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

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

11 files changed, 1822 insertions, 0 deletions

diff --git a/vcl/inc/pdf/BitmapID.hxx b/vcl/inc/pdf/BitmapID.hxx
new file mode 100644
index 000000000..afc9aff9f
--- /dev/null
+++ b/vcl/inc/pdf/BitmapID.hxx
@@ -0,0 +1,41 @@
+/* -*- 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/.
+ *
+ */
+
+#pragma once
+
+#include <vcl/dllapi.h>
+#include <vcl/checksum.hxx>
+#include <tools/gen.hxx>
+
+namespace vcl::pdf
+{
+struct BitmapID
+{
+    Size m_aPixelSize;
+    sal_Int32 m_nSize;
+    BitmapChecksum m_nChecksum;
+    BitmapChecksum m_nMaskChecksum;
+
+    BitmapID()
+        : m_nSize(0)
+        , m_nChecksum(0)
+        , m_nMaskChecksum(0)
+    {
+    }
+
+    bool operator==(const BitmapID& rComp) const
+    {
+        return (m_aPixelSize == rComp.m_aPixelSize && m_nSize == rComp.m_nSize
+                && m_nChecksum == rComp.m_nChecksum && m_nMaskChecksum == rComp.m_nMaskChecksum);
+    }
+};
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/inc/pdf/ExternalPDFStreams.hxx b/vcl/inc/pdf/ExternalPDFStreams.hxx
new file mode 100644
index 000000000..45b15f7a7
--- /dev/null
+++ b/vcl/inc/pdf/ExternalPDFStreams.hxx
@@ -0,0 +1,75 @@
+/* -*- 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/.
+ */
+
+#pragma once
+
+#include <sal/types.h>
+#include <sal/log.hxx>
+#include <vcl/dllapi.h>
+
+#include <map>
+#include <vector>
+#include <memory>
+
+#include <vcl/filter/pdfdocument.hxx>
+#include <vcl/BinaryDataContainer.hxx>
+
+namespace vcl
+{
+// A external PDF stream, which stores the PDF stream data as byte array.
+// This struct is also responsible to parsing the stream as a PDFDocument,
+// and store its instance for the life-cycle of the struct, so that it
+// reused to avoid unnecessary parsing.
+struct VCL_DLLPUBLIC ExternalPDFStream
+{
+    BinaryDataContainer maDataContainer;
+    std::shared_ptr<filter::PDFDocument> mpPDFDocument;
+    std::map<sal_Int32, sal_Int32> maCopiedResources;
+
+    std::map<sal_Int32, sal_Int32>& getCopiedResources() { return maCopiedResources; }
+
+    std::shared_ptr<filter::PDFDocument>& getPDFDocument()
+    {
+        if (!mpPDFDocument)
+        {
+            SvMemoryStream aPDFStream;
+            aPDFStream.WriteBytes(maDataContainer.getData(), maDataContainer.getSize());
+            aPDFStream.Seek(0);
+            auto pPDFDocument = std::make_shared<filter::PDFDocument>();
+            if (!pPDFDocument->ReadWithPossibleFixup(aPDFStream))
+            {
+                SAL_WARN("vcl.pdfwriter",
+                         "PDFWriterImpl::writeReferenceXObject: reading the PDF document failed");
+            }
+            else
+            {
+                mpPDFDocument = pPDFDocument;
+            }
+        }
+        return mpPDFDocument;
+    }
+};
+
+// Class to manage external PDF streams, for the de-duplication purpose.
+class ExternalPDFStreams
+{
+private:
+    std::map<std::vector<sal_uInt8>, sal_Int32> maStreamIndexMap;
+    std::vector<ExternalPDFStream> maStreamList;
+
+public:
+    ExternalPDFStreams() {}
+
+    sal_Int32 store(BinaryDataContainer const& rDataContainer);
+
+    ExternalPDFStream& get(sal_uInt32 nIndex);
+};
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/inc/pdf/Matrix3.hxx b/vcl/inc/pdf/Matrix3.hxx
new file mode 100644
index 000000000..795b2af4b
--- /dev/null
+++ b/vcl/inc/pdf/Matrix3.hxx
@@ -0,0 +1,51 @@
+/* -*- 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/.
+ *
+ */
+
+#pragma once
+
+#include <vcl/dllapi.h>
+#include <tools/gen.hxx>
+
+namespace vcl::pdf
+{
+// matrix helper class
+// TODO: use basegfx matrix class instead or derive from it
+
+/*  for sparse matrices of the form (2D linear transformations)
+ *  f[0] f[1] 0
+ *  f[2] f[3] 0
+ *  f[4] f[5] 1
+ */
+class Matrix3
+{
+    double f[6];
+
+    void set(const double* pn)
+    {
+        for (int i = 0; i < 6; i++)
+            f[i] = pn[i];
+    }
+
+public:
+    Matrix3();
+
+    void skew(double alpha, double beta);
+    void scale(double sx, double sy);
+    void rotate(double angle);
+    void translate(double tx, double ty);
+    void invert();
+
+    double get(size_t i) const { return f[i]; }
+
+    Point transform(const Point& rPoint) const;
+};
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/inc/pdf/PdfConfig.hxx b/vcl/inc/pdf/PdfConfig.hxx
new file mode 100644
index 000000000..235fd008e
--- /dev/null
+++ b/vcl/inc/pdf/PdfConfig.hxx
@@ -0,0 +1,18 @@
+/* -*- 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/.
+ *
+ */
+
+#pragma once
+
+namespace vcl::pdf
+{
+double getDefaultPdfResolutionDpi();
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/inc/pdf/ResourceDict.hxx b/vcl/inc/pdf/ResourceDict.hxx
new file mode 100644
index 000000000..57ecb8e0f
--- /dev/null
+++ b/vcl/inc/pdf/ResourceDict.hxx
@@ -0,0 +1,39 @@
+/* -*- 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/.
+ *
+ */
+
+#pragma once
+
+#include <vcl/dllapi.h>
+#include <rtl/strbuf.hxx>
+#include <map>
+
+namespace vcl::pdf
+{
+enum class ResourceKind
+{
+    XObject,
+    ExtGState,
+    Shading,
+    Pattern
+};
+
+struct ResourceDict
+{
+    // note: handle fonts globally for performance
+    std::map<OString, sal_Int32> m_aXObjects;
+    std::map<OString, sal_Int32> m_aExtGStates;
+    std::map<OString, sal_Int32> m_aShadings;
+    std::map<OString, sal_Int32> m_aPatterns;
+
+    void append(OStringBuffer& rBuffer, sal_Int32 nFontDictObject);
+};
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/inc/pdf/XmpMetadata.hxx b/vcl/inc/pdf/XmpMetadata.hxx
new file mode 100644
index 000000000..7526d2bf9
--- /dev/null
+++ b/vcl/inc/pdf/XmpMetadata.hxx
@@ -0,0 +1,48 @@
+/* -*- 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/.
+ *
+ */
+
+#pragma once
+
+#include <vcl/dllapi.h>
+#include <rtl/string.hxx>
+#include <tools/stream.hxx>
+#include <memory>
+
+namespace vcl::pdf
+{
+class XmpMetadata
+{
+private:
+    bool mbWritten;
+    std::unique_ptr<SvMemoryStream> mpMemoryStream;
+
+public:
+    OString msTitle;
+    OString msAuthor;
+    OString msSubject;
+    OString msProducer;
+    OString msKeywords;
+    OString m_sCreatorTool;
+    OString m_sCreateDate;
+
+    sal_Int32 mnPDF_A;
+    bool mbPDF_UA;
+
+public:
+    XmpMetadata();
+    sal_uInt64 getSize();
+    const void* getData();
+
+private:
+    void write();
+};
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/inc/pdf/objectcopier.hxx b/vcl/inc/pdf/objectcopier.hxx
new file mode 100644
index 000000000..f9b05725c
--- /dev/null
+++ b/vcl/inc/pdf/objectcopier.hxx
@@ -0,0 +1,65 @@
+/* -*- 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/.
+ */
+
+#pragma once
+
+#include <map>
+#include <vector>
+
+#include <rtl/strbuf.hxx>
+#include <rtl/string.hxx>
+#include <sal/types.h>
+#include <vcl/dllapi.h>
+
+class SvMemoryStream;
+
+namespace vcl
+{
+class PDFObjectContainer;
+namespace filter
+{
+class PDFObjectElement;
+class PDFElement;
+}
+
+/// Copies objects from one PDF file into another one.
+class PDFObjectCopier
+{
+    PDFObjectContainer& m_rContainer;
+
+    void copyRecursively(OStringBuffer& rLine, filter::PDFElement& rInputElement,
+                         SvMemoryStream& rDocBuffer,
+                         std::map<sal_Int32, sal_Int32>& rCopiedResources);
+
+public:
+    PDFObjectCopier(PDFObjectContainer& rContainer);
+
+    /// Copies resources of a given kind from an external page to the output,
+    /// returning what has to be included in the new resource dictionary.
+    OString copyExternalResources(filter::PDFObjectElement& rPage, const OString& rKind,
+                                  std::map<sal_Int32, sal_Int32>& rCopiedResources);
+
+    /// Copies a single resource from an external document, returns the new
+    /// object ID in our document.
+    sal_Int32 copyExternalResource(SvMemoryStream& rDocBuffer, filter::PDFObjectElement& rObject,
+                                   std::map<sal_Int32, sal_Int32>& rCopiedResources);
+
+    /// Copies resources of pPage into rLine.
+    void copyPageResources(filter::PDFObjectElement* pPage, OStringBuffer& rLine);
+
+    void copyPageResources(filter::PDFObjectElement* pPage, OStringBuffer& rLine,
+                           std::map<sal_Int32, sal_Int32>& rCopiedResources);
+
+    /// Copies page one or more page streams from rContentStreams into rStream.
+    static sal_Int32 copyPageStreams(std::vector<filter::PDFObjectElement*>& rContentStreams,
+                                     SvMemoryStream& rStream, bool& rCompressed);
+};
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/inc/pdf/pdfbuildin_fonts.hxx b/vcl/inc/pdf/pdfbuildin_fonts.hxx
new file mode 100644
index 000000000..fbcc04a9e
--- /dev/null
+++ b/vcl/inc/pdf/pdfbuildin_fonts.hxx
@@ -0,0 +1,81 @@
+/* -*- 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 .
+ */
+
+#pragma once
+
+#include <sal/config.h>
+
+#include <font/PhysicalFontFace.hxx>
+#include <fontinstance.hxx>
+
+namespace vcl::pdf
+{
+struct BuildinFont
+{
+    const char* m_pName;
+    const char* m_pStyleName;
+    const char* m_pPSName;
+    int const m_nAscent;
+    int const m_nDescent;
+    FontFamily const m_eFamily;
+    rtl_TextEncoding const m_eCharSet;
+    FontPitch const m_ePitch;
+    FontWidth const m_eWidthType;
+    FontWeight const m_eWeight;
+    FontItalic const m_eItalic;
+    int const m_aWidths[256];
+    mutable FontCharMapRef m_xFontCharMap;
+
+    OString getNameObject() const;
+    const FontCharMapRef& GetFontCharMap() const;
+    FontAttributes GetFontAttributes() const;
+};
+
+class BuildinFontInstance final : public LogicalFontInstance
+{
+    bool ImplGetGlyphBoundRect(sal_GlyphId nID, tools::Rectangle& rRect, bool) const override;
+
+public:
+    BuildinFontInstance(const vcl::font::PhysicalFontFace&, const vcl::font::FontSelectPattern&);
+
+    bool GetGlyphOutline(sal_GlyphId nId, basegfx::B2DPolyPolygon& rPoly, bool) const override;
+};
+
+class BuildinFontFace final : public vcl::font::PhysicalFontFace
+{
+    static const BuildinFont m_aBuildinFonts[14];
+    const BuildinFont& mrBuildin;
+
+    rtl::Reference<LogicalFontInstance>
+    CreateFontInstance(const vcl::font::FontSelectPattern& rFSD) const override;
+
+public:
+    explicit BuildinFontFace(int nId);
+
+    const BuildinFont& GetBuildinFont() const { return mrBuildin; }
+    sal_IntPtr GetFontId() const override { return reinterpret_cast<sal_IntPtr>(&mrBuildin); }
+    FontCharMapRef GetFontCharMap() const override { return mrBuildin.GetFontCharMap(); }
+    bool GetFontCapabilities(vcl::FontCapabilities&) const override { return false; }
+
+    static const BuildinFont& Get(int nId) { return m_aBuildinFonts[nId]; }
+};
+
+} // namespace vcl::pdf
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/inc/pdf/pdfcompat.hxx b/vcl/inc/pdf/pdfcompat.hxx
new file mode 100644
index 000000000..8f629b3bc
--- /dev/null
+++ b/vcl/inc/pdf/pdfcompat.hxx
@@ -0,0 +1,42 @@
+/* -*- 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/.
+ */
+
+#pragma once
+
+#include <config_features.h>
+#include <tools/gen.hxx>
+#include <tools/stream.hxx>
+#include <tools/UnitConversion.hxx>
+#include <vcl/graph.hxx>
+
+namespace vcl::pdf
+{
+/// Convert to inch, then assume 96 DPI.
+inline double pointToPixel(const double fPoint, const double fResolutionDPI)
+{
+    return o3tl::convert(fPoint, o3tl::Length::pt, o3tl::Length::in) * fResolutionDPI;
+}
+
+/// Decide if PDF data is old enough to be compatible.
+bool isCompatible(SvStream& rInStream, sal_uInt64 nPos, sal_uInt64 nSize);
+
+/// Converts to highest supported format version (currently 1.6).
+/// Usually used to deal with missing referenced objects in the
+/// source pdf stream.
+bool convertToHighestSupported(SvStream& rInStream, SvStream& rOutStream);
+
+/// Takes care of transparently downgrading the version of the PDF stream in
+/// case it's too new for our PDF export.
+bool getCompatibleStream(SvStream& rInStream, SvStream& rOutStream);
+
+BinaryDataContainer createBinaryDataContainer(SvStream& rStream);
+
+} // end of vcl::filter::ipdf namespace
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/inc/pdf/pdffontcache.hxx b/vcl/inc/pdf/pdffontcache.hxx
new file mode 100644
index 000000000..a6b58d8e7
--- /dev/null
+++ b/vcl/inc/pdf/pdffontcache.hxx
@@ -0,0 +1,71 @@
+/* -*- 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 .
+ */
+
+#pragma once
+
+#include <sal/config.h>
+
+#include <typeinfo>
+
+#include <sal/types.h>
+
+#include <salgdi.hxx>
+
+namespace vcl
+{
+    class PDFFontCache
+    {
+        struct FontIdentifier
+        {
+            sal_IntPtr      m_nFontId;
+            bool            m_bVertical;
+            std::type_info* m_typeFontFace;
+
+            FontIdentifier( const vcl::font::PhysicalFontFace*, bool bVertical );
+
+            // Less than needed for std::set and std::map
+            bool operator<( const FontIdentifier& rRight ) const
+            {
+                std::type_info *pType = rRight.m_typeFontFace;
+
+                return m_nFontId < rRight.m_nFontId ||
+                       ( m_nFontId == rRight.m_nFontId &&
+                       ( m_typeFontFace->before( *pType ) ||
+                       ( *m_typeFontFace == *pType && m_bVertical < rRight.m_bVertical ) ) );
+            }
+        };
+        struct FontData
+        {
+            std::vector< sal_Int32 >  m_nWidths;
+            Ucs2UIntMap  m_aGlyphIdToIndex;
+        };
+        typedef std::map< FontIdentifier, sal_uInt32 > FontToIndexMap;
+
+        std::vector< FontData >     m_aFonts;
+        FontToIndexMap              m_aFontToIndex;
+
+        FontData& getFont( const vcl::font::PhysicalFontFace*, bool bVertical );
+        public:
+        PDFFontCache() {}
+
+        sal_Int32 getGlyphWidth( const vcl::font::PhysicalFontFace*, sal_GlyphId, bool bVertical, SalGraphics* );
+    };
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/inc/pdf/pdfwriter_impl.hxx b/vcl/inc/pdf/pdfwriter_impl.hxx
new file mode 100644
index 000000000..274f65f23
--- /dev/null
+++ b/vcl/inc/pdf/pdfwriter_impl.hxx
@@ -0,0 +1,1291 @@
+/* -*- 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 .
+ */
+
+#pragma once
+
+#include <sal/config.h>
+
+#include <map>
+#include <list>
+#include <unordered_map>
+#include <memory>
+#include <string_view>
+#include <vector>
+
+#include <pdf/ResourceDict.hxx>
+#include <pdf/BitmapID.hxx>
+#include <pdf/Matrix3.hxx>
+
+#include <com/sun/star/lang/Locale.hpp>
+#include <com/sun/star/util/XURLTransformer.hpp>
+#include <com/sun/star/uno/Sequence.h>
+#include <osl/file.hxx>
+#include <rtl/cipher.h>
+#include <rtl/strbuf.hxx>
+#include <rtl/ustring.hxx>
+#include <tools/gen.hxx>
+#include <vcl/bitmapex.hxx>
+#include <vcl/gradient.hxx>
+#include <vcl/graphictools.hxx>
+#include <vcl/hatch.hxx>
+#include <vcl/virdev.hxx>
+#include <vcl/pdfwriter.hxx>
+#include <vcl/wall.hxx>
+#include <o3tl/safeint.hxx>
+#include <o3tl/typed_flags_set.hxx>
+#include <o3tl/lru_map.hxx>
+#include <comphelper/hash.hxx>
+#include <tools/stream.hxx>
+#include <vcl/BinaryDataContainer.hxx>
+
+#include <vcl/filter/pdfobjectcontainer.hxx>
+#include <vcl/settings.hxx>
+#include <pdf/ExternalPDFStreams.hxx>
+#include <pdf/pdfbuildin_fonts.hxx>
+#include <pdf/pdffontcache.hxx>
+
+class FontSubsetInfo;
+class ZCodec;
+class EncHashTransporter;
+struct BitStreamState;
+namespace vcl::font { class PhysicalFontFace; }
+class SvStream;
+class SvMemoryStream;
+
+// the maximum password length
+constexpr sal_Int32 ENCRYPTED_PWD_SIZE = 32;
+constexpr sal_Int32 MD5_DIGEST_SIZE = 16;
+// security 128 bit
+constexpr sal_Int32 SECUR_128BIT_KEY = 16;
+// maximum length of MD5 digest input, in step 2 of algorithm 3.1
+// PDF spec ver. 1.4: see there for details
+constexpr sal_Int32 MAXIMUM_RC4_KEY_LENGTH = SECUR_128BIT_KEY + 3 + 2;
+
+namespace vcl::pdf
+{
+
+enum class GraphicsStateUpdateFlags {
+    Font                  = 0x0001,
+    MapMode               = 0x0002,
+    LineColor             = 0x0004,
+    FillColor             = 0x0008,
+    ClipRegion            = 0x0040,
+    LayoutMode            = 0x0100,
+    TransparentPercent    = 0x0200,
+    DigitLanguage         = 0x0400,
+    All                   = 0x077f
+};
+
+} // end vcl::pdf
+
+namespace o3tl {
+    template<> struct typed_flags<vcl::pdf::GraphicsStateUpdateFlags> : is_typed_flags<vcl::pdf::GraphicsStateUpdateFlags, 0x077f> {};
+}
+
+namespace vcl
+{
+
+using namespace vcl::pdf;
+
+class PDFStreamIf;
+
+namespace filter
+{
+class PDFObjectElement;
+}
+
+namespace pdf
+{
+constexpr sal_Int32 g_nInheritedPageWidth = 595;  // default A4 in inch/72
+constexpr sal_Int32 g_nInheritedPageHeight = 842; // default A4 in inch/72
+
+struct PDFPage
+{
+    VclPtr<PDFWriterImpl>       m_pWriter;
+    double                      m_nPageWidth;           // in inch/72
+    double                      m_nPageHeight;          // in inch/72
+    /**
+     * A positive number that gives the size of default user space units, in multiples of points.
+     * Typically 1, larger if page size is > 508 cm.
+     */
+    sal_Int32 m_nUserUnit;
+    PDFWriter::Orientation      m_eOrientation;
+    sal_Int32                   m_nPageObject;
+    std::vector<sal_Int32>      m_aStreamObjects;
+    sal_Int32                   m_nStreamLengthObject;
+    sal_uInt64                  m_nBeginStreamPos;
+    std::vector<sal_Int32>      m_aAnnotations;
+    std::vector<sal_Int32>      m_aMCIDParents;
+    PDFWriter::PageTransition   m_eTransition;
+    sal_uInt32                  m_nTransTime;
+
+    PDFPage( PDFWriterImpl* pWriter, double nPageWidth, double nPageHeight, PDFWriter::Orientation eOrientation );
+
+    void beginStream();
+    void endStream();
+    bool emit( sal_Int32 nParentPage );
+
+    // converts point from ref device coordinates to
+    // page coordinates and appends the point to the buffer
+    // if pOutPoint is set it will be updated to the emitted point
+    // (in PDF map mode, that is 10th of point)
+    void appendPoint( const Point& rPoint, OStringBuffer& rBuffer ) const;
+    // appends a B2DPoint without further transformation
+    void appendPixelPoint( const basegfx::B2DPoint& rPoint, OStringBuffer& rBuffer ) const;
+    // appends a rectangle
+    void appendRect( const tools::Rectangle& rRect, OStringBuffer& rBuffer ) const;
+    // converts a rectangle to 10th points page space
+    void convertRect( tools::Rectangle& rRect ) const;
+    // appends a polygon optionally closing it
+    void appendPolygon( const tools::Polygon& rPoly, OStringBuffer& rBuffer, bool bClose = true ) const;
+    // appends a polygon optionally closing it
+    void appendPolygon( const basegfx::B2DPolygon& rPoly, OStringBuffer& rBuffer ) const;
+    // appends a polypolygon optionally closing the subpaths
+    void appendPolyPolygon( const tools::PolyPolygon& rPolyPoly, OStringBuffer& rBuffer ) const;
+    // appends a polypolygon optionally closing the subpaths
+    void appendPolyPolygon( const basegfx::B2DPolyPolygon& rPolyPoly, OStringBuffer& rBuffer ) const;
+    // converts a length (either vertical or horizontal; this
+    // can be important if the source MapMode is not
+    // symmetrical) to page length and appends it to the buffer
+    // if pOutLength is set it will be updated to the emitted length
+    // (in PDF map mode, that is 10th of point)
+    void appendMappedLength( sal_Int32 nLength, OStringBuffer& rBuffer, bool bVertical = true, sal_Int32* pOutLength = nullptr ) const;
+    // the same for double values
+    void appendMappedLength( double fLength, OStringBuffer& rBuffer, bool bVertical = true, sal_Int32 nPrecision = 5 ) const;
+    // appends LineInfo
+    // returns false if too many dash array entry were created for
+    // the implementation limits of some PDF readers
+    bool appendLineInfo( const LineInfo& rInfo, OStringBuffer& rBuffer ) const;
+    // appends a horizontal waveline with vertical offset (helper for drawWaveLine)
+    void appendWaveLine( sal_Int32 nLength, sal_Int32 nYOffset, sal_Int32 nDelta, OStringBuffer& rBuffer ) const;
+
+    void appendMatrix3(Matrix3 const & rMatrix, OStringBuffer& rBuffer);
+
+    double getHeight() const;
+};
+
+/// Contains information to emit a reference XObject.
+struct ReferenceXObjectEmit
+{
+    /// ID of the Form XObject, if any.
+    sal_Int32 m_nFormObject;
+    /// ID of the vector/embedded object, if m_nFormObject is used.
+    sal_Int32 m_nEmbeddedObject;
+    /// ID of the bitmap object, if m_nFormObject is used.
+    sal_Int32 m_nBitmapObject;
+    /// Size of the bitmap replacement, in pixels.
+    Size m_aPixelSize;
+    /// PDF data from the graphic object, if not writing a reference XObject.
+    sal_Int32 m_nExternalPDFDataIndex;
+    sal_Int32 m_nExternalPDFPageIndex;
+
+    ReferenceXObjectEmit()
+        : m_nFormObject(0)
+        , m_nEmbeddedObject(0)
+        , m_nBitmapObject(0)
+        , m_nExternalPDFDataIndex(-1)
+        , m_nExternalPDFPageIndex(-1)
+    {
+    }
+
+    /// Returns the ID one should use when referring to this bitmap.
+    sal_Int32 getObject() const;
+
+    bool hasExternalPDFData() const
+    {
+        return m_nExternalPDFDataIndex >= 0;
+    }
+};
+
+struct BitmapEmit
+{
+    BitmapID    m_aID;
+    BitmapEx    m_aBitmap;
+    sal_Int32   m_nObject;
+    ReferenceXObjectEmit m_aReferenceXObject;
+
+    BitmapEmit()
+        : m_nObject(0)
+    {
+    }
+};
+
+struct JPGEmit
+{
+    BitmapID            m_aID;
+    std::unique_ptr<SvMemoryStream>
+                        m_pStream;
+    AlphaMask           m_aAlphaMask;
+    sal_Int32           m_nObject;
+    bool                m_bTrueColor;
+    ReferenceXObjectEmit m_aReferenceXObject;
+
+    JPGEmit()
+        : m_nObject(0)
+        , m_bTrueColor(false)
+    {
+    }
+};
+
+struct GradientEmit
+{
+    Gradient    m_aGradient;
+    Size        m_aSize;
+    sal_Int32   m_nObject;
+};
+
+// for tilings (drawWallpaper, begin/endPattern)
+struct TilingEmit
+{
+    sal_Int32                   m_nObject;
+    tools::Rectangle                   m_aRectangle;
+    Size                        m_aCellSize;
+    SvtGraphicFill::Transform   m_aTransform;
+    ResourceDict                m_aResources;
+    std::unique_ptr<SvMemoryStream> m_pTilingStream;
+
+    TilingEmit()
+            : m_nObject( 0 )
+    {}
+};
+
+// for transparency group XObjects
+struct TransparencyEmit
+{
+    sal_Int32           m_nObject;
+    sal_Int32           m_nExtGStateObject;
+    double              m_fAlpha;
+    tools::Rectangle    m_aBoundRect;
+    std::unique_ptr<SvMemoryStream>  m_pContentStream;
+
+    TransparencyEmit()
+            : m_nObject( 0 ),
+              m_nExtGStateObject( -1 ),
+              m_fAlpha( 0.0 )
+    {}
+};
+
+// font subsets
+class GlyphEmit
+{
+    // performance: actually this should probably a vector;
+    std::vector<sal_Ucs>            m_CodeUnits;
+    sal_uInt8                       m_nSubsetGlyphID;
+    sal_Int32                       m_nGlyphWidth;
+
+public:
+    GlyphEmit() : m_nSubsetGlyphID(0), m_nGlyphWidth(0)
+    {
+    }
+
+    void setGlyphId( sal_uInt8 i_nId ) { m_nSubsetGlyphID = i_nId; }
+    sal_uInt8 getGlyphId() const { return m_nSubsetGlyphID; }
+
+    void setGlyphWidth( sal_Int32 nWidth ) { m_nGlyphWidth = nWidth; }
+    sal_Int32 getGlyphWidth() const { return m_nGlyphWidth; }
+
+    void addCode( sal_Ucs i_cCode )
+    {
+        m_CodeUnits.push_back(i_cCode);
+    }
+    sal_Int32 countCodes() const { return m_CodeUnits.size(); }
+    const std::vector<sal_Ucs>& codes() const { return m_CodeUnits; }
+    sal_Ucs getCode( sal_Int32 i_nIndex ) const
+    {
+        sal_Ucs nRet = 0;
+        if (o3tl::make_unsigned(i_nIndex) < m_CodeUnits.size())
+            nRet = m_CodeUnits[i_nIndex];
+        return nRet;
+    }
+};
+
+struct FontEmit
+{
+    sal_Int32           m_nFontID;
+    std::map<sal_GlyphId, GlyphEmit>     m_aMapping;
+
+    explicit FontEmit( sal_Int32 nID ) : m_nFontID( nID ) {}
+};
+
+struct Glyph
+{
+    sal_Int32   m_nFontID;
+    sal_uInt8   m_nSubsetGlyphID;
+};
+
+struct FontSubset
+{
+    std::vector< FontEmit >        m_aSubsets;
+    std::map<sal_GlyphId, Glyph>         m_aMapping;
+};
+
+struct EmbedFont
+{
+    sal_Int32                       m_nNormalFontID;
+
+    EmbedFont() : m_nNormalFontID( 0 ) {}
+};
+
+struct PDFDest
+{
+    sal_Int32                   m_nPage;
+    PDFWriter::DestAreaType     m_eType;
+    tools::Rectangle                   m_aRect;
+};
+
+//--->i56629
+struct PDFNamedDest
+{
+    OUString               m_aDestName;
+    sal_Int32                   m_nPage;
+    PDFWriter::DestAreaType     m_eType;
+    tools::Rectangle                   m_aRect;
+};
+
+struct PDFOutlineEntry
+{
+    sal_Int32                   m_nObject;
+    sal_Int32                   m_nParentObject;
+    sal_Int32                   m_nNextObject;
+    sal_Int32                   m_nPrevObject;
+    std::vector< sal_Int32 >    m_aChildren;
+    OUString               m_aTitle;
+    sal_Int32                   m_nDestID;
+
+    PDFOutlineEntry()
+            : m_nObject( 0 ),
+              m_nParentObject( 0 ),
+              m_nNextObject( 0 ),
+              m_nPrevObject( 0 ),
+              m_nDestID( -1 )
+    {}
+};
+
+struct PDFAnnotation
+{
+    sal_Int32                   m_nObject;
+    tools::Rectangle                   m_aRect;
+    sal_Int32                   m_nPage;
+
+    PDFAnnotation()
+            : m_nObject( -1 ),
+              m_nPage( -1 )
+    {}
+};
+
+struct PDFLink : public PDFAnnotation
+{
+    sal_Int32                   m_nDest; // set to -1 for URL, to a dest else
+    OUString               m_aURL;
+    sal_Int32                   m_nStructParent; // struct parent entry
+    OUString m_AltText;
+
+    PDFLink(OUString const& rAltText)
+            : m_nDest( -1 ),
+              m_nStructParent( -1 )
+            , m_AltText(rAltText)
+    {}
+};
+
+/// A PDF embedded file.
+struct PDFEmbeddedFile
+{
+    /// ID of the file.
+    sal_Int32 m_nObject;
+    /// Contents of the file.
+    BinaryDataContainer m_aDataContainer;
+
+    PDFEmbeddedFile()
+        : m_nObject(0)
+    {
+    }
+};
+
+struct PDFPopupAnnotation : public PDFAnnotation
+{
+    /// ID of the parent object.
+    sal_Int32 m_nParentObject;
+};
+
+struct PDFNoteEntry : public PDFAnnotation
+{
+    PDFNote m_aContents;
+
+    PDFPopupAnnotation m_aPopUpAnnotation;
+
+    PDFNoteEntry()
+    {}
+};
+
+/// A PDF Screen annotation.
+struct PDFScreen : public PDFAnnotation
+{
+    /// Linked video.
+    OUString m_aURL;
+    /// Embedded video.
+    OUString m_aTempFileURL;
+    /// ID of the EmbeddedFile object.
+    sal_Int32 m_nTempFileObject;
+
+    PDFScreen()
+        : m_nTempFileObject(0)
+    {
+    }
+};
+
+struct PDFWidget : public PDFAnnotation
+{
+    PDFWriter::WidgetType       m_eType;
+    OString                m_aName;
+    OUString               m_aDescription;
+    OUString               m_aText;
+    DrawTextFlags          m_nTextStyle;
+    OUString               m_aValue;
+    OString                m_aDAString;
+    OString                m_aDRDict;
+    OString                m_aMKDict;
+    OString                m_aMKDictCAString;  // i12626, added to be able to encrypt the /CA text string
+                                                    // since the object number is not known at the moment
+                                                    // of filling m_aMKDict, the string will be encrypted when emitted.
+                                                    // the /CA string MUST BE the last added to m_aMKDict
+                                                    // see code for details
+    sal_Int32                   m_nFlags;
+    sal_Int32                   m_nParent; // if not 0, parent's object number
+    std::vector<sal_Int32>      m_aKids; // widget children, contains object numbers
+    std::vector<sal_Int32>      m_aKidsIndex; // widget children, contains index to m_aWidgets
+    OUString                    m_aOnValue;
+    OUString                    m_aOffValue;
+    sal_Int32                   m_nTabOrder; // lowest number gets first in tab order
+    sal_Int32                   m_nRadioGroup;
+    sal_Int32                   m_nMaxLen;
+    PDFWriter::FormatType       m_nFormat;
+    OUString                    m_aCurrencySymbol;
+    sal_Int32                   m_nDecimalAccuracy;
+    bool                        m_bPrependCurrencySymbol;
+    OUString                    m_aTimeFormat;
+    OUString                    m_aDateFormat;
+    bool                        m_bSubmit;
+    bool                        m_bSubmitGet;
+    sal_Int32                   m_nDest;
+    std::vector<OUString>  m_aListEntries;
+    std::vector<sal_Int32>      m_aSelectedEntries;
+    typedef std::unordered_map<OString, SvMemoryStream*> PDFAppearanceStreams;
+    std::unordered_map<OString, PDFAppearanceStreams> m_aAppearances;
+    PDFWidget()
+            : m_eType( PDFWriter::PushButton ),
+              m_nTextStyle( DrawTextFlags::NONE ),
+              m_nFlags( 0 ),
+              m_nParent( 0 ),
+              m_nTabOrder( 0 ),
+              m_nRadioGroup( -1 ),
+              m_nMaxLen( 0 ),
+              m_nFormat( PDFWriter::FormatType::Text ),
+              m_nDecimalAccuracy ( 0 ),
+              m_bPrependCurrencySymbol( false ),
+              m_bSubmit( false ),
+              m_bSubmitGet( false ),
+              m_nDest( -1 )
+    {}
+};
+
+struct PDFStructureAttribute
+{
+    PDFWriter::StructAttributeValue     eValue;
+    sal_Int32                           nValue;
+
+    PDFStructureAttribute()
+            : eValue( PDFWriter::Invalid ),
+              nValue( 0 )
+    {}
+
+    explicit PDFStructureAttribute( PDFWriter::StructAttributeValue eVal )
+            : eValue( eVal ),
+              nValue( 0 )
+    {}
+
+    explicit PDFStructureAttribute( sal_Int32 nVal )
+            : eValue( PDFWriter::Invalid ),
+              nValue( nVal )
+    {}
+};
+
+struct PDFStructureElementKid // for Kids entries
+{
+    sal_Int32 const nObject;  // an object number if nMCID is -1,
+                        // else the page object relevant to MCID
+    sal_Int32 const nMCID;    // an MCID if >= 0
+
+    explicit PDFStructureElementKid( sal_Int32 nObj ) : nObject( nObj ), nMCID( -1 ) {}
+    PDFStructureElementKid( sal_Int32 MCID, sal_Int32 nPage ) : nObject( nPage ), nMCID( MCID ) {}
+};
+
+struct PDFStructureElement
+{
+    sal_Int32                                           m_nObject;
+    PDFWriter::StructElement                            m_eType;
+    OString                                        m_aAlias;
+    sal_Int32                                           m_nOwnElement; // index into structure vector
+    sal_Int32                                           m_nParentElement; // index into structure vector
+    sal_Int32                                           m_nFirstPageObject;
+    bool                                                m_bOpenMCSeq;
+    std::list< sal_Int32 >                              m_aChildren; // indexes into structure vector
+    std::list< PDFStructureElementKid >                 m_aKids;
+    std::map<PDFWriter::StructAttribute, PDFStructureAttribute >
+                                                        m_aAttributes;
+    tools::Rectangle                                    m_aBBox;
+    OUString                                            m_aActualText;
+    OUString                                            m_aAltText;
+    css::lang::Locale                                   m_aLocale;
+
+    // m_aContents contains the element's marked content sequence
+    // as pairs of (page nr, MCID)
+
+    PDFStructureElement()
+            : m_nObject( 0 ),
+              m_eType( PDFWriter::NonStructElement ),
+              m_nOwnElement( -1 ),
+              m_nParentElement( -1 ),
+              m_nFirstPageObject( 0 ),
+              m_bOpenMCSeq( false )
+    {
+    }
+
+};
+
+struct PDFAddStream
+{
+    OUString           m_aMimeType;
+    PDFOutputStream*        m_pStream;
+    sal_Int32               m_nStreamObject;
+    bool                    m_bCompress;
+
+    PDFAddStream() : m_pStream( nullptr ), m_nStreamObject( 0 ), m_bCompress( true ) {}
+};
+
+// helper structure for drawLayout and friends
+struct PDFGlyph
+{
+    Point const       m_aPos;
+    const GlyphItem* m_pGlyph;
+    sal_Int32 const   m_nNativeWidth;
+    sal_Int32 const   m_nMappedFontId;
+    sal_uInt8 const   m_nMappedGlyphId;
+    int const         m_nCharPos;
+
+    PDFGlyph( const Point& rPos,
+              const GlyphItem* pGlyph,
+              sal_Int32 nNativeWidth,
+              sal_Int32 nFontId,
+              sal_uInt8 nMappedGlyphId,
+              int nCharPos )
+    : m_aPos( rPos ), m_pGlyph(pGlyph), m_nNativeWidth( nNativeWidth ),
+      m_nMappedFontId( nFontId ), m_nMappedGlyphId( nMappedGlyphId ),
+      m_nCharPos(nCharPos)
+    {}
+};
+
+struct StreamRedirect
+{
+    SvStream*       m_pStream;
+    MapMode         m_aMapMode;
+    tools::Rectangle       m_aTargetRect;
+    ResourceDict    m_aResourceDict;
+};
+
+// graphics state
+struct GraphicsState
+{
+    vcl::Font                        m_aFont;
+    MapMode                          m_aMapMode;
+    Color                            m_aLineColor;
+    Color                            m_aFillColor;
+    Color                            m_aTextLineColor;
+    Color                            m_aOverlineColor;
+    basegfx::B2DPolyPolygon          m_aClipRegion;
+    bool                             m_bClipRegion;
+    vcl::text::ComplexTextLayoutFlags m_nLayoutMode;
+    LanguageType                     m_aDigitLanguage;
+    PushFlags                        m_nFlags;
+    GraphicsStateUpdateFlags         m_nUpdateFlags;
+
+    GraphicsState() :
+            m_aLineColor( COL_TRANSPARENT ),
+            m_aFillColor( COL_TRANSPARENT ),
+            m_aTextLineColor( COL_TRANSPARENT ),
+            m_aOverlineColor( COL_TRANSPARENT ),
+            m_bClipRegion( false ),
+            m_nLayoutMode( vcl::text::ComplexTextLayoutFlags::Default ),
+            m_aDigitLanguage( 0 ),
+            m_nFlags( PushFlags::ALL ),
+            m_nUpdateFlags( GraphicsStateUpdateFlags::All )
+    {}
+};
+
+enum class Mode { DEFAULT, NOWRITE };
+
+}
+
+class PDFWriterImpl final : public VirtualDevice, public PDFObjectContainer
+{
+    friend class PDFStreamIf;
+
+public:
+    friend struct vcl::pdf::PDFPage;
+
+    static const char* getStructureTag( PDFWriter::StructElement );
+    static const char* getAttributeTag( PDFWriter::StructAttribute eAtr );
+    static const char* getAttributeValueTag( PDFWriter::StructAttributeValue eVal );
+
+    // returns true if compression was done
+    // else false
+    static bool compressStream( SvMemoryStream* );
+
+    static void convertLineInfoToExtLineInfo( const LineInfo& rIn, PDFWriter::ExtLineInfo& rOut );
+
+private:
+    bool ImplNewFont() const override;
+    void ImplClearFontData(bool bNewFontLists) override;
+    void ImplRefreshFontData(bool bNewFontLists) override;
+    vcl::Region ClipToDeviceBounds(vcl::Region aRegion) const override;
+    void DrawHatchLine_DrawLine(const Point& rStartPoint, const Point& rEndPoint) override;
+
+    MapMode                             m_aMapMode; // PDFWriterImpl scaled units
+    StyleSettings                       m_aWidgetStyleSettings;
+    std::vector< PDFPage >              m_aPages;
+    /* maps object numbers to file offsets (needed for xref) */
+    std::vector< sal_uInt64 >           m_aObjects;
+    /* contains Bitmaps until they are written to the
+     *  file stream as XObjects*/
+    std::list< BitmapEmit >             m_aBitmaps;
+    /* contains JPG streams until written to file     */
+    std::vector<JPGEmit>                m_aJPGs;
+    /*--->i56629 contains all named destinations ever set during the PDF creation,
+       destination id is always the destination's position in this vector
+     */
+    std::vector<PDFNamedDest>           m_aNamedDests;
+    /* contains all dests ever set during the PDF creation,
+       dest id is always the dest's position in this vector
+     */
+    std::vector<PDFDest>                m_aDests;
+    /** contains destinations accessible via a public Id, instead of being linked to by an ordinary link
+    */
+    ::std::map< sal_Int32, sal_Int32 >  m_aDestinationIdTranslation;
+    /* contains all links ever set during PDF creation,
+       link id is always the link's position in this vector
+    */
+    std::vector<PDFLink>                m_aLinks;
+    /// Contains all screen annotations.
+    std::vector<PDFScreen> m_aScreens;
+    /// Contains embedded files.
+    std::vector<PDFEmbeddedFile> m_aEmbeddedFiles;
+    /* makes correctly encoded for export to PDF URLS
+    */
+    css::uno::Reference< css::util::XURLTransformer > m_xTrans;
+    /* maps arbitrary link ids for structure attributes to real link ids
+       (for setLinkPropertyId)
+    */
+    std::map<sal_Int32, sal_Int32>      m_aLinkPropertyMap;
+    /* contains all outline items,
+       object 0 is the outline root
+     */
+    std::vector<PDFOutlineEntry>        m_aOutline;
+    /* contains all notes set during PDF creation
+     */
+    std::vector<PDFNoteEntry>           m_aNotes;
+    /* the root of the structure tree
+     */
+    std::vector<PDFStructureElement>    m_aStructure;
+    /* current object in the structure hierarchy
+     */
+    sal_Int32                           m_nCurrentStructElement;
+    /* structure parent tree */
+    std::vector< OString >         m_aStructParentTree;
+    /* emit structure marks currently (aka. NonStructElement or not)
+     */
+    bool                                m_bEmitStructure;
+    /* role map of struct tree root */
+    std::unordered_map< OString, OString >
+                                        m_aRoleMap;
+
+    /* contains all widgets used in the PDF
+     */
+    std::vector<PDFWidget>              m_aWidgets;
+    /* maps radio group id to index of radio group control in m_aWidgets */
+    std::map< sal_Int32, sal_Int32 >    m_aRadioGroupWidgets;
+    /* unordered_map for field names, used to ensure unique field names */
+    std::unordered_map< OString, sal_Int32 > m_aFieldNameMap;
+
+    /* contains Bitmaps for gradient functions until they are written
+     *  to the file stream */
+    std::list< GradientEmit >           m_aGradients;
+    /* contains bitmap tiling patterns */
+    std::vector< TilingEmit >           m_aTilings;
+    std::vector< TransparencyEmit >     m_aTransparentObjects;
+    /*  contains all font subsets in use */
+    std::map<const vcl::font::PhysicalFontFace*, FontSubset> m_aSubsets;
+    std::map<const vcl::font::PhysicalFontFace*, EmbedFont> m_aSystemFonts;
+    sal_Int32                           m_nNextFID;
+    PDFFontCache                        m_aFontCache;
+
+    /// Cache some most recent bitmaps we've exported, in case we encounter them again..
+    o3tl::lru_map<BitmapChecksum,
+                  std::shared_ptr<SvMemoryStream>> m_aPDFBmpCache;
+
+    sal_Int32                           m_nCurrentPage;
+
+    sal_Int32                           m_nCatalogObject;
+    // object number of the main signature dictionary
+    sal_Int32                           m_nSignatureObject;
+    sal_Int64                           m_nSignatureContentOffset;
+    sal_Int64                           m_nSignatureLastByteRangeNoOffset;
+    sal_Int32                           m_nResourceDict;
+    ResourceDict                        m_aGlobalResourceDict;
+    sal_Int32                           m_nFontDictObject;
+    std::map< sal_Int32, sal_Int32 >    m_aBuildinFontToObjectMap;
+
+    PDFWriter::PDFWriterContext         m_aContext;
+    osl::File                           m_aFile;
+    bool                                m_bOpen;
+
+    ExternalPDFStreams m_aExternalPDFStreams;
+
+    /* output redirection; e.g. to accumulate content streams for
+       XObjects
+     */
+    std::list< StreamRedirect >         m_aOutputStreams;
+
+    std::list< GraphicsState >              m_aGraphicsStack;
+    GraphicsState                           m_aCurrentPDFState;
+
+    std::unique_ptr<ZCodec>                 m_pCodec;
+    std::unique_ptr<SvMemoryStream>         m_pMemStream;
+
+    std::vector< PDFAddStream >             m_aAdditionalStreams;
+    std::set< PDFWriter::ErrorCode >        m_aErrors;
+
+    ::comphelper::Hash                      m_DocDigest;
+
+/*
+variables for PDF security
+i12626
+*/
+/* used to cipher the stream data and for password management */
+    rtlCipher                               m_aCipher;
+    /* pad string used for password in Standard security handler */
+    static const sal_uInt8                  s_nPadString[ENCRYPTED_PWD_SIZE];
+
+    /* the encryption key, formed with the user password according to algorithm 3.2, maximum length is 16 bytes + 3 + 2
+    for 128 bit security   */
+    sal_Int32                               m_nKeyLength; // key length, 16 or 5
+    sal_Int32                               m_nRC4KeyLength; // key length, 16 or 10, to be input to the algorithm 3.1
+
+    /* set to true if the following stream must be encrypted, used inside writeBuffer() */
+    bool                                    m_bEncryptThisStream;
+
+    /* the numerical value of the access permissions, according to PDF spec, must be signed */
+    sal_Int32                               m_nAccessPermissions;
+    /* string to hold the PDF creation date */
+    OString                            m_aCreationDateString;
+    /* string to hold the PDF creation date, for PDF/A metadata */
+    OString                            m_aCreationMetaDateString;
+    /* the buffer where the data are encrypted, dynamically allocated */
+    std::vector<sal_uInt8>                  m_vEncryptionBuffer;
+
+    void addRoleMap(OString aAlias, PDFWriter::StructElement eType);
+
+    /* this function implements part of the PDF spec algorithm 3.1 in encryption, the rest (the actual encryption) is in PDFWriterImpl::writeBuffer */
+    void checkAndEnableStreamEncryption( sal_Int32 nObject ) override;
+
+    void disableStreamEncryption() override { m_bEncryptThisStream = false; };
+
+    /* */
+    void enableStringEncryption( sal_Int32 nObject );
+
+// test if the encryption is active, if yes than encrypt the unicode string  and add to the OStringBuffer parameter
+    void appendUnicodeTextStringEncrypt( const OUString& rInString, const sal_Int32 nInObjectNumber, OStringBuffer& rOutBuffer );
+
+    void appendLiteralStringEncrypt( std::u16string_view rInString, const sal_Int32 nInObjectNumber, OStringBuffer& rOutBuffer, rtl_TextEncoding nEnc = RTL_TEXTENCODING_ASCII_US );
+    void appendLiteralStringEncrypt( std::string_view rInString, const sal_Int32 nInObjectNumber, OStringBuffer& rOutBuffer );
+
+    /* creates fonts and subsets that will be emitted later */
+    void registerGlyph(const GlyphItem* pGlyph, const vcl::font::PhysicalFontFace* pFont, const std::vector<sal_Ucs>& rCodeUnits, sal_Int32 nGlyphWidth, sal_uInt8& nMappedGlyph, sal_Int32& nMappedFontObject);
+
+    /*  emits a text object according to the passed layout */
+    /* TODO: remove rText as soon as SalLayout will change so that rText is not necessary anymore */
+    void drawVerticalGlyphs( const std::vector<PDFGlyph>& rGlyphs, OStringBuffer& rLine, const Point& rAlignOffset, const Matrix3& rRotScale, double fAngle, double fXScale, double fSkew, sal_Int32 nFontHeight );
+    void drawHorizontalGlyphs( const std::vector<PDFGlyph>& rGlyphs, OStringBuffer& rLine, const Point& rAlignOffset, bool bFirst, double fAngle, double fXScale, double fSkew, sal_Int32 nFontHeight, sal_Int32 nPixelFontHeight );
+    void drawLayout( SalLayout& rLayout, const OUString& rText, bool bTextLines );
+    void drawRelief( SalLayout& rLayout, const OUString& rText, bool bTextLines );
+    void drawShadow( SalLayout& rLayout, const OUString& rText, bool bTextLines );
+
+    /*  writes differences between graphics stack and current real PDF
+     *   state to the file
+     */
+    void updateGraphicsState(Mode mode = Mode::DEFAULT);
+
+    /* writes a transparency group object */
+    void writeTransparentObject( TransparencyEmit& rObject );
+
+    /* writes an XObject of type image, may create
+       a second for the mask
+     */
+    bool writeBitmapObject( const BitmapEmit& rObject, bool bMask = false );
+
+    void writeJPG( const JPGEmit& rEmit );
+    /// Writes the form XObject proxy for the image.
+    void writeReferenceXObject(const ReferenceXObjectEmit& rEmit);
+
+    /* tries to find the bitmap by its id and returns its emit data if exists,
+       else creates a new emit data block */
+    const BitmapEmit& createBitmapEmit( const BitmapEx& rBitmapEx, const Graphic& rGraphic );
+
+    /* writes the Do operation inside the content stream */
+    void drawBitmap( const Point& rDestPt, const Size& rDestSize, const BitmapEmit& rBitmap, const Color& rFillColor );
+    /* write the function object for a Gradient */
+    bool writeGradientFunction( GradientEmit const & rObject );
+    /* creates a GradientEmit and returns its object number */
+    sal_Int32 createGradient(  const Gradient& rGradient, const Size& rSize );
+
+    /* writes all tilings */
+    bool emitTilings();
+    /* writes all gradient patterns */
+    bool emitGradients();
+    /* writes a builtin font object and returns its objectid (or 0 in case of failure ) */
+    sal_Int32 emitBuildinFont( const pdf::BuildinFontFace*, sal_Int32 nObject );
+    /* writes a type1 system font object and returns its mapping from font ids to object ids (or 0 in case of failure ) */
+    std::map< sal_Int32, sal_Int32 > emitSystemFont(const vcl::font::PhysicalFontFace*, EmbedFont const &);
+    /* writes a font descriptor and returns its object id (or 0) */
+    sal_Int32 emitFontDescriptor(const vcl::font::PhysicalFontFace*, FontSubsetInfo const &, sal_Int32 nSubsetID, sal_Int32 nStream);
+    /* writes a ToUnicode cmap, returns the corresponding stream object */
+    sal_Int32 createToUnicodeCMap( sal_uInt8 const * pEncoding, const sal_Ucs* pCodeUnits, const sal_Int32* pCodeUnitsPerGlyph,
+                                   const sal_Int32* pEncToUnicodeIndex, int nGlyphs );
+
+    /* get resource dict object number */
+    sal_Int32 getResourceDictObj()
+    {
+        if( m_nResourceDict <= 0 )
+            m_nResourceDict = createObject();
+        return m_nResourceDict;
+    }
+    /* get the font dict object */
+    sal_Int32 getFontDictObject()
+    {
+        if( m_nFontDictObject <= 0 )
+            m_nFontDictObject = createObject();
+        return m_nFontDictObject;
+    }
+    /* push resource into current (redirected) resource dict */
+    void pushResource( ResourceKind eKind, const OString& rResource, sal_Int32 nObject );
+
+    void appendBuildinFontsToDict( OStringBuffer& rDict ) const;
+    /* writes the font dictionary and emits all font objects
+     * returns object id of font directory (or 0 on error)
+     */
+    bool emitFonts();
+    /* writes the Resource dictionary;
+     * returns dict object id (or 0 on error)
+     */
+    sal_Int32 emitResources();
+    // appends a dest
+    bool appendDest( sal_Int32 nDestID, OStringBuffer& rBuffer );
+    // write all links
+    bool emitLinkAnnotations();
+    // Write all screen annotations.
+    bool emitScreenAnnotations();
+
+    void emitTextAnnotationLine(OStringBuffer & aLine, PDFNoteEntry const & rNote);
+    static void emitPopupAnnotationLine(OStringBuffer & aLine, PDFPopupAnnotation const & rPopUp);
+    // write all notes
+    bool emitNoteAnnotations();
+
+    // write the appearance streams of a widget
+    bool emitAppearances( PDFWidget& rWidget, OStringBuffer& rAnnotDict );
+    // clean up radio button "On" values
+    void ensureUniqueRadioOnValues();
+    // write all widgets
+    bool emitWidgetAnnotations();
+    // writes all annotation objects
+    bool emitAnnotations();
+    /// Writes embedded files.
+    bool emitEmbeddedFiles();
+    //write the named destination stuff
+    sal_Int32 emitNamedDestinations();//i56629
+    // writes outline dict and tree
+    sal_Int32 emitOutline();
+    // puts the attribute objects of a structure element into the returned string,
+    // helper for emitStructure
+    OString emitStructureAttributes( PDFStructureElement& rEle );
+    //--->i94258
+    // the maximum array elements allowed for PDF array object
+    static const sal_uInt32 ncMaxPDFArraySize = 8191;
+    //check if internal dummy container are needed in the structure elements
+    void addInternalStructureContainer( PDFStructureElement& rEle );
+    //<---i94258
+    // writes document structure
+    sal_Int32 emitStructure( PDFStructureElement& rEle );
+    // writes structure parent tree
+    sal_Int32 emitStructParentTree( sal_Int32 nTreeObject );
+    // writes page tree and catalog
+    bool emitCatalog();
+    // writes signature dictionary object
+    bool emitSignature();
+    // creates a PKCS7 object using the ByteRange and overwrite /Contents
+    // of the signature dictionary
+    bool finalizeSignature();
+    // writes xref and trailer
+    bool emitTrailer();
+    // emit additional streams collected; also create there object numbers
+    bool emitAdditionalStreams();
+    // emits info dict (if applicable)
+    sal_Int32 emitInfoDict( );
+
+    // acrobat reader 5 and 6 use the order of the annotations
+    // as their tab order; since PDF1.5 one can make the
+    // tab order explicit by using the structure tree
+    void sortWidgets();
+
+    // updates the count numbers of outline items
+    sal_Int32 updateOutlineItemCount( std::vector< sal_Int32 >& rCounts,
+                                      sal_Int32 nItemLevel,
+                                      sal_Int32 nCurrentItemId );
+    // default appearances for widgets
+    sal_Int32 findRadioGroupWidget( const PDFWriter::RadioButtonWidget& rRadio );
+    Font replaceFont( const Font& rControlFont, const Font& rAppSetFont );
+    sal_Int32 getBestBuildinFont( const Font& rFont );
+    sal_Int32 getSystemFont( const Font& i_rFont );
+
+    // used for edit and listbox
+    Font drawFieldBorder( PDFWidget&, const PDFWriter::AnyWidget&, const StyleSettings& );
+
+    void createDefaultPushButtonAppearance( PDFWidget&, const PDFWriter::PushButtonWidget& rWidget );
+    void createDefaultCheckBoxAppearance( PDFWidget&, const PDFWriter::CheckBoxWidget& rWidget );
+    void createDefaultRadioButtonAppearance( PDFWidget&, const PDFWriter::RadioButtonWidget& rWidget );
+    void createDefaultEditAppearance( PDFWidget&, const PDFWriter::EditWidget& rWidget );
+    void createDefaultListBoxAppearance( PDFWidget&, const PDFWriter::ListBoxWidget& rWidget );
+
+    /* ensure proper escapement and uniqueness of field names */
+    void createWidgetFieldName( sal_Int32 i_nWidgetsIndex, const PDFWriter::AnyWidget& i_rInWidget );
+    /// See vcl::PDFObjectContainer::createObject().
+    sal_Int32 createObject() override;
+    /// See vcl::PDFObjectContainer::updateObject().
+    bool updateObject( sal_Int32 n ) override;
+
+    /// See vcl::PDFObjectContainer::writeBuffer().
+    bool writeBuffer( const void* pBuffer, sal_uInt64 nBytes ) override;
+    void beginCompression();
+    void endCompression();
+    void beginRedirect( SvStream* pStream, const tools::Rectangle& );
+    SvStream* endRedirect();
+
+    void endPage();
+
+    void beginStructureElementMCSeq();
+    void endStructureElementMCSeq();
+    /** checks whether a non struct element lies in the ancestor hierarchy
+        of the current structure element
+
+        @returns
+        true if no NonStructElement was found in ancestor path and tagged
+        PDF output is enabled
+        false else
+     */
+    bool checkEmitStructure();
+
+    /* draws an emphasis mark */
+    void drawEmphasisMark(  tools::Long nX, tools::Long nY, const tools::PolyPolygon& rPolyPoly, bool bPolyLine, const tools::Rectangle& rRect1, const tools::Rectangle& rRect2 );
+
+    /* true if PDF/A-1a or PDF/A-1b is output */
+    bool            m_bIsPDF_A1;
+    /* true if PDF/A-2a is output */
+    bool            m_bIsPDF_A2;
+
+    /* PDF/UA support enabled */
+    bool m_bIsPDF_UA;
+
+    bool            m_bIsPDF_A3;
+
+    PDFWriter&      m_rOuterFace;
+
+    /*
+    i12626
+    methods for PDF security
+
+    pad a password according  algorithm 3.2, step 1 */
+    static void padPassword( std::u16string_view i_rPassword, sal_uInt8* o_pPaddedPW );
+    /* algorithm 3.2: compute an encryption key */
+    static bool computeEncryptionKey( EncHashTransporter*,
+                                      vcl::PDFWriter::PDFEncryptionProperties& io_rProperties,
+                                      sal_Int32 i_nAccessPermissions
+                                     );
+    /* algorithm 3.3: computing the encryption dictionary'ss owner password value ( /O ) */
+    static bool computeODictionaryValue( const sal_uInt8* i_pPaddedOwnerPassword, const sal_uInt8* i_pPaddedUserPassword,
+                                         std::vector< sal_uInt8 >& io_rOValue,
+                                         sal_Int32 i_nKeyLength
+                                        );
+    /* algorithm 3.4 or 3.5: computing the encryption dictionary's user password value ( /U ) revision 2 or 3 of the standard security handler */
+    static bool computeUDictionaryValue( EncHashTransporter* i_pTransporter,
+                                         vcl::PDFWriter::PDFEncryptionProperties& io_rProperties,
+                                         sal_Int32 i_nKeyLength,
+                                         sal_Int32 i_nAccessPermissions
+                                        );
+
+    static void computeDocumentIdentifier( std::vector< sal_uInt8 >& o_rIdentifier,
+                                           const vcl::PDFWriter::PDFDocInfo& i_rDocInfo,
+                                           const OString& i_rCString1,
+                                           OString& o_rCString2
+                                          );
+    static sal_Int32 computeAccessPermissions( const vcl::PDFWriter::PDFEncryptionProperties& i_rProperties,
+                                               sal_Int32& o_rKeyLength, sal_Int32& o_rRC4KeyLength );
+    void setupDocInfo();
+    bool prepareEncryption( const css::uno::Reference< css::beans::XMaterialHolder >& );
+
+    // helper for playMetafile
+    void implWriteGradient( const tools::PolyPolygon& rPolyPoly, const Gradient& rGradient,
+                            VirtualDevice* pDummyVDev, const vcl::PDFWriter::PlayMetafileContext& );
+    void implWriteBitmapEx( const Point& rPoint, const Size& rSize, const BitmapEx& rBitmapEx, const Graphic& i_pGraphic,
+                           VirtualDevice const * pDummyVDev, const vcl::PDFWriter::PlayMetafileContext& );
+
+    // helpers for CCITT 1bit bitmap stream
+    void putG4Bits( sal_uInt32 i_nLength, sal_uInt32 i_nCode, BitStreamState& io_rState );
+    void putG4Span( tools::Long i_nSpan, bool i_bWhitePixel, BitStreamState& io_rState );
+    void writeG4Stream( BitmapReadAccess const * i_pBitmap );
+
+    // color helper functions
+    void appendStrokingColor( const Color& rColor, OStringBuffer& rBuffer );
+    void appendNonStrokingColor( const Color& rColor, OStringBuffer& rBuffer );
+public:
+    PDFWriterImpl( const PDFWriter::PDFWriterContext& rContext, const css::uno::Reference< css::beans::XMaterialHolder >&, PDFWriter& );
+    ~PDFWriterImpl() override;
+    void dispose() override;
+
+    static css::uno::Reference< css::beans::XMaterialHolder >
+           initEncryption( const OUString& i_rOwnerPassword,
+                           const OUString& i_rUserPassword );
+
+    /* document structure */
+    void newPage( double nPageWidth , double nPageHeight, PDFWriter::Orientation eOrientation );
+    bool emit();
+    const std::set< PDFWriter::ErrorCode > & getErrors() const { return m_aErrors;}
+    void insertError( PDFWriter::ErrorCode eErr ) { m_aErrors.insert( eErr ); }
+    void playMetafile( const GDIMetaFile&, vcl::PDFExtOutDevData*, const vcl::PDFWriter::PlayMetafileContext&, VirtualDevice* pDummyDev = nullptr );
+
+    Size getCurPageSize() const
+    {
+        Size aSize;
+        if( m_nCurrentPage >= 0 && o3tl::make_unsigned(m_nCurrentPage) < m_aPages.size() )
+            aSize = Size( m_aPages[ m_nCurrentPage ].m_nPageWidth, m_aPages[ m_nCurrentPage ].m_nPageHeight );
+        return aSize;
+    }
+
+    void setDocumentLocale( const css::lang::Locale& rLoc )
+    { m_aContext.DocumentLocale = rLoc; }
+
+    /* graphics state */
+    void push( PushFlags nFlags );
+    void pop();
+
+    void setFont( const Font& rFont );
+
+    void setMapMode( const MapMode& rMapMode );
+
+    const MapMode& getMapMode() { return m_aGraphicsStack.front().m_aMapMode; }
+
+    void setLineColor( const Color& rColor )
+    {
+        m_aGraphicsStack.front().m_aLineColor = rColor.IsTransparent() ? COL_TRANSPARENT : rColor;
+        m_aGraphicsStack.front().m_nUpdateFlags |= GraphicsStateUpdateFlags::LineColor;
+    }
+
+    void setFillColor( const Color& rColor )
+    {
+        m_aGraphicsStack.front().m_aFillColor = rColor.IsTransparent() ? COL_TRANSPARENT : rColor;
+        m_aGraphicsStack.front().m_nUpdateFlags |= GraphicsStateUpdateFlags::FillColor;
+    }
+
+    void setTextLineColor()
+    {
+        m_aGraphicsStack.front().m_aTextLineColor = COL_TRANSPARENT;
+    }
+
+    void setTextLineColor( const Color& rColor )
+    {
+        m_aGraphicsStack.front().m_aTextLineColor = rColor;
+    }
+
+    void setOverlineColor()
+    {
+        m_aGraphicsStack.front().m_aOverlineColor = COL_TRANSPARENT;
+    }
+
+    void setOverlineColor( const Color& rColor )
+    {
+        m_aGraphicsStack.front().m_aOverlineColor = rColor;
+    }
+
+    void setTextFillColor( const Color& rColor )
+    {
+        m_aGraphicsStack.front().m_aFont.SetFillColor( rColor );
+        m_aGraphicsStack.front().m_aFont.SetTransparent( rColor.IsTransparent() );
+        m_aGraphicsStack.front().m_nUpdateFlags |= GraphicsStateUpdateFlags::Font;
+    }
+    void setTextFillColor()
+    {
+        m_aGraphicsStack.front().m_aFont.SetFillColor( COL_TRANSPARENT );
+        m_aGraphicsStack.front().m_aFont.SetTransparent( true );
+        m_aGraphicsStack.front().m_nUpdateFlags |= GraphicsStateUpdateFlags::Font;
+    }
+    void setTextColor( const Color& rColor )
+    {
+        m_aGraphicsStack.front().m_aFont.SetColor( rColor );
+        m_aGraphicsStack.front().m_nUpdateFlags |= GraphicsStateUpdateFlags::Font;
+    }
+
+    void clearClipRegion()
+    {
+        m_aGraphicsStack.front().m_aClipRegion.clear();
+        m_aGraphicsStack.front().m_bClipRegion = false;
+        m_aGraphicsStack.front().m_nUpdateFlags |= GraphicsStateUpdateFlags::ClipRegion;
+    }
+
+    void setClipRegion( const basegfx::B2DPolyPolygon& rRegion );
+
+    void moveClipRegion( sal_Int32 nX, sal_Int32 nY );
+
+    void intersectClipRegion( const tools::Rectangle& rRect );
+
+    void intersectClipRegion( const basegfx::B2DPolyPolygon& rRegion );
+
+    void setLayoutMode( vcl::text::ComplexTextLayoutFlags nLayoutMode )
+    {
+        m_aGraphicsStack.front().m_nLayoutMode = nLayoutMode;
+        m_aGraphicsStack.front().m_nUpdateFlags |= GraphicsStateUpdateFlags::LayoutMode;
+    }
+
+    void setDigitLanguage( LanguageType eLang )
+    {
+        m_aGraphicsStack.front().m_aDigitLanguage = eLang;
+        m_aGraphicsStack.front().m_nUpdateFlags |= GraphicsStateUpdateFlags::DigitLanguage;
+    }
+
+    void setTextAlign( TextAlign eAlign )
+    {
+        m_aGraphicsStack.front().m_aFont.SetAlignment( eAlign );
+        m_aGraphicsStack.front().m_nUpdateFlags |= GraphicsStateUpdateFlags::Font;
+    }
+
+    /* actual drawing functions */
+    void drawText( const Point& rPos, const OUString& rText, sal_Int32 nIndex, sal_Int32 nLen, bool bTextLines = true );
+    void drawTextArray( const Point& rPos, const OUString& rText, o3tl::span<const sal_Int32> pDXArray, sal_Int32 nIndex, sal_Int32 nLen );
+    void drawStretchText( const Point& rPos, sal_uLong nWidth, const OUString& rText,
+                          sal_Int32 nIndex, sal_Int32 nLen  );
+    void drawText( const tools::Rectangle& rRect, const OUString& rOrigStr, DrawTextFlags nStyle );
+    void drawTextLine( const Point& rPos, tools::Long nWidth, FontStrikeout eStrikeout, FontLineStyle eUnderline, FontLineStyle eOverline, bool bUnderlineAbove );
+    void drawWaveTextLine( OStringBuffer& aLine, tools::Long nWidth, FontLineStyle eTextLine, Color aColor, bool bIsAbove );
+    void drawStraightTextLine( OStringBuffer& aLine, tools::Long nWidth, FontLineStyle eTextLine, Color aColor, bool bIsAbove );
+    void drawStrikeoutLine( OStringBuffer& aLine, tools::Long nWidth, FontStrikeout eStrikeout, Color aColor );
+    void drawStrikeoutChar( const Point& rPos, tools::Long nWidth, FontStrikeout eStrikeout );
+
+    void drawLine( const Point& rStart, const Point& rStop );
+    void drawLine( const Point& rStart, const Point& rStop, const LineInfo& rInfo );
+    void drawPolygon( const tools::Polygon& rPoly );
+    void drawPolyPolygon( const tools::PolyPolygon& rPolyPoly );
+    void drawPolyLine( const tools::Polygon& rPoly );
+    void drawPolyLine( const tools::Polygon& rPoly, const LineInfo& rInfo );
+    void drawPolyLine( const tools::Polygon& rPoly, const PDFWriter::ExtLineInfo& rInfo );
+
+    void drawPixel( const Point& rPt, const Color& rColor );
+
+    void drawRectangle( const tools::Rectangle& rRect );
+    void drawRectangle( const tools::Rectangle& rRect, sal_uInt32 nHorzRound, sal_uInt32 nVertRound );
+    void drawEllipse( const tools::Rectangle& rRect );
+    void drawArc( const tools::Rectangle& rRect, const Point& rStart, const Point& rStop, bool bWithPie, bool bWidthChord );
+
+    void drawBitmap( const Point& rDestPoint, const Size& rDestSize, const Bitmap& rBitmap, const Graphic& rGraphic );
+    void drawBitmap( const Point& rDestPoint, const Size& rDestSize, const BitmapEx& rBitmap );
+    void drawJPGBitmap( SvStream& rDCTData, bool bIsTrueColor, const Size& rSizePixel, const tools::Rectangle& rTargetArea, const AlphaMask& rAlphaMask, const Graphic& rGraphic );
+    /// Stores the original PDF data from rGraphic as an embedded file.
+    void createEmbeddedFile(const Graphic& rGraphic, ReferenceXObjectEmit& rEmit, sal_Int32 nBitmapObject);
+
+    void drawGradient( const tools::Rectangle& rRect, const Gradient& rGradient );
+    void drawHatch( const tools::PolyPolygon& rPolyPoly, const Hatch& rHatch );
+    void drawWallpaper( const tools::Rectangle& rRect, const Wallpaper& rWall );
+    void drawTransparent( const tools::PolyPolygon& rPolyPoly, sal_uInt32 nTransparentPercent );
+    void beginTransparencyGroup();
+    void endTransparencyGroup( const tools::Rectangle& rBoundingBox, sal_uInt32 nTransparentPercent );
+
+    void emitComment( const char* pComment );
+
+    //--->i56629 named destinations
+    sal_Int32 createNamedDest( const OUString& sDestName, const tools::Rectangle& rRect, sal_Int32 nPageNr, PDFWriter::DestAreaType eType );
+
+    //--->i59651
+    //emits output intent
+    sal_Int32   emitOutputIntent();
+
+    //emits the document metadata
+    sal_Int32   emitDocumentMetadata();
+
+    // links
+    sal_Int32 createLink(const tools::Rectangle& rRect, sal_Int32 nPageNr, OUString const& rAltText);
+    sal_Int32 createDest( const tools::Rectangle& rRect, sal_Int32 nPageNr, PDFWriter::DestAreaType eType );
+    sal_Int32 registerDestReference( sal_Int32 nDestId, const tools::Rectangle& rRect, sal_Int32 nPageNr, PDFWriter::DestAreaType eType );
+    void      setLinkDest( sal_Int32 nLinkId, sal_Int32 nDestId );
+    void      setLinkURL( sal_Int32 nLinkId, const OUString& rURL );
+    void      setLinkPropertyId( sal_Int32 nLinkId, sal_Int32 nPropertyId );
+
+    // screens
+    sal_Int32 createScreen(const tools::Rectangle& rRect, sal_Int32 nPageNr);
+    void setScreenURL(sal_Int32 nScreenId, const OUString& rURL);
+    void setScreenStream(sal_Int32 nScreenId, const OUString& rURL);
+
+    // outline
+    sal_Int32 createOutlineItem( sal_Int32 nParent, std::u16string_view rText, sal_Int32 nDestID );
+    void      setOutlineItemParent( sal_Int32 nItem, sal_Int32 nNewParent );
+    void      setOutlineItemText( sal_Int32 nItem, std::u16string_view rText );
+    void      setOutlineItemDest( sal_Int32 nItem, sal_Int32 nDestID );
+
+    // notes
+    void createNote( const tools::Rectangle& rRect, const PDFNote& rNote, sal_Int32 nPageNr );
+    // structure elements
+    sal_Int32 beginStructureElement( PDFWriter::StructElement eType, const OUString& rAlias );
+    void endStructureElement();
+    bool setCurrentStructureElement( sal_Int32 nElement );
+    bool setStructureAttribute( enum PDFWriter::StructAttribute eAttr, enum PDFWriter::StructAttributeValue eVal );
+    bool setStructureAttributeNumerical( enum PDFWriter::StructAttribute eAttr, sal_Int32 nValue );
+    void setStructureBoundingBox( const tools::Rectangle& rRect );
+    void setActualText( const OUString& rText );
+    void setAlternateText( const OUString& rText );
+
+    // transitional effects
+    void setPageTransition( PDFWriter::PageTransition eType, sal_uInt32 nMilliSec, sal_Int32 nPageNr );
+
+    // controls
+    sal_Int32 createControl( const PDFWriter::AnyWidget& rControl, sal_Int32 nPageNr = -1 );
+
+    // additional streams
+    void addStream( const OUString& rMimeType, PDFOutputStream* pStream );
+
+    // helper: eventually begin marked content sequence and
+    // emit a comment in debug case
+    void MARK( const char* pString );
+};
+
+} // namespace vcl
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */