"Chart with background color"
from reportlab.lib.colors import purple, PCMYKColor, black, pink, green, blue
from reportlab.graphics.charts.lineplots import LinePlot
from reportlab.graphics.charts.legends import LineLegend
from reportlab.graphics.shapes import Drawing, _DrawingEditorMixin, Rect
from reportlab.lib.validators import Auto
from reportlab.pdfbase.pdfmetrics import stringWidth, EmbeddedType1Face, registerTypeFace, Font, registerFont
from reportlab.graphics.charts.axes import XValueAxis, YValueAxis, AdjYValueAxis, NormalDateXValueAxis

class LineChart02(_DrawingEditorMixin,Drawing):
    '''
        Chart Features
        ============

        There is a canvas background which is a light blue rectangle with same size and dimension of the drawing:

        - **background.fillColor** sets the CMYK fill color
        - **background.height**, **background.width**, **background.x**, and **background.y** define the size and position of the fill.
        - **background.strokeColor** sets the color of the dotted border.
        - **background.strokeDashArray** sets the type of dash. (3,2) gives the relative lengths of the filled and empty space.
        - **background.strokeWidth** gives the weight of the border
        - Note also that **legend.colorNamePairs** is set automatically based on the colors and names of the lines. This makes a lot of sense compared to other examples in which these are defined separately and may differ from the lines they are associated with.
'''
    def __init__(self,width=400,height=200,*args,**kw):
        Drawing.__init__(self,width,height,*args,**kw)
        fontName = 'Helvetica'
        self.width                  = 298
        self.height                 = 164
        self._add(self,LinePlot(),name='chart',validate=None,desc=None)
        self.chart.xValueAxis = NormalDateXValueAxis()
        self.background = Rect(0, 0, self.width, self.height, strokeWidth=0, fillColor=PCMYKColor(0,0,10,0))
        self._add(self,LineLegend(),name='legend',validate=None,desc=None)
        self.chart.yValueAxis.visibleGrid           = 1
        self.chart.yValueAxis.visibleAxis           = 0
        self.chart.yValueAxis.visibleTicks          = 0
        self.chart.yValueAxis.labels.fontName       = fontName
        self.chart.yValueAxis.labels.fontSize       = 8
        self.chart.yValueAxis.labelTextFormat       = '%0.0f'
        self.chart.yValueAxis.strokeWidth           = 0
        self.chart.yValueAxis.gridStrokeWidth       = 0.25
        self.chart.yValueAxis.labels.rightPadding   = 5
        self.chart.yValueAxis.maximumTicks          = 15
        self.chart.yValueAxis.rangeRound            ='both'
        self.chart.yValueAxis.avoidBoundFrac        = 0.1
        self.chart.yValueAxis.labels.dx             = 3
        self.chart.yValueAxis.forceZero             = 1
        self.chart.xValueAxis.labels.boxAnchor      = 'autox'
        self.chart.xValueAxis.xLabelFormat          = '{yy}'
        self.chart.xValueAxis.labels.fontName       = fontName
        self.chart.xValueAxis.labels.fontSize       = 8
        self.chart.xValueAxis.strokeWidth           = 0
        self.chart.xValueAxis.visibleAxis           = 0
        self.chart.xValueAxis.visibleTicks           = 0
        self.chart.xValueAxis.labels.rightPadding   = 2
        self.chart.xValueAxis.maximumTicks          = 30
        self.chart.xValueAxis.forceFirstDate        = 1
        self.legend.colorNamePairs   =  Auto(obj=self.chart)
        self.legend.x                = 6
        self.legend.y                = 30
        self.legend.dx               = 6
        self.legend.dy               = 10
        self.legend.fontName         = fontName
        self.legend.fontSize         = 8
        self.legend.alignment        ='right'
        self.legend.columnMaximum    = 3
        self.legend.dxTextSpace      = 4
        self.legend.variColumn       = 1
        self.legend.boxAnchor        = 'nw'
        self.legend.deltay           = 10
        self.legend.autoXPadding     = 65
        # sample data
        self.chart.data = [[(19910301, 94.260000000000005), (19910301, 102.25), (19920301, 101.47), (19930301, 134.84999999999999), (19940301, 121.52), (19950301, 145.87), (19960301, 166.0), (19970301, 172.91), (19980301, 212.83000000000001), (19990301, 391.86000000000001), (20000301, 267.38999999999999), (20010301, 218.22), (20020301, 161.50999999999999), (20030301, 211.46000000000001), (20040301, 245.16), (20050301, 278.97000000000003), (20060301, 337.45999999999998), (20070301, 392.66000000000003), (20080301, 357.25)], [(19910301, 94.319999999999993), (19910301, 100.36), (19920301, 87.530000000000001), (19930301, 109.78), (19940301, 114.98999999999999), (19950301, 128.38999999999999), (19960301, 133.13999999999999), (19970301, 136.24000000000001), (19980301, 166.84999999999999), (19990301, 216.41), (20000301, 163.62), (20010301, 123.68000000000001), (20020301, 104.19), (20030301, 138.03), (20040301, 160.78), (20050301, 182.69999999999999), (20060301, 215.40000000000001), (20070301, 250.84), (20080301, 230.37)]]
        sNames = 'Shell Transport & Trading', 'Liberty International'
        for i in range(len(self.chart.data)): self.chart.lines[i].name=sNames[i]
        self.chart.lines[0].strokeColor = PCMYKColor(100,0,90,50,alpha=100)
        self.chart.lines[1].strokeColor = PCMYKColor(0,100,100,40,alpha=100)
        self.chart.xValueAxis.subGridStrokeColor      = black
        self.chart.yValueAxis.gridStrokeColor         = PCMYKColor(100,100,100,100,alpha=100)
        self.background.strokeColor      = black
        self.chart.strokeWidth     = 1
        self.chart.yValueAxis.visible                 = 1
        self.chart.yValueAxis.strokeColor             = black
        self.chart.yValueAxis.labelTextScale          = 1
        self.chart.yValueAxis.labels.fillColor        = black
        self.background.fillOpacity      = 0.5
        self.background.strokeWidth      = 3
        self.background.strokeDashArray  = (3, 2)
        self.height      = 164
        self.chart.width           = 265
        self.chart.height          = 95
        self.chart.y               = 55
        self.chart.x               = 23
        self.chart.lines.strokeWidth     = 2
        self.background.fillColor        = PCMYKColor(66,13,0,22,alpha=30)
        self.background.x                = 0

if __name__=="__main__": #NORUNTESTS
    LineChart02().save(formats=['pdf'],outDir='.',fnRoot=None)