class Shape(Symbolizer):
"""
Symbolizer for point geometries that consists of a ``color`` and ``size``.
>>> Shape('#ff0000', 5)
Shape(color=(255,0,0),size=5,type=circle)
The ``type`` argument is a well known name describing the shape type:
>>> shp = Shape(type='triangle')
The default shape is "circle". Allowable values include "square", "triangle",
"star", "cross", and "x".
"""
def __init__(self, color=None, size=6, type='circle', opacity=1.0, rotation=0):
Symbolizer.__init__(self)
self.color = Color(color) if color else None
self.size = Expression(size)
self.type = type
self.opacity = Expression(opacity)
self.rotation = Expression(rotation)
self._stroke = None
def stroke(self, color="#000000", width=1, dash=None, cap=None, join=None):
self._stroke = Stroke(color, width, dash, cap, join)
return self
def _prepare(self, rule):
syms = util.symbolizers(rule, PointSymbolizer)
for sym in syms:
self._apply(sym)
def _apply(self, sym):
Symbolizer._apply(self, sym)
g = util.graphic(sym)
g.setSize(self.size.expr)
if self.rotation != None and self.rotation.expr != None:
g.setRotation(self.rotation.expr)
g.graphicalSymbols().clear()
g.graphicalSymbols().add(self._mark())
def _mark(self):
f = self.factory
mark = f.createMark()
if self._stroke != None:
mark.setStroke(self._stroke._stroke())
else:
mark.setStroke(Stroke(self.color)._stroke())
if self.color != None and self.color.expr != None:
mark.setFill(Fill(self.color, self.opacity)._fill())
else:
mark.setFill(None)
mark.setWellKnownName(self.type)
return mark
def __repr__(self):
return self._repr('color','size','type')
def _mark(self):
f = self.factory
mark = f.createMark()
if self._stroke != None:
mark.setStroke(self._stroke._stroke())
else:
mark.setStroke(Stroke(self.color)._stroke())
if self.color != None and self.color.expr != None:
mark.setFill(Fill(self.color, self.opacity)._fill())
else:
mark.setFill(None)
mark.setWellKnownName(self.type)
return mark
def stroke(self, color="#000000", width=1, dash=None, cap=None, join=None): self._stroke = Stroke(color, width, dash, cap, join) return self
