KeqingMoe/tui
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

新增功能：当终端不支持时，可以转为最接近的受支持的颜色

Browse Source
This commit is contained in:
keqingmoe 2024-12-11 14:29:44 +08:00
parent 54a518a77a
commit a84d1be86d
1 changed files with 26 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

28
src/tui/screen/colors.cppm
View File

@ -635,7 +635,7 @@ constexpr auto palette256_table = std::array<color_info, 256uz>{
/**
* @brief 获取 16 种预设的颜色的对应的信息
*/
constexpr auto get_color_info(palette16 index) noexcept -> color_info
constexpr auto get_color_info(palette16 index) noexcept -> const color_info&
{
return palette256_table[std::to_underlying(index)];
}
@ -643,11 +643,35 @@ constexpr auto get_color_info(palette16 index) noexcept -> color_info
/**
* @brief 获取 256 种预设的颜色的对应的信息
*/
constexpr auto get_color_info(palette256 index) noexcept -> color_info
constexpr auto get_color_info(palette256 index) noexcept -> const color_info&
{
return palette256_table[std::to_underlying(index)];
}
/**
* @brief 从 RGB 值获取最接近的 256 种预设颜色
*/
constexpr auto get_nearest_palette256(rgb_t rgb) noexcept -> palette256
{
auto p256 = std::views::all(palette256_table) | std::views::drop(16uz);
auto it = std::ranges::min_element(p256, {}, [rgb](const color_info& c) {
auto dr = c.red - rgb.red;
auto dg = c.green - rgb.green;
auto db = c.blue - rgb.blue;
return dr * dr + dg * dg + db * db;
});
return static_cast<palette256>(it->index256);
}
/**
* @brief 从 256 种预设颜色获取最接近的 16 种预设颜色
*/
constexpr auto get_nearest_palette16(palette256 c) noexcept -> palette16
{
auto&& p16 = get_color_info(c);
return static_cast<palette16>(p16.index16);
}
}
}