/* -*- 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 <vcl/alpha.hxx>

#include <vcl/settings.hxx>

#include <vcl/outdev.hxx>

#include <vcl/graph.hxx>

#include <vcl/graphicfilter.hxx>

#include <vcl/image.hxx>

#include <sal/types.h>

#include <image.h>

#include <bitmap/BitmapColorizeFilter.hxx>

using namespace css;

Image::Image()

{

}

Image::Image(const Bitmap& rBitmap)

{

    ImplInit(rBitmap);

}

Image::Image(uno::Reference<graphic::XGraphic> const & rxGraphic)

{

    if (rxGraphic.is())

    {

        const Graphic aGraphic(rxGraphic);

        OUString aPath;

        if (aGraphic.getOriginURL().startsWith("private:graphicrepository/", &aPath))

            mpImplData = std::make_shared<ImplImage>(aPath);

        else if (aGraphic.GetType() == GraphicType::GdiMetafile)

            mpImplData = std::make_shared<ImplImage>(aGraphic.GetGDIMetaFile());

        else

            ImplInit(aGraphic.GetBitmap());

    }

}

Image::Image(const OUString & rFileUrl)

{

    OUString sImageName;

    if (rFileUrl.startsWith("private:graphicrepository/", &sImageName))

        mpImplData = std::make_shared<ImplImage>(sImageName);

    else

    {

        Graphic aGraphic;

        if (ERRCODE_NONE == GraphicFilter::LoadGraphic(rFileUrl, u"" IMP_PNG ""_ustr, aGraphic))

            ImplInit(aGraphic.GetBitmap());

    }

}

Image::Image(StockImage, const OUString & rFileUrl)

    : mpImplData(std::make_shared<ImplImage>(rFileUrl))

{

}

void Image::ImplInit(const Bitmap& rBitmap)

{

    if (!rBitmap.IsEmpty())

        mpImplData = std::make_shared<ImplImage>(rBitmap);

}

const OUString & Image::GetStock() const

{

    if (mpImplData)

        return mpImplData->getStock();

    return EMPTY_OUSTRING;

}

Size Image::GetSizePixel() const

{

    if (mpImplData)

        return mpImplData->getSizePixel();

    else

        return Size();

}

Bitmap Image::GetBitmap() const

{

    if (mpImplData)

        return mpImplData->getBitmap();

    else

        return Bitmap();

}

void Image::SetOptional(bool bValue)

{

    if (mpImplData)

    {

        mpImplData->SetOptional(bValue);

    }

}

bool Image::operator==(const Image& rImage) const

{

    bool bRet = false;

    if (rImage.mpImplData == mpImplData)

        bRet = true;

    else if (!rImage.mpImplData || !mpImplData)

        bRet = false;

    else

        bRet = rImage.mpImplData->isEqual(*mpImplData);

    return bRet;

}

void Image::Draw(OutputDevice* pOutDev, const Point& rPos, DrawImageFlags nStyle, const Size* pSize) const

{

    if (!mpImplData || (!pOutDev->IsDeviceOutputNecessary() && pOutDev->GetConnectMetaFile() == nullptr))

        return;

    Size aOutSize = pSize ? *pSize : pOutDev->PixelToLogic(mpImplData->getSizePixel());

    Bitmap aRenderBmp = mpImplData->getBitmapForHiDPI(bool(nStyle & DrawImageFlags::Disable), pOutDev->GetGraphics());

    if (!(nStyle & DrawImageFlags::Disable) &&

        (nStyle & (DrawImageFlags::ColorTransform | DrawImageFlags::Highlight |

                   DrawImageFlags::Deactive | DrawImageFlags::SemiTransparent)))

    {

        if (nStyle & (DrawImageFlags::Highlight | DrawImageFlags::Deactive))

        {

            const StyleSettings& rSettings = pOutDev->GetSettings().GetStyleSettings();

            Color aColor;

            if (nStyle & DrawImageFlags::Highlight)

                aColor = rSettings.GetHighlightColor();

            else

                aColor = rSettings.GetDeactiveColor();

            BitmapFilter::Filter(aRenderBmp, BitmapColorizeFilter(aColor));

        }

        if (nStyle & DrawImageFlags::SemiTransparent)

        {

            Bitmap aTempBitmap(aRenderBmp);

            if (aTempBitmap.HasAlpha())

            {

                Bitmap aAlphaBmp(aTempBitmap.CreateAlphaMask().GetBitmap());

                aAlphaBmp.Adjust(50);

                aTempBitmap = Bitmap(aTempBitmap.CreateColorBitmap(), AlphaMask(aAlphaBmp));

            }

            else

            {

                sal_uInt8 cErase = 128;

                aTempBitmap = Bitmap(aTempBitmap, AlphaMask(aTempBitmap.GetSizePixel(), &cErase));

            }

            aRenderBmp = std::move(aTempBitmap);

        }

    }

    pOutDev->DrawBitmap(rPos, aOutSize, aRenderBmp);

}

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