INTEGRATION: CWS canvas02 (1.1.2); FILE ADDED

2005/10/11 15:40:26 thb 1.1.2.2: #i54170# Corrected license headers
2005/06/17 23:36:53 thb 1.1.2.1: #i48939# Refactored canvas, these are base classes that encapsulate common functionality (like input checking, locking, and general behaviour common to all canvas implementations)

1 files changed, 79 insertions, 0 deletions

diff --git a/canvas/inc/canvas/base/basemutexhelper.hxx b/canvas/inc/canvas/base/basemutexhelper.hxx
new file mode 100644
index 000000000000..36aeb6517766
--- /dev/null
+++ b/canvas/inc/canvas/base/basemutexhelper.hxx
@@ -0,0 +1,79 @@
+/*************************************************************************
+ *
+ *  OpenOffice.org - a multi-platform office productivity suite
+ *
+ *  $RCSfile: basemutexhelper.hxx,v $
+ *
+ *  $Revision: 1.2 $
+ *
+ *  last change: $Author: kz $ $Date: 2005-11-02 12:41:36 $
+ *
+ *  The Contents of this file are made available subject to
+ *  the terms of GNU Lesser General Public License Version 2.1.
+ *
+ *
+ *    GNU Lesser General Public License Version 2.1
+ *    =============================================
+ *    Copyright 2005 by Sun Microsystems, Inc.
+ *    901 San Antonio Road, Palo Alto, CA 94303, USA
+ *
+ *    This library is free software; you can redistribute it and/or
+ *    modify it under the terms of the GNU Lesser General Public
+ *    License version 2.1, as published by the Free Software Foundation.
+ *
+ *    This library is distributed in the hope that it will be useful,
+ *    but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ *    Lesser General Public License for more details.
+ *
+ *    You should have received a copy of the GNU Lesser General Public
+ *    License along with this library; if not, write to the Free Software
+ *    Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ *    MA  02111-1307  USA
+ *
+ ************************************************************************/
+
+#ifndef INCLUDED_CANVAS_BASEMUTEXHELPER_HXX
+#define INCLUDED_CANVAS_BASEMUTEXHELPER_HXX
+
+#ifndef _OSL_MUTEX_HXX_
+#include <osl/mutex.hxx>
+#endif
+
+
+/* Definition of the BaseMutexHelper class */
+
+namespace canvas
+{
+    /** Base class, deriving from ::comphelper::OBaseMutex and
+        initializing its own baseclass with m_aMutex.
+
+        This is necessary to make the CanvasBase, GraphicDeviceBase,
+        etc. classes freely combinable - letting them perform this
+        initialization would prohibit deriving e.g. CanvasBase from
+        GraphicDeviceBase.
+     */
+    template< class Base > class BaseMutexHelper : public Base
+    {
+    public:
+        typedef Base BaseType;
+
+        /** Construct BaseMutexHelper
+
+            This method is the whole purpose of this template:
+            initializing a base class with the provided m_aMutex
+            member (the WeakComponentImplHelper templates need that,
+            as they require the lifetime of the mutex to extend
+            theirs).
+         */
+        BaseMutexHelper() :
+            BaseType( m_aMutex )
+        {
+        }
+
+protected:
+        mutable ::osl::Mutex m_aMutex;
+    };
+}
+
+#endif /* INCLUDED_CANVAS_BASEMUTEXHELPER_HXX */