QRCodeHelper QR code generation, qrcodehelper

QRCodeHelper QR code generation, qrcodehelper

QRCodeHelper QR code generation

1 using System; 2 using System. drawing; 3 using ThoughtWorks. QRCode. codec; 4 using System. IO; 5 using System. text; 6 using System. drawing. drawing2D; 7 using System. web; 8 9 namespace APP. qrCodes 10 {11 public class QRCodeHelper 12 {13 public enum ImgEnum 14 {15 JPG 16} 17 18 public static string GetImgType (ImgEnum jpg) 19 {20 string ext = string. empty; 21 switch (jpg) 22 {23 case ImgEnum. JPG: 24 ext = ". jpg "; 25 break; 26 default: 27 break; 28} 29 return ext; 30} 31 // <summary> 32 // generate a QR code image 33 // </summary> 34 // <param name = "codeNumber"> string </param> 35 /// <param name = "size"> size </param> 36 /// <returns> QR code image </returns> 37 public Bitmap Create_ImgCode (string codeNumber, int size) 38 {39 // create a QR code generation class 40 QRCodeEncoder qrCodeEncoder = new QRCodeEncoder (); 41 // set the encoding mode 42 qrCo DeEncoder. QRCodeEncodeMode = QRCodeEncoder. ENCODE_MODE.BYTE; 43 // sets the encoding measurement level 44 qrCodeEncoder. QRCodeScale = size; 45 // set the encoding version 46 qrCodeEncoder. QRCodeVersion = 0; 47 // set the Encoding Error to correct 48 qrCodeEncoder. QRCodeErrorCorrect = QRCodeEncoder. ERROR_CORRECTION.M; 49 // generate a QR code image 50 System. drawing. bitmap image = qrCodeEncoder. encode (codeNumber, Encoding. UTF8); 51 52 return image; 53} 54 55 public static string CreateLo GQrCode (string strContent) 56 {57 QRCodeEncoder qrCodeEncoder = new QRCodeEncoder (); 58 qrCodeEncoder. QRCodeEncodeMode = QRCodeEncoder. ENCODE_MODE.BYTE; 59 qrCodeEncoder. QRCodeScale = 5; 60 qrCodeEncoder. QRCodeVersion = 8; 61 qrCodeEncoder. QRCodeErrorCorrect = QRCodeEncoder. ERROR_CORRECTION.M; 62 System. drawing. image image = qrCodeEncoder. encode (strContent, Encoding. UTF8); // generate a QR code image 63 64 System. I O. memoryStream MStream = new System. IO. memoryStream (); 65 image. save (MStream, System. drawing. imaging. imageFormat. png); 66 67 System. IO. memoryStream MStream1 = new System. IO. memoryStream (); 68 CombinImage (image, HttpRuntime. appDomainAppPath + "QrCodes/logo.png "). save (MStream1, System. drawing. imaging. imageFormat. png); 69 70 string reStr = Convert. toBase64String (MStream1.ToArray (); 71 // image. dispose (); 72 MStream. dispose (); 73 MStream1.Dispose (); 74 return reStr; 75} 76 77 public string SaveImg (Bitmap bmp, string path) 78 {79 bmp. save (path); 80 return path; 81} 82 83 // <summary> 84 // Save the image 85 // </summary> 86 // <param name = "bmp"> source </param> 87 // <param name = "path"> path </param> 88 // <param name = "jpg"> Format </param> 89 // <returns> </returns> 90 public bool SaveImg (Bitmap bmp, string path, ImgEnum jpg) 91 {92 try 93 {94 bmp. save (path); 95 return true; 96} 97 catch 98 {99 return false; 100} 101} 102 103 // <summary> 104 // Save the image 105 // </summary> 106 // <param name = "bmp"> source </param> 107 /// <param name = "path"> path </param> 108 // <param name = "path"> file name </param> 109 // /<returns> </returns> 110 public bool SaveImg (Bitmap bmp, string path, string fileName) 111 {112 try113 {114 bmp. save (path + fi LeName); 115 return true; 116} 117 catch118 {119 return false; 120} 121} 122 123 // <summary> 124 // Save the image 125 // </summary> 126 // <param name = "bmp"> source </param> 127 /// <param name = "path"> path </param> 128 // <param name = "path"> file name </param> 129 // /<param name = "jpg"> Format </param> 130 // <returns> </returns> 131 public bool SaveImg (Bitmap bmp, string path, string fileName, ImgEnum jpg) 132 {133 try134 {135 var ext = GetImgType (jpg); 136 bmp. save (path + fileName + ext); 137 return true; 138} 139 catch140 {141 return false; 142} 143} 144 145 // <summary> 146 // Bitmap converts base64 encoding 147 /// </summary> 148 // <param name = "bmp"> </param> 149 // <returns> </returns> 150 public string GetBase64String (Bitmap bmp) 151 {152 MemoryStream MS = new MemoryStream (); 153 bmp. save (MS, System. drawing. imaging. imageFormat. jpeg); 154 byte [] Arr = new byte [ms. length]; 155 ms. position = 0; 156 ms. read (arr, 0, (int) ms. length); 157 ms. close (); 158 string pic = Convert. toBase64String (arr); 159 return pic; 160} 161 162 // <summary> 163 // get the stream 164 // </summary> 165 // <param name = "bmp"> </param> 166 /// <returns> </returns> 167 public Stream GetStream (Bitmap bmp) 168 {169 MemoryStream MS = new MemoryStream (); 170 bmp. save (MS, System. drawing. imaging. im AgeFormat. jpeg); 171 byte [] arr = new byte [ms. length]; 172 ms. position = 0; 173 ms. read (arr, 0, (int) ms. length); 174 ms. close (); 175 return MS; 176} 177 178 179 // <summary> 180 // call this function to merge the two images, similar to album, has a 181 // background image, paste your target image in the middle 182 /// </summary> 183 /// <param name = "imgBack"> pasted source image </param> 184 /// <param name = "destImg"> pasted target Image </param> 185 // <summary> 186 public static Image CombinImage (Image imgBack, String destImg) 187 {188 Image img = Image. FromFile (destImg); // picture 189 if (img. Height! = 65 | img. Width! = 65) 190 {191 img = KiResizeImage (img, 65, 65, 0); 192} 193 Graphics g = Graphics. fromImage (imgBack); 194 195 GB. drawImage (imgBack, 0, 0, imgBack. width, imgBack. height); // g. drawImage (imgBack, 0, 0, width, height); 196 197 // g. fillRectangle (System. drawing. brushes. white, imgBack. width/2-img. width/2-1, imgBack. width/2-img. width/2-198, 1); // brush a black border around the photo 199 // g. drawImage (img, left margin of the photo and photo frame, top margin of the photo and photo frame, photo width, photo height); 200 201 GB. drawImage (img, imgBack. width/2-img. width/2, imgBack. width/2-img. width/2, img. width, img. height); 202 GC. collect (); 203 return imgBack; 204} 205 206 // <summary> 207 // Resize image 208 // </summary> 209 // <param name = "bmp"> original Bitmap </ param> 210 /// <param name = "newW"> New width </param> 211 /// <param name = "newH"> new height </param> 212 /// <param name = "Mode"> reserved, currently, images not processed using </param> 213 // <returns> </returns> 214 public static Image KiResizeImage (Image bmp, int newW, int newH, int Mode) 215 {216 try217 {218 Image B = new Bitmap (newW, newH); 219 Graphics g = Graphics. fromImage (B); 220 // The quality of the interpolation algorithm is 221 GB. interpolationMode = InterpolationMode. highQualityBicubic; 222g. drawImage (bmp, new Rectangle (0, 0, newW, newH), new Rectangle (0, 0, bmp. width, bmp. height), GraphicsUnit. pixel), 223 GB. dispose (); 224 return B; 225} 226 catch227 {228 return null; 229} 230} 231} 232}View Code