Qt-interest Archive, May 2008
QGraphicsScene on another QGraphicsScene
Message 1 in thread
Hi!
Is there any way to show contents of one QGraphicsScene on another
QGraphicsScene? I tryed to write some code to achieve that:
QGraphicsView *parentView = new QGraphicsView(this);
QGraphicsScene *parentScene = new QGraphicsScene(QRectF(0.0, 0.0,
500.0, 500.0), this);
parentView->setScene(parentScene);
QGraphicsView *childView = new QGraphicsView;
QGraphicsScene *childScene = new QGraphicsScene(QRectF(0.0, 0.0,
250.0, 250.0), childView);
childView->setScene(childScene);
QGraphicsProxyWidget *w = parentScene->addWidget(childView);
w->setPos(100.0, 100.0);
w->resize(300.0, 300.0);
childScene->addRect(QRectF(0.0, 0.0, 100.0, 100.0)); // this rect I
can see
w = childScene->addWidget(new QPushButton("Hello!")); // but this
widget I can't see :(
w->setPos(0.0, 0.0);
w->resize(100.0, 100.0);
as result I can see rect, added to child scene, but can't see push
button. Any ideas?
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Message 2 in thread
casper wrote:
> Hi!
>
> Is there any way to show contents of one QGraphicsScene on another
> QGraphicsScene? I tryed to write some code to achieve that:
>
> QGraphicsView *parentView = new QGraphicsView(this);
> QGraphicsScene *parentScene = new QGraphicsScene(QRectF(0.0, 0.0,
> 500.0, 500.0), this);
> parentView->setScene(parentScene);
>
> QGraphicsView *childView = new QGraphicsView;
> QGraphicsScene *childScene = new QGraphicsScene(QRectF(0.0, 0.0,
> 250.0, 250.0), childView);
> childView->setScene(childScene);
>
> QGraphicsProxyWidget *w = parentScene->addWidget(childView);
> w->setPos(100.0, 100.0);
> w->resize(300.0, 300.0);
>
> childScene->addRect(QRectF(0.0, 0.0, 100.0, 100.0)); // this rect I
> can see
>
> w = childScene->addWidget(new QPushButton("Hello!")); // but this
> widget I can't see :(
> w->setPos(0.0, 0.0);
> w->resize(100.0, 100.0);
>
> as result I can see rect, added to child scene, but can't see push
> button. Any ideas?
>
>
So, no ideas at all?
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Message 3 in thread
Casper wrote on Wednesday, 14 May 2008 17:46
> Hi!
>
> Is there any way to show contents of one QGraphicsScene on another
> QGraphicsScene? I tryed to write some code to achieve that:
>
> QGraphicsView *parentView = new QGraphicsView(this);
> QGraphicsScene *parentScene = new QGraphicsScene(QRectF(0.0, 0.0,
> 500.0, 500.0), this);
> parentView->setScene(parentScene);
>
> QGraphicsView *childView = new QGraphicsView;
> QGraphicsScene *childScene = new QGraphicsScene(QRectF(0.0, 0.0,
> 250.0, 250.0), childView);
> childView->setScene(childScene);
>
> QGraphicsProxyWidget *w = parentScene->addWidget(childView);
> w->setPos(100.0, 100.0);
> w->resize(300.0, 300.0);
>
> childScene->addRect(QRectF(0.0, 0.0, 100.0, 100.0)); //
> this rect I
> can see
>
> w = childScene->addWidget(new QPushButton("Hello!")); // but this
> widget I can't see :(
> w->setPos(0.0, 0.0);
> w->resize(100.0, 100.0);
>
> as result I can see rect, added to child scene, but can't see push
> button. Any ideas?
Hi Casper,
I'm not sure what GraphicsView does when two items have exactly the same
size, that is, which order it draws them.
Trying changing the z-order of the push button to ensure that it is in front
of the rectangle, or offset their coordinates.
Hope that helps,
Tony Rietwyk
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