1 files changed, 173 insertions, 0 deletions
diff --git a/vcl/source/gdi/gfxlink.cxx b/vcl/source/gdi/gfxlink.cxx
new file mode 100644
index 0000000000..c6ca4678b0
--- /dev/null
+++ b/vcl/source/gdi/gfxlink.cxx
@@ -0,0 +1,173 @@
+/* -*- 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 <sal/log.hxx>
+#include <tools/stream.hxx>
+#include <tools/vcompat.hxx>
+#include <utility>
+#include <vcl/graph.hxx>
+#include <vcl/gfxlink.hxx>
+#include <vcl/graphicfilter.hxx>
+#include <memory>
+#include <o3tl/hash_combine.hxx>
+
+GfxLink::GfxLink()
+    : meType(GfxLinkType::NONE)
+    , mnUserId(0)
+    , maHash(0)
+    , mbPrefMapModeValid(false)
+    , mbPrefSizeValid(false)
+{
+}
+
+GfxLink::GfxLink(BinaryDataContainer aDataConainer, GfxLinkType nType)
+    : meType(nType)
+    , mnUserId(0)
+    , maDataContainer(std::move(aDataConainer))
+    , maHash(0)
+    , mbPrefMapModeValid(false)
+    , mbPrefSizeValid(false)
+{
+}
+
+size_t GfxLink::GetHash() const
+{
+    if (!maHash)
+    {
+        std::size_t seed = maDataContainer.calculateHash();
+        o3tl::hash_combine(seed, meType);
+        maHash = seed;
+    }
+    return maHash;
+}
+
+bool GfxLink::operator==( const GfxLink& rGfxLink ) const
+{
+    if (GetDataSize() != rGfxLink.GetDataSize()
+        || meType != rGfxLink.meType
+        || GetHash() != rGfxLink.GetHash())
+        return false;
+
+    const sal_uInt8* pSource = GetData();
+    const sal_uInt8* pDestination = rGfxLink.GetData();
+
+    if (pSource == pDestination)
+        return true;
+
+    sal_uInt32 nSourceSize = GetDataSize();
+    sal_uInt32 nDestSize = rGfxLink.GetDataSize();
+
+    if (pSource && pDestination && (nSourceSize == nDestSize))
+        return memcmp(pSource, pDestination, nSourceSize) == 0;
+
+    return false;
+}
+
+bool GfxLink::IsNative() const
+{
+    return meType >= GfxLinkType::NativeFirst && meType <= GfxLinkType::NativeLast;
+}
+
+const sal_uInt8* GfxLink::GetData() const
+{
+    return maDataContainer.getData();
+}
+
+void GfxLink::SetPrefSize( const Size& rPrefSize )
+{
+    maPrefSize = rPrefSize;
+    mbPrefSizeValid = true;
+}
+
+void GfxLink::SetPrefMapMode( const MapMode& rPrefMapMode )
+{
+    maPrefMapMode = rPrefMapMode;
+    mbPrefMapModeValid = true;
+}
+
+bool GfxLink::LoadNative( Graphic& rGraphic ) const
+{
+    bool bRet = false;
+
+    if (IsNative() && !maDataContainer.isEmpty())
+    {
+        const sal_uInt8* pData = GetData();
+        if (pData)
+        {
+            SvMemoryStream aMemoryStream(const_cast<sal_uInt8*>(pData), GetDataSize(), StreamMode::READ | StreamMode::WRITE);
+            OUString aShortName;
+
+            switch (meType)
+            {
+                case GfxLinkType::NativeGif: aShortName = GIF_SHORTNAME; break;
+                case GfxLinkType::NativeJpg: aShortName = JPG_SHORTNAME; break;
+                case GfxLinkType::NativePng: aShortName = PNG_SHORTNAME; break;
+                case GfxLinkType::NativeTif: aShortName = TIF_SHORTNAME; break;
+                case GfxLinkType::NativeWmf: aShortName = WMF_SHORTNAME; break;
+                case GfxLinkType::NativeMet: aShortName = MET_SHORTNAME; break;
+                case GfxLinkType::NativePct: aShortName = PCT_SHORTNAME; break;
+                case GfxLinkType::NativeSvg: aShortName = SVG_SHORTNAME; break;
+                case GfxLinkType::NativeBmp: aShortName = BMP_SHORTNAME; break;
+                case GfxLinkType::NativePdf: aShortName = PDF_SHORTNAME; break;
+                case GfxLinkType::NativeWebp: aShortName = WEBP_SHORTNAME; break;
+                default: break;
+            }
+            if (!aShortName.isEmpty())
+            {
+                GraphicFilter& rFilter = GraphicFilter::GetGraphicFilter();
+                sal_uInt16 nFormat = rFilter.GetImportFormatNumberForShortName(aShortName);
+                ErrCode nResult = rFilter.ImportGraphic(rGraphic, u"", aMemoryStream, nFormat);
+                if (nResult == ERRCODE_NONE)
+                    bRet = true;
+            }
+        }
+    }
+
+    return bRet;
+}
+
+bool GfxLink::ExportNative( SvStream& rOStream ) const
+{
+    if( GetDataSize() )
+    {
+        auto pData = GetData();
+        if (pData)
+            rOStream.WriteBytes(pData, GetDataSize());
+    }
+
+    return ( rOStream.GetError() == ERRCODE_NONE );
+}
+
+bool GfxLink::IsEMF() const
+{
+    const sal_uInt8* pGraphicAry = GetData();
+    if ((GetType() == GfxLinkType::NativeWmf) && pGraphicAry && (GetDataSize() > 0x2c))
+    {
+        // check the magic number
+        if ((pGraphicAry[0x28] == 0x20) && (pGraphicAry[0x29] == 0x45)
+            && (pGraphicAry[0x2a] == 0x4d) && (pGraphicAry[0x2b] == 0x46))
+        {
+            //emf detected
+            return true;
+        }
+    }
+    return false;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */