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/* -*- 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 .
*/
#include <vcl/GraphicNativeTransform.hxx>
#include <vcl/gfxlink.hxx>
#include "jpeg/Exif.hxx"
#include "jpeg/JpegTransform.hxx"
GraphicNativeTransform::GraphicNativeTransform(Graphic& rGraphic) :
mrGraphic(rGraphic)
{}
GraphicNativeTransform::~GraphicNativeTransform()
{}
bool GraphicNativeTransform::Rotate(sal_uInt16 aRotation)
{
if (aRotation == 0)
return true;
if (aRotation != 900 && aRotation != 1800 && aRotation != 2700)
return false;
GfxLink aLink = mrGraphic.GetLink();
if ( aLink.GetType() != GFX_LINK_TYPE_NATIVE_JPG )
return false;
sal_uInt32 aDataSize = aLink.GetDataSize();
sal_uInt8* aInputBuffer = new sal_uInt8[aDataSize];
memcpy(aInputBuffer, aLink.GetData(), aDataSize);
SvMemoryStream aSourceStream(aInputBuffer, aDataSize, STREAM_READ);
SvMemoryStream aTargetStream;
JpegTransform tranform(aSourceStream, aTargetStream);
tranform.setRotate(aRotation);
tranform.perform();
aTargetStream.Seek( STREAM_SEEK_TO_BEGIN );
Exif exif;
exif.setOrientation(Orientation::TOP_LEFT);
exif.write(aTargetStream);
aTargetStream.Seek( STREAM_SEEK_TO_END );
sal_uInt32 aBufferSize = aTargetStream.Tell();
sal_uInt8* pBuffer = new sal_uInt8[ aBufferSize ];
aTargetStream.Seek( STREAM_SEEK_TO_BEGIN );
aTargetStream.Read( pBuffer, aBufferSize );
BitmapEx aBitmap = mrGraphic.GetBitmapEx();
aBitmap.Rotate(aRotation, COL_BLACK);
mrGraphic = aBitmap;
mrGraphic.SetLink( GfxLink( pBuffer, aBufferSize, aLink.GetType(), sal_True ) );
return true;
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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