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 *   Licensed to the Apache Software Foundation (ASF) under one or more
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#ifndef INCLUDED_DRAWINGLAYER_PRIMITIVE2D_BORDERLINEPRIMITIVE2D_HXX
#define INCLUDED_DRAWINGLAYER_PRIMITIVE2D_BORDERLINEPRIMITIVE2D_HXX

#include <drawinglayer/drawinglayerdllapi.h>

#include <drawinglayer/primitive2d/baseprimitive2d.hxx>
#include <basegfx/color/bcolor.hxx>
#include <basegfx/matrix/b2dhommatrix.hxx>
#include <basegfx/polygon/b2dpolypolygon.hxx>
#include <drawinglayer/attribute/lineattribute.hxx>
#include <drawinglayer/attribute/strokeattribute.hxx>

enum class SvxBorderLineStyle : sal_Int16;

namespace drawinglayer
{
    namespace primitive2d
    {
        /** BorderLine class
        Helper class holding the style definition for a single part of a full BorderLine definition.
        Line extends are for start/end and for Left/Right, seen in vector direction. If
        Left != Right that means the line has a diagonal start/end.
        Think about it similar to a trapezoid, but not aligned to X-Axis and using the
        perpendicular vector to the given one in a right-handed coordinate system.
        */
        class DRAWINGLAYER_DLLPUBLIC BorderLine
        {
        private:
            // line attribute containing Width, Color and others
            drawinglayer::attribute::LineAttribute  maLineAttribute;

            // line extends
            double              mfStartLeft;
            double              mfStartRight;
            double              mfEndLeft;
            double              mfEndRight;

            // if this is a gap, this is set to true
            bool                mbIsGap;

        public:
            // Constructor for visible BorderLine segments
            BorderLine(
                const drawinglayer::attribute::LineAttribute& rLineAttribute,
                double fStartLeft = 0.0,
                double fStartRight = 0.0,
                double fEndLeft = 0.0,
                double fEndRight = 0.0);

            // Constructor for gap BorderLine segments
            BorderLine(double fWidth);

            ~BorderLine();

            const drawinglayer::attribute::LineAttribute& getLineAttribute() const { return maLineAttribute; }
            double getStartLeft() const { return mfStartLeft; }
            double getStartRight() const { return mfStartRight; }
            double getEndLeft() const { return mfEndLeft; }
            double getEndRight() const { return mfEndRight; }
            bool isGap() const { return mbIsGap; }

            /// compare operator
            bool operator==(const BorderLine& rBorderLine) const;
        };

        /// helper to try to merge two instances of BorderLinePrimitive2D. If it was possible,
        /// a merged version is in the returned Primitive2DReference. Lots of preconditions
        /// have to be met to allow that, see implementation (and maybe even expand)
        Primitive2DReference DRAWINGLAYER_DLLPUBLIC tryMergeBorderLinePrimitive2D(
            const Primitive2DReference& rCandidateA,
            const Primitive2DReference& rCandidateB);

        /** BorderLinePrimitive2D class

        This is the basic primitive to build frames around objects, e.g. tables.
        It defines a single or double line from Start to End using the LeftWidth,
        Distance and RightWidth definitions.
        The LineStart/End overlap is defined in the BorderLines definitions (see
        class BorderLine above).
        */
        class DRAWINGLAYER_DLLPUBLIC BorderLinePrimitive2D : public BufferedDecompositionPrimitive2D
        {
        private:
            /// the line definition
            basegfx::B2DPoint                               maStart;
            basegfx::B2DPoint                               maEnd;

            /// the single BorderLine style definition(s), one or three mostly used
            std::vector< BorderLine >                       maBorderLines;

            /// common style definitions
            const drawinglayer::attribute::StrokeAttribute  maStrokeAttribute;

            /// create local decomposition
            virtual void create2DDecomposition(Primitive2DContainer& rContainer, const geometry::ViewInformation2D& rViewInformation) const override;

            /// helper to get the full width from maBorderLines
            double getFullWidth() const;

        public:
            /// simplified constructor for BorderLine with single edge
            BorderLinePrimitive2D(
                const basegfx::B2DPoint& rStart,
                const basegfx::B2DPoint& rEnd,
                const std::vector< BorderLine >& rBorderLines,
                const drawinglayer::attribute::StrokeAttribute& rStrokeAttribute);

            /// data read access
            const basegfx::B2DPoint& getStart() const { return maStart; }
            const basegfx::B2DPoint& getEnd() const { return maEnd; }
            const std::vector< BorderLine >& getBorderLines() const { return maBorderLines; }
            const drawinglayer::attribute::StrokeAttribute& getStrokeAttribute() const { return maStrokeAttribute; }

            /// helper to decide if AntiAliasing should be used
            bool isHorizontalOrVertical(const geometry::ViewInformation2D& rViewInformation) const;

            /// compare operator
            virtual bool operator==(const BasePrimitive2D& rPrimitive) const override;

            /// provide unique ID
            DeclPrimitive2DIDBlock()
        };
    } // end of namespace primitive2d
} // end of namespace drawinglayer


#endif //INCLUDED_DRAWINGLAYER_PRIMITIVE2D_BORDERLINEPRIMITIVE2D_HXX

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