Created
February 4, 2016 08:10
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| import javafx.animation.AnimationTimer; | |
| import javafx.application.Application; | |
| import javafx.geometry.Insets; | |
| import javafx.scene.canvas.Canvas; | |
| import javafx.scene.canvas.GraphicsContext; | |
| import javafx.scene.paint.Color; | |
| import javafx.stage.Stage; | |
| import javafx.scene.layout.StackPane; | |
| import javafx.scene.Scene; | |
| /** | |
| * User: hansolo | |
| * Date: 04.02.16 | |
| * Time: 09:02 | |
| */ | |
| public class BlinkTest extends Application { | |
| private Canvas canvas; | |
| private GraphicsContext ctx; | |
| private boolean toggle; | |
| private long lastTimerCall; | |
| private AnimationTimer timer; | |
| @Override public void init() { | |
| canvas = new Canvas(200, 200); | |
| ctx = canvas.getGraphicsContext2D(); | |
| toggle = true; | |
| lastTimerCall = System.nanoTime(); | |
| timer = new AnimationTimer() { | |
| @Override public void handle(long now) { | |
| if (now > lastTimerCall + 500_000_000l) { | |
| blink(toggle); | |
| toggle = !toggle; | |
| lastTimerCall = now; | |
| } | |
| } | |
| }; | |
| } | |
| @Override public void start(Stage stage) { | |
| StackPane pane = new StackPane(canvas); | |
| pane.setPadding(new Insets(10)); | |
| Scene scene = new Scene(pane); | |
| stage.setScene(scene); | |
| stage.show(); | |
| timer.start(); | |
| } | |
| private void blink(boolean on) { | |
| if (on) { | |
| ctx.setStroke(Color.RED); | |
| ctx.strokeLine(50, 100, 150, 100); | |
| } else { | |
| ctx.clearRect(49, 99, 151, 101); | |
| } | |
| } | |
| @Override public void stop() { | |
| System.exit(0); | |
| } | |
| public static void main(String[] args) { | |
| launch(args); | |
| } | |
| } |
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