#include <stdint.h>

/// A normal window
#define OUTPUT_WINDOW 0
/// A desktop layer (wallpaper)
#define OUTPUT_LAYER 1

#define DEFAULT_WIDTH 400
#define DEFAULT_HEIGHT 400


struct client_state;

struct surface;
struct surface_list;
struct client_state;

#define EVENT_NONE 0
#define EVENT_DRAW 1
#define EVENT_EXIT 2

struct event {
    int type;
    union {
        /// EVENT_DRAW
        struct {
            int width, height;
            uint32_t time;
            struct surface *surface;
        } draw;
    } data;
};

/// output_list: if not NULL, only select outputs should be drawn to
struct client_state* wayland_init(int output_type, char *output_list[], int output_list_len);
void commit(struct client_state *state);
struct event wait_for_event(struct client_state *state);
void swap_buffers(struct client_state *state, struct surface *surface);