Java tutorial
//package com.java2s; /* * This file is part of WebLookAndFeel library. * * WebLookAndFeel library is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * WebLookAndFeel library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with WebLookAndFeel library. If not, see <http://www.gnu.org/licenses/>. */ import java.awt.Component; import java.awt.Container; import java.awt.Rectangle; public class Main { /** * Returns top component inside the specified container component at the * specified point. * * @param component * container component to process * @param x * X coordinate * @param y * Y coordinate * @return top component inside the specified container component at the * specified point */ public static Component getTopComponentAt(final Component component, final int x, final int y) { final Component child = component.getComponentAt(x, y); if (child == component || !(child instanceof Container)) { return component; } else { final Rectangle b = child.getBounds(); return getTopComponentAt(child, x - b.x, y - b.y); } } }