[reportlab-users] setting title for ?ValueAxis

[Berthold Höllmann]

Hello,

The different *Axis class descriptions in the "Grapics Guide" name a
property "title" as not implemented. I've written "makeTitle"
functions that work with "xValueAxis" and "yValueAxis". "ValueAxis"s
"draw" method would need an additional line:

        g.add(self.makeTitle())

"ValueAxis" would need three more three more "_attrMap" entries:

        fontName = AttrMapValue(isString),
        fontSize = AttrMapValue(isNumber),
        title=AttrMapValue(isString, desc='Axis title')

and it's "__init__" method would need the additional lines:

        self.fontName = STATE_DEFAULTS['fontName']
        self.fontSize = STATE_DEFAULTS['fontSize']
        self.title = ""


makeTitle for "xValueAxis":

    def makeTitle(self):
        lab = Label()
        lab.boxAnchor = 'n'
        lab.fontName = self.fontName
        lab.fontSize = self.fontSize
        lab.dx = (self.scale(self._valueMax) + self.scale(self._valueMin))/2.
        lab.dy = -self.fontSize
        lab.setText(self.title)
        return lab

and for "yValueAxis":

    def makeTitle(self):
        lab = Label()
        lab.boxAnchor = 's'
        lab.fontName = self.fontName
        lab.fontSize = self.fontSize
        lab.dx = -self.fontSize
        lab.dy = (self.scale(self._valueMax) + self.scale(self._valueMin))/2.
        lab.setText(self.title)
        lab.angle = 90
        return lab

(also submitted to sourceforge patches)
Regards
Berthold
-- 
Dipl.-Ing. Berthold Höllmann   __   Address:
hoel@GL-Group.com           G /  \ L Germanischer Lloyd
phone: +49-40-36149-7374    -+----+- Vorsetzen 32/35    P.O.Box 111606
fax  : +49-40-36149-7320      \__/   D-20459 Hamburg    D-20416 Hamburg