QGraphicsViev / QgraphicsScene size

[Estel]

hello
I want to write something independent from device screen size. I want set position of icons on QGraphicsScene. I have to know the scene size in order to all icons set on the device screen (without scrollbar). Unfortunately I have no idea how to do it - how to get size of scene that cover screen. Could you help me?

[axeljaeger]

Use QDesktopWidget.

[divanov]

QApplication::desktop()->availableGeometry(QCursor::pos());

[Estel]

Yours code give me size of the screen, but how to translate this to QGraphicsScene?

I have something like this:

QGraphicsScene *scene = new QGraphicsScene();
w.addScene(scene); //w is QGraphicsView
Icons *i1=new Icons(QPixmap(":/guitestm2/nuclear.png"));// Icons is my class inherit QGraphicsWidget
i1->setGeometry(QRectF(0, 0, 50, 50));
scene->addItem(i1);
w.showMaximized();

And for examplme I have no idea how to put i1 to right - down corner of the screen

[divanov]

i1->setPos((QApplication::desktop()->availableGeometry(QCursor::pos())).bottomRight() - QPoint(i1->width(), i1->height()));

[Estel]

Unfortunately your code did not produce property value.
Your code give x=189 y=269 and the icon unseen on the screen, i have to use scrollbars to see it.
The property( I check it by hand after few try) value for right bottom corner is aproximately x=150 y=180 for icon width=height=50

[divanov]

Unfortunately your code did not produce property value.
Your code give x=189 y=269 and the icon unseen on the screen, i have to use scrollbars to see it.
The property( I check it by hand after few try) value for right bottom corner is aproximately x=150 y=180 for icon width=height=50

Do you have anything else except of QGraphicsView inside your window? Is 239x319 correct available geometry?

[Estel]

I have only GraphicsView, I have put it using qt designer and the sizePolicy is expanding.
For my phone coordinates of right-bottom corner in graphicsScene are(aproximately, +/- 5) x=205 y=237, I have just added some item and check when it disapeard from the screen.

[divanov]

#include <QApplication>
#include <QGraphicsView>
#include <QGraphicsScene>

int main(int argc, char *argv[])
{
    QApplication app(argc, argv);

    QGraphicsScene scene;

    QGraphicsView view(&scene);
    view.show();

    QRectF geometry = view.contentsRect();
    scene.addLine(QLineF(geometry.topLeft(), geometry.bottomRight()));
    scene.addLine(QLineF(geometry.bottomLeft(), geometry.topRight()));

    return app.exec();
}

[Estel]

QRectF geometry = view.contentsRect();

It works excelent
Thank you very much for yours time.