88 lines
1.6 KiB
Go
88 lines
1.6 KiB
Go
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// Copyright 2014 The gocui Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package main
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import (
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"fmt"
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"log"
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"strings"
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"github.com/jroimartin/gocui"
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)
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type Label struct {
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name string
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w, h int
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body string
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}
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func NewLabel(name string, body string) *Label {
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lines := strings.Split(body, "\n")
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w := 0
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for _, l := range lines {
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if len(l) > w {
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w = len(l)
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}
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}
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h := len(lines) + 1
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w = w + 1
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return &Label{name: name, w: w, h: h, body: body}
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}
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func (w *Label) Layout(g *gocui.Gui) error {
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v, err := g.SetView(w.name, 0, 0, w.w, w.h)
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if err != nil {
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if err != gocui.ErrUnknownView {
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return err
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}
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fmt.Fprint(v, w.body)
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}
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return nil
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}
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func flowLayout(g *gocui.Gui) error {
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views := g.Views()
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x := 0
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for _, v := range views {
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w, h := v.Size()
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_, err := g.SetView(v.Name(), x, 0, x+w+1, h+1)
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if err != nil && err != gocui.ErrUnknownView {
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return err
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}
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x += w + 2
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}
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return nil
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}
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func main() {
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g, err := gocui.NewGui(gocui.OutputNormal)
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if err != nil {
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log.Panicln(err)
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}
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defer g.Close()
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l1 := NewLabel("l1", "This")
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l2 := NewLabel("l2", "is")
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l3 := NewLabel("l3", "a")
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l4 := NewLabel("l4", "flow\nlayout")
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l5 := NewLabel("l5", "!")
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fl := gocui.ManagerFunc(flowLayout)
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g.SetManager(l1, l2, l3, l4, l5, fl)
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if err := g.SetKeybinding("", gocui.KeyCtrlC, gocui.ModNone, quit); err != nil {
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log.Panicln(err)
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}
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if err := g.MainLoop(); err != nil && err != gocui.ErrQuit {
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log.Panicln(err)
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}
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}
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func quit(g *gocui.Gui, v *gocui.View) error {
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return gocui.ErrQuit
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}
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