BitmapPalette.hxx

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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
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 * 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
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#pragma once
 
#include <vcl/dllapi.h>
#include <vcl/BitmapColor.hxx>
#include <vcl/checksum.hxx>
#include <o3tl/cow_wrapper.hxx>
 
#include <array>
 
class ImplBitmapPalette;
 
class VCL_DLLPUBLIC BitmapPalette
{
    friend class SalBitmap;
    friend class BitmapAccess;
 
public:
 
    SAL_DLLPRIVATE const BitmapColor* ImplGetColorBuffer() const;
 
    SAL_DLLPRIVATE BitmapColor* ImplGetColorBuffer();
 
    BitmapChecksum GetChecksum() const;
 
    BitmapPalette();
    BitmapPalette( const BitmapPalette& );
    BitmapPalette( BitmapPalette&& ) noexcept;
    BitmapPalette(std::initializer_list<BitmapColor> aBitmapColor);
    template <size_t N> BitmapPalette(const std::array<BitmapColor, N>& colors);
    explicit BitmapPalette(sal_uInt16 nCount);
    ~BitmapPalette();
 
    BitmapPalette& operator=( const BitmapPalette& );
    BitmapPalette& operator=( BitmapPalette&& ) noexcept;
 
    bool operator==( const BitmapPalette& rBitmapPalette ) const;
    bool operator!=(const BitmapPalette& rBitmapPalette) const
    {
        return !( *this == rBitmapPalette );
    }
    bool operator!() const;
 
    sal_uInt16 GetEntryCount() const;
    void SetEntryCount(sal_uInt16 nCount);
 
    const BitmapColor& operator[](sal_uInt16 nIndex) const;
    BitmapColor& operator[](sal_uInt16 nIndex);
 
    sal_uInt16 GetBestIndex(const BitmapColor& rCol) const;
 
    bool IsGreyPalette8Bit() const;
    bool IsGreyPaletteAny() const;
 
    typedef o3tl::cow_wrapper< ImplBitmapPalette > ImplType;
 
private:
    BitmapPalette(const BitmapColor* first, const BitmapColor* last);
 
    ImplType mpImpl;
};
 
template <size_t N>
BitmapPalette::BitmapPalette(const std::array<BitmapColor, N>& colors)
    : BitmapPalette(colors.data(), colors.data() + N)
{
}
 
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