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output: introduce request_state event

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This allows backends to request the compositor to change the state
of an output.

References: https://github.com/swaywm/wlroots/issues/2300#issuecomment-761819673
This commit is contained in:
Simon Ser 2021-01-28 16:04:17 +01:00
parent 92ac84a192
commit 666e92f15e
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GPG key ID: 0FDE7BE0E88F5E48
3 changed files with 21 additions and 0 deletions
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5
include/wlr/interfaces/wlr_output.h
View file

@ -138,5 +138,10 @@ void wlr_output_send_frame(struct wlr_output *output);
*/
void wlr_output_send_present(struct wlr_output *output,
struct wlr_output_event_present *event);
/**
* Request the compositor to apply new state.
*/
void wlr_output_send_request_state(struct wlr_output *output,
const struct wlr_output_state *state);
#endif

6
include/wlr/types/wlr_output.h
View file

@ -171,6 +171,7 @@ struct wlr_output {
struct wl_signal enable;
struct wl_signal mode;
struct wl_signal description;
struct wl_signal request_state;
struct wl_signal destroy;
} events;
@ -238,6 +239,11 @@ struct wlr_output_event_bind {
struct wl_resource *resource;
};
struct wlr_output_event_request_state {
struct wlr_output *output;
struct wlr_output_state state;
};
struct wlr_surface;
/**

10
types/wlr_output.c
View file

@ -344,6 +344,7 @@ 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.description);
wl_signal_init(&output->events.request_state);
wl_signal_init(&output->events.destroy);
pixman_region32_init(&output->pending.damage);
@ -728,6 +729,15 @@ void wlr_output_send_present(struct wlr_output *output,
wlr_signal_emit_safe(&output->events.present, event);
}
void wlr_output_send_request_state(struct wlr_output *output,
const struct wlr_output_state *state) {
struct wlr_output_event_request_state event = {
.output = output,
.state = *state,
};
wlr_signal_emit_safe(&output->events.request_state, &event);
}
void wlr_output_queue_state(struct wlr_output *output,
const struct wlr_output_state *state) {
assert(state != &output->pending);