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

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

13 files changed, 4722 insertions, 0 deletions

diff --git a/vcl/headless/BitmapHelper.cxx b/vcl/headless/BitmapHelper.cxx
new file mode 100644
index 000000000..2b9c670df
--- /dev/null
+++ b/vcl/headless/BitmapHelper.cxx
@@ -0,0 +1,268 @@
+/* -*- 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 <headless/BitmapHelper.hxx>
+#include <svdata.hxx>
+
+BitmapHelper::BitmapHelper(const SalBitmap& rSourceBitmap, const bool bForceARGB32)
+#ifdef HAVE_CAIRO_FORMAT_RGB24_888
+    : m_bForceARGB32(bForceARGB32)
+#endif
+{
+    const SvpSalBitmap& rSrcBmp = static_cast<const SvpSalBitmap&>(rSourceBitmap);
+#ifdef HAVE_CAIRO_FORMAT_RGB24_888
+    if ((rSrcBmp.GetBitCount() != 32 && rSrcBmp.GetBitCount() != 24) || bForceARGB32)
+#else
+    (void)bForceARGB32;
+    if (rSrcBmp.GetBitCount() != 32)
+#endif
+    {
+        //big stupid copy here
+        const BitmapBuffer* pSrc = rSrcBmp.GetBuffer();
+        const SalTwoRect aTwoRect
+            = { 0, 0, pSrc->mnWidth, pSrc->mnHeight, 0, 0, pSrc->mnWidth, pSrc->mnHeight };
+        std::unique_ptr<BitmapBuffer> pTmp
+            = (pSrc->mnFormat == SVP_24BIT_FORMAT
+                   ? FastConvert24BitRgbTo32BitCairo(pSrc)
+                   : StretchAndConvert(*pSrc, aTwoRect, SVP_CAIRO_FORMAT));
+        aTmpBmp.Create(std::move(pTmp));
+
+        assert(aTmpBmp.GetBitCount() == 32);
+        implSetSurface(CairoCommon::createCairoSurface(aTmpBmp.GetBuffer()));
+    }
+    else
+    {
+        implSetSurface(CairoCommon::createCairoSurface(rSrcBmp.GetBuffer()));
+    }
+}
+
+void BitmapHelper::mark_dirty() { cairo_surface_mark_dirty(implGetSurface()); }
+
+unsigned char* BitmapHelper::getBits(sal_Int32& rStride)
+{
+    cairo_surface_flush(implGetSurface());
+
+    unsigned char* mask_data = cairo_image_surface_get_data(implGetSurface());
+
+    const cairo_format_t nFormat = cairo_image_surface_get_format(implGetSurface());
+#ifdef HAVE_CAIRO_FORMAT_RGB24_888
+    if (!m_bForceARGB32)
+        assert(nFormat == CAIRO_FORMAT_RGB24_888 && "Expected RGB24_888 image");
+    else
+#endif
+    {
+        assert(nFormat == CAIRO_FORMAT_ARGB32
+               && "need to implement CAIRO_FORMAT_A1 after all here");
+    }
+
+    rStride
+        = cairo_format_stride_for_width(nFormat, cairo_image_surface_get_width(implGetSurface()));
+
+    return mask_data;
+}
+
+MaskHelper::MaskHelper(const SalBitmap& rAlphaBitmap)
+{
+    const SvpSalBitmap& rMask = static_cast<const SvpSalBitmap&>(rAlphaBitmap);
+    const BitmapBuffer* pMaskBuf = rMask.GetBuffer();
+
+    if (rAlphaBitmap.GetBitCount() == 8)
+    {
+        // the alpha values need to be inverted for Cairo
+        // so big stupid copy and invert here
+        const int nImageSize = pMaskBuf->mnHeight * pMaskBuf->mnScanlineSize;
+        pAlphaBits.reset(new unsigned char[nImageSize]);
+        memcpy(pAlphaBits.get(), pMaskBuf->mpBits, nImageSize);
+
+        // TODO: make upper layers use standard alpha
+        sal_uInt32* pLDst = reinterpret_cast<sal_uInt32*>(pAlphaBits.get());
+        for (int i = nImageSize / sizeof(sal_uInt32); --i >= 0; ++pLDst)
+            *pLDst = ~*pLDst;
+        assert(reinterpret_cast<unsigned char*>(pLDst) == pAlphaBits.get() + nImageSize);
+
+        implSetSurface(cairo_image_surface_create_for_data(pAlphaBits.get(), CAIRO_FORMAT_A8,
+                                                           pMaskBuf->mnWidth, pMaskBuf->mnHeight,
+                                                           pMaskBuf->mnScanlineSize));
+    }
+    else
+    {
+        // the alpha values need to be inverted for Cairo
+        // so big stupid copy and invert here
+        const int nImageSize = pMaskBuf->mnHeight * pMaskBuf->mnScanlineSize;
+        pAlphaBits.reset(new unsigned char[nImageSize]);
+        memcpy(pAlphaBits.get(), pMaskBuf->mpBits, nImageSize);
+
+        const sal_Int32 nBlackIndex = pMaskBuf->maPalette.GetBestIndex(BitmapColor(COL_BLACK));
+        if (nBlackIndex == 0)
+        {
+            // TODO: make upper layers use standard alpha
+            unsigned char* pDst = pAlphaBits.get();
+            for (int i = nImageSize; --i >= 0; ++pDst)
+                *pDst = ~*pDst;
+        }
+
+        implSetSurface(cairo_image_surface_create_for_data(pAlphaBits.get(), CAIRO_FORMAT_A1,
+                                                           pMaskBuf->mnWidth, pMaskBuf->mnHeight,
+                                                           pMaskBuf->mnScanlineSize));
+    }
+}
+
+namespace
+{
+// check for env var that decides for using downscale pattern
+const char* pDisableDownScale(getenv("SAL_DISABLE_CAIRO_DOWNSCALE"));
+bool bDisableDownScale(nullptr != pDisableDownScale);
+
+sal_Int64 estimateUsageInBytesForSurfaceHelper(const SurfaceHelper* pHelper)
+{
+    sal_Int64 nRetval(0);
+
+    if (nullptr != pHelper)
+    {
+        cairo_surface_t* pSurface(pHelper->getSurface());
+
+        if (pSurface)
+        {
+            const tools::Long nStride(cairo_image_surface_get_stride(pSurface));
+            const tools::Long nHeight(cairo_image_surface_get_height(pSurface));
+
+            nRetval = nStride * nHeight;
+
+            // if we do downscale, size will grow by 1/4 + 1/16 + 1/32 + ...,
+            // rough estimation just multiplies by 1.25, should be good enough
+            // for estimation of buffer survival time
+            if (!bDisableDownScale)
+            {
+                nRetval = (nRetval * 5) / 4;
+            }
+        }
+    }
+
+    return nRetval;
+}
+
+} // end anonymous namespace
+
+SystemDependentData_BitmapHelper::SystemDependentData_BitmapHelper(
+    basegfx::SystemDependentDataManager& rSystemDependentDataManager,
+    const std::shared_ptr<BitmapHelper>& rBitmapHelper)
+    : basegfx::SystemDependentData(rSystemDependentDataManager)
+    , maBitmapHelper(rBitmapHelper)
+{
+}
+
+sal_Int64 SystemDependentData_BitmapHelper::estimateUsageInBytes() const
+{
+    return estimateUsageInBytesForSurfaceHelper(maBitmapHelper.get());
+}
+
+SystemDependentData_MaskHelper::SystemDependentData_MaskHelper(
+    basegfx::SystemDependentDataManager& rSystemDependentDataManager,
+    const std::shared_ptr<MaskHelper>& rMaskHelper)
+    : basegfx::SystemDependentData(rSystemDependentDataManager)
+    , maMaskHelper(rMaskHelper)
+{
+}
+
+sal_Int64 SystemDependentData_MaskHelper::estimateUsageInBytes() const
+{
+    return estimateUsageInBytesForSurfaceHelper(maMaskHelper.get());
+}
+
+namespace
+{
+// MM02 decide to use buffers or not
+const char* pDisableMM02Goodies(getenv("SAL_DISABLE_MM02_GOODIES"));
+bool bUseBuffer(nullptr == pDisableMM02Goodies);
+const tools::Long nMinimalSquareSizeToBuffer(64 * 64);
+}
+
+void tryToUseSourceBuffer(const SalBitmap& rSourceBitmap, std::shared_ptr<BitmapHelper>& rSurface)
+{
+    // MM02 try to access buffered BitmapHelper
+    std::shared_ptr<SystemDependentData_BitmapHelper> pSystemDependentData_BitmapHelper;
+    const bool bBufferSource(bUseBuffer
+                             && rSourceBitmap.GetSize().Width() * rSourceBitmap.GetSize().Height()
+                                    > nMinimalSquareSizeToBuffer);
+
+    if (bBufferSource)
+    {
+        const SvpSalBitmap& rSrcBmp(static_cast<const SvpSalBitmap&>(rSourceBitmap));
+        pSystemDependentData_BitmapHelper
+            = rSrcBmp.getSystemDependentData<SystemDependentData_BitmapHelper>();
+
+        if (pSystemDependentData_BitmapHelper)
+        {
+            // reuse buffered data
+            rSurface = pSystemDependentData_BitmapHelper->getBitmapHelper();
+        }
+    }
+
+    if (rSurface)
+        return;
+
+    // create data on-demand
+    rSurface = std::make_shared<BitmapHelper>(rSourceBitmap);
+
+    if (bBufferSource)
+    {
+        // add to buffering mechanism to potentially reuse next time
+        const SvpSalBitmap& rSrcBmp(static_cast<const SvpSalBitmap&>(rSourceBitmap));
+        rSrcBmp.addOrReplaceSystemDependentData<SystemDependentData_BitmapHelper>(
+            ImplGetSystemDependentDataManager(), rSurface);
+    }
+}
+
+void tryToUseMaskBuffer(const SalBitmap& rMaskBitmap, std::shared_ptr<MaskHelper>& rMask)
+{
+    // MM02 try to access buffered MaskHelper
+    std::shared_ptr<SystemDependentData_MaskHelper> pSystemDependentData_MaskHelper;
+    const bool bBufferMask(bUseBuffer
+                           && rMaskBitmap.GetSize().Width() * rMaskBitmap.GetSize().Height()
+                                  > nMinimalSquareSizeToBuffer);
+
+    if (bBufferMask)
+    {
+        const SvpSalBitmap& rSrcBmp(static_cast<const SvpSalBitmap&>(rMaskBitmap));
+        pSystemDependentData_MaskHelper
+            = rSrcBmp.getSystemDependentData<SystemDependentData_MaskHelper>();
+
+        if (pSystemDependentData_MaskHelper)
+        {
+            // reuse buffered data
+            rMask = pSystemDependentData_MaskHelper->getMaskHelper();
+        }
+    }
+
+    if (rMask)
+        return;
+
+    // create data on-demand
+    rMask = std::make_shared<MaskHelper>(rMaskBitmap);
+
+    if (bBufferMask)
+    {
+        // add to buffering mechanism to potentially reuse next time
+        const SvpSalBitmap& rSrcBmp(static_cast<const SvpSalBitmap&>(rMaskBitmap));
+        rSrcBmp.addOrReplaceSystemDependentData<SystemDependentData_MaskHelper>(
+            ImplGetSystemDependentDataManager(), rMask);
+    }
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/headless/CairoCommon.cxx b/vcl/headless/CairoCommon.cxx
new file mode 100644
index 000000000..d44724e8a
--- /dev/null
+++ b/vcl/headless/CairoCommon.cxx
@@ -0,0 +1,1321 @@
+/* -*- 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 <headless/CairoCommon.hxx>
+#include <dlfcn.h>
+#include <vcl/BitmapTools.hxx>
+#include <svdata.hxx>
+#include <tools/helpers.hxx>
+#include <basegfx/utils/canvastools.hxx>
+#include <basegfx/matrix/b2dhommatrixtools.hxx>
+#include <basegfx/polygon/b2dpolypolygontools.hxx>
+#include <basegfx/polygon/b2dpolygontools.hxx>
+#include <unotools/configmgr.hxx>
+#include <sal/log.hxx>
+#include <osl/module.h>
+
+void dl_cairo_surface_set_device_scale(cairo_surface_t* surface, double x_scale, double y_scale)
+{
+#if !HAVE_DLAPI
+    cairo_surface_set_device_scale(surface, x_scale, y_scale);
+#else
+    static auto func = reinterpret_cast<void (*)(cairo_surface_t*, double, double)>(
+        osl_getAsciiFunctionSymbol(nullptr, "cairo_surface_set_device_scale"));
+    if (func)
+        func(surface, x_scale, y_scale);
+#endif
+}
+
+void dl_cairo_surface_get_device_scale(cairo_surface_t* surface, double* x_scale, double* y_scale)
+{
+#if !HAVE_DLAPI
+    cairo_surface_get_device_scale(surface, x_scale, y_scale);
+#else
+    static auto func = reinterpret_cast<void (*)(cairo_surface_t*, double*, double*)>(
+        osl_getAsciiFunctionSymbol(nullptr, "cairo_surface_get_device_scale"));
+    if (func)
+        func(surface, x_scale, y_scale);
+    else
+    {
+        if (x_scale)
+            *x_scale = 1.0;
+        if (y_scale)
+            *y_scale = 1.0;
+    }
+#endif
+}
+
+basegfx::B2DRange getFillDamage(cairo_t* cr)
+{
+    double x1, y1, x2, y2;
+
+    // this is faster than cairo_fill_extents, at the cost of some overdraw
+    cairo_path_extents(cr, &x1, &y1, &x2, &y2);
+
+    // support B2DRange::isEmpty()
+    if (0.0 != x1 || 0.0 != y1 || 0.0 != x2 || 0.0 != y2)
+    {
+        return basegfx::B2DRange(x1, y1, x2, y2);
+    }
+
+    return basegfx::B2DRange();
+}
+
+basegfx::B2DRange getClipBox(cairo_t* cr)
+{
+    double x1, y1, x2, y2;
+
+    cairo_clip_extents(cr, &x1, &y1, &x2, &y2);
+
+    // support B2DRange::isEmpty()
+    if (0.0 != x1 || 0.0 != y1 || 0.0 != x2 || 0.0 != y2)
+    {
+        return basegfx::B2DRange(x1, y1, x2, y2);
+    }
+
+    return basegfx::B2DRange();
+}
+
+basegfx::B2DRange getClippedFillDamage(cairo_t* cr)
+{
+    basegfx::B2DRange aDamageRect(getFillDamage(cr));
+    aDamageRect.intersect(getClipBox(cr));
+    return aDamageRect;
+}
+
+basegfx::B2DRange getStrokeDamage(cairo_t* cr)
+{
+    double x1, y1, x2, y2;
+
+    // less accurate, but much faster
+    cairo_path_extents(cr, &x1, &y1, &x2, &y2);
+
+    // support B2DRange::isEmpty()
+    if (0.0 != x1 || 0.0 != y1 || 0.0 != x2 || 0.0 != y2)
+    {
+        return basegfx::B2DRange(x1, y1, x2, y2);
+    }
+
+    return basegfx::B2DRange();
+}
+
+basegfx::B2DRange getClippedStrokeDamage(cairo_t* cr)
+{
+    basegfx::B2DRange aDamageRect(getStrokeDamage(cr));
+    aDamageRect.intersect(getClipBox(cr));
+    return aDamageRect;
+}
+
+// Remove bClosePath: Checked that the already used mechanism for Win using
+// Gdiplus already relies on rPolygon.isClosed(), so should be safe to replace
+// this.
+// For PixelSnap we need the ObjectToDevice transformation here now. This is a
+// special case relative to the also executed LineDraw-Offset of (0.5, 0.5) in
+// DeviceCoordinates: The LineDraw-Offset is applied *after* the snap, so we
+// need the ObjectToDevice transformation *without* that offset here to do the
+// same. The LineDraw-Offset will be applied by the callers using a linear
+// transformation for Cairo now
+// For support of PixelSnapHairline we also need the ObjectToDevice transformation
+// and a method (same as in gdiimpl.cxx for Win and Gdiplus). This is needed e.g.
+// for Chart-content visualization. CAUTION: It's not the same as PixelSnap (!)
+// tdf#129845 add reply value to allow counting a point/byte/size measurement to
+// be included
+size_t AddPolygonToPath(cairo_t* cr, const basegfx::B2DPolygon& rPolygon,
+                        const basegfx::B2DHomMatrix& rObjectToDevice, bool bPixelSnap,
+                        bool bPixelSnapHairline)
+{
+    // short circuit if there is nothing to do
+    const sal_uInt32 nPointCount(rPolygon.count());
+    size_t nSizeMeasure(0);
+
+    if (0 == nPointCount)
+    {
+        return nSizeMeasure;
+    }
+
+    const bool bHasCurves(rPolygon.areControlPointsUsed());
+    const bool bClosePath(rPolygon.isClosed());
+    const bool bObjectToDeviceUsed(!rObjectToDevice.isIdentity());
+    basegfx::B2DHomMatrix aObjectToDeviceInv;
+    basegfx::B2DPoint aLast;
+
+    for (sal_uInt32 nPointIdx = 0, nPrevIdx = 0;; nPrevIdx = nPointIdx++)
+    {
+        int nClosedIdx = nPointIdx;
+        if (nPointIdx >= nPointCount)
+        {
+            // prepare to close last curve segment if needed
+            if (bClosePath && (nPointIdx == nPointCount))
+            {
+                nClosedIdx = 0;
+            }
+            else
+            {
+                break;
+            }
+        }
+
+        basegfx::B2DPoint aPoint(rPolygon.getB2DPoint(nClosedIdx));
+
+        if (bPixelSnap)
+        {
+            // snap device coordinates to full pixels
+            if (bObjectToDeviceUsed)
+            {
+                // go to DeviceCoordinates
+                aPoint *= rObjectToDevice;
+            }
+
+            // snap by rounding
+            aPoint.setX(basegfx::fround(aPoint.getX()));
+            aPoint.setY(basegfx::fround(aPoint.getY()));
+
+            if (bObjectToDeviceUsed)
+            {
+                if (aObjectToDeviceInv.isIdentity())
+                {
+                    aObjectToDeviceInv = rObjectToDevice;
+                    aObjectToDeviceInv.invert();
+                }
+
+                // go back to ObjectCoordinates
+                aPoint *= aObjectToDeviceInv;
+            }
+        }
+
+        if (bPixelSnapHairline)
+        {
+            // snap horizontal and vertical lines (mainly used in Chart for
+            // 'nicer' AAing)
+            aPoint = impPixelSnap(rPolygon, rObjectToDevice, aObjectToDeviceInv, nClosedIdx);
+        }
+
+        if (!nPointIdx)
+        {
+            // first point => just move there
+            cairo_move_to(cr, aPoint.getX(), aPoint.getY());
+            aLast = aPoint;
+            continue;
+        }
+
+        bool bPendingCurve(false);
+
+        if (bHasCurves)
+        {
+            bPendingCurve = rPolygon.isNextControlPointUsed(nPrevIdx);
+            bPendingCurve |= rPolygon.isPrevControlPointUsed(nClosedIdx);
+        }
+
+        if (!bPendingCurve) // line segment
+        {
+            cairo_line_to(cr, aPoint.getX(), aPoint.getY());
+            nSizeMeasure++;
+        }
+        else // cubic bezier segment
+        {
+            basegfx::B2DPoint aCP1 = rPolygon.getNextControlPoint(nPrevIdx);
+            basegfx::B2DPoint aCP2 = rPolygon.getPrevControlPoint(nClosedIdx);
+
+            // tdf#99165 if the control points are 'empty', create the mathematical
+            // correct replacement ones to avoid problems with the graphical sub-system
+            // tdf#101026 The 1st attempt to create a mathematically correct replacement control
+            // vector was wrong. Best alternative is one as close as possible which means short.
+            if (aCP1.equal(aLast))
+            {
+                aCP1 = aLast + ((aCP2 - aLast) * 0.0005);
+            }
+
+            if (aCP2.equal(aPoint))
+            {
+                aCP2 = aPoint + ((aCP1 - aPoint) * 0.0005);
+            }
+
+            cairo_curve_to(cr, aCP1.getX(), aCP1.getY(), aCP2.getX(), aCP2.getY(), aPoint.getX(),
+                           aPoint.getY());
+            // take some bigger measure for curve segments - too expensive to subdivide
+            // here and that precision not needed, but four (2 points, 2 control-points)
+            // would be a too low weight
+            nSizeMeasure += 10;
+        }
+
+        aLast = aPoint;
+    }
+
+    if (bClosePath)
+    {
+        cairo_close_path(cr);
+    }
+
+    return nSizeMeasure;
+}
+
+basegfx::B2DPoint impPixelSnap(const basegfx::B2DPolygon& rPolygon,
+                               const basegfx::B2DHomMatrix& rObjectToDevice,
+                               basegfx::B2DHomMatrix& rObjectToDeviceInv, sal_uInt32 nIndex)
+{
+    const sal_uInt32 nCount(rPolygon.count());
+
+    // get the data
+    const basegfx::B2ITuple aPrevTuple(
+        basegfx::fround(rObjectToDevice * rPolygon.getB2DPoint((nIndex + nCount - 1) % nCount)));
+    const basegfx::B2DPoint aCurrPoint(rObjectToDevice * rPolygon.getB2DPoint(nIndex));
+    const basegfx::B2ITuple aCurrTuple(basegfx::fround(aCurrPoint));
+    const basegfx::B2ITuple aNextTuple(
+        basegfx::fround(rObjectToDevice * rPolygon.getB2DPoint((nIndex + 1) % nCount)));
+
+    // get the states
+    const bool bPrevVertical(aPrevTuple.getX() == aCurrTuple.getX());
+    const bool bNextVertical(aNextTuple.getX() == aCurrTuple.getX());
+    const bool bPrevHorizontal(aPrevTuple.getY() == aCurrTuple.getY());
+    const bool bNextHorizontal(aNextTuple.getY() == aCurrTuple.getY());
+    const bool bSnapX(bPrevVertical || bNextVertical);
+    const bool bSnapY(bPrevHorizontal || bNextHorizontal);
+
+    if (bSnapX || bSnapY)
+    {
+        basegfx::B2DPoint aSnappedPoint(bSnapX ? aCurrTuple.getX() : aCurrPoint.getX(),
+                                        bSnapY ? aCurrTuple.getY() : aCurrPoint.getY());
+
+        if (rObjectToDeviceInv.isIdentity())
+        {
+            rObjectToDeviceInv = rObjectToDevice;
+            rObjectToDeviceInv.invert();
+        }
+
+        aSnappedPoint *= rObjectToDeviceInv;
+
+        return aSnappedPoint;
+    }
+
+    return rPolygon.getB2DPoint(nIndex);
+}
+
+SystemDependentData_CairoPath::SystemDependentData_CairoPath(
+    basegfx::SystemDependentDataManager& rSystemDependentDataManager, size_t nSizeMeasure,
+    cairo_t* cr, bool bNoJoin, bool bAntiAlias, const std::vector<double>* pStroke)
+    : basegfx::SystemDependentData(rSystemDependentDataManager)
+    , mpCairoPath(nullptr)
+    , mbNoJoin(bNoJoin)
+    , mbAntiAlias(bAntiAlias)
+{
+    static const bool bFuzzing = utl::ConfigManager::IsFuzzing();
+
+    // tdf#129845 only create a copy of the path when nSizeMeasure is
+    // bigger than some decent threshold
+    if (!bFuzzing && nSizeMeasure > 50)
+    {
+        mpCairoPath = cairo_copy_path(cr);
+
+        if (nullptr != pStroke)
+        {
+            maStroke = *pStroke;
+        }
+    }
+}
+
+SystemDependentData_CairoPath::~SystemDependentData_CairoPath()
+{
+    if (nullptr != mpCairoPath)
+    {
+        cairo_path_destroy(mpCairoPath);
+        mpCairoPath = nullptr;
+    }
+}
+
+sal_Int64 SystemDependentData_CairoPath::estimateUsageInBytes() const
+{
+    // tdf#129845 by using the default return value of zero when no path
+    // was created, SystemDependentData::calculateCombinedHoldCyclesInSeconds
+    // will do the right thing and not buffer this entry at all
+    sal_Int64 nRetval(0);
+
+    if (nullptr != mpCairoPath)
+    {
+        // per node
+        // - num_data incarnations of
+        // - sizeof(cairo_path_data_t) which is a union of defines and point data
+        //   thus may 2 x sizeof(double)
+        nRetval = mpCairoPath->num_data * sizeof(cairo_path_data_t);
+    }
+
+    return nRetval;
+}
+
+void add_polygon_path(cairo_t* cr, const basegfx::B2DPolyPolygon& rPolyPolygon,
+                      const basegfx::B2DHomMatrix& rObjectToDevice, bool bPixelSnap)
+{
+    // try to access buffered data
+    std::shared_ptr<SystemDependentData_CairoPath> pSystemDependentData_CairoPath(
+        rPolyPolygon.getSystemDependentData<SystemDependentData_CairoPath>());
+
+    if (pSystemDependentData_CairoPath)
+    {
+        // re-use data
+        cairo_append_path(cr, pSystemDependentData_CairoPath->getCairoPath());
+    }
+    else
+    {
+        // create data
+        size_t nSizeMeasure(0);
+
+        for (const auto& rPoly : rPolyPolygon)
+        {
+            // PixelOffset used: Was dependent of 'm_aLineColor != SALCOLOR_NONE'
+            // Adapt setupPolyPolygon-users to set a linear transformation to achieve PixelOffset
+            nSizeMeasure += AddPolygonToPath(cr, rPoly, rObjectToDevice, bPixelSnap, false);
+        }
+
+        // copy and add to buffering mechanism
+        // for decisions how/what to buffer, see Note in WinSalGraphicsImpl::drawPolyPolygon
+        pSystemDependentData_CairoPath
+            = rPolyPolygon.addOrReplaceSystemDependentData<SystemDependentData_CairoPath>(
+                ImplGetSystemDependentDataManager(), nSizeMeasure, cr, false, false, nullptr);
+    }
+}
+
+cairo_user_data_key_t* CairoCommon::getDamageKey()
+{
+    static cairo_user_data_key_t aDamageKey;
+    return &aDamageKey;
+}
+
+cairo_t* CairoCommon::getCairoContext(bool bXorModeAllowed, bool bAntiAlias) const
+{
+    cairo_t* cr;
+    if (m_ePaintMode == PaintMode::Xor && bXorModeAllowed)
+        cr = createTmpCompatibleCairoContext();
+    else
+        cr = cairo_create(m_pSurface);
+    cairo_set_line_width(cr, 1);
+    cairo_set_fill_rule(cr, CAIRO_FILL_RULE_EVEN_ODD);
+    cairo_set_antialias(cr, bAntiAlias ? CAIRO_ANTIALIAS_DEFAULT : CAIRO_ANTIALIAS_NONE);
+    cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
+
+    // ensure no linear transformation and no PathInfo in local cairo_path_t
+    cairo_identity_matrix(cr);
+    cairo_new_path(cr);
+
+    return cr;
+}
+
+void CairoCommon::releaseCairoContext(cairo_t* cr, bool bXorModeAllowed,
+                                      const basegfx::B2DRange& rExtents) const
+{
+    const bool bXoring = (m_ePaintMode == PaintMode::Xor && bXorModeAllowed);
+
+    if (rExtents.isEmpty())
+    {
+        //nothing changed, return early
+        if (bXoring)
+        {
+            cairo_surface_t* surface = cairo_get_target(cr);
+            cairo_surface_destroy(surface);
+        }
+        cairo_destroy(cr);
+        return;
+    }
+
+    basegfx::B2IRange aIntExtents(basegfx::unotools::b2ISurroundingRangeFromB2DRange(rExtents));
+    sal_Int32 nExtentsLeft(aIntExtents.getMinX()), nExtentsTop(aIntExtents.getMinY());
+    sal_Int32 nExtentsRight(aIntExtents.getMaxX()), nExtentsBottom(aIntExtents.getMaxY());
+    sal_Int32 nWidth = m_aFrameSize.getX();
+    sal_Int32 nHeight = m_aFrameSize.getY();
+    nExtentsLeft = std::max<sal_Int32>(nExtentsLeft, 0);
+    nExtentsTop = std::max<sal_Int32>(nExtentsTop, 0);
+    nExtentsRight = std::min<sal_Int32>(nExtentsRight, nWidth);
+    nExtentsBottom = std::min<sal_Int32>(nExtentsBottom, nHeight);
+
+    cairo_surface_t* surface = cairo_get_target(cr);
+    cairo_surface_flush(surface);
+
+    //For the most part we avoid the use of XOR these days, but there
+    //are some edge cases where legacy stuff still supports it, so
+    //emulate it (slowly) here.
+    if (bXoring)
+    {
+        cairo_surface_t* target_surface = m_pSurface;
+        if (cairo_surface_get_type(target_surface) != CAIRO_SURFACE_TYPE_IMAGE)
+        {
+            //in the unlikely case we can't use m_pSurface directly, copy contents
+            //to another temp image surface
+            cairo_t* copycr = createTmpCompatibleCairoContext();
+            cairo_rectangle(copycr, nExtentsLeft, nExtentsTop, nExtentsRight - nExtentsLeft,
+                            nExtentsBottom - nExtentsTop);
+            cairo_set_source_surface(copycr, m_pSurface, 0, 0);
+            cairo_paint(copycr);
+            target_surface = cairo_get_target(copycr);
+            cairo_destroy(copycr);
+        }
+
+        cairo_surface_flush(target_surface);
+        unsigned char* target_surface_data = cairo_image_surface_get_data(target_surface);
+        unsigned char* xor_surface_data = cairo_image_surface_get_data(surface);
+
+        cairo_format_t nFormat = cairo_image_surface_get_format(target_surface);
+        assert(nFormat == CAIRO_FORMAT_ARGB32
+               && "need to implement CAIRO_FORMAT_A1 after all here");
+        sal_Int32 nStride = cairo_format_stride_for_width(nFormat, nWidth * m_fScale);
+        sal_Int32 nUnscaledExtentsLeft = nExtentsLeft * m_fScale;
+        sal_Int32 nUnscaledExtentsRight = nExtentsRight * m_fScale;
+        sal_Int32 nUnscaledExtentsTop = nExtentsTop * m_fScale;
+        sal_Int32 nUnscaledExtentsBottom = nExtentsBottom * m_fScale;
+
+        // Handle headless size forced to (1,1) by SvpSalFrame::GetSurfaceFrameSize().
+        int target_surface_width = cairo_image_surface_get_width(target_surface);
+        if (nUnscaledExtentsLeft > target_surface_width)
+            nUnscaledExtentsLeft = target_surface_width;
+        if (nUnscaledExtentsRight > target_surface_width)
+            nUnscaledExtentsRight = target_surface_width;
+        int target_surface_height = cairo_image_surface_get_height(target_surface);
+        if (nUnscaledExtentsTop > target_surface_height)
+            nUnscaledExtentsTop = target_surface_height;
+        if (nUnscaledExtentsBottom > target_surface_height)
+            nUnscaledExtentsBottom = target_surface_height;
+
+#if !ENABLE_WASM_STRIP_PREMULTIPLY
+        vcl::bitmap::lookup_table const& unpremultiply_table
+            = vcl::bitmap::get_unpremultiply_table();
+        vcl::bitmap::lookup_table const& premultiply_table = vcl::bitmap::get_premultiply_table();
+#endif
+        for (sal_Int32 y = nUnscaledExtentsTop; y < nUnscaledExtentsBottom; ++y)
+        {
+            unsigned char* true_row = target_surface_data + (nStride * y);
+            unsigned char* xor_row = xor_surface_data + (nStride * y);
+            unsigned char* true_data = true_row + (nUnscaledExtentsLeft * 4);
+            unsigned char* xor_data = xor_row + (nUnscaledExtentsLeft * 4);
+            for (sal_Int32 x = nUnscaledExtentsLeft; x < nUnscaledExtentsRight; ++x)
+            {
+                sal_uInt8 a = true_data[SVP_CAIRO_ALPHA];
+                sal_uInt8 xor_a = xor_data[SVP_CAIRO_ALPHA];
+#if ENABLE_WASM_STRIP_PREMULTIPLY
+                sal_uInt8 b = vcl::bitmap::unpremultiply(a, true_data[SVP_CAIRO_BLUE])
+                              ^ vcl::bitmap::unpremultiply(xor_a, xor_data[SVP_CAIRO_BLUE]);
+                sal_uInt8 g = vcl::bitmap::unpremultiply(a, true_data[SVP_CAIRO_GREEN])
+                              ^ vcl::bitmap::unpremultiply(xor_a, xor_data[SVP_CAIRO_GREEN]);
+                sal_uInt8 r = vcl::bitmap::unpremultiply(a, true_data[SVP_CAIRO_RED])
+                              ^ vcl::bitmap::unpremultiply(xor_a, xor_data[SVP_CAIRO_RED]);
+                true_data[SVP_CAIRO_BLUE] = vcl::bitmap::premultiply(a, b);
+                true_data[SVP_CAIRO_GREEN] = vcl::bitmap::premultiply(a, g);
+                true_data[SVP_CAIRO_RED] = vcl::bitmap::premultiply(a, r);
+#else
+                sal_uInt8 b = unpremultiply_table[a][true_data[SVP_CAIRO_BLUE]]
+                              ^ unpremultiply_table[xor_a][xor_data[SVP_CAIRO_BLUE]];
+                sal_uInt8 g = unpremultiply_table[a][true_data[SVP_CAIRO_GREEN]]
+                              ^ unpremultiply_table[xor_a][xor_data[SVP_CAIRO_GREEN]];
+                sal_uInt8 r = unpremultiply_table[a][true_data[SVP_CAIRO_RED]]
+                              ^ unpremultiply_table[xor_a][xor_data[SVP_CAIRO_RED]];
+                true_data[SVP_CAIRO_BLUE] = premultiply_table[a][b];
+                true_data[SVP_CAIRO_GREEN] = premultiply_table[a][g];
+                true_data[SVP_CAIRO_RED] = premultiply_table[a][r];
+#endif
+                true_data += 4;
+                xor_data += 4;
+            }
+        }
+        cairo_surface_mark_dirty(target_surface);
+
+        if (target_surface != m_pSurface)
+        {
+            cairo_t* copycr = cairo_create(m_pSurface);
+            //unlikely case we couldn't use m_pSurface directly, copy contents
+            //back from image surface
+            cairo_rectangle(copycr, nExtentsLeft, nExtentsTop, nExtentsRight - nExtentsLeft,
+                            nExtentsBottom - nExtentsTop);
+            cairo_set_source_surface(copycr, target_surface, 0, 0);
+            cairo_paint(copycr);
+            cairo_destroy(copycr);
+            cairo_surface_destroy(target_surface);
+        }
+
+        cairo_surface_destroy(surface);
+    }
+
+    cairo_destroy(cr); // unref
+
+    DamageHandler* pDamage
+        = static_cast<DamageHandler*>(cairo_surface_get_user_data(m_pSurface, getDamageKey()));
+
+    if (pDamage)
+    {
+        pDamage->damaged(pDamage->handle, nExtentsLeft, nExtentsTop, nExtentsRight - nExtentsLeft,
+                         nExtentsBottom - nExtentsTop);
+    }
+}
+
+cairo_t* CairoCommon::createTmpCompatibleCairoContext() const
+{
+#if CAIRO_VERSION >= CAIRO_VERSION_ENCODE(1, 12, 0)
+    cairo_surface_t* target = cairo_surface_create_similar_image(
+        m_pSurface,
+#else
+    cairo_surface_t* target = cairo_image_surface_create(
+#endif
+        CAIRO_FORMAT_ARGB32, m_aFrameSize.getX() * m_fScale, m_aFrameSize.getY() * m_fScale);
+
+    dl_cairo_surface_set_device_scale(target, m_fScale, m_fScale);
+
+    return cairo_create(target);
+}
+
+void CairoCommon::applyColor(cairo_t* cr, Color aColor, double fTransparency)
+{
+    if (cairo_surface_get_content(m_pSurface) == CAIRO_CONTENT_COLOR_ALPHA)
+    {
+        cairo_set_source_rgba(cr, aColor.GetRed() / 255.0, aColor.GetGreen() / 255.0,
+                              aColor.GetBlue() / 255.0, 1.0 - fTransparency);
+    }
+    else
+    {
+        double fSet = aColor == COL_BLACK ? 1.0 : 0.0;
+        cairo_set_source_rgba(cr, 1, 1, 1, fSet);
+        cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
+    }
+}
+
+void CairoCommon::clipRegion(cairo_t* cr, const vcl::Region& rClipRegion)
+{
+    RectangleVector aRectangles;
+    if (!rClipRegion.IsEmpty())
+    {
+        rClipRegion.GetRegionRectangles(aRectangles);
+    }
+    if (!aRectangles.empty())
+    {
+        for (auto const& rectangle : aRectangles)
+        {
+            cairo_rectangle(cr, rectangle.Left(), rectangle.Top(), rectangle.GetWidth(),
+                            rectangle.GetHeight());
+        }
+        cairo_clip(cr);
+    }
+}
+
+void CairoCommon::clipRegion(cairo_t* cr) { CairoCommon::clipRegion(cr, m_aClipRegion); }
+
+bool CairoCommon::drawPolyLine(cairo_t* cr, basegfx::B2DRange* pExtents, const Color& rLineColor,
+                               bool bAntiAlias, const basegfx::B2DHomMatrix& rObjectToDevice,
+                               const basegfx::B2DPolygon& rPolyLine, double fTransparency,
+                               double fLineWidth, const std::vector<double>* pStroke,
+                               basegfx::B2DLineJoin eLineJoin, css::drawing::LineCap eLineCap,
+                               double fMiterMinimumAngle, bool bPixelSnapHairline)
+{
+    // short circuit if there is nothing to do
+    if (0 == rPolyLine.count() || fTransparency < 0.0 || fTransparency >= 1.0)
+    {
+        return true;
+    }
+
+    // need to check/handle LineWidth when ObjectToDevice transformation is used
+    const bool bObjectToDeviceIsIdentity(rObjectToDevice.isIdentity());
+
+    // tdf#124848 calculate-back logical LineWidth for a hairline
+    // since this implementation hands over the transformation to
+    // the graphic sub-system
+    if (fLineWidth == 0)
+    {
+        fLineWidth = 1.0;
+
+        if (!bObjectToDeviceIsIdentity)
+        {
+            basegfx::B2DHomMatrix aObjectToDeviceInv(rObjectToDevice);
+            aObjectToDeviceInv.invert();
+            fLineWidth = (aObjectToDeviceInv * basegfx::B2DVector(fLineWidth, 0)).getLength();
+        }
+    }
+
+    // PixelOffset used: Need to reflect in linear transformation
+    cairo_matrix_t aMatrix;
+    basegfx::B2DHomMatrix aDamageMatrix(basegfx::utils::createTranslateB2DHomMatrix(0.5, 0.5));
+
+    if (bObjectToDeviceIsIdentity)
+    {
+        // Set PixelOffset as requested
+        cairo_matrix_init_translate(&aMatrix, 0.5, 0.5);
+    }
+    else
+    {
+        // Prepare ObjectToDevice transformation. Take PixelOffset for Lines into
+        // account: Multiply from left to act in DeviceCoordinates
+        aDamageMatrix = aDamageMatrix * rObjectToDevice;
+        cairo_matrix_init(&aMatrix, aDamageMatrix.get(0, 0), aDamageMatrix.get(1, 0),
+                          aDamageMatrix.get(0, 1), aDamageMatrix.get(1, 1), aDamageMatrix.get(0, 2),
+                          aDamageMatrix.get(1, 2));
+    }
+
+    // set linear transformation
+    cairo_set_matrix(cr, &aMatrix);
+
+    // setup line attributes
+    cairo_line_join_t eCairoLineJoin = CAIRO_LINE_JOIN_MITER;
+    switch (eLineJoin)
+    {
+        case basegfx::B2DLineJoin::Bevel:
+            eCairoLineJoin = CAIRO_LINE_JOIN_BEVEL;
+            break;
+        case basegfx::B2DLineJoin::Round:
+            eCairoLineJoin = CAIRO_LINE_JOIN_ROUND;
+            break;
+        case basegfx::B2DLineJoin::NONE:
+        case basegfx::B2DLineJoin::Miter:
+            eCairoLineJoin = CAIRO_LINE_JOIN_MITER;
+            break;
+    }
+
+    // convert miter minimum angle to miter limit
+    double fMiterLimit = 1.0 / sin(std::max(fMiterMinimumAngle, 0.01 * M_PI) / 2.0);
+
+    // setup cap attribute
+    cairo_line_cap_t eCairoLineCap(CAIRO_LINE_CAP_BUTT);
+
+    switch (eLineCap)
+    {
+        default: // css::drawing::LineCap_BUTT:
+        {
+            eCairoLineCap = CAIRO_LINE_CAP_BUTT;
+            break;
+        }
+        case css::drawing::LineCap_ROUND:
+        {
+            eCairoLineCap = CAIRO_LINE_CAP_ROUND;
+            break;
+        }
+        case css::drawing::LineCap_SQUARE:
+        {
+            eCairoLineCap = CAIRO_LINE_CAP_SQUARE;
+            break;
+        }
+    }
+
+    cairo_set_source_rgba(cr, rLineColor.GetRed() / 255.0, rLineColor.GetGreen() / 255.0,
+                          rLineColor.GetBlue() / 255.0, 1.0 - fTransparency);
+
+    cairo_set_line_join(cr, eCairoLineJoin);
+    cairo_set_line_cap(cr, eCairoLineCap);
+    cairo_set_line_width(cr, fLineWidth);
+    cairo_set_miter_limit(cr, fMiterLimit);
+
+    // try to access buffered data
+    std::shared_ptr<SystemDependentData_CairoPath> pSystemDependentData_CairoPath(
+        rPolyLine.getSystemDependentData<SystemDependentData_CairoPath>());
+
+    // MM01 need to do line dashing as fallback stuff here now
+    const double fDotDashLength(
+        nullptr != pStroke ? std::accumulate(pStroke->begin(), pStroke->end(), 0.0) : 0.0);
+    const bool bStrokeUsed(0.0 != fDotDashLength);
+    assert(!bStrokeUsed || (bStrokeUsed && pStroke));
+
+    // MM01 decide if to stroke directly
+    static const bool bDoDirectCairoStroke(true);
+
+    // MM01 activate to stroke directly
+    if (bDoDirectCairoStroke && bStrokeUsed)
+    {
+        cairo_set_dash(cr, pStroke->data(), pStroke->size(), 0.0);
+    }
+
+    if (!bDoDirectCairoStroke && pSystemDependentData_CairoPath)
+    {
+        // MM01 - check on stroke change. Used against not used, or if both used,
+        // equal or different?
+        const bool bStrokeWasUsed(!pSystemDependentData_CairoPath->getStroke().empty());
+
+        if (bStrokeWasUsed != bStrokeUsed
+            || (bStrokeUsed && *pStroke != pSystemDependentData_CairoPath->getStroke()))
+        {
+            // data invalid, forget
+            pSystemDependentData_CairoPath.reset();
+        }
+    }
+
+    // check for basegfx::B2DLineJoin::NONE to react accordingly
+    const bool bNoJoin(
+        (basegfx::B2DLineJoin::NONE == eLineJoin && basegfx::fTools::more(fLineWidth, 0.0)));
+
+    if (pSystemDependentData_CairoPath)
+    {
+        // check data validity
+        if (nullptr == pSystemDependentData_CairoPath->getCairoPath()
+            || pSystemDependentData_CairoPath->getNoJoin() != bNoJoin
+            || pSystemDependentData_CairoPath->getAntiAlias() != bAntiAlias
+            || bPixelSnapHairline /*tdf#124700*/)
+        {
+            // data invalid, forget
+            pSystemDependentData_CairoPath.reset();
+        }
+    }
+
+    if (pSystemDependentData_CairoPath)
+    {
+        // re-use data
+        cairo_append_path(cr, pSystemDependentData_CairoPath->getCairoPath());
+    }
+    else
+    {
+        // create data
+        size_t nSizeMeasure(0);
+
+        // MM01 need to do line dashing as fallback stuff here now
+        basegfx::B2DPolyPolygon aPolyPolygonLine;
+
+        if (!bDoDirectCairoStroke && bStrokeUsed)
+        {
+            // apply LineStyle
+            basegfx::utils::applyLineDashing(rPolyLine, // source
+                                             *pStroke, // pattern
+                                             &aPolyPolygonLine, // target for lines
+                                             nullptr, // target for gaps
+                                             fDotDashLength); // full length if available
+        }
+        else
+        {
+            // no line dashing or direct stroke, just copy
+            aPolyPolygonLine.append(rPolyLine);
+        }
+
+        // MM01 checked/verified for Cairo
+        for (sal_uInt32 a(0); a < aPolyPolygonLine.count(); a++)
+        {
+            const basegfx::B2DPolygon aPolyLine(aPolyPolygonLine.getB2DPolygon(a));
+
+            if (!bNoJoin)
+            {
+                // PixelOffset now reflected in linear transformation used
+                nSizeMeasure
+                    += AddPolygonToPath(cr, aPolyLine,
+                                        rObjectToDevice, // ObjectToDevice *without* LineDraw-Offset
+                                        !bAntiAlias, bPixelSnapHairline);
+            }
+            else
+            {
+                const sal_uInt32 nPointCount(aPolyLine.count());
+                const sal_uInt32 nEdgeCount(aPolyLine.isClosed() ? nPointCount : nPointCount - 1);
+                basegfx::B2DPolygon aEdge;
+
+                aEdge.append(aPolyLine.getB2DPoint(0));
+                aEdge.append(basegfx::B2DPoint(0.0, 0.0));
+
+                for (sal_uInt32 i(0); i < nEdgeCount; i++)
+                {
+                    const sal_uInt32 nNextIndex((i + 1) % nPointCount);
+                    aEdge.setB2DPoint(1, aPolyLine.getB2DPoint(nNextIndex));
+                    aEdge.setNextControlPoint(0, aPolyLine.getNextControlPoint(i));
+                    aEdge.setPrevControlPoint(1, aPolyLine.getPrevControlPoint(nNextIndex));
+
+                    // PixelOffset now reflected in linear transformation used
+                    nSizeMeasure += AddPolygonToPath(
+                        cr, aEdge,
+                        rObjectToDevice, // ObjectToDevice *without* LineDraw-Offset
+                        !bAntiAlias, bPixelSnapHairline);
+
+                    // prepare next step
+                    aEdge.setB2DPoint(0, aEdge.getB2DPoint(1));
+                }
+            }
+        }
+
+        // copy and add to buffering mechanism
+        if (!bPixelSnapHairline /*tdf#124700*/)
+        {
+            pSystemDependentData_CairoPath
+                = rPolyLine.addOrReplaceSystemDependentData<SystemDependentData_CairoPath>(
+                    ImplGetSystemDependentDataManager(), nSizeMeasure, cr, bNoJoin, bAntiAlias,
+                    pStroke);
+        }
+    }
+
+    // extract extents
+    if (pExtents)
+    {
+        *pExtents = getClippedStrokeDamage(cr);
+        // transform also extents (ranges) of damage so they can be correctly redrawn
+        pExtents->transform(aDamageMatrix);
+    }
+
+    // draw and consume
+    cairo_stroke(cr);
+
+    return true;
+}
+
+namespace
+{
+basegfx::B2DRange renderWithOperator(cairo_t* cr, const SalTwoRect& rTR, cairo_surface_t* source,
+                                     cairo_operator_t eOperator = CAIRO_OPERATOR_SOURCE)
+{
+    cairo_rectangle(cr, rTR.mnDestX, rTR.mnDestY, rTR.mnDestWidth, rTR.mnDestHeight);
+
+    basegfx::B2DRange extents = getClippedFillDamage(cr);
+
+    cairo_clip(cr);
+
+    cairo_translate(cr, rTR.mnDestX, rTR.mnDestY);
+    double fXScale = 1.0f;
+    double fYScale = 1.0f;
+    if (rTR.mnSrcWidth != 0 && rTR.mnSrcHeight != 0)
+    {
+        fXScale = static_cast<double>(rTR.mnDestWidth) / rTR.mnSrcWidth;
+        fYScale = static_cast<double>(rTR.mnDestHeight) / rTR.mnSrcHeight;
+        cairo_scale(cr, fXScale, fYScale);
+    }
+
+    cairo_save(cr);
+    cairo_set_source_surface(cr, source, -rTR.mnSrcX, -rTR.mnSrcY);
+
+    //tdf#133716 borders of upscaled images should not be blurred
+    cairo_pattern_t* sourcepattern = cairo_get_source(cr);
+    cairo_pattern_set_extend(sourcepattern, CAIRO_EXTEND_PAD);
+
+    cairo_set_operator(cr, eOperator);
+    cairo_paint(cr);
+    cairo_restore(cr);
+
+    return extents;
+}
+
+} // end anonymous ns
+
+basegfx::B2DRange CairoCommon::renderSource(cairo_t* cr, const SalTwoRect& rTR,
+                                            cairo_surface_t* source)
+{
+    return renderWithOperator(cr, rTR, source, CAIRO_OPERATOR_SOURCE);
+}
+
+void CairoCommon::copyWithOperator(const SalTwoRect& rTR, cairo_surface_t* source,
+                                   cairo_operator_t eOp, bool bAntiAlias)
+{
+    cairo_t* cr = getCairoContext(false, bAntiAlias);
+    clipRegion(cr);
+
+    basegfx::B2DRange extents = renderWithOperator(cr, rTR, source, eOp);
+
+    releaseCairoContext(cr, false, extents);
+}
+
+void CairoCommon::copySource(const SalTwoRect& rTR, cairo_surface_t* source, bool bAntiAlias)
+{
+    copyWithOperator(rTR, source, CAIRO_OPERATOR_SOURCE, bAntiAlias);
+}
+
+void CairoCommon::copyBitsCairo(const SalTwoRect& rTR, cairo_surface_t* pSourceSurface,
+                                bool bAntiAlias)
+{
+    SalTwoRect aTR(rTR);
+
+    cairo_surface_t* pCopy = nullptr;
+
+    if (pSourceSurface == getSurface())
+    {
+        //self copy is a problem, so dup source in that case
+        pCopy
+            = cairo_surface_create_similar(pSourceSurface, cairo_surface_get_content(getSurface()),
+                                           aTR.mnSrcWidth * m_fScale, aTR.mnSrcHeight * m_fScale);
+        dl_cairo_surface_set_device_scale(pCopy, m_fScale, m_fScale);
+        cairo_t* cr = cairo_create(pCopy);
+        cairo_set_source_surface(cr, pSourceSurface, -aTR.mnSrcX, -aTR.mnSrcY);
+        cairo_rectangle(cr, 0, 0, aTR.mnSrcWidth, aTR.mnSrcHeight);
+        cairo_fill(cr);
+        cairo_destroy(cr);
+
+        pSourceSurface = pCopy;
+
+        aTR.mnSrcX = 0;
+        aTR.mnSrcY = 0;
+    }
+
+    copySource(aTR, pSourceSurface, bAntiAlias);
+
+    if (pCopy)
+        cairo_surface_destroy(pCopy);
+}
+
+namespace
+{
+cairo_pattern_t* create_stipple()
+{
+    static unsigned char data[16] = { 0xFF, 0xFF, 0x00, 0x00, 0xFF, 0xFF, 0x00, 0x00,
+                                      0x00, 0x00, 0xFF, 0xFF, 0x00, 0x00, 0xFF, 0xFF };
+    cairo_surface_t* surface = cairo_image_surface_create_for_data(data, CAIRO_FORMAT_A8, 4, 4, 4);
+    cairo_pattern_t* pattern = cairo_pattern_create_for_surface(surface);
+    cairo_surface_destroy(surface);
+    cairo_pattern_set_extend(pattern, CAIRO_EXTEND_REPEAT);
+    cairo_pattern_set_filter(pattern, CAIRO_FILTER_NEAREST);
+    return pattern;
+}
+} // end anonymous ns
+
+#if defined CAIRO_VERSION && CAIRO_VERSION < CAIRO_VERSION_ENCODE(1, 10, 0)
+#define CAIRO_OPERATOR_DIFFERENCE (static_cast<cairo_operator_t>(23))
+#endif
+
+void CairoCommon::invert(const basegfx::B2DPolygon& rPoly, SalInvert nFlags, bool bAntiAlias)
+{
+    cairo_t* cr = getCairoContext(false, bAntiAlias);
+    clipRegion(cr);
+
+    // To make releaseCairoContext work, use empty extents
+    basegfx::B2DRange extents;
+
+    AddPolygonToPath(cr, rPoly, basegfx::B2DHomMatrix(), !bAntiAlias, false);
+
+    cairo_set_source_rgb(cr, 1.0, 1.0, 1.0);
+
+    if (cairo_version() >= CAIRO_VERSION_ENCODE(1, 10, 0))
+    {
+        cairo_set_operator(cr, CAIRO_OPERATOR_DIFFERENCE);
+    }
+    else
+    {
+        SAL_WARN("vcl.gdi", "SvpSalGraphics::invert, archaic cairo");
+    }
+
+    if (nFlags & SalInvert::TrackFrame)
+    {
+        cairo_set_line_width(cr, 2.0);
+        const double dashLengths[2] = { 4.0, 4.0 };
+        cairo_set_dash(cr, dashLengths, 2, 0);
+
+        extents = getClippedStrokeDamage(cr);
+        //see tdf#106577 under wayland, some pixel droppings seen, maybe we're
+        //out by one somewhere, or cairo_stroke_extents is confused by
+        //dashes/line width
+        if (!extents.isEmpty())
+        {
+            extents.grow(1);
+        }
+
+        cairo_stroke(cr);
+    }
+    else
+    {
+        extents = getClippedFillDamage(cr);
+
+        cairo_clip(cr);
+
+        if (nFlags & SalInvert::N50)
+        {
+            cairo_pattern_t* pattern = create_stipple();
+            cairo_surface_t* surface = cairo_surface_create_similar(
+                m_pSurface, cairo_surface_get_content(m_pSurface), extents.getWidth() * m_fScale,
+                extents.getHeight() * m_fScale);
+
+            dl_cairo_surface_set_device_scale(surface, m_fScale, m_fScale);
+            cairo_t* stipple_cr = cairo_create(surface);
+            cairo_set_source_rgb(stipple_cr, 1.0, 1.0, 1.0);
+            cairo_mask(stipple_cr, pattern);
+            cairo_pattern_destroy(pattern);
+            cairo_destroy(stipple_cr);
+            cairo_mask_surface(cr, surface, extents.getMinX(), extents.getMinY());
+            cairo_surface_destroy(surface);
+        }
+        else
+        {
+            cairo_paint(cr);
+        }
+    }
+
+    releaseCairoContext(cr, false, extents);
+}
+
+cairo_format_t getCairoFormat(const BitmapBuffer& rBuffer)
+{
+    cairo_format_t nFormat;
+#ifdef HAVE_CAIRO_FORMAT_RGB24_888
+    assert(rBuffer.mnBitCount == 32 || rBuffer.mnBitCount == 24 || rBuffer.mnBitCount == 1);
+#else
+    assert(rBuffer.mnBitCount == 32 || rBuffer.mnBitCount == 1);
+#endif
+
+    if (rBuffer.mnBitCount == 32)
+        nFormat = CAIRO_FORMAT_ARGB32;
+#ifdef HAVE_CAIRO_FORMAT_RGB24_888
+    else if (rBuffer.mnBitCount == 24)
+        nFormat = CAIRO_FORMAT_RGB24_888;
+#endif
+    else
+        nFormat = CAIRO_FORMAT_A1;
+    return nFormat;
+}
+
+namespace
+{
+bool isCairoCompatible(const BitmapBuffer* pBuffer)
+{
+    if (!pBuffer)
+        return false;
+
+        // We use Cairo that supports 24-bit RGB.
+#ifdef HAVE_CAIRO_FORMAT_RGB24_888
+    if (pBuffer->mnBitCount != 32 && pBuffer->mnBitCount != 24 && pBuffer->mnBitCount != 1)
+#else
+    if (pBuffer->mnBitCount != 32 && pBuffer->mnBitCount != 1)
+#endif
+        return false;
+
+    cairo_format_t nFormat = getCairoFormat(*pBuffer);
+    return (cairo_format_stride_for_width(nFormat, pBuffer->mnWidth) == pBuffer->mnScanlineSize);
+}
+}
+
+cairo_surface_t* CairoCommon::createCairoSurface(const BitmapBuffer* pBuffer)
+{
+    if (!isCairoCompatible(pBuffer))
+        return nullptr;
+
+    cairo_format_t nFormat = getCairoFormat(*pBuffer);
+    cairo_surface_t* target = cairo_image_surface_create_for_data(
+        pBuffer->mpBits, nFormat, pBuffer->mnWidth, pBuffer->mnHeight, pBuffer->mnScanlineSize);
+    if (cairo_surface_status(target) != CAIRO_STATUS_SUCCESS)
+    {
+        cairo_surface_destroy(target);
+        return nullptr;
+    }
+    return target;
+}
+
+std::unique_ptr<BitmapBuffer> FastConvert24BitRgbTo32BitCairo(const BitmapBuffer* pSrc)
+{
+    if (pSrc == nullptr)
+        return nullptr;
+
+    assert(pSrc->mnFormat == SVP_24BIT_FORMAT);
+    const tools::Long nWidth = pSrc->mnWidth;
+    const tools::Long nHeight = pSrc->mnHeight;
+    std::unique_ptr<BitmapBuffer> pDst(new BitmapBuffer);
+    pDst->mnFormat = (ScanlineFormat::N32BitTcArgb | ScanlineFormat::TopDown);
+    pDst->mnWidth = nWidth;
+    pDst->mnHeight = nHeight;
+    pDst->mnBitCount = 32;
+    pDst->maColorMask = pSrc->maColorMask;
+    pDst->maPalette = pSrc->maPalette;
+
+    tools::Long nScanlineBase;
+    const bool bFail = o3tl::checked_multiply<tools::Long>(pDst->mnBitCount, nWidth, nScanlineBase);
+    if (bFail)
+    {
+        SAL_WARN("vcl.gdi", "checked multiply failed");
+        pDst->mpBits = nullptr;
+        return nullptr;
+    }
+
+    pDst->mnScanlineSize = AlignedWidth4Bytes(nScanlineBase);
+    if (pDst->mnScanlineSize < nScanlineBase / 8)
+    {
+        SAL_WARN("vcl.gdi", "scanline calculation wraparound");
+        pDst->mpBits = nullptr;
+        return nullptr;
+    }
+
+    try
+    {
+        pDst->mpBits = new sal_uInt8[pDst->mnScanlineSize * nHeight];
+    }
+    catch (const std::bad_alloc&)
+    {
+        // memory exception, clean up
+        pDst->mpBits = nullptr;
+        return nullptr;
+    }
+
+    for (tools::Long y = 0; y < nHeight; ++y)
+    {
+        sal_uInt8* pS = pSrc->mpBits + y * pSrc->mnScanlineSize;
+        sal_uInt8* pD = pDst->mpBits + y * pDst->mnScanlineSize;
+        for (tools::Long x = 0; x < nWidth; ++x)
+        {
+#if defined(ANDROID) && !HAVE_FEATURE_ANDROID_LOK
+            static_assert((SVP_CAIRO_FORMAT & ~ScanlineFormat::TopDown)
+                              == ScanlineFormat::N32BitTcRgba,
+                          "Expected SVP_CAIRO_FORMAT set to N32BitTcBgra");
+            static_assert((SVP_24BIT_FORMAT & ~ScanlineFormat::TopDown)
+                              == ScanlineFormat::N24BitTcRgb,
+                          "Expected SVP_24BIT_FORMAT set to N24BitTcRgb");
+            pD[0] = pS[0];
+            pD[1] = pS[1];
+            pD[2] = pS[2];
+            pD[3] = 0xff; // Alpha
+#elif defined OSL_BIGENDIAN
+            static_assert((SVP_CAIRO_FORMAT & ~ScanlineFormat::TopDown)
+                              == ScanlineFormat::N32BitTcArgb,
+                          "Expected SVP_CAIRO_FORMAT set to N32BitTcBgra");
+            static_assert((SVP_24BIT_FORMAT & ~ScanlineFormat::TopDown)
+                              == ScanlineFormat::N24BitTcRgb,
+                          "Expected SVP_24BIT_FORMAT set to N24BitTcRgb");
+            pD[0] = 0xff; // Alpha
+            pD[1] = pS[0];
+            pD[2] = pS[1];
+            pD[3] = pS[2];
+#else
+            static_assert((SVP_CAIRO_FORMAT & ~ScanlineFormat::TopDown)
+                              == ScanlineFormat::N32BitTcBgra,
+                          "Expected SVP_CAIRO_FORMAT set to N32BitTcBgra");
+            static_assert((SVP_24BIT_FORMAT & ~ScanlineFormat::TopDown)
+                              == ScanlineFormat::N24BitTcBgr,
+                          "Expected SVP_24BIT_FORMAT set to N24BitTcBgr");
+            pD[0] = pS[0];
+            pD[1] = pS[1];
+            pD[2] = pS[2];
+            pD[3] = 0xff; // Alpha
+#endif
+
+            pS += 3;
+            pD += 4;
+        }
+    }
+
+    return pDst;
+}
+
+void Toggle1BitTransparency(const BitmapBuffer& rBuf)
+{
+    assert(rBuf.maPalette.GetBestIndex(BitmapColor(COL_BLACK)) == 0);
+    // TODO: make upper layers use standard alpha
+    if (getCairoFormat(rBuf) == CAIRO_FORMAT_A1)
+    {
+        const int nImageSize = rBuf.mnHeight * rBuf.mnScanlineSize;
+        unsigned char* pDst = rBuf.mpBits;
+        for (int i = nImageSize; --i >= 0; ++pDst)
+            *pDst = ~*pDst;
+    }
+}
+
+namespace
+{
+// check for env var that decides for using downscale pattern
+const char* pDisableDownScale(getenv("SAL_DISABLE_CAIRO_DOWNSCALE"));
+bool bDisableDownScale(nullptr != pDisableDownScale);
+}
+
+cairo_surface_t* SurfaceHelper::implCreateOrReuseDownscale(unsigned long nTargetWidth,
+                                                           unsigned long nTargetHeight)
+{
+    const unsigned long nSourceWidth(cairo_image_surface_get_width(pSurface));
+    const unsigned long nSourceHeight(cairo_image_surface_get_height(pSurface));
+
+    // zoomed in, need to stretch at paint, no pre-scale useful
+    if (nTargetWidth >= nSourceWidth || nTargetHeight >= nSourceHeight)
+    {
+        return pSurface;
+    }
+
+    // calculate downscale factor
+    unsigned long nWFactor(1);
+    unsigned long nW((nSourceWidth + 1) / 2);
+    unsigned long nHFactor(1);
+    unsigned long nH((nSourceHeight + 1) / 2);
+
+    while (nW > nTargetWidth && nW > 1)
+    {
+        nW = (nW + 1) / 2;
+        nWFactor *= 2;
+    }
+
+    while (nH > nTargetHeight && nH > 1)
+    {
+        nH = (nH + 1) / 2;
+        nHFactor *= 2;
+    }
+
+    if (1 == nWFactor && 1 == nHFactor)
+    {
+        // original size *is* best binary size, use it
+        return pSurface;
+    }
+
+    // go up one scale again - look for no change
+    nW = (1 == nWFactor) ? nTargetWidth : nW * 2;
+    nH = (1 == nHFactor) ? nTargetHeight : nH * 2;
+
+    // check if we have a downscaled version of required size
+    // bail out if the multiplication for the key would overflow
+    if (nW >= SAL_MAX_UINT32 || nH >= SAL_MAX_UINT32)
+        return pSurface;
+    const sal_uInt64 key((nW * static_cast<sal_uInt64>(SAL_MAX_UINT32)) + nH);
+    auto isHit(maDownscaled.find(key));
+
+    if (isHit != maDownscaled.end())
+    {
+        return isHit->second;
+    }
+
+    // create new surface in the targeted size
+    cairo_surface_t* pSurfaceTarget
+        = cairo_surface_create_similar(pSurface, cairo_surface_get_content(pSurface), nW, nH);
+
+    // made a version to scale self first that worked well, but would've
+    // been hard to support CAIRO_FORMAT_A1 including bit shifting, so
+    // I decided to go with cairo itself - use CAIRO_FILTER_FAST or
+    // CAIRO_FILTER_GOOD though. Please modify as needed for
+    // performance/quality
+    cairo_t* cr = cairo_create(pSurfaceTarget);
+    const double fScaleX(static_cast<double>(nW) / static_cast<double>(nSourceWidth));
+    const double fScaleY(static_cast<double>(nH) / static_cast<double>(nSourceHeight));
+    cairo_scale(cr, fScaleX, fScaleY);
+    cairo_set_source_surface(cr, pSurface, 0.0, 0.0);
+    cairo_pattern_set_filter(cairo_get_source(cr), CAIRO_FILTER_GOOD);
+    cairo_paint(cr);
+    cairo_destroy(cr);
+
+    // need to set device_scale for downscale surfaces to get
+    // them handled correctly
+    cairo_surface_set_device_scale(pSurfaceTarget, fScaleX, fScaleY);
+
+    // add entry to cached entries
+    maDownscaled[key] = pSurfaceTarget;
+
+    return pSurfaceTarget;
+}
+
+bool SurfaceHelper::isTrivial() const
+{
+    constexpr unsigned long nMinimalSquareSizeToBuffer(64 * 64);
+    const unsigned long nSourceWidth(cairo_image_surface_get_width(pSurface));
+    const unsigned long nSourceHeight(cairo_image_surface_get_height(pSurface));
+
+    return nSourceWidth * nSourceHeight < nMinimalSquareSizeToBuffer;
+}
+
+SurfaceHelper::SurfaceHelper()
+    : pSurface(nullptr)
+{
+}
+
+SurfaceHelper::~SurfaceHelper()
+{
+    cairo_surface_destroy(pSurface);
+    for (auto& candidate : maDownscaled)
+    {
+        cairo_surface_destroy(candidate.second);
+    }
+}
+
+cairo_surface_t* SurfaceHelper::getSurface(unsigned long nTargetWidth,
+                                           unsigned long nTargetHeight) const
+{
+    if (bDisableDownScale || 0 == nTargetWidth || 0 == nTargetHeight || !pSurface || isTrivial())
+    {
+        // caller asks for original or disabled or trivial (smaller then a minimal square size)
+        // also excludes zero cases for width/height after this point if need to prescale
+        return pSurface;
+    }
+
+    return const_cast<SurfaceHelper*>(this)->implCreateOrReuseDownscale(nTargetWidth,
+                                                                        nTargetHeight);
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/headless/SvpGraphicsBackend.cxx b/vcl/headless/SvpGraphicsBackend.cxx
new file mode 100644
index 000000000..209e2e880
--- /dev/null
+++ b/vcl/headless/SvpGraphicsBackend.cxx
@@ -0,0 +1,964 @@
+/* -*- 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 <headless/SvpGraphicsBackend.hxx>
+
+#include <sal/log.hxx>
+#include <basegfx/matrix/b2dhommatrixtools.hxx>
+#include <basegfx/polygon/b2dpolygontools.hxx>
+#include <vcl/BitmapTools.hxx>
+#include <headless/BitmapHelper.hxx>
+
+SvpGraphicsBackend::SvpGraphicsBackend(CairoCommon& rCairoCommon)
+    : m_rCairoCommon(rCairoCommon)
+{
+}
+
+void SvpGraphicsBackend::Init() {}
+
+void SvpGraphicsBackend::freeResources() {}
+
+bool SvpGraphicsBackend::setClipRegion(const vcl::Region& i_rClip)
+{
+    m_rCairoCommon.m_aClipRegion = i_rClip;
+    return true;
+}
+
+void SvpGraphicsBackend::ResetClipRegion() { m_rCairoCommon.m_aClipRegion.SetNull(); }
+
+sal_uInt16 SvpGraphicsBackend::GetBitCount() const
+{
+    if (cairo_surface_get_content(m_rCairoCommon.m_pSurface) != CAIRO_CONTENT_COLOR_ALPHA)
+        return 1;
+    return 32;
+}
+
+tools::Long SvpGraphicsBackend::GetGraphicsWidth() const
+{
+    return m_rCairoCommon.m_pSurface ? m_rCairoCommon.m_aFrameSize.getX() : 0;
+}
+
+void SvpGraphicsBackend::SetLineColor() { m_rCairoCommon.m_aLineColor = SALCOLOR_NONE; }
+
+void SvpGraphicsBackend::SetLineColor(Color nColor) { m_rCairoCommon.m_aLineColor = nColor; }
+
+void SvpGraphicsBackend::SetFillColor() { m_rCairoCommon.m_aFillColor = SALCOLOR_NONE; }
+
+void SvpGraphicsBackend::SetFillColor(Color nColor) { m_rCairoCommon.m_aFillColor = nColor; }
+
+void SvpGraphicsBackend::SetXORMode(bool bSet, bool /*bInvertOnly*/)
+{
+    m_rCairoCommon.m_ePaintMode = bSet ? PaintMode::Xor : PaintMode::Over;
+}
+
+void SvpGraphicsBackend::SetROPLineColor(SalROPColor nROPColor)
+{
+    switch (nROPColor)
+    {
+        case SalROPColor::N0:
+            m_rCairoCommon.m_aLineColor = Color(0, 0, 0);
+            break;
+        case SalROPColor::N1:
+            m_rCairoCommon.m_aLineColor = Color(0xff, 0xff, 0xff);
+            break;
+        case SalROPColor::Invert:
+            m_rCairoCommon.m_aLineColor = Color(0xff, 0xff, 0xff);
+            break;
+    }
+}
+
+void SvpGraphicsBackend::SetROPFillColor(SalROPColor nROPColor)
+{
+    switch (nROPColor)
+    {
+        case SalROPColor::N0:
+            m_rCairoCommon.m_aFillColor = Color(0, 0, 0);
+            break;
+        case SalROPColor::N1:
+            m_rCairoCommon.m_aFillColor = Color(0xff, 0xff, 0xff);
+            break;
+        case SalROPColor::Invert:
+            m_rCairoCommon.m_aFillColor = Color(0xff, 0xff, 0xff);
+            break;
+    }
+}
+
+void SvpGraphicsBackend::drawPixel(tools::Long nX, tools::Long nY)
+{
+    if (m_rCairoCommon.m_aLineColor != SALCOLOR_NONE)
+    {
+        drawPixel(nX, nY, m_rCairoCommon.m_aLineColor);
+    }
+}
+
+void SvpGraphicsBackend::drawPixel(tools::Long nX, tools::Long nY, Color aColor)
+{
+    cairo_t* cr = m_rCairoCommon.getCairoContext(true, getAntiAlias());
+    m_rCairoCommon.clipRegion(cr);
+
+    cairo_rectangle(cr, nX, nY, 1, 1);
+    m_rCairoCommon.applyColor(cr, aColor, 0.0);
+    cairo_fill(cr);
+
+    basegfx::B2DRange extents = getClippedFillDamage(cr);
+    m_rCairoCommon.releaseCairoContext(cr, true, extents);
+}
+
+void SvpGraphicsBackend::drawLine(tools::Long nX1, tools::Long nY1, tools::Long nX2,
+                                  tools::Long nY2)
+{
+    basegfx::B2DPolygon aPoly;
+
+    // PixelOffset used: To not mix with possible PixelSnap, cannot do
+    // directly on coordinates as tried before - despite being already 'snapped'
+    // due to being integer. If it would be directly added here, it would be
+    // 'snapped' again when !getAntiAlias(), losing the (0.5, 0.5) offset
+    aPoly.append(basegfx::B2DPoint(nX1, nY1));
+    aPoly.append(basegfx::B2DPoint(nX2, nY2));
+
+    cairo_t* cr = m_rCairoCommon.getCairoContext(false, getAntiAlias());
+    m_rCairoCommon.clipRegion(cr);
+
+    // PixelOffset used: Set PixelOffset as linear transformation
+    cairo_matrix_t aMatrix;
+    cairo_matrix_init_translate(&aMatrix, 0.5, 0.5);
+    cairo_set_matrix(cr, &aMatrix);
+
+    AddPolygonToPath(cr, aPoly, basegfx::B2DHomMatrix(), !getAntiAlias(), false);
+
+    m_rCairoCommon.applyColor(cr, m_rCairoCommon.m_aLineColor);
+
+    basegfx::B2DRange extents = getClippedStrokeDamage(cr);
+    extents.transform(basegfx::utils::createTranslateB2DHomMatrix(0.5, 0.5));
+
+    cairo_stroke(cr);
+
+    m_rCairoCommon.releaseCairoContext(cr, false, extents);
+}
+
+void SvpGraphicsBackend::drawRect(tools::Long nX, tools::Long nY, tools::Long nWidth,
+                                  tools::Long nHeight)
+{
+    implDrawRect(nX, nY, nWidth, nHeight);
+}
+
+void SvpGraphicsBackend::implDrawRect(double nX, double nY, double nWidth, double nHeight)
+{
+    // because of the -1 hack we have to do fill and draw separately
+    Color aOrigFillColor = m_rCairoCommon.m_aFillColor;
+    Color aOrigLineColor = m_rCairoCommon.m_aLineColor;
+    m_rCairoCommon.m_aFillColor = SALCOLOR_NONE;
+    m_rCairoCommon.m_aLineColor = SALCOLOR_NONE;
+
+    if (aOrigFillColor != SALCOLOR_NONE)
+    {
+        basegfx::B2DPolygon aRect = basegfx::utils::createPolygonFromRect(
+            basegfx::B2DRectangle(nX, nY, nX + nWidth, nY + nHeight));
+        m_rCairoCommon.m_aFillColor = aOrigFillColor;
+
+        drawPolyPolygon(basegfx::B2DHomMatrix(), basegfx::B2DPolyPolygon(aRect), 0.0);
+
+        m_rCairoCommon.m_aFillColor = SALCOLOR_NONE;
+    }
+
+    if (aOrigLineColor != SALCOLOR_NONE)
+    {
+        // need same -1 hack as X11SalGraphicsImpl::drawRect
+        basegfx::B2DPolygon aRect = basegfx::utils::createPolygonFromRect(
+            basegfx::B2DRectangle(nX, nY, nX + nWidth - 1, nY + nHeight - 1));
+        m_rCairoCommon.m_aLineColor = aOrigLineColor;
+
+        drawPolyPolygon(basegfx::B2DHomMatrix(), basegfx::B2DPolyPolygon(aRect), 0.0);
+
+        m_rCairoCommon.m_aLineColor = SALCOLOR_NONE;
+    }
+
+    m_rCairoCommon.m_aFillColor = aOrigFillColor;
+    m_rCairoCommon.m_aLineColor = aOrigLineColor;
+}
+
+void SvpGraphicsBackend::drawPolyLine(sal_uInt32 nPoints, const Point* pPtAry)
+{
+    basegfx::B2DPolygon aPoly;
+    aPoly.append(basegfx::B2DPoint(pPtAry->getX(), pPtAry->getY()), nPoints);
+    for (sal_uInt32 i = 1; i < nPoints; ++i)
+        aPoly.setB2DPoint(i, basegfx::B2DPoint(pPtAry[i].getX(), pPtAry[i].getY()));
+    aPoly.setClosed(false);
+
+    drawPolyLine(basegfx::B2DHomMatrix(), aPoly, 0.0, 1.0,
+                 nullptr, // MM01
+                 basegfx::B2DLineJoin::Miter, css::drawing::LineCap_BUTT,
+                 basegfx::deg2rad(15.0) /*default*/, false);
+}
+
+void SvpGraphicsBackend::drawPolygon(sal_uInt32 nPoints, const Point* pPtAry)
+{
+    basegfx::B2DPolygon aPoly;
+    aPoly.append(basegfx::B2DPoint(pPtAry->getX(), pPtAry->getY()), nPoints);
+    for (sal_uInt32 i = 1; i < nPoints; ++i)
+        aPoly.setB2DPoint(i, basegfx::B2DPoint(pPtAry[i].getX(), pPtAry[i].getY()));
+
+    drawPolyPolygon(basegfx::B2DHomMatrix(), basegfx::B2DPolyPolygon(aPoly), 0.0);
+}
+
+void SvpGraphicsBackend::drawPolyPolygon(sal_uInt32 nPoly, const sal_uInt32* pPointCounts,
+                                         const Point** pPtAry)
+{
+    basegfx::B2DPolyPolygon aPolyPoly;
+    for (sal_uInt32 nPolygon = 0; nPolygon < nPoly; ++nPolygon)
+    {
+        sal_uInt32 nPoints = pPointCounts[nPolygon];
+        if (nPoints)
+        {
+            const Point* pPoints = pPtAry[nPolygon];
+            basegfx::B2DPolygon aPoly;
+            aPoly.append(basegfx::B2DPoint(pPoints->getX(), pPoints->getY()), nPoints);
+            for (sal_uInt32 i = 1; i < nPoints; ++i)
+                aPoly.setB2DPoint(i, basegfx::B2DPoint(pPoints[i].getX(), pPoints[i].getY()));
+
+            aPolyPoly.append(aPoly);
+        }
+    }
+
+    drawPolyPolygon(basegfx::B2DHomMatrix(), aPolyPoly, 0.0);
+}
+
+bool SvpGraphicsBackend::drawPolyPolygon(const basegfx::B2DHomMatrix& rObjectToDevice,
+                                         const basegfx::B2DPolyPolygon& rPolyPolygon,
+                                         double fTransparency)
+{
+    const bool bHasFill(m_rCairoCommon.m_aFillColor != SALCOLOR_NONE);
+    const bool bHasLine(m_rCairoCommon.m_aLineColor != SALCOLOR_NONE);
+
+    if (0 == rPolyPolygon.count() || !(bHasFill || bHasLine) || fTransparency < 0.0
+        || fTransparency >= 1.0)
+    {
+        return true;
+    }
+
+    // don't bother trying to draw stuff which is effectively invisible
+    basegfx::B2DRange aPolygonRange = rPolyPolygon.getB2DRange();
+    aPolygonRange.transform(rObjectToDevice);
+    if (aPolygonRange.getWidth() < 0.1 || aPolygonRange.getHeight() < 0.1)
+        return true;
+
+    cairo_t* cr = m_rCairoCommon.getCairoContext(true, getAntiAlias());
+    m_rCairoCommon.clipRegion(cr);
+
+    // Set full (Object-to-Device) transformation - if used
+    if (!rObjectToDevice.isIdentity())
+    {
+        cairo_matrix_t aMatrix;
+
+        cairo_matrix_init(&aMatrix, rObjectToDevice.get(0, 0), rObjectToDevice.get(1, 0),
+                          rObjectToDevice.get(0, 1), rObjectToDevice.get(1, 1),
+                          rObjectToDevice.get(0, 2), rObjectToDevice.get(1, 2));
+        cairo_set_matrix(cr, &aMatrix);
+    }
+
+    // To make releaseCairoContext work, use empty extents
+    basegfx::B2DRange extents;
+
+    if (bHasFill)
+    {
+        add_polygon_path(cr, rPolyPolygon, rObjectToDevice, !getAntiAlias());
+
+        m_rCairoCommon.applyColor(cr, m_rCairoCommon.m_aFillColor, fTransparency);
+        // Get FillDamage (will be extended for LineDamage below)
+        extents = getClippedFillDamage(cr);
+
+        cairo_fill(cr);
+    }
+
+    if (bHasLine)
+    {
+        // PixelOffset used: Set PixelOffset as linear transformation
+        cairo_matrix_t aMatrix;
+        cairo_matrix_init_translate(&aMatrix, 0.5, 0.5);
+        cairo_set_matrix(cr, &aMatrix);
+
+        add_polygon_path(cr, rPolyPolygon, rObjectToDevice, !getAntiAlias());
+
+        m_rCairoCommon.applyColor(cr, m_rCairoCommon.m_aLineColor, fTransparency);
+
+        // expand with possible StrokeDamage
+        basegfx::B2DRange stroke_extents = getClippedStrokeDamage(cr);
+        stroke_extents.transform(basegfx::utils::createTranslateB2DHomMatrix(0.5, 0.5));
+        extents.expand(stroke_extents);
+
+        cairo_stroke(cr);
+    }
+
+    // if transformation has been applied, transform also extents (ranges)
+    // of damage so they can be correctly redrawn
+    extents.transform(rObjectToDevice);
+    m_rCairoCommon.releaseCairoContext(cr, true, extents);
+
+    return true;
+}
+
+bool SvpGraphicsBackend::drawPolyLine(const basegfx::B2DHomMatrix& rObjectToDevice,
+                                      const basegfx::B2DPolygon& rPolyLine, double fTransparency,
+                                      double fLineWidth, const std::vector<double>* pStroke,
+                                      basegfx::B2DLineJoin eLineJoin,
+                                      css::drawing::LineCap eLineCap, double fMiterMinimumAngle,
+                                      bool bPixelSnapHairline)
+{
+    // short circuit if there is nothing to do
+    if (0 == rPolyLine.count() || fTransparency < 0.0 || fTransparency >= 1.0)
+    {
+        return true;
+    }
+
+    // Wrap call to static version of ::drawPolyLine by
+    // preparing/getting some local data and parameters
+    // due to usage in vcl/unx/generic/gdi/salgdi.cxx.
+    // This is mainly about extended handling of extents
+    // and the way destruction of CairoContext is handled
+    // due to current XOR stuff
+    cairo_t* cr = m_rCairoCommon.getCairoContext(false, getAntiAlias());
+    basegfx::B2DRange aExtents;
+    m_rCairoCommon.clipRegion(cr);
+
+    bool bRetval(CairoCommon::drawPolyLine(cr, &aExtents, m_rCairoCommon.m_aLineColor,
+                                           getAntiAlias(), rObjectToDevice, rPolyLine,
+                                           fTransparency, fLineWidth, pStroke, eLineJoin, eLineCap,
+                                           fMiterMinimumAngle, bPixelSnapHairline));
+
+    m_rCairoCommon.releaseCairoContext(cr, false, aExtents);
+
+    return bRetval;
+}
+
+bool SvpGraphicsBackend::drawPolyLineBezier(sal_uInt32, const Point*, const PolyFlags*)
+{
+    SAL_INFO("vcl.gdi", "unsupported SvpSalGraphics::drawPolyLineBezier case");
+    return false;
+}
+
+bool SvpGraphicsBackend::drawPolygonBezier(sal_uInt32, const Point*, const PolyFlags*)
+{
+    SAL_INFO("vcl.gdi", "unsupported SvpSalGraphics::drawPolygonBezier case");
+    return false;
+}
+
+bool SvpGraphicsBackend::drawPolyPolygonBezier(sal_uInt32, const sal_uInt32*, const Point* const*,
+                                               const PolyFlags* const*)
+{
+    SAL_INFO("vcl.gdi", "unsupported SvpSalGraphics::drawPolyPolygonBezier case");
+    return false;
+}
+
+void SvpGraphicsBackend::copyArea(tools::Long nDestX, tools::Long nDestY, tools::Long nSrcX,
+                                  tools::Long nSrcY, tools::Long nSrcWidth, tools::Long nSrcHeight,
+                                  bool /*bWindowInvalidate*/)
+{
+    SalTwoRect aTR(nSrcX, nSrcY, nSrcWidth, nSrcHeight, nDestX, nDestY, nSrcWidth, nSrcHeight);
+
+    cairo_surface_t* source = m_rCairoCommon.m_pSurface;
+    m_rCairoCommon.copyBitsCairo(aTR, source, getAntiAlias());
+}
+
+void SvpGraphicsBackend::copyBits(const SalTwoRect& rTR, SalGraphics* pSrcGraphics)
+{
+    cairo_surface_t* source = nullptr;
+
+    if (pSrcGraphics)
+    {
+        SvpGraphicsBackend* pSrc = static_cast<SvpGraphicsBackend*>(pSrcGraphics->GetImpl());
+        source = pSrc->m_rCairoCommon.m_pSurface;
+    }
+    else
+    {
+        source = m_rCairoCommon.m_pSurface;
+    }
+
+    m_rCairoCommon.copyBitsCairo(rTR, source, getAntiAlias());
+}
+
+void SvpGraphicsBackend::drawBitmap(const SalTwoRect& rPosAry, const SalBitmap& rSalBitmap)
+{
+    // MM02 try to access buffered BitmapHelper
+    std::shared_ptr<BitmapHelper> aSurface;
+    tryToUseSourceBuffer(rSalBitmap, aSurface);
+    cairo_surface_t* source = aSurface->getSurface(rPosAry.mnDestWidth, rPosAry.mnDestHeight);
+
+    if (!source)
+    {
+        SAL_WARN("vcl.gdi", "unsupported SvpSalGraphics::drawAlphaBitmap case");
+        return;
+    }
+
+#if 0 // LO code is not yet bitmap32-ready.
+    // if m_bSupportsBitmap32 becomes true for Svp revisit this
+    m_rCairoCommon.copyWithOperator(rPosAry, source, CAIRO_OPERATOR_OVER, getAntiAlias());
+#else
+    m_rCairoCommon.copyWithOperator(rPosAry, source, CAIRO_OPERATOR_SOURCE, getAntiAlias());
+#endif
+}
+
+void SvpGraphicsBackend::drawBitmap(const SalTwoRect& rPosAry, const SalBitmap& rSalBitmap,
+                                    const SalBitmap& rTransparentBitmap)
+{
+    drawAlphaBitmap(rPosAry, rSalBitmap, rTransparentBitmap);
+}
+
+void SvpGraphicsBackend::drawMask(const SalTwoRect& rTR, const SalBitmap& rSalBitmap,
+                                  Color nMaskColor)
+{
+    /** creates an image from the given rectangle, replacing all black pixels
+     *  with nMaskColor and make all other full transparent */
+    // MM02 here decided *against* using buffered BitmapHelper
+    // because the data gets somehow 'unmuliplied'. This may also be
+    // done just once, but I am not sure if this is safe to do.
+    // So for now dispense re-using data here.
+    BitmapHelper aSurface(rSalBitmap, true); // The mask is argb32
+    if (!aSurface.getSurface())
+    {
+        SAL_WARN("vcl.gdi", "unsupported SvpSalGraphics::drawMask case");
+        return;
+    }
+    sal_Int32 nStride;
+    unsigned char* mask_data = aSurface.getBits(nStride);
+#if !ENABLE_WASM_STRIP_PREMULTIPLY
+    vcl::bitmap::lookup_table const& unpremultiply_table = vcl::bitmap::get_unpremultiply_table();
+#endif
+    for (tools::Long y = rTR.mnSrcY; y < rTR.mnSrcY + rTR.mnSrcHeight; ++y)
+    {
+        unsigned char* row = mask_data + (nStride * y);
+        unsigned char* data = row + (rTR.mnSrcX * 4);
+        for (tools::Long x = rTR.mnSrcX; x < rTR.mnSrcX + rTR.mnSrcWidth; ++x)
+        {
+            sal_uInt8 a = data[SVP_CAIRO_ALPHA];
+#if ENABLE_WASM_STRIP_PREMULTIPLY
+            sal_uInt8 b = vcl::bitmap::unpremultiply(a, data[SVP_CAIRO_BLUE]);
+            sal_uInt8 g = vcl::bitmap::unpremultiply(a, data[SVP_CAIRO_GREEN]);
+            sal_uInt8 r = vcl::bitmap::unpremultiply(a, data[SVP_CAIRO_RED]);
+#else
+            sal_uInt8 b = unpremultiply_table[a][data[SVP_CAIRO_BLUE]];
+            sal_uInt8 g = unpremultiply_table[a][data[SVP_CAIRO_GREEN]];
+            sal_uInt8 r = unpremultiply_table[a][data[SVP_CAIRO_RED]];
+#endif
+            if (r == 0 && g == 0 && b == 0)
+            {
+                data[0] = nMaskColor.GetBlue();
+                data[1] = nMaskColor.GetGreen();
+                data[2] = nMaskColor.GetRed();
+                data[3] = 0xff;
+            }
+            else
+            {
+                data[0] = 0;
+                data[1] = 0;
+                data[2] = 0;
+                data[3] = 0;
+            }
+            data += 4;
+        }
+    }
+    aSurface.mark_dirty();
+
+    cairo_t* cr = m_rCairoCommon.getCairoContext(false, getAntiAlias());
+    m_rCairoCommon.clipRegion(cr);
+
+    cairo_rectangle(cr, rTR.mnDestX, rTR.mnDestY, rTR.mnDestWidth, rTR.mnDestHeight);
+
+    basegfx::B2DRange extents = getClippedFillDamage(cr);
+
+    cairo_clip(cr);
+
+    cairo_translate(cr, rTR.mnDestX, rTR.mnDestY);
+    double fXScale = static_cast<double>(rTR.mnDestWidth) / rTR.mnSrcWidth;
+    double fYScale = static_cast<double>(rTR.mnDestHeight) / rTR.mnSrcHeight;
+    cairo_scale(cr, fXScale, fYScale);
+    cairo_set_source_surface(cr, aSurface.getSurface(), -rTR.mnSrcX, -rTR.mnSrcY);
+
+    //tdf#133716 borders of upscaled images should not be blurred
+    cairo_pattern_t* sourcepattern = cairo_get_source(cr);
+    cairo_pattern_set_extend(sourcepattern, CAIRO_EXTEND_PAD);
+
+    cairo_paint(cr);
+
+    m_rCairoCommon.releaseCairoContext(cr, false, extents);
+}
+
+std::shared_ptr<SalBitmap> SvpGraphicsBackend::getBitmap(tools::Long nX, tools::Long nY,
+                                                         tools::Long nWidth, tools::Long nHeight)
+{
+    std::shared_ptr<SvpSalBitmap> pBitmap = std::make_shared<SvpSalBitmap>();
+    BitmapPalette aPal;
+    vcl::PixelFormat ePixelFormat = vcl::PixelFormat::INVALID;
+    if (GetBitCount() == 1)
+    {
+        ePixelFormat = vcl::PixelFormat::N1_BPP;
+        aPal.SetEntryCount(2);
+        aPal[0] = COL_BLACK;
+        aPal[1] = COL_WHITE;
+    }
+    else
+    {
+        ePixelFormat = vcl::PixelFormat::N32_BPP;
+    }
+
+    if (!pBitmap->Create(Size(nWidth, nHeight), ePixelFormat, aPal))
+    {
+        SAL_WARN("vcl.gdi", "SvpSalGraphics::getBitmap, cannot create bitmap");
+        return nullptr;
+    }
+
+    cairo_surface_t* target = CairoCommon::createCairoSurface(pBitmap->GetBuffer());
+    if (!target)
+    {
+        SAL_WARN("vcl.gdi", "SvpSalGraphics::getBitmap, cannot create cairo surface");
+        return nullptr;
+    }
+    cairo_t* cr = cairo_create(target);
+
+    SalTwoRect aTR(nX, nY, nWidth, nHeight, 0, 0, nWidth, nHeight);
+    CairoCommon::renderSource(cr, aTR, m_rCairoCommon.m_pSurface);
+
+    cairo_destroy(cr);
+    cairo_surface_destroy(target);
+
+    Toggle1BitTransparency(*pBitmap->GetBuffer());
+
+    return pBitmap;
+}
+
+void SvpGraphicsBackend::drawBitmapBuffer(const SalTwoRect& rTR, const BitmapBuffer* pBuffer,
+                                          cairo_operator_t eOp)
+{
+    cairo_surface_t* source = CairoCommon::createCairoSurface(pBuffer);
+    m_rCairoCommon.copyWithOperator(rTR, source, eOp, getAntiAlias());
+    cairo_surface_destroy(source);
+}
+
+Color SvpGraphicsBackend::getPixel(tools::Long nX, tools::Long nY)
+{
+#if CAIRO_VERSION >= CAIRO_VERSION_ENCODE(1, 12, 0)
+    cairo_surface_t* target
+        = cairo_surface_create_similar_image(m_rCairoCommon.m_pSurface, CAIRO_FORMAT_ARGB32, 1, 1);
+#else
+    cairo_surface_t* target = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, 1, 1);
+#endif
+
+    cairo_t* cr = cairo_create(target);
+
+    cairo_rectangle(cr, 0, 0, 1, 1);
+    cairo_set_source_surface(cr, m_rCairoCommon.m_pSurface, -nX, -nY);
+    cairo_paint(cr);
+    cairo_destroy(cr);
+
+    cairo_surface_flush(target);
+#if !ENABLE_WASM_STRIP_PREMULTIPLY
+    vcl::bitmap::lookup_table const& unpremultiply_table = vcl::bitmap::get_unpremultiply_table();
+#endif
+    unsigned char* data = cairo_image_surface_get_data(target);
+    sal_uInt8 a = data[SVP_CAIRO_ALPHA];
+#if ENABLE_WASM_STRIP_PREMULTIPLY
+    sal_uInt8 b = vcl::bitmap::unpremultiply(a, data[SVP_CAIRO_BLUE]);
+    sal_uInt8 g = vcl::bitmap::unpremultiply(a, data[SVP_CAIRO_GREEN]);
+    sal_uInt8 r = vcl::bitmap::unpremultiply(a, data[SVP_CAIRO_RED]);
+#else
+    sal_uInt8 b = unpremultiply_table[a][data[SVP_CAIRO_BLUE]];
+    sal_uInt8 g = unpremultiply_table[a][data[SVP_CAIRO_GREEN]];
+    sal_uInt8 r = unpremultiply_table[a][data[SVP_CAIRO_RED]];
+#endif
+    Color aColor(ColorAlpha, a, r, g, b);
+    cairo_surface_destroy(target);
+
+    return aColor;
+}
+
+void SvpGraphicsBackend::invert(tools::Long nX, tools::Long nY, tools::Long nWidth,
+                                tools::Long nHeight, SalInvert nFlags)
+{
+    basegfx::B2DPolygon aRect = basegfx::utils::createPolygonFromRect(
+        basegfx::B2DRectangle(nX, nY, nX + nWidth, nY + nHeight));
+
+    m_rCairoCommon.invert(aRect, nFlags, getAntiAlias());
+}
+
+void SvpGraphicsBackend::invert(sal_uInt32 nPoints, const Point* pPtAry, SalInvert nFlags)
+{
+    basegfx::B2DPolygon aPoly;
+    aPoly.append(basegfx::B2DPoint(pPtAry->getX(), pPtAry->getY()), nPoints);
+    for (sal_uInt32 i = 1; i < nPoints; ++i)
+        aPoly.setB2DPoint(i, basegfx::B2DPoint(pPtAry[i].getX(), pPtAry[i].getY()));
+    aPoly.setClosed(true);
+
+    m_rCairoCommon.invert(aPoly, nFlags, getAntiAlias());
+}
+
+bool SvpGraphicsBackend::drawEPS(tools::Long /*nX*/, tools::Long /*nY*/, tools::Long /*nWidth*/,
+                                 tools::Long /*nHeight*/, void* /*pPtr*/, sal_uInt32 /*nSize*/)
+{
+    return false;
+}
+
+bool SvpGraphicsBackend::blendBitmap(const SalTwoRect& /*rPosAry*/, const SalBitmap& /*rBitmap*/)
+{
+    return false;
+}
+
+bool SvpGraphicsBackend::blendAlphaBitmap(const SalTwoRect& /*rPosAry*/,
+                                          const SalBitmap& /*rSrcBitmap*/,
+                                          const SalBitmap& /*rMaskBitmap*/,
+                                          const SalBitmap& /*rAlphaBitmap*/)
+{
+    return false;
+}
+
+bool SvpGraphicsBackend::drawAlphaBitmap(const SalTwoRect& rTR, const SalBitmap& rSourceBitmap,
+                                         const SalBitmap& rAlphaBitmap)
+{
+    if (rAlphaBitmap.GetBitCount() != 8 && rAlphaBitmap.GetBitCount() != 1)
+    {
+        SAL_WARN("vcl.gdi", "unsupported SvpSalGraphics::drawAlphaBitmap alpha depth case: "
+                                << rAlphaBitmap.GetBitCount());
+        return false;
+    }
+
+    // MM02 try to access buffered BitmapHelper
+    std::shared_ptr<BitmapHelper> aSurface;
+    tryToUseSourceBuffer(rSourceBitmap, aSurface);
+    cairo_surface_t* source = aSurface->getSurface(rTR.mnDestWidth, rTR.mnDestHeight);
+
+    if (!source)
+    {
+        SAL_WARN("vcl.gdi", "unsupported SvpSalGraphics::drawAlphaBitmap case");
+        return false;
+    }
+
+    // MM02 try to access buffered MaskHelper
+    std::shared_ptr<MaskHelper> aMask;
+    tryToUseMaskBuffer(rAlphaBitmap, aMask);
+    cairo_surface_t* mask = aMask->getSurface(rTR.mnDestWidth, rTR.mnDestHeight);
+
+    if (!mask)
+    {
+        SAL_WARN("vcl.gdi", "unsupported SvpSalGraphics::drawAlphaBitmap case");
+        return false;
+    }
+
+    cairo_t* cr = m_rCairoCommon.getCairoContext(false, getAntiAlias());
+    m_rCairoCommon.clipRegion(cr);
+
+    cairo_rectangle(cr, rTR.mnDestX, rTR.mnDestY, rTR.mnDestWidth, rTR.mnDestHeight);
+
+    basegfx::B2DRange extents = getClippedFillDamage(cr);
+
+    cairo_clip(cr);
+
+    cairo_pattern_t* maskpattern = cairo_pattern_create_for_surface(mask);
+    cairo_translate(cr, rTR.mnDestX, rTR.mnDestY);
+    double fXScale = static_cast<double>(rTR.mnDestWidth) / rTR.mnSrcWidth;
+    double fYScale = static_cast<double>(rTR.mnDestHeight) / rTR.mnSrcHeight;
+    cairo_scale(cr, fXScale, fYScale);
+    cairo_set_source_surface(cr, source, -rTR.mnSrcX, -rTR.mnSrcY);
+
+    cairo_pattern_t* sourcepattern = cairo_get_source(cr);
+
+    //tdf#133716 borders of upscaled images should not be blurred
+    //tdf#114117 when stretching a single or multi pixel width/height source to fit an area
+    //the image will be extended into that size.
+    cairo_pattern_set_extend(sourcepattern, CAIRO_EXTEND_PAD);
+    cairo_pattern_set_extend(maskpattern, CAIRO_EXTEND_PAD);
+
+    //this block is just "cairo_mask_surface", but we have to make it explicit
+    //because of the cairo_pattern_set_filter etc we may want applied
+    cairo_matrix_t matrix;
+    cairo_matrix_init_translate(&matrix, rTR.mnSrcX, rTR.mnSrcY);
+    cairo_pattern_set_matrix(maskpattern, &matrix);
+    cairo_mask(cr, maskpattern);
+
+    cairo_pattern_destroy(maskpattern);
+
+    m_rCairoCommon.releaseCairoContext(cr, false, extents);
+
+    return true;
+}
+
+bool SvpGraphicsBackend::drawTransformedBitmap(const basegfx::B2DPoint& rNull,
+                                               const basegfx::B2DPoint& rX,
+                                               const basegfx::B2DPoint& rY,
+                                               const SalBitmap& rSourceBitmap,
+                                               const SalBitmap* pAlphaBitmap, double fAlpha)
+{
+    if (pAlphaBitmap && pAlphaBitmap->GetBitCount() != 8 && pAlphaBitmap->GetBitCount() != 1)
+    {
+        SAL_WARN("vcl.gdi", "unsupported SvpSalGraphics::drawTransformedBitmap alpha depth case: "
+                                << pAlphaBitmap->GetBitCount());
+        return false;
+    }
+
+    if (fAlpha != 1.0)
+        return false;
+
+    // MM02 try to access buffered BitmapHelper
+    std::shared_ptr<BitmapHelper> aSurface;
+    tryToUseSourceBuffer(rSourceBitmap, aSurface);
+    const tools::Long nDestWidth(basegfx::fround(basegfx::B2DVector(rX - rNull).getLength()));
+    const tools::Long nDestHeight(basegfx::fround(basegfx::B2DVector(rY - rNull).getLength()));
+    cairo_surface_t* source(aSurface->getSurface(nDestWidth, nDestHeight));
+
+    if (!source)
+    {
+        SAL_WARN("vcl.gdi", "unsupported SvpSalGraphics::drawTransformedBitmap case");
+        return false;
+    }
+
+    // MM02 try to access buffered MaskHelper
+    std::shared_ptr<MaskHelper> aMask;
+    if (nullptr != pAlphaBitmap)
+    {
+        tryToUseMaskBuffer(*pAlphaBitmap, aMask);
+    }
+
+    // access cairo_surface_t from MaskHelper
+    cairo_surface_t* mask(nullptr);
+    if (aMask)
+    {
+        mask = aMask->getSurface(nDestWidth, nDestHeight);
+    }
+
+    if (nullptr != pAlphaBitmap && nullptr == mask)
+    {
+        SAL_WARN("vcl.gdi", "unsupported SvpSalGraphics::drawTransformedBitmap case");
+        return false;
+    }
+
+    const Size aSize = rSourceBitmap.GetSize();
+    cairo_t* cr = m_rCairoCommon.getCairoContext(false, getAntiAlias());
+    m_rCairoCommon.clipRegion(cr);
+
+    // setup the image transformation
+    // using the rNull,rX,rY points as destinations for the (0,0),(0,Width),(Height,0) source points
+    const basegfx::B2DVector aXRel = rX - rNull;
+    const basegfx::B2DVector aYRel = rY - rNull;
+    cairo_matrix_t matrix;
+    cairo_matrix_init(&matrix, aXRel.getX() / aSize.Width(), aXRel.getY() / aSize.Width(),
+                      aYRel.getX() / aSize.Height(), aYRel.getY() / aSize.Height(), rNull.getX(),
+                      rNull.getY());
+
+    cairo_transform(cr, &matrix);
+
+    cairo_rectangle(cr, 0, 0, aSize.Width(), aSize.Height());
+    basegfx::B2DRange extents = getClippedFillDamage(cr);
+    cairo_clip(cr);
+
+    cairo_set_source_surface(cr, source, 0, 0);
+    if (mask)
+        cairo_mask_surface(cr, mask, 0, 0);
+    else
+        cairo_paint(cr);
+
+    m_rCairoCommon.releaseCairoContext(cr, false, extents);
+
+    return true;
+}
+
+bool SvpGraphicsBackend::hasFastDrawTransformedBitmap() const { return false; }
+
+bool SvpGraphicsBackend::drawAlphaRect(tools::Long nX, tools::Long nY, tools::Long nWidth,
+                                       tools::Long nHeight, sal_uInt8 nTransparency)
+{
+    const bool bHasFill(m_rCairoCommon.m_aFillColor != SALCOLOR_NONE);
+    const bool bHasLine(m_rCairoCommon.m_aLineColor != SALCOLOR_NONE);
+
+    if (!(bHasFill || bHasLine))
+    {
+        return true;
+    }
+
+    cairo_t* cr = m_rCairoCommon.getCairoContext(false, getAntiAlias());
+    m_rCairoCommon.clipRegion(cr);
+
+    const double fTransparency = nTransparency * (1.0 / 100);
+
+    // To make releaseCairoContext work, use empty extents
+    basegfx::B2DRange extents;
+
+    if (bHasFill)
+    {
+        cairo_rectangle(cr, nX, nY, nWidth, nHeight);
+
+        m_rCairoCommon.applyColor(cr, m_rCairoCommon.m_aFillColor, fTransparency);
+
+        // set FillDamage
+        extents = getClippedFillDamage(cr);
+
+        cairo_fill(cr);
+    }
+
+    if (bHasLine)
+    {
+        // PixelOffset used: Set PixelOffset as linear transformation
+        // Note: Was missing here - probably not by purpose (?)
+        cairo_matrix_t aMatrix;
+        cairo_matrix_init_translate(&aMatrix, 0.5, 0.5);
+        cairo_set_matrix(cr, &aMatrix);
+
+        cairo_rectangle(cr, nX, nY, nWidth, nHeight);
+
+        m_rCairoCommon.applyColor(cr, m_rCairoCommon.m_aLineColor, fTransparency);
+
+        // expand with possible StrokeDamage
+        basegfx::B2DRange stroke_extents = getClippedStrokeDamage(cr);
+        stroke_extents.transform(basegfx::utils::createTranslateB2DHomMatrix(0.5, 0.5));
+        extents.expand(stroke_extents);
+
+        cairo_stroke(cr);
+    }
+
+    m_rCairoCommon.releaseCairoContext(cr, false, extents);
+
+    return true;
+}
+
+bool SvpGraphicsBackend::drawGradient(const tools::PolyPolygon& rPolyPolygon,
+                                      const Gradient& rGradient)
+{
+    if (rGradient.GetStyle() != GradientStyle::Linear
+        && rGradient.GetStyle() != GradientStyle::Radial)
+        return false; // unsupported
+    if (rGradient.GetSteps() != 0)
+        return false; // We can't tell cairo how many colors to use in the gradient.
+
+    cairo_t* cr = m_rCairoCommon.getCairoContext(true, getAntiAlias());
+    m_rCairoCommon.clipRegion(cr);
+
+    tools::Rectangle aInputRect(rPolyPolygon.GetBoundRect());
+    if (rPolyPolygon.IsRect())
+    {
+        // Rect->Polygon conversion loses the right and bottom edge, fix that.
+        aInputRect.AdjustRight(1);
+        aInputRect.AdjustBottom(1);
+        basegfx::B2DHomMatrix rObjectToDevice;
+        AddPolygonToPath(cr, tools::Polygon(aInputRect).getB2DPolygon(), rObjectToDevice,
+                         !getAntiAlias(), false);
+    }
+    else
+    {
+        basegfx::B2DPolyPolygon aB2DPolyPolygon(rPolyPolygon.getB2DPolyPolygon());
+        for (auto const& rPolygon : std::as_const(aB2DPolyPolygon))
+        {
+            basegfx::B2DHomMatrix rObjectToDevice;
+            AddPolygonToPath(cr, rPolygon, rObjectToDevice, !getAntiAlias(), false);
+        }
+    }
+
+    Gradient aGradient(rGradient);
+
+    tools::Rectangle aBoundRect;
+    Point aCenter;
+
+    aGradient.SetAngle(aGradient.GetAngle() + 2700_deg10);
+    aGradient.GetBoundRect(aInputRect, aBoundRect, aCenter);
+    Color aStartColor = aGradient.GetStartColor();
+    Color aEndColor = aGradient.GetEndColor();
+
+    cairo_pattern_t* pattern;
+    if (rGradient.GetStyle() == GradientStyle::Linear)
+    {
+        tools::Polygon aPoly(aBoundRect);
+        aPoly.Rotate(aCenter, aGradient.GetAngle() % 3600_deg10);
+        pattern
+            = cairo_pattern_create_linear(aPoly[0].X(), aPoly[0].Y(), aPoly[1].X(), aPoly[1].Y());
+    }
+    else
+    {
+        double radius = std::max(aBoundRect.GetWidth() / 2.0, aBoundRect.GetHeight() / 2.0);
+        // Move the center a bit to the top-left (the default VCL algorithm is a bit off-center that way,
+        // cairo is the opposite way).
+        pattern = cairo_pattern_create_radial(aCenter.X() - 0.5, aCenter.Y() - 0.5, 0,
+                                              aCenter.X() - 0.5, aCenter.Y() - 0.5, radius);
+        std::swap(aStartColor, aEndColor);
+    }
+
+    cairo_pattern_add_color_stop_rgba(
+        pattern, aGradient.GetBorder() / 100.0,
+        aStartColor.GetRed() * aGradient.GetStartIntensity() / 25500.0,
+        aStartColor.GetGreen() * aGradient.GetStartIntensity() / 25500.0,
+        aStartColor.GetBlue() * aGradient.GetStartIntensity() / 25500.0, 1.0);
+
+    cairo_pattern_add_color_stop_rgba(
+        pattern, 1.0, aEndColor.GetRed() * aGradient.GetEndIntensity() / 25500.0,
+        aEndColor.GetGreen() * aGradient.GetEndIntensity() / 25500.0,
+        aEndColor.GetBlue() * aGradient.GetEndIntensity() / 25500.0, 1.0);
+
+    cairo_set_source(cr, pattern);
+    cairo_pattern_destroy(pattern);
+
+    basegfx::B2DRange extents = getClippedFillDamage(cr);
+    cairo_fill_preserve(cr);
+
+    m_rCairoCommon.releaseCairoContext(cr, true, extents);
+
+    return true;
+}
+
+bool SvpGraphicsBackend::implDrawGradient(basegfx::B2DPolyPolygon const& rPolyPolygon,
+                                          SalGradient const& rGradient)
+{
+    cairo_t* cr = m_rCairoCommon.getCairoContext(true, getAntiAlias());
+    m_rCairoCommon.clipRegion(cr);
+
+    basegfx::B2DHomMatrix rObjectToDevice;
+
+    for (auto const& rPolygon : rPolyPolygon)
+        AddPolygonToPath(cr, rPolygon, rObjectToDevice, !getAntiAlias(), false);
+
+    cairo_pattern_t* pattern
+        = cairo_pattern_create_linear(rGradient.maPoint1.getX(), rGradient.maPoint1.getY(),
+                                      rGradient.maPoint2.getX(), rGradient.maPoint2.getY());
+
+    for (SalGradientStop const& rStop : rGradient.maStops)
+    {
+        double r = rStop.maColor.GetRed() / 255.0;
+        double g = rStop.maColor.GetGreen() / 255.0;
+        double b = rStop.maColor.GetBlue() / 255.0;
+        double a = rStop.maColor.GetAlpha() / 255.0;
+        double offset = rStop.mfOffset;
+
+        cairo_pattern_add_color_stop_rgba(pattern, offset, r, g, b, a);
+    }
+    cairo_set_source(cr, pattern);
+    cairo_pattern_destroy(pattern);
+
+    basegfx::B2DRange extents = getClippedFillDamage(cr);
+    cairo_fill_preserve(cr);
+
+    m_rCairoCommon.releaseCairoContext(cr, true, extents);
+
+    return true;
+}
+
+bool SvpGraphicsBackend::supportsOperation(OutDevSupportType eType) const
+{
+    switch (eType)
+    {
+        case OutDevSupportType::TransparentRect:
+        case OutDevSupportType::B2DDraw:
+            return true;
+    }
+    return false;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/headless/headlessinst.cxx b/vcl/headless/headlessinst.cxx
new file mode 100644
index 000000000..abe3e1cf9
--- /dev/null
+++ b/vcl/headless/headlessinst.cxx
@@ -0,0 +1,55 @@
+/* -*- 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/.
+ */
+#include <headless/svpinst.hxx>
+#include <headless/svpdummies.hxx>
+#include <headless/svpdata.hxx>
+#include <unistd.h>
+
+class HeadlessSalInstance : public SvpSalInstance
+{
+public:
+    explicit HeadlessSalInstance(std::unique_ptr<SalYieldMutex> pMutex);
+
+    virtual SalSystem* CreateSalSystem() override;
+};
+
+HeadlessSalInstance::HeadlessSalInstance(std::unique_ptr<SalYieldMutex> pMutex)
+    : SvpSalInstance(std::move(pMutex))
+{
+}
+
+class HeadlessSalSystem : public SvpSalSystem {
+public:
+    HeadlessSalSystem() : SvpSalSystem() {}
+    virtual int ShowNativeDialog( const OUString& rTitle,
+                                  const OUString& rMessage,
+                                  const std::vector< OUString >& rButtons ) override
+    {
+        (void)rButtons;
+        SAL_INFO("vcl.headless",
+                "LibreOffice - dialog '"
+                << rTitle << "': '"
+                << rMessage << "'");
+        return 0;
+    }
+};
+
+SalSystem *HeadlessSalInstance::CreateSalSystem()
+{
+    return new HeadlessSalSystem();
+}
+
+extern "C" SalInstance *create_SalInstance()
+{
+    HeadlessSalInstance* pInstance = new HeadlessSalInstance(std::make_unique<SvpSalYieldMutex>());
+    new SvpSalData();
+    return pInstance;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/headless/svpbmp.cxx b/vcl/headless/svpbmp.cxx
new file mode 100644
index 000000000..167a5165a
--- /dev/null
+++ b/vcl/headless/svpbmp.cxx
@@ -0,0 +1,271 @@
+/* -*- 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 <sal/log.hxx>
+
+#include <cstring>
+
+#include <headless/svpbmp.hxx>
+#include <headless/svpgdi.hxx>
+#include <headless/svpinst.hxx>
+
+#include <basegfx/vector/b2ivector.hxx>
+#include <basegfx/range/b2ibox.hxx>
+#include <o3tl/safeint.hxx>
+#include <tools/helpers.hxx>
+#include <vcl/bitmap.hxx>
+
+using namespace basegfx;
+
+SvpSalBitmap::SvpSalBitmap()
+{
+}
+
+SvpSalBitmap::~SvpSalBitmap()
+{
+    Destroy();
+}
+
+static std::unique_ptr<BitmapBuffer> ImplCreateDIB(
+    const Size& rSize,
+    vcl::PixelFormat ePixelFormat,
+    const BitmapPalette& rPal)
+{
+    if (!rSize.Width() || !rSize.Height())
+        return nullptr;
+
+    std::unique_ptr<BitmapBuffer> pDIB;
+
+    try
+    {
+        pDIB.reset(new BitmapBuffer);
+    }
+    catch (const std::bad_alloc&)
+    {
+        return nullptr;
+    }
+
+    switch (ePixelFormat)
+    {
+        case vcl::PixelFormat::N1_BPP:
+            pDIB->mnFormat = ScanlineFormat::N1BitLsbPal;
+            break;
+        case vcl::PixelFormat::N8_BPP:
+            pDIB->mnFormat = ScanlineFormat::N8BitPal;
+            break;
+        case vcl::PixelFormat::N24_BPP:
+            pDIB->mnFormat = SVP_24BIT_FORMAT;
+            break;
+        case vcl::PixelFormat::N32_BPP:
+            pDIB->mnFormat = SVP_CAIRO_FORMAT;
+            break;
+        case vcl::PixelFormat::INVALID:
+            assert(false);
+            pDIB->mnFormat = SVP_CAIRO_FORMAT;
+            break;
+    }
+
+    sal_uInt16 nColors = 0;
+    if (ePixelFormat <= vcl::PixelFormat::N8_BPP)
+        nColors = vcl::numberOfColors(ePixelFormat);
+
+    pDIB->mnFormat |= ScanlineFormat::TopDown;
+    pDIB->mnWidth = rSize.Width();
+    pDIB->mnHeight = rSize.Height();
+    tools::Long nScanlineBase;
+    bool bFail = o3tl::checked_multiply<tools::Long>(pDIB->mnWidth, vcl::pixelFormatBitCount(ePixelFormat), nScanlineBase);
+    if (bFail)
+    {
+        SAL_WARN("vcl.gdi", "checked multiply failed");
+        return nullptr;
+    }
+    pDIB->mnScanlineSize = AlignedWidth4Bytes(nScanlineBase);
+    if (pDIB->mnScanlineSize < nScanlineBase/8)
+    {
+        SAL_WARN("vcl.gdi", "scanline calculation wraparound");
+        return nullptr;
+    }
+    pDIB->mnBitCount = vcl::pixelFormatBitCount(ePixelFormat);
+
+    if (nColors)
+    {
+        pDIB->maPalette = rPal;
+        pDIB->maPalette.SetEntryCount( nColors );
+    }
+
+    size_t size;
+    bFail = o3tl::checked_multiply<size_t>(pDIB->mnHeight, pDIB->mnScanlineSize, size);
+    SAL_WARN_IF(bFail, "vcl.gdi", "checked multiply failed");
+    if (bFail || size > SAL_MAX_INT32/2)
+    {
+        return nullptr;
+    }
+
+    try
+    {
+        pDIB->mpBits = new sal_uInt8[size];
+#ifdef __SANITIZE_ADDRESS__
+        if (!pDIB->mpBits)
+        {   // can only happen with ASAN allocator_may_return_null=1
+            pDIB.reset();
+        }
+        else
+#endif
+        {
+            std::memset(pDIB->mpBits, 0, size);
+        }
+    }
+    catch (const std::bad_alloc&)
+    {
+        pDIB.reset();
+    }
+
+    return pDIB;
+}
+
+void SvpSalBitmap::Create(std::unique_ptr<BitmapBuffer> pBuf)
+{
+    Destroy();
+    mpDIB = std::move(pBuf);
+}
+
+bool SvpSalBitmap::Create(const Size& rSize, vcl::PixelFormat ePixelFormat, const BitmapPalette& rPal)
+{
+    Destroy();
+    mpDIB = ImplCreateDIB(rSize, ePixelFormat, rPal);
+    return mpDIB != nullptr;
+}
+
+bool SvpSalBitmap::Create(const SalBitmap& rBmp)
+{
+    Destroy();
+
+    const SvpSalBitmap& rSalBmp = static_cast<const SvpSalBitmap&>(rBmp);
+
+    if (rSalBmp.mpDIB)
+    {
+        // TODO: reference counting...
+        mpDIB.reset(new BitmapBuffer( *rSalBmp.mpDIB ));
+
+        const size_t size = mpDIB->mnScanlineSize * mpDIB->mnHeight;
+        if (size > SAL_MAX_INT32/2)
+        {
+            mpDIB.reset();
+            return false;
+        }
+
+        // TODO: get rid of this when BitmapBuffer gets copy constructor
+        try
+        {
+            mpDIB->mpBits = new sal_uInt8[size];
+            std::memcpy(mpDIB->mpBits, rSalBmp.mpDIB->mpBits, size);
+        }
+        catch (const std::bad_alloc&)
+        {
+            mpDIB.reset();
+        }
+    }
+
+    return !rSalBmp.mpDIB || (mpDIB != nullptr);
+}
+
+bool SvpSalBitmap::Create( const SalBitmap& /*rSalBmp*/,
+                           SalGraphics* /*pGraphics*/ )
+{
+    return false;
+}
+
+bool SvpSalBitmap::Create(const SalBitmap& /*rSalBmp*/,
+                          vcl::PixelFormat /*eNewPixelFormat*/)
+{
+    return false;
+}
+
+bool SvpSalBitmap::Create( const css::uno::Reference< css::rendering::XBitmapCanvas >& /*xBitmapCanvas*/, Size& /*rSize*/, bool /*bMask*/ )
+{
+    return false;
+}
+
+void SvpSalBitmap::Destroy()
+{
+    if (mpDIB)
+    {
+        delete[] mpDIB->mpBits;
+        mpDIB.reset();
+    }
+}
+
+Size SvpSalBitmap::GetSize() const
+{
+    Size aSize;
+
+    if (mpDIB)
+    {
+        aSize.setWidth( mpDIB->mnWidth );
+        aSize.setHeight( mpDIB->mnHeight );
+    }
+
+    return aSize;
+}
+
+sal_uInt16 SvpSalBitmap::GetBitCount() const
+{
+    sal_uInt16 nBitCount;
+
+    if (mpDIB)
+        nBitCount = mpDIB->mnBitCount;
+    else
+        nBitCount = 0;
+
+    return nBitCount;
+}
+
+BitmapBuffer* SvpSalBitmap::AcquireBuffer(BitmapAccessMode)
+{
+    return mpDIB.get();
+}
+
+void SvpSalBitmap::ReleaseBuffer(BitmapBuffer*, BitmapAccessMode nMode)
+{
+    if( nMode == BitmapAccessMode::Write )
+        InvalidateChecksum();
+}
+
+bool SvpSalBitmap::GetSystemData( BitmapSystemData& )
+{
+    return false;
+}
+
+bool SvpSalBitmap::ScalingSupported() const
+{
+    return false;
+}
+
+bool SvpSalBitmap::Scale( const double& /*rScaleX*/, const double& /*rScaleY*/, BmpScaleFlag /*nScaleFlag*/ )
+{
+    return false;
+}
+
+bool SvpSalBitmap::Replace( const ::Color& /*rSearchColor*/, const ::Color& /*rReplaceColor*/, sal_uInt8 /*nTol*/ )
+{
+    return false;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/headless/svpcairotextrender.cxx b/vcl/headless/svpcairotextrender.cxx
new file mode 100644
index 000000000..c64bafae0
--- /dev/null
+++ b/vcl/headless/svpcairotextrender.cxx
@@ -0,0 +1,34 @@
+/* -*- 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/.
+ */
+
+#include <headless/svpcairotextrender.hxx>
+#include <headless/svpgdi.hxx>
+#include <cairo.h>
+
+SvpCairoTextRender::SvpCairoTextRender(SvpSalGraphics& rParent)
+    : mrParent(rParent)
+{
+}
+
+cairo_t* SvpCairoTextRender::getCairoContext() { return mrParent.getCairoContext(); }
+
+void SvpCairoTextRender::getSurfaceOffset(double& nDX, double& nDY)
+{
+    nDX = 0;
+    nDY = 0;
+}
+
+void SvpCairoTextRender::clipRegion(cairo_t* cr) { mrParent.clipRegion(cr); }
+
+void SvpCairoTextRender::releaseCairoContext(cairo_t* cr)
+{
+    mrParent.releaseCairoContext(cr, basegfx::B2DRange());
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/headless/svpdummies.cxx b/vcl/headless/svpdummies.cxx
new file mode 100644
index 000000000..4d8e639b7
--- /dev/null
+++ b/vcl/headless/svpdummies.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 <rtl/ustrbuf.hxx>
+#include <headless/svpdummies.hxx>
+#include <headless/svpinst.hxx>
+
+SvpSalObject::~SvpSalObject()
+{
+}
+
+void SvpSalObject::ResetClipRegion() {}
+void SvpSalObject::BeginSetClipRegion( sal_uInt32 ) {}
+void SvpSalObject::UnionClipRegion( tools::Long, tools::Long, tools::Long, tools::Long ) {}
+void SvpSalObject::EndSetClipRegion() {}
+void SvpSalObject::SetPosSize( tools::Long, tools::Long, tools::Long, tools::Long ) {}
+void SvpSalObject::Show( bool ) {}
+const SystemEnvData* SvpSalObject::GetSystemData() const { return &m_aSystemChildData; }
+
+// SalSystem
+SvpSalSystem::~SvpSalSystem() {}
+
+unsigned int SvpSalSystem::GetDisplayScreenCount()
+{
+    return 1;
+}
+
+tools::Rectangle SvpSalSystem::GetDisplayScreenPosSizePixel( unsigned int nScreen )
+{
+    tools::Rectangle aRect;
+    if( nScreen == 0 )
+        aRect = tools::Rectangle( Point(0,0), Size(VIRTUAL_DESKTOP_WIDTH,VIRTUAL_DESKTOP_HEIGHT) );
+    return aRect;
+}
+
+int SvpSalSystem::ShowNativeDialog( const OUString&, const OUString&,
+                                    const std::vector< OUString >& )
+{
+    return 0;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/headless/svpframe.cxx b/vcl/headless/svpframe.cxx
new file mode 100644
index 000000000..c6c8a08e2
--- /dev/null
+++ b/vcl/headless/svpframe.cxx
@@ -0,0 +1,513 @@
+/* -*- 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 <comphelper/lok.hxx>
+#include <o3tl/safeint.hxx>
+#include <vcl/syswin.hxx>
+#include <sal/log.hxx>
+
+#include <headless/svpframe.hxx>
+#include <headless/svpinst.hxx>
+#ifndef IOS
+#include <headless/svpgdi.hxx>
+#endif
+
+#include <basegfx/vector/b2ivector.hxx>
+
+#ifndef IOS
+#include <cairo.h>
+#endif
+
+SvpSalFrame* SvpSalFrame::s_pFocusFrame = nullptr;
+
+#ifdef IOS
+#define SvpSalGraphics AquaSalGraphics
+#endif
+
+SvpSalFrame::SvpSalFrame( SvpSalInstance* pInstance,
+                          SalFrame* pParent,
+                          SalFrameStyleFlags nSalFrameStyle ) :
+    m_pInstance( pInstance ),
+    m_pParent( static_cast<SvpSalFrame*>(pParent) ),
+    m_nStyle( nSalFrameStyle ),
+    m_bVisible( false ),
+#ifndef IOS
+    m_pSurface( nullptr ),
+#endif
+    m_nMinWidth( 0 ),
+    m_nMinHeight( 0 ),
+    m_nMaxWidth( 0 ),
+    m_nMaxHeight( 0 )
+{
+#ifdef IOS
+    // Nothing
+#elif defined ANDROID
+    // Nothing
+#else
+    m_aSystemChildData.pSalFrame    = this;
+#endif
+
+    if( m_pParent )
+        m_pParent->m_aChildren.push_back( this );
+
+    if( m_pInstance )
+        m_pInstance->registerFrame( this );
+
+    SetPosSize( 0, 0, 800, 600, SAL_FRAME_POSSIZE_WIDTH | SAL_FRAME_POSSIZE_HEIGHT );
+}
+
+SvpSalFrame::~SvpSalFrame()
+{
+    if( m_pInstance )
+        m_pInstance->deregisterFrame( this );
+
+    std::vector<SvpSalFrame*> Children = m_aChildren;
+    for( auto& rChild : Children )
+        rChild->SetParent( m_pParent );
+    if( m_pParent )
+        m_pParent->m_aChildren.erase(std::remove(m_pParent->m_aChildren.begin(), m_pParent->m_aChildren.end(), this), m_pParent->m_aChildren.end());
+
+    if( s_pFocusFrame == this )
+    {
+        s_pFocusFrame = nullptr;
+        // call directly here, else an event for a destroyed frame would be dispatched
+        CallCallback( SalEvent::LoseFocus, nullptr );
+        // if the handler has not set a new focus frame
+        // pass focus to another frame, preferably a document style window
+        if( s_pFocusFrame == nullptr )
+        {
+            for (auto pSalFrame : m_pInstance->getFrames() )
+            {
+                SvpSalFrame* pFrame = static_cast<SvpSalFrame*>( pSalFrame );
+                if( pFrame->m_bVisible        &&
+                    pFrame->m_pParent == nullptr &&
+                    (pFrame->m_nStyle & (SalFrameStyleFlags::MOVEABLE |
+                                         SalFrameStyleFlags::SIZEABLE |
+                                         SalFrameStyleFlags::CLOSEABLE) )
+                    )
+                {
+                    pFrame->GetFocus();
+                    break;
+                }
+            }
+        }
+    }
+#ifndef IOS
+    if (m_pSurface)
+        cairo_surface_destroy(m_pSurface);
+#endif
+}
+
+void SvpSalFrame::GetFocus()
+{
+    if (m_nStyle == SalFrameStyleFlags::NONE)
+        return;
+    if( s_pFocusFrame == this )
+        return;
+    // FIXME: return if !m_bVisible
+    // That's IMHO why CppunitTest_sd_tiledrendering crashes non-headless
+
+    if( (m_nStyle & (SalFrameStyleFlags::OWNERDRAWDECORATION | SalFrameStyleFlags::FLOAT)) == SalFrameStyleFlags::NONE )
+    {
+        if( s_pFocusFrame )
+            s_pFocusFrame->LoseFocus();
+        s_pFocusFrame = this;
+        m_pInstance->PostEvent( this, nullptr, SalEvent::GetFocus );
+    }
+}
+
+void SvpSalFrame::LoseFocus()
+{
+    if( s_pFocusFrame == this )
+    {
+        m_pInstance->PostEvent( this, nullptr, SalEvent::LoseFocus );
+        s_pFocusFrame = nullptr;
+    }
+}
+
+basegfx::B2IVector SvpSalFrame::GetSurfaceFrameSize() const
+{
+    basegfx::B2IVector aFrameSize( maGeometry.nWidth, maGeometry.nHeight );
+    if( aFrameSize.getX() == 0 )
+        aFrameSize.setX( 1 );
+    if( aFrameSize.getY() == 0 )
+        aFrameSize.setY( 1 );
+    // Creating backing surfaces for invisible windows costs a big chunk of RAM.
+    if (Application::IsHeadlessModeEnabled())
+         aFrameSize = basegfx::B2IVector( 1, 1 );
+    return aFrameSize;
+}
+
+SalGraphics* SvpSalFrame::AcquireGraphics()
+{
+    SvpSalGraphics* pGraphics = new SvpSalGraphics();
+#ifndef IOS
+    pGraphics->setSurface(m_pSurface, GetSurfaceFrameSize());
+#endif
+    m_aGraphics.push_back( pGraphics );
+    return pGraphics;
+}
+
+void SvpSalFrame::ReleaseGraphics( SalGraphics* pGraphics )
+{
+    SvpSalGraphics* pSvpGraphics = dynamic_cast<SvpSalGraphics*>(pGraphics);
+    m_aGraphics.erase(std::remove(m_aGraphics.begin(), m_aGraphics.end(), pSvpGraphics), m_aGraphics.end());
+    delete pSvpGraphics;
+}
+
+bool SvpSalFrame::PostEvent(std::unique_ptr<ImplSVEvent> pData)
+{
+    m_pInstance->PostEvent( this, pData.release(), SalEvent::UserEvent );
+    return true;
+}
+
+void SvpSalFrame::PostPaint() const
+{
+    if( m_bVisible )
+    {
+        SalPaintEvent aPEvt(0, 0, maGeometry.nWidth, maGeometry.nHeight);
+        aPEvt.mbImmediateUpdate = false;
+        CallCallback( SalEvent::Paint, &aPEvt );
+    }
+}
+
+void SvpSalFrame::SetTitle(const OUString& sTitle)
+{
+    m_sTitle = sTitle;
+}
+
+void SvpSalFrame::SetIcon( sal_uInt16 )
+{
+}
+
+void SvpSalFrame::SetMenu( SalMenu* )
+{
+}
+
+void SvpSalFrame::DrawMenuBar()
+{
+}
+
+void SvpSalFrame::SetExtendedFrameStyle( SalExtStyle )
+{
+}
+
+void SvpSalFrame::Show( bool bVisible, bool bNoActivate )
+{
+    if (m_nStyle == SalFrameStyleFlags::NONE)
+        return;
+    if (bVisible == m_bVisible)
+    {
+        if (m_bVisible && !bNoActivate)
+            GetFocus();
+        return;
+    }
+
+    if (bVisible)
+    {
+        m_bVisible = true;
+        m_pInstance->PostEvent( this, nullptr, SalEvent::Resize );
+        if( ! bNoActivate )
+            GetFocus();
+    }
+    else
+    {
+        m_bVisible = false;
+        LoseFocus();
+    }
+}
+
+void SvpSalFrame::SetMinClientSize( tools::Long nWidth, tools::Long nHeight )
+{
+    m_nMinWidth = nWidth;
+    m_nMinHeight = nHeight;
+}
+
+void SvpSalFrame::SetMaxClientSize( tools::Long nWidth, tools::Long nHeight )
+{
+    m_nMaxWidth = nWidth;
+    m_nMaxHeight = nHeight;
+}
+
+void SvpSalFrame::SetPosSize( tools::Long nX, tools::Long nY, tools::Long nWidth, tools::Long nHeight, sal_uInt16 nFlags )
+{
+    if( (nFlags & SAL_FRAME_POSSIZE_X) != 0 )
+        maGeometry.nX = nX;
+    if( (nFlags & SAL_FRAME_POSSIZE_Y) != 0 )
+        maGeometry.nY = nY;
+    if( (nFlags & SAL_FRAME_POSSIZE_WIDTH) != 0 )
+    {
+        maGeometry.nWidth = nWidth;
+        if( m_nMaxWidth > 0 && maGeometry.nWidth > o3tl::make_unsigned(m_nMaxWidth) )
+            maGeometry.nWidth = m_nMaxWidth;
+        if( m_nMinWidth > 0 && maGeometry.nWidth < o3tl::make_unsigned(m_nMinWidth) )
+            maGeometry.nWidth = m_nMinWidth;
+    }
+    if( (nFlags & SAL_FRAME_POSSIZE_HEIGHT) != 0 )
+    {
+        maGeometry.nHeight = nHeight;
+        if( m_nMaxHeight > 0 && maGeometry.nHeight > o3tl::make_unsigned(m_nMaxHeight) )
+            maGeometry.nHeight = m_nMaxHeight;
+        if( m_nMinHeight > 0 && maGeometry.nHeight < o3tl::make_unsigned(m_nMinHeight) )
+            maGeometry.nHeight = m_nMinHeight;
+    }
+#ifndef IOS
+    basegfx::B2IVector aFrameSize = GetSurfaceFrameSize();
+    if (!m_pSurface || cairo_image_surface_get_width(m_pSurface) != aFrameSize.getX() ||
+                       cairo_image_surface_get_height(m_pSurface) != aFrameSize.getY() )
+    {
+        if (m_pSurface)
+            cairo_surface_destroy(m_pSurface);
+
+        m_pSurface = cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
+                                                aFrameSize.getX(),
+                                                aFrameSize.getY());
+
+        // update device in existing graphics
+        for (auto const& graphic : m_aGraphics)
+        {
+             graphic->setSurface(m_pSurface, aFrameSize);
+        }
+    }
+    if( m_bVisible )
+        m_pInstance->PostEvent( this, nullptr, SalEvent::Resize );
+#endif
+}
+
+void SvpSalFrame::GetClientSize( tools::Long& rWidth, tools::Long& rHeight )
+{
+    rWidth = maGeometry.nWidth;
+    rHeight = maGeometry.nHeight;
+}
+
+void SvpSalFrame::GetWorkArea( tools::Rectangle& rRect )
+{
+    rRect = tools::Rectangle( Point( 0, 0 ),
+                       Size( VIRTUAL_DESKTOP_WIDTH, VIRTUAL_DESKTOP_HEIGHT ) );
+}
+
+SalFrame* SvpSalFrame::GetParent() const
+{
+    return m_pParent;
+}
+
+constexpr auto FRAMESTATE_MASK_GEOMETRY =
+     WindowStateMask::X     | WindowStateMask::Y |
+     WindowStateMask::Width | WindowStateMask::Height;
+
+void SvpSalFrame::SetWindowState( const SalFrameState *pState )
+{
+    if (pState == nullptr)
+        return;
+
+    // Request for position or size change
+    if (!(pState->mnMask & FRAMESTATE_MASK_GEOMETRY))
+        return;
+
+    tools::Long nX = maGeometry.nX;
+    tools::Long nY = maGeometry.nY;
+    tools::Long nWidth = maGeometry.nWidth;
+    tools::Long nHeight = maGeometry.nHeight;
+
+    // change requested properties
+    if (pState->mnMask & WindowStateMask::X)
+        nX = pState->mnX;
+    if (pState->mnMask & WindowStateMask::Y)
+        nY = pState->mnY;
+    if (pState->mnMask & WindowStateMask::Width)
+        nWidth = pState->mnWidth;
+    if (pState->mnMask & WindowStateMask::Height)
+        nHeight = pState->mnHeight;
+
+    SetPosSize( nX, nY, nWidth, nHeight,
+                SAL_FRAME_POSSIZE_X | SAL_FRAME_POSSIZE_Y |
+                SAL_FRAME_POSSIZE_WIDTH | SAL_FRAME_POSSIZE_HEIGHT );
+}
+
+bool SvpSalFrame::GetWindowState( SalFrameState* pState )
+{
+    pState->mnState = WindowStateState::Normal;
+    pState->mnX      = maGeometry.nX;
+    pState->mnY      = maGeometry.nY;
+    pState->mnWidth  = maGeometry.nWidth;
+    pState->mnHeight = maGeometry.nHeight;
+    pState->mnMask   = FRAMESTATE_MASK_GEOMETRY | WindowStateMask::State;
+
+    return true;
+}
+
+void SvpSalFrame::ShowFullScreen( bool, sal_Int32 )
+{
+    SetPosSize( 0, 0, VIRTUAL_DESKTOP_WIDTH, VIRTUAL_DESKTOP_HEIGHT,
+                SAL_FRAME_POSSIZE_WIDTH | SAL_FRAME_POSSIZE_HEIGHT );
+}
+
+void SvpSalFrame::StartPresentation( bool )
+{
+}
+
+void SvpSalFrame::SetAlwaysOnTop( bool )
+{
+}
+
+void SvpSalFrame::ToTop(SalFrameToTop nFlags)
+{
+    if (m_nStyle == SalFrameStyleFlags::NONE)
+        return;
+    if (nFlags & SalFrameToTop::RestoreWhenMin)
+        Show(true, false);
+    else
+        GetFocus();
+}
+
+void SvpSalFrame::SetPointer( PointerStyle )
+{
+}
+
+void SvpSalFrame::CaptureMouse( bool )
+{
+}
+
+void SvpSalFrame::SetPointerPos( tools::Long, tools::Long )
+{
+}
+
+void SvpSalFrame::Flush()
+{
+}
+
+void SvpSalFrame::SetInputContext( SalInputContext* )
+{
+}
+
+void SvpSalFrame::EndExtTextInput( EndExtTextInputFlags )
+{
+}
+
+OUString SvpSalFrame::GetKeyName( sal_uInt16 )
+{
+    return OUString();
+}
+
+bool SvpSalFrame::MapUnicodeToKeyCode( sal_Unicode, LanguageType, vcl::KeyCode& )
+{
+    return false;
+}
+
+LanguageType SvpSalFrame::GetInputLanguage()
+{
+    return LANGUAGE_DONTKNOW;
+}
+
+void SvpSalFrame::UpdateSettings( AllSettings& rSettings )
+{
+    StyleSettings aStyleSettings = rSettings.GetStyleSettings();
+
+    Color aBackgroundColor( 0xef, 0xef, 0xef );
+    aStyleSettings.BatchSetBackgrounds( aBackgroundColor, false );
+    aStyleSettings.SetMenuColor( aBackgroundColor );
+    aStyleSettings.SetMenuBarColor( aBackgroundColor );
+
+    if (comphelper::LibreOfficeKit::isActive()) // TODO: remove this.
+    {
+        vcl::Font aStdFont( FAMILY_SWISS, Size( 0, 14 ) );
+        aStdFont.SetCharSet( osl_getThreadTextEncoding() );
+        aStdFont.SetWeight( WEIGHT_NORMAL );
+        aStdFont.SetFamilyName( "Liberation Sans" );
+        aStyleSettings.BatchSetFonts( aStdFont, aStdFont );
+
+        aStdFont.SetFontSize(Size(0, 12));
+        aStyleSettings.SetMenuFont(aStdFont);
+
+        SvpSalGraphics* pGraphics = m_aGraphics.back();
+        bool bFreeGraphics = false;
+        if (!pGraphics)
+        {
+            pGraphics = dynamic_cast<SvpSalGraphics*>(AcquireGraphics());
+            if (!pGraphics)
+            {
+                SAL_WARN("vcl.gtk3", "Could not get graphics - unable to update settings");
+                return;
+            }
+            bFreeGraphics = true;
+        }
+        rSettings.SetStyleSettings(aStyleSettings);
+#ifndef IOS // For now...
+        pGraphics->UpdateSettings(rSettings);
+#endif
+        if (bFreeGraphics)
+            ReleaseGraphics(pGraphics);
+    }
+    else
+        rSettings.SetStyleSettings(aStyleSettings);
+}
+
+void SvpSalFrame::Beep()
+{
+}
+
+const SystemEnvData* SvpSalFrame::GetSystemData() const
+{
+    return &m_aSystemChildData;
+}
+
+SalFrame::SalPointerState SvpSalFrame::GetPointerState()
+{
+    SalPointerState aState;
+    aState.mnState = 0;
+    return aState;
+}
+
+KeyIndicatorState SvpSalFrame::GetIndicatorState()
+{
+    return KeyIndicatorState::NONE;
+}
+
+void SvpSalFrame::SimulateKeyPress( sal_uInt16 /*nKeyCode*/ )
+{
+}
+
+void SvpSalFrame::SetParent( SalFrame* pNewParent )
+{
+    if( m_pParent )
+        m_pParent->m_aChildren.erase(std::remove(m_pParent->m_aChildren.begin(), m_pParent->m_aChildren.end(), this), m_pParent->m_aChildren.end());
+    m_pParent = static_cast<SvpSalFrame*>(pNewParent);
+}
+
+void SvpSalFrame::SetPluginParent( SystemParentData* )
+{
+}
+
+void SvpSalFrame::ResetClipRegion()
+{
+}
+
+void SvpSalFrame::BeginSetClipRegion( sal_uInt32 )
+{
+}
+
+void SvpSalFrame::UnionClipRegion( tools::Long, tools::Long, tools::Long, tools::Long )
+{
+}
+
+void SvpSalFrame::EndSetClipRegion()
+{
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/headless/svpgdi.cxx b/vcl/headless/svpgdi.cxx
new file mode 100644
index 000000000..322dab644
--- /dev/null
+++ b/vcl/headless/svpgdi.cxx
@@ -0,0 +1,96 @@
+/* -*- 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 <config_features.h>
+
+#include <memory>
+#include <numeric>
+
+#include <headless/svpgdi.hxx>
+#include <comphelper/lok.hxx>
+
+SvpSalGraphics::SvpSalGraphics()
+    : m_aTextRenderImpl(*this)
+    , m_pBackend(new SvpGraphicsBackend(m_aCairoCommon))
+{
+    bool bLOKActive = comphelper::LibreOfficeKit::isActive();
+    initWidgetDrawBackends(bLOKActive);
+}
+
+SvpSalGraphics::~SvpSalGraphics()
+{
+    ReleaseFonts();
+}
+
+void SvpSalGraphics::setSurface(cairo_surface_t* pSurface, const basegfx::B2IVector& rSize)
+{
+    m_aCairoCommon.m_pSurface = pSurface;
+    m_aCairoCommon.m_aFrameSize = rSize;
+    dl_cairo_surface_get_device_scale(pSurface, &m_aCairoCommon.m_fScale, nullptr);
+    GetImpl()->ResetClipRegion();
+}
+
+void SvpSalGraphics::GetResolution( sal_Int32& rDPIX, sal_Int32& rDPIY )
+{
+    rDPIX = rDPIY = 96;
+}
+
+bool SvpSalGraphics::ShouldDownscaleIconsAtSurface(double* pScaleOut) const
+{
+    if (comphelper::LibreOfficeKit::isActive())
+        return SalGraphics::ShouldDownscaleIconsAtSurface(pScaleOut);
+    if (pScaleOut)
+        *pScaleOut = m_aCairoCommon.m_fScale;
+    return true;
+}
+
+#if ENABLE_CAIRO_CANVAS
+bool SvpSalGraphics::SupportsCairo() const
+{
+    return false;
+}
+
+cairo::SurfaceSharedPtr SvpSalGraphics::CreateSurface(const cairo::CairoSurfaceSharedPtr& /*rSurface*/) const
+{
+    return cairo::SurfaceSharedPtr();
+}
+
+cairo::SurfaceSharedPtr SvpSalGraphics::CreateSurface(const OutputDevice& /*rRefDevice*/, int /*x*/, int /*y*/, int /*width*/, int /*height*/) const
+{
+    return cairo::SurfaceSharedPtr();
+}
+
+cairo::SurfaceSharedPtr SvpSalGraphics::CreateBitmapSurface(const OutputDevice& /*rRefDevice*/, const BitmapSystemData& /*rData*/, const Size& /*rSize*/) const
+{
+    return cairo::SurfaceSharedPtr();
+}
+
+css::uno::Any SvpSalGraphics::GetNativeSurfaceHandle(cairo::SurfaceSharedPtr& /*rSurface*/, const basegfx::B2ISize& /*rSize*/) const
+{
+    return css::uno::Any();
+}
+
+#endif // ENABLE_CAIRO_CANVAS
+
+SystemGraphicsData SvpSalGraphics::GetGraphicsData() const
+{
+    return SystemGraphicsData();
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/headless/svpinst.cxx b/vcl/headless/svpinst.cxx
new file mode 100644
index 000000000..bf53dc24f
--- /dev/null
+++ b/vcl/headless/svpinst.cxx
@@ -0,0 +1,602 @@
+/* -*- 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 <config_features.h>
+#include <sal/config.h>
+
+#include <mutex>
+
+#include <unistd.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <pthread.h>
+#include <sys/time.h>
+#include <poll.h>
+
+#include <sal/types.h>
+#include <sal/log.hxx>
+
+#include <vcl/virdev.hxx>
+#include <vcl/inputtypes.hxx>
+#include <vcl/lok.hxx>
+
+#include <headless/svpinst.hxx>
+#include <headless/svpframe.hxx>
+#include <headless/svpdummies.hxx>
+#include <headless/svpvd.hxx>
+#ifdef IOS
+#  include <quartz/salbmp.h>
+#  include <quartz/salgdi.h>
+#  include <quartz/salvd.h>
+#else
+#  include <cairo.h>
+#  include <headless/svpgdi.hxx>
+#endif
+#include <headless/svpbmp.hxx>
+
+#include <salframe.hxx>
+#include <svdata.hxx>
+// FIXME: remove when we re-work the svp mainloop
+#include <unx/salunxtime.h>
+#include <comphelper/lok.hxx>
+#include <tools/debug.hxx>
+
+SvpSalInstance* SvpSalInstance::s_pDefaultInstance = nullptr;
+
+#ifndef NDEBUG
+static bool g_CheckedMutex = false;
+
+#define DBG_TESTSVPYIELDMUTEX() \
+do { \
+    if (!g_CheckedMutex) \
+    { \
+        assert(dynamic_cast<SvpSalYieldMutex*>(GetYieldMutex()) != nullptr \
+            && "This SvpSalInstance function requires use of SvpSalYieldMutex"); \
+        g_CheckedMutex = true; \
+    } \
+} while(false)
+
+#else // NDEBUG
+#define DBG_TESTSVPYIELDMUTEX() ((void)0)
+#endif
+
+#if !defined(ANDROID) && !defined(IOS)
+
+static void atfork_child()
+{
+    if (SvpSalInstance::s_pDefaultInstance != nullptr)
+    {
+        SvpSalInstance::s_pDefaultInstance->CloseWakeupPipe(false);
+        SvpSalInstance::s_pDefaultInstance->CreateWakeupPipe(false);
+    }
+}
+
+#endif
+
+SvpSalInstance::SvpSalInstance( std::unique_ptr<SalYieldMutex> pMutex )
+    : SalGenericInstance( std::move(pMutex) )
+{
+    m_aTimeout.tv_sec       = 0;
+    m_aTimeout.tv_usec      = 0;
+    m_nTimeoutMS            = 0;
+
+    m_MainThread = osl::Thread::getCurrentIdentifier();
+    CreateWakeupPipe(true);
+    if( s_pDefaultInstance == nullptr )
+        s_pDefaultInstance = this;
+#if !defined(ANDROID) && !defined(IOS)
+    pthread_atfork(nullptr, nullptr, atfork_child);
+#endif
+}
+
+SvpSalInstance::~SvpSalInstance()
+{
+    if( s_pDefaultInstance == this )
+        s_pDefaultInstance = nullptr;
+    CloseWakeupPipe(true);
+}
+
+void SvpSalInstance::CloseWakeupPipe(bool log)
+{
+    SvpSalYieldMutex *const pMutex(dynamic_cast<SvpSalYieldMutex*>(GetYieldMutex()));
+    if (!pMutex)
+        return;
+    if (pMutex->m_FeedbackFDs[0] != -1)
+    {
+        if (log)
+        {
+            SAL_INFO("vcl.headless", "CloseWakeupPipe: Closing inherited feedback pipe: [" << pMutex->m_FeedbackFDs[0] << "," << pMutex->m_FeedbackFDs[1] << "]");
+        }
+        close (pMutex->m_FeedbackFDs[0]);
+        close (pMutex->m_FeedbackFDs[1]);
+        pMutex->m_FeedbackFDs[0] = pMutex->m_FeedbackFDs[1] = -1;
+    }
+}
+
+void SvpSalInstance::CreateWakeupPipe(bool log)
+{
+    SvpSalYieldMutex *const pMutex(dynamic_cast<SvpSalYieldMutex*>(GetYieldMutex()));
+    if (!pMutex)
+        return;
+    if (pipe (pMutex->m_FeedbackFDs) == -1)
+    {
+        if (log)
+        {
+            SAL_WARN("vcl.headless", "Could not create feedback pipe: " << strerror(errno));
+            std::abort();
+        }
+    }
+    else
+    {
+        if (log)
+        {
+            SAL_INFO("vcl.headless", "CreateWakeupPipe: Created feedback pipe: [" << pMutex->m_FeedbackFDs[0] << "," << pMutex->m_FeedbackFDs[1] << "]");
+        }
+
+        int flags;
+
+        // set close-on-exec descriptor flag.
+        if ((flags = fcntl (pMutex->m_FeedbackFDs[0], F_GETFD)) != -1)
+        {
+            flags |= FD_CLOEXEC;
+            (void) fcntl(pMutex->m_FeedbackFDs[0], F_SETFD, flags);
+        }
+        if ((flags = fcntl (pMutex->m_FeedbackFDs[1], F_GETFD)) != -1)
+        {
+            flags |= FD_CLOEXEC;
+            (void) fcntl(pMutex->m_FeedbackFDs[1], F_SETFD, flags);
+        }
+
+        // retain the default blocking I/O for feedback pipe
+    }
+}
+
+void SvpSalInstance::TriggerUserEventProcessing()
+{
+    Wakeup();
+}
+
+void SvpSalInstance::Wakeup(SvpRequest const request)
+{
+    DBG_TESTSVPYIELDMUTEX();
+
+    ImplSVData* pSVData = ImplGetSVData();
+    if (pSVData->mpWakeCallback && pSVData->mpPollClosure)
+        pSVData->mpWakeCallback(pSVData->mpPollClosure);
+
+    SvpSalYieldMutex *const pMutex(static_cast<SvpSalYieldMutex*>(GetYieldMutex()));
+    std::scoped_lock<std::mutex> g(pMutex->m_WakeUpMainMutex);
+    if (request != SvpRequest::NONE)
+        pMutex->m_Request = request;
+    pMutex->m_wakeUpMain = true;
+    pMutex->m_WakeUpMainCond.notify_one();
+}
+
+bool SvpSalInstance::CheckTimeout( bool bExecuteTimers )
+{
+    bool bRet = false;
+    if( m_aTimeout.tv_sec ) // timer is started
+    {
+        timeval aTimeOfDay;
+        gettimeofday( &aTimeOfDay, nullptr );
+        if( aTimeOfDay >= m_aTimeout )
+        {
+            bRet = true;
+            if( bExecuteTimers )
+            {
+                // timed out, update timeout
+                m_aTimeout = aTimeOfDay;
+                m_aTimeout += m_nTimeoutMS;
+
+                osl::Guard< comphelper::SolarMutex > aGuard( GetYieldMutex() );
+
+                // notify
+                ImplSVData* pSVData = ImplGetSVData();
+                if( pSVData->maSchedCtx.mpSalTimer )
+                    pSVData->maSchedCtx.mpSalTimer->CallCallback();
+            }
+        }
+    }
+    return bRet;
+}
+
+SalFrame* SvpSalInstance::CreateChildFrame( SystemParentData* /*pParent*/, SalFrameStyleFlags nStyle )
+{
+    return new SvpSalFrame( this, nullptr, nStyle );
+}
+
+SalFrame* SvpSalInstance::CreateFrame( SalFrame* pParent, SalFrameStyleFlags nStyle )
+{
+    return new SvpSalFrame( this, pParent, nStyle );
+}
+
+void SvpSalInstance::DestroyFrame( SalFrame* pFrame )
+{
+    delete pFrame;
+}
+
+SalObject* SvpSalInstance::CreateObject( SalFrame*, SystemWindowData*, bool )
+{
+    return new SvpSalObject;
+}
+
+void SvpSalInstance::DestroyObject( SalObject* pObject )
+{
+    delete pObject;
+}
+
+#ifndef IOS
+
+std::unique_ptr<SalVirtualDevice> SvpSalInstance::CreateVirtualDevice(SalGraphics& rGraphics,
+                                                       tools::Long &nDX, tools::Long &nDY,
+                                                       DeviceFormat /*eFormat*/,
+                                                       const SystemGraphicsData* pGd)
+{
+    SvpSalGraphics *pSvpSalGraphics = dynamic_cast<SvpSalGraphics*>(&rGraphics);
+    assert(pSvpSalGraphics);
+#ifndef ANDROID
+    // tdf#127529 normally pPreExistingTarget is null and we are a true virtualdevice drawing to a backing buffer.
+    // Occasionally, for canvas/slideshow, pPreExistingTarget is pre-provided as a hack to use the vcl drawing
+    // apis to render onto a preexisting cairo surface. The necessity for that precedes the use of cairo in vcl proper
+    cairo_surface_t* pPreExistingTarget = pGd ? static_cast<cairo_surface_t*>(pGd->pSurface) : nullptr;
+#else
+    //ANDROID case
+    (void)pGd;
+    cairo_surface_t* pPreExistingTarget = nullptr;
+#endif
+    std::unique_ptr<SalVirtualDevice> pNew(new SvpSalVirtualDevice(pSvpSalGraphics->getSurface(), pPreExistingTarget));
+    pNew->SetSize( nDX, nDY );
+    return pNew;
+}
+
+cairo_surface_t* get_underlying_cairo_surface(const VirtualDevice& rDevice)
+{
+    return static_cast<SvpSalVirtualDevice*>(rDevice.mpVirDev.get())->GetSurface();
+}
+
+const cairo_font_options_t* SvpSalInstance::GetCairoFontOptions()
+{
+    static cairo_font_options_t *gOptions = nullptr;
+    if (!gOptions)
+    {
+        gOptions = cairo_font_options_create();
+        cairo_font_options_set_antialias(gOptions, CAIRO_ANTIALIAS_GRAY);
+    }
+    return gOptions;
+}
+
+#else // IOS
+
+const cairo_font_options_t* SvpSalInstance::GetCairoFontOptions()
+{
+    return nullptr;
+}
+
+#endif
+
+SalTimer* SvpSalInstance::CreateSalTimer()
+{
+    return new SvpSalTimer( this );
+}
+
+SalSystem* SvpSalInstance::CreateSalSystem()
+{
+    return new SvpSalSystem();
+}
+
+std::shared_ptr<SalBitmap> SvpSalInstance::CreateSalBitmap()
+{
+#ifdef IOS
+    return std::make_shared<QuartzSalBitmap>();
+#else
+    return std::make_shared<SvpSalBitmap>();
+#endif
+}
+
+void SvpSalInstance::ProcessEvent( SalUserEvent aEvent )
+{
+    DBG_TESTSVPYIELDMUTEX();
+
+    aEvent.m_pFrame->CallCallback( aEvent.m_nEvent, aEvent.m_pData );
+    if( aEvent.m_nEvent == SalEvent::Resize )
+    {
+        // this would be a good time to post a paint
+        const SvpSalFrame* pSvpFrame = static_cast<const SvpSalFrame*>( aEvent.m_pFrame);
+        pSvpFrame->PostPaint();
+    }
+
+    SvpSalYieldMutex *const pMutex(static_cast<SvpSalYieldMutex*>(GetYieldMutex()));
+    pMutex->m_NonMainWaitingYieldCond.set();
+}
+
+SvpSalYieldMutex::SvpSalYieldMutex()
+{
+#ifndef IOS
+    m_FeedbackFDs[0] = m_FeedbackFDs[1] = -1;
+#endif
+}
+
+SvpSalYieldMutex::~SvpSalYieldMutex()
+{
+}
+
+void SvpSalYieldMutex::doAcquire(sal_uInt32 const nLockCount)
+{
+    auto *const pInst = static_cast<SvpSalInstance*>(GetSalInstance());
+    if (pInst && pInst->IsMainThread())
+    {
+        if (m_bNoYieldLock)
+            return;
+
+        do
+        {
+            SvpRequest request = SvpRequest::NONE;
+            {
+                std::unique_lock<std::mutex> g(m_WakeUpMainMutex);
+                if (m_aMutex.tryToAcquire()) {
+                    // if there's a request, the other thread holds m_aMutex
+                    assert(m_Request == SvpRequest::NONE);
+                    m_wakeUpMain = false;
+                    break;
+                }
+                m_WakeUpMainCond.wait(g, [this]() { return m_wakeUpMain; });
+                m_wakeUpMain = false;
+                std::swap(m_Request, request);
+            }
+            if (request != SvpRequest::NONE)
+            {
+                // nested Yield on behalf of another thread
+                assert(!m_bNoYieldLock);
+                m_bNoYieldLock = true;
+                bool const bEvents = pInst->DoYield(false, request == SvpRequest::MainThreadDispatchAllEvents);
+                m_bNoYieldLock = false;
+                if (write(m_FeedbackFDs[1], &bEvents, sizeof(bool)) != sizeof(bool))
+                {
+                    SAL_WARN("vcl.headless", "Could not write: " << strerror(errno));
+                    std::abort();
+                }
+            }
+        }
+        while (true);
+    }
+    else
+    {
+        m_aMutex.acquire();
+    }
+    ++m_nCount;
+    SalYieldMutex::doAcquire(nLockCount - 1);
+}
+
+sal_uInt32 SvpSalYieldMutex::doRelease(bool const bUnlockAll)
+{
+    auto *const pInst = static_cast<SvpSalInstance*>(GetSalInstance());
+    if (pInst && pInst->IsMainThread())
+    {
+        if (m_bNoYieldLock)
+            return 1;
+        else
+            return SalYieldMutex::doRelease(bUnlockAll);
+    }
+    sal_uInt32 nCount;
+    {
+        // read m_nCount before doRelease
+        bool const isReleased(bUnlockAll || m_nCount == 1);
+        nCount = comphelper::SolarMutex::doRelease( bUnlockAll );
+
+        if (isReleased)
+        {
+            if (vcl::lok::isUnipoll())
+            {
+                if (pInst)
+                    pInst->Wakeup();
+            }
+            else
+            {
+                std::scoped_lock<std::mutex> g(m_WakeUpMainMutex);
+                m_wakeUpMain = true;
+                m_WakeUpMainCond.notify_one();
+            }
+        }
+    }
+    return nCount;
+}
+
+bool SvpSalYieldMutex::IsCurrentThread() const
+{
+    if (GetSalInstance()->IsMainThread() && m_bNoYieldLock)
+        return true;
+    else
+        return SalYieldMutex::IsCurrentThread();
+}
+
+bool SvpSalInstance::IsMainThread() const
+{
+    return osl::Thread::getCurrentIdentifier() == m_MainThread;
+}
+
+void SvpSalInstance::updateMainThread()
+{
+    if (!IsMainThread())
+    {
+        m_MainThread = osl::Thread::getCurrentIdentifier();
+        ImplGetSVData()->mnMainThreadId = osl::Thread::getCurrentIdentifier();
+    }
+}
+
+bool SvpSalInstance::ImplYield(bool bWait, bool bHandleAllCurrentEvents)
+{
+    DBG_TESTSVPYIELDMUTEX();
+    DBG_TESTSOLARMUTEX();
+    assert(IsMainThread());
+
+    bool bWasEvent = DispatchUserEvents(bHandleAllCurrentEvents);
+    if (!bHandleAllCurrentEvents && bWasEvent)
+        return true;
+
+    bWasEvent = CheckTimeout() || bWasEvent;
+    const bool bMustSleep = bWait && !bWasEvent;
+
+    // This is wrong and must be removed!
+    // We always want to drop the SolarMutex on yield; that is the whole point of yield.
+    if (!bMustSleep)
+        return bWasEvent;
+
+    sal_Int64 nTimeoutMicroS = 0;
+    if (bMustSleep)
+    {
+        if (m_aTimeout.tv_sec) // Timer is started.
+        {
+            timeval Timeout;
+            // determine remaining timeout.
+            gettimeofday (&Timeout, nullptr);
+            if (m_aTimeout > Timeout)
+                nTimeoutMicroS = ((m_aTimeout.tv_sec - Timeout.tv_sec) * 1000 * 1000 +
+                                  (m_aTimeout.tv_usec - Timeout.tv_usec));
+        }
+        else
+            nTimeoutMicroS = -1; // wait until something happens
+    }
+
+    SolarMutexReleaser aReleaser;
+
+    if (vcl::lok::isUnipoll())
+    {
+        ImplSVData* pSVData = ImplGetSVData();
+        if (pSVData->mpPollClosure)
+        {
+            int nPollResult = pSVData->mpPollCallback(pSVData->mpPollClosure, nTimeoutMicroS);
+            if (nPollResult < 0)
+                pSVData->maAppData.mbAppQuit = true;
+            bWasEvent = bWasEvent || (nPollResult != 0);
+        }
+    }
+    else if (bMustSleep)
+    {
+        SvpSalYieldMutex *const pMutex(static_cast<SvpSalYieldMutex*>(GetYieldMutex()));
+        std::unique_lock<std::mutex> g(pMutex->m_WakeUpMainMutex);
+        // wait for doRelease() or Wakeup() to set the condition
+        if (nTimeoutMicroS == -1)
+        {
+            pMutex->m_WakeUpMainCond.wait(g,
+                    [pMutex]() { return pMutex->m_wakeUpMain; });
+        }
+        else
+        {
+            int nTimeoutMS = nTimeoutMicroS / 1000;
+            if (nTimeoutMicroS % 1000)
+                nTimeoutMS += 1;
+            pMutex->m_WakeUpMainCond.wait_for(g,
+                    std::chrono::milliseconds(nTimeoutMS),
+                    [pMutex]() { return pMutex->m_wakeUpMain; });
+        }
+        // here no need to check m_Request because Acquire will do it
+    }
+
+    return bWasEvent;
+}
+
+bool SvpSalInstance::DoYield(bool bWait, bool bHandleAllCurrentEvents)
+{
+    DBG_TESTSVPYIELDMUTEX();
+    DBG_TESTSOLARMUTEX();
+
+    bool bWasEvent(false);
+    SvpSalYieldMutex *const pMutex(static_cast<SvpSalYieldMutex*>(GetYieldMutex()));
+
+    if (IsMainThread())
+    {
+        bWasEvent = ImplYield(bWait, bHandleAllCurrentEvents);
+        if (bWasEvent)
+            pMutex->m_NonMainWaitingYieldCond.set(); // wake up other threads
+    }
+    else
+    {
+        // TODO: use a SolarMutexReleaser here and drop the m_bNoYieldLock usage
+        Wakeup(bHandleAllCurrentEvents
+                ? SvpRequest::MainThreadDispatchAllEvents
+                : SvpRequest::MainThreadDispatchOneEvent);
+
+        // blocking read (for synchronisation)
+        auto const nRet = read(pMutex->m_FeedbackFDs[0], &bWasEvent, sizeof(bool));
+        assert(nRet == 1); (void) nRet;
+        if (!bWasEvent && bWait)
+        {
+            // block & release YieldMutex until the main thread does something
+            pMutex->m_NonMainWaitingYieldCond.reset();
+            SolarMutexReleaser aReleaser;
+            pMutex->m_NonMainWaitingYieldCond.wait();
+        }
+    }
+
+    return bWasEvent;
+}
+
+bool SvpSalInstance::AnyInput( VclInputFlags nType )
+{
+    if( nType & VclInputFlags::TIMER )
+        return CheckTimeout( false );
+    return false;
+}
+
+OUString SvpSalInstance::GetConnectionIdentifier()
+{
+    return OUString();
+}
+
+void SvpSalInstance::StopTimer()
+{
+    m_aTimeout.tv_sec   = 0;
+    m_aTimeout.tv_usec  = 0;
+    m_nTimeoutMS        = 0;
+}
+
+void SvpSalInstance::StartTimer( sal_uInt64 nMS )
+{
+    timeval aPrevTimeout (m_aTimeout);
+    gettimeofday (&m_aTimeout, nullptr);
+
+    m_nTimeoutMS  = nMS;
+    m_aTimeout    += m_nTimeoutMS;
+
+    if ((aPrevTimeout > m_aTimeout) || (aPrevTimeout.tv_sec == 0))
+    {
+        // Wakeup from previous timeout (or stopped timer).
+        Wakeup();
+    }
+}
+
+void SvpSalInstance::AddToRecentDocumentList(const OUString&, const OUString&, const OUString&)
+{
+}
+
+SvpSalTimer::~SvpSalTimer()
+{
+}
+
+void SvpSalTimer::Stop()
+{
+    m_pInstance->StopTimer();
+}
+
+void SvpSalTimer::Start( sal_uInt64 nMS )
+{
+    m_pInstance->StartTimer( nMS );
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/headless/svpprn.cxx b/vcl/headless/svpprn.cxx
new file mode 100644
index 000000000..a6b448af6
--- /dev/null
+++ b/vcl/headless/svpprn.cxx
@@ -0,0 +1,277 @@
+/* -*- 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 <string_view>
+
+#include <vcl/svapp.hxx>
+#include <vcl/timer.hxx>
+#include <vcl/QueueInfo.hxx>
+#include <printerinfomanager.hxx>
+
+#include <jobset.h>
+#include <print.h>
+#include <salptype.hxx>
+#include <svdata.hxx>
+
+#include <unx/genpspgraphics.h>
+
+#include <headless/svpprn.hxx>
+#include <headless/svpinst.hxx>
+
+using namespace psp;
+
+/*
+ *  static helpers
+ */
+
+static OUString getPdfDir( const PrinterInfo& rInfo )
+{
+    OUString aDir;
+    sal_Int32 nIndex = 0;
+    while( nIndex != -1 )
+    {
+        OUString aToken( rInfo.m_aFeatures.getToken( 0, ',', nIndex ) );
+        if( aToken.startsWith( "pdf=" ) )
+        {
+            sal_Int32 nPos = 0;
+            aDir = aToken.getToken( 1, '=', nPos );
+            if( aDir.isEmpty() )
+                if (auto const env = getenv( "HOME" )) {
+                    aDir = OStringToOUString(
+                        std::string_view( env ), osl_getThreadTextEncoding() );
+                }
+            break;
+        }
+    }
+    return aDir;
+}
+
+static int PtTo10Mu( int nPoints ) { return static_cast<int>((static_cast<double>(nPoints)*35.27777778)+0.5); }
+
+static void copyJobDataToJobSetup( ImplJobSetup* pJobSetup, JobData& rData )
+{
+    pJobSetup->SetOrientation( rData.m_eOrientation == orientation::Landscape ? Orientation::Landscape : Orientation::Portrait );
+
+    // copy page size
+    OUString aPaper;
+    int width, height;
+
+    rData.m_aContext.getPageSize( aPaper, width, height );
+    pJobSetup->SetPaperFormat( PaperInfo::fromPSName(OUStringToOString( aPaper, RTL_TEXTENCODING_ISO_8859_1 )) );
+    pJobSetup->SetPaperWidth( 0 );
+    pJobSetup->SetPaperHeight( 0 );
+    if( pJobSetup->GetPaperFormat() == PAPER_USER )
+    {
+        // transform to 100dth mm
+        width               = PtTo10Mu( width );
+        height              = PtTo10Mu( height );
+
+        if( rData.m_eOrientation == psp::orientation::Portrait )
+        {
+            pJobSetup->SetPaperWidth( width );
+            pJobSetup->SetPaperHeight( height );
+        }
+        else
+        {
+            pJobSetup->SetPaperWidth( height );
+            pJobSetup->SetPaperHeight( width );
+        }
+    }
+
+    // copy input slot
+    const PPDKey* pKey = nullptr;
+    const PPDValue* pValue = nullptr;
+
+    pJobSetup->SetPaperBin( 0xffff );
+    if( rData.m_pParser )
+        pKey                    = rData.m_pParser->getKey( "InputSlot" );
+    if( pKey )
+        pValue                  = rData.m_aContext.getValue( pKey );
+    if( pKey && pValue )
+    {
+        int nPaperBin;
+        for( nPaperBin = 0;
+             pValue != pKey->getValue( nPaperBin ) &&
+                 nPaperBin < pKey->countValues();
+             nPaperBin++ );
+        pJobSetup->SetPaperBin(
+            (nPaperBin == pKey->countValues()
+             || pValue == pKey->getDefaultValue())
+            ? 0xffff : nPaperBin);
+    }
+
+    // copy duplex
+    pKey = nullptr;
+    pValue = nullptr;
+
+    pJobSetup->SetDuplexMode( DuplexMode::Unknown );
+    if( rData.m_pParser )
+        pKey = rData.m_pParser->getKey( "Duplex" );
+    if( pKey )
+        pValue = rData.m_aContext.getValue( pKey );
+    if( pKey && pValue )
+    {
+        if( pValue->m_aOption.equalsIgnoreAsciiCase( "None" ) ||
+            pValue->m_aOption.startsWithIgnoreAsciiCase( "Simplex" )
+           )
+        {
+            pJobSetup->SetDuplexMode( DuplexMode::Off );
+        }
+        else if( pValue->m_aOption.equalsIgnoreAsciiCase( "DuplexNoTumble" ) )
+        {
+            pJobSetup->SetDuplexMode( DuplexMode::LongEdge );
+        }
+        else if( pValue->m_aOption.equalsIgnoreAsciiCase( "DuplexTumble" ) )
+        {
+            pJobSetup->SetDuplexMode( DuplexMode::ShortEdge );
+        }
+    }
+
+    // copy the whole context
+    if( pJobSetup->GetDriverData() )
+        std::free( const_cast<sal_uInt8*>(pJobSetup->GetDriverData()) );
+
+    sal_uInt32 nBytes;
+    void* pBuffer = nullptr;
+    if( rData.getStreamBuffer( pBuffer, nBytes ) )
+    {
+        pJobSetup->SetDriverDataLen( nBytes );
+        pJobSetup->SetDriverData( static_cast<sal_uInt8*>(pBuffer) );
+    }
+    else
+    {
+        pJobSetup->SetDriverDataLen( 0 );
+        pJobSetup->SetDriverData( nullptr );
+    }
+}
+
+// SalInstance
+
+SalInfoPrinter* SvpSalInstance::CreateInfoPrinter( SalPrinterQueueInfo* pQueueInfo,
+                                                   ImplJobSetup*        pJobSetup )
+{
+    // create and initialize SalInfoPrinter
+    SvpSalInfoPrinter* pPrinter = new SvpSalInfoPrinter;
+
+    if( pJobSetup )
+    {
+        PrinterInfoManager& rManager( PrinterInfoManager::get() );
+        PrinterInfo aInfo( rManager.getPrinterInfo( pQueueInfo->maPrinterName ) );
+        pPrinter->m_aJobData = aInfo;
+        pPrinter->m_aPrinterGfx.Init( pPrinter->m_aJobData );
+
+        if( pJobSetup->GetDriverData() )
+            JobData::constructFromStreamBuffer( pJobSetup->GetDriverData(),
+                                                pJobSetup->GetDriverDataLen(), aInfo );
+
+        pJobSetup->SetSystem( JOBSETUP_SYSTEM_UNIX );
+        pJobSetup->SetPrinterName( pQueueInfo->maPrinterName );
+        pJobSetup->SetDriver( aInfo.m_aDriverName );
+        copyJobDataToJobSetup( pJobSetup, aInfo );
+    }
+
+    return pPrinter;
+}
+
+void SvpSalInstance::DestroyInfoPrinter( SalInfoPrinter* pPrinter )
+{
+    delete pPrinter;
+}
+
+std::unique_ptr<SalPrinter> SvpSalInstance::CreatePrinter( SalInfoPrinter* pInfoPrinter )
+{
+    // create and initialize SalPrinter
+    SvpSalPrinter* pPrinter = new SvpSalPrinter( pInfoPrinter );
+    pPrinter->m_aJobData = static_cast<SvpSalInfoPrinter*>(pInfoPrinter)->m_aJobData;
+
+    return std::unique_ptr<SalPrinter>(pPrinter);
+}
+
+void SvpSalInstance::GetPrinterQueueInfo( ImplPrnQueueList* pList )
+{
+    PrinterInfoManager& rManager( PrinterInfoManager::get() );
+    static const char* pNoSyncDetection = getenv( "SAL_DISABLE_SYNCHRONOUS_PRINTER_DETECTION" );
+    if( ! pNoSyncDetection || ! *pNoSyncDetection )
+    {
+        // #i62663# synchronize possible asynchronouse printer detection now
+        rManager.checkPrintersChanged( true );
+    }
+    ::std::vector< OUString > aPrinters;
+    rManager.listPrinters( aPrinters );
+
+    for (auto const& printer : aPrinters)
+    {
+        const PrinterInfo& rInfo( rManager.getPrinterInfo(printer) );
+        // create new entry
+        std::unique_ptr<SalPrinterQueueInfo> pInfo(new SalPrinterQueueInfo);
+        pInfo->maPrinterName    = printer;
+        pInfo->maDriver         = rInfo.m_aDriverName;
+        pInfo->maLocation       = rInfo.m_aLocation;
+        pInfo->maComment        = rInfo.m_aComment;
+
+        sal_Int32 nIndex = 0;
+        while( nIndex != -1 )
+        {
+            OUString aToken( rInfo.m_aFeatures.getToken( 0, ',', nIndex ) );
+            if( aToken.startsWith( "pdf=" ) )
+            {
+                pInfo->maLocation = getPdfDir( rInfo );
+                break;
+            }
+        }
+
+        pList->Add( std::move(pInfo) );
+    }
+}
+
+void SvpSalInstance::GetPrinterQueueState( SalPrinterQueueInfo* )
+{
+}
+
+OUString SvpSalInstance::GetDefaultPrinter()
+{
+    PrinterInfoManager& rManager( PrinterInfoManager::get() );
+    return rManager.getDefaultPrinter();
+}
+
+void SvpSalInstance::PostPrintersChanged()
+{
+    SvpSalInstance *pInst = SvpSalInstance::s_pDefaultInstance;
+    for (auto pSalFrame : pInst->getFrames() )
+        pInst->PostEvent( pSalFrame, nullptr, SalEvent::PrinterChanged );
+}
+
+std::unique_ptr<GenPspGraphics> SvpSalInstance::CreatePrintGraphics()
+{
+    return std::make_unique<GenPspGraphics>();
+}
+
+bool SvpSalInfoPrinter::Setup( weld::Window*, ImplJobSetup* )
+{
+    return false;
+}
+
+SvpSalPrinter::SvpSalPrinter( SalInfoPrinter* pInfoPrinter )
+    : PspSalPrinter( pInfoPrinter )
+{
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/headless/svptext.cxx b/vcl/headless/svptext.cxx
new file mode 100644
index 000000000..d702ec89a
--- /dev/null
+++ b/vcl/headless/svptext.cxx
@@ -0,0 +1,110 @@
+/* -*- 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 <sal/types.h>
+#include <vcl/fontcharmap.hxx>
+#include <basegfx/range/b2ibox.hxx>
+#include <headless/svpgdi.hxx>
+#include <impfontmetricdata.hxx>
+#include <sallayout.hxx>
+
+void SvpSalGraphics::SetFont(LogicalFontInstance* pIFSD, int nFallbackLevel)
+{
+    m_aTextRenderImpl.SetFont(pIFSD, nFallbackLevel);
+}
+
+void SvpSalGraphics::GetFontMetric( ImplFontMetricDataRef& xFontMetric, int nFallbackLevel )
+{
+    m_aTextRenderImpl.GetFontMetric(xFontMetric, nFallbackLevel);
+}
+
+FontCharMapRef SvpSalGraphics::GetFontCharMap() const
+{
+    return m_aTextRenderImpl.GetFontCharMap();
+}
+
+bool SvpSalGraphics::GetFontCapabilities(vcl::FontCapabilities &rFontCapabilities) const
+{
+    return m_aTextRenderImpl.GetFontCapabilities(rFontCapabilities);
+}
+
+void SvpSalGraphics::GetDevFontList( vcl::font::PhysicalFontCollection* pFontCollection )
+{
+    m_aTextRenderImpl.GetDevFontList(pFontCollection);
+}
+
+void SvpSalGraphics::ClearDevFontCache()
+{
+    m_aTextRenderImpl.ClearDevFontCache();
+}
+
+bool SvpSalGraphics::AddTempDevFont( vcl::font::PhysicalFontCollection* pFontCollection,
+    const OUString& rFileURL, const OUString& rFontName)
+{
+    return m_aTextRenderImpl.AddTempDevFont(pFontCollection, rFileURL, rFontName);
+}
+
+bool SvpSalGraphics::CreateFontSubset(
+    const OUString& rToFile,
+    const vcl::font::PhysicalFontFace* pFont,
+    const sal_GlyphId* pGlyphIds,
+    const sal_uInt8* pEncoding,
+    sal_Int32* pWidths,
+    int nGlyphCount,
+    FontSubsetInfo& rInfo)
+{
+    return m_aTextRenderImpl.CreateFontSubset(rToFile, pFont, pGlyphIds, pEncoding, pWidths, nGlyphCount, rInfo);
+}
+
+const void* SvpSalGraphics::GetEmbedFontData(const vcl::font::PhysicalFontFace* pFont, tools::Long* pDataLen)
+{
+    return m_aTextRenderImpl.GetEmbedFontData(pFont, pDataLen);
+}
+
+void SvpSalGraphics::FreeEmbedFontData( const void* pData, tools::Long nLen )
+{
+    m_aTextRenderImpl.FreeEmbedFontData(pData, nLen);
+}
+
+void SvpSalGraphics::GetGlyphWidths( const vcl::font::PhysicalFontFace* pFont,
+                                   bool bVertical,
+                                   std::vector< sal_Int32 >& rWidths,
+                                   Ucs2UIntMap& rUnicodeEnc )
+{
+    m_aTextRenderImpl.GetGlyphWidths(pFont, bVertical, rWidths, rUnicodeEnc);
+}
+
+std::unique_ptr<GenericSalLayout> SvpSalGraphics::GetTextLayout(int nFallbackLevel)
+{
+    return m_aTextRenderImpl.GetTextLayout(nFallbackLevel);
+}
+
+void SvpSalGraphics::DrawTextLayout(const GenericSalLayout& rLayout)
+{
+    m_aTextRenderImpl.DrawTextLayout(rLayout, *this);
+}
+
+void SvpSalGraphics::SetTextColor( Color nColor )
+{
+    m_aTextRenderImpl.SetTextColor(nColor);
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/headless/svpvd.cxx b/vcl/headless/svpvd.cxx
new file mode 100644
index 000000000..162bd78ec
--- /dev/null
+++ b/vcl/headless/svpvd.cxx
@@ -0,0 +1,153 @@
+/* -*- 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 .
+ */
+
+#ifndef IOS
+
+#include <headless/svpbmp.hxx>
+#include <headless/svpinst.hxx>
+#include <headless/svpvd.hxx>
+#include <headless/svpgdi.hxx>
+
+#include <basegfx/vector/b2ivector.hxx>
+#include <comphelper/lok.hxx>
+
+#include <cairo.h>
+
+using namespace basegfx;
+
+SvpSalVirtualDevice::SvpSalVirtualDevice(cairo_surface_t* pRefSurface, cairo_surface_t* pPreExistingTarget)
+    : m_pRefSurface(pRefSurface)
+    , m_pSurface(pPreExistingTarget)
+    , m_bOwnsSurface(!pPreExistingTarget)
+{
+    cairo_surface_reference(m_pRefSurface);
+}
+
+SvpSalVirtualDevice::~SvpSalVirtualDevice()
+{
+    if (m_bOwnsSurface)
+        cairo_surface_destroy(m_pSurface);
+    cairo_surface_destroy(m_pRefSurface);
+}
+
+SvpSalGraphics* SvpSalVirtualDevice::AddGraphics(SvpSalGraphics* pGraphics)
+{
+    pGraphics->setSurface(m_pSurface, m_aFrameSize);
+    m_aGraphics.push_back(pGraphics);
+    return pGraphics;
+}
+
+SalGraphics* SvpSalVirtualDevice::AcquireGraphics()
+{
+    return AddGraphics(new SvpSalGraphics());
+}
+
+void SvpSalVirtualDevice::ReleaseGraphics( SalGraphics* pGraphics )
+{
+    m_aGraphics.erase(std::remove(m_aGraphics.begin(), m_aGraphics.end(), dynamic_cast<SvpSalGraphics*>(pGraphics)), m_aGraphics.end());
+    delete pGraphics;
+}
+
+bool SvpSalVirtualDevice::SetSize( tools::Long nNewDX, tools::Long nNewDY )
+{
+    return SetSizeUsingBuffer(nNewDX, nNewDY, nullptr);
+}
+
+void SvpSalVirtualDevice::CreateSurface(tools::Long nNewDX, tools::Long nNewDY, sal_uInt8 *const pBuffer)
+{
+    if (m_pSurface)
+    {
+        cairo_surface_destroy(m_pSurface);
+    }
+
+    if (pBuffer)
+    {
+        // The buffer should only be set by VirtualDevice::SetOutputSizePixelScaleOffsetAndLOKBuffer()
+        // when used to draw a tile for LOK. It cannot be used for something else, because otherwise
+        // this would need a way to detect whether this is a tiled paint that needs LOK handling
+        // or whether it's that something else that just might happen to be called with LOK active.
+        assert(comphelper::LibreOfficeKit::isActive());
+        // Force scaling of the painting
+        double fScale = comphelper::LibreOfficeKit::getDPIScale();
+
+        m_pSurface = cairo_image_surface_create_for_data(pBuffer, CAIRO_FORMAT_ARGB32,
+                            nNewDX, nNewDY, cairo_format_stride_for_width(CAIRO_FORMAT_ARGB32, nNewDX));
+        dl_cairo_surface_set_device_scale(m_pSurface, fScale, fScale);
+    }
+    else if(nNewDX <= 32 && nNewDY <= 32)
+    {
+        double fXScale, fYScale;
+        dl_cairo_surface_get_device_scale(m_pRefSurface, &fXScale, &fYScale);
+        nNewDX *= fXScale;
+        nNewDY *= fYScale;
+
+        // Force image-based surface if small. Small VirtualDevice instances are often used for small
+        // temporary bitmaps that will eventually have GetBitmap() called on them, which would cause
+        // X Server roundtrip with Xlib-based surface, which may be way more costly than doing the drawing
+        // in software (which should be fairly cheap for small surfaces anyway).
+        m_pSurface = cairo_surface_create_similar_image(m_pRefSurface, CAIRO_FORMAT_ARGB32, nNewDX, nNewDY);
+        dl_cairo_surface_set_device_scale(m_pSurface, fXScale, fYScale);
+    }
+    else
+    {
+        m_pSurface = cairo_surface_create_similar(m_pRefSurface, CAIRO_CONTENT_COLOR_ALPHA, nNewDX, nNewDY);
+        // Device scale is inherited in this case.
+    }
+
+    SAL_WARN_IF(cairo_surface_status(m_pSurface) != CAIRO_STATUS_SUCCESS, "vcl", "surface of size " << nNewDX << " by " << nNewDY << " creation failed with status of: " << cairo_status_to_string(cairo_surface_status(m_pSurface)));
+}
+
+bool SvpSalVirtualDevice::SetSizeUsingBuffer( tools::Long nNewDX, tools::Long nNewDY,
+        sal_uInt8 *const pBuffer)
+{
+    if (nNewDX == 0)
+        nNewDX = 1;
+    if (nNewDY == 0)
+        nNewDY = 1;
+
+    if (!m_pSurface || m_aFrameSize.getX() != nNewDX ||
+                       m_aFrameSize.getY() != nNewDY)
+    {
+        m_aFrameSize = basegfx::B2IVector(nNewDX, nNewDY);
+
+        if (m_bOwnsSurface)
+            CreateSurface(nNewDX, nNewDY, pBuffer);
+
+        assert(m_pSurface);
+
+        // update device in existing graphics
+        for (auto const& graphic : m_aGraphics)
+            graphic->setSurface(m_pSurface, m_aFrameSize);
+    }
+    return true;
+}
+
+tools::Long SvpSalVirtualDevice::GetWidth() const
+{
+    return m_pSurface ? m_aFrameSize.getX() : 0;
+}
+
+tools::Long SvpSalVirtualDevice::GetHeight() const
+{
+    return m_pSurface ? m_aFrameSize.getY() : 0;
+}
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */