import sun.lwawt.macosx.CPlatformView; //导入依赖的package包/类
protected CGLSurfaceData(CPlatformView pView, CGLGraphicsConfig gc,
                         ColorModel cm, int type,int width, int height)
{
    this(gc, cm, type, width, height);
    this.pView = pView;
    this.graphicsConfig = gc;

    long pConfigInfo = gc.getNativeConfigInfo();
    long pPeerData = 0L;
    boolean isOpaque = true;
    if (pView != null) {
        pPeerData = pView.getAWTView();
        isOpaque = pView.isOpaque();
    }
    initOps(pConfigInfo, pPeerData, 0, 0, 0, isOpaque);
}
 

import sun.lwawt.macosx.CPlatformView; //导入依赖的package包/类
protected CGLSurfaceData(CPlatformView pView, CGLGraphicsConfig gc,
                         ColorModel cm, int type,int width, int height)
{
    this(gc, cm, type, width, height);
    this.pView = pView;
    this.graphicsConfig = gc;

    long pConfigInfo = gc.getNativeConfigInfo();
    long pPeerData = 0L;
    boolean isOpaque = true;
    if (pView != null) {
        pPeerData = pView.getAWTView();
        isOpaque = pView.isOpaque();
    }
    CGLGraphicsConfig.refPConfigInfo(pConfigInfo);
    initOps(pConfigInfo, pPeerData, 0, 0, 0, isOpaque);
}
 

import sun.lwawt.macosx.CPlatformView; //导入依赖的package包/类
/**
 * Attempts to create a OGL-based backbuffer for the given peer.  If
 * the requested configuration is not natively supported, an AWTException
 * is thrown.  Otherwise, if the backbuffer creation is successful, a
 * value of 1 is returned.
 */
@Override
public long createBackBuffer(CPlatformView pView,
                             int numBuffers, BufferCapabilities caps)
    throws AWTException
{
    if (numBuffers > 2) {
        throw new AWTException(
            "Only double or single buffering is supported");
    }
    BufferCapabilities configCaps = getBufferCapabilities();
    if (!configCaps.isPageFlipping()) {
        throw new AWTException("Page flipping is not supported");
    }
    if (caps.getFlipContents() == BufferCapabilities.FlipContents.PRIOR) {
        throw new AWTException("FlipContents.PRIOR is not supported");
    }

    // non-zero return value means backbuffer creation was successful
    // (checked in CPlatformWindow.flip(), etc.)
    return 1;
}
 

import sun.lwawt.macosx.CPlatformView; //导入依赖的package包/类
/**
 * Creates a SurfaceData object representing the back buffer of a
 * double-buffered on-screen Window.
 */
public static CGLOffScreenSurfaceData createData(CPlatformView pView,
        Image image, int type) {
    CGLGraphicsConfig gc = getGC(pView);
    Rectangle r = pView.getBounds();
    if (type == FLIP_BACKBUFFER) {
        return new CGLOffScreenSurfaceData(pView, gc, r.width, r.height,
                image, gc.getColorModel(), FLIP_BACKBUFFER);
    } else {
        return new CGLVSyncOffScreenSurfaceData(pView, gc, r.width,
                r.height, image, gc.getColorModel(), type);
    }
}
 

import sun.lwawt.macosx.CPlatformView; //导入依赖的package包/类
public static CGLGraphicsConfig getGC(CPlatformView pView) {
    if (pView != null) {
        return (CGLGraphicsConfig)pView.getGraphicsConfiguration();
    } else {
        // REMIND: this should rarely (never?) happen, but what if
        // default config is not CGL?
        GraphicsEnvironment env = GraphicsEnvironment
            .getLocalGraphicsEnvironment();
        GraphicsDevice gd = env.getDefaultScreenDevice();
        return (CGLGraphicsConfig) gd.getDefaultConfiguration();
    }
}
 

import sun.lwawt.macosx.CPlatformView; //导入依赖的package包/类
public CGLVSyncOffScreenSurfaceData(CPlatformView pView,
        CGLGraphicsConfig gc, int width, int height, Image image,
        ColorModel cm, int type) {
    super(pView, gc, width, height, image, cm, type);
    flipSurface = CGLSurfaceData.createData(pView, image,
            FLIP_BACKBUFFER);
}
 

import sun.lwawt.macosx.CPlatformView; //导入依赖的package包/类
public CGLOffScreenSurfaceData(CPlatformView pView,
                               CGLGraphicsConfig gc, int width, int height, Image image,
                               ColorModel cm, int type) {
    super(pView, gc, cm, type, width, height);
    offscreenImage = image;
    initSurface(this.width, this.height);
}