WheelView.java 文件源码

/**
 * Draws rect for current value
 * @param canvas the canvas for drawing
 */
private void drawCenterRect(Canvas canvas) {
    int center = getHeight() / 2;
    int offset = (int) (getItemHeight() / 2 * 1.2);
    centerDrawable.setBounds(0, center - offset, getWidth(), center + offset);
    centerDrawable.draw(canvas);
}