import sun.java2d.x11.X11SurfaceData; //导入依赖的package包/类
public synchronized SurfaceType getSurfaceType() {
    if (surfaceType != null) {
        return surfaceType;
    }

    surfaceType = X11SurfaceData.getSurfaceType(this, Transparency.OPAQUE);
    return surfaceType;
}
 

import sun.java2d.x11.X11SurfaceData; //导入依赖的package包/类
protected void drawGlyphList(SunGraphics2D sg2d, GlyphList gl) {
    SunToolkit.awtLock();
    try {
        X11SurfaceData x11sd = (X11SurfaceData)sg2d.surfaceData;
        Region clip = sg2d.getCompClip();
        long xgc = x11sd.getRenderGC(clip, SunGraphics2D.COMP_ISCOPY,
                                     null, sg2d.pixel);
        doDrawGlyphList(x11sd.getNativeOps(), xgc, clip, gl);
    } finally {
        SunToolkit.awtUnlock();
    }
}
 

import sun.java2d.x11.X11SurfaceData; //导入依赖的package包/类
/**
 * Creates a new SurfaceData that will be associated with the given
 * X11ComponentPeer.
 */
public SurfaceData createSurfaceData(X11ComponentPeer peer) {
    return X11SurfaceData.createData(peer);
}