Added printing requirements

reportlab/graphics/charts/areas.py

@@ -0,0 +1,94 @@
+#Copyright ReportLab Europe Ltd. 2000-2012
+#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__=''' $Id$ '''
+__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
+from reportlab.lib.colors import grey
+
+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