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_FIND_STATUS,
  56         PROP_CONTINUOUS,
  57         PROP_DUAL_PAGE,
  58         PROP_FULLSCREEN,
  59         PROP_PRESENTATION,
  60         PROP_SIZING_MODE,
  61         PROP_ZOOM,
  62         PROP_ROTATION,
  63         PROP_HAS_SELECTION,
  64 };
  65
  66 enum {
  67         SIGNAL_BINDING_ACTIVATED,
  68         SIGNAL_ZOOM_INVALID,
  69         SIGNAL_HANDLE_LINK,
  70         SIGNAL_EXTERNAL_LINK,
  71         SIGNAL_POPUP_MENU,
  72         N_SIGNALS,
  73 };
  74
  75 enum {
  76         TARGET_DND_URI,
  77         TARGET_DND_TEXT,
  78         TARGET_DND_IMAGE
  79 };
  80
  81 enum {
  82         TARGET_STRING,
  83         TARGET_TEXT,
  84         TARGET_COMPOUND_TEXT,
  85         TARGET_UTF8_STRING,
  86         TARGET_TEXT_BUFFER_CONTENTS
  87 };
  88
  89 static const GtkTargetEntry clipboard_targets[] = {
  90         { "STRING", 0, TARGET_STRING },
  91         { "TEXT",   0, TARGET_TEXT },
  92         { "COMPOUND_TEXT", 0, TARGET_COMPOUND_TEXT },
  93         { "UTF8_STRING", 0, TARGET_UTF8_STRING },
  94 };
  95
  96 static const GtkTargetEntry view_drop_targets[] = {
  97         { "text/uri-list", 0, 0 }
  98 };
  99
 100 static guint signals[N_SIGNALS];
 101
 102 typedef enum {
 103         EV_VIEW_FIND_NEXT,
 104         EV_VIEW_FIND_PREV
 105 } EvViewFindDirection;
 106
 107 #define ZOOM_IN_FACTOR  1.2
 108 #define ZOOM_OUT_FACTOR (1.0/ZOOM_IN_FACTOR)
 109
 110 #define MIN_SCALE 0.05409
 111 #define MAX_SCALE 4.0
 112
 113 #define SCROLL_TIME 150
 114
 115 /*** Scrolling ***/
 116 static void       scroll_to_current_page                     (EvView *view,
 117                                                               GtkOrientation orientation);
 118 static void       ev_view_set_scroll_adjustments             (GtkLayout          *layout,
 119                                                               GtkAdjustment      *hadjustment,
 120                                                               GtkAdjustment      *vadjustment);
 121 static void       view_update_range_and_current_page         (EvView             *view);
 122 static void       set_scroll_adjustment                      (EvView             *view,
 123                                                               GtkOrientation      orientation,
 124                                                               GtkAdjustment      *adjustment);
 125 static void       add_scroll_binding_keypad                  (GtkBindingSet      *binding_set,
 126                                                               guint               keyval,
 127                                                               GdkModifierType modifiers,
 128                                                               EvScrollType       scroll,
 129                                                               gboolean            horizontal);
 130 static void       ensure_rectangle_is_visible                (EvView             *view,
 131                                                               GdkRectangle       *rect);
 132
 133 /*** Geometry computations ***/
 134 static void       compute_border                             (EvView             *view,
 135                                                               int                 width,
 136                                                               int                 height,
 137                                                               GtkBorder          *border);
 138 static void       get_page_y_offset                          (EvView *view,
 139                                                               int page,
 140                                                               double zoom,
 141                                                               int *y_offset);
 142 static gboolean   get_page_extents                           (EvView             *view,
 143                                                               gint                page,
 144                                                               GdkRectangle       *page_area,
 145                                                               GtkBorder          *border);
 146 static void       view_rect_to_doc_rect                      (EvView             *view,
 147                                                               GdkRectangle       *view_rect,
 148                                                               GdkRectangle       *page_area,
 149                                                               EvRectangle        *doc_rect);
 150 static void       doc_rect_to_view_rect                      (EvView             *view,
 151                                                               int                 page,
 152                                                               EvRectangle        *doc_rect,
 153                                                               GdkRectangle       *view_rect);
 154 static void       find_page_at_location                      (EvView             *view,
 155                                                               gdouble             x,
 156                                                               gdouble             y,
 157                                                               gint               *page,
 158                                                               gint               *x_offset,
 159                                                               gint               *y_offset);
 160 static gboolean  doc_point_to_view_point                     (EvView             *view,
 161                                                               int                 page,
 162                                                               EvPoint            *doc_point,
 163                                                               GdkPoint           *view_point);
 164 /*** Hyperrefs ***/
 165 static EvLink *   ev_view_get_link_at_location               (EvView             *view,
 166                                                               gdouble             x,
 167                                                               gdouble             y);
 168 static char*      tip_from_link                              (EvView             *view,
 169                                                               EvLink             *link);
 170 /*** Forms ***/
 171 static EvFormField *ev_view_get_form_field_at_location       (EvView             *view,
 172                                                                gdouble            x,
 173                                                                gdouble            y);
 174
 175 /*** GtkWidget implementation ***/
 176 static void       ev_view_size_request_continuous_dual_page  (EvView             *view,
 177                                                               GtkRequisition     *requisition);
 178 static void       ev_view_size_request_continuous            (EvView             *view,
 179                                                               GtkRequisition     *requisition);
 180 static void       ev_view_size_request_dual_page             (EvView             *view,
 181                                                               GtkRequisition     *requisition);
 182 static void       ev_view_size_request_single_page           (EvView             *view,
 183                                                               GtkRequisition     *requisition);
 184 static void       ev_view_size_request                       (GtkWidget          *widget,
 185                                                               GtkRequisition     *requisition);
 186 static void       ev_view_size_allocate                      (GtkWidget          *widget,
 187                                                               GtkAllocation      *allocation);
 188 static void       ev_view_realize                            (GtkWidget          *widget);
 189 static gboolean   ev_view_scroll_event                       (GtkWidget          *widget,
 190                                                               GdkEventScroll     *event);
 191 static gboolean   ev_view_expose_event                       (GtkWidget          *widget,
 192                                                               GdkEventExpose     *event);
 193 static gboolean   ev_view_popup_menu                         (GtkWidget          *widget);
 194 static gboolean   ev_view_button_press_event                 (GtkWidget          *widget,
 195                                                               GdkEventButton     *event);
 196 static gboolean   ev_view_motion_notify_event                (GtkWidget          *widget,
 197                                                               GdkEventMotion     *event);
 198 static gboolean   ev_view_button_release_event               (GtkWidget          *widget,
 199                                                               GdkEventButton     *event);
 200 static gboolean   ev_view_enter_notify_event                 (GtkWidget          *widget,
 201                                                               GdkEventCrossing   *event);
 202 static gboolean   ev_view_leave_notify_event                 (GtkWidget          *widget,
 203                                                               GdkEventCrossing   *event);
 204 static void       ev_view_style_set                          (GtkWidget          *widget,
 205                                                               GtkStyle           *old_style);
 206 static void       ev_view_remove_all                         (EvView             *view);
 207
 208 static AtkObject *ev_view_get_accessible                     (GtkWidget *widget);
 209
 210 /*** Drawing ***/
 211 static guint32    ev_gdk_color_to_rgb                        (const GdkColor     *color);
 212 static void       draw_rubberband                            (GtkWidget          *widget,
 213                                                               GdkWindow          *window,
 214                                                               const GdkRectangle *rect,
 215                                                               guchar              alpha);
 216 static void       highlight_find_results                     (EvView             *view,
 217                                                               int                 page);
 218 static void       draw_one_page                              (EvView             *view,
 219                                                               gint                page,
 220                                                               GdkRectangle       *page_area,
 221                                                               GtkBorder          *border,
 222                                                               GdkRectangle       *expose_area,
 223                                                               gboolean           *page_ready);
 224 static void       draw_loading_text                          (EvView             *view,
 225                                                               GdkRectangle       *page_area,
 226                                                               GdkRectangle       *expose_area);
 227
 228 /*** Callbacks ***/
 229 static void       find_changed_cb                            (EvDocument         *document,
 230                                                               int                 page,
 231                                                               EvView             *view);
 232 static void       job_finished_cb                            (EvPixbufCache      *pixbuf_cache,
 233                                                               GdkRegion          *region,
 234                                                               EvView             *view);
 235 static void       page_changed_cb                            (EvPageCache        *page_cache,
 236                                                               int                 new_page,
 237                                                               EvView             *view);
 238 static void       on_adjustment_value_changed                (GtkAdjustment      *adjustment,
 239                                                               EvView             *view);
 240
 241 /*** GObject ***/
 242 static void       ev_view_finalize                           (GObject            *object);
 243 static void       ev_view_destroy                            (GtkObject          *object);
 244 static void       ev_view_set_property                       (GObject            *object,
 245                                                               guint               prop_id,
 246                                                               const GValue       *value,
 247                                                               GParamSpec         *pspec);
 248 static void       ev_view_get_property                       (GObject            *object,
 249                                                               guint               prop_id,
 250                                                               GValue             *value,
 251                                                               GParamSpec         *pspec);
 252 static void       ev_view_class_init                         (EvViewClass        *class);
 253 static void       ev_view_init                               (EvView             *view);
 254
 255 /*** Zoom and sizing ***/
 256 static double   zoom_for_size_fit_width                      (int doc_width,
 257                                                               int doc_height,
 258                                                               int target_width,
 259                                                               int target_height,
 260                                                               int vsb_width);
 261 static double   zoom_for_size_fit_height                     (int doc_width,
 262                                                               int doc_height,
 263                                                               int target_width,
 264                                                               int target_height,
 265                                                               int vsb_height);
 266 static double   zoom_for_size_best_fit                       (int doc_width,
 267                                                               int doc_height,
 268                                                               int target_width,
 269                                                               int target_height,
 270                                                               int vsb_width,
 271                                                               int hsb_width);
 272 static void     ev_view_zoom_for_size_presentation           (EvView *view,
 273                                                               int     width,
 274                                                               int     height);
 275 static void     ev_view_zoom_for_size_continuous_and_dual_page (EvView *view,
 276                                                                 int     width,
 277                                                                 int     height,
 278                                                                 int     vsb_width,
 279                                                                 int     hsb_height);
 280 static void     ev_view_zoom_for_size_continuous               (EvView *view,
 281                                                                 int     width,
 282                                                                 int     height,
 283                                                                 int     vsb_width,
 284                                                                 int     hsb_height);
 285 static void     ev_view_zoom_for_size_dual_page                (EvView *view,
 286                                                                 int     width,
 287                                                                 int     height,
 288                                                                 int     vsb_width,
 289                                                                 int     hsb_height);
 290 static void     ev_view_zoom_for_size_single_page              (EvView *view,
 291                                                                 int     width,
 292                                                                 int     height,
 293                                                                 int     vsb_width,
 294                                                                 int     hsb_height);
 295 /*** Cursors ***/
 296 static GdkCursor* ev_view_create_invisible_cursor            (void);
 297 static void       ev_view_set_cursor                         (EvView             *view,
 298                                                               EvViewCursor        new_cursor);
 299 static void       ev_view_handle_cursor_over_xy              (EvView *view,
 300                                                               gint x,
 301                                                               gint y);
 302
 303 /*** Find ***/
 304 static void       update_find_status_message                 (EvView             *view,
 305                                                               gboolean            this_page);
 306 static void       ev_view_set_find_status                    (EvView             *view,
 307                                                               const char         *message);
 308 static void       jump_to_find_result                        (EvView             *view);
 309 static void       jump_to_find_page                          (EvView             *view,
 310                                                               EvViewFindDirection direction,
 311                                                               gint                shift);
 312
 313 /*** Selection ***/
 314 static void       compute_selections                         (EvView             *view,
 315                                                               GdkPoint           *start,
 316                                                               GdkPoint           *stop);
 317 static void       clear_selection                            (EvView             *view);
 318 static void       selection_free                             (EvViewSelection    *selection);
 319 static char*      get_selected_text                          (EvView             *ev_view);
 320 static void       ev_view_primary_get_cb                     (GtkClipboard       *clipboard,
 321                                                               GtkSelectionData   *selection_data,
 322                                                               guint               info,
 323                                                               gpointer            data);
 324 static void       ev_view_primary_clear_cb                   (GtkClipboard       *clipboard,
 325                                                               gpointer            data);
 326 static void       ev_view_update_primary_selection           (EvView             *ev_view);
 327
 328 /*** Presentation ***/
 329 static void       ev_view_presentation_transition_start      (EvView             *ev_view);
 330 static void       ev_view_presentation_transition_stop       (EvView             *ev_view);
 331
 332
 333 G_DEFINE_TYPE (EvView, ev_view, GTK_TYPE_LAYOUT)
 334
 335 static void
 336 scroll_to_current_page (EvView *view, GtkOrientation orientation)
 337 {
 338         GdkPoint view_point;
 339
 340         if (view->document == NULL) {
 341                 return;
 342         }
 343
 344         doc_point_to_view_point (view, view->current_page, &view->pending_point, &view_point);
 345
 346         if (orientation == GTK_ORIENTATION_VERTICAL) {
 347                 view->pending_point.y = 0;
 348         } else {
 349                 view->pending_point.x = 0;
 350         }
 351
 352         if (orientation == GTK_ORIENTATION_VERTICAL) {
 353                 if (view->continuous) {
 354                         gtk_adjustment_clamp_page (view->vadjustment,
 355                                                    view_point.y - view->spacing / 2,
 356                                                    view_point.y + view->vadjustment->page_size);
 357                 } else {
 358                         gtk_adjustment_set_value (view->vadjustment,
 359                                                   CLAMP (view_point.y,
 360                                                   view->vadjustment->lower,
 361                                                   view->vadjustment->upper -
 362                                                   view->vadjustment->page_size));
 363                 }
 364         } else {
 365                 if (view->dual_page) {
 366                         gtk_adjustment_clamp_page (view->hadjustment,
 367                                                    view_point.x,
 368                                                    view_point.x + view->hadjustment->page_size);
 369                 } else {
 370                         gtk_adjustment_set_value (view->hadjustment,
 371                                                   CLAMP (view_point.x,
 372                                                   view->hadjustment->lower,
 373                                                   view->hadjustment->upper -
 374                                                   view->hadjustment->page_size));
 375                 }
 376         }
 377 }
 378
 379 static void
 380 view_set_adjustment_values (EvView         *view,
 381                             GtkOrientation  orientation)
 382 {
 383         GtkWidget *widget = GTK_WIDGET (view);
 384         GtkAdjustment *adjustment;
 385         int requisition;
 386         int allocation;
 387
 388         double factor;
 389         gint new_value;
 390
 391         if (orientation == GTK_ORIENTATION_HORIZONTAL)  {
 392                 requisition = widget->requisition.width;
 393                 allocation = widget->allocation.width;
 394                 adjustment = view->hadjustment;
 395         } else {
 396                 requisition = widget->requisition.height;
 397                 allocation = widget->allocation.height;
 398                 adjustment = view->vadjustment;
 399         }
 400
 401         if (!adjustment)
 402                 return;
 403
 404         factor = 1.0;
 405         switch (view->pending_scroll) {
 406                 case SCROLL_TO_KEEP_POSITION:
 407                 case SCROLL_TO_FIND_LOCATION:
 408                         factor = (adjustment->value) / adjustment->upper;
 409                         break;
 410                 case SCROLL_TO_PAGE_POSITION:
 411                         break;
 412                 case SCROLL_TO_CENTER:
 413                         factor = (adjustment->value + adjustment->page_size * 0.5) / adjustment->upper;
 414                         break;
 415         }
 416
 417         adjustment->page_size = allocation;
 418         adjustment->step_increment = allocation * 0.1;
 419         adjustment->page_increment = allocation * 0.9;
 420         adjustment->lower = 0;
 421         adjustment->upper = MAX (allocation, requisition);
 422
 423         /*
 424          * We add 0.5 to the values before to average out our rounding errors.
 425          */
 426         switch (view->pending_scroll) {
 427                 case SCROLL_TO_KEEP_POSITION:
 428                 case SCROLL_TO_FIND_LOCATION:
 429                         new_value = CLAMP (adjustment->upper * factor + 0.5, 0, adjustment->upper - adjustment->page_size);
 430                         gtk_adjustment_set_value (adjustment, (int)new_value);
 431                         break;
 432                 case SCROLL_TO_PAGE_POSITION:
 433                         scroll_to_current_page (view, orientation);
 434                         break;
 435                 case SCROLL_TO_CENTER:
 436                         new_value = CLAMP (adjustment->upper * factor - adjustment->page_size * 0.5 + 0.5,
 437                                            0, adjustment->upper - adjustment->page_size);
 438                         gtk_adjustment_set_value (adjustment, (int)new_value);
 439                         break;
 440         }
 441
 442         gtk_adjustment_changed (adjustment);
 443 }
 444
 445 static void
 446 view_update_range_and_current_page (EvView *view)
 447 {
 448         gint current_page;
 449         gint best_current_page = -1;
 450
 451         /* Presentation trumps all other modes */
 452         if (view->presentation) {
 453                 view->start_page = view->current_page;
 454                 view->end_page = view->current_page;
 455         } else if (view->continuous) {
 456                 GdkRectangle current_area, unused, page_area;
 457                 GtkBorder border;
 458                 gboolean found = FALSE;
 459                 gint area_max = -1, area;
 460                 int i;
 461
 462                 if (!(view->vadjustment && view->hadjustment))
 463                         return;
 464
 465                 current_area.x = view->hadjustment->value;
 466                 current_area.width = view->hadjustment->upper;
 467                 current_area.y = view->vadjustment->value;
 468                 current_area.height = view->vadjustment->page_size;
 469
 470                 for (i = 0; i < ev_page_cache_get_n_pages (view->page_cache); i++) {
 471
 472                         get_page_extents (view, i, &page_area, &border);
 473
 474                         if (gdk_rectangle_intersect (&current_area, &page_area, &unused)) {
 475                                 area = unused.width * unused.height;
 476
 477                                 if (!found) {
 478                                         area_max = area;
 479                                         view->start_page = i;
 480                                         found = TRUE;
 481                                         best_current_page = i;
 482                                 }
 483                                 if (area > area_max) {
 484                                         best_current_page = (area == area_max) ? MIN (i, best_current_page) : i;
 485                                         area_max = area;
 486                                 }
 487
 488                                 view->end_page = i;
 489                         } else if (found) {
 490                                 break;
 491                         }
 492                 }
 493
 494         } else if (view->dual_page) {
 495                 if (view->current_page % 2 == ev_page_cache_get_dual_even_left (view->page_cache)) {
 496                         view->start_page = view->current_page;
 497                         if (view->current_page + 1 < ev_page_cache_get_n_pages (view->page_cache))
 498                                 view->end_page = view->start_page + 1;
 499                         else
 500                                 view->end_page = view->start_page;
 501                 } else {
 502                         if (view->current_page < 1)
 503                                 view->start_page = view->current_page;
 504                         else
 505                                 view->start_page = view->current_page - 1;
 506                         view->end_page = view->current_page;
 507                 }
 508         } else {
 509                 view->start_page = view->current_page;
 510                 view->end_page = view->current_page;
 511         }
 512
 513         best_current_page = MAX (best_current_page, view->start_page);
 514         current_page = ev_page_cache_get_current_page (view->page_cache);
 515
 516         if ((current_page != best_current_page) && (view->pending_scroll == SCROLL_TO_KEEP_POSITION)) {
 517                 view->current_page = best_current_page;
 518                 ev_page_cache_set_current_page (view->page_cache, best_current_page);
 519         }
 520
 521         ev_pixbuf_cache_set_page_range (view->pixbuf_cache,
 522                                         view->start_page,
 523                                         view->end_page,
 524                                         view->rotation,
 525                                         view->scale,
 526                                         view->selection_info.selections);
 527 }
 528
 529 static void
 530 set_scroll_adjustment (EvView *view,
 531                        GtkOrientation  orientation,
 532                        GtkAdjustment  *adjustment)
 533 {
 534         GtkAdjustment **to_set;
 535
 536         if (orientation == GTK_ORIENTATION_HORIZONTAL)
 537                 to_set = &view->hadjustment;
 538         else
 539                 to_set = &view->vadjustment;
 540
 541         if (*to_set != adjustment) {
 542                 if (*to_set) {
 543                         g_signal_handlers_disconnect_by_func (*to_set,
 544                                                               (gpointer) on_adjustment_value_changed,
 545                                                               view);
 546                         g_object_unref (*to_set);
 547                 }
 548
 549                 *to_set = adjustment;
 550                 view_set_adjustment_values (view, orientation);
 551
 552                 if (*to_set) {
 553                         g_object_ref (*to_set);
 554                         g_signal_connect (*to_set, "value_changed",
 555                                           G_CALLBACK (on_adjustment_value_changed), view);
 556                 }
 557         }
 558 }
 559
 560 static void
 561 ev_view_set_scroll_adjustments (GtkLayout      *layout,
 562                                 GtkAdjustment  *hadjustment,
 563                                 GtkAdjustment  *vadjustment)
 564 {
 565         EvView *view = EV_VIEW (layout);
 566
 567         set_scroll_adjustment (view, GTK_ORIENTATION_HORIZONTAL, hadjustment);
 568         set_scroll_adjustment (view, GTK_ORIENTATION_VERTICAL, vadjustment);
 569
 570         on_adjustment_value_changed (NULL, view);
 571 }
 572
 573 static void
 574 add_scroll_binding_keypad (GtkBindingSet  *binding_set,
 575                            guint           keyval,
 576                            GdkModifierType modifiers,
 577                            EvScrollType    scroll,
 578                            gboolean        horizontal)
 579 {
 580   guint keypad_keyval = keyval - GDK_Left + GDK_KP_Left;
 581
 582   gtk_binding_entry_add_signal (binding_set, keyval, modifiers,
 583                                 "binding_activated", 2,
 584                                 EV_TYPE_SCROLL_TYPE, scroll,
 585                                 G_TYPE_BOOLEAN, horizontal);
 586   gtk_binding_entry_add_signal (binding_set, keypad_keyval, modifiers,
 587                                 "binding_activated", 2,
 588                                 EV_TYPE_SCROLL_TYPE, scroll,
 589                                 G_TYPE_BOOLEAN, horizontal);
 590 }
 591
 592 void
 593 ev_view_scroll (EvView        *view,
 594                 EvScrollType   scroll,
 595                 gboolean horizontal)
 596 {
 597         GtkAdjustment *adjustment;
 598         double value, increment;
 599         gboolean first_page = FALSE;
 600         gboolean last_page = FALSE;
 601
 602         view->jump_to_find_result = FALSE;
 603
 604         if (view->presentation || view->sizing_mode == EV_SIZING_BEST_FIT) {
 605                 switch (scroll) {
 606                         case EV_SCROLL_PAGE_BACKWARD:
 607                         case EV_SCROLL_STEP_BACKWARD:
 608                                 ev_view_previous_page (view);
 609                                 break;
 610                         case EV_SCROLL_PAGE_FORWARD:
 611                         case EV_SCROLL_STEP_FORWARD:
 612                                 ev_view_next_page (view);
 613                                 break;
 614                         default:
 615                                 break;
 616                 }
 617                 return;
 618         }
 619
 620         /* Assign values for increment and vertical adjustment */
 621         adjustment = horizontal ? view->hadjustment : view->vadjustment;
 622         increment = adjustment->page_size * 0.75;
 623         value = adjustment->value;
 624
 625         /* Assign boolean for first and last page */
 626         if (view->current_page == 0)
 627                 first_page = TRUE;
 628         if (view->current_page == ev_page_cache_get_n_pages (view->page_cache) - 1)
 629                 last_page = TRUE;
 630
 631         switch (scroll) {
 632                 case EV_SCROLL_PAGE_BACKWARD:
 633                         /* Do not jump backwards if at the first page */
 634                         if (value == (adjustment->lower) && first_page) {
 635                                 /* Do nothing */
 636                                 /* At the top of a page, assign the upper bound limit of previous page */
 637                         } else if (value == (adjustment->lower)) {
 638                                 value = adjustment->upper - adjustment->page_size;
 639                                 ev_view_previous_page (view);
 640                                 /* Jump to the top */
 641                         } else {
 642                                 value = MAX (value - increment, adjustment->lower);
 643                         }
 644                         break;
 645                 case EV_SCROLL_PAGE_FORWARD:
 646                         /* Do not jump forward if at the last page */
 647                         if (value == (adjustment->upper - adjustment->page_size) && last_page) {
 648                                 /* Do nothing */
 649                         /* At the bottom of a page, assign the lower bound limit of next page */
 650                         } else if (value == (adjustment->upper - adjustment->page_size)) {
 651                                 value = 0;
 652                                 ev_view_next_page (view);
 653                         /* Jump to the bottom */
 654                         } else {
 655                                 value = MIN (value + increment, adjustment->upper - adjustment->page_size);
 656                         }
 657                         break;
 658                 case EV_SCROLL_STEP_BACKWARD:
 659                         value -= adjustment->step_increment;
 660                         break;
 661                 case EV_SCROLL_STEP_FORWARD:
 662                         value += adjustment->step_increment;
 663                         break;
 664                 case EV_SCROLL_STEP_DOWN:
 665                         value -= adjustment->step_increment / 10;
 666                         break;
 667                 case EV_SCROLL_STEP_UP:
 668                         value += adjustment->step_increment / 10;
 669                         break;
 670                 default:
 671                         break;
 672         }
 673
 674         value = CLAMP (value, adjustment->lower,
 675                        adjustment->upper - adjustment->page_size);
 676
 677         gtk_adjustment_set_value (adjustment, value);
 678 }
 679
 680 #define MARGIN 5
 681
 682 static void
 683 ensure_rectangle_is_visible (EvView *view, GdkRectangle *rect)
 684 {
 685         GtkWidget *widget = GTK_WIDGET (view);
 686         GtkAdjustment *adjustment;
 687         int value;
 688
 689         view->pending_scroll = SCROLL_TO_FIND_LOCATION;
 690
 691         adjustment = view->vadjustment;
 692
 693         if (rect->y < adjustment->value) {
 694                 value = MAX (adjustment->lower, rect->y - MARGIN);
 695                 gtk_adjustment_set_value (view->vadjustment, value);
 696         } else if (rect->y + rect->height >
 697                    adjustment->value + widget->allocation.height) {
 698                 value = MIN (adjustment->upper, rect->y + rect->height -
 699                              widget->allocation.height + MARGIN);
 700                 gtk_adjustment_set_value (view->vadjustment, value);
 701         }
 702
 703         adjustment = view->hadjustment;
 704
 705         if (rect->x < adjustment->value) {
 706                 value = MAX (adjustment->lower, rect->x - MARGIN);
 707                 gtk_adjustment_set_value (view->hadjustment, value);
 708         } else if (rect->x + rect->height >
 709                    adjustment->value + widget->allocation.width) {
 710                 value = MIN (adjustment->upper, rect->x + rect->width -
 711                              widget->allocation.width + MARGIN);
 712                 gtk_adjustment_set_value (view->hadjustment, value);
 713         }
 714
 715         gtk_widget_queue_resize (GTK_WIDGET (view));
 716 }
 717
 718 /*** Geometry computations ***/
 719
 720 static void
 721 compute_border (EvView *view, int width, int height, GtkBorder *border)
 722 {
 723         if (view->presentation) {
 724                 border->left = 0;
 725                 border->right = 0;
 726                 border->top = 0;
 727                 border->bottom = 0;
 728         } else {
 729                 ev_document_misc_get_page_border_size (width, height, border);
 730         }
 731 }
 732
 733 static void
 734 get_page_y_offset (EvView *view, int page, double zoom, int *y_offset)
 735 {
 736         int max_width, offset;
 737         GtkBorder border;
 738
 739         g_return_if_fail (y_offset != NULL);
 740
 741         ev_page_cache_get_max_width (view->page_cache, view->rotation, zoom, &max_width);
 742
 743         compute_border (view, max_width, max_width, &border);
 744
 745         if (view->dual_page) {
 746                 ev_page_cache_get_height_to_page (view->page_cache, page,
 747                                                   view->rotation, zoom, NULL, &offset);
 748                 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);
 749         } else {
 750                 ev_page_cache_get_height_to_page (view->page_cache, page,
 751                                                   view->rotation, zoom, &offset, NULL);
 752                 offset += (page + 1) * view->spacing + page * (border.top + border.bottom);
 753         }
 754
 755         *y_offset = offset;
 756         return;
 757 }
 758
 759 static gboolean
 760 get_page_extents (EvView       *view,
 761                   gint          page,
 762                   GdkRectangle *page_area,
 763                   GtkBorder    *border)
 764 {
 765         GtkWidget *widget;
 766         int width, height;
 767
 768         widget = GTK_WIDGET (view);
 769
 770         /* Get the size of the page */
 771         ev_page_cache_get_size (view->page_cache, page,
 772                                 view->rotation,
 773                                 view->scale,
 774                                 &width, &height);
 775         compute_border (view, width, height, border);
 776         page_area->width = width + border->left + border->right;
 777         page_area->height = height + border->top + border->bottom;
 778
 779         if (view->presentation) {
 780                 page_area->x = (MAX (0, widget->allocation.width - width))/2;
 781                 page_area->y = (MAX (0, widget->allocation.height - height))/2;
 782         } else if (view->continuous) {
 783                 gint max_width;
 784                 gint x, y;
 785
 786                 ev_page_cache_get_max_width (view->page_cache, view->rotation,
 787                                              view->scale, &max_width);
 788                 max_width = max_width + border->left + border->right;
 789                 /* Get the location of the bounding box */
 790                 if (view->dual_page) {
 791                         x = view->spacing + ((page % 2 == ev_page_cache_get_dual_even_left (view->page_cache)) ? 0 : 1) * (max_width + view->spacing);
 792                         x = x + MAX (0, widget->allocation.width - (max_width * 2 + view->spacing * 3)) / 2;
 793                         if (page % 2 == ev_page_cache_get_dual_even_left (view->page_cache))
 794                                 x = x + (max_width - width - border->left - border->right);
 795                 } else {
 796                         x = view->spacing;
 797                         x = x + MAX (0, widget->allocation.width - (width + view->spacing * 2)) / 2;
 798                 }
 799
 800                 get_page_y_offset (view, page, view->scale, &y);
 801
 802                 page_area->x = x;
 803                 page_area->y = y;
 804         } else {
 805                 gint x, y;
 806                 if (view->dual_page) {
 807                         gint width_2, height_2;
 808                         gint max_width = width;
 809                         gint max_height = height;
 810                         GtkBorder overall_border;
 811                         gint other_page;
 812
 813                         other_page = (page % 2 == ev_page_cache_get_dual_even_left (view->page_cache)) ? page + 1: page - 1;
 814
 815                         /* First, we get the bounding box of the two pages */
 816                         if (other_page < ev_page_cache_get_n_pages (view->page_cache)
 817                             && (0 <= other_page)) {
 818                                 ev_page_cache_get_size (view->page_cache,
 819                                                         other_page,
 820                                                         view->rotation,
 821                                                         view->scale,
 822                                                         &width_2, &height_2);
 823                                 if (width_2 > width)
 824                                         max_width = width_2;
 825                                 if (height_2 > height)
 826                                         max_height = height_2;
 827                         }
 828                         compute_border (view, max_width, max_height, &overall_border);
 829
 830                         /* Find the offsets */
 831                         x = view->spacing;
 832                         y = view->spacing;
 833
 834                         /* Adjust for being the left or right page */
 835                         if (page % 2 == ev_page_cache_get_dual_even_left (view->page_cache))
 836                                 x = x + max_width - width;
 837                         else
 838                                 x = x + (max_width + overall_border.left + overall_border.right) + view->spacing;
 839
 840                         y = y + (max_height - height)/2;
 841
 842                         /* Adjust for extra allocation */
 843                         x = x + MAX (0, widget->allocation.width -
 844                                      ((max_width + overall_border.left + overall_border.right) * 2 + view->spacing * 3))/2;
 845                         y = y + MAX (0, widget->allocation.height - (height + view->spacing * 2))/2;
 846                 } else {
 847                         x = view->spacing;
 848                         y = view->spacing;
 849
 850                         /* Adjust for extra allocation */
 851                         x = x + MAX (0, widget->allocation.width - (width + border->left + border->right + view->spacing * 2))/2;
 852                         y = y + MAX (0, widget->allocation.height - (height + border->top + border->bottom +  view->spacing * 2))/2;
 853                 }
 854
 855                 page_area->x = x;
 856                 page_area->y = y;
 857         }
 858
 859         return TRUE;
 860 }
 861
 862 static void
 863 view_point_to_doc_point (EvView *view,
 864                          GdkPoint *view_point,
 865                          GdkRectangle *page_area,
 866                          double  *doc_point_x,
 867                          double  *doc_point_y)
 868 {
 869         *doc_point_x = (double) (view_point->x - page_area->x) / view->scale;
 870         *doc_point_y = (double) (view_point->y - page_area->y) / view->scale;
 871 }
 872
 873 static void
 874 view_rect_to_doc_rect (EvView *view,
 875                        GdkRectangle *view_rect,
 876                        GdkRectangle *page_area,
 877                        EvRectangle  *doc_rect)
 878 {
 879         doc_rect->x1 = (double) (view_rect->x - page_area->x) / view->scale;
 880         doc_rect->y1 = (double) (view_rect->y - page_area->y) / view->scale;
 881         doc_rect->x2 = doc_rect->x1 + (double) view_rect->width / view->scale;
 882         doc_rect->y2 = doc_rect->y1 + (double) view_rect->height / view->scale;
 883 }
 884
 885 static gboolean
 886 doc_point_to_view_point (EvView       *view,
 887                          int           page,
 888                          EvPoint      *doc_point,
 889                          GdkPoint     *view_point)
 890 {
 891         GdkRectangle page_area;
 892         GtkBorder border;
 893         double x, y, view_x, view_y;
 894         int width, height;
 895
 896         ev_page_cache_get_size (view->page_cache, page,
 897                                 view->rotation,
 898                                 1.0,
 899                                 &width, &height);
 900
 901         if (view->rotation == 0) {
 902                 x = doc_point->x;
 903                 y = doc_point->y;
 904         } else if (view->rotation == 90) {
 905                 x = width - doc_point->y;
 906                 y = doc_point->x;
 907         } else if (view->rotation == 180) {
 908                 x = width - doc_point->x;
 909                 y = height - doc_point->y;
 910         } else if (view->rotation == 270) {
 911                 x = doc_point->y;
 912                 y = height - doc_point->x;
 913         } else {
 914                 g_assert_not_reached ();
 915         }
 916
 917         get_page_extents (view, page, &page_area, &border);
 918
 919         view_x = x * view->scale;
 920         view_y = y * view->scale;
 921         view_point->x = view_x + page_area.x;
 922         view_point->y = view_y + page_area.y;
 923
 924         return (view_x > 0 && view_x <= page_area.width &&
 925                 view_y > 0 && view_y <= page_area.height);
 926 }
 927
 928 static void
 929 doc_rect_to_view_rect (EvView       *view,
 930                        int           page,
 931                        EvRectangle  *doc_rect,
 932                        GdkRectangle *view_rect)
 933 {
 934         GdkRectangle page_area;
 935         GtkBorder border;
 936         double x, y, w, h;
 937         int width, height;
 938
 939         ev_page_cache_get_size (view->page_cache, page,
 940                                 view->rotation,
 941                                 1.0,
 942                                 &width, &height);
 943
 944         if (view->rotation == 0) {
 945                 x = doc_rect->x1;
 946                 y = doc_rect->y1;
 947                 w = doc_rect->x2 - doc_rect->x1;
 948                 h = doc_rect->y2 - doc_rect->y1;
 949         } else if (view->rotation == 90) {
 950                 x = width - doc_rect->y2;
 951                 y = doc_rect->x1;
 952                 w = doc_rect->y2 - doc_rect->y1;
 953                 h = doc_rect->x2 - doc_rect->x1;
 954         } else if (view->rotation == 180) {
 955                 x = width - doc_rect->x2;
 956                 y = height - doc_rect->y2;
 957                 w = doc_rect->x2 - doc_rect->x1;
 958                 h = doc_rect->y2 - doc_rect->y1;
 959         } else if (view->rotation == 270) {
 960                 x = doc_rect->y1;
 961                 y = height - doc_rect->x2;
 962                 w = doc_rect->y2 - doc_rect->y1;
 963                 h = doc_rect->x2 - doc_rect->x1;
 964         } else {
 965                 g_assert_not_reached ();
 966         }
 967
 968         get_page_extents (view, page, &page_area, &border);
 969
 970         view_rect->x = x * view->scale + page_area.x;
 971         view_rect->y = y * view->scale + page_area.y;
 972         view_rect->width = w * view->scale;
 973         view_rect->height = h * view->scale;
 974 }
 975
 976 static void
 977 find_page_at_location (EvView  *view,
 978                        gdouble  x,
 979                        gdouble  y,
 980                        gint    *page,
 981                        gint    *x_offset,
 982                        gint    *y_offset)
 983 {
 984         int i;
 985
 986         if (view->document == NULL)
 987                 return;
 988
 989         g_assert (page);
 990         g_assert (x_offset);
 991         g_assert (y_offset);
 992
 993         for (i = view->start_page; i <= view->end_page; i++) {
 994                 GdkRectangle page_area;
 995                 GtkBorder border;
 996
 997                 if (! get_page_extents (view, i, &page_area, &border))
 998                         continue;
 999
1000                 if ((x >= page_area.x + border.left) &&
1001                     (x < page_area.x + page_area.width - border.right) &&
1002                     (y >= page_area.y + border.top) &&
1003                     (y < page_area.y + page_area.height - border.bottom)) {
1004                         *page = i;
1005                         *x_offset = x - (page_area.x + border.left);
1006                         *y_offset = y - (page_area.y + border.top);
1007                         return;
1008                 }
1009         }
1010
1011         *page = -1;
1012 }
1013
1014 static gboolean
1015 location_in_text (EvView  *view,
1016                   gdouble  x,
1017                   gdouble  y)
1018 {
1019         GdkRegion *region;
1020         gint page = -1;
1021         gint x_offset = 0, y_offset = 0;
1022
1023         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1024
1025         if (page == -1)
1026                 return FALSE;
1027
1028         region = ev_pixbuf_cache_get_text_mapping (view->pixbuf_cache, page);
1029
1030         if (region)
1031                 return gdk_region_point_in (region, x_offset / view->scale, y_offset / view->scale);
1032         else
1033                 return FALSE;
1034 }
1035
1036 static int
1037 ev_view_get_width (EvView *view)
1038 {
1039         return GTK_WIDGET (view)->allocation.width;
1040 }
1041
1042 static int
1043 ev_view_get_height (EvView *view)
1044 {
1045         return GTK_WIDGET (view)->allocation.height;
1046 }
1047
1048 static gboolean
1049 location_in_selected_text (EvView  *view,
1050                            gdouble  x,
1051                            gdouble  y)
1052 {
1053         gint page = -1;
1054         gint x_offset = 0, y_offset = 0;
1055         EvViewSelection *selection;
1056         GList *l = NULL;
1057
1058         for (l = view->selection_info.selections; l != NULL; l = l->next) {
1059                 selection = (EvViewSelection *)l->data;
1060
1061                 find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1062
1063                 if (page != selection->page)
1064                         continue;
1065
1066                 if (selection->covered_region &&
1067                     gdk_region_point_in (selection->covered_region, x_offset, y_offset))
1068                         return TRUE;
1069         }
1070
1071         return FALSE;
1072 }
1073
1074 static gboolean
1075 get_doc_point_from_offset (EvView *view,
1076                            gint    page,
1077                            gint    x_offset,
1078                            gint    y_offset,
1079                            gint   *x_new,
1080                            gint   *y_new)
1081 {
1082         int width, height;
1083         double x, y;
1084
1085         ev_page_cache_get_size (view->page_cache, page,
1086                                 view->rotation,
1087                                 1.0,
1088                                 &width, &height);
1089
1090         x_offset = x_offset / view->scale;
1091         y_offset = y_offset / view->scale;
1092
1093         if (view->rotation == 0) {
1094                 x = x_offset;
1095                 y = y_offset;
1096         } else if (view->rotation == 90) {
1097                 x = y_offset;
1098                 y = width - x_offset;
1099         } else if (view->rotation == 180) {
1100                 x = width - x_offset;
1101                 y = height - y_offset;
1102         } else if (view->rotation == 270) {
1103                 x = height - y_offset;
1104                 y = x_offset;
1105         } else {
1106                 g_assert_not_reached ();
1107         }
1108
1109         *x_new = x;
1110         *y_new = y;
1111
1112         return TRUE;
1113 }
1114
1115 /*** Hyperref ***/
1116 static EvLink *
1117 ev_view_get_link_at_location (EvView  *view,
1118                               gdouble  x,
1119                               gdouble  y)
1120 {
1121         gint page = -1;
1122         gint x_offset = 0, y_offset = 0;
1123         gint x_new = 0, y_new = 0;
1124         GList *link_mapping;
1125
1126         if (!EV_IS_DOCUMENT_LINKS (view->document))
1127                 return NULL;
1128
1129         x += view->scroll_x;
1130         y += view->scroll_y;
1131
1132         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1133
1134         if (page == -1)
1135                 return NULL;
1136
1137
1138         if (get_doc_point_from_offset (view, page, x_offset,
1139                                        y_offset, &x_new, &y_new) == FALSE)
1140                 return NULL;
1141
1142         link_mapping = ev_pixbuf_cache_get_link_mapping (view->pixbuf_cache, page);
1143
1144         if (link_mapping)
1145                 return ev_link_mapping_find (link_mapping, x_new, y_new);
1146         else
1147                 return NULL;
1148 }
1149
1150 static void
1151 goto_fitr_dest (EvView *view, EvLinkDest *dest)
1152 {
1153         EvPoint doc_point;
1154         double zoom;
1155
1156         zoom = zoom_for_size_best_fit (ev_link_dest_get_right (dest) - ev_link_dest_get_left (dest),
1157                                        ev_link_dest_get_bottom (dest) - ev_link_dest_get_top (dest),
1158                                        ev_view_get_width (view),
1159                                        ev_view_get_height (view), 0, 0);
1160
1161         ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1162         ev_view_set_zoom (view, zoom, FALSE);
1163
1164         doc_point.x = ev_link_dest_get_left (dest);
1165         doc_point.y = ev_link_dest_get_top (dest);
1166
1167         view->current_page = ev_link_dest_get_page (dest);
1168         view->pending_point = doc_point;
1169         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1170
1171         gtk_widget_queue_resize (GTK_WIDGET (view));
1172 }
1173
1174 static void
1175 goto_fitv_dest (EvView *view, EvLinkDest *dest)
1176 {
1177         EvPoint doc_point;
1178         int doc_width, doc_height, page;
1179         double zoom;
1180
1181         page = ev_link_dest_get_page (dest);
1182         ev_page_cache_get_size (view->page_cache, page, 0, 1.0, &doc_width, &doc_height);
1183
1184         doc_point.x = ev_link_dest_get_left (dest);
1185         doc_point.y = 0;
1186
1187         zoom = zoom_for_size_fit_height (doc_width - doc_point.x , doc_height,
1188                                          ev_view_get_width (view),
1189                                          ev_view_get_height (view), 0);
1190
1191         ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1192         ev_view_set_zoom (view, zoom, FALSE);
1193
1194         view->current_page = page;
1195         view->pending_point = doc_point;
1196         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1197
1198         gtk_widget_queue_resize (GTK_WIDGET (view));
1199 }
1200
1201 static void
1202 goto_fith_dest (EvView *view, EvLinkDest *dest)
1203 {
1204         EvPoint doc_point;
1205         int doc_width, doc_height, page;
1206         double zoom;
1207
1208         page = ev_link_dest_get_page (dest);
1209         ev_page_cache_get_size (view->page_cache, page, 0, 1.0, &doc_width, &doc_height);
1210
1211         doc_point.x = 0;
1212         doc_point.y = ev_link_dest_get_top (dest);
1213
1214         zoom = zoom_for_size_fit_width (doc_width, ev_link_dest_get_top (dest),
1215                                         ev_view_get_width (view),
1216                                         ev_view_get_height (view), 0);
1217
1218         ev_view_set_sizing_mode (view, EV_SIZING_FIT_WIDTH);
1219         ev_view_set_zoom (view, zoom, FALSE);
1220
1221         view->current_page = page;
1222         view->pending_point = doc_point;
1223         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1224
1225         gtk_widget_queue_resize (GTK_WIDGET (view));
1226 }
1227
1228 static void
1229 goto_fit_dest (EvView *view, EvLinkDest *dest)
1230 {
1231         double zoom;
1232         int doc_width, doc_height;
1233         int page;
1234
1235         page = ev_link_dest_get_page (dest);
1236         ev_page_cache_get_size (view->page_cache, page, 0, 1.0, &doc_width, &doc_height);
1237
1238         zoom = zoom_for_size_best_fit (doc_width, doc_height, ev_view_get_width (view),
1239                                        ev_view_get_height (view), 0, 0);
1240
1241         ev_view_set_sizing_mode (view, EV_SIZING_BEST_FIT);
1242         ev_view_set_zoom (view, zoom, FALSE);
1243
1244         view->current_page = page;
1245         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1246
1247         gtk_widget_queue_resize (GTK_WIDGET (view));
1248 }
1249
1250 static void
1251 goto_xyz_dest (EvView *view, EvLinkDest *dest)
1252 {
1253         EvPoint doc_point;
1254         gint page;
1255         double zoom;
1256
1257         zoom = ev_link_dest_get_zoom (dest);
1258         page = ev_link_dest_get_page (dest);
1259
1260         if (zoom > 1) {
1261                 ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1262                 ev_view_set_zoom (view, zoom, FALSE);
1263         }
1264
1265         doc_point.x = ev_link_dest_get_left (dest);
1266         doc_point.y = ev_link_dest_get_top (dest);
1267
1268         view->current_page = page;
1269         view->pending_point = doc_point;
1270         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1271
1272         gtk_widget_queue_resize (GTK_WIDGET (view));
1273 }
1274
1275 static void
1276 goto_dest (EvView *view, EvLinkDest *dest)
1277 {
1278         EvLinkDestType type;
1279         int page, n_pages, current_page;
1280
1281         page = ev_link_dest_get_page (dest);
1282         n_pages = ev_page_cache_get_n_pages (view->page_cache);
1283
1284         if (page < 0 || page >= n_pages)
1285                 return;
1286
1287         current_page = view->current_page;
1288
1289         type = ev_link_dest_get_dest_type (dest);
1290
1291         switch (type) {
1292                 case EV_LINK_DEST_TYPE_PAGE:
1293                         ev_page_cache_set_current_page (view->page_cache, page);
1294                         break;
1295                 case EV_LINK_DEST_TYPE_FIT:
1296                         goto_fit_dest (view, dest);
1297                         break;
1298                 case EV_LINK_DEST_TYPE_FITH:
1299                         goto_fith_dest (view, dest);
1300                         break;
1301                 case EV_LINK_DEST_TYPE_FITV:
1302                         goto_fitv_dest (view, dest);
1303                         break;
1304                 case EV_LINK_DEST_TYPE_FITR:
1305                         goto_fitr_dest (view, dest);
1306                         break;
1307                 case EV_LINK_DEST_TYPE_XYZ:
1308                         goto_xyz_dest (view, dest);
1309                         break;
1310                 case EV_LINK_DEST_TYPE_PAGE_LABEL:
1311                         ev_page_cache_set_page_label (view->page_cache, ev_link_dest_get_page_label (dest));
1312                         break;
1313                 default:
1314                         g_assert_not_reached ();
1315         }
1316
1317         if (current_page != view->current_page)
1318                 ev_page_cache_set_current_page (view->page_cache,
1319                                                 view->current_page);
1320 }
1321
1322 static void
1323 ev_view_goto_dest (EvView *view, EvLinkDest *dest)
1324 {
1325         EvLinkDestType type;
1326
1327         type = ev_link_dest_get_dest_type (dest);
1328
1329         if (type == EV_LINK_DEST_TYPE_NAMED) {
1330                 EvLinkDest  *dest2;
1331                 const gchar *named_dest;
1332
1333                 named_dest = ev_link_dest_get_named_dest (dest);
1334                 dest2 = ev_document_links_find_link_dest (EV_DOCUMENT_LINKS (view->document),
1335                                                           named_dest);
1336                 if (dest2) {
1337                         goto_dest (view, dest2);
1338                         g_object_unref (dest2);
1339                 }
1340
1341                 return;
1342         }
1343
1344         goto_dest (view, dest);
1345 }
1346
1347 void
1348 ev_view_handle_link (EvView *view, EvLink *link)
1349 {
1350         EvLinkAction    *action = NULL;
1351         EvLinkActionType type;
1352
1353         action = ev_link_get_action (link);
1354         if (!action)
1355                 return;
1356
1357         type = ev_link_action_get_action_type (action);
1358
1359         switch (type) {
1360                 case EV_LINK_ACTION_TYPE_GOTO_DEST: {
1361                         EvLinkDest *dest;
1362
1363                         g_signal_emit (view, signals[SIGNAL_HANDLE_LINK], 0, link);
1364
1365                         dest = ev_link_action_get_dest (action);
1366                         ev_view_goto_dest (view, dest);
1367                 }
1368                         break;
1369                 case EV_LINK_ACTION_TYPE_GOTO_REMOTE:
1370                 case EV_LINK_ACTION_TYPE_EXTERNAL_URI:
1371                 case EV_LINK_ACTION_TYPE_LAUNCH:
1372                 case EV_LINK_ACTION_TYPE_NAMED:
1373                         g_signal_emit (view, signals[SIGNAL_EXTERNAL_LINK], 0, action);
1374                         break;
1375         }
1376 }
1377
1378 gchar *
1379 ev_view_page_label_from_dest (EvView *view, EvLinkDest *dest)
1380 {
1381         EvLinkDestType type;
1382         gchar *msg = NULL;
1383
1384         type = ev_link_dest_get_dest_type (dest);
1385
1386         switch (type) {
1387                 case EV_LINK_DEST_TYPE_NAMED: {
1388                         EvLinkDest  *dest2;
1389                         const gchar *named_dest;
1390
1391                         named_dest = ev_link_dest_get_named_dest (dest);
1392                         dest2 = ev_document_links_find_link_dest (EV_DOCUMENT_LINKS (view->document),
1393                                                                   named_dest);
1394                         if (dest2) {
1395                                 msg = ev_page_cache_get_page_label (view->page_cache,
1396                                                                     ev_link_dest_get_page (dest2));
1397                                 g_object_unref (dest2);
1398                         }
1399                 }
1400
1401                         break;
1402                 case EV_LINK_DEST_TYPE_PAGE_LABEL: {
1403                         msg = g_strdup (ev_link_dest_get_page_label (dest));
1404                 }
1405                         break;
1406                 default:
1407                         msg = ev_page_cache_get_page_label (view->page_cache,
1408                                                             ev_link_dest_get_page (dest));
1409         }
1410
1411         return msg;
1412 }
1413
1414 static char *
1415 tip_from_action_named (EvLinkAction *action)
1416 {
1417         const gchar *name = ev_link_action_get_name (action);
1418
1419         if (g_ascii_strcasecmp (name, "FirstPage") == 0) {
1420                 return g_strdup (_("Go to first page"));
1421         } else if (g_ascii_strcasecmp (name, "PrevPage") == 0) {
1422                 return g_strdup (_("Go to previous page"));
1423         } else if (g_ascii_strcasecmp (name, "NextPage") == 0) {
1424                 return g_strdup (_("Go to next page"));
1425         } else if (g_ascii_strcasecmp (name, "LastPage") == 0) {
1426                 return g_strdup (_("Go to last page"));
1427         } else if (g_ascii_strcasecmp (name, "GoToPage") == 0) {
1428                 return g_strdup (_("Go to page"));
1429         } else if (g_ascii_strcasecmp (name, "Find") == 0) {
1430                 return g_strdup (_("Find"));
1431         }
1432
1433         return NULL;
1434 }
1435
1436 static char *
1437 tip_from_link (EvView *view, EvLink *link)
1438 {
1439         EvLinkAction *action;
1440         EvLinkActionType type;
1441         char *msg = NULL;
1442         char *page_label;
1443         const char *title;
1444
1445         action = ev_link_get_action (link);
1446         title = ev_link_get_title (link);
1447
1448         if (!action)
1449                 return title ? g_strdup (title) : NULL;
1450
1451         type = ev_link_action_get_action_type (action);
1452
1453         switch (type) {
1454                 case EV_LINK_ACTION_TYPE_GOTO_DEST:
1455                         page_label = ev_view_page_label_from_dest (view,
1456                                                                    ev_link_action_get_dest (action));
1457                         msg = g_strdup_printf (_("Go to page %s"), page_label);
1458                         g_free (page_label);
1459                         break;
1460                 case EV_LINK_ACTION_TYPE_GOTO_REMOTE:
1461                         if (title) {
1462                                 msg = g_strdup_printf (_("Go to %s on file “%s”"), title,
1463                                                        ev_link_action_get_filename (action));
1464                         } else {
1465                                 msg = g_strdup_printf (_("Go to file “%s”"),
1466                                                        ev_link_action_get_filename (action));
1467                         }
1468
1469                         break;
1470                 case EV_LINK_ACTION_TYPE_EXTERNAL_URI:
1471                         msg = g_strdup (ev_link_action_get_uri (action));
1472                         break;
1473                 case EV_LINK_ACTION_TYPE_LAUNCH:
1474                         msg = g_strdup_printf (_("Launch %s"),
1475                                                ev_link_action_get_filename (action));
1476                         break;
1477                 case EV_LINK_ACTION_TYPE_NAMED:
1478                         msg = tip_from_action_named (action);
1479                         break;
1480                 default:
1481                         if (title)
1482                                 msg = g_strdup (title);
1483                         break;
1484         }
1485
1486         return msg;
1487 }
1488
1489 static void
1490 ev_view_handle_cursor_over_xy (EvView *view, gint x, gint y)
1491 {
1492         EvLink      *link;
1493         EvFormField *field;
1494
1495         if (view->cursor == EV_VIEW_CURSOR_HIDDEN)
1496                 return;
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 ((field = ev_view_get_form_field_at_location (view, x, y))) {
1523                 if (field->is_read_only) {
1524                         if (view->cursor == EV_VIEW_CURSOR_LINK ||
1525                             view->cursor == EV_VIEW_CURSOR_IBEAM)
1526                                 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
1527                 } else if (EV_IS_FORM_FIELD_TEXT (field)) {
1528                         ev_view_set_cursor (view, EV_VIEW_CURSOR_IBEAM);
1529                 } else {
1530                         ev_view_set_cursor (view, EV_VIEW_CURSOR_LINK);
1531                 }
1532         } else if (location_in_text (view, x + view->scroll_x, y + view->scroll_y)) {
1533                 ev_view_set_cursor (view, EV_VIEW_CURSOR_IBEAM);
1534         } else {
1535                 if (view->cursor == EV_VIEW_CURSOR_LINK ||
1536                     view->cursor == EV_VIEW_CURSOR_IBEAM)
1537                         ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
1538         }
1539 }
1540
1541 /*** Images ***/
1542 static EvImage *
1543 ev_view_get_image_at_location (EvView  *view,
1544                                gdouble  x,
1545                                gdouble  y)
1546 {
1547         gint page = -1;
1548         gint x_offset = 0, y_offset = 0;
1549         gint x_new = 0, y_new = 0;
1550         GList *image_mapping;
1551
1552         if (!EV_IS_DOCUMENT_IMAGES (view->document))
1553                 return NULL;
1554
1555         x += view->scroll_x;
1556         y += view->scroll_y;
1557
1558         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1559
1560         if (page == -1)
1561                 return NULL;
1562
1563         if (get_doc_point_from_offset (view, page, x_offset,
1564                                        y_offset, &x_new, &y_new) == FALSE)
1565                 return NULL;
1566
1567         image_mapping = ev_pixbuf_cache_get_image_mapping (view->pixbuf_cache, page);
1568
1569         if (image_mapping)
1570                 return ev_image_mapping_find (image_mapping, x_new, y_new);
1571         else
1572                 return NULL;
1573 }
1574
1575 /*** Forms ***/
1576 static EvFormField *
1577 ev_view_get_form_field_at_location (EvView  *view,
1578                                     gdouble  x,
1579                                     gdouble  y)
1580 {
1581         gint page = -1;
1582         gint x_offset = 0, y_offset = 0;
1583         gint x_new = 0, y_new = 0;
1584         GList *forms_mapping;
1585
1586         if (!EV_IS_DOCUMENT_FORMS (view->document))
1587                 return NULL;
1588
1589         x += view->scroll_x;
1590         y += view->scroll_y;
1591
1592         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1593
1594         if (page == -1)
1595                 return NULL;
1596
1597         if (get_doc_point_from_offset (view, page, x_offset,
1598                                        y_offset, &x_new, &y_new) == FALSE)
1599                 return NULL;
1600
1601         forms_mapping = ev_pixbuf_cache_get_form_field_mapping (view->pixbuf_cache, page);
1602
1603         if (forms_mapping)
1604                 return ev_form_field_mapping_find (forms_mapping, x_new, y_new);
1605         else
1606                 return NULL;
1607 }
1608
1609 static GdkRegion *
1610 ev_view_form_field_get_region (EvView      *view,
1611                                EvFormField *field)
1612 {
1613         EvRectangle  field_area;
1614         GdkRectangle view_area;
1615         GList       *forms_mapping;
1616
1617         forms_mapping = ev_pixbuf_cache_get_form_field_mapping (view->pixbuf_cache,
1618                                                                 field->page);
1619         ev_form_field_mapping_get_area (forms_mapping, field, &field_area);
1620         doc_rect_to_view_rect (view, field->page, &field_area, &view_area);
1621         view_area.x -= view->scroll_x;
1622         view_area.y -= view->scroll_y;
1623
1624         return gdk_region_rectangle (&view_area);
1625 }
1626
1627 static gboolean
1628 ev_view_forms_remove_widgets (EvView *view)
1629 {
1630         ev_view_remove_all (view);
1631
1632         return FALSE;
1633 }
1634
1635 static void
1636 ev_view_form_field_destroy (GtkWidget *widget,
1637                             EvView    *view)
1638 {
1639         g_idle_add ((GSourceFunc)ev_view_forms_remove_widgets, view);
1640 }
1641
1642 static GtkWidget *
1643 ev_view_form_field_button_create_widget (EvView      *view,
1644                                          EvFormField *field)
1645 {
1646         EvFormFieldButton *field_button = EV_FORM_FIELD_BUTTON (field);
1647         GdkRegion         *field_region = NULL;
1648
1649         switch (field_button->type) {
1650                 case EV_FORM_FIELD_BUTTON_PUSH:
1651                         return NULL;
1652                 case EV_FORM_FIELD_BUTTON_CHECK:
1653                 case EV_FORM_FIELD_BUTTON_RADIO: {
1654                         gboolean  state;
1655                         GList    *forms_mapping, *l;
1656
1657                         state = ev_document_forms_form_field_button_get_state (EV_DOCUMENT_FORMS (view->document),
1658                                                                                field);
1659
1660                         /* FIXME: it actually depends on NoToggleToOff flags */
1661                         if (field_button->type == EV_FORM_FIELD_BUTTON_RADIO &&
1662                             state && field_button->state)
1663                                 return NULL;
1664
1665                         field_region = ev_view_form_field_get_region (view, field);
1666
1667                         /* For radio buttons and checkbox buttons that are in a set
1668                          * we need to update also the region for the current selected item
1669                          */
1670                         forms_mapping = ev_pixbuf_cache_get_form_field_mapping (view->pixbuf_cache,
1671                                                                                 field->page);
1672                         for (l = forms_mapping; l; l = g_list_next (l)) {
1673                                 EvFormField *button = ((EvFormFieldMapping *)(l->data))->field;
1674                                 GdkRegion   *button_region;
1675
1676                                 if (button->id == field->id)
1677                                         continue;
1678
1679                                 /* FIXME: only buttons in the same group should be updated */
1680                                 if (!EV_IS_FORM_FIELD_BUTTON (button) ||
1681                                     EV_FORM_FIELD_BUTTON (button)->type != field_button->type ||
1682                                     EV_FORM_FIELD_BUTTON (button)->state != TRUE)
1683                                         continue;
1684
1685                                 button_region = ev_view_form_field_get_region (view, button);
1686                                 gdk_region_union (field_region, button_region);
1687                                 gdk_region_destroy (button_region);
1688                         }
1689
1690                         ev_document_forms_form_field_button_set_state (EV_DOCUMENT_FORMS (view->document),
1691                                                                        field, !state);
1692                         field_button->state = !state;
1693                 }
1694                         break;
1695         }
1696
1697         ev_pixbuf_cache_reload_page (view->pixbuf_cache,
1698                                      field_region,
1699                                      field->page,
1700                                      view->rotation,
1701                                      view->scale);
1702         gdk_region_destroy (field_region);
1703
1704         return NULL;
1705 }
1706
1707 static void
1708 ev_view_form_field_text_save (EvView    *view,
1709                               GtkWidget *widget)
1710 {
1711         EvFormField *field;
1712
1713         if (!view->document)
1714                 return;
1715
1716         field = g_object_get_data (G_OBJECT (widget), "form-field");
1717
1718         if (field->changed) {
1719                 EvFormFieldText *field_text = EV_FORM_FIELD_TEXT (field);
1720                 GdkRegion       *field_region;
1721
1722                 field_region = ev_view_form_field_get_region (view, field);
1723
1724                 ev_document_forms_form_field_text_set_text (EV_DOCUMENT_FORMS (view->document),
1725                                                             field, field_text->text);
1726                 field->changed = FALSE;
1727                 ev_pixbuf_cache_reload_page (view->pixbuf_cache,
1728                                              field_region,
1729                                              field->page,
1730                                              view->rotation,
1731                                              view->scale);
1732                 gdk_region_destroy (field_region);
1733         }
1734 }
1735
1736 static void
1737 ev_view_form_field_text_changed (GtkWidget   *widget,
1738                                  EvFormField *field)
1739 {
1740         EvFormFieldText *field_text = EV_FORM_FIELD_TEXT (field);
1741         gchar           *text = NULL;
1742
1743         if (GTK_IS_ENTRY (widget)) {
1744                 text = g_strdup (gtk_entry_get_text (GTK_ENTRY (widget)));
1745         } else if (GTK_IS_TEXT_BUFFER (widget)) {
1746                 GtkTextIter start, end;
1747
1748                 gtk_text_buffer_get_bounds (GTK_TEXT_BUFFER (widget), &start, &end);
1749                 text = gtk_text_buffer_get_text (GTK_TEXT_BUFFER (widget),
1750                                                  &start, &end, FALSE);
1751         }
1752
1753         if (!field_text->text ||
1754             (field_text->text && g_ascii_strcasecmp (field_text->text, text) != 0)) {
1755                 g_free (field_text->text);
1756                 field_text->text = text;
1757                 field->changed = TRUE;
1758         }
1759 }
1760
1761 static GtkWidget *
1762 ev_view_form_field_text_create_widget (EvView      *view,
1763                                        EvFormField *field)
1764 {
1765         EvFormFieldText *field_text = EV_FORM_FIELD_TEXT (field);
1766         GtkWidget       *text = NULL;
1767         gchar           *txt;
1768
1769         txt = ev_document_forms_form_field_text_get_text (EV_DOCUMENT_FORMS (view->document),
1770                                                           field);
1771
1772         switch (field_text->type) {
1773                 case EV_FORM_FIELD_TEXT_FILE_SELECT:
1774                         /* TODO */
1775                 case EV_FORM_FIELD_TEXT_NORMAL:
1776                         text = gtk_entry_new ();
1777                         gtk_entry_set_has_frame (GTK_ENTRY (text), FALSE);
1778                         gtk_entry_set_max_length (GTK_ENTRY (text), field_text->max_len);
1779                         gtk_entry_set_visibility (GTK_ENTRY (text), !field_text->is_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         if (!view->document)
1825                 return;
1826
1827         field = g_object_get_data (G_OBJECT (widget), "form-field");
1828
1829         if (field->changed) {
1830                 GList             *l;
1831                 EvFormFieldChoice *field_choice = EV_FORM_FIELD_CHOICE (field);
1832                 GdkRegion         *field_region;
1833
1834                 field_region = ev_view_form_field_get_region (view, field);
1835
1836                 if (field_choice->is_editable) {
1837                         ev_document_forms_form_field_choice_set_text (EV_DOCUMENT_FORMS (view->document),
1838                                                                       field, field_choice->text);
1839                 } else {
1840                         ev_document_forms_form_field_choice_unselect_all (EV_DOCUMENT_FORMS (view->document), field);
1841                         for (l = field_choice->selected_items; l; l = g_list_next (l)) {
1842                                 ev_document_forms_form_field_choice_select_item (EV_DOCUMENT_FORMS (view->document),
1843                                                                                  field,
1844                                                                                  GPOINTER_TO_INT (l->data));
1845                         }
1846                 }
1847                 field->changed = FALSE;
1848                 ev_pixbuf_cache_reload_page (view->pixbuf_cache,
1849                                              field_region,
1850                                              field->page,
1851                                              view->rotation,
1852                                              view->scale);
1853                 gdk_region_destroy (field_region);
1854         }
1855 }
1856
1857 static void
1858 ev_view_form_field_choice_changed (GtkWidget   *widget,
1859                                    EvFormField *field)
1860 {
1861         EvFormFieldChoice *field_choice = EV_FORM_FIELD_CHOICE (field);
1862
1863         if (GTK_IS_COMBO_BOX (widget)) {
1864                 gint item;
1865
1866                 item = gtk_combo_box_get_active (GTK_COMBO_BOX (widget));
1867                 if (GPOINTER_TO_INT (field_choice->selected_items->data) != item) {
1868                         g_list_free (field_choice->selected_items);
1869                         field_choice->selected_items = NULL;
1870                         field_choice->selected_items = g_list_prepend (field_choice->selected_items,
1871                                                                        GINT_TO_POINTER (item));
1872                         field->changed = TRUE;
1873                 }
1874
1875                 if (GTK_IS_COMBO_BOX_ENTRY (widget)) {
1876                         gchar *text;
1877
1878                         text = gtk_combo_box_get_active_text (GTK_COMBO_BOX (widget));
1879                         if (!field_choice->text ||
1880                             (field_choice->text && g_ascii_strcasecmp (field_choice->text, text) != 0)) {
1881                                 g_free (field_choice->text);
1882                                 field_choice->text = text;
1883                                 field->changed = TRUE;
1884                         }
1885                 }
1886         } else if (GTK_IS_TREE_SELECTION (widget)) {
1887                 GtkTreeSelection *selection = GTK_TREE_SELECTION (widget);
1888                 GtkTreeModel     *model;
1889                 GList            *items, *l;
1890
1891                 items = gtk_tree_selection_get_selected_rows (selection, &model);
1892                 g_list_free (field_choice->selected_items);
1893                 field_choice->selected_items = NULL;
1894
1895                 for (l = items; l && l->data; l = g_list_next (l)) {
1896                         GtkTreeIter  iter;
1897                         GtkTreePath *path = (GtkTreePath *)l->data;
1898                         gint         item;
1899
1900                         gtk_tree_model_get_iter (model, &iter, path);
1901                         gtk_tree_model_get (model, &iter, 1, &item, -1);
1902
1903                         field_choice->selected_items = g_list_prepend (field_choice->selected_items,
1904                                                                        GINT_TO_POINTER (item));
1905
1906                         gtk_tree_path_free (path);
1907                 }
1908
1909                 g_list_free (items);
1910
1911                 field->changed = TRUE;
1912         }
1913 }
1914
1915 static GtkWidget *
1916 ev_view_form_field_choice_create_widget (EvView      *view,
1917                                          EvFormField *field)
1918 {
1919         EvFormFieldChoice *field_choice = EV_FORM_FIELD_CHOICE (field);
1920         GtkWidget         *choice;
1921         GtkTreeModel      *model;
1922         gint               n_items, i;
1923         gint               selected_item = 0;
1924
1925         n_items = ev_document_forms_form_field_choice_get_n_items (EV_DOCUMENT_FORMS (view->document),
1926                                                                    field);
1927         model = GTK_TREE_MODEL (gtk_list_store_new (2, G_TYPE_STRING, G_TYPE_INT));
1928         for (i = 0; i < n_items; i++) {
1929                 GtkTreeIter iter;
1930                 gchar      *item;
1931
1932                 item = ev_document_forms_form_field_choice_get_item (EV_DOCUMENT_FORMS (view->document),
1933                                                                      field, i);
1934                 if (ev_document_forms_form_field_choice_is_item_selected (
1935                             EV_DOCUMENT_FORMS (view->document), field, i)) {
1936                         selected_item = i;
1937                         /* FIXME: we need a get_selected_items function in poppler */
1938                         field_choice->selected_items = g_list_prepend (field_choice->selected_items,
1939                                                                        GINT_TO_POINTER (i));
1940                 }
1941
1942                 if (item) {
1943                         gtk_list_store_append (GTK_LIST_STORE (model), &iter);
1944                         gtk_list_store_set (GTK_LIST_STORE (model), &iter,
1945                                             0, item,
1946                                             1, i,
1947                                             -1);
1948                         g_free (item);
1949                 }
1950         }
1951
1952         if (field_choice->type == EV_FORM_FIELD_CHOICE_LIST) {
1953                 GtkCellRenderer  *renderer;
1954                 GtkWidget        *tree_view;
1955                 GtkTreeSelection *selection;
1956
1957                 tree_view = gtk_tree_view_new_with_model (model);
1958                 gtk_tree_view_set_headers_visible (GTK_TREE_VIEW (tree_view), FALSE);
1959
1960                 selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (tree_view));
1961                 if (field_choice->multi_select) {
1962                         gtk_tree_selection_set_mode (selection, GTK_SELECTION_MULTIPLE);
1963                 }
1964
1965                 /* TODO: set selected items */
1966
1967                 renderer = gtk_cell_renderer_text_new ();
1968                 gtk_tree_view_insert_column_with_attributes (GTK_TREE_VIEW (tree_view),
1969                                                              0,
1970                                                              "choix", renderer,
1971                                                              "text", 0,
1972                                                              NULL);
1973
1974                 choice = gtk_scrolled_window_new (NULL, NULL);
1975                 gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (choice),
1976                                                 GTK_POLICY_AUTOMATIC,
1977                                                 GTK_POLICY_AUTOMATIC);
1978                 gtk_container_add (GTK_CONTAINER (choice), tree_view);
1979                 gtk_widget_show (tree_view);
1980
1981                 g_signal_connect (G_OBJECT (selection), "changed",
1982                                   G_CALLBACK (ev_view_form_field_choice_changed),
1983                                   field);
1984                 g_signal_connect_after (G_OBJECT (selection), "changed",
1985                                         G_CALLBACK (ev_view_form_field_destroy),
1986                                         view);
1987         } else if (field_choice->is_editable) { /* ComboBoxEntry */
1988                 gchar *text;
1989
1990                 choice = gtk_combo_box_entry_new_with_model (model, 0);
1991                 text = ev_document_forms_form_field_choice_get_text (EV_DOCUMENT_FORMS (view->document), field);
1992                 if (text) {
1993                         gtk_entry_set_text (GTK_ENTRY (gtk_bin_get_child (GTK_BIN (choice))), text);
1994                         g_free (text);
1995                 }
1996
1997                 g_signal_connect (G_OBJECT (choice), "changed",
1998                                   G_CALLBACK (ev_view_form_field_choice_changed),
1999                                   field);
2000                 g_signal_connect_after (G_OBJECT (GTK_BIN (choice)->child), "activate",
2001                                         G_CALLBACK (ev_view_form_field_destroy),
2002                                         view);
2003         } else { /* ComboBoxText */
2004                 GtkCellRenderer *renderer;
2005
2006                 choice = gtk_combo_box_new_with_model (model);
2007                 renderer = gtk_cell_renderer_text_new ();
2008                 gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (choice),
2009                                             renderer, TRUE);
2010                 gtk_cell_layout_set_attributes (GTK_CELL_LAYOUT (choice),
2011                                                 renderer,
2012                                                 "text", 0,
2013                                                 NULL);
2014                 gtk_combo_box_set_active (GTK_COMBO_BOX (choice), selected_item);
2015                 gtk_combo_box_popup (GTK_COMBO_BOX (choice));
2016
2017                 g_signal_connect (G_OBJECT (choice), "changed",
2018                                   G_CALLBACK (ev_view_form_field_choice_changed),
2019                                   field);
2020                 g_signal_connect_after (G_OBJECT (choice), "changed",
2021                                         G_CALLBACK (ev_view_form_field_destroy),
2022                                         view);
2023         }
2024
2025         g_object_unref (model);
2026
2027         g_object_weak_ref (G_OBJECT (choice),
2028                            (GWeakNotify)ev_view_form_field_choice_save,
2029                            view);
2030
2031         return choice;
2032 }
2033
2034 static void
2035 ev_view_handle_form_field (EvView      *view,
2036                            EvFormField *field,
2037                            gdouble      x,
2038                            gdouble      y)
2039 {
2040         GtkWidget   *field_widget = NULL;
2041         GList       *form_field_mapping;
2042         EvRectangle  field_area;
2043         GdkRectangle view_area;
2044
2045         if (field->is_read_only)
2046                 return;
2047
2048         if (EV_IS_FORM_FIELD_BUTTON (field)) {
2049                 field_widget = ev_view_form_field_button_create_widget (view, field);
2050         } else if (EV_IS_FORM_FIELD_TEXT (field)) {
2051                 field_widget = ev_view_form_field_text_create_widget (view, field);
2052         } else if (EV_IS_FORM_FIELD_CHOICE (field)) {
2053                 field_widget = ev_view_form_field_choice_create_widget (view, field);
2054         } else if (EV_IS_FORM_FIELD_SIGNATURE (field)) {
2055                 /* TODO */
2056         }
2057
2058         /* Form field doesn't require a widget */
2059         if (!field_widget)
2060                 return;
2061
2062         g_object_set_data_full (G_OBJECT (field_widget), "form-field",
2063                                 g_object_ref (field),
2064                                 (GDestroyNotify)g_object_unref);
2065
2066         form_field_mapping = ev_pixbuf_cache_get_form_field_mapping (view->pixbuf_cache, field->page);
2067         ev_form_field_mapping_get_area (form_field_mapping, field, &field_area);
2068
2069         doc_rect_to_view_rect (view, field->page, &field_area, &view_area);
2070         view_area.x -= view->scroll_x;
2071         view_area.y -= view->scroll_y;
2072
2073         gtk_layout_put (GTK_LAYOUT (view), field_widget, view_area.x, view_area.y);
2074         gtk_widget_show (field_widget);
2075         gtk_widget_grab_focus (field_widget);
2076 }
2077
2078 /*** GtkWidget implementation ***/
2079
2080 static void
2081 ev_view_size_request_continuous_dual_page (EvView         *view,
2082                                            GtkRequisition *requisition)
2083 {
2084         int max_width;
2085         gint n_pages;
2086         GtkBorder border;
2087
2088         ev_page_cache_get_max_width (view->page_cache, view->rotation,
2089                                      view->scale, &max_width);
2090         compute_border (view, max_width, max_width, &border);
2091
2092         n_pages = ev_page_cache_get_n_pages (view->page_cache) + 1;
2093
2094         requisition->width = (max_width + border.left + border.right) * 2 + (view->spacing * 3);
2095         get_page_y_offset (view, n_pages, view->scale, &requisition->height);
2096
2097         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
2098                 requisition->width = 1;
2099         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
2100                 requisition->width = 1;
2101                 /* FIXME: This could actually be set on one page docs or docs
2102                  * with a strange aspect ratio. */
2103                 /* requisition->height = 1;*/
2104         }
2105 }
2106
2107 static void
2108 ev_view_size_request_continuous (EvView         *view,
2109                                  GtkRequisition *requisition)
2110 {
2111         int max_width;
2112         int n_pages;
2113         GtkBorder border;
2114
2115
2116         ev_page_cache_get_max_width (view->page_cache, view->rotation,
2117                                      view->scale, &max_width);
2118         n_pages = ev_page_cache_get_n_pages (view->page_cache);
2119         compute_border (view, max_width, max_width, &border);
2120
2121         requisition->width = max_width + (view->spacing * 2) + border.left + border.right;
2122         get_page_y_offset (view, n_pages, view->scale, &requisition->height);
2123
2124         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
2125                 requisition->width = 1;
2126         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
2127                 requisition->width = 1;
2128                 /* FIXME: This could actually be set on one page docs or docs
2129                  * with a strange aspect ratio. */
2130                 /* requisition->height = 1;*/
2131         }
2132 }
2133
2134 static void
2135 ev_view_size_request_dual_page (EvView         *view,
2136                                 GtkRequisition *requisition)
2137 {
2138         GtkBorder border;
2139         gint width, height;
2140
2141         /* Find the largest of the two. */
2142         ev_page_cache_get_size (view->page_cache,
2143                                 view->current_page,
2144                                 view->rotation,
2145                                 view->scale,
2146                                 &width, &height);
2147         if (view->current_page + 1 < ev_page_cache_get_n_pages (view->page_cache)) {
2148                 gint width_2, height_2;
2149                 ev_page_cache_get_size (view->page_cache,
2150                                         view->current_page + 1,
2151                                         view->rotation,
2152                                         view->scale,
2153                                         &width_2, &height_2);
2154                 if (width_2 > width) {
2155                         width = width_2;
2156                         height = height_2;
2157                 }
2158         }
2159         compute_border (view, width, height, &border);
2160
2161         requisition->width = ((width + border.left + border.right) * 2) +
2162                 (view->spacing * 3);
2163         requisition->height = (height + border.top + border.bottom) +
2164                 (view->spacing * 2);
2165
2166         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
2167                 requisition->width = 1;
2168         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
2169                 requisition->width = 1;
2170                 requisition->height = 1;
2171         }
2172 }
2173
2174 static void
2175 ev_view_size_request_single_page (EvView         *view,
2176                                   GtkRequisition *requisition)
2177 {
2178         GtkBorder border;
2179         gint width, height;
2180
2181         ev_page_cache_get_size (view->page_cache,
2182                                 view->current_page,
2183                                 view->rotation,
2184                                 view->scale,
2185                                 &width, &height);
2186         compute_border (view, width, height, &border);
2187
2188         requisition->width = width + border.left + border.right + (2 * view->spacing);
2189         requisition->height = height + border.top + border.bottom + (2 * view->spacing);
2190
2191         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
2192                 requisition->width = 1;
2193                 requisition->height = height + border.top + border.bottom + (2 * view->spacing);
2194         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
2195                 requisition->width = 1;
2196                 requisition->height = 1;
2197         }
2198 }
2199
2200 static void
2201 ev_view_size_request (GtkWidget      *widget,
2202                       GtkRequisition *requisition)
2203 {
2204         EvView *view = EV_VIEW (widget);
2205
2206         if (view->document == NULL) {
2207                 requisition->width = 1;
2208                 requisition->height = 1;
2209                 return;
2210         }
2211
2212         if (view->presentation) {
2213                 requisition->width = 1;
2214                 requisition->height = 1;
2215                 return;
2216         }
2217
2218         if (view->continuous && view->dual_page)
2219                 ev_view_size_request_continuous_dual_page (view, requisition);
2220         else if (view->continuous)
2221                 ev_view_size_request_continuous (view, requisition);
2222         else if (view->dual_page)
2223                 ev_view_size_request_dual_page (view, requisition);
2224         else
2225                 ev_view_size_request_single_page (view, requisition);
2226 }
2227
2228 static void
2229 ev_view_size_allocate (GtkWidget      *widget,
2230                        GtkAllocation  *allocation)
2231 {
2232         EvView *view = EV_VIEW (widget);
2233         GList  *children, *l;
2234
2235         GTK_WIDGET_CLASS (ev_view_parent_class)->size_allocate (widget, allocation);
2236
2237         if (view->sizing_mode == EV_SIZING_FIT_WIDTH ||
2238             view->sizing_mode == EV_SIZING_BEST_FIT) {
2239
2240                 g_signal_emit (view, signals[SIGNAL_ZOOM_INVALID], 0);
2241
2242                 ev_view_size_request (widget, &widget->requisition);
2243         }
2244
2245         view_set_adjustment_values (view, GTK_ORIENTATION_HORIZONTAL);
2246         view_set_adjustment_values (view, GTK_ORIENTATION_VERTICAL);
2247
2248         if (view->document)
2249                 view_update_range_and_current_page (view);
2250
2251         view->pending_scroll = SCROLL_TO_KEEP_POSITION;
2252         view->pending_resize = FALSE;
2253
2254         children = gtk_container_get_children (GTK_CONTAINER (widget));
2255         for (l = children; l && l->data; l = g_list_next (l)) {
2256                 EvFormField   *field;
2257                 EvRectangle    field_area;
2258                 GdkRectangle   view_area;
2259                 GList         *form_field_mapping;
2260                 GtkAllocation  child_allocation;
2261                 GtkRequisition child_requisition;
2262                 GtkWidget     *child = (GtkWidget *)l->data;
2263
2264                 field = g_object_get_data (G_OBJECT (child), "form-field");
2265                 if (!field)
2266                         continue;
2267
2268                 form_field_mapping = ev_pixbuf_cache_get_form_field_mapping (view->pixbuf_cache,
2269                                                                              field->page);
2270                 ev_form_field_mapping_get_area (form_field_mapping, field, &field_area);
2271
2272                 doc_rect_to_view_rect (view, field->page, &field_area, &view_area);
2273                 view_area.x -= view->scroll_x;
2274                 view_area.y -= view->scroll_y;
2275
2276                 gtk_widget_size_request (child, &child_requisition);
2277                 if (child_requisition.width != view_area.width ||
2278                     child_requisition.height != view_area.height)
2279                         gtk_widget_set_size_request (child, view_area.width, view_area.height);
2280
2281                 gtk_container_child_get (GTK_CONTAINER (widget),
2282                                          child,
2283                                          "x", &child_allocation.x,
2284                                          "y", &child_allocation.y,
2285                                          NULL);
2286                 if (child_allocation.x != view_area.x ||
2287                     child_allocation.y != view_area.y) {
2288                         gtk_layout_move (GTK_LAYOUT (widget), child, view_area.x, view_area.y);
2289                 }
2290         }
2291         g_list_free (children);
2292 }
2293
2294 static void
2295 ev_view_realize (GtkWidget *widget)
2296 {
2297         EvView *view = EV_VIEW (widget);
2298
2299         if (GTK_WIDGET_CLASS (ev_view_parent_class)->realize)
2300                 (* GTK_WIDGET_CLASS (ev_view_parent_class)->realize) (widget);
2301
2302         gdk_window_set_events (view->layout.bin_window,
2303                                (gdk_window_get_events (view->layout.bin_window) |
2304                                 GDK_EXPOSURE_MASK |
2305                                 GDK_BUTTON_PRESS_MASK |
2306                                 GDK_BUTTON_RELEASE_MASK |
2307                                 GDK_SCROLL_MASK |
2308                                 GDK_KEY_PRESS_MASK |
2309                                 GDK_POINTER_MOTION_MASK |
2310                                 GDK_POINTER_MOTION_HINT_MASK |
2311                                 GDK_ENTER_NOTIFY_MASK |
2312                                 GDK_LEAVE_NOTIFY_MASK));
2313
2314         if (view->presentation)
2315                 gdk_window_set_background (view->layout.bin_window, &widget->style->black);
2316         else
2317                 gdk_window_set_background (view->layout.bin_window, &widget->style->mid [GTK_STATE_NORMAL]);
2318 }
2319
2320 static gboolean
2321 ev_view_scroll_event (GtkWidget *widget, GdkEventScroll *event)
2322 {
2323         EvView *view = EV_VIEW (widget);
2324         guint state;
2325
2326         state = event->state & gtk_accelerator_get_default_mod_mask ();
2327
2328         if (state == GDK_CONTROL_MASK && view->presentation == FALSE) {
2329                 ev_view_set_sizing_mode (view, EV_SIZING_FREE);
2330
2331                 if (event->direction == GDK_SCROLL_UP ||
2332                     event->direction == GDK_SCROLL_LEFT) {
2333                         if (ev_view_can_zoom_in (view)) {
2334                                 ev_view_zoom_in (view);
2335                         }
2336                 } else {
2337                         if (ev_view_can_zoom_out (view)) {
2338                                 ev_view_zoom_out (view);
2339                         }
2340                 }
2341
2342                 return TRUE;
2343         }
2344
2345         view->jump_to_find_result = FALSE;
2346         /* Shift+Wheel scrolls the in the perpendicular direction */
2347         if (state & GDK_SHIFT_MASK) {
2348                 if (event->direction == GDK_SCROLL_UP)
2349                         event->direction = GDK_SCROLL_LEFT;
2350                 if (event->direction == GDK_SCROLL_LEFT)
2351                         event->direction = GDK_SCROLL_UP;
2352                 if (event->direction == GDK_SCROLL_DOWN)
2353                         event->direction = GDK_SCROLL_RIGHT;
2354                 if (event->direction == GDK_SCROLL_RIGHT)
2355                         event->direction = GDK_SCROLL_DOWN;
2356
2357                 event->state &= ~GDK_SHIFT_MASK;
2358                 state &= ~GDK_SHIFT_MASK;
2359         }
2360
2361         if (state == 0 && view->presentation) {
2362                 switch (event->direction) {
2363                         case GDK_SCROLL_DOWN:
2364                         case GDK_SCROLL_RIGHT:
2365                                 ev_view_next_page (view);
2366                                 break;
2367                         case GDK_SCROLL_UP:
2368                         case GDK_SCROLL_LEFT:
2369                                 ev_view_previous_page (view);
2370                                 break;
2371                 }
2372
2373                 return TRUE;
2374         }
2375
2376         return FALSE;
2377 }
2378
2379 static EvViewSelection *
2380 find_selection_for_page (EvView *view,
2381                          gint    page)
2382 {
2383         GList *list;
2384
2385         for (list = view->selection_info.selections; list != NULL; list = list->next) {
2386                 EvViewSelection *selection;
2387
2388                 selection = (EvViewSelection *) list->data;
2389
2390                 if (selection->page == page)
2391                         return selection;
2392         }
2393
2394         return NULL;
2395 }
2396
2397 static void
2398 draw_end_presentation_page (EvView       *view,
2399                             GdkRectangle *page_area)
2400 {
2401         PangoLayout *layout;
2402         PangoFontDescription *font_desc;
2403         gchar *markup;
2404         const gchar *text = _("End of presentation. Press Escape to exit.");
2405
2406         if (view->presentation_state != EV_PRESENTATION_END)
2407                 return;
2408
2409         layout = gtk_widget_create_pango_layout (GTK_WIDGET (view), NULL);
2410         markup = g_strdup_printf ("<span foreground=\"white\">%s</span>", text);
2411         pango_layout_set_markup (layout, markup, -1);
2412         g_free (markup);
2413
2414         font_desc = pango_font_description_new ();
2415         pango_font_description_set_size (font_desc, 16 * PANGO_SCALE);
2416         pango_layout_set_font_description (layout, font_desc);
2417
2418         gtk_paint_layout (GTK_WIDGET (view)->style,
2419                           view->layout.bin_window,
2420                           GTK_WIDGET_STATE (view),
2421                           FALSE,
2422                           page_area,
2423                           GTK_WIDGET (view),
2424                           NULL,
2425                           page_area->x + 15,
2426                           page_area->y + 15,
2427                           layout);
2428
2429         pango_font_description_free (font_desc);
2430         g_object_unref (layout);
2431 }
2432
2433 static gboolean
2434 ev_view_expose_event (GtkWidget      *widget,
2435                       GdkEventExpose *event)
2436 {
2437         EvView *view = EV_VIEW (widget);
2438         int i;
2439
2440         if (view->presentation) {
2441                 switch (view->presentation_state) {
2442                         case EV_PRESENTATION_END: {
2443                                 GdkRectangle area = {0};
2444
2445                                 area.width = widget->allocation.width;
2446                                 area.height = widget->allocation.height;
2447
2448                                 draw_end_presentation_page (view, &area);
2449                         }
2450                                 return FALSE;
2451                         case EV_PRESENTATION_BLACK:
2452                         case EV_PRESENTATION_WHITE:
2453                                 return FALSE;
2454                         case EV_PRESENTATION_NORMAL:
2455                         default:
2456                                 break;
2457                 }
2458         } else if (view->loading) {
2459                 GdkRectangle area = {0};
2460
2461                 area.width = widget->allocation.width;
2462                 area.height = widget->allocation.height;
2463
2464                 draw_loading_text (view,
2465                                    &area,
2466                                    &(event->area));
2467         }
2468
2469         if (view->document == NULL)
2470                 return FALSE;
2471
2472         for (i = view->start_page; i <= view->end_page; i++) {
2473                 GdkRectangle page_area;
2474                 GtkBorder border;
2475                 gboolean page_ready = TRUE;
2476
2477                 if (!get_page_extents (view, i, &page_area, &border))
2478                         continue;
2479
2480                 page_area.x -= view->scroll_x;
2481                 page_area.y -= view->scroll_y;
2482
2483                 draw_one_page (view, i, &page_area, &border, &(event->area), &page_ready);
2484
2485                 if (page_ready && EV_IS_DOCUMENT_FIND (view->document))
2486                         highlight_find_results (view, i);
2487         }
2488
2489         if (GTK_WIDGET_CLASS (ev_view_parent_class)->expose_event)
2490                 (* GTK_WIDGET_CLASS (ev_view_parent_class)->expose_event) (widget, event);
2491
2492         return FALSE;
2493 }
2494
2495 static gboolean
2496 ev_view_do_popup_menu (EvView *view,
2497                        gdouble x,
2498                        gdouble y)
2499 {
2500         EvLink  *link;
2501         EvImage *image;
2502
2503         image = ev_view_get_image_at_location (view, x, y);
2504         if (image) {
2505                 g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, image);
2506                 return TRUE;
2507         }
2508
2509         link = ev_view_get_link_at_location (view, x, y);
2510         if (link) {
2511                 g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, link);
2512                 return TRUE;
2513         }
2514
2515         g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, NULL);
2516
2517         return TRUE;
2518 }
2519
2520 static gboolean
2521 ev_view_popup_menu (GtkWidget *widget)
2522 {
2523         gint x, y;
2524
2525         gtk_widget_get_pointer (widget, &x, &y);
2526         return ev_view_do_popup_menu (EV_VIEW (widget), x, y);
2527 }
2528
2529 static gboolean
2530 ev_view_button_press_event (GtkWidget      *widget,
2531                             GdkEventButton *event)
2532 {
2533         EvView *view = EV_VIEW (widget);
2534
2535         if (!view->document)
2536                 return FALSE;
2537
2538         if (!GTK_WIDGET_HAS_FOCUS (widget)) {
2539                 gtk_widget_grab_focus (widget);
2540         }
2541
2542         view->pressed_button = event->button;
2543         view->selection_info.in_drag = FALSE;
2544
2545         switch (event->button) {
2546                 case 1: {
2547                         EvImage *image;
2548                         EvFormField *field;
2549
2550                         if (view->selection_info.selections) {
2551                                 if (location_in_selected_text (view,
2552                                                                event->x + view->scroll_x,
2553                                                                event->y + view->scroll_y)) {
2554                                         view->selection_info.in_drag = TRUE;
2555                                 } else {
2556                                         clear_selection (view);
2557
2558                                         view->selection_info.start.x = event->x + view->scroll_x;
2559                                         view->selection_info.start.y = event->y + view->scroll_y;
2560                                 }
2561
2562                                 gtk_widget_queue_draw (widget);
2563                         } else if (!location_in_text (view, event->x + view->scroll_x, event->y + view->scroll_y) &&
2564                                    (image = ev_view_get_image_at_location (view, event->x, event->y))) {
2565                                 if (view->image_dnd_info.image)
2566                                         g_object_unref (view->image_dnd_info.image);
2567                                 view->image_dnd_info.image = g_object_ref (image);
2568                                 view->image_dnd_info.in_drag = TRUE;
2569
2570                                 view->image_dnd_info.start.x = event->x + view->scroll_x;
2571                                 view->image_dnd_info.start.y = event->y + view->scroll_y;
2572                         } else if ((field = ev_view_get_form_field_at_location (view, event->x, event->y))) {
2573                                 ev_view_remove_all (view);
2574                                 ev_view_handle_form_field (view, field, event->x, event->y);
2575                         } else {
2576                                 ev_view_remove_all (view);
2577                                 view->selection_info.start.x = event->x + view->scroll_x;
2578                                 view->selection_info.start.y = event->y + view->scroll_y;
2579                         }
2580                 }
2581                         return TRUE;
2582                 case 2:
2583                         /* use root coordinates as reference point because
2584                          * scrolling changes window relative coordinates */
2585                         view->drag_info.start.x = event->x_root;
2586                         view->drag_info.start.y = event->y_root;
2587                         view->drag_info.hadj = gtk_adjustment_get_value (view->hadjustment);
2588                         view->drag_info.vadj = gtk_adjustment_get_value (view->vadjustment);
2589
2590                         ev_view_set_cursor (view, EV_VIEW_CURSOR_DRAG);
2591
2592                         return TRUE;
2593                 case 3:
2594                         return ev_view_do_popup_menu (view, event->x, event->y);
2595         }
2596
2597         return FALSE;
2598 }
2599
2600 static void
2601 ev_view_remove_all (EvView *view)
2602 {
2603         GList *children, *child;
2604
2605         children = gtk_container_get_children (GTK_CONTAINER (view));
2606         for (child = children; child && child->data; child = g_list_next (child)) {
2607                 gtk_container_remove (GTK_CONTAINER (view),
2608                                       GTK_WIDGET (child->data));
2609         }
2610         g_list_free (children);
2611 }
2612
2613 /*** Drag and Drop ***/
2614 static void
2615 ev_view_drag_data_get (GtkWidget        *widget,
2616                        GdkDragContext   *context,
2617                        GtkSelectionData *selection_data,
2618                        guint             info,
2619                        guint             time)
2620 {
2621         EvView *view = EV_VIEW (widget);
2622
2623         switch (info) {
2624                 case TARGET_DND_TEXT:
2625                         if (view->selection_info.selections &&
2626                             ev_document_can_get_text (view->document)) {
2627                                 gchar *text;
2628
2629                                 text = get_selected_text (view);
2630
2631                                 gtk_selection_data_set_text (selection_data,
2632                                                              text,
2633                                                              strlen (text));
2634
2635                                 g_free (text);
2636                         }
2637                         break;
2638                 case TARGET_DND_IMAGE:
2639                         if (view->image_dnd_info.image) {
2640                                 GdkPixbuf *pixbuf;
2641
2642                                 pixbuf = ev_image_get_pixbuf (view->image_dnd_info.image);
2643                                 gtk_selection_data_set_pixbuf (selection_data, pixbuf);
2644                         }
2645                         break;
2646                 case TARGET_DND_URI:
2647                         if (view->image_dnd_info.image) {
2648                                 const gchar *tmp_uri;
2649                                 gchar      **uris;
2650
2651                                 tmp_uri = ev_image_save_tmp (view->image_dnd_info.image);
2652
2653                                 uris = g_new0 (gchar *, 2);
2654                                 uris[0] = (gchar *)tmp_uri;
2655
2656                                 gtk_selection_data_set_uris (selection_data, uris);
2657
2658                                 /* g_free instead of g_strfreev since tmp_uri is const */
2659                                 g_free (uris);
2660                         }
2661         }
2662 }
2663
2664 static gboolean
2665 ev_view_drag_motion (GtkWidget      *widget,
2666                      GdkDragContext *context,
2667                      gint            x,
2668                      gint            y,
2669                      guint           time)
2670 {
2671         if (gtk_drag_get_source_widget (context) == widget)
2672                 gdk_drag_status (context, 0, time);
2673         else
2674                 gdk_drag_status (context, context->suggested_action, time);
2675
2676         return TRUE;
2677 }
2678
2679 static void
2680 ev_view_drag_data_received (GtkWidget          *widget,
2681                             GdkDragContext     *context,
2682                             gint                x,
2683                             gint                y,
2684                             GtkSelectionData   *selection_data,
2685                             guint               info,
2686                             guint               time)
2687 {
2688         gchar  **uris;
2689         gint     i = 0;
2690         GSList  *uri_list = NULL;
2691
2692         uris = gtk_selection_data_get_uris (selection_data);
2693         if (!uris) {
2694                 gtk_drag_finish (context, FALSE, FALSE, time);
2695                 return;
2696         }
2697
2698         for (i = 0; uris[i]; i++) {
2699                 uri_list = g_slist_prepend (uri_list, (gpointer) uris[i]);
2700         }
2701
2702         ev_application_open_uri_list (EV_APP, uri_list,
2703                                       gtk_widget_get_screen (widget),
2704                                       0);
2705         gtk_drag_finish (context, TRUE, FALSE, time);
2706
2707         g_strfreev (uris);
2708         g_slist_free (uri_list);
2709 }
2710
2711
2712 static gboolean
2713 selection_update_idle_cb (EvView *view)
2714 {
2715         compute_selections (view, &view->selection_info.start, &view->motion);
2716         view->selection_update_id = 0;
2717         return FALSE;
2718 }
2719
2720 static gboolean
2721 selection_scroll_timeout_cb (EvView *view)
2722 {
2723         gint x, y, shift = 0;
2724         GtkWidget *widget = GTK_WIDGET (view);
2725
2726         gtk_widget_get_pointer (widget, &x, &y);
2727
2728         if (y > widget->allocation.height) {
2729                 shift = (y - widget->allocation.height) / 2;
2730         } else if (y < 0) {
2731                 shift = y / 2;
2732         }
2733
2734         if (shift)
2735                 gtk_adjustment_set_value (view->vadjustment,
2736                                           CLAMP (view->vadjustment->value + shift,
2737                                           view->vadjustment->lower,
2738                                           view->vadjustment->upper -
2739                                           view->vadjustment->page_size));
2740
2741         if (x > widget->allocation.width) {
2742                 shift = (x - widget->allocation.width) / 2;
2743         } else if (x < 0) {
2744                 shift = x / 2;
2745         }
2746
2747         if (shift)
2748                 gtk_adjustment_set_value (view->hadjustment,
2749                                           CLAMP (view->hadjustment->value + shift,
2750                                           view->hadjustment->lower,
2751                                           view->hadjustment->upper -
2752                                           view->hadjustment->page_size));
2753
2754         return TRUE;
2755 }
2756
2757 static gboolean
2758 ev_view_motion_notify_event (GtkWidget      *widget,
2759                              GdkEventMotion *event)
2760 {
2761         EvView *view = EV_VIEW (widget);
2762         gint x, y;
2763
2764         if (!view->document)
2765                 return FALSE;
2766
2767         if (event->is_hint || event->window != view->layout.bin_window) {
2768             gtk_widget_get_pointer (widget, &x, &y);
2769         } else {
2770             x = event->x;
2771             y = event->y;
2772         }
2773
2774         if (view->selection_info.in_drag) {
2775                 if (gtk_drag_check_threshold (widget,
2776                                               view->selection_info.start.x,
2777                                               view->selection_info.start.y,
2778                                               x, y)) {
2779                         GtkTargetList *target_list = gtk_target_list_new (NULL, 0);
2780
2781                         gtk_target_list_add_text_targets (target_list, TARGET_DND_TEXT);
2782
2783                         gtk_drag_begin (widget, target_list,
2784                                         GDK_ACTION_COPY,
2785                                         1, (GdkEvent *)event);
2786
2787                         view->selection_info.in_drag = FALSE;
2788
2789                         gtk_target_list_unref (target_list);
2790
2791                         return TRUE;
2792                 }
2793         } else if (view->image_dnd_info.in_drag) {
2794                 if (gtk_drag_check_threshold (widget,
2795                                               view->selection_info.start.x,
2796                                               view->selection_info.start.y,
2797                                               x, y)) {
2798                         GtkTargetList *target_list = gtk_target_list_new (NULL, 0);
2799
2800                         gtk_target_list_add_uri_targets (target_list, TARGET_DND_URI);
2801                         gtk_target_list_add_image_targets (target_list, TARGET_DND_IMAGE, TRUE);
2802
2803                         gtk_drag_begin (widget, target_list,
2804                                         GDK_ACTION_COPY,
2805                                         1, (GdkEvent *)event);
2806
2807                         view->image_dnd_info.in_drag = FALSE;
2808
2809                         gtk_target_list_unref (target_list);
2810
2811                         return TRUE;
2812                 }
2813         }
2814
2815         /* For the Evince 0.4.x release, we limit selection to un-rotated
2816          * documents only.
2817          */
2818         if (view->pressed_button == 1 && view->rotation == 0) {
2819
2820                 /* Schedule timeout to scroll during selection and additionally
2821                  * scroll once to allow arbitrary speed. */
2822                 if (!view->selection_scroll_id)
2823                     view->selection_scroll_id = g_timeout_add (SCROLL_TIME, (GSourceFunc)selection_scroll_timeout_cb, view);
2824                 else
2825                     selection_scroll_timeout_cb (view);
2826
2827                 view->selection_info.in_selection = TRUE;
2828                 view->motion.x = x + view->scroll_x;
2829                 view->motion.y = y + view->scroll_y;
2830
2831                 /* Queue an idle to handle the motion.  We do this because
2832                  * handling any selection events in the motion could be slower
2833                  * than new motion events reach us.  We always put it in the
2834                  * idle to make sure we catch up and don't visibly lag the
2835                  * mouse. */
2836                 if (!view->selection_update_id)
2837                         view->selection_update_id = g_idle_add ((GSourceFunc)selection_update_idle_cb, view);
2838
2839                 return TRUE;
2840         } else if (view->pressed_button == 2) {
2841                 if (!view->drag_info.in_drag) {
2842                         gboolean start;
2843
2844                         start = gtk_drag_check_threshold (widget,
2845                                                           view->drag_info.start.x,
2846                                                           view->drag_info.start.y,
2847                                                           event->x_root,
2848                                                           event->y_root);
2849                         view->drag_info.in_drag = start;
2850                 }
2851
2852                 if (view->drag_info.in_drag) {
2853                         int dx, dy;
2854                         gdouble dhadj_value, dvadj_value;
2855
2856                         dx = event->x_root - view->drag_info.start.x;
2857                         dy = event->y_root - view->drag_info.start.y;
2858
2859                         dhadj_value = view->hadjustment->page_size *
2860                                       (gdouble)dx / widget->allocation.width;
2861                         dvadj_value = view->vadjustment->page_size *
2862                                       (gdouble)dy / widget->allocation.height;
2863
2864                         /* clamp scrolling to visible area */
2865                         gtk_adjustment_set_value (view->hadjustment,
2866                                                   MIN(view->drag_info.hadj - dhadj_value,
2867                                                       view->hadjustment->upper -
2868                                                       view->hadjustment->page_size));
2869                         gtk_adjustment_set_value (view->vadjustment,
2870                                                   MIN(view->drag_info.vadj - dvadj_value,
2871                                                       view->vadjustment->upper -
2872                                                       view->vadjustment->page_size));
2873
2874                         return TRUE;
2875                 }
2876         } else if (view->pressed_button <= 0) {
2877                 ev_view_handle_cursor_over_xy (view, x, y);
2878                 return TRUE;
2879         }
2880
2881         return FALSE;
2882 }
2883
2884 static gboolean
2885 ev_view_button_release_event (GtkWidget      *widget,
2886                               GdkEventButton *event)
2887 {
2888         EvView *view = EV_VIEW (widget);
2889         EvLink *link;
2890
2891         if (view->pressed_button == 2) {
2892                 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
2893         }
2894
2895         if (view->document && view->pressed_button != 3) {
2896                 link = ev_view_get_link_at_location (view, event->x, event->y);
2897         } else {
2898                 link = NULL;
2899         }
2900
2901         view->pressed_button = -1;
2902         view->drag_info.in_drag = FALSE;
2903         view->image_dnd_info.in_drag = FALSE;
2904
2905         if (view->selection_scroll_id) {
2906             g_source_remove (view->selection_scroll_id);
2907             view->selection_scroll_id = 0;
2908         }
2909         if (view->selection_update_id) {
2910             g_source_remove (view->selection_update_id);
2911             view->selection_update_id = 0;
2912         }
2913
2914         if (view->selection_info.selections) {
2915                 ev_view_update_primary_selection (view);
2916
2917                 if (view->selection_info.in_drag) {
2918                         clear_selection (view);
2919                         gtk_widget_queue_draw (widget);
2920                 }
2921
2922                 view->selection_info.in_drag = FALSE;
2923         } else if (link) {
2924                 if (event->button == 2) {
2925                         EvLinkAction    *action;
2926                         EvLinkActionType type;
2927
2928                         action = ev_link_get_action (link);
2929                         if (!action)
2930                                 return FALSE;
2931
2932                         type = ev_link_action_get_action_type (action);
2933                         if (type == EV_LINK_ACTION_TYPE_GOTO_DEST) {
2934                                 g_signal_emit (view,
2935                                                signals[SIGNAL_EXTERNAL_LINK],
2936                                                0, action);
2937                         }
2938                 } else {
2939                         ev_view_handle_link (view, link);
2940                 }
2941         } else if (view->presentation) {
2942                 switch (event->button) {
2943                         case 1:
2944                                 ev_view_next_page (view);
2945                                 return TRUE;
2946                         case 3:
2947                                 ev_view_previous_page (view);
2948                                 return TRUE;
2949                 }
2950         }
2951
2952         return FALSE;
2953 }
2954
2955 /* Goto Window */
2956 /* Cut and paste from gtkwindow.c */
2957 static void
2958 send_focus_change (GtkWidget *widget,
2959                    gboolean   in)
2960 {
2961         GdkEvent *fevent = gdk_event_new (GDK_FOCUS_CHANGE);
2962
2963         g_object_ref (widget);
2964
2965         if (in)
2966                 GTK_WIDGET_SET_FLAGS (widget, GTK_HAS_FOCUS);
2967         else
2968                 GTK_WIDGET_UNSET_FLAGS (widget, GTK_HAS_FOCUS);
2969
2970         fevent->focus_change.type = GDK_FOCUS_CHANGE;
2971         fevent->focus_change.window = g_object_ref (widget->window);
2972         fevent->focus_change.in = in;
2973
2974         gtk_widget_event (widget, fevent);
2975
2976         g_object_notify (G_OBJECT (widget), "has-focus");
2977
2978         g_object_unref (widget);
2979         gdk_event_free (fevent);
2980 }
2981
2982 static void
2983 ev_view_goto_window_hide (EvView *view)
2984 {
2985         /* send focus-in event */
2986         send_focus_change (view->goto_entry, FALSE);
2987         gtk_widget_hide (view->goto_window);
2988         gtk_entry_set_text (GTK_ENTRY (view->goto_entry), "");
2989 }
2990
2991 static gboolean
2992 ev_view_goto_window_delete_event (GtkWidget   *widget,
2993                                   GdkEventAny *event,
2994                                   EvView      *view)
2995 {
2996         ev_view_goto_window_hide (view);
2997
2998         return TRUE;
2999 }
3000
3001 static gboolean
3002 key_is_numeric (guint keyval)
3003 {
3004         return ((keyval >= GDK_0 && keyval <= GDK_9) ||
3005                 (keyval >= GDK_KP_0 && keyval <= GDK_KP_9));
3006 }
3007
3008 static gboolean
3009 ev_view_goto_window_key_press_event (GtkWidget   *widget,
3010                                      GdkEventKey *event,
3011                                      EvView      *view)
3012 {
3013         switch (event->keyval) {
3014                 case GDK_Escape:
3015                 case GDK_Tab:
3016                 case GDK_KP_Tab:
3017                 case GDK_ISO_Left_Tab:
3018                         ev_view_goto_window_hide (view);
3019                         return TRUE;
3020                 case GDK_Return:
3021                 case GDK_KP_Enter:
3022                 case GDK_ISO_Enter:
3023                 case GDK_BackSpace:
3024                 case GDK_Delete:
3025                         return FALSE;
3026                 default:
3027                         if (!key_is_numeric (event->keyval))
3028                                 return TRUE;
3029         }
3030
3031         return FALSE;
3032 }
3033
3034 static gboolean
3035 ev_view_goto_window_button_press_event (GtkWidget      *widget,
3036                                         GdkEventButton *event,
3037                                         EvView         *view)
3038 {
3039         ev_view_goto_window_hide (view);
3040
3041         return TRUE;
3042 }
3043
3044 static void
3045 ev_view_goto_entry_activate (GtkEntry *entry,
3046                              EvView   *view)
3047 {
3048         const gchar *text;
3049         gint         page;
3050
3051         text = gtk_entry_get_text (entry);
3052         page = atoi (text) - 1;
3053
3054         ev_view_goto_window_hide (view);
3055
3056         if (page >= 0 &&
3057             page < ev_page_cache_get_n_pages (view->page_cache))
3058                 ev_page_cache_set_current_page (view->page_cache, page);
3059 }
3060
3061 static void
3062 ev_view_goto_window_create (EvView *view)
3063 {
3064         GtkWidget *frame, *hbox, *toplevel, *label;
3065
3066         toplevel = gtk_widget_get_toplevel (GTK_WIDGET (view));
3067
3068         if (view->goto_window) {
3069                 if (GTK_WINDOW (toplevel)->group)
3070                         gtk_window_group_add_window (GTK_WINDOW (toplevel)->group,
3071                                                      GTK_WINDOW (view->goto_window));
3072                 else if (GTK_WINDOW (view->goto_window)->group)
3073                         gtk_window_group_remove_window (GTK_WINDOW (view->goto_window)->group,
3074                                                         GTK_WINDOW (view->goto_window));
3075                 return;
3076         }
3077
3078         view->goto_window = gtk_window_new (GTK_WINDOW_POPUP);
3079
3080         if (GTK_WINDOW (toplevel)->group)
3081                 gtk_window_group_add_window (GTK_WINDOW (toplevel)->group,
3082                                              GTK_WINDOW (view->goto_window));
3083
3084         gtk_window_set_modal (GTK_WINDOW (view->goto_window), TRUE);
3085
3086         g_signal_connect (view->goto_window, "delete_event",
3087                           G_CALLBACK (ev_view_goto_window_delete_event),
3088                           view);
3089         g_signal_connect (view->goto_window, "key_press_event",
3090                           G_CALLBACK (ev_view_goto_window_key_press_event),
3091                           view);
3092         g_signal_connect (view->goto_window, "button_press_event",
3093                           G_CALLBACK (ev_view_goto_window_button_press_event),
3094                           view);
3095
3096         frame = gtk_frame_new (NULL);
3097         gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_ETCHED_IN);
3098         gtk_container_add (GTK_CONTAINER (view->goto_window), frame);
3099         gtk_widget_show (frame);
3100
3101         hbox = gtk_hbox_new (FALSE, 0);
3102         gtk_container_set_border_width (GTK_CONTAINER (hbox), 3);
3103         gtk_container_add (GTK_CONTAINER (frame), hbox);
3104         gtk_widget_show (hbox);
3105
3106         label = gtk_label_new(_("Jump to page:"));
3107         gtk_box_pack_start (GTK_BOX (hbox), label, TRUE, TRUE, 3);
3108         gtk_widget_show (label);
3109         gtk_widget_realize (label);
3110
3111         view->goto_entry = gtk_entry_new ();
3112         g_signal_connect (view->goto_entry, "activate",
3113                           G_CALLBACK (ev_view_goto_entry_activate),
3114                           view);
3115         gtk_box_pack_start_defaults (GTK_BOX (hbox), view->goto_entry);
3116         gtk_widget_show (view->goto_entry);
3117         gtk_widget_realize (view->goto_entry);
3118 }
3119
3120 static void
3121 ev_view_goto_entry_grab_focus (EvView *view)
3122 {
3123         GtkWidgetClass *entry_parent_class;
3124
3125         entry_parent_class = g_type_class_peek_parent (GTK_ENTRY_GET_CLASS (view->goto_entry));
3126         (entry_parent_class->grab_focus) (view->goto_entry);
3127
3128         send_focus_change (view->goto_entry, TRUE);
3129 }
3130
3131 static void
3132 ev_view_goto_window_send_key_event (EvView   *view,
3133                                     GdkEvent *event)
3134 {
3135         GdkEventKey *new_event;
3136         GdkScreen   *screen;
3137
3138         /* Move goto window off screen */
3139         screen = gtk_widget_get_screen (GTK_WIDGET (view));
3140         gtk_window_move (GTK_WINDOW (view->goto_window),
3141                          gdk_screen_get_width (screen) + 1,
3142                          gdk_screen_get_height (screen) + 1);
3143         gtk_widget_show (view->goto_window);
3144
3145         new_event = (GdkEventKey *) gdk_event_copy (event);
3146         g_object_unref (new_event->window);
3147         new_event->window = g_object_ref (view->goto_window->window);
3148         gtk_widget_realize (view->goto_window);
3149
3150         gtk_widget_event (view->goto_window, (GdkEvent *)new_event);
3151         gdk_event_free ((GdkEvent *)new_event);
3152         gtk_widget_hide (view->goto_window);
3153 }
3154
3155 static gboolean
3156 ev_view_key_press_event (GtkWidget   *widget,
3157                          GdkEventKey *event)
3158 {
3159         EvView *view = EV_VIEW (widget);
3160         EvPresentationState current;
3161
3162         if (!view->document)
3163                 return FALSE;
3164
3165         if (!view->presentation ||
3166             view->presentation_state == EV_PRESENTATION_END)
3167                 return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
3168
3169
3170         current = view->presentation_state;
3171
3172         switch (event->keyval) {
3173                 case GDK_b:
3174                 case GDK_B:
3175                         view->presentation_state =
3176                                 (view->presentation_state == EV_PRESENTATION_BLACK) ?
3177                                 EV_PRESENTATION_NORMAL : EV_PRESENTATION_BLACK;
3178                         break;
3179                 case GDK_w:
3180                 case GDK_W:
3181                         view->presentation_state =
3182                                 (view->presentation_state == EV_PRESENTATION_WHITE) ?
3183                                 EV_PRESENTATION_NORMAL : EV_PRESENTATION_WHITE;
3184                         break;
3185                 default:
3186                         if (view->presentation_state == EV_PRESENTATION_BLACK ||
3187                             view->presentation_state == EV_PRESENTATION_WHITE) {
3188                                 view->presentation_state = EV_PRESENTATION_NORMAL;
3189                         }
3190         }
3191
3192         if (current == view->presentation_state) {
3193                 if (ev_page_cache_get_n_pages (view->page_cache) > 1 &&
3194                     key_is_numeric (event->keyval)) {
3195                         gint x, y;
3196
3197                         ev_view_goto_window_create (view);
3198                         ev_view_goto_window_send_key_event (view, (GdkEvent *)event);
3199                         gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
3200                         gtk_window_move (GTK_WINDOW (view->goto_window), x, y);
3201                         gtk_widget_show (view->goto_window);
3202                         ev_view_goto_entry_grab_focus (view);
3203
3204                         return TRUE;
3205                 }
3206
3207                 return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
3208         }
3209
3210         switch (view->presentation_state) {
3211                 case EV_PRESENTATION_NORMAL:
3212                 case EV_PRESENTATION_BLACK:
3213                         gdk_window_set_background (view->layout.bin_window,
3214                                                    &widget->style->black);
3215                         break;
3216                 case EV_PRESENTATION_WHITE:
3217                         gdk_window_set_background (view->layout.bin_window,
3218                                                    &widget->style->white);
3219                         break;
3220                 default:
3221                         return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
3222         }
3223
3224         gtk_widget_queue_draw (widget);
3225         return TRUE;
3226 }
3227
3228 static gint
3229 ev_view_focus_in (GtkWidget     *widget,
3230                   GdkEventFocus *event)
3231 {
3232         if (EV_VIEW (widget)->pixbuf_cache)
3233                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
3234         gtk_widget_queue_draw (widget);
3235
3236         return FALSE;
3237 }
3238
3239 static gint
3240 ev_view_focus_out (GtkWidget     *widget,
3241                      GdkEventFocus *event)
3242 {
3243         if (EV_VIEW (widget)->goto_window)
3244                 ev_view_goto_window_hide (EV_VIEW (widget));
3245
3246         if (EV_VIEW (widget)->pixbuf_cache)
3247                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
3248         gtk_widget_queue_draw (widget);
3249
3250         return FALSE;
3251 }
3252
3253 static gboolean
3254 ev_view_leave_notify_event (GtkWidget *widget, GdkEventCrossing   *event)
3255 {
3256         EvView *view = EV_VIEW (widget);
3257
3258         if (view->cursor == EV_VIEW_CURSOR_LINK ||
3259             view->cursor == EV_VIEW_CURSOR_IBEAM)
3260                 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
3261
3262         if (view->link_tooltip) {
3263                 view->hovered_link = NULL;
3264                 ev_tooltip_deactivate (EV_TOOLTIP (view->link_tooltip));
3265         }
3266
3267         return FALSE;
3268 }
3269
3270 static gboolean
3271 ev_view_enter_notify_event (GtkWidget *widget, GdkEventCrossing   *event)
3272 {
3273         EvView *view = EV_VIEW (widget);
3274
3275         ev_view_handle_cursor_over_xy (view, event->x, event->y);
3276
3277         return FALSE;
3278 }
3279
3280 static void
3281 ev_view_style_set (GtkWidget *widget,
3282                    GtkStyle  *old_style)
3283 {
3284         if (EV_VIEW (widget)->pixbuf_cache)
3285                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
3286
3287         GTK_WIDGET_CLASS (ev_view_parent_class)->style_set (widget, old_style);
3288 }
3289
3290 /*** Drawing ***/
3291
3292 static guint32
3293 ev_gdk_color_to_rgb (const GdkColor *color)
3294 {
3295   guint32 result;
3296   result = (0xff0000 | (color->red & 0xff00));
3297   result <<= 8;
3298   result |= ((color->green & 0xff00) | (color->blue >> 8));
3299   return result;
3300 }
3301
3302 static void
3303 draw_rubberband (GtkWidget *widget, GdkWindow *window,
3304                  const GdkRectangle *rect, guchar alpha)
3305 {
3306         GdkGC *gc;
3307         GdkPixbuf *pixbuf;
3308         GdkColor *fill_color_gdk;
3309         guint fill_color;
3310
3311         fill_color_gdk = gdk_color_copy (&GTK_WIDGET (widget)->style->base[GTK_STATE_SELECTED]);
3312         fill_color = ev_gdk_color_to_rgb (fill_color_gdk) << 8 | alpha;
3313
3314         pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE, 8,
3315                                  rect->width, rect->height);
3316         gdk_pixbuf_fill (pixbuf, fill_color);
3317
3318         gdk_draw_pixbuf (window, NULL, pixbuf,
3319                          0, 0,
3320                          rect->x - EV_VIEW (widget)->scroll_x, rect->y - EV_VIEW (widget)->scroll_y,
3321                          rect->width, rect->height,
3322                          GDK_RGB_DITHER_NONE,
3323                          0, 0);
3324
3325         g_object_unref (pixbuf);
3326
3327         gc = gdk_gc_new (window);
3328         gdk_gc_set_rgb_fg_color (gc, fill_color_gdk);
3329         gdk_draw_rectangle (window, gc, FALSE,
3330                             rect->x - EV_VIEW (widget)->scroll_x, rect->y - EV_VIEW (widget)->scroll_y,
3331                             rect->width - 1,
3332                             rect->height - 1);
3333         g_object_unref (gc);
3334
3335         gdk_color_free (fill_color_gdk);
3336 }
3337
3338
3339 static void
3340 highlight_find_results (EvView *view, int page)
3341 {
3342         EvDocumentFind *find;
3343         int i, results = 0;
3344
3345         find = EV_DOCUMENT_FIND (view->document);
3346
3347         results = ev_document_find_get_n_results (find, page);
3348
3349         for (i = 0; i < results; i++) {
3350                 EvRectangle rectangle;
3351                 GdkRectangle view_rectangle;
3352                 guchar alpha;
3353
3354                 if (i == view->find_result && page == view->current_page) {
3355                         alpha = 0x90;
3356                 } else {
3357                         alpha = 0x20;
3358                 }
3359
3360                 ev_document_find_get_result (find, page, i, &rectangle);
3361                 doc_rect_to_view_rect (view, page, &rectangle, &view_rectangle);
3362                 draw_rubberband (GTK_WIDGET (view), view->layout.bin_window,
3363                                  &view_rectangle, alpha);
3364         }
3365 }
3366
3367 static void
3368 draw_loading_text (EvView       *view,
3369                    GdkRectangle *page_area,
3370                    GdkRectangle *expose_area)
3371 {
3372         cairo_t *cr;
3373         gint     width, height;
3374
3375         /* Don't annoy users with loading messages during presentations.
3376          * FIXME: Temporary "workaround" for
3377          * http://bugzilla.gnome.org/show_bug.cgi?id=320352 */
3378         if (view->presentation)
3379                 return;
3380
3381         if (!view->loading_text) {
3382                 const gchar *loading_text = _("Loading...");
3383                 PangoLayout *layout;
3384                 PangoFontDescription *font_desc;
3385                 PangoRectangle logical_rect;
3386                 gint target_width;
3387                 gdouble real_scale;
3388
3389                 ev_document_fc_mutex_lock ();
3390
3391                 layout = gtk_widget_create_pango_layout (GTK_WIDGET (view), loading_text);
3392
3393                 font_desc = pango_font_description_new ();
3394
3395                 /* We set the font to be 10 points, get the size, and scale appropriately */
3396                 pango_font_description_set_size (font_desc, 10 * PANGO_SCALE);
3397                 pango_layout_set_font_description (layout, font_desc);
3398                 pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
3399
3400                 target_width = MAX (page_area->width / 2, 1);
3401                 real_scale = ((double)target_width / (double) logical_rect.width) * (PANGO_SCALE * 10);
3402                 pango_font_description_set_size (font_desc, (int)real_scale);
3403                 pango_layout_set_font_description (layout, font_desc);
3404                 pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
3405
3406                 view->loading_text = cairo_image_surface_create (CAIRO_FORMAT_ARGB32,
3407                                                                  logical_rect.width,
3408                                                                  logical_rect.height);
3409                 cr = cairo_create (view->loading_text);
3410                 cairo_set_source_rgb (cr,
3411                                       155 / (double)255,
3412                                       155 / (double)255,
3413                                       155 / (double)255);
3414                 pango_cairo_show_layout (cr, layout);
3415                 cairo_destroy (cr);
3416
3417                 pango_font_description_free (font_desc);
3418                 g_object_unref (layout);
3419
3420                 ev_document_fc_mutex_unlock ();
3421         }
3422
3423         width = (page_area->width - cairo_image_surface_get_width (view->loading_text)) / 2;
3424         height = (page_area->height - cairo_image_surface_get_height (view->loading_text)) / 2;
3425
3426         cr = gdk_cairo_create (view->layout.bin_window);
3427         cairo_translate (cr,
3428                          page_area->x + width,
3429                          page_area->y + height);
3430         cairo_set_source_surface (cr, view->loading_text, 0, 0);
3431         cairo_paint (cr);
3432         cairo_destroy (cr);
3433 }
3434
3435 static void
3436 draw_one_page (EvView       *view,
3437                gint          page,
3438                GdkRectangle *page_area,
3439                GtkBorder    *border,
3440                GdkRectangle *expose_area,
3441                gboolean     *page_ready)
3442 {
3443         GdkRectangle overlap;
3444         GdkRectangle real_page_area;
3445
3446         g_assert (view->document);
3447
3448         if (! gdk_rectangle_intersect (page_area, expose_area, &overlap))
3449                 return;
3450
3451         /* Render the document itself */
3452         real_page_area = *page_area;
3453
3454         real_page_area.x += border->left;
3455         real_page_area.y += border->top;
3456         real_page_area.width -= (border->left + border->right);
3457         real_page_area.height -= (border->top + border->bottom);
3458         *page_ready = TRUE;
3459
3460         if (!view->presentation) {
3461                 gint current_page;
3462
3463                 current_page = ev_page_cache_get_current_page (view->page_cache);
3464                 ev_document_misc_paint_one_page (view->layout.bin_window,
3465                                                  GTK_WIDGET (view),
3466                                                  page_area, border,
3467                                                  page == current_page);
3468         }
3469
3470         if (gdk_rectangle_intersect (&real_page_area, expose_area, &overlap)) {
3471                 gint             width, height;
3472                 gint             page_width, page_height;
3473                 cairo_surface_t *page_surface = NULL;
3474                 gint             selection_width, selection_height;
3475                 cairo_surface_t *selection_surface = NULL;
3476                 cairo_t         *cr = NULL;
3477
3478                 page_surface = ev_pixbuf_cache_get_surface (view->pixbuf_cache, page);
3479
3480                 if (!page_surface) {
3481                         draw_loading_text (view,
3482                                            &real_page_area,
3483                                            expose_area);
3484                         *page_ready = FALSE;
3485
3486                         return;
3487                 }
3488
3489                 ev_page_cache_get_size (view->page_cache,
3490                                         page, view->rotation,
3491                                         view->scale,
3492                                         &width, &height);
3493
3494                 cr = gdk_cairo_create (view->layout.bin_window);
3495
3496                 cairo_save (cr);
3497
3498                 page_width = cairo_image_surface_get_width (page_surface);
3499                 page_height = cairo_image_surface_get_height (page_surface);
3500
3501                 cairo_rectangle (cr, overlap.x, overlap.y, overlap.width, overlap.height);
3502                 cairo_clip (cr);
3503
3504                 cairo_translate (cr, overlap.x, overlap.y);
3505
3506                 if (width != page_width || height != page_height) {
3507                         cairo_pattern_set_filter (cairo_get_source (cr),
3508                                                   CAIRO_FILTER_FAST);
3509                         cairo_scale (cr,
3510                                      (gdouble)width / page_width,
3511                                      (gdouble)height / page_height);
3512                 }
3513
3514                 cairo_surface_set_device_offset (page_surface,
3515                                                  overlap.x - real_page_area.x,
3516                                                  overlap.y - real_page_area.y);
3517
3518                 cairo_set_source_surface (cr, page_surface, 0, 0);
3519                 cairo_paint (cr);
3520
3521                 cairo_restore (cr);
3522
3523                 /* Get the selection pixbuf iff we have something to draw */
3524                 if (find_selection_for_page (view, page) &&
3525                     view->selection_mode == EV_VIEW_SELECTION_TEXT) {
3526                         selection_surface =
3527                                 ev_pixbuf_cache_get_selection_surface (view->pixbuf_cache,
3528                                                                        page,
3529                                                                        view->scale,
3530                                                                        NULL);
3531                 }
3532
3533                 if (!selection_surface) {
3534                         cairo_destroy (cr);
3535                         return;
3536                 }
3537
3538                 selection_width = cairo_image_surface_get_width (selection_surface);
3539                 selection_height = cairo_image_surface_get_height (selection_surface);
3540
3541                 cairo_rectangle (cr, overlap.x, overlap.y, overlap.width, overlap.height);
3542                 cairo_clip (cr);
3543
3544                 cairo_translate (cr, overlap.x, overlap.y);
3545
3546                 if (width != selection_width || height != selection_height) {
3547                         cairo_pattern_set_filter (cairo_get_source (cr),
3548                                                   CAIRO_FILTER_FAST);
3549                         cairo_scale (cr,
3550                                      (gdouble)width / selection_width,
3551                                      (gdouble)height / selection_height);
3552                 }
3553
3554                 cairo_surface_set_device_offset (selection_surface,
3555                                                  overlap.x - real_page_area.x,
3556                                                  overlap.y - real_page_area.y);
3557
3558                 cairo_set_source_surface (cr, selection_surface, 0, 0);
3559                 cairo_paint (cr);
3560                 cairo_destroy (cr);
3561         }
3562 }
3563
3564 /*** GObject functions ***/
3565
3566 static void
3567 ev_view_finalize (GObject *object)
3568 {
3569         EvView *view = EV_VIEW (object);
3570
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_FIND_STATUS:
3706                         g_value_set_string (value, view->find_status);
3707                         break;
3708                 case PROP_CONTINUOUS:
3709                         g_value_set_boolean (value, view->continuous);
3710                         break;
3711                 case PROP_DUAL_PAGE:
3712                         g_value_set_boolean (value, view->dual_page);
3713                         break;
3714                 case PROP_FULLSCREEN:
3715                         g_value_set_boolean (value, view->fullscreen);
3716                         break;
3717                 case PROP_PRESENTATION:
3718                         g_value_set_boolean (value, view->presentation);
3719                         break;
3720                 case PROP_SIZING_MODE:
3721                         g_value_set_enum (value, view->sizing_mode);
3722                         break;
3723                 case PROP_ZOOM:
3724                         g_value_set_double (value, view->scale);
3725                         break;
3726                 case PROP_ROTATION:
3727                         g_value_set_int (value, view->rotation);
3728                         break;
3729                 case PROP_HAS_SELECTION:
3730                         g_value_set_boolean (value,
3731                                              view->selection_info.selections != NULL);
3732                         break;
3733                 default:
3734                         G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
3735         }
3736 }
3737
3738 static void
3739 ev_view_class_init (EvViewClass *class)
3740 {
3741         GObjectClass *object_class = G_OBJECT_CLASS (class);
3742         GtkObjectClass *gtk_object_class = GTK_OBJECT_CLASS (class);
3743         GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
3744         GtkLayoutClass *layout_class = GTK_LAYOUT_CLASS (class);
3745         GtkBindingSet *binding_set;
3746
3747         object_class->finalize = ev_view_finalize;
3748         object_class->set_property = ev_view_set_property;
3749         object_class->get_property = ev_view_get_property;
3750
3751         widget_class->expose_event = ev_view_expose_event;
3752         widget_class->button_press_event = ev_view_button_press_event;
3753         widget_class->motion_notify_event = ev_view_motion_notify_event;
3754         widget_class->button_release_event = ev_view_button_release_event;
3755         widget_class->key_press_event = ev_view_key_press_event;
3756         widget_class->focus_in_event = ev_view_focus_in;
3757         widget_class->focus_out_event = ev_view_focus_out;
3758         widget_class->get_accessible = ev_view_get_accessible;
3759         widget_class->size_request = ev_view_size_request;
3760         widget_class->size_allocate = ev_view_size_allocate;
3761         widget_class->realize = ev_view_realize;
3762         widget_class->scroll_event = ev_view_scroll_event;
3763         widget_class->enter_notify_event = ev_view_enter_notify_event;
3764         widget_class->leave_notify_event = ev_view_leave_notify_event;
3765         widget_class->style_set = ev_view_style_set;
3766         widget_class->drag_data_get = ev_view_drag_data_get;
3767         widget_class->drag_motion = ev_view_drag_motion;
3768         widget_class->drag_data_received = ev_view_drag_data_received;
3769         widget_class->popup_menu = ev_view_popup_menu;
3770
3771         gtk_object_class->destroy = ev_view_destroy;
3772
3773         layout_class->set_scroll_adjustments = ev_view_set_scroll_adjustments;
3774
3775         class->binding_activated = ev_view_scroll;
3776
3777         signals[SIGNAL_BINDING_ACTIVATED] = g_signal_new ("binding_activated",
3778                          G_TYPE_FROM_CLASS (object_class),
3779                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
3780                          G_STRUCT_OFFSET (EvViewClass, binding_activated),
3781                          NULL, NULL,
3782                          ev_marshal_VOID__ENUM_BOOLEAN,
3783                          G_TYPE_NONE, 2,
3784                          GTK_TYPE_SCROLL_TYPE,
3785                          G_TYPE_BOOLEAN);
3786
3787         signals[SIGNAL_ZOOM_INVALID] = g_signal_new ("zoom-invalid",
3788                          G_TYPE_FROM_CLASS (object_class),
3789                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
3790                          G_STRUCT_OFFSET (EvViewClass, zoom_invalid),
3791                          NULL, NULL,
3792                          ev_marshal_VOID__VOID,
3793                          G_TYPE_NONE, 0, G_TYPE_NONE);
3794         signals[SIGNAL_HANDLE_LINK] = g_signal_new ("handle-link",
3795                          G_TYPE_FROM_CLASS (object_class),
3796                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
3797                          G_STRUCT_OFFSET (EvViewClass, handle_link),
3798                          NULL, NULL,
3799                          g_cclosure_marshal_VOID__OBJECT,
3800                          G_TYPE_NONE, 1,
3801                          G_TYPE_OBJECT);
3802         signals[SIGNAL_EXTERNAL_LINK] = g_signal_new ("external-link",
3803                          G_TYPE_FROM_CLASS (object_class),
3804                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
3805                          G_STRUCT_OFFSET (EvViewClass, external_link),
3806                          NULL, NULL,
3807                          g_cclosure_marshal_VOID__OBJECT,
3808                          G_TYPE_NONE, 1,
3809                          G_TYPE_OBJECT);
3810         signals[SIGNAL_POPUP_MENU] = g_signal_new ("popup",
3811                          G_TYPE_FROM_CLASS (object_class),
3812                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
3813                          G_STRUCT_OFFSET (EvViewClass, popup_menu),
3814                          NULL, NULL,
3815                          g_cclosure_marshal_VOID__OBJECT,
3816                          G_TYPE_NONE, 1,
3817                          G_TYPE_OBJECT);
3818
3819
3820         g_object_class_install_property (object_class,
3821                                          PROP_FIND_STATUS,
3822                                          g_param_spec_string ("find-status",
3823                                                               "Find Status Message",
3824                                                               "The find status message",
3825                                                               NULL,
3826                                                               G_PARAM_READABLE));
3827
3828         g_object_class_install_property (object_class,
3829                                          PROP_CONTINUOUS,
3830                                          g_param_spec_boolean ("continuous",
3831                                                                "Continuous",
3832                                                                "Continuous scrolling mode",
3833                                                                TRUE,
3834                                                                G_PARAM_READWRITE));
3835
3836         g_object_class_install_property (object_class,
3837                                          PROP_DUAL_PAGE,
3838                                          g_param_spec_boolean ("dual-page",
3839                                                                "Dual Page",
3840                                                                "Two pages visible at once",
3841                                                                FALSE,
3842                                                                G_PARAM_READWRITE));
3843         g_object_class_install_property (object_class,
3844                                          PROP_FULLSCREEN,
3845                                          g_param_spec_boolean ("fullscreen",
3846                                                                "Full Screen",
3847                                                                "Draw page in a fullscreen fashion",
3848                                                                FALSE,
3849                                                                G_PARAM_READWRITE));
3850         g_object_class_install_property (object_class,
3851                                          PROP_PRESENTATION,
3852                                          g_param_spec_boolean ("presentation",
3853                                                                "Presentation",
3854                                                                "Draw page in presentation mode",
3855                                                                TRUE,
3856                                                                G_PARAM_READWRITE));
3857
3858         g_object_class_install_property (object_class,
3859                                          PROP_SIZING_MODE,
3860                                          g_param_spec_enum ("sizing-mode",
3861                                                             "Sizing Mode",
3862                                                             "Sizing Mode",
3863                                                             EV_TYPE_SIZING_MODE,
3864                                                             EV_SIZING_FIT_WIDTH,
3865                                                             G_PARAM_READWRITE));
3866
3867         g_object_class_install_property (object_class,
3868                                          PROP_ZOOM,
3869                                          g_param_spec_double ("zoom",
3870                                                               "Zoom factor",
3871                                                               "Zoom factor",
3872                                                               0,
3873                                                               G_MAXDOUBLE,
3874                                                               1.0,
3875                                                               G_PARAM_READWRITE));
3876         g_object_class_install_property (object_class,
3877                                          PROP_ROTATION,
3878                                          g_param_spec_double ("rotation",
3879                                                               "Rotation",
3880                                                               "Rotation",
3881                                                               0,
3882                                                               360,
3883                                                               0,
3884                                                               G_PARAM_READWRITE));
3885         g_object_class_install_property (object_class,
3886                                          PROP_HAS_SELECTION,
3887                                          g_param_spec_boolean ("has-selection",
3888                                                                "Has selection",
3889                                                                "The view has selections",
3890                                                                FALSE,
3891                                                                G_PARAM_READABLE));
3892
3893         binding_set = gtk_binding_set_by_class (class);
3894
3895         add_scroll_binding_keypad (binding_set, GDK_Left,  0, EV_SCROLL_STEP_BACKWARD, TRUE);
3896         add_scroll_binding_keypad (binding_set, GDK_Right, 0, EV_SCROLL_STEP_FORWARD,  TRUE);
3897         add_scroll_binding_keypad (binding_set, GDK_Left,  GDK_MOD1_MASK, EV_SCROLL_STEP_DOWN, TRUE);
3898         add_scroll_binding_keypad (binding_set, GDK_Right, GDK_MOD1_MASK, EV_SCROLL_STEP_UP,  TRUE);
3899         add_scroll_binding_keypad (binding_set, GDK_Up,    0, EV_SCROLL_STEP_BACKWARD, FALSE);
3900         add_scroll_binding_keypad (binding_set, GDK_Down,  0, EV_SCROLL_STEP_FORWARD,  FALSE);
3901         add_scroll_binding_keypad (binding_set, GDK_Up,    GDK_MOD1_MASK, EV_SCROLL_STEP_DOWN, FALSE);
3902         add_scroll_binding_keypad (binding_set, GDK_Down,  GDK_MOD1_MASK, EV_SCROLL_STEP_UP,  FALSE);
3903 }
3904
3905 static void
3906 ev_view_init (EvView *view)
3907 {
3908         GTK_WIDGET_SET_FLAGS (view, GTK_CAN_FOCUS);
3909
3910         view->spacing = 5;
3911         view->scale = 1.0;
3912         view->current_page = 0;
3913         view->pressed_button = -1;
3914         view->cursor = EV_VIEW_CURSOR_NORMAL;
3915         view->drag_info.in_drag = FALSE;
3916         view->selection_info.selections = NULL;
3917         view->selection_info.in_selection = FALSE;
3918         view->selection_info.in_drag = FALSE;
3919         view->selection_mode = EV_VIEW_SELECTION_TEXT;
3920         view->continuous = TRUE;
3921         view->dual_page = FALSE;
3922         view->presentation = FALSE;
3923         view->presentation_state = EV_PRESENTATION_NORMAL;
3924         view->fullscreen = FALSE;
3925         view->sizing_mode = EV_SIZING_FIT_WIDTH;
3926         view->pending_scroll = SCROLL_TO_KEEP_POSITION;
3927         view->jump_to_find_result = TRUE;
3928
3929         gtk_layout_set_hadjustment (GTK_LAYOUT (view), NULL);
3930         gtk_layout_set_vadjustment (GTK_LAYOUT (view), NULL);
3931
3932         gtk_drag_dest_set (GTK_WIDGET (view),
3933                            GTK_DEST_DEFAULT_ALL,
3934                            view_drop_targets,
3935                            G_N_ELEMENTS (view_drop_targets),
3936                            GDK_ACTION_COPY);
3937 }
3938
3939 /*** Callbacks ***/
3940
3941 static void
3942 find_changed_cb (EvDocument *document, int page, EvView *view)
3943 {
3944         double percent;
3945         int n_pages;
3946
3947         percent = ev_document_find_get_progress
3948                         (EV_DOCUMENT_FIND (view->document));
3949         n_pages = ev_page_cache_get_n_pages (view->page_cache);
3950
3951         if (view->jump_to_find_result == TRUE) {
3952                 jump_to_find_page (view, EV_VIEW_FIND_NEXT, 0);
3953                 jump_to_find_result (view);
3954         }
3955         update_find_status_message (view, percent * n_pages >= n_pages - 1 );
3956         if (view->current_page == page)
3957                 gtk_widget_queue_draw (GTK_WIDGET (view));
3958 }
3959
3960 static void
3961 job_finished_cb (EvPixbufCache *pixbuf_cache,
3962                  GdkRegion     *region,
3963                  EvView        *view)
3964 {
3965         if (region) {
3966                 gdk_window_invalidate_region (view->layout.bin_window,
3967                                               region, TRUE);
3968         } else {
3969                 gtk_widget_queue_draw (GTK_WIDGET (view));
3970         }
3971 }
3972
3973 static void
3974 page_changed_cb (EvPageCache *page_cache,
3975                  int          new_page,
3976                  EvView      *view)
3977 {
3978         if (view->current_page != new_page) {
3979                 gint x, y;
3980
3981                 view->current_page = new_page;
3982                 view->pending_scroll = SCROLL_TO_PAGE_POSITION;
3983
3984                 if (view->presentation)
3985                         ev_view_presentation_transition_start (view);
3986
3987                 gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
3988                 ev_view_handle_cursor_over_xy (view, x, y);
3989
3990                 gtk_widget_queue_resize (GTK_WIDGET (view));
3991         } else {
3992                 gtk_widget_queue_draw (GTK_WIDGET (view));
3993         }
3994
3995         if (EV_IS_DOCUMENT_FIND (view->document)) {
3996                 view->find_result = 0;
3997                 update_find_status_message (view, TRUE);
3998         }
3999 }
4000
4001 static void
4002 on_adjustment_value_changed (GtkAdjustment *adjustment,
4003                              EvView        *view)
4004 {
4005         int dx = 0, dy = 0;
4006         gint x, y;
4007         GList *children, *l;
4008
4009         if (! GTK_WIDGET_REALIZED (view))
4010                 return;
4011
4012         if (view->hadjustment) {
4013                 dx = view->scroll_x - (int) view->hadjustment->value;
4014                 view->scroll_x = (int) view->hadjustment->value;
4015         } else {
4016                 view->scroll_x = 0;
4017         }
4018
4019         if (view->vadjustment) {
4020                 dy = view->scroll_y - (int) view->vadjustment->value;
4021                 view->scroll_y = (int) view->vadjustment->value;
4022         } else {
4023                 view->scroll_y = 0;
4024         }
4025
4026         children = gtk_container_get_children (GTK_CONTAINER (view));
4027         for (l = children; l && l->data; l = g_list_next (l)) {
4028                 gint       child_x, child_y;
4029                 GtkWidget *child = (GtkWidget *)l->data;
4030
4031                 gtk_container_child_get (GTK_CONTAINER (view),
4032                                          child,
4033                                          "x", &child_x,
4034                                          "y", &child_y,
4035                                          NULL);
4036                 gtk_layout_move (GTK_LAYOUT (view), child, child_x + dx, child_y + dy);
4037         }
4038         g_list_free (children);
4039
4040         if (view->pending_resize)
4041                 gtk_widget_queue_draw (GTK_WIDGET (view));
4042         else
4043                 gdk_window_scroll (view->layout.bin_window, dx, dy);
4044
4045         gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
4046         ev_view_handle_cursor_over_xy (view, x, y);
4047
4048         if (view->document)
4049                 view_update_range_and_current_page (view);
4050 }
4051
4052 GtkWidget*
4053 ev_view_new (void)
4054 {
4055         GtkWidget *view;
4056
4057         view = g_object_new (EV_TYPE_VIEW, NULL);
4058
4059         return view;
4060 }
4061
4062 static void
4063 setup_caches (EvView *view)
4064 {
4065         view->page_cache = ev_page_cache_get (view->document);
4066         g_signal_connect (view->page_cache, "page-changed", G_CALLBACK (page_changed_cb), view);
4067         view->pixbuf_cache = ev_pixbuf_cache_new (GTK_WIDGET (view), view->document);
4068         g_signal_connect (view->pixbuf_cache, "job-finished", G_CALLBACK (job_finished_cb), view);
4069         page_changed_cb (view->page_cache,
4070                          ev_page_cache_get_current_page (view->page_cache),
4071                          view);
4072 }
4073
4074 static void
4075 clear_caches (EvView *view)
4076 {
4077         if (view->pixbuf_cache) {
4078                 g_object_unref (view->pixbuf_cache);
4079                 view->pixbuf_cache = NULL;
4080         }
4081
4082         if (view->page_cache) {
4083                 view->page_cache = NULL;
4084         }
4085 }
4086
4087 void
4088 ev_view_set_loading (EvView       *view,
4089                      gboolean      loading)
4090 {
4091         view->loading = loading;
4092         gtk_widget_queue_draw (GTK_WIDGET (view));
4093 }
4094
4095 void
4096 ev_view_set_document (EvView     *view,
4097                       EvDocument *document)
4098 {
4099         g_return_if_fail (EV_IS_VIEW (view));
4100
4101         view->loading = FALSE;
4102
4103         if (document != view->document) {
4104                 clear_caches (view);
4105
4106                 if (view->document) {
4107                         g_signal_handlers_disconnect_by_func (view->document,
4108                                                               find_changed_cb,
4109                                                               view);
4110                         g_object_unref (view->document);
4111                         view->page_cache = NULL;
4112
4113                 }
4114
4115                 view->document = document;
4116                 view->find_result = 0;
4117
4118                 if (view->document) {
4119                         g_object_ref (view->document);
4120                         if (EV_IS_DOCUMENT_FIND (view->document)) {
4121                                 g_signal_connect (view->document,
4122                                                   "find_changed",
4123                                                   G_CALLBACK (find_changed_cb),
4124                                                   view);
4125                         }
4126
4127                         setup_caches (view);
4128                 }
4129
4130                 gtk_widget_queue_resize (GTK_WIDGET (view));
4131         }
4132 }
4133
4134 /*** Zoom and sizing mode ***/
4135
4136 #define EPSILON 0.0000001
4137 void
4138 ev_view_set_zoom (EvView   *view,
4139                   double    factor,
4140                   gboolean  relative)
4141 {
4142         double scale;
4143
4144         if (relative)
4145                 scale = view->scale * factor;
4146         else
4147                 scale = factor;
4148
4149         scale = CLAMP (scale, view->min_scale, view->max_scale);
4150
4151         if (ABS (view->scale - scale) < EPSILON)
4152                 return;
4153
4154         if (view->loading_text) {
4155                 cairo_surface_destroy (view->loading_text);
4156                 view->loading_text = NULL;
4157         }
4158
4159         view->scale = scale;
4160         view->pending_resize = TRUE;
4161
4162         gtk_widget_queue_resize (GTK_WIDGET (view));
4163
4164         g_object_notify (G_OBJECT (view), "zoom");
4165 }
4166
4167 double
4168 ev_view_get_zoom (EvView *view)
4169 {
4170         return view->scale;
4171 }
4172
4173 void
4174 ev_view_set_screen_dpi (EvView  *view,
4175                         gdouble  dpi)
4176 {
4177         g_return_if_fail (EV_IS_VIEW (view));
4178         g_return_if_fail (dpi > 0);
4179
4180         view->dpi = dpi;
4181         view->min_scale = MIN_SCALE * dpi / 72.0;
4182         view->max_scale = MAX_SCALE * dpi / 72.0;
4183 }
4184
4185 gboolean
4186 ev_view_get_continuous (EvView *view)
4187 {
4188         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
4189
4190         return view->continuous;
4191 }
4192
4193 void
4194 ev_view_set_continuous (EvView   *view,
4195                         gboolean  continuous)
4196 {
4197         g_return_if_fail (EV_IS_VIEW (view));
4198
4199         continuous = continuous != FALSE;
4200
4201         if (view->continuous != continuous) {
4202                 view->continuous = continuous;
4203                 view->pending_scroll = SCROLL_TO_PAGE_POSITION;
4204                 gtk_widget_queue_resize (GTK_WIDGET (view));
4205         }
4206
4207         g_object_notify (G_OBJECT (view), "continuous");
4208 }
4209
4210 gboolean
4211 ev_view_get_dual_page (EvView *view)
4212 {
4213         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
4214
4215         return view->dual_page;
4216 }
4217
4218 void
4219 ev_view_set_dual_page (EvView   *view,
4220                        gboolean  dual_page)
4221 {
4222         g_return_if_fail (EV_IS_VIEW (view));
4223
4224         dual_page = dual_page != FALSE;
4225
4226         if (view->dual_page == dual_page)
4227                 return;
4228
4229         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
4230         view->dual_page = dual_page;
4231         /* FIXME: if we're keeping the pixbuf cache around, we should extend the
4232          * preload_cache_size to be 2 if dual_page is set.
4233          */
4234         gtk_widget_queue_resize (GTK_WIDGET (view));
4235
4236         g_object_notify (G_OBJECT (view), "dual-page");
4237 }
4238
4239 void
4240 ev_view_set_fullscreen (EvView   *view,
4241                          gboolean  fullscreen)
4242 {
4243         g_return_if_fail (EV_IS_VIEW (view));
4244
4245         fullscreen = fullscreen != FALSE;
4246
4247         if (view->fullscreen == fullscreen)
4248                 return;
4249
4250         view->fullscreen = fullscreen;
4251         gtk_widget_queue_resize (GTK_WIDGET (view));
4252
4253         g_object_notify (G_OBJECT (view), "fullscreen");
4254 }
4255
4256 gboolean
4257 ev_view_get_fullscreen (EvView *view)
4258 {
4259         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
4260
4261         return view->fullscreen;
4262 }
4263
4264 void
4265 ev_view_set_presentation (EvView   *view,
4266                           gboolean  presentation)
4267 {
4268         g_return_if_fail (EV_IS_VIEW (view));
4269
4270         presentation = presentation != FALSE;
4271
4272         if (view->presentation == presentation)
4273                 return;
4274
4275         if (!presentation)
4276                 view->presentation_state = EV_PRESENTATION_NORMAL;
4277
4278         view->presentation = presentation;
4279         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
4280
4281         if (presentation) {
4282                 view->sizing_mode_saved = view->sizing_mode;
4283                 view->scale_saved = view->scale;
4284                 ev_view_set_sizing_mode (view, EV_SIZING_BEST_FIT);
4285         } else {
4286                 ev_view_set_sizing_mode (view, view->sizing_mode_saved);
4287                 ev_view_set_zoom (view, view->scale_saved, FALSE);
4288         }
4289
4290         gtk_widget_queue_resize (GTK_WIDGET (view));
4291
4292         if (presentation)
4293                 ev_view_presentation_transition_start (view);
4294         else
4295                 ev_view_presentation_transition_stop (view);
4296
4297         if (GTK_WIDGET_REALIZED (view)) {
4298                 if (view->presentation)
4299                         gdk_window_set_background (view->layout.bin_window,
4300                                                    &GTK_WIDGET (view)->style->black);
4301                 else
4302                         gdk_window_set_background (view->layout.bin_window,
4303                                                    &GTK_WIDGET (view)->style->mid [GTK_STATE_NORMAL]);
4304         }
4305
4306         g_object_notify (G_OBJECT (view), "presentation");
4307 }
4308
4309 gboolean
4310 ev_view_get_presentation (EvView *view)
4311 {
4312         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
4313
4314         return view->presentation;
4315 }
4316
4317 static gboolean
4318 transition_next_page (EvView *view)
4319 {
4320         ev_view_next_page (view);
4321
4322         return FALSE;
4323 }
4324
4325 static void
4326 ev_view_presentation_transition_stop (EvView *view)
4327 {
4328         if (view->trans_timeout_id > 0)
4329                 g_source_remove (view->trans_timeout_id);
4330         view->trans_timeout_id = 0;
4331 }
4332
4333 static void
4334 ev_view_presentation_transition_start (EvView *view)
4335 {
4336         gdouble duration;
4337
4338         if (!EV_IS_DOCUMENT_TRANSITION (view->document))
4339                 return;
4340
4341         ev_view_presentation_transition_stop (view);
4342
4343         duration = ev_document_transition_get_page_duration (EV_DOCUMENT_TRANSITION (view->document),
4344                                                              view->current_page);
4345         if (duration > 0)
4346                 view->trans_timeout_id = g_timeout_add (duration * 1000,
4347                                                         (GSourceFunc) transition_next_page,
4348                                                         view);
4349 }
4350
4351 void
4352 ev_view_set_sizing_mode (EvView       *view,
4353                          EvSizingMode  sizing_mode)
4354 {
4355         g_return_if_fail (EV_IS_VIEW (view));
4356
4357         if (view->sizing_mode == sizing_mode)
4358                 return;
4359
4360         view->sizing_mode = sizing_mode;
4361         gtk_widget_queue_resize (GTK_WIDGET (view));
4362
4363         g_object_notify (G_OBJECT (view), "sizing-mode");
4364 }
4365
4366 EvSizingMode
4367 ev_view_get_sizing_mode (EvView *view)
4368 {
4369         g_return_val_if_fail (EV_IS_VIEW (view), EV_SIZING_FREE);
4370
4371         return view->sizing_mode;
4372 }
4373
4374 gboolean
4375 ev_view_can_zoom_in (EvView *view)
4376 {
4377         return view->scale * ZOOM_IN_FACTOR <= view->max_scale;
4378 }
4379
4380 gboolean
4381 ev_view_can_zoom_out (EvView *view)
4382 {
4383         return view->scale * ZOOM_OUT_FACTOR >= view->min_scale;
4384 }
4385
4386 void
4387 ev_view_zoom_in (EvView *view)
4388 {
4389         g_return_if_fail (view->sizing_mode == EV_SIZING_FREE);
4390
4391         if (view->presentation)
4392                 return;
4393
4394         view->pending_scroll = SCROLL_TO_CENTER;
4395         ev_view_set_zoom (view, ZOOM_IN_FACTOR, TRUE);
4396 }
4397
4398 void
4399 ev_view_zoom_out (EvView *view)
4400 {
4401         g_return_if_fail (view->sizing_mode == EV_SIZING_FREE);
4402
4403         if (view->presentation)
4404                 return;
4405
4406         view->pending_scroll = SCROLL_TO_CENTER;
4407         ev_view_set_zoom (view, ZOOM_OUT_FACTOR, TRUE);
4408 }
4409
4410 void
4411 ev_view_rotate_right (EvView *view)
4412 {
4413         int rotation = view->rotation + 90;
4414
4415         if (rotation >= 360) {
4416                 rotation -= 360;
4417         }
4418
4419         ev_view_set_rotation (view, rotation);
4420 }
4421
4422 void
4423 ev_view_rotate_left (EvView *view)
4424 {
4425         int rotation = view->rotation - 90;
4426
4427         if (rotation < 0) {
4428                 rotation += 360;
4429         }
4430
4431         ev_view_set_rotation (view, rotation);
4432 }
4433
4434 void
4435 ev_view_set_rotation (EvView *view, int rotation)
4436 {
4437         view->rotation = rotation;
4438
4439         if (view->pixbuf_cache) {
4440                 ev_pixbuf_cache_clear (view->pixbuf_cache);
4441                 gtk_widget_queue_resize (GTK_WIDGET (view));
4442         }
4443
4444         if (rotation != 0)
4445                 clear_selection (view);
4446
4447         g_object_notify (G_OBJECT (view), "rotation");
4448 }
4449
4450 int
4451 ev_view_get_rotation (EvView *view)
4452 {
4453         return view->rotation;
4454 }
4455
4456 static double
4457 zoom_for_size_fit_width (int doc_width,
4458                          int doc_height,
4459                          int target_width,
4460                          int target_height,
4461                          int vsb_width)
4462 {
4463         double scale;
4464
4465         scale = (double)target_width / doc_width;
4466
4467         if (doc_height * scale > target_height)
4468                 scale = (double) (target_width - vsb_width) / doc_width;
4469
4470         return scale;
4471 }
4472
4473 static double
4474 zoom_for_size_fit_height (int doc_width,
4475                           int doc_height,
4476                           int target_width,
4477                           int target_height,
4478                           int vsb_height)
4479 {
4480         double scale;
4481
4482         scale = (double)target_height / doc_height;
4483
4484         if (doc_width * scale > target_width)
4485                 scale = (double) (target_height - vsb_height) / doc_height;
4486
4487         return scale;
4488 }
4489
4490 static double
4491 zoom_for_size_best_fit (int doc_width,
4492                         int doc_height,
4493                         int target_width,
4494                         int target_height,
4495                         int vsb_width,
4496                         int hsb_width)
4497 {
4498         double w_scale;
4499         double h_scale;
4500
4501         w_scale = (double)target_width / doc_width;
4502         h_scale = (double)target_height / doc_height;
4503
4504         if (doc_height * w_scale > target_height)
4505                 w_scale = (double) (target_width - vsb_width) / doc_width;
4506         if (doc_width * h_scale > target_width)
4507                 h_scale = (double) (target_height - hsb_width) / doc_height;
4508
4509         return MIN (w_scale, h_scale);
4510 }
4511
4512
4513 static void
4514 ev_view_zoom_for_size_presentation (EvView *view,
4515                                     int     width,
4516                                     int     height)
4517 {
4518         int doc_width, doc_height;
4519         gdouble scale;
4520
4521         ev_page_cache_get_size (view->page_cache,
4522                                 view->current_page,
4523                                 view->rotation,
4524                                 1.0,
4525                                 &doc_width,
4526                                 &doc_height);
4527         scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, 0, 0);
4528         ev_view_set_zoom (view, scale, FALSE);
4529 }
4530
4531 static void
4532 ev_view_zoom_for_size_continuous_and_dual_page (EvView *view,
4533                            int     width,
4534                            int     height,
4535                            int     vsb_width,
4536                            int     hsb_height)
4537 {
4538         int doc_width, doc_height;
4539         GtkBorder border;
4540         gdouble scale;
4541
4542         ev_page_cache_get_max_width (view->page_cache,
4543                                      view->rotation,
4544                                      1.0,
4545                                      &doc_width);
4546         ev_page_cache_get_max_height (view->page_cache,
4547                                       view->rotation,
4548                                       1.0,
4549                                       &doc_height);
4550         compute_border (view, doc_width, doc_height, &border);
4551
4552         doc_width = doc_width * 2;
4553         width -= (2 * (border.left + border.right) + 3 * view->spacing);
4554         height -= (border.top + border.bottom + 2 * view->spacing - 1);
4555
4556         /* FIXME: We really need to calculate the overall height here, not the
4557          * page height.  We assume there's always a vertical scrollbar for
4558          * now.  We need to fix this. */
4559         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
4560                 scale = zoom_for_size_fit_width (doc_width, doc_height, width - vsb_width, height, 0);
4561         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
4562                 scale = zoom_for_size_best_fit (doc_width, doc_height, width - vsb_width, height, 0, hsb_height);
4563         else
4564                 g_assert_not_reached ();
4565
4566         ev_view_set_zoom (view, scale, FALSE);
4567 }
4568
4569 static void
4570 ev_view_zoom_for_size_continuous (EvView *view,
4571                                   int     width,
4572                                   int     height,
4573                                   int     vsb_width,
4574                                   int     hsb_height)
4575 {
4576         int doc_width, doc_height;
4577         GtkBorder border;
4578         gdouble scale;
4579
4580         ev_page_cache_get_max_width (view->page_cache,
4581                                      view->rotation,
4582                                      1.0,
4583                                      &doc_width);
4584         ev_page_cache_get_max_height (view->page_cache,
4585                                       view->rotation,
4586                                       1.0,
4587                                       &doc_height);
4588         compute_border (view, doc_width, doc_height, &border);
4589
4590         width -= (border.left + border.right + 2 * view->spacing);
4591         height -= (border.top + border.bottom + 2 * view->spacing - 1);
4592
4593         /* FIXME: We really need to calculate the overall height here, not the
4594          * page height.  We assume there's always a vertical scrollbar for
4595          * now.  We need to fix this. */
4596         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
4597                 scale = zoom_for_size_fit_width (doc_width, doc_height, width - vsb_width, height, 0);
4598         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
4599                 scale = zoom_for_size_best_fit (doc_width, doc_height, width - vsb_width, height, 0, hsb_height);
4600         else
4601                 g_assert_not_reached ();
4602
4603         ev_view_set_zoom (view, scale, FALSE);
4604 }
4605
4606 static void
4607 ev_view_zoom_for_size_dual_page (EvView *view,
4608                                  int     width,
4609                                  int     height,
4610                                  int     vsb_width,
4611                                  int     hsb_height)
4612 {
4613         GtkBorder border;
4614         gint doc_width, doc_height;
4615         gdouble scale;
4616         gint other_page;
4617
4618         other_page = view->current_page ^ 1;
4619
4620         /* Find the largest of the two. */
4621         ev_page_cache_get_size (view->page_cache,
4622                                 view->current_page,
4623                                 view->rotation,
4624                                 1.0,
4625                                 &doc_width, &doc_height);
4626
4627         if (other_page < ev_page_cache_get_n_pages (view->page_cache)) {
4628                 gint width_2, height_2;
4629                 ev_page_cache_get_size (view->page_cache,
4630                                         other_page,
4631                                         view->rotation,
4632                                         1.0,
4633                                         &width_2, &height_2);
4634                 if (width_2 > doc_width)
4635                         doc_width = width_2;
4636                 if (height_2 > doc_height)
4637                         doc_height = height_2;
4638         }
4639         compute_border (view, doc_width, doc_height, &border);
4640
4641         doc_width = doc_width * 2;
4642         width -= ((border.left + border.right)* 2 + 3 * view->spacing);
4643         height -= (border.top + border.bottom + 2 * view->spacing);
4644
4645         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
4646                 scale = zoom_for_size_fit_width (doc_width, doc_height, width, height, vsb_width);
4647         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
4648                 scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, vsb_width, hsb_height);
4649         else
4650                 g_assert_not_reached ();
4651
4652         ev_view_set_zoom (view, scale, FALSE);
4653 }
4654
4655 static void
4656 ev_view_zoom_for_size_single_page (EvView *view,
4657                                    int     width,
4658                                    int     height,
4659                                    int     vsb_width,
4660                                    int     hsb_height)
4661 {
4662         int doc_width, doc_height;
4663         GtkBorder border;
4664         gdouble scale;
4665
4666         ev_page_cache_get_size (view->page_cache,
4667                                 view->current_page,
4668                                 view->rotation,
4669                                 1.0,
4670                                 &doc_width,
4671                                 &doc_height);
4672         /* Get an approximate border */
4673         compute_border (view, width, height, &border);
4674
4675         width -= (border.left + border.right + 2 * view->spacing);
4676         height -= (border.top + border.bottom + 2 * view->spacing);
4677
4678         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
4679                 scale = zoom_for_size_fit_width (doc_width, doc_height, width, height, vsb_width);
4680         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
4681                 scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, vsb_width, hsb_height);
4682         else
4683                 g_assert_not_reached ();
4684
4685         ev_view_set_zoom (view, scale, FALSE);
4686 }
4687
4688 static void
4689 ev_view_set_zoom_for_size (EvView *view,
4690                            int     width,
4691                            int     height,
4692                            int     vsb_width,
4693                            int     hsb_height)
4694 {
4695         g_return_if_fail (EV_IS_VIEW (view));
4696         g_return_if_fail (view->sizing_mode == EV_SIZING_FIT_WIDTH ||
4697                           view->sizing_mode == EV_SIZING_BEST_FIT);
4698         g_return_if_fail (width >= 0);
4699         g_return_if_fail (height >= 0);
4700
4701         if (view->document == NULL)
4702                 return;
4703
4704         if (view->presentation)
4705                 ev_view_zoom_for_size_presentation (view, width, height);
4706         else if (view->continuous && view->dual_page)
4707                 ev_view_zoom_for_size_continuous_and_dual_page (view, width, height, vsb_width, hsb_height);
4708         else if (view->continuous)
4709                 ev_view_zoom_for_size_continuous (view, width, height, vsb_width, hsb_height);
4710         else if (view->dual_page)
4711                 ev_view_zoom_for_size_dual_page (view, width, height, vsb_width, hsb_height);
4712         else
4713                 ev_view_zoom_for_size_single_page (view, width, height, vsb_width, hsb_height);
4714 }
4715
4716 /*** Find ***/
4717 static void
4718 update_find_status_message (EvView *view, gboolean this_page)
4719 {
4720         char *message;
4721
4722         if (this_page) {
4723                 int results;
4724
4725                 results = ev_document_find_get_n_results
4726                                 (EV_DOCUMENT_FIND (view->document),
4727                                  view->current_page);
4728                 /* TRANS: Sometimes this could be better translated as
4729                    "%d hit(s) on this page".  Therefore this string
4730                    contains plural cases. */
4731                 message = g_strdup_printf (ngettext ("%d found on this page",
4732                                                      "%d found on this page",
4733                                                      results),
4734                                            results);
4735         } else {
4736                 double percent;
4737
4738                 percent = ev_document_find_get_progress
4739                                 (EV_DOCUMENT_FIND (view->document));
4740                 message = g_strdup_printf (_("%3d%% remaining to search"),
4741                                            (int) ((1.0 - percent) * 100));
4742
4743         }
4744         ev_view_set_find_status (view, message);
4745         g_free (message);
4746 }
4747
4748 const char *
4749 ev_view_get_find_status (EvView *view)
4750 {
4751         g_return_val_if_fail (EV_IS_VIEW (view), NULL);
4752
4753         return view->find_status;
4754 }
4755
4756 static void
4757 ev_view_set_find_status (EvView *view, const char *message)
4758 {
4759         g_return_if_fail (EV_IS_VIEW (view));
4760
4761         g_free (view->find_status);
4762         view->find_status = g_strdup (message);
4763         g_object_notify (G_OBJECT (view), "find-status");
4764 }
4765
4766 static void
4767 jump_to_find_result (EvView *view)
4768 {
4769         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
4770         EvRectangle rect;
4771         GdkRectangle view_rect;
4772         int n_results;
4773         int page = view->current_page;
4774
4775         n_results = ev_document_find_get_n_results (find, page);
4776
4777         if (n_results > 0  && view->find_result < n_results) {
4778                 ev_document_find_get_result
4779                         (find, page, view->find_result, &rect);
4780
4781                 doc_rect_to_view_rect (view, page, &rect, &view_rect);
4782                 ensure_rectangle_is_visible (view, &view_rect);
4783         }
4784 }
4785
4786 /**
4787  * jump_to_find_page
4788  * @view: #EvView instance
4789  * @direction: Direction to look
4790  * @shift: Shift from current page
4791  *
4792  * Jumps to the first page that has occurences of searched word.
4793  * Uses a direction where to look and a shift from current page.
4794  *
4795  */
4796 static void
4797 jump_to_find_page (EvView *view, EvViewFindDirection direction, gint shift)
4798 {
4799         int n_pages, i;
4800
4801         n_pages = ev_page_cache_get_n_pages (view->page_cache);
4802
4803         for (i = 0; i < n_pages; i++) {
4804                 int has_results;
4805                 int page;
4806
4807                 if (direction == EV_VIEW_FIND_NEXT)
4808                         page = view->current_page + i;
4809                 else
4810                         page = view->current_page - i;
4811                 page += shift;
4812
4813                 if (page >= n_pages) {
4814                         page = page - n_pages;
4815                 }
4816                 if (page < 0)
4817                         page = page + n_pages;
4818
4819                 has_results = ev_document_find_page_has_results
4820                                 (EV_DOCUMENT_FIND (view->document), page);
4821                 if (has_results == -1) {
4822                         break;
4823                 } else if (has_results == 1) {
4824                         ev_page_cache_set_current_page (view->page_cache, page);
4825                         break;
4826                 }
4827         }
4828 }
4829
4830 gboolean
4831 ev_view_can_find_next (EvView *view)
4832 {
4833         if (EV_IS_DOCUMENT_FIND (view->document)) {
4834                 EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
4835                 int i, n_pages;
4836
4837                 n_pages = ev_page_cache_get_n_pages (view->page_cache);
4838                 for (i = 0; i < n_pages; i++) {
4839                         if (ev_document_find_get_n_results (find, i) > 0) {
4840                                 return TRUE;
4841                         }
4842                 }
4843         }
4844
4845         return FALSE;
4846 }
4847
4848 void
4849 ev_view_find_next (EvView *view)
4850 {
4851         int n_results, n_pages;
4852         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
4853
4854         n_results = ev_document_find_get_n_results (find, view->current_page);
4855
4856         n_pages = ev_page_cache_get_n_pages (view->page_cache);
4857
4858         view->find_result++;
4859
4860         if (view->find_result >= n_results) {
4861
4862                 view->find_result = 0;
4863                 jump_to_find_page (view, EV_VIEW_FIND_NEXT, 1);
4864                 jump_to_find_result (view);
4865         } else {
4866                 jump_to_find_result (view);
4867                 gtk_widget_queue_draw (GTK_WIDGET (view));
4868         }
4869 }
4870
4871 gboolean
4872 ev_view_can_find_previous (EvView *view)
4873 {
4874         if (EV_IS_DOCUMENT_FIND (view->document)) {
4875                 EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
4876                 int i, n_pages;
4877
4878                 n_pages = ev_page_cache_get_n_pages (view->page_cache);
4879                 for (i = n_pages - 1; i >= 0; i--) {
4880                         if (ev_document_find_get_n_results (find, i) > 0) {
4881                                 return TRUE;
4882                         }
4883                 }
4884         }
4885
4886         return FALSE;
4887 }
4888 void
4889 ev_view_find_previous (EvView *view)
4890 {
4891         int n_results, n_pages;
4892         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
4893         EvPageCache *page_cache;
4894
4895         page_cache = ev_page_cache_get (view->document);
4896
4897         n_results = ev_document_find_get_n_results (find, view->current_page);
4898
4899         n_pages = ev_page_cache_get_n_pages (page_cache);
4900
4901         view->find_result--;
4902
4903         if (view->find_result < 0) {
4904
4905                 jump_to_find_page (view, EV_VIEW_FIND_PREV, -1);
4906                 view->find_result = ev_document_find_get_n_results (find, view->current_page) - 1;
4907                 jump_to_find_result (view);
4908         } else {
4909                 jump_to_find_result (view);
4910                 gtk_widget_queue_draw (GTK_WIDGET (view));
4911         }
4912 }
4913
4914 void ev_view_search_changed (EvView *view)
4915 {
4916         /* search string has changed, focus on new search result */
4917         view->jump_to_find_result = TRUE;
4918 }
4919
4920 /*** Selections ***/
4921
4922 /* compute_new_selection_rect/text calculates the area currently selected by
4923  * view_rect.  each handles a different mode;
4924  */
4925 static GList *
4926 compute_new_selection_rect (EvView       *view,
4927                             GdkPoint     *start,
4928                             GdkPoint     *stop)
4929 {
4930         GdkRectangle view_rect;
4931         int n_pages, i;
4932         GList *list = NULL;
4933
4934         g_assert (view->selection_mode == EV_VIEW_SELECTION_RECTANGLE);
4935
4936         view_rect.x = MIN (start->x, stop->x);
4937         view_rect.y = MIN (start->y, stop->y);
4938         view_rect.width = MAX (start->x, stop->x) - view_rect.x;
4939         view_rect.width = MAX (start->y, stop->y) - view_rect.y;
4940
4941         n_pages = ev_page_cache_get_n_pages (view->page_cache);
4942
4943         for (i = 0; i < n_pages; i++) {
4944                 GdkRectangle page_area;
4945                 GtkBorder border;
4946
4947                 if (get_page_extents (view, i, &page_area, &border)) {
4948                         GdkRectangle overlap;
4949
4950                         if (gdk_rectangle_intersect (&page_area, &view_rect, &overlap)) {
4951                                 EvViewSelection *selection;
4952
4953                                 selection = g_new0 (EvViewSelection, 1);
4954                                 selection->page = i;
4955                                 view_rect_to_doc_rect (view, &overlap, &page_area,
4956                                                        &(selection->rect));
4957
4958                                 list = g_list_append (list, selection);
4959                         }
4960                 }
4961         }
4962
4963         return list;
4964 }
4965
4966 static gboolean
4967 gdk_rectangle_point_in (GdkRectangle *rectangle,
4968                         GdkPoint     *point)
4969 {
4970         return rectangle->x <= point->x &&
4971                 rectangle->y <= point->y &&
4972                 point->x < rectangle->x + rectangle->width &&
4973                 point->y < rectangle->y + rectangle->height;
4974 }
4975
4976 static GList *
4977 compute_new_selection_text (EvView   *view,
4978                             GdkPoint *start,
4979                             GdkPoint *stop)
4980 {
4981         int n_pages, i, first, last;
4982         GList *list = NULL;
4983         EvViewSelection *selection;
4984         gint width, height;
4985         int start_page, end_page;
4986
4987         g_assert (view->selection_mode == EV_VIEW_SELECTION_TEXT);
4988
4989         n_pages = ev_page_cache_get_n_pages (view->page_cache);
4990
4991         /* First figure out the range of pages the selection
4992          * affects. */
4993         first = n_pages;
4994         last = 0;
4995         if (view->continuous) {
4996                 start_page = 0;
4997                 end_page = n_pages;
4998         } else if (view->dual_page) {
4999                 start_page = view->start_page;
5000                 end_page = view->end_page + 1;
5001         } else {
5002                 start_page = view->current_page;
5003                 end_page = view->current_page + 1;
5004         }
5005
5006         for (i = start_page; i < end_page; i++) {
5007                 GdkRectangle page_area;
5008                 GtkBorder border;
5009
5010                 get_page_extents (view, i, &page_area, &border);
5011                 if (gdk_rectangle_point_in (&page_area, start) ||
5012                     gdk_rectangle_point_in (&page_area, stop)) {
5013                         if (first == n_pages)
5014                                 first = i;
5015                         last = i;
5016                 }
5017
5018         }
5019
5020         /* Now create a list of EvViewSelection's for the affected
5021          * pages.  This could be an empty list, a list of just one
5022          * page or a number of pages.*/
5023         for (i = first; i < last + 1; i++) {
5024                 GdkRectangle page_area;
5025                 GtkBorder border;
5026                 GdkPoint *point;
5027
5028                 ev_page_cache_get_size (view->page_cache, i,
5029                                         view->rotation,
5030                                         1.0, &width, &height);
5031
5032                 selection = g_new0 (EvViewSelection, 1);
5033                 selection->page = i;
5034                 selection->rect.x1 = selection->rect.y1 = 0;
5035                 selection->rect.x2 = width;
5036                 selection->rect.y2 = height;
5037
5038                 get_page_extents (view, i, &page_area, &border);
5039
5040                 if (gdk_rectangle_point_in (&page_area, start))
5041                         point = start;
5042                 else
5043                         point = stop;
5044
5045                 if (i == first)
5046                         view_point_to_doc_point (view, point, &page_area,
5047                                                  &selection->rect.x1,
5048                                                  &selection->rect.y1);
5049
5050                 /* If the selection is contained within just one page,
5051                  * make sure we don't write 'start' into both points
5052                  * in selection->rect. */
5053                 if (first == last)
5054                         point = stop;
5055
5056                 if (i == last)
5057                         view_point_to_doc_point (view, point, &page_area,
5058                                                  &selection->rect.x2,
5059                                                  &selection->rect.y2);
5060
5061                 list = g_list_append (list, selection);
5062         }
5063
5064         return list;
5065 }
5066
5067 /* This function takes the newly calculated list, and figures out which regions
5068  * have changed.  It then queues a redraw approporiately.
5069  */
5070 static void
5071 merge_selection_region (EvView *view,
5072                         GList  *new_list)
5073 {
5074         GList *old_list;
5075         GList *new_list_ptr, *old_list_ptr;
5076
5077         /* Update the selection */
5078         old_list = ev_pixbuf_cache_get_selection_list (view->pixbuf_cache);
5079         g_list_foreach (view->selection_info.selections, (GFunc)selection_free, NULL);
5080         view->selection_info.selections = new_list;
5081         ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, new_list);
5082         g_object_notify (G_OBJECT (view), "has-selection");
5083
5084         new_list_ptr = new_list;
5085         old_list_ptr = old_list;
5086
5087         while (new_list_ptr || old_list_ptr) {
5088                 EvViewSelection *old_sel, *new_sel;
5089                 int cur_page;
5090                 GdkRegion *region = NULL;
5091
5092                 new_sel = (new_list_ptr) ? (new_list_ptr->data) : NULL;
5093                 old_sel = (old_list_ptr) ? (old_list_ptr->data) : NULL;
5094
5095                 /* Assume that the lists are in order, and we run through them
5096                  * comparing them, one page at a time.  We come out with the
5097                  * first page we see. */
5098                 if (new_sel && old_sel) {
5099                         if (new_sel->page < old_sel->page) {
5100                                 new_list_ptr = new_list_ptr->next;
5101                                 old_sel = NULL;
5102                         } else if (new_sel->page > old_sel->page) {
5103                                 old_list_ptr = old_list_ptr->next;
5104                                 new_sel = NULL;
5105                         } else {
5106                                 new_list_ptr = new_list_ptr->next;
5107                                 old_list_ptr = old_list_ptr->next;
5108                         }
5109                 } else if (new_sel) {
5110                         new_list_ptr = new_list_ptr->next;
5111                 } else if (old_sel) {
5112                         old_list_ptr = old_list_ptr->next;
5113                 }
5114
5115                 g_assert (new_sel || old_sel);
5116
5117                 /* is the page we're looking at on the screen?*/
5118                 cur_page = new_sel ? new_sel->page : old_sel->page;
5119                 if (cur_page < view->start_page || cur_page > view->end_page)
5120                         continue;
5121
5122                 /* seed the cache with a new page.  We are going to need the new
5123                  * region too. */
5124                 if (new_sel) {
5125                         GdkRegion *tmp_region = NULL;
5126
5127                         ev_pixbuf_cache_get_selection_surface (view->pixbuf_cache,
5128                                                                cur_page,
5129                                                                view->scale,
5130                                                                &tmp_region);
5131
5132                         if (tmp_region) {
5133                                 new_sel->covered_region = gdk_region_copy (tmp_region);
5134                         }
5135                 }
5136
5137                 /* Now we figure out what needs redrawing */
5138                 if (old_sel && new_sel) {
5139                         if (old_sel->covered_region && new_sel->covered_region) {
5140                                 /* We only want to redraw the areas that have
5141                                  * changed, so we xor the old and new regions
5142                                  * and redraw if it's different */
5143                                 region = gdk_region_copy (old_sel->covered_region);
5144                                 gdk_region_xor (region, new_sel->covered_region);
5145                                 if (gdk_region_empty (region)) {
5146                                         gdk_region_destroy (region);
5147                                         region = NULL;
5148                                 }
5149                         } else if (old_sel->covered_region) {
5150                                 region = gdk_region_copy (old_sel->covered_region);
5151                         } else if (new_sel->covered_region) {
5152                                 region = gdk_region_copy (new_sel->covered_region);
5153                         }
5154                 } else if (old_sel && !new_sel) {
5155                         if (old_sel->covered_region && !gdk_region_empty (old_sel->covered_region)) {
5156                                 region = gdk_region_copy (old_sel->covered_region);
5157                         }
5158                 } else if (!old_sel && new_sel) {
5159                         if (new_sel->covered_region && !gdk_region_empty (new_sel->covered_region)) {
5160                                 region = gdk_region_copy (new_sel->covered_region);
5161                         }
5162                 } else {
5163                         g_assert_not_reached ();
5164                 }
5165
5166                 /* Redraw the damaged region! */
5167                 if (region) {
5168                         GdkRectangle page_area;
5169                         GtkBorder border;
5170
5171                         /* I don't know why but the region is smaller
5172                          * than expected. This hack fixes it, I guess
5173                          * 10 pixels more won't hurt
5174                          */
5175                         gdk_region_shrink (region, -5, -5);
5176
5177                         get_page_extents (view, cur_page, &page_area, &border);
5178                         gdk_region_offset (region,
5179                                            page_area.x + border.left - view->scroll_x,
5180                                            page_area.y + border.top - view->scroll_y);
5181                         gdk_window_invalidate_region (view->layout.bin_window, region, TRUE);
5182                         gdk_region_destroy (region);
5183                 }
5184         }
5185
5186         /* Free the old list, now that we're done with it. */
5187         g_list_foreach (old_list, (GFunc) selection_free, NULL);
5188 }
5189
5190 static void
5191 compute_selections (EvView   *view,
5192                     GdkPoint *start,
5193                     GdkPoint *stop)
5194 {
5195         GList *list;
5196
5197         if (view->selection_mode == EV_VIEW_SELECTION_RECTANGLE)
5198                 list = compute_new_selection_rect (view, start, stop);
5199         else
5200                 list = compute_new_selection_text (view, start, stop);
5201         merge_selection_region (view, list);
5202 }
5203
5204 /* Free's the selection.  It's up to the caller to queue redraws if needed.
5205  */
5206 static void
5207 selection_free (EvViewSelection *selection)
5208 {
5209         if (selection->covered_region)
5210                 gdk_region_destroy (selection->covered_region);
5211         g_free (selection);
5212 }
5213
5214 static void
5215 clear_selection (EvView *view)
5216 {
5217         g_list_foreach (view->selection_info.selections, (GFunc)selection_free, NULL);
5218         view->selection_info.selections = NULL;
5219         view->selection_info.in_selection = FALSE;
5220         if (view->pixbuf_cache)
5221                 ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, NULL);
5222         g_object_notify (G_OBJECT (view), "has-selection");
5223 }
5224
5225
5226 void
5227 ev_view_select_all (EvView *view)
5228 {
5229         int n_pages, i;
5230
5231         /* Disable selection on rotated pages for the 0.4.0 series */
5232         if (view->rotation != 0)
5233                 return;
5234
5235         clear_selection (view);
5236
5237         n_pages = ev_page_cache_get_n_pages (view->page_cache);
5238         for (i = 0; i < n_pages; i++) {
5239                 int width, height;
5240                 EvViewSelection *selection;
5241
5242                 ev_page_cache_get_size (view->page_cache,
5243                                         i,
5244                                         view->rotation,
5245                                         1.0, &width, &height);
5246
5247                 selection = g_new0 (EvViewSelection, 1);
5248                 selection->page = i;
5249                 selection->rect.x1 = selection->rect.y1 = 0;
5250                 selection->rect.x2 = width;
5251                 selection->rect.y2 = height;
5252
5253                 view->selection_info.selections = g_list_append (view->selection_info.selections, selection);
5254         }
5255
5256         ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, view->selection_info.selections);
5257         g_object_notify (G_OBJECT (view), "has-selection");
5258         gtk_widget_queue_draw (GTK_WIDGET (view));
5259 }
5260
5261 gboolean
5262 ev_view_get_has_selection (EvView *view)
5263 {
5264         return view->selection_info.selections != NULL;
5265 }
5266
5267 static char *
5268 get_selected_text (EvView *ev_view)
5269 {
5270         GString *text;
5271         GList *l;
5272         gchar *normalized_text;
5273
5274         text = g_string_new (NULL);
5275
5276         ev_document_doc_mutex_lock ();
5277
5278         for (l = ev_view->selection_info.selections; l != NULL; l = l->next) {
5279                 EvViewSelection *selection = (EvViewSelection *)l->data;
5280                 char *tmp;
5281
5282                 tmp = ev_document_get_text (ev_view->document,
5283                                             selection->page,
5284                                             &selection->rect);
5285                 g_string_append (text, tmp);
5286                 g_free (tmp);
5287         }
5288
5289         ev_document_doc_mutex_unlock ();
5290
5291         normalized_text = g_utf8_normalize (text->str, text->len, G_NORMALIZE_NFKC);
5292         g_string_free (text, TRUE);
5293         return normalized_text;
5294 }
5295
5296 void
5297 ev_view_copy (EvView *ev_view)
5298 {
5299         GtkClipboard *clipboard;
5300         char *text;
5301
5302         if (!ev_document_can_get_text (ev_view->document)) {
5303                 return;
5304         }
5305
5306         text = get_selected_text (ev_view);
5307         clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view),
5308                                               GDK_SELECTION_CLIPBOARD);
5309         gtk_clipboard_set_text (clipboard, text, -1);
5310         g_free (text);
5311 }
5312
5313 static void
5314 ev_view_primary_get_cb (GtkClipboard     *clipboard,
5315                         GtkSelectionData *selection_data,
5316                         guint             info,
5317                         gpointer          data)
5318 {
5319         EvView *ev_view = EV_VIEW (data);
5320         char *text;
5321
5322         if (!ev_document_can_get_text (ev_view->document)) {
5323                 return;
5324         }
5325
5326         text = get_selected_text (ev_view);
5327         if (text) {
5328                 gtk_selection_data_set_text (selection_data, text, -1);
5329                 g_free (text);
5330         }
5331 }
5332
5333 static void
5334 ev_view_primary_clear_cb (GtkClipboard *clipboard,
5335                           gpointer      data)
5336 {
5337         EvView *view = EV_VIEW (data);
5338
5339         clear_selection (view);
5340 }
5341
5342 static void
5343 ev_view_update_primary_selection (EvView *ev_view)
5344 {
5345         GtkClipboard *clipboard;
5346
5347         clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view),
5348                                               GDK_SELECTION_PRIMARY);
5349
5350         if (ev_view->selection_info.selections) {
5351                 if (!gtk_clipboard_set_with_owner (clipboard,
5352                                                    clipboard_targets,
5353                                                    G_N_ELEMENTS (clipboard_targets),
5354                                                    ev_view_primary_get_cb,
5355                                                    ev_view_primary_clear_cb,
5356                                                    G_OBJECT (ev_view)))
5357                         ev_view_primary_clear_cb (clipboard, ev_view);
5358         } else {
5359                 if (gtk_clipboard_get_owner (clipboard) == G_OBJECT (ev_view))
5360                         gtk_clipboard_clear (clipboard);
5361         }
5362 }
5363
5364 /*** Cursor operations ***/
5365
5366 static GdkCursor *
5367 ev_view_create_invisible_cursor(void)
5368 {
5369        GdkBitmap *empty;
5370        GdkColor black = { 0, 0, 0, 0 };
5371        static char bits[] = { 0x00 };
5372
5373        empty = gdk_bitmap_create_from_data (NULL, bits, 1, 1);
5374
5375        return gdk_cursor_new_from_pixmap (empty, empty, &black, &black, 0, 0);
5376 }
5377
5378 static void
5379 ev_view_set_cursor (EvView *view, EvViewCursor new_cursor)
5380 {
5381         GdkCursor *cursor = NULL;
5382         GdkDisplay *display;
5383         GtkWidget *widget;
5384
5385         if (view->cursor == new_cursor) {
5386                 return;
5387         }
5388
5389         widget = gtk_widget_get_toplevel (GTK_WIDGET (view));
5390         display = gtk_widget_get_display (widget);
5391         view->cursor = new_cursor;
5392
5393         switch (new_cursor) {
5394                 case EV_VIEW_CURSOR_NORMAL:
5395                         gdk_window_set_cursor (view->layout.bin_window, NULL);
5396                         break;
5397                 case EV_VIEW_CURSOR_IBEAM:
5398                         cursor = gdk_cursor_new_for_display (display, GDK_XTERM);
5399                         break;
5400                 case EV_VIEW_CURSOR_LINK:
5401                         cursor = gdk_cursor_new_for_display (display, GDK_HAND2);
5402                         break;
5403                 case EV_VIEW_CURSOR_WAIT:
5404                         cursor = gdk_cursor_new_for_display (display, GDK_WATCH);
5405                         break;
5406                 case EV_VIEW_CURSOR_HIDDEN:
5407                         cursor = ev_view_create_invisible_cursor ();
5408                         break;
5409                 case EV_VIEW_CURSOR_DRAG:
5410                         cursor = gdk_cursor_new_for_display (display, GDK_FLEUR);
5411                         break;
5412         }
5413
5414         if (cursor) {
5415                 gdk_window_set_cursor (view->layout.bin_window, cursor);
5416                 gdk_cursor_unref (cursor);
5417                 gdk_flush();
5418         }
5419 }
5420
5421 void
5422 ev_view_hide_cursor (EvView *view)
5423 {
5424        ev_view_set_cursor (view, EV_VIEW_CURSOR_HIDDEN);
5425 }
5426
5427 void
5428 ev_view_show_cursor (EvView *view)
5429 {
5430        ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
5431 }
5432
5433 static void
5434 ev_view_reset_presentation_state (EvView *view)
5435 {
5436         if (!view->presentation ||
5437             view->presentation_state == EV_PRESENTATION_NORMAL)
5438                 return;
5439
5440         view->presentation_state = EV_PRESENTATION_NORMAL;
5441         gdk_window_set_background (view->layout.bin_window,
5442                                    &GTK_WIDGET (view)->style->black);
5443         gtk_widget_queue_draw (GTK_WIDGET (view));
5444 }
5445
5446 gboolean
5447 ev_view_next_page (EvView *view)
5448 {
5449         int page, n_pages;
5450
5451         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
5452
5453         if (!view->page_cache)
5454                 return FALSE;
5455
5456         if (view->presentation &&
5457             (view->presentation_state == EV_PRESENTATION_BLACK ||
5458              view->presentation_state == EV_PRESENTATION_WHITE)) {
5459                 ev_view_reset_presentation_state (view);
5460                 return FALSE;
5461         }
5462
5463         ev_view_presentation_transition_stop (view);
5464         ev_view_reset_presentation_state (view);
5465
5466         page = ev_page_cache_get_current_page (view->page_cache);
5467         n_pages = ev_page_cache_get_n_pages (view->page_cache);
5468
5469         if (view->dual_page && !view->presentation)
5470                 page = page + 2;
5471         else
5472                 page = page + 1;
5473
5474         if (page < n_pages) {
5475                 ev_page_cache_set_current_page (view->page_cache, page);
5476                 return TRUE;
5477         } else if (view->presentation && page == n_pages) {
5478                 view->presentation_state = EV_PRESENTATION_END;
5479                 gtk_widget_queue_draw (GTK_WIDGET (view));
5480                 return TRUE;
5481         } else if (view->dual_page && page == n_pages) {
5482                 ev_page_cache_set_current_page (view->page_cache, page - 1);
5483                 return TRUE;
5484         } else {
5485                 return FALSE;
5486         }
5487 }
5488
5489 gboolean
5490 ev_view_previous_page (EvView *view)
5491 {
5492         int page;
5493
5494         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
5495
5496         if (!view->page_cache)
5497                 return FALSE;
5498
5499         if (view->presentation &&
5500             view->presentation_state == EV_PRESENTATION_END) {
5501                 ev_view_reset_presentation_state (view);
5502                 return TRUE;
5503         }
5504
5505         if (view->presentation &&
5506             (view->presentation_state == EV_PRESENTATION_BLACK ||
5507              view->presentation_state == EV_PRESENTATION_WHITE)) {
5508                 ev_view_reset_presentation_state (view);
5509                 return FALSE;
5510         }
5511
5512         ev_view_reset_presentation_state (view);
5513
5514         page = ev_page_cache_get_current_page (view->page_cache);
5515
5516         if (view->dual_page && !view->presentation)
5517                 page = page - 2;
5518         else
5519                 page = page - 1;
5520
5521         if (page >= 0) {
5522                 ev_page_cache_set_current_page (view->page_cache, page);
5523                 return TRUE;
5524         } else if (ev_view_get_dual_page (view) && page == -1) {
5525                 ev_page_cache_set_current_page (view->page_cache, 0);
5526                 return TRUE;
5527         } else {
5528                 return FALSE;
5529         }
5530 }
5531
5532 /*** Enum description for usage in signal ***/
5533
5534 GType
5535 ev_sizing_mode_get_type (void)
5536 {
5537   static GType etype = 0;
5538   if (etype == 0) {
5539     static const GEnumValue values[] = {
5540       { EV_SIZING_FIT_WIDTH, "EV_SIZING_FIT_WIDTH", "fit-width" },
5541       { EV_SIZING_BEST_FIT, "EV_SIZING_BEST_FIT", "best-fit" },
5542       { EV_SIZING_FREE, "EV_SIZING_FREE", "free" },
5543       { 0, NULL, NULL }
5544     };
5545     etype = g_enum_register_static ("EvSizingMode", values);
5546   }
5547   return etype;
5548 }
5549
5550 GType
5551 ev_scroll_type_get_type (void)
5552 {
5553   static GType etype = 0;
5554   if (etype == 0) {
5555     static const GEnumValue values[] = {
5556       { EV_SCROLL_PAGE_FORWARD, "EV_SCROLL_PAGE_FORWARD", "scroll-page-forward" },
5557       { EV_SCROLL_PAGE_BACKWARD, "EV_SCROLL_PAGE_BACKWARD", "scroll-page-backward" },
5558       { EV_SCROLL_STEP_FORWARD, "EV_SCROLL_STEP_FORWARD", "scroll-step-forward" },
5559       { EV_SCROLL_STEP_FORWARD, "EV_SCROLL_STEP_FORWARD", "scroll-step-forward" },
5560       { EV_SCROLL_STEP_UP, "EV_SCROLL_STEP_UP", "scroll-step-up" },
5561       { EV_SCROLL_STEP_DOWN, "EV_SCROLL_STEP_DOWN", "scroll-step-down" },
5562       { 0, NULL, NULL }
5563     };
5564     etype = g_enum_register_static ("EvScrollType", values);
5565   }
5566   return etype;
5567 }
5568
5569 void
5570 ev_view_update_view_size (EvView *view, GtkScrolledWindow * scrolled_window)
5571 {
5572         int width, height;
5573         GtkRequisition vsb_requisition;
5574         GtkRequisition hsb_requisition;
5575         int scrollbar_spacing;
5576
5577         /* Calculate the width available for the content */
5578         width  = GTK_WIDGET (scrolled_window)->allocation.width;
5579         height = GTK_WIDGET (scrolled_window)->allocation.height;
5580
5581         if (gtk_scrolled_window_get_shadow_type (scrolled_window) == GTK_SHADOW_IN
5582             && view) {
5583                 width -=  2 * GTK_WIDGET(view)->style->xthickness;
5584                 height -= 2 * GTK_WIDGET(view)->style->ythickness;
5585         }
5586
5587         gtk_widget_size_request (scrolled_window->vscrollbar, &vsb_requisition);
5588         gtk_widget_size_request (scrolled_window->hscrollbar, &hsb_requisition);
5589         gtk_widget_style_get (GTK_WIDGET (scrolled_window),
5590                               "scrollbar_spacing",
5591                               &scrollbar_spacing,
5592                               NULL);
5593
5594         if (EV_IS_VIEW(view)) {
5595                 ev_view_set_zoom_for_size (EV_VIEW (view),
5596                                            MAX (1, width),
5597                                            MAX (1, height),
5598                                            vsb_requisition.width + scrollbar_spacing,
5599                                            hsb_requisition.height + scrollbar_spacing);
5600         }
5601 }