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package main
import (
"fmt"
"strings"
"github.com/gdamore/tcell/v2"
"github.com/rivo/tview"
)
const logo = `
__ _
/ /__ __(_)__ _ __
/ __/ | / / / _ \ | /| / /
/ /_ | |/ / / __/ |/ |/ /
\__/ |___/_/\___/|__/|__/
`
const (
subtitle = `tview - Rich Widgets for Terminal UIs`
navigation = `Ctrl-N: Next slide Ctrl-P: Previous slide Ctrl-C: Exit`
mouse = `(or use your mouse)`
)
// Cover returns the cover page.
func Cover(nextSlide func()) (title string, content tview.Primitive) {
// What's the size of the logo?
lines := strings.Split(logo, "\n")
logoWidth := 0
logoHeight := len(lines)
for _, line := range lines {
if len(line) > logoWidth {
logoWidth = len(line)
}
}
logoBox := tview.NewTextView().
SetTextColor(tcell.ColorGreen).
SetDoneFunc(func(key tcell.Key) {
nextSlide()
})
fmt.Fprint(logoBox, logo)
// Create a frame for the subtitle and navigation infos.
frame := tview.NewFrame(tview.NewBox()).
SetBorders(0, 0, 0, 0, 0, 0).
AddText(subtitle, true, tview.AlignCenter, tcell.ColorWhite).
AddText("", true, tview.AlignCenter, tcell.ColorWhite).
AddText(navigation, true, tview.AlignCenter, tcell.ColorDarkMagenta).
AddText(mouse, true, tview.AlignCenter, tcell.ColorDarkMagenta)
// Create a Flex layout that centers the logo and subtitle.
flex := tview.NewFlex().
SetDirection(tview.FlexRow).
AddItem(tview.NewBox(), 0, 7, false).
AddItem(tview.NewFlex().
AddItem(tview.NewBox(), 0, 1, false).
AddItem(logoBox, logoWidth, 1, true).
AddItem(tview.NewBox(), 0, 1, false), logoHeight, 1, true).
AddItem(frame, 0, 10, false)
return "Start", flex
}
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