Replace RX/MIC bars with S-meter (S1-S9, +20..+60, peak-hold)

app/src/main/java/ru/ua1zbe/svxremote/MainActivity.kt

@@ -35,6 +35,7 @@ import ru.ua1zbe.svxremote.prefs.Prefs
 import ru.ua1zbe.svxremote.proto.MsgParser
 import ru.ua1zbe.svxremote.proto.ReflectorClient
 import ru.ua1zbe.svxremote.ui.PttButton
+import ru.ua1zbe.svxremote.ui.SMeterView
 import ru.ua1zbe.svxremote.ui.SoundMeterPreviewView
 
 private const val REQ_MIC = 1001
@@ -58,10 +59,8 @@ class MainActivity : Activity(), SvxService.Listener {
     private lateinit var lblTxState: TextView
     private lateinit var lblConnectHint: TextView
     private lateinit var connectZone: View
-    private lateinit var rxBarFill: View
-    private lateinit var rxDb: TextView
-    private lateinit var micBarFill: View
-    private lateinit var micDb: TextView
+    private lateinit var rxMeter: SMeterView
+    private lateinit var micMeter: SMeterView
     private lateinit var pttButton: PttButton
     private lateinit var btnSettings: ImageButton
     private lateinit var btnMonitor: ImageButton
@@ -134,10 +133,9 @@ class MainActivity : Activity(), SvxService.Listener {
         connectZone = findViewById(R.id.connect_zone)
         lblCallsign = findViewById(R.id.lbl_callsign)
         lblTg = findViewById(R.id.lbl_tg)
-        rxBarFill = findViewById(R.id.rx_bar_fill)
-        rxDb = findViewById(R.id.rx_db)
-        micBarFill = findViewById(R.id.mic_bar_fill)
-        micDb = findViewById(R.id.mic_db)
+        rxMeter = findViewById(R.id.rx_meter)
+        micMeter = findViewById(R.id.mic_meter)
+        micMeter.setColor(0xFFF85149.toInt())
         pttButton = findViewById(R.id.ptt_button)
         btnSettings = findViewById(R.id.btn_settings)
         btnMonitor = findViewById(R.id.btn_monitor)
@@ -482,17 +480,10 @@ class MainActivity : Activity(), SvxService.Listener {
 
     override fun onLevel(source: Int, level: Float) {
         mainHandler.post {
-            val db = if (level <= 0.001f) {
-                getString(R.string.meter_idle)
-            } else {
-                getString(R.string.meter_db, (level * 60).toInt().coerceIn(1, 60))
-            }
             if (source == 0) { // SRC_MIC
-                micBarFill.scaleX = level.coerceIn(0f, 1f)
-                micDb.text = db
+                micMeter.setLevel(level)
             } else { // SRC_SPEAKER
-                rxBarFill.scaleX = level.coerceIn(0f, 1f)
-                rxDb.text = db
+                rxMeter.setLevel(level)
             }
         }
     }

app/src/main/java/ru/ua1zbe/svxremote/ui/SMeterView.kt

@@ -0,0 +1,124 @@
+package ru.ua1zbe.svxremote.ui
+
+import android.content.Context
+import android.graphics.Canvas
+import android.graphics.Paint
+import android.os.Handler
+import android.os.Looper
+import android.util.AttributeSet
+import android.view.View
+import kotlin.math.roundToInt
+
+/**
+ * S-метр: полоса со шкалой S1–S9, +20…+60, заливкой уровня, белой пик-меткой
+ * (peak-hold) и цифрой текущего уровня справа («S9», «+43» или «---»).
+ * Уровень 0..1; S9 = 55% пути, +60 = 88%.
+ */
+class SMeterView @JvmOverloads constructor(
+    context: Context,
+    attrs: AttributeSet? = null
+) : View(context, attrs) {
+
+    private var fillColor = 0xFF58A6FF.toInt()
+    private val track = Paint().apply { color = 0xFF21262D.toInt() }
+    private val fill = Paint().apply { color = fillColor }
+    private val tick = Paint().apply { color = 0xFF8B949E.toInt(); strokeWidth = dp(1f) }
+    private val tickMajor = Paint().apply { color = 0xFF8B949E.toInt(); strokeWidth = dp(1.5f) }
+    private val peakPaint = Paint().apply { color = 0xFFFFFFFF.toInt(); strokeWidth = dp(2f) }
+    private val label = Paint(Paint.ANTI_ALIAS_FLAG).apply {
+        color = 0xFF8B949E.toInt()
+        textSize = sp(9)
+    }
+    private val valuePaint = Paint(Paint.ANTI_ALIAS_FLAG).apply {
+        color = 0xFFE6EDF3.toInt()
+        textSize = sp(12)
+        textAlign = Paint.Align.RIGHT
+    }
+    private val idlePaint = Paint(Paint.ANTI_ALIAS_FLAG).apply {
+        color = 0xFF8B949E.toInt()
+        textSize = sp(12)
+        textAlign = Paint.Align.RIGHT
+    }
+
+    @Volatile
+    private var target = 0f
+    private var shown = 0f
+    private var peak = 0f
+
+    private val handler = Handler(Looper.getMainLooper())
+    private val ticker = object : Runnable {
+        override fun run() {
+            // Сглаживание уровня и медленный спад пика
+            shown += (target - shown) * 0.35f
+            if (Math.abs(target - shown) < 0.002f) shown = target
+            peak = maxOf(peak * 0.985f, shown)
+            if (peak < 0.003f) peak = 0f
+            invalidate()
+            handler.postDelayed(this, 100)
+        }
+    }
+
+    fun setColor(color: Int) {
+        fillColor = color
+        fill.color = color
+    }
+
+    fun setLevel(level: Float) {
+        target = level.coerceIn(0f, 1f)
+    }
+
+    override fun onAttachedToWindow() {
+        super.onAttachedToWindow()
+        handler.post(ticker)
+    }
+
+    override fun onDetachedFromWindow() {
+        handler.removeCallbacksAndMessages(null)
+        super.onDetachedFromWindow()
+    }
+
+    private fun dp(v: Float): Float = v * resources.displayMetrics.density
+    private fun sp(v: Int): Float = v * resources.displayMetrics.scaledDensity
+
+    private fun levelText(level: Float): String = when {
+        level < 0.005f -> "---"
+        level < 0.55f -> "S${(level / 0.55f * 9f).roundToInt().coerceIn(1, 9)}"
+        else -> "+${(((level - 0.55f) / 0.45f) * 60f).roundToInt().coerceIn(1, 99)}"
+    }
+
+    override fun onDraw(canvas: Canvas) {
+        val w = width.toFloat()
+        val h = height.toFloat()
+        val left = dp(2f)
+        val right = w - dp(2f)
+        val bandTop = dp(4f)
+        val bandH = dp(14f)
+
+        // полоса
+        canvas.drawRect(left, bandTop, right, bandTop + bandH, track)
+        val lvl = shown.coerceIn(0f, 1f)
+        if (lvl > 0.002f) {
+            canvas.drawRect(left, bandTop, left + lvl * (right - left), bandTop + bandH, fill)
+        }
+
+        // деления: S1..S9, +20..+60
+        val marks = listOf("S1" to 0.11f, "S3" to 0.22f, "S5" to 0.33f, "S7" to 0.44f,
+            "S9" to 0.55f, "+20" to 0.66f, "+40" to 0.77f, "+60" to 0.88f)
+        for ((text, pos) in marks) {
+            val mx = left + pos * (right - left)
+            val major = pos == 0.55f || pos == 0.88f
+            canvas.drawLine(mx, bandTop, mx, bandTop + bandH, if (major) tickMajor else tick)
+            canvas.drawText(text, mx - dp(8f), bandTop + bandH + dp(11f), label)
+        }
+
+        // пик-метка
+        if (peak > 0.003f) {
+            val px = left + peak.coerceIn(0f, 1f) * (right - left)
+            canvas.drawLine(px, bandTop - dp(3f), px, bandTop + bandH + dp(3f), peakPaint)
+        }
+
+        // цифра уровня справа от полосы (и чуть выше делений)
+        val p = if (target < 0.005f) idlePaint else valuePaint
+        canvas.drawText(levelText(target), right, bandTop + bandH - dp(3f), p)
+    }
+}

app/src/main/res/layout/activity_main.xml

@@ -141,40 +141,22 @@
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
             android:orientation="horizontal"
-            android:gravity="center_vertical">
+            android:gravity="top">
 
             <TextView
                 android:layout_width="34dp"
                 android:layout_height="wrap_content"
+                android:layout_marginTop="6dp"
                 android:text="@string/meter_rx"
                 android:textColor="@color/text_secondary"
                 android:textSize="13sp"
                 android:textStyle="bold" />
 
-            <FrameLayout
+            <ru.ua1zbe.svxremote.ui.SMeterView
+                android:id="@+id/rx_meter"
                 android:layout_width="0dp"
-                android:layout_height="16dp"
-                android:layout_weight="1"
-                android:background="@drawable/bg_meter">
-
-                <View
-                    android:id="@+id/rx_bar_fill"
-                    android:layout_width="match_parent"
-                    android:layout_height="match_parent"
-                    android:background="@drawable/bg_meter_fill_rx"
-                    android:pivotX="0"
-                    android:scaleX="0" />
-            </FrameLayout>
-
-            <TextView
-                android:id="@+id/rx_db"
-                android:layout_width="64dp"
-                android:layout_height="wrap_content"
-                android:gravity="end"
-                android:fontFamily="monospace"
-                android:text="@string/meter_idle"
-                android:textColor="@color/text_primary"
-                android:textSize="13sp" />
+                android:layout_height="52dp"
+                android:layout_weight="1" />
         </LinearLayout>
 
         <LinearLayout
@@ -182,40 +164,22 @@
             android:layout_height="wrap_content"
             android:layout_marginTop="10dp"
             android:orientation="horizontal"
-            android:gravity="center_vertical">
+            android:gravity="top">
 
             <TextView
                 android:layout_width="34dp"
                 android:layout_height="wrap_content"
+                android:layout_marginTop="6dp"
                 android:text="@string/meter_mic"
                 android:textColor="@color/text_secondary"
                 android:textSize="13sp"
                 android:textStyle="bold" />
 
-            <FrameLayout
+            <ru.ua1zbe.svxremote.ui.SMeterView
+                android:id="@+id/mic_meter"
                 android:layout_width="0dp"
-                android:layout_height="16dp"
-                android:layout_weight="1"
-                android:background="@drawable/bg_meter">
-
-                <View
-                    android:id="@+id/mic_bar_fill"
-                    android:layout_width="match_parent"
-                    android:layout_height="match_parent"
-                    android:background="@drawable/bg_meter_fill_mic"
-                    android:pivotX="0"
-                    android:scaleX="0" />
-            </FrameLayout>
-
-            <TextView
-                android:id="@+id/mic_db"
-                android:layout_width="64dp"
-                android:layout_height="wrap_content"
-                android:gravity="end"
-                android:fontFamily="monospace"
-                android:text="@string/meter_idle"
-                android:textColor="@color/text_primary"
-                android:textSize="13sp" />
+                android:layout_height="52dp"
+                android:layout_weight="1" />
         </LinearLayout>
     </LinearLayout>