shell/ev-view.c

   1 /* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8; c-indent-level: 8 -*- */
   2 /* this file is part of evince, a gnome document viewer
   3  *
   4  *  Copyright (C) 2004 Red Hat, Inc
   5  *
   6  * Evince is free software; you can redistribute it and/or modify it
   7  * under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * Evince is distributed in the hope that it will be useful, but
  12  * WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
  19  */
  20
  21 #include <stdlib.h>
  22 #include <math.h>
  23 #include <string.h>
  24 #include <gtk/gtkalignment.h>
  25 #include <glib/gi18n.h>
  26 #include <gtk/gtkbindings.h>
  27 #include <gtk/gtkselection.h>
  28 #include <gtk/gtkclipboard.h>
  29 #include <gdk/gdkkeysyms.h>
  30
  31 #include "ev-marshal.h"
  32 #include "ev-view.h"
  33 #include "ev-view-private.h"
  34 #include "ev-utils.h"
  35 #include "ev-selection.h"
  36 #include "ev-document-links.h"
  37 #include "ev-document-images.h"
  38 #include "ev-document-find.h"
  39 #include "ev-document-transition.h"
  40 #include "ev-document-forms.h"
  41 #include "ev-document-misc.h"
  42 #include "ev-job-queue.h"
  43 #include "ev-page-cache.h"
  44 #include "ev-pixbuf-cache.h"
  45 #include "ev-tooltip.h"
  46 #include "ev-application.h"
  47
  48 #define EV_VIEW_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass), EV_TYPE_VIEW, EvViewClass))
  49 #define EV_IS_VIEW_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), EV_TYPE_VIEW))
  50 #define EV_VIEW_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj), EV_TYPE_VIEW, EvViewClass))
  51
  52
  53 enum {
  54         PROP_0,
  55         PROP_STATUS,
  56         PROP_FIND_STATUS,
  57         PROP_CONTINUOUS,
  58         PROP_DUAL_PAGE,
  59         PROP_FULLSCREEN,
  60         PROP_PRESENTATION,
  61         PROP_SIZING_MODE,
  62         PROP_ZOOM,
  63         PROP_ROTATION,
  64         PROP_HAS_SELECTION,
  65 };
  66
  67 enum {
  68         SIGNAL_BINDING_ACTIVATED,
  69         SIGNAL_ZOOM_INVALID,
  70         SIGNAL_HANDLE_LINK,
  71         SIGNAL_EXTERNAL_LINK,
  72         SIGNAL_POPUP_MENU,
  73         N_SIGNALS,
  74 };
  75
  76 enum {
  77         TARGET_DND_URI,
  78         TARGET_DND_TEXT,
  79         TARGET_DND_IMAGE
  80 };
  81
  82 enum {
  83         TARGET_STRING,
  84         TARGET_TEXT,
  85         TARGET_COMPOUND_TEXT,
  86         TARGET_UTF8_STRING,
  87         TARGET_TEXT_BUFFER_CONTENTS
  88 };
  89
  90 static const GtkTargetEntry clipboard_targets[] = {
  91         { "STRING", 0, TARGET_STRING },
  92         { "TEXT",   0, TARGET_TEXT },
  93         { "COMPOUND_TEXT", 0, TARGET_COMPOUND_TEXT },
  94         { "UTF8_STRING", 0, TARGET_UTF8_STRING },
  95 };
  96
  97 static const GtkTargetEntry view_drop_targets[] = {
  98         { "text/uri-list", 0, 0 }
  99 };
 100
 101 static guint signals[N_SIGNALS];
 102
 103 typedef enum {
 104         EV_VIEW_FIND_NEXT,
 105         EV_VIEW_FIND_PREV
 106 } EvViewFindDirection;
 107
 108 #define ZOOM_IN_FACTOR  1.2
 109 #define ZOOM_OUT_FACTOR (1.0/ZOOM_IN_FACTOR)
 110
 111 #define MIN_SCALE 0.05409
 112 #define MAX_SCALE 4.0
 113
 114 #define SCROLL_TIME 150
 115
 116 /*** Scrolling ***/
 117 static void       scroll_to_current_page                     (EvView *view,
 118                                                               GtkOrientation orientation);
 119 static void       ev_view_set_scroll_adjustments             (GtkLayout          *layout,
 120                                                               GtkAdjustment      *hadjustment,
 121                                                               GtkAdjustment      *vadjustment);
 122 static void       view_update_range_and_current_page         (EvView             *view);
 123 static void       set_scroll_adjustment                      (EvView             *view,
 124                                                               GtkOrientation      orientation,
 125                                                               GtkAdjustment      *adjustment);
 126 static void       add_scroll_binding_keypad                  (GtkBindingSet      *binding_set,
 127                                                               guint               keyval,
 128                                                               GdkModifierType modifiers,
 129                                                               EvScrollType       scroll,
 130                                                               gboolean            horizontal);
 131 static void       ensure_rectangle_is_visible                (EvView             *view,
 132                                                               GdkRectangle       *rect);
 133
 134 /*** Geometry computations ***/
 135 static void       compute_border                             (EvView             *view,
 136                                                               int                 width,
 137                                                               int                 height,
 138                                                               GtkBorder          *border);
 139 static void       get_page_y_offset                          (EvView *view,
 140                                                               int page,
 141                                                               double zoom,
 142                                                               int *y_offset);
 143 static gboolean   get_page_extents                           (EvView             *view,
 144                                                               gint                page,
 145                                                               GdkRectangle       *page_area,
 146                                                               GtkBorder          *border);
 147 static void       view_rect_to_doc_rect                      (EvView             *view,
 148                                                               GdkRectangle       *view_rect,
 149                                                               GdkRectangle       *page_area,
 150                                                               EvRectangle        *doc_rect);
 151 static void       doc_rect_to_view_rect                      (EvView             *view,
 152                                                               int                 page,
 153                                                               EvRectangle        *doc_rect,
 154                                                               GdkRectangle       *view_rect);
 155 static void       find_page_at_location                      (EvView             *view,
 156                                                               gdouble             x,
 157                                                               gdouble             y,
 158                                                               gint               *page,
 159                                                               gint               *x_offset,
 160                                                               gint               *y_offset);
 161 static gboolean  doc_point_to_view_point                     (EvView             *view,
 162                                                               int                 page,
 163                                                               EvPoint            *doc_point,
 164                                                               GdkPoint           *view_point);
 165 /*** Hyperrefs ***/
 166 static EvLink *   ev_view_get_link_at_location               (EvView             *view,
 167                                                               gdouble             x,
 168                                                               gdouble             y);
 169 static char*      tip_from_link                              (EvView             *view,
 170                                                               EvLink             *link);
 171 /*** Forms ***/
 172 static EvFormField *ev_view_get_form_field_at_location       (EvView             *view,
 173                                                                gdouble            x,
 174                                                                gdouble            y);
 175
 176 /*** GtkWidget implementation ***/
 177 static void       ev_view_size_request_continuous_dual_page  (EvView             *view,
 178                                                               GtkRequisition     *requisition);
 179 static void       ev_view_size_request_continuous            (EvView             *view,
 180                                                               GtkRequisition     *requisition);
 181 static void       ev_view_size_request_dual_page             (EvView             *view,
 182                                                               GtkRequisition     *requisition);
 183 static void       ev_view_size_request_single_page           (EvView             *view,
 184                                                               GtkRequisition     *requisition);
 185 static void       ev_view_size_request                       (GtkWidget          *widget,
 186                                                               GtkRequisition     *requisition);
 187 static void       ev_view_size_allocate                      (GtkWidget          *widget,
 188                                                               GtkAllocation      *allocation);
 189 static void       ev_view_realize                            (GtkWidget          *widget);
 190 static gboolean   ev_view_scroll_event                       (GtkWidget          *widget,
 191                                                               GdkEventScroll     *event);
 192 static gboolean   ev_view_expose_event                       (GtkWidget          *widget,
 193                                                               GdkEventExpose     *event);
 194 static gboolean   ev_view_popup_menu                         (GtkWidget          *widget);
 195 static gboolean   ev_view_button_press_event                 (GtkWidget          *widget,
 196                                                               GdkEventButton     *event);
 197 static gboolean   ev_view_motion_notify_event                (GtkWidget          *widget,
 198                                                               GdkEventMotion     *event);
 199 static gboolean   ev_view_button_release_event               (GtkWidget          *widget,
 200                                                               GdkEventButton     *event);
 201 static gboolean   ev_view_enter_notify_event                 (GtkWidget          *widget,
 202                                                               GdkEventCrossing   *event);
 203 static gboolean   ev_view_leave_notify_event                 (GtkWidget          *widget,
 204                                                               GdkEventCrossing   *event);
 205 static void       ev_view_style_set                          (GtkWidget          *widget,
 206                                                               GtkStyle           *old_style);
 207 static void       ev_view_remove_all                         (EvView             *view);
 208
 209 static AtkObject *ev_view_get_accessible                     (GtkWidget *widget);
 210
 211 /*** Drawing ***/
 212 static guint32    ev_gdk_color_to_rgb                        (const GdkColor     *color);
 213 static void       draw_rubberband                            (GtkWidget          *widget,
 214                                                               GdkWindow          *window,
 215                                                               const GdkRectangle *rect,
 216                                                               guchar              alpha);
 217 static void       highlight_find_results                     (EvView             *view,
 218                                                               int                 page);
 219 static void       draw_one_page                              (EvView             *view,
 220                                                               gint                page,
 221                                                               GdkRectangle       *page_area,
 222                                                               GtkBorder          *border,
 223                                                               GdkRectangle       *expose_area,
 224                                                               gboolean           *page_ready);
 225 static void       draw_loading_text                          (EvView             *view,
 226                                                               GdkRectangle       *page_area,
 227                                                               GdkRectangle       *expose_area);
 228
 229 /*** Callbacks ***/
 230 static void       find_changed_cb                            (EvDocument         *document,
 231                                                               int                 page,
 232                                                               EvView             *view);
 233 static void       job_finished_cb                            (EvPixbufCache      *pixbuf_cache,
 234                                                               GdkRegion          *region,
 235                                                               EvView             *view);
 236 static void       page_changed_cb                            (EvPageCache        *page_cache,
 237                                                               int                 new_page,
 238                                                               EvView             *view);
 239 static void       on_adjustment_value_changed                (GtkAdjustment      *adjustment,
 240                                                               EvView             *view);
 241
 242 /*** GObject ***/
 243 static void       ev_view_finalize                           (GObject            *object);
 244 static void       ev_view_destroy                            (GtkObject          *object);
 245 static void       ev_view_set_property                       (GObject            *object,
 246                                                               guint               prop_id,
 247                                                               const GValue       *value,
 248                                                               GParamSpec         *pspec);
 249 static void       ev_view_get_property                       (GObject            *object,
 250                                                               guint               prop_id,
 251                                                               GValue             *value,
 252                                                               GParamSpec         *pspec);
 253 static void       ev_view_class_init                         (EvViewClass        *class);
 254 static void       ev_view_init                               (EvView             *view);
 255
 256 /*** Zoom and sizing ***/
 257 static double   zoom_for_size_fit_width                      (int doc_width,
 258                                                               int doc_height,
 259                                                               int target_width,
 260                                                               int target_height,
 261                                                               int vsb_width);
 262 static double   zoom_for_size_fit_height                     (int doc_width,
 263                                                               int doc_height,
 264                                                               int target_width,
 265                                                               int target_height,
 266                                                               int vsb_height);
 267 static double   zoom_for_size_best_fit                       (int doc_width,
 268                                                               int doc_height,
 269                                                               int target_width,
 270                                                               int target_height,
 271                                                               int vsb_width,
 272                                                               int hsb_width);
 273 static void     ev_view_zoom_for_size_presentation           (EvView *view,
 274                                                               int     width,
 275                                                               int     height);
 276 static void     ev_view_zoom_for_size_continuous_and_dual_page (EvView *view,
 277                                                                 int     width,
 278                                                                 int     height,
 279                                                                 int     vsb_width,
 280                                                                 int     hsb_height);
 281 static void     ev_view_zoom_for_size_continuous               (EvView *view,
 282                                                                 int     width,
 283                                                                 int     height,
 284                                                                 int     vsb_width,
 285                                                                 int     hsb_height);
 286 static void     ev_view_zoom_for_size_dual_page                (EvView *view,
 287                                                                 int     width,
 288                                                                 int     height,
 289                                                                 int     vsb_width,
 290                                                                 int     hsb_height);
 291 static void     ev_view_zoom_for_size_single_page              (EvView *view,
 292                                                                 int     width,
 293                                                                 int     height,
 294                                                                 int     vsb_width,
 295                                                                 int     hsb_height);
 296 /*** Cursors ***/
 297 static GdkCursor* ev_view_create_invisible_cursor            (void);
 298 static void       ev_view_set_cursor                         (EvView             *view,
 299                                                               EvViewCursor        new_cursor);
 300 static void       ev_view_handle_cursor_over_xy              (EvView *view,
 301                                                               gint x,
 302                                                               gint y);
 303
 304 /*** Status messages ***/
 305 static void       ev_view_set_status                         (EvView             *view,
 306                                                               const char         *message);
 307 static void       update_find_status_message                 (EvView             *view,
 308                                                               gboolean            this_page);
 309 static void       ev_view_set_find_status                    (EvView             *view,
 310                                                               const char         *message);
 311 /*** Find ***/
 312 static void       jump_to_find_result                        (EvView             *view);
 313 static void       jump_to_find_page                          (EvView             *view,
 314                                                               EvViewFindDirection direction,
 315                                                               gint                shift);
 316
 317 /*** Selection ***/
 318 static void       compute_selections                         (EvView             *view,
 319                                                               GdkPoint           *start,
 320                                                               GdkPoint           *stop);
 321 static void       clear_selection                            (EvView             *view);
 322 static void       selection_free                             (EvViewSelection    *selection);
 323 static char*      get_selected_text                          (EvView             *ev_view);
 324 static void       ev_view_primary_get_cb                     (GtkClipboard       *clipboard,
 325                                                               GtkSelectionData   *selection_data,
 326                                                               guint               info,
 327                                                               gpointer            data);
 328 static void       ev_view_primary_clear_cb                   (GtkClipboard       *clipboard,
 329                                                               gpointer            data);
 330 static void       ev_view_update_primary_selection           (EvView             *ev_view);
 331
 332 /*** Presentation ***/
 333 static void       ev_view_presentation_transition_start      (EvView             *ev_view);
 334 static void       ev_view_presentation_transition_stop       (EvView             *ev_view);
 335
 336
 337 G_DEFINE_TYPE (EvView, ev_view, GTK_TYPE_LAYOUT)
 338
 339 static void
 340 scroll_to_current_page (EvView *view, GtkOrientation orientation)
 341 {
 342         GdkPoint view_point;
 343
 344         if (view->document == NULL) {
 345                 return;
 346         }
 347
 348         doc_point_to_view_point (view, view->current_page, &view->pending_point, &view_point);
 349
 350         if (orientation == GTK_ORIENTATION_VERTICAL) {
 351                 view->pending_point.y = 0;
 352         } else {
 353                 view->pending_point.x = 0;
 354         }
 355
 356         if (orientation == GTK_ORIENTATION_VERTICAL) {
 357                 if (view->continuous) {
 358                         gtk_adjustment_clamp_page (view->vadjustment,
 359                                                    view_point.y - view->spacing / 2,
 360                                                    view_point.y + view->vadjustment->page_size);
 361                 } else {
 362                         gtk_adjustment_set_value (view->vadjustment,
 363                                                   CLAMP (view_point.y,
 364                                                   view->vadjustment->lower,
 365                                                   view->vadjustment->upper -
 366                                                   view->vadjustment->page_size));
 367                 }
 368         } else {
 369                 if (view->dual_page) {
 370                         gtk_adjustment_clamp_page (view->hadjustment,
 371                                                    view_point.x,
 372                                                    view_point.x + view->hadjustment->page_size);
 373                 } else {
 374                         gtk_adjustment_set_value (view->hadjustment,
 375                                                   CLAMP (view_point.x,
 376                                                   view->hadjustment->lower,
 377                                                   view->hadjustment->upper -
 378                                                   view->hadjustment->page_size));
 379                 }
 380         }
 381 }
 382
 383 static void
 384 view_set_adjustment_values (EvView         *view,
 385                             GtkOrientation  orientation)
 386 {
 387         GtkWidget *widget = GTK_WIDGET (view);
 388         GtkAdjustment *adjustment;
 389         int requisition;
 390         int allocation;
 391
 392         double factor;
 393         gint new_value;
 394
 395         if (orientation == GTK_ORIENTATION_HORIZONTAL)  {
 396                 requisition = widget->requisition.width;
 397                 allocation = widget->allocation.width;
 398                 adjustment = view->hadjustment;
 399         } else {
 400                 requisition = widget->requisition.height;
 401                 allocation = widget->allocation.height;
 402                 adjustment = view->vadjustment;
 403         }
 404
 405         if (!adjustment)
 406                 return;
 407
 408         factor = 1.0;
 409         switch (view->pending_scroll) {
 410                 case SCROLL_TO_KEEP_POSITION:
 411                 case SCROLL_TO_FIND_LOCATION:
 412                         factor = (adjustment->value) / adjustment->upper;
 413                         break;
 414                 case SCROLL_TO_PAGE_POSITION:
 415                         break;
 416                 case SCROLL_TO_CENTER:
 417                         factor = (adjustment->value + adjustment->page_size * 0.5) / adjustment->upper;
 418                         break;
 419         }
 420
 421         adjustment->page_size = allocation;
 422         adjustment->step_increment = allocation * 0.1;
 423         adjustment->page_increment = allocation * 0.9;
 424         adjustment->lower = 0;
 425         adjustment->upper = MAX (allocation, requisition);
 426
 427         /*
 428          * We add 0.5 to the values before to average out our rounding errors.
 429          */
 430         switch (view->pending_scroll) {
 431                 case SCROLL_TO_KEEP_POSITION:
 432                 case SCROLL_TO_FIND_LOCATION:
 433                         new_value = CLAMP (adjustment->upper * factor + 0.5, 0, adjustment->upper - adjustment->page_size);
 434                         gtk_adjustment_set_value (adjustment, (int)new_value);
 435                         break;
 436                 case SCROLL_TO_PAGE_POSITION:
 437                         scroll_to_current_page (view, orientation);
 438                         break;
 439                 case SCROLL_TO_CENTER:
 440                         new_value = CLAMP (adjustment->upper * factor - adjustment->page_size * 0.5 + 0.5,
 441                                            0, adjustment->upper - adjustment->page_size);
 442                         gtk_adjustment_set_value (adjustment, (int)new_value);
 443                         break;
 444         }
 445
 446         gtk_adjustment_changed (adjustment);
 447 }
 448
 449 static void
 450 view_update_range_and_current_page (EvView *view)
 451 {
 452         gint current_page;
 453         gint best_current_page = -1;
 454
 455         /* Presentation trumps all other modes */
 456         if (view->presentation) {
 457                 view->start_page = view->current_page;
 458                 view->end_page = view->current_page;
 459         } else if (view->continuous) {
 460                 GdkRectangle current_area, unused, page_area;
 461                 GtkBorder border;
 462                 gboolean found = FALSE;
 463                 gint area_max = -1, area;
 464                 int i;
 465
 466                 if (!(view->vadjustment && view->hadjustment))
 467                         return;
 468
 469                 current_area.x = view->hadjustment->value;
 470                 current_area.width = view->hadjustment->upper;
 471                 current_area.y = view->vadjustment->value;
 472                 current_area.height = view->vadjustment->page_size;
 473
 474                 for (i = 0; i < ev_page_cache_get_n_pages (view->page_cache); i++) {
 475
 476                         get_page_extents (view, i, &page_area, &border);
 477
 478                         if (gdk_rectangle_intersect (&current_area, &page_area, &unused)) {
 479                                 area = unused.width * unused.height;
 480
 481                                 if (!found) {
 482                                         area_max = area;
 483                                         view->start_page = i;
 484                                         found = TRUE;
 485                                         best_current_page = i;
 486                                 }
 487                                 if (area > area_max) {
 488                                         best_current_page = (area == area_max) ? MIN (i, best_current_page) : i;
 489                                         area_max = area;
 490                                 }
 491
 492                                 view->end_page = i;
 493                         } else if (found) {
 494                                 break;
 495                         }
 496                 }
 497
 498         } else if (view->dual_page) {
 499                 if (view->current_page % 2 == ev_page_cache_get_dual_even_left (view->page_cache)) {
 500                         view->start_page = view->current_page;
 501                         if (view->current_page + 1 < ev_page_cache_get_n_pages (view->page_cache))
 502                                 view->end_page = view->start_page + 1;
 503                         else
 504                                 view->end_page = view->start_page;
 505                 } else {
 506                         if (view->current_page < 1)
 507                                 view->start_page = view->current_page;
 508                         else
 509                                 view->start_page = view->current_page - 1;
 510                         view->end_page = view->current_page;
 511                 }
 512         } else {
 513                 view->start_page = view->current_page;
 514                 view->end_page = view->current_page;
 515         }
 516
 517         best_current_page = MAX (best_current_page, view->start_page);
 518         current_page = ev_page_cache_get_current_page (view->page_cache);
 519
 520         if ((current_page != best_current_page) && (view->pending_scroll == SCROLL_TO_KEEP_POSITION)) {
 521                 view->current_page = best_current_page;
 522                 ev_page_cache_set_current_page (view->page_cache, best_current_page);
 523         }
 524
 525         ev_pixbuf_cache_set_page_range (view->pixbuf_cache,
 526                                         view->start_page,
 527                                         view->end_page,
 528                                         view->rotation,
 529                                         view->scale,
 530                                         view->selection_info.selections);
 531 }
 532
 533 static void
 534 set_scroll_adjustment (EvView *view,
 535                        GtkOrientation  orientation,
 536                        GtkAdjustment  *adjustment)
 537 {
 538         GtkAdjustment **to_set;
 539
 540         if (orientation == GTK_ORIENTATION_HORIZONTAL)
 541                 to_set = &view->hadjustment;
 542         else
 543                 to_set = &view->vadjustment;
 544
 545         if (*to_set != adjustment) {
 546                 if (*to_set) {
 547                         g_signal_handlers_disconnect_by_func (*to_set,
 548                                                               (gpointer) on_adjustment_value_changed,
 549                                                               view);
 550                         g_object_unref (*to_set);
 551                 }
 552
 553                 *to_set = adjustment;
 554                 view_set_adjustment_values (view, orientation);
 555
 556                 if (*to_set) {
 557                         g_object_ref (*to_set);
 558                         g_signal_connect (*to_set, "value_changed",
 559                                           G_CALLBACK (on_adjustment_value_changed), view);
 560                 }
 561         }
 562 }
 563
 564 static void
 565 ev_view_set_scroll_adjustments (GtkLayout      *layout,
 566                                 GtkAdjustment  *hadjustment,
 567                                 GtkAdjustment  *vadjustment)
 568 {
 569         EvView *view = EV_VIEW (layout);
 570
 571         set_scroll_adjustment (view, GTK_ORIENTATION_HORIZONTAL, hadjustment);
 572         set_scroll_adjustment (view, GTK_ORIENTATION_VERTICAL, vadjustment);
 573
 574         on_adjustment_value_changed (NULL, view);
 575 }
 576
 577 static void
 578 add_scroll_binding_keypad (GtkBindingSet  *binding_set,
 579                            guint           keyval,
 580                            GdkModifierType modifiers,
 581                            EvScrollType    scroll,
 582                            gboolean        horizontal)
 583 {
 584   guint keypad_keyval = keyval - GDK_Left + GDK_KP_Left;
 585
 586   gtk_binding_entry_add_signal (binding_set, keyval, modifiers,
 587                                 "binding_activated", 2,
 588                                 EV_TYPE_SCROLL_TYPE, scroll,
 589                                 G_TYPE_BOOLEAN, horizontal);
 590   gtk_binding_entry_add_signal (binding_set, keypad_keyval, modifiers,
 591                                 "binding_activated", 2,
 592                                 EV_TYPE_SCROLL_TYPE, scroll,
 593                                 G_TYPE_BOOLEAN, horizontal);
 594 }
 595
 596 void
 597 ev_view_scroll (EvView        *view,
 598                 EvScrollType   scroll,
 599                 gboolean horizontal)
 600 {
 601         GtkAdjustment *adjustment;
 602         double value, increment;
 603         gboolean first_page = FALSE;
 604         gboolean last_page = FALSE;
 605
 606         view->jump_to_find_result = FALSE;
 607
 608         if (view->presentation || view->sizing_mode == EV_SIZING_BEST_FIT) {
 609                 switch (scroll) {
 610                         case EV_SCROLL_PAGE_BACKWARD:
 611                         case EV_SCROLL_STEP_BACKWARD:
 612                                 ev_view_previous_page (view);
 613                                 break;
 614                         case EV_SCROLL_PAGE_FORWARD:
 615                         case EV_SCROLL_STEP_FORWARD:
 616                                 ev_view_next_page (view);
 617                                 break;
 618                         default:
 619                                 break;
 620                 }
 621                 return;
 622         }
 623
 624         /* Assign values for increment and vertical adjustment */
 625         adjustment = horizontal ? view->hadjustment : view->vadjustment;
 626         increment = adjustment->page_size * 0.75;
 627         value = adjustment->value;
 628
 629         /* Assign boolean for first and last page */
 630         if (view->current_page == 0)
 631                 first_page = TRUE;
 632         if (view->current_page == ev_page_cache_get_n_pages (view->page_cache) - 1)
 633                 last_page = TRUE;
 634
 635         switch (scroll) {
 636                 case EV_SCROLL_PAGE_BACKWARD:
 637                         /* Do not jump backwards if at the first page */
 638                         if (value == (adjustment->lower) && first_page) {
 639                                 /* Do nothing */
 640                                 /* At the top of a page, assign the upper bound limit of previous page */
 641                         } else if (value == (adjustment->lower)) {
 642                                 value = adjustment->upper - adjustment->page_size;
 643                                 ev_view_previous_page (view);
 644                                 /* Jump to the top */
 645                         } else {
 646                                 value = MAX (value - increment, adjustment->lower);
 647                         }
 648                         break;
 649                 case EV_SCROLL_PAGE_FORWARD:
 650                         /* Do not jump forward if at the last page */
 651                         if (value == (adjustment->upper - adjustment->page_size) && last_page) {
 652                                 /* Do nothing */
 653                         /* At the bottom of a page, assign the lower bound limit of next page */
 654                         } else if (value == (adjustment->upper - adjustment->page_size)) {
 655                                 value = 0;
 656                                 ev_view_next_page (view);
 657                         /* Jump to the bottom */
 658                         } else {
 659                                 value = MIN (value + increment, adjustment->upper - adjustment->page_size);
 660                         }
 661                         break;
 662                 case EV_SCROLL_STEP_BACKWARD:
 663                         value -= adjustment->step_increment;
 664                         break;
 665                 case EV_SCROLL_STEP_FORWARD:
 666                         value += adjustment->step_increment;
 667                         break;
 668                 case EV_SCROLL_STEP_DOWN:
 669                         value -= adjustment->step_increment / 10;
 670                         break;
 671                 case EV_SCROLL_STEP_UP:
 672                         value += adjustment->step_increment / 10;
 673                         break;
 674                 default:
 675                         break;
 676         }
 677
 678         value = CLAMP (value, adjustment->lower,
 679                        adjustment->upper - adjustment->page_size);
 680
 681         gtk_adjustment_set_value (adjustment, value);
 682 }
 683
 684 #define MARGIN 5
 685
 686 static void
 687 ensure_rectangle_is_visible (EvView *view, GdkRectangle *rect)
 688 {
 689         GtkWidget *widget = GTK_WIDGET (view);
 690         GtkAdjustment *adjustment;
 691         int value;
 692
 693         view->pending_scroll = SCROLL_TO_FIND_LOCATION;
 694
 695         adjustment = view->vadjustment;
 696
 697         if (rect->y < adjustment->value) {
 698                 value = MAX (adjustment->lower, rect->y - MARGIN);
 699                 gtk_adjustment_set_value (view->vadjustment, value);
 700         } else if (rect->y + rect->height >
 701                    adjustment->value + widget->allocation.height) {
 702                 value = MIN (adjustment->upper, rect->y + rect->height -
 703                              widget->allocation.height + MARGIN);
 704                 gtk_adjustment_set_value (view->vadjustment, value);
 705         }
 706
 707         adjustment = view->hadjustment;
 708
 709         if (rect->x < adjustment->value) {
 710                 value = MAX (adjustment->lower, rect->x - MARGIN);
 711                 gtk_adjustment_set_value (view->hadjustment, value);
 712         } else if (rect->x + rect->height >
 713                    adjustment->value + widget->allocation.width) {
 714                 value = MIN (adjustment->upper, rect->x + rect->width -
 715                              widget->allocation.width + MARGIN);
 716                 gtk_adjustment_set_value (view->hadjustment, value);
 717         }
 718
 719         gtk_widget_queue_resize (GTK_WIDGET (view));
 720 }
 721
 722 /*** Geometry computations ***/
 723
 724 static void
 725 compute_border (EvView *view, int width, int height, GtkBorder *border)
 726 {
 727         if (view->presentation) {
 728                 border->left = 0;
 729                 border->right = 0;
 730                 border->top = 0;
 731                 border->bottom = 0;
 732         } else {
 733                 ev_document_misc_get_page_border_size (width, height, border);
 734         }
 735 }
 736
 737 static void
 738 get_page_y_offset (EvView *view, int page, double zoom, int *y_offset)
 739 {
 740         int max_width, offset;
 741         GtkBorder border;
 742
 743         g_return_if_fail (y_offset != NULL);
 744
 745         ev_page_cache_get_max_width (view->page_cache, view->rotation, zoom, &max_width);
 746
 747         compute_border (view, max_width, max_width, &border);
 748
 749         if (view->dual_page) {
 750                 ev_page_cache_get_height_to_page (view->page_cache, page,
 751                                                   view->rotation, zoom, NULL, &offset);
 752                 offset += ((page + ev_page_cache_get_dual_even_left (view->page_cache)) / 2 + 1) * view->spacing + ((page + ev_page_cache_get_dual_even_left (view->page_cache)) / 2 ) * (border.top + border.bottom);
 753         } else {
 754                 ev_page_cache_get_height_to_page (view->page_cache, page,
 755                                                   view->rotation, zoom, &offset, NULL);
 756                 offset += (page + 1) * view->spacing + page * (border.top + border.bottom);
 757         }
 758
 759         *y_offset = offset;
 760         return;
 761 }
 762
 763 static gboolean
 764 get_page_extents (EvView       *view,
 765                   gint          page,
 766                   GdkRectangle *page_area,
 767                   GtkBorder    *border)
 768 {
 769         GtkWidget *widget;
 770         int width, height;
 771
 772         widget = GTK_WIDGET (view);
 773
 774         /* Get the size of the page */
 775         ev_page_cache_get_size (view->page_cache, page,
 776                                 view->rotation,
 777                                 view->scale,
 778                                 &width, &height);
 779         compute_border (view, width, height, border);
 780         page_area->width = width + border->left + border->right;
 781         page_area->height = height + border->top + border->bottom;
 782
 783         if (view->presentation) {
 784                 page_area->x = (MAX (0, widget->allocation.width - width))/2;
 785                 page_area->y = (MAX (0, widget->allocation.height - height))/2;
 786         } else if (view->continuous) {
 787                 gint max_width;
 788                 gint x, y;
 789
 790                 ev_page_cache_get_max_width (view->page_cache, view->rotation,
 791                                              view->scale, &max_width);
 792                 max_width = max_width + border->left + border->right;
 793                 /* Get the location of the bounding box */
 794                 if (view->dual_page) {
 795                         x = view->spacing + ((page % 2 == ev_page_cache_get_dual_even_left (view->page_cache)) ? 0 : 1) * (max_width + view->spacing);
 796                         x = x + MAX (0, widget->allocation.width - (max_width * 2 + view->spacing * 3)) / 2;
 797                         if (page % 2 == ev_page_cache_get_dual_even_left (view->page_cache))
 798                                 x = x + (max_width - width - border->left - border->right);
 799                 } else {
 800                         x = view->spacing;
 801                         x = x + MAX (0, widget->allocation.width - (width + view->spacing * 2)) / 2;
 802                 }
 803
 804                 get_page_y_offset (view, page, view->scale, &y);
 805
 806                 page_area->x = x;
 807                 page_area->y = y;
 808         } else {
 809                 gint x, y;
 810                 if (view->dual_page) {
 811                         gint width_2, height_2;
 812                         gint max_width = width;
 813                         gint max_height = height;
 814                         GtkBorder overall_border;
 815                         gint other_page;
 816
 817                         other_page = (page % 2 == ev_page_cache_get_dual_even_left (view->page_cache)) ? page + 1: page - 1;
 818
 819                         /* First, we get the bounding box of the two pages */
 820                         if (other_page < ev_page_cache_get_n_pages (view->page_cache)
 821                             && (0 <= other_page)) {
 822                                 ev_page_cache_get_size (view->page_cache,
 823                                                         other_page,
 824                                                         view->rotation,
 825                                                         view->scale,
 826                                                         &width_2, &height_2);
 827                                 if (width_2 > width)
 828                                         max_width = width_2;
 829                                 if (height_2 > height)
 830                                         max_height = height_2;
 831                         }
 832                         compute_border (view, max_width, max_height, &overall_border);
 833
 834                         /* Find the offsets */
 835                         x = view->spacing;
 836                         y = view->spacing;
 837
 838                         /* Adjust for being the left or right page */
 839                         if (page % 2 == ev_page_cache_get_dual_even_left (view->page_cache))
 840                                 x = x + max_width - width;
 841                         else
 842                                 x = x + (max_width + overall_border.left + overall_border.right) + view->spacing;
 843
 844                         y = y + (max_height - height)/2;
 845
 846                         /* Adjust for extra allocation */
 847                         x = x + MAX (0, widget->allocation.width -
 848                                      ((max_width + overall_border.left + overall_border.right) * 2 + view->spacing * 3))/2;
 849                         y = y + MAX (0, widget->allocation.height - (height + view->spacing * 2))/2;
 850                 } else {
 851                         x = view->spacing;
 852                         y = view->spacing;
 853
 854                         /* Adjust for extra allocation */
 855                         x = x + MAX (0, widget->allocation.width - (width + border->left + border->right + view->spacing * 2))/2;
 856                         y = y + MAX (0, widget->allocation.height - (height + border->top + border->bottom +  view->spacing * 2))/2;
 857                 }
 858
 859                 page_area->x = x;
 860                 page_area->y = y;
 861         }
 862
 863         return TRUE;
 864 }
 865
 866 static void
 867 view_point_to_doc_point (EvView *view,
 868                          GdkPoint *view_point,
 869                          GdkRectangle *page_area,
 870                          double  *doc_point_x,
 871                          double  *doc_point_y)
 872 {
 873         *doc_point_x = (double) (view_point->x - page_area->x) / view->scale;
 874         *doc_point_y = (double) (view_point->y - page_area->y) / view->scale;
 875 }
 876
 877 static void
 878 view_rect_to_doc_rect (EvView *view,
 879                        GdkRectangle *view_rect,
 880                        GdkRectangle *page_area,
 881                        EvRectangle  *doc_rect)
 882 {
 883         doc_rect->x1 = (double) (view_rect->x - page_area->x) / view->scale;
 884         doc_rect->y1 = (double) (view_rect->y - page_area->y) / view->scale;
 885         doc_rect->x2 = doc_rect->x1 + (double) view_rect->width / view->scale;
 886         doc_rect->y2 = doc_rect->y1 + (double) view_rect->height / view->scale;
 887 }
 888
 889 static gboolean
 890 doc_point_to_view_point (EvView       *view,
 891                          int           page,
 892                          EvPoint      *doc_point,
 893                          GdkPoint     *view_point)
 894 {
 895         GdkRectangle page_area;
 896         GtkBorder border;
 897         double x, y, view_x, view_y;
 898         int width, height;
 899
 900         ev_page_cache_get_size (view->page_cache, page,
 901                                 view->rotation,
 902                                 1.0,
 903                                 &width, &height);
 904
 905         if (view->rotation == 0) {
 906                 x = doc_point->x;
 907                 y = doc_point->y;
 908         } else if (view->rotation == 90) {
 909                 x = width - doc_point->y;
 910                 y = doc_point->x;
 911         } else if (view->rotation == 180) {
 912                 x = width - doc_point->x;
 913                 y = height - doc_point->y;
 914         } else if (view->rotation == 270) {
 915                 x = doc_point->y;
 916                 y = height - doc_point->x;
 917         } else {
 918                 g_assert_not_reached ();
 919         }
 920
 921         get_page_extents (view, page, &page_area, &border);
 922
 923         view_x = x * view->scale;
 924         view_y = y * view->scale;
 925         view_point->x = view_x + page_area.x;
 926         view_point->y = view_y + page_area.y;
 927
 928         return (view_x > 0 && view_x <= page_area.width &&
 929                 view_y > 0 && view_y <= page_area.height);
 930 }
 931
 932 static void
 933 doc_rect_to_view_rect (EvView       *view,
 934                        int           page,
 935                        EvRectangle  *doc_rect,
 936                        GdkRectangle *view_rect)
 937 {
 938         GdkRectangle page_area;
 939         GtkBorder border;
 940         double x, y, w, h;
 941         int width, height;
 942
 943         ev_page_cache_get_size (view->page_cache, page,
 944                                 view->rotation,
 945                                 1.0,
 946                                 &width, &height);
 947
 948         if (view->rotation == 0) {
 949                 x = doc_rect->x1;
 950                 y = doc_rect->y1;
 951                 w = doc_rect->x2 - doc_rect->x1;
 952                 h = doc_rect->y2 - doc_rect->y1;
 953         } else if (view->rotation == 90) {
 954                 x = width - doc_rect->y2;
 955                 y = doc_rect->x1;
 956                 w = doc_rect->y2 - doc_rect->y1;
 957                 h = doc_rect->x2 - doc_rect->x1;
 958         } else if (view->rotation == 180) {
 959                 x = width - doc_rect->x2;
 960                 y = height - doc_rect->y2;
 961                 w = doc_rect->x2 - doc_rect->x1;
 962                 h = doc_rect->y2 - doc_rect->y1;
 963         } else if (view->rotation == 270) {
 964                 x = doc_rect->y1;
 965                 y = height - doc_rect->x2;
 966                 w = doc_rect->y2 - doc_rect->y1;
 967                 h = doc_rect->x2 - doc_rect->x1;
 968         } else {
 969                 g_assert_not_reached ();
 970         }
 971
 972         get_page_extents (view, page, &page_area, &border);
 973
 974         view_rect->x = x * view->scale + page_area.x;
 975         view_rect->y = y * view->scale + page_area.y;
 976         view_rect->width = w * view->scale;
 977         view_rect->height = h * view->scale;
 978 }
 979
 980 static void
 981 find_page_at_location (EvView  *view,
 982                        gdouble  x,
 983                        gdouble  y,
 984                        gint    *page,
 985                        gint    *x_offset,
 986                        gint    *y_offset)
 987 {
 988         int i;
 989
 990         if (view->document == NULL)
 991                 return;
 992
 993         g_assert (page);
 994         g_assert (x_offset);
 995         g_assert (y_offset);
 996
 997         for (i = view->start_page; i <= view->end_page; i++) {
 998                 GdkRectangle page_area;
 999                 GtkBorder border;
1000
1001                 if (! get_page_extents (view, i, &page_area, &border))
1002                         continue;
1003
1004                 if ((x >= page_area.x + border.left) &&
1005                     (x < page_area.x + page_area.width - border.right) &&
1006                     (y >= page_area.y + border.top) &&
1007                     (y < page_area.y + page_area.height - border.bottom)) {
1008                         *page = i;
1009                         *x_offset = x - (page_area.x + border.left);
1010                         *y_offset = y - (page_area.y + border.top);
1011                         return;
1012                 }
1013         }
1014
1015         *page = -1;
1016 }
1017
1018 static gboolean
1019 location_in_text (EvView  *view,
1020                   gdouble  x,
1021                   gdouble  y)
1022 {
1023         GdkRegion *region;
1024         gint page = -1;
1025         gint x_offset = 0, y_offset = 0;
1026
1027         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1028
1029         if (page == -1)
1030                 return FALSE;
1031
1032         region = ev_pixbuf_cache_get_text_mapping (view->pixbuf_cache, page);
1033
1034         if (region)
1035                 return gdk_region_point_in (region, x_offset / view->scale, y_offset / view->scale);
1036         else
1037                 return FALSE;
1038 }
1039
1040 static int
1041 ev_view_get_width (EvView *view)
1042 {
1043         return GTK_WIDGET (view)->allocation.width;
1044 }
1045
1046 static int
1047 ev_view_get_height (EvView *view)
1048 {
1049         return GTK_WIDGET (view)->allocation.height;
1050 }
1051
1052 static gboolean
1053 location_in_selected_text (EvView  *view,
1054                            gdouble  x,
1055                            gdouble  y)
1056 {
1057         gint page = -1;
1058         gint x_offset = 0, y_offset = 0;
1059         EvViewSelection *selection;
1060         GList *l = NULL;
1061
1062         for (l = view->selection_info.selections; l != NULL; l = l->next) {
1063                 selection = (EvViewSelection *)l->data;
1064
1065                 find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1066
1067                 if (page != selection->page)
1068                         continue;
1069
1070                 if (selection->covered_region &&
1071                     gdk_region_point_in (selection->covered_region, x_offset, y_offset))
1072                         return TRUE;
1073         }
1074
1075         return FALSE;
1076 }
1077
1078 static gboolean
1079 get_doc_point_from_offset (EvView *view,
1080                            gint    page,
1081                            gint    x_offset,
1082                            gint    y_offset,
1083                            gint   *x_new,
1084                            gint   *y_new)
1085 {
1086         int width, height;
1087         double x, y;
1088
1089         ev_page_cache_get_size (view->page_cache, page,
1090                                 view->rotation,
1091                                 1.0,
1092                                 &width, &height);
1093
1094         x_offset = x_offset / view->scale;
1095         y_offset = y_offset / view->scale;
1096
1097         if (view->rotation == 0) {
1098                 x = x_offset;
1099                 y = y_offset;
1100         } else if (view->rotation == 90) {
1101                 x = y_offset;
1102                 y = width - x_offset;
1103         } else if (view->rotation == 180) {
1104                 x = width - x_offset;
1105                 y = height - y_offset;
1106         } else if (view->rotation == 270) {
1107                 x = height - y_offset;
1108                 y = x_offset;
1109         } else {
1110                 g_assert_not_reached ();
1111         }
1112
1113         *x_new = x;
1114         *y_new = y;
1115
1116         return TRUE;
1117 }
1118
1119 /*** Hyperref ***/
1120 static EvLink *
1121 ev_view_get_link_at_location (EvView  *view,
1122                               gdouble  x,
1123                               gdouble  y)
1124 {
1125         gint page = -1;
1126         gint x_offset = 0, y_offset = 0;
1127         gint x_new = 0, y_new = 0;
1128         GList *link_mapping;
1129
1130         if (!EV_IS_DOCUMENT_LINKS (view->document))
1131                 return NULL;
1132
1133         x += view->scroll_x;
1134         y += view->scroll_y;
1135
1136         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1137
1138         if (page == -1)
1139                 return NULL;
1140
1141
1142         if (get_doc_point_from_offset (view, page, x_offset,
1143                                        y_offset, &x_new, &y_new) == FALSE)
1144                 return NULL;
1145
1146         link_mapping = ev_pixbuf_cache_get_link_mapping (view->pixbuf_cache, page);
1147
1148         if (link_mapping)
1149                 return ev_link_mapping_find (link_mapping, x_new, y_new);
1150         else
1151                 return NULL;
1152 }
1153
1154 static void
1155 goto_fitr_dest (EvView *view, EvLinkDest *dest)
1156 {
1157         EvPoint doc_point;
1158         double zoom;
1159
1160         zoom = zoom_for_size_best_fit (ev_link_dest_get_right (dest) - ev_link_dest_get_left (dest),
1161                                        ev_link_dest_get_bottom (dest) - ev_link_dest_get_top (dest),
1162                                        ev_view_get_width (view),
1163                                        ev_view_get_height (view), 0, 0);
1164
1165         ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1166         ev_view_set_zoom (view, zoom, FALSE);
1167
1168         doc_point.x = ev_link_dest_get_left (dest);
1169         doc_point.y = ev_link_dest_get_top (dest);
1170
1171         view->current_page = ev_link_dest_get_page (dest);
1172         view->pending_point = doc_point;
1173         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1174
1175         gtk_widget_queue_resize (GTK_WIDGET (view));
1176 }
1177
1178 static void
1179 goto_fitv_dest (EvView *view, EvLinkDest *dest)
1180 {
1181         EvPoint doc_point;
1182         int doc_width, doc_height, page;
1183         double zoom;
1184
1185         page = ev_link_dest_get_page (dest);
1186         ev_page_cache_get_size (view->page_cache, page, 0, 1.0, &doc_width, &doc_height);
1187
1188         doc_point.x = ev_link_dest_get_left (dest);
1189         doc_point.y = 0;
1190
1191         zoom = zoom_for_size_fit_height (doc_width - doc_point.x , doc_height,
1192                                          ev_view_get_width (view),
1193                                          ev_view_get_height (view), 0);
1194
1195         ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1196         ev_view_set_zoom (view, zoom, FALSE);
1197
1198         view->current_page = page;
1199         view->pending_point = doc_point;
1200         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1201
1202         gtk_widget_queue_resize (GTK_WIDGET (view));
1203 }
1204
1205 static void
1206 goto_fith_dest (EvView *view, EvLinkDest *dest)
1207 {
1208         EvPoint doc_point;
1209         int doc_width, doc_height, page;
1210         double zoom;
1211
1212         page = ev_link_dest_get_page (dest);
1213         ev_page_cache_get_size (view->page_cache, page, 0, 1.0, &doc_width, &doc_height);
1214
1215         doc_point.x = 0;
1216         doc_point.y = ev_link_dest_get_top (dest);
1217
1218         zoom = zoom_for_size_fit_width (doc_width, ev_link_dest_get_top (dest),
1219                                         ev_view_get_width (view),
1220                                         ev_view_get_height (view), 0);
1221
1222         ev_view_set_sizing_mode (view, EV_SIZING_FIT_WIDTH);
1223         ev_view_set_zoom (view, zoom, FALSE);
1224
1225         view->current_page = page;
1226         view->pending_point = doc_point;
1227         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1228
1229         gtk_widget_queue_resize (GTK_WIDGET (view));
1230 }
1231
1232 static void
1233 goto_fit_dest (EvView *view, EvLinkDest *dest)
1234 {
1235         double zoom;
1236         int doc_width, doc_height;
1237         int page;
1238
1239         page = ev_link_dest_get_page (dest);
1240         ev_page_cache_get_size (view->page_cache, page, 0, 1.0, &doc_width, &doc_height);
1241
1242         zoom = zoom_for_size_best_fit (doc_width, doc_height, ev_view_get_width (view),
1243                                        ev_view_get_height (view), 0, 0);
1244
1245         ev_view_set_sizing_mode (view, EV_SIZING_BEST_FIT);
1246         ev_view_set_zoom (view, zoom, FALSE);
1247
1248         view->current_page = page;
1249         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1250
1251         gtk_widget_queue_resize (GTK_WIDGET (view));
1252 }
1253
1254 static void
1255 goto_xyz_dest (EvView *view, EvLinkDest *dest)
1256 {
1257         EvPoint doc_point;
1258         gint page;
1259         double zoom;
1260
1261         zoom = ev_link_dest_get_zoom (dest);
1262         page = ev_link_dest_get_page (dest);
1263
1264         if (zoom > 1) {
1265                 ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1266                 ev_view_set_zoom (view, zoom, FALSE);
1267         }
1268
1269         doc_point.x = ev_link_dest_get_left (dest);
1270         doc_point.y = ev_link_dest_get_top (dest);
1271
1272         view->current_page = page;
1273         view->pending_point = doc_point;
1274         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1275
1276         gtk_widget_queue_resize (GTK_WIDGET (view));
1277 }
1278
1279 static void
1280 goto_dest (EvView *view, EvLinkDest *dest)
1281 {
1282         EvLinkDestType type;
1283         int page, n_pages, current_page;
1284
1285         page = ev_link_dest_get_page (dest);
1286         n_pages = ev_page_cache_get_n_pages (view->page_cache);
1287
1288         if (page < 0 || page >= n_pages)
1289                 return;
1290
1291         current_page = view->current_page;
1292
1293         type = ev_link_dest_get_dest_type (dest);
1294
1295         switch (type) {
1296                 case EV_LINK_DEST_TYPE_PAGE:
1297                         ev_page_cache_set_current_page (view->page_cache, page);
1298                         break;
1299                 case EV_LINK_DEST_TYPE_FIT:
1300                         goto_fit_dest (view, dest);
1301                         break;
1302                 case EV_LINK_DEST_TYPE_FITH:
1303                         goto_fith_dest (view, dest);
1304                         break;
1305                 case EV_LINK_DEST_TYPE_FITV:
1306                         goto_fitv_dest (view, dest);
1307                         break;
1308                 case EV_LINK_DEST_TYPE_FITR:
1309                         goto_fitr_dest (view, dest);
1310                         break;
1311                 case EV_LINK_DEST_TYPE_XYZ:
1312                         goto_xyz_dest (view, dest);
1313                         break;
1314                 case EV_LINK_DEST_TYPE_PAGE_LABEL:
1315                         ev_page_cache_set_page_label (view->page_cache, ev_link_dest_get_page_label (dest));
1316                         break;
1317                 default:
1318                         g_assert_not_reached ();
1319         }
1320
1321         if (current_page != view->current_page)
1322                 ev_page_cache_set_current_page (view->page_cache,
1323                                                 view->current_page);
1324 }
1325
1326 static void
1327 ev_view_goto_dest (EvView *view, EvLinkDest *dest)
1328 {
1329         EvLinkDestType type;
1330
1331         type = ev_link_dest_get_dest_type (dest);
1332
1333         if (type == EV_LINK_DEST_TYPE_NAMED) {
1334                 EvLinkDest  *dest2;
1335                 const gchar *named_dest;
1336
1337                 named_dest = ev_link_dest_get_named_dest (dest);
1338                 dest2 = ev_document_links_find_link_dest (EV_DOCUMENT_LINKS (view->document),
1339                                                           named_dest);
1340                 if (dest2) {
1341                         goto_dest (view, dest2);
1342                         g_object_unref (dest2);
1343                 }
1344
1345                 return;
1346         }
1347
1348         goto_dest (view, dest);
1349 }
1350
1351 void
1352 ev_view_handle_link (EvView *view, EvLink *link)
1353 {
1354         EvLinkAction    *action = NULL;
1355         EvLinkActionType type;
1356
1357         action = ev_link_get_action (link);
1358         if (!action)
1359                 return;
1360
1361         type = ev_link_action_get_action_type (action);
1362
1363         switch (type) {
1364                 case EV_LINK_ACTION_TYPE_GOTO_DEST: {
1365                         EvLinkDest *dest;
1366
1367                         g_signal_emit (view, signals[SIGNAL_HANDLE_LINK], 0, link);
1368
1369                         dest = ev_link_action_get_dest (action);
1370                         ev_view_goto_dest (view, dest);
1371                 }
1372                         break;
1373                 case EV_LINK_ACTION_TYPE_GOTO_REMOTE:
1374                 case EV_LINK_ACTION_TYPE_EXTERNAL_URI:
1375                 case EV_LINK_ACTION_TYPE_LAUNCH:
1376                 case EV_LINK_ACTION_TYPE_NAMED:
1377                         g_signal_emit (view, signals[SIGNAL_EXTERNAL_LINK], 0, action);
1378                         break;
1379         }
1380 }
1381
1382 gchar *
1383 ev_view_page_label_from_dest (EvView *view, EvLinkDest *dest)
1384 {
1385         EvLinkDestType type;
1386         gchar *msg = NULL;
1387
1388         type = ev_link_dest_get_dest_type (dest);
1389
1390         switch (type) {
1391                 case EV_LINK_DEST_TYPE_NAMED: {
1392                         EvLinkDest  *dest2;
1393                         const gchar *named_dest;
1394
1395                         named_dest = ev_link_dest_get_named_dest (dest);
1396                         dest2 = ev_document_links_find_link_dest (EV_DOCUMENT_LINKS (view->document),
1397                                                                   named_dest);
1398                         if (dest2) {
1399                                 msg = ev_page_cache_get_page_label (view->page_cache,
1400                                                                     ev_link_dest_get_page (dest2));
1401                                 g_object_unref (dest2);
1402                         }
1403                 }
1404
1405                         break;
1406                 case EV_LINK_DEST_TYPE_PAGE_LABEL: {
1407                         msg = g_strdup (ev_link_dest_get_page_label (dest));
1408                 }
1409                         break;
1410                 default:
1411                         msg = ev_page_cache_get_page_label (view->page_cache,
1412                                                             ev_link_dest_get_page (dest));
1413         }
1414
1415         return msg;
1416 }
1417
1418 static char *
1419 tip_from_action_named (EvLinkAction *action)
1420 {
1421         const gchar *name = ev_link_action_get_name (action);
1422
1423         if (g_ascii_strcasecmp (name, "FirstPage") == 0) {
1424                 return g_strdup (_("Go to first page"));
1425         } else if (g_ascii_strcasecmp (name, "PrevPage") == 0) {
1426                 return g_strdup (_("Go to previous page"));
1427         } else if (g_ascii_strcasecmp (name, "NextPage") == 0) {
1428                 return g_strdup (_("Go to next page"));
1429         } else if (g_ascii_strcasecmp (name, "LastPage") == 0) {
1430                 return g_strdup (_("Go to last page"));
1431         } else if (g_ascii_strcasecmp (name, "GoToPage") == 0) {
1432                 return g_strdup (_("Go to page"));
1433         } else if (g_ascii_strcasecmp (name, "Find") == 0) {
1434                 return g_strdup (_("Find"));
1435         }
1436
1437         return NULL;
1438 }
1439
1440 static char *
1441 tip_from_link (EvView *view, EvLink *link)
1442 {
1443         EvLinkAction *action;
1444         EvLinkActionType type;
1445         char *msg = NULL;
1446         char *page_label;
1447         const char *title;
1448
1449         action = ev_link_get_action (link);
1450         title = ev_link_get_title (link);
1451
1452         if (!action)
1453                 return title ? g_strdup (title) : NULL;
1454
1455         type = ev_link_action_get_action_type (action);
1456
1457         switch (type) {
1458                 case EV_LINK_ACTION_TYPE_GOTO_DEST:
1459                         page_label = ev_view_page_label_from_dest (view,
1460                                                                    ev_link_action_get_dest (action));
1461                         msg = g_strdup_printf (_("Go to page %s"), page_label);
1462                         g_free (page_label);
1463                         break;
1464                 case EV_LINK_ACTION_TYPE_GOTO_REMOTE:
1465                         if (title) {
1466                                 msg = g_strdup_printf (_("Go to %s on file “%s”"), title,
1467                                                        ev_link_action_get_filename (action));
1468                         } else {
1469                                 msg = g_strdup_printf (_("Go to file “%s”"),
1470                                                        ev_link_action_get_filename (action));
1471                         }
1472
1473                         break;
1474                 case EV_LINK_ACTION_TYPE_EXTERNAL_URI:
1475                         msg = g_strdup (ev_link_action_get_uri (action));
1476                         break;
1477                 case EV_LINK_ACTION_TYPE_LAUNCH:
1478                         msg = g_strdup_printf (_("Launch %s"),
1479                                                ev_link_action_get_filename (action));
1480                         break;
1481                 case EV_LINK_ACTION_TYPE_NAMED:
1482                         msg = tip_from_action_named (action);
1483                         break;
1484                 default:
1485                         if (title)
1486                                 msg = g_strdup (title);
1487                         break;
1488         }
1489
1490         return msg;
1491 }
1492
1493 static void
1494 ev_view_handle_cursor_over_xy (EvView *view, gint x, gint y)
1495 {
1496         EvLink *link;
1497
1498         link = ev_view_get_link_at_location (view, x, y);
1499
1500         if (view->link_tooltip == NULL) {
1501                 view->link_tooltip = ev_tooltip_new (GTK_WIDGET (view));
1502         }
1503
1504         if (view->hovered_link != link) {
1505                 view->hovered_link = link;
1506                 ev_tooltip_deactivate (EV_TOOLTIP (view->link_tooltip));
1507         }
1508
1509         if (link) {
1510                 char *msg = tip_from_link (view, link);
1511
1512                 if (msg && g_utf8_validate (msg, -1, NULL)) {
1513                         EvTooltip *tooltip = EV_TOOLTIP (view->link_tooltip);
1514
1515                         ev_tooltip_set_position (tooltip, x, y);
1516                         ev_tooltip_set_text (tooltip, msg);
1517                         ev_tooltip_activate (tooltip);
1518                 }
1519                 g_free (msg);
1520
1521                 ev_view_set_cursor (view, EV_VIEW_CURSOR_LINK);
1522         } else if (location_in_text (view, x + view->scroll_x, y + view->scroll_y)) {
1523                 ev_view_set_cursor (view, EV_VIEW_CURSOR_IBEAM);
1524         } else if (ev_view_get_form_field_at_location (view, x, y)) {
1525                 ev_view_set_cursor (view, EV_VIEW_CURSOR_LINK);
1526         } else {
1527                 ev_view_set_status (view, NULL);
1528                 if (view->cursor == EV_VIEW_CURSOR_LINK ||
1529                     view->cursor == EV_VIEW_CURSOR_IBEAM)
1530                         ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
1531         }
1532 }
1533
1534 /*** Images ***/
1535 static EvImage *
1536 ev_view_get_image_at_location (EvView  *view,
1537                                gdouble  x,
1538                                gdouble  y)
1539 {
1540         gint page = -1;
1541         gint x_offset = 0, y_offset = 0;
1542         gint x_new = 0, y_new = 0;
1543         GList *image_mapping;
1544
1545         if (!EV_IS_DOCUMENT_IMAGES (view->document))
1546                 return NULL;
1547
1548         x += view->scroll_x;
1549         y += view->scroll_y;
1550
1551         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1552
1553         if (page == -1)
1554                 return NULL;
1555
1556         if (get_doc_point_from_offset (view, page, x_offset,
1557                                        y_offset, &x_new, &y_new) == FALSE)
1558                 return NULL;
1559
1560         image_mapping = ev_pixbuf_cache_get_image_mapping (view->pixbuf_cache, page);
1561
1562         if (image_mapping)
1563                 return ev_image_mapping_find (image_mapping, x_new, y_new);
1564         else
1565                 return NULL;
1566 }
1567
1568 /*** Forms ***/
1569 static EvFormField *
1570 ev_view_get_form_field_at_location (EvView  *view,
1571                                     gdouble  x,
1572                                     gdouble  y)
1573 {
1574         gint page = -1;
1575         gint x_offset = 0, y_offset = 0;
1576         gint x_new = 0, y_new = 0;
1577         GList *forms_mapping;
1578
1579         if (!EV_IS_DOCUMENT_FORMS (view->document))
1580                 return NULL;
1581
1582         x += view->scroll_x;
1583         y += view->scroll_y;
1584
1585         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1586
1587         if (page == -1)
1588                 return NULL;
1589
1590         if (get_doc_point_from_offset (view, page, x_offset,
1591                                        y_offset, &x_new, &y_new) == FALSE)
1592                 return NULL;
1593
1594         forms_mapping = ev_pixbuf_cache_get_form_field_mapping (view->pixbuf_cache, page);
1595
1596         if (forms_mapping)
1597                 return ev_form_field_mapping_find (forms_mapping, x_new, y_new);
1598         else
1599                 return NULL;
1600 }
1601
1602 static GdkRegion *
1603 ev_view_form_field_get_region (EvView      *view,
1604                                EvFormField *field)
1605 {
1606         EvRectangle  field_area;
1607         GdkRectangle view_area;
1608         GList       *forms_mapping;
1609
1610         forms_mapping = ev_pixbuf_cache_get_form_field_mapping (view->pixbuf_cache,
1611                                                                 field->page);
1612         ev_form_field_mapping_get_area (forms_mapping, field, &field_area);
1613         doc_rect_to_view_rect (view, field->page, &field_area, &view_area);
1614         view_area.x -= view->scroll_x;
1615         view_area.y -= view->scroll_y;
1616
1617         return gdk_region_rectangle (&view_area);
1618 }
1619
1620 static gboolean
1621 ev_view_forms_remove_widgets (EvView *view)
1622 {
1623         ev_view_remove_all (view);
1624
1625         return FALSE;
1626 }
1627
1628 static void
1629 ev_view_form_field_destroy (GtkWidget *widget,
1630                             EvView    *view)
1631 {
1632         g_idle_add ((GSourceFunc)ev_view_forms_remove_widgets, view);
1633 }
1634
1635 static GtkWidget *
1636 ev_view_form_field_button_create_widget (EvView      *view,
1637                                          EvFormField *field)
1638 {
1639         EvFormFieldButton *field_button = EV_FORM_FIELD_BUTTON (field);
1640         GdkRegion         *field_region = NULL;
1641
1642         switch (field_button->type) {
1643                 case EV_FORM_FIELD_BUTTON_PUSH:
1644                         return NULL;
1645                 case EV_FORM_FIELD_BUTTON_CHECK:
1646                 case EV_FORM_FIELD_BUTTON_RADIO: {
1647                         gboolean  state;
1648                         GList    *forms_mapping, *l;
1649
1650                         state = ev_document_forms_form_field_button_get_state (EV_DOCUMENT_FORMS (view->document),
1651                                                                                field);
1652
1653                         /* FIXME: it actually depends on NoToggleToOff flags */
1654                         if (field_button->type == EV_FORM_FIELD_BUTTON_RADIO &&
1655                             state && field_button->state)
1656                                 return NULL;
1657
1658                         field_region = ev_view_form_field_get_region (view, field);
1659
1660                         /* For radio buttons and checkbox buttons that are in a set
1661                          * we need to update also the region for the current selected item
1662                          */
1663                         forms_mapping = ev_pixbuf_cache_get_form_field_mapping (view->pixbuf_cache,
1664                                                                                 field->page);
1665                         for (l = forms_mapping; l; l = g_list_next (l)) {
1666                                 EvFormField *button = ((EvFormFieldMapping *)(l->data))->field;
1667                                 GdkRegion   *button_region;
1668
1669                                 if (button->id == field->id)
1670                                         continue;
1671
1672                                 /* FIXME: only buttons in the same group should be updated */
1673                                 if (!EV_IS_FORM_FIELD_BUTTON (button) ||
1674                                     EV_FORM_FIELD_BUTTON (button)->type != field_button->type ||
1675                                     EV_FORM_FIELD_BUTTON (button)->state != TRUE)
1676                                         continue;
1677
1678                                 button_region = ev_view_form_field_get_region (view, button);
1679                                 gdk_region_union (field_region, button_region);
1680                                 gdk_region_destroy (button_region);
1681                         }
1682
1683                         ev_document_forms_form_field_button_set_state (EV_DOCUMENT_FORMS (view->document),
1684                                                                        field, !state);
1685                         field_button->state = !state;
1686                 }
1687                         break;
1688         }
1689
1690         ev_pixbuf_cache_reload_page (view->pixbuf_cache,
1691                                      field_region,
1692                                      field->page,
1693                                      view->rotation,
1694                                      view->scale);
1695         gdk_region_destroy (field_region);
1696
1697         return NULL;
1698 }
1699
1700 static void
1701 ev_view_form_field_text_save (EvView    *view,
1702                               GtkWidget *widget)
1703 {
1704         EvFormField *field;
1705
1706         if (!view->document)
1707                 return;
1708
1709         field = g_object_get_data (G_OBJECT (widget), "form-field");
1710
1711         if (field->changed) {
1712                 EvFormFieldText *field_text = EV_FORM_FIELD_TEXT (field);
1713                 GdkRegion       *field_region;
1714
1715                 field_region = ev_view_form_field_get_region (view, field);
1716
1717                 ev_document_forms_form_field_text_set_text (EV_DOCUMENT_FORMS (view->document),
1718                                                             field, field_text->text);
1719                 field->changed = FALSE;
1720                 ev_pixbuf_cache_reload_page (view->pixbuf_cache,
1721                                              field_region,
1722                                              field->page,
1723                                              view->rotation,
1724                                              view->scale);
1725                 gdk_region_destroy (field_region);
1726         }
1727 }
1728
1729 static void
1730 ev_view_form_field_text_changed (GtkWidget   *widget,
1731                                  EvFormField *field)
1732 {
1733         EvFormFieldText *field_text = EV_FORM_FIELD_TEXT (field);
1734         gchar           *text = NULL;
1735
1736         if (GTK_IS_ENTRY (widget)) {
1737                 text = g_strdup (gtk_entry_get_text (GTK_ENTRY (widget)));
1738         } else if (GTK_IS_TEXT_BUFFER (widget)) {
1739                 GtkTextIter start, end;
1740
1741                 gtk_text_buffer_get_bounds (GTK_TEXT_BUFFER (widget), &start, &end);
1742                 text = gtk_text_buffer_get_text (GTK_TEXT_BUFFER (widget),
1743                                                  &start, &end, FALSE);
1744         }
1745
1746         if (!field_text->text ||
1747             (field_text->text && g_ascii_strcasecmp (field_text->text, text) != 0)) {
1748                 g_free (field_text->text);
1749                 field_text->text = text;
1750                 field->changed = TRUE;
1751         }
1752 }
1753
1754 static GtkWidget *
1755 ev_view_form_field_text_create_widget (EvView      *view,
1756                                        EvFormField *field)
1757 {
1758         EvFormFieldText *field_text = EV_FORM_FIELD_TEXT (field);
1759         GtkWidget       *text = NULL;
1760         gchar           *txt;
1761
1762         txt = ev_document_forms_form_field_text_get_text (EV_DOCUMENT_FORMS (view->document),
1763                                                           field);
1764
1765         switch (field_text->type) {
1766                 case EV_FORM_FIELD_TEXT_FILE_SELECT:
1767                         /* TODO */
1768                 case EV_FORM_FIELD_TEXT_NORMAL:
1769                         text = gtk_entry_new ();
1770                         gtk_entry_set_has_frame (GTK_ENTRY (text), FALSE);
1771                         gtk_entry_set_max_length (GTK_ENTRY (text), field_text->max_len);
1772                         gtk_entry_set_visibility (GTK_ENTRY (text), !field_text->is_password);
1773
1774                         if (txt) {
1775                                 gtk_entry_set_text (GTK_ENTRY (text), txt);
1776                                 g_free (txt);
1777                         }
1778
1779                         g_signal_connect (G_OBJECT (text), "changed",
1780                                           G_CALLBACK (ev_view_form_field_text_changed),
1781                                           field);
1782                         g_signal_connect_after (G_OBJECT (text), "activate",
1783                                                 G_CALLBACK (ev_view_form_field_destroy),
1784                                                 view);
1785                         break;
1786                 case EV_FORM_FIELD_TEXT_MULTILINE: {
1787                         GtkTextBuffer *buffer;
1788
1789                         text = gtk_text_view_new ();
1790                         buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (text));
1791
1792                         if (txt) {
1793                                 gtk_text_buffer_set_text (buffer, txt, -1);
1794                                 g_free (txt);
1795                         }
1796
1797                         g_signal_connect (G_OBJECT (buffer), "changed",
1798                                           G_CALLBACK (ev_view_form_field_text_changed),
1799                                           field);
1800                 }
1801                         break;
1802         }
1803
1804         g_object_weak_ref (G_OBJECT (text),
1805                            (GWeakNotify)ev_view_form_field_text_save,
1806                            view);
1807
1808         return text;
1809 }
1810
1811 static void
1812 ev_view_form_field_choice_save (EvView    *view,
1813                                 GtkWidget *widget)
1814 {
1815         EvFormField *field;
1816
1817         if (!view->document)
1818                 return;
1819
1820         field = g_object_get_data (G_OBJECT (widget), "form-field");
1821
1822         if (field->changed) {
1823                 GList             *l;
1824                 EvFormFieldChoice *field_choice = EV_FORM_FIELD_CHOICE (field);
1825                 GdkRegion         *field_region;
1826
1827                 field_region = ev_view_form_field_get_region (view, field);
1828
1829                 if (field_choice->is_editable) {
1830                         ev_document_forms_form_field_choice_set_text (EV_DOCUMENT_FORMS (view->document),
1831                                                                       field, field_choice->text);
1832                 } else {
1833                         ev_document_forms_form_field_choice_unselect_all (EV_DOCUMENT_FORMS (view->document), field);
1834                         for (l = field_choice->selected_items; l; l = g_list_next (l)) {
1835                                 ev_document_forms_form_field_choice_select_item (EV_DOCUMENT_FORMS (view->document),
1836                                                                                  field,
1837                                                                                  GPOINTER_TO_INT (l->data));
1838                         }
1839                 }
1840                 field->changed = FALSE;
1841                 ev_pixbuf_cache_reload_page (view->pixbuf_cache,
1842                                              field_region,
1843                                              field->page,
1844                                              view->rotation,
1845                                              view->scale);
1846                 gdk_region_destroy (field_region);
1847         }
1848 }
1849
1850 static void
1851 ev_view_form_field_choice_changed (GtkWidget   *widget,
1852                                    EvFormField *field)
1853 {
1854         EvFormFieldChoice *field_choice = EV_FORM_FIELD_CHOICE (field);
1855
1856         if (GTK_IS_COMBO_BOX (widget)) {
1857                 gint item;
1858
1859                 item = gtk_combo_box_get_active (GTK_COMBO_BOX (widget));
1860                 if (GPOINTER_TO_INT (field_choice->selected_items->data) != item) {
1861                         g_list_free (field_choice->selected_items);
1862                         field_choice->selected_items = NULL;
1863                         field_choice->selected_items = g_list_prepend (field_choice->selected_items,
1864                                                                        GINT_TO_POINTER (item));
1865                         field->changed = TRUE;
1866                 }
1867
1868                 if (GTK_IS_COMBO_BOX_ENTRY (widget)) {
1869                         gchar *text;
1870
1871                         text = gtk_combo_box_get_active_text (GTK_COMBO_BOX (widget));
1872                         if (!field_choice->text ||
1873                             (field_choice->text && g_ascii_strcasecmp (field_choice->text, text) != 0)) {
1874                                 g_free (field_choice->text);
1875                                 field_choice->text = text;
1876                                 field->changed = TRUE;
1877                         }
1878                 }
1879         } else if (GTK_IS_TREE_SELECTION (widget)) {
1880                 GtkTreeSelection *selection = GTK_TREE_SELECTION (widget);
1881                 GtkTreeModel     *model;
1882                 GList            *items, *l;
1883
1884                 items = gtk_tree_selection_get_selected_rows (selection, &model);
1885                 g_list_free (field_choice->selected_items);
1886                 field_choice->selected_items = NULL;
1887
1888                 for (l = items; l && l->data; l = g_list_next (l)) {
1889                         GtkTreeIter  iter;
1890                         GtkTreePath *path = (GtkTreePath *)l->data;
1891                         gint         item;
1892
1893                         gtk_tree_model_get_iter (model, &iter, path);
1894                         gtk_tree_model_get (model, &iter, 1, &item, -1);
1895
1896                         field_choice->selected_items = g_list_prepend (field_choice->selected_items,
1897                                                                        GINT_TO_POINTER (item));
1898
1899                         gtk_tree_path_free (path);
1900                 }
1901
1902                 g_list_free (items);
1903
1904                 field->changed = TRUE;
1905         }
1906 }
1907
1908 static GtkWidget *
1909 ev_view_form_field_choice_create_widget (EvView      *view,
1910                                          EvFormField *field)
1911 {
1912         EvFormFieldChoice *field_choice = EV_FORM_FIELD_CHOICE (field);
1913         GtkWidget         *choice;
1914         GtkTreeModel      *model;
1915         gint               n_items, i;
1916         gint               selected_item = 0;
1917
1918         n_items = ev_document_forms_form_field_choice_get_n_items (EV_DOCUMENT_FORMS (view->document),
1919                                                                    field);
1920         model = GTK_TREE_MODEL (gtk_list_store_new (2, G_TYPE_STRING, G_TYPE_INT));
1921         for (i = 0; i < n_items; i++) {
1922                 GtkTreeIter iter;
1923                 gchar      *item;
1924
1925                 item = ev_document_forms_form_field_choice_get_item (EV_DOCUMENT_FORMS (view->document),
1926                                                                      field, i);
1927                 if (ev_document_forms_form_field_choice_is_item_selected (
1928                             EV_DOCUMENT_FORMS (view->document), field, i)) {
1929                         selected_item = i;
1930                         /* FIXME: we need a get_selected_items function in poppler */
1931                         field_choice->selected_items = g_list_prepend (field_choice->selected_items,
1932                                                                        GINT_TO_POINTER (i));
1933                 }
1934
1935                 if (item) {
1936                         gtk_list_store_append (GTK_LIST_STORE (model), &iter);
1937                         gtk_list_store_set (GTK_LIST_STORE (model), &iter,
1938                                             0, item,
1939                                             1, i,
1940                                             -1);
1941                         g_free (item);
1942                 }
1943         }
1944
1945         if (field_choice->type == EV_FORM_FIELD_CHOICE_LIST) {
1946                 GtkCellRenderer  *renderer;
1947                 GtkWidget        *tree_view;
1948                 GtkTreeSelection *selection;
1949
1950                 tree_view = gtk_tree_view_new_with_model (model);
1951                 gtk_tree_view_set_headers_visible (GTK_TREE_VIEW (tree_view), FALSE);
1952
1953                 selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (tree_view));
1954                 if (field_choice->multi_select) {
1955                         gtk_tree_selection_set_mode (selection, GTK_SELECTION_MULTIPLE);
1956                 }
1957
1958                 /* TODO: set selected items */
1959
1960                 renderer = gtk_cell_renderer_text_new ();
1961                 gtk_tree_view_insert_column_with_attributes (GTK_TREE_VIEW (tree_view),
1962                                                              0,
1963                                                              "choix", renderer,
1964                                                              "text", 0,
1965                                                              NULL);
1966
1967                 choice = gtk_scrolled_window_new (NULL, NULL);
1968                 gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (choice),
1969                                                 GTK_POLICY_AUTOMATIC,
1970                                                 GTK_POLICY_AUTOMATIC);
1971                 gtk_container_add (GTK_CONTAINER (choice), tree_view);
1972                 gtk_widget_show (tree_view);
1973
1974                 g_signal_connect (G_OBJECT (selection), "changed",
1975                                   G_CALLBACK (ev_view_form_field_choice_changed),
1976                                   field);
1977                 g_signal_connect_after (G_OBJECT (selection), "changed",
1978                                         G_CALLBACK (ev_view_form_field_destroy),
1979                                         view);
1980         } else if (field_choice->is_editable) { /* ComboBoxEntry */
1981                 gchar *text;
1982
1983                 choice = gtk_combo_box_entry_new_with_model (model, 0);
1984                 text = ev_document_forms_form_field_choice_get_text (EV_DOCUMENT_FORMS (view->document), field);
1985                 if (text) {
1986                         gtk_entry_set_text (GTK_ENTRY (gtk_bin_get_child (GTK_BIN (choice))), text);
1987                         g_free (text);
1988                 }
1989
1990                 g_signal_connect (G_OBJECT (choice), "changed",
1991                                   G_CALLBACK (ev_view_form_field_choice_changed),
1992                                   field);
1993                 g_signal_connect_after (G_OBJECT (GTK_BIN (choice)->child), "activate",
1994                                         G_CALLBACK (ev_view_form_field_destroy),
1995                                         view);
1996         } else { /* ComboBoxText */
1997                 GtkCellRenderer *renderer;
1998
1999                 choice = gtk_combo_box_new_with_model (model);
2000                 renderer = gtk_cell_renderer_text_new ();
2001                 gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (choice),
2002                                             renderer, TRUE);
2003                 gtk_cell_layout_set_attributes (GTK_CELL_LAYOUT (choice),
2004                                                 renderer,
2005                                                 "text", 0,
2006                                                 NULL);
2007                 gtk_combo_box_set_active (GTK_COMBO_BOX (choice), selected_item);
2008                 gtk_combo_box_popup (GTK_COMBO_BOX (choice));
2009
2010                 g_signal_connect (G_OBJECT (choice), "changed",
2011                                   G_CALLBACK (ev_view_form_field_choice_changed),
2012                                   field);
2013                 g_signal_connect_after (G_OBJECT (choice), "changed",
2014                                         G_CALLBACK (ev_view_form_field_destroy),
2015                                         view);
2016         }
2017
2018         g_object_unref (model);
2019
2020         g_object_weak_ref (G_OBJECT (choice),
2021                            (GWeakNotify)ev_view_form_field_choice_save,
2022                            view);
2023
2024         return choice;
2025 }
2026
2027 static void
2028 ev_view_handle_form_field (EvView      *view,
2029                            EvFormField *field,
2030                            gdouble      x,
2031                            gdouble      y)
2032 {
2033         GtkWidget   *field_widget = NULL;
2034         GList       *form_field_mapping;
2035         EvRectangle  field_area;
2036         GdkRectangle view_area;
2037
2038         if (field->is_read_only)
2039                 return;
2040
2041         if (EV_IS_FORM_FIELD_BUTTON (field)) {
2042                 field_widget = ev_view_form_field_button_create_widget (view, field);
2043         } else if (EV_IS_FORM_FIELD_TEXT (field)) {
2044                 field_widget = ev_view_form_field_text_create_widget (view, field);
2045         } else if (EV_IS_FORM_FIELD_CHOICE (field)) {
2046                 field_widget = ev_view_form_field_choice_create_widget (view, field);
2047         } else if (EV_IS_FORM_FIELD_SIGNATURE (field)) {
2048                 /* TODO */
2049         }
2050
2051         /* Form field doesn't require a widget */
2052         if (!field_widget)
2053                 return;
2054
2055         g_object_set_data_full (G_OBJECT (field_widget), "form-field",
2056                                 g_object_ref (field),
2057                                 (GDestroyNotify)g_object_unref);
2058
2059         form_field_mapping = ev_pixbuf_cache_get_form_field_mapping (view->pixbuf_cache, field->page);
2060         ev_form_field_mapping_get_area (form_field_mapping, field, &field_area);
2061
2062         doc_rect_to_view_rect (view, field->page, &field_area, &view_area);
2063         view_area.x -= view->scroll_x;
2064         view_area.y -= view->scroll_y;
2065
2066         gtk_layout_put (GTK_LAYOUT (view), field_widget, view_area.x, view_area.y);
2067         gtk_widget_show (field_widget);
2068         gtk_widget_grab_focus (field_widget);
2069 }
2070
2071 /*** GtkWidget implementation ***/
2072
2073 static void
2074 ev_view_size_request_continuous_dual_page (EvView         *view,
2075                                            GtkRequisition *requisition)
2076 {
2077         int max_width;
2078         gint n_pages;
2079         GtkBorder border;
2080
2081         ev_page_cache_get_max_width (view->page_cache, view->rotation,
2082                                      view->scale, &max_width);
2083         compute_border (view, max_width, max_width, &border);
2084
2085         n_pages = ev_page_cache_get_n_pages (view->page_cache) + 1;
2086
2087         requisition->width = (max_width + border.left + border.right) * 2 + (view->spacing * 3);
2088         get_page_y_offset (view, n_pages, view->scale, &requisition->height);
2089
2090         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
2091                 requisition->width = 1;
2092         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
2093                 requisition->width = 1;
2094                 /* FIXME: This could actually be set on one page docs or docs
2095                  * with a strange aspect ratio. */
2096                 /* requisition->height = 1;*/
2097         }
2098 }
2099
2100 static void
2101 ev_view_size_request_continuous (EvView         *view,
2102                                  GtkRequisition *requisition)
2103 {
2104         int max_width;
2105         int n_pages;
2106         GtkBorder border;
2107
2108
2109         ev_page_cache_get_max_width (view->page_cache, view->rotation,
2110                                      view->scale, &max_width);
2111         n_pages = ev_page_cache_get_n_pages (view->page_cache);
2112         compute_border (view, max_width, max_width, &border);
2113
2114         requisition->width = max_width + (view->spacing * 2) + border.left + border.right;
2115         get_page_y_offset (view, n_pages, view->scale, &requisition->height);
2116
2117         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
2118                 requisition->width = 1;
2119         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
2120                 requisition->width = 1;
2121                 /* FIXME: This could actually be set on one page docs or docs
2122                  * with a strange aspect ratio. */
2123                 /* requisition->height = 1;*/
2124         }
2125 }
2126
2127 static void
2128 ev_view_size_request_dual_page (EvView         *view,
2129                                 GtkRequisition *requisition)
2130 {
2131         GtkBorder border;
2132         gint width, height;
2133
2134         /* Find the largest of the two. */
2135         ev_page_cache_get_size (view->page_cache,
2136                                 view->current_page,
2137                                 view->rotation,
2138                                 view->scale,
2139                                 &width, &height);
2140         if (view->current_page + 1 < ev_page_cache_get_n_pages (view->page_cache)) {
2141                 gint width_2, height_2;
2142                 ev_page_cache_get_size (view->page_cache,
2143                                         view->current_page + 1,
2144                                         view->rotation,
2145                                         view->scale,
2146                                         &width_2, &height_2);
2147                 if (width_2 > width) {
2148                         width = width_2;
2149                         height = height_2;
2150                 }
2151         }
2152         compute_border (view, width, height, &border);
2153
2154         requisition->width = ((width + border.left + border.right) * 2) +
2155                 (view->spacing * 3);
2156         requisition->height = (height + border.top + border.bottom) +
2157                 (view->spacing * 2);
2158
2159         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
2160                 requisition->width = 1;
2161         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
2162                 requisition->width = 1;
2163                 requisition->height = 1;
2164         }
2165 }
2166
2167 static void
2168 ev_view_size_request_single_page (EvView         *view,
2169                                   GtkRequisition *requisition)
2170 {
2171         GtkBorder border;
2172         gint width, height;
2173
2174         ev_page_cache_get_size (view->page_cache,
2175                                 view->current_page,
2176                                 view->rotation,
2177                                 view->scale,
2178                                 &width, &height);
2179         compute_border (view, width, height, &border);
2180
2181         requisition->width = width + border.left + border.right + (2 * view->spacing);
2182         requisition->height = height + border.top + border.bottom + (2 * view->spacing);
2183
2184         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
2185                 requisition->width = 1;
2186                 requisition->height = height + border.top + border.bottom + (2 * view->spacing);
2187         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
2188                 requisition->width = 1;
2189                 requisition->height = 1;
2190         }
2191 }
2192
2193 static void
2194 ev_view_size_request (GtkWidget      *widget,
2195                       GtkRequisition *requisition)
2196 {
2197         EvView *view = EV_VIEW (widget);
2198
2199         if (view->document == NULL) {
2200                 requisition->width = 1;
2201                 requisition->height = 1;
2202                 return;
2203         }
2204
2205         if (view->presentation) {
2206                 requisition->width = 1;
2207                 requisition->height = 1;
2208                 return;
2209         }
2210
2211         if (view->continuous && view->dual_page)
2212                 ev_view_size_request_continuous_dual_page (view, requisition);
2213         else if (view->continuous)
2214                 ev_view_size_request_continuous (view, requisition);
2215         else if (view->dual_page)
2216                 ev_view_size_request_dual_page (view, requisition);
2217         else
2218                 ev_view_size_request_single_page (view, requisition);
2219 }
2220
2221 static void
2222 ev_view_size_allocate (GtkWidget      *widget,
2223                        GtkAllocation  *allocation)
2224 {
2225         EvView *view = EV_VIEW (widget);
2226         GList  *children, *l;
2227
2228         GTK_WIDGET_CLASS (ev_view_parent_class)->size_allocate (widget, allocation);
2229
2230         if (view->sizing_mode == EV_SIZING_FIT_WIDTH ||
2231             view->sizing_mode == EV_SIZING_BEST_FIT) {
2232
2233                 g_signal_emit (view, signals[SIGNAL_ZOOM_INVALID], 0);
2234
2235                 ev_view_size_request (widget, &widget->requisition);
2236         }
2237
2238         view_set_adjustment_values (view, GTK_ORIENTATION_HORIZONTAL);
2239         view_set_adjustment_values (view, GTK_ORIENTATION_VERTICAL);
2240
2241         if (view->document)
2242                 view_update_range_and_current_page (view);
2243
2244         view->pending_scroll = SCROLL_TO_KEEP_POSITION;
2245         view->pending_resize = FALSE;
2246
2247         children = gtk_container_get_children (GTK_CONTAINER (widget));
2248         for (l = children; l && l->data; l = g_list_next (l)) {
2249                 EvFormField   *field;
2250                 EvRectangle    field_area;
2251                 GdkRectangle   view_area;
2252                 GList         *form_field_mapping;
2253                 GtkAllocation  child_allocation;
2254                 GtkRequisition child_requisition;
2255                 GtkWidget     *child = (GtkWidget *)l->data;
2256
2257                 field = g_object_get_data (G_OBJECT (child), "form-field");
2258                 if (!field)
2259                         continue;
2260
2261                 form_field_mapping = ev_pixbuf_cache_get_form_field_mapping (view->pixbuf_cache,
2262                                                                              field->page);
2263                 ev_form_field_mapping_get_area (form_field_mapping, field, &field_area);
2264
2265                 doc_rect_to_view_rect (view, field->page, &field_area, &view_area);
2266                 view_area.x -= view->scroll_x;
2267                 view_area.y -= view->scroll_y;
2268
2269                 gtk_widget_size_request (child, &child_requisition);
2270                 if (child_requisition.width != view_area.width ||
2271                     child_requisition.height != view_area.height)
2272                         gtk_widget_set_size_request (child, view_area.width, view_area.height);
2273
2274                 gtk_container_child_get (GTK_CONTAINER (widget),
2275                                          child,
2276                                          "x", &child_allocation.x,
2277                                          "y", &child_allocation.y,
2278                                          NULL);
2279                 if (child_allocation.x != view_area.x ||
2280                     child_allocation.y != view_area.y) {
2281                         gtk_layout_move (GTK_LAYOUT (widget), child, view_area.x, view_area.y);
2282                 }
2283         }
2284         g_list_free (children);
2285 }
2286
2287 static void
2288 ev_view_realize (GtkWidget *widget)
2289 {
2290         EvView *view = EV_VIEW (widget);
2291
2292         if (GTK_WIDGET_CLASS (ev_view_parent_class)->realize)
2293                 (* GTK_WIDGET_CLASS (ev_view_parent_class)->realize) (widget);
2294
2295         gdk_window_set_events (view->layout.bin_window,
2296                                (gdk_window_get_events (view->layout.bin_window) |
2297                                 GDK_EXPOSURE_MASK |
2298                                 GDK_BUTTON_PRESS_MASK |
2299                                 GDK_BUTTON_RELEASE_MASK |
2300                                 GDK_SCROLL_MASK |
2301                                 GDK_KEY_PRESS_MASK |
2302                                 GDK_POINTER_MOTION_MASK |
2303                                 GDK_POINTER_MOTION_HINT_MASK |
2304                                 GDK_ENTER_NOTIFY_MASK |
2305                                 GDK_LEAVE_NOTIFY_MASK));
2306
2307         if (view->presentation)
2308                 gdk_window_set_background (view->layout.bin_window, &widget->style->black);
2309         else
2310                 gdk_window_set_background (view->layout.bin_window, &widget->style->mid [GTK_STATE_NORMAL]);
2311 }
2312
2313 static gboolean
2314 ev_view_scroll_event (GtkWidget *widget, GdkEventScroll *event)
2315 {
2316         EvView *view = EV_VIEW (widget);
2317         guint state;
2318
2319         state = event->state & gtk_accelerator_get_default_mod_mask ();
2320
2321         if (state == GDK_CONTROL_MASK && view->presentation == FALSE) {
2322                 ev_view_set_sizing_mode (view, EV_SIZING_FREE);
2323
2324                 if (event->direction == GDK_SCROLL_UP ||
2325                     event->direction == GDK_SCROLL_LEFT) {
2326                         if (ev_view_can_zoom_in (view)) {
2327                                 ev_view_zoom_in (view);
2328                         }
2329                 } else {
2330                         if (ev_view_can_zoom_out (view)) {
2331                                 ev_view_zoom_out (view);
2332                         }
2333                 }
2334
2335                 return TRUE;
2336         }
2337
2338         view->jump_to_find_result = FALSE;
2339         /* Shift+Wheel scrolls the in the perpendicular direction */
2340         if (state & GDK_SHIFT_MASK) {
2341                 if (event->direction == GDK_SCROLL_UP)
2342                         event->direction = GDK_SCROLL_LEFT;
2343                 if (event->direction == GDK_SCROLL_LEFT)
2344                         event->direction = GDK_SCROLL_UP;
2345                 if (event->direction == GDK_SCROLL_DOWN)
2346                         event->direction = GDK_SCROLL_RIGHT;
2347                 if (event->direction == GDK_SCROLL_RIGHT)
2348                         event->direction = GDK_SCROLL_DOWN;
2349
2350                 event->state &= ~GDK_SHIFT_MASK;
2351                 state &= ~GDK_SHIFT_MASK;
2352         }
2353
2354         if (state == 0 && view->presentation) {
2355                 switch (event->direction) {
2356                         case GDK_SCROLL_DOWN:
2357                         case GDK_SCROLL_RIGHT:
2358                                 ev_view_next_page (view);
2359                                 break;
2360                         case GDK_SCROLL_UP:
2361                         case GDK_SCROLL_LEFT:
2362                                 ev_view_previous_page (view);
2363                                 break;
2364                 }
2365
2366                 return TRUE;
2367         }
2368
2369         return FALSE;
2370 }
2371
2372 static EvViewSelection *
2373 find_selection_for_page (EvView *view,
2374                          gint    page)
2375 {
2376         GList *list;
2377
2378         for (list = view->selection_info.selections; list != NULL; list = list->next) {
2379                 EvViewSelection *selection;
2380
2381                 selection = (EvViewSelection *) list->data;
2382
2383                 if (selection->page == page)
2384                         return selection;
2385         }
2386
2387         return NULL;
2388 }
2389
2390 static void
2391 draw_end_presentation_page (EvView       *view,
2392                             GdkRectangle *page_area)
2393 {
2394         PangoLayout *layout;
2395         PangoFontDescription *font_desc;
2396         gchar *markup;
2397         const gchar *text = _("End of presentation. Press Escape to exit.");
2398
2399         if (view->presentation_state != EV_PRESENTATION_END)
2400                 return;
2401
2402         layout = gtk_widget_create_pango_layout (GTK_WIDGET (view), NULL);
2403         markup = g_strdup_printf ("<span foreground=\"white\">%s</span>", text);
2404         pango_layout_set_markup (layout, markup, -1);
2405         g_free (markup);
2406
2407         font_desc = pango_font_description_new ();
2408         pango_font_description_set_size (font_desc, 16 * PANGO_SCALE);
2409         pango_layout_set_font_description (layout, font_desc);
2410
2411         gtk_paint_layout (GTK_WIDGET (view)->style,
2412                           view->layout.bin_window,
2413                           GTK_WIDGET_STATE (view),
2414                           FALSE,
2415                           page_area,
2416                           GTK_WIDGET (view),
2417                           NULL,
2418                           page_area->x + 15,
2419                           page_area->y + 15,
2420                           layout);
2421
2422         pango_font_description_free (font_desc);
2423         g_object_unref (layout);
2424 }
2425
2426 static gboolean
2427 ev_view_expose_event (GtkWidget      *widget,
2428                       GdkEventExpose *event)
2429 {
2430         EvView *view = EV_VIEW (widget);
2431         int i;
2432
2433         if (view->presentation) {
2434                 switch (view->presentation_state) {
2435                         case EV_PRESENTATION_END: {
2436                                 GdkRectangle area = {0};
2437
2438                                 area.width = widget->allocation.width;
2439                                 area.height = widget->allocation.height;
2440
2441                                 draw_end_presentation_page (view, &area);
2442                         }
2443                                 return FALSE;
2444                         case EV_PRESENTATION_BLACK:
2445                         case EV_PRESENTATION_WHITE:
2446                                 return FALSE;
2447                         case EV_PRESENTATION_NORMAL:
2448                         default:
2449                                 break;
2450                 }
2451         } else if (view->loading) {
2452                 GdkRectangle area = {0};
2453
2454                 area.width = widget->allocation.width;
2455                 area.height = widget->allocation.height;
2456
2457                 draw_loading_text (view,
2458                                    &area,
2459                                    &(event->area));
2460         }
2461
2462         if (view->document == NULL)
2463                 return FALSE;
2464
2465         for (i = view->start_page; i <= view->end_page; i++) {
2466                 GdkRectangle page_area;
2467                 GtkBorder border;
2468                 gboolean page_ready = TRUE;
2469
2470                 if (!get_page_extents (view, i, &page_area, &border))
2471                         continue;
2472
2473                 page_area.x -= view->scroll_x;
2474                 page_area.y -= view->scroll_y;
2475
2476                 draw_one_page (view, i, &page_area, &border, &(event->area), &page_ready);
2477
2478                 if (page_ready && EV_IS_DOCUMENT_FIND (view->document))
2479                         highlight_find_results (view, i);
2480         }
2481
2482         if (GTK_WIDGET_CLASS (ev_view_parent_class)->expose_event)
2483                 (* GTK_WIDGET_CLASS (ev_view_parent_class)->expose_event) (widget, event);
2484
2485         return FALSE;
2486 }
2487
2488 static gboolean
2489 ev_view_do_popup_menu (EvView *view,
2490                        gdouble x,
2491                        gdouble y)
2492 {
2493         EvLink  *link;
2494         EvImage *image;
2495
2496         image = ev_view_get_image_at_location (view, x, y);
2497         if (image) {
2498                 g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, image);
2499                 return TRUE;
2500         }
2501
2502         link = ev_view_get_link_at_location (view, x, y);
2503         if (link) {
2504                 g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, link);
2505                 return TRUE;
2506         }
2507
2508         g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, NULL);
2509
2510         return TRUE;
2511 }
2512
2513 static gboolean
2514 ev_view_popup_menu (GtkWidget *widget)
2515 {
2516         gint x, y;
2517
2518         gtk_widget_get_pointer (widget, &x, &y);
2519         return ev_view_do_popup_menu (EV_VIEW (widget), x, y);
2520 }
2521
2522 static gboolean
2523 ev_view_button_press_event (GtkWidget      *widget,
2524                             GdkEventButton *event)
2525 {
2526         EvView *view = EV_VIEW (widget);
2527
2528         if (!view->document)
2529                 return FALSE;
2530
2531         if (!GTK_WIDGET_HAS_FOCUS (widget)) {
2532                 gtk_widget_grab_focus (widget);
2533         }
2534
2535         view->pressed_button = event->button;
2536         view->selection_info.in_drag = FALSE;
2537
2538         switch (event->button) {
2539                 case 1: {
2540                         EvImage *image;
2541                         EvFormField *field;
2542
2543                         if (view->selection_info.selections) {
2544                                 if (location_in_selected_text (view,
2545                                                                event->x + view->scroll_x,
2546                                                                event->y + view->scroll_y)) {
2547                                         view->selection_info.in_drag = TRUE;
2548                                 } else {
2549                                         clear_selection (view);
2550
2551                                         view->selection_info.start.x = event->x + view->scroll_x;
2552                                         view->selection_info.start.y = event->y + view->scroll_y;
2553                                 }
2554
2555                                 gtk_widget_queue_draw (widget);
2556                         } else if (!location_in_text (view, event->x + view->scroll_x, event->y + view->scroll_y) &&
2557                                    (image = ev_view_get_image_at_location (view, event->x, event->y))) {
2558                                 if (view->image_dnd_info.image)
2559                                         g_object_unref (view->image_dnd_info.image);
2560                                 view->image_dnd_info.image = g_object_ref (image);
2561                                 view->image_dnd_info.in_drag = TRUE;
2562
2563                                 view->image_dnd_info.start.x = event->x + view->scroll_x;
2564                                 view->image_dnd_info.start.y = event->y + view->scroll_y;
2565                         } else if ((field = ev_view_get_form_field_at_location (view, event->x, event->y))) {
2566                                 ev_view_remove_all (view);
2567                                 ev_view_handle_form_field (view, field, event->x, event->y);
2568                         } else {
2569                                 ev_view_remove_all (view);
2570                                 view->selection_info.start.x = event->x + view->scroll_x;
2571                                 view->selection_info.start.y = event->y + view->scroll_y;
2572                         }
2573                 }
2574                         return TRUE;
2575                 case 2:
2576                         /* use root coordinates as reference point because
2577                          * scrolling changes window relative coordinates */
2578                         view->drag_info.start.x = event->x_root;
2579                         view->drag_info.start.y = event->y_root;
2580                         view->drag_info.hadj = gtk_adjustment_get_value (view->hadjustment);
2581                         view->drag_info.vadj = gtk_adjustment_get_value (view->vadjustment);
2582
2583                         ev_view_set_cursor (view, EV_VIEW_CURSOR_DRAG);
2584
2585                         return TRUE;
2586                 case 3:
2587                         return ev_view_do_popup_menu (view, event->x, event->y);
2588         }
2589
2590         return FALSE;
2591 }
2592
2593 static void
2594 ev_view_remove_all (EvView *view)
2595 {
2596         GList *children, *child;
2597
2598         children = gtk_container_get_children (GTK_CONTAINER (view));
2599         for (child = children; child && child->data; child = g_list_next (child)) {
2600                 gtk_container_remove (GTK_CONTAINER (view),
2601                                       GTK_WIDGET (child->data));
2602         }
2603         g_list_free (children);
2604 }
2605
2606 /*** Drag and Drop ***/
2607 static void
2608 ev_view_drag_data_get (GtkWidget        *widget,
2609                        GdkDragContext   *context,
2610                        GtkSelectionData *selection_data,
2611                        guint             info,
2612                        guint             time)
2613 {
2614         EvView *view = EV_VIEW (widget);
2615
2616         switch (info) {
2617                 case TARGET_DND_TEXT:
2618                         if (view->selection_info.selections &&
2619                             ev_document_can_get_text (view->document)) {
2620                                 gchar *text;
2621
2622                                 text = get_selected_text (view);
2623
2624                                 gtk_selection_data_set_text (selection_data,
2625                                                              text,
2626                                                              strlen (text));
2627
2628                                 g_free (text);
2629                         }
2630                         break;
2631                 case TARGET_DND_IMAGE:
2632                         if (view->image_dnd_info.image) {
2633                                 GdkPixbuf *pixbuf;
2634
2635                                 pixbuf = ev_image_get_pixbuf (view->image_dnd_info.image);
2636                                 gtk_selection_data_set_pixbuf (selection_data, pixbuf);
2637                         }
2638                         break;
2639                 case TARGET_DND_URI:
2640                         if (view->image_dnd_info.image) {
2641                                 const gchar *tmp_uri;
2642                                 gchar      **uris;
2643
2644                                 tmp_uri = ev_image_save_tmp (view->image_dnd_info.image);
2645
2646                                 uris = g_new0 (gchar *, 2);
2647                                 uris[0] = (gchar *)tmp_uri;
2648
2649                                 gtk_selection_data_set_uris (selection_data, uris);
2650
2651                                 /* g_free instead of g_strfreev since tmp_uri is const */
2652                                 g_free (uris);
2653                         }
2654         }
2655 }
2656
2657 static gboolean
2658 ev_view_drag_motion (GtkWidget      *widget,
2659                      GdkDragContext *context,
2660                      gint            x,
2661                      gint            y,
2662                      guint           time)
2663 {
2664         if (gtk_drag_get_source_widget (context) == widget)
2665                 gdk_drag_status (context, 0, time);
2666         else
2667                 gdk_drag_status (context, context->suggested_action, time);
2668
2669         return TRUE;
2670 }
2671
2672 static void
2673 ev_view_drag_data_received (GtkWidget          *widget,
2674                             GdkDragContext     *context,
2675                             gint                x,
2676                             gint                y,
2677                             GtkSelectionData   *selection_data,
2678                             guint               info,
2679                             guint               time)
2680 {
2681         gchar  **uris;
2682         gint     i = 0;
2683         GSList  *uri_list = NULL;
2684
2685         uris = gtk_selection_data_get_uris (selection_data);
2686         if (!uris) {
2687                 gtk_drag_finish (context, FALSE, FALSE, time);
2688                 return;
2689         }
2690
2691         for (i = 0; uris[i]; i++) {
2692                 uri_list = g_slist_prepend (uri_list, (gpointer) uris[i]);
2693         }
2694
2695         ev_application_open_uri_list (EV_APP, uri_list,
2696                                       gtk_widget_get_screen (widget),
2697                                       0);
2698         gtk_drag_finish (context, TRUE, FALSE, time);
2699
2700         g_strfreev (uris);
2701         g_slist_free (uri_list);
2702 }
2703
2704
2705 static gboolean
2706 selection_update_idle_cb (EvView *view)
2707 {
2708         compute_selections (view, &view->selection_info.start, &view->motion);
2709         view->selection_update_id = 0;
2710         return FALSE;
2711 }
2712
2713 static gboolean
2714 selection_scroll_timeout_cb (EvView *view)
2715 {
2716         gint x, y, shift = 0;
2717         GtkWidget *widget = GTK_WIDGET (view);
2718
2719         gtk_widget_get_pointer (widget, &x, &y);
2720
2721         if (y > widget->allocation.height) {
2722                 shift = (y - widget->allocation.height) / 2;
2723         } else if (y < 0) {
2724                 shift = y / 2;
2725         }
2726
2727         if (shift)
2728                 gtk_adjustment_set_value (view->vadjustment,
2729                                           CLAMP (view->vadjustment->value + shift,
2730                                           view->vadjustment->lower,
2731                                           view->vadjustment->upper -
2732                                           view->vadjustment->page_size));
2733
2734         if (x > widget->allocation.width) {
2735                 shift = (x - widget->allocation.width) / 2;
2736         } else if (x < 0) {
2737                 shift = x / 2;
2738         }
2739
2740         if (shift)
2741                 gtk_adjustment_set_value (view->hadjustment,
2742                                           CLAMP (view->hadjustment->value + shift,
2743                                           view->hadjustment->lower,
2744                                           view->hadjustment->upper -
2745                                           view->hadjustment->page_size));
2746
2747         return TRUE;
2748 }
2749
2750 static gboolean
2751 ev_view_motion_notify_event (GtkWidget      *widget,
2752                              GdkEventMotion *event)
2753 {
2754         EvView *view = EV_VIEW (widget);
2755         gint x, y;
2756
2757         if (!view->document)
2758                 return FALSE;
2759
2760         if (event->is_hint || event->window != view->layout.bin_window) {
2761             gtk_widget_get_pointer (widget, &x, &y);
2762         } else {
2763             x = event->x;
2764             y = event->y;
2765         }
2766
2767         if (view->selection_info.in_drag) {
2768                 if (gtk_drag_check_threshold (widget,
2769                                               view->selection_info.start.x,
2770                                               view->selection_info.start.y,
2771                                               x, y)) {
2772                         GtkTargetList *target_list = gtk_target_list_new (NULL, 0);
2773
2774                         gtk_target_list_add_text_targets (target_list, TARGET_DND_TEXT);
2775
2776                         gtk_drag_begin (widget, target_list,
2777                                         GDK_ACTION_COPY,
2778                                         1, (GdkEvent *)event);
2779
2780                         view->selection_info.in_drag = FALSE;
2781
2782                         gtk_target_list_unref (target_list);
2783
2784                         return TRUE;
2785                 }
2786         } else if (view->image_dnd_info.in_drag) {
2787                 if (gtk_drag_check_threshold (widget,
2788                                               view->selection_info.start.x,
2789                                               view->selection_info.start.y,
2790                                               x, y)) {
2791                         GtkTargetList *target_list = gtk_target_list_new (NULL, 0);
2792
2793                         gtk_target_list_add_uri_targets (target_list, TARGET_DND_URI);
2794                         gtk_target_list_add_image_targets (target_list, TARGET_DND_IMAGE, TRUE);
2795
2796                         gtk_drag_begin (widget, target_list,
2797                                         GDK_ACTION_COPY,
2798                                         1, (GdkEvent *)event);
2799
2800                         view->image_dnd_info.in_drag = FALSE;
2801
2802                         gtk_target_list_unref (target_list);
2803
2804                         return TRUE;
2805                 }
2806         }
2807
2808         /* For the Evince 0.4.x release, we limit selection to un-rotated
2809          * documents only.
2810          */
2811         if (view->pressed_button == 1 && view->rotation == 0) {
2812
2813                 /* Schedule timeout to scroll during selection and additionally
2814                  * scroll once to allow arbitrary speed. */
2815                 if (!view->selection_scroll_id)
2816                     view->selection_scroll_id = g_timeout_add (SCROLL_TIME, (GSourceFunc)selection_scroll_timeout_cb, view);
2817                 else
2818                     selection_scroll_timeout_cb (view);
2819
2820                 view->selection_info.in_selection = TRUE;
2821                 view->motion.x = x + view->scroll_x;
2822                 view->motion.y = y + view->scroll_y;
2823
2824                 /* Queue an idle to handle the motion.  We do this because
2825                  * handling any selection events in the motion could be slower
2826                  * than new motion events reach us.  We always put it in the
2827                  * idle to make sure we catch up and don't visibly lag the
2828                  * mouse. */
2829                 if (!view->selection_update_id)
2830                         view->selection_update_id = g_idle_add ((GSourceFunc)selection_update_idle_cb, view);
2831
2832                 return TRUE;
2833         } else if (view->pressed_button == 2) {
2834                 if (!view->drag_info.in_drag) {
2835                         gboolean start;
2836
2837                         start = gtk_drag_check_threshold (widget,
2838                                                           view->drag_info.start.x,
2839                                                           view->drag_info.start.y,
2840                                                           event->x_root,
2841                                                           event->y_root);
2842                         view->drag_info.in_drag = start;
2843                 }
2844
2845                 if (view->drag_info.in_drag) {
2846                         int dx, dy;
2847                         gdouble dhadj_value, dvadj_value;
2848
2849                         dx = event->x_root - view->drag_info.start.x;
2850                         dy = event->y_root - view->drag_info.start.y;
2851
2852                         dhadj_value = view->hadjustment->page_size *
2853                                       (gdouble)dx / widget->allocation.width;
2854                         dvadj_value = view->vadjustment->page_size *
2855                                       (gdouble)dy / widget->allocation.height;
2856
2857                         /* clamp scrolling to visible area */
2858                         gtk_adjustment_set_value (view->hadjustment,
2859                                                   MIN(view->drag_info.hadj - dhadj_value,
2860                                                       view->hadjustment->upper -
2861                                                       view->hadjustment->page_size));
2862                         gtk_adjustment_set_value (view->vadjustment,
2863                                                   MIN(view->drag_info.vadj - dvadj_value,
2864                                                       view->vadjustment->upper -
2865                                                       view->vadjustment->page_size));
2866
2867                         return TRUE;
2868                 }
2869         } else if (view->pressed_button <= 0) {
2870                 ev_view_handle_cursor_over_xy (view, x, y);
2871                 return TRUE;
2872         }
2873
2874         return FALSE;
2875 }
2876
2877 static gboolean
2878 ev_view_button_release_event (GtkWidget      *widget,
2879                               GdkEventButton *event)
2880 {
2881         EvView *view = EV_VIEW (widget);
2882         EvLink *link;
2883
2884         if (view->pressed_button == 2) {
2885                 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
2886         }
2887
2888         if (view->document && view->pressed_button != 3) {
2889                 link = ev_view_get_link_at_location (view, event->x, event->y);
2890         } else {
2891                 link = NULL;
2892         }
2893
2894         view->pressed_button = -1;
2895         view->drag_info.in_drag = FALSE;
2896         view->image_dnd_info.in_drag = FALSE;
2897
2898         if (view->selection_scroll_id) {
2899             g_source_remove (view->selection_scroll_id);
2900             view->selection_scroll_id = 0;
2901         }
2902         if (view->selection_update_id) {
2903             g_source_remove (view->selection_update_id);
2904             view->selection_update_id = 0;
2905         }
2906
2907         if (view->selection_info.selections) {
2908                 ev_view_update_primary_selection (view);
2909
2910                 if (view->selection_info.in_drag) {
2911                         clear_selection (view);
2912                         gtk_widget_queue_draw (widget);
2913                 }
2914
2915                 view->selection_info.in_drag = FALSE;
2916         } else if (link) {
2917                 if (event->button == 2) {
2918                         EvLinkAction    *action;
2919                         EvLinkActionType type;
2920
2921                         action = ev_link_get_action (link);
2922                         if (!action)
2923                                 return FALSE;
2924
2925                         type = ev_link_action_get_action_type (action);
2926                         if (type == EV_LINK_ACTION_TYPE_GOTO_DEST) {
2927                                 g_signal_emit (view,
2928                                                signals[SIGNAL_EXTERNAL_LINK],
2929                                                0, action);
2930                         }
2931                 } else {
2932                         ev_view_handle_link (view, link);
2933                 }
2934         } else if (view->presentation) {
2935                 switch (event->button) {
2936                         case 1:
2937                                 ev_view_next_page (view);
2938                                 return TRUE;
2939                         case 3:
2940                                 ev_view_previous_page (view);
2941                                 return TRUE;
2942                 }
2943         }
2944
2945         return FALSE;
2946 }
2947
2948 /* Goto Window */
2949 /* Cut and paste from gtkwindow.c */
2950 static void
2951 send_focus_change (GtkWidget *widget,
2952                    gboolean   in)
2953 {
2954         GdkEvent *fevent = gdk_event_new (GDK_FOCUS_CHANGE);
2955
2956         g_object_ref (widget);
2957
2958         if (in)
2959                 GTK_WIDGET_SET_FLAGS (widget, GTK_HAS_FOCUS);
2960         else
2961                 GTK_WIDGET_UNSET_FLAGS (widget, GTK_HAS_FOCUS);
2962
2963         fevent->focus_change.type = GDK_FOCUS_CHANGE;
2964         fevent->focus_change.window = g_object_ref (widget->window);
2965         fevent->focus_change.in = in;
2966
2967         gtk_widget_event (widget, fevent);
2968
2969         g_object_notify (G_OBJECT (widget), "has-focus");
2970
2971         g_object_unref (widget);
2972         gdk_event_free (fevent);
2973 }
2974
2975 static void
2976 ev_view_goto_window_hide (EvView *view)
2977 {
2978         /* send focus-in event */
2979         send_focus_change (view->goto_entry, FALSE);
2980         gtk_widget_hide (view->goto_window);
2981         gtk_entry_set_text (GTK_ENTRY (view->goto_entry), "");
2982 }
2983
2984 static gboolean
2985 ev_view_goto_window_delete_event (GtkWidget   *widget,
2986                                   GdkEventAny *event,
2987                                   EvView      *view)
2988 {
2989         ev_view_goto_window_hide (view);
2990
2991         return TRUE;
2992 }
2993
2994 static gboolean
2995 key_is_numeric (guint keyval)
2996 {
2997         return ((keyval >= GDK_0 && keyval <= GDK_9) ||
2998                 (keyval >= GDK_KP_0 && keyval <= GDK_KP_9));
2999 }
3000
3001 static gboolean
3002 ev_view_goto_window_key_press_event (GtkWidget   *widget,
3003                                      GdkEventKey *event,
3004                                      EvView      *view)
3005 {
3006         switch (event->keyval) {
3007                 case GDK_Escape:
3008                 case GDK_Tab:
3009                 case GDK_KP_Tab:
3010                 case GDK_ISO_Left_Tab:
3011                         ev_view_goto_window_hide (view);
3012                         return TRUE;
3013                 case GDK_Return:
3014                 case GDK_KP_Enter:
3015                 case GDK_ISO_Enter:
3016                 case GDK_BackSpace:
3017                 case GDK_Delete:
3018                         return FALSE;
3019                 default:
3020                         if (!key_is_numeric (event->keyval))
3021                                 return TRUE;
3022         }
3023
3024         return FALSE;
3025 }
3026
3027 static gboolean
3028 ev_view_goto_window_button_press_event (GtkWidget      *widget,
3029                                         GdkEventButton *event,
3030                                         EvView         *view)
3031 {
3032         ev_view_goto_window_hide (view);
3033
3034         return TRUE;
3035 }
3036
3037 static void
3038 ev_view_goto_entry_activate (GtkEntry *entry,
3039                              EvView   *view)
3040 {
3041         const gchar *text;
3042         gint         page;
3043
3044         text = gtk_entry_get_text (entry);
3045         page = atoi (text) - 1;
3046
3047         ev_view_goto_window_hide (view);
3048
3049         if (page >= 0 &&
3050             page < ev_page_cache_get_n_pages (view->page_cache))
3051                 ev_page_cache_set_current_page (view->page_cache, page);
3052 }
3053
3054 static void
3055 ev_view_goto_window_create (EvView *view)
3056 {
3057         GtkWidget *frame, *hbox, *toplevel, *label;
3058
3059         toplevel = gtk_widget_get_toplevel (GTK_WIDGET (view));
3060
3061         if (view->goto_window) {
3062                 if (GTK_WINDOW (toplevel)->group)
3063                         gtk_window_group_add_window (GTK_WINDOW (toplevel)->group,
3064                                                      GTK_WINDOW (view->goto_window));
3065                 else if (GTK_WINDOW (view->goto_window)->group)
3066                         gtk_window_group_remove_window (GTK_WINDOW (view->goto_window)->group,
3067                                                         GTK_WINDOW (view->goto_window));
3068                 return;
3069         }
3070
3071         view->goto_window = gtk_window_new (GTK_WINDOW_POPUP);
3072
3073         if (GTK_WINDOW (toplevel)->group)
3074                 gtk_window_group_add_window (GTK_WINDOW (toplevel)->group,
3075                                              GTK_WINDOW (view->goto_window));
3076
3077         gtk_window_set_modal (GTK_WINDOW (view->goto_window), TRUE);
3078
3079         g_signal_connect (view->goto_window, "delete_event",
3080                           G_CALLBACK (ev_view_goto_window_delete_event),
3081                           view);
3082         g_signal_connect (view->goto_window, "key_press_event",
3083                           G_CALLBACK (ev_view_goto_window_key_press_event),
3084                           view);
3085         g_signal_connect (view->goto_window, "button_press_event",
3086                           G_CALLBACK (ev_view_goto_window_button_press_event),
3087                           view);
3088
3089         frame = gtk_frame_new (NULL);
3090         gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_ETCHED_IN);
3091         gtk_container_add (GTK_CONTAINER (view->goto_window), frame);
3092         gtk_widget_show (frame);
3093
3094         hbox = gtk_hbox_new (FALSE, 0);
3095         gtk_container_set_border_width (GTK_CONTAINER (hbox), 3);
3096         gtk_container_add (GTK_CONTAINER (frame), hbox);
3097         gtk_widget_show (hbox);
3098
3099         label = gtk_label_new(_("Jump to page:"));
3100         gtk_box_pack_start (GTK_BOX (hbox), label, TRUE, TRUE, 3);
3101         gtk_widget_show (label);
3102         gtk_widget_realize (label);
3103
3104         view->goto_entry = gtk_entry_new ();
3105         g_signal_connect (view->goto_entry, "activate",
3106                           G_CALLBACK (ev_view_goto_entry_activate),
3107                           view);
3108         gtk_box_pack_start_defaults (GTK_BOX (hbox), view->goto_entry);
3109         gtk_widget_show (view->goto_entry);
3110         gtk_widget_realize (view->goto_entry);
3111 }
3112
3113 static void
3114 ev_view_goto_entry_grab_focus (EvView *view)
3115 {
3116         GtkWidgetClass *entry_parent_class;
3117
3118         entry_parent_class = g_type_class_peek_parent (GTK_ENTRY_GET_CLASS (view->goto_entry));
3119         (entry_parent_class->grab_focus) (view->goto_entry);
3120
3121         send_focus_change (view->goto_entry, TRUE);
3122 }
3123
3124 static void
3125 ev_view_goto_window_send_key_event (EvView   *view,
3126                                     GdkEvent *event)
3127 {
3128         GdkEventKey *new_event;
3129         GdkScreen   *screen;
3130
3131         /* Move goto window off screen */
3132         screen = gtk_widget_get_screen (GTK_WIDGET (view));
3133         gtk_window_move (GTK_WINDOW (view->goto_window),
3134                          gdk_screen_get_width (screen) + 1,
3135                          gdk_screen_get_height (screen) + 1);
3136         gtk_widget_show (view->goto_window);
3137
3138         new_event = (GdkEventKey *) gdk_event_copy (event);
3139         g_object_unref (new_event->window);
3140         new_event->window = g_object_ref (view->goto_window->window);
3141         gtk_widget_realize (view->goto_window);
3142
3143         gtk_widget_event (view->goto_window, (GdkEvent *)new_event);
3144         gdk_event_free ((GdkEvent *)new_event);
3145         gtk_widget_hide (view->goto_window);
3146 }
3147
3148 static gboolean
3149 ev_view_key_press_event (GtkWidget   *widget,
3150                          GdkEventKey *event)
3151 {
3152         EvView *view = EV_VIEW (widget);
3153         EvPresentationState current;
3154
3155         if (!view->document)
3156                 return FALSE;
3157
3158         if (!view->presentation ||
3159             view->presentation_state == EV_PRESENTATION_END)
3160                 return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
3161
3162
3163         current = view->presentation_state;
3164
3165         switch (event->keyval) {
3166                 case GDK_b:
3167                 case GDK_B:
3168                         view->presentation_state =
3169                                 (view->presentation_state == EV_PRESENTATION_BLACK) ?
3170                                 EV_PRESENTATION_NORMAL : EV_PRESENTATION_BLACK;
3171                         break;
3172                 case GDK_w:
3173                 case GDK_W:
3174                         view->presentation_state =
3175                                 (view->presentation_state == EV_PRESENTATION_WHITE) ?
3176                                 EV_PRESENTATION_NORMAL : EV_PRESENTATION_WHITE;
3177                         break;
3178                 default:
3179                         if (view->presentation_state == EV_PRESENTATION_BLACK ||
3180                             view->presentation_state == EV_PRESENTATION_WHITE) {
3181                                 view->presentation_state = EV_PRESENTATION_NORMAL;
3182                         }
3183         }
3184
3185         if (current == view->presentation_state) {
3186                 if (ev_page_cache_get_n_pages (view->page_cache) > 1 &&
3187                     key_is_numeric (event->keyval)) {
3188                         gint x, y;
3189
3190                         ev_view_goto_window_create (view);
3191                         ev_view_goto_window_send_key_event (view, (GdkEvent *)event);
3192                         gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
3193                         gtk_window_move (GTK_WINDOW (view->goto_window), x, y);
3194                         gtk_widget_show (view->goto_window);
3195                         ev_view_goto_entry_grab_focus (view);
3196
3197                         return TRUE;
3198                 }
3199
3200                 return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
3201         }
3202
3203         switch (view->presentation_state) {
3204                 case EV_PRESENTATION_NORMAL:
3205                 case EV_PRESENTATION_BLACK:
3206                         gdk_window_set_background (view->layout.bin_window,
3207                                                    &widget->style->black);
3208                         break;
3209                 case EV_PRESENTATION_WHITE:
3210                         gdk_window_set_background (view->layout.bin_window,
3211                                                    &widget->style->white);
3212                         break;
3213                 default:
3214                         return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
3215         }
3216
3217         gtk_widget_queue_draw (widget);
3218         return TRUE;
3219 }
3220
3221 static gint
3222 ev_view_focus_in (GtkWidget     *widget,
3223                   GdkEventFocus *event)
3224 {
3225         if (EV_VIEW (widget)->pixbuf_cache)
3226                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
3227         gtk_widget_queue_draw (widget);
3228
3229         return FALSE;
3230 }
3231
3232 static gint
3233 ev_view_focus_out (GtkWidget     *widget,
3234                      GdkEventFocus *event)
3235 {
3236         if (EV_VIEW (widget)->goto_window)
3237                 ev_view_goto_window_hide (EV_VIEW (widget));
3238
3239         if (EV_VIEW (widget)->pixbuf_cache)
3240                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
3241         gtk_widget_queue_draw (widget);
3242
3243         return FALSE;
3244 }
3245
3246 static gboolean
3247 ev_view_leave_notify_event (GtkWidget *widget, GdkEventCrossing   *event)
3248 {
3249         EvView *view = EV_VIEW (widget);
3250
3251         ev_view_set_status (view, NULL);
3252
3253         if (view->cursor == EV_VIEW_CURSOR_LINK ||
3254             view->cursor == EV_VIEW_CURSOR_IBEAM)
3255                 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
3256
3257         if (view->link_tooltip) {
3258                 view->hovered_link = NULL;
3259                 ev_tooltip_deactivate (EV_TOOLTIP (view->link_tooltip));
3260         }
3261
3262         return FALSE;
3263 }
3264
3265 static gboolean
3266 ev_view_enter_notify_event (GtkWidget *widget, GdkEventCrossing   *event)
3267 {
3268         EvView *view = EV_VIEW (widget);
3269
3270         ev_view_handle_cursor_over_xy (view, event->x, event->y);
3271
3272         return FALSE;
3273 }
3274
3275 static void
3276 ev_view_style_set (GtkWidget *widget,
3277                    GtkStyle  *old_style)
3278 {
3279         if (EV_VIEW (widget)->pixbuf_cache)
3280                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
3281
3282         GTK_WIDGET_CLASS (ev_view_parent_class)->style_set (widget, old_style);
3283 }
3284
3285 /*** Drawing ***/
3286
3287 static guint32
3288 ev_gdk_color_to_rgb (const GdkColor *color)
3289 {
3290   guint32 result;
3291   result = (0xff0000 | (color->red & 0xff00));
3292   result <<= 8;
3293   result |= ((color->green & 0xff00) | (color->blue >> 8));
3294   return result;
3295 }
3296
3297 static void
3298 draw_rubberband (GtkWidget *widget, GdkWindow *window,
3299                  const GdkRectangle *rect, guchar alpha)
3300 {
3301         GdkGC *gc;
3302         GdkPixbuf *pixbuf;
3303         GdkColor *fill_color_gdk;
3304         guint fill_color;
3305
3306         fill_color_gdk = gdk_color_copy (&GTK_WIDGET (widget)->style->base[GTK_STATE_SELECTED]);
3307         fill_color = ev_gdk_color_to_rgb (fill_color_gdk) << 8 | alpha;
3308
3309         pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE, 8,
3310                                  rect->width, rect->height);
3311         gdk_pixbuf_fill (pixbuf, fill_color);
3312
3313         gdk_draw_pixbuf (window, NULL, pixbuf,
3314                          0, 0,
3315                          rect->x - EV_VIEW (widget)->scroll_x, rect->y - EV_VIEW (widget)->scroll_y,
3316                          rect->width, rect->height,
3317                          GDK_RGB_DITHER_NONE,
3318                          0, 0);
3319
3320         g_object_unref (pixbuf);
3321
3322         gc = gdk_gc_new (window);
3323         gdk_gc_set_rgb_fg_color (gc, fill_color_gdk);
3324         gdk_draw_rectangle (window, gc, FALSE,
3325                             rect->x - EV_VIEW (widget)->scroll_x, rect->y - EV_VIEW (widget)->scroll_y,
3326                             rect->width - 1,
3327                             rect->height - 1);
3328         g_object_unref (gc);
3329
3330         gdk_color_free (fill_color_gdk);
3331 }
3332
3333
3334 static void
3335 highlight_find_results (EvView *view, int page)
3336 {
3337         EvDocumentFind *find;
3338         int i, results = 0;
3339
3340         find = EV_DOCUMENT_FIND (view->document);
3341
3342         results = ev_document_find_get_n_results (find, page);
3343
3344         for (i = 0; i < results; i++) {
3345                 EvRectangle rectangle;
3346                 GdkRectangle view_rectangle;
3347                 guchar alpha;
3348
3349                 if (i == view->find_result && page == view->current_page) {
3350                         alpha = 0x90;
3351                 } else {
3352                         alpha = 0x20;
3353                 }
3354
3355                 ev_document_find_get_result (find, page, i, &rectangle);
3356                 doc_rect_to_view_rect (view, page, &rectangle, &view_rectangle);
3357                 draw_rubberband (GTK_WIDGET (view), view->layout.bin_window,
3358                                  &view_rectangle, alpha);
3359         }
3360 }
3361
3362 static void
3363 draw_loading_text (EvView       *view,
3364                    GdkRectangle *page_area,
3365                    GdkRectangle *expose_area)
3366 {
3367         cairo_t *cr;
3368         gint     width, height;
3369
3370         /* Don't annoy users with loading messages during presentations.
3371          * FIXME: Temporary "workaround" for
3372          * http://bugzilla.gnome.org/show_bug.cgi?id=320352 */
3373         if (view->presentation)
3374                 return;
3375
3376         if (!view->loading_text) {
3377                 const gchar *loading_text = _("Loading...");
3378                 PangoLayout *layout;
3379                 PangoFontDescription *font_desc;
3380                 PangoRectangle logical_rect;
3381                 gint target_width;
3382                 gdouble real_scale;
3383
3384                 ev_document_fc_mutex_lock ();
3385
3386                 layout = gtk_widget_create_pango_layout (GTK_WIDGET (view), loading_text);
3387
3388                 font_desc = pango_font_description_new ();
3389
3390                 /* We set the font to be 10 points, get the size, and scale appropriately */
3391                 pango_font_description_set_size (font_desc, 10 * PANGO_SCALE);
3392                 pango_layout_set_font_description (layout, font_desc);
3393                 pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
3394
3395                 target_width = MAX (page_area->width / 2, 1);
3396                 real_scale = ((double)target_width / (double) logical_rect.width) * (PANGO_SCALE * 10);
3397                 pango_font_description_set_size (font_desc, (int)real_scale);
3398                 pango_layout_set_font_description (layout, font_desc);
3399                 pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
3400
3401                 view->loading_text = cairo_image_surface_create (CAIRO_FORMAT_ARGB32,
3402                                                                  logical_rect.width,
3403                                                                  logical_rect.height);
3404                 cr = cairo_create (view->loading_text);
3405                 cairo_set_source_rgb (cr,
3406                                       155 / (double)255,
3407                                       155 / (double)255,
3408                                       155 / (double)255);
3409                 pango_cairo_show_layout (cr, layout);
3410                 cairo_destroy (cr);
3411
3412                 pango_font_description_free (font_desc);
3413                 g_object_unref (layout);
3414
3415                 ev_document_fc_mutex_unlock ();
3416         }
3417
3418         width = (page_area->width - cairo_image_surface_get_width (view->loading_text)) / 2;
3419         height = (page_area->height - cairo_image_surface_get_height (view->loading_text)) / 2;
3420
3421         cr = gdk_cairo_create (view->layout.bin_window);
3422         cairo_translate (cr,
3423                          page_area->x + width,
3424                          page_area->y + height);
3425         cairo_set_source_surface (cr, view->loading_text, 0, 0);
3426         cairo_paint (cr);
3427         cairo_destroy (cr);
3428 }
3429
3430 static void
3431 draw_one_page (EvView       *view,
3432                gint          page,
3433                GdkRectangle *page_area,
3434                GtkBorder    *border,
3435                GdkRectangle *expose_area,
3436                gboolean     *page_ready)
3437 {
3438         GdkRectangle overlap;
3439         GdkRectangle real_page_area;
3440
3441         g_assert (view->document);
3442
3443         if (! gdk_rectangle_intersect (page_area, expose_area, &overlap))
3444                 return;
3445
3446         /* Render the document itself */
3447         real_page_area = *page_area;
3448
3449         real_page_area.x += border->left;
3450         real_page_area.y += border->top;
3451         real_page_area.width -= (border->left + border->right);
3452         real_page_area.height -= (border->top + border->bottom);
3453         *page_ready = TRUE;
3454
3455         if (!view->presentation) {
3456                 gint current_page;
3457
3458                 current_page = ev_page_cache_get_current_page (view->page_cache);
3459                 ev_document_misc_paint_one_page (view->layout.bin_window,
3460                                                  GTK_WIDGET (view),
3461                                                  page_area, border,
3462                                                  page == current_page);
3463         }
3464
3465         if (gdk_rectangle_intersect (&real_page_area, expose_area, &overlap)) {
3466                 gint             width, height;
3467                 gint             page_width, page_height;
3468                 cairo_surface_t *page_surface = NULL;
3469                 gint             selection_width, selection_height;
3470                 cairo_surface_t *selection_surface = NULL;
3471                 cairo_t         *cr = NULL;
3472
3473                 page_surface = ev_pixbuf_cache_get_surface (view->pixbuf_cache, page);
3474
3475                 if (!page_surface) {
3476                         draw_loading_text (view,
3477                                            &real_page_area,
3478                                            expose_area);
3479                         *page_ready = FALSE;
3480
3481                         return;
3482                 }
3483
3484                 ev_page_cache_get_size (view->page_cache,
3485                                         page, view->rotation,
3486                                         view->scale,
3487                                         &width, &height);
3488
3489                 cr = gdk_cairo_create (view->layout.bin_window);
3490
3491                 cairo_save (cr);
3492
3493                 page_width = cairo_image_surface_get_width (page_surface);
3494                 page_height = cairo_image_surface_get_height (page_surface);
3495
3496                 cairo_rectangle (cr, overlap.x, overlap.y, overlap.width, overlap.height);
3497                 cairo_clip (cr);
3498
3499                 cairo_translate (cr, overlap.x, overlap.y);
3500
3501                 if (width != page_width || height != page_height) {
3502                         cairo_pattern_set_filter (cairo_get_source (cr),
3503                                                   CAIRO_FILTER_FAST);
3504                         cairo_scale (cr,
3505                                      (gdouble)width / page_width,
3506                                      (gdouble)height / page_height);
3507                 }
3508
3509                 cairo_surface_set_device_offset (page_surface,
3510                                                  overlap.x - real_page_area.x,
3511                                                  overlap.y - real_page_area.y);
3512
3513                 cairo_set_source_surface (cr, page_surface, 0, 0);
3514                 cairo_paint (cr);
3515
3516                 cairo_restore (cr);
3517
3518                 /* Get the selection pixbuf iff we have something to draw */
3519                 if (find_selection_for_page (view, page) &&
3520                     view->selection_mode == EV_VIEW_SELECTION_TEXT) {
3521                         selection_surface =
3522                                 ev_pixbuf_cache_get_selection_surface (view->pixbuf_cache,
3523                                                                        page,
3524                                                                        view->scale,
3525                                                                        NULL);
3526                 }
3527
3528                 if (!selection_surface) {
3529                         cairo_destroy (cr);
3530                         return;
3531                 }
3532
3533                 selection_width = cairo_image_surface_get_width (selection_surface);
3534                 selection_height = cairo_image_surface_get_height (selection_surface);
3535
3536                 cairo_rectangle (cr, overlap.x, overlap.y, overlap.width, overlap.height);
3537                 cairo_clip (cr);
3538
3539                 cairo_translate (cr, overlap.x, overlap.y);
3540
3541                 if (width != selection_width || height != selection_height) {
3542                         cairo_pattern_set_filter (cairo_get_source (cr),
3543                                                   CAIRO_FILTER_FAST);
3544                         cairo_scale (cr,
3545                                      (gdouble)width / selection_width,
3546                                      (gdouble)height / selection_height);
3547                 }
3548
3549                 cairo_surface_set_device_offset (selection_surface,
3550                                                  overlap.x - real_page_area.x,
3551                                                  overlap.y - real_page_area.y);
3552
3553                 cairo_set_source_surface (cr, selection_surface, 0, 0);
3554                 cairo_paint (cr);
3555                 cairo_destroy (cr);
3556         }
3557 }
3558
3559 /*** GObject functions ***/
3560
3561 static void
3562 ev_view_finalize (GObject *object)
3563 {
3564         EvView *view = EV_VIEW (object);
3565
3566         g_free (view->status);
3567         g_free (view->find_status);
3568
3569         clear_selection (view);
3570
3571         if (view->image_dnd_info.image)
3572                 g_object_unref (view->image_dnd_info.image);
3573         view->image_dnd_info.image = NULL;
3574
3575         G_OBJECT_CLASS (ev_view_parent_class)->finalize (object);
3576 }
3577
3578 static void
3579 ev_view_destroy (GtkObject *object)
3580 {
3581         EvView *view = EV_VIEW (object);
3582
3583         if (view->document) {
3584                 g_object_unref (view->document);
3585                 view->document = NULL;
3586         }
3587
3588         if (view->pixbuf_cache) {
3589                 g_object_unref (view->pixbuf_cache);
3590                 view->pixbuf_cache = NULL;
3591         }
3592
3593         if (view->link_tooltip) {
3594                 gtk_widget_destroy (view->link_tooltip);
3595                 view->link_tooltip = NULL;
3596         }
3597
3598         if (view->goto_window) {
3599                 gtk_widget_destroy (view->goto_window);
3600                 view->goto_window = NULL;
3601                 view->goto_entry = NULL;
3602         }
3603
3604         if (view->selection_scroll_id) {
3605             g_source_remove (view->selection_scroll_id);
3606             view->selection_scroll_id = 0;
3607         }
3608
3609         if (view->selection_update_id) {
3610             g_source_remove (view->selection_update_id);
3611             view->selection_update_id = 0;
3612         }
3613
3614         if (view->loading_text) {
3615                 cairo_surface_destroy (view->loading_text);
3616                 view->loading_text = NULL;
3617         }
3618
3619         ev_view_presentation_transition_stop (view);
3620
3621         ev_view_set_scroll_adjustments (GTK_LAYOUT (view), NULL, NULL);
3622
3623         GTK_OBJECT_CLASS (ev_view_parent_class)->destroy (object);
3624 }
3625
3626 static void
3627 ev_view_set_property (GObject      *object,
3628                       guint         prop_id,
3629                       const GValue *value,
3630                       GParamSpec   *pspec)
3631 {
3632         EvView *view = EV_VIEW (object);
3633
3634         switch (prop_id) {
3635                 case PROP_CONTINUOUS:
3636                         ev_view_set_continuous (view, g_value_get_boolean (value));
3637                         break;
3638                 case PROP_DUAL_PAGE:
3639                         ev_view_set_dual_page (view, g_value_get_boolean (value));
3640                         break;
3641                 case PROP_FULLSCREEN:
3642                         ev_view_set_fullscreen (view, g_value_get_boolean (value));
3643                         break;
3644                 case PROP_PRESENTATION:
3645                         ev_view_set_presentation (view, g_value_get_boolean (value));
3646                         break;
3647                 case PROP_SIZING_MODE:
3648                         ev_view_set_sizing_mode (view, g_value_get_enum (value));
3649                         break;
3650                 case PROP_ZOOM:
3651                         ev_view_set_zoom (view, g_value_get_double (value), FALSE);
3652                         break;
3653                 case PROP_ROTATION:
3654                         ev_view_set_rotation (view, g_value_get_int (value));
3655                         break;
3656                 default:
3657                         G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
3658         }
3659 }
3660
3661 static AtkObject *
3662 ev_view_get_accessible (GtkWidget *widget)
3663 {
3664         static gboolean first_time = TRUE;
3665
3666         if (first_time) {
3667                 AtkObjectFactory *factory;
3668                 AtkRegistry *registry;
3669                 GType derived_type;
3670                 GType derived_atk_type;
3671
3672                 /*
3673                  * Figure out whether accessibility is enabled by looking at the
3674                  * type of the accessible object which would be created for
3675                  * the parent type of EvView.
3676                  */
3677                 derived_type = g_type_parent (EV_TYPE_VIEW);
3678
3679                 registry = atk_get_default_registry ();
3680                 factory = atk_registry_get_factory (registry,
3681                                                     derived_type);
3682                 derived_atk_type = atk_object_factory_get_accessible_type (factory);
3683                 if (g_type_is_a (derived_atk_type, GTK_TYPE_ACCESSIBLE))
3684                         atk_registry_set_factory_type (registry,
3685                                                        EV_TYPE_VIEW,
3686                                                        ev_view_accessible_factory_get_type ());
3687                 first_time = FALSE;
3688         }
3689         return GTK_WIDGET_CLASS (ev_view_parent_class)->get_accessible (widget);
3690 }
3691
3692 static void
3693 ev_view_get_property (GObject *object,
3694                       guint prop_id,
3695                       GValue *value,
3696                       GParamSpec *pspec)
3697 {
3698         EvView *view = EV_VIEW (object);
3699
3700         switch (prop_id) {
3701                 case PROP_STATUS:
3702                         g_value_set_string (value, view->status);
3703                         break;
3704                 case PROP_FIND_STATUS:
3705                         g_value_set_string (value, view->status);
3706                         break;
3707                 case PROP_CONTINUOUS:
3708                         g_value_set_boolean (value, view->continuous);
3709                         break;
3710                 case PROP_DUAL_PAGE:
3711                         g_value_set_boolean (value, view->dual_page);
3712                         break;
3713                 case PROP_FULLSCREEN:
3714                         g_value_set_boolean (value, view->fullscreen);
3715                         break;
3716                 case PROP_PRESENTATION:
3717                         g_value_set_boolean (value, view->presentation);
3718                         break;
3719                 case PROP_SIZING_MODE:
3720                         g_value_set_enum (value, view->sizing_mode);
3721                         break;
3722                 case PROP_ZOOM:
3723                         g_value_set_double (value, view->scale);
3724                         break;
3725                 case PROP_ROTATION:
3726                         g_value_set_int (value, view->rotation);
3727                         break;
3728                 case PROP_HAS_SELECTION:
3729                         g_value_set_boolean (value,
3730                                              view->selection_info.selections != NULL);
3731                         break;
3732                 default:
3733                         G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
3734         }
3735 }
3736
3737 static void
3738 ev_view_class_init (EvViewClass *class)
3739 {
3740         GObjectClass *object_class = G_OBJECT_CLASS (class);
3741         GtkObjectClass *gtk_object_class = GTK_OBJECT_CLASS (class);
3742         GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
3743         GtkLayoutClass *layout_class = GTK_LAYOUT_CLASS (class);
3744         GtkBindingSet *binding_set;
3745
3746         object_class->finalize = ev_view_finalize;
3747         object_class->set_property = ev_view_set_property;
3748         object_class->get_property = ev_view_get_property;
3749
3750         widget_class->expose_event = ev_view_expose_event;
3751         widget_class->button_press_event = ev_view_button_press_event;
3752         widget_class->motion_notify_event = ev_view_motion_notify_event;
3753         widget_class->button_release_event = ev_view_button_release_event;
3754         widget_class->key_press_event = ev_view_key_press_event;
3755         widget_class->focus_in_event = ev_view_focus_in;
3756         widget_class->focus_out_event = ev_view_focus_out;
3757         widget_class->get_accessible = ev_view_get_accessible;
3758         widget_class->size_request = ev_view_size_request;
3759         widget_class->size_allocate = ev_view_size_allocate;
3760         widget_class->realize = ev_view_realize;
3761         widget_class->scroll_event = ev_view_scroll_event;
3762         widget_class->enter_notify_event = ev_view_enter_notify_event;
3763         widget_class->leave_notify_event = ev_view_leave_notify_event;
3764         widget_class->style_set = ev_view_style_set;
3765         widget_class->drag_data_get = ev_view_drag_data_get;
3766         widget_class->drag_motion = ev_view_drag_motion;
3767         widget_class->drag_data_received = ev_view_drag_data_received;
3768         widget_class->popup_menu = ev_view_popup_menu;
3769
3770         gtk_object_class->destroy = ev_view_destroy;
3771
3772         layout_class->set_scroll_adjustments = ev_view_set_scroll_adjustments;
3773
3774         class->binding_activated = ev_view_scroll;
3775
3776         signals[SIGNAL_BINDING_ACTIVATED] = g_signal_new ("binding_activated",
3777                          G_TYPE_FROM_CLASS (object_class),
3778                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
3779                          G_STRUCT_OFFSET (EvViewClass, binding_activated),
3780                          NULL, NULL,
3781                          ev_marshal_VOID__ENUM_BOOLEAN,
3782                          G_TYPE_NONE, 2,
3783                          GTK_TYPE_SCROLL_TYPE,
3784                          G_TYPE_BOOLEAN);
3785
3786         signals[SIGNAL_ZOOM_INVALID] = g_signal_new ("zoom-invalid",
3787                          G_TYPE_FROM_CLASS (object_class),
3788                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
3789                          G_STRUCT_OFFSET (EvViewClass, zoom_invalid),
3790                          NULL, NULL,
3791                          ev_marshal_VOID__VOID,
3792                          G_TYPE_NONE, 0, G_TYPE_NONE);
3793         signals[SIGNAL_HANDLE_LINK] = g_signal_new ("handle-link",
3794                          G_TYPE_FROM_CLASS (object_class),
3795                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
3796                          G_STRUCT_OFFSET (EvViewClass, handle_link),
3797                          NULL, NULL,
3798                          g_cclosure_marshal_VOID__OBJECT,
3799                          G_TYPE_NONE, 1,
3800                          G_TYPE_OBJECT);
3801         signals[SIGNAL_EXTERNAL_LINK] = g_signal_new ("external-link",
3802                          G_TYPE_FROM_CLASS (object_class),
3803                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
3804                          G_STRUCT_OFFSET (EvViewClass, external_link),
3805                          NULL, NULL,
3806                          g_cclosure_marshal_VOID__OBJECT,
3807                          G_TYPE_NONE, 1,
3808                          G_TYPE_OBJECT);
3809         signals[SIGNAL_POPUP_MENU] = g_signal_new ("popup",
3810                          G_TYPE_FROM_CLASS (object_class),
3811                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
3812                          G_STRUCT_OFFSET (EvViewClass, popup_menu),
3813                          NULL, NULL,
3814                          g_cclosure_marshal_VOID__OBJECT,
3815                          G_TYPE_NONE, 1,
3816                          G_TYPE_OBJECT);
3817
3818         g_object_class_install_property (object_class,
3819                                          PROP_STATUS,
3820                                          g_param_spec_string ("status",
3821                                                               "Status Message",
3822                                                               "The status message",
3823                                                               NULL,
3824                                                               G_PARAM_READABLE));
3825
3826         g_object_class_install_property (object_class,
3827                                          PROP_FIND_STATUS,
3828                                          g_param_spec_string ("find-status",
3829                                                               "Find Status Message",
3830                                                               "The find status message",
3831                                                               NULL,
3832                                                               G_PARAM_READABLE));
3833
3834         g_object_class_install_property (object_class,
3835                                          PROP_CONTINUOUS,
3836                                          g_param_spec_boolean ("continuous",
3837                                                                "Continuous",
3838                                                                "Continuous scrolling mode",
3839                                                                TRUE,
3840                                                                G_PARAM_READWRITE));
3841
3842         g_object_class_install_property (object_class,
3843                                          PROP_DUAL_PAGE,
3844                                          g_param_spec_boolean ("dual-page",
3845                                                                "Dual Page",
3846                                                                "Two pages visible at once",
3847                                                                FALSE,
3848                                                                G_PARAM_READWRITE));
3849         g_object_class_install_property (object_class,
3850                                          PROP_FULLSCREEN,
3851                                          g_param_spec_boolean ("fullscreen",
3852                                                                "Full Screen",
3853                                                                "Draw page in a fullscreen fashion",
3854                                                                FALSE,
3855                                                                G_PARAM_READWRITE));
3856         g_object_class_install_property (object_class,
3857                                          PROP_PRESENTATION,
3858                                          g_param_spec_boolean ("presentation",
3859                                                                "Presentation",
3860                                                                "Draw page in presentation mode",
3861                                                                TRUE,
3862                                                                G_PARAM_READWRITE));
3863
3864         g_object_class_install_property (object_class,
3865                                          PROP_SIZING_MODE,
3866                                          g_param_spec_enum ("sizing-mode",
3867                                                             "Sizing Mode",
3868                                                             "Sizing Mode",
3869                                                             EV_TYPE_SIZING_MODE,
3870                                                             EV_SIZING_FIT_WIDTH,
3871                                                             G_PARAM_READWRITE));
3872
3873         g_object_class_install_property (object_class,
3874                                          PROP_ZOOM,
3875                                          g_param_spec_double ("zoom",
3876                                                               "Zoom factor",
3877                                                               "Zoom factor",
3878                                                               0,
3879                                                               G_MAXDOUBLE,
3880                                                               1.0,
3881                                                               G_PARAM_READWRITE));
3882         g_object_class_install_property (object_class,
3883                                          PROP_ROTATION,
3884                                          g_param_spec_double ("rotation",
3885                                                               "Rotation",
3886                                                               "Rotation",
3887                                                               0,
3888                                                               360,
3889                                                               0,
3890                                                               G_PARAM_READWRITE));
3891         g_object_class_install_property (object_class,
3892                                          PROP_HAS_SELECTION,
3893                                          g_param_spec_boolean ("has-selection",
3894                                                                "Has selection",
3895                                                                "The view has selections",
3896                                                                FALSE,
3897                                                                G_PARAM_READABLE));
3898
3899         binding_set = gtk_binding_set_by_class (class);
3900
3901         add_scroll_binding_keypad (binding_set, GDK_Left,  0, EV_SCROLL_STEP_BACKWARD, TRUE);
3902         add_scroll_binding_keypad (binding_set, GDK_Right, 0, EV_SCROLL_STEP_FORWARD,  TRUE);
3903         add_scroll_binding_keypad (binding_set, GDK_Left,  GDK_MOD1_MASK, EV_SCROLL_STEP_DOWN, TRUE);
3904         add_scroll_binding_keypad (binding_set, GDK_Right, GDK_MOD1_MASK, EV_SCROLL_STEP_UP,  TRUE);
3905         add_scroll_binding_keypad (binding_set, GDK_Up,    0, EV_SCROLL_STEP_BACKWARD, FALSE);
3906         add_scroll_binding_keypad (binding_set, GDK_Down,  0, EV_SCROLL_STEP_FORWARD,  FALSE);
3907         add_scroll_binding_keypad (binding_set, GDK_Up,    GDK_MOD1_MASK, EV_SCROLL_STEP_DOWN, FALSE);
3908         add_scroll_binding_keypad (binding_set, GDK_Down,  GDK_MOD1_MASK, EV_SCROLL_STEP_UP,  FALSE);
3909 }
3910
3911 static void
3912 ev_view_init (EvView *view)
3913 {
3914         GTK_WIDGET_SET_FLAGS (view, GTK_CAN_FOCUS);
3915
3916         view->spacing = 5;
3917         view->scale = 1.0;
3918         view->current_page = 0;
3919         view->pressed_button = -1;
3920         view->cursor = EV_VIEW_CURSOR_NORMAL;
3921         view->drag_info.in_drag = FALSE;
3922         view->selection_info.selections = NULL;
3923         view->selection_info.in_selection = FALSE;
3924         view->selection_info.in_drag = FALSE;
3925         view->selection_mode = EV_VIEW_SELECTION_TEXT;
3926         view->continuous = TRUE;
3927         view->dual_page = FALSE;
3928         view->presentation = FALSE;
3929         view->presentation_state = EV_PRESENTATION_NORMAL;
3930         view->fullscreen = FALSE;
3931         view->sizing_mode = EV_SIZING_FIT_WIDTH;
3932         view->pending_scroll = SCROLL_TO_KEEP_POSITION;
3933         view->jump_to_find_result = TRUE;
3934
3935         gtk_layout_set_hadjustment (GTK_LAYOUT (view), NULL);
3936         gtk_layout_set_vadjustment (GTK_LAYOUT (view), NULL);
3937
3938         gtk_drag_dest_set (GTK_WIDGET (view),
3939                            GTK_DEST_DEFAULT_ALL,
3940                            view_drop_targets,
3941                            G_N_ELEMENTS (view_drop_targets),
3942                            GDK_ACTION_COPY);
3943 }
3944
3945 /*** Callbacks ***/
3946
3947 static void
3948 find_changed_cb (EvDocument *document, int page, EvView *view)
3949 {
3950         double percent;
3951         int n_pages;
3952
3953         percent = ev_document_find_get_progress
3954                         (EV_DOCUMENT_FIND (view->document));
3955         n_pages = ev_page_cache_get_n_pages (view->page_cache);
3956
3957         if (view->jump_to_find_result == TRUE) {
3958                 jump_to_find_page (view, EV_VIEW_FIND_NEXT, 0);
3959                 jump_to_find_result (view);
3960         }
3961         update_find_status_message (view, percent * n_pages >= n_pages - 1 );
3962         if (view->current_page == page)
3963                 gtk_widget_queue_draw (GTK_WIDGET (view));
3964 }
3965
3966 static void
3967 job_finished_cb (EvPixbufCache *pixbuf_cache,
3968                  GdkRegion     *region,
3969                  EvView        *view)
3970 {
3971         if (region) {
3972                 gdk_window_invalidate_region (view->layout.bin_window,
3973                                               region, TRUE);
3974         } else {
3975                 gtk_widget_queue_draw (GTK_WIDGET (view));
3976         }
3977 }
3978
3979 static void
3980 page_changed_cb (EvPageCache *page_cache,
3981                  int          new_page,
3982                  EvView      *view)
3983 {
3984         if (view->current_page != new_page) {
3985                 gint x, y;
3986
3987                 view->current_page = new_page;
3988                 view->pending_scroll = SCROLL_TO_PAGE_POSITION;
3989
3990                 if (view->presentation)
3991                         ev_view_presentation_transition_start (view);
3992
3993                 gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
3994                 ev_view_handle_cursor_over_xy (view, x, y);
3995
3996                 gtk_widget_queue_resize (GTK_WIDGET (view));
3997         } else {
3998                 gtk_widget_queue_draw (GTK_WIDGET (view));
3999         }
4000
4001         if (EV_IS_DOCUMENT_FIND (view->document)) {
4002                 view->find_result = 0;
4003                 update_find_status_message (view, TRUE);
4004         }
4005 }
4006
4007 static void
4008 on_adjustment_value_changed (GtkAdjustment *adjustment,
4009                              EvView        *view)
4010 {
4011         int dx = 0, dy = 0;
4012         gint x, y;
4013         GList *children, *l;
4014
4015         if (! GTK_WIDGET_REALIZED (view))
4016                 return;
4017
4018         if (view->hadjustment) {
4019                 dx = view->scroll_x - (int) view->hadjustment->value;
4020                 view->scroll_x = (int) view->hadjustment->value;
4021         } else {
4022                 view->scroll_x = 0;
4023         }
4024
4025         if (view->vadjustment) {
4026                 dy = view->scroll_y - (int) view->vadjustment->value;
4027                 view->scroll_y = (int) view->vadjustment->value;
4028         } else {
4029                 view->scroll_y = 0;
4030         }
4031
4032         children = gtk_container_get_children (GTK_CONTAINER (view));
4033         for (l = children; l && l->data; l = g_list_next (l)) {
4034                 gint       child_x, child_y;
4035                 GtkWidget *child = (GtkWidget *)l->data;
4036
4037                 gtk_container_child_get (GTK_CONTAINER (view),
4038                                          child,
4039                                          "x", &child_x,
4040                                          "y", &child_y,
4041                                          NULL);
4042                 gtk_layout_move (GTK_LAYOUT (view), child, child_x + dx, child_y + dy);
4043         }
4044         g_list_free (children);
4045
4046         if (view->pending_resize)
4047                 gtk_widget_queue_draw (GTK_WIDGET (view));
4048         else
4049                 gdk_window_scroll (view->layout.bin_window, dx, dy);
4050
4051         gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
4052         ev_view_handle_cursor_over_xy (view, x, y);
4053
4054         if (view->document)
4055                 view_update_range_and_current_page (view);
4056 }
4057
4058 GtkWidget*
4059 ev_view_new (void)
4060 {
4061         GtkWidget *view;
4062
4063         view = g_object_new (EV_TYPE_VIEW, NULL);
4064
4065         return view;
4066 }
4067
4068 static void
4069 setup_caches (EvView *view)
4070 {
4071         view->page_cache = ev_page_cache_get (view->document);
4072         g_signal_connect (view->page_cache, "page-changed", G_CALLBACK (page_changed_cb), view);
4073         view->pixbuf_cache = ev_pixbuf_cache_new (GTK_WIDGET (view), view->document);
4074         g_signal_connect (view->pixbuf_cache, "job-finished", G_CALLBACK (job_finished_cb), view);
4075         page_changed_cb (view->page_cache,
4076                          ev_page_cache_get_current_page (view->page_cache),
4077                          view);
4078 }
4079
4080 static void
4081 clear_caches (EvView *view)
4082 {
4083         if (view->pixbuf_cache) {
4084                 g_object_unref (view->pixbuf_cache);
4085                 view->pixbuf_cache = NULL;
4086         }
4087
4088         if (view->page_cache) {
4089                 view->page_cache = NULL;
4090         }
4091 }
4092
4093 void
4094 ev_view_set_loading (EvView       *view,
4095                      gboolean      loading)
4096 {
4097         view->loading = loading;
4098         gtk_widget_queue_draw (GTK_WIDGET (view));
4099 }
4100
4101 void
4102 ev_view_set_document (EvView     *view,
4103                       EvDocument *document)
4104 {
4105         g_return_if_fail (EV_IS_VIEW (view));
4106
4107         view->loading = FALSE;
4108
4109         if (document != view->document) {
4110                 clear_caches (view);
4111
4112                 if (view->document) {
4113                         g_signal_handlers_disconnect_by_func (view->document,
4114                                                               find_changed_cb,
4115                                                               view);
4116                         g_object_unref (view->document);
4117                         view->page_cache = NULL;
4118
4119                 }
4120
4121                 view->document = document;
4122                 view->find_result = 0;
4123
4124                 if (view->document) {
4125                         g_object_ref (view->document);
4126                         if (EV_IS_DOCUMENT_FIND (view->document)) {
4127                                 g_signal_connect (view->document,
4128                                                   "find_changed",
4129                                                   G_CALLBACK (find_changed_cb),
4130                                                   view);
4131                         }
4132
4133                         setup_caches (view);
4134                 }
4135
4136                 gtk_widget_queue_resize (GTK_WIDGET (view));
4137         }
4138 }
4139
4140 /*** Zoom and sizing mode ***/
4141
4142 #define EPSILON 0.0000001
4143 void
4144 ev_view_set_zoom (EvView   *view,
4145                   double    factor,
4146                   gboolean  relative)
4147 {
4148         double scale;
4149
4150         if (relative)
4151                 scale = view->scale * factor;
4152         else
4153                 scale = factor;
4154
4155         scale = CLAMP (scale, view->min_scale, view->max_scale);
4156
4157         if (ABS (view->scale - scale) < EPSILON)
4158                 return;
4159
4160         if (view->loading_text) {
4161                 cairo_surface_destroy (view->loading_text);
4162                 view->loading_text = NULL;
4163         }
4164
4165         view->scale = scale;
4166         view->pending_resize = TRUE;
4167
4168         gtk_widget_queue_resize (GTK_WIDGET (view));
4169
4170         g_object_notify (G_OBJECT (view), "zoom");
4171 }
4172
4173 double
4174 ev_view_get_zoom (EvView *view)
4175 {
4176         return view->scale;
4177 }
4178
4179 void
4180 ev_view_set_screen_dpi (EvView  *view,
4181                         gdouble  dpi)
4182 {
4183         g_return_if_fail (EV_IS_VIEW (view));
4184         g_return_if_fail (dpi > 0);
4185
4186         view->dpi = dpi;
4187         view->min_scale = MIN_SCALE * dpi / 72.0;
4188         view->max_scale = MAX_SCALE * dpi / 72.0;
4189 }
4190
4191 gboolean
4192 ev_view_get_continuous (EvView *view)
4193 {
4194         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
4195
4196         return view->continuous;
4197 }
4198
4199 void
4200 ev_view_set_continuous (EvView   *view,
4201                         gboolean  continuous)
4202 {
4203         g_return_if_fail (EV_IS_VIEW (view));
4204
4205         continuous = continuous != FALSE;
4206
4207         if (view->continuous != continuous) {
4208                 view->continuous = continuous;
4209                 view->pending_scroll = SCROLL_TO_PAGE_POSITION;
4210                 gtk_widget_queue_resize (GTK_WIDGET (view));
4211         }
4212
4213         g_object_notify (G_OBJECT (view), "continuous");
4214 }
4215
4216 gboolean
4217 ev_view_get_dual_page (EvView *view)
4218 {
4219         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
4220
4221         return view->dual_page;
4222 }
4223
4224 void
4225 ev_view_set_dual_page (EvView   *view,
4226                        gboolean  dual_page)
4227 {
4228         g_return_if_fail (EV_IS_VIEW (view));
4229
4230         dual_page = dual_page != FALSE;
4231
4232         if (view->dual_page == dual_page)
4233                 return;
4234
4235         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
4236         view->dual_page = dual_page;
4237         /* FIXME: if we're keeping the pixbuf cache around, we should extend the
4238          * preload_cache_size to be 2 if dual_page is set.
4239          */
4240         gtk_widget_queue_resize (GTK_WIDGET (view));
4241
4242         g_object_notify (G_OBJECT (view), "dual-page");
4243 }
4244
4245 void
4246 ev_view_set_fullscreen (EvView   *view,
4247                          gboolean  fullscreen)
4248 {
4249         g_return_if_fail (EV_IS_VIEW (view));
4250
4251         fullscreen = fullscreen != FALSE;
4252
4253         if (view->fullscreen == fullscreen)
4254                 return;
4255
4256         view->fullscreen = fullscreen;
4257         gtk_widget_queue_resize (GTK_WIDGET (view));
4258
4259         g_object_notify (G_OBJECT (view), "fullscreen");
4260 }
4261
4262 gboolean
4263 ev_view_get_fullscreen (EvView *view)
4264 {
4265         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
4266
4267         return view->fullscreen;
4268 }
4269
4270 void
4271 ev_view_set_presentation (EvView   *view,
4272                           gboolean  presentation)
4273 {
4274         g_return_if_fail (EV_IS_VIEW (view));
4275
4276         presentation = presentation != FALSE;
4277
4278         if (view->presentation == presentation)
4279                 return;
4280
4281         if (!presentation)
4282                 view->presentation_state = EV_PRESENTATION_NORMAL;
4283
4284         view->presentation = presentation;
4285         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
4286
4287         if (presentation) {
4288                 view->sizing_mode_saved = view->sizing_mode;
4289                 view->scale_saved = view->scale;
4290                 ev_view_set_sizing_mode (view, EV_SIZING_BEST_FIT);
4291         } else {
4292                 ev_view_set_sizing_mode (view, view->sizing_mode_saved);
4293                 ev_view_set_zoom (view, view->scale_saved, FALSE);
4294         }
4295
4296         gtk_widget_queue_resize (GTK_WIDGET (view));
4297
4298         if (presentation)
4299                 ev_view_presentation_transition_start (view);
4300         else
4301                 ev_view_presentation_transition_stop (view);
4302
4303         if (GTK_WIDGET_REALIZED (view)) {
4304                 if (view->presentation)
4305                         gdk_window_set_background (view->layout.bin_window,
4306                                                    &GTK_WIDGET (view)->style->black);
4307                 else
4308                         gdk_window_set_background (view->layout.bin_window,
4309                                                    &GTK_WIDGET (view)->style->mid [GTK_STATE_NORMAL]);
4310         }
4311
4312         g_object_notify (G_OBJECT (view), "presentation");
4313 }
4314
4315 gboolean
4316 ev_view_get_presentation (EvView *view)
4317 {
4318         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
4319
4320         return view->presentation;
4321 }
4322
4323 static gboolean
4324 transition_next_page (EvView *view)
4325 {
4326         ev_view_next_page (view);
4327
4328         return FALSE;
4329 }
4330
4331 static void
4332 ev_view_presentation_transition_stop (EvView *view)
4333 {
4334         if (view->trans_timeout_id > 0)
4335                 g_source_remove (view->trans_timeout_id);
4336         view->trans_timeout_id = 0;
4337 }
4338
4339 static void
4340 ev_view_presentation_transition_start (EvView *view)
4341 {
4342         gdouble duration;
4343
4344         if (!EV_IS_DOCUMENT_TRANSITION (view->document))
4345                 return;
4346
4347         ev_view_presentation_transition_stop (view);
4348
4349         duration = ev_document_transition_get_page_duration (EV_DOCUMENT_TRANSITION (view->document),
4350                                                              view->current_page);
4351         if (duration > 0)
4352                 view->trans_timeout_id = g_timeout_add (duration * 1000,
4353                                                         (GSourceFunc) transition_next_page,
4354                                                         view);
4355 }
4356
4357 void
4358 ev_view_set_sizing_mode (EvView       *view,
4359                          EvSizingMode  sizing_mode)
4360 {
4361         g_return_if_fail (EV_IS_VIEW (view));
4362
4363         if (view->sizing_mode == sizing_mode)
4364                 return;
4365
4366         view->sizing_mode = sizing_mode;
4367         gtk_widget_queue_resize (GTK_WIDGET (view));
4368
4369         g_object_notify (G_OBJECT (view), "sizing-mode");
4370 }
4371
4372 EvSizingMode
4373 ev_view_get_sizing_mode (EvView *view)
4374 {
4375         g_return_val_if_fail (EV_IS_VIEW (view), EV_SIZING_FREE);
4376
4377         return view->sizing_mode;
4378 }
4379
4380 gboolean
4381 ev_view_can_zoom_in (EvView *view)
4382 {
4383         return view->scale * ZOOM_IN_FACTOR <= view->max_scale;
4384 }
4385
4386 gboolean
4387 ev_view_can_zoom_out (EvView *view)
4388 {
4389         return view->scale * ZOOM_OUT_FACTOR >= view->min_scale;
4390 }
4391
4392 void
4393 ev_view_zoom_in (EvView *view)
4394 {
4395         g_return_if_fail (view->sizing_mode == EV_SIZING_FREE);
4396
4397         if (view->presentation)
4398                 return;
4399
4400         view->pending_scroll = SCROLL_TO_CENTER;
4401         ev_view_set_zoom (view, ZOOM_IN_FACTOR, TRUE);
4402 }
4403
4404 void
4405 ev_view_zoom_out (EvView *view)
4406 {
4407         g_return_if_fail (view->sizing_mode == EV_SIZING_FREE);
4408
4409         if (view->presentation)
4410                 return;
4411
4412         view->pending_scroll = SCROLL_TO_CENTER;
4413         ev_view_set_zoom (view, ZOOM_OUT_FACTOR, TRUE);
4414 }
4415
4416 void
4417 ev_view_rotate_right (EvView *view)
4418 {
4419         int rotation = view->rotation + 90;
4420
4421         if (rotation >= 360) {
4422                 rotation -= 360;
4423         }
4424
4425         ev_view_set_rotation (view, rotation);
4426 }
4427
4428 void
4429 ev_view_rotate_left (EvView *view)
4430 {
4431         int rotation = view->rotation - 90;
4432
4433         if (rotation < 0) {
4434                 rotation += 360;
4435         }
4436
4437         ev_view_set_rotation (view, rotation);
4438 }
4439
4440 void
4441 ev_view_set_rotation (EvView *view, int rotation)
4442 {
4443         view->rotation = rotation;
4444
4445         if (view->pixbuf_cache) {
4446                 ev_pixbuf_cache_clear (view->pixbuf_cache);
4447                 gtk_widget_queue_resize (GTK_WIDGET (view));
4448         }
4449
4450         if (rotation != 0)
4451                 clear_selection (view);
4452
4453         g_object_notify (G_OBJECT (view), "rotation");
4454 }
4455
4456 int
4457 ev_view_get_rotation (EvView *view)
4458 {
4459         return view->rotation;
4460 }
4461
4462 static double
4463 zoom_for_size_fit_width (int doc_width,
4464                          int doc_height,
4465                          int target_width,
4466                          int target_height,
4467                          int vsb_width)
4468 {
4469         double scale;
4470
4471         scale = (double)target_width / doc_width;
4472
4473         if (doc_height * scale > target_height)
4474                 scale = (double) (target_width - vsb_width) / doc_width;
4475
4476         return scale;
4477 }
4478
4479 static double
4480 zoom_for_size_fit_height (int doc_width,
4481                           int doc_height,
4482                           int target_width,
4483                           int target_height,
4484                           int vsb_height)
4485 {
4486         double scale;
4487
4488         scale = (double)target_height / doc_height;
4489
4490         if (doc_width * scale > target_width)
4491                 scale = (double) (target_height - vsb_height) / doc_height;
4492
4493         return scale;
4494 }
4495
4496 static double
4497 zoom_for_size_best_fit (int doc_width,
4498                         int doc_height,
4499                         int target_width,
4500                         int target_height,
4501                         int vsb_width,
4502                         int hsb_width)
4503 {
4504         double w_scale;
4505         double h_scale;
4506
4507         w_scale = (double)target_width / doc_width;
4508         h_scale = (double)target_height / doc_height;
4509
4510         if (doc_height * w_scale > target_height)
4511                 w_scale = (double) (target_width - vsb_width) / doc_width;
4512         if (doc_width * h_scale > target_width)
4513                 h_scale = (double) (target_height - hsb_width) / doc_height;
4514
4515         return MIN (w_scale, h_scale);
4516 }
4517
4518
4519 static void
4520 ev_view_zoom_for_size_presentation (EvView *view,
4521                                     int     width,
4522                                     int     height)
4523 {
4524         int doc_width, doc_height;
4525         gdouble scale;
4526
4527         ev_page_cache_get_size (view->page_cache,
4528                                 view->current_page,
4529                                 view->rotation,
4530                                 1.0,
4531                                 &doc_width,
4532                                 &doc_height);
4533         scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, 0, 0);
4534         ev_view_set_zoom (view, scale, FALSE);
4535 }
4536
4537 static void
4538 ev_view_zoom_for_size_continuous_and_dual_page (EvView *view,
4539                            int     width,
4540                            int     height,
4541                            int     vsb_width,
4542                            int     hsb_height)
4543 {
4544         int doc_width, doc_height;
4545         GtkBorder border;
4546         gdouble scale;
4547
4548         ev_page_cache_get_max_width (view->page_cache,
4549                                      view->rotation,
4550                                      1.0,
4551                                      &doc_width);
4552         ev_page_cache_get_max_height (view->page_cache,
4553                                       view->rotation,
4554                                       1.0,
4555                                       &doc_height);
4556         compute_border (view, doc_width, doc_height, &border);
4557
4558         doc_width = doc_width * 2;
4559         width -= (2 * (border.left + border.right) + 3 * view->spacing);
4560         height -= (border.top + border.bottom + 2 * view->spacing - 1);
4561
4562         /* FIXME: We really need to calculate the overall height here, not the
4563          * page height.  We assume there's always a vertical scrollbar for
4564          * now.  We need to fix this. */
4565         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
4566                 scale = zoom_for_size_fit_width (doc_width, doc_height, width - vsb_width, height, 0);
4567         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
4568                 scale = zoom_for_size_best_fit (doc_width, doc_height, width - vsb_width, height, 0, hsb_height);
4569         else
4570                 g_assert_not_reached ();
4571
4572         ev_view_set_zoom (view, scale, FALSE);
4573 }
4574
4575 static void
4576 ev_view_zoom_for_size_continuous (EvView *view,
4577                                   int     width,
4578                                   int     height,
4579                                   int     vsb_width,
4580                                   int     hsb_height)
4581 {
4582         int doc_width, doc_height;
4583         GtkBorder border;
4584         gdouble scale;
4585
4586         ev_page_cache_get_max_width (view->page_cache,
4587                                      view->rotation,
4588                                      1.0,
4589                                      &doc_width);
4590         ev_page_cache_get_max_height (view->page_cache,
4591                                       view->rotation,
4592                                       1.0,
4593                                       &doc_height);
4594         compute_border (view, doc_width, doc_height, &border);
4595
4596         width -= (border.left + border.right + 2 * view->spacing);
4597         height -= (border.top + border.bottom + 2 * view->spacing - 1);
4598
4599         /* FIXME: We really need to calculate the overall height here, not the
4600          * page height.  We assume there's always a vertical scrollbar for
4601          * now.  We need to fix this. */
4602         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
4603                 scale = zoom_for_size_fit_width (doc_width, doc_height, width - vsb_width, height, 0);
4604         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
4605                 scale = zoom_for_size_best_fit (doc_width, doc_height, width - vsb_width, height, 0, hsb_height);
4606         else
4607                 g_assert_not_reached ();
4608
4609         ev_view_set_zoom (view, scale, FALSE);
4610 }
4611
4612 static void
4613 ev_view_zoom_for_size_dual_page (EvView *view,
4614                                  int     width,
4615                                  int     height,
4616                                  int     vsb_width,
4617                                  int     hsb_height)
4618 {
4619         GtkBorder border;
4620         gint doc_width, doc_height;
4621         gdouble scale;
4622         gint other_page;
4623
4624         other_page = view->current_page ^ 1;
4625
4626         /* Find the largest of the two. */
4627         ev_page_cache_get_size (view->page_cache,
4628                                 view->current_page,
4629                                 view->rotation,
4630                                 1.0,
4631                                 &doc_width, &doc_height);
4632
4633         if (other_page < ev_page_cache_get_n_pages (view->page_cache)) {
4634                 gint width_2, height_2;
4635                 ev_page_cache_get_size (view->page_cache,
4636                                         other_page,
4637                                         view->rotation,
4638                                         1.0,
4639                                         &width_2, &height_2);
4640                 if (width_2 > doc_width)
4641                         doc_width = width_2;
4642                 if (height_2 > doc_height)
4643                         doc_height = height_2;
4644         }
4645         compute_border (view, doc_width, doc_height, &border);
4646
4647         doc_width = doc_width * 2;
4648         width -= ((border.left + border.right)* 2 + 3 * view->spacing);
4649         height -= (border.top + border.bottom + 2 * view->spacing);
4650
4651         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
4652                 scale = zoom_for_size_fit_width (doc_width, doc_height, width, height, vsb_width);
4653         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
4654                 scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, vsb_width, hsb_height);
4655         else
4656                 g_assert_not_reached ();
4657
4658         ev_view_set_zoom (view, scale, FALSE);
4659 }
4660
4661 static void
4662 ev_view_zoom_for_size_single_page (EvView *view,
4663                                    int     width,
4664                                    int     height,
4665                                    int     vsb_width,
4666                                    int     hsb_height)
4667 {
4668         int doc_width, doc_height;
4669         GtkBorder border;
4670         gdouble scale;
4671
4672         ev_page_cache_get_size (view->page_cache,
4673                                 view->current_page,
4674                                 view->rotation,
4675                                 1.0,
4676                                 &doc_width,
4677                                 &doc_height);
4678         /* Get an approximate border */
4679         compute_border (view, width, height, &border);
4680
4681         width -= (border.left + border.right + 2 * view->spacing);
4682         height -= (border.top + border.bottom + 2 * view->spacing);
4683
4684         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
4685                 scale = zoom_for_size_fit_width (doc_width, doc_height, width, height, vsb_width);
4686         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
4687                 scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, vsb_width, hsb_height);
4688         else
4689                 g_assert_not_reached ();
4690
4691         ev_view_set_zoom (view, scale, FALSE);
4692 }
4693
4694 void
4695 ev_view_set_zoom_for_size (EvView *view,
4696                            int     width,
4697                            int     height,
4698                            int     vsb_width,
4699                            int     hsb_height)
4700 {
4701         g_return_if_fail (view->sizing_mode == EV_SIZING_FIT_WIDTH ||
4702                           view->sizing_mode == EV_SIZING_BEST_FIT);
4703         g_return_if_fail (width >= 0);
4704         g_return_if_fail (height >= 0);
4705
4706         if (view->document == NULL)
4707                 return;
4708
4709         if (view->presentation)
4710                 ev_view_zoom_for_size_presentation (view, width, height);
4711         else if (view->continuous && view->dual_page)
4712                 ev_view_zoom_for_size_continuous_and_dual_page (view, width, height, vsb_width, hsb_height);
4713         else if (view->continuous)
4714                 ev_view_zoom_for_size_continuous (view, width, height, vsb_width, hsb_height);
4715         else if (view->dual_page)
4716                 ev_view_zoom_for_size_dual_page (view, width, height, vsb_width, hsb_height);
4717         else
4718                 ev_view_zoom_for_size_single_page (view, width, height, vsb_width, hsb_height);
4719 }
4720
4721 /*** Status text messages ***/
4722
4723 const char *
4724 ev_view_get_status (EvView *view)
4725 {
4726         g_return_val_if_fail (EV_IS_VIEW (view), NULL);
4727
4728         return view->status;
4729 }
4730
4731 static void
4732 ev_view_set_status (EvView *view, const char *message)
4733 {
4734         g_return_if_fail (EV_IS_VIEW (view));
4735
4736         if (message != view->status) {
4737                 g_free (view->status);
4738                 view->status = g_strdup (message);
4739                 g_object_notify (G_OBJECT (view), "status");
4740         }
4741 }
4742
4743 static void
4744 update_find_status_message (EvView *view, gboolean this_page)
4745 {
4746         char *message;
4747
4748         if (this_page) {
4749                 int results;
4750
4751                 results = ev_document_find_get_n_results
4752                                 (EV_DOCUMENT_FIND (view->document),
4753                                  view->current_page);
4754                 /* TRANS: Sometimes this could be better translated as
4755                    "%d hit(s) on this page".  Therefore this string
4756                    contains plural cases. */
4757                 message = g_strdup_printf (ngettext ("%d found on this page",
4758                                                      "%d found on this page",
4759                                                      results),
4760                                            results);
4761         } else {
4762                 double percent;
4763
4764                 percent = ev_document_find_get_progress
4765                                 (EV_DOCUMENT_FIND (view->document));
4766                 message = g_strdup_printf (_("%3d%% remaining to search"),
4767                                            (int) ((1.0 - percent) * 100));
4768
4769         }
4770         ev_view_set_find_status (view, message);
4771         g_free (message);
4772 }
4773
4774 const char *
4775 ev_view_get_find_status (EvView *view)
4776 {
4777         g_return_val_if_fail (EV_IS_VIEW (view), NULL);
4778
4779         return view->find_status;
4780 }
4781
4782 static void
4783 ev_view_set_find_status (EvView *view, const char *message)
4784 {
4785         g_return_if_fail (EV_IS_VIEW (view));
4786
4787         g_free (view->find_status);
4788         view->find_status = g_strdup (message);
4789         g_object_notify (G_OBJECT (view), "find-status");
4790 }
4791
4792 /*** Find ***/
4793
4794 static void
4795 jump_to_find_result (EvView *view)
4796 {
4797         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
4798         EvRectangle rect;
4799         GdkRectangle view_rect;
4800         int n_results;
4801         int page = view->current_page;
4802
4803         n_results = ev_document_find_get_n_results (find, page);
4804
4805         if (n_results > 0  && view->find_result < n_results) {
4806                 ev_document_find_get_result
4807                         (find, page, view->find_result, &rect);
4808
4809                 doc_rect_to_view_rect (view, page, &rect, &view_rect);
4810                 ensure_rectangle_is_visible (view, &view_rect);
4811         }
4812 }
4813
4814 /**
4815  * jump_to_find_page
4816  * @view: #EvView instance
4817  * @direction: Direction to look
4818  * @shift: Shift from current page
4819  *
4820  * Jumps to the first page that has occurences of searched word.
4821  * Uses a direction where to look and a shift from current page.
4822  *
4823  */
4824 static void
4825 jump_to_find_page (EvView *view, EvViewFindDirection direction, gint shift)
4826 {
4827         int n_pages, i;
4828
4829         n_pages = ev_page_cache_get_n_pages (view->page_cache);
4830
4831         for (i = 0; i < n_pages; i++) {
4832                 int has_results;
4833                 int page;
4834
4835                 if (direction == EV_VIEW_FIND_NEXT)
4836                         page = view->current_page + i;
4837                 else
4838                         page = view->current_page - i;
4839                 page += shift;
4840
4841                 if (page >= n_pages) {
4842                         page = page - n_pages;
4843                 }
4844                 if (page < 0)
4845                         page = page + n_pages;
4846
4847                 has_results = ev_document_find_page_has_results
4848                                 (EV_DOCUMENT_FIND (view->document), page);
4849                 if (has_results == -1) {
4850                         break;
4851                 } else if (has_results == 1) {
4852                         ev_page_cache_set_current_page (view->page_cache, page);
4853                         break;
4854                 }
4855         }
4856 }
4857
4858 gboolean
4859 ev_view_can_find_next (EvView *view)
4860 {
4861         if (EV_IS_DOCUMENT_FIND (view->document)) {
4862                 EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
4863                 int i, n_pages;
4864
4865                 n_pages = ev_page_cache_get_n_pages (view->page_cache);
4866                 for (i = 0; i < n_pages; i++) {
4867                         if (ev_document_find_get_n_results (find, i) > 0) {
4868                                 return TRUE;
4869                         }
4870                 }
4871         }
4872
4873         return FALSE;
4874 }
4875
4876 void
4877 ev_view_find_next (EvView *view)
4878 {
4879         int n_results, n_pages;
4880         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
4881
4882         n_results = ev_document_find_get_n_results (find, view->current_page);
4883
4884         n_pages = ev_page_cache_get_n_pages (view->page_cache);
4885
4886         view->find_result++;
4887
4888         if (view->find_result >= n_results) {
4889
4890                 view->find_result = 0;
4891                 jump_to_find_page (view, EV_VIEW_FIND_NEXT, 1);
4892                 jump_to_find_result (view);
4893         } else {
4894                 jump_to_find_result (view);
4895                 gtk_widget_queue_draw (GTK_WIDGET (view));
4896         }
4897 }
4898
4899 gboolean
4900 ev_view_can_find_previous (EvView *view)
4901 {
4902         if (EV_IS_DOCUMENT_FIND (view->document)) {
4903                 EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
4904                 int i, n_pages;
4905
4906                 n_pages = ev_page_cache_get_n_pages (view->page_cache);
4907                 for (i = n_pages - 1; i >= 0; i--) {
4908                         if (ev_document_find_get_n_results (find, i) > 0) {
4909                                 return TRUE;
4910                         }
4911                 }
4912         }
4913
4914         return FALSE;
4915 }
4916 void
4917 ev_view_find_previous (EvView *view)
4918 {
4919         int n_results, n_pages;
4920         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
4921         EvPageCache *page_cache;
4922
4923         page_cache = ev_page_cache_get (view->document);
4924
4925         n_results = ev_document_find_get_n_results (find, view->current_page);
4926
4927         n_pages = ev_page_cache_get_n_pages (page_cache);
4928
4929         view->find_result--;
4930
4931         if (view->find_result < 0) {
4932
4933                 jump_to_find_page (view, EV_VIEW_FIND_PREV, -1);
4934                 view->find_result = ev_document_find_get_n_results (find, view->current_page) - 1;
4935                 jump_to_find_result (view);
4936         } else {
4937                 jump_to_find_result (view);
4938                 gtk_widget_queue_draw (GTK_WIDGET (view));
4939         }
4940 }
4941
4942 void ev_view_search_changed (EvView *view)
4943 {
4944         /* search string has changed, focus on new search result */
4945         view->jump_to_find_result = TRUE;
4946 }
4947
4948 /*** Selections ***/
4949
4950 /* compute_new_selection_rect/text calculates the area currently selected by
4951  * view_rect.  each handles a different mode;
4952  */
4953 static GList *
4954 compute_new_selection_rect (EvView       *view,
4955                             GdkPoint     *start,
4956                             GdkPoint     *stop)
4957 {
4958         GdkRectangle view_rect;
4959         int n_pages, i;
4960         GList *list = NULL;
4961
4962         g_assert (view->selection_mode == EV_VIEW_SELECTION_RECTANGLE);
4963
4964         view_rect.x = MIN (start->x, stop->x);
4965         view_rect.y = MIN (start->y, stop->y);
4966         view_rect.width = MAX (start->x, stop->x) - view_rect.x;
4967         view_rect.width = MAX (start->y, stop->y) - view_rect.y;
4968
4969         n_pages = ev_page_cache_get_n_pages (view->page_cache);
4970
4971         for (i = 0; i < n_pages; i++) {
4972                 GdkRectangle page_area;
4973                 GtkBorder border;
4974
4975                 if (get_page_extents (view, i, &page_area, &border)) {
4976                         GdkRectangle overlap;
4977
4978                         if (gdk_rectangle_intersect (&page_area, &view_rect, &overlap)) {
4979                                 EvViewSelection *selection;
4980
4981                                 selection = g_new0 (EvViewSelection, 1);
4982                                 selection->page = i;
4983                                 view_rect_to_doc_rect (view, &overlap, &page_area,
4984                                                        &(selection->rect));
4985
4986                                 list = g_list_append (list, selection);
4987                         }
4988                 }
4989         }
4990
4991         return list;
4992 }
4993
4994 static gboolean
4995 gdk_rectangle_point_in (GdkRectangle *rectangle,
4996                         GdkPoint     *point)
4997 {
4998         return rectangle->x <= point->x &&
4999                 rectangle->y <= point->y &&
5000                 point->x < rectangle->x + rectangle->width &&
5001                 point->y < rectangle->y + rectangle->height;
5002 }
5003
5004 static GList *
5005 compute_new_selection_text (EvView   *view,
5006                             GdkPoint *start,
5007                             GdkPoint *stop)
5008 {
5009         int n_pages, i, first, last;
5010         GList *list = NULL;
5011         EvViewSelection *selection;
5012         gint width, height;
5013         int start_page, end_page;
5014
5015         g_assert (view->selection_mode == EV_VIEW_SELECTION_TEXT);
5016
5017         n_pages = ev_page_cache_get_n_pages (view->page_cache);
5018
5019         /* First figure out the range of pages the selection
5020          * affects. */
5021         first = n_pages;
5022         last = 0;
5023         if (view->continuous) {
5024                 start_page = 0;
5025                 end_page = n_pages;
5026         } else if (view->dual_page) {
5027                 start_page = view->start_page;
5028                 end_page = view->end_page + 1;
5029         } else {
5030                 start_page = view->current_page;
5031                 end_page = view->current_page + 1;
5032         }
5033
5034         for (i = start_page; i < end_page; i++) {
5035                 GdkRectangle page_area;
5036                 GtkBorder border;
5037
5038                 get_page_extents (view, i, &page_area, &border);
5039                 if (gdk_rectangle_point_in (&page_area, start) ||
5040                     gdk_rectangle_point_in (&page_area, stop)) {
5041                         if (first == n_pages)
5042                                 first = i;
5043                         last = i;
5044                 }
5045
5046         }
5047
5048         /* Now create a list of EvViewSelection's for the affected
5049          * pages.  This could be an empty list, a list of just one
5050          * page or a number of pages.*/
5051         for (i = first; i < last + 1; i++) {
5052                 GdkRectangle page_area;
5053                 GtkBorder border;
5054                 GdkPoint *point;
5055
5056                 ev_page_cache_get_size (view->page_cache, i,
5057                                         view->rotation,
5058                                         1.0, &width, &height);
5059
5060                 selection = g_new0 (EvViewSelection, 1);
5061                 selection->page = i;
5062                 selection->rect.x1 = selection->rect.y1 = 0;
5063                 selection->rect.x2 = width;
5064                 selection->rect.y2 = height;
5065
5066                 get_page_extents (view, i, &page_area, &border);
5067
5068                 if (gdk_rectangle_point_in (&page_area, start))
5069                         point = start;
5070                 else
5071                         point = stop;
5072
5073                 if (i == first)
5074                         view_point_to_doc_point (view, point, &page_area,
5075                                                  &selection->rect.x1,
5076                                                  &selection->rect.y1);
5077
5078                 /* If the selection is contained within just one page,
5079                  * make sure we don't write 'start' into both points
5080                  * in selection->rect. */
5081                 if (first == last)
5082                         point = stop;
5083
5084                 if (i == last)
5085                         view_point_to_doc_point (view, point, &page_area,
5086                                                  &selection->rect.x2,
5087                                                  &selection->rect.y2);
5088
5089                 list = g_list_append (list, selection);
5090         }
5091
5092         return list;
5093 }
5094
5095 /* This function takes the newly calculated list, and figures out which regions
5096  * have changed.  It then queues a redraw approporiately.
5097  */
5098 static void
5099 merge_selection_region (EvView *view,
5100                         GList  *new_list)
5101 {
5102         GList *old_list;
5103         GList *new_list_ptr, *old_list_ptr;
5104
5105         /* Update the selection */
5106         old_list = ev_pixbuf_cache_get_selection_list (view->pixbuf_cache);
5107         g_list_foreach (view->selection_info.selections, (GFunc)selection_free, NULL);
5108         view->selection_info.selections = new_list;
5109         ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, new_list);
5110         g_object_notify (G_OBJECT (view), "has-selection");
5111
5112         new_list_ptr = new_list;
5113         old_list_ptr = old_list;
5114
5115         while (new_list_ptr || old_list_ptr) {
5116                 EvViewSelection *old_sel, *new_sel;
5117                 int cur_page;
5118                 GdkRegion *region = NULL;
5119
5120                 new_sel = (new_list_ptr) ? (new_list_ptr->data) : NULL;
5121                 old_sel = (old_list_ptr) ? (old_list_ptr->data) : NULL;
5122
5123                 /* Assume that the lists are in order, and we run through them
5124                  * comparing them, one page at a time.  We come out with the
5125                  * first page we see. */
5126                 if (new_sel && old_sel) {
5127                         if (new_sel->page < old_sel->page) {
5128                                 new_list_ptr = new_list_ptr->next;
5129                                 old_sel = NULL;
5130                         } else if (new_sel->page > old_sel->page) {
5131                                 old_list_ptr = old_list_ptr->next;
5132                                 new_sel = NULL;
5133                         } else {
5134                                 new_list_ptr = new_list_ptr->next;
5135                                 old_list_ptr = old_list_ptr->next;
5136                         }
5137                 } else if (new_sel) {
5138                         new_list_ptr = new_list_ptr->next;
5139                 } else if (old_sel) {
5140                         old_list_ptr = old_list_ptr->next;
5141                 }
5142
5143                 g_assert (new_sel || old_sel);
5144
5145                 /* is the page we're looking at on the screen?*/
5146                 cur_page = new_sel ? new_sel->page : old_sel->page;
5147                 if (cur_page < view->start_page || cur_page > view->end_page)
5148                         continue;
5149
5150                 /* seed the cache with a new page.  We are going to need the new
5151                  * region too. */
5152                 if (new_sel) {
5153                         GdkRegion *tmp_region = NULL;
5154
5155                         ev_pixbuf_cache_get_selection_surface (view->pixbuf_cache,
5156                                                                cur_page,
5157                                                                view->scale,
5158                                                                &tmp_region);
5159
5160                         if (tmp_region) {
5161                                 new_sel->covered_region = gdk_region_copy (tmp_region);
5162                         }
5163                 }
5164
5165                 /* Now we figure out what needs redrawing */
5166                 if (old_sel && new_sel) {
5167                         if (old_sel->covered_region && new_sel->covered_region) {
5168                                 /* We only want to redraw the areas that have
5169                                  * changed, so we xor the old and new regions
5170                                  * and redraw if it's different */
5171                                 region = gdk_region_copy (old_sel->covered_region);
5172                                 gdk_region_xor (region, new_sel->covered_region);
5173                                 if (gdk_region_empty (region)) {
5174                                         gdk_region_destroy (region);
5175                                         region = NULL;
5176                                 }
5177                         } else if (old_sel->covered_region) {
5178                                 region = gdk_region_copy (old_sel->covered_region);
5179                         } else if (new_sel->covered_region) {
5180                                 region = gdk_region_copy (new_sel->covered_region);
5181                         }
5182                 } else if (old_sel && !new_sel) {
5183                         if (old_sel->covered_region && !gdk_region_empty (old_sel->covered_region)) {
5184                                 region = gdk_region_copy (old_sel->covered_region);
5185                         }
5186                 } else if (!old_sel && new_sel) {
5187                         if (new_sel->covered_region && !gdk_region_empty (new_sel->covered_region)) {
5188                                 region = gdk_region_copy (new_sel->covered_region);
5189                         }
5190                 } else {
5191                         g_assert_not_reached ();
5192                 }
5193
5194                 /* Redraw the damaged region! */
5195                 if (region) {
5196                         GdkRectangle page_area;
5197                         GtkBorder border;
5198
5199                         /* I don't know why but the region is smaller
5200                          * than expected. This hack fixes it, I guess
5201                          * 10 pixels more won't hurt
5202                          */
5203                         gdk_region_shrink (region, -5, -5);
5204
5205                         get_page_extents (view, cur_page, &page_area, &border);
5206                         gdk_region_offset (region,
5207                                            page_area.x + border.left - view->scroll_x,
5208                                            page_area.y + border.top - view->scroll_y);
5209                         gdk_window_invalidate_region (view->layout.bin_window, region, TRUE);
5210                         gdk_region_destroy (region);
5211                 }
5212         }
5213
5214         /* Free the old list, now that we're done with it. */
5215         g_list_foreach (old_list, (GFunc) selection_free, NULL);
5216 }
5217
5218 static void
5219 compute_selections (EvView   *view,
5220                     GdkPoint *start,
5221                     GdkPoint *stop)
5222 {
5223         GList *list;
5224
5225         if (view->selection_mode == EV_VIEW_SELECTION_RECTANGLE)
5226                 list = compute_new_selection_rect (view, start, stop);
5227         else
5228                 list = compute_new_selection_text (view, start, stop);
5229         merge_selection_region (view, list);
5230 }
5231
5232 /* Free's the selection.  It's up to the caller to queue redraws if needed.
5233  */
5234 static void
5235 selection_free (EvViewSelection *selection)
5236 {
5237         if (selection->covered_region)
5238                 gdk_region_destroy (selection->covered_region);
5239         g_free (selection);
5240 }
5241
5242 static void
5243 clear_selection (EvView *view)
5244 {
5245         g_list_foreach (view->selection_info.selections, (GFunc)selection_free, NULL);
5246         view->selection_info.selections = NULL;
5247         view->selection_info.in_selection = FALSE;
5248         if (view->pixbuf_cache)
5249                 ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, NULL);
5250         g_object_notify (G_OBJECT (view), "has-selection");
5251 }
5252
5253
5254 void
5255 ev_view_select_all (EvView *view)
5256 {
5257         int n_pages, i;
5258
5259         /* Disable selection on rotated pages for the 0.4.0 series */
5260         if (view->rotation != 0)
5261                 return;
5262
5263         clear_selection (view);
5264
5265         n_pages = ev_page_cache_get_n_pages (view->page_cache);
5266         for (i = 0; i < n_pages; i++) {
5267                 int width, height;
5268                 EvViewSelection *selection;
5269
5270                 ev_page_cache_get_size (view->page_cache,
5271                                         i,
5272                                         view->rotation,
5273                                         1.0, &width, &height);
5274
5275                 selection = g_new0 (EvViewSelection, 1);
5276                 selection->page = i;
5277                 selection->rect.x1 = selection->rect.y1 = 0;
5278                 selection->rect.x2 = width;
5279                 selection->rect.y2 = height;
5280
5281                 view->selection_info.selections = g_list_append (view->selection_info.selections, selection);
5282         }
5283
5284         ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, view->selection_info.selections);
5285         g_object_notify (G_OBJECT (view), "has-selection");
5286         gtk_widget_queue_draw (GTK_WIDGET (view));
5287 }
5288
5289 gboolean
5290 ev_view_get_has_selection (EvView *view)
5291 {
5292         return view->selection_info.selections != NULL;
5293 }
5294
5295 static char *
5296 get_selected_text (EvView *ev_view)
5297 {
5298         GString *text;
5299         GList *l;
5300         gchar *normalized_text;
5301
5302         text = g_string_new (NULL);
5303
5304         ev_document_doc_mutex_lock ();
5305
5306         for (l = ev_view->selection_info.selections; l != NULL; l = l->next) {
5307                 EvViewSelection *selection = (EvViewSelection *)l->data;
5308                 char *tmp;
5309
5310                 tmp = ev_document_get_text (ev_view->document,
5311                                             selection->page,
5312                                             &selection->rect);
5313                 g_string_append (text, tmp);
5314                 g_free (tmp);
5315         }
5316
5317         ev_document_doc_mutex_unlock ();
5318
5319         normalized_text = g_utf8_normalize (text->str, text->len, G_NORMALIZE_NFKC);
5320         g_string_free (text, TRUE);
5321         return normalized_text;
5322 }
5323
5324 void
5325 ev_view_copy (EvView *ev_view)
5326 {
5327         GtkClipboard *clipboard;
5328         char *text;
5329
5330         if (!ev_document_can_get_text (ev_view->document)) {
5331                 return;
5332         }
5333
5334         text = get_selected_text (ev_view);
5335         clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view),
5336                                               GDK_SELECTION_CLIPBOARD);
5337         gtk_clipboard_set_text (clipboard, text, -1);
5338         g_free (text);
5339 }
5340
5341 static void
5342 ev_view_primary_get_cb (GtkClipboard     *clipboard,
5343                         GtkSelectionData *selection_data,
5344                         guint             info,
5345                         gpointer          data)
5346 {
5347         EvView *ev_view = EV_VIEW (data);
5348         char *text;
5349
5350         if (!ev_document_can_get_text (ev_view->document)) {
5351                 return;
5352         }
5353
5354         text = get_selected_text (ev_view);
5355         if (text) {
5356                 gtk_selection_data_set_text (selection_data, text, -1);
5357                 g_free (text);
5358         }
5359 }
5360
5361 static void
5362 ev_view_primary_clear_cb (GtkClipboard *clipboard,
5363                           gpointer      data)
5364 {
5365         EvView *view = EV_VIEW (data);
5366
5367         clear_selection (view);
5368 }
5369
5370 static void
5371 ev_view_update_primary_selection (EvView *ev_view)
5372 {
5373         GtkClipboard *clipboard;
5374
5375         clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view),
5376                                               GDK_SELECTION_PRIMARY);
5377
5378         if (ev_view->selection_info.selections) {
5379                 if (!gtk_clipboard_set_with_owner (clipboard,
5380                                                    clipboard_targets,
5381                                                    G_N_ELEMENTS (clipboard_targets),
5382                                                    ev_view_primary_get_cb,
5383                                                    ev_view_primary_clear_cb,
5384                                                    G_OBJECT (ev_view)))
5385                         ev_view_primary_clear_cb (clipboard, ev_view);
5386         } else {
5387                 if (gtk_clipboard_get_owner (clipboard) == G_OBJECT (ev_view))
5388                         gtk_clipboard_clear (clipboard);
5389         }
5390 }
5391
5392 /*** Cursor operations ***/
5393
5394 static GdkCursor *
5395 ev_view_create_invisible_cursor(void)
5396 {
5397        GdkBitmap *empty;
5398        GdkColor black = { 0, 0, 0, 0 };
5399        static char bits[] = { 0x00 };
5400
5401        empty = gdk_bitmap_create_from_data (NULL, bits, 1, 1);
5402
5403        return gdk_cursor_new_from_pixmap (empty, empty, &black, &black, 0, 0);
5404 }
5405
5406 static void
5407 ev_view_set_cursor (EvView *view, EvViewCursor new_cursor)
5408 {
5409         GdkCursor *cursor = NULL;
5410         GdkDisplay *display;
5411         GtkWidget *widget;
5412
5413         if (view->cursor == new_cursor) {
5414                 return;
5415         }
5416
5417         widget = gtk_widget_get_toplevel (GTK_WIDGET (view));
5418         display = gtk_widget_get_display (widget);
5419         view->cursor = new_cursor;
5420
5421         switch (new_cursor) {
5422                 case EV_VIEW_CURSOR_NORMAL:
5423                         gdk_window_set_cursor (view->layout.bin_window, NULL);
5424                         break;
5425                 case EV_VIEW_CURSOR_IBEAM:
5426                         cursor = gdk_cursor_new_for_display (display, GDK_XTERM);
5427                         break;
5428                 case EV_VIEW_CURSOR_LINK:
5429                         cursor = gdk_cursor_new_for_display (display, GDK_HAND2);
5430                         break;
5431                 case EV_VIEW_CURSOR_WAIT:
5432                         cursor = gdk_cursor_new_for_display (display, GDK_WATCH);
5433                         break;
5434                 case EV_VIEW_CURSOR_HIDDEN:
5435                         cursor = ev_view_create_invisible_cursor ();
5436                         break;
5437                 case EV_VIEW_CURSOR_DRAG:
5438                         cursor = gdk_cursor_new_for_display (display, GDK_FLEUR);
5439                         break;
5440         }
5441
5442         if (cursor) {
5443                 gdk_window_set_cursor (view->layout.bin_window, cursor);
5444                 gdk_cursor_unref (cursor);
5445                 gdk_flush();
5446         }
5447 }
5448
5449 void
5450 ev_view_hide_cursor (EvView *view)
5451 {
5452        ev_view_set_cursor (view, EV_VIEW_CURSOR_HIDDEN);
5453 }
5454
5455 void
5456 ev_view_show_cursor (EvView *view)
5457 {
5458        ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
5459 }
5460
5461 static void
5462 ev_view_reset_presentation_state (EvView *view)
5463 {
5464         if (!view->presentation ||
5465             view->presentation_state == EV_PRESENTATION_NORMAL)
5466                 return;
5467
5468         view->presentation_state = EV_PRESENTATION_NORMAL;
5469         gdk_window_set_background (view->layout.bin_window,
5470                                    &GTK_WIDGET (view)->style->black);
5471         gtk_widget_queue_draw (GTK_WIDGET (view));
5472 }
5473
5474 gboolean
5475 ev_view_next_page (EvView *view)
5476 {
5477         int page, n_pages;
5478
5479         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
5480
5481         if (!view->page_cache)
5482                 return FALSE;
5483
5484         if (view->presentation &&
5485             (view->presentation_state == EV_PRESENTATION_BLACK ||
5486              view->presentation_state == EV_PRESENTATION_WHITE)) {
5487                 ev_view_reset_presentation_state (view);
5488                 return FALSE;
5489         }
5490
5491         ev_view_presentation_transition_stop (view);
5492         ev_view_reset_presentation_state (view);
5493
5494         page = ev_page_cache_get_current_page (view->page_cache);
5495         n_pages = ev_page_cache_get_n_pages (view->page_cache);
5496
5497         if (view->dual_page && !view->presentation)
5498                 page = page + 2;
5499         else
5500                 page = page + 1;
5501
5502         if (page < n_pages) {
5503                 ev_page_cache_set_current_page (view->page_cache, page);
5504                 return TRUE;
5505         } else if (view->presentation && page == n_pages) {
5506                 view->presentation_state = EV_PRESENTATION_END;
5507                 gtk_widget_queue_draw (GTK_WIDGET (view));
5508                 return TRUE;
5509         } else if (view->dual_page && page == n_pages) {
5510                 ev_page_cache_set_current_page (view->page_cache, page - 1);
5511                 return TRUE;
5512         } else {
5513                 return FALSE;
5514         }
5515 }
5516
5517 gboolean
5518 ev_view_previous_page (EvView *view)
5519 {
5520         int page;
5521
5522         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
5523
5524         if (!view->page_cache)
5525                 return FALSE;
5526
5527         if (view->presentation &&
5528             view->presentation_state == EV_PRESENTATION_END) {
5529                 ev_view_reset_presentation_state (view);
5530                 return TRUE;
5531         }
5532
5533         if (view->presentation &&
5534             (view->presentation_state == EV_PRESENTATION_BLACK ||
5535              view->presentation_state == EV_PRESENTATION_WHITE)) {
5536                 ev_view_reset_presentation_state (view);
5537                 return FALSE;
5538         }
5539
5540         ev_view_reset_presentation_state (view);
5541
5542         page = ev_page_cache_get_current_page (view->page_cache);
5543
5544         if (view->dual_page && !view->presentation)
5545                 page = page - 2;
5546         else
5547                 page = page - 1;
5548
5549         if (page >= 0) {
5550                 ev_page_cache_set_current_page (view->page_cache, page);
5551                 return TRUE;
5552         } else if (ev_view_get_dual_page (view) && page == -1) {
5553                 ev_page_cache_set_current_page (view->page_cache, 0);
5554                 return TRUE;
5555         } else {
5556                 return FALSE;
5557         }
5558 }
5559
5560 /*** Enum description for usage in signal ***/
5561
5562 GType
5563 ev_sizing_mode_get_type (void)
5564 {
5565   static GType etype = 0;
5566   if (etype == 0) {
5567     static const GEnumValue values[] = {
5568       { EV_SIZING_FIT_WIDTH, "EV_SIZING_FIT_WIDTH", "fit-width" },
5569       { EV_SIZING_BEST_FIT, "EV_SIZING_BEST_FIT", "best-fit" },
5570       { EV_SIZING_FREE, "EV_SIZING_FREE", "free" },
5571       { 0, NULL, NULL }
5572     };
5573     etype = g_enum_register_static ("EvSizingMode", values);
5574   }
5575   return etype;
5576 }
5577
5578 GType
5579 ev_scroll_type_get_type (void)
5580 {
5581   static GType etype = 0;
5582   if (etype == 0) {
5583     static const GEnumValue values[] = {
5584       { EV_SCROLL_PAGE_FORWARD, "EV_SCROLL_PAGE_FORWARD", "scroll-page-forward" },
5585       { EV_SCROLL_PAGE_BACKWARD, "EV_SCROLL_PAGE_BACKWARD", "scroll-page-backward" },
5586       { EV_SCROLL_STEP_FORWARD, "EV_SCROLL_STEP_FORWARD", "scroll-step-forward" },
5587       { EV_SCROLL_STEP_FORWARD, "EV_SCROLL_STEP_FORWARD", "scroll-step-forward" },
5588       { EV_SCROLL_STEP_UP, "EV_SCROLL_STEP_UP", "scroll-step-up" },
5589       { EV_SCROLL_STEP_DOWN, "EV_SCROLL_STEP_DOWN", "scroll-step-down" },
5590       { 0, NULL, NULL }
5591     };
5592     etype = g_enum_register_static ("EvScrollType", values);
5593   }
5594   return etype;
5595 }