CairoCanvas, added sample for issue 19435

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@40708 4005530d-fff6-0310-9dd1-cebe43e6787f
CairoCanvas, test, normal spacing

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@40709 4005530d-fff6-0310-9dd1-cebe43e6787f