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108 lines
2.3 KiB
108 lines
2.3 KiB
/* |
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A presentation of the cview package, implemented with cview. |
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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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"flag" |
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"fmt" |
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"log" |
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"net/http" |
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_ "net/http/pprof" |
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"strconv" |
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"code.rocketnine.space/tslocum/cview" |
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"github.com/gdamore/tcell/v2" |
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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 cview.Primitive) |
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// The application. |
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var app = cview.NewApplication() |
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// Starting point for the presentation. |
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func main() { |
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var debugPort int |
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flag.IntVar(&debugPort, "debug", 0, "port to serve debug info") |
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flag.Parse() |
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if debugPort > 0 { |
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go func() { |
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log.Fatal(http.ListenAndServe(fmt.Sprintf("localhost:%d", debugPort), nil)) |
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}() |
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} |
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app.EnableMouse(true) |
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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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Colors, |
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TextView1, |
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TextView2, |
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InputField, |
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Slider, |
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Form, |
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Table, |
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TreeView, |
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Flex, |
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Grid, |
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Window, |
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End, |
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} |
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panels := cview.NewTabbedPanels() |
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// Create the pages for all slides. |
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previousSlide := func() { |
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slide, _ := strconv.Atoi(panels.GetCurrentTab()) |
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slide = (slide - 1 + len(slides)) % len(slides) |
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panels.SetCurrentTab(strconv.Itoa(slide)) |
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} |
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nextSlide := func() { |
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slide, _ := strconv.Atoi(panels.GetCurrentTab()) |
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slide = (slide + 1) % len(slides) |
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panels.SetCurrentTab(strconv.Itoa(slide)) |
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} |
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cursor := 0 |
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var slideRegions []int |
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for index, slide := range slides { |
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slideRegions = append(slideRegions, cursor) |
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title, primitive := slide(nextSlide) |
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panels.AddTab(strconv.Itoa(index), title, primitive) |
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cursor += len(title) + 4 |
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} |
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panels.SetCurrentTab("0") |
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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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} else if event.Key() == tcell.KeyCtrlP { |
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previousSlide() |
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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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app.SetRoot(panels, true) |
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if err := app.Run(); err != nil { |
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panic(err) |
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} |
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}
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