/* -*- 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 <sal/config.h>

#include <rtl/string.hxx>

#include <algorithm>

#include <tuple>

#include <o3tl/hash_combine.hxx>

#include <o3tl/safeint.hxx>

#include <tools/gen.hxx>

OString Pair::toString() const

{

    // Note that this is not just used for debugging output but the

    // format is parsed by external code (passed in callbacks to

    // LibreOfficeKit clients). So don't change.

    return OString::number(A()) + ", " + OString::number(B());

}

size_t Pair::GetHashValue() const

{

    size_t hash = 0;

    o3tl::hash_combine( hash, mnA );

    o3tl::hash_combine( hash, mnB );

    return hash;

}

void RectangleTemplateBase::SaturatingSetSize(const SizeTemplateBase& rSize)

{

    if (rSize.Width() < 0)

        mnRight = o3tl::saturating_add(mnLeft, (rSize.Width() + 1));

    else if ( rSize.Width() > 0 )

        mnRight = o3tl::saturating_add(mnLeft, (rSize.Width() - 1));

    else

        SetWidthEmpty();

    if ( rSize.Height() < 0 )

        mnBottom = o3tl::saturating_add(mnTop, (rSize.Height() + 1));

    else if ( rSize.Height() > 0 )

        mnBottom = o3tl::saturating_add(mnTop, (rSize.Height() - 1));

    else

        SetHeightEmpty();

}

void RectangleTemplateBase::SaturatingSetPosX(tools::Long x)

{

    if (!IsWidthEmpty())

        mnRight = o3tl::saturating_add(mnRight, x - mnLeft);

    mnLeft = x;

}

void RectangleTemplateBase::SaturatingSetPosY(tools::Long y)

{

    if (!IsHeightEmpty())

        mnBottom = o3tl::saturating_add(mnBottom, y - mnTop);

    mnTop = y;

}

void RectangleTemplateBase::Union( const RectangleTemplateBase& rRect )

{

    if ( rRect.IsEmpty() )

        return;

    if ( IsEmpty() )

        *this = rRect;

    else

    {

        std::tie(mnLeft, mnRight) = std::minmax({ mnLeft, rRect.mnLeft, mnRight, rRect.mnRight });

        std::tie(mnTop, mnBottom) = std::minmax({ mnTop, rRect.mnTop, mnBottom, rRect.mnBottom });

    }

}

void RectangleTemplateBase::Intersection( const RectangleTemplateBase& rRect )

{

    if ( IsEmpty() )

        return;

    if ( rRect.IsEmpty() )

    {

        *this = tools::Rectangle();

        return;

    }

    // Normalize rectangle

    RectangleTemplateBase aTmpRect( rRect );

    Normalize();

    aTmpRect.Normalize();

    // Perform intersection

    mnLeft  = std::max( mnLeft, aTmpRect.mnLeft );

    mnRight = std::min( mnRight, aTmpRect.mnRight );

    mnTop   = std::max( mnTop, aTmpRect.mnTop );

    mnBottom= std::min( mnBottom, aTmpRect.mnBottom );

    // Determine if intersection is empty

    if ( mnRight < mnLeft || mnBottom < mnTop )

        *this = tools::Rectangle();

}

void RectangleTemplateBase::Normalize()

{

    if ((mnRight < mnLeft) && (!IsWidthEmpty()))

    {

        std::swap(mnLeft, mnRight);

    }

    if ((mnBottom < mnTop) && (!IsHeightEmpty()))

    {

        std::swap(mnBottom, mnTop);

    }

}

bool RectangleTemplateBase::Contains( const PointTemplateBase& rPoint ) const

{

    if ( IsEmpty() )

        return false;

    if ( mnLeft <= mnRight )

    {

        if ( (rPoint.X() < mnLeft) || (rPoint.X() > mnRight) )

            return false;

    }

    else

    {

        if ( (rPoint.X() > mnLeft) || (rPoint.X() < mnRight) )

            return false;

    }

    if ( mnTop <= mnBottom )

    {

        if ( (rPoint.Y() < mnTop) || (rPoint.Y() > mnBottom) )

            return false;

    }

    else

    {

        if ( (rPoint.Y() > mnTop) || (rPoint.Y() < mnBottom) )

            return false;

    }

    return true;

}

bool RectangleTemplateBase::Contains( const RectangleTemplateBase& rRect ) const

{

    return Contains( PointTemplateBase{ rRect.Left(), rRect.Top() } )

        && Contains( PointTemplateBase{ rRect.Right(), rRect.Bottom() } );

}

bool RectangleTemplateBase::Overlaps( const RectangleTemplateBase& rRect ) const

{

    // If there's no intersection, they don't overlap

    RectangleTemplateBase aTmp(*this);

    aTmp.Intersection(rRect);

    return !aTmp.IsEmpty();

}

OString RectangleTemplateBase::toString() const

{

    // Note that this is not just used for debugging output but the

    // format is parsed by external code (passed in callbacks to

    // LibreOfficeKit clients). So don't change.

    return OString::number(Left()) + ", "

            + OString::number(Top()) + ", "

            + OString::number(getOpenWidth()) + ", "

            + OString::number(getOpenHeight());

}

void RectangleTemplateBase::expand(tools::Long nExpandBy)

{

    AdjustLeft(-nExpandBy);

    AdjustTop(-nExpandBy);

    AdjustRight(nExpandBy);

    AdjustBottom(nExpandBy);

}

void RectangleTemplateBase::shrink(tools::Long nShrinkBy)

{

    mnLeft   += nShrinkBy;

    mnTop    += nShrinkBy;

    if (!IsWidthEmpty())

        mnRight -= nShrinkBy;

    if (!IsHeightEmpty())

        mnBottom -= nShrinkBy;

}

tools::Long RectangleTemplateBase::AdjustRight(tools::Long nHorzMoveDelta)

{

    if (IsWidthEmpty())

        mnRight = mnLeft + nHorzMoveDelta - 1;

    else

        mnRight += nHorzMoveDelta;

    return mnRight;

}

tools::Long RectangleTemplateBase::AdjustBottom( tools::Long nVertMoveDelta )

{

    if (IsHeightEmpty())

        mnBottom = mnTop + nVertMoveDelta - 1;

    else

        mnBottom += nVertMoveDelta;

    return mnBottom;

}

static_assert( std::is_trivially_copyable< Pair >::value );

static_assert( std::is_trivially_copyable< Point >::value );

static_assert( std::is_trivially_copyable< Size >::value );

static_assert( std::is_trivially_copyable< Range >::value );

static_assert( std::is_trivially_copyable< Selection >::value );

static_assert( std::is_trivially_copyable< tools::Rectangle >::value );

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