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author | Michael Muré <batolettre@gmail.com> | 2019-11-03 20:47:29 +0100 |
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committer | Michael Muré <batolettre@gmail.com> | 2019-11-03 20:47:29 +0100 |
commit | cb8236c9c22007eb622b7219c58d3342f1f53d50 (patch) | |
tree | e232e5362486065d9b28bb55b9791690efb50c08 /vendor/github.com/awesome-gocui/gocui/doc.go | |
parent | 163ea9c93306c387f84ff0b85c2d8fca4c01e449 (diff) | |
download | git-bug-cb8236c9c22007eb622b7219c58d3342f1f53d50.tar.gz |
termui: migrate to awesome-gocui instead of the old fork I had
Diffstat (limited to 'vendor/github.com/awesome-gocui/gocui/doc.go')
-rw-r--r-- | vendor/github.com/awesome-gocui/gocui/doc.go | 118 |
1 files changed, 118 insertions, 0 deletions
diff --git a/vendor/github.com/awesome-gocui/gocui/doc.go b/vendor/github.com/awesome-gocui/gocui/doc.go new file mode 100644 index 00000000..ca7113fa --- /dev/null +++ b/vendor/github.com/awesome-gocui/gocui/doc.go @@ -0,0 +1,118 @@ +// 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 gocui allows to create console user interfaces. + +Create a new GUI: + + g, err := gocui.NewGui(gocui.OutputNormal) + if err != nil { + // handle error + } + defer g.Close() + + // Set GUI managers and key bindings + // ... + + if err := g.MainLoop(); err != nil && !gocui.IsQuit(err) { + // handle error + } + +Set GUI managers: + + g.SetManager(mgr1, mgr2) + +Managers are in charge of GUI's layout and can be used to build widgets. On +each iteration of the GUI's main loop, the Layout function of each configured +manager is executed. Managers are used to set-up and update the application's +main views, being possible to freely change them during execution. Also, it is +important to mention that a main loop iteration is executed on each reported +event (key-press, mouse event, window resize, etc). + +GUIs are composed by Views, you can think of it as buffers. Views implement the +io.ReadWriter interface, so you can just write to them if you want to modify +their content. The same is valid for reading. + +Create and initialize a view with absolute coordinates: + + if v, err := g.SetView("viewname", 2, 2, 22, 7); err != nil { + if !gocui.IsUnknownView(err) { + // handle error + } + fmt.Fprintln(v, "This is a new view") + // ... + } + +Views can also be created using relative coordinates: + + maxX, maxY := g.Size() + if v, err := g.SetView("viewname", maxX/2-30, maxY/2, maxX/2+30, maxY/2+2); err != nil { + // ... + } + +Configure keybindings: + + if err := g.SetKeybinding("viewname", gocui.KeyEnter, gocui.ModNone, fcn); err != nil { + // handle error + } + +gocui implements full mouse support that can be enabled with: + + g.Mouse = true + +Mouse events are handled like any other keybinding: + + if err := g.SetKeybinding("viewname", gocui.MouseLeft, gocui.ModNone, fcn); err != nil { + // handle error + } + +IMPORTANT: Views can only be created, destroyed or updated in three ways: from +the Layout function within managers, from keybinding callbacks or via +*Gui.Update(). The reason for this is that it allows gocui to be +concurrent-safe. So, if you want to update your GUI from a goroutine, you must +use *Gui.Update(). For example: + + g.Update(func(g *gocui.Gui) error { + v, err := g.View("viewname") + if err != nil { + // handle error + } + v.Clear() + fmt.Fprintln(v, "Writing from different goroutines") + return nil + }) + +By default, gocui provides a basic editing mode. This mode can be extended +and customized creating a new Editor and assigning it to *View.Editor: + + type Editor interface { + Edit(v *View, key Key, ch rune, mod Modifier) + } + +DefaultEditor can be taken as example to create your own custom Editor: + + var DefaultEditor Editor = EditorFunc(simpleEditor) + + func simpleEditor(v *View, key Key, ch rune, mod Modifier) { + switch { + case ch != 0 && mod == 0: + v.EditWrite(ch) + case key == KeySpace: + v.EditWrite(' ') + case key == KeyBackspace || key == KeyBackspace2: + v.EditDelete(true) + // ... + } + } + +Colored text: + +Views allow to add colored text using ANSI colors. For example: + + fmt.Fprintln(v, "\x1b[0;31mHello world") + +For more information, see the examples in folder "_examples/". +*/ +package gocui |