/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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#include "tablehandles.hxx"

#include <utility>
#include <vcl/outdev.hxx>
#include <vcl/canvastools.hxx>
#include <vcl/ptrstyle.hxx>
#include <basegfx/polygon/b2dpolygon.hxx>
#include <svx/sdr/overlay/overlayobject.hxx>
#include <svx/sdr/overlay/overlaymanager.hxx>
#include <svx/sdrpagewindow.hxx>
#include <svx/sdrpaintwindow.hxx>
#include <svx/svdmrkv.hxx>
#include <svx/svdpagv.hxx>
#include <drawinglayer/primitive2d/PolyPolygonHairlinePrimitive2D.hxx>
#include <sdr/overlay/overlayrectangle.hxx>
#include <drawinglayer/primitive2d/hiddengeometryprimitive2d.hxx>
#include <svtools/optionsdrawinglayer.hxx>
#include <osl/diagnose.h>

namespace sdr::table {

namespace {

class OverlayTableEdge : public sdr::overlay::OverlayObject
{
protected:
    basegfx::B2DPolyPolygon maPolyPolygon;
    bool                    mbVisible;

    // geometry creation for OverlayObject
    virtual drawinglayer::primitive2d::Primitive2DContainer createOverlayObjectPrimitive2DSequence() override;

public:
    OverlayTableEdge( basegfx::B2DPolyPolygon aPolyPolygon, bool bVisible );
};

}

TableEdgeHdl::TableEdgeHdl( const Point& rPnt, bool bHorizontal, sal_Int32 nMin, sal_Int32 nMax, sal_Int32 nEdges )
: SdrHdl( rPnt, SdrHdlKind::User )
, mbHorizontal( bHorizontal )
, mnMin( nMin )
, mnMax( nMax )
, maEdges(nEdges)
{
}

void TableEdgeHdl::SetEdge( sal_Int32 nEdge, sal_Int32 nStart, sal_Int32 nEnd, TableEdgeState eState )
{
    if( (nEdge >= 0) && (nEdge <= sal::static_int_cast<sal_Int32>(maEdges.size())) )
    {
        maEdges[nEdge].mnStart = nStart;
        maEdges[nEdge].mnEnd = nEnd;
        maEdges[nEdge].meState = eState;
    }
    else
    {
        OSL_FAIL( "sdr::table::TableEdgeHdl::SetEdge(), invalid edge!" );
    }
}

PointerStyle TableEdgeHdl::GetPointer() const
{
    if( mbHorizontal )
        return PointerStyle::VSplit;
    else
        return PointerStyle::HSplit;
}

sal_Int32 TableEdgeHdl::GetValidDragOffset( const SdrDragStat& rDrag ) const
{
    return std::clamp( static_cast<sal_Int32>(mbHorizontal ? rDrag.GetDY() : rDrag.GetDX()), mnMin, mnMax );
}

basegfx::B2DPolyPolygon TableEdgeHdl::getSpecialDragPoly(const SdrDragStat& rDrag) const
{
    basegfx::B2DPolyPolygon aVisible;
    basegfx::B2DPolyPolygon aInvisible;

    // create and return visible and non-visible parts for drag
    getPolyPolygon(aVisible, aInvisible, &rDrag);
    aVisible.append(aInvisible);

    return aVisible;
}

void TableEdgeHdl::getPolyPolygon(basegfx::B2DPolyPolygon& rVisible, basegfx::B2DPolyPolygon& rInvisible, const SdrDragStat* pDrag) const
{
    // changed method to create visible and invisible partial polygons in one run in
    // separate PolyPolygons; both kinds are used
    basegfx::B2DPoint aOffset(m_aPos.X(), m_aPos.Y());
    rVisible.clear();
    rInvisible.clear();

    if( pDrag )
    {
        basegfx::Axis2D eDragAxis = mbHorizontal ? basegfx::Axis2D::Y : basegfx::Axis2D::X;
        aOffset.set(eDragAxis, aOffset.get(eDragAxis) + GetValidDragOffset( *pDrag ));
    }

    basegfx::B2DPoint aStart(aOffset), aEnd(aOffset);
    basegfx::Axis2D eAxis = mbHorizontal ? basegfx::Axis2D::X : basegfx::Axis2D::Y;

    for( const TableEdge& aEdge : maEdges )
    {
        aStart.set(eAxis, aOffset.get(eAxis) + aEdge.mnStart);
        aEnd.set(eAxis, aOffset.get(eAxis) + aEdge.mnEnd);

        basegfx::B2DPolygon aPolygon;
        aPolygon.append( aStart );
        aPolygon.append( aEnd );

        if(aEdge.meState == Visible)
        {
            rVisible.append(aPolygon);
        }
        else
        {
            rInvisible.append(aPolygon);
        }
    }
}

void TableEdgeHdl::CreateB2dIAObject()
{
    GetRidOfIAObject();

    if(!m_pHdlList || !m_pHdlList->GetView() || m_pHdlList->GetView()->areMarkHandlesHidden())
        return;

    SdrMarkView* pView = m_pHdlList->GetView();
    SdrPageView* pPageView = pView->GetSdrPageView();

    if(!pPageView)
        return;

    basegfx::B2DPolyPolygon aVisible;
    basegfx::B2DPolyPolygon aInvisible;

    // get visible and invisible parts
    getPolyPolygon(aVisible, aInvisible, nullptr);

    if(!(aVisible.count() || aInvisible.count()))
        return;

    for(sal_uInt32 nWindow = 0; nWindow < pPageView->PageWindowCount(); nWindow++)
    {
        const SdrPageWindow& rPageWindow = *pPageView->GetPageWindow(nWindow);

        if(rPageWindow.GetPaintWindow().OutputToWindow())
        {
            const rtl::Reference< sdr::overlay::OverlayManager >& xManager = rPageWindow.GetOverlayManager();
            if (xManager.is())
            {
                if(aVisible.count())
                {
                    // create overlay object for visible parts
                    std::unique_ptr<sdr::overlay::OverlayObject> pOverlayObject(new OverlayTableEdge(aVisible, true));

                    // OVERLAYMANAGER
                    insertNewlyCreatedOverlayObjectForSdrHdl(
                        std::move(pOverlayObject),
                        rPageWindow.GetObjectContact(),
                        *xManager);
                }

                if(aInvisible.count())
                {
                    // also create overlay object for invisible parts to allow
                    // a standard HitTest using the primitives from that overlay object
                    // (see OverlayTableEdge implementation)
                    std::unique_ptr<sdr::overlay::OverlayObject> pOverlayObject(new OverlayTableEdge(aInvisible, false));

                    // OVERLAYMANAGER
                    insertNewlyCreatedOverlayObjectForSdrHdl(
                        std::move(pOverlayObject),
                        rPageWindow.GetObjectContact(),
                        *xManager);
                }
            }
        }
    }
}


OverlayTableEdge::OverlayTableEdge( basegfx::B2DPolyPolygon aPolyPolygon, bool bVisible )
:   OverlayObject(COL_GRAY)
,   maPolyPolygon(std::move( aPolyPolygon ))
,   mbVisible(bVisible)
{
}

drawinglayer::primitive2d::Primitive2DContainer OverlayTableEdge::createOverlayObjectPrimitive2DSequence()
{
    drawinglayer::primitive2d::Primitive2DContainer aRetval;

    if(maPolyPolygon.count())
    {
        // Discussed with CL. Currently i will leave the transparence out since this
        // a little bit expensive. We may check the look with drag polygons later
        const drawinglayer::primitive2d::Primitive2DReference aReference(
            new drawinglayer::primitive2d::PolyPolygonHairlinePrimitive2D(
                maPolyPolygon,
                getBaseColor().getBColor()));

        if(mbVisible)
        {
            // visible, just return as sequence
            aRetval = drawinglayer::primitive2d::Primitive2DContainer { aReference };
        }
        else
        {
            // embed in HiddenGeometryPrimitive2D to support HitTest of this invisible
            // overlay object
            drawinglayer::primitive2d::Primitive2DContainer aSequence { aReference };
            const drawinglayer::primitive2d::Primitive2DReference aNewReference(
                new drawinglayer::primitive2d::HiddenGeometryPrimitive2D(std::move(aSequence)));
            aRetval = drawinglayer::primitive2d::Primitive2DContainer { aNewReference };
        }
    }

    return aRetval;
}


TableBorderHdl::TableBorderHdl(
    const tools::Rectangle& rRect,
    bool bAnimate)
:   SdrHdl(rRect.TopLeft(), SdrHdlKind::Move),
    maRectangle(rRect),
    mbAnimate(bAnimate)
{
}

PointerStyle TableBorderHdl::GetPointer() const
{
    return PointerStyle::Move;
}

// create marker for this kind
void TableBorderHdl::CreateB2dIAObject()
{
    GetRidOfIAObject();

    if (!m_pHdlList || !m_pHdlList->GetView() || m_pHdlList->GetView()->areMarkHandlesHidden())
        return;

    SdrMarkView* pView = m_pHdlList->GetView();
    SdrPageView* pPageView = pView->GetSdrPageView();

    if (!pPageView)
        return;

    for(sal_uInt32 nWindow = 0; nWindow < pPageView->PageWindowCount(); nWindow++)
    {
        const SdrPageWindow& rPageWindow = *pPageView->GetPageWindow(nWindow);

        if (rPageWindow.GetPaintWindow().OutputToWindow())
        {
            const rtl::Reference<sdr::overlay::OverlayManager>& xManager = rPageWindow.GetOverlayManager();

            if (xManager.is())
            {
                const basegfx::B2DRange aRange = vcl::unotools::b2DRectangleFromRectangle(maRectangle);
                const Color aHilightColor(SvtOptionsDrawinglayer::getHilightColor());
                const double fTransparence(SvtOptionsDrawinglayer::GetTransparentSelectionPercent() * 0.01);
                // make animation dependent from text edit active, because for tables
                // this handle is also used when text edit *is* active for it. This
                // interferes too much concerning repaint stuff (at least as long as
                // text edit is not yet on the overlay)

                OutputDevice& rOutDev = rPageWindow.GetPaintWindow().GetOutputDevice();
                float fScaleFactor = rOutDev.GetDPIScaleFactor();
                double fWidth = fScaleFactor * 6.0;

                std::unique_ptr<sdr::overlay::OverlayObject> pOverlayObject(
                    new sdr::overlay::OverlayRectangle(aRange.getMinimum(), aRange.getMaximum(),
                                                       aHilightColor, fTransparence,
                                                       fWidth, 0.0, 0.0, mbAnimate));

                // OVERLAYMANAGER
                insertNewlyCreatedOverlayObjectForSdrHdl(
                    std::move(pOverlayObject),
                    rPageWindow.GetObjectContact(),
                    *xManager);
            }
        }
    }
}


} // end of namespace sdr::table

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