com.codename1.impl.javase.PeerComponentBuffer Maven / Gradle / Ivy

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package com.codename1.impl.javase;

import com.codename1.impl.javase.JavaSEPort.Peer;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.image.BufferedImage;
import java.awt.image.ImageObserver;
import java.lang.ref.WeakReference;

/**
 *
 * @author shannah
 */
public class PeerComponentBuffer {
    private BufferedImage bufferedImage_;
    private Object lock = new Object();
    private WeakReference peerRef;
    
    public void paint(Graphics2D g, ImageObserver obs) {
        BufferedImage img;
        synchronized (lock) {
            img = bufferedImage_;
        
            if (img != null) {
                g.drawImage(img, 0, 0, obs);
            }
        }
    }
    
    
    public void setBufferedImage(BufferedImage img) {
        synchronized(lock) {
            bufferedImage_ = img;
        }
    }
    
    public BufferedImage getBufferedImage() {
        synchronized(lock) {
            return bufferedImage_;
        }
    }
    
    public void repaint() {
        Peer peer = peerRef.get();
        if (peer != null) {
            peer.repaint();
        }
    }
    
    public void repaint(int x, int y, int w, int h) {
        Peer peer = peerRef.get();
        if (peer != null) {
            double scale = JavaSEPort.instance.zoomLevel;
            peer.repaint((int)(peer.getAbsoluteX()+x/scale), (int)(peer.getAbsoluteY()+y/scale), (int)((w+1)/scale), (int)((h+1)/scale));
            //peer.repaint(x, y, w, h);
        }
    }
    
    public void setPeer(Peer peer) {
        this.peerRef = new WeakReference(peer);
    }
    
    public void modifyBuffer(Runnable r) {
        synchronized(lock) {
            r.run();
        }
    }
}