def data_to_chart_limited(self, data, limit: Optional[int] = None, color_list=None):
limit = self._get_chart_element_count() if limit is None else limit
try:
label_list, value_list = [list(d) for d in zip(*data)]
except ValueError:
return None
label_list, value_list = flt.set_limit_for_data_to_chart(label_list, limit, value_list)
color_list = get_color_list(len(value_list), limit=limit) if color_list is None else color_list
return {
'labels': label_list,
'datasets': [{'data': value_list, 'backgroundColor': color_list, 'borderColor': '#fff', 'borderWidth': 2}]
}
def data_to_chart_limited(data, limit=10, color_list=None):
try:
label_list, value_list = map(list, zip(*data))
except ValueError:
return None
if limit and len(label_list) > limit:
label_list = label_list[:limit]
label_list.append('rest')
rest_sum = sum(value_list[limit:])
value_list = value_list[:limit]
value_list.append(rest_sum)
if not color_list:
color_list = get_color_list(len(value_list))
result = {
'labels': label_list,
'datasets': [{
'data': value_list,
'backgroundColor': color_list,
'borderColor': color_list,
'borderWidth': 1
}]
}
return result
def data_to_chart(data):
color_list = get_color_list(1) * len(data)
return data_to_chart_limited(data, limit=0, color_list=color_list)
def set_color_list_for_data_to_chart(color_list, value_list):
if not color_list:
color_list = get_color_list(len(value_list))
return color_list
def get_graph_colors():
available_colors = get_color_list(10)
color_list = list(
islice(chain(*repeat(available_colors, 4)), None, None, 4))
return color_list
def get_graph_colors(quantity):
return get_color_list(quantity, quantity) if quantity > 0 else []
