wlroots/include/wlr/xwayland/server.h

/*
 * This an unstable interface of wlroots. No guarantees are made regarding the
 * future consistency of this API.
 */
#ifndef WLR_USE_UNSTABLE
#error "Add -DWLR_USE_UNSTABLE to enable unstable wlroots features"
#endif

#ifndef WLR_XWAYLAND_SERVER_H
#define WLR_XWAYLAND_SERVER_H

#include <stdbool.h>
#include <sys/types.h>
#include <time.h>
#include <wayland-server-core.h>

/**
 * Xwayland spawn function. pathname and args are compatible with the execv
 * family of functions. envp is a NULL terminated list of enironment variables
 * that must be added before exec, while uncloexec is a -1 terminated list of
 * file descriptors that must have CLOEXEC unset after fork but before exec.
 */
typedef bool (*xwayland_spawn_func_t)(char *pathname, char *args[], char *envp[], int uncloexec[]);

struct wlr_xwayland_server_options {
	bool lazy;
	bool enable_wm;
	bool no_touch_pointer_emulation;
	bool force_xrandr_emulation;
	int terminate_delay; // in seconds, 0 to terminate immediately
	xwayland_spawn_func_t spawn_handler;
};

struct wlr_xwayland_server {
	struct wl_client *client;
	struct wl_event_source *pipe_source;
	int wm_fd[2], wl_fd[2];
	bool ready;

	time_t server_start;

	/* Anything above display is reset on Xwayland restart, rest is conserved */

	int display;
	char display_name[16];
	int x_fd[2];
	struct wl_event_source *x_fd_read_event[2];
	struct wlr_xwayland_server_options options;

	struct wl_display *wl_display;
	struct wl_event_source *idle_source;

	struct {
		struct wl_signal start;
		struct wl_signal ready;
		struct wl_signal destroy;
	} events;

	void *data;

	struct {
		struct wl_listener client_destroy;
		struct wl_listener display_destroy;
	} WLR_PRIVATE;
};

struct wlr_xwayland_server_ready_event {
	struct wlr_xwayland_server *server;
	int wm_fd;
};

struct wlr_xwayland_server *wlr_xwayland_server_create(
	struct wl_display *display, struct wlr_xwayland_server_options *options);
void wlr_xwayland_server_destroy(struct wlr_xwayland_server *server);

#endif