127                 /* requisition->height = 1;*/
2128         }
2129 }
2130
2131 static void
2132 ev_view_size_request_dual_page (EvView         *view,
2133                                 GtkRequisition *requisition)
2134 {
2135         GtkBorder border;
2136         gint width, height;
2137
2138         /* Find the largest of the two. */
2139         ev_page_cache_get_size (view->page_cache,
2140                                 view->current_page,
2141                                 view->rotation,
2142                                 view->scale,
2143                                 &width, &height);
2144         if (view->current_page + 1 < ev_page_cache_get_n_pages (view->page_cache)) {
2145                 gint width_2, height_2;
2146                 ev_page_cache_get_size (view->page_cache,
2147                                         view->current_page + 1,
2148                                         view->rotation,
2149                                         view->scale,
2150                                         &width_2, &height_2);
2151                 if (width_2 > width) {
2152                         width = width_2;
2153                         height = height_2;
2154                 }
2155         }
2156         compute_border (view, width, height, &border);
2157
2158         requisition->width = ((width + border.left + border.right) * 2) +
2159                 (view->spacing * 3);
2160         requisition->height = (height + border.top + border.bottom) +
2161                 (view->spacing * 2);
2162
2163         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
2164                 requisition->width = 1;
2165         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
2166                 requisition->width = 1;
2167                 requisition->height = 1;
2168         }
2169 }
2170
2171 static void
2172 ev_view_size_request_single_page (EvView         *view,
2173                                   GtkRequisition *requisition)
2174 {
2175         GtkBorder border;
2176         gint width, height;
2177
2178         ev_page_cache_get_size (view->page_cache,
2179                                 view->current_page,
2180                                 view->rotation,
2181                                 view->scale,
2182                                 &width, &height);
2183         compute_border (view, width, height, &border);
2184
2185         requisition->width = width + border.left + border.right + (2 * view->spacing);
2186         requisition->height = height + border.top + border.bottom + (2 * view->spacing);
2187
2188         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
2189                 requisition->width = 1;
2190                 requisition->height = height + border.top + border.bottom + (2 * view->spacing);
2191         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
2192                 requisition->width = 1;
2193                 requisition->height = 1;
2194         }
2195 }
2196
2197 static void
2198 ev_view_size_request (GtkWidget      *widget,
2199                       GtkRequisition *requisition)
2200 {
2201         EvView *view = EV_VIEW (widget);
2202
2203         if (view->document == NULL) {
2204                 requisition->width = 1;
2205                 requisition->height = 1;
2206                 return;
2207         }
2208
2209         if (view->presentation) {
2210                 requisition->width = 1;
2211                 requisition->height = 1;
2212                 return;
2213         }
2214
2215         if (view->continuous && view->dual_page)
2216                 ev_view_size_request_continuous_dual_page (view, requisition);
2217         else if (view->continuous)
2218                 ev_view_size_request_continuous (view, requisition);
2219         else if (view->dual_page)
2220                 ev_view_size_request_dual_page (view, requisition);
2221         else
2222                 ev_view_size_request_single_page (view, requisition);
2223 }
2224
2225 static void
2226 ev_view_size_allocate (GtkWidget      *widget,
2227                        GtkAllocation  *allocation)
2228 {
2229         EvView *view = EV_VIEW (widget);
2230         GList  *children, *l;
2231
2232         GTK_WIDGET_CLASS (ev_view_parent_class)->size_allocate (widget, allocation);
2233
2234         if (view->sizing_mode == EV_SIZING_FIT_WIDTH ||
2235             view->sizing_mode == EV_SIZING_BEST_FIT) {
2236
2237                 g_signal_emit (view, signals[SIGNAL_ZOOM_INVALID], 0);
2238
2239                 ev_view_size_request (widget, &widget->requisition);
2240         }
2241
2242         view_set_adjustment_values (view, GTK_ORIENTATION_HORIZONTAL);
2243         view_set_adjustment_values (view, GTK_ORIENTATION_VERTICAL);
2244
2245         if (view->document)
2246                 view_update_range_and_current_page (view);
2247
2248         view->pending_scroll = SCROLL_TO_KEEP_POSITION;
2249         view->pending_resize = FALSE;
2250
2251         children = gtk_container_get_children (GTK_CONTAINER (widget));
2252         for (l = children; l && l->data; l = g_list_next (l)) {
2253                 EvFormField   *field;
2254                 EvRectangle    field_area;
2255                 GdkRectangle   view_area;
2256                 GList         *form_field_mapping;
2257                 GtkAllocation  child_allocation;
2258                 GtkRequisition child_requisition;
2259                 GtkWidget     *child = (GtkWidget *)l->data;
2260
2261                 field = g_object_get_data (G_OBJECT (child), "form-field");
2262                 if (!field)
2263                         continue;
2264
2265                 form_field_mapping = ev_pixbuf_cache_get_form_field_mapping (view->pixbuf_cache,
2266                                                                              field->page);
2267                 ev_form_field_mapping_get_area (form_field_mapping, field, &field_area);
2268
2269                 doc_rect_to_view_rect (view, field->page, &field_area, &view_area);
2270                 view_area.x -= view->scroll_x;
2271                 view_area.y -= view->scroll_y;
2272
2273                 gtk_widget_size_request (child, &child_requisition);
2274                 if (child_requisition.width != view_area.width ||
2275                     child_requisition.height != view_area.height)
2276                         gtk_widget_set_size_request (child, view_area.width, view_area.height);
2277
2278                 gtk_container_child_get (GTK_CONTAINER (widget),
2279                                          child,
2280                                          "x", &child_allocation.x,
2281                                          "y", &child_allocation.y,
2282                                          NULL);
2283                 if (child_allocation.x != view_area.x ||
2284                     child_allocation.y != view_area.y) {
2285                         gtk_layout_move (GTK_LAYOUT (widget), child, view_area.x, view_area.y);
2286                 }
2287         }
2288         g_list_free (children);
2289 }
2290
2291 static void
2292 ev_view_realize (GtkWidget *widget)
2293 {
2294         EvView *view = EV_VIEW (widget);
2295
2296         if (GTK_WIDGET_CLASS (ev_view_parent_class)->realize)
2297                 (* GTK_WIDGET_CLASS (ev_view_parent_class)->realize) (widget);
2298
2299         gdk_window_set_events (view->layout.bin_window,
2300                                (gdk_window_get_events (view->layout.bin_window) |
2301                                 GDK_EXPOSURE_MASK |
2302                                 GDK_BUTTON_PRESS_MASK |
2303                                 GDK_BUTTON_RELEASE_MASK |
2304                                 GDK_SCROLL_MASK |
2305                                 GDK_KEY_PRESS_MASK |
2306                                 GDK_POINTER_MOTION_MASK |
2307                                 GDK_POINTER_MOTION_HINT_MASK |
2308                                 GDK_ENTER_NOTIFY_MASK |
2309                                 GDK_LEAVE_NOTIFY_MASK));
2310
2311         if (view->presentation)
2312                 gdk_window_set_background (view->layout.bin_window, &widget->style->black);
2313         else
2314                 gdk_window_set_background (view->layout.bin_window, &widget->style->mid [GTK_STATE_NORMAL]);
2315 }
2316
2317 static gboolean
2318 ev_view_scroll_event (GtkWidget *widget, GdkEventScroll *event)
2319 {
2320         EvView *view = EV_VIEW (widget);
2321         guint state;
2322
2323         state = event->state & gtk_accelerator_get_default_mod_mask ();
2324
2325         if (state == GDK_CONTROL_MASK && view->presentation == FALSE) {
2326                 ev_view_set_sizing_mode (view, EV_SIZING_FREE);
2327
2328                 if (event->direction == GDK_SCROLL_UP ||
2329                     event->direction == GDK_SCROLL_LEFT) {
2330                         if (ev_view_can_zoom_in (view)) {
2331                                 ev_view_zoom_in (view);
2332                         }
2333                 } else {
2334                         if (ev_view_can_zoom_out (view)) {
2335                                 ev_view_zoom_out (view);
2336                         }
2337                 }
2338
2339                 return TRUE;
2340         }
2341
2342         view->jump_to_find_result = FALSE;
2343         /* Shift+Wheel scrolls the in the perpendicular direction */
2344         if (state & GDK_SHIFT_MASK) {
2345                 if (event->direction == GDK_SCROLL_UP)
2346                         event->direction = GDK_SCROLL_LEFT;
2347                 if (event->direction == GDK_SCROLL_LEFT)
2348                         event->direction = GDK_SCROLL_UP;
2349                 if (event->direction == GDK_SCROLL_DOWN)
2350                         event->direction = GDK_SCROLL_RIGHT;
2351                 if (event->direction == GDK_SCROLL_RIGHT)
2352                         event->direction = GDK_SCROLL_DOWN;
2353
2354                 event->state &= ~GDK_SHIFT_MASK;
2355                 state &= ~GDK_SHIFT_MASK;
2356         }
2357
2358         if (state == 0 && view->presentation) {
2359                 switch (event->direction) {
2360                         case GDK_SCROLL_DOWN:
2361                         case GDK_SCROLL_RIGHT:
2362                                 ev_view_next_page (view);
2363                                 break;
2364                         case GDK_SCROLL_UP:
2365                         case GDK_SCROLL_LEFT:
2366                                 ev_view_previous_page (view);
2367                                 break;
2368                 }
2369
2370                 return TRUE;
2371         }
2372
2373         return FALSE;
2374 }
2375
2376 static EvViewSelection *
2377 find_selection_for_page (EvView *view,
2378                          gint    page)
2379 {
2380         GList *list;
2381
2382         for (list = view->selection_info.selections; list != NULL; list = list->next) {
2383                 EvViewSelection *selection;
2384
2385                 selection = (EvViewSelection *) list->data;
2386
2387                 if (selection->page == page)
2388                         return selection;
2389         }
2390
2391         return NULL;
2392 }
2393
2394 static void
2395 draw_end_presentation_page (EvView       *view,
2396                             GdkRectangle *page_area)
2397 {
2398         PangoLayout *layout;
2399         PangoFontDescription *font_desc;
2400         gchar *markup;
2401         const gchar *text = _("End of presentation. Press Escape to exit.");
2402
2403         if (view->presentation_state != EV_PRESENTATION_END)
2404                 return;
2405
2406         layout = gtk_widget_create_pango_layout (GTK_WIDGET (view), NULL);
2407         markup = g_strdup_printf ("<span foreground=\"white\">%s</span>", text);
2408         pango_layout_set_markup (layout, markup, -1);
2409         g_free (markup);
2410
2411         font_desc = pango_font_description_new ();
2412         pango_font_description_set_size (font_desc, 16 * PANGO_SCALE);
2413         pango_layout_set_font_description (layout, font_desc);
2414
2415         gtk_paint_layout (GTK_WIDGET (view)->style,
2416                           view->layout.bin_window,
2417                           GTK_WIDGET_STATE (view),
2418                           FALSE,
2419                           page_area,
2420                           GTK_WIDGET (view),
2421                           NULL,
2422                           page_area->x + 15,
2423                           page_area->y + 15,
2424                           layout);
2425
2426         pango_font_description_free (font_desc);
2427         g_object_unref (layout);
2428 }
2429
2430 static gboolean
2431 ev_view_expose_event (GtkWidget      *widget,
2432                       GdkEventExpose *event)
2433 {
2434         EvView *view = EV_VIEW (widget);
2435         int i;
2436
2437         if (view->presentation) {
2438                 switch (view->presentation_state) {
2439                         case EV_PRESENTATION_END: {
2440                                 GdkRectangle area = {0};
2441
2442                                 area.width = widget->allocation.width;
2443                                 area.height = widget->allocation.height;
2444
2445                                 draw_end_presentation_page (view, &area);
2446                         }
2447                                 return FALSE;
2448                         case EV_PRESENTATION_BLACK:
2449                         case EV_PRESENTATION_WHITE:
2450                                 return FALSE;
2451                         case EV_PRESENTATION_NORMAL:
2452                         default:
2453                                 break;
2454                 }
2455         } else if (view->loading) {
2456                 GdkRectangle area = {0};
2457
2458                 area.width = widget->allocation.width;
2459                 area.height = widget->allocation.height;
2460
2461                 draw_loading_text (view,
2462                                    &area,
2463                                    &(event->area));
2464         }
2465
2466         if (view->document == NULL)
2467                 return FALSE;
2468
2469         for (i = view->start_page; i <= view->end_page; i++) {
2470                 GdkRectangle page_area;
2471                 GtkBorder border;
2472                 gboolean page_ready = TRUE;
2473
2474                 if (!get_page_extents (view, i, &page_area, &border))
2475                         continue;
2476
2477                 page_area.x -= view->scroll_x;
2478                 page_area.y -= view->scroll_y;
2479
2480                 draw_one_page (view, i, &page_area, &border, &(event->area), &page_ready);
2481
2482                 if (page_ready && EV_IS_DOCUMENT_FIND (view->document))
2483                         highlight_find_results (view, i);
2484         }
2485
2486         if (GTK_WIDGET_CLASS (ev_view_parent_class)->expose_event)
2487                 (* GTK_WIDGET_CLASS (ev_view_parent_class)->expose_event) (widget, event);
2488
2489         return FALSE;
2490 }
2491
2492 static gboolean
2493 ev_view_do_popup_menu (EvView *view,
2494                        gdouble x,
2495                        gdouble y)
2496 {
2497         EvLink  *link;
2498         EvImage *image;
2499
2500         image = ev_view_get_image_at_location (view, x, y);
2501         if (image) {
2502                 g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, image);
2503                 return TRUE;
2504         }
2505
2506         link = ev_view_get_link_at_location (view, x, y);
2507         if (link) {
2508                 g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, link);
2509                 return TRUE;
2510         }
2511
2512         g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, NULL);
2513
2514         return TRUE;
2515 }
2516
2517 static gboolean
2518 ev_view_popup_menu (GtkWidget *widget)
2519 {
2520         gint x, y;
2521
2522         gtk_widget_get_pointer (widget, &x, &y);
2523         return ev_view_do_popup_menu (EV_VIEW (widget), x, y);
2524 }
2525
2526 static gboolean
2527 ev_view_button_press_event (GtkWidget      *widget,
2528                             GdkEventButton *event)
2529 {
2530         EvView *view = EV_VIEW (widget);
2531
2532         if (!view->document)
2533                 return FALSE;
2534
2535         if (!GTK_WIDGET_HAS_FOCUS (widget)) {
2536                 gtk_widget_grab_focus (widget);
2537         }
2538
2539         view->pressed_button = event->button;
2540         view->selection_info.in_drag = FALSE;
2541
2542         switch (event->button) {
2543                 case 1: {
2544                         EvImage *image;
2545                         EvFormField *field;
2546
2547                         if (view->selection_info.selections) {
2548                                 if (location_in_selected_text (view,
2549                                                                event->x + view->scroll_x,
2550                                                                event->y + view->scroll_y)) {
2551                                         view->selection_info.in_drag = TRUE;
2552                                 } else {
2553                                         clear_selection (view);
2554
2555                                         view->selection_info.start.x = event->x + view->scroll_x;
2556                                         view->selection_info.start.y = event->y + view->scroll_y;
2557                                 }
2558
2559                                 gtk_widget_queue_draw (widget);
2560                         } else if (!location_in_text (view, event->x + view->scroll_x, event->y + view->scroll_y) &&
2561                                    (image = ev_view_get_image_at_location (view, event->x, event->y))) {
2562                                 if (view->image_dnd_info.image)
2563                                         g_object_unref (view->image_dnd_info.image);
2564                                 view->image_dnd_info.image = g_object_ref (image);
2565                                 view->image_dnd_info.in_drag = TRUE;
2566
2567                                 view->image_dnd_info.start.x = event->x + view->scroll_x;
2568                                 view->image_dnd_info.start.y = event->y + view->scroll_y;
2569                         } else if ((field = ev_view_get_form_field_at_location (view, event->x, event->y))) {
2570                                 ev_view_remove_all (view);
2571                                 ev_view_handle_form_field (view, field, event->x, event->y);
2572                         } else {
2573                                 ev_view_remove_all (view);
2574                                 view->selection_info.start.x = event->x + view->scroll_x;
2575                                 view->selection_info.start.y = event->y + view->scroll_y;
2576                         }
2577                 }
2578                         return TRUE;
2579                 case 2:
2580                         /* use root coordinates as reference point because
2581                          * scrolling changes window relative coordinates */
2582                         view->drag_info.start.x = event->x_root;
2583                         view->drag_info.start.y = event->y_root;
2584                         view->drag_info.hadj = gtk_adjustment_get_value (view->hadjustment);
2585                         view->drag_info.vadj = gtk_adjustment_get_value (view->vadjustment);
2586
2587                         ev_view_set_cursor (view, EV_VIEW_CURSOR_DRAG);
2588
2589                         return TRUE;
2590                 case 3:
2591                         return ev_view_do_popup_menu (view, event->x, event->y);
2592         }
2593
2594         return FALSE;
2595 }
2596
2597 static void
2598 ev_view_remove_all (EvView *view)
2599 {
2600         GList *children, *child;
2601
2602         children = gtk_container_get_children (GTK_CONTAINER (view));
2603         for (child = children; child && child->data; child = g_list_next (child)) {
2604                 gtk_container_remove (GTK_CONTAINER (view),
2605                                       GTK_WIDGET (child->data));
2606         }
2607         g_list_free (children);
2608 }
2609
2610 /*** Drag and Drop ***/
2611 static void
2612 ev_view_drag_data_get (GtkWidget        *widget,
2613                        GdkDragContext   *context,
2614                        GtkSelectionData *selection_data,
2615                        guint             info,
2616                        guint             time)
2617 {
2618         EvView *view = EV_VIEW (widget);
2619
2620         switch (info) {
2621                 case TARGET_DND_TEXT:
2622                         if (view->selection_info.selections &&
2623                             ev_document_can_get_text (view->document)) {
2624                                 gchar *text;
2625
2626                                 text = get_selected_text (view);
2627
2628                                 gtk_selection_data_set_text (selection_data,
2629                                                              text,
2630                                                              strlen (text));
2631
2632                                 g_free (text);
2633                         }
2634                         break;
2635                 case TARGET_DND_IMAGE:
2636                         if (view->image_dnd_info.image) {
2637                                 GdkPixbuf *pixbuf;
2638
2639                                 pixbuf = ev_image_get_pixbuf (view->image_dnd_info.image);
2640                                 gtk_selection_data_set_pixbuf (selection_data, pixbuf);
2641                         }
2642                         break;
2643                 case TARGET_DND_URI:
2644                         if (view->image_dnd_info.image) {
2645                                 const gchar *tmp_uri;
2646                                 gchar      **uris;
2647
2648                                 tmp_uri = ev_image_save_tmp (view->image_dnd_info.image);
2649
2650                                 uris = g_new0 (gchar *, 2);
2651                                 uris[0] = (gchar *)tmp_uri;
2652
2653                                 gtk_selection_data_set_uris (selection_data, uris);
2654
2655                                 /* g_free instead of g_strfreev since tmp_uri is const */
2656                                 g_free (uris);
2657                         }
2658         }
2659 }
2660
2661 static gboolean
2662 ev_view_drag_motion (GtkWidget      *widget,
2663                      GdkDragContext *context,
2664                      gint            x,
2665                      gint            y,
2666                      guint           time)
2667 {
2668         if (gtk_drag_get_source_widget (context) == widget)
2669                 gdk_drag_status (context, 0, time);
2670         else
2671                 gdk_drag_status (context, context->suggested_action, time);
2672
2673         return TRUE;
2674 }
2675
2676 static void
2677 ev_view_drag_data_received (GtkWidget          *widget,
2678                             GdkDragContext     *context,
2679                             gint                x,
2680                             gint                y,
2681                             GtkSelectionData   *selection_data,
2682                             guint               info,
2683                             guint               time)
2684 {
2685         gchar  **uris;
2686         gint     i = 0;
2687         GSList  *uri_list = NULL;
2688
2689         uris = gtk_selection_data_get_uris (selection_data);
2690         if (!uris) {
2691                 gtk_drag_finish (context, FALSE, FALSE, time);
2692                 return;
2693         }
2694
2695         for (i = 0; uris[i]; i++) {
2696                 uri_list = g_slist_prepend (uri_list, (gpointer) uris[i]);
2697         }
2698
2699         ev_application_open_uri_list (EV_APP, uri_list,
2700                                       gtk_widget_get_screen (widget),
2701                                       0);
2702         gtk_drag_finish (context, TRUE, FALSE, time);
2703
2704         g_strfreev (uris);
2705         g_slist_free (uri_list);
2706 }
2707
2708
2709 static gboolean
2710 selection_update_idle_cb (EvView *view)
2711 {
2712         compute_selections (view, &view->selection_info.start, &view->motion);
2713         view->selection_update_id = 0;
2714         return FALSE;
2715 }
2716
2717 static gboolean
2718 selection_scroll_timeout_cb (EvView *view)
2719 {
2720         gint x, y, shift = 0;
2721         GtkWidget *widget = GTK_WIDGET (view);
2722
2723         gtk_widget_get_pointer (widget, &x, &y);
2724
2725         if (y > widget->allocation.height) {
2726                 shift = (y - widget->allocation.height) / 2;
2727         } else if (y < 0) {
2728                 shift = y / 2;
2729         }
2730
2731         if (shift)
2732                 gtk_adjustment_set_value (view->vadjustment,
2733                                           CLAMP (view->vadjustment->value + shift,
2734                                           view->vadjustment->lower,
2735                                           view->vadjustment->upper -
2736                                           view->vadjustment->page_size));
2737
2738         if (x > widget->allocation.width) {
2739                 shift = (x - widget->allocation.width) / 2;
2740         } else if (x < 0) {
2741                 shift = x / 2;
2742         }
2743
2744         if (shift)
2745                 gtk_adjustment_set_value (view->hadjustment,
2746                                           CLAMP (view->hadjustment->value + shift,
2747                                           view->hadjustment->lower,
2748                                           view->hadjustment->upper -
2749                                           view->hadjustment->page_size));
2750
2751         return TRUE;
2752 }
2753
2754 static gboolean
2755 ev_view_motion_notify_event (GtkWidget      *widget,
2756                              GdkEventMotion *event)
2757 {
2758         EvView *view = EV_VIEW (widget);
2759         gint x, y;
2760
2761         if (!view->document)
2762                 return FALSE;
2763
2764         if (event->is_hint || event->window != view->layout.bin_window) {
2765             gtk_widget_get_pointer (widget, &x, &y);
2766         } else {
2767             x = event->x;
2768             y = event->y;
2769         }
2770
2771         if (view->selection_info.in_drag) {
2772                 if (gtk_drag_check_threshold (widget,
2773                                               view->selection_info.start.x,
2774                                               view->selection_info.start.y,
2775                                               x, y)) {
2776                         GtkTargetList *target_list = gtk_target_list_new (NULL, 0);
2777
2778                         gtk_target_list_add_text_targets (target_list, TARGET_DND_TEXT);
2779
2780                         gtk_drag_begin (widget, target_list,
2781                                         GDK_ACTION_COPY,
2782                                         1, (GdkEvent *)event);
2783
2784                         view->selection_info.in_drag = FALSE;
2785
2786                         gtk_target_list_unref (target_list);
2787
2788                         return TRUE;
2789                 }
2790         } else if (view->image_dnd_info.in_drag) {
2791                 if (gtk_drag_check_threshold (widget,
2792                                               view->selection_info.start.x,
2793                                               view->selection_info.start.y,
2794                                               x, y)) {
2795                         GtkTargetList *target_list = gtk_target_list_new (NULL, 0);
2796
2797                         gtk_target_list_add_uri_targets (target_list, TARGET_DND_URI);
2798                         gtk_target_list_add_image_targets (target_list, TARGET_DND_IMAGE, TRUE);
2799
2800                         gtk_drag_begin (widget, target_list,
2801                                         GDK_ACTION_COPY,
2802                                         1, (GdkEvent *)event);
2803
2804                         view->image_dnd_info.in_drag = FALSE;
2805
2806                         gtk_target_list_unref (target_list);
2807
2808                         return TRUE;
2809                 }
2810         }
2811
2812         /* For the Evince 0.4.x release, we limit selection to un-rotated
2813          * documents only.
2814          */
2815         if (view->pressed_button == 1 && view->rotation == 0) {
2816
2817                 /* Schedule timeout to scroll during selection and additionally
2818                  * scroll once to allow arbitrary speed. */
2819                 if (!view->selection_scroll_id)
2820                     view->selection_scroll_id = g_timeout_add (SCROLL_TIME, (GSourceFunc)selection_scroll_timeout_cb, view);
2821                 else
2822                     selection_scroll_timeout_cb (view);
2823
2824                 view->selection_info.in_selection = TRUE;
2825                 view->motion.x = x + view->scroll_x;
2826                 view->motion.y = y + view->scroll_y;
2827
2828                 /* Queue an idle to handle the motion.  We do this because
2829                  * handling any selection events in the motion could be slower
2830                  * than new motion events reach us.  We always put it in the
2831                  * idle to make sure we catch up and don't visibly lag the
2832                  * mouse. */
2833                 if (!view->selection_update_id)
2834                         view->selection_update_id = g_idle_add ((GSourceFunc)selection_update_idle_cb, view);
2835
2836                 return TRUE;
2837         } else if (view->pressed_button == 2) {
2838                 if (!view->drag_info.in_drag) {
2839                         gboolean start;
2840
2841                         start = gtk_drag_check_threshold (widget,
2842                                                           view->drag_info.start.x,
2843                                                           view->drag_info.start.y,
2844                                                           event->x_root,
2845                                                           event->y_root);
2846                         view->drag_info.in_drag = start;
2847                 }
2848
2849                 if (view->drag_info.in_drag) {
2850                         int dx, dy;
2851                         gdouble dhadj_value, dvadj_value;
2852
2853                         dx = event->x_root - view->drag_info.start.x;
2854                         dy = event->y_root - view->drag_info.start.y;
2855
2856                         dhadj_value = view->hadjustment->page_size *
2857                                       (gdouble)dx / widget->allocation.width;
2858                         dvadj_value = view->vadjustment->page_size *
2859                                       (gdouble)dy / widget->allocation.height;
2860
2861                         /* clamp scrolling to visible area */
2862                         gtk_adjustment_set_value (view->hadjustment,
2863                                                   MIN(view->drag_info.hadj - dhadj_value,
2864                                                       view->hadjustment->upper -
2865                                                       view->hadjustment->page_size));
2866                         gtk_adjustment_set_value (view->vadjustment,
2867                                                   MIN(view->drag_info.vadj - dvadj_value,
2868                                                       view->vadjustment->upper -
2869                                                       view->vadjustment->page_size));
2870
2871                         return TRUE;
2872                 }
2873         } else if (view->pressed_button <= 0) {
2874                 ev_view_handle_cursor_over_xy (view, x, y);
2875                 return TRUE;
2876         }
2877
2878         return FALSE;
2879 }
2880
2881 static gboolean
2882 ev_view_button_release_event (GtkWidget      *widget,
2883                               GdkEventButton *event)
2884 {
2885         EvView *view = EV_VIEW (widget);
2886         EvLink *link;
2887
2888         if (view->pressed_button == 2) {
2889                 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
2890         }
2891
2892         if (view->document && view->pressed_button != 3) {
2893                 link = ev_view_get_link_at_location (view, event->x, event->y);
2894         } else {
2895                 link = NULL;
2896         }
2897
2898         view->pressed_button = -1;
2899         view->drag_info.in_drag = FALSE;
2900         view->image_dnd_info.in_drag = FALSE;
2901
2902         if (view->selection_scroll_id) {
2903             g_source_remove (view->selection_scroll_id);
2904             view->selection_scroll_id = 0;
2905         }
2906         if (view->selection_update_id) {
2907             g_source_remove (view->selection_update_id);
2908             view->selection_update_id = 0;
2909         }
2910
2911         if (view->selection_info.selections) {
2912                 ev_view_update_primary_selection (view);
2913
2914                 if (view->selection_info.in_drag) {
2915                         clear_selection (view);
2916                         gtk_widget_queue_draw (widget);
2917                 }
2918
2919                 view->selection_info.in_drag = FALSE;
2920         } else if (link) {
2921                 if (event->button == 2) {
2922                         EvLinkAction    *action;
2923                         EvLinkActionType type;
2924
2925                         action = ev_link_get_action (link);
2926                         if (!action)
2927                                 return FALSE;
2928
2929                         type = ev_link_action_get_action_type (action);
2930                         if (type == EV_LINK_ACTION_TYPE_GOTO_DEST) {
2931                                 g_signal_emit (view,
2932                                                signals[SIGNAL_EXTERNAL_LINK],
2933                                                0, action);
2934                         }
2935                 } else {
2936                         ev_view_handle_link (view, link);
2937                 }
2938         } else if (view->presentation) {
2939                 switch (event->button) {
2940                         case 1:
2941                                 ev_view_next_page (view);
2942                                 return TRUE;
2943                         case 3:
2944                                 ev_view_previous_page (view);
2945                                 return TRUE;
2946                 }
2947         }
2948
2949         return FALSE;
2950 }
2951
2952 /* Goto Window */
2953 /* Cut and paste from gtkwindow.c */
2954 static void
2955 send_focus_change (GtkWidget *widget,
2956                    gboolean   in)
2957 {
2958         GdkEvent *fevent = gdk_event_new (GDK_FOCUS_CHANGE);
2959
2960         g_object_ref (widget);
2961
2962         if (in)
2963                 GTK_WIDGET_SET_FLAGS (widget, GTK_HAS_FOCUS);
2964         else
2965                 GTK_WIDGET_UNSET_FLAGS (widget, GTK_HAS_FOCUS);
2966
2967         fevent->focus_change.type = GDK_FOCUS_CHANGE;
2968         fevent->focus_change.window = g_object_ref (widget->window);
2969         fevent->focus_change.in = in;
2970
2971         gtk_widget_event (widget, fevent);
2972
2973         g_object_notify (G_OBJECT (widget), "has-focus");
2974
2975         g_object_unref (widget);
2976         gdk_event_free (fevent);
2977 }
2978
2979 static void
2980 ev_view_goto_window_hide (EvView *view)
2981 {
2982         /* send focus-in event */
2983         send_focus_change (view->goto_entry, FALSE);
2984         gtk_widget_hide (view->goto_window);
2985         gtk_entry_set_text (GTK_ENTRY (view->goto_entry), "");
2986 }
2987
2988 static gboolean
2989 ev_view_goto_window_delete_event (GtkWidget   *widget,
2990                                   GdkEventAny *event,
2991                                   EvView      *view)
2992 {
2993         ev_view_goto_window_hide (view);
2994
2995         return TRUE;
2996 }
2997
2998 static gboolean
2999 key_is_numeric (guint keyval)
3000 {
3001         return ((keyval >= GDK_0 && keyval <= GDK_9) ||
3002                 (keyval >= GDK_KP_0 && keyval <= GDK_KP_9));
3003 }
3004
3005 static gboolean
3006 ev_view_goto_window_key_press_event (GtkWidget   *widget,
3007                                      GdkEventKey *event,
3008                                      EvView      *view)
3009 {
3010         switch (event->keyval) {
3011                 case GDK_Escape:
3012                 case GDK_Tab:
3013                 case GDK_KP_Tab:
3014                 case GDK_ISO_Left_Tab:
3015                         ev_view_goto_window_hide (view);
3016                         return TRUE;
3017                 case GDK_Return:
3018                 case GDK_KP_Enter:
3019                 case GDK_ISO_Enter:
3020                 case GDK_BackSpace:
3021                 case GDK_Delete:
3022                         return FALSE;
3023                 default:
3024                         if (!key_is_numeric (event->keyval))
3025                                 return TRUE;
3026         }
3027
3028         return FALSE;
3029 }
3030
3031 static gboolean
3032 ev_view_goto_window_button_press_event (GtkWidget      *widget,
3033                                         GdkEventButton *event,
3034                                         EvView         *view)
3035 {
3036         ev_view_goto_window_hide (view);
3037
3038         return TRUE;
3039 }
3040
3041 static void
3042 ev_view_goto_entry_activate (GtkEntry *entry,
3043                              EvView   *view)
3044 {
3045         const gchar *text;
3046         gint         page;
3047
3048         text = gtk_entry_get_text (entry);
3049         page = atoi (text) - 1;
3050
3051         ev_view_goto_window_hide (view);
3052
3053         if (page >= 0 &&
3054             page < ev_page_cache_get_n_pages (view->page_cache))
3055                 ev_page_cache_set_current_page (view->page_cache, page);
3056 }
3057
3058 static void
3059 ev_view_goto_window_create (EvView *view)
3060 {
3061         GtkWidget *frame, *hbox, *toplevel, *label;
3062
3063         toplevel = gtk_widget_get_toplevel (GTK_WIDGET (view));
3064
3065         if (view->goto_window) {
3066                 if (GTK_WINDOW (toplevel)->group)
3067                         gtk_window_group_add_window (GTK_WINDOW (toplevel)->group,
3068                                                      GTK_WINDOW (view->goto_window));
3069                 else if (GTK_WINDOW (view->goto_window)->group)
3070                         gtk_window_group_remove_window (GTK_WINDOW (view->goto_window)->group,
3071                                                         GTK_WINDOW (view->goto_window));
3072                 return;
3073         }
3074
3075         view->goto_window = gtk_window_new (GTK_WINDOW_POPUP);
3076
3077         if (GTK_WINDOW (toplevel)->group)
3078                 gtk_window_group_add_window (GTK_WINDOW (toplevel)->group,
3079                                              GTK_WINDOW (view->goto_window));
3080
3081         gtk_window_set_modal (GTK_WINDOW (view->goto_window), TRUE);
3082
3083         g_signal_connect (view->goto_window, "delete_event",
3084                           G_CALLBACK (ev_view_goto_window_delete_event),
3085                           view);
3086         g_signal_connect (view->goto_window, "key_press_event",
3087                           G_CALLBACK (ev_view_goto_window_key_press_event),
3088                           view);
3089         g_signal_connect (view->goto_window, "button_press_event",
3090                           G_CALLBACK (ev_view_goto_window_button_press_event),
3091                           view);
3092
3093         frame = gtk_frame_new (NULL);
3094         gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_ETCHED_IN);
3095         gtk_container_add (GTK_CONTAINER (view->goto_window), frame);
3096         gtk_widget_show (frame);
3097
3098         hbox = gtk_hbox_new (FALSE, 0);
3099         gtk_container_set_border_width (GTK_CONTAINER (hbox), 3);
3100         gtk_container_add (GTK_CONTAINER (frame), hbox);
3101         gtk_widget_show (hbox);
3102
3103         label = gtk_label_new(_("Jump to page:"));
3104         gtk_box_pack_start (GTK_BOX (hbox), label, TRUE, TRUE, 3);
3105         gtk_widget_show (label);
3106         gtk_widget_realize (label);
3107
3108         view->goto_entry = gtk_entry_new ();
3109         g_signal_connect (view->goto_entry, "activate",
3110                           G_CALLBACK (ev_view_goto_entry_activate),
3111                           view);
3112         gtk_box_pack_start_defaults (GTK_BOX (hbox), view->goto_entry);
3113         gtk_widget_show (view->goto_entry);
3114         gtk_widget_realize (view->goto_entry);
3115 }
3116
3117 static void
3118 ev_view_goto_entry_grab_focus (EvView *view)
3119 {
3120         GtkWidgetClass *entry_parent_class;
3121
3122         entry_parent_class = g_type_class_peek_parent (GTK_ENTRY_GET_CLASS (view->goto_entry));
3123         (entry_parent_class->grab_focus) (view->goto_entry);
3124
3125         send_focus_change (view->goto_entry, TRUE);
3126 }
3127
3128 static void
3129 ev_view_goto_window_send_key_event (EvView   *view,
3130                                     GdkEvent *event)
3131 {
3132         GdkEventKey *new_event;
3133         GdkScreen   *screen;
3134
3135         /* Move goto window off screen */
3136         screen = gtk_widget_get_screen (GTK_WIDGET (view));
3137         gtk_window_move (GTK_WINDOW (view->goto_window),
3138                          gdk_screen_get_width (screen) + 1,
3139                          gdk_screen_get_height (screen) + 1);
3140         gtk_widget_show (view->goto_window);
3141
3142         new_event = (GdkEventKey *) gdk_event_copy (event);
3143         g_object_unref (new_event->window);
3144         new_event->window = g_object_ref (view->goto_window->window);
3145         gtk_widget_realize (view->goto_window);
3146
3147         gtk_widget_event (view->goto_window, (GdkEvent *)new_event);
3148         gdk_event_free ((GdkEvent *)new_event);
3149         gtk_widget_hide (view->goto_window);
3150 }
3151
3152 static gboolean
3153 ev_view_key_press_event (GtkWidget   *widget,
3154                          GdkEventKey *event)
3155 {
3156         EvView *view = EV_VIEW (widget);
3157         EvPresentationState current;
3158
3159         if (!view->document)
3160                 return FALSE;
3161
3162         if (!view->presentation ||
3163             view->presentation_state == EV_PRESENTATION_END)
3164                 return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
3165
3166
3167         current = view->presentation_state;
3168
3169         switch (event->keyval) {
3170                 case GDK_b:
3171                 case GDK_B:
3172                         view->presentation_state =
3173                                 (view->presentation_state == EV_PRESENTATION_BLACK) ?
3174                                 EV_PRESENTATION_NORMAL : EV_PRESENTATION_BLACK;
3175                         break;
3176                 case GDK_w:
3177                 case GDK_W:
3178                         view->presentation_state =
3179                                 (view->presentation_state == EV_PRESENTATION_WHITE) ?
3180                                 EV_PRESENTATION_NORMAL : EV_PRESENTATION_WHITE;
3181                         break;
3182                 default:
3183                         if (view->presentation_state == EV_PRESENTATION_BLACK ||
3184                             view->presentation_state == EV_PRESENTATION_WHITE) {
3185                                 view->presentation_state = EV_PRESENTATION_NORMAL;
3186                         }
3187         }
3188
3189         if (current == view->presentation_state) {
3190                 if (ev_page_cache_get_n_pages (view->page_cache) > 1 &&
3191                     key_is_numeric (event->keyval)) {
3192                         gint x, y;
3193
3194                         ev_view_goto_window_create (view);
3195                         ev_view_goto_window_send_key_event (view, (GdkEvent *)event);
3196                         gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
3197                         gtk_window_move (GTK_WINDOW (view->goto_window), x, y);
3198                         gtk_widget_show (view->goto_window);
3199                         ev_view_goto_entry_grab_focus (view);
3200
3201                         return TRUE;
3202                 }
3203
3204                 return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
3205         }
3206
3207         switch (view->presentation_state) {
3208                 case EV_PRESENTATION_NORMAL:
3209                 case EV_PRESENTATION_BLACK:
3210                         gdk_window_set_background (view->layout.bin_window,
3211                                                    &widget->style->black);
3212                         break;
3213                 case EV_PRESENTATION_WHITE:
3214                         gdk_window_set_background (view->layout.bin_window,
3215                                                    &widget->style->white);
3216                         break;
3217                 default:
3218                         return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
3219         }
3220
3221         gtk_widget_queue_draw (widget);
3222         return TRUE;
3223 }
3224
3225 static gint
3226 ev_view_focus_in (GtkWidget     *widget,
3227                   GdkEventFocus *event)
3228 {
3229         if (EV_VIEW (widget)->pixbuf_cache)
3230                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
3231         gtk_widget_queue_draw (widget);
3232
3233         return FALSE;
3234 }
3235
3236 static gint
3237 ev_view_focus_out (GtkWidget     *widget,
3238                      GdkEventFocus *event)
3239 {
3240         if (EV_VIEW (widget)->goto_window)
3241                 ev_view_goto_window_hide (EV_VIEW (widget));
3242
3243         if (EV_VIEW (widget)->pixbuf_cache)
3244                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
3245         gtk_widget_queue_draw (widget);
3246
3247         return FALSE;
3248 }
3249
3250 static gboolean
3251 ev_view_leave_notify_event (GtkWidget *widget, GdkEventCrossing   *event)
3252 {
3253         EvView *view = EV_VIEW (widget);
3254
3255         ev_view_set_status (view, NULL);
3256
3257         if (view->cursor == EV_VIEW_CURSOR_LINK ||
3258             view->cursor == EV_VIEW_CURSOR_IBEAM)
3259                 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
3260
3261         if (view->link_tooltip) {
3262                 view->hovered_link = NULL;
3263                 ev_tooltip_deactivate (EV_TOOLTIP (view->link_tooltip));
3264         }
3265
3266         return FALSE;
3267 }
3268
3269 static gboolean
3270 ev_view_enter_notify_event (GtkWidget *widget, GdkEventCrossing   *event)
3271 {
3272         EvView *view = EV_VIEW (widget);
3273
3274         ev_view_handle_cursor_over_xy (view, event->x, event->y);
3275
3276         return FALSE;
3277 }
3278
3279 static void
3280 ev_view_style_set (GtkWidget *widget,
3281                    GtkStyle  *old_style)
3282 {
3283         if (EV_VIEW (widget)->pixbuf_cache)
3284                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
3285
3286         GTK_WIDGET_CLASS (ev_view_parent_class)->style_set (widget, old_style);
3287 }
3288
3289 /*** Drawing ***/
3290
3291 static guint32
3292 ev_gdk_color_to_rgb (const GdkColor *color)
3293 {
3294   guint32 result;
3295   result = (0xff0000 | (color->red & 0xff00));
3296   result <<= 8;
3297   result |= ((color->green & 0xff00) | (color->blue >> 8));
3298   return result;
3299 }
3300
3301 static void
3302 draw_rubberband (GtkWidget *widget, GdkWindow *window,
3303                  const GdkRectangle *rect, guchar alpha)
3304 {
3305         GdkGC *gc;
3306         GdkPixbuf *pixbuf;
3307         GdkColor *fill_color_gdk;
3308         guint fill_color;
3309
3310         fill_color_gdk = gdk_color_copy (&GTK_WIDGET (widget)->style->base[GTK_STATE_SELECTED]);
3311         fill_color = ev_gdk_color_to_rgb (fill_color_gdk) << 8 | alpha;
3312
3313         pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE, 8,
3314                                  rect->width, rect->height);
3315         gdk_pixbuf_fill (pixbuf, fill_color);
3316
3317         gdk_draw_pixbuf (window, NULL, pixbuf,
3318                          0, 0,
3319                          rect->x - EV_VIEW (widget)->scroll_x, rect->y - EV_VIEW (widget)->scroll_y,
3320                          rect->width, rect->height,
3321                          GDK_RGB_DITHER_NONE,
3322                          0, 0);
3323
3324         g_object_unref (pixbuf);
3325
3326         gc = gdk_gc_new (window);
3327         gdk_gc_set_rgb_fg_color (gc, fill_color_gdk);
3328         gdk_draw_rectangle (window, gc, FALSE,
3329                             rect->x - EV_VIEW (widget)->scroll_x, rect->y - EV_VIEW (widget)->scroll_y,
3330                             rect->width - 1,
3331                             rect->height - 1);
3332         g_object_unref (gc);
3333
3334         gdk_color_free (fill_color_gdk);
3335 }
3336
3337
3338 static void
3339 highlight_find_results (EvView *view, int page)
3340 {
3341         EvDocumentFind *find;
3342         int i, results = 0;
3343
3344         find = EV_DOCUMENT_FIND (view->document);
3345
3346         results = ev_document_find_get_n_results (find, page);
3347
3348         for (i = 0; i < results; i++) {
3349                 EvRectangle rectangle;
3350                 GdkRectangle view_rectangle;
3351                 guchar alpha;
3352
3353                 if (i == view->find_result && page == view->current_page) {
3354                         alpha = 0x90;
3355                 } else {
3356                         alpha = 0x20;
3357                 }
3358
3359                 ev_document_find_get_result (find, page, i, &rectangle);
3360                 doc_rect_to_view_rect (view, page, &rectangle, &view_rectangle);
3361                 draw_rubberband (GTK_WIDGET (view), view->layout.bin_window,
3362                                  &view_rectangle, alpha);
3363         }
3364 }
3365
3366 static void
3367 draw_loading_text (EvView       *view,
3368                    GdkRectangle *page_area,
3369                    GdkRectangle *expose_area)
3370 {
3371         cairo_t *cr;
3372         gint     width, height;
3373
3374         /* Don't annoy users with loading messages during presentations.
3375          * FIXME: Temporary "workaround" for
3376          * http://bugzilla.gnome.org/show_bug.cgi?id=320352 */
3377         if (view->presentation)
3378                 return;
3379
3380         if (!view->loading_text) {
3381                 const gchar *loading_text = _("Loading...");
3382                 PangoLayout *layout;
3383                 PangoFontDescription *font_desc;
3384                 PangoRectangle logical_rect;
3385                 gint target_width;
3386                 gdouble real_scale;
3387
3388                 ev_document_fc_mutex_lock ();
3389
3390                 layout = gtk_widget_create_pango_layout (GTK_WIDGET (view), loading_text);
3391
3392                 font_desc = pango_font_description_new ();
3393
3394                 /* We set the font to be 10 points, get the size, and scale appropriately */
3395                 pango_font_description_set_size (font_desc, 10 * PANGO_SCALE);
3396                 pango_layout_set_font_description (layout, font_desc);
3397                 pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
3398
3399                 target_width = MAX (page_area->width / 2, 1);
3400                 real_scale = ((double)target_width / (double) logical_rect.width) * (PANGO_SCALE * 10);
3401                 pango_font_description_set_size (font_desc, (int)real_scale);
3402                 pango_layout_set_font_description (layout, font_desc);
3403                 pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
3404
3405                 view->loading_text = cairo_image_surface_create (CAIRO_FORMAT_ARGB32,
3406                                                                  logical_rect.width,
3407                                                                  logical_rect.height);
3408                 cr = cairo_create (view->loading_text);
3409                 cairo_set_source_rgb (cr,
3410                                       155 / (double)255,
3411                                       155 / (double)255,
3412                                       155 / (double)255);
3413                 pango_cairo_show_layout (cr, layout);
3414                 cairo_destroy (cr);
3415
3416                 pango_font_description_free (font_desc);
3417                 g_object_unref (layout);
3418
3419                 ev_document_fc_mutex_unlock ();
3420         }
3421
3422         width = (page_area->width - cairo_image_surface_get_width (view->loading_text)) / 2;
3423         height = (page_area->height - cairo_image_surface_get_height (view->loading_text)) / 2;
3424
3425         cr = gdk_cairo_create (view->layout.bin_window);
3426         cairo_translate (cr,
3427                          page_area->x + width,
3428                          page_area->y + height);
3429         cairo_set_source_surface (cr, view->loading_text, 0, 0);
3430         cairo_paint (cr);
3431         cairo_destroy (cr);
3432 }
3433
3434 static void
3435 draw_one_page (EvView       *view,
3436                gint          page,
3437                GdkRectangle *page_area,
3438                GtkBorder    *border,
3439                GdkRectangle *expose_area,
3440                gboolean     *page_ready)
3441 {
3442         GdkRectangle overlap;
3443         GdkRectangle real_page_area;
3444
3445         g_assert (view->document);
3446
3447         if (! gdk_rectangle_intersect (page_area, expose_area, &overlap))
3448                 return;
3449
3450         /* Render the document itself */
3451         real_page_area = *page_area;
3452
3453         real_page_area.x += border->left;
3454         real_page_area.y += border->top;
3455         real_page_area.width -= (border->left + border->right);
3456         real_page_area.height -= (border->top + border->bottom);
3457         *page_ready = TRUE;
3458
3459         if (!view->presentation) {
3460                 gint current_page;
3461
3462                 current_page = ev_page_cache_get_current_page (view->page_cache);
3463                 ev_document_misc_paint_one_page (view->layout.bin_window,
3464                                                  GTK_WIDGET (view),
3465                                                  page_area, border,
3466                                                  page == current_page);
3467         }
3468
3469         if (gdk_rectangle_intersect (&real_page_area, expose_area, &overlap)) {
3470                 gint             width, height;
3471                 gint             page_width, page_height;
3472                 cairo_surface_t *page_surface = NULL;
3473                 gint             selection_width, selection_height;
3474                 cairo_surface_t *selection_surface = NULL;
3475                 cairo_t         *cr = NULL;
3476
3477                 page_surface = ev_pixbuf_cache_get_surface (view->pixbuf_cache, page);
3478
3479                 if (!page_surface) {
3480                         draw_loading_text (view,
3481                                            &real_page_area,
3482                                            expose_area);
3483                         *page_ready = FALSE;
3484
3485                         return;
3486                 }
3487
3488                 ev_page_cache_get_size (view->page_cache,
3489                                         page, view->rotation,
3490                                         view->scale,
3491                                         &width, &height);
3492
3493                 cr = gdk_cairo_create (view->layout.bin_window);
3494
3495                 cairo_save (cr);
3496
3497                 page_width = cairo_image_surface_get_width (page_surface);
3498                 page_height = cairo_image_surface_get_height (page_surface);
3499
3500                 cairo_rectangle (cr, overlap.x, overlap.y, overlap.width, overlap.height);
3501                 cairo_clip (cr);
3502
3503                 cairo_translate (cr, overlap.x, overlap.y);
3504
3505                 if (width != page_width || height != page_height) {
3506                         cairo_pattern_set_filter (cairo_get_source (cr),
3507                                                   CAIRO_FILTER_FAST);
3508                         cairo_scale (cr,
3509                                      (gdouble)width / page_width,
3510                                      (gdouble)height / page_height);
3511                 }
3512
3513                 cairo_surface_set_device_offset (page_surface,
3514                                                  overlap.x - real_page_area.x,
3515                                                  overlap.y - real_page_area.y);
3516
3517                 cairo_set_source_surface (cr, page_surface, 0, 0);
3518                 cairo_paint (cr);
3519
3520                 cairo_restore (cr);
3521
3522                 /* Get the selection pixbuf iff we have something to draw */
3523                 if (find_selection_for_page (view, page) &&
3524                     view->selection_mode == EV_VIEW_SELECTION_TEXT) {
3525                         selection_surface =
3526                                 ev_pixbuf_cache_get_selection_surface (view->pixbuf_cache,
3527                                                                        page,
3528                                                                        view->scale,
3529                                                                        NULL);
3530                 }
3531
3532                 if (!selection_surface) {
3533                         cairo_destroy (cr);
3534                         return;
3535                 }
3536
3537                 selection_width = cairo_image_surface_get_width (selection_surface);
3538                 selection_height = cairo_image_surface_get_height (selection_surface);
3539
3540                 cairo_rectangle (cr, overlap.x, overlap.y, overlap.width, overlap.height);
3541                 cairo_clip (cr);
3542
3543                 cairo_translate (cr, overlap.x, overlap.y);
3544
3545                 if (width != selection_width || height != selection_height) {
3546                         cairo_pattern_set_filter (cairo_get_source (cr),
3547                                                   CAIRO_FILTER_FAST);
3548                         cairo_scale (cr,
3549                                      (gdouble)width / selection_width,
3550                                      (gdouble)height / selection_height);
3551                 }
3552
3553                 cairo_surface_set_device_offset (selection_surface,
3554                                                  overlap.x - real_page_area.x,
3555                                                  overlap.y - real_page_area.y);
3556
3557                 cairo_set_source_surface (cr, selection_surface, 0, 0);
3558                 cairo_paint (cr);
3559                 cairo_destroy (cr);
3560         }
3561 }
3562
3563 /*** GObject functions ***/
3564
3565 static void
3566 ev_view_finalize (GObject *object)
3567 {
3568         EvView *view = EV_VIEW (object);
3569
3570         g_free (view->status);
3571         g_free (view->find_status);
3572
3573         clear_selection (view);
3574
3575         if (view->image_dnd_info.image)
3576                 g_object_unref (view->image_dnd_info.image);
3577         view->image_dnd_info.image = NULL;
3578
3579         G_OBJECT_CLASS (ev_view_parent_class)->finalize (object);
3580 }
3581
3582 static void
3583 ev_view_destroy (GtkObject *object)
3584 {
3585         EvView *view = EV_VIEW (object);
3586
3587         if (view->document) {
3588                 g_object_unref (view->document);
3589                 view->document = NULL;
3590         }
3591
3592         if (view->pixbuf_cache) {
3593                 g_object_unref (view->pixbuf_cache);
3594                 view->pixbuf_cache = NULL;
3595         }
3596
3597         if (view->link_tooltip) {
3598                 gtk_widget_destroy (view->link_tooltip);
3599                 view->link_tooltip = NULL;
3600         }
3601
3602         if (view->goto_window) {
3603                 gtk_widget_destroy (view->goto_window);
3604                 view->goto_window = NULL;
3605                 view->goto_entry = NULL;
3606         }
3607
3608         if (view->selection_scroll_id) {
3609             g_source_remove (view->selection_scroll_id);
3610             view->selection_scroll_id = 0;
3611         }
3612
3613         if (view->selection_update_id) {
3614             g_source_remove (view->selection_update_id);
3615             view->selection_update_id = 0;
3616         }
3617
3618         if (view->loading_text) {
3619                 cairo_surface_destroy (view->loading_text);
3620                 view->loading_text = NULL;
3621         }
3622
3623         ev_view_presentation_transition_stop (view);
3624
3625         ev_view_set_scroll_adjustments (GTK_LAYOUT (view), NULL, NULL);
3626
3627         GTK_OBJECT_CLASS (ev_view_parent_class)->destroy (object);
3628 }
3629
3630 static void
3631 ev_view_set_property (GObject      *object,
3632                       guint         prop_id,
3633                       const GValue *value,
3634                       GParamSpec   *pspec)
3635 {
3636         EvView *view = EV_VIEW (object);
3637
3638         switch (prop_id) {
3639                 case PROP_CONTINUOUS:
3640                         ev_view_set_continuous (view, g_value_get_boolean (value));
3641                         break;
3642                 case PROP_DUAL_PAGE:
3643                         ev_view_set_dual_page (view, g_value_get_boolean (value));
3644                         break;
3645                 case PROP_FULLSCREEN:
3646                         ev_view_set_fullscreen (view, g_value_get_boolean (value));
3647                         break;
3648                 case PROP_PRESENTATION:
3649                         ev_view_set_presentation (view, g_value_get_boolean (value));
3650                         break;
3651                 case PROP_SIZING_MODE:
3652                         ev_view_set_sizing_mode (view, g_value_get_enum (value));
3653                         break;
3654                 case PROP_ZOOM:
3655                         ev_view_set_zoom (view, g_value_get_double (value), FALSE);
3656                         break;
3657                 case PROP_ROTATION:
3658                         ev_view_set_rotation (view, g_value_get_int (value));
3659                         break;
3660                 default:
3661                         G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
3662         }
3663 }
3664
3665 static AtkObject *
3666 ev_view_get_accessible (GtkWidget *widget)
3667 {
3668         static gboolean first_time = TRUE;
3669
3670         if (first_time) {
3671                 AtkObjectFactory *factory;
3672                 AtkRegistry *registry;
3673                 GType derived_type;
3674                 GType derived_atk_type;
3675
3676                 /*
3677                  * Figure out whether accessibility is enabled by looking at the
3678                  * type of the accessible object which would be created for
3679                  * the parent type of EvView.
3680                  */
3681                 derived_type = g_type_parent (EV_TYPE_VIEW);
3682
3683                 registry = atk_get_default_registry ();
3684                 factory = atk_registry_get_factory (registry,
3685                                                     derived_type);
3686                 derived_atk_type = atk_object_factory_get_accessible_type (factory);
3687                 if (g_type_is_a (derived_atk_type, GTK_TYPE_ACCESSIBLE))
3688                         atk_registry_set_factory_type (registry,
3689                                                        EV_TYPE_VIEW,
3690                                                        ev_view_accessible_factory_get_type ());
3691                 first_time = FALSE;
3692         }
3693         return GTK_WIDGET_CLASS (ev_view_parent_class)->get_accessible (widget);
3694 }
3695
3696 static void
3697 ev_view_get_property (GObject *object,
3698                       guint prop_id,
3699                       GValue *value,
3700                       GParamSpec *pspec)
3701 {
3702         EvView *view = EV_VIEW (object);
3703
3704         switch (prop_id) {
3705                 case PROP_STATUS:
3706                         g_value_set_string (value, view->status);
3707                         break;
3708                 case PROP_FIND_STATUS:
3709                         g_value_set_string (value, view->status);
3710                         break;
3711                 case PROP_CONTINUOUS:
3712                         g_value_set_boolean (value, view->continuous);
3713                         break;
3714                 case PROP_DUAL_PAGE:
3715                         g_value_set_boolean (value, view->dual_page);
3716                         break;
3717                 case PROP_FULLSCREEN:
3718                         g_value_set_boolean (value, view->fullscreen);
3719                         break;
3720                 case PROP_PRESENTATION:
3721                         g_value_set_boolean (value, view->presentation);
3722                         break;
3723                 case PROP_SIZING_MODE:
3724                         g_value_set_enum (value, view->sizing_mode);
3725                         break;
3726                 case PROP_ZOOM:
3727                         g_value_set_double (value, view->scale);
3728                         break;
3729                 case PROP_ROTATION:
3730                         g_value_set_int (value, view->rotation);
3731                         break;
3732                 case PROP_HAS_SELECTION:
3733                         g_value_set_boolean (value,
3734                                              view->selection_info.selections != NULL);
3735                         break;
3736                 default:
3737                         G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
3738         }
3739 }
3740
3741 static void
3742 ev_view_class_init (EvViewClass *class)
3743 {
3744         GObjectClass *object_class = G_OBJECT_CLASS (class);
3745         GtkObjectClass *gtk_object_class = GTK_OBJECT_CLASS (class);
3746         GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
3747         GtkLayoutClass *layout_class = GTK_LAYOUT_CLASS (class);
3748         GtkBindingSet *binding_set;
3749
3750         object_class->finalize = ev_view_finalize;
3751         object_class->set_property = ev_view_set_property;
3752         object_class->get_property = ev_view_get_property;
3753
3754         widget_class->expose_event = ev_view_expose_event;
3755         widget_class->button_press_event = ev_view_button_press_event;
3756         widget_class->motion_notify_event = ev_view_motion_notify_event;
3757         widget_class->button_release_event = ev_view_button_release_event;
3758         widget_class->key_press_event = ev_view_key_press_event;
3759         widget_class->focus_in_event = ev_view_focus_in;
3760         widget_class->focus_out_event = ev_view_focus_out;
3761         widget_class->get_accessible = ev_view_get_accessible;
3762         widget_class->size_request = ev_view_size_request;
3763         widget_class->size_allocate = ev_view_size_allocate;
3764         widget_class->realize = ev_view_realize;
3765         widget_class->scroll_event = ev_view_scroll_event;
3766         widget_class->enter_notify_event = ev_view_enter_notify_event;
3767         widget_class->leave_notify_event = ev_view_leave_notify_event;
3768         widget_class->style_set = ev_view_style_set;
3769         widget_class->drag_data_get = ev_view_drag_data_get;
3770         widget_class->drag_motion = ev_view_drag_motion;
3771         widget_class->drag_data_received = ev_view_drag_data_received;
3772         widget_class->popup_menu = ev_view_popup_menu;
3773
3774         gtk_object_class->destroy = ev_view_destroy;
3775
3776         layout_class->set_scroll_adjustments = ev_view_set_scroll_adjustments;
3777
3778         class->binding_activated = ev_view_scroll;
3779
3780         signals[SIGNAL_BINDING_ACTIVATED] = g_signal_new ("binding_activated",
3781                          G_TYPE_FROM_CLASS (object_class),
3782                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
3783                          G_STRUCT_OFFSET (EvViewClass, binding_activated),
3784                          NULL, NULL,
3785                          ev_marshal_VOID__ENUM_BOOLEAN,
3786                          G_TYPE_NONE, 2,
3787                          GTK_TYPE_SCROLL_TYPE,
3788                          G_TYPE_BOOLEAN);
3789
3790         signals[SIGNAL_ZOOM_INVALID] = g_signal_new ("zoom-invalid",
3791                          G_TYPE_FROM_CLASS (object_class),
3792                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
3793                          G_STRUCT_OFFSET (EvViewClass, zoom_invalid),
3794                          NULL, NULL,
3795                          ev_marshal_VOID__VOID,
3796                          G_TYPE_NONE, 0, G_TYPE_NONE);
3797         signals[SIGNAL_HANDLE_LINK] = g_signal_new ("handle-link",
3798                          G_TYPE_FROM_CLASS (object_class),
3799                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
3800                          G_STRUCT_OFFSET (EvViewClass, handle_link),
3801                          NULL, NULL,
3802                          g_cclosure_marshal_VOID__OBJECT,
3803                          G_TYPE_NONE, 1,
3804                          G_TYPE_OBJECT);
3805         signals[SIGNAL_EXTERNAL_LINK] = g_signal_new ("external-link",
3806                          G_TYPE_FROM_CLASS (object_class),
3807                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
3808                          G_STRUCT_OFFSET (EvViewClass, external_link),
3809                          NULL, NULL,
3810                          g_cclosure_marshal_VOID__OBJECT,
3811                          G_TYPE_NONE, 1,
3812                          G_TYPE_OBJECT);
3813         signals[SIGNAL_POPUP_MENU] = g_signal_new ("popup",
3814                          G_TYPE_FROM_CLASS (object_class),
3815                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
3816                          G_STRUCT_OFFSET (EvViewClass, popup_menu),
3817                          NULL, NULL,
3818                          g_cclosure_marshal_VOID__OBJECT,
3819                          G_TYPE_NONE, 1,
3820                          G_TYPE_OBJECT);
3821
3822         g_object_class_install_property (object_class,
3823                                          PROP_STATUS,
3824                                          g_param_spec_string ("status",
3825                                                               "Status Message",
3826                                                               "The status message",
3827                                                               NULL,
3828                                                               G_PARAM_READABLE));
3829
3830         g_object_class_install_property (object_class,
3831                                          PROP_FIND_STATUS,
3832                                          g_param_spec_string ("find-status",
3833                                                               "Find Status Message",
3834                                                               "The find status message",
3835                                                               NULL,
3836                                                               G_PARAM_READABLE));
3837
3838         g_object_class_install_property (object_class,
3839                                          PROP_CONTINUOUS,
3840                                          g_param_spec_boolean ("continuous",
3841                                                                "Continuous",
3842                                                                "Continuous scrolling mode",
3843                                                                TRUE,
3844                                                                G_PARAM_READWRITE));
3845
3846         g_object_class_install_property (object_class,
3847                                          PROP_DUAL_PAGE,
3848                                          g_param_spec_boolean ("dual-page",
3849                                                                "Dual Page",
3850                                                                "Two pages visible at once",
3851                                                                FALSE,
3852                                                                G_PARAM_READWRITE));
3853         g_object_class_install_property (object_class,
3854                                          PROP_FULLSCREEN,
3855                                          g_param_spec_boolean ("fullscreen",
3856                                                                "Full Screen",
3857                                                                "Draw page in a fullscreen fashion",
3858                                                                FALSE,
3859                                                                G_PARAM_READWRITE));
3860         g_object_class_install_property (object_class,
3861                                          PROP_PRESENTATION,
3862                                          g_param_spec_boolean ("presentation",
3863                                                                "Presentation",
3864                                                                "Draw page in presentation mode",
3865                                                                TRUE,
3866                                                                G_PARAM_READWRITE));
3867
3868         g_object_class_install_property (object_class,
3869                                          PROP_SIZING_MODE,
3870                                          g_param_spec_enum ("sizing-mode",
3871                                                             "Sizing Mode",
3872                                                             "Sizing Mode",
3873                                                             EV_TYPE_SIZING_MODE,
3874                                                             EV_SIZING_FIT_WIDTH,
3875                                                             G_PARAM_READWRITE));
3876
3877         g_object_class_install_property (object_class,
3878                                          PROP_ZOOM,
3879                                          g_param_spec_double ("zoom",
3880                                                               "Zoom factor",
3881                                                               "Zoom factor",
3882                                                               0,
3883                                                               G_MAXDOUBLE,
3884                                                               1.0,
3885                                                               G_PARAM_READWRITE));
3886         g_object_class_install_property (object_class,
3887                                          PROP_ROTATION,
3888                                          g_param_spec_double ("rotation",
3889                                                               "Rotation",
3890                                                               "Rotation",
3891                                                               0,
3892                                                               360,
3893                                                               0,
3894                                                               G_PARAM_READWRITE));
3895         g_object_class_install_property (object_class,
3896                                          PROP_HAS_SELECTION,
3897                                          g_param_spec_boolean ("has-selection",
3898                                                                "Has selection",
3899                                                                "The view has selections",
3900                                                                FALSE,
3901                                                                G_PARAM_READABLE));
3902
3903         binding_set = gtk_binding_set_by_class (class);
3904
3905         add_scroll_binding_keypad (binding_set, GDK_Left,  0, EV_SCROLL_STEP_BACKWARD, TRUE);
3906         add_scroll_binding_keypad (binding_set, GDK_Right, 0, EV_SCROLL_STEP_FORWARD,  TRUE);
3907         add_scroll_binding_keypad (binding_set, GDK_Left,  GDK_MOD1_MASK, EV_SCROLL_STEP_DOWN, TRUE);
3908         add_scroll_binding_keypad (binding_set, GDK_Right, GDK_MOD1_MASK, EV_SCROLL_STEP_UP,  TRUE);
3909         add_scroll_binding_keypad (binding_set, GDK_Up,    0, EV_SCROLL_STEP_BACKWARD, FALSE);
3910         add_scroll_binding_keypad (binding_set, GDK_Down,  0, EV_SCROLL_STEP_FORWARD,  FALSE);
3911         add_scroll_binding_keypad (binding_set, GDK_Up,    GDK_MOD1_MASK, EV_SCROLL_STEP_DOWN, FALSE);
3912         add_scroll_binding_keypad (binding_set, GDK_Down,  GDK_MOD1_MASK, EV_SCROLL_STEP_UP,  FALSE);
3913 }
3914
3915 static void
3916 ev_view_init (EvView *view)
3917 {
3918         GTK_WIDGET_SET_FLAGS (view, GTK_CAN_FOCUS);
3919
3920         view->spacing = 5;
3921         view->scale = 1.0;
3922         view->current_page = 0;
3923         view->pressed_button = -1;
3924         view->cursor = EV_VIEW_CURSOR_NORMAL;
3925         view->drag_info.in_drag = FALSE;
3926         view->selection_info.selections = NULL;
3927         view->selection_info.in_selection = FALSE;
3928         view->selection_info.in_drag = FALSE;
3929         view->selection_mode = EV_VIEW_SELECTION_TEXT;
3930         view->continuous = TRUE;
3931         view->dual_page = FALSE;
3932         view->presentation = FALSE;
3933         view->presentation_state = EV_PRESENTATION_NORMAL;
3934         view->fullscreen = FALSE;
3935         view->sizing_mode = EV_SIZING_FIT_WIDTH;
3936         view->pending_scroll = SCROLL_TO_KEEP_POSITION;
3937         view->jump_to_find_result = TRUE;
3938
3939         gtk_layout_set_hadjustment (GTK_LAYOUT (view), NULL);
3940         gtk_layout_set_vadjustment (GTK_LAYOUT (view), NULL);
3941
3942         gtk_drag_dest_set (GTK_WIDGET (view),
3943                            GTK_DEST_DEFAULT_ALL,
3944                            view_drop_targets,
3945                            G_N_ELEMENTS (view_drop_targets),
3946                            GDK_ACTION_COPY);
3947 }
3948
3949 /*** Callbacks ***/
3950
3951 static void
3952 find_changed_cb (EvDocument *document, int page, EvView *view)
3953 {
3954         double percent;
3955         int n_pages;
3956
3957         percent = ev_document_find_get_progress
3958                         (EV_DOCUMENT_FIND (view->document));
3959         n_pages = ev_page_cache_get_n_pages (view->page_cache);
3960
3961         if (view->jump_to_find_result == TRUE) {
3962                 jump_to_find_page (view, EV_VIEW_FIND_NEXT, 0);
3963                 jump_to_find_result (view);
3964         }
3965         update_find_status_message (view, percent * n_pages >= n_pages - 1 );
3966         if (view->current_page == page)
3967                 gtk_widget_queue_draw (GTK_WIDGET (view));
3968 }
3969
3970 static void
3971 job_finished_cb (EvPixbufCache *pixbuf_cache,
3972                  GdkRegion     *region,
3973                  EvView        *view)
3974 {
3975         if (region) {
3976                 gdk_window_invalidate_region (view->layout.bin_window,
3977                                               region, TRUE);
3978         } else {
3979                 gtk_widget_queue_draw (GTK_WIDGET (view));
3980         }
3981 }
3982
3983 static void
3984 page_changed_cb (EvPageCache *page_cache,
3985                  int          new_page,
3986                  EvView      *view)
3987 {
3988         if (view->current_page != new_page) {
3989                 gint x, y;
3990
3991                 view->current_page = new_page;
3992                 view->pending_scroll = SCROLL_TO_PAGE_POSITION;
3993
3994                 if (view->presentation)
3995                         ev_view_presentation_transition_start (view);
3996
3997                 gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
3998                 ev_view_handle_cursor_over_xy (view, x, y);
3999
4000                 gtk_widget_queue_resize (GTK_WIDGET (view));
4001         } else {
4002                 gtk_widget_queue_draw (GTK_WIDGET (view));
4003         }
4004
4005         if (EV_IS_DOCUMENT_FIND (view->document)) {
4006                 view->find_result = 0;
4007                 update_find_status_message (view, TRUE);
4008         }
4009 }
4010
4011 static void
4012 on_adjustment_value_changed (GtkAdjustment *adjustment,
4013                              EvView        *view)
4014 {
4015         int dx = 0, dy = 0;
4016         gint x, y;
4017         GList *children, *l;
4018
4019         if (! GTK_WIDGET_REALIZED (view))
4020                 return;
4021
4022         if (view->hadjustment) {
4023                 dx = view->scroll_x - (int) view->hadjustment->value;
4024                 view->scroll_x = (int) view->hadjustment->value;
4025         } else {
4026                 view->scroll_x = 0;
4027         }
4028
4029         if (view->vadjustment) {
4030                 dy = view->scroll_y - (int) view->vadjustment->value;
4031                 view->scroll_y = (int) view->vadjustment->value;
4032         } else {
4033                 view->scroll_y = 0;
4034         }
4035
4036         children = gtk_container_get_children (GTK_CONTAINER (view));
4037         for (l = children; l && l->data; l = g_list_next (l)) {
4038                 gint       child_x, child_y;
4039                 GtkWidget *child = (GtkWidget *)l->data;
4040
4041                 gtk_container_child_get (GTK_CONTAINER (view),
4042                                          child,
4043                                          "x", &child_x,
4044                                          "y", &child_y,
4045                                          NULL);
4046                 gtk_layout_move (GTK_LAYOUT (view), child, child_x + dx, child_y + dy);
4047         }
4048         g_list_free (children);
4049
4050         if (view->pending_resize)
4051                 gtk_widget_queue_draw (GTK_WIDGET (view));
4052         else
4053                 gdk_window_scroll (view->layout.bin_window, dx, dy);
4054
4055         gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
4056         ev_view_handle_cursor_over_xy (view, x, y);
4057
4058         if (view->document)
4059                 view_update_range_and_current_page (view);
4060 }
4061
4062 GtkWidget*
4063 ev_view_new (void)
4064 {
4065         GtkWidget *view;
4066
4067         view = g_object_new (EV_TYPE_VIEW, NULL);
4068
4069         return view;
4070 }
4071
4072 static void
4073 setup_caches (EvView *view)
4074 {
4075         view->page_cache = ev_page_cache_get (view->document);
4076         g_signal_connect (view->page_cache, "page-changed", G_CALLBACK (page_changed_cb), view);
4077         view->pixbuf_cache = ev_pixbuf_cache_new (GTK_WIDGET (view), view->document);
4078         g_signal_connect (view->pixbuf_cache, "job-finished", G_CALLBACK (job_finished_cb), view);
4079         page_changed_cb (view->page_cache,
4080                          ev_page_cache_get_current_page (view->page_cache),
4081                          view);
4082 }
4083
4084 static void
4085 clear_caches (EvView *view)
4086 {
4087         if (view->pixbuf_cache) {
4088                 g_object_unref (view->pixbuf_cache);
4089                 view->pixbuf_cache = NULL;
4090         }
4091
4092         if (view->page_cache) {
4093                 view->page_cache = NULL;
4094         }
4095 }
4096
4097 void
4098 ev_view_set_loading (EvView       *view,
4099                      gboolean      loading)
4100 {
4101         view->loading = loading;
4102         gtk_widget_queue_draw (GTK_WIDGET (view));
4103 }
4104
4105 void
4106 ev_view_set_document (EvView     *view,
4107                       EvDocument *document)
4108 {
4109         g_return_if_fail (EV_IS_VIEW (view));
4110
4111         view->loading = FALSE;
4112
4113         if (document != view->document) {
4114                 clear_caches (view);
4115
4116                 if (view->document) {
4117                         g_signal_handlers_disconnect_by_func (view->document,
4118                                                               find_changed_cb,
4119                                                               view);
4120                         g_object_unref (view->document);
4121                         view->page_cache = NULL;
4122
4123                 }
4124
4125                 view->document = document;
4126                 view->find_result = 0;
4127
4128                 if (view->document) {
4129                         g_object_ref (view->document);
4130                         if (EV_IS_DOCUMENT_FIND (view->document)) {
4131                                 g_signal_connect (view->document,
4132                                                   "find_changed",
4133                                                   G_CALLBACK (find_changed_cb),
4134                                                   view);
4135                         }
4136
4137                         setup_caches (view);
4138                 }
4139
4140                 gtk_widget_queue_resize (GTK_WIDGET (view));
4141         }
4142 }
4143
4144 /*** Zoom and sizing mode ***/
4145
4146 #define EPSILON 0.0000001
4147 void
4148 ev_view_set_zoom (EvView   *view,
4149                   double    factor,
4150                   gboolean  relative)
4151 {
4152         double scale;
4153
4154         if (relative)
4155                 scale = view->scale * factor;
4156         else
4157                 scale = factor;
4158
4159         scale = CLAMP (scale, view->min_scale, view->max_scale);
4160
4161         if (ABS (view->scale - scale) < EPSILON)
4162                 return;
4163
4164         if (view->loading_text) {
4165                 cairo_surface_destroy (view->loading_text);
4166                 view->loading_text = NULL;
4167         }
4168
4169         view->scale = scale;
4170         view->pending_resize = TRUE;
4171
4172         gtk_widget_queue_resize (GTK_WIDGET (view));
4173
4174         g_object_notify (G_OBJECT (view), "zoom");
4175 }
4176
4177 double
4178 ev_view_get_zoom (EvView *view)
4179 {
4180         return view->scale;
4181 }
4182
4183 void
4184 ev_view_set_screen_dpi (EvView  *view,
4185                         gdouble  dpi)
4186 {
4187         g_return_if_fail (EV_IS_VIEW (view));
4188         g_return_if_fail (dpi > 0);
4189
4190         view->dpi = dpi;
4191         view->min_scale = MIN_SCALE * dpi / 72.0;
4192         view->max_scale = MAX_SCALE * dpi / 72.0;
4193 }
4194
4195 gboolean
4196 ev_view_get_continuous (EvView *view)
4197 {
4198         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
4199
4200         return view->continuous;
4201 }
4202
4203 void
4204 ev_view_set_continuous (EvView   *view,
4205                         gboolean  continuous)
4206 {
4207         g_return_if_fail (EV_IS_VIEW (view));
4208
4209         continuous = continuous != FALSE;
4210
4211         if (view->continuous != continuous) {
4212                 view->continuous = continuous;
4213                 view->pending_scroll = SCROLL_TO_PAGE_POSITION;
4214                 gtk_widget_queue_resize (GTK_WIDGET (view));
4215         }
4216
4217         g_object_notify (G_OBJECT (view), "continuous");
4218 }
4219
4220 gboolean
4221 ev_view_get_dual_page (EvView *view)
4222 {
4223         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
4224
4225         return view->dual_page;
4226 }
4227
4228 void
4229 ev_view_set_dual_page (EvView   *view,
4230                        gboolean  dual_page)
4231 {
4232         g_return_if_fail (EV_IS_VIEW (view));
4233
4234         dual_page = dual_page != FALSE;
4235
4236         if (view->dual_page == dual_page)
4237                 return;
4238
4239         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
4240         view->dual_page = dual_page;
4241         /* FIXME: if we're keeping the pixbuf cache around, we should extend the
4242          * preload_cache_size to be 2 if dual_page is set.
4243          */
4244         gtk_widget_queue_resize (GTK_WIDGET (view));
4245
4246         g_object_notify (G_OBJECT (view), "dual-page");
4247 }
4248
4249 void
4250 ev_view_set_fullscreen (EvView   *view,
4251                          gboolean  fullscreen)
4252 {
4253         g_return_if_fail (EV_IS_VIEW (view));
4254
4255         fullscreen = fullscreen != FALSE;
4256
4257         if (view->fullscreen == fullscreen)
4258                 return;
4259
4260         view->fullscreen = fullscreen;
4261         gtk_widget_queue_resize (GTK_WIDGET (view));
4262
4263         g_object_notify (G_OBJECT (view), "fullscreen");
4264 }
4265
4266 gboolean
4267 ev_view_get_fullscreen (EvView *view)
4268 {
4269         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
4270
4271         return view->fullscreen;
4272 }
4273
4274 void
4275 ev_view_set_presentation (EvView   *view,
4276                           gboolean  presentation)
4277 {
4278         g_return_if_fail (EV_IS_VIEW (view));
4279
4280         presentation = presentation != FALSE;
4281
4282         if (view->presentation == presentation)
4283                 return;
4284
4285         if (!presentation)
4286                 view->presentation_state = EV_PRESENTATION_NORMAL;
4287
4288         view->presentation = presentation;
4289         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
4290
4291         if (presentation) {
4292                 view->sizing_mode_saved = view->sizing_mode;
4293                 view->scale_saved = view->scale;
4294                 ev_view_set_sizing_mode (view, EV_SIZING_BEST_FIT);
4295         } else {
4296                 ev_view_set_sizing_mode (view, view->sizing_mode_saved);
4297                 ev_view_set_zoom (view, view->scale_saved, FALSE);
4298         }
4299
4300         gtk_widget_queue_resize (GTK_WIDGET (view));
4301
4302         if (presentation)
4303                 ev_view_presentation_transition_start (view);
4304         else
4305                 ev_view_presentation_transition_stop (view);
4306
4307         if (GTK_WIDGET_REALIZED (view)) {
4308                 if (view->presentation)
4309                         gdk_window_set_background (view->layout.bin_window,
4310                                                    &GTK_WIDGET (view)->style->black);
4311                 else
4312                         gdk_window_set_background (view->layout.bin_window,
4313                                                    &GTK_WIDGET (view)->style->mid [GTK_STATE_NORMAL]);
4314         }
4315
4316         g_object_notify (G_OBJECT (view), "presentation");
4317 }
4318
4319 gboolean
4320 ev_view_get_presentation (EvView *view)
4321 {
4322         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
4323
4324         return view->presentation;
4325 }
4326
4327 static gboolean
4328 transition_next_page (EvView *view)
4329 {
4330         ev_view_next_page (view);
4331
4332         return FALSE;
4333 }
4334
4335 static void
4336 ev_view_presentation_transition_stop (EvView *view)
4337 {
4338         if (view->trans_timeout_id > 0)
4339                 g_source_remove (view->trans_timeout_id);
4340         view->trans_timeout_id = 0;
4341 }
4342
4343 static void
4344 ev_view_presentation_transition_start (EvView *view)
4345 {
4346         gdouble duration;
4347
4348         if (!EV_IS_DOCUMENT_TRANSITION (view->document))
4349                 return;
4350
4351         ev_view_presentation_transition_stop (view);
4352
4353         duration = ev_document_transition_get_page_duration (EV_DOCUMENT_TRANSITION (view->document),
4354                                                              view->current_page);
4355         if (duration > 0)
4356                 view->trans_timeout_id = g_timeout_add (duration * 1000,
4357                                                         (GSourceFunc) transition_next_page,
4358                                                         view);
4359 }
4360
4361 void
4362 ev_view_set_sizing_mode (EvView       *view,
4363                          EvSizingMode  sizing_mode)
4364 {
4365         g_return_if_fail (EV_IS_VIEW (view));
4366
4367         if (view->sizing_mode == sizing_mode)
4368                 return;
4369
4370         view->sizing_mode = sizing_mode;
4371         gtk_widget_queue_resize (GTK_WIDGET (view));
4372
4373         g_object_notify (G_OBJECT (view), "sizing-mode");
4374 }
4375
4376 EvSizingMode
4377 ev_view_get_sizing_mode (EvView *view)
4378 {
4379         g_return_val_if_fail (EV_IS_VIEW (view), EV_SIZING_FREE);
4380
4381         return view->sizing_mode;
4382 }
4383
4384 gboolean
4385 ev_view_can_zoom_in (EvView *view)
4386 {
4387         return view->scale * ZOOM_IN_FACTOR <= view->max_scale;
4388 }
4389
4390 gboolean
4391 ev_view_can_zoom_out (EvView *view)
4392 {
4393         return view->scale * ZOOM_OUT_FACTOR >= view->min_scale;
4394 }
4395
4396 void
4397 ev_view_zoom_in (EvView *view)
4398 {
4399         g_return_if_fail (view->sizing_mode == EV_SIZING_FREE);
4400
4401         if (view->presentation)
4402                 return;
4403
4404         view->pending_scroll = SCROLL_TO_CENTER;
4405         ev_view_set_zoom (view, ZOOM_IN_FACTOR, TRUE);
4406 }
4407
4408 void
4409 ev_view_zoom_out (EvView *view)
4410 {
4411         g_return_if_fail (view->sizing_mode == EV_SIZING_FREE);
4412
4413         if (view->presentation)
4414                 return;
4415
4416         view->pending_scroll = SCROLL_TO_CENTER;
4417         ev_view_set_zoom (view, ZOOM_OUT_FACTOR, TRUE);
4418 }
4419
4420 void
4421 ev_view_rotate_right (EvView *view)
4422 {
4423         int rotation = view->rotation + 90;
4424
4425         if (rotation >= 360) {
4426                 rotation -= 360;
4427         }
4428
4429         ev_view_set_rotation (view, rotation);
4430 }
4431
4432 void
4433 ev_view_rotate_left (EvView *view)
4434 {
4435         int rotation = view->rotation - 90;
4436
4437         if (rotation < 0) {
4438                 rotation += 360;
4439         }
4440
4441         ev_view_set_rotation (view, rotation);
4442 }
4443
4444 void
4445 ev_view_set_rotation (EvView *view, int rotation)
4446 {
4447         view->rotation = rotation;
4448
4449         if (view->pixbuf_cache) {
4450                 ev_pixbuf_cache_clear (view->pixbuf_cache);
4451                 gtk_widget_queue_resize (GTK_WIDGET (view));
4452         }
4453
4454         if (rotation != 0)
4455                 clear_selection (view);
4456
4457         g_object_notify (G_OBJECT (view), "rotation");
4458 }
4459
4460 int
4461 ev_view_get_rotation (EvView *view)
4462 {
4463         return view->rotation;
4464 }
4465
4466 static double
4467 zoom_for_size_fit_width (int doc_width,
4468                          int doc_height,
4469                          int target_width,
4470                          int target_height,
4471                          int vsb_width)
4472 {
4473         double scale;
4474
4475         scale = (double)target_width / doc_width;
4476
4477         if (doc_height * scale > target_height)
4478                 scale = (double) (target_width - vsb_width) / doc_width;
4479
4480         return scale;
4481 }
4482
4483 static double
4484 zoom_for_size_fit_height (int doc_width,
4485                           int doc_height,
4486                           int target_width,
4487                           int target_height,
4488                           int vsb_height)
4489 {
4490         double scale;
4491
4492         scale = (double)target_height / doc_height;
4493
4494         if (doc_width * scale > target_width)
4495                 scale = (double) (target_height - vsb_height) / doc_height;
4496
4497         return scale;
4498 }
4499
4500 static double
4501 zoom_for_size_best_fit (int doc_width,
4502                         int doc_height,
4503                         int target_width,
4504                         int target_height,
4505                         int vsb_width,
4506                         int hsb_width)
4507 {
4508         double w_scale;
4509         double h_scale;
4510
4511         w_scale = (double)target_width / doc_width;
4512         h_scale = (double)target_height / doc_height;
4513
4514         if (doc_height * w_scale > target_height)
4515                 w_scale = (double) (target_width - vsb_width) / doc_width;
4516         if (doc_width * h_scale > target_width)
4517                 h_scale = (double) (target_height - hsb_width) / doc_height;
4518
4519         return MIN (w_scale, h_scale);
4520 }
4521
4522
4523 static void
4524 ev_view_zoom_for_size_presentation (EvView *view,
4525                                     int     width,
4526                                     int     height)
4527 {
4528         int doc_width, doc_height;
4529         gdouble scale;
4530
4531         ev_page_cache_get_size (view->page_cache,
4532                                 view->current_page,
4533                                 view->rotation,
4534                                 1.0,
4535                                 &doc_width,
4536                                 &doc_height);
4537         scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, 0, 0);
4538         ev_view_set_zoom (view, scale, FALSE);
4539 }
4540
4541 static void
4542 ev_view_zoom_for_size_continuous_and_dual_page (EvView *view,
4543                            int     width,
4544                            int     height,
4545                            int     vsb_width,
4546                            int     hsb_height)
4547 {
4548         int doc_width, doc_height;
4549         GtkBorder border;
4550         gdouble scale;
4551
4552         ev_page_cache_get_max_width (view->page_cache,
4553                                      view->rotation,
4554                                      1.0,
4555                                      &doc_width);
4556         ev_page_cache_get_max_height (view->page_cache,
4557                                       view->rotation,
4558                                       1.0,
4559                                       &doc_height);
4560         compute_border (view, doc_width, doc_height, &border);
4561
4562         doc_width = doc_width * 2;
4563         width -= (2 * (border.left + border.right) + 3 * view->spacing);
4564         height -= (border.top + border.bottom + 2 * view->spacing - 1);
4565
4566         /* FIXME: We really need to calculate the overall height here, not the
4567          * page height.  We assume there's always a vertical scrollbar for
4568          * now.  We need to fix this. */
4569         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
4570                 scale = zoom_for_size_fit_width (doc_width, doc_height, width - vsb_width, height, 0);
4571         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
4572                 scale = zoom_for_size_best_fit (doc_width, doc_height, width - vsb_width, height, 0, hsb_height);
4573         else
4574                 g_assert_not_reached ();
4575
4576         ev_view_set_zoom (view, scale, FALSE);
4577 }
4578
4579 static void
4580 ev_view_zoom_for_size_continuous (EvView *view,
4581                                   int     width,
4582                                   int     height,
4583                                   int     vsb_width,
4584                                   int     hsb_height)
4585 {
4586         int doc_width, doc_height;
4587         GtkBorder border;
4588         gdouble scale;
4589
4590         ev_page_cache_get_max_width (view->page_cache,
4591                                      view->rotation,
4592                                      1.0,
4593                                      &doc_width);
4594         ev_page_cache_get_max_height (view->page_cache,
4595                                       view->rotation,
4596                                       1.0,
4597                                       &doc_height);
4598         compute_border (view, doc_width, doc_height, &border);
4599
4600         width -= (border.left + border.right + 2 * view->spacing);
4601         height -= (border.top + border.bottom + 2 * view->spacing - 1);
4602
4603         /* FIXME: We really need to calculate the overall height here, not the
4604          * page height.  We assume there's always a vertical scrollbar for
4605          * now.  We need to fix this. */
4606         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
4607                 scale = zoom_for_size_fit_width (doc_width, doc_height, width - vsb_width, height, 0);
4608         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
4609                 scale = zoom_for_size_best_fit (doc_width, doc_height, width - vsb_width, height, 0, hsb_height);
4610         else
4611                 g_assert_not_reached ();
4612
4613         ev_view_set_zoom (view, scale, FALSE);
4614 }
4615
4616 static void
4617 ev_view_zoom_for_size_dual_page (EvView *view,
4618                                  int     width,
4619                                  int     height,
4620                                  int     vsb_width,
4621                                  int     hsb_height)
4622 {
4623         GtkBorder border;
4624         gint doc_width, doc_height;
4625         gdouble scale;
4626         gint other_page;
4627
4628         other_page = view->current_page ^ 1;
4629
4630         /* Find the largest of the two. */
4631         ev_page_cache_get_size (view->page_cache,
4632                                 view->current_page,
4633                                 view->rotation,
4634                                 1.0,
4635                                 &doc_width, &doc_height);
4636
4637         if (other_page < ev_page_cache_get_n_pages (view->page_cache)) {
4638                 gint width_2, height_2;
4639                 ev_page_cache_get_size (view->page_cache,
4640                                         other_page,
4641                                         view->rotation,
4642                                         1.0,
4643                                         &width_2, &height_2);
4644                 if (width_2 > doc_width)
4645                         doc_width = width_2;
4646                 if (height_2 > doc_height)
4647                         doc_height = height_2;
4648         }
4649         compute_border (view, doc_width, doc_height, &border);
4650
4651         doc_width = doc_width * 2;
4652         width -= ((border.left + border.right)* 2 + 3 * view->spacing);
4653         height -= (border.top + border.bottom + 2 * view->spacing);
4654
4655         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
4656                 scale = zoom_for_size_fit_width (doc_width, doc_height, width, height, vsb_width);
4657         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
4658                 scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, vsb_width, hsb_height);
4659         else
4660                 g_assert_not_reached ();
4661
4662         ev_view_set_zoom (view, scale, FALSE);
4663 }
4664
4665 static void
4666 ev_view_zoom_for_size_single_page (EvView *view,
4667                                    int     width,
4668                                    int     height,
4669                                    int     vsb_width,
4670                                    int     hsb_height)
4671 {
4672         int doc_width, doc_height;
4673         GtkBorder border;
4674         gdouble scale;
4675
4676         ev_page_cache_get_size (view->page_cache,
4677                                 view->current_page,
4678                                 view->rotation,
4679                                 1.0,
4680                                 &doc_width,
4681                                 &doc_height);
4682         /* Get an approximate border */
4683         compute_border (view, width, height, &border);
4684
4685         width -= (border.left + border.right + 2 * view->spacing);
4686         height -= (border.top + border.bottom + 2 * view->spacing);
4687
4688         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
4689                 scale = zoom_for_size_fit_width (doc_width, doc_height, width, height, vsb_width);
4690         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
4691                 scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, vsb_width, hsb_height);
4692         else
4693                 g_assert_not_reached ();
4694
4695         ev_view_set_zoom (view, scale, FALSE);
4696 }
4697
4698 void
4699 ev_view_set_zoom_for_size (EvView *view,
4700                            int     width,
4701                            int     height,
4702                            int     vsb_width,
4703                            int     hsb_height)
4704 {
4705         g_return_if_fail (view->sizing_mode == EV_SIZING_FIT_WIDTH ||
4706                           view->sizing_mode == EV_SIZING_BEST_FIT);
4707         g_return_if_fail (width >= 0);
4708         g_return_if_fail (height >= 0);
4709
4710         if (view->document == NULL)
4711                 return;
4712
4713         if (view->presentation)
4714                 ev_view_zoom_for_size_presentation (view, width, height);
4715         else if (view->continuous && view->dual_page)
4716                 ev_view_zoom_for_size_continuous_and_dual_page (view, width, height, vsb_width, hsb_height);
4717         else if (view->continuous)
4718                 ev_view_zoom_for_size_continuous (view, width, height, vsb_width, hsb_height);
4719         else if (view->dual_page)
4720                 ev_view_zoom_for_size_dual_page (view, width, height, vsb_width, hsb_height);
4721         else
4722                 ev_view_zoom_for_size_single_page (view, width, height, vsb_width, hsb_height);
4723 }
4724
4725 /*** Status text messages ***/
4726
4727 const char *
4728 ev_view_get_status (EvView *view)
4729 {
4730         g_return_val_if_fail (EV_IS_VIEW (view), NULL);
4731
4732         return view->status;
4733 }
4734
4735 static void
4736 ev_view_set_status (EvView *view, const char *message)
4737 {
4738         g_return_if_fail (EV_IS_VIEW (view));
4739
4740         if (message != view->status) {
4741                 g_free (view->status);
4742                 view->status = g_strdup (message);
4743                 g_object_notify (G_OBJECT (view), "status");
4744         }
4745 }
4746
4747 static void
4748 update_find_status_message (EvView *view, gboolean this_page)
4749 {
4750         char *message;
4751
4752         if (this_page) {
4753                 int results;
4754
4755                 results = ev_document_find_get_n_results
4756                                 (EV_DOCUMENT_FIND (view->document),
4757                                  view->current_page);
4758                 /* TRANS: Sometimes this could be better translated as
4759                    "%d hit(s) on this page".  Therefore this string
4760                    contains plural cases. */
4761                 message = g_strdup_printf (ngettext ("%d found on this page",
4762                                                      "%d found on this page",
4763                                                      results),
4764                                            results);
4765         } else {
4766                 double percent;
4767
4768                 percent = ev_document_find_get_progress
4769                                 (EV_DOCUMENT_FIND (view->document));
4770                 message = g_strdup_printf (_("%3d%% remaining to search"),
4771                                            (int) ((1.0 - percent) * 100));
4772
4773         }
4774         ev_view_set_find_status (view, message);
4775         g_free (message);
4776 }
4777
4778 const char *
4779 ev_view_get_find_status (EvView *view)
4780 {
4781         g_return_val_if_fail (EV_IS_VIEW (view), NULL);
4782
4783         return view->find_status;
4784 }
4785
4786 static void
4787 ev_view_set_find_status (EvView *view, const char *message)
4788 {
4789         g_return_if_fail (EV_IS_VIEW (view));
4790
4791         g_free (view->find_status);
4792         view->find_status = g_strdup (message);
4793         g_object_notify (G_OBJECT (view), "find-status");
4794 }
4795
4796 /*** Find ***/
4797
4798 static void
4799 jump_to_find_result (EvView *view)
4800 {
4801         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
4802         EvRectangle rect;
4803         GdkRectangle view_rect;
4804         int n_results;
4805         int page = view->current_page;
4806
4807         n_results = ev_document_find_get_n_results (find, page);
4808
4809         if (n_results > 0  && view->find_result < n_results) {
4810                 ev_document_find_get_result
4811                         (find, page, view->find_result, &rect);
4812
4813                 doc_rect_to_view_rect (view, page, &rect, &view_rect);
4814                 ensure_rectangle_is_visible (view, &view_rect);
4815         }
4816 }
4817
4818 /**
4819  * jump_to_find_page
4820  * @view: #EvView instance
4821  * @direction: Direction to look
4822  * @shift: Shift from current page
4823  *
4824  * Jumps to the first page that has occurences of searched word.
4825  * Uses a direction where to look and a shift from current page.
4826  *
4827  */
4828 static void
4829 jump_to_find_page (EvView *view, EvViewFindDirection direction, gint shift)
4830 {
4831         int n_pages, i;
4832
4833         n_pages = ev_page_cache_get_n_pages (view->page_cache);
4834
4835         for (i = 0; i < n_pages; i++) {
4836                 int has_results;
4837                 int page;
4838
4839                 if (direction == EV_VIEW_FIND_NEXT)
4840                         page = view->current_page + i;
4841                 else
4842                         page = view->current_page - i;
4843                 page += shift;
4844
4845                 if (page >= n_pages) {
4846                         page = page - n_pages;
4847                 }
4848                 if (page < 0)
4849                         page = page + n_pages;
4850
4851                 has_results = ev_document_find_page_has_results
4852                                 (EV_DOCUMENT_FIND (view->document), page);
4853                 if (has_results == -1) {
4854                         break;
4855                 } else if (has_results == 1) {
4856                         ev_page_cache_set_current_page (view->page_cache, page);
4857                         break;
4858                 }
4859         }
4860 }
4861
4862 gboolean
4863 ev_view_can_find_next (EvView *view)
4864 {
4865         if (EV_IS_DOCUMENT_FIND (view->document)) {
4866                 EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
4867                 int i, n_pages;
4868
4869                 n_pages = ev_page_cache_get_n_pages (view->page_cache);
4870                 for (i = 0; i < n_pages; i++) {
4871                         if (ev_document_find_get_n_results (find, i) > 0) {
4872                                 return TRUE;
4873                         }
4874                 }
4875         }
4876
4877         return FALSE;
4878 }
4879
4880 void
4881 ev_view_find_next (EvView *view)
4882 {
4883         int n_results, n_pages;
4884         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
4885
4886         n_results = ev_document_find_get_n_results (find, view->current_page);
4887
4888         n_pages = ev_page_cache_get_n_pages (view->page_cache);
4889
4890         view->find_result++;
4891
4892         if (view->find_result >= n_results) {
4893
4894                 view->find_result = 0;
4895                 jump_to_find_page (view, EV_VIEW_FIND_NEXT, 1);
4896                 jump_to_find_result (view);
4897         } else {
4898                 jump_to_find_result (view);
4899                 gtk_widget_queue_draw (GTK_WIDGET (view));
4900         }
4901 }
4902
4903 gboolean
4904 ev_view_can_find_previous (EvView *view)
4905 {
4906         if (EV_IS_DOCUMENT_FIND (view->document)) {
4907                 EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
4908                 int i, n_pages;
4909
4910                 n_pages = ev_page_cache_get_n_pages (view->page_cache);
4911                 for (i = n_pages - 1; i >= 0; i--) {
4912                         if (ev_document_find_get_n_results (find, i) > 0) {
4913                                 return TRUE;
4914                         }
4915                 }
4916         }
4917
4918         return FALSE;
4919 }
4920 void
4921 ev_view_find_previous (EvView *view)
4922 {
4923         int n_results, n_pages;
4924         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
4925         EvPageCache *page_cache;
4926
4927         page_cache = ev_page_cache_get (view->document);
4928
4929         n_results = ev_document_find_get_n_results (find, view->current_page);
4930
4931         n_pages = ev_page_cache_get_n_pages (page_cache);
4932
4933         view->find_result--;
4934
4935         if (view->find_result < 0) {
4936
4937                 jump_to_find_page (view, EV_VIEW_FIND_PREV, -1);
4938                 view->find_result = ev_document_find_get_n_results (find, view->current_page) - 1;
4939                 jump_to_find_result (view);
4940         } else {
4941                 jump_to_find_result (view);
4942                 gtk_widget_queue_draw (GTK_WIDGET (view));
4943         }
4944 }
4945
4946 void ev_view_search_changed (EvView *view)
4947 {
4948         /* search string has changed, focus on new search result */
4949         view->jump_to_find_result = TRUE;
4950 }
4951
4952 /*** Selections ***/
4953
4954 /* compute_new_selection_rect/text calculates the area currently selected by
4955  * view_rect.  each handles a different mode;
4956  */
4957 static GList *
4958 compute_new_selection_rect (EvView       *view,
4959                             GdkPoint     *start,
4960                             GdkPoint     *stop)
4961 {
4962         GdkRectangle view_rect;
4963         int n_pages, i;
4964         GList *list = NULL;
4965
4966         g_assert (view->selection_mode == EV_VIEW_SELECTION_RECTANGLE);
4967
4968         view_rect.x = MIN (start->x, stop->x);
4969         view_rect.y = MIN (start->y, stop->y);
4970         view_rect.width = MAX (start->x, stop->x) - view_rect.x;
4971         view_rect.width = MAX (start->y, stop->y) - view_rect.y;
4972
4973         n_pages = ev_page_cache_get_n_pages (view->page_cache);
4974
4975         for (i = 0; i < n_pages; i++) {
4976                 GdkRectangle page_area;
4977                 GtkBorder border;
4978
4979                 if (get_page_extents (view, i, &page_area, &border)) {
4980                         GdkRectangle overlap;
4981
4982                         if (gdk_rectangle_intersect (&page_area, &view_rect, &overlap)) {
4983                                 EvViewSelection *selection;
4984
4985                                 selection = g_new0 (EvViewSelection, 1);
4986                                 selection->page = i;
4987                                 view_rect_to_doc_rect (view, &overlap, &page_area,
4988                                                        &(selection->rect));
4989
4990                                 list = g_list_append (list, selection);
4991                         }
4992                 }
4993         }
4994
4995         return list;
4996 }
4997
4998 static gboolean
4999 gdk_rectangle_point_in (GdkRectangle *rectangle,
5000                         GdkPoint     *point)
5001 {
5002         return rectangle->x <= point->x &&
5003                 rectangle->y <= point->y &&
5004                 point->x < rectangle->x + rectangle->width &&
5005                 point->y < rectangle->y + rectangle->height;
5006 }
5007
5008 static GList *
5009 compute_new_selection_text (EvView   *view,
5010                             GdkPoint *start,
5011                             GdkPoint *stop)
5012 {
5013         int n_pages, i, first, last;
5014         GList *list = NULL;
5015         EvViewSelection *selection;
5016         gint width, height;
5017         int start_page, end_page;
5018
5019         g_assert (view->selection_mode == EV_VIEW_SELECTION_TEXT);
5020
5021         n_pages = ev_page_cache_get_n_pages (view->page_cache);
5022
5023         /* First figure out the range of pages the selection
5024          * affects. */
5025         first = n_pages;
5026         last = 0;
5027         if (view->continuous) {
5028                 start_page = 0;
5029                 end_page = n_pages;
5030         } else if (view->dual_page) {
5031                 start_page = view->start_page;
5032                 end_page = view->end_page + 1;
5033         } else {
5034                 start_page = view->current_page;
5035                 end_page = view->current_page + 1;
5036         }
5037
5038         for (i = start_page; i < end_page; i++) {
5039                 GdkRectangle page_area;
5040                 GtkBorder border;
5041
5042                 get_page_extents (view, i, &page_area, &border);
5043                 if (gdk_rectangle_point_in (&page_area, start) ||
5044                     gdk_rectangle_point_in (&page_area, stop)) {
5045                         if (first == n_pages)
5046                                 first = i;
5047                         last = i;
5048                 }
5049
5050         }
5051
5052         /* Now create a list of EvViewSelection's for the affected
5053          * pages.  This could be an empty list, a list of just one
5054          * page or a number of pages.*/
5055         for (i = first; i < last + 1; i++) {
5056                 GdkRectangle page_area;
5057                 GtkBorder border;
5058                 GdkPoint *point;
5059
5060                 ev_page_cache_get_size (view->page_cache, i,
5061                                         view->rotation,
5062                                         1.0, &width, &height);
5063
5064                 selection = g_new0 (EvViewSelection, 1);
5065                 selection->page = i;
5066                 selection->rect.x1 = selection->rect.y1 = 0;
5067                 selection->rect.x2 = width;
5068                 selection->rect.y2 = height;
5069
5070                 get_page_extents (view, i, &page_area, &border);
5071
5072                 if (gdk_rectangle_point_in (&page_area, start))
5073                         point = start;
5074                 else
5075                         point = stop;
5076
5077                 if (i == first)
5078                         view_point_to_doc_point (view, point, &page_area,
5079                                                  &selection->rect.x1,
5080                                                  &selection->rect.y1);
5081
5082                 /* If the selection is contained within just one page,
5083                  * make sure we don't write 'start' into both points
5084                  * in selection->rect. */
5085                 if (first == last)
5086                         point = stop;
5087
5088                 if (i == last)
5089                         view_point_to_doc_point (view, point, &page_area,
5090                                                  &selection->rect.x2,
5091                                                  &selection->rect.y2);
5092
5093                 list = g_list_append (list, selection);
5094         }
5095
5096         return list;
5097 }
5098
5099 /* This function takes the newly calculated list, and figures out which regions
5100  * have changed.  It then queues a redraw approporiately.
5101  */
5102 static void
5103 merge_selection_region (EvView *view,
5104                         GList  *new_list)
5105 {
5106         GList *old_list;
5107         GList *new_list_ptr, *old_list_ptr;
5108
5109         /* Update the selection */
5110         old_list = ev_pixbuf_cache_get_selection_list (view->pixbuf_cache);
5111         g_list_foreach (view->selection_info.selections, (GFunc)selection_free, NULL);
5112         view->selection_info.selections = new_list;
5113         ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, new_list);
5114         g_object_notify (G_OBJECT (view), "has-selection");
5115
5116         new_list_ptr = new_list;
5117         old_list_ptr = old_list;
5118
5119         while (new_list_ptr || old_list_ptr) {
5120                 EvViewSelection *old_sel, *new_sel;
5121                 int cur_page;
5122                 GdkRegion *region = NULL;
5123
5124                 new_sel = (new_list_ptr) ? (new_list_ptr->data) : NULL;
5125                 old_sel = (old_list_ptr) ? (old_list_ptr->data) : NULL;
5126
5127                 /* Assume that the lists are in order, and we run through them
5128                  * comparing them, one page at a time.  We come out with the
5129                  * first page we see. */
5130                 if (new_sel && old_sel) {
5131                         if (new_sel->page < old_sel->page) {
5132                                 new_list_ptr = new_list_ptr->next;
5133                                 old_sel = NULL;
5134                         } else if (new_sel->page > old_sel->page) {
5135                                 old_list_ptr = old_list_ptr->next;
5136                                 new_sel = NULL;
5137                         } else {
5138                                 new_list_ptr = new_list_ptr->next;
5139                                 old_list_ptr = old_list_ptr->next;
5140                         }
5141                 } else if (new_sel) {
5142                         new_list_ptr = new_list_ptr->next;
5143                 } else if (old_sel) {
5144                         old_list_ptr = old_list_ptr->next;
5145                 }
5146
5147                 g_assert (new_sel || old_sel);
5148
5149                 /* is the page we're looking at on the screen?*/
5150                 cur_page = new_sel ? new_sel->page : old_sel->page;
5151                 if (cur_page < view->start_page || cur_page > view->end_page)
5152                         continue;
5153
5154                 /* seed the cache with a new page.  We are going to need the new
5155                  * region too. */
5156                 if (new_sel) {
5157                         GdkRegion *tmp_region = NULL;
5158
5159                         ev_pixbuf_cache_get_selection_surface (view->pixbuf_cache,
5160                                                                cur_page,
5161                                                                view->scale,
5162                                                                &tmp_region);
5163
5164                         if (tmp_region) {
5165                                 new_sel->covered_region = gdk_region_copy (tmp_region);
5166                         }
5167                 }
5168
5169                 /* Now we figure out what needs redrawing */
5170                 if (old_sel && new_sel) {
5171                         if (old_sel->covered_region && new_sel->covered_region) {
5172                                 /* We only want to redraw the areas that have
5173                                  * changed, so we xor the old and new regions
5174                                  * and redraw if it's different */
5175                                 region = gdk_region_copy (old_sel->covered_region);
5176                                 gdk_region_xor (region, new_sel->covered_region);
5177                                 if (gdk_region_empty (region)) {
5178                                         gdk_region_destroy (region);
5179                                         region = NULL;
5180                                 }
5181                         } else if (old_sel->covered_region) {
5182                                 region = gdk_region_copy (old_sel->covered_region);
5183                         } else if (new_sel->covered_region) {
5184                                 region = gdk_region_copy (new_sel->covered_region);
5185                         }
5186                 } else if (old_sel && !new_sel) {
5187                         if (old_sel->covered_region && !gdk_region_empty (old_sel->covered_region)) {
5188                                 region = gdk_region_copy (old_sel->covered_region);
5189                         }
5190                 } else if (!old_sel && new_sel) {
5191                         if (new_sel->covered_region && !gdk_region_empty (new_sel->covered_region)) {
5192                                 region = gdk_region_copy (new_sel->covered_region);
5193                         }
5194                 } else {
5195                         g_assert_not_reached ();
5196                 }
5197
5198                 /* Redraw the damaged region! */
5199                 if (region) {
5200                         GdkRectangle page_area;
5201                         GtkBorder border;
5202
5203                         /* I don't know why but the region is smaller
5204                          * than expected. This hack fixes it, I guess
5205                          * 10 pixels more won't hurt
5206                          */
5207                         gdk_region_shrink (region, -5, -5);
5208
5209                         get_page_extents (view, cur_page, &page_area, &border);
5210                         gdk_region_offset (region,
5211                                            page_area.x + border.left - view->scroll_x,
5212                                            page_area.y + border.top - view->scroll_y);
5213                         gdk_window_invalidate_region (view->layout.bin_window, region, TRUE);
5214                         gdk_region_destroy (region);
5215                 }
5216         }
5217
5218         /* Free the old list, now that we're done with it. */
5219         g_list_foreach (old_list, (GFunc) selection_free, NULL);
5220 }
5221
5222 static void
5223 compute_selections (EvView   *view,
5224                     GdkPoint *start,
5225                     GdkPoint *stop)
5226 {
5227         GList *list;
5228
5229         if (view->selection_mode == EV_VIEW_SELECTION_RECTANGLE)
5230                 list = compute_new_selection_rect (view, start, stop);
5231         else
5232                 list = compute_new_selection_text (view, start, stop);
5233         merge_selection_region (view, list);
5234 }
5235
5236 /* Free's the selection.  It's up to the caller to queue redraws if needed.
5237  */
5238 static void
5239 selection_free (EvViewSelection *selection)
5240 {
5241         if (selection->covered_region)
5242                 gdk_region_destroy (selection->covered_region);
5243         g_free (selection);
5244 }
5245
5246 static void
5247 clear_selection (EvView *view)
5248 {
5249         g_list_foreach (view->selection_info.selections, (GFunc)selection_free, NULL);
5250         view->selection_info.selections = NULL;
5251         view->selection_info.in_selection = FALSE;
5252         if (view->pixbuf_cache)
5253                 ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, NULL);
5254         g_object_notify (G_OBJECT (view), "has-selection");
5255 }
5256
5257
5258 void
5259 ev_view_select_all (EvView *view)
5260 {
5261         int n_pages, i;
5262
5263         /* Disable selection on rotated pages for the 0.4.0 series */
5264         if (view->rotation != 0)
5265                 return;
5266
5267         clear_selection (view);
5268
5269         n_pages = ev_page_cache_get_n_pages (view->page_cache);
5270         for (i = 0; i < n_pages; i++) {
5271                 int width, height;
5272                 EvViewSelection *selection;
5273
5274                 ev_page_cache_get_size (view->page_cache,
5275                                         i,
5276                                         view->rotation,
5277                                         1.0, &width, &height);
5278
5279                 selection = g_new0 (EvViewSelection, 1);
5280                 selection->page = i;
5281                 selection->rect.x1 = selection->rect.y1 = 0;
5282                 selection->rect.x2 = width;
5283                 selection->rect.y2 = height;
5284
5285                 view->selection_info.selections = g_list_append (view->selection_info.selections, selection);
5286         }
5287
5288         ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, view->selection_info.selections);
5289         g_object_notify (G_OBJECT (view), "has-selection");
5290         gtk_widget_queue_draw (GTK_WIDGET (view));
5291 }
5292
5293 gboolean
5294 ev_view_get_has_selection (EvView *view)
5295 {
5296         return view->selection_info.selections != NULL;
5297 }
5298
5299 static char *
5300 get_selected_text (EvView *ev_view)
5301 {
5302         GString *text;
5303         GList *l;
5304         gchar *normalized_text;
5305
5306         text = g_string_new (NULL);
5307
5308         ev_document_doc_mutex_lock ();
5309
5310         for (l = ev_view->selection_info.selections; l != NULL; l = l->next) {
5311                 EvViewSelection *selection = (EvViewSelection *)l->data;
5312                 char *tmp;
5313
5314                 tmp = ev_document_get_text (ev_view->document,
5315                                             selection->page,
5316                                             &selection->rect);
5317                 g_string_append (text, tmp);
5318                 g_free (tmp);
5319         }
5320
5321         ev_document_doc_mutex_unlock ();
5322
5323         normalized_text = g_utf8_normalize (text->str, text->len, G_NORMALIZE_NFKC);
5324         g_string_free (text, TRUE);
5325         return normalized_text;
5326 }
5327
5328 void
5329 ev_view_copy (EvView *ev_view)
5330 {
5331         GtkClipboard *clipboard;
5332         char *text;
5333
5334         if (!ev_document_can_get_text (ev_view->document)) {
5335                 return;
5336         }
5337
5338         text = get_selected_text (ev_view);
5339         clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view),
5340                                               GDK_SELECTION_CLIPBOARD);
5341         gtk_clipboard_set_text (clipboard, text, -1);
5342         g_free (text);
5343 }
5344
5345 static void
5346 ev_view_primary_get_cb (GtkClipboard     *clipboard,
5347                         GtkSelectionData *selection_data,
5348                         guint             info,
5349                         gpointer          data)
5350 {
5351         EvView *ev_view = EV_VIEW (data);
5352         char *text;
5353
5354         if (!ev_document_can_get_text (ev_view->document)) {
5355                 return;
5356         }
5357
5358         text = get_selected_text (ev_view);
5359         if (text) {
5360                 gtk_selection_data_set_text (selection_data, text, -1);
5361                 g_free (text);
5362         }
5363 }
5364
5365 static void
5366 ev_view_primary_clear_cb (GtkClipboard *clipboard,
5367                           gpointer      data)
5368 {
5369         EvView *view = EV_VIEW (data);
5370
5371         clear_selection (view);
5372 }
5373
5374 static void
5375 ev_view_update_primary_selection (EvView *ev_view)
5376 {
5377         GtkClipboard *clipboard;
5378
5379         clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view),
5380                                               GDK_SELECTION_PRIMARY);
5381
5382         if (ev_view->selection_info.selections) {
5383                 if (!gtk_clipboard_set_with_owner (clipboard,
5384                                                    clipboard_targets,
5385                                                    G_N_ELEMENTS (clipboard_targets),
5386                                                    ev_view_primary_get_cb,
5387                                                    ev_view_primary_clear_cb,
5388                                                    G_OBJECT (ev_view)))
5389                         ev_view_primary_clear_cb (clipboard, ev_view);
5390         } else {
5391                 if (gtk_clipboard_get_owner (clipboard) == G_OBJECT (ev_view))
5392                         gtk_clipboard_clear (clipboard);
5393         }
5394 }
5395
5396 /*** Cursor operations ***/
5397
5398 static GdkCursor *
5399 ev_view_create_invisible_cursor(void)
5400 {
5401        GdkBitmap *empty;
5402        GdkColor black = { 0, 0, 0, 0 };
5403        static char bits[] = { 0x00 };
5404
5405        empty = gdk_bitmap_create_from_data (NULL, bits, 1, 1);
5406
5407        return gdk_cursor_new_from_pixmap (empty, empty, &black, &black, 0, 0);
5408 }
5409
5410 static void
5411 ev_view_set_cursor (EvView *view, EvViewCursor new_cursor)
5412 {
5413         GdkCursor *cursor = NULL;
5414         GdkDisplay *display;
5415         GtkWidget *widget;
5416
5417         if (view->cursor == new_cursor) {
5418                 return;
5419         }
5420
5421         widget = gtk_widget_get_toplevel (GTK_WIDGET (view));
5422         display = gtk_widget_get_display (widget);
5423         view->cursor = new_cursor;
5424
5425         switch (new_cursor) {
5426                 case EV_VIEW_CURSOR_NORMAL:
5427                         gdk_window_set_cursor (view->layout.bin_window, NULL);
5428                         break;
5429                 case EV_VIEW_CURSOR_IBEAM:
5430                         cursor = gdk_cursor_new_for_display (display, GDK_XTERM);
5431                         break;
5432                 case EV_VIEW_CURSOR_LINK:
5433                         cursor = gdk_cursor_new_for_display (display, GDK_HAND2);
5434                         break;
5435                 case EV_VIEW_CURSOR_WAIT:
5436                         cursor = gdk_cursor_new_for_display (display, GDK_WATCH);
5437                         break;
5438                 case EV_VIEW_CURSOR_HIDDEN:
5439                         cursor = ev_view_create_invisible_cursor ();
5440                         break;
5441                 case EV_VIEW_CURSOR_DRAG:
5442                         cursor = gdk_cursor_new_for_display (display, GDK_FLEUR);
5443                         break;
5444         }
5445
5446         if (cursor) {
5447                 gdk_window_set_cursor (view->layout.bin_window, cursor);
5448                 gdk_cursor_unref (cursor);
5449                 gdk_flush();
5450         }
5451 }
5452
5453 void
5454 ev_view_hide_cursor (EvView *view)
5455 {
5456        ev_view_set_cursor (view, EV_VIEW_CURSOR_HIDDEN);
5457 }
5458
5459 void
5460 ev_view_show_cursor (EvView *view)
5461 {
5462        ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
5463 }
5464
5465 static void
5466 ev_view_reset_presentation_state (EvView *view)
5467 {
5468         if (!view->presentation ||
5469             view->presentation_state == EV_PRESENTATION_NORMAL)
5470                 return;
5471
5472         view->presentation_state = EV_PRESENTATION_NORMAL;
5473         gdk_window_set_background (view->layout.bin_window,
5474                                    &GTK_WIDGET (view)->style->black);
5475         gtk_widget_queue_draw (GTK_WIDGET (view));
5476 }
5477
5478 gboolean
5479 ev_view_next_page (EvView *view)
5480 {
5481         int page, n_pages;
5482
5483         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
5484
5485         if (!view->page_cache)
5486                 return FALSE;
5487
5488         if (view->presentation &&
5489             (view->presentation_state == EV_PRESENTATION_BLACK ||
5490              view->presentation_state == EV_PRESENTATION_WHITE)) {
5491                 ev_view_reset_presentation_state (view);
5492                 return FALSE;
5493         }
5494
5495         ev_view_presentation_transition_stop (view);
5496         ev_view_reset_presentation_state (view);
5497
5498         page = ev_page_cache_get_current_page (view->page_cache);
5499         n_pages = ev_page_cache_get_n_pages (view->page_cache);
5500
5501         if (view->dual_page && !view->presentation)
5502                 page = page + 2;
5503         else
5504                 page = page + 1;
5505
5506         if (page < n_pages) {
5507                 ev_page_cache_set_current_page (view->page_cache, page);
5508                 return TRUE;
5509         } else if (view->presentation && page == n_pages) {
5510                 view->presentation_state = EV_PRESENTATION_END;
5511                 gtk_widget_queue_draw (GTK_WIDGET (view));
5512                 return TRUE;
5513         } else if (view->dual_page && page == n_pages) {
5514                 ev_page_cache_set_current_page (view->page_cache, page - 1);
5515                 return TRUE;
5516         } else {
5517                 return FALSE;
5518         }
5519 }
5520
5521 gboolean
5522 ev_view_previous_page (EvView *view)
5523 {
5524         int page;
5525
5526         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
5527
5528         if (!view->page_cache)
5529                 return FALSE;
5530
5531         if (view->presentation &&
5532             view->presentation_state == EV_PRESENTATION_END) {
5533                 ev_view_reset_presentation_state (view);
5534                 return TRUE;
5535         }
5536
5537         if (view->presentation &&
5538             (view->presentation_state == EV_PRESENTATION_BLACK ||
5539              view->presentation_state == EV_PRESENTATION_WHITE)) {
5540                 ev_view_reset_presentation_state (view);
5541                 return FALSE;
5542         }
5543
5544         ev_view_reset_presentation_state (view);
5545
5546         page = ev_page_cache_get_current_page (view->page_cache);
5547
5548         if (view->dual_page && !view->presentation)
5549                 page = page - 2;
5550         else
5551                 page = page - 1;
5552
5553         if (page >= 0) {
5554                 ev_page_cache_set_current_page (view->page_cache, page);
5555                 return TRUE;
5556         } else if (ev_view_get_dual_page (view) && page == -1) {
5557                 ev_page_cache_set_current_page (view->page_cache, 0);
5558                 return TRUE;
5559         } else {
5560                 return FALSE;
5561         }
5562 }
5563
5564 /*** Enum description for usage in signal ***/
5565
5566 GType
5567 ev_sizing_mode_get_type (void)
5568 {
5569   static GType etype = 0;
5570   if (etype == 0) {
5571     static const GEnumValue values[] = {
5572       { EV_SIZING_FIT_WIDTH, "EV_SIZING_FIT_WIDTH", "fit-width" },
5573       { EV_SIZING_BEST_FIT, "EV_SIZING_BEST_FIT", "best-fit" },
5574       { EV_SIZING_FREE, "EV_SIZING_FREE", "free" },
5575       { 0, NULL, NULL }
5576     };
5577     etype = g_enum_register_static ("EvSizingMode", values);
5578   }
5579   return etype;
5580 }
5581
5582 GType
5583 ev_scroll_type_get_type (void)
5584 {
5585   static GType etype = 0;
5586   if (etype == 0) {
5587     static const GEnumValue values[] = {
5588       { EV_SCROLL_PAGE_FORWARD, "EV_SCROLL_PAGE_FORWARD", "scroll-page-forward" },
5589       { EV_SCROLL_PAGE_BACKWARD, "EV_SCROLL_PAGE_BACKWARD", "scroll-page-backward" },
5590       { EV_SCROLL_STEP_FORWARD, "EV_SCROLL_STEP_FORWARD", "scroll-step-forward" },
5591       { EV_SCROLL_STEP_FORWARD, "EV_SCROLL_STEP_FORWARD", "scroll-step-forward" },
5592       { EV_SCROLL_STEP_UP, "EV_SCROLL_STEP_UP", "scroll-step-up" },
5593       { EV_SCROLL_STEP_DOWN, "EV_SCROLL_STEP_DOWN", "scroll-step-down" },
5594       { 0, NULL, NULL }
5595     };
5596     etype = g_enum_register_static ("EvScrollType", values);
5597   }
5598   return etype;
5599 }