예제 #1
0
 @Override
 public void mousePressed(MouseEvent e) {
   JList list = (JList) e.getComponent();
   Point pt = e.getPoint();
   int index = list.locationToIndex(pt);
   if (index >= 0) {
     JButton button = getButton(list, pt, index);
     if (Objects.nonNull(button)) {
       listRepaint(list, list.getCellBounds(index, index));
     }
   }
 }
예제 #2
0
 @Override
 public void mouseMoved(MouseEvent e) {
   JList list = (JList) e.getComponent();
   Point pt = e.getPoint();
   int index = list.locationToIndex(pt);
   if (!list.getCellBounds(index, index).contains(pt)) {
     if (prevIndex >= 0) {
       Rectangle r = list.getCellBounds(prevIndex, prevIndex);
       listRepaint(list, r);
     }
     index = -1;
     prevButton = null;
     return;
   }
   if (index >= 0) {
     JButton button = getButton(list, pt, index);
     ButtonsRenderer renderer = (ButtonsRenderer) list.getCellRenderer();
     if (Objects.nonNull(button)) {
       renderer.rolloverIndex = index;
       if (!button.equals(prevButton)) {
         Rectangle r = list.getCellBounds(prevIndex, index);
         listRepaint(list, r);
       }
     } else {
       renderer.rolloverIndex = -1;
       Rectangle r = null;
       if (prevIndex == index) {
         if (prevIndex >= 0 && Objects.nonNull(prevButton)) {
           r = list.getCellBounds(prevIndex, prevIndex);
         }
       } else {
         r = list.getCellBounds(index, index);
       }
       listRepaint(list, r);
       prevIndex = -1;
     }
     prevButton = button;
   }
   prevIndex = index;
 }
예제 #3
0
 @SuppressWarnings("unchecked")
 private static JButton getButton(JList list, Point pt, int index) {
   Container c =
       (Container)
           list.getCellRenderer().getListCellRendererComponent(list, "", index, false, false);
   Rectangle r = list.getCellBounds(index, index);
   c.setBounds(r);
   // c.doLayout(); //may be needed for mone LayoutManager
   pt.translate(-r.x, -r.y);
   Component b = SwingUtilities.getDeepestComponentAt(c, pt.x, pt.y);
   if (b instanceof JButton) {
     return (JButton) b;
   } else {
     return null;
   }
 }