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main.go
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main.go
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package main
import (
"fmt"
"image"
"os"
"os/signal"
"github.com/jezek/xgo"
)
var (
wo xgo.WindowOperations
)
func main() {
fmt.Println("hello")
d, err := xgo.OpenDisplay("")
if err != nil {
fmt.Println(err)
return
}
fmt.Printf("Display opened: %#v\n", d)
//TODO how to detect closed display?
w, err := d.NewWindow(
wo.Size(image.Pt(100, 100)),
wo.Clear(),
)
if err != nil {
fmt.Println(err)
return
}
fmt.Printf("Window created: %#v\n", w)
defer func() {
w.Destroy()
fmt.Printf("Window destroyed: %#v\n", w)
}()
//if reply, err := xproto.ListProperties(w.Screen().Display().Conn, w.Window).Reply(); err != nil {
// fmt.Printf("window %v list properties error: %v\n", w, err)
//} else {
// fmt.Printf("window %v properties: %v\n", w, reply)
//}
if err := w.Map(); err != nil {
fmt.Println(err)
return
}
fmt.Println("Window mapped")
closedCountdown := 4
stop := make(chan struct{})
done, err := w.CloseNotify(stop)
if err != nil {
fmt.Println(err)
return
}
fmt.Println("Listening to window close event")
signalChannel := make(chan os.Signal, 1)
signal.Notify(signalChannel, os.Interrupt)
fmt.Println("close window 5 times, or <ctrl-c> for instant end")
for done != nil {
select {
case <-signalChannel:
fmt.Println("\nloop select: got kill signal")
// close stop channel
close(stop)
stop = nil
signalChannel = nil
case _, ok := <-done:
fmt.Println("loop select: got something from widow done channel")
if !ok {
fmt.Println("done was closed, window manager requests to close the window")
if signalChannel != nil {
fmt.Println("closedCountdown:", closedCountdown)
if closedCountdown > 0 {
stop = make(chan struct{})
done, err = w.CloseNotify(stop)
if err != nil {
fmt.Println(err)
return
}
fmt.Println("refusing to close, listening to window close event again")
closedCountdown--
} else {
fmt.Println("you got me, I'm quitting...")
done = nil
stop = nil
}
} else {
fmt.Println("kill signal was trigerred, exit loop")
done = nil
stop = nil
}
} else {
fmt.Println("wtf? this supposed not to happen")
}
}
}
fmt.Println("end")
}