/
beep.go
73 lines (66 loc) · 1.5 KB
/
beep.go
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// Copyright 2019 The TCell Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use file except in compliance with the License.
// You may obtain a copy of the license at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// beep makes a beep every second until you press ESC
package main
import (
"fmt"
"os"
"time"
"github.com/gdamore/tcell"
)
func main() {
tcell.SetEncodingFallback(tcell.EncodingFallbackASCII)
s, e := tcell.NewScreen()
if e != nil {
fmt.Fprintf(os.Stderr, "%v\n", e)
os.Exit(1)
}
if e = s.Init(); e != nil {
fmt.Fprintf(os.Stderr, "%v\n", e)
os.Exit(1)
}
s.SetStyle(tcell.StyleDefault)
s.Clear()
quit := make(chan struct{})
go func() {
for {
ev := s.PollEvent()
switch ev := ev.(type) {
case *tcell.EventKey:
switch ev.Key() {
case tcell.KeyEscape, tcell.KeyEnter, tcell.KeyCtrlC:
close(quit)
return
case tcell.KeyCtrlL:
s.Sync()
}
case *tcell.EventResize:
s.Sync()
}
}
}()
beep(s, quit)
s.Fini()
}
func beep(s tcell.Screen, quit <-chan struct{}) {
t := time.NewTicker(time.Second)
for {
select {
case <-quit:
return
case <-t.C:
s.Beep()
}
}
}