def _process_svg(self, document, properties, attributes):
root = document.getroot()
if self._menu.selected is not None:
needle = self.page.theme.get_element("needle", root = root)
needle_center = self.page.theme.get_element("needle_center", root = root)
val = float(self._menu.selected.sensor.value)
"""
The title contains the bounds for the gauge, in the format
lower_val,upper_val,middle_val,lower_deg,upper_deg
"""
gauge_data = needle_center.get("title").split(",")
lower_val = float(gauge_data[0])
upper_val = float(gauge_data[1])
middle_val = float(gauge_data[2])
lower_deg = float(gauge_data[3])
upper_deg = float(gauge_data[4])
# Clamp the value
val = min(upper_val, max(lower_val, val))
# Ratio of gauge bounds to rotate by
ratio = val / ( upper_val - lower_val )
"""
Work out total number of degrees in the bounds
"""
total_deg = upper_deg + ( 360 - lower_deg )
# Work out total number of degress to rotate
rot_degrees = total_deg * ratio
#
degr = lower_deg
degr += rot_degrees
"""
This is a bit weak. It doesn't take transformations into account,
so care is needed in the SVG.
"""
center_bounds = g15svg.get_bounds(needle_center)
needle.set("transform", "rotate(%f,%f,%f)" % (degr, center_bounds[0], center_bounds[1]) )
def _process_svg(self, document, properties, attributes):
root = document.getroot()
if self._menu.selected is not None:
needle = self.page.theme.get_element("needle", root = root)
needle_center = self.page.theme.get_element("needle_center", root = root)
val = float(self._menu.selected.sensor.value)
"""
The title contains the bounds for the gauge, in the format
lower_val,upper_val,middle_val,lower_deg,upper_deg
"""
gauge_data = needle_center.get("title").split(",")
lower_val = float(gauge_data[0])
upper_val = float(gauge_data[1])
middle_val = float(gauge_data[2])
lower_deg = float(gauge_data[3])
upper_deg = float(gauge_data[4])
# Clamp the value
val = min(upper_val, max(lower_val, val))
# Ratio of gauge bounds to rotate by
ratio = val / ( upper_val - lower_val )
"""
Work out total number of degrees in the bounds
"""
total_deg = upper_deg + ( 360 - lower_deg )
# Work out total number of degress to rotate
rot_degrees = total_deg * ratio
#
degr = lower_deg
degr += rot_degrees
"""
This is a bit weak. It doesn't take transformations into account,
so care is needed in the SVG.
"""
center_bounds = g15svg.get_bounds(needle_center)
needle.set("transform", "rotate(%f,%f,%f)" % (degr, center_bounds[0], center_bounds[1]) )
def get_bounds(element):
return g15svg.get_bounds(element)