/// <summary>
/// Returns the character index where the text hits the margin, using either fixed-width or variable-width rules.
/// </summary>
/// <param name="messageText">The text to look inside</param>
/// <param name="position"></param>
/// <returns></returns>
private int FindCharacterIndexOfRightMargin(string messageText, int position)
{
if (!this.UseVariableWidthFont)
{
int stringLength = messageText.Length;
int x = 0;
int targetX = position;
int i = 0;
while (x < targetX && i < stringLength)
{
char c = messageText[i];
if (c >= 0x80 && !(c >= 0xFF61 && c <= 0xFF9F))
{
x += 2;
}
else
{
x++;
}
i++;
}
return(i);
}
else
{
int stringLength = messageText.Length;
float targetX = position + 0.25f;
float x = 0;
int i = 0;
while (x < targetX && i < stringLength)
{
x += characterWidthCache.GetRelativeWidth(messageText[i]);
if (x < targetX)
{
i++;
}
}
return(i);
}
}
