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