def expand(self, sender):
glyph = CurrentGlyph()
defconGlyph = glyph.naked()
glyph.prepareUndo("Outline")
isQuad = curveConverter.isQuadratic(defconGlyph)
if isQuad:
curveConverter.quadratic2bezier(defconGlyph)
outline = self.calculate(glyph)
glyph.clear()
outline.drawPoints(glyph.getPointPen())
if isQuad:
curveConverter.bezier2quadratic(defconGlyph)
glyph.round()
glyph.performUndo()
