194 lines
8.0 KiB
C#
194 lines
8.0 KiB
C#
using System;
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using System.Drawing;
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using System.Drawing.Drawing2D;
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using System.Drawing.Imaging;
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using System.IO;
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using ThoughtWorks.QRCode.Codec;
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namespace WX.CRM.Common
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{
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public class QRCodeHelper
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{
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public static QRCodeEncoder.ENCODE_MODE qrCodeEncodeMode = QRCodeEncoder.ENCODE_MODE.BYTE;
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/// <summary>
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/// 大小(值越大生成的二维码图片像素越高)
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/// </summary>
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//public static int qrCodeScale = 4;
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public static int qrCodeScale = 8;
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/// <summary>
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/// 版本(注意：设置为0主要是防止编码的字符串太长时发生错误)
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/// </summary>
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public static int qrCodeVersion = 0;
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/// <summary>
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/// 错误效验、错误更正(有4个等级)
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/// </summary>
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public static QRCodeEncoder.ERROR_CORRECTION qrCodeErrorCorrect = QRCodeEncoder.ERROR_CORRECTION.M;
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/// <summary>
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/// 二维码内容编码方式
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/// </summary>
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//public static System.Text.Encoding encode = System.Text.Encoding.GetEncoding("GB2312");
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public static System.Text.Encoding encode = System.Text.Encoding.UTF8;
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public static byte[] Create(string qrCodeBody)
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{
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QRCodeEncoder qrCodeEncoder = new QRCodeEncoder();
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qrCodeEncoder.QRCodeEncodeMode = qrCodeEncodeMode;
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qrCodeEncoder.QRCodeScale = qrCodeScale;
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qrCodeEncoder.QRCodeVersion = qrCodeVersion;
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qrCodeEncoder.QRCodeErrorCorrect = qrCodeErrorCorrect;
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Image image = qrCodeEncoder.Encode(qrCodeBody, encode);
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using (MemoryStream ms = new MemoryStream())
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{
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image.Save(ms, ImageFormat.Jpeg);
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byte[] buffer = new byte[ms.Length];
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ms.Seek(0, SeekOrigin.Begin);
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ms.Read(buffer, 0, buffer.Length);
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return buffer;
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}
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}
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public static Image CreateImg(string qrCodeBody)
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{
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QRCodeEncoder qrCodeEncoder = new QRCodeEncoder();
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qrCodeEncoder.QRCodeEncodeMode = qrCodeEncodeMode;
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qrCodeEncoder.QRCodeScale = qrCodeScale;
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qrCodeEncoder.QRCodeVersion = qrCodeVersion;
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qrCodeEncoder.QRCodeErrorCorrect = qrCodeErrorCorrect;
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Image image = qrCodeEncoder.Encode(qrCodeBody, encode);
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return image;
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}
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public static byte[] GetQrCode(string name, string price, string productName, string savePath, string url, string payType)
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{
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var dicPath = Path.Combine(Path.Combine(System.Web.HttpContext.Current.Request.PhysicalApplicationPath, "UploadFile"), "PayQRCode");
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var dituPath = Path.Combine(dicPath, "ditu.png");
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var wxPath = Path.Combine(dicPath, "wx.png");
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var aliPath = Path.Combine(dicPath, "ali.png");
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using (Image imgbig = new Bitmap(dituPath))
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{
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using (Graphics g = Graphics.FromImage(imgbig))
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{
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var name_font = new Font("微软雅黑", 30, FontStyle.Bold);
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g.DrawString(name, name_font, Brushes.Black, 40, 80);
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var productName_font = new Font("微软雅黑", 40, FontStyle.Bold);
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//var productName_format = new StringFormat{ Alignment = StringAlignment.Center };
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SizeF productName_size = g.MeasureString(productName, productName_font);
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var productName_x = (imgbig.Width - productName_size.Width) / 2;
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//var productName_y = (imgbig.Width - productName_size.Height) / 2;
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var productName_y = 165;
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g.DrawString(productName, productName_font, Brushes.Orange, productName_x, productName_y);
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var price_font = new Font("微软雅黑", 40, FontStyle.Bold);
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SizeF price_size = g.MeasureString(price, price_font);
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var price_x = (imgbig.Width - price_size.Width) / 2;
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//var productName_y = (imgbig.Width - productName_size.Height) / 2;
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var price_y = 235;
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g.DrawString(price, price_font, Brushes.Black, price_x, price_y);
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//二维码
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var ssImg = string.Empty;
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if (payType == "ali")
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{
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ssImg = aliPath;
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}
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else
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{
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ssImg = wxPath;
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}
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var img = CombinImage(CreateImg(url), ssImg);
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//计算图片大小
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float w = imgbig.Width / 4;
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float pw = w / (img.Width * (float)0.45);
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float ph = w / (img.Height * (float)0.45);
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if (pw > ph)
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{
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pw = ph;
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}
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int mw = (int)(pw * img.Width);
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int mh = (int)(pw * img.Height);
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//计算图片在二维上的x,y坐标
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int x = (imgbig.Width - mw) / 2;
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int y = (imgbig.Height - mh) / 2 + 60;
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g.DrawImage(img, x, y, mw, mh);
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}
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imgbig.Save(savePath);
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using (MemoryStream ms = new MemoryStream())
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{
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imgbig.Save(ms, ImageFormat.Jpeg);
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byte[] buffer = new byte[ms.Length];
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ms.Seek(0, SeekOrigin.Begin);
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ms.Read(buffer, 0, buffer.Length);
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return buffer;
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}
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}
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}
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/// <summary>
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/// 调用此函数后使此两种图片合并，类似相册，有个
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/// 背景图，中间贴自己的目标图片
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/// </summary>
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/// <param name="imgBack">粘贴的源图片</param>
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/// <param name="destImg">粘贴的目标图片</param>
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public static Image CombinImage(Image imgBack, string destImg)
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{
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Image img = Image.FromFile(destImg); //照片图片
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if (img.Height != 65 || img.Width != 65)
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{
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img = KiResizeImage(img, 65, 65, 0);
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}
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Graphics g = Graphics.FromImage(imgBack);
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g.DrawImage(imgBack, 0, 0, imgBack.Width, imgBack.Height); //g.DrawImage(imgBack, 0, 0, 相框宽, 相框高);
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//g.FillRectangle(System.Drawing.Brushes.White, imgBack.Width / 2 - img.Width / 2 - 1, imgBack.Width / 2 - img.Width / 2 - 1,1,1);//相片四周刷一层黑色边框
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//g.DrawImage(img, 照片与相框的左边距, 照片与相框的上边距, 照片宽, 照片高);
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g.DrawImage(img, imgBack.Width / 2 - img.Width / 2, imgBack.Width / 2 - img.Width / 2, img.Width, img.Height);
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GC.Collect();
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return imgBack;
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}
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/// <summary>
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/// Resize图片
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/// </summary>
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/// <param name="bmp">原始Bitmap</param>
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/// <param name="newW">新的宽度</param>
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/// <param name="newH">新的高度</param>
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/// <param name="Mode">保留着，暂时未用</param>
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/// <returns>处理以后的图片</returns>
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public static Image KiResizeImage(Image bmp, int newW, int newH, int Mode)
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{
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try
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{
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Image b = new Bitmap(newW, newH);
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Graphics g = Graphics.FromImage(b);
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// 插值算法的质量
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g.InterpolationMode = InterpolationMode.HighQualityBicubic;
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g.DrawImage(bmp, new Rectangle(0, 0, newW, newH), new Rectangle(0, 0, bmp.Width, bmp.Height), GraphicsUnit.Pixel);
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g.Dispose();
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return b;
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}
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catch
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{
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return null;
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}
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}
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}
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}
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