/* -*- 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 <com/sun/star/text/WritingMode.hpp>

#include <com/sun/star/drawing/TextHorizontalAdjust.hpp>

#include <drawingml/textbodyproperties.hxx>

#include <oox/token/properties.hxx>

#include <oox/token/tokens.hxx>

#include <tools/gen.hxx>

#include <svx/svdobj.hxx>

#include <svx/svdotext.hxx>

#include <svx/svdoashp.hxx>

#include <svx/sdtditm.hxx>

#include <array>

using namespace ::com::sun::star::drawing;

using namespace ::com::sun::star::text;

using namespace css;

namespace oox::drawingml {

TextBodyProperties::TextBodyProperties()

    : mbAnchorCtr(false)

    , meVA( TextVerticalAdjust_TOP )

{

}

/* For Legacy purposes: TODO: Check if it is required at all! */

void TextBodyProperties::pushVertSimulation()

{

    sal_Int32 tVert = moVert.value_or( XML_horz );

    if( !(tVert == XML_vert || tVert == XML_eaVert || tVert == XML_vert270 || tVert == XML_mongolianVert) )

        return;

    // #160799# fake different vertical text modes by top-bottom writing mode

    maPropertyMap.setProperty( PROP_TextWritingMode, WritingMode_TB_RL);

    // workaround for TB_LR as using WritingMode2 doesn't work

    if( meVA != TextVerticalAdjust_CENTER )

        maPropertyMap.setProperty( PROP_TextHorizontalAdjust,

                            (tVert == XML_vert270) ? TextHorizontalAdjust_RIGHT : TextHorizontalAdjust_LEFT);

    if( tVert == XML_vert270 )

        maPropertyMap.setProperty( PROP_TextVerticalAdjust, TextVerticalAdjust_BOTTOM);

    if( ( tVert == XML_vert && meVA == TextVerticalAdjust_TOP ) ||

        ( tVert == XML_vert270 && meVA == TextVerticalAdjust_BOTTOM ) )

        maPropertyMap.setProperty( PROP_TextHorizontalAdjust, TextHorizontalAdjust_RIGHT);

    else if( meVA == TextVerticalAdjust_CENTER )

        maPropertyMap.setProperty( PROP_TextHorizontalAdjust, TextHorizontalAdjust_CENTER);

}

/* Push text distances / insets, taking into consideration text rotation */

void TextBodyProperties::pushTextDistances(Size const& rTextAreaSize)

{

    for (auto & rValue : maTextDistanceValues)

        rValue.reset();

    sal_Int32 nOff = 0;

    static constexpr auto aProps = std::to_array<sal_Int32>({

        PROP_TextLeftDistance,

        PROP_TextUpperDistance,

        PROP_TextRightDistance,

        PROP_TextLowerDistance

    });

    switch (moTextPreRotation.value_or(0))

    {

        case 90*1*60000: nOff = 3; break;

        case 90*2*60000: nOff = 2; break;

        case 90*3*60000: nOff = 1; break;

        default: break;

    }

    if (moVert && (moVert.value() == XML_eaVert || moVert.value() == XML_vert))

        nOff = (nOff + 3) % aProps.size();

    else if (moVert && moVert.value() == XML_vert270)

        nOff = (nOff + 1) % aProps.size();

    for (size_t i = 0; i < aProps.size(); i++)

    {

        sal_Int32 nVal = 0;

        // Hack for n#760986

        // TODO: Preferred method would be to have a textbox on top

        // of the shape and the place it according to the (off,ext)

        if (nOff == 0 && moTextOffLeft)

            nVal = *moTextOffLeft;

        if (nOff == 1 && moTextOffUpper)

            nVal = *moTextOffUpper;

        if (nOff == 2 && moTextOffRight)

            nVal = *moTextOffRight;

        if (nOff == 3 && moTextOffLower)

            nVal = *moTextOffLower;

        sal_Int32 nTextOffsetValue = nVal;

        if (moInsets[i])

        {

            nTextOffsetValue = *moInsets[i] + nVal;

        }

        // if inset is set, then always set the value

        // this prevents the default to be set (0 is a valid value)

        if (moInsets[i] || nTextOffsetValue)

        {

            maTextDistanceValues[nOff] = nTextOffsetValue;

        }

        nOff = (nOff + 1) % aProps.size();

    }

    // Check if left and right are set

    if (maTextDistanceValues[0] && maTextDistanceValues[2])

    {

        double nWidth = rTextAreaSize.getWidth();

        double nLeft = *maTextDistanceValues[0];

        double nRight = *maTextDistanceValues[2];

        // Check if left + right is more than text area width.

        // If yes, we need to adjust the values as defined in OOXML.

        // (Overload zero width to mean don't adjust)

        if (nWidth > 0 && nLeft + nRight >= nWidth)

        {

            double diffFactor = (nLeft + nRight - nWidth) / 2.0;

            maTextDistanceValues[0] = nLeft - diffFactor;

            maTextDistanceValues[2] = nRight - diffFactor;

        }

    }

    // Check if bottom and top are set

    if (maTextDistanceValues[1] && maTextDistanceValues[3])

    {

        double nHeight = rTextAreaSize.getHeight();

        double nTop = *maTextDistanceValues[1];

        double nBottom = *maTextDistanceValues[3];

        // Check if top + bottom is more than text area height.

        // If yes, we need to adjust the values as defined in OOXML.

        // (Overload zero height to mean don't adjust)

        if (nHeight > 0 && nTop + nBottom >= nHeight)

        {

            double diffFactor = (nTop + nBottom - nHeight) / 2.0;

            maTextDistanceValues[1] = nTop - diffFactor;

            maTextDistanceValues[3] = nBottom - diffFactor;

        }

    }

    for (size_t i = 0; i < aProps.size(); i++)

    {

        if (maTextDistanceValues[i])

            maPropertyMap.setProperty(aProps[i], *maTextDistanceValues[i]);

    }

}

/* Readjust the text distances / insets if necessary to take

   the text area into account, not just the shape area*/

void TextBodyProperties::readjustTextDistances(uno::Reference<drawing::XShape> const& xShape)

{

    // Only for custom shapes (for now)

    auto* pCustomShape = dynamic_cast<SdrObjCustomShape*>(SdrObject::getSdrObjectFromXShape(xShape));

    if (pCustomShape)

    {

        sal_Int32 nLower = pCustomShape->GetTextLowerDistance();

        sal_Int32 nUpper = pCustomShape->GetTextUpperDistance();

        pCustomShape->SetMergedItem(makeSdrTextUpperDistItem(0));

        pCustomShape->SetMergedItem(makeSdrTextLowerDistItem(0));

        tools::Rectangle aAnchorRect;

        pCustomShape->TakeTextAnchorRect(aAnchorRect);

        Size aAnchorSize = aAnchorRect.GetSize();

        pushTextDistances(aAnchorSize);

        if (maTextDistanceValues[1] && maTextDistanceValues[3])

        {

            nLower = *maTextDistanceValues[3];

            nUpper = *maTextDistanceValues[1];

        }

        pCustomShape->SetMergedItem(makeSdrTextLowerDistItem(nLower));

        pCustomShape->SetMergedItem(makeSdrTextUpperDistItem(nUpper));

    }

}

} // namespace oox::drawingml

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