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package com.explodingpixels.widgets;
import java.awt.Component;
import java.awt.Point;
import java.awt.Window;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.awt.event.MouseMotionAdapter;
import javax.swing.SwingUtilities;
public class WindowDragger {
private Window fWindow;
private Component fComponent;
private int dX;
private int dY;
public WindowDragger(Window window, Component component) {
fWindow = window;
fComponent = component;
fComponent.addMouseListener(createMouseListener());
fComponent.addMouseMotionListener(createMouseMotionListener());
}
private MouseListener createMouseListener() {
return new MouseAdapter() {
@Override
public void mousePressed(MouseEvent e) {
Point clickPoint = new Point(e.getPoint());
SwingUtilities.convertPointToScreen(clickPoint, fComponent);
dX = clickPoint.x - fWindow.getX();
dY = clickPoint.y - fWindow.getY();
}
};
}
private MouseMotionAdapter createMouseMotionListener() {
return new MouseMotionAdapter() {
@Override
public void mouseDragged(MouseEvent e) {
Point dragPoint = new Point(e.getPoint());
SwingUtilities.convertPointToScreen(dragPoint, fComponent);
fWindow.setLocation(dragPoint.x - dX, dragPoint.y - dY);
}
};
}
}
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