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Diffstat (limited to 'include/vcl/BitmapPalette.hxx')
-rw-r--r-- | include/vcl/BitmapPalette.hxx | 95 |
1 files changed, 95 insertions, 0 deletions
diff --git a/include/vcl/BitmapPalette.hxx b/include/vcl/BitmapPalette.hxx new file mode 100644 index 0000000000..1d5f79de5a --- /dev/null +++ b/include/vcl/BitmapPalette.hxx @@ -0,0 +1,95 @@ +/* -*- 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 . + */ + +#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); + + /// Returns the BitmapColor (i.e. palette index) that is either an exact match + /// of the required color, or failing that, the entry that is the closest i.e. least error + /// as measured by Color::GetColorError. + sal_uInt16 GetBestIndex(const BitmapColor& rCol) const; + /// Returns the BitmapColor (i.e. palette index) that is an exact match + /// of the required color. Returns SAL_MAX_UINT16 if nothing found. + sal_uInt16 GetMatchingIndex(const BitmapColor& rCol) const; + + /// Returns true if the palette is 8-bit grey palette. + bool IsGreyPalette8Bit() const; + /// Returns true if the palette is a grey palette (may not be 8-bit). + 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) +{ +} + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |