[cairo] offsetting a fill image pattern

[Theo Veenker]

Hi,

When filling a shape with an image pattern, is it possible to
control the origin of the image within the shape? For instance
lets say I have a rectangle of size 100x100 at -50,-50. When
filling this with an image pattern the image fill starts at 0,0
which in this case is the center of the rectangle. I like to be
able to offset the fill within the rectangle without changing
the anchor point of the rectangle. Can this be done?

Theo