bool QWindowsInputContext::composition(HWND hwnd, LPARAM lParamIn)
{
QObject *fo = qApp->focusObject();
const int lParam = int(lParamIn);
if (QWindowsContext::verboseInputMethods)
qDebug() << '>' << __FUNCTION__ << fo << debugComposition(lParam)
<< " composing=" << m_compositionContext.isComposing;
if (!fo || m_compositionContext.hwnd != hwnd || !lParam)
return false;
const HIMC himc = ImmGetContext(m_compositionContext.hwnd);
if (!himc)
return false;
QScopedPointer<QInputMethodEvent> event;
if (lParam & (GCS_COMPSTR | GCS_COMPATTR | GCS_CURSORPOS)) {
if (!m_compositionContext.isComposing)
startContextComposition();
// Some intermediate composition result. Parametrize event with
// attribute sequence specifying the formatting of the converted part.
int selStart, selLength;
m_compositionContext.composition = getCompositionString(himc, GCS_COMPSTR);
m_compositionContext.position = ImmGetCompositionString(himc, GCS_CURSORPOS, 0, 0);
getCompositionStringConvertedRange(himc, &selStart, &selLength);
if ((lParam & CS_INSERTCHAR) && (lParam & CS_NOMOVECARET)) {
// make Korean work correctly. Hope this is correct for all IMEs
selStart = 0;
selLength = m_compositionContext.composition.size();
}
if (!selLength)
selStart = 0;
event.reset(new QInputMethodEvent(m_compositionContext.composition,
intermediateMarkup(m_compositionContext.position,
m_compositionContext.composition.size(),
selStart, selLength)));
}
if (event.isNull())
event.reset(new QInputMethodEvent);
if (lParam & GCS_RESULTSTR) {
// A fixed result, return the converted string
event->setCommitString(getCompositionString(himc, GCS_RESULTSTR));
endContextComposition();
}
const bool result = QCoreApplication::sendEvent(fo, event.data());
if (QWindowsContext::verboseInputMethods)
qDebug() << '<' << __FUNCTION__ << "sending markup="
<< event->attributes().size()
<< " commit=" << event->commitString()
<< " to " << fo << " returns " << result;
update(Qt::ImQueryAll);
ImmReleaseContext(m_compositionContext.hwnd, himc);
return result;
}
WCHAR* IME_getCompositionString() {
HWND hwnd = GetFocus();
if (!hwnd) return NULL;
HIMC imc = ImmGetContext(hwnd);
if (!imc) return NULL;
WCHAR* comp_str = getCompositionString(imc, GCS_COMPSTR);
ImmReleaseContext(hwnd, imc);
return comp_str;
}
static bool handleEndComposition(HWND hwnd, WPARAM wParam, LPARAM lParam) {
/* Obtain IME context */
HIMC imc = ImmGetContext(hwnd);
if (!imc) return false;
wchar_t* comp_str = getCompositionString(imc, GCS_RESULTSTR);
ImmReleaseContext(hwnd, imc);
/* Generate notification */
nvdaControllerInternal_inputCompositionUpdate((comp_str?comp_str:L""),-1,-1,0);
if(comp_str) {
free(comp_str);
return true;
}
return false;
}
static bool handleComposition(HWND hwnd, WPARAM wParam, LPARAM lParam) {
/* Obtain IME context */
HIMC imc = ImmGetContext(hwnd);
if (!imc) return false;
wchar_t* comp_str = getCompositionString(imc, GCS_COMPSTR);
long selectionStart=ImmGetCompositionString(imc,GCS_CURSORPOS,NULL,0)&0xffff;
ImmReleaseContext(hwnd, imc);
if(!comp_str) return false;
/* Generate notification */
long len=(long)wcslen(comp_str);
if(len>1||(len==1&&comp_str[0]!=L'\x3000')) {
nvdaControllerInternal_inputCompositionUpdate(comp_str,selectionStart,selectionStart,0);
}
free(comp_str);
return true;
}