Coordinates for QGraphicsView

[SGaist]

Hi,

When are you requesting these values ?

[leinad]

In the constructor

[SGaist]

Until the widgets are shown they have no "physical" dimensions.

Also note that the size of the scene and the view do not necessarily match unless you made it so.

[leinad]

This is what I did when I created the scene.
//create the scene
scene_ = new QGraphicsScene(sceneStartCornerX_,
sceneStartCornerY_,
sceneEndCornerX,
sceneEndCornerY,
ui->testGridGraphicsView);

ui->testGridGraphicsView->setScene(scene_); //attach the scene to the view (QGraphicsView)

//smooth graphics
ui->testGridGraphicsView->setRenderHints(QPainter::SmoothPixmapTransform | QPainter::Antialiasing | QPainter::TextAntialiasing);

[leinad]

What do you mean until the widgets are shown? I assume the user must click on the tab. Is there a way to force it to see the dimensions without clicking on the tab?

[SGaist]

Why not just build a "size less" scene ?

[leinad]

You mean don't set the dimensions when setting up the scene?
scene = new QGraphicsScene(ui->testGridGraphicsView);

I did that with the same results.

[SGaist]

How are you placing the items on your scene ?

[leinad]

Programmatically using dimensions. It looks fine but skewed because the original sizes are incorrect.

[SGaist]

Please provide a minimal compilable example that reproduces that issue.

[leinad]

Thanks, you actually helped me resolve the issue. I created a signal/slot when the tab is selected which now shows the view. At that point I get the coordinates and they show properly.