My KWIN fork where I work on features like per-output virtual desktops
263e5d7969
The idea behind this signal is to notify whenever the tree of sub surfaces changes in a way that a repaint of the Surface is required. Possible situations are: * surface damaged * surface unmapped * subsurface added/removed * subsurface moved (position changed) * subsurface stacking changed Ideally it would be possible to provide the actual area which needs repainting, but due to the possible complexity of the tree, synced and desynced changes this doesn't look worth the effort. A user of the signal might trigger too many repaints with it, but if it really wants to be only notified about the actual changes, it can just track the individual sub-surfaces. |
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