When there was no existing configuration, it would get set to pure black
on startup, resulting in a very dark gray Qt Creator. Now it is back to
its old friendly gray as default color.
Also made sure that the default on startup and the color used for
resetting the UI color in the settings are always in sync.
Reviewed-by: Jens Bache-Wiig
There was a flicker problem with the tool bars because of
missing information in the cache key. We added this info
and removed the redundant caching of toolbar gradients.
Done-with: thorbjorn
The sidebar is a diffuse surface. Hence the reflection
does not really make sense there. Additionally, this
allows us to get more unified spacing and we can apply
the same shadow to system icons.
We previously allowed fully white and yellow colors as the
base color for our interface. This does not work with our
icons or other interface elements. Instead I now constrain
the selectable colors within a certain range of saturation
and brightness. This still leaves the user in control but
will prevent the common case where the user selects an
overly saturated color from the color picker and ends up
with an unusable or extremely ugly panel.
* I have simplified and animated the tool buttons a bit.
* The panel has been replaced by a very basic clean panel.
* The tool buttons have been animated.
