PintaProject/Pinta — pull request #48 by don-mccomb (2012-12-04 13:29:18+00:00)
Title: [Fixes Bug #1084213] Fix screen repaint of zoomed image after undoing any SimpleHistoryItem

Adjusted the rectangle in DocumentWorkspace::Invalidate(Rectangle) when the zoom is not 100%. This was done to account for rounding errors when rendering a zoomed (in or out) image.