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###############################################################################
#
# ChartArea - A class for writing the Excel XLSX Area charts.
#
# Copyright 2013-2015, John McNamara, jmcnamara@cpan.org
#
from . import chart
class ChartArea(chart.Chart):
"""
A class for writing the Excel XLSX Area charts.
"""
###########################################################################
#
# Public API.
#
###########################################################################
def __init__(self, options=None):
"""
Constructor.
"""
super(ChartArea, self).__init__()
if options is None:
options = {}
self.subtype = options.get('subtype')
if not self.subtype:
self.subtype = 'standard'
self.cross_between = 'midCat'
self.show_crosses = 0
# Override and reset the default axis values.
if self.subtype == 'percent_stacked':
self.y_axis['defaults']['num_format'] = '0%'
# Set the available data label positions for this chart type.
self.label_position_default = 'center'
self.label_positions = {'center': 'ctr'}
self.set_y_axis({})
###########################################################################
#
# Private API.
#
###########################################################################
def _write_chart_type(self, args):
# Override the virtual superclass method with a chart specific method.
# Write the c:areaChart element.
self._write_area_chart(args)
###########################################################################
#
# XML methods.
#
###########################################################################
#
def _write_area_chart(self, args):
# Write the <c:areaChart> element.
if args['primary_axes']:
series = self._get_primary_axes_series()
else:
series = self._get_secondary_axes_series()
if not len(series):
return
subtype = self.subtype
if subtype == 'percent_stacked':
subtype = 'percentStacked'
self._xml_start_tag('c:areaChart')
# Write the c:grouping element.
self._write_grouping(subtype)
# Write the series elements.
for data in series:
self._write_ser(data)
# Write the c:dropLines element.
self._write_drop_lines()
# Write the c:marker element.
self._write_marker_value()
# Write the c:axId elements
self._write_axis_ids(args)
self._xml_end_tag('c:areaChart')