/**
* Get a Canvas for drawing. Actual drawing should be synchronized on the instance of
* BufferedCanvas being used.
*
* @return The Canvas instance to draw onto. Returns null if drawing buffers have not been
* initialized a la {@link #resize(int, int)}.
*/
public synchronized Canvas getCanvas() {
if (bgBuffer != null) {
canvas.setBitmap(bgBuffer);
return canvas;
} else {
return null;
}
}