forked from tslocum/cview
65 lines
1.9 KiB
Go
65 lines
1.9 KiB
Go
package main
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import (
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"fmt"
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"strings"
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"github.com/gdamore/tcell/v2"
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"gitlab.com/tslocum/cview"
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)
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const logo = `
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======= === === === ======== === === ===
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=== === === === === === === ===
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=== === === === ====== === === ===
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=== ====== === === ===========
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======= == === ======== ==== ====
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`
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const (
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subtitle = `Terminal-based user interface toolkit`
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mouse = `Navigate with your keyboard or mouse.`
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navigation = `Next slide: Ctrl-N Previous: Ctrl-P Exit: Ctrl-C`
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)
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// Cover returns the cover page.
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func Cover(nextSlide func()) (title string, content cview.Primitive) {
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// What's the size of the logo?
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lines := strings.Split(logo, "\n")
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logoWidth := 0
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logoHeight := len(lines)
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for _, line := range lines {
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if len(line) > logoWidth {
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logoWidth = len(line)
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}
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}
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logoBox := cview.NewTextView()
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logoBox.SetTextColor(tcell.ColorGreen.TrueColor())
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logoBox.SetDoneFunc(func(key tcell.Key) {
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nextSlide()
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})
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fmt.Fprint(logoBox, logo)
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// Create a frame for the subtitle and navigation infos.
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frame := cview.NewFrame(cview.NewBox())
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frame.SetBorders(0, 0, 0, 0, 0, 0)
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frame.AddText(subtitle, true, cview.AlignCenter, tcell.ColorWhite.TrueColor())
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frame.AddText("", true, cview.AlignCenter, tcell.ColorWhite.TrueColor())
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frame.AddText(mouse, true, cview.AlignCenter, tcell.ColorDarkMagenta.TrueColor())
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frame.AddText(navigation, true, cview.AlignCenter, tcell.ColorDarkMagenta.TrueColor())
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// Create a Flex layout that centers the logo and subtitle.
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subFlex := cview.NewFlex()
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subFlex.AddItem(cview.NewBox(), 0, 1, false)
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subFlex.AddItem(logoBox, logoWidth, 1, true)
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subFlex.AddItem(cview.NewBox(), 0, 1, false)
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flex := cview.NewFlex()
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flex.SetDirection(cview.FlexRow)
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flex.AddItem(cview.NewBox(), 0, 7, false)
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flex.AddItem(subFlex, logoHeight, 1, true)
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flex.AddItem(frame, 0, 10, false)
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return "Start", flex
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}
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