1、水平翻转

void ImageViewer::horFilp(){image = image.mirrored(true, false);imageLabel->setPixmap(QPixmap::fromImage(image));}

2、垂直翻转

void ImageViewer::verFilp(){image = image.mirrored(false, true);imageLabel->setPixmap(QPixmap::fromImage(image));}

3、顺时针旋转

void ImageViewer::clockwise(){QMatrix matrix;matrix.rotate(90.0);image = image.transformed(matrix,Qt::FastTransformation);imageLabel->setPixmap(QPixmap::fromImage(image));}

4、逆时针旋转

void ImageViewer::anticlockwise(){QMatrix matrix;matrix.rotate(-90.0);image = image.transformed(matrix,Qt::FastTransformation);imageLabel->setPixmap(QPixmap::fromImage(image));}

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