37 lines
811 B
C++
37 lines
811 B
C++
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#include "aspectratiopixmaplabel.h"
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AspectRatioPixmapLabel::AspectRatioPixmapLabel(QWidget *parent) :
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QLabel(parent)
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{
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this->setMinimumSize(1,1);
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setScaledContents(false);
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}
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void AspectRatioPixmapLabel::setPixmap ( const QPixmap & p)
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{
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pix = p;
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QLabel::setPixmap(scaledPixmap());
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}
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int AspectRatioPixmapLabel::heightForWidth( int width ) const
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{
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return pix.isNull() ? this->height() : ((qreal)pix.height()*width)/pix.width();
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}
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QSize AspectRatioPixmapLabel::sizeHint() const
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{
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int w = this->width();
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return QSize( w, heightForWidth(w) );
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}
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QPixmap AspectRatioPixmapLabel::scaledPixmap() const
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{
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return pix.scaled(this->size(), Qt::KeepAspectRatio, Qt::SmoothTransformation);
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}
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void AspectRatioPixmapLabel::resizeEvent(QResizeEvent * e)
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{
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if(!pix.isNull())
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QLabel::setPixmap(scaledPixmap());
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}
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