void CMarkTextService::_ClearCompositionDisplayAttributes(TfEditCookie ec)
{
ITfRange *pRangeComposition;
ITfContext *pContext;
ITfProperty *pDisplayAttributeProperty;
// we need a range and the context it lives in
if (_pComposition->GetRange(&pRangeComposition) != S_OK)
return;
if (pRangeComposition->GetContext(&pContext) != S_OK)
{
pContext = NULL;
goto Exit;
}
// get our the display attribute property
if (pContext->GetProperty(GUID_PROP_ATTRIBUTE, &pDisplayAttributeProperty) != S_OK)
goto Exit;
// clear the value over the range
pDisplayAttributeProperty->Clear(ec, pRangeComposition);
pDisplayAttributeProperty->Release();
Exit:
pRangeComposition->Release();
SafeRelease(pContext);
}
void TextService::setCompositionString(EditSession* session, const wchar_t* str, int len) {
ITfContext* context = session->context();
if(context) {
TfEditCookie editCookie = session->editCookie();
TF_SELECTION selection;
ULONG selectionNum;
// get current selection/insertion point
if(context->GetSelection(editCookie, TF_DEFAULT_SELECTION, 1, &selection, &selectionNum) == S_OK) {
ComPtr<ITfRange> compositionRange;
if(composition_->GetRange(&compositionRange) == S_OK) {
bool selPosInComposition = true;
// if current insertion point is not covered by composition, we cannot insert text here.
if(selPosInComposition) {
// replace context of composion area with the new string.
compositionRange->SetText(editCookie, TF_ST_CORRECTION, str, len);
// move the insertion point to end of the composition string
selection.range->Collapse(editCookie, TF_ANCHOR_END);
context->SetSelection(editCookie, 1, &selection);
}
// set display attribute to the composition range
ComPtr<ITfProperty> dispAttrProp;
if(context->GetProperty(GUID_PROP_ATTRIBUTE, &dispAttrProp) == S_OK) {
VARIANT val;
val.vt = VT_I4;
val.lVal = module_->inputAttrib()->atom();
dispAttrProp->SetValue(editCookie, compositionRange, &val);
}
}
selection.range->Release();
}
}
}
BOOL CMarkTextService::_SetCompositionDisplayAttributes(TfEditCookie ec)
{
ITfRange *pRangeComposition;
ITfContext *pContext;
ITfProperty *pDisplayAttributeProperty;
VARIANT var;
HRESULT hr;
// we need a range and the context it lives in
if (_pComposition->GetRange(&pRangeComposition) != S_OK)
return FALSE;
hr = E_FAIL;
if (pRangeComposition->GetContext(&pContext) != S_OK)
{
pContext = NULL;
goto Exit;
}
// get our the display attribute property
if (pContext->GetProperty(GUID_PROP_ATTRIBUTE, &pDisplayAttributeProperty) != S_OK)
goto Exit;
// set the value over the range
// the application will use this guid atom to lookup the acutal rendering information
var.vt = VT_I4; // we're going to set a TfGuidAtom
var.lVal = _gaDisplayAttribute; // our cached guid atom for c_guidMarkDisplayAttribute
hr = pDisplayAttributeProperty->SetValue(ec, pRangeComposition, &var);
pDisplayAttributeProperty->Release();
Exit:
pRangeComposition->Release();
SafeRelease(pContext);
return (hr == S_OK);
}