CircleBackgroundMask.java 文件源码

protected void onSizeChanged(int w, int h, int oldw, int oldh) {
    float dy = ((float) h) - 2.0f;
    float dx = (float) w;
    float padding = (float) getPaddingLeft();
    this.clipPath.reset();
    this.clipPath.addCircle(dx / 2.0f, dy / 2.0f, (dx / 2.0f) - padding, Direction.CW);
    this.clipPath.close();
}