/* 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/. */ #if defined(GTK_DISABLE_SINGLE_INCLUDES) && !defined (__GDK_H_INSIDE__) && !defined (GDK_COMPILATION) #error "Only can be included directly." #endif #ifndef __GDK_REGION_H__ #define __GDK_REGION_H__ #include G_BEGIN_DECLS /* 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 (const GdkPoint *points, gint n_points, GdkFillRule fill_rule); 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); gboolean gdk_region_rect_equal (const GdkRegion *region1, const GdkRectangle *rectangle); 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); void gdk_region_shrink (GdkRegion *region, gint dx, gint dy); 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); void gdk_region_spans_intersect_foreach (GdkRegion *region, const GdkSpan *spans, int n_spans, gboolean sorted, GdkSpanFunc function, gpointer data); G_END_DECLS #endif /* __GDK_REGION_H__ */