shell/ev-view.c

   1 /* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8; c-indent-level: 8 -*- */
   2 /* this file is part of evince, a gnome document viewer
   3  *
   4  *  Copyright (C) 2004 Red Hat, Inc
   5  *
   6  * Evince is free software; you can redistribute it and/or modify it
   7  * under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * Evince is distributed in the hope that it will be useful, but
  12  * WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
  19  */
  20
  21 #include <stdlib.h>
  22 #include <math.h>
  23 #include <string.h>
  24 #include <gtk/gtkalignment.h>
  25 #include <glib/gi18n.h>
  26 #include <gtk/gtkbindings.h>
  27 #include <gtk/gtkselection.h>
  28 #include <gtk/gtkclipboard.h>
  29 #include <gdk/gdkkeysyms.h>
  30
  31 #include "ev-marshal.h"
  32 #include "ev-view.h"
  33 #include "ev-view-private.h"
  34 #include "ev-utils.h"
  35 #include "ev-selection.h"
  36 #include "ev-document-links.h"
  37 #include "ev-document-images.h"
  38 #include "ev-document-find.h"
  39 #include "ev-document-transition.h"
  40 #include "ev-document-forms.h"
  41 #include "ev-document-misc.h"
  42 #include "ev-job-queue.h"
  43 #include "ev-page-cache.h"
  44 #include "ev-pixbuf-cache.h"
  45 #if !GTK_CHECK_VERSION (2, 11, 7)
  46 #include "ev-tooltip.h"
  47 #endif
  48 #include "ev-application.h"
  49
  50 #define EV_VIEW_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass), EV_TYPE_VIEW, EvViewClass))
  51 #define EV_IS_VIEW_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), EV_TYPE_VIEW))
  52 #define EV_VIEW_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj), EV_TYPE_VIEW, EvViewClass))
  53
  54
  55 enum {
  56         PROP_0,
  57         PROP_FIND_STATUS,
  58         PROP_CONTINUOUS,
  59         PROP_DUAL_PAGE,
  60         PROP_FULLSCREEN,
  61         PROP_PRESENTATION,
  62         PROP_SIZING_MODE,
  63         PROP_ZOOM,
  64         PROP_ROTATION,
  65         PROP_HAS_SELECTION,
  66 };
  67
  68 enum {
  69         SIGNAL_BINDING_ACTIVATED,
  70         SIGNAL_ZOOM_INVALID,
  71         SIGNAL_HANDLE_LINK,
  72         SIGNAL_EXTERNAL_LINK,
  73         SIGNAL_POPUP_MENU,
  74         N_SIGNALS,
  75 };
  76
  77 enum {
  78         TARGET_DND_URI,
  79         TARGET_DND_TEXT,
  80         TARGET_DND_IMAGE
  81 };
  82
  83 enum {
  84         TARGET_STRING,
  85         TARGET_TEXT,
  86         TARGET_COMPOUND_TEXT,
  87         TARGET_UTF8_STRING,
  88         TARGET_TEXT_BUFFER_CONTENTS
  89 };
  90
  91 static const GtkTargetEntry clipboard_targets[] = {
  92         { "STRING", 0, TARGET_STRING },
  93         { "TEXT",   0, TARGET_TEXT },
  94         { "COMPOUND_TEXT", 0, TARGET_COMPOUND_TEXT },
  95         { "UTF8_STRING", 0, TARGET_UTF8_STRING },
  96 };
  97
  98 static const GtkTargetEntry view_drop_targets[] = {
  99         { "text/uri-list", 0, 0 }
 100 };
 101
 102 static guint signals[N_SIGNALS];
 103
 104 typedef enum {
 105         EV_VIEW_FIND_NEXT,
 106         EV_VIEW_FIND_PREV
 107 } EvViewFindDirection;
 108
 109 #define ZOOM_IN_FACTOR  1.2
 110 #define ZOOM_OUT_FACTOR (1.0/ZOOM_IN_FACTOR)
 111
 112 #define MIN_SCALE 0.05409
 113 #define MAX_SCALE 4.0
 114
 115 #define SCROLL_TIME 150
 116
 117 /*** Scrolling ***/
 118 static void       scroll_to_current_page                     (EvView *view,
 119                                                               GtkOrientation orientation);
 120 static void       ev_view_set_scroll_adjustments             (GtkLayout          *layout,
 121                                                               GtkAdjustment      *hadjustment,
 122                                                               GtkAdjustment      *vadjustment);
 123 static void       view_update_range_and_current_page         (EvView             *view);
 124 static void       set_scroll_adjustment                      (EvView             *view,
 125                                                               GtkOrientation      orientation,
 126                                                               GtkAdjustment      *adjustment);
 127 static void       add_scroll_binding_keypad                  (GtkBindingSet      *binding_set,
 128                                                               guint               keyval,
 129                                                               GdkModifierType modifiers,
 130                                                               EvScrollType       scroll,
 131                                                               gboolean            horizontal);
 132 static void       ensure_rectangle_is_visible                (EvView             *view,
 133                                                               GdkRectangle       *rect);
 134
 135 /*** Geometry computations ***/
 136 static void       compute_border                             (EvView             *view,
 137                                                               int                 width,
 138                                                               int                 height,
 139                                                               GtkBorder          *border);
 140 static void       get_page_y_offset                          (EvView *view,
 141                                                               int page,
 142                                                               double zoom,
 143                                                               int *y_offset);
 144 static gboolean   get_page_extents                           (EvView             *view,
 145                                                               gint                page,
 146                                                               GdkRectangle       *page_area,
 147                                                               GtkBorder          *border);
 148 static void       view_rect_to_doc_rect                      (EvView             *view,
 149                                                               GdkRectangle       *view_rect,
 150                                                               GdkRectangle       *page_area,
 151                                                               EvRectangle        *doc_rect);
 152 static void       doc_rect_to_view_rect                      (EvView             *view,
 153                                                               int                 page,
 154                                                               EvRectangle        *doc_rect,
 155                                                               GdkRectangle       *view_rect);
 156 static void       find_page_at_location                      (EvView             *view,
 157                                                               gdouble             x,
 158                                                               gdouble             y,
 159                                                               gint               *page,
 160                                                               gint               *x_offset,
 161                                                               gint               *y_offset);
 162 static gboolean  doc_point_to_view_point                     (EvView             *view,
 163                                                               int                 page,
 164                                                               EvPoint            *doc_point,
 165                                                               GdkPoint           *view_point);
 166 /*** Hyperrefs ***/
 167 static EvLink *   ev_view_get_link_at_location               (EvView             *view,
 168                                                               gdouble             x,
 169                                                               gdouble             y);
 170 static char*      tip_from_link                              (EvView             *view,
 171                                                               EvLink             *link);
 172 /*** Forms ***/
 173 static EvFormField *ev_view_get_form_field_at_location       (EvView             *view,
 174                                                                gdouble            x,
 175                                                                gdouble            y);
 176
 177 /*** GtkWidget implementation ***/
 178 static void       ev_view_size_request_continuous_dual_page  (EvView             *view,
 179                                                               GtkRequisition     *requisition);
 180 static void       ev_view_size_request_continuous            (EvView             *view,
 181                                                               GtkRequisition     *requisition);
 182 static void       ev_view_size_request_dual_page             (EvView             *view,
 183                                                               GtkRequisition     *requisition);
 184 static void       ev_view_size_request_single_page           (EvView             *view,
 185                                                               GtkRequisition     *requisition);
 186 static void       ev_view_size_request                       (GtkWidget          *widget,
 187                                                               GtkRequisition     *requisition);
 188 static void       ev_view_size_allocate                      (GtkWidget          *widget,
 189                                                               GtkAllocation      *allocation);
 190 static void       ev_view_realize                            (GtkWidget          *widget);
 191 static gboolean   ev_view_scroll_event                       (GtkWidget          *widget,
 192                                                               GdkEventScroll     *event);
 193 static gboolean   ev_view_expose_event                       (GtkWidget          *widget,
 194                                                               GdkEventExpose     *event);
 195 static gboolean   ev_view_popup_menu                         (GtkWidget          *widget);
 196 static gboolean   ev_view_button_press_event                 (GtkWidget          *widget,
 197                                                               GdkEventButton     *event);
 198 static gboolean   ev_view_motion_notify_event                (GtkWidget          *widget,
 199                                                               GdkEventMotion     *event);
 200 static gboolean   ev_view_button_release_event               (GtkWidget          *widget,
 201                                                               GdkEventButton     *event);
 202 static gboolean   ev_view_enter_notify_event                 (GtkWidget          *widget,
 203                                                               GdkEventCrossing   *event);
 204 static gboolean   ev_view_leave_notify_event                 (GtkWidget          *widget,
 205                                                               GdkEventCrossing   *event);
 206 static void       ev_view_style_set                          (GtkWidget          *widget,
 207                                                               GtkStyle           *old_style);
 208 static void       ev_view_remove_all                         (EvView             *view);
 209
 210 static AtkObject *ev_view_get_accessible                     (GtkWidget *widget);
 211
 212 /*** Drawing ***/
 213 static guint32    ev_gdk_color_to_rgb                        (const GdkColor     *color);
 214 static void       draw_rubberband                            (GtkWidget          *widget,
 215                                                               GdkWindow          *window,
 216                                                               const GdkRectangle *rect,
 217                                                               guchar              alpha);
 218 static void       highlight_find_results                     (EvView             *view,
 219                                                               int                 page);
 220 static void       draw_one_page                              (EvView             *view,
 221                                                               gint                page,
 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                                                               GdkPoint           *start,
 318                                                               GdkPoint           *stop);
 319 static void       clear_selection                            (EvView             *view);
 320 static void       selection_free                             (EvViewSelection    *selection);
 321 static char*      get_selected_text                          (EvView             *ev_view);
 322 static void       ev_view_primary_get_cb                     (GtkClipboard       *clipboard,
 323                                                               GtkSelectionData   *selection_data,
 324                                                               guint               info,
 325                                                               gpointer            data);
 326 static void       ev_view_primary_clear_cb                   (GtkClipboard       *clipboard,
 327                                                               gpointer            data);
 328 static void       ev_view_update_primary_selection           (EvView             *ev_view);
 329
 330 /*** Presentation ***/
 331 static void       ev_view_presentation_transition_start      (EvView             *ev_view);
 332 static void       ev_view_presentation_transition_stop       (EvView             *ev_view);
 333
 334
 335 G_DEFINE_TYPE (EvView, ev_view, GTK_TYPE_LAYOUT)
 336
 337 static void
 338 scroll_to_current_page (EvView *view, GtkOrientation orientation)
 339 {
 340         GdkPoint view_point;
 341
 342         if (view->document == NULL) {
 343                 return;
 344         }
 345
 346         doc_point_to_view_point (view, view->current_page, &view->pending_point, &view_point);
 347
 348         if (orientation == GTK_ORIENTATION_VERTICAL) {
 349                 view->pending_point.y = 0;
 350         } else {
 351                 view->pending_point.x = 0;
 352         }
 353
 354         if (orientation == GTK_ORIENTATION_VERTICAL) {
 355                 if (view->continuous) {
 356                         gtk_adjustment_clamp_page (view->vadjustment,
 357                                                    view_point.y - view->spacing / 2,
 358                                                    view_point.y + view->vadjustment->page_size);
 359                 } else {
 360                         gtk_adjustment_set_value (view->vadjustment,
 361                                                   CLAMP (view_point.y,
 362                                                   view->vadjustment->lower,
 363                                                   view->vadjustment->upper -
 364                                                   view->vadjustment->page_size));
 365                 }
 366         } else {
 367                 if (view->dual_page) {
 368                         gtk_adjustment_clamp_page (view->hadjustment,
 369                                                    view_point.x,
 370                                                    view_point.x + view->hadjustment->page_size);
 371                 } else {
 372                         gtk_adjustment_set_value (view->hadjustment,
 373                                                   CLAMP (view_point.x,
 374                                                   view->hadjustment->lower,
 375                                                   view->hadjustment->upper -
 376                                                   view->hadjustment->page_size));
 377                 }
 378         }
 379 }
 380
 381 static void
 382 view_set_adjustment_values (EvView         *view,
 383                             GtkOrientation  orientation)
 384 {
 385         GtkWidget *widget = GTK_WIDGET (view);
 386         GtkAdjustment *adjustment;
 387         int requisition;
 388         int allocation;
 389
 390         double factor;
 391         gint new_value;
 392
 393         if (orientation == GTK_ORIENTATION_HORIZONTAL)  {
 394                 requisition = widget->requisition.width;
 395                 allocation = widget->allocation.width;
 396                 adjustment = view->hadjustment;
 397         } else {
 398                 requisition = widget->requisition.height;
 399                 allocation = widget->allocation.height;
 400                 adjustment = view->vadjustment;
 401         }
 402
 403         if (!adjustment)
 404                 return;
 405
 406         factor = 1.0;
 407         switch (view->pending_scroll) {
 408                 case SCROLL_TO_KEEP_POSITION:
 409                 case SCROLL_TO_FIND_LOCATION:
 410                         factor = (adjustment->value) / adjustment->upper;
 411                         break;
 412                 case SCROLL_TO_PAGE_POSITION:
 413                         break;
 414                 case SCROLL_TO_CENTER:
 415                         factor = (adjustment->value + adjustment->page_size * 0.5) / adjustment->upper;
 416                         break;
 417         }
 418
 419         adjustment->page_size = allocation;
 420         adjustment->step_increment = allocation * 0.1;
 421         adjustment->page_increment = allocation * 0.9;
 422         adjustment->lower = 0;
 423         adjustment->upper = MAX (allocation, requisition);
 424
 425         /*
 426          * We add 0.5 to the values before to average out our rounding errors.
 427          */
 428         switch (view->pending_scroll) {
 429                 case SCROLL_TO_KEEP_POSITION:
 430                 case SCROLL_TO_FIND_LOCATION:
 431                         new_value = CLAMP (adjustment->upper * factor + 0.5, 0, adjustment->upper - adjustment->page_size);
 432                         gtk_adjustment_set_value (adjustment, (int)new_value);
 433                         break;
 434                 case SCROLL_TO_PAGE_POSITION:
 435                         scroll_to_current_page (view, orientation);
 436                         break;
 437                 case SCROLL_TO_CENTER:
 438                         new_value = CLAMP (adjustment->upper * factor - adjustment->page_size * 0.5 + 0.5,
 439                                            0, adjustment->upper - adjustment->page_size);
 440                         gtk_adjustment_set_value (adjustment, (int)new_value);
 441                         break;
 442         }
 443
 444         gtk_adjustment_changed (adjustment);
 445 }
 446
 447 static void
 448 view_update_range_and_current_page (EvView *view)
 449 {
 450         gint current_page;
 451         gint best_current_page = -1;
 452
 453         /* Presentation trumps all other modes */
 454         if (view->presentation) {
 455                 view->start_page = view->current_page;
 456                 view->end_page = view->current_page;
 457         } else if (view->continuous) {
 458                 GdkRectangle current_area, unused, page_area;
 459                 GtkBorder border;
 460                 gboolean found = FALSE;
 461                 gint area_max = -1, area;
 462                 int i;
 463
 464                 if (!(view->vadjustment && view->hadjustment))
 465                         return;
 466
 467                 current_area.x = view->hadjustment->value;
 468                 current_area.width = view->hadjustment->upper;
 469                 current_area.y = view->vadjustment->value;
 470                 current_area.height = view->vadjustment->page_size;
 471
 472                 for (i = 0; i < ev_page_cache_get_n_pages (view->page_cache); i++) {
 473
 474                         get_page_extents (view, i, &page_area, &border);
 475
 476                         if (gdk_rectangle_intersect (&current_area, &page_area, &unused)) {
 477                                 area = unused.width * unused.height;
 478
 479                                 if (!found) {
 480                                         area_max = area;
 481                                         view->start_page = i;
 482                                         found = TRUE;
 483                                         best_current_page = i;
 484                                 }
 485                                 if (area > area_max) {
 486                                         best_current_page = (area == area_max) ? MIN (i, best_current_page) : i;
 487                                         area_max = area;
 488                                 }
 489
 490                                 view->end_page = i;
 491                         } else if (found) {
 492                                 break;
 493                         }
 494                 }
 495
 496         } else if (view->dual_page) {
 497                 if (view->current_page % 2 == ev_page_cache_get_dual_even_left (view->page_cache)) {
 498                         view->start_page = view->current_page;
 499                         if (view->current_page + 1 < ev_page_cache_get_n_pages (view->page_cache))
 500                                 view->end_page = view->start_page + 1;
 501                         else
 502                                 view->end_page = view->start_page;
 503                 } else {
 504                         if (view->current_page < 1)
 505                                 view->start_page = view->current_page;
 506                         else
 507                                 view->start_page = view->current_page - 1;
 508                         view->end_page = view->current_page;
 509                 }
 510         } else {
 511                 view->start_page = view->current_page;
 512                 view->end_page = view->current_page;
 513         }
 514
 515         best_current_page = MAX (best_current_page, view->start_page);
 516         current_page = ev_page_cache_get_current_page (view->page_cache);
 517
 518         if ((current_page != best_current_page) && (view->pending_scroll == SCROLL_TO_KEEP_POSITION)) {
 519                 view->current_page = best_current_page;
 520                 ev_page_cache_set_current_page (view->page_cache, best_current_page);
 521         }
 522
 523         ev_pixbuf_cache_set_page_range (view->pixbuf_cache,
 524                                         view->start_page,
 525                                         view->end_page,
 526                                         view->rotation,
 527                                         view->scale,
 528                                         view->selection_info.selections);
 529 }
 530
 531 static void
 532 set_scroll_adjustment (EvView *view,
 533                        GtkOrientation  orientation,
 534                        GtkAdjustment  *adjustment)
 535 {
 536         GtkAdjustment **to_set;
 537
 538         if (orientation == GTK_ORIENTATION_HORIZONTAL)
 539                 to_set = &view->hadjustment;
 540         else
 541                 to_set = &view->vadjustment;
 542
 543         if (*to_set != adjustment) {
 544                 if (*to_set) {
 545                         g_signal_handlers_disconnect_by_func (*to_set,
 546                                                               (gpointer) on_adjustment_value_changed,
 547                                                               view);
 548                         g_object_unref (*to_set);
 549                 }
 550
 551                 *to_set = adjustment;
 552                 view_set_adjustment_values (view, orientation);
 553
 554                 if (*to_set) {
 555                         g_object_ref (*to_set);
 556                         g_signal_connect (*to_set, "value_changed",
 557                                           G_CALLBACK (on_adjustment_value_changed), view);
 558                 }
 559         }
 560 }
 561
 562 static void
 563 ev_view_set_scroll_adjustments (GtkLayout      *layout,
 564                                 GtkAdjustment  *hadjustment,
 565                                 GtkAdjustment  *vadjustment)
 566 {
 567         EvView *view = EV_VIEW (layout);
 568
 569         set_scroll_adjustment (view, GTK_ORIENTATION_HORIZONTAL, hadjustment);
 570         set_scroll_adjustment (view, GTK_ORIENTATION_VERTICAL, vadjustment);
 571
 572         on_adjustment_value_changed (NULL, view);
 573 }
 574
 575 static void
 576 add_scroll_binding_keypad (GtkBindingSet  *binding_set,
 577                            guint           keyval,
 578                            GdkModifierType modifiers,
 579                            EvScrollType    scroll,
 580                            gboolean        horizontal)
 581 {
 582   guint keypad_keyval = keyval - GDK_Left + GDK_KP_Left;
 583
 584   gtk_binding_entry_add_signal (binding_set, keyval, modifiers,
 585                                 "binding_activated", 2,
 586                                 EV_TYPE_SCROLL_TYPE, scroll,
 587                                 G_TYPE_BOOLEAN, horizontal);
 588   gtk_binding_entry_add_signal (binding_set, keypad_keyval, modifiers,
 589                                 "binding_activated", 2,
 590                                 EV_TYPE_SCROLL_TYPE, scroll,
 591                                 G_TYPE_BOOLEAN, horizontal);
 592 }
 593
 594 void
 595 ev_view_scroll (EvView        *view,
 596                 EvScrollType   scroll,
 597                 gboolean horizontal)
 598 {
 599         GtkAdjustment *adjustment;
 600         double value, increment;
 601         gboolean first_page = FALSE;
 602         gboolean last_page = FALSE;
 603
 604         view->jump_to_find_result = FALSE;
 605
 606         if (view->presentation || view->sizing_mode == EV_SIZING_BEST_FIT) {
 607                 switch (scroll) {
 608                         case EV_SCROLL_PAGE_BACKWARD:
 609                         case EV_SCROLL_STEP_BACKWARD:
 610                                 ev_view_previous_page (view);
 611                                 break;
 612                         case EV_SCROLL_PAGE_FORWARD:
 613                         case EV_SCROLL_STEP_FORWARD:
 614                                 ev_view_next_page (view);
 615                                 break;
 616                         default:
 617                                 break;
 618                 }
 619                 return;
 620         }
 621
 622         /* Assign values for increment and vertical adjustment */
 623         adjustment = horizontal ? view->hadjustment : view->vadjustment;
 624         increment = adjustment->page_size * 0.75;
 625         value = adjustment->value;
 626
 627         /* Assign boolean for first and last page */
 628         if (view->current_page == 0)
 629                 first_page = TRUE;
 630         if (view->current_page == ev_page_cache_get_n_pages (view->page_cache) - 1)
 631                 last_page = TRUE;
 632
 633         switch (scroll) {
 634                 case EV_SCROLL_PAGE_BACKWARD:
 635                         /* Do not jump backwards if at the first page */
 636                         if (value == (adjustment->lower) && first_page) {
 637                                 /* Do nothing */
 638                                 /* At the top of a page, assign the upper bound limit of previous page */
 639                         } else if (value == (adjustment->lower)) {
 640                                 value = adjustment->upper - adjustment->page_size;
 641                                 ev_view_previous_page (view);
 642                                 /* Jump to the top */
 643                         } else {
 644                                 value = MAX (value - increment, adjustment->lower);
 645                         }
 646                         break;
 647                 case EV_SCROLL_PAGE_FORWARD:
 648                         /* Do not jump forward if at the last page */
 649                         if (value == (adjustment->upper - adjustment->page_size) && last_page) {
 650                                 /* Do nothing */
 651                         /* At the bottom of a page, assign the lower bound limit of next page */
 652                         } else if (value == (adjustment->upper - adjustment->page_size)) {
 653                                 value = 0;
 654                                 ev_view_next_page (view);
 655                         /* Jump to the bottom */
 656                         } else {
 657                                 value = MIN (value + increment, adjustment->upper - adjustment->page_size);
 658                         }
 659                         break;
 660                 case EV_SCROLL_STEP_BACKWARD:
 661                         value -= adjustment->step_increment;
 662                         break;
 663                 case EV_SCROLL_STEP_FORWARD:
 664                         value += adjustment->step_increment;
 665                         break;
 666                 case EV_SCROLL_STEP_DOWN:
 667                         value -= adjustment->step_increment / 10;
 668                         break;
 669                 case EV_SCROLL_STEP_UP:
 670                         value += adjustment->step_increment / 10;
 671                         break;
 672                 default:
 673                         break;
 674         }
 675
 676         value = CLAMP (value, adjustment->lower,
 677                        adjustment->upper - adjustment->page_size);
 678
 679         gtk_adjustment_set_value (adjustment, value);
 680 }
 681
 682 #define MARGIN 5
 683
 684 static void
 685 ensure_rectangle_is_visible (EvView *view, GdkRectangle *rect)
 686 {
 687         GtkWidget *widget = GTK_WIDGET (view);
 688         GtkAdjustment *adjustment;
 689         int value;
 690
 691         view->pending_scroll = SCROLL_TO_FIND_LOCATION;
 692
 693         adjustment = view->vadjustment;
 694
 695         if (rect->y < adjustment->value) {
 696                 value = MAX (adjustment->lower, rect->y - MARGIN);
 697                 gtk_adjustment_set_value (view->vadjustment, value);
 698         } else if (rect->y + rect->height >
 699                    adjustment->value + widget->allocation.height) {
 700                 value = MIN (adjustment->upper, rect->y + rect->height -
 701                              widget->allocation.height + MARGIN);
 702                 gtk_adjustment_set_value (view->vadjustment, value);
 703         }
 704
 705         adjustment = view->hadjustment;
 706
 707         if (rect->x < adjustment->value) {
 708                 value = MAX (adjustment->lower, rect->x - MARGIN);
 709                 gtk_adjustment_set_value (view->hadjustment, value);
 710         } else if (rect->x + rect->height >
 711                    adjustment->value + widget->allocation.width) {
 712                 value = MIN (adjustment->upper, rect->x + rect->width -
 713                              widget->allocation.width + MARGIN);
 714                 gtk_adjustment_set_value (view->hadjustment, value);
 715         }
 716
 717         gtk_widget_queue_resize (GTK_WIDGET (view));
 718 }
 719
 720 /*** Geometry computations ***/
 721
 722 static void
 723 compute_border (EvView *view, int width, int height, GtkBorder *border)
 724 {
 725         if (view->presentation) {
 726                 border->left = 0;
 727                 border->right = 0;
 728                 border->top = 0;
 729                 border->bottom = 0;
 730         } else {
 731                 ev_document_misc_get_page_border_size (width, height, border);
 732         }
 733 }
 734
 735 static void
 736 get_page_y_offset (EvView *view, int page, double zoom, int *y_offset)
 737 {
 738         int max_width, offset;
 739         GtkBorder border;
 740
 741         g_return_if_fail (y_offset != NULL);
 742
 743         ev_page_cache_get_max_width (view->page_cache, view->rotation, zoom, &max_width);
 744
 745         compute_border (view, max_width, max_width, &border);
 746
 747         if (view->dual_page) {
 748                 ev_page_cache_get_height_to_page (view->page_cache, page,
 749                                                   view->rotation, zoom, NULL, &offset);
 750                 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);
 751         } else {
 752                 ev_page_cache_get_height_to_page (view->page_cache, page,
 753                                                   view->rotation, zoom, &offset, NULL);
 754                 offset += (page + 1) * view->spacing + page * (border.top + border.bottom);
 755         }
 756
 757         *y_offset = offset;
 758         return;
 759 }
 760
 761 static gboolean
 762 get_page_extents (EvView       *view,
 763                   gint          page,
 764                   GdkRectangle *page_area,
 765                   GtkBorder    *border)
 766 {
 767         GtkWidget *widget;
 768         int width, height;
 769
 770         widget = GTK_WIDGET (view);
 771
 772         /* Get the size of the page */
 773         ev_page_cache_get_size (view->page_cache, page,
 774                                 view->rotation,
 775                                 view->scale,
 776                                 &width, &height);
 777         compute_border (view, width, height, border);
 778         page_area->width = width + border->left + border->right;
 779         page_area->height = height + border->top + border->bottom;
 780
 781         if (view->presentation) {
 782                 page_area->x = (MAX (0, widget->allocation.width - width))/2;
 783                 page_area->y = (MAX (0, widget->allocation.height - height))/2;
 784         } else if (view->continuous) {
 785                 gint max_width;
 786                 gint x, y;
 787
 788                 ev_page_cache_get_max_width (view->page_cache, view->rotation,
 789                                              view->scale, &max_width);
 790                 max_width = max_width + border->left + border->right;
 791                 /* Get the location of the bounding box */
 792                 if (view->dual_page) {
 793                         x = view->spacing + ((page % 2 == ev_page_cache_get_dual_even_left (view->page_cache)) ? 0 : 1) * (max_width + view->spacing);
 794                         x = x + MAX (0, widget->allocation.width - (max_width * 2 + view->spacing * 3)) / 2;
 795                         if (page % 2 == ev_page_cache_get_dual_even_left (view->page_cache))
 796                                 x = x + (max_width - width - border->left - border->right);
 797                 } else {
 798                         x = view->spacing;
 799                         x = x + MAX (0, widget->allocation.width - (width + view->spacing * 2)) / 2;
 800                 }
 801
 802                 get_page_y_offset (view, page, view->scale, &y);
 803
 804                 page_area->x = x;
 805                 page_area->y = y;
 806         } else {
 807                 gint x, y;
 808                 if (view->dual_page) {
 809                         gint width_2, height_2;
 810                         gint max_width = width;
 811                         gint max_height = height;
 812                         GtkBorder overall_border;
 813                         gint other_page;
 814
 815                         other_page = (page % 2 == ev_page_cache_get_dual_even_left (view->page_cache)) ? page + 1: page - 1;
 816
 817                         /* First, we get the bounding box of the two pages */
 818                         if (other_page < ev_page_cache_get_n_pages (view->page_cache)
 819                             && (0 <= other_page)) {
 820                                 ev_page_cache_get_size (view->page_cache,
 821                                                         other_page,
 822                                                         view->rotation,
 823                                                         view->scale,
 824                                                         &width_2, &height_2);
 825                                 if (width_2 > width)
 826                                         max_width = width_2;
 827                                 if (height_2 > height)
 828                                         max_height = height_2;
 829                         }
 830                         compute_border (view, max_width, max_height, &overall_border);
 831
 832                         /* Find the offsets */
 833                         x = view->spacing;
 834                         y = view->spacing;
 835
 836                         /* Adjust for being the left or right page */
 837                         if (page % 2 == ev_page_cache_get_dual_even_left (view->page_cache))
 838                                 x = x + max_width - width;
 839                         else
 840                                 x = x + (max_width + overall_border.left + overall_border.right) + view->spacing;
 841
 842                         y = y + (max_height - height)/2;
 843
 844                         /* Adjust for extra allocation */
 845                         x = x + MAX (0, widget->allocation.width -
 846                                      ((max_width + overall_border.left + overall_border.right) * 2 + view->spacing * 3))/2;
 847                         y = y + MAX (0, widget->allocation.height - (height + view->spacing * 2))/2;
 848                 } else {
 849                         x = view->spacing;
 850                         y = view->spacing;
 851
 852                         /* Adjust for extra allocation */
 853                         x = x + MAX (0, widget->allocation.width - (width + border->left + border->right + view->spacing * 2))/2;
 854                         y = y + MAX (0, widget->allocation.height - (height + border->top + border->bottom +  view->spacing * 2))/2;
 855                 }
 856
 857                 page_area->x = x;
 858                 page_area->y = y;
 859         }
 860
 861         return TRUE;
 862 }
 863
 864 static void
 865 view_point_to_doc_point (EvView *view,
 866                          GdkPoint *view_point,
 867                          GdkRectangle *page_area,
 868                          double  *doc_point_x,
 869                          double  *doc_point_y)
 870 {
 871         *doc_point_x = (double) (view_point->x - page_area->x) / view->scale;
 872         *doc_point_y = (double) (view_point->y - page_area->y) / view->scale;
 873 }
 874
 875 static void
 876 view_rect_to_doc_rect (EvView *view,
 877                        GdkRectangle *view_rect,
 878                        GdkRectangle *page_area,
 879                        EvRectangle  *doc_rect)
 880 {
 881         doc_rect->x1 = (double) (view_rect->x - page_area->x) / view->scale;
 882         doc_rect->y1 = (double) (view_rect->y - page_area->y) / view->scale;
 883         doc_rect->x2 = doc_rect->x1 + (double) view_rect->width / view->scale;
 884         doc_rect->y2 = doc_rect->y1 + (double) view_rect->height / view->scale;
 885 }
 886
 887 static gboolean
 888 doc_point_to_view_point (EvView       *view,
 889                          int           page,
 890                          EvPoint      *doc_point,
 891                          GdkPoint     *view_point)
 892 {
 893         GdkRectangle page_area;
 894         GtkBorder border;
 895         double x, y, view_x, view_y;
 896         int width, height;
 897
 898         ev_page_cache_get_size (view->page_cache, page,
 899                                 view->rotation,
 900                                 1.0,
 901                                 &width, &height);
 902
 903         if (view->rotation == 0) {
 904                 x = doc_point->x;
 905                 y = doc_point->y;
 906         } else if (view->rotation == 90) {
 907                 x = width - doc_point->y;
 908                 y = doc_point->x;
 909         } else if (view->rotation == 180) {
 910                 x = width - doc_point->x;
 911                 y = height - doc_point->y;
 912         } else if (view->rotation == 270) {
 913                 x = doc_point->y;
 914                 y = height - doc_point->x;
 915         } else {
 916                 g_assert_not_reached ();
 917         }
 918
 919         get_page_extents (view, page, &page_area, &border);
 920
 921         view_x = x * view->scale;
 922         view_y = y * view->scale;
 923         view_point->x = view_x + page_area.x;
 924         view_point->y = view_y + page_area.y;
 925
 926         return (view_x > 0 && view_x <= page_area.width &&
 927                 view_y > 0 && view_y <= page_area.height);
 928 }
 929
 930 static void
 931 doc_rect_to_view_rect (EvView       *view,
 932                        int           page,
 933                        EvRectangle  *doc_rect,
 934                        GdkRectangle *view_rect)
 935 {
 936         GdkRectangle page_area;
 937         GtkBorder border;
 938         double x, y, w, h;
 939         int width, height;
 940
 941         ev_page_cache_get_size (view->page_cache, page,
 942                                 view->rotation,
 943                                 1.0,
 944                                 &width, &height);
 945
 946         if (view->rotation == 0) {
 947                 x = doc_rect->x1;
 948                 y = doc_rect->y1;
 949                 w = doc_rect->x2 - doc_rect->x1;
 950                 h = doc_rect->y2 - doc_rect->y1;
 951         } else if (view->rotation == 90) {
 952                 x = width - doc_rect->y2;
 953                 y = doc_rect->x1;
 954                 w = doc_rect->y2 - doc_rect->y1;
 955                 h = doc_rect->x2 - doc_rect->x1;
 956         } else if (view->rotation == 180) {
 957                 x = width - doc_rect->x2;
 958                 y = height - doc_rect->y2;
 959                 w = doc_rect->x2 - doc_rect->x1;
 960                 h = doc_rect->y2 - doc_rect->y1;
 961         } else if (view->rotation == 270) {
 962                 x = doc_rect->y1;
 963                 y = height - doc_rect->x2;
 964                 w = doc_rect->y2 - doc_rect->y1;
 965                 h = doc_rect->x2 - doc_rect->x1;
 966         } else {
 967                 g_assert_not_reached ();
 968         }
 969
 970         get_page_extents (view, page, &page_area, &border);
 971
 972         view_rect->x = x * view->scale + page_area.x;
 973         view_rect->y = y * view->scale + page_area.y;
 974         view_rect->width = w * view->scale;
 975         view_rect->height = h * view->scale;
 976 }
 977
 978 static void
 979 find_page_at_location (EvView  *view,
 980                        gdouble  x,
 981                        gdouble  y,
 982                        gint    *page,
 983                        gint    *x_offset,
 984                        gint    *y_offset)
 985 {
 986         int i;
 987
 988         if (view->document == NULL)
 989                 return;
 990
 991         g_assert (page);
 992         g_assert (x_offset);
 993         g_assert (y_offset);
 994
 995         for (i = view->start_page; i <= view->end_page; i++) {
 996                 GdkRectangle page_area;
 997                 GtkBorder border;
 998
 999                 if (! get_page_extents (view, i, &page_area, &border))
1000                         continue;
1001
1002                 if ((x >= page_area.x + border.left) &&
1003                     (x < page_area.x + page_area.width - border.right) &&
1004                     (y >= page_area.y + border.top) &&
1005                     (y < page_area.y + page_area.height - border.bottom)) {
1006                         *page = i;
1007                         *x_offset = x - (page_area.x + border.left);
1008                         *y_offset = y - (page_area.y + border.top);
1009                         return;
1010                 }
1011         }
1012
1013         *page = -1;
1014 }
1015
1016 static gboolean
1017 location_in_text (EvView  *view,
1018                   gdouble  x,
1019                   gdouble  y)
1020 {
1021         GdkRegion *region;
1022         gint page = -1;
1023         gint x_offset = 0, y_offset = 0;
1024
1025         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1026
1027         if (page == -1)
1028                 return FALSE;
1029
1030         region = ev_pixbuf_cache_get_text_mapping (view->pixbuf_cache, page);
1031
1032         if (region)
1033                 return gdk_region_point_in (region, x_offset / view->scale, y_offset / view->scale);
1034         else
1035                 return FALSE;
1036 }
1037
1038 static int
1039 ev_view_get_width (EvView *view)
1040 {
1041         return GTK_WIDGET (view)->allocation.width;
1042 }
1043
1044 static int
1045 ev_view_get_height (EvView *view)
1046 {
1047         return GTK_WIDGET (view)->allocation.height;
1048 }
1049
1050 static gboolean
1051 location_in_selected_text (EvView  *view,
1052                            gdouble  x,
1053                            gdouble  y)
1054 {
1055         gint page = -1;
1056         gint x_offset = 0, y_offset = 0;
1057         EvViewSelection *selection;
1058         GList *l = NULL;
1059
1060         for (l = view->selection_info.selections; l != NULL; l = l->next) {
1061                 selection = (EvViewSelection *)l->data;
1062
1063                 find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1064
1065                 if (page != selection->page)
1066                         continue;
1067
1068                 if (selection->covered_region &&
1069                     gdk_region_point_in (selection->covered_region, x_offset, y_offset))
1070                         return TRUE;
1071         }
1072
1073         return FALSE;
1074 }
1075
1076 static gboolean
1077 get_doc_point_from_offset (EvView *view,
1078                            gint    page,
1079                            gint    x_offset,
1080                            gint    y_offset,
1081                            gint   *x_new,
1082                            gint   *y_new)
1083 {
1084         int width, height;
1085         double x, y;
1086
1087         ev_page_cache_get_size (view->page_cache, page,
1088                                 view->rotation,
1089                                 1.0,
1090                                 &width, &height);
1091
1092         x_offset = x_offset / view->scale;
1093         y_offset = y_offset / view->scale;
1094
1095         if (view->rotation == 0) {
1096                 x = x_offset;
1097                 y = y_offset;
1098         } else if (view->rotation == 90) {
1099                 x = y_offset;
1100                 y = width - x_offset;
1101         } else if (view->rotation == 180) {
1102                 x = width - x_offset;
1103                 y = height - y_offset;
1104         } else if (view->rotation == 270) {
1105                 x = height - y_offset;
1106                 y = x_offset;
1107         } else {
1108                 g_assert_not_reached ();
1109         }
1110
1111         *x_new = x;
1112         *y_new = y;
1113
1114         return TRUE;
1115 }
1116
1117 /*** Hyperref ***/
1118 static EvLink *
1119 ev_view_get_link_at_location (EvView  *view,
1120                               gdouble  x,
1121                               gdouble  y)
1122 {
1123         gint page = -1;
1124         gint x_offset = 0, y_offset = 0;
1125         gint x_new = 0, y_new = 0;
1126         GList *link_mapping;
1127
1128         if (!EV_IS_DOCUMENT_LINKS (view->document))
1129                 return NULL;
1130
1131         x += view->scroll_x;
1132         y += view->scroll_y;
1133
1134         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1135
1136         if (page == -1)
1137                 return NULL;
1138
1139
1140         if (get_doc_point_from_offset (view, page, x_offset,
1141                                        y_offset, &x_new, &y_new) == FALSE)
1142                 return NULL;
1143
1144         link_mapping = ev_pixbuf_cache_get_link_mapping (view->pixbuf_cache, page);
1145
1146         if (link_mapping)
1147                 return ev_link_mapping_find (link_mapping, x_new, y_new);
1148         else
1149                 return NULL;
1150 }
1151
1152 static void
1153 goto_fitr_dest (EvView *view, EvLinkDest *dest)
1154 {
1155         EvPoint doc_point;
1156         double zoom;
1157
1158         zoom = zoom_for_size_best_fit (ev_link_dest_get_right (dest) - ev_link_dest_get_left (dest),
1159                                        ev_link_dest_get_bottom (dest) - ev_link_dest_get_top (dest),
1160                                        ev_view_get_width (view),
1161                                        ev_view_get_height (view), 0, 0);
1162
1163         ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1164         ev_view_set_zoom (view, zoom, FALSE);
1165
1166         doc_point.x = ev_link_dest_get_left (dest);
1167         doc_point.y = ev_link_dest_get_top (dest);
1168
1169         view->current_page = ev_link_dest_get_page (dest);
1170         view->pending_point = doc_point;
1171         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1172
1173         gtk_widget_queue_resize (GTK_WIDGET (view));
1174 }
1175
1176 static void
1177 goto_fitv_dest (EvView *view, EvLinkDest *dest)
1178 {
1179         EvPoint doc_point;
1180         int doc_width, doc_height, page;
1181         double zoom;
1182
1183         page = ev_link_dest_get_page (dest);
1184         ev_page_cache_get_size (view->page_cache, page, 0, 1.0, &doc_width, &doc_height);
1185
1186         doc_point.x = ev_link_dest_get_left (dest);
1187         doc_point.y = 0;
1188
1189         zoom = zoom_for_size_fit_height (doc_width - doc_point.x , doc_height,
1190                                          ev_view_get_width (view),
1191                                          ev_view_get_height (view), 0);
1192
1193         ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1194         ev_view_set_zoom (view, zoom, FALSE);
1195
1196         view->current_page = page;
1197         view->pending_point = doc_point;
1198         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1199
1200         gtk_widget_queue_resize (GTK_WIDGET (view));
1201 }
1202
1203 static void
1204 goto_fith_dest (EvView *view, EvLinkDest *dest)
1205 {
1206         EvPoint doc_point;
1207         int doc_width, doc_height, page;
1208         double zoom;
1209
1210         page = ev_link_dest_get_page (dest);
1211         ev_page_cache_get_size (view->page_cache, page, 0, 1.0, &doc_width, &doc_height);
1212
1213         doc_point.x = 0;
1214         doc_point.y = ev_link_dest_get_top (dest);
1215
1216         zoom = zoom_for_size_fit_width (doc_width, ev_link_dest_get_top (dest),
1217                                         ev_view_get_width (view),
1218                                         ev_view_get_height (view), 0);
1219
1220         ev_view_set_sizing_mode (view, EV_SIZING_FIT_WIDTH);
1221         ev_view_set_zoom (view, zoom, FALSE);
1222
1223         view->current_page = page;
1224         view->pending_point = doc_point;
1225         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1226
1227         gtk_widget_queue_resize (GTK_WIDGET (view));
1228 }
1229
1230 static void
1231 goto_fit_dest (EvView *view, EvLinkDest *dest)
1232 {
1233         double zoom;
1234         int doc_width, doc_height;
1235         int page;
1236
1237         page = ev_link_dest_get_page (dest);
1238         ev_page_cache_get_size (view->page_cache, page, 0, 1.0, &doc_width, &doc_height);
1239
1240         zoom = zoom_for_size_best_fit (doc_width, doc_height, ev_view_get_width (view),
1241                                        ev_view_get_height (view), 0, 0);
1242
1243         ev_view_set_sizing_mode (view, EV_SIZING_BEST_FIT);
1244         ev_view_set_zoom (view, zoom, FALSE);
1245
1246         view->current_page = page;
1247         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1248
1249         gtk_widget_queue_resize (GTK_WIDGET (view));
1250 }
1251
1252 static void
1253 goto_xyz_dest (EvView *view, EvLinkDest *dest)
1254 {
1255         EvPoint doc_point;
1256         gint page;
1257         double zoom;
1258
1259         zoom = ev_link_dest_get_zoom (dest);
1260         page = ev_link_dest_get_page (dest);
1261
1262         if (zoom > 1) {
1263                 ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1264                 ev_view_set_zoom (view, zoom, FALSE);
1265         }
1266
1267         doc_point.x = ev_link_dest_get_left (dest);
1268         doc_point.y = ev_link_dest_get_top (dest);
1269
1270         view->current_page = page;
1271         view->pending_point = doc_point;
1272         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1273
1274         gtk_widget_queue_resize (GTK_WIDGET (view));
1275 }
1276
1277 static void
1278 goto_dest (EvView *view, EvLinkDest *dest)
1279 {
1280         EvLinkDestType type;
1281         int page, n_pages, current_page;
1282
1283         page = ev_link_dest_get_page (dest);
1284         n_pages = ev_page_cache_get_n_pages (view->page_cache);
1285
1286         if (page < 0 || page >= n_pages)
1287                 return;
1288
1289         current_page = view->current_page;
1290
1291         type = ev_link_dest_get_dest_type (dest);
1292
1293         switch (type) {
1294                 case EV_LINK_DEST_TYPE_PAGE:
1295                         ev_page_cache_set_current_page (view->page_cache, page);
1296                         break;
1297                 case EV_LINK_DEST_TYPE_FIT:
1298                         goto_fit_dest (view, dest);
1299                         break;
1300                 case EV_LINK_DEST_TYPE_FITH:
1301                         goto_fith_dest (view, dest);
1302                         break;
1303                 case EV_LINK_DEST_TYPE_FITV:
1304                         goto_fitv_dest (view, dest);
1305                         break;
1306                 case EV_LINK_DEST_TYPE_FITR:
1307                         goto_fitr_dest (view, dest);
1308                         break;
1309                 case EV_LINK_DEST_TYPE_XYZ:
1310                         goto_xyz_dest (view, dest);
1311                         break;
1312                 case EV_LINK_DEST_TYPE_PAGE_LABEL:
1313                         ev_page_cache_set_page_label (view->page_cache, ev_link_dest_get_page_label (dest));
1314                         break;
1315                 default:
1316                         g_assert_not_reached ();
1317         }
1318
1319         if (current_page != view->current_page)
1320                 ev_page_cache_set_current_page (view->page_cache,
1321                                                 view->current_page);
1322 }
1323
1324 static void
1325 ev_view_goto_dest (EvView *view, EvLinkDest *dest)
1326 {
1327         EvLinkDestType type;
1328
1329         type = ev_link_dest_get_dest_type (dest);
1330
1331         if (type == EV_LINK_DEST_TYPE_NAMED) {
1332                 EvLinkDest  *dest2;
1333                 const gchar *named_dest;
1334
1335                 named_dest = ev_link_dest_get_named_dest (dest);
1336                 dest2 = ev_document_links_find_link_dest (EV_DOCUMENT_LINKS (view->document),
1337                                                           named_dest);
1338                 if (dest2) {
1339                         goto_dest (view, dest2);
1340                         g_object_unref (dest2);
1341                 }
1342
1343                 return;
1344         }
1345
1346         goto_dest (view, dest);
1347 }
1348
1349 void
1350 ev_view_handle_link (EvView *view, EvLink *link)
1351 {
1352         EvLinkAction    *action = NULL;
1353         EvLinkActionType type;
1354
1355         action = ev_link_get_action (link);
1356         if (!action)
1357                 return;
1358
1359         type = ev_link_action_get_action_type (action);
1360
1361         switch (type) {
1362                 case EV_LINK_ACTION_TYPE_GOTO_DEST: {
1363                         EvLinkDest *dest;
1364
1365                         g_signal_emit (view, signals[SIGNAL_HANDLE_LINK], 0, link);
1366
1367                         dest = ev_link_action_get_dest (action);
1368                         ev_view_goto_dest (view, dest);
1369                 }
1370                         break;
1371                 case EV_LINK_ACTION_TYPE_GOTO_REMOTE:
1372                 case EV_LINK_ACTION_TYPE_EXTERNAL_URI:
1373                 case EV_LINK_ACTION_TYPE_LAUNCH:
1374                 case EV_LINK_ACTION_TYPE_NAMED:
1375                         g_signal_emit (view, signals[SIGNAL_EXTERNAL_LINK], 0, action);
1376                         break;
1377         }
1378 }
1379
1380 gchar *
1381 ev_view_page_label_from_dest (EvView *view, EvLinkDest *dest)
1382 {
1383         EvLinkDestType type;
1384         gchar *msg = NULL;
1385
1386         type = ev_link_dest_get_dest_type (dest);
1387
1388         switch (type) {
1389                 case EV_LINK_DEST_TYPE_NAMED: {
1390                         EvLinkDest  *dest2;
1391                         const gchar *named_dest;
1392
1393                         named_dest = ev_link_dest_get_named_dest (dest);
1394                         dest2 = ev_document_links_find_link_dest (EV_DOCUMENT_LINKS (view->document),
1395                                                                   named_dest);
1396                         if (dest2) {
1397                                 msg = ev_page_cache_get_page_label (view->page_cache,
1398                                                                     ev_link_dest_get_page (dest2));
1399                                 g_object_unref (dest2);
1400                         }
1401                 }
1402
1403                         break;
1404                 case EV_LINK_DEST_TYPE_PAGE_LABEL: {
1405                         msg = g_strdup (ev_link_dest_get_page_label (dest));
1406                 }
1407                         break;
1408                 default:
1409                         msg = ev_page_cache_get_page_label (view->page_cache,
1410                                                             ev_link_dest_get_page (dest));
1411         }
1412
1413         return msg;
1414 }
1415
1416 static char *
1417 tip_from_action_named (EvLinkAction *action)
1418 {
1419         const gchar *name = ev_link_action_get_name (action);
1420
1421         if (g_ascii_strcasecmp (name, "FirstPage") == 0) {
1422                 return g_strdup (_("Go to first page"));
1423         } else if (g_ascii_strcasecmp (name, "PrevPage") == 0) {
1424                 return g_strdup (_("Go to previous page"));
1425         } else if (g_ascii_strcasecmp (name, "NextPage") == 0) {
1426                 return g_strdup (_("Go to next page"));
1427         } else if (g_ascii_strcasecmp (name, "LastPage") == 0) {
1428                 return g_strdup (_("Go to last page"));
1429         } else if (g_ascii_strcasecmp (name, "GoToPage") == 0) {
1430                 return g_strdup (_("Go to page"));
1431         } else if (g_ascii_strcasecmp (name, "Find") == 0) {
1432                 return g_strdup (_("Find"));
1433         }
1434
1435         return NULL;
1436 }
1437
1438 static char *
1439 tip_from_link (EvView *view, EvLink *link)
1440 {
1441         EvLinkAction *action;
1442         EvLinkActionType type;
1443         char *msg = NULL;
1444         char *page_label;
1445         const char *title;
1446
1447         action = ev_link_get_action (link);
1448         title = ev_link_get_title (link);
1449
1450         if (!action)
1451                 return title ? g_strdup (title) : NULL;
1452
1453         type = ev_link_action_get_action_type (action);
1454
1455         switch (type) {
1456                 case EV_LINK_ACTION_TYPE_GOTO_DEST:
1457                         page_label = ev_view_page_label_from_dest (view,
1458                                                                    ev_link_action_get_dest (action));
1459                         if (page_label) {
1460                                 msg = g_strdup_printf (_("Go to page %s"), page_label);
1461                                 g_free (page_label);
1462                         }
1463                         break;
1464                 case EV_LINK_ACTION_TYPE_GOTO_REMOTE:
1465                         if (title) {
1466                                 msg = g_strdup_printf (_("Go to %s on file “%s”"), title,
1467                                                        ev_link_action_get_filename (action));
1468                         } else {
1469                                 msg = g_strdup_printf (_("Go to file “%s”"),
1470                                                        ev_link_action_get_filename (action));
1471                         }
1472                         break;
1473                 case EV_LINK_ACTION_TYPE_EXTERNAL_URI:
1474                         msg = g_strdup (ev_link_action_get_uri (action));
1475                         break;
1476                 case EV_LINK_ACTION_TYPE_LAUNCH:
1477                         msg = g_strdup_printf (_("Launch %s"),
1478                                                ev_link_action_get_filename (action));
1479                         break;
1480                 case EV_LINK_ACTION_TYPE_NAMED:
1481                         msg = tip_from_action_named (action);
1482                         break;
1483                 default:
1484                         if (title)
1485                                 msg = g_strdup (title);
1486                         break;
1487         }
1488
1489         return msg;
1490 }
1491
1492 static void
1493 ev_view_handle_cursor_over_xy (EvView *view, gint x, gint y)
1494 {
1495         EvLink      *link;
1496         EvFormField *field;
1497
1498         if (view->cursor == EV_VIEW_CURSOR_HIDDEN)
1499                 return;
1500
1501         link = ev_view_get_link_at_location (view, x, y);
1502
1503 #if !GTK_CHECK_VERSION (2, 11, 7)
1504         if (view->link_tooltip == NULL) {
1505                 view->link_tooltip = ev_tooltip_new (GTK_WIDGET (view));
1506         }
1507
1508         if (view->hovered_link != link) {
1509                 view->hovered_link = link;
1510                 ev_tooltip_deactivate (EV_TOOLTIP (view->link_tooltip));
1511         }
1512 #endif
1513
1514         if (link) {
1515 #if GTK_CHECK_VERSION (2, 11, 7)
1516                 g_object_set (view, "has-tooltip", TRUE, NULL);
1517 #else
1518                 char *msg = tip_from_link (view, link);
1519
1520                 if (msg && g_utf8_validate (msg, -1, NULL)) {
1521                         EvTooltip *tooltip = EV_TOOLTIP (view->link_tooltip);
1522
1523                         ev_tooltip_set_position (tooltip, x, y);
1524                         ev_tooltip_set_text (tooltip, msg);
1525                         ev_tooltip_activate (tooltip);
1526                 }
1527                 g_free (msg);
1528 #endif
1529                 ev_view_set_cursor (view, EV_VIEW_CURSOR_LINK);
1530         } else if ((field = ev_view_get_form_field_at_location (view, x, y))) {
1531                 if (field->is_read_only) {
1532                         if (view->cursor == EV_VIEW_CURSOR_LINK ||
1533                             view->cursor == EV_VIEW_CURSOR_IBEAM)
1534                                 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
1535                 } else if (EV_IS_FORM_FIELD_TEXT (field)) {
1536                         ev_view_set_cursor (view, EV_VIEW_CURSOR_IBEAM);
1537                 } else {
1538                         ev_view_set_cursor (view, EV_VIEW_CURSOR_LINK);
1539                 }
1540         } else if (location_in_text (view, x + view->scroll_x, y + view->scroll_y)) {
1541                 ev_view_set_cursor (view, EV_VIEW_CURSOR_IBEAM);
1542         } else {
1543                 if (view->cursor == EV_VIEW_CURSOR_LINK ||
1544                     view->cursor == EV_VIEW_CURSOR_IBEAM)
1545                         ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
1546         }
1547 }
1548
1549 /*** Images ***/
1550 static EvImage *
1551 ev_view_get_image_at_location (EvView  *view,
1552                                gdouble  x,
1553                                gdouble  y)
1554 {
1555         gint page = -1;
1556         gint x_offset = 0, y_offset = 0;
1557         gint x_new = 0, y_new = 0;
1558         GList *image_mapping;
1559
1560         if (!EV_IS_DOCUMENT_IMAGES (view->document))
1561                 return NULL;
1562
1563         x += view->scroll_x;
1564         y += view->scroll_y;
1565
1566         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1567
1568         if (page == -1)
1569                 return NULL;
1570
1571         if (get_doc_point_from_offset (view, page, x_offset,
1572                                        y_offset, &x_new, &y_new) == FALSE)
1573                 return NULL;
1574
1575         image_mapping = ev_pixbuf_cache_get_image_mapping (view->pixbuf_cache, page);
1576
1577         if (image_mapping)
1578                 return ev_image_mapping_find (image_mapping, x_new, y_new);
1579         else
1580                 return NULL;
1581 }
1582
1583 /*** Forms ***/
1584 static EvFormField *
1585 ev_view_get_form_field_at_location (EvView  *view,
1586                                     gdouble  x,
1587                                     gdouble  y)
1588 {
1589         gint page = -1;
1590         gint x_offset = 0, y_offset = 0;
1591         gint x_new = 0, y_new = 0;
1592         GList *forms_mapping;
1593
1594         if (!EV_IS_DOCUMENT_FORMS (view->document))
1595                 return NULL;
1596
1597         x += view->scroll_x;
1598         y += view->scroll_y;
1599
1600         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1601
1602         if (page == -1)
1603                 return NULL;
1604
1605         if (get_doc_point_from_offset (view, page, x_offset,
1606                                        y_offset, &x_new, &y_new) == FALSE)
1607                 return NULL;
1608
1609         forms_mapping = ev_pixbuf_cache_get_form_field_mapping (view->pixbuf_cache, page);
1610
1611         if (forms_mapping)
1612                 return ev_form_field_mapping_find (forms_mapping, x_new, y_new);
1613         else
1614                 return NULL;
1615 }
1616
1617 static GdkRegion *
1618 ev_view_form_field_get_region (EvView      *view,
1619                                EvFormField *field)
1620 {
1621         EvRectangle  field_area;
1622         GdkRectangle view_area;
1623         GList       *forms_mapping;
1624
1625         forms_mapping = ev_pixbuf_cache_get_form_field_mapping (view->pixbuf_cache,
1626                                                                 field->page);
1627         ev_form_field_mapping_get_area (forms_mapping, field, &field_area);
1628         doc_rect_to_view_rect (view, field->page, &field_area, &view_area);
1629         view_area.x -= view->scroll_x;
1630         view_area.y -= view->scroll_y;
1631
1632         return gdk_region_rectangle (&view_area);
1633 }
1634
1635 static gboolean
1636 ev_view_forms_remove_widgets (EvView *view)
1637 {
1638         ev_view_remove_all (view);
1639
1640         return FALSE;
1641 }
1642
1643 static void
1644 ev_view_form_field_destroy (GtkWidget *widget,
1645                             EvView    *view)
1646 {
1647         g_idle_add ((GSourceFunc)ev_view_forms_remove_widgets, view);
1648 }
1649
1650 static GtkWidget *
1651 ev_view_form_field_button_create_widget (EvView      *view,
1652                                          EvFormField *field)
1653 {
1654         EvFormFieldButton *field_button = EV_FORM_FIELD_BUTTON (field);
1655         GdkRegion         *field_region = NULL;
1656
1657         switch (field_button->type) {
1658                 case EV_FORM_FIELD_BUTTON_PUSH:
1659                         return NULL;
1660                 case EV_FORM_FIELD_BUTTON_CHECK:
1661                 case EV_FORM_FIELD_BUTTON_RADIO: {
1662                         gboolean  state;
1663                         GList    *forms_mapping, *l;
1664
1665                         state = ev_document_forms_form_field_button_get_state (EV_DOCUMENT_FORMS (view->document),
1666                                                                                field);
1667
1668                         /* FIXME: it actually depends on NoToggleToOff flags */
1669                         if (field_button->type == EV_FORM_FIELD_BUTTON_RADIO &&
1670                             state && field_button->state)
1671                                 return NULL;
1672
1673                         field_region = ev_view_form_field_get_region (view, field);
1674
1675                         /* For radio buttons and checkbox buttons that are in a set
1676                          * we need to update also the region for the current selected item
1677                          */
1678                         forms_mapping = ev_pixbuf_cache_get_form_field_mapping (view->pixbuf_cache,
1679                                                                                 field->page);
1680                         for (l = forms_mapping; l; l = g_list_next (l)) {
1681                                 EvFormField *button = ((EvFormFieldMapping *)(l->data))->field;
1682                                 GdkRegion   *button_region;
1683
1684                                 if (button->id == field->id)
1685                                         continue;
1686
1687                                 /* FIXME: only buttons in the same group should be updated */
1688                                 if (!EV_IS_FORM_FIELD_BUTTON (button) ||
1689                                     EV_FORM_FIELD_BUTTON (button)->type != field_button->type ||
1690                                     EV_FORM_FIELD_BUTTON (button)->state != TRUE)
1691                                         continue;
1692
1693                                 button_region = ev_view_form_field_get_region (view, button);
1694                                 gdk_region_union (field_region, button_region);
1695                                 gdk_region_destroy (button_region);
1696                         }
1697
1698                         ev_document_forms_form_field_button_set_state (EV_DOCUMENT_FORMS (view->document),
1699                                                                        field, !state);
1700                         field_button->state = !state;
1701                 }
1702                         break;
1703         }
1704
1705         ev_pixbuf_cache_reload_page (view->pixbuf_cache,
1706                                      field_region,
1707                                      field->page,
1708                                      view->rotation,
1709                                      view->scale);
1710         gdk_region_destroy (field_region);
1711
1712         return NULL;
1713 }
1714
1715 static void
1716 ev_view_form_field_text_save (EvView    *view,
1717                               GtkWidget *widget)
1718 {
1719         EvFormField *field;
1720
1721         if (!view->document)
1722                 return;
1723
1724         field = g_object_get_data (G_OBJECT (widget), "form-field");
1725
1726         if (field->changed) {
1727                 EvFormFieldText *field_text = EV_FORM_FIELD_TEXT (field);
1728                 GdkRegion       *field_region;
1729
1730                 field_region = ev_view_form_field_get_region (view, field);
1731
1732                 ev_document_forms_form_field_text_set_text (EV_DOCUMENT_FORMS (view->document),
1733                                                             field, field_text->text);
1734                 field->changed = FALSE;
1735                 ev_pixbuf_cache_reload_page (view->pixbuf_cache,
1736                                              field_region,
1737                                              field->page,
1738                                              view->rotation,
1739                                              view->scale);
1740                 gdk_region_destroy (field_region);
1741         }
1742 }
1743
1744 static void
1745 ev_view_form_field_text_changed (GtkWidget   *widget,
1746                                  EvFormField *field)
1747 {
1748         EvFormFieldText *field_text = EV_FORM_FIELD_TEXT (field);
1749         gchar           *text = NULL;
1750
1751         if (GTK_IS_ENTRY (widget)) {
1752                 text = g_strdup (gtk_entry_get_text (GTK_ENTRY (widget)));
1753         } else if (GTK_IS_TEXT_BUFFER (widget)) {
1754                 GtkTextIter start, end;
1755
1756                 gtk_text_buffer_get_bounds (GTK_TEXT_BUFFER (widget), &start, &end);
1757                 text = gtk_text_buffer_get_text (GTK_TEXT_BUFFER (widget),
1758                                                  &start, &end, FALSE);
1759         }
1760
1761         if (!field_text->text ||
1762             (field_text->text && g_ascii_strcasecmp (field_text->text, text) != 0)) {
1763                 g_free (field_text->text);
1764                 field_text->text = text;
1765                 field->changed = TRUE;
1766         }
1767 }
1768
1769 static GtkWidget *
1770 ev_view_form_field_text_create_widget (EvView      *view,
1771                                        EvFormField *field)
1772 {
1773         EvFormFieldText *field_text = EV_FORM_FIELD_TEXT (field);
1774         GtkWidget       *text = NULL;
1775         gchar           *txt;
1776
1777         txt = ev_document_forms_form_field_text_get_text (EV_DOCUMENT_FORMS (view->document),
1778                                                           field);
1779
1780         switch (field_text->type) {
1781                 case EV_FORM_FIELD_TEXT_FILE_SELECT:
1782                         /* TODO */
1783                 case EV_FORM_FIELD_TEXT_NORMAL:
1784                         text = gtk_entry_new ();
1785                         gtk_entry_set_has_frame (GTK_ENTRY (text), FALSE);
1786                         gtk_entry_set_max_length (GTK_ENTRY (text), field_text->max_len);
1787                         gtk_entry_set_visibility (GTK_ENTRY (text), !field_text->is_password);
1788
1789                         if (txt) {
1790                                 gtk_entry_set_text (GTK_ENTRY (text), txt);
1791                                 g_free (txt);
1792                         }
1793
1794                         g_signal_connect (G_OBJECT (text), "changed",
1795                                           G_CALLBACK (ev_view_form_field_text_changed),
1796                                           field);
1797                         g_signal_connect_after (G_OBJECT (text), "activate",
1798                                                 G_CALLBACK (ev_view_form_field_destroy),
1799                                                 view);
1800                         break;
1801                 case EV_FORM_FIELD_TEXT_MULTILINE: {
1802                         GtkTextBuffer *buffer;
1803
1804                         text = gtk_text_view_new ();
1805                         buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (text));
1806
1807                         if (txt) {
1808                                 gtk_text_buffer_set_text (buffer, txt, -1);
1809                                 g_free (txt);
1810                         }
1811
1812                         g_signal_connect (G_OBJECT (buffer), "changed",
1813                                           G_CALLBACK (ev_view_form_field_text_changed),
1814                                           field);
1815                 }
1816                         break;
1817         }
1818
1819         g_object_weak_ref (G_OBJECT (text),
1820                            (GWeakNotify)ev_view_form_field_text_save,
1821                            view);
1822
1823         return text;
1824 }
1825
1826 static void
1827 ev_view_form_field_choice_save (EvView    *view,
1828                                 GtkWidget *widget)
1829 {
1830         EvFormField *field;
1831
1832         if (!view->document)
1833                 return;
1834
1835         field = g_object_get_data (G_OBJECT (widget), "form-field");
1836
1837         if (field->changed) {
1838                 GList             *l;
1839                 EvFormFieldChoice *field_choice = EV_FORM_FIELD_CHOICE (field);
1840                 GdkRegion         *field_region;
1841
1842                 field_region = ev_view_form_field_get_region (view, field);
1843
1844                 if (field_choice->is_editable) {
1845                         ev_document_forms_form_field_choice_set_text (EV_DOCUMENT_FORMS (view->document),
1846                                                                       field, field_choice->text);
1847                 } else {
1848                         ev_document_forms_form_field_choice_unselect_all (EV_DOCUMENT_FORMS (view->document), field);
1849                         for (l = field_choice->selected_items; l; l = g_list_next (l)) {
1850                                 ev_document_forms_form_field_choice_select_item (EV_DOCUMENT_FORMS (view->document),
1851                                                                                  field,
1852                                                                                  GPOINTER_TO_INT (l->data));
1853                         }
1854                 }
1855                 field->changed = FALSE;
1856                 ev_pixbuf_cache_reload_page (view->pixbuf_cache,
1857                                              field_region,
1858                                              field->page,
1859                                              view->rotation,
1860                                              view->scale);
1861                 gdk_region_destroy (field_region);
1862         }
1863 }
1864
1865 static void
1866 ev_view_form_field_choice_changed (GtkWidget   *widget,
1867                                    EvFormField *field)
1868 {
1869         EvFormFieldChoice *field_choice = EV_FORM_FIELD_CHOICE (field);
1870
1871         if (GTK_IS_COMBO_BOX (widget)) {
1872                 gint item;
1873
1874                 item = gtk_combo_box_get_active (GTK_COMBO_BOX (widget));
1875                 if (GPOINTER_TO_INT (field_choice->selected_items->data) != item) {
1876                         g_list_free (field_choice->selected_items);
1877                         field_choice->selected_items = NULL;
1878                         field_choice->selected_items = g_list_prepend (field_choice->selected_items,
1879                                                                        GINT_TO_POINTER (item));
1880                         field->changed = TRUE;
1881                 }
1882
1883                 if (GTK_IS_COMBO_BOX_ENTRY (widget)) {
1884                         gchar *text;
1885
1886                         text = gtk_combo_box_get_active_text (GTK_COMBO_BOX (widget));
1887                         if (!field_choice->text ||
1888                             (field_choice->text && g_ascii_strcasecmp (field_choice->text, text) != 0)) {
1889                                 g_free (field_choice->text);
1890                                 field_choice->text = text;
1891                                 field->changed = TRUE;
1892                         }
1893                 }
1894         } else if (GTK_IS_TREE_SELECTION (widget)) {
1895                 GtkTreeSelection *selection = GTK_TREE_SELECTION (widget);
1896                 GtkTreeModel     *model;
1897                 GList            *items, *l;
1898
1899                 items = gtk_tree_selection_get_selected_rows (selection, &model);
1900                 g_list_free (field_choice->selected_items);
1901                 field_choice->selected_items = NULL;
1902
1903                 for (l = items; l && l->data; l = g_list_next (l)) {
1904                         GtkTreeIter  iter;
1905                         GtkTreePath *path = (GtkTreePath *)l->data;
1906                         gint         item;
1907
1908                         gtk_tree_model_get_iter (model, &iter, path);
1909                         gtk_tree_model_get (model, &iter, 1, &item, -1);
1910
1911                         field_choice->selected_items = g_list_prepend (field_choice->selected_items,
1912                                                                        GINT_TO_POINTER (item));
1913
1914                         gtk_tree_path_free (path);
1915                 }
1916
1917                 g_list_free (items);
1918
1919                 field->changed = TRUE;
1920         }
1921 }
1922
1923 static GtkWidget *
1924 ev_view_form_field_choice_create_widget (EvView      *view,
1925                                          EvFormField *field)
1926 {
1927         EvFormFieldChoice *field_choice = EV_FORM_FIELD_CHOICE (field);
1928         GtkWidget         *choice;
1929         GtkTreeModel      *model;
1930         gint               n_items, i;
1931         gint               selected_item = 0;
1932
1933         n_items = ev_document_forms_form_field_choice_get_n_items (EV_DOCUMENT_FORMS (view->document),
1934                                                                    field);
1935         model = GTK_TREE_MODEL (gtk_list_store_new (2, G_TYPE_STRING, G_TYPE_INT));
1936         for (i = 0; i < n_items; i++) {
1937                 GtkTreeIter iter;
1938                 gchar      *item;
1939
1940                 item = ev_document_forms_form_field_choice_get_item (EV_DOCUMENT_FORMS (view->document),
1941                                                                      field, i);
1942                 if (ev_document_forms_form_field_choice_is_item_selected (
1943                             EV_DOCUMENT_FORMS (view->document), field, i)) {
1944                         selected_item = i;
1945                         /* FIXME: we need a get_selected_items function in poppler */
1946                         field_choice->selected_items = g_list_prepend (field_choice->selected_items,
1947                                                                        GINT_TO_POINTER (i));
1948                 }
1949
1950                 if (item) {
1951                         gtk_list_store_append (GTK_LIST_STORE (model), &iter);
1952                         gtk_list_store_set (GTK_LIST_STORE (model), &iter,
1953                                             0, item,
1954                                             1, i,
1955                                             -1);
1956                         g_free (item);
1957                 }
1958         }
1959
1960         if (field_choice->type == EV_FORM_FIELD_CHOICE_LIST) {
1961                 GtkCellRenderer  *renderer;
1962                 GtkWidget        *tree_view;
1963                 GtkTreeSelection *selection;
1964
1965                 tree_view = gtk_tree_view_new_with_model (model);
1966                 gtk_tree_view_set_headers_visible (GTK_TREE_VIEW (tree_view), FALSE);
1967
1968                 selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (tree_view));
1969                 if (field_choice->multi_select) {
1970                         gtk_tree_selection_set_mode (selection, GTK_SELECTION_MULTIPLE);
1971                 }
1972
1973                 /* TODO: set selected items */
1974
1975                 renderer = gtk_cell_renderer_text_new ();
1976                 gtk_tree_view_insert_column_with_attributes (GTK_TREE_VIEW (tree_view),
1977                                                              0,
1978                                                              "choix", renderer,
1979                                                              "text", 0,
1980                                                              NULL);
1981
1982                 choice = gtk_scrolled_window_new (NULL, NULL);
1983                 gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (choice),
1984                                                 GTK_POLICY_AUTOMATIC,
1985                                                 GTK_POLICY_AUTOMATIC);
1986                 gtk_container_add (GTK_CONTAINER (choice), tree_view);
1987                 gtk_widget_show (tree_view);
1988
1989                 g_signal_connect (G_OBJECT (selection), "changed",
1990                                   G_CALLBACK (ev_view_form_field_choice_changed),
1991                                   field);
1992                 g_signal_connect_after (G_OBJECT (selection), "changed",
1993                                         G_CALLBACK (ev_view_form_field_destroy),
1994                                         view);
1995         } else if (field_choice->is_editable) { /* ComboBoxEntry */
1996                 gchar *text;
1997
1998                 choice = gtk_combo_box_entry_new_with_model (model, 0);
1999                 text = ev_document_forms_form_field_choice_get_text (EV_DOCUMENT_FORMS (view->document), field);
2000                 if (text) {
2001                         gtk_entry_set_text (GTK_ENTRY (gtk_bin_get_child (GTK_BIN (choice))), text);
2002                         g_free (text);
2003                 }
2004
2005                 g_signal_connect (G_OBJECT (choice), "changed",
2006                                   G_CALLBACK (ev_view_form_field_choice_changed),
2007                                   field);
2008                 g_signal_connect_after (G_OBJECT (GTK_BIN (choice)->child), "activate",
2009                                         G_CALLBACK (ev_view_form_field_destroy),
2010                                         view);
2011         } else { /* ComboBoxText */
2012                 GtkCellRenderer *renderer;
2013
2014                 choice = gtk_combo_box_new_with_model (model);
2015                 renderer = gtk_cell_renderer_text_new ();
2016                 gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (choice),
2017                                             renderer, TRUE);
2018                 gtk_cell_layout_set_attributes (GTK_CELL_LAYOUT (choice),
2019                                                 renderer,
2020                                                 "text", 0,
2021                                                 NULL);
2022                 gtk_combo_box_set_active (GTK_COMBO_BOX (choice), selected_item);
2023                 gtk_combo_box_popup (GTK_COMBO_BOX (choice));
2024
2025                 g_signal_connect (G_OBJECT (choice), "changed",
2026                                   G_CALLBACK (ev_view_form_field_choice_changed),
2027                                   field);
2028                 g_signal_connect_after (G_OBJECT (choice), "changed",
2029                                         G_CALLBACK (ev_view_form_field_destroy),
2030                                         view);
2031         }
2032
2033         g_object_unref (model);
2034
2035         g_object_weak_ref (G_OBJECT (choice),
2036                            (GWeakNotify)ev_view_form_field_choice_save,
2037                            view);
2038
2039         return choice;
2040 }
2041
2042 static void
2043 ev_view_handle_form_field (EvView      *view,
2044                            EvFormField *field,
2045                            gdouble      x,
2046                            gdouble      y)
2047 {
2048         GtkWidget   *field_widget = NULL;
2049         GList       *form_field_mapping;
2050         EvRectangle  field_area;
2051         GdkRectangle view_area;
2052
2053         if (field->is_read_only)
2054                 return;
2055
2056         if (EV_IS_FORM_FIELD_BUTTON (field)) {
2057                 field_widget = ev_view_form_field_button_create_widget (view, field);
2058         } else if (EV_IS_FORM_FIELD_TEXT (field)) {
2059                 field_widget = ev_view_form_field_text_create_widget (view, field);
2060         } else if (EV_IS_FORM_FIELD_CHOICE (field)) {
2061                 field_widget = ev_view_form_field_choice_create_widget (view, field);
2062         } else if (EV_IS_FORM_FIELD_SIGNATURE (field)) {
2063                 /* TODO */
2064         }
2065
2066         /* Form field doesn't require a widget */
2067         if (!field_widget)
2068                 return;
2069
2070         g_object_set_data_full (G_OBJECT (field_widget), "form-field",
2071                                 g_object_ref (field),
2072                                 (GDestroyNotify)g_object_unref);
2073
2074         form_field_mapping = ev_pixbuf_cache_get_form_field_mapping (view->pixbuf_cache, field->page);
2075         ev_form_field_mapping_get_area (form_field_mapping, field, &field_area);
2076
2077         doc_rect_to_view_rect (view, field->page, &field_area, &view_area);
2078         view_area.x -= view->scroll_x;
2079         view_area.y -= view->scroll_y;
2080
2081         gtk_layout_put (GTK_LAYOUT (view), field_widget, view_area.x, view_area.y);
2082         gtk_widget_show (field_widget);
2083         gtk_widget_grab_focus (field_widget);
2084 }
2085
2086 /*** GtkWidget implementation ***/
2087
2088 static void
2089 ev_view_size_request_continuous_dual_page (EvView         *view,
2090                                            GtkRequisition *requisition)
2091 {
2092         int max_width;
2093         gint n_pages;
2094         GtkBorder border;
2095
2096         ev_page_cache_get_max_width (view->page_cache, view->rotation,
2097                                      view->scale, &max_width);
2098         compute_border (view, max_width, max_width, &border);
2099
2100         n_pages = ev_page_cache_get_n_pages (view->page_cache) + 1;
2101
2102         requisition->width = (max_width + border.left + border.right) * 2 + (view->spacing * 3);
2103         get_page_y_offset (view, n_pages, view->scale, &requisition->height);
2104
2105         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
2106                 requisition->width = 1;
2107         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
2108                 requisition->width = 1;
2109                 /* FIXME: This could actually be set on one page docs or docs
2110                  * with a strange aspect ratio. */
2111                 /* requisition->height = 1;*/
2112         }
2113 }
2114
2115 static void
2116 ev_view_size_request_continuous (EvView         *view,
2117                                  GtkRequisition *requisition)
2118 {
2119         int max_width;
2120         int n_pages;
2121         GtkBorder border;
2122
2123
2124         ev_page_cache_get_max_width (view->page_cache, view->rotation,
2125                                      view->scale, &max_width);
2126         n_pages = ev_page_cache_get_n_pages (view->page_cache);
2127         compute_border (view, max_width, max_width, &border);
2128
2129         requisition->width = max_width + (view->spacing * 2) + border.left + border.right;
2130         get_page_y_offset (view, n_pages, view->scale, &requisition->height);
2131
2132         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
2133                 requisition->width = 1;
2134         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
2135                 requisition->width = 1;
2136                 /* FIXME: This could actually be set on one page docs or docs
2137                  * with a strange aspect ratio. */
2138                 /* requisition->height = 1;*/
2139         }
2140 }
2141
2142 static void
2143 ev_view_size_request_dual_page (EvView         *view,
2144                                 GtkRequisition *requisition)
2145 {
2146         GtkBorder border;
2147         gint width, height;
2148
2149         /* Find the largest of the two. */
2150         ev_page_cache_get_size (view->page_cache,
2151                                 view->current_page,
2152                                 view->rotation,
2153                                 view->scale,
2154                                 &width, &height);
2155         if (view->current_page + 1 < ev_page_cache_get_n_pages (view->page_cache)) {
2156                 gint width_2, height_2;
2157                 ev_page_cache_get_size (view->page_cache,
2158                                         view->current_page + 1,
2159                                         view->rotation,
2160                                         view->scale,
2161                                         &width_2, &height_2);
2162                 if (width_2 > width) {
2163                         width = width_2;
2164                         height = height_2;
2165                 }
2166         }
2167         compute_border (view, width, height, &border);
2168
2169         requisition->width = ((width + border.left + border.right) * 2) +
2170                 (view->spacing * 3);
2171         requisition->height = (height + border.top + border.bottom) +
2172                 (view->spacing * 2);
2173
2174         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
2175                 requisition->width = 1;
2176         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
2177                 requisition->width = 1;
2178                 requisition->height = 1;
2179         }
2180 }
2181
2182 static void
2183 ev_view_size_request_single_page (EvView         *view,
2184                                   GtkRequisition *requisition)
2185 {
2186         GtkBorder border;
2187         gint width, height;
2188
2189         ev_page_cache_get_size (view->page_cache,
2190                                 view->current_page,
2191                                 view->rotation,
2192                                 view->scale,
2193                                 &width, &height);
2194         compute_border (view, width, height, &border);
2195
2196         requisition->width = width + border.left + border.right + (2 * view->spacing);
2197         requisition->height = height + border.top + border.bottom + (2 * view->spacing);
2198
2199         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
2200                 requisition->width = 1;
2201                 requisition->height = height + border.top + border.bottom + (2 * view->spacing);
2202         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
2203                 requisition->width = 1;
2204                 requisition->height = 1;
2205         }
2206 }
2207
2208 static void
2209 ev_view_size_request (GtkWidget      *widget,
2210                       GtkRequisition *requisition)
2211 {
2212         EvView *view = EV_VIEW (widget);
2213
2214         if (view->document == NULL) {
2215                 requisition->width = 1;
2216                 requisition->height = 1;
2217                 return;
2218         }
2219
2220         if (view->presentation) {
2221                 requisition->width = 1;
2222                 requisition->height = 1;
2223                 return;
2224         }
2225
2226         if (view->continuous && view->dual_page)
2227                 ev_view_size_request_continuous_dual_page (view, requisition);
2228         else if (view->continuous)
2229                 ev_view_size_request_continuous (view, requisition);
2230         else if (view->dual_page)
2231                 ev_view_size_request_dual_page (view, requisition);
2232         else
2233                 ev_view_size_request_single_page (view, requisition);
2234 }
2235
2236 static void
2237 ev_view_size_allocate (GtkWidget      *widget,
2238                        GtkAllocation  *allocation)
2239 {
2240         EvView *view = EV_VIEW (widget);
2241         GList  *children, *l;
2242
2243         GTK_WIDGET_CLASS (ev_view_parent_class)->size_allocate (widget, allocation);
2244
2245         if (view->sizing_mode == EV_SIZING_FIT_WIDTH ||
2246             view->sizing_mode == EV_SIZING_BEST_FIT) {
2247
2248                 g_signal_emit (view, signals[SIGNAL_ZOOM_INVALID], 0);
2249
2250                 ev_view_size_request (widget, &widget->requisition);
2251         }
2252
2253         view_set_adjustment_values (view, GTK_ORIENTATION_HORIZONTAL);
2254         view_set_adjustment_values (view, GTK_ORIENTATION_VERTICAL);
2255
2256         if (view->document)
2257                 view_update_range_and_current_page (view);
2258
2259         view->pending_scroll = SCROLL_TO_KEEP_POSITION;
2260         view->pending_resize = FALSE;
2261
2262         children = gtk_container_get_children (GTK_CONTAINER (widget));
2263         for (l = children; l && l->data; l = g_list_next (l)) {
2264                 EvFormField   *field;
2265                 EvRectangle    field_area;
2266                 GdkRectangle   view_area;
2267                 GList         *form_field_mapping;
2268                 GtkAllocation  child_allocation;
2269                 GtkRequisition child_requisition;
2270                 GtkWidget     *child = (GtkWidget *)l->data;
2271
2272                 field = g_object_get_data (G_OBJECT (child), "form-field");
2273                 if (!field)
2274                         continue;
2275
2276                 form_field_mapping = ev_pixbuf_cache_get_form_field_mapping (view->pixbuf_cache,
2277                                                                              field->page);
2278                 ev_form_field_mapping_get_area (form_field_mapping, field, &field_area);
2279
2280                 doc_rect_to_view_rect (view, field->page, &field_area, &view_area);
2281                 view_area.x -= view->scroll_x;
2282                 view_area.y -= view->scroll_y;
2283
2284                 gtk_widget_size_request (child, &child_requisition);
2285                 if (child_requisition.width != view_area.width ||
2286                     child_requisition.height != view_area.height)
2287                         gtk_widget_set_size_request (child, view_area.width, view_area.height);
2288
2289                 gtk_container_child_get (GTK_CONTAINER (widget),
2290                                          child,
2291                                          "x", &child_allocation.x,
2292                                          "y", &child_allocation.y,
2293                                          NULL);
2294                 if (child_allocation.x != view_area.x ||
2295                     child_allocation.y != view_area.y) {
2296                         gtk_layout_move (GTK_LAYOUT (widget), child, view_area.x, view_area.y);
2297                 }
2298         }
2299         g_list_free (children);
2300 }
2301
2302 static void
2303 ev_view_realize (GtkWidget *widget)
2304 {
2305         EvView *view = EV_VIEW (widget);
2306
2307         if (GTK_WIDGET_CLASS (ev_view_parent_class)->realize)
2308                 (* GTK_WIDGET_CLASS (ev_view_parent_class)->realize) (widget);
2309
2310         gdk_window_set_events (view->layout.bin_window,
2311                                (gdk_window_get_events (view->layout.bin_window) |
2312                                 GDK_EXPOSURE_MASK |
2313                                 GDK_BUTTON_PRESS_MASK |
2314                                 GDK_BUTTON_RELEASE_MASK |
2315                                 GDK_SCROLL_MASK |
2316                                 GDK_KEY_PRESS_MASK |
2317                                 GDK_POINTER_MOTION_MASK |
2318                                 GDK_POINTER_MOTION_HINT_MASK |
2319                                 GDK_ENTER_NOTIFY_MASK |
2320                                 GDK_LEAVE_NOTIFY_MASK));
2321
2322         if (view->presentation)
2323                 gdk_window_set_background (view->layout.bin_window, &widget->style->black);
2324         else
2325                 gdk_window_set_background (view->layout.bin_window, &widget->style->mid [GTK_STATE_NORMAL]);
2326 }
2327
2328 static gboolean
2329 ev_view_scroll_event (GtkWidget *widget, GdkEventScroll *event)
2330 {
2331         EvView *view = EV_VIEW (widget);
2332         guint state;
2333
2334         state = event->state & gtk_accelerator_get_default_mod_mask ();
2335
2336         if (state == GDK_CONTROL_MASK && view->presentation == FALSE) {
2337                 ev_view_set_sizing_mode (view, EV_SIZING_FREE);
2338
2339                 if (event->direction == GDK_SCROLL_UP ||
2340                     event->direction == GDK_SCROLL_LEFT) {
2341                         if (ev_view_can_zoom_in (view)) {
2342                                 ev_view_zoom_in (view);
2343                         }
2344                 } else {
2345                         if (ev_view_can_zoom_out (view)) {
2346                                 ev_view_zoom_out (view);
2347                         }
2348                 }
2349
2350                 return TRUE;
2351         }
2352
2353         view->jump_to_find_result = FALSE;
2354         /* Shift+Wheel scrolls the in the perpendicular direction */
2355         if (state & GDK_SHIFT_MASK) {
2356                 if (event->direction == GDK_SCROLL_UP)
2357                         event->direction = GDK_SCROLL_LEFT;
2358                 if (event->direction == GDK_SCROLL_LEFT)
2359                         event->direction = GDK_SCROLL_UP;
2360                 if (event->direction == GDK_SCROLL_DOWN)
2361                         event->direction = GDK_SCROLL_RIGHT;
2362                 if (event->direction == GDK_SCROLL_RIGHT)
2363                         event->direction = GDK_SCROLL_DOWN;
2364
2365                 event->state &= ~GDK_SHIFT_MASK;
2366                 state &= ~GDK_SHIFT_MASK;
2367         }
2368
2369         if (state == 0 && view->presentation) {
2370                 switch (event->direction) {
2371                         case GDK_SCROLL_DOWN:
2372                         case GDK_SCROLL_RIGHT:
2373                                 ev_view_next_page (view);
2374                                 break;
2375                         case GDK_SCROLL_UP:
2376                         case GDK_SCROLL_LEFT:
2377                                 ev_view_previous_page (view);
2378                                 break;
2379                 }
2380
2381                 return TRUE;
2382         }
2383
2384         return FALSE;
2385 }
2386
2387 static EvViewSelection *
2388 find_selection_for_page (EvView *view,
2389                          gint    page)
2390 {
2391         GList *list;
2392
2393         for (list = view->selection_info.selections; list != NULL; list = list->next) {
2394                 EvViewSelection *selection;
2395
2396                 selection = (EvViewSelection *) list->data;
2397
2398                 if (selection->page == page)
2399                         return selection;
2400         }
2401
2402         return NULL;
2403 }
2404
2405 static void
2406 draw_end_presentation_page (EvView       *view,
2407                             GdkRectangle *page_area)
2408 {
2409         PangoLayout *layout;
2410         PangoFontDescription *font_desc;
2411         gchar *markup;
2412         const gchar *text = _("End of presentation. Press Escape to exit.");
2413
2414         if (view->presentation_state != EV_PRESENTATION_END)
2415                 return;
2416
2417         layout = gtk_widget_create_pango_layout (GTK_WIDGET (view), NULL);
2418         markup = g_strdup_printf ("<span foreground=\"white\">%s</span>", text);
2419         pango_layout_set_markup (layout, markup, -1);
2420         g_free (markup);
2421
2422         font_desc = pango_font_description_new ();
2423         pango_font_description_set_size (font_desc, 16 * PANGO_SCALE);
2424         pango_layout_set_font_description (layout, font_desc);
2425
2426         gtk_paint_layout (GTK_WIDGET (view)->style,
2427                           view->layout.bin_window,
2428                           GTK_WIDGET_STATE (view),
2429                           FALSE,
2430                           page_area,
2431                           GTK_WIDGET (view),
2432                           NULL,
2433                           page_area->x + 15,
2434                           page_area->y + 15,
2435                           layout);
2436
2437         pango_font_description_free (font_desc);
2438         g_object_unref (layout);
2439 }
2440
2441 static gboolean
2442 ev_view_expose_event (GtkWidget      *widget,
2443                       GdkEventExpose *event)
2444 {
2445         EvView *view = EV_VIEW (widget);
2446         int i;
2447
2448         if (view->presentation) {
2449                 switch (view->presentation_state) {
2450                         case EV_PRESENTATION_END: {
2451                                 GdkRectangle area = {0};
2452
2453                                 area.width = widget->allocation.width;
2454                                 area.height = widget->allocation.height;
2455
2456                                 draw_end_presentation_page (view, &area);
2457                         }
2458                                 return FALSE;
2459                         case EV_PRESENTATION_BLACK:
2460                         case EV_PRESENTATION_WHITE:
2461                                 return FALSE;
2462                         case EV_PRESENTATION_NORMAL:
2463                         default:
2464                                 break;
2465                 }
2466         } else if (view->loading) {
2467                 GdkRectangle area = {0};
2468
2469                 area.width = widget->allocation.width;
2470                 area.height = widget->allocation.height;
2471
2472                 draw_loading_text (view,
2473                                    &area,
2474                                    &(event->area));
2475         }
2476
2477         if (view->document == NULL)
2478                 return FALSE;
2479
2480         for (i = view->start_page; i <= view->end_page; i++) {
2481                 GdkRectangle page_area;
2482                 GtkBorder border;
2483                 gboolean page_ready = TRUE;
2484
2485                 if (!get_page_extents (view, i, &page_area, &border))
2486                         continue;
2487
2488                 page_area.x -= view->scroll_x;
2489                 page_area.y -= view->scroll_y;
2490
2491                 draw_one_page (view, i, &page_area, &border, &(event->area), &page_ready);
2492
2493                 if (page_ready && EV_IS_DOCUMENT_FIND (view->document))
2494                         highlight_find_results (view, i);
2495         }
2496
2497         if (GTK_WIDGET_CLASS (ev_view_parent_class)->expose_event)
2498                 (* GTK_WIDGET_CLASS (ev_view_parent_class)->expose_event) (widget, event);
2499
2500         return FALSE;
2501 }
2502
2503 static gboolean
2504 ev_view_do_popup_menu (EvView *view,
2505                        gdouble x,
2506                        gdouble y)
2507 {
2508         EvLink  *link;
2509         EvImage *image;
2510
2511         image = ev_view_get_image_at_location (view, x, y);
2512         if (image) {
2513                 g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, image);
2514                 return TRUE;
2515         }
2516
2517         link = ev_view_get_link_at_location (view, x, y);
2518         if (link) {
2519                 g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, link);
2520                 return TRUE;
2521         }
2522
2523         g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, NULL);
2524
2525         return TRUE;
2526 }
2527
2528 static gboolean
2529 ev_view_popup_menu (GtkWidget *widget)
2530 {
2531         gint x, y;
2532
2533         gtk_widget_get_pointer (widget, &x, &y);
2534         return ev_view_do_popup_menu (EV_VIEW (widget), x, y);
2535 }
2536
2537 #if GTK_CHECK_VERSION (2, 11, 7)
2538 static void
2539 get_link_area (EvView       *view,
2540                gint          x,
2541                gint          y,
2542                EvLink       *link,
2543                GdkRectangle *area)
2544 {
2545         EvRectangle  ev_rect;
2546         GList       *link_mapping;
2547         gint         page;
2548         gint         x_offset = 0, y_offset = 0;
2549
2550         x += view->scroll_x;
2551         y += view->scroll_y;
2552
2553         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
2554
2555         link_mapping = ev_pixbuf_cache_get_link_mapping (view->pixbuf_cache, page);
2556         ev_link_mapping_get_area (link_mapping, link, &ev_rect);
2557
2558         doc_rect_to_view_rect (view, page, &ev_rect, area);
2559         area->y -= view->scroll_y ;
2560 }
2561
2562 static gboolean
2563 ev_view_query_tooltip (GtkWidget         *widget,
2564                        gint               x,
2565                        gint               y,
2566                        gboolean           keyboard_tip,
2567                        GtkTooltip        *tooltip)
2568 {
2569         EvView *view = EV_VIEW (widget);
2570         EvLink *link;
2571         gchar  *text;
2572
2573         link = ev_view_get_link_at_location (view, x, y);
2574         if (!link)
2575                 return FALSE;
2576
2577         text = tip_from_link (view, link);
2578         if (text && g_utf8_validate (text, -1, NULL)) {
2579                 GdkRectangle link_area;
2580
2581                 get_link_area (view, x, y, link, &link_area);
2582                 gtk_tooltip_set_text (tooltip, text);
2583                 gtk_tooltip_set_tip_area (tooltip, &link_area);
2584         }
2585         g_free (text);
2586
2587         return TRUE;
2588 }
2589 #endif /* GTK_CHECK_VERSION (2, 11, 7) */
2590
2591 static gboolean
2592 ev_view_button_press_event (GtkWidget      *widget,
2593                             GdkEventButton *event)
2594 {
2595         EvView *view = EV_VIEW (widget);
2596
2597         if (!view->document)
2598                 return FALSE;
2599
2600         if (!GTK_WIDGET_HAS_FOCUS (widget)) {
2601                 gtk_widget_grab_focus (widget);
2602         }
2603
2604         view->pressed_button = event->button;
2605         view->selection_info.in_drag = FALSE;
2606
2607         switch (event->button) {
2608                 case 1: {
2609                         EvImage *image;
2610                         EvFormField *field;
2611
2612                         if (view->selection_info.selections) {
2613                                 if (location_in_selected_text (view,
2614                                                                event->x + view->scroll_x,
2615                                                                event->y + view->scroll_y)) {
2616                                         view->selection_info.in_drag = TRUE;
2617                                 } else {
2618                                         clear_selection (view);
2619
2620                                         view->selection_info.start.x = event->x + view->scroll_x;
2621                                         view->selection_info.start.y = event->y + view->scroll_y;
2622                                 }
2623
2624                                 gtk_widget_queue_draw (widget);
2625                         } else if (!location_in_text (view, event->x + view->scroll_x, event->y + view->scroll_y) &&
2626                                    (image = ev_view_get_image_at_location (view, event->x, event->y))) {
2627                                 if (view->image_dnd_info.image)
2628                                         g_object_unref (view->image_dnd_info.image);
2629                                 view->image_dnd_info.image = g_object_ref (image);
2630                                 view->image_dnd_info.in_drag = TRUE;
2631
2632                                 view->image_dnd_info.start.x = event->x + view->scroll_x;
2633                                 view->image_dnd_info.start.y = event->y + view->scroll_y;
2634                         } else if ((field = ev_view_get_form_field_at_location (view, event->x, event->y))) {
2635                                 ev_view_remove_all (view);
2636                                 ev_view_handle_form_field (view, field, event->x, event->y);
2637                         } else {
2638                                 ev_view_remove_all (view);
2639                                 view->selection_info.start.x = event->x + view->scroll_x;
2640                                 view->selection_info.start.y = event->y + view->scroll_y;
2641                         }
2642                 }
2643                         return TRUE;
2644                 case 2:
2645                         /* use root coordinates as reference point because
2646                          * scrolling changes window relative coordinates */
2647                         view->drag_info.start.x = event->x_root;
2648                         view->drag_info.start.y = event->y_root;
2649                         view->drag_info.hadj = gtk_adjustment_get_value (view->hadjustment);
2650                         view->drag_info.vadj = gtk_adjustment_get_value (view->vadjustment);
2651
2652                         ev_view_set_cursor (view, EV_VIEW_CURSOR_DRAG);
2653
2654                         return TRUE;
2655                 case 3:
2656                         return ev_view_do_popup_menu (view, event->x, event->y);
2657         }
2658
2659         return FALSE;
2660 }
2661
2662 static void
2663 ev_view_remove_all (EvView *view)
2664 {
2665         GList *children, *child;
2666
2667         children = gtk_container_get_children (GTK_CONTAINER (view));
2668         for (child = children; child && child->data; child = g_list_next (child)) {
2669                 gtk_container_remove (GTK_CONTAINER (view),
2670                                       GTK_WIDGET (child->data));
2671         }
2672         g_list_free (children);
2673 }
2674
2675 /*** Drag and Drop ***/
2676 static void
2677 ev_view_drag_data_get (GtkWidget        *widget,
2678                        GdkDragContext   *context,
2679                        GtkSelectionData *selection_data,
2680                        guint             info,
2681                        guint             time)
2682 {
2683         EvView *view = EV_VIEW (widget);
2684
2685         switch (info) {
2686                 case TARGET_DND_TEXT:
2687                         if (view->selection_info.selections &&
2688                             ev_document_can_get_text (view->document)) {
2689                                 gchar *text;
2690
2691                                 text = get_selected_text (view);
2692
2693                                 gtk_selection_data_set_text (selection_data,
2694                                                              text,
2695                                                              strlen (text));
2696
2697                                 g_free (text);
2698                         }
2699                         break;
2700                 case TARGET_DND_IMAGE:
2701                         if (view->image_dnd_info.image) {
2702                                 GdkPixbuf *pixbuf;
2703
2704                                 pixbuf = ev_image_get_pixbuf (view->image_dnd_info.image);
2705                                 gtk_selection_data_set_pixbuf (selection_data, pixbuf);
2706                         }
2707                         break;
2708                 case TARGET_DND_URI:
2709                         if (view->image_dnd_info.image) {
2710                                 const gchar *tmp_uri;
2711                                 gchar      **uris;
2712
2713                                 tmp_uri = ev_image_save_tmp (view->image_dnd_info.image);
2714
2715                                 uris = g_new0 (gchar *, 2);
2716                                 uris[0] = (gchar *)tmp_uri;
2717
2718                                 gtk_selection_data_set_uris (selection_data, uris);
2719
2720                                 /* g_free instead of g_strfreev since tmp_uri is const */
2721                                 g_free (uris);
2722                         }
2723         }
2724 }
2725
2726 static gboolean
2727 ev_view_drag_motion (GtkWidget      *widget,
2728                      GdkDragContext *context,
2729                      gint            x,
2730                      gint            y,
2731                      guint           time)
2732 {
2733         if (gtk_drag_get_source_widget (context) == widget)
2734                 gdk_drag_status (context, 0, time);
2735         else
2736                 gdk_drag_status (context, context->suggested_action, time);
2737
2738         return TRUE;
2739 }
2740
2741 static void
2742 ev_view_drag_data_received (GtkWidget          *widget,
2743                             GdkDragContext     *context,
2744                             gint                x,
2745                             gint                y,
2746                             GtkSelectionData   *selection_data,
2747                             guint               info,
2748                             guint               time)
2749 {
2750         gchar  **uris;
2751         gint     i = 0;
2752         GSList  *uri_list = NULL;
2753
2754         uris = gtk_selection_data_get_uris (selection_data);
2755         if (!uris) {
2756                 gtk_drag_finish (context, FALSE, FALSE, time);
2757                 return;
2758         }
2759
2760         for (i = 0; uris[i]; i++) {
2761                 uri_list = g_slist_prepend (uri_list, (gpointer) uris[i]);
2762         }
2763
2764         ev_application_open_uri_list (EV_APP, uri_list,
2765                                       gtk_widget_get_screen (widget),
2766                                       0);
2767         gtk_drag_finish (context, TRUE, FALSE, time);
2768
2769         g_strfreev (uris);
2770         g_slist_free (uri_list);
2771 }
2772
2773
2774 static gboolean
2775 selection_update_idle_cb (EvView *view)
2776 {
2777         compute_selections (view, &view->selection_info.start, &view->motion);
2778         view->selection_update_id = 0;
2779         return FALSE;
2780 }
2781
2782 static gboolean
2783 selection_scroll_timeout_cb (EvView *view)
2784 {
2785         gint x, y, shift = 0;
2786         GtkWidget *widget = GTK_WIDGET (view);
2787
2788         gtk_widget_get_pointer (widget, &x, &y);
2789
2790         if (y > widget->allocation.height) {
2791                 shift = (y - widget->allocation.height) / 2;
2792         } else if (y < 0) {
2793                 shift = y / 2;
2794         }
2795
2796         if (shift)
2797                 gtk_adjustment_set_value (view->vadjustment,
2798                                           CLAMP (view->vadjustment->value + shift,
2799                                           view->vadjustment->lower,
2800                                           view->vadjustment->upper -
2801                                           view->vadjustment->page_size));
2802
2803         if (x > widget->allocation.width) {
2804                 shift = (x - widget->allocation.width) / 2;
2805         } else if (x < 0) {
2806                 shift = x / 2;
2807         }
2808
2809         if (shift)
2810                 gtk_adjustment_set_value (view->hadjustment,
2811                                           CLAMP (view->hadjustment->value + shift,
2812                                           view->hadjustment->lower,
2813                                           view->hadjustment->upper -
2814                                           view->hadjustment->page_size));
2815
2816         return TRUE;
2817 }
2818
2819 static gboolean
2820 ev_view_motion_notify_event (GtkWidget      *widget,
2821                              GdkEventMotion *event)
2822 {
2823         EvView *view = EV_VIEW (widget);
2824         gint x, y;
2825
2826         if (!view->document)
2827                 return FALSE;
2828
2829         if (event->is_hint || event->window != view->layout.bin_window) {
2830             gtk_widget_get_pointer (widget, &x, &y);
2831         } else {
2832             x = event->x;
2833             y = event->y;
2834         }
2835
2836         if (view->selection_info.in_drag) {
2837                 if (gtk_drag_check_threshold (widget,
2838                                               view->selection_info.start.x,
2839                                               view->selection_info.start.y,
2840                                               x, y)) {
2841                         GtkTargetList *target_list = gtk_target_list_new (NULL, 0);
2842
2843                         gtk_target_list_add_text_targets (target_list, TARGET_DND_TEXT);
2844
2845                         gtk_drag_begin (widget, target_list,
2846                                         GDK_ACTION_COPY,
2847                                         1, (GdkEvent *)event);
2848
2849                         view->selection_info.in_drag = FALSE;
2850
2851                         gtk_target_list_unref (target_list);
2852
2853                         return TRUE;
2854                 }
2855         } else if (view->image_dnd_info.in_drag) {
2856                 if (gtk_drag_check_threshold (widget,
2857                                               view->selection_info.start.x,
2858                                               view->selection_info.start.y,
2859                                               x, y)) {
2860                         GtkTargetList *target_list = gtk_target_list_new (NULL, 0);
2861
2862                         gtk_target_list_add_uri_targets (target_list, TARGET_DND_URI);
2863                         gtk_target_list_add_image_targets (target_list, TARGET_DND_IMAGE, TRUE);
2864
2865                         gtk_drag_begin (widget, target_list,
2866                                         GDK_ACTION_COPY,
2867                                         1, (GdkEvent *)event);
2868
2869                         view->image_dnd_info.in_drag = FALSE;
2870
2871                         gtk_target_list_unref (target_list);
2872
2873                         return TRUE;
2874                 }
2875         }
2876
2877         /* For the Evince 0.4.x release, we limit selection to un-rotated
2878          * documents only.
2879          */
2880         if (view->pressed_button == 1 && view->rotation == 0) {
2881
2882                 /* Schedule timeout to scroll during selection and additionally
2883                  * scroll once to allow arbitrary speed. */
2884                 if (!view->selection_scroll_id)
2885                     view->selection_scroll_id = g_timeout_add (SCROLL_TIME, (GSourceFunc)selection_scroll_timeout_cb, view);
2886                 else
2887                     selection_scroll_timeout_cb (view);
2888
2889                 view->selection_info.in_selection = TRUE;
2890                 view->motion.x = x + view->scroll_x;
2891                 view->motion.y = y + view->scroll_y;
2892
2893                 /* Queue an idle to handle the motion.  We do this because
2894                  * handling any selection events in the motion could be slower
2895                  * than new motion events reach us.  We always put it in the
2896                  * idle to make sure we catch up and don't visibly lag the
2897                  * mouse. */
2898                 if (!view->selection_update_id)
2899                         view->selection_update_id = g_idle_add ((GSourceFunc)selection_update_idle_cb, view);
2900
2901                 return TRUE;
2902         } else if (view->pressed_button == 2) {
2903                 if (!view->drag_info.in_drag) {
2904                         gboolean start;
2905
2906                         start = gtk_drag_check_threshold (widget,
2907                                                           view->drag_info.start.x,
2908                                                           view->drag_info.start.y,
2909                                                           event->x_root,
2910                                                           event->y_root);
2911                         view->drag_info.in_drag = start;
2912                 }
2913
2914                 if (view->drag_info.in_drag) {
2915                         int dx, dy;
2916                         gdouble dhadj_value, dvadj_value;
2917
2918                         dx = event->x_root - view->drag_info.start.x;
2919                         dy = event->y_root - view->drag_info.start.y;
2920
2921                         dhadj_value = view->hadjustment->page_size *
2922                                       (gdouble)dx / widget->allocation.width;
2923                         dvadj_value = view->vadjustment->page_size *
2924                                       (gdouble)dy / widget->allocation.height;
2925
2926                         /* clamp scrolling to visible area */
2927                         gtk_adjustment_set_value (view->hadjustment,
2928                                                   MIN(view->drag_info.hadj - dhadj_value,
2929                                                       view->hadjustment->upper -
2930                                                       view->hadjustment->page_size));
2931                         gtk_adjustment_set_value (view->vadjustment,
2932                                                   MIN(view->drag_info.vadj - dvadj_value,
2933                                                       view->vadjustment->upper -
2934                                                       view->vadjustment->page_size));
2935
2936                         return TRUE;
2937                 }
2938         } else if (view->pressed_button <= 0) {
2939                 ev_view_handle_cursor_over_xy (view, x, y);
2940                 return TRUE;
2941         }
2942
2943         return FALSE;
2944 }
2945
2946 static gboolean
2947 ev_view_button_release_event (GtkWidget      *widget,
2948                               GdkEventButton *event)
2949 {
2950         EvView *view = EV_VIEW (widget);
2951         EvLink *link;
2952
2953         if (view->pressed_button == 2) {
2954                 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
2955         }
2956
2957         if (view->document && view->pressed_button != 3) {
2958                 link = ev_view_get_link_at_location (view, event->x, event->y);
2959         } else {
2960                 link = NULL;
2961         }
2962
2963         view->pressed_button = -1;
2964         view->drag_info.in_drag = FALSE;
2965         view->image_dnd_info.in_drag = FALSE;
2966
2967         if (view->selection_scroll_id) {
2968             g_source_remove (view->selection_scroll_id);
2969             view->selection_scroll_id = 0;
2970         }
2971         if (view->selection_update_id) {
2972             g_source_remove (view->selection_update_id);
2973             view->selection_update_id = 0;
2974         }
2975
2976         if (view->selection_info.selections) {
2977                 ev_view_update_primary_selection (view);
2978
2979                 if (view->selection_info.in_drag) {
2980                         clear_selection (view);
2981                         gtk_widget_queue_draw (widget);
2982                 }
2983
2984                 view->selection_info.in_drag = FALSE;
2985         } else if (link) {
2986                 if (event->button == 2) {
2987                         EvLinkAction    *action;
2988                         EvLinkActionType type;
2989
2990                         action = ev_link_get_action (link);
2991                         if (!action)
2992                                 return FALSE;
2993
2994                         type = ev_link_action_get_action_type (action);
2995                         if (type == EV_LINK_ACTION_TYPE_GOTO_DEST) {
2996                                 g_signal_emit (view,
2997                                                signals[SIGNAL_EXTERNAL_LINK],
2998                                                0, action);
2999                         }
3000                 } else {
3001                         ev_view_handle_link (view, link);
3002                 }
3003         } else if (view->presentation) {
3004                 switch (event->button) {
3005                         case 1:
3006                                 ev_view_next_page (view);
3007                                 return TRUE;
3008                         case 3:
3009                                 ev_view_previous_page (view);
3010                                 return TRUE;
3011                 }
3012         }
3013
3014         return FALSE;
3015 }
3016
3017 /* Goto Window */
3018 /* Cut and paste from gtkwindow.c */
3019 static void
3020 send_focus_change (GtkWidget *widget,
3021                    gboolean   in)
3022 {
3023         GdkEvent *fevent = gdk_event_new (GDK_FOCUS_CHANGE);
3024
3025         g_object_ref (widget);
3026
3027         if (in)
3028                 GTK_WIDGET_SET_FLAGS (widget, GTK_HAS_FOCUS);
3029         else
3030                 GTK_WIDGET_UNSET_FLAGS (widget, GTK_HAS_FOCUS);
3031
3032         fevent->focus_change.type = GDK_FOCUS_CHANGE;
3033         fevent->focus_change.window = g_object_ref (widget->window);
3034         fevent->focus_change.in = in;
3035
3036         gtk_widget_event (widget, fevent);
3037
3038         g_object_notify (G_OBJECT (widget), "has-focus");
3039
3040         g_object_unref (widget);
3041         gdk_event_free (fevent);
3042 }
3043
3044 static void
3045 ev_view_goto_window_hide (EvView *view)
3046 {
3047         /* send focus-in event */
3048         send_focus_change (view->goto_entry, FALSE);
3049         gtk_widget_hide (view->goto_window);
3050         gtk_entry_set_text (GTK_ENTRY (view->goto_entry), "");
3051 }
3052
3053 static gboolean
3054 ev_view_goto_window_delete_event (GtkWidget   *widget,
3055                                   GdkEventAny *event,
3056                                   EvView      *view)
3057 {
3058         ev_view_goto_window_hide (view);
3059
3060         return TRUE;
3061 }
3062
3063 static gboolean
3064 key_is_numeric (guint keyval)
3065 {
3066         return ((keyval >= GDK_0 && keyval <= GDK_9) ||
3067                 (keyval >= GDK_KP_0 && keyval <= GDK_KP_9));
3068 }
3069
3070 static gboolean
3071 ev_view_goto_window_key_press_event (GtkWidget   *widget,
3072                                      GdkEventKey *event,
3073                                      EvView      *view)
3074 {
3075         switch (event->keyval) {
3076                 case GDK_Escape:
3077                 case GDK_Tab:
3078                 case GDK_KP_Tab:
3079                 case GDK_ISO_Left_Tab:
3080                         ev_view_goto_window_hide (view);
3081                         return TRUE;
3082                 case GDK_Return:
3083                 case GDK_KP_Enter:
3084                 case GDK_ISO_Enter:
3085                 case GDK_BackSpace:
3086                 case GDK_Delete:
3087                         return FALSE;
3088                 default:
3089                         if (!key_is_numeric (event->keyval))
3090                                 return TRUE;
3091         }
3092
3093         return FALSE;
3094 }
3095
3096 static gboolean
3097 ev_view_goto_window_button_press_event (GtkWidget      *widget,
3098                                         GdkEventButton *event,
3099                                         EvView         *view)
3100 {
3101         ev_view_goto_window_hide (view);
3102
3103         return TRUE;
3104 }
3105
3106 static void
3107 ev_view_goto_entry_activate (GtkEntry *entry,
3108                              EvView   *view)
3109 {
3110         const gchar *text;
3111         gint         page;
3112
3113         text = gtk_entry_get_text (entry);
3114         page = atoi (text) - 1;
3115
3116         ev_view_goto_window_hide (view);
3117
3118         if (page >= 0 &&
3119             page < ev_page_cache_get_n_pages (view->page_cache))
3120                 ev_page_cache_set_current_page (view->page_cache, page);
3121 }
3122
3123 static void
3124 ev_view_goto_window_create (EvView *view)
3125 {
3126         GtkWidget *frame, *hbox, *toplevel, *label;
3127
3128         toplevel = gtk_widget_get_toplevel (GTK_WIDGET (view));
3129
3130         if (view->goto_window) {
3131                 if (GTK_WINDOW (toplevel)->group)
3132                         gtk_window_group_add_window (GTK_WINDOW (toplevel)->group,
3133                                                      GTK_WINDOW (view->goto_window));
3134                 else if (GTK_WINDOW (view->goto_window)->group)
3135                         gtk_window_group_remove_window (GTK_WINDOW (view->goto_window)->group,
3136                                                         GTK_WINDOW (view->goto_window));
3137                 return;
3138         }
3139
3140         view->goto_window = gtk_window_new (GTK_WINDOW_POPUP);
3141
3142         if (GTK_WINDOW (toplevel)->group)
3143                 gtk_window_group_add_window (GTK_WINDOW (toplevel)->group,
3144                                              GTK_WINDOW (view->goto_window));
3145
3146         gtk_window_set_modal (GTK_WINDOW (view->goto_window), TRUE);
3147
3148         g_signal_connect (view->goto_window, "delete_event",
3149                           G_CALLBACK (ev_view_goto_window_delete_event),
3150                           view);
3151         g_signal_connect (view->goto_window, "key_press_event",
3152                           G_CALLBACK (ev_view_goto_window_key_press_event),
3153                           view);
3154         g_signal_connect (view->goto_window, "button_press_event",
3155                           G_CALLBACK (ev_view_goto_window_button_press_event),
3156                           view);
3157
3158         frame = gtk_frame_new (NULL);
3159         gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_ETCHED_IN);
3160         gtk_container_add (GTK_CONTAINER (view->goto_window), frame);
3161         gtk_widget_show (frame);
3162
3163         hbox = gtk_hbox_new (FALSE, 0);
3164         gtk_container_set_border_width (GTK_CONTAINER (hbox), 3);
3165         gtk_container_add (GTK_CONTAINER (frame), hbox);
3166         gtk_widget_show (hbox);
3167
3168         label = gtk_label_new(_("Jump to page:"));
3169         gtk_box_pack_start (GTK_BOX (hbox), label, TRUE, TRUE, 3);
3170         gtk_widget_show (label);
3171         gtk_widget_realize (label);
3172
3173         view->goto_entry = gtk_entry_new ();
3174         g_signal_connect (view->goto_entry, "activate",
3175                           G_CALLBACK (ev_view_goto_entry_activate),
3176                           view);
3177         gtk_box_pack_start_defaults (GTK_BOX (hbox), view->goto_entry);
3178         gtk_widget_show (view->goto_entry);
3179         gtk_widget_realize (view->goto_entry);
3180 }
3181
3182 static void
3183 ev_view_goto_entry_grab_focus (EvView *view)
3184 {
3185         GtkWidgetClass *entry_parent_class;
3186
3187         entry_parent_class = g_type_class_peek_parent (GTK_ENTRY_GET_CLASS (view->goto_entry));
3188         (entry_parent_class->grab_focus) (view->goto_entry);
3189
3190         send_focus_change (view->goto_entry, TRUE);
3191 }
3192
3193 static void
3194 ev_view_goto_window_send_key_event (EvView   *view,
3195                                     GdkEvent *event)
3196 {
3197         GdkEventKey *new_event;
3198         GdkScreen   *screen;
3199
3200         /* Move goto window off screen */
3201         screen = gtk_widget_get_screen (GTK_WIDGET (view));
3202         gtk_window_move (GTK_WINDOW (view->goto_window),
3203                          gdk_screen_get_width (screen) + 1,
3204                          gdk_screen_get_height (screen) + 1);
3205         gtk_widget_show (view->goto_window);
3206
3207         new_event = (GdkEventKey *) gdk_event_copy (event);
3208         g_object_unref (new_event->window);
3209         new_event->window = g_object_ref (view->goto_window->window);
3210         gtk_widget_realize (view->goto_window);
3211
3212         gtk_widget_event (view->goto_window, (GdkEvent *)new_event);
3213         gdk_event_free ((GdkEvent *)new_event);
3214         gtk_widget_hide (view->goto_window);
3215 }
3216
3217 static gboolean
3218 ev_view_key_press_event (GtkWidget   *widget,
3219                          GdkEventKey *event)
3220 {
3221         EvView *view = EV_VIEW (widget);
3222         EvPresentationState current;
3223
3224         if (!view->document)
3225                 return FALSE;
3226
3227         if (!view->presentation ||
3228             view->presentation_state == EV_PRESENTATION_END)
3229                 return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
3230
3231
3232         current = view->presentation_state;
3233
3234         switch (event->keyval) {
3235                 case GDK_b:
3236                 case GDK_B:
3237                         view->presentation_state =
3238                                 (view->presentation_state == EV_PRESENTATION_BLACK) ?
3239                                 EV_PRESENTATION_NORMAL : EV_PRESENTATION_BLACK;
3240                         break;
3241                 case GDK_w:
3242                 case GDK_W:
3243                         view->presentation_state =
3244                                 (view->presentation_state == EV_PRESENTATION_WHITE) ?
3245                                 EV_PRESENTATION_NORMAL : EV_PRESENTATION_WHITE;
3246                         break;
3247                 default:
3248                         if (view->presentation_state == EV_PRESENTATION_BLACK ||
3249                             view->presentation_state == EV_PRESENTATION_WHITE) {
3250                                 view->presentation_state = EV_PRESENTATION_NORMAL;
3251                         }
3252         }
3253
3254         if (current == view->presentation_state) {
3255                 if (ev_page_cache_get_n_pages (view->page_cache) > 1 &&
3256                     key_is_numeric (event->keyval)) {
3257                         gint x, y;
3258
3259                         ev_view_goto_window_create (view);
3260                         ev_view_goto_window_send_key_event (view, (GdkEvent *)event);
3261                         gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
3262                         gtk_window_move (GTK_WINDOW (view->goto_window), x, y);
3263                         gtk_widget_show (view->goto_window);
3264                         ev_view_goto_entry_grab_focus (view);
3265
3266                         return TRUE;
3267                 }
3268
3269                 return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
3270         }
3271
3272         switch (view->presentation_state) {
3273                 case EV_PRESENTATION_NORMAL:
3274                 case EV_PRESENTATION_BLACK:
3275                         gdk_window_set_background (view->layout.bin_window,
3276                                                    &widget->style->black);
3277                         break;
3278                 case EV_PRESENTATION_WHITE:
3279                         gdk_window_set_background (view->layout.bin_window,
3280                                                    &widget->style->white);
3281                         break;
3282                 default:
3283                         return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
3284         }
3285
3286         gtk_widget_queue_draw (widget);
3287         return TRUE;
3288 }
3289
3290 static gint
3291 ev_view_focus_in (GtkWidget     *widget,
3292                   GdkEventFocus *event)
3293 {
3294         if (EV_VIEW (widget)->pixbuf_cache)
3295                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
3296         gtk_widget_queue_draw (widget);
3297
3298         return FALSE;
3299 }
3300
3301 static gint
3302 ev_view_focus_out (GtkWidget     *widget,
3303                      GdkEventFocus *event)
3304 {
3305         if (EV_VIEW (widget)->goto_window)
3306                 ev_view_goto_window_hide (EV_VIEW (widget));
3307
3308         if (EV_VIEW (widget)->pixbuf_cache)
3309                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
3310         gtk_widget_queue_draw (widget);
3311
3312         return FALSE;
3313 }
3314
3315 static gboolean
3316 ev_view_leave_notify_event (GtkWidget *widget, GdkEventCrossing   *event)
3317 {
3318         EvView *view = EV_VIEW (widget);
3319
3320         if (view->cursor == EV_VIEW_CURSOR_LINK ||
3321             view->cursor == EV_VIEW_CURSOR_IBEAM)
3322                 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
3323
3324 #if !GTK_CHECK_VERSION (2, 11, 7)
3325         if (view->link_tooltip) {
3326                 view->hovered_link = NULL;
3327                 ev_tooltip_deactivate (EV_TOOLTIP (view->link_tooltip));
3328         }
3329 #endif
3330
3331         return FALSE;
3332 }
3333
3334 static gboolean
3335 ev_view_enter_notify_event (GtkWidget *widget, GdkEventCrossing   *event)
3336 {
3337         EvView *view = EV_VIEW (widget);
3338
3339         ev_view_handle_cursor_over_xy (view, event->x, event->y);
3340
3341         return FALSE;
3342 }
3343
3344 static void
3345 ev_view_style_set (GtkWidget *widget,
3346                    GtkStyle  *old_style)
3347 {
3348         if (EV_VIEW (widget)->pixbuf_cache)
3349                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
3350
3351         GTK_WIDGET_CLASS (ev_view_parent_class)->style_set (widget, old_style);
3352 }
3353
3354 /*** Drawing ***/
3355
3356 static guint32
3357 ev_gdk_color_to_rgb (const GdkColor *color)
3358 {
3359   guint32 result;
3360   result = (0xff0000 | (color->red & 0xff00));
3361   result <<= 8;
3362   result |= ((color->green & 0xff00) | (color->blue >> 8));
3363   return result;
3364 }
3365
3366 static void
3367 draw_rubberband (GtkWidget *widget, GdkWindow *window,
3368                  const GdkRectangle *rect, guchar alpha)
3369 {
3370         GdkGC *gc;
3371         GdkPixbuf *pixbuf;
3372         GdkColor *fill_color_gdk;
3373         guint fill_color;
3374
3375         fill_color_gdk = gdk_color_copy (&GTK_WIDGET (widget)->style->base[GTK_STATE_SELECTED]);
3376         fill_color = ev_gdk_color_to_rgb (fill_color_gdk) << 8 | alpha;
3377
3378         pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE, 8,
3379                                  rect->width, rect->height);
3380         gdk_pixbuf_fill (pixbuf, fill_color);
3381
3382         gdk_draw_pixbuf (window, NULL, pixbuf,
3383                          0, 0,
3384                          rect->x - EV_VIEW (widget)->scroll_x, rect->y - EV_VIEW (widget)->scroll_y,
3385                          rect->width, rect->height,
3386                          GDK_RGB_DITHER_NONE,
3387                          0, 0);
3388
3389         g_object_unref (pixbuf);
3390
3391         gc = gdk_gc_new (window);
3392         gdk_gc_set_rgb_fg_color (gc, fill_color_gdk);
3393         gdk_draw_rectangle (window, gc, FALSE,
3394                             rect->x - EV_VIEW (widget)->scroll_x, rect->y - EV_VIEW (widget)->scroll_y,
3395                             rect->width - 1,
3396                             rect->height - 1);
3397         g_object_unref (gc);
3398
3399         gdk_color_free (fill_color_gdk);
3400 }
3401
3402
3403 static void
3404 highlight_find_results (EvView *view, int page)
3405 {
3406         EvDocumentFind *find;
3407         int i, results = 0;
3408
3409         find = EV_DOCUMENT_FIND (view->document);
3410
3411         results = ev_document_find_get_n_results (find, page);
3412
3413         for (i = 0; i < results; i++) {
3414                 EvRectangle rectangle;
3415                 GdkRectangle view_rectangle;
3416                 guchar alpha;
3417
3418                 if (i == view->find_result && page == view->current_page) {
3419                         alpha = 0x90;
3420                 } else {
3421                         alpha = 0x20;
3422                 }
3423
3424                 ev_document_find_get_result (find, page, i, &rectangle);
3425                 doc_rect_to_view_rect (view, page, &rectangle, &view_rectangle);
3426                 draw_rubberband (GTK_WIDGET (view), view->layout.bin_window,
3427                                  &view_rectangle, alpha);
3428         }
3429 }
3430
3431 static void
3432 draw_loading_text (EvView       *view,
3433                    GdkRectangle *page_area,
3434                    GdkRectangle *expose_area)
3435 {
3436         cairo_t *cr;
3437         gint     width, height;
3438
3439         /* Don't annoy users with loading messages during presentations.
3440          * FIXME: Temporary "workaround" for
3441          * http://bugzilla.gnome.org/show_bug.cgi?id=320352 */
3442         if (view->presentation)
3443                 return;
3444
3445         if (!view->loading_text) {
3446                 const gchar *loading_text = _("Loading...");
3447                 PangoLayout *layout;
3448                 PangoFontDescription *font_desc;
3449                 PangoRectangle logical_rect;
3450                 gint target_width;
3451                 gdouble real_scale;
3452
3453                 ev_document_fc_mutex_lock ();
3454
3455                 layout = gtk_widget_create_pango_layout (GTK_WIDGET (view), loading_text);
3456
3457                 font_desc = pango_font_description_new ();
3458
3459                 /* We set the font to be 10 points, get the size, and scale appropriately */
3460                 pango_font_description_set_size (font_desc, 10 * PANGO_SCALE);
3461                 pango_layout_set_font_description (layout, font_desc);
3462                 pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
3463
3464                 target_width = MAX (page_area->width / 2, 1);
3465                 real_scale = ((double)target_width / (double) logical_rect.width) * (PANGO_SCALE * 10);
3466                 pango_font_description_set_size (font_desc, (int)real_scale);
3467                 pango_layout_set_font_description (layout, font_desc);
3468                 pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
3469
3470                 view->loading_text = cairo_image_surface_create (CAIRO_FORMAT_ARGB32,
3471                                                                  logical_rect.width,
3472                                                                  logical_rect.height);
3473                 cr = cairo_create (view->loading_text);
3474                 cairo_set_source_rgb (cr,
3475                                       155 / (double)255,
3476                                       155 / (double)255,
3477                                       155 / (double)255);
3478                 pango_cairo_show_layout (cr, layout);
3479                 cairo_destroy (cr);
3480
3481                 pango_font_description_free (font_desc);
3482                 g_object_unref (layout);
3483
3484                 ev_document_fc_mutex_unlock ();
3485         }
3486
3487         width = (page_area->width - cairo_image_surface_get_width (view->loading_text)) / 2;
3488         height = (page_area->height - cairo_image_surface_get_height (view->loading_text)) / 2;
3489
3490         cr = gdk_cairo_create (view->layout.bin_window);
3491         cairo_translate (cr,
3492                          page_area->x + width,
3493                          page_area->y + height);
3494         cairo_set_source_surface (cr, view->loading_text, 0, 0);
3495         cairo_paint (cr);
3496         cairo_destroy (cr);
3497 }
3498
3499 static void
3500 draw_one_page (EvView       *view,
3501                gint          page,
3502                GdkRectangle *page_area,
3503                GtkBorder    *border,
3504                GdkRectangle *expose_area,
3505                gboolean     *page_ready)
3506 {
3507         GdkRectangle overlap;
3508         GdkRectangle real_page_area;
3509
3510         g_assert (view->document);
3511
3512         if (! gdk_rectangle_intersect (page_area, expose_area, &overlap))
3513                 return;
3514
3515         /* Render the document itself */
3516         real_page_area = *page_area;
3517
3518         real_page_area.x += border->left;
3519         real_page_area.y += border->top;
3520         real_page_area.width -= (border->left + border->right);
3521         real_page_area.height -= (border->top + border->bottom);
3522         *page_ready = TRUE;
3523
3524         if (!view->presentation) {
3525                 gint current_page;
3526
3527                 current_page = ev_page_cache_get_current_page (view->page_cache);
3528                 ev_document_misc_paint_one_page (view->layout.bin_window,
3529                                                  GTK_WIDGET (view),
3530                                                  page_area, border,
3531                                                  page == current_page);
3532         }
3533
3534         if (gdk_rectangle_intersect (&real_page_area, expose_area, &overlap)) {
3535                 gint             width, height;
3536                 gint             page_width, page_height;
3537                 cairo_surface_t *page_surface = NULL;
3538                 gint             selection_width, selection_height;
3539                 cairo_surface_t *selection_surface = NULL;
3540                 cairo_t         *cr = NULL;
3541
3542                 page_surface = ev_pixbuf_cache_get_surface (view->pixbuf_cache, page);
3543
3544                 if (!page_surface) {
3545                         draw_loading_text (view,
3546                                            &real_page_area,
3547                                            expose_area);
3548                         *page_ready = FALSE;
3549
3550                         return;
3551                 }
3552
3553                 ev_page_cache_get_size (view->page_cache,
3554                                         page, view->rotation,
3555                                         view->scale,
3556                                         &width, &height);
3557
3558                 cr = gdk_cairo_create (view->layout.bin_window);
3559
3560                 cairo_save (cr);
3561
3562                 page_width = cairo_image_surface_get_width (page_surface);
3563                 page_height = cairo_image_surface_get_height (page_surface);
3564
3565                 cairo_rectangle (cr, overlap.x, overlap.y, overlap.width, overlap.height);
3566                 cairo_clip (cr);
3567
3568                 cairo_translate (cr, overlap.x, overlap.y);
3569
3570                 if (width != page_width || height != page_height) {
3571                         cairo_pattern_set_filter (cairo_get_source (cr),
3572                                                   CAIRO_FILTER_FAST);
3573                         cairo_scale (cr,
3574                                      (gdouble)width / page_width,
3575                                      (gdouble)height / page_height);
3576                 }
3577
3578                 cairo_surface_set_device_offset (page_surface,
3579                                                  overlap.x - real_page_area.x,
3580                                                  overlap.y - real_page_area.y);
3581
3582                 cairo_set_source_surface (cr, page_surface, 0, 0);
3583                 cairo_paint (cr);
3584
3585                 cairo_restore (cr);
3586
3587                 /* Get the selection pixbuf iff we have something to draw */
3588                 if (find_selection_for_page (view, page) &&
3589                     view->selection_mode == EV_VIEW_SELECTION_TEXT) {
3590                         selection_surface =
3591                                 ev_pixbuf_cache_get_selection_surface (view->pixbuf_cache,
3592                                                                        page,
3593                                                                        view->scale,
3594                                                                        NULL);
3595                 }
3596
3597                 if (!selection_surface) {
3598                         cairo_destroy (cr);
3599                         return;
3600                 }
3601
3602                 selection_width = cairo_image_surface_get_width (selection_surface);
3603                 selection_height = cairo_image_surface_get_height (selection_surface);
3604
3605                 cairo_rectangle (cr, overlap.x, overlap.y, overlap.width, overlap.height);
3606                 cairo_clip (cr);
3607
3608                 cairo_translate (cr, overlap.x, overlap.y);
3609
3610                 if (width != selection_width || height != selection_height) {
3611                         cairo_pattern_set_filter (cairo_get_source (cr),
3612                                                   CAIRO_FILTER_FAST);
3613                         cairo_scale (cr,
3614                                      (gdouble)width / selection_width,
3615                                      (gdouble)height / selection_height);
3616                 }
3617
3618                 cairo_surface_set_device_offset (selection_surface,
3619                                                  overlap.x - real_page_area.x,
3620                                                  overlap.y - real_page_area.y);
3621
3622                 cairo_set_source_surface (cr, selection_surface, 0, 0);
3623                 cairo_paint (cr);
3624                 cairo_destroy (cr);
3625         }
3626 }
3627
3628 /*** GObject functions ***/
3629
3630 static void
3631 ev_view_finalize (GObject *object)
3632 {
3633         EvView *view = EV_VIEW (object);
3634
3635         g_free (view->find_status);
3636
3637         clear_selection (view);
3638
3639         if (view->image_dnd_info.image)
3640                 g_object_unref (view->image_dnd_info.image);
3641         view->image_dnd_info.image = NULL;
3642
3643         G_OBJECT_CLASS (ev_view_parent_class)->finalize (object);
3644 }
3645
3646 static void
3647 ev_view_destroy (GtkObject *object)
3648 {
3649         EvView *view = EV_VIEW (object);
3650
3651         if (view->document) {
3652                 g_object_unref (view->document);
3653                 view->document = NULL;
3654         }
3655
3656         if (view->pixbuf_cache) {
3657                 g_object_unref (view->pixbuf_cache);
3658                 view->pixbuf_cache = NULL;
3659         }
3660
3661 #if !GTK_CHECK_VERSION (2, 11, 7)
3662         if (view->link_tooltip) {
3663                 gtk_widget_destroy (view->link_tooltip);
3664                 view->link_tooltip = NULL;
3665         }
3666 #endif
3667         if (view->goto_window) {
3668                 gtk_widget_destroy (view->goto_window);
3669                 view->goto_window = NULL;
3670                 view->goto_entry = NULL;
3671         }
3672
3673         if (view->selection_scroll_id) {
3674             g_source_remove (view->selection_scroll_id);
3675             view->selection_scroll_id = 0;
3676         }
3677
3678         if (view->selection_update_id) {
3679             g_source_remove (view->selection_update_id);
3680             view->selection_update_id = 0;
3681         }
3682
3683         if (view->loading_text) {
3684                 cairo_surface_destroy (view->loading_text);
3685                 view->loading_text = NULL;
3686         }
3687
3688         ev_view_presentation_transition_stop (view);
3689
3690         ev_view_set_scroll_adjustments (GTK_LAYOUT (view), NULL, NULL);
3691
3692         GTK_OBJECT_CLASS (ev_view_parent_class)->destroy (object);
3693 }
3694
3695 static void
3696 ev_view_set_property (GObject      *object,
3697                       guint         prop_id,
3698                       const GValue *value,
3699                       GParamSpec   *pspec)
3700 {
3701         EvView *view = EV_VIEW (object);
3702
3703         switch (prop_id) {
3704                 case PROP_CONTINUOUS:
3705                         ev_view_set_continuous (view, g_value_get_boolean (value));
3706                         break;
3707                 case PROP_DUAL_PAGE:
3708                         ev_view_set_dual_page (view, g_value_get_boolean (value));
3709                         break;
3710                 case PROP_FULLSCREEN:
3711                         ev_view_set_fullscreen (view, g_value_get_boolean (value));
3712                         break;
3713                 case PROP_PRESENTATION:
3714                         ev_view_set_presentation (view, g_value_get_boolean (value));
3715                         break;
3716                 case PROP_SIZING_MODE:
3717                         ev_view_set_sizing_mode (view, g_value_get_enum (value));
3718                         break;
3719                 case PROP_ZOOM:
3720                         ev_view_set_zoom (view, g_value_get_double (value), FALSE);
3721                         break;
3722                 case PROP_ROTATION:
3723                         ev_view_set_rotation (view, g_value_get_int (value));
3724                         break;
3725                 default:
3726                         G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
3727         }
3728 }
3729
3730 static AtkObject *
3731 ev_view_get_accessible (GtkWidget *widget)
3732 {
3733         static gboolean first_time = TRUE;
3734
3735         if (first_time) {
3736                 AtkObjectFactory *factory;
3737                 AtkRegistry *registry;
3738                 GType derived_type;
3739                 GType derived_atk_type;
3740
3741                 /*
3742                  * Figure out whether accessibility is enabled by looking at the
3743                  * type of the accessible object which would be created for
3744                  * the parent type of EvView.
3745                  */
3746                 derived_type = g_type_parent (EV_TYPE_VIEW);
3747
3748                 registry = atk_get_default_registry ();
3749                 factory = atk_registry_get_factory (registry,
3750                                                     derived_type);
3751                 derived_atk_type = atk_object_factory_get_accessible_type (factory);
3752                 if (g_type_is_a (derived_atk_type, GTK_TYPE_ACCESSIBLE))
3753                         atk_registry_set_factory_type (registry,
3754                                                        EV_TYPE_VIEW,
3755                                                        ev_view_accessible_factory_get_type ());
3756                 first_time = FALSE;
3757         }
3758         return GTK_WIDGET_CLASS (ev_view_parent_class)->get_accessible (widget);
3759 }
3760
3761 static void
3762 ev_view_get_property (GObject *object,
3763                       guint prop_id,
3764                       GValue *value,
3765                       GParamSpec *pspec)
3766 {
3767         EvView *view = EV_VIEW (object);
3768
3769         switch (prop_id) {
3770                 case PROP_FIND_STATUS:
3771                         g_value_set_string (value, view->find_status);
3772                         break;
3773                 case PROP_CONTINUOUS:
3774                         g_value_set_boolean (value, view->continuous);
3775                         break;
3776                 case PROP_DUAL_PAGE:
3777                         g_value_set_boolean (value, view->dual_page);
3778                         break;
3779                 case PROP_FULLSCREEN:
3780                         g_value_set_boolean (value, view->fullscreen);
3781                         break;
3782                 case PROP_PRESENTATION:
3783                         g_value_set_boolean (value, view->presentation);
3784                         break;
3785                 case PROP_SIZING_MODE:
3786                         g_value_set_enum (value, view->sizing_mode);
3787                         break;
3788                 case PROP_ZOOM:
3789                         g_value_set_double (value, view->scale);
3790                         break;
3791                 case PROP_ROTATION:
3792                         g_value_set_int (value, view->rotation);
3793                         break;
3794                 case PROP_HAS_SELECTION:
3795                         g_value_set_boolean (value,
3796                                              view->selection_info.selections != NULL);
3797                         break;
3798                 default:
3799                         G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
3800         }
3801 }
3802
3803 static void
3804 ev_view_class_init (EvViewClass *class)
3805 {
3806         GObjectClass *object_class = G_OBJECT_CLASS (class);
3807         GtkObjectClass *gtk_object_class = GTK_OBJECT_CLASS (class);
3808         GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
3809         GtkLayoutClass *layout_class = GTK_LAYOUT_CLASS (class);
3810         GtkBindingSet *binding_set;
3811
3812         object_class->finalize = ev_view_finalize;
3813         object_class->set_property = ev_view_set_property;
3814         object_class->get_property = ev_view_get_property;
3815
3816         widget_class->expose_event = ev_view_expose_event;
3817         widget_class->button_press_event = ev_view_button_press_event;
3818         widget_class->motion_notify_event = ev_view_motion_notify_event;
3819         widget_class->button_release_event = ev_view_button_release_event;
3820         widget_class->key_press_event = ev_view_key_press_event;
3821         widget_class->focus_in_event = ev_view_focus_in;
3822         widget_class->focus_out_event = ev_view_focus_out;
3823         widget_class->get_accessible = ev_view_get_accessible;
3824         widget_class->size_request = ev_view_size_request;
3825         widget_class->size_allocate = ev_view_size_allocate;
3826         widget_class->realize = ev_view_realize;
3827         widget_class->scroll_event = ev_view_scroll_event;
3828         widget_class->enter_notify_event = ev_view_enter_notify_event;
3829         widget_class->leave_notify_event = ev_view_leave_notify_event;
3830         widget_class->style_set = ev_view_style_set;
3831         widget_class->drag_data_get = ev_view_drag_data_get;
3832         widget_class->drag_motion = ev_view_drag_motion;
3833         widget_class->drag_data_received = ev_view_drag_data_received;
3834         widget_class->popup_menu = ev_view_popup_menu;
3835 #if GTK_CHECK_VERSION (2, 11, 7)
3836         widget_class->query_tooltip = ev_view_query_tooltip;
3837 #endif
3838
3839         gtk_object_class->destroy = ev_view_destroy;
3840
3841         layout_class->set_scroll_adjustments = ev_view_set_scroll_adjustments;
3842
3843         class->binding_activated = ev_view_scroll;
3844
3845         signals[SIGNAL_BINDING_ACTIVATED] = g_signal_new ("binding_activated",
3846                          G_TYPE_FROM_CLASS (object_class),
3847                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
3848                          G_STRUCT_OFFSET (EvViewClass, binding_activated),
3849                          NULL, NULL,
3850                          ev_marshal_VOID__ENUM_BOOLEAN,
3851                          G_TYPE_NONE, 2,
3852                          GTK_TYPE_SCROLL_TYPE,
3853                          G_TYPE_BOOLEAN);
3854
3855         signals[SIGNAL_ZOOM_INVALID] = g_signal_new ("zoom-invalid",
3856                          G_TYPE_FROM_CLASS (object_class),
3857                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
3858                          G_STRUCT_OFFSET (EvViewClass, zoom_invalid),
3859                          NULL, NULL,
3860                          ev_marshal_VOID__VOID,
3861                          G_TYPE_NONE, 0, G_TYPE_NONE);
3862         signals[SIGNAL_HANDLE_LINK] = g_signal_new ("handle-link",
3863                          G_TYPE_FROM_CLASS (object_class),
3864                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
3865                          G_STRUCT_OFFSET (EvViewClass, handle_link),
3866                          NULL, NULL,
3867                          g_cclosure_marshal_VOID__OBJECT,
3868                          G_TYPE_NONE, 1,
3869                          G_TYPE_OBJECT);
3870         signals[SIGNAL_EXTERNAL_LINK] = g_signal_new ("external-link",
3871                          G_TYPE_FROM_CLASS (object_class),
3872                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
3873                          G_STRUCT_OFFSET (EvViewClass, external_link),
3874                          NULL, NULL,
3875                          g_cclosure_marshal_VOID__OBJECT,
3876                          G_TYPE_NONE, 1,
3877                          G_TYPE_OBJECT);
3878         signals[SIGNAL_POPUP_MENU] = g_signal_new ("popup",
3879                          G_TYPE_FROM_CLASS (object_class),
3880                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
3881                          G_STRUCT_OFFSET (EvViewClass, popup_menu),
3882                          NULL, NULL,
3883                          g_cclosure_marshal_VOID__OBJECT,
3884                          G_TYPE_NONE, 1,
3885                          G_TYPE_OBJECT);
3886
3887
3888         g_object_class_install_property (object_class,
3889                                          PROP_FIND_STATUS,
3890                                          g_param_spec_string ("find-status",
3891                                                               "Find Status Message",
3892                                                               "The find status message",
3893                                                               NULL,
3894                                                               G_PARAM_READABLE));
3895
3896         g_object_class_install_property (object_class,
3897                                          PROP_CONTINUOUS,
3898                                          g_param_spec_boolean ("continuous",
3899                                                                "Continuous",
3900                                                                "Continuous scrolling mode",
3901                                                                TRUE,
3902                                                                G_PARAM_READWRITE));
3903
3904         g_object_class_install_property (object_class,
3905                                          PROP_DUAL_PAGE,
3906                                          g_param_spec_boolean ("dual-page",
3907                                                                "Dual Page",
3908                                                                "Two pages visible at once",
3909                                                                FALSE,
3910                                                                G_PARAM_READWRITE));
3911         g_object_class_install_property (object_class,
3912                                          PROP_FULLSCREEN,
3913                                          g_param_spec_boolean ("fullscreen",
3914                                                                "Full Screen",
3915                                                                "Draw page in a fullscreen fashion",
3916                                                                FALSE,
3917                                                                G_PARAM_READWRITE));
3918         g_object_class_install_property (object_class,
3919                                          PROP_PRESENTATION,
3920                                          g_param_spec_boolean ("presentation",
3921                                                                "Presentation",
3922                                                                "Draw page in presentation mode",
3923                                                                TRUE,
3924                                                                G_PARAM_READWRITE));
3925
3926         g_object_class_install_property (object_class,
3927                                          PROP_SIZING_MODE,
3928                                          g_param_spec_enum ("sizing-mode",
3929                                                             "Sizing Mode",
3930                                                             "Sizing Mode",
3931                                                             EV_TYPE_SIZING_MODE,
3932                                                             EV_SIZING_FIT_WIDTH,
3933                                                             G_PARAM_READWRITE));
3934
3935         g_object_class_install_property (object_class,
3936                                          PROP_ZOOM,
3937                                          g_param_spec_double ("zoom",
3938                                                               "Zoom factor",
3939                                                               "Zoom factor",
3940                                                               0,
3941                                                               G_MAXDOUBLE,
3942                                                               1.0,
3943                                                               G_PARAM_READWRITE));
3944         g_object_class_install_property (object_class,
3945                                          PROP_ROTATION,
3946                                          g_param_spec_double ("rotation",
3947                                                               "Rotation",
3948                                                               "Rotation",
3949                                                               0,
3950                                                               360,
3951                                                               0,
3952                                                               G_PARAM_READWRITE));
3953         g_object_class_install_property (object_class,
3954                                          PROP_HAS_SELECTION,
3955                                          g_param_spec_boolean ("has-selection",
3956                                                                "Has selection",
3957                                                                "The view has selections",
3958                                                                FALSE,
3959                                                                G_PARAM_READABLE));
3960
3961         binding_set = gtk_binding_set_by_class (class);
3962
3963         add_scroll_binding_keypad (binding_set, GDK_Left,  0, EV_SCROLL_STEP_BACKWARD, TRUE);
3964         add_scroll_binding_keypad (binding_set, GDK_Right, 0, EV_SCROLL_STEP_FORWARD,  TRUE);
3965         add_scroll_binding_keypad (binding_set, GDK_Left,  GDK_MOD1_MASK, EV_SCROLL_STEP_DOWN, TRUE);
3966         add_scroll_binding_keypad (binding_set, GDK_Right, GDK_MOD1_MASK, EV_SCROLL_STEP_UP,  TRUE);
3967         add_scroll_binding_keypad (binding_set, GDK_Up,    0, EV_SCROLL_STEP_BACKWARD, FALSE);
3968         add_scroll_binding_keypad (binding_set, GDK_Down,  0, EV_SCROLL_STEP_FORWARD,  FALSE);
3969         add_scroll_binding_keypad (binding_set, GDK_Up,    GDK_MOD1_MASK, EV_SCROLL_STEP_DOWN, FALSE);
3970         add_scroll_binding_keypad (binding_set, GDK_Down,  GDK_MOD1_MASK, EV_SCROLL_STEP_UP,  FALSE);
3971         gtk_binding_entry_add_signal (binding_set, GDK_H, 0, "binding_activated", 2, EV_TYPE_SCROLL_TYPE,
3972                                       EV_SCROLL_STEP_BACKWARD, G_TYPE_BOOLEAN, TRUE);
3973         gtk_binding_entry_add_signal (binding_set, GDK_J, 0, "binding_activated", 2, EV_TYPE_SCROLL_TYPE,
3974                                       EV_SCROLL_STEP_FORWARD, G_TYPE_BOOLEAN, FALSE);
3975         gtk_binding_entry_add_signal (binding_set, GDK_K, 0, "binding_activated", 2, EV_TYPE_SCROLL_TYPE,
3976                                       EV_SCROLL_STEP_BACKWARD, G_TYPE_BOOLEAN, FALSE);
3977         gtk_binding_entry_add_signal (binding_set, GDK_L, 0, "binding_activated", 2, EV_TYPE_SCROLL_TYPE,
3978                                       EV_SCROLL_STEP_FORWARD, G_TYPE_BOOLEAN, TRUE);
3979
3980 }
3981
3982 static void
3983 ev_view_init (EvView *view)
3984 {
3985         GTK_WIDGET_SET_FLAGS (view, GTK_CAN_FOCUS);
3986
3987         view->spacing = 5;
3988         view->scale = 1.0;
3989         view->current_page = 0;
3990         view->pressed_button = -1;
3991         view->cursor = EV_VIEW_CURSOR_NORMAL;
3992         view->drag_info.in_drag = FALSE;
3993         view->selection_info.selections = NULL;
3994         view->selection_info.in_selection = FALSE;
3995         view->selection_info.in_drag = FALSE;
3996         view->selection_mode = EV_VIEW_SELECTION_TEXT;
3997         view->continuous = TRUE;
3998         view->dual_page = FALSE;
3999         view->presentation = FALSE;
4000         view->presentation_state = EV_PRESENTATION_NORMAL;
4001         view->fullscreen = FALSE;
4002         view->sizing_mode = EV_SIZING_FIT_WIDTH;
4003         view->pending_scroll = SCROLL_TO_KEEP_POSITION;
4004         view->jump_to_find_result = TRUE;
4005
4006         gtk_layout_set_hadjustment (GTK_LAYOUT (view), NULL);
4007         gtk_layout_set_vadjustment (GTK_LAYOUT (view), NULL);
4008
4009         gtk_drag_dest_set (GTK_WIDGET (view),
4010                            GTK_DEST_DEFAULT_ALL,
4011                            view_drop_targets,
4012                            G_N_ELEMENTS (view_drop_targets),
4013                            GDK_ACTION_COPY);
4014 }
4015
4016 /*** Callbacks ***/
4017
4018 static void
4019 find_changed_cb (EvDocument *document, int page, EvView *view)
4020 {
4021         double percent;
4022         int n_pages;
4023
4024         percent = ev_document_find_get_progress
4025                         (EV_DOCUMENT_FIND (view->document));
4026         n_pages = ev_page_cache_get_n_pages (view->page_cache);
4027
4028         if (view->jump_to_find_result == TRUE) {
4029                 jump_to_find_page (view, EV_VIEW_FIND_NEXT, 0);
4030                 jump_to_find_result (view);
4031         }
4032         update_find_status_message (view, percent * n_pages >= n_pages - 1 );
4033         if (view->current_page == page)
4034                 gtk_widget_queue_draw (GTK_WIDGET (view));
4035 }
4036
4037 static void
4038 job_finished_cb (EvPixbufCache *pixbuf_cache,
4039                  GdkRegion     *region,
4040                  EvView        *view)
4041 {
4042         if (region) {
4043                 gdk_window_invalidate_region (view->layout.bin_window,
4044                                               region, TRUE);
4045         } else {
4046                 gtk_widget_queue_draw (GTK_WIDGET (view));
4047         }
4048 }
4049
4050 static void
4051 page_changed_cb (EvPageCache *page_cache,
4052                  int          new_page,
4053                  EvView      *view)
4054 {
4055         if (view->current_page != new_page) {
4056                 gint x, y;
4057
4058                 view->current_page = new_page;
4059                 view->pending_scroll = SCROLL_TO_PAGE_POSITION;
4060
4061                 if (view->presentation)
4062                         ev_view_presentation_transition_start (view);
4063
4064                 gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
4065                 ev_view_handle_cursor_over_xy (view, x, y);
4066
4067                 gtk_widget_queue_resize (GTK_WIDGET (view));
4068         } else {
4069                 gtk_widget_queue_draw (GTK_WIDGET (view));
4070         }
4071
4072         if (EV_IS_DOCUMENT_FIND (view->document)) {
4073                 view->find_result = 0;
4074                 update_find_status_message (view, TRUE);
4075         }
4076 }
4077
4078 static void
4079 on_adjustment_value_changed (GtkAdjustment *adjustment,
4080                              EvView        *view)
4081 {
4082         int dx = 0, dy = 0;
4083         gint x, y;
4084         GList *children, *l;
4085
4086         if (! GTK_WIDGET_REALIZED (view))
4087                 return;
4088
4089         if (view->hadjustment) {
4090                 dx = view->scroll_x - (int) view->hadjustment->value;
4091                 view->scroll_x = (int) view->hadjustment->value;
4092         } else {
4093                 view->scroll_x = 0;
4094         }
4095
4096         if (view->vadjustment) {
4097                 dy = view->scroll_y - (int) view->vadjustment->value;
4098                 view->scroll_y = (int) view->vadjustment->value;
4099         } else {
4100                 view->scroll_y = 0;
4101         }
4102
4103         children = gtk_container_get_children (GTK_CONTAINER (view));
4104         for (l = children; l && l->data; l = g_list_next (l)) {
4105                 gint       child_x, child_y;
4106                 GtkWidget *child = (GtkWidget *)l->data;
4107
4108                 gtk_container_child_get (GTK_CONTAINER (view),
4109                                          child,
4110                                          "x", &child_x,
4111                                          "y", &child_y,
4112                                          NULL);
4113                 gtk_layout_move (GTK_LAYOUT (view), child, child_x + dx, child_y + dy);
4114         }
4115         g_list_free (children);
4116
4117         if (view->pending_resize)
4118                 gtk_widget_queue_draw (GTK_WIDGET (view));
4119         else
4120                 gdk_window_scroll (view->layout.bin_window, dx, dy);
4121
4122         gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
4123         ev_view_handle_cursor_over_xy (view, x, y);
4124
4125         if (view->document)
4126                 view_update_range_and_current_page (view);
4127 }
4128
4129 GtkWidget*
4130 ev_view_new (void)
4131 {
4132         GtkWidget *view;
4133
4134         view = g_object_new (EV_TYPE_VIEW, NULL);
4135
4136         return view;
4137 }
4138
4139 static void
4140 setup_caches (EvView *view)
4141 {
4142         view->page_cache = ev_page_cache_get (view->document);
4143         g_signal_connect (view->page_cache, "page-changed", G_CALLBACK (page_changed_cb), view);
4144         view->pixbuf_cache = ev_pixbuf_cache_new (GTK_WIDGET (view), view->document);
4145         g_signal_connect (view->pixbuf_cache, "job-finished", G_CALLBACK (job_finished_cb), view);
4146         page_changed_cb (view->page_cache,
4147                          ev_page_cache_get_current_page (view->page_cache),
4148                          view);
4149 }
4150
4151 static void
4152 clear_caches (EvView *view)
4153 {
4154         if (view->pixbuf_cache) {
4155                 g_object_unref (view->pixbuf_cache);
4156                 view->pixbuf_cache = NULL;
4157         }
4158
4159         if (view->page_cache) {
4160                 view->page_cache = NULL;
4161         }
4162 }
4163
4164 void
4165 ev_view_set_loading (EvView       *view,
4166                      gboolean      loading)
4167 {
4168         view->loading = loading;
4169         gtk_widget_queue_draw (GTK_WIDGET (view));
4170 }
4171
4172 void
4173 ev_view_set_document (EvView     *view,
4174                       EvDocument *document)
4175 {
4176         g_return_if_fail (EV_IS_VIEW (view));
4177
4178         view->loading = FALSE;
4179
4180         if (document != view->document) {
4181                 clear_caches (view);
4182
4183                 if (view->document) {
4184                         g_signal_handlers_disconnect_by_func (view->document,
4185                                                               find_changed_cb,
4186                                                               view);
4187                         g_object_unref (view->document);
4188                         view->page_cache = NULL;
4189
4190                 }
4191
4192                 view->document = document;
4193                 view->find_result = 0;
4194
4195                 if (view->document) {
4196                         g_object_ref (view->document);
4197                         if (EV_IS_DOCUMENT_FIND (view->document)) {
4198                                 g_signal_connect (view->document,
4199                                                   "find_changed",
4200                                                   G_CALLBACK (find_changed_cb),
4201                                                   view);
4202                         }
4203
4204                         setup_caches (view);
4205                 }
4206
4207                 gtk_widget_queue_resize (GTK_WIDGET (view));
4208         }
4209 }
4210
4211 /*** Zoom and sizing mode ***/
4212
4213 #define EPSILON 0.0000001
4214 void
4215 ev_view_set_zoom (EvView   *view,
4216                   double    factor,
4217                   gboolean  relative)
4218 {
4219         double scale;
4220
4221         if (relative)
4222                 scale = view->scale * factor;
4223         else
4224                 scale = factor;
4225
4226         scale = CLAMP (scale, view->min_scale, view->max_scale);
4227
4228         if (ABS (view->scale - scale) < EPSILON)
4229                 return;
4230
4231         if (view->loading_text) {
4232                 cairo_surface_destroy (view->loading_text);
4233                 view->loading_text = NULL;
4234         }
4235
4236         view->scale = scale;
4237         view->pending_resize = TRUE;
4238
4239         gtk_widget_queue_resize (GTK_WIDGET (view));
4240
4241         g_object_notify (G_OBJECT (view), "zoom");
4242 }
4243
4244 double
4245 ev_view_get_zoom (EvView *view)
4246 {
4247         return view->scale;
4248 }
4249
4250 void
4251 ev_view_set_screen_dpi (EvView  *view,
4252                         gdouble  dpi)
4253 {
4254         g_return_if_fail (EV_IS_VIEW (view));
4255         g_return_if_fail (dpi > 0);
4256
4257         view->dpi = dpi;
4258         view->min_scale = MIN_SCALE * dpi / 72.0;
4259         view->max_scale = MAX_SCALE * dpi / 72.0;
4260 }
4261
4262 gboolean
4263 ev_view_get_continuous (EvView *view)
4264 {
4265         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
4266
4267         return view->continuous;
4268 }
4269
4270 void
4271 ev_view_set_continuous (EvView   *view,
4272                         gboolean  continuous)
4273 {
4274         g_return_if_fail (EV_IS_VIEW (view));
4275
4276         continuous = continuous != FALSE;
4277
4278         if (view->continuous != continuous) {
4279                 view->continuous = continuous;
4280                 view->pending_scroll = SCROLL_TO_PAGE_POSITION;
4281                 gtk_widget_queue_resize (GTK_WIDGET (view));
4282         }
4283
4284         g_object_notify (G_OBJECT (view), "continuous");
4285 }
4286
4287 gboolean
4288 ev_view_get_dual_page (EvView *view)
4289 {
4290         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
4291
4292         return view->dual_page;
4293 }
4294
4295 void
4296 ev_view_set_dual_page (EvView   *view,
4297                        gboolean  dual_page)
4298 {
4299         g_return_if_fail (EV_IS_VIEW (view));
4300
4301         dual_page = dual_page != FALSE;
4302
4303         if (view->dual_page == dual_page)
4304                 return;
4305
4306         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
4307         view->dual_page = dual_page;
4308         /* FIXME: if we're keeping the pixbuf cache around, we should extend the
4309          * preload_cache_size to be 2 if dual_page is set.
4310          */
4311         gtk_widget_queue_resize (GTK_WIDGET (view));
4312
4313         g_object_notify (G_OBJECT (view), "dual-page");
4314 }
4315
4316 void
4317 ev_view_set_fullscreen (EvView   *view,
4318                          gboolean  fullscreen)
4319 {
4320         g_return_if_fail (EV_IS_VIEW (view));
4321
4322         fullscreen = fullscreen != FALSE;
4323
4324         if (view->fullscreen == fullscreen)
4325                 return;
4326
4327         view->fullscreen = fullscreen;
4328         gtk_widget_queue_resize (GTK_WIDGET (view));
4329
4330         g_object_notify (G_OBJECT (view), "fullscreen");
4331 }
4332
4333 gboolean
4334 ev_view_get_fullscreen (EvView *view)
4335 {
4336         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
4337
4338         return view->fullscreen;
4339 }
4340
4341 void
4342 ev_view_set_presentation (EvView   *view,
4343                           gboolean  presentation)
4344 {
4345         g_return_if_fail (EV_IS_VIEW (view));
4346
4347         presentation = presentation != FALSE;
4348
4349         if (view->presentation == presentation)
4350                 return;
4351
4352         if (!presentation)
4353                 view->presentation_state = EV_PRESENTATION_NORMAL;
4354
4355         view->presentation = presentation;
4356         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
4357
4358         if (presentation) {
4359                 view->sizing_mode_saved = view->sizing_mode;
4360                 view->scale_saved = view->scale;
4361                 ev_view_set_sizing_mode (view, EV_SIZING_BEST_FIT);
4362         } else {
4363                 ev_view_set_sizing_mode (view, view->sizing_mode_saved);
4364                 ev_view_set_zoom (view, view->scale_saved, FALSE);
4365         }
4366
4367         gtk_widget_queue_resize (GTK_WIDGET (view));
4368
4369         if (presentation)
4370                 ev_view_presentation_transition_start (view);
4371         else
4372                 ev_view_presentation_transition_stop (view);
4373
4374         if (GTK_WIDGET_REALIZED (view)) {
4375                 if (view->presentation)
4376                         gdk_window_set_background (view->layout.bin_window,
4377                                                    &GTK_WIDGET (view)->style->black);
4378                 else
4379                         gdk_window_set_background (view->layout.bin_window,
4380                                                    &GTK_WIDGET (view)->style->mid [GTK_STATE_NORMAL]);
4381         }
4382
4383         g_object_notify (G_OBJECT (view), "presentation");
4384 }
4385
4386 gboolean
4387 ev_view_get_presentation (EvView *view)
4388 {
4389         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
4390
4391         return view->presentation;
4392 }
4393
4394 static gboolean
4395 transition_next_page (EvView *view)
4396 {
4397         ev_view_next_page (view);
4398
4399         return FALSE;
4400 }
4401
4402 static void
4403 ev_view_presentation_transition_stop (EvView *view)
4404 {
4405         if (view->trans_timeout_id > 0)
4406                 g_source_remove (view->trans_timeout_id);
4407         view->trans_timeout_id = 0;
4408 }
4409
4410 static void
4411 ev_view_presentation_transition_start (EvView *view)
4412 {
4413         gdouble duration;
4414
4415         if (!EV_IS_DOCUMENT_TRANSITION (view->document))
4416                 return;
4417
4418         ev_view_presentation_transition_stop (view);
4419
4420         duration = ev_document_transition_get_page_duration (EV_DOCUMENT_TRANSITION (view->document),
4421                                                              view->current_page);
4422         if (duration > 0) {
4423 #if GLIB_CHECK_VERSION (2, 13, 0)
4424                 view->trans_timeout_id =
4425                         g_timeout_add_seconds (duration,
4426                                                (GSourceFunc) transition_next_page,
4427                                                view);
4428 #else
4429                 view->trans_timeout_id =
4430                         g_timeout_add (duration * 1000,
4431                                        (GSourceFunc) transition_next_page,
4432                                        view);
4433 #endif
4434         }
4435 }
4436
4437 void
4438 ev_view_set_sizing_mode (EvView       *view,
4439                          EvSizingMode  sizing_mode)
4440 {
4441         g_return_if_fail (EV_IS_VIEW (view));
4442
4443         if (view->sizing_mode == sizing_mode)
4444                 return;
4445
4446         view->sizing_mode = sizing_mode;
4447         gtk_widget_queue_resize (GTK_WIDGET (view));
4448
4449         g_object_notify (G_OBJECT (view), "sizing-mode");
4450 }
4451
4452 EvSizingMode
4453 ev_view_get_sizing_mode (EvView *view)
4454 {
4455         g_return_val_if_fail (EV_IS_VIEW (view), EV_SIZING_FREE);
4456
4457         return view->sizing_mode;
4458 }
4459
4460 gboolean
4461 ev_view_can_zoom_in (EvView *view)
4462 {
4463         return view->scale * ZOOM_IN_FACTOR <= view->max_scale;
4464 }
4465
4466 gboolean
4467 ev_view_can_zoom_out (EvView *view)
4468 {
4469         return view->scale * ZOOM_OUT_FACTOR >= view->min_scale;
4470 }
4471
4472 void
4473 ev_view_zoom_in (EvView *view)
4474 {
4475         g_return_if_fail (view->sizing_mode == EV_SIZING_FREE);
4476
4477         if (view->presentation)
4478                 return;
4479
4480         view->pending_scroll = SCROLL_TO_CENTER;
4481         ev_view_set_zoom (view, ZOOM_IN_FACTOR, TRUE);
4482 }
4483
4484 void
4485 ev_view_zoom_out (EvView *view)
4486 {
4487         g_return_if_fail (view->sizing_mode == EV_SIZING_FREE);
4488
4489         if (view->presentation)
4490                 return;
4491
4492         view->pending_scroll = SCROLL_TO_CENTER;
4493         ev_view_set_zoom (view, ZOOM_OUT_FACTOR, TRUE);
4494 }
4495
4496 void
4497 ev_view_rotate_right (EvView *view)
4498 {
4499         int rotation = view->rotation + 90;
4500
4501         if (rotation >= 360) {
4502                 rotation -= 360;
4503         }
4504
4505         ev_view_set_rotation (view, rotation);
4506 }
4507
4508 void
4509 ev_view_rotate_left (EvView *view)
4510 {
4511         int rotation = view->rotation - 90;
4512
4513         if (rotation < 0) {
4514                 rotation += 360;
4515         }
4516
4517         ev_view_set_rotation (view, rotation);
4518 }
4519
4520 void
4521 ev_view_set_rotation (EvView *view, int rotation)
4522 {
4523         view->rotation = rotation;
4524
4525         if (view->pixbuf_cache) {
4526                 ev_pixbuf_cache_clear (view->pixbuf_cache);
4527                 gtk_widget_queue_resize (GTK_WIDGET (view));
4528         }
4529
4530         if (rotation != 0)
4531                 clear_selection (view);
4532
4533         g_object_notify (G_OBJECT (view), "rotation");
4534 }
4535
4536 int
4537 ev_view_get_rotation (EvView *view)
4538 {
4539         return view->rotation;
4540 }
4541
4542 static double
4543 zoom_for_size_fit_width (int doc_width,
4544                          int doc_height,
4545                          int target_width,
4546                          int target_height,
4547                          int vsb_width)
4548 {
4549         double scale;
4550
4551         scale = (double)target_width / doc_width;
4552
4553         if (doc_height * scale > target_height)
4554                 scale = (double) (target_width - vsb_width) / doc_width;
4555
4556         return scale;
4557 }
4558
4559 static double
4560 zoom_for_size_fit_height (int doc_width,
4561                           int doc_height,
4562                           int target_width,
4563                           int target_height,
4564                           int vsb_height)
4565 {
4566         double scale;
4567
4568         scale = (double)target_height / doc_height;
4569
4570         if (doc_width * scale > target_width)
4571                 scale = (double) (target_height - vsb_height) / doc_height;
4572
4573         return scale;
4574 }
4575
4576 static double
4577 zoom_for_size_best_fit (int doc_width,
4578                         int doc_height,
4579                         int target_width,
4580                         int target_height,
4581                         int vsb_width,
4582                         int hsb_width)
4583 {
4584         double w_scale;
4585         double h_scale;
4586
4587         w_scale = (double)target_width / doc_width;
4588         h_scale = (double)target_height / doc_height;
4589
4590         if (doc_height * w_scale > target_height)
4591                 w_scale = (double) (target_width - vsb_width) / doc_width;
4592         if (doc_width * h_scale > target_width)
4593                 h_scale = (double) (target_height - hsb_width) / doc_height;
4594
4595         return MIN (w_scale, h_scale);
4596 }
4597
4598
4599 static void
4600 ev_view_zoom_for_size_presentation (EvView *view,
4601                                     int     width,
4602                                     int     height)
4603 {
4604         int doc_width, doc_height;
4605         gdouble scale;
4606
4607         ev_page_cache_get_size (view->page_cache,
4608                                 view->current_page,
4609                                 view->rotation,
4610                                 1.0,
4611                                 &doc_width,
4612                                 &doc_height);
4613         scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, 0, 0);
4614         ev_view_set_zoom (view, scale, FALSE);
4615 }
4616
4617 static void
4618 ev_view_zoom_for_size_continuous_and_dual_page (EvView *view,
4619                            int     width,
4620                            int     height,
4621                            int     vsb_width,
4622                            int     hsb_height)
4623 {
4624         int doc_width, doc_height;
4625         GtkBorder border;
4626         gdouble scale;
4627
4628         ev_page_cache_get_max_width (view->page_cache,
4629                                      view->rotation,
4630                                      1.0,
4631                                      &doc_width);
4632         ev_page_cache_get_max_height (view->page_cache,
4633                                       view->rotation,
4634                                       1.0,
4635                                       &doc_height);
4636         compute_border (view, doc_width, doc_height, &border);
4637
4638         doc_width = doc_width * 2;
4639         width -= (2 * (border.left + border.right) + 3 * view->spacing);
4640         height -= (border.top + border.bottom + 2 * view->spacing - 1);
4641
4642         /* FIXME: We really need to calculate the overall height here, not the
4643          * page height.  We assume there's always a vertical scrollbar for
4644          * now.  We need to fix this. */
4645         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
4646                 scale = zoom_for_size_fit_width (doc_width, doc_height, width - vsb_width, height, 0);
4647         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
4648                 scale = zoom_for_size_best_fit (doc_width, doc_height, width - vsb_width, height, 0, hsb_height);
4649         else
4650                 g_assert_not_reached ();
4651
4652         ev_view_set_zoom (view, scale, FALSE);
4653 }
4654
4655 static void
4656 ev_view_zoom_for_size_continuous (EvView *view,
4657                                   int     width,
4658                                   int     height,
4659                                   int     vsb_width,
4660                                   int     hsb_height)
4661 {
4662         int doc_width, doc_height;
4663         GtkBorder border;
4664         gdouble scale;
4665
4666         ev_page_cache_get_max_width (view->page_cache,
4667                                      view->rotation,
4668                                      1.0,
4669                                      &doc_width);
4670         ev_page_cache_get_max_height (view->page_cache,
4671                                       view->rotation,
4672                                       1.0,
4673                                       &doc_height);
4674         compute_border (view, doc_width, doc_height, &border);
4675
4676         width -= (border.left + border.right + 2 * view->spacing);
4677         height -= (border.top + border.bottom + 2 * view->spacing - 1);
4678
4679         /* FIXME: We really need to calculate the overall height here, not the
4680          * page height.  We assume there's always a vertical scrollbar for
4681          * now.  We need to fix this. */
4682         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
4683                 scale = zoom_for_size_fit_width (doc_width, doc_height, width - vsb_width, height, 0);
4684         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
4685                 scale = zoom_for_size_best_fit (doc_width, doc_height, width - vsb_width, height, 0, hsb_height);
4686         else
4687                 g_assert_not_reached ();
4688
4689         ev_view_set_zoom (view, scale, FALSE);
4690 }
4691
4692 static void
4693 ev_view_zoom_for_size_dual_page (EvView *view,
4694                                  int     width,
4695                                  int     height,
4696                                  int     vsb_width,
4697                                  int     hsb_height)
4698 {
4699         GtkBorder border;
4700         gint doc_width, doc_height;
4701         gdouble scale;
4702         gint other_page;
4703
4704         other_page = view->current_page ^ 1;
4705
4706         /* Find the largest of the two. */
4707         ev_page_cache_get_size (view->page_cache,
4708                                 view->current_page,
4709                                 view->rotation,
4710                                 1.0,
4711                                 &doc_width, &doc_height);
4712
4713         if (other_page < ev_page_cache_get_n_pages (view->page_cache)) {
4714                 gint width_2, height_2;
4715                 ev_page_cache_get_size (view->page_cache,
4716                                         other_page,
4717                                         view->rotation,
4718                                         1.0,
4719                                         &width_2, &height_2);
4720                 if (width_2 > doc_width)
4721                         doc_width = width_2;
4722                 if (height_2 > doc_height)
4723                         doc_height = height_2;
4724         }
4725         compute_border (view, doc_width, doc_height, &border);
4726
4727         doc_width = doc_width * 2;
4728         width -= ((border.left + border.right)* 2 + 3 * view->spacing);
4729         height -= (border.top + border.bottom + 2 * view->spacing);
4730
4731         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
4732                 scale = zoom_for_size_fit_width (doc_width, doc_height, width, height, vsb_width);
4733         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
4734                 scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, vsb_width, hsb_height);
4735         else
4736                 g_assert_not_reached ();
4737
4738         ev_view_set_zoom (view, scale, FALSE);
4739 }
4740
4741 static void
4742 ev_view_zoom_for_size_single_page (EvView *view,
4743                                    int     width,
4744                                    int     height,
4745                                    int     vsb_width,
4746                                    int     hsb_height)
4747 {
4748         int doc_width, doc_height;
4749         GtkBorder border;
4750         gdouble scale;
4751
4752         ev_page_cache_get_size (view->page_cache,
4753                                 view->current_page,
4754                                 view->rotation,
4755                                 1.0,
4756                                 &doc_width,
4757                                 &doc_height);
4758         /* Get an approximate border */
4759         compute_border (view, width, height, &border);
4760
4761         width -= (border.left + border.right + 2 * view->spacing);
4762         height -= (border.top + border.bottom + 2 * view->spacing);
4763
4764         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
4765                 scale = zoom_for_size_fit_width (doc_width, doc_height, width, height, vsb_width);
4766         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
4767                 scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, vsb_width, hsb_height);
4768         else
4769                 g_assert_not_reached ();
4770
4771         ev_view_set_zoom (view, scale, FALSE);
4772 }
4773
4774 static void
4775 ev_view_set_zoom_for_size (EvView *view,
4776                            int     width,
4777                            int     height,
4778                            int     vsb_width,
4779                            int     hsb_height)
4780 {
4781         g_return_if_fail (EV_IS_VIEW (view));
4782         g_return_if_fail (view->sizing_mode == EV_SIZING_FIT_WIDTH ||
4783                           view->sizing_mode == EV_SIZING_BEST_FIT);
4784         g_return_if_fail (width >= 0);
4785         g_return_if_fail (height >= 0);
4786
4787         if (view->document == NULL)
4788                 return;
4789
4790         if (view->presentation)
4791                 ev_view_zoom_for_size_presentation (view, width, height);
4792         else if (view->continuous && view->dual_page)
4793                 ev_view_zoom_for_size_continuous_and_dual_page (view, width, height, vsb_width, hsb_height);
4794         else if (view->continuous)
4795                 ev_view_zoom_for_size_continuous (view, width, height, vsb_width, hsb_height);
4796         else if (view->dual_page)
4797                 ev_view_zoom_for_size_dual_page (view, width, height, vsb_width, hsb_height);
4798         else
4799                 ev_view_zoom_for_size_single_page (view, width, height, vsb_width, hsb_height);
4800 }
4801
4802 /*** Find ***/
4803 static void
4804 update_find_status_message (EvView *view, gboolean this_page)
4805 {
4806         char *message;
4807
4808         if (this_page) {
4809                 int results;
4810
4811                 results = ev_document_find_get_n_results
4812                                 (EV_DOCUMENT_FIND (view->document),
4813                                  view->current_page);
4814                 /* TRANS: Sometimes this could be better translated as
4815                    "%d hit(s) on this page".  Therefore this string
4816                    contains plural cases. */
4817                 message = g_strdup_printf (ngettext ("%d found on this page",
4818                                                      "%d found on this page",
4819                                                      results),
4820                                            results);
4821         } else {
4822                 double percent;
4823
4824                 percent = ev_document_find_get_progress
4825                                 (EV_DOCUMENT_FIND (view->document));
4826                 message = g_strdup_printf (_("%3d%% remaining to search"),
4827                                            (int) ((1.0 - percent) * 100));
4828
4829         }
4830         ev_view_set_find_status (view, message);
4831         g_free (message);
4832 }
4833
4834 const char *
4835 ev_view_get_find_status (EvView *view)
4836 {
4837         g_return_val_if_fail (EV_IS_VIEW (view), NULL);
4838
4839         return view->find_status;
4840 }
4841
4842 static void
4843 ev_view_set_find_status (EvView *view, const char *message)
4844 {
4845         g_return_if_fail (EV_IS_VIEW (view));
4846
4847         g_free (view->find_status);
4848         view->find_status = g_strdup (message);
4849         g_object_notify (G_OBJECT (view), "find-status");
4850 }
4851
4852 static void
4853 jump_to_find_result (EvView *view)
4854 {
4855         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
4856         EvRectangle rect;
4857         GdkRectangle view_rect;
4858         int n_results;
4859         int page = view->current_page;
4860
4861         n_results = ev_document_find_get_n_results (find, page);
4862
4863         if (n_results > 0  && view->find_result < n_results) {
4864                 ev_document_find_get_result
4865                         (find, page, view->find_result, &rect);
4866
4867                 doc_rect_to_view_rect (view, page, &rect, &view_rect);
4868                 ensure_rectangle_is_visible (view, &view_rect);
4869         }
4870 }
4871
4872 /**
4873  * jump_to_find_page
4874  * @view: #EvView instance
4875  * @direction: Direction to look
4876  * @shift: Shift from current page
4877  *
4878  * Jumps to the first page that has occurences of searched word.
4879  * Uses a direction where to look and a shift from current page.
4880  *
4881  */
4882 static void
4883 jump_to_find_page (EvView *view, EvViewFindDirection direction, gint shift)
4884 {
4885         int n_pages, i;
4886
4887         n_pages = ev_page_cache_get_n_pages (view->page_cache);
4888
4889         for (i = 0; i < n_pages; i++) {
4890                 int has_results;
4891                 int page;
4892
4893                 if (direction == EV_VIEW_FIND_NEXT)
4894                         page = view->current_page + i;
4895                 else
4896                         page = view->current_page - i;
4897                 page += shift;
4898
4899                 if (page >= n_pages) {
4900                         page = page - n_pages;
4901                 }
4902                 if (page < 0)
4903                         page = page + n_pages;
4904
4905                 has_results = ev_document_find_page_has_results
4906                                 (EV_DOCUMENT_FIND (view->document), page);
4907                 if (has_results == -1) {
4908                         break;
4909                 } else if (has_results == 1) {
4910                         ev_page_cache_set_current_page (view->page_cache, page);
4911                         break;
4912                 }
4913         }
4914 }
4915
4916 gboolean
4917 ev_view_can_find_next (EvView *view)
4918 {
4919         if (EV_IS_DOCUMENT_FIND (view->document)) {
4920                 EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
4921                 int i, n_pages;
4922
4923                 n_pages = ev_page_cache_get_n_pages (view->page_cache);
4924                 for (i = 0; i < n_pages; i++) {
4925                         if (ev_document_find_get_n_results (find, i) > 0) {
4926                                 return TRUE;
4927                         }
4928                 }
4929         }
4930
4931         return FALSE;
4932 }
4933
4934 void
4935 ev_view_find_next (EvView *view)
4936 {
4937         int n_results, n_pages;
4938         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
4939
4940         n_results = ev_document_find_get_n_results (find, view->current_page);
4941
4942         n_pages = ev_page_cache_get_n_pages (view->page_cache);
4943
4944         view->find_result++;
4945
4946         if (view->find_result >= n_results) {
4947
4948                 view->find_result = 0;
4949                 jump_to_find_page (view, EV_VIEW_FIND_NEXT, 1);
4950                 jump_to_find_result (view);
4951         } else {
4952                 jump_to_find_result (view);
4953                 gtk_widget_queue_draw (GTK_WIDGET (view));
4954         }
4955 }
4956
4957 gboolean
4958 ev_view_can_find_previous (EvView *view)
4959 {
4960         if (EV_IS_DOCUMENT_FIND (view->document)) {
4961                 EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
4962                 int i, n_pages;
4963
4964                 n_pages = ev_page_cache_get_n_pages (view->page_cache);
4965                 for (i = n_pages - 1; i >= 0; i--) {
4966                         if (ev_document_find_get_n_results (find, i) > 0) {
4967                                 return TRUE;
4968                         }
4969                 }
4970         }
4971
4972         return FALSE;
4973 }
4974 void
4975 ev_view_find_previous (EvView *view)
4976 {
4977         int n_results, n_pages;
4978         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
4979         EvPageCache *page_cache;
4980
4981         page_cache = ev_page_cache_get (view->document);
4982
4983         n_results = ev_document_find_get_n_results (find, view->current_page);
4984
4985         n_pages = ev_page_cache_get_n_pages (page_cache);
4986
4987         view->find_result--;
4988
4989         if (view->find_result < 0) {
4990
4991                 jump_to_find_page (view, EV_VIEW_FIND_PREV, -1);
4992                 view->find_result = ev_document_find_get_n_results (find, view->current_page) - 1;
4993                 jump_to_find_result (view);
4994         } else {
4995                 jump_to_find_result (view);
4996                 gtk_widget_queue_draw (GTK_WIDGET (view));
4997         }
4998 }
4999
5000 void ev_view_search_changed (EvView *view)
5001 {
5002         /* search string has changed, focus on new search result */
5003         view->jump_to_find_result = TRUE;
5004 }
5005
5006 /*** Selections ***/
5007
5008 /* compute_new_selection_rect/text calculates the area currently selected by
5009  * view_rect.  each handles a different mode;
5010  */
5011 static GList *
5012 compute_new_selection_rect (EvView       *view,
5013                             GdkPoint     *start,
5014                             GdkPoint     *stop)
5015 {
5016         GdkRectangle view_rect;
5017         int n_pages, i;
5018         GList *list = NULL;
5019
5020         g_assert (view->selection_mode == EV_VIEW_SELECTION_RECTANGLE);
5021
5022         view_rect.x = MIN (start->x, stop->x);
5023         view_rect.y = MIN (start->y, stop->y);
5024         view_rect.width = MAX (start->x, stop->x) - view_rect.x;
5025         view_rect.width = MAX (start->y, stop->y) - view_rect.y;
5026
5027         n_pages = ev_page_cache_get_n_pages (view->page_cache);
5028
5029         for (i = 0; i < n_pages; i++) {
5030                 GdkRectangle page_area;
5031                 GtkBorder border;
5032
5033                 if (get_page_extents (view, i, &page_area, &border)) {
5034                         GdkRectangle overlap;
5035
5036                         if (gdk_rectangle_intersect (&page_area, &view_rect, &overlap)) {
5037                                 EvViewSelection *selection;
5038
5039                                 selection = g_new0 (EvViewSelection, 1);
5040                                 selection->page = i;
5041                                 view_rect_to_doc_rect (view, &overlap, &page_area,
5042                                                        &(selection->rect));
5043
5044                                 list = g_list_append (list, selection);
5045                         }
5046                 }
5047         }
5048
5049         return list;
5050 }
5051
5052 static gboolean
5053 gdk_rectangle_point_in (GdkRectangle *rectangle,
5054                         GdkPoint     *point)
5055 {
5056         return rectangle->x <= point->x &&
5057                 rectangle->y <= point->y &&
5058                 point->x < rectangle->x + rectangle->width &&
5059                 point->y < rectangle->y + rectangle->height;
5060 }
5061
5062 static GList *
5063 compute_new_selection_text (EvView   *view,
5064                             GdkPoint *start,
5065                             GdkPoint *stop)
5066 {
5067         int n_pages, i, first, last;
5068         GList *list = NULL;
5069         EvViewSelection *selection;
5070         gint width, height;
5071         int start_page, end_page;
5072
5073         g_assert (view->selection_mode == EV_VIEW_SELECTION_TEXT);
5074
5075         n_pages = ev_page_cache_get_n_pages (view->page_cache);
5076
5077         /* First figure out the range of pages the selection
5078          * affects. */
5079         first = n_pages;
5080         last = 0;
5081         if (view->continuous) {
5082                 start_page = 0;
5083                 end_page = n_pages;
5084         } else if (view->dual_page) {
5085                 start_page = view->start_page;
5086                 end_page = view->end_page + 1;
5087         } else {
5088                 start_page = view->current_page;
5089                 end_page = view->current_page + 1;
5090         }
5091
5092         for (i = start_page; i < end_page; i++) {
5093                 GdkRectangle page_area;
5094                 GtkBorder border;
5095
5096                 get_page_extents (view, i, &page_area, &border);
5097                 if (gdk_rectangle_point_in (&page_area, start) ||
5098                     gdk_rectangle_point_in (&page_area, stop)) {
5099                         if (first == n_pages)
5100                                 first = i;
5101                         last = i;
5102                 }
5103
5104         }
5105
5106         /* Now create a list of EvViewSelection's for the affected
5107          * pages.  This could be an empty list, a list of just one
5108          * page or a number of pages.*/
5109         for (i = first; i < last + 1; i++) {
5110                 GdkRectangle page_area;
5111                 GtkBorder border;
5112                 GdkPoint *point;
5113
5114                 ev_page_cache_get_size (view->page_cache, i,
5115                                         view->rotation,
5116                                         1.0, &width, &height);
5117
5118                 selection = g_new0 (EvViewSelection, 1);
5119                 selection->page = i;
5120                 selection->rect.x1 = selection->rect.y1 = 0;
5121                 selection->rect.x2 = width;
5122                 selection->rect.y2 = height;
5123
5124                 get_page_extents (view, i, &page_area, &border);
5125
5126                 if (gdk_rectangle_point_in (&page_area, start))
5127                         point = start;
5128                 else
5129                         point = stop;
5130
5131                 if (i == first)
5132                         view_point_to_doc_point (view, point, &page_area,
5133                                                  &selection->rect.x1,
5134                                                  &selection->rect.y1);
5135
5136                 /* If the selection is contained within just one page,
5137                  * make sure we don't write 'start' into both points
5138                  * in selection->rect. */
5139                 if (first == last)
5140                         point = stop;
5141
5142                 if (i == last)
5143                         view_point_to_doc_point (view, point, &page_area,
5144                                                  &selection->rect.x2,
5145                                                  &selection->rect.y2);
5146
5147                 list = g_list_append (list, selection);
5148         }
5149
5150         return list;
5151 }
5152
5153 /* This function takes the newly calculated list, and figures out which regions
5154  * have changed.  It then queues a redraw approporiately.
5155  */
5156 static void
5157 merge_selection_region (EvView *view,
5158                         GList  *new_list)
5159 {
5160         GList *old_list;
5161         GList *new_list_ptr, *old_list_ptr;
5162
5163         /* Update the selection */
5164         old_list = ev_pixbuf_cache_get_selection_list (view->pixbuf_cache);
5165         g_list_foreach (view->selection_info.selections, (GFunc)selection_free, NULL);
5166         view->selection_info.selections = new_list;
5167         ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, new_list);
5168         g_object_notify (G_OBJECT (view), "has-selection");
5169
5170         new_list_ptr = new_list;
5171         old_list_ptr = old_list;
5172
5173         while (new_list_ptr || old_list_ptr) {
5174                 EvViewSelection *old_sel, *new_sel;
5175                 int cur_page;
5176                 GdkRegion *region = NULL;
5177
5178                 new_sel = (new_list_ptr) ? (new_list_ptr->data) : NULL;
5179                 old_sel = (old_list_ptr) ? (old_list_ptr->data) : NULL;
5180
5181                 /* Assume that the lists are in order, and we run through them
5182                  * comparing them, one page at a time.  We come out with the
5183                  * first page we see. */
5184                 if (new_sel && old_sel) {
5185                         if (new_sel->page < old_sel->page) {
5186                                 new_list_ptr = new_list_ptr->next;
5187                                 old_sel = NULL;
5188                         } else if (new_sel->page > old_sel->page) {
5189                                 old_list_ptr = old_list_ptr->next;
5190                                 new_sel = NULL;
5191                         } else {
5192                                 new_list_ptr = new_list_ptr->next;
5193                                 old_list_ptr = old_list_ptr->next;
5194                         }
5195                 } else if (new_sel) {
5196                         new_list_ptr = new_list_ptr->next;
5197                 } else if (old_sel) {
5198                         old_list_ptr = old_list_ptr->next;
5199                 }
5200
5201                 g_assert (new_sel || old_sel);
5202
5203                 /* is the page we're looking at on the screen?*/
5204                 cur_page = new_sel ? new_sel->page : old_sel->page;
5205                 if (cur_page < view->start_page || cur_page > view->end_page)
5206                         continue;
5207
5208                 /* seed the cache with a new page.  We are going to need the new
5209                  * region too. */
5210                 if (new_sel) {
5211                         GdkRegion *tmp_region = NULL;
5212
5213                         ev_pixbuf_cache_get_selection_surface (view->pixbuf_cache,
5214                                                                cur_page,
5215                                                                view->scale,
5216                                                                &tmp_region);
5217
5218                         if (tmp_region) {
5219                                 new_sel->covered_region = gdk_region_copy (tmp_region);
5220                         }
5221                 }
5222
5223                 /* Now we figure out what needs redrawing */
5224                 if (old_sel && new_sel) {
5225                         if (old_sel->covered_region && new_sel->covered_region) {
5226                                 /* We only want to redraw the areas that have
5227                                  * changed, so we xor the old and new regions
5228                                  * and redraw if it's different */
5229                                 region = gdk_region_copy (old_sel->covered_region);
5230                                 gdk_region_xor (region, new_sel->covered_region);
5231                                 if (gdk_region_empty (region)) {
5232                                         gdk_region_destroy (region);
5233                                         region = NULL;
5234                                 }
5235                         } else if (old_sel->covered_region) {
5236                                 region = gdk_region_copy (old_sel->covered_region);
5237                         } else if (new_sel->covered_region) {
5238                                 region = gdk_region_copy (new_sel->covered_region);
5239                         }
5240                 } else if (old_sel && !new_sel) {
5241                         if (old_sel->covered_region && !gdk_region_empty (old_sel->covered_region)) {
5242                                 region = gdk_region_copy (old_sel->covered_region);
5243                         }
5244                 } else if (!old_sel && new_sel) {
5245                         if (new_sel->covered_region && !gdk_region_empty (new_sel->covered_region)) {
5246                                 region = gdk_region_copy (new_sel->covered_region);
5247                         }
5248                 } else {
5249                         g_assert_not_reached ();
5250                 }
5251
5252                 /* Redraw the damaged region! */
5253                 if (region) {
5254                         GdkRectangle page_area;
5255                         GtkBorder border;
5256
5257                         /* I don't know why but the region is smaller
5258                          * than expected. This hack fixes it, I guess
5259                          * 10 pixels more won't hurt
5260                          */
5261                         gdk_region_shrink (region, -5, -5);
5262
5263                         get_page_extents (view, cur_page, &page_area, &border);
5264                         gdk_region_offset (region,
5265                                            page_area.x + border.left - view->scroll_x,
5266                                            page_area.y + border.top - view->scroll_y);
5267                         gdk_window_invalidate_region (view->layout.bin_window, region, TRUE);
5268                         gdk_region_destroy (region);
5269                 }
5270         }
5271
5272         /* Free the old list, now that we're done with it. */
5273         g_list_foreach (old_list, (GFunc) selection_free, NULL);
5274 }
5275
5276 static void
5277 compute_selections (EvView   *view,
5278                     GdkPoint *start,
5279                     GdkPoint *stop)
5280 {
5281         GList *list;
5282
5283         if (view->selection_mode == EV_VIEW_SELECTION_RECTANGLE)
5284                 list = compute_new_selection_rect (view, start, stop);
5285         else
5286                 list = compute_new_selection_text (view, start, stop);
5287         merge_selection_region (view, list);
5288 }
5289
5290 /* Free's the selection.  It's up to the caller to queue redraws if needed.
5291  */
5292 static void
5293 selection_free (EvViewSelection *selection)
5294 {
5295         if (selection->covered_region)
5296                 gdk_region_destroy (selection->covered_region);
5297         g_free (selection);
5298 }
5299
5300 static void
5301 clear_selection (EvView *view)
5302 {
5303         g_list_foreach (view->selection_info.selections, (GFunc)selection_free, NULL);
5304         view->selection_info.selections = NULL;
5305         view->selection_info.in_selection = FALSE;
5306         if (view->pixbuf_cache)
5307                 ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, NULL);
5308         g_object_notify (G_OBJECT (view), "has-selection");
5309 }
5310
5311
5312 void
5313 ev_view_select_all (EvView *view)
5314 {
5315         int n_pages, i;
5316
5317         /* Disable selection on rotated pages for the 0.4.0 series */
5318         if (view->rotation != 0)
5319                 return;
5320
5321         clear_selection (view);
5322
5323         n_pages = ev_page_cache_get_n_pages (view->page_cache);
5324         for (i = 0; i < n_pages; i++) {
5325                 int width, height;
5326                 EvViewSelection *selection;
5327
5328                 ev_page_cache_get_size (view->page_cache,
5329                                         i,
5330                                         view->rotation,
5331                                         1.0, &width, &height);
5332
5333                 selection = g_new0 (EvViewSelection, 1);
5334                 selection->page = i;
5335                 selection->rect.x1 = selection->rect.y1 = 0;
5336                 selection->rect.x2 = width;
5337                 selection->rect.y2 = height;
5338
5339                 view->selection_info.selections = g_list_append (view->selection_info.selections, selection);
5340         }
5341
5342         ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, view->selection_info.selections);
5343         g_object_notify (G_OBJECT (view), "has-selection");
5344         gtk_widget_queue_draw (GTK_WIDGET (view));
5345 }
5346
5347 gboolean
5348 ev_view_get_has_selection (EvView *view)
5349 {
5350         return view->selection_info.selections != NULL;
5351 }
5352
5353 static char *
5354 get_selected_text (EvView *ev_view)
5355 {
5356         GString *text;
5357         GList *l;
5358         gchar *normalized_text;
5359
5360         text = g_string_new (NULL);
5361
5362         ev_document_doc_mutex_lock ();
5363
5364         for (l = ev_view->selection_info.selections; l != NULL; l = l->next) {
5365                 EvViewSelection *selection = (EvViewSelection *)l->data;
5366                 char *tmp;
5367
5368                 tmp = ev_document_get_text (ev_view->document,
5369                                             selection->page,
5370                                             &selection->rect);
5371                 g_string_append (text, tmp);
5372                 g_free (tmp);
5373         }
5374
5375         ev_document_doc_mutex_unlock ();
5376
5377         normalized_text = g_utf8_normalize (text->str, text->len, G_NORMALIZE_NFKC);
5378         g_string_free (text, TRUE);
5379         return normalized_text;
5380 }
5381
5382 void
5383 ev_view_copy (EvView *ev_view)
5384 {
5385         GtkClipboard *clipboard;
5386         char *text;
5387
5388         if (!ev_document_can_get_text (ev_view->document)) {
5389                 return;
5390         }
5391
5392         text = get_selected_text (ev_view);
5393         clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view),
5394                                               GDK_SELECTION_CLIPBOARD);
5395         gtk_clipboard_set_text (clipboard, text, -1);
5396         g_free (text);
5397 }
5398
5399 static void
5400 ev_view_primary_get_cb (GtkClipboard     *clipboard,
5401                         GtkSelectionData *selection_data,
5402                         guint             info,
5403                         gpointer          data)
5404 {
5405         EvView *ev_view = EV_VIEW (data);
5406         char *text;
5407
5408         if (!ev_document_can_get_text (ev_view->document)) {
5409                 return;
5410         }
5411
5412         text = get_selected_text (ev_view);
5413         if (text) {
5414                 gtk_selection_data_set_text (selection_data, text, -1);
5415                 g_free (text);
5416         }
5417 }
5418
5419 static void
5420 ev_view_primary_clear_cb (GtkClipboard *clipboard,
5421                           gpointer      data)
5422 {
5423         EvView *view = EV_VIEW (data);
5424
5425         clear_selection (view);
5426 }
5427
5428 static void
5429 ev_view_update_primary_selection (EvView *ev_view)
5430 {
5431         GtkClipboard *clipboard;
5432
5433         clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view),
5434                                               GDK_SELECTION_PRIMARY);
5435
5436         if (ev_view->selection_info.selections) {
5437                 if (!gtk_clipboard_set_with_owner (clipboard,
5438                                                    clipboard_targets,
5439                                                    G_N_ELEMENTS (clipboard_targets),
5440                                                    ev_view_primary_get_cb,
5441                                                    ev_view_primary_clear_cb,
5442                                                    G_OBJECT (ev_view)))
5443                         ev_view_primary_clear_cb (clipboard, ev_view);
5444         } else {
5445                 if (gtk_clipboard_get_owner (clipboard) == G_OBJECT (ev_view))
5446                         gtk_clipboard_clear (clipboard);
5447         }
5448 }
5449
5450 /*** Cursor operations ***/
5451
5452 static GdkCursor *
5453 ev_view_create_invisible_cursor(void)
5454 {
5455        GdkBitmap *empty;
5456        GdkColor black = { 0, 0, 0, 0 };
5457        static char bits[] = { 0x00 };
5458
5459        empty = gdk_bitmap_create_from_data (NULL, bits, 1, 1);
5460
5461        return gdk_cursor_new_from_pixmap (empty, empty, &black, &black, 0, 0);
5462 }
5463
5464 static void
5465 ev_view_set_cursor (EvView *view, EvViewCursor new_cursor)
5466 {
5467         GdkCursor *cursor = NULL;
5468         GdkDisplay *display;
5469         GtkWidget *widget;
5470
5471         if (view->cursor == new_cursor) {
5472                 return;
5473         }
5474
5475         widget = gtk_widget_get_toplevel (GTK_WIDGET (view));
5476         display = gtk_widget_get_display (widget);
5477         view->cursor = new_cursor;
5478
5479         switch (new_cursor) {
5480                 case EV_VIEW_CURSOR_NORMAL:
5481                         gdk_window_set_cursor (view->layout.bin_window, NULL);
5482                         break;
5483                 case EV_VIEW_CURSOR_IBEAM:
5484                         cursor = gdk_cursor_new_for_display (display, GDK_XTERM);
5485                         break;
5486                 case EV_VIEW_CURSOR_LINK:
5487                         cursor = gdk_cursor_new_for_display (display, GDK_HAND2);
5488                         break;
5489                 case EV_VIEW_CURSOR_WAIT:
5490                         cursor = gdk_cursor_new_for_display (display, GDK_WATCH);
5491                         break;
5492                 case EV_VIEW_CURSOR_HIDDEN:
5493                         cursor = ev_view_create_invisible_cursor ();
5494                         break;
5495                 case EV_VIEW_CURSOR_DRAG:
5496                         cursor = gdk_cursor_new_for_display (display, GDK_FLEUR);
5497                         break;
5498         }
5499
5500         if (cursor) {
5501                 gdk_window_set_cursor (view->layout.bin_window, cursor);
5502                 gdk_cursor_unref (cursor);
5503                 gdk_flush();
5504         }
5505 }
5506
5507 void
5508 ev_view_hide_cursor (EvView *view)
5509 {
5510        ev_view_set_cursor (view, EV_VIEW_CURSOR_HIDDEN);
5511 }
5512
5513 void
5514 ev_view_show_cursor (EvView *view)
5515 {
5516        ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
5517 }
5518
5519 static void
5520 ev_view_reset_presentation_state (EvView *view)
5521 {
5522         if (!view->presentation ||
5523             view->presentation_state == EV_PRESENTATION_NORMAL)
5524                 return;
5525
5526         view->presentation_state = EV_PRESENTATION_NORMAL;
5527         gdk_window_set_background (view->layout.bin_window,
5528                                    &GTK_WIDGET (view)->style->black);
5529         gtk_widget_queue_draw (GTK_WIDGET (view));
5530 }
5531
5532 gboolean
5533 ev_view_next_page (EvView *view)
5534 {
5535         int page, n_pages;
5536
5537         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
5538
5539         if (!view->page_cache)
5540                 return FALSE;
5541
5542         if (view->presentation &&
5543             (view->presentation_state == EV_PRESENTATION_BLACK ||
5544              view->presentation_state == EV_PRESENTATION_WHITE)) {
5545                 ev_view_reset_presentation_state (view);
5546                 return FALSE;
5547         }
5548
5549         ev_view_presentation_transition_stop (view);
5550         ev_view_reset_presentation_state (view);
5551
5552         page = ev_page_cache_get_current_page (view->page_cache);
5553         n_pages = ev_page_cache_get_n_pages (view->page_cache);
5554
5555         if (view->dual_page && !view->presentation)
5556                 page = page + 2;
5557         else
5558                 page = page + 1;
5559
5560         if (page < n_pages) {
5561                 ev_page_cache_set_current_page (view->page_cache, page);
5562                 return TRUE;
5563         } else if (view->presentation && page == n_pages) {
5564                 view->presentation_state = EV_PRESENTATION_END;
5565                 gtk_widget_queue_draw (GTK_WIDGET (view));
5566                 return TRUE;
5567         } else if (view->dual_page && page == n_pages) {
5568                 ev_page_cache_set_current_page (view->page_cache, page - 1);
5569                 return TRUE;
5570         } else {
5571                 return FALSE;
5572         }
5573 }
5574
5575 gboolean
5576 ev_view_previous_page (EvView *view)
5577 {
5578         int page;
5579
5580         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
5581
5582         if (!view->page_cache)
5583                 return FALSE;
5584
5585         if (view->presentation &&
5586             view->presentation_state == EV_PRESENTATION_END) {
5587                 ev_view_reset_presentation_state (view);
5588                 return TRUE;
5589         }
5590
5591         if (view->presentation &&
5592             (view->presentation_state == EV_PRESENTATION_BLACK ||
5593              view->presentation_state == EV_PRESENTATION_WHITE)) {
5594                 ev_view_reset_presentation_state (view);
5595                 return FALSE;
5596         }
5597
5598         ev_view_reset_presentation_state (view);
5599
5600         page = ev_page_cache_get_current_page (view->page_cache);
5601
5602         if (view->dual_page && !view->presentation)
5603                 page = page - 2;
5604         else
5605                 page = page - 1;
5606
5607         if (page >= 0) {
5608                 ev_page_cache_set_current_page (view->page_cache, page);
5609                 return TRUE;
5610         } else if (ev_view_get_dual_page (view) && page == -1) {
5611                 ev_page_cache_set_current_page (view->page_cache, 0);
5612                 return TRUE;
5613         } else {
5614                 return FALSE;
5615         }
5616 }
5617
5618 /*** Enum description for usage in signal ***/
5619
5620 GType
5621 ev_sizing_mode_get_type (void)
5622 {
5623   static GType etype = 0;
5624   if (etype == 0) {
5625     static const GEnumValue values[] = {
5626       { EV_SIZING_FIT_WIDTH, "EV_SIZING_FIT_WIDTH", "fit-width" },
5627       { EV_SIZING_BEST_FIT, "EV_SIZING_BEST_FIT", "best-fit" },
5628       { EV_SIZING_FREE, "EV_SIZING_FREE", "free" },
5629       { 0, NULL, NULL }
5630     };
5631     etype = g_enum_register_static ("EvSizingMode", values);
5632   }
5633   return etype;
5634 }
5635
5636 GType
5637 ev_scroll_type_get_type (void)
5638 {
5639   static GType etype = 0;
5640   if (etype == 0) {
5641     static const GEnumValue values[] = {
5642       { EV_SCROLL_PAGE_FORWARD, "EV_SCROLL_PAGE_FORWARD", "scroll-page-forward" },
5643       { EV_SCROLL_PAGE_BACKWARD, "EV_SCROLL_PAGE_BACKWARD", "scroll-page-backward" },
5644       { EV_SCROLL_STEP_FORWARD, "EV_SCROLL_STEP_FORWARD", "scroll-step-forward" },
5645       { EV_SCROLL_STEP_FORWARD, "EV_SCROLL_STEP_FORWARD", "scroll-step-forward" },
5646       { EV_SCROLL_STEP_UP, "EV_SCROLL_STEP_UP", "scroll-step-up" },
5647       { EV_SCROLL_STEP_DOWN, "EV_SCROLL_STEP_DOWN", "scroll-step-down" },
5648       { 0, NULL, NULL }
5649     };
5650     etype = g_enum_register_static ("EvScrollType", values);
5651   }
5652   return etype;
5653 }
5654
5655 void
5656 ev_view_update_view_size (EvView *view, GtkScrolledWindow * scrolled_window)
5657 {
5658         int width, height;
5659         GtkRequisition vsb_requisition;
5660         GtkRequisition hsb_requisition;
5661         int scrollbar_spacing;
5662
5663         /* Calculate the width available for the content */
5664         width  = GTK_WIDGET (scrolled_window)->allocation.width;
5665         height = GTK_WIDGET (scrolled_window)->allocation.height;
5666
5667         if (gtk_scrolled_window_get_shadow_type (scrolled_window) == GTK_SHADOW_IN
5668             && view) {
5669                 width -=  2 * GTK_WIDGET(view)->style->xthickness;
5670                 height -= 2 * GTK_WIDGET(view)->style->ythickness;
5671         }
5672
5673         gtk_widget_size_request (scrolled_window->vscrollbar, &vsb_requisition);
5674         gtk_widget_size_request (scrolled_window->hscrollbar, &hsb_requisition);
5675         gtk_widget_style_get (GTK_WIDGET (scrolled_window),
5676                               "scrollbar_spacing",
5677                               &scrollbar_spacing,
5678                               NULL);
5679
5680         if (EV_IS_VIEW(view)) {
5681                 ev_view_set_zoom_for_size (EV_VIEW (view),
5682                                            MAX (1, width),
5683                                            MAX (1, height),
5684                                            vsb_requisition.width + scrollbar_spacing,
5685                                            hsb_requisition.height + scrollbar_spacing);
5686         }
5687 }