QPainter Cache Possible?

Question

I've Pie Shaped widgets that needs extensive paintings. So I want to cache the QPainter Once it have been painted in paintEvent. and reuse it latter. Is there any direct or hacky way of doing this ?

score 4 · Accepted Answer · answered Sep 12 '11 at 07:27

4

Use a QPixmap as a cache, QPainter can use it to paint onto directly as well.

answered Sep 12 '11 at 07:27

cmannett85

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So I need to set the size of the QPixmap same as the size of Widget ? – Neel Basu Sep 12 '11 at 16:37
Yes. QPixmap is QPaintDevice derived, so think of it as a canvas. – cmannett85 Sep 12 '11 at 18:37

QPainter Cache Possible?

1 Answers1