public override TextPointer GetPositionFromPoint(Point point, bool snapToText)
{
TextRange contentRange = null;
// Using the IContentHost interface we can quickly narrow down our
// range to a run within the text block
IContentHost contentHost = this.ContentHost;
if (contentHost != null)
{
TextElement te = contentHost.InputHitTest(point) as TextElement;
if (te != null)
{
contentRange = new TextRange(te.ContentStart, te.ContentEnd);
}
}
if (contentRange == null)
{
contentRange = new TextRange(Start, End);
}
TextPointer result = GetPositionFromPoint(point, contentRange, snapToText);
Assert.Implies(snapToText, result != null);
return(result);
}
//-------------------------------------------------------------------
//
// IContentHost Members
//
//-------------------------------------------------------------------
#region IContentHost Members
/// <summary>
/// <see cref="IContentHost.InputHitTest"/>
/// </summary>
IInputElement IContentHost.InputHitTest(Point point)
{
IContentHost host = _owner.Target as IContentHost;
if (host != null)
{
return(host.InputHitTest(point));
}
return(null);
}
