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#include "elidedlabel.h"
#include <QDebug>
#include <QPainter>
#include <QResizeEvent>
#include <QStyle>
ElidedLabel::ElidedLabel(QWidget *parent)
: QLabel(parent), m_elide_mode(Qt::ElideRight) {
setSizePolicy(QSizePolicy::Ignored, QSizePolicy::Preferred);
}
ElidedLabel::ElidedLabel(const QString &txt, QWidget *parent)
: QLabel(txt, parent), m_elide_mode(Qt::ElideRight) {
setSizePolicy(QSizePolicy::Ignored, QSizePolicy::Preferred);
}
ElidedLabel::ElidedLabel(const QString &txt, Qt::TextElideMode elideMode,
QWidget *parent)
: QLabel(txt, parent), m_elide_mode(elideMode) {
setSizePolicy(QSizePolicy::Ignored, QSizePolicy::Preferred);
}
void ElidedLabel::setText(const QString &txt) {
QLabel::setText(txt);
cacheElidedText(geometry().width());
setSizePolicy(QSizePolicy::Ignored, QSizePolicy::Preferred);
}
void ElidedLabel::cacheElidedText(int w) {
m_cached_elided_text = fontMetrics().elidedText(
text(), m_elide_mode, w, (buddy() == nullptr) ? 0 : Qt::TextShowMnemonic);
}
void ElidedLabel::resizeEvent(QResizeEvent *e) {
QLabel::resizeEvent(e);
cacheElidedText(e->size().width());
}
void ElidedLabel::paintEvent(QPaintEvent *e) {
if (m_elide_mode == Qt::ElideNone) {
QLabel::paintEvent(e);
} else {
QPainter p(this);
p.drawText(0, 0, geometry().width(), geometry().height(),
QStyle::visualAlignment(text().isRightToLeft() ? Qt::RightToLeft
: Qt::LeftToRight,
alignment()) |
((buddy() == nullptr) ? 0 : Qt::TextShowMnemonic),
m_cached_elided_text);
}
}
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