qgis/QGIS — pull request #1734 by strk (2014-12-13 13:39:59+00:00)
Title: Add rotation member to QgsMapCanvasMap, use for handling paint event

Fixes the regression with pre-rendering user feedback for
non-rotated maps. The glitch is still there for rotated maps
but that's not a regression.

See http://hub.qgis.org/issues/11811