first commit

2026-04-29 14:10:10 +08:00
commit b28556d43d
1558 changed files with 241386 additions and 0 deletions
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+#include "ImagePreviewer.h"
+#include <QPainter>
+
+ImagePreviewer::ImagePreviewer(QWidget *parent) : QWidget(parent)
+{
+
+}
+
+void ImagePreviewer::setImg(QImage img)
+{
+    m_img = img;
+    repaint();
+}
+
+void ImagePreviewer::paintEvent(QPaintEvent* event)
+{
+    QPainter p(this);
+
+    // p.fillRect(rect(), QBrush(QColor(199, 237, 202)));
+
+    QRectF d = rect();
+    QSizeF s = m_img.size();
+
+    if(d.width() <= s.width() * m_maxScaleMultiple || d.height() <= s.height() * m_maxScaleMultiple) {
+        d.setSize(s.scaled(d.size(), Qt::KeepAspectRatio));
+    }
+    else {
+        d.setWidth(s.width() * m_maxScaleMultiple);
+        d.setHeight(s.height() * m_maxScaleMultiple);
+    }
+
+    d.moveCenter(rect().center());
+
+    p.drawImage(d, m_img);
+}