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#include "elidinglabel.h"
#include <QFontMetrics>
#include <QPainter>
#include <QStyle>
#if QT_VERSION < QT_VERSION_CHECK(5, 11, 0)
#define horizontalAdvance width
#endif
/*!
\class Utils::ElidingLabel
\brief The ElidingLabel class is a label suitable for displaying elided
text.
*/
namespace Utils {
ElidingLabel::ElidingLabel(QWidget *parent)
: QLabel(parent), m_elideMode(Qt::ElideRight)
{
setSizePolicy(QSizePolicy(QSizePolicy::Ignored, QSizePolicy::Preferred, QSizePolicy::Label));
}
ElidingLabel::ElidingLabel(const QString &text, QWidget *parent)
: QLabel(text, parent), m_elideMode(Qt::ElideRight)
{
setSizePolicy(QSizePolicy(QSizePolicy::Ignored, QSizePolicy::Preferred, QSizePolicy::Label));
}
Qt::TextElideMode ElidingLabel::elideMode() const
{
return m_elideMode;
}
void ElidingLabel::setElideMode(const Qt::TextElideMode &elideMode)
{
m_elideMode = elideMode;
update();
}
void ElidingLabel::paintEvent(QPaintEvent *)
{
const int m = margin();
QRect contents = contentsRect().adjusted(m, m, -m, -m);
QFontMetrics fm = fontMetrics();
QString txt = text();
if (txt.length() > 4 && fm.horizontalAdvance(txt) > contents.width()) {
setToolTip(txt);
txt = fm.elidedText(txt, m_elideMode, contents.width());
} else {
setToolTip(QString());
}
int flags = QStyle::visualAlignment(layoutDirection(), alignment()) | Qt::TextSingleLine;
QPainter painter(this);
drawFrame(&painter);
painter.drawText(contents, flags, txt);
}
} // namespace Utils
