// Converts WM_CHAR lParam + ModifyerKeys to an IBusKey.
public static IBusKey Convert(uint lParam, Keys modifyerKeys)
{
// lparm & 0x0f == repeat count
// (lParam & 0xFF0000) >> 16 == scan code
// (lParam & 0xFF0000) >> 16 == extended keys
// (lParam & 20000000) >> 29 == is Alt
IBusKey ret = new IBusKey();
uint scancode = (lParam & 0xFF0000) >> 16;
bool shifted = ((modifyerKeys & Keys.CapsLock) == 0 && (modifyerKeys & Keys.Shift) != 0 ||
((modifyerKeys & Keys.CapsLock) != 0 && (modifyerKeys & Keys.Shift) == 0));
ret.keyval = KeycodeToKeysym(scancode, shifted);
ret.keycode = scancode;
ret.state = ModifyerKeysToState(modifyerKeys);
return(ret);
}
/// <summary>
/// Handle actual key presses.
/// </summary>
/// <returns>
/// true if we handled keypress
/// false if keypress needs handling by someone else
/// </returns>
public bool NotifyKeyPress(uint charCodeUtf16, uint lParam, Keys modifierKeys)
{
if (!IBusCommunicator.Connected)
{
return(false);
}
m_ignoreInitialPreedit = false;
// reset saved preedit selection that we might have set in NotifyMouseClick().
m_savedPreeditSelection = null;
// modifierKeys doesn't contains CapsLock and
// mono Control.IsKeyLocked(Keys.CapsLock) doesn't work on mono.
// so we guess the caps state by unicode value and the shift state
// this is far from ideal.
if (char.IsUpper((char)charCodeUtf16) && (modifierKeys & Keys.Shift) == 0)
{
modifierKeys |= Keys.CapsLock;
}
else if (char.IsLower((char)charCodeUtf16) && (modifierKeys & Keys.Shift) != 0)
{
modifierKeys |= Keys.CapsLock;
}
IBusKey key = KeysConverter.Convert(lParam, modifierKeys);
if (IBusCommunicator.ProcessKeyEvent(key.keyval, key.keycode, key.state))
{
return(true);
}
// if ProcessKeyEvent doesn't consume the key
// we need to kill any preedits and
// sync before continuing processing the keypress
ResetAndWaitForCommit();
return(false);
}