Examples with ZoomEvent javafx.scene.input.ZoomEvent used on opensource projects

Example 1 with ZoomEvent

use of javafx.scene.input.ZoomEvent in project NMEAParser by tvesalainen.

the class ZoomEmulator method handle.

@Override
public void handle(MouseEvent me) {
    node = (Node) me.getTarget();
    double sx = me.getScreenX();
    double sy = me.getScreenY();
    Point2D local = node.screenToLocal(sx, sy);
    if (local == null) {
        initialHypot = hypot = 0;
        zoomFactor = 1;
        totalZoomFactor = 1;
        return;
    }
    Bounds bounds = node.getBoundsInLocal();
    double cx = local.getX() - bounds.getWidth() / 2;
    double cy = local.getY() - bounds.getHeight() / 2;
    EventType<? extends MouseEvent> eventType = me.getEventType();
    if (eventType == MOUSE_PRESSED) {
        initialHypot = hypot = Math.hypot(cy, cx);
        zoomFactor = 1;
        totalZoomFactor = 1;
        ZoomEvent ze = createZoomEvent(me, ZOOM_STARTED);
        Event.fireEvent(node, ze);
    } else {
        double dHypot = Math.hypot(cy, cx);
        ;
        zoomFactor = dHypot / hypot;
        totalZoomFactor = dHypot / initialHypot;
        hypot = dHypot;
        if (eventType == MOUSE_DRAGGED) {
            ZoomEvent ze = createZoomEvent(me, ZOOM);
            Event.fireEvent(node, ze);
        } else {
            ZoomEvent ze = createZoomEvent(me, ZOOM_FINISHED);
            Event.fireEvent(node, ze);
        }
    }
}