gdkregion.h

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#ifndef __GDK_REGION_H__
#define __GDK_REGION_H__

#include <gdk/gdktypes.h>

#ifdef __cplusplus
extern "C" {
#endif                          /* __cplusplus */

/* GC fill rule for polygons
 *  EvenOddRule
 *  WindingRule
 */
   typedef enum {
      GDK_EVEN_ODD_RULE,
      GDK_WINDING_RULE
   } GdkFillRule;

/* 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;

   struct _GdkRegion {
      gpointer user_data;
   };

   GdkRegion *gdk_region_new(void);
   void gdk_region_destroy(GdkRegion * region);

   void gdk_region_get_clipbox(GdkRegion * region,
                               GdkRectangle * rectangle);

   gboolean gdk_region_empty(GdkRegion * region);
   gboolean gdk_region_equal(GdkRegion * region1, GdkRegion * region2);
   gboolean gdk_region_point_in(GdkRegion * region, int x, int y);
   GdkOverlapType gdk_region_rect_in(GdkRegion * region,
                                     GdkRectangle * rect);

   GdkRegion *gdk_region_polygon(GdkPoint * points,
                                 gint npoints, GdkFillRule fill_rule);

   void gdk_region_offset(GdkRegion * region, gint dx, gint dy);
   void gdk_region_shrink(GdkRegion * region, gint dx, gint dy);

   GdkRegion *gdk_region_union_with_rect(GdkRegion * region,
                                         GdkRectangle * rect);
   GdkRegion *gdk_regions_intersect(GdkRegion * source1,
                                    GdkRegion * source2);
   GdkRegion *gdk_regions_union(GdkRegion * source1, GdkRegion * source2);
   GdkRegion *gdk_regions_subtract(GdkRegion * source1,
                                   GdkRegion * source2);
   GdkRegion *gdk_regions_xor(GdkRegion * source1, GdkRegion * source2);


#ifdef __cplusplus
}
#endif                          /* __cplusplus */
#endif                          /* __GDK_REGION_H__ */