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htmldelegate.cpp
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htmldelegate.cpp
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#include "htmldelegate.h"
#include <QTextBlock>
void HtmlDelegate::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);
// doc.setTextWidth(optionV4.rect.width());
// doc.setDefaultFont(optionV4.font);
// doc.setDocumentMargin(0);
/// 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 HtmlDelegate::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());
//int height = doc.documentLayout()->blockBoundingRect(doc.firstBlock()).height();
QFont font(QFont().defaultFamily(),18); // make this bigger, else appears cut off. TODO check why vertical-align:middle; in css does not work
int height = QFontMetrics(font).boundingRect(optionV4.text.length() > 0 ? QString(optionV4.text.at(0)) : "").height();
return QSize(doc.idealWidth(), height);
}