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/* -*- 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 .
*/
#ifndef INCLUDED_VCL_BITMAPPALETTE_HXX
#define INCLUDED_VCL_BITMAPPALETTE_HXX
#include <vcl/dllapi.h>
#include <vcl/BitmapColor.hxx>
#include <vcl/checksum.hxx>
#include <vector>
class VCL_DLLPUBLIC BitmapPalette
{
friend class SalBitmap;
friend class BitmapAccess;
private:
std::vector<BitmapColor> maBitmapColor;
public:
SAL_DLLPRIVATE const BitmapColor* ImplGetColorBuffer() const
{
return maBitmapColor.data();
}
SAL_DLLPRIVATE BitmapColor* ImplGetColorBuffer()
{
return maBitmapColor.data();
}
BitmapChecksum GetChecksum() const
{
return vcl_get_checksum(0, maBitmapColor.data(), maBitmapColor.size() * sizeof(BitmapColor));
}
public:
BitmapPalette()
{
}
BitmapPalette(sal_uInt16 nCount)
: maBitmapColor(nCount)
{
}
bool operator==( const BitmapPalette& rBitmapPalette ) const
{
return maBitmapColor == rBitmapPalette.maBitmapColor;
}
bool operator!=(const BitmapPalette& rBitmapPalette) const
{
return !( *this == rBitmapPalette );
}
bool operator!() const
{
return maBitmapColor.empty();
}
sal_uInt16 GetEntryCount() const
{
return maBitmapColor.size();
}
void SetEntryCount(sal_uInt16 nCount)
{
maBitmapColor.resize(nCount);
}
const BitmapColor& operator[](sal_uInt16 nIndex) const
{
assert(nIndex < maBitmapColor.size() && "Palette index is out of range");
return maBitmapColor[nIndex];
}
BitmapColor& operator[](sal_uInt16 nIndex)
{
assert(nIndex < maBitmapColor.size() && "Palette index is out of range");
return maBitmapColor[nIndex];
}
sal_uInt16 GetBestIndex(const BitmapColor& rCol) const
{
sal_uInt16 nRetIndex = 0;
if (!maBitmapColor.empty())
{
for (size_t j = 0; j < maBitmapColor.size(); ++j)
{
if (rCol == maBitmapColor[j])
{
return j;
}
}
sal_uInt16 nLastErr = SAL_MAX_UINT16;
for (size_t i = 0; i < maBitmapColor.size(); ++i)
{
const sal_uInt16 nActErr = rCol.GetColorError(maBitmapColor[i]);
if ( nActErr < nLastErr )
{
nLastErr = nActErr;
nRetIndex = i;
}
}
}
return nRetIndex;
}
/// Returns true if the palette is 8-bit grey palette.
bool IsGreyPalette8Bit() const;
/// Returns true if the paleete is a grey palette (may not be 8-bit).
bool IsGreyPaletteAny() const;
};
#endif // INCLUDED_VCL_BITMAPPALETTE_HXX
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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