def get_fixture_icon(self, fixture):
"""Return an SVG group for a single fixture.
Search the package data for a symbol for this fixture, then
transform as appropriate based on tags and plot scaling.
Args:
fixture: the fixture object to create an icon for.
Returns:
An ElementTree object representing an SVG 'g' element.
"""
# Get the base SVG element
symbol_name = fixture.data['symbol']
tree = ET.parse(get_data('symbol/'+symbol_name+'.svg'))
root = tree.getroot()
svg_ns = {'ns0': 'http://www.w3.org/2000/svg'}
symbol = root.find('ns0:g', svg_ns)
# Transform based on scaling and data
centre = self.get_page_dimensions()[0]/2
plaster = self.get_plaster_coord()
scale = float(self.options['scale'])
plot_pos = lambda dim: (float(fixture.data['pos'+dim])*1000)
rotation = fixture.get_rotation()
colour = fixture.get_colour()
symbol.set('transform', 'scale( '+str(1/scale)+' ) '
'translate('+str(centre*scale+plot_pos('X'))+' '+
str(plot_pos('Y')+plaster*scale)+') '
'rotate('+str(rotation)+')')
for path in symbol:
if path.get('class') == 'outer':
path.set('fill', colour)
path.set('stroke-width',
str(float(self.options['line-weight-heavy'])*scale))
return symbol
def __init__(self, fixture):
"""Load the fixture symbol file."""
self.fixture = fixture
symbol_name = fixture.data['symbol']
tree = ET.parse(get_data('symbol/'+symbol_name+'.svg'))
root = tree.getroot()
self.ns = {'ns0': 'http://www.w3.org/2000/svg'}
self.image_group = root.find('ns0:g', self.ns)
