C#中在panel上写文字并换行的方法

客官°小女子只卖身不卖艺 2022-10-03 01:50 369阅读 0赞

前段时间在优化项目时，突然想到在Panel上显示文字并换行的问题。当有一段文字需要显示并且最好是显示在Panel。于是我就动手写了下，做了一个Demo程序，现在将主要的代码贴出来，如果存在不足还希望能够帮忙提意见，以补充完善.

///  <**summary**>  
         ///  显示文本时需要用到的方法  
         ///  <**/****summary**>  
         **int** lineDistance =  5; //行间距  
        Graphics gcs;  
         **int** iHeight =  0;  
         string\[\] nrLine;  
         string\[\] nrLinePos;  
         **int** searchPos =  0;  
         **int** section =  1;  
         **int** sectionHeight =  10;  
        DispMode dm = DispMode.None;  
         **int** iPanelNotPagerHeight= 0;  
          
          
         ///  <**summary**>  
         ///  分析要显示文本的内容，将文本进行分段，分行，并测算好行距，段距等  
         ///  <**/****summary**>  
         ///  <**param** **name****=****"pl"**><**/****param**>  
         ///  <**param** **name****=****"ft"**><**/****param**>  
         ///  <**param** **name****=****"iWidth"**><**/****param**>  
         ///  <**param** **name****=****"value"**><**/****param**>  
         **private**  void  **GetTextInfo**(Panel pl,Font ft,  **int** iWidth,  string  **value**)  
        \{  
             **try**  
            \{  
                iHeight =  0;  
                 **if** ( **value** !=  "")  
                \{  
                     **if** (gcs ==  **null**)  
                    \{  
                        gcs = pl. **CreateGraphics**();  
                        SizeF sf0 = gcs. **MeasureString**( **new**  string( '测',  20), ft);  
                        searchPos = ( **int**)(iWidth \*  20 / sf0.Width);  
                         **if** (searchPos >  2) searchPos -=  2;  
                    \}  
  
                    nrLine =  **value**. **Split**( **new**  string\[ 1\] \{  "\\r\\n" \}, StringSplitOptions.RemoveEmptyEntries); //记下每一段文本的信息  
                    section = nrLine.Length;  
                    nrLinePos =  **new**  string\[section\]; //存放每行分割的Index数字  
                    SizeF sf1, sf2;  
                     string temps, tempt;  
                     string drawstring;  
                     **int** temPos; //临时Index  
                     **int** ipos; //文字Index  
                     //将每一段文字的分成句子，并记下每句的起始Idex  
                     **for** ( **int** i =  0; i < section; i++)  
                    \{  
                        ipos =  0;  
                        temPos = searchPos;  
                         **if** (searchPos >= nrLine\[i\].Length)  
                        \{  
                            ipos += nrLine\[i\].Length;  
                            nrLinePos\[i\] +=  "," + ipos. **ToString**();  
                            iHeight++;  
                             continue;  
                        \}  
                        drawstring = nrLine\[i\];  
                        nrLinePos\[i\] =  "";  
                         **while** (drawstring.Length > searchPos)  
                        \{  
                             **bool** isfind =  **false**;  
                             **for** ( **int** j = searchPos; j < drawstring.Length; j++)  
                            \{  
                                temps = drawstring. **Substring**( 0, j);  
                                tempt = drawstring. **Substring**( 0, j +  1);  
                                sf1 = gcs. **MeasureString**(temps, ft);  
                                sf2 = gcs. **MeasureString**(tempt, ft);  
                                 **if** (sf1.Width < iWidth && sf2.Width > iWidth)  
                                \{  
                                    iHeight++;  
                                    ipos += j;  
                                    nrLinePos\[i\] +=  "," + ipos. **ToString**();  
                                    isfind =  **true**;  
                                    drawstring = drawstring. **Substring**(j);  
                                     break;  
                                \}  
                            \}  
                             **if** (!isfind)  
                            \{  
                                 break;  
                            \}  
                        \}  
                        ipos += drawstring.Length;  
                        nrLinePos\[i\] +=  "," + ipos. **ToString**();  
                        iHeight++;  
                       
                    \}  
                \}  
                 **if** (dm == DispMode.None)  
                \{  
                     **if** ( **value** ==  "")  
                    \{  
                        iPanelNotPagerHeight =  0;  
                         return;  
                    \}  
                     **else**  
                    \{  
                        iPanelNotPagerHeight = iHeight \* (ft.Height + lineDistance) + (section -  1) \* (sectionHeight - lineDistance);  
                    \}  
                \}  
            \}  
             **catch**(Exception e)  
            \{  
                label1.Text=e.Message;  
                 return;  
            \}  
        \}  
         ///  <**summary**>  
         ///  根据GetTextInfo方法中测算好的信息来绘制文本，将文本显示到Panel上  
         ///  <**/****summary**>  
         ///  <**param** **name****=****"pl"**><**/****param**>  
         ///  <**param** **name****=****"text"**><**/****param**>  
         ///  <**param** **name****=****"font"**><**/****param**>  
         ///  <**param** **name****=****"solidbrushColor"**><**/****param**>  
         ///  <**param** **name****=****"iWidth"**><**/****param**>  
         **private**  void  **PaintTextOnPanel**(Panel pl, string text,Font font,Color solidbrushColor, **int** iWidth)  
        \{  
            Graphics g = pl. **CreateGraphics**();  
            String drawString = text;  
            Font drawFont = font;  
            SolidBrush drawBrush =  **new**  **SolidBrush**(solidbrushColor);  
            SizeF textSize = g. **MeasureString**(text, font); //文本的矩形区域大小     
             **int** lineCount = Convert. **ToInt16**(textSize.Width / iWidth) +  1; //计算行数     
             **int** fHeight = font.Height;  
             **int** htHeight =  0;  
             **bool** isPageStart =  **false**;   
             **float** x =  0.0F;  
            StringFormat drawFormat =  **new**  **StringFormat**();  
            lineCount = drawString.Length; //行数不超过总字符数目     
             **int** i, idx, first;  
             string subStr, tmpStr =  "", midStr =  "";  
             string\[\] idxs;  
             **int** tmpPage =  1;   
             string preLineStr =  "";  
             **for** (i =  0; i < section; i++)  
            \{  
                 **if** (i ==  10)  
                \{  
                    first =  0;  
                \}  
                first =  0;  
                subStr = nrLine\[i\];  
                 **if** (nrLinePos\[i\] !=  **null**) tmpStr = nrLinePos\[i\]. **TrimStart**( ',');  
                midStr = subStr. **Substring**(first);  
                 **if** (tmpStr !=  "")  
                \{  
                    idxs = tmpStr. **Split**( ',');  
                     **for** ( **int** j =  0; j < idxs.Length; j++)  
                    \{  
                        idx =  **int**. **Parse**(idxs\[j\]); //每句的结束Index                         
                        midStr = subStr. **Substring**(first, idx - first); //通过上句的结束Index和本句的结束Index计算本句的内容  
                         **if** (dm == DispMode.None)  
                        \{  
                             
                           g. **DrawString**(midStr, drawFont, drawBrush, x, Convert. **ToInt16**(htHeight), drawFormat);  
                        \}  
                          
                         **if** (j == idxs.Length -  1)  
                        \{  
                            htHeight += (fHeight + sectionHeight);  
                        \}  
                         **else**  
                        \{  
                            htHeight += (fHeight + lineDistance);  
                        \}  
                        first = idx; //记下本句结束的Index  
                    \}  
                \}  
            \}  
        \}  
          
          
          
          
          
         ///  <**summary**>  
         ///  显示模式，分为全显示和分页显示两种  
         ///  <**/****summary**>  
         **public**  **enum** DispMode  
        \{  
            None =  0,  
            Page =  1

调用显示Panel上文本的方法如下

private showTextOnPanel()

string txt="客服本来就是一个充满压力的工作，也许你以前没怎么挨过骂，起码挨骂还可以顶嘴，但是作为一个专业的客服专员，你就不允许在电话里表现出情绪波动，无论客户如何无理，如果语气不好，甚至爆粗，你的导师都会教你如何应付，但是前提是你一定不可以表现的不客气，否则全都是你错。这个就是客服，专业的客服！你会面对客户的质问（为什么这个你不懂？我要知道准确的解决时间），面对客户的质疑（你是不是新手啊？你确定这样做一定有效？），面对客户的威胁（再弄不好我要投诉你!你经理是谁？我要你经理接电话）。";

//指定字体

Font drawFont = **new** **Font**("Arial", 14);

//调用方法显示  
            **GetTextInfo**(panel1,drawFont,400,txt);  
            **PaintTextOnPanel**(panel1,txt,drawFont,Color.Red,400);

转载于:https://www.cnblogs.com/kevinGao/archive/2011/12/04/2279595.html