Enable Region Sampling Flag for Teamfood

Enable teamfood for region sampling text protection feature that's
hidden behind a flag. This is in hopes of having more people test the feature to catch bugs and get more feedback.

Bug: 202758428
Test: manual
Change-Id: If29b183114c06ab90edaf78765a4c8eb2d8c6bb6

packages/SystemUI/src/com/android/keyguard/ClockEventController.kt

@@ -15,6 +15,7 @@
  */
 package com.android.keyguard
 
+import android.app.WallpaperManager
 import android.content.BroadcastReceiver
 import android.content.Context
 import android.content.Intent
@@ -100,9 +101,13 @@ open class ClockEventController @Inject constructor(
     private val regionSamplingEnabled = featureFlags.isEnabled(REGION_SAMPLING)
 
     private fun updateColors() {
+
         if (regionSamplingEnabled && smallRegionSampler != null && largeRegionSampler != null) {
-            smallClockIsDark = smallRegionSampler!!.currentRegionDarkness().isDark
-            largeClockIsDark = largeRegionSampler!!.currentRegionDarkness().isDark
+            val wallpaperManager = WallpaperManager.getInstance(context)
+            if (!wallpaperManager.lockScreenWallpaperExists()) {
+                smallClockIsDark = smallRegionSampler!!.currentRegionDarkness().isDark
+                largeClockIsDark = largeRegionSampler!!.currentRegionDarkness().isDark
+            }
         } else {
             val isLightTheme = TypedValue()
             context.theme.resolveAttribute(android.R.attr.isLightTheme, isLightTheme, true)

packages/SystemUI/src/com/android/systemui/flags/Flags.kt

@@ -252,7 +252,7 @@ object Flags {
 
     // 801 - region sampling
     // TODO(b/254512848): Tracking Bug
-    val REGION_SAMPLING = unreleasedFlag(801, "region_sampling")
+    val REGION_SAMPLING = unreleasedFlag(801, "region_sampling", teamfood = true)
 
     // 802 - wallpaper rendering
     // TODO(b/254512923): Tracking Bug

packages/SystemUI/src/com/android/systemui/statusbar/lockscreen/LockscreenSmartspaceController.kt

@@ -17,6 +17,7 @@
 package com.android.systemui.statusbar.lockscreen
 
 import android.app.PendingIntent
+import android.app.WallpaperManager
 import android.app.smartspace.SmartspaceConfig
 import android.app.smartspace.SmartspaceManager
 import android.app.smartspace.SmartspaceSession
@@ -382,7 +383,8 @@ class LockscreenSmartspaceController @Inject constructor(
     }
 
     private fun updateTextColorFromWallpaper() {
-        if (!regionSamplingEnabled) {
+        val wallpaperManager = WallpaperManager.getInstance(context)
+        if (!regionSamplingEnabled || wallpaperManager.lockScreenWallpaperExists()) {
             val wallpaperTextColor =
                     Utils.getColorAttrDefaultColor(context, R.attr.wallpaperTextColor)
             smartspaceViews.forEach { it.setPrimaryTextColor(wallpaperTextColor) }