win32rubberband.java

定要上载质量高而定要上载质量高而定要上载质量高而定要上载质量高而定要上载质量高而

/*
 * Created on Aug 31, 2004
 *
 * To change the template for this generated file go to
 * Window>Preferences>Java>Code Generation>Code and Comments
 */
package org.flexdock.docking.drag.outline.win32;

import java.awt.Graphics;
import java.awt.Rectangle;

import org.flexdock.docking.drag.effects.RubberBand;
import org.flexdock.util.ResourceManager;

/**
 * @author Christopher Butler
 *
 * To change the template for this generated type comment go to
 * Window>Preferences>Java>Code Generation>Code and Comments
 */
public class Win32RubberBand extends RubberBand {
	private static final String NATIVE_RESOURCE = "org/flexdock/docking/drag/outline/win32/RubberBand.dll";
	private static final String NATIVE_LIB = "RubberBand";
	
	private static final Win32RubberBand SINGLETON = new Win32RubberBand();
	private Rectangle currentRect;
	
	private native void drawRectangle(int x, int y, int width, int height);
	private native void clearRectangle(int x, int y, int width, int height);
	private native void cleanup();
	
	static {
		ResourceManager.loadLibrary(NATIVE_LIB, NATIVE_RESOURCE);
	}
	
	public Win32RubberBand() {
		
	}
	
	public void paint(Graphics g, Rectangle r) {
		clear();
		currentRect = r;
		draw(currentRect, true);
	}
	
	public void clear() {
		draw(currentRect, false);
		currentRect = null;
	}
	
	private void draw(Rectangle r, boolean xor) {
		if(r==null)
			return;
		
		if(xor)
			drawRectangle(r.x, r.y, r.width, r.height);
		else
			clearRectangle(r.x, r.y, r.width, r.height);
	}
}