/* -*- 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 <optional>

#include <svx/svdoutl.hxx>

#include <editeng/outliner.hxx>

#include <svx/svdmodel.hxx>

#include <svx/svdotext.hxx>

#include <svx/svdpage.hxx>

#include <editeng/editstat.hxx>

#include <svl/itempool.hxx>

#include <editeng/editview.hxx>

#include <editeng/editeng.hxx>

#include <drawinglayer/primitive2d/textlayoutdevice.hxx>

SdrOutliner::SdrOutliner( SfxItemPool* pItemPool, OutlinerMode nMode )

:   Outliner( pItemPool, nMode ),

    mpVisualizedPage(nullptr)

{

}

SdrOutliner::~SdrOutliner()

{

}

void SdrOutliner::SetTextObj( const SdrTextObj* pObj )

{

    if( pObj && pObj != mxWeakTextObj.get().get() )

    {

        SetUpdateLayout(false);

        OutlinerMode nOutlinerMode2 = OutlinerMode::OutlineObject;

        if ( !pObj->IsOutlText() )

            nOutlinerMode2 = OutlinerMode::TextObject;

        Init( nOutlinerMode2 );

        resetScalingParameters();

        EEControlBits nStat = GetControlWord();

        nStat &= ~EEControlBits( EEControlBits::STRETCHING | EEControlBits::AUTOPAGESIZE );

        SetControlWord(nStat);

        Size aMaxSize( 100000,100000 );

        SetMinAutoPaperSize( Size() );

        SetMaxAutoPaperSize( aMaxSize );

        SetPaperSize( aMaxSize );

        SetTextColumns(pObj->GetTextColumnsNumber(), pObj->GetTextColumnsSpacing());

        ClearPolygon();

        if (pObj->GetTextEditOutliner())

            SetBackgroundColor(pObj->GetTextEditOutliner()->GetEditEngine().GetBackgroundColor());

    }

    mxWeakTextObj = const_cast< SdrTextObj* >(pObj);

}

void SdrOutliner::SetTextObjNoInit( const SdrTextObj* pObj )

{

    mxWeakTextObj = const_cast< SdrTextObj* >(pObj);

}

OUString SdrOutliner::CalcFieldValue(const SvxFieldItem& rField, sal_Int32 nPara, sal_Int32 nPos,

                                     std::optional<Color>& rpTxtColor, std::optional<Color>& rpFldColor,

                                     std::optional<FontLineStyle>& rpFldLineStyle)

{

    bool bOk = false;

    OUString aRet;

    if(auto pTextObj = mxWeakTextObj.get())

        bOk = pTextObj->CalcFieldValue(rField, nPara, nPos, false, rpTxtColor, rpFldColor, rpFldLineStyle, aRet);

    if (!bOk)

        aRet = Outliner::CalcFieldValue(rField, nPara, nPos, rpTxtColor, rpFldColor, rpFldLineStyle);

    return aRet;

}

const SdrTextObj* SdrOutliner::GetTextObj() const

{

    return mxWeakTextObj.get().get();

}

bool SdrOutliner::hasEditViewCallbacks() const

{

    for (size_t a(0); a < GetViewCount(); a++)

    {

        OutlinerView* pOutlinerView = GetView(a);

        if (pOutlinerView && pOutlinerView->GetEditView().getEditViewCallbacks())

        {

            return true;

        }

    }

    return false;

}

std::optional<bool> SdrOutliner::GetCompatFlag(SdrCompatibilityFlag eFlag) const

{

    if( mpVisualizedPage )

    {

        return {mpVisualizedPage->getSdrModelFromSdrPage().GetCompatibilityFlag(eFlag)};

    }

    return {};

}

void TextHierarchyBreakupBlockText::processDrawPortionInfo(const DrawPortionInfo& rDrawPortionInfo)

{

    // Is clipping wanted? This is text clipping; only accept a portion

    // if it's completely in the range

    if(!mrClipRange.isEmpty())

    {

        // Test start position first; this allows to not get the text range at

        // all if text is far outside

        const basegfx::B2DPoint aStartPosition(rDrawPortionInfo.mrStartPos.X(), rDrawPortionInfo.mrStartPos.Y());

        if(!mrClipRange.isInside(aStartPosition))

        {

            return;

        }

        // Start position is inside. Get TextBoundRect and TopLeft next

        drawinglayer::primitive2d::TextLayouterDevice aTextLayouterDevice;

        aTextLayouterDevice.setFont(rDrawPortionInfo.mrFont);

        const basegfx::B2DRange aTextBoundRect(

            aTextLayouterDevice.getTextBoundRect(

                rDrawPortionInfo.maText, rDrawPortionInfo.mnTextStart, rDrawPortionInfo.mnTextLen));

        const basegfx::B2DPoint aTopLeft(aTextBoundRect.getMinimum() + aStartPosition);

        if(!mrClipRange.isInside(aTopLeft))

        {

            return;

        }

        // TopLeft is inside. Get BottomRight and check

        const basegfx::B2DPoint aBottomRight(aTextBoundRect.getMaximum() + aStartPosition);

        if(!mrClipRange.isInside(aBottomRight))

        {

            return;

        }

        // all inside, clip was successful

    }

    TextHierarchyBreakupOutliner::processDrawPortionInfo(rDrawPortionInfo);

}

TextHierarchyBreakupBlockText::TextHierarchyBreakupBlockText(

    SdrOutliner& rOutliner,

    const basegfx::B2DHomMatrix& rNewTransformA,

    const basegfx::B2DHomMatrix& rNewTransformB,

    const basegfx::B2DRange& rClipRange)

: TextHierarchyBreakupOutliner(

    rOutliner,

    rNewTransformA,

    rNewTransformB)

, mrClipRange(rClipRange)

{

}

void TextHierarchyBreakupContourText::processDrawPortionInfo(const DrawPortionInfo& rDrawPortionInfo)

    {

        // for contour text, ignore (clip away) all portions which are below

        // the visible area given by maScale

        if(static_cast<double>(rDrawPortionInfo.mrStartPos.Y()) < maScale.getY())

        {

            TextHierarchyBreakupOutliner::processDrawPortionInfo(rDrawPortionInfo);

        }

    }

TextHierarchyBreakupContourText::TextHierarchyBreakupContourText(

    SdrOutliner& rOutliner,

    const basegfx::B2DHomMatrix& rNewTransformA,

    const basegfx::B2DHomMatrix& rNewTransformB,

    const basegfx::B2DVector& rScale)

: TextHierarchyBreakupOutliner(

    rOutliner,

    rNewTransformA,

    rNewTransformB)

, maScale(rScale)

{

}

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