"Doughnut Pie chart with basic legend"
#Autogenerated by ReportLab guiedit do not edit
from reportlab.graphics.shapes import Drawing, _DrawingEditorMixin
from reportlab.graphics.charts.piecharts import Pie
from reportlab.lib.colors import darkblue, midnightblue, lightblue, skyblue, blue, lightskyblue, white
from reportlab.graphics.charts.legends import Legend

class PieChart08(_DrawingEditorMixin,Drawing):
    '''
        Chart Features
        --------------
        
        A pie chart that is transformed into a doughnut chart

        Create an inner radius (in effect creating the doughnut)

        - self.pie.innerRadiusFraction = 0.5
    '''
    def __init__(self,width=400,height=200,*args,**kw):
        Drawing.__init__(self,width,height,*args,**kw)
        self._add(self,Pie(),name='pie',validate=None,desc=None)
        self.pie.innerRadiusFraction = 0.5
        self.pie.data                = [1, 2.3, 1.7, 4.2,1.9]
        self._colours = midnightblue, darkblue, blue, lightblue, skyblue
        self.width       = 500
        self.height      = 200
        self.pie.height              = 200
        self.pie.width               = 200
        self.pie.x                   = 70
        self.pie.strokeWidth         = 1
        self.pie.slices.strokeColor               = white
        self.pie.slices.strokeWidth               = 2
        self._seriesNames = 'Widgets', 'Xenopods', 'Thingamajigs', 'Advanced Widgets', 'Unobtainiums', 'Farouts'
        self._add(self,Legend(),name='legend',validate=None,desc=None)
        self.legend.y              = self.height/2
        self.legend.columnMaximum  = 6
        self.legend.y              = self.height-20
        self.legend.x              = 300
        self.legend.fontName       = 'Helvetica'
        self.legend.fontSize       = 14
        for i,v in enumerate(self.pie.data): self.pie.slices[i].fillColor = self._colours[i]
        self.legend.colorNamePairs = list(zip(self._colours, self._seriesNames))

if __name__=="__main__": #NORUNTESTS
    PieChart08().save(formats=['pdf'],outDir='.',fnRoot=None)