108 lines
2.2 KiB
Go
108 lines
2.2 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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"github.com/jroimartin/gocui"
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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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g.Cursor = true
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g.Mouse = true
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g.SetManagerFunc(layout)
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if err := keybindings(g); 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 layout(g *gocui.Gui) error {
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if v, err := g.SetView("but1", 2, 2, 22, 7); err != nil {
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if err != gocui.ErrUnknownView {
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return err
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}
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v.Highlight = true
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v.SelBgColor = gocui.ColorGreen
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v.SelFgColor = gocui.ColorBlack
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fmt.Fprintln(v, "Button 1 - line 1")
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fmt.Fprintln(v, "Button 1 - line 2")
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fmt.Fprintln(v, "Button 1 - line 3")
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fmt.Fprintln(v, "Button 1 - line 4")
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}
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if v, err := g.SetView("but2", 24, 2, 44, 4); err != nil {
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if err != gocui.ErrUnknownView {
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return err
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}
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v.Highlight = true
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v.SelBgColor = gocui.ColorGreen
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v.SelFgColor = gocui.ColorBlack
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fmt.Fprintln(v, "Button 2 - line 1")
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}
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return nil
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}
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func keybindings(g *gocui.Gui) error {
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if err := g.SetKeybinding("", gocui.KeyCtrlC, gocui.ModNone, quit); err != nil {
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return err
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}
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for _, n := range []string{"but1", "but2"} {
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if err := g.SetKeybinding(n, gocui.MouseLeft, gocui.ModNone, showMsg); err != nil {
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return err
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}
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}
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if err := g.SetKeybinding("msg", gocui.MouseLeft, gocui.ModNone, delMsg); err != nil {
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return err
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}
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return nil
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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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func showMsg(g *gocui.Gui, v *gocui.View) error {
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var l string
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var err error
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if _, err := g.SetCurrentView(v.Name()); err != nil {
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return err
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}
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_, cy := v.Cursor()
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if l, err = v.Line(cy); err != nil {
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l = ""
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}
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maxX, maxY := g.Size()
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if v, err := g.SetView("msg", maxX/2-10, maxY/2, maxX/2+10, maxY/2+2); 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.Fprintln(v, l)
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}
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return nil
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}
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func delMsg(g *gocui.Gui, v *gocui.View) error {
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if err := g.DeleteView("msg"); err != nil {
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return err
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}
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return nil
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}
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