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scene: ensure layer surface usable area >0

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Clients may, for example, commit an exclusive zone larger than the
output dimensions. Compositors must handle this gracefully, which likely
requires more work on the compositor side but returning a usable area
with negative width or height in wlr_scene_layer_surface_v1_configure()
is nonsensical.

(cherry picked from commit cb01c63a8d)
This commit is contained in:
Isaac Freund 2024-04-16 11:39:08 +02:00 • committed by Simon Zeni
parent 59f026465e
commit 545a294532
1 changed files with 7 additions and 0 deletions
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7
types/scene/layer_shell_v1.c
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@ -70,6 +70,13 @@ static void layer_surface_exclusive_zone(
usable_area->width -= state->exclusive_zone + state->margin.right;
break;
}
if (usable_area->width < 0) {
usable_area->width = 0;
}
if (usable_area->height < 0) {
usable_area->height = 0;
}
}
void wlr_scene_layer_surface_v1_configure(