/* -*- 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/BitmapInfoAccess.hxx>

#include <salbmp.hxx>

#include <svdata.hxx>

#include <salinst.hxx>

BitmapInfoAccess::BitmapInfoAccess(const AlphaMask& rBitmap, BitmapAccessMode nMode)

    : BitmapInfoAccess(rBitmap.GetBitmap(), nMode)

{

}

BitmapInfoAccess::BitmapInfoAccess(const Bitmap& rBitmap, BitmapAccessMode nMode)

    : mpBuffer(nullptr)

    , mnAccessMode(nMode)

{

    std::shared_ptr<SalBitmap> xImpBmp = rBitmap.ImplGetSalBitmap();

    if (!xImpBmp)

        return;

    if (mnAccessMode == BitmapAccessMode::Write)

    {

        xImpBmp->DropScaledCache();

        if (xImpBmp.use_count() > 2)

        {

            xImpBmp.reset();

            const_cast<Bitmap&>(rBitmap).ImplMakeUnique();

            xImpBmp = rBitmap.ImplGetSalBitmap();

        }

    }

    mpBuffer = xImpBmp->AcquireBuffer(mnAccessMode);

    if (!mpBuffer)

    {

        std::shared_ptr<SalBitmap> xNewImpBmp(GetSalInstance()->CreateSalBitmap());

        if (xNewImpBmp->Create(*xImpBmp))

        {

            xImpBmp = std::move(xNewImpBmp);

            const_cast<Bitmap&>(rBitmap).ImplSetSalBitmap(xImpBmp);

            mpBuffer = xImpBmp->AcquireBuffer(mnAccessMode);

        }

    }

    maBitmap = rBitmap;

}

BitmapInfoAccess::~BitmapInfoAccess()

{

    std::shared_ptr<SalBitmap> xImpBmp = maBitmap.ImplGetSalBitmap();

    if (mpBuffer && xImpBmp)

    {

        xImpBmp->ReleaseBuffer(mpBuffer, mnAccessMode);

    }

}

sal_uInt16 BitmapInfoAccess::GetBestPaletteIndex(const BitmapColor& rBitmapColor) const

{

    const BitmapBuffer* pBuffer = mpBuffer;

    return (HasPalette() ? pBuffer->maPalette.GetBestIndex(rBitmapColor) : 0);

}

sal_uInt16 BitmapInfoAccess::GetMatchingPaletteIndex(const BitmapColor& rBitmapColor) const

{

    assert(HasPalette());

    return mpBuffer->maPalette.GetMatchingIndex(rBitmapColor);

}

/* vim:set shiftwidth=4 softtabstop=4 expandtab: */