diff options
author | RĂ¼diger Timm <rt@openoffice.org> | 2005-10-24 06:39:29 +0000 |
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committer | RĂ¼diger Timm <rt@openoffice.org> | 2005-10-24 06:39:29 +0000 |
commit | db81ed98b0b67d4e25682ee0246d9cc8c6536222 (patch) | |
tree | 994a9989ea077391256daa3910e5c55c77fc8967 /sd/source/ui/slidesorter/cache/SlsBitmapCompressor.cxx | |
parent | ee85ea9e26988da8f24931b0860f67295c7e1b4f (diff) |
INTEGRATION: CWS impress69 (1.1.2); FILE ADDED
2005/09/21 15:06:41 af 1.1.2.1: #i54916# Initial revision.
Diffstat (limited to 'sd/source/ui/slidesorter/cache/SlsBitmapCompressor.cxx')
-rw-r--r-- | sd/source/ui/slidesorter/cache/SlsBitmapCompressor.cxx | 296 |
1 files changed, 296 insertions, 0 deletions
diff --git a/sd/source/ui/slidesorter/cache/SlsBitmapCompressor.cxx b/sd/source/ui/slidesorter/cache/SlsBitmapCompressor.cxx new file mode 100644 index 000000000000..5989f3f7c64c --- /dev/null +++ b/sd/source/ui/slidesorter/cache/SlsBitmapCompressor.cxx @@ -0,0 +1,296 @@ +/************************************************************************* + * + * $RCSfile: SlsBitmapCompressor.cxx,v $ + * + * $Revision: 1.2 $ + * + * last change: $Author: rt $ $Date: 2005-10-24 07:39:29 $ + * + * The Contents of this file are made available subject to the terms of + * either of the following licenses + * + * - GNU Lesser General Public License Version 2.1 + * - Sun Industry Standards Source License Version 1.1 + * + * Sun Microsystems Inc., October, 2000 + * + * GNU Lesser General Public License Version 2.1 + * ============================================= + * Copyright 2000 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 + * + * + * Sun Industry Standards Source License Version 1.1 + * ================================================= + * The contents of this file are subject to the Sun Industry Standards + * Source License Version 1.1 (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.openoffice.org/license.html. + * + * Software provided under this License is provided on an "AS IS" basis, + * WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, + * WITHOUT LIMITATION, WARRANTIES THAT THE SOFTWARE IS FREE OF DEFECTS, + * MERCHANTABLE, FIT FOR A PARTICULAR PURPOSE, OR NON-INFRINGING. + * See the License for the specific provisions governing your rights and + * obligations concerning the Software. + * + * The Initial Developer of the Original Code is: Sun Microsystems, Inc. + * + * Copyright: 2000 by Sun Microsystems, Inc. + * + * All Rights Reserved. + * + * Contributor(s): _______________________________________ + * + * + ************************************************************************/ + +#include "SlsBitmapCompressor.hxx" + +#include <tools/stream.hxx> +#include <vcl/bitmapex.hxx> +#include <vcl/pngread.hxx> +#include <vcl/pngwrite.hxx> + +namespace sd { namespace slidesorter { namespace cache { + + +//===== NoBitmapCompression =================================================== + +/** This dummy replacement simply stores a shared pointer to the original + preview bitmap. +*/ +class NoBitmapCompression::DummyReplacement + : public BitmapReplacement +{ +public: + ::boost::shared_ptr<BitmapEx> mpPreview; + Size maOriginalSize; + + DummyReplacement (const ::boost::shared_ptr<BitmapEx>& rpPreview) : mpPreview(rpPreview) + { + } + virtual sal_Int32 GetMemorySize (void) const + { + return mpPreview->GetSizeBytes(); + } +}; + + + + +::boost::shared_ptr<BitmapReplacement> NoBitmapCompression::Compress ( + const ::boost::shared_ptr<BitmapEx>& rpBitmap) const +{ + return ::boost::shared_ptr<BitmapReplacement>(new DummyReplacement(rpBitmap)); +} + + + + +::boost::shared_ptr<BitmapEx> NoBitmapCompression::Decompress ( + const BitmapReplacement& rBitmapData) const +{ + return dynamic_cast<const DummyReplacement&>(rBitmapData).mpPreview; +} + + + + +bool NoBitmapCompression::IsLossless (void) const +{ + return true; +} + + + + +//===== CompressionByDeletion ================================================= + +::boost::shared_ptr<BitmapReplacement> CompressionByDeletion::Compress ( + const ::boost::shared_ptr<BitmapEx>& rpBitmap) const +{ + return ::boost::shared_ptr<BitmapReplacement>(); +} + + + + +::boost::shared_ptr<BitmapEx> CompressionByDeletion::Decompress ( + const BitmapReplacement& rBitmapData) const +{ + // Return a NULL pointer. This will eventually lead to a request for + // the creation of a new one. + return ::boost::shared_ptr<BitmapEx>(); +} + + + + +bool CompressionByDeletion::IsLossless (void) const +{ + return false; +} + + + + +//===== ResolutionReduction =================================================== + +/** Store a scaled down bitmap together with the original size. +*/ +class ResolutionReduction::ResolutionReducedReplacement : public BitmapReplacement +{ +public: + ::boost::shared_ptr<BitmapEx> mpPreview; + Size maOriginalSize; + + virtual sal_Int32 GetMemorySize (void) const + { + if (mpPreview.get() != NULL) + return mpPreview->GetSizeBytes(); + else + return 0; + } +}; + + + + +::boost::shared_ptr<BitmapReplacement> ResolutionReduction::Compress ( + const ::boost::shared_ptr<BitmapEx>& rpBitmap) const +{ + ResolutionReducedReplacement* pResult = new ResolutionReducedReplacement(); + pResult->mpPreview.reset(new BitmapEx(*rpBitmap)); + Size aSize (rpBitmap->GetSizePixel()); + pResult->maOriginalSize = aSize; + if (aSize.Width()>0 && aSize.Width()<mnWidth) + { + int nHeight = aSize.Height() * mnWidth / aSize.Width() ; + pResult->mpPreview->Scale(Size(mnWidth,nHeight)); + } + + return ::boost::shared_ptr<BitmapReplacement>(pResult); +} + + + + +::boost::shared_ptr<BitmapEx> ResolutionReduction::Decompress ( + const BitmapReplacement& rBitmapData) const +{ + ::boost::shared_ptr<BitmapEx> pResult; + + const ResolutionReducedReplacement* pData ( + dynamic_cast<const ResolutionReducedReplacement*>(&rBitmapData)); + + if (pData->mpPreview.get() != NULL) + { + pResult.reset(new BitmapEx(*pData->mpPreview)); + if (pData->maOriginalSize.Width() > mnWidth) + pResult->Scale(pData->maOriginalSize); + } + + return pResult; +} + + + + +bool ResolutionReduction::IsLossless (void) const +{ + return false; +} + + + + +//===== PNGCompression ======================================================== + + +class PngCompression::PngReplacement : public BitmapReplacement +{ +public: + void* mpData; + sal_Int32 mnDataSize; + Size maImageSize; + PngReplacement (void) + : mpData(NULL), + mnDataSize(0), + maImageSize(0,0) + {} + virtual ~PngReplacement (void) + { + delete [] mpData; + } + virtual sal_Int32 GetMemorySize (void) const + { + return mnDataSize; + } +}; + + + + +::boost::shared_ptr<BitmapReplacement> PngCompression::Compress ( + const ::boost::shared_ptr<BitmapEx>& rpBitmap) const +{ + ::vcl::PNGWriter aWriter (*rpBitmap); + SvMemoryStream aStream (32768, 32768); + aWriter.Write(aStream); + + PngReplacement* pResult = new PngReplacement(); + pResult->maImageSize = rpBitmap->GetSizePixel(); + pResult->mnDataSize = aStream.Tell(); + pResult->mpData = new char[pResult->mnDataSize]; + memcpy(pResult->mpData, aStream.GetData(), pResult->mnDataSize); + + return ::boost::shared_ptr<BitmapReplacement>(pResult); +} + + + + +::boost::shared_ptr<BitmapEx> PngCompression::Decompress ( + const BitmapReplacement& rBitmapData) const +{ + BitmapEx* pResult = NULL; + const PngReplacement* pData (dynamic_cast<const PngReplacement*>(&rBitmapData)); + if (pData != NULL) + { + SvMemoryStream aStream (pData->mpData, pData->mnDataSize, STREAM_READ); + ::vcl::PNGReader aReader (aStream); + pResult = new BitmapEx(aReader.Read()); + } + + sal_Int32 nRatio ((100L * (ULONG)pResult->GetSizeBytes()) / (ULONG)pData->mnDataSize); + + return ::boost::shared_ptr<BitmapEx>(pResult); +} + + + + +bool PngCompression::IsLossless (void) const +{ + return true; +} + + + + +} } } // end of namespace ::sd::slidesorter::cache |