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转移.net core 3.1，为.NET 5做准备

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2020-10-22 14:59:36 +08:00
parent fd9bca23a7
commit a35d596237
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Infrastructure/Helpers/ImgHelper.cs Normal file
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// <copyright file="ImgHelper.cs" company="openauth.me">
// Copyright (c) 2019 openauth.me. All rights reserved.
// </copyright>
// <author>www.cnblogs.com/yubaolee</author>
// <date>2019-03-07</date>
// <summary>生成缩略图</summary>
namespace Infrastructure.Helpers
{
public class ImgHelper
{
//MakeThumbnail(path, tpath, 120, 90, "H");
public static void MakeThumbnail(string originalImagePath,
string thumbnailPath,
int width=120, int height=90, string mode="H")
{
//Image originalImage = Image.FromFile(originalImagePath);
//int towidth = width;
//int toheight = height;
//int x = 0;
//int y = 0;
//int ow = originalImage.Width;
//int oh = originalImage.Height;
//switch (mode)
//{
// case "HW"://指定高宽缩放（可能变形）
// break;
// case "W"://指定宽，高按比例
// toheight = originalImage.Height * width / originalImage.Width;
// break;
// case "H"://指定高，宽按比例
// towidth = originalImage.Width * height / originalImage.Height;
// break;
// case "Cut"://指定高宽裁减（不变形）
// if ((double)originalImage.Width / (double)originalImage.Height > (double)towidth / (double)toheight)
// {
// oh = originalImage.Height;
// ow = originalImage.Height * towidth / toheight;
// y = 0;
// x = (originalImage.Width - ow) / 2;
// }
// else
// {
// ow = originalImage.Width;
// oh = originalImage.Width * height / towidth;
// x = 0;
// y = (originalImage.Height - oh) / 2;
// }
// break;
// default:
// break;
//}
//MediaTypeNames.Image bitmap = new System.Drawing.Bitmap(towidth, toheight);
//Graphics g = System.Drawing.Graphics.FromImage(bitmap);
//g.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.High;
//g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
//g.Clear(Color.Transparent);
//g.DrawImage(originalImage, new Rectangle(0, 0, towidth, toheight),
// new Rectangle(x, y, ow, oh),
// GraphicsUnit.Pixel);
//try
//{
// bitmap.Save(thumbnailPath, System.Drawing.Imaging.ImageFormat.Png);
//}
//catch (System.Exception e)
//{
// throw e;
//}
//finally
//{
// originalImage.Dispose();
// bitmap.Dispose();
// g.Dispose();
//}
}
}
}