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-document-links.h"
  36 #include "ev-document-images.h"
  37 #include "ev-document-find.h"
  38 #include "ev-document-transition.h"
  39 #include "ev-document-forms.h"
  40 #include "ev-document-misc.h"
  41 #include "ev-job-queue.h"
  42 #include "ev-page-cache.h"
  43 #include "ev-pixbuf-cache.h"
  44 #if !GTK_CHECK_VERSION (2, 11, 7)
  45 #include "ev-tooltip.h"
  46 #endif
  47 #include "ev-application.h"
  48
  49 #define EV_VIEW_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass), EV_TYPE_VIEW, EvViewClass))
  50 #define EV_IS_VIEW_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), EV_TYPE_VIEW))
  51 #define EV_VIEW_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj), EV_TYPE_VIEW, EvViewClass))
  52
  53
  54 enum {
  55         PROP_0,
  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                                                               cairo_t            *cr,
 222                                                               GdkRectangle       *page_area,
 223                                                               GtkBorder          *border,
 224                                                               GdkRectangle       *expose_area,
 225                                                               gboolean           *page_ready);
 226 static void       draw_loading_text                          (EvView             *view,
 227                                                               GdkRectangle       *page_area,
 228                                                               GdkRectangle       *expose_area);
 229
 230 /*** Callbacks ***/
 231 static void       find_changed_cb                            (EvDocument         *document,
 232                                                               int                 page,
 233                                                               EvView             *view);
 234 static void       job_finished_cb                            (EvPixbufCache      *pixbuf_cache,
 235                                                               GdkRegion          *region,
 236                                                               EvView             *view);
 237 static void       page_changed_cb                            (EvPageCache        *page_cache,
 238                                                               int                 new_page,
 239                                                               EvView             *view);
 240 static void       on_adjustment_value_changed                (GtkAdjustment      *adjustment,
 241                                                               EvView             *view);
 242
 243 /*** GObject ***/
 244 static void       ev_view_finalize                           (GObject            *object);
 245 static void       ev_view_destroy                            (GtkObject          *object);
 246 static void       ev_view_set_property                       (GObject            *object,
 247                                                               guint               prop_id,
 248                                                               const GValue       *value,
 249                                                               GParamSpec         *pspec);
 250 static void       ev_view_get_property                       (GObject            *object,
 251                                                               guint               prop_id,
 252                                                               GValue             *value,
 253                                                               GParamSpec         *pspec);
 254 static void       ev_view_class_init                         (EvViewClass        *class);
 255 static void       ev_view_init                               (EvView             *view);
 256
 257 /*** Zoom and sizing ***/
 258 static double   zoom_for_size_fit_width                      (int doc_width,
 259                                                               int doc_height,
 260                                                               int target_width,
 261                                                               int target_height,
 262                                                               int vsb_width);
 263 static double   zoom_for_size_fit_height                     (int doc_width,
 264                                                               int doc_height,
 265                                                               int target_width,
 266                                                               int target_height,
 267                                                               int vsb_height);
 268 static double   zoom_for_size_best_fit                       (int doc_width,
 269                                                               int doc_height,
 270                                                               int target_width,
 271                                                               int target_height,
 272                                                               int vsb_width,
 273                                                               int hsb_width);
 274 static void     ev_view_zoom_for_size_presentation           (EvView *view,
 275                                                               int     width,
 276                                                               int     height);
 277 static void     ev_view_zoom_for_size_continuous_and_dual_page (EvView *view,
 278                                                                 int     width,
 279                                                                 int     height,
 280                                                                 int     vsb_width,
 281                                                                 int     hsb_height);
 282 static void     ev_view_zoom_for_size_continuous               (EvView *view,
 283                                                                 int     width,
 284                                                                 int     height,
 285                                                                 int     vsb_width,
 286                                                                 int     hsb_height);
 287 static void     ev_view_zoom_for_size_dual_page                (EvView *view,
 288                                                                 int     width,
 289                                                                 int     height,
 290                                                                 int     vsb_width,
 291                                                                 int     hsb_height);
 292 static void     ev_view_zoom_for_size_single_page              (EvView *view,
 293                                                                 int     width,
 294                                                                 int     height,
 295                                                                 int     vsb_width,
 296                                                                 int     hsb_height);
 297 /*** Cursors ***/
 298 static GdkCursor* ev_view_create_invisible_cursor            (void);
 299 static void       ev_view_set_cursor                         (EvView             *view,
 300                                                               EvViewCursor        new_cursor);
 301 static void       ev_view_handle_cursor_over_xy              (EvView *view,
 302                                                               gint x,
 303                                                               gint y);
 304
 305 /*** Find ***/
 306 static void       update_find_status_message                 (EvView             *view,
 307                                                               gboolean            this_page);
 308 static void       ev_view_set_find_status                    (EvView             *view,
 309                                                               const char         *message);
 310 static void       jump_to_find_result                        (EvView             *view);
 311 static void       jump_to_find_page                          (EvView             *view,
 312                                                               EvViewFindDirection direction,
 313                                                               gint                shift);
 314
 315 /*** Selection ***/
 316 static void       compute_selections                         (EvView             *view,
 317                                                               EvSelectionStyle    style,
 318                                                               GdkPoint           *start,
 319                                                               GdkPoint           *stop);
 320 static void       clear_selection                            (EvView             *view);
 321 static void       selection_free                             (EvViewSelection    *selection);
 322 static char*      get_selected_text                          (EvView             *ev_view);
 323 static void       ev_view_primary_get_cb                     (GtkClipboard       *clipboard,
 324                                                               GtkSelectionData   *selection_data,
 325                                                               guint               info,
 326                                                               gpointer            data);
 327 static void       ev_view_primary_clear_cb                   (GtkClipboard       *clipboard,
 328                                                               gpointer            data);
 329 static void       ev_view_update_primary_selection           (EvView             *ev_view);
 330
 331 /*** Presentation ***/
 332 static void       ev_view_presentation_transition_start      (EvView             *ev_view);
 333 static void       ev_view_presentation_transition_stop       (EvView             *ev_view);
 334
 335
 336 G_DEFINE_TYPE (EvView, ev_view, GTK_TYPE_LAYOUT)
 337
 338 static void
 339 scroll_to_current_page (EvView *view, GtkOrientation orientation)
 340 {
 341         GdkPoint view_point;
 342
 343         if (view->document == NULL) {
 344                 return;
 345         }
 346
 347         doc_point_to_view_point (view, view->current_page, &view->pending_point, &view_point);
 348
 349         if (orientation == GTK_ORIENTATION_VERTICAL) {
 350                 view->pending_point.y = 0;
 351         } else {
 352                 view->pending_point.x = 0;
 353         }
 354
 355         if (orientation == GTK_ORIENTATION_VERTICAL) {
 356                 if (view->continuous) {
 357                         gtk_adjustment_clamp_page (view->vadjustment,
 358                                                    view_point.y - view->spacing / 2,
 359                                                    view_point.y + view->vadjustment->page_size);
 360                 } else {
 361                         gtk_adjustment_set_value (view->vadjustment,
 362                                                   CLAMP (view_point.y,
 363                                                   view->vadjustment->lower,
 364                                                   view->vadjustment->upper -
 365                                                   view->vadjustment->page_size));
 366                 }
 367         } else {
 368                 if (view->dual_page) {
 369                         gtk_adjustment_clamp_page (view->hadjustment,
 370                                                    view_point.x,
 371                                                    view_point.x + view->hadjustment->page_size);
 372                 } else {
 373                         gtk_adjustment_set_value (view->hadjustment,
 374                                                   CLAMP (view_point.x,
 375                                                   view->hadjustment->lower,
 376                                                   view->hadjustment->upper -
 377                                                   view->hadjustment->page_size));
 378                 }
 379         }
 380 }
 381
 382 static void
 383 view_set_adjustment_values (EvView         *view,
 384                             GtkOrientation  orientation)
 385 {
 386         GtkWidget *widget = GTK_WIDGET (view);
 387         GtkAdjustment *adjustment;
 388         int requisition;
 389         int allocation;
 390
 391         double factor;
 392         gint new_value;
 393
 394         if (orientation == GTK_ORIENTATION_HORIZONTAL)  {
 395                 requisition = widget->requisition.width;
 396                 allocation = widget->allocation.width;
 397                 adjustment = view->hadjustment;
 398         } else {
 399                 requisition = widget->requisition.height;
 400                 allocation = widget->allocation.height;
 401                 adjustment = view->vadjustment;
 402         }
 403
 404         if (!adjustment)
 405                 return;
 406
 407         factor = 1.0;
 408         switch (view->pending_scroll) {
 409                 case SCROLL_TO_KEEP_POSITION:
 410                 case SCROLL_TO_FIND_LOCATION:
 411                         factor = (adjustment->value) / adjustment->upper;
 412                         break;
 413                 case SCROLL_TO_PAGE_POSITION:
 414                         break;
 415                 case SCROLL_TO_CENTER:
 416                         factor = (adjustment->value + adjustment->page_size * 0.5) / adjustment->upper;
 417                         break;
 418         }
 419
 420         adjustment->page_size = allocation;
 421         adjustment->step_increment = allocation * 0.1;
 422         adjustment->page_increment = allocation * 0.9;
 423         adjustment->lower = 0;
 424         adjustment->upper = MAX (allocation, requisition);
 425
 426         /*
 427          * We add 0.5 to the values before to average out our rounding errors.
 428          */
 429         switch (view->pending_scroll) {
 430                 case SCROLL_TO_KEEP_POSITION:
 431                 case SCROLL_TO_FIND_LOCATION:
 432                         new_value = CLAMP (adjustment->upper * factor + 0.5, 0, adjustment->upper - adjustment->page_size);
 433                         gtk_adjustment_set_value (adjustment, (int)new_value);
 434                         break;
 435                 case SCROLL_TO_PAGE_POSITION:
 436                         scroll_to_current_page (view, orientation);
 437                         break;
 438                 case SCROLL_TO_CENTER:
 439                         new_value = CLAMP (adjustment->upper * factor - adjustment->page_size * 0.5 + 0.5,
 440                                            0, adjustment->upper - adjustment->page_size);
 441                         gtk_adjustment_set_value (adjustment, (int)new_value);
 442                         break;
 443         }
 444
 445         gtk_adjustment_changed (adjustment);
 446 }
 447
 448 static void
 449 view_update_range_and_current_page (EvView *view)
 450 {
 451         gint current_page;
 452         gint best_current_page = -1;
 453
 454         /* Presentation trumps all other modes */
 455         if (view->presentation) {
 456                 view->start_page = view->current_page;
 457                 view->end_page = view->current_page;
 458         } else if (view->continuous) {
 459                 GdkRectangle current_area, unused, page_area;
 460                 GtkBorder border;
 461                 gboolean found = FALSE;
 462                 gint area_max = -1, area;
 463                 int i;
 464
 465                 if (!(view->vadjustment && view->hadjustment))
 466                         return;
 467
 468                 current_area.x = view->hadjustment->value;
 469                 current_area.width = view->hadjustment->upper;
 470                 current_area.y = view->vadjustment->value;
 471                 current_area.height = view->vadjustment->page_size;
 472
 473                 for (i = 0; i < ev_page_cache_get_n_pages (view->page_cache); i++) {
 474
 475                         get_page_extents (view, i, &page_area, &border);
 476
 477                         if (gdk_rectangle_intersect (&current_area, &page_area, &unused)) {
 478                                 area = unused.width * unused.height;
 479
 480                                 if (!found) {
 481                                         area_max = area;
 482                                         view->start_page = i;
 483                                         found = TRUE;
 484                                         best_current_page = i;
 485                                 }
 486                                 if (area > area_max) {
 487                                         best_current_page = (area == area_max) ? MIN (i, best_current_page) : i;
 488                                         area_max = area;
 489                                 }
 490
 491                                 view->end_page = i;
 492                         } else if (found && view->current_page <= view->end_page) {
 493                                 break;
 494                         }
 495                 }
 496
 497         } else if (view->dual_page) {
 498                 if (view->current_page % 2 == ev_page_cache_get_dual_even_left (view->page_cache)) {
 499                         view->start_page = view->current_page;
 500                         if (view->current_page + 1 < ev_page_cache_get_n_pages (view->page_cache))
 501                                 view->end_page = view->start_page + 1;
 502                         else
 503                                 view->end_page = view->start_page;
 504                 } else {
 505                         if (view->current_page < 1)
 506                                 view->start_page = view->current_page;
 507                         else
 508                                 view->start_page = view->current_page - 1;
 509                         view->end_page = view->current_page;
 510                 }
 511         } else {
 512                 view->start_page = view->current_page;
 513                 view->end_page = view->current_page;
 514         }
 515
 516         best_current_page = MAX (best_current_page, view->start_page);
 517         current_page = ev_page_cache_get_current_page (view->page_cache);
 518
 519         if ((current_page != best_current_page) && (view->pending_scroll == SCROLL_TO_KEEP_POSITION)) {
 520                 view->current_page = best_current_page;
 521                 ev_page_cache_set_current_page (view->page_cache, best_current_page);
 522         }
 523
 524         ev_pixbuf_cache_set_page_range (view->pixbuf_cache,
 525                                         view->start_page,
 526                                         view->end_page,
 527                                         view->rotation,
 528                                         view->scale,
 529                                         view->selection_info.selections);
 530 }
 531
 532 static void
 533 set_scroll_adjustment (EvView *view,
 534                        GtkOrientation  orientation,
 535                        GtkAdjustment  *adjustment)
 536 {
 537         GtkAdjustment **to_set;
 538
 539         if (orientation == GTK_ORIENTATION_HORIZONTAL)
 540                 to_set = &view->hadjustment;
 541         else
 542                 to_set = &view->vadjustment;
 543
 544         if (*to_set != adjustment) {
 545                 if (*to_set) {
 546                         g_signal_handlers_disconnect_by_func (*to_set,
 547                                                               (gpointer) on_adjustment_value_changed,
 548                                                               view);
 549                         g_object_unref (*to_set);
 550                 }
 551
 552                 *to_set = adjustment;
 553                 view_set_adjustment_values (view, orientation);
 554
 555                 if (*to_set) {
 556                         g_object_ref (*to_set);
 557                         g_signal_connect (*to_set, "value_changed",
 558                                           G_CALLBACK (on_adjustment_value_changed), view);
 559                 }
 560         }
 561 }
 562
 563 static void
 564 ev_view_set_scroll_adjustments (GtkLayout      *layout,
 565                                 GtkAdjustment  *hadjustment,
 566                                 GtkAdjustment  *vadjustment)
 567 {
 568         EvView *view = EV_VIEW (layout);
 569
 570         set_scroll_adjustment (view, GTK_ORIENTATION_HORIZONTAL, hadjustment);
 571         set_scroll_adjustment (view, GTK_ORIENTATION_VERTICAL, vadjustment);
 572
 573         on_adjustment_value_changed (NULL, view);
 574 }
 575
 576 static void
 577 add_scroll_binding_keypad (GtkBindingSet  *binding_set,
 578                            guint           keyval,
 579                            GdkModifierType modifiers,
 580                            EvScrollType    scroll,
 581                            gboolean        horizontal)
 582 {
 583   guint keypad_keyval = keyval - GDK_Left + GDK_KP_Left;
 584
 585   gtk_binding_entry_add_signal (binding_set, keyval, modifiers,
 586                                 "binding_activated", 2,
 587                                 EV_TYPE_SCROLL_TYPE, scroll,
 588                                 G_TYPE_BOOLEAN, horizontal);
 589   gtk_binding_entry_add_signal (binding_set, keypad_keyval, modifiers,
 590                                 "binding_activated", 2,
 591                                 EV_TYPE_SCROLL_TYPE, scroll,
 592                                 G_TYPE_BOOLEAN, horizontal);
 593 }
 594
 595 void
 596 ev_view_scroll (EvView        *view,
 597                 EvScrollType   scroll,
 598                 gboolean horizontal)
 599 {
 600         GtkAdjustment *adjustment;
 601         double value, increment;
 602         gboolean first_page = FALSE;
 603         gboolean last_page = FALSE;
 604
 605         view->jump_to_find_result = FALSE;
 606
 607         if (view->presentation || view->sizing_mode == EV_SIZING_BEST_FIT) {
 608                 switch (scroll) {
 609                         case EV_SCROLL_PAGE_BACKWARD:
 610                         case EV_SCROLL_STEP_BACKWARD:
 611                                 ev_view_previous_page (view);
 612                                 break;
 613                         case EV_SCROLL_PAGE_FORWARD:
 614                         case EV_SCROLL_STEP_FORWARD:
 615                                 ev_view_next_page (view);
 616                                 break;
 617                         default:
 618                                 break;
 619                 }
 620                 return;
 621         }
 622
 623         /* Assign values for increment and vertical adjustment */
 624         adjustment = horizontal ? view->hadjustment : view->vadjustment;
 625         increment = adjustment->page_size * 0.75;
 626         value = adjustment->value;
 627
 628         /* Assign boolean for first and last page */
 629         if (view->current_page == 0)
 630                 first_page = TRUE;
 631         if (view->current_page == ev_page_cache_get_n_pages (view->page_cache) - 1)
 632                 last_page = TRUE;
 633
 634         switch (scroll) {
 635                 case EV_SCROLL_PAGE_BACKWARD:
 636                         /* Do not jump backwards if at the first page */
 637                         if (value == (adjustment->lower) && first_page) {
 638                                 /* Do nothing */
 639                                 /* At the top of a page, assign the upper bound limit of previous page */
 640                         } else if (value == (adjustment->lower)) {
 641                                 value = adjustment->upper - adjustment->page_size;
 642                                 ev_view_previous_page (view);
 643                                 /* Jump to the top */
 644                         } else {
 645                                 value = MAX (value - increment, adjustment->lower);
 646                         }
 647                         break;
 648                 case EV_SCROLL_PAGE_FORWARD:
 649                         /* Do not jump forward if at the last page */
 650                         if (value == (adjustment->upper - adjustment->page_size) && last_page) {
 651                                 /* Do nothing */
 652                         /* At the bottom of a page, assign the lower bound limit of next page */
 653                         } else if (value == (adjustment->upper - adjustment->page_size)) {
 654                                 value = 0;
 655                                 ev_view_next_page (view);
 656                         /* Jump to the bottom */
 657                         } else {
 658                                 value = MIN (value + increment, adjustment->upper - adjustment->page_size);
 659                         }
 660                         break;
 661                 case EV_SCROLL_STEP_BACKWARD:
 662                         value -= adjustment->step_increment;
 663                         break;
 664                 case EV_SCROLL_STEP_FORWARD:
 665                         value += adjustment->step_increment;
 666                         break;
 667                 case EV_SCROLL_STEP_DOWN:
 668                         value -= adjustment->step_increment / 10;
 669                         break;
 670                 case EV_SCROLL_STEP_UP:
 671                         value += adjustment->step_increment / 10;
 672                         break;
 673                 default:
 674                         break;
 675         }
 676
 677         value = CLAMP (value, adjustment->lower,
 678                        adjustment->upper - adjustment->page_size);
 679
 680         gtk_adjustment_set_value (adjustment, value);
 681 }
 682
 683 #define MARGIN 5
 684
 685 static void
 686 ensure_rectangle_is_visible (EvView *view, GdkRectangle *rect)
 687 {
 688         GtkWidget *widget = GTK_WIDGET (view);
 689         GtkAdjustment *adjustment;
 690         int value;
 691
 692         view->pending_scroll = SCROLL_TO_FIND_LOCATION;
 693
 694         adjustment = view->vadjustment;
 695
 696         if (rect->y < adjustment->value) {
 697                 value = MAX (adjustment->lower, rect->y - MARGIN);
 698                 gtk_adjustment_set_value (view->vadjustment, value);
 699         } else if (rect->y + rect->height >
 700                    adjustment->value + widget->allocation.height) {
 701                 value = MIN (adjustment->upper, rect->y + rect->height -
 702                              widget->allocation.height + MARGIN);
 703                 gtk_adjustment_set_value (view->vadjustment, value);
 704         }
 705
 706         adjustment = view->hadjustment;
 707
 708         if (rect->x < adjustment->value) {
 709                 value = MAX (adjustment->lower, rect->x - MARGIN);
 710                 gtk_adjustment_set_value (view->hadjustment, value);
 711         } else if (rect->x + rect->height >
 712                    adjustment->value + widget->allocation.width) {
 713                 value = MIN (adjustment->upper, rect->x + rect->width -
 714                              widget->allocation.width + MARGIN);
 715                 gtk_adjustment_set_value (view->hadjustment, value);
 716         }
 717
 718         gtk_widget_queue_resize (GTK_WIDGET (view));
 719 }
 720
 721 /*** Geometry computations ***/
 722
 723 static void
 724 compute_border (EvView *view, int width, int height, GtkBorder *border)
 725 {
 726         if (view->presentation) {
 727                 border->left = 0;
 728                 border->right = 0;
 729                 border->top = 0;
 730                 border->bottom = 0;
 731         } else {
 732                 ev_document_misc_get_page_border_size (width, height, border);
 733         }
 734 }
 735
 736 static void
 737 get_page_y_offset (EvView *view, int page, double zoom, int *y_offset)
 738 {
 739         int max_width, offset;
 740         GtkBorder border;
 741
 742         g_return_if_fail (y_offset != NULL);
 743
 744         ev_page_cache_get_max_width (view->page_cache, view->rotation, zoom, &max_width);
 745
 746         compute_border (view, max_width, max_width, &border);
 747
 748         if (view->dual_page) {
 749                 ev_page_cache_get_height_to_page (view->page_cache, page,
 750                                                   view->rotation, zoom, NULL, &offset);
 751                 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);
 752         } else {
 753                 ev_page_cache_get_height_to_page (view->page_cache, page,
 754                                                   view->rotation, zoom, &offset, NULL);
 755                 offset += (page + 1) * view->spacing + page * (border.top + border.bottom);
 756         }
 757
 758         *y_offset = offset;
 759         return;
 760 }
 761
 762 static gboolean
 763 get_page_extents (EvView       *view,
 764                   gint          page,
 765                   GdkRectangle *page_area,
 766                   GtkBorder    *border)
 767 {
 768         GtkWidget *widget;
 769         int width, height;
 770
 771         widget = GTK_WIDGET (view);
 772
 773         /* Get the size of the page */
 774         ev_page_cache_get_size (view->page_cache, page,
 775                                 view->rotation,
 776                                 view->scale,
 777                                 &width, &height);
 778         compute_border (view, width, height, border);
 779         page_area->width = width + border->left + border->right;
 780         page_area->height = height + border->top + border->bottom;
 781
 782         if (view->presentation) {
 783                 page_area->x = (MAX (0, widget->allocation.width - width))/2;
 784                 page_area->y = (MAX (0, widget->allocation.height - height))/2;
 785         } else if (view->continuous) {
 786                 gint max_width;
 787                 gint x, y;
 788
 789                 ev_page_cache_get_max_width (view->page_cache, view->rotation,
 790                                              view->scale, &max_width);
 791                 max_width = max_width + border->left + border->right;
 792                 /* Get the location of the bounding box */
 793                 if (view->dual_page) {
 794                         x = view->spacing + ((page % 2 == ev_page_cache_get_dual_even_left (view->page_cache)) ? 0 : 1) * (max_width + view->spacing);
 795                         x = x + MAX (0, widget->allocation.width - (max_width * 2 + view->spacing * 3)) / 2;
 796                         if (page % 2 == ev_page_cache_get_dual_even_left (view->page_cache))
 797                                 x = x + (max_width - width - border->left - border->right);
 798                 } else {
 799                         x = view->spacing;
 800                         x = x + MAX (0, widget->allocation.width - (width + view->spacing * 2)) / 2;
 801                 }
 802
 803                 get_page_y_offset (view, page, view->scale, &y);
 804
 805                 page_area->x = x;
 806                 page_area->y = y;
 807         } else {
 808                 gint x, y;
 809                 if (view->dual_page) {
 810                         gint width_2, height_2;
 811                         gint max_width = width;
 812                         gint max_height = height;
 813                         GtkBorder overall_border;
 814                         gint other_page;
 815
 816                         other_page = (page % 2 == ev_page_cache_get_dual_even_left (view->page_cache)) ? page + 1: page - 1;
 817
 818                         /* First, we get the bounding box of the two pages */
 819                         if (other_page < ev_page_cache_get_n_pages (view->page_cache)
 820                             && (0 <= other_page)) {
 821                                 ev_page_cache_get_size (view->page_cache,
 822                                                         other_page,
 823                                                         view->rotation,
 824                                                         view->scale,
 825                                                         &width_2, &height_2);
 826                                 if (width_2 > width)
 827                                         max_width = width_2;
 828                                 if (height_2 > height)
 829                                         max_height = height_2;
 830                         }
 831                         compute_border (view, max_width, max_height, &overall_border);
 832
 833                         /* Find the offsets */
 834                         x = view->spacing;
 835                         y = view->spacing;
 836
 837                         /* Adjust for being the left or right page */
 838                         if (page % 2 == ev_page_cache_get_dual_even_left (view->page_cache))
 839                                 x = x + max_width - width;
 840                         else
 841                                 x = x + (max_width + overall_border.left + overall_border.right) + view->spacing;
 842
 843                         y = y + (max_height - height)/2;
 844
 845                         /* Adjust for extra allocation */
 846                         x = x + MAX (0, widget->allocation.width -
 847                                      ((max_width + overall_border.left + overall_border.right) * 2 + view->spacing * 3))/2;
 848                         y = y + MAX (0, widget->allocation.height - (height + view->spacing * 2))/2;
 849                 } else {
 850                         x = view->spacing;
 851                         y = view->spacing;
 852
 853                         /* Adjust for extra allocation */
 854                         x = x + MAX (0, widget->allocation.width - (width + border->left + border->right + view->spacing * 2))/2;
 855                         y = y + MAX (0, widget->allocation.height - (height + border->top + border->bottom +  view->spacing * 2))/2;
 856                 }
 857
 858                 page_area->x = x;
 859                 page_area->y = y;
 860         }
 861
 862         return TRUE;
 863 }
 864
 865 static void
 866 view_point_to_doc_point (EvView *view,
 867                          GdkPoint *view_point,
 868                          GdkRectangle *page_area,
 869                          double  *doc_point_x,
 870                          double  *doc_point_y)
 871 {
 872         *doc_point_x = (double) (view_point->x - page_area->x) / view->scale;
 873         *doc_point_y = (double) (view_point->y - page_area->y) / view->scale;
 874 }
 875
 876 static void
 877 view_rect_to_doc_rect (EvView *view,
 878                        GdkRectangle *view_rect,
 879                        GdkRectangle *page_area,
 880                        EvRectangle  *doc_rect)
 881 {
 882         doc_rect->x1 = (double) (view_rect->x - page_area->x) / view->scale;
 883         doc_rect->y1 = (double) (view_rect->y - page_area->y) / view->scale;
 884         doc_rect->x2 = doc_rect->x1 + (double) view_rect->width / view->scale;
 885         doc_rect->y2 = doc_rect->y1 + (double) view_rect->height / view->scale;
 886 }
 887
 888 static gboolean
 889 doc_point_to_view_point (EvView       *view,
 890                          int           page,
 891                          EvPoint      *doc_point,
 892                          GdkPoint     *view_point)
 893 {
 894         GdkRectangle page_area;
 895         GtkBorder border;
 896         double x, y, view_x, view_y;
 897         int width, height;
 898
 899         ev_page_cache_get_size (view->page_cache, page,
 900                                 view->rotation,
 901                                 1.0,
 902                                 &width, &height);
 903
 904         if (view->rotation == 0) {
 905                 x = doc_point->x;
 906                 y = doc_point->y;
 907         } else if (view->rotation == 90) {
 908                 x = width - doc_point->y;
 909                 y = doc_point->x;
 910         } else if (view->rotation == 180) {
 911                 x = width - doc_point->x;
 912                 y = height - doc_point->y;
 913         } else if (view->rotation == 270) {
 914                 x = doc_point->y;
 915                 y = height - doc_point->x;
 916         } else {
 917                 g_assert_not_reached ();
 918         }
 919
 920         get_page_extents (view, page, &page_area, &border);
 921
 922         view_x = x * view->scale;
 923         view_y = y * view->scale;
 924         view_point->x = view_x + page_area.x;
 925         view_point->y = view_y + page_area.y;
 926
 927         return (view_x > 0 && view_x <= page_area.width &&
 928                 view_y > 0 && view_y <= page_area.height);
 929 }
 930
 931 static void
 932 doc_rect_to_view_rect (EvView       *view,
 933                        int           page,
 934                        EvRectangle  *doc_rect,
 935                        GdkRectangle *view_rect)
 936 {
 937         GdkRectangle page_area;
 938         GtkBorder border;
 939         double x, y, w, h;
 940         int width, height;
 941
 942         ev_page_cache_get_size (view->page_cache, page,
 943                                 view->rotation,
 944                                 1.0,
 945                                 &width, &height);
 946
 947         if (view->rotation == 0) {
 948                 x = doc_rect->x1;
 949                 y = doc_rect->y1;
 950                 w = doc_rect->x2 - doc_rect->x1;
 951                 h = doc_rect->y2 - doc_rect->y1;
 952         } else if (view->rotation == 90) {
 953                 x = width - doc_rect->y2;
 954                 y = doc_rect->x1;
 955                 w = doc_rect->y2 - doc_rect->y1;
 956                 h = doc_rect->x2 - doc_rect->x1;
 957         } else if (view->rotation == 180) {
 958                 x = width - doc_rect->x2;
 959                 y = height - doc_rect->y2;
 960                 w = doc_rect->x2 - doc_rect->x1;
 961                 h = doc_rect->y2 - doc_rect->y1;
 962         } else if (view->rotation == 270) {
 963                 x = doc_rect->y1;
 964                 y = height - doc_rect->x2;
 965                 w = doc_rect->y2 - doc_rect->y1;
 966                 h = doc_rect->x2 - doc_rect->x1;
 967         } else {
 968                 g_assert_not_reached ();
 969         }
 970
 971         get_page_extents (view, page, &page_area, &border);
 972
 973         view_rect->x = x * view->scale + page_area.x;
 974         view_rect->y = y * view->scale + page_area.y;
 975         view_rect->width = w * view->scale;
 976         view_rect->height = h * view->scale;
 977 }
 978
 979 static void
 980 find_page_at_location (EvView  *view,
 981                        gdouble  x,
 982                        gdouble  y,
 983                        gint    *page,
 984                        gint    *x_offset,
 985                        gint    *y_offset)
 986 {
 987         int i;
 988
 989         if (view->document == NULL)
 990                 return;
 991
 992         g_assert (page);
 993         g_assert (x_offset);
 994         g_assert (y_offset);
 995
 996         for (i = view->start_page; i <= view->end_page; i++) {
 997                 GdkRectangle page_area;
 998                 GtkBorder border;
 999
1000                 if (! get_page_extents (view, i, &page_area, &border))
1001                         continue;
1002
1003                 if ((x >= page_area.x + border.left) &&
1004                     (x < page_area.x + page_area.width - border.right) &&
1005                     (y >= page_area.y + border.top) &&
1006                     (y < page_area.y + page_area.height - border.bottom)) {
1007                         *page = i;
1008                         *x_offset = x - (page_area.x + border.left);
1009                         *y_offset = y - (page_area.y + border.top);
1010                         return;
1011                 }
1012         }
1013
1014         *page = -1;
1015 }
1016
1017 static gboolean
1018 location_in_text (EvView  *view,
1019                   gdouble  x,
1020                   gdouble  y)
1021 {
1022         GdkRegion *region;
1023         gint page = -1;
1024         gint x_offset = 0, y_offset = 0;
1025
1026         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1027
1028         if (page == -1)
1029                 return FALSE;
1030
1031         region = ev_pixbuf_cache_get_text_mapping (view->pixbuf_cache, page);
1032
1033         if (region)
1034                 return gdk_region_point_in (region, x_offset / view->scale, y_offset / view->scale);
1035         else
1036                 return FALSE;
1037 }
1038
1039 static int
1040 ev_view_get_width (EvView *view)
1041 {
1042         return GTK_WIDGET (view)->allocation.width;
1043 }
1044
1045 static int
1046 ev_view_get_height (EvView *view)
1047 {
1048         return GTK_WIDGET (view)->allocation.height;
1049 }
1050
1051 static gboolean
1052 location_in_selected_text (EvView  *view,
1053                            gdouble  x,
1054                            gdouble  y)
1055 {
1056         gint page = -1;
1057         gint x_offset = 0, y_offset = 0;
1058         EvViewSelection *selection;
1059         GList *l = NULL;
1060
1061         for (l = view->selection_info.selections; l != NULL; l = l->next) {
1062                 selection = (EvViewSelection *)l->data;
1063
1064                 find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1065
1066                 if (page != selection->page)
1067                         continue;
1068
1069                 if (selection->covered_region &&
1070                     gdk_region_point_in (selection->covered_region, x_offset, y_offset))
1071                         return TRUE;
1072         }
1073
1074         return FALSE;
1075 }
1076
1077 static gboolean
1078 get_doc_point_from_offset (EvView *view,
1079                            gint    page,
1080                            gint    x_offset,
1081                            gint    y_offset,
1082                            gint   *x_new,
1083                            gint   *y_new)
1084 {
1085         int width, height;
1086         double x, y;
1087
1088         ev_page_cache_get_size (view->page_cache, page,
1089                                 view->rotation,
1090                                 1.0,
1091                                 &width, &height);
1092
1093         x_offset = x_offset / view->scale;
1094         y_offset = y_offset / view->scale;
1095
1096         if (view->rotation == 0) {
1097                 x = x_offset;
1098                 y = y_offset;
1099         } else if (view->rotation == 90) {
1100                 x = y_offset;
1101                 y = width - x_offset;
1102         } else if (view->rotation == 180) {
1103                 x = width - x_offset;
1104                 y = height - y_offset;
1105         } else if (view->rotation == 270) {
1106                 x = height - y_offset;
1107                 y = x_offset;
1108         } else {
1109                 g_assert_not_reached ();
1110         }
1111
1112         *x_new = x;
1113         *y_new = y;
1114
1115         return TRUE;
1116 }
1117
1118 /*** Hyperref ***/
1119 static EvLink *
1120 ev_view_get_link_at_location (EvView  *view,
1121                               gdouble  x,
1122                               gdouble  y)
1123 {
1124         gint page = -1;
1125         gint x_offset = 0, y_offset = 0;
1126         gint x_new = 0, y_new = 0;
1127         GList *link_mapping;
1128
1129         if (!EV_IS_DOCUMENT_LINKS (view->document))
1130                 return NULL;
1131
1132         x += view->scroll_x;
1133         y += view->scroll_y;
1134
1135         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1136
1137         if (page == -1)
1138                 return NULL;
1139
1140
1141         if (get_doc_point_from_offset (view, page, x_offset,
1142                                        y_offset, &x_new, &y_new) == FALSE)
1143                 return NULL;
1144
1145         link_mapping = ev_pixbuf_cache_get_link_mapping (view->pixbuf_cache, page);
1146
1147         if (link_mapping)
1148                 return ev_link_mapping_find (link_mapping, x_new, y_new);
1149         else
1150                 return NULL;
1151 }
1152
1153 static void
1154 goto_fitr_dest (EvView *view, EvLinkDest *dest)
1155 {
1156         EvPoint doc_point;
1157         gdouble zoom, left, top;
1158         gboolean change_left, change_top;
1159
1160         left = ev_link_dest_get_left (dest, &change_left);
1161         top = ev_link_dest_get_top (dest, &change_top);
1162
1163         zoom = zoom_for_size_best_fit (ev_link_dest_get_right (dest) - left,
1164                                        ev_link_dest_get_bottom (dest) - top,
1165                                        ev_view_get_width (view),
1166                                        ev_view_get_height (view), 0, 0);
1167
1168         ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1169         ev_view_set_zoom (view, zoom, FALSE);
1170
1171         doc_point.x = change_left ? left : 0;
1172         doc_point.y = change_top ? top : 0;
1173
1174         view->current_page = ev_link_dest_get_page (dest);
1175         if (change_left || change_top)
1176                 view->pending_point = doc_point;
1177         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1178
1179         gtk_widget_queue_resize (GTK_WIDGET (view));
1180 }
1181
1182 static void
1183 goto_fitv_dest (EvView *view, EvLinkDest *dest)
1184 {
1185         EvPoint doc_point;
1186         int doc_width, doc_height, page;
1187         double zoom, left;
1188         gboolean change_left;
1189
1190         page = ev_link_dest_get_page (dest);
1191         ev_page_cache_get_size (view->page_cache, page, 0, 1.0, &doc_width, &doc_height);
1192
1193         left = ev_link_dest_get_left (dest, &change_left);
1194         doc_point.x = change_left ? left : 0;
1195         doc_point.y = 0;
1196
1197         zoom = zoom_for_size_fit_height (doc_width - doc_point.x , doc_height,
1198                                          ev_view_get_width (view),
1199                                          ev_view_get_height (view), 0);
1200
1201         ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1202         ev_view_set_zoom (view, zoom, FALSE);
1203
1204         view->current_page = page;
1205         if (change_left)
1206                 view->pending_point = doc_point;
1207         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1208
1209         gtk_widget_queue_resize (GTK_WIDGET (view));
1210 }
1211
1212 static void
1213 goto_fith_dest (EvView *view, EvLinkDest *dest)
1214 {
1215         EvPoint doc_point;
1216         int doc_width, doc_height, page;
1217         gdouble zoom, top;
1218         gboolean change_top;
1219
1220         page = ev_link_dest_get_page (dest);
1221         ev_page_cache_get_size (view->page_cache, page, 0, 1.0, &doc_width, &doc_height);
1222
1223         top = ev_link_dest_get_top (dest, &change_top);
1224
1225         doc_point.x = 0;
1226         doc_point.y = change_top ? top : 0;
1227
1228         zoom = zoom_for_size_fit_width (doc_width, top,
1229                                         ev_view_get_width (view),
1230                                         ev_view_get_height (view), 0);
1231
1232         ev_view_set_sizing_mode (view, EV_SIZING_FIT_WIDTH);
1233         ev_view_set_zoom (view, zoom, FALSE);
1234
1235         view->current_page = page;
1236         if (change_top)
1237                 view->pending_point = doc_point;
1238         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1239
1240         gtk_widget_queue_resize (GTK_WIDGET (view));
1241 }
1242
1243 static void
1244 goto_fit_dest (EvView *view, EvLinkDest *dest)
1245 {
1246         double zoom;
1247         int doc_width, doc_height;
1248         int page;
1249
1250         page = ev_link_dest_get_page (dest);
1251         ev_page_cache_get_size (view->page_cache, page, 0, 1.0, &doc_width, &doc_height);
1252
1253         zoom = zoom_for_size_best_fit (doc_width, doc_height, ev_view_get_width (view),
1254                                        ev_view_get_height (view), 0, 0);
1255
1256         ev_view_set_sizing_mode (view, EV_SIZING_BEST_FIT);
1257         ev_view_set_zoom (view, zoom, FALSE);
1258
1259         view->current_page = page;
1260         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1261
1262         gtk_widget_queue_resize (GTK_WIDGET (view));
1263 }
1264
1265 static void
1266 goto_xyz_dest (EvView *view, EvLinkDest *dest)
1267 {
1268         EvPoint doc_point;
1269         gint page;
1270         gdouble zoom, left, top;
1271         gboolean change_zoom, change_left, change_top;
1272
1273         zoom = ev_link_dest_get_zoom (dest, &change_zoom);
1274         page = ev_link_dest_get_page (dest);
1275
1276         if (change_zoom && zoom > 1) {
1277                 ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1278                 ev_view_set_zoom (view, zoom, FALSE);
1279         }
1280
1281         left = ev_link_dest_get_left (dest, &change_left);
1282         top = ev_link_dest_get_top (dest, &change_top);
1283
1284         doc_point.x = change_left ? left : 0;
1285         doc_point.y = change_top ? top : 0;
1286
1287         view->current_page = page;
1288         if (change_left || change_top)
1289                 view->pending_point = doc_point;
1290         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1291
1292         gtk_widget_queue_resize (GTK_WIDGET (view));
1293 }
1294
1295 static void
1296 goto_dest (EvView *view, EvLinkDest *dest)
1297 {
1298         EvLinkDestType type;
1299         int page, n_pages, current_page;
1300
1301         page = ev_link_dest_get_page (dest);
1302         n_pages = ev_page_cache_get_n_pages (view->page_cache);
1303
1304         if (page < 0 || page >= n_pages)
1305                 return;
1306
1307         current_page = view->current_page;
1308
1309         type = ev_link_dest_get_dest_type (dest);
1310
1311         switch (type) {
1312                 case EV_LINK_DEST_TYPE_PAGE:
1313                         ev_page_cache_set_current_page (view->page_cache, page);
1314                         break;
1315                 case EV_LINK_DEST_TYPE_FIT:
1316                         goto_fit_dest (view, dest);
1317                         break;
1318                 case EV_LINK_DEST_TYPE_FITH:
1319                         goto_fith_dest (view, dest);
1320                         break;
1321                 case EV_LINK_DEST_TYPE_FITV:
1322                         goto_fitv_dest (view, dest);
1323                         break;
1324                 case EV_LINK_DEST_TYPE_FITR:
1325                         goto_fitr_dest (view, dest);
1326                         break;
1327                 case EV_LINK_DEST_TYPE_XYZ:
1328                         goto_xyz_dest (view, dest);
1329                         break;
1330                 case EV_LINK_DEST_TYPE_PAGE_LABEL:
1331                         ev_page_cache_set_page_label (view->page_cache, ev_link_dest_get_page_label (dest));
1332                         break;
1333                 default:
1334                         g_assert_not_reached ();
1335         }
1336
1337         if (current_page != view->current_page)
1338                 ev_page_cache_set_current_page (view->page_cache,
1339                                                 view->current_page);
1340 }
1341
1342 static void
1343 ev_view_goto_dest (EvView *view, EvLinkDest *dest)
1344 {
1345         EvLinkDestType type;
1346
1347         type = ev_link_dest_get_dest_type (dest);
1348
1349         if (type == EV_LINK_DEST_TYPE_NAMED) {
1350                 EvLinkDest  *dest2;
1351                 const gchar *named_dest;
1352
1353                 named_dest = ev_link_dest_get_named_dest (dest);
1354                 dest2 = ev_document_links_find_link_dest (EV_DOCUMENT_LINKS (view->document),
1355                                                           named_dest);
1356                 if (dest2) {
1357                         goto_dest (view, dest2);
1358                         g_object_unref (dest2);
1359                 }
1360
1361                 return;
1362         }
1363
1364         goto_dest (view, dest);
1365 }
1366
1367 void
1368 ev_view_handle_link (EvView *view, EvLink *link)
1369 {
1370         EvLinkAction    *action = NULL;
1371         EvLinkActionType type;
1372
1373         action = ev_link_get_action (link);
1374         if (!action)
1375                 return;
1376
1377         type = ev_link_action_get_action_type (action);
1378
1379         switch (type) {
1380                 case EV_LINK_ACTION_TYPE_GOTO_DEST: {
1381                         EvLinkDest *dest;
1382
1383                         g_signal_emit (view, signals[SIGNAL_HANDLE_LINK], 0, link);
1384
1385                         dest = ev_link_action_get_dest (action);
1386                         ev_view_goto_dest (view, dest);
1387                 }
1388                         break;
1389                 case EV_LINK_ACTION_TYPE_GOTO_REMOTE:
1390                 case EV_LINK_ACTION_TYPE_EXTERNAL_URI:
1391                 case EV_LINK_ACTION_TYPE_LAUNCH:
1392                 case EV_LINK_ACTION_TYPE_NAMED:
1393                         g_signal_emit (view, signals[SIGNAL_EXTERNAL_LINK], 0, action);
1394                         break;
1395         }
1396 }
1397
1398 gchar *
1399 ev_view_page_label_from_dest (EvView *view, EvLinkDest *dest)
1400 {
1401         EvLinkDestType type;
1402         gchar *msg = NULL;
1403
1404         type = ev_link_dest_get_dest_type (dest);
1405
1406         switch (type) {
1407                 case EV_LINK_DEST_TYPE_NAMED: {
1408                         EvLinkDest  *dest2;
1409                         const gchar *named_dest;
1410
1411                         named_dest = ev_link_dest_get_named_dest (dest);
1412                         dest2 = ev_document_links_find_link_dest (EV_DOCUMENT_LINKS (view->document),
1413                                                                   named_dest);
1414                         if (dest2) {
1415                                 msg = ev_page_cache_get_page_label (view->page_cache,
1416                                                                     ev_link_dest_get_page (dest2));
1417                                 g_object_unref (dest2);
1418                         }
1419                 }
1420
1421                         break;
1422                 case EV_LINK_DEST_TYPE_PAGE_LABEL: {
1423                         msg = g_strdup (ev_link_dest_get_page_label (dest));
1424                 }
1425                         break;
1426                 default:
1427                         msg = ev_page_cache_get_page_label (view->page_cache,
1428                                                             ev_link_dest_get_page (dest));
1429         }
1430
1431         return msg;
1432 }
1433
1434 static char *
1435 tip_from_action_named (EvLinkAction *action)
1436 {
1437         const gchar *name = ev_link_action_get_name (action);
1438
1439         if (g_ascii_strcasecmp (name, "FirstPage") == 0) {
1440                 return g_strdup (_("Go to first page"));
1441         } else if (g_ascii_strcasecmp (name, "PrevPage") == 0) {
1442                 return g_strdup (_("Go to previous page"));
1443         } else if (g_ascii_strcasecmp (name, "NextPage") == 0) {
1444                 return g_strdup (_("Go to next page"));
1445         } else if (g_ascii_strcasecmp (name, "LastPage") == 0) {
1446                 return g_strdup (_("Go to last page"));
1447         } else if (g_ascii_strcasecmp (name, "GoToPage") == 0) {
1448                 return g_strdup (_("Go to page"));
1449         } else if (g_ascii_strcasecmp (name, "Find") == 0) {
1450                 return g_strdup (_("Find"));
1451         }
1452
1453         return NULL;
1454 }
1455
1456 static char *
1457 tip_from_link (EvView *view, EvLink *link)
1458 {
1459         EvLinkAction *action;
1460         EvLinkActionType type;
1461         char *msg = NULL;
1462         char *page_label;
1463         const char *title;
1464
1465         action = ev_link_get_action (link);
1466         title = ev_link_get_title (link);
1467
1468         if (!action)
1469                 return title ? g_strdup (title) : NULL;
1470
1471         type = ev_link_action_get_action_type (action);
1472
1473         switch (type) {
1474                 case EV_LINK_ACTION_TYPE_GOTO_DEST:
1475                         page_label = ev_view_page_label_from_dest (view,
1476                                                                    ev_link_action_get_dest (action));
1477                         if (page_label) {
1478                                 msg = g_strdup_printf (_("Go to page %s"), page_label);
1479                                 g_free (page_label);
1480                         }
1481                         break;
1482                 case EV_LINK_ACTION_TYPE_GOTO_REMOTE:
1483                         if (title) {
1484                                 msg = g_strdup_printf (_("Go to %s on file “%s”"), title,
1485                                                        ev_link_action_get_filename (action));
1486                         } else {
1487                                 msg = g_strdup_printf (_("Go to file “%s”"),
1488                                                        ev_link_action_get_filename (action));
1489                         }
1490                         break;
1491                 case EV_LINK_ACTION_TYPE_EXTERNAL_URI:
1492                         msg = g_strdup (ev_link_action_get_uri (action));
1493                         break;
1494                 case EV_LINK_ACTION_TYPE_LAUNCH:
1495                         msg = g_strdup_printf (_("Launch %s"),
1496                                                ev_link_action_get_filename (action));
1497                         break;
1498                 case EV_LINK_ACTION_TYPE_NAMED:
1499                         msg = tip_from_action_named (action);
1500                         break;
1501                 default:
1502                         if (title)
1503                                 msg = g_strdup (title);
1504                         break;
1505         }
1506
1507         return msg;
1508 }
1509
1510 static void
1511 ev_view_handle_cursor_over_xy (EvView *view, gint x, gint y)
1512 {
1513         EvLink      *link;
1514         EvFormField *field;
1515
1516         if (view->cursor == EV_VIEW_CURSOR_HIDDEN)
1517                 return;
1518
1519         if (view->drag_info.in_drag) {
1520                 if (view->cursor != EV_VIEW_CURSOR_DRAG)
1521                         ev_view_set_cursor (view, EV_VIEW_CURSOR_DRAG);
1522                 return;
1523         }
1524
1525         if (view->scroll_info.autoscrolling) {
1526                 if (view->cursor != EV_VIEW_CURSOR_AUTOSCROLL)
1527                         ev_view_set_cursor (view, EV_VIEW_CURSOR_AUTOSCROLL);
1528                 return;
1529         }
1530
1531         link = ev_view_get_link_at_location (view, x, y);
1532
1533 #if !GTK_CHECK_VERSION (2, 11, 7)
1534         if (view->link_tooltip == NULL) {
1535                 view->link_tooltip = ev_tooltip_new (GTK_WIDGET (view));
1536         }
1537
1538         if (view->hovered_link != link) {
1539                 view->hovered_link = link;
1540                 ev_tooltip_deactivate (EV_TOOLTIP (view->link_tooltip));
1541         }
1542 #endif
1543
1544         if (link) {
1545 #if GTK_CHECK_VERSION (2, 11, 7)
1546                 g_object_set (view, "has-tooltip", TRUE, NULL);
1547 #else
1548                 char *msg = tip_from_link (view, link);
1549
1550                 if (msg && g_utf8_validate (msg, -1, NULL)) {
1551                         EvTooltip *tooltip = EV_TOOLTIP (view->link_tooltip);
1552
1553                         ev_tooltip_set_position (tooltip, x, y);
1554                         ev_tooltip_set_text (tooltip, msg);
1555                         ev_tooltip_activate (tooltip);
1556                 }
1557                 g_free (msg);
1558 #endif
1559                 ev_view_set_cursor (view, EV_VIEW_CURSOR_LINK);
1560         } else if ((field = ev_view_get_form_field_at_location (view, x, y))) {
1561                 if (field->is_read_only) {
1562                         if (view->cursor == EV_VIEW_CURSOR_LINK ||
1563                             view->cursor == EV_VIEW_CURSOR_IBEAM ||
1564                             view->cursor == EV_VIEW_CURSOR_DRAG)
1565                                 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
1566                 } else if (EV_IS_FORM_FIELD_TEXT (field)) {
1567                         ev_view_set_cursor (view, EV_VIEW_CURSOR_IBEAM);
1568                 } else {
1569                         ev_view_set_cursor (view, EV_VIEW_CURSOR_LINK);
1570                 }
1571         } else if (location_in_text (view, x + view->scroll_x, y + view->scroll_y)) {
1572                 ev_view_set_cursor (view, EV_VIEW_CURSOR_IBEAM);
1573         } else {
1574                 if (view->cursor == EV_VIEW_CURSOR_LINK ||
1575                     view->cursor == EV_VIEW_CURSOR_IBEAM ||
1576                     view->cursor == EV_VIEW_CURSOR_DRAG)
1577                         ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
1578         }
1579 }
1580
1581 /*** Images ***/
1582 static EvImage *
1583 ev_view_get_image_at_location (EvView  *view,
1584                                gdouble  x,
1585                                gdouble  y)
1586 {
1587         gint page = -1;
1588         gint x_offset = 0, y_offset = 0;
1589         gint x_new = 0, y_new = 0;
1590         GList *image_mapping;
1591
1592         if (!EV_IS_DOCUMENT_IMAGES (view->document))
1593                 return NULL;
1594
1595         x += view->scroll_x;
1596         y += view->scroll_y;
1597
1598         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1599
1600         if (page == -1)
1601                 return NULL;
1602
1603         if (get_doc_point_from_offset (view, page, x_offset,
1604                                        y_offset, &x_new, &y_new) == FALSE)
1605                 return NULL;
1606
1607         image_mapping = ev_pixbuf_cache_get_image_mapping (view->pixbuf_cache, page);
1608
1609         if (image_mapping)
1610                 return ev_image_mapping_find (image_mapping, x_new, y_new);
1611         else
1612                 return NULL;
1613 }
1614
1615 /*** Forms ***/
1616 static EvFormField *
1617 ev_view_get_form_field_at_location (EvView  *view,
1618                                     gdouble  x,
1619                                     gdouble  y)
1620 {
1621         gint page = -1;
1622         gint x_offset = 0, y_offset = 0;
1623         gint x_new = 0, y_new = 0;
1624         GList *forms_mapping;
1625
1626         if (!EV_IS_DOCUMENT_FORMS (view->document))
1627                 return NULL;
1628
1629         x += view->scroll_x;
1630         y += view->scroll_y;
1631
1632         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1633
1634         if (page == -1)
1635                 return NULL;
1636
1637         if (get_doc_point_from_offset (view, page, x_offset,
1638                                        y_offset, &x_new, &y_new) == FALSE)
1639                 return NULL;
1640
1641         forms_mapping = ev_pixbuf_cache_get_form_field_mapping (view->pixbuf_cache, page);
1642
1643         if (forms_mapping)
1644                 return ev_form_field_mapping_find (forms_mapping, x_new, y_new);
1645         else
1646                 return NULL;
1647 }
1648
1649 static GdkRegion *
1650 ev_view_form_field_get_region (EvView      *view,
1651                                EvFormField *field)
1652 {
1653         EvRectangle  field_area;
1654         GdkRectangle view_area;
1655         GList       *forms_mapping;
1656
1657         forms_mapping = ev_pixbuf_cache_get_form_field_mapping (view->pixbuf_cache,
1658                                                                 field->page);
1659         ev_form_field_mapping_get_area (forms_mapping, field, &field_area);
1660         doc_rect_to_view_rect (view, field->page, &field_area, &view_area);
1661         view_area.x -= view->scroll_x;
1662         view_area.y -= view->scroll_y;
1663
1664         return gdk_region_rectangle (&view_area);
1665 }
1666
1667 static gboolean
1668 ev_view_forms_remove_widgets (EvView *view)
1669 {
1670         ev_view_remove_all (view);
1671
1672         return FALSE;
1673 }
1674
1675 static void
1676 ev_view_form_field_destroy (GtkWidget *widget,
1677                             EvView    *view)
1678 {
1679         g_idle_add ((GSourceFunc)ev_view_forms_remove_widgets, view);
1680 }
1681
1682 static GtkWidget *
1683 ev_view_form_field_button_create_widget (EvView      *view,
1684                                          EvFormField *field)
1685 {
1686         EvFormFieldButton *field_button = EV_FORM_FIELD_BUTTON (field);
1687         GdkRegion         *field_region = NULL;
1688
1689         switch (field_button->type) {
1690                 case EV_FORM_FIELD_BUTTON_PUSH:
1691                         return NULL;
1692                 case EV_FORM_FIELD_BUTTON_CHECK:
1693                 case EV_FORM_FIELD_BUTTON_RADIO: {
1694                         gboolean  state;
1695                         GList    *forms_mapping, *l;
1696
1697                         state = ev_document_forms_form_field_button_get_state (EV_DOCUMENT_FORMS (view->document),
1698                                                                                field);
1699
1700                         /* FIXME: it actually depends on NoToggleToOff flags */
1701                         if (field_button->type == EV_FORM_FIELD_BUTTON_RADIO &&
1702                             state && field_button->state)
1703                                 return NULL;
1704
1705                         field_region = ev_view_form_field_get_region (view, field);
1706
1707                         /* For radio buttons and checkbox buttons that are in a set
1708                          * we need to update also the region for the current selected item
1709                          */
1710                         forms_mapping = ev_pixbuf_cache_get_form_field_mapping (view->pixbuf_cache,
1711                                                                                 field->page);
1712                         for (l = forms_mapping; l; l = g_list_next (l)) {
1713                                 EvFormField *button = ((EvFormFieldMapping *)(l->data))->field;
1714                                 GdkRegion   *button_region;
1715
1716                                 if (button->id == field->id)
1717                                         continue;
1718
1719                                 /* FIXME: only buttons in the same group should be updated */
1720                                 if (!EV_IS_FORM_FIELD_BUTTON (button) ||
1721                                     EV_FORM_FIELD_BUTTON (button)->type != field_button->type ||
1722                                     EV_FORM_FIELD_BUTTON (button)->state != TRUE)
1723                                         continue;
1724
1725                                 button_region = ev_view_form_field_get_region (view, button);
1726                                 gdk_region_union (field_region, button_region);
1727                                 gdk_region_destroy (button_region);
1728                         }
1729
1730                         ev_document_forms_form_field_button_set_state (EV_DOCUMENT_FORMS (view->document),
1731                                                                        field, !state);
1732                         field_button->state = !state;
1733                 }
1734                         break;
1735         }
1736
1737         ev_pixbuf_cache_reload_page (view->pixbuf_cache,
1738                                      field_region,
1739                                      field->page,
1740                                      view->rotation,
1741                                      view->scale);
1742         gdk_region_destroy (field_region);
1743
1744         return NULL;
1745 }
1746
1747 static void
1748 ev_view_form_field_text_save (EvView    *view,
1749                               GtkWidget *widget)
1750 {
1751         EvFormField *field;
1752
1753         if (!view->document)
1754                 return;
1755
1756         field = g_object_get_data (G_OBJECT (widget), "form-field");
1757
1758         if (field->changed) {
1759                 EvFormFieldText *field_text = EV_FORM_FIELD_TEXT (field);
1760                 GdkRegion       *field_region;
1761
1762                 field_region = ev_view_form_field_get_region (view, field);
1763
1764                 ev_document_forms_form_field_text_set_text (EV_DOCUMENT_FORMS (view->document),
1765                                                             field, field_text->text);
1766                 field->changed = FALSE;
1767                 ev_pixbuf_cache_reload_page (view->pixbuf_cache,
1768                                              field_region,
1769                                              field->page,
1770                                              view->rotation,
1771                                              view->scale);
1772                 gdk_region_destroy (field_region);
1773         }
1774 }
1775
1776 static void
1777 ev_view_form_field_text_changed (GtkWidget   *widget,
1778                                  EvFormField *field)
1779 {
1780         EvFormFieldText *field_text = EV_FORM_FIELD_TEXT (field);
1781         gchar           *text = NULL;
1782
1783         if (GTK_IS_ENTRY (widget)) {
1784                 text = g_strdup (gtk_entry_get_text (GTK_ENTRY (widget)));
1785         } else if (GTK_IS_TEXT_BUFFER (widget)) {
1786                 GtkTextIter start, end;
1787
1788                 gtk_text_buffer_get_bounds (GTK_TEXT_BUFFER (widget), &start, &end);
1789                 text = gtk_text_buffer_get_text (GTK_TEXT_BUFFER (widget),
1790                                                  &start, &end, FALSE);
1791         }
1792
1793         if (!field_text->text ||
1794             (field_text->text && g_ascii_strcasecmp (field_text->text, text) != 0)) {
1795                 g_free (field_text->text);
1796                 field_text->text = text;
1797                 field->changed = TRUE;
1798         }
1799 }
1800
1801 static GtkWidget *
1802 ev_view_form_field_text_create_widget (EvView      *view,
1803                                        EvFormField *field)
1804 {
1805         EvFormFieldText *field_text = EV_FORM_FIELD_TEXT (field);
1806         GtkWidget       *text = NULL;
1807         gchar           *txt;
1808
1809         txt = ev_document_forms_form_field_text_get_text (EV_DOCUMENT_FORMS (view->document),
1810                                                           field);
1811
1812         switch (field_text->type) {
1813                 case EV_FORM_FIELD_TEXT_FILE_SELECT:
1814                         /* TODO */
1815                 case EV_FORM_FIELD_TEXT_NORMAL:
1816                         text = gtk_entry_new ();
1817                         gtk_entry_set_has_frame (GTK_ENTRY (text), FALSE);
1818                         gtk_entry_set_max_length (GTK_ENTRY (text), field_text->max_len);
1819                         gtk_entry_set_visibility (GTK_ENTRY (text), !field_text->is_password);
1820
1821                         if (txt) {
1822                                 gtk_entry_set_text (GTK_ENTRY (text), txt);
1823                                 g_free (txt);
1824                         }
1825
1826                         g_signal_connect (G_OBJECT (text), "changed",
1827                                           G_CALLBACK (ev_view_form_field_text_changed),
1828                                           field);
1829                         g_signal_connect_after (G_OBJECT (text), "activate",
1830                                                 G_CALLBACK (ev_view_form_field_destroy),
1831                                                 view);
1832                         break;
1833                 case EV_FORM_FIELD_TEXT_MULTILINE: {
1834                         GtkTextBuffer *buffer;
1835
1836                         text = gtk_text_view_new ();
1837                         buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (text));
1838
1839                         if (txt) {
1840                                 gtk_text_buffer_set_text (buffer, txt, -1);
1841                                 g_free (txt);
1842                         }
1843
1844                         g_signal_connect (G_OBJECT (buffer), "changed",
1845                                           G_CALLBACK (ev_view_form_field_text_changed),
1846                                           field);
1847                 }
1848                         break;
1849         }
1850
1851         g_object_weak_ref (G_OBJECT (text),
1852                            (GWeakNotify)ev_view_form_field_text_save,
1853                            view);
1854
1855         return text;
1856 }
1857
1858 static void
1859 ev_view_form_field_choice_save (EvView    *view,
1860                                 GtkWidget *widget)
1861 {
1862         EvFormField *field;
1863
1864         if (!view->document)
1865                 return;
1866
1867         field = g_object_get_data (G_OBJECT (widget), "form-field");
1868
1869         if (field->changed) {
1870                 GList             *l;
1871                 EvFormFieldChoice *field_choice = EV_FORM_FIELD_CHOICE (field);
1872                 GdkRegion         *field_region;
1873
1874                 field_region = ev_view_form_field_get_region (view, field);
1875
1876                 if (field_choice->is_editable) {
1877                         ev_document_forms_form_field_choice_set_text (EV_DOCUMENT_FORMS (view->document),
1878                                                                       field, field_choice->text);
1879                 } else {
1880                         ev_document_forms_form_field_choice_unselect_all (EV_DOCUMENT_FORMS (view->document), field);
1881                         for (l = field_choice->selected_items; l; l = g_list_next (l)) {
1882                                 ev_document_forms_form_field_choice_select_item (EV_DOCUMENT_FORMS (view->document),
1883                                                                                  field,
1884                                                                                  GPOINTER_TO_INT (l->data));
1885                         }
1886                 }
1887                 field->changed = FALSE;
1888                 ev_pixbuf_cache_reload_page (view->pixbuf_cache,
1889                                              field_region,
1890                                              field->page,
1891                                              view->rotation,
1892                                              view->scale);
1893                 gdk_region_destroy (field_region);
1894         }
1895 }
1896
1897 static void
1898 ev_view_form_field_choice_changed (GtkWidget   *widget,
1899                                    EvFormField *field)
1900 {
1901         EvFormFieldChoice *field_choice = EV_FORM_FIELD_CHOICE (field);
1902
1903         if (GTK_IS_COMBO_BOX (widget)) {
1904                 gint item;
1905
1906                 item = gtk_combo_box_get_active (GTK_COMBO_BOX (widget));
1907                 if (GPOINTER_TO_INT (field_choice->selected_items->data) != item) {
1908                         g_list_free (field_choice->selected_items);
1909                         field_choice->selected_items = NULL;
1910                         field_choice->selected_items = g_list_prepend (field_choice->selected_items,
1911                                                                        GINT_TO_POINTER (item));
1912                         field->changed = TRUE;
1913                 }
1914
1915                 if (GTK_IS_COMBO_BOX_ENTRY (widget)) {
1916                         gchar *text;
1917
1918                         text = gtk_combo_box_get_active_text (GTK_COMBO_BOX (widget));
1919                         if (!field_choice->text ||
1920                             (field_choice->text && g_ascii_strcasecmp (field_choice->text, text) != 0)) {
1921                                 g_free (field_choice->text);
1922                                 field_choice->text = text;
1923                                 field->changed = TRUE;
1924                         }
1925                 }
1926         } else if (GTK_IS_TREE_SELECTION (widget)) {
1927                 GtkTreeSelection *selection = GTK_TREE_SELECTION (widget);
1928                 GtkTreeModel     *model;
1929                 GList            *items, *l;
1930
1931                 items = gtk_tree_selection_get_selected_rows (selection, &model);
1932                 g_list_free (field_choice->selected_items);
1933                 field_choice->selected_items = NULL;
1934
1935                 for (l = items; l && l->data; l = g_list_next (l)) {
1936                         GtkTreeIter  iter;
1937                         GtkTreePath *path = (GtkTreePath *)l->data;
1938                         gint         item;
1939
1940                         gtk_tree_model_get_iter (model, &iter, path);
1941                         gtk_tree_model_get (model, &iter, 1, &item, -1);
1942
1943                         field_choice->selected_items = g_list_prepend (field_choice->selected_items,
1944                                                                        GINT_TO_POINTER (item));
1945
1946                         gtk_tree_path_free (path);
1947                 }
1948
1949                 g_list_free (items);
1950
1951                 field->changed = TRUE;
1952         }
1953 }
1954
1955 static GtkWidget *
1956 ev_view_form_field_choice_create_widget (EvView      *view,
1957                                          EvFormField *field)
1958 {
1959         EvFormFieldChoice *field_choice = EV_FORM_FIELD_CHOICE (field);
1960         GtkWidget         *choice;
1961         GtkTreeModel      *model;
1962         gint               n_items, i;
1963         gint               selected_item = 0;
1964
1965         n_items = ev_document_forms_form_field_choice_get_n_items (EV_DOCUMENT_FORMS (view->document),
1966                                                                    field);
1967         model = GTK_TREE_MODEL (gtk_list_store_new (2, G_TYPE_STRING, G_TYPE_INT));
1968         for (i = 0; i < n_items; i++) {
1969                 GtkTreeIter iter;
1970                 gchar      *item;
1971
1972                 item = ev_document_forms_form_field_choice_get_item (EV_DOCUMENT_FORMS (view->document),
1973                                                                      field, i);
1974                 if (ev_document_forms_form_field_choice_is_item_selected (
1975                             EV_DOCUMENT_FORMS (view->document), field, i)) {
1976                         selected_item = i;
1977                         /* FIXME: we need a get_selected_items function in poppler */
1978                         field_choice->selected_items = g_list_prepend (field_choice->selected_items,
1979                                                                        GINT_TO_POINTER (i));
1980                 }
1981
1982                 if (item) {
1983                         gtk_list_store_append (GTK_LIST_STORE (model), &iter);
1984                         gtk_list_store_set (GTK_LIST_STORE (model), &iter,
1985                                             0, item,
1986                                             1, i,
1987                                             -1);
1988                         g_free (item);
1989                 }
1990         }
1991
1992         if (field_choice->type == EV_FORM_FIELD_CHOICE_LIST) {
1993                 GtkCellRenderer  *renderer;
1994                 GtkWidget        *tree_view;
1995                 GtkTreeSelection *selection;
1996
1997                 tree_view = gtk_tree_view_new_with_model (model);
1998                 gtk_tree_view_set_headers_visible (GTK_TREE_VIEW (tree_view), FALSE);
1999
2000                 selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (tree_view));
2001                 if (field_choice->multi_select) {
2002                         gtk_tree_selection_set_mode (selection, GTK_SELECTION_MULTIPLE);
2003                 }
2004
2005                 /* TODO: set selected items */
2006
2007                 renderer = gtk_cell_renderer_text_new ();
2008                 gtk_tree_view_insert_column_with_attributes (GTK_TREE_VIEW (tree_view),
2009                                                              0,
2010                                                              "choix", renderer,
2011                                                              "text", 0,
2012                                                              NULL);
2013
2014                 choice = gtk_scrolled_window_new (NULL, NULL);
2015                 gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (choice),
2016                                                 GTK_POLICY_AUTOMATIC,
2017                                                 GTK_POLICY_AUTOMATIC);
2018                 gtk_container_add (GTK_CONTAINER (choice), tree_view);
2019                 gtk_widget_show (tree_view);
2020
2021                 g_signal_connect (G_OBJECT (selection), "changed",
2022                                   G_CALLBACK (ev_view_form_field_choice_changed),
2023                                   field);
2024                 g_signal_connect_after (G_OBJECT (selection), "changed",
2025                                         G_CALLBACK (ev_view_form_field_destroy),
2026                                         view);
2027         } else if (field_choice->is_editable) { /* ComboBoxEntry */
2028                 gchar *text;
2029
2030                 choice = gtk_combo_box_entry_new_with_model (model, 0);
2031                 text = ev_document_forms_form_field_choice_get_text (EV_DOCUMENT_FORMS (view->document), field);
2032                 if (text) {
2033                         gtk_entry_set_text (GTK_ENTRY (gtk_bin_get_child (GTK_BIN (choice))), text);
2034                         g_free (text);
2035                 }
2036
2037                 g_signal_connect (G_OBJECT (choice), "changed",
2038                                   G_CALLBACK (ev_view_form_field_choice_changed),
2039                                   field);
2040                 g_signal_connect_after (G_OBJECT (GTK_BIN (choice)->child), "activate",
2041                                         G_CALLBACK (ev_view_form_field_destroy),
2042                                         view);
2043         } else { /* ComboBoxText */
2044                 GtkCellRenderer *renderer;
2045
2046                 choice = gtk_combo_box_new_with_model (model);
2047                 renderer = gtk_cell_renderer_text_new ();
2048                 gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (choice),
2049                                             renderer, TRUE);
2050                 gtk_cell_layout_set_attributes (GTK_CELL_LAYOUT (choice),
2051                                                 renderer,
2052                                                 "text", 0,
2053                                                 NULL);
2054                 gtk_combo_box_set_active (GTK_COMBO_BOX (choice), selected_item);
2055                 gtk_combo_box_popup (GTK_COMBO_BOX (choice));
2056
2057                 g_signal_connect (G_OBJECT (choice), "changed",
2058                                   G_CALLBACK (ev_view_form_field_choice_changed),
2059                                   field);
2060                 g_signal_connect_after (G_OBJECT (choice), "changed",
2061                                         G_CALLBACK (ev_view_form_field_destroy),
2062                                         view);
2063         }
2064
2065         g_object_unref (model);
2066
2067         g_object_weak_ref (G_OBJECT (choice),
2068                            (GWeakNotify)ev_view_form_field_choice_save,
2069                            view);
2070
2071         return choice;
2072 }
2073
2074 static void
2075 ev_view_handle_form_field (EvView      *view,
2076                            EvFormField *field,
2077                            gdouble      x,
2078                            gdouble      y)
2079 {
2080         GtkWidget   *field_widget = NULL;
2081         GList       *form_field_mapping;
2082         EvRectangle  field_area;
2083         GdkRectangle view_area;
2084
2085         if (field->is_read_only)
2086                 return;
2087
2088         if (EV_IS_FORM_FIELD_BUTTON (field)) {
2089                 field_widget = ev_view_form_field_button_create_widget (view, field);
2090         } else if (EV_IS_FORM_FIELD_TEXT (field)) {
2091                 field_widget = ev_view_form_field_text_create_widget (view, field);
2092         } else if (EV_IS_FORM_FIELD_CHOICE (field)) {
2093                 field_widget = ev_view_form_field_choice_create_widget (view, field);
2094         } else if (EV_IS_FORM_FIELD_SIGNATURE (field)) {
2095                 /* TODO */
2096         }
2097
2098         /* Form field doesn't require a widget */
2099         if (!field_widget)
2100                 return;
2101
2102         g_object_set_data_full (G_OBJECT (field_widget), "form-field",
2103                                 g_object_ref (field),
2104                                 (GDestroyNotify)g_object_unref);
2105
2106         form_field_mapping = ev_pixbuf_cache_get_form_field_mapping (view->pixbuf_cache, field->page);
2107         ev_form_field_mapping_get_area (form_field_mapping, field, &field_area);
2108
2109         doc_rect_to_view_rect (view, field->page, &field_area, &view_area);
2110         view_area.x -= view->scroll_x;
2111         view_area.y -= view->scroll_y;
2112
2113         gtk_layout_put (GTK_LAYOUT (view), field_widget, view_area.x, view_area.y);
2114         gtk_widget_show (field_widget);
2115         gtk_widget_grab_focus (field_widget);
2116 }
2117
2118 /*** GtkWidget implementation ***/
2119
2120 static void
2121 ev_view_size_request_continuous_dual_page (EvView         *view,
2122                                            GtkRequisition *requisition)
2123 {
2124         int max_width;
2125         gint n_pages;
2126         GtkBorder border;
2127
2128         ev_page_cache_get_max_width (view->page_cache, view->rotation,
2129                                      view->scale, &max_width);
2130         compute_border (view, max_width, max_width, &border);
2131
2132         n_pages = ev_page_cache_get_n_pages (view->page_cache) + 1;
2133
2134         requisition->width = (max_width + border.left + border.right) * 2 + (view->spacing * 3);
2135         get_page_y_offset (view, n_pages, view->scale, &requisition->height);
2136
2137         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
2138                 requisition->width = 1;
2139         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
2140                 requisition->width = 1;
2141                 /* FIXME: This could actually be set on one page docs or docs
2142                  * with a strange aspect ratio. */
2143                 /* requisition->height = 1;*/
2144         }
2145 }
2146
2147 static void
2148 ev_view_size_request_continuous (EvView         *view,
2149                                  GtkRequisition *requisition)
2150 {
2151         int max_width;
2152         int n_pages;
2153         GtkBorder border;
2154
2155
2156         ev_page_cache_get_max_width (view->page_cache, view->rotation,
2157                                      view->scale, &max_width);
2158         n_pages = ev_page_cache_get_n_pages (view->page_cache);
2159         compute_border (view, max_width, max_width, &border);
2160
2161         requisition->width = max_width + (view->spacing * 2) + border.left + border.right;
2162         get_page_y_offset (view, n_pages, view->scale, &requisition->height);
2163
2164         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
2165                 requisition->width = 1;
2166         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
2167                 requisition->width = 1;
2168                 /* FIXME: This could actually be set on one page docs or docs
2169                  * with a strange aspect ratio. */
2170                 /* requisition->height = 1;*/
2171         }
2172 }
2173
2174 static void
2175 ev_view_size_request_dual_page (EvView         *view,
2176                                 GtkRequisition *requisition)
2177 {
2178         GtkBorder border;
2179         gint width, height;
2180
2181         /* Find the largest of the two. */
2182         ev_page_cache_get_size (view->page_cache,
2183                                 view->current_page,
2184                                 view->rotation,
2185                                 view->scale,
2186                                 &width, &height);
2187         if (view->current_page + 1 < ev_page_cache_get_n_pages (view->page_cache)) {
2188                 gint width_2, height_2;
2189                 ev_page_cache_get_size (view->page_cache,
2190                                         view->current_page + 1,
2191                                         view->rotation,
2192                                         view->scale,
2193                                         &width_2, &height_2);
2194                 if (width_2 > width) {
2195                         width = width_2;
2196                         height = height_2;
2197                 }
2198         }
2199         compute_border (view, width, height, &border);
2200
2201         requisition->width = ((width + border.left + border.right) * 2) +
2202                 (view->spacing * 3);
2203         requisition->height = (height + border.top + border.bottom) +
2204                 (view->spacing * 2);
2205
2206         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
2207                 requisition->width = 1;
2208         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
2209                 requisition->width = 1;
2210                 requisition->height = 1;
2211         }
2212 }
2213
2214 static void
2215 ev_view_size_request_single_page (EvView         *view,
2216                                   GtkRequisition *requisition)
2217 {
2218         GtkBorder border;
2219         gint width, height;
2220
2221         ev_page_cache_get_size (view->page_cache,
2222                                 view->current_page,
2223                                 view->rotation,
2224                                 view->scale,
2225                                 &width, &height);
2226         compute_border (view, width, height, &border);
2227
2228         requisition->width = width + border.left + border.right + (2 * view->spacing);
2229         requisition->height = height + border.top + border.bottom + (2 * view->spacing);
2230
2231         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
2232                 requisition->width = 1;
2233                 requisition->height = height + border.top + border.bottom + (2 * view->spacing);
2234         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
2235                 requisition->width = 1;
2236                 requisition->height = 1;
2237         }
2238 }
2239
2240 static void
2241 ev_view_size_request (GtkWidget      *widget,
2242                       GtkRequisition *requisition)
2243 {
2244         EvView *view = EV_VIEW (widget);
2245
2246         if (view->document == NULL) {
2247                 requisition->width = 1;
2248                 requisition->height = 1;
2249                 return;
2250         }
2251
2252         if (view->presentation) {
2253                 requisition->width = 1;
2254                 requisition->height = 1;
2255                 return;
2256         }
2257
2258         if (view->continuous && view->dual_page)
2259                 ev_view_size_request_continuous_dual_page (view, requisition);
2260         else if (view->continuous)
2261                 ev_view_size_request_continuous (view, requisition);
2262         else if (view->dual_page)
2263                 ev_view_size_request_dual_page (view, requisition);
2264         else
2265                 ev_view_size_request_single_page (view, requisition);
2266 }
2267
2268 static void
2269 ev_view_size_allocate (GtkWidget      *widget,
2270                        GtkAllocation  *allocation)
2271 {
2272         EvView *view = EV_VIEW (widget);
2273         GList  *children, *l;
2274
2275         GTK_WIDGET_CLASS (ev_view_parent_class)->size_allocate (widget, allocation);
2276
2277         if (view->sizing_mode == EV_SIZING_FIT_WIDTH ||
2278             view->sizing_mode == EV_SIZING_BEST_FIT) {
2279
2280                 g_signal_emit (view, signals[SIGNAL_ZOOM_INVALID], 0);
2281
2282                 ev_view_size_request (widget, &widget->requisition);
2283         }
2284
2285         view_set_adjustment_values (view, GTK_ORIENTATION_HORIZONTAL);
2286         view_set_adjustment_values (view, GTK_ORIENTATION_VERTICAL);
2287
2288         if (view->document)
2289                 view_update_range_and_current_page (view);
2290
2291         view->pending_scroll = SCROLL_TO_KEEP_POSITION;
2292         view->pending_resize = FALSE;
2293
2294         children = gtk_container_get_children (GTK_CONTAINER (widget));
2295         for (l = children; l && l->data; l = g_list_next (l)) {
2296                 EvFormField   *field;
2297                 EvRectangle    field_area;
2298                 GdkRectangle   view_area;
2299                 GList         *form_field_mapping;
2300                 GtkAllocation  child_allocation;
2301                 GtkRequisition child_requisition;
2302                 GtkWidget     *child = (GtkWidget *)l->data;
2303
2304                 field = g_object_get_data (G_OBJECT (child), "form-field");
2305                 if (!field)
2306                         continue;
2307
2308                 form_field_mapping = ev_pixbuf_cache_get_form_field_mapping (view->pixbuf_cache,
2309                                                                              field->page);
2310                 ev_form_field_mapping_get_area (form_field_mapping, field, &field_area);
2311
2312                 doc_rect_to_view_rect (view, field->page, &field_area, &view_area);
2313                 view_area.x -= view->scroll_x;
2314                 view_area.y -= view->scroll_y;
2315
2316                 gtk_widget_size_request (child, &child_requisition);
2317                 if (child_requisition.width != view_area.width ||
2318                     child_requisition.height != view_area.height)
2319                         gtk_widget_set_size_request (child, view_area.width, view_area.height);
2320
2321                 gtk_container_child_get (GTK_CONTAINER (widget),
2322                                          child,
2323                                          "x", &child_allocation.x,
2324                                          "y", &child_allocation.y,
2325                                          NULL);
2326                 if (child_allocation.x != view_area.x ||
2327                     child_allocation.y != view_area.y) {
2328                         gtk_layout_move (GTK_LAYOUT (widget), child, view_area.x, view_area.y);
2329                 }
2330         }
2331         g_list_free (children);
2332 }
2333
2334 static void
2335 ev_view_realize (GtkWidget *widget)
2336 {
2337         EvView *view = EV_VIEW (widget);
2338
2339         if (GTK_WIDGET_CLASS (ev_view_parent_class)->realize)
2340                 (* GTK_WIDGET_CLASS (ev_view_parent_class)->realize) (widget);
2341
2342         gdk_window_set_events (view->layout.bin_window,
2343                                (gdk_window_get_events (view->layout.bin_window) |
2344                                 GDK_EXPOSURE_MASK |
2345                                 GDK_BUTTON_PRESS_MASK |
2346                                 GDK_BUTTON_RELEASE_MASK |
2347                                 GDK_SCROLL_MASK |
2348                                 GDK_KEY_PRESS_MASK |
2349                                 GDK_POINTER_MOTION_MASK |
2350                                 GDK_POINTER_MOTION_HINT_MASK |
2351                                 GDK_ENTER_NOTIFY_MASK |
2352                                 GDK_LEAVE_NOTIFY_MASK));
2353
2354         if (view->presentation)
2355                 gdk_window_set_background (view->layout.bin_window, &widget->style->black);
2356         else
2357                 gdk_window_set_background (view->layout.bin_window, &widget->style->mid [GTK_STATE_NORMAL]);
2358 }
2359
2360 static gboolean
2361 ev_view_scroll_event (GtkWidget *widget, GdkEventScroll *event)
2362 {
2363         EvView *view = EV_VIEW (widget);
2364         guint state;
2365
2366         state = event->state & gtk_accelerator_get_default_mod_mask ();
2367
2368         if (state == GDK_CONTROL_MASK && view->presentation == FALSE) {
2369                 ev_view_set_sizing_mode (view, EV_SIZING_FREE);
2370
2371                 if (event->direction == GDK_SCROLL_UP ||
2372                     event->direction == GDK_SCROLL_LEFT) {
2373                         if (ev_view_can_zoom_in (view)) {
2374                                 ev_view_zoom_in (view);
2375                         }
2376                 } else {
2377                         if (ev_view_can_zoom_out (view)) {
2378                                 ev_view_zoom_out (view);
2379                         }
2380                 }
2381
2382                 return TRUE;
2383         }
2384
2385         view->jump_to_find_result = FALSE;
2386         /* Shift+Wheel scrolls the in the perpendicular direction */
2387         if (state & GDK_SHIFT_MASK) {
2388                 if (event->direction == GDK_SCROLL_UP)
2389                         event->direction = GDK_SCROLL_LEFT;
2390                 if (event->direction == GDK_SCROLL_LEFT)
2391                         event->direction = GDK_SCROLL_UP;
2392                 if (event->direction == GDK_SCROLL_DOWN)
2393                         event->direction = GDK_SCROLL_RIGHT;
2394                 if (event->direction == GDK_SCROLL_RIGHT)
2395                         event->direction = GDK_SCROLL_DOWN;
2396
2397                 event->state &= ~GDK_SHIFT_MASK;
2398                 state &= ~GDK_SHIFT_MASK;
2399         }
2400
2401         if (state == 0 && view->presentation) {
2402                 switch (event->direction) {
2403                         case GDK_SCROLL_DOWN:
2404                         case GDK_SCROLL_RIGHT:
2405                                 ev_view_next_page (view);
2406                                 break;
2407                         case GDK_SCROLL_UP:
2408                         case GDK_SCROLL_LEFT:
2409                                 ev_view_previous_page (view);
2410                                 break;
2411                 }
2412
2413                 return TRUE;
2414         }
2415
2416         return FALSE;
2417 }
2418
2419 static EvViewSelection *
2420 find_selection_for_page (EvView *view,
2421                          gint    page)
2422 {
2423         GList *list;
2424
2425         for (list = view->selection_info.selections; list != NULL; list = list->next) {
2426                 EvViewSelection *selection;
2427
2428                 selection = (EvViewSelection *) list->data;
2429
2430                 if (selection->page == page)
2431                         return selection;
2432         }
2433
2434         return NULL;
2435 }
2436
2437 static void
2438 draw_end_presentation_page (EvView       *view,
2439                             GdkRectangle *page_area)
2440 {
2441         PangoLayout *layout;
2442         PangoFontDescription *font_desc;
2443         gchar *markup;
2444         const gchar *text = _("End of presentation. Press Escape to exit.");
2445
2446         if (view->presentation_state != EV_PRESENTATION_END)
2447                 return;
2448
2449         layout = gtk_widget_create_pango_layout (GTK_WIDGET (view), NULL);
2450         markup = g_strdup_printf ("<span foreground=\"white\">%s</span>", text);
2451         pango_layout_set_markup (layout, markup, -1);
2452         g_free (markup);
2453
2454         font_desc = pango_font_description_new ();
2455         pango_font_description_set_size (font_desc, 16 * PANGO_SCALE);
2456         pango_layout_set_font_description (layout, font_desc);
2457
2458         gtk_paint_layout (GTK_WIDGET (view)->style,
2459                           view->layout.bin_window,
2460                           GTK_WIDGET_STATE (view),
2461                           FALSE,
2462                           page_area,
2463                           GTK_WIDGET (view),
2464                           NULL,
2465                           page_area->x + 15,
2466                           page_area->y + 15,
2467                           layout);
2468
2469         pango_font_description_free (font_desc);
2470         g_object_unref (layout);
2471 }
2472
2473 static gboolean
2474 ev_view_expose_event (GtkWidget      *widget,
2475                       GdkEventExpose *event)
2476 {
2477         EvView  *view = EV_VIEW (widget);
2478         cairo_t *cr;
2479         gint     i;
2480
2481         if (view->presentation) {
2482                 switch (view->presentation_state) {
2483                         case EV_PRESENTATION_END: {
2484                                 GdkRectangle area = {0};
2485
2486                                 area.width = widget->allocation.width;
2487                                 area.height = widget->allocation.height;
2488
2489                                 draw_end_presentation_page (view, &area);
2490                         }
2491                                 return FALSE;
2492                         case EV_PRESENTATION_BLACK:
2493                         case EV_PRESENTATION_WHITE:
2494                                 return FALSE;
2495                         case EV_PRESENTATION_NORMAL:
2496                         default:
2497                                 break;
2498                 }
2499         } else if (view->loading) {
2500                 GdkRectangle area = {0};
2501
2502                 area.width = widget->allocation.width;
2503                 area.height = widget->allocation.height;
2504
2505                 draw_loading_text (view,
2506                                    &area,
2507                                    &(event->area));
2508         }
2509
2510         if (view->document == NULL)
2511                 return FALSE;
2512
2513         cr = gdk_cairo_create (view->layout.bin_window);
2514
2515         for (i = view->start_page; i <= view->end_page; i++) {
2516                 GdkRectangle page_area;
2517                 GtkBorder border;
2518                 gboolean page_ready = TRUE;
2519
2520                 if (!get_page_extents (view, i, &page_area, &border))
2521                         continue;
2522
2523                 page_area.x -= view->scroll_x;
2524                 page_area.y -= view->scroll_y;
2525
2526                 draw_one_page (view, i, cr, &page_area, &border, &(event->area), &page_ready);
2527
2528                 if (page_ready && EV_IS_DOCUMENT_FIND (view->document) && view->highlight_find_results)
2529                         highlight_find_results (view, i);
2530         }
2531
2532         cairo_destroy (cr);
2533
2534         if (GTK_WIDGET_CLASS (ev_view_parent_class)->expose_event)
2535                 (* GTK_WIDGET_CLASS (ev_view_parent_class)->expose_event) (widget, event);
2536
2537         return FALSE;
2538 }
2539
2540 static gboolean
2541 ev_view_do_popup_menu (EvView *view,
2542                        gdouble x,
2543                        gdouble y)
2544 {
2545         EvLink  *link;
2546         EvImage *image;
2547
2548         image = ev_view_get_image_at_location (view, x, y);
2549         if (image) {
2550                 g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, image);
2551                 return TRUE;
2552         }
2553
2554         link = ev_view_get_link_at_location (view, x, y);
2555         if (link) {
2556                 g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, link);
2557                 return TRUE;
2558         }
2559
2560         g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, NULL);
2561
2562         return TRUE;
2563 }
2564
2565 static gboolean
2566 ev_view_popup_menu (GtkWidget *widget)
2567 {
2568         gint x, y;
2569
2570         gtk_widget_get_pointer (widget, &x, &y);
2571         return ev_view_do_popup_menu (EV_VIEW (widget), x, y);
2572 }
2573
2574 #if GTK_CHECK_VERSION (2, 11, 7)
2575 static void
2576 get_link_area (EvView       *view,
2577                gint          x,
2578                gint          y,
2579                EvLink       *link,
2580                GdkRectangle *area)
2581 {
2582         EvRectangle  ev_rect;
2583         GList       *link_mapping;
2584         gint         page;
2585         gint         x_offset = 0, y_offset = 0;
2586
2587         x += view->scroll_x;
2588         y += view->scroll_y;
2589
2590         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
2591
2592         link_mapping = ev_pixbuf_cache_get_link_mapping (view->pixbuf_cache, page);
2593         ev_link_mapping_get_area (link_mapping, link, &ev_rect);
2594
2595         doc_rect_to_view_rect (view, page, &ev_rect, area);
2596         area->y -= view->scroll_y ;
2597 }
2598
2599 static gboolean
2600 ev_view_query_tooltip (GtkWidget         *widget,
2601                        gint               x,
2602                        gint               y,
2603                        gboolean           keyboard_tip,
2604                        GtkTooltip        *tooltip)
2605 {
2606         EvView *view = EV_VIEW (widget);
2607         EvLink *link;
2608         gchar  *text;
2609
2610         link = ev_view_get_link_at_location (view, x, y);
2611         if (!link)
2612                 return FALSE;
2613
2614         text = tip_from_link (view, link);
2615         if (text && g_utf8_validate (text, -1, NULL)) {
2616                 GdkRectangle link_area;
2617
2618                 get_link_area (view, x, y, link, &link_area);
2619                 gtk_tooltip_set_text (tooltip, text);
2620                 gtk_tooltip_set_tip_area (tooltip, &link_area);
2621         }
2622         g_free (text);
2623
2624         return TRUE;
2625 }
2626 #endif /* GTK_CHECK_VERSION (2, 11, 7) */
2627
2628 static void
2629 start_selection_for_event (EvView         *view,
2630                            GdkEventButton *event)
2631 {
2632         EvSelectionStyle style;
2633
2634         clear_selection (view);
2635
2636         view->selection_info.start.x = event->x + view->scroll_x;
2637         view->selection_info.start.y = event->y + view->scroll_y;
2638
2639         switch (event->type) {
2640                 case GDK_2BUTTON_PRESS:
2641                         style = EV_SELECTION_STYLE_WORD;
2642                         break;
2643                 case GDK_3BUTTON_PRESS:
2644                         style = EV_SELECTION_STYLE_LINE;
2645                         break;
2646                 default:
2647                         style = EV_SELECTION_STYLE_GLYPH;
2648                         break;
2649         }
2650
2651         view->selection_info.style = style;
2652 }
2653
2654 static gboolean
2655 ev_view_button_press_event (GtkWidget      *widget,
2656                             GdkEventButton *event)
2657 {
2658         EvView *view = EV_VIEW (widget);
2659
2660         if (!view->document)
2661                 return FALSE;
2662
2663         if (!GTK_WIDGET_HAS_FOCUS (widget)) {
2664                 gtk_widget_grab_focus (widget);
2665         }
2666
2667         view->pressed_button = event->button;
2668         view->selection_info.in_drag = FALSE;
2669
2670         switch (event->button) {
2671                 case 1: {
2672
2673                         if (view->scroll_info.autoscrolling == TRUE) {
2674                                 view->scroll_info.autoscrolling = FALSE;
2675                                 return TRUE;
2676                         }
2677
2678                         EvImage *image;
2679                         EvFormField *field;
2680
2681                         if (EV_IS_SELECTION (view->document) && view->selection_info.selections) {
2682                                 if (event->type == GDK_3BUTTON_PRESS) {
2683                                         start_selection_for_event (view, event);
2684                                 } else if (location_in_selected_text (view,
2685                                                                event->x + view->scroll_x,
2686                                                                event->y + view->scroll_y)) {
2687                                         view->selection_info.in_drag = TRUE;
2688                                 } else {
2689                                         start_selection_for_event (view, event);
2690                                 }
2691
2692                                 gtk_widget_queue_draw (widget);
2693                         } else if ((field = ev_view_get_form_field_at_location (view, event->x, event->y))) {
2694                                 ev_view_remove_all (view);
2695                                 ev_view_handle_form_field (view, field, event->x, event->y);
2696                         } else if (!location_in_text (view, event->x + view->scroll_x, event->y + view->scroll_y) &&
2697                                    (image = ev_view_get_image_at_location (view, event->x, event->y))) {
2698                                 if (view->image_dnd_info.image)
2699                                         g_object_unref (view->image_dnd_info.image);
2700                                 view->image_dnd_info.image = g_object_ref (image);
2701                                 view->image_dnd_info.in_drag = TRUE;
2702
2703                                 view->image_dnd_info.start.x = event->x + view->scroll_x;
2704                                 view->image_dnd_info.start.y = event->y + view->scroll_y;
2705                         } else {
2706                                 ev_view_remove_all (view);
2707
2708                                 if (EV_IS_SELECTION (view->document))
2709                                         start_selection_for_event (view, event);
2710                         }
2711                 }
2712                         return TRUE;
2713                 case 2:
2714                         /* use root coordinates as reference point because
2715                          * scrolling changes window relative coordinates */
2716                         if (view->scroll_info.autoscrolling == TRUE) {
2717                                 view->scroll_info.autoscrolling = FALSE;
2718                                 return TRUE;
2719                         }
2720                         view->drag_info.start.x = event->x_root;
2721                         view->drag_info.start.y = event->y_root;
2722                         view->drag_info.hadj = gtk_adjustment_get_value (view->hadjustment);
2723                         view->drag_info.vadj = gtk_adjustment_get_value (view->vadjustment);
2724
2725                         ev_view_set_cursor (view, EV_VIEW_CURSOR_DRAG);
2726
2727                         return TRUE;
2728                 case 3:
2729                         if (!view->scroll_info.autoscrolling)
2730                                 view->scroll_info.start_y = event->y;
2731                         return ev_view_do_popup_menu (view, event->x, event->y);
2732         }
2733
2734         return FALSE;
2735 }
2736
2737 static void
2738 ev_view_remove_all (EvView *view)
2739 {
2740         GList *children, *child;
2741
2742         children = gtk_container_get_children (GTK_CONTAINER (view));
2743         for (child = children; child && child->data; child = g_list_next (child)) {
2744                 gtk_container_remove (GTK_CONTAINER (view),
2745                                       GTK_WIDGET (child->data));
2746         }
2747         g_list_free (children);
2748 }
2749
2750 /*** Drag and Drop ***/
2751 static void
2752 ev_view_drag_data_get (GtkWidget        *widget,
2753                        GdkDragContext   *context,
2754                        GtkSelectionData *selection_data,
2755                        guint             info,
2756                        guint             time)
2757 {
2758         EvView *view = EV_VIEW (widget);
2759
2760         switch (info) {
2761                 case TARGET_DND_TEXT:
2762                         if (EV_IS_SELECTION (view->document) &&
2763                             view->selection_info.selections) {
2764                                 gchar *text;
2765
2766                                 text = get_selected_text (view);
2767                                 gtk_selection_data_set_text (selection_data,
2768                                                              text,
2769                                                              strlen (text));
2770                                 g_free (text);
2771                         }
2772                         break;
2773                 case TARGET_DND_IMAGE:
2774                         if (view->image_dnd_info.image) {
2775                                 GdkPixbuf *pixbuf;
2776
2777                                 pixbuf = ev_image_get_pixbuf (view->image_dnd_info.image);
2778                                 gtk_selection_data_set_pixbuf (selection_data, pixbuf);
2779                         }
2780                         break;
2781                 case TARGET_DND_URI:
2782                         if (view->image_dnd_info.image) {
2783                                 const gchar *tmp_uri;
2784                                 gchar      **uris;
2785
2786                                 tmp_uri = ev_image_save_tmp (view->image_dnd_info.image);
2787
2788                                 uris = g_new0 (gchar *, 2);
2789                                 uris[0] = (gchar *)tmp_uri;
2790
2791                                 gtk_selection_data_set_uris (selection_data, uris);
2792
2793                                 /* g_free instead of g_strfreev since tmp_uri is const */
2794                                 g_free (uris);
2795                         }
2796         }
2797 }
2798
2799 static gboolean
2800 ev_view_drag_motion (GtkWidget      *widget,
2801                      GdkDragContext *context,
2802                      gint            x,
2803                      gint            y,
2804                      guint           time)
2805 {
2806         if (gtk_drag_get_source_widget (context) == widget)
2807                 gdk_drag_status (context, 0, time);
2808         else
2809                 gdk_drag_status (context, context->suggested_action, time);
2810
2811         return TRUE;
2812 }
2813
2814 static void
2815 ev_view_drag_data_received (GtkWidget          *widget,
2816                             GdkDragContext     *context,
2817                             gint                x,
2818                             gint                y,
2819                             GtkSelectionData   *selection_data,
2820                             guint               info,
2821                             guint               time)
2822 {
2823         gchar  **uris;
2824         gint     i = 0;
2825         GSList  *uri_list = NULL;
2826
2827         uris = gtk_selection_data_get_uris (selection_data);
2828         if (!uris) {
2829                 gtk_drag_finish (context, FALSE, FALSE, time);
2830                 return;
2831         }
2832
2833         for (i = 0; uris[i]; i++) {
2834                 uri_list = g_slist_prepend (uri_list, (gpointer) uris[i]);
2835         }
2836
2837         ev_application_open_uri_list (EV_APP, uri_list,
2838                                       gtk_widget_get_screen (widget),
2839                                       0);
2840         gtk_drag_finish (context, TRUE, FALSE, time);
2841
2842         g_strfreev (uris);
2843         g_slist_free (uri_list);
2844 }
2845
2846
2847 static gboolean
2848 selection_update_idle_cb (EvView *view)
2849 {
2850         compute_selections (view,
2851                             view->selection_info.style,
2852                             &view->selection_info.start,
2853                             &view->motion);
2854         view->selection_update_id = 0;
2855         return FALSE;
2856 }
2857
2858 static gboolean
2859 selection_scroll_timeout_cb (EvView *view)
2860 {
2861         gint x, y, shift = 0;
2862         GtkWidget *widget = GTK_WIDGET (view);
2863
2864         gtk_widget_get_pointer (widget, &x, &y);
2865
2866         if (y > widget->allocation.height) {
2867                 shift = (y - widget->allocation.height) / 2;
2868         } else if (y < 0) {
2869                 shift = y / 2;
2870         }
2871
2872         if (shift)
2873                 gtk_adjustment_set_value (view->vadjustment,
2874                                           CLAMP (view->vadjustment->value + shift,
2875                                           view->vadjustment->lower,
2876                                           view->vadjustment->upper -
2877                                           view->vadjustment->page_size));
2878
2879         if (x > widget->allocation.width) {
2880                 shift = (x - widget->allocation.width) / 2;
2881         } else if (x < 0) {
2882                 shift = x / 2;
2883         }
2884
2885         if (shift)
2886                 gtk_adjustment_set_value (view->hadjustment,
2887                                           CLAMP (view->hadjustment->value + shift,
2888                                           view->hadjustment->lower,
2889                                           view->hadjustment->upper -
2890                                           view->hadjustment->page_size));
2891
2892         return TRUE;
2893 }
2894
2895 static gboolean
2896 ev_view_motion_notify_event (GtkWidget      *widget,
2897                              GdkEventMotion *event)
2898 {
2899         EvView *view = EV_VIEW (widget);
2900         gint x, y;
2901
2902         if (!view->document)
2903                 return FALSE;
2904
2905
2906         if (event->is_hint || event->window != view->layout.bin_window) {
2907             gtk_widget_get_pointer (widget, &x, &y);
2908         } else {
2909             x = event->x;
2910             y = event->y;
2911         }
2912
2913         if (view->scroll_info.autoscrolling) {
2914                 view->scroll_info.last_y = y;
2915         }
2916
2917         if (view->selection_info.in_drag) {
2918                 if (gtk_drag_check_threshold (widget,
2919                                               view->selection_info.start.x,
2920                                               view->selection_info.start.y,
2921                                               x, y)) {
2922                         GtkTargetList *target_list = gtk_target_list_new (NULL, 0);
2923
2924                         gtk_target_list_add_text_targets (target_list, TARGET_DND_TEXT);
2925
2926                         gtk_drag_begin (widget, target_list,
2927                                         GDK_ACTION_COPY,
2928                                         1, (GdkEvent *)event);
2929
2930                         view->selection_info.in_drag = FALSE;
2931
2932                         gtk_target_list_unref (target_list);
2933
2934                         return TRUE;
2935                 }
2936         } else if (view->image_dnd_info.in_drag) {
2937                 if (gtk_drag_check_threshold (widget,
2938                                               view->selection_info.start.x,
2939                                               view->selection_info.start.y,
2940                                               x, y)) {
2941                         GtkTargetList *target_list = gtk_target_list_new (NULL, 0);
2942
2943                         gtk_target_list_add_uri_targets (target_list, TARGET_DND_URI);
2944                         gtk_target_list_add_image_targets (target_list, TARGET_DND_IMAGE, TRUE);
2945
2946                         gtk_drag_begin (widget, target_list,
2947                                         GDK_ACTION_COPY,
2948                                         1, (GdkEvent *)event);
2949
2950                         view->image_dnd_info.in_drag = FALSE;
2951
2952                         gtk_target_list_unref (target_list);
2953
2954                         return TRUE;
2955                 }
2956         }
2957
2958         /* For the Evince 0.4.x release, we limit selection to un-rotated
2959          * documents only.
2960          */
2961         if (view->pressed_button == 1 && view->rotation == 0) {
2962
2963                 /* Schedule timeout to scroll during selection and additionally
2964                  * scroll once to allow arbitrary speed. */
2965                 if (!view->selection_scroll_id)
2966                     view->selection_scroll_id = g_timeout_add (SCROLL_TIME, (GSourceFunc)selection_scroll_timeout_cb, view);
2967                 else
2968                     selection_scroll_timeout_cb (view);
2969
2970                 view->selection_info.in_selection = TRUE;
2971                 view->motion.x = x + view->scroll_x;
2972                 view->motion.y = y + view->scroll_y;
2973
2974                 /* Queue an idle to handle the motion.  We do this because
2975                  * handling any selection events in the motion could be slower
2976                  * than new motion events reach us.  We always put it in the
2977                  * idle to make sure we catch up and don't visibly lag the
2978                  * mouse. */
2979                 if (!view->selection_update_id)
2980                         view->selection_update_id = g_idle_add ((GSourceFunc)selection_update_idle_cb, view);
2981
2982                 return TRUE;
2983         } else if (view->pressed_button == 2) {
2984                 if (!view->drag_info.in_drag) {
2985                         gboolean start;
2986
2987                         start = gtk_drag_check_threshold (widget,
2988                                                           view->drag_info.start.x,
2989                                                           view->drag_info.start.y,
2990                                                           event->x_root,
2991                                                           event->y_root);
2992                         view->drag_info.in_drag = start;
2993                 }
2994
2995                 if (view->drag_info.in_drag) {
2996                         int dx, dy;
2997                         gdouble dhadj_value, dvadj_value;
2998
2999                         dx = event->x_root - view->drag_info.start.x;
3000                         dy = event->y_root - view->drag_info.start.y;
3001
3002                         dhadj_value = view->hadjustment->page_size *
3003                                       (gdouble)dx / widget->allocation.width;
3004                         dvadj_value = view->vadjustment->page_size *
3005                                       (gdouble)dy / widget->allocation.height;
3006
3007                         /* clamp scrolling to visible area */
3008                         gtk_adjustment_set_value (view->hadjustment,
3009                                                   MIN(view->drag_info.hadj - dhadj_value,
3010                                                       view->hadjustment->upper -
3011                                                       view->hadjustment->page_size));
3012                         gtk_adjustment_set_value (view->vadjustment,
3013                                                   MIN(view->drag_info.vadj - dvadj_value,
3014                                                       view->vadjustment->upper -
3015                                                       view->vadjustment->page_size));
3016
3017                         return TRUE;
3018                 }
3019         } else if (view->pressed_button <= 0) {
3020                 ev_view_handle_cursor_over_xy (view, x, y);
3021                 return TRUE;
3022         }
3023
3024         return FALSE;
3025 }
3026
3027 static gboolean
3028 ev_view_button_release_event (GtkWidget      *widget,
3029                               GdkEventButton *event)
3030 {
3031         EvView *view = EV_VIEW (widget);
3032         EvLink *link = NULL;
3033
3034         view->drag_info.in_drag = FALSE;
3035         view->image_dnd_info.in_drag = FALSE;
3036
3037         if (view->pressed_button == 2) {
3038                 ev_view_handle_cursor_over_xy (view, event->x, event->y);
3039         }
3040
3041         if (view->document && view->pressed_button != 3) {
3042                 link = ev_view_get_link_at_location (view, event->x, event->y);
3043         }
3044
3045         view->pressed_button = -1;
3046
3047         if (view->selection_scroll_id) {
3048             g_source_remove (view->selection_scroll_id);
3049             view->selection_scroll_id = 0;
3050         }
3051         if (view->scroll_info.timeout_id) {
3052             g_source_remove (view->scroll_info.timeout_id);
3053             view->scroll_info.timeout_id = 0;
3054         }
3055         if (view->selection_update_id) {
3056             g_source_remove (view->selection_update_id);
3057             view->selection_update_id = 0;
3058         }
3059
3060         if (!view->selection_info.in_selection &&
3061             view->selection_info.style != EV_SELECTION_STYLE_GLYPH) {
3062                 compute_selections (view,
3063                                     view->selection_info.style,
3064                                     &(view->selection_info.start),
3065                                     &(view->selection_info.start));
3066         }
3067
3068         if (view->selection_info.selections) {
3069                 ev_view_update_primary_selection (view);
3070
3071                 if (view->selection_info.in_drag) {
3072                         clear_selection (view);
3073                         gtk_widget_queue_draw (widget);
3074                 }
3075
3076                 view->selection_info.in_drag = FALSE;
3077         } else if (link) {
3078                 if (event->button == 2) {
3079                         EvLinkAction    *action;
3080                         EvLinkActionType type;
3081
3082                         action = ev_link_get_action (link);
3083                         if (!action)
3084                                 return FALSE;
3085
3086                         type = ev_link_action_get_action_type (action);
3087                         if (type == EV_LINK_ACTION_TYPE_GOTO_DEST) {
3088                                 g_signal_emit (view,
3089                                                signals[SIGNAL_EXTERNAL_LINK],
3090                                                0, action);
3091                         }
3092                 } else {
3093                         ev_view_handle_link (view, link);
3094                 }
3095         } else if (view->presentation) {
3096                 switch (event->button) {
3097                         case 1:
3098                                 ev_view_next_page (view);
3099                                 return TRUE;
3100                         case 3:
3101                                 ev_view_previous_page (view);
3102                                 return TRUE;
3103                 }
3104         }
3105
3106         return FALSE;
3107 }
3108
3109 /* Goto Window */
3110 /* Cut and paste from gtkwindow.c */
3111 static void
3112 send_focus_change (GtkWidget *widget,
3113                    gboolean   in)
3114 {
3115         GdkEvent *fevent = gdk_event_new (GDK_FOCUS_CHANGE);
3116
3117         g_object_ref (widget);
3118
3119         if (in)
3120                 GTK_WIDGET_SET_FLAGS (widget, GTK_HAS_FOCUS);
3121         else
3122                 GTK_WIDGET_UNSET_FLAGS (widget, GTK_HAS_FOCUS);
3123
3124         fevent->focus_change.type = GDK_FOCUS_CHANGE;
3125         fevent->focus_change.window = g_object_ref (widget->window);
3126         fevent->focus_change.in = in;
3127
3128         gtk_widget_event (widget, fevent);
3129
3130         g_object_notify (G_OBJECT (widget), "has-focus");
3131
3132         g_object_unref (widget);
3133         gdk_event_free (fevent);
3134 }
3135
3136 static void
3137 ev_view_goto_window_hide (EvView *view)
3138 {
3139         /* send focus-in event */
3140         send_focus_change (view->goto_entry, FALSE);
3141         gtk_widget_hide (view->goto_window);
3142         gtk_entry_set_text (GTK_ENTRY (view->goto_entry), "");
3143 }
3144
3145 static gboolean
3146 ev_view_goto_window_delete_event (GtkWidget   *widget,
3147                                   GdkEventAny *event,
3148                                   EvView      *view)
3149 {
3150         ev_view_goto_window_hide (view);
3151
3152         return TRUE;
3153 }
3154
3155 static gboolean
3156 key_is_numeric (guint keyval)
3157 {
3158         return ((keyval >= GDK_0 && keyval <= GDK_9) ||
3159                 (keyval >= GDK_KP_0 && keyval <= GDK_KP_9));
3160 }
3161
3162 static gboolean
3163 ev_view_goto_window_key_press_event (GtkWidget   *widget,
3164                                      GdkEventKey *event,
3165                                      EvView      *view)
3166 {
3167         switch (event->keyval) {
3168                 case GDK_Escape:
3169                 case GDK_Tab:
3170                 case GDK_KP_Tab:
3171                 case GDK_ISO_Left_Tab:
3172                         ev_view_goto_window_hide (view);
3173                         return TRUE;
3174                 case GDK_Return:
3175                 case GDK_KP_Enter:
3176                 case GDK_ISO_Enter:
3177                 case GDK_BackSpace:
3178                 case GDK_Delete:
3179                         return FALSE;
3180                 default:
3181                         if (!key_is_numeric (event->keyval))
3182                                 return TRUE;
3183         }
3184
3185         return FALSE;
3186 }
3187
3188 static gboolean
3189 ev_view_goto_window_button_press_event (GtkWidget      *widget,
3190                                         GdkEventButton *event,
3191                                         EvView         *view)
3192 {
3193         ev_view_goto_window_hide (view);
3194
3195         return TRUE;
3196 }
3197
3198 static void
3199 ev_view_goto_entry_activate (GtkEntry *entry,
3200                              EvView   *view)
3201 {
3202         const gchar *text;
3203         gint         page;
3204
3205         text = gtk_entry_get_text (entry);
3206         page = atoi (text) - 1;
3207
3208         ev_view_goto_window_hide (view);
3209
3210         if (page >= 0 &&
3211             page < ev_page_cache_get_n_pages (view->page_cache))
3212                 ev_page_cache_set_current_page (view->page_cache, page);
3213 }
3214
3215 static void
3216 ev_view_goto_window_create (EvView *view)
3217 {
3218         GtkWidget *frame, *hbox, *toplevel, *label;
3219
3220         toplevel = gtk_widget_get_toplevel (GTK_WIDGET (view));
3221
3222         if (view->goto_window) {
3223                 if (GTK_WINDOW (toplevel)->group)
3224                         gtk_window_group_add_window (GTK_WINDOW (toplevel)->group,
3225                                                      GTK_WINDOW (view->goto_window));
3226                 else if (GTK_WINDOW (view->goto_window)->group)
3227                         gtk_window_group_remove_window (GTK_WINDOW (view->goto_window)->group,
3228                                                         GTK_WINDOW (view->goto_window));
3229                 return;
3230         }
3231
3232         view->goto_window = gtk_window_new (GTK_WINDOW_POPUP);
3233
3234         if (GTK_WINDOW (toplevel)->group)
3235                 gtk_window_group_add_window (GTK_WINDOW (toplevel)->group,
3236                                              GTK_WINDOW (view->goto_window));
3237
3238         gtk_window_set_modal (GTK_WINDOW (view->goto_window), TRUE);
3239
3240         g_signal_connect (view->goto_window, "delete_event",
3241                           G_CALLBACK (ev_view_goto_window_delete_event),
3242                           view);
3243         g_signal_connect (view->goto_window, "key_press_event",
3244                           G_CALLBACK (ev_view_goto_window_key_press_event),
3245                           view);
3246         g_signal_connect (view->goto_window, "button_press_event",
3247                           G_CALLBACK (ev_view_goto_window_button_press_event),
3248                           view);
3249
3250         frame = gtk_frame_new (NULL);
3251         gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_ETCHED_IN);
3252         gtk_container_add (GTK_CONTAINER (view->goto_window), frame);
3253         gtk_widget_show (frame);
3254
3255         hbox = gtk_hbox_new (FALSE, 0);
3256         gtk_container_set_border_width (GTK_CONTAINER (hbox), 3);
3257         gtk_container_add (GTK_CONTAINER (frame), hbox);
3258         gtk_widget_show (hbox);
3259
3260         label = gtk_label_new(_("Jump to page:"));
3261         gtk_box_pack_start (GTK_BOX (hbox), label, TRUE, TRUE, 3);
3262         gtk_widget_show (label);
3263         gtk_widget_realize (label);
3264
3265         view->goto_entry = gtk_entry_new ();
3266         g_signal_connect (view->goto_entry, "activate",
3267                           G_CALLBACK (ev_view_goto_entry_activate),
3268                           view);
3269         gtk_box_pack_start_defaults (GTK_BOX (hbox), view->goto_entry);
3270         gtk_widget_show (view->goto_entry);
3271         gtk_widget_realize (view->goto_entry);
3272 }
3273
3274 static void
3275 ev_view_goto_entry_grab_focus (EvView *view)
3276 {
3277         GtkWidgetClass *entry_parent_class;
3278
3279         entry_parent_class = g_type_class_peek_parent (GTK_ENTRY_GET_CLASS (view->goto_entry));
3280         (entry_parent_class->grab_focus) (view->goto_entry);
3281
3282         send_focus_change (view->goto_entry, TRUE);
3283 }
3284
3285 static void
3286 ev_view_goto_window_send_key_event (EvView   *view,
3287                                     GdkEvent *event)
3288 {
3289         GdkEventKey *new_event;
3290         GdkScreen   *screen;
3291
3292         /* Move goto window off screen */
3293         screen = gtk_widget_get_screen (GTK_WIDGET (view));
3294         gtk_window_move (GTK_WINDOW (view->goto_window),
3295                          gdk_screen_get_width (screen) + 1,
3296                          gdk_screen_get_height (screen) + 1);
3297         gtk_widget_show (view->goto_window);
3298
3299         new_event = (GdkEventKey *) gdk_event_copy (event);
3300         g_object_unref (new_event->window);
3301         new_event->window = g_object_ref (view->goto_window->window);
3302         gtk_widget_realize (view->goto_window);
3303
3304         gtk_widget_event (view->goto_window, (GdkEvent *)new_event);
3305         gdk_event_free ((GdkEvent *)new_event);
3306         gtk_widget_hide (view->goto_window);
3307 }
3308
3309 static gboolean
3310 ev_view_key_press_event (GtkWidget   *widget,
3311                          GdkEventKey *event)
3312 {
3313         EvView *view = EV_VIEW (widget);
3314         EvPresentationState current;
3315
3316         if (!view->document)
3317                 return FALSE;
3318
3319         if (!view->presentation ||
3320             view->presentation_state == EV_PRESENTATION_END)
3321                 return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
3322
3323
3324         current = view->presentation_state;
3325
3326         switch (event->keyval) {
3327                 case GDK_b:
3328                 case GDK_B:
3329                         view->presentation_state =
3330                                 (view->presentation_state == EV_PRESENTATION_BLACK) ?
3331                                 EV_PRESENTATION_NORMAL : EV_PRESENTATION_BLACK;
3332                         break;
3333                 case GDK_w:
3334                 case GDK_W:
3335                         view->presentation_state =
3336                                 (view->presentation_state == EV_PRESENTATION_WHITE) ?
3337                                 EV_PRESENTATION_NORMAL : EV_PRESENTATION_WHITE;
3338                         break;
3339                 default:
3340                         if (view->presentation_state == EV_PRESENTATION_BLACK ||
3341                             view->presentation_state == EV_PRESENTATION_WHITE) {
3342                                 view->presentation_state = EV_PRESENTATION_NORMAL;
3343                         }
3344         }
3345
3346         if (current == view->presentation_state) {
3347                 if (ev_page_cache_get_n_pages (view->page_cache) > 1 &&
3348                     key_is_numeric (event->keyval)) {
3349                         gint x, y;
3350
3351                         ev_view_goto_window_create (view);
3352                         ev_view_goto_window_send_key_event (view, (GdkEvent *)event);
3353                         gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
3354                         gtk_window_move (GTK_WINDOW (view->goto_window), x, y);
3355                         gtk_widget_show (view->goto_window);
3356                         ev_view_goto_entry_grab_focus (view);
3357
3358                         return TRUE;
3359                 }
3360
3361                 return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
3362         }
3363
3364         switch (view->presentation_state) {
3365                 case EV_PRESENTATION_NORMAL:
3366                 case EV_PRESENTATION_BLACK:
3367                         gdk_window_set_background (view->layout.bin_window,
3368                                                    &widget->style->black);
3369                         break;
3370                 case EV_PRESENTATION_WHITE:
3371                         gdk_window_set_background (view->layout.bin_window,
3372                                                    &widget->style->white);
3373                         break;
3374                 default:
3375                         return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
3376         }
3377
3378         gtk_widget_queue_draw (widget);
3379         return TRUE;
3380 }
3381
3382 static gint
3383 ev_view_focus_in (GtkWidget     *widget,
3384                   GdkEventFocus *event)
3385 {
3386         if (EV_VIEW (widget)->pixbuf_cache)
3387                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
3388         gtk_widget_queue_draw (widget);
3389
3390         return FALSE;
3391 }
3392
3393 static gint
3394 ev_view_focus_out (GtkWidget     *widget,
3395                      GdkEventFocus *event)
3396 {
3397         if (EV_VIEW (widget)->goto_window)
3398                 ev_view_goto_window_hide (EV_VIEW (widget));
3399
3400         if (EV_VIEW (widget)->pixbuf_cache)
3401                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
3402         gtk_widget_queue_draw (widget);
3403
3404         return FALSE;
3405 }
3406
3407 static gboolean
3408 ev_view_leave_notify_event (GtkWidget *widget, GdkEventCrossing   *event)
3409 {
3410         EvView *view = EV_VIEW (widget);
3411
3412         if (view->cursor != EV_VIEW_CURSOR_NORMAL)
3413                 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
3414
3415 #if !GTK_CHECK_VERSION (2, 11, 7)
3416         if (view->link_tooltip) {
3417                 view->hovered_link = NULL;
3418                 ev_tooltip_deactivate (EV_TOOLTIP (view->link_tooltip));
3419         }
3420 #endif
3421
3422         return FALSE;
3423 }
3424
3425 static gboolean
3426 ev_view_enter_notify_event (GtkWidget *widget, GdkEventCrossing   *event)
3427 {
3428         EvView *view = EV_VIEW (widget);
3429
3430         ev_view_handle_cursor_over_xy (view, event->x, event->y);
3431
3432         return FALSE;
3433 }
3434
3435 static void
3436 ev_view_style_set (GtkWidget *widget,
3437                    GtkStyle  *old_style)
3438 {
3439         if (EV_VIEW (widget)->pixbuf_cache)
3440                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
3441
3442         GTK_WIDGET_CLASS (ev_view_parent_class)->style_set (widget, old_style);
3443 }
3444
3445 /*** Drawing ***/
3446
3447 static guint32
3448 ev_gdk_color_to_rgb (const GdkColor *color)
3449 {
3450   guint32 result;
3451   result = (0xff0000 | (color->red & 0xff00));
3452   result <<= 8;
3453   result |= ((color->green & 0xff00) | (color->blue >> 8));
3454   return result;
3455 }
3456
3457 static void
3458 draw_rubberband (GtkWidget *widget, GdkWindow *window,
3459                  const GdkRectangle *rect, guchar alpha)
3460 {
3461         GdkGC *gc;
3462         GdkPixbuf *pixbuf;
3463         GdkColor *fill_color_gdk;
3464         guint fill_color;
3465
3466         fill_color_gdk = gdk_color_copy (&GTK_WIDGET (widget)->style->base[GTK_STATE_SELECTED]);
3467         fill_color = ev_gdk_color_to_rgb (fill_color_gdk) << 8 | alpha;
3468
3469         pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE, 8,
3470                                  rect->width, rect->height);
3471         gdk_pixbuf_fill (pixbuf, fill_color);
3472
3473         gdk_draw_pixbuf (window, NULL, pixbuf,
3474                          0, 0,
3475                          rect->x - EV_VIEW (widget)->scroll_x, rect->y - EV_VIEW (widget)->scroll_y,
3476                          rect->width, rect->height,
3477                          GDK_RGB_DITHER_NONE,
3478                          0, 0);
3479
3480         g_object_unref (pixbuf);
3481
3482         gc = gdk_gc_new (window);
3483         gdk_gc_set_rgb_fg_color (gc, fill_color_gdk);
3484         gdk_draw_rectangle (window, gc, FALSE,
3485                             rect->x - EV_VIEW (widget)->scroll_x, rect->y - EV_VIEW (widget)->scroll_y,
3486                             rect->width - 1,
3487                             rect->height - 1);
3488         g_object_unref (gc);
3489
3490         gdk_color_free (fill_color_gdk);
3491 }
3492
3493
3494 static void
3495 highlight_find_results (EvView *view, int page)
3496 {
3497         EvDocumentFind *find;
3498         int i, results = 0;
3499
3500         find = EV_DOCUMENT_FIND (view->document);
3501
3502         results = ev_document_find_get_n_results (find, page);
3503
3504         for (i = 0; i < results; i++) {
3505                 EvRectangle rectangle;
3506                 GdkRectangle view_rectangle;
3507                 guchar alpha;
3508
3509                 if (i == view->find_result && page == view->current_page) {
3510                         alpha = 0x90;
3511                 } else {
3512                         alpha = 0x20;
3513                 }
3514
3515                 ev_document_find_get_result (find, page, i, &rectangle);
3516                 doc_rect_to_view_rect (view, page, &rectangle, &view_rectangle);
3517                 draw_rubberband (GTK_WIDGET (view), view->layout.bin_window,
3518                                  &view_rectangle, alpha);
3519         }
3520 }
3521
3522 static void
3523 draw_loading_text (EvView       *view,
3524                    GdkRectangle *page_area,
3525                    GdkRectangle *expose_area)
3526 {
3527         cairo_t *cr;
3528         gint     width, height;
3529
3530         /* Don't annoy users with loading messages during presentations.
3531          * FIXME: Temporary "workaround" for
3532          * http://bugzilla.gnome.org/show_bug.cgi?id=320352 */
3533         if (view->presentation)
3534                 return;
3535
3536         if (!view->loading_text) {
3537                 const gchar *loading_text = _("Loading...");
3538                 PangoLayout *layout;
3539                 PangoFontDescription *font_desc;
3540                 PangoRectangle logical_rect;
3541                 gint target_width;
3542                 gdouble real_scale;
3543
3544                 ev_document_fc_mutex_lock ();
3545
3546                 layout = gtk_widget_create_pango_layout (GTK_WIDGET (view), loading_text);
3547
3548                 font_desc = pango_font_description_new ();
3549
3550                 /* We set the font to be 10 points, get the size, and scale appropriately */
3551                 pango_font_description_set_size (font_desc, 10 * PANGO_SCALE);
3552                 pango_layout_set_font_description (layout, font_desc);
3553                 pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
3554
3555                 target_width = MAX (page_area->width / 2, 1);
3556                 real_scale = ((double)target_width / (double) logical_rect.width) * (PANGO_SCALE * 10);
3557                 pango_font_description_set_size (font_desc, (int)real_scale);
3558                 pango_layout_set_font_description (layout, font_desc);
3559                 pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
3560
3561                 view->loading_text = cairo_image_surface_create (CAIRO_FORMAT_ARGB32,
3562                                                                  logical_rect.width,
3563                                                                  logical_rect.height);
3564                 cr = cairo_create (view->loading_text);
3565                 cairo_set_source_rgb (cr,
3566                                       155 / (double)255,
3567                                       155 / (double)255,
3568                                       155 / (double)255);
3569                 pango_cairo_show_layout (cr, layout);
3570                 cairo_destroy (cr);
3571
3572                 pango_font_description_free (font_desc);
3573                 g_object_unref (layout);
3574
3575                 ev_document_fc_mutex_unlock ();
3576         }
3577
3578         width = (page_area->width - cairo_image_surface_get_width (view->loading_text)) / 2;
3579         height = (page_area->height - cairo_image_surface_get_height (view->loading_text)) / 2;
3580
3581         cr = gdk_cairo_create (view->layout.bin_window);
3582         cairo_translate (cr,
3583                          page_area->x + width,
3584                          page_area->y + height);
3585         cairo_set_source_surface (cr, view->loading_text, 0, 0);
3586         cairo_paint (cr);
3587         cairo_destroy (cr);
3588 }
3589
3590 static void
3591 draw_one_page (EvView       *view,
3592                gint          page,
3593                cairo_t      *cr,
3594                GdkRectangle *page_area,
3595                GtkBorder    *border,
3596                GdkRectangle *expose_area,
3597                gboolean     *page_ready)
3598 {
3599         GdkRectangle overlap;
3600         GdkRectangle real_page_area;
3601
3602         g_assert (view->document);
3603
3604         if (! gdk_rectangle_intersect (page_area, expose_area, &overlap))
3605                 return;
3606
3607         /* Render the document itself */
3608         real_page_area = *page_area;
3609
3610         real_page_area.x += border->left;
3611         real_page_area.y += border->top;
3612         real_page_area.width -= (border->left + border->right);
3613         real_page_area.height -= (border->top + border->bottom);
3614         *page_ready = TRUE;
3615
3616         if (!view->presentation) {
3617                 gint current_page;
3618
3619                 current_page = ev_page_cache_get_current_page (view->page_cache);
3620                 ev_document_misc_paint_one_page (view->layout.bin_window,
3621                                                  GTK_WIDGET (view),
3622                                                  page_area, border,
3623                                                  page == current_page);
3624         }
3625
3626         if (gdk_rectangle_intersect (&real_page_area, expose_area, &overlap)) {
3627                 gint             width, height;
3628                 gint             page_width, page_height;
3629                 cairo_surface_t *page_surface = NULL;
3630                 gint             selection_width, selection_height;
3631                 cairo_surface_t *selection_surface = NULL;
3632
3633                 page_surface = ev_pixbuf_cache_get_surface (view->pixbuf_cache, page);
3634
3635                 if (!page_surface) {
3636                         draw_loading_text (view,
3637                                            &real_page_area,
3638                                            expose_area);
3639                         *page_ready = FALSE;
3640
3641                         return;
3642                 }
3643
3644                 ev_page_cache_get_size (view->page_cache,
3645                                         page, view->rotation,
3646                                         view->scale,
3647                                         &width, &height);
3648
3649                 page_width = cairo_image_surface_get_width (page_surface);
3650                 page_height = cairo_image_surface_get_height (page_surface);
3651
3652                 cairo_save (cr);
3653                 cairo_translate (cr, overlap.x, overlap.y);
3654
3655                 if (width != page_width || height != page_height) {
3656                         cairo_pattern_set_filter (cairo_get_source (cr),
3657                                                   CAIRO_FILTER_FAST);
3658                         cairo_scale (cr,
3659                                      (gdouble)width / page_width,
3660                                      (gdouble)height / page_height);
3661                 }
3662
3663                 cairo_surface_set_device_offset (page_surface,
3664                                                  overlap.x - real_page_area.x,
3665                                                  overlap.y - real_page_area.y);
3666                 cairo_set_source_surface (cr, page_surface, 0, 0);
3667                 cairo_paint (cr);
3668                 cairo_restore (cr);
3669
3670                 /* Get the selection pixbuf iff we have something to draw */
3671                 if (find_selection_for_page (view, page) &&
3672                     view->selection_mode == EV_VIEW_SELECTION_TEXT) {
3673                         selection_surface =
3674                                 ev_pixbuf_cache_get_selection_surface (view->pixbuf_cache,
3675                                                                        page,
3676                                                                        view->scale,
3677                                                                        NULL);
3678                 }
3679
3680                 if (!selection_surface) {
3681                         return;
3682                 }
3683
3684                 selection_width = cairo_image_surface_get_width (selection_surface);
3685                 selection_height = cairo_image_surface_get_height (selection_surface);
3686
3687                 cairo_save (cr);
3688                 cairo_translate (cr, overlap.x, overlap.y);
3689
3690                 if (width != selection_width || height != selection_height) {
3691                         cairo_pattern_set_filter (cairo_get_source (cr),
3692                                                   CAIRO_FILTER_FAST);
3693                         cairo_scale (cr,
3694                                      (gdouble)width / selection_width,
3695                                      (gdouble)height / selection_height);
3696                 }
3697
3698                 cairo_surface_set_device_offset (selection_surface,
3699                                                  overlap.x - real_page_area.x,
3700                                                  overlap.y - real_page_area.y);
3701                 cairo_set_source_surface (cr, selection_surface, 0, 0);
3702                 cairo_paint (cr);
3703                 cairo_restore (cr);
3704         }
3705 }
3706
3707 /*** GObject functions ***/
3708
3709 static void
3710 ev_view_finalize (GObject *object)
3711 {
3712         EvView *view = EV_VIEW (object);
3713
3714         g_free (view->find_status);
3715
3716         clear_selection (view);
3717
3718         if (view->image_dnd_info.image)
3719                 g_object_unref (view->image_dnd_info.image);
3720         view->image_dnd_info.image = NULL;
3721
3722         G_OBJECT_CLASS (ev_view_parent_class)->finalize (object);
3723 }
3724
3725 static void
3726 ev_view_destroy (GtkObject *object)
3727 {
3728         EvView *view = EV_VIEW (object);
3729
3730         if (view->document) {
3731                 g_object_unref (view->document);
3732                 view->document = NULL;
3733         }
3734
3735         if (view->pixbuf_cache) {
3736                 g_object_unref (view->pixbuf_cache);
3737                 view->pixbuf_cache = NULL;
3738         }
3739
3740 #if !GTK_CHECK_VERSION (2, 11, 7)
3741         if (view->link_tooltip) {
3742                 gtk_widget_destroy (view->link_tooltip);
3743                 view->link_tooltip = NULL;
3744         }
3745 #endif
3746         if (view->goto_window) {
3747                 gtk_widget_destroy (view->goto_window);
3748                 view->goto_window = NULL;
3749                 view->goto_entry = NULL;
3750         }
3751
3752         if (view->selection_scroll_id) {
3753             g_source_remove (view->selection_scroll_id);
3754             view->selection_scroll_id = 0;
3755         }
3756
3757         if (view->selection_update_id) {
3758             g_source_remove (view->selection_update_id);
3759             view->selection_update_id = 0;
3760         }
3761
3762         if (view->loading_text) {
3763                 cairo_surface_destroy (view->loading_text);
3764                 view->loading_text = NULL;
3765         }
3766
3767         ev_view_presentation_transition_stop (view);
3768
3769         ev_view_set_scroll_adjustments (GTK_LAYOUT (view), NULL, NULL);
3770
3771         GTK_OBJECT_CLASS (ev_view_parent_class)->destroy (object);
3772 }
3773
3774 static void
3775 ev_view_set_property (GObject      *object,
3776                       guint         prop_id,
3777                       const GValue *value,
3778                       GParamSpec   *pspec)
3779 {
3780         EvView *view = EV_VIEW (object);
3781
3782         switch (prop_id) {
3783                 case PROP_CONTINUOUS:
3784                         ev_view_set_continuous (view, g_value_get_boolean (value));
3785                         break;
3786                 case PROP_DUAL_PAGE:
3787                         ev_view_set_dual_page (view, g_value_get_boolean (value));
3788                         break;
3789                 case PROP_FULLSCREEN:
3790                         ev_view_set_fullscreen (view, g_value_get_boolean (value));
3791                         break;
3792                 case PROP_PRESENTATION:
3793                         ev_view_set_presentation (view, g_value_get_boolean (value));
3794                         break;
3795                 case PROP_SIZING_MODE:
3796                         ev_view_set_sizing_mode (view, g_value_get_enum (value));
3797                         break;
3798                 case PROP_ZOOM:
3799                         ev_view_set_zoom (view, g_value_get_double (value), FALSE);
3800                         break;
3801                 case PROP_ROTATION:
3802                         ev_view_set_rotation (view, g_value_get_int (value));
3803                         break;
3804                 default:
3805                         G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
3806         }
3807 }
3808
3809 static AtkObject *
3810 ev_view_get_accessible (GtkWidget *widget)
3811 {
3812         static gboolean first_time = TRUE;
3813
3814         if (first_time) {
3815                 AtkObjectFactory *factory;
3816                 AtkRegistry *registry;
3817                 GType derived_type;
3818                 GType derived_atk_type;
3819
3820                 /*
3821                  * Figure out whether accessibility is enabled by looking at the
3822                  * type of the accessible object which would be created for
3823                  * the parent type of EvView.
3824                  */
3825                 derived_type = g_type_parent (EV_TYPE_VIEW);
3826
3827                 registry = atk_get_default_registry ();
3828                 factory = atk_registry_get_factory (registry,
3829                                                     derived_type);
3830                 derived_atk_type = atk_object_factory_get_accessible_type (factory);
3831                 if (g_type_is_a (derived_atk_type, GTK_TYPE_ACCESSIBLE))
3832                         atk_registry_set_factory_type (registry,
3833                                                        EV_TYPE_VIEW,
3834                                                        ev_view_accessible_factory_get_type ());
3835                 first_time = FALSE;
3836         }
3837         return GTK_WIDGET_CLASS (ev_view_parent_class)->get_accessible (widget);
3838 }
3839
3840 static void
3841 ev_view_get_property (GObject *object,
3842                       guint prop_id,
3843                       GValue *value,
3844                       GParamSpec *pspec)
3845 {
3846         EvView *view = EV_VIEW (object);
3847
3848         switch (prop_id) {
3849                 case PROP_FIND_STATUS:
3850                         g_value_set_string (value, view->find_status);
3851                         break;
3852                 case PROP_CONTINUOUS:
3853                         g_value_set_boolean (value, view->continuous);
3854                         break;
3855                 case PROP_DUAL_PAGE:
3856                         g_value_set_boolean (value, view->dual_page);
3857                         break;
3858                 case PROP_FULLSCREEN:
3859                         g_value_set_boolean (value, view->fullscreen);
3860                         break;
3861                 case PROP_PRESENTATION:
3862                         g_value_set_boolean (value, view->presentation);
3863                         break;
3864                 case PROP_SIZING_MODE:
3865                         g_value_set_enum (value, view->sizing_mode);
3866                         break;
3867                 case PROP_ZOOM:
3868                         g_value_set_double (value, view->scale);
3869                         break;
3870                 case PROP_ROTATION:
3871                         g_value_set_int (value, view->rotation);
3872                         break;
3873                 case PROP_HAS_SELECTION:
3874                         g_value_set_boolean (value,
3875                                              view->selection_info.selections != NULL);
3876                         break;
3877                 default:
3878                         G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
3879         }
3880 }
3881
3882 static void
3883 ev_view_class_init (EvViewClass *class)
3884 {
3885         GObjectClass *object_class = G_OBJECT_CLASS (class);
3886         GtkObjectClass *gtk_object_class = GTK_OBJECT_CLASS (class);
3887         GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
3888         GtkLayoutClass *layout_class = GTK_LAYOUT_CLASS (class);
3889         GtkBindingSet *binding_set;
3890
3891         object_class->finalize = ev_view_finalize;
3892         object_class->set_property = ev_view_set_property;
3893         object_class->get_property = ev_view_get_property;
3894
3895         widget_class->expose_event = ev_view_expose_event;
3896         widget_class->button_press_event = ev_view_button_press_event;
3897         widget_class->motion_notify_event = ev_view_motion_notify_event;
3898         widget_class->button_release_event = ev_view_button_release_event;
3899         widget_class->key_press_event = ev_view_key_press_event;
3900         widget_class->focus_in_event = ev_view_focus_in;
3901         widget_class->focus_out_event = ev_view_focus_out;
3902         widget_class->get_accessible = ev_view_get_accessible;
3903         widget_class->size_request = ev_view_size_request;
3904         widget_class->size_allocate = ev_view_size_allocate;
3905         widget_class->realize = ev_view_realize;
3906         widget_class->scroll_event = ev_view_scroll_event;
3907         widget_class->enter_notify_event = ev_view_enter_notify_event;
3908         widget_class->leave_notify_event = ev_view_leave_notify_event;
3909         widget_class->style_set = ev_view_style_set;
3910         widget_class->drag_data_get = ev_view_drag_data_get;
3911         widget_class->drag_motion = ev_view_drag_motion;
3912         widget_class->drag_data_received = ev_view_drag_data_received;
3913         widget_class->popup_menu = ev_view_popup_menu;
3914 #if GTK_CHECK_VERSION (2, 11, 7)
3915         widget_class->query_tooltip = ev_view_query_tooltip;
3916 #endif
3917
3918         gtk_object_class->destroy = ev_view_destroy;
3919
3920         layout_class->set_scroll_adjustments = ev_view_set_scroll_adjustments;
3921
3922         class->binding_activated = ev_view_scroll;
3923
3924         signals[SIGNAL_BINDING_ACTIVATED] = g_signal_new ("binding_activated",
3925                          G_TYPE_FROM_CLASS (object_class),
3926                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
3927                          G_STRUCT_OFFSET (EvViewClass, binding_activated),
3928                          NULL, NULL,
3929                          ev_marshal_VOID__ENUM_BOOLEAN,
3930                          G_TYPE_NONE, 2,
3931                          GTK_TYPE_SCROLL_TYPE,
3932                          G_TYPE_BOOLEAN);
3933
3934         signals[SIGNAL_ZOOM_INVALID] = g_signal_new ("zoom-invalid",
3935                          G_TYPE_FROM_CLASS (object_class),
3936                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
3937                          G_STRUCT_OFFSET (EvViewClass, zoom_invalid),
3938                          NULL, NULL,
3939                          ev_marshal_VOID__VOID,
3940                          G_TYPE_NONE, 0, G_TYPE_NONE);
3941         signals[SIGNAL_HANDLE_LINK] = g_signal_new ("handle-link",
3942                          G_TYPE_FROM_CLASS (object_class),
3943                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
3944                          G_STRUCT_OFFSET (EvViewClass, handle_link),
3945                          NULL, NULL,
3946                          g_cclosure_marshal_VOID__OBJECT,
3947                          G_TYPE_NONE, 1,
3948                          G_TYPE_OBJECT);
3949         signals[SIGNAL_EXTERNAL_LINK] = g_signal_new ("external-link",
3950                          G_TYPE_FROM_CLASS (object_class),
3951                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
3952                          G_STRUCT_OFFSET (EvViewClass, external_link),
3953                          NULL, NULL,
3954                          g_cclosure_marshal_VOID__OBJECT,
3955                          G_TYPE_NONE, 1,
3956                          G_TYPE_OBJECT);
3957         signals[SIGNAL_POPUP_MENU] = g_signal_new ("popup",
3958                          G_TYPE_FROM_CLASS (object_class),
3959                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
3960                          G_STRUCT_OFFSET (EvViewClass, popup_menu),
3961                          NULL, NULL,
3962                          g_cclosure_marshal_VOID__OBJECT,
3963                          G_TYPE_NONE, 1,
3964                          G_TYPE_OBJECT);
3965
3966
3967         g_object_class_install_property (object_class,
3968                                          PROP_FIND_STATUS,
3969                                          g_param_spec_string ("find-status",
3970                                                               "Find Status Message",
3971                                                               "The find status message",
3972                                                               NULL,
3973                                                               G_PARAM_READABLE));
3974
3975         g_object_class_install_property (object_class,
3976                                          PROP_CONTINUOUS,
3977                                          g_param_spec_boolean ("continuous",
3978                                                                "Continuous",
3979                                                                "Continuous scrolling mode",
3980                                                                TRUE,
3981                                                                G_PARAM_READWRITE));
3982
3983         g_object_class_install_property (object_class,
3984                                          PROP_DUAL_PAGE,
3985                                          g_param_spec_boolean ("dual-page",
3986                                                                "Dual Page",
3987                                                                "Two pages visible at once",
3988                                                                FALSE,
3989                                                                G_PARAM_READWRITE));
3990         g_object_class_install_property (object_class,
3991                                          PROP_FULLSCREEN,
3992                                          g_param_spec_boolean ("fullscreen",
3993                                                                "Full Screen",
3994                                                                "Draw page in a fullscreen fashion",
3995                                                                FALSE,
3996                                                                G_PARAM_READWRITE));
3997         g_object_class_install_property (object_class,
3998                                          PROP_PRESENTATION,
3999                                          g_param_spec_boolean ("presentation",
4000                                                                "Presentation",
4001                                                                "Draw page in presentation mode",
4002                                                                TRUE,
4003                                                                G_PARAM_READWRITE));
4004
4005         g_object_class_install_property (object_class,
4006                                          PROP_SIZING_MODE,
4007                                          g_param_spec_enum ("sizing-mode",
4008                                                             "Sizing Mode",
4009                                                             "Sizing Mode",
4010                                                             EV_TYPE_SIZING_MODE,
4011                                                             EV_SIZING_FIT_WIDTH,
4012                                                             G_PARAM_READWRITE));
4013
4014         g_object_class_install_property (object_class,
4015                                          PROP_ZOOM,
4016                                          g_param_spec_double ("zoom",
4017                                                               "Zoom factor",
4018                                                               "Zoom factor",
4019                                                               0,
4020                                                               G_MAXDOUBLE,
4021                                                               1.0,
4022                                                               G_PARAM_READWRITE));
4023         g_object_class_install_property (object_class,
4024                                          PROP_ROTATION,
4025                                          g_param_spec_double ("rotation",
4026                                                               "Rotation",
4027                                                               "Rotation",
4028                                                               0,
4029                                                               360,
4030                                                               0,
4031                                                               G_PARAM_READWRITE));
4032         g_object_class_install_property (object_class,
4033                                          PROP_HAS_SELECTION,
4034                                          g_param_spec_boolean ("has-selection",
4035                                                                "Has selection",
4036                                                                "The view has selections",
4037                                                                FALSE,
4038                                                                G_PARAM_READABLE));
4039
4040         binding_set = gtk_binding_set_by_class (class);
4041
4042         add_scroll_binding_keypad (binding_set, GDK_Left,  0, EV_SCROLL_STEP_BACKWARD, TRUE);
4043         add_scroll_binding_keypad (binding_set, GDK_Right, 0, EV_SCROLL_STEP_FORWARD,  TRUE);
4044         add_scroll_binding_keypad (binding_set, GDK_Left,  GDK_MOD1_MASK, EV_SCROLL_STEP_DOWN, TRUE);
4045         add_scroll_binding_keypad (binding_set, GDK_Right, GDK_MOD1_MASK, EV_SCROLL_STEP_UP,  TRUE);
4046         add_scroll_binding_keypad (binding_set, GDK_Up,    0, EV_SCROLL_STEP_BACKWARD, FALSE);
4047         add_scroll_binding_keypad (binding_set, GDK_Down,  0, EV_SCROLL_STEP_FORWARD,  FALSE);
4048         add_scroll_binding_keypad (binding_set, GDK_Up,    GDK_MOD1_MASK, EV_SCROLL_STEP_DOWN, FALSE);
4049         add_scroll_binding_keypad (binding_set, GDK_Down,  GDK_MOD1_MASK, EV_SCROLL_STEP_UP,  FALSE);
4050         gtk_binding_entry_add_signal (binding_set, GDK_H, 0, "binding_activated", 2, EV_TYPE_SCROLL_TYPE,
4051                                       EV_SCROLL_STEP_BACKWARD, G_TYPE_BOOLEAN, TRUE);
4052         gtk_binding_entry_add_signal (binding_set, GDK_J, 0, "binding_activated", 2, EV_TYPE_SCROLL_TYPE,
4053                                       EV_SCROLL_STEP_FORWARD, G_TYPE_BOOLEAN, FALSE);
4054         gtk_binding_entry_add_signal (binding_set, GDK_K, 0, "binding_activated", 2, EV_TYPE_SCROLL_TYPE,
4055                                       EV_SCROLL_STEP_BACKWARD, G_TYPE_BOOLEAN, FALSE);
4056         gtk_binding_entry_add_signal (binding_set, GDK_L, 0, "binding_activated", 2, EV_TYPE_SCROLL_TYPE,
4057                                       EV_SCROLL_STEP_FORWARD, G_TYPE_BOOLEAN, TRUE);
4058
4059 }
4060
4061 static void
4062 ev_view_init (EvView *view)
4063 {
4064         GTK_WIDGET_SET_FLAGS (view, GTK_CAN_FOCUS);
4065
4066         view->spacing = 5;
4067         view->scale = 1.0;
4068         view->current_page = 0;
4069         view->pressed_button = -1;
4070         view->cursor = EV_VIEW_CURSOR_NORMAL;
4071         view->drag_info.in_drag = FALSE;
4072         view->scroll_info.autoscrolling = FALSE;
4073         view->selection_info.selections = NULL;
4074         view->selection_info.in_selection = FALSE;
4075         view->selection_info.in_drag = FALSE;
4076         view->selection_mode = EV_VIEW_SELECTION_TEXT;
4077         view->continuous = TRUE;
4078         view->dual_page = FALSE;
4079         view->presentation = FALSE;
4080         view->presentation_state = EV_PRESENTATION_NORMAL;
4081         view->fullscreen = FALSE;
4082         view->sizing_mode = EV_SIZING_FIT_WIDTH;
4083         view->pending_scroll = SCROLL_TO_KEEP_POSITION;
4084         view->jump_to_find_result = TRUE;
4085         view->highlight_find_results = FALSE;
4086
4087         gtk_layout_set_hadjustment (GTK_LAYOUT (view), NULL);
4088         gtk_layout_set_vadjustment (GTK_LAYOUT (view), NULL);
4089
4090         gtk_drag_dest_set (GTK_WIDGET (view),
4091                            GTK_DEST_DEFAULT_ALL,
4092                            view_drop_targets,
4093                            G_N_ELEMENTS (view_drop_targets),
4094                            GDK_ACTION_COPY);
4095 }
4096
4097 /*** Callbacks ***/
4098
4099 static void
4100 find_changed_cb (EvDocument *document, int page, EvView *view)
4101 {
4102         double percent;
4103         int n_pages;
4104
4105         percent = ev_document_find_get_progress
4106                         (EV_DOCUMENT_FIND (view->document));
4107         n_pages = ev_page_cache_get_n_pages (view->page_cache);
4108
4109         if (view->jump_to_find_result == TRUE) {
4110                 jump_to_find_page (view, EV_VIEW_FIND_NEXT, 0);
4111                 jump_to_find_result (view);
4112         }
4113         update_find_status_message (view, percent * n_pages >= n_pages - 1 );
4114         if (view->current_page == page)
4115                 gtk_widget_queue_draw (GTK_WIDGET (view));
4116 }
4117
4118 static void
4119 job_finished_cb (EvPixbufCache *pixbuf_cache,
4120                  GdkRegion     *region,
4121                  EvView        *view)
4122 {
4123         if (region) {
4124                 gdk_window_invalidate_region (view->layout.bin_window,
4125                                               region, TRUE);
4126         } else {
4127                 gtk_widget_queue_draw (GTK_WIDGET (view));
4128         }
4129 }
4130
4131 static void
4132 page_changed_cb (EvPageCache *page_cache,
4133                  int          new_page,
4134                  EvView      *view)
4135 {
4136         if (view->current_page != new_page) {
4137                 gint x, y;
4138
4139                 view->current_page = new_page;
4140                 view->pending_scroll = SCROLL_TO_PAGE_POSITION;
4141
4142                 if (view->presentation)
4143                         ev_view_presentation_transition_start (view);
4144
4145                 gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
4146                 ev_view_handle_cursor_over_xy (view, x, y);
4147
4148                 gtk_widget_queue_resize (GTK_WIDGET (view));
4149         } else {
4150                 gtk_widget_queue_draw (GTK_WIDGET (view));
4151         }
4152
4153         if (EV_IS_DOCUMENT_FIND (view->document)) {
4154                 view->find_result = 0;
4155                 update_find_status_message (view, TRUE);
4156         }
4157 }
4158
4159 static void
4160 on_adjustment_value_changed (GtkAdjustment *adjustment,
4161                              EvView        *view)
4162 {
4163         int dx = 0, dy = 0;
4164         gint x, y;
4165         GList *children, *l;
4166
4167         if (! GTK_WIDGET_REALIZED (view))
4168                 return;
4169
4170         if (view->hadjustment) {
4171                 dx = view->scroll_x - (int) view->hadjustment->value;
4172                 view->scroll_x = (int) view->hadjustment->value;
4173         } else {
4174                 view->scroll_x = 0;
4175         }
4176
4177         if (view->vadjustment) {
4178                 dy = view->scroll_y - (int) view->vadjustment->value;
4179                 view->scroll_y = (int) view->vadjustment->value;
4180         } else {
4181                 view->scroll_y = 0;
4182         }
4183
4184         children = gtk_container_get_children (GTK_CONTAINER (view));
4185         for (l = children; l && l->data; l = g_list_next (l)) {
4186                 gint       child_x, child_y;
4187                 GtkWidget *child = (GtkWidget *)l->data;
4188
4189                 gtk_container_child_get (GTK_CONTAINER (view),
4190                                          child,
4191                                          "x", &child_x,
4192                                          "y", &child_y,
4193                                          NULL);
4194                 gtk_layout_move (GTK_LAYOUT (view), child, child_x + dx, child_y + dy);
4195         }
4196         g_list_free (children);
4197
4198         if (view->pending_resize)
4199                 gtk_widget_queue_draw (GTK_WIDGET (view));
4200         else
4201                 gdk_window_scroll (view->layout.bin_window, dx, dy);
4202
4203         gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
4204         ev_view_handle_cursor_over_xy (view, x, y);
4205
4206         if (view->document)
4207                 view_update_range_and_current_page (view);
4208 }
4209
4210 GtkWidget*
4211 ev_view_new (void)
4212 {
4213         GtkWidget *view;
4214
4215         view = g_object_new (EV_TYPE_VIEW, NULL);
4216
4217         return view;
4218 }
4219
4220 static void
4221 setup_caches (EvView *view)
4222 {
4223         view->page_cache = ev_page_cache_get (view->document);
4224         g_signal_connect (view->page_cache, "page-changed", G_CALLBACK (page_changed_cb), view);
4225         view->pixbuf_cache = ev_pixbuf_cache_new (GTK_WIDGET (view), view->document);
4226         g_signal_connect (view->pixbuf_cache, "job-finished", G_CALLBACK (job_finished_cb), view);
4227         page_changed_cb (view->page_cache,
4228                          ev_page_cache_get_current_page (view->page_cache),
4229                          view);
4230 }
4231
4232 static void
4233 clear_caches (EvView *view)
4234 {
4235         if (view->pixbuf_cache) {
4236                 g_object_unref (view->pixbuf_cache);
4237                 view->pixbuf_cache = NULL;
4238         }
4239
4240         if (view->page_cache) {
4241                 view->page_cache = NULL;
4242         }
4243 }
4244
4245 void
4246 ev_view_set_loading (EvView       *view,
4247                      gboolean      loading)
4248 {
4249         view->loading = loading;
4250         gtk_widget_queue_draw (GTK_WIDGET (view));
4251 }
4252
4253 static gboolean ev_view_autoscroll_cb (EvView *view)
4254 {
4255         gdouble speed, value;
4256
4257         /* If the user stops autoscrolling, autoscrolling will be
4258          * set to false but the timeout will continue; stop the timeout: */
4259         if (!view->scroll_info.autoscrolling) {
4260                 view->scroll_info.timeout_id = 0;
4261                 return FALSE;
4262         }
4263
4264         if (view->scroll_info.last_y > view->scroll_info.start_y &&
4265                 (view->scroll_info.last_y < view->scroll_info.start_y))
4266                 return TRUE;
4267
4268         /* Replace 100 with your speed of choice: The lower the faster.
4269          * Replace 3 with another speed of choice: The higher, the faster it accelerated
4270          *      based on the distance of the starting point from the mouse
4271          * (All also effected by the timeout interval of this callback) */
4272
4273         if (view->scroll_info.start_y > view->scroll_info.last_y)
4274                 speed = -pow ((((gdouble)view->scroll_info.start_y - view->scroll_info.last_y) / 100), 3);
4275         else
4276                 speed = pow ((((gdouble)view->scroll_info.last_y - view->scroll_info.start_y) / 100), 3);
4277
4278         value = gtk_adjustment_get_value (view->vadjustment);
4279         value = CLAMP (value + speed, 0, view->vadjustment->upper - view->vadjustment->page_size);
4280         gtk_adjustment_set_value (view->vadjustment, value);
4281
4282         return TRUE;
4283
4284 }
4285
4286 void ev_view_autoscroll(EvView *view)
4287 {
4288         view->scroll_info.autoscrolling = TRUE;
4289         view->scroll_info.timeout_id = g_timeout_add (20, (GSourceFunc)(ev_view_autoscroll_cb), view);
4290 }
4291
4292 void
4293 ev_view_set_document (EvView     *view,
4294                       EvDocument *document)
4295 {
4296         g_return_if_fail (EV_IS_VIEW (view));
4297
4298         view->loading = FALSE;
4299
4300         if (document != view->document) {
4301                 clear_caches (view);
4302
4303                 if (view->document) {
4304                         g_signal_handlers_disconnect_by_func (view->document,
4305                                                               find_changed_cb,
4306                                                               view);
4307                         g_object_unref (view->document);
4308                         view->page_cache = NULL;
4309
4310                 }
4311
4312                 view->document = document;
4313                 view->find_result = 0;
4314
4315                 if (view->document) {
4316                         g_object_ref (view->document);
4317                         if (EV_IS_DOCUMENT_FIND (view->document)) {
4318                                 g_signal_connect (view->document,
4319                                                   "find_changed",
4320                                                   G_CALLBACK (find_changed_cb),
4321                                                   view);
4322                         }
4323
4324                         setup_caches (view);
4325                 }
4326
4327                 gtk_widget_queue_resize (GTK_WIDGET (view));
4328         }
4329 }
4330
4331 /*** Zoom and sizing mode ***/
4332
4333 #define EPSILON 0.0000001
4334 void
4335 ev_view_set_zoom (EvView   *view,
4336                   double    factor,
4337                   gboolean  relative)
4338 {
4339         double scale;
4340
4341         if (relative)
4342                 scale = view->scale * factor;
4343         else
4344                 scale = factor;
4345
4346         scale = CLAMP (scale,
4347                        view->sizing_mode == EV_SIZING_FREE ? view->min_scale : 0,
4348                        view->max_scale);
4349
4350         if (ABS (view->scale - scale) < EPSILON)
4351                 return;
4352
4353         if (view->loading_text) {
4354                 cairo_surface_destroy (view->loading_text);
4355                 view->loading_text = NULL;
4356         }
4357
4358         view->scale = scale;
4359         view->pending_resize = TRUE;
4360
4361         gtk_widget_queue_resize (GTK_WIDGET (view));
4362
4363         g_object_notify (G_OBJECT (view), "zoom");
4364 }
4365
4366 double
4367 ev_view_get_zoom (EvView *view)
4368 {
4369         return view->scale;
4370 }
4371
4372 void
4373 ev_view_set_screen_dpi (EvView  *view,
4374                         gdouble  dpi)
4375 {
4376         g_return_if_fail (EV_IS_VIEW (view));
4377         g_return_if_fail (dpi > 0);
4378
4379         view->dpi = dpi;
4380         view->min_scale = MIN_SCALE * dpi / 72.0;
4381         view->max_scale = MAX_SCALE * dpi / 72.0;
4382 }
4383
4384 gboolean
4385 ev_view_get_continuous (EvView *view)
4386 {
4387         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
4388
4389         return view->continuous;
4390 }
4391
4392 void
4393 ev_view_set_continuous (EvView   *view,
4394                         gboolean  continuous)
4395 {
4396         g_return_if_fail (EV_IS_VIEW (view));
4397
4398         continuous = continuous != FALSE;
4399
4400         if (view->continuous != continuous) {
4401                 view->continuous = continuous;
4402                 view->pending_scroll = SCROLL_TO_PAGE_POSITION;
4403                 gtk_widget_queue_resize (GTK_WIDGET (view));
4404         }
4405
4406         g_object_notify (G_OBJECT (view), "continuous");
4407 }
4408
4409 gboolean
4410 ev_view_get_dual_page (EvView *view)
4411 {
4412         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
4413
4414         return view->dual_page;
4415 }
4416
4417 void
4418 ev_view_set_dual_page (EvView   *view,
4419                        gboolean  dual_page)
4420 {
4421         g_return_if_fail (EV_IS_VIEW (view));
4422
4423         dual_page = dual_page != FALSE;
4424
4425         if (view->dual_page == dual_page)
4426                 return;
4427
4428         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
4429         view->dual_page = dual_page;
4430         /* FIXME: if we're keeping the pixbuf cache around, we should extend the
4431          * preload_cache_size to be 2 if dual_page is set.
4432          */
4433         gtk_widget_queue_resize (GTK_WIDGET (view));
4434
4435         g_object_notify (G_OBJECT (view), "dual-page");
4436 }
4437
4438 void
4439 ev_view_set_fullscreen (EvView   *view,
4440                          gboolean  fullscreen)
4441 {
4442         g_return_if_fail (EV_IS_VIEW (view));
4443
4444         fullscreen = fullscreen != FALSE;
4445
4446         if (view->fullscreen == fullscreen)
4447                 return;
4448
4449         view->fullscreen = fullscreen;
4450         gtk_widget_queue_resize (GTK_WIDGET (view));
4451
4452         g_object_notify (G_OBJECT (view), "fullscreen");
4453 }
4454
4455 gboolean
4456 ev_view_get_fullscreen (EvView *view)
4457 {
4458         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
4459
4460         return view->fullscreen;
4461 }
4462
4463 void
4464 ev_view_set_presentation (EvView   *view,
4465                           gboolean  presentation)
4466 {
4467         g_return_if_fail (EV_IS_VIEW (view));
4468
4469         presentation = presentation != FALSE;
4470
4471         if (view->presentation == presentation)
4472                 return;
4473
4474         if (!presentation)
4475                 view->presentation_state = EV_PRESENTATION_NORMAL;
4476
4477         view->presentation = presentation;
4478         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
4479
4480         if (presentation) {
4481                 view->sizing_mode_saved = view->sizing_mode;
4482                 view->scale_saved = view->scale;
4483                 ev_view_set_sizing_mode (view, EV_SIZING_BEST_FIT);
4484         } else {
4485                 ev_view_set_sizing_mode (view, view->sizing_mode_saved);
4486                 ev_view_set_zoom (view, view->scale_saved, FALSE);
4487         }
4488
4489         gtk_widget_queue_resize (GTK_WIDGET (view));
4490
4491         if (presentation)
4492                 ev_view_presentation_transition_start (view);
4493         else
4494                 ev_view_presentation_transition_stop (view);
4495
4496         if (GTK_WIDGET_REALIZED (view)) {
4497                 if (view->presentation)
4498                         gdk_window_set_background (view->layout.bin_window,
4499                                                    &GTK_WIDGET (view)->style->black);
4500                 else
4501                         gdk_window_set_background (view->layout.bin_window,
4502                                                    &GTK_WIDGET (view)->style->mid [GTK_STATE_NORMAL]);
4503         }
4504
4505         g_object_notify (G_OBJECT (view), "presentation");
4506 }
4507
4508 gboolean
4509 ev_view_get_presentation (EvView *view)
4510 {
4511         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
4512
4513         return view->presentation;
4514 }
4515
4516 static gboolean
4517 transition_next_page (EvView *view)
4518 {
4519         ev_view_next_page (view);
4520
4521         return FALSE;
4522 }
4523
4524 static void
4525 ev_view_presentation_transition_stop (EvView *view)
4526 {
4527         if (view->trans_timeout_id > 0)
4528                 g_source_remove (view->trans_timeout_id);
4529         view->trans_timeout_id = 0;
4530 }
4531
4532 static void
4533 ev_view_presentation_transition_start (EvView *view)
4534 {
4535         gdouble duration;
4536
4537         if (!EV_IS_DOCUMENT_TRANSITION (view->document))
4538                 return;
4539
4540         ev_view_presentation_transition_stop (view);
4541
4542         duration = ev_document_transition_get_page_duration (EV_DOCUMENT_TRANSITION (view->document),
4543                                                              view->current_page);
4544         if (duration > 0) {
4545 #if GLIB_CHECK_VERSION (2, 13, 0)
4546                 view->trans_timeout_id =
4547                         g_timeout_add_seconds (duration,
4548                                                (GSourceFunc) transition_next_page,
4549                                                view);
4550 #else
4551                 view->trans_timeout_id =
4552                         g_timeout_add (duration * 1000,
4553                                        (GSourceFunc) transition_next_page,
4554                                        view);
4555 #endif
4556         }
4557 }
4558
4559 void
4560 ev_view_set_sizing_mode (EvView       *view,
4561                          EvSizingMode  sizing_mode)
4562 {
4563         g_return_if_fail (EV_IS_VIEW (view));
4564
4565         if (view->sizing_mode == sizing_mode)
4566                 return;
4567
4568         view->sizing_mode = sizing_mode;
4569         gtk_widget_queue_resize (GTK_WIDGET (view));
4570
4571         g_object_notify (G_OBJECT (view), "sizing-mode");
4572 }
4573
4574 EvSizingMode
4575 ev_view_get_sizing_mode (EvView *view)
4576 {
4577         g_return_val_if_fail (EV_IS_VIEW (view), EV_SIZING_FREE);
4578
4579         return view->sizing_mode;
4580 }
4581
4582 gboolean
4583 ev_view_can_zoom_in (EvView *view)
4584 {
4585         return view->scale * ZOOM_IN_FACTOR <= view->max_scale;
4586 }
4587
4588 gboolean
4589 ev_view_can_zoom_out (EvView *view)
4590 {
4591         return view->scale * ZOOM_OUT_FACTOR >= view->min_scale;
4592 }
4593
4594 void
4595 ev_view_zoom_in (EvView *view)
4596 {
4597         g_return_if_fail (view->sizing_mode == EV_SIZING_FREE);
4598
4599         if (view->presentation)
4600                 return;
4601
4602         view->pending_scroll = SCROLL_TO_CENTER;
4603         ev_view_set_zoom (view, ZOOM_IN_FACTOR, TRUE);
4604 }
4605
4606 void
4607 ev_view_zoom_out (EvView *view)
4608 {
4609         g_return_if_fail (view->sizing_mode == EV_SIZING_FREE);
4610
4611         if (view->presentation)
4612                 return;
4613
4614         view->pending_scroll = SCROLL_TO_CENTER;
4615         ev_view_set_zoom (view, ZOOM_OUT_FACTOR, TRUE);
4616 }
4617
4618 void
4619 ev_view_rotate_right (EvView *view)
4620 {
4621         int rotation = view->rotation + 90;
4622
4623         if (rotation >= 360) {
4624                 rotation -= 360;
4625         }
4626
4627         ev_view_set_rotation (view, rotation);
4628 }
4629
4630 void
4631 ev_view_rotate_left (EvView *view)
4632 {
4633         int rotation = view->rotation - 90;
4634
4635         if (rotation < 0) {
4636                 rotation += 360;
4637         }
4638
4639         ev_view_set_rotation (view, rotation);
4640 }
4641
4642 void
4643 ev_view_set_rotation (EvView *view, int rotation)
4644 {
4645         view->rotation = rotation;
4646
4647         if (view->pixbuf_cache) {
4648                 ev_pixbuf_cache_clear (view->pixbuf_cache);
4649                 gtk_widget_queue_resize (GTK_WIDGET (view));
4650         }
4651
4652         if (rotation != 0)
4653                 clear_selection (view);
4654
4655         g_object_notify (G_OBJECT (view), "rotation");
4656 }
4657
4658 int
4659 ev_view_get_rotation (EvView *view)
4660 {
4661         return view->rotation;
4662 }
4663
4664 static double
4665 zoom_for_size_fit_width (int doc_width,
4666                          int doc_height,
4667                          int target_width,
4668                          int target_height,
4669                          int vsb_width)
4670 {
4671         double scale;
4672
4673         scale = (double)target_width / doc_width;
4674
4675         if (doc_height * scale > target_height)
4676                 scale = (double) (target_width - vsb_width) / doc_width;
4677
4678         return scale;
4679 }
4680
4681 static double
4682 zoom_for_size_fit_height (int doc_width,
4683                           int doc_height,
4684                           int target_width,
4685                           int target_height,
4686                           int vsb_height)
4687 {
4688         double scale;
4689
4690         scale = (double)target_height / doc_height;
4691
4692         if (doc_width * scale > target_width)
4693                 scale = (double) (target_height - vsb_height) / doc_height;
4694
4695         return scale;
4696 }
4697
4698 static double
4699 zoom_for_size_best_fit (int doc_width,
4700                         int doc_height,
4701                         int target_width,
4702                         int target_height,
4703                         int vsb_width,
4704                         int hsb_width)
4705 {
4706         double w_scale;
4707         double h_scale;
4708
4709         w_scale = (double)target_width / doc_width;
4710         h_scale = (double)target_height / doc_height;
4711
4712         if (doc_height * w_scale > target_height)
4713                 w_scale = (double) (target_width - vsb_width) / doc_width;
4714         if (doc_width * h_scale > target_width)
4715                 h_scale = (double) (target_height - hsb_width) / doc_height;
4716
4717         return MIN (w_scale, h_scale);
4718 }
4719
4720
4721 static void
4722 ev_view_zoom_for_size_presentation (EvView *view,
4723                                     int     width,
4724                                     int     height)
4725 {
4726         int doc_width, doc_height;
4727         gdouble scale;
4728
4729         ev_page_cache_get_size (view->page_cache,
4730                                 view->current_page,
4731                                 view->rotation,
4732                                 1.0,
4733                                 &doc_width,
4734                                 &doc_height);
4735         scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, 0, 0);
4736         ev_view_set_zoom (view, scale, FALSE);
4737 }
4738
4739 static void
4740 ev_view_zoom_for_size_continuous_and_dual_page (EvView *view,
4741                            int     width,
4742                            int     height,
4743                            int     vsb_width,
4744                            int     hsb_height)
4745 {
4746         int doc_width, doc_height;
4747         GtkBorder border;
4748         gdouble scale;
4749
4750         ev_page_cache_get_max_width (view->page_cache,
4751                                      view->rotation,
4752                                      1.0,
4753                                      &doc_width);
4754         ev_page_cache_get_max_height (view->page_cache,
4755                                       view->rotation,
4756                                       1.0,
4757                                       &doc_height);
4758         compute_border (view, doc_width, doc_height, &border);
4759
4760         doc_width = doc_width * 2;
4761         width -= (2 * (border.left + border.right) + 3 * view->spacing);
4762         height -= (border.top + border.bottom + 2 * view->spacing - 1);
4763
4764         /* FIXME: We really need to calculate the overall height here, not the
4765          * page height.  We assume there's always a vertical scrollbar for
4766          * now.  We need to fix this. */
4767         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
4768                 scale = zoom_for_size_fit_width (doc_width, doc_height, width - vsb_width, height, 0);
4769         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
4770                 scale = zoom_for_size_best_fit (doc_width, doc_height, width - vsb_width, height, 0, hsb_height);
4771         else
4772                 g_assert_not_reached ();
4773
4774         ev_view_set_zoom (view, scale, FALSE);
4775 }
4776
4777 static void
4778 ev_view_zoom_for_size_continuous (EvView *view,
4779                                   int     width,
4780                                   int     height,
4781                                   int     vsb_width,
4782                                   int     hsb_height)
4783 {
4784         int doc_width, doc_height;
4785         GtkBorder border;
4786         gdouble scale;
4787
4788         ev_page_cache_get_max_width (view->page_cache,
4789                                      view->rotation,
4790                                      1.0,
4791                                      &doc_width);
4792         ev_page_cache_get_max_height (view->page_cache,
4793                                       view->rotation,
4794                                       1.0,
4795                                       &doc_height);
4796         compute_border (view, doc_width, doc_height, &border);
4797
4798         width -= (border.left + border.right + 2 * view->spacing);
4799         height -= (border.top + border.bottom + 2 * view->spacing - 1);
4800
4801         /* FIXME: We really need to calculate the overall height here, not the
4802          * page height.  We assume there's always a vertical scrollbar for
4803          * now.  We need to fix this. */
4804         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
4805                 scale = zoom_for_size_fit_width (doc_width, doc_height, width - vsb_width, height, 0);
4806         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
4807                 scale = zoom_for_size_best_fit (doc_width, doc_height, width - vsb_width, height, 0, hsb_height);
4808         else
4809                 g_assert_not_reached ();
4810
4811         ev_view_set_zoom (view, scale, FALSE);
4812 }
4813
4814 static void
4815 ev_view_zoom_for_size_dual_page (EvView *view,
4816                                  int     width,
4817                                  int     height,
4818                                  int     vsb_width,
4819                                  int     hsb_height)
4820 {
4821         GtkBorder border;
4822         gint doc_width, doc_height;
4823         gdouble scale;
4824         gint other_page;
4825
4826         other_page = view->current_page ^ 1;
4827
4828         /* Find the largest of the two. */
4829         ev_page_cache_get_size (view->page_cache,
4830                                 view->current_page,
4831                                 view->rotation,
4832                                 1.0,
4833                                 &doc_width, &doc_height);
4834
4835         if (other_page < ev_page_cache_get_n_pages (view->page_cache)) {
4836                 gint width_2, height_2;
4837                 ev_page_cache_get_size (view->page_cache,
4838                                         other_page,
4839                                         view->rotation,
4840                                         1.0,
4841                                         &width_2, &height_2);
4842                 if (width_2 > doc_width)
4843                         doc_width = width_2;
4844                 if (height_2 > doc_height)
4845                         doc_height = height_2;
4846         }
4847         compute_border (view, doc_width, doc_height, &border);
4848
4849         doc_width = doc_width * 2;
4850         width -= ((border.left + border.right)* 2 + 3 * view->spacing);
4851         height -= (border.top + border.bottom + 2 * view->spacing);
4852
4853         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
4854                 scale = zoom_for_size_fit_width (doc_width, doc_height, width, height, vsb_width);
4855         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
4856                 scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, vsb_width, hsb_height);
4857         else
4858                 g_assert_not_reached ();
4859
4860         ev_view_set_zoom (view, scale, FALSE);
4861 }
4862
4863 static void
4864 ev_view_zoom_for_size_single_page (EvView *view,
4865                                    int     width,
4866                                    int     height,
4867                                    int     vsb_width,
4868                                    int     hsb_height)
4869 {
4870         int doc_width, doc_height;
4871         GtkBorder border;
4872         gdouble scale;
4873
4874         ev_page_cache_get_size (view->page_cache,
4875                                 view->current_page,
4876                                 view->rotation,
4877                                 1.0,
4878                                 &doc_width,
4879                                 &doc_height);
4880         /* Get an approximate border */
4881         compute_border (view, width, height, &border);
4882
4883         width -= (border.left + border.right + 2 * view->spacing);
4884         height -= (border.top + border.bottom + 2 * view->spacing);
4885
4886         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
4887                 scale = zoom_for_size_fit_width (doc_width, doc_height, width, height, vsb_width);
4888         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
4889                 scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, vsb_width, hsb_height);
4890         else
4891                 g_assert_not_reached ();
4892
4893         ev_view_set_zoom (view, scale, FALSE);
4894 }
4895
4896 static void
4897 ev_view_set_zoom_for_size (EvView *view,
4898                            int     width,
4899                            int     height,
4900                            int     vsb_width,
4901                            int     hsb_height)
4902 {
4903         g_return_if_fail (EV_IS_VIEW (view));
4904         g_return_if_fail (view->sizing_mode == EV_SIZING_FIT_WIDTH ||
4905                           view->sizing_mode == EV_SIZING_BEST_FIT);
4906         g_return_if_fail (width >= 0);
4907         g_return_if_fail (height >= 0);
4908
4909         if (view->document == NULL)
4910                 return;
4911
4912         if (view->presentation)
4913                 ev_view_zoom_for_size_presentation (view, width, height);
4914         else if (view->continuous && view->dual_page)
4915                 ev_view_zoom_for_size_continuous_and_dual_page (view, width, height, vsb_width, hsb_height);
4916         else if (view->continuous)
4917                 ev_view_zoom_for_size_continuous (view, width, height, vsb_width, hsb_height);
4918         else if (view->dual_page)
4919                 ev_view_zoom_for_size_dual_page (view, width, height, vsb_width, hsb_height);
4920         else
4921                 ev_view_zoom_for_size_single_page (view, width, height, vsb_width, hsb_height);
4922 }
4923
4924 /*** Find ***/
4925 static void
4926 update_find_status_message (EvView *view, gboolean this_page)
4927 {
4928         char *message;
4929
4930         if (this_page) {
4931                 int results;
4932
4933                 results = ev_document_find_get_n_results
4934                                 (EV_DOCUMENT_FIND (view->document),
4935                                  view->current_page);
4936                 /* TRANS: Sometimes this could be better translated as
4937                    "%d hit(s) on this page".  Therefore this string
4938                    contains plural cases. */
4939                 message = g_strdup_printf (ngettext ("%d found on this page",
4940                                                      "%d found on this page",
4941                                                      results),
4942                                            results);
4943         } else {
4944                 double percent;
4945
4946                 percent = ev_document_find_get_progress
4947                                 (EV_DOCUMENT_FIND (view->document));
4948                 message = g_strdup_printf (_("%3d%% remaining to search"),
4949                                            (int) ((1.0 - percent) * 100));
4950
4951         }
4952         ev_view_set_find_status (view, message);
4953         g_free (message);
4954 }
4955
4956 const char *
4957 ev_view_get_find_status (EvView *view)
4958 {
4959         g_return_val_if_fail (EV_IS_VIEW (view), NULL);
4960
4961         return view->find_status;
4962 }
4963
4964 static void
4965 ev_view_set_find_status (EvView *view, const char *message)
4966 {
4967         g_return_if_fail (EV_IS_VIEW (view));
4968
4969         g_free (view->find_status);
4970         view->find_status = g_strdup (message);
4971         g_object_notify (G_OBJECT (view), "find-status");
4972 }
4973
4974 static void
4975 jump_to_find_result (EvView *view)
4976 {
4977         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
4978         EvRectangle rect;
4979         GdkRectangle view_rect;
4980         int n_results;
4981         int page = view->current_page;
4982
4983         n_results = ev_document_find_get_n_results (find, page);
4984
4985         if (n_results > 0  && view->find_result < n_results) {
4986                 ev_document_find_get_result
4987                         (find, page, view->find_result, &rect);
4988
4989                 doc_rect_to_view_rect (view, page, &rect, &view_rect);
4990                 ensure_rectangle_is_visible (view, &view_rect);
4991         }
4992 }
4993
4994 /**
4995  * jump_to_find_page
4996  * @view: #EvView instance
4997  * @direction: Direction to look
4998  * @shift: Shift from current page
4999  *
5000  * Jumps to the first page that has occurences of searched word.
5001  * Uses a direction where to look and a shift from current page.
5002  *
5003  */
5004 static void
5005 jump_to_find_page (EvView *view, EvViewFindDirection direction, gint shift)
5006 {
5007         int n_pages, i;
5008
5009         n_pages = ev_page_cache_get_n_pages (view->page_cache);
5010
5011         for (i = 0; i < n_pages; i++) {
5012                 int has_results;
5013                 int page;
5014
5015                 if (direction == EV_VIEW_FIND_NEXT)
5016                         page = view->current_page + i;
5017                 else
5018                         page = view->current_page - i;
5019                 page += shift;
5020
5021                 if (page >= n_pages) {
5022                         page = page - n_pages;
5023                 }
5024                 if (page < 0)
5025                         page = page + n_pages;
5026
5027                 has_results = ev_document_find_page_has_results
5028                                 (EV_DOCUMENT_FIND (view->document), page);
5029                 if (has_results == -1) {
5030                         break;
5031                 } else if (has_results == 1) {
5032                         ev_page_cache_set_current_page (view->page_cache, page);
5033                         break;
5034                 }
5035         }
5036 }
5037
5038 gboolean
5039 ev_view_can_find_next (EvView *view)
5040 {
5041         if (EV_IS_DOCUMENT_FIND (view->document)) {
5042                 EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
5043                 int i, n_pages;
5044
5045                 n_pages = ev_page_cache_get_n_pages (view->page_cache);
5046                 for (i = 0; i < n_pages; i++) {
5047                         if (ev_document_find_get_n_results (find, i) > 0) {
5048                                 return TRUE;
5049                         }
5050                 }
5051         }
5052
5053         return FALSE;
5054 }
5055
5056 void
5057 ev_view_find_next (EvView *view)
5058 {
5059         int n_results, n_pages;
5060         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
5061
5062         n_results = ev_document_find_get_n_results (find, view->current_page);
5063
5064         n_pages = ev_page_cache_get_n_pages (view->page_cache);
5065
5066         view->find_result++;
5067
5068         if (view->find_result >= n_results) {
5069
5070                 view->find_result = 0;
5071                 jump_to_find_page (view, EV_VIEW_FIND_NEXT, 1);
5072                 jump_to_find_result (view);
5073         } else {
5074                 jump_to_find_result (view);
5075                 gtk_widget_queue_draw (GTK_WIDGET (view));
5076         }
5077 }
5078
5079 gboolean
5080 ev_view_can_find_previous (EvView *view)
5081 {
5082         if (EV_IS_DOCUMENT_FIND (view->document)) {
5083                 EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
5084                 int i, n_pages;
5085
5086                 n_pages = ev_page_cache_get_n_pages (view->page_cache);
5087                 for (i = n_pages - 1; i >= 0; i--) {
5088                         if (ev_document_find_get_n_results (find, i) > 0) {
5089                                 return TRUE;
5090                         }
5091                 }
5092         }
5093
5094         return FALSE;
5095 }
5096 void
5097 ev_view_find_previous (EvView *view)
5098 {
5099         int n_results, n_pages;
5100         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
5101         EvPageCache *page_cache;
5102
5103         page_cache = ev_page_cache_get (view->document);
5104
5105         n_results = ev_document_find_get_n_results (find, view->current_page);
5106
5107         n_pages = ev_page_cache_get_n_pages (page_cache);
5108
5109         view->find_result--;
5110
5111         if (view->find_result < 0) {
5112
5113                 jump_to_find_page (view, EV_VIEW_FIND_PREV, -1);
5114                 view->find_result = ev_document_find_get_n_results (find, view->current_page) - 1;
5115                 jump_to_find_result (view);
5116         } else {
5117                 jump_to_find_result (view);
5118                 gtk_widget_queue_draw (GTK_WIDGET (view));
5119         }
5120 }
5121
5122 void ev_view_search_changed (EvView *view)
5123 {
5124         /* search string has changed, focus on new search result */
5125         view->jump_to_find_result = TRUE;
5126 }
5127
5128 void ev_view_set_highlight_search (EvView *view, gboolean value)
5129 {
5130         view->highlight_find_results = value;
5131         gtk_widget_queue_draw (GTK_WIDGET (view));
5132 }
5133
5134 /*** Selections ***/
5135
5136 /* compute_new_selection_rect/text calculates the area currently selected by
5137  * view_rect.  each handles a different mode;
5138  */
5139 static GList *
5140 compute_new_selection_rect (EvView       *view,
5141                             GdkPoint     *start,
5142                             GdkPoint     *stop)
5143 {
5144         GdkRectangle view_rect;
5145         int n_pages, i;
5146         GList *list = NULL;
5147
5148         g_assert (view->selection_mode == EV_VIEW_SELECTION_RECTANGLE);
5149
5150         view_rect.x = MIN (start->x, stop->x);
5151         view_rect.y = MIN (start->y, stop->y);
5152         view_rect.width = MAX (start->x, stop->x) - view_rect.x;
5153         view_rect.width = MAX (start->y, stop->y) - view_rect.y;
5154
5155         n_pages = ev_page_cache_get_n_pages (view->page_cache);
5156
5157         for (i = 0; i < n_pages; i++) {
5158                 GdkRectangle page_area;
5159                 GtkBorder border;
5160
5161                 if (get_page_extents (view, i, &page_area, &border)) {
5162                         GdkRectangle overlap;
5163
5164                         if (gdk_rectangle_intersect (&page_area, &view_rect, &overlap)) {
5165                                 EvViewSelection *selection;
5166
5167                                 selection = g_new0 (EvViewSelection, 1);
5168                                 selection->page = i;
5169                                 view_rect_to_doc_rect (view, &overlap, &page_area,
5170                                                        &(selection->rect));
5171
5172                                 list = g_list_append (list, selection);
5173                         }
5174                 }
5175         }
5176
5177         return list;
5178 }
5179
5180 static gboolean
5181 gdk_rectangle_point_in (GdkRectangle *rectangle,
5182                         GdkPoint     *point)
5183 {
5184         return rectangle->x <= point->x &&
5185                 rectangle->y <= point->y &&
5186                 point->x < rectangle->x + rectangle->width &&
5187                 point->y < rectangle->y + rectangle->height;
5188 }
5189
5190 static GList *
5191 compute_new_selection_text (EvView          *view,
5192                             EvSelectionStyle style,
5193                             GdkPoint        *start,
5194                             GdkPoint        *stop)
5195 {
5196         int n_pages, i, first, last;
5197         GList *list = NULL;
5198         EvViewSelection *selection;
5199         gint width, height;
5200         int start_page, end_page;
5201
5202         g_assert (view->selection_mode == EV_VIEW_SELECTION_TEXT);
5203
5204         n_pages = ev_page_cache_get_n_pages (view->page_cache);
5205
5206         /* First figure out the range of pages the selection
5207          * affects. */
5208         first = n_pages;
5209         last = 0;
5210         if (view->continuous) {
5211                 start_page = 0;
5212                 end_page = n_pages;
5213         } else if (view->dual_page) {
5214                 start_page = view->start_page;
5215                 end_page = view->end_page + 1;
5216         } else {
5217                 start_page = view->current_page;
5218                 end_page = view->current_page + 1;
5219         }
5220
5221         for (i = start_page; i < end_page; i++) {
5222                 GdkRectangle page_area;
5223                 GtkBorder border;
5224
5225                 get_page_extents (view, i, &page_area, &border);
5226                 if (gdk_rectangle_point_in (&page_area, start) ||
5227                     gdk_rectangle_point_in (&page_area, stop)) {
5228                         if (first == n_pages)
5229                                 first = i;
5230                         last = i;
5231                 }
5232
5233         }
5234
5235         /* Now create a list of EvViewSelection's for the affected
5236          * pages.  This could be an empty list, a list of just one
5237          * page or a number of pages.*/
5238         for (i = first; i < last + 1; i++) {
5239                 GdkRectangle page_area;
5240                 GtkBorder border;
5241                 GdkPoint *point;
5242
5243                 ev_page_cache_get_size (view->page_cache, i,
5244                                         view->rotation,
5245                                         1.0, &width, &height);
5246
5247                 selection = g_new0 (EvViewSelection, 1);
5248                 selection->page = i;
5249                 selection->style = style;
5250                 selection->rect.x1 = selection->rect.y1 = 0;
5251                 selection->rect.x2 = width;
5252                 selection->rect.y2 = height;
5253
5254                 get_page_extents (view, i, &page_area, &border);
5255
5256                 if (gdk_rectangle_point_in (&page_area, start))
5257                         point = start;
5258                 else
5259                         point = stop;
5260
5261                 if (i == first)
5262                         view_point_to_doc_point (view, point, &page_area,
5263                                                  &selection->rect.x1,
5264                                                  &selection->rect.y1);
5265
5266                 /* If the selection is contained within just one page,
5267                  * make sure we don't write 'start' into both points
5268                  * in selection->rect. */
5269                 if (first == last)
5270                         point = stop;
5271
5272                 if (i == last)
5273                         view_point_to_doc_point (view, point, &page_area,
5274                                                  &selection->rect.x2,
5275                                                  &selection->rect.y2);
5276
5277                 list = g_list_append (list, selection);
5278         }
5279
5280         return list;
5281 }
5282
5283 /* This function takes the newly calculated list, and figures out which regions
5284  * have changed.  It then queues a redraw approporiately.
5285  */
5286 static void
5287 merge_selection_region (EvView *view,
5288                         GList  *new_list)
5289 {
5290         GList *old_list;
5291         GList *new_list_ptr, *old_list_ptr;
5292
5293         /* Update the selection */
5294         old_list = ev_pixbuf_cache_get_selection_list (view->pixbuf_cache);
5295         g_list_foreach (view->selection_info.selections, (GFunc)selection_free, NULL);
5296         view->selection_info.selections = new_list;
5297         ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, new_list);
5298         g_object_notify (G_OBJECT (view), "has-selection");
5299
5300         new_list_ptr = new_list;
5301         old_list_ptr = old_list;
5302
5303         while (new_list_ptr || old_list_ptr) {
5304                 EvViewSelection *old_sel, *new_sel;
5305                 int cur_page;
5306                 GdkRegion *region = NULL;
5307
5308                 new_sel = (new_list_ptr) ? (new_list_ptr->data) : NULL;
5309                 old_sel = (old_list_ptr) ? (old_list_ptr->data) : NULL;
5310
5311                 /* Assume that the lists are in order, and we run through them
5312                  * comparing them, one page at a time.  We come out with the
5313                  * first page we see. */
5314                 if (new_sel && old_sel) {
5315                         if (new_sel->page < old_sel->page) {
5316                                 new_list_ptr = new_list_ptr->next;
5317                                 old_sel = NULL;
5318                         } else if (new_sel->page > old_sel->page) {
5319                                 old_list_ptr = old_list_ptr->next;
5320                                 new_sel = NULL;
5321                         } else {
5322                                 new_list_ptr = new_list_ptr->next;
5323                                 old_list_ptr = old_list_ptr->next;
5324                         }
5325                 } else if (new_sel) {
5326                         new_list_ptr = new_list_ptr->next;
5327                 } else if (old_sel) {
5328                         old_list_ptr = old_list_ptr->next;
5329                 }
5330
5331                 g_assert (new_sel || old_sel);
5332
5333                 /* is the page we're looking at on the screen?*/
5334                 cur_page = new_sel ? new_sel->page : old_sel->page;
5335                 if (cur_page < view->start_page || cur_page > view->end_page)
5336                         continue;
5337
5338                 /* seed the cache with a new page.  We are going to need the new
5339                  * region too. */
5340                 if (new_sel) {
5341                         GdkRegion *tmp_region = NULL;
5342
5343                         ev_pixbuf_cache_get_selection_surface (view->pixbuf_cache,
5344                                                                cur_page,
5345                                                                view->scale,
5346                                                                &tmp_region);
5347
5348                         if (tmp_region) {
5349                                 new_sel->covered_region = gdk_region_copy (tmp_region);
5350                         }
5351                 }
5352
5353                 /* Now we figure out what needs redrawing */
5354                 if (old_sel && new_sel) {
5355                         if (old_sel->covered_region && new_sel->covered_region) {
5356                                 /* We only want to redraw the areas that have
5357                                  * changed, so we xor the old and new regions
5358                                  * and redraw if it's different */
5359                                 region = gdk_region_copy (old_sel->covered_region);
5360                                 gdk_region_xor (region, new_sel->covered_region);
5361                                 if (gdk_region_empty (region)) {
5362                                         gdk_region_destroy (region);
5363                                         region = NULL;
5364                                 }
5365                         } else if (old_sel->covered_region) {
5366                                 region = gdk_region_copy (old_sel->covered_region);
5367                         } else if (new_sel->covered_region) {
5368                                 region = gdk_region_copy (new_sel->covered_region);
5369                         }
5370                 } else if (old_sel && !new_sel) {
5371                         if (old_sel->covered_region && !gdk_region_empty (old_sel->covered_region)) {
5372                                 region = gdk_region_copy (old_sel->covered_region);
5373                         }
5374                 } else if (!old_sel && new_sel) {
5375                         if (new_sel->covered_region && !gdk_region_empty (new_sel->covered_region)) {
5376                                 region = gdk_region_copy (new_sel->covered_region);
5377                         }
5378                 } else {
5379                         g_assert_not_reached ();
5380                 }
5381
5382                 /* Redraw the damaged region! */
5383                 if (region) {
5384                         GdkRectangle page_area;
5385                         GtkBorder border;
5386
5387                         /* I don't know why but the region is smaller
5388                          * than expected. This hack fixes it, I guess
5389                          * 10 pixels more won't hurt
5390                          */
5391                         gdk_region_shrink (region, -5, -5);
5392
5393                         get_page_extents (view, cur_page, &page_area, &border);
5394                         gdk_region_offset (region,
5395                                            page_area.x + border.left - view->scroll_x,
5396                                            page_area.y + border.top - view->scroll_y);
5397                         gdk_window_invalidate_region (view->layout.bin_window, region, TRUE);
5398                         gdk_region_destroy (region);
5399                 }
5400         }
5401
5402         /* Free the old list, now that we're done with it. */
5403         g_list_foreach (old_list, (GFunc) selection_free, NULL);
5404 }
5405
5406 static void
5407 compute_selections (EvView          *view,
5408                     EvSelectionStyle style,
5409                     GdkPoint        *start,
5410                     GdkPoint        *stop)
5411 {
5412         GList *list;
5413
5414         if (view->selection_mode == EV_VIEW_SELECTION_RECTANGLE)
5415                 list = compute_new_selection_rect (view, start, stop);
5416         else
5417                 list = compute_new_selection_text (view, style, start, stop);
5418         merge_selection_region (view, list);
5419 }
5420
5421 /* Free's the selection.  It's up to the caller to queue redraws if needed.
5422  */
5423 static void
5424 selection_free (EvViewSelection *selection)
5425 {
5426         if (selection->covered_region)
5427                 gdk_region_destroy (selection->covered_region);
5428         g_free (selection);
5429 }
5430
5431 static void
5432 clear_selection (EvView *view)
5433 {
5434         g_list_foreach (view->selection_info.selections, (GFunc)selection_free, NULL);
5435         view->selection_info.selections = NULL;
5436         view->selection_info.in_selection = FALSE;
5437         if (view->pixbuf_cache)
5438                 ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, NULL);
5439         g_object_notify (G_OBJECT (view), "has-selection");
5440 }
5441
5442 void
5443 ev_view_select_all (EvView *view)
5444 {
5445         GList *selections = NULL;
5446         int n_pages, i;
5447
5448         /* Disable selection on rotated pages for the 0.4.0 series */
5449         if (view->rotation != 0)
5450                 return;
5451
5452         clear_selection (view);
5453
5454         n_pages = ev_page_cache_get_n_pages (view->page_cache);
5455         for (i = 0; i < n_pages; i++) {
5456                 int width, height;
5457                 EvViewSelection *selection;
5458
5459                 ev_page_cache_get_size (view->page_cache,
5460                                         i,
5461                                         view->rotation,
5462                                         1.0, &width, &height);
5463
5464                 selection = g_new0 (EvViewSelection, 1);
5465                 selection->page = i;
5466                 selection->style = EV_SELECTION_STYLE_GLYPH;
5467                 selection->rect.x1 = selection->rect.y1 = 0;
5468                 selection->rect.x2 = width;
5469                 selection->rect.y2 = height;
5470
5471                 selections = g_list_append (selections, selection);
5472         }
5473
5474         merge_selection_region (view, selections);
5475         gtk_widget_queue_draw (GTK_WIDGET (view));
5476 }
5477
5478 gboolean
5479 ev_view_get_has_selection (EvView *view)
5480 {
5481         return view->selection_info.selections != NULL;
5482 }
5483
5484 static char *
5485 get_selected_text (EvView *view)
5486 {
5487         GString *text;
5488         GList *l;
5489         gchar *normalized_text;
5490         EvRenderContext *rc;
5491
5492         text = g_string_new (NULL);
5493         rc = ev_render_context_new (view->rotation, 1, view->scale);
5494
5495         ev_document_doc_mutex_lock ();
5496
5497         for (l = view->selection_info.selections; l != NULL; l = l->next) {
5498                 EvViewSelection *selection = (EvViewSelection *)l->data;
5499                 gchar *tmp;
5500
5501                 ev_render_context_set_page (rc, selection->page);
5502                 tmp = ev_selection_get_selected_text (EV_SELECTION (view->document),
5503                                                       rc, selection->style,
5504                                                       &(selection->rect));
5505
5506                 g_string_append (text, tmp);
5507                 g_free (tmp);
5508         }
5509
5510         ev_document_doc_mutex_unlock ();
5511
5512         g_object_unref (rc);
5513
5514         normalized_text = g_utf8_normalize (text->str, text->len, G_NORMALIZE_NFKC);
5515         g_string_free (text, TRUE);
5516         return normalized_text;
5517 }
5518
5519 void
5520 ev_view_copy (EvView *ev_view)
5521 {
5522         GtkClipboard *clipboard;
5523         char *text;
5524
5525         if (!EV_IS_SELECTION (ev_view->document))
5526                 return;
5527
5528         text = get_selected_text (ev_view);
5529         clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view),
5530                                               GDK_SELECTION_CLIPBOARD);
5531         gtk_clipboard_set_text (clipboard, text, -1);
5532         g_free (text);
5533 }
5534
5535 static void
5536 ev_view_primary_get_cb (GtkClipboard     *clipboard,
5537                         GtkSelectionData *selection_data,
5538                         guint             info,
5539                         gpointer          data)
5540 {
5541         EvView *ev_view = EV_VIEW (data);
5542         char *text;
5543
5544         if (!EV_IS_SELECTION (ev_view->document))
5545                 return;
5546
5547         text = get_selected_text (ev_view);
5548         if (text) {
5549                 gtk_selection_data_set_text (selection_data, text, -1);
5550                 g_free (text);
5551         }
5552 }
5553
5554 static void
5555 ev_view_primary_clear_cb (GtkClipboard *clipboard,
5556                           gpointer      data)
5557 {
5558         EvView *view = EV_VIEW (data);
5559
5560         clear_selection (view);
5561 }
5562
5563 static void
5564 ev_view_update_primary_selection (EvView *ev_view)
5565 {
5566         GtkClipboard *clipboard;
5567
5568         clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view),
5569                                               GDK_SELECTION_PRIMARY);
5570
5571         if (ev_view->selection_info.selections) {
5572                 if (!gtk_clipboard_set_with_owner (clipboard,
5573                                                    clipboard_targets,
5574                                                    G_N_ELEMENTS (clipboard_targets),
5575                                                    ev_view_primary_get_cb,
5576                                                    ev_view_primary_clear_cb,
5577                                                    G_OBJECT (ev_view)))
5578                         ev_view_primary_clear_cb (clipboard, ev_view);
5579         } else {
5580                 if (gtk_clipboard_get_owner (clipboard) == G_OBJECT (ev_view))
5581                         gtk_clipboard_clear (clipboard);
5582         }
5583 }
5584
5585 /*** Cursor operations ***/
5586
5587 static GdkCursor *
5588 ev_view_create_invisible_cursor(void)
5589 {
5590        GdkBitmap *empty;
5591        GdkColor black = { 0, 0, 0, 0 };
5592        static char bits[] = { 0x00 };
5593
5594        empty = gdk_bitmap_create_from_data (NULL, bits, 1, 1);
5595
5596        return gdk_cursor_new_from_pixmap (empty, empty, &black, &black, 0, 0);
5597 }
5598
5599 static void
5600 ev_view_set_cursor (EvView *view, EvViewCursor new_cursor)
5601 {
5602         GdkCursor *cursor = NULL;
5603         GdkDisplay *display;
5604         GtkWidget *widget;
5605
5606         if (view->cursor == new_cursor) {
5607                 return;
5608         }
5609
5610         widget = gtk_widget_get_toplevel (GTK_WIDGET (view));
5611         display = gtk_widget_get_display (widget);
5612         view->cursor = new_cursor;
5613
5614         switch (new_cursor) {
5615                 case EV_VIEW_CURSOR_NORMAL:
5616                         gdk_window_set_cursor (view->layout.bin_window, NULL);
5617                         break;
5618                 case EV_VIEW_CURSOR_IBEAM:
5619                         cursor = gdk_cursor_new_for_display (display, GDK_XTERM);
5620                         break;
5621                 case EV_VIEW_CURSOR_LINK:
5622                         cursor = gdk_cursor_new_for_display (display, GDK_HAND2);
5623                         break;
5624                 case EV_VIEW_CURSOR_WAIT:
5625                         cursor = gdk_cursor_new_for_display (display, GDK_WATCH);
5626                         break;
5627                 case EV_VIEW_CURSOR_HIDDEN:
5628                         cursor = ev_view_create_invisible_cursor ();
5629                         break;
5630                 case EV_VIEW_CURSOR_DRAG:
5631                         cursor = gdk_cursor_new_for_display (display, GDK_FLEUR);
5632                         break;
5633                 case EV_VIEW_CURSOR_AUTOSCROLL:
5634                         cursor = gdk_cursor_new_for_display (display, GDK_DOUBLE_ARROW);
5635                         break;
5636         }
5637
5638         if (cursor) {
5639                 gdk_window_set_cursor (view->layout.bin_window, cursor);
5640                 gdk_cursor_unref (cursor);
5641                 gdk_flush();
5642         }
5643 }
5644
5645 void
5646 ev_view_hide_cursor (EvView *view)
5647 {
5648        ev_view_set_cursor (view, EV_VIEW_CURSOR_HIDDEN);
5649 }
5650
5651 void
5652 ev_view_show_cursor (EvView *view)
5653 {
5654        ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
5655 }
5656
5657 static void
5658 ev_view_reset_presentation_state (EvView *view)
5659 {
5660         if (!view->presentation ||
5661             view->presentation_state == EV_PRESENTATION_NORMAL)
5662                 return;
5663
5664         view->presentation_state = EV_PRESENTATION_NORMAL;
5665         gdk_window_set_background (view->layout.bin_window,
5666                                    &GTK_WIDGET (view)->style->black);
5667         gtk_widget_queue_draw (GTK_WIDGET (view));
5668 }
5669
5670 gboolean
5671 ev_view_next_page (EvView *view)
5672 {
5673         int page, n_pages;
5674
5675         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
5676
5677         if (!view->page_cache)
5678                 return FALSE;
5679
5680         if (view->presentation &&
5681             (view->presentation_state == EV_PRESENTATION_BLACK ||
5682              view->presentation_state == EV_PRESENTATION_WHITE)) {
5683                 ev_view_reset_presentation_state (view);
5684                 return FALSE;
5685         }
5686
5687         ev_view_presentation_transition_stop (view);
5688         ev_view_reset_presentation_state (view);
5689
5690         page = ev_page_cache_get_current_page (view->page_cache);
5691         n_pages = ev_page_cache_get_n_pages (view->page_cache);
5692
5693         if (view->dual_page && !view->presentation)
5694                 page = page + 2;
5695         else
5696                 page = page + 1;
5697
5698         if (page < n_pages) {
5699                 ev_page_cache_set_current_page (view->page_cache, page);
5700                 return TRUE;
5701         } else if (view->presentation && page == n_pages) {
5702                 view->presentation_state = EV_PRESENTATION_END;
5703                 gtk_widget_queue_draw (GTK_WIDGET (view));
5704                 return TRUE;
5705         } else if (view->dual_page && page == n_pages) {
5706                 ev_page_cache_set_current_page (view->page_cache, page - 1);
5707                 return TRUE;
5708         } else {
5709                 return FALSE;
5710         }
5711 }
5712
5713 gboolean
5714 ev_view_previous_page (EvView *view)
5715 {
5716         int page;
5717
5718         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
5719
5720         if (!view->page_cache)
5721                 return FALSE;
5722
5723         if (view->presentation &&
5724             view->presentation_state == EV_PRESENTATION_END) {
5725                 ev_view_reset_presentation_state (view);
5726                 return TRUE;
5727         }
5728
5729         if (view->presentation &&
5730             (view->presentation_state == EV_PRESENTATION_BLACK ||
5731              view->presentation_state == EV_PRESENTATION_WHITE)) {
5732                 ev_view_reset_presentation_state (view);
5733                 return FALSE;
5734         }
5735
5736         ev_view_reset_presentation_state (view);
5737
5738         page = ev_page_cache_get_current_page (view->page_cache);
5739
5740         if (view->dual_page && !view->presentation)
5741                 page = page - 2;
5742         else
5743                 page = page - 1;
5744
5745         if (page >= 0) {
5746                 ev_page_cache_set_current_page (view->page_cache, page);
5747                 return TRUE;
5748         } else if (ev_view_get_dual_page (view) && page == -1) {
5749                 ev_page_cache_set_current_page (view->page_cache, 0);
5750                 return TRUE;
5751         } else {
5752                 return FALSE;
5753         }
5754 }
5755
5756 /*** Enum description for usage in signal ***/
5757
5758 GType
5759 ev_sizing_mode_get_type (void)
5760 {
5761   static GType etype = 0;
5762   if (etype == 0) {
5763     static const GEnumValue values[] = {
5764       { EV_SIZING_FIT_WIDTH, "EV_SIZING_FIT_WIDTH", "fit-width" },
5765       { EV_SIZING_BEST_FIT, "EV_SIZING_BEST_FIT", "best-fit" },
5766       { EV_SIZING_FREE, "EV_SIZING_FREE", "free" },
5767       { 0, NULL, NULL }
5768     };
5769     etype = g_enum_register_static ("EvSizingMode", values);
5770   }
5771   return etype;
5772 }
5773
5774 GType
5775 ev_scroll_type_get_type (void)
5776 {
5777   static GType etype = 0;
5778   if (etype == 0) {
5779     static const GEnumValue values[] = {
5780       { EV_SCROLL_PAGE_FORWARD, "EV_SCROLL_PAGE_FORWARD", "scroll-page-forward" },
5781       { EV_SCROLL_PAGE_BACKWARD, "EV_SCROLL_PAGE_BACKWARD", "scroll-page-backward" },
5782       { EV_SCROLL_STEP_FORWARD, "EV_SCROLL_STEP_FORWARD", "scroll-step-forward" },
5783       { EV_SCROLL_STEP_FORWARD, "EV_SCROLL_STEP_FORWARD", "scroll-step-forward" },
5784       { EV_SCROLL_STEP_UP, "EV_SCROLL_STEP_UP", "scroll-step-up" },
5785       { EV_SCROLL_STEP_DOWN, "EV_SCROLL_STEP_DOWN", "scroll-step-down" },
5786       { 0, NULL, NULL }
5787     };
5788     etype = g_enum_register_static ("EvScrollType", values);
5789   }
5790   return etype;
5791 }
5792
5793 void
5794 ev_view_update_view_size (EvView *view, GtkScrolledWindow * scrolled_window)
5795 {
5796         int width, height;
5797         GtkRequisition vsb_requisition;
5798         GtkRequisition hsb_requisition;
5799         int scrollbar_spacing;
5800
5801         /* Calculate the width available for the content */
5802         width  = GTK_WIDGET (scrolled_window)->allocation.width;
5803         height = GTK_WIDGET (scrolled_window)->allocation.height;
5804
5805         if (gtk_scrolled_window_get_shadow_type (scrolled_window) == GTK_SHADOW_IN
5806             && view) {
5807                 width -=  2 * GTK_WIDGET(view)->style->xthickness;
5808                 height -= 2 * GTK_WIDGET(view)->style->ythickness;
5809         }
5810
5811         gtk_widget_size_request (scrolled_window->vscrollbar, &vsb_requisition);
5812         gtk_widget_size_request (scrolled_window->hscrollbar, &hsb_requisition);
5813         gtk_widget_style_get (GTK_WIDGET (scrolled_window),
5814                               "scrollbar_spacing",
5815                               &scrollbar_spacing,
5816                               NULL);
5817
5818         if (EV_IS_VIEW(view)) {
5819                 ev_view_set_zoom_for_size (EV_VIEW (view),
5820                                            MAX (1, width),
5821                                            MAX (1, height),
5822                                            vsb_requisition.width + scrollbar_spacing,
5823                                            hsb_requisition.height + scrollbar_spacing);
5824         }
5825 }