Fun and testing elements conform to new API

elements/fun/clock.go

@@ -19,17 +19,11 @@ type AnalogClock struct {
 // NewAnalogClock creates a new analog clock that displays the specified time.
 func NewAnalogClock (newTime time.Time) (element *AnalogClock) {
 	element = &AnalogClock { }
-	element.Core, element.core = core.NewCore(element)
+	element.Core, element.core = core.NewCore(element.draw)
 	element.core.SetMinimumSize(64, 64)
 	return
 }
 
-// Resize changes the size of the clock.
-func (element *AnalogClock) Resize (width, height int) {
-	element.core.AllocateCanvas(width, height)
-	element.draw()
-}
-
 // SetTime changes the time that the clock displays.
 func (element *AnalogClock) SetTime (newTime time.Time) {
 	if newTime == element.time { return }