def draw(self, width, height):
if self.textline:
self.removeChild(self.textline)
tb = TextBlock()
tb.content = TextElement(self.text, self.format)
self.textline = tb.createTextLine(None, width)
self.addChild(self.textline)
def label_node(self, node):
font = FontDescription("Arial")
format = ElementFormat(font)
format.fontSize = 14
el = TextElement(node.label or node.name, format)
block = TextBlock()
block.content = el
tl = block.createTextLine(None, node.width*36)
pos = node.label_pos
if not pos:
pos = node
tl.x = int(pos.x-tl.width/2)
tl.y = int(pos.y+tl.height/2)
self.sprite.addChild(tl)