105 lines
2.8 KiB
C++
105 lines
2.8 KiB
C++
#pragma once
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#include <luna/Types.h>
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namespace ui
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{
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/**
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* @brief A 32-bit ARGB color.
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*/
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struct Color
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{
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union {
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u32 raw;
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u8 colors[4];
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};
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/**
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* @brief Return the blue value of this color.
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*
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* @return constexpr u8 The blue value.
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*/
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constexpr u8 red() const
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{
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return colors[2];
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}
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/**
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* @brief Return the green value of this color.
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*
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* @return constexpr u8 The green value.
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*/
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constexpr u8 green() const
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{
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return colors[1];
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}
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/**
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* @brief Return the blue value of this color.
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*
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* @return constexpr u8 The blue value.
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*/
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constexpr u8 blue() const
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{
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return colors[0];
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}
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/**
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* @brief Return the alpha value of this color.
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*
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* @return constexpr u8 The alpha value.
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*/
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constexpr u8 alpha() const
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{
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return colors[3];
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}
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/**
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* @brief Construct a new color from a 32-bit ARGB integer.
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*
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* @param raw The integer representing the color.
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* @return constexpr Color The new color.
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*/
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static constexpr Color from_u32(u32 raw)
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{
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return Color { .raw = raw };
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}
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/**
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* @brief Construct a new color from its separate RGBA values (from 0 to 255).
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*
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* @param red The red value.
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* @param green The green value.
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* @param blue The blue value.
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* @param alpha The alpha value.
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* @return constexpr Color The new color.
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*/
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static constexpr Color from_rgba(u8 red, u8 green, u8 blue, u8 alpha)
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{
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return Color { .colors = { blue, green, red, alpha } };
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}
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/**
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* @brief Construct a new color from its separate RGB values (from 0 to 255).
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*
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* @param red The red value.
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* @param green The green value.
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* @param blue The blue value.
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* @return constexpr Color The new color.
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*/
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static constexpr Color from_rgb(u8 red, u8 green, u8 blue)
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{
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return from_rgba(red, green, blue, 0xff);
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}
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};
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static constexpr Color WHITE = Color::from_rgb(0xff, 0xff, 0xff);
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static constexpr Color BLACK = Color::from_rgb(0x00, 0x00, 0x00);
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static constexpr Color GRAY = Color::from_rgb(0x80, 0x80, 0x80);
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static constexpr Color BLUE = Color::from_rgb(0x00, 0x00, 0xff);
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static constexpr Color GREEN = Color::from_rgb(0x00, 0xff, 0x00);
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static constexpr Color RED = Color::from_rgb(0xff, 0x00, 0x00);
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static constexpr Color CYAN = Color::from_rgb(0x00, 0xff, 0xff);
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};
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