/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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#include <svx/sdr/overlay/overlayobject.hxx>
#include <svx/sdr/overlay/overlaymanager.hxx>
#include <basegfx/matrix/b2dhommatrix.hxx>
#include <basegfx/vector/b2dvector.hxx>
#include <basegfx/matrix/b2dhommatrixtools.hxx>
#include <drawinglayer/primitive2d/transformprimitive2d.hxx>
#include <osl/diagnose.h>

namespace sdr::overlay
{
        void OverlayObject::objectChange()
        {
            const basegfx::B2DRange aPreviousRange(maBaseRange);
            maBaseRange.reset();
            resetPrimitive2DSequence();
//            setPrimitive2DSequence(drawinglayer::primitive2d::Primitive2DContainer());

            if(getOverlayManager() && !aPreviousRange.isEmpty())
            {
                getOverlayManager()->invalidateRange(aPreviousRange);
            }

            const basegfx::B2DRange& rCurrentRange = getBaseRange();

            if(getOverlayManager() && rCurrentRange != aPreviousRange && !rCurrentRange.isEmpty())
            {
                getOverlayManager()->invalidateRange(rCurrentRange);
            }
        }

        // OverlayObject implementations.
        drawinglayer::primitive2d::Primitive2DContainer OverlayObject::createOverlayObjectPrimitive2DSequence()
        {
            // Default implementation has to assert a missing implementation. It cannot
            // be useful to have overlay object derivations which have no visualisation
            // at all
            OSL_FAIL("OverlayObject derivation without visualisation definition (missing createOverlayObjectPrimitive2DSequence implementation) (!)");
            return drawinglayer::primitive2d::Primitive2DContainer();
        }

        sal_uInt32 OverlayObject::impCheckBlinkTimeValueRange(sal_uInt64 nBlinkTime)
        {
            if(nBlinkTime < 25)
            {
                nBlinkTime = 25;
            }
            else if(nBlinkTime > 10000)
            {
                nBlinkTime = 10000;
            }

            return nBlinkTime;
        }

        void OverlayObject::allowAntiAliase(bool bNew)
        {
            if(bNew != mbAllowsAntiAliase)
            {
                // remember new value
                mbAllowsAntiAliase = bNew;

                // register change (after change)
                objectChange();
            }
        }

        OverlayObject::OverlayObject(Color aBaseColor)
        :   mpOverlayManager(nullptr),
            maOffset(0.0, 0.0),
            maBaseColor(aBaseColor),
            mbIsVisible(true),
            mbIsHittable(true),
            mbAllowsAnimation(false),
            mbAllowsAntiAliase(true),
            mbHighContrastSelection(false)
        {
        }

        OverlayObject::~OverlayObject()
        {
            OSL_ENSURE(nullptr == getOverlayManager(), "OverlayObject is destructed which is still registered at OverlayManager (!)");
        }

        drawinglayer::primitive2d::Primitive2DContainer OverlayObject::getOverlayObjectPrimitive2DSequence() const
        {
            if(getPrimitive2DSequence().empty())
            {
                // no existing sequence; create one
                const_cast< OverlayObject* >(this)->maPrimitive2DSequence = const_cast< OverlayObject* >(this)->createOverlayObjectPrimitive2DSequence();

                if(!getOffset().equalZero())
                {
                    // embed to offset transformation
                    const basegfx::B2DHomMatrix aTranslateGridOffset(
                        basegfx::utils::createTranslateB2DHomMatrix(
                            getOffset()));
                    const_cast< OverlayObject* >(this)->maPrimitive2DSequence =
                        drawinglayer::primitive2d::Primitive2DContainer {
                                new drawinglayer::primitive2d::TransformPrimitive2D(
                                    aTranslateGridOffset,
                                    std::move(const_cast<drawinglayer::primitive2d::Primitive2DContainer&>(maPrimitive2DSequence)))
                        };
                }
            }

            return getPrimitive2DSequence();
        }

        const basegfx::B2DRange& OverlayObject::getBaseRange() const
        {
            if(getOverlayManager() && maBaseRange.isEmpty())
            {
                const drawinglayer::primitive2d::Primitive2DContainer aSequence = getOverlayObjectPrimitive2DSequence();

                if(!aSequence.empty())
                {
                    const drawinglayer::geometry::ViewInformation2D & aViewInformation2D(getOverlayManager()->getCurrentViewInformation2D());

                    const_cast< sdr::overlay::OverlayObject* >(this)->maBaseRange =
                        aSequence.getB2DRange(aViewInformation2D);
                }
            }

            return maBaseRange;
        }

        void OverlayObject::setVisible(bool bNew)
        {
            if(bNew != mbIsVisible)
            {
                // remember new value
                mbIsVisible = bNew;

                // register change (after change)
                objectChange();
            }
        }

        void OverlayObject::setHittable(bool bNew)
        {
            if(bNew != mbIsHittable)
            {
                // remember new value
                mbIsHittable = bNew;

                // register change (after change)
                objectChange();
            }
        }

        void OverlayObject::setBaseColor(Color aNew)
        {
            if(aNew != maBaseColor)
            {
                // remember new value
                maBaseColor = aNew;

                // register change (after change)
                objectChange();
            }
        }

        void OverlayObject::setOffset(const basegfx::B2DVector& rOffset)
        {
            if(rOffset != maOffset)
            {
                // remember new value
                maOffset = rOffset;

                // register change (after change)
                objectChange();
            }
        }

        void OverlayObject::Trigger(sal_uInt32 /*nTime*/)
        {
            // default does not register again
        }

        void OverlayObject::stripeDefinitionHasChanged()
        {
            // default does not need to do anything
        }


        OverlayObjectWithBasePosition::OverlayObjectWithBasePosition(const basegfx::B2DPoint& rBasePos, Color aBaseColor)
        :   OverlayObject(aBaseColor),
            maBasePosition(rBasePos)
        {
        }

        OverlayObjectWithBasePosition::~OverlayObjectWithBasePosition()
        {
        }

        void OverlayObjectWithBasePosition::setBasePosition(const basegfx::B2DPoint& rNew)
        {
            if(rNew != maBasePosition)
            {
                // remember new value
                maBasePosition = rNew;

                // register change (after change)
                objectChange();
            }
        }

} // end of namespace

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