ImageViewer: No interpolation when zooming in
ImageViewer: No interpolation when zooming in

The imageViewer currently always renders the images smooth/interpolated.
When loading an image in an IDE and zooming in, I usually do that in
order to examine the details on pixel level. Therefore, I believe that
smoothing/interpolation should be turned off with a scalefactor >= 1.

This patch does that for images and movies. Svg files remain always
smooth.

Change-Id: I327583b1f46132d179a1e0425f146106d962377b
Reviewed-by: Daniel Teske <d8a411aec9a206efedb4d45b75fe8d13f1e2b628@digia.com>

amyvmiwei/qt-creator,farseerri/git_code,AltarBeastiful/qt-creator,Distrotech/qtcreator,kuba1/qtcreator,amyvmiwei/qt-creator,maui-packages/qt-creator,maui-packages/qt-creator,xianian/qt-creator,maui-packages/qt-creator,amyvmiwei/qt-creator,amyvmiwei/qt-creator,maui-packages/qt-creator,farseerri/git_code,Distrotech/qtcreator,danimo/qt-creator,amyvmiwei/qt-creator,xianian/qt-creator,amyvmiwei/qt-creator,AltarBeastiful/qt-creator,martyone/sailfish-qtcreator,martyone/sailfish-qtcreator,kuba1/qtcreator,martyone/sailfish-qtcreator,martyone/sailfish-qtcreator,AltarBeastiful/qt-creator,xianian/qt-creator,AltarBeastiful/qt-creator,AltarBeastiful/qt-creator,maui-packages/qt-creator,Distrotech/qtcreator,danimo/qt-creator,farseerri/git_code,Distrotech/qtcreator,maui-packages/qt-creator,danimo/qt-creator,AltarBeastiful/qt-creator,Distrotech/qtcreator,amyvmiwei/qt-creator,AltarBeastiful/qt-creator,danimo/qt-creator,danimo/qt-creator,xianian/qt-creator,xianian/qt-creator,farseerri/git_code,martyone/sailfish-qtcreator,kuba1/qtcreator,Distrotech/qtcreator,martyone/sailfish-qtcreator,danimo/qt-creator,xianian/qt-creator,farseerri/git_code,danimo/qt-creator,AltarBeastiful/qt-creator,farseerri/git_code,kuba1/qtcreator,kuba1/qtcreator,Distrotech/qtcreator,martyone/sailfish-qtcreator,maui-packages/qt-creator,kuba1/qtcreator,danimo/qt-creator,xianian/qt-creator,martyone/sailfish-qtcreator,kuba1/qtcreator,amyvmiwei/qt-creator,martyone/sailfish-qtcreator,kuba1/qtcreator,farseerri/git_code,kuba1/qtcreator,xianian/qt-creator,xianian/qt-creator,farseerri/git_code,danimo/qt-creator