Truncate text content for a given width in Unity

This problem is often encountered in unity development, and if the content of text exceeds the given width, it is truncated and appended with "...".

Here's the code to fix the problem

    /// <summary>    ///truncates a string based on the given width.    And stitching the given suffix into the truncated string. /// </summary>    /// <param name= "text" ></param>    /// <param name= "MaxWidth" ></param>    /// <param name= "suffix" ></param>    /// <returns></returns>     Public Static stringStringellipsis (text text,intMaxWidth,stringsuffix ="...")    {        intTextleng =Gettextleng (text); if(Textleng >maxWidth) {            intSuffixleng =Gettextleng (text, suffix); returnStriplength (text, Maxwidth-suffixleng) +suffix; }        Else        {            returnText.text; }    }    /// <summary>    ///truncates a string by a specified width/// </summary>    /// <param name= "text" ></param>    /// <param name= "width" ></param>    /// <returns></returns>     Public Static stringStriplength (text text,intwidth) {        intTotallength =0; Font MyFont=Text.font;        Myfont.requestcharactersintexture (Text.text, Text.fontsize, Text.fontstyle); Characterinfo Characterinfo=NewCharacterinfo (); Char[] Chararr =Text.text.ToCharArray (); inti =0;  for(; I < chararr.length;i++) {myfont.getcharacterinfo (chararr[i], outCharacterinfo, text.fontsize); intNewlength = Totallength +characterinfo.advance; if(Newlength >width) {                if(Mathf.abs (Newlength-width) > Mathf.abs (Width-totallength)) {                     Break; }                Else{totallength=newlength;  Break; }} totallength+=characterinfo.advance; }        returnText.text.Substring (0, i); }    /// <summary>    ///gets the length of the string in text/// </summary>    /// <param name= "text" ></param>    /// <param name= "str" ></param>    /// <returns></returns>     Public Static intGettextleng (text text,stringStr=NULL) {Font Mfont=Text.font; stringMSTR =string. IsNullOrEmpty (str)?Text.text:str;        Mfont.requestcharactersintexture (MSTR, Text.fontsize, Text.fontstyle); Char[] Chararr =Mstr.tochararray (); intTotaltextleng =0; Characterinfo character=NewCharacterinfo ();  for(inti =0; i < chararr.length; i++) {mfont.getcharacterinfo (chararr[i], outcharacter, text.fontsize); Totaltextleng+=character.advance; }        returnTotaltextleng; }

Of course, this kind of method can also be written as text extension, convenient to call

 Public Static classextendtext{ Public Static voidStringellipsis ( ThisText text,intMaxWidth,stringsuffix ="...")    {        intTextleng =Gettextleng (text); if(Textleng >maxWidth) {            intSuffixleng =Gettextleng (text, suffix); Text.text= Striplength (text, Maxwidth-suffixleng) +suffix; }        Else        {            return ; }    }    /// <summary>    ///truncates a string by a specified width/// </summary>    /// <param name= "text" ></param>    /// <param name= "width" ></param>    /// <returns></returns>    Private Static stringStriplength (text text,intwidth) {        intTotallength =0; Font MyFont=Text.font;        Myfont.requestcharactersintexture (Text.text, Text.fontsize, Text.fontstyle); Characterinfo Characterinfo=NewCharacterinfo (); Char[] Chararr =Text.text.ToCharArray (); inti =0;  for(; i < chararr.length; i++) {myfont.getcharacterinfo (chararr[i], outCharacterinfo, text.fontsize); intNewlength = Totallength +characterinfo.advance; if(Newlength >width) {                if(Mathf.abs (Newlength-width) > Mathf.abs (Width-totallength)) {                     Break; }                Else{totallength=newlength;  Break; }} totallength+=characterinfo.advance; }        returnText.text.Substring (0, i); }    /// <summary>    ///gets the length of the string in text/// </summary>    /// <param name= "text" ></param>    /// <param name= "str" ></param>    /// <returns></returns>    Private Static intGettextleng (text text,stringstr =NULL) {Font Mfont=Text.font; stringMSTR =string. IsNullOrEmpty (str)?Text.text:str;        Mfont.requestcharactersintexture (MSTR, Text.fontsize, Text.fontstyle); Char[] Chararr =Mstr.tochararray (); intTotaltextleng =0; Characterinfo character=NewCharacterinfo ();  for(inti =0; i < chararr.length; i++) {mfont.getcharacterinfo (chararr[i], outcharacter, text.fontsize); Totaltextleng+=character.advance; }        returnTotaltextleng; }}

Truncate text content for a given width in Unity