There are already a few alternatives to the Oxygen window decoration available for KDE 4: Some ship with KWin, some are available on kde-look.org. Common to all these decorations is that they have some rendering code, either using painting calls, or by combining PNG picture tiles in deKorator.
For Skulpture, I tried something different. As Qt supports MDI windows, the Skulpture window decoration client simply uses the Qt style to paint the window title bar decoration. This has the advantage that the code is shared between the two window types.
Using the Skulpture window decoration, you can make the borders as small as 0 pixels. You can also change the size of the title bar, because the glyphs for the buttons and the icon are scalable. See this image for an extreme example.
Now if you do not like the look of Skulpture, but prefer a different style, you might be interested in the experimental “QtStyle” option of the window decoration. This option can be used to select a different Qt style in Skulpture. To try it, edit the file
.kde/share/config/kwinskulpturerc and add the following:
In theory, it should work with any Qt style. For example, this feature can also be used to get a Float style window decoration. If you like this feature, please tell me, so that I can improve it.
Do not try this on KDE 4.0, though, as you hit the famous “green window title bar bug” 🙂