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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 <vcl/graphicfilter.hxx>
#include <com/sun/star/beans/PropertyValue.hpp>
#include <com/sun/star/uno/Sequence.hxx>
#include <tools/stream.hxx>
#include "jpeg/Exif.hxx"
#include "jpeg/JpegTransform.hxx"
GraphicNativeTransform::GraphicNativeTransform(Graphic& rGraphic)
: mrGraphic(rGraphic)
{
}
GraphicNativeTransform::~GraphicNativeTransform() {}
void GraphicNativeTransform::rotate(sal_uInt16 aInputRotation)
{
// Rotation can be between 0 and 3600
sal_uInt16 aRotation = aInputRotation % 3600;
if (aRotation == 0)
{
return; // No rotation is needed
}
else if (aRotation != 900 && aRotation != 1800 && aRotation != 2700)
{
return;
}
GfxLink aLink = mrGraphic.GetGfxLink();
if (aLink.GetType() == GfxLinkType::NativeJpg)
{
rotateJPEG(aRotation);
}
else if (aLink.GetType() == GfxLinkType::NativePng)
{
rotateGeneric(aRotation, "png");
}
else if (aLink.GetType() == GfxLinkType::NativeGif)
{
rotateGeneric(aRotation, "gif");
}
else if (aLink.GetType() == GfxLinkType::NONE)
{
rotateBitmapOnly(aRotation);
}
}
bool GraphicNativeTransform::rotateBitmapOnly(sal_uInt16 aRotation)
{
if (mrGraphic.IsAnimated())
{
return false;
}
BitmapEx aBitmap = mrGraphic.GetBitmapEx();
aBitmap.Rotate(aRotation, COL_BLACK);
mrGraphic = aBitmap;
return true;
}
bool GraphicNativeTransform::rotateGeneric(sal_uInt16 aRotation, const OUString& aType)
{
// Can't rotate animations yet
if (mrGraphic.IsAnimated())
{
return false;
}
SvMemoryStream aStream;
GraphicFilter& rFilter = GraphicFilter::GetGraphicFilter();
css::uno::Sequence<css::beans::PropertyValue> aFilterData(3);
aFilterData[0].Name = "Interlaced";
aFilterData[0].Value <<= sal_Int32(0);
aFilterData[1].Name = "Compression";
aFilterData[1].Value <<= sal_Int32(9);
aFilterData[2].Name = "Quality";
aFilterData[2].Value <<= sal_Int32(90);
sal_uInt16 nFilterFormat = rFilter.GetExportFormatNumberForShortName(aType);
BitmapEx aBitmap = mrGraphic.GetBitmapEx();
aBitmap.Rotate(aRotation, COL_BLACK);
rFilter.ExportGraphic(aBitmap, "none", aStream, nFilterFormat, &aFilterData);
aStream.Seek(STREAM_SEEK_TO_BEGIN);
Graphic aGraphic;
rFilter.ImportGraphic(aGraphic, "import", aStream);
mrGraphic = aGraphic;
return true;
}
void GraphicNativeTransform::rotateJPEG(sal_uInt16 aRotation)
{
BitmapEx aBitmap = mrGraphic.GetBitmapEx();
if (aBitmap.GetSizePixel().Width() % 16 != 0 || aBitmap.GetSizePixel().Height() % 16 != 0)
{
rotateGeneric(aRotation, "png");
}
else
{
GfxLink aLink = mrGraphic.GetGfxLink();
SvMemoryStream aSourceStream;
aSourceStream.WriteBytes(aLink.GetData(), aLink.GetDataSize());
aSourceStream.Seek(STREAM_SEEK_TO_BEGIN);
exif::Orientation aOrientation = exif::TOP_LEFT;
Exif exif;
if (exif.read(aSourceStream))
{
aOrientation = exif.getOrientation();
}
SvMemoryStream aTargetStream;
JpegTransform transform(aSourceStream, aTargetStream);
transform.setRotate(aRotation);
transform.perform();
aTargetStream.Seek(STREAM_SEEK_TO_BEGIN);
// Reset orientation in exif if needed
if (exif.hasExif() && aOrientation != exif::TOP_LEFT)
{
exif.setOrientation(exif::TOP_LEFT);
exif.write(aTargetStream);
}
aTargetStream.Seek(STREAM_SEEK_TO_BEGIN);
Graphic aGraphic;
GraphicFilter& rFilter = GraphicFilter::GetGraphicFilter();
rFilter.ImportGraphic(aGraphic, "import", aTargetStream);
mrGraphic = aGraphic;
}
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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