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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 <graphic/GraphicID.hxx>
#include <impgraph.hxx>
#include <rtl/crc.h>
#include <rtl/strbuf.hxx>
GraphicID::GraphicID(ImpGraphic const& rGraphic)
{
rGraphic.ensureAvailable();
mnID1 = static_cast<sal_uLong>(rGraphic.getType()) << 28;
mnID2 = mnID3 = mnID4 = 0;
if (rGraphic.getType() == GraphicType::Bitmap)
{
auto const& rVectorGraphicDataPtr = rGraphic.getVectorGraphicData();
if (rVectorGraphicDataPtr)
{
const basegfx::B2DRange& rRange = rVectorGraphicDataPtr->getRange();
mnID1 |= rVectorGraphicDataPtr->getBinaryDataContainer().getSize();
mnID2 = basegfx::fround(rRange.getWidth());
mnID3 = basegfx::fround(rRange.getHeight());
mnID4 = rtl_crc32(0, rVectorGraphicDataPtr->getBinaryDataContainer().getData(),
rVectorGraphicDataPtr->getBinaryDataContainer().getSize());
}
else if (rGraphic.isAnimated())
{
const Animation aAnimation(rGraphic.getAnimation());
mnID1 |= (aAnimation.Count() & 0x0fffffff);
mnID2 = aAnimation.GetDisplaySizePixel().Width();
mnID3 = aAnimation.GetDisplaySizePixel().Height();
mnID4 = rGraphic.getChecksum();
}
else
{
const BitmapEx aBmpEx(rGraphic.getBitmapEx(GraphicConversionParameters()));
mnID1 |= aBmpEx.IsAlpha() ? 1 : 0;
mnID2 = aBmpEx.GetSizePixel().Width();
mnID3 = aBmpEx.GetSizePixel().Height();
mnID4 = rGraphic.getChecksum();
}
}
else if (rGraphic.getType() == GraphicType::GdiMetafile)
{
const GDIMetaFile& rMtf = rGraphic.getGDIMetaFile();
mnID1 |= (rMtf.GetActionSize() & 0x0fffffff);
mnID2 = rMtf.GetPrefSize().Width();
mnID3 = rMtf.GetPrefSize().Height();
mnID4 = rGraphic.getChecksum();
}
}
OString GraphicID::getIDString() const
{
static const char aHexData[]
= { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F' };
sal_Int32 nShift, nIndex = 0;
sal_Int32 nLen = 24 + (2 * BITMAP_CHECKSUM_SIZE);
OStringBuffer aHexStr(nLen);
aHexStr.setLength(nLen);
for (nShift = 28; nShift >= 0; nShift -= 4)
aHexStr[nIndex++] = aHexData[(mnID1 >> static_cast<sal_uInt32>(nShift)) & 0xf];
for (nShift = 28; nShift >= 0; nShift -= 4)
aHexStr[nIndex++] = aHexData[(mnID2 >> static_cast<sal_uInt32>(nShift)) & 0xf];
for (nShift = 28; nShift >= 0; nShift -= 4)
aHexStr[nIndex++] = aHexData[(mnID3 >> static_cast<sal_uInt32>(nShift)) & 0xf];
for (nShift = (8 * BITMAP_CHECKSUM_SIZE) - 4; nShift >= 0; nShift -= 4)
aHexStr[nIndex++] = aHexData[(mnID4 >> static_cast<sal_uInt32>(nShift)) & 0xf];
return aHexStr.makeStringAndClear();
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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