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/*
* Jitsi, the OpenSource Java VoIP and Instant Messaging client.
*
* Copyright @ 2015 Atlassian Pty Ltd
*
* Licensed 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 net.java.sip.communicator.plugin.desktoputil;
import java.awt.*;
import java.awt.event.*;
/**
*
* @author Yana Stamcheva
*/
public class ComponentMover
{
/**
* Registers the given component for component dragging/moving functionality.
*
* @param c the component, which should be moved on drag
*/
public static void registerComponent(Component c)
{
MoverMouseListener l = new MoverMouseListener();
c.addMouseListener(l);
c.addMouseMotionListener(l);
}
/**
* The Mouse listener for local video. It is responsible for dragging local
* video.
*/
private static class MoverMouseListener
implements MouseListener,
MouseMotionListener
{
/**
* Indicates if we're currently during a drag operation.
*/
private boolean inDrag = false;
/**
* The previous x coordinate of the drag.
*/
private int previousX = 0;
/**
* The previous y coordinate of the drag.
*/
private int previousY = 0;
/**
* Indicates that the mouse has been dragged.
*
* @param event the <tt>MouseEvent</tt> that notified us
*/
public void mouseDragged(MouseEvent event)
{
Point p = event.getPoint();
if (inDrag)
{
Component c = (Component) event.getSource();
int newX = c.getX() + p.x - previousX;
int newY = c.getY() + p.y - previousY;
c.setLocation(newX, newY);
}
}
public void mouseMoved(MouseEvent event) {}
public void mouseClicked(MouseEvent event) {}
public void mouseEntered(MouseEvent event) {}
public void mouseExited(MouseEvent event) {}
/**
* Indicates that the mouse has been pressed.
*
* @param event the <tt>MouseEvent</tt> that notified us
*/
public void mousePressed(MouseEvent event)
{
Point p = event.getPoint();
previousX = p.x;
previousY = p.y;
inDrag = true;
}
/**
* Indicates that the mouse has been released.
*
* @param event the <tt>MouseEvent</tt> that notified us
*/
public void mouseReleased(MouseEvent event)
{
inDrag = false;
previousX = 0;
previousY = 0;
}
}
}
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