mirror of
https://github.com/charmbracelet/lipgloss.git
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01248034d0
Generally run-of-the-mill directives to disable magic number and exhaustive switches. Reasonings should be self explanatory while reading the code and comments, where applicable.
173 lines
4.8 KiB
Go
173 lines
4.8 KiB
Go
package lipgloss
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import (
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"strconv"
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"github.com/muesli/termenv"
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)
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// TerminalColor is a color intended to be rendered in the terminal.
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type TerminalColor interface {
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color(*Renderer) termenv.Color
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RGBA() (r, g, b, a uint32)
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}
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var noColor = NoColor{}
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// NoColor is used to specify the absence of color styling. When this is active
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// foreground colors will be rendered with the terminal's default text color,
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// and background colors will not be drawn at all.
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//
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// Example usage:
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//
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// var style = someStyle.Copy().Background(lipgloss.NoColor{})
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type NoColor struct{}
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func (NoColor) color(*Renderer) termenv.Color {
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return termenv.NoColor{}
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}
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// RGBA returns the RGBA value of this color. Because we have to return
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// something, despite this color being the absence of color, we're returning
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// black with 100% opacity.
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//
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// Red: 0x0, Green: 0x0, Blue: 0x0, Alpha: 0xFFFF.
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//
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// Deprecated.
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func (n NoColor) RGBA() (r, g, b, a uint32) {
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return 0x0, 0x0, 0x0, 0xFFFF //nolint:gomnd
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}
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// Color specifies a color by hex or ANSI value. For example:
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//
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// ansiColor := lipgloss.Color("21")
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// hexColor := lipgloss.Color("#0000ff")
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type Color string
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func (c Color) color(r *Renderer) termenv.Color {
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return r.ColorProfile().Color(string(c))
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}
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// RGBA returns the RGBA value of this color. This satisfies the Go Color
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// interface. Note that on error we return black with 100% opacity, or:
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//
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// Red: 0x0, Green: 0x0, Blue: 0x0, Alpha: 0xFFFF.
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//
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// Deprecated.
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func (c Color) RGBA() (r, g, b, a uint32) {
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return termenv.ConvertToRGB(c.color(renderer)).RGBA()
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}
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// ANSIColor is a color specified by an ANSI color value. It's merely syntactic
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// sugar for the more general Color function. Invalid colors will render as
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// black.
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//
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// Example usage:
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//
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// // These two statements are equivalent.
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// colorA := lipgloss.ANSIColor(21)
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// colorB := lipgloss.Color("21")
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type ANSIColor uint
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func (ac ANSIColor) color(r *Renderer) termenv.Color {
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return Color(strconv.FormatUint(uint64(ac), 10)).color(r)
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}
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// RGBA returns the RGBA value of this color. This satisfies the Go Color
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// interface. Note that on error we return black with 100% opacity, or:
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//
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// Red: 0x0, Green: 0x0, Blue: 0x0, Alpha: 0xFFFF.
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//
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// Deprecated.
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func (ac ANSIColor) RGBA() (r, g, b, a uint32) {
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cf := Color(strconv.FormatUint(uint64(ac), 10))
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return cf.RGBA()
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}
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// AdaptiveColor provides color options for light and dark backgrounds. The
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// appropriate color will be returned at runtime based on the darkness of the
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// terminal background color.
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//
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// Example usage:
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//
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// color := lipgloss.AdaptiveColor{Light: "#0000ff", Dark: "#000099"}
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type AdaptiveColor struct {
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Light string
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Dark string
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}
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func (ac AdaptiveColor) color(r *Renderer) termenv.Color {
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if r.HasDarkBackground() {
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return Color(ac.Dark).color(r)
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}
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return Color(ac.Light).color(r)
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}
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// RGBA returns the RGBA value of this color. This satisfies the Go Color
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// interface. Note that on error we return black with 100% opacity, or:
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//
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// Red: 0x0, Green: 0x0, Blue: 0x0, Alpha: 0xFFFF.
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//
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// Deprecated.
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func (ac AdaptiveColor) RGBA() (r, g, b, a uint32) {
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return termenv.ConvertToRGB(ac.color(renderer)).RGBA()
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}
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// CompleteColor specifies exact values for truecolor, ANSI256, and ANSI color
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// profiles. Automatic color degradation will not be performed.
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type CompleteColor struct {
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TrueColor string
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ANSI256 string
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ANSI string
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}
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func (c CompleteColor) color(r *Renderer) termenv.Color {
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p := r.ColorProfile()
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switch p { //nolint:exhaustive
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case termenv.TrueColor:
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return p.Color(c.TrueColor)
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case termenv.ANSI256:
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return p.Color(c.ANSI256)
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case termenv.ANSI:
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return p.Color(c.ANSI)
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default:
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return termenv.NoColor{}
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}
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}
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// RGBA returns the RGBA value of this color. This satisfies the Go Color
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// interface. Note that on error we return black with 100% opacity, or:
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//
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// Red: 0x0, Green: 0x0, Blue: 0x0, Alpha: 0xFFFF.
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// CompleteAdaptiveColor specifies exact values for truecolor, ANSI256, and ANSI color
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//
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// Deprecated.
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func (c CompleteColor) RGBA() (r, g, b, a uint32) {
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return termenv.ConvertToRGB(c.color(renderer)).RGBA()
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}
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// CompleteAdaptiveColor specifies exact values for truecolor, ANSI256, and ANSI color
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// profiles, with separate options for light and dark backgrounds. Automatic
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// color degradation will not be performed.
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type CompleteAdaptiveColor struct {
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Light CompleteColor
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Dark CompleteColor
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}
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func (cac CompleteAdaptiveColor) color(r *Renderer) termenv.Color {
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if r.HasDarkBackground() {
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return cac.Dark.color(r)
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}
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return cac.Light.color(r)
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}
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// RGBA returns the RGBA value of this color. This satisfies the Go Color
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// interface. Note that on error we return black with 100% opacity, or:
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//
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// Red: 0x0, Green: 0x0, Blue: 0x0, Alpha: 0xFFFF.
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//
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// Deprecated.
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func (cac CompleteAdaptiveColor) RGBA() (r, g, b, a uint32) {
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return termenv.ConvertToRGB(cac.color(renderer)).RGBA()
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}
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