keyevent.java

来自「纯java操作系统jnode,安装简单和操作简单的个人使用的Java操作系统」· Java 代码 · 共 111 行

/* class KeyEvent
 *
 * Copyright (C) 2001-2003  R M Pitman
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

package charva.awt.event;

import charva.awt.Component;
import charva.awt.Toolkit;

/**
 * An event which indicates that a keystroke occurred in an object.
 */
public class KeyEvent
    extends InputEvent
{
    private int _key;

    public KeyEvent(int key_, int id_, Component source_) {
	super(source_, id_);
	_key = key_;
    }

    /**
     * Return the integer key code.
     */
    public int getKeyCode() { return _key; }

    /** Return the character (in the case of a KEY_TYPED event).
     */
    public char getKeyChar() {
	if (super.getID() == AWTEvent.KEY_PRESSED)
	    return CHAR_UNDEFINED;
	else
	    return (char) _key;
    }

    /**
     * Set the key code to indicate a physical key was pressed
     */
    public void setKeyCode(int key_) { _key = key_; }

    /**
     * Returns true if the key code is greater than 255, indicating
     * that it is a function key.
     */
    public boolean isActionKey() { return (_key >= 256); }

    public String toString() {
	return ("KeyEvent: key=" + Toolkit.key2ASCII(getKeyCode()) + 
	    " source=[" + getSource() + "]");
    }

    //public static final int KEY_PRESSED	    = 1;
    //public static final int KEY_TYPED	    = 2;

    /** KEY_PRESSED events that don't map to a valid character 
     * cause the keyPressed() method to return this value.
     */
    public static final char CHAR_UNDEFINED  = (char) -1;

    public static final int VK_ESCAPE	    = 0x1b;
    public static final int VK_DOWN	    = 0402;
    public static final int VK_UP	    = 0403;
    public static final int VK_LEFT	    = 0404;
    public static final int VK_RIGHT	    = 0405;
    public static final int VK_HOME	    = 0406;
    public static final int VK_BACK_SPACE   = 0407;
    public static final int VK_F1	    = 0411;
    public static final int VK_F2	    = 0412;
    public static final int VK_F3	    = 0413;
    public static final int VK_F4	    = 0414;
    public static final int VK_F5	    = 0415;
    public static final int VK_F6	    = 0416;
    public static final int VK_F7	    = 0417;
    public static final int VK_F8	    = 0420;
    public static final int VK_F9	    = 0421;
    public static final int VK_F10	    = 0422;
    public static final int VK_F11	    = 0423;
    public static final int VK_F12	    = 0424;
    public static final int VK_F13	    = 0425;
    public static final int VK_F14	    = 0426;
    public static final int VK_F15	    = 0427;
    public static final int VK_F16	    = 0430;
    public static final int VK_F17	    = 0431;
    public static final int VK_F18	    = 0432;
    public static final int VK_F19	    = 0433;
    public static final int VK_F20	    = 0434;
    public static final int VK_DELETE	    = 0512;
    public static final int VK_INSERT	    = 0513;
    public static final int VK_PAGE_DOWN    = 0522;
    public static final int VK_PAGE_UP	    = 0523;
    public static final int VK_ENTER	    = 0527;
    public static final int VK_BACK_TAB	    = 0541;
    public static final int VK_END	    = 0550;
}