Common/ImageUtil.cs

这里只显示每个文件的开头 60 行。登录后可以解锁完整代码。

微信扫码关注公众号，代码整理好后第一时间通知你。

/**********************************************
 * 类作用：   图片处理类
 * 建立人：   abaal
 * 建立时间： 2008-09-03 
 * Copyright (C) 2007-2008 abaal
 * All rights reserved
 * http://blog.csdn.net/abaal888
 ***********************************************/
using System;
using System.Drawing;
using System.Drawing.Imaging;
using System.Drawing.Drawing2D;
using System.IO;

namespace Svnhost.Common
{
    public enum ThumbnailMode { HW, W, H, Cut };
    /// <summary>
    /// 图片实用类
    /// </summary>
    public sealed class ImageUtil
    {
        private ImageUtil() { }

        public static string[] postion = new string[] { "WM_TOP_LEFT", "WM_TOP_RIGHT", "WM_TOP_MIDDLE", "WM_BOTTOM_RIGHT", "WM_BOTTOM_LEFT", "WM_BOTTOM_MIDDLE" };

        /// <summary>
        /// 生成缩略图
        /// </summary>
        /// <param name="originalImagePath">原图片路径</param>
        /// <param name="thumbnailPath">缩略图路径</param>
        /// <param name="width">宽度</param>
        /// <param name="height">高度</param>
        /// <param name="mode">生成模式</param>
        public static void MakeThumbnail(string originalImagePath, string thumbnailPath, int width, int height, ThumbnailMode mode)
        {
            System.Drawing.Image originalImage = System.Drawing.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 ThumbnailMode.HW://指定高宽缩放（可能变形）                
                    break;
                case ThumbnailMode.W://指定宽，高按比例                    
                    toheight = originalImage.Height * width / originalImage.Width;
                    break;
                case ThumbnailMode.H://指定高，宽按比例
                    towidth = originalImage.Width * height / originalImage.Height;
                    break;
                case ThumbnailMode.Cut://指定高宽裁减（不变形）                
                    if ((double)originalImage.Width / (double)originalImage.Height > (double)towidth / (double)toheight)
                    {
                        oh = originalImage.Height;