/
color.go
172 lines (150 loc) · 4.8 KB
/
color.go
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package lipgloss
import (
"strconv"
"github.com/muesli/termenv"
)
// TerminalColor is a color intended to be rendered in the terminal.
type TerminalColor interface {
color(*Renderer) termenv.Color
RGBA() (r, g, b, a uint32)
}
var noColor = NoColor{}
// NoColor is used to specify the absence of color styling. When this is active
// foreground colors will be rendered with the terminal's default text color,
// and background colors will not be drawn at all.
//
// Example usage:
//
// var style = someStyle.Copy().Background(lipgloss.NoColor{})
type NoColor struct{}
func (NoColor) color(*Renderer) termenv.Color {
return termenv.NoColor{}
}
// RGBA returns the RGBA value of this color. Because we have to return
// something, despite this color being the absence of color, we're returning
// black with 100% opacity.
//
// Red: 0x0, Green: 0x0, Blue: 0x0, Alpha: 0xFFFF.
//
// Deprecated.
func (n NoColor) RGBA() (r, g, b, a uint32) {
return 0x0, 0x0, 0x0, 0xFFFF //nolint:gomnd
}
// Color specifies a color by hex or ANSI value. For example:
//
// ansiColor := lipgloss.Color("21")
// hexColor := lipgloss.Color("#0000ff")
type Color string
func (c Color) color(r *Renderer) termenv.Color {
return r.ColorProfile().Color(string(c))
}
// RGBA returns the RGBA value of this color. This satisfies the Go Color
// interface. Note that on error we return black with 100% opacity, or:
//
// Red: 0x0, Green: 0x0, Blue: 0x0, Alpha: 0xFFFF.
//
// Deprecated.
func (c Color) RGBA() (r, g, b, a uint32) {
return termenv.ConvertToRGB(c.color(renderer)).RGBA()
}
// ANSIColor is a color specified by an ANSI color value. It's merely syntactic
// sugar for the more general Color function. Invalid colors will render as
// black.
//
// Example usage:
//
// // These two statements are equivalent.
// colorA := lipgloss.ANSIColor(21)
// colorB := lipgloss.Color("21")
type ANSIColor uint
func (ac ANSIColor) color(r *Renderer) termenv.Color {
return Color(strconv.FormatUint(uint64(ac), 10)).color(r)
}
// RGBA returns the RGBA value of this color. This satisfies the Go Color
// interface. Note that on error we return black with 100% opacity, or:
//
// Red: 0x0, Green: 0x0, Blue: 0x0, Alpha: 0xFFFF.
//
// Deprecated.
func (ac ANSIColor) RGBA() (r, g, b, a uint32) {
cf := Color(strconv.FormatUint(uint64(ac), 10))
return cf.RGBA()
}
// AdaptiveColor provides color options for light and dark backgrounds. The
// appropriate color will be returned at runtime based on the darkness of the
// terminal background color.
//
// Example usage:
//
// color := lipgloss.AdaptiveColor{Light: "#0000ff", Dark: "#000099"}
type AdaptiveColor struct {
Light string
Dark string
}
func (ac AdaptiveColor) color(r *Renderer) termenv.Color {
if r.HasDarkBackground() {
return Color(ac.Dark).color(r)
}
return Color(ac.Light).color(r)
}
// RGBA returns the RGBA value of this color. This satisfies the Go Color
// interface. Note that on error we return black with 100% opacity, or:
//
// Red: 0x0, Green: 0x0, Blue: 0x0, Alpha: 0xFFFF.
//
// Deprecated.
func (ac AdaptiveColor) RGBA() (r, g, b, a uint32) {
return termenv.ConvertToRGB(ac.color(renderer)).RGBA()
}
// CompleteColor specifies exact values for truecolor, ANSI256, and ANSI color
// profiles. Automatic color degradation will not be performed.
type CompleteColor struct {
TrueColor string
ANSI256 string
ANSI string
}
func (c CompleteColor) color(r *Renderer) termenv.Color {
p := r.ColorProfile()
switch p { //nolint:exhaustive
case termenv.TrueColor:
return p.Color(c.TrueColor)
case termenv.ANSI256:
return p.Color(c.ANSI256)
case termenv.ANSI:
return p.Color(c.ANSI)
default:
return termenv.NoColor{}
}
}
// RGBA returns the RGBA value of this color. This satisfies the Go Color
// interface. Note that on error we return black with 100% opacity, or:
//
// Red: 0x0, Green: 0x0, Blue: 0x0, Alpha: 0xFFFF.
// CompleteAdaptiveColor specifies exact values for truecolor, ANSI256, and ANSI color
//
// Deprecated.
func (c CompleteColor) RGBA() (r, g, b, a uint32) {
return termenv.ConvertToRGB(c.color(renderer)).RGBA()
}
// CompleteAdaptiveColor specifies exact values for truecolor, ANSI256, and ANSI color
// profiles, with separate options for light and dark backgrounds. Automatic
// color degradation will not be performed.
type CompleteAdaptiveColor struct {
Light CompleteColor
Dark CompleteColor
}
func (cac CompleteAdaptiveColor) color(r *Renderer) termenv.Color {
if r.HasDarkBackground() {
return cac.Dark.color(r)
}
return cac.Light.color(r)
}
// RGBA returns the RGBA value of this color. This satisfies the Go Color
// interface. Note that on error we return black with 100% opacity, or:
//
// Red: 0x0, Green: 0x0, Blue: 0x0, Alpha: 0xFFFF.
//
// Deprecated.
func (cac CompleteAdaptiveColor) RGBA() (r, g, b, a uint32) {
return termenv.ConvertToRGB(cac.color(renderer)).RGBA()
}