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package ui
import (
"hash/fnv"
"github.com/gdamore/tcell/v2"
)
type ColorScheme int
const (
ColorSchemeBase ColorScheme = iota
ColorSchemeExtended
)
var colors = map[ColorScheme][]tcell.Color{
// base 16 colors, excluding grayscale colors.
ColorSchemeBase: {
tcell.ColorMaroon,
tcell.ColorGreen,
tcell.ColorOlive,
tcell.ColorNavy,
tcell.ColorPurple,
tcell.ColorTeal,
tcell.ColorSilver,
tcell.ColorRed,
tcell.ColorLime,
tcell.ColorYellow,
tcell.ColorBlue,
tcell.ColorFuchsia,
tcell.ColorAqua,
},
// all XTerm extended colors with HSL saturation=1, light=0.5
ColorSchemeExtended: {
tcell.Color196, // HSL hue: 0°
tcell.Color202, // HSL hue: 22°
tcell.Color208, // HSL hue: 32°
tcell.Color214, // HSL hue: 41°
tcell.Color220, // HSL hue: 51°
tcell.Color226, // HSL hue: 60°
tcell.Color190, // HSL hue: 69°
tcell.Color154, // HSL hue: 79°
tcell.Color118, // HSL hue: 88°
tcell.Color82, // HSL hue: 98°
tcell.Color46, // HSL hue: 120°
tcell.Color47, // HSL hue: 142°
tcell.Color48, // HSL hue: 152°
tcell.Color49, // HSL hue: 161°
tcell.Color50, // HSL hue: 171°
tcell.Color51, // HSL hue: 180°
tcell.Color45, // HSL hue: 189°
tcell.Color39, // HSL hue: 199°
tcell.Color33, // HSL hue: 208°
tcell.Color27, // HSL hue: 218°
tcell.Color21, // HSL hue: 240°
tcell.Color57, // HSL hue: 262°
tcell.Color93, // HSL hue: 272°
tcell.Color129, // HSL hue: 281°
tcell.Color165, // HSL hue: 291°
tcell.Color201, // HSL hue: 300°
tcell.Color200, // HSL hue: 309°
tcell.Color199, // HSL hue: 319°
tcell.Color198, // HSL hue: 328°
tcell.Color197, // HSL hue: 338°
},
}
func IdentColor(scheme ColorScheme, ident string) tcell.Color {
h := fnv.New32()
_, _ = h.Write([]byte(ident))
c := colors[scheme]
return c[int(h.Sum32()%uint32(len(c)))]
}
func IdentString(scheme ColorScheme, ident string) StyledString {
color := IdentColor(scheme, ident)
style := tcell.StyleDefault.Foreground(color)
return Styled(ident, style)
}
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