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main.go
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main.go
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package main
// This example demonstrates various Lip Gloss style and layout features.
import (
"fmt"
"os"
"strings"
"github.com/charmbracelet/lipgloss"
"github.com/lucasb-eyer/go-colorful"
"golang.org/x/term"
)
const (
// In real life situations we'd adjust the document to fit the width we've
// detected. In the case of this example we're hardcoding the width, and
// later using the detected width only to truncate in order to avoid jaggy
// wrapping.
width = 96
columnWidth = 30
)
// Style definitions.
var (
// General.
subtle = lipgloss.AdaptiveColor{Light: "#D9DCCF", Dark: "#383838"}
highlight = lipgloss.AdaptiveColor{Light: "#874BFD", Dark: "#7D56F4"}
special = lipgloss.AdaptiveColor{Light: "#43BF6D", Dark: "#73F59F"}
divider = lipgloss.NewStyle().
SetString("•").
Padding(0, 1).
Foreground(subtle).
String()
url = lipgloss.NewStyle().Foreground(special).Render
// Tabs.
activeTabBorder = lipgloss.Border{
Top: "─",
Bottom: " ",
Left: "│",
Right: "│",
TopLeft: "╭",
TopRight: "╮",
BottomLeft: "┘",
BottomRight: "└",
}
tabBorder = lipgloss.Border{
Top: "─",
Bottom: "─",
Left: "│",
Right: "│",
TopLeft: "╭",
TopRight: "╮",
BottomLeft: "┴",
BottomRight: "┴",
}
tab = lipgloss.NewStyle().
Border(tabBorder, true).
BorderForeground(highlight).
Padding(0, 1)
activeTab = tab.Copy().Border(activeTabBorder, true)
tabGap = tab.Copy().
BorderTop(false).
BorderLeft(false).
BorderRight(false)
// Title.
titleStyle = lipgloss.NewStyle().
MarginLeft(1).
MarginRight(5).
Padding(0, 1).
Italic(true).
Foreground(lipgloss.Color("#FFF7DB")).
SetString("Lip Gloss")
descStyle = lipgloss.NewStyle().MarginTop(1)
infoStyle = lipgloss.NewStyle().
BorderStyle(lipgloss.NormalBorder()).
BorderTop(true).
BorderForeground(subtle)
// Dialog.
dialogBoxStyle = lipgloss.NewStyle().
Border(lipgloss.RoundedBorder()).
BorderForeground(lipgloss.Color("#874BFD")).
Padding(1, 0).
BorderTop(true).
BorderLeft(true).
BorderRight(true).
BorderBottom(true)
buttonStyle = lipgloss.NewStyle().
Foreground(lipgloss.Color("#FFF7DB")).
Background(lipgloss.Color("#888B7E")).
Padding(0, 3).
MarginTop(1)
activeButtonStyle = buttonStyle.Copy().
Foreground(lipgloss.Color("#FFF7DB")).
Background(lipgloss.Color("#F25D94")).
MarginRight(2).
Underline(true)
// List.
list = lipgloss.NewStyle().
Border(lipgloss.NormalBorder(), false, true, false, false).
BorderForeground(subtle).
MarginRight(2).
Height(8).
Width(columnWidth + 1)
listHeader = lipgloss.NewStyle().
BorderStyle(lipgloss.NormalBorder()).
BorderBottom(true).
BorderForeground(subtle).
MarginRight(2).
Render
listItem = lipgloss.NewStyle().PaddingLeft(2).Render
checkMark = lipgloss.NewStyle().SetString("✓").
Foreground(special).
PaddingRight(1).
String()
listDone = func(s string) string {
return checkMark + lipgloss.NewStyle().
Strikethrough(true).
Foreground(lipgloss.AdaptiveColor{Light: "#969B86", Dark: "#696969"}).
Render(s)
}
// Paragraphs/History.
historyStyle = lipgloss.NewStyle().
Align(lipgloss.Left).
Foreground(lipgloss.Color("#FAFAFA")).
Background(highlight).
Margin(1, 3, 0, 0).
Padding(1, 2).
Height(19).
Width(columnWidth)
// Status Bar.
statusNugget = lipgloss.NewStyle().
Foreground(lipgloss.Color("#FFFDF5")).
Padding(0, 1)
statusBarStyle = lipgloss.NewStyle().
Foreground(lipgloss.AdaptiveColor{Light: "#343433", Dark: "#C1C6B2"}).
Background(lipgloss.AdaptiveColor{Light: "#D9DCCF", Dark: "#353533"})
statusStyle = lipgloss.NewStyle().
Inherit(statusBarStyle).
Foreground(lipgloss.Color("#FFFDF5")).
Background(lipgloss.Color("#FF5F87")).
Padding(0, 1).
MarginRight(1)
encodingStyle = statusNugget.Copy().
Background(lipgloss.Color("#A550DF")).
Align(lipgloss.Right)
statusText = lipgloss.NewStyle().Inherit(statusBarStyle)
fishCakeStyle = statusNugget.Copy().Background(lipgloss.Color("#6124DF"))
// Page.
docStyle = lipgloss.NewStyle().Padding(1, 2, 1, 2)
)
func main() {
physicalWidth, _, _ := term.GetSize(int(os.Stdout.Fd()))
doc := strings.Builder{}
// Tabs
{
row := lipgloss.JoinHorizontal(
lipgloss.Top,
activeTab.Render("Lip Gloss"),
tab.Render("Blush"),
tab.Render("Eye Shadow"),
tab.Render("Mascara"),
tab.Render("Foundation"),
)
gap := tabGap.Render(strings.Repeat(" ", max(0, width-lipgloss.Width(row)-2)))
row = lipgloss.JoinHorizontal(lipgloss.Bottom, row, gap)
doc.WriteString(row + "\n\n")
}
// Title
{
var (
colors = colorGrid(1, 5)
title strings.Builder
)
for i, v := range colors {
const offset = 2
c := lipgloss.Color(v[0])
fmt.Fprint(&title, titleStyle.Copy().MarginLeft(i*offset).Background(c))
if i < len(colors)-1 {
title.WriteRune('\n')
}
}
desc := lipgloss.JoinVertical(lipgloss.Left,
descStyle.Render("Style Definitions for Nice Terminal Layouts"),
infoStyle.Render("From Charm"+divider+url("https://github.com/charmbracelet/lipgloss")),
)
row := lipgloss.JoinHorizontal(lipgloss.Top, title.String(), desc)
doc.WriteString(row + "\n\n")
}
// Dialog
{
okButton := activeButtonStyle.Render("Yes")
cancelButton := buttonStyle.Render("Maybe")
question := lipgloss.NewStyle().
Width(50).
Align(lipgloss.Center).
Render("Are you sure you want to eat marmalade?")
buttons := lipgloss.JoinHorizontal(lipgloss.Top, okButton, cancelButton)
ui := lipgloss.JoinVertical(lipgloss.Center, question, buttons)
dialog := lipgloss.Place(width, 9,
lipgloss.Center, lipgloss.Center,
dialogBoxStyle.Render(ui),
lipgloss.WithWhitespaceChars("猫咪"),
lipgloss.WithWhitespaceForeground(subtle),
)
doc.WriteString(dialog + "\n\n")
}
// Color grid
colors := func() string {
colors := colorGrid(14, 8)
b := strings.Builder{}
for _, x := range colors {
for _, y := range x {
s := lipgloss.NewStyle().SetString(" ").Background(lipgloss.Color(y))
b.WriteString(s.String())
}
b.WriteRune('\n')
}
return b.String()
}()
lists := lipgloss.JoinHorizontal(lipgloss.Top,
list.Render(
lipgloss.JoinVertical(lipgloss.Left,
listHeader("Citrus Fruits to Try"),
listDone("Grapefruit"),
listDone("Yuzu"),
listItem("Citron"),
listItem("Kumquat"),
listItem("Pomelo"),
),
),
list.Copy().Width(columnWidth).Render(
lipgloss.JoinVertical(lipgloss.Left,
listHeader("Actual Lip Gloss Vendors"),
listItem("Glossier"),
listItem("Claire‘s Boutique"),
listDone("Nyx"),
listItem("Mac"),
listDone("Milk"),
),
),
)
doc.WriteString(lipgloss.JoinHorizontal(lipgloss.Top, lists, colors))
// Marmalade history
{
const (
historyA = `The Romans learned from the ` + "\n" + ` Greeks that quinces slowly cooked with honey would “set” when cool. The Apicius gives a recipe for preserving whole quinces, stems and leaves attached, in a bath of honey diluted with defrutum: Roman marmalade. Preserves of quince and lemon appear (along with rose, apple, plum and pear) in the Book of ceremonies of the Byzantine Emperor Constantine VII Porphyrogennetos.
But they yolod some stuff
`
historyB = "Medieval quince preserves, which went by the French name cotignac, produced in a clear version and a fruit pulp version, began to lose their medieval seasoning of spices in the 16th century. In the 17th century, La Varenne provided recipes for both thick and clear cotignac."
historyC = "In 1524, Henry VIII, King of England, received a “box of marmalade” from Mr. Hull of Exeter. This was probably marmelada, a solid quince paste from Portugal, still made and sold in southern Europe today. It became a favourite treat of Anne Boleyn and her ladies in waiting."
)
doc.WriteString(lipgloss.JoinHorizontal(
lipgloss.Top,
historyStyle.Copy().Align(lipgloss.Right).Render(historyA),
historyStyle.Copy().Align(lipgloss.Center).Render(historyB),
historyStyle.Copy().MarginRight(0).Render(historyC),
))
doc.WriteString("\n\n")
}
// Status bar
{
w := lipgloss.Width
statusKey := statusStyle.Render("STATUS")
encoding := encodingStyle.Render("UTF-8")
fishCake := fishCakeStyle.Render("🍥 Fish Cake")
statusVal := statusText.Copy().
Width(width - w(statusKey) - w(encoding) - w(fishCake)).
Render("Ravishing")
bar := lipgloss.JoinHorizontal(lipgloss.Top,
statusKey,
statusVal,
encoding,
fishCake,
)
doc.WriteString(statusBarStyle.Width(width).Render(bar))
}
if physicalWidth > 0 {
docStyle = docStyle.MaxWidth(physicalWidth)
}
// Okay, let's print it
fmt.Println(docStyle.Render(doc.String()))
}
func colorGrid(xSteps, ySteps int) [][]string {
x0y0, _ := colorful.Hex("#F25D94")
x1y0, _ := colorful.Hex("#EDFF82")
x0y1, _ := colorful.Hex("#643AFF")
x1y1, _ := colorful.Hex("#14F9D5")
x0 := make([]colorful.Color, ySteps)
for i := range x0 {
x0[i] = x0y0.BlendLuv(x0y1, float64(i)/float64(ySteps))
}
x1 := make([]colorful.Color, ySteps)
for i := range x1 {
x1[i] = x1y0.BlendLuv(x1y1, float64(i)/float64(ySteps))
}
grid := make([][]string, ySteps)
for x := 0; x < ySteps; x++ {
y0 := x0[x]
grid[x] = make([]string, xSteps)
for y := 0; y < xSteps; y++ {
grid[x][y] = y0.BlendLuv(x1[x], float64(y)/float64(xSteps)).Hex()
}
}
return grid
}
func max(a, b int) int {
if a > b {
return a
}
return b
}