Documentation for <wlr/types/wlr_output_management_v1.h>

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struct wlr_output_configuration_head_v1 

struct wlr_output_configuration_head_v1 {
	struct wlr_output_head_v1_state state;
	struct wlr_output_configuration_v1 *config;
	struct wl_list link; // wlr_output_configuration_v1.heads
	
	// client state
	struct wl_resource *resource; // can be NULL if finalized or disabled
	
	struct wl_listener output_destroy;
};

wlr_output_configuration_head_v1_create() 

struct wlr_output_configuration_head_v1 *wlr_output_configuration_head_v1_create(​struct wlr_output_configuration_v1 *config, struct wlr_output *output);

Create a new configuration head for the given output. This adds the head to the provided output configuration.

The configuration head will be pre-filled with data from `output`. The compositor should adjust this data according to its current internal state.

struct wlr_output_configuration_v1 

struct wlr_output_configuration_v1 {
	struct wl_list heads; // wlr_output_configuration_head_v1.link
	
	// client state
	struct wlr_output_manager_v1 *manager;
	uint32_t serial;
	bool finalized; // client has requested to apply the config
	bool finished; // feedback has been sent by the compositor
	struct wl_resource *resource; // can be NULL if destroyed early
};

wlr_output_configuration_v1_build_state() 

struct wlr_backend_output_state *wlr_output_configuration_v1_build_state(​const struct wlr_output_configuration_v1 *config, size_t *states_len);

Build an array of struct wlr_output_state reflecting the new configuration.

The states_len pointer will be populated with the number of elements in the array. The caller is responsible for freeing the array.

The returned array can be passed to wlr_backend_test() and wlr_backend_commit().

wlr_output_configuration_v1_create() 

struct wlr_output_configuration_v1 *wlr_output_configuration_v1_create(​void);

Create a new, empty output configuration. Compositors should add current head status with wlr_output_configuration_head_v1_create(). They can then call wlr_output_manager_v1_set_configuration().

wlr_output_configuration_v1_destroy() 

void wlr_output_configuration_v1_destroy(​struct wlr_output_configuration_v1 *config);

wlr_output_configuration_v1_send_failed() 

void wlr_output_configuration_v1_send_failed(​struct wlr_output_configuration_v1 *config);

If the configuration comes from a client request, this sends negative feedback to the client (configuration has not been applied).

wlr_output_configuration_v1_send_succeeded() 

void wlr_output_configuration_v1_send_succeeded(​struct wlr_output_configuration_v1 *config);

If the configuration comes from a client request, this sends positive feedback to the client (configuration has been applied).

struct wlr_output_head_v1 

struct wlr_output_head_v1 {
	struct wlr_output_head_v1_state state;
	struct wlr_output_manager_v1 *manager;
	struct wl_list link; // wlr_output_manager_v1.heads
	
	struct wl_list resources; // wl_resource_get_link()
	struct wl_list mode_resources; // wl_resource_get_link()
	
	struct wl_listener output_destroy;
};

struct wlr_output_head_v1_state 

struct wlr_output_head_v1_state {
	struct wlr_output *output;
	
	bool enabled;
	struct wlr_output_mode *mode;
	struct {
		int32_t width, height;
		int32_t refresh;
	} custom_mode;
	int32_t x, y;
	enum wl_output_transform transform;
	float scale;
	bool adaptive_sync_enabled;
};

wlr_output_head_v1_state_apply() 

void wlr_output_head_v1_state_apply(​const struct wlr_output_head_v1_state *head_state, struct wlr_output_state *output_state);

Apply the head state on the supplied struct wlr_output_state.

Compositors can then pass the resulting struct wlr_output_state to wlr_output_commit_state() or wlr_output_test_state().

The position needs to be applied manually by the caller.

struct wlr_output_manager_v1 

struct wlr_output_manager_v1 {
	struct wl_display *display;
	struct wl_global *global;
	struct wl_list resources; // wl_resource_get_link()
	
	struct wl_list heads; // wlr_output_head_v1.link
	uint32_t serial;
	bool current_configuration_dirty;
	
	struct {
		/**
		 * The `apply` and `test` events are emitted when a client requests a
		 * configuration to be applied or tested. The compositor should send
		 * feedback with `wlr_output_configuration_v1_send_succeeded` xor
		 * `wlr_output_configuration_v1_send_failed`.
		 *
		 * The compositor gains ownership over the configuration (passed as the
		 * event data). That is, the compositor is responsible for destroying
		 * the configuration.
		 */
		struct wl_signal apply; // struct wlr_output_configuration_v1
		struct wl_signal test; // struct wlr_output_configuration_v1
		
		struct wl_signal destroy;
	} events;
	
	struct wl_listener display_destroy;
	
	void *data;
};

wlr_output_manager_v1_create() 

struct wlr_output_manager_v1 *wlr_output_manager_v1_create(​struct wl_display *display);

Create a new output manager. The compositor is responsible for calling wlr_output_manager_v1_set_configuration() whenever the current output configuration changes.

wlr_output_manager_v1_set_configuration() 

void wlr_output_manager_v1_set_configuration(​struct wlr_output_manager_v1 *manager, struct wlr_output_configuration_v1 *config);

Updates the output manager's current configuration. This will broadcast any changes to all clients.

This function takes ownership over `config`. That is, the compositor must not access the configuration anymore.