C# 实现 Word 加盖骑缝章效果

简介: C# 实现 Word 加盖骑缝章效果

实现效果

OA的自动化处理系统中,通过审批的最终节点,可能会对WORD文件加盖电子章,比如定位带有指定文字的Range周围加盖电子章,骑缝章,甚至水印图片。比如如下效果图:

范例运行环境

操作系统: Windows Server 2019 DataCenter

操作系统上安装 Office Word 2016 ,客户端使用的 Office Word 2019

.net版本: .netFramework4.7.1 或以上

开发工具:VS2019  C#

Office DCOM 配置

请参考我的文章《C# 读取Word表格到DataSet》有对Office DCOM详细配置介绍,这里不再赘述。

设计实现

创建stamp图章类

导出WORD文件可以传入多个图章类(如果需要的话),图章类主要包括实现如下设置:

1、可设置三种图片(标准的盖章图片、骑缝章图片、水印图片)

2、标准的盖章图片是否显示,不显示则可以只显示骑缝章或水印图片,这个可以模拟多次盖骑缝章的效果

3、定位盖章文字,可以设置一下 x、y的偏移量,以校准指定的模板文件,达到最佳重叠效果。

4、可设置各种章的翻转角度(可随机选取)

示例代码如下:

public class stamp
        {
            public string stampImageFilename = "";  //盖章图片
            public string stampImageFilename2 = "";  //骑缝章图片
            public string stampImageFilename3 = "";  //水印章图片
            public bool stampImageVisible = true;  //主章是否可显示
            public string findWord = "";   //查找盖章定位文字
            public int findWordOffsetX = 0; //查找盖章文字后,章的定位偏移量
            public int findWordOffsetY = 0; //查找盖章文字后,章的定位偏移量
            public int stamp2X = 0; //骑缝章偏移量
            public int stamp2Y = 0; //骑缝章偏移量
            public int roteAngle = 0; //骑缝章翻转角度,12点方向为0度,顺时针计算角度
            public bool roteReFix = false; //骑缝章翻转角度重新计算适应图片(多见于对角线)
            public bool randomRoteAngle = false; //骑缝章是否按指定角度的最大随机值提取
            public int stampImageWidth = 0; //章宽度
            public int stampImageHeight = 0; //章高度
            public string stamp2Direction = "right";  //骑缝章盖章方向 默认right ,包括 left/top/bottom
 
            public int stampAngle = 0; //骑缝章翻转角度,12点方向为0度,顺时针计算角度
            public bool randomStampAngle = false; //骑缝章是否按指定角度的最大随机值提取
 
            public int stamp3X = 0; //水印章每页X
            public int stamp3Y = 0; //水印章每页Y
            public int stamp3Angle = 0; //水印章翻转角度,12点方向为0度,顺时针计算角度
 
 
        }

电子章图片的计算与定位

可以创建多个图章类添加 ArrayList 中进行方法传递, 初始值为public ArrayList Stamps = null;

创建方法  public string setWordStamps(string _filename,ArrayList Stamps)

实现的功能大致如下:

1、主章根据提供查找的关键字,如 “盖章处:”、“盖章:”,然后添加图片重叠在文字的上方周围

2、骑缝章根据页数进行分割计算,每页分隔宽度不小于 1 像素

3、骑缝章可选择“盖”在页面的上下左右位置,如果多个位置方向都需要“盖”,则传递多个 stamp 图章类

4、章可以随机和指定旋转角度

示例代码如下:

public string setWordStamps(string _filename,ArrayList Stamps){
            Object Nothing =System.Reflection.Missing.Value;
      string _file="",_path=Path.GetDirectoryName(_filename)+"\\tempbfile\\",_ext="";
 
      _file=Path.GetFileNameWithoutExtension(_filename);
      _ext=Path.GetExtension(_filename);
      string _validfilename=Guid.NewGuid().ToString()+_ext;
      string _lastfile=_path+_validfilename;
            string _pdfFile = _path + Guid.NewGuid().ToString() + ".pdf";
 
            System.IO.File.Copy(_filename,_lastfile,true);
      if(!File.Exists(_lastfile))
      {
        return "";
      }
 
 
            //取得Word文件保存路径
            object filename=_lastfile;
      //创建一个名为WordApp的组件对象
      Word.Application WordApp=new Word.Application();
            
      //创建一个名为WordDoc的文档对象
      WordApp.DisplayAlerts=Word.WdAlertLevel.wdAlertsNone;
      Word.Document WordDoc=WordApp.Documents.Open(ref filename,ref Nothing,ref Nothing,ref Nothing,ref Nothing,ref Nothing,ref Nothing,ref Nothing,ref Nothing,ref Nothing,ref Nothing,ref Nothing,ref Nothing,ref Nothing,ref Nothing,ref Nothing);
            WordDoc.SpellingChecked = false;
            WordDoc.ShowSpellingErrors = false;
            WordDoc.ActiveWindow.View.Type = Word.WdViewType.wdNormalView;
 
//遍历stamp图章类
    foreach (stamp Stamp in Stamps)
    {
                    bool isfirst = true;
                    int iii = 0;
                    int selectStart = 0;
                    ArrayList restoreRange = new ArrayList();
                    while (true)
                    {
                        iii++;
                        bool findstamptext = false;
                        if (Stamp.findWord != "")
                        {
                            
                            WordApp.Selection.Range.Start = selectStart;
                            
                            Word.Find fnd = WordApp.Selection.Find;
                            
                            Object findText = Stamp.findWord;
                            Object matchCase = false;
                            Object matchWholeWord = Type.Missing;
                            Object matchWildcards = false;
                            Object matchSoundsLike = false;
                            Object matchAllWordForms = false;
                            Object forward = true;
                            Object wrap = Word.WdFindWrap.wdFindContinue;
                            Object format = false;
                            Object replaceWith = "";
                            Object replace = Type.Missing; ;
                            Object matchKashida = Type.Missing;
                            Object matchDiacritics = Type.Missing;
                            Object matchAlefHamza = Type.Missing;
                            Object matchControl = Type.Missing;
                            if (fnd.Execute(ref findText, ref matchCase, ref matchWholeWord, ref matchWildcards, ref matchSoundsLike, ref matchAllWordForms,
                                ref forward, ref wrap, ref format, ref replaceWith, ref replace, ref matchKashida, ref matchDiacritics, ref matchAlefHamza, ref matchControl))
                            {
                                selectStart = WordApp.Selection.Range.Start;
                                restoreRange.Add(WordApp.Selection.Range);
                                findstamptext = true;
                            }
                            else
                            {
                                findstamptext = false;
 
                            }
                        }
                        if (findstamptext == false)
                        {
                            break;
                        }
                        Word.InlineShape pic = WordApp.Selection.Range.InlineShapes.AddPicture(Stamp.stampImageFilename, false, true);
                        Word.Shape picshape = pic.ConvertToShape();
                       
                        picshape.WrapFormat.Type = Word.WdWrapType.wdWrapNone;
                        if (Stamp.stampImageWidth != 0)
                        {
                            picshape.Width = Stamp.stampImageWidth;
                        }
                        if (Stamp.stampImageHeight != 0)
                        {
                            picshape.Height = Stamp.stampImageHeight;
                        }
                        float pagewidth = 0;
                        float pageheight = 0;
                        if (findstamptext == true)
                        {
                            if (Stamp.stampAngle > 0)
                            {
                                Random rnd = new Random();
                                picshape.Rotation = Stamp.randomStampAngle == false ? Stamp.stampAngle : rnd.Next(Stamp.stampAngle);
                            }
                            pagewidth = WordApp.Selection.PageSetup.PageWidth;
                            pageheight = WordApp.Selection.PageSetup.PageHeight;
                            int ox = 0; int oy = 0; int ow = 0; int oh = 0;
                            WordApp.Windows[1].GetPoint(out ox, out oy, out ow, out oh, WordApp.Selection.Range);
 
                            WordApp.Selection.Range.Text = "";
 
                            picshape.RelativeHorizontalPosition = Word.WdRelativeHorizontalPosition.wdRelativeHorizontalPositionPage;
                            picshape.RelativeVerticalPosition = Word.WdRelativeVerticalPosition.wdRelativeVerticalPositionPage;
 
 
                            picshape.Left = (float)(ox * 0.405402299) - (picshape.Width / 2);
 
                            picshape.Top = WordApp.Selection.Range.Information[Word.WdInformation.wdVerticalPositionRelativeToPage] - (picshape.Height / 2);
                            if ((bool)WordApp.Selection.Range.Information[Word.WdInformation.wdWithInTable] == true)
                            {
                                picshape.RelativeHorizontalPosition = Word.WdRelativeHorizontalPosition.wdRelativeHorizontalPositionCharacter;
                                picshape.RelativeVerticalPosition = Word.WdRelativeVerticalPosition.wdRelativeVerticalPositionLine;
                                picshape.Left = 0;
                                picshape.Top = 0;
                            }
 
                        }
                        picshape.Left = picshape.Left + Stamp.findWordOffsetX;
                        picshape.Top = picshape.Top + Stamp.findWordOffsetY;
                        if (Stamp.stampImageVisible == false)
                        {
                            picshape.Visible = Microsoft.Office.Core.MsoTriState.msoFalse;
                        }
                        if (Stamp.stampImageFilename2 != ""&&isfirst==true)
                        {
                            int ra = Stamp.roteAngle;
                            if (ra > 0)
                            {
                                Random rnd = new Random();
                                ra = Stamp.randomRoteAngle == false ? ra : rnd.Next(ra);
                            }
 
                            Bitmap cc = (Bitmap)Image.FromFile(Stamp.stampImageFilename2);
                            Bitmap bb = Rotate(cc, -ra, Stamp.roteReFix);
WordDoc.Windows[1].Panes[1].Pages;
                            int pages2 = WordDoc.ComputeStatistics(Word.WdStatistic.wdStatisticPages, ref Nothing);
                            
                            
                            if (pages2 == 1)
                            {
                                pages2 = 0; //如果一页就不盖骑缝章
                            }
                            for (int pi = 1; pi <= pages2; pi++)
                            {
 
                                Word.Range pagerange = WordDoc.GoTo(Word.WdGoToItem.wdGoToPage, Word.WdGoToDirection.wdGoToAbsolute, pi.ToString());
                                int rx = (pi - 1) * bb.Width / pages2;
                                int ry = 0;
                                int rw = bb.Width / pages2;
                                int rh = bb.Height;
                                if (Stamp.stamp2Direction == "bottom")
                                {
                                    rx = 0;
                                    ry = (pi - 1) * bb.Height / pages2;
                                    rw = bb.Width;
                                    rh = bb.Height / pages2;
 
                                }
                                else if (Stamp.stamp2Direction == "left")
                                {
                                    rx = (pages2 - pi) * bb.Width / pages2;
                                    ry = 0;
                                    rw = bb.Width / pages2;
                                    rh = bb.Height;
 
                                }
                                else if (Stamp.stamp2Direction == "top")
                                {
                                    rx = 0;
                                    ry = (pages2 - pi) * bb.Height / pages2;
                                    rw = bb.Width;
                                    rh = bb.Height / pages2;
                                }
                                if (rw < 1 || rh < 1)
                                {
                                    continue;
                                }
 
                                Bitmap sepbitmap1 = bb.Clone(new System.Drawing.Rectangle(rx, ry, rw, rh), System.Drawing.Imaging.PixelFormat.Format32bppPArgb);
                                string temppng = "d:\\" + System.Guid.NewGuid().ToString() + ".png";
                                sepbitmap1.Save(temppng);
 
                                Word.InlineShape pic2 = pagerange.InlineShapes.AddPicture(temppng, false, true);
                                Word.Shape picshape2 = pic2.ConvertToShape();
                                picshape2.WrapFormat.Type = Word.WdWrapType.wdWrapNone;
 
                                picshape2.Width = picshape.Width / pages2;
                                picshape2.Height = picshape.Height;
                                if (Stamp.stamp2Direction == "bottom" || Stamp.stamp2Direction == "top")
                                {
                                    picshape2.Width = picshape.Width;
                                    picshape2.Height = picshape.Height / pages2;
 
                                }
                                picshape2.RelativeHorizontalPosition = Word.WdRelativeHorizontalPosition.wdRelativeHorizontalPositionPage;
                                picshape2.RelativeVerticalPosition = Word.WdRelativeVerticalPosition.wdRelativeVerticalPositionPage;
 
                                picshape2.Left = pagewidth - picshape2.Width;
                                picshape2.Top = Stamp.stamp2Y;
                                if (Stamp.stamp2Direction == "bottom")
                                {
                                    picshape2.Left = Stamp.stamp2X;
                                    picshape2.Top = pageheight - picshape2.Height;
 
                                }
                                else if (Stamp.stamp2Direction == "left")
                                {
                                    picshape2.Left = 0;
                                    picshape2.Top = Stamp.stamp2Y;
 
                                }
                                else if (Stamp.stamp2Direction == "top")
                                {
                                    picshape2.Left = Stamp.stamp2X;
                                    picshape2.Top = 0;
 
                                }
                                resultReport += string.Format("stamp2 {2} left: {0} top:{1} width:{3} height:{4}<br>", picshape2.Left, picshape2.Top,pi,picshape2.Width,picshape2.Height);
 
                                File.Delete(temppng);
                            }
                        }//stamp2
                        if (Stamp.stampImageFilename3 != ""&&isfirst==true)
                        {
                            int ra = Stamp.stamp3Angle;
 
                            if (ra > 0)
                            {
                                Random rnd = new Random();
                                ra = Stamp.randomRoteAngle == false ? ra : rnd.Next(ra);
                            }
 
                            Bitmap cc = (Bitmap)Image.FromFile(Stamp.stampImageFilename3);
                            Bitmap bb = Rotate(cc, -ra, true);
                            int pages2 = WordDoc.ComputeStatistics(Word.WdStatistic.wdStatisticPages, ref Nothing);
                            resultReport += string.Format(" PageCount3:{0}<br>", pages2);
                            for (int pi = 1; pi <= pages2; pi++)
                            {
 
                                Word.Range pagerange = WordDoc.GoTo(Word.WdGoToItem.wdGoToPage, Word.WdGoToDirection.wdGoToAbsolute, pi.ToString());
                                int rx = (pi - 1) * bb.Width / pages2;
                                rx = 0;
                                int ry = 0;
                                int rw = bb.Width;
                                int rh = bb.Height;
 
                                Bitmap sepbitmap1 = bb.Clone(new System.Drawing.Rectangle(rx, ry, rw, rh), System.Drawing.Imaging.PixelFormat.Format32bppPArgb);
                                string temppng = "d:\\" + System.Guid.NewGuid().ToString() + ".png";
 
                                Word.InlineShape pic2 = pagerange.InlineShapes.AddPicture(temppng, false, true);
                                Word.Shape picshape2 = pic2.ConvertToShape();
                                picshape2.WrapFormat.Type = Word.WdWrapType.wdWrapNone;
 
                                picshape2.Width = picshape.Width;
                                picshape2.Height = picshape.Height;
 
                                picshape2.RelativeHorizontalPosition = Word.WdRelativeHorizontalPosition.wdRelativeHorizontalPositionPage;
                                picshape2.RelativeVerticalPosition = Word.WdRelativeVerticalPosition.wdRelativeVerticalPositionPage;
 
                                picshape2.Left = Stamp.stamp3X;
                                //                       picshape2.Left = Stamp.stamp2X;
                                picshape2.Top = Stamp.stamp2Y;
 
                                File.Delete(temppng);
                            }
                        }//stamp3
                        isfirst = false;
                    }// while
                    foreach (Word.Range range in restoreRange)
                    {
                        range.Text = Stamp.findWord;
                    }
 
 
    }//foreach
 
  WordDoc.Save();
 
    WordDoc.Close(ref Nothing, ref Nothing, ref Nothing);
  //关闭WordApp组件对象
  WordApp.Quit(ref Nothing, ref Nothing, ref Nothing);
  return _lastfile;
 
}

旋转图片方法

        public Bitmap Rotate(Bitmap b, int angle,bool fix=false)
        {
            angle = angle % 360;
 
            //弧度转换
            double radian = angle * Math.PI / 180.0;
            double cos = Math.Cos(radian);
            double sin = Math.Sin(radian);
 
            //原图的宽和高
            int w = b.Width;
            int h = b.Height;
            int ow = w;
            int oh = h;
            int d = ((int)Math.Sqrt(Math.Pow(w - 0, 2) + Math.Pow(h- 0, 2))+1);
            if (fix == true)
            {
                w = d;
                h = d;
            }
 
            int W = (int)(Math.Max(Math.Abs(w * cos - h * sin), Math.Abs(w * cos + h * sin)));
            int H = (int)(Math.Max(Math.Abs(w * sin - h * cos), Math.Abs(w * sin + h * cos)));
 
            //目标位图
            Bitmap dsImage = new Bitmap(w, h);
            System.Drawing.Graphics g = System.Drawing.Graphics.FromImage(dsImage);
 
            g.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.Bilinear;
 
            g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
 
            //计算偏移量
            System.Drawing.Point Offset = new System.Drawing.Point((W - w) / 2, (H - h) / 2);
 
            //构造图像显示区域:让图像的中心与窗口的中心点一致
            System.Drawing.Rectangle rect = new System.Drawing.Rectangle(fix==false?0:(d-ow)/2, fix == false ? 0 : (d-oh)/2, ow, oh);
//            System.Drawing.Rectangle rect = new System.Drawing.Rectangle(Offset.X, Offset.Y, w, h);
 //           System.Drawing.Point center = new System.Drawing.Point(rect.X + rect.Width / 2, rect.Y + rect.Height / 2);
            System.Drawing.Point center = new System.Drawing.Point(rect.X + rect.Width / 2, rect.Y + rect.Height / 2);
            
            g.TranslateTransform(center.X, center.Y);
            g.RotateTransform(360 - angle);
 
            //恢复图像在水平和垂直方向的平移
            g.TranslateTransform(-center.X, -center.Y);
            g.DrawImage(b, rect);
 
            //重至绘图的所有变换
            g.ResetTransform();
 
            g.Save();
            g.Dispose();
            //dsImage.Save("yuancd.jpg", System.Drawing.Imaging.ImageFormat.Jpeg);
            return dsImage;
        }

总结

以上是实现设计的一些参考代码,在实际的使用中,可能还会遇到如下问题:

1、定位关键字的叠加效果不好,因此针对每一个模板文件均需要调整图片的x、y偏移量,以达到最佳效果

2、对于超多页面的文件(如几万页),骑缝的效果可能不佳,可以采取调整图片像素宽度,或拆分模板文件进行处理

示例代码仅作参考,欢迎大家评论指教!

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