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cmd/systray: remove new menu delay on KDE

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The new menu delay added to fix libdbusmenu systrays causes problems
with KDE. Given the state of wildly varying systray implementations, I
suspect we may need more desktop-specific hacks, so I'm setting this up
to accommodate that.

Updates #1708
Updates #14431

Change-Id: Ia101a4a3005adb9118051b3416f5a64a4a45987d
Signed-off-by: Will Norris <will@tailscale.com>
This commit is contained in:
Will Norris 2024-12-20 09:11:04 -08:00 committed by Will Norris
parent 5095efd628
commit 256da8dfb5
1 changed files with 30 additions and 7 deletions
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37
cmd/systray/systray.go
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@ -14,6 +14,7 @@ import (
"log"
"net/http"
"os"
"runtime"
"strings"
"sync"
"time"
@ -32,6 +33,10 @@ var (
chState chan ipn.State // tailscale state changes
appIcon *os.File
// newMenuDelay is the amount of time to sleep after creating a new menu,
// but before adding items to it. This works around a bug in some dbus implementations.
newMenuDelay time.Duration
)
func main() {
@ -55,6 +60,30 @@ type Menu struct {
eventCancel func() // cancel eventLoop
}
func init() {
if runtime.GOOS != "linux" {
// so far, these tweaks are only needed on Linux
return
}
desktop := strings.ToLower(os.Getenv("XDG_CURRENT_DESKTOP"))
switch desktop {
case "kde":
// KDE doesn't need a delay, and actually won't render submenus
// if we delay for more than about 400µs.
newMenuDelay = 0
default:
// Add a slight delay to ensure the menu is created before adding items.
//
// Systray implementations that use libdbusmenu sometimes process messages out of order,
// resulting in errors such as:
// (waybar:153009): LIBDBUSMENU-GTK-WARNING **: 18:07:11.551: Children but no menu, someone's been naughty with their 'children-display' property: 'submenu'
//
// See also: https://github.com/fyne-io/systray/issues/12
newMenuDelay = 100 * time.Millisecond
}
}
func onReady() {
log.Printf("starting")
ctx := context.Background()
@ -124,13 +153,7 @@ func (menu *Menu) rebuild(state state) {
}
accounts := systray.AddMenuItem(account, "")
setRemoteIcon(accounts, state.curProfile.UserProfile.ProfilePicURL)
// The dbus message about this menu item must propagate to the receiving
// end before we attach any submenu items. Otherwise the receiver may not
// yet record the parent menu item and error out.
//
// On waybar with libdbusmenu-gtk, this manifests as the following warning:
// (waybar:153009): LIBDBUSMENU-GTK-WARNING **: 18:07:11.551: Children but no menu, someone's been naughty with their 'children-display' property: 'submenu'
time.Sleep(100 * time.Millisecond)
time.Sleep(newMenuDelay)
// Aggregate all clicks into a shared channel.
menu.accountsCh = make(chan ipn.ProfileID)
for _, profile := range state.allProfiles {