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backend/drm: add support for suggested output position prop

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Virtualised outputs use the "suggested X" and "suggested Y" DRM props to
indicate their relative position on the host WM.

This change adds members `suggested_x` and `suggested_y` to `struct
wlr_output` which contain the value of these props. Also, a
`suggested_position` signal is added so that compositors can be notified
if there is a changed in the suggested position.
This commit is contained in:
Daniel Playfair Cal 2021-01-10 19:04:58 +11:00
parent a055f23b3b
commit 82f92113fd
6 changed files with 66 additions and 0 deletions
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5
types/wlr_output.c
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@ -263,6 +263,10 @@ void wlr_output_update_available_modes(struct wlr_output *output) {
wlr_signal_emit_safe(&output->events.available_modes, output);
}
void wlr_output_update_suggested_position (struct wlr_output *output) {
wlr_signal_emit_safe(&output->events.suggested_position, output);
}
void wlr_output_set_transform(struct wlr_output *output,
enum wl_output_transform transform) {
if (output->transform == transform) {
@ -381,6 +385,7 @@ void wlr_output_init(struct wlr_output *output, struct wlr_backend *backend,
wl_signal_init(&output->events.enable);
wl_signal_init(&output->events.mode);
wl_signal_init(&output->events.available_modes);
wl_signal_init(&output->events.suggested_position);
wl_signal_init(&output->events.scale);
wl_signal_init(&output->events.transform);
wl_signal_init(&output->events.description);