Initial commit

button.lua

@@ -0,0 +1,27 @@
+local core = require((...):match("^(.+)%.[^%.]+") .. '.core')
+
+-- the widget
+return function(title, x,y, w,h, draw)
+	-- Generate unique identifier for gui state update and querying.
+	local id = core.generateID()
+
+	-- The widget mouse-state can be:
+	--   hot (mouse over widget),
+	--   active (mouse pressed on widget) or
+	--   normal (mouse not on widget and not pressed on widget).
+	--
+	-- core.mouse.updateState(id, x,y,w,h) updates the state for this widget.
+	core.mouse.updateState(id, x,y,w,h)
+
+	-- core.makeTabable makes the item focus on tab. Tab order is determied
+	-- by the order you call the widget functions.
+	core.makeTabable(id)
+
+	-- core.registerDraw(id, drawfunction, drawfunction-arguments...)
+	-- shows widget when core.draw() is called.
+	core.registerDraw(id, draw or core.style.Button, title,x,y,w,h)
+
+	return core.mouse.releasedOn(id) or
+	       (core.keyboard.key == 'return' and core.hasKeyFocus(id))
+end
+