HTML rendering in QStyledItemDelegate sub-class

iharob

I need html rendering in a custom item delegate. What i have already done

Write it using QTextDocument, setHtml and QTextDocument::draw.

Split QTextDocument into blocks using QTextDocument::begin() and draw each block using QTextBlock::charFormat() to setup the QPainter.

Why the dont work:

Solution 1, it works, but since there is no text-overflow css property, I can't use ellipsis for long lines.

Solution 2, it also works, and i can manually use QFontMetrics::elidedText() so this solution is better but, the QTextCharFormat has wrong font information "althought the foreground and background colors are correct", for instance I used the <b></b> tag, so it should be bold but it isn't .

Here is relevant code for the second solution, thank you for your help in advance.

@static void
textDocumentDrawContents(QPainter *painter, const QTextDocument *document,
int width, bool selected, const QPalette &palette)
{
QTextBlock it;
QAbstractTextDocumentLayout *layout;

if ((painter == NULL) || (document == NULL))
    return;

layout = document->documentLayout();
if (layout == NULL)
    return;

QVector<QTextFormat> formats(document->allFormats());

for (it = document->begin() ; it != document->end() ; it = it.next())
{
    int           index;
    const QRectF &rectangle(layout->blockBoundingRect(it));

    index = it.charFormatIndex();
    if ((index < 0) || (index >= formats.count()))
        continue;

    QTextFormat textformat(formats.at(index));
    if (textformat.isCharFormat() == false)
        continue;

    QString         text;
    QTextCharFormat format(textformat.toCharFormat());
    const QBrush   &foreground(format.foreground());
    const QFont    &font(format.font());
    QFontMetrics    metrics(font);

    text = metrics.elidedText(it.text(), Qt::ElideRight, width - 8);

    painter->setFont(font);
    if (selected == true)
        painter->setPen(palette.color(QPalette::HighlightedText));
    else
        painter->setPen(foreground.color());

    painter->drawText(rectangle, text);
}

}

void
renderHtml(QPainter *painter, const QStyleOptionViewItem &option, QTextDocument *document)
{
const QRect &frame(option.rect);
bool selected;
bool active;

if (painter == NULL)
    return;

selected  = ((option.state & QStyle::State_Selected) == QStyle::State_Selected);
active    = ((option.state & QStyle::State_Active) == QStyle::State_Active);
selected  = ((selected == true) && (active == true));

painter->save();
painter->translate(frame.left(), frame.top()); 

textDocumentDrawContents(painter, document, frame.width(), selected, option.palette);

painter->restore();

}@

iharob

Oh by the way. I am aware of QWebView, but I want a QWebViewLESS solution.