MouseInfo.java revision 1714
0N/A * Copyright 2003 Sun Microsystems, Inc. All Rights Reserved. 0N/A * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 0N/A * This code is free software; you can redistribute it and/or modify it 0N/A * under the terms of the GNU General Public License version 2 only, as 0N/A * published by the Free Software Foundation. Sun designates this 0N/A * particular file as subject to the "Classpath" exception as provided 0N/A * by Sun in the LICENSE file that accompanied this code. 0N/A * This code is distributed in the hope that it will be useful, but WITHOUT 0N/A * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 0N/A * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 0N/A * version 2 for more details (a copy is included in the LICENSE file that 0N/A * accompanied this code). 0N/A * You should have received a copy of the GNU General Public License version 0N/A * 2 along with this work; if not, write to the Free Software Foundation, 0N/A * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 0N/A * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, 0N/A * CA 95054 USA or visit www.sun.com if you need additional information or 0N/A * have any questions. 0N/A * <code>MouseInfo</code> provides methods for getting information about the mouse, 0N/A * such as mouse pointer location and the number of mouse buttons. 0N/A * @author Roman Poborchiy 0N/A * Private constructor to prevent instantiation. 0N/A * Returns a <code>PointerInfo</code> instance that represents the current 0N/A * location of the mouse pointer. 0N/A * The <code>GraphicsDevice</code> stored in this <code>PointerInfo</code> 0N/A * contains the mouse pointer. The coordinate system used for the mouse position 0N/A * depends on whether or not the <code>GraphicsDevice</code> is part of a virtual 0N/A * For virtual screen devices, the coordinates are given in the virtual 0N/A * coordinate system, otherwise they are returned in the coordinate system 0N/A * of the <code>GraphicsDevice</code>. See {@link GraphicsConfiguration} 0N/A * for more information about the virtual screen devices. 0N/A * On systems without a mouse, returns <code>null</code>. 0N/A * If there is a security manager, its <code>checkPermission</code> method 0N/A * is called with an <code>AWTPermission("watchMousePointer")</code> 0N/A * permission before creating and returning a <code>PointerInfo</code> 0N/A * object. This may result in a <code>SecurityException</code>. 0N/A * @exception HeadlessException if GraphicsEnvironment.isHeadless() returns true 0N/A * @exception SecurityException if a security manager exists and its 0N/A * <code>checkPermission</code> method doesn't allow the operation 0N/A * @see GraphicsConfiguration 0N/A * @see SecurityManager#checkPermission 0N/A * @see java.awt.AWTPermission 0N/A * @return location of the mouse pointer 0N/A * Returns the number of buttons on the mouse. 0N/A * On systems without a mouse, returns <code>-1</code>. 0N/A * @exception HeadlessException if GraphicsEnvironment.isHeadless() returns true 0N/A * @return number of buttons on the mouse 0N/A // This should never happen. 0N/A assert false :
"awt.mouse.numButtons is not an integer property";