/* -*- 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 .

 */

#include "viewcontactoftableobj.hxx"

#include <svx/svdotable.hxx>

#include <com/sun/star/table/XTable.hpp>

#include <basegfx/polygon/b2dpolygontools.hxx>

#include <sdr/primitive2d/sdrattributecreator.hxx>

#include <sdr/primitive2d/sdrdecompositiontools.hxx>

#include <sdr/primitive2d/sdrcellprimitive.hxx>

#include <basegfx/matrix/b2dhommatrix.hxx>

#include <sdr/attribute/sdrtextattribute.hxx>

#include <svx/sdr/primitive2d/svx_primitivetypes2d.hxx>

#include <editeng/borderline.hxx>

#include <drawinglayer/attribute/sdrlineattribute.hxx>

#include <drawinglayer/attribute/sdrshadowattribute.hxx>

#include <drawinglayer/primitive2d/sdrdecompositiontools2d.hxx>

#include <drawinglayer/primitive2d/structuretagprimitive2d.hxx>

#include <drawinglayer/primitive2d/transformprimitive2d.hxx>

#include <basegfx/matrix/b2dhommatrixtools.hxx>

#include <svx/sdr/contact/viewobjectcontactofsdrobj.hxx>

#include <svx/sdr/contact/objectcontact.hxx>

#include <svx/svdpage.hxx>

#include <svx/framelink.hxx>

#include <svx/framelinkarray.hxx>

#include <svx/sdooitm.hxx>

#include <utility>

#include <vcl/canvastools.hxx>

#include <o3tl/unit_conversion.hxx>

#include <svx/xfltrit.hxx>

#include <cell.hxx>

#include "tablelayouter.hxx"

using editeng::SvxBorderLine;

using namespace com::sun::star;

namespace drawinglayer::primitive2d

{

        Primitive2DReference SdrCellPrimitive2D::create2DDecomposition(const geometry::ViewInformation2D& /*aViewInformation*/) const

        {

            Primitive2DContainer aContainer;

            // prepare unit polygon

            const basegfx::B2DPolyPolygon aUnitPolyPolygon(basegfx::utils::createUnitPolygon());

            // add fill

            if(!getSdrFTAttribute().getFill().isDefault())

            {

                basegfx::B2DPolyPolygon aTransformed(aUnitPolyPolygon);

                aTransformed.transform(getTransform());

                aContainer.push_back(

                    createPolyPolygonFillPrimitive(

                        aTransformed,

                        getSdrFTAttribute().getFill(),

                        getSdrFTAttribute().getFillFloatTransGradient()));

            }

            else

            {

                // if no fill create one for HitTest and BoundRect fallback

                aContainer.push_back(

                    createHiddenGeometryPrimitives2D(

                        true,

                        aUnitPolyPolygon,

                        getTransform()));

            }

            // add text

            if(!getSdrFTAttribute().getText().isDefault())

            {

                aContainer.push_back(

                    createTextPrimitive(

                        aUnitPolyPolygon,

                        getTransform(),

                        getSdrFTAttribute().getText(),

                        attribute::SdrLineAttribute(),

                        true,

                        false));

            }

            return new GroupPrimitive2D(std::move(aContainer));

        }

        bool SdrCellPrimitive2D::operator==(const BasePrimitive2D& rPrimitive) const

        {

            if(BufferedDecompositionPrimitive2D::operator==(rPrimitive))

            {

                const SdrCellPrimitive2D& rCompare = static_cast<const SdrCellPrimitive2D&>(rPrimitive);

                return (getTransform() == rCompare.getTransform()

                    && getSdrFTAttribute() == rCompare.getSdrFTAttribute());

            }

            return false;

        }

        // provide unique ID

        sal_uInt32 SdrCellPrimitive2D::getPrimitive2DID() const

        {

            return PRIMITIVE2D_ID_SDRCELLPRIMITIVE2D;

        }

} // end of namespace

namespace sdr::contact

{

    namespace {

        class ViewObjectContactOfTableObj : public ViewObjectContactOfSdrObj

        {

            public:

                ViewObjectContactOfTableObj(ObjectContact& rObjectContact, ViewContact& rViewContact)

                    : ViewObjectContactOfSdrObj(rObjectContact, rViewContact)

                {

                }

            protected:

                virtual void createPrimitive2DSequence(DisplayInfo const& rDisplayInfo, drawinglayer::primitive2d::Primitive2DDecompositionVisitor& rVisitor) const override;

        };

    } // namespace

        static svx::frame::Style impGetLineStyle(

            const sdr::table::TableLayouter& rLayouter,

            sal_Int32 nX,

            sal_Int32 nY,

            bool bHorizontal,

            sal_Int32 nColCount,

            sal_Int32 nRowCount,

            bool bIsRTL)

        {

            if(nX >= 0 && nX <= nColCount && nY >= 0 && nY <= nRowCount)

            {

                const SvxBorderLine* pLine = rLayouter.getBorderLine(nX, nY, bHorizontal);

                if(pLine)

                {

                    // copy line content

                    SvxBorderLine aLine(*pLine);

                    // check for mirroring. This shall always be done when it is

                    // not a top- or rightmost line

                    bool bMirror(aLine.isDouble());

                    if(bMirror)

                    {

                        if(bHorizontal)

                        {

                            // mirror all bottom lines

                            bMirror = (0 != nY);

                        }

                        else

                        {

                            // mirror all left lines

                            bMirror = (bIsRTL ? 0 != nX : nX != nColCount);

                        }

                    }

                    if(bMirror)

                    {

                        aLine.SetMirrorWidths( );

                    }

                    constexpr double fTwipsToMM(

                        o3tl::convert(1.0, o3tl::Length::twip, o3tl::Length::mm100));

                    return svx::frame::Style(&aLine, fTwipsToMM);

                }

            }

            // no success, copy empty line

            return svx::frame::Style();

        }

        static void createPrimitive2DSequenceImpl(

                sdr::table::SdrTableObj const& rTableObj,

                bool const isTaggedPDF,

                drawinglayer::primitive2d::Primitive2DDecompositionVisitor& rVisitor)

        {

            const rtl::Reference< table::TableModel >& xTable = rTableObj.getUnoTable();

            if(xTable.is())

            {

                // create primitive representation for table. Cell info goes

                // directly to aRetval, Border info to aBorderSequence and added

                // later to get the correct overlapping

                drawinglayer::primitive2d::Primitive2DContainer aRetval;

                drawinglayer::primitive2d::Primitive2DContainer aRetvalForShadow;

                const sal_Int32 nRowCount(xTable->getRowCount());

                const sal_Int32 nColCount(xTable->getColumnCount());

                const sal_Int32 nAllCount(nRowCount * nColCount);

                SdrPage const*const pPage(rTableObj.getSdrPageFromSdrObject());

                if(nAllCount)

                {

                    const sdr::table::TableLayouter& rTableLayouter(rTableObj.getTableLayouter());

                    const bool bIsRTL(css::text::WritingMode_RL_TB == rTableObj.GetWritingMode());

                    sdr::table::CellPos aCellPos;

                    sdr::table::CellRef xCurrentCell;

                    basegfx::B2IRectangle aCellArea;

                    // create range using the model data directly. This is in SdrTextObj::aRect which i will access using

                    // GetGeoRect() to not trigger any calculations. It's the unrotated geometry.

                    const basegfx::B2DRange aObjectRange = vcl::unotools::b2DRectangleFromRectangle(rTableObj.GetGeoRect());

                    // To create the CellBorderPrimitives, use the tooling from svx::frame::Array

                    // which is capable of creating the needed visualization. Fill it during the

                    // anyways needed run over the table.

                    svx::frame::Array aArray;

                    // initialize CellBorderArray for primitive creation

                    aArray.Initialize(nColCount, nRowCount);

                    // create single primitives per cell

                    for(aCellPos.mnRow = 0; aCellPos.mnRow < nRowCount; aCellPos.mnRow++)

                    {

                        drawinglayer::primitive2d::Primitive2DContainer row;

                        // add RowHeight to CellBorderArray for primitive creation

                        aArray.SetRowHeight(aCellPos.mnRow, rTableLayouter.getRowHeight(aCellPos.mnRow));

                        for(aCellPos.mnCol = 0; aCellPos.mnCol < nColCount; aCellPos.mnCol++)

                        {

                            drawinglayer::primitive2d::Primitive2DContainer cell;

                            // add ColWidth to CellBorderArray for primitive creation, only

                            // needs to be done in the 1st run

                            if(0 == aCellPos.mnRow)

                            {

                                aArray.SetColWidth(aCellPos.mnCol, rTableLayouter.getColumnWidth(aCellPos.mnCol));

                            }

                            // access the cell

                            xCurrentCell = xTable->getCell(aCellPos.mnCol, aCellPos.mnRow);

                            if(xCurrentCell.is())

                            {

                                // tdf#135843: Find correct neighbor cell index for merged cells

                                auto nNextCol = aCellPos.mnCol + xCurrentCell->getColumnSpan();

                                auto nNextRow = aCellPos.mnRow + xCurrentCell->getRowSpan();

                                // copy styles for current cell to CellBorderArray for primitive creation

                                aArray.SetCellStyleLeft(

                                    aCellPos.mnCol, aCellPos.mnRow,

                                    impGetLineStyle(rTableLayouter, aCellPos.mnCol, aCellPos.mnRow,

                                                    false, nColCount, nRowCount, bIsRTL));

                                aArray.SetCellStyleRight(

                                    aCellPos.mnCol, aCellPos.mnRow,

                                    impGetLineStyle(rTableLayouter, nNextCol, aCellPos.mnRow, false,

                                                    nColCount, nRowCount, bIsRTL));

                                aArray.SetCellStyleTop(

                                    aCellPos.mnCol, aCellPos.mnRow,

                                    impGetLineStyle(rTableLayouter, aCellPos.mnCol, aCellPos.mnRow,

                                                    true, nColCount, nRowCount, bIsRTL));

                                aArray.SetCellStyleBottom(

                                    aCellPos.mnCol, aCellPos.mnRow,

                                    impGetLineStyle(rTableLayouter, aCellPos.mnCol, nNextRow, true,

                                                    nColCount, nRowCount, bIsRTL));

                                // ignore merged cells (all except the top-left of a merged cell)

                                if(!xCurrentCell->isMerged())

                                {

                                    // check if we are the top-left of a merged cell

                                    const sal_Int32 nXSpan(xCurrentCell->getColumnSpan());

                                    const sal_Int32 nYSpan(xCurrentCell->getRowSpan());

                                    if(nXSpan > 1 || nYSpan > 1)

                                    {

                                        // if merged, set so at CellBorderArray for primitive creation

                                        aArray.SetMergedRange(aCellPos.mnCol, aCellPos.mnRow, aCellPos.mnCol + nXSpan - 1, aCellPos.mnRow + nYSpan - 1);

                                    }

                                }

                            }

                            if(xCurrentCell.is() && !xCurrentCell->isMerged())

                            {

                                if(rTableLayouter.getCellArea(xCurrentCell, aCellPos, aCellArea))

                                {

                                    // create cell transformation matrix

                                    basegfx::B2DHomMatrix aCellMatrix;

                                    aCellMatrix.set(0, 0, static_cast<double>(aCellArea.getWidth()));

                                    aCellMatrix.set(1, 1, static_cast<double>(aCellArea.getHeight()));

                                    aCellMatrix.set(0, 2, static_cast<double>(aCellArea.getMinX()) + aObjectRange.getMinX());

                                    aCellMatrix.set(1, 2, static_cast<double>(aCellArea.getMinY()) + aObjectRange.getMinY());

                                    // handle cell fillings and text

                                    const SfxItemSet& rCellItemSet = xCurrentCell->GetItemSet();

                                    const sal_uInt32 nTextIndex(nColCount * aCellPos.mnRow + aCellPos.mnCol);

                                    const SdrText* pSdrText = rTableObj.getText(nTextIndex);

                                    drawinglayer::attribute::SdrFillTextAttribute aAttribute;

                                    if(pSdrText)

                                    {

                                        // #i101508# take cell's local text frame distances into account

                                        const sal_Int32 nLeft(xCurrentCell->GetTextLeftDistance());

                                        const sal_Int32 nRight(xCurrentCell->GetTextRightDistance());

                                        const sal_Int32 nUpper(xCurrentCell->GetTextUpperDistance());

                                        const sal_Int32 nLower(xCurrentCell->GetTextLowerDistance());

                                        aAttribute = drawinglayer::primitive2d::createNewSdrFillTextAttribute(

                                            rCellItemSet,

                                            pSdrText,

                                            &nLeft,

                                            &nUpper,

                                            &nRight,

                                            &nLower);

                                    }

                                    else

                                    {

                                        aAttribute = drawinglayer::primitive2d::createNewSdrFillTextAttribute(

                                            rCellItemSet,

                                            pSdrText);

                                    }

                                    // always create cell primitives for BoundRect and HitTest

                                    {

                                        const drawinglayer::primitive2d::Primitive2DReference xCellReference(

                                            new drawinglayer::primitive2d::SdrCellPrimitive2D(

                                                aCellMatrix, aAttribute));

                                        cell.append(xCellReference);

                                    }

                                    // Create cell primitive without text.

                                    aAttribute

                                        = drawinglayer::primitive2d::createNewSdrFillTextAttribute(

                                            rCellItemSet, nullptr);

                                    rtl::Reference pCellReference

                                        = new drawinglayer::primitive2d::SdrCellPrimitive2D(

                                            aCellMatrix, aAttribute);

                                    sal_uInt16 nTransparence(

                                        rCellItemSet.Get(XATTR_FILLTRANSPARENCE).GetValue());

                                    if (nTransparence != 0)

                                    {

                                        pCellReference->setTransparenceForShadow(nTransparence);

                                    }

                                    const drawinglayer::primitive2d::Primitive2DReference

                                        xCellReference(pCellReference);

                                    aRetvalForShadow.append(xCellReference);

                                }

                            }

                            if (isTaggedPDF && pPage)

                            {

                                // heuristic: if there's a special formatting on

                                // first row, assume that it's a header row

                                auto const eType(

                                   aCellPos.mnRow == 0 && rTableObj.getTableStyleSettings().mbUseFirstRow

                                       ? vcl::pdf::StructElement::TableHeader

                                       : vcl::pdf::StructElement::TableData);

                                cell = drawinglayer::primitive2d::Primitive2DContainer {

                                    new drawinglayer::primitive2d::StructureTagPrimitive2D(

                                        eType,

                                        pPage->IsMasterPage(),

                                        false,

                                        false,

                                        std::move(cell)) };

                            }

                            row.append(cell);

                        }

                        if (isTaggedPDF && pPage)

                        {

                            row = drawinglayer::primitive2d::Primitive2DContainer {

                                new drawinglayer::primitive2d::StructureTagPrimitive2D(

                                    vcl::pdf::StructElement::TableRow,

                                    pPage->IsMasterPage(),

                                    false,

                                    false,

                                    std::move(row)) };

                        }

                        aRetval.append(row);

                    }

                    // now create all CellBorderPrimitives

                    drawinglayer::primitive2d::Primitive2DContainer aCellBorderPrimitives(aArray.CreateB2DPrimitiveArray());

                    if(!aCellBorderPrimitives.empty())

                    {

                        // this is already scaled (due to Table in non-uniform coordinates), so

                        // first transform removing scale

                        basegfx::B2DHomMatrix aTransform(

                            basegfx::utils::createScaleB2DHomMatrix(

                                1.0 / aObjectRange.getWidth(),

                                1.0 / aObjectRange.getHeight()));

                        // If RTL, mirror the whole unified table in X and move right.

                        // This is much easier than taking this into account for the whole

                        // index calculations

                        if(bIsRTL)

                        {

                            aTransform.scale(-1.0, 1.0);

                            aTransform.translate(1.0, 0.0);

                        }

                        // create object matrix

                        const GeoStat& rGeoStat(rTableObj.GetGeoStat());

                        const double fShearX(-rGeoStat.mfTanShearAngle);

                        const double fRotate(rGeoStat.m_nRotationAngle ? toRadians(36000_deg100 - rGeoStat.m_nRotationAngle) : 0.0);

                        const basegfx::B2DHomMatrix aObjectMatrix(basegfx::utils::createScaleShearXRotateTranslateB2DHomMatrix(

                            aObjectRange.getWidth(), aObjectRange.getHeight(), fShearX, fRotate,

                            aObjectRange.getMinX(), aObjectRange.getMinY()));

                        // add object matrix to transform. By doing so theoretically

                        // CellBorders could be also rotated/sheared for the first time ever.

                        // To completely make that work, the primitives already created in

                        // aRetval would also have to be based on ObjectMatrix, not only on

                        // ObjectRange as it currently is.

                        aTransform *= aObjectMatrix;

                        // create a transform primitive with this and embed CellBorders

                        // and append to retval

                        aRetval.append(

                            new drawinglayer::primitive2d::TransformPrimitive2D(

                                aTransform,

                                drawinglayer::primitive2d::Primitive2DContainer(aCellBorderPrimitives)));

                        // Borders are always the same for shadow as well.

                        aRetvalForShadow.append(new drawinglayer::primitive2d::TransformPrimitive2D(

                            aTransform, std::move(aCellBorderPrimitives)));

                    }

                    if(!aRetval.empty())

                    {

                        // check and create evtl. shadow for created content

                        const SfxItemSet& rObjectItemSet = rTableObj.GetMergedItemSet();

                        const drawinglayer::attribute::SdrShadowAttribute aNewShadowAttribute(

                            drawinglayer::primitive2d::createNewSdrShadowAttribute(rObjectItemSet));

                        if(!aNewShadowAttribute.isDefault())

                        {

                            // pass in table's transform and scale matrix, to

                            // correctly scale and align shadows

                            const basegfx::B2DHomMatrix aTransformScaleMatrix

                                    = basegfx::utils::createScaleTranslateB2DHomMatrix(

                                        aObjectRange.getRange(), aObjectRange.getMinimum());

                            bool bDirectShadow

                                    = rObjectItemSet.Get(SDRATTR_SHADOW, /*bSrchInParent=*/false)

                                    .GetValue();

                            if (bDirectShadow)

                            {

                                // Shadow as direct formatting: no shadow for text, to be compatible

                                // with PowerPoint.

                                aRetval = drawinglayer::primitive2d::createEmbeddedShadowPrimitive(

                                    std::move(aRetval), aNewShadowAttribute, aTransformScaleMatrix,

                                    &aRetvalForShadow);

                            }

                            else

                            {

                                // Shadow as style: shadow for text, to be backwards-compatible.

                                aRetval = drawinglayer::primitive2d::createEmbeddedShadowPrimitive(

                                    std::move(aRetval), aNewShadowAttribute, aTransformScaleMatrix);

                            }

                        }

                    }

                }

                rVisitor.visit(std::move(aRetval));

            }

            else

            {

                // take unrotated snap rect (direct model data) for position and size

                const basegfx::B2DRange aObjectRange = vcl::unotools::b2DRectangleFromRectangle(rTableObj.GetGeoRect());

                // create object matrix

                const GeoStat& rGeoStat(rTableObj.GetGeoStat());

                const double fShearX(-rGeoStat.mfTanShearAngle);

                const double fRotate(rGeoStat.m_nRotationAngle ? toRadians(36000_deg100 - rGeoStat.m_nRotationAngle) : 0.0);

                const basegfx::B2DHomMatrix aObjectMatrix(basegfx::utils::createScaleShearXRotateTranslateB2DHomMatrix(

                    aObjectRange.getWidth(), aObjectRange.getHeight(), fShearX, fRotate,

                    aObjectRange.getMinX(), aObjectRange.getMinY()));

                // created an invisible outline for the cases where no visible content exists

                const drawinglayer::primitive2d::Primitive2DReference xReference(

                    drawinglayer::primitive2d::createHiddenGeometryPrimitives2D(

                        aObjectMatrix));

                rVisitor.visit(xReference);

            }

        }

        void ViewObjectContactOfTableObj::createPrimitive2DSequence(

                DisplayInfo const& rDisplayInfo,

                drawinglayer::primitive2d::Primitive2DDecompositionVisitor& rVisitor) const

        {

            bool const isTaggedPDF(GetObjectContact().isExportTaggedPDF());

            if (isTaggedPDF)

            {

                // this will be unbuffered and contain structure tags

                const sdr::table::SdrTableObj& rTableObj =

                    static_cast<const sdr::table::SdrTableObj&>(*GetViewContact().TryToGetSdrObject());

                return createPrimitive2DSequenceImpl(rTableObj, true, rVisitor);

            }

            else

            {

                // call it via the base class - this is supposed to be buffered

                return sdr::contact::ViewObjectContactOfSdrObj::createPrimitive2DSequence(rDisplayInfo, rVisitor);

            }

        }

        void ViewContactOfTableObj::createViewIndependentPrimitive2DSequence(

                drawinglayer::primitive2d::Primitive2DDecompositionVisitor& rVisitor) const

        {

            const sdr::table::SdrTableObj& rTableObj =

                static_cast<const sdr::table::SdrTableObj&>(GetSdrObject());

            return createPrimitive2DSequenceImpl(rTableObj, false, rVisitor);

        }

        ViewObjectContact& ViewContactOfTableObj::CreateObjectSpecificViewObjectContact(ObjectContact& rObjectContact)

        {

            return *new ViewObjectContactOfTableObj(rObjectContact, *this);

        }

        ViewContactOfTableObj::ViewContactOfTableObj(sdr::table::SdrTableObj& rTableObj)

        :   ViewContactOfSdrObj(rTableObj)

        {

        }

        ViewContactOfTableObj::~ViewContactOfTableObj()

        {

        }

} // end of namespace

/* vim:set shiftwidth=4 softtabstop=4 expandtab: */