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