Example usage for javafx.stage Stage addEventFilter

Introduction

In this page you can find the example usage for javafx.stage Stage addEventFilter.

Prototype

public final <T extends Event> void addEventFilter(final EventType<T> eventType,
        final EventHandler<? super T> eventFilter) 

Source Link

Document

Registers an event filter to this node.

Usage

From source file:fr.amap.lidar.amapvox.gui.MainFrameController.java

private void showImage(File file) {

    try {/*w  w w  . j  av a 2  s. co m*/
        ImageView iv = new ImageView(new Image(file.toURI().toURL().toString()));
        iv.setPreserveRatio(true);
        Stage stage = new Stage();

        final DoubleProperty zoomProperty = new SimpleDoubleProperty(200);

        zoomProperty.addListener(new InvalidationListener() {
            @Override
            public void invalidated(javafx.beans.Observable observable) {
                iv.setFitWidth(zoomProperty.get() * 4);
                iv.setFitHeight(zoomProperty.get() * 3);
            }
        });

        ScrollPane sp = new ScrollPane(iv);
        stage.addEventFilter(ScrollEvent.ANY, new EventHandler<ScrollEvent>() {
            @Override
            public void handle(ScrollEvent event) {
                if (event.getDeltaY() > 0) {
                    zoomProperty.set(zoomProperty.get() * 1.1);
                } else if (event.getDeltaY() < 0) {
                    zoomProperty.set(zoomProperty.get() / 1.1);
                }
            }
        });

        stage.setScene(new Scene(new Group(sp)));

        stage.sizeToScene();
        stage.show();
    } catch (IOException ex) {
        showErrorDialog(ex);
    }

}

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