/
main.go
67 lines (57 loc) · 1.13 KB
/
main.go
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package main
import (
"github.com/BurntSushi/xgbutil"
"github.com/BurntSushi/xgbutil/ewmh"
"github.com/BurntSushi/xgbutil/icccm"
"log"
"time"
)
var (
appChan = make(chan App)
)
func getActiveApp(X *xgbutil.XUtil) (app App) {
active, err := ewmh.ActiveWindowGet(X)
if err != nil {
log.Fatal(err)
}
app.PID, err = ewmh.WmPidGet(X, active)
if err != nil {
log.Println("Couldn't get PID of window (0x%x)", active)
}
app.Name, err = ewmh.WmNameGet(X, active)
if err != nil || len(app.Name) == 0 {
app.Name, err = icccm.WmNameGet(X, active)
// If we still can't find anything, give up.
if err != nil || len(app.Name) == 0 {
app.Name = "N/A"
}
}
return
}
func sendNewNames(X *xgbutil.XUtil) {
var lastName string
for {
app := getActiveApp(X)
if app.Name != lastName {
appChan <- app
}
lastName = app.Name
time.Sleep(250 * time.Millisecond)
}
}
func main() {
X, err := xgbutil.NewConn()
if err != nil {
log.Fatal(err)
}
go sendNewNames(X)
go func() {
for {
select {
case app := <-appChan:
log.Printf("%5d - %-15s - %s\n", app.PID, app.ProcessName(), app.Name)
}
}
}()
select {}
}