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#ifndef color_hh_INCLUDED
#define color_hh_INCLUDED
#include "exception.hh"
#include "hash.hh"
#include "meta.hh"
#include "assert.hh"
namespace Kakoune
{
class String;
class StringView;
struct Color
{
enum NamedColor : unsigned char
{
Default,
Black,
Red,
Green,
Yellow,
Blue,
Magenta,
Cyan,
White,
BrightBlack,
BrightRed,
BrightGreen,
BrightYellow,
BrightBlue,
BrightMagenta,
BrightCyan,
BrightWhite,
RGB,
};
union
{
NamedColor color;
unsigned char a;
};
unsigned char r = 0;
unsigned char g = 0;
unsigned char b = 0;
constexpr bool isRGB() const { return a >= RGB; }
constexpr Color() : Color{Default} {}
constexpr Color(NamedColor c) : color{c} {}
constexpr Color(unsigned char r, unsigned char g, unsigned char b, unsigned char a = 255)
: a{a}, r{r}, g{g}, b{b}
{
validate_alpha();
}
private:
constexpr void validate_alpha() {
static_assert(RGB == 17);
if (a < RGB)
throw runtime_error("Colors alpha must be > 16");
}
};
constexpr bool operator==(Color lhs, Color rhs)
{
return lhs.color == rhs.color and
lhs.r == rhs.r and lhs.g == rhs.g and lhs.b == rhs.b;
}
Color str_to_color(StringView color);
String to_string(Color color);
String option_to_string(Color color);
Color option_from_string(Meta::Type<Color>, StringView str);
bool is_color_name(StringView color);
constexpr size_t hash_value(const Color& val)
{
return val.isRGB() ?
hash_values(val.a, val.r, val.g, val.b)
: hash_value(val.color);
}
}
#endif // color_hh_INCLUDED
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