gdk-Points-Rectangles-and-Regions: Points, Rectangles and Regions
Description
Simple graphical data typesMethods and Functions
gdkRectangleIntersect(src1, src2)
gdkRectangleUnion(src1, src2)
gdkRegionNew()
gdkRegionPolygon(points, fill.rule)
gdkRegionCopy(object)
gdkRegionRectangle(rectangle)
gdkRegionGetClipbox(object)
gdkRegionGetRectangles(object)
gdkRegionEmpty(object)
gdkRegionEqual(object, region2)
gdkRegionPointIn(object, x, y)
gdkRegionRectIn(object, rect)
gdkRegionOffset(object, dx, dy)
gdkRegionShrink(object, dx, dy)
gdkRegionUnionWithRect(object, rect)
gdkRegionIntersect(object, source2)
gdkRegionUnion(object, source2)
gdkRegionSubtract(object, source2)
gdkRegionXor(object, source2)
gdkRegionSpansIntersectForeach(object, spans, sorted, fun, data)Detailed Description
GDK provides the GdkPoint, GdkRectangle, GdkRegion and GdkSpan data types
for representing pixels and sets of pixels on the screen.
GdkPoint is a simple structure containing an x and y coordinate of a point.
GdkRectangle is a structure holding the position and size of a rectangle.
The intersection of two rectangles can be computed with
gdkRectangleIntersect. To find the union of two rectangles use
gdkRectangleUnion.
GdkRegion is an opaque data type holding a set of arbitrary pixels, and is
usually used for clipping graphical operations (see gdkGCSetClipRegion).
GdkSpan is a structure holding a spanline. A spanline is a horizontal line that
is one pixel wide. It is mainly used when rasterizing other graphics primitives.
It can be intersected to regions by using gdkRegionSpansIntersectForeach.References
http://developer.gnome.org/doc/API/2.0/gdk/gdk-Points-Rectangles-and-Regions.html