// Licensed to the Apache Software Foundation (ASF) under one
// or more contributor license agreements. See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership. The ASF licenses this file
// to you under the Apache License, Version 2.0 (the
// "License"); you may not use this file except in compliance
// with the License. You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing,
// software distributed under the License is distributed on an
// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, either express or implied. See the License for the
// specific language governing permissions and limitations
// under the License.
package vncclient.adapter;
import java.awt.event.MouseEvent;
import common.MouseOrder;
import streamer.BaseElement;
import streamer.ByteBuffer;
import streamer.Link;
import vncclient.vnc.RfbConstants;
public class AwtVncMouseAdapter extends BaseElement {
public AwtVncMouseAdapter(String id) {
super(id);
}
@Override
public void handleData(ByteBuffer buf, Link link) {
if (verbose)
System.out.println("[" + this + "] INFO: Data received: " + buf + ".");
// Get mouse event
MouseOrder order = (MouseOrder)buf.getOrder();
ByteBuffer outBuf = new ByteBuffer(6);
outBuf.writeByte(RfbConstants.CLIENT_POINTER_EVENT);
int buttonMask = mapAwtModifiersToVncButtonMask(order.event.getModifiersEx());
outBuf.writeByte(buttonMask);
outBuf.writeShort(order.event.getX());
outBuf.writeShort(order.event.getY());
pushDataToAllOuts(outBuf);
}
/**
* Current state of buttons 1 to 8 are represented by bits 0 to 7 of
* button-mask respectively, 0 meaning up, 1 meaning down (pressed). On a
* conventional mouse, buttons 1, 2 and 3 correspond to the left, middle and
* right buttons on the mouse. On a wheel mouse, each step of the wheel
* upwards is represented by a press and release of button 4, and each step
* downwards is represented by a press and release of button 5.
*
* @param modifiers
* extended modifiers from AWT mouse event
* @return VNC mouse button mask
*/
public static int mapAwtModifiersToVncButtonMask(int modifiers) {
int mask = (((modifiers & MouseEvent.BUTTON1_DOWN_MASK) != 0) ? 0x1 : 0) | (((modifiers & MouseEvent.BUTTON2_DOWN_MASK) != 0) ? 0x2 : 0)
| (((modifiers & MouseEvent.BUTTON3_DOWN_MASK) != 0) ? 0x4 : 0);
return mask;
}
}