Examples of java.awt.event.MouseWheelListener

java.awt.event.MouseWheelListener
The listener interface for receiving mouse wheel events on a component. (For clicks and other mouse events, use the MouseListener. For mouse movement and drags, use the MouseMotionListener.)
The class that is interested in processing a mouse wheel event implements this interface (and all the methods it contains).
The listener object created from that class is then registered with a component using the component's addMouseWheelListener method. A mouse wheel event is generated when the mouse wheel is rotated. When a mouse wheel event occurs, that object's mouseWheelMoved method is invoked.
For information on how mouse wheel events are dispatched, see the class description for {@link MouseWheelEvent}. @author Brent Christian @see MouseWheelEvent @since 1.4

      }
    });


    addComponentListener(componentListener);


    canvas.addMouseWheelListener(new MouseWheelListener() {
      @Override
      public void mouseWheelMoved(MouseWheelEvent e) {
        int rotation = e.getWheelRotation();
        listener.onZoom(rotation);
      }

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   * 
   */
  protected void installListeners()
  {
    // Installs mouse wheel listener for zooming
    MouseWheelListener wheelTracker = new MouseWheelListener()
    {
      /**
       * 
       */
      public void mouseWheelMoved(MouseWheelEvent e)

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        {
            comboBox.setRenderer ( new WebComboBoxCellRenderer () );
        }


        // Rollover scrolling listener
        mouseWheelListener = new MouseWheelListener ()
        {
            @Override
            public void mouseWheelMoved ( final MouseWheelEvent e )
            {
                if ( mouseWheelScrollingEnabled && comboBox.isEnabled () && isFocused () )

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        popup = defaults.popup;


        // We don't seem to get the initial focus event?
        focusedComponentRef = new WeakReference<JEditTextArea>(this);


        addMouseWheelListener(new MouseWheelListener() {


            public void mouseWheelMoved(MouseWheelEvent e) {
                if ((e.getModifiers() & Toolkit.getDefaultToolkit().getMenuShortcutKeyMask()) == Toolkit
                        .getDefaultToolkit().getMenuShortcutKeyMask()) {
                    int caretLine = getCaretLine();

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        graphMouse.setMode(ModalGraphMouse.Mode.PICKING);
        layout.initialize();
        scrollPane = new GraphZoomScrollPane(visualizationViewer);
        final JScrollBar vScrollBar = scrollPane.getVerticalScrollBar();
        visualizationViewer.addMouseWheelListener(
            new MouseWheelListener() {
                @Override
                public void mouseWheelMoved(final MouseWheelEvent e) {
                    if ((e.getModifiers() & MouseWheelEvent.CTRL_MASK) > 0) {
                        final int amount = e.getWheelRotation();
                        vScrollBar.setValue(vScrollBar.getValue() + amount * 20);

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      public void mouseReleased(MouseEvent arg0) {


      }
    });


    imageComponent.addMouseWheelListener(new MouseWheelListener() {
      @Override
      public void mouseWheelMoved(MouseWheelEvent e) {
        float dx = x1 - x0;
        float dy = y1 - y0;
        float delta = -1.0f * e.getWheelRotation() / 20.0f;

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                super.mousePressed(e);
                scroll = false;
            }
        });
        
        scrollPane.addMouseWheelListener(new MouseWheelListener() {
            
            @Override
            public void mouseWheelMoved(MouseWheelEvent e) {
                scroll = false;
            }

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    public void setScreenFields() throws ClipsException {
        /**
         * Листенер, перехватывающий прокрутку колеса и передающий его основной скролпанели
         */
        MouseWheelListener mwl = new MouseWheelListener() {


            @Override
            public void mouseWheelMoved(MouseWheelEvent evt) {
                jScrollPane1.dispatchEvent(evt);
                evt.consume();

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        /**
         * sideToolBar: decide scroll- and visibility
         */
        if(Main.pref.getBoolean("sidetoolbar.scrollable", true)) {
            final ScrollViewport svp = new ScrollViewport(sideToolBar, ScrollViewport.VERTICAL_DIRECTION);
            svp.addMouseWheelListener(new MouseWheelListener() {
                @Override
                public void mouseWheelMoved(MouseWheelEvent e) {
                    svp.scroll(0, e.getUnitsToScroll() * 5);
                }
            });

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        if (SwingUtilities.isLeftMouseButton(e)) {
          handleMouseRelease(e);
        }
      }
    });
    canvas.addMouseWheelListener(new MouseWheelListener() {
      @Override
      public void mouseWheelMoved(MouseWheelEvent mwe) {
        int x = mwe.getX();
        int y = mwe.getY();
        int rot = mwe.getWheelRotation();

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