仿微信二维码生成二维码中间显示头像代码,CSharp代码库,德仔网

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【CSharp】仿微信二维码生成二维码中间显示头像
作者:石世特 / 发布于2013/4/22/ 683

	/// <summary>
	 /// 生成二维码.
	 /// </summary>
	 /// <param name="data">需要添加进去的文本</param>
	 /// <returns></returns>
	 public System.Drawing.Image GCode(String data)
	 {
	 QRCodeEncoder qrCodeEncoder = new QRCodeEncoder();
	 qrCodeEncoder.QRCodeEncodeMode = QRCodeEncoder.ENCODE_MODE.BYTE;

	
	 qrCodeEncoder.QRCodeScale = 5;
	 qrCodeEncoder.QRCodeVersion = 7;


	 qrCodeEncoder.QRCodeErrorCorrect = QRCodeEncoder.ERROR_CORRECTION.L;
	 var pbImg = qrCodeEncoder.Encode(data, System.Text.Encoding.UTF8);
	 var width = pbImg.Width / 10;
	 var dwidth = width * 2;
	 Bitmap bmp = new Bitmap(pbImg.Width + dwidth, pbImg.Height + dwidth);
	 Graphics g = Graphics.FromImage(bmp);
	 var c = System.Drawing.Color.White;
	 g.FillRectangle(new SolidBrush(c), 0, 0, pbImg.Width + dwidth, pbImg.Height + dwidth);
	 g.DrawImage(pbImg, width, width);
	 g.Dispose();
	 return bmp;
	 }

	
	 /// <summary>
	 /// 调用此函数后使此两种图片合并，类似相册，有个
	 /// 背景图，中间贴自己的目标图片
	 /// </summary>
	 /// <param name="sourceImg">粘贴的源图片</param>
	 /// <param name="destImg">粘贴的目标图片</param>
	 public static System.Drawing.Image CombinImage(System.Drawing.Image imgBack, string destImg)
	 {


	 System.Drawing.Image img = System.Drawing.Image.FromFile(destImg); //照片图片
	 if (img.Height != 50 || img.Width != 50) {
	 img = KiResizeImage(img, 50, 50, 0);
	 }
	 Graphics g = Graphics.FromImage(imgBack);

	
	 g.DrawImage(imgBack, 0, 0, imgBack.Width, imgBack.Height); //g.DrawImage(imgBack, 0, 0, 相框宽, 相框高);


	 //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

	
	 //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);


	 g.DrawImage(img, imgBack.Width / 2 - img.Width / 2, imgBack.Width / 2 - img.Width / 2 , img.Width, img.Height);
	 GC.Collect();
	 return imgBack;
	 }

	
	 /// <summary>
	 /// Resize图片
	 /// </summary>
	 /// <param name="bmp">原始Bitmap</param>
	 /// <param name="newW">新的宽度</param>
	 /// <param name="newH">新的高度</param>
	 /// <param name="Mode">保留着，暂时未用</param>
	 /// <returns>处理以后的图片</returns>
	 public static System.Drawing.Image KiResizeImage(System.Drawing.Image bmp, int newW, int newH, int Mode)
	 {
	 try
	 {
	 System.Drawing.Image b = new Bitmap(newW, newH);
	 Graphics g = Graphics.FromImage(b);
	
	 // 插值算法的质量
	 g.InterpolationMode = InterpolationMode.HighQualityBicubic;


	 g.DrawImage(bmp, new Rectangle(0, 0, newW, newH), new Rectangle(0, 0, bmp.Width, bmp.Height), GraphicsUnit.Pixel);
	 g.Dispose();

	
	 return b;
	 }
	 catch
	 {
	 return null;
	 }

	 }
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