temu客户端程序

AllBase/ImageCut.cs

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+using System;
+using System.Collections.Generic;
+using System.Drawing;
+using System.Drawing.Drawing2D;
+using System.Drawing.Imaging;
+using System.IO;
+using System.Text;
+using ZXing;
+
+namespace AllBase
+{
+    public class ImageCut
+    {
+        /// <summary>
+        /// 正方型裁剪
+        /// 以图片中心为轴心，截取正方型，然后等比缩放
+        /// 用于头像处理
+        /// </summary>
+        /// <remarks>吴剑 2010-11-23</remarks>
+        /// <param name="path">原图HttpPostedFile对象</param>
+        /// <param name="fileSaveUrl">缩略图存放地址</param>
+        /// <param name="side">指定的边长（正方型）</param>
+        /// <param name="quality">质量（范围0-100）</param>
+        public static void CutForSquare(string path, string fileSaveUrl, int side, int quality, out int width,
+            out int height)
+        {
+
+            string exe = path.Split('.')[path.Split('.').Length - 1].ToLower();
+            Image initImage = null;
+            width = 0;
+            height = 0;
+            try
+            {
+                FileStream fileStream = new FileStream(path, FileMode.Open, FileAccess.Read);
+                initImage = Image.FromStream(fileStream);
+                fileStream.Close();
+                fileStream.Dispose();
+            }
+            catch (Exception e)
+            {
+                LogSave.Add(e.Message);
+                return;
+            }
+            width = initImage.Width;
+            height = initImage.Height;
+            //原图宽高均小于模版，不作处理，直接保存
+            if (initImage.Width <= side || initImage.Height <= side)
+            {
+                return;
+                //initImage.Save(fileSaveUrl, System.Drawing.Imaging.ImageFormat.Jpeg);
+            }
+
+            //关键质量控制
+            //获取系统编码类型数组,包含了jpeg,bmp,png,gif,tiff
+            ImageCodecInfo[] icis = ImageCodecInfo.GetImageEncoders();
+            ImageCodecInfo ici = null, defCodecInfo = null;
+            foreach (ImageCodecInfo i in icis)
+            {
+                if (i.MimeType == "image/jpeg")
+                    defCodecInfo = i;
+                if ((exe == "jpg" || exe == "jpeg") && i.MimeType == "image/jpeg")
+                {
+                    ici = i;
+                }
+                if (exe == "bmp" && i.MimeType == "image/bmp")
+                {
+                    ici = i;
+                }
+                if (exe == "png" && i.MimeType == "image/png")
+                {
+                    ici = i;
+                }
+                if (exe == "gif" && i.MimeType == "image/gif")
+                {
+                    ici = i;
+                }
+            }
+            if (ici == null)
+                ici = defCodecInfo;
+            EncoderParameters ep = new EncoderParameters(1);
+            ep.Param[0] = new EncoderParameter(System.Drawing.Imaging.Encoder.Quality, (long)quality);
+
+
+            //原始图片的宽、高
+            int initWidth = initImage.Width;
+            int initHeight = initImage.Height;
+            int sizeW = 50, sizeH = 50;
+            if (initWidth > initHeight)
+                sizeW = 70;
+            else
+                sizeH = 70;
+            width = initWidth - sizeW * 2;
+            height = initHeight - sizeH * 2;
+
+            //FileBase.Delete(path);
+            Image pickedImage = new Bitmap(width, height);
+            Graphics pickedG = Graphics.FromImage(pickedImage);
+            pickedG.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.Low;
+            pickedG.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighSpeed;
+            //定位
+            Rectangle fromR = new Rectangle(sizeW - 20, sizeH, width, height);
+            Rectangle toR = new Rectangle(0, 0, width, height);
+            //画图
+            pickedG.DrawImage(initImage, toR, fromR, System.Drawing.GraphicsUnit.Pixel);
+            //将截图对象赋给原图
+            Image initImagex = (System.Drawing.Image)pickedImage.Clone();
+            //释放截图资源
+            pickedG.Dispose();
+            pickedImage.Dispose();
+            initImage.Clone();
+            initImage.Dispose();
+            try
+            {
+                initImagex.Save(fileSaveUrl, ici, ep);
+            }
+            catch (Exception e)
+            {
+                LogSave.Add(e.Message);
+            }
+            //释放关键质量控制所用资源
+            ep.Dispose();
+
+        }
+
+        /// <summary>
+        /// 是否二维码
+        /// </summary>
+        /// <param name="strSavePath"></param>
+        /// <returns></returns>
+        public static bool GetErWeiMa(string strSavePath)
+        {
+            BarcodeReader reader = new BarcodeReader();
+            FileStream fileStream = new FileStream(strSavePath, FileMode.Open, FileAccess.Read);
+            try
+            {
+                Image initImage = Image.FromStream(fileStream);
+                fileStream.Close();
+                fileStream.Dispose();
+                if (initImage.Width < 10 || initImage.Height < 10)
+                    return false;
+
+                Result result = reader.Decode((Bitmap)initImage);
+                if (result == null || string.IsNullOrEmpty(result.Text))
+                    return false;
+            }
+            catch
+            {
+                return false;
+            }
+            FileBase.Delete(strSavePath);
+            return true;
+            //return result.Text;
+        }
+
+        /// <summary>
+        /// 是否二维码
+        /// </summary>
+        /// <param name="strSavePath"></param>
+        /// <returns></returns>
+        public static bool GetErWeiMa(byte[] file, out int width, out int height)
+        {
+
+            width = 0;
+            height = 0;
+            try
+            {
+                MemoryStream ms = new MemoryStream(file);
+                Image initImage = Image.FromStream(ms);
+                ms.Close();
+                width = initImage.Width;
+                height = initImage.Height;
+                if (initImage.Width < 10 || initImage.Height < 10)
+                {
+                    initImage = null;
+                    return false;
+                }
+
+                BarcodeReader reader = new BarcodeReader();
+                Result result = reader.Decode((Bitmap)initImage);
+                if (result == null || string.IsNullOrEmpty(result.Text))
+                {
+                    reader = null;
+                    result = null;
+                    initImage = null;
+                    return false;
+                }
+                reader = null;
+                result = null;
+                initImage = null;
+            }
+            catch
+            {
+                return false;
+            }
+            return true;
+            //return result.Text;
+        }
+
+
+        /// <summary>
+        /// 正方型裁剪
+        /// 以图片中心为轴心，截取正方型，然后等比缩放
+        /// 用于头像处理
+        /// </summary>
+        /// <remarks>吴剑 2010-11-23</remarks>
+        /// <param name="postedFile">原图HttpPostedFile对象</param>
+        /// <param name="fileSaveUrl">缩略图存放地址</param>
+        /// <param name="side">指定的边长（正方型）</param>
+        /// <param name="quality">质量（范围0-100）</param>
+        public static void CutForSquare(System.IO.Stream fromFile, string fileSaveUrl, int side, int quality)
+        {
+            //创建目录
+            string dir = Path.GetDirectoryName(fileSaveUrl);
+            if (!Directory.Exists(dir))
+                Directory.CreateDirectory(dir);
+
+            //原始图片（获取原始图片创建对象，并使用流中嵌入的颜色管理信息）
+            System.Drawing.Image initImage = System.Drawing.Image.FromStream(fromFile, true);
+
+            //原图宽高均小于模版，不作处理，直接保存
+            if (initImage.Width <= side && initImage.Height <= side)
+            {
+                initImage.Save(fileSaveUrl, System.Drawing.Imaging.ImageFormat.Jpeg);
+            }
+            else
+            {
+                //原始图片的宽、高
+                int initWidth = initImage.Width;
+                int initHeight = initImage.Height;
+
+                //非正方型先裁剪为正方型
+                if (initWidth != initHeight)
+                {
+                    //截图对象
+                    System.Drawing.Image pickedImage = null;
+                    System.Drawing.Graphics pickedG = null;
+
+                    //宽大于高的横图
+                    if (initWidth > initHeight)
+                    {
+                        //对象实例化
+                        pickedImage = new System.Drawing.Bitmap(initHeight, initHeight);
+                        pickedG = System.Drawing.Graphics.FromImage(pickedImage);
+                        //设置质量
+                        pickedG.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic;
+                        pickedG.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
+                        //定位
+                        Rectangle fromR = new Rectangle((initWidth - initHeight) / 2, 0, initHeight, initHeight);
+                        Rectangle toR = new Rectangle(0, 0, initHeight, initHeight);
+                        //画图
+                        pickedG.DrawImage(initImage, toR, fromR, System.Drawing.GraphicsUnit.Pixel);
+                        //重置宽
+                        initWidth = initHeight;
+                    }
+                    //高大于宽的竖图
+                    else
+                    {
+                        //对象实例化
+                        pickedImage = new System.Drawing.Bitmap(initWidth, initWidth);
+                        pickedG = System.Drawing.Graphics.FromImage(pickedImage);
+                        //设置质量
+                        pickedG.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic;
+                        pickedG.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
+                        //定位
+                        Rectangle fromR = new Rectangle(0, (initHeight - initWidth) / 2, initWidth, initWidth);
+                        Rectangle toR = new Rectangle(0, 0, initWidth, initWidth);
+                        //画图
+                        pickedG.DrawImage(initImage, toR, fromR, System.Drawing.GraphicsUnit.Pixel);
+                        //重置高
+                        initHeight = initWidth;
+                    }
+
+                    //将截图对象赋给原图
+                    initImage = (System.Drawing.Image)pickedImage.Clone();
+                    //释放截图资源
+                    pickedG.Dispose();
+                    pickedImage.Dispose();
+                }
+
+                //缩略图对象
+                System.Drawing.Image resultImage = new System.Drawing.Bitmap(side, side);
+                System.Drawing.Graphics resultG = System.Drawing.Graphics.FromImage(resultImage);
+                //设置质量
+                resultG.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic;
+                resultG.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
+                //用指定背景色清空画布
+                resultG.Clear(Color.White);
+                //绘制缩略图
+                resultG.DrawImage(initImage, new System.Drawing.Rectangle(0, 0, side, side), new System.Drawing.Rectangle(0, 0, initWidth, initHeight), System.Drawing.GraphicsUnit.Pixel);
+
+                //关键质量控制
+                //获取系统编码类型数组,包含了jpeg,bmp,png,gif,tiff
+                ImageCodecInfo[] icis = ImageCodecInfo.GetImageEncoders();
+                ImageCodecInfo ici = null;
+                foreach (ImageCodecInfo i in icis)
+                {
+                    if (i.MimeType == "image/jpeg" || i.MimeType == "image/bmp" || i.MimeType == "image/png" || i.MimeType == "image/gif")
+                    {
+                        ici = i;
+                    }
+                }
+                EncoderParameters ep = new EncoderParameters(1);
+                ep.Param[0] = new EncoderParameter(System.Drawing.Imaging.Encoder.Quality, (long)quality);
+
+                //保存缩略图
+                resultImage.Save(fileSaveUrl, ici, ep);
+
+                //释放关键质量控制所用资源
+                ep.Dispose();
+
+                //释放缩略图资源
+                resultG.Dispose();
+                resultImage.Dispose();
+
+                //释放原始图片资源
+                initImage.Dispose();
+            }
+        }
+
+
+
+
+        /// <summary>
+        /// 判断文件类型是否为WEB格式图片
+        /// (注：JPG,GIF,BMP,PNG)
+        /// </summary>
+        /// <param name="contentType">HttpPostedFile.ContentType</param>
+        /// <returns></returns>
+        public static bool IsWebImage(string contentType)
+        {
+            if (contentType == "image/pjpeg" || contentType == "image/jpeg" || contentType == "image/gif" || contentType == "image/bmp" || contentType == "image/png")
+            {
+                return true;
+            }
+            else
+            {
+                return false;
+            }
+        }
+        /// <summary>
+        /// 压缩图片获得图片MD5 32位指纹
+        /// </summary>
+        /// <param name="imgToResize"></param>
+        /// <param name="width"></param>
+        /// <param name="height"></param>
+        /// <returns></returns>
+        public static long ResizeImage(Image imgToResize, int width, int height)
+        {
+            try
+            {
+                int sourceWidth = imgToResize.Width;
+                int sourceHeight = imgToResize.Height;
+                float nPercent = 0;
+                float nPercentW = 0;
+                float nPercentH = 0;
+                nPercentW = ((float)width / (float)sourceWidth);
+                nPercentH = ((float)height / (float)sourceHeight);
+                if (nPercentH < nPercentW)
+                    nPercent = nPercentH;
+                else
+                    nPercent = nPercentW;
+                int destWidth = (int)(sourceWidth * nPercent);
+                int destHeight = (int)(sourceHeight * nPercent);
+                Bitmap b = new Bitmap(destWidth, destHeight);
+                Graphics g = Graphics.FromImage(b);
+                g.InterpolationMode = InterpolationMode.HighQualityBicubic;
+                g.DrawImage(imgToResize, 0, 0, destWidth, destHeight);
+                g.Dispose();
+                imgToResize.Dispose();
+                long md5 = ToGray(ref b,  width,  height);
+                return md5;
+            }
+            catch (Exception e)
+            {
+                LogSave.Add("计算图片指纹失败："+e.Message);
+                return 0;
+            }
+        }
+
+        /// <summary>
+        /// 图像灰度化，并计算指纹
+        /// </summary>
+        /// <param name="bmp"></param>
+        /// <returns></returns>
+        public static long ToGray(ref Bitmap bmp, int width, int height)
+        {
+            byte[] b = new byte[width * height];
+            for (int i = 0; i < bmp.Width; i++)
+            {
+                for (int j = 0; j < bmp.Height; j++)
+                {
+                    Color color = bmp.GetPixel(i, j);
+                    int gray = (int)(color.R * 0.3 + color.G * 0.59 + color.B * 0.11);
+                    gray = gray / 16;
+                    b[i * bmp.Width + j] = (byte)gray;
+                }
+            }
+            return BaseClass.GetLong(b);
+        }
+
+        /// <summary>
+        /// 处理图片(四边裁剪+水印)
+        /// </summary>
+        /// <param name="bytesOld"></param>
+        /// <param name="sWaterMark"></param>
+        /// <returns></returns>
+        public static void HandleImage(ref byte[] bytesOld,bool flag)
+        {
+            try
+            {
+            Image img = BytesToImage(ref bytesOld);
+            int iniWidth = img.Width;
+            int iniHeight = img.Height;
+
+            Random random = new Random();
+         
+            int cutPixl = random.Next(1, 50); //左边切除的像素
+            int cutPixr = random.Next(1, 50); //右边切除的像素
+            int cutPixt = random.Next(1, 50); //顶部切除的像素
+            int cutPixb = random.Next(1, 50); //底部切除的像素
+
+            if (!flag)
+            {
+               cutPixl = 0; //左边切除的像素
+               cutPixr = 0; //右边切除的像素
+               cutPixt = 0; //顶部切除的像素
+               cutPixb = 0; //底部切除的像素
+             }
+           
+            Bitmap bitmap = CutImage(ref bytesOld, cutPixl, cutPixr, iniWidth - cutPixl - cutPixt, iniHeight - cutPixr - cutPixb);
+            if(bitmap==null)
+                return;
+            MemoryStream ms = new MemoryStream();
+            ImageCodecInfo icc = GetEncoderInfo("image/jpeg");
+            EncoderParameters ep = new EncoderParameters(1)
+            {
+                Param = { [0] = new EncoderParameter(System.Drawing.Imaging.Encoder.Quality, 75l) }
+            };
+            bitmap.Save(ms, icc, ep);
+            bytesOld = ms.ToArray();
+            }
+            catch
+            {
+            }
+        }
+
+        /// <summary>
+        /// 字节数组转换为图片
+        /// </summary>
+        /// <param name="buffer">字节数组</param>
+        /// <returns>图片</returns>
+        public static Image BytesToImage(ref byte[] buffer)
+        {
+            var ms = new MemoryStream(buffer, 0, buffer.Length);
+            return Image.FromStream(ms);
+        }
+
+        /// <summary>
+        /// 裁剪图片四边
+        /// </summary>
+        /// <param name="bytes">原始图片字节流</param>
+        /// <param name="iStartX">裁剪开始x坐标</param>
+        /// <param name="iStartY">裁剪开始y坐标</param>
+        /// <param name="iWidth">裁剪宽度</param>
+        /// <param name="iHeight">裁剪高度</param>
+        /// <returns></returns>
+        public static Bitmap CutImage(ref byte[] bytes, int iStartX, int iStartY, int iWidth, int iHeight)
+        {
+            try
+            {
+                Image image = BytesToImage(ref bytes);
+                Bitmap b = new Bitmap(image);
+                if (bytes == null) return null;
+                Bitmap bmpOut = new Bitmap(iWidth, iHeight, PixelFormat.Format24bppRgb);
+                Graphics g = Graphics.FromImage(bmpOut);
+                g.DrawImage(b, new Rectangle(0, 0, iWidth, iHeight), new Rectangle(iStartX, iStartY, iWidth, iHeight), GraphicsUnit.Pixel);
+                g.Dispose();
+                return bmpOut;
+            }
+            catch
+            {
+                return null;
+            }
+        }
+
+        public static ImageCodecInfo GetEncoderInfo(string mimeType)
+        {
+            int j;
+            ImageCodecInfo[] encoders;
+            encoders = ImageCodecInfo.GetImageEncoders();
+            for (j = 0; j < encoders.Length; ++j)
+            {
+                if (encoders[j].MimeType == mimeType)
+                    return encoders[j];
+            }
+            return null;
+        }
+    }
+}