79 lines
1.8 KiB
Go
79 lines
1.8 KiB
Go
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package styling
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import (
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"fmt"
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"strconv"
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"github.com/lucasb-eyer/go-colorful"
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"github.com/muesli/termenv"
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)
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const (
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HighlightedColor = "212"
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SecondaryColor = "225"
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)
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const (
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ProgressBarWidth = 71
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ProgressFullChar = "█"
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ProgressEmptyChar = "░"
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)
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var (
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Term = termenv.EnvColorProfile()
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Keyword = MakeFgStyle("211")
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Subtle = MakeFgStyle("241")
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ProgressEmpty = Subtle(ProgressEmptyChar)
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Dot = ColorFg(" • ", "236")
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// Gradient colors we'll use for the progress bar
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Ramp = MakeRamp("#B14FFF", "#00FFA3", ProgressBarWidth)
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)
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// Utils
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// Color a string's foreground with the given value.
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func ColorFg(val, color string) string {
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return termenv.String(val).Foreground(Term.Color(color)).String()
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}
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// Return a function that will colorize the foreground of a given string.
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func MakeFgStyle(color string) func(string) string {
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return termenv.Style{}.Foreground(Term.Color(color)).Styled
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}
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// Color a string's foreground and background with the given value.
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func MakeFgBgStyle(fg, bg string) func(string) string {
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return termenv.Style{}.
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Foreground(Term.Color(fg)).
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Background(Term.Color(bg)).
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Styled
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}
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// Generate a blend of colors.
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func MakeRamp(colorA, colorB string, steps float64) (s []string) {
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cA, _ := colorful.Hex(colorA)
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cB, _ := colorful.Hex(colorB)
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for i := 0.0; i < steps; i++ {
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c := cA.BlendLuv(cB, i/steps)
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s = append(s, ColorToHex(c))
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}
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return
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}
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// Convert a colorful.Color to a hexadecimal format compatible with termenv.
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func ColorToHex(c colorful.Color) string {
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return fmt.Sprintf("#%s%s%s", ColorFloatToHex(c.R), ColorFloatToHex(c.G), ColorFloatToHex(c.B))
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}
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// Helper function for converting colors to hex. Assumes a value between 0 and
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// 1.
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func ColorFloatToHex(f float64) (s string) {
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s = strconv.FormatInt(int64(f*255), 16)
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if len(s) == 1 {
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s = "0" + s
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}
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return
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}
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