ObliqueView.java 文件源码

@TargetApi(Build.VERSION_CODES.LOLLIPOP)
@Override
public ViewOutlineProvider getOutlineProvider() {
    shadowpath = new Path();
    if (config.getRadius() == 0) {
        shadowpath = path;
    } else {
        rect = new Rect(0, 0, (int) width, (int) height);
        RectF r = new RectF(rect);
        shadowpath.addRoundRect(r, config.getRadius(), config.getRadius(), Path.Direction.CCW);
        shadowpath.op(path, shadowpath, Path.Op.INTERSECT);
    }
    return new ViewOutlineProvider() {
        @Override
        public void getOutline(View view, Outline outline) {
            if (path.isConvex()) {
                outline.setConvexPath(shadowpath);
            }
        }
    };
}