SunGraphics2D.java 文件源码

public void drawImage(BufferedImage bImg,
                      BufferedImageOp op,
                      int x,
                      int y)  {

    if (bImg == null) {
        return;
    }

    try {
        imagepipe.transformImage(this, bImg, op, x, y);
    } catch (InvalidPipeException e) {
        try {
            revalidateAll();
            imagepipe.transformImage(this, bImg, op, x, y);
        } catch (InvalidPipeException e2) {
            // Still catching the exception; we are not yet ready to
            // validate the surfaceData correctly.  Fail for now and
            // try again next time around.
        }
    } finally {
        surfaceData.markDirty();
    }
}