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 #include <libgnomevfs/gnome-vfs-utils.h>
  31
  32 #include "ev-marshal.h"
  33 #include "ev-view.h"
  34 #include "ev-view-private.h"
  35 #include "ev-utils.h"
  36 #include "ev-selection.h"
  37 #include "ev-document-links.h"
  38 #include "ev-document-find.h"
  39 #include "ev-document-transition.h"
  40 #include "ev-document-misc.h"
  41 #include "ev-debug.h"
  42 #include "ev-job-queue.h"
  43 #include "ev-page-cache.h"
  44 #include "ev-pixbuf-cache.h"
  45 #include "ev-tooltip.h"
  46
  47 #define EV_VIEW_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass), EV_TYPE_VIEW, EvViewClass))
  48 #define EV_IS_VIEW_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), EV_TYPE_VIEW))
  49 #define EV_VIEW_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj), EV_TYPE_VIEW, EvViewClass))
  50
  51
  52 enum {
  53         PROP_0,
  54         PROP_STATUS,
  55         PROP_FIND_STATUS,
  56         PROP_CONTINUOUS,
  57         PROP_DUAL_PAGE,
  58         PROP_FULLSCREEN,
  59         PROP_PRESENTATION,
  60         PROP_SIZING_MODE,
  61         PROP_ZOOM,
  62         PROP_ROTATION,
  63         PROP_HAS_SELECTION,
  64 };
  65
  66 enum {
  67         SIGNAL_BINDING_ACTIVATED,
  68         SIGNAL_ZOOM_INVALID,
  69         SIGNAL_EXTERNAL_LINK,
  70         SIGNAL_POPUP_MENU,
  71         N_SIGNALS,
  72 };
  73
  74 enum {
  75         TARGET_STRING,
  76         TARGET_TEXT,
  77         TARGET_COMPOUND_TEXT,
  78         TARGET_UTF8_STRING,
  79         TARGET_TEXT_BUFFER_CONTENTS
  80 };
  81
  82 static const GtkTargetEntry targets[] = {
  83         { "STRING", 0, TARGET_STRING },
  84         { "TEXT",   0, TARGET_TEXT },
  85         { "COMPOUND_TEXT", 0, TARGET_COMPOUND_TEXT },
  86         { "UTF8_STRING", 0, TARGET_UTF8_STRING },
  87 };
  88
  89 static guint signals[N_SIGNALS];
  90
  91 typedef enum {
  92         EV_VIEW_FIND_NEXT,
  93         EV_VIEW_FIND_PREV
  94 } EvViewFindDirection;
  95
  96 #define ZOOM_IN_FACTOR  1.2
  97 #define ZOOM_OUT_FACTOR (1.0/ZOOM_IN_FACTOR)
  98
  99 #define MIN_SCALE 0.05409
 100 #define MAX_SCALE 4.0
 101
 102 #define SCROLL_TIME 150
 103
 104 /*** Scrolling ***/
 105 static void       scroll_to_current_page                     (EvView *view,
 106                                                               GtkOrientation orientation);
 107 static void       ev_view_set_scroll_adjustments             (EvView             *view,
 108                                                               GtkAdjustment      *hadjustment,
 109                                                               GtkAdjustment      *vadjustment);
 110 static void       view_update_range_and_current_page         (EvView             *view);
 111 static void       set_scroll_adjustment                      (EvView             *view,
 112                                                               GtkOrientation      orientation,
 113                                                               GtkAdjustment      *adjustment);
 114 static void       ev_view_set_scroll_adjustments             (EvView             *view,
 115                                                               GtkAdjustment      *hadjustment,
 116                                                               GtkAdjustment      *vadjustment);
 117 static void       add_scroll_binding_keypad                  (GtkBindingSet      *binding_set,
 118                                                               guint               keyval,
 119                                                               GdkModifierType modifiers,
 120                                                               EvScrollType       scroll,
 121                                                               gboolean            horizontal);
 122 static void       ensure_rectangle_is_visible                (EvView             *view,
 123                                                               GdkRectangle       *rect);
 124
 125 /*** Geometry computations ***/
 126 static void       compute_border                             (EvView             *view,
 127                                                               int                 width,
 128                                                               int                 height,
 129                                                               GtkBorder          *border);
 130 static void       get_page_y_offset                          (EvView *view,
 131                                                               int page,
 132                                                               double zoom,
 133                                                               int *y_offset);
 134 static gboolean   get_page_extents                           (EvView             *view,
 135                                                               gint                page,
 136                                                               GdkRectangle       *page_area,
 137                                                               GtkBorder          *border);
 138 static void       view_rect_to_doc_rect                      (EvView             *view,
 139                                                               GdkRectangle       *view_rect,
 140                                                               GdkRectangle       *page_area,
 141                                                               EvRectangle        *doc_rect);
 142 static void       doc_rect_to_view_rect                      (EvView             *view,
 143                                                               int                 page,
 144                                                               EvRectangle        *doc_rect,
 145                                                               GdkRectangle       *view_rect);
 146 static void       find_page_at_location                      (EvView             *view,
 147                                                               gdouble             x,
 148                                                               gdouble             y,
 149                                                               gint               *page,
 150                                                               gint               *x_offset,
 151                                                               gint               *y_offset);
 152 static gboolean  doc_point_to_view_point                     (EvView       *view,
 153                                                               int           page,
 154                                                               EvPoint      *doc_point,
 155                                                               GdkPoint     *view_point);
 156 /*** Hyperrefs ***/
 157 static EvLink *   ev_view_get_link_at_location               (EvView  *view,
 158                                                               gdouble  x,
 159                                                               gdouble  y);
 160 static char*      tip_from_link                              (EvView             *view,
 161                                                               EvLink             *link);
 162 static void       handle_link_over_xy                        (EvView *view,
 163                                                               gint x,
 164                                                               gint y);
 165 /*** GtkWidget implementation ***/
 166 static void       ev_view_size_request_continuous_dual_page  (EvView             *view,
 167                                                               GtkRequisition     *requisition);
 168 static void       ev_view_size_request_continuous            (EvView             *view,
 169                                                               GtkRequisition     *requisition);
 170 static void       ev_view_size_request_dual_page             (EvView             *view,
 171                                                               GtkRequisition     *requisition);
 172 static void       ev_view_size_request_single_page           (EvView             *view,
 173                                                               GtkRequisition     *requisition);
 174 static void       ev_view_size_request                       (GtkWidget          *widget,
 175                                                               GtkRequisition     *requisition);
 176 static void       ev_view_size_allocate                      (GtkWidget          *widget,
 177                                                               GtkAllocation      *allocation);
 178 static void       ev_view_realize                            (GtkWidget          *widget);
 179 static gboolean   ev_view_scroll_event                       (GtkWidget          *widget,
 180                                                               GdkEventScroll     *event);
 181 static gboolean   ev_view_expose_event                       (GtkWidget          *widget,
 182                                                               GdkEventExpose     *event);
 183 static gboolean   ev_view_popup_menu                         (GtkWidget          *widget);
 184 static gboolean   ev_view_button_press_event                 (GtkWidget          *widget,
 185                                                               GdkEventButton     *event);
 186 static gboolean   ev_view_motion_notify_event                (GtkWidget          *widget,
 187                                                               GdkEventMotion     *event);
 188 static gboolean   ev_view_button_release_event               (GtkWidget          *widget,
 189                                                               GdkEventButton     *event);
 190 static gboolean   ev_view_enter_notify_event                 (GtkWidget          *widget,
 191                                                               GdkEventCrossing   *event);
 192 static gboolean   ev_view_leave_notify_event                 (GtkWidget          *widget,
 193                                                               GdkEventCrossing   *event);
 194 static void       ev_view_style_set                          (GtkWidget          *widget,
 195                                                               GtkStyle           *old_style);
 196
 197 static AtkObject *ev_view_get_accessible                     (GtkWidget *widget);
 198
 199 /*** Drawing ***/
 200 static guint32    ev_gdk_color_to_rgb                        (const GdkColor     *color);
 201 static void       draw_rubberband                            (GtkWidget          *widget,
 202                                                               GdkWindow          *window,
 203                                                               const GdkRectangle *rect,
 204                                                               guchar              alpha);
 205 static void       highlight_find_results                     (EvView             *view,
 206                                                               int                 page);
 207 static void       draw_one_page                              (EvView             *view,
 208                                                               gint                page,
 209                                                               GdkRectangle       *page_area,
 210                                                               GtkBorder          *border,
 211                                                               GdkRectangle       *expose_area,
 212                                                               gboolean           *page_ready);
 213 static void       draw_loading_text                          (EvView             *view,
 214                                                               GdkRectangle       *page_area,
 215                                                               GdkRectangle       *expose_area);
 216
 217 /*** Callbacks ***/
 218 static void       find_changed_cb                            (EvDocument         *document,
 219                                                               int                 page,
 220                                                               EvView             *view);
 221 static void       job_finished_cb                            (EvPixbufCache      *pixbuf_cache,
 222                                                               EvView             *view);
 223 static void       page_changed_cb                            (EvPageCache        *page_cache,
 224                                                               int                 new_page,
 225                                                               EvView             *view);
 226 static void       on_adjustment_value_changed                (GtkAdjustment      *adjustment,
 227                                                               EvView             *view);
 228
 229 /*** GObject ***/
 230 static void       ev_view_finalize                           (GObject            *object);
 231 static void       ev_view_destroy                            (GtkObject          *object);
 232 static void       ev_view_set_property                       (GObject            *object,
 233                                                               guint               prop_id,
 234                                                               const GValue       *value,
 235                                                               GParamSpec         *pspec);
 236 static void       ev_view_get_property                       (GObject            *object,
 237                                                               guint               prop_id,
 238                                                               GValue             *value,
 239                                                               GParamSpec         *pspec);
 240 static void       ev_view_class_init                         (EvViewClass        *class);
 241 static void       ev_view_init                               (EvView             *view);
 242
 243 /*** Zoom and sizing ***/
 244 static double   zoom_for_size_fit_width                      (int doc_width,
 245                                                               int doc_height,
 246                                                               int target_width,
 247                                                               int target_height,
 248                                                               int vsb_width);
 249 static double   zoom_for_size_fit_height                     (int doc_width,
 250                                                               int doc_height,
 251                                                               int target_width,
 252                                                               int target_height,
 253                                                               int vsb_height);
 254 static double   zoom_for_size_best_fit                       (int doc_width,
 255                                                               int doc_height,
 256                                                               int target_width,
 257                                                               int target_height,
 258                                                               int vsb_width,
 259                                                               int hsb_width);
 260 static void     ev_view_zoom_for_size_presentation           (EvView *view,
 261                                                               int     width,
 262                                                               int     height);
 263 static void     ev_view_zoom_for_size_continuous_and_dual_page (EvView *view,
 264                                                                 int     width,
 265                                                                 int     height,
 266                                                                 int     vsb_width,
 267                                                                 int     hsb_height);
 268 static void     ev_view_zoom_for_size_continuous               (EvView *view,
 269                                                                 int     width,
 270                                                                 int     height,
 271                                                                 int     vsb_width,
 272                                                                 int     hsb_height);
 273 static void     ev_view_zoom_for_size_dual_page                (EvView *view,
 274                                                                 int     width,
 275                                                                 int     height,
 276                                                                 int     vsb_width,
 277                                                                 int     hsb_height);
 278 static void     ev_view_zoom_for_size_single_page              (EvView *view,
 279                                                                 int     width,
 280                                                                 int     height,
 281                                                                 int     vsb_width,
 282                                                                 int     hsb_height);
 283 /*** Cursors ***/
 284 static GdkCursor* ev_view_create_invisible_cursor            (void);
 285 static void       ev_view_set_cursor                         (EvView             *view,
 286                                                               EvViewCursor        new_cursor);
 287
 288 /*** Status messages ***/
 289 static void       ev_view_set_status                         (EvView             *view,
 290                                                               const char         *message);
 291 static void       update_find_status_message                 (EvView             *view,
 292                                                               gboolean            this_page);
 293 static void       ev_view_set_find_status                    (EvView             *view,
 294                                                               const char         *message);
 295 /*** Find ***/
 296 static void       jump_to_find_result                        (EvView             *view);
 297 static void       jump_to_find_page                          (EvView             *view,
 298                                                               EvViewFindDirection direction,
 299                                                               gint                shift);
 300
 301 /*** Selection ***/
 302 static void       compute_selections                         (EvView             *view,
 303                                                               GdkPoint           *start,
 304                                                               GdkPoint           *stop);
 305 static void       clear_selection                            (EvView             *view);
 306 static void       selection_free                             (EvViewSelection    *selection);
 307 static char*      get_selected_text                          (EvView             *ev_view);
 308 static void       ev_view_primary_get_cb                     (GtkClipboard       *clipboard,
 309                                                               GtkSelectionData   *selection_data,
 310                                                               guint               info,
 311                                                               gpointer            data);
 312 static void       ev_view_primary_clear_cb                   (GtkClipboard       *clipboard,
 313                                                               gpointer            data);
 314 static void       ev_view_update_primary_selection           (EvView             *ev_view);
 315
 316 /*** Presentation ***/
 317 static void       ev_view_presentation_transition_start      (EvView             *ev_view);
 318 static void       ev_view_presentation_transition_stop       (EvView             *ev_view);
 319
 320
 321 G_DEFINE_TYPE (EvView, ev_view, GTK_TYPE_WIDGET)
 322
 323 static void
 324 scroll_to_current_page (EvView *view, GtkOrientation orientation)
 325 {
 326         GdkPoint view_point;
 327
 328         if (view->document == NULL) {
 329                 return;
 330         }
 331
 332         doc_point_to_view_point (view, view->current_page, &view->pending_point, &view_point);
 333
 334         if (orientation == GTK_ORIENTATION_VERTICAL) {
 335                 view->pending_point.y = 0;
 336         } else {
 337                 view->pending_point.x = 0;
 338         }
 339
 340         if (orientation == GTK_ORIENTATION_VERTICAL) {
 341                 if (view->continuous) {
 342                         gtk_adjustment_clamp_page (view->vadjustment,
 343                                                    view_point.y - view->spacing / 2,
 344                                                    view_point.y + view->vadjustment->page_size);
 345                 } else {
 346                         gtk_adjustment_set_value (view->vadjustment,
 347                                                   CLAMP (view_point.y,
 348                                                   view->vadjustment->lower,
 349                                                   view->vadjustment->upper -
 350                                                   view->vadjustment->page_size));
 351                 }
 352         } else {
 353                 if (view->dual_page) {
 354                         gtk_adjustment_clamp_page (view->hadjustment,
 355                                                    view_point.x,
 356                                                    view_point.x + view->hadjustment->page_size);
 357                 } else {
 358                         gtk_adjustment_set_value (view->hadjustment,
 359                                                   CLAMP (view_point.x,
 360                                                   view->hadjustment->lower,
 361                                                   view->hadjustment->upper -
 362                                                   view->hadjustment->page_size));
 363                 }
 364         }
 365 }
 366
 367 static void
 368 view_set_adjustment_values (EvView         *view,
 369                             GtkOrientation  orientation)
 370 {
 371         GtkWidget *widget = GTK_WIDGET (view);
 372         GtkAdjustment *adjustment;
 373         int requisition;
 374         int allocation;
 375
 376         double factor;
 377         gint new_value;
 378
 379         if (orientation == GTK_ORIENTATION_HORIZONTAL)  {
 380                 requisition = widget->requisition.width;
 381                 allocation = widget->allocation.width;
 382                 adjustment = view->hadjustment;
 383         } else {
 384                 requisition = widget->requisition.height;
 385                 allocation = widget->allocation.height;
 386                 adjustment = view->vadjustment;
 387         }
 388
 389         if (!adjustment)
 390                 return;
 391
 392         factor = 1.0;
 393         switch (view->pending_scroll) {
 394                 case SCROLL_TO_KEEP_POSITION:
 395                 case SCROLL_TO_FIND_LOCATION:
 396                         factor = (adjustment->value) / adjustment->upper;
 397                         break;
 398                 case SCROLL_TO_PAGE_POSITION:
 399                         break;
 400                 case SCROLL_TO_CENTER:
 401                         factor = (adjustment->value + adjustment->page_size * 0.5) / adjustment->upper;
 402                         break;
 403         }
 404
 405         adjustment->page_size = allocation;
 406         adjustment->step_increment = allocation * 0.1;
 407         adjustment->page_increment = allocation * 0.9;
 408         adjustment->lower = 0;
 409         adjustment->upper = MAX (allocation, requisition);
 410
 411         /*
 412          * We add 0.5 to the values before to average out our rounding errors.
 413          */
 414         switch (view->pending_scroll) {
 415                 case SCROLL_TO_KEEP_POSITION:
 416                 case SCROLL_TO_FIND_LOCATION:
 417                         new_value = CLAMP (adjustment->upper * factor + 0.5, 0, adjustment->upper - adjustment->page_size);
 418                         gtk_adjustment_set_value (adjustment, (int)new_value);
 419                         break;
 420                 case SCROLL_TO_PAGE_POSITION:
 421                         scroll_to_current_page (view, orientation);
 422                         break;
 423                 case SCROLL_TO_CENTER:
 424                         new_value = CLAMP (adjustment->upper * factor - adjustment->page_size * 0.5 + 0.5,
 425                                            0, adjustment->upper - adjustment->page_size);
 426                         gtk_adjustment_set_value (adjustment, (int)new_value);
 427                         break;
 428         }
 429
 430         gtk_adjustment_changed (adjustment);
 431 }
 432
 433 static void
 434 view_update_range_and_current_page (EvView *view)
 435 {
 436         gint current_page;
 437         gint best_current_page = -1;
 438
 439         /* Presentation trumps all other modes */
 440         if (view->presentation) {
 441                 view->start_page = view->current_page;
 442                 view->end_page = view->current_page;
 443         } else if (view->continuous) {
 444                 GdkRectangle current_area, unused, page_area;
 445                 GtkBorder border;
 446                 gboolean found = FALSE;
 447                 gint area_max = -1, area;
 448                 int i;
 449
 450                 if (!(view->vadjustment && view->hadjustment))
 451                         return;
 452
 453                 current_area.x = view->hadjustment->value;
 454                 current_area.width = view->hadjustment->upper;
 455                 current_area.y = view->vadjustment->value;
 456                 current_area.height = view->vadjustment->page_size;
 457
 458                 for (i = 0; i < ev_page_cache_get_n_pages (view->page_cache); i++) {
 459
 460                         get_page_extents (view, i, &page_area, &border);
 461
 462                         if (gdk_rectangle_intersect (&current_area, &page_area, &unused)) {
 463                                 area = unused.width * unused.height;
 464
 465                                 if (!found) {
 466                                         area_max = area;
 467                                         view->start_page = i;
 468                                         found = TRUE;
 469                                         best_current_page = i;
 470                                 }
 471                                 if (area > area_max) {
 472                                         best_current_page = (area == area_max) ? MIN (i, best_current_page) : i;
 473                                         area_max = area;
 474                                 }
 475
 476                                 view->end_page = i;
 477                         } else if (found) {
 478                                 break;
 479                         }
 480                 }
 481
 482         } else if (view->dual_page) {
 483                 if (view->current_page % 2 == ev_page_cache_get_dual_even_left (view->page_cache)) {
 484                         view->start_page = view->current_page;
 485                         if (view->current_page + 1 < ev_page_cache_get_n_pages (view->page_cache))
 486                                 view->end_page = view->start_page + 1;
 487                         else
 488                                 view->end_page = view->start_page;
 489                 } else {
 490                         if (view->current_page < 1)
 491                                 view->start_page = view->current_page;
 492                         else
 493                                 view->start_page = view->current_page - 1;
 494                         view->end_page = view->current_page;
 495                 }
 496         } else {
 497                 view->start_page = view->current_page;
 498                 view->end_page = view->current_page;
 499         }
 500
 501         best_current_page = MAX (best_current_page, view->start_page);
 502         current_page = ev_page_cache_get_current_page (view->page_cache);
 503
 504         if ((current_page != best_current_page) && (view->pending_scroll == SCROLL_TO_KEEP_POSITION)) {
 505                 view->current_page = best_current_page;
 506                 ev_page_cache_set_current_page (view->page_cache, best_current_page);
 507         }
 508
 509         ev_pixbuf_cache_set_page_range (view->pixbuf_cache,
 510                                         view->start_page,
 511                                         view->end_page,
 512                                         view->rotation,
 513                                         view->scale,
 514                                         view->selection_info.selections);
 515 }
 516
 517 static void
 518 set_scroll_adjustment (EvView *view,
 519                        GtkOrientation  orientation,
 520                        GtkAdjustment  *adjustment)
 521 {
 522         GtkAdjustment **to_set;
 523
 524         if (orientation == GTK_ORIENTATION_HORIZONTAL)
 525                 to_set = &view->hadjustment;
 526         else
 527                 to_set = &view->vadjustment;
 528
 529         if (*to_set != adjustment) {
 530                 if (*to_set) {
 531                         g_signal_handlers_disconnect_by_func (*to_set,
 532                                                               (gpointer) on_adjustment_value_changed,
 533                                                               view);
 534                         g_object_unref (*to_set);
 535                 }
 536
 537                 *to_set = adjustment;
 538                 view_set_adjustment_values (view, orientation);
 539
 540                 if (*to_set) {
 541                         g_object_ref (*to_set);
 542                         g_signal_connect (*to_set, "value_changed",
 543                                           G_CALLBACK (on_adjustment_value_changed), view);
 544                 }
 545         }
 546 }
 547
 548 static void
 549 ev_view_set_scroll_adjustments (EvView *view,
 550                                 GtkAdjustment  *hadjustment,
 551                                 GtkAdjustment  *vadjustment)
 552 {
 553         set_scroll_adjustment (view, GTK_ORIENTATION_HORIZONTAL, hadjustment);
 554         set_scroll_adjustment (view, GTK_ORIENTATION_VERTICAL, vadjustment);
 555
 556         on_adjustment_value_changed (NULL, view);
 557 }
 558
 559 static void
 560 add_scroll_binding_keypad (GtkBindingSet  *binding_set,
 561                            guint           keyval,
 562                            GdkModifierType modifiers,
 563                            EvScrollType    scroll,
 564                            gboolean        horizontal)
 565 {
 566   guint keypad_keyval = keyval - GDK_Left + GDK_KP_Left;
 567
 568   gtk_binding_entry_add_signal (binding_set, keyval, modifiers,
 569                                 "binding_activated", 2,
 570                                 EV_TYPE_SCROLL_TYPE, scroll,
 571                                 G_TYPE_BOOLEAN, horizontal);
 572   gtk_binding_entry_add_signal (binding_set, keypad_keyval, modifiers,
 573                                 "binding_activated", 2,
 574                                 EV_TYPE_SCROLL_TYPE, scroll,
 575                                 G_TYPE_BOOLEAN, horizontal);
 576 }
 577
 578 void
 579 ev_view_scroll (EvView        *view,
 580                 EvScrollType   scroll,
 581                 gboolean horizontal)
 582 {
 583         GtkAdjustment *adjustment;
 584         double value, increment;
 585         gboolean first_page = FALSE;
 586         gboolean last_page = FALSE;
 587
 588         view->jump_to_find_result = FALSE;
 589
 590         if (view->presentation || view->sizing_mode == EV_SIZING_BEST_FIT) {
 591                 switch (scroll) {
 592                         case EV_SCROLL_PAGE_BACKWARD:
 593                         case EV_SCROLL_STEP_BACKWARD:
 594                                 ev_view_previous_page (view);
 595                                 break;
 596                         case EV_SCROLL_PAGE_FORWARD:
 597                         case EV_SCROLL_STEP_FORWARD:
 598                                 ev_view_next_page (view);
 599                                 break;
 600                         default:
 601                                 break;
 602                 }
 603                 return;
 604         }
 605
 606         /* Assign values for increment and vertical adjustment */
 607         adjustment = horizontal ? view->hadjustment : view->vadjustment;
 608         increment = adjustment->page_size * 0.75;
 609         value = adjustment->value;
 610
 611         /* Assign boolean for first and last page */
 612         if (view->current_page == 0)
 613                 first_page = TRUE;
 614         if (view->current_page == ev_page_cache_get_n_pages (view->page_cache) - 1)
 615                 last_page = TRUE;
 616
 617         switch (scroll) {
 618                 case EV_SCROLL_PAGE_BACKWARD:
 619                         /* Do not jump backwards if at the first page */
 620                         if (value == (adjustment->lower) && first_page) {
 621                                 /* Do nothing */
 622                                 /* At the top of a page, assign the upper bound limit of previous page */
 623                         } else if (value == (adjustment->lower)) {
 624                                 value = adjustment->upper - adjustment->page_size;
 625                                 ev_view_previous_page (view);
 626                                 /* Jump to the top */
 627                         } else {
 628                                 value = MAX (value - increment, adjustment->lower);
 629                         }
 630                         break;
 631                 case EV_SCROLL_PAGE_FORWARD:
 632                         /* Do not jump forward if at the last page */
 633                         if (value == (adjustment->upper - adjustment->page_size) && last_page) {
 634                                 /* Do nothing */
 635                         /* At the bottom of a page, assign the lower bound limit of next page */
 636                         } else if (value == (adjustment->upper - adjustment->page_size)) {
 637                                 value = 0;
 638                                 ev_view_next_page (view);
 639                         /* Jump to the bottom */
 640                         } else {
 641                                 value = MIN (value + increment, adjustment->upper - adjustment->page_size);
 642                         }
 643                         break;
 644                 case EV_SCROLL_STEP_BACKWARD:
 645                         value -= adjustment->step_increment;
 646                         break;
 647                 case EV_SCROLL_STEP_FORWARD:
 648                         value += adjustment->step_increment;
 649                         break;
 650                 case EV_SCROLL_STEP_DOWN:
 651                         value -= adjustment->step_increment / 10;
 652                         break;
 653                 case EV_SCROLL_STEP_UP:
 654                         value += adjustment->step_increment / 10;
 655                         break;
 656                 default:
 657                         break;
 658         }
 659
 660         value = CLAMP (value, adjustment->lower,
 661                        adjustment->upper - adjustment->page_size);
 662
 663         gtk_adjustment_set_value (adjustment, value);
 664 }
 665
 666 #define MARGIN 5
 667
 668 static void
 669 ensure_rectangle_is_visible (EvView *view, GdkRectangle *rect)
 670 {
 671         GtkWidget *widget = GTK_WIDGET (view);
 672         GtkAdjustment *adjustment;
 673         int value;
 674
 675         view->pending_scroll = SCROLL_TO_FIND_LOCATION;
 676
 677         adjustment = view->vadjustment;
 678
 679         if (rect->y < adjustment->value) {
 680                 value = MAX (adjustment->lower, rect->y - MARGIN);
 681                 gtk_adjustment_set_value (view->vadjustment, value);
 682         } else if (rect->y + rect->height >
 683                    adjustment->value + widget->allocation.height) {
 684                 value = MIN (adjustment->upper, rect->y + rect->height -
 685                              widget->allocation.height + MARGIN);
 686                 gtk_adjustment_set_value (view->vadjustment, value);
 687         }
 688
 689         adjustment = view->hadjustment;
 690
 691         if (rect->x < adjustment->value) {
 692                 value = MAX (adjustment->lower, rect->x - MARGIN);
 693                 gtk_adjustment_set_value (view->hadjustment, value);
 694         } else if (rect->x + rect->height >
 695                    adjustment->value + widget->allocation.width) {
 696                 value = MIN (adjustment->upper, rect->x + rect->width -
 697                              widget->allocation.width + MARGIN);
 698                 gtk_adjustment_set_value (view->hadjustment, value);
 699         }
 700
 701         gtk_widget_queue_resize (GTK_WIDGET (view));
 702 }
 703
 704 /*** Geometry computations ***/
 705
 706 static void
 707 compute_border (EvView *view, int width, int height, GtkBorder *border)
 708 {
 709         if (view->presentation) {
 710                 border->left = 0;
 711                 border->right = 0;
 712                 border->top = 0;
 713                 border->bottom = 0;
 714         } else {
 715                 ev_document_misc_get_page_border_size (width, height, border);
 716         }
 717 }
 718
 719 static void
 720 get_page_y_offset (EvView *view, int page, double zoom, int *y_offset)
 721 {
 722         int max_width, offset;
 723         GtkBorder border;
 724
 725         g_return_if_fail (y_offset != NULL);
 726
 727         ev_page_cache_get_max_width (view->page_cache, view->rotation, zoom, &max_width);
 728
 729         compute_border (view, max_width, max_width, &border);
 730
 731         if (view->dual_page) {
 732                 ev_page_cache_get_height_to_page (view->page_cache, page,
 733                                                   view->rotation, zoom, NULL, &offset);
 734                 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);
 735         } else {
 736                 ev_page_cache_get_height_to_page (view->page_cache, page,
 737                                                   view->rotation, zoom, &offset, NULL);
 738                 offset += (page + 1) * view->spacing + page * (border.top + border.bottom);
 739         }
 740
 741         *y_offset = offset;
 742         return;
 743 }
 744
 745 static gboolean
 746 get_page_extents (EvView       *view,
 747                   gint          page,
 748                   GdkRectangle *page_area,
 749                   GtkBorder    *border)
 750 {
 751         GtkWidget *widget;
 752         int width, height;
 753
 754         widget = GTK_WIDGET (view);
 755
 756         /* Get the size of the page */
 757         ev_page_cache_get_size (view->page_cache, page,
 758                                 view->rotation,
 759                                 view->scale,
 760                                 &width, &height);
 761         compute_border (view, width, height, border);
 762         page_area->width = width + border->left + border->right;
 763         page_area->height = height + border->top + border->bottom;
 764
 765         if (view->presentation) {
 766                 page_area->x = (MAX (0, widget->allocation.width - width))/2;
 767                 page_area->y = (MAX (0, widget->allocation.height - height))/2;
 768         } else if (view->continuous) {
 769                 gint max_width;
 770                 gint x, y;
 771
 772                 ev_page_cache_get_max_width (view->page_cache, view->rotation,
 773                                              view->scale, &max_width);
 774                 max_width = max_width + border->left + border->right;
 775                 /* Get the location of the bounding box */
 776                 if (view->dual_page) {
 777                         x = view->spacing + ((page % 2 == ev_page_cache_get_dual_even_left (view->page_cache)) ? 0 : 1) * (max_width + view->spacing);
 778                         x = x + MAX (0, widget->allocation.width - (max_width * 2 + view->spacing * 3)) / 2;
 779                         if (page % 2 == ev_page_cache_get_dual_even_left (view->page_cache))
 780                                 x = x + (max_width - width - border->left - border->right);
 781                 } else {
 782                         x = view->spacing;
 783                         x = x + MAX (0, widget->allocation.width - (width + view->spacing * 2)) / 2;
 784                 }
 785
 786                 get_page_y_offset (view, page, view->scale, &y);
 787
 788                 page_area->x = x;
 789                 page_area->y = y;
 790         } else {
 791                 gint x, y;
 792                 if (view->dual_page) {
 793                         gint width_2, height_2;
 794                         gint max_width = width;
 795                         gint max_height = height;
 796                         GtkBorder overall_border;
 797                         gint other_page;
 798
 799                         other_page = (page % 2 == ev_page_cache_get_dual_even_left (view->page_cache)) ? page + 1: page - 1;
 800
 801                         /* First, we get the bounding box of the two pages */
 802                         if (other_page < ev_page_cache_get_n_pages (view->page_cache)
 803                             && (0 <= other_page)) {
 804                                 ev_page_cache_get_size (view->page_cache,
 805                                                         other_page,
 806                                                         view->rotation,
 807                                                         view->scale,
 808                                                         &width_2, &height_2);
 809                                 if (width_2 > width)
 810                                         max_width = width_2;
 811                                 if (height_2 > height)
 812                                         max_height = height_2;
 813                         }
 814                         compute_border (view, max_width, max_height, &overall_border);
 815
 816                         /* Find the offsets */
 817                         x = view->spacing;
 818                         y = view->spacing;
 819
 820                         /* Adjust for being the left or right page */
 821                         if (page % 2 == ev_page_cache_get_dual_even_left (view->page_cache))
 822                                 x = x + max_width - width;
 823                         else
 824                                 x = x + (max_width + overall_border.left + overall_border.right) + view->spacing;
 825
 826                         y = y + (max_height - height)/2;
 827
 828                         /* Adjust for extra allocation */
 829                         x = x + MAX (0, widget->allocation.width -
 830                                      ((max_width + overall_border.left + overall_border.right) * 2 + view->spacing * 3))/2;
 831                         y = y + MAX (0, widget->allocation.height - (height + view->spacing * 2))/2;
 832                 } else {
 833                         x = view->spacing;
 834                         y = view->spacing;
 835
 836                         /* Adjust for extra allocation */
 837                         x = x + MAX (0, widget->allocation.width - (width + border->left + border->right + view->spacing * 2))/2;
 838                         y = y + MAX (0, widget->allocation.height - (height + border->top + border->bottom +  view->spacing * 2))/2;
 839                 }
 840
 841                 page_area->x = x;
 842                 page_area->y = y;
 843         }
 844
 845         return TRUE;
 846 }
 847
 848 static void
 849 view_point_to_doc_point (EvView *view,
 850                          GdkPoint *view_point,
 851                          GdkRectangle *page_area,
 852                          double  *doc_point_x,
 853                          double  *doc_point_y)
 854 {
 855         *doc_point_x = (double) (view_point->x - page_area->x) / view->scale;
 856         *doc_point_y = (double) (view_point->y - page_area->y) / view->scale;
 857 }
 858
 859 static void
 860 view_rect_to_doc_rect (EvView *view,
 861                        GdkRectangle *view_rect,
 862                        GdkRectangle *page_area,
 863                        EvRectangle  *doc_rect)
 864 {
 865         doc_rect->x1 = (double) (view_rect->x - page_area->x) / view->scale;
 866         doc_rect->y1 = (double) (view_rect->y - page_area->y) / view->scale;
 867         doc_rect->x2 = doc_rect->x1 + (double) view_rect->width / view->scale;
 868         doc_rect->y2 = doc_rect->y1 + (double) view_rect->height / view->scale;
 869 }
 870
 871 static gboolean
 872 doc_point_to_view_point (EvView       *view,
 873                          int           page,
 874                          EvPoint      *doc_point,
 875                          GdkPoint     *view_point)
 876 {
 877         GdkRectangle page_area;
 878         GtkBorder border;
 879         double x, y, view_x, view_y;
 880         int width, height;
 881
 882         ev_page_cache_get_size (view->page_cache, page,
 883                                 view->rotation,
 884                                 1.0,
 885                                 &width, &height);
 886
 887         if (view->rotation == 0) {
 888                 x = doc_point->x;
 889                 y = doc_point->y;
 890         } else if (view->rotation == 90) {
 891                 x = width - doc_point->y;
 892                 y = doc_point->x;
 893         } else if (view->rotation == 180) {
 894                 x = width - doc_point->x;
 895                 y = height - doc_point->y;
 896         } else if (view->rotation == 270) {
 897                 x = doc_point->y;
 898                 y = height - doc_point->x;
 899         } else {
 900                 g_assert_not_reached ();
 901         }
 902
 903         get_page_extents (view, page, &page_area, &border);
 904
 905         view_x = x * view->scale;
 906         view_y = y * view->scale;
 907         view_point->x = view_x + page_area.x;
 908         view_point->y = view_y + page_area.y;
 909
 910         return (view_x > 0 && view_x <= page_area.width &&
 911                 view_y > 0 && view_y <= page_area.height);
 912 }
 913
 914 static void
 915 doc_rect_to_view_rect (EvView       *view,
 916                        int           page,
 917                        EvRectangle  *doc_rect,
 918                        GdkRectangle *view_rect)
 919 {
 920         GdkRectangle page_area;
 921         GtkBorder border;
 922         double x, y, w, h;
 923         int width, height;
 924
 925         ev_page_cache_get_size (view->page_cache, page,
 926                                 view->rotation,
 927                                 1.0,
 928                                 &width, &height);
 929
 930         if (view->rotation == 0) {
 931                 x = doc_rect->x1;
 932                 y = doc_rect->y1;
 933                 w = doc_rect->x2 - doc_rect->x1;
 934                 h = doc_rect->y2 - doc_rect->y1;
 935         } else if (view->rotation == 90) {
 936                 x = width - doc_rect->y2;
 937                 y = doc_rect->x1;
 938                 w = doc_rect->y2 - doc_rect->y1;
 939                 h = doc_rect->x2 - doc_rect->x1;
 940         } else if (view->rotation == 180) {
 941                 x = width - doc_rect->x2;
 942                 y = height - doc_rect->y2;
 943                 w = doc_rect->x2 - doc_rect->x1;
 944                 h = doc_rect->y2 - doc_rect->y1;
 945         } else if (view->rotation == 270) {
 946                 x = doc_rect->y1;
 947                 y = height - doc_rect->x2;
 948                 w = doc_rect->y2 - doc_rect->y1;
 949                 h = doc_rect->x2 - doc_rect->x1;
 950         } else {
 951                 g_assert_not_reached ();
 952         }
 953
 954         get_page_extents (view, page, &page_area, &border);
 955
 956         view_rect->x = x * view->scale + page_area.x;
 957         view_rect->y = y * view->scale + page_area.y;
 958         view_rect->width = w * view->scale;
 959         view_rect->height = h * view->scale;
 960 }
 961
 962 static void
 963 find_page_at_location (EvView  *view,
 964                        gdouble  x,
 965                        gdouble  y,
 966                        gint    *page,
 967                        gint    *x_offset,
 968                        gint    *y_offset)
 969 {
 970         int i;
 971
 972         if (view->document == NULL)
 973                 return;
 974
 975         g_assert (page);
 976         g_assert (x_offset);
 977         g_assert (y_offset);
 978
 979         for (i = view->start_page; i <= view->end_page; i++) {
 980                 GdkRectangle page_area;
 981                 GtkBorder border;
 982
 983                 if (! get_page_extents (view, i, &page_area, &border))
 984                         continue;
 985
 986                 if ((x >= page_area.x + border.left) &&
 987                     (x < page_area.x + page_area.width - border.right) &&
 988                     (y >= page_area.y + border.top) &&
 989                     (y < page_area.y + page_area.height - border.bottom)) {
 990                         *page = i;
 991                         *x_offset = x - (page_area.x + border.left);
 992                         *y_offset = y - (page_area.y + border.top);
 993                         return;
 994                 }
 995         }
 996
 997         *page = -1;
 998 }
 999
1000 static gboolean
1001 location_in_text (EvView  *view,
1002                   gdouble  x,
1003                   gdouble  y)
1004 {
1005         GdkRegion *region;
1006         gint page = -1;
1007         gint x_offset = 0, y_offset = 0;
1008
1009         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1010
1011         if (page == -1)
1012                 return FALSE;
1013
1014         region = ev_pixbuf_cache_get_text_mapping (view->pixbuf_cache, page);
1015
1016         if (region)
1017                 return gdk_region_point_in (region, x_offset / view->scale, y_offset / view->scale);
1018         else
1019                 return FALSE;
1020 }
1021
1022 static int
1023 ev_view_get_width (EvView *view)
1024 {
1025         return GTK_WIDGET (view)->allocation.width;
1026 }
1027
1028 static int
1029 ev_view_get_height (EvView *view)
1030 {
1031         return GTK_WIDGET (view)->allocation.height;
1032 }
1033
1034 static gboolean
1035 location_in_selected_text (EvView  *view,
1036                            gdouble  x,
1037                            gdouble  y)
1038 {
1039         gint page = -1;
1040         gint x_offset = 0, y_offset = 0;
1041         EvViewSelection *selection;
1042         GList *l = NULL;
1043
1044         for (l = view->selection_info.selections; l != NULL; l = l->next) {
1045                 selection = (EvViewSelection *)l->data;
1046
1047                 find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1048
1049                 if (page != selection->page)
1050                         continue;
1051
1052                 if (selection->covered_region &&
1053                     gdk_region_point_in (selection->covered_region, x_offset, y_offset))
1054                         return TRUE;
1055         }
1056
1057         return FALSE;
1058 }
1059
1060 static gboolean
1061 get_doc_point_from_offset (EvView *view,
1062                            gint    page,
1063                            gint    x_offset,
1064                            gint    y_offset,
1065                            gint   *x_new,
1066                            gint   *y_new)
1067 {
1068         int width, height;
1069         double x, y;
1070
1071         ev_page_cache_get_size (view->page_cache, page,
1072                                 view->rotation,
1073                                 1.0,
1074                                 &width, &height);
1075
1076         x_offset = x_offset / view->scale;
1077         y_offset = y_offset / view->scale;
1078
1079         if (view->rotation == 0) {
1080                 x = x_offset;
1081                 y = y_offset;
1082         } else if (view->rotation == 90) {
1083                 x = y_offset;
1084                 y = width - x_offset;
1085         } else if (view->rotation == 180) {
1086                 x = width - x_offset;
1087                 y = height - y_offset;
1088         } else if (view->rotation == 270) {
1089                 x = height - y_offset;
1090                 y = x_offset;
1091         } else {
1092                 g_assert_not_reached ();
1093         }
1094
1095         *x_new = x;
1096         *y_new = y;
1097
1098         return TRUE;
1099 }
1100
1101 /*** Hyperref ***/
1102 static EvLink *
1103 ev_view_get_link_at_location (EvView  *view,
1104                               gdouble  x,
1105                               gdouble  y)
1106 {
1107         gint page = -1;
1108         gint x_offset = 0, y_offset = 0;
1109         gint x_new = 0, y_new = 0;
1110         GList *link_mapping;
1111
1112         x += view->scroll_x;
1113         y += view->scroll_y;
1114
1115         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1116
1117         if (page == -1)
1118                 return NULL;
1119
1120
1121         if (get_doc_point_from_offset (view, page, x_offset,
1122                                        y_offset, &x_new, &y_new) == FALSE)
1123                 return NULL;
1124
1125         link_mapping = ev_pixbuf_cache_get_link_mapping (view->pixbuf_cache, page);
1126
1127         if (link_mapping)
1128                 return ev_link_mapping_find (link_mapping, x_new, y_new);
1129         else
1130                 return NULL;
1131 }
1132
1133 static void
1134 goto_fitr_dest (EvView *view, EvLinkDest *dest)
1135 {
1136         EvPoint doc_point;
1137         double zoom;
1138
1139         zoom = zoom_for_size_best_fit (ev_link_dest_get_right (dest) - ev_link_dest_get_left (dest),
1140                                        ev_link_dest_get_bottom (dest) - ev_link_dest_get_top (dest),
1141                                        ev_view_get_width (view),
1142                                        ev_view_get_height (view), 0, 0);
1143
1144         ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1145         ev_view_set_zoom (view, zoom, FALSE);
1146
1147         doc_point.x = ev_link_dest_get_left (dest);
1148         doc_point.y = ev_link_dest_get_top (dest);
1149
1150         view->current_page = ev_link_dest_get_page (dest);
1151         view->pending_point = doc_point;
1152         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1153
1154         gtk_widget_queue_resize (GTK_WIDGET (view));
1155 }
1156
1157 static void
1158 goto_fitv_dest (EvView *view, EvLinkDest *dest)
1159 {
1160         EvPoint doc_point;
1161         int doc_width, doc_height, page;
1162         double zoom;
1163
1164         page = ev_link_dest_get_page (dest);
1165         ev_page_cache_get_size (view->page_cache, page, 0, 1.0, &doc_width, &doc_height);
1166
1167         doc_point.x = ev_link_dest_get_left (dest);
1168         doc_point.y = 0;
1169
1170         zoom = zoom_for_size_fit_height (doc_width - doc_point.x , doc_height,
1171                                          ev_view_get_width (view),
1172                                          ev_view_get_height (view), 0);
1173
1174         ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1175         ev_view_set_zoom (view, zoom, FALSE);
1176
1177         view->current_page = page;
1178         view->pending_point = doc_point;
1179         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1180
1181         gtk_widget_queue_resize (GTK_WIDGET (view));
1182 }
1183
1184 static void
1185 goto_fith_dest (EvView *view, EvLinkDest *dest)
1186 {
1187         EvPoint doc_point;
1188         int doc_width, doc_height, page;
1189         double zoom;
1190
1191         page = ev_link_dest_get_page (dest);
1192         ev_page_cache_get_size (view->page_cache, page, 0, 1.0, &doc_width, &doc_height);
1193
1194         doc_point.x = 0;
1195         doc_point.y = ev_link_dest_get_top (dest);
1196
1197         zoom = zoom_for_size_fit_width (doc_width, ev_link_dest_get_top (dest),
1198                                         ev_view_get_width (view),
1199                                         ev_view_get_height (view), 0);
1200
1201         ev_view_set_sizing_mode (view, EV_SIZING_FIT_WIDTH);
1202         ev_view_set_zoom (view, zoom, FALSE);
1203
1204         view->current_page = page;
1205         view->pending_point = doc_point;
1206         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1207
1208         gtk_widget_queue_resize (GTK_WIDGET (view));
1209 }
1210
1211 static void
1212 goto_fit_dest (EvView *view, EvLinkDest *dest)
1213 {
1214         double zoom;
1215         int doc_width, doc_height;
1216         int page;
1217
1218         page = ev_link_dest_get_page (dest);
1219         ev_page_cache_get_size (view->page_cache, page, 0, 1.0, &doc_width, &doc_height);
1220
1221         zoom = zoom_for_size_best_fit (doc_width, doc_height, ev_view_get_width (view),
1222                                        ev_view_get_height (view), 0, 0);
1223
1224         ev_view_set_sizing_mode (view, EV_SIZING_BEST_FIT);
1225         ev_view_set_zoom (view, zoom, FALSE);
1226
1227         view->current_page = page;
1228         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1229
1230         gtk_widget_queue_resize (GTK_WIDGET (view));
1231 }
1232
1233 static void
1234 goto_xyz_dest (EvView *view, EvLinkDest *dest)
1235 {
1236         EvPoint doc_point;
1237         gint page;
1238         double zoom;
1239
1240         zoom = ev_link_dest_get_zoom (dest);
1241         page = ev_link_dest_get_page (dest);
1242
1243         if (zoom > 1) {
1244                 ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1245                 ev_view_set_zoom (view, zoom, FALSE);
1246         }
1247
1248         doc_point.x = ev_link_dest_get_left (dest);
1249         doc_point.y = ev_link_dest_get_top (dest);
1250
1251         view->current_page = page;
1252         view->pending_point = doc_point;
1253         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1254
1255         gtk_widget_queue_resize (GTK_WIDGET (view));
1256 }
1257
1258 static void
1259 goto_dest (EvView *view, EvLinkDest *dest)
1260 {
1261         EvLinkDestType type;
1262         int page, n_pages, current_page;
1263
1264         page = ev_link_dest_get_page (dest);
1265         n_pages = ev_page_cache_get_n_pages (view->page_cache);
1266
1267         if (page < 0 || page >= n_pages)
1268                 return;
1269
1270         current_page = view->current_page;
1271
1272         type = ev_link_dest_get_dest_type (dest);
1273
1274         switch (type) {
1275                 case EV_LINK_DEST_TYPE_PAGE:
1276                         ev_page_cache_set_current_page (view->page_cache, page);
1277                         break;
1278                 case EV_LINK_DEST_TYPE_FIT:
1279                         goto_fit_dest (view, dest);
1280                         break;
1281                 case EV_LINK_DEST_TYPE_FITH:
1282                         goto_fith_dest (view, dest);
1283                         break;
1284                 case EV_LINK_DEST_TYPE_FITV:
1285                         goto_fitv_dest (view, dest);
1286                         break;
1287                 case EV_LINK_DEST_TYPE_FITR:
1288                         goto_fitr_dest (view, dest);
1289                         break;
1290                 case EV_LINK_DEST_TYPE_XYZ:
1291                         goto_xyz_dest (view, dest);
1292                         break;
1293                 case EV_LINK_DEST_TYPE_PAGE_LABEL:
1294                         ev_page_cache_set_page_label (view->page_cache, ev_link_dest_get_page_label (dest));
1295                         break;
1296                 default:
1297                         g_assert_not_reached ();
1298         }
1299
1300         if (current_page != view->current_page)
1301                 ev_page_cache_set_current_page (view->page_cache,
1302                                                 view->current_page);
1303 }
1304
1305 void
1306 ev_view_goto_dest (EvView *view, EvLinkDest *dest)
1307 {
1308         EvLinkDestType type;
1309
1310         type = ev_link_dest_get_dest_type (dest);
1311
1312         if (type == EV_LINK_DEST_TYPE_NAMED) {
1313                 EvLinkDest  *dest2;
1314                 const gchar *named_dest;
1315
1316                 named_dest = ev_link_dest_get_named_dest (dest);
1317                 dest2 = ev_document_links_find_link_dest (EV_DOCUMENT_LINKS (view->document),
1318                                                           named_dest);
1319                 if (dest2) {
1320                         goto_dest (view, dest2);
1321                         g_object_unref (dest2);
1322                 }
1323
1324                 return;
1325         }
1326
1327         goto_dest (view, dest);
1328 }
1329
1330 void
1331 ev_view_handle_link (EvView *view, EvLink *link)
1332 {
1333         EvLinkAction    *action = NULL;
1334         EvLinkActionType type;
1335
1336         action = ev_link_get_action (link);
1337         if (!action)
1338                 return;
1339
1340         type = ev_link_action_get_action_type (action);
1341
1342         switch (type) {
1343                 case EV_LINK_ACTION_TYPE_GOTO_DEST: {
1344                         EvLinkDest *dest;
1345
1346                         dest = ev_link_action_get_dest (action);
1347                         ev_view_goto_dest (view, dest);
1348                 }
1349                         break;
1350                 case EV_LINK_ACTION_TYPE_GOTO_REMOTE:
1351                 case EV_LINK_ACTION_TYPE_EXTERNAL_URI:
1352                 case EV_LINK_ACTION_TYPE_LAUNCH:
1353                 case EV_LINK_ACTION_TYPE_NAMED:
1354                         g_signal_emit (view, signals[SIGNAL_EXTERNAL_LINK], 0, action);
1355                         break;
1356         }
1357 }
1358
1359 static gchar *
1360 page_label_from_dest (EvView *view, EvLinkDest *dest)
1361 {
1362         EvLinkDestType type;
1363         gchar *msg = NULL;
1364
1365         type = ev_link_dest_get_dest_type (dest);
1366
1367         switch (type) {
1368                 case EV_LINK_DEST_TYPE_NAMED: {
1369                         EvLinkDest  *dest2;
1370                         const gchar *named_dest;
1371
1372                         named_dest = ev_link_dest_get_named_dest (dest);
1373                         dest2 = ev_document_links_find_link_dest (EV_DOCUMENT_LINKS (view->document),
1374                                                                   named_dest);
1375                         if (dest2) {
1376                                 msg = ev_page_cache_get_page_label (view->page_cache,
1377                                                                     ev_link_dest_get_page (dest2));
1378                                 g_object_unref (dest2);
1379                         }
1380                 }
1381
1382                         break;
1383                 default:
1384                         msg = ev_page_cache_get_page_label (view->page_cache,
1385                                                             ev_link_dest_get_page (dest));
1386         }
1387
1388         return msg;
1389 }
1390
1391 static char *
1392 tip_from_action_named (EvLinkAction *action)
1393 {
1394         const gchar *name = ev_link_action_get_name (action);
1395
1396         if (g_ascii_strcasecmp (name, "FirstPage") == 0) {
1397                 return g_strdup (_("Go to first page"));
1398         } else if (g_ascii_strcasecmp (name, "PrevPage") == 0) {
1399                 return g_strdup (_("Go to previous page"));
1400         } else if (g_ascii_strcasecmp (name, "NextPage") == 0) {
1401                 return g_strdup (_("Go to next page"));
1402         } else if (g_ascii_strcasecmp (name, "LastPage") == 0) {
1403                 return g_strdup (_("Go to last page"));
1404         } else if (g_ascii_strcasecmp (name, "GoToPage") == 0) {
1405                 return g_strdup (_("Go to page"));
1406         } else if (g_ascii_strcasecmp (name, "Find") == 0) {
1407                 return g_strdup (_("Find"));
1408         }
1409
1410         return NULL;
1411 }
1412
1413 static char *
1414 tip_from_link (EvView *view, EvLink *link)
1415 {
1416         EvLinkAction *action;
1417         EvLinkActionType type;
1418         char *msg = NULL;
1419         char *page_label;
1420         const char *title;
1421
1422         action = ev_link_get_action (link);
1423         title = ev_link_get_title (link);
1424
1425         if (!action)
1426                 return title ? g_strdup (title) : NULL;
1427
1428         type = ev_link_action_get_action_type (action);
1429
1430         switch (type) {
1431                 case EV_LINK_ACTION_TYPE_GOTO_DEST:
1432                         page_label = page_label_from_dest (view,
1433                                                            ev_link_action_get_dest (action));
1434                         msg = g_strdup_printf (_("Go to page %s"), page_label);
1435                         g_free (page_label);
1436                         break;
1437                 case EV_LINK_ACTION_TYPE_GOTO_REMOTE:
1438                         if (title) {
1439                                 msg = g_strdup_printf (_("Go to %s on file “%s”"), title,
1440                                                        ev_link_action_get_filename (action));
1441                         } else {
1442                                 msg = g_strdup_printf (_("Go to file “%s”"),
1443                                                        ev_link_action_get_filename (action));
1444                         }
1445
1446                         break;
1447                 case EV_LINK_ACTION_TYPE_EXTERNAL_URI:
1448                         msg = g_strdup (ev_link_action_get_uri (action));
1449                         break;
1450                 case EV_LINK_ACTION_TYPE_LAUNCH:
1451                         msg = g_strdup_printf (_("Launch %s"),
1452                                                ev_link_action_get_filename (action));
1453                         break;
1454                 case EV_LINK_ACTION_TYPE_NAMED:
1455                         msg = tip_from_action_named (action);
1456                         break;
1457                 default:
1458                         if (title)
1459                                 msg = g_strdup (title);
1460                         break;
1461         }
1462
1463         return msg;
1464 }
1465
1466 static void
1467 handle_link_over_xy (EvView *view, gint x, gint y)
1468 {
1469         EvLink *link;
1470
1471         link = ev_view_get_link_at_location (view, x, y);
1472
1473         if (view->link_tooltip == NULL) {
1474                 view->link_tooltip = ev_tooltip_new (GTK_WIDGET (view));
1475         }
1476
1477         if (view->hovered_link != link) {
1478                 view->hovered_link = link;
1479                 ev_tooltip_deactivate (EV_TOOLTIP (view->link_tooltip));
1480         }
1481
1482         if (link) {
1483                 char *msg = tip_from_link (view, link);
1484
1485                 if (msg && g_utf8_validate (msg, -1, NULL)) {
1486                         EvTooltip *tooltip = EV_TOOLTIP (view->link_tooltip);
1487
1488                         ev_tooltip_set_position (tooltip, x, y);
1489                         ev_tooltip_set_text (tooltip, msg);
1490                         ev_tooltip_activate (tooltip);
1491                 }
1492                 g_free (msg);
1493
1494                 ev_view_set_cursor (view, EV_VIEW_CURSOR_LINK);
1495         } else if (location_in_text (view, x + view->scroll_x, y + view->scroll_y)) {
1496                 ev_view_set_cursor (view, EV_VIEW_CURSOR_IBEAM);
1497         } else {
1498                 ev_view_set_status (view, NULL);
1499                 if (view->cursor == EV_VIEW_CURSOR_LINK ||
1500                     view->cursor == EV_VIEW_CURSOR_IBEAM)
1501                         ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
1502         }
1503         return;
1504 }
1505
1506 /*** GtkWidget implementation ***/
1507
1508 static void
1509 ev_view_size_request_continuous_dual_page (EvView         *view,
1510                                            GtkRequisition *requisition)
1511 {
1512         int max_width;
1513         gint n_pages;
1514         GtkBorder border;
1515
1516         ev_page_cache_get_max_width (view->page_cache, view->rotation,
1517                                      view->scale, &max_width);
1518         compute_border (view, max_width, max_width, &border);
1519
1520         n_pages = ev_page_cache_get_n_pages (view->page_cache) + 1;
1521
1522         requisition->width = (max_width + border.left + border.right) * 2 + (view->spacing * 3);
1523         get_page_y_offset (view, n_pages, view->scale, &requisition->height);
1524
1525         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
1526                 requisition->width = 1;
1527         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
1528                 requisition->width = 1;
1529                 /* FIXME: This could actually be set on one page docs or docs
1530                  * with a strange aspect ratio. */
1531                 /* requisition->height = 1;*/
1532         }
1533 }
1534
1535 static void
1536 ev_view_size_request_continuous (EvView         *view,
1537                                  GtkRequisition *requisition)
1538 {
1539         int max_width;
1540         int n_pages;
1541         GtkBorder border;
1542
1543
1544         ev_page_cache_get_max_width (view->page_cache, view->rotation,
1545                                      view->scale, &max_width);
1546         n_pages = ev_page_cache_get_n_pages (view->page_cache);
1547         compute_border (view, max_width, max_width, &border);
1548
1549         requisition->width = max_width + (view->spacing * 2) + border.left + border.right;
1550         get_page_y_offset (view, n_pages, view->scale, &requisition->height);
1551
1552         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
1553                 requisition->width = 1;
1554         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
1555                 requisition->width = 1;
1556                 /* FIXME: This could actually be set on one page docs or docs
1557                  * with a strange aspect ratio. */
1558                 /* requisition->height = 1;*/
1559         }
1560 }
1561
1562 static void
1563 ev_view_size_request_dual_page (EvView         *view,
1564                                 GtkRequisition *requisition)
1565 {
1566         GtkBorder border;
1567         gint width, height;
1568
1569         /* Find the largest of the two. */
1570         ev_page_cache_get_size (view->page_cache,
1571                                 view->current_page,
1572                                 view->rotation,
1573                                 view->scale,
1574                                 &width, &height);
1575         if (view->current_page + 1 < ev_page_cache_get_n_pages (view->page_cache)) {
1576                 gint width_2, height_2;
1577                 ev_page_cache_get_size (view->page_cache,
1578                                         view->current_page + 1,
1579                                         view->rotation,
1580                                         view->scale,
1581                                         &width_2, &height_2);
1582                 if (width_2 > width) {
1583                         width = width_2;
1584                         height = height_2;
1585                 }
1586         }
1587         compute_border (view, width, height, &border);
1588
1589         requisition->width = ((width + border.left + border.right) * 2) +
1590                 (view->spacing * 3);
1591         requisition->height = (height + border.top + border.bottom) +
1592                 (view->spacing * 2);
1593
1594         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
1595                 requisition->width = 1;
1596         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
1597                 requisition->width = 1;
1598                 requisition->height = 1;
1599         }
1600 }
1601
1602 static void
1603 ev_view_size_request_single_page (EvView         *view,
1604                                   GtkRequisition *requisition)
1605 {
1606         GtkBorder border;
1607         gint width, height;
1608
1609         ev_page_cache_get_size (view->page_cache,
1610                                 view->current_page,
1611                                 view->rotation,
1612                                 view->scale,
1613                                 &width, &height);
1614         compute_border (view, width, height, &border);
1615
1616         requisition->width = width + border.left + border.right + (2 * view->spacing);
1617         requisition->height = height + border.top + border.bottom + (2 * view->spacing);
1618
1619         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
1620                 requisition->width = 1;
1621                 requisition->height = height + border.top + border.bottom + (2 * view->spacing);
1622         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
1623                 requisition->width = 1;
1624                 requisition->height = 1;
1625         }
1626 }
1627
1628 static void
1629 ev_view_size_request (GtkWidget      *widget,
1630                       GtkRequisition *requisition)
1631 {
1632         EvView *view = EV_VIEW (widget);
1633
1634         if (view->document == NULL) {
1635                 requisition->width = 1;
1636                 requisition->height = 1;
1637                 return;
1638         }
1639
1640         if (view->presentation) {
1641                 requisition->width = 1;
1642                 requisition->height = 1;
1643                 return;
1644         }
1645
1646         if (view->continuous && view->dual_page)
1647                 ev_view_size_request_continuous_dual_page (view, requisition);
1648         else if (view->continuous)
1649                 ev_view_size_request_continuous (view, requisition);
1650         else if (view->dual_page)
1651                 ev_view_size_request_dual_page (view, requisition);
1652         else
1653                 ev_view_size_request_single_page (view, requisition);
1654 }
1655
1656 static void
1657 ev_view_size_allocate (GtkWidget      *widget,
1658                        GtkAllocation  *allocation)
1659 {
1660         EvView *view = EV_VIEW (widget);
1661
1662         if (view->sizing_mode == EV_SIZING_FIT_WIDTH ||
1663             view->sizing_mode == EV_SIZING_BEST_FIT) {
1664
1665                 g_signal_emit (view, signals[SIGNAL_ZOOM_INVALID], 0);
1666
1667                 ev_view_size_request (widget, &widget->requisition);
1668         }
1669
1670         view_set_adjustment_values (view, GTK_ORIENTATION_HORIZONTAL);
1671         view_set_adjustment_values (view, GTK_ORIENTATION_VERTICAL);
1672
1673         if (view->document)
1674                 view_update_range_and_current_page (view);
1675
1676         view->pending_scroll = SCROLL_TO_KEEP_POSITION;
1677         view->pending_resize = FALSE;
1678
1679         GTK_WIDGET_CLASS (ev_view_parent_class)->size_allocate (widget, allocation);
1680 }
1681
1682 static void
1683 ev_view_realize (GtkWidget *widget)
1684 {
1685         EvView *view = EV_VIEW (widget);
1686         GdkWindowAttr attributes;
1687
1688         GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
1689
1690
1691         attributes.window_type = GDK_WINDOW_CHILD;
1692         attributes.wclass = GDK_INPUT_OUTPUT;
1693         attributes.visual = gtk_widget_get_visual (widget);
1694         attributes.colormap = gtk_widget_get_colormap (widget);
1695
1696         attributes.x = widget->allocation.x;
1697         attributes.y = widget->allocation.y;
1698         attributes.width = widget->allocation.width;
1699         attributes.height = widget->allocation.height;
1700         attributes.event_mask = GDK_EXPOSURE_MASK |
1701                                 GDK_BUTTON_PRESS_MASK |
1702                                 GDK_BUTTON_RELEASE_MASK |
1703                                 GDK_SCROLL_MASK |
1704                                 GDK_KEY_PRESS_MASK |
1705                                 GDK_POINTER_MOTION_MASK |
1706                                 GDK_POINTER_MOTION_HINT_MASK |
1707                                 GDK_ENTER_NOTIFY_MASK |
1708                                 GDK_LEAVE_NOTIFY_MASK;
1709
1710         widget->window = gdk_window_new (gtk_widget_get_parent_window (widget),
1711                                          &attributes,
1712                                          GDK_WA_X | GDK_WA_Y |
1713                                          GDK_WA_COLORMAP |
1714                                          GDK_WA_VISUAL);
1715         gdk_window_set_user_data (widget->window, widget);
1716         widget->style = gtk_style_attach (widget->style, widget->window);
1717
1718         if (view->presentation)
1719                 gdk_window_set_background (widget->window, &widget->style->black);
1720         else
1721                 gdk_window_set_background (widget->window, &widget->style->mid [GTK_STATE_NORMAL]);
1722 }
1723
1724 static gboolean
1725 ev_view_scroll_event (GtkWidget *widget, GdkEventScroll *event)
1726 {
1727         EvView *view = EV_VIEW (widget);
1728         guint state;
1729
1730         state = event->state & gtk_accelerator_get_default_mod_mask ();
1731
1732         if (state == GDK_CONTROL_MASK && view->presentation == FALSE) {
1733                 ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1734
1735                 if (event->direction == GDK_SCROLL_UP ||
1736                     event->direction == GDK_SCROLL_LEFT) {
1737                         if (ev_view_can_zoom_in (view)) {
1738                                 ev_view_zoom_in (view);
1739                         }
1740                 } else {
1741                         if (ev_view_can_zoom_out (view)) {
1742                                 ev_view_zoom_out (view);
1743                         }
1744                 }
1745
1746                 return TRUE;
1747         }
1748
1749         view->jump_to_find_result = FALSE;
1750         /* Shift+Wheel scrolls the in the perpendicular direction */
1751         if (state & GDK_SHIFT_MASK) {
1752                 if (event->direction == GDK_SCROLL_UP)
1753                         event->direction = GDK_SCROLL_LEFT;
1754                 if (event->direction == GDK_SCROLL_LEFT)
1755                         event->direction = GDK_SCROLL_UP;
1756                 if (event->direction == GDK_SCROLL_DOWN)
1757                         event->direction = GDK_SCROLL_RIGHT;
1758                 if (event->direction == GDK_SCROLL_RIGHT)
1759                         event->direction = GDK_SCROLL_DOWN;
1760
1761                 event->state &= ~GDK_SHIFT_MASK;
1762                 state &= ~GDK_SHIFT_MASK;
1763         }
1764
1765         if (state == 0 && view->presentation) {
1766                 switch (event->direction) {
1767                         case GDK_SCROLL_DOWN:
1768                         case GDK_SCROLL_RIGHT:
1769                                 ev_view_next_page (view);
1770                                 break;
1771                         case GDK_SCROLL_UP:
1772                         case GDK_SCROLL_LEFT:
1773                                 ev_view_previous_page (view);
1774                                 break;
1775                 }
1776
1777                 return TRUE;
1778         }
1779
1780         return FALSE;
1781 }
1782
1783 static EvViewSelection *
1784 find_selection_for_page (EvView *view,
1785                          gint    page)
1786 {
1787         GList *list;
1788
1789         for (list = view->selection_info.selections; list != NULL; list = list->next) {
1790                 EvViewSelection *selection;
1791
1792                 selection = (EvViewSelection *) list->data;
1793
1794                 if (selection->page == page)
1795                         return selection;
1796         }
1797
1798         return NULL;
1799 }
1800
1801 static void
1802 draw_end_presentation_page (EvView       *view,
1803                             GdkRectangle *page_area)
1804 {
1805         PangoLayout *layout;
1806         PangoFontDescription *font_desc;
1807         gchar *markup;
1808         const gchar *text = _("End of presentation. Press Escape to exit.");
1809
1810         if (view->presentation_state != EV_PRESENTATION_END)
1811                 return;
1812
1813         layout = gtk_widget_create_pango_layout (GTK_WIDGET (view), NULL);
1814         markup = g_strdup_printf ("<span foreground=\"white\">%s</span>", text);
1815         pango_layout_set_markup (layout, markup, -1);
1816         g_free (markup);
1817
1818         font_desc = pango_font_description_new ();
1819         pango_font_description_set_size (font_desc, 16 * PANGO_SCALE);
1820         pango_layout_set_font_description (layout, font_desc);
1821
1822         gtk_paint_layout (GTK_WIDGET (view)->style,
1823                           GTK_WIDGET (view)->window,
1824                           GTK_WIDGET_STATE (view),
1825                           FALSE,
1826                           page_area,
1827                           GTK_WIDGET (view),
1828                           NULL,
1829                           page_area->x + 15,
1830                           page_area->y + 15,
1831                           layout);
1832
1833         pango_font_description_free (font_desc);
1834         g_object_unref (layout);
1835 }
1836
1837 static gboolean
1838 ev_view_expose_event (GtkWidget      *widget,
1839                       GdkEventExpose *event)
1840 {
1841         EvView *view = EV_VIEW (widget);
1842         int i;
1843
1844         if (view->presentation) {
1845                 switch (view->presentation_state) {
1846                         case EV_PRESENTATION_END: {
1847                                 GdkRectangle area = {0};
1848
1849                                 area.width = widget->allocation.width;
1850                                 area.height = widget->allocation.height;
1851
1852                                 draw_end_presentation_page (view, &area);
1853                         }
1854                                 return FALSE;
1855                         case EV_PRESENTATION_BLACK:
1856                         case EV_PRESENTATION_WHITE:
1857                                 return FALSE;
1858                         case EV_PRESENTATION_NORMAL:
1859                         default:
1860                                 break;
1861                 }
1862         }
1863
1864         if (view->loading) {
1865                 GdkRectangle area = {0};
1866
1867                 area.width = widget->allocation.width;
1868                 area.height = widget->allocation.height;
1869
1870                 draw_loading_text (view,
1871                                    &area,
1872                                    &(event->area));
1873         }
1874
1875         if (view->document == NULL)
1876                 return FALSE;
1877
1878         for (i = view->start_page; i <= view->end_page; i++) {
1879                 GdkRectangle page_area;
1880                 GtkBorder border;
1881                 gboolean page_ready = TRUE;
1882
1883                 if (!get_page_extents (view, i, &page_area, &border))
1884                         continue;
1885
1886                 page_area.x -= view->scroll_x;
1887                 page_area.y -= view->scroll_y;
1888
1889                 draw_one_page (view, i, &page_area, &border, &(event->area), &page_ready);
1890
1891                 if (page_ready && EV_IS_DOCUMENT_FIND (view->document))
1892                         highlight_find_results (view, i);
1893         }
1894
1895         return FALSE;
1896 }
1897
1898 static gboolean
1899 ev_view_popup_menu (GtkWidget *widget)
1900 {
1901     gint x, y;
1902     EvLink *link;
1903     EvView *view = EV_VIEW (widget);
1904
1905     gtk_widget_get_pointer (widget, &x, &y);
1906     link = ev_view_get_link_at_location (view, x, y);
1907     g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, link);
1908     return TRUE;
1909 }
1910
1911 static gboolean
1912 ev_view_button_press_event (GtkWidget      *widget,
1913                             GdkEventButton *event)
1914 {
1915         EvView *view = EV_VIEW (widget);
1916         EvLink *link;
1917
1918         if (!GTK_WIDGET_HAS_FOCUS (widget)) {
1919                 gtk_widget_grab_focus (widget);
1920         }
1921
1922         view->pressed_button = event->button;
1923         view->selection_info.in_drag = FALSE;
1924
1925         switch (event->button) {
1926                 case 1:
1927                         if (view->selection_info.selections) {
1928                                 if (location_in_selected_text (view,
1929                                                                event->x + view->scroll_x,
1930                                                                event->y + view->scroll_y)) {
1931                                         view->selection_info.in_drag = TRUE;
1932                                 } else {
1933                                         clear_selection (view);
1934                                 }
1935
1936                                 gtk_widget_queue_draw (widget);
1937                         }
1938
1939                         view->selection_info.start.x = event->x + view->scroll_x;
1940                         view->selection_info.start.y = event->y + view->scroll_y;
1941
1942                         return TRUE;
1943                 case 2:
1944                         /* use root coordinates as reference point because
1945                          * scrolling changes window relative coordinates */
1946                         view->drag_info.start.x = event->x_root;
1947                         view->drag_info.start.y = event->y_root;
1948                         view->drag_info.hadj = gtk_adjustment_get_value (view->hadjustment);
1949                         view->drag_info.vadj = gtk_adjustment_get_value (view->vadjustment);
1950
1951                         ev_view_set_cursor (view, EV_VIEW_CURSOR_DRAG);
1952
1953                         return TRUE;
1954                 case 3:
1955                         link = ev_view_get_link_at_location (view, event->x, event->y);
1956                         g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, link);
1957                         return TRUE;
1958         }
1959
1960         return FALSE;
1961 }
1962
1963 static void
1964 ev_view_drag_data_get (GtkWidget        *widget,
1965                        GdkDragContext   *context,
1966                        GtkSelectionData *selection_data,
1967                        guint             info,
1968                        guint             time)
1969 {
1970         EvView *view = EV_VIEW (widget);
1971
1972         if (view->selection_info.selections &&
1973             ev_document_can_get_text (view->document)) {
1974                 gchar *text;
1975
1976                 text = get_selected_text (view);
1977
1978                 gtk_selection_data_set_text (selection_data, text, strlen (text));
1979
1980                 g_free (text);
1981         }
1982 }
1983
1984 static gboolean
1985 selection_update_idle_cb (EvView *view)
1986 {
1987         compute_selections (view, &view->selection_info.start, &view->motion);
1988         view->selection_update_id = 0;
1989         return FALSE;
1990 }
1991
1992 static gboolean
1993 selection_scroll_timeout_cb (EvView *view)
1994 {
1995         gint x, y, shift = 0;
1996         GtkWidget *widget = GTK_WIDGET (view);
1997
1998         gtk_widget_get_pointer (widget, &x, &y);
1999
2000         if (y > widget->allocation.height) {
2001                 shift = (y - widget->allocation.height) / 2;
2002         } else if (y < 0) {
2003                 shift = y / 2;
2004         }
2005
2006         if (shift)
2007                 gtk_adjustment_set_value (view->vadjustment,
2008                                           CLAMP (view->vadjustment->value + shift,
2009                                           view->vadjustment->lower,
2010                                           view->vadjustment->upper -
2011                                           view->vadjustment->page_size));
2012
2013         if (x > widget->allocation.width) {
2014                 shift = (x - widget->allocation.width) / 2;
2015         } else if (x < 0) {
2016                 shift = x / 2;
2017         }
2018
2019         if (shift)
2020                 gtk_adjustment_set_value (view->hadjustment,
2021                                           CLAMP (view->hadjustment->value + shift,
2022                                           view->hadjustment->lower,
2023                                           view->hadjustment->upper -
2024                                           view->hadjustment->page_size));
2025
2026         return TRUE;
2027 }
2028
2029 static gboolean
2030 ev_view_motion_notify_event (GtkWidget      *widget,
2031                              GdkEventMotion *event)
2032 {
2033         EvView *view = EV_VIEW (widget);
2034         gint x, y;
2035
2036         if (!view->document)
2037                 return FALSE;
2038
2039         if (event->is_hint || event->window != widget->window) {
2040             gtk_widget_get_pointer (widget, &x, &y);
2041         } else {
2042             x = event->x;
2043             y = event->y;
2044         }
2045
2046         if (view->selection_info.in_drag) {
2047                 if (gtk_drag_check_threshold (widget,
2048                                               view->selection_info.start.x,
2049                                               view->selection_info.start.y,
2050                                               x, y)) {
2051                         GdkDragContext *context;
2052                         GtkTargetList *target_list = gtk_target_list_new (NULL, 0);
2053
2054                         gtk_target_list_add_text_targets (target_list, 0);
2055
2056                         context = gtk_drag_begin (widget, target_list,
2057                                                   GDK_ACTION_COPY,
2058                                                   1, (GdkEvent *)event);
2059
2060                         view->selection_info.in_drag = FALSE;
2061
2062                         gtk_target_list_unref (target_list);
2063
2064                         return TRUE;
2065                 }
2066         }
2067
2068         /* For the Evince 0.4.x release, we limit selection to un-rotated
2069          * documents only.
2070          */
2071         if (view->pressed_button == 1 && view->rotation == 0) {
2072
2073                 /* Schedule timeout to scroll during selection and additionally
2074                  * scroll once to allow arbitrary speed. */
2075                 if (!view->selection_scroll_id)
2076                     view->selection_scroll_id = g_timeout_add (SCROLL_TIME, (GSourceFunc)selection_scroll_timeout_cb, view);
2077                 else
2078                     selection_scroll_timeout_cb (view);
2079
2080                 view->selection_info.in_selection = TRUE;
2081                 view->motion.x = x + view->scroll_x;
2082                 view->motion.y = y + view->scroll_y;
2083
2084                 /* Queue an idle to handle the motion.  We do this because
2085                  * handling any selection events in the motion could be slower
2086                  * than new motion events reach us.  We always put it in the
2087                  * idle to make sure we catch up and don't visibly lag the
2088                  * mouse. */
2089                 if (!view->selection_update_id)
2090                         view->selection_update_id = g_idle_add ((GSourceFunc)selection_update_idle_cb, view);
2091
2092                 return TRUE;
2093         } else if (view->pressed_button == 2) {
2094                 if (!view->drag_info.in_drag) {
2095                         gboolean start;
2096
2097                         start = gtk_drag_check_threshold (widget,
2098                                                           view->drag_info.start.x,
2099                                                           view->drag_info.start.y,
2100                                                           event->x_root,
2101                                                           event->y_root);
2102                         view->drag_info.in_drag = start;
2103                 }
2104
2105                 if (view->drag_info.in_drag) {
2106                         int dx, dy;
2107                         gdouble dhadj_value, dvadj_value;
2108
2109                         dx = event->x_root - view->drag_info.start.x;
2110                         dy = event->y_root - view->drag_info.start.y;
2111
2112                         dhadj_value = view->hadjustment->page_size *
2113                                       (gdouble)dx / widget->allocation.width;
2114                         dvadj_value = view->vadjustment->page_size *
2115                                       (gdouble)dy / widget->allocation.height;
2116
2117                         /* clamp scrolling to visible area */
2118                         gtk_adjustment_set_value (view->hadjustment,
2119                                                   MIN(view->drag_info.hadj - dhadj_value,
2120                                                       view->hadjustment->upper -
2121                                                       view->hadjustment->page_size));
2122                         gtk_adjustment_set_value (view->vadjustment,
2123                                                   MIN(view->drag_info.vadj - dvadj_value,
2124                                                       view->vadjustment->upper -
2125                                                       view->vadjustment->page_size));
2126
2127                         return TRUE;
2128                 }
2129         } else if (view->pressed_button <= 0) {
2130                 handle_link_over_xy (view, x, y);
2131                 return TRUE;
2132         }
2133
2134         return FALSE;
2135 }
2136
2137 static gboolean
2138 ev_view_button_release_event (GtkWidget      *widget,
2139                               GdkEventButton *event)
2140 {
2141         EvView *view = EV_VIEW (widget);
2142         EvLink *link;
2143
2144         if (view->pressed_button == 2) {
2145                 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
2146         }
2147
2148         if (view->document && view->pressed_button == 1) {
2149                 link = ev_view_get_link_at_location (view, event->x, event->y);
2150         } else {
2151                 link = NULL;
2152         }
2153
2154         view->pressed_button = -1;
2155         view->drag_info.in_drag = FALSE;
2156
2157         if (view->selection_scroll_id) {
2158             g_source_remove (view->selection_scroll_id);
2159             view->selection_scroll_id = 0;
2160         }
2161         if (view->selection_update_id) {
2162             g_source_remove (view->selection_update_id);
2163             view->selection_update_id = 0;
2164         }
2165
2166         if (view->selection_info.selections) {
2167                 ev_view_update_primary_selection (view);
2168
2169                 if (view->selection_info.in_drag) {
2170                         clear_selection (view);
2171                         gtk_widget_queue_draw (widget);
2172                 }
2173
2174                 view->selection_info.in_drag = FALSE;
2175         } else if (link) {
2176                 ev_view_handle_link (view, link);
2177         } else if (view->presentation) {
2178                 switch (event->button) {
2179                         case 1:
2180                                 ev_view_next_page (view);
2181                                 return TRUE;
2182                         case 3:
2183                                 ev_view_previous_page (view);
2184                                 return TRUE;
2185                 }
2186         }
2187
2188         return FALSE;
2189 }
2190
2191 /* Goto Window */
2192 /* Cut and paste from gtkwindow.c */
2193 static void
2194 send_focus_change (GtkWidget *widget,
2195                    gboolean   in)
2196 {
2197         GdkEvent *fevent = gdk_event_new (GDK_FOCUS_CHANGE);
2198
2199         g_object_ref (widget);
2200
2201         if (in)
2202                 GTK_WIDGET_SET_FLAGS (widget, GTK_HAS_FOCUS);
2203         else
2204                 GTK_WIDGET_UNSET_FLAGS (widget, GTK_HAS_FOCUS);
2205
2206         fevent->focus_change.type = GDK_FOCUS_CHANGE;
2207         fevent->focus_change.window = g_object_ref (widget->window);
2208         fevent->focus_change.in = in;
2209
2210         gtk_widget_event (widget, fevent);
2211
2212         g_object_notify (G_OBJECT (widget), "has-focus");
2213
2214         g_object_unref (widget);
2215         gdk_event_free (fevent);
2216 }
2217
2218 static void
2219 ev_view_goto_window_hide (EvView *view)
2220 {
2221         /* send focus-in event */
2222         send_focus_change (view->goto_entry, FALSE);
2223         gtk_widget_hide (view->goto_window);
2224         gtk_entry_set_text (GTK_ENTRY (view->goto_entry), "");
2225 }
2226
2227 static gboolean
2228 ev_view_goto_window_delete_event (GtkWidget   *widget,
2229                                   GdkEventAny *event,
2230                                   EvView      *view)
2231 {
2232         ev_view_goto_window_hide (view);
2233
2234         return TRUE;
2235 }
2236
2237 static gboolean
2238 key_is_numeric (guint keyval)
2239 {
2240         return ((keyval >= GDK_0 && keyval <= GDK_9) ||
2241                 (keyval >= GDK_KP_0 && keyval <= GDK_KP_9));
2242 }
2243
2244 static gboolean
2245 ev_view_goto_window_key_press_event (GtkWidget   *widget,
2246                                      GdkEventKey *event,
2247                                      EvView      *view)
2248 {
2249         switch (event->keyval) {
2250                 case GDK_Escape:
2251                 case GDK_Tab:
2252                 case GDK_KP_Tab:
2253                 case GDK_ISO_Left_Tab:
2254                         ev_view_goto_window_hide (view);
2255                         return TRUE;
2256                 case GDK_Return:
2257                 case GDK_KP_Enter:
2258                 case GDK_ISO_Enter:
2259                         return FALSE;
2260                 default:
2261                         if (!key_is_numeric (event->keyval))
2262                                 return TRUE;
2263         }
2264
2265         return FALSE;
2266 }
2267
2268 static gboolean
2269 ev_view_goto_window_button_press_event (GtkWidget      *widget,
2270                                         GdkEventButton *event,
2271                                         EvView         *view)
2272 {
2273         ev_view_goto_window_hide (view);
2274
2275         return TRUE;
2276 }
2277
2278 static void
2279 ev_view_goto_entry_activate (GtkEntry *entry,
2280                              EvView   *view)
2281 {
2282         const gchar *text;
2283         gint         page;
2284
2285         text = gtk_entry_get_text (entry);
2286         page = atoi (text) - 1;
2287
2288         ev_view_goto_window_hide (view);
2289
2290         if (page >= 0 &&
2291             page < ev_page_cache_get_n_pages (view->page_cache))
2292                 ev_page_cache_set_current_page (view->page_cache, page);
2293 }
2294
2295 static void
2296 ev_view_goto_window_create (EvView *view)
2297 {
2298         GtkWidget *frame, *hbox, *toplevel, *label;
2299
2300         toplevel = gtk_widget_get_toplevel (GTK_WIDGET (view));
2301
2302         if (view->goto_window) {
2303                 if (GTK_WINDOW (toplevel)->group)
2304                         gtk_window_group_add_window (GTK_WINDOW (toplevel)->group,
2305                                                      GTK_WINDOW (view->goto_window));
2306                 else if (GTK_WINDOW (view->goto_window)->group)
2307                         gtk_window_group_remove_window (GTK_WINDOW (view->goto_window)->group,
2308                                                         GTK_WINDOW (view->goto_window));
2309                 return;
2310         }
2311
2312         view->goto_window = gtk_window_new (GTK_WINDOW_POPUP);
2313
2314         if (GTK_WINDOW (toplevel)->group)
2315                 gtk_window_group_add_window (GTK_WINDOW (toplevel)->group,
2316                                              GTK_WINDOW (view->goto_window));
2317
2318         gtk_window_set_modal (GTK_WINDOW (view->goto_window), TRUE);
2319
2320         g_signal_connect (view->goto_window, "delete_event",
2321                           G_CALLBACK (ev_view_goto_window_delete_event),
2322                           view);
2323         g_signal_connect (view->goto_window, "key_press_event",
2324                           G_CALLBACK (ev_view_goto_window_key_press_event),
2325                           view);
2326         g_signal_connect (view->goto_window, "button_press_event",
2327                           G_CALLBACK (ev_view_goto_window_button_press_event),
2328                           view);
2329
2330         frame = gtk_frame_new (NULL);
2331         gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_ETCHED_IN);
2332         gtk_container_add (GTK_CONTAINER (view->goto_window), frame);
2333         gtk_widget_show (frame);
2334
2335         hbox = gtk_hbox_new (FALSE, 0);
2336         gtk_container_set_border_width (GTK_CONTAINER (hbox), 3);
2337         gtk_container_add (GTK_CONTAINER (frame), hbox);
2338         gtk_widget_show (hbox);
2339
2340         label = gtk_label_new(_("Jump to page:"));
2341         gtk_box_pack_start (GTK_BOX (hbox), label, TRUE, TRUE, 3);
2342         gtk_widget_show (label);
2343         gtk_widget_realize (label);
2344
2345         view->goto_entry = gtk_entry_new ();
2346         g_signal_connect (view->goto_entry, "activate",
2347                           G_CALLBACK (ev_view_goto_entry_activate),
2348                           view);
2349         gtk_box_pack_start_defaults (GTK_BOX (hbox), view->goto_entry);
2350         gtk_widget_show (view->goto_entry);
2351         gtk_widget_realize (view->goto_entry);
2352 }
2353
2354 static void
2355 ev_view_goto_entry_grab_focus (EvView *view)
2356 {
2357         GtkWidgetClass *entry_parent_class;
2358
2359         entry_parent_class = g_type_class_peek_parent (GTK_ENTRY_GET_CLASS (view->goto_entry));
2360         (entry_parent_class->grab_focus) (view->goto_entry);
2361
2362         send_focus_change (view->goto_entry, TRUE);
2363 }
2364
2365 static void
2366 ev_view_goto_window_send_key_event (EvView   *view,
2367                                     GdkEvent *event)
2368 {
2369         GdkEventKey *new_event;
2370         GdkScreen   *screen;
2371
2372         /* Move goto window off screen */
2373         screen = gtk_widget_get_screen (GTK_WIDGET (view));
2374         gtk_window_move (GTK_WINDOW (view->goto_window),
2375                          gdk_screen_get_width (screen) + 1,
2376                          gdk_screen_get_height (screen) + 1);
2377         gtk_widget_show (view->goto_window);
2378
2379         new_event = (GdkEventKey *) gdk_event_copy (event);
2380         g_object_unref (new_event->window);
2381         new_event->window = g_object_ref (view->goto_window->window);
2382         gtk_widget_realize (view->goto_window);
2383
2384         gtk_widget_event (view->goto_window, (GdkEvent *)new_event);
2385         gdk_event_free ((GdkEvent *)new_event);
2386         gtk_widget_hide (view->goto_window);
2387 }
2388
2389 static gboolean
2390 ev_view_key_press_event (GtkWidget   *widget,
2391                          GdkEventKey *event)
2392 {
2393         EvView *view = EV_VIEW (widget);
2394         EvPresentationState current;
2395
2396         if (!view->presentation ||
2397             view->presentation_state == EV_PRESENTATION_END)
2398                 return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
2399
2400
2401         current = view->presentation_state;
2402
2403         switch (event->keyval) {
2404                 case GDK_b:
2405                 case GDK_B:
2406                         view->presentation_state =
2407                                 (view->presentation_state == EV_PRESENTATION_BLACK) ?
2408                                 EV_PRESENTATION_NORMAL : EV_PRESENTATION_BLACK;
2409                         break;
2410                 case GDK_w:
2411                 case GDK_W:
2412                         view->presentation_state =
2413                                 (view->presentation_state == EV_PRESENTATION_WHITE) ?
2414                                 EV_PRESENTATION_NORMAL : EV_PRESENTATION_WHITE;
2415                         break;
2416                 default:
2417                         if (view->presentation_state == EV_PRESENTATION_BLACK ||
2418                             view->presentation_state == EV_PRESENTATION_WHITE) {
2419                                 view->presentation_state = EV_PRESENTATION_NORMAL;
2420                         }
2421         }
2422
2423         if (current == view->presentation_state) {
2424                 if (ev_page_cache_get_n_pages (view->page_cache) > 1 &&
2425                     key_is_numeric (event->keyval)) {
2426                         gint x, y;
2427
2428                         ev_view_goto_window_create (view);
2429                         ev_view_goto_window_send_key_event (view, (GdkEvent *)event);
2430                         gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
2431                         gtk_window_move (GTK_WINDOW (view->goto_window), x, y);
2432                         gtk_widget_show (view->goto_window);
2433                         ev_view_goto_entry_grab_focus (view);
2434
2435                         return TRUE;
2436                 }
2437
2438                 return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
2439         }
2440
2441         switch (view->presentation_state) {
2442                 case EV_PRESENTATION_NORMAL:
2443                 case EV_PRESENTATION_BLACK:
2444                         gdk_window_set_background (widget->window,
2445                                                    &widget->style->black);
2446                         break;
2447                 case EV_PRESENTATION_WHITE:
2448                         gdk_window_set_background (widget->window,
2449                                                    &widget->style->white);
2450                         break;
2451                 default:
2452                         return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
2453         }
2454
2455         gtk_widget_queue_draw (widget);
2456         return TRUE;
2457 }
2458
2459 static gint
2460 ev_view_focus_in (GtkWidget     *widget,
2461                   GdkEventFocus *event)
2462 {
2463         if (EV_VIEW (widget)->pixbuf_cache)
2464                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
2465         gtk_widget_queue_draw (widget);
2466
2467         return FALSE;
2468 }
2469
2470 static gint
2471 ev_view_focus_out (GtkWidget     *widget,
2472                      GdkEventFocus *event)
2473 {
2474         if (EV_VIEW (widget)->goto_window)
2475                 ev_view_goto_window_hide (EV_VIEW (widget));
2476
2477         if (EV_VIEW (widget)->pixbuf_cache)
2478                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
2479         gtk_widget_queue_draw (widget);
2480
2481         return FALSE;
2482 }
2483
2484 static gboolean
2485 ev_view_leave_notify_event (GtkWidget *widget, GdkEventCrossing   *event)
2486 {
2487         EvView *view = EV_VIEW (widget);
2488
2489         ev_view_set_status (view, NULL);
2490
2491         if (view->cursor == EV_VIEW_CURSOR_LINK ||
2492             view->cursor == EV_VIEW_CURSOR_IBEAM)
2493                 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
2494
2495         if (view->link_tooltip) {
2496                 view->hovered_link = NULL;
2497                 ev_tooltip_deactivate (EV_TOOLTIP (view->link_tooltip));
2498         }
2499
2500         return FALSE;
2501 }
2502
2503 static gboolean
2504 ev_view_enter_notify_event (GtkWidget *widget, GdkEventCrossing   *event)
2505 {
2506         EvView *view = EV_VIEW (widget);
2507
2508         handle_link_over_xy (view, event->x, event->y);
2509
2510         return FALSE;
2511 }
2512
2513 static void
2514 ev_view_style_set (GtkWidget *widget,
2515                    GtkStyle  *old_style)
2516 {
2517         if (EV_VIEW (widget)->pixbuf_cache)
2518                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
2519
2520         GTK_WIDGET_CLASS (ev_view_parent_class)->style_set (widget, old_style);
2521 }
2522
2523 /*** Drawing ***/
2524
2525 static guint32
2526 ev_gdk_color_to_rgb (const GdkColor *color)
2527 {
2528   guint32 result;
2529   result = (0xff0000 | (color->red & 0xff00));
2530   result <<= 8;
2531   result |= ((color->green & 0xff00) | (color->blue >> 8));
2532   return result;
2533 }
2534
2535 static void
2536 draw_rubberband (GtkWidget *widget, GdkWindow *window,
2537                  const GdkRectangle *rect, guchar alpha)
2538 {
2539         GdkGC *gc;
2540         GdkPixbuf *pixbuf;
2541         GdkColor *fill_color_gdk;
2542         guint fill_color;
2543
2544         fill_color_gdk = gdk_color_copy (&GTK_WIDGET (widget)->style->base[GTK_STATE_SELECTED]);
2545         fill_color = ev_gdk_color_to_rgb (fill_color_gdk) << 8 | alpha;
2546
2547         pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE, 8,
2548                                  rect->width, rect->height);
2549         gdk_pixbuf_fill (pixbuf, fill_color);
2550
2551         gdk_draw_pixbuf (window, NULL, pixbuf,
2552                          0, 0,
2553                          rect->x - EV_VIEW (widget)->scroll_x, rect->y - EV_VIEW (widget)->scroll_y,
2554                          rect->width, rect->height,
2555                          GDK_RGB_DITHER_NONE,
2556                          0, 0);
2557
2558         g_object_unref (pixbuf);
2559
2560         gc = gdk_gc_new (window);
2561         gdk_gc_set_rgb_fg_color (gc, fill_color_gdk);
2562         gdk_draw_rectangle (window, gc, FALSE,
2563                             rect->x - EV_VIEW (widget)->scroll_x, rect->y - EV_VIEW (widget)->scroll_y,
2564                             rect->width - 1,
2565                             rect->height - 1);
2566         g_object_unref (gc);
2567
2568         gdk_color_free (fill_color_gdk);
2569 }
2570
2571
2572 static void
2573 highlight_find_results (EvView *view, int page)
2574 {
2575         EvDocumentFind *find;
2576         int i, results = 0;
2577
2578         g_return_if_fail (EV_IS_DOCUMENT_FIND (view->document));
2579
2580         find = EV_DOCUMENT_FIND (view->document);
2581
2582         results = ev_document_find_get_n_results (find, page);
2583
2584         for (i = 0; i < results; i++) {
2585                 EvRectangle rectangle;
2586                 GdkRectangle view_rectangle;
2587                 guchar alpha;
2588
2589                 if (i == view->find_result && page == view->current_page) {
2590                         alpha = 0x90;
2591                 } else {
2592                         alpha = 0x20;
2593                 }
2594
2595                 ev_document_find_get_result (find, page, i, &rectangle);
2596                 doc_rect_to_view_rect (view, page, &rectangle, &view_rectangle);
2597                 draw_rubberband (GTK_WIDGET (view), GTK_WIDGET(view)->window,
2598                                  &view_rectangle, alpha);
2599         }
2600 }
2601
2602 static void
2603 draw_loading_text (EvView       *view,
2604                    GdkRectangle *page_area,
2605                    GdkRectangle *expose_area)
2606 {
2607         const char *loading_text;
2608         PangoLayout *layout;
2609         PangoFontDescription *font_desc;
2610         PangoRectangle logical_rect;
2611         double real_scale;
2612         int target_width;
2613
2614         /* Don't annoy users with loading messages during presentations.
2615          * FIXME: Temporary "workaround" for
2616          * http://bugzilla.gnome.org/show_bug.cgi?id=320352 */
2617         if (view->presentation)
2618                 return;
2619
2620         loading_text = _("Loading...");
2621
2622         ev_document_fc_mutex_lock ();
2623
2624         layout = gtk_widget_create_pango_layout (GTK_WIDGET (view), loading_text);
2625
2626         font_desc = pango_font_description_new ();
2627
2628
2629         /* We set the font to be 10 points, get the size, and scale appropriately */
2630         pango_font_description_set_size (font_desc, 10 * PANGO_SCALE);
2631         pango_layout_set_font_description (layout, font_desc);
2632         pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
2633
2634         /* Make sure we fit the middle of the page */
2635         target_width = MAX (page_area->width / 2, 1);
2636         real_scale = ((double)target_width / (double) logical_rect.width) * (PANGO_SCALE * 10);
2637         pango_font_description_set_size (font_desc, (int)real_scale);
2638         pango_layout_set_font_description (layout, font_desc);
2639         pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
2640
2641         gtk_paint_layout (GTK_WIDGET (view)->style,
2642                           GTK_WIDGET (view)->window,
2643                           GTK_WIDGET_STATE (view),
2644                           FALSE,
2645                           page_area,
2646                           GTK_WIDGET (view),
2647                           NULL,
2648                           page_area->x + (target_width/2),
2649                           page_area->y + (page_area->height - logical_rect.height) / 2,
2650                           layout);
2651
2652         pango_font_description_free (font_desc);
2653         g_object_unref (layout);
2654
2655         ev_document_fc_mutex_unlock ();
2656 }
2657
2658 static void
2659 draw_one_page (EvView          *view,
2660                gint             page,
2661                GdkRectangle    *page_area,
2662                GtkBorder       *border,
2663                GdkRectangle    *expose_area,
2664                gboolean        *page_ready)
2665 {
2666         gint width, height;
2667         GdkPixbuf *current_pixbuf;
2668         GdkRectangle overlap;
2669         GdkRectangle real_page_area;
2670         EvViewSelection *selection;
2671         gint current_page;
2672
2673         g_assert (view->document);
2674
2675         if (! gdk_rectangle_intersect (page_area, expose_area, &overlap))
2676                 return;
2677
2678         current_page = ev_page_cache_get_current_page (view->page_cache);
2679         selection = find_selection_for_page (view, page);
2680         ev_page_cache_get_size (view->page_cache,
2681                                 page, view->rotation,
2682                                 view->scale,
2683                                 &width, &height);
2684         /* Render the document itself */
2685         real_page_area = *page_area;
2686
2687         real_page_area.x += border->left;
2688         real_page_area.y += border->top;
2689         real_page_area.width -= (border->left + border->right);
2690         real_page_area.height -= (border->top + border->bottom);
2691         *page_ready = TRUE;
2692
2693         ev_document_misc_paint_one_page (GTK_WIDGET(view)->window,
2694                                          GTK_WIDGET (view),
2695                                          page_area, border,
2696                                          page == current_page);
2697
2698         if (gdk_rectangle_intersect (&real_page_area, expose_area, &overlap)) {
2699                 GdkPixbuf *selection_pixbuf = NULL;
2700                 GdkPixbuf *scaled_image;
2701                 GdkPixbuf *scaled_selection;
2702
2703                 current_pixbuf = ev_pixbuf_cache_get_pixbuf (view->pixbuf_cache, page);
2704
2705                 /* Get the selection pixbuf iff we have something to draw */
2706                 if (current_pixbuf && view->selection_mode == EV_VIEW_SELECTION_TEXT && selection)
2707                         selection_pixbuf = ev_pixbuf_cache_get_selection_pixbuf (view->pixbuf_cache,
2708                                                                                  page,
2709                                                                                  view->scale,
2710                                                                                  NULL);
2711
2712                 if (current_pixbuf == NULL)
2713                         scaled_image = NULL;
2714                 else if (width == gdk_pixbuf_get_width (current_pixbuf) &&
2715                          height == gdk_pixbuf_get_height (current_pixbuf))
2716                         scaled_image = g_object_ref (current_pixbuf);
2717                 else
2718                         /* FIXME: We don't want to scale the whole area, just the right
2719                          * area of it */
2720                         scaled_image = gdk_pixbuf_scale_simple (current_pixbuf,
2721                                                                 width, height,
2722                                                                 GDK_INTERP_NEAREST);
2723
2724                 if (selection_pixbuf == NULL)
2725                         scaled_selection = NULL;
2726                 else if (width == gdk_pixbuf_get_width (selection_pixbuf) &&
2727                          height == gdk_pixbuf_get_height (selection_pixbuf))
2728                         scaled_selection = g_object_ref (selection_pixbuf);
2729                 else
2730                         /* FIXME: We don't want to scale the whole area, just the right
2731                          * area of it */
2732                         scaled_selection = gdk_pixbuf_scale_simple (selection_pixbuf,
2733                                                                     width, height,
2734                                                                     GDK_INTERP_NEAREST);
2735
2736                 if (scaled_image) {
2737                         gdk_draw_pixbuf (GTK_WIDGET(view)->window,
2738                                          GTK_WIDGET (view)->style->fg_gc[GTK_STATE_NORMAL],
2739                                          scaled_image,
2740                                          overlap.x - real_page_area.x,
2741                                          overlap.y - real_page_area.y,
2742                                          overlap.x, overlap.y,
2743                                          overlap.width, overlap.height,
2744                                          GDK_RGB_DITHER_NORMAL,
2745                                          0, 0);
2746                         g_object_unref (scaled_image);
2747                 } else {
2748                         draw_loading_text (view,
2749                                            &real_page_area,
2750                                            expose_area);
2751                         *page_ready = FALSE;
2752                 }
2753
2754                 if (scaled_selection) {
2755                         gdk_draw_pixbuf (GTK_WIDGET(view)->window,
2756                                          GTK_WIDGET (view)->style->fg_gc[GTK_STATE_NORMAL],
2757                                          scaled_selection,
2758                                          overlap.x - real_page_area.x,
2759                                          overlap.y - real_page_area.y,
2760                                          overlap.x, overlap.y,
2761                                          overlap.width, overlap.height,
2762                                          GDK_RGB_DITHER_NORMAL,
2763                                          0, 0);
2764                         g_object_unref (scaled_selection);
2765                 }
2766         }
2767 }
2768
2769 /*** GObject functions ***/
2770
2771 static void
2772 ev_view_finalize (GObject *object)
2773 {
2774         EvView *view = EV_VIEW (object);
2775
2776         LOG ("Finalize");
2777
2778         g_free (view->status);
2779         g_free (view->find_status);
2780
2781         clear_selection (view);
2782
2783         G_OBJECT_CLASS (ev_view_parent_class)->finalize (object);
2784 }
2785
2786 static void
2787 ev_view_destroy (GtkObject *object)
2788 {
2789         EvView *view = EV_VIEW (object);
2790
2791         if (view->document) {
2792                 g_object_unref (view->document);
2793                 view->document = NULL;
2794         }
2795
2796         if (view->pixbuf_cache) {
2797                 g_object_unref (view->pixbuf_cache);
2798                 view->pixbuf_cache = NULL;
2799         }
2800
2801         if (view->link_tooltip) {
2802                 gtk_widget_destroy (view->link_tooltip);
2803                 view->link_tooltip = NULL;
2804         }
2805
2806         if (view->goto_window) {
2807                 gtk_widget_destroy (view->goto_window);
2808                 view->goto_window = NULL;
2809                 view->goto_entry = NULL;
2810         }
2811
2812         if (view->selection_scroll_id) {
2813             g_source_remove (view->selection_scroll_id);
2814             view->selection_scroll_id = 0;
2815         }
2816
2817         if (view->selection_update_id) {
2818             g_source_remove (view->selection_update_id);
2819             view->selection_update_id = 0;
2820         }
2821
2822         ev_view_presentation_transition_stop (view);
2823
2824         ev_view_set_scroll_adjustments (view, NULL, NULL);
2825
2826         GTK_OBJECT_CLASS (ev_view_parent_class)->destroy (object);
2827 }
2828
2829 static void
2830 ev_view_set_property (GObject      *object,
2831                       guint         prop_id,
2832                       const GValue *value,
2833                       GParamSpec   *pspec)
2834 {
2835         EvView *view = EV_VIEW (object);
2836
2837         switch (prop_id) {
2838                 case PROP_CONTINUOUS:
2839                         ev_view_set_continuous (view, g_value_get_boolean (value));
2840                         break;
2841                 case PROP_DUAL_PAGE:
2842                         ev_view_set_dual_page (view, g_value_get_boolean (value));
2843                         break;
2844                 case PROP_FULLSCREEN:
2845                         ev_view_set_fullscreen (view, g_value_get_boolean (value));
2846                         break;
2847                 case PROP_PRESENTATION:
2848                         ev_view_set_presentation (view, g_value_get_boolean (value));
2849                         break;
2850                 case PROP_SIZING_MODE:
2851                         ev_view_set_sizing_mode (view, g_value_get_enum (value));
2852                         break;
2853                 case PROP_ZOOM:
2854                         ev_view_set_zoom (view, g_value_get_double (value), FALSE);
2855                         break;
2856                 case PROP_ROTATION:
2857                         ev_view_set_rotation (view, g_value_get_int (value));
2858                         break;
2859                 default:
2860                         G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
2861         }
2862 }
2863
2864 static AtkObject *
2865 ev_view_get_accessible (GtkWidget *widget)
2866 {
2867         static gboolean first_time = TRUE;
2868
2869         if (first_time) {
2870                 AtkObjectFactory *factory;
2871                 AtkRegistry *registry;
2872                 GType derived_type;
2873                 GType derived_atk_type;
2874
2875                 /*
2876                  * Figure out whether accessibility is enabled by looking at the
2877                  * type of the accessible object which would be created for
2878                  * the parent type of EvView.
2879                  */
2880                 derived_type = g_type_parent (EV_TYPE_VIEW);
2881
2882                 registry = atk_get_default_registry ();
2883                 factory = atk_registry_get_factory (registry,
2884                                                     derived_type);
2885                 derived_atk_type = atk_object_factory_get_accessible_type (factory);
2886                 if (g_type_is_a (derived_atk_type, GTK_TYPE_ACCESSIBLE))
2887                         atk_registry_set_factory_type (registry,
2888                                                        EV_TYPE_VIEW,
2889                                                        ev_view_accessible_factory_get_type ());
2890                 first_time = FALSE;
2891         }
2892         return GTK_WIDGET_CLASS (ev_view_parent_class)->get_accessible (widget);
2893 }
2894
2895 static void
2896 ev_view_get_property (GObject *object,
2897                       guint prop_id,
2898                       GValue *value,
2899                       GParamSpec *pspec)
2900 {
2901         EvView *view = EV_VIEW (object);
2902
2903         switch (prop_id) {
2904                 case PROP_STATUS:
2905                         g_value_set_string (value, view->status);
2906                         break;
2907                 case PROP_FIND_STATUS:
2908                         g_value_set_string (value, view->status);
2909                         break;
2910                 case PROP_CONTINUOUS:
2911                         g_value_set_boolean (value, view->continuous);
2912                         break;
2913                 case PROP_DUAL_PAGE:
2914                         g_value_set_boolean (value, view->dual_page);
2915                         break;
2916                 case PROP_FULLSCREEN:
2917                         g_value_set_boolean (value, view->fullscreen);
2918                         break;
2919                 case PROP_PRESENTATION:
2920                         g_value_set_boolean (value, view->presentation);
2921                         break;
2922                 case PROP_SIZING_MODE:
2923                         g_value_set_enum (value, view->sizing_mode);
2924                         break;
2925                 case PROP_ZOOM:
2926                         g_value_set_double (value, view->scale);
2927                         break;
2928                 case PROP_ROTATION:
2929                         g_value_set_int (value, view->rotation);
2930                         break;
2931                 case PROP_HAS_SELECTION:
2932                         g_value_set_boolean (value,
2933                                              view->selection_info.selections != NULL);
2934                         break;
2935                 default:
2936                         G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
2937         }
2938 }
2939
2940 static void
2941 ev_view_class_init (EvViewClass *class)
2942 {
2943         GObjectClass *object_class = G_OBJECT_CLASS (class);
2944         GtkObjectClass *gtk_object_class = GTK_OBJECT_CLASS (class);
2945         GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
2946         GtkBindingSet *binding_set;
2947
2948         object_class->finalize = ev_view_finalize;
2949         object_class->set_property = ev_view_set_property;
2950         object_class->get_property = ev_view_get_property;
2951
2952         widget_class->expose_event = ev_view_expose_event;
2953         widget_class->button_press_event = ev_view_button_press_event;
2954         widget_class->motion_notify_event = ev_view_motion_notify_event;
2955         widget_class->button_release_event = ev_view_button_release_event;
2956         widget_class->key_press_event = ev_view_key_press_event;
2957         widget_class->focus_in_event = ev_view_focus_in;
2958         widget_class->focus_out_event = ev_view_focus_out;
2959         widget_class->get_accessible = ev_view_get_accessible;
2960         widget_class->size_request = ev_view_size_request;
2961         widget_class->size_allocate = ev_view_size_allocate;
2962         widget_class->realize = ev_view_realize;
2963         widget_class->scroll_event = ev_view_scroll_event;
2964         widget_class->enter_notify_event = ev_view_enter_notify_event;
2965         widget_class->leave_notify_event = ev_view_leave_notify_event;
2966         widget_class->style_set = ev_view_style_set;
2967         widget_class->drag_data_get = ev_view_drag_data_get;
2968         widget_class->popup_menu = ev_view_popup_menu;
2969         gtk_object_class->destroy = ev_view_destroy;
2970
2971         class->set_scroll_adjustments = ev_view_set_scroll_adjustments;
2972         class->binding_activated = ev_view_scroll;
2973
2974         widget_class->set_scroll_adjustments_signal =
2975             g_signal_new ("set-scroll-adjustments",
2976                           G_OBJECT_CLASS_TYPE (object_class),
2977                           G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
2978                           G_STRUCT_OFFSET (EvViewClass, set_scroll_adjustments),
2979                           NULL, NULL,
2980                           ev_marshal_VOID__OBJECT_OBJECT,
2981                           G_TYPE_NONE, 2,
2982                           GTK_TYPE_ADJUSTMENT,
2983                           GTK_TYPE_ADJUSTMENT);
2984
2985         signals[SIGNAL_BINDING_ACTIVATED] = g_signal_new ("binding_activated",
2986                          G_TYPE_FROM_CLASS (object_class),
2987                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
2988                          G_STRUCT_OFFSET (EvViewClass, binding_activated),
2989                          NULL, NULL,
2990                          ev_marshal_VOID__ENUM_BOOLEAN,
2991                          G_TYPE_NONE, 2,
2992                          GTK_TYPE_SCROLL_TYPE,
2993                          G_TYPE_BOOLEAN);
2994
2995         signals[SIGNAL_ZOOM_INVALID] = g_signal_new ("zoom-invalid",
2996                          G_TYPE_FROM_CLASS (object_class),
2997                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
2998                          G_STRUCT_OFFSET (EvViewClass, zoom_invalid),
2999                          NULL, NULL,
3000                          ev_marshal_VOID__VOID,
3001                          G_TYPE_NONE, 0, G_TYPE_NONE);
3002         signals[SIGNAL_EXTERNAL_LINK] = g_signal_new ("external-link",
3003                          G_TYPE_FROM_CLASS (object_class),
3004                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
3005                          G_STRUCT_OFFSET (EvViewClass, external_link),
3006                          NULL, NULL,
3007                          g_cclosure_marshal_VOID__OBJECT,
3008                          G_TYPE_NONE, 1,
3009                          G_TYPE_OBJECT);
3010         signals[SIGNAL_POPUP_MENU] = g_signal_new ("popup",
3011                          G_TYPE_FROM_CLASS (object_class),
3012                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
3013                          G_STRUCT_OFFSET (EvViewClass, popup_menu),
3014                          NULL, NULL,
3015                          g_cclosure_marshal_VOID__OBJECT,
3016                          G_TYPE_NONE, 1,
3017                          G_TYPE_OBJECT);
3018
3019         g_object_class_install_property (object_class,
3020                                          PROP_STATUS,
3021                                          g_param_spec_string ("status",
3022                                                               "Status Message",
3023                                                               "The status message",
3024                                                               NULL,
3025                                                               G_PARAM_READABLE));
3026
3027         g_object_class_install_property (object_class,
3028                                          PROP_FIND_STATUS,
3029                                          g_param_spec_string ("find-status",
3030                                                               "Find Status Message",
3031                                                               "The find status message",
3032                                                               NULL,
3033                                                               G_PARAM_READABLE));
3034
3035         g_object_class_install_property (object_class,
3036                                          PROP_CONTINUOUS,
3037                                          g_param_spec_boolean ("continuous",
3038                                                                "Continuous",
3039                                                                "Continuous scrolling mode",
3040                                                                TRUE,
3041                                                                G_PARAM_READWRITE));
3042
3043         g_object_class_install_property (object_class,
3044                                          PROP_DUAL_PAGE,
3045                                          g_param_spec_boolean ("dual-page",
3046                                                                "Dual Page",
3047                                                                "Two pages visible at once",
3048                                                                FALSE,
3049                                                                G_PARAM_READWRITE));
3050         g_object_class_install_property (object_class,
3051                                          PROP_FULLSCREEN,
3052                                          g_param_spec_boolean ("fullscreen",
3053                                                                "Full Screen",
3054                                                                "Draw page in a fullscreen fashion",
3055                                                                FALSE,
3056                                                                G_PARAM_READWRITE));
3057         g_object_class_install_property (object_class,
3058                                          PROP_PRESENTATION,
3059                                          g_param_spec_boolean ("presentation",
3060                                                                "Presentation",
3061                                                                "Draw page in presentation mode",
3062                                                                TRUE,
3063                                                                G_PARAM_READWRITE));
3064
3065         g_object_class_install_property (object_class,
3066                                          PROP_SIZING_MODE,
3067                                          g_param_spec_enum ("sizing-mode",
3068                                                             "Sizing Mode",
3069                                                             "Sizing Mode",
3070                                                             EV_TYPE_SIZING_MODE,
3071                                                             EV_SIZING_FIT_WIDTH,
3072                                                             G_PARAM_READWRITE));
3073
3074         g_object_class_install_property (object_class,
3075                                          PROP_ZOOM,
3076                                          g_param_spec_double ("zoom",
3077                                                               "Zoom factor",
3078                                                                "Zoom factor",
3079                                                                MIN_SCALE,
3080                                                                MAX_SCALE,
3081                                                                1.0,
3082                                                                G_PARAM_READWRITE));
3083         g_object_class_install_property (object_class,
3084                                          PROP_ROTATION,
3085                                          g_param_spec_double ("rotation",
3086                                                               "Rotation",
3087                                                                "Rotation",
3088                                                                0,
3089                                                                360,
3090                                                                0,
3091                                                                G_PARAM_READWRITE));
3092         g_object_class_install_property (object_class,
3093                                          PROP_HAS_SELECTION,
3094                                          g_param_spec_boolean ("has-selection",
3095                                                                "Has selection",
3096                                                                "The view has selections",
3097                                                                FALSE,
3098                                                                G_PARAM_READABLE));
3099
3100         binding_set = gtk_binding_set_by_class (class);
3101
3102         add_scroll_binding_keypad (binding_set, GDK_Left,  0, EV_SCROLL_STEP_BACKWARD, TRUE);
3103         add_scroll_binding_keypad (binding_set, GDK_Right, 0, EV_SCROLL_STEP_FORWARD,  TRUE);
3104         add_scroll_binding_keypad (binding_set, GDK_Left,  GDK_MOD1_MASK, EV_SCROLL_STEP_DOWN, TRUE);
3105         add_scroll_binding_keypad (binding_set, GDK_Right, GDK_MOD1_MASK, EV_SCROLL_STEP_UP,  TRUE);
3106         add_scroll_binding_keypad (binding_set, GDK_Up,    0, EV_SCROLL_STEP_BACKWARD, FALSE);
3107         add_scroll_binding_keypad (binding_set, GDK_Down,  0, EV_SCROLL_STEP_FORWARD,  FALSE);
3108         add_scroll_binding_keypad (binding_set, GDK_Up,    GDK_MOD1_MASK, EV_SCROLL_STEP_DOWN, FALSE);
3109         add_scroll_binding_keypad (binding_set, GDK_Down,  GDK_MOD1_MASK, EV_SCROLL_STEP_UP,  FALSE);
3110 }
3111
3112 static void
3113 ev_view_init (EvView *view)
3114 {
3115         GTK_WIDGET_SET_FLAGS (view, GTK_CAN_FOCUS);
3116
3117         view->spacing = 5;
3118         view->scale = 1.0;
3119         view->current_page = 0;
3120         view->pressed_button = -1;
3121         view->cursor = EV_VIEW_CURSOR_NORMAL;
3122         view->drag_info.in_drag = FALSE;
3123         view->selection_info.selections = NULL;
3124         view->selection_info.in_selection = FALSE;
3125         view->selection_info.in_drag = FALSE;
3126         view->selection_mode = EV_VIEW_SELECTION_TEXT;
3127         view->continuous = TRUE;
3128         view->dual_page = FALSE;
3129         view->presentation = FALSE;
3130         view->presentation_state = EV_PRESENTATION_NORMAL;
3131         view->fullscreen = FALSE;
3132         view->sizing_mode = EV_SIZING_FIT_WIDTH;
3133         view->pending_scroll = SCROLL_TO_KEEP_POSITION;
3134         view->jump_to_find_result = TRUE;
3135 }
3136
3137 /*** Callbacks ***/
3138
3139 static void
3140 find_changed_cb (EvDocument *document, int page, EvView *view)
3141 {
3142         double percent;
3143         int n_pages;
3144
3145         percent = ev_document_find_get_progress
3146                         (EV_DOCUMENT_FIND (view->document));
3147         n_pages = ev_page_cache_get_n_pages (view->page_cache);
3148
3149         if (view->jump_to_find_result == TRUE) {
3150                 jump_to_find_page (view, EV_VIEW_FIND_NEXT, 0);
3151                 jump_to_find_result (view);
3152         }
3153         update_find_status_message (view, percent * n_pages >= n_pages - 1 );
3154         if (view->current_page == page)
3155                 gtk_widget_queue_draw (GTK_WIDGET (view));
3156 }
3157
3158 static void
3159 job_finished_cb (EvPixbufCache *pixbuf_cache,
3160                  EvView        *view)
3161 {
3162         gtk_widget_queue_draw (GTK_WIDGET (view));
3163 }
3164
3165 static void
3166 page_changed_cb (EvPageCache *page_cache,
3167                  int          new_page,
3168                  EvView      *view)
3169 {
3170         if (view->current_page != new_page) {
3171                 view->current_page = new_page;
3172                 view->pending_scroll = SCROLL_TO_PAGE_POSITION;
3173                 if (view->presentation)
3174                         ev_view_presentation_transition_start (view);
3175                 gtk_widget_queue_resize (GTK_WIDGET (view));
3176         } else {
3177                 gtk_widget_queue_draw (GTK_WIDGET (view));
3178         }
3179
3180         if (EV_IS_DOCUMENT_FIND (view->document)) {
3181                 view->find_result = 0;
3182                 update_find_status_message (view, TRUE);
3183         }
3184 }
3185
3186 static void on_adjustment_value_changed (GtkAdjustment  *adjustment,
3187                                          EvView *view)
3188 {
3189         int dx = 0, dy = 0;
3190
3191         if (! GTK_WIDGET_REALIZED (view))
3192                 return;
3193
3194         if (view->hadjustment) {
3195                 dx = view->scroll_x - (int) view->hadjustment->value;
3196                 view->scroll_x = (int) view->hadjustment->value;
3197         } else {
3198                 view->scroll_x = 0;
3199         }
3200
3201         if (view->vadjustment) {
3202                 dy = view->scroll_y - (int) view->vadjustment->value;
3203                 view->scroll_y = (int) view->vadjustment->value;
3204         } else {
3205                 view->scroll_y = 0;
3206         }
3207
3208
3209         if (view->pending_resize)
3210                 gtk_widget_queue_draw (GTK_WIDGET (view));
3211         else
3212                 gdk_window_scroll (GTK_WIDGET (view)->window, dx, dy);
3213
3214
3215         if (view->document)
3216                 view_update_range_and_current_page (view);
3217 }
3218
3219 GtkWidget*
3220 ev_view_new (void)
3221 {
3222         GtkWidget *view;
3223
3224         view = g_object_new (EV_TYPE_VIEW, NULL);
3225
3226         return view;
3227 }
3228
3229 static void
3230 setup_caches (EvView *view)
3231 {
3232         view->page_cache = ev_page_cache_get (view->document);
3233         g_signal_connect (view->page_cache, "page-changed", G_CALLBACK (page_changed_cb), view);
3234         view->pixbuf_cache = ev_pixbuf_cache_new (GTK_WIDGET (view), view->document);
3235         g_signal_connect (view->pixbuf_cache, "job-finished", G_CALLBACK (job_finished_cb), view);
3236 }
3237
3238 static void
3239 clear_caches (EvView *view)
3240 {
3241         if (view->pixbuf_cache) {
3242                 g_object_unref (view->pixbuf_cache);
3243                 view->pixbuf_cache = NULL;
3244         }
3245
3246         if (view->page_cache) {
3247                 view->page_cache = NULL;
3248         }
3249 }
3250
3251 void
3252 ev_view_set_loading (EvView       *view,
3253                      gboolean      loading)
3254 {
3255         view->loading = loading;
3256         gtk_widget_queue_draw (GTK_WIDGET (view));
3257 }
3258
3259 void
3260 ev_view_set_document (EvView     *view,
3261                       EvDocument *document)
3262 {
3263         g_return_if_fail (EV_IS_VIEW (view));
3264
3265         view->loading = FALSE;
3266
3267         if (document != view->document) {
3268                 clear_caches (view);
3269
3270                 if (view->document) {
3271                         g_signal_handlers_disconnect_by_func (view->document,
3272                                                               find_changed_cb,
3273                                                               view);
3274                         g_object_unref (view->document);
3275                         view->page_cache = NULL;
3276
3277                 }
3278
3279                 view->document = document;
3280                 view->find_result = 0;
3281
3282                 if (view->document) {
3283                         g_object_ref (view->document);
3284                         if (EV_IS_DOCUMENT_FIND (view->document)) {
3285                                 g_signal_connect (view->document,
3286                                                   "find_changed",
3287                                                   G_CALLBACK (find_changed_cb),
3288                                                   view);
3289                         }
3290
3291                         setup_caches (view);
3292                 }
3293
3294                 gtk_widget_queue_resize (GTK_WIDGET (view));
3295         }
3296 }
3297
3298 /*** Zoom and sizing mode ***/
3299
3300 #define EPSILON 0.0000001
3301 void
3302 ev_view_set_zoom (EvView   *view,
3303                   double    factor,
3304                   gboolean  relative)
3305 {
3306         double scale;
3307
3308         if (relative)
3309                 scale = view->scale * factor;
3310         else
3311                 scale = factor;
3312
3313         scale = CLAMP (scale, MIN_SCALE, MAX_SCALE);
3314
3315         if (ABS (view->scale - scale) < EPSILON)
3316                 return;
3317
3318         view->scale = scale;
3319         view->pending_resize = TRUE;
3320
3321         gtk_widget_queue_resize (GTK_WIDGET (view));
3322
3323         g_object_notify (G_OBJECT (view), "zoom");
3324 }
3325
3326 double
3327 ev_view_get_zoom (EvView *view)
3328 {
3329         return view->scale;
3330 }
3331
3332 gboolean
3333 ev_view_get_continuous (EvView *view)
3334 {
3335         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
3336
3337         return view->continuous;
3338 }
3339
3340 void
3341 ev_view_set_continuous (EvView   *view,
3342                         gboolean  continuous)
3343 {
3344         g_return_if_fail (EV_IS_VIEW (view));
3345
3346         continuous = continuous != FALSE;
3347
3348         if (view->continuous != continuous) {
3349                 view->continuous = continuous;
3350                 view->pending_scroll = SCROLL_TO_PAGE_POSITION;
3351                 gtk_widget_queue_resize (GTK_WIDGET (view));
3352         }
3353
3354         g_object_notify (G_OBJECT (view), "continuous");
3355 }
3356
3357 gboolean
3358 ev_view_get_dual_page (EvView *view)
3359 {
3360         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
3361
3362         return view->dual_page;
3363 }
3364
3365 void
3366 ev_view_set_dual_page (EvView   *view,
3367                        gboolean  dual_page)
3368 {
3369         g_return_if_fail (EV_IS_VIEW (view));
3370
3371         dual_page = dual_page != FALSE;
3372
3373         if (view->dual_page == dual_page)
3374                 return;
3375
3376         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
3377         view->dual_page = dual_page;
3378         /* FIXME: if we're keeping the pixbuf cache around, we should extend the
3379          * preload_cache_size to be 2 if dual_page is set.
3380          */
3381         gtk_widget_queue_resize (GTK_WIDGET (view));
3382
3383         g_object_notify (G_OBJECT (view), "dual-page");
3384 }
3385
3386 void
3387 ev_view_set_fullscreen (EvView   *view,
3388                          gboolean  fullscreen)
3389 {
3390         g_return_if_fail (EV_IS_VIEW (view));
3391
3392         fullscreen = fullscreen != FALSE;
3393
3394         if (view->fullscreen == fullscreen)
3395                 return;
3396
3397         view->fullscreen = fullscreen;
3398         gtk_widget_queue_resize (GTK_WIDGET (view));
3399
3400         g_object_notify (G_OBJECT (view), "fullscreen");
3401 }
3402
3403 gboolean
3404 ev_view_get_fullscreen (EvView *view)
3405 {
3406         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
3407
3408         return view->fullscreen;
3409 }
3410
3411 void
3412 ev_view_set_presentation (EvView   *view,
3413                           gboolean  presentation)
3414 {
3415         g_return_if_fail (EV_IS_VIEW (view));
3416
3417         presentation = presentation != FALSE;
3418
3419         if (view->presentation == presentation)
3420                 return;
3421
3422         if (!presentation)
3423                 view->presentation_state = EV_PRESENTATION_NORMAL;
3424
3425         view->presentation = presentation;
3426         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
3427
3428         if (presentation) {
3429                 view->sizing_mode_saved = view->sizing_mode;
3430                 view->scale_saved = view->scale;
3431                 ev_view_set_sizing_mode (view, EV_SIZING_BEST_FIT);
3432         } else {
3433                 ev_view_set_sizing_mode (view, view->sizing_mode_saved);
3434                 ev_view_set_zoom (view, view->scale_saved, FALSE);
3435         }
3436
3437         gtk_widget_queue_resize (GTK_WIDGET (view));
3438
3439         if (presentation)
3440                 ev_view_presentation_transition_start (view);
3441         else
3442                 ev_view_presentation_transition_stop (view);
3443
3444         if (GTK_WIDGET_REALIZED (view)) {
3445                 if (view->presentation)
3446                         gdk_window_set_background (GTK_WIDGET(view)->window,
3447                                                    &GTK_WIDGET (view)->style->black);
3448                 else
3449                         gdk_window_set_background (GTK_WIDGET(view)->window,
3450                                                    &GTK_WIDGET (view)->style->mid [GTK_STATE_NORMAL]);
3451         }
3452
3453         g_object_notify (G_OBJECT (view), "presentation");
3454 }
3455
3456 gboolean
3457 ev_view_get_presentation (EvView *view)
3458 {
3459         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
3460
3461         return view->presentation;
3462 }
3463
3464 static gboolean
3465 transition_next_page (EvView *view)
3466 {
3467         ev_view_next_page (view);
3468
3469         return FALSE;
3470 }
3471
3472 static void
3473 ev_view_presentation_transition_stop (EvView *view)
3474 {
3475         if (view->trans_timeout_id > 0)
3476                 g_source_remove (view->trans_timeout_id);
3477         view->trans_timeout_id = 0;
3478 }
3479
3480 static void
3481 ev_view_presentation_transition_start (EvView *view)
3482 {
3483         gdouble duration;
3484
3485         if (!EV_IS_DOCUMENT_TRANSITION (view->document))
3486                 return;
3487
3488         ev_view_presentation_transition_stop (view);
3489
3490         duration = ev_document_transition_get_page_duration (EV_DOCUMENT_TRANSITION (view->document),
3491                                                              view->current_page);
3492         if (duration > 0)
3493                 view->trans_timeout_id = g_timeout_add (duration * 1000,
3494                                                         (GSourceFunc) transition_next_page,
3495                                                         view);
3496 }
3497
3498 void
3499 ev_view_set_sizing_mode (EvView       *view,
3500                          EvSizingMode  sizing_mode)
3501 {
3502         g_return_if_fail (EV_IS_VIEW (view));
3503
3504         if (view->sizing_mode == sizing_mode)
3505                 return;
3506
3507         view->sizing_mode = sizing_mode;
3508         gtk_widget_queue_resize (GTK_WIDGET (view));
3509
3510         g_object_notify (G_OBJECT (view), "sizing-mode");
3511 }
3512
3513 EvSizingMode
3514 ev_view_get_sizing_mode (EvView *view)
3515 {
3516         g_return_val_if_fail (EV_IS_VIEW (view), EV_SIZING_FREE);
3517
3518         return view->sizing_mode;
3519 }
3520
3521 gboolean
3522 ev_view_can_zoom_in (EvView *view)
3523 {
3524         return view->scale * ZOOM_IN_FACTOR <= MAX_SCALE;
3525 }
3526
3527 gboolean
3528 ev_view_can_zoom_out (EvView *view)
3529 {
3530         return view->scale * ZOOM_OUT_FACTOR >= MIN_SCALE;
3531 }
3532
3533 void
3534 ev_view_zoom_in (EvView *view)
3535 {
3536         g_return_if_fail (view->sizing_mode == EV_SIZING_FREE);
3537
3538         view->pending_scroll = SCROLL_TO_CENTER;
3539         ev_view_set_zoom (view, ZOOM_IN_FACTOR, TRUE);
3540 }
3541
3542 void
3543 ev_view_zoom_out (EvView *view)
3544 {
3545         g_return_if_fail (view->sizing_mode == EV_SIZING_FREE);
3546
3547         view->pending_scroll = SCROLL_TO_CENTER;
3548         ev_view_set_zoom (view, ZOOM_OUT_FACTOR, TRUE);
3549 }
3550
3551 void
3552 ev_view_rotate_right (EvView *view)
3553 {
3554         int rotation = view->rotation + 90;
3555
3556         if (rotation >= 360) {
3557                 rotation -= 360;
3558         }
3559
3560         ev_view_set_rotation (view, rotation);
3561 }
3562
3563 void
3564 ev_view_rotate_left (EvView *view)
3565 {
3566         int rotation = view->rotation - 90;
3567
3568         if (rotation < 0) {
3569                 rotation += 360;
3570         }
3571
3572         ev_view_set_rotation (view, rotation);
3573 }
3574
3575 void
3576 ev_view_set_rotation (EvView *view, int rotation)
3577 {
3578         view->rotation = rotation;
3579
3580         if (view->pixbuf_cache) {
3581                 ev_pixbuf_cache_clear (view->pixbuf_cache);
3582                 gtk_widget_queue_resize (GTK_WIDGET (view));
3583         }
3584
3585         if (rotation != 0)
3586                 clear_selection (view);
3587
3588         g_object_notify (G_OBJECT (view), "rotation");
3589 }
3590
3591 int
3592 ev_view_get_rotation (EvView *view)
3593 {
3594         return view->rotation;
3595 }
3596
3597 static double
3598 zoom_for_size_fit_width (int doc_width,
3599                          int doc_height,
3600                          int target_width,
3601                          int target_height,
3602                          int vsb_width)
3603 {
3604         double scale;
3605
3606         scale = (double)target_width / doc_width;
3607
3608         if (doc_height * scale > target_height)
3609                 scale = (double) (target_width - vsb_width) / doc_width;
3610
3611         return scale;
3612 }
3613
3614 static double
3615 zoom_for_size_fit_height (int doc_width,
3616                           int doc_height,
3617                           int target_width,
3618                           int target_height,
3619                           int vsb_height)
3620 {
3621         double scale;
3622
3623         scale = (double)target_height / doc_height;
3624
3625         if (doc_width * scale > target_width)
3626                 scale = (double) (target_height - vsb_height) / doc_height;
3627
3628         return scale;
3629 }
3630
3631 static double
3632 zoom_for_size_best_fit (int doc_width,
3633                         int doc_height,
3634                         int target_width,
3635                         int target_height,
3636                         int vsb_width,
3637                         int hsb_width)
3638 {
3639         double w_scale;
3640         double h_scale;
3641
3642         w_scale = (double)target_width / doc_width;
3643         h_scale = (double)target_height / doc_height;
3644
3645         if (doc_height * w_scale > target_height)
3646                 w_scale = (double) (target_width - vsb_width) / doc_width;
3647         if (doc_width * h_scale > target_width)
3648                 h_scale = (double) (target_height - hsb_width) / doc_height;
3649
3650         return MIN (w_scale, h_scale);
3651 }
3652
3653
3654 static void
3655 ev_view_zoom_for_size_presentation (EvView *view,
3656                                     int     width,
3657                                     int     height)
3658 {
3659         int doc_width, doc_height;
3660         gdouble scale;
3661
3662         ev_page_cache_get_size (view->page_cache,
3663                                 view->current_page,
3664                                 view->rotation,
3665                                 1.0,
3666                                 &doc_width,
3667                                 &doc_height);
3668         scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, 0, 0);
3669         ev_view_set_zoom (view, scale, FALSE);
3670 }
3671
3672 static void
3673 ev_view_zoom_for_size_continuous_and_dual_page (EvView *view,
3674                            int     width,
3675                            int     height,
3676                            int     vsb_width,
3677                            int     hsb_height)
3678 {
3679         int doc_width, doc_height;
3680         GtkBorder border;
3681         gdouble scale;
3682
3683         ev_page_cache_get_max_width (view->page_cache,
3684                                      view->rotation,
3685                                      1.0,
3686                                      &doc_width);
3687         ev_page_cache_get_max_height (view->page_cache,
3688                                       view->rotation,
3689                                       1.0,
3690                                       &doc_height);
3691         compute_border (view, doc_width, doc_height, &border);
3692
3693         doc_width = doc_width * 2;
3694         width -= (2 * (border.left + border.right) + 3 * view->spacing);
3695         height -= (border.top + border.bottom + 2 * view->spacing - 1);
3696
3697         /* FIXME: We really need to calculate the overall height here, not the
3698          * page height.  We assume there's always a vertical scrollbar for
3699          * now.  We need to fix this. */
3700         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
3701                 scale = zoom_for_size_fit_width (doc_width, doc_height, width - vsb_width, height, 0);
3702         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
3703                 scale = zoom_for_size_best_fit (doc_width, doc_height, width - vsb_width, height, 0, hsb_height);
3704         else
3705                 g_assert_not_reached ();
3706
3707         ev_view_set_zoom (view, scale, FALSE);
3708 }
3709
3710 static void
3711 ev_view_zoom_for_size_continuous (EvView *view,
3712                                   int     width,
3713                                   int     height,
3714                                   int     vsb_width,
3715                                   int     hsb_height)
3716 {
3717         int doc_width, doc_height;
3718         GtkBorder border;
3719         gdouble scale;
3720
3721         ev_page_cache_get_max_width (view->page_cache,
3722                                      view->rotation,
3723                                      1.0,
3724                                      &doc_width);
3725         ev_page_cache_get_max_height (view->page_cache,
3726                                       view->rotation,
3727                                       1.0,
3728                                       &doc_height);
3729         compute_border (view, doc_width, doc_height, &border);
3730
3731         width -= (border.left + border.right + 2 * view->spacing);
3732         height -= (border.top + border.bottom + 2 * view->spacing - 1);
3733
3734         /* FIXME: We really need to calculate the overall height here, not the
3735          * page height.  We assume there's always a vertical scrollbar for
3736          * now.  We need to fix this. */
3737         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
3738                 scale = zoom_for_size_fit_width (doc_width, doc_height, width - vsb_width, height, 0);
3739         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
3740                 scale = zoom_for_size_best_fit (doc_width, doc_height, width - vsb_width, height, 0, hsb_height);
3741         else
3742                 g_assert_not_reached ();
3743
3744         ev_view_set_zoom (view, scale, FALSE);
3745 }
3746
3747 static void
3748 ev_view_zoom_for_size_dual_page (EvView *view,
3749                                  int     width,
3750                                  int     height,
3751                                  int     vsb_width,
3752                                  int     hsb_height)
3753 {
3754         GtkBorder border;
3755         gint doc_width, doc_height;
3756         gdouble scale;
3757         gint other_page;
3758
3759         other_page = view->current_page ^ 1;
3760
3761         /* Find the largest of the two. */
3762         ev_page_cache_get_size (view->page_cache,
3763                                 view->current_page,
3764                                 view->rotation,
3765                                 1.0,
3766                                 &doc_width, &doc_height);
3767
3768         if (other_page < ev_page_cache_get_n_pages (view->page_cache)) {
3769                 gint width_2, height_2;
3770                 ev_page_cache_get_size (view->page_cache,
3771                                         other_page,
3772                                         view->rotation,
3773                                         1.0,
3774                                         &width_2, &height_2);
3775                 if (width_2 > doc_width)
3776                         doc_width = width_2;
3777                 if (height_2 > doc_height)
3778                         doc_height = height_2;
3779         }
3780         compute_border (view, doc_width, doc_height, &border);
3781
3782         doc_width = doc_width * 2;
3783         width -= ((border.left + border.right)* 2 + 3 * view->spacing);
3784         height -= (border.top + border.bottom + 2 * view->spacing);
3785
3786         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
3787                 scale = zoom_for_size_fit_width (doc_width, doc_height, width, height, vsb_width);
3788         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
3789                 scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, vsb_width, hsb_height);
3790         else
3791                 g_assert_not_reached ();
3792
3793         ev_view_set_zoom (view, scale, FALSE);
3794 }
3795
3796 static void
3797 ev_view_zoom_for_size_single_page (EvView *view,
3798                                    int     width,
3799                                    int     height,
3800                                    int     vsb_width,
3801                                    int     hsb_height)
3802 {
3803         int doc_width, doc_height;
3804         GtkBorder border;
3805         gdouble scale;
3806
3807         ev_page_cache_get_size (view->page_cache,
3808                                 view->current_page,
3809                                 view->rotation,
3810                                 1.0,
3811                                 &doc_width,
3812                                 &doc_height);
3813         /* Get an approximate border */
3814         compute_border (view, width, height, &border);
3815
3816         width -= (border.left + border.right + 2 * view->spacing);
3817         height -= (border.top + border.bottom + 2 * view->spacing);
3818
3819         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
3820                 scale = zoom_for_size_fit_width (doc_width, doc_height, width, height, vsb_width);
3821         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
3822                 scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, vsb_width, hsb_height);
3823         else
3824                 g_assert_not_reached ();
3825
3826         ev_view_set_zoom (view, scale, FALSE);
3827 }
3828
3829 void
3830 ev_view_set_zoom_for_size (EvView *view,
3831                            int     width,
3832                            int     height,
3833                            int     vsb_width,
3834                            int     hsb_height)
3835 {
3836         g_return_if_fail (view->sizing_mode == EV_SIZING_FIT_WIDTH ||
3837                           view->sizing_mode == EV_SIZING_BEST_FIT);
3838         g_return_if_fail (width >= 0);
3839         g_return_if_fail (height >= 0);
3840
3841         if (view->document == NULL)
3842                 return;
3843
3844         if (view->presentation)
3845                 ev_view_zoom_for_size_presentation (view, width, height);
3846         else if (view->continuous && view->dual_page)
3847                 ev_view_zoom_for_size_continuous_and_dual_page (view, width, height, vsb_width, hsb_height);
3848         else if (view->continuous)
3849                 ev_view_zoom_for_size_continuous (view, width, height, vsb_width, hsb_height);
3850         else if (view->dual_page)
3851                 ev_view_zoom_for_size_dual_page (view, width, height, vsb_width, hsb_height);
3852         else
3853                 ev_view_zoom_for_size_single_page (view, width, height, vsb_width, hsb_height);
3854 }
3855
3856 /*** Status text messages ***/
3857
3858 const char *
3859 ev_view_get_status (EvView *view)
3860 {
3861         g_return_val_if_fail (EV_IS_VIEW (view), NULL);
3862
3863         return view->status;
3864 }
3865
3866 static void
3867 ev_view_set_status (EvView *view, const char *message)
3868 {
3869         g_return_if_fail (EV_IS_VIEW (view));
3870
3871         if (message != view->status) {
3872                 g_free (view->status);
3873                 view->status = g_strdup (message);
3874                 g_object_notify (G_OBJECT (view), "status");
3875         }
3876 }
3877
3878 static void
3879 update_find_status_message (EvView *view, gboolean this_page)
3880 {
3881         char *message;
3882
3883         if (this_page) {
3884                 int results;
3885
3886                 results = ev_document_find_get_n_results
3887                                 (EV_DOCUMENT_FIND (view->document),
3888                                  view->current_page);
3889                 /* TRANS: Sometimes this could be better translated as
3890                    "%d hit(s) on this page".  Therefore this string
3891                    contains plural cases. */
3892                 message = g_strdup_printf (ngettext ("%d found on this page",
3893                                                      "%d found on this page",
3894                                                      results),
3895                                            results);
3896         } else {
3897                 double percent;
3898
3899                 percent = ev_document_find_get_progress
3900                                 (EV_DOCUMENT_FIND (view->document));
3901                 message = g_strdup_printf (_("%3d%% remaining to search"),
3902                                            (int) ((1.0 - percent) * 100));
3903
3904         }
3905         ev_view_set_find_status (view, message);
3906         g_free (message);
3907 }
3908
3909 const char *
3910 ev_view_get_find_status (EvView *view)
3911 {
3912         g_return_val_if_fail (EV_IS_VIEW (view), NULL);
3913
3914         return view->find_status;
3915 }
3916
3917 static void
3918 ev_view_set_find_status (EvView *view, const char *message)
3919 {
3920         g_return_if_fail (EV_IS_VIEW (view));
3921
3922         g_free (view->find_status);
3923         view->find_status = g_strdup (message);
3924         g_object_notify (G_OBJECT (view), "find-status");
3925 }
3926
3927 /*** Find ***/
3928
3929 static void
3930 jump_to_find_result (EvView *view)
3931 {
3932         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
3933         EvRectangle rect;
3934         GdkRectangle view_rect;
3935         int n_results;
3936         int page = view->current_page;
3937
3938         n_results = ev_document_find_get_n_results (find, page);
3939
3940         if (n_results > 0  && view->find_result < n_results) {
3941                 ev_document_find_get_result
3942                         (find, page, view->find_result, &rect);
3943
3944                 doc_rect_to_view_rect (view, page, &rect, &view_rect);
3945                 ensure_rectangle_is_visible (view, &view_rect);
3946         }
3947 }
3948
3949 /**
3950  * jump_to_find_page
3951  * @view: #EvView instance
3952  * @direction: Direction to look
3953  * @shift: Shift from current page
3954  *
3955  * Jumps to the first page that has occurences of searched word.
3956  * Uses a direction where to look and a shift from current page.
3957  *
3958  */
3959 static void
3960 jump_to_find_page (EvView *view, EvViewFindDirection direction, gint shift)
3961 {
3962         int n_pages, i;
3963
3964         n_pages = ev_page_cache_get_n_pages (view->page_cache);
3965
3966         for (i = 0; i < n_pages; i++) {
3967                 int has_results;
3968                 int page;
3969
3970                 if (direction == EV_VIEW_FIND_NEXT)
3971                         page = view->current_page + i;
3972                 else
3973                         page = view->current_page - i;
3974                 page += shift;
3975
3976                 if (page >= n_pages) {
3977                         page = page - n_pages;
3978                 }
3979                 if (page < 0)
3980                         page = page + n_pages;
3981
3982                 has_results = ev_document_find_page_has_results
3983                                 (EV_DOCUMENT_FIND (view->document), page);
3984                 if (has_results == -1) {
3985                         break;
3986                 } else if (has_results == 1) {
3987                         ev_page_cache_set_current_page (view->page_cache, page);
3988                         break;
3989                 }
3990         }
3991 }
3992
3993 gboolean
3994 ev_view_can_find_next (EvView *view)
3995 {
3996         if (EV_IS_DOCUMENT_FIND (view->document)) {
3997                 EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
3998                 int i, n_pages;
3999
4000                 n_pages = ev_page_cache_get_n_pages (view->page_cache);
4001                 for (i = 0; i < n_pages; i++) {
4002                         if (ev_document_find_get_n_results (find, i) > 0) {
4003                                 return TRUE;
4004                         }
4005                 }
4006         }
4007
4008         return FALSE;
4009 }
4010
4011 void
4012 ev_view_find_next (EvView *view)
4013 {
4014         int n_results, n_pages;
4015         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
4016
4017         n_results = ev_document_find_get_n_results (find, view->current_page);
4018
4019         n_pages = ev_page_cache_get_n_pages (view->page_cache);
4020
4021         view->find_result++;
4022
4023         if (view->find_result >= n_results) {
4024
4025                 view->find_result = 0;
4026                 jump_to_find_page (view, EV_VIEW_FIND_NEXT, 1);
4027                 jump_to_find_result (view);
4028         } else {
4029                 jump_to_find_result (view);
4030                 gtk_widget_queue_draw (GTK_WIDGET (view));
4031         }
4032 }
4033
4034 gboolean
4035 ev_view_can_find_previous (EvView *view)
4036 {
4037         if (EV_IS_DOCUMENT_FIND (view->document)) {
4038                 EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
4039                 int i, n_pages;
4040
4041                 n_pages = ev_page_cache_get_n_pages (view->page_cache);
4042                 for (i = n_pages - 1; i >= 0; i--) {
4043                         if (ev_document_find_get_n_results (find, i) > 0) {
4044                                 return TRUE;
4045                         }
4046                 }
4047         }
4048
4049         return FALSE;
4050 }
4051 void
4052 ev_view_find_previous (EvView *view)
4053 {
4054         int n_results, n_pages;
4055         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
4056         EvPageCache *page_cache;
4057
4058         page_cache = ev_page_cache_get (view->document);
4059
4060         n_results = ev_document_find_get_n_results (find, view->current_page);
4061
4062         n_pages = ev_page_cache_get_n_pages (page_cache);
4063
4064         view->find_result--;
4065
4066         if (view->find_result < 0) {
4067
4068                 jump_to_find_page (view, EV_VIEW_FIND_PREV, -1);
4069                 view->find_result = ev_document_find_get_n_results (find, view->current_page) - 1;
4070                 jump_to_find_result (view);
4071         } else {
4072                 jump_to_find_result (view);
4073                 gtk_widget_queue_draw (GTK_WIDGET (view));
4074         }
4075 }
4076
4077 void ev_view_search_changed (EvView *view)
4078 {
4079         /* search string has changed, focus on new search result */
4080         view->jump_to_find_result = TRUE;
4081 }
4082
4083 /*** Selections ***/
4084
4085 /* compute_new_selection_rect/text calculates the area currently selected by
4086  * view_rect.  each handles a different mode;
4087  */
4088 static GList *
4089 compute_new_selection_rect (EvView       *view,
4090                             GdkPoint     *start,
4091                             GdkPoint     *stop)
4092 {
4093         GdkRectangle view_rect;
4094         int n_pages, i;
4095         GList *list = NULL;
4096
4097         g_assert (view->selection_mode == EV_VIEW_SELECTION_RECTANGLE);
4098
4099         view_rect.x = MIN (start->x, stop->x);
4100         view_rect.y = MIN (start->y, stop->y);
4101         view_rect.width = MAX (start->x, stop->x) - view_rect.x;
4102         view_rect.width = MAX (start->y, stop->y) - view_rect.y;
4103
4104         n_pages = ev_page_cache_get_n_pages (view->page_cache);
4105
4106         for (i = 0; i < n_pages; i++) {
4107                 GdkRectangle page_area;
4108                 GtkBorder border;
4109
4110                 if (get_page_extents (view, i, &page_area, &border)) {
4111                         GdkRectangle overlap;
4112
4113                         if (gdk_rectangle_intersect (&page_area, &view_rect, &overlap)) {
4114                                 EvViewSelection *selection;
4115
4116                                 selection = g_new0 (EvViewSelection, 1);
4117                                 selection->page = i;
4118                                 view_rect_to_doc_rect (view, &overlap, &page_area,
4119                                                        &(selection->rect));
4120
4121                                 list = g_list_append (list, selection);
4122                         }
4123                 }
4124         }
4125
4126         return list;
4127 }
4128
4129 static gboolean
4130 gdk_rectangle_point_in (GdkRectangle *rectangle,
4131                         GdkPoint     *point)
4132 {
4133         return rectangle->x <= point->x &&
4134                 rectangle->y <= point->y &&
4135                 point->x < rectangle->x + rectangle->width &&
4136                 point->y < rectangle->y + rectangle->height;
4137 }
4138
4139 static GList *
4140 compute_new_selection_text (EvView   *view,
4141                             GdkPoint *start,
4142                             GdkPoint *stop)
4143 {
4144         int n_pages, i, first, last;
4145         GList *list = NULL;
4146         EvViewSelection *selection;
4147         gint width, height;
4148         int start_page, end_page;
4149
4150         g_assert (view->selection_mode == EV_VIEW_SELECTION_TEXT);
4151
4152         n_pages = ev_page_cache_get_n_pages (view->page_cache);
4153
4154         /* First figure out the range of pages the selection
4155          * affects. */
4156         first = n_pages;
4157         last = 0;
4158         if (view->continuous) {
4159                 start_page = 0;
4160                 end_page = n_pages;
4161         } else if (view->dual_page) {
4162                 start_page = view->start_page;
4163                 end_page = view->end_page + 1;
4164         } else {
4165                 start_page = view->current_page;
4166                 end_page = view->current_page + 1;
4167         }
4168
4169         for (i = start_page; i < end_page; i++) {
4170                 GdkRectangle page_area;
4171                 GtkBorder border;
4172
4173                 get_page_extents (view, i, &page_area, &border);
4174                 if (gdk_rectangle_point_in (&page_area, start) ||
4175                     gdk_rectangle_point_in (&page_area, stop)) {
4176                         if (first == n_pages)
4177                                 first = i;
4178                         last = i;
4179                 }
4180
4181         }
4182
4183
4184
4185         /* Now create a list of EvViewSelection's for the affected
4186          * pages.  This could be an empty list, a list of just one
4187          * page or a number of pages.*/
4188         for (i = first; i < last + 1; i++) {
4189                 GdkRectangle page_area;
4190                 GtkBorder border;
4191                 GdkPoint *point;
4192
4193                 ev_page_cache_get_size (view->page_cache, i,
4194                                         view->rotation,
4195                                         1.0, &width, &height);
4196
4197                 selection = g_new0 (EvViewSelection, 1);
4198                 selection->page = i;
4199                 selection->rect.x1 = selection->rect.y1 = 0;
4200                 selection->rect.x2 = width;
4201                 selection->rect.y2 = height;
4202
4203                 get_page_extents (view, i, &page_area, &border);
4204
4205                 if (gdk_rectangle_point_in (&page_area, start))
4206                         point = start;
4207                 else
4208                         point = stop;
4209
4210                 if (i == first)
4211                         view_point_to_doc_point (view, point, &page_area,
4212                                                  &selection->rect.x1,
4213                                                  &selection->rect.y1);
4214
4215                 /* If the selection is contained within just one page,
4216                  * make sure we don't write 'start' into both points
4217                  * in selection->rect. */
4218                 if (first == last)
4219                         point = stop;
4220
4221                 if (i == last)
4222                         view_point_to_doc_point (view, point, &page_area,
4223                                                  &selection->rect.x2,
4224                                                  &selection->rect.y2);
4225
4226                 list = g_list_append (list, selection);
4227         }
4228
4229         return list;
4230 }
4231
4232 /* This function takes the newly calculated list, and figures out which regions
4233  * have changed.  It then queues a redraw approporiately.
4234  */
4235 static void
4236 merge_selection_region (EvView *view,
4237                         GList  *new_list)
4238 {
4239         GList *old_list;
4240         GList *new_list_ptr, *old_list_ptr;
4241
4242         /* Update the selection */
4243         old_list = ev_pixbuf_cache_get_selection_list (view->pixbuf_cache);
4244         g_list_foreach (view->selection_info.selections, (GFunc)selection_free, NULL);
4245         view->selection_info.selections = new_list;
4246         ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, new_list);
4247         g_object_notify (G_OBJECT (view), "has-selection");
4248
4249         new_list_ptr = new_list;
4250         old_list_ptr = old_list;
4251
4252         while (new_list_ptr || old_list_ptr) {
4253                 EvViewSelection *old_sel, *new_sel;
4254                 int cur_page;
4255                 GdkRegion *region = NULL;
4256
4257                 new_sel = (new_list_ptr) ? (new_list_ptr->data) : NULL;
4258                 old_sel = (old_list_ptr) ? (old_list_ptr->data) : NULL;
4259
4260                 /* Assume that the lists are in order, and we run through them
4261                  * comparing them, one page at a time.  We come out with the
4262                  * first page we see. */
4263                 if (new_sel && old_sel) {
4264                         if (new_sel->page < old_sel->page) {
4265                                 new_list_ptr = new_list_ptr->next;
4266                                 old_sel = NULL;
4267                         } else if (new_sel->page > old_sel->page) {
4268                                 old_list_ptr = old_list_ptr->next;
4269                                 new_sel = NULL;
4270                         } else {
4271                                 new_list_ptr = new_list_ptr->next;
4272                                 old_list_ptr = old_list_ptr->next;
4273                         }
4274                 } else if (new_sel) {
4275                         new_list_ptr = new_list_ptr->next;
4276                 } else if (old_sel) {
4277                         old_list_ptr = old_list_ptr->next;
4278                 }
4279
4280                 g_assert (new_sel || old_sel);
4281
4282                 /* is the page we're looking at on the screen?*/
4283                 cur_page = new_sel ? new_sel->page : old_sel->page;
4284                 if (cur_page < view->start_page || cur_page > view->end_page)
4285                         continue;
4286
4287                 /* seed the cache with a new page.  We are going to need the new
4288                  * region too. */
4289                 if (new_sel) {
4290                         GdkRegion *tmp_region = NULL;
4291                         ev_pixbuf_cache_get_selection_pixbuf (view->pixbuf_cache,
4292                                                               cur_page,
4293                                                               view->scale,
4294                                                               &tmp_region);
4295                         if (tmp_region) {
4296                                 new_sel->covered_region = gdk_region_copy (tmp_region);
4297                         }
4298                 }
4299
4300                 /* Now we figure out what needs redrawing */
4301                 if (old_sel && new_sel) {
4302                         if (old_sel->covered_region &&
4303                             new_sel->covered_region) {
4304                                 /* We only want to redraw the areas that have
4305                                  * changed, so we xor the old and new regions
4306                                  * and redraw if it's different */
4307                                 region = gdk_region_copy (old_sel->covered_region);
4308                                 gdk_region_xor (region, new_sel->covered_region);
4309                                 if (gdk_region_empty (region)) {
4310                                         gdk_region_destroy (region);
4311                                         region = NULL;
4312                                 }
4313                         } else if (old_sel->covered_region) {
4314                                 region = gdk_region_copy (old_sel->covered_region);
4315                         } else if (new_sel->covered_region) {
4316                                 region = gdk_region_copy (new_sel->covered_region);
4317                         }
4318                 } else if (old_sel && !new_sel) {
4319                         if (old_sel->covered_region && !gdk_region_empty (old_sel->covered_region)) {
4320                                 region = gdk_region_copy (old_sel->covered_region);
4321                         }
4322                 } else if (!old_sel && new_sel) {
4323                         if (new_sel->covered_region && !gdk_region_empty (new_sel->covered_region)) {
4324                                 region = gdk_region_copy (new_sel->covered_region);
4325                         }
4326                 } else {
4327                         g_assert_not_reached ();
4328                 }
4329
4330                 /* Redraw the damaged region! */
4331                 if (region) {
4332                         GdkRectangle page_area;
4333                         GtkBorder border;
4334
4335                         get_page_extents (view, cur_page, &page_area, &border);
4336                         gdk_region_offset (region,
4337                                            page_area.x + border.left - view->scroll_x,
4338                                            page_area.y + border.top - view->scroll_y);
4339                         gdk_window_invalidate_region (GTK_WIDGET (view)->window, region, TRUE);
4340                         gdk_region_destroy (region);
4341                 }
4342         }
4343
4344         /* Free the old list, now that we're done with it. */
4345         g_list_foreach (old_list, (GFunc) selection_free, NULL);
4346 }
4347
4348 static void
4349 compute_selections (EvView   *view,
4350                     GdkPoint *start,
4351                     GdkPoint *stop)
4352 {
4353         GList *list;
4354
4355         if (view->selection_mode == EV_VIEW_SELECTION_RECTANGLE)
4356                 list = compute_new_selection_rect (view, start, stop);
4357         else
4358                 list = compute_new_selection_text (view, start, stop);
4359         merge_selection_region (view, list);
4360 }
4361
4362 /* Free's the selection.  It's up to the caller to queue redraws if needed.
4363  */
4364 static void
4365 selection_free (EvViewSelection *selection)
4366 {
4367         if (selection->covered_region)
4368                 gdk_region_destroy (selection->covered_region);
4369         g_free (selection);
4370 }
4371
4372 static void
4373 clear_selection (EvView *view)
4374 {
4375         g_list_foreach (view->selection_info.selections, (GFunc)selection_free, NULL);
4376         view->selection_info.selections = NULL;
4377         view->selection_info.in_selection = FALSE;
4378         g_object_notify (G_OBJECT (view), "has-selection");
4379 }
4380
4381
4382 void
4383 ev_view_select_all (EvView *view)
4384 {
4385         int n_pages, i;
4386
4387         /* Disable selection on rotated pages for the 0.4.0 series */
4388         if (view->rotation != 0)
4389                 return;
4390
4391         clear_selection (view);
4392
4393         n_pages = ev_page_cache_get_n_pages (view->page_cache);
4394         for (i = 0; i < n_pages; i++) {
4395                 int width, height;
4396                 EvViewSelection *selection;
4397
4398                 ev_page_cache_get_size (view->page_cache,
4399                                         i,
4400                                         view->rotation,
4401                                         1.0, &width, &height);
4402
4403                 selection = g_new0 (EvViewSelection, 1);
4404                 selection->page = i;
4405                 selection->rect.x1 = selection->rect.y1 = 0;
4406                 selection->rect.x2 = width;
4407                 selection->rect.y2 = height;
4408
4409                 view->selection_info.selections = g_list_append (view->selection_info.selections, selection);
4410         }
4411
4412         ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, view->selection_info.selections);
4413         g_object_notify (G_OBJECT (view), "has-selection");
4414         gtk_widget_queue_draw (GTK_WIDGET (view));
4415 }
4416
4417 gboolean
4418 ev_view_get_has_selection (EvView *view)
4419 {
4420         return view->selection_info.selections != NULL;
4421 }
4422
4423 static char *
4424 get_selected_text (EvView *ev_view)
4425 {
4426         GString *text;
4427         GList *l;
4428
4429         text = g_string_new (NULL);
4430
4431         ev_document_doc_mutex_lock ();
4432
4433         for (l = ev_view->selection_info.selections; l != NULL; l = l->next) {
4434                 EvViewSelection *selection = (EvViewSelection *)l->data;
4435                 char *tmp;
4436
4437                 tmp = ev_document_get_text (ev_view->document,
4438                                             selection->page,
4439                                             &selection->rect);
4440                 g_string_append (text, tmp);
4441                 g_free (tmp);
4442         }
4443
4444         ev_document_doc_mutex_unlock ();
4445
4446         return g_string_free (text, FALSE);
4447 }
4448
4449 void
4450 ev_view_copy (EvView *ev_view)
4451 {
4452         GtkClipboard *clipboard;
4453         char *text;
4454
4455         if (!ev_document_can_get_text (ev_view->document)) {
4456                 return;
4457         }
4458
4459         text = get_selected_text (ev_view);
4460         clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view),
4461                                               GDK_SELECTION_CLIPBOARD);
4462         gtk_clipboard_set_text (clipboard, text, -1);
4463         g_free (text);
4464 }
4465
4466 static void
4467 ev_view_primary_get_cb (GtkClipboard     *clipboard,
4468                         GtkSelectionData *selection_data,
4469                         guint             info,
4470                         gpointer          data)
4471 {
4472         EvView *ev_view = EV_VIEW (data);
4473         char *text;
4474
4475         if (!ev_document_can_get_text (ev_view->document)) {
4476                 return;
4477         }
4478
4479         text = get_selected_text (ev_view);
4480         gtk_selection_data_set_text (selection_data, text, -1);
4481         g_free (text);
4482 }
4483
4484 static void
4485 ev_view_primary_clear_cb (GtkClipboard *clipboard,
4486                           gpointer      data)
4487 {
4488         EvView *view = EV_VIEW (data);
4489
4490         clear_selection (view);
4491 }
4492
4493 static void
4494 ev_view_update_primary_selection (EvView *ev_view)
4495 {
4496         GtkClipboard *clipboard;
4497
4498         clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view),
4499                                               GDK_SELECTION_PRIMARY);
4500
4501         if (ev_view->selection_info.selections) {
4502                 if (!gtk_clipboard_set_with_owner (clipboard,
4503                                                    targets,
4504                                                    G_N_ELEMENTS (targets),
4505                                                    ev_view_primary_get_cb,
4506                                                    ev_view_primary_clear_cb,
4507                                                    G_OBJECT (ev_view)))
4508                         ev_view_primary_clear_cb (clipboard, ev_view);
4509         } else {
4510                 if (gtk_clipboard_get_owner (clipboard) == G_OBJECT (ev_view))
4511                         gtk_clipboard_clear (clipboard);
4512         }
4513 }
4514
4515 /*** Cursor operations ***/
4516
4517 static GdkCursor *
4518 ev_view_create_invisible_cursor(void)
4519 {
4520        GdkBitmap *empty;
4521        GdkColor black = { 0, 0, 0, 0 };
4522        static char bits[] = { 0x00 };
4523
4524        empty = gdk_bitmap_create_from_data (NULL, bits, 1, 1);
4525
4526        return gdk_cursor_new_from_pixmap (empty, empty, &black, &black, 0, 0);
4527 }
4528
4529 static void
4530 ev_view_set_cursor (EvView *view, EvViewCursor new_cursor)
4531 {
4532         GdkCursor *cursor = NULL;
4533         GdkDisplay *display;
4534         GtkWidget *widget;
4535
4536         if (view->cursor == new_cursor) {
4537                 return;
4538         }
4539
4540         widget = gtk_widget_get_toplevel (GTK_WIDGET (view));
4541         display = gtk_widget_get_display (widget);
4542         view->cursor = new_cursor;
4543
4544         switch (new_cursor) {
4545                 case EV_VIEW_CURSOR_NORMAL:
4546                         gdk_window_set_cursor (widget->window, NULL);
4547                         break;
4548                 case EV_VIEW_CURSOR_IBEAM:
4549                         cursor = gdk_cursor_new_for_display (display, GDK_XTERM);
4550                         break;
4551                 case EV_VIEW_CURSOR_LINK:
4552                         cursor = gdk_cursor_new_for_display (display, GDK_HAND2);
4553                         break;
4554                 case EV_VIEW_CURSOR_WAIT:
4555                         cursor = gdk_cursor_new_for_display (display, GDK_WATCH);
4556                         break;
4557                 case EV_VIEW_CURSOR_HIDDEN:
4558                         cursor = ev_view_create_invisible_cursor ();
4559                         break;
4560                 case EV_VIEW_CURSOR_DRAG:
4561                         cursor = gdk_cursor_new_for_display (display, GDK_FLEUR);
4562                         break;
4563         }
4564
4565         if (cursor) {
4566                 gdk_window_set_cursor (widget->window, cursor);
4567                 gdk_cursor_unref (cursor);
4568                 gdk_flush();
4569         }
4570 }
4571
4572 void
4573 ev_view_hide_cursor (EvView *view)
4574 {
4575        ev_view_set_cursor (view, EV_VIEW_CURSOR_HIDDEN);
4576 }
4577
4578 void
4579 ev_view_show_cursor (EvView *view)
4580 {
4581        ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
4582 }
4583
4584 static void
4585 ev_view_reset_presentation_state (EvView *view)
4586 {
4587         if (!view->presentation ||
4588             view->presentation_state == EV_PRESENTATION_NORMAL)
4589                 return;
4590
4591         view->presentation_state = EV_PRESENTATION_NORMAL;
4592         gdk_window_set_background (GTK_WIDGET (view)->window,
4593                                    &GTK_WIDGET (view)->style->black);
4594         gtk_widget_queue_draw (GTK_WIDGET (view));
4595 }
4596
4597 gboolean
4598 ev_view_next_page (EvView *view)
4599 {
4600         int page, n_pages;
4601
4602         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
4603
4604         if (!view->page_cache)
4605                 return FALSE;
4606
4607         ev_view_presentation_transition_stop (view);
4608         ev_view_reset_presentation_state (view);
4609
4610         page = ev_page_cache_get_current_page (view->page_cache);
4611         n_pages = ev_page_cache_get_n_pages (view->page_cache);
4612
4613         if (view->dual_page && !view->presentation)
4614                 page = page + 2;
4615         else
4616                 page = page + 1;
4617
4618         if (page < n_pages) {
4619                 ev_page_cache_set_current_page (view->page_cache, page);
4620                 return TRUE;
4621         } else if (view->presentation && page == n_pages) {
4622                 view->presentation_state = EV_PRESENTATION_END;
4623                 gtk_widget_queue_draw (GTK_WIDGET (view));
4624                 return TRUE;
4625         } else if (view->dual_page && page == n_pages) {
4626                 ev_page_cache_set_current_page (view->page_cache, page - 1);
4627                 return TRUE;
4628         } else {
4629                 return FALSE;
4630         }
4631 }
4632
4633 gboolean
4634 ev_view_previous_page (EvView *view)
4635 {
4636         int page;
4637
4638         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
4639
4640         if (!view->page_cache)
4641                 return FALSE;
4642
4643         if (view->presentation &&
4644             view->presentation_state == EV_PRESENTATION_END) {
4645                 ev_view_reset_presentation_state (view);
4646                 return TRUE;
4647         }
4648
4649         ev_view_reset_presentation_state (view);
4650
4651         page = ev_page_cache_get_current_page (view->page_cache);
4652
4653         if (view->dual_page && !view->presentation)
4654                 page = page - 2;
4655         else
4656                 page = page - 1;
4657
4658         if (page >= 0) {
4659                 ev_page_cache_set_current_page (view->page_cache, page);
4660                 return TRUE;
4661         } else if (ev_view_get_dual_page (view) && page == -1) {
4662                 ev_page_cache_set_current_page (view->page_cache, 0);
4663                 return TRUE;
4664         } else {
4665                 return FALSE;
4666         }
4667 }
4668
4669 /*** Enum description for usage in signal ***/
4670
4671 GType
4672 ev_sizing_mode_get_type (void)
4673 {
4674   static GType etype = 0;
4675   if (etype == 0) {
4676     static const GEnumValue values[] = {
4677       { EV_SIZING_FIT_WIDTH, "EV_SIZING_FIT_WIDTH", "fit-width" },
4678       { EV_SIZING_BEST_FIT, "EV_SIZING_BEST_FIT", "best-fit" },
4679       { EV_SIZING_FREE, "EV_SIZING_FREE", "free" },
4680       { 0, NULL, NULL }
4681     };
4682     etype = g_enum_register_static ("EvSizingMode", values);
4683   }
4684   return etype;
4685 }
4686
4687 GType
4688 ev_scroll_type_get_type (void)
4689 {
4690   static GType etype = 0;
4691   if (etype == 0) {
4692     static const GEnumValue values[] = {
4693       { EV_SCROLL_PAGE_FORWARD, "EV_SCROLL_PAGE_FORWARD", "scroll-page-forward" },
4694       { EV_SCROLL_PAGE_BACKWARD, "EV_SCROLL_PAGE_BACKWARD", "scroll-page-backward" },
4695       { EV_SCROLL_STEP_FORWARD, "EV_SCROLL_STEP_FORWARD", "scroll-step-forward" },
4696       { EV_SCROLL_STEP_FORWARD, "EV_SCROLL_STEP_FORWARD", "scroll-step-forward" },
4697       { EV_SCROLL_STEP_UP, "EV_SCROLL_STEP_UP", "scroll-step-up" },
4698       { EV_SCROLL_STEP_DOWN, "EV_SCROLL_STEP_DOWN", "scroll-step-down" },
4699       { 0, NULL, NULL }
4700     };
4701     etype = g_enum_register_static ("EvScrollType", values);
4702   }
4703   return etype;
4704 }