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104 lines
2.4 KiB
Go
104 lines
2.4 KiB
Go
/*
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A presentation of the tview package, implemented with tview.
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# Navigation
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The presentation will advance to the next slide when the primitive demonstrated
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in the current slide is left (usually by hitting Enter or Escape). Additionally,
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the following shortcuts can be used:
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- Ctrl-N: Jump to next slide
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- Ctrl-P: Jump to previous slide
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*/
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package main
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import (
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"fmt"
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"strconv"
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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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// Slide is a function which returns the slide's main primitive and its title.
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// It receives a "nextSlide" function which can be called to advance the
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// presentation to the next slide.
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type Slide func(nextSlide func()) (title string, content tview.Primitive)
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// The application.
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var app = tview.NewApplication()
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// Starting point for the presentation.
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func main() {
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// The presentation slides.
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slides := []Slide{
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Cover,
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Introduction,
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HelloWorld,
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InputField,
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Form,
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TextView1,
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TextView2,
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Table,
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TreeView,
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Flex,
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Grid,
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Colors,
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End,
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}
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pages := tview.NewPages()
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// The bottom row has some info on where we are.
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info := tview.NewTextView().
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SetDynamicColors(true).
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SetRegions(true).
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SetWrap(false).
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SetHighlightedFunc(func(added, removed, remaining []string) {
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pages.SwitchToPage(added[0])
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})
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// Create the pages for all slides.
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previousSlide := func() {
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slide, _ := strconv.Atoi(info.GetHighlights()[0])
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slide = (slide - 1 + len(slides)) % len(slides)
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info.Highlight(strconv.Itoa(slide)).
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ScrollToHighlight()
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}
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nextSlide := func() {
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slide, _ := strconv.Atoi(info.GetHighlights()[0])
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slide = (slide + 1) % len(slides)
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info.Highlight(strconv.Itoa(slide)).
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ScrollToHighlight()
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}
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for index, slide := range slides {
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title, primitive := slide(nextSlide)
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pages.AddPage(strconv.Itoa(index), primitive, true, index == 0)
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fmt.Fprintf(info, `%d ["%d"][darkcyan]%s[white][""] `, index+1, index, title)
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}
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info.Highlight("0")
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// Create the main layout.
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layout := tview.NewFlex().
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SetDirection(tview.FlexRow).
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AddItem(pages, 0, 1, true).
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AddItem(info, 1, 1, false)
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// Shortcuts to navigate the slides.
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app.SetInputCapture(func(event *tcell.EventKey) *tcell.EventKey {
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if event.Key() == tcell.KeyCtrlN {
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nextSlide()
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return nil
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} else if event.Key() == tcell.KeyCtrlP {
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previousSlide()
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return nil
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}
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return event
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})
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// Start the application.
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if err := app.SetRoot(layout, true).EnableMouse(true).EnablePaste(true).Run(); err != nil {
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panic(err)
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}
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}
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