QTextEdit in QGraphicsScene: How get text printed in correct point size?

**fabianr** · 29th May 2009, 23:28

Hi there,

I have a QGraphicsScene with an embedded QTextEdit widget. How do I have to configure the scene so that the text gets the expected size when being printed on paper?

As far as I can see the TextEdit widget takes a point size for the font, but the actually printed size of this text depends on the scene size. The smaller I set the scene size, the larger the text will be printed.

I know that one point corresponds to 1/72 inch. But I have no idea how the point corresponds to the geometry of the text widget (and thus to the scene coordinate system).

Here is how I currently setup the scene:

Qt Code:

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// Create scene  (ratio of DIN A4)
    scene = new QGraphicsScene();
    scene->setSceneRect(0, 0, 210, 297);
 
    // Set scene in view
    ui->graphicsView->setScene(scene);
    ui->graphicsView->setSceneRect(0, 0, 210, 297);
 
    // Populate scene
    QTextEdit *pTextEdit = new QTextEdit(tr("Hallo <b>Fett</b>"));
    pTextEdit->setFontPointSize(10);
    pTextEdit->setFontFamily("Arial");
    pTextEdit->setGeometry(QRect(20, 20, 80, 20));
    QGraphicsProxyWidget *pProxy = scene->addWidget(pTextEdit);

// Create scene  (ratio of DIN A4)
    scene = new QGraphicsScene();
    scene->setSceneRect(0, 0, 210, 297);

    // Set scene in view
    ui->graphicsView->setScene(scene);
    ui->graphicsView->setSceneRect(0, 0, 210, 297);

    // Populate scene
    QTextEdit *pTextEdit = new QTextEdit(tr("Hallo <b>Fett</b>"));
    pTextEdit->setFontPointSize(10);
    pTextEdit->setFontFamily("Arial");
    pTextEdit->setGeometry(QRect(20, 20, 80, 20));
    QGraphicsProxyWidget *pProxy = scene->addWidget(pTextEdit);

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Thanks for any help!

bye,
Fabian