/// <summary>
/// Initializes a new SDUFormattedString object with given string and
/// initial CharacterFormat.<br/>
/// Format string definition is at documentation for
/// <see cref="CharacterFormat.Formatted"/> member.
/// </summary>
/// <param name="str"></param>
/// <param name="initFmt"></param>
public SDUFormattedString(string str, CharacterFormat initFmt)
{
if(sdu==null)
sdu=StringDrawUtils.GetInstance();
m_strings=new ArrayList();
m_formats=new ArrayList();
m_softbreaks=new Hashtable();
m_initialFormat=initFmt;
Debug.Assert(initFmt.Angle==0);
CharacterFormat curfmt=initFmt.ShallowCopy();
curfmt.Angle=0;
curfmt.Formatted=false;
if(!initFmt.Formatted)
{
AddFormattedPiece(str,curfmt);
}
else
{
Stack brushes=new Stack();
string curstr="";
for (int i = 0; i < str.Length; i++)
{
if(str[i]!='#')
curstr+=str[i];
else if(str[i+1]=='#')
{
curstr+='#';
i++;
}
else
{
if(curstr.Length>0)
{
AddFormattedPiece(curstr,curfmt);
curstr="";
curfmt=curfmt.ShallowCopy();
}
switch(str[i+1])
{
case 'C':
if(str.Length > i + 2 && str[i+2]=='-')
{
if(!initFmt.IgnoreColorFormatting)
{
if(brushes.Count==0)
throw new ArgumentException("Invalid format string","str");
curfmt.Brush=(Brush) brushes.Pop();
}
i+=2;
}
else if(str.Length > i + 7)
{
string colstr=str.Substring(i+2,6);
if(colstr.Length<6)
throw new ArgumentException("Invalid format string","str");
int colint;
try
{
colint=Int32.Parse(colstr,NumberStyles.HexNumber);
}
catch(FormatException)
{
throw new ArgumentException("Invalid format string","str");
}
Color clr=Color.FromArgb( (255<<24) + colint );
if(!initFmt.IgnoreColorFormatting)
{
brushes.Push(curfmt.Brush);
curfmt.Brush=new SolidBrush(clr);
}
i+=7;
}
break;
case 'B':
switch(str[i+2])
{
case '+':
curfmt.Font=new Font(curfmt.Font,curfmt.Font.Style|FontStyle.Bold);
break;
case '-':
curfmt.Font=new Font(curfmt.Font,curfmt.Font.Style & ~FontStyle.Bold);
break;
default:
throw new ArgumentException("Invalid format string","str");
}
i+=2;
break;
case 'I':
switch(str[i+2])
{
case '+':
curfmt.Font=new Font(curfmt.Font,curfmt.Font.Style|FontStyle.Italic);
break;
case '-':
curfmt.Font=new Font(curfmt.Font,curfmt.Font.Style & ~FontStyle.Italic);
break;
default:
throw new ArgumentException("Invalid format string","str");
}
i+=2;
break;
case 'U':
switch(str[i+2])
{
case '+':
curfmt.Font=new Font(curfmt.Font,curfmt.Font.Style|FontStyle.Underline);
break;
case '-':
curfmt.Font=new Font(curfmt.Font,curfmt.Font.Style & ~FontStyle.Underline);
break;
default:
throw new ArgumentException("Invalid format string","str");
}
i+=2;
break;
default:
throw new ArgumentException("Invalid format string","str");
}
}
}
if(curstr.Length>0)
AddFormattedPiece(curstr,curfmt);
}
}
/// <summary>
/// Returns instance of StringDrawUtils object.
/// </summary>
/// <returns></returns>
/// <remarks>As StringDrawUtils is a singleton, always the same instance is returned.</remarks>
public static StringDrawUtils GetInstance()
{
if (instance == null)
instance = new StringDrawUtils();
return instance;
}