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-rw-r--r--vcl/source/graphic/GraphicID.cxx100
1 files changed, 100 insertions, 0 deletions
diff --git a/vcl/source/graphic/GraphicID.cxx b/vcl/source/graphic/GraphicID.cxx
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index 000000000..61cdee3c2
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+++ b/vcl/source/graphic/GraphicID.cxx
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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/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 = vcl_get_checksum(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: */