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         PROP_ROTATION,
  57 };
  58
  59 enum {
  60         SIGNAL_BINDING_ACTIVATED,
  61         SIGNAL_ZOOM_INVALID,
  62         N_SIGNALS,
  63 };
  64
  65 enum {
  66         TARGET_STRING,
  67         TARGET_TEXT,
  68         TARGET_COMPOUND_TEXT,
  69         TARGET_UTF8_STRING,
  70         TARGET_TEXT_BUFFER_CONTENTS
  71 };
  72
  73 static const GtkTargetEntry targets[] = {
  74         { "STRING", 0, TARGET_STRING },
  75         { "TEXT",   0, TARGET_TEXT },
  76         { "COMPOUND_TEXT", 0, TARGET_COMPOUND_TEXT },
  77         { "UTF8_STRING", 0, TARGET_UTF8_STRING },
  78 };
  79
  80 static guint signals[N_SIGNALS];
  81
  82 typedef enum {
  83         EV_VIEW_CURSOR_NORMAL,
  84         EV_VIEW_CURSOR_IBEAM,
  85         EV_VIEW_CURSOR_LINK,
  86         EV_VIEW_CURSOR_WAIT,
  87         EV_VIEW_CURSOR_HIDDEN,
  88         EV_VIEW_CURSOR_DRAG
  89 } EvViewCursor;
  90
  91 typedef enum {
  92         EV_VIEW_FIND_NEXT,
  93         EV_VIEW_FIND_PREV
  94 } EvViewFindDirection;
  95
  96 #define ZOOM_IN_FACTOR  1.2
  97 #define ZOOM_OUT_FACTOR (1.0/ZOOM_IN_FACTOR)
  98
  99 #define MIN_SCALE 0.05409
 100 #define MAX_SCALE 4.0
 101
 102 /* Information for middle clicking and moving around the doc */
 103 typedef struct {
 104         gboolean in_drag;
 105         GdkPoint start;
 106         gdouble hadj;
 107         gdouble vadj;
 108 } DragInfo;
 109
 110 /* Information for handling selection */
 111 typedef struct {
 112         gboolean in_selection;
 113         GdkPoint start;
 114         GList *selections;
 115 } SelectionInfo;
 116
 117 typedef enum {
 118         SCROLL_TO_KEEP_POSITION,
 119         SCROLL_TO_CURRENT_PAGE,
 120         SCROLL_TO_CENTER
 121 } PendingScroll;
 122
 123 struct _EvView {
 124         GtkWidget parent_instance;
 125
 126         EvDocument *document;
 127
 128         char *status;
 129         char *find_status;
 130
 131         /* Scrolling */
 132         GtkAdjustment *hadjustment;
 133         GtkAdjustment *vadjustment;
 134
 135         gint scroll_x;
 136         gint scroll_y;
 137
 138         /* Information for middle clicking and dragging around. */
 139         DragInfo drag_info;
 140
 141         /* Selection */
 142         gint motion_x;
 143         gint motion_y;
 144         guint selection_update_id;
 145
 146         EvViewSelectionMode selection_mode;
 147         SelectionInfo selection_info;
 148
 149         int pressed_button;
 150         EvViewCursor cursor;
 151
 152         EvPageCache *page_cache;
 153         EvPixbufCache *pixbuf_cache;
 154
 155         gint start_page;
 156         gint end_page;
 157         gint current_page;
 158
 159         EvJobRender *current_job;
 160
 161         int find_page;
 162         int find_result;
 163         int spacing;
 164
 165         int rotation;
 166         double scale;
 167
 168         gboolean continuous;
 169         gboolean dual_page;
 170         gboolean fullscreen;
 171         gboolean presentation;
 172         EvSizingMode sizing_mode;
 173
 174         PendingScroll pending_scroll;
 175         gboolean pending_resize;
 176 };
 177
 178 struct _EvViewClass {
 179         GtkWidgetClass parent_class;
 180
 181         void    (*set_scroll_adjustments) (EvView         *view,
 182                                            GtkAdjustment  *hadjustment,
 183                                            GtkAdjustment  *vadjustment);
 184         void    (*binding_activated)      (EvView         *view,
 185                                            GtkScrollType   scroll,
 186                                            gboolean        horizontal);
 187         void    (*zoom_invalid)           (EvView         *view);
 188 };
 189
 190 /*** Scrolling ***/
 191 static void       scroll_to_current_page                     (EvView *view,
 192                                                               GtkOrientation orientation);
 193 static void       ev_view_set_scroll_adjustments             (EvView             *view,
 194                                                               GtkAdjustment      *hadjustment,
 195                                                               GtkAdjustment      *vadjustment);
 196 static void       view_update_range_and_current_page         (EvView             *view);
 197 static void       set_scroll_adjustment                      (EvView             *view,
 198                                                               GtkOrientation      orientation,
 199                                                               GtkAdjustment      *adjustment);
 200 static void       ev_view_set_scroll_adjustments             (EvView             *view,
 201                                                               GtkAdjustment      *hadjustment,
 202                                                               GtkAdjustment      *vadjustment);
 203 static void       add_scroll_binding_keypad                  (GtkBindingSet      *binding_set,
 204                                                               guint               keyval,
 205                                                               GtkScrollType       scroll,
 206                                                               gboolean            horizontal);
 207 static void       ev_view_binding_activated                  (EvView             *view,
 208                                                               GtkScrollType       scroll,
 209                                                               gboolean            horizontal);
 210 static void       ensure_rectangle_is_visible                (EvView             *view,
 211                                                               GdkRectangle       *rect);
 212
 213 /*** Geometry computations ***/
 214 static void       compute_border                             (EvView             *view,
 215                                                               int                 width,
 216                                                               int                 height,
 217                                                               GtkBorder          *border);
 218 static void       get_page_y_offset                          (EvView *view,
 219                                                               int page,
 220                                                               double zoom,
 221                                                               int *y_offset);
 222 static gboolean   get_page_extents                           (EvView             *view,
 223                                                               gint                page,
 224                                                               GdkRectangle       *page_area,
 225                                                               GtkBorder          *border);
 226 static void       view_rect_to_doc_rect                      (EvView             *view,
 227                                                               GdkRectangle       *view_rect,
 228                                                               GdkRectangle       *page_area,
 229                                                               EvRectangle        *doc_rect);
 230 static void       doc_rect_to_view_rect                      (EvView             *view,
 231                                                               int                 page,
 232                                                               EvRectangle        *doc_rect,
 233                                                               GdkRectangle       *view_rect);
 234 static void       find_page_at_location                      (EvView             *view,
 235                                                               gdouble             x,
 236                                                               gdouble             y,
 237                                                               gint               *page,
 238                                                               gint               *x_offset,
 239                                                               gint               *y_offset);
 240
 241 /*** Hyperrefs ***/
 242 static EvLink*    get_link_at_location                       (EvView             *view,
 243                                                               gdouble             x,
 244                                                               gdouble             y);
 245 static void       go_to_link                                 (EvView             *view,
 246                                                               EvLink             *link);
 247 static char*      status_message_from_link                   (EvView             *view,
 248                                                               EvLink             *link);
 249
 250 /*** GtkWidget implementation ***/
 251 static void       ev_view_size_request_continuous_dual_page  (EvView             *view,
 252                                                               GtkRequisition     *requisition);
 253 static void       ev_view_size_request_continuous            (EvView             *view,
 254                                                               GtkRequisition     *requisition);
 255 static void       ev_view_size_request_dual_page             (EvView             *view,
 256                                                               GtkRequisition     *requisition);
 257 static void       ev_view_size_request_single_page           (EvView             *view,
 258                                                               GtkRequisition     *requisition);
 259 static void       ev_view_size_request                       (GtkWidget          *widget,
 260                                                               GtkRequisition     *requisition);
 261 static void       ev_view_size_allocate                      (GtkWidget          *widget,
 262                                                               GtkAllocation      *allocation);
 263 static void       ev_view_realize                            (GtkWidget          *widget);
 264 static void       ev_view_unrealize                          (GtkWidget          *widget);
 265 static gboolean   ev_view_scroll_event                       (GtkWidget          *widget,
 266                                                               GdkEventScroll     *event);
 267 static gboolean   ev_view_expose_event                       (GtkWidget          *widget,
 268                                                               GdkEventExpose     *event);
 269 static gboolean   ev_view_button_press_event                 (GtkWidget          *widget,
 270                                                               GdkEventButton     *event);
 271 static gboolean   ev_view_motion_notify_event                (GtkWidget          *widget,
 272                                                               GdkEventMotion     *event);
 273 static gboolean   ev_view_button_release_event               (GtkWidget          *widget,
 274                                                               GdkEventButton     *event);
 275 static gboolean   ev_view_leave_notify_event                 (GtkWidget          *widget,
 276                                                               GdkEventCrossing   *event);
 277 static void       ev_view_style_set                          (GtkWidget          *widget,
 278                                                               GtkStyle           *old_style);
 279
 280 /*** Drawing ***/
 281 static guint32    ev_gdk_color_to_rgb                        (const GdkColor     *color);
 282 static void       draw_rubberband                            (GtkWidget          *widget,
 283                                                               GdkWindow          *window,
 284                                                               const GdkRectangle *rect,
 285                                                               guchar              alpha);
 286 static void       highlight_find_results                     (EvView             *view,
 287                                                               int                 page);
 288 static void       draw_one_page                              (EvView             *view,
 289                                                               gint                page,
 290                                                               GdkRectangle       *page_area,
 291                                                               GtkBorder          *border,
 292                                                               GdkRectangle       *expose_area);
 293
 294 /*** Callbacks ***/
 295 static void       find_changed_cb                            (EvDocument         *document,
 296                                                               int                 page,
 297                                                               EvView             *view);
 298 static void       job_finished_cb                            (EvPixbufCache      *pixbuf_cache,
 299                                                               EvView             *view);
 300 static void       page_changed_cb                            (EvPageCache        *page_cache,
 301                                                               int                 new_page,
 302                                                               EvView             *view);
 303 static void       on_adjustment_value_changed                (GtkAdjustment      *adjustment,
 304                                                               EvView             *view);
 305
 306 /*** GObject ***/
 307 static void       ev_view_finalize                           (GObject            *object);
 308 static void       ev_view_destroy                            (GtkObject          *object);
 309 static void       ev_view_set_property                       (GObject            *object,
 310                                                               guint               prop_id,
 311                                                               const GValue       *value,
 312                                                               GParamSpec         *pspec);
 313 static void       ev_view_get_property                       (GObject            *object,
 314                                                               guint               prop_id,
 315                                                               GValue             *value,
 316                                                               GParamSpec         *pspec);
 317 static void       ev_view_class_init                         (EvViewClass        *class);
 318 static void       ev_view_init                               (EvView             *view);
 319
 320 /*** Zoom and sizing ***/
 321 static double   zoom_for_size_fit_width                      (int doc_width,
 322                                                               int doc_height,
 323                                                               int target_width,
 324                                                               int target_height,
 325                                                               int vsb_width);
 326 static double   zoom_for_size_best_fit                       (int doc_width,
 327                                                               int doc_height,
 328                                                               int target_width,
 329                                                               int target_height,
 330                                                               int vsb_width,
 331                                                               int hsb_width);
 332 static void     ev_view_zoom_for_size_presentation           (EvView *view,
 333                                                               int     width,
 334                                                               int     height);
 335 static void     ev_view_zoom_for_size_continuous_and_dual_page (EvView *view,
 336                                                                 int     width,
 337                                                                 int     height,
 338                                                                 int     vsb_width,
 339                                                                 int     hsb_height);
 340 static void     ev_view_zoom_for_size_continuous               (EvView *view,
 341                                                                 int     width,
 342                                                                 int     height,
 343                                                                 int     vsb_width,
 344                                                                 int     hsb_height);
 345 static void     ev_view_zoom_for_size_dual_page                (EvView *view,
 346                                                                 int     width,
 347                                                                 int     height,
 348                                                                 int     vsb_width,
 349                                                                 int     hsb_height);
 350 static void     ev_view_zoom_for_size_single_page              (EvView *view,
 351                                                                 int     width,
 352                                                                 int     height,
 353                                                                 int     vsb_width,
 354                                                                 int     hsb_height);
 355 /*** Cursors ***/
 356 static GdkCursor* ev_view_create_invisible_cursor            (void);
 357 static void       ev_view_set_cursor                         (EvView             *view,
 358                                                               EvViewCursor        new_cursor);
 359
 360 /*** Status messages ***/
 361 static void       ev_view_set_status                         (EvView             *view,
 362                                                               const char         *message);
 363 static void       update_find_status_message                 (EvView             *view);
 364 static void       ev_view_set_find_status                    (EvView             *view,
 365                                                               const char         *message);
 366 /*** Find ***/
 367 static void       jump_to_find_result                        (EvView             *view);
 368 static void       jump_to_find_page                          (EvView             *view,
 369                                                               EvViewFindDirection direction);
 370
 371 /*** Selection ***/
 372 static void       compute_selections                         (EvView             *view,
 373                                                               GdkPoint           *start,
 374                                                               GdkPoint           *stop);
 375 static void       clear_selection                            (EvView             *view);
 376 static void       selection_free                             (EvViewSelection    *selection);
 377 static char*      get_selected_text                          (EvView             *ev_view);
 378 static void       ev_view_primary_get_cb                     (GtkClipboard       *clipboard,
 379                                                               GtkSelectionData   *selection_data,
 380                                                               guint               info,
 381                                                               gpointer            data);
 382 static void       ev_view_primary_clear_cb                   (GtkClipboard       *clipboard,
 383                                                               gpointer            data);
 384 static void       ev_view_update_primary_selection           (EvView             *ev_view);
 385
 386
 387 G_DEFINE_TYPE (EvView, ev_view, GTK_TYPE_WIDGET)
 388
 389 static void
 390 scroll_to_current_page (EvView *view, GtkOrientation orientation)
 391 {
 392         GdkRectangle page_area;
 393         GtkBorder border;
 394
 395         if (view->document == NULL) {
 396                 return;
 397         }
 398
 399         get_page_extents (view, view->current_page, &page_area, &border);
 400
 401         if (orientation == GTK_ORIENTATION_VERTICAL) {
 402                 if (view->continuous) {
 403                         gtk_adjustment_clamp_page (view->vadjustment,
 404                                                    page_area.y - view->spacing,
 405                                                    page_area.y + view->vadjustment->page_size);
 406                 } else {
 407                         gtk_adjustment_set_value (view->vadjustment,
 408                                                   view->vadjustment->lower);
 409                 }
 410         } else {
 411                 if (view->dual_page) {
 412                         gtk_adjustment_clamp_page (view->hadjustment,
 413                                                    page_area.x,
 414                                                    page_area.x + view->hadjustment->page_size);
 415                 } else {
 416                         gtk_adjustment_set_value (view->hadjustment,
 417                                                   CLAMP (view->hadjustment->value,
 418                                                   view->hadjustment->lower,
 419                                                   view->hadjustment->upper -
 420                                                   view->hadjustment->page_size));
 421                 }
 422         }
 423 }
 424
 425 static void
 426 view_set_adjustment_values (EvView         *view,
 427                             GtkOrientation  orientation)
 428 {
 429         GtkWidget *widget = GTK_WIDGET (view);
 430         GtkAdjustment *adjustment;
 431         int requisition;
 432         int allocation;
 433
 434         double factor;
 435         gint new_value;
 436
 437         if (orientation == GTK_ORIENTATION_HORIZONTAL)  {
 438                 requisition = widget->requisition.width;
 439                 allocation = widget->allocation.width;
 440                 adjustment = view->hadjustment;
 441         } else {
 442                 requisition = widget->requisition.height;
 443                 allocation = widget->allocation.height;
 444                 adjustment = view->vadjustment;
 445         }
 446
 447         if (!adjustment)
 448                 return;
 449
 450         factor = 1.0;
 451         switch (view->pending_scroll) {
 452                 case SCROLL_TO_KEEP_POSITION:
 453                         factor = (adjustment->value) / adjustment->upper;
 454                         break;
 455                 case SCROLL_TO_CURRENT_PAGE:
 456                         break;
 457                 case SCROLL_TO_CENTER:
 458                         factor = (adjustment->value + adjustment->page_size * 0.5) / adjustment->upper;
 459                         break;
 460         }
 461
 462         adjustment->page_size = allocation;
 463         adjustment->step_increment = allocation * 0.1;
 464         adjustment->page_increment = allocation * 0.9;
 465         adjustment->lower = 0;
 466         adjustment->upper = MAX (allocation, requisition);
 467
 468         /*
 469          * We add 0.5 to the values before to average out our rounding errors.
 470          */
 471         switch (view->pending_scroll) {
 472                 case SCROLL_TO_KEEP_POSITION:
 473                         new_value = CLAMP (adjustment->upper * factor + 0.5, 0, adjustment->upper - adjustment->page_size);
 474                         gtk_adjustment_set_value (adjustment, (int)new_value);
 475                         break;
 476                 case SCROLL_TO_CURRENT_PAGE:
 477                         scroll_to_current_page (view, orientation);
 478                         break;
 479                 case SCROLL_TO_CENTER:
 480                         new_value = CLAMP (adjustment->upper * factor - adjustment->page_size * 0.5 + 0.5,
 481                                            0, adjustment->upper - adjustment->page_size);
 482                         gtk_adjustment_set_value (adjustment, (int)new_value);
 483                         break;
 484         }
 485
 486         gtk_adjustment_changed (adjustment);
 487 }
 488
 489 static void
 490 view_update_range_and_current_page (EvView *view)
 491 {
 492         if (view->pending_scroll != SCROLL_TO_KEEP_POSITION)
 493                 return;
 494
 495         /* Presentation trumps all other modes */
 496         if (view->presentation) {
 497                 view->start_page = view->current_page;
 498                 view->end_page = view->current_page;
 499         } else if (view->continuous) {
 500                 GdkRectangle current_area, unused, page_area;
 501                 GtkBorder border;
 502                 gint current_page;
 503                 gboolean found = FALSE;
 504                 int i;
 505
 506                 if (!(view->vadjustment && view->hadjustment))
 507                         return;
 508
 509                 current_area.x = view->hadjustment->value;
 510                 current_area.width = view->hadjustment->upper;
 511                 current_area.y = view->vadjustment->value;
 512                 current_area.height = view->vadjustment->page_size;
 513
 514                 for (i = 0; i < ev_page_cache_get_n_pages (view->page_cache); i++) {
 515
 516                         get_page_extents (view, i, &page_area, &border);
 517
 518                         if (gdk_rectangle_intersect (&current_area, &page_area, &unused)) {
 519                                 if (! found) {
 520                                         view->start_page = i;
 521                                         found = TRUE;
 522
 523                                 }
 524                                 view->end_page = i;
 525                         } else if (found) {
 526                                 break;
 527                         }
 528                 }
 529
 530                 current_page = ev_page_cache_get_current_page (view->page_cache);
 531
 532                 if (current_page < view->start_page || current_page > view->end_page) {
 533                         view->current_page = view->start_page;
 534                         ev_page_cache_set_current_page (view->page_cache, view->start_page);
 535                 }
 536         } else {
 537                 if (view->dual_page) {
 538                         if (view->current_page % 2 == 0) {
 539                                 view->start_page = view->current_page;
 540                                 if (view->current_page + 1 < ev_page_cache_get_n_pages (view->page_cache))
 541                                         view->end_page = view->start_page + 1;
 542                         } else {
 543                                 view->start_page = view->current_page - 1;
 544                                 view->end_page = view->current_page;
 545                         }
 546                 } else {
 547                         view->start_page = view->current_page;
 548                         view->end_page = view->current_page;
 549                 }
 550         }
 551
 552         ev_pixbuf_cache_set_page_range (view->pixbuf_cache,
 553                                         view->start_page,
 554                                         view->end_page,
 555                                         view->rotation,
 556                                         view->scale,
 557                                         view->selection_info.selections);
 558 }
 559
 560 static void
 561 set_scroll_adjustment (EvView *view,
 562                        GtkOrientation  orientation,
 563                        GtkAdjustment  *adjustment)
 564 {
 565         GtkAdjustment **to_set;
 566
 567         if (orientation == GTK_ORIENTATION_HORIZONTAL)
 568                 to_set = &view->hadjustment;
 569         else
 570                 to_set = &view->vadjustment;
 571
 572         if (*to_set != adjustment) {
 573                 if (*to_set) {
 574                         g_signal_handlers_disconnect_by_func (*to_set,
 575                                                               (gpointer) on_adjustment_value_changed,
 576                                                               view);
 577                         g_object_unref (*to_set);
 578                 }
 579
 580                 *to_set = adjustment;
 581                 view_set_adjustment_values (view, orientation);
 582
 583                 if (*to_set) {
 584                         g_object_ref (*to_set);
 585                         g_signal_connect (*to_set, "value_changed",
 586                                           G_CALLBACK (on_adjustment_value_changed), view);
 587                 }
 588         }
 589 }
 590
 591 static void
 592 ev_view_set_scroll_adjustments (EvView *view,
 593                                 GtkAdjustment  *hadjustment,
 594                                 GtkAdjustment  *vadjustment)
 595 {
 596         set_scroll_adjustment (view, GTK_ORIENTATION_HORIZONTAL, hadjustment);
 597         set_scroll_adjustment (view, GTK_ORIENTATION_VERTICAL, vadjustment);
 598
 599         on_adjustment_value_changed (NULL, view);
 600 }
 601
 602 static void
 603 add_scroll_binding_keypad (GtkBindingSet  *binding_set,
 604                            guint           keyval,
 605                            GtkScrollType   scroll,
 606                            gboolean        horizontal)
 607 {
 608   guint keypad_keyval = keyval - GDK_Left + GDK_KP_Left;
 609
 610   gtk_binding_entry_add_signal (binding_set, keyval, 0,
 611                                 "binding_activated", 2,
 612                                 GTK_TYPE_SCROLL_TYPE, scroll,
 613                                 G_TYPE_BOOLEAN, horizontal);
 614   gtk_binding_entry_add_signal (binding_set, keypad_keyval, 0,
 615                                 "binding_activated", 2,
 616                                 GTK_TYPE_SCROLL_TYPE, scroll,
 617                                 G_TYPE_BOOLEAN, horizontal);
 618 }
 619
 620 void
 621 ev_view_scroll (EvView        *view,
 622                 EvScrollType   scroll)
 623 {
 624         GtkAdjustment *adjustment;
 625         double value, increment;
 626         gboolean first_page = FALSE;
 627         gboolean last_page = FALSE;
 628
 629         /* Assign values for increment and vertical adjustment */
 630         adjustment = view->vadjustment;
 631         increment = adjustment->page_size * 0.75;
 632         value = adjustment->value;
 633
 634         /* Assign boolean for first and last page */
 635         if (view->current_page == 0)
 636                 first_page = TRUE;
 637         if (view->current_page == ev_page_cache_get_n_pages (view->page_cache) - 1)
 638                 last_page = TRUE;
 639
 640         switch (scroll) {
 641                 case EV_SCROLL_PAGE_BACKWARD:
 642                         /* Do not jump backwards if at the first page */
 643                         if (value == (adjustment->lower) && first_page) {
 644                                 /* Do nothing */
 645                                 /* At the top of a page, assign the upper bound limit of previous page */
 646                         } else if (value == (adjustment->lower)) {
 647                                 value = adjustment->upper - adjustment->page_size;
 648                                 ev_page_cache_set_current_page (view->page_cache, view->current_page - 1);
 649                                 /* Jump to the top */
 650                         } else {
 651                                 value = MAX (value - increment, adjustment->lower);
 652                         }
 653                         break;
 654                 case EV_SCROLL_PAGE_FORWARD:
 655                         /* Do not jump forward if at the last page */
 656                         if (value == (adjustment->upper - adjustment->page_size) && last_page) {
 657                                 /* Do nothing */
 658                         /* At the bottom of a page, assign the lower bound limit of next page */
 659                         } else if (value == (adjustment->upper - adjustment->page_size)) {
 660                                 value = 0;
 661                                 ev_page_cache_set_current_page (view->page_cache, view->current_page + 1);
 662                         /* Jump to the bottom */
 663                         } else {
 664                                 value = MIN (value + increment, adjustment->upper - adjustment->page_size);
 665                         }
 666                         break;
 667                 default:
 668                         break;
 669         }
 670
 671         gtk_adjustment_set_value (adjustment, value);
 672 }
 673
 674 static void
 675 ev_view_binding_activated (EvView *view,
 676                            GtkScrollType scroll,
 677                            gboolean horizontal)
 678 {
 679         GtkAdjustment *adjustment;
 680         double value;
 681
 682         if (view->presentation) {
 683                 switch (scroll) {
 684                         case GTK_SCROLL_STEP_BACKWARD:
 685                                 ev_page_cache_prev_page (view->page_cache);
 686                                 break;
 687                         case GTK_SCROLL_STEP_FORWARD:
 688                                 ev_page_cache_next_page (view->page_cache);
 689                                 break;
 690                         default:
 691                                 break;
 692                 }
 693                 return;
 694         }
 695
 696         if (horizontal) {
 697                 adjustment = view->hadjustment;
 698         } else {
 699                 adjustment = view->vadjustment;
 700         }
 701
 702         value = adjustment->value;
 703
 704         switch (scroll) {
 705                 case GTK_SCROLL_STEP_BACKWARD:
 706                         value -= adjustment->step_increment;
 707                         break;
 708                 case GTK_SCROLL_STEP_FORWARD:
 709                         value += adjustment->step_increment;
 710                         break;
 711                 default:
 712                         break;
 713         }
 714
 715         value = CLAMP (value, adjustment->lower,
 716                        adjustment->upper - adjustment->page_size);
 717
 718         gtk_adjustment_set_value (adjustment, value);
 719 }
 720
 721 #define MARGIN 5
 722
 723 static void
 724 ensure_rectangle_is_visible (EvView *view, GdkRectangle *rect)
 725 {
 726         GtkWidget *widget = GTK_WIDGET (view);
 727         GtkAdjustment *adjustment;
 728         int value;
 729
 730         view->pending_scroll = SCROLL_TO_KEEP_POSITION;
 731
 732         adjustment = view->vadjustment;
 733
 734         if (rect->y < adjustment->value) {
 735                 value = MAX (adjustment->lower, rect->y - MARGIN);
 736                 gtk_adjustment_set_value (view->vadjustment, value);
 737         } else if (rect->y + rect->height >
 738                    adjustment->value + widget->allocation.height) {
 739                 value = MIN (adjustment->upper, rect->y + rect->height -
 740                              widget->allocation.height + MARGIN);
 741                 gtk_adjustment_set_value (view->vadjustment, value);
 742         }
 743
 744         adjustment = view->hadjustment;
 745
 746         if (rect->x < adjustment->value) {
 747                 value = MAX (adjustment->lower, rect->x - MARGIN);
 748                 gtk_adjustment_set_value (view->hadjustment, value);
 749         } else if (rect->x + rect->height >
 750                    adjustment->value + widget->allocation.width) {
 751                 value = MIN (adjustment->upper, rect->x + rect->width -
 752                              widget->allocation.width + MARGIN);
 753                 gtk_adjustment_set_value (view->hadjustment, value);
 754         }
 755 }
 756
 757 /*** Geometry computations ***/
 758
 759 static void
 760 compute_border (EvView *view, int width, int height, GtkBorder *border)
 761 {
 762         if (view->presentation) {
 763                 border->left = 0;
 764                 border->right = 0;
 765                 border->top = 0;
 766                 border->bottom = 0;
 767         } else {
 768                 ev_document_misc_get_page_border_size (width, height, border);
 769         }
 770 }
 771
 772 static void
 773 get_page_y_offset (EvView *view, int page, double zoom, int *y_offset)
 774 {
 775         int max_width, offset;
 776         GtkBorder border;
 777
 778         g_return_if_fail (y_offset != NULL);
 779
 780         ev_page_cache_get_max_width (view->page_cache, view->rotation, zoom, &max_width);
 781
 782         compute_border (view, max_width, max_width, &border);
 783
 784         if (view->dual_page) {
 785                 ev_page_cache_get_height_to_page (view->page_cache, page,
 786                                                   view->rotation, zoom, NULL, &offset);
 787                 offset += (page / 2 + 1) * view->spacing + (page / 2) * (border.top + border.bottom);
 788         } else {
 789                 ev_page_cache_get_height_to_page (view->page_cache, page,
 790                                                   view->rotation, zoom, &offset, NULL);
 791                 offset += (page + 1) * view->spacing + page * (border.top + border.bottom);
 792         }
 793
 794         *y_offset = offset;
 795         return;
 796 }
 797
 798 static gboolean
 799 get_page_extents (EvView       *view,
 800                   gint          page,
 801                   GdkRectangle *page_area,
 802                   GtkBorder    *border)
 803 {
 804         GtkWidget *widget;
 805         int width, height;
 806
 807         widget = GTK_WIDGET (view);
 808
 809         /* Get the size of the page */
 810         ev_page_cache_get_size (view->page_cache, page,
 811                                 view->rotation,
 812                                 view->scale,
 813                                 &width, &height);
 814         compute_border (view, width, height, border);
 815         page_area->width = width + border->left + border->right;
 816         page_area->height = height + border->top + border->bottom;
 817
 818         if (view->presentation) {
 819                 page_area->x = (MAX (0, widget->allocation.width - width))/2;
 820                 page_area->y = (MAX (0, widget->allocation.height - height))/2;
 821         } else if (view->continuous) {
 822                 gint max_width;
 823                 gint x, y;
 824
 825                 ev_page_cache_get_max_width (view->page_cache, view->rotation,
 826                                              view->scale, &max_width);
 827                 max_width = max_width + border->left + border->right;
 828                 /* Get the location of the bounding box */
 829                 if (view->dual_page) {
 830                         x = view->spacing + (page % 2) * (max_width + view->spacing);
 831                         x = x + MAX (0, widget->allocation.width - (max_width * 2 + view->spacing * 3)) / 2;
 832                         if (page % 2 == 0)
 833                                 x = x + (max_width - width - border->left - border->right);
 834                 } else {
 835                         x = view->spacing;
 836                         x = x + MAX (0, widget->allocation.width - (width + view->spacing * 2)) / 2;
 837                 }
 838
 839                 get_page_y_offset (view, page, view->scale, &y);
 840
 841                 page_area->x = x;
 842                 page_area->y = y;
 843         } else {
 844                 gint x, y;
 845                 if (view->dual_page) {
 846                         gint width_2, height_2;
 847                         gint max_width = width;
 848                         gint max_height = height;
 849                         GtkBorder overall_border;
 850                         gint other_page;
 851
 852                         other_page = page ^ 1;
 853
 854                         /* First, we get the bounding box of the two pages */
 855                         if (other_page < ev_page_cache_get_n_pages (view->page_cache)) {
 856                                 ev_page_cache_get_size (view->page_cache,
 857                                                         other_page,
 858                                                         view->rotation,
 859                                                         view->scale,
 860                                                         &width_2, &height_2);
 861                                 if (width_2 > width)
 862                                         max_width = width_2;
 863                                 if (height_2 > height)
 864                                         max_height = height_2;
 865                         }
 866                         compute_border (view, max_width, max_height, &overall_border);
 867
 868                         /* Find the offsets */
 869                         x = view->spacing;
 870                         y = view->spacing;
 871
 872                         /* Adjust for being the left or right page */
 873                         if (page % 2 == 0)
 874                                 x = x + max_width - width;
 875                         else
 876                                 x = x + (max_width + overall_border.left + overall_border.right) + view->spacing;
 877
 878                         y = y + (max_height - height)/2;
 879
 880                         /* Adjust for extra allocation */
 881                         x = x + MAX (0, widget->allocation.width -
 882                                      ((max_width + overall_border.left + overall_border.right) * 2 + view->spacing * 3))/2;
 883                         y = y + MAX (0, widget->allocation.height - (height + view->spacing * 2))/2;
 884                 } else {
 885                         x = view->spacing;
 886                         y = view->spacing;
 887
 888                         /* Adjust for extra allocation */
 889                         x = x + MAX (0, widget->allocation.width - (width + border->left + border->right + view->spacing * 2))/2;
 890                         y = y + MAX (0, widget->allocation.height - (height + border->top + border->bottom +  view->spacing * 2))/2;
 891                 }
 892
 893                 page_area->x = x;
 894                 page_area->y = y;
 895         }
 896
 897         return TRUE;
 898 }
 899
 900 static void
 901 view_point_to_doc_point (EvView *view,
 902                          GdkPoint *view_point,
 903                          GdkRectangle *page_area,
 904                          double  *doc_point_x,
 905                          double  *doc_point_y)
 906 {
 907         *doc_point_x = (double) (view_point->x - page_area->x) / view->scale;
 908         *doc_point_y = (double) (view_point->y - page_area->y) / view->scale;
 909 }
 910
 911 static void
 912 view_rect_to_doc_rect (EvView *view,
 913                        GdkRectangle *view_rect,
 914                        GdkRectangle *page_area,
 915                        EvRectangle  *doc_rect)
 916 {
 917         doc_rect->x1 = (double) (view_rect->x - page_area->x) / view->scale;
 918         doc_rect->y1 = (double) (view_rect->y - page_area->y) / view->scale;
 919         doc_rect->x2 = doc_rect->x1 + (double) view_rect->width / view->scale;
 920         doc_rect->y2 = doc_rect->y1 + (double) view_rect->height / view->scale;
 921 }
 922
 923 static void
 924 doc_rect_to_view_rect (EvView       *view,
 925                        int           page,
 926                        EvRectangle  *doc_rect,
 927                        GdkRectangle *view_rect)
 928 {
 929         GdkRectangle page_area;
 930         GtkBorder border;
 931         double x, y, w, h;
 932         int width, height;
 933
 934         ev_page_cache_get_size (view->page_cache, page,
 935                                 view->rotation,
 936                                 1.0,
 937                                 &width, &height);
 938
 939         if (view->rotation == 0) {
 940                 x = doc_rect->x1;
 941                 y = doc_rect->y1;
 942                 w = doc_rect->x2 - doc_rect->x1;
 943                 h = doc_rect->y2 - doc_rect->y1;
 944         } else if (view->rotation == 90) {
 945                 x = width - doc_rect->y2;
 946                 y = doc_rect->x1;
 947                 w = doc_rect->y2 - doc_rect->y1;
 948                 h = doc_rect->x2 - doc_rect->x1;
 949         } else if (view->rotation == 180) {
 950                 x = width - doc_rect->x2;
 951                 y = height - doc_rect->y2;
 952                 w = doc_rect->x2 - doc_rect->x1;
 953                 h = doc_rect->y2 - doc_rect->y1;
 954         } else if (view->rotation == 270) {
 955                 x = doc_rect->y1;
 956                 y = height - doc_rect->x2;
 957                 w = doc_rect->y2 - doc_rect->y1;
 958                 h = doc_rect->x2 - doc_rect->x1;
 959         } else {
 960                 g_assert_not_reached ();
 961         }
 962
 963         get_page_extents (view, page, &page_area, &border);
 964
 965         view_rect->x = x * view->scale + page_area.x;
 966         view_rect->y = y * view->scale + page_area.y;
 967         view_rect->width = w * view->scale;
 968         view_rect->height = h * view->scale;
 969 }
 970
 971 static void
 972 find_page_at_location (EvView  *view,
 973                        gdouble  x,
 974                        gdouble  y,
 975                        gint    *page,
 976                        gint    *x_offset,
 977                        gint    *y_offset)
 978 {
 979         int i;
 980
 981         if (view->document == NULL)
 982                 return;
 983
 984         g_assert (page);
 985         g_assert (x_offset);
 986         g_assert (y_offset);
 987
 988         for (i = view->start_page; i <= view->end_page; i++) {
 989                 GdkRectangle page_area;
 990                 GtkBorder border;
 991
 992                 if (! get_page_extents (view, i, &page_area, &border))
 993                         continue;
 994
 995                 if ((x >= page_area.x + border.left) &&
 996                     (x < page_area.x + page_area.width - border.right) &&
 997                     (y >= page_area.y + border.top) &&
 998                     (y < page_area.y + page_area.height - border.bottom)) {
 999                         *page = i;
1000                         *x_offset = x - (page_area.x + border.left);
1001                         *y_offset = y - (page_area.y + border.top);
1002                         return;
1003                 }
1004         }
1005
1006         *page = -1;
1007 }
1008
1009 static gboolean
1010 location_in_text (EvView  *view,
1011                   gdouble  x,
1012                   gdouble  y)
1013 {
1014         GdkRegion *region;
1015         gint page = -1;
1016         gint x_offset = 0, y_offset = 0;
1017
1018         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1019
1020         if (page == -1)
1021                 return FALSE;
1022
1023         region = ev_pixbuf_cache_get_text_mapping (view->pixbuf_cache, page);
1024
1025         if (region)
1026                 return gdk_region_point_in (region, x_offset / view->scale, y_offset / view->scale);
1027         else
1028                 return FALSE;
1029 }
1030
1031 /*** Hyperref ***/
1032 static EvLink *
1033 get_link_at_location (EvView  *view,
1034                       gdouble  x,
1035                       gdouble  y)
1036 {
1037         gint page = -1;
1038         gint x_offset = 0, y_offset = 0;
1039         GList *link_mapping;
1040
1041         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1042
1043         if (page == -1)
1044                 return NULL;
1045
1046         link_mapping = ev_pixbuf_cache_get_link_mapping (view->pixbuf_cache, page);
1047
1048         if (link_mapping)
1049                 return ev_link_mapping_find (link_mapping, x_offset / view->scale, y_offset / view->scale);
1050         else
1051                 return NULL;
1052 }
1053
1054 /* FIXME: standardize this sometime */
1055 static void
1056 go_to_link (EvView *view, EvLink *link)
1057 {
1058         EvLinkType type;
1059         const char *uri;
1060         int page;
1061
1062         type = ev_link_get_link_type (link);
1063
1064         switch (type) {
1065                 case EV_LINK_TYPE_TITLE:
1066                         break;
1067                 case EV_LINK_TYPE_PAGE:
1068                         page = ev_link_get_page (link);
1069                         ev_page_cache_set_current_page (view->page_cache, page);
1070                         break;
1071                 case EV_LINK_TYPE_EXTERNAL_URI:
1072                         uri = ev_link_get_uri (link);
1073                         gnome_vfs_url_show (uri);
1074                         break;
1075         }
1076 }
1077
1078 static char *
1079 status_message_from_link (EvView *view, EvLink *link)
1080 {
1081         EvLinkType type;
1082         char *msg = NULL;
1083         char *page_label;
1084
1085         type = ev_link_get_link_type (link);
1086
1087         switch (type) {
1088                 case EV_LINK_TYPE_TITLE:
1089                         if (ev_link_get_title (link))
1090                                 msg = g_strdup (ev_link_get_title (link));
1091                         break;
1092                 case EV_LINK_TYPE_PAGE:
1093                         page_label = ev_page_cache_get_page_label (view->page_cache, ev_link_get_page (link));
1094                         msg = g_strdup_printf (_("Go to page %s"), page_label);
1095                         g_free (page_label);
1096                         break;
1097                 case EV_LINK_TYPE_EXTERNAL_URI:
1098                         msg = g_strdup (ev_link_get_uri (link));
1099                         break;
1100                 default:
1101                         break;
1102         }
1103
1104         return msg;
1105 }
1106
1107
1108 /*** GtkWidget implementation ***/
1109
1110 static void
1111 ev_view_size_request_continuous_dual_page (EvView         *view,
1112                                            GtkRequisition *requisition)
1113 {
1114         int max_width;
1115         gint n_pages;
1116         GtkBorder border;
1117
1118         ev_page_cache_get_max_width (view->page_cache, view->rotation,
1119                                      view->scale, &max_width);
1120         compute_border (view, max_width, max_width, &border);
1121
1122         n_pages = ev_page_cache_get_n_pages (view->page_cache) + 1;
1123
1124         requisition->width = (max_width + border.left + border.right) * 2 + (view->spacing * 3);
1125         get_page_y_offset (view, n_pages, view->scale, &requisition->height);
1126
1127         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
1128                 requisition->width = 1;
1129         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
1130                 requisition->width = 1;
1131                 /* FIXME: This could actually be set on one page docs or docs
1132                  * with a strange aspect ratio. */
1133                 /* requisition->height = 1;*/
1134         }
1135 }
1136
1137 static void
1138 ev_view_size_request_continuous (EvView         *view,
1139                                  GtkRequisition *requisition)
1140 {
1141         int max_width;
1142         int n_pages;
1143         GtkBorder border;
1144
1145
1146         ev_page_cache_get_max_width (view->page_cache, view->rotation,
1147                                      view->scale, &max_width);
1148         n_pages = ev_page_cache_get_n_pages (view->page_cache);
1149         compute_border (view, max_width, max_width, &border);
1150
1151         requisition->width = max_width + (view->spacing * 2) + border.left + border.right;
1152         get_page_y_offset (view, n_pages, view->scale, &requisition->height);
1153
1154         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
1155                 requisition->width = 1;
1156         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
1157                 requisition->width = 1;
1158                 /* FIXME: This could actually be set on one page docs or docs
1159                  * with a strange aspect ratio. */
1160                 /* requisition->height = 1;*/
1161         }
1162 }
1163
1164 static void
1165 ev_view_size_request_dual_page (EvView         *view,
1166                                 GtkRequisition *requisition)
1167 {
1168         GtkBorder border;
1169         gint width, height;
1170
1171         /* Find the largest of the two. */
1172         ev_page_cache_get_size (view->page_cache,
1173                                 view->current_page,
1174                                 view->rotation,
1175                                 view->scale,
1176                                 &width, &height);
1177         if (view->current_page + 1 < ev_page_cache_get_n_pages (view->page_cache)) {
1178                 gint width_2, height_2;
1179                 ev_page_cache_get_size (view->page_cache,
1180                                         view->current_page + 1,
1181                                         view->rotation,
1182                                         view->scale,
1183                                         &width_2, &height_2);
1184                 if (width_2 > width) {
1185                         width = width_2;
1186                         height = height_2;
1187                 }
1188         }
1189         compute_border (view, width, height, &border);
1190
1191         requisition->width = ((width + border.left + border.right) * 2) +
1192                 (view->spacing * 3);
1193         requisition->height = (height + border.top + border.bottom) +
1194                 (view->spacing * 2);
1195
1196         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
1197                 requisition->width = 1;
1198         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
1199                 requisition->width = 1;
1200                 requisition->height = 1;
1201         }
1202 }
1203
1204 static void
1205 ev_view_size_request_single_page (EvView         *view,
1206                                   GtkRequisition *requisition)
1207 {
1208         GtkBorder border;
1209         gint width, height;
1210
1211         ev_page_cache_get_size (view->page_cache,
1212                                 view->current_page,
1213                                 view->rotation,
1214                                 view->scale,
1215                                 &width, &height);
1216         compute_border (view, width, height, &border);
1217
1218         requisition->width = width + border.left + border.right + (2 * view->spacing);
1219         requisition->height = height + border.top + border.bottom + (2 * view->spacing);
1220
1221         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
1222                 requisition->width = 1;
1223                 requisition->height = height + border.top + border.bottom + (2 * view->spacing);
1224         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
1225                 requisition->width = 1;
1226                 requisition->height = 1;
1227         }
1228 }
1229
1230 static void
1231 ev_view_size_request (GtkWidget      *widget,
1232                       GtkRequisition *requisition)
1233 {
1234         EvView *view = EV_VIEW (widget);
1235
1236         if (view->document == NULL) {
1237                 requisition->width = 1;
1238                 requisition->height = 1;
1239                 return;
1240         }
1241
1242         if (view->presentation) {
1243                 requisition->width = 1;
1244                 requisition->height = 1;
1245                 return;
1246         }
1247
1248         if (view->continuous && view->dual_page)
1249                 ev_view_size_request_continuous_dual_page (view, requisition);
1250         else if (view->continuous)
1251                 ev_view_size_request_continuous (view, requisition);
1252         else if (view->dual_page)
1253                 ev_view_size_request_dual_page (view, requisition);
1254         else
1255                 ev_view_size_request_single_page (view, requisition);
1256 }
1257
1258 static void
1259 ev_view_size_allocate (GtkWidget      *widget,
1260                        GtkAllocation  *allocation)
1261 {
1262         EvView *view = EV_VIEW (widget);
1263
1264         if (view->sizing_mode == EV_SIZING_FIT_WIDTH ||
1265                   view->sizing_mode == EV_SIZING_BEST_FIT) {
1266
1267                 g_signal_emit (view, signals[SIGNAL_ZOOM_INVALID], 0);
1268
1269                 ev_view_size_request (widget, &widget->requisition);
1270         }
1271
1272         view_set_adjustment_values (view, GTK_ORIENTATION_HORIZONTAL);
1273         view_set_adjustment_values (view, GTK_ORIENTATION_VERTICAL);
1274
1275         view->pending_scroll = SCROLL_TO_KEEP_POSITION;
1276         view->pending_resize = FALSE;
1277
1278         if (view->document)
1279                 view_update_range_and_current_page (view);
1280
1281         GTK_WIDGET_CLASS (ev_view_parent_class)->size_allocate (widget, allocation);
1282 }
1283
1284 static void
1285 ev_view_realize (GtkWidget *widget)
1286 {
1287         EvView *view = EV_VIEW (widget);
1288         GdkWindowAttr attributes;
1289
1290         GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
1291
1292
1293         attributes.window_type = GDK_WINDOW_CHILD;
1294         attributes.wclass = GDK_INPUT_OUTPUT;
1295         attributes.visual = gtk_widget_get_visual (widget);
1296         attributes.colormap = gtk_widget_get_colormap (widget);
1297
1298         attributes.x = widget->allocation.x;
1299         attributes.y = widget->allocation.y;
1300         attributes.width = widget->allocation.width;
1301         attributes.height = widget->allocation.height;
1302         attributes.event_mask = GDK_EXPOSURE_MASK |
1303                                 GDK_BUTTON_PRESS_MASK |
1304                                 GDK_BUTTON_RELEASE_MASK |
1305                                 GDK_SCROLL_MASK |
1306                                 GDK_KEY_PRESS_MASK |
1307                                 GDK_POINTER_MOTION_MASK |
1308                                 GDK_LEAVE_NOTIFY_MASK;
1309
1310         widget->window = gdk_window_new (gtk_widget_get_parent_window (widget),
1311                                          &attributes,
1312                                          GDK_WA_X | GDK_WA_Y |
1313                                          GDK_WA_COLORMAP |
1314                                          GDK_WA_VISUAL);
1315         gdk_window_set_user_data (widget->window, widget);
1316         widget->style = gtk_style_attach (widget->style, widget->window);
1317
1318         if (view->presentation)
1319                 gdk_window_set_background (widget->window, &widget->style->black);
1320         else
1321                 gdk_window_set_background (widget->window, &widget->style->mid [GTK_STATE_NORMAL]);
1322 }
1323
1324 static void
1325 ev_view_unrealize (GtkWidget *widget)
1326 {
1327         GTK_WIDGET_CLASS (ev_view_parent_class)->unrealize (widget);
1328 }
1329
1330 static gboolean
1331 ev_view_scroll_event (GtkWidget *widget, GdkEventScroll *event)
1332 {
1333         EvView *view = EV_VIEW (widget);
1334
1335         if ((event->state & GDK_CONTROL_MASK) != 0) {
1336
1337                  ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1338
1339                  if (event->direction == GDK_SCROLL_UP ||
1340                         event->direction == GDK_SCROLL_LEFT) {
1341                             if (ev_view_can_zoom_in (view)) {
1342                                     ev_view_zoom_in (view);
1343                             }
1344                  } else {
1345                             if (ev_view_can_zoom_out (view)) {
1346                                     ev_view_zoom_out (view);
1347                             }
1348                  }
1349                  return TRUE;
1350         }
1351
1352         if ((event->state & GDK_SHIFT_MASK) != 0) {
1353                 if (event->direction == GDK_SCROLL_UP)
1354                         event->direction = GDK_SCROLL_LEFT;
1355                 if (event->direction == GDK_SCROLL_DOWN)
1356                         event->direction = GDK_SCROLL_RIGHT;
1357         }
1358
1359         return FALSE;
1360 }
1361
1362 static EvViewSelection *
1363 find_selection_for_page (EvView *view,
1364                          gint    page)
1365 {
1366         GList *list;
1367
1368         for (list = view->selection_info.selections; list != NULL; list = list->next) {
1369                 EvViewSelection *selection;
1370
1371                 selection = (EvViewSelection *) list->data;
1372
1373                 if (selection->page == page)
1374                         return selection;
1375         }
1376
1377         return NULL;
1378 }
1379
1380 static gboolean
1381 ev_view_expose_event (GtkWidget      *widget,
1382                       GdkEventExpose *event)
1383 {
1384         EvView *view = EV_VIEW (widget);
1385         int i;
1386
1387         if (view->document == NULL)
1388                 return FALSE;
1389
1390         for (i = view->start_page; i <= view->end_page; i++) {
1391                 GdkRectangle page_area;
1392                 GtkBorder border;
1393
1394                 if (!get_page_extents (view, i, &page_area, &border))
1395                         continue;
1396
1397                 page_area.x -= view->scroll_x;
1398                 page_area.y -= view->scroll_y;
1399
1400                 draw_one_page (view, i, &page_area, &border, &(event->area));
1401
1402                 if (EV_IS_DOCUMENT_FIND (view->document))
1403                         highlight_find_results (view, i);
1404         }
1405
1406         return FALSE;
1407 }
1408
1409 static gboolean
1410 ev_view_button_press_event (GtkWidget      *widget,
1411                             GdkEventButton *event)
1412 {
1413         EvView *view = EV_VIEW (widget);
1414
1415         if (!GTK_WIDGET_HAS_FOCUS (widget)) {
1416                 gtk_widget_grab_focus (widget);
1417         }
1418
1419         view->pressed_button = event->button;
1420
1421         switch (event->button) {
1422                 case 1:
1423                         if (view->selection_info.selections) {
1424                                 clear_selection (view);
1425                                 gtk_widget_queue_draw (widget);
1426                         }
1427
1428                         view->selection_info.start.x = event->x + view->scroll_x;
1429                         view->selection_info.start.y = event->y + view->scroll_y;
1430                         return TRUE;
1431                 case 2:
1432                         /* use root coordinates as reference point because
1433                          * scrolling changes window relative coordinates */
1434                         view->drag_info.start.x = event->x_root;
1435                         view->drag_info.start.y = event->y_root;
1436                         view->drag_info.hadj = gtk_adjustment_get_value (view->hadjustment);
1437                         view->drag_info.vadj = gtk_adjustment_get_value (view->vadjustment);
1438
1439                         ev_view_set_cursor (view, EV_VIEW_CURSOR_DRAG);
1440
1441                         return TRUE;
1442         }
1443
1444         return FALSE;
1445 }
1446
1447
1448 static gboolean
1449 selection_update_idle_cb (EvView *view)
1450 {
1451         GdkPoint point;
1452         point.x = view->motion_x;
1453         point.y = view->motion_y;
1454         compute_selections (view, &view->selection_info.start, &point);
1455
1456         view->selection_update_id = 0;
1457         return FALSE;
1458 }
1459
1460 static gboolean
1461 ev_view_motion_notify_event (GtkWidget      *widget,
1462                              GdkEventMotion *event)
1463 {
1464         EvView *view = EV_VIEW (widget);
1465
1466         if (!view->document)
1467                 return FALSE;
1468
1469         /* For the Evince 0.4.x release, we limit selection to un-rotated
1470          * documents only.
1471          */
1472         if (view->pressed_button == 1 &&
1473             view->rotation == 0) {
1474                 view->selection_info.in_selection = TRUE;
1475                 view->motion_x = event->x + view->scroll_x;
1476                 view->motion_y = event->y + view->scroll_y;
1477
1478                 /* Queue an idle to handle the motion.  We do this because
1479                  * handling any selection events in the motion could be slower
1480                  * than new motion events reach us.  We always put it in the
1481                  * idle to make sure we catch up and don't visibly lag the
1482                  * mouse. */
1483                 if (! view->selection_update_id)
1484                         view->selection_update_id = g_idle_add ((GSourceFunc)selection_update_idle_cb, view);
1485
1486                 return TRUE;
1487         } else if (view->pressed_button == 2) {
1488                 if (!view->drag_info.in_drag) {
1489                         gboolean start;
1490
1491                         start = gtk_drag_check_threshold (widget,
1492                                                           view->drag_info.start.x,
1493                                                           view->drag_info.start.y,
1494                                                           event->x_root,
1495                                                           event->y_root);
1496                         view->drag_info.in_drag = start;
1497                 }
1498
1499                 if (view->drag_info.in_drag) {
1500                         int dx, dy;
1501                         gdouble dhadj_value, dvadj_value;
1502
1503                         dx = event->x_root - view->drag_info.start.x;
1504                         dy = event->y_root - view->drag_info.start.y;
1505
1506                         dhadj_value = view->hadjustment->page_size *
1507                                       (gdouble)dx / widget->allocation.width;
1508                         dvadj_value = view->vadjustment->page_size *
1509                                       (gdouble)dy / widget->allocation.height;
1510
1511                         /* clamp scrolling to visible area */
1512                         gtk_adjustment_set_value (view->hadjustment,
1513                                                   MIN(view->drag_info.hadj - dhadj_value,
1514                                                       view->hadjustment->upper -
1515                                                       view->hadjustment->page_size));
1516                         gtk_adjustment_set_value (view->vadjustment,
1517                                                   MIN(view->drag_info.vadj - dvadj_value,
1518                                                       view->vadjustment->upper -
1519                                                       view->vadjustment->page_size));
1520
1521                         return TRUE;
1522                 }
1523         /* For the Evince 0.4.x release, we limit links to un-rotated documents
1524          * only.
1525          */
1526         } else if (view->pressed_button <= 0 &&
1527                    view->rotation == 0) {
1528                 EvLink *link;
1529
1530                 link = get_link_at_location (view, event->x + view->scroll_x, event->y + view->scroll_y);
1531                 if (link) {
1532                         char *msg;
1533
1534                         msg = status_message_from_link (view, link);
1535                         ev_view_set_status (view, msg);
1536                         ev_view_set_cursor (view, EV_VIEW_CURSOR_LINK);
1537                         g_free (msg);
1538                 } else if (location_in_text (view, event->x + view->scroll_x, event->y + view->scroll_y)) {
1539                         ev_view_set_cursor (view, EV_VIEW_CURSOR_IBEAM);
1540                 } else {
1541                         ev_view_set_status (view, NULL);
1542                         if (view->cursor == EV_VIEW_CURSOR_LINK ||
1543                             view->cursor == EV_VIEW_CURSOR_IBEAM)
1544                                 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
1545                 }
1546                 return TRUE;
1547         }
1548
1549         return FALSE;
1550 }
1551
1552 static gboolean
1553 ev_view_button_release_event (GtkWidget      *widget,
1554                               GdkEventButton *event)
1555 {
1556         EvView *view = EV_VIEW (widget);
1557
1558         if (view->pressed_button == 2) {
1559                 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
1560         }
1561
1562         view->pressed_button = -1;
1563         view->drag_info.in_drag = FALSE;
1564
1565         if (view->selection_info.selections) {
1566                 ev_view_update_primary_selection (view);
1567         } else if (view->document) {
1568                 EvLink *link;
1569
1570                 link = get_link_at_location (view, event->x + view->scroll_x, event->y + view->scroll_y);
1571                 if (link) {
1572                         go_to_link (view, link);
1573                 }
1574         }
1575
1576         return FALSE;
1577 }
1578
1579 static gint
1580 ev_view_focus_in (GtkWidget     *widget,
1581                   GdkEventFocus *event)
1582 {
1583         if (EV_VIEW (widget)->pixbuf_cache)
1584                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
1585         gtk_widget_queue_draw (widget);
1586
1587         return FALSE;
1588 }
1589
1590 static gint
1591 ev_view_focus_out (GtkWidget     *widget,
1592                      GdkEventFocus *event)
1593 {
1594         if (EV_VIEW (widget)->pixbuf_cache)
1595                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
1596         gtk_widget_queue_draw (widget);
1597
1598         return FALSE;
1599 }
1600
1601 static gboolean
1602 ev_view_leave_notify_event (GtkWidget *widget, GdkEventCrossing   *event)
1603 {
1604         EvView *view = EV_VIEW (widget);
1605
1606         ev_view_set_status (view, NULL);
1607
1608         if (view->cursor == EV_VIEW_CURSOR_LINK ||
1609             view->cursor == EV_VIEW_CURSOR_IBEAM)
1610                 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
1611
1612         return FALSE;
1613 }
1614
1615 static void
1616 ev_view_style_set (GtkWidget *widget,
1617                    GtkStyle  *old_style)
1618 {
1619         if (EV_VIEW (widget)->pixbuf_cache)
1620                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
1621
1622         GTK_WIDGET_CLASS (ev_view_parent_class)->style_set (widget, old_style);
1623 }
1624
1625
1626 /*** Drawing ***/
1627
1628 static guint32
1629 ev_gdk_color_to_rgb (const GdkColor *color)
1630 {
1631   guint32 result;
1632   result = (0xff0000 | (color->red & 0xff00));
1633   result <<= 8;
1634   result |= ((color->green & 0xff00) | (color->blue >> 8));
1635   return result;
1636 }
1637
1638 static void
1639 draw_rubberband (GtkWidget *widget, GdkWindow *window,
1640                  const GdkRectangle *rect, guchar alpha)
1641 {
1642         GdkGC *gc;
1643         GdkPixbuf *pixbuf;
1644         GdkColor *fill_color_gdk;
1645         guint fill_color;
1646
1647         fill_color_gdk = gdk_color_copy (&GTK_WIDGET (widget)->style->base[GTK_STATE_SELECTED]);
1648         fill_color = ev_gdk_color_to_rgb (fill_color_gdk) << 8 | alpha;
1649
1650         pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE, 8,
1651                                  rect->width, rect->height);
1652         gdk_pixbuf_fill (pixbuf, fill_color);
1653
1654         gdk_draw_pixbuf (window, NULL, pixbuf,
1655                          0, 0,
1656                          rect->x - EV_VIEW (widget)->scroll_x, rect->y - EV_VIEW (widget)->scroll_y,
1657                          rect->width, rect->height,
1658                          GDK_RGB_DITHER_NONE,
1659                          0, 0);
1660
1661         g_object_unref (pixbuf);
1662
1663         gc = gdk_gc_new (window);
1664         gdk_gc_set_rgb_fg_color (gc, fill_color_gdk);
1665         gdk_draw_rectangle (window, gc, FALSE,
1666                             rect->x - EV_VIEW (widget)->scroll_x, rect->y - EV_VIEW (widget)->scroll_y,
1667                             rect->width - 1,
1668                             rect->height - 1);
1669         g_object_unref (gc);
1670
1671         gdk_color_free (fill_color_gdk);
1672 }
1673
1674
1675 static void
1676 highlight_find_results (EvView *view, int page)
1677 {
1678         EvDocumentFind *find;
1679         int i, results = 0;
1680
1681         g_return_if_fail (EV_IS_DOCUMENT_FIND (view->document));
1682
1683         find = EV_DOCUMENT_FIND (view->document);
1684
1685         results = ev_document_find_get_n_results (find, page);
1686
1687         for (i = 0; i < results; i++) {
1688                 EvRectangle rectangle;
1689                 GdkRectangle view_rectangle;
1690                 guchar alpha;
1691
1692                 if (i == view->find_result && page == view->find_page) {
1693                         alpha = 0x90;
1694                 } else {
1695                         alpha = 0x20;
1696                 }
1697
1698                 ev_document_find_get_result (find, page, i, &rectangle);
1699                 doc_rect_to_view_rect (view, page, &rectangle, &view_rectangle);
1700                 draw_rubberband (GTK_WIDGET (view), GTK_WIDGET(view)->window,
1701                                  &view_rectangle, alpha);
1702         }
1703 }
1704
1705 static void
1706 draw_one_page (EvView          *view,
1707                gint             page,
1708                GdkRectangle    *page_area,
1709                GtkBorder       *border,
1710                GdkRectangle    *expose_area)
1711 {
1712         gint width, height;
1713         GdkPixbuf *current_pixbuf;
1714         GdkRectangle overlap;
1715         GdkRectangle real_page_area;
1716         EvViewSelection *selection;
1717
1718         g_assert (view->document);
1719         if (! gdk_rectangle_intersect (page_area, expose_area, &overlap))
1720                 return;
1721
1722         selection = find_selection_for_page (view, page);
1723         ev_page_cache_get_size (view->page_cache,
1724                                 page, view->rotation,
1725                                 view->scale,
1726                                 &width, &height);
1727         /* Render the document itself */
1728         real_page_area = *page_area;
1729
1730         real_page_area.x += border->left;
1731         real_page_area.y += border->top;
1732         real_page_area.width -= (border->left + border->right);
1733         real_page_area.height -= (border->top + border->bottom);
1734
1735         ev_document_misc_paint_one_page (GTK_WIDGET(view)->window,
1736                                          GTK_WIDGET (view),
1737                                          page_area, border);
1738
1739         if (gdk_rectangle_intersect (&real_page_area, expose_area, &overlap)) {
1740                 GdkPixbuf *selection_pixbuf = NULL;
1741                 GdkPixbuf *scaled_image;
1742                 GdkPixbuf *scaled_selection;
1743
1744                 current_pixbuf = ev_pixbuf_cache_get_pixbuf (view->pixbuf_cache, page);
1745
1746                 /* Get the selection pixbuf iff we have something to draw */
1747                 if (current_pixbuf && view->selection_mode == EV_VIEW_SELECTION_TEXT && selection)
1748                         selection_pixbuf = ev_pixbuf_cache_get_selection_pixbuf (view->pixbuf_cache,
1749                                                                                  page,
1750                                                                                  view->scale,
1751                                                                                  NULL);
1752
1753                 if (current_pixbuf == NULL)
1754                         scaled_image = NULL;
1755                 else if (width == gdk_pixbuf_get_width (current_pixbuf) &&
1756                          height == gdk_pixbuf_get_height (current_pixbuf))
1757                         scaled_image = g_object_ref (current_pixbuf);
1758                 else
1759                         /* FIXME: We don't want to scale the whole area, just the right
1760                          * area of it */
1761                         scaled_image = gdk_pixbuf_scale_simple (current_pixbuf,
1762                                                                 width, height,
1763                                                                 GDK_INTERP_NEAREST);
1764
1765                 if (selection_pixbuf == NULL)
1766                         scaled_selection = NULL;
1767                 else if (width == gdk_pixbuf_get_width (selection_pixbuf) &&
1768                          height == gdk_pixbuf_get_height (selection_pixbuf))
1769                         scaled_selection = g_object_ref (selection_pixbuf);
1770                 else
1771                         /* FIXME: We don't want to scale the whole area, just the right
1772                          * area of it */
1773                         scaled_selection = gdk_pixbuf_scale_simple (selection_pixbuf,
1774                                                                     width, height,
1775                                                                     GDK_INTERP_NEAREST);
1776
1777                 if (scaled_image) {
1778                         gdk_draw_pixbuf (GTK_WIDGET(view)->window,
1779                                          GTK_WIDGET (view)->style->fg_gc[GTK_STATE_NORMAL],
1780                                          scaled_image,
1781                                          overlap.x - real_page_area.x,
1782                                          overlap.y - real_page_area.y,
1783                                          overlap.x, overlap.y,
1784                                          overlap.width, overlap.height,
1785                                          GDK_RGB_DITHER_NORMAL,
1786                                          0, 0);
1787                         g_object_unref (scaled_image);
1788                 }
1789
1790                 if (scaled_selection) {
1791                         gdk_draw_pixbuf (GTK_WIDGET(view)->window,
1792                                          GTK_WIDGET (view)->style->fg_gc[GTK_STATE_NORMAL],
1793                                          scaled_selection,
1794                                          overlap.x - real_page_area.x,
1795                                          overlap.y - real_page_area.y,
1796                                          overlap.x, overlap.y,
1797                                          overlap.width, overlap.height,
1798                                          GDK_RGB_DITHER_NORMAL,
1799                                          0, 0);
1800                         g_object_unref (scaled_selection);
1801                 }
1802         }
1803 }
1804
1805 /*** GObject functions ***/
1806
1807 static void
1808 ev_view_finalize (GObject *object)
1809 {
1810         EvView *view = EV_VIEW (object);
1811
1812         LOG ("Finalize");
1813
1814         g_free (view->status);
1815         g_free (view->find_status);
1816
1817         clear_selection (view);
1818
1819         G_OBJECT_CLASS (ev_view_parent_class)->finalize (object);
1820 }
1821
1822 static void
1823 ev_view_destroy (GtkObject *object)
1824 {
1825         EvView *view = EV_VIEW (object);
1826
1827         if (view->document) {
1828                 g_object_unref (view->document);
1829                 view->document = NULL;
1830         }
1831         if (view->pixbuf_cache) {
1832                 g_object_unref (view->pixbuf_cache);
1833                 view->pixbuf_cache = NULL;
1834         }
1835         ev_view_set_scroll_adjustments (view, NULL, NULL);
1836
1837         GTK_OBJECT_CLASS (ev_view_parent_class)->destroy (object);
1838 }
1839
1840 static void
1841 ev_view_set_property (GObject      *object,
1842                       guint         prop_id,
1843                       const GValue *value,
1844                       GParamSpec   *pspec)
1845 {
1846         EvView *view = EV_VIEW (object);
1847
1848         switch (prop_id)
1849         {
1850         case PROP_CONTINUOUS:
1851                 ev_view_set_continuous (view, g_value_get_boolean (value));
1852                 break;
1853         case PROP_DUAL_PAGE:
1854                 ev_view_set_dual_page (view, g_value_get_boolean (value));
1855                 break;
1856         case PROP_FULLSCREEN:
1857                 ev_view_set_fullscreen (view, g_value_get_boolean (value));
1858                 break;
1859         case PROP_PRESENTATION:
1860                 ev_view_set_presentation (view, g_value_get_boolean (value));
1861                 break;
1862         case PROP_SIZING_MODE:
1863                 ev_view_set_sizing_mode (view, g_value_get_enum (value));
1864                 break;
1865         case PROP_ZOOM:
1866                 ev_view_set_zoom (view, g_value_get_double (value), FALSE);
1867                 break;
1868         case PROP_ROTATION:
1869                 ev_view_set_rotation (view, g_value_get_int (value));
1870                 break;
1871         default:
1872                 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1873         }
1874 }
1875
1876 static void
1877 ev_view_get_property (GObject *object,
1878                       guint prop_id,
1879                       GValue *value,
1880                       GParamSpec *pspec)
1881 {
1882         EvView *view = EV_VIEW (object);
1883
1884         switch (prop_id)
1885         {
1886         case PROP_STATUS:
1887                 g_value_set_string (value, view->status);
1888                 break;
1889         case PROP_FIND_STATUS:
1890                 g_value_set_string (value, view->status);
1891                 break;
1892         case PROP_CONTINUOUS:
1893                 g_value_set_boolean (value, view->continuous);
1894                 break;
1895         case PROP_DUAL_PAGE:
1896                 g_value_set_boolean (value, view->dual_page);
1897                 break;
1898         case PROP_FULLSCREEN:
1899                 g_value_set_boolean (value, view->fullscreen);
1900                 break;
1901         case PROP_PRESENTATION:
1902                 g_value_set_boolean (value, view->presentation);
1903                 break;
1904         case PROP_SIZING_MODE:
1905                 g_value_set_enum (value, view->sizing_mode);
1906                 break;
1907         case PROP_ZOOM:
1908                 g_value_set_double (value, view->scale);
1909                 break;
1910         case PROP_ROTATION:
1911                 g_value_set_int (value, view->rotation);
1912                 break;
1913         default:
1914                 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1915         }
1916 }
1917
1918 static void
1919 ev_view_class_init (EvViewClass *class)
1920 {
1921         GObjectClass *object_class = G_OBJECT_CLASS (class);
1922         GtkObjectClass *gtk_object_class = GTK_OBJECT_CLASS (class);
1923         GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
1924         GtkBindingSet *binding_set;
1925
1926         object_class->finalize = ev_view_finalize;
1927         object_class->set_property = ev_view_set_property;
1928         object_class->get_property = ev_view_get_property;
1929
1930         widget_class->expose_event = ev_view_expose_event;
1931         widget_class->button_press_event = ev_view_button_press_event;
1932         widget_class->motion_notify_event = ev_view_motion_notify_event;
1933         widget_class->button_release_event = ev_view_button_release_event;
1934         widget_class->focus_in_event = ev_view_focus_in;
1935         widget_class->focus_out_event = ev_view_focus_out;
1936         widget_class->size_request = ev_view_size_request;
1937         widget_class->size_allocate = ev_view_size_allocate;
1938         widget_class->realize = ev_view_realize;
1939         widget_class->unrealize = ev_view_unrealize;
1940         widget_class->scroll_event = ev_view_scroll_event;
1941         widget_class->leave_notify_event = ev_view_leave_notify_event;
1942         widget_class->style_set = ev_view_style_set;
1943         gtk_object_class->destroy = ev_view_destroy;
1944
1945         class->set_scroll_adjustments = ev_view_set_scroll_adjustments;
1946         class->binding_activated = ev_view_binding_activated;
1947
1948         widget_class->set_scroll_adjustments_signal =
1949             g_signal_new ("set-scroll-adjustments",
1950                           G_OBJECT_CLASS_TYPE (object_class),
1951                           G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1952                           G_STRUCT_OFFSET (EvViewClass, set_scroll_adjustments),
1953                           NULL, NULL,
1954                           ev_marshal_VOID__OBJECT_OBJECT,
1955                           G_TYPE_NONE, 2,
1956                           GTK_TYPE_ADJUSTMENT,
1957                           GTK_TYPE_ADJUSTMENT);
1958
1959         signals[SIGNAL_BINDING_ACTIVATED] = g_signal_new ("binding_activated",
1960                          G_TYPE_FROM_CLASS (object_class),
1961                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1962                          G_STRUCT_OFFSET (EvViewClass, binding_activated),
1963                          NULL, NULL,
1964                          ev_marshal_VOID__ENUM_BOOLEAN,
1965                          G_TYPE_NONE, 2,
1966                          GTK_TYPE_SCROLL_TYPE,
1967                          G_TYPE_BOOLEAN);
1968
1969         signals[SIGNAL_ZOOM_INVALID] = g_signal_new ("zoom-invalid",
1970                          G_TYPE_FROM_CLASS (object_class),
1971                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1972                          G_STRUCT_OFFSET (EvViewClass, zoom_invalid),
1973                          NULL, NULL,
1974                          ev_marshal_VOID__VOID,
1975                          G_TYPE_NONE, 0, G_TYPE_NONE);
1976
1977         g_object_class_install_property (object_class,
1978                                          PROP_STATUS,
1979                                          g_param_spec_string ("status",
1980                                                               "Status Message",
1981                                                               "The status message",
1982                                                               NULL,
1983                                                               G_PARAM_READABLE));
1984
1985         g_object_class_install_property (object_class,
1986                                          PROP_FIND_STATUS,
1987                                          g_param_spec_string ("find-status",
1988                                                               "Find Status Message",
1989                                                               "The find status message",
1990                                                               NULL,
1991                                                               G_PARAM_READABLE));
1992
1993         g_object_class_install_property (object_class,
1994                                          PROP_CONTINUOUS,
1995                                          g_param_spec_boolean ("continuous",
1996                                                                "Continuous",
1997                                                                "Continuous scrolling mode",
1998                                                                TRUE,
1999                                                                G_PARAM_READWRITE));
2000
2001         g_object_class_install_property (object_class,
2002                                          PROP_DUAL_PAGE,
2003                                          g_param_spec_boolean ("dual-page",
2004                                                                "Dual Page",
2005                                                                "Two pages visible at once",
2006                                                                FALSE,
2007                                                                G_PARAM_READWRITE));
2008         g_object_class_install_property (object_class,
2009                                          PROP_FULLSCREEN,
2010                                          g_param_spec_boolean ("fullscreen",
2011                                                                "Full Screen",
2012                                                                "Draw page in a fullscreen fashion",
2013                                                                FALSE,
2014                                                                G_PARAM_READWRITE));
2015         g_object_class_install_property (object_class,
2016                                          PROP_PRESENTATION,
2017                                          g_param_spec_boolean ("presentation",
2018                                                                "Presentation",
2019                                                                "Draw page in presentation mode",
2020                                                                TRUE,
2021                                                                G_PARAM_READWRITE));
2022
2023         g_object_class_install_property (object_class,
2024                                          PROP_SIZING_MODE,
2025                                          g_param_spec_enum ("sizing-mode",
2026                                                             "Sizing Mode",
2027                                                             "Sizing Mode",
2028                                                             EV_TYPE_SIZING_MODE,
2029                                                             EV_SIZING_FIT_WIDTH,
2030                                                             G_PARAM_READWRITE));
2031
2032         g_object_class_install_property (object_class,
2033                                          PROP_ZOOM,
2034                                          g_param_spec_double ("zoom",
2035                                                               "Zoom factor",
2036                                                                "Zoom factor",
2037                                                                MIN_SCALE,
2038                                                                MAX_SCALE,
2039                                                                1.0,
2040                                                                G_PARAM_READWRITE));
2041         g_object_class_install_property (object_class,
2042                                          PROP_ROTATION,
2043                                          g_param_spec_double ("rotation",
2044                                                               "Rotation",
2045                                                                "Rotation",
2046                                                                0,
2047                                                                360,
2048                                                                0,
2049                                                                G_PARAM_READWRITE));
2050
2051         binding_set = gtk_binding_set_by_class (class);
2052
2053         add_scroll_binding_keypad (binding_set, GDK_Left,  GTK_SCROLL_STEP_BACKWARD, TRUE);
2054         add_scroll_binding_keypad (binding_set, GDK_Right, GTK_SCROLL_STEP_FORWARD,  TRUE);
2055         add_scroll_binding_keypad (binding_set, GDK_Up,    GTK_SCROLL_STEP_BACKWARD, FALSE);
2056         add_scroll_binding_keypad (binding_set, GDK_Down,  GTK_SCROLL_STEP_FORWARD,  FALSE);
2057 }
2058
2059 static void
2060 ev_view_init (EvView *view)
2061 {
2062         GTK_WIDGET_SET_FLAGS (view, GTK_CAN_FOCUS);
2063
2064         view->spacing = 5;
2065         view->scale = 1.0;
2066         view->current_page = 0;
2067         view->pressed_button = -1;
2068         view->cursor = EV_VIEW_CURSOR_NORMAL;
2069         view->drag_info.in_drag = FALSE;
2070         view->selection_info.in_selection = FALSE;
2071
2072         view->selection_mode = EV_VIEW_SELECTION_TEXT;
2073         view->continuous = TRUE;
2074         view->dual_page = FALSE;
2075         view->presentation = FALSE;
2076         view->fullscreen = FALSE;
2077         view->sizing_mode = EV_SIZING_FIT_WIDTH;
2078         view->pending_scroll = SCROLL_TO_KEEP_POSITION;
2079 }
2080
2081 /*** Callbacks ***/
2082
2083 static void
2084 find_changed_cb (EvDocument *document, int page, EvView *view)
2085 {
2086         jump_to_find_page (view, EV_VIEW_FIND_NEXT);
2087         jump_to_find_result (view);
2088         update_find_status_message (view);
2089
2090         if (view->current_page == page)
2091                 gtk_widget_queue_draw (GTK_WIDGET (view));
2092 }
2093
2094 static void
2095 job_finished_cb (EvPixbufCache *pixbuf_cache,
2096                  EvView        *view)
2097 {
2098         gtk_widget_queue_draw (GTK_WIDGET (view));
2099 }
2100
2101 static void
2102 page_changed_cb (EvPageCache *page_cache,
2103                  int          new_page,
2104                  EvView      *view)
2105 {
2106         if (view->current_page != new_page) {
2107
2108                 view->current_page = new_page;
2109                 view->pending_scroll = SCROLL_TO_CURRENT_PAGE;
2110                 gtk_widget_queue_resize (GTK_WIDGET (view));
2111
2112                 if (EV_IS_DOCUMENT_FIND (view->document)) {
2113                         view->find_page = new_page;
2114                         view->find_result = 0;
2115                         update_find_status_message (view);
2116                 }
2117         }
2118 }
2119
2120 static void on_adjustment_value_changed (GtkAdjustment  *adjustment,
2121                                          EvView *view)
2122 {
2123         int dx = 0, dy = 0;
2124
2125         if (! GTK_WIDGET_REALIZED (view))
2126                 return;
2127
2128         if (view->hadjustment) {
2129                 dx = view->scroll_x - (int) view->hadjustment->value;
2130                 view->scroll_x = (int) view->hadjustment->value;
2131         } else {
2132                 view->scroll_x = 0;
2133         }
2134
2135         if (view->vadjustment) {
2136                 dy = view->scroll_y - (int) view->vadjustment->value;
2137                 view->scroll_y = (int) view->vadjustment->value;
2138         } else {
2139                 view->scroll_y = 0;
2140         }
2141
2142
2143         if (view->pending_resize)
2144                 gtk_widget_queue_draw (GTK_WIDGET (view));
2145         else
2146                 gdk_window_scroll (GTK_WIDGET (view)->window, dx, dy);
2147
2148
2149         if (view->document)
2150                 view_update_range_and_current_page (view);
2151 }
2152
2153 GtkWidget*
2154 ev_view_new (void)
2155 {
2156         GtkWidget *view;
2157
2158         view = g_object_new (EV_TYPE_VIEW, NULL);
2159
2160         return view;
2161 }
2162
2163 static void
2164 setup_caches (EvView *view)
2165 {
2166         view->page_cache = ev_page_cache_get (view->document);
2167         g_signal_connect (view->page_cache, "page-changed", G_CALLBACK (page_changed_cb), view);
2168         view->pixbuf_cache = ev_pixbuf_cache_new (GTK_WIDGET (view), view->document);
2169         g_signal_connect (view->pixbuf_cache, "job-finished", G_CALLBACK (job_finished_cb), view);
2170 }
2171
2172 static void
2173 clear_caches (EvView *view)
2174 {
2175         if (view->pixbuf_cache) {
2176                 g_object_unref (view->pixbuf_cache);
2177                 view->pixbuf_cache = NULL;
2178         }
2179
2180         if (view->page_cache) {
2181                 g_object_unref (view->page_cache);
2182                 view->page_cache = NULL;
2183         }
2184 }
2185
2186 void
2187 ev_view_set_document (EvView     *view,
2188                       EvDocument *document)
2189 {
2190         g_return_if_fail (EV_IS_VIEW (view));
2191
2192         if (document != view->document) {
2193                 clear_caches (view);
2194
2195                 if (view->document) {
2196                         g_signal_handlers_disconnect_by_func (view->document,
2197                                                               find_changed_cb,
2198                                                               view);
2199                         g_object_unref (view->document);
2200                         view->page_cache = NULL;
2201
2202                 }
2203
2204                 view->document = document;
2205                 view->find_page = 0;
2206                 view->find_result = 0;
2207
2208                 if (view->document) {
2209                         g_object_ref (view->document);
2210                         if (EV_IS_DOCUMENT_FIND (view->document)) {
2211                                 g_signal_connect (view->document,
2212                                                   "find_changed",
2213                                                   G_CALLBACK (find_changed_cb),
2214                                                   view);
2215                         }
2216
2217                         setup_caches (view);
2218                 }
2219
2220                 gtk_widget_queue_resize (GTK_WIDGET (view));
2221         }
2222 }
2223
2224 /*** Zoom and sizing mode ***/
2225
2226 #define EPSILON 0.0000001
2227 void
2228 ev_view_set_zoom (EvView   *view,
2229                   double    factor,
2230                   gboolean  relative)
2231 {
2232         double scale;
2233
2234         if (relative)
2235                 scale = view->scale * factor;
2236         else
2237                 scale = factor;
2238
2239         scale = CLAMP (scale, MIN_SCALE, MAX_SCALE);
2240
2241         if (ABS (view->scale - scale) < EPSILON)
2242                 return;
2243
2244         view->scale = scale;
2245         view->pending_resize = TRUE;
2246
2247         gtk_widget_queue_resize (GTK_WIDGET (view));
2248
2249         g_object_notify (G_OBJECT (view), "zoom");
2250 }
2251
2252 double
2253 ev_view_get_zoom (EvView *view)
2254 {
2255         return view->scale;
2256 }
2257
2258 gboolean
2259 ev_view_get_continuous (EvView *view)
2260 {
2261         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
2262
2263         return view->continuous;
2264 }
2265
2266 void
2267 ev_view_set_continuous (EvView   *view,
2268                         gboolean  continuous)
2269 {
2270         g_return_if_fail (EV_IS_VIEW (view));
2271
2272         continuous = continuous != FALSE;
2273
2274         if (view->continuous != continuous) {
2275                 view->continuous = continuous;
2276                 view->pending_scroll = SCROLL_TO_CURRENT_PAGE;
2277                 gtk_widget_queue_resize (GTK_WIDGET (view));
2278         }
2279
2280         g_object_notify (G_OBJECT (view), "continuous");
2281 }
2282
2283 gboolean
2284 ev_view_get_dual_page (EvView *view)
2285 {
2286         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
2287
2288         return view->dual_page;
2289 }
2290
2291 void
2292 ev_view_set_dual_page (EvView   *view,
2293                        gboolean  dual_page)
2294 {
2295         g_return_if_fail (EV_IS_VIEW (view));
2296
2297         dual_page = dual_page != FALSE;
2298
2299         if (view->dual_page == dual_page)
2300                 return;
2301
2302         view->pending_scroll = SCROLL_TO_CURRENT_PAGE;
2303         view->dual_page = dual_page;
2304         /* FIXME: if we're keeping the pixbuf cache around, we should extend the
2305          * preload_cache_size to be 2 if dual_page is set.
2306          */
2307         gtk_widget_queue_resize (GTK_WIDGET (view));
2308
2309         g_object_notify (G_OBJECT (view), "dual-page");
2310 }
2311
2312 void
2313 ev_view_set_fullscreen (EvView   *view,
2314                          gboolean  fullscreen)
2315 {
2316         g_return_if_fail (EV_IS_VIEW (view));
2317
2318         fullscreen = fullscreen != FALSE;
2319
2320         if (view->fullscreen == fullscreen)
2321                 return;
2322
2323         view->fullscreen = fullscreen;
2324         gtk_widget_queue_resize (GTK_WIDGET (view));
2325
2326         g_object_notify (G_OBJECT (view), "fullscreen");
2327 }
2328
2329 gboolean
2330 ev_view_get_fullscreen (EvView *view)
2331 {
2332         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
2333
2334         return view->fullscreen;
2335 }
2336
2337 void
2338 ev_view_set_presentation (EvView   *view,
2339                           gboolean  presentation)
2340 {
2341         g_return_if_fail (EV_IS_VIEW (view));
2342
2343         presentation = presentation != FALSE;
2344
2345         if (view->presentation == presentation)
2346                 return;
2347
2348         view->presentation = presentation;
2349         view->pending_scroll = SCROLL_TO_CURRENT_PAGE;
2350         gtk_widget_queue_resize (GTK_WIDGET (view));
2351
2352         if (GTK_WIDGET_REALIZED (view)) {
2353                 if (view->presentation)
2354                         gdk_window_set_background (GTK_WIDGET(view)->window,
2355                                                    &GTK_WIDGET (view)->style->black);
2356                 else
2357                         gdk_window_set_background (GTK_WIDGET(view)->window,
2358                                                    &GTK_WIDGET (view)->style->mid [GTK_STATE_NORMAL]);
2359         }
2360
2361
2362         g_object_notify (G_OBJECT (view), "presentation");
2363 }
2364
2365 gboolean
2366 ev_view_get_presentation (EvView *view)
2367 {
2368         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
2369
2370         return view->presentation;
2371 }
2372
2373 void
2374 ev_view_set_sizing_mode (EvView       *view,
2375                          EvSizingMode  sizing_mode)
2376 {
2377         g_return_if_fail (EV_IS_VIEW (view));
2378
2379         if (view->sizing_mode == sizing_mode)
2380                 return;
2381
2382         view->sizing_mode = sizing_mode;
2383         gtk_widget_queue_resize (GTK_WIDGET (view));
2384
2385         g_object_notify (G_OBJECT (view), "sizing-mode");
2386 }
2387
2388 EvSizingMode
2389 ev_view_get_sizing_mode (EvView *view)
2390 {
2391         g_return_val_if_fail (EV_IS_VIEW (view), EV_SIZING_FREE);
2392
2393         return view->sizing_mode;
2394 }
2395
2396 gboolean
2397 ev_view_can_zoom_in (EvView *view)
2398 {
2399         return view->scale * ZOOM_IN_FACTOR <= MAX_SCALE;
2400 }
2401
2402 gboolean
2403 ev_view_can_zoom_out (EvView *view)
2404 {
2405         return view->scale * ZOOM_OUT_FACTOR >= MIN_SCALE;
2406 }
2407
2408 void
2409 ev_view_zoom_in (EvView *view)
2410 {
2411         g_return_if_fail (view->sizing_mode == EV_SIZING_FREE);
2412
2413         view->pending_scroll = SCROLL_TO_CENTER;
2414         ev_view_set_zoom (view, ZOOM_IN_FACTOR, TRUE);
2415 }
2416
2417 void
2418 ev_view_zoom_out (EvView *view)
2419 {
2420         g_return_if_fail (view->sizing_mode == EV_SIZING_FREE);
2421
2422         view->pending_scroll = SCROLL_TO_CENTER;
2423         ev_view_set_zoom (view, ZOOM_OUT_FACTOR, TRUE);
2424 }
2425
2426 void
2427 ev_view_rotate_right (EvView *view)
2428 {
2429         int rotation = view->rotation + 90;
2430
2431         if (rotation >= 360) {
2432                 rotation -= 360;
2433         }
2434
2435         ev_view_set_rotation (view, rotation);
2436 }
2437
2438 void
2439 ev_view_rotate_left (EvView *view)
2440 {
2441         int rotation = view->rotation - 90;
2442
2443         if (rotation < 0) {
2444                 rotation += 360;
2445         }
2446
2447         ev_view_set_rotation (view, rotation);
2448 }
2449
2450 void
2451 ev_view_set_rotation (EvView *view, int rotation)
2452 {
2453         view->rotation = rotation;
2454
2455         if (view->pixbuf_cache) {
2456                 ev_pixbuf_cache_clear (view->pixbuf_cache);
2457                 gtk_widget_queue_resize (GTK_WIDGET (view));
2458         }
2459
2460         g_object_notify (G_OBJECT (view), "rotation");
2461 }
2462
2463 int
2464 ev_view_get_rotation (EvView *view)
2465 {
2466         return view->rotation;
2467 }
2468
2469 static double
2470 zoom_for_size_fit_width (int doc_width,
2471                          int doc_height,
2472                          int target_width,
2473                          int target_height,
2474                          int vsb_width)
2475 {
2476         double scale;
2477
2478         scale = (double)target_width / doc_width;
2479
2480         if (doc_height * scale > target_height)
2481                 scale = (double) (target_width - vsb_width) / doc_width;
2482
2483         return scale;
2484 }
2485
2486 static double
2487 zoom_for_size_best_fit (int doc_width,
2488                         int doc_height,
2489                         int target_width,
2490                         int target_height,
2491                         int vsb_width,
2492                         int hsb_width)
2493 {
2494         double w_scale;
2495         double h_scale;
2496
2497         w_scale = (double)target_width / doc_width;
2498         h_scale = (double)target_height / doc_height;
2499
2500         if (doc_height * w_scale > target_height)
2501                 w_scale = (double) (target_width - vsb_width) / doc_width;
2502         if (doc_width * h_scale > target_width)
2503                 h_scale = (double) (target_height - hsb_width) / doc_height;
2504
2505         return MIN (w_scale, h_scale);
2506 }
2507
2508
2509 static void
2510 ev_view_zoom_for_size_presentation (EvView *view,
2511                                     int     width,
2512                                     int     height)
2513 {
2514         int doc_width, doc_height;
2515         gdouble scale;
2516
2517         ev_page_cache_get_size (view->page_cache,
2518                                 view->current_page,
2519                                 view->rotation,
2520                                 1.0,
2521                                 &doc_width,
2522                                 &doc_height);
2523         scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, 0, 0);
2524         ev_view_set_zoom (view, scale, FALSE);
2525 }
2526
2527 static void
2528 ev_view_zoom_for_size_continuous_and_dual_page (EvView *view,
2529                            int     width,
2530                            int     height,
2531                            int     vsb_width,
2532                            int     hsb_height)
2533 {
2534         int doc_width, doc_height;
2535         GtkBorder border;
2536         gdouble scale;
2537
2538         ev_page_cache_get_max_width (view->page_cache,
2539                                      view->rotation,
2540                                      1.0,
2541                                      &doc_width);
2542         ev_page_cache_get_max_height (view->page_cache,
2543                                       view->rotation,
2544                                       1.0,
2545                                       &doc_height);
2546         compute_border (view, doc_width, doc_height, &border);
2547
2548         doc_width = doc_width * 2;
2549         width -= (2 * (border.left + border.right) + 3 * view->spacing);
2550         height -= (border.top + border.bottom + 2 * view->spacing - 1);
2551
2552         /* FIXME: We really need to calculate the overall height here, not the
2553          * page height.  We assume there's always a vertical scrollbar for
2554          * now.  We need to fix this. */
2555         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
2556                 scale = zoom_for_size_fit_width (doc_width, doc_height, width - vsb_width, height, 0);
2557         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
2558                 scale = zoom_for_size_best_fit (doc_width, doc_height, width - vsb_width, height, 0, hsb_height);
2559         else
2560                 g_assert_not_reached ();
2561
2562         ev_view_set_zoom (view, scale, FALSE);
2563 }
2564
2565 static void
2566 ev_view_zoom_for_size_continuous (EvView *view,
2567                                   int     width,
2568                                   int     height,
2569                                   int     vsb_width,
2570                                   int     hsb_height)
2571 {
2572         int doc_width, doc_height;
2573         GtkBorder border;
2574         gdouble scale;
2575
2576         ev_page_cache_get_max_width (view->page_cache,
2577                                      view->rotation,
2578                                      1.0,
2579                                      &doc_width);
2580         ev_page_cache_get_max_height (view->page_cache,
2581                                       view->rotation,
2582                                       1.0,
2583                                       &doc_height);
2584         compute_border (view, doc_width, doc_height, &border);
2585
2586         width -= (border.left + border.right + 2 * view->spacing);
2587         height -= (border.top + border.bottom + 2 * view->spacing - 1);
2588
2589         /* FIXME: We really need to calculate the overall height here, not the
2590          * page height.  We assume there's always a vertical scrollbar for
2591          * now.  We need to fix this. */
2592         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
2593                 scale = zoom_for_size_fit_width (doc_width, doc_height, width - vsb_width, height, 0);
2594         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
2595                 scale = zoom_for_size_best_fit (doc_width, doc_height, width - vsb_width, height, 0, hsb_height);
2596         else
2597                 g_assert_not_reached ();
2598
2599         ev_view_set_zoom (view, scale, FALSE);
2600 }
2601
2602 static void
2603 ev_view_zoom_for_size_dual_page (EvView *view,
2604                                  int     width,
2605                                  int     height,
2606                                  int     vsb_width,
2607                                  int     hsb_height)
2608 {
2609         GtkBorder border;
2610         gint doc_width, doc_height;
2611         gdouble scale;
2612         gint other_page;
2613
2614         other_page = view->current_page ^ 1;
2615
2616         /* Find the largest of the two. */
2617         ev_page_cache_get_size (view->page_cache,
2618                                 view->current_page,
2619                                 view->rotation,
2620                                 1.0,
2621                                 &doc_width, &doc_height);
2622
2623         if (other_page < ev_page_cache_get_n_pages (view->page_cache)) {
2624                 gint width_2, height_2;
2625                 ev_page_cache_get_size (view->page_cache,
2626                                         other_page,
2627                                         view->rotation,
2628                                         1.0,
2629                                         &width_2, &height_2);
2630                 if (width_2 > doc_width)
2631                         doc_width = width_2;
2632                 if (height_2 > doc_height)
2633                         doc_height = height_2;
2634         }
2635         compute_border (view, doc_width, doc_height, &border);
2636
2637         doc_width = doc_width * 2;
2638         width -= ((border.left + border.right)* 2 + 3 * view->spacing);
2639         height -= (border.top + border.bottom + 2 * view->spacing);
2640
2641         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
2642                 scale = zoom_for_size_fit_width (doc_width, doc_height, width, height, vsb_width);
2643         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
2644                 scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, vsb_width, hsb_height);
2645         else
2646                 g_assert_not_reached ();
2647
2648         ev_view_set_zoom (view, scale, FALSE);
2649 }
2650
2651 static void
2652 ev_view_zoom_for_size_single_page (EvView *view,
2653                                    int     width,
2654                                    int     height,
2655                                    int     vsb_width,
2656                                    int     hsb_height)
2657 {
2658         int doc_width, doc_height;
2659         GtkBorder border;
2660         gdouble scale;
2661
2662         ev_page_cache_get_size (view->page_cache,
2663                                 view->current_page,
2664                                 view->rotation,
2665                                 1.0,
2666                                 &doc_width,
2667                                 &doc_height);
2668         /* Get an approximate border */
2669         compute_border (view, width, height, &border);
2670
2671         width -= (border.left + border.right + 2 * view->spacing);
2672         height -= (border.top + border.bottom + 2 * view->spacing);
2673
2674         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
2675                 scale = zoom_for_size_fit_width (doc_width, doc_height, width, height, vsb_width);
2676         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
2677                 scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, vsb_width, hsb_height);
2678         else
2679                 g_assert_not_reached ();
2680
2681         ev_view_set_zoom (view, scale, FALSE);
2682 }
2683
2684 void
2685 ev_view_set_zoom_for_size (EvView *view,
2686                            int     width,
2687                            int     height,
2688                            int     vsb_width,
2689                            int     hsb_height)
2690 {
2691         g_return_if_fail (view->sizing_mode == EV_SIZING_FIT_WIDTH ||
2692                           view->sizing_mode == EV_SIZING_BEST_FIT);
2693         g_return_if_fail (width >= 0);
2694         g_return_if_fail (height >= 0);
2695
2696         if (view->document == NULL)
2697                 return;
2698
2699         if (view->presentation)
2700                 ev_view_zoom_for_size_presentation (view, width, height);
2701         else if (view->continuous && view->dual_page)
2702                 ev_view_zoom_for_size_continuous_and_dual_page (view, width, height, vsb_width, hsb_height);
2703         else if (view->continuous)
2704                 ev_view_zoom_for_size_continuous (view, width, height, vsb_width, hsb_height);
2705         else if (view->dual_page)
2706                 ev_view_zoom_for_size_dual_page (view, width, height, vsb_width, hsb_height);
2707         else
2708                 ev_view_zoom_for_size_single_page (view, width, height, vsb_width, hsb_height);
2709 }
2710
2711 /*** Status text messages ***/
2712
2713 const char *
2714 ev_view_get_status (EvView *view)
2715 {
2716         g_return_val_if_fail (EV_IS_VIEW (view), NULL);
2717
2718         return view->status;
2719 }
2720
2721 static void
2722 ev_view_set_status (EvView *view, const char *message)
2723 {
2724         g_return_if_fail (EV_IS_VIEW (view));
2725
2726         if (message != view->status) {
2727                 g_free (view->status);
2728                 view->status = g_strdup (message);
2729                 g_object_notify (G_OBJECT (view), "status");
2730         }
2731 }
2732
2733 static void
2734 update_find_status_message (EvView *view)
2735 {
2736         char *message;
2737
2738         if (view->current_page == view->find_page) {
2739                 int results;
2740
2741                 results = ev_document_find_get_n_results
2742                                 (EV_DOCUMENT_FIND (view->document),
2743                                  view->current_page);
2744                 /* TRANS: Sometimes this could be better translated as
2745                    "%d hit(s) on this page".  Therefore this string
2746                    contains plural cases. */
2747                 message = g_strdup_printf (ngettext ("%d found on this page",
2748                                                      "%d found on this page",
2749                                                      results),
2750                                            results);
2751         } else {
2752                 double percent;
2753
2754                 percent = ev_document_find_get_progress
2755                                 (EV_DOCUMENT_FIND (view->document));
2756                 if (percent >= (1.0 - 1e-10)) {
2757                         message = g_strdup (_("Not found"));
2758                 } else {
2759                         message = g_strdup_printf (_("%3d%% remaining to search"),
2760                                                    (int) ((1.0 - percent) * 100));
2761                 }
2762
2763         }
2764         ev_view_set_find_status (view, message);
2765         g_free (message);
2766 }
2767
2768 const char *
2769 ev_view_get_find_status (EvView *view)
2770 {
2771         g_return_val_if_fail (EV_IS_VIEW (view), NULL);
2772
2773         return view->find_status;
2774 }
2775
2776 static void
2777 ev_view_set_find_status (EvView *view, const char *message)
2778 {
2779         g_return_if_fail (EV_IS_VIEW (view));
2780
2781         g_free (view->find_status);
2782         view->find_status = g_strdup (message);
2783         g_object_notify (G_OBJECT (view), "find-status");
2784 }
2785
2786 /*** Find ***/
2787
2788 static void
2789 jump_to_find_result (EvView *view)
2790 {
2791         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
2792         EvRectangle rect;
2793         GdkRectangle view_rect;
2794         int n_results;
2795         int page = view->find_page;
2796
2797         n_results = ev_document_find_get_n_results (find, page);
2798
2799         if (n_results > 0  && view->find_result < n_results) {
2800                 ev_document_find_get_result
2801                         (find, page, view->find_result, &rect);
2802
2803                 doc_rect_to_view_rect (view, page, &rect, &view_rect);
2804                 ensure_rectangle_is_visible (view, &view_rect);
2805         }
2806 }
2807
2808 static void
2809 jump_to_find_page (EvView *view, EvViewFindDirection direction)
2810 {
2811         int n_pages, i;
2812
2813         n_pages = ev_page_cache_get_n_pages (view->page_cache);
2814
2815         for (i = 0; i < n_pages; i++) {
2816                 int has_results;
2817                 int page;
2818
2819                 if (direction == EV_VIEW_FIND_NEXT)
2820                         page = view->find_page + i;
2821                 else
2822                         page = view->find_page - i;
2823
2824
2825                 if (page >= n_pages) {
2826                         page = page - n_pages;
2827                 }
2828                 if (page < 0)
2829                         page = page + n_pages;
2830
2831                 has_results = ev_document_find_page_has_results
2832                                 (EV_DOCUMENT_FIND (view->document), page);
2833                 if (has_results == -1) {
2834                         view->find_page = page;
2835                         break;
2836                 } else if (has_results == 1) {
2837                         ev_page_cache_set_current_page (view->page_cache, page);
2838                         break;
2839                 }
2840         }
2841 }
2842
2843 gboolean
2844 ev_view_can_find_next (EvView *view)
2845 {
2846         int n_results = 0;
2847
2848         if (EV_IS_DOCUMENT_FIND (view->document)) {
2849                 EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
2850
2851                 n_results = ev_document_find_get_n_results (find, view->current_page);
2852         }
2853
2854         return n_results > 0;
2855 }
2856
2857 void
2858 ev_view_find_next (EvView *view)
2859 {
2860         int n_results, n_pages;
2861         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
2862
2863         n_results = ev_document_find_get_n_results (find, view->current_page);
2864
2865         n_pages = ev_page_cache_get_n_pages (view->page_cache);
2866
2867         view->find_result++;
2868
2869         if (view->find_result >= n_results) {
2870
2871                 view->find_result = 0;
2872                 view->find_page++;
2873                 if (view->find_page >= n_pages) {
2874                         view->find_page = 0;
2875                 }
2876
2877                 jump_to_find_page (view, EV_VIEW_FIND_NEXT);
2878                 jump_to_find_result (view);
2879         } else {
2880                 jump_to_find_result (view);
2881                 gtk_widget_queue_draw (GTK_WIDGET (view));
2882         }
2883 }
2884
2885 void
2886 ev_view_find_previous (EvView *view)
2887 {
2888         int n_results, n_pages;
2889         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
2890         EvPageCache *page_cache;
2891
2892         page_cache = ev_page_cache_get (view->document);
2893
2894         n_results = ev_document_find_get_n_results (find, view->current_page);
2895
2896         n_pages = ev_page_cache_get_n_pages (page_cache);
2897
2898         view->find_result--;
2899
2900         if (view->find_result < 0) {
2901
2902                 view->find_page--;
2903                 if (view->find_page < 0) {
2904                         view->find_page = n_pages - 1;
2905                 }
2906
2907                 jump_to_find_page (view, EV_VIEW_FIND_PREV);
2908                 view->find_result = ev_document_find_get_n_results (find, view->current_page) - 1;
2909                 jump_to_find_result (view);
2910         } else {
2911                 jump_to_find_result (view);
2912                 gtk_widget_queue_draw (GTK_WIDGET (view));
2913         }
2914 }
2915
2916 /*** Selections ***/
2917
2918 /* compute_new_selection_rect/text calculates the area currently selected by
2919  * view_rect.  each handles a different mode;
2920  */
2921 static GList *
2922 compute_new_selection_rect (EvView       *view,
2923                             GdkPoint     *start,
2924                             GdkPoint     *stop)
2925 {
2926         GdkRectangle view_rect;
2927         int n_pages, i;
2928         GList *list = NULL;
2929
2930         g_assert (view->selection_mode == EV_VIEW_SELECTION_RECTANGLE);
2931
2932         view_rect.x = MIN (start->x, stop->x);
2933         view_rect.y = MIN (start->y, stop->y);
2934         view_rect.width = MAX (start->x, stop->x) - view_rect.x;
2935         view_rect.width = MAX (start->y, stop->y) - view_rect.y;
2936
2937         n_pages = ev_page_cache_get_n_pages (view->page_cache);
2938
2939         for (i = 0; i < n_pages; i++) {
2940                 GdkRectangle page_area;
2941                 GtkBorder border;
2942
2943                 if (get_page_extents (view, i, &page_area, &border)) {
2944                         GdkRectangle overlap;
2945
2946                         if (gdk_rectangle_intersect (&page_area, &view_rect, &overlap)) {
2947                                 EvViewSelection *selection;
2948
2949                                 selection = g_new0 (EvViewSelection, 1);
2950                                 selection->page = i;
2951                                 view_rect_to_doc_rect (view, &overlap, &page_area,
2952                                                        &(selection->rect));
2953
2954                                 list = g_list_append (list, selection);
2955                         }
2956                 }
2957         }
2958
2959         return list;
2960 }
2961
2962 static gboolean
2963 gdk_rectangle_point_in (GdkRectangle *rectangle,
2964                         GdkPoint     *point)
2965 {
2966         return rectangle->x <= point->x &&
2967                 rectangle->y <= point->y &&
2968                 point->x < rectangle->x + rectangle->width &&
2969                 point->y < rectangle->y + rectangle->height;
2970 }
2971
2972 static GList *
2973 compute_new_selection_text (EvView   *view,
2974                             GdkPoint *start,
2975                             GdkPoint *stop)
2976 {
2977         int n_pages, i, first, last;
2978         GList *list = NULL;
2979         EvViewSelection *selection;
2980         gint width, height;
2981         int start_page, end_page;
2982
2983         g_assert (view->selection_mode == EV_VIEW_SELECTION_TEXT);
2984
2985         n_pages = ev_page_cache_get_n_pages (view->page_cache);
2986
2987         /* First figure out the range of pages the selection
2988          * affects. */
2989         first = n_pages;
2990         last = 0;
2991         if (view->continuous) {
2992                 start_page = 0;
2993                 end_page = n_pages;
2994         } else if (view->dual_page) {
2995                 start_page = view->start_page;
2996                 end_page = view->end_page + 1;
2997         } else {
2998                 start_page = view->current_page;
2999                 end_page = view->current_page + 1;
3000         }
3001
3002         for (i = start_page; i < end_page; i++) {
3003                 GdkRectangle page_area;
3004                 GtkBorder border;
3005
3006                 get_page_extents (view, i, &page_area, &border);
3007                 if (gdk_rectangle_point_in (&page_area, start) ||
3008                     gdk_rectangle_point_in (&page_area, stop)) {
3009                         if (first == n_pages)
3010                                 first = i;
3011                         last = i;
3012                 }
3013
3014         }
3015
3016
3017
3018         /* Now create a list of EvViewSelection's for the affected
3019          * pages.  This could be an empty list, a list of just one
3020          * page or a number of pages.*/
3021         for (i = first; i < last + 1; i++) {
3022                 GdkRectangle page_area;
3023                 GtkBorder border;
3024                 GdkPoint *point;
3025
3026                 ev_page_cache_get_size (view->page_cache, i,
3027                                         view->rotation,
3028                                         1.0, &width, &height);
3029
3030                 selection = g_new0 (EvViewSelection, 1);
3031                 selection->page = i;
3032                 selection->rect.x1 = selection->rect.y1 = 0;
3033                 selection->rect.x2 = width;
3034                 selection->rect.y2 = height;
3035
3036                 get_page_extents (view, i, &page_area, &border);
3037
3038                 if (gdk_rectangle_point_in (&page_area, start))
3039                         point = start;
3040                 else
3041                         point = stop;
3042
3043                 if (i == first)
3044                         view_point_to_doc_point (view, point, &page_area,
3045                                                  &selection->rect.x1,
3046                                                  &selection->rect.y1);
3047
3048                 /* If the selection is contained within just one page,
3049                  * make sure we don't write 'start' into both points
3050                  * in selection->rect. */
3051                 if (first == last)
3052                         point = stop;
3053
3054                 if (i == last)
3055                         view_point_to_doc_point (view, point, &page_area,
3056                                                  &selection->rect.x2,
3057                                                  &selection->rect.y2);
3058
3059                 list = g_list_append (list, selection);
3060         }
3061
3062         return list;
3063 }
3064
3065 /* This function takes the newly calculated list, and figures out which regions
3066  * have changed.  It then queues a redraw approporiately.
3067  */
3068 static void
3069 merge_selection_region (EvView *view,
3070                         GList  *new_list)
3071 {
3072         GList *old_list;
3073         GList *new_list_ptr, *old_list_ptr;
3074
3075         /* Update the selection */
3076         old_list = ev_pixbuf_cache_get_selection_list (view->pixbuf_cache);
3077         g_list_foreach (view->selection_info.selections, (GFunc)selection_free, NULL);
3078         view->selection_info.selections = new_list;
3079         ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, new_list);
3080
3081         new_list_ptr = new_list;
3082         old_list_ptr = old_list;
3083
3084         while (new_list_ptr || old_list_ptr) {
3085                 EvViewSelection *old_sel, *new_sel;
3086                 int cur_page;
3087                 GdkRegion *region = NULL;
3088
3089                 new_sel = (new_list_ptr) ? (new_list_ptr->data) : NULL;
3090                 old_sel = (old_list_ptr) ? (old_list_ptr->data) : NULL;
3091
3092                 /* Assume that the lists are in order, and we run through them
3093                  * comparing them, one page at a time.  We come out with the
3094                  * first page we see. */
3095                 if (new_sel && old_sel) {
3096                         if (new_sel->page < old_sel->page) {
3097                                 new_list_ptr = new_list_ptr->next;
3098                                 old_sel = NULL;
3099                         } else if (new_sel->page > old_sel->page) {
3100                                 old_list_ptr = old_list_ptr->next;
3101                                 new_sel = NULL;
3102                         } else {
3103                                 new_list_ptr = new_list_ptr->next;
3104                                 old_list_ptr = old_list_ptr->next;
3105                         }
3106                 } else if (new_sel) {
3107                         new_list_ptr = new_list_ptr->next;
3108                 } else if (old_sel) {
3109                         old_list_ptr = old_list_ptr->next;
3110                 }
3111
3112                 g_assert (new_sel || old_sel);
3113
3114                 /* is the page we're looking at on the screen?*/
3115                 cur_page = new_sel ? new_sel->page : old_sel->page;
3116                 if (cur_page < view->start_page || cur_page > view->end_page)
3117                         continue;
3118
3119                 /* seed the cache with a new page.  We are going to need the new
3120                  * region too. */
3121                 if (new_sel) {
3122                         GdkRegion *tmp_region = NULL;
3123                         ev_pixbuf_cache_get_selection_pixbuf (view->pixbuf_cache,
3124                                                               cur_page,
3125                                                               view->scale,
3126                                                               &tmp_region);
3127                         if (tmp_region) {
3128                                 new_sel->covered_region = gdk_region_copy (tmp_region);
3129                         }
3130                 }
3131
3132                 /* Now we figure out what needs redrawing */
3133                 if (old_sel && new_sel) {
3134                         if (old_sel->covered_region &&
3135                             new_sel->covered_region) {
3136                                 /* We only want to redraw the areas that have
3137                                  * changed, so we xor the old and new regions
3138                                  * and redraw if it's different */
3139                                 region = gdk_region_copy (old_sel->covered_region);
3140                                 gdk_region_xor (region, new_sel->covered_region);
3141                                 if (gdk_region_empty (region)) {
3142                                         gdk_region_destroy (region);
3143                                         region = NULL;
3144                                 }
3145                         } else if (old_sel->covered_region) {
3146                                 region = gdk_region_copy (old_sel->covered_region);
3147                         } else if (new_sel->covered_region) {
3148                                 region = gdk_region_copy (new_sel->covered_region);
3149                         }
3150                 } else if (old_sel && !new_sel) {
3151                         if (old_sel->covered_region && !gdk_region_empty (old_sel->covered_region)) {
3152                                 region = gdk_region_copy (old_sel->covered_region);
3153                         }
3154                 } else if (!old_sel && new_sel) {
3155                         if (new_sel->covered_region && !gdk_region_empty (new_sel->covered_region)) {
3156                                 region = gdk_region_copy (new_sel->covered_region);
3157                         }
3158                 } else {
3159                         g_assert_not_reached ();
3160                 }
3161
3162                 /* Redraw the damaged region! */
3163                 if (region) {
3164                         GdkRectangle page_area;
3165                         GtkBorder border;
3166
3167                         get_page_extents (view, cur_page, &page_area, &border);
3168                         gdk_region_offset (region,
3169                                            page_area.x + border.left - view->scroll_x,
3170                                            page_area.y + border.top - view->scroll_y);
3171                         gdk_window_invalidate_region (GTK_WIDGET (view)->window, region, TRUE);
3172                         gdk_region_destroy (region);
3173                 }
3174         }
3175
3176         /* Free the old list, now that we're done with it. */
3177         g_list_foreach (old_list, (GFunc) selection_free, NULL);
3178 }
3179
3180 static void
3181 compute_selections (EvView   *view,
3182                     GdkPoint *start,
3183                     GdkPoint *stop)
3184 {
3185         GList *list;
3186
3187         if (view->selection_mode == EV_VIEW_SELECTION_RECTANGLE)
3188                 list = compute_new_selection_rect (view, start, stop);
3189         else
3190                 list = compute_new_selection_text (view, start, stop);
3191         merge_selection_region (view, list);
3192 }
3193
3194 /* Free's the selection.  It's up to the caller to queue redraws if needed.
3195  */
3196 static void
3197 selection_free (EvViewSelection *selection)
3198 {
3199         if (selection->covered_region)
3200                 gdk_region_destroy (selection->covered_region);
3201         g_free (selection);
3202 }
3203
3204 static void
3205 clear_selection (EvView *view)
3206 {
3207         g_list_foreach (view->selection_info.selections, (GFunc)selection_free, NULL);
3208         view->selection_info.selections = NULL;
3209         view->selection_info.in_selection = FALSE;
3210 }
3211
3212
3213 void
3214 ev_view_select_all (EvView *view)
3215 {
3216         int n_pages, i;
3217
3218         clear_selection (view);
3219
3220         n_pages = ev_page_cache_get_n_pages (view->page_cache);
3221         for (i = 0; i < n_pages; i++) {
3222                 int width, height;
3223                 EvViewSelection *selection;
3224
3225                 ev_page_cache_get_size (view->page_cache,
3226                                         i,
3227                                         view->rotation,
3228                                         1.0, &width, &height);
3229
3230                 selection = g_new0 (EvViewSelection, 1);
3231                 selection->page = i;
3232                 selection->rect.x1 = selection->rect.y1 = 0;
3233                 selection->rect.x2 = width;
3234                 selection->rect.y2 = height;
3235
3236                 view->selection_info.selections = g_list_append (view->selection_info.selections, selection);
3237         }
3238
3239         ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, view->selection_info.selections);
3240         gtk_widget_queue_draw (GTK_WIDGET (view));
3241 }
3242
3243 static char *
3244 get_selected_text (EvView *ev_view)
3245 {
3246         GString *text;
3247         GList *l;
3248
3249         text = g_string_new (NULL);
3250
3251         ev_document_doc_mutex_lock ();
3252
3253         for (l = ev_view->selection_info.selections; l != NULL; l = l->next) {
3254                 EvViewSelection *selection = (EvViewSelection *)l->data;
3255                 char *tmp;
3256
3257                 tmp = ev_document_get_text (ev_view->document,
3258                                             selection->page,
3259                                             &selection->rect);
3260                 g_string_append (text, tmp);
3261                 g_free (tmp);
3262         }
3263
3264         ev_document_doc_mutex_unlock ();
3265
3266         return g_string_free (text, FALSE);
3267 }
3268
3269 void
3270 ev_view_copy (EvView *ev_view)
3271 {
3272         GtkClipboard *clipboard;
3273         char *text;
3274
3275         if (!ev_document_can_get_text (ev_view->document)) {
3276                 return;
3277         }
3278
3279         text = get_selected_text (ev_view);
3280         clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view),
3281                                               GDK_SELECTION_CLIPBOARD);
3282         gtk_clipboard_set_text (clipboard, text, -1);
3283         g_free (text);
3284 }
3285
3286 static void
3287 ev_view_primary_get_cb (GtkClipboard     *clipboard,
3288                         GtkSelectionData *selection_data,
3289                         guint             info,
3290                         gpointer          data)
3291 {
3292         EvView *ev_view = EV_VIEW (data);
3293         char *text;
3294
3295         if (!ev_document_can_get_text (ev_view->document)) {
3296                 return;
3297         }
3298
3299         text = get_selected_text (ev_view);
3300         gtk_selection_data_set_text (selection_data, text, -1);
3301         g_free (text);
3302 }
3303
3304 static void
3305 ev_view_primary_clear_cb (GtkClipboard *clipboard,
3306                           gpointer      data)
3307 {
3308         EvView *view = EV_VIEW (data);
3309
3310         clear_selection (view);
3311 }
3312
3313 static void
3314 ev_view_update_primary_selection (EvView *ev_view)
3315 {
3316         GtkClipboard *clipboard;
3317
3318         clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view),
3319                                               GDK_SELECTION_PRIMARY);
3320
3321         if (ev_view->selection_info.selections) {
3322                 if (!gtk_clipboard_set_with_owner (clipboard,
3323                                                    targets,
3324                                                    G_N_ELEMENTS (targets),
3325                                                    ev_view_primary_get_cb,
3326                                                    ev_view_primary_clear_cb,
3327                                                    G_OBJECT (ev_view)))
3328                         ev_view_primary_clear_cb (clipboard, ev_view);
3329         } else {
3330                 if (gtk_clipboard_get_owner (clipboard) == G_OBJECT (ev_view))
3331                         gtk_clipboard_clear (clipboard);
3332         }
3333 }
3334
3335 /*** Cursor operations ***/
3336
3337 static GdkCursor *
3338 ev_view_create_invisible_cursor(void)
3339 {
3340        GdkBitmap *empty;
3341        GdkColor black = { 0, 0, 0, 0 };
3342        static char bits[] = { 0x00 };
3343
3344        empty = gdk_bitmap_create_from_data (NULL, bits, 1, 1);
3345
3346        return gdk_cursor_new_from_pixmap (empty, empty, &black, &black, 0, 0);
3347 }
3348
3349 static void
3350 ev_view_set_cursor (EvView *view, EvViewCursor new_cursor)
3351 {
3352         GdkCursor *cursor = NULL;
3353         GdkDisplay *display;
3354         GtkWidget *widget;
3355
3356         if (view->cursor == new_cursor) {
3357                 return;
3358         }
3359
3360         widget = gtk_widget_get_toplevel (GTK_WIDGET (view));
3361         display = gtk_widget_get_display (widget);
3362         view->cursor = new_cursor;
3363
3364         switch (new_cursor) {
3365                 case EV_VIEW_CURSOR_NORMAL:
3366                         gdk_window_set_cursor (widget->window, NULL);
3367                         break;
3368                 case EV_VIEW_CURSOR_IBEAM:
3369                         cursor = gdk_cursor_new_for_display (display, GDK_XTERM);
3370                         break;
3371                 case EV_VIEW_CURSOR_LINK:
3372                         cursor = gdk_cursor_new_for_display (display, GDK_HAND2);
3373                         break;
3374                 case EV_VIEW_CURSOR_WAIT:
3375                         cursor = gdk_cursor_new_for_display (display, GDK_WATCH);
3376                         break;
3377                 case EV_VIEW_CURSOR_HIDDEN:
3378                         cursor = ev_view_create_invisible_cursor ();
3379                         break;
3380                 case EV_VIEW_CURSOR_DRAG:
3381                         cursor = gdk_cursor_new_for_display (display, GDK_FLEUR);
3382                         break;
3383         }
3384
3385         if (cursor) {
3386                 gdk_window_set_cursor (widget->window, cursor);
3387                 gdk_cursor_unref (cursor);
3388                 gdk_flush();
3389         }
3390 }
3391
3392 void
3393 ev_view_hide_cursor (EvView *view)
3394 {
3395        ev_view_set_cursor (view, EV_VIEW_CURSOR_HIDDEN);
3396 }
3397
3398 void
3399 ev_view_show_cursor (EvView *view)
3400 {
3401        ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
3402 }
3403
3404 /*** Enum description for usage in signal ***/
3405
3406 GType
3407 ev_sizing_mode_get_type (void)
3408 {
3409   static GType etype = 0;
3410   if (etype == 0) {
3411     static const GEnumValue values[] = {
3412       { EV_SIZING_FIT_WIDTH, "EV_SIZING_FIT_WIDTH", "fit-width" },
3413       { EV_SIZING_BEST_FIT, "EV_SIZING_BEST_FIT", "best-fit" },
3414       { EV_SIZING_FREE, "EV_SIZING_FREE", "free" },
3415       { 0, NULL, NULL }
3416     };
3417     etype = g_enum_register_static ("EvSizingMode", values);
3418   }
3419   return etype;
3420 }
3421