Demo.java

/*
 * Copyright (c) 2013 by Gerrit Grunwald
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package eu.hansolo.enzo.ledbargraph;

import eu.hansolo.enzo.led.Led;
import javafx.animation.AnimationTimer;
import javafx.application.Application;
import javafx.collections.ObservableList;
import javafx.geometry.Orientation;
import javafx.scene.Node;
import javafx.scene.Parent;
import javafx.scene.Scene;
import javafx.scene.layout.StackPane;
import javafx.scene.paint.Color;
import javafx.stage.Stage;

import java.util.Random;


/**
 * Created by
 * User: hansolo
 * Date: 19.11.12
 * Time: 04:02
 */
public class Demo extends Application {
    private static int noOfNodes  = 0;
    private static final Random RND = new Random();
    private LedBargraph         control;
    private long                lastTimerCall;
    private AnimationTimer      timer;

    @Override public void init() {
        control = LedBargraphBuilder.create()
                                    .ledType(Led.LedType.HORIZONTAL)
                                    .orientation(Orientation.VERTICAL)
                                    .peakValueVisible(true)
                                    .ledSize(32)
                                    .build();
        lastTimerCall = System.nanoTime();
        timer = new AnimationTimer() {
            @Override public void handle(final long NOW) {
                if (NOW > lastTimerCall + 100_000_000l) {
                    control.setValue(RND.nextDouble());
                    lastTimerCall = NOW;
                }
            }
        };
    }

    @Override public void start(Stage stage) {
        StackPane pane = new StackPane();

        pane.getChildren().setAll(control);

        Scene scene = new Scene(pane, 400, 400, Color.rgb(0, 0, 0, 0.8));

        stage.setTitle("Led Bargraph demo");
        stage.setScene(scene);
        stage.show();

        timer.start();

        calcNoOfNodes(scene.getRoot());
        System.out.println(noOfNodes + " Nodes in SceneGraph");
    }

    @Override public void stop() {

    }

    public static void main(String[] args) {
        launch(args);
    }

    // ******************** Misc **********************************************
    private static void calcNoOfNodes(Node node) {
        if (node instanceof Parent) {
            if (((Parent) node).getChildrenUnmodifiable().size() != 0) {
                ObservableList<Node> tempChildren = ((Parent) node).getChildrenUnmodifiable();
                noOfNodes += tempChildren.size();
                for (Node n : tempChildren) {
                    calcNoOfNodes(n);
                    //System.out.println(n.getStyleClass().toString());
                }
            }
        }
    }
}