private void SdlKeyDown(SDL_Keycode key, bool repeat)
{
switch (key)
{
case SDL_Keycode.SDLK_LSHIFT:
case SDL_Keycode.SDLK_RSHIFT:
_keyModifiers |= ImlacKeyModifiers.Shift;
break;
case SDL_Keycode.SDLK_LCTRL:
case SDL_Keycode.SDLK_RCTRL:
_keyModifiers |= ImlacKeyModifiers.Ctrl;
break;
case SDL_Keycode.SDLK_LALT:
case SDL_Keycode.SDLK_RALT:
_keyModifiers |= ImlacKeyModifiers.Rept;
break;
default:
UpdateDataSwitches(key, true /* key down */);
if (key == SDL_Keycode.SDLK_INSERT && !repeat)
{
FullScreenToggle();
break;
}
// If this is a repeated keystroke, we'll only log it if
// the Repeat key (Alt) is being held down.
if (repeat && (_keyModifiers & ImlacKeyModifiers.Rept) == 0)
{
break;
}
_keyLatchedLock.EnterWriteLock();
if (!_keyLatched)
{
ImlacKey newCode = TranslateKeyCode(key);
// Only latch valid keys.
if (newCode != ImlacKey.Invalid)
{
_keyLatched = true;
_latchedKeyCode = newCode;
}
}
_keyLatchedLock.ExitWriteLock();
break;
}
}
private ushort GetScancodeForCurrentKey()
{
ushort scanCode = 0;
ImlacKey key = _system.Display.Key;
ImlacKeyModifiers modifiers = _system.Display.KeyModifiers;
if (key != ImlacKey.Invalid)
{
Trace.Log(LogType.Keyboard, "Keypress is {0}", key);
scanCode = (modifiers & ImlacKeyModifiers.Shift) != 0 ? _keyMappings[key].ShiftedCode : _keyMappings[key].NormalCode;
if (scanCode == 0)
{
// no code for shifted key, just use normal one.
scanCode = _keyMappings[key].NormalCode;
}
// bit 8 is always set
scanCode = (ushort)(scanCode | 0x80);
//
// The Repeat, Control, and Shift keys correspond to bits 5, 6, and 7 of the
// scancode returned.
//
if ((modifiers & ImlacKeyModifiers.Rept) != 0)
{
scanCode |= 0x400;
}
if ((modifiers & ImlacKeyModifiers.Ctrl) != 0)
{
scanCode |= 0x200;
}
if ((modifiers & ImlacKeyModifiers.Shift) != 0)
{
scanCode |= 0x100;
}
Trace.Log(LogType.Keyboard, "Final keycode is {0}", Helpers.ToOctal(scanCode));
}
else
{
scanCode = 0;
}
return(scanCode);
}
private static void AddMapping(ImlacKey key, byte normal, byte shifted)
{
_keyMappings.Add(key, new ImlacKeyMapping(key, normal, shifted));
}
public ImlacKeyMapping(ImlacKey key, byte normal, byte shifted)
{
Key = key;
NormalCode = normal;
ShiftedCode = shifted;
}
