8083b8ef6a
2005-12-24 Matthias Clasen <mclasen@redhat.com> * gdk/gdkregion-generic.c: * gdk/gdkpolyreg-generic.c: * gdk/gdkregion.h: * gdk/gdkrectangle.c: Inline docs, use g_assert(), avoid extra allocation for rectangular regions.
110 lines
3.6 KiB
C
110 lines
3.6 KiB
C
/* GDK - The GIMP Drawing Kit
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* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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/*
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* Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
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* file for a list of people on the GTK+ Team. See the ChangeLog
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* files for a list of changes. These files are distributed with
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* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
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*/
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#ifndef __GDK_REGION_H__
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#define __GDK_REGION_H__
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#include <gdk/gdktypes.h>
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G_BEGIN_DECLS
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/* GC fill rule for polygons
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* EvenOddRule
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* WindingRule
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*/
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typedef enum
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{
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GDK_EVEN_ODD_RULE,
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GDK_WINDING_RULE
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} GdkFillRule;
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/* Types of overlapping between a rectangle and a region
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* GDK_OVERLAP_RECTANGLE_IN: rectangle is in region
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* GDK_OVERLAP_RECTANGLE_OUT: rectangle in not in region
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* GDK_OVERLAP_RECTANGLE_PART: rectangle in partially in region
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*/
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typedef enum
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{
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GDK_OVERLAP_RECTANGLE_IN,
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GDK_OVERLAP_RECTANGLE_OUT,
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GDK_OVERLAP_RECTANGLE_PART
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} GdkOverlapType;
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typedef void (*GdkSpanFunc) (GdkSpan *span,
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gpointer data);
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GdkRegion *gdk_region_new (void);
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GdkRegion *gdk_region_polygon (GdkPoint *points,
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gint npoints,
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GdkFillRule fill_rule);
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GdkRegion *gdk_region_copy (GdkRegion *region);
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GdkRegion *gdk_region_rectangle (GdkRectangle *rectangle);
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void gdk_region_destroy (GdkRegion *region);
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void gdk_region_get_clipbox (GdkRegion *region,
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GdkRectangle *rectangle);
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void gdk_region_get_rectangles (GdkRegion *region,
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GdkRectangle **rectangles,
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gint *n_rectangles);
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gboolean gdk_region_empty (GdkRegion *region);
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gboolean gdk_region_equal (GdkRegion *region1,
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GdkRegion *region2);
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gboolean gdk_region_point_in (GdkRegion *region,
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int x,
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int y);
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GdkOverlapType gdk_region_rect_in (GdkRegion *region,
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GdkRectangle *rectangle);
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void gdk_region_offset (GdkRegion *region,
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gint dx,
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gint dy);
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void gdk_region_shrink (GdkRegion *region,
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gint dx,
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gint dy);
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void gdk_region_union_with_rect (GdkRegion *region,
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GdkRectangle *rect);
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void gdk_region_intersect (GdkRegion *source1,
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GdkRegion *source2);
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void gdk_region_union (GdkRegion *source1,
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GdkRegion *source2);
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void gdk_region_subtract (GdkRegion *source1,
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GdkRegion *source2);
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void gdk_region_xor (GdkRegion *source1,
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GdkRegion *source2);
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void gdk_region_spans_intersect_foreach (GdkRegion *region,
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GdkSpan *spans,
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int n_spans,
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gboolean sorted,
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GdkSpanFunc function,
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gpointer data);
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G_END_DECLS
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#endif /* __GDK_REGION_H__ */
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