def subRenderer(self, color):
lineSymbol = QgsLineSymbolV2()
arrowSymbol = QgsArrowSymbolLayer().create()
arrowSymbol.setArrowWidth(0.0)
arrowSymbol.setArrowStartWidth(0.0)
arrowSymbol.setColor(color)
arrowSymbol.setIsCurved(False)
arrowSymbol.setIsRepeated(False)
renderSetting = QgsRenderContext()
renderSetting.setFlag(QgsRenderContext.Antialiasing, False)
renderSetting.setFlag(QgsRenderContext.DrawSymbolBounds, False)
renderSetting.setFlag(QgsRenderContext.ForceVectorOutput, False)
renderSetting.setFlag(QgsRenderContext.UseAdvancedEffects, False)
renderSetting.setFlag(QgsRenderContext.UseRenderingOptimization, False)
arrEffectStack = arrowSymbol.paintEffect()
effList = arrEffectStack.effectList()
for i in range(0, len(effList)):
if type(effList[i]) == QgsDrawSourceEffect:
effList[i].setDrawMode(1)
arrEffectStack.setEnabled(True)
lineSymbol.appendSymbolLayer(arrowSymbol)
return lineSymbol
def __init__(self, iface, name, qcolor, width, attributes, layer_group=None, visible=True):
"..."
WGS84Layer.__init__(self, iface, name, "LineString", visible, layer_group)
arrow_layer = QgsArrowSymbolLayer()
arrow_layer.setColor(qcolor)
arrow_layer.setArrowWidth(width)
arrow_layer.setArrowStartWidth(width)
arrow_layer.setHeadThickness(width * 2.0)
self.layer.renderer().symbol().changeSymbolLayer(0, arrow_layer)
WGS84Layer.refresh_legend(self)
self.set_attributes(attributes)
