/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */

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 * This file incorporates work covered by the following license notice:

 *

 *   Licensed to the Apache Software Foundation (ASF) under one or more

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 *   ownership. The ASF licenses this file to you under the Apache

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#include <primitive2d/texteffectprimitive2d.hxx>

#include <drawinglayer/geometry/viewinformation2d.hxx>

#include <drawinglayer/primitive2d/modifiedcolorprimitive2d.hxx>

#include <drawinglayer/primitive2d/transformprimitive2d.hxx>

#include <drawinglayer/primitive2d/drawinglayer_primitivetypes2d.hxx>

#include <basegfx/matrix/b2dhommatrixtools.hxx>

namespace drawinglayer::primitive2d

{

const double fDiscreteSize(1.1);

Primitive2DReference TextEffectPrimitive2D::create2DDecomposition(

    const geometry::ViewInformation2D& rViewInformation) const

{

    // get the distance of one discrete units from target display. Use between 1.0 and sqrt(2) to

    // have good results on rotated objects, too

    const basegfx::B2DVector aDistance(rViewInformation.getInverseObjectToViewTransformation()

                                       * basegfx::B2DVector(fDiscreteSize, fDiscreteSize));

    const basegfx::B2DVector aDiagonalDistance(aDistance * (1.0 / 1.44));

    Primitive2DContainer aContainer;

    switch (getTextEffectStyle2D())

    {

        case TextEffectStyle2D::ReliefEmbossed:

        case TextEffectStyle2D::ReliefEmbossedDefault:

        case TextEffectStyle2D::ReliefEngravedDefault:

        {

            // prepare transform of sub-group back to (0,0) and align to X-Axis

            basegfx::B2DHomMatrix aBackTransform(basegfx::utils::createTranslateB2DHomMatrix(

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

            aBackTransform.rotate(-getDirection());

            // prepare transform of sub-group back to its position and rotation

            basegfx::B2DHomMatrix aForwardTransform(

                basegfx::utils::createRotateB2DHomMatrix(getDirection()));

            aForwardTransform.translate(getRotationCenter().getX(), getRotationCenter().getY());

            // create transformation for one discrete unit

            const bool bEmbossed(TextEffectStyle2D::ReliefEmbossed == getTextEffectStyle2D()

                                 || TextEffectStyle2D::ReliefEmbossedDefault

                                        == getTextEffectStyle2D());

            const bool bDefaultTextColor(

                TextEffectStyle2D::ReliefEmbossedDefault == getTextEffectStyle2D()

                || TextEffectStyle2D::ReliefEngravedDefault == getTextEffectStyle2D());

            basegfx::B2DHomMatrix aTransform(aBackTransform);

            if (bEmbossed)

            {

                // to bottom-right

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

            }

            else

            {

                // to top-left

                aTransform.translate(-aDiagonalDistance.getX(), -aDiagonalDistance.getY());

            }

            aTransform *= aForwardTransform;

            if (bDefaultTextColor)

            {

                // emboss/engrave in black, original forced to white

                const basegfx::BColorModifierSharedPtr aBColorModifierToGray

                    = std::make_shared<basegfx::BColorModifier_replace>(basegfx::BColor(0.0));

                const Primitive2DReference xModifiedColor(new ModifiedColorPrimitive2D(

                    Primitive2DContainer(getTextContent()), aBColorModifierToGray));

                aContainer.push_back(

                    new TransformPrimitive2D(aTransform, Primitive2DContainer{ xModifiedColor }));

                // add original, too

                const basegfx::BColorModifierSharedPtr aBColorModifierToWhite

                    = std::make_shared<basegfx::BColorModifier_replace>(basegfx::BColor(1.0));

                aContainer.push_back(new ModifiedColorPrimitive2D(

                    Primitive2DContainer(getTextContent()), aBColorModifierToWhite));

            }

            else

            {

                // emboss/engrave in gray, keep original's color

                const basegfx::BColorModifierSharedPtr aBColorModifierToGray

                    = std::make_shared<basegfx::BColorModifier_replace>(

                        basegfx::BColor(0.75)); // 192

                const Primitive2DReference xModifiedColor(new ModifiedColorPrimitive2D(

                    Primitive2DContainer(getTextContent()), aBColorModifierToGray));

                aContainer.push_back(

                    new TransformPrimitive2D(aTransform, Primitive2DContainer{ xModifiedColor }));

                // add original, too

                aContainer.push_back(new GroupPrimitive2D(Primitive2DContainer(getTextContent())));

            }

            break;

        }

        case TextEffectStyle2D::Outline:

        {

            // create transform primitives in all directions

            basegfx::B2DHomMatrix aTransform;

            aTransform.set(0, 2, aDistance.getX());

            aTransform.set(1, 2, 0.0);

            aContainer.push_back(

                new TransformPrimitive2D(aTransform, Primitive2DContainer(getTextContent())));

            aTransform.set(0, 2, aDiagonalDistance.getX());

            aTransform.set(1, 2, aDiagonalDistance.getY());

            aContainer.push_back(

                new TransformPrimitive2D(aTransform, Primitive2DContainer(getTextContent())));

            aTransform.set(0, 2, 0.0);

            aTransform.set(1, 2, aDistance.getY());

            aContainer.push_back(

                new TransformPrimitive2D(aTransform, Primitive2DContainer(getTextContent())));

            aTransform.set(0, 2, -aDiagonalDistance.getX());

            aTransform.set(1, 2, aDiagonalDistance.getY());

            aContainer.push_back(

                new TransformPrimitive2D(aTransform, Primitive2DContainer(getTextContent())));

            aTransform.set(0, 2, -aDistance.getX());

            aTransform.set(1, 2, 0.0);

            aContainer.push_back(

                new TransformPrimitive2D(aTransform, Primitive2DContainer(getTextContent())));

            aTransform.set(0, 2, -aDiagonalDistance.getX());

            aTransform.set(1, 2, -aDiagonalDistance.getY());

            aContainer.push_back(

                new TransformPrimitive2D(aTransform, Primitive2DContainer(getTextContent())));

            aTransform.set(0, 2, 0.0);

            aTransform.set(1, 2, -aDistance.getY());

            aContainer.push_back(

                new TransformPrimitive2D(aTransform, Primitive2DContainer(getTextContent())));

            aTransform.set(0, 2, aDiagonalDistance.getX());

            aTransform.set(1, 2, -aDiagonalDistance.getY());

            aContainer.push_back(

                new TransformPrimitive2D(aTransform, Primitive2DContainer(getTextContent())));

            // at last, place original over it, but force to white

            const basegfx::BColorModifierSharedPtr aBColorModifierToWhite

                = std::make_shared<basegfx::BColorModifier_replace>(basegfx::BColor(1.0, 1.0, 1.0));

            aContainer.push_back(new ModifiedColorPrimitive2D(

                Primitive2DContainer(getTextContent()), aBColorModifierToWhite));

            break;

        }

    }

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

}

TextEffectPrimitive2D::TextEffectPrimitive2D(Primitive2DContainer&& rTextContent,

                                             const basegfx::B2DPoint& rRotationCenter,

                                             double fDirection,

                                             TextEffectStyle2D eTextEffectStyle2D)

    : maTextContent(std::move(rTextContent))

    , maRotationCenter(rRotationCenter)

    , mfDirection(fDirection)

    , meTextEffectStyle2D(eTextEffectStyle2D)

{

}

bool TextEffectPrimitive2D::operator==(const BasePrimitive2D& rPrimitive) const

{

    if (BasePrimitive2D::operator==(rPrimitive))

    {

        const TextEffectPrimitive2D& rCompare

            = static_cast<const TextEffectPrimitive2D&>(rPrimitive);

        return (getTextContent() == rCompare.getTextContent()

                && getRotationCenter() == rCompare.getRotationCenter()

                && getDirection() == rCompare.getDirection()

                && getTextEffectStyle2D() == rCompare.getTextEffectStyle2D());

    }

    return false;

}

basegfx::B2DRange

TextEffectPrimitive2D::getB2DRange(const geometry::ViewInformation2D& rViewInformation) const

{

    // get range of content and grow by used fDiscreteSize. That way it is not necessary to ask

    // the whole decomposition for its ranges (which may be expensive with outline mode which

    // then will ask 9 times at nearly the same content. This may even be refined here using the

    // TextEffectStyle information, e.g. for TEXTEFFECTSTYLE2D_RELIEF the grow needs only to

    // be in two directions

    basegfx::B2DRange aRetval(getTextContent().getB2DRange(rViewInformation));

    aRetval.grow(fDiscreteSize);

    return aRetval;

}

void TextEffectPrimitive2D::get2DDecomposition(

    Primitive2DDecompositionVisitor& rVisitor,

    const geometry::ViewInformation2D& rViewInformation) const

{

    if (hasBuffered2DDecomposition())

    {

        if (maLastObjectToViewTransformation != rViewInformation.getObjectToViewTransformation())

        {

            // conditions of last local decomposition have changed, delete

            const_cast<TextEffectPrimitive2D*>(this)->setBuffered2DDecomposition(nullptr);

        }

    }

    if (!hasBuffered2DDecomposition())

    {

        // remember ViewRange and ViewTransformation

        const_cast<TextEffectPrimitive2D*>(this)->maLastObjectToViewTransformation

            = rViewInformation.getObjectToViewTransformation();

    }

    // use parent implementation

    BufferedDecompositionPrimitive2D::get2DDecomposition(rVisitor, rViewInformation);

}

// provide unique ID

sal_uInt32 TextEffectPrimitive2D::getPrimitive2DID() const

{

    return PRIMITIVE2D_ID_TEXTEFFECTPRIMITIVE2D;

}

} // end of namespace

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