forked from Mirrors/bubbletea
95 lines
2.0 KiB
Go
95 lines
2.0 KiB
Go
package main
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// A simple example that shows how to render a progress bar in a "pure"
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// fashion. In this example we bump the progress by 25% every second,
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// maintaining the progress state on our top level model using the progress bar
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// model's ViewAs method only for rendering.
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//
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// The signature for ViewAs is:
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//
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// func (m Model) ViewAs(percent float64) string
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//
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// So it takes a float between 0 and 1, and renders the progress bar
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// accordingly. When using the progress bar in this "pure" fashion and there's
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// no need to call an Update method.
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//
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// The progress bar is also able to animate itself, however. For details see
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// the progress-animated example.
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import (
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"fmt"
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"os"
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"strings"
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"time"
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"github.com/charmbracelet/bubbles/progress"
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tea "github.com/charmbracelet/bubbletea"
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"github.com/charmbracelet/lipgloss"
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)
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const (
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padding = 2
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maxWidth = 80
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)
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var helpStyle = lipgloss.NewStyle().Foreground(lipgloss.Color("#626262")).Render
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func main() {
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prog := progress.New(progress.WithScaledGradient("#FF7CCB", "#FDFF8C"))
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if err := tea.NewProgram(model{progress: prog}).Start(); err != nil {
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fmt.Println("Oh no!", err)
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os.Exit(1)
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}
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}
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type tickMsg time.Time
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type model struct {
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percent float64
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progress progress.Model
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}
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func (_ model) Init() tea.Cmd {
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return tickCmd()
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}
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func (m model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
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switch msg := msg.(type) {
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case tea.KeyMsg:
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return m, tea.Quit
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case tea.WindowSizeMsg:
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m.progress.Width = msg.Width - padding*2 - 4
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if m.progress.Width > maxWidth {
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m.progress.Width = maxWidth
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}
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return m, nil
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case tickMsg:
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m.percent += 0.25
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if m.percent > 1.0 {
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m.percent = 1.0
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return m, tea.Quit
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}
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return m, tickCmd()
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default:
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return m, nil
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}
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}
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func (e model) View() string {
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pad := strings.Repeat(" ", padding)
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return "\n" +
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pad + e.progress.ViewAs(e.percent) + "\n\n" +
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pad + helpStyle("Press any key to quit")
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}
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func tickCmd() tea.Cmd {
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return tea.Tick(time.Second, func(t time.Time) tea.Msg {
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return tickMsg(t)
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})
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}
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