/* GDK - The GIMP Drawing Kit

 * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald

 *

 * This library is free software; you can redistribute it and/or

 * modify it under the terms of the GNU Lesser General Public

 * License as published by the Free Software Foundation; either

 * version 2 of the License, or (at your option) any later version.

 *

 * This library is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

 * Lesser General Public License for more details.

 *

 * You should have received a copy of the GNU Lesser General Public

 * License along with this library; if not, write to the

 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,

 * Boston, MA 02111-1307, USA.

 */

/*

 * Modified by the GTK+ Team and others 1997-2000.  See the AUTHORS

 * file for a list of people on the GTK+ Team.  See the ChangeLog

 * files for a list of changes.  These files are distributed with

 * GTK+ at ftp://ftp.gtk.org/pub/gtk/.

 */

#ifndef __GDK_REGION_H__

#define __GDK_REGION_H__

#if defined(GTK_DISABLE_SINGLE_INCLUDES) && !defined (__GDK_H_INSIDE__) && !defined (GDK_COMPILATION)

#error "Only <gdk/gdk.h> can be included directly."

#endif

#include <gdk/gdktypes.h>

G_BEGIN_DECLS

#ifndef GDK_DISABLE_DEPRECATED

/* GC fill rule for polygons

 *  EvenOddRule

 *  WindingRule

 */

typedef enum

{

  GDK_EVEN_ODD_RULE,

  GDK_WINDING_RULE

} GdkFillRule;

#endif

/* Types of overlapping between a rectangle and a region

 * GDK_OVERLAP_RECTANGLE_IN: rectangle is in region

 * GDK_OVERLAP_RECTANGLE_OUT: rectangle in not in region

 * GDK_OVERLAP_RECTANGLE_PART: rectangle in partially in region

 */

typedef enum

{

  GDK_OVERLAP_RECTANGLE_IN,

  GDK_OVERLAP_RECTANGLE_OUT,

  GDK_OVERLAP_RECTANGLE_PART

} GdkOverlapType;

#ifndef GDK_DISABLE_DEPRECATED

typedef void (* GdkSpanFunc) (GdkSpan *span,

                              gpointer data);

#endif

GdkRegion    * gdk_region_new             (void);

#ifndef GDK_DISABLE_DEPRECATED

GdkRegion    * gdk_region_polygon         (const GdkPoint     *points,

                                           gint                n_points,

                                           GdkFillRule         fill_rule);

#endif

GdkRegion    * gdk_region_copy            (const GdkRegion    *region);

GdkRegion    * gdk_region_rectangle       (const GdkRectangle *rectangle);

void           gdk_region_destroy         (GdkRegion          *region);

void	       gdk_region_get_clipbox     (const GdkRegion    *region,

                                           GdkRectangle       *rectangle);

void           gdk_region_get_rectangles  (const GdkRegion    *region,

                                           GdkRectangle      **rectangles,

                                           gint               *n_rectangles);

gboolean       gdk_region_empty           (const GdkRegion    *region);

gboolean       gdk_region_equal           (const GdkRegion    *region1,

                                           const GdkRegion    *region2);

#ifndef GDK_DISABLE_DEPRECATED

gboolean       gdk_region_rect_equal      (const GdkRegion    *region,

                                           const GdkRectangle *rectangle);

#endif

gboolean       gdk_region_point_in        (const GdkRegion    *region,

                                           int                 x,

                                           int                 y);

GdkOverlapType gdk_region_rect_in         (const GdkRegion    *region,

                                           const GdkRectangle *rectangle);

void           gdk_region_offset          (GdkRegion          *region,

                                           gint                dx,

                                           gint                dy);

#ifndef GDK_DISABLE_DEPRECATED

void           gdk_region_shrink          (GdkRegion          *region,

                                           gint                dx,

                                           gint                dy);

#endif

void           gdk_region_union_with_rect (GdkRegion          *region,

                                           const GdkRectangle *rect);

void           gdk_region_intersect       (GdkRegion          *source1,

                                           const GdkRegion    *source2);

void           gdk_region_union           (GdkRegion          *source1,

                                           const GdkRegion    *source2);

void           gdk_region_subtract        (GdkRegion          *source1,

                                           const GdkRegion    *source2);

void           gdk_region_xor             (GdkRegion          *source1,

                                           const GdkRegion    *source2);

#ifndef GDK_DISABLE_DEPRECATED

void   gdk_region_spans_intersect_foreach (GdkRegion          *region,

                                           const GdkSpan      *spans,

                                           int                 n_spans,

                                           gboolean            sorted,

                                           GdkSpanFunc         function,

                                           gpointer            data);

#endif

G_END_DECLS

#endif /* __GDK_REGION_H__ */