java.awt.event.KeyEvent#VK_NUM_LOCK源码实例Demo

@Override
public boolean getLockingKeyState(int key) {
    if (! (key == KeyEvent.VK_CAPS_LOCK || key == KeyEvent.VK_NUM_LOCK ||
           key == KeyEvent.VK_SCROLL_LOCK || key == KeyEvent.VK_KANA_LOCK)) {
        throw new IllegalArgumentException("invalid key for Toolkit.getLockingKeyState");
    }
    awtLock();
    try {
        return getModifierState( key );
    } finally {
        awtUnlock();
    }
}
 

@Override
public boolean getLockingKeyState(int key) {
    if (! (key == KeyEvent.VK_CAPS_LOCK || key == KeyEvent.VK_NUM_LOCK ||
           key == KeyEvent.VK_SCROLL_LOCK || key == KeyEvent.VK_KANA_LOCK)) {
        throw new IllegalArgumentException("invalid key for Toolkit.getLockingKeyState");
    }
    return getLockingKeyStateNative(key);
}
 

@Override
public boolean getLockingKeyState(int key) {
    if (! (key == KeyEvent.VK_CAPS_LOCK || key == KeyEvent.VK_NUM_LOCK ||
           key == KeyEvent.VK_SCROLL_LOCK || key == KeyEvent.VK_KANA_LOCK)) {
        throw new IllegalArgumentException("invalid key for Toolkit.getLockingKeyState");
    }
    awtLock();
    try {
        return getModifierState( key );
    } finally {
        awtUnlock();
    }
}
 

@Override
public boolean getLockingKeyState(int key) {
    if (! (key == KeyEvent.VK_CAPS_LOCK || key == KeyEvent.VK_NUM_LOCK ||
           key == KeyEvent.VK_SCROLL_LOCK || key == KeyEvent.VK_KANA_LOCK)) {
        throw new IllegalArgumentException("invalid key for Toolkit.getLockingKeyState");
    }
    awtLock();
    try {
        return getModifierState( key );
    } finally {
        awtUnlock();
    }
}
 

@Override
public boolean getLockingKeyState(int key) {
    if (! (key == KeyEvent.VK_CAPS_LOCK || key == KeyEvent.VK_NUM_LOCK ||
           key == KeyEvent.VK_SCROLL_LOCK || key == KeyEvent.VK_KANA_LOCK)) {
        throw new IllegalArgumentException("invalid key for Toolkit.getLockingKeyState");
    }
    return getLockingKeyStateNative(key);
}
 

@Override
public boolean getLockingKeyState(int key) {
    if (! (key == KeyEvent.VK_CAPS_LOCK || key == KeyEvent.VK_NUM_LOCK ||
           key == KeyEvent.VK_SCROLL_LOCK || key == KeyEvent.VK_KANA_LOCK)) {
        throw new IllegalArgumentException("invalid key for Toolkit.getLockingKeyState");
    }
    awtLock();
    try {
        return getModifierState( key );
    } finally {
        awtUnlock();
    }
}
 

@Override
public boolean getLockingKeyState(int keyCode) throws UnsupportedOperationException {
    switch (keyCode) {
        case KeyEvent.VK_NUM_LOCK:
        case KeyEvent.VK_SCROLL_LOCK:
        case KeyEvent.VK_KANA_LOCK:
            throw new UnsupportedOperationException("Toolkit.getLockingKeyState");

        case KeyEvent.VK_CAPS_LOCK:
            return isCapsLockOn();

        default:
            throw new IllegalArgumentException("invalid key for Toolkit.getLockingKeyState");
    }
}
 

@Override
public boolean getLockingKeyState(int key) {
    if (! (key == KeyEvent.VK_CAPS_LOCK || key == KeyEvent.VK_NUM_LOCK ||
           key == KeyEvent.VK_SCROLL_LOCK || key == KeyEvent.VK_KANA_LOCK)) {
        throw new IllegalArgumentException("invalid key for Toolkit.getLockingKeyState");
    }
    return getLockingKeyStateNative(key);
}
 

@Override
public boolean getLockingKeyState(int key) {
    if (! (key == KeyEvent.VK_CAPS_LOCK || key == KeyEvent.VK_NUM_LOCK ||
           key == KeyEvent.VK_SCROLL_LOCK || key == KeyEvent.VK_KANA_LOCK)) {
        throw new IllegalArgumentException("invalid key for Toolkit.getLockingKeyState");
    }
    return getLockingKeyStateNative(key);
}
 

@Override
public boolean getLockingKeyState(int key) {
    if (! (key == KeyEvent.VK_CAPS_LOCK || key == KeyEvent.VK_NUM_LOCK ||
           key == KeyEvent.VK_SCROLL_LOCK || key == KeyEvent.VK_KANA_LOCK)) {
        throw new IllegalArgumentException("invalid key for Toolkit.getLockingKeyState");
    }
    awtLock();
    try {
        return getModifierState( key );
    } finally {
        awtUnlock();
    }
}
 

@Override
public void setLockingKeyState(int key, boolean on) {
    if (! (key == KeyEvent.VK_CAPS_LOCK || key == KeyEvent.VK_NUM_LOCK ||
           key == KeyEvent.VK_SCROLL_LOCK || key == KeyEvent.VK_KANA_LOCK)) {
        throw new IllegalArgumentException("invalid key for Toolkit.setLockingKeyState");
    }
    setLockingKeyStateNative(key, on);
}
 

@Override
public boolean getLockingKeyState(int key) {
    if (! (key == KeyEvent.VK_CAPS_LOCK || key == KeyEvent.VK_NUM_LOCK ||
           key == KeyEvent.VK_SCROLL_LOCK || key == KeyEvent.VK_KANA_LOCK)) {
        throw new IllegalArgumentException("invalid key for Toolkit.getLockingKeyState");
    }
    return getLockingKeyStateNative(key);
}
 

@Override
public boolean getLockingKeyState(int keyCode) throws UnsupportedOperationException {
    switch (keyCode) {
        case KeyEvent.VK_NUM_LOCK:
        case KeyEvent.VK_SCROLL_LOCK:
        case KeyEvent.VK_KANA_LOCK:
            throw new UnsupportedOperationException("Toolkit.getLockingKeyState");

        case KeyEvent.VK_CAPS_LOCK:
            return isCapsLockOn();

        default:
            throw new IllegalArgumentException("invalid key for Toolkit.getLockingKeyState");
    }
}
 

@Override
public boolean getLockingKeyState(int keyCode) throws UnsupportedOperationException {
    switch (keyCode) {
        case KeyEvent.VK_NUM_LOCK:
        case KeyEvent.VK_SCROLL_LOCK:
        case KeyEvent.VK_KANA_LOCK:
            throw new UnsupportedOperationException("Toolkit.getLockingKeyState");

        case KeyEvent.VK_CAPS_LOCK:
            return isCapsLockOn();

        default:
            throw new IllegalArgumentException("invalid key for Toolkit.getLockingKeyState");
    }
}
 

public boolean getLockingKeyState(int key) {
    if (! (key == KeyEvent.VK_CAPS_LOCK || key == KeyEvent.VK_NUM_LOCK ||
           key == KeyEvent.VK_SCROLL_LOCK || key == KeyEvent.VK_KANA_LOCK)) {
        throw new IllegalArgumentException("invalid key for Toolkit.getLockingKeyState");
    }
    return getLockingKeyStateNative(key);
}
 

@Override
public void setLockingKeyState(int key, boolean on) {
    if (! (key == KeyEvent.VK_CAPS_LOCK || key == KeyEvent.VK_NUM_LOCK ||
           key == KeyEvent.VK_SCROLL_LOCK || key == KeyEvent.VK_KANA_LOCK)) {
        throw new IllegalArgumentException("invalid key for Toolkit.setLockingKeyState");
    }
    setLockingKeyStateNative(key, on);
}
 

@Override
public boolean getLockingKeyState(int key) {
    if (! (key == KeyEvent.VK_CAPS_LOCK || key == KeyEvent.VK_NUM_LOCK ||
           key == KeyEvent.VK_SCROLL_LOCK || key == KeyEvent.VK_KANA_LOCK)) {
        throw new IllegalArgumentException("invalid key for Toolkit.getLockingKeyState");
    }
    awtLock();
    try {
        return getModifierState( key );
    } finally {
        awtUnlock();
    }
}
 

@Override
public boolean getLockingKeyState(int key) {
    if (! (key == KeyEvent.VK_CAPS_LOCK || key == KeyEvent.VK_NUM_LOCK ||
           key == KeyEvent.VK_SCROLL_LOCK || key == KeyEvent.VK_KANA_LOCK)) {
        throw new IllegalArgumentException("invalid key for Toolkit.getLockingKeyState");
    }
    awtLock();
    try {
        return getModifierState( key );
    } finally {
        awtUnlock();
    }
}
 

@Override
@SuppressWarnings("Duplicates")
protected synchronized void doHandleKeyPress(KeyEvent e) {
    if (handler == null) return;
    //LOGGER.debug("key pressed: " + e.paramString());

    // Get code of the pressed key.
    // Keypad arrows are translated to regular arrow keys.
    final int keyCode;
    switch (e.getKeyCode()) {
        case KeyEvent.VK_KP_DOWN:
            keyCode = KeyEvent.VK_DOWN;
            break;
        case KeyEvent.VK_KP_LEFT:
            keyCode = KeyEvent.VK_LEFT;
            break;
        case KeyEvent.VK_KP_RIGHT:
            keyCode = KeyEvent.VK_RIGHT;
            break;
        case KeyEvent.VK_KP_UP:
            keyCode = KeyEvent.VK_UP;
            break;
        default:
            keyCode = e.getKeyCode();
            break;
    }

    // Never press undefined key codes.
    if (keyCode == KeyEvent.VK_UNDEFINED) {
        return;
    }

    // Never send caps lock, num lock and scroll lock key.
    if (keyCode == KeyEvent.VK_CAPS_LOCK || keyCode == KeyEvent.VK_NUM_LOCK || keyCode == KeyEvent.VK_SCROLL_LOCK) {
        return;
    }

    // Detect, if a control key was pressed.
    final boolean isControlKey = e.isActionKey() ||
            keyCode == KeyEvent.VK_BACK_SPACE ||
            keyCode == KeyEvent.VK_DELETE ||
            keyCode == KeyEvent.VK_ENTER ||
            keyCode == KeyEvent.VK_SPACE ||
            keyCode == KeyEvent.VK_TAB ||
            keyCode == KeyEvent.VK_ESCAPE ||
            keyCode == KeyEvent.VK_ALT ||
            keyCode == KeyEvent.VK_ALT_GRAPH ||
            keyCode == KeyEvent.VK_CONTROL ||
            keyCode == KeyEvent.VK_SHIFT ||
            keyCode == KeyEvent.VK_META;

    // Press control keys.
    if (isControlKey) {
        //LOGGER.debug("press key \"{}\" ({})", keyCode, KeyEvent.getKeyText(keyCode));
        handler.sendKeyPress(keyCode);
        e.consume();
    }

    // Press other keys, if they are pressed together with a modifier key.
    else if (e.isControlDown() || e.isMetaDown() || windowsKeyDown || (!SystemUtils.IS_OS_MAC && e.isAltDown())) {
        //LOGGER.debug("press key \"{}\" ({})", keyCode, KeyEvent.getKeyText(keyCode));
        handler.sendKeyPress(keyCode);
        if (!pressedKeys.contains(keyCode))
            pressedKeys.add(keyCode);
        e.consume();
    }

    // Remember, that the Windows key was pressed.
    if (keyCode == KeyEvent.VK_WINDOWS) {
        synchronized (Frame.this) {
            windowsKeyDown = true;
        }
    }
}
 

public static String getKeyText(int code) {
  switch (code) {
    case KeyEvent.VK_BACK_SPACE:     return BACKSPACE;
    case KeyEvent.VK_ESCAPE:         return ESCAPE;
    case KeyEvent.VK_CAPS_LOCK:      return CAPS_LOCK;
    case KeyEvent.VK_TAB:            return TAB;
    case KeyEvent.VK_SPACE:          return SPACE;
    case KeyEvent.VK_DELETE:         return DELETE;
    case KeyEvent.VK_HOME:           return HOME;
    case KeyEvent.VK_END:            return END;
    case KeyEvent.VK_PAGE_UP:        return PAGE_UP;
    case KeyEvent.VK_PAGE_DOWN:      return PAGE_DOWN;
    case KeyEvent.VK_UP:             return UP;
    case KeyEvent.VK_DOWN:           return DOWN;
    case KeyEvent.VK_LEFT:           return LEFT;
    case KeyEvent.VK_RIGHT:          return RIGHT;
    case KeyEvent.VK_NUM_LOCK:       return NUMBER_LOCK;
    case KeyEvent.VK_ENTER:          return RETURN;
    case KeyEvent.VK_BACK_QUOTE:     return "`";
    case KeyEvent.VK_NUMBER_SIGN:    return NUM_PAD;
    case KeyEvent.VK_MULTIPLY:       return NUM_PAD + " *";
    case KeyEvent.VK_ADD:            return "+";
    case KeyEvent.VK_SEPARATOR:      return ",";
    case KeyEvent.VK_SUBTRACT:       return "-";
    case KeyEvent.VK_DECIMAL:        return ".";
    case KeyEvent.VK_DIVIDE:         return "/";
    case KeyEvent.VK_NUMPAD0:        return "0";
    case KeyEvent.VK_NUMPAD1:        return "1";
    case KeyEvent.VK_NUMPAD2:        return "2";
    case KeyEvent.VK_NUMPAD3:        return "3";
    case KeyEvent.VK_NUMPAD4:        return "4";
    case KeyEvent.VK_NUMPAD5:        return "5";
    case KeyEvent.VK_NUMPAD6:        return "6";
    case KeyEvent.VK_NUMPAD7:        return "7";
    case KeyEvent.VK_NUMPAD8:        return "8";
    case KeyEvent.VK_NUMPAD9:        return "9";
    case KeyEvent.VK_SLASH:          return "/";
    case KeyEvent.VK_BACK_SLASH:     return "\\";
    case KeyEvent.VK_PERIOD:         return ".";
    case KeyEvent.VK_SEMICOLON:      return ";";
    case KeyEvent.VK_CLOSE_BRACKET:  return "]";
    case KeyEvent.VK_OPEN_BRACKET:   return "[";
    case KeyEvent.VK_EQUALS:         return "=";
    case KeyEvent.VK_MINUS:          return "-";
    case KeyEvent.VK_PLUS:           return "+";
    case 0:                          return "fn";
  }
  return KeyEvent.getKeyText(code);
}