On Sunday 02 January 2011 19:09:40 Aaron J. Seigo wrote: > > FYI: rotating a window is trivial in kwin - built in feature of the > > rendering pipeline. > > yes :) What I forgot: it's of course only available in the OpenGL backend. > > > The difficult part would be IMHO the X atom and > > calculating the correct aspect in the thumbnail effect. > > the X atom could be extended with one value that denotes the degrees of > rotation from vertical, no? if we wish to have full 3D rotation, then we'd > need three values and it gets more complex. 2D rotation is a simple single > value, however. The rendering pipeline supports exactly one rotation around either the x, y or z axis. If we want a simple 2D rotation we only need the angle. For full 3D rotation the pipeline is too limited. But it's on my TODO to allow an arbitrary number of rotations. > > we can ignore this issue completely and in the common case it will be Good > Enough(tm); if the item is ever rotated on the canvas, it'll look odd, > however. we can, of course, choose to live with that and i don't think any > kittens will die ;) Third possible option would be to not render a thumbnail at all if it's rotated.
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