public QImage resizeImage(QImage image, QSize newSize) {
if (image.size() == newSize) return image;
QImage newImage = new QImage(newSize, QImage.Format.Format_RGB32);
newImage.fill(new QColor(Qt.GlobalColor.white).rgb());
QPainter painter = new QPainter(newImage);
painter.drawImage(new QPoint(0, 0), image);
painter.end();
return newImage;
}
public boolean openImage(String fileName) {
QImage loadedImage = new QImage();
if (!loadedImage.load(fileName)) return false;
QSize newSize = loadedImage.size().expandedTo(size());
loadedImage = resizeImage(loadedImage, newSize);
image = loadedImage;
modified = false;
update();
return true;
}
public void print() {
QPrinter printer = new QPrinter(QPrinter.PrinterMode.HighResolution);
QPrintDialog printDialog = new QPrintDialog(printer, this);
if (printDialog.exec() == QDialog.DialogCode.Accepted.value()) {
QPainter painter = new QPainter(printer);
QRect rect = painter.viewport();
QSize size = image.size();
size.scale(rect.size(), Qt.AspectRatioMode.KeepAspectRatio);
painter.setViewport(rect.x(), rect.y(), size.width(), size.height());
painter.setWindow(image.rect());
painter.drawImage(0, 0, image);
painter.end();
}
}