72 lines
1.3 KiB
Go
72 lines
1.3 KiB
Go
package tui
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import (
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"context"
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"fmt"
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"sync/atomic"
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"time"
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"github.com/gdamore/tcell/v2"
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"github.com/rivo/tview"
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)
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type LoadingBar struct {
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*tview.Box
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view *tview.TextView
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secondsElapsed atomic.Int64
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needDrawFunc func()
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reset func()
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}
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func NewLoadingBar(needDrawFunc func()) *LoadingBar {
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b := &LoadingBar{
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Box: tview.NewBox(),
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view: tview.NewTextView(),
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needDrawFunc: needDrawFunc,
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}
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b.view.SetBackgroundColor(tview.Styles.PrimaryTextColor)
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b.view.SetTextColor(b.GetBackgroundColor())
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return b
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}
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func (b *LoadingBar) Start(ctx context.Context) {
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ctx, b.reset = context.WithCancel(ctx)
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go func() {
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ticker := time.NewTicker(1 * time.Second)
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defer ticker.Stop()
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b.secondsElapsed.Store(0)
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for {
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select {
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case <-ctx.Done():
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return
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case <-ticker.C:
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b.secondsElapsed.Add(1)
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b.needDrawFunc()
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}
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}
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}()
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}
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func (b *LoadingBar) Stop() {
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b.reset()
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}
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func (b *LoadingBar) Draw(screen tcell.Screen) {
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seconds := b.secondsElapsed.Load()
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var time string
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switch {
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case seconds < 60:
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time = fmt.Sprintf("%ds", seconds)
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default:
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time = fmt.Sprintf("%dm%ds", seconds/60, seconds%60)
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}
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b.view.SetText(fmt.Sprintf(" Loading... %s (press Escape to cancel) ", time))
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x, y, width, _ := b.GetInnerRect()
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b.view.SetRect(x, y, width, 1)
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b.view.Draw(screen)
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}
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