Example usage for javafx.scene.chart XYChart localToScene

Introduction

In this page you can find the example usage for javafx.scene.chart XYChart localToScene.

Prototype

public Point2D localToScene(double localX, double localY) 

Source Link

Document

Transforms a point from the local coordinate space of this Node into the coordinate space of its scene.

Usage

From source file:Main.java

public static void addMarker(final XYChart<?, ?> chart, final StackPane chartWrap) {
    final Line valueMarker = new Line();
    final Node chartArea = chart.lookup(".chart-plot-background");

    chartArea.setOnMouseMoved(new EventHandler<MouseEvent>() {
        @Override//from w  w  w  .j  a  v a 2  s  .  com
        public void handle(MouseEvent event) {
            Point2D scenePoint = chart.localToScene(event.getSceneX(), event.getSceneY());
            Point2D position = chartWrap.sceneToLocal(scenePoint.getX(), scenePoint.getY());

            Bounds chartAreaBounds = chartArea.localToScene(chartArea.getBoundsInLocal());
            valueMarker.setStartY(0);
            valueMarker.setEndY(chartWrap.sceneToLocal(chartAreaBounds).getMaxY()
                    - chartWrap.sceneToLocal(chartAreaBounds).getMinY());

            valueMarker.setStartX(0);
            valueMarker.setEndX(0);
            valueMarker.setTranslateX(position.getX() - chartWrap.getWidth() / 2);

            double ydelta = chartArea.localToScene(0, 0).getY() - chartWrap.localToScene(0, 0).getY();
            valueMarker.setTranslateY(-ydelta * 2);
        }
    });

    chartWrap.getChildren().add(valueMarker);
}

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