private void KeyBox_KeyDown(object sender, KeyEventArgs e)
{
//Fix the position of the scrollviewer if necessary:
var rect = KeyBox.CaretPosition.GetCharacterRect(LogicalDirection.Forward);
if (rect.X < 0)
{
KeyBox.ScrollToHorizontalOffset(KeyBox.HorizontalOffset + rect.X - 5);
}
if (rect.X + rect.Width > KeyBox.ActualWidth)
{
KeyBox.ScrollToHorizontalOffset(KeyBox.HorizontalOffset + (rect.X + rect.Width - KeyBox.ActualWidth) + 5);
}
}
private void KeyBox_PreviewKeyDown(object sender, KeyEventArgs e)
{
var key = KeyManager.GetKey();
switch (e.Key)
{
case Key.Space:
e.Handled = true;
HandleInput(" ");
break;
case Key.Back:
case Key.Delete:
e.Handled = true;
var caretIndex = GetKeyOffset(KeyBox.CaretPosition);
if (e.Key == Key.Back)
{
if (caretIndex == 0)
{
break;
}
caretIndex--;
}
else if (e.Key == Key.Delete && caretIndex == key.Length)
{
break;
}
ReplaceCharInKey(key, GetPossibleCharactersAtKeyEnd(key.Substring(0, caretIndex)), '*', caretIndex);
SetKeyOffset(caretIndex);
break;
case Key.Home:
KeyBox.ScrollToHome();
break;
case Key.End:
var x = KeyBox.Document.ContentEnd.GetCharacterRect(LogicalDirection.Forward).X;
KeyBox.ScrollToHorizontalOffset(x + KeyBox.HorizontalOffset - KeyBox.ActualWidth + 5);
break;
}
}