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This is a backport of OpenJFX 8 to run on Java 7.

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/*
 * Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved.
 */
package com.sun.webkit.graphics;

import java.nio.ByteBuffer;

public abstract class WCImage extends Ref {
    private WCRenderQueue rq;

    public abstract int getWidth();

    public abstract int getHeight();

    public Object getPlatformImage() {return null;}

    protected abstract String toDataURL(String mimeType);

    public ByteBuffer getPixelBuffer() {return null;}

    protected void drawPixelBuffer() {}

    public synchronized void setRQ(WCRenderQueue rq) {
        this.rq = rq;
    }

    // should be called on render thread
    protected synchronized void flushRQ() {
        if (rq != null) {
            rq.decode();
        }
    }

    protected synchronized boolean isDirty() {
        return (rq == null)
           ? false
           : !rq.isEmpty();
    }

    public static WCImage getImage(Object imgFrame) {
        WCImage img = null;
        if (imgFrame instanceof WCImage) {
            //from BufferImage.drawPattern (canvas/fill layer):
            //NativeImagePtr is a wrapper over the WCImage
            img = (WCImage)imgFrame;
        } else if (imgFrame instanceof WCImageFrame) {
            //from BitmapImage.drawPattern (decoder/GIF animator):
            //NativeImagePtr is a wrapper over the WCImageFrame
            img = ((WCImageFrame)imgFrame).getFrame();
        }
        return img;
    }
}