/// <summary>
/// Applies a font to the specified Chars of a string.
/// </summary>
/// <param name="startIndex">The start index to apply the font to (inclusive).</param>
/// <param name="endIndex">The end index to apply the font to (exclusive).</param>
/// <param name="fontIndex">The font to use.</param>
public void ApplyFont(int startIndex, int endIndex, short fontIndex)
{
if (startIndex > endIndex)
{
throw new ArgumentException("Start index must be less than end index.");
}
if (startIndex < 0 || endIndex > Length)
{
throw new ArgumentException("Start and end index not in range.");
}
if (startIndex == endIndex)
{
return;
}
//Need to Check what the font Is currently, so we can reapply it after
//the range Is completed
short currentFont = NO_FONT;
if (endIndex != Length)
{
currentFont = this.GetFontAtIndex(endIndex);
}
//Need to clear the current formatting between the startIndex and endIndex
_string = CloneStringIfRequired();
System.Collections.Generic.List <UnicodeString.FormatRun> formatting = _string.FormatIterator();
ArrayList deletedFR = new ArrayList();
if (formatting != null)
{
IEnumerator formats = formatting.GetEnumerator();
while (formats.MoveNext())
{
UnicodeString.FormatRun r = (UnicodeString.FormatRun)formats.Current;
if ((r.CharacterPos >= startIndex) && (r.CharacterPos < endIndex))
{
deletedFR.Add(r);
}
}
}
foreach (UnicodeString.FormatRun fr in deletedFR)
{
_string.RemoveFormatRun(fr);
}
_string.AddFormatRun(new UnicodeString.FormatRun((short)startIndex, fontIndex));
if (endIndex != Length)
{
_string.AddFormatRun(new UnicodeString.FormatRun((short)endIndex, currentFont));
}
AddToSSTIfRequired();
}