#include "imagelabel.h"

ImageLabel::ImageLabel(QWidget *parent) : QLabel(parent) {
	this->setMinimumSize(1, 1);
	setScaledContents(false);
}

void ImageLabel::setPixmap(const QPixmap &p) {
	pix = p;
	QLabel::setPixmap(scaledPixmap());
}

int ImageLabel::heightForWidth(int width) const {
	return pix.isNull() ? this->height() : ((qreal) pix.height() * width) / pix.width();
}

QSize ImageLabel::sizeHint() const {
	int w = this->width();
	return QSize(w, heightForWidth(w));
}

QPixmap ImageLabel::scaledPixmap() const {
	return pix.scaled(this->size(), Qt::KeepAspectRatio, Qt::SmoothTransformation);
}

void ImageLabel::resizeEvent(QResizeEvent *e) {
	if (!pix.isNull())
		QLabel::setPixmap(scaledPixmap());
}