artemp/mapnik — Issue #200: Transparent map background not rendered on Cairo surfaces
Author: artemp
Created: 2011-10-11 16:04:05+00:00
State: open
Labels: Cairo_Renderer

The alpha part of a background colour is ignored on Cairo surfaces. This results for example in a map with a black background if you provide Color('transparent').

The error is in the method start_map_processing, patch has been attached.