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#ifndef face_hh_INCLUDED
#define face_hh_INCLUDED
#include "color.hh"
#include "flags.hh"
namespace Kakoune
{
enum class Attribute : int
{
Normal = 0,
Underline = 1 << 1,
Reverse = 1 << 2,
Blink = 1 << 3,
Bold = 1 << 4,
Dim = 1 << 5,
Italic = 1 << 6,
FinalFg = 1 << 7,
FinalBg = 1 << 8,
FinalAttr = 1 << 9,
Final = FinalFg | FinalBg | FinalAttr
};
constexpr bool with_bit_ops(Meta::Type<Attribute>) { return true; }
struct Face
{
Color fg;
Color bg;
Attribute attributes;
constexpr Face(Color fg = Color::Default, Color bg = Color::Default,
Attribute attributes = Attribute::Normal)
: fg{fg}, bg{bg}, attributes{attributes} {}
};
constexpr bool operator==(const Face& lhs, const Face& rhs)
{
return lhs.fg == rhs.fg and
lhs.bg == rhs.bg and
lhs.attributes == rhs.attributes;
}
constexpr bool operator!=(const Face& lhs, const Face& rhs)
{
return not (lhs == rhs);
}
constexpr size_t hash_value(const Face& val)
{
return hash_values(val.fg, val.bg, val.attributes);
}
inline Face merge_faces(const Face& base, const Face& face)
{
auto choose = [&](Color Face::*color, Attribute final_attr) {
if (face.attributes & final_attr)
return face.*color;
if (base.attributes & final_attr)
return base.*color;
if (face.*color == Color::Default)
return base.*color;
return face.*color;
};
return Face{ choose(&Face::fg, Attribute::FinalFg),
choose(&Face::bg, Attribute::FinalBg),
face.attributes & Attribute::FinalAttr ? face.attributes :
base.attributes & Attribute::FinalAttr ? base.attributes :
face.attributes | base.attributes };
}
}
#endif // face_hh_INCLUDED
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