210 lines
9.3 KiB
C#
210 lines
9.3 KiB
C#
using System.Drawing.Imaging;
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using System.Text;
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namespace FATrace.App.UniCodeToZPL
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{
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/// <summary>
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/// Unicode字符转化成对应的ZPL指令
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/// </summary>
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public class UnicodeToZPLHelper
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{
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/// <summary>
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/// 生成图片回调显示
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/// </summary>
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public static event Action<Image> OnViewImageCallBack;
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/// <summary>
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/// 未压缩算法处理
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/// Unicode字符转化成对应的ZPL指令
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/// </summary>
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/// <param name="content">文本内容</param>
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/// <param name="name">生成的图片名称，名称需要唯一</param>
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/// <param name="font">字体</param>
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/// <param name="textDirection">文字方向</param>
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/// <returns>
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/// 返回转换完未压缩的ZPL指令
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/// </returns>
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public static string UnCompressZPL(string content, string name, Font font, TextDirection textDirection)
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{
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Bitmap img = TextToBitmap(content, font, textDirection);
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if (textDirection != TextDirection.Degree0)
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{
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img = Rotate(img, (int)textDirection);
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}
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if (OnViewImageCallBack != null)
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{
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OnViewImageCallBack(img);
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}
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string imgCode = ConvertToZebraGRF(img);
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var totalBytes = ((img.Size.Width / 8 + ((img.Size.Width % 8 == 0) ? 0 : 1)) * img.Size.Height).ToString(); //图形中的总字节数
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var lineBytes = (img.Size.Width / 8 + ((img.Size.Width % 8 == 0) ? 0 : 1)).ToString(); //每行的字节数
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return string.Format("~DG{0}.GRF,{1},{2},{3}^XG{0}", name, totalBytes, lineBytes, imgCode);
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}
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/// <summary>
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/// 未压缩算法处理
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/// Unicode字符转化成对应的ZPL指令
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/// </summary>
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/// <param name="content">文本内容</param>
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/// <param name="name">生成的图片名称，名称需要唯一</param>
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/// <param name="textDirection">文字方向</param>
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/// <returns>
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/// 返回转换完未压缩的ZPL指令
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/// </returns>
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public static string UnCompressZPL(Bitmap img, string name, TextDirection textDirection)
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{
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if (textDirection != TextDirection.Degree0)
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{
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img = Rotate(img, (int)textDirection);
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}
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if (OnViewImageCallBack != null)
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{
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OnViewImageCallBack(img);
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}
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string imgCode = ConvertToZebraGRF(img);
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var totalBytes = ((img.Size.Width / 8 + ((img.Size.Width % 8 == 0) ? 0 : 1)) * img.Size.Height).ToString(); //图形中的总字节数
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var lineBytes = (img.Size.Width / 8 + ((img.Size.Width % 8 == 0) ? 0 : 1)).ToString(); //每行的字节数
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return string.Format("~DG{0}.GRF,{1},{2},{3}^XG{0}", name, totalBytes, lineBytes, imgCode);
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}
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/// <summary>
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/// 压缩算法处理
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/// Unicode字符转化成对应的ZPL指令
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/// </summary>
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/// <param name="content">文本内容</param>
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/// <param name="name">生成的图片名称，名称需要唯一</param>
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/// <param name="font">字体</param>
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/// <param name="textDirection">文字方向</param>
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/// <returns>
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/// 返回转换完压缩的ZPL指令
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/// </returns>
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public static string CompressZPL(string content, string name, Font font, TextDirection textDirection)
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{
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Bitmap img = TextToBitmap(content, font, textDirection);
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if (textDirection != TextDirection.Degree0)
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{
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img = Rotate(img, (int)textDirection);
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}
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if (OnViewImageCallBack != null)
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{
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OnViewImageCallBack(img);
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}
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string imgCode = ConvertToZebraGRF(img);
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imgCode = ZebraCompress.ZebraCompressCode(imgCode);
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var totalBytes = ((img.Size.Width / 8 + ((img.Size.Width % 8 == 0) ? 0 : 1)) * img.Size.Height).ToString(); //图形中的总字节数
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var lineBytes = (img.Size.Width / 8 + ((img.Size.Width % 8 == 0) ? 0 : 1)).ToString(); //每行的字节数
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return string.Format("~DG{0}.GRF,{1},{2},{3}^XG{0}", name, totalBytes, lineBytes, imgCode);
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}
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/// <summary>
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/// 把文字转换才Bitmap
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/// </summary>
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/// <param name="text"></param>
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/// <param name="font"></param>
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/// <returns></returns>
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private static Bitmap TextToBitmap(string text, Font font, TextDirection textDirection)
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{
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StringFormat format = new StringFormat(StringFormatFlags.NoClip);
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Bitmap bitmap = new Bitmap(1, 1);
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Graphics graphics = Graphics.FromImage(bitmap);
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SizeF sizef = graphics.MeasureString(text, font, PointF.Empty, format);
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int width = (int)(sizef.Width + 1);
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int height = (int)(sizef.Height + 1);
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Rectangle rect = new Rectangle(0, 0, width, height);
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bitmap.Dispose();
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bitmap = new Bitmap(width, height);
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graphics = Graphics.FromImage(bitmap);
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graphics.TextRenderingHint = System.Drawing.Text.TextRenderingHint.ClearTypeGridFit;//使用ClearType字体功能
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graphics.FillRectangle(new SolidBrush(Color.White), rect);
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graphics.DrawString(text, font, Brushes.Black, rect, format);
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return bitmap;
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}
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/// <summary>
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/// 以逆时针为方向对图像进行旋转
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/// </summary>
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/// <param name="b">位图流</param>
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/// <param name="angle">旋转角度[0,360](前台给的)</param>
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/// <returns></returns>
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private static Bitmap Rotate(Bitmap b, int angle)
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{
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angle = angle % 360;
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//弧度转换
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double radian = angle * Math.PI / 180.0;
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double cos = Math.Cos(radian);
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double sin = Math.Sin(radian);
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//原图的宽和高
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int w = b.Width;
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int h = b.Height;
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int W = (int)(Math.Max(Math.Abs(w * cos - h * sin), Math.Abs(w * cos + h * sin)));
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int H = (int)(Math.Max(Math.Abs(w * sin - h * cos), Math.Abs(w * sin + h * cos)));
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//目标位图
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Bitmap dsImage = new Bitmap(W, H);
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System.Drawing.Graphics g = System.Drawing.Graphics.FromImage(dsImage);
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g.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.Bilinear;
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g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
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//计算偏移量
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Point Offset = new Point((W - w) / 2, (H - h) / 2);
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//构造图像显示区域：让图像的中心与窗口的中心点一致
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Rectangle rect = new Rectangle(Offset.X, Offset.Y, w, h);
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Point center = new Point(rect.X + rect.Width / 2, rect.Y + rect.Height / 2);
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g.TranslateTransform(center.X, center.Y);
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g.RotateTransform(360 - angle);
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//恢复图像在水平和垂直方向的平移
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g.TranslateTransform(-center.X, -center.Y);
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g.DrawImage(b, rect);
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//重至绘图的所有变换
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g.ResetTransform();
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g.Save();
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g.Dispose();
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return dsImage;
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}
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/// <summary>
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/// 将BitMap图片转化成对应的灰度图片
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/// 取灰度分界中间值，作为黑白像素点的判断，187数值比较合适
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/// </summary>
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/// <param name="bitMap"></param>
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/// <returns></returns>
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private static unsafe string ConvertToZebraGRF(Bitmap bitMap)
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{
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System.Text.StringBuilder builder = new StringBuilder();
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BitmapData data = bitMap.LockBits(new Rectangle(0, 0, bitMap.Width, bitMap.Height), ImageLockMode.ReadOnly,
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PixelFormat.Format24bppRgb);
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var bp = (byte*)data.Scan0.ToPointer();
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for (int i = 0; i < data.Height; i++)
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{
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int count = 0;
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int tempData = 0;
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for (int j = 0; j < data.Width; j++)
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{
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float gray = 0.11F * bp[i * data.Stride + j * 3] + 0.59F * bp[i * data.Stride + j * 3 + 1] +
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0.3F * bp[i * data.Stride + j * 3 + 2];
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tempData = tempData * 2;
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if (gray < 187)
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{
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tempData++;
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}
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count++;
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if (j == (data.Width - 1))
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{
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if (count < 8)
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{
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tempData = tempData * (2 ^ (8 - (int)count));
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string temp = tempData.ToString("X").PadLeft(2, '0');
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builder.Append(temp);
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tempData = 0;
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count = 0;
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}
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}
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if (count >= 8)
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{
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string temp = tempData.ToString("X").PadLeft(2, '0');
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builder.Append(temp);
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tempData = 0;
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count = 0;
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}
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}
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}
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bitMap.UnlockBits(data);
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return builder.ToString();
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}
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}
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}
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