PDF output has wrong aspect

[PierreRaybaut]

Issue originally submitted here: https://code.google.com/p/guiqwt/issues/detail?id=42

Reported by peter.mpifr.de, Jan 30, 2013

What steps will reproduce the problem?

1. program "simple_widows.py" displays brain.png with correct aspect ratio
2. "Print" command (icon) in "simple_widows.py" creates a PDF with wrong aspect ratio

What is the expected output? What do you see instead?
I expect the same aspect ratio as in the image window

What version of the product are you using? On what operating system?
Python 2.6.6 Qt 4.6.3 PyQt 4.7.3 GUIqwt 2.2.0 GUIdata 1.5.0 on Linux 2.6.32-5-amd64

Please provide any additional information below.
The aspect ratio seems to change between the display in "simple_windows" and the PDF output. The ration changes with the ratio of the page hight and width.

print.pdf