Hi folks, It has been asked recently how to make a non-rectangular Wayland window, where input events (mouse clicks, touch events) would go "through" the window and be received by windows stacked under it - think of a donut where clicking in the center passes through.
The answer consists in using "wl_region" elements together with the "wl_input_region" functions. The idea is to create a "wl_region" structure, populate it with several rectangles which will determine which parts of the surface are clickable, and then call "wl_surface_set_input_region" to make it effective. Here is a sample code which demonstrates that : http://www.tarnyko.net/repo/wayland-3-shm_surface_input_regions.c And a screenshot : http://www.tarnyko.net/repo/wayland-3-shm_surface_input_regions.png This is a white rectangle with a hole in the center. Clicking in the hole will eventually activate other surfaces (here, a "weston-flower" instance). -- Regards, *Manuel BACHMANN Tizen Project VANNES-FR*
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