Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 486 insertions, 0 deletions

diff --git a/vcl/source/gdi/TypeSerializer.cxx b/vcl/source/gdi/TypeSerializer.cxx
new file mode 100644
index 000000000..cad183128
--- /dev/null
+++ b/vcl/source/gdi/TypeSerializer.cxx
@@ -0,0 +1,486 @@
+/* -*- 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/TypeSerializer.hxx>
+#include <tools/vcompat.hxx>
+#include <tools/fract.hxx>
+#include <sal/log.hxx>
+#include <comphelper/fileformat.h>
+#include <vcl/filter/SvmReader.hxx>
+#include <vcl/filter/SvmWriter.hxx>
+#include <vcl/gdimtf.hxx>
+#include <vcl/dibtools.hxx>
+
+TypeSerializer::TypeSerializer(SvStream& rStream)
+    : GenericTypeSerializer(rStream)
+{
+}
+
+void TypeSerializer::readGradient(Gradient& rGradient)
+{
+    VersionCompatRead aCompat(mrStream);
+
+    sal_uInt16 nStyle = 0;
+    Color aStartColor;
+    Color aEndColor;
+    sal_uInt16 nAngle = 0;
+    sal_uInt16 nBorder = 0;
+    sal_uInt16 nOffsetX = 0;
+    sal_uInt16 nOffsetY = 0;
+    sal_uInt16 nIntensityStart = 0;
+    sal_uInt16 nIntensityEnd = 0;
+    sal_uInt16 nStepCount = 0;
+
+    mrStream.ReadUInt16(nStyle);
+    readColor(aStartColor);
+    readColor(aEndColor);
+    mrStream.ReadUInt16(nAngle);
+    mrStream.ReadUInt16(nBorder);
+    mrStream.ReadUInt16(nOffsetX);
+    mrStream.ReadUInt16(nOffsetY);
+    mrStream.ReadUInt16(nIntensityStart);
+    mrStream.ReadUInt16(nIntensityEnd);
+    mrStream.ReadUInt16(nStepCount);
+
+    rGradient.SetStyle(static_cast<GradientStyle>(nStyle));
+    rGradient.SetStartColor(aStartColor);
+    rGradient.SetEndColor(aEndColor);
+    if (nAngle > 3600)
+    {
+        SAL_WARN("vcl", "angle out of range " << nAngle);
+        nAngle = 0;
+    }
+    rGradient.SetAngle(Degree10(nAngle));
+    rGradient.SetBorder(nBorder);
+    rGradient.SetOfsX(nOffsetX);
+    rGradient.SetOfsY(nOffsetY);
+    rGradient.SetStartIntensity(nIntensityStart);
+    rGradient.SetEndIntensity(nIntensityEnd);
+    rGradient.SetSteps(nStepCount);
+}
+
+void TypeSerializer::writeGradient(const Gradient& rGradient)
+{
+    VersionCompatWrite aCompat(mrStream, 1);
+
+    mrStream.WriteUInt16(static_cast<sal_uInt16>(rGradient.GetStyle()));
+    writeColor(rGradient.GetStartColor());
+    writeColor(rGradient.GetEndColor());
+    mrStream.WriteUInt16(rGradient.GetAngle().get());
+    mrStream.WriteUInt16(rGradient.GetBorder());
+    mrStream.WriteUInt16(rGradient.GetOfsX());
+    mrStream.WriteUInt16(rGradient.GetOfsY());
+    mrStream.WriteUInt16(rGradient.GetStartIntensity());
+    mrStream.WriteUInt16(rGradient.GetEndIntensity());
+    mrStream.WriteUInt16(rGradient.GetSteps());
+}
+
+void TypeSerializer::readGfxLink(GfxLink& rGfxLink)
+{
+    sal_uInt16 nType = 0;
+    sal_uInt32 nDataSize = 0;
+    sal_uInt32 nUserId = 0;
+
+    Size aSize;
+    MapMode aMapMode;
+    bool bMapAndSizeValid = false;
+
+    {
+        VersionCompatRead aCompat(mrStream);
+
+        // Version 1
+        mrStream.ReadUInt16(nType);
+        mrStream.ReadUInt32(nDataSize);
+        mrStream.ReadUInt32(nUserId);
+
+        if (aCompat.GetVersion() >= 2)
+        {
+            readSize(aSize);
+            readMapMode(aMapMode);
+            bMapAndSizeValid = true;
+        }
+    }
+
+    auto nRemainingData = mrStream.remainingSize();
+    if (nDataSize > nRemainingData)
+    {
+        SAL_WARN("vcl", "graphic link stream is smaller than requested size");
+        nDataSize = nRemainingData;
+    }
+
+    std::unique_ptr<sal_uInt8[]> pBuffer(new sal_uInt8[nDataSize]);
+    mrStream.ReadBytes(pBuffer.get(), nDataSize);
+
+    rGfxLink = GfxLink(std::move(pBuffer), nDataSize, static_cast<GfxLinkType>(nType));
+    rGfxLink.SetUserId(nUserId);
+
+    if (bMapAndSizeValid)
+    {
+        rGfxLink.SetPrefSize(aSize);
+        rGfxLink.SetPrefMapMode(aMapMode);
+    }
+}
+
+void TypeSerializer::writeGfxLink(const GfxLink& rGfxLink)
+{
+    {
+        VersionCompatWrite aCompat(mrStream, 2);
+
+        // Version 1
+        mrStream.WriteUInt16(sal_uInt16(rGfxLink.GetType()));
+        mrStream.WriteUInt32(rGfxLink.GetDataSize());
+        mrStream.WriteUInt32(rGfxLink.GetUserId());
+
+        // Version 2
+        writeSize(rGfxLink.GetPrefSize());
+        writeMapMode(rGfxLink.GetPrefMapMode());
+    }
+
+    if (rGfxLink.GetDataSize())
+    {
+        if (rGfxLink.GetData())
+            mrStream.WriteBytes(rGfxLink.GetData(), rGfxLink.GetDataSize());
+    }
+}
+
+namespace
+{
+#define NATIVE_FORMAT_50 COMPAT_FORMAT('N', 'A', 'T', '5')
+
+} // end anonymous namespace
+
+void TypeSerializer::readGraphic(Graphic& rGraphic)
+{
+    if (mrStream.GetError())
+        return;
+
+    const sal_uInt64 nInitialStreamPosition = mrStream.Tell();
+    sal_uInt32 nType;
+
+    // if there is no more data, avoid further expensive
+    // reading which will create VDevs and other stuff, just to
+    // read nothing.
+    if (mrStream.remainingSize() < 4)
+        return;
+
+    // read Id
+    mrStream.ReadUInt32(nType);
+
+    if (NATIVE_FORMAT_50 == nType)
+    {
+        Graphic aGraphic;
+        GfxLink aLink;
+
+        // read compat info, destructor writes stuff into the header
+        {
+            VersionCompatRead aCompat(mrStream);
+        }
+
+        readGfxLink(aLink);
+
+        if (!mrStream.GetError() && aLink.LoadNative(aGraphic))
+        {
+            if (aLink.IsPrefMapModeValid())
+                aGraphic.SetPrefMapMode(aLink.GetPrefMapMode());
+
+            if (aLink.IsPrefSizeValid())
+                aGraphic.SetPrefSize(aLink.GetPrefSize());
+        }
+        else
+        {
+            mrStream.Seek(nInitialStreamPosition);
+            mrStream.SetError(ERRCODE_IO_WRONGFORMAT);
+        }
+        rGraphic = aGraphic;
+    }
+    else
+    {
+        BitmapEx aBitmapEx;
+        const SvStreamEndian nOldFormat = mrStream.GetEndian();
+
+        mrStream.SeekRel(-4);
+        mrStream.SetEndian(SvStreamEndian::LITTLE);
+        ReadDIBBitmapEx(aBitmapEx, mrStream);
+
+        if (!mrStream.GetError())
+        {
+            sal_uInt32 nMagic1 = 0;
+            sal_uInt32 nMagic2 = 0;
+            if (mrStream.remainingSize() >= 8)
+            {
+                sal_uInt64 nBeginPosition = mrStream.Tell();
+                mrStream.ReadUInt32(nMagic1);
+                mrStream.ReadUInt32(nMagic2);
+                mrStream.Seek(nBeginPosition);
+            }
+            if (!mrStream.GetError())
+            {
+                if (nMagic1 == 0x5344414e && nMagic2 == 0x494d4931)
+                {
+                    Animation aAnimation;
+                    ReadAnimation(mrStream, aAnimation);
+
+                    // #108077# manually set loaded BmpEx to Animation
+                    // (which skips loading its BmpEx if already done)
+                    aAnimation.SetBitmapEx(aBitmapEx);
+                    rGraphic = Graphic(aAnimation);
+                }
+                else
+                {
+                    rGraphic = Graphic(aBitmapEx);
+                }
+            }
+            else
+            {
+                mrStream.ResetError();
+            }
+        }
+        else
+        {
+            GDIMetaFile aMetaFile;
+
+            mrStream.Seek(nInitialStreamPosition);
+            mrStream.ResetError();
+            SvmReader aReader(mrStream);
+            aReader.Read(aMetaFile);
+
+            if (!mrStream.GetError())
+            {
+                rGraphic = Graphic(aMetaFile);
+            }
+            else
+            {
+                ErrCode nOriginalError = mrStream.GetErrorCode();
+                // try to stream in Svg defining data (length, byte array and evtl. path)
+                // See below (operator<<) for more information
+                sal_uInt32 nMagic;
+                mrStream.Seek(nInitialStreamPosition);
+                mrStream.ResetError();
+                mrStream.ReadUInt32(nMagic);
+
+                if (constSvgMagic == nMagic || constWmfMagic == nMagic || constEmfMagic == nMagic
+                    || constPdfMagic == nMagic)
+                {
+                    sal_uInt32 nLength = 0;
+                    mrStream.ReadUInt32(nLength);
+
+                    if (nLength)
+                    {
+                        auto rData = std::make_unique<std::vector<sal_uInt8>>(nLength);
+                        mrStream.ReadBytes(rData->data(), rData->size());
+                        BinaryDataContainer aDataContainer(std::move(rData));
+
+                        if (!mrStream.GetError())
+                        {
+                            VectorGraphicDataType aDataType(VectorGraphicDataType::Svg);
+
+                            switch (nMagic)
+                            {
+                                case constWmfMagic:
+                                    aDataType = VectorGraphicDataType::Wmf;
+                                    break;
+                                case constEmfMagic:
+                                    aDataType = VectorGraphicDataType::Emf;
+                                    break;
+                                case constPdfMagic:
+                                    aDataType = VectorGraphicDataType::Pdf;
+                                    break;
+                            }
+
+                            auto aVectorGraphicDataPtr
+                                = std::make_shared<VectorGraphicData>(aDataContainer, aDataType);
+                            rGraphic = Graphic(aVectorGraphicDataPtr);
+                        }
+                    }
+                }
+                else
+                {
+                    mrStream.SetError(nOriginalError);
+                }
+
+                mrStream.Seek(nInitialStreamPosition);
+            }
+        }
+        mrStream.SetEndian(nOldFormat);
+    }
+}
+
+void TypeSerializer::writeGraphic(const Graphic& rGraphic)
+{
+    Graphic aGraphic(rGraphic);
+
+    if (!aGraphic.makeAvailable())
+        return;
+
+    auto pGfxLink = aGraphic.GetSharedGfxLink();
+
+    if (mrStream.GetVersion() >= SOFFICE_FILEFORMAT_50
+        && (mrStream.GetCompressMode() & SvStreamCompressFlags::NATIVE) && pGfxLink
+        && pGfxLink->IsNative())
+    {
+        // native format
+        mrStream.WriteUInt32(NATIVE_FORMAT_50);
+
+        // write compat info, destructor writes stuff into the header
+        {
+            VersionCompatWrite aCompat(mrStream, 1);
+        }
+        pGfxLink->SetPrefMapMode(aGraphic.GetPrefMapMode());
+        pGfxLink->SetPrefSize(aGraphic.GetPrefSize());
+        writeGfxLink(*pGfxLink);
+    }
+    else
+    {
+        // own format
+        const SvStreamEndian nOldFormat = mrStream.GetEndian();
+        mrStream.SetEndian(SvStreamEndian::LITTLE);
+
+        switch (aGraphic.GetType())
+        {
+            case GraphicType::NONE:
+            case GraphicType::Default:
+                break;
+
+            case GraphicType::Bitmap:
+            {
+                auto pVectorGraphicData = aGraphic.getVectorGraphicData();
+                if (pVectorGraphicData)
+                {
+                    // stream out Vector Graphic defining data (length, byte array and evtl. path)
+                    // this is used e.g. in swapping out graphic data and in transporting it over UNO API
+                    // as sequence of bytes, but AFAIK not written anywhere to any kind of file, so it should be
+                    // no problem to extend it; only used at runtime
+                    switch (pVectorGraphicData->getType())
+                    {
+                        case VectorGraphicDataType::Wmf:
+                        {
+                            mrStream.WriteUInt32(constWmfMagic);
+                            break;
+                        }
+                        case VectorGraphicDataType::Emf:
+                        {
+                            mrStream.WriteUInt32(constEmfMagic);
+                            break;
+                        }
+                        case VectorGraphicDataType::Svg:
+                        {
+                            mrStream.WriteUInt32(constSvgMagic);
+                            break;
+                        }
+                        case VectorGraphicDataType::Pdf:
+                        {
+                            mrStream.WriteUInt32(constPdfMagic);
+                            break;
+                        }
+                    }
+
+                    sal_uInt32 nSize = pVectorGraphicData->getBinaryDataContainer().getSize();
+                    mrStream.WriteUInt32(nSize);
+                    mrStream.WriteBytes(pVectorGraphicData->getBinaryDataContainer().getData(),
+                                        nSize);
+                    // For backwards compatibility, used to serialize path
+                    mrStream.WriteUniOrByteString(u"", mrStream.GetStreamCharSet());
+                }
+                else if (aGraphic.IsAnimated())
+                {
+                    WriteAnimation(mrStream, aGraphic.GetAnimation());
+                }
+                else
+                {
+                    WriteDIBBitmapEx(aGraphic.GetBitmapEx(), mrStream);
+                }
+            }
+            break;
+
+            default:
+            {
+                if (aGraphic.IsSupportedGraphic())
+                {
+                    if (!mrStream.GetError())
+                    {
+                        SvmWriter aWriter(mrStream);
+                        aWriter.Write(rGraphic.GetGDIMetaFile());
+                    }
+                }
+            }
+            break;
+        }
+        mrStream.SetEndian(nOldFormat);
+    }
+}
+
+bool TooLargeScaleForMapMode(const Fraction& rScale, int nDPI)
+{
+    // ImplLogicToPixel will multiply its values by this numerator * dpi and then double that
+    // result before dividing
+    if (rScale.GetNumerator() > std::numeric_limits<sal_Int32>::max() / nDPI / 2)
+        return true;
+    if (rScale.GetNumerator() < std::numeric_limits<sal_Int32>::min() / nDPI / 2)
+        return true;
+    return false;
+}
+
+static bool UselessScaleForMapMode(const Fraction& rScale)
+{
+    if (!rScale.IsValid())
+        return true;
+    if (TooLargeScaleForMapMode(rScale, 96))
+        return true;
+    if (static_cast<double>(rScale) < 0.0)
+        return true;
+    return false;
+}
+
+void TypeSerializer::readMapMode(MapMode& rMapMode)
+{
+    VersionCompatRead aCompat(mrStream);
+    sal_uInt16 nTmp16(0);
+    Point aOrigin;
+    Fraction aScaleX;
+    Fraction aScaleY;
+    bool bSimple(true);
+
+    mrStream.ReadUInt16(nTmp16);
+    MapUnit eUnit = static_cast<MapUnit>(nTmp16);
+    readPoint(aOrigin);
+    readFraction(aScaleX);
+    readFraction(aScaleY);
+    mrStream.ReadCharAsBool(bSimple);
+
+    const bool bBogus = UselessScaleForMapMode(aScaleX) || UselessScaleForMapMode(aScaleY);
+    SAL_WARN_IF(bBogus, "vcl", "invalid scale");
+
+    if (bSimple || bBogus)
+        rMapMode = MapMode(eUnit);
+    else
+        rMapMode = MapMode(eUnit, aOrigin, aScaleX, aScaleY);
+}
+
+void TypeSerializer::writeMapMode(MapMode const& rMapMode)
+{
+    VersionCompatWrite aCompat(mrStream, 1);
+
+    mrStream.WriteUInt16(sal_uInt16(rMapMode.GetMapUnit()));
+    writePoint(rMapMode.GetOrigin());
+    writeFraction(rMapMode.GetScaleX());
+    writeFraction(rMapMode.GetScaleY());
+    mrStream.WriteBool(rMapMode.IsSimple());
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */