/// <summary>添加图像水印</summary>
/// <param name="signImagePath">图像文件路径</param>
/// <param name="posType">要添加的地位</param>
/// <param name="signTransparency">水印不透明度（0-100，0 为完全透明，100 为完全不透明）</param>
/// <param name="size">水印占原图像的百分比，只有在水印缩放后不大于源图像时才启作用</param>
public void AddSignImage(string signImagePath, PositionType posType, int signTransparency, int size)
{
if (!Utils.FileExists(signImagePath))
{
return;
}
using (Image image = ImageParse.GetImageFromFile(signImagePath))
this.AddSignImage(image, posType, signTransparency, size);
}
/// <summary>初始化一个新 <see cref="ImageParse" /> 实例。</summary>
/// <param name="imgFile">图像文件路径</param>
public ImageParse(string imgFile) : this(ImageParse.GetImageFromFile(imgFile))
{
}