2 files changed, 731 insertions, 0 deletions

diff --git a/vcl/source/animate/Animation.cxx b/vcl/source/animate/Animation.cxx
new file mode 100644
index 000000000..ae7fc1a21
--- /dev/null
+++ b/vcl/source/animate/Animation.cxx
@@ -0,0 +1,677 @@
+/* -*- 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 <algorithm>
+#include <sal/config.h>
+
+#include <tools/stream.hxx>
+#include <tools/GenericTypeSerializer.hxx>
+#include <sal/log.hxx>
+
+#include <vcl/animate/Animation.hxx>
+#include <vcl/outdev.hxx>
+#include <vcl/dibtools.hxx>
+#include <vcl/BitmapColorQuantizationFilter.hxx>
+
+#include <impanmvw.hxx>
+
+sal_uLong Animation::mnAnimCount = 0;
+
+Animation::Animation()
+    : maTimer("vcl::Animation")
+    , mnLoopCount(0)
+    , mnLoops(0)
+    , mnPos(0)
+    , mbIsInAnimation(false)
+    , mbLoopTerminated(false)
+{
+    maTimer.SetInvokeHandler(LINK(this, Animation, ImplTimeoutHdl));
+}
+
+Animation::Animation(const Animation& rAnimation)
+    : maBitmapEx(rAnimation.maBitmapEx)
+    , maTimer("vcl::Animation")
+    , maGlobalSize(rAnimation.maGlobalSize)
+    , mnLoopCount(rAnimation.mnLoopCount)
+    , mnPos(rAnimation.mnPos)
+    , mbIsInAnimation(false)
+    , mbLoopTerminated(rAnimation.mbLoopTerminated)
+{
+    for (auto const& i : rAnimation.maList)
+        maList.emplace_back(new AnimationBitmap(*i));
+
+    maTimer.SetInvokeHandler(LINK(this, Animation, ImplTimeoutHdl));
+    mnLoops = mbLoopTerminated ? 0 : mnLoopCount;
+}
+
+Animation::~Animation()
+{
+    if (mbIsInAnimation)
+        Stop();
+}
+
+Animation& Animation::operator=(const Animation& rAnimation)
+{
+    if (this != &rAnimation)
+    {
+        Clear();
+
+        for (auto const& i : rAnimation.maList)
+            maList.emplace_back(new AnimationBitmap(*i));
+
+        maGlobalSize = rAnimation.maGlobalSize;
+        maBitmapEx = rAnimation.maBitmapEx;
+        mnLoopCount = rAnimation.mnLoopCount;
+        mnPos = rAnimation.mnPos;
+        mbLoopTerminated = rAnimation.mbLoopTerminated;
+        mnLoops = mbLoopTerminated ? 0 : mnLoopCount;
+    }
+    return *this;
+}
+
+bool Animation::operator==(const Animation& rAnimation) const
+{
+    return maList.size() == rAnimation.maList.size() && maBitmapEx == rAnimation.maBitmapEx
+           && maGlobalSize == rAnimation.maGlobalSize
+           && std::equal(maList.begin(), maList.end(), rAnimation.maList.begin(),
+                         [](const std::unique_ptr<AnimationBitmap>& pAnim1,
+                            const std::unique_ptr<AnimationBitmap>& pAnim2) -> bool {
+                             return *pAnim1 == *pAnim2;
+                         });
+}
+
+void Animation::Clear()
+{
+    maTimer.Stop();
+    mbIsInAnimation = false;
+    maGlobalSize = Size();
+    maBitmapEx.SetEmpty();
+    maList.clear();
+    maViewList.clear();
+}
+
+bool Animation::IsTransparent() const
+{
+    tools::Rectangle aRect{ Point(), maGlobalSize };
+
+    // If some small bitmap needs to be replaced by the background,
+    // we need to be transparent, in order to be displayed correctly
+    // as the application (?) does not invalidate on non-transparent
+    // graphics due to performance reasons.
+
+    return maBitmapEx.IsAlpha()
+           || std::any_of(maList.begin(), maList.end(),
+                          [&aRect](const std::unique_ptr<AnimationBitmap>& pAnim) -> bool {
+                              return pAnim->meDisposal == Disposal::Back
+                                     && tools::Rectangle{ pAnim->maPositionPixel,
+                                                          pAnim->maSizePixel }
+                                            != aRect;
+                          });
+}
+
+sal_uLong Animation::GetSizeBytes() const
+{
+    sal_uLong nSizeBytes = GetBitmapEx().GetSizeBytes();
+
+    for (auto const& pAnimationBitmap : maList)
+    {
+        nSizeBytes += pAnimationBitmap->maBitmapEx.GetSizeBytes();
+    }
+
+    return nSizeBytes;
+}
+
+BitmapChecksum Animation::GetChecksum() const
+{
+    SVBT32 aBT32;
+    BitmapChecksumOctetArray aBCOA;
+    BitmapChecksum nCrc = GetBitmapEx().GetChecksum();
+
+    UInt32ToSVBT32(maList.size(), aBT32);
+    nCrc = vcl_get_checksum(nCrc, aBT32, 4);
+
+    Int32ToSVBT32(maGlobalSize.Width(), aBT32);
+    nCrc = vcl_get_checksum(nCrc, aBT32, 4);
+
+    Int32ToSVBT32(maGlobalSize.Height(), aBT32);
+    nCrc = vcl_get_checksum(nCrc, aBT32, 4);
+
+    for (auto const& i : maList)
+    {
+        BCToBCOA(i->GetChecksum(), aBCOA);
+        nCrc = vcl_get_checksum(nCrc, aBCOA, BITMAP_CHECKSUM_SIZE);
+    }
+
+    return nCrc;
+}
+
+bool Animation::Start(OutputDevice& rOut, const Point& rDestPt, const Size& rDestSz,
+                      tools::Long nExtraData, OutputDevice* pFirstFrameOutDev)
+{
+    bool bRet = false;
+
+    if (!maList.empty())
+    {
+        if ((rOut.GetOutDevType() == OUTDEV_WINDOW) && !mbLoopTerminated
+            && (ANIMATION_TIMEOUT_ON_CLICK != maList[mnPos]->mnWait))
+        {
+            bool differs = true;
+
+            auto itAnimView = std::find_if(
+                maViewList.begin(), maViewList.end(),
+                [&rOut, nExtraData](const std::unique_ptr<ImplAnimView>& pAnimView) -> bool {
+                    return pAnimView->matches(&rOut, nExtraData);
+                });
+
+            if (itAnimView != maViewList.end())
+            {
+                if ((*itAnimView)->getOutPos() == rDestPt
+                    && (*itAnimView)->getOutSizePix() == rOut.LogicToPixel(rDestSz))
+                {
+                    (*itAnimView)->repaint();
+                    differs = false;
+                }
+                else
+                    maViewList.erase(itAnimView);
+            }
+
+            if (maViewList.empty())
+            {
+                maTimer.Stop();
+                mbIsInAnimation = false;
+                mnPos = 0;
+            }
+
+            if (differs)
+                maViewList.emplace_back(
+                    new ImplAnimView(this, &rOut, rDestPt, rDestSz, nExtraData, pFirstFrameOutDev));
+
+            if (!mbIsInAnimation)
+            {
+                ImplRestartTimer(maList[mnPos]->mnWait);
+                mbIsInAnimation = true;
+            }
+        }
+        else
+            Draw(rOut, rDestPt, rDestSz);
+
+        bRet = true;
+    }
+
+    return bRet;
+}
+
+void Animation::Stop(const OutputDevice* pOut, tools::Long nExtraData)
+{
+    maViewList.erase(std::remove_if(maViewList.begin(), maViewList.end(),
+                                    [=](const std::unique_ptr<ImplAnimView>& pAnimView) -> bool {
+                                        return pAnimView->matches(pOut, nExtraData);
+                                    }),
+                     maViewList.end());
+
+    if (maViewList.empty())
+    {
+        maTimer.Stop();
+        mbIsInAnimation = false;
+    }
+}
+
+void Animation::Draw(OutputDevice& rOut, const Point& rDestPt) const
+{
+    Draw(rOut, rDestPt, rOut.PixelToLogic(maGlobalSize));
+}
+
+void Animation::Draw(OutputDevice& rOut, const Point& rDestPt, const Size& rDestSz) const
+{
+    const size_t nCount = maList.size();
+
+    if (!nCount)
+        return;
+
+    AnimationBitmap* pObj = maList[std::min(mnPos, nCount - 1)].get();
+
+    if (rOut.GetConnectMetaFile() || (rOut.GetOutDevType() == OUTDEV_PRINTER))
+        maList[0]->maBitmapEx.Draw(&rOut, rDestPt, rDestSz);
+    else if (ANIMATION_TIMEOUT_ON_CLICK == pObj->mnWait)
+        pObj->maBitmapEx.Draw(&rOut, rDestPt, rDestSz);
+    else
+    {
+        const size_t nOldPos = mnPos;
+        if (mbLoopTerminated)
+            const_cast<Animation*>(this)->mnPos = nCount - 1;
+
+        {
+            ImplAnimView{ const_cast<Animation*>(this), &rOut, rDestPt, rDestSz, 0 };
+        }
+
+        const_cast<Animation*>(this)->mnPos = nOldPos;
+    }
+}
+
+namespace
+{
+constexpr sal_uLong constMinTimeout = 2;
+}
+
+void Animation::ImplRestartTimer(sal_uLong nTimeout)
+{
+    maTimer.SetTimeout(std::max(nTimeout, constMinTimeout) * 10);
+    maTimer.Start();
+}
+
+IMPL_LINK_NOARG(Animation, ImplTimeoutHdl, Timer*, void)
+{
+    const size_t nAnimCount = maList.size();
+
+    if (nAnimCount)
+    {
+        bool bGlobalPause = false;
+
+        if (maNotifyLink.IsSet())
+        {
+            std::vector<std::unique_ptr<AInfo>> aAInfoList;
+            // create AInfo-List
+            for (auto const& i : maViewList)
+                aAInfoList.emplace_back(i->createAInfo());
+
+            maNotifyLink.Call(this);
+
+            // set view state from AInfo structure
+            for (auto& pAInfo : aAInfoList)
+            {
+                ImplAnimView* pView = nullptr;
+                if (!pAInfo->pViewData)
+                {
+                    pView = new ImplAnimView(this, pAInfo->pOutDev, pAInfo->aStartOrg,
+                                             pAInfo->aStartSize, pAInfo->nExtraData);
+
+                    maViewList.push_back(std::unique_ptr<ImplAnimView>(pView));
+                }
+                else
+                    pView = static_cast<ImplAnimView*>(pAInfo->pViewData);
+
+                pView->pause(pAInfo->bPause);
+                pView->setMarked(true);
+            }
+
+            // delete all unmarked views
+            auto removeStart = std::remove_if(maViewList.begin(), maViewList.end(),
+                                              [](const auto& pView) { return !pView->isMarked(); });
+            maViewList.erase(removeStart, maViewList.cend());
+
+            // check if every remaining view is paused
+            bGlobalPause = std::all_of(maViewList.cbegin(), maViewList.cend(),
+                                       [](const auto& pView) { return pView->isPause(); });
+
+            // reset marked state
+            std::for_each(maViewList.cbegin(), maViewList.cend(),
+                          [](const auto& pView) { pView->setMarked(false); });
+        }
+
+        if (maViewList.empty())
+            Stop();
+        else if (bGlobalPause)
+            ImplRestartTimer(10);
+        else
+        {
+            AnimationBitmap* pStepBmp = (++mnPos < maList.size()) ? maList[mnPos].get() : nullptr;
+
+            if (!pStepBmp)
+            {
+                if (mnLoops == 1)
+                {
+                    Stop();
+                    mbLoopTerminated = true;
+                    mnPos = nAnimCount - 1;
+                    maBitmapEx = maList[mnPos]->maBitmapEx;
+                    return;
+                }
+                else
+                {
+                    if (mnLoops)
+                        mnLoops--;
+
+                    mnPos = 0;
+                    pStepBmp = maList[mnPos].get();
+                }
+            }
+
+            // Paint all views.
+            std::for_each(maViewList.cbegin(), maViewList.cend(),
+                          [this](const auto& pView) { pView->draw(mnPos); });
+            /*
+             * If a view is marked, remove the view, because
+             * area of output lies out of display area of window.
+             * Mark state is set from view itself.
+             */
+            auto removeStart = std::remove_if(maViewList.begin(), maViewList.end(),
+                                              [](const auto& pView) { return pView->isMarked(); });
+            maViewList.erase(removeStart, maViewList.cend());
+
+            // stop or restart timer
+            if (maViewList.empty())
+                Stop();
+            else
+                ImplRestartTimer(pStepBmp->mnWait);
+        }
+    }
+    else
+        Stop();
+}
+
+bool Animation::Insert(const AnimationBitmap& rStepBmp)
+{
+    bool bRet = false;
+
+    if (!IsInAnimation())
+    {
+        tools::Rectangle aGlobalRect(Point(), maGlobalSize);
+
+        maGlobalSize
+            = aGlobalRect.Union(tools::Rectangle(rStepBmp.maPositionPixel, rStepBmp.maSizePixel))
+                  .GetSize();
+        maList.emplace_back(new AnimationBitmap(rStepBmp));
+
+        // As a start, we make the first BitmapEx the replacement BitmapEx
+        if (maList.size() == 1)
+            maBitmapEx = rStepBmp.maBitmapEx;
+
+        bRet = true;
+    }
+
+    return bRet;
+}
+
+const AnimationBitmap& Animation::Get(sal_uInt16 nAnimation) const
+{
+    SAL_WARN_IF((nAnimation >= maList.size()), "vcl", "No object at this position");
+    return *maList[nAnimation];
+}
+
+void Animation::Replace(const AnimationBitmap& rNewAnimationBitmap, sal_uInt16 nAnimation)
+{
+    SAL_WARN_IF((nAnimation >= maList.size()), "vcl", "No object at this position");
+
+    maList[nAnimation].reset(new AnimationBitmap(rNewAnimationBitmap));
+
+    // If we insert at first position we also need to
+    // update the replacement BitmapEx
+    if ((!nAnimation && (!mbLoopTerminated || (maList.size() == 1)))
+        || ((nAnimation == maList.size() - 1) && mbLoopTerminated))
+    {
+        maBitmapEx = rNewAnimationBitmap.maBitmapEx;
+    }
+}
+
+void Animation::SetLoopCount(const sal_uInt32 nLoopCount)
+{
+    mnLoopCount = nLoopCount;
+    ResetLoopCount();
+}
+
+void Animation::ResetLoopCount()
+{
+    mnLoops = mnLoopCount;
+    mbLoopTerminated = false;
+}
+
+void Animation::Convert(BmpConversion eConversion)
+{
+    SAL_WARN_IF(IsInAnimation(), "vcl", "Animation modified while it is animated");
+
+    bool bRet;
+
+    if (!IsInAnimation() && !maList.empty())
+    {
+        bRet = true;
+
+        for (size_t i = 0, n = maList.size(); (i < n) && bRet; ++i)
+            bRet = maList[i]->maBitmapEx.Convert(eConversion);
+
+        maBitmapEx.Convert(eConversion);
+    }
+}
+
+bool Animation::ReduceColors(sal_uInt16 nNewColorCount)
+{
+    SAL_WARN_IF(IsInAnimation(), "vcl", "Animation modified while it is animated");
+
+    bool bRet;
+
+    if (!IsInAnimation() && !maList.empty())
+    {
+        bRet = true;
+
+        for (size_t i = 0, n = maList.size(); (i < n) && bRet; ++i)
+        {
+            bRet = BitmapFilter::Filter(maList[i]->maBitmapEx,
+                                        BitmapColorQuantizationFilter(nNewColorCount));
+        }
+
+        BitmapFilter::Filter(maBitmapEx, BitmapColorQuantizationFilter(nNewColorCount));
+    }
+    else
+    {
+        bRet = false;
+    }
+
+    return bRet;
+}
+
+bool Animation::Invert()
+{
+    SAL_WARN_IF(IsInAnimation(), "vcl", "Animation modified while it is animated");
+
+    bool bRet;
+
+    if (!IsInAnimation() && !maList.empty())
+    {
+        bRet = true;
+
+        for (size_t i = 0, n = maList.size(); (i < n) && bRet; ++i)
+            bRet = maList[i]->maBitmapEx.Invert();
+
+        maBitmapEx.Invert();
+    }
+    else
+        bRet = false;
+
+    return bRet;
+}
+
+void Animation::Mirror(BmpMirrorFlags nMirrorFlags)
+{
+    SAL_WARN_IF(IsInAnimation(), "vcl", "Animation modified while it is animated");
+
+    bool bRet;
+
+    if (IsInAnimation() || maList.empty())
+        return;
+
+    bRet = true;
+
+    if (nMirrorFlags == BmpMirrorFlags::NONE)
+        return;
+
+    for (size_t i = 0, n = maList.size(); (i < n) && bRet; ++i)
+    {
+        AnimationBitmap* pStepBmp = maList[i].get();
+        bRet = pStepBmp->maBitmapEx.Mirror(nMirrorFlags);
+        if (bRet)
+        {
+            if (nMirrorFlags & BmpMirrorFlags::Horizontal)
+                pStepBmp->maPositionPixel.setX(maGlobalSize.Width() - pStepBmp->maPositionPixel.X()
+                                               - pStepBmp->maSizePixel.Width());
+
+            if (nMirrorFlags & BmpMirrorFlags::Vertical)
+                pStepBmp->maPositionPixel.setY(maGlobalSize.Height() - pStepBmp->maPositionPixel.Y()
+                                               - pStepBmp->maSizePixel.Height());
+        }
+    }
+
+    maBitmapEx.Mirror(nMirrorFlags);
+}
+
+void Animation::Adjust(short nLuminancePercent, short nContrastPercent, short nChannelRPercent,
+                       short nChannelGPercent, short nChannelBPercent, double fGamma, bool bInvert)
+{
+    SAL_WARN_IF(IsInAnimation(), "vcl", "Animation modified while it is animated");
+
+    bool bRet;
+
+    if (IsInAnimation() || maList.empty())
+        return;
+
+    bRet = true;
+
+    for (size_t i = 0, n = maList.size(); (i < n) && bRet; ++i)
+    {
+        bRet = maList[i]->maBitmapEx.Adjust(nLuminancePercent, nContrastPercent, nChannelRPercent,
+                                            nChannelGPercent, nChannelBPercent, fGamma, bInvert);
+    }
+
+    maBitmapEx.Adjust(nLuminancePercent, nContrastPercent, nChannelRPercent, nChannelGPercent,
+                      nChannelBPercent, fGamma, bInvert);
+}
+
+SvStream& WriteAnimation(SvStream& rOStm, const Animation& rAnimation)
+{
+    const sal_uInt16 nCount = rAnimation.Count();
+
+    if (nCount)
+    {
+        const sal_uInt32 nDummy32 = 0;
+
+        // If no BitmapEx was set we write the first Bitmap of
+        // the Animation
+        if (rAnimation.GetBitmapEx().GetBitmap().IsEmpty())
+            WriteDIBBitmapEx(rAnimation.Get(0).maBitmapEx, rOStm);
+        else
+            WriteDIBBitmapEx(rAnimation.GetBitmapEx(), rOStm);
+
+        // Write identifier ( SDANIMA1 )
+        rOStm.WriteUInt32(0x5344414e).WriteUInt32(0x494d4931);
+
+        for (sal_uInt16 i = 0; i < nCount; i++)
+        {
+            const AnimationBitmap& rAnimationBitmap = rAnimation.Get(i);
+            const sal_uInt16 nRest = nCount - i - 1;
+
+            // Write AnimationBitmap
+            WriteDIBBitmapEx(rAnimationBitmap.maBitmapEx, rOStm);
+            tools::GenericTypeSerializer aSerializer(rOStm);
+            aSerializer.writePoint(rAnimationBitmap.maPositionPixel);
+            aSerializer.writeSize(rAnimationBitmap.maSizePixel);
+            aSerializer.writeSize(rAnimation.maGlobalSize);
+            rOStm.WriteUInt16((ANIMATION_TIMEOUT_ON_CLICK == rAnimationBitmap.mnWait)
+                                  ? 65535
+                                  : rAnimationBitmap.mnWait);
+            rOStm.WriteUInt16(static_cast<sal_uInt16>(rAnimationBitmap.meDisposal));
+            rOStm.WriteBool(rAnimationBitmap.mbUserInput);
+            rOStm.WriteUInt32(rAnimation.mnLoopCount);
+            rOStm.WriteUInt32(nDummy32); // Unused
+            rOStm.WriteUInt32(nDummy32); // Unused
+            rOStm.WriteUInt32(nDummy32); // Unused
+            write_uInt16_lenPrefixed_uInt8s_FromOString(rOStm, ""); // dummy
+            rOStm.WriteUInt16(nRest); // Count of remaining structures
+        }
+    }
+
+    return rOStm;
+}
+
+SvStream& ReadAnimation(SvStream& rIStm, Animation& rAnimation)
+{
+    sal_uLong nStmPos;
+    sal_uInt32 nAnimMagic1, nAnimMagic2;
+    SvStreamEndian nOldFormat = rIStm.GetEndian();
+    bool bReadAnimations = false;
+
+    rIStm.SetEndian(SvStreamEndian::LITTLE);
+    nStmPos = rIStm.Tell();
+    rIStm.ReadUInt32(nAnimMagic1).ReadUInt32(nAnimMagic2);
+
+    rAnimation.Clear();
+
+    // If the BitmapEx at the beginning have already been read (by Graphic)
+    // we can start reading the AnimationBitmaps right away
+    if ((nAnimMagic1 == 0x5344414e) && (nAnimMagic2 == 0x494d4931) && !rIStm.GetError())
+        bReadAnimations = true;
+    // Else, we try reading the Bitmap(-Ex)
+    else
+    {
+        rIStm.Seek(nStmPos);
+        ReadDIBBitmapEx(rAnimation.maBitmapEx, rIStm);
+        nStmPos = rIStm.Tell();
+        rIStm.ReadUInt32(nAnimMagic1).ReadUInt32(nAnimMagic2);
+
+        if ((nAnimMagic1 == 0x5344414e) && (nAnimMagic2 == 0x494d4931) && !rIStm.GetError())
+            bReadAnimations = true;
+        else
+            rIStm.Seek(nStmPos);
+    }
+
+    // Read AnimationBitmaps
+    if (bReadAnimations)
+    {
+        AnimationBitmap aAnimationBitmap;
+        sal_uInt32 nTmp32;
+        sal_uInt16 nTmp16;
+        bool cTmp;
+
+        do
+        {
+            ReadDIBBitmapEx(aAnimationBitmap.maBitmapEx, rIStm);
+            tools::GenericTypeSerializer aSerializer(rIStm);
+            aSerializer.readPoint(aAnimationBitmap.maPositionPixel);
+            aSerializer.readSize(aAnimationBitmap.maSizePixel);
+            aSerializer.readSize(rAnimation.maGlobalSize);
+            rIStm.ReadUInt16(nTmp16);
+            aAnimationBitmap.mnWait = ((65535 == nTmp16) ? ANIMATION_TIMEOUT_ON_CLICK : nTmp16);
+            rIStm.ReadUInt16(nTmp16);
+            aAnimationBitmap.meDisposal = static_cast<Disposal>(nTmp16);
+            rIStm.ReadCharAsBool(cTmp);
+            aAnimationBitmap.mbUserInput = cTmp;
+            rIStm.ReadUInt32(rAnimation.mnLoopCount);
+            rIStm.ReadUInt32(nTmp32); // Unused
+            rIStm.ReadUInt32(nTmp32); // Unused
+            rIStm.ReadUInt32(nTmp32); // Unused
+            read_uInt16_lenPrefixed_uInt8s_ToOString(rIStm); // Unused
+            rIStm.ReadUInt16(nTmp16); // The rest to read
+
+            rAnimation.Insert(aAnimationBitmap);
+        } while (nTmp16 && !rIStm.GetError());
+
+        rAnimation.ResetLoopCount();
+    }
+
+    rIStm.SetEndian(nOldFormat);
+
+    return rIStm;
+}
+
+AInfo::AInfo()
+    : pOutDev(nullptr)
+    , pViewData(nullptr)
+    , nExtraData(0)
+    , bPause(false)
+{
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/source/animate/AnimationBitmap.cxx b/vcl/source/animate/AnimationBitmap.cxx
new file mode 100644
index 000000000..8dfb466e1
--- /dev/null
+++ b/vcl/source/animate/AnimationBitmap.cxx
@@ -0,0 +1,54 @@
+/* -*- 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/config.h>
+#include <o3tl/underlyingenumvalue.hxx>
+#include <tools/solar.h>
+#include <vcl/animate/AnimationBitmap.hxx>
+
+BitmapChecksum AnimationBitmap::GetChecksum() const
+{
+    BitmapChecksum nCrc = maBitmapEx.GetChecksum();
+    SVBT32 aBT32;
+
+    Int32ToSVBT32(maPositionPixel.X(), aBT32);
+    nCrc = vcl_get_checksum(nCrc, aBT32, 4);
+
+    Int32ToSVBT32(maPositionPixel.Y(), aBT32);
+    nCrc = vcl_get_checksum(nCrc, aBT32, 4);
+
+    Int32ToSVBT32(maSizePixel.Width(), aBT32);
+    nCrc = vcl_get_checksum(nCrc, aBT32, 4);
+
+    Int32ToSVBT32(maSizePixel.Height(), aBT32);
+    nCrc = vcl_get_checksum(nCrc, aBT32, 4);
+
+    Int32ToSVBT32(mnWait, aBT32);
+    nCrc = vcl_get_checksum(nCrc, aBT32, 4);
+
+    UInt32ToSVBT32(o3tl::to_underlying(meDisposal), aBT32);
+    nCrc = vcl_get_checksum(nCrc, aBT32, 4);
+
+    UInt32ToSVBT32(sal_uInt32(mbUserInput), aBT32);
+    nCrc = vcl_get_checksum(nCrc, aBT32, 4);
+
+    return nCrc;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */