feat: back handler mapping

close #15

app/src/main/java/io/github/miuzarte/scrcpyforandroid/pages/FullscreenControlScreen.kt

@@ -5,6 +5,7 @@ import android.content.Context
 import android.graphics.Rect
 import android.hardware.display.DisplayManager
 import android.util.Log
+import android.view.KeyEvent
 import android.view.Surface
 import androidx.activity.compose.BackHandler
 import androidx.activity.compose.LocalActivity
@@ -84,8 +85,6 @@ fun FullscreenControlScreen(
     onVideoSizeChanged: (width: Int, height: Int) -> Unit,
     onVideoBoundsInWindowChanged: (Rect?) -> Unit,
 ) {
-    BackHandler(enabled = true, onBack = onBack)
-
     val activity = LocalActivity.current
     val context = LocalContext.current
     val fragmentActivity = remember(activity) { activity as? FragmentActivity }
@@ -283,6 +282,25 @@ fun FullscreenControlScreen(
         }
     }
 
+    suspend fun sendBackOrTurnScreenOn() {
+        runCatching {
+            withContext(Dispatchers.IO) {
+                scrcpy.pressBackOrTurnScreenOn(KeyEvent.ACTION_DOWN)
+                scrcpy.pressBackOrTurnScreenOn(KeyEvent.ACTION_UP)
+            }
+        }.onFailure { e ->
+            Log.w("FullscreenControlPage", "send back failed", e)
+        }
+    }
+
+    BackHandler(enabled = true) {
+        if (asBundle.fullscreenControlBackToDevice && currentSession != null)
+            taskScope.launch {
+                sendBackOrTurnScreenOn()
+            }
+        else onBack()
+    }
+
     suspend fun refreshApps() {
         runCatching {
             withContext(Dispatchers.IO) {

app/src/main/java/io/github/miuzarte/scrcpyforandroid/pages/SettingsScreen.kt

@@ -405,6 +405,20 @@ fun SettingsPage(
                         )
                     },
                 )
+                SwitchPreference(
+                    title = "全屏时返回键发送到远程",
+                    summary =
+                        """
+                            启用后系统返回键会发送给设备，不再退出全屏控制页
+                            此时退出全屏需要回到桌面通过图标重新进入应用
+                        """.trimIndent(),
+                    checked = asBundle.fullscreenControlBackToDevice,
+                    onCheckedChange = {
+                        asBundle = asBundle.copy(
+                            fullscreenControlBackToDevice = it
+                        )
+                    },
+                )
                 SwitchPreference(
                     title = "全屏显示虚拟按钮",
                     summary = "在全屏控制页中显示返回键、主页键等虚拟按钮",

app/src/main/java/io/github/miuzarte/scrcpyforandroid/storage/AppSettings.kt

@@ -122,14 +122,14 @@ class AppSettings(context: Context) : Settings(context, "AppSettings") {
             intPreferencesKey("device_preview_card_height_dp"),
             1080 / 3,
         )
-        val DEVICE_TWO_PANE_CONFIG_ON_RIGHT = Pair(
-            booleanPreferencesKey("device_two_pane_config_on_right"),
-            false,
-        )
         val FULLSCREEN_CONTROL_IGNORE_SYSTEM_ROTATION_LOCK = Pair(
             booleanPreferencesKey("fullscreen_control_ignore_system_rotation_lock"),
             true,
         )
+        val FULLSCREEN_CONTROL_BACK_TO_DEVICE = Pair(
+            booleanPreferencesKey("fullscreen_control_back_to_device"),
+            false,
+        )
         val SHOW_FULLSCREEN_VIRTUAL_BUTTONS = Pair(
             booleanPreferencesKey("show_fullscreen_virtual_buttons"),
             true,
@@ -193,6 +193,10 @@ class AppSettings(context: Context) : Settings(context, "AppSettings") {
 
                     "",
         )
+        val DEVICE_TWO_PANE_CONFIG_ON_RIGHT = Pair(
+            booleanPreferencesKey("device_two_pane_config_on_right"),
+            false,
+        )
 
         // Scrcpy Server
         val CUSTOM_SERVER_URI = Pair(
@@ -278,8 +282,8 @@ class AppSettings(context: Context) : Settings(context, "AppSettings") {
         val fullscreenDebugInfo: Boolean,
         val hideSimpleConfigItems: Boolean,
         val devicePreviewCardHeightDp: Int,
-        val deviceTwoPaneConfigOnRight: Boolean,
         val fullscreenControlIgnoreSystemRotationLock: Boolean,
+        val fullscreenControlBackToDevice: Boolean,
         val showFullscreenVirtualButtons: Boolean,
         val fullscreenVirtualButtonHeightDp: Int,
         val fullscreenVirtualButtonDock: String,
@@ -293,6 +297,7 @@ class AppSettings(context: Context) : Settings(context, "AppSettings") {
         val fullscreenFloatingButtonYFraction: Float,
         val previewVirtualButtonShowText: Boolean,
         val virtualButtonsLayout: String,
+        val deviceTwoPaneConfigOnRight: Boolean,
 
         // Scrcpy Server
         val customServerUri: String,
@@ -335,8 +340,8 @@ class AppSettings(context: Context) : Settings(context, "AppSettings") {
         bundleField(FULLSCREEN_DEBUG_INFO) { it.fullscreenDebugInfo },
         bundleField(HIDE_SIMPLE_CONFIG_ITEMS) { it.hideSimpleConfigItems },
         bundleField(DEVICE_PREVIEW_CARD_HEIGHT_DP) { it.devicePreviewCardHeightDp },
-        bundleField(DEVICE_TWO_PANE_CONFIG_ON_RIGHT) { it.deviceTwoPaneConfigOnRight },
         bundleField(FULLSCREEN_CONTROL_IGNORE_SYSTEM_ROTATION_LOCK) { it.fullscreenControlIgnoreSystemRotationLock },
+        bundleField(FULLSCREEN_CONTROL_BACK_TO_DEVICE) { it.fullscreenControlBackToDevice },
         bundleField(SHOW_FULLSCREEN_VIRTUAL_BUTTONS) { it.showFullscreenVirtualButtons },
         bundleField(FULLSCREEN_VIRTUAL_BUTTON_HEIGHT_DP) { it.fullscreenVirtualButtonHeightDp },
         bundleField(FULLSCREEN_VIRTUAL_BUTTON_DOCK) { it.fullscreenVirtualButtonDock },
@@ -350,6 +355,7 @@ class AppSettings(context: Context) : Settings(context, "AppSettings") {
         bundleField(FULLSCREEN_FLOATING_BUTTON_Y_FRACTION) { it.fullscreenFloatingButtonYFraction },
         bundleField(PREVIEW_VIRTUAL_BUTTON_SHOW_TEXT) { it.previewVirtualButtonShowText },
         bundleField(VIRTUAL_BUTTONS_LAYOUT) { it.virtualButtonsLayout },
+        bundleField(DEVICE_TWO_PANE_CONFIG_ON_RIGHT) { it.deviceTwoPaneConfigOnRight },
 
         // Scrcpy Server
         bundleField(CUSTOM_SERVER_URI) { it.customServerUri },
@@ -393,9 +399,9 @@ class AppSettings(context: Context) : Settings(context, "AppSettings") {
         fullscreenDebugInfo = preferences.read(FULLSCREEN_DEBUG_INFO),
         hideSimpleConfigItems = preferences.read(HIDE_SIMPLE_CONFIG_ITEMS),
         devicePreviewCardHeightDp = preferences.read(DEVICE_PREVIEW_CARD_HEIGHT_DP),
-        deviceTwoPaneConfigOnRight = preferences.read(DEVICE_TWO_PANE_CONFIG_ON_RIGHT),
         fullscreenControlIgnoreSystemRotationLock =
             preferences.read(FULLSCREEN_CONTROL_IGNORE_SYSTEM_ROTATION_LOCK),
+        fullscreenControlBackToDevice = preferences.read(FULLSCREEN_CONTROL_BACK_TO_DEVICE),
         showFullscreenVirtualButtons = preferences.read(SHOW_FULLSCREEN_VIRTUAL_BUTTONS),
         fullscreenVirtualButtonHeightDp = preferences.read(FULLSCREEN_VIRTUAL_BUTTON_HEIGHT_DP),
         fullscreenVirtualButtonDock = preferences.read(FULLSCREEN_VIRTUAL_BUTTON_DOCK),
@@ -411,6 +417,7 @@ class AppSettings(context: Context) : Settings(context, "AppSettings") {
         fullscreenFloatingButtonYFraction = preferences.read(FULLSCREEN_FLOATING_BUTTON_Y_FRACTION),
         previewVirtualButtonShowText = preferences.read(PREVIEW_VIRTUAL_BUTTON_SHOW_TEXT),
         virtualButtonsLayout = preferences.read(VIRTUAL_BUTTONS_LAYOUT),
+        deviceTwoPaneConfigOnRight = preferences.read(DEVICE_TWO_PANE_CONFIG_ON_RIGHT),
 
         // Scrcpy Server
         customServerUri = preferences.read(CUSTOM_SERVER_URI),