CODEWITHSUNDEEP
qtqgraphicsview
SaranSiva
SaranSiva

Reputation: 1

Qt QGraphicsView translate BackgroundBrush

I have created a view class derived from QGraphicsView and set the backgroundBrush as an image. I want to translate the backgroundBrush. I have tried the following 

// graphicsView derived from QGraphicsView 
graphicsView->backgroundBrush().transform().translate(moveX, moveY);

But it is not transforming the background brush.

Upvotes: 0

Views: 198

Answers (1)

alexisdm
alexisdm

Reputation: 29886

backgroundBrush() and transform() are defined as const member functions, meaning they don't modify the object on which they are called.

You need to call setBackgroundBrush() and setTransform() to modify these properties:

QBrush brush = graphicsView->backgroundBrush();
brush.setTransform(QTransform::fromTranslate(moveX, moveY));
graphicsView->setBackgroundBrush(brush);

Upvotes: 1

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