def writePNG(self, filename, width=-1, height=-1, scale=1.):
'''
render to png file
'''
if CairoSVG is None:
raise ImportError('cairo extension not available')
if isinstance(filename, basestring):
fh = open(filename, 'wb')
else:
fh = filename
svgfh = StringIO()
self.write(svgfh)
svgfh.seek(0)
writer = CairoSVG(svgfh)
writer.toPNG(fh, width, height, scale)
def writePNG(self, filename, width = -1, height = -1, scale = 1.):
'''
render to png file
'''
if CairoSVG is None:
raise ImportError('cairo extension not available')
if isinstance(filename, basestring):
fh = open(filename, 'wb')
else:
fh = filename
svgfh = StringIO()
self.write(svgfh)
svgfh.seek(0)
writer = CairoSVG(svgfh)
writer.toPNG(fh, width, height, scale)
