#
#   Python GUI - Pixmap - Generic
#

from GUI import ImageBase

class Pixmap(ImageBase):
    """A Pixmap is an offscreen area that can be used both as a
    destination for drawing and a source of image data for drawing
    in a View or another Pixmap.
    
    Constructor:
        Pixmap(width, height)
    """
    
    def with_canvas(self, proc):
        """Call the given procedure with a canvas suitable for drawing on
        this Pixmap. The canvas is valid only for the duration of the call,
        and should not be retained beyond it."""
        raise NotImplementedError
