displays: add configurator (Beta)

- Position, resolution, refresh, orientation, VRR
- niri, Hyprland, MangoWC
- Rely on wlr-output for reading data, compositors to write output
  configurations
- Re-organize display setting group

core/internal/server/wlroutput/manager.go

@@ -145,6 +145,7 @@ func (m *Manager) handleHead(e wlr_output_management.ZwlrOutputManagerV1HeadEven
 	handle.SetNameHandler(func(e wlr_output_management.ZwlrOutputHeadV1NameEvent) {
 		log.Debugf("WlrOutput: Head %d name: %s", headID, e.Name)
 		head.name = e.Name
+		head.ready = true
 		m.post(func() {
 			m.updateState()
 		})
@@ -251,11 +252,11 @@ func (m *Manager) handleHead(e wlr_output_management.ZwlrOutputManagerV1HeadEven
 
 		m.heads.Delete(headID)
 
-		m.post(func() {
-			m.wlMutex.Lock()
-			handle.Release()
-			m.wlMutex.Unlock()
+		m.wlMutex.Lock()
+		handle.Release()
+		m.wlMutex.Unlock()
 
+		m.post(func() {
 			m.updateState()
 		})
 	})
@@ -310,11 +311,11 @@ func (m *Manager) handleMode(headID uint32, e wlr_output_management.ZwlrOutputHe
 
 		m.modes.Delete(modeID)
 
-		m.post(func() {
-			m.wlMutex.Lock()
-			handle.Release()
-			m.wlMutex.Unlock()
+		m.wlMutex.Lock()
+		handle.Release()
+		m.wlMutex.Unlock()
 
+		m.post(func() {
 			m.updateState()
 		})
 	})
@@ -328,6 +329,10 @@ func (m *Manager) updateState() {
 			return true
 		}
 
+		if !head.ready {
+			return true
+		}
+
 		modes := make([]OutputMode, 0)
 		var currentMode *OutputMode
 

core/internal/server/wlroutput/types.go

@@ -90,6 +90,7 @@ type headState struct {
 	modeIDs        []uint32
 	adaptiveSync   uint32
 	finished       bool
+	ready          bool
 }
 
 type modeState struct {