// Input data in render text values
Rect GetTextSpanRect(Rect lineRect, string renderText, int startPosition, int length)
{
if (startPosition < 0)
{
startPosition = 0;
}
if (startPosition >= renderText.Length - 1)
{
startPosition = renderText.Length - 1;
}
if (startPosition + length >= renderText.Length)
{
length = Mathf.Max(1, renderText.Length - startPosition);
}
var start = LineStyle.GetCursorPixelPosition(lineRect, MissingEngineAPI.GUIContent_Temp(renderText), startPosition);
var end = LineStyle.GetCursorPixelPosition(lineRect, MissingEngineAPI.GUIContent_Temp(renderText), startPosition + length);
return(new Rect(start.x, start.y, end.x - start.x, LineHeight));
}