How to draw a continuous line with mouse on JavaFX canvas?

Question

The code below results in a JavaFX Canvas that can be drawn on with the mouse pointer but skips some points, i.e., leaves gaps if one tries to draw a continuous line. The ga

Answer 1

Sorry about previous message, should have asked a question in a new thread, right?

Here's a solution that works better, not creating the strange lines like in the scribbletest above.

canvas.addEventHandler(MouseEvent.MOUSE_PRESSED, 
        new EventHandler<MouseEvent>(){
    @Override
    public void handle(MouseEvent event) {
        graphicsContext.beginPath();
        graphicsContext.moveTo(event.getX(), event.getY());
        graphicsContext.stroke();

    }
});

canvas.addEventHandler(MouseEvent.MOUSE_DRAGGED, 
        new EventHandler<MouseEvent>(){
    @Override
    public void handle(MouseEvent event) {
        graphicsContext.lineTo(event.getX(), event.getY());
        graphicsContext.stroke();
        graphicsContext.closePath();
        graphicsContext.beginPath();
        graphicsContext.moveTo(event.getX(), event.getY());
    }
});

canvas.addEventHandler(MouseEvent.MOUSE_RELEASED, 
        new EventHandler<MouseEvent>(){
    @Override
    public void handle(MouseEvent event) {
        graphicsContext.lineTo(event.getX(), event.getY());
        graphicsContext.stroke();
        graphicsContext.closePath();
    }
});

Answer 2

This code from here.

import javafx.application.Application;
import javafx.event.EventHandler;
import javafx.scene.Scene;
import javafx.scene.canvas.Canvas;
import javafx.scene.canvas.GraphicsContext;
import javafx.scene.input.MouseEvent;
import javafx.scene.layout.StackPane;
import javafx.scene.paint.Color;
import javafx.stage.Stage;

/**
 * @web http://java-buddy.blogspot.com/
 */
public class JavaFX_DrawOnCanvas extends Application {

    @Override
    public void start(Stage primaryStage) {

        Canvas canvas = new Canvas(400, 400);
        final GraphicsContext graphicsContext = canvas.getGraphicsContext2D();
        initDraw(graphicsContext);

        canvas.addEventHandler(MouseEvent.MOUSE_PRESSED, 
                new EventHandler<MouseEvent>(){

            @Override
            public void handle(MouseEvent event) {
                graphicsContext.beginPath();
                graphicsContext.moveTo(event.getX(), event.getY());
                graphicsContext.stroke();
            }
        });

        canvas.addEventHandler(MouseEvent.MOUSE_DRAGGED, 
                new EventHandler<MouseEvent>(){

            @Override
            public void handle(MouseEvent event) {
                graphicsContext.lineTo(event.getX(), event.getY());
                graphicsContext.stroke();
            }
        });

        canvas.addEventHandler(MouseEvent.MOUSE_RELEASED, 
                new EventHandler<MouseEvent>(){

            @Override
            public void handle(MouseEvent event) {

            }
        });

        StackPane root = new StackPane();
        root.getChildren().add(canvas);
        Scene scene = new Scene(root, 400, 400);
        primaryStage.setTitle("java-buddy.blogspot.com");
        primaryStage.setScene(scene);
        primaryStage.show();
    }

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

    private void initDraw(GraphicsContext gc){
        double canvasWidth = gc.getCanvas().getWidth();
        double canvasHeight = gc.getCanvas().getHeight();

        gc.setFill(Color.LIGHTGRAY);
        gc.setStroke(Color.BLACK);
        gc.setLineWidth(5);

        gc.fill();
        gc.strokeRect(
                0,              //x of the upper left corner
                0,              //y of the upper left corner
                canvasWidth,    //width of the rectangle
                canvasHeight);  //height of the rectangle

        gc.setFill(Color.RED);
        gc.setStroke(Color.BLUE);
        gc.setLineWidth(1);

    }

}