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 <math.h>
  22 #include <gtk/gtkalignment.h>
  23 #include <glib/gi18n.h>
  24 #include <gtk/gtkbindings.h>
  25 #include <gtk/gtkselection.h>
  26 #include <gtk/gtkclipboard.h>
  27 #include <gdk/gdkkeysyms.h>
  28 #include <libgnomevfs/gnome-vfs-utils.h>
  29
  30 #include "ev-marshal.h"
  31 #include "ev-view.h"
  32 #include "ev-utils.h"
  33 #include "ev-selection.h"
  34 #include "ev-document-find.h"
  35 #include "ev-document-misc.h"
  36 #include "ev-debug.h"
  37 #include "ev-job-queue.h"
  38 #include "ev-page-cache.h"
  39 #include "ev-pixbuf-cache.h"
  40
  41 #define EV_VIEW_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass), EV_TYPE_VIEW, EvViewClass))
  42 #define EV_IS_VIEW_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), EV_TYPE_VIEW))
  43 #define EV_VIEW_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj), EV_TYPE_VIEW, EvViewClass))
  44
  45
  46 enum {
  47         PROP_0,
  48         PROP_STATUS,
  49         PROP_FIND_STATUS,
  50         PROP_CONTINUOUS,
  51         PROP_DUAL_PAGE,
  52         PROP_FULLSCREEN,
  53         PROP_PRESENTATION,
  54         PROP_SIZING_MODE,
  55         PROP_ZOOM,
  56 };
  57
  58 enum {
  59         SIGNAL_BINDING_ACTIVATED,
  60         SIGNAL_ZOOM_INVALID,
  61         N_SIGNALS,
  62 };
  63
  64 enum {
  65         TARGET_STRING,
  66         TARGET_TEXT,
  67         TARGET_COMPOUND_TEXT,
  68         TARGET_UTF8_STRING,
  69         TARGET_TEXT_BUFFER_CONTENTS
  70 };
  71
  72 static const GtkTargetEntry targets[] = {
  73         { "STRING", 0, TARGET_STRING },
  74         { "TEXT",   0, TARGET_TEXT },
  75         { "COMPOUND_TEXT", 0, TARGET_COMPOUND_TEXT },
  76         { "UTF8_STRING", 0, TARGET_UTF8_STRING },
  77 };
  78
  79 static guint signals[N_SIGNALS];
  80
  81 typedef enum {
  82         EV_VIEW_CURSOR_NORMAL,
  83         EV_VIEW_CURSOR_IBEAM,
  84         EV_VIEW_CURSOR_LINK,
  85         EV_VIEW_CURSOR_WAIT,
  86         EV_VIEW_CURSOR_HIDDEN,
  87         EV_VIEW_CURSOR_DRAG
  88 } EvViewCursor;
  89
  90 typedef enum {
  91         EV_VIEW_FIND_NEXT,
  92         EV_VIEW_FIND_PREV
  93 } EvViewFindDirection;
  94
  95 #define ZOOM_IN_FACTOR  1.2
  96 #define ZOOM_OUT_FACTOR (1.0/ZOOM_IN_FACTOR)
  97
  98 #define MIN_SCALE 0.05409
  99 #define MAX_SCALE 4.0
 100
 101 /* Information for middle clicking and moving around the doc */
 102 typedef struct {
 103         gboolean in_drag;
 104         GdkPoint start;
 105         gdouble hadj;
 106         gdouble vadj;
 107 } DragInfo;
 108
 109 /* Information for handling selection */
 110 typedef struct {
 111         gboolean in_selection;
 112         GdkPoint start;
 113         GList *selections;
 114 } SelectionInfo;
 115
 116 typedef enum {
 117         SCROLL_TO_KEEP_POSITION,
 118         SCROLL_TO_CURRENT_PAGE,
 119         SCROLL_TO_CENTER
 120 } PendingScroll;
 121
 122 struct _EvView {
 123         GtkWidget parent_instance;
 124
 125         EvDocument *document;
 126
 127         char *status;
 128         char *find_status;
 129
 130         /* Scrolling */
 131         GtkAdjustment *hadjustment;
 132         GtkAdjustment *vadjustment;
 133
 134         gint scroll_x;
 135         gint scroll_y;
 136
 137         /* Information for middle clicking and dragging around. */
 138         DragInfo drag_info;
 139
 140         /* Selection */
 141         gint motion_x;
 142         gint motion_y;
 143         guint selection_update_id;
 144
 145         EvViewSelectionMode selection_mode;
 146         SelectionInfo selection_info;
 147
 148         int pressed_button;
 149         EvViewCursor cursor;
 150
 151         EvPageCache *page_cache;
 152         EvPixbufCache *pixbuf_cache;
 153
 154         gint start_page;
 155         gint end_page;
 156         gint current_page;
 157
 158         EvJobRender *current_job;
 159
 160         int find_page;
 161         int find_result;
 162         int spacing;
 163
 164         int rotation;
 165         double scale;
 166
 167         gboolean continuous;
 168         gboolean dual_page;
 169         gboolean fullscreen;
 170         gboolean presentation;
 171         EvSizingMode sizing_mode;
 172
 173         PendingScroll pending_scroll;
 174         gboolean pending_resize;
 175 };
 176
 177 struct _EvViewClass {
 178         GtkWidgetClass parent_class;
 179
 180         void    (*set_scroll_adjustments) (EvView         *view,
 181                                            GtkAdjustment  *hadjustment,
 182                                            GtkAdjustment  *vadjustment);
 183         void    (*binding_activated)      (EvView         *view,
 184                                            GtkScrollType   scroll,
 185                                            gboolean        horizontal);
 186         void    (*zoom_invalid)           (EvView         *view);
 187 };
 188
 189 /*** Scrolling ***/
 190 static void       scroll_to_current_page                     (EvView *view,
 191                                                               GtkOrientation orientation);
 192 static void       ev_view_set_scroll_adjustments             (EvView             *view,
 193                                                               GtkAdjustment      *hadjustment,
 194                                                               GtkAdjustment      *vadjustment);
 195 static void       view_update_range_and_current_page         (EvView             *view);
 196 static void       set_scroll_adjustment                      (EvView             *view,
 197                                                               GtkOrientation      orientation,
 198                                                               GtkAdjustment      *adjustment);
 199 static void       ev_view_set_scroll_adjustments             (EvView             *view,
 200                                                               GtkAdjustment      *hadjustment,
 201                                                               GtkAdjustment      *vadjustment);
 202 static void       add_scroll_binding_keypad                  (GtkBindingSet      *binding_set,
 203                                                               guint               keyval,
 204                                                               GtkScrollType       scroll,
 205                                                               gboolean            horizontal);
 206 static void       ev_view_binding_activated                  (EvView             *view,
 207                                                               GtkScrollType       scroll,
 208                                                               gboolean            horizontal);
 209 static void       ensure_rectangle_is_visible                (EvView             *view,
 210                                                               GdkRectangle       *rect);
 211
 212 /*** Geometry computations ***/
 213 static void       compute_border                             (EvView             *view,
 214                                                               int                 width,
 215                                                               int                 height,
 216                                                               GtkBorder          *border);
 217 static void       get_page_y_offset                          (EvView *view,
 218                                                               int page,
 219                                                               double zoom,
 220                                                               int *y_offset);
 221 static gboolean   get_page_extents                           (EvView             *view,
 222                                                               gint                page,
 223                                                               GdkRectangle       *page_area,
 224                                                               GtkBorder          *border);
 225 static void       view_rect_to_doc_rect                      (EvView             *view,
 226                                                               GdkRectangle       *view_rect,
 227                                                               GdkRectangle       *page_area,
 228                                                               EvRectangle        *doc_rect);
 229 static void       doc_rect_to_view_rect                      (EvView             *view,
 230                                                               int                 page,
 231                                                               EvRectangle        *doc_rect,
 232                                                               GdkRectangle       *view_rect);
 233 static void       find_page_at_location                      (EvView             *view,
 234                                                               gdouble             x,
 235                                                               gdouble             y,
 236                                                               gint               *page,
 237                                                               gint               *x_offset,
 238                                                               gint               *y_offset);
 239
 240 /*** Hyperrefs ***/
 241 static EvLink*    get_link_at_location                       (EvView             *view,
 242                                                               gdouble             x,
 243                                                               gdouble             y);
 244 static void       go_to_link                                 (EvView             *view,
 245                                                               EvLink             *link);
 246 static char*      status_message_from_link                   (EvView             *view,
 247                                                               EvLink             *link);
 248
 249 /*** GtkWidget implementation ***/
 250 static void       ev_view_size_request_continuous_dual_page  (EvView             *view,
 251                                                               GtkRequisition     *requisition);
 252 static void       ev_view_size_request_continuous            (EvView             *view,
 253                                                               GtkRequisition     *requisition);
 254 static void       ev_view_size_request_dual_page             (EvView             *view,
 255                                                               GtkRequisition     *requisition);
 256 static void       ev_view_size_request_single_page           (EvView             *view,
 257                                                               GtkRequisition     *requisition);
 258 static void       ev_view_size_request                       (GtkWidget          *widget,
 259                                                               GtkRequisition     *requisition);
 260 static void       ev_view_size_allocate                      (GtkWidget          *widget,
 261                                                               GtkAllocation      *allocation);
 262 static void       ev_view_realize                            (GtkWidget          *widget);
 263 static void       ev_view_unrealize                          (GtkWidget          *widget);
 264 static gboolean   ev_view_scroll_event                       (GtkWidget          *widget,
 265                                                               GdkEventScroll     *event);
 266 static gboolean   ev_view_expose_event                       (GtkWidget          *widget,
 267                                                               GdkEventExpose     *event);
 268 static gboolean   ev_view_button_press_event                 (GtkWidget          *widget,
 269                                                               GdkEventButton     *event);
 270 static gboolean   ev_view_motion_notify_event                (GtkWidget          *widget,
 271                                                               GdkEventMotion     *event);
 272 static gboolean   ev_view_button_release_event               (GtkWidget          *widget,
 273                                                               GdkEventButton     *event);
 274 static gboolean   ev_view_leave_notify_event                 (GtkWidget          *widget,
 275                                                               GdkEventCrossing   *event);
 276 static void       ev_view_style_set                          (GtkWidget          *widget,
 277                                                               GtkStyle           *old_style);
 278
 279 /*** Drawing ***/
 280 static guint32    ev_gdk_color_to_rgb                        (const GdkColor     *color);
 281 static void       draw_rubberband                            (GtkWidget          *widget,
 282                                                               GdkWindow          *window,
 283                                                               const GdkRectangle *rect,
 284                                                               guchar              alpha);
 285 static void       highlight_find_results                     (EvView             *view,
 286                                                               int                 page);
 287 static void       draw_one_page                              (EvView             *view,
 288                                                               gint                page,
 289                                                               GdkRectangle       *page_area,
 290                                                               GtkBorder          *border,
 291                                                               GdkRectangle       *expose_area);
 292
 293 /*** Callbacks ***/
 294 static void       find_changed_cb                            (EvDocument         *document,
 295                                                               int                 page,
 296                                                               EvView             *view);
 297 static void       job_finished_cb                            (EvPixbufCache      *pixbuf_cache,
 298                                                               EvView             *view);
 299 static void       page_changed_cb                            (EvPageCache        *page_cache,
 300                                                               int                 new_page,
 301                                                               EvView             *view);
 302 static void       on_adjustment_value_changed                (GtkAdjustment      *adjustment,
 303                                                               EvView             *view);
 304
 305 /*** GObject ***/
 306 static void       ev_view_finalize                           (GObject            *object);
 307 static void       ev_view_destroy                            (GtkObject          *object);
 308 static void       ev_view_set_property                       (GObject            *object,
 309                                                               guint               prop_id,
 310                                                               const GValue       *value,
 311                                                               GParamSpec         *pspec);
 312 static void       ev_view_get_property                       (GObject            *object,
 313                                                               guint               prop_id,
 314                                                               GValue             *value,
 315                                                               GParamSpec         *pspec);
 316 static void       ev_view_class_init                         (EvViewClass        *class);
 317 static void       ev_view_init                               (EvView             *view);
 318
 319 /*** Zoom and sizing ***/
 320 static double   zoom_for_size_fit_width                      (int doc_width,
 321                                                               int doc_height,
 322                                                               int target_width,
 323                                                               int target_height,
 324                                                               int vsb_width);
 325 static double   zoom_for_size_best_fit                       (int doc_width,
 326                                                               int doc_height,
 327                                                               int target_width,
 328                                                               int target_height,
 329                                                               int vsb_width,
 330                                                               int hsb_width);
 331 static void     ev_view_zoom_for_size_presentation           (EvView *view,
 332                                                               int     width,
 333                                                               int     height);
 334 static void     ev_view_zoom_for_size_continuous_and_dual_page (EvView *view,
 335                                                                 int     width,
 336                                                                 int     height,
 337                                                                 int     vsb_width,
 338                                                                 int     hsb_height);
 339 static void     ev_view_zoom_for_size_continuous               (EvView *view,
 340                                                                 int     width,
 341                                                                 int     height,
 342                                                                 int     vsb_width,
 343                                                                 int     hsb_height);
 344 static void     ev_view_zoom_for_size_dual_page                (EvView *view,
 345                                                                 int     width,
 346                                                                 int     height,
 347                                                                 int     vsb_width,
 348                                                                 int     hsb_height);
 349 static void     ev_view_zoom_for_size_single_page              (EvView *view,
 350                                                                 int     width,
 351                                                                 int     height,
 352                                                                 int     vsb_width,
 353                                                                 int     hsb_height);
 354 /*** Cursors ***/
 355 static GdkCursor* ev_view_create_invisible_cursor            (void);
 356 static void       ev_view_set_cursor                         (EvView             *view,
 357                                                               EvViewCursor        new_cursor);
 358
 359 /*** Status messages ***/
 360 static void       ev_view_set_status                         (EvView             *view,
 361                                                               const char         *message);
 362 static void       update_find_status_message                 (EvView             *view);
 363 static void       ev_view_set_find_status                    (EvView             *view,
 364                                                               const char         *message);
 365 /*** Find ***/
 366 static void       jump_to_find_result                        (EvView             *view);
 367 static void       jump_to_find_page                          (EvView             *view,
 368                                                               EvViewFindDirection direction);
 369
 370 /*** Selection ***/
 371 static void       compute_selections                         (EvView             *view,
 372                                                               GdkPoint           *start,
 373                                                               GdkPoint           *stop);
 374 static void       clear_selection                            (EvView             *view);
 375 static void       selection_free                             (EvViewSelection    *selection);
 376 static char*      get_selected_text                          (EvView             *ev_view);
 377 static void       ev_view_primary_get_cb                     (GtkClipboard       *clipboard,
 378                                                               GtkSelectionData   *selection_data,
 379                                                               guint               info,
 380                                                               gpointer            data);
 381 static void       ev_view_primary_clear_cb                   (GtkClipboard       *clipboard,
 382                                                               gpointer            data);
 383 static void       ev_view_update_primary_selection           (EvView             *ev_view);
 384
 385
 386 G_DEFINE_TYPE (EvView, ev_view, GTK_TYPE_WIDGET)
 387
 388 static void
 389 scroll_to_current_page (EvView *view, GtkOrientation orientation)
 390 {
 391         GdkRectangle page_area;
 392         GtkBorder border;
 393
 394         if (view->document == NULL) {
 395                 return;
 396         }
 397
 398         get_page_extents (view, view->current_page, &page_area, &border);
 399
 400         if (orientation == GTK_ORIENTATION_VERTICAL) {
 401                 if (view->continuous) {
 402                         gtk_adjustment_clamp_page (view->vadjustment,
 403                                                    page_area.y - view->spacing,
 404                                                    page_area.y + view->vadjustment->page_size);
 405                 } else {
 406                         gtk_adjustment_set_value (view->vadjustment,
 407                                                   view->vadjustment->lower);
 408                 }
 409         } else {
 410                 if (view->dual_page) {
 411                         gtk_adjustment_clamp_page (view->hadjustment,
 412                                                    page_area.x,
 413                                                    page_area.x + view->hadjustment->page_size);
 414                 } else {
 415                         gtk_adjustment_set_value (view->hadjustment,
 416                                                   CLAMP (view->hadjustment->value,
 417                                                   view->hadjustment->lower,
 418                                                   view->hadjustment->upper -
 419                                                   view->hadjustment->page_size));
 420                 }
 421         }
 422 }
 423
 424 static void
 425 view_set_adjustment_values (EvView         *view,
 426                             GtkOrientation  orientation)
 427 {
 428         GtkWidget *widget = GTK_WIDGET (view);
 429         GtkAdjustment *adjustment;
 430         int requisition;
 431         int allocation;
 432
 433         double factor;
 434         gint new_value;
 435
 436         if (orientation == GTK_ORIENTATION_HORIZONTAL)  {
 437                 requisition = widget->requisition.width;
 438                 allocation = widget->allocation.width;
 439                 adjustment = view->hadjustment;
 440         } else {
 441                 requisition = widget->requisition.height;
 442                 allocation = widget->allocation.height;
 443                 adjustment = view->vadjustment;
 444         }
 445
 446         if (!adjustment)
 447                 return;
 448
 449         factor = 1.0;
 450         switch (view->pending_scroll) {
 451                 case SCROLL_TO_KEEP_POSITION:
 452                         factor = (adjustment->value) / adjustment->upper;
 453                         break;
 454                 case SCROLL_TO_CURRENT_PAGE:
 455                         break;
 456                 case SCROLL_TO_CENTER:
 457                         factor = (adjustment->value + adjustment->page_size * 0.5) / adjustment->upper;
 458                         break;
 459         }
 460
 461         adjustment->page_size = allocation;
 462         adjustment->step_increment = allocation * 0.1;
 463         adjustment->page_increment = allocation * 0.9;
 464         adjustment->lower = 0;
 465         adjustment->upper = MAX (allocation, requisition);
 466
 467         /*
 468          * We add 0.5 to the values before to average out our rounding errors.
 469          */
 470         switch (view->pending_scroll) {
 471                 case SCROLL_TO_KEEP_POSITION:
 472                         new_value = CLAMP (adjustment->upper * factor + 0.5, 0, adjustment->upper - adjustment->page_size);
 473                         gtk_adjustment_set_value (adjustment, (int)new_value);
 474                         break;
 475                 case SCROLL_TO_CURRENT_PAGE:
 476                         scroll_to_current_page (view, orientation);
 477                         break;
 478                 case SCROLL_TO_CENTER:
 479                         new_value = CLAMP (adjustment->upper * factor - adjustment->page_size * 0.5 + 0.5,
 480                                            0, adjustment->upper - adjustment->page_size);
 481                         gtk_adjustment_set_value (adjustment, (int)new_value);
 482                         break;
 483         }
 484
 485         gtk_adjustment_changed (adjustment);
 486 }
 487
 488 static void
 489 view_update_range_and_current_page (EvView *view)
 490 {
 491         if (view->pending_scroll != SCROLL_TO_KEEP_POSITION)
 492                 return;
 493
 494         /* Presentation trumps all other modes */
 495         if (view->presentation) {
 496                 view->start_page = view->current_page;
 497                 view->end_page = view->current_page;
 498         } else if (view->continuous) {
 499                 GdkRectangle current_area, unused, page_area;
 500                 GtkBorder border;
 501                 gint current_page;
 502                 gboolean found = FALSE;
 503                 int i;
 504
 505                 if (!(view->vadjustment && view->hadjustment))
 506                         return;
 507
 508                 current_area.x = view->hadjustment->value;
 509                 current_area.width = view->hadjustment->upper;
 510                 current_area.y = view->vadjustment->value;
 511                 current_area.height = view->vadjustment->page_size;
 512
 513                 for (i = 0; i < ev_page_cache_get_n_pages (view->page_cache); i++) {
 514
 515                         get_page_extents (view, i, &page_area, &border);
 516
 517                         if (gdk_rectangle_intersect (&current_area, &page_area, &unused)) {
 518                                 if (! found) {
 519                                         view->start_page = i;
 520                                         found = TRUE;
 521
 522                                 }
 523                                 view->end_page = i;
 524                         } else if (found) {
 525                                 break;
 526                         }
 527                 }
 528
 529                 current_page = ev_page_cache_get_current_page (view->page_cache);
 530
 531                 if (current_page < view->start_page || current_page > view->end_page) {
 532                         view->current_page = view->start_page;
 533                         ev_page_cache_set_current_page (view->page_cache, view->start_page);
 534                 }
 535         } else {
 536                 if (view->dual_page) {
 537                         if (view->current_page % 2 == 0) {
 538                                 view->start_page = view->current_page;
 539                                 if (view->current_page + 1 < ev_page_cache_get_n_pages (view->page_cache))
 540                                         view->end_page = view->start_page + 1;
 541                         } else {
 542                                 view->start_page = view->current_page - 1;
 543                                 view->end_page = view->current_page;
 544                         }
 545                 } else {
 546                         view->start_page = view->current_page;
 547                         view->end_page = view->current_page;
 548                 }
 549         }
 550
 551         ev_pixbuf_cache_set_page_range (view->pixbuf_cache,
 552                                         view->start_page,
 553                                         view->end_page,
 554                                         view->rotation,
 555                                         view->scale,
 556                                         view->selection_info.selections);
 557 }
 558
 559 static void
 560 set_scroll_adjustment (EvView *view,
 561                        GtkOrientation  orientation,
 562                        GtkAdjustment  *adjustment)
 563 {
 564         GtkAdjustment **to_set;
 565
 566         if (orientation == GTK_ORIENTATION_HORIZONTAL)
 567                 to_set = &view->hadjustment;
 568         else
 569                 to_set = &view->vadjustment;
 570
 571         if (*to_set != adjustment) {
 572                 if (*to_set) {
 573                         g_signal_handlers_disconnect_by_func (*to_set,
 574                                                               (gpointer) on_adjustment_value_changed,
 575                                                               view);
 576                         g_object_unref (*to_set);
 577                 }
 578
 579                 *to_set = adjustment;
 580                 view_set_adjustment_values (view, orientation);
 581
 582                 if (*to_set) {
 583                         g_object_ref (*to_set);
 584                         g_signal_connect (*to_set, "value_changed",
 585                                           G_CALLBACK (on_adjustment_value_changed), view);
 586                 }
 587         }
 588 }
 589
 590 static void
 591 ev_view_set_scroll_adjustments (EvView *view,
 592                                 GtkAdjustment  *hadjustment,
 593                                 GtkAdjustment  *vadjustment)
 594 {
 595         set_scroll_adjustment (view, GTK_ORIENTATION_HORIZONTAL, hadjustment);
 596         set_scroll_adjustment (view, GTK_ORIENTATION_VERTICAL, vadjustment);
 597
 598         on_adjustment_value_changed (NULL, view);
 599 }
 600
 601 static void
 602 add_scroll_binding_keypad (GtkBindingSet  *binding_set,
 603                            guint           keyval,
 604                            GtkScrollType   scroll,
 605                            gboolean        horizontal)
 606 {
 607   guint keypad_keyval = keyval - GDK_Left + GDK_KP_Left;
 608
 609   gtk_binding_entry_add_signal (binding_set, keyval, 0,
 610                                 "binding_activated", 2,
 611                                 GTK_TYPE_SCROLL_TYPE, scroll,
 612                                 G_TYPE_BOOLEAN, horizontal);
 613   gtk_binding_entry_add_signal (binding_set, keypad_keyval, 0,
 614                                 "binding_activated", 2,
 615                                 GTK_TYPE_SCROLL_TYPE, scroll,
 616                                 G_TYPE_BOOLEAN, horizontal);
 617 }
 618
 619 void
 620 ev_view_scroll (EvView        *view,
 621                 EvScrollType   scroll)
 622 {
 623         GtkAdjustment *adjustment;
 624         double value, increment;
 625         gboolean first_page = FALSE;
 626         gboolean last_page = FALSE;
 627
 628         /* Assign values for increment and vertical adjustment */
 629         adjustment = view->vadjustment;
 630         increment = adjustment->page_size * 0.75;
 631         value = adjustment->value;
 632
 633         /* Assign boolean for first and last page */
 634         if (view->current_page == 0)
 635                 first_page = TRUE;
 636         if (view->current_page == ev_page_cache_get_n_pages (view->page_cache) - 1)
 637                 last_page = TRUE;
 638
 639         switch (scroll) {
 640                 case EV_SCROLL_PAGE_BACKWARD:
 641                         /* Do not jump backwards if at the first page */
 642                         if (value == (adjustment->lower) && first_page) {
 643                                 /* Do nothing */
 644                                 /* At the top of a page, assign the upper bound limit of previous page */
 645                         } else if (value == (adjustment->lower)) {
 646                                 value = adjustment->upper - adjustment->page_size;
 647                                 ev_page_cache_set_current_page (view->page_cache, view->current_page - 1);
 648                                 /* Jump to the top */
 649                         } else {
 650                                 value = MAX (value - increment, adjustment->lower);
 651                         }
 652                         break;
 653                 case EV_SCROLL_PAGE_FORWARD:
 654                         /* Do not jump forward if at the last page */
 655                         if (value == (adjustment->upper - adjustment->page_size) && last_page) {
 656                                 /* Do nothing */
 657                         /* At the bottom of a page, assign the lower bound limit of next page */
 658                         } else if (value == (adjustment->upper - adjustment->page_size)) {
 659                                 value = 0;
 660                                 ev_page_cache_set_current_page (view->page_cache, view->current_page + 1);
 661                         /* Jump to the bottom */
 662                         } else {
 663                                 value = MIN (value + increment, adjustment->upper - adjustment->page_size);
 664                         }
 665                         break;
 666                 default:
 667                         break;
 668         }
 669
 670         gtk_adjustment_set_value (adjustment, value);
 671 }
 672
 673 static void
 674 ev_view_binding_activated (EvView *view,
 675                            GtkScrollType scroll,
 676                            gboolean horizontal)
 677 {
 678         GtkAdjustment *adjustment;
 679         double value;
 680
 681         if (view->presentation) {
 682                 switch (scroll) {
 683                         case GTK_SCROLL_STEP_BACKWARD:
 684                                 ev_page_cache_prev_page (view->page_cache);
 685                                 break;
 686                         case GTK_SCROLL_STEP_FORWARD:
 687                                 ev_page_cache_next_page (view->page_cache);
 688                                 break;
 689                         default:
 690                                 break;
 691                 }
 692                 return;
 693         }
 694
 695         if (horizontal) {
 696                 adjustment = view->hadjustment;
 697         } else {
 698                 adjustment = view->vadjustment;
 699         }
 700
 701         value = adjustment->value;
 702
 703         switch (scroll) {
 704                 case GTK_SCROLL_STEP_BACKWARD:
 705                         value -= adjustment->step_increment;
 706                         break;
 707                 case GTK_SCROLL_STEP_FORWARD:
 708                         value += adjustment->step_increment;
 709                         break;
 710                 default:
 711                         break;
 712         }
 713
 714         value = CLAMP (value, adjustment->lower,
 715                        adjustment->upper - adjustment->page_size);
 716
 717         gtk_adjustment_set_value (adjustment, value);
 718 }
 719
 720 #define MARGIN 5
 721
 722 static void
 723 ensure_rectangle_is_visible (EvView *view, GdkRectangle *rect)
 724 {
 725         GtkWidget *widget = GTK_WIDGET (view);
 726         GtkAdjustment *adjustment;
 727         int value;
 728
 729         view->pending_scroll = SCROLL_TO_KEEP_POSITION;
 730
 731         adjustment = view->vadjustment;
 732
 733         if (rect->y < adjustment->value) {
 734                 value = MAX (adjustment->lower, rect->y - MARGIN);
 735                 gtk_adjustment_set_value (view->vadjustment, value);
 736         } else if (rect->y + rect->height >
 737                    adjustment->value + widget->allocation.height) {
 738                 value = MIN (adjustment->upper, rect->y + rect->height -
 739                              widget->allocation.height + MARGIN);
 740                 gtk_adjustment_set_value (view->vadjustment, value);
 741         }
 742
 743         adjustment = view->hadjustment;
 744
 745         if (rect->x < adjustment->value) {
 746                 value = MAX (adjustment->lower, rect->x - MARGIN);
 747                 gtk_adjustment_set_value (view->hadjustment, value);
 748         } else if (rect->x + rect->height >
 749                    adjustment->value + widget->allocation.width) {
 750                 value = MIN (adjustment->upper, rect->x + rect->width -
 751                              widget->allocation.width + MARGIN);
 752                 gtk_adjustment_set_value (view->hadjustment, value);
 753         }
 754 }
 755
 756 /*** Geometry computations ***/
 757
 758 static void
 759 compute_border (EvView *view, int width, int height, GtkBorder *border)
 760 {
 761         if (view->presentation) {
 762                 border->left = 0;
 763                 border->right = 0;
 764                 border->top = 0;
 765                 border->bottom = 0;
 766         } else {
 767                 ev_document_misc_get_page_border_size (width, height, border);
 768         }
 769 }
 770
 771 static void
 772 get_page_y_offset (EvView *view, int page, double zoom, int *y_offset)
 773 {
 774         int max_width, offset;
 775         GtkBorder border;
 776
 777         g_return_if_fail (y_offset != NULL);
 778
 779         ev_page_cache_get_max_width (view->page_cache, view->rotation, zoom, &max_width);
 780
 781         compute_border (view, max_width, max_width, &border);
 782
 783         if (view->dual_page) {
 784                 ev_page_cache_get_height_to_page (view->page_cache, page,
 785                                                   view->rotation, zoom, NULL, &offset);
 786                 offset += (page / 2 + 1) * view->spacing + (page / 2) * (border.top + border.bottom);
 787         } else {
 788                 ev_page_cache_get_height_to_page (view->page_cache, page,
 789                                                   view->rotation, zoom, &offset, NULL);
 790                 offset += (page + 1) * view->spacing + page * (border.top + border.bottom);
 791         }
 792
 793         *y_offset = offset;
 794         return;
 795 }
 796
 797 static gboolean
 798 get_page_extents (EvView       *view,
 799                   gint          page,
 800                   GdkRectangle *page_area,
 801                   GtkBorder    *border)
 802 {
 803         GtkWidget *widget;
 804         int width, height;
 805
 806         widget = GTK_WIDGET (view);
 807
 808         /* Get the size of the page */
 809         ev_page_cache_get_size (view->page_cache, page,
 810                                 view->rotation,
 811                                 view->scale,
 812                                 &width, &height);
 813         compute_border (view, width, height, border);
 814         page_area->width = width + border->left + border->right;
 815         page_area->height = height + border->top + border->bottom;
 816
 817         if (view->presentation) {
 818                 page_area->x = (MAX (0, widget->allocation.width - width))/2;
 819                 page_area->y = (MAX (0, widget->allocation.height - height))/2;
 820         } else if (view->continuous) {
 821                 gint max_width;
 822                 gint x, y;
 823
 824                 ev_page_cache_get_max_width (view->page_cache, view->rotation,
 825                                              view->scale, &max_width);
 826                 max_width = max_width + border->left + border->right;
 827                 /* Get the location of the bounding box */
 828                 if (view->dual_page) {
 829                         x = view->spacing + (page % 2) * (max_width + view->spacing);
 830                         x = x + MAX (0, widget->allocation.width - (max_width * 2 + view->spacing * 3)) / 2;
 831                         if (page % 2 == 0)
 832                                 x = x + (max_width - width - border->left - border->right);
 833                 } else {
 834                         x = view->spacing;
 835                         x = x + MAX (0, widget->allocation.width - (width + view->spacing * 2)) / 2;
 836                 }
 837
 838                 get_page_y_offset (view, page, view->scale, &y);
 839
 840                 page_area->x = x;
 841                 page_area->y = y;
 842         } else {
 843                 gint x, y;
 844                 if (view->dual_page) {
 845                         gint width_2, height_2;
 846                         gint max_width = width;
 847                         gint max_height = height;
 848                         GtkBorder overall_border;
 849                         gint other_page;
 850
 851                         other_page = page ^ 1;
 852
 853                         /* First, we get the bounding box of the two pages */
 854                         if (other_page < ev_page_cache_get_n_pages (view->page_cache)) {
 855                                 ev_page_cache_get_size (view->page_cache,
 856                                                         other_page,
 857                                                         view->rotation,
 858                                                         view->scale,
 859                                                         &width_2, &height_2);
 860                                 if (width_2 > width)
 861                                         max_width = width_2;
 862                                 if (height_2 > height)
 863                                         max_height = height_2;
 864                         }
 865                         compute_border (view, max_width, max_height, &overall_border);
 866
 867                         /* Find the offsets */
 868                         x = view->spacing;
 869                         y = view->spacing;
 870
 871                         /* Adjust for being the left or right page */
 872                         if (page % 2 == 0)
 873                                 x = x + max_width - width;
 874                         else
 875                                 x = x + (max_width + overall_border.left + overall_border.right) + view->spacing;
 876
 877                         y = y + (max_height - height)/2;
 878
 879                         /* Adjust for extra allocation */
 880                         x = x + MAX (0, widget->allocation.width -
 881                                      ((max_width + overall_border.left + overall_border.right) * 2 + view->spacing * 3))/2;
 882                         y = y + MAX (0, widget->allocation.height - (height + view->spacing * 2))/2;
 883                 } else {
 884                         x = view->spacing;
 885                         y = view->spacing;
 886
 887                         /* Adjust for extra allocation */
 888                         x = x + MAX (0, widget->allocation.width - (width + border->left + border->right + view->spacing * 2))/2;
 889                         y = y + MAX (0, widget->allocation.height - (height + border->top + border->bottom +  view->spacing * 2))/2;
 890                 }
 891
 892                 page_area->x = x;
 893                 page_area->y = y;
 894         }
 895
 896         return TRUE;
 897 }
 898
 899 static void
 900 view_point_to_doc_point (EvView *view,
 901                          GdkPoint *view_point,
 902                          GdkRectangle *page_area,
 903                          double  *doc_point_x,
 904                          double  *doc_point_y)
 905 {
 906         *doc_point_x = (double) (view_point->x - page_area->x) / view->scale;
 907         *doc_point_y = (double) (view_point->y - page_area->y) / view->scale;
 908 }
 909
 910 static void
 911 view_rect_to_doc_rect (EvView *view,
 912                        GdkRectangle *view_rect,
 913                        GdkRectangle *page_area,
 914                        EvRectangle  *doc_rect)
 915 {
 916         doc_rect->x1 = (double) (view_rect->x - page_area->x) / view->scale;
 917         doc_rect->y1 = (double) (view_rect->y - page_area->y) / view->scale;
 918         doc_rect->x2 = doc_rect->x1 + (double) view_rect->width / view->scale;
 919         doc_rect->y2 = doc_rect->y1 + (double) view_rect->height / view->scale;
 920 }
 921
 922 static void
 923 doc_rect_to_view_rect (EvView       *view,
 924                        int           page,
 925                        EvRectangle  *doc_rect,
 926                        GdkRectangle *view_rect)
 927 {
 928         GdkRectangle page_area;
 929         GtkBorder border;
 930         double x, y, w, h;
 931         int width, height;
 932
 933         ev_page_cache_get_size (view->page_cache, page,
 934                                 view->rotation,
 935                                 1.0,
 936                                 &width, &height);
 937
 938         if (view->rotation == 0) {
 939                 x = doc_rect->x1;
 940                 y = doc_rect->y1;
 941                 w = doc_rect->x2 - doc_rect->x1;
 942                 h = doc_rect->y2 - doc_rect->y1;
 943         } else if (view->rotation == 90) {
 944                 x = width - doc_rect->y2;
 945                 y = doc_rect->x1;
 946                 w = doc_rect->y2 - doc_rect->y1;
 947                 h = doc_rect->x2 - doc_rect->x1;
 948         } else if (view->rotation == 180) {
 949                 x = width - doc_rect->x2;
 950                 y = height - doc_rect->y2;
 951                 w = doc_rect->x2 - doc_rect->x1;
 952                 h = doc_rect->y2 - doc_rect->y1;
 953         } else if (view->rotation == 270) {
 954                 x = doc_rect->y1;
 955                 y = height - doc_rect->x2;
 956                 w = doc_rect->y2 - doc_rect->y1;
 957                 h = doc_rect->x2 - doc_rect->x1;
 958         } else {
 959                 g_assert_not_reached ();
 960         }
 961
 962         get_page_extents (view, page, &page_area, &border);
 963
 964         view_rect->x = x * view->scale + page_area.x;
 965         view_rect->y = y * view->scale + page_area.y;
 966         view_rect->width = w * view->scale;
 967         view_rect->height = h * view->scale;
 968 }
 969
 970 static void
 971 find_page_at_location (EvView  *view,
 972                        gdouble  x,
 973                        gdouble  y,
 974                        gint    *page,
 975                        gint    *x_offset,
 976                        gint    *y_offset)
 977 {
 978         int i;
 979
 980         if (view->document == NULL)
 981                 return;
 982
 983         g_assert (page);
 984         g_assert (x_offset);
 985         g_assert (y_offset);
 986
 987         for (i = view->start_page; i <= view->end_page; i++) {
 988                 GdkRectangle page_area;
 989                 GtkBorder border;
 990
 991                 if (! get_page_extents (view, i, &page_area, &border))
 992                         continue;
 993
 994                 if ((x >= page_area.x + border.left) &&
 995                     (x < page_area.x + page_area.width - border.right) &&
 996                     (y >= page_area.y + border.top) &&
 997                     (y < page_area.y + page_area.height - border.bottom)) {
 998                         *page = i;
 999                         *x_offset = x - (page_area.x + border.left);
1000                         *y_offset = y - (page_area.y + border.top);
1001                         return;
1002                 }
1003         }
1004
1005         *page = -1;
1006 }
1007
1008 static gboolean
1009 location_in_text (EvView  *view,
1010                   gdouble  x,
1011                   gdouble  y)
1012 {
1013         GdkRegion *region;
1014         gint page = -1;
1015         gint x_offset = 0, y_offset = 0;
1016
1017         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1018
1019         if (page == -1)
1020                 return FALSE;
1021
1022         region = ev_pixbuf_cache_get_text_mapping (view->pixbuf_cache, page);
1023
1024         if (region)
1025                 return gdk_region_point_in (region, x_offset / view->scale, y_offset / view->scale);
1026         else
1027                 return FALSE;
1028 }
1029
1030 /*** Hyperref ***/
1031 static EvLink *
1032 get_link_at_location (EvView  *view,
1033                       gdouble  x,
1034                       gdouble  y)
1035 {
1036         gint page = -1;
1037         gint x_offset = 0, y_offset = 0;
1038         GList *link_mapping;
1039
1040         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1041
1042         if (page == -1)
1043                 return NULL;
1044
1045         link_mapping = ev_pixbuf_cache_get_link_mapping (view->pixbuf_cache, page);
1046
1047         if (link_mapping)
1048                 return ev_link_mapping_find (link_mapping, x_offset / view->scale, y_offset / view->scale);
1049         else
1050                 return NULL;
1051 }
1052
1053 /* FIXME: standardize this sometime */
1054 static void
1055 go_to_link (EvView *view, EvLink *link)
1056 {
1057         EvLinkType type;
1058         const char *uri;
1059         int page;
1060
1061         type = ev_link_get_link_type (link);
1062
1063         switch (type) {
1064                 case EV_LINK_TYPE_TITLE:
1065                         break;
1066                 case EV_LINK_TYPE_PAGE:
1067                         page = ev_link_get_page (link);
1068                         ev_page_cache_set_current_page (view->page_cache, page);
1069                         break;
1070                 case EV_LINK_TYPE_EXTERNAL_URI:
1071                         uri = ev_link_get_uri (link);
1072                         gnome_vfs_url_show (uri);
1073                         break;
1074         }
1075 }
1076
1077 static char *
1078 status_message_from_link (EvView *view, EvLink *link)
1079 {
1080         EvLinkType type;
1081         char *msg = NULL;
1082         char *page_label;
1083
1084         type = ev_link_get_link_type (link);
1085
1086         switch (type) {
1087                 case EV_LINK_TYPE_TITLE:
1088                         if (ev_link_get_title (link))
1089                                 msg = g_strdup (ev_link_get_title (link));
1090                         break;
1091                 case EV_LINK_TYPE_PAGE:
1092                         page_label = ev_page_cache_get_page_label (view->page_cache, ev_link_get_page (link));
1093                         msg = g_strdup_printf (_("Go to page %s"), page_label);
1094                         g_free (page_label);
1095                         break;
1096                 case EV_LINK_TYPE_EXTERNAL_URI:
1097                         msg = g_strdup (ev_link_get_uri (link));
1098                         break;
1099                 default:
1100                         break;
1101         }
1102
1103         return msg;
1104 }
1105
1106
1107 /*** GtkWidget implementation ***/
1108
1109 static void
1110 ev_view_size_request_continuous_dual_page (EvView         *view,
1111                                            GtkRequisition *requisition)
1112 {
1113         int max_width;
1114         gint n_pages;
1115         GtkBorder border;
1116
1117         ev_page_cache_get_max_width (view->page_cache, view->rotation,
1118                                      view->scale, &max_width);
1119         compute_border (view, max_width, max_width, &border);
1120
1121         n_pages = ev_page_cache_get_n_pages (view->page_cache) + 1;
1122
1123         requisition->width = (max_width + border.left + border.right) * 2 + (view->spacing * 3);
1124         get_page_y_offset (view, n_pages, view->scale, &requisition->height);
1125
1126         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
1127                 requisition->width = 1;
1128         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
1129                 requisition->width = 1;
1130                 /* FIXME: This could actually be set on one page docs or docs
1131                  * with a strange aspect ratio. */
1132                 /* requisition->height = 1;*/
1133         }
1134 }
1135
1136 static void
1137 ev_view_size_request_continuous (EvView         *view,
1138                                  GtkRequisition *requisition)
1139 {
1140         int max_width;
1141         int n_pages;
1142         GtkBorder border;
1143
1144
1145         ev_page_cache_get_max_width (view->page_cache, view->rotation,
1146                                      view->scale, &max_width);
1147         n_pages = ev_page_cache_get_n_pages (view->page_cache);
1148         compute_border (view, max_width, max_width, &border);
1149
1150         requisition->width = max_width + (view->spacing * 2) + border.left + border.right;
1151         get_page_y_offset (view, n_pages, view->scale, &requisition->height);
1152
1153         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
1154                 requisition->width = 1;
1155         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
1156                 requisition->width = 1;
1157                 /* FIXME: This could actually be set on one page docs or docs
1158                  * with a strange aspect ratio. */
1159                 /* requisition->height = 1;*/
1160         }
1161 }
1162
1163 static void
1164 ev_view_size_request_dual_page (EvView         *view,
1165                                 GtkRequisition *requisition)
1166 {
1167         GtkBorder border;
1168         gint width, height;
1169
1170         /* Find the largest of the two. */
1171         ev_page_cache_get_size (view->page_cache,
1172                                 view->current_page,
1173                                 view->rotation,
1174                                 view->scale,
1175                                 &width, &height);
1176         if (view->current_page + 1 < ev_page_cache_get_n_pages (view->page_cache)) {
1177                 gint width_2, height_2;
1178                 ev_page_cache_get_size (view->page_cache,
1179                                         view->current_page + 1,
1180                                         view->rotation,
1181                                         view->scale,
1182                                         &width_2, &height_2);
1183                 if (width_2 > width) {
1184                         width = width_2;
1185                         height = height_2;
1186                 }
1187         }
1188         compute_border (view, width, height, &border);
1189
1190         requisition->width = ((width + border.left + border.right) * 2) +
1191                 (view->spacing * 3);
1192         requisition->height = (height + border.top + border.bottom) +
1193                 (view->spacing * 2);
1194
1195         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
1196                 requisition->width = 1;
1197         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
1198                 requisition->width = 1;
1199                 requisition->height = 1;
1200         }
1201 }
1202
1203 static void
1204 ev_view_size_request_single_page (EvView         *view,
1205                                   GtkRequisition *requisition)
1206 {
1207         GtkBorder border;
1208         gint width, height;
1209
1210         ev_page_cache_get_size (view->page_cache,
1211                                 view->current_page,
1212                                 view->rotation,
1213                                 view->scale,
1214                                 &width, &height);
1215         compute_border (view, width, height, &border);
1216
1217         requisition->width = width + border.left + border.right + (2 * view->spacing);
1218         requisition->height = height + border.top + border.bottom + (2 * view->spacing);
1219
1220         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
1221                 requisition->width = 1;
1222                 requisition->height = height + border.top + border.bottom + (2 * view->spacing);
1223         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
1224                 requisition->width = 1;
1225                 requisition->height = 1;
1226         }
1227 }
1228
1229 static void
1230 ev_view_size_request (GtkWidget      *widget,
1231                       GtkRequisition *requisition)
1232 {
1233         EvView *view = EV_VIEW (widget);
1234
1235         if (view->document == NULL) {
1236                 requisition->width = 1;
1237                 requisition->height = 1;
1238                 return;
1239         }
1240
1241         if (view->presentation) {
1242                 requisition->width = 1;
1243                 requisition->height = 1;
1244                 return;
1245         }
1246
1247         if (view->continuous && view->dual_page)
1248                 ev_view_size_request_continuous_dual_page (view, requisition);
1249         else if (view->continuous)
1250                 ev_view_size_request_continuous (view, requisition);
1251         else if (view->dual_page)
1252                 ev_view_size_request_dual_page (view, requisition);
1253         else
1254                 ev_view_size_request_single_page (view, requisition);
1255 }
1256
1257 static void
1258 ev_view_size_allocate (GtkWidget      *widget,
1259                        GtkAllocation  *allocation)
1260 {
1261         EvView *view = EV_VIEW (widget);
1262
1263         if (view->sizing_mode == EV_SIZING_FIT_WIDTH ||
1264                   view->sizing_mode == EV_SIZING_BEST_FIT) {
1265
1266                 g_signal_emit (view, signals[SIGNAL_ZOOM_INVALID], 0);
1267
1268                 ev_view_size_request (widget, &widget->requisition);
1269         }
1270
1271         view_set_adjustment_values (view, GTK_ORIENTATION_HORIZONTAL);
1272         view_set_adjustment_values (view, GTK_ORIENTATION_VERTICAL);
1273
1274         view->pending_scroll = SCROLL_TO_KEEP_POSITION;
1275         view->pending_resize = FALSE;
1276
1277         if (view->document)
1278                 view_update_range_and_current_page (view);
1279
1280         GTK_WIDGET_CLASS (ev_view_parent_class)->size_allocate (widget, allocation);
1281 }
1282
1283 static void
1284 ev_view_realize (GtkWidget *widget)
1285 {
1286         EvView *view = EV_VIEW (widget);
1287         GdkWindowAttr attributes;
1288
1289         GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
1290
1291
1292         attributes.window_type = GDK_WINDOW_CHILD;
1293         attributes.wclass = GDK_INPUT_OUTPUT;
1294         attributes.visual = gtk_widget_get_visual (widget);
1295         attributes.colormap = gtk_widget_get_colormap (widget);
1296
1297         attributes.x = widget->allocation.x;
1298         attributes.y = widget->allocation.y;
1299         attributes.width = widget->allocation.width;
1300         attributes.height = widget->allocation.height;
1301         attributes.event_mask = GDK_EXPOSURE_MASK |
1302                                 GDK_BUTTON_PRESS_MASK |
1303                                 GDK_BUTTON_RELEASE_MASK |
1304                                 GDK_SCROLL_MASK |
1305                                 GDK_KEY_PRESS_MASK |
1306                                 GDK_POINTER_MOTION_MASK |
1307                                 GDK_LEAVE_NOTIFY_MASK;
1308
1309         widget->window = gdk_window_new (gtk_widget_get_parent_window (widget),
1310                                          &attributes,
1311                                          GDK_WA_X | GDK_WA_Y |
1312                                          GDK_WA_COLORMAP |
1313                                          GDK_WA_VISUAL);
1314         gdk_window_set_user_data (widget->window, widget);
1315         widget->style = gtk_style_attach (widget->style, widget->window);
1316
1317         if (view->presentation)
1318                 gdk_window_set_background (widget->window, &widget->style->black);
1319         else
1320                 gdk_window_set_background (widget->window, &widget->style->mid [GTK_STATE_NORMAL]);
1321 }
1322
1323 static void
1324 ev_view_unrealize (GtkWidget *widget)
1325 {
1326         GTK_WIDGET_CLASS (ev_view_parent_class)->unrealize (widget);
1327 }
1328
1329 static gboolean
1330 ev_view_scroll_event (GtkWidget *widget, GdkEventScroll *event)
1331 {
1332         EvView *view = EV_VIEW (widget);
1333
1334         if ((event->state & GDK_CONTROL_MASK) != 0) {
1335
1336                  ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1337
1338                  if (event->direction == GDK_SCROLL_UP ||
1339                         event->direction == GDK_SCROLL_LEFT) {
1340                             if (ev_view_can_zoom_in (view)) {
1341                                     ev_view_zoom_in (view);
1342                             }
1343                  } else {
1344                             if (ev_view_can_zoom_out (view)) {
1345                                     ev_view_zoom_out (view);
1346                             }
1347                  }
1348                  return TRUE;
1349         }
1350
1351         if ((event->state & GDK_SHIFT_MASK) != 0) {
1352                 if (event->direction == GDK_SCROLL_UP)
1353                         event->direction = GDK_SCROLL_LEFT;
1354                 if (event->direction == GDK_SCROLL_DOWN)
1355                         event->direction = GDK_SCROLL_RIGHT;
1356         }
1357
1358         return FALSE;
1359 }
1360
1361 static EvViewSelection *
1362 find_selection_for_page (EvView *view,
1363                          gint    page)
1364 {
1365         GList *list;
1366
1367         for (list = view->selection_info.selections; list != NULL; list = list->next) {
1368                 EvViewSelection *selection;
1369
1370                 selection = (EvViewSelection *) list->data;
1371
1372                 if (selection->page == page)
1373                         return selection;
1374         }
1375
1376         return NULL;
1377 }
1378
1379 static gboolean
1380 ev_view_expose_event (GtkWidget      *widget,
1381                       GdkEventExpose *event)
1382 {
1383         EvView *view = EV_VIEW (widget);
1384         int i;
1385
1386         if (view->document == NULL)
1387                 return FALSE;
1388
1389         for (i = view->start_page; i <= view->end_page; i++) {
1390                 GdkRectangle page_area;
1391                 GtkBorder border;
1392
1393                 if (!get_page_extents (view, i, &page_area, &border))
1394                         continue;
1395
1396                 page_area.x -= view->scroll_x;
1397                 page_area.y -= view->scroll_y;
1398
1399                 draw_one_page (view, i, &page_area, &border, &(event->area));
1400
1401                 if (EV_IS_DOCUMENT_FIND (view->document))
1402                         highlight_find_results (view, i);
1403         }
1404
1405         return FALSE;
1406 }
1407
1408 static gboolean
1409 ev_view_button_press_event (GtkWidget      *widget,
1410                             GdkEventButton *event)
1411 {
1412         EvView *view = EV_VIEW (widget);
1413
1414         if (!GTK_WIDGET_HAS_FOCUS (widget)) {
1415                 gtk_widget_grab_focus (widget);
1416         }
1417
1418         view->pressed_button = event->button;
1419
1420         switch (event->button) {
1421                 case 1:
1422                         if (view->selection_info.selections) {
1423                                 clear_selection (view);
1424                                 gtk_widget_queue_draw (widget);
1425                         }
1426
1427                         view->selection_info.start.x = event->x + view->scroll_x;
1428                         view->selection_info.start.y = event->y + view->scroll_y;
1429                         return TRUE;
1430                 case 2:
1431                         /* use root coordinates as reference point because
1432                          * scrolling changes window relative coordinates */
1433                         view->drag_info.start.x = event->x_root;
1434                         view->drag_info.start.y = event->y_root;
1435                         view->drag_info.hadj = gtk_adjustment_get_value (view->hadjustment);
1436                         view->drag_info.vadj = gtk_adjustment_get_value (view->vadjustment);
1437
1438                         ev_view_set_cursor (view, EV_VIEW_CURSOR_DRAG);
1439
1440                         return TRUE;
1441         }
1442
1443         return FALSE;
1444 }
1445
1446
1447 static gboolean
1448 selection_update_idle_cb (EvView *view)
1449 {
1450         GdkPoint point;
1451         point.x = view->motion_x;
1452         point.y = view->motion_y;
1453         compute_selections (view, &view->selection_info.start, &point);
1454
1455         view->selection_update_id = 0;
1456         return FALSE;
1457 }
1458
1459 static gboolean
1460 ev_view_motion_notify_event (GtkWidget      *widget,
1461                              GdkEventMotion *event)
1462 {
1463         EvView *view = EV_VIEW (widget);
1464
1465         if (!view->document)
1466                 return FALSE;
1467
1468         if (view->pressed_button == 1) {
1469                 view->selection_info.in_selection = TRUE;
1470                 view->motion_x = event->x + view->scroll_x;
1471                 view->motion_y = event->y + view->scroll_y;
1472
1473                 /* Queue an idle to handle the motion.  We do this because
1474                  * handling any selection events in the motion could be slower
1475                  * than new motion events reach us.  We always put it in the
1476                  * idle to make sure we catch up and don't visibly lag the
1477                  * mouse. */
1478                 if (! view->selection_update_id)
1479                         view->selection_update_id = g_idle_add ((GSourceFunc)selection_update_idle_cb, view);
1480
1481                 return TRUE;
1482         } else if (view->pressed_button == 2) {
1483                 if (!view->drag_info.in_drag) {
1484                         gboolean start;
1485
1486                         start = gtk_drag_check_threshold (widget,
1487                                                           view->drag_info.start.x,
1488                                                           view->drag_info.start.y,
1489                                                           event->x_root,
1490                                                           event->y_root);
1491                         view->drag_info.in_drag = start;
1492                 }
1493
1494                 if (view->drag_info.in_drag) {
1495                         int dx, dy;
1496                         gdouble dhadj_value, dvadj_value;
1497
1498                         dx = event->x_root - view->drag_info.start.x;
1499                         dy = event->y_root - view->drag_info.start.y;
1500
1501                         dhadj_value = view->hadjustment->page_size *
1502                                       (gdouble)dx / widget->allocation.width;
1503                         dvadj_value = view->vadjustment->page_size *
1504                                       (gdouble)dy / widget->allocation.height;
1505
1506                         /* clamp scrolling to visible area */
1507                         gtk_adjustment_set_value (view->hadjustment,
1508                                                   MIN(view->drag_info.hadj - dhadj_value,
1509                                                       view->hadjustment->upper -
1510                                                       view->hadjustment->page_size));
1511                         gtk_adjustment_set_value (view->vadjustment,
1512                                                   MIN(view->drag_info.vadj - dvadj_value,
1513                                                       view->vadjustment->upper -
1514                                                       view->vadjustment->page_size));
1515
1516                         return TRUE;
1517                 }
1518         } else if (view->pressed_button <= 0) {
1519                 EvLink *link;
1520
1521                 link = get_link_at_location (view, event->x + view->scroll_x, event->y + view->scroll_y);
1522                 if (link) {
1523                         char *msg;
1524
1525                         msg = status_message_from_link (view, link);
1526                         ev_view_set_status (view, msg);
1527                         ev_view_set_cursor (view, EV_VIEW_CURSOR_LINK);
1528                         g_free (msg);
1529                 } else if (location_in_text (view, event->x + view->scroll_x, event->y + view->scroll_y)) {
1530                         ev_view_set_cursor (view, EV_VIEW_CURSOR_IBEAM);
1531                 } else {
1532                         ev_view_set_status (view, NULL);
1533                         if (view->cursor == EV_VIEW_CURSOR_LINK ||
1534                             view->cursor == EV_VIEW_CURSOR_IBEAM)
1535                                 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
1536                 }
1537                 return TRUE;
1538         }
1539
1540         return FALSE;
1541 }
1542
1543 static gboolean
1544 ev_view_button_release_event (GtkWidget      *widget,
1545                               GdkEventButton *event)
1546 {
1547         EvView *view = EV_VIEW (widget);
1548
1549         if (view->pressed_button == 2) {
1550                 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
1551         }
1552
1553         view->pressed_button = -1;
1554         view->drag_info.in_drag = FALSE;
1555
1556         if (view->selection_info.selections) {
1557                 ev_view_update_primary_selection (view);
1558         } else if (view->document) {
1559                 EvLink *link;
1560
1561                 link = get_link_at_location (view, event->x + view->scroll_x, event->y + view->scroll_y);
1562                 if (link) {
1563                         go_to_link (view, link);
1564                 }
1565         }
1566
1567         return FALSE;
1568 }
1569
1570 static gint
1571 ev_view_focus_in (GtkWidget     *widget,
1572                   GdkEventFocus *event)
1573 {
1574         if (EV_VIEW (widget)->pixbuf_cache)
1575                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
1576         gtk_widget_queue_draw (widget);
1577
1578         return FALSE;
1579 }
1580
1581 static gint
1582 ev_view_focus_out (GtkWidget     *widget,
1583                      GdkEventFocus *event)
1584 {
1585         if (EV_VIEW (widget)->pixbuf_cache)
1586                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
1587         gtk_widget_queue_draw (widget);
1588
1589         return FALSE;
1590 }
1591
1592 static gboolean
1593 ev_view_leave_notify_event (GtkWidget *widget, GdkEventCrossing   *event)
1594 {
1595         EvView *view = EV_VIEW (widget);
1596
1597         ev_view_set_status (view, NULL);
1598
1599         if (view->cursor == EV_VIEW_CURSOR_LINK ||
1600             view->cursor == EV_VIEW_CURSOR_IBEAM)
1601                 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
1602
1603         return FALSE;
1604 }
1605
1606 static void
1607 ev_view_style_set (GtkWidget *widget,
1608                    GtkStyle  *old_style)
1609 {
1610         if (EV_VIEW (widget)->pixbuf_cache)
1611                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
1612
1613         GTK_WIDGET_CLASS (ev_view_parent_class)->style_set (widget, old_style);
1614 }
1615
1616
1617 /*** Drawing ***/
1618
1619 static guint32
1620 ev_gdk_color_to_rgb (const GdkColor *color)
1621 {
1622   guint32 result;
1623   result = (0xff0000 | (color->red & 0xff00));
1624   result <<= 8;
1625   result |= ((color->green & 0xff00) | (color->blue >> 8));
1626   return result;
1627 }
1628
1629 static void
1630 draw_rubberband (GtkWidget *widget, GdkWindow *window,
1631                  const GdkRectangle *rect, guchar alpha)
1632 {
1633         GdkGC *gc;
1634         GdkPixbuf *pixbuf;
1635         GdkColor *fill_color_gdk;
1636         guint fill_color;
1637
1638         fill_color_gdk = gdk_color_copy (&GTK_WIDGET (widget)->style->base[GTK_STATE_SELECTED]);
1639         fill_color = ev_gdk_color_to_rgb (fill_color_gdk) << 8 | alpha;
1640
1641         pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE, 8,
1642                                  rect->width, rect->height);
1643         gdk_pixbuf_fill (pixbuf, fill_color);
1644
1645         gdk_draw_pixbuf (window, NULL, pixbuf,
1646                          0, 0,
1647                          rect->x - EV_VIEW (widget)->scroll_x, rect->y - EV_VIEW (widget)->scroll_y,
1648                          rect->width, rect->height,
1649                          GDK_RGB_DITHER_NONE,
1650                          0, 0);
1651
1652         g_object_unref (pixbuf);
1653
1654         gc = gdk_gc_new (window);
1655         gdk_gc_set_rgb_fg_color (gc, fill_color_gdk);
1656         gdk_draw_rectangle (window, gc, FALSE,
1657                             rect->x - EV_VIEW (widget)->scroll_x, rect->y - EV_VIEW (widget)->scroll_y,
1658                             rect->width - 1,
1659                             rect->height - 1);
1660         g_object_unref (gc);
1661
1662         gdk_color_free (fill_color_gdk);
1663 }
1664
1665
1666 static void
1667 highlight_find_results (EvView *view, int page)
1668 {
1669         EvDocumentFind *find;
1670         int i, results = 0;
1671
1672         g_return_if_fail (EV_IS_DOCUMENT_FIND (view->document));
1673
1674         find = EV_DOCUMENT_FIND (view->document);
1675
1676         results = ev_document_find_get_n_results (find, page);
1677
1678         for (i = 0; i < results; i++) {
1679                 EvRectangle rectangle;
1680                 GdkRectangle view_rectangle;
1681                 guchar alpha;
1682
1683                 if (i == view->find_result && page == view->find_page) {
1684                         alpha = 0x90;
1685                 } else {
1686                         alpha = 0x20;
1687                 }
1688
1689                 ev_document_find_get_result (find, page,
1690                                              i, &rectangle);
1691                 doc_rect_to_view_rect (view, page, &rectangle, &view_rectangle);
1692                 draw_rubberband (GTK_WIDGET (view), GTK_WIDGET(view)->window,
1693                                  &view_rectangle, alpha);
1694         }
1695 }
1696
1697 static void
1698 draw_one_page (EvView          *view,
1699                gint             page,
1700                GdkRectangle    *page_area,
1701                GtkBorder       *border,
1702                GdkRectangle    *expose_area)
1703 {
1704         gint width, height;
1705         GdkPixbuf *current_pixbuf;
1706         GdkRectangle overlap;
1707         GdkRectangle real_page_area;
1708         EvViewSelection *selection;
1709
1710         g_assert (view->document);
1711         if (! gdk_rectangle_intersect (page_area, expose_area, &overlap))
1712                 return;
1713
1714         selection = find_selection_for_page (view, page);
1715         ev_page_cache_get_size (view->page_cache,
1716                                 page, view->rotation,
1717                                 view->scale,
1718                                 &width, &height);
1719         /* Render the document itself */
1720         real_page_area = *page_area;
1721
1722         real_page_area.x += border->left;
1723         real_page_area.y += border->top;
1724         real_page_area.width -= (border->left + border->right);
1725         real_page_area.height -= (border->top + border->bottom);
1726
1727         ev_document_misc_paint_one_page (GTK_WIDGET(view)->window,
1728                                          GTK_WIDGET (view),
1729                                          page_area, border);
1730
1731         if (gdk_rectangle_intersect (&real_page_area, expose_area, &overlap)) {
1732                 GdkPixbuf *selection_pixbuf = NULL;
1733                 GdkPixbuf *scaled_image;
1734                 GdkPixbuf *scaled_selection;
1735
1736                 current_pixbuf = ev_pixbuf_cache_get_pixbuf (view->pixbuf_cache, page);
1737
1738                 /* Get the selection pixbuf iff we have something to draw */
1739                 if (current_pixbuf && view->selection_mode == EV_VIEW_SELECTION_TEXT && selection)
1740                         selection_pixbuf = ev_pixbuf_cache_get_selection_pixbuf (view->pixbuf_cache,
1741                                                                                  page,
1742                                                                                  view->scale,
1743                                                                                  NULL);
1744
1745                 if (current_pixbuf == NULL)
1746                         scaled_image = NULL;
1747                 else if (width == gdk_pixbuf_get_width (current_pixbuf) &&
1748                          height == gdk_pixbuf_get_height (current_pixbuf))
1749                         scaled_image = g_object_ref (current_pixbuf);
1750                 else
1751                         /* FIXME: We don't want to scale the whole area, just the right
1752                          * area of it */
1753                         scaled_image = gdk_pixbuf_scale_simple (current_pixbuf,
1754                                                                 width, height,
1755                                                                 GDK_INTERP_NEAREST);
1756
1757                 if (selection_pixbuf == NULL)
1758                         scaled_selection = NULL;
1759                 else if (width == gdk_pixbuf_get_width (selection_pixbuf) &&
1760                          height == gdk_pixbuf_get_height (selection_pixbuf))
1761                         scaled_selection = g_object_ref (selection_pixbuf);
1762                 else
1763                         /* FIXME: We don't want to scale the whole area, just the right
1764                          * area of it */
1765                         scaled_selection = gdk_pixbuf_scale_simple (selection_pixbuf,
1766                                                                     width, height,
1767                                                                     GDK_INTERP_NEAREST);
1768
1769                 if (scaled_image) {
1770                         gdk_draw_pixbuf (GTK_WIDGET(view)->window,
1771                                          GTK_WIDGET (view)->style->fg_gc[GTK_STATE_NORMAL],
1772                                          scaled_image,
1773                                          overlap.x - real_page_area.x,
1774                                          overlap.y - real_page_area.y,
1775                                          overlap.x, overlap.y,
1776                                          overlap.width, overlap.height,
1777                                          GDK_RGB_DITHER_NORMAL,
1778                                          0, 0);
1779                         g_object_unref (scaled_image);
1780                 }
1781
1782                 if (scaled_selection) {
1783                         gdk_draw_pixbuf (GTK_WIDGET(view)->window,
1784                                          GTK_WIDGET (view)->style->fg_gc[GTK_STATE_NORMAL],
1785                                          scaled_selection,
1786                                          overlap.x - real_page_area.x,
1787                                          overlap.y - real_page_area.y,
1788                                          overlap.x, overlap.y,
1789                                          overlap.width, overlap.height,
1790                                          GDK_RGB_DITHER_NORMAL,
1791                                          0, 0);
1792                         g_object_unref (scaled_selection);
1793                 }
1794         }
1795 }
1796
1797 /*** GObject functions ***/
1798
1799 static void
1800 ev_view_finalize (GObject *object)
1801 {
1802         EvView *view = EV_VIEW (object);
1803
1804         LOG ("Finalize");
1805
1806         g_free (view->status);
1807         g_free (view->find_status);
1808
1809         clear_selection (view);
1810
1811         G_OBJECT_CLASS (ev_view_parent_class)->finalize (object);
1812 }
1813
1814 static void
1815 ev_view_destroy (GtkObject *object)
1816 {
1817         EvView *view = EV_VIEW (object);
1818
1819         if (view->document) {
1820                 g_object_unref (view->document);
1821                 view->document = NULL;
1822         }
1823         if (view->pixbuf_cache) {
1824                 g_object_unref (view->pixbuf_cache);
1825                 view->pixbuf_cache = NULL;
1826         }
1827         ev_view_set_scroll_adjustments (view, NULL, NULL);
1828
1829         GTK_OBJECT_CLASS (ev_view_parent_class)->destroy (object);
1830 }
1831
1832 static void
1833 ev_view_set_property (GObject      *object,
1834                       guint         prop_id,
1835                       const GValue *value,
1836                       GParamSpec   *pspec)
1837 {
1838         EvView *view = EV_VIEW (object);
1839
1840         switch (prop_id)
1841         {
1842         case PROP_CONTINUOUS:
1843                 ev_view_set_continuous (view, g_value_get_boolean (value));
1844                 break;
1845         case PROP_DUAL_PAGE:
1846                 ev_view_set_dual_page (view, g_value_get_boolean (value));
1847                 break;
1848         case PROP_FULLSCREEN:
1849                 ev_view_set_fullscreen (view, g_value_get_boolean (value));
1850                 break;
1851         case PROP_PRESENTATION:
1852                 ev_view_set_presentation (view, g_value_get_boolean (value));
1853                 break;
1854         case PROP_SIZING_MODE:
1855                 ev_view_set_sizing_mode (view, g_value_get_enum (value));
1856                 break;
1857         case PROP_ZOOM:
1858                 ev_view_set_zoom (view, g_value_get_double (value), FALSE);
1859                 break;
1860         default:
1861                 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1862         }
1863 }
1864
1865 static void
1866 ev_view_get_property (GObject *object,
1867                       guint prop_id,
1868                       GValue *value,
1869                       GParamSpec *pspec)
1870 {
1871         EvView *view = EV_VIEW (object);
1872
1873         switch (prop_id)
1874         {
1875         case PROP_STATUS:
1876                 g_value_set_string (value, view->status);
1877                 break;
1878         case PROP_FIND_STATUS:
1879                 g_value_set_string (value, view->status);
1880                 break;
1881         case PROP_CONTINUOUS:
1882                 g_value_set_boolean (value, view->continuous);
1883                 break;
1884         case PROP_DUAL_PAGE:
1885                 g_value_set_boolean (value, view->dual_page);
1886                 break;
1887         case PROP_FULLSCREEN:
1888                 g_value_set_boolean (value, view->fullscreen);
1889                 break;
1890         case PROP_PRESENTATION:
1891                 g_value_set_boolean (value, view->presentation);
1892                 break;
1893         case PROP_SIZING_MODE:
1894                 g_value_set_enum (value, view->sizing_mode);
1895                 break;
1896         case PROP_ZOOM:
1897                 g_value_set_double (value, view->scale);
1898                 break;
1899         default:
1900                 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1901         }
1902 }
1903
1904 static void
1905 ev_view_class_init (EvViewClass *class)
1906 {
1907         GObjectClass *object_class = G_OBJECT_CLASS (class);
1908         GtkObjectClass *gtk_object_class = GTK_OBJECT_CLASS (class);
1909         GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
1910         GtkBindingSet *binding_set;
1911
1912         object_class->finalize = ev_view_finalize;
1913         object_class->set_property = ev_view_set_property;
1914         object_class->get_property = ev_view_get_property;
1915
1916         widget_class->expose_event = ev_view_expose_event;
1917         widget_class->button_press_event = ev_view_button_press_event;
1918         widget_class->motion_notify_event = ev_view_motion_notify_event;
1919         widget_class->button_release_event = ev_view_button_release_event;
1920         widget_class->focus_in_event = ev_view_focus_in;
1921         widget_class->focus_out_event = ev_view_focus_out;
1922         widget_class->size_request = ev_view_size_request;
1923         widget_class->size_allocate = ev_view_size_allocate;
1924         widget_class->realize = ev_view_realize;
1925         widget_class->unrealize = ev_view_unrealize;
1926         widget_class->scroll_event = ev_view_scroll_event;
1927         widget_class->leave_notify_event = ev_view_leave_notify_event;
1928         widget_class->style_set = ev_view_style_set;
1929         gtk_object_class->destroy = ev_view_destroy;
1930
1931         class->set_scroll_adjustments = ev_view_set_scroll_adjustments;
1932         class->binding_activated = ev_view_binding_activated;
1933
1934         widget_class->set_scroll_adjustments_signal =
1935             g_signal_new ("set-scroll-adjustments",
1936                           G_OBJECT_CLASS_TYPE (object_class),
1937                           G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1938                           G_STRUCT_OFFSET (EvViewClass, set_scroll_adjustments),
1939                           NULL, NULL,
1940                           ev_marshal_VOID__OBJECT_OBJECT,
1941                           G_TYPE_NONE, 2,
1942                           GTK_TYPE_ADJUSTMENT,
1943                           GTK_TYPE_ADJUSTMENT);
1944
1945         signals[SIGNAL_BINDING_ACTIVATED] = g_signal_new ("binding_activated",
1946                          G_TYPE_FROM_CLASS (object_class),
1947                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1948                          G_STRUCT_OFFSET (EvViewClass, binding_activated),
1949                          NULL, NULL,
1950                          ev_marshal_VOID__ENUM_BOOLEAN,
1951                          G_TYPE_NONE, 2,
1952                          GTK_TYPE_SCROLL_TYPE,
1953                          G_TYPE_BOOLEAN);
1954
1955         signals[SIGNAL_ZOOM_INVALID] = g_signal_new ("zoom-invalid",
1956                          G_TYPE_FROM_CLASS (object_class),
1957                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1958                          G_STRUCT_OFFSET (EvViewClass, zoom_invalid),
1959                          NULL, NULL,
1960                          ev_marshal_VOID__VOID,
1961                          G_TYPE_NONE, 0, G_TYPE_NONE);
1962
1963         g_object_class_install_property (object_class,
1964                                          PROP_STATUS,
1965                                          g_param_spec_string ("status",
1966                                                               "Status Message",
1967                                                               "The status message",
1968                                                               NULL,
1969                                                               G_PARAM_READABLE));
1970
1971         g_object_class_install_property (object_class,
1972                                          PROP_FIND_STATUS,
1973                                          g_param_spec_string ("find-status",
1974                                                               "Find Status Message",
1975                                                               "The find status message",
1976                                                               NULL,
1977                                                               G_PARAM_READABLE));
1978
1979         g_object_class_install_property (object_class,
1980                                          PROP_CONTINUOUS,
1981                                          g_param_spec_boolean ("continuous",
1982                                                                "Continuous",
1983                                                                "Continuous scrolling mode",
1984                                                                TRUE,
1985                                                                G_PARAM_READWRITE));
1986
1987         g_object_class_install_property (object_class,
1988                                          PROP_DUAL_PAGE,
1989                                          g_param_spec_boolean ("dual-page",
1990                                                                "Dual Page",
1991                                                                "Two pages visible at once",
1992                                                                FALSE,
1993                                                                G_PARAM_READWRITE));
1994         g_object_class_install_property (object_class,
1995                                          PROP_FULLSCREEN,
1996                                          g_param_spec_boolean ("fullscreen",
1997                                                                "Full Screen",
1998                                                                "Draw page in a fullscreen fashion",
1999                                                                FALSE,
2000                                                                G_PARAM_READWRITE));
2001         g_object_class_install_property (object_class,
2002                                          PROP_PRESENTATION,
2003                                          g_param_spec_boolean ("presentation",
2004                                                                "Presentation",
2005                                                                "Draw page in presentation mode",
2006                                                                TRUE,
2007                                                                G_PARAM_READWRITE));
2008
2009         g_object_class_install_property (object_class,
2010                                          PROP_SIZING_MODE,
2011                                          g_param_spec_enum ("sizing-mode",
2012                                                             "Sizing Mode",
2013                                                             "Sizing Mode",
2014                                                             EV_TYPE_SIZING_MODE,
2015                                                             EV_SIZING_FIT_WIDTH,
2016                                                             G_PARAM_READWRITE));
2017
2018         g_object_class_install_property (object_class,
2019                                          PROP_ZOOM,
2020                                          g_param_spec_double ("zoom",
2021                                                               "Zoom factor",
2022                                                                "Zoom factor",
2023                                                                MIN_SCALE,
2024                                                                MAX_SCALE,
2025                                                                1.0,
2026                                                                G_PARAM_READWRITE));
2027
2028         binding_set = gtk_binding_set_by_class (class);
2029
2030         add_scroll_binding_keypad (binding_set, GDK_Left,  GTK_SCROLL_STEP_BACKWARD, TRUE);
2031         add_scroll_binding_keypad (binding_set, GDK_Right, GTK_SCROLL_STEP_FORWARD,  TRUE);
2032         add_scroll_binding_keypad (binding_set, GDK_Up,    GTK_SCROLL_STEP_BACKWARD, FALSE);
2033         add_scroll_binding_keypad (binding_set, GDK_Down,  GTK_SCROLL_STEP_FORWARD,  FALSE);
2034 }
2035
2036 static void
2037 ev_view_init (EvView *view)
2038 {
2039         GTK_WIDGET_SET_FLAGS (view, GTK_CAN_FOCUS);
2040
2041         view->spacing = 5;
2042         view->scale = 1.0;
2043         view->current_page = 0;
2044         view->pressed_button = -1;
2045         view->cursor = EV_VIEW_CURSOR_NORMAL;
2046         view->drag_info.in_drag = FALSE;
2047         view->selection_info.in_selection = FALSE;
2048
2049         view->selection_mode = EV_VIEW_SELECTION_TEXT;
2050         view->continuous = TRUE;
2051         view->dual_page = FALSE;
2052         view->presentation = FALSE;
2053         view->fullscreen = FALSE;
2054         view->sizing_mode = EV_SIZING_FIT_WIDTH;
2055         view->pending_scroll = SCROLL_TO_KEEP_POSITION;
2056 }
2057
2058 /*** Callbacks ***/
2059
2060 static void
2061 find_changed_cb (EvDocument *document, int page, EvView *view)
2062 {
2063         jump_to_find_page (view, EV_VIEW_FIND_NEXT);
2064         jump_to_find_result (view);
2065         update_find_status_message (view);
2066
2067         if (view->current_page == page)
2068                 gtk_widget_queue_draw (GTK_WIDGET (view));
2069 }
2070
2071 static void
2072 job_finished_cb (EvPixbufCache *pixbuf_cache,
2073                  EvView        *view)
2074 {
2075         gtk_widget_queue_draw (GTK_WIDGET (view));
2076 }
2077
2078 static void
2079 page_changed_cb (EvPageCache *page_cache,
2080                  int          new_page,
2081                  EvView      *view)
2082 {
2083         if (view->current_page != new_page) {
2084
2085                 view->current_page = new_page;
2086                 view->pending_scroll = SCROLL_TO_CURRENT_PAGE;
2087                 gtk_widget_queue_resize (GTK_WIDGET (view));
2088
2089                 if (EV_IS_DOCUMENT_FIND (view->document)) {
2090                         view->find_page = new_page;
2091                         view->find_result = 0;
2092                         update_find_status_message (view);
2093                 }
2094         }
2095 }
2096
2097 static void on_adjustment_value_changed (GtkAdjustment  *adjustment,
2098                                          EvView *view)
2099 {
2100         int dx = 0, dy = 0;
2101
2102         if (! GTK_WIDGET_REALIZED (view))
2103                 return;
2104
2105         if (view->hadjustment) {
2106                 dx = view->scroll_x - (int) view->hadjustment->value;
2107                 view->scroll_x = (int) view->hadjustment->value;
2108         } else {
2109                 view->scroll_x = 0;
2110         }
2111
2112         if (view->vadjustment) {
2113                 dy = view->scroll_y - (int) view->vadjustment->value;
2114                 view->scroll_y = (int) view->vadjustment->value;
2115         } else {
2116                 view->scroll_y = 0;
2117         }
2118
2119
2120         if (view->pending_resize)
2121                 gtk_widget_queue_draw (GTK_WIDGET (view));
2122         else
2123                 gdk_window_scroll (GTK_WIDGET (view)->window, dx, dy);
2124
2125
2126         if (view->document)
2127                 view_update_range_and_current_page (view);
2128 }
2129
2130 GtkWidget*
2131 ev_view_new (void)
2132 {
2133         GtkWidget *view;
2134
2135         view = g_object_new (EV_TYPE_VIEW, NULL);
2136
2137         return view;
2138 }
2139
2140 static void
2141 setup_caches (EvView *view)
2142 {
2143         view->page_cache = ev_page_cache_get (view->document);
2144         g_signal_connect (view->page_cache, "page-changed", G_CALLBACK (page_changed_cb), view);
2145         view->pixbuf_cache = ev_pixbuf_cache_new (GTK_WIDGET (view), view->document);
2146         g_signal_connect (view->pixbuf_cache, "job-finished", G_CALLBACK (job_finished_cb), view);
2147 }
2148
2149 static void
2150 clear_caches (EvView *view)
2151 {
2152         if (view->pixbuf_cache) {
2153                 g_object_unref (view->pixbuf_cache);
2154                 view->pixbuf_cache = NULL;
2155         }
2156
2157         if (view->page_cache) {
2158                 g_object_unref (view->page_cache);
2159                 view->page_cache = NULL;
2160         }
2161 }
2162
2163 void
2164 ev_view_set_document (EvView     *view,
2165                       EvDocument *document)
2166 {
2167         g_return_if_fail (EV_IS_VIEW (view));
2168
2169         if (document != view->document) {
2170                 clear_caches (view);
2171
2172                 if (view->document) {
2173                         g_signal_handlers_disconnect_by_func (view->document,
2174                                                               find_changed_cb,
2175                                                               view);
2176                         g_object_unref (view->document);
2177                         view->page_cache = NULL;
2178
2179                 }
2180
2181                 view->document = document;
2182                 view->find_page = 0;
2183                 view->find_result = 0;
2184
2185                 if (view->document) {
2186                         g_object_ref (view->document);
2187                         if (EV_IS_DOCUMENT_FIND (view->document)) {
2188                                 g_signal_connect (view->document,
2189                                                   "find_changed",
2190                                                   G_CALLBACK (find_changed_cb),
2191                                                   view);
2192                         }
2193
2194                         setup_caches (view);
2195                 }
2196
2197                 gtk_widget_queue_resize (GTK_WIDGET (view));
2198         }
2199 }
2200
2201 /*** Zoom and sizing mode ***/
2202
2203 #define EPSILON 0.0000001
2204 void
2205 ev_view_set_zoom (EvView   *view,
2206                   double    factor,
2207                   gboolean  relative)
2208 {
2209         double scale;
2210
2211         if (relative)
2212                 scale = view->scale * factor;
2213         else
2214                 scale = factor;
2215
2216         scale = CLAMP (scale, MIN_SCALE, MAX_SCALE);
2217
2218         if (ABS (view->scale - scale) < EPSILON)
2219                 return;
2220
2221         view->scale = scale;
2222         view->pending_resize = TRUE;
2223
2224         gtk_widget_queue_resize (GTK_WIDGET (view));
2225
2226         g_object_notify (G_OBJECT (view), "zoom");
2227 }
2228
2229 double
2230 ev_view_get_zoom (EvView *view)
2231 {
2232         return view->scale;
2233 }
2234
2235 gboolean
2236 ev_view_get_continuous (EvView *view)
2237 {
2238         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
2239
2240         return view->continuous;
2241 }
2242
2243 void
2244 ev_view_set_continuous (EvView   *view,
2245                         gboolean  continuous)
2246 {
2247         g_return_if_fail (EV_IS_VIEW (view));
2248
2249         continuous = continuous != FALSE;
2250
2251         if (view->continuous != continuous) {
2252                 view->continuous = continuous;
2253                 view->pending_scroll = SCROLL_TO_CURRENT_PAGE;
2254                 gtk_widget_queue_resize (GTK_WIDGET (view));
2255         }
2256
2257         g_object_notify (G_OBJECT (view), "continuous");
2258 }
2259
2260 gboolean
2261 ev_view_get_dual_page (EvView *view)
2262 {
2263         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
2264
2265         return view->dual_page;
2266 }
2267
2268 void
2269 ev_view_set_dual_page (EvView   *view,
2270                        gboolean  dual_page)
2271 {
2272         g_return_if_fail (EV_IS_VIEW (view));
2273
2274         dual_page = dual_page != FALSE;
2275
2276         if (view->dual_page == dual_page)
2277                 return;
2278
2279         view->pending_scroll = SCROLL_TO_CURRENT_PAGE;
2280         view->dual_page = dual_page;
2281         /* FIXME: if we're keeping the pixbuf cache around, we should extend the
2282          * preload_cache_size to be 2 if dual_page is set.
2283          */
2284         gtk_widget_queue_resize (GTK_WIDGET (view));
2285
2286         g_object_notify (G_OBJECT (view), "dual-page");
2287 }
2288
2289 void
2290 ev_view_set_fullscreen (EvView   *view,
2291                          gboolean  fullscreen)
2292 {
2293         g_return_if_fail (EV_IS_VIEW (view));
2294
2295         fullscreen = fullscreen != FALSE;
2296
2297         if (view->fullscreen == fullscreen)
2298                 return;
2299
2300         view->fullscreen = fullscreen;
2301         gtk_widget_queue_resize (GTK_WIDGET (view));
2302
2303         g_object_notify (G_OBJECT (view), "fullscreen");
2304 }
2305
2306 gboolean
2307 ev_view_get_fullscreen (EvView *view)
2308 {
2309         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
2310
2311         return view->fullscreen;
2312 }
2313
2314 void
2315 ev_view_set_presentation (EvView   *view,
2316                           gboolean  presentation)
2317 {
2318         g_return_if_fail (EV_IS_VIEW (view));
2319
2320         presentation = presentation != FALSE;
2321
2322         if (view->presentation == presentation)
2323                 return;
2324
2325         view->presentation = presentation;
2326         view->pending_scroll = SCROLL_TO_CURRENT_PAGE;
2327         gtk_widget_queue_resize (GTK_WIDGET (view));
2328
2329         if (GTK_WIDGET_REALIZED (view)) {
2330                 if (view->presentation)
2331                         gdk_window_set_background (GTK_WIDGET(view)->window,
2332                                                    &GTK_WIDGET (view)->style->black);
2333                 else
2334                         gdk_window_set_background (GTK_WIDGET(view)->window,
2335                                                    &GTK_WIDGET (view)->style->mid [GTK_STATE_NORMAL]);
2336         }
2337
2338
2339         g_object_notify (G_OBJECT (view), "presentation");
2340 }
2341
2342 gboolean
2343 ev_view_get_presentation (EvView *view)
2344 {
2345         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
2346
2347         return view->presentation;
2348 }
2349
2350 void
2351 ev_view_set_sizing_mode (EvView       *view,
2352                          EvSizingMode  sizing_mode)
2353 {
2354         g_return_if_fail (EV_IS_VIEW (view));
2355
2356         if (view->sizing_mode == sizing_mode)
2357                 return;
2358
2359         view->sizing_mode = sizing_mode;
2360         gtk_widget_queue_resize (GTK_WIDGET (view));
2361
2362         g_object_notify (G_OBJECT (view), "sizing-mode");
2363 }
2364
2365 EvSizingMode
2366 ev_view_get_sizing_mode (EvView *view)
2367 {
2368         g_return_val_if_fail (EV_IS_VIEW (view), EV_SIZING_FREE);
2369
2370         return view->sizing_mode;
2371 }
2372
2373 gboolean
2374 ev_view_can_zoom_in (EvView *view)
2375 {
2376         return view->scale * ZOOM_IN_FACTOR <= MAX_SCALE;
2377 }
2378
2379 gboolean
2380 ev_view_can_zoom_out (EvView *view)
2381 {
2382         return view->scale * ZOOM_OUT_FACTOR >= MIN_SCALE;
2383 }
2384
2385 void
2386 ev_view_zoom_in (EvView *view)
2387 {
2388         g_return_if_fail (view->sizing_mode == EV_SIZING_FREE);
2389
2390         view->pending_scroll = SCROLL_TO_CENTER;
2391         ev_view_set_zoom (view, ZOOM_IN_FACTOR, TRUE);
2392 }
2393
2394 void
2395 ev_view_zoom_out (EvView *view)
2396 {
2397         g_return_if_fail (view->sizing_mode == EV_SIZING_FREE);
2398
2399         view->pending_scroll = SCROLL_TO_CENTER;
2400         ev_view_set_zoom (view, ZOOM_OUT_FACTOR, TRUE);
2401 }
2402
2403 void
2404 ev_view_rotate_right (EvView *view)
2405 {
2406         int rotation = view->rotation + 90;
2407
2408         if (rotation >= 360) {
2409                 rotation -= 360;
2410         }
2411
2412         ev_view_set_rotation (view, rotation);
2413 }
2414
2415 void
2416 ev_view_rotate_left (EvView *view)
2417 {
2418         int rotation = view->rotation - 90;
2419
2420         if (rotation < 0) {
2421                 rotation += 360;
2422         }
2423
2424         ev_view_set_rotation (view, rotation);
2425 }
2426
2427 void
2428 ev_view_set_rotation (EvView *view, int rotation)
2429 {
2430         view->rotation = rotation;
2431
2432         if (view->pixbuf_cache) {
2433                 ev_pixbuf_cache_clear (view->pixbuf_cache);
2434                 gtk_widget_queue_resize (GTK_WIDGET (view));
2435         }
2436 }
2437
2438 int
2439 ev_view_get_rotation (EvView *view)
2440 {
2441         return view->rotation;
2442 }
2443
2444 static double
2445 zoom_for_size_fit_width (int doc_width,
2446                          int doc_height,
2447                          int target_width,
2448                          int target_height,
2449                          int vsb_width)
2450 {
2451         double scale;
2452
2453         scale = (double)target_width / doc_width;
2454
2455         if (doc_height * scale > target_height)
2456                 scale = (double) (target_width - vsb_width) / doc_width;
2457
2458         return scale;
2459 }
2460
2461 static double
2462 zoom_for_size_best_fit (int doc_width,
2463                         int doc_height,
2464                         int target_width,
2465                         int target_height,
2466                         int vsb_width,
2467                         int hsb_width)
2468 {
2469         double w_scale;
2470         double h_scale;
2471
2472         w_scale = (double)target_width / doc_width;
2473         h_scale = (double)target_height / doc_height;
2474
2475         if (doc_height * w_scale > target_height)
2476                 w_scale = (double) (target_width - vsb_width) / doc_width;
2477         if (doc_width * h_scale > target_width)
2478                 h_scale = (double) (target_height - hsb_width) / doc_height;
2479
2480         return MIN (w_scale, h_scale);
2481 }
2482
2483
2484 static void
2485 ev_view_zoom_for_size_presentation (EvView *view,
2486                                     int     width,
2487                                     int     height)
2488 {
2489         int doc_width, doc_height;
2490         gdouble scale;
2491
2492         ev_page_cache_get_size (view->page_cache,
2493                                 view->current_page,
2494                                 view->rotation,
2495                                 1.0,
2496                                 &doc_width,
2497                                 &doc_height);
2498         scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, 0, 0);
2499         ev_view_set_zoom (view, scale, FALSE);
2500 }
2501
2502 static void
2503 ev_view_zoom_for_size_continuous_and_dual_page (EvView *view,
2504                            int     width,
2505                            int     height,
2506                            int     vsb_width,
2507                            int     hsb_height)
2508 {
2509         int doc_width, doc_height;
2510         GtkBorder border;
2511         gdouble scale;
2512
2513         ev_page_cache_get_max_width (view->page_cache,
2514                                      view->rotation,
2515                                      1.0,
2516                                      &doc_width);
2517         ev_page_cache_get_max_height (view->page_cache,
2518                                       view->rotation,
2519                                       1.0,
2520                                       &doc_height);
2521         compute_border (view, doc_width, doc_height, &border);
2522
2523         doc_width = doc_width * 2;
2524         width -= (2 * (border.left + border.right) + 3 * view->spacing);
2525         height -= (border.top + border.bottom + 2 * view->spacing - 1);
2526
2527         /* FIXME: We really need to calculate the overall height here, not the
2528          * page height.  We assume there's always a vertical scrollbar for
2529          * now.  We need to fix this. */
2530         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
2531                 scale = zoom_for_size_fit_width (doc_width, doc_height, width - vsb_width, height, 0);
2532         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
2533                 scale = zoom_for_size_best_fit (doc_width, doc_height, width - vsb_width, height, 0, hsb_height);
2534         else
2535                 g_assert_not_reached ();
2536
2537         ev_view_set_zoom (view, scale, FALSE);
2538 }
2539
2540 static void
2541 ev_view_zoom_for_size_continuous (EvView *view,
2542                                   int     width,
2543                                   int     height,
2544                                   int     vsb_width,
2545                                   int     hsb_height)
2546 {
2547         int doc_width, doc_height;
2548         GtkBorder border;
2549         gdouble scale;
2550
2551         ev_page_cache_get_max_width (view->page_cache,
2552                                      view->rotation,
2553                                      1.0,
2554                                      &doc_width);
2555         ev_page_cache_get_max_height (view->page_cache,
2556                                       view->rotation,
2557                                       1.0,
2558                                       &doc_height);
2559         compute_border (view, doc_width, doc_height, &border);
2560
2561         width -= (border.left + border.right + 2 * view->spacing);
2562         height -= (border.top + border.bottom + 2 * view->spacing - 1);
2563
2564         /* FIXME: We really need to calculate the overall height here, not the
2565          * page height.  We assume there's always a vertical scrollbar for
2566          * now.  We need to fix this. */
2567         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
2568                 scale = zoom_for_size_fit_width (doc_width, doc_height, width - vsb_width, height, 0);
2569         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
2570                 scale = zoom_for_size_best_fit (doc_width, doc_height, width - vsb_width, height, 0, hsb_height);
2571         else
2572                 g_assert_not_reached ();
2573
2574         ev_view_set_zoom (view, scale, FALSE);
2575 }
2576
2577 static void
2578 ev_view_zoom_for_size_dual_page (EvView *view,
2579                                  int     width,
2580                                  int     height,
2581                                  int     vsb_width,
2582                                  int     hsb_height)
2583 {
2584         GtkBorder border;
2585         gint doc_width, doc_height;
2586         gdouble scale;
2587         gint other_page;
2588
2589         other_page = view->current_page ^ 1;
2590
2591         /* Find the largest of the two. */
2592         ev_page_cache_get_size (view->page_cache,
2593                                 view->current_page,
2594                                 view->rotation,
2595                                 1.0,
2596                                 &doc_width, &doc_height);
2597
2598         if (other_page < ev_page_cache_get_n_pages (view->page_cache)) {
2599                 gint width_2, height_2;
2600                 ev_page_cache_get_size (view->page_cache,
2601                                         other_page,
2602                                         view->rotation,
2603                                         1.0,
2604                                         &width_2, &height_2);
2605                 if (width_2 > doc_width)
2606                         doc_width = width_2;
2607                 if (height_2 > doc_height)
2608                         doc_height = height_2;
2609         }
2610         compute_border (view, doc_width, doc_height, &border);
2611
2612         doc_width = doc_width * 2;
2613         width -= ((border.left + border.right)* 2 + 3 * view->spacing);
2614         height -= (border.top + border.bottom + 2 * view->spacing);
2615
2616         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
2617                 scale = zoom_for_size_fit_width (doc_width, doc_height, width, height, vsb_width);
2618         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
2619                 scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, vsb_width, hsb_height);
2620         else
2621                 g_assert_not_reached ();
2622
2623         ev_view_set_zoom (view, scale, FALSE);
2624 }
2625
2626 static void
2627 ev_view_zoom_for_size_single_page (EvView *view,
2628                                    int     width,
2629                                    int     height,
2630                                    int     vsb_width,
2631                                    int     hsb_height)
2632 {
2633         int doc_width, doc_height;
2634         GtkBorder border;
2635         gdouble scale;
2636
2637         ev_page_cache_get_size (view->page_cache,
2638                                 view->current_page,
2639                                 view->rotation,
2640                                 1.0,
2641                                 &doc_width,
2642                                 &doc_height);
2643         /* Get an approximate border */
2644         compute_border (view, width, height, &border);
2645
2646         width -= (border.left + border.right + 2 * view->spacing);
2647         height -= (border.top + border.bottom + 2 * view->spacing);
2648
2649         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
2650                 scale = zoom_for_size_fit_width (doc_width, doc_height, width, height, vsb_width);
2651         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
2652                 scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, vsb_width, hsb_height);
2653         else
2654                 g_assert_not_reached ();
2655
2656         ev_view_set_zoom (view, scale, FALSE);
2657 }
2658
2659 void
2660 ev_view_set_zoom_for_size (EvView *view,
2661                            int     width,
2662                            int     height,
2663                            int     vsb_width,
2664                            int     hsb_height)
2665 {
2666         g_return_if_fail (view->sizing_mode == EV_SIZING_FIT_WIDTH ||
2667                           view->sizing_mode == EV_SIZING_BEST_FIT);
2668         g_return_if_fail (width >= 0);
2669         g_return_if_fail (height >= 0);
2670
2671         if (view->document == NULL)
2672                 return;
2673
2674         if (view->presentation)
2675                 ev_view_zoom_for_size_presentation (view, width, height);
2676         else if (view->continuous && view->dual_page)
2677                 ev_view_zoom_for_size_continuous_and_dual_page (view, width, height, vsb_width, hsb_height);
2678         else if (view->continuous)
2679                 ev_view_zoom_for_size_continuous (view, width, height, vsb_width, hsb_height);
2680         else if (view->dual_page)
2681                 ev_view_zoom_for_size_dual_page (view, width, height, vsb_width, hsb_height);
2682         else
2683                 ev_view_zoom_for_size_single_page (view, width, height, vsb_width, hsb_height);
2684 }
2685
2686 /*** Status text messages ***/
2687
2688 const char *
2689 ev_view_get_status (EvView *view)
2690 {
2691         g_return_val_if_fail (EV_IS_VIEW (view), NULL);
2692
2693         return view->status;
2694 }
2695
2696 static void
2697 ev_view_set_status (EvView *view, const char *message)
2698 {
2699         g_return_if_fail (EV_IS_VIEW (view));
2700
2701         if (message != view->status) {
2702                 g_free (view->status);
2703                 view->status = g_strdup (message);
2704                 g_object_notify (G_OBJECT (view), "status");
2705         }
2706 }
2707
2708 static void
2709 update_find_status_message (EvView *view)
2710 {
2711         char *message;
2712
2713         if (view->current_page == view->find_page) {
2714                 int results;
2715
2716                 results = ev_document_find_get_n_results
2717                                 (EV_DOCUMENT_FIND (view->document),
2718                                  view->current_page);
2719                 /* TRANS: Sometimes this could be better translated as
2720                    "%d hit(s) on this page".  Therefore this string
2721                    contains plural cases. */
2722                 message = g_strdup_printf (ngettext ("%d found on this page",
2723                                                      "%d found on this page",
2724                                                      results),
2725                                            results);
2726         } else {
2727                 double percent;
2728
2729                 percent = ev_document_find_get_progress
2730                                 (EV_DOCUMENT_FIND (view->document));
2731                 if (percent >= (1.0 - 1e-10)) {
2732                         message = g_strdup (_("Not found"));
2733                 } else {
2734                         message = g_strdup_printf (_("%3d%% remaining to search"),
2735                                                    (int) ((1.0 - percent) * 100));
2736                 }
2737
2738         }
2739         ev_view_set_find_status (view, message);
2740         g_free (message);
2741 }
2742
2743 const char *
2744 ev_view_get_find_status (EvView *view)
2745 {
2746         g_return_val_if_fail (EV_IS_VIEW (view), NULL);
2747
2748         return view->find_status;
2749 }
2750
2751 static void
2752 ev_view_set_find_status (EvView *view, const char *message)
2753 {
2754         g_return_if_fail (EV_IS_VIEW (view));
2755
2756         g_free (view->find_status);
2757         view->find_status = g_strdup (message);
2758         g_object_notify (G_OBJECT (view), "find-status");
2759 }
2760
2761 /*** Find ***/
2762
2763 static void
2764 jump_to_find_result (EvView *view)
2765 {
2766         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
2767         EvRectangle rect;
2768         GdkRectangle view_rect;
2769         int n_results;
2770         int page = view->find_page;
2771
2772         n_results = ev_document_find_get_n_results (find, page);
2773
2774         if (n_results > 0  && view->find_result < n_results) {
2775                 ev_document_find_get_result
2776                         (find, page, view->find_result, &rect);
2777
2778                 doc_rect_to_view_rect (view, page, &rect, &view_rect);
2779                 ensure_rectangle_is_visible (view, &view_rect);
2780         }
2781 }
2782
2783 static void
2784 jump_to_find_page (EvView *view, EvViewFindDirection direction)
2785 {
2786         int n_pages, i;
2787
2788         n_pages = ev_page_cache_get_n_pages (view->page_cache);
2789
2790         for (i = 0; i < n_pages; i++) {
2791                 int has_results;
2792                 int page;
2793
2794                 if (direction == EV_VIEW_FIND_NEXT)
2795                         page = view->find_page + i;
2796                 else
2797                         page = view->find_page - i;
2798
2799
2800                 if (page >= n_pages) {
2801                         page = page - n_pages;
2802                 }
2803                 if (page < 0)
2804                         page = page + n_pages;
2805
2806                 has_results = ev_document_find_page_has_results
2807                                 (EV_DOCUMENT_FIND (view->document), page);
2808                 if (has_results == -1) {
2809                         view->find_page = page;
2810                         break;
2811                 } else if (has_results == 1) {
2812                         ev_page_cache_set_current_page (view->page_cache, page);
2813                         break;
2814                 }
2815         }
2816 }
2817
2818 gboolean
2819 ev_view_can_find_next (EvView *view)
2820 {
2821         int n_results = 0;
2822
2823         if (EV_IS_DOCUMENT_FIND (view->document)) {
2824                 EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
2825
2826                 n_results = ev_document_find_get_n_results (find, view->current_page);
2827         }
2828
2829         return n_results > 0;
2830 }
2831
2832 void
2833 ev_view_find_next (EvView *view)
2834 {
2835         int n_results, n_pages;
2836         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
2837
2838         n_results = ev_document_find_get_n_results (find, view->current_page);
2839
2840         n_pages = ev_page_cache_get_n_pages (view->page_cache);
2841
2842         view->find_result++;
2843
2844         if (view->find_result >= n_results) {
2845
2846                 view->find_result = 0;
2847                 view->find_page++;
2848                 if (view->find_page >= n_pages) {
2849                         view->find_page = 0;
2850                 }
2851
2852                 jump_to_find_page (view, EV_VIEW_FIND_NEXT);
2853                 jump_to_find_result (view);
2854         } else {
2855                 jump_to_find_result (view);
2856                 gtk_widget_queue_draw (GTK_WIDGET (view));
2857         }
2858 }
2859
2860 void
2861 ev_view_find_previous (EvView *view)
2862 {
2863         int n_results, n_pages;
2864         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
2865         EvPageCache *page_cache;
2866
2867         page_cache = ev_page_cache_get (view->document);
2868
2869         n_results = ev_document_find_get_n_results (find, view->current_page);
2870
2871         n_pages = ev_page_cache_get_n_pages (page_cache);
2872
2873         view->find_result--;
2874
2875         if (view->find_result < 0) {
2876
2877                 view->find_page--;
2878                 if (view->find_page < 0) {
2879                         view->find_page = n_pages - 1;
2880                 }
2881
2882                 jump_to_find_page (view, EV_VIEW_FIND_PREV);
2883                 view->find_result = ev_document_find_get_n_results (find, view->current_page) - 1;
2884                 jump_to_find_result (view);
2885         } else {
2886                 jump_to_find_result (view);
2887                 gtk_widget_queue_draw (GTK_WIDGET (view));
2888         }
2889 }
2890
2891 /*** Selections ***/
2892
2893 /* compute_new_selection_rect/text calculates the area currently selected by
2894  * view_rect.  each handles a different mode;
2895  */
2896 static GList *
2897 compute_new_selection_rect (EvView       *view,
2898                             GdkPoint     *start,
2899                             GdkPoint     *stop)
2900 {
2901         GdkRectangle view_rect;
2902         int n_pages, i;
2903         GList *list = NULL;
2904
2905         g_assert (view->selection_mode == EV_VIEW_SELECTION_RECTANGLE);
2906
2907         view_rect.x = MIN (start->x, stop->x);
2908         view_rect.y = MIN (start->y, stop->y);
2909         view_rect.width = MAX (start->x, stop->x) - view_rect.x;
2910         view_rect.width = MAX (start->y, stop->y) - view_rect.y;
2911
2912         n_pages = ev_page_cache_get_n_pages (view->page_cache);
2913
2914         for (i = 0; i < n_pages; i++) {
2915                 GdkRectangle page_area;
2916                 GtkBorder border;
2917
2918                 if (get_page_extents (view, i, &page_area, &border)) {
2919                         GdkRectangle overlap;
2920
2921                         if (gdk_rectangle_intersect (&page_area, &view_rect, &overlap)) {
2922                                 EvViewSelection *selection;
2923
2924                                 selection = g_new0 (EvViewSelection, 1);
2925                                 selection->page = i;
2926                                 view_rect_to_doc_rect (view, &overlap, &page_area,
2927                                                        &(selection->rect));
2928
2929                                 list = g_list_append (list, selection);
2930                         }
2931                 }
2932         }
2933
2934         return list;
2935 }
2936
2937 static gboolean
2938 gdk_rectangle_point_in (GdkRectangle *rectangle,
2939                         GdkPoint     *point)
2940 {
2941         return rectangle->x <= point->x &&
2942                 rectangle->y <= point->y &&
2943                 point->x < rectangle->x + rectangle->width &&
2944                 point->y < rectangle->y + rectangle->height;
2945 }
2946
2947 static GList *
2948 compute_new_selection_text (EvView   *view,
2949                             GdkPoint *start,
2950                             GdkPoint *stop)
2951 {
2952         int n_pages, i, first, last;
2953         GList *list = NULL;
2954         EvViewSelection *selection;
2955         gint width, height;
2956         int start_page, end_page;
2957
2958         g_assert (view->selection_mode == EV_VIEW_SELECTION_TEXT);
2959
2960         n_pages = ev_page_cache_get_n_pages (view->page_cache);
2961
2962         /* First figure out the range of pages the selection
2963          * affects. */
2964         first = n_pages;
2965         last = 0;
2966         if (view->continuous) {
2967                 start_page = 0;
2968                 end_page = n_pages;
2969         } else if (view->dual_page) {
2970                 start_page = view->start_page;
2971                 end_page = view->end_page + 1;
2972         } else {
2973                 start_page = view->current_page;
2974                 end_page = view->current_page + 1;
2975         }
2976
2977         for (i = start_page; i < end_page; i++) {
2978                 GdkRectangle page_area;
2979                 GtkBorder border;
2980
2981                 get_page_extents (view, i, &page_area, &border);
2982                 if (gdk_rectangle_point_in (&page_area, start) ||
2983                     gdk_rectangle_point_in (&page_area, stop)) {
2984                         if (first == n_pages)
2985                                 first = i;
2986                         last = i;
2987                 }
2988
2989         }
2990
2991
2992
2993         /* Now create a list of EvViewSelection's for the affected
2994          * pages.  This could be an empty list, a list of just one
2995          * page or a number of pages.*/
2996         for (i = first; i < last + 1; i++) {
2997                 GdkRectangle page_area;
2998                 GtkBorder border;
2999                 GdkPoint *point;
3000
3001                 ev_page_cache_get_size (view->page_cache, i,
3002                                         view->rotation,
3003                                         1.0, &width, &height);
3004
3005                 selection = g_new0 (EvViewSelection, 1);
3006                 selection->page = i;
3007                 selection->rect.x1 = selection->rect.y1 = 0;
3008                 selection->rect.x2 = width;
3009                 selection->rect.y2 = height;
3010
3011                 get_page_extents (view, i, &page_area, &border);
3012
3013                 if (gdk_rectangle_point_in (&page_area, start))
3014                         point = start;
3015                 else
3016                         point = stop;
3017
3018                 if (i == first)
3019                         view_point_to_doc_point (view, point, &page_area,
3020                                                  &selection->rect.x1,
3021                                                  &selection->rect.y1);
3022
3023                 /* If the selection is contained within just one page,
3024                  * make sure we don't write 'start' into both points
3025                  * in selection->rect. */
3026                 if (first == last)
3027                         point = stop;
3028
3029                 if (i == last)
3030                         view_point_to_doc_point (view, point, &page_area,
3031                                                  &selection->rect.x2,
3032                                                  &selection->rect.y2);
3033
3034                 list = g_list_append (list, selection);
3035         }
3036
3037         return list;
3038 }
3039
3040 /* This function takes the newly calculated list, and figures out which regions
3041  * have changed.  It then queues a redraw approporiately.
3042  */
3043 static void
3044 merge_selection_region (EvView *view,
3045                         GList  *new_list)
3046 {
3047         GList *old_list;
3048         GList *new_list_ptr, *old_list_ptr;
3049
3050         /* Update the selection */
3051         old_list = ev_pixbuf_cache_get_selection_list (view->pixbuf_cache);
3052         g_list_foreach (view->selection_info.selections, (GFunc)selection_free, NULL);
3053         view->selection_info.selections = new_list;
3054         ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, new_list);
3055
3056         new_list_ptr = new_list;
3057         old_list_ptr = old_list;
3058
3059         while (new_list_ptr || old_list_ptr) {
3060                 EvViewSelection *old_sel, *new_sel;
3061                 int cur_page;
3062                 GdkRegion *region = NULL;
3063
3064                 new_sel = (new_list_ptr) ? (new_list_ptr->data) : NULL;
3065                 old_sel = (old_list_ptr) ? (old_list_ptr->data) : NULL;
3066
3067                 /* Assume that the lists are in order, and we run through them
3068                  * comparing them, one page at a time.  We come out with the
3069                  * first page we see. */
3070                 if (new_sel && old_sel) {
3071                         if (new_sel->page < old_sel->page) {
3072                                 new_list_ptr = new_list_ptr->next;
3073                                 old_sel = NULL;
3074                         } else if (new_sel->page > old_sel->page) {
3075                                 old_list_ptr = old_list_ptr->next;
3076                                 new_sel = NULL;
3077                         } else {
3078                                 new_list_ptr = new_list_ptr->next;
3079                                 old_list_ptr = old_list_ptr->next;
3080                         }
3081                 } else if (new_sel) {
3082                         new_list_ptr = new_list_ptr->next;
3083                 } else if (old_sel) {
3084                         old_list_ptr = old_list_ptr->next;
3085                 }
3086
3087                 g_assert (new_sel || old_sel);
3088
3089                 /* is the page we're looking at on the screen?*/
3090                 cur_page = new_sel ? new_sel->page : old_sel->page;
3091                 if (cur_page < view->start_page || cur_page > view->end_page)
3092                         continue;
3093
3094                 /* seed the cache with a new page.  We are going to need the new
3095                  * region too. */
3096                 if (new_sel) {
3097                         GdkRegion *tmp_region = NULL;
3098                         ev_pixbuf_cache_get_selection_pixbuf (view->pixbuf_cache,
3099                                                               cur_page,
3100                                                               view->scale,
3101                                                               &tmp_region);
3102                         if (tmp_region) {
3103                                 new_sel->covered_region = gdk_region_copy (tmp_region);
3104                         }
3105                 }
3106
3107                 /* Now we figure out what needs redrawing */
3108                 if (old_sel && new_sel) {
3109                         if (old_sel->covered_region &&
3110                             new_sel->covered_region) {
3111                                 /* We only want to redraw the areas that have
3112                                  * changed, so we xor the old and new regions
3113                                  * and redraw if it's different */
3114                                 region = gdk_region_copy (old_sel->covered_region);
3115                                 gdk_region_xor (region, new_sel->covered_region);
3116                                 if (gdk_region_empty (region)) {
3117                                         gdk_region_destroy (region);
3118                                         region = NULL;
3119                                 }
3120                         } else if (old_sel->covered_region) {
3121                                 region = gdk_region_copy (old_sel->covered_region);
3122                         } else if (new_sel->covered_region) {
3123                                 region = gdk_region_copy (new_sel->covered_region);
3124                         }
3125                 } else if (old_sel && !new_sel) {
3126                         if (old_sel->covered_region && !gdk_region_empty (old_sel->covered_region)) {
3127                                 region = gdk_region_copy (old_sel->covered_region);
3128                         }
3129                 } else if (!old_sel && new_sel) {
3130                         if (new_sel->covered_region && !gdk_region_empty (new_sel->covered_region)) {
3131                                 region = gdk_region_copy (new_sel->covered_region);
3132                         }
3133                 } else {
3134                         g_assert_not_reached ();
3135                 }
3136
3137                 /* Redraw the damaged region! */
3138                 if (region) {
3139                         GdkRectangle page_area;
3140                         GtkBorder border;
3141
3142                         get_page_extents (view, cur_page, &page_area, &border);
3143                         gdk_region_offset (region,
3144                                            page_area.x + border.left - view->scroll_x,
3145                                            page_area.y + border.top - view->scroll_y);
3146                         gdk_window_invalidate_region (GTK_WIDGET (view)->window, region, TRUE);
3147                         gdk_region_destroy (region);
3148                 }
3149         }
3150
3151         /* Free the old list, now that we're done with it. */
3152         g_list_foreach (old_list, (GFunc) selection_free, NULL);
3153 }
3154
3155 static void
3156 compute_selections (EvView   *view,
3157                     GdkPoint *start,
3158                     GdkPoint *stop)
3159 {
3160         GList *list;
3161
3162         if (view->selection_mode == EV_VIEW_SELECTION_RECTANGLE)
3163                 list = compute_new_selection_rect (view, start, stop);
3164         else
3165                 list = compute_new_selection_text (view, start, stop);
3166         merge_selection_region (view, list);
3167 }
3168
3169 /* Free's the selection.  It's up to the caller to queue redraws if needed.
3170  */
3171 static void
3172 selection_free (EvViewSelection *selection)
3173 {
3174         if (selection->covered_region)
3175                 gdk_region_destroy (selection->covered_region);
3176         g_free (selection);
3177 }
3178
3179 static void
3180 clear_selection (EvView *view)
3181 {
3182         g_list_foreach (view->selection_info.selections, (GFunc)selection_free, NULL);
3183         view->selection_info.selections = NULL;
3184         view->selection_info.in_selection = FALSE;
3185 }
3186
3187
3188 void
3189 ev_view_select_all (EvView *view)
3190 {
3191         int n_pages, i;
3192
3193         clear_selection (view);
3194
3195         n_pages = ev_page_cache_get_n_pages (view->page_cache);
3196         for (i = 0; i < n_pages; i++) {
3197                 int width, height;
3198                 EvViewSelection *selection;
3199
3200                 ev_page_cache_get_size (view->page_cache,
3201                                         i,
3202                                         view->rotation,
3203                                         1.0, &width, &height);
3204
3205                 selection = g_new0 (EvViewSelection, 1);
3206                 selection->page = i;
3207                 selection->rect.x1 = selection->rect.y1 = 0;
3208                 selection->rect.x2 = width;
3209                 selection->rect.y2 = height;
3210
3211                 view->selection_info.selections = g_list_append (view->selection_info.selections, selection);
3212         }
3213
3214         ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, view->selection_info.selections);
3215         gtk_widget_queue_draw (GTK_WIDGET (view));
3216 }
3217
3218 static char *
3219 get_selected_text (EvView *ev_view)
3220 {
3221         GString *text;
3222         GList *l;
3223
3224         text = g_string_new (NULL);
3225
3226         ev_document_doc_mutex_lock ();
3227
3228         for (l = ev_view->selection_info.selections; l != NULL; l = l->next) {
3229                 EvViewSelection *selection = (EvViewSelection *)l->data;
3230                 char *tmp;
3231
3232                 tmp = ev_document_get_text (ev_view->document,
3233                                             selection->page,
3234                                             &selection->rect);
3235                 g_string_append (text, tmp);
3236                 g_free (tmp);
3237         }
3238
3239         ev_document_doc_mutex_unlock ();
3240
3241         return g_string_free (text, FALSE);
3242 }
3243
3244 void
3245 ev_view_copy (EvView *ev_view)
3246 {
3247         GtkClipboard *clipboard;
3248         char *text;
3249
3250         if (!ev_document_can_get_text (ev_view->document)) {
3251                 return;
3252         }
3253
3254         text = get_selected_text (ev_view);
3255         clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view),
3256                                               GDK_SELECTION_CLIPBOARD);
3257         gtk_clipboard_set_text (clipboard, text, -1);
3258         g_free (text);
3259 }
3260
3261 static void
3262 ev_view_primary_get_cb (GtkClipboard     *clipboard,
3263                         GtkSelectionData *selection_data,
3264                         guint             info,
3265                         gpointer          data)
3266 {
3267         EvView *ev_view = EV_VIEW (data);
3268         char *text;
3269
3270         if (!ev_document_can_get_text (ev_view->document)) {
3271                 return;
3272         }
3273
3274         text = get_selected_text (ev_view);
3275         gtk_selection_data_set_text (selection_data, text, -1);
3276         g_free (text);
3277 }
3278
3279 static void
3280 ev_view_primary_clear_cb (GtkClipboard *clipboard,
3281                           gpointer      data)
3282 {
3283         EvView *view = EV_VIEW (data);
3284
3285         clear_selection (view);
3286 }
3287
3288 static void
3289 ev_view_update_primary_selection (EvView *ev_view)
3290 {
3291         GtkClipboard *clipboard;
3292
3293         clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view),
3294                                               GDK_SELECTION_PRIMARY);
3295
3296         if (ev_view->selection_info.selections) {
3297                 if (!gtk_clipboard_set_with_owner (clipboard,
3298                                                    targets,
3299                                                    G_N_ELEMENTS (targets),
3300                                                    ev_view_primary_get_cb,
3301                                                    ev_view_primary_clear_cb,
3302                                                    G_OBJECT (ev_view)))
3303                         ev_view_primary_clear_cb (clipboard, ev_view);
3304         } else {
3305                 if (gtk_clipboard_get_owner (clipboard) == G_OBJECT (ev_view))
3306                         gtk_clipboard_clear (clipboard);
3307         }
3308 }
3309
3310 /*** Cursor operations ***/
3311
3312 static GdkCursor *
3313 ev_view_create_invisible_cursor(void)
3314 {
3315        GdkBitmap *empty;
3316        GdkColor black = { 0, 0, 0, 0 };
3317        static char bits[] = { 0x00 };
3318
3319        empty = gdk_bitmap_create_from_data (NULL, bits, 1, 1);
3320
3321        return gdk_cursor_new_from_pixmap (empty, empty, &black, &black, 0, 0);
3322 }
3323
3324 static void
3325 ev_view_set_cursor (EvView *view, EvViewCursor new_cursor)
3326 {
3327         GdkCursor *cursor = NULL;
3328         GdkDisplay *display;
3329         GtkWidget *widget;
3330
3331         if (view->cursor == new_cursor) {
3332                 return;
3333         }
3334
3335         widget = gtk_widget_get_toplevel (GTK_WIDGET (view));
3336         display = gtk_widget_get_display (widget);
3337         view->cursor = new_cursor;
3338
3339         switch (new_cursor) {
3340                 case EV_VIEW_CURSOR_NORMAL:
3341                         gdk_window_set_cursor (widget->window, NULL);
3342                         break;
3343                 case EV_VIEW_CURSOR_IBEAM:
3344                         cursor = gdk_cursor_new_for_display (display, GDK_XTERM);
3345                         break;
3346                 case EV_VIEW_CURSOR_LINK:
3347                         cursor = gdk_cursor_new_for_display (display, GDK_HAND2);
3348                         break;
3349                 case EV_VIEW_CURSOR_WAIT:
3350                         cursor = gdk_cursor_new_for_display (display, GDK_WATCH);
3351                         break;
3352                 case EV_VIEW_CURSOR_HIDDEN:
3353                         cursor = ev_view_create_invisible_cursor ();
3354                         break;
3355                 case EV_VIEW_CURSOR_DRAG:
3356                         cursor = gdk_cursor_new_for_display (display, GDK_FLEUR);
3357                         break;
3358         }
3359
3360         if (cursor) {
3361                 gdk_window_set_cursor (widget->window, cursor);
3362                 gdk_cursor_unref (cursor);
3363                 gdk_flush();
3364         }
3365 }
3366
3367 void
3368 ev_view_hide_cursor (EvView *view)
3369 {
3370        ev_view_set_cursor (view, EV_VIEW_CURSOR_HIDDEN);
3371 }
3372
3373 void
3374 ev_view_show_cursor (EvView *view)
3375 {
3376        ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
3377 }
3378
3379 /*** Enum description for usage in signal ***/
3380
3381 GType
3382 ev_sizing_mode_get_type (void)
3383 {
3384   static GType etype = 0;
3385   if (etype == 0) {
3386     static const GEnumValue values[] = {
3387       { EV_SIZING_FIT_WIDTH, "EV_SIZING_FIT_WIDTH", "fit-width" },
3388       { EV_SIZING_BEST_FIT, "EV_SIZING_BEST_FIT", "best-fit" },
3389       { EV_SIZING_FREE, "EV_SIZING_FREE", "free" },
3390       { 0, NULL, NULL }
3391     };
3392     etype = g_enum_register_static ("EvSizingMode", values);
3393   }
3394   return etype;
3395 }
3396