/* -*- 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 <DrawViewShell.hxx>

#include <com/sun/star/scanner/XScannerManager2.hpp>

#include <toolkit/helper/vclunohelper.hxx>

#include <svx/svxids.hrc>

#include <sfx2/bindings.hxx>

#include <sfx2/viewfrm.hxx>

#include <svx/svdograf.hxx>

#include <svx/svdpagv.hxx>

#include <Window.hxx>

#include <drawview.hxx>

#include <tools/helpers.hxx>

#include <vcl/svapp.hxx>

namespace sd {

void DrawViewShell::ScannerEvent()

{

    if( mxScannerManager.is() )

    {

        const css::scanner::ScannerContext aContext( mxScannerManager->getAvailableScanners().getConstArray()[ 0 ] );

        const css::scanner::ScanError      eError = mxScannerManager->getError( aContext );

        if( css::scanner::ScanError_ScanErrorNone == eError )

        {

            const css::uno::Reference< css::awt::XBitmap > xBitmap( mxScannerManager->getBitmap( aContext ) );

            if( xBitmap.is() )

            {

                const Bitmap aScanBmp( VCLUnoHelper::GetBitmap( xBitmap ) );

                if( !aScanBmp.IsEmpty() )

                {

                    const SolarMutexGuard aGuard;

                    SdrPage*            pPage = mpDrawView->GetSdrPageView()->GetPage();

                    Size                aBmpSize( aScanBmp.GetPrefSize() ), aPageSize( pPage->GetSize() );

                    const MapMode       aMap100( MapUnit::Map100thMM );

                    if( !aBmpSize.Width() || !aBmpSize.Height() )

                        aBmpSize = aScanBmp.GetSizePixel();

                    if( aScanBmp.GetPrefMapMode().GetMapUnit() == MapUnit::MapPixel )

                        aBmpSize = GetActiveWindow()->PixelToLogic( aBmpSize, aMap100 );

                    else

                        aBmpSize = OutputDevice::LogicToLogic( aBmpSize, aScanBmp.GetPrefMapMode(), aMap100 );

                    aPageSize.AdjustWidth( -(pPage->GetLeftBorder() + pPage->GetRightBorder()) );

                    aPageSize.AdjustHeight( -(pPage->GetUpperBorder() + pPage->GetLowerBorder()) );

                    if( ( ( aBmpSize.Height() > aPageSize.Height() ) || ( aBmpSize.Width() > aPageSize.Width() ) ) && aBmpSize.Height() && aPageSize.Height() )

                    {

                        double fGrfWH = static_cast<double>(aBmpSize.Width()) / aBmpSize.Height();

                        double fWinWH = static_cast<double>(aPageSize.Width()) / aPageSize.Height();

                        if( fGrfWH < fWinWH )

                        {

                            aBmpSize.setWidth( basegfx::fround<::tools::Long>( aPageSize.Height() * fGrfWH ) );

                            aBmpSize.setHeight( aPageSize.Height() );

                        }

                        else if( fGrfWH > 0.F )

                        {

                            aBmpSize.setWidth( aPageSize.Width() );

                            aBmpSize.setHeight( basegfx::fround<::tools::Long>( aPageSize.Width() / fGrfWH ) );

                        }

                    }

                    Point aPnt ( ( aPageSize.Width() - aBmpSize.Width() ) >> 1, ( aPageSize.Height() - aBmpSize.Height() ) >> 1 );

                    aPnt += Point( pPage->GetLeftBorder(), pPage->GetUpperBorder() );

                    ::tools::Rectangle   aRect( aPnt, aBmpSize );

                    bool        bInsertNewObject = true;

                    const SdrMarkList& rMarkList = GetView()->GetMarkedObjectList();

                    if( rMarkList.GetMarkCount() != 0 )

                    {

                        if( rMarkList.GetMarkCount() == 1 )

                        {

                            SdrMark*    pMark = rMarkList.GetMark(0);

                            SdrObject*  pObj = pMark->GetMarkedSdrObj();

                            if( auto pGrafObj = dynamic_cast< SdrGrafObj *>( pObj ) )

                            {

                                if( pGrafObj->IsEmptyPresObj() )

                                {

                                    bInsertNewObject = false;

                                    pGrafObj->SetEmptyPresObj(false);

                                    pGrafObj->SetOutlinerParaObject(std::nullopt);

                                    pGrafObj->SetGraphic( Graphic( aScanBmp ) );

                                }

                            }

                        }

                    }

                    if( bInsertNewObject )

                    {

                        rtl::Reference<SdrGrafObj> pGrafObj = new SdrGrafObj(

                            GetView()->getSdrModelFromSdrView(),

                            Graphic(aScanBmp),

                            aRect);

                        SdrPageView* pPV = GetView()->GetSdrPageView();

                        GetView()->InsertObjectAtView( pGrafObj.get(), *pPV, SdrInsertFlags::SETDEFLAYER );

                    }

                }

            }

        }

    }

    SfxBindings& rBindings = GetViewFrame()->GetBindings();

    rBindings.Invalidate( SID_TWAIN_SELECT );

    rBindings.Invalidate( SID_TWAIN_TRANSFER );

}

} // end of namespace sd

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