我正在尝试将舞台快照中的图像设置为舞台图标。
以下代码演示了它:
import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.image.Image;
import javafx.scene.image.ImageView;
import javafx.scene.image.WritableImage;
import javafx.scene.layout.Background;
import javafx.scene.layout.BackgroundFill;
import javafx.scene.layout.Pane;
import javafx.scene.layout.StackPane;
import javafx.scene.paint.Color;
import javafx.stage.Stage;
import java.io.IOException;
public class IconTest extends Application {
public static void main(String[] args) {
launch(args);
}
@Override
public void start(Stage primaryStage) throws Exception {
Scene scene = new Scene(new StackPane(new ImageView(generateIcon(32))));
primaryStage.setScene(scene);
primaryStage.getIcons().setAll(generateIcon(32));
primaryStage.show();
}
private static Image generateIcon(int dimension) throws IOException {
Pane root = new Pane();
root.setBackground(new Background(new BackgroundFill(Color.RED, null, null)));
Scene scene = new Scene(root, dimension, dimension);
return scene.snapshot(new WritableImage(dimension, dimension));
}
}
结果:
如您所见,舞台图标不是红色方块。 为什么?从文件加载始终有效,使用AWT生成图像也是有效的。
解决方法:
BufferedImage bimg = new BufferedImage(dimension, dimension, BufferedImage.TYPE_INT_ARGB);
SwingFXUtils.fromFXImage(scene.snapshot(new WritableImage(dimension, dimension)), bimg);
SwingFXUtils.toFXImage(bimg, new WritableImage(dimension, dimension));