发布时间：2017-09-22编辑：佚名阅读（2105）
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 | using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Text;using System.Windows.Forms;using System.IO;using System.Drawing.Text;using System.Drawing.Drawing2D;using System.Drawing.Imaging;using System.Threading;namespace FontDemo{ public partial class MarkImage : Form { //使用方法： //在软件根目录放水印图片，命名为“ddK.png” //在软件根目录下的img文件夹放要添加水印的图片 //在软件根目录下的imgbak文件夹为合成后输出文件夹 int i = 0; public MarkImage() { InitializeComponent(); } private void MarkImage_Load(object sender, EventArgs e) { } /// <summary> /// 保存图片 " 图片水印 " /// </summary> /// <param name="InUploadImagePath">原服务器图片路径</param> ///<param name="inLogoImagePath">生成的带图片水印的图片路径</param> ///<param name="InSavePath">水印图片路径</param> ///<param name="strType">原图片文件类型</param> public void MarkToImage(string InUploadImagePath, string inLogoImagePath, string InSavePath, string strType) { //FileStream fs = new FileStream(System.Windows.Forms.Application.StartupPath + @"\Img\" + InUploadImagePath, FileMode.Open, FileAccess.ReadWrite); //System.Drawing.Image img = System.Drawing.Image.FromStream(fs, false, false); //Bitmap bmp = new Bitmap(img); //img.Dispose(); //fs.Close(); //System.Drawing.Image Image = bmp; //System.Drawing.Image newimage = System.Drawing.Image.FromFile(System.Windows.Forms.Application.StartupPath + @"\" + inLogoImagePath); //Graphics g = Graphics.FromImage(Image); //g.DrawImage(newimage, new Rectangle(Image.Width - newimage.Width, Image.Height - newimage.Height, newimage.Width, newimage.Height), 0, 0, newimage.Width, newimage.Height, GraphicsUnit.Pixel); //System.Drawing.Image Image = System.Drawing.Image.FromFile(System.Windows.Forms.Application.StartupPath + @"\Img\" +InUploadImagePath); //System.Drawing.Image newimage = System.Drawing.Image.FromFile(System.Windows.Forms.Application.StartupPath + @"\" +inLogoImagePath); //Graphics g = Graphics.FromImage(Image); //g.DrawImage(newimage, new Rectangle(Image.Width - newimage.Width, Image.Height - newimage.Height, newimage.Width, newimage.Height), 0, 0, newimage.Width, newimage.Height, GraphicsUnit.Pixel); //g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality; //g.InterpolationMode = InterpolationMode.HighQualityBicubic; //g.TextRenderingHint = TextRenderingHint.AntiAliasGridFit; //Image.Save(System.Windows.Forms.Application.StartupPath + @"\ImgBak\" + InSavePath); //string pith = "C:\\Documents and Settings\\Administrator\\桌面\\临时目录\\IMg-09-07-21\\FontDemo\\FontDemo\\bin\\Debug\\ImgBak\\" + InSavePath; //Image.Save(pith); //System.Windows.Forms.Application.StartupPath = "C:\\Documents and Settings\\Administrator\\桌面\\临时目录\\IMg-09-07-21\\FontDemo\\FontDemo\\bin\\Debug" Bitmap imgTemp = new Bitmap(System.Windows.Forms.Application.StartupPath + @"\Img\" + InUploadImagePath);//创建Image对象，大小为200 * 200 Graphics gType = Graphics.FromImage(imgTemp);//在Image对象上创建Graphics对象g2 GraphicsPath typePath = new GraphicsPath(); Bitmap img = new Bitmap(System.Windows.Forms.Application.StartupPath + @"\" + inLogoImagePath);//创建Image对象，大小为200 * 200 try { //gType.DrawImage(img, 590, 1100, img.Width, img.Height); gType.DrawImage(img, new Rectangle(imgTemp.Width - img.Width, imgTemp.Height - img.Height, img.Width, img.Height), 0, 0, img.Width, img.Height, GraphicsUnit.Pixel); string ps = System.Windows.Forms.Application.StartupPath + @"\ImgBak\" + InUploadImagePath; imgTemp.Save(ps, System.Drawing.Imaging.ImageFormat.Png); } catch (Exception de) { MessageBox.Show(de.Message); } finally { //MyItem item1 = new MyItem(); //item1.id = i.ToString(); //item1.name = InUploadImagePath + " - 已生成.."; //i++; //this.listBox1.Items.Add(item1); //this.pictureBox1.Image = imgTemp; typePath.Dispose(); imgTemp.Dispose(); img.Dispose(); //newimage.Dispose(); } } private void button1_Click(object sender, EventArgs e) { this.listBox1.Items.Clear(); MethodInvoker mi = new MethodInvoker(Add); mi.BeginInvoke(null, null); } public class MyItem : object { public string name; public string id; public override string ToString() { // TODO: 添加 MyItem.ToString 实现 return name; } } public delegate void delegateMethod(string fileName, Bitmap imgTem); public void Add() { DelegateChangeButton bu = new DelegateChangeButton(ButtonEnable); this.BeginInvoke(bu, new object[] { false }); string sd = AppDomain.CurrentDomain.BaseDirectory + "Img"; string[] files = Directory.GetFiles(sd); foreach (string f in files) { if (f.LastIndexOf("\\") != -1) { string strFile = f.Substring(f.LastIndexOf("\\") + 1); string strType = strFile.Substring(strFile.Length - 3, 3); if (strType.ToLower() == "bmp" || strType.ToLower() == "png" || strType.ToLower() == "jpg") { Bitmap imgTemp = new Bitmap(System.Windows.Forms.Application.StartupPath + @"\Img\" + strFile);//创建Image对象，大小为200 * 200 Graphics gType = Graphics.FromImage(imgTemp);//在Image对象上创建Graphics对象g2 GraphicsPath typePath = new GraphicsPath(); Bitmap img = new Bitmap(System.Windows.Forms.Application.StartupPath + @"\" + "ddK.png");//创建Image对象，大小为200 * 200 if (imgTemp.Width >= 400 && imgTemp.Height >= 150) { try { ////EncoderParameter p; ////EncoderParameters ps; ////ps = new EncoderParameters(1); ////p = new EncoderParameter(System.Drawing.Imaging.Encoder.SaveFlag, (long)EncoderValue.CompressionLZW); ////ps.Param[0] = p; ////gType.DrawImage(img, new Rectangle(imgTemp.Width - img.Width, imgTemp.Height - img.Height, img.Width, img.Height), 0, 0, img.Width, img.Height, GraphicsUnit.Pixel); ////gType.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.High; ////gType.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality; ////gType.TextRenderingHint = TextRenderingHint.AntiAliasGridFit; ////string pngB = System.Windows.Forms.Application.StartupPath + @"\ImgBak\" + strFile; ////imgTemp.Save(pngB, GetCodecInfo("image/bmp"), ps); //EncoderParameter p; //EncoderParameters ps; //ps = new EncoderParameters(1); ////p = new EncoderParameter(System.Drawing.Imaging.Encoder.Compression, (long)EncoderValue.CompressionRle); //long sdd = (long)EncoderValue.CompressionRle; //p = new EncoderParameter(System.Drawing.Imaging.Encoder.Compression, (long)EncoderValue.TransformRotate270); //ps.Param[0] = p; gType.DrawImage(img, new Rectangle(imgTemp.Width - img.Width, imgTemp.Height - img.Height, img.Width, img.Height), 0, 0, img.Width, img.Height, GraphicsUnit.Pixel); //gType.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.High; //gType.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality; //gType.TextRenderingHint = TextRenderingHint.AntiAliasGridFit; string pngB = System.Windows.Forms.Application.StartupPath + @"\ImgBak\" + strFile; //imgTemp.Save(pngB, GetCodecInfo("image/jpeg"), ps); //imgTemp.Save(pngB, System.Drawing.Imaging.ImageFormat.Png); EncoderParameters encoderParams = new EncoderParameters(); long[] quality = new long[1]; quality[0] = 92; //压缩比例，决定图片大小的重要因素。 EncoderParameter encoderParam = new EncoderParameter(System.Drawing.Imaging.Encoder.Quality, quality); encoderParams.Param[0] = encoderParam; imgTemp.Save(System.Windows.Forms.Application.StartupPath + @"\ImgBak\" + strFile, GetCodecInfo("image/jpeg"), encoderParams); if (listBox1.InvokeRequired) { delegateMethod m = new delegateMethod(Referesh); this.BeginInvoke(m, new object[] { strFile, imgTemp }); } else { Referesh(strFile, imgTemp); } Thread.Sleep(100); //EncoderParameters encoderParams = new EncoderParameters(); //long[] quality = new long[1]; //quality[0] = 90; //EncoderParameter encoderParam = new EncoderParameter(System.Drawing.Imaging.Encoder.Quality, quality); //encoderParams.Param[0] = encoderParam; //Bitmap imgLast = new Bitmap(pngB);//创建Image对象 //imgLast.Save(System.Windows.Forms.Application.StartupPath + @"\images\" + strFile, GetCodecInfo("image/jpeg"), encoderParams); // SmallPic(pngB, System.Windows.Forms.Application.StartupPath + @"\images\" + strFile, imgTemp.Width, imgTemp.Height); } catch (Exception de) { MessageBox.Show(de.Message); } finally { typePath.Dispose(); //imgTemp.Dispose(); //img.Dispose(); } } } } } delegateMethodEND en = new delegateMethodEND(EndList); this.BeginInvoke(en); this.BeginInvoke(bu, new object[] { true }); } /**//// <summary> /// 保存JPG时用 /// </summary> /// <param name="mimeType"></param> /// <returns>得到指定mimeType的ImageCodecInfo</returns> private ImageCodecInfo GetCodecInfo(string mimeType) { ImageCodecInfo[] CodecInfo = ImageCodecInfo.GetImageEncoders(); foreach (ImageCodecInfo ici in CodecInfo) { if (ici.MimeType == mimeType) return ici; } return null; } public void ButtonEnable(bool flag) { this.button1.Enabled = flag; } public void Referesh(string fileName, Bitmap imgTem) { listBox1.Items.Add(DateTime.Now.ToShortTimeString() + @"分 - ImgBak\" + fileName + " 已生成"); listBox1.SelectedIndex = listBox1.Items.Count - 1; this.pictureBox1.Image = imgTem; Application.DoEvents(); } public void EndList() { listBox1.Items.Add(DateTime.Now.ToShortTimeString() + @"分 -网站所有水印图生成结束！"); listBox1.SelectedIndex = listBox1.Items.Count - 1; } public delegate void delegateMethodEND(); public delegate void DelegateChangeButton(bool flag); //public delegate void DelegateChangeIMG(Bitmap imgTem); public bool SmallPic(string strOldPic, string strNewPic, int widthEx, int heightEx) {//提供原始图片，目标路径，以及想要生成的缩略图尺寸 System.Drawing.Bitmap objPic, objNewPic; objPic = new System.Drawing.Bitmap(strOldPic); int width, height; width = objPic.Width; height = objPic.Height; if ((int)(height / heightEx) >= (int)(width / widthEx)) {//高度压缩比例大于宽度 SmallPicW(strOldPic, strNewPic, heightEx, widthEx); objPic.Dispose(); return true; } else {//高度压缩比例小于宽度 SmallPicH(strOldPic, strNewPic, widthEx, heightEx); objPic.Dispose(); return true; } } ///下面这个函数处理高度压缩比例小于宽度的情况 private void SmallPicH(string strOldPic, string strNewPic, int intWidth, int descHeight) { System.Drawing.Bitmap objPic, smallObjPic, objNewPic; objPic = null; objNewPic = null; smallObjPic = null; try { objPic = new System.Drawing.Bitmap(strOldPic); //将原始图片放入到内存里 int intHeight = (intWidth * objPic.Height) / objPic.Width; smallObjPic = new System.Drawing.Bitmap(objPic, intWidth, intHeight); objNewPic = new System.Drawing.Bitmap(intWidth, descHeight, PixelFormat.Format64bppPArgb); //在内存里生成一张跟缩略图尺寸一样的空图片。 objNewPic.SetResolution(objPic.HorizontalResolution, objPic.VerticalResolution); Graphics grPhoto = Graphics.FromImage(objNewPic); if (objPic.Width < intWidth) { grPhoto.FillRectangle(System.Drawing.Brushes.White, 0, 0, intWidth, descHeight); grPhoto.DrawImage(smallObjPic, new Rectangle((intWidth - objPic.Width) / 2, (descHeight - objPic.Height) / 2, objPic.Width, objPic.Height)); } else { grPhoto.FillRectangle(System.Drawing.Brushes.White, 0, 0, intWidth, descHeight); grPhoto.DrawImage(smallObjPic, new Rectangle(0, (descHeight - intHeight) / 2, intWidth, intHeight) , 0, 0, intWidth, intHeight, System.Drawing.GraphicsUnit.Pixel); } #region 保存图片 EncoderParameters encoderParams = new EncoderParameters(); long[] quality = new long[1]; quality[0] = 90; EncoderParameter encoderParam = new EncoderParameter(System.Drawing.Imaging.Encoder.Quality, quality); encoderParams.Param[0] = encoderParam; //获得包含对应的图片编解码程序 ImageCodecInfo[] arrayICI = ImageCodecInfo.GetImageEncoders(); ImageCodecInfo jpegICI = null; for (int x = 0; x < arrayICI.Length; x++) { if (arrayICI[x].FormatDescription.Equals("JPEG")) { jpegICI = arrayICI[x];// break; } } if (jpegICI != null) { objNewPic.Save(strNewPic, jpegICI, encoderParams); } else { objNewPic.Save(strNewPic, System.Drawing.Imaging.ImageFormat.Jpeg); } objPic.Dispose(); objPic = null; objNewPic.Dispose(); objNewPic = null; smallObjPic.Dispose(); smallObjPic = null; #endregion } catch (Exception exp) { } finally { if (objPic != null) objPic.Dispose(); if (objNewPic != null) objNewPic.Dispose(); if (smallObjPic != null) smallObjPic.Dispose(); objPic = null; objNewPic = null; smallObjPic = null; } } ///以下函数是处理高度压缩比例大于宽度的情况 private void SmallPicW(string strOldPic, string strNewPic, int intHeight, int descWidth) { System.Drawing.Bitmap objPic, smallObjPic, objNewPic; objPic = null; objNewPic = null; smallObjPic = null; try { objPic = new System.Drawing.Bitmap(strOldPic); int intWidth = (intHeight * objPic.Width) / objPic.Height; smallObjPic = new System.Drawing.Bitmap(objPic, intWidth, intHeight); objNewPic = new System.Drawing.Bitmap(descWidth, intHeight, PixelFormat.Format64bppPArgb); objNewPic.SetResolution(objPic.HorizontalResolution, objPic.VerticalResolution); Graphics grPhoto = Graphics.FromImage(objNewPic); if (objPic.Height < intHeight) {// grPhoto.FillRectangle(System.Drawing.Brushes.White, 0, 0, descWidth, intHeight); Rectangle r = new Rectangle((descWidth - objPic.Width) / 2, (intHeight - objPic.Height) / 2, intWidth, objPic.Height); grPhoto.DrawImage(smallObjPic, r); } else { grPhoto.FillRectangle(System.Drawing.Brushes.White, 0, 0, descWidth, intHeight); grPhoto.DrawImage(smallObjPic, new Rectangle((descWidth - intWidth) / 2, 0, intWidth, intHeight), 0, 0, intWidth, intHeight, System.Drawing.GraphicsUnit.Pixel); } #region EncoderParameters encoderParams = new EncoderParameters(); long[] quality = new long[1]; quality[0] = 90; EncoderParameter encoderParam = new EncoderParameter(System.Drawing.Imaging.Encoder.Quality, quality); encoderParams.Param[0] = encoderParam; // ImageCodecInfo[] arrayICI = ImageCodecInfo.GetImageEncoders(); ImageCodecInfo jpegICI = null; for (int x = 0; x < arrayICI.Length; x++) { if (arrayICI[x].FormatDescription.Equals("JPEG")) { jpegICI = arrayICI[x];// break; } } if (jpegICI != null) { objNewPic.Save(strNewPic, jpegICI, encoderParams); } else { objNewPic.Save(strNewPic, System.Drawing.Imaging.ImageFormat.Jpeg); } objPic.Dispose(); objPic = null; objNewPic.Dispose(); objNewPic = null; smallObjPic.Dispose(); smallObjPic = null; #endregion } catch (Exception exp) { throw exp; } finally { if (objPic != null) objPic.Dispose(); if (objNewPic != null) objNewPic.Dispose(); if (smallObjPic != null) smallObjPic.Dispose(); objPic = null; smallObjPic = null; objNewPic = null; } } }} |
关键字： C# 水印 图片 合成 Graphics 压缩 图像质量
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