/* Copyright (C) 2002-2005 RealVNC Ltd.  All Rights Reserved.
 * Copyright 2009-2011 Pierre Ossman for Cendio AB
 * Copyright (C) 2011 Brian P. Hinz
 * Copyright (C) 2012 D. R. Commander.  All Rights Reserved.
 *
 * This 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 2 of the License, or
 * (at your option) any later version.
 *
 * This software 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 this software; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
 * USA.
 */

package com.turbovnc.rfb;

import com.turbovnc.rdr.*;
import java.util.*;

public class CMsgWriterV3 extends CMsgWriter {

  public CMsgWriterV3(ConnParams cp_, OutStream os_) { super(cp_, os_); }

  synchronized public void writeClientInit(boolean shared) {
    os.writeU8(shared ? 1 : 0);
    endMsg();
  }

  synchronized public void startMsg(int type) {
    os.writeU8(type);
  }

  synchronized public void endMsg() {
    os.flush();
  }

  synchronized public void writeSetDesktopSize(int width, int height,
                                               ScreenSet layout) {
    if (!cp.supportsSetDesktopSize)
      throw new ErrorException("Server does not support SetDesktopSize");

    startMsg(MsgTypes.msgTypeSetDesktopSize);
    os.pad(1);

    os.writeU16(width);
    os.writeU16(height);

    os.writeU8(layout.numScreens());
    os.pad(1);

    for (Iterator<Screen> iter = layout.screens.iterator(); iter.hasNext(); ) {
      Screen refScreen = (Screen)iter.next();
      os.writeU32(refScreen.id);
      os.writeU16(refScreen.dimensions.tl.x);
      os.writeU16(refScreen.dimensions.tl.y);
      os.writeU16(refScreen.dimensions.width());
      os.writeU16(refScreen.dimensions.height());
      os.writeU32(refScreen.flags);
    }

    endMsg();
  }

  synchronized public void writeFence(int flags, int len, byte[] data) {
    if (!cp.supportsFence)
      throw new ErrorException("Server does not support fences");
    if (len > 64)
      throw new ErrorException("Fence payload too large");
    if ((flags & ~fenceTypes.fenceFlagsSupported) != 0)
      throw new ErrorException("Unknown fence flags");

    startMsg(MsgTypes.msgTypeClientFence);
    os.pad(3);

    os.writeU32(flags);

    os.writeU8(len);
    os.writeBytes(data, 0, len);

    endMsg();
  }

  synchronized public void writeEnableContinuousUpdates(boolean enable,
                                                        int x, int y,
                                                        int w, int h) {
    if (!cp.supportsContinuousUpdates)
      throw new ErrorException("Server does not support continuous updates");

    startMsg(MsgTypes.msgTypeEnableContinuousUpdates);

    os.writeU8((enable ? 1 : 0));

    os.writeU16(x);
    os.writeU16(y);
    os.writeU16(w);
    os.writeU16(h);

    endMsg();
  }
}
