package bugs.writableimage;

import javafx.application.Application;
import javafx.event.EventHandler;
import javafx.scene.Scene;
import javafx.scene.image.ImageView;
import javafx.scene.image.PixelWriter;
import javafx.scene.image.WritableImage;
import javafx.scene.input.MouseEvent;
import javafx.scene.layout.StackPane;
import javafx.scene.paint.Color;
import javafx.stage.Stage;

public class UpdateError extends Application {
	
	private final static int size = 5000;
	
	private final static int w = size;
	private final static int h = size;
	
	private WritableImage wi;
	private PixelWriter pw;
		
	@Override
	public void start(Stage stage) {
		StackPane root = new StackPane();
		Scene scene = new Scene(root, 800, 800);
		
		ImageView iv = new ImageView();
		
		wi = new WritableImage(w, h);
		pw = wi.getPixelWriter();
		
		iv.setImage(wi);

		root.getChildren().add(iv);

		stage.setTitle(getClass().getSimpleName());
		stage.setScene(scene);
		stage.show();
		
    	root.setOnMouseClicked(new EventHandler<MouseEvent>() {
			@Override
			public void handle(MouseEvent e) {
				Color c = new Color(Math.random(), Math.random(), Math.random(), 1.0);
				for (int iy = 0; iy < h; ++iy) {
					for (int ix = 0; ix < w; ++ix) {
						pw.setColor(ix, iy, c);
					}					
				}
				System.out.println("New color set.");
			}    		
    	});

	}

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