2 files changed, 392 insertions, 0 deletions
diff --git a/include/svx/diagram/IDiagramHelper.hxx b/include/svx/diagram/IDiagramHelper.hxx
new file mode 100644
index 000000000..e93056f70
--- /dev/null
+++ b/include/svx/diagram/IDiagramHelper.hxx
@@ -0,0 +1,118 @@
+/* -*- 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 <vector>
+#include <svx/svxdllapi.h>
+#include <rtl/ustring.hxx>
+#include <svx/svdhdl.hxx>
+
+// Forward declarations
+class SdrObjGroup;
+class SdrHdlList;
+
+namespace svx { namespace diagram {
+
+// Helper class to visualize an imminently recognizable
+// additional visualization for DynamicDiagrams that can also
+// be used to show/hide the DiagramDialog by the user
+// Note: is also used as additional drag/move handle
+class SVXCORE_DLLPUBLIC DiagramFrameHdl final : public SdrHdl
+{
+    // object dimensions
+    basegfx::B2DHomMatrix maTransformation;
+
+    // create marker for this kind
+    virtual void CreateB2dIAObject() override;
+
+public:
+    DiagramFrameHdl(const basegfx::B2DHomMatrix& rTransformation);
+
+    static void clicked(const Point& rPnt);
+};
+
+class DiagramDataState;
+
+// Helper class to allow administer advanced Diagram related
+// data and functionality
+class SVXCORE_DLLPUBLIC IDiagramHelper
+{
+private:
+    // These values define behaviour to where take data from at re-creation time.
+    // Different definitions will have different consequences for re-creation
+    // of Diagram visualization (if needed/triggered).
+    // The style attributes per shape e.g. can be re-stored frm either an
+    // existing Theme, or the preserved key/value list of properties per XShape.
+    // With the current default settings the re-creation uses the preserved
+    // key/value pairs, but re-creation from Theme may also be desirable. It
+    // is also good to preserve both data packages at initial import to allow
+    // alternatively one of these two methods for re-construction
+
+    // If true, the oox::Theme data from ::DiagramData get/set/ThemeDocument()
+    // aka mxThemeDocument - if it exists - will be used to create the style
+    // attributes for the to-be-created XShapes (theoretically allows re-creation
+    // with other Theme)
+    bool mbUseDiagramThemeData; // false
+
+    // If true, the UNO API form of attributes per Point as Key/value list
+    // that was secured after initial XShape creation is used to create the
+    // style attributes for the to-be-created XShapes
+    bool mbUseDiagramModelData; // true
+
+    // If true and mxThemeDocument exists it will be re-imported to
+    // a newly created oox::drawingml::Theme object
+    bool mbForceThemePtrRecreation; // false
+
+protected:
+    void anchorToSdrObjGroup(SdrObjGroup& rTarget);
+
+public:
+    IDiagramHelper();
+    virtual ~IDiagramHelper();
+
+    // re-create XShapes
+    virtual void reLayout(SdrObjGroup& rTarget) = 0;
+
+    // get text representation of data tree
+    virtual OUString getString() const = 0;
+
+    // get children of provided data node
+    // use empty string for top-level nodes
+    // returns vector of (id, text)
+    virtual std::vector<std::pair<OUString, OUString>>
+    getChildren(const OUString& rParentId) const = 0;
+
+    // add/remove new top-level node to data model, returns its id
+    virtual OUString addNode(const OUString& rText) = 0;
+    virtual bool removeNode(const OUString& rNodeId) = 0;
+
+    // Undo/Redo helpers for extracting/restoring Diagram-defining data
+    virtual std::shared_ptr<svx::diagram::DiagramDataState> extractDiagramDataState() const = 0;
+    virtual void applyDiagramDataState(const std::shared_ptr<svx::diagram::DiagramDataState>& rState) = 0;
+
+    bool UseDiagramThemeData() const { return mbUseDiagramThemeData; }
+    bool UseDiagramModelData() const { return mbUseDiagramModelData; }
+    bool ForceThemePtrRecreation() const { return mbForceThemePtrRecreation; };
+
+    static void AddAdditionalVisualization(const SdrObjGroup& rTarget, SdrHdlList& rHdlList);
+};
+
+}} // end of namespace
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/include/svx/diagram/datamodel.hxx b/include/svx/diagram/datamodel.hxx
new file mode 100644
index 000000000..850cd8f78
--- /dev/null
+++ b/include/svx/diagram/datamodel.hxx
@@ -0,0 +1,274 @@
+/* -*- 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 INCLUDED_SVX_DIAGRAM_DATAMODEL_HXX
+#define INCLUDED_SVX_DIAGRAM_DATAMODEL_HXX
+
+#include <vector>
+#include <optional>
+#include <map>
+
+#include <svx/svxdllapi.h>
+#include <rtl/ustring.hxx>
+#include <rtl/ustrbuf.hxx>
+
+#include <com/sun/star/xml/dom/XDocument.hpp>
+#include <com/sun/star/drawing/XShape.hpp>
+
+namespace svx::diagram {
+
+enum TypeConstant {
+    XML_none = 0,
+    XML_type = 395,
+    XML_asst = 680,
+    XML_doc = 1924,
+    XML_node = 3596,
+    XML_norm = 3609,
+    XML_parOf = 3878,
+    XML_parTrans = 3879,
+    XML_pres = 4085,
+    XML_presOf = 4090,
+    XML_presParOf = 4091,
+    XML_rel = 4298,
+    XML_sibTrans = 4746,
+};
+
+/** A Connection
+ */
+struct SVXCORE_DLLPUBLIC Connection
+{
+    Connection();
+
+    TypeConstant mnXMLType;
+    OUString msModelId;
+    OUString msSourceId;
+    OUString msDestId;
+    OUString msParTransId;
+    OUString msPresId;
+    OUString msSibTransId;
+    sal_Int32 mnSourceOrder;
+    sal_Int32 mnDestOrder;
+
+};
+
+typedef std::vector< Connection > Connections;
+
+/** Text and properties for a point
+ * For proof of concept to make TextData available in svx level this
+ * is in a first run pretty simple, but may need to be extended accordingly
+ * up to similar data as in oox::drawingml::TextBody.
+ */
+struct SVXCORE_DLLPUBLIC TextBody
+{
+    // text from 1st paragraph (1st run)
+    OUString msText;
+
+    // attributes from TextBody::getTextProperties()
+    std::vector< std::pair< OUString, css::uno::Any >> maTextProps;
+};
+
+typedef std::shared_ptr< TextBody > TextBodyPtr;
+
+/** Styles for a Point (FillStyle/LineStyle/...)
+ */
+struct SVXCORE_DLLPUBLIC PointStyle
+{
+    // attributes (LineStyle/FillStyle/...)
+    std::vector< std::pair< OUString, css::uno::Any >> maProperties;
+};
+
+typedef std::shared_ptr< PointStyle > PointStylePtr;
+
+/** A point
+ */
+struct SVXCORE_DLLPUBLIC Point
+{
+    Point();
+
+    // The minimal text data from the imported Diagram
+    // in source format
+    TextBodyPtr msTextBody;
+
+    // The property sequence of pairs<OUString, css::uno::Any>,
+    // interpreted & assigned by the ::addShape(s) creators in the
+    // import filter that created a XShape associated/based on this entry
+    PointStylePtr msPointStylePtr;
+
+    OUString msCnxId;
+    OUString msModelId;
+    OUString msColorTransformCategoryId;
+    OUString msColorTransformTypeId;
+    OUString msLayoutCategoryId;
+    OUString msLayoutTypeId;
+    OUString msPlaceholderText;
+    OUString msPresentationAssociationId;
+    OUString msPresentationLayoutName;
+    OUString msPresentationLayoutStyleLabel;
+    OUString msQuickStyleCategoryId;
+    OUString msQuickStyleTypeId;
+
+    TypeConstant mnXMLType;
+    sal_Int32     mnMaxChildren;
+    sal_Int32     mnPreferredChildren;
+    sal_Int32     mnDirection;
+    std::optional<sal_Int32> moHierarchyBranch;
+    sal_Int32     mnResizeHandles;
+    sal_Int32     mnCustomAngle;
+    sal_Int32     mnPercentageNeighbourWidth;
+    sal_Int32     mnPercentageNeighbourHeight;
+    sal_Int32     mnPercentageOwnWidth;
+    sal_Int32     mnPercentageOwnHeight;
+    sal_Int32     mnIncludeAngleScale;
+    sal_Int32     mnRadiusScale;
+    sal_Int32     mnWidthScale;
+    sal_Int32     mnHeightScale;
+    sal_Int32     mnWidthOverride;
+    sal_Int32     mnHeightOverride;
+    sal_Int32     mnLayoutStyleCount;
+    sal_Int32     mnLayoutStyleIndex;
+
+    bool          mbOrgChartEnabled;
+    bool          mbBulletEnabled;
+    bool          mbCoherent3DOffset;
+    bool          mbCustomHorizontalFlip;
+    bool          mbCustomVerticalFlip;
+    bool          mbCustomText;
+    bool          mbIsPlaceholder;
+};
+
+typedef std::vector< Point >        Points;
+
+/** Snippet of Diagram ModelData for Diagram-defining data undo/redo
+ */
+class SVXCORE_DLLPUBLIC DiagramDataState
+{
+    Connections maConnections;
+    Points maPoints;
+
+public:
+    DiagramDataState(const Connections& rConnections, const Points& rPoints);
+
+    Connections& getConnections() { return maConnections; }
+    Points& getPoints() { return maPoints; }
+};
+
+typedef std::shared_ptr< DiagramDataState > DiagramDataStatePtr;
+
+/** The collected Diagram ModelData
+ */
+class SVXCORE_DLLPUBLIC DiagramData
+{
+public:
+    typedef std::map< OUString, Point* > PointNameMap;
+    typedef std::map< OUString, std::vector< Point* > > PointsNameMap;
+    typedef std::map< OUString, const Connection* > ConnectionNameMap;
+
+    struct SourceIdAndDepth
+    {
+        OUString msSourceId;
+        sal_Int32 mnDepth = 0;
+    };
+
+    /// Tracks connections: destination id -> {destination order, details} map.
+    typedef std::map< OUString, std::map<sal_Int32, SourceIdAndDepth > > StringMap;
+
+protected:
+    // Make constructor protected to signal that this anyway pure virtual class
+    // shall not be incarnated - target to use is oox::drawingml::DiagramData
+    DiagramData();
+
+public:
+    virtual ~DiagramData();
+
+    // creates temporary processing data from model data
+    virtual void buildDiagramDataModel(bool bClearOoxShapes);
+
+    // dump to readable format
+    virtual void dump() const = 0;
+
+    // read accesses
+    Connections& getConnections() { return maConnections; }
+    Points& getPoints() { return maPoints; }
+    StringMap& getPresOfNameMap() { return maPresOfNameMap; }
+    PointNameMap& getPointNameMap() { return maPointNameMap; }
+    PointsNameMap& getPointsPresNameMap() { return maPointsPresNameMap; }
+    ::std::vector<OUString>& getExtDrawings() { return maExtDrawings; }
+    const Point* getRootPoint() const;
+    OUString getString() const;
+    std::vector<std::pair<OUString, OUString>> getChildren(const OUString& rParentId) const;
+
+    const css::uno::Reference< css::xml::dom::XDocument >& getThemeDocument() const { return mxThemeDocument; }
+    void setThemeDocument( const css::uno::Reference< css::xml::dom::XDocument >& xRef ) { mxThemeDocument = xRef; }
+
+    const OUString& getBackgroundShapeModelID() const { return msBackgroundShapeModelID; }
+    void setBackgroundShapeModelID( const OUString& rModelID ) { msBackgroundShapeModelID = rModelID; }
+
+    // model modifiers
+    OUString addNode(const OUString& rText);
+    bool removeNode(const OUString& rNodeId);
+
+    // Undo/Redo helpers to extract/restore Diagram-defining data
+    DiagramDataStatePtr extractDiagramDataState() const;
+    void applyDiagramDataState(const DiagramDataStatePtr& rState);
+
+protected:
+    // helpers
+    void getChildrenString(OUStringBuffer& rBuf, const Point* pPoint, sal_Int32 nLevel) const;
+    void addConnection(TypeConstant nType, const OUString& sSourceId, const OUString& sDestId);
+
+    // evtl. existing alternative imported visualization identifier
+    ::std::vector<OUString>  maExtDrawings;
+
+    // The model definition, the parts available in svx.
+    // See evtl. parts in oox::drawingml::DiagramData that may need t obe accessed
+    // - logic connections/associations
+    Connections maConnections;
+
+    // - data point entries
+    Points maPoints;
+
+    // - style for the BackgroundShape (if used)
+    //   this is the property sequence of pairs<OUString, css::uno::Any>,
+    //   as interpreted & assigned by the ::addShape(s) creators in the
+    //   import filter
+    PointStylePtr maBackgroundShapeStyle;
+
+    // - Theme definition as css::xml::dom::XDocument
+    //    Note: I decided to use dom::XDocument which is already in use, instead of a
+    //          temp file what is also possible (implemented that for POC) but would
+    //          need to be created in PresentationFragmentHandler::importSlide. If
+    //          this needs to be written to a File, please refer to
+    //          fileDocxExport::WriteTheme(), look for "OOXTheme"
+    css::uno::Reference< css::xml::dom::XDocument > mxThemeDocument;
+
+    // temporary processing data, partially deleted when using build()
+    PointNameMap      maPointNameMap;
+    PointsNameMap     maPointsPresNameMap;
+    ConnectionNameMap maConnectionNameMap;
+    StringMap         maPresOfNameMap;
+    OUString          msBackgroundShapeModelID;
+};
+
+typedef std::shared_ptr< DiagramData > DiagramDataPtr;
+
+}
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */