private System.String ResizeLine(TextPaint textPaint, string line, int availableWidth)
{
var texteWidth = MeasureTextWidth (textPaint, line);
var lastDeletePos = -1;
var builder = new StringBuilder (line);
while (texteWidth > availableWidth && builder.Length () > 0) {
lastDeletePos = builder.Length () / 2;
builder.DeleteCharAt (builder.Length () / 2);
var textToMeasure = builder.ToString () + Ellipsis;
texteWidth = MeasureTextWidth (textPaint, textToMeasure);
}
if (lastDeletePos > -1)
builder.Insert (lastDeletePos, Ellipsis);
return builder.ToString ();
}