e7c3d04309
format all files Revert "format all files" This reverts commit 95d5812e49e7f916b68e786596f5a8eb5bcac414. Revert "format some files" This reverts commit ed3c8762d4d828b2b28e7b18809fc33f4f8ccaf5. format all files fix formatting in dir include fix formatting of debug macro
146 lines
3.9 KiB
C++
146 lines
3.9 KiB
C++
/*****************************************************************************
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*
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* This file is part of Mapnik (c++ mapping toolkit)
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*
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* Copyright (C) 2021 Artem Pavlenko
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*
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*****************************************************************************/
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#ifndef MAPNIK_PALETTE_HPP
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#define MAPNIK_PALETTE_HPP
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// mapnik
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#include <mapnik/config.hpp>
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#include <mapnik/global.hpp>
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#include <mapnik/util/noncopyable.hpp>
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#define USE_DENSE_HASH_MAP
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#include <mapnik/warning.hpp>
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MAPNIK_DISABLE_WARNING_PUSH
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#include <mapnik/warning_ignore.hpp>
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#ifdef USE_DENSE_HASH_MAP
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#include <mapnik/sparsehash/dense_hash_map>
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using rgba_hash_table = google::dense_hash_map<unsigned int, unsigned char>;
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#else
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#include <unordered_map>
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using rgba_hash_table = std::unordered_map<unsigned int, unsigned char>;
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#endif
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MAPNIK_DISABLE_WARNING_POP
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// stl
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#include <vector>
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#include <tuple>
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#define U2RED(x) ((x)&0xff)
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#define U2GREEN(x) (((x) >> 8) & 0xff)
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#define U2BLUE(x) (((x) >> 16) & 0xff)
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#define U2ALPHA(x) (((x) >> 24) & 0xff)
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namespace mapnik {
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struct rgba;
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struct MAPNIK_DECL rgb
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{
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std::uint8_t r;
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std::uint8_t g;
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std::uint8_t b;
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inline rgb(std::uint8_t r_, std::uint8_t g_, std::uint8_t b_)
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: r(r_)
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, g(g_)
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, b(b_)
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{}
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rgb(rgba const& c);
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inline bool operator==(const rgb& y) const { return r == y.r && g == y.g && b == y.b; }
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};
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struct MAPNIK_DECL rgba
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{
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std::uint8_t r;
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std::uint8_t g;
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std::uint8_t b;
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std::uint8_t a;
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inline rgba(std::uint8_t r_, std::uint8_t g_, std::uint8_t b_, std::uint8_t a_)
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: r(r_)
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, g(g_)
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, b(b_)
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, a(a_)
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{}
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inline rgba(rgb const& c)
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: r(c.r)
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, g(c.g)
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, b(c.b)
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, a(0xFF)
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{}
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inline rgba(unsigned const& c)
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: r(U2RED(c))
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, g(U2GREEN(c))
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, b(U2BLUE(c))
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, a(U2ALPHA(c))
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{}
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inline bool operator==(rgba const& y) const { return r == y.r && g == y.g && b == y.b && a == y.a; }
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// ordering by mean(a,r,g,b), a, r, g, b
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struct MAPNIK_DECL mean_sort_cmp
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{
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bool operator()(const rgba& x, const rgba& y) const;
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};
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inline bool operator<(rgba const& y) const { return std::tie(r, g, b, a) < std::tie(y.r, y.g, y.b, y.a); }
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};
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class MAPNIK_DECL rgba_palette : private util::noncopyable
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{
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public:
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enum palette_type { PALETTE_RGBA = 0, PALETTE_RGB = 1, PALETTE_ACT = 2 };
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explicit rgba_palette(std::string const& pal, palette_type type = PALETTE_RGBA);
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rgba_palette();
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inline std::vector<rgb> const& palette() const { return rgb_pal_; }
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inline std::vector<unsigned> const& alpha_table() const { return alpha_pal_; }
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inline std::vector<rgb>& palette() { return rgb_pal_; }
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inline std::vector<unsigned>& alpha_table() { return alpha_pal_; }
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unsigned char quantize(unsigned c) const;
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bool valid() const;
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std::string to_string() const;
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private:
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void parse(std::string const& pal, palette_type type);
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private:
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std::vector<rgba> sorted_pal_;
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mutable rgba_hash_table color_hashmap_;
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unsigned colors_;
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std::vector<rgb> rgb_pal_;
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std::vector<unsigned> alpha_pal_;
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};
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} // namespace mapnik
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#endif // MAPNIK_PALETTE_HPP
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