def addAutoLegend(self,chart,offset,num,side='bottom'):
from reportlab.lib.validators import Auto
width = 300
height = 150
legend = Legend()
if side == 'bottom':
legend.x = offset[0]-15
legend.dx = 20
legend.dy = 5
legend.y = offset[1]-25
legend.deltax = None
legend.autoXPadding = 35
legend.deltay = 5
legend.boxAnchor = 'nw'
legend.dxTextSpace = 5
legend.columnMaximum = (num/3)
if num%3 >0:
legend.columnMaximum += 1
legend.variColumn = True
elif side == 'right':
legend.x = offset[0]+offset[2]+40
legend.dx = 20
legend.dy = 5
legend.y = offset[1]+offset[3]-15
legend.deltax = None
legend.deltay = 5
legend.boxAnchor = 'nw'
legend.dxTextSpace = 5
legend.columnMaximum = 9
legend.colorNamePairs=Auto(chart=chart)
return legend
def create_bar(self,
data_list,
label_x_axis,
contain,
y_label=None,
x_label=None,
bar_width=520,
bar_height=100,
draw_width=520,
draw_height=200,
user_color=None,
fontName="Times-Roman",
fontSize=6,
x_angle=0,
bar_space=0):
d = Drawing(width=draw_width, height=draw_height)
bar = VerticalBarChart()
bar.width = bar_width
bar.height = bar_height
bar.y = bar.height - (bar_height / 4)
bar.strokeColor = colors.black
bar.barLabelFormat = '%s'
bar.barLabels.nudge = 7
bar.barLabels.fontSize = fontSize
################# X AXIS PROPERTIES #################
bar.categoryAxis.labels.dx = 0
bar.categoryAxis.labels.angle = x_angle
bar.categoryAxis.labels.boxAnchor = 'autox'
bar.categoryAxis.labels.fontSize = fontSize
bar.categoryAxis.labels.fontName = self.master_font
bar.categoryAxis.strokeWidth = 0.25
bar.categoryAxis.tickDown = -(bar.height)
bar.categoryAxis.categoryNames = label_x_axis
labX = Label()
labX.boxAnchor = 'ne'
labX.dx = bar.width * 2.15
labX.dy = bar.height
labX.fontName = fontName
labX.fontSize = fontSize
labX.setText(x_label)
d.add(labX)
#####################################################
################# Y AXIS PROPERTIES #################
bar.valueAxis.forceZero = 1
bar.valueAxis.labels.fontSize = fontSize
bar.valueAxis.labels.fontName = fontName
bar.valueAxis.rangeRound = 'both'
bar.valueAxis.valueMin = 0
bar.valueAxis.visibleGrid = 1
bar.valueAxis.visibleAxis = 1
bar.valueAxis.labels.dx = -10
labY = Label()
labY.boxAnchor = 'autox'
labY.dy = bar.y + (bar.height / 1.5)
labY.dx = bar.x - 30
labY.angle = 90
labY.fontName = fontName
labY.fontSize = fontSize
labY.setText(y_label)
d.add(labY)
#####################################################
bar.barSpacing = bar_space
# bar.groupSpacing = 3
bar.data = data_list
# print len(data_list)
# print len(contain)
if user_color != None:
usage_color = user_color
else:
random_range = [randint(0, 100) for i in range(len(contain))]
usage_color = map(
lambda item: PCMYKColor(randint(0, item), randint(0, item),
randint(0, item), randint(0, item)),
random_range)
for i in range(len(data_list)):
bar.bars[i].name = contain[i].upper()
bar.bars[i].fillColor = usage_color[i]
legend = Legend()
# legend.autoXPadding = 10
legend.alignment = 'right'
legend.boxAnchor = 'sw'
legend.dxTextSpace = 10
legend.fontSize = fontSize
legend.fontName = fontName
legend.subCols.minWidth = 55
legend.variColumn = 1
legend.deltay = 15
legend.x = bar.x
legend.colorNamePairs = Auto(obj=bar)
d.add(bar)
d.add(legend)
self.flowables.append(d)
