gdkRectangleIntersect(src1, src2)
gdkRectangleUnion(src1, src2)
gdkRegionNew()
gdkRegionPolygon(points, fill.rule)
gdkRegionCopy(object)
gdkRegionRectangle(rectangle)
gdkRegionGetClipbox(object)
gdkRegionGetRectangles(object)
gdkRegionEmpty(object)
gdkRegionEqual(object, region2)
gdkRegionRectEqual(object, rectangle)
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)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.GdkPointGdkPoint is a transparent-type. xyGdkRectangleGdkRectangle is a transparent-type. xywidthheightGdkRegionGdkSpanx, y and ending before x + width, y.
GdkSpan is a transparent-type. xywidthGdkFillRuleGdkRegion from a polygon.
The fill rule is only relevant for polygons which overlap themselves. even-odd-rulewinding-ruleGdkOverlapTypegdkRegionRectIn.