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43 lines
1.1 KiB
C++
43 lines
1.1 KiB
C++
#include <QImageReader>
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#include <QDesktopServices>
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#include <QFileInfo>
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#include <QMouseEvent>
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#include "thumbnail.h"
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static QSize thumbnailSize(const QSize &size, int limit)
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{
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int width, height;
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if (size.width() > size.height()) {
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width = qMin(size.width(), limit);
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qreal ratio = size.width() / (qreal)size.height();
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height = (int)(width / ratio);
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} else {
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height = qMin(size.height(), limit);
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qreal ratio = size.height() / (qreal)size.width();
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width = (int)(height / ratio);
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}
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return QSize(width, height);
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}
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Thumbnail::Thumbnail(const QString &path, int limit, QWidget *parent)
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: QLabel(parent)
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{
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QImageReader reader(path);
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reader.setAutoTransform(true);
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reader.setScaledSize(thumbnailSize(reader.size(), limit));
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setPixmap(QPixmap::fromImage(reader.read()));
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setCursor(Qt::PointingHandCursor);
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setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Fixed);
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_path = QFileInfo(path).absoluteFilePath();
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}
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void Thumbnail::mousePressEvent(QMouseEvent *event)
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{
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if (event->button() == Qt::LeftButton)
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QDesktopServices::openUrl(QUrl::fromLocalFile(_path));
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}
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