package jfxfeatures.graphics.image.loading.async;

import java.io.File;
import java.net.MalformedURLException;

import javafx.application.Application;
import javafx.beans.value.ChangeListener;
import javafx.beans.value.ObservableValue;
import javafx.scene.Scene;
import javafx.scene.image.Image;
import javafx.scene.image.ImageView;
import javafx.scene.layout.StackPane;
import javafx.scene.paint.Color;
import javafx.stage.Stage;

public class AsyncImageDemo extends Application {
	
	@Override
	public void start(Stage stage) {
		String imgURL = null;
		try {
			final String remoteURL = "http://www.spacetelescope.org/static/archives/posters/large/earth02.jpg";
			final String localURL = new File("data/earth02.jpg").toURI().toURL().toExternalForm();
			final String localFile = "/earth02.jpg";
			
			//===========================
			// Select local or remote image source.
			imgURL = remoteURL;
			//===========================
		} catch (MalformedURLException e1) {
			e1.printStackTrace();
		}

		StackPane root = new StackPane();
		Scene scene = new Scene(root, 800, 800);
		scene.setFill(Color.BLACK);
		
		ImageView iv = new ImageView();
		iv.setPreserveRatio(true);
		iv.fitHeightProperty().bind(root.heightProperty());
		iv.fitWidthProperty().bind(root.widthProperty());
		root.getChildren().add(iv);

		stage.setTitle(getClass().getSimpleName());
		stage.setScene(scene);
		stage.show();

		if (imgURL != null) {
			Image image = new Image(imgURL, true);
			image.progressProperty().addListener(new ChangeListener<Number>() {
				@Override
				public void changed(ObservableValue<? extends Number> observable, Number oldValue, Number newValue) {
					System.out.println("Progress: " + Math.rint(newValue.doubleValue() * 100) + "%");
				}
			});
			iv.setImage(image);
		}
	}

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