chatgui-android: PTT-оверлей — talking flow, цвет idle/talking, drag-lock

- RadioAudioEngine: StateFlow talking для реактивной подсветки кнопки
- RadioOverlayService: градиент idle/talking, drag-lock, сброс isShown при destroy
- ChatScreen: скрывать PTT-кнопку при активном оверлее, подсветка по talking

tools/chatgui-android/app/src/main/java/com/utun/chat/data/RadioAudioEngine.kt

@@ -8,6 +8,8 @@ import android.media.AudioRecord
 import android.media.AudioTrack
 import android.media.MediaRecorder
 import com.utun.chat.ChatApplication
+import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.flow.StateFlow
 
 /**
  * Полудуплексный аудио-движок рации (аналог CallAudioEngine, но с PTT).
@@ -44,6 +46,9 @@ class RadioAudioEngine {
     @Volatile private var groupId = 0L
     @Volatile private var talking = false
 
+    private val _talkingFlow = MutableStateFlow(false)
+    val talkingFlow: StateFlow<Boolean> = _talkingFlow
+
     fun isActive(): Boolean = active
 
     fun isTalking(): Boolean = talking
@@ -128,6 +133,7 @@ class RadioAudioEngine {
         if (!active) return
         active = false
         talking = false
+        _talkingFlow.value = false
 
         captureThread?.join(1000); captureThread = null
         playThread?.join(1000); playThread = null
@@ -148,6 +154,7 @@ class RadioAudioEngine {
     fun talkBegin() {
         if (!active || talking) return
         talking = true
+        _talkingFlow.value = true
         NativeLib.radioTalkBegin(groupId)
     }
 
@@ -155,6 +162,7 @@ class RadioAudioEngine {
     fun talkEnd() {
         if (!active || !talking) return
         talking = false
+        _talkingFlow.value = false
         NativeLib.radioTalkEnd(groupId)
     }
 

tools/chatgui-android/app/src/main/java/com/utun/chat/data/RadioOverlayService.kt

@@ -6,6 +6,7 @@ import android.app.Service
 import android.content.Context
 import android.content.Intent
 import android.graphics.PixelFormat
+import android.graphics.drawable.GradientDrawable
 import android.os.Build
 import android.os.IBinder
 import android.provider.Settings
@@ -13,10 +14,13 @@ import android.view.Gravity
 import android.view.LayoutInflater
 import android.view.MotionEvent
 import android.view.View
+import android.view.ViewConfiguration
 import android.view.WindowManager
 import android.widget.TextView
 import androidx.core.app.NotificationCompat
 import kotlin.math.abs
+import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.flow.StateFlow
 
 /**
  * Оверлей PTT поверх других приложений: плавающая круглая кнопка, drag-and-drop.
@@ -29,6 +33,12 @@ class RadioOverlayService : Service() {
     companion object {
         const val CHANNEL_ID = "radio_overlay"
         const val NOTIF_ID = 1002
+        const val COLOR_IDLE = 0xFF81C784.toInt()
+        const val COLOR_TALKING = 0xFFE53935.toInt()
+        const val DRAG_LOCK_MS = 300L
+
+        private val _isShown = MutableStateFlow(false)
+        val isShown: StateFlow<Boolean> = _isShown
 
         fun canDrawOverlays(ctx: Context): Boolean =
             Build.VERSION.SDK_INT < Build.VERSION_CODES.M || Settings.canDrawOverlays(ctx)
@@ -89,8 +99,12 @@ class RadioOverlayService : Service() {
             text = "\uD83C\uDF99"
             textSize = 30f
             gravity = android.view.Gravity.CENTER
-            setBackgroundColor(0xFFE74C3C.toInt())
+            background = GradientDrawable().apply {
+                shape = GradientDrawable.OVAL
+                setColor(COLOR_IDLE)
+            }
         }
+        val touchSlop = (ViewConfiguration.get(this).scaledTouchSlop * 2.5f).toInt()
         val lp = WindowManager.LayoutParams(
             WindowManager.LayoutParams.WRAP_CONTENT,
             WindowManager.LayoutParams.WRAP_CONTENT,
@@ -109,6 +123,7 @@ class RadioOverlayService : Service() {
             private var startX = 0; private var startY = 0
             private var touchX = 0f; private var touchY = 0f
             private var dragging = false
+            private var dragAllowed = true
 
             override fun onTouch(view: View, event: MotionEvent): Boolean {
                 when (event.action) {
@@ -118,16 +133,25 @@ class RadioOverlayService : Service() {
                         touchX = event.rawX
                         touchY = event.rawY
                         dragging = false
+                        dragAllowed = true
                         beginTalk()
                         return true
                     }
                     MotionEvent.ACTION_MOVE -> {
-                        if (abs(event.rawX - touchX) > 8 || abs(event.rawY - touchY) > 8) {
-                            dragging = true
-                            endTalk()
+                        if (dragging) {
                             lp.x = startX + (event.rawX - touchX).toInt()
                             lp.y = startY + (event.rawY - touchY).toInt()
                             wm.updateViewLayout(v, lp)
+                        } else if (dragAllowed) {
+                            if (event.eventTime - event.downTime > DRAG_LOCK_MS) {
+                                dragAllowed = false
+                            } else if (abs(event.rawX - touchX) > touchSlop || abs(event.rawY - touchY) > touchSlop) {
+                                dragging = true
+                                endTalk()
+                                lp.x = startX + (event.rawX - touchX).toInt()
+                                lp.y = startY + (event.rawY - touchY).toInt()
+                                wm.updateViewLayout(v, lp)
+                            }
                         }
                         return true
                     }
@@ -142,27 +166,37 @@ class RadioOverlayService : Service() {
         wm.addView(v, lp)
         overlayView = v
         params = lp
+        _isShown.value = true
         LogManager.addLog("INFO", "RadioOverlay", "overlay shown")
     }
 
     private fun beginTalk() {
         if (talking) return
         talking = true
+        updateButtonColor()
         RadioAudioEngine.instance().talkBegin()
     }
 
     private fun endTalk() {
         if (!talking) return
         talking = false
+        updateButtonColor()
         RadioAudioEngine.instance().talkEnd()
     }
 
+    private fun updateButtonColor() {
+        (overlayView?.background as? GradientDrawable)?.setColor(
+            if (talking) COLOR_TALKING else COLOR_IDLE
+        )
+    }
+
     private fun dp(v: Int): Int = (v * resources.displayMetrics.density).toInt()
 
     override fun onDestroy() {
         endTalk()
         overlayView?.let { windowManager?.removeView(it) }
         overlayView = null
+        _isShown.value = false
         LogManager.addLog("INFO", "RadioOverlay", "overlay destroyed")
         super.onDestroy()
     }

tools/chatgui-android/app/src/main/java/com/utun/chat/ui/screens/ChatScreen.kt

@@ -21,12 +21,15 @@ import androidx.compose.runtime.*
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.input.pointer.pointerInput
+import androidx.compose.ui.graphics.Color
 import androidx.compose.ui.platform.LocalContext
 import androidx.compose.ui.unit.dp
 import androidx.compose.ui.unit.sp
 import com.utun.chat.data.Channel
 import com.utun.chat.data.Message
 import com.utun.chat.data.NativeLib
+import com.utun.chat.data.RadioAudioEngine
+import com.utun.chat.data.RadioOverlayService
 import com.utun.chat.ui.components.InputBar
 import com.utun.chat.ui.components.MessageBubble
 import com.utun.chat.viewmodel.ChatViewModel
@@ -64,6 +67,8 @@ fun ChatScreen(
     /* рация */
     val radioActive by viewModel.radioActive.collectAsState()
     val radioTalking by viewModel.radioTalking.collectAsState()
+    val overlayShown by RadioOverlayService.isShown.collectAsState()
+    val localTalking by RadioAudioEngine.instance().talkingFlow.collectAsState()
 
     /* attach menu */
     var showAttachMenu by remember { mutableStateOf(false) }
@@ -173,9 +178,10 @@ fun ChatScreen(
                         onPlayVideo = { msg -> onPlayVideo(msg) })
                 }
             }
-            if (radioActive) {
+            if (radioActive && !overlayShown) {
                 RadioPttButton(
                     modifier = Modifier.align(Alignment.TopCenter).padding(top = 12.dp),
+                    isTalking = localTalking,
                     onTalkBegin = { viewModel.radioTalkBegin() },
                     onTalkEnd = { viewModel.radioTalkEnd() }
                 )
@@ -260,6 +266,7 @@ fun ChatScreen(
 @Composable
 private fun RadioPttButton(
     modifier: Modifier = Modifier,
+    isTalking: Boolean = false,
     onTalkBegin: () -> Unit,
     onTalkEnd: () -> Unit
 ) {
@@ -276,7 +283,7 @@ private fun RadioPttButton(
                 )
             },
         shape = CircleShape,
-        color = MaterialTheme.colorScheme.error,
+        color = if (isTalking) Color(0xFFE53935) else Color(0xFF81C784),
         shadowElevation = 6.dp
     ) {
         Box(contentAlignment = Alignment.Center) {