On Thu, 25 Feb 2021 09:59:50 +0530 "Sameer Ranjan" <sam...@cdot.in> wrote:
> Hey, > > I am using weston as compositor for my platform. I am developing a feature in > which I > would want to know the top most application displayed by the compositor as > multiple > application can be opened at a single instance. Is there any variable or any > function > provided in weston by which I can know the top most application name rendered > by the > compositor. Hi, not directly, no. Your shell plugin maintains all that information, so it's between you and the shell plugin. Shell-plugins collect weston_views into weston_layers and put weston_layers into weston_compositor::layer_list according to the desired surface z-order. For an example of how to iterate the layers, see weston_compositor_print_scene_graph(). In order to detect which weston_surface is an application window and get an appropriate name for it, you need information specific to the shell-plugin. There is no generic API for this. Do not attempt to parse what weston_surface::get_label() returns as that is not meant to be machine-readable nor stable. If you want to see what weston_compositor_print_scene_graph() prints, start weston with --debug option and use 'weston-debug scene-graph' command in a terminal. Thanks, pq
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