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

@Override
public void mouseWheelMoved(MouseWheelEvent e) {
	int eventModifiers = e.getModifiers();
	boolean controlKeyDown = (eventModifiers & DockingUtils.CONTROL_KEY_MODIFIER_MASK) != 0;
	if (!controlKeyDown) {
		return;
	}

	int wheelRotation = -e.getWheelRotation();
	int offset = wheelRotation * 10;

	Point newPoint = new Point(0, offset);

	if (e.isAltDown()) {
		// control-alt is a horizontal pan
		newPoint.setLocation(offset, 0);
	}

	VisualGraphViewUpdater<V, E> updater = getViewUpdater(e);
	updater.moveViewerLocationWithoutAnimation(newPoint);
}
 

HorizontalScroller(JComponent view) {
    super(view, VERTICAL_SCROLLBAR_NEVER, HORIZONTAL_SCROLLBAR_AS_NEEDED);

    setBorder(BorderFactory.createEmptyBorder());
    setViewportBorder(BorderFactory.createEmptyBorder());

    getViewport().setOpaque(false);
    setOpaque(false);
    
    super.addMouseWheelListener(new MouseWheelListener() {
        @Override
        public void mouseWheelMoved(MouseWheelEvent e) {
            if (e.getModifiers() == MouseWheelEvent.SHIFT_MASK) {
                scroll(getHorizontalScrollBar(), e);
            } else {
                getParent().dispatchEvent(e);
            }
        }
        
    });
}
 

@Override
public void mouseWheelMoved(final MouseWheelEvent mwe) {
	final int modifiers = mwe.getModifiers();
	if (0 == ( (MouseWheelEvent.SHIFT_MASK | MouseWheelEvent.ALT_MASK) ^ modifiers)) {
		final Object source = mwe.getSource();
		if (! (source instanceof DisplayCanvas)) return;
		final DisplayCanvas dc = (DisplayCanvas)source;
		final Layer la = dc.getDisplay().getLayer();
		final int rotation = mwe.getWheelRotation();
		final float magnification = (float)dc.getMagnification();
		final Rectangle srcRect = dc.getSrcRect();
		final float x = ((mwe.getX() / magnification) + srcRect.x);
		final float y = ((mwe.getY() / magnification) + srcRect.y);

		final float inc = (rotation > 0 ? 1 : -1) * (1/magnification);
		if (null != adjustNodeRadius(inc, x, y, la, dc)) {
			Display.repaint(this);
			mwe.consume();
			return;
		}
	}
	super.mouseWheelMoved(mwe);
}
 

@Override
public void mouseWheelMoved(final MouseWheelEvent mwe) {
	final int modifiers = mwe.getModifiers();
	if (0 == (MouseWheelEvent.SHIFT_MASK ^ modifiers)) {
		final Object source = mwe.getSource();
		if (! (source instanceof DisplayCanvas)) return;
		final DisplayCanvas dc = (DisplayCanvas)source;
		final Layer la = dc.getDisplay().getLayer();
		final int rotation = mwe.getWheelRotation();
		final double magnification = dc.getMagnification();
		final Rectangle srcRect = dc.getSrcRect();
		final float x = (float)((mwe.getX() / magnification) + srcRect.x);
		final float y = (float)((mwe.getY() / magnification) + srcRect.y);

		adjustEdgeConfidence(rotation > 0 ? 1 : -1, x, y, la, dc);
		Display.repaint(this);
		mwe.consume();
	}
}
 

private MouseWheelEvent translateEvent(MouseWheelEvent e)
{
	Dimension stretchedDimensions = client.getStretchedDimensions();
	Dimension realDimensions = client.getRealDimensions();

	int newX = (int) (e.getX() / (stretchedDimensions.width / realDimensions.getWidth()));
	int newY = (int) (e.getY() / (stretchedDimensions.height / realDimensions.getHeight()));

	return new MouseWheelEvent((Component) e.getSource(), e.getID(), e.getWhen(), e.getModifiers(), newX, newY,
		e.getClickCount(), e.isPopupTrigger(), e.getScrollType(), e.getScrollAmount(), e.getWheelRotation());
}
 

private boolean isScrollModifiers(MouseWheelEvent e) {
	GraphViewer<V, E> viewer = getGraphViewer(e);
	VisualGraphOptions options = viewer.getOptions();
	boolean scrollWheelPans = options.getScrollWheelPans();
	int scrollWheelModifierToggle = DockingUtils.CONTROL_KEY_MODIFIER_MASK;
	int eventModifiers = e.getModifiers();
	if (scrollWheelPans) {
		// scrolling will pan if *not* modified (modified in this case means to zoom)
		return !((scrollWheelModifierToggle & eventModifiers) == scrollWheelModifierToggle);
	}

	// scrolling *will* pan only when modified (unmodified in this case means to zoom)
	return ((scrollWheelModifierToggle & eventModifiers) == scrollWheelModifierToggle);
}
 

public PrintPreviewComponent(RamusPrintable printable, int columnCount,
                             GUIFramework framework) {
    this.printable = printable;
    this.columnCount = columnCount;
    this.framework = framework;
    MouseWheelListener l = new MouseWheelListener() {

        @Override
        public void mouseWheelMoved(MouseWheelEvent e) {
            if (e.getScrollType() == MouseWheelEvent.WHEEL_UNIT_SCROLL) {
                if (e.getModifiers() == KeyEvent.CTRL_MASK) {
                    double r = e.getWheelRotation();
                    double zoom = getZoom() - 0.2 * r;
                    setCurrentZoom(zoom);
                } else {
                    Rectangle rect = getVisibleRect();
                    scrollRectToVisible(new Rectangle(rect.x, rect.y
                            + e.getWheelRotation() * 150, rect.width,
                            rect.height));
                }
            }
        }
    };
    this.addMouseWheelListener(l);
    layout = Options.getInteger("PREVIW_LAYOUT", PREV_LAYOUT_GRID);
    SwingUtilities.invokeLater(new Runnable() {

        @Override
        public void run() {
            setCurrentZoom(Options.getDouble("PREV_ZOOM", 1d));
        }
    });
    setCurrentZoom(Options.getDouble("PREV_ZOOM", 1d));
}
 

private MouseWheelEvent translateEvent(MouseWheelEvent e)
{
	Dimension stretchedDimensions = client.getStretchedDimensions();
	Dimension realDimensions = client.getRealDimensions();

	int newX = (int) (e.getX() / (stretchedDimensions.width / realDimensions.getWidth()));
	int newY = (int) (e.getY() / (stretchedDimensions.height / realDimensions.getHeight()));

	return new MouseWheelEvent((Component) e.getSource(), e.getID(), e.getWhen(), e.getModifiers(), newX, newY,
			e.getClickCount(), e.isPopupTrigger(), e.getScrollType(), e.getScrollAmount(), e.getWheelRotation());
}
 

@Override
protected void processMouseWheelEvent(MouseWheelEvent e) {
    MouseWheelEvent ee = new MouseWheelEvent(
            (Component) e.getSource(), e.getID(), e.getWhen(),
            e.getModifiers(), e.getX(), e.getY(), e.getXOnScreen(),
            e.getYOnScreen(), e.getClickCount(),
            e.isPopupTrigger(), e.getScrollType(), e.getScrollAmount(),
            e.getWheelRotation(), e.getPreciseWheelRotation());
    super.processMouseWheelEvent(ee);
}
 

private MouseWheelEvent cloneEvent(MouseWheelEvent e) {
	return new MouseWheelEvent(getParentScrollPane(), e.getID(), e.getWhen(), e.getModifiers(), 1, 1,
			e.getClickCount(), false, e.getScrollType(), e.getScrollAmount(), e.getWheelRotation());
}
 

private MouseWheelEvent cloneEvent(MouseWheelEvent e) {
	return new MouseWheelEvent(getParentScrollPane(), e.getID(), e
			.getWhen(), e.getModifiers(), 1, 1, e
			.getClickCount(), false, e.getScrollType(), e
			.getScrollAmount(), e.getWheelRotation());
}
 

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());
}
 

/**
 * Indicates whether the specified event is not consumed and does not have unexpected modifiers.
 *
 * @param event a mouse wheel event to check for validity
 * @return {@code true} if the specified event is valid, {@code false} otherwise
 */
public static boolean isScrollEvent(@Nonnull MouseWheelEvent event) {
  if (event.isConsumed()) return false; // event should not be consumed already
  if (event.getWheelRotation() == 0) return false; // any rotation expected (forward or backward)
  return 0 == (SCROLL_MODIFIERS & event.getModifiers());
}