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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;
typedef void (*GdkSpanFunc) (GdkSpan *span,
gpointer data);
GdkRegion *gdk_region_new (void);
GdkRegion *gdk_region_polygon (GdkPoint *points,
gint npoints,
GdkFillRule fill_rule);
GdkRegion *gdk_region_copy (GdkRegion *region);
GdkRegion *gdk_region_rectangle (GdkRectangle *rectangle);
void gdk_region_destroy (GdkRegion *region);
void gdk_region_get_clipbox (GdkRegion *region,
GdkRectangle *rectangle);
void gdk_region_get_rectangles (GdkRegion *region,
GdkRectangle **rectangles,
gint *n_rectangles);
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);
void gdk_region_offset (GdkRegion *region,
gint dx,
gint dy);
void gdk_region_shrink (GdkRegion *region,
gint dx,
gint dy);
void gdk_region_union_with_rect (GdkRegion *region,
GdkRectangle *rect);
void gdk_region_intersect (GdkRegion *source1,
GdkRegion *source2);
void gdk_region_union (GdkRegion *source1,
GdkRegion *source2);
void gdk_region_subtract (GdkRegion *source1,
GdkRegion *source2);
void gdk_region_xor (GdkRegion *source1,
GdkRegion *source2);
void gdk_region_spans_intersect_foreach (GdkRegion *region,
GdkSpan *spans,
int n_spans,
gboolean sorted,
GdkSpanFunc function,
gpointer data);
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* __GDK_REGION_H__ */
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