Add _examples/hello.go and update README

This commit is contained in:
Roi Martin 2016-01-30 02:54:26 +01:00
parent 82070fd113
commit 5efdece4af
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# GOCUI - Go Console User Interface [![GoDoc](https://godoc.org/github.com/jroimartin/gocui?status.svg)](https://godoc.org/github.com/jroimartin/gocui)
# GOCUI - Go Console User Interface
Minimalist Go package aimed at creating Console User Interfaces.
## Features
* Minimalist API.
* Views (the "windows" in the GUI) implement the interface io.Writer.
* Views (the "windows" in the GUI) implement the interface io.ReadWriter.
* Support for overlapping views.
* The GUI can be modified at runtime.
* The GUI can be modified at runtime (concurrent-safe).
* Global and view-level keybindings.
* Edit mode.
* Mouse support.
* Customizable edition mode.
## Installation
`go get github.com/jroimartin/gocui`
## Documentation
`godoc github.com/jroimartin/gocui` [![GoDoc](https://godoc.org/github.com/jroimartin/gocui?status.svg)](https://godoc.org/github.com/jroimartin/gocui)
## Example
```go
func layout(g *gocui.Gui) error {
maxX, maxY := g.Size()
if v, err := g.SetView("center", maxX/2-10, maxY/2, maxX/2+10, maxY/2+2); err != nil {
if err != gocui.ErrUnknownView {
return err
}
fmt.Fprintln(v, "This is an example")
}
return nil
}
func quit(g *gocui.Gui, v *gocui.View) error {
return gocui.ErrQuit
}
package main
import (
"fmt"
"log"
"github.com/jroimartin/gocui"
)
func main() {
var err error
g := gocui.NewGui()
if err := g.Init(); err != nil {
log.Panicln(err)
}
defer g.Close()
g.SetLayout(layout)
if err := g.SetKeybinding("", gocui.KeyCtrlC, gocui.ModNone, quit); err != nil {
log.Panicln(err)
}
err = g.MainLoop()
if err != nil && err != gocui.ErrQuit {
if err := g.MainLoop(); err != nil && err != gocui.ErrQuit {
log.Panicln(err)
}
}
func layout(g *gocui.Gui) error {
maxX, maxY := g.Size()
if v, err := g.SetView("hello", maxX/2-7, maxY/2, maxX/2+7, maxY/2+2); err != nil {
if err != gocui.ErrUnknownView {
return err
}
fmt.Fprintln(v, "Hello world!")
}
return nil
}
func quit(g *gocui.Gui, v *gocui.View) error {
return gocui.ErrQuit
}
```
## Concurrency
Gocui implements mechanisms to be concurrent safe. Specifically, Gui and View
objects must be updated from a layout function or via *Gui.Execute.
For more information, see _examples/goroutine.go
## Screenshots
_examples/demo.go:
@ -61,11 +75,3 @@ _examples/demo.go:
_examples/delete.go:
![_examples/delete.go](https://cloud.githubusercontent.com/assets/1223476/5992751/76ad5cc2-aa36-11e4-8204-6a90269db827.png)
## Installation
`go get github.com/jroimartin/gocui`
## Documentation
`godoc github.com/jroimartin/gocui`

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_examples/hello.go Normal file
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// Copyright 2014 The gocui Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package main
import (
"fmt"
"log"
"github.com/jroimartin/gocui"
)
func main() {
g := gocui.NewGui()
if err := g.Init(); err != nil {
log.Panicln(err)
}
defer g.Close()
g.SetLayout(layout)
if err := g.SetKeybinding("", gocui.KeyCtrlC, gocui.ModNone, quit); err != nil {
log.Panicln(err)
}
if err := g.MainLoop(); err != nil && err != gocui.ErrQuit {
log.Panicln(err)
}
}
func layout(g *gocui.Gui) error {
maxX, maxY := g.Size()
if v, err := g.SetView("hello", maxX/2-7, maxY/2, maxX/2+7, maxY/2+2); err != nil {
if err != gocui.ErrUnknownView {
return err
}
fmt.Fprintln(v, "Hello world!")
}
return nil
}
func quit(g *gocui.Gui, v *gocui.View) error {
return gocui.ErrQuit
}