/* -*- 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/lang/XUnoTunnel.hpp>
#include <sfx2/objsh.hxx>
#include <sfx2/docfac.hxx>
#include <comphelper/fileformat.h>
#include <comphelper/classids.hxx>
#include <unotools/pathoptions.hxx>
#include <unotools/resmgr.hxx>
#include <tools/vcompat.hxx>
#include <tools/helpers.hxx>
#include <vcl/virdev.hxx>
#include <svl/itempool.hxx>
#include <svx/fmmodel.hxx>
#include <svx/fmview.hxx>
#include <svx/fmpage.hxx>
#include <svx/galmisc.hxx>
#include <galobj.hxx>
#include <vcl/svapp.hxx>
#include <vcl/settings.hxx>
#include <vcl/dibtools.hxx>
#include "gallerydrawmodel.hxx"
#include <memory>
#include <bitmaps.hlst>

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

SgaObject::SgaObject()
:   bIsValid    ( false ),
    bIsThumbBmp ( true )
{
}

BitmapEx SgaObject::createPreviewBitmapEx(const Size& rSizePixel) const
{
    BitmapEx aRetval;

    if(rSizePixel.Width() && rSizePixel.Height())
    {
        if(SgaObjKind::Sound == GetObjKind())
        {
            aRetval = BitmapEx(RID_SVXBMP_GALLERY_MEDIA);
        }
        else if(IsThumbBitmap())
        {
            aRetval = GetThumbBmp();
        }
        else
        {
            const Graphic aGraphic(GetThumbMtf());

            aRetval = aGraphic.GetBitmapEx();
        }

        if(!aRetval.IsEmpty())
        {
            const Size aCurrentSizePixel(aRetval.GetSizePixel());
            const double fScaleX(static_cast<double>(rSizePixel.Width()) / static_cast<double>(aCurrentSizePixel.Width()));
            const double fScaleY(static_cast<double>(rSizePixel.Height()) / static_cast<double>(aCurrentSizePixel.Height()));
            const double fScale(std::min(fScaleX, fScaleY));

            // only scale when need to decrease, no need to make bigger as original. Also
            // prevent scaling close to 1.0 which is not needed for pixel graphics
            if(fScale < 1.0 && fabs(1.0 - fScale) > 0.005)
            {
                aRetval.Scale(fScale, fScale, BmpScaleFlag::BestQuality);
            }
        }
    }

    return aRetval;
}

bool SgaObject::CreateThumb( const Graphic& rGraphic )
{
    bool bRet = false;

    if( rGraphic.GetType() == GraphicType::Bitmap )
    {
        BitmapEx    aBmpEx( rGraphic.GetBitmapEx() );
        Size        aBmpSize( aBmpEx.GetSizePixel() );

        if( aBmpSize.Width() && aBmpSize.Height() )
        {
            if( aBmpEx.GetPrefMapMode().GetMapUnit() != MapUnit::MapPixel &&
                aBmpEx.GetPrefSize().Width() > 0 &&
                aBmpEx.GetPrefSize().Height() > 0 )
            {
                Size aLogSize( OutputDevice::LogicToLogic(aBmpEx.GetPrefSize(), aBmpEx.GetPrefMapMode(), MapMode(MapUnit::Map100thMM)) );

                if( aLogSize.Width() > 0 && aLogSize.Height() > 0 )
                {
                    double  fFactorLog = static_cast< double >( aLogSize.Width() ) / aLogSize.Height();
                    double  fFactorPix = static_cast< double >( aBmpSize.Width() ) / aBmpSize.Height();

                    if( fFactorPix > fFactorLog )
                        aBmpSize.setWidth( FRound( aBmpSize.Height() * fFactorLog ) );
                    else
                        aBmpSize.setHeight( FRound( aBmpSize.Width() / fFactorLog ) );

                    aBmpEx.Scale(aBmpSize, BmpScaleFlag::BestQuality);
                }
            }

            // take over BitmapEx
            aThumbBmp = aBmpEx;

            if( ( aBmpSize.Width() <= S_THUMB ) && ( aBmpSize.Height() <= S_THUMB ) )
            {
                aThumbBmp.Convert( BmpConversion::N8BitColors );
                bRet = true;
            }
            else
            {
                const float fFactor  = static_cast<float>(aBmpSize.Width()) / aBmpSize.Height();
                const Size  aNewSize( std::max( static_cast<long>(fFactor < 1. ? S_THUMB * fFactor : S_THUMB), 8L ),
                                      std::max( static_cast<long>(fFactor < 1. ? S_THUMB : S_THUMB / fFactor), 8L ) );
                if(aThumbBmp.Scale(
                    static_cast<double>(aNewSize.Width()) / aBmpSize.Width(),
                    static_cast<double>(aNewSize.Height()) / aBmpSize.Height(),
                    BmpScaleFlag::BestQuality ) )
                {
                    aThumbBmp.Convert( BmpConversion::N8BitColors );
                    bRet = true;
                }
            }
        }
    }
    else if( rGraphic.GetType() == GraphicType::GdiMetafile )
    {
        const Size aPrefSize( rGraphic.GetPrefSize() );
        const double fFactor  = static_cast<double>(aPrefSize.Width()) / static_cast<double>(aPrefSize.Height());
        Size aSize( S_THUMB, S_THUMB );
        if ( fFactor < 1.0 )
            aSize.setWidth( static_cast<sal_Int32>( S_THUMB * fFactor ) );
        else
            aSize.setHeight( static_cast<sal_Int32>( S_THUMB / fFactor ) );

        const GraphicConversionParameters aParameters(aSize, false, true, true /*TODO: extra ", true" post-#i121194#*/);
        aThumbBmp = rGraphic.GetBitmapEx(aParameters);

        if( !aThumbBmp.IsEmpty() )
        {
            aThumbBmp.Convert( BmpConversion::N8BitColors );
            bRet = true;
        }
    }

    return bRet;
}

void SgaObject::WriteData( SvStream& rOut, const OUString& rDestDir ) const
{
    static const sal_uInt32 nInventor = COMPAT_FORMAT( 'S', 'G', 'A', '3' );

    rOut.WriteUInt32( nInventor ).WriteUInt16( 0x0004 ).WriteUInt16( GetVersion() ).WriteUInt16( static_cast<sal_uInt16>(GetObjKind()) );
    rOut.WriteBool( bIsThumbBmp );

    if( bIsThumbBmp )
    {
        const SvStreamCompressFlags nOldCompressMode = rOut.GetCompressMode();
        const sal_uIntPtr           nOldVersion = rOut.GetVersion();

        rOut.SetCompressMode( SvStreamCompressFlags::ZBITMAP );
        rOut.SetVersion( SOFFICE_FILEFORMAT_50 );

        WriteDIBBitmapEx(aThumbBmp, rOut);

        rOut.SetVersion( nOldVersion );
        rOut.SetCompressMode( nOldCompressMode );
    }
    else
        WriteGDIMetaFile( rOut, aThumbMtf );

    OUString aURLWithoutDestDir = aURL.GetMainURL( INetURLObject::DecodeMechanism::NONE );
    aURLWithoutDestDir = aURLWithoutDestDir.replaceFirst(rDestDir, "");
    write_uInt16_lenPrefixed_uInt8s_FromOUString(rOut, aURLWithoutDestDir, RTL_TEXTENCODING_UTF8);
}

void SgaObject::ReadData(SvStream& rIn, sal_uInt16& rReadVersion )
{
    sal_uInt32      nTmp32;
    sal_uInt16      nTmp16;

    rIn.ReadUInt32( nTmp32 ).ReadUInt16( nTmp16 ).ReadUInt16( rReadVersion ).ReadUInt16( nTmp16 ).ReadCharAsBool( bIsThumbBmp );

    if( bIsThumbBmp )
    {
        ReadDIBBitmapEx(aThumbBmp, rIn);
    }
    else
    {
        ReadGDIMetaFile( rIn, aThumbMtf );
    }

    OUString aTmpStr = read_uInt16_lenPrefixed_uInt8s_ToOUString(rIn, RTL_TEXTENCODING_UTF8);
    aURL = INetURLObject(aTmpStr);
}

OUString const & SgaObject::GetTitle() const
{
    return aTitle;
}

void SgaObject::SetTitle( const OUString& rTitle )
{
    aTitle = rTitle;
}

SvStream& WriteSgaObject( SvStream& rOut, const SgaObject& rObj )
{
    rObj.WriteData( rOut, "" );
    return rOut;
}

SvStream& ReadSgaObject( SvStream& rIn, SgaObject& rObj )
{
    sal_uInt16 nReadVersion;

    rObj.ReadData( rIn, nReadVersion );
    rObj.bIsValid = ( rIn.GetError() == ERRCODE_NONE );

    return rIn;
}

SgaObjectBmp::SgaObjectBmp()
{
}

SgaObjectBmp::SgaObjectBmp( const INetURLObject& rURL )
{
    Graphic aGraphic;
    OUString  aFilter;

    if ( GalleryGraphicImportRet::IMPORT_NONE != GalleryGraphicImport( rURL, aGraphic, aFilter ) )
        Init( aGraphic, rURL );
}

SgaObjectBmp::SgaObjectBmp( const Graphic& rGraphic, const INetURLObject& rURL )
{
    if( FileExists( rURL ) )
        Init( rGraphic, rURL );
}

void SgaObjectBmp::Init( const Graphic& rGraphic, const INetURLObject& rURL )
{
    aURL = rURL;
    bIsValid = CreateThumb( rGraphic );
}

void SgaObjectBmp::WriteData( SvStream& rOut, const OUString& rDestDir ) const
{
    // Set version
    SgaObject::WriteData( rOut, rDestDir );
    char const aDummy[ 10 ] = { 0 };
    rOut.WriteBytes(aDummy, 10);
    write_uInt16_lenPrefixed_uInt8s_FromOString(rOut, OString()); //dummy
    write_uInt16_lenPrefixed_uInt8s_FromOUString(rOut, aTitle, RTL_TEXTENCODING_UTF8);
}

void SgaObjectBmp::ReadData( SvStream& rIn, sal_uInt16& rReadVersion )
{

    SgaObject::ReadData( rIn, rReadVersion );
    rIn.SeekRel( 10 ); // 16, 16, 32, 16
    read_uInt16_lenPrefixed_uInt8s_ToOString(rIn); //dummy

    if( rReadVersion >= 5 )
        aTitle = read_uInt16_lenPrefixed_uInt8s_ToOUString(rIn, RTL_TEXTENCODING_UTF8);
}


SgaObjectSound::SgaObjectSound() :
    eSoundType( SOUND_STANDARD )
{
}

SgaObjectSound::SgaObjectSound( const INetURLObject& rURL ) :
    eSoundType( SOUND_STANDARD )
{

    if( FileExists( rURL ) )
    {
        aURL = rURL;
        aThumbBmp = Bitmap( Size( 1, 1 ), 1 );
        bIsValid = true;
    }
    else
        bIsValid = false;
}

SgaObjectSound::~SgaObjectSound()
{
}

BitmapEx SgaObjectSound::GetThumbBmp() const
{
    OUString sId;

    switch( eSoundType )
    {
        case SOUND_COMPUTER: sId = RID_SVXBMP_GALLERY_SOUND_1; break;
        case SOUND_MISC: sId = RID_SVXBMP_GALLERY_SOUND_2; break;
        case SOUND_MUSIC: sId = RID_SVXBMP_GALLERY_SOUND_3; break;
        case SOUND_NATURE: sId = RID_SVXBMP_GALLERY_SOUND_4; break;
        case SOUND_SPEECH: sId = RID_SVXBMP_GALLERY_SOUND_5; break;
        case SOUND_TECHNIC: sId = RID_SVXBMP_GALLERY_SOUND_6; break;
        case SOUND_ANIMAL: sId = RID_SVXBMP_GALLERY_SOUND_7; break;

        // standard
        default:
             sId = RID_SVXBMP_GALLERY_MEDIA;
        break;
    }

    const BitmapEx  aBmpEx(sId);

    return aBmpEx;
}

void SgaObjectSound::WriteData( SvStream& rOut, const OUString& rDestDir ) const
{
    SgaObject::WriteData( rOut, rDestDir );
    rOut.WriteUInt16( eSoundType );
    write_uInt16_lenPrefixed_uInt8s_FromOUString(rOut, aTitle, RTL_TEXTENCODING_UTF8);
}

void SgaObjectSound::ReadData( SvStream& rIn, sal_uInt16& rReadVersion )
{
    SgaObject::ReadData( rIn, rReadVersion );

    if( rReadVersion >= 5 )
    {
        sal_uInt16      nTmp16;

        rIn.ReadUInt16( nTmp16 ); eSoundType = static_cast<GalSoundType>(nTmp16);

        if( rReadVersion >= 6 )
            aTitle = read_uInt16_lenPrefixed_uInt8s_ToOUString(rIn, RTL_TEXTENCODING_UTF8);
    }
}

SgaObjectAnim::SgaObjectAnim()
{
}

SgaObjectAnim::SgaObjectAnim( const Graphic& rGraphic,
                              const INetURLObject& rURL )
{
    aURL = rURL;
    bIsValid = CreateThumb( rGraphic );
}

SgaObjectINet::SgaObjectINet()
{
}

SgaObjectINet::SgaObjectINet( const Graphic& rGraphic, const INetURLObject& rURL ) :
            SgaObjectAnim   ( rGraphic, rURL )
{
}

SgaObjectSvDraw::SgaObjectSvDraw()
{
}

SgaObjectSvDraw::SgaObjectSvDraw( const FmFormModel& rModel, const INetURLObject& rURL )
{
    aURL = rURL;
    bIsValid = CreateThumb( rModel );
}


SvxGalleryDrawModel::SvxGalleryDrawModel()
: mpFormModel( nullptr )
{

    const OUString sFactoryURL("sdraw");

    mxDoc = SfxObjectShell::CreateObjectByFactoryName( sFactoryURL );

    if( mxDoc.Is() )
    {
        mxDoc->DoInitNew();

        uno::Reference< lang::XUnoTunnel > xTunnel( mxDoc->GetModel(), uno::UNO_QUERY );
        if( xTunnel.is() )
        {
            mpFormModel = dynamic_cast< FmFormModel* >(
                reinterpret_cast<SdrModel*>(xTunnel->getSomething(SdrModel::getUnoTunnelImplementationId())));
            if( mpFormModel )
            {
                mpFormModel->InsertPage( mpFormModel->AllocPage( false ) );
            }
        }
    }
}

SvxGalleryDrawModel::~SvxGalleryDrawModel()
{
    if( mxDoc.Is() )
        mxDoc->DoClose();

}

SgaObjectSvDraw::SgaObjectSvDraw( SvStream& rIStm, const INetURLObject& rURL )
{
    SvxGalleryDrawModel aModel;

    if( aModel.GetModel() )
    {
        if( GallerySvDrawImport( rIStm, *aModel.GetModel()  ) )
        {
            aURL = rURL;
            bIsValid = CreateThumb( *aModel.GetModel()  );
        }
    }
}

bool SgaObjectSvDraw::CreateThumb( const FmFormModel& rModel )
{
    Graphic     aGraphic;
    ImageMap    aImageMap;
    bool        bRet = false;

    if ( CreateIMapGraphic( rModel, aGraphic, aImageMap ) )
    {
        bRet = SgaObject::CreateThumb( aGraphic );
    }
    else
    {
        const FmFormPage* pPage = static_cast< const FmFormPage* >(rModel.GetPage(0));

        if(pPage)
        {
            const tools::Rectangle aObjRect(pPage->GetAllObjBoundRect());

            if(aObjRect.GetWidth() && aObjRect.GetHeight())
            {
                ScopedVclPtrInstance< VirtualDevice > pVDev;
                FmFormView aView(const_cast< FmFormModel& >(rModel), pVDev);

                aView.ShowSdrPage(const_cast< FmFormPage* >(pPage));
                aView.MarkAllObj();
                aThumbBmp = aView.GetMarkedObjBitmapEx();

                const Size aDiscreteSize(aThumbBmp.GetSizePixel());

                if(aDiscreteSize.Width() && aDiscreteSize.Height())
                {
                    sal_uInt32 nTargetSizeX(S_THUMB);
                    sal_uInt32 nTargetSizeY(S_THUMB);

                    if(aDiscreteSize.Width() > aDiscreteSize.Height())
                    {
                        nTargetSizeY = (aDiscreteSize.Height() * nTargetSizeX) / aDiscreteSize.Width();
                    }
                    else
                    {
                        nTargetSizeX = (aDiscreteSize.Width() * nTargetSizeY) / aDiscreteSize.Height();
                    }

                    if(!!aThumbBmp)
                    {
                        aThumbBmp.Scale(Size(nTargetSizeX, nTargetSizeY), BmpScaleFlag::BestQuality);
                        aThumbBmp.Convert(BmpConversion::N8BitColors);
                        bRet = true;
                    }
                }
            }
        }
    }

    return bRet;
}

void SgaObjectSvDraw::WriteData( SvStream& rOut, const OUString& rDestDir ) const
{
    SgaObject::WriteData( rOut, rDestDir );
    write_uInt16_lenPrefixed_uInt8s_FromOUString(rOut, aTitle, RTL_TEXTENCODING_UTF8);
}

void SgaObjectSvDraw::ReadData( SvStream& rIn, sal_uInt16& rReadVersion )
{
    SgaObject::ReadData( rIn, rReadVersion );

    if( rReadVersion >= 5 )
        aTitle = read_uInt16_lenPrefixed_uInt8s_ToOUString(rIn, RTL_TEXTENCODING_UTF8);
}

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