/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */

package scrollpanetransform_11253;

import javafx.application.Application;
import javafx.beans.InvalidationListener;
import javafx.beans.Observable;
import javafx.beans.value.ChangeListener;
import javafx.beans.value.ObservableValue;
import javafx.geometry.Orientation;
import javafx.scene.Group;
import javafx.scene.Scene;
import javafx.scene.control.ScrollPane;
import javafx.scene.control.Slider;
import javafx.scene.image.Image;
import javafx.scene.image.ImageView;
import javafx.scene.paint.Color;
import javafx.stage.Stage;
import javafx.scene.transform.Scale;



/**
 * @author mickf
 */
public class Main extends Application {

    private static final String URL_PREFIX = "file:src/scrollpanetransform_11253/";

    public static Image createImage(String filename, float width, float height) {
        return new Image(URL_PREFIX + filename, width, height, true, true, false);
    }

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        launch(Main.class, args);
    }

    final ScrollPane sView1 = new ScrollPane();
    final Slider scaleSlider = new Slider(0.0, 2.0, 1.0);
    final Scale scaleTransform = new Scale();
    private Group scaledGroup;
    private Group containerGroup;

    private final InvalidationListener containerGroupListener = new InvalidationListener() {
        @Override public void invalidated(Observable valueModel) {
            sView1.setVmax(containerGroup.prefWidth(-1));
            sView1.setHmax(containerGroup.prefHeight(-1));
        }
    };


    @Override public void start(Stage stage) {
        Image image1 = createImage("duke.jpg", 200f, 200f);
        ImageView imageView1 = new ImageView();
        imageView1.setImage(image1);

        stage.setTitle("ScrollPane Transform");
        stage.setWidth(320);
        stage.setHeight(400);
        Scene scene = new Scene(new Group());
        scene.setFill(Color.CHOCOLATE);

        Group root = (Group)scene.getRoot();

        scaleSlider.setOrientation(Orientation.HORIZONTAL);
        scaleSlider.setLayoutX(50);
        scaleSlider.setLayoutY(280);
        scaleSlider.setValue(1.0);
        scaleSlider.setMajorTickUnit(0.25);
        scaleSlider.setMinorTickCount(5);
        scaleSlider.setShowTickLabels(true);
        scaleSlider.setShowTickMarks(true);
        ChangeListener scaleListener = new ChangeListener() {
          public void changed(ObservableValue ov, Object old_val, Object new_val) {
               scaleTransform.setX(scaleSlider.getValue());
               scaleTransform.setY(scaleSlider.getValue());
          }
        };
        scaleSlider.valueProperty().addListener(scaleListener);
        root.getChildren().add(scaleSlider);


        scaleTransform.setX(scaleSlider.getValue());
        scaleTransform.setY(scaleSlider.getValue());

        scaledGroup = new Group();
        scaledGroup.getChildren().clear();
        scaledGroup.getChildren().addAll(imageView1);
        scaledGroup.getTransforms().addAll(scaleTransform);

        containerGroup  = new Group();
        containerGroup.getChildren().addAll(scaledGroup);

        containerGroup.layoutBoundsProperty().addListener(containerGroupListener);

        sView1.setPrefSize(120, 120);
        sView1.setContent(containerGroup);
        sView1.setPannable(true);
        sView1.setLayoutX(10);
        sView1.setLayoutY(5);

        root.getChildren().add(sView1);

        stage.setScene(scene);
        stage.setVisible(true);
    }
}