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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 .
+ */
+
+#ifndef INCLUDED_SVX_FRAMELINK_HXX
+#define INCLUDED_SVX_FRAMELINK_HXX
+
+#include <sal/types.h>
+#include <tools/color.hxx>
+#include <svx/svxdllapi.h>
+#include <editeng/borderline.hxx>
+
+namespace svx::frame {
+
+
+// Enums
+
+
+/** Specifies how the reference points for frame borders are used.
+ */
+enum class RefMode : sal_uInt8
+{
+    /** Frame borders are drawn centered to the reference points. */
+    Centered,
+
+    /** The reference points specify the begin of the frame border width.
+
+        The result is that horizontal lines are drawn below, and vertical lines
+        are drawn right of the reference points.
+     */
+    Begin,
+
+    /** The reference points specify the end of the frame border width.
+
+        The result is that horizontal lines are drawn above, and vertical lines
+        are drawn left of the reference points.
+     */
+    End
+};
+
+
+// Classes
+
+
+/** Contains the widths of primary and secondary line of a frame style.
+
+    In the following, "frame style" is a complete style of one frame border,
+    i.e. the double line at the left side of the frame. A "line" is always a
+    trivial single line, i.e. the first line of a double frame style.
+
+    The following states of the members of this struct are valid:
+
+    mnPrim      mnDist      mnSecn      frame style
+    -------------------------------------------------
+    0           0           0           invisible
+    >0          0           0           single
+    >0          >0          >0          double
+
+    The behaviour of the member functions for other states is not defined.
+
+    Per definition the primary line in double frame styles is:
+    -   The top line for horizontal frame borders.
+    -   The left line for vertical frame borders.
+    -   The bottom-left line for top-left to bottom-right diagonal frame borders.
+    -   The top-left line for bottom-left to top-right diagonal frame borders.
+
+    The following picture shows the upper end of a vertical double frame
+    border.
+
+        |<---------------- GetWidth() ----------------->|
+        |                                               |
+        |<----- mnPrim ----->||<- mnDist ->||<- mnSecn >|
+        |                    ||            ||           |
+        ######################              #############
+        ######################              #############
+        ######################              #############
+        ######################              #############
+        ######################  |           #############
+        ######################  |           #############
+                                |
+                                |<- middle of the frame border
+ */
+class SAL_WARN_UNUSED SVXCORE_DLLPUBLIC Style
+{
+private:
+    Color               maColorPrim;
+    Color               maColorSecn;
+    Color               maColorGap;
+    double              mfPrim;     /// Width of primary (single, left, or top) line.
+    double              mfDist;     /// Distance between primary and secondary line.
+    double              mfSecn;     /// Width of secondary (right or bottom) line.
+    double              mfPatternScale; /// Scale used for line pattern spacing.
+    RefMode             meRefMode;  /// Reference point handling for this frame border.
+    SvxBorderLineStyle  mnType;
+    bool                mbWordTableCell : 1;
+    bool                mbUseGapColor : 1;
+
+public:
+    /** Constructs an invisible frame style. */
+    explicit Style();
+    /** Constructs a frame style with passed line widths. */
+    explicit Style( double nP, double nD, double nS, SvxBorderLineStyle nType, double fScale );
+    /** Constructs a frame style with passed color and line widths. */
+    explicit Style( const Color& rColorPrim, const Color& rColorSecn, const Color& rColorGap, bool bUseGapColor, double nP, double nD, double nS, SvxBorderLineStyle nType, double fScale );
+    /** Constructs a frame style from the passed SvxBorderLine struct. */
+    explicit Style( const editeng::SvxBorderLine* pBorder, double fScale );
+
+    RefMode GetRefMode() const { return meRefMode; }
+    Color GetColorPrim() const { return maColorPrim; }
+    Color GetColorSecn() const { return maColorSecn; }
+    Color GetColorGap() const { return maColorGap; }
+    bool UseGapColor() const { return mbUseGapColor; }
+    double Prim() const { return mfPrim; }
+    double Dist() const { return mfDist; }
+    double Secn() const { return mfSecn; }
+    double PatternScale() const { return mfPatternScale;}
+    SvxBorderLineStyle Type() const { return mnType; }
+
+    /// Check if this style is used - this depends on it having any width definition.
+    /// As can be seen in the definition comment above, Prim() *must* be non zero to have a width
+    bool IsUsed() const { return 0.0 != mfPrim; }
+
+    /** Returns the total width of this frame style. */
+    double GetWidth() const { return mfPrim + mfDist + mfSecn; }
+
+    /** Sets the frame style to invisible state. */
+    void Clear();
+    /** Sets the frame style to the passed line widths. */
+    void Set( double nP, double nD, double nS );
+    /** Sets the frame style to the passed line widths. */
+    void Set( const Color& rColorPrim, const Color& rColorSecn, const Color& rColorGap, bool bUseGapColor, double nP, double nD, double nS );
+    /** Sets the frame style to the passed SvxBorderLine struct. If nullptr, resets the style */
+    void Set( const editeng::SvxBorderLine* pBorder, double fScale, sal_uInt16 nMaxWidth = SAL_MAX_UINT16 );
+
+    /** Sets a new reference point handling mode, does not modify other settings. */
+    void SetRefMode( RefMode eRefMode ) { meRefMode = eRefMode; }
+    /** Sets a new color, does not modify other settings. */
+    void SetColorPrim( const Color& rColor ) { maColorPrim = rColor; }
+    void SetColorSecn( const Color& rColor ) { maColorSecn = rColor; }
+    /** Sets whether to use dotted style for single hair lines. */
+    void SetType( SvxBorderLineStyle nType ) { mnType = nType; }
+
+    /** Mirrors this style (exchanges primary and secondary), if it is a double frame style. */
+    Style& MirrorSelf();
+
+    /** Enables the Word-compatible Style comparison code. */
+    void SetWordTableCell(bool bWordTableCell) { mbWordTableCell = bWordTableCell; }
+
+    bool operator==( const Style& rOther) const;
+    bool operator<( const Style& rOther) const;
+};
+
+inline bool operator>( const Style& rL, const Style& rR ) { return rR.operator<(rL); }
+
+inline Style::Style()
+    : mfPrim(0)
+    , mfDist(0)
+    , mfSecn(0)
+    , mfPatternScale(1.0)
+    , meRefMode(RefMode::Centered)
+    , mnType(SvxBorderLineStyle::SOLID)
+    , mbWordTableCell(false)
+    , mbUseGapColor(false)
+{}
+
+}
+
+
+#endif
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */