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Diffstat (limited to 'dtrans/source/win32/clipb/MtaOleClipb.hxx')
-rw-r--r-- | dtrans/source/win32/clipb/MtaOleClipb.hxx | 117 |
1 files changed, 117 insertions, 0 deletions
diff --git a/dtrans/source/win32/clipb/MtaOleClipb.hxx b/dtrans/source/win32/clipb/MtaOleClipb.hxx new file mode 100644 index 000000000..bf71ac26e --- /dev/null +++ b/dtrans/source/win32/clipb/MtaOleClipb.hxx @@ -0,0 +1,117 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ +/* + * This file is part of the LibreOffice project. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + * + * This file incorporates work covered by the following license notice: + * + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed + * with this work for additional information regarding copyright + * ownership. The ASF licenses this file to you under the Apache + * License, Version 2.0 (the "License"); you may not use this file + * except in compliance with the License. You may obtain a copy of + * the License at http://www.apache.org/licenses/LICENSE-2.0 . + */ + +#ifndef INCLUDED_DTRANS_SOURCE_WIN32_CLIPB_MTAOLECLIPB_HXX +#define INCLUDED_DTRANS_SOURCE_WIN32_CLIPB_MTAOLECLIPB_HXX + +#include <sal/types.h> +#include <osl/mutex.hxx> + +#include <objidl.h> + +// the Mta-Ole clipboard class is for internal use only! +// only one instance of this class should be created, the +// user has to ensure this! +// the class is not thread-safe because it will be used +// only from within the clipboard service and the methods +// of the clipboard service are already synchronized + +class CMtaOleClipboard +{ +public: + typedef void ( WINAPI *LPFNC_CLIPVIEWER_CALLBACK_t )( void ); + +public: + CMtaOleClipboard( ); + ~CMtaOleClipboard( ); + + // clipboard functions + HRESULT setClipboard( IDataObject* pIDataObject ); + HRESULT getClipboard( IDataObject** ppIDataObject ); + HRESULT flushClipboard( ); + + // register/unregister a clipboard viewer; there can only + // be one at a time; parameter NULL means unregister + // a clipboard viewer + // returns true on success else false; use GetLastError( ) in + // false case + bool registerClipViewer( LPFNC_CLIPVIEWER_CALLBACK_t pfncClipViewerCallback ); + +private: + unsigned int run( ); + + // create a hidden window which serves as a request target; so we + // guarantee synchronization + void createMtaOleReqWnd( ); + + // message support + bool postMessage( UINT msg, WPARAM wParam = 0, LPARAM lParam = 0 ); + LRESULT sendMessage( UINT msg, WPARAM wParam = 0, LPARAM lParam = 0 ); + + // message handler functions; remember these functions are called + // from a different thread context! + + static HRESULT onSetClipboard( IDataObject* pIDataObject ); + static HRESULT onGetClipboard( LPSTREAM* ppStream ); + static HRESULT onFlushClipboard( ); + bool onRegisterClipViewer( LPFNC_CLIPVIEWER_CALLBACK_t pfncClipViewerCallback ); + + // win32 clipboard listener support + LRESULT onClipboardUpdate(); + + static LRESULT CALLBACK mtaOleReqWndProc( HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam ); + static unsigned int WINAPI oleThreadProc( LPVOID pParam ); + + static unsigned int WINAPI clipboardChangedNotifierThreadProc( LPVOID pParam ); + + bool WaitForThreadReady( ) const; + +private: + HANDLE m_hOleThread; + unsigned m_uOleThreadId; + HANDLE m_hEvtThrdReady; + HWND m_hwndMtaOleReqWnd; + HANDLE m_hEvtWndDisposed; + ATOM m_MtaOleReqWndClassAtom; + LPFNC_CLIPVIEWER_CALLBACK_t m_pfncClipViewerCallback; + bool m_bInRegisterClipViewer; + + bool m_bRunClipboardNotifierThread; + HANDLE m_hClipboardChangedNotifierThread; + HANDLE m_hClipboardChangedNotifierEvents[2]; + HANDLE& m_hClipboardChangedEvent; + HANDLE& m_hTerminateClipboardChangedNotifierEvent; + osl::Mutex m_ClipboardChangedEventCountMutex; + sal_Int32 m_ClipboardChangedEventCount; + + osl::Mutex m_pfncClipViewerCallbackMutex; + + static CMtaOleClipboard* s_theMtaOleClipboardInst; + +// not allowed +private: + CMtaOleClipboard( const CMtaOleClipboard& ); + CMtaOleClipboard& operator=( const CMtaOleClipboard& ); + + friend LRESULT CALLBACK mtaOleReqWndProc( HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam ); +}; + +#endif + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |