def _drawBackground( self, painter ) :

		size = self.size()
		grad = QtGui.QLinearGradient( 0, 0, size.x, 0 )

		displayTransform = GafferUI.DisplayTransform.get() if self.__useDisplayTransform else lambda x : x

		if self.component == "a" :
			c1 = IECore.Color3f( 0 )
			c2 = IECore.Color3f( 1 )
		else :
			c1 = IECore.Color3f( self.color[0], self.color[1], self.color[2] )
			c2 = IECore.Color3f( self.color[0], self.color[1], self.color[2] )
			if self.component in "hsv" :
				c1 = c1.rgbToHSV()
				c2 = c2.rgbToHSV()
			a = { "r" : 0, "g" : 1, "b" : 2, "h" : 0, "s" : 1, "v": 2 }[self.component]
			c1[a] = 0
			c2[a] = 1

		numStops = max( 2, size.x / 2 )
		for i in range( 0, numStops ) :

			t = float( i ) / (numStops-1)
			c = c1 + (c2/c1) * t
			if self.component in "hsv" :
				c = c.hsvToRGB()

			grad.setColorAt( t, self._qtColor( displayTransform( c ) ) )

		brush = QtGui.QBrush( grad )
		painter.fillRect( 0, 0, size.x, size.y, brush )
dataset/ETHPy150Open ImageEngine/gaffer/python/GafferUI/ColorChooser.py/_ComponentSlider._drawBackground/operator `-` -> `/`