BufferedImage 到 JavaFX 图像
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BufferedImage to JavaFX image
提问by Nanor
I have an image I screenshot from the primary monitor and I want to add it to a Java FX ImageViewas so:
我有一张从主监视器截取的图像，我想将其添加到 Java FX 中，ImageView如下所示：
@FXML
protected ImageView screenshot() throws AWTException, IOException {
Rectangle screenRect = new Rectangle(Toolkit.getDefaultToolkit().getScreenSize());
BufferedImage capture = new Robot().createScreenCapture(screenRect);
ImageView imageView = new ImageView();
Image image = capture; //Error
imageView.setImage(image);
return imageView;
}
I'm trying to set the BufferedImage captureto javafx.scene.image.Image imagebut the types are incompatible nor am I able to cast it. How can I rectify this?
我正在尝试将 设置为BufferedImage capture，javafx.scene.image.Image image但类型不兼容，我也无法投射它。我该如何纠正？
采纳答案by Reimeus
You can use
您可以使用
Image image = SwingFXUtils.toFXImage(capture, null);
回答by Dan
normally the best choice is Image image = SwingFXUtils.toFXImage(capture, null);in java9 or bigger.... but in matter of performance in javafx, also in devices with low performance, you can use this technique that will do the magic, tested in java8
通常最好的选择是Image image = SwingFXUtils.toFXImage(capture, null);在 java9 或更大......但在 javafx 的性能问题上，也在性能低的设备中，你可以使用这种技术来实现魔法，在 java8 中测试
private static Image convertToFxImage(BufferedImage image) {
WritableImage wr = null;
if (image != null) {
wr = new WritableImage(image.getWidth(), image.getHeight());
PixelWriter pw = wr.getPixelWriter();
for (int x = 0; x < image.getWidth(); x++) {
for (int y = 0; y < image.getHeight(); y++) {
pw.setArgb(x, y, image.getRGB(x, y));
}
}
}
return new ImageView(wr).getImage();
}
