#Copyright ReportLab Europe Ltd. 2000-2004
#see license.txt for license details
#history http://www.reportlab.co.uk/cgi-bin/viewcvs.cgi/public/reportlab/trunk/reportlab/graphics/charts/areas.py
__version__=''' $Id: areas.py 3602 2009-11-26 16:25:50Z meitham $ '''
__doc__='''This module defines a Area mixin classes'''
from reportlab.lib.validators import isNumber,isColor,isColorOrNone,isNoneOrShape
from reportlab.graphics.widgetbase import Widget
from reportlab.graphics.shapes import Rect,Group,Line,Polygon
from reportlab.lib.attrmap import AttrMap,AttrMapValue
class PlotArea(Widget):
"Abstract base class representing a chart's plot area, pretty unusable by itself."
_attrMap = AttrMap(
x = AttrMapValue(isNumber, desc='X position of the lower-left corner of the chart.'),
y = AttrMapValue(isNumber, desc='Y position of the lower-left corner of the chart.'),
width = AttrMapValue(isNumber, desc='Width of the chart.'),
height = AttrMapValue(isNumber, desc='Height of the chart.'),
strokeColor = AttrMapValue(isColorOrNone, desc='Color of the plot area border.'),
strokeWidth = AttrMapValue(isNumber, desc='Width plot area border.'),
fillColor = AttrMapValue(isColorOrNone, desc='Color of the plot area interior.'),
background = AttrMapValue(isNoneOrShape, desc='Handle to background object e.g. Rect(0,0,width,height).'),
debug = AttrMapValue(isNumber, desc='Used only for debugging.'),
)
def __init__(self):
self.x = 20
self.y = 10
self.height = 85
self.width = 180
self.strokeColor = None
self.strokeWidth = 1
self.fillColor = None
self.background = None
self.debug = 0
def makeBackground(self):
if self.background is not None:
BG = self.background
if isinstance(BG,Group):
g = BG
for bg in g.contents:
bg.x = self.x
bg.y = self.y
bg.width = self.width
bg.height = self.height
else:
g = Group()
if type(BG) not in (type(()),type([])): BG=(BG,)
for bg in BG:
bg.x = self.x
bg.y = self.y
bg.width = self.width
bg.height = self.height
g.add(bg)
return g
else:
strokeColor,strokeWidth,fillColor=self.strokeColor, self.strokeWidth, self.fillColor
if (strokeWidth and strokeColor) or fillColor:
g = Group()
_3d_dy = getattr(self,'_3d_dy',None)
x = self.x
y = self.y
h = self.height
w = self.width
if _3d_dy is not None:
_3d_dx = self._3d_dx
if fillColor and not strokeColor:
from reportlab.lib.colors import Blacker
c = Blacker(fillColor, getattr(self,'_3d_blacken',0.7))
else:
c = strokeColor
if not strokeWidth: strokeWidth = 0.5
if fillColor or strokeColor or c:
bg = Polygon([x,y,x,y+h,x+_3d_dx,y+h+_3d_dy,x+w+_3d_dx,y+h+_3d_dy,x+w+_3d_dx,y+_3d_dy,x+w,y],
strokeColor=strokeColor or c or grey, strokeWidth=strokeWidth, fillColor=fillColor)
g.add(bg)
g.add(Line(x,y,x+_3d_dx,y+_3d_dy, strokeWidth=0.5, strokeColor=c))
g.add(Line(x+_3d_dx,y+_3d_dy, x+_3d_dx,y+h+_3d_dy,strokeWidth=0.5, strokeColor=c))
fc = Blacker(c, getattr(self,'_3d_blacken',0.8))
g.add(Polygon([x,y,x+_3d_dx,y+_3d_dy,x+w+_3d_dx,y+_3d_dy,x+w,y],
strokeColor=strokeColor or c or grey, strokeWidth=strokeWidth, fillColor=fc))
bg = Line(x+_3d_dx,y+_3d_dy, x+w+_3d_dx,y+_3d_dy,strokeWidth=0.5, strokeColor=c)
else:
bg = None
else:
bg = Rect(x, y, w, h,
strokeColor=strokeColor, strokeWidth=strokeWidth, fillColor=fillColor)
if bg: g.add(bg)
return g
else:
return None
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