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-/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
-/*************************************************************************
- *
- * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
- *
- * Copyright 2000, 2010 Oracle and/or its affiliates.
- *
- * OpenOffice.org - a multi-platform office productivity suite
- *
- * This file is part of OpenOffice.org.
- *
- * OpenOffice.org is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Lesser General Public License version 3
- * only, as published by the Free Software Foundation.
- *
- * OpenOffice.org 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 version 3 for more details
- * (a copy is included in the LICENSE file that accompanied this code).
- *
- * You should have received a copy of the GNU Lesser General Public License
- * version 3 along with OpenOffice.org. If not, see
- * <http://www.openoffice.org/license.html>
- * for a copy of the LGPLv3 License.
- *
- ************************************************************************/
-
-#ifndef SD_SLIDESORTER_CACHE_COMPACTOR_HXX
-#define SD_SLIDESORTER_CACHE_COMPACTOR_HXX
-
-#include <sal/types.h>
-#include <vcl/timer.hxx>
-#include <memory>
-
-namespace sd { namespace slidesorter { namespace cache {
-
-class BitmapCache;
-class BitmapCompressor;
-
-/** This is an interface class whose implementations are created via the
- Create() factory method.
-*/
-class CacheCompactor
-{
-public:
- virtual ~CacheCompactor (void) {};
-
- /** Create a new instance of the CacheCompactor interface class. The
- type of compaction algorithm used depends on values from the
- configuration: the SlideSorter/PreviewCache/CompactionPolicy
- property of the Impress.xcs file currently supports the values
- "None" and "Compress". With the later the CompressionPolicy
- property is evaluated which implementation of the BitmapCompress
- interface class to use as bitmap compressor.
- @param rCache
- The bitmap cache on which to operate.
- @param nMaximalCacheSize
- The total number of bytes the off-screen bitmaps in the cache
- may have. When the Run() method is (indirectly) called the
- compactor tries to reduce that summed size of off-screen bitmaps
- under this number. However, it is not guaranteed that this
- works in all cases.
- */
- static ::std::auto_ptr<CacheCompactor> Create (
- BitmapCache& rCache,
- sal_Int32 nMaximalCacheSize);
-
- /** Request a compaction of the off-screen previews in the bitmap
- cache. This calls via a timer the Run() method.
- */
- virtual void RequestCompaction (void);
-
-protected:
- BitmapCache& mrCache;
- sal_Int32 mnMaximalCacheSize;
-
- CacheCompactor(
- BitmapCache& rCache,
- sal_Int32 nMaximalCacheSize);
-
- /** This method actually tries to reduce the total number of bytes used
- by the off-screen preview bitmaps.
- */
- virtual void Run (void) = 0;
-
-private:
- /** This timer is used to collect calles to RequestCompaction() and
- eventually call Run().
- */
- Timer maCompactionTimer;
- bool mbIsCompactionRunning;
- DECL_LINK(CompactionCallback, Timer*);
-};
-
-
-
-
-} } } // end of namespace ::sd::slidesorter::cache
-
-#endif
-
-/* vim:set shiftwidth=4 softtabstop=4 expandtab: */