102 lines
2.6 KiB
Python
102 lines
2.6 KiB
Python
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###############################################################################
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#
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# ChartRadar - A class for writing the Excel XLSX Radar charts.
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#
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# Copyright 2013-2019, John McNamara, jmcnamara@cpan.org
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#
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from . import chart
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class ChartRadar(chart.Chart):
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"""
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A class for writing the Excel XLSX Radar charts.
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"""
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###########################################################################
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#
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# Public API.
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#
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###########################################################################
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def __init__(self, options=None):
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"""
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Constructor.
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"""
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super(ChartRadar, self).__init__()
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if options is None:
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options = {}
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self.subtype = options.get('subtype')
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if not self.subtype:
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self.subtype = 'marker'
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self.default_marker = {'type': 'none'}
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# Override and reset the default axis values.
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self.x_axis['defaults']['major_gridlines'] = {'visible': 1}
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self.set_x_axis({})
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# Set the available data label positions for this chart type.
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self.label_position_default = 'center'
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self.label_positions = {'center': 'ctr'}
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# Hardcode major_tick_mark for now until there is an accessor.
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self.y_axis['major_tick_mark'] = 'cross'
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###########################################################################
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#
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# Private API.
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#
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###########################################################################
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def _write_chart_type(self, args):
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# Write the c:radarChart element.
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self._write_radar_chart(args)
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###########################################################################
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#
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# XML methods.
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#
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###########################################################################
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def _write_radar_chart(self, args):
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# Write the <c:radarChart> element.
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if args['primary_axes']:
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series = self._get_primary_axes_series()
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else:
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series = self._get_secondary_axes_series()
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if not len(series):
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return
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self._xml_start_tag('c:radarChart')
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# Write the c:radarStyle element.
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self._write_radar_style()
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# Write the series elements.
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for data in series:
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self._write_ser(data)
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# Write the c:axId elements
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self._write_axis_ids(args)
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self._xml_end_tag('c:radarChart')
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def _write_radar_style(self):
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# Write the <c:radarStyle> element.
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val = 'marker'
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if self.subtype == 'filled':
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val = 'filled'
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attributes = [('val', val)]
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self._xml_empty_tag('c:radarStyle', attributes)
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