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diff --git a/sd/inc/Annotation.hxx b/sd/inc/Annotation.hxx
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+++ b/sd/inc/Annotation.hxx
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+/* -*- 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 <sal/types.h>
+#include <memory>
+
+#include <com/sun/star/office/XAnnotation.hpp>
+#include <cppuhelper/basemutex.hxx>
+#include <cppuhelper/compbase.hxx>
+#include <cppuhelper/propertysetmixin.hxx>
+
+#include "sdpage.hxx"
+#include "textapi.hxx"
+#include "sddllapi.h"
+
+#include <basegfx/polygon/b2dpolygon.hxx>
+#include <tools/color.hxx>
+
+class SdrUndoAction;
+
+namespace com::sun::star::office {
+    class XAnnotation;
+}
+
+namespace com::sun::star::uno { template <typename > class Reference; }
+
+class SfxViewShell;
+
+namespace sd {
+
+enum class CommentNotificationType { Add, Modify, Remove };
+
+void createAnnotation( css::uno::Reference< css::office::XAnnotation >& xAnnotation, SdPage* pPage );
+
+std::unique_ptr<SdrUndoAction> CreateUndoInsertOrRemoveAnnotation( const css::uno::Reference< css::office::XAnnotation >& xAnnotation, bool bInsert );
+
+void CreateChangeUndo(const css::uno::Reference< css::office::XAnnotation >& xAnnotation);
+
+sal_uInt32 getAnnotationId(const css::uno::Reference <css::office::XAnnotation>& xAnnotation);
+
+const SdPage* getAnnotationPage(const css::uno::Reference<css::office::XAnnotation>& xAnnotation);
+
+void LOKCommentNotify(CommentNotificationType nType, const SfxViewShell* pViewShell,
+        css::uno::Reference<css::office::XAnnotation> const & rxAnnotation);
+
+void LOKCommentNotifyAll(CommentNotificationType nType,
+        css::uno::Reference<css::office::XAnnotation> const & rxAnnotation);
+
+struct SD_DLLPUBLIC CustomAnnotationMarker
+{
+    Color maLineColor;
+    Color maFillColor;
+    float mnLineWidth;
+    std::vector<basegfx::B2DPolygon> maPolygons;
+};
+
+class Annotation final : private ::cppu::BaseMutex,
+                   public ::cppu::WeakComponentImplHelper<css::office::XAnnotation>,
+                   public ::cppu::PropertySetMixin<css::office::XAnnotation>
+{
+public:
+    explicit Annotation( const css::uno::Reference<css::uno::XComponentContext>& context, SdPage* pPage );
+    Annotation(const Annotation&) = delete;
+    Annotation& operator=(const Annotation&) = delete;
+
+    static sal_uInt32 m_nLastId;
+
+    SdPage* GetPage() const { return mpPage; }
+    SdrModel* GetModel() { return (mpPage != nullptr) ? &mpPage->getSdrModelFromSdrPage() : nullptr; }
+    sal_uInt32 GetId() const { return m_nId; }
+
+    // XInterface:
+    virtual css::uno::Any SAL_CALL queryInterface(css::uno::Type const & type) override;
+    virtual void SAL_CALL acquire() noexcept override { ::cppu::WeakComponentImplHelper<css::office::XAnnotation>::acquire(); }
+    virtual void SAL_CALL release() noexcept override { ::cppu::WeakComponentImplHelper<css::office::XAnnotation>::release(); }
+
+    // css::beans::XPropertySet:
+    virtual css::uno::Reference<css::beans::XPropertySetInfo> SAL_CALL getPropertySetInfo() override;
+    virtual void SAL_CALL setPropertyValue(const OUString & aPropertyName, const css::uno::Any & aValue) override;
+    virtual css::uno::Any SAL_CALL getPropertyValue(const OUString & PropertyName) override;
+    virtual void SAL_CALL addPropertyChangeListener(const OUString & aPropertyName, const css::uno::Reference<css::beans::XPropertyChangeListener> & xListener) override;
+    virtual void SAL_CALL removePropertyChangeListener(const OUString & aPropertyName, const css::uno::Reference<css::beans::XPropertyChangeListener> & aListener) override;
+    virtual void SAL_CALL addVetoableChangeListener(const OUString & PropertyName, const css::uno::Reference<css::beans::XVetoableChangeListener> & aListener) override;
+    virtual void SAL_CALL removeVetoableChangeListener(const OUString & PropertyName, const css::uno::Reference<css::beans::XVetoableChangeListener> & aListener) override;
+
+    // css::office::XAnnotation:
+    virtual css::uno::Any SAL_CALL getAnchor() override;
+    virtual css::geometry::RealPoint2D SAL_CALL getPosition() override;
+    virtual void SAL_CALL setPosition(const css::geometry::RealPoint2D & the_value) override;
+    virtual css::geometry::RealSize2D SAL_CALL getSize() override;
+    virtual void SAL_CALL setSize(const css::geometry::RealSize2D& _size) override;
+    virtual OUString SAL_CALL getAuthor() override;
+    virtual void SAL_CALL setAuthor(const OUString & the_value) override;
+    virtual OUString SAL_CALL getInitials() override;
+    virtual void SAL_CALL setInitials(const OUString & the_value) override;
+    virtual css::util::DateTime SAL_CALL getDateTime() override;
+    virtual void SAL_CALL setDateTime(const css::util::DateTime & the_value) override;
+    virtual css::uno::Reference<css::text::XText> SAL_CALL getTextRange() override;
+
+    void createChangeUndo();
+
+    void createCustomAnnotationMarker()
+    {
+        m_pCustomAnnotationMarker = std::make_unique<CustomAnnotationMarker>();
+    }
+
+    CustomAnnotationMarker& getCustomAnnotationMarker()
+    {
+        return *m_pCustomAnnotationMarker;
+    }
+
+    bool hasCustomAnnotationMarker() const
+    {
+        return bool(m_pCustomAnnotationMarker);
+    }
+
+private:
+    // destructor is private and will be called indirectly by the release call    virtual ~Annotation() {}
+
+    // override WeakComponentImplHelperBase::disposing()
+    // This function is called upon disposing the component,
+    // if your component needs special work when it becomes
+    // disposed, do it here.
+    virtual void SAL_CALL disposing() override;
+
+    sal_uInt32 m_nId;
+    SdPage* mpPage;
+    css::geometry::RealPoint2D m_Position;
+    css::geometry::RealSize2D m_Size;
+    OUString m_Author;
+    OUString m_Initials;
+    css::util::DateTime m_DateTime;
+    rtl::Reference<TextApiObject> m_TextRange;
+
+    std::unique_ptr<CustomAnnotationMarker> m_pCustomAnnotationMarker;
+};
+
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */