/* -*- 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 <primitive2d/textstrikeoutprimitive2d.hxx>

#include <drawinglayer/primitive2d/textlayoutdevice.hxx>

#include <drawinglayer/primitive2d/textprimitive2d.hxx>

#include <drawinglayer/primitive2d/drawinglayer_primitivetypes2d.hxx>

#include <basegfx/polygon/b2dpolygon.hxx>

#include <basegfx/matrix/b2dhommatrixtools.hxx>

#include <drawinglayer/attribute/lineattribute.hxx>

#include <drawinglayer/primitive2d/PolygonStrokePrimitive2D.hxx>

#include <drawinglayer/primitive2d/transformprimitive2d.hxx>

#include <osl/diagnose.h>

#include <rtl/ustrbuf.hxx>

#include <utility>

namespace drawinglayer::primitive2d

{

        BaseTextStrikeoutPrimitive2D::BaseTextStrikeoutPrimitive2D(

            basegfx::B2DHomMatrix aObjectTransformation,

            double fWidth,

            const basegfx::BColor& rFontColor)

        :   maObjectTransformation(std::move(aObjectTransformation)),

            mfWidth(fWidth),

            maFontColor(rFontColor)

        {

        }

        bool BaseTextStrikeoutPrimitive2D::operator==( const BasePrimitive2D& rPrimitive ) const

        {

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

            {

                const BaseTextStrikeoutPrimitive2D& rCompare = static_cast<const BaseTextStrikeoutPrimitive2D&>(rPrimitive);

                return (getObjectTransformation() == rCompare.getObjectTransformation()

                    && getWidth() == rCompare.getWidth()

                    && getFontColor() == rCompare.getFontColor());

            }

            return false;

        }

        Primitive2DReference TextCharacterStrikeoutPrimitive2D::create2DDecomposition(const geometry::ViewInformation2D& /*rViewInformation*/) const

        {

            // strikeout with character

            const OUString aSingleCharString(getStrikeoutChar());

            basegfx::B2DVector aScale, aTranslate;

            double fRotate, fShearX;

            // get decomposition

            getObjectTransformation().decompose(aScale, aTranslate, fRotate, fShearX);

            // prepare TextLayouter

            TextLayouterDevice aTextLayouter;

            aTextLayouter.setFontAttribute(

                getFontAttribute(),

                aScale.getX(),

                aScale.getY(),

                getLocale());

            const double fStrikeCharWidth(aTextLayouter.getTextWidth(aSingleCharString, 0, 1));

            const double fStrikeCharCount(fabs(getWidth()/fStrikeCharWidth));

            const sal_uInt32 nStrikeCharCount(static_cast< sal_uInt32 >(fStrikeCharCount + 0.5));

            std::vector<double> aDXArray(nStrikeCharCount);

            OUStringBuffer aStrikeoutString;

            for(sal_uInt32 a(0); a < nStrikeCharCount; a++)

            {

                aStrikeoutString.append(aSingleCharString);

                aDXArray[a] = (a + 1) * fStrikeCharWidth;

            }

            auto len = aStrikeoutString.getLength();

            return

                new TextSimplePortionPrimitive2D(

                    getObjectTransformation(),

                    aStrikeoutString.makeStringAndClear(),

                    0,

                    len,

                    std::move(aDXArray),

                    {},

                    getFontAttribute(),

                    getLocale(),

                    getFontColor());

        }

        TextCharacterStrikeoutPrimitive2D::TextCharacterStrikeoutPrimitive2D(

            const basegfx::B2DHomMatrix& rObjectTransformation,

            double fWidth,

            const basegfx::BColor& rFontColor,

            sal_Unicode aStrikeoutChar,

            attribute::FontAttribute aFontAttribute,

            css::lang::Locale aLocale)

        :   BaseTextStrikeoutPrimitive2D(rObjectTransformation, fWidth, rFontColor),

            maStrikeoutChar(aStrikeoutChar),

            maFontAttribute(std::move(aFontAttribute)),

            maLocale(std::move(aLocale))

        {

        }

        bool TextCharacterStrikeoutPrimitive2D::operator==( const BasePrimitive2D& rPrimitive ) const

        {

            if(BaseTextStrikeoutPrimitive2D::operator==(rPrimitive))

            {

                const TextCharacterStrikeoutPrimitive2D& rCompare = static_cast<const TextCharacterStrikeoutPrimitive2D&>(rPrimitive);

                return (getStrikeoutChar() == rCompare.getStrikeoutChar()

                    && getFontAttribute() == rCompare.getFontAttribute()

                    && LocalesAreEqual(getLocale(), rCompare.getLocale()));

            }

            return false;

        }

        // provide unique ID

        sal_uInt32 TextCharacterStrikeoutPrimitive2D::getPrimitive2DID() const

        {

            return PRIMITIVE2D_ID_TEXTCHARACTERSTRIKEOUTPRIMITIVE2D;

        }

        Primitive2DReference TextGeometryStrikeoutPrimitive2D::create2DDecomposition(const geometry::ViewInformation2D& /*rViewInformation*/) const

        {

            OSL_ENSURE(TEXT_STRIKEOUT_SLASH != getTextStrikeout() && TEXT_STRIKEOUT_X != getTextStrikeout(),

                "Wrong TEXT_STRIKEOUT type; a TextCharacterStrikeoutPrimitive2D should be used (!)");

            // strikeout with geometry

            double fStrikeoutHeight(getHeight());

            double fStrikeoutOffset(getOffset());

            bool bDoubleLine(false);

            // get decomposition

            basegfx::B2DVector aScale, aTranslate;

            double fRotate, fShearX;

            getObjectTransformation().decompose(aScale, aTranslate, fRotate, fShearX);

            // set line attribute

            switch(getTextStrikeout())

            {

                default : // case primitive2d::TEXT_STRIKEOUT_SINGLE:

                {

                    break;

                }

                case primitive2d::TEXT_STRIKEOUT_DOUBLE:

                {

                    bDoubleLine = true;

                    break;

                }

                case primitive2d::TEXT_STRIKEOUT_BOLD:

                {

                    fStrikeoutHeight *= 2.0;

                    break;

                }

            }

            if(bDoubleLine)

            {

                fStrikeoutOffset -= 0.50 * fStrikeoutHeight;

                fStrikeoutHeight *= 0.64;

            }

            // create base polygon and new primitive

            basegfx::B2DPolygon aStrikeoutLine;

            aStrikeoutLine.append(basegfx::B2DPoint(0.0, -fStrikeoutOffset));

            aStrikeoutLine.append(basegfx::B2DPoint(getWidth(), -fStrikeoutOffset));

            const basegfx::B2DHomMatrix aUnscaledTransform(

                basegfx::utils::createShearXRotateTranslateB2DHomMatrix(

                    fShearX, fRotate, aTranslate));

            aStrikeoutLine.transform(aUnscaledTransform);

            // add primitive

            const attribute::LineAttribute aLineAttribute(getFontColor(), fStrikeoutHeight, basegfx::B2DLineJoin::NONE);

            Primitive2DReference xRetval = new PolygonStrokePrimitive2D(std::move(aStrikeoutLine), aLineAttribute);

            if(bDoubleLine)

            {

                // double line, create 2nd primitive with offset using TransformPrimitive based on

                // already created NewPrimitive

                const double fLineDist(2.0 * fStrikeoutHeight);

                // move base point of text to 0.0 and de-rotate

                basegfx::B2DHomMatrix aTransform(basegfx::utils::createTranslateB2DHomMatrix(

                    -aTranslate.getX(), -aTranslate.getY()));

                aTransform.rotate(-fRotate);

                // translate in Y by offset

                aTransform.translate(0.0, -fLineDist);

                // move back and rotate

                aTransform.rotate(fRotate);

                aTransform.translate(aTranslate.getX(), aTranslate.getY());

                // add original and transform primitive to a GroupPrimitive2D

                xRetval = new GroupPrimitive2D({

                    xRetval, new TransformPrimitive2D(

                        aTransform,

                        Primitive2DContainer{xRetval}) });

            }

            return xRetval;

        }

        TextGeometryStrikeoutPrimitive2D::TextGeometryStrikeoutPrimitive2D(

            const basegfx::B2DHomMatrix& rObjectTransformation,

            double fWidth,

            const basegfx::BColor& rFontColor,

            double fHeight,

            double fOffset,

            TextStrikeout eTextStrikeout)

        :   BaseTextStrikeoutPrimitive2D(rObjectTransformation, fWidth, rFontColor),

            mfHeight(fHeight),

            mfOffset(fOffset),

            meTextStrikeout(eTextStrikeout)

        {

        }

        bool TextGeometryStrikeoutPrimitive2D::operator==( const BasePrimitive2D& rPrimitive ) const

        {

            if(BaseTextStrikeoutPrimitive2D::operator==(rPrimitive))

            {

                const TextGeometryStrikeoutPrimitive2D& rCompare = static_cast<const TextGeometryStrikeoutPrimitive2D&>(rPrimitive);

                return (getHeight() == rCompare.getHeight()

                    && getOffset() == rCompare.getOffset()

                    && getTextStrikeout() == rCompare.getTextStrikeout());

            }

            return false;

        }

        // provide unique ID

        sal_uInt32 TextGeometryStrikeoutPrimitive2D::getPrimitive2DID() const

        {

            return PRIMITIVE2D_ID_TEXTGEOMETRYSTRIKEOUTPRIMITIVE2D;

        }

} // end of namespace

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