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layers: restrict layer-shell on-demand focus on map

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...so that clients with on-demand keyboard interactivity in the
background/bottom/top layers do not steal focus. The reason for this is to
avoid desktop components like panels and desktops from stealing keyboard
focus if they are re-started.

We still let such clients in the overlay layer get focus on map so that
for example labnag with its default <prompt> setting take keyboard focus
on map, whilst still letting users click on something else to move focus
away.

Fixes: #3167
This commit is contained in:
Johan Malm 2026-02-10 20:17:46 +00:00 • committed by Johan Malm
parent a672e8a9fd
commit 155c153658
1 changed files with 26 additions and 2 deletions
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28
src/layers.c
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@ -382,12 +382,19 @@ handle_unmap(struct wl_listener *listener, void *data)
layer->being_unmapped = false;
}
static bool
is_overlay(struct wlr_layer_surface_v1 *layer_surface)
{
return layer_surface->current.layer == ZWLR_LAYER_SHELL_V1_LAYER_OVERLAY;
}
static void
handle_map(struct wl_listener *listener, void *data)
{
struct lab_layer_surface *layer = wl_container_of(listener, layer, map);
struct wlr_output *wlr_output =
layer->scene_layer_surface->layer_surface->output;
struct wlr_layer_surface_v1 *layer_surface =
layer->scene_layer_surface->layer_surface;
struct wlr_output *wlr_output = layer_surface->output;
if (wlr_output) {
output_update_usable_area(wlr_output->data);
}
@ -399,6 +406,23 @@ handle_map(struct wl_listener *listener, void *data)
* the scene. See wlr_scene_surface_create() documentation.
*/
/*
* Layer-shell clients with exclusive interactivity always get focus,
* whereas on-demand ones only get it when in the overlay layer. We
* could make this configurable, but for the time being this default
* behaviour strikes a balance between:
*
* 1. Giving overlay, on-demand clients (like labnag with the default
* <prompt> settings) keyboard focus.
* 2. Preventing desktop components like panels and desktops from
* stealing keyboard focus on re-start. On compositor start, this
* is not really a problem, but if any such client restarts later,
* focus-stealing is unlikely to be desirable.
*/
if (!is_overlay(layer_surface) && is_on_demand(layer_surface)) {
return;
}
struct seat *seat = &layer->server->seat;
layer_try_set_focus(seat, layer->scene_layer_surface->layer_surface);
}