Delegate hyperlink

[migel]

Hi

I am using below code to draw an html. I need to display text in the item as link, once clicked on a text (not on the item it self) it perform some action. I was using setIndexWidget and QLabel but performance is pretty bad.

An here the question how to make a text clickable ( not the item) to behave like an html link.

Possible ? thanks for help

QSize HyperLinkDelegate::sizeHint(const QStyleOptionViewItem &  option ,
                                  const QModelIndex & index) const
{
    QStyleOptionViewItemV4 optionV4 = option;
    initStyleOption(&optionV4, index);
 
    QTextDocument doc;
    doc.setHtml(optionV4.text);
    doc.setTextWidth(optionV4.rect.width());
    return QSize(doc.idealWidth(), doc.size().height());
}
 
void HyperLinkDelegate::paint(QPainter *painter, const QStyleOptionViewItem &option,
                              const QModelIndex &index) const
{
    QStyleOptionViewItemV4 optionV4 = option;
    initStyleOption(&optionV4, index);
 
    QStyle *style = optionV4.widget? optionV4.widget->style() : QApplication::style();
 
    QTextDocument doc;
    doc.setHtml(optionV4.text);
 
    // Painting item without text
    optionV4.text = QString();
    style->drawControl(QStyle::CE_ItemViewItem, &optionV4, painter);
 
    QAbstractTextDocumentLayout::PaintContext ctx;
 
    // Highlighting text if item is selected
    if (optionV4.state & QStyle::State_Selected)
        ctx.palette.setColor(QPalette::Text, optionV4.palette.color(QPalette::Active, QPalette::HighlightedText));
 
    QRect textRect = style->subElementRect(QStyle::SE_ItemViewItemText, &optionV4);
    painter->save();
    painter->translate(textRect.topLeft());
    painter->setClipRect(textRect.translated(-textRect.topLeft()));
    doc.documentLayout()->draw(painter, ctx);
    painter->restore();
 
}

QSize HyperLinkDelegate::sizeHint(const QStyleOptionViewItem &  option ,
                                  const QModelIndex & index) const
{
    QStyleOptionViewItemV4 optionV4 = option;
    initStyleOption(&optionV4, index);
    
    QTextDocument doc;
    doc.setHtml(optionV4.text);
    doc.setTextWidth(optionV4.rect.width());
    return QSize(doc.idealWidth(), doc.size().height());
}

void HyperLinkDelegate::paint(QPainter *painter, const QStyleOptionViewItem &option,
                              const QModelIndex &index) const
{
    QStyleOptionViewItemV4 optionV4 = option;
    initStyleOption(&optionV4, index);
    
    QStyle *style = optionV4.widget? optionV4.widget->style() : QApplication::style();
    
    QTextDocument doc;
    doc.setHtml(optionV4.text);
    
    // Painting item without text
    optionV4.text = QString();
    style->drawControl(QStyle::CE_ItemViewItem, &optionV4, painter);
    
    QAbstractTextDocumentLayout::PaintContext ctx;
    
    // Highlighting text if item is selected
    if (optionV4.state & QStyle::State_Selected)
        ctx.palette.setColor(QPalette::Text, optionV4.palette.color(QPalette::Active, QPalette::HighlightedText));
    
    QRect textRect = style->subElementRect(QStyle::SE_ItemViewItemText, &optionV4);
    painter->save();
    painter->translate(textRect.topLeft());
    painter->setClipRect(textRect.translated(-textRect.topLeft()));
    doc.documentLayout()->draw(painter, ctx);
    painter->restore();
    
}

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