QHeaderView's text rotation

[MarkoSan]

Dear Sirs and Madams!

I have subclassed QHeaderView, it has some QStringList as model. Now, I would like to rotate column names in QHeaderView. What do I have to do, I am a little bit lost...? I am attaching reference screenshot.

Sincerely,
Marko

B0gSl.png

[Rajesh.Rathod]

Read QMatrix class it can be helpful to you for your requirement...
Here I have given some code hint for you....

QMatrix matrix;
matrix.rotate(angle);
pPainter->setWorldMatrix(matrix, true);

Thanks,

[MarkoSan]

Read QMatrix class it can be helpful to you for your requirement...
Here I have given some code hint for you....

QMatrix matrix;
matrix.rotate(angle);
pPainter->setWorldMatrix(matrix, true);

Thanks,

I suppose this code belongs in reimplemented paintSection, am I right maybe?

[Rajesh.Rathod]

Yes , you are right.

[MarkoSan]

I did that now:

void HeaderViewHorizontal::paintSection(QPainter* painter,
    const QRect& rect,
    int logicalIndex) const
{
    QMatrix matrix;
 
    painter->save();
    matrix.rotate(45);
    painter->setWorldMatrix(matrix);
    painter->restore();
}

void HeaderViewHorizontal::paintSection(QPainter* painter,
    const QRect& rect,
    int logicalIndex) const
{
    QMatrix matrix;

    painter->save();
    matrix.rotate(45);
    painter->setWorldMatrix(matrix);
    painter->restore();
}

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but now the header's texts are not shown at all.

---

Added after 7 minutes:

I've forgotten to call drawText(), here is upgrade:

void HeaderHorizontal::paintSection(QPainter* painter,
    const QRect& rect,
    int logicalIndex) const
{
    QMatrix matrix;
 
//    painter->save();
    matrix.rotate(45);
    painter->setWorldMatrix(matrix);
    painter->drawText(this->rect(),
        this->model()->headerData(logicalIndex,
            Qt::Horizontal).toString());
//    painter->restore();
}

void HeaderHorizontal::paintSection(QPainter* painter,
    const QRect& rect,
    int logicalIndex) const
{
    QMatrix matrix;

//    painter->save();
    matrix.rotate(45);
    painter->setWorldMatrix(matrix);
    painter->drawText(this->rect(),
        this->model()->headerData(logicalIndex,
            Qt::Horizontal).toString());
//    painter->restore();
}

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but now I get all titles at first section. Screenshot attached.horizHeaderTextAtFirstSection.jpg

[Rajesh.Rathod]

You need to create new rectangle and need to move it's centre before calling draw text...

int angle = 90;
QMatrix matrix;
matrix.rotate(angle);
painter->setWorldMatrix(matrix);

QRect new_r(0, 0, rect.height(), rect.width());
switch(angle)
{
case 90:
new_r.moveCenter(QPoint(rect.center().y(), -rect.center().x()-2));
break;

case -90:
default:
new_r.moveCenter(QPoint(-rect.center().y(), rect.center().x()));
break;
}

rect = new_r;

pHeaderView->style()->drawItemText(pPainter, new_r, Qt::AlignLeft,
uniopt.palette, true, uniopt.text);

For more code hint you can refer the code example given in link...
http://qt-apps.org/content/show.php/...content=103154

and you should implement this code in paintVeritcalSection function of given example