javafx 2.1 how to save an Image after modification using ColorAdjust - image

Question

I just make a class that let me modify an image like saturation brightness, contrast and hue using ColorAjust Class.
But i dont know how to save that image after making those modifications.
Here is the code:
final Stage imageProcessStage = new Stage();
imageProcessStage.initModality(Modality.APPLICATION_MODAL);
imageImageProcess = new Image(ImagePathImageProcess);
imageViewImageProcess = ImageViewBuilder.create().image(imageImageProcess).build();
ColorAdjust colorAdjust = ColorAdjustBuilder.create().build();
imageViewImageProcess.setEffect(colorAdjust);
//
Label saturationLabel = LabelBuilder.create().text("Saturation").build();
GridPane.setConstraints(saturationLabel, 0, 0);
Slider saturationSlider = SliderBuilder.create().value(50).build();
colorAdjust.saturationProperty().bind(saturationSlider.valueProperty().divide(50).subtract(1));
GridPane.setConstraints(saturationSlider, 1, 0);
GridPane.setHgrow(saturationSlider, Priority.ALWAYS);
Label saturationValueLabel = LabelBuilder.create().minWidth(75).maxWidth(75).build();
saturationValueLabel.textProperty().bind(colorAdjust.saturationProperty().multiply(100).asString("%.2f%%"));
GridPane.setConstraints(saturationValueLabel, 2, 0);
//
Label hueLabel = LabelBuilder.create().text("Hue").build();
GridPane.setConstraints(hueLabel, 0, 1);
Slider hueSlider = SliderBuilder.create().value(50).build();
colorAdjust.hueProperty().bind(hueSlider.valueProperty().divide(50).subtract(1));
GridPane.setConstraints(hueSlider, 1, 1);
GridPane.setHgrow(hueSlider, Priority.ALWAYS);
Label hueValueLabel = LabelBuilder.create().minWidth(75).maxWidth(75).build();
hueValueLabel.textProperty().bind(colorAdjust.hueProperty().multiply(100).asString("%.2f%%"));
GridPane.setConstraints(hueValueLabel, 2, 1);
//
Label brightnessLabel = LabelBuilder.create().text("Brightness").build();
GridPane.setConstraints(brightnessLabel, 0, 2);
Slider brightnessSlider = SliderBuilder.create().value(50).build();
colorAdjust.brightnessProperty().bind(brightnessSlider.valueProperty().divide(50).subtract(1));
GridPane.setConstraints(brightnessSlider, 1, 2);
GridPane.setHgrow(brightnessSlider, Priority.ALWAYS);
Label brightnessValueLabel = LabelBuilder.create().minWidth(75).maxWidth(75).build();
brightnessValueLabel.textProperty().bind(colorAdjust.brightnessProperty().multiply(100).asString("%.2f%%"));
GridPane.setConstraints(brightnessValueLabel, 2, 2);
//
Label contrastLabel = LabelBuilder.create().text("Contrast").build();
GridPane.setConstraints(contrastLabel, 0, 3);
Slider contrastSlider = SliderBuilder.create().value(50).build();
colorAdjust.contrastProperty().bind(contrastSlider.valueProperty().divide(50).subtract(1));
GridPane.setConstraints(contrastSlider, 1, 3);
GridPane.setHgrow(contrastSlider, Priority.ALWAYS);
Label contrastValueLabel = LabelBuilder.create().minWidth(75).maxWidth(75).build();
contrastValueLabel.textProperty().bind(colorAdjust.contrastProperty().multiply(100).asString("%.2f%%"));
GridPane.setConstraints(contrastValueLabel, 2, 3);
//Validate Button
Button btnValider = new Button("Valider");
btnValider.setOnAction(new EventHandler<ActionEvent>() {
public void handle(ActionEvent event) {
// SAVE IMAGE HERE
}
});

Answer 1

Upgrade to JavaFX 2.2 and use the following code in your button event handler.
ImageIO.write(
SwingFXUtils.fromFXImage(
imageViewImageProcess.snapshot(null, null), null
),
"png",
new File("valider.png")
);
Note that the 2.2 is currently in developer preview rather than a GA product, so you may encounter some issues and bugs until the new 2.2 methods have been thoroughly QAed.
Here is a complete, executable example: https://gist.github.com/2870355

Answer 2

A general purpose and simpler version of the code:
private void saveImage(
Image i,
String extension,
String pathname)
throws IOException {
ImageIO.write(
SwingFXUtils.fromFXImage(
image,
null),
extension,
new File(
pathname));
}