3 files changed, 1090 insertions, 0 deletions

diff --git a/vcl/source/animate/Animation.cxx b/vcl/source/animate/Animation.cxx
new file mode 100644
index 0000000000..daa9e1f1be
--- /dev/null
+++ b/vcl/source/animate/Animation.cxx
@@ -0,0 +1,706 @@
+/* -*- 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 <rtl/crc.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 <animate/AnimationRenderer.hxx>
+
+sal_uLong Animation::gAnimationRendererCount = 0;
+
+Animation::Animation()
+    : maTimer("vcl::Animation")
+    , mnLoopCount(0)
+    , mnLoops(0)
+    , mnFrameIndex(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)
+    , mnFrameIndex(rAnimation.mnFrameIndex)
+    , mbIsInAnimation(false)
+    , mbLoopTerminated(rAnimation.mbLoopTerminated)
+{
+    for (auto const& rFrame : rAnimation.maFrames)
+        maFrames.emplace_back(new AnimationFrame(*rFrame));
+
+    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.maFrames)
+            maFrames.emplace_back(new AnimationFrame(*i));
+
+        maGlobalSize = rAnimation.maGlobalSize;
+        maBitmapEx = rAnimation.maBitmapEx;
+        mnLoopCount = rAnimation.mnLoopCount;
+        mnFrameIndex = rAnimation.mnFrameIndex;
+        mbLoopTerminated = rAnimation.mbLoopTerminated;
+        mnLoops = mbLoopTerminated ? 0 : mnLoopCount;
+    }
+    return *this;
+}
+
+bool Animation::operator==(const Animation& rAnimation) const
+{
+    return maFrames.size() == rAnimation.maFrames.size() && maBitmapEx == rAnimation.maBitmapEx
+           && maGlobalSize == rAnimation.maGlobalSize
+           && std::equal(maFrames.begin(), maFrames.end(), rAnimation.maFrames.begin(),
+                         [](const std::unique_ptr<AnimationFrame>& pAnim1,
+                            const std::unique_ptr<AnimationFrame>& pAnim2) -> bool {
+                             return *pAnim1 == *pAnim2;
+                         });
+}
+
+void Animation::Clear()
+{
+    maTimer.Stop();
+    mbIsInAnimation = false;
+    maGlobalSize = Size();
+    maBitmapEx.SetEmpty();
+    maFrames.clear();
+    maRenderers.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(maFrames.begin(), maFrames.end(),
+                          [&aRect](const std::unique_ptr<AnimationFrame>& 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& pAnimationFrame : maFrames)
+    {
+        nSizeBytes += pAnimationFrame->maBitmapEx.GetSizeBytes();
+    }
+
+    return nSizeBytes;
+}
+
+BitmapChecksum Animation::GetChecksum() const
+{
+    SVBT32 aBT32;
+    BitmapChecksumOctetArray aBCOA;
+    BitmapChecksum nCrc = GetBitmapEx().GetChecksum();
+
+    UInt32ToSVBT32(maFrames.size(), aBT32);
+    nCrc = rtl_crc32(nCrc, aBT32, 4);
+
+    Int32ToSVBT32(maGlobalSize.Width(), aBT32);
+    nCrc = rtl_crc32(nCrc, aBT32, 4);
+
+    Int32ToSVBT32(maGlobalSize.Height(), aBT32);
+    nCrc = rtl_crc32(nCrc, aBT32, 4);
+
+    for (auto const& i : maFrames)
+    {
+        BCToBCOA(i->GetChecksum(), aBCOA);
+        nCrc = rtl_crc32(nCrc, aBCOA, BITMAP_CHECKSUM_SIZE);
+    }
+
+    return nCrc;
+}
+
+bool Animation::Start(OutputDevice& rOut, const Point& rDestPt, const Size& rDestSz,
+                      tools::Long nRendererId, OutputDevice* pFirstFrameOutDev)
+{
+    bool bRet = false;
+
+    if (!maFrames.empty())
+    {
+        if ((rOut.GetOutDevType() == OUTDEV_WINDOW) && !mbLoopTerminated
+            && (ANIMATION_TIMEOUT_ON_CLICK != maFrames[mnFrameIndex]->mnWait))
+        {
+            bool differs = true;
+
+            auto itAnimView = std::find_if(
+                maRenderers.begin(), maRenderers.end(),
+                [&rOut, nRendererId](const std::unique_ptr<AnimationRenderer>& pRenderer) -> bool {
+                    return pRenderer->matches(&rOut, nRendererId);
+                });
+
+            if (itAnimView != maRenderers.end())
+            {
+                if ((*itAnimView)->getOriginPosition() == rDestPt
+                    && (*itAnimView)->getOutSizePix() == rOut.LogicToPixel(rDestSz))
+                {
+                    (*itAnimView)->repaint();
+                    differs = false;
+                }
+                else
+                {
+                    maRenderers.erase(itAnimView);
+                }
+            }
+
+            if (maRenderers.empty())
+            {
+                maTimer.Stop();
+                mbIsInAnimation = false;
+                mnFrameIndex = 0;
+            }
+
+            if (differs)
+                maRenderers.emplace_back(new AnimationRenderer(this, &rOut, rDestPt, rDestSz,
+                                                               nRendererId, pFirstFrameOutDev));
+
+            if (!mbIsInAnimation)
+            {
+                ImplRestartTimer(maFrames[mnFrameIndex]->mnWait);
+                mbIsInAnimation = true;
+            }
+        }
+        else
+            Draw(rOut, rDestPt, rDestSz);
+
+        bRet = true;
+    }
+
+    return bRet;
+}
+
+void Animation::Stop(const OutputDevice* pOut, tools::Long nRendererId)
+{
+    std::erase_if(maRenderers, [=](const std::unique_ptr<AnimationRenderer>& pRenderer) -> bool {
+        return pRenderer->matches(pOut, nRendererId);
+    });
+
+    if (maRenderers.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 = maFrames.size();
+
+    if (!nCount)
+        return;
+
+    AnimationFrame* pObj = maFrames[std::min(mnFrameIndex, nCount - 1)].get();
+
+    if (rOut.GetConnectMetaFile() || (rOut.GetOutDevType() == OUTDEV_PRINTER))
+    {
+        maFrames[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 = mnFrameIndex;
+        if (mbLoopTerminated)
+            const_cast<Animation*>(this)->mnFrameIndex = nCount - 1;
+
+        {
+            AnimationRenderer{ const_cast<Animation*>(this), &rOut, rDestPt, rDestSz, 0 };
+        }
+
+        const_cast<Animation*>(this)->mnFrameIndex = nOldPos;
+    }
+}
+
+namespace
+{
+constexpr sal_uLong constMinTimeout = 2;
+}
+
+void Animation::ImplRestartTimer(sal_uLong nTimeout)
+{
+    maTimer.SetTimeout(std::max(nTimeout, constMinTimeout) * 10);
+    maTimer.Start();
+}
+
+std::vector<std::unique_ptr<AnimationData>> Animation::CreateAnimationDataItems()
+{
+    std::vector<std::unique_ptr<AnimationData>> aDataItems;
+
+    for (auto const& rItem : maRenderers)
+    {
+        aDataItems.emplace_back(rItem->createAnimationData());
+    }
+
+    return aDataItems;
+}
+
+void Animation::PopulateRenderers()
+{
+    for (auto& pDataItem : CreateAnimationDataItems())
+    {
+        AnimationRenderer* pRenderer = nullptr;
+        if (!pDataItem->mpRendererData)
+        {
+            pRenderer = new AnimationRenderer(this, pDataItem->mpRenderContext,
+                                              pDataItem->maOriginStartPt, pDataItem->maStartSize,
+                                              pDataItem->mnRendererId);
+
+            maRenderers.push_back(std::unique_ptr<AnimationRenderer>(pRenderer));
+        }
+        else
+        {
+            pRenderer = pDataItem->mpRendererData;
+        }
+
+        pRenderer->pause(pDataItem->mbIsPaused);
+        pRenderer->setMarked(true);
+    }
+}
+
+void Animation::RenderNextFrameInAllRenderers()
+{
+    AnimationFrame* pCurrentFrameBmp
+        = (++mnFrameIndex < maFrames.size()) ? maFrames[mnFrameIndex].get() : nullptr;
+
+    if (!pCurrentFrameBmp)
+    {
+        if (mnLoops == 1)
+        {
+            Stop();
+            mbLoopTerminated = true;
+            mnFrameIndex = maFrames.size() - 1;
+            maBitmapEx = maFrames[mnFrameIndex]->maBitmapEx;
+            return;
+        }
+        else
+        {
+            if (mnLoops)
+                mnLoops--;
+
+            mnFrameIndex = 0;
+            pCurrentFrameBmp = maFrames[mnFrameIndex].get();
+        }
+    }
+
+    // Paint all views.
+    std::for_each(maRenderers.cbegin(), maRenderers.cend(),
+                  [this](const auto& pRenderer) { pRenderer->draw(mnFrameIndex); });
+    /*
+     * 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.
+     */
+    std::erase_if(maRenderers, [](const auto& pRenderer) { return pRenderer->isMarked(); });
+
+    // stop or restart timer
+    if (maRenderers.empty())
+        Stop();
+    else
+        ImplRestartTimer(pCurrentFrameBmp->mnWait);
+}
+
+void Animation::PruneMarkedRenderers()
+{
+    // delete all unmarked views
+    std::erase_if(maRenderers, [](const auto& pRenderer) { return !pRenderer->isMarked(); });
+
+    // reset marked state
+    std::for_each(maRenderers.cbegin(), maRenderers.cend(),
+                  [](const auto& pRenderer) { pRenderer->setMarked(false); });
+}
+
+bool Animation::IsAnyRendererActive()
+{
+    return std::any_of(maRenderers.cbegin(), maRenderers.cend(),
+                       [](const auto& pRenderer) { return !pRenderer->isPaused(); });
+}
+
+IMPL_LINK_NOARG(Animation, ImplTimeoutHdl, Timer*, void)
+{
+    const size_t nAnimCount = maFrames.size();
+
+    if (nAnimCount)
+    {
+        bool bIsAnyRendererActive = true;
+
+        if (maNotifyLink.IsSet())
+        {
+            maNotifyLink.Call(this);
+            PopulateRenderers();
+            PruneMarkedRenderers();
+            bIsAnyRendererActive = IsAnyRendererActive();
+        }
+
+        if (maRenderers.empty())
+            Stop();
+        else if (!bIsAnyRendererActive)
+            ImplRestartTimer(10);
+        else
+            RenderNextFrameInAllRenderers();
+    }
+    else
+    {
+        Stop();
+    }
+}
+
+bool Animation::Insert(const AnimationFrame& rStepBmp)
+{
+    bool bRet = false;
+
+    if (!IsInAnimation())
+    {
+        tools::Rectangle aGlobalRect(Point(), maGlobalSize);
+
+        maGlobalSize
+            = aGlobalRect.Union(tools::Rectangle(rStepBmp.maPositionPixel, rStepBmp.maSizePixel))
+                  .GetSize();
+        maFrames.emplace_back(new AnimationFrame(rStepBmp));
+
+        // As a start, we make the first BitmapEx the replacement BitmapEx
+        if (maFrames.size() == 1)
+            maBitmapEx = rStepBmp.maBitmapEx;
+
+        bRet = true;
+    }
+
+    return bRet;
+}
+
+const AnimationFrame& Animation::Get(sal_uInt16 nAnimation) const
+{
+    SAL_WARN_IF((nAnimation >= maFrames.size()), "vcl", "No object at this position");
+    return *maFrames[nAnimation];
+}
+
+void Animation::Replace(const AnimationFrame& rNewAnimationFrame, sal_uInt16 nAnimation)
+{
+    SAL_WARN_IF((nAnimation >= maFrames.size()), "vcl", "No object at this position");
+
+    maFrames[nAnimation].reset(new AnimationFrame(rNewAnimationFrame));
+
+    // If we insert at first position we also need to
+    // update the replacement BitmapEx
+    if ((!nAnimation && (!mbLoopTerminated || (maFrames.size() == 1)))
+        || ((nAnimation == maFrames.size() - 1) && mbLoopTerminated))
+    {
+        maBitmapEx = rNewAnimationFrame.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() && !maFrames.empty())
+    {
+        bRet = true;
+
+        for (size_t i = 0, n = maFrames.size(); (i < n) && bRet; ++i)
+            bRet = maFrames[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() && !maFrames.empty())
+    {
+        bRet = true;
+
+        for (size_t i = 0, n = maFrames.size(); (i < n) && bRet; ++i)
+        {
+            bRet = BitmapFilter::Filter(maFrames[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() && !maFrames.empty())
+    {
+        bRet = true;
+
+        for (size_t i = 0, n = maFrames.size(); (i < n) && bRet; ++i)
+            bRet = maFrames[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() || maFrames.empty())
+        return;
+
+    bRet = true;
+
+    if (nMirrorFlags == BmpMirrorFlags::NONE)
+        return;
+
+    for (size_t i = 0, n = maFrames.size(); (i < n) && bRet; ++i)
+    {
+        AnimationFrame* pCurrentFrameBmp = maFrames[i].get();
+        bRet = pCurrentFrameBmp->maBitmapEx.Mirror(nMirrorFlags);
+        if (bRet)
+        {
+            if (nMirrorFlags & BmpMirrorFlags::Horizontal)
+                pCurrentFrameBmp->maPositionPixel.setX(maGlobalSize.Width()
+                                                       - pCurrentFrameBmp->maPositionPixel.X()
+                                                       - pCurrentFrameBmp->maSizePixel.Width());
+
+            if (nMirrorFlags & BmpMirrorFlags::Vertical)
+                pCurrentFrameBmp->maPositionPixel.setY(maGlobalSize.Height()
+                                                       - pCurrentFrameBmp->maPositionPixel.Y()
+                                                       - pCurrentFrameBmp->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() || maFrames.empty())
+        return;
+
+    bRet = true;
+
+    for (size_t i = 0, n = maFrames.size(); (i < n) && bRet; ++i)
+    {
+        bRet = maFrames[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 AnimationFrame& rAnimationFrame = rAnimation.Get(i);
+            const sal_uInt16 nRest = nCount - i - 1;
+
+            // Write AnimationFrame
+            WriteDIBBitmapEx(rAnimationFrame.maBitmapEx, rOStm);
+            tools::GenericTypeSerializer aSerializer(rOStm);
+            aSerializer.writePoint(rAnimationFrame.maPositionPixel);
+            aSerializer.writeSize(rAnimationFrame.maSizePixel);
+            aSerializer.writeSize(rAnimation.maGlobalSize);
+            rOStm.WriteUInt16((ANIMATION_TIMEOUT_ON_CLICK == rAnimationFrame.mnWait)
+                                  ? 65535
+                                  : rAnimationFrame.mnWait);
+            rOStm.WriteUInt16(static_cast<sal_uInt16>(rAnimationFrame.meDisposal));
+            rOStm.WriteBool(rAnimationFrame.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 AnimationFrames 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 AnimationFrames
+    if (bReadAnimations)
+    {
+        AnimationFrame aAnimationFrame;
+        sal_uInt32 nTmp32;
+        sal_uInt16 nTmp16;
+        bool cTmp;
+
+        do
+        {
+            ReadDIBBitmapEx(aAnimationFrame.maBitmapEx, rIStm);
+            tools::GenericTypeSerializer aSerializer(rIStm);
+            aSerializer.readPoint(aAnimationFrame.maPositionPixel);
+            aSerializer.readSize(aAnimationFrame.maSizePixel);
+            aSerializer.readSize(rAnimation.maGlobalSize);
+            rIStm.ReadUInt16(nTmp16);
+            aAnimationFrame.mnWait = ((65535 == nTmp16) ? ANIMATION_TIMEOUT_ON_CLICK : nTmp16);
+            rIStm.ReadUInt16(nTmp16);
+            aAnimationFrame.meDisposal = static_cast<Disposal>(nTmp16);
+            rIStm.ReadCharAsBool(cTmp);
+            aAnimationFrame.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(aAnimationFrame);
+        } while (nTmp16 && !rIStm.GetError());
+
+        rAnimation.ResetLoopCount();
+    }
+
+    rIStm.SetEndian(nOldFormat);
+
+    return rIStm;
+}
+
+AnimationData::AnimationData()
+    : mpRenderContext(nullptr)
+    , mpRendererData(nullptr)
+    , mnRendererId(0)
+    , mbIsPaused(false)
+{
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/source/animate/AnimationFrame.cxx b/vcl/source/animate/AnimationFrame.cxx
new file mode 100644
index 0000000000..697167ebdc
--- /dev/null
+++ b/vcl/source/animate/AnimationFrame.cxx
@@ -0,0 +1,58 @@
+/* -*- 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/AnimationFrame.hxx>
+#include <rtl/crc.h>
+
+BitmapChecksum AnimationFrame::GetChecksum() const
+{
+    BitmapChecksum nCrc = maBitmapEx.GetChecksum();
+    SVBT32 aBT32;
+
+    Int32ToSVBT32(maPositionPixel.X(), aBT32);
+    nCrc = rtl_crc32(nCrc, aBT32, 4);
+
+    Int32ToSVBT32(maPositionPixel.Y(), aBT32);
+    nCrc = rtl_crc32(nCrc, aBT32, 4);
+
+    Int32ToSVBT32(maSizePixel.Width(), aBT32);
+    nCrc = rtl_crc32(nCrc, aBT32, 4);
+
+    Int32ToSVBT32(maSizePixel.Height(), aBT32);
+    nCrc = rtl_crc32(nCrc, aBT32, 4);
+
+    Int32ToSVBT32(mnWait, aBT32);
+    nCrc = rtl_crc32(nCrc, aBT32, 4);
+
+    UInt32ToSVBT32(o3tl::to_underlying(meDisposal), aBT32);
+    nCrc = rtl_crc32(nCrc, aBT32, 4);
+
+    UInt32ToSVBT32(o3tl::to_underlying(meBlend), aBT32);
+    nCrc = rtl_crc32(nCrc, aBT32, 4);
+
+    UInt32ToSVBT32(sal_uInt32(mbUserInput), aBT32);
+    nCrc = rtl_crc32(nCrc, aBT32, 4);
+
+    return nCrc;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/source/animate/AnimationRenderer.cxx b/vcl/source/animate/AnimationRenderer.cxx
new file mode 100644
index 0000000000..29f386e0d3
--- /dev/null
+++ b/vcl/source/animate/AnimationRenderer.cxx
@@ -0,0 +1,326 @@
+/* -*- 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 <memory>
+#include <animate/AnimationRenderer.hxx>
+
+#include <vcl/virdev.hxx>
+#include <vcl/window.hxx>
+#include <tools/helpers.hxx>
+
+#include <window.h>
+
+AnimationRenderer::AnimationRenderer( Animation* pParent, OutputDevice* pOut,
+                            const Point& rPt, const Size& rSz,
+                            sal_uLong nRendererId,
+                            OutputDevice* pFirstFrameOutDev ) :
+        mpParent        ( pParent ),
+        mpRenderContext ( pFirstFrameOutDev ? pFirstFrameOutDev : pOut ),
+        mnRendererId    ( nRendererId ),
+        maOriginPt      ( rPt ),
+        maLogicalSize   ( rSz ),
+        maSizePx        ( mpRenderContext->LogicToPixel( maLogicalSize ) ),
+        maClip          ( mpRenderContext->GetClipRegion() ),
+        mpBackground    ( VclPtr<VirtualDevice>::Create() ),
+        mpRestore       ( VclPtr<VirtualDevice>::Create() ),
+        mnActIndex      ( 0 ),
+        meLastDisposal  ( Disposal::Back ),
+        mbIsPaused      ( false ),
+        mbIsMarked      ( false ),
+        mbIsMirroredHorizontally( maLogicalSize.Width() < 0 ),
+        mbIsMirroredVertically( maLogicalSize.Height() < 0 )
+{
+    Animation::ImplIncAnimCount();
+
+    // Mirrored horizontally?
+    if( mbIsMirroredHorizontally )
+    {
+        maDispPt.setX( maOriginPt.X() + maLogicalSize.Width() + 1 );
+        maDispSz.setWidth( -maLogicalSize.Width() );
+        maSizePx.setWidth( -maSizePx.Width() );
+    }
+    else
+    {
+        maDispPt.setX( maOriginPt.X() );
+        maDispSz.setWidth( maLogicalSize.Width() );
+    }
+
+    // Mirrored vertically?
+    if( mbIsMirroredVertically )
+    {
+        maDispPt.setY( maOriginPt.Y() + maLogicalSize.Height() + 1 );
+        maDispSz.setHeight( -maLogicalSize.Height() );
+        maSizePx.setHeight( -maSizePx.Height() );
+    }
+    else
+    {
+        maDispPt.setY( maOriginPt.Y() );
+        maDispSz.setHeight( maLogicalSize.Height() );
+    }
+
+    // save background
+    mpBackground->SetOutputSizePixel( maSizePx );
+    mpRenderContext->SaveBackground(*mpBackground, maDispPt, maDispSz, maSizePx);
+
+    // Initialize drawing to actual position
+    drawToIndex( mpParent->ImplGetCurPos() );
+
+    // If first frame OutputDevice is set, update variables now for real OutputDevice
+    if( pFirstFrameOutDev )
+    {
+        mpRenderContext = pOut;
+        maClip = mpRenderContext->GetClipRegion();
+    }
+}
+
+AnimationRenderer::~AnimationRenderer()
+{
+    mpBackground.disposeAndClear();
+    mpRestore.disposeAndClear();
+
+    Animation::ImplDecAnimCount();
+}
+
+bool AnimationRenderer::matches(const OutputDevice* pOut, tools::Long nRendererId) const
+{
+    return (!pOut || pOut == mpRenderContext) && (nRendererId == 0 || nRendererId == mnRendererId);
+}
+
+void AnimationRenderer::getPosSize( const AnimationFrame& rAnimationFrame, Point& rPosPix, Size& rSizePix )
+{
+    const Size& rAnmSize = mpParent->GetDisplaySizePixel();
+    Point       aPt2( rAnimationFrame.maPositionPixel.X() + rAnimationFrame.maSizePixel.Width() - 1,
+                      rAnimationFrame.maPositionPixel.Y() + rAnimationFrame.maSizePixel.Height() - 1 );
+    double      fFactX, fFactY;
+
+    // calculate x scaling
+    if( rAnmSize.Width() > 1 )
+        fFactX = static_cast<double>( maSizePx.Width() - 1 ) / ( rAnmSize.Width() - 1 );
+    else
+        fFactX = 1.0;
+
+    // calculate y scaling
+    if( rAnmSize.Height() > 1 )
+        fFactY = static_cast<double>( maSizePx.Height() - 1 ) / ( rAnmSize.Height() - 1 );
+    else
+        fFactY = 1.0;
+
+    rPosPix.setX( FRound( rAnimationFrame.maPositionPixel.X() * fFactX ) );
+    rPosPix.setY( FRound( rAnimationFrame.maPositionPixel.Y() * fFactY ) );
+
+    aPt2.setX( FRound( aPt2.X() * fFactX ) );
+    aPt2.setY( FRound( aPt2.Y() * fFactY ) );
+
+    rSizePix.setWidth( aPt2.X() - rPosPix.X() + 1 );
+    rSizePix.setHeight( aPt2.Y() - rPosPix.Y() + 1 );
+
+    // Mirrored horizontally?
+    if( mbIsMirroredHorizontally )
+        rPosPix.setX( maSizePx.Width() - 1 - aPt2.X() );
+
+    // Mirrored vertically?
+    if( mbIsMirroredVertically )
+        rPosPix.setY( maSizePx.Height() - 1 - aPt2.Y() );
+}
+
+void AnimationRenderer::drawToIndex( sal_uLong nIndex )
+{
+    VclPtr<vcl::RenderContext> pRenderContext = mpRenderContext;
+
+    vcl::PaintBufferGuardPtr pGuard;
+    if (mpRenderContext->GetOutDevType() == OUTDEV_WINDOW)
+    {
+        vcl::Window* pWindow = static_cast<vcl::WindowOutputDevice*>(mpRenderContext.get())->GetOwnerWindow();
+        pGuard.reset(new vcl::PaintBufferGuard(pWindow->ImplGetWindowImpl()->mpFrameData, pWindow));
+        pRenderContext = pGuard->GetRenderContext();
+    }
+
+    ScopedVclPtrInstance<VirtualDevice> aVDev;
+    std::optional<vcl::Region> xOldClip;
+    if (!maClip.IsNull())
+        xOldClip = pRenderContext->GetClipRegion();
+
+    aVDev->SetOutputSizePixel( maSizePx, false );
+    nIndex = std::min( nIndex, static_cast<sal_uLong>(mpParent->Count()) - 1 );
+
+    for( sal_uLong i = 0; i <= nIndex; i++ )
+        draw( i, aVDev.get() );
+
+    if (xOldClip)
+        pRenderContext->SetClipRegion( maClip );
+
+    pRenderContext->DrawOutDev( maDispPt, maDispSz, Point(), maSizePx, *aVDev );
+    if (pGuard)
+        pGuard->SetPaintRect(tools::Rectangle(maDispPt, maDispSz));
+
+    if (xOldClip)
+        pRenderContext->SetClipRegion(*xOldClip);
+}
+
+void AnimationRenderer::draw( sal_uLong nIndex, VirtualDevice* pVDev )
+{
+    VclPtr<vcl::RenderContext> pRenderContext = mpRenderContext;
+
+    vcl::PaintBufferGuardPtr pGuard;
+    if (!pVDev && mpRenderContext->GetOutDevType() == OUTDEV_WINDOW)
+    {
+        vcl::Window* pWindow = static_cast<vcl::WindowOutputDevice*>(mpRenderContext.get())->GetOwnerWindow();
+        pGuard.reset(new vcl::PaintBufferGuard(pWindow->ImplGetWindowImpl()->mpFrameData, pWindow));
+        pRenderContext = pGuard->GetRenderContext();
+    }
+
+    tools::Rectangle aOutRect( pRenderContext->PixelToLogic( Point() ), pRenderContext->GetOutputSize() );
+
+    // check, if output lies out of display
+    if( aOutRect.Intersection( tools::Rectangle( maDispPt, maDispSz ) ).IsEmpty() )
+    {
+        setMarked( true );
+    }
+    else if( !mbIsPaused )
+    {
+        VclPtr<VirtualDevice>   pDev;
+        Point                   aPosPix;
+        Point                   aBmpPosPix;
+        Size                    aSizePix;
+        Size                    aBmpSizePix;
+        const sal_uLong             nLastPos = mpParent->Count() - 1;
+        mnActIndex = std::min( nIndex, nLastPos );
+        const AnimationFrame&  rAnimationFrame = mpParent->Get( static_cast<sal_uInt16>( mnActIndex ) );
+
+        getPosSize( rAnimationFrame, aPosPix, aSizePix );
+
+        // Mirrored horizontally?
+        if( mbIsMirroredHorizontally )
+        {
+            aBmpPosPix.setX( aPosPix.X() + aSizePix.Width() - 1 );
+            aBmpSizePix.setWidth( -aSizePix.Width() );
+        }
+        else
+        {
+            aBmpPosPix.setX( aPosPix.X() );
+            aBmpSizePix.setWidth( aSizePix.Width() );
+        }
+
+        // Mirrored vertically?
+        if( mbIsMirroredVertically )
+        {
+            aBmpPosPix.setY( aPosPix.Y() + aSizePix.Height() - 1 );
+            aBmpSizePix.setHeight( -aSizePix.Height() );
+        }
+        else
+        {
+            aBmpPosPix.setY( aPosPix.Y() );
+            aBmpSizePix.setHeight( aSizePix.Height() );
+        }
+
+        // get output device
+        if( !pVDev )
+        {
+            pDev = VclPtr<VirtualDevice>::Create();
+            pDev->SetOutputSizePixel( maSizePx, false );
+            pDev->DrawOutDev( Point(), maSizePx, maDispPt, maDispSz, *pRenderContext );
+        }
+        else
+            pDev = pVDev;
+
+        // restore background after each run
+        if( !nIndex )
+        {
+            meLastDisposal = Disposal::Back;
+            maRestPt = Point();
+            maRestSz = maSizePx;
+        }
+
+        // restore
+        if( ( Disposal::Not != meLastDisposal ) && maRestSz.Width() && maRestSz.Height() )
+        {
+            if( Disposal::Back == meLastDisposal )
+                pDev->DrawOutDev( maRestPt, maRestSz, maRestPt, maRestSz, *mpBackground );
+            else
+                pDev->DrawOutDev( maRestPt, maRestSz, Point(), maRestSz, *mpRestore );
+        }
+
+        meLastDisposal = rAnimationFrame.meDisposal;
+        maRestPt = aPosPix;
+        maRestSz = aSizePix;
+
+        // What do we need to restore the next time?
+        // Put it into a bitmap if needed, else delete
+        // SaveBitmap to conserve memory
+        if( ( meLastDisposal == Disposal::Back ) || ( meLastDisposal == Disposal::Not ) )
+            mpRestore->SetOutputSizePixel( Size( 1, 1 ), false );
+        else
+        {
+            mpRestore->SetOutputSizePixel( maRestSz, false );
+            mpRestore->DrawOutDev( Point(), maRestSz, aPosPix, aSizePix, *pDev );
+        }
+
+        pDev->DrawBitmapEx( aBmpPosPix, aBmpSizePix, rAnimationFrame.maBitmapEx );
+
+        if( !pVDev )
+        {
+            std::optional<vcl::Region> xOldClip;
+            if (!maClip.IsNull())
+                xOldClip = pRenderContext->GetClipRegion();
+
+            if (xOldClip)
+                pRenderContext->SetClipRegion( maClip );
+
+            pRenderContext->DrawOutDev( maDispPt, maDispSz, Point(), maSizePx, *pDev );
+            if (pGuard)
+                pGuard->SetPaintRect(tools::Rectangle(maDispPt, maDispSz));
+
+            if( xOldClip)
+            {
+                pRenderContext->SetClipRegion(*xOldClip);
+                xOldClip.reset();
+            }
+
+            pDev.disposeAndClear();
+            pRenderContext->Flush();
+        }
+    }
+}
+
+void AnimationRenderer::repaint()
+{
+    const bool bOldPause = mbIsPaused;
+
+    mpRenderContext->SaveBackground(*mpBackground, maDispPt, maDispSz, maSizePx);
+
+    mbIsPaused = false;
+    drawToIndex( mnActIndex );
+    mbIsPaused = bOldPause;
+}
+
+AnimationData* AnimationRenderer::createAnimationData() const
+{
+    AnimationData* pDataItem = new AnimationData;
+
+    pDataItem->maOriginStartPt = maOriginPt;
+    pDataItem->maStartSize = maLogicalSize;
+    pDataItem->mpRenderContext = mpRenderContext;
+    pDataItem->mpRendererData = const_cast<AnimationRenderer *>(this);
+    pDataItem->mnRendererId = mnRendererId;
+    pDataItem->mbIsPaused = mbIsPaused;
+
+    return pDataItem;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */