public static string ToLabel(this KeyboardKey key)
{
if (key.IsAcceptableInput())
{
return(key.ToChar().ToString());
}
else
{
switch (key)
{
case KeyboardKey.Backspace:
return("←");
case KeyboardKey.Return:
return("return");
default:
throw new System.Exception($"unexpected keycode {key}");
}
}
}
public static char ToChar(this KeyboardKey key, bool uppercase = false)
{
if (!key.IsAcceptableInput(AcceptableKeyboardKeyFlags.Alphabetical | AcceptableKeyboardKeyFlags.Punctuation))
{
throw new Exception("given key is not alphabetical or punctuation");
}
switch (key)
{
case KeyboardKey.Space:
return(' ');
case KeyboardKey.Dash:
return('-');
case KeyboardKey.Apostrophe:
return('\'');
default:
char chr = key.ToString()[0];
return(uppercase ? chr : char.ToLower(chr));
}
}
