Hi, I'm working on adding support to GTK+ for doing client-side window decorations, and there are a couple additional hints that seem like they would be useful to propose.
Part of this work is involving changing GTK+ to use RGBA windows by default. For this, I'd like to propose an XserverRegion hint that contains a region marking what parts of the window are known to be opaque. The idea being that this could be used by a WM/compositor to optimize which parts of the window it needs to composite, if it's useful to the WM/compositor (or it could be ignored; a GL compositor may not find this kind of information very useful, for example). This might be called _NET_OPAQUE_REGION. The other hint that would be useful is a hint similar to _NET_FRAME_EXTENTS that specifies client-side drop shadow extents. The main idea here being that the WM could take advantage of this to know where to perform window snapping for windows whose decorations and drop-shadows are drawn client-side. This might be called _NET_SHADOW_EXTENTS. Lastly, after reading the documentation about _NET_FRAME_EXTENTS [1] it says that "the window manager MUST set _NET_FRAME_EXTENTS to the extents of the window's frame." If an application is drawing the decorations, should it set this property? Thanks, Cody [1]. http://standards.freedesktop.org/wm-spec/1.3/ar01s05.html _______________________________________________ wm-spec-list mailing list wm-spec-list@gnome.org http://mail.gnome.org/mailman/listinfo/wm-spec-list
