/src/wrappers/gdk/library/gdk_fill_rule.e

 1indexing
 2	description: "Enum GdkFillRule - The method for determining which pixels are included in a region, when creating a GdkRegion from a polygon. The fill rule is only relevant for polygons which overlap themselves."
 3	copyright: "(C) 2006 Paolo Redaelli "
 4	license: "LGPL v2 or later"
 5	date: "$Date:$"
 6	revision: "$Revision:$"
 7
 8			--	The method for determining which pixels are included in a
 9			--	region, when creating a GdkRegion from a polygon. The fill
10			--	rule is only relevant for polygons which overlap
11			--	themselves.
12
13deferred class GDK_FILL_RULE
14
15inherit ANY undefine is_equal, copy end
16
17feature  {} -- enum
18
19	is_valid_fill_rule (a_rule :INTEGER): BOOLEAN is
20		do
21			Result:=((a_rule = gdk_even_odd_rule) or else
22			         (a_rule = gdk_winding_rule))
23		end
24
25	gdk_even_odd_rule: INTEGER is
26			-- areas which are overlapped an odd number of times are
27			-- included in the region, while areas overlapped an even
28			-- number of times are not.
29		external "C macro use <gdk/gdk.h>"
30		alias "GDK_EVEN_ODD_RULE"
31		end
32
33	gdk_winding_rule: INTEGER is
34			-- overlapping areas are always included.	
35		external "C macro use <gdk/gdk.h>"
36		alias "GDK_WINDING_RULE"
37		end
38
39end