1 /************************************************************************* 2 * 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * Copyright 2000, 2010 Oracle and/or its affiliates. 6 * 7 * OpenOffice.org - a multi-platform office productivity suite 8 * 9 * This file is part of OpenOffice.org. 10 * 11 * OpenOffice.org is free software: you can redistribute it and/or modify 12 * it under the terms of the GNU Lesser General Public License version 3 13 * only, as published by the Free Software Foundation. 14 * 15 * OpenOffice.org is distributed in the hope that it will be useful, 16 * but WITHOUT ANY WARRANTY; without even the implied warranty of 17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 18 * GNU Lesser General Public License version 3 for more details 19 * (a copy is included in the LICENSE file that accompanied this code). 20 * 21 * You should have received a copy of the GNU Lesser General Public License 22 * version 3 along with OpenOffice.org. If not, see 23 * <http://www.openoffice.org/license.html> 24 * for a copy of the LGPLv3 License. 25 * 26 ************************************************************************/ 27 28 #ifndef INCLUDED_CANVAS_BASEMUTEXHELPER_HXX 29 #define INCLUDED_CANVAS_BASEMUTEXHELPER_HXX 30 31 #include <osl/mutex.hxx> 32 33 34 /* Definition of the BaseMutexHelper class */ 35 36 namespace canvas 37 { 38 /** Base class, deriving from ::comphelper::OBaseMutex and 39 initializing its own baseclass with m_aMutex. 40 41 This is necessary to make the CanvasBase, GraphicDeviceBase, 42 etc. classes freely combinable - letting them perform this 43 initialization would prohibit deriving e.g. CanvasBase from 44 GraphicDeviceBase. 45 */ 46 template< class Base > class BaseMutexHelper : public Base 47 { 48 public: 49 typedef Base BaseType; 50 51 /** Construct BaseMutexHelper 52 53 This method is the whole purpose of this template: 54 initializing a base class with the provided m_aMutex 55 member (the WeakComponentImplHelper templates need that, 56 as they require the lifetime of the mutex to extend 57 theirs). 58 */ 59 BaseMutexHelper() : 60 BaseType( m_aMutex ) 61 { 62 } 63 64 protected: 65 mutable ::osl::Mutex m_aMutex; 66 }; 67 } 68 69 #endif /* INCLUDED_CANVAS_BASEMUTEXHELPER_HXX */ 70