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

/*

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 * 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 <drawinglayer/primitive2d/animatedprimitive2d.hxx>

#include <drawinglayer/animation/animationtiming.hxx>

#include <drawinglayer/primitive2d/transformprimitive2d.hxx>

#include <drawinglayer/geometry/viewinformation2d.hxx>

#include <drawinglayer/primitive2d/drawinglayer_primitivetypes2d.hxx>

using namespace com::sun::star;

namespace drawinglayer::primitive2d

{

        void AnimatedSwitchPrimitive2D::setAnimationEntry(const animation::AnimationEntry& rNew)

        {

            // clone given animation description

            mpAnimationEntry = rNew.clone();

        }

        AnimatedSwitchPrimitive2D::AnimatedSwitchPrimitive2D(

            const animation::AnimationEntry& rAnimationEntry,

            Primitive2DContainer&& aChildren,

            bool bIsTextAnimation)

        :   GroupPrimitive2D(std::move(aChildren)),

            mbIsTextAnimation(bIsTextAnimation)

        {

            // clone given animation description

            mpAnimationEntry = rAnimationEntry.clone();

        }

        AnimatedSwitchPrimitive2D::~AnimatedSwitchPrimitive2D()

        {

        }

        bool AnimatedSwitchPrimitive2D::operator==(const BasePrimitive2D& rPrimitive) const

        {

            if(GroupPrimitive2D::operator==(rPrimitive))

            {

                const AnimatedSwitchPrimitive2D& rCompare = static_cast< const AnimatedSwitchPrimitive2D& >(rPrimitive);

                return (getAnimationEntry() == rCompare.getAnimationEntry());

            }

            return false;

        }

        void AnimatedSwitchPrimitive2D::get2DDecomposition(Primitive2DDecompositionVisitor& rVisitor, const geometry::ViewInformation2D& rViewInformation) const

        {

            if(getChildren().empty())

                return;

            const double fState(getAnimationEntry().getStateAtTime(rViewInformation.getViewTime()));

            const sal_uInt32 nLen(getChildren().size());

            sal_uInt32 nIndex(basegfx::fround(fState * static_cast<double>(nLen)));

            if(nIndex >= nLen)

            {

                nIndex = nLen - 1;

            }

            rVisitor.visit(getChildren()[nIndex]);

        }

        // provide unique ID

        sal_uInt32 AnimatedSwitchPrimitive2D::getPrimitive2DID() const

        {

            return PRIMITIVE2D_ID_ANIMATEDSWITCHPRIMITIVE2D;

        }

} // end of namespace drawinglayer::primitive2d

namespace drawinglayer::primitive2d

{

        AnimatedBlinkPrimitive2D::AnimatedBlinkPrimitive2D(

            const animation::AnimationEntry& rAnimationEntry,

            Primitive2DContainer&& aChildren)

        :   AnimatedSwitchPrimitive2D(rAnimationEntry, std::move(aChildren), true/*bIsTextAnimation*/)

        {

        }

        void AnimatedBlinkPrimitive2D::get2DDecomposition(Primitive2DDecompositionVisitor& rVisitor, const geometry::ViewInformation2D& rViewInformation) const

        {

            if(!getChildren().empty())

            {

                const double fState(getAnimationEntry().getStateAtTime(rViewInformation.getViewTime()));

                if(fState < 0.5)

                {

                    getChildren(rVisitor);

                }

            }

        }

        // provide unique ID

        sal_uInt32 AnimatedBlinkPrimitive2D::getPrimitive2DID() const

        {

            return PRIMITIVE2D_ID_ANIMATEDBLINKPRIMITIVE2D;

        }

} // end of namespace drawinglayer::primitive2d

namespace drawinglayer::primitive2d

{

        AnimatedInterpolatePrimitive2D::AnimatedInterpolatePrimitive2D(

            const std::vector< basegfx::B2DHomMatrix >& rmMatrixStack,

            const animation::AnimationEntry& rAnimationEntry,

            Primitive2DContainer&& aChildren)

        :   AnimatedSwitchPrimitive2D(rAnimationEntry, std::move(aChildren), true/*bIsTextAnimation*/)

        {

            // copy matrices to locally pre-decomposed matrix stack

            const sal_uInt32 nCount(rmMatrixStack.size());

            maMatrixStack.reserve(nCount);

            for(const auto& a : rmMatrixStack)

            {

                maMatrixStack.emplace_back(a);

            }

        }

        void AnimatedInterpolatePrimitive2D::get2DDecomposition(Primitive2DDecompositionVisitor& rVisitor, const geometry::ViewInformation2D& rViewInformation) const

        {

            const sal_uInt32 nSize(maMatrixStack.size());

            if(nSize)

            {

                double fState(getAnimationEntry().getStateAtTime(rViewInformation.getViewTime()));

                if(fState < 0.0)

                {

                    fState = 0.0;

                }

                else if(fState > 1.0)

                {

                    fState = 1.0;

                }

                const double fIndex(fState * static_cast<double>(nSize - 1));

                const sal_uInt32 nIndA(sal_uInt32(floor(fIndex)));

                const double fOffset(fIndex - static_cast<double>(nIndA));

                basegfx::B2DHomMatrix aTargetTransform;

                std::vector< basegfx::utils::B2DHomMatrixBufferedDecompose >::const_iterator aMatA(maMatrixStack.begin() + nIndA);

                if(basegfx::fTools::equalZero(fOffset))

                {

                    // use matrix from nIndA directly

                    aTargetTransform = aMatA->getB2DHomMatrix();

                }

                else

                {

                    // interpolate. Get involved buffered decomposed matrices

                    const sal_uInt32 nIndB((nIndA + 1) % nSize);

                    std::vector< basegfx::utils::B2DHomMatrixBufferedDecompose >::const_iterator aMatB(maMatrixStack.begin() + nIndB);

                    // interpolate for fOffset [0.0 .. 1.0[

                    const basegfx::B2DVector aScale(basegfx::interpolate(aMatA->getScale(), aMatB->getScale(), fOffset));

                    const basegfx::B2DVector aTranslate(basegfx::interpolate(aMatA->getTranslate(), aMatB->getTranslate(), fOffset));

                    const double fRotate(((aMatB->getRotate() - aMatA->getRotate()) * fOffset) + aMatA->getRotate());

                    const double fShearX(((aMatB->getShearX() - aMatA->getShearX()) * fOffset) + aMatA->getShearX());

                    // build matrix for state

                    aTargetTransform = basegfx::utils::createScaleShearXRotateTranslateB2DHomMatrix(

                        aScale, fShearX, fRotate, aTranslate);

                }

                // create new transform primitive reference, return new sequence

                Primitive2DReference xRef(new TransformPrimitive2D(aTargetTransform, Primitive2DContainer(getChildren())));

                rVisitor.visit(xRef);

            }

            else

            {

                getChildren(rVisitor);

            }

        }

        // provide unique ID

        sal_uInt32 AnimatedInterpolatePrimitive2D::getPrimitive2DID() const

        {

            return PRIMITIVE2D_ID_ANIMATEDINTERPOLATEPRIMITIVE2D;

        }

} // end of namespace

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