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List:       koffice-devel
Subject:    Re: karbon, kpainter and kword
From:       Dirk_Schönberger <dirk.schoenberger () sz-online ! de>
Date:       2003-06-17 18:43:28
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> > so drawGlyph need a QWMatrix parameter
> >
> > void drawGylph (QWMatrix&)

> It's more usual to have the matrix as part of the "state" of the painter,
> like QPainter has worldMatrix().
> That way you can call translate/scale/rotate methods on the painter
> (kword, kpresenter and kotext use painter translation a lot).

KPainter already manages internal state, including a CTM.
The drawGlyph with matrix was introduced because I think it would be a heavy
used call.
So instead of

KPainter kp;
QWMatrix x1 = QWMatrix().scale (.99,1);
QWMatrix x2 = QWMatrix().scale (.98,1);
kp.gsave()
kp.append (x1)
kp.drawGlyph (12);
kp.grestore();
kp.gsave()
kp.scale (x2)
kp.drawGlyph (13);
kp.grestore();

you could do a

KPainter kp;
QWMatrix x1 = QWMatrix().scale (.99,1);
QWMatrix x2 = QWMatrix().scale (.98,1);
kp.drawGlyph (12, x1);
kp.drawGlyph (13, x2);

Regards
Dirk


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