图片缩放处理类，可以读取文件路径，并按指定大小缩放，如图片过大可以智能切割，并还有在底部加上标题的功能，适合在网站或者 wap 网站图片处理的时候用-Handle image scaling, you can read the file path, and with a specified size scaling, cutting, such as the image is too large can be smart, and at the bottom with the function