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[SOLVED] QGraphicsView::translate() does not work

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mc_zitrone

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Friday, August 24th 2007, 9:03pm

[SOLVED] QGraphicsView::translate() does not work

Hello,
i already did some search on google and here, but didn't found anything.
I cannot get QGraphicsView::translate() to work. Even the example "portedcanvas" is not able to translate the view to the left, right or something else. Do I have the wrong understanding of the method? I tried the example on win-qt4.2.3, win-qt4.3.1 and linux-qt.4.3.1. The two former ones even in debug mode. But the translate() has no effect on the view. But I expected it to move in some direction (at least in the example).

Regards,
Martin

This post has been edited 1 times, last edit by "mc_zitrone" (Aug 25th 2007, 12:30am)

maverick_pol

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Saturday, August 25th 2007, 12:21am

RE: QGraphicsView::translate() does not work

Hi,

Could you give me an example of function arguments' values?
Thanks.

Maverick

mc_zitrone

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Saturday, August 25th 2007, 12:29am

RE: QGraphicsView::translate() does not work

Hi, thanks for your answer. With some more hours of work, I did solve it on my own. For some reason, I had to do view->setSceneRect(big numbers) to make the translation work. I called translate() with mousemove delta values calculated in a subclass of QGraphicsView. However, with setSceneRect() my view->scale in a wheelevent of a parent widget didn't work any more. Some tears later I figured out, that if I call scale() from within my SubQGraphicsView (which makes more sense anyway), for some reason it works... :)
I think, I also had to remove the transformAnchor in the view.

However, thanks, and i'll try to mark this thread as solved.
Regards,
Martin