[571096] Fixed rounding issue in modulo canvas

The modulo canvas had to unscale the contents' extend with the zoom
factor. This resulted in rounding errors leading to larger canvases then
needed. This fix now uses the unscaled contents for calculating the
required size.

https://bugs.eclipse.org/bugs/show_bug.cgi?id=571096
Change-Id: I01a9851656cf2bbeb6d6d78934e88fe39187b2ad
Signed-off-by: Alois Zoitl <alois.zoitl@gmx.at>
1 file changed