constants = {
	sensitivity_num = 2;
	sensitivity_denom = 5;
};

enums = {
	namespaces: ["clickpad"];
};

predicates = {
	is_evdev = {
		type = "code_ns";
		min = "namespaces.clickpad";
		max = "namespaces.clickpad";
	};
	key_event = {
		type = "and";
		args = (
			"is_evdev",
			{
				type = "code_major";
				min = "event_type.KEY";
				max = "event_type.KEY";
			}
		);
	};
	syn_event = {
		type = "and";
		args = (
			"is_evdev",
			{
				type = "code_major";
				min = "event_type.SYN";
				max = "event_type.SYN";
			}
		);
	};
	abs_event = {
		type = "and";
		args = (
			"is_evdev",
			{
				type = "code_major";
				min = "event_type.ABS";
				max = "event_type.ABS";
			}
		);
	};
	misc_event = {
		type = "and";
		args = (
			"is_evdev",
			{
				type = "code_major";
				min = "event_type.MSC";
				max = "event_type.MSC";
			}
		);
	};
	btn_quadtap_event = {
		type = "and";
		args = (
			"key_event",
			{
				type = "code_minor";
				min = "button_event.TOOL_QUADTAP";
				max = "button_event.TOOL_QUADTAP";
			}
		);
	};
	misc_timestamp = {
		type = "and";
		args = (
			"misc_event",
			{
				type = "code_minor";
				min = "misc_event.TIMESTAMP";
				max = "misc_event.TIMESTAMP";
			}
		);
	};
	abs_x = {
		type = "and";
		args = (
			"abs_event",
			{
				type = "code_minor";
				min = "absolute_axis.X";
				max = "absolute_axis.X";
			}
		);
	};
	abs_y = {
		type = "and";
		args = (
			"abs_event",
			{
				type = "code_minor";
				min = "absolute_axis.Y";
				max = "absolute_axis.Y";
			}
		);
	};
	quadtap_held = {
		type = "accept";
		inverted = 1;
	};
	bypass = {
		type = "or";
		args = ["syn_event", "misc_timestamp"];
	};
	payload_zero = {
		type = "payload";
		min = 0;
		max = 0;
	};
	payload_one = {
		type = "payload";
		min = 1;
		max = 1;
	};
};

nodes = {
	clickpad = {
		type = "evdev";
		options = {
			file = "/dev/input/event7";
			namespace = "namespaces.clickpad";
		};
	};
	select_interesting_events = {
		type = "router";
		options = {
			predicates = ["bypass", "btn_quadtap_event", "abs_x", "abs_y"];
		};
	};
	quadtap_subst_seq = {
		type = "tee";
	};
	morph_left_click = {
		type = "assign";
		options = {
			minor = "button_event.LEFT";
		};
	};
	morph_right_click = {
		type = "assign";
		options = {
			minor = "button_event.RIGHT";
		};
	};
	merge = {
		type = "tee";
	};
	virtual_out = {
		type = "uinput";
		options = {
			name = "Quadtap gesture";
			enabled_codes = (
				{major: "event_type.KEY"; minor: "button_event.LEFT"}
				,
				{major: "event_type.KEY"; minor: "button_event.RIGHT"}
				,
				{major: "event_type.KEY"; minor: "button_event.MIDDLE"}
				,
				{major: "event_type.REL"; minor: "relative_axis.X"}
				,
				{major: "event_type.REL"; minor: "relative_axis.Y"}
				,
				{major: "event_type.MSC"; minor: "misc_event.TIMESTAMP"}
			);
			properties = ["input_property.POINTER", "input_property.BUTTONPAD"];
		};
	};
	update_quadtap_held = {
		type = "modify_predicate";
		options = {
			target = "quadtap_held";
			uninvert_on = "payload_one";
			invert_on = "payload_zero";
		};
	};
	differentiate_x = {
		type = "differentiate";
	};
	differentiate_y = {
		type = "differentiate";
	};
	morph_rel = {
		type = "assign";
		options = {
			major = "event_type.REL";
			// Preserve minor, because relative_axis.X = absolute_axis.X, relative_axis.Y = absolute_axis.Y
		};
	};
	while_quadtap_held = {
		type = "router";
		options = {
			predicates = ["quadtap_held"];
		};
	};
	sensitivity_x = {
		type = "scale";
		options = {
			numerator = "sensitivity_num";
			denominator = "sensitivity_denom";
			amortize_rounding_error = "true";
		};
	};
	sensitivity_y = {
		type = "scale";
		options = {
			numerator = "sensitivity_num";
			denominator = "sensitivity_denom";
			amortize_rounding_error = "true";
		};
	};
};

channels = ({
	from: ("clickpad", 0);
	to: ("select_interesting_events", 0);
}, {
	from: ("select_interesting_events", 0);  // EV_SYN
	to: ("merge", 0);
}, {
	from: ("select_interesting_events", 1);  // BTN_TOOL_QUADTAP
	to: ("quadtap_subst_seq", 0);
}, {
	from: ("quadtap_subst_seq", 0);
	to: ("morph_left_click", 0);
}, {
	from: ("quadtap_subst_seq", 1);
	to: ("morph_right_click", 0);
}, {
	from: ("morph_left_click", 0);
	to: ("merge", 1);
}, {
	from: ("morph_right_click", 0);
	to: ("merge", 2);
}, {
	from: ("select_interesting_events", 2);  // ABS_X
	to: ("differentiate_x", 0);
}, {
	from: ("select_interesting_events", 3);  // ABS_Y
	to: ("differentiate_y", 0);
}, {
	from: ("differentiate_x", 0);
	to: ("sensitivity_x", 0);
}, {
	from: ("differentiate_y", 0);
	to: ("sensitivity_y", 0);
}, {
	from: ("sensitivity_x", 0);
	to: ("while_quadtap_held", 0);
}, {
	from: ("sensitivity_y", 0);
	to: ("while_quadtap_held", 1);
}, {
	from: ("while_quadtap_held", 0);
	to: ("morph_rel", 0);
}, {
	from: ("morph_rel", 0);
	to: ("merge", 3);
}, {
	from: ("merge", 0);
	to: ("virtual_out", 0);
}, {
	from: ("quadtap_subst_seq", 4);
	to: ("update_quadtap_held", 0);
});

// vim: ft=libconfig