"Pie with nested legend"
from reportlab.graphics.charts.legends import Legend
from reportlab.graphics.charts.piecharts import Pie
from reportlab.graphics.shapes import Drawing, _DrawingEditorMixin
from reportlab.lib.colors import black, white, PCMYKColor

class PieChart05(_DrawingEditorMixin,Drawing):
	'''
		Chart Features
		--------------

		- multiple columns with different headings.
		the legend.colorNamePairs is a list of tuples where is tuple is made of (color, text)
		if the legend row has no swatch then simple provide None as the value for the color
		[(red, ('Relative Value','41.6%')), (None, ('Mortgage','20')), ... 
		(black, ('Events Driven','30.0%')), etc]
    '''
	def __init__(self,width=400,height=200,*args,**kw):
		Drawing.__init__(self,width,height,*args,**kw)
		# font
		fontName = 'Helvetica'
		self._boldFontName = boldFontName =  'Helvetica'
		# chart
		self._add(self,Pie(),name='chart',validate=None,desc=None)
		#slices
		self.chart.slices.strokeColor       = white
		self.chart.slices.strokeWidth       = 0.25
		#colours
		colorsList = [PCMYKColor(100,0,90,50),PCMYKColor(65.1,72.16,33.33,14.51),PCMYKColor(50.98,28.63,41.18,1.18),PCMYKColor(30.2,30.59,16.08,0),PCMYKColor(0,0,0,0),PCMYKColor(0,0,0,0),PCMYKColor(0,0,0,0)]
		for i, color in enumerate(colorsList[:4]): self.chart.slices[i].fillColor = color
		#legend
		self._add(self,Legend(),name='legend',validate=None,desc=None)
		self.legend.alignment        ='right'
		self.legend.boxAnchor='nw'
		self.legend.fontName         = fontName
		self.legend.fontSize         = 6
		self.legend.strokeWidth      = 0
		self.legend.strokeColor      = None
		self.legend.dy               = 6
		self.legend.dx               = 6
		self.legend.dxTextSpace      = 4    #space between swatch and text
		self.legend.deltay           = 6   #space between legend rows
		self.legend.columnMaximum    = 99
		self.legend.variColumn       = 1 #
		self.legend.deltax           = 175
		#sample data
		self.chart.data = [41.600000000000001, 29.999999999999996, 26.400000000000002, 2.0]
		self.chart.width            = 150
		self.chart.height           = 150
		self.chart.x                = 200
		self.chart.y                = 25
		self.chart.slices[0].fillColor             = PCMYKColor(100,60,0,50,alpha=100)
		self.chart.slices[1].fillColor             = PCMYKColor(100,0,90,50,alpha=100)
		self.chart.slices[2].fillColor             = PCMYKColor(0,100,100,40,alpha=100)
		self.chart.slices[3].fillColor             = PCMYKColor(66,13,0,22,alpha=100)
		self.legend.colorNamePairs = [(PCMYKColor(100,60,0,50,alpha=100), (u'Relative Value', '41.6%')), (None, (u' Mortgage Arbitrage', '10.2%')), (None, (u' Relative Value Credit', '8.7%')), (None, (u' Equity L/S High Hedge', '6.1%')), (None, (u' Convertible Arbitrage', '4.9%')), (None, (u' Fixed Income Arbitrage', '3.9%')), (None, (u' Statistical Arbitrage', '3.1%')), (None, (u' Volatility Arbitrage', '2.5%')), (None, (u' Closed End Fund', '1.7%')), (None, (u' Other Arbitrage', '0.5%')), (PCMYKColor(100,0,90,50,alpha=100), (u'Event Driven', '30.0%')), (None, (u' Restructurings and Value', '13.8%')), (None, (u' Merger/Risk Arbitrage', '5.6%')), (None, (u' Event Driven Credit', '4.9%')), (None, (u' Distressed', '3.7%')), (None, (u' Private Placements', '2.0%')), (PCMYKColor(0,100,100,40,alpha=100), (u'Opportunistic', '26.4%')), (None, (u' Equity L/S Opportunistic', '18.8%')), (None, (u' Macro', '3.7%')), (None, (u' Other Opportunistic', '2.1%')), (None, (u' CTA/Managed Futures', '1.8%')), (PCMYKColor(66,13,0,22,alpha=100), (u'Cash', '2.0%'))]
		self.legend.y              = 185
		self.legend.x              = 12

if __name__=="__main__": #NORUNTESTS
	PieChart05().save(formats=['pdf'],outDir='.',fnRoot=None)