#include "ElidedLabel.h"

#include <QDebug>
#include <QPainter>
#include <QResizeEvent>

ElidedLabel::ElidedLabel(QWidget* parent, Qt::WindowFlags f)
    : QLabel(parent, f)
    , elideMode_(Qt::ElideRight)
{
	// setSizePolicy(QSizePolicy::Ignored, QSizePolicy::Preferred);
}

ElidedLabel::ElidedLabel(const QString& txt, QWidget* parent, Qt::WindowFlags f)
    : QLabel(txt, parent, f)
    , elideMode_(Qt::ElideRight)
{
}

ElidedLabel::ElidedLabel(const QString& txt, Qt::TextElideMode elideMode, QWidget* parent, Qt::WindowFlags f)
    : QLabel(txt, parent, f)
    , elideMode_(elideMode)
{
}

void ElidedLabel::setText(const QString& txt)
{
	QLabel::setText(txt);
	cacheElidedText(geometry().width());
}

void ElidedLabel::cacheElidedText(int w)
{
	cachedElidedText = fontMetrics().elidedText(text(), elideMode_, w, Qt::TextShowMnemonic);
}

void ElidedLabel::resizeEvent(QResizeEvent* e)
{
	QLabel::resizeEvent(e);
	cacheElidedText(e->size().width());
}

void ElidedLabel::paintEvent(QPaintEvent* e)
{
	if(elideMode_ == Qt::ElideNone)
	{
		QLabel::paintEvent(e);
	}
	else
	{
		QPainter p(this);
		p.drawText(0, 0, geometry().width(), geometry().height(), alignment(), cachedElidedText);
	}
}