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