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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 .
*/
#include <config_features.h>
#include <sal/log.hxx>
#include <osl/diagnose.h>
#include <tools/helpers.hxx>
#include <vcl/BitmapPalette.hxx>
#include <vcl/bitmapex.hxx>
#include <vcl/outdev.hxx>
#include <svdata.hxx>
#include <salinst.hxx>
class ImplBitmapPalette
{
public:
ImplBitmapPalette(std::initializer_list<BitmapColor> aBitmapColor)
: maBitmapColor(aBitmapColor)
{
}
ImplBitmapPalette() {}
ImplBitmapPalette(sal_uInt16 nCount)
: maBitmapColor(nCount)
{
}
std::vector<BitmapColor>& GetBitmapData() { return maBitmapColor; }
const std::vector<BitmapColor>& GetBitmapData() const { return maBitmapColor; }
bool operator==(const ImplBitmapPalette& rBitmapPalette) const
{
return maBitmapColor == rBitmapPalette.maBitmapColor;
}
private:
std::vector<BitmapColor> maBitmapColor;
};
namespace
{
BitmapPalette::ImplType& GetGlobalDefault()
{
static BitmapPalette::ImplType gDefault;
return gDefault;
}
}
BitmapPalette::BitmapPalette()
: mpImpl(GetGlobalDefault())
{
}
BitmapPalette::BitmapPalette(const BitmapPalette& rOther)
: mpImpl(rOther.mpImpl)
{
}
BitmapPalette::BitmapPalette(BitmapPalette&& rOther) noexcept
: mpImpl(std::move(rOther.mpImpl))
{
}
BitmapPalette::BitmapPalette(std::initializer_list<BitmapColor> aBitmapColor)
: mpImpl(aBitmapColor)
{
}
BitmapPalette::BitmapPalette(sal_uInt16 nCount)
: mpImpl(nCount)
{
}
BitmapPalette::~BitmapPalette() {}
BitmapPalette& BitmapPalette::operator=(const BitmapPalette& rOther)
{
mpImpl = rOther.mpImpl;
return *this;
}
BitmapPalette& BitmapPalette::operator=(BitmapPalette&& rOther) noexcept
{
mpImpl = std::move(rOther.mpImpl);
return *this;
}
const BitmapColor* BitmapPalette::ImplGetColorBuffer() const
{
return mpImpl->GetBitmapData().data();
}
BitmapColor* BitmapPalette::ImplGetColorBuffer() { return mpImpl->GetBitmapData().data(); }
BitmapChecksum BitmapPalette::GetChecksum() const
{
auto const& rBitmapData = mpImpl->GetBitmapData();
return vcl_get_checksum(0, rBitmapData.data(), rBitmapData.size() * sizeof(BitmapColor));
}
bool BitmapPalette::operator==(const BitmapPalette& rOther) const
{
return mpImpl == rOther.mpImpl;
}
bool BitmapPalette::operator!() const { return mpImpl->GetBitmapData().empty(); }
sal_uInt16 BitmapPalette::GetEntryCount() const { return mpImpl->GetBitmapData().size(); }
void BitmapPalette::SetEntryCount(sal_uInt16 nCount) { mpImpl->GetBitmapData().resize(nCount); }
const BitmapColor& BitmapPalette::operator[](sal_uInt16 nIndex) const
{
assert(nIndex < mpImpl->GetBitmapData().size() && "Palette index is out of range");
return mpImpl->GetBitmapData()[nIndex];
}
BitmapColor& BitmapPalette::operator[](sal_uInt16 nIndex)
{
assert(nIndex < mpImpl->GetBitmapData().size() && "Palette index is out of range");
return mpImpl->GetBitmapData()[nIndex];
}
sal_uInt16 BitmapPalette::GetBestIndex(const BitmapColor& rCol) const
{
auto const& rBitmapColor = mpImpl->GetBitmapData();
sal_uInt16 nRetIndex = 0;
if (!rBitmapColor.empty())
{
for (size_t j = 0; j < rBitmapColor.size(); ++j)
{
if (rCol == rBitmapColor[j])
{
return j;
}
}
sal_uInt16 nLastErr = SAL_MAX_UINT16;
for (size_t i = 0; i < rBitmapColor.size(); ++i)
{
const sal_uInt16 nActErr = rCol.GetColorError(rBitmapColor[i]);
if (nActErr < nLastErr)
{
nLastErr = nActErr;
nRetIndex = i;
}
}
}
return nRetIndex;
}
bool BitmapPalette::IsGreyPaletteAny() const
{
auto const& rBitmapColor = mpImpl->GetBitmapData();
const int nEntryCount = GetEntryCount();
if (!nEntryCount) // NOTE: an empty palette means 1:1 mapping
return true;
// See above: only certain entry values will result in a valid call to GetGreyPalette
if (nEntryCount == 2 || nEntryCount == 4 || nEntryCount == 16 || nEntryCount == 256)
{
const BitmapPalette& rGreyPalette = Bitmap::GetGreyPalette(nEntryCount);
if (rGreyPalette == *this)
return true;
}
bool bRet = false;
// TODO: is it worth to compare the entries for the general case?
if (nEntryCount == 2)
{
const BitmapColor& rCol0(rBitmapColor[0]);
const BitmapColor& rCol1(rBitmapColor[1]);
bRet = rCol0.GetRed() == rCol0.GetGreen() && rCol0.GetRed() == rCol0.GetBlue()
&& rCol1.GetRed() == rCol1.GetGreen() && rCol1.GetRed() == rCol1.GetBlue();
}
return bRet;
}
bool BitmapPalette::IsGreyPalette8Bit() const
{
auto const& rBitmapColor = mpImpl->GetBitmapData();
const int nEntryCount = GetEntryCount();
if (!nEntryCount) // NOTE: an empty palette means 1:1 mapping
return true;
if (nEntryCount != 256)
return false;
for (sal_uInt16 i = 0; i < 256; ++i)
{
if (rBitmapColor[i] != BitmapColor(i, i, i))
return false;
}
return true;
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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