class IconImageNode(PXImage):
"""Just like PImage, except it semantically zooms
(i.e., at low scales, it does not paint its bitmap).
"""
TEMP_ELLIPSE = Ellipse2D.Float()
ENABLE_SEMANTIC_ZOOM = False
def __init__(self, image_or_string=None):
PXImage.__init__(self, image_or_string)
self.path = GeneralPath() # transient???
self.original_bounds = self.bounds
self.prev_scale = 0
def updatePath(self, scale):
origWidth = self.original_bounds.width
origHeight = self.original_bounds.height
width = origWidth * scale
height = origWidth * scale
offsetX = (origWidth - width) / 2.
offsetY = (origHeight - height) / 2.
self.path.reset()
self.TEMP_ELLIPSE.setFrame(offsetX, offsetY, width, height)
self.path.append(self.TEMP_ELLIPSE, False)
def paint(self, context):
s = context.scale
g2 = context.graphics
if self.ENABLE_SEMANTIC_ZOOM and s < uienvironment['SEMANTIC_ZOOM_LEVEL']:
if s != self.prev_scale:
delta = 1 - ((uienvironment['SEMANTIC_ZOOM_LEVEL'] - s)
/ uienvironment['SEMANTIC_ZOOM_LEVEL'])
self.updatePath(1. / delta)
g2.setPaint(NengoStyle.COLOR_FOREGROUND)
g2.fill(self.path)
# g2.fill(self.boundsReference)
else:
self.super__setPaint(context)
