节点的 JavaFX 快照

Question

我不知道如何制作节点组的快照。也就是说，我想制作一个覆盖有数字的 PNG 图标图像(例如未读消息)。

我的代码:

int totalNumberOfUnreadMessages = 1;

ImageView applicationIconImageView = new ImageView(getApplication().getStage().getIcons().get(1));

Text text = new Text();            
            text.setX(10);
            text.setY(10);
            text.setFill(Color.RED);
            text.setText(Integer.toString(totalNumberOfUnreadMessages));
            text.setFont(Font.font(null, FontWeight.BOLD, 10));            

            Group group = new Group();
            group.getChildren().addAll(applicationIconImageView, text);            

            MainFrameWindow.runOnUIThread(() -> {
                getApplication().getStage().getIcons().clear();
                WritableImage applicationIconWritableImage = group.snapshot(new SnapshotParameters(), null);                
                getApplication().getStage().getIcons().add(0, applicationIconWritableImage);
            }, false);

非常感谢任何帮助。提前谢谢大家。

Answer 1

BufferedImage bufferedImage = new BufferedImage(dimension, dimension, BufferedImage.TYPE_INT_ARGB);
SwingFXUtils.fromFXImage(scene.snapshot(new WritableImage(dimension, dimension)), bufferedImage);
SwingFXUtils.toFXImage(bufferedImage, new WritableImage(dimension, dimension));