批量修改图片以及加水印
好久木有來寫點什么了.. 前段時間挺忙的.??
今天上來分享一個,這幾天我給商城圖片加水印的代碼吧.因為產品編輯那邊是先把圖片都上傳完成了,所以只能做批量修改圖片來完成給所有圖片加水印的效果. 類似DX、京東效果.
現在正在開發的B2C項目商城: www.oxozoom.com? 也希望更多能關注下.
效果如下:
public void plAddSY(object sender, EventArgs e)
??????? {
??????????? //C#遍歷指定文件夾中的所有文件
??????????? DirectoryInfo TheFolder = new DirectoryInfo(Request.PhysicalApplicationPath + "images\\Product");
??????????? //DirectoryInfo TheFolder = new DirectoryInfo("D:\\WebFiles\\Newb2c\\images\\Product");
??????????? //遍歷文件夾
??????????? foreach (DirectoryInfo NextFolderfirst in TheFolder.GetDirectories())
??????????? {
??????????????? foreach (DirectoryInfo NextFolder in NextFolderfirst.GetDirectories())
??????????????? {
??????????????????? if (NextFolder.Name == "-2" || NextFolder.Name == "-1" || NextFolder.Name == "0" || NextFolder.Name == "1" || NextFolder.Name == "2" || NextFolder.Name == "3" || NextFolder.Name == "IsBoolImg")
??????????????????? {
??????????????????????? //遍歷文件
??????????????????????? foreach (FileInfo NextFile in NextFolder.GetFiles())
??????????????????????? {
??????????????????????????? if (NextFile.Name.Contains("SY800SY"))
??????????????????????????? {
??????????????????????????????? File.Delete(NextFile.FullName);
??????????????????????????? }
??????????????????????????? else if (!NextFile.Name.Contains("SY.") && !NextFile.Name.Contains("SY800."))
??????????????????????????? {
??????????????????????????????? if (!NextFile.Name.Contains("47-47_")&&!NextFile.Name.Contains("50-50_")&&!NextFile.Name.Contains("80-80_")&&!NextFile.Name.Contains("100-100_")&&!NextFile.Name.Contains("120-120_")&&!NextFile.Name.Contains("140-140_")&&!NextFile.Name.Contains("160-160_")&&!NextFile.Name.Contains("380-380_"))
??????????????????????????????? {
??????????????????????????????????? MarkWater(NextFile.FullName, Request.PhysicalApplicationPath + "images\\" + "logo-back.png");
??????????????????????????????????? //MarkWater(NextFile.FullName, "D:\\WebFiles\\Newb2c\\images\\" + "logo-back.png");
??????????????????????????????? }
??????????????????????????? }
??????????????????????? }
??????????????????? }
??????????????? }
??????????? }
??????? }
??????? /// <summary>? ?
??????? /// 給圖片上水印? ?
??????? /// </summary>? ?
??????? /// <param name="filePath">原圖片地址</param>? ?
??????? /// <param name="waterFile">水印圖片地址</param>? ?
??????? public void MarkWater(string filePath, string waterFile)
??????? {
??????????? int i = filePath.LastIndexOf(".");
??????????? string ex = filePath.Substring(i, filePath.Length - i);
??????????? if (string.Compare(ex, ".gif", true) == 0)
??????????? {
??????????????? return;
??????????? }
??????????? int newp = filePath.LastIndexOf(".");
??????????? string newpo = filePath.Substring(0, newp);
??????????? string newpolast = filePath.Substring(newp + 1);
??????????? string newlastimg = newpo + "SY800" + "." + newpolast;
??????????? BitmapHelper.MakeThumbnail(filePath, newlastimg, 800, 800, "DB", "JPG");
??????????? string ModifyImagePath = newlastimg;
??????????? int lucencyPercent = 25;
??????????? System.Drawing.Image modifyImage = null;
??????????? System.Drawing.Image drawedImage = null;
??????????? Graphics g = null;
??????????? try
??????????? {
??????????????? modifyImage = System.Drawing.Image.FromFile(ModifyImagePath, true);
??????????????? drawedImage = System.Drawing.Image.FromFile(waterFile, true);
??????????????? g = Graphics.FromImage(modifyImage);
??????????????? int x = (modifyImage.Width - drawedImage.Width)/2;
??????????????? int y = (modifyImage.Height - drawedImage.Height)/2;
??????????????? float[][] matrixItems ={? ?
??????????????? new float[] {1, 0, 0, 0, 0},? ?
??????????????? new float[] {0, 1, 0, 0, 0},? ?
??????????????? new float[] {0, 0, 1, 0, 0},? ?
??????????????? new float[] {0, 0, 0, (float)lucencyPercent/100f, 0},? ?
??????????????? new float[] {0, 0, 0, 0, 1}};
??????????????? ColorMatrix colorMatrix = new ColorMatrix(matrixItems);
??????????????? ImageAttributes imgAttr = new ImageAttributes();
??????????????? imgAttr.SetColorMatrix(colorMatrix, ColorMatrixFlag.Default, ColorAdjustType.Bitmap);
??????????????? g.DrawImage(drawedImage, new Rectangle(x, y, drawedImage.Width, drawedImage.Height), 10, 10, drawedImage.Width, drawedImage.Height, GraphicsUnit.Pixel, imgAttr);
??????????????? string[] allowImageType = { ".jpg", ".gif", ".png", ".bmp", ".tiff", ".wmf", ".ico" };
??????????????? FileInfo fi = new FileInfo(ModifyImagePath);
??????????????? ImageFormat imageType = ImageFormat.Gif;
??????????????? switch (fi.Extension.ToLower())
??????????????? {
??????????????????? case ".jpg": imageType = ImageFormat.Jpeg; break;
??????????????????? case ".gif": imageType = ImageFormat.Gif; break;
??????????????????? case ".png": imageType = ImageFormat.Png; break;
??????????????????? case ".bmp": imageType = ImageFormat.Bmp; break;
??????????????????? case ".tif": imageType = ImageFormat.Tiff; break;
??????????????????? case ".wmf": imageType = ImageFormat.Wmf; break;
??????????????????? case ".ico": imageType = ImageFormat.Icon; break;
??????????????????? default: break;
??????????????? }
??????????????? MemoryStream ms = new MemoryStream();
??????????????? modifyImage.Save(ms, imageType);
??????????????? byte[] imgData = ms.ToArray();
??????????????? modifyImage.Dispose();
??????????????? drawedImage.Dispose();
??????????????? g.Dispose();
??????????????? FileStream fs = null;
??????????????? fs = new FileStream(ModifyImagePath.Replace("SY800.", "SY."), FileMode.Create, FileAccess.Write);
??????????????? if (fs != null)
??????????????? {
??????????????????? fs.Write(imgData, 0, imgData.Length);
??????????????????? fs.Close();
??????????????? }
??????????? }
??????????? finally
??????????? {
??????????????? try
??????????????? {
??????????????????? drawedImage.Dispose();
??????????????????? modifyImage.Dispose();
??????????????????? g.Dispose();
??????????????? }
??????????????? catch
??????????????? {
??????????????? }
??????????? }
??????? }
?
?
public class BitmapHelper
??? {
??????? /// <summary>
??????? /// 生成縮略圖
??????? /// </summary>
??????? /// <param name="originalImagePath">源圖路徑（物理路徑）</param>
??????? /// <param name="thumbnailPath">縮略圖路徑（物理路徑）</param>
??????? /// <param name="width">縮略圖寬度</param>
??????? /// <param name="height">縮略圖高度</param>
??????? /// <param name="mode">生成縮略圖的方式</param>
??????? /// <param name="type">縮略圖的圖片類型</param>
??????? public static void MakeThumbnail(string originalImagePath, string thumbnailPath, int width, int height, string mode, string type)
??????? {
??????????? 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"://指定高寬縮放（可能變形）
??????????????????? break;
??????????????? case "W"://指定寬，高按比例
??????????????????? toheight = originalImage.Height * width / originalImage.Width;
??????????????????? break;
??????????????? case "H"://指定高，寬按比例
??????????????????? towidth = originalImage.Width * height / originalImage.Height;
??????????????????? break;
??????????????? case "Cut"://指定高寬裁減（不變形）
??????????????????? 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;
??????????????? case "DB"://等比縮放（不變形，如果高大按高，寬大按寬縮放）
??????????????????? if ((double)originalImage.Width / (double)towidth < (double)originalImage.Height / (double)toheight)
??????????????????? {
??????????????????????? toheight = height;
??????????????????????? towidth = originalImage.Width * height / originalImage.Height;
??????????????????? }
??????????????????? else
??????????????????? {
??????????????????????? towidth = width;
??????????????????????? toheight = originalImage.Height * width / originalImage.Width;
??????????????????? }
??????????????????? break;
??????????????? default:
??????????????????? break;
??????????? }
??????????? //新建一個bmp圖片
??????????? Image bitmap = new Bitmap(towidth, toheight);
??????????? //新建一個畫板
??????????? Graphics g = Graphics.FromImage(bitmap);
??????????? //設置高質量插值法
??????????? g.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.High;
??????????? //設置高質量,低速度呈現平滑程度
??????????? g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
??????????? //清空畫布并以透明背景色填充
??????????? g.Clear(Color.Transparent);
??????????? //在指定位置并且按指定大小繪制原圖片的指定部分
??????????? g.DrawImage(originalImage, new Rectangle(0, 0, towidth, toheight),
??????????? new Rectangle(x, y, ow, oh),
??????????? GraphicsUnit.Pixel);
??????????? try
??????????? {
??????????????? //保存縮略圖
??????????????? if (type.ToUpper() == "JPG")
??????????????? {
??????????????????? bitmap.Save(thumbnailPath, System.Drawing.Imaging.ImageFormat.Jpeg);
??????????????? }
??????????????? if (type.ToUpper() == "BMP")
??????????????? {
??????????????????? bitmap.Save(thumbnailPath, System.Drawing.Imaging.ImageFormat.Bmp);
??????????????? }
??????????????? if (type.ToUpper() == "GIF")
??????????????? {
??????????????????? bitmap.Save(thumbnailPath, System.Drawing.Imaging.ImageFormat.Gif);
??????????????? }
??????????????? if (type.ToUpper() == "PNG")
??????????????? {
??????????????????? bitmap.Save(thumbnailPath, System.Drawing.Imaging.ImageFormat.Png);
??????????????? }
??????????? }
??????????? catch (System.Exception e)
??????????? {
??????????????? throw e;
??????????? }
??????????? finally
??????????? {
??????????????? originalImage.Dispose();
??????????????? bitmap.Dispose();
??????????????? g.Dispose();
??????????? }
??????? }}
今天平安夜.一年又是一年,去年10月14號跟女友分手到現在,已經1年多了 .2013,我的本命年.也是不無心再談感情的一年.這一年收獲很多,明白了太多太多.
那在即將到來的2014,我會開始下一段感情. 希望我會幸福..? 一直堅信自信是一個人自強、自立的根本,也許過去我會有不自信,會迷茫,但是現在不會了.我很清楚我要什么.我所期待的東西得不到,我可以等.但是我覺得不會再勉強. 2012.10.14-2013.12.24 這1年多的時間我覺得是我這輩子最寶貴的財富!!?? 一個懂得愛自己的人,才會知道如何去愛別人.一個太過依賴對方的人,不經歷一個失敗,永遠都不會長大。 用一年的時間來沉淀、埋藏三年的感情,很有必要. bye ~ ? 在這里謝謝我的前女友. 謝謝！！ 最后一次祝你幸福~?
轉載于:https://www.cnblogs.com/xiong-QQ357253950/p/3489012.html
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