GetTextExtentEditSession.cpp

// THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF
// ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO
// THE IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A
// PARTICULAR PURPOSE.
//
// Copyright (c) Microsoft Corporation. All rights reserved

#include "Private.h"
#include "EditSession.h"
#include "GetTextExtentEditSession.h"
#include "TfTextLayoutSink.h"

//+---------------------------------------------------------------------------
//
// ctor
//
//----------------------------------------------------------------------------

CGetTextExtentEditSession::CGetTextExtentEditSession(_In_ CSampleIME *pTextService, _In_ ITfContext *pContext,
                                                     _In_ ITfContextView *pContextView,
                                                     _In_ ITfRange *pRangeComposition,
                                                     _In_ CTfTextLayoutSink *pTfTextLayoutSink)
    : CEditSessionBase(pTextService, pContext)
{
    _pContextView = pContextView;
    _pRangeComposition = pRangeComposition;
    _pTfTextLayoutSink = pTfTextLayoutSink;
}

//+---------------------------------------------------------------------------
//
// ITfEditSession::DoEditSession
//
//----------------------------------------------------------------------------

STDAPI CGetTextExtentEditSession::DoEditSession(TfEditCookie ec)
{
    RECT rc = {0, 0, 0, 0};
    BOOL isClipped = TRUE;

    if (SUCCEEDED(_pContextView->GetTextExt(ec, _pRangeComposition, &rc, &isClipped)))
    {
        _pTfTextLayoutSink->_LayoutChangeNotification(&rc);
    }

    return S_OK;
}