77 lines
1.9 KiB
C++
77 lines
1.9 KiB
C++
#pragma once
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// STL includes
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#include <cstdint>
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#include <iostream>
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///
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/// Plain-Old-Data structure containing the red-green-blue color specification. Size of the
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/// structure is exactly 3-bytes for easy writing to led-device
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///
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struct ColorBgr
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{
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/// The blue color channel
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uint8_t blue;
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/// The green color channel
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uint8_t green;
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/// The red color channel
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uint8_t red;
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/// 'Black' RgbColor (0, 0, 0)
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static const ColorBgr BLACK;
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/// 'Red' RgbColor (255, 0, 0)
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static const ColorBgr RED;
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/// 'Green' RgbColor (0, 255, 0)
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static const ColorBgr GREEN;
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/// 'Blue' RgbColor (0, 0, 255)
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static const ColorBgr BLUE;
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/// 'Yellow' RgbColor (255, 255, 0)
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static const ColorBgr YELLOW;
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/// 'White' RgbColor (255, 255, 255)
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static const ColorBgr WHITE;
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};
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/// Assert to ensure that the size of the structure is 'only' 3 bytes
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static_assert(sizeof(ColorBgr) == 3, "Incorrect size of ColorBgr");
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///
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/// Stream operator to write ColorRgb to an outputstream (format "'{'[red]','[green]','[blue]'}'")
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///
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/// @param os The output stream
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/// @param color The color to write
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/// @return The output stream (with the color written to it)
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///
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inline std::ostream& operator<<(std::ostream& os, const ColorBgr& color)
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{
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os << "{"
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<< color.red << ","
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<< color.green << ","
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<< color.blue
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<< "}";
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return os;
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}
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/// Compare operator to check if a color is 'equal' to another color
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inline bool operator==(const ColorBgr & lhs, const ColorBgr & rhs)
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{
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return (lhs.red == rhs.red) &&
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(lhs.green == rhs.green) &&
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(lhs.blue == rhs.blue);
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}
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/// Compare operator to check if a color is 'smaller' than another color
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inline bool operator<(const ColorBgr & lhs, const ColorBgr & rhs)
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{
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return (lhs.red < rhs.red) &&
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(lhs.green < rhs.green) &&
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(lhs.blue < rhs.blue);
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}
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/// Compare operator to check if a color is 'smaller' than or 'equal' to another color
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inline bool operator<=(const ColorBgr & lhs, const ColorBgr & rhs)
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{
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return lhs < rhs || lhs == rhs;
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}
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