Wow. This looks like a security vulnerability. Imagine an app that presents itself as a window with lots of pinholes in it. The holes are too small to see, and you end up clicking the app behind it unawares of doing so. This seems like a *really bad* idea to this humble observer.
From: Dev [mailto:[email protected]] On Behalf Of Manuel Bachmann Sent: Friday, December 19, 2014 8:35 AM To: [email protected] Subject: [Dev] [wayland] Non-rectangular Wayland window, input-through 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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