#!/usr/bin/mscgen -Tpng

msc {
	hscale="1.5";

	c [label = "compositor"], w [label = "libweston core"],
	b [label = "backend"];

	|||;

	--- [label = "Compositor reacts to heads_changed"];

	c <<= w [label = "heads_changed callback"];
	c box c [label = "Iterate with weston_compositor_iterate_heads(), for each head"];
	c => w [label = "weston_head_is_connected()"];
	c << w [label = "bool"];
	c => w [label = "weston_head_is_enabled()"];
	c << w [label = "bool"];
	c => w [label = "weston_head_is_device_changed()"];
	c << w [label = "bool"];
	c abox c [label = "If the head needs enabling, create an output."];
	c abox c [label = "If the head needs disabling, disable the output or destroy the output."];
	c >> w;
}