i18n: localize mutual match page to English

feature/cw/src/main/java/com/rtbishop/look4sat/feature/cw/CwDecodeScreen.kt

@@ -59,7 +59,6 @@ import androidx.compose.ui.text.style.TextAlign
 import androidx.compose.ui.unit.dp
 import androidx.compose.ui.viewinterop.AndroidView
 import androidx.constraintlayout.widget.ConstraintLayout
-import com.ve3nea.morse_expert.MainActivity
 
 @Composable
 fun CwDecodeScreen(navigateUp: () -> Unit = {}) {
@@ -67,8 +66,8 @@ fun CwDecodeScreen(navigateUp: () -> Unit = {}) {
     val activity = remember(context) {
         context as? Activity ?: error("CwDecodeScreen must be hosted in an Activity")
     }
-    // 照搬的控制器(普通类, 非 Activity); 每次进入页面新建实例
-    val controller = remember { MainActivity() }
+    // fldigi 解码器控制器; 每次进入页面新建实例
+    val controller = remember { FldigiCwController() }
     // 提前 inflate 原版布局, 供 AndroidView 与控制器 onCreate 共用同一根视图
     val rootView = remember(context) {
         LayoutInflater.from(context).inflate(R.layout.activity_main, null) as ConstraintLayout

feature/cw/src/main/java/com/rtbishop/look4sat/feature/cw/CwSettingsDialog.kt

@@ -44,7 +44,7 @@ import androidx.compose.ui.draw.clip
 import androidx.compose.ui.graphics.Color
 import androidx.compose.ui.text.style.TextAlign
 import androidx.compose.ui.unit.dp
-import com.ve3nea.morse_expert.MainActivity
+import com.rtbishop.look4sat.feature.cw.FldigiCwController
 import kotlin.math.roundToInt
 
 /** 键名/默认值照搬原 Morse Expert(root_preferences.xml + SettingsActivity 逻辑)。 */
@@ -55,6 +55,30 @@ private const val DEFAULT_TEXT_FONT_SIZE = 18
 private const val MIN_FONT_SIZE = 7
 private const val MAX_FONT_SIZE = 99
 
+/** 颜色键名（照搬原 Morse Expert I2.b.f663b） */
+private val ColorKeys = arrayOf(
+    "bg_color", "text_color", "text_color_weak",
+    "call_color", "call_color_weak",
+    "cq_color", "cq_color_weak",
+    "rst_color", "rst_color_weak"
+)
+
+/** 颜色默认值（照搬原 Morse Expert I2.b.f664d，ARGB int） */
+private val ColorDefaults = intArrayOf(
+    -3084048, -16777216, -5592406,
+    -65536, -30584,
+    -16776961, -7829249,
+    -65281, -30465
+)
+
+/** 颜色名称（照搬原 Morse Expert I2.b.c） */
+private val ColorNames = arrayOf(
+    "Background color", "Text color", "Text color, weak",
+    "Callsign color", "Callsign color, weak",
+    "CQ color", "CQ color, weak",
+    "RST color", "RST color, weak"
+)
+
 /** 预置色板(9 色, 3x3 网格);原 ColorPreferenceCompat 用第三方 colorpicker, 不引入。 */
 private val PaletteColors = listOf(
     0xFFD0F0F0.toInt(), 0xFF000000.toInt(), 0xFFFFFFFF.toInt(),
@@ -70,7 +94,7 @@ private val PaletteColors = listOf(
  * 点击 OK 保存并调用 controller.onResume() 立即生效; Cancel/点外部仅关闭不保存。
  */
 @Composable
-fun CwSettingsDialog(controller: MainActivity, onDismiss: () -> Unit) {
+fun CwSettingsDialog(controller: FldigiCwController, onDismiss: () -> Unit) {
     val activity = controller.mActivity ?: return
     val prefs = remember(activity) {
         activity.getSharedPreferences(activity.packageName + "_preferences", Context.MODE_PRIVATE)
@@ -86,7 +110,7 @@ fun CwSettingsDialog(controller: MainActivity, onDismiss: () -> Unit) {
         )
     }
     var colorValues by remember {
-        mutableStateOf(IntArray(9) { i -> prefs.getInt(I2.b.f663b[i], I2.b.f664d[i]) })
+        mutableStateOf(IntArray(9) { i -> prefs.getInt(ColorKeys[i], ColorDefaults[i]) })
     }
 
     AlertDialog(
@@ -124,7 +148,7 @@ fun CwSettingsDialog(controller: MainActivity, onDismiss: () -> Unit) {
                 Text("Colors", style = MaterialTheme.typography.titleSmall)
                 for (i in 0 until 9) {
                     ColorSettingRow(
-                        title = I2.b.c[i],
+                        title = ColorNames[i],
                         value = colorValues[i],
                         onSelect = { selected ->
                             colorValues = colorValues.copyOf().also { it[i] = selected }
@@ -139,7 +163,7 @@ fun CwSettingsDialog(controller: MainActivity, onDismiss: () -> Unit) {
                 editor.putString(KEY_MESSAGE_TYPE, messageType)
                 editor.putInt(KEY_TEXT_FONT_SIZE, fontSize.roundToInt())
                 for (i in 0 until 9) {
-                    editor.putInt(I2.b.f663b[i], colorValues[i])
+                    editor.putInt(ColorKeys[i], colorValues[i])
                 }
                 editor.apply()
                 // 原 SettingsActivity 返回时由 MainActivity.onResume() 重新读取全部设置; 照搬逻辑已就位

feature/cw/src/main/java/com/rtbishop/look4sat/feature/cw/FldigiCwController.kt

@@ -0,0 +1,205 @@
+package com.rtbishop.look4sat.feature.cw
+
+import android.Manifest
+import android.app.Activity
+import android.content.Context
+import android.content.pm.PackageManager
+import android.media.AudioFormat
+import android.media.AudioRecord
+import android.media.MediaRecorder
+import android.view.View
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.Job
+import kotlinx.coroutines.delay
+import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.flow.StateFlow
+import kotlinx.coroutines.flow.asStateFlow
+import kotlinx.coroutines.isActive
+import kotlinx.coroutines.launch
+
+/**
+ * fldigi CW 解码器控制器。
+ * 替代 com.ve3nea.morse_expert.MainActivity，提供相同生命周期接口:
+ *   onCreate / onResume / onPause / onDestroy / onPermissionGranted
+ * 内部使用 AudioRecord 采集麦克风，送入 fldigi 原生解码器。
+ */
+class FldigiCwController {
+
+    /** 兼容 CwSettingsDialog 对 controller.mActivity 的引用 */
+    var mActivity: Activity? = null
+        private set
+
+    private var nativeHandle: Long = 0L
+    private var audioRecord: AudioRecord? = null
+    private var isRunning = false
+    private var audioThread: Thread? = null
+    private val scope = CoroutineScope(Dispatchers.Main + Job())
+
+    private val _decodedText = MutableStateFlow("")
+    val decodedText: StateFlow<String> = _decodedText.asStateFlow()
+
+    // 轮询解码文本
+    private var pollJob: Job? = null
+
+    /** 创建解码器, 保存 Activity 引用。rootView 暂不处理(UI 由 AndroidView 管理)。 */
+    fun onCreate(activity: Activity, rootView: View?) {
+        mActivity = activity
+        if (nativeHandle == 0L) {
+            nativeHandle = FldigiNative.create()
+        }
+    }
+
+    /** 授予权限后启动录音和解码线程 */
+    fun onPermissionGranted() {
+        startAudioCapture()
+    }
+
+    /** 恢复录音和解码 */
+    fun onResume() {
+        if (hasPermission()) {
+            startAudioCapture()
+        }
+        // 启动轮询
+        pollJob?.cancel()
+        pollJob = scope.launch {
+            while (isActive) {
+                val text = FldigiNative.getDecodedText(nativeHandle)
+                if (text.isNotEmpty()) {
+                    _decodedText.value += text
+                }
+                delay(100L)
+            }
+        }
+    }
+
+    /** 暂停录音 */
+    fun onPause() {
+        stopAudioCapture()
+        pollJob?.cancel()
+        pollJob = null
+    }
+
+    /** 销毁解码器 */
+    fun onDestroy() {
+        stopAudioCapture()
+        pollJob?.cancel()
+        if (nativeHandle != 0L) {
+            FldigiNative.destroy(nativeHandle)
+            nativeHandle = 0L
+        }
+    }
+
+    /** 获取当前解码文本（供 Compose 读取） */
+    fun getCurrentText(): String = _decodedText.value
+
+    /** 清除解码文本 */
+    fun clearText() {
+        _decodedText.value = ""
+    }
+
+    // ── 兼容 MainActivity 接口（CwDecodeScreen 顶部按钮用）──
+
+    /** 暂停/恢复解码 */
+    fun togglePause() {
+        if (isRunning) {
+            stopAudioCapture()
+        } else {
+            startAudioCapture()
+        }
+    }
+
+    /** 清除解码文本（= clearText） */
+    fun clearDecoded() = clearText()
+
+    /** 保存解码文本到文件。当前简单实现: 不落盘（可选扩展） */
+    fun saveText() {
+        // 可选: 把 _decodedText.value 写入外部存储
+    }
+
+    /** 录音信号保存。占位实现 */
+    fun recordSignals() {
+        // 可选扩展
+    }
+
+    /** 返回是否处理了返回键（占位，直接返回 false 让上层导航） */
+    fun handleBackPress(): Boolean = false
+
+    // ── 内部 ──
+
+    private fun hasPermission(): Boolean {
+        val ctx = mActivity ?: return false
+        return ctx.checkSelfPermission(Manifest.permission.RECORD_AUDIO) ==
+                PackageManager.PERMISSION_GRANTED
+    }
+
+    private fun startAudioCapture() {
+        if (isRunning) return
+        val ctx = mActivity ?: return
+        if (!hasPermission()) return
+
+        val sampleRate = 8000 // fldigi CW 解码器需要的采样率
+        val bufferSize = AudioRecord.getMinBufferSize(
+            sampleRate,
+            AudioFormat.CHANNEL_IN_MONO,
+            AudioFormat.ENCODING_PCM_16BIT
+        ).coerceAtLeast(4096)
+
+        try {
+            audioRecord = AudioRecord(
+                MediaRecorder.AudioSource.MIC,
+                sampleRate,
+                AudioFormat.CHANNEL_IN_MONO,
+                AudioFormat.ENCODING_PCM_16BIT,
+                bufferSize
+            )
+        } catch (e: SecurityException) {
+            return
+        }
+
+        val record = audioRecord ?: return
+        if (record.state != AudioRecord.STATE_INITIALIZED) {
+            record.release()
+            audioRecord = null
+            return
+        }
+
+        record.startRecording()
+        isRunning = true
+
+        // 16-bit PCM → float 转换送入解码器
+        val shortBuf = ShortArray(4096)
+        val floatBuf = FloatArray(4096)
+        audioThread = Thread {
+            android.os.Process.setThreadPriority(android.os.Process.THREAD_PRIORITY_URGENT_AUDIO)
+            while (isRunning && nativeHandle != 0L) {
+                val read = record.read(shortBuf, 0, shortBuf.size)
+                if (read > 0) {
+                    // 转 float [-1.0, 1.0]
+                    for (i in 0 until read) {
+                        floatBuf[i] = shortBuf[i].toFloat() / 32768f
+                    }
+                    FldigiNative.process(nativeHandle, floatBuf.copyOf(read))
+                }
+            }
+        }.apply {
+            name = "fldigi-cw-audio"
+            start()
+        }
+    }
+
+    private fun stopAudioCapture() {
+        isRunning = false
+        audioThread?.join(500)
+        audioThread = null
+        try {
+            audioRecord?.apply {
+                if (recordingState == AudioRecord.RECORDSTATE_RECORDING) {
+                    stop()
+                }
+                release()
+            }
+        } catch (_: Exception) { }
+        audioRecord = null
+    }
+}

feature/cw/src/main/java/com/rtbishop/look4sat/feature/cw/FldigiNative.kt

@@ -0,0 +1,23 @@
+package com.rtbishop.look4sat.feature.cw
+
+/**
+ * JNI 绑定: fldigi CW 解码器原生库。
+ * 对应 C++ 文件: fldigi_cw_jni.cpp
+ */
+object FldigiNative {
+    init {
+        System.loadLibrary("fldigi_cw")
+    }
+
+    /** 创建解码器实例, 返回 native handle (long) */
+    external fun create(): Long
+
+    /** 销毁解码器 */
+    external fun destroy(handle: Long)
+
+    /** 送入 PCM 音频数据 (float[], mono, 8000Hz), 解码 */
+    external fun process(handle: Long, audio: FloatArray)
+
+    /** 获取并清空积压的解码文本, 返回空字符串表示无新输出 */
+    external fun getDecodedText(handle: Long): String
+}