shell/ev-view.c

   1 /* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8; c-indent-level: 8 -*- */
   2 /* this file is part of evince, a gnome document viewer
   3  *
   4  *  Copyright (C) 2004 Red Hat, Inc
   5  *
   6  * Evince is free software; you can redistribute it and/or modify it
   7  * under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * Evince is distributed in the hope that it will be useful, but
  12  * WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
  19  */
  20
  21 #include <stdlib.h>
  22 #include <math.h>
  23 #include <string.h>
  24 #include <gtk/gtkalignment.h>
  25 #include <glib/gi18n.h>
  26 #include <gtk/gtkbindings.h>
  27 #include <gtk/gtkselection.h>
  28 #include <gtk/gtkclipboard.h>
  29 #include <gdk/gdkkeysyms.h>
  30
  31 #include "ev-marshal.h"
  32 #include "ev-view.h"
  33 #include "ev-view-private.h"
  34 #include "ev-utils.h"
  35 #include "ev-document-links.h"
  36 #include "ev-document-images.h"
  37 #include "ev-document-find.h"
  38 #include "ev-document-transition.h"
  39 #include "ev-document-forms.h"
  40 #include "ev-document-misc.h"
  41 #include "ev-job-queue.h"
  42 #include "ev-page-cache.h"
  43 #include "ev-pixbuf-cache.h"
  44 #if !GTK_CHECK_VERSION (2, 11, 7)
  45 #include "ev-tooltip.h"
  46 #endif
  47 #include "ev-application.h"
  48
  49 #define EV_VIEW_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass), EV_TYPE_VIEW, EvViewClass))
  50 #define EV_IS_VIEW_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), EV_TYPE_VIEW))
  51 #define EV_VIEW_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj), EV_TYPE_VIEW, EvViewClass))
  52
  53
  54 enum {
  55         PROP_0,
  56         PROP_FIND_STATUS,
  57         PROP_CONTINUOUS,
  58         PROP_DUAL_PAGE,
  59         PROP_FULLSCREEN,
  60         PROP_PRESENTATION,
  61         PROP_SIZING_MODE,
  62         PROP_ZOOM,
  63         PROP_ROTATION,
  64         PROP_HAS_SELECTION,
  65 };
  66
  67 enum {
  68         SIGNAL_BINDING_ACTIVATED,
  69         SIGNAL_ZOOM_INVALID,
  70         SIGNAL_HANDLE_LINK,
  71         SIGNAL_EXTERNAL_LINK,
  72         SIGNAL_POPUP_MENU,
  73         N_SIGNALS,
  74 };
  75
  76 enum {
  77         TARGET_DND_URI,
  78         TARGET_DND_TEXT,
  79         TARGET_DND_IMAGE
  80 };
  81
  82 enum {
  83         TARGET_STRING,
  84         TARGET_TEXT,
  85         TARGET_COMPOUND_TEXT,
  86         TARGET_UTF8_STRING,
  87         TARGET_TEXT_BUFFER_CONTENTS
  88 };
  89
  90 static const GtkTargetEntry clipboard_targets[] = {
  91         { "STRING", 0, TARGET_STRING },
  92         { "TEXT",   0, TARGET_TEXT },
  93         { "COMPOUND_TEXT", 0, TARGET_COMPOUND_TEXT },
  94         { "UTF8_STRING", 0, TARGET_UTF8_STRING },
  95 };
  96
  97 static const GtkTargetEntry view_drop_targets[] = {
  98         { "text/uri-list", 0, 0 }
  99 };
 100
 101 static guint signals[N_SIGNALS];
 102
 103 typedef enum {
 104         EV_VIEW_FIND_NEXT,
 105         EV_VIEW_FIND_PREV
 106 } EvViewFindDirection;
 107
 108 #define ZOOM_IN_FACTOR  1.2
 109 #define ZOOM_OUT_FACTOR (1.0/ZOOM_IN_FACTOR)
 110
 111 #define MIN_SCALE 0.05409
 112 #define MAX_SCALE 4.0
 113
 114 #define SCROLL_TIME 150
 115
 116 /*** Scrolling ***/
 117 static void       scroll_to_current_page                     (EvView *view,
 118                                                               GtkOrientation orientation);
 119 static void       ev_view_set_scroll_adjustments             (GtkLayout          *layout,
 120                                                               GtkAdjustment      *hadjustment,
 121                                                               GtkAdjustment      *vadjustment);
 122 static void       view_update_range_and_current_page         (EvView             *view);
 123 static void       set_scroll_adjustment                      (EvView             *view,
 124                                                               GtkOrientation      orientation,
 125                                                               GtkAdjustment      *adjustment);
 126 static void       add_scroll_binding_keypad                  (GtkBindingSet      *binding_set,
 127                                                               guint               keyval,
 128                                                               GdkModifierType modifiers,
 129                                                               EvScrollType       scroll,
 130                                                               gboolean            horizontal);
 131 static void       ensure_rectangle_is_visible                (EvView             *view,
 132                                                               GdkRectangle       *rect);
 133
 134 /*** Geometry computations ***/
 135 static void       compute_border                             (EvView             *view,
 136                                                               int                 width,
 137                                                               int                 height,
 138                                                               GtkBorder          *border);
 139 static void       get_page_y_offset                          (EvView *view,
 140                                                               int page,
 141                                                               double zoom,
 142                                                               int *y_offset);
 143 static gboolean   get_page_extents                           (EvView             *view,
 144                                                               gint                page,
 145                                                               GdkRectangle       *page_area,
 146                                                               GtkBorder          *border);
 147 static void       view_rect_to_doc_rect                      (EvView             *view,
 148                                                               GdkRectangle       *view_rect,
 149                                                               GdkRectangle       *page_area,
 150                                                               EvRectangle        *doc_rect);
 151 static void       doc_rect_to_view_rect                      (EvView             *view,
 152                                                               int                 page,
 153                                                               EvRectangle        *doc_rect,
 154                                                               GdkRectangle       *view_rect);
 155 static void       find_page_at_location                      (EvView             *view,
 156                                                               gdouble             x,
 157                                                               gdouble             y,
 158                                                               gint               *page,
 159                                                               gint               *x_offset,
 160                                                               gint               *y_offset);
 161 static gboolean  doc_point_to_view_point                     (EvView             *view,
 162                                                               int                 page,
 163                                                               EvPoint            *doc_point,
 164                                                               GdkPoint           *view_point);
 165 /*** Hyperrefs ***/
 166 static EvLink *   ev_view_get_link_at_location               (EvView             *view,
 167                                                               gdouble             x,
 168                                                               gdouble             y);
 169 static char*      tip_from_link                              (EvView             *view,
 170                                                               EvLink             *link);
 171 /*** Forms ***/
 172 static EvFormField *ev_view_get_form_field_at_location       (EvView             *view,
 173                                                                gdouble            x,
 174                                                                gdouble            y);
 175
 176 /*** GtkWidget implementation ***/
 177 static void       ev_view_size_request_continuous_dual_page  (EvView             *view,
 178                                                               GtkRequisition     *requisition);
 179 static void       ev_view_size_request_continuous            (EvView             *view,
 180                                                               GtkRequisition     *requisition);
 181 static void       ev_view_size_request_dual_page             (EvView             *view,
 182                                                               GtkRequisition     *requisition);
 183 static void       ev_view_size_request_single_page           (EvView             *view,
 184                                                               GtkRequisition     *requisition);
 185 static void       ev_view_size_request                       (GtkWidget          *widget,
 186                                                               GtkRequisition     *requisition);
 187 static void       ev_view_size_allocate                      (GtkWidget          *widget,
 188                                                               GtkAllocation      *allocation);
 189 static void       ev_view_realize                            (GtkWidget          *widget);
 190 static gboolean   ev_view_scroll_event                       (GtkWidget          *widget,
 191                                                               GdkEventScroll     *event);
 192 static gboolean   ev_view_expose_event                       (GtkWidget          *widget,
 193                                                               GdkEventExpose     *event);
 194 static gboolean   ev_view_popup_menu                         (GtkWidget          *widget);
 195 static gboolean   ev_view_button_press_event                 (GtkWidget          *widget,
 196                                                               GdkEventButton     *event);
 197 static gboolean   ev_view_motion_notify_event                (GtkWidget          *widget,
 198                                                               GdkEventMotion     *event);
 199 static gboolean   ev_view_button_release_event               (GtkWidget          *widget,
 200                                                               GdkEventButton     *event);
 201 static gboolean   ev_view_enter_notify_event                 (GtkWidget          *widget,
 202                                                               GdkEventCrossing   *event);
 203 static gboolean   ev_view_leave_notify_event                 (GtkWidget          *widget,
 204                                                               GdkEventCrossing   *event);
 205 static void       ev_view_style_set                          (GtkWidget          *widget,
 206                                                               GtkStyle           *old_style);
 207 static void       ev_view_remove_all                         (EvView             *view);
 208
 209 static AtkObject *ev_view_get_accessible                     (GtkWidget *widget);
 210
 211 /*** Drawing ***/
 212 static guint32    ev_gdk_color_to_rgb                        (const GdkColor     *color);
 213 static void       draw_rubberband                            (GtkWidget          *widget,
 214                                                               GdkWindow          *window,
 215                                                               const GdkRectangle *rect,
 216                                                               guchar              alpha);
 217 static void       highlight_find_results                     (EvView             *view,
 218                                                               int                 page);
 219 static void       draw_one_page                              (EvView             *view,
 220                                                               gint                page,
 221                                                               cairo_t            *cr,
 222                                                               GdkRectangle       *page_area,
 223                                                               GtkBorder          *border,
 224                                                               GdkRectangle       *expose_area,
 225                                                               gboolean           *page_ready);
 226 static void       draw_loading_text                          (EvView             *view,
 227                                                               GdkRectangle       *page_area,
 228                                                               GdkRectangle       *expose_area);
 229
 230 /*** Callbacks ***/
 231 static void       find_changed_cb                            (EvDocument         *document,
 232                                                               int                 page,
 233                                                               EvView             *view);
 234 static void       job_finished_cb                            (EvPixbufCache      *pixbuf_cache,
 235                                                               GdkRegion          *region,
 236                                                               EvView             *view);
 237 static void       page_changed_cb                            (EvPageCache        *page_cache,
 238                                                               int                 new_page,
 239                                                               EvView             *view);
 240 static void       on_adjustment_value_changed                (GtkAdjustment      *adjustment,
 241                                                               EvView             *view);
 242
 243 /*** GObject ***/
 244 static void       ev_view_finalize                           (GObject            *object);
 245 static void       ev_view_destroy                            (GtkObject          *object);
 246 static void       ev_view_set_property                       (GObject            *object,
 247                                                               guint               prop_id,
 248                                                               const GValue       *value,
 249                                                               GParamSpec         *pspec);
 250 static void       ev_view_get_property                       (GObject            *object,
 251                                                               guint               prop_id,
 252                                                               GValue             *value,
 253                                                               GParamSpec         *pspec);
 254 static void       ev_view_class_init                         (EvViewClass        *class);
 255 static void       ev_view_init                               (EvView             *view);
 256
 257 /*** Zoom and sizing ***/
 258 static double   zoom_for_size_fit_width                      (int doc_width,
 259                                                               int doc_height,
 260                                                               int target_width,
 261                                                               int target_height,
 262                                                               int vsb_width);
 263 static double   zoom_for_size_fit_height                     (int doc_width,
 264                                                               int doc_height,
 265                                                               int target_width,
 266                                                               int target_height,
 267                                                               int vsb_height);
 268 static double   zoom_for_size_best_fit                       (int doc_width,
 269                                                               int doc_height,
 270                                                               int target_width,
 271                                                               int target_height,
 272                                                               int vsb_width,
 273                                                               int hsb_width);
 274 static void     ev_view_zoom_for_size_presentation           (EvView *view,
 275                                                               int     width,
 276                                                               int     height);
 277 static void     ev_view_zoom_for_size_continuous_and_dual_page (EvView *view,
 278                                                                 int     width,
 279                                                                 int     height,
 280                                                                 int     vsb_width,
 281                                                                 int     hsb_height);
 282 static void     ev_view_zoom_for_size_continuous               (EvView *view,
 283                                                                 int     width,
 284                                                                 int     height,
 285                                                                 int     vsb_width,
 286                                                                 int     hsb_height);
 287 static void     ev_view_zoom_for_size_dual_page                (EvView *view,
 288                                                                 int     width,
 289                                                                 int     height,
 290                                                                 int     vsb_width,
 291                                                                 int     hsb_height);
 292 static void     ev_view_zoom_for_size_single_page              (EvView *view,
 293                                                                 int     width,
 294                                                                 int     height,
 295                                                                 int     vsb_width,
 296                                                                 int     hsb_height);
 297 /*** Cursors ***/
 298 static GdkCursor* ev_view_create_invisible_cursor            (void);
 299 static void       ev_view_set_cursor                         (EvView             *view,
 300                                                               EvViewCursor        new_cursor);
 301 static void       ev_view_handle_cursor_over_xy              (EvView *view,
 302                                                               gint x,
 303                                                               gint y);
 304
 305 /*** Find ***/
 306 static void       update_find_status_message                 (EvView             *view,
 307                                                               gboolean            this_page);
 308 static void       ev_view_set_find_status                    (EvView             *view,
 309                                                               const char         *message);
 310 static void       jump_to_find_result                        (EvView             *view);
 311 static void       jump_to_find_page                          (EvView             *view,
 312                                                               EvViewFindDirection direction,
 313                                                               gint                shift);
 314
 315 /*** Selection ***/
 316 static void       compute_selections                         (EvView             *view,
 317                                                               EvSelectionStyle    style,
 318                                                               GdkPoint           *start,
 319                                                               GdkPoint           *stop);
 320 static void       clear_selection                            (EvView             *view);
 321 static void       selection_free                             (EvViewSelection    *selection);
 322 static char*      get_selected_text                          (EvView             *ev_view);
 323 static void       ev_view_primary_get_cb                     (GtkClipboard       *clipboard,
 324                                                               GtkSelectionData   *selection_data,
 325                                                               guint               info,
 326                                                               gpointer            data);
 327 static void       ev_view_primary_clear_cb                   (GtkClipboard       *clipboard,
 328                                                               gpointer            data);
 329 static void       ev_view_update_primary_selection           (EvView             *ev_view);
 330
 331 /*** Presentation ***/
 332 static void       ev_view_presentation_transition_start      (EvView             *ev_view);
 333 static void       ev_view_presentation_transition_stop       (EvView             *ev_view);
 334
 335
 336 G_DEFINE_TYPE (EvView, ev_view, GTK_TYPE_LAYOUT)
 337
 338 static void
 339 scroll_to_current_page (EvView *view, GtkOrientation orientation)
 340 {
 341         GdkPoint view_point;
 342
 343         if (view->document == NULL) {
 344                 return;
 345         }
 346
 347         doc_point_to_view_point (view, view->current_page, &view->pending_point, &view_point);
 348
 349         if (orientation == GTK_ORIENTATION_VERTICAL) {
 350                 view->pending_point.y = 0;
 351         } else {
 352                 view->pending_point.x = 0;
 353         }
 354
 355         if (orientation == GTK_ORIENTATION_VERTICAL) {
 356                 if (view->continuous) {
 357                         gtk_adjustment_clamp_page (view->vadjustment,
 358                                                    view_point.y - view->spacing / 2,
 359                                                    view_point.y + view->vadjustment->page_size);
 360                 } else {
 361                         gtk_adjustment_set_value (view->vadjustment,
 362                                                   CLAMP (view_point.y,
 363                                                   view->vadjustment->lower,
 364                                                   view->vadjustment->upper -
 365                                                   view->vadjustment->page_size));
 366                 }
 367         } else {
 368                 if (view->dual_page) {
 369                         gtk_adjustment_clamp_page (view->hadjustment,
 370                                                    view_point.x,
 371                                                    view_point.x + view->hadjustment->page_size);
 372                 } else {
 373                         gtk_adjustment_set_value (view->hadjustment,
 374                                                   CLAMP (view_point.x,
 375                                                   view->hadjustment->lower,
 376                                                   view->hadjustment->upper -
 377                                                   view->hadjustment->page_size));
 378                 }
 379         }
 380 }
 381
 382 static void
 383 view_set_adjustment_values (EvView         *view,
 384                             GtkOrientation  orientation)
 385 {
 386         GtkWidget *widget = GTK_WIDGET (view);
 387         GtkAdjustment *adjustment;
 388         int requisition;
 389         int allocation;
 390
 391         double factor;
 392         gint new_value;
 393
 394         if (orientation == GTK_ORIENTATION_HORIZONTAL)  {
 395                 requisition = widget->requisition.width;
 396                 allocation = widget->allocation.width;
 397                 adjustment = view->hadjustment;
 398         } else {
 399                 requisition = widget->requisition.height;
 400                 allocation = widget->allocation.height;
 401                 adjustment = view->vadjustment;
 402         }
 403
 404         if (!adjustment)
 405                 return;
 406
 407         factor = 1.0;
 408         switch (view->pending_scroll) {
 409                 case SCROLL_TO_KEEP_POSITION:
 410                 case SCROLL_TO_FIND_LOCATION:
 411                         factor = (adjustment->value) / adjustment->upper;
 412                         break;
 413                 case SCROLL_TO_PAGE_POSITION:
 414                         break;
 415                 case SCROLL_TO_CENTER:
 416                         factor = (adjustment->value + adjustment->page_size * 0.5) / adjustment->upper;
 417                         break;
 418         }
 419
 420         adjustment->page_size = allocation;
 421         adjustment->step_increment = allocation * 0.1;
 422         adjustment->page_increment = allocation * 0.9;
 423         adjustment->lower = 0;
 424         adjustment->upper = MAX (allocation, requisition);
 425
 426         /*
 427          * We add 0.5 to the values before to average out our rounding errors.
 428          */
 429         switch (view->pending_scroll) {
 430                 case SCROLL_TO_KEEP_POSITION:
 431                 case SCROLL_TO_FIND_LOCATION:
 432                         new_value = CLAMP (adjustment->upper * factor + 0.5, 0, adjustment->upper - adjustment->page_size);
 433                         gtk_adjustment_set_value (adjustment, (int)new_value);
 434                         break;
 435                 case SCROLL_TO_PAGE_POSITION:
 436                         scroll_to_current_page (view, orientation);
 437                         break;
 438                 case SCROLL_TO_CENTER:
 439                         new_value = CLAMP (adjustment->upper * factor - adjustment->page_size * 0.5 + 0.5,
 440                                            0, adjustment->upper - adjustment->page_size);
 441                         gtk_adjustment_set_value (adjustment, (int)new_value);
 442                         break;
 443         }
 444
 445         gtk_adjustment_changed (adjustment);
 446 }
 447
 448 static void
 449 view_update_range_and_current_page (EvView *view)
 450 {
 451         gint current_page;
 452         gint best_current_page = -1;
 453
 454         /* Presentation trumps all other modes */
 455         if (view->presentation) {
 456                 view->start_page = view->current_page;
 457                 view->end_page = view->current_page;
 458         } else if (view->continuous) {
 459                 GdkRectangle current_area, unused, page_area;
 460                 GtkBorder border;
 461                 gboolean found = FALSE;
 462                 gint area_max = -1, area;
 463                 int i;
 464
 465                 if (!(view->vadjustment && view->hadjustment))
 466                         return;
 467
 468                 current_area.x = view->hadjustment->value;
 469                 current_area.width = view->hadjustment->upper;
 470                 current_area.y = view->vadjustment->value;
 471                 current_area.height = view->vadjustment->page_size;
 472
 473                 for (i = 0; i < ev_page_cache_get_n_pages (view->page_cache); i++) {
 474
 475                         get_page_extents (view, i, &page_area, &border);
 476
 477                         if (gdk_rectangle_intersect (&current_area, &page_area, &unused)) {
 478                                 area = unused.width * unused.height;
 479
 480                                 if (!found) {
 481                                         area_max = area;
 482                                         view->start_page = i;
 483                                         found = TRUE;
 484                                         best_current_page = i;
 485                                 }
 486                                 if (area > area_max) {
 487                                         best_current_page = (area == area_max) ? MIN (i, best_current_page) : i;
 488                                         area_max = area;
 489                                 }
 490
 491                                 view->end_page = i;
 492                         } else if (found && view->current_page <= view->end_page) {
 493                                 break;
 494                         }
 495                 }
 496
 497         } else if (view->dual_page) {
 498                 if (view->current_page % 2 == ev_page_cache_get_dual_even_left (view->page_cache)) {
 499                         view->start_page = view->current_page;
 500                         if (view->current_page + 1 < ev_page_cache_get_n_pages (view->page_cache))
 501                                 view->end_page = view->start_page + 1;
 502                         else
 503                                 view->end_page = view->start_page;
 504                 } else {
 505                         if (view->current_page < 1)
 506                                 view->start_page = view->current_page;
 507                         else
 508                                 view->start_page = view->current_page - 1;
 509                         view->end_page = view->current_page;
 510                 }
 511         } else {
 512                 view->start_page = view->current_page;
 513                 view->end_page = view->current_page;
 514         }
 515
 516         best_current_page = MAX (best_current_page, view->start_page);
 517         current_page = ev_page_cache_get_current_page (view->page_cache);
 518
 519         if ((current_page != best_current_page) && (view->pending_scroll == SCROLL_TO_KEEP_POSITION)) {
 520                 view->current_page = best_current_page;
 521                 ev_page_cache_set_current_page (view->page_cache, best_current_page);
 522         }
 523
 524         ev_pixbuf_cache_set_page_range (view->pixbuf_cache,
 525                                         view->start_page,
 526                                         view->end_page,
 527                                         view->rotation,
 528                                         view->scale,
 529                                         view->selection_info.selections);
 530 }
 531
 532 static void
 533 set_scroll_adjustment (EvView *view,
 534                        GtkOrientation  orientation,
 535                        GtkAdjustment  *adjustment)
 536 {
 537         GtkAdjustment **to_set;
 538
 539         if (orientation == GTK_ORIENTATION_HORIZONTAL)
 540                 to_set = &view->hadjustment;
 541         else
 542                 to_set = &view->vadjustment;
 543
 544         if (*to_set != adjustment) {
 545                 if (*to_set) {
 546                         g_signal_handlers_disconnect_by_func (*to_set,
 547                                                               (gpointer) on_adjustment_value_changed,
 548                                                               view);
 549                         g_object_unref (*to_set);
 550                 }
 551
 552                 *to_set = adjustment;
 553                 view_set_adjustment_values (view, orientation);
 554
 555                 if (*to_set) {
 556                         g_object_ref (*to_set);
 557                         g_signal_connect (*to_set, "value_changed",
 558                                           G_CALLBACK (on_adjustment_value_changed), view);
 559                 }
 560         }
 561 }
 562
 563 static void
 564 ev_view_set_scroll_adjustments (GtkLayout      *layout,
 565                                 GtkAdjustment  *hadjustment,
 566                                 GtkAdjustment  *vadjustment)
 567 {
 568         EvView *view = EV_VIEW (layout);
 569
 570         set_scroll_adjustment (view, GTK_ORIENTATION_HORIZONTAL, hadjustment);
 571         set_scroll_adjustment (view, GTK_ORIENTATION_VERTICAL, vadjustment);
 572
 573         on_adjustment_value_changed (NULL, view);
 574 }
 575
 576 static void
 577 add_scroll_binding_keypad (GtkBindingSet  *binding_set,
 578                            guint           keyval,
 579                            GdkModifierType modifiers,
 580                            EvScrollType    scroll,
 581                            gboolean        horizontal)
 582 {
 583   guint keypad_keyval = keyval - GDK_Left + GDK_KP_Left;
 584
 585   gtk_binding_entry_add_signal (binding_set, keyval, modifiers,
 586                                 "binding_activated", 2,
 587                                 EV_TYPE_SCROLL_TYPE, scroll,
 588                                 G_TYPE_BOOLEAN, horizontal);
 589   gtk_binding_entry_add_signal (binding_set, keypad_keyval, modifiers,
 590                                 "binding_activated", 2,
 591                                 EV_TYPE_SCROLL_TYPE, scroll,
 592                                 G_TYPE_BOOLEAN, horizontal);
 593 }
 594
 595 void
 596 ev_view_scroll (EvView        *view,
 597                 EvScrollType   scroll,
 598                 gboolean horizontal)
 599 {
 600         GtkAdjustment *adjustment;
 601         double value, increment;
 602         gboolean first_page = FALSE;
 603         gboolean last_page = FALSE;
 604
 605         view->jump_to_find_result = FALSE;
 606
 607         if (view->presentation || view->sizing_mode == EV_SIZING_BEST_FIT) {
 608                 switch (scroll) {
 609                         case EV_SCROLL_PAGE_BACKWARD:
 610                         case EV_SCROLL_STEP_BACKWARD:
 611                                 ev_view_previous_page (view);
 612                                 break;
 613                         case EV_SCROLL_PAGE_FORWARD:
 614                         case EV_SCROLL_STEP_FORWARD:
 615                                 ev_view_next_page (view);
 616                                 break;
 617                         default:
 618                                 break;
 619                 }
 620                 return;
 621         }
 622
 623         /* Assign values for increment and vertical adjustment */
 624         adjustment = horizontal ? view->hadjustment : view->vadjustment;
 625         increment = adjustment->page_size * 0.75;
 626         value = adjustment->value;
 627
 628         /* Assign boolean for first and last page */
 629         if (view->current_page == 0)
 630                 first_page = TRUE;
 631         if (view->current_page == ev_page_cache_get_n_pages (view->page_cache) - 1)
 632                 last_page = TRUE;
 633
 634         switch (scroll) {
 635                 case EV_SCROLL_PAGE_BACKWARD:
 636                         /* Do not jump backwards if at the first page */
 637                         if (value == (adjustment->lower) && first_page) {
 638                                 /* Do nothing */
 639                                 /* At the top of a page, assign the upper bound limit of previous page */
 640                         } else if (value == (adjustment->lower)) {
 641                                 value = adjustment->upper - adjustment->page_size;
 642                                 ev_view_previous_page (view);
 643                                 /* Jump to the top */
 644                         } else {
 645                                 value = MAX (value - increment, adjustment->lower);
 646                         }
 647                         break;
 648                 case EV_SCROLL_PAGE_FORWARD:
 649                         /* Do not jump forward if at the last page */
 650                         if (value == (adjustment->upper - adjustment->page_size) && last_page) {
 651                                 /* Do nothing */
 652                         /* At the bottom of a page, assign the lower bound limit of next page */
 653                         } else if (value == (adjustment->upper - adjustment->page_size)) {
 654                                 value = 0;
 655                                 ev_view_next_page (view);
 656                         /* Jump to the bottom */
 657                         } else {
 658                                 value = MIN (value + increment, adjustment->upper - adjustment->page_size);
 659                         }
 660                         break;
 661                 case EV_SCROLL_STEP_BACKWARD:
 662                         value -= adjustment->step_increment;
 663                         break;
 664                 case EV_SCROLL_STEP_FORWARD:
 665                         value += adjustment->step_increment;
 666                         break;
 667                 case EV_SCROLL_STEP_DOWN:
 668                         value -= adjustment->step_increment / 10;
 669                         break;
 670                 case EV_SCROLL_STEP_UP:
 671                         value += adjustment->step_increment / 10;
 672                         break;
 673                 default:
 674                         break;
 675         }
 676
 677         value = CLAMP (value, adjustment->lower,
 678                        adjustment->upper - adjustment->page_size);
 679
 680         gtk_adjustment_set_value (adjustment, value);
 681 }
 682
 683 #define MARGIN 5
 684
 685 static void
 686 ensure_rectangle_is_visible (EvView *view, GdkRectangle *rect)
 687 {
 688         GtkWidget *widget = GTK_WIDGET (view);
 689         GtkAdjustment *adjustment;
 690         int value;
 691
 692         view->pending_scroll = SCROLL_TO_FIND_LOCATION;
 693
 694         adjustment = view->vadjustment;
 695
 696         if (rect->y < adjustment->value) {
 697                 value = MAX (adjustment->lower, rect->y - MARGIN);
 698                 gtk_adjustment_set_value (view->vadjustment, value);
 699         } else if (rect->y + rect->height >
 700                    adjustment->value + widget->allocation.height) {
 701                 value = MIN (adjustment->upper, rect->y + rect->height -
 702                              widget->allocation.height + MARGIN);
 703                 gtk_adjustment_set_value (view->vadjustment, value);
 704         }
 705
 706         adjustment = view->hadjustment;
 707
 708         if (rect->x < adjustment->value) {
 709                 value = MAX (adjustment->lower, rect->x - MARGIN);
 710                 gtk_adjustment_set_value (view->hadjustment, value);
 711         } else if (rect->x + rect->height >
 712                    adjustment->value + widget->allocation.width) {
 713                 value = MIN (adjustment->upper, rect->x + rect->width -
 714                              widget->allocation.width + MARGIN);
 715                 gtk_adjustment_set_value (view->hadjustment, value);
 716         }
 717
 718         gtk_widget_queue_resize (GTK_WIDGET (view));
 719 }
 720
 721 /*** Geometry computations ***/
 722
 723 static void
 724 compute_border (EvView *view, int width, int height, GtkBorder *border)
 725 {
 726         if (view->presentation) {
 727                 border->left = 0;
 728                 border->right = 0;
 729                 border->top = 0;
 730                 border->bottom = 0;
 731         } else {
 732                 ev_document_misc_get_page_border_size (width, height, border);
 733         }
 734 }
 735
 736 static void
 737 get_page_y_offset (EvView *view, int page, double zoom, int *y_offset)
 738 {
 739         int max_width, offset;
 740         GtkBorder border;
 741
 742         g_return_if_fail (y_offset != NULL);
 743
 744         ev_page_cache_get_max_width (view->page_cache, view->rotation, zoom, &max_width);
 745
 746         compute_border (view, max_width, max_width, &border);
 747
 748         if (view->dual_page) {
 749                 ev_page_cache_get_height_to_page (view->page_cache, page,
 750                                                   view->rotation, zoom, NULL, &offset);
 751                 offset += ((page + ev_page_cache_get_dual_even_left (view->page_cache)) / 2 + 1) * view->spacing + ((page + ev_page_cache_get_dual_even_left (view->page_cache)) / 2 ) * (border.top + border.bottom);
 752         } else {
 753                 ev_page_cache_get_height_to_page (view->page_cache, page,
 754                                                   view->rotation, zoom, &offset, NULL);
 755                 offset += (page + 1) * view->spacing + page * (border.top + border.bottom);
 756         }
 757
 758         *y_offset = offset;
 759         return;
 760 }
 761
 762 static gboolean
 763 get_page_extents (EvView       *view,
 764                   gint          page,
 765                   GdkRectangle *page_area,
 766                   GtkBorder    *border)
 767 {
 768         GtkWidget *widget;
 769         int width, height;
 770
 771         widget = GTK_WIDGET (view);
 772
 773         /* Get the size of the page */
 774         ev_page_cache_get_size (view->page_cache, page,
 775                                 view->rotation,
 776                                 view->scale,
 777                                 &width, &height);
 778         compute_border (view, width, height, border);
 779         page_area->width = width + border->left + border->right;
 780         page_area->height = height + border->top + border->bottom;
 781
 782         if (view->presentation) {
 783                 page_area->x = (MAX (0, widget->allocation.width - width))/2;
 784                 page_area->y = (MAX (0, widget->allocation.height - height))/2;
 785         } else if (view->continuous) {
 786                 gint max_width;
 787                 gint x, y;
 788
 789                 ev_page_cache_get_max_width (view->page_cache, view->rotation,
 790                                              view->scale, &max_width);
 791                 max_width = max_width + border->left + border->right;
 792                 /* Get the location of the bounding box */
 793                 if (view->dual_page) {
 794                         x = view->spacing + ((page % 2 == ev_page_cache_get_dual_even_left (view->page_cache)) ? 0 : 1) * (max_width + view->spacing);
 795                         x = x + MAX (0, widget->allocation.width - (max_width * 2 + view->spacing * 3)) / 2;
 796                         if (page % 2 == ev_page_cache_get_dual_even_left (view->page_cache))
 797                                 x = x + (max_width - width - border->left - border->right);
 798                 } else {
 799                         x = view->spacing;
 800                         x = x + MAX (0, widget->allocation.width - (width + view->spacing * 2)) / 2;
 801                 }
 802
 803                 get_page_y_offset (view, page, view->scale, &y);
 804
 805                 page_area->x = x;
 806                 page_area->y = y;
 807         } else {
 808                 gint x, y;
 809                 if (view->dual_page) {
 810                         gint width_2, height_2;
 811                         gint max_width = width;
 812                         gint max_height = height;
 813                         GtkBorder overall_border;
 814                         gint other_page;
 815
 816                         other_page = (page % 2 == ev_page_cache_get_dual_even_left (view->page_cache)) ? page + 1: page - 1;
 817
 818                         /* First, we get the bounding box of the two pages */
 819                         if (other_page < ev_page_cache_get_n_pages (view->page_cache)
 820                             && (0 <= other_page)) {
 821                                 ev_page_cache_get_size (view->page_cache,
 822                                                         other_page,
 823                                                         view->rotation,
 824                                                         view->scale,
 825                                                         &width_2, &height_2);
 826                                 if (width_2 > width)
 827                                         max_width = width_2;
 828                                 if (height_2 > height)
 829                                         max_height = height_2;
 830                         }
 831                         compute_border (view, max_width, max_height, &overall_border);
 832
 833                         /* Find the offsets */
 834                         x = view->spacing;
 835                         y = view->spacing;
 836
 837                         /* Adjust for being the left or right page */
 838                         if (page % 2 == ev_page_cache_get_dual_even_left (view->page_cache))
 839                                 x = x + max_width - width;
 840                         else
 841                                 x = x + (max_width + overall_border.left + overall_border.right) + view->spacing;
 842
 843                         y = y + (max_height - height)/2;
 844
 845                         /* Adjust for extra allocation */
 846                         x = x + MAX (0, widget->allocation.width -
 847                                      ((max_width + overall_border.left + overall_border.right) * 2 + view->spacing * 3))/2;
 848                         y = y + MAX (0, widget->allocation.height - (height + view->spacing * 2))/2;
 849                 } else {
 850                         x = view->spacing;
 851                         y = view->spacing;
 852
 853                         /* Adjust for extra allocation */
 854                         x = x + MAX (0, widget->allocation.width - (width + border->left + border->right + view->spacing * 2))/2;
 855                         y = y + MAX (0, widget->allocation.height - (height + border->top + border->bottom +  view->spacing * 2))/2;
 856                 }
 857
 858                 page_area->x = x;
 859                 page_area->y = y;
 860         }
 861
 862         return TRUE;
 863 }
 864
 865 static void
 866 view_point_to_doc_point (EvView *view,
 867                          GdkPoint *view_point,
 868                          GdkRectangle *page_area,
 869                          double  *doc_point_x,
 870                          double  *doc_point_y)
 871 {
 872         *doc_point_x = (double) (view_point->x - page_area->x) / view->scale;
 873         *doc_point_y = (double) (view_point->y - page_area->y) / view->scale;
 874 }
 875
 876 static void
 877 view_rect_to_doc_rect (EvView *view,
 878                        GdkRectangle *view_rect,
 879                        GdkRectangle *page_area,
 880                        EvRectangle  *doc_rect)
 881 {
 882         doc_rect->x1 = (double) (view_rect->x - page_area->x) / view->scale;
 883         doc_rect->y1 = (double) (view_rect->y - page_area->y) / view->scale;
 884         doc_rect->x2 = doc_rect->x1 + (double) view_rect->width / view->scale;
 885         doc_rect->y2 = doc_rect->y1 + (double) view_rect->height / view->scale;
 886 }
 887
 888 static gboolean
 889 doc_point_to_view_point (EvView       *view,
 890                          int           page,
 891                          EvPoint      *doc_point,
 892                          GdkPoint     *view_point)
 893 {
 894         GdkRectangle page_area;
 895         GtkBorder border;
 896         double x, y, view_x, view_y;
 897         int width, height;
 898
 899         ev_page_cache_get_size (view->page_cache, page,
 900                                 view->rotation,
 901                                 1.0,
 902                                 &width, &height);
 903
 904         if (view->rotation == 0) {
 905                 x = doc_point->x;
 906                 y = doc_point->y;
 907         } else if (view->rotation == 90) {
 908                 x = width - doc_point->y;
 909                 y = doc_point->x;
 910         } else if (view->rotation == 180) {
 911                 x = width - doc_point->x;
 912                 y = height - doc_point->y;
 913         } else if (view->rotation == 270) {
 914                 x = doc_point->y;
 915                 y = height - doc_point->x;
 916         } else {
 917                 g_assert_not_reached ();
 918         }
 919
 920         get_page_extents (view, page, &page_area, &border);
 921
 922         view_x = x * view->scale;
 923         view_y = y * view->scale;
 924         view_point->x = view_x + page_area.x;
 925         view_point->y = view_y + page_area.y;
 926
 927         return (view_x > 0 && view_x <= page_area.width &&
 928                 view_y > 0 && view_y <= page_area.height);
 929 }
 930
 931 static void
 932 doc_rect_to_view_rect (EvView       *view,
 933                        int           page,
 934                        EvRectangle  *doc_rect,
 935                        GdkRectangle *view_rect)
 936 {
 937         GdkRectangle page_area;
 938         GtkBorder border;
 939         double x, y, w, h;
 940         int width, height;
 941
 942         ev_page_cache_get_size (view->page_cache, page,
 943                                 view->rotation,
 944                                 1.0,
 945                                 &width, &height);
 946
 947         if (view->rotation == 0) {
 948                 x = doc_rect->x1;
 949                 y = doc_rect->y1;
 950                 w = doc_rect->x2 - doc_rect->x1;
 951                 h = doc_rect->y2 - doc_rect->y1;
 952         } else if (view->rotation == 90) {
 953                 x = width - doc_rect->y2;
 954                 y = doc_rect->x1;
 955                 w = doc_rect->y2 - doc_rect->y1;
 956                 h = doc_rect->x2 - doc_rect->x1;
 957         } else if (view->rotation == 180) {
 958                 x = width - doc_rect->x2;
 959                 y = height - doc_rect->y2;
 960                 w = doc_rect->x2 - doc_rect->x1;
 961                 h = doc_rect->y2 - doc_rect->y1;
 962         } else if (view->rotation == 270) {
 963                 x = doc_rect->y1;
 964                 y = height - doc_rect->x2;
 965                 w = doc_rect->y2 - doc_rect->y1;
 966                 h = doc_rect->x2 - doc_rect->x1;
 967         } else {
 968                 g_assert_not_reached ();
 969         }
 970
 971         get_page_extents (view, page, &page_area, &border);
 972
 973         view_rect->x = x * view->scale + page_area.x;
 974         view_rect->y = y * view->scale + page_area.y;
 975         view_rect->width = w * view->scale;
 976         view_rect->height = h * view->scale;
 977 }
 978
 979 static void
 980 find_page_at_location (EvView  *view,
 981                        gdouble  x,
 982                        gdouble  y,
 983                        gint    *page,
 984                        gint    *x_offset,
 985                        gint    *y_offset)
 986 {
 987         int i;
 988
 989         if (view->document == NULL)
 990                 return;
 991
 992         g_assert (page);
 993         g_assert (x_offset);
 994         g_assert (y_offset);
 995
 996         for (i = view->start_page; i <= view->end_page; i++) {
 997                 GdkRectangle page_area;
 998                 GtkBorder border;
 999
1000                 if (! get_page_extents (view, i, &page_area, &border))
1001                         continue;
1002
1003                 if ((x >= page_area.x + border.left) &&
1004                     (x < page_area.x + page_area.width - border.right) &&
1005                     (y >= page_area.y + border.top) &&
1006                     (y < page_area.y + page_area.height - border.bottom)) {
1007                         *page = i;
1008                         *x_offset = x - (page_area.x + border.left);
1009                         *y_offset = y - (page_area.y + border.top);
1010                         return;
1011                 }
1012         }
1013
1014         *page = -1;
1015 }
1016
1017 static gboolean
1018 location_in_text (EvView  *view,
1019                   gdouble  x,
1020                   gdouble  y)
1021 {
1022         GdkRegion *region;
1023         gint page = -1;
1024         gint x_offset = 0, y_offset = 0;
1025
1026         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1027
1028         if (page == -1)
1029                 return FALSE;
1030
1031         region = ev_pixbuf_cache_get_text_mapping (view->pixbuf_cache, page);
1032
1033         if (region)
1034                 return gdk_region_point_in (region, x_offset / view->scale, y_offset / view->scale);
1035         else
1036                 return FALSE;
1037 }
1038
1039 static int
1040 ev_view_get_width (EvView *view)
1041 {
1042         return GTK_WIDGET (view)->allocation.width;
1043 }
1044
1045 static int
1046 ev_view_get_height (EvView *view)
1047 {
1048         return GTK_WIDGET (view)->allocation.height;
1049 }
1050
1051 static gboolean
1052 location_in_selected_text (EvView  *view,
1053                            gdouble  x,
1054                            gdouble  y)
1055 {
1056         gint page = -1;
1057         gint x_offset = 0, y_offset = 0;
1058         EvViewSelection *selection;
1059         GList *l = NULL;
1060
1061         for (l = view->selection_info.selections; l != NULL; l = l->next) {
1062                 selection = (EvViewSelection *)l->data;
1063
1064                 find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1065
1066                 if (page != selection->page)
1067                         continue;
1068
1069                 if (selection->covered_region &&
1070                     gdk_region_point_in (selection->covered_region, x_offset, y_offset))
1071                         return TRUE;
1072         }
1073
1074         return FALSE;
1075 }
1076
1077 static gboolean
1078 get_doc_point_from_offset (EvView *view,
1079                            gint    page,
1080                            gint    x_offset,
1081                            gint    y_offset,
1082                            gint   *x_new,
1083                            gint   *y_new)
1084 {
1085         int width, height;
1086         double x, y;
1087
1088         ev_page_cache_get_size (view->page_cache, page,
1089                                 view->rotation,
1090                                 1.0,
1091                                 &width, &height);
1092
1093         x_offset = x_offset / view->scale;
1094         y_offset = y_offset / view->scale;
1095
1096         if (view->rotation == 0) {
1097                 x = x_offset;
1098                 y = y_offset;
1099         } else if (view->rotation == 90) {
1100                 x = y_offset;
1101                 y = width - x_offset;
1102         } else if (view->rotation == 180) {
1103                 x = width - x_offset;
1104                 y = height - y_offset;
1105         } else if (view->rotation == 270) {
1106                 x = height - y_offset;
1107                 y = x_offset;
1108         } else {
1109                 g_assert_not_reached ();
1110         }
1111
1112         *x_new = x;
1113         *y_new = y;
1114
1115         return TRUE;
1116 }
1117
1118 /*** Hyperref ***/
1119 static EvLink *
1120 ev_view_get_link_at_location (EvView  *view,
1121                               gdouble  x,
1122                               gdouble  y)
1123 {
1124         gint page = -1;
1125         gint x_offset = 0, y_offset = 0;
1126         gint x_new = 0, y_new = 0;
1127         GList *link_mapping;
1128
1129         if (!EV_IS_DOCUMENT_LINKS (view->document))
1130                 return NULL;
1131
1132         x += view->scroll_x;
1133         y += view->scroll_y;
1134
1135         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1136
1137         if (page == -1)
1138                 return NULL;
1139
1140
1141         if (get_doc_point_from_offset (view, page, x_offset,
1142                                        y_offset, &x_new, &y_new) == FALSE)
1143                 return NULL;
1144
1145         link_mapping = ev_pixbuf_cache_get_link_mapping (view->pixbuf_cache, page);
1146
1147         if (link_mapping)
1148                 return ev_link_mapping_find (link_mapping, x_new, y_new);
1149         else
1150                 return NULL;
1151 }
1152
1153 static void
1154 goto_fitr_dest (EvView *view, EvLinkDest *dest)
1155 {
1156         EvPoint doc_point;
1157         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         if (view->drag_info.in_drag) {
1503                 if (view->cursor != EV_VIEW_CURSOR_DRAG)
1504                         ev_view_set_cursor (view, EV_VIEW_CURSOR_DRAG);
1505                 return;
1506         }
1507
1508         link = ev_view_get_link_at_location (view, x, y);
1509
1510 #if !GTK_CHECK_VERSION (2, 11, 7)
1511         if (view->link_tooltip == NULL) {
1512                 view->link_tooltip = ev_tooltip_new (GTK_WIDGET (view));
1513         }
1514
1515         if (view->hovered_link != link) {
1516                 view->hovered_link = link;
1517                 ev_tooltip_deactivate (EV_TOOLTIP (view->link_tooltip));
1518         }
1519 #endif
1520
1521         if (link) {
1522 #if GTK_CHECK_VERSION (2, 11, 7)
1523                 g_object_set (view, "has-tooltip", TRUE, NULL);
1524 #else
1525                 char *msg = tip_from_link (view, link);
1526
1527                 if (msg && g_utf8_validate (msg, -1, NULL)) {
1528                         EvTooltip *tooltip = EV_TOOLTIP (view->link_tooltip);
1529
1530                         ev_tooltip_set_position (tooltip, x, y);
1531                         ev_tooltip_set_text (tooltip, msg);
1532                         ev_tooltip_activate (tooltip);
1533                 }
1534                 g_free (msg);
1535 #endif
1536                 ev_view_set_cursor (view, EV_VIEW_CURSOR_LINK);
1537         } else if ((field = ev_view_get_form_field_at_location (view, x, y))) {
1538                 if (field->is_read_only) {
1539                         if (view->cursor == EV_VIEW_CURSOR_LINK ||
1540                             view->cursor == EV_VIEW_CURSOR_IBEAM ||
1541                             view->cursor == EV_VIEW_CURSOR_DRAG)
1542                                 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
1543                 } else if (EV_IS_FORM_FIELD_TEXT (field)) {
1544                         ev_view_set_cursor (view, EV_VIEW_CURSOR_IBEAM);
1545                 } else {
1546                         ev_view_set_cursor (view, EV_VIEW_CURSOR_LINK);
1547                 }
1548         } else if (location_in_text (view, x + view->scroll_x, y + view->scroll_y)) {
1549                 ev_view_set_cursor (view, EV_VIEW_CURSOR_IBEAM);
1550         } else {
1551                 if (view->cursor == EV_VIEW_CURSOR_LINK ||
1552                     view->cursor == EV_VIEW_CURSOR_IBEAM ||
1553                     view->cursor == EV_VIEW_CURSOR_DRAG)
1554                         ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
1555         }
1556 }
1557
1558 /*** Images ***/
1559 static EvImage *
1560 ev_view_get_image_at_location (EvView  *view,
1561                                gdouble  x,
1562                                gdouble  y)
1563 {
1564         gint page = -1;
1565         gint x_offset = 0, y_offset = 0;
1566         gint x_new = 0, y_new = 0;
1567         GList *image_mapping;
1568
1569         if (!EV_IS_DOCUMENT_IMAGES (view->document))
1570                 return NULL;
1571
1572         x += view->scroll_x;
1573         y += view->scroll_y;
1574
1575         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1576
1577         if (page == -1)
1578                 return NULL;
1579
1580         if (get_doc_point_from_offset (view, page, x_offset,
1581                                        y_offset, &x_new, &y_new) == FALSE)
1582                 return NULL;
1583
1584         image_mapping = ev_pixbuf_cache_get_image_mapping (view->pixbuf_cache, page);
1585
1586         if (image_mapping)
1587                 return ev_image_mapping_find (image_mapping, x_new, y_new);
1588         else
1589                 return NULL;
1590 }
1591
1592 /*** Forms ***/
1593 static EvFormField *
1594 ev_view_get_form_field_at_location (EvView  *view,
1595                                     gdouble  x,
1596                                     gdouble  y)
1597 {
1598         gint page = -1;
1599         gint x_offset = 0, y_offset = 0;
1600         gint x_new = 0, y_new = 0;
1601         GList *forms_mapping;
1602
1603         if (!EV_IS_DOCUMENT_FORMS (view->document))
1604                 return NULL;
1605
1606         x += view->scroll_x;
1607         y += view->scroll_y;
1608
1609         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1610
1611         if (page == -1)
1612                 return NULL;
1613
1614         if (get_doc_point_from_offset (view, page, x_offset,
1615                                        y_offset, &x_new, &y_new) == FALSE)
1616                 return NULL;
1617
1618         forms_mapping = ev_pixbuf_cache_get_form_field_mapping (view->pixbuf_cache, page);
1619
1620         if (forms_mapping)
1621                 return ev_form_field_mapping_find (forms_mapping, x_new, y_new);
1622         else
1623                 return NULL;
1624 }
1625
1626 static GdkRegion *
1627 ev_view_form_field_get_region (EvView      *view,
1628                                EvFormField *field)
1629 {
1630         EvRectangle  field_area;
1631         GdkRectangle view_area;
1632         GList       *forms_mapping;
1633
1634         forms_mapping = ev_pixbuf_cache_get_form_field_mapping (view->pixbuf_cache,
1635                                                                 field->page);
1636         ev_form_field_mapping_get_area (forms_mapping, field, &field_area);
1637         doc_rect_to_view_rect (view, field->page, &field_area, &view_area);
1638         view_area.x -= view->scroll_x;
1639         view_area.y -= view->scroll_y;
1640
1641         return gdk_region_rectangle (&view_area);
1642 }
1643
1644 static gboolean
1645 ev_view_forms_remove_widgets (EvView *view)
1646 {
1647         ev_view_remove_all (view);
1648
1649         return FALSE;
1650 }
1651
1652 static void
1653 ev_view_form_field_destroy (GtkWidget *widget,
1654                             EvView    *view)
1655 {
1656         g_idle_add ((GSourceFunc)ev_view_forms_remove_widgets, view);
1657 }
1658
1659 static GtkWidget *
1660 ev_view_form_field_button_create_widget (EvView      *view,
1661                                          EvFormField *field)
1662 {
1663         EvFormFieldButton *field_button = EV_FORM_FIELD_BUTTON (field);
1664         GdkRegion         *field_region = NULL;
1665
1666         switch (field_button->type) {
1667                 case EV_FORM_FIELD_BUTTON_PUSH:
1668                         return NULL;
1669                 case EV_FORM_FIELD_BUTTON_CHECK:
1670                 case EV_FORM_FIELD_BUTTON_RADIO: {
1671                         gboolean  state;
1672                         GList    *forms_mapping, *l;
1673
1674                         state = ev_document_forms_form_field_button_get_state (EV_DOCUMENT_FORMS (view->document),
1675                                                                                field);
1676
1677                         /* FIXME: it actually depends on NoToggleToOff flags */
1678                         if (field_button->type == EV_FORM_FIELD_BUTTON_RADIO &&
1679                             state && field_button->state)
1680                                 return NULL;
1681
1682                         field_region = ev_view_form_field_get_region (view, field);
1683
1684                         /* For radio buttons and checkbox buttons that are in a set
1685                          * we need to update also the region for the current selected item
1686                          */
1687                         forms_mapping = ev_pixbuf_cache_get_form_field_mapping (view->pixbuf_cache,
1688                                                                                 field->page);
1689                         for (l = forms_mapping; l; l = g_list_next (l)) {
1690                                 EvFormField *button = ((EvFormFieldMapping *)(l->data))->field;
1691                                 GdkRegion   *button_region;
1692
1693                                 if (button->id == field->id)
1694                                         continue;
1695
1696                                 /* FIXME: only buttons in the same group should be updated */
1697                                 if (!EV_IS_FORM_FIELD_BUTTON (button) ||
1698                                     EV_FORM_FIELD_BUTTON (button)->type != field_button->type ||
1699                                     EV_FORM_FIELD_BUTTON (button)->state != TRUE)
1700                                         continue;
1701
1702                                 button_region = ev_view_form_field_get_region (view, button);
1703                                 gdk_region_union (field_region, button_region);
1704                                 gdk_region_destroy (button_region);
1705                         }
1706
1707                         ev_document_forms_form_field_button_set_state (EV_DOCUMENT_FORMS (view->document),
1708                                                                        field, !state);
1709                         field_button->state = !state;
1710                 }
1711                         break;
1712         }
1713
1714         ev_pixbuf_cache_reload_page (view->pixbuf_cache,
1715                                      field_region,
1716                                      field->page,
1717                                      view->rotation,
1718                                      view->scale);
1719         gdk_region_destroy (field_region);
1720
1721         return NULL;
1722 }
1723
1724 static void
1725 ev_view_form_field_text_save (EvView    *view,
1726                               GtkWidget *widget)
1727 {
1728         EvFormField *field;
1729
1730         if (!view->document)
1731                 return;
1732
1733         field = g_object_get_data (G_OBJECT (widget), "form-field");
1734
1735         if (field->changed) {
1736                 EvFormFieldText *field_text = EV_FORM_FIELD_TEXT (field);
1737                 GdkRegion       *field_region;
1738
1739                 field_region = ev_view_form_field_get_region (view, field);
1740
1741                 ev_document_forms_form_field_text_set_text (EV_DOCUMENT_FORMS (view->document),
1742                                                             field, field_text->text);
1743                 field->changed = FALSE;
1744                 ev_pixbuf_cache_reload_page (view->pixbuf_cache,
1745                                              field_region,
1746                                              field->page,
1747                                              view->rotation,
1748                                              view->scale);
1749                 gdk_region_destroy (field_region);
1750         }
1751 }
1752
1753 static void
1754 ev_view_form_field_text_changed (GtkWidget   *widget,
1755                                  EvFormField *field)
1756 {
1757         EvFormFieldText *field_text = EV_FORM_FIELD_TEXT (field);
1758         gchar           *text = NULL;
1759
1760         if (GTK_IS_ENTRY (widget)) {
1761                 text = g_strdup (gtk_entry_get_text (GTK_ENTRY (widget)));
1762         } else if (GTK_IS_TEXT_BUFFER (widget)) {
1763                 GtkTextIter start, end;
1764
1765                 gtk_text_buffer_get_bounds (GTK_TEXT_BUFFER (widget), &start, &end);
1766                 text = gtk_text_buffer_get_text (GTK_TEXT_BUFFER (widget),
1767                                                  &start, &end, FALSE);
1768         }
1769
1770         if (!field_text->text ||
1771             (field_text->text && g_ascii_strcasecmp (field_text->text, text) != 0)) {
1772                 g_free (field_text->text);
1773                 field_text->text = text;
1774                 field->changed = TRUE;
1775         }
1776 }
1777
1778 static GtkWidget *
1779 ev_view_form_field_text_create_widget (EvView      *view,
1780                                        EvFormField *field)
1781 {
1782         EvFormFieldText *field_text = EV_FORM_FIELD_TEXT (field);
1783         GtkWidget       *text = NULL;
1784         gchar           *txt;
1785
1786         txt = ev_document_forms_form_field_text_get_text (EV_DOCUMENT_FORMS (view->document),
1787                                                           field);
1788
1789         switch (field_text->type) {
1790                 case EV_FORM_FIELD_TEXT_FILE_SELECT:
1791                         /* TODO */
1792                 case EV_FORM_FIELD_TEXT_NORMAL:
1793                         text = gtk_entry_new ();
1794                         gtk_entry_set_has_frame (GTK_ENTRY (text), FALSE);
1795                         gtk_entry_set_max_length (GTK_ENTRY (text), field_text->max_len);
1796                         gtk_entry_set_visibility (GTK_ENTRY (text), !field_text->is_password);
1797
1798                         if (txt) {
1799                                 gtk_entry_set_text (GTK_ENTRY (text), txt);
1800                                 g_free (txt);
1801                         }
1802
1803                         g_signal_connect (G_OBJECT (text), "changed",
1804                                           G_CALLBACK (ev_view_form_field_text_changed),
1805                                           field);
1806                         g_signal_connect_after (G_OBJECT (text), "activate",
1807                                                 G_CALLBACK (ev_view_form_field_destroy),
1808                                                 view);
1809                         break;
1810                 case EV_FORM_FIELD_TEXT_MULTILINE: {
1811                         GtkTextBuffer *buffer;
1812
1813                         text = gtk_text_view_new ();
1814                         buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (text));
1815
1816                         if (txt) {
1817                                 gtk_text_buffer_set_text (buffer, txt, -1);
1818                                 g_free (txt);
1819                         }
1820
1821                         g_signal_connect (G_OBJECT (buffer), "changed",
1822                                           G_CALLBACK (ev_view_form_field_text_changed),
1823                                           field);
1824                 }
1825                         break;
1826         }
1827
1828         g_object_weak_ref (G_OBJECT (text),
1829                            (GWeakNotify)ev_view_form_field_text_save,
1830                            view);
1831
1832         return text;
1833 }
1834
1835 static void
1836 ev_view_form_field_choice_save (EvView    *view,
1837                                 GtkWidget *widget)
1838 {
1839         EvFormField *field;
1840
1841         if (!view->document)
1842                 return;
1843
1844         field = g_object_get_data (G_OBJECT (widget), "form-field");
1845
1846         if (field->changed) {
1847                 GList             *l;
1848                 EvFormFieldChoice *field_choice = EV_FORM_FIELD_CHOICE (field);
1849                 GdkRegion         *field_region;
1850
1851                 field_region = ev_view_form_field_get_region (view, field);
1852
1853                 if (field_choice->is_editable) {
1854                         ev_document_forms_form_field_choice_set_text (EV_DOCUMENT_FORMS (view->document),
1855                                                                       field, field_choice->text);
1856                 } else {
1857                         ev_document_forms_form_field_choice_unselect_all (EV_DOCUMENT_FORMS (view->document), field);
1858                         for (l = field_choice->selected_items; l; l = g_list_next (l)) {
1859                                 ev_document_forms_form_field_choice_select_item (EV_DOCUMENT_FORMS (view->document),
1860                                                                                  field,
1861                                                                                  GPOINTER_TO_INT (l->data));
1862                         }
1863                 }
1864                 field->changed = FALSE;
1865                 ev_pixbuf_cache_reload_page (view->pixbuf_cache,
1866                                              field_region,
1867                                              field->page,
1868                                              view->rotation,
1869                                              view->scale);
1870                 gdk_region_destroy (field_region);
1871         }
1872 }
1873
1874 static void
1875 ev_view_form_field_choice_changed (GtkWidget   *widget,
1876                                    EvFormField *field)
1877 {
1878         EvFormFieldChoice *field_choice = EV_FORM_FIELD_CHOICE (field);
1879
1880         if (GTK_IS_COMBO_BOX (widget)) {
1881                 gint item;
1882
1883                 item = gtk_combo_box_get_active (GTK_COMBO_BOX (widget));
1884                 if (GPOINTER_TO_INT (field_choice->selected_items->data) != item) {
1885                         g_list_free (field_choice->selected_items);
1886                         field_choice->selected_items = NULL;
1887                         field_choice->selected_items = g_list_prepend (field_choice->selected_items,
1888                                                                        GINT_TO_POINTER (item));
1889                         field->changed = TRUE;
1890                 }
1891
1892                 if (GTK_IS_COMBO_BOX_ENTRY (widget)) {
1893                         gchar *text;
1894
1895                         text = gtk_combo_box_get_active_text (GTK_COMBO_BOX (widget));
1896                         if (!field_choice->text ||
1897                             (field_choice->text && g_ascii_strcasecmp (field_choice->text, text) != 0)) {
1898                                 g_free (field_choice->text);
1899                                 field_choice->text = text;
1900                                 field->changed = TRUE;
1901                         }
1902                 }
1903         } else if (GTK_IS_TREE_SELECTION (widget)) {
1904                 GtkTreeSelection *selection = GTK_TREE_SELECTION (widget);
1905                 GtkTreeModel     *model;
1906                 GList            *items, *l;
1907
1908                 items = gtk_tree_selection_get_selected_rows (selection, &model);
1909                 g_list_free (field_choice->selected_items);
1910                 field_choice->selected_items = NULL;
1911
1912                 for (l = items; l && l->data; l = g_list_next (l)) {
1913                         GtkTreeIter  iter;
1914                         GtkTreePath *path = (GtkTreePath *)l->data;
1915                         gint         item;
1916
1917                         gtk_tree_model_get_iter (model, &iter, path);
1918                         gtk_tree_model_get (model, &iter, 1, &item, -1);
1919
1920                         field_choice->selected_items = g_list_prepend (field_choice->selected_items,
1921                                                                        GINT_TO_POINTER (item));
1922
1923                         gtk_tree_path_free (path);
1924                 }
1925
1926                 g_list_free (items);
1927
1928                 field->changed = TRUE;
1929         }
1930 }
1931
1932 static GtkWidget *
1933 ev_view_form_field_choice_create_widget (EvView      *view,
1934                                          EvFormField *field)
1935 {
1936         EvFormFieldChoice *field_choice = EV_FORM_FIELD_CHOICE (field);
1937         GtkWidget         *choice;
1938         GtkTreeModel      *model;
1939         gint               n_items, i;
1940         gint               selected_item = 0;
1941
1942         n_items = ev_document_forms_form_field_choice_get_n_items (EV_DOCUMENT_FORMS (view->document),
1943                                                                    field);
1944         model = GTK_TREE_MODEL (gtk_list_store_new (2, G_TYPE_STRING, G_TYPE_INT));
1945         for (i = 0; i < n_items; i++) {
1946                 GtkTreeIter iter;
1947                 gchar      *item;
1948
1949                 item = ev_document_forms_form_field_choice_get_item (EV_DOCUMENT_FORMS (view->document),
1950                                                                      field, i);
1951                 if (ev_document_forms_form_field_choice_is_item_selected (
1952                             EV_DOCUMENT_FORMS (view->document), field, i)) {
1953                         selected_item = i;
1954                         /* FIXME: we need a get_selected_items function in poppler */
1955                         field_choice->selected_items = g_list_prepend (field_choice->selected_items,
1956                                                                        GINT_TO_POINTER (i));
1957                 }
1958
1959                 if (item) {
1960                         gtk_list_store_append (GTK_LIST_STORE (model), &iter);
1961                         gtk_list_store_set (GTK_LIST_STORE (model), &iter,
1962                                             0, item,
1963                                             1, i,
1964                                             -1);
1965                         g_free (item);
1966                 }
1967         }
1968
1969         if (field_choice->type == EV_FORM_FIELD_CHOICE_LIST) {
1970                 GtkCellRenderer  *renderer;
1971                 GtkWidget        *tree_view;
1972                 GtkTreeSelection *selection;
1973
1974                 tree_view = gtk_tree_view_new_with_model (model);
1975                 gtk_tree_view_set_headers_visible (GTK_TREE_VIEW (tree_view), FALSE);
1976
1977                 selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (tree_view));
1978                 if (field_choice->multi_select) {
1979                         gtk_tree_selection_set_mode (selection, GTK_SELECTION_MULTIPLE);
1980                 }
1981
1982                 /* TODO: set selected items */
1983
1984                 renderer = gtk_cell_renderer_text_new ();
1985                 gtk_tree_view_insert_column_with_attributes (GTK_TREE_VIEW (tree_view),
1986                                                              0,
1987                                                              "choix", renderer,
1988                                                              "text", 0,
1989                                                              NULL);
1990
1991                 choice = gtk_scrolled_window_new (NULL, NULL);
1992                 gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (choice),
1993                                                 GTK_POLICY_AUTOMATIC,
1994                                                 GTK_POLICY_AUTOMATIC);
1995                 gtk_container_add (GTK_CONTAINER (choice), tree_view);
1996                 gtk_widget_show (tree_view);
1997
1998                 g_signal_connect (G_OBJECT (selection), "changed",
1999                                   G_CALLBACK (ev_view_form_field_choice_changed),
2000                                   field);
2001                 g_signal_connect_after (G_OBJECT (selection), "changed",
2002                                         G_CALLBACK (ev_view_form_field_destroy),
2003                                         view);
2004         } else if (field_choice->is_editable) { /* ComboBoxEntry */
2005                 gchar *text;
2006
2007                 choice = gtk_combo_box_entry_new_with_model (model, 0);
2008                 text = ev_document_forms_form_field_choice_get_text (EV_DOCUMENT_FORMS (view->document), field);
2009                 if (text) {
2010                         gtk_entry_set_text (GTK_ENTRY (gtk_bin_get_child (GTK_BIN (choice))), text);
2011                         g_free (text);
2012                 }
2013
2014                 g_signal_connect (G_OBJECT (choice), "changed",
2015                                   G_CALLBACK (ev_view_form_field_choice_changed),
2016                                   field);
2017                 g_signal_connect_after (G_OBJECT (GTK_BIN (choice)->child), "activate",
2018                                         G_CALLBACK (ev_view_form_field_destroy),
2019                                         view);
2020         } else { /* ComboBoxText */
2021                 GtkCellRenderer *renderer;
2022
2023                 choice = gtk_combo_box_new_with_model (model);
2024                 renderer = gtk_cell_renderer_text_new ();
2025                 gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (choice),
2026                                             renderer, TRUE);
2027                 gtk_cell_layout_set_attributes (GTK_CELL_LAYOUT (choice),
2028                                                 renderer,
2029                                                 "text", 0,
2030                                                 NULL);
2031                 gtk_combo_box_set_active (GTK_COMBO_BOX (choice), selected_item);
2032                 gtk_combo_box_popup (GTK_COMBO_BOX (choice));
2033
2034                 g_signal_connect (G_OBJECT (choice), "changed",
2035                                   G_CALLBACK (ev_view_form_field_choice_changed),
2036                                   field);
2037                 g_signal_connect_after (G_OBJECT (choice), "changed",
2038                                         G_CALLBACK (ev_view_form_field_destroy),
2039                                         view);
2040         }
2041
2042         g_object_unref (model);
2043
2044         g_object_weak_ref (G_OBJECT (choice),
2045                            (GWeakNotify)ev_view_form_field_choice_save,
2046                            view);
2047
2048         return choice;
2049 }
2050
2051 static void
2052 ev_view_handle_form_field (EvView      *view,
2053                            EvFormField *field,
2054                            gdouble      x,
2055                            gdouble      y)
2056 {
2057         GtkWidget   *field_widget = NULL;
2058         GList       *form_field_mapping;
2059         EvRectangle  field_area;
2060         GdkRectangle view_area;
2061
2062         if (field->is_read_only)
2063                 return;
2064
2065         if (EV_IS_FORM_FIELD_BUTTON (field)) {
2066                 field_widget = ev_view_form_field_button_create_widget (view, field);
2067         } else if (EV_IS_FORM_FIELD_TEXT (field)) {
2068                 field_widget = ev_view_form_field_text_create_widget (view, field);
2069         } else if (EV_IS_FORM_FIELD_CHOICE (field)) {
2070                 field_widget = ev_view_form_field_choice_create_widget (view, field);
2071         } else if (EV_IS_FORM_FIELD_SIGNATURE (field)) {
2072                 /* TODO */
2073         }
2074
2075         /* Form field doesn't require a widget */
2076         if (!field_widget)
2077                 return;
2078
2079         g_object_set_data_full (G_OBJECT (field_widget), "form-field",
2080                                 g_object_ref (field),
2081                                 (GDestroyNotify)g_object_unref);
2082
2083         form_field_mapping = ev_pixbuf_cache_get_form_field_mapping (view->pixbuf_cache, field->page);
2084         ev_form_field_mapping_get_area (form_field_mapping, field, &field_area);
2085
2086         doc_rect_to_view_rect (view, field->page, &field_area, &view_area);
2087         view_area.x -= view->scroll_x;
2088         view_area.y -= view->scroll_y;
2089
2090         gtk_layout_put (GTK_LAYOUT (view), field_widget, view_area.x, view_area.y);
2091         gtk_widget_show (field_widget);
2092         gtk_widget_grab_focus (field_widget);
2093 }
2094
2095 /*** GtkWidget implementation ***/
2096
2097 static void
2098 ev_view_size_request_continuous_dual_page (EvView         *view,
2099                                            GtkRequisition *requisition)
2100 {
2101         int max_width;
2102         gint n_pages;
2103         GtkBorder border;
2104
2105         ev_page_cache_get_max_width (view->page_cache, view->rotation,
2106                                      view->scale, &max_width);
2107         compute_border (view, max_width, max_width, &border);
2108
2109         n_pages = ev_page_cache_get_n_pages (view->page_cache) + 1;
2110
2111         requisition->width = (max_width + border.left + border.right) * 2 + (view->spacing * 3);
2112         get_page_y_offset (view, n_pages, view->scale, &requisition->height);
2113
2114         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
2115                 requisition->width = 1;
2116         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
2117                 requisition->width = 1;
2118                 /* FIXME: This could actually be set on one page docs or docs
2119                  * with a strange aspect ratio. */
2120                 /* requisition->height = 1;*/
2121         }
2122 }
2123
2124 static void
2125 ev_view_size_request_continuous (EvView         *view,
2126                                  GtkRequisition *requisition)
2127 {
2128         int max_width;
2129         int n_pages;
2130         GtkBorder border;
2131
2132
2133         ev_page_cache_get_max_width (view->page_cache, view->rotation,
2134                                      view->scale, &max_width);
2135         n_pages = ev_page_cache_get_n_pages (view->page_cache);
2136         compute_border (view, max_width, max_width, &border);
2137
2138         requisition->width = max_width + (view->spacing * 2) + border.left + border.right;
2139         get_page_y_offset (view, n_pages, view->scale, &requisition->height);
2140
2141         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
2142                 requisition->width = 1;
2143         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
2144                 requisition->width = 1;
2145                 /* FIXME: This could actually be set on one page docs or docs
2146                  * with a strange aspect ratio. */
2147                 /* requisition->height = 1;*/
2148         }
2149 }
2150
2151 static void
2152 ev_view_size_request_dual_page (EvView         *view,
2153                                 GtkRequisition *requisition)
2154 {
2155         GtkBorder border;
2156         gint width, height;
2157
2158         /* Find the largest of the two. */
2159         ev_page_cache_get_size (view->page_cache,
2160                                 view->current_page,
2161                                 view->rotation,
2162                                 view->scale,
2163                                 &width, &height);
2164         if (view->current_page + 1 < ev_page_cache_get_n_pages (view->page_cache)) {
2165                 gint width_2, height_2;
2166                 ev_page_cache_get_size (view->page_cache,
2167                                         view->current_page + 1,
2168                                         view->rotation,
2169                                         view->scale,
2170                                         &width_2, &height_2);
2171                 if (width_2 > width) {
2172                         width = width_2;
2173                         height = height_2;
2174                 }
2175         }
2176         compute_border (view, width, height, &border);
2177
2178         requisition->width = ((width + border.left + border.right) * 2) +
2179                 (view->spacing * 3);
2180         requisition->height = (height + border.top + border.bottom) +
2181                 (view->spacing * 2);
2182
2183         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
2184                 requisition->width = 1;
2185         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
2186                 requisition->width = 1;
2187                 requisition->height = 1;
2188         }
2189 }
2190
2191 static void
2192 ev_view_size_request_single_page (EvView         *view,
2193                                   GtkRequisition *requisition)
2194 {
2195         GtkBorder border;
2196         gint width, height;
2197
2198         ev_page_cache_get_size (view->page_cache,
2199                                 view->current_page,
2200                                 view->rotation,
2201                                 view->scale,
2202                                 &width, &height);
2203         compute_border (view, width, height, &border);
2204
2205         requisition->width = width + border.left + border.right + (2 * view->spacing);
2206         requisition->height = height + border.top + border.bottom + (2 * view->spacing);
2207
2208         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
2209                 requisition->width = 1;
2210                 requisition->height = height + border.top + border.bottom + (2 * view->spacing);
2211         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
2212                 requisition->width = 1;
2213                 requisition->height = 1;
2214         }
2215 }
2216
2217 static void
2218 ev_view_size_request (GtkWidget      *widget,
2219                       GtkRequisition *requisition)
2220 {
2221         EvView *view = EV_VIEW (widget);
2222
2223         if (view->document == NULL) {
2224                 requisition->width = 1;
2225                 requisition->height = 1;
2226                 return;
2227         }
2228
2229         if (view->presentation) {
2230                 requisition->width = 1;
2231                 requisition->height = 1;
2232                 return;
2233         }
2234
2235         if (view->continuous && view->dual_page)
2236                 ev_view_size_request_continuous_dual_page (view, requisition);
2237         else if (view->continuous)
2238                 ev_view_size_request_continuous (view, requisition);
2239         else if (view->dual_page)
2240                 ev_view_size_request_dual_page (view, requisition);
2241         else
2242                 ev_view_size_request_single_page (view, requisition);
2243 }
2244
2245 static void
2246 ev_view_size_allocate (GtkWidget      *widget,
2247                        GtkAllocation  *allocation)
2248 {
2249         EvView *view = EV_VIEW (widget);
2250         GList  *children, *l;
2251
2252         GTK_WIDGET_CLASS (ev_view_parent_class)->size_allocate (widget, allocation);
2253
2254         if (view->sizing_mode == EV_SIZING_FIT_WIDTH ||
2255             view->sizing_mode == EV_SIZING_BEST_FIT) {
2256
2257                 g_signal_emit (view, signals[SIGNAL_ZOOM_INVALID], 0);
2258
2259                 ev_view_size_request (widget, &widget->requisition);
2260         }
2261
2262         view_set_adjustment_values (view, GTK_ORIENTATION_HORIZONTAL);
2263         view_set_adjustment_values (view, GTK_ORIENTATION_VERTICAL);
2264
2265         if (view->document)
2266                 view_update_range_and_current_page (view);
2267
2268         view->pending_scroll = SCROLL_TO_KEEP_POSITION;
2269         view->pending_resize = FALSE;
2270
2271         children = gtk_container_get_children (GTK_CONTAINER (widget));
2272         for (l = children; l && l->data; l = g_list_next (l)) {
2273                 EvFormField   *field;
2274                 EvRectangle    field_area;
2275                 GdkRectangle   view_area;
2276                 GList         *form_field_mapping;
2277                 GtkAllocation  child_allocation;
2278                 GtkRequisition child_requisition;
2279                 GtkWidget     *child = (GtkWidget *)l->data;
2280
2281                 field = g_object_get_data (G_OBJECT (child), "form-field");
2282                 if (!field)
2283                         continue;
2284
2285                 form_field_mapping = ev_pixbuf_cache_get_form_field_mapping (view->pixbuf_cache,
2286                                                                              field->page);
2287                 ev_form_field_mapping_get_area (form_field_mapping, field, &field_area);
2288
2289                 doc_rect_to_view_rect (view, field->page, &field_area, &view_area);
2290                 view_area.x -= view->scroll_x;
2291                 view_area.y -= view->scroll_y;
2292
2293                 gtk_widget_size_request (child, &child_requisition);
2294                 if (child_requisition.width != view_area.width ||
2295                     child_requisition.height != view_area.height)
2296                         gtk_widget_set_size_request (child, view_area.width, view_area.height);
2297
2298                 gtk_container_child_get (GTK_CONTAINER (widget),
2299                                          child,
2300                                          "x", &child_allocation.x,
2301                                          "y", &child_allocation.y,
2302                                          NULL);
2303                 if (child_allocation.x != view_area.x ||
2304                     child_allocation.y != view_area.y) {
2305                         gtk_layout_move (GTK_LAYOUT (widget), child, view_area.x, view_area.y);
2306                 }
2307         }
2308         g_list_free (children);
2309 }
2310
2311 static void
2312 ev_view_realize (GtkWidget *widget)
2313 {
2314         EvView *view = EV_VIEW (widget);
2315
2316         if (GTK_WIDGET_CLASS (ev_view_parent_class)->realize)
2317                 (* GTK_WIDGET_CLASS (ev_view_parent_class)->realize) (widget);
2318
2319         gdk_window_set_events (view->layout.bin_window,
2320                                (gdk_window_get_events (view->layout.bin_window) |
2321                                 GDK_EXPOSURE_MASK |
2322                                 GDK_BUTTON_PRESS_MASK |
2323                                 GDK_BUTTON_RELEASE_MASK |
2324                                 GDK_SCROLL_MASK |
2325                                 GDK_KEY_PRESS_MASK |
2326                                 GDK_POINTER_MOTION_MASK |
2327                                 GDK_POINTER_MOTION_HINT_MASK |
2328                                 GDK_ENTER_NOTIFY_MASK |
2329                                 GDK_LEAVE_NOTIFY_MASK));
2330
2331         if (view->presentation)
2332                 gdk_window_set_background (view->layout.bin_window, &widget->style->black);
2333         else
2334                 gdk_window_set_background (view->layout.bin_window, &widget->style->mid [GTK_STATE_NORMAL]);
2335 }
2336
2337 static gboolean
2338 ev_view_scroll_event (GtkWidget *widget, GdkEventScroll *event)
2339 {
2340         EvView *view = EV_VIEW (widget);
2341         guint state;
2342
2343         state = event->state & gtk_accelerator_get_default_mod_mask ();
2344
2345         if (state == GDK_CONTROL_MASK && view->presentation == FALSE) {
2346                 ev_view_set_sizing_mode (view, EV_SIZING_FREE);
2347
2348                 if (event->direction == GDK_SCROLL_UP ||
2349                     event->direction == GDK_SCROLL_LEFT) {
2350                         if (ev_view_can_zoom_in (view)) {
2351                                 ev_view_zoom_in (view);
2352                         }
2353                 } else {
2354                         if (ev_view_can_zoom_out (view)) {
2355                                 ev_view_zoom_out (view);
2356                         }
2357                 }
2358
2359                 return TRUE;
2360         }
2361
2362         view->jump_to_find_result = FALSE;
2363         /* Shift+Wheel scrolls the in the perpendicular direction */
2364         if (state & GDK_SHIFT_MASK) {
2365                 if (event->direction == GDK_SCROLL_UP)
2366                         event->direction = GDK_SCROLL_LEFT;
2367                 if (event->direction == GDK_SCROLL_LEFT)
2368                         event->direction = GDK_SCROLL_UP;
2369                 if (event->direction == GDK_SCROLL_DOWN)
2370                         event->direction = GDK_SCROLL_RIGHT;
2371                 if (event->direction == GDK_SCROLL_RIGHT)
2372                         event->direction = GDK_SCROLL_DOWN;
2373
2374                 event->state &= ~GDK_SHIFT_MASK;
2375                 state &= ~GDK_SHIFT_MASK;
2376         }
2377
2378         if (state == 0 && view->presentation) {
2379                 switch (event->direction) {
2380                         case GDK_SCROLL_DOWN:
2381                         case GDK_SCROLL_RIGHT:
2382                                 ev_view_next_page (view);
2383                                 break;
2384                         case GDK_SCROLL_UP:
2385                         case GDK_SCROLL_LEFT:
2386                                 ev_view_previous_page (view);
2387                                 break;
2388                 }
2389
2390                 return TRUE;
2391         }
2392
2393         return FALSE;
2394 }
2395
2396 static EvViewSelection *
2397 find_selection_for_page (EvView *view,
2398                          gint    page)
2399 {
2400         GList *list;
2401
2402         for (list = view->selection_info.selections; list != NULL; list = list->next) {
2403                 EvViewSelection *selection;
2404
2405                 selection = (EvViewSelection *) list->data;
2406
2407                 if (selection->page == page)
2408                         return selection;
2409         }
2410
2411         return NULL;
2412 }
2413
2414 static void
2415 draw_end_presentation_page (EvView       *view,
2416                             GdkRectangle *page_area)
2417 {
2418         PangoLayout *layout;
2419         PangoFontDescription *font_desc;
2420         gchar *markup;
2421         const gchar *text = _("End of presentation. Press Escape to exit.");
2422
2423         if (view->presentation_state != EV_PRESENTATION_END)
2424                 return;
2425
2426         layout = gtk_widget_create_pango_layout (GTK_WIDGET (view), NULL);
2427         markup = g_strdup_printf ("<span foreground=\"white\">%s</span>", text);
2428         pango_layout_set_markup (layout, markup, -1);
2429         g_free (markup);
2430
2431         font_desc = pango_font_description_new ();
2432         pango_font_description_set_size (font_desc, 16 * PANGO_SCALE);
2433         pango_layout_set_font_description (layout, font_desc);
2434
2435         gtk_paint_layout (GTK_WIDGET (view)->style,
2436                           view->layout.bin_window,
2437                           GTK_WIDGET_STATE (view),
2438                           FALSE,
2439                           page_area,
2440                           GTK_WIDGET (view),
2441                           NULL,
2442                           page_area->x + 15,
2443                           page_area->y + 15,
2444                           layout);
2445
2446         pango_font_description_free (font_desc);
2447         g_object_unref (layout);
2448 }
2449
2450 static gboolean
2451 ev_view_expose_event (GtkWidget      *widget,
2452                       GdkEventExpose *event)
2453 {
2454         EvView  *view = EV_VIEW (widget);
2455         cairo_t *cr;
2456         gint     i;
2457
2458         if (view->presentation) {
2459                 switch (view->presentation_state) {
2460                         case EV_PRESENTATION_END: {
2461                                 GdkRectangle area = {0};
2462
2463                                 area.width = widget->allocation.width;
2464                                 area.height = widget->allocation.height;
2465
2466                                 draw_end_presentation_page (view, &area);
2467                         }
2468                                 return FALSE;
2469                         case EV_PRESENTATION_BLACK:
2470                         case EV_PRESENTATION_WHITE:
2471                                 return FALSE;
2472                         case EV_PRESENTATION_NORMAL:
2473                         default:
2474                                 break;
2475                 }
2476         } else if (view->loading) {
2477                 GdkRectangle area = {0};
2478
2479                 area.width = widget->allocation.width;
2480                 area.height = widget->allocation.height;
2481
2482                 draw_loading_text (view,
2483                                    &area,
2484                                    &(event->area));
2485         }
2486
2487         if (view->document == NULL)
2488                 return FALSE;
2489
2490         cr = gdk_cairo_create (view->layout.bin_window);
2491
2492         for (i = view->start_page; i <= view->end_page; i++) {
2493                 GdkRectangle page_area;
2494                 GtkBorder border;
2495                 gboolean page_ready = TRUE;
2496
2497                 if (!get_page_extents (view, i, &page_area, &border))
2498                         continue;
2499
2500                 page_area.x -= view->scroll_x;
2501                 page_area.y -= view->scroll_y;
2502
2503                 draw_one_page (view, i, cr, &page_area, &border, &(event->area), &page_ready);
2504
2505                 if (page_ready && EV_IS_DOCUMENT_FIND (view->document) && view->highlight_find_results)
2506                         highlight_find_results (view, i);
2507         }
2508
2509         cairo_destroy (cr);
2510
2511         if (GTK_WIDGET_CLASS (ev_view_parent_class)->expose_event)
2512                 (* GTK_WIDGET_CLASS (ev_view_parent_class)->expose_event) (widget, event);
2513
2514         return FALSE;
2515 }
2516
2517 static gboolean
2518 ev_view_do_popup_menu (EvView *view,
2519                        gdouble x,
2520                        gdouble y)
2521 {
2522         EvLink  *link;
2523         EvImage *image;
2524
2525         image = ev_view_get_image_at_location (view, x, y);
2526         if (image) {
2527                 g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, image);
2528                 return TRUE;
2529         }
2530
2531         link = ev_view_get_link_at_location (view, x, y);
2532         if (link) {
2533                 g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, link);
2534                 return TRUE;
2535         }
2536
2537         g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, NULL);
2538
2539         return TRUE;
2540 }
2541
2542 static gboolean
2543 ev_view_popup_menu (GtkWidget *widget)
2544 {
2545         gint x, y;
2546
2547         gtk_widget_get_pointer (widget, &x, &y);
2548         return ev_view_do_popup_menu (EV_VIEW (widget), x, y);
2549 }
2550
2551 #if GTK_CHECK_VERSION (2, 11, 7)
2552 static void
2553 get_link_area (EvView       *view,
2554                gint          x,
2555                gint          y,
2556                EvLink       *link,
2557                GdkRectangle *area)
2558 {
2559         EvRectangle  ev_rect;
2560         GList       *link_mapping;
2561         gint         page;
2562         gint         x_offset = 0, y_offset = 0;
2563
2564         x += view->scroll_x;
2565         y += view->scroll_y;
2566
2567         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
2568
2569         link_mapping = ev_pixbuf_cache_get_link_mapping (view->pixbuf_cache, page);
2570         ev_link_mapping_get_area (link_mapping, link, &ev_rect);
2571
2572         doc_rect_to_view_rect (view, page, &ev_rect, area);
2573         area->y -= view->scroll_y ;
2574 }
2575
2576 static gboolean
2577 ev_view_query_tooltip (GtkWidget         *widget,
2578                        gint               x,
2579                        gint               y,
2580                        gboolean           keyboard_tip,
2581                        GtkTooltip        *tooltip)
2582 {
2583         EvView *view = EV_VIEW (widget);
2584         EvLink *link;
2585         gchar  *text;
2586
2587         link = ev_view_get_link_at_location (view, x, y);
2588         if (!link)
2589                 return FALSE;
2590
2591         text = tip_from_link (view, link);
2592         if (text && g_utf8_validate (text, -1, NULL)) {
2593                 GdkRectangle link_area;
2594
2595                 get_link_area (view, x, y, link, &link_area);
2596                 gtk_tooltip_set_text (tooltip, text);
2597                 gtk_tooltip_set_tip_area (tooltip, &link_area);
2598         }
2599         g_free (text);
2600
2601         return TRUE;
2602 }
2603 #endif /* GTK_CHECK_VERSION (2, 11, 7) */
2604
2605 static void
2606 start_selection_for_event (EvView         *view,
2607                            GdkEventButton *event)
2608 {
2609         EvSelectionStyle style;
2610
2611         clear_selection (view);
2612
2613         view->selection_info.start.x = event->x + view->scroll_x;
2614         view->selection_info.start.y = event->y + view->scroll_y;
2615
2616         switch (event->type) {
2617                 case GDK_2BUTTON_PRESS:
2618                         style = EV_SELECTION_STYLE_WORD;
2619                         break;
2620                 case GDK_3BUTTON_PRESS:
2621                         style = EV_SELECTION_STYLE_LINE;
2622                         break;
2623                 default:
2624                         style = EV_SELECTION_STYLE_GLYPH;
2625                         break;
2626         }
2627
2628         view->selection_info.style = style;
2629 }
2630
2631 static gboolean
2632 ev_view_button_press_event (GtkWidget      *widget,
2633                             GdkEventButton *event)
2634 {
2635         EvView *view = EV_VIEW (widget);
2636
2637         if (!view->document)
2638                 return FALSE;
2639
2640         if (!GTK_WIDGET_HAS_FOCUS (widget)) {
2641                 gtk_widget_grab_focus (widget);
2642         }
2643
2644         view->pressed_button = event->button;
2645         view->selection_info.in_drag = FALSE;
2646
2647         switch (event->button) {
2648                 case 1: {
2649                         EvImage *image;
2650                         EvFormField *field;
2651
2652                         if (EV_IS_SELECTION (view->document) && view->selection_info.selections) {
2653                                 if (event->type == GDK_3BUTTON_PRESS) {
2654                                         start_selection_for_event (view, event);
2655                                 } else if (location_in_selected_text (view,
2656                                                                event->x + view->scroll_x,
2657                                                                event->y + view->scroll_y)) {
2658                                         view->selection_info.in_drag = TRUE;
2659                                 } else {
2660                                         start_selection_for_event (view, event);
2661                                 }
2662
2663                                 gtk_widget_queue_draw (widget);
2664                         } else if ((field = ev_view_get_form_field_at_location (view, event->x, event->y))) {
2665                                 ev_view_remove_all (view);
2666                                 ev_view_handle_form_field (view, field, event->x, event->y);
2667                         } else if (!location_in_text (view, event->x + view->scroll_x, event->y + view->scroll_y) &&
2668                                    (image = ev_view_get_image_at_location (view, event->x, event->y))) {
2669                                 if (view->image_dnd_info.image)
2670                                         g_object_unref (view->image_dnd_info.image);
2671                                 view->image_dnd_info.image = g_object_ref (image);
2672                                 view->image_dnd_info.in_drag = TRUE;
2673
2674                                 view->image_dnd_info.start.x = event->x + view->scroll_x;
2675                                 view->image_dnd_info.start.y = event->y + view->scroll_y;
2676                         } else {
2677                                 ev_view_remove_all (view);
2678
2679                                 if (EV_IS_SELECTION (view->document))
2680                                         start_selection_for_event (view, event);
2681                         }
2682                 }
2683                         return TRUE;
2684                 case 2:
2685                         /* use root coordinates as reference point because
2686                          * scrolling changes window relative coordinates */
2687                         view->drag_info.start.x = event->x_root;
2688                         view->drag_info.start.y = event->y_root;
2689                         view->drag_info.hadj = gtk_adjustment_get_value (view->hadjustment);
2690                         view->drag_info.vadj = gtk_adjustment_get_value (view->vadjustment);
2691
2692                         ev_view_set_cursor (view, EV_VIEW_CURSOR_DRAG);
2693
2694                         return TRUE;
2695                 case 3:
2696                         return ev_view_do_popup_menu (view, event->x, event->y);
2697         }
2698
2699         return FALSE;
2700 }
2701
2702 static void
2703 ev_view_remove_all (EvView *view)
2704 {
2705         GList *children, *child;
2706
2707         children = gtk_container_get_children (GTK_CONTAINER (view));
2708         for (child = children; child && child->data; child = g_list_next (child)) {
2709                 gtk_container_remove (GTK_CONTAINER (view),
2710                                       GTK_WIDGET (child->data));
2711         }
2712         g_list_free (children);
2713 }
2714
2715 /*** Drag and Drop ***/
2716 static void
2717 ev_view_drag_data_get (GtkWidget        *widget,
2718                        GdkDragContext   *context,
2719                        GtkSelectionData *selection_data,
2720                        guint             info,
2721                        guint             time)
2722 {
2723         EvView *view = EV_VIEW (widget);
2724
2725         switch (info) {
2726                 case TARGET_DND_TEXT:
2727                         if (EV_IS_SELECTION (view->document) &&
2728                             view->selection_info.selections) {
2729                                 gchar *text;
2730
2731                                 text = get_selected_text (view);
2732                                 gtk_selection_data_set_text (selection_data,
2733                                                              text,
2734                                                              strlen (text));
2735                                 g_free (text);
2736                         }
2737                         break;
2738                 case TARGET_DND_IMAGE:
2739                         if (view->image_dnd_info.image) {
2740                                 GdkPixbuf *pixbuf;
2741
2742                                 pixbuf = ev_image_get_pixbuf (view->image_dnd_info.image);
2743                                 gtk_selection_data_set_pixbuf (selection_data, pixbuf);
2744                         }
2745                         break;
2746                 case TARGET_DND_URI:
2747                         if (view->image_dnd_info.image) {
2748                                 const gchar *tmp_uri;
2749                                 gchar      **uris;
2750
2751                                 tmp_uri = ev_image_save_tmp (view->image_dnd_info.image);
2752
2753                                 uris = g_new0 (gchar *, 2);
2754                                 uris[0] = (gchar *)tmp_uri;
2755
2756                                 gtk_selection_data_set_uris (selection_data, uris);
2757
2758                                 /* g_free instead of g_strfreev since tmp_uri is const */
2759                                 g_free (uris);
2760                         }
2761         }
2762 }
2763
2764 static gboolean
2765 ev_view_drag_motion (GtkWidget      *widget,
2766                      GdkDragContext *context,
2767                      gint            x,
2768                      gint            y,
2769                      guint           time)
2770 {
2771         if (gtk_drag_get_source_widget (context) == widget)
2772                 gdk_drag_status (context, 0, time);
2773         else
2774                 gdk_drag_status (context, context->suggested_action, time);
2775
2776         return TRUE;
2777 }
2778
2779 static void
2780 ev_view_drag_data_received (GtkWidget          *widget,
2781                             GdkDragContext     *context,
2782                             gint                x,
2783                             gint                y,
2784                             GtkSelectionData   *selection_data,
2785                             guint               info,
2786                             guint               time)
2787 {
2788         gchar  **uris;
2789         gint     i = 0;
2790         GSList  *uri_list = NULL;
2791
2792         uris = gtk_selection_data_get_uris (selection_data);
2793         if (!uris) {
2794                 gtk_drag_finish (context, FALSE, FALSE, time);
2795                 return;
2796         }
2797
2798         for (i = 0; uris[i]; i++) {
2799                 uri_list = g_slist_prepend (uri_list, (gpointer) uris[i]);
2800         }
2801
2802         ev_application_open_uri_list (EV_APP, uri_list,
2803                                       gtk_widget_get_screen (widget),
2804                                       0);
2805         gtk_drag_finish (context, TRUE, FALSE, time);
2806
2807         g_strfreev (uris);
2808         g_slist_free (uri_list);
2809 }
2810
2811
2812 static gboolean
2813 selection_update_idle_cb (EvView *view)
2814 {
2815         compute_selections (view,
2816                             view->selection_info.style,
2817                             &view->selection_info.start,
2818                             &view->motion);
2819         view->selection_update_id = 0;
2820         return FALSE;
2821 }
2822
2823 static gboolean
2824 selection_scroll_timeout_cb (EvView *view)
2825 {
2826         gint x, y, shift = 0;
2827         GtkWidget *widget = GTK_WIDGET (view);
2828
2829         gtk_widget_get_pointer (widget, &x, &y);
2830
2831         if (y > widget->allocation.height) {
2832                 shift = (y - widget->allocation.height) / 2;
2833         } else if (y < 0) {
2834                 shift = y / 2;
2835         }
2836
2837         if (shift)
2838                 gtk_adjustment_set_value (view->vadjustment,
2839                                           CLAMP (view->vadjustment->value + shift,
2840                                           view->vadjustment->lower,
2841                                           view->vadjustment->upper -
2842                                           view->vadjustment->page_size));
2843
2844         if (x > widget->allocation.width) {
2845                 shift = (x - widget->allocation.width) / 2;
2846         } else if (x < 0) {
2847                 shift = x / 2;
2848         }
2849
2850         if (shift)
2851                 gtk_adjustment_set_value (view->hadjustment,
2852                                           CLAMP (view->hadjustment->value + shift,
2853                                           view->hadjustment->lower,
2854                                           view->hadjustment->upper -
2855                                           view->hadjustment->page_size));
2856
2857         return TRUE;
2858 }
2859
2860 static gboolean
2861 ev_view_motion_notify_event (GtkWidget      *widget,
2862                              GdkEventMotion *event)
2863 {
2864         EvView *view = EV_VIEW (widget);
2865         gint x, y;
2866
2867         if (!view->document)
2868                 return FALSE;
2869
2870         if (event->is_hint || event->window != view->layout.bin_window) {
2871             gtk_widget_get_pointer (widget, &x, &y);
2872         } else {
2873             x = event->x;
2874             y = event->y;
2875         }
2876
2877         if (view->selection_info.in_drag) {
2878                 if (gtk_drag_check_threshold (widget,
2879                                               view->selection_info.start.x,
2880                                               view->selection_info.start.y,
2881                                               x, y)) {
2882                         GtkTargetList *target_list = gtk_target_list_new (NULL, 0);
2883
2884                         gtk_target_list_add_text_targets (target_list, TARGET_DND_TEXT);
2885
2886                         gtk_drag_begin (widget, target_list,
2887                                         GDK_ACTION_COPY,
2888                                         1, (GdkEvent *)event);
2889
2890                         view->selection_info.in_drag = FALSE;
2891
2892                         gtk_target_list_unref (target_list);
2893
2894                         return TRUE;
2895                 }
2896         } else if (view->image_dnd_info.in_drag) {
2897                 if (gtk_drag_check_threshold (widget,
2898                                               view->selection_info.start.x,
2899                                               view->selection_info.start.y,
2900                                               x, y)) {
2901                         GtkTargetList *target_list = gtk_target_list_new (NULL, 0);
2902
2903                         gtk_target_list_add_uri_targets (target_list, TARGET_DND_URI);
2904                         gtk_target_list_add_image_targets (target_list, TARGET_DND_IMAGE, TRUE);
2905
2906                         gtk_drag_begin (widget, target_list,
2907                                         GDK_ACTION_COPY,
2908                                         1, (GdkEvent *)event);
2909
2910                         view->image_dnd_info.in_drag = FALSE;
2911
2912                         gtk_target_list_unref (target_list);
2913
2914                         return TRUE;
2915                 }
2916         }
2917
2918         /* For the Evince 0.4.x release, we limit selection to un-rotated
2919          * documents only.
2920          */
2921         if (view->pressed_button == 1 && view->rotation == 0) {
2922
2923                 /* Schedule timeout to scroll during selection and additionally
2924                  * scroll once to allow arbitrary speed. */
2925                 if (!view->selection_scroll_id)
2926                     view->selection_scroll_id = g_timeout_add (SCROLL_TIME, (GSourceFunc)selection_scroll_timeout_cb, view);
2927                 else
2928                     selection_scroll_timeout_cb (view);
2929
2930                 view->selection_info.in_selection = TRUE;
2931                 view->motion.x = x + view->scroll_x;
2932                 view->motion.y = y + view->scroll_y;
2933
2934                 /* Queue an idle to handle the motion.  We do this because
2935                  * handling any selection events in the motion could be slower
2936                  * than new motion events reach us.  We always put it in the
2937                  * idle to make sure we catch up and don't visibly lag the
2938                  * mouse. */
2939                 if (!view->selection_update_id)
2940                         view->selection_update_id = g_idle_add ((GSourceFunc)selection_update_idle_cb, view);
2941
2942                 return TRUE;
2943         } else if (view->pressed_button == 2) {
2944                 if (!view->drag_info.in_drag) {
2945                         gboolean start;
2946
2947                         start = gtk_drag_check_threshold (widget,
2948                                                           view->drag_info.start.x,
2949                                                           view->drag_info.start.y,
2950                                                           event->x_root,
2951                                                           event->y_root);
2952                         view->drag_info.in_drag = start;
2953                 }
2954
2955                 if (view->drag_info.in_drag) {
2956                         int dx, dy;
2957                         gdouble dhadj_value, dvadj_value;
2958
2959                         dx = event->x_root - view->drag_info.start.x;
2960                         dy = event->y_root - view->drag_info.start.y;
2961
2962                         dhadj_value = view->hadjustment->page_size *
2963                                       (gdouble)dx / widget->allocation.width;
2964                         dvadj_value = view->vadjustment->page_size *
2965                                       (gdouble)dy / widget->allocation.height;
2966
2967                         /* clamp scrolling to visible area */
2968                         gtk_adjustment_set_value (view->hadjustment,
2969                                                   MIN(view->drag_info.hadj - dhadj_value,
2970                                                       view->hadjustment->upper -
2971                                                       view->hadjustment->page_size));
2972                         gtk_adjustment_set_value (view->vadjustment,
2973                                                   MIN(view->drag_info.vadj - dvadj_value,
2974                                                       view->vadjustment->upper -
2975                                                       view->vadjustment->page_size));
2976
2977                         return TRUE;
2978                 }
2979         } else if (view->pressed_button <= 0) {
2980                 ev_view_handle_cursor_over_xy (view, x, y);
2981                 return TRUE;
2982         }
2983
2984         return FALSE;
2985 }
2986
2987 static gboolean
2988 ev_view_button_release_event (GtkWidget      *widget,
2989                               GdkEventButton *event)
2990 {
2991         EvView *view = EV_VIEW (widget);
2992         EvLink *link = NULL;
2993
2994         view->drag_info.in_drag = FALSE;
2995         view->image_dnd_info.in_drag = FALSE;
2996
2997         if (view->pressed_button == 2) {
2998                 ev_view_handle_cursor_over_xy (view, event->x, event->y);
2999         }
3000
3001         if (view->document && view->pressed_button != 3) {
3002                 link = ev_view_get_link_at_location (view, event->x, event->y);
3003         }
3004
3005         view->pressed_button = -1;
3006
3007         if (view->selection_scroll_id) {
3008             g_source_remove (view->selection_scroll_id);
3009             view->selection_scroll_id = 0;
3010         }
3011         if (view->selection_update_id) {
3012             g_source_remove (view->selection_update_id);
3013             view->selection_update_id = 0;
3014         }
3015
3016         if (!view->selection_info.in_selection &&
3017             view->selection_info.style != EV_SELECTION_STYLE_GLYPH) {
3018                 compute_selections (view,
3019                                     view->selection_info.style,
3020                                     &(view->selection_info.start),
3021                                     &(view->selection_info.start));
3022         }
3023
3024         if (view->selection_info.selections) {
3025                 ev_view_update_primary_selection (view);
3026
3027                 if (view->selection_info.in_drag) {
3028                         clear_selection (view);
3029                         gtk_widget_queue_draw (widget);
3030                 }
3031
3032                 view->selection_info.in_drag = FALSE;
3033         } else if (link) {
3034                 if (event->button == 2) {
3035                         EvLinkAction    *action;
3036                         EvLinkActionType type;
3037
3038                         action = ev_link_get_action (link);
3039                         if (!action)
3040                                 return FALSE;
3041
3042                         type = ev_link_action_get_action_type (action);
3043                         if (type == EV_LINK_ACTION_TYPE_GOTO_DEST) {
3044                                 g_signal_emit (view,
3045                                                signals[SIGNAL_EXTERNAL_LINK],
3046                                                0, action);
3047                         }
3048                 } else {
3049                         ev_view_handle_link (view, link);
3050                 }
3051         } else if (view->presentation) {
3052                 switch (event->button) {
3053                         case 1:
3054                                 ev_view_next_page (view);
3055                                 return TRUE;
3056                         case 3:
3057                                 ev_view_previous_page (view);
3058                                 return TRUE;
3059                 }
3060         }
3061
3062         return FALSE;
3063 }
3064
3065 /* Goto Window */
3066 /* Cut and paste from gtkwindow.c */
3067 static void
3068 send_focus_change (GtkWidget *widget,
3069                    gboolean   in)
3070 {
3071         GdkEvent *fevent = gdk_event_new (GDK_FOCUS_CHANGE);
3072
3073         g_object_ref (widget);
3074
3075         if (in)
3076                 GTK_WIDGET_SET_FLAGS (widget, GTK_HAS_FOCUS);
3077         else
3078                 GTK_WIDGET_UNSET_FLAGS (widget, GTK_HAS_FOCUS);
3079
3080         fevent->focus_change.type = GDK_FOCUS_CHANGE;
3081         fevent->focus_change.window = g_object_ref (widget->window);
3082         fevent->focus_change.in = in;
3083
3084         gtk_widget_event (widget, fevent);
3085
3086         g_object_notify (G_OBJECT (widget), "has-focus");
3087
3088         g_object_unref (widget);
3089         gdk_event_free (fevent);
3090 }
3091
3092 static void
3093 ev_view_goto_window_hide (EvView *view)
3094 {
3095         /* send focus-in event */
3096         send_focus_change (view->goto_entry, FALSE);
3097         gtk_widget_hide (view->goto_window);
3098         gtk_entry_set_text (GTK_ENTRY (view->goto_entry), "");
3099 }
3100
3101 static gboolean
3102 ev_view_goto_window_delete_event (GtkWidget   *widget,
3103                                   GdkEventAny *event,
3104                                   EvView      *view)
3105 {
3106         ev_view_goto_window_hide (view);
3107
3108         return TRUE;
3109 }
3110
3111 static gboolean
3112 key_is_numeric (guint keyval)
3113 {
3114         return ((keyval >= GDK_0 && keyval <= GDK_9) ||
3115                 (keyval >= GDK_KP_0 && keyval <= GDK_KP_9));
3116 }
3117
3118 static gboolean
3119 ev_view_goto_window_key_press_event (GtkWidget   *widget,
3120                                      GdkEventKey *event,
3121                                      EvView      *view)
3122 {
3123         switch (event->keyval) {
3124                 case GDK_Escape:
3125                 case GDK_Tab:
3126                 case GDK_KP_Tab:
3127                 case GDK_ISO_Left_Tab:
3128                         ev_view_goto_window_hide (view);
3129                         return TRUE;
3130                 case GDK_Return:
3131                 case GDK_KP_Enter:
3132                 case GDK_ISO_Enter:
3133                 case GDK_BackSpace:
3134                 case GDK_Delete:
3135                         return FALSE;
3136                 default:
3137                         if (!key_is_numeric (event->keyval))
3138                                 return TRUE;
3139         }
3140
3141         return FALSE;
3142 }
3143
3144 static gboolean
3145 ev_view_goto_window_button_press_event (GtkWidget      *widget,
3146                                         GdkEventButton *event,
3147                                         EvView         *view)
3148 {
3149         ev_view_goto_window_hide (view);
3150
3151         return TRUE;
3152 }
3153
3154 static void
3155 ev_view_goto_entry_activate (GtkEntry *entry,
3156                              EvView   *view)
3157 {
3158         const gchar *text;
3159         gint         page;
3160
3161         text = gtk_entry_get_text (entry);
3162         page = atoi (text) - 1;
3163
3164         ev_view_goto_window_hide (view);
3165
3166         if (page >= 0 &&
3167             page < ev_page_cache_get_n_pages (view->page_cache))
3168                 ev_page_cache_set_current_page (view->page_cache, page);
3169 }
3170
3171 static void
3172 ev_view_goto_window_create (EvView *view)
3173 {
3174         GtkWidget *frame, *hbox, *toplevel, *label;
3175
3176         toplevel = gtk_widget_get_toplevel (GTK_WIDGET (view));
3177
3178         if (view->goto_window) {
3179                 if (GTK_WINDOW (toplevel)->group)
3180                         gtk_window_group_add_window (GTK_WINDOW (toplevel)->group,
3181                                                      GTK_WINDOW (view->goto_window));
3182                 else if (GTK_WINDOW (view->goto_window)->group)
3183                         gtk_window_group_remove_window (GTK_WINDOW (view->goto_window)->group,
3184                                                         GTK_WINDOW (view->goto_window));
3185                 return;
3186         }
3187
3188         view->goto_window = gtk_window_new (GTK_WINDOW_POPUP);
3189
3190         if (GTK_WINDOW (toplevel)->group)
3191                 gtk_window_group_add_window (GTK_WINDOW (toplevel)->group,
3192                                              GTK_WINDOW (view->goto_window));
3193
3194         gtk_window_set_modal (GTK_WINDOW (view->goto_window), TRUE);
3195
3196         g_signal_connect (view->goto_window, "delete_event",
3197                           G_CALLBACK (ev_view_goto_window_delete_event),
3198                           view);
3199         g_signal_connect (view->goto_window, "key_press_event",
3200                           G_CALLBACK (ev_view_goto_window_key_press_event),
3201                           view);
3202         g_signal_connect (view->goto_window, "button_press_event",
3203                           G_CALLBACK (ev_view_goto_window_button_press_event),
3204                           view);
3205
3206         frame = gtk_frame_new (NULL);
3207         gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_ETCHED_IN);
3208         gtk_container_add (GTK_CONTAINER (view->goto_window), frame);
3209         gtk_widget_show (frame);
3210
3211         hbox = gtk_hbox_new (FALSE, 0);
3212         gtk_container_set_border_width (GTK_CONTAINER (hbox), 3);
3213         gtk_container_add (GTK_CONTAINER (frame), hbox);
3214         gtk_widget_show (hbox);
3215
3216         label = gtk_label_new(_("Jump to page:"));
3217         gtk_box_pack_start (GTK_BOX (hbox), label, TRUE, TRUE, 3);
3218         gtk_widget_show (label);
3219         gtk_widget_realize (label);
3220
3221         view->goto_entry = gtk_entry_new ();
3222         g_signal_connect (view->goto_entry, "activate",
3223                           G_CALLBACK (ev_view_goto_entry_activate),
3224                           view);
3225         gtk_box_pack_start_defaults (GTK_BOX (hbox), view->goto_entry);
3226         gtk_widget_show (view->goto_entry);
3227         gtk_widget_realize (view->goto_entry);
3228 }
3229
3230 static void
3231 ev_view_goto_entry_grab_focus (EvView *view)
3232 {
3233         GtkWidgetClass *entry_parent_class;
3234
3235         entry_parent_class = g_type_class_peek_parent (GTK_ENTRY_GET_CLASS (view->goto_entry));
3236         (entry_parent_class->grab_focus) (view->goto_entry);
3237
3238         send_focus_change (view->goto_entry, TRUE);
3239 }
3240
3241 static void
3242 ev_view_goto_window_send_key_event (EvView   *view,
3243                                     GdkEvent *event)
3244 {
3245         GdkEventKey *new_event;
3246         GdkScreen   *screen;
3247
3248         /* Move goto window off screen */
3249         screen = gtk_widget_get_screen (GTK_WIDGET (view));
3250         gtk_window_move (GTK_WINDOW (view->goto_window),
3251                          gdk_screen_get_width (screen) + 1,
3252                          gdk_screen_get_height (screen) + 1);
3253         gtk_widget_show (view->goto_window);
3254
3255         new_event = (GdkEventKey *) gdk_event_copy (event);
3256         g_object_unref (new_event->window);
3257         new_event->window = g_object_ref (view->goto_window->window);
3258         gtk_widget_realize (view->goto_window);
3259
3260         gtk_widget_event (view->goto_window, (GdkEvent *)new_event);
3261         gdk_event_free ((GdkEvent *)new_event);
3262         gtk_widget_hide (view->goto_window);
3263 }
3264
3265 static gboolean
3266 ev_view_key_press_event (GtkWidget   *widget,
3267                          GdkEventKey *event)
3268 {
3269         EvView *view = EV_VIEW (widget);
3270         EvPresentationState current;
3271
3272         if (!view->document)
3273                 return FALSE;
3274
3275         if (!view->presentation ||
3276             view->presentation_state == EV_PRESENTATION_END)
3277                 return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
3278
3279
3280         current = view->presentation_state;
3281
3282         switch (event->keyval) {
3283                 case GDK_b:
3284                 case GDK_B:
3285                         view->presentation_state =
3286                                 (view->presentation_state == EV_PRESENTATION_BLACK) ?
3287                                 EV_PRESENTATION_NORMAL : EV_PRESENTATION_BLACK;
3288                         break;
3289                 case GDK_w:
3290                 case GDK_W:
3291                         view->presentation_state =
3292                                 (view->presentation_state == EV_PRESENTATION_WHITE) ?
3293                                 EV_PRESENTATION_NORMAL : EV_PRESENTATION_WHITE;
3294                         break;
3295                 default:
3296                         if (view->presentation_state == EV_PRESENTATION_BLACK ||
3297                             view->presentation_state == EV_PRESENTATION_WHITE) {
3298                                 view->presentation_state = EV_PRESENTATION_NORMAL;
3299                         }
3300         }
3301
3302         if (current == view->presentation_state) {
3303                 if (ev_page_cache_get_n_pages (view->page_cache) > 1 &&
3304                     key_is_numeric (event->keyval)) {
3305                         gint x, y;
3306
3307                         ev_view_goto_window_create (view);
3308                         ev_view_goto_window_send_key_event (view, (GdkEvent *)event);
3309                         gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
3310                         gtk_window_move (GTK_WINDOW (view->goto_window), x, y);
3311                         gtk_widget_show (view->goto_window);
3312                         ev_view_goto_entry_grab_focus (view);
3313
3314                         return TRUE;
3315                 }
3316
3317                 return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
3318         }
3319
3320         switch (view->presentation_state) {
3321                 case EV_PRESENTATION_NORMAL:
3322                 case EV_PRESENTATION_BLACK:
3323                         gdk_window_set_background (view->layout.bin_window,
3324                                                    &widget->style->black);
3325                         break;
3326                 case EV_PRESENTATION_WHITE:
3327                         gdk_window_set_background (view->layout.bin_window,
3328                                                    &widget->style->white);
3329                         break;
3330                 default:
3331                         return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
3332         }
3333
3334         gtk_widget_queue_draw (widget);
3335         return TRUE;
3336 }
3337
3338 static gint
3339 ev_view_focus_in (GtkWidget     *widget,
3340                   GdkEventFocus *event)
3341 {
3342         if (EV_VIEW (widget)->pixbuf_cache)
3343                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
3344         gtk_widget_queue_draw (widget);
3345
3346         return FALSE;
3347 }
3348
3349 static gint
3350 ev_view_focus_out (GtkWidget     *widget,
3351                      GdkEventFocus *event)
3352 {
3353         if (EV_VIEW (widget)->goto_window)
3354                 ev_view_goto_window_hide (EV_VIEW (widget));
3355
3356         if (EV_VIEW (widget)->pixbuf_cache)
3357                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
3358         gtk_widget_queue_draw (widget);
3359
3360         return FALSE;
3361 }
3362
3363 static gboolean
3364 ev_view_leave_notify_event (GtkWidget *widget, GdkEventCrossing   *event)
3365 {
3366         EvView *view = EV_VIEW (widget);
3367
3368         if (view->cursor != EV_VIEW_CURSOR_NORMAL)
3369                 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
3370
3371 #if !GTK_CHECK_VERSION (2, 11, 7)
3372         if (view->link_tooltip) {
3373                 view->hovered_link = NULL;
3374                 ev_tooltip_deactivate (EV_TOOLTIP (view->link_tooltip));
3375         }
3376 #endif
3377
3378         return FALSE;
3379 }
3380
3381 static gboolean
3382 ev_view_enter_notify_event (GtkWidget *widget, GdkEventCrossing   *event)
3383 {
3384         EvView *view = EV_VIEW (widget);
3385
3386         ev_view_handle_cursor_over_xy (view, event->x, event->y);
3387
3388         return FALSE;
3389 }
3390
3391 static void
3392 ev_view_style_set (GtkWidget *widget,
3393                    GtkStyle  *old_style)
3394 {
3395         if (EV_VIEW (widget)->pixbuf_cache)
3396                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
3397
3398         GTK_WIDGET_CLASS (ev_view_parent_class)->style_set (widget, old_style);
3399 }
3400
3401 /*** Drawing ***/
3402
3403 static guint32
3404 ev_gdk_color_to_rgb (const GdkColor *color)
3405 {
3406   guint32 result;
3407   result = (0xff0000 | (color->red & 0xff00));
3408   result <<= 8;
3409   result |= ((color->green & 0xff00) | (color->blue >> 8));
3410   return result;
3411 }
3412
3413 static void
3414 draw_rubberband (GtkWidget *widget, GdkWindow *window,
3415                  const GdkRectangle *rect, guchar alpha)
3416 {
3417         GdkGC *gc;
3418         GdkPixbuf *pixbuf;
3419         GdkColor *fill_color_gdk;
3420         guint fill_color;
3421
3422         fill_color_gdk = gdk_color_copy (&GTK_WIDGET (widget)->style->base[GTK_STATE_SELECTED]);
3423         fill_color = ev_gdk_color_to_rgb (fill_color_gdk) << 8 | alpha;
3424
3425         pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE, 8,
3426                                  rect->width, rect->height);
3427         gdk_pixbuf_fill (pixbuf, fill_color);
3428
3429         gdk_draw_pixbuf (window, NULL, pixbuf,
3430                          0, 0,
3431                          rect->x - EV_VIEW (widget)->scroll_x, rect->y - EV_VIEW (widget)->scroll_y,
3432                          rect->width, rect->height,
3433                          GDK_RGB_DITHER_NONE,
3434                          0, 0);
3435
3436         g_object_unref (pixbuf);
3437
3438         gc = gdk_gc_new (window);
3439         gdk_gc_set_rgb_fg_color (gc, fill_color_gdk);
3440         gdk_draw_rectangle (window, gc, FALSE,
3441                             rect->x - EV_VIEW (widget)->scroll_x, rect->y - EV_VIEW (widget)->scroll_y,
3442                             rect->width - 1,
3443                             rect->height - 1);
3444         g_object_unref (gc);
3445
3446         gdk_color_free (fill_color_gdk);
3447 }
3448
3449
3450 static void
3451 highlight_find_results (EvView *view, int page)
3452 {
3453         EvDocumentFind *find;
3454         int i, results = 0;
3455
3456         find = EV_DOCUMENT_FIND (view->document);
3457
3458         results = ev_document_find_get_n_results (find, page);
3459
3460         for (i = 0; i < results; i++) {
3461                 EvRectangle rectangle;
3462                 GdkRectangle view_rectangle;
3463                 guchar alpha;
3464
3465                 if (i == view->find_result && page == view->current_page) {
3466                         alpha = 0x90;
3467                 } else {
3468                         alpha = 0x20;
3469                 }
3470
3471                 ev_document_find_get_result (find, page, i, &rectangle);
3472                 doc_rect_to_view_rect (view, page, &rectangle, &view_rectangle);
3473                 draw_rubberband (GTK_WIDGET (view), view->layout.bin_window,
3474                                  &view_rectangle, alpha);
3475         }
3476 }
3477
3478 static void
3479 draw_loading_text (EvView       *view,
3480                    GdkRectangle *page_area,
3481                    GdkRectangle *expose_area)
3482 {
3483         cairo_t *cr;
3484         gint     width, height;
3485
3486         /* Don't annoy users with loading messages during presentations.
3487          * FIXME: Temporary "workaround" for
3488          * http://bugzilla.gnome.org/show_bug.cgi?id=320352 */
3489         if (view->presentation)
3490                 return;
3491
3492         if (!view->loading_text) {
3493                 const gchar *loading_text = _("Loading...");
3494                 PangoLayout *layout;
3495                 PangoFontDescription *font_desc;
3496                 PangoRectangle logical_rect;
3497                 gint target_width;
3498                 gdouble real_scale;
3499
3500                 ev_document_fc_mutex_lock ();
3501
3502                 layout = gtk_widget_create_pango_layout (GTK_WIDGET (view), loading_text);
3503
3504                 font_desc = pango_font_description_new ();
3505
3506                 /* We set the font to be 10 points, get the size, and scale appropriately */
3507                 pango_font_description_set_size (font_desc, 10 * PANGO_SCALE);
3508                 pango_layout_set_font_description (layout, font_desc);
3509                 pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
3510
3511                 target_width = MAX (page_area->width / 2, 1);
3512                 real_scale = ((double)target_width / (double) logical_rect.width) * (PANGO_SCALE * 10);
3513                 pango_font_description_set_size (font_desc, (int)real_scale);
3514                 pango_layout_set_font_description (layout, font_desc);
3515                 pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
3516
3517                 view->loading_text = cairo_image_surface_create (CAIRO_FORMAT_ARGB32,
3518                                                                  logical_rect.width,
3519                                                                  logical_rect.height);
3520                 cr = cairo_create (view->loading_text);
3521                 cairo_set_source_rgb (cr,
3522                                       155 / (double)255,
3523                                       155 / (double)255,
3524                                       155 / (double)255);
3525                 pango_cairo_show_layout (cr, layout);
3526                 cairo_destroy (cr);
3527
3528                 pango_font_description_free (font_desc);
3529                 g_object_unref (layout);
3530
3531                 ev_document_fc_mutex_unlock ();
3532         }
3533
3534         width = (page_area->width - cairo_image_surface_get_width (view->loading_text)) / 2;
3535         height = (page_area->height - cairo_image_surface_get_height (view->loading_text)) / 2;
3536
3537         cr = gdk_cairo_create (view->layout.bin_window);
3538         cairo_translate (cr,
3539                          page_area->x + width,
3540                          page_area->y + height);
3541         cairo_set_source_surface (cr, view->loading_text, 0, 0);
3542         cairo_paint (cr);
3543         cairo_destroy (cr);
3544 }
3545
3546 static void
3547 draw_one_page (EvView       *view,
3548                gint          page,
3549                cairo_t      *cr,
3550                GdkRectangle *page_area,
3551                GtkBorder    *border,
3552                GdkRectangle *expose_area,
3553                gboolean     *page_ready)
3554 {
3555         GdkRectangle overlap;
3556         GdkRectangle real_page_area;
3557
3558         g_assert (view->document);
3559
3560         if (! gdk_rectangle_intersect (page_area, expose_area, &overlap))
3561                 return;
3562
3563         /* Render the document itself */
3564         real_page_area = *page_area;
3565
3566         real_page_area.x += border->left;
3567         real_page_area.y += border->top;
3568         real_page_area.width -= (border->left + border->right);
3569         real_page_area.height -= (border->top + border->bottom);
3570         *page_ready = TRUE;
3571
3572         if (!view->presentation) {
3573                 gint current_page;
3574
3575                 current_page = ev_page_cache_get_current_page (view->page_cache);
3576                 ev_document_misc_paint_one_page (view->layout.bin_window,
3577                                                  GTK_WIDGET (view),
3578                                                  page_area, border,
3579                                                  page == current_page);
3580         }
3581
3582         if (gdk_rectangle_intersect (&real_page_area, expose_area, &overlap)) {
3583                 gint             width, height;
3584                 gint             page_width, page_height;
3585                 cairo_surface_t *page_surface = NULL;
3586                 gint             selection_width, selection_height;
3587                 cairo_surface_t *selection_surface = NULL;
3588
3589                 page_surface = ev_pixbuf_cache_get_surface (view->pixbuf_cache, page);
3590
3591                 if (!page_surface) {
3592                         draw_loading_text (view,
3593                                            &real_page_area,
3594                                            expose_area);
3595                         *page_ready = FALSE;
3596
3597                         return;
3598                 }
3599
3600                 ev_page_cache_get_size (view->page_cache,
3601                                         page, view->rotation,
3602                                         view->scale,
3603                                         &width, &height);
3604
3605                 page_width = cairo_image_surface_get_width (page_surface);
3606                 page_height = cairo_image_surface_get_height (page_surface);
3607
3608                 cairo_save (cr);
3609                 cairo_translate (cr, overlap.x, overlap.y);
3610
3611                 if (width != page_width || height != page_height) {
3612                         cairo_pattern_set_filter (cairo_get_source (cr),
3613                                                   CAIRO_FILTER_FAST);
3614                         cairo_scale (cr,
3615                                      (gdouble)width / page_width,
3616                                      (gdouble)height / page_height);
3617                 }
3618
3619                 cairo_surface_set_device_offset (page_surface,
3620                                                  overlap.x - real_page_area.x,
3621                                                  overlap.y - real_page_area.y);
3622                 cairo_set_source_surface (cr, page_surface, 0, 0);
3623                 cairo_paint (cr);
3624                 cairo_restore (cr);
3625
3626                 /* Get the selection pixbuf iff we have something to draw */
3627                 if (find_selection_for_page (view, page) &&
3628                     view->selection_mode == EV_VIEW_SELECTION_TEXT) {
3629                         selection_surface =
3630                                 ev_pixbuf_cache_get_selection_surface (view->pixbuf_cache,
3631                                                                        page,
3632                                                                        view->scale,
3633                                                                        NULL);
3634                 }
3635
3636                 if (!selection_surface) {
3637                         return;
3638                 }
3639
3640                 selection_width = cairo_image_surface_get_width (selection_surface);
3641                 selection_height = cairo_image_surface_get_height (selection_surface);
3642
3643                 cairo_save (cr);
3644                 cairo_translate (cr, overlap.x, overlap.y);
3645
3646                 if (width != selection_width || height != selection_height) {
3647                         cairo_pattern_set_filter (cairo_get_source (cr),
3648                                                   CAIRO_FILTER_FAST);
3649                         cairo_scale (cr,
3650                                      (gdouble)width / selection_width,
3651                                      (gdouble)height / selection_height);
3652                 }
3653
3654                 cairo_surface_set_device_offset (selection_surface,
3655                                                  overlap.x - real_page_area.x,
3656                                                  overlap.y - real_page_area.y);
3657                 cairo_set_source_surface (cr, selection_surface, 0, 0);
3658                 cairo_paint (cr);
3659                 cairo_restore (cr);
3660         }
3661 }
3662
3663 /*** GObject functions ***/
3664
3665 static void
3666 ev_view_finalize (GObject *object)
3667 {
3668         EvView *view = EV_VIEW (object);
3669
3670         g_free (view->find_status);
3671
3672         clear_selection (view);
3673
3674         if (view->image_dnd_info.image)
3675                 g_object_unref (view->image_dnd_info.image);
3676         view->image_dnd_info.image = NULL;
3677
3678         G_OBJECT_CLASS (ev_view_parent_class)->finalize (object);
3679 }
3680
3681 static void
3682 ev_view_destroy (GtkObject *object)
3683 {
3684         EvView *view = EV_VIEW (object);
3685
3686         if (view->document) {
3687                 g_object_unref (view->document);
3688                 view->document = NULL;
3689         }
3690
3691         if (view->pixbuf_cache) {
3692                 g_object_unref (view->pixbuf_cache);
3693                 view->pixbuf_cache = NULL;
3694         }
3695
3696 #if !GTK_CHECK_VERSION (2, 11, 7)
3697         if (view->link_tooltip) {
3698                 gtk_widget_destroy (view->link_tooltip);
3699                 view->link_tooltip = NULL;
3700         }
3701 #endif
3702         if (view->goto_window) {
3703                 gtk_widget_destroy (view->goto_window);
3704                 view->goto_window = NULL;
3705                 view->goto_entry = NULL;
3706         }
3707
3708         if (view->selection_scroll_id) {
3709             g_source_remove (view->selection_scroll_id);
3710             view->selection_scroll_id = 0;
3711         }
3712
3713         if (view->selection_update_id) {
3714             g_source_remove (view->selection_update_id);
3715             view->selection_update_id = 0;
3716         }
3717
3718         if (view->loading_text) {
3719                 cairo_surface_destroy (view->loading_text);
3720                 view->loading_text = NULL;
3721         }
3722
3723         ev_view_presentation_transition_stop (view);
3724
3725         ev_view_set_scroll_adjustments (GTK_LAYOUT (view), NULL, NULL);
3726
3727         GTK_OBJECT_CLASS (ev_view_parent_class)->destroy (object);
3728 }
3729
3730 static void
3731 ev_view_set_property (GObject      *object,
3732                       guint         prop_id,
3733                       const GValue *value,
3734                       GParamSpec   *pspec)
3735 {
3736         EvView *view = EV_VIEW (object);
3737
3738         switch (prop_id) {
3739                 case PROP_CONTINUOUS:
3740                         ev_view_set_continuous (view, g_value_get_boolean (value));
3741                         break;
3742                 case PROP_DUAL_PAGE:
3743                         ev_view_set_dual_page (view, g_value_get_boolean (value));
3744                         break;
3745                 case PROP_FULLSCREEN:
3746                         ev_view_set_fullscreen (view, g_value_get_boolean (value));
3747                         break;
3748                 case PROP_PRESENTATION:
3749                         ev_view_set_presentation (view, g_value_get_boolean (value));
3750                         break;
3751                 case PROP_SIZING_MODE:
3752                         ev_view_set_sizing_mode (view, g_value_get_enum (value));
3753                         break;
3754                 case PROP_ZOOM:
3755                         ev_view_set_zoom (view, g_value_get_double (value), FALSE);
3756                         break;
3757                 case PROP_ROTATION:
3758                         ev_view_set_rotation (view, g_value_get_int (value));
3759                         break;
3760                 default:
3761                         G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
3762         }
3763 }
3764
3765 static AtkObject *
3766 ev_view_get_accessible (GtkWidget *widget)
3767 {
3768         static gboolean first_time = TRUE;
3769
3770         if (first_time) {
3771                 AtkObjectFactory *factory;
3772                 AtkRegistry *registry;
3773                 GType derived_type;
3774                 GType derived_atk_type;
3775
3776                 /*
3777                  * Figure out whether accessibility is enabled by looking at the
3778                  * type of the accessible object which would be created for
3779                  * the parent type of EvView.
3780                  */
3781                 derived_type = g_type_parent (EV_TYPE_VIEW);
3782
3783                 registry = atk_get_default_registry ();
3784                 factory = atk_registry_get_factory (registry,
3785                                                     derived_type);
3786                 derived_atk_type = atk_object_factory_get_accessible_type (factory);
3787                 if (g_type_is_a (derived_atk_type, GTK_TYPE_ACCESSIBLE))
3788                         atk_registry_set_factory_type (registry,
3789                                                        EV_TYPE_VIEW,
3790                                                        ev_view_accessible_factory_get_type ());
3791                 first_time = FALSE;
3792         }
3793         return GTK_WIDGET_CLASS (ev_view_parent_class)->get_accessible (widget);
3794 }
3795
3796 static void
3797 ev_view_get_property (GObject *object,
3798                       guint prop_id,
3799                       GValue *value,
3800                       GParamSpec *pspec)
3801 {
3802         EvView *view = EV_VIEW (object);
3803
3804         switch (prop_id) {
3805                 case PROP_FIND_STATUS:
3806                         g_value_set_string (value, view->find_status);
3807                         break;
3808                 case PROP_CONTINUOUS:
3809                         g_value_set_boolean (value, view->continuous);
3810                         break;
3811                 case PROP_DUAL_PAGE:
3812                         g_value_set_boolean (value, view->dual_page);
3813                         break;
3814                 case PROP_FULLSCREEN:
3815                         g_value_set_boolean (value, view->fullscreen);
3816                         break;
3817                 case PROP_PRESENTATION:
3818                         g_value_set_boolean (value, view->presentation);
3819                         break;
3820                 case PROP_SIZING_MODE:
3821                         g_value_set_enum (value, view->sizing_mode);
3822                         break;
3823                 case PROP_ZOOM:
3824                         g_value_set_double (value, view->scale);
3825                         break;
3826                 case PROP_ROTATION:
3827                         g_value_set_int (value, view->rotation);
3828                         break;
3829                 case PROP_HAS_SELECTION:
3830                         g_value_set_boolean (value,
3831                                              view->selection_info.selections != NULL);
3832                         break;
3833                 default:
3834                         G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
3835         }
3836 }
3837
3838 static void
3839 ev_view_class_init (EvViewClass *class)
3840 {
3841         GObjectClass *object_class = G_OBJECT_CLASS (class);
3842         GtkObjectClass *gtk_object_class = GTK_OBJECT_CLASS (class);
3843         GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
3844         GtkLayoutClass *layout_class = GTK_LAYOUT_CLASS (class);
3845         GtkBindingSet *binding_set;
3846
3847         object_class->finalize = ev_view_finalize;
3848         object_class->set_property = ev_view_set_property;
3849         object_class->get_property = ev_view_get_property;
3850
3851         widget_class->expose_event = ev_view_expose_event;
3852         widget_class->button_press_event = ev_view_button_press_event;
3853         widget_class->motion_notify_event = ev_view_motion_notify_event;
3854         widget_class->button_release_event = ev_view_button_release_event;
3855         widget_class->key_press_event = ev_view_key_press_event;
3856         widget_class->focus_in_event = ev_view_focus_in;
3857         widget_class->focus_out_event = ev_view_focus_out;
3858         widget_class->get_accessible = ev_view_get_accessible;
3859         widget_class->size_request = ev_view_size_request;
3860         widget_class->size_allocate = ev_view_size_allocate;
3861         widget_class->realize = ev_view_realize;
3862         widget_class->scroll_event = ev_view_scroll_event;
3863         widget_class->enter_notify_event = ev_view_enter_notify_event;
3864         widget_class->leave_notify_event = ev_view_leave_notify_event;
3865         widget_class->style_set = ev_view_style_set;
3866         widget_class->drag_data_get = ev_view_drag_data_get;
3867         widget_class->drag_motion = ev_view_drag_motion;
3868         widget_class->drag_data_received = ev_view_drag_data_received;
3869         widget_class->popup_menu = ev_view_popup_menu;
3870 #if GTK_CHECK_VERSION (2, 11, 7)
3871         widget_class->query_tooltip = ev_view_query_tooltip;
3872 #endif
3873
3874         gtk_object_class->destroy = ev_view_destroy;
3875
3876         layout_class->set_scroll_adjustments = ev_view_set_scroll_adjustments;
3877
3878         class->binding_activated = ev_view_scroll;
3879
3880         signals[SIGNAL_BINDING_ACTIVATED] = g_signal_new ("binding_activated",
3881                          G_TYPE_FROM_CLASS (object_class),
3882                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
3883                          G_STRUCT_OFFSET (EvViewClass, binding_activated),
3884                          NULL, NULL,
3885                          ev_marshal_VOID__ENUM_BOOLEAN,
3886                          G_TYPE_NONE, 2,
3887                          GTK_TYPE_SCROLL_TYPE,
3888                          G_TYPE_BOOLEAN);
3889
3890         signals[SIGNAL_ZOOM_INVALID] = g_signal_new ("zoom-invalid",
3891                          G_TYPE_FROM_CLASS (object_class),
3892                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
3893                          G_STRUCT_OFFSET (EvViewClass, zoom_invalid),
3894                          NULL, NULL,
3895                          ev_marshal_VOID__VOID,
3896                          G_TYPE_NONE, 0, G_TYPE_NONE);
3897         signals[SIGNAL_HANDLE_LINK] = g_signal_new ("handle-link",
3898                          G_TYPE_FROM_CLASS (object_class),
3899                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
3900                          G_STRUCT_OFFSET (EvViewClass, handle_link),
3901                          NULL, NULL,
3902                          g_cclosure_marshal_VOID__OBJECT,
3903                          G_TYPE_NONE, 1,
3904                          G_TYPE_OBJECT);
3905         signals[SIGNAL_EXTERNAL_LINK] = g_signal_new ("external-link",
3906                          G_TYPE_FROM_CLASS (object_class),
3907                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
3908                          G_STRUCT_OFFSET (EvViewClass, external_link),
3909                          NULL, NULL,
3910                          g_cclosure_marshal_VOID__OBJECT,
3911                          G_TYPE_NONE, 1,
3912                          G_TYPE_OBJECT);
3913         signals[SIGNAL_POPUP_MENU] = g_signal_new ("popup",
3914                          G_TYPE_FROM_CLASS (object_class),
3915                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
3916                          G_STRUCT_OFFSET (EvViewClass, popup_menu),
3917                          NULL, NULL,
3918                          g_cclosure_marshal_VOID__OBJECT,
3919                          G_TYPE_NONE, 1,
3920                          G_TYPE_OBJECT);
3921
3922
3923         g_object_class_install_property (object_class,
3924                                          PROP_FIND_STATUS,
3925                                          g_param_spec_string ("find-status",
3926                                                               "Find Status Message",
3927                                                               "The find status message",
3928                                                               NULL,
3929                                                               G_PARAM_READABLE));
3930
3931         g_object_class_install_property (object_class,
3932                                          PROP_CONTINUOUS,
3933                                          g_param_spec_boolean ("continuous",
3934                                                                "Continuous",
3935                                                                "Continuous scrolling mode",
3936                                                                TRUE,
3937                                                                G_PARAM_READWRITE));
3938
3939         g_object_class_install_property (object_class,
3940                                          PROP_DUAL_PAGE,
3941                                          g_param_spec_boolean ("dual-page",
3942                                                                "Dual Page",
3943                                                                "Two pages visible at once",
3944                                                                FALSE,
3945                                                                G_PARAM_READWRITE));
3946         g_object_class_install_property (object_class,
3947                                          PROP_FULLSCREEN,
3948                                          g_param_spec_boolean ("fullscreen",
3949                                                                "Full Screen",
3950                                                                "Draw page in a fullscreen fashion",
3951                                                                FALSE,
3952                                                                G_PARAM_READWRITE));
3953         g_object_class_install_property (object_class,
3954                                          PROP_PRESENTATION,
3955                                          g_param_spec_boolean ("presentation",
3956                                                                "Presentation",
3957                                                                "Draw page in presentation mode",
3958                                                                TRUE,
3959                                                                G_PARAM_READWRITE));
3960
3961         g_object_class_install_property (object_class,
3962                                          PROP_SIZING_MODE,
3963                                          g_param_spec_enum ("sizing-mode",
3964                                                             "Sizing Mode",
3965                                                             "Sizing Mode",
3966                                                             EV_TYPE_SIZING_MODE,
3967                                                             EV_SIZING_FIT_WIDTH,
3968                                                             G_PARAM_READWRITE));
3969
3970         g_object_class_install_property (object_class,
3971                                          PROP_ZOOM,
3972                                          g_param_spec_double ("zoom",
3973                                                               "Zoom factor",
3974                                                               "Zoom factor",
3975                                                               0,
3976                                                               G_MAXDOUBLE,
3977                                                               1.0,
3978                                                               G_PARAM_READWRITE));
3979         g_object_class_install_property (object_class,
3980                                          PROP_ROTATION,
3981                                          g_param_spec_double ("rotation",
3982                                                               "Rotation",
3983                                                               "Rotation",
3984                                                               0,
3985                                                               360,
3986                                                               0,
3987                                                               G_PARAM_READWRITE));
3988         g_object_class_install_property (object_class,
3989                                          PROP_HAS_SELECTION,
3990                                          g_param_spec_boolean ("has-selection",
3991                                                                "Has selection",
3992                                                                "The view has selections",
3993                                                                FALSE,
3994                                                                G_PARAM_READABLE));
3995
3996         binding_set = gtk_binding_set_by_class (class);
3997
3998         add_scroll_binding_keypad (binding_set, GDK_Left,  0, EV_SCROLL_STEP_BACKWARD, TRUE);
3999         add_scroll_binding_keypad (binding_set, GDK_Right, 0, EV_SCROLL_STEP_FORWARD,  TRUE);
4000         add_scroll_binding_keypad (binding_set, GDK_Left,  GDK_MOD1_MASK, EV_SCROLL_STEP_DOWN, TRUE);
4001         add_scroll_binding_keypad (binding_set, GDK_Right, GDK_MOD1_MASK, EV_SCROLL_STEP_UP,  TRUE);
4002         add_scroll_binding_keypad (binding_set, GDK_Up,    0, EV_SCROLL_STEP_BACKWARD, FALSE);
4003         add_scroll_binding_keypad (binding_set, GDK_Down,  0, EV_SCROLL_STEP_FORWARD,  FALSE);
4004         add_scroll_binding_keypad (binding_set, GDK_Up,    GDK_MOD1_MASK, EV_SCROLL_STEP_DOWN, FALSE);
4005         add_scroll_binding_keypad (binding_set, GDK_Down,  GDK_MOD1_MASK, EV_SCROLL_STEP_UP,  FALSE);
4006         gtk_binding_entry_add_signal (binding_set, GDK_H, 0, "binding_activated", 2, EV_TYPE_SCROLL_TYPE,
4007                                       EV_SCROLL_STEP_BACKWARD, G_TYPE_BOOLEAN, TRUE);
4008         gtk_binding_entry_add_signal (binding_set, GDK_J, 0, "binding_activated", 2, EV_TYPE_SCROLL_TYPE,
4009                                       EV_SCROLL_STEP_FORWARD, G_TYPE_BOOLEAN, FALSE);
4010         gtk_binding_entry_add_signal (binding_set, GDK_K, 0, "binding_activated", 2, EV_TYPE_SCROLL_TYPE,
4011                                       EV_SCROLL_STEP_BACKWARD, G_TYPE_BOOLEAN, FALSE);
4012         gtk_binding_entry_add_signal (binding_set, GDK_L, 0, "binding_activated", 2, EV_TYPE_SCROLL_TYPE,
4013                                       EV_SCROLL_STEP_FORWARD, G_TYPE_BOOLEAN, TRUE);
4014
4015 }
4016
4017 static void
4018 ev_view_init (EvView *view)
4019 {
4020         GTK_WIDGET_SET_FLAGS (view, GTK_CAN_FOCUS);
4021
4022         view->spacing = 5;
4023         view->scale = 1.0;
4024         view->current_page = 0;
4025         view->pressed_button = -1;
4026         view->cursor = EV_VIEW_CURSOR_NORMAL;
4027         view->drag_info.in_drag = FALSE;
4028         view->selection_info.selections = NULL;
4029         view->selection_info.in_selection = FALSE;
4030         view->selection_info.in_drag = FALSE;
4031         view->selection_mode = EV_VIEW_SELECTION_TEXT;
4032         view->continuous = TRUE;
4033         view->dual_page = FALSE;
4034         view->presentation = FALSE;
4035         view->presentation_state = EV_PRESENTATION_NORMAL;
4036         view->fullscreen = FALSE;
4037         view->sizing_mode = EV_SIZING_FIT_WIDTH;
4038         view->pending_scroll = SCROLL_TO_KEEP_POSITION;
4039         view->jump_to_find_result = TRUE;
4040         view->highlight_find_results = FALSE;
4041
4042         gtk_layout_set_hadjustment (GTK_LAYOUT (view), NULL);
4043         gtk_layout_set_vadjustment (GTK_LAYOUT (view), NULL);
4044
4045         gtk_drag_dest_set (GTK_WIDGET (view),
4046                            GTK_DEST_DEFAULT_ALL,
4047                            view_drop_targets,
4048                            G_N_ELEMENTS (view_drop_targets),
4049                            GDK_ACTION_COPY);
4050 }
4051
4052 /*** Callbacks ***/
4053
4054 static void
4055 find_changed_cb (EvDocument *document, int page, EvView *view)
4056 {
4057         double percent;
4058         int n_pages;
4059
4060         percent = ev_document_find_get_progress
4061                         (EV_DOCUMENT_FIND (view->document));
4062         n_pages = ev_page_cache_get_n_pages (view->page_cache);
4063
4064         if (view->jump_to_find_result == TRUE) {
4065                 jump_to_find_page (view, EV_VIEW_FIND_NEXT, 0);
4066                 jump_to_find_result (view);
4067         }
4068         update_find_status_message (view, percent * n_pages >= n_pages - 1 );
4069         if (view->current_page == page)
4070                 gtk_widget_queue_draw (GTK_WIDGET (view));
4071 }
4072
4073 static void
4074 job_finished_cb (EvPixbufCache *pixbuf_cache,
4075                  GdkRegion     *region,
4076                  EvView        *view)
4077 {
4078         if (region) {
4079                 gdk_window_invalidate_region (view->layout.bin_window,
4080                                               region, TRUE);
4081         } else {
4082                 gtk_widget_queue_draw (GTK_WIDGET (view));
4083         }
4084 }
4085
4086 static void
4087 page_changed_cb (EvPageCache *page_cache,
4088                  int          new_page,
4089                  EvView      *view)
4090 {
4091         if (view->current_page != new_page) {
4092                 gint x, y;
4093
4094                 view->current_page = new_page;
4095                 view->pending_scroll = SCROLL_TO_PAGE_POSITION;
4096
4097                 if (view->presentation)
4098                         ev_view_presentation_transition_start (view);
4099
4100                 gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
4101                 ev_view_handle_cursor_over_xy (view, x, y);
4102
4103                 gtk_widget_queue_resize (GTK_WIDGET (view));
4104         } else {
4105                 gtk_widget_queue_draw (GTK_WIDGET (view));
4106         }
4107
4108         if (EV_IS_DOCUMENT_FIND (view->document)) {
4109                 view->find_result = 0;
4110                 update_find_status_message (view, TRUE);
4111         }
4112 }
4113
4114 static void
4115 on_adjustment_value_changed (GtkAdjustment *adjustment,
4116                              EvView        *view)
4117 {
4118         int dx = 0, dy = 0;
4119         gint x, y;
4120         GList *children, *l;
4121
4122         if (! GTK_WIDGET_REALIZED (view))
4123                 return;
4124
4125         if (view->hadjustment) {
4126                 dx = view->scroll_x - (int) view->hadjustment->value;
4127                 view->scroll_x = (int) view->hadjustment->value;
4128         } else {
4129                 view->scroll_x = 0;
4130         }
4131
4132         if (view->vadjustment) {
4133                 dy = view->scroll_y - (int) view->vadjustment->value;
4134                 view->scroll_y = (int) view->vadjustment->value;
4135         } else {
4136                 view->scroll_y = 0;
4137         }
4138
4139         children = gtk_container_get_children (GTK_CONTAINER (view));
4140         for (l = children; l && l->data; l = g_list_next (l)) {
4141                 gint       child_x, child_y;
4142                 GtkWidget *child = (GtkWidget *)l->data;
4143
4144                 gtk_container_child_get (GTK_CONTAINER (view),
4145                                          child,
4146                                          "x", &child_x,
4147                                          "y", &child_y,
4148                                          NULL);
4149                 gtk_layout_move (GTK_LAYOUT (view), child, child_x + dx, child_y + dy);
4150         }
4151         g_list_free (children);
4152
4153         if (view->pending_resize)
4154                 gtk_widget_queue_draw (GTK_WIDGET (view));
4155         else
4156                 gdk_window_scroll (view->layout.bin_window, dx, dy);
4157
4158         gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
4159         ev_view_handle_cursor_over_xy (view, x, y);
4160
4161         if (view->document)
4162                 view_update_range_and_current_page (view);
4163 }
4164
4165 GtkWidget*
4166 ev_view_new (void)
4167 {
4168         GtkWidget *view;
4169
4170         view = g_object_new (EV_TYPE_VIEW, NULL);
4171
4172         return view;
4173 }
4174
4175 static void
4176 setup_caches (EvView *view)
4177 {
4178         view->page_cache = ev_page_cache_get (view->document);
4179         g_signal_connect (view->page_cache, "page-changed", G_CALLBACK (page_changed_cb), view);
4180         view->pixbuf_cache = ev_pixbuf_cache_new (GTK_WIDGET (view), view->document);
4181         g_signal_connect (view->pixbuf_cache, "job-finished", G_CALLBACK (job_finished_cb), view);
4182         page_changed_cb (view->page_cache,
4183                          ev_page_cache_get_current_page (view->page_cache),
4184                          view);
4185 }
4186
4187 static void
4188 clear_caches (EvView *view)
4189 {
4190         if (view->pixbuf_cache) {
4191                 g_object_unref (view->pixbuf_cache);
4192                 view->pixbuf_cache = NULL;
4193         }
4194
4195         if (view->page_cache) {
4196                 view->page_cache = NULL;
4197         }
4198 }
4199
4200 void
4201 ev_view_set_loading (EvView       *view,
4202                      gboolean      loading)
4203 {
4204         view->loading = loading;
4205         gtk_widget_queue_draw (GTK_WIDGET (view));
4206 }
4207
4208 void
4209 ev_view_set_document (EvView     *view,
4210                       EvDocument *document)
4211 {
4212         g_return_if_fail (EV_IS_VIEW (view));
4213
4214         view->loading = FALSE;
4215
4216         if (document != view->document) {
4217                 clear_caches (view);
4218
4219                 if (view->document) {
4220                         g_signal_handlers_disconnect_by_func (view->document,
4221                                                               find_changed_cb,
4222                                                               view);
4223                         g_object_unref (view->document);
4224                         view->page_cache = NULL;
4225
4226                 }
4227
4228                 view->document = document;
4229                 view->find_result = 0;
4230
4231                 if (view->document) {
4232                         g_object_ref (view->document);
4233                         if (EV_IS_DOCUMENT_FIND (view->document)) {
4234                                 g_signal_connect (view->document,
4235                                                   "find_changed",
4236                                                   G_CALLBACK (find_changed_cb),
4237                                                   view);
4238                         }
4239
4240                         setup_caches (view);
4241                 }
4242
4243                 gtk_widget_queue_resize (GTK_WIDGET (view));
4244         }
4245 }
4246
4247 /*** Zoom and sizing mode ***/
4248
4249 #define EPSILON 0.0000001
4250 void
4251 ev_view_set_zoom (EvView   *view,
4252                   double    factor,
4253                   gboolean  relative)
4254 {
4255         double scale;
4256
4257         if (relative)
4258                 scale = view->scale * factor;
4259         else
4260                 scale = factor;
4261
4262         scale = CLAMP (scale, view->min_scale, view->max_scale);
4263
4264         if (ABS (view->scale - scale) < EPSILON)
4265                 return;
4266
4267         if (view->loading_text) {
4268                 cairo_surface_destroy (view->loading_text);
4269                 view->loading_text = NULL;
4270         }
4271
4272         view->scale = scale;
4273         view->pending_resize = TRUE;
4274
4275         gtk_widget_queue_resize (GTK_WIDGET (view));
4276
4277         g_object_notify (G_OBJECT (view), "zoom");
4278 }
4279
4280 double
4281 ev_view_get_zoom (EvView *view)
4282 {
4283         return view->scale;
4284 }
4285
4286 void
4287 ev_view_set_screen_dpi (EvView  *view,
4288                         gdouble  dpi)
4289 {
4290         g_return_if_fail (EV_IS_VIEW (view));
4291         g_return_if_fail (dpi > 0);
4292
4293         view->dpi = dpi;
4294         view->min_scale = MIN_SCALE * dpi / 72.0;
4295         view->max_scale = MAX_SCALE * dpi / 72.0;
4296 }
4297
4298 gboolean
4299 ev_view_get_continuous (EvView *view)
4300 {
4301         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
4302
4303         return view->continuous;
4304 }
4305
4306 void
4307 ev_view_set_continuous (EvView   *view,
4308                         gboolean  continuous)
4309 {
4310         g_return_if_fail (EV_IS_VIEW (view));
4311
4312         continuous = continuous != FALSE;
4313
4314         if (view->continuous != continuous) {
4315                 view->continuous = continuous;
4316                 view->pending_scroll = SCROLL_TO_PAGE_POSITION;
4317                 gtk_widget_queue_resize (GTK_WIDGET (view));
4318         }
4319
4320         g_object_notify (G_OBJECT (view), "continuous");
4321 }
4322
4323 gboolean
4324 ev_view_get_dual_page (EvView *view)
4325 {
4326         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
4327
4328         return view->dual_page;
4329 }
4330
4331 void
4332 ev_view_set_dual_page (EvView   *view,
4333                        gboolean  dual_page)
4334 {
4335         g_return_if_fail (EV_IS_VIEW (view));
4336
4337         dual_page = dual_page != FALSE;
4338
4339         if (view->dual_page == dual_page)
4340                 return;
4341
4342         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
4343         view->dual_page = dual_page;
4344         /* FIXME: if we're keeping the pixbuf cache around, we should extend the
4345          * preload_cache_size to be 2 if dual_page is set.
4346          */
4347         gtk_widget_queue_resize (GTK_WIDGET (view));
4348
4349         g_object_notify (G_OBJECT (view), "dual-page");
4350 }
4351
4352 void
4353 ev_view_set_fullscreen (EvView   *view,
4354                          gboolean  fullscreen)
4355 {
4356         g_return_if_fail (EV_IS_VIEW (view));
4357
4358         fullscreen = fullscreen != FALSE;
4359
4360         if (view->fullscreen == fullscreen)
4361                 return;
4362
4363         view->fullscreen = fullscreen;
4364         gtk_widget_queue_resize (GTK_WIDGET (view));
4365
4366         g_object_notify (G_OBJECT (view), "fullscreen");
4367 }
4368
4369 gboolean
4370 ev_view_get_fullscreen (EvView *view)
4371 {
4372         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
4373
4374         return view->fullscreen;
4375 }
4376
4377 void
4378 ev_view_set_presentation (EvView   *view,
4379                           gboolean  presentation)
4380 {
4381         g_return_if_fail (EV_IS_VIEW (view));
4382
4383         presentation = presentation != FALSE;
4384
4385         if (view->presentation == presentation)
4386                 return;
4387
4388         if (!presentation)
4389                 view->presentation_state = EV_PRESENTATION_NORMAL;
4390
4391         view->presentation = presentation;
4392         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
4393
4394         if (presentation) {
4395                 view->sizing_mode_saved = view->sizing_mode;
4396                 view->scale_saved = view->scale;
4397                 ev_view_set_sizing_mode (view, EV_SIZING_BEST_FIT);
4398         } else {
4399                 ev_view_set_sizing_mode (view, view->sizing_mode_saved);
4400                 ev_view_set_zoom (view, view->scale_saved, FALSE);
4401         }
4402
4403         gtk_widget_queue_resize (GTK_WIDGET (view));
4404
4405         if (presentation)
4406                 ev_view_presentation_transition_start (view);
4407         else
4408                 ev_view_presentation_transition_stop (view);
4409
4410         if (GTK_WIDGET_REALIZED (view)) {
4411                 if (view->presentation)
4412                         gdk_window_set_background (view->layout.bin_window,
4413                                                    &GTK_WIDGET (view)->style->black);
4414                 else
4415                         gdk_window_set_background (view->layout.bin_window,
4416                                                    &GTK_WIDGET (view)->style->mid [GTK_STATE_NORMAL]);
4417         }
4418
4419         g_object_notify (G_OBJECT (view), "presentation");
4420 }
4421
4422 gboolean
4423 ev_view_get_presentation (EvView *view)
4424 {
4425         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
4426
4427         return view->presentation;
4428 }
4429
4430 static gboolean
4431 transition_next_page (EvView *view)
4432 {
4433         ev_view_next_page (view);
4434
4435         return FALSE;
4436 }
4437
4438 static void
4439 ev_view_presentation_transition_stop (EvView *view)
4440 {
4441         if (view->trans_timeout_id > 0)
4442                 g_source_remove (view->trans_timeout_id);
4443         view->trans_timeout_id = 0;
4444 }
4445
4446 static void
4447 ev_view_presentation_transition_start (EvView *view)
4448 {
4449         gdouble duration;
4450
4451         if (!EV_IS_DOCUMENT_TRANSITION (view->document))
4452                 return;
4453
4454         ev_view_presentation_transition_stop (view);
4455
4456         duration = ev_document_transition_get_page_duration (EV_DOCUMENT_TRANSITION (view->document),
4457                                                              view->current_page);
4458         if (duration > 0) {
4459 #if GLIB_CHECK_VERSION (2, 13, 0)
4460                 view->trans_timeout_id =
4461                         g_timeout_add_seconds (duration,
4462                                                (GSourceFunc) transition_next_page,
4463                                                view);
4464 #else
4465                 view->trans_timeout_id =
4466                         g_timeout_add (duration * 1000,
4467                                        (GSourceFunc) transition_next_page,
4468                                        view);
4469 #endif
4470         }
4471 }
4472
4473 void
4474 ev_view_set_sizing_mode (EvView       *view,
4475                          EvSizingMode  sizing_mode)
4476 {
4477         g_return_if_fail (EV_IS_VIEW (view));
4478
4479         if (view->sizing_mode == sizing_mode)
4480                 return;
4481
4482         view->sizing_mode = sizing_mode;
4483         gtk_widget_queue_resize (GTK_WIDGET (view));
4484
4485         g_object_notify (G_OBJECT (view), "sizing-mode");
4486 }
4487
4488 EvSizingMode
4489 ev_view_get_sizing_mode (EvView *view)
4490 {
4491         g_return_val_if_fail (EV_IS_VIEW (view), EV_SIZING_FREE);
4492
4493         return view->sizing_mode;
4494 }
4495
4496 gboolean
4497 ev_view_can_zoom_in (EvView *view)
4498 {
4499         return view->scale * ZOOM_IN_FACTOR <= view->max_scale;
4500 }
4501
4502 gboolean
4503 ev_view_can_zoom_out (EvView *view)
4504 {
4505         return view->scale * ZOOM_OUT_FACTOR >= view->min_scale;
4506 }
4507
4508 void
4509 ev_view_zoom_in (EvView *view)
4510 {
4511         g_return_if_fail (view->sizing_mode == EV_SIZING_FREE);
4512
4513         if (view->presentation)
4514                 return;
4515
4516         view->pending_scroll = SCROLL_TO_CENTER;
4517         ev_view_set_zoom (view, ZOOM_IN_FACTOR, TRUE);
4518 }
4519
4520 void
4521 ev_view_zoom_out (EvView *view)
4522 {
4523         g_return_if_fail (view->sizing_mode == EV_SIZING_FREE);
4524
4525         if (view->presentation)
4526                 return;
4527
4528         view->pending_scroll = SCROLL_TO_CENTER;
4529         ev_view_set_zoom (view, ZOOM_OUT_FACTOR, TRUE);
4530 }
4531
4532 void
4533 ev_view_rotate_right (EvView *view)
4534 {
4535         int rotation = view->rotation + 90;
4536
4537         if (rotation >= 360) {
4538                 rotation -= 360;
4539         }
4540
4541         ev_view_set_rotation (view, rotation);
4542 }
4543
4544 void
4545 ev_view_rotate_left (EvView *view)
4546 {
4547         int rotation = view->rotation - 90;
4548
4549         if (rotation < 0) {
4550                 rotation += 360;
4551         }
4552
4553         ev_view_set_rotation (view, rotation);
4554 }
4555
4556 void
4557 ev_view_set_rotation (EvView *view, int rotation)
4558 {
4559         view->rotation = rotation;
4560
4561         if (view->pixbuf_cache) {
4562                 ev_pixbuf_cache_clear (view->pixbuf_cache);
4563                 gtk_widget_queue_resize (GTK_WIDGET (view));
4564         }
4565
4566         if (rotation != 0)
4567                 clear_selection (view);
4568
4569         g_object_notify (G_OBJECT (view), "rotation");
4570 }
4571
4572 int
4573 ev_view_get_rotation (EvView *view)
4574 {
4575         return view->rotation;
4576 }
4577
4578 static double
4579 zoom_for_size_fit_width (int doc_width,
4580                          int doc_height,
4581                          int target_width,
4582                          int target_height,
4583                          int vsb_width)
4584 {
4585         double scale;
4586
4587         scale = (double)target_width / doc_width;
4588
4589         if (doc_height * scale > target_height)
4590                 scale = (double) (target_width - vsb_width) / doc_width;
4591
4592         return scale;
4593 }
4594
4595 static double
4596 zoom_for_size_fit_height (int doc_width,
4597                           int doc_height,
4598                           int target_width,
4599                           int target_height,
4600                           int vsb_height)
4601 {
4602         double scale;
4603
4604         scale = (double)target_height / doc_height;
4605
4606         if (doc_width * scale > target_width)
4607                 scale = (double) (target_height - vsb_height) / doc_height;
4608
4609         return scale;
4610 }
4611
4612 static double
4613 zoom_for_size_best_fit (int doc_width,
4614                         int doc_height,
4615                         int target_width,
4616                         int target_height,
4617                         int vsb_width,
4618                         int hsb_width)
4619 {
4620         double w_scale;
4621         double h_scale;
4622
4623         w_scale = (double)target_width / doc_width;
4624         h_scale = (double)target_height / doc_height;
4625
4626         if (doc_height * w_scale > target_height)
4627                 w_scale = (double) (target_width - vsb_width) / doc_width;
4628         if (doc_width * h_scale > target_width)
4629                 h_scale = (double) (target_height - hsb_width) / doc_height;
4630
4631         return MIN (w_scale, h_scale);
4632 }
4633
4634
4635 static void
4636 ev_view_zoom_for_size_presentation (EvView *view,
4637                                     int     width,
4638                                     int     height)
4639 {
4640         int doc_width, doc_height;
4641         gdouble scale;
4642
4643         ev_page_cache_get_size (view->page_cache,
4644                                 view->current_page,
4645                                 view->rotation,
4646                                 1.0,
4647                                 &doc_width,
4648                                 &doc_height);
4649         scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, 0, 0);
4650         ev_view_set_zoom (view, scale, FALSE);
4651 }
4652
4653 static void
4654 ev_view_zoom_for_size_continuous_and_dual_page (EvView *view,
4655                            int     width,
4656                            int     height,
4657                            int     vsb_width,
4658                            int     hsb_height)
4659 {
4660         int doc_width, doc_height;
4661         GtkBorder border;
4662         gdouble scale;
4663
4664         ev_page_cache_get_max_width (view->page_cache,
4665                                      view->rotation,
4666                                      1.0,
4667                                      &doc_width);
4668         ev_page_cache_get_max_height (view->page_cache,
4669                                       view->rotation,
4670                                       1.0,
4671                                       &doc_height);
4672         compute_border (view, doc_width, doc_height, &border);
4673
4674         doc_width = doc_width * 2;
4675         width -= (2 * (border.left + border.right) + 3 * view->spacing);
4676         height -= (border.top + border.bottom + 2 * view->spacing - 1);
4677
4678         /* FIXME: We really need to calculate the overall height here, not the
4679          * page height.  We assume there's always a vertical scrollbar for
4680          * now.  We need to fix this. */
4681         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
4682                 scale = zoom_for_size_fit_width (doc_width, doc_height, width - vsb_width, height, 0);
4683         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
4684                 scale = zoom_for_size_best_fit (doc_width, doc_height, width - vsb_width, height, 0, hsb_height);
4685         else
4686                 g_assert_not_reached ();
4687
4688         ev_view_set_zoom (view, scale, FALSE);
4689 }
4690
4691 static void
4692 ev_view_zoom_for_size_continuous (EvView *view,
4693                                   int     width,
4694                                   int     height,
4695                                   int     vsb_width,
4696                                   int     hsb_height)
4697 {
4698         int doc_width, doc_height;
4699         GtkBorder border;
4700         gdouble scale;
4701
4702         ev_page_cache_get_max_width (view->page_cache,
4703                                      view->rotation,
4704                                      1.0,
4705                                      &doc_width);
4706         ev_page_cache_get_max_height (view->page_cache,
4707                                       view->rotation,
4708                                       1.0,
4709                                       &doc_height);
4710         compute_border (view, doc_width, doc_height, &border);
4711
4712         width -= (border.left + border.right + 2 * view->spacing);
4713         height -= (border.top + border.bottom + 2 * view->spacing - 1);
4714
4715         /* FIXME: We really need to calculate the overall height here, not the
4716          * page height.  We assume there's always a vertical scrollbar for
4717          * now.  We need to fix this. */
4718         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
4719                 scale = zoom_for_size_fit_width (doc_width, doc_height, width - vsb_width, height, 0);
4720         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
4721                 scale = zoom_for_size_best_fit (doc_width, doc_height, width - vsb_width, height, 0, hsb_height);
4722         else
4723                 g_assert_not_reached ();
4724
4725         ev_view_set_zoom (view, scale, FALSE);
4726 }
4727
4728 static void
4729 ev_view_zoom_for_size_dual_page (EvView *view,
4730                                  int     width,
4731                                  int     height,
4732                                  int     vsb_width,
4733                                  int     hsb_height)
4734 {
4735         GtkBorder border;
4736         gint doc_width, doc_height;
4737         gdouble scale;
4738         gint other_page;
4739
4740         other_page = view->current_page ^ 1;
4741
4742         /* Find the largest of the two. */
4743         ev_page_cache_get_size (view->page_cache,
4744                                 view->current_page,
4745                                 view->rotation,
4746                                 1.0,
4747                                 &doc_width, &doc_height);
4748
4749         if (other_page < ev_page_cache_get_n_pages (view->page_cache)) {
4750                 gint width_2, height_2;
4751                 ev_page_cache_get_size (view->page_cache,
4752                                         other_page,
4753                                         view->rotation,
4754                                         1.0,
4755                                         &width_2, &height_2);
4756                 if (width_2 > doc_width)
4757                         doc_width = width_2;
4758                 if (height_2 > doc_height)
4759                         doc_height = height_2;
4760         }
4761         compute_border (view, doc_width, doc_height, &border);
4762
4763         doc_width = doc_width * 2;
4764         width -= ((border.left + border.right)* 2 + 3 * view->spacing);
4765         height -= (border.top + border.bottom + 2 * view->spacing);
4766
4767         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
4768                 scale = zoom_for_size_fit_width (doc_width, doc_height, width, height, vsb_width);
4769         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
4770                 scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, vsb_width, hsb_height);
4771         else
4772                 g_assert_not_reached ();
4773
4774         ev_view_set_zoom (view, scale, FALSE);
4775 }
4776
4777 static void
4778 ev_view_zoom_for_size_single_page (EvView *view,
4779                                    int     width,
4780                                    int     height,
4781                                    int     vsb_width,
4782                                    int     hsb_height)
4783 {
4784         int doc_width, doc_height;
4785         GtkBorder border;
4786         gdouble scale;
4787
4788         ev_page_cache_get_size (view->page_cache,
4789                                 view->current_page,
4790                                 view->rotation,
4791                                 1.0,
4792                                 &doc_width,
4793                                 &doc_height);
4794         /* Get an approximate border */
4795         compute_border (view, width, height, &border);
4796
4797         width -= (border.left + border.right + 2 * view->spacing);
4798         height -= (border.top + border.bottom + 2 * view->spacing);
4799
4800         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
4801                 scale = zoom_for_size_fit_width (doc_width, doc_height, width, height, vsb_width);
4802         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
4803                 scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, vsb_width, hsb_height);
4804         else
4805                 g_assert_not_reached ();
4806
4807         ev_view_set_zoom (view, scale, FALSE);
4808 }
4809
4810 static void
4811 ev_view_set_zoom_for_size (EvView *view,
4812                            int     width,
4813                            int     height,
4814                            int     vsb_width,
4815                            int     hsb_height)
4816 {
4817         g_return_if_fail (EV_IS_VIEW (view));
4818         g_return_if_fail (view->sizing_mode == EV_SIZING_FIT_WIDTH ||
4819                           view->sizing_mode == EV_SIZING_BEST_FIT);
4820         g_return_if_fail (width >= 0);
4821         g_return_if_fail (height >= 0);
4822
4823         if (view->document == NULL)
4824                 return;
4825
4826         if (view->presentation)
4827                 ev_view_zoom_for_size_presentation (view, width, height);
4828         else if (view->continuous && view->dual_page)
4829                 ev_view_zoom_for_size_continuous_and_dual_page (view, width, height, vsb_width, hsb_height);
4830         else if (view->continuous)
4831                 ev_view_zoom_for_size_continuous (view, width, height, vsb_width, hsb_height);
4832         else if (view->dual_page)
4833                 ev_view_zoom_for_size_dual_page (view, width, height, vsb_width, hsb_height);
4834         else
4835                 ev_view_zoom_for_size_single_page (view, width, height, vsb_width, hsb_height);
4836 }
4837
4838 /*** Find ***/
4839 static void
4840 update_find_status_message (EvView *view, gboolean this_page)
4841 {
4842         char *message;
4843
4844         if (this_page) {
4845                 int results;
4846
4847                 results = ev_document_find_get_n_results
4848                                 (EV_DOCUMENT_FIND (view->document),
4849                                  view->current_page);
4850                 /* TRANS: Sometimes this could be better translated as
4851                    "%d hit(s) on this page".  Therefore this string
4852                    contains plural cases. */
4853                 message = g_strdup_printf (ngettext ("%d found on this page",
4854                                                      "%d found on this page",
4855                                                      results),
4856                                            results);
4857         } else {
4858                 double percent;
4859
4860                 percent = ev_document_find_get_progress
4861                                 (EV_DOCUMENT_FIND (view->document));
4862                 message = g_strdup_printf (_("%3d%% remaining to search"),
4863                                            (int) ((1.0 - percent) * 100));
4864
4865         }
4866         ev_view_set_find_status (view, message);
4867         g_free (message);
4868 }
4869
4870 const char *
4871 ev_view_get_find_status (EvView *view)
4872 {
4873         g_return_val_if_fail (EV_IS_VIEW (view), NULL);
4874
4875         return view->find_status;
4876 }
4877
4878 static void
4879 ev_view_set_find_status (EvView *view, const char *message)
4880 {
4881         g_return_if_fail (EV_IS_VIEW (view));
4882
4883         g_free (view->find_status);
4884         view->find_status = g_strdup (message);
4885         g_object_notify (G_OBJECT (view), "find-status");
4886 }
4887
4888 static void
4889 jump_to_find_result (EvView *view)
4890 {
4891         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
4892         EvRectangle rect;
4893         GdkRectangle view_rect;
4894         int n_results;
4895         int page = view->current_page;
4896
4897         n_results = ev_document_find_get_n_results (find, page);
4898
4899         if (n_results > 0  && view->find_result < n_results) {
4900                 ev_document_find_get_result
4901                         (find, page, view->find_result, &rect);
4902
4903                 doc_rect_to_view_rect (view, page, &rect, &view_rect);
4904                 ensure_rectangle_is_visible (view, &view_rect);
4905         }
4906 }
4907
4908 /**
4909  * jump_to_find_page
4910  * @view: #EvView instance
4911  * @direction: Direction to look
4912  * @shift: Shift from current page
4913  *
4914  * Jumps to the first page that has occurences of searched word.
4915  * Uses a direction where to look and a shift from current page.
4916  *
4917  */
4918 static void
4919 jump_to_find_page (EvView *view, EvViewFindDirection direction, gint shift)
4920 {
4921         int n_pages, i;
4922
4923         n_pages = ev_page_cache_get_n_pages (view->page_cache);
4924
4925         for (i = 0; i < n_pages; i++) {
4926                 int has_results;
4927                 int page;
4928
4929                 if (direction == EV_VIEW_FIND_NEXT)
4930                         page = view->current_page + i;
4931                 else
4932                         page = view->current_page - i;
4933                 page += shift;
4934
4935                 if (page >= n_pages) {
4936                         page = page - n_pages;
4937                 }
4938                 if (page < 0)
4939                         page = page + n_pages;
4940
4941                 has_results = ev_document_find_page_has_results
4942                                 (EV_DOCUMENT_FIND (view->document), page);
4943                 if (has_results == -1) {
4944                         break;
4945                 } else if (has_results == 1) {
4946                         ev_page_cache_set_current_page (view->page_cache, page);
4947                         break;
4948                 }
4949         }
4950 }
4951
4952 gboolean
4953 ev_view_can_find_next (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 = 0; i < n_pages; i++) {
4961                         if (ev_document_find_get_n_results (find, i) > 0) {
4962                                 return TRUE;
4963                         }
4964                 }
4965         }
4966
4967         return FALSE;
4968 }
4969
4970 void
4971 ev_view_find_next (EvView *view)
4972 {
4973         int n_results, n_pages;
4974         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
4975
4976         n_results = ev_document_find_get_n_results (find, view->current_page);
4977
4978         n_pages = ev_page_cache_get_n_pages (view->page_cache);
4979
4980         view->find_result++;
4981
4982         if (view->find_result >= n_results) {
4983
4984                 view->find_result = 0;
4985                 jump_to_find_page (view, EV_VIEW_FIND_NEXT, 1);
4986                 jump_to_find_result (view);
4987         } else {
4988                 jump_to_find_result (view);
4989                 gtk_widget_queue_draw (GTK_WIDGET (view));
4990         }
4991 }
4992
4993 gboolean
4994 ev_view_can_find_previous (EvView *view)
4995 {
4996         if (EV_IS_DOCUMENT_FIND (view->document)) {
4997                 EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
4998                 int i, n_pages;
4999
5000                 n_pages = ev_page_cache_get_n_pages (view->page_cache);
5001                 for (i = n_pages - 1; i >= 0; i--) {
5002                         if (ev_document_find_get_n_results (find, i) > 0) {
5003                                 return TRUE;
5004                         }
5005                 }
5006         }
5007
5008         return FALSE;
5009 }
5010 void
5011 ev_view_find_previous (EvView *view)
5012 {
5013         int n_results, n_pages;
5014         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
5015         EvPageCache *page_cache;
5016
5017         page_cache = ev_page_cache_get (view->document);
5018
5019         n_results = ev_document_find_get_n_results (find, view->current_page);
5020
5021         n_pages = ev_page_cache_get_n_pages (page_cache);
5022
5023         view->find_result--;
5024
5025         if (view->find_result < 0) {
5026
5027                 jump_to_find_page (view, EV_VIEW_FIND_PREV, -1);
5028                 view->find_result = ev_document_find_get_n_results (find, view->current_page) - 1;
5029                 jump_to_find_result (view);
5030         } else {
5031                 jump_to_find_result (view);
5032                 gtk_widget_queue_draw (GTK_WIDGET (view));
5033         }
5034 }
5035
5036 void ev_view_search_changed (EvView *view)
5037 {
5038         /* search string has changed, focus on new search result */
5039         view->jump_to_find_result = TRUE;
5040 }
5041
5042 void ev_view_set_highlight_search (EvView *view, gboolean value)
5043 {
5044         view->highlight_find_results = value;
5045         gtk_widget_queue_draw (GTK_WIDGET (view));
5046 }
5047
5048 /*** Selections ***/
5049
5050 /* compute_new_selection_rect/text calculates the area currently selected by
5051  * view_rect.  each handles a different mode;
5052  */
5053 static GList *
5054 compute_new_selection_rect (EvView       *view,
5055                             GdkPoint     *start,
5056                             GdkPoint     *stop)
5057 {
5058         GdkRectangle view_rect;
5059         int n_pages, i;
5060         GList *list = NULL;
5061
5062         g_assert (view->selection_mode == EV_VIEW_SELECTION_RECTANGLE);
5063
5064         view_rect.x = MIN (start->x, stop->x);
5065         view_rect.y = MIN (start->y, stop->y);
5066         view_rect.width = MAX (start->x, stop->x) - view_rect.x;
5067         view_rect.width = MAX (start->y, stop->y) - view_rect.y;
5068
5069         n_pages = ev_page_cache_get_n_pages (view->page_cache);
5070
5071         for (i = 0; i < n_pages; i++) {
5072                 GdkRectangle page_area;
5073                 GtkBorder border;
5074
5075                 if (get_page_extents (view, i, &page_area, &border)) {
5076                         GdkRectangle overlap;
5077
5078                         if (gdk_rectangle_intersect (&page_area, &view_rect, &overlap)) {
5079                                 EvViewSelection *selection;
5080
5081                                 selection = g_new0 (EvViewSelection, 1);
5082                                 selection->page = i;
5083                                 view_rect_to_doc_rect (view, &overlap, &page_area,
5084                                                        &(selection->rect));
5085
5086                                 list = g_list_append (list, selection);
5087                         }
5088                 }
5089         }
5090
5091         return list;
5092 }
5093
5094 static gboolean
5095 gdk_rectangle_point_in (GdkRectangle *rectangle,
5096                         GdkPoint     *point)
5097 {
5098         return rectangle->x <= point->x &&
5099                 rectangle->y <= point->y &&
5100                 point->x < rectangle->x + rectangle->width &&
5101                 point->y < rectangle->y + rectangle->height;
5102 }
5103
5104 static GList *
5105 compute_new_selection_text (EvView          *view,
5106                             EvSelectionStyle style,
5107                             GdkPoint        *start,
5108                             GdkPoint        *stop)
5109 {
5110         int n_pages, i, first, last;
5111         GList *list = NULL;
5112         EvViewSelection *selection;
5113         gint width, height;
5114         int start_page, end_page;
5115
5116         g_assert (view->selection_mode == EV_VIEW_SELECTION_TEXT);
5117
5118         n_pages = ev_page_cache_get_n_pages (view->page_cache);
5119
5120         /* First figure out the range of pages the selection
5121          * affects. */
5122         first = n_pages;
5123         last = 0;
5124         if (view->continuous) {
5125                 start_page = 0;
5126                 end_page = n_pages;
5127         } else if (view->dual_page) {
5128                 start_page = view->start_page;
5129                 end_page = view->end_page + 1;
5130         } else {
5131                 start_page = view->current_page;
5132                 end_page = view->current_page + 1;
5133         }
5134
5135         for (i = start_page; i < end_page; i++) {
5136                 GdkRectangle page_area;
5137                 GtkBorder border;
5138
5139                 get_page_extents (view, i, &page_area, &border);
5140                 if (gdk_rectangle_point_in (&page_area, start) ||
5141                     gdk_rectangle_point_in (&page_area, stop)) {
5142                         if (first == n_pages)
5143                                 first = i;
5144                         last = i;
5145                 }
5146
5147         }
5148
5149         /* Now create a list of EvViewSelection's for the affected
5150          * pages.  This could be an empty list, a list of just one
5151          * page or a number of pages.*/
5152         for (i = first; i < last + 1; i++) {
5153                 GdkRectangle page_area;
5154                 GtkBorder border;
5155                 GdkPoint *point;
5156
5157                 ev_page_cache_get_size (view->page_cache, i,
5158                                         view->rotation,
5159                                         1.0, &width, &height);
5160
5161                 selection = g_new0 (EvViewSelection, 1);
5162                 selection->page = i;
5163                 selection->style = style;
5164                 selection->rect.x1 = selection->rect.y1 = 0;
5165                 selection->rect.x2 = width;
5166                 selection->rect.y2 = height;
5167
5168                 get_page_extents (view, i, &page_area, &border);
5169
5170                 if (gdk_rectangle_point_in (&page_area, start))
5171                         point = start;
5172                 else
5173                         point = stop;
5174
5175                 if (i == first)
5176                         view_point_to_doc_point (view, point, &page_area,
5177                                                  &selection->rect.x1,
5178                                                  &selection->rect.y1);
5179
5180                 /* If the selection is contained within just one page,
5181                  * make sure we don't write 'start' into both points
5182                  * in selection->rect. */
5183                 if (first == last)
5184                         point = stop;
5185
5186                 if (i == last)
5187                         view_point_to_doc_point (view, point, &page_area,
5188                                                  &selection->rect.x2,
5189                                                  &selection->rect.y2);
5190
5191                 list = g_list_append (list, selection);
5192         }
5193
5194         return list;
5195 }
5196
5197 /* This function takes the newly calculated list, and figures out which regions
5198  * have changed.  It then queues a redraw approporiately.
5199  */
5200 static void
5201 merge_selection_region (EvView *view,
5202                         GList  *new_list)
5203 {
5204         GList *old_list;
5205         GList *new_list_ptr, *old_list_ptr;
5206
5207         /* Update the selection */
5208         old_list = ev_pixbuf_cache_get_selection_list (view->pixbuf_cache);
5209         g_list_foreach (view->selection_info.selections, (GFunc)selection_free, NULL);
5210         view->selection_info.selections = new_list;
5211         ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, new_list);
5212         g_object_notify (G_OBJECT (view), "has-selection");
5213
5214         new_list_ptr = new_list;
5215         old_list_ptr = old_list;
5216
5217         while (new_list_ptr || old_list_ptr) {
5218                 EvViewSelection *old_sel, *new_sel;
5219                 int cur_page;
5220                 GdkRegion *region = NULL;
5221
5222                 new_sel = (new_list_ptr) ? (new_list_ptr->data) : NULL;
5223                 old_sel = (old_list_ptr) ? (old_list_ptr->data) : NULL;
5224
5225                 /* Assume that the lists are in order, and we run through them
5226                  * comparing them, one page at a time.  We come out with the
5227                  * first page we see. */
5228                 if (new_sel && old_sel) {
5229                         if (new_sel->page < old_sel->page) {
5230                                 new_list_ptr = new_list_ptr->next;
5231                                 old_sel = NULL;
5232                         } else if (new_sel->page > old_sel->page) {
5233                                 old_list_ptr = old_list_ptr->next;
5234                                 new_sel = NULL;
5235                         } else {
5236                                 new_list_ptr = new_list_ptr->next;
5237                                 old_list_ptr = old_list_ptr->next;
5238                         }
5239                 } else if (new_sel) {
5240                         new_list_ptr = new_list_ptr->next;
5241                 } else if (old_sel) {
5242                         old_list_ptr = old_list_ptr->next;
5243                 }
5244
5245                 g_assert (new_sel || old_sel);
5246
5247                 /* is the page we're looking at on the screen?*/
5248                 cur_page = new_sel ? new_sel->page : old_sel->page;
5249                 if (cur_page < view->start_page || cur_page > view->end_page)
5250                         continue;
5251
5252                 /* seed the cache with a new page.  We are going to need the new
5253                  * region too. */
5254                 if (new_sel) {
5255                         GdkRegion *tmp_region = NULL;
5256
5257                         ev_pixbuf_cache_get_selection_surface (view->pixbuf_cache,
5258                                                                cur_page,
5259                                                                view->scale,
5260                                                                &tmp_region);
5261
5262                         if (tmp_region) {
5263                                 new_sel->covered_region = gdk_region_copy (tmp_region);
5264                         }
5265                 }
5266
5267                 /* Now we figure out what needs redrawing */
5268                 if (old_sel && new_sel) {
5269                         if (old_sel->covered_region && new_sel->covered_region) {
5270                                 /* We only want to redraw the areas that have
5271                                  * changed, so we xor the old and new regions
5272                                  * and redraw if it's different */
5273                                 region = gdk_region_copy (old_sel->covered_region);
5274                                 gdk_region_xor (region, new_sel->covered_region);
5275                                 if (gdk_region_empty (region)) {
5276                                         gdk_region_destroy (region);
5277                                         region = NULL;
5278                                 }
5279                         } else if (old_sel->covered_region) {
5280                                 region = gdk_region_copy (old_sel->covered_region);
5281                         } else if (new_sel->covered_region) {
5282                                 region = gdk_region_copy (new_sel->covered_region);
5283                         }
5284                 } else if (old_sel && !new_sel) {
5285                         if (old_sel->covered_region && !gdk_region_empty (old_sel->covered_region)) {
5286                                 region = gdk_region_copy (old_sel->covered_region);
5287                         }
5288                 } else if (!old_sel && new_sel) {
5289                         if (new_sel->covered_region && !gdk_region_empty (new_sel->covered_region)) {
5290                                 region = gdk_region_copy (new_sel->covered_region);
5291                         }
5292                 } else {
5293                         g_assert_not_reached ();
5294                 }
5295
5296                 /* Redraw the damaged region! */
5297                 if (region) {
5298                         GdkRectangle page_area;
5299                         GtkBorder border;
5300
5301                         /* I don't know why but the region is smaller
5302                          * than expected. This hack fixes it, I guess
5303                          * 10 pixels more won't hurt
5304                          */
5305                         gdk_region_shrink (region, -5, -5);
5306
5307                         get_page_extents (view, cur_page, &page_area, &border);
5308                         gdk_region_offset (region,
5309                                            page_area.x + border.left - view->scroll_x,
5310                                            page_area.y + border.top - view->scroll_y);
5311                         gdk_window_invalidate_region (view->layout.bin_window, region, TRUE);
5312                         gdk_region_destroy (region);
5313                 }
5314         }
5315
5316         /* Free the old list, now that we're done with it. */
5317         g_list_foreach (old_list, (GFunc) selection_free, NULL);
5318 }
5319
5320 static void
5321 compute_selections (EvView          *view,
5322                     EvSelectionStyle style,
5323                     GdkPoint        *start,
5324                     GdkPoint        *stop)
5325 {
5326         GList *list;
5327
5328         if (view->selection_mode == EV_VIEW_SELECTION_RECTANGLE)
5329                 list = compute_new_selection_rect (view, start, stop);
5330         else
5331                 list = compute_new_selection_text (view, style, start, stop);
5332         merge_selection_region (view, list);
5333 }
5334
5335 /* Free's the selection.  It's up to the caller to queue redraws if needed.
5336  */
5337 static void
5338 selection_free (EvViewSelection *selection)
5339 {
5340         if (selection->covered_region)
5341                 gdk_region_destroy (selection->covered_region);
5342         g_free (selection);
5343 }
5344
5345 static void
5346 clear_selection (EvView *view)
5347 {
5348         g_list_foreach (view->selection_info.selections, (GFunc)selection_free, NULL);
5349         view->selection_info.selections = NULL;
5350         view->selection_info.in_selection = FALSE;
5351         if (view->pixbuf_cache)
5352                 ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, NULL);
5353         g_object_notify (G_OBJECT (view), "has-selection");
5354 }
5355
5356 void
5357 ev_view_select_all (EvView *view)
5358 {
5359         GList *selections = NULL;
5360         int n_pages, i;
5361
5362         /* Disable selection on rotated pages for the 0.4.0 series */
5363         if (view->rotation != 0)
5364                 return;
5365
5366         clear_selection (view);
5367
5368         n_pages = ev_page_cache_get_n_pages (view->page_cache);
5369         for (i = 0; i < n_pages; i++) {
5370                 int width, height;
5371                 EvViewSelection *selection;
5372
5373                 ev_page_cache_get_size (view->page_cache,
5374                                         i,
5375                                         view->rotation,
5376                                         1.0, &width, &height);
5377
5378                 selection = g_new0 (EvViewSelection, 1);
5379                 selection->page = i;
5380                 selection->style = EV_SELECTION_STYLE_GLYPH;
5381                 selection->rect.x1 = selection->rect.y1 = 0;
5382                 selection->rect.x2 = width;
5383                 selection->rect.y2 = height;
5384
5385                 selections = g_list_append (selections, selection);
5386         }
5387
5388         merge_selection_region (view, selections);
5389         gtk_widget_queue_draw (GTK_WIDGET (view));
5390 }
5391
5392 gboolean
5393 ev_view_get_has_selection (EvView *view)
5394 {
5395         return view->selection_info.selections != NULL;
5396 }
5397
5398 static char *
5399 get_selected_text (EvView *view)
5400 {
5401         GString *text;
5402         GList *l;
5403         gchar *normalized_text;
5404         EvRenderContext *rc;
5405
5406         text = g_string_new (NULL);
5407         rc = ev_render_context_new (view->rotation, 1, view->scale);
5408
5409         ev_document_doc_mutex_lock ();
5410
5411         for (l = view->selection_info.selections; l != NULL; l = l->next) {
5412                 EvViewSelection *selection = (EvViewSelection *)l->data;
5413                 gchar *tmp;
5414
5415                 ev_render_context_set_page (rc, selection->page);
5416                 tmp = ev_selection_get_selected_text (EV_SELECTION (view->document),
5417                                                       rc, selection->style,
5418                                                       &(selection->rect));
5419
5420                 g_string_append (text, tmp);
5421                 g_free (tmp);
5422         }
5423
5424         ev_document_doc_mutex_unlock ();
5425
5426         g_object_unref (rc);
5427
5428         normalized_text = g_utf8_normalize (text->str, text->len, G_NORMALIZE_NFKC);
5429         g_string_free (text, TRUE);
5430         return normalized_text;
5431 }
5432
5433 void
5434 ev_view_copy (EvView *ev_view)
5435 {
5436         GtkClipboard *clipboard;
5437         char *text;
5438
5439         if (!EV_IS_SELECTION (ev_view->document))
5440                 return;
5441
5442         text = get_selected_text (ev_view);
5443         clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view),
5444                                               GDK_SELECTION_CLIPBOARD);
5445         gtk_clipboard_set_text (clipboard, text, -1);
5446         g_free (text);
5447 }
5448
5449 static void
5450 ev_view_primary_get_cb (GtkClipboard     *clipboard,
5451                         GtkSelectionData *selection_data,
5452                         guint             info,
5453                         gpointer          data)
5454 {
5455         EvView *ev_view = EV_VIEW (data);
5456         char *text;
5457
5458         if (!EV_IS_SELECTION (ev_view->document))
5459                 return;
5460
5461         text = get_selected_text (ev_view);
5462         if (text) {
5463                 gtk_selection_data_set_text (selection_data, text, -1);
5464                 g_free (text);
5465         }
5466 }
5467
5468 static void
5469 ev_view_primary_clear_cb (GtkClipboard *clipboard,
5470                           gpointer      data)
5471 {
5472         EvView *view = EV_VIEW (data);
5473
5474         clear_selection (view);
5475 }
5476
5477 static void
5478 ev_view_update_primary_selection (EvView *ev_view)
5479 {
5480         GtkClipboard *clipboard;
5481
5482         clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view),
5483                                               GDK_SELECTION_PRIMARY);
5484
5485         if (ev_view->selection_info.selections) {
5486                 if (!gtk_clipboard_set_with_owner (clipboard,
5487                                                    clipboard_targets,
5488                                                    G_N_ELEMENTS (clipboard_targets),
5489                                                    ev_view_primary_get_cb,
5490                                                    ev_view_primary_clear_cb,
5491                                                    G_OBJECT (ev_view)))
5492                         ev_view_primary_clear_cb (clipboard, ev_view);
5493         } else {
5494                 if (gtk_clipboard_get_owner (clipboard) == G_OBJECT (ev_view))
5495                         gtk_clipboard_clear (clipboard);
5496         }
5497 }
5498
5499 /*** Cursor operations ***/
5500
5501 static GdkCursor *
5502 ev_view_create_invisible_cursor(void)
5503 {
5504        GdkBitmap *empty;
5505        GdkColor black = { 0, 0, 0, 0 };
5506        static char bits[] = { 0x00 };
5507
5508        empty = gdk_bitmap_create_from_data (NULL, bits, 1, 1);
5509
5510        return gdk_cursor_new_from_pixmap (empty, empty, &black, &black, 0, 0);
5511 }
5512
5513 static void
5514 ev_view_set_cursor (EvView *view, EvViewCursor new_cursor)
5515 {
5516         GdkCursor *cursor = NULL;
5517         GdkDisplay *display;
5518         GtkWidget *widget;
5519
5520         if (view->cursor == new_cursor) {
5521                 return;
5522         }
5523
5524         widget = gtk_widget_get_toplevel (GTK_WIDGET (view));
5525         display = gtk_widget_get_display (widget);
5526         view->cursor = new_cursor;
5527
5528         switch (new_cursor) {
5529                 case EV_VIEW_CURSOR_NORMAL:
5530                         gdk_window_set_cursor (view->layout.bin_window, NULL);
5531                         break;
5532                 case EV_VIEW_CURSOR_IBEAM:
5533                         cursor = gdk_cursor_new_for_display (display, GDK_XTERM);
5534                         break;
5535                 case EV_VIEW_CURSOR_LINK:
5536                         cursor = gdk_cursor_new_for_display (display, GDK_HAND2);
5537                         break;
5538                 case EV_VIEW_CURSOR_WAIT:
5539                         cursor = gdk_cursor_new_for_display (display, GDK_WATCH);
5540                         break;
5541                 case EV_VIEW_CURSOR_HIDDEN:
5542                         cursor = ev_view_create_invisible_cursor ();
5543                         break;
5544                 case EV_VIEW_CURSOR_DRAG:
5545                         cursor = gdk_cursor_new_for_display (display, GDK_FLEUR);
5546                         break;
5547         }
5548
5549         if (cursor) {
5550                 gdk_window_set_cursor (view->layout.bin_window, cursor);
5551                 gdk_cursor_unref (cursor);
5552                 gdk_flush();
5553         }
5554 }
5555
5556 void
5557 ev_view_hide_cursor (EvView *view)
5558 {
5559        ev_view_set_cursor (view, EV_VIEW_CURSOR_HIDDEN);
5560 }
5561
5562 void
5563 ev_view_show_cursor (EvView *view)
5564 {
5565        ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
5566 }
5567
5568 static void
5569 ev_view_reset_presentation_state (EvView *view)
5570 {
5571         if (!view->presentation ||
5572             view->presentation_state == EV_PRESENTATION_NORMAL)
5573                 return;
5574
5575         view->presentation_state = EV_PRESENTATION_NORMAL;
5576         gdk_window_set_background (view->layout.bin_window,
5577                                    &GTK_WIDGET (view)->style->black);
5578         gtk_widget_queue_draw (GTK_WIDGET (view));
5579 }
5580
5581 gboolean
5582 ev_view_next_page (EvView *view)
5583 {
5584         int page, n_pages;
5585
5586         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
5587
5588         if (!view->page_cache)
5589                 return FALSE;
5590
5591         if (view->presentation &&
5592             (view->presentation_state == EV_PRESENTATION_BLACK ||
5593              view->presentation_state == EV_PRESENTATION_WHITE)) {
5594                 ev_view_reset_presentation_state (view);
5595                 return FALSE;
5596         }
5597
5598         ev_view_presentation_transition_stop (view);
5599         ev_view_reset_presentation_state (view);
5600
5601         page = ev_page_cache_get_current_page (view->page_cache);
5602         n_pages = ev_page_cache_get_n_pages (view->page_cache);
5603
5604         if (view->dual_page && !view->presentation)
5605                 page = page + 2;
5606         else
5607                 page = page + 1;
5608
5609         if (page < n_pages) {
5610                 ev_page_cache_set_current_page (view->page_cache, page);
5611                 return TRUE;
5612         } else if (view->presentation && page == n_pages) {
5613                 view->presentation_state = EV_PRESENTATION_END;
5614                 gtk_widget_queue_draw (GTK_WIDGET (view));
5615                 return TRUE;
5616         } else if (view->dual_page && page == n_pages) {
5617                 ev_page_cache_set_current_page (view->page_cache, page - 1);
5618                 return TRUE;
5619         } else {
5620                 return FALSE;
5621         }
5622 }
5623
5624 gboolean
5625 ev_view_previous_page (EvView *view)
5626 {
5627         int page;
5628
5629         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
5630
5631         if (!view->page_cache)
5632                 return FALSE;
5633
5634         if (view->presentation &&
5635             view->presentation_state == EV_PRESENTATION_END) {
5636                 ev_view_reset_presentation_state (view);
5637                 return TRUE;
5638         }
5639
5640         if (view->presentation &&
5641             (view->presentation_state == EV_PRESENTATION_BLACK ||
5642              view->presentation_state == EV_PRESENTATION_WHITE)) {
5643                 ev_view_reset_presentation_state (view);
5644                 return FALSE;
5645         }
5646
5647         ev_view_reset_presentation_state (view);
5648
5649         page = ev_page_cache_get_current_page (view->page_cache);
5650
5651         if (view->dual_page && !view->presentation)
5652                 page = page - 2;
5653         else
5654                 page = page - 1;
5655
5656         if (page >= 0) {
5657                 ev_page_cache_set_current_page (view->page_cache, page);
5658                 return TRUE;
5659         } else if (ev_view_get_dual_page (view) && page == -1) {
5660                 ev_page_cache_set_current_page (view->page_cache, 0);
5661                 return TRUE;
5662         } else {
5663                 return FALSE;
5664         }
5665 }
5666
5667 /*** Enum description for usage in signal ***/
5668
5669 GType
5670 ev_sizing_mode_get_type (void)
5671 {
5672   static GType etype = 0;
5673   if (etype == 0) {
5674     static const GEnumValue values[] = {
5675       { EV_SIZING_FIT_WIDTH, "EV_SIZING_FIT_WIDTH", "fit-width" },
5676       { EV_SIZING_BEST_FIT, "EV_SIZING_BEST_FIT", "best-fit" },
5677       { EV_SIZING_FREE, "EV_SIZING_FREE", "free" },
5678       { 0, NULL, NULL }
5679     };
5680     etype = g_enum_register_static ("EvSizingMode", values);
5681   }
5682   return etype;
5683 }
5684
5685 GType
5686 ev_scroll_type_get_type (void)
5687 {
5688   static GType etype = 0;
5689   if (etype == 0) {
5690     static const GEnumValue values[] = {
5691       { EV_SCROLL_PAGE_FORWARD, "EV_SCROLL_PAGE_FORWARD", "scroll-page-forward" },
5692       { EV_SCROLL_PAGE_BACKWARD, "EV_SCROLL_PAGE_BACKWARD", "scroll-page-backward" },
5693       { EV_SCROLL_STEP_FORWARD, "EV_SCROLL_STEP_FORWARD", "scroll-step-forward" },
5694       { EV_SCROLL_STEP_FORWARD, "EV_SCROLL_STEP_FORWARD", "scroll-step-forward" },
5695       { EV_SCROLL_STEP_UP, "EV_SCROLL_STEP_UP", "scroll-step-up" },
5696       { EV_SCROLL_STEP_DOWN, "EV_SCROLL_STEP_DOWN", "scroll-step-down" },
5697       { 0, NULL, NULL }
5698     };
5699     etype = g_enum_register_static ("EvScrollType", values);
5700   }
5701   return etype;
5702 }
5703
5704 void
5705 ev_view_update_view_size (EvView *view, GtkScrolledWindow * scrolled_window)
5706 {
5707         int width, height;
5708         GtkRequisition vsb_requisition;
5709         GtkRequisition hsb_requisition;
5710         int scrollbar_spacing;
5711
5712         /* Calculate the width available for the content */
5713         width  = GTK_WIDGET (scrolled_window)->allocation.width;
5714         height = GTK_WIDGET (scrolled_window)->allocation.height;
5715
5716         if (gtk_scrolled_window_get_shadow_type (scrolled_window) == GTK_SHADOW_IN
5717             && view) {
5718                 width -=  2 * GTK_WIDGET(view)->style->xthickness;
5719                 height -= 2 * GTK_WIDGET(view)->style->ythickness;
5720         }
5721
5722         gtk_widget_size_request (scrolled_window->vscrollbar, &vsb_requisition);
5723         gtk_widget_size_request (scrolled_window->hscrollbar, &hsb_requisition);
5724         gtk_widget_style_get (GTK_WIDGET (scrolled_window),
5725                               "scrollbar_spacing",
5726                               &scrollbar_spacing,
5727                               NULL);
5728
5729         if (EV_IS_VIEW(view)) {
5730                 ev_view_set_zoom_for_size (EV_VIEW (view),
5731                                            MAX (1, width),
5732                                            MAX (1, height),
5733                                            vsb_requisition.width + scrollbar_spacing,
5734                                            hsb_requisition.height + scrollbar_spacing);
5735         }
5736 }