cairoSurfaceMarkDirtyRectangle: cairoSurfaceMarkDirtyRectangle
Description
Like cairoSurfaceMarkDirty, but drawing has been done only to
the specified rectangle, so that cairo can retain cached contents
for other parts of the surface.Usage
cairoSurfaceMarkDirtyRectangle(surface, x, y, width, height)
Arguments
x
[integer] X coordinate of dirty rectangle
y
[integer] Y coordinate of dirty rectangle
width
[integer] width of dirty rectangle
height
[integer] height of dirty rectangle
Details
Any cached clip set on the surface will be reset by this function,
to make sure that future cairo calls have the clip set that they
expect.