Java Code Examples for java.awt.event.MouseWheelEvent#getComponent()

@Override
public void mouseWheelMoved(MouseWheelEvent e) {
  if (gestureHandlers == null || gestureHandlers.isEmpty() || !listensFor(Event.MOUSE_WHEEL))
    return;

  if (e.getComponent() instanceof ChartPanel) {
    ChartPanel chartPanel = (ChartPanel) e.getComponent();
    ChartEntity entity = findChartEntity(chartPanel, e);
    ChartGesture.Entity gestureEntity = ChartGesture.getGestureEntity(entity);
    GestureButton button = GestureButton.getButton(e.getButton());

    // handle event
    handleEvent(new ChartGestureEvent(chartPanel, e, entity,
        new ChartGesture(gestureEntity, Event.MOUSE_WHEEL, button)));
  }
}
 

@Override
public void mouseWheelMoved(MouseWheelEvent e) {
  if (gestureHandlers == null || gestureHandlers.isEmpty() || !listensFor(Event.MOUSE_WHEEL))
    return;

  if (e.getComponent() instanceof ChartPanel) {
    ChartPanel chartPanel = (ChartPanel) e.getComponent();
    ChartEntity entity = findChartEntity(chartPanel, e);
    ChartGesture.Entity gestureEntity = ChartGesture.getGestureEntity(entity);
    Button button = Button.getButton(e.getButton());

    // handle event
    handleEvent(new ChartGestureEvent(chartPanel, e, entity,
        new ChartGesture(gestureEntity, Event.MOUSE_WHEEL, button)));
  }
}
 

@Override
public void mouseWheelMoved(MouseWheelEvent e) {
  if (gestureHandlers == null || gestureHandlers.isEmpty() || !listensFor(Event.MOUSE_WHEEL))
    return;

  if (e.getComponent() instanceof ChartPanel) {
    ChartPanel chartPanel = (ChartPanel) e.getComponent();
    ChartEntity entity = findChartEntity(chartPanel, e);
    ChartGesture.Entity gestureEntity = ChartGesture.getGestureEntity(entity);
    Button button = Button.getButton(e.getButton());

    // handle event
    handleEvent(new ChartGestureEvent(chartPanel, e, entity,
        new ChartGesture(gestureEntity, Event.MOUSE_WHEEL, button)));
  }
}
 

@Override public void mouseWheelMoved(MouseWheelEvent e) {
  int dir = e.getWheelRotation();
  int z = zoomRange.getValue();
  zoomRange.setValue(z + EXTENT * (dir > 0 ? -1 : 1));
  if (z == zoomRange.getValue()) {
    return;
  }
  Component c = e.getComponent();
  Rectangle r = c.getBounds();
  Point2D p = new Point2D.Double(r.getCenterX(), r.getCenterY());
  Point2D p1 = transformPoint(p);
  double scale = dir > 0 ? 1 / ZOOM_MULTIPLICATION_FACTOR : ZOOM_MULTIPLICATION_FACTOR;
  coordAndZoomTransform.scale(scale, scale);
  Point2D p2 = transformPoint(p);
  coordAndZoomTransform.translate(p2.getX() - p1.getX(), p2.getY() - p1.getY());
  c.repaint();
}
 

@Override public void mouseWheelMoved(MouseWheelEvent e) {
  double dir = e.getPreciseWheelRotation();
  int z = zoomRange.getValue();
  zoomRange.setValue(z + EXTENT * (dir > 0 ? -1 : 1));
  if (z != zoomRange.getValue()) {
    Component c = e.getComponent();
    Container p = SwingUtilities.getAncestorOfClass(JViewport.class, c);
    if (p instanceof JViewport) {
      JViewport vport = (JViewport) p;
      Rectangle ovr = vport.getViewRect();
      double s = dir > 0 ? 1d / ZOOM_MULTIPLICATION_FACTOR : ZOOM_MULTIPLICATION_FACTOR;
      zoomTransform.scale(s, s);
      // double s = 1d + zoomRange.getValue() * .1;
      // zoomTransform.setToScale(s, s);
      Rectangle nvr = AffineTransform.getScaleInstance(s, s).createTransformedShape(ovr).getBounds();
      Point vp = nvr.getLocation();
      vp.translate((nvr.width - ovr.width) / 2, (nvr.height - ovr.height) / 2);
      vport.setViewPosition(vp);
      c.revalidate();
      c.repaint();
    }
  }
}
 

@Override protected void processMouseWheelEvent(MouseWheelEvent e, JLayer<? extends JScrollPane> l) {
  Component c = e.getComponent();
  int dir = e.getWheelRotation();
  JScrollPane main = l.getView();
  if (c instanceof JScrollPane && !c.equals(main)) {
    JScrollPane child = (JScrollPane) c;
    BoundedRangeModel m = child.getVerticalScrollBar().getModel();
    int extent = m.getExtent();
    int minimum = m.getMinimum();
    int maximum = m.getMaximum();
    int value = m.getValue();
    boolean b1 = dir > 0 && value + extent >= maximum;
    boolean b2 = dir < 0 && value <= minimum;
    if (b1 || b2) {
      main.dispatchEvent(SwingUtilities.convertMouseEvent(c, e, main));
    }
  }
}
 

/**
 * Re-dispatches the event to the first component in the hierarchy that has a {@link MouseWheelListener}
 * registered.
 */
@Override
protected void processMouseWheelEvent(final MouseWheelEvent event,
                                      final JXLayer<? extends V> jxlayer) {
    /*
     * Only process an event if it is not already consumed. This may be the
     * case if this LayerUI is contained in a wrapped hierarchy.
     */
    if (!event.isConsumed()) {
        /*
         * Since we will create a new event, the argument event must be
         * consumed.
         */
        event.consume();
        /*
         * Find a target up in the hierarchy that has
         * MouseWheelEventListeners registered.
         */
        Component target = event.getComponent();
        Component newTarget = findWheelListenerComponent(target);
        if (newTarget == null) {
            newTarget = jxlayer.getParent();
        }
        /*
         * Convert the location relative to the new target
         */
        Point point = SwingUtilities.convertPoint(event.getComponent(),
                                                  event.getPoint(), newTarget);
        /*
         * Create a new event and dispatch it.
         */
        newTarget.dispatchEvent(createMouseWheelEvent(event, point,
                                                      newTarget));
    }
}
 

/**
 * mouseWheelMoved is similar to mouseWheelMoved from WheelZoomControl,
 * except the zoom direction is changed. Here we use 1 - 0.1f * e.getWheelRotation()
 * while mouseWheelMoved from WheelZoomControl uses 1 + 0.1f * e.getWheelRotation()
 */
@Override
public void mouseWheelMoved(MouseWheelEvent e) {
	Display display = (Display) e.getComponent();
	m_point.x = display.getWidth() / 2;
	m_point.y = display.getHeight() / 2;
	zoom(display, m_point, 1 - 0.1f * e.getWheelRotation(), false);
}
 

private MouseWheelEvent createScrollAmountEvent(MouseWheelEvent e) {
	//  Reset the scroll amount
	return new MouseWheelEvent(e.getComponent(), e.getID(), e.getWhen(), e.getModifiers(),
			e.getX(), e.getY(), e.getXOnScreen(), e.getYOnScreen(),
			e.getClickCount(), e.isPopupTrigger(), e.getScrollType(), scrollAmount, e.getWheelRotation());
}
 

@Override public void mouseWheelMoved(MouseWheelEvent e) {
  JSlider s = (JSlider) e.getComponent();
  s.setValue(s.getValue() - e.getWheelRotation());
}