Because QChart is derived from QGraphicsView, you can also set the setTransformationAnchor() to
QGraphicsView::AnchorUnderMouse and then scale() it. On Mon, Jun 20, 2016 at 10:00 PM, Lorne Sturtevant <dra...@shaw.ca> wrote: > I was able to find a way to zoom centred on the mouse. What I did was > make use of the QChart::plotArea() function. With that function by > using ChartView::wheelEvent(), I could get where in the chart the zoom > is happening. I then did some math and set the new zoom for the chart > by adjusting the range for the chart's x and y axis. > > Fortunately I could do this with the existing API. It would be nice if > there was a cleaner API for doing this though. > > -- > Lorne Sturtevant > Sum Ergo Cogito > > _______________________________________________ > Interest mailing list > Interest@qt-project.org > http://lists.qt-project.org/mailman/listinfo/interest >
_______________________________________________ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
