Tint lock icon when entering ambient mode

Lock screen might be using the light theme, where icons are black.
This would make the auth icon invisible in AOD.

Test: manual
Bug: 111405682
Change-Id: Ifc992348ea81f3ecadd4b1f02e5aff128b6adf04

3 files changed, 19 insertions, 4 deletions

diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/KeyguardAffordanceView.java b/packages/SystemUI/src/com/android/systemui/statusbar/KeyguardAffordanceView.java
index 9d773edec551..18151d0e794a 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/KeyguardAffordanceView.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/KeyguardAffordanceView.java
@@ -54,10 +54,10 @@ public class KeyguardAffordanceView extends ImageView {
     public static final float MAX_ICON_SCALE_AMOUNT = 1.5f;
     public static final float MIN_ICON_SCALE_AMOUNT = 0.8f;
 
+    protected final int mDarkIconColor;
+    protected final int mNormalColor;
     private final int mMinBackgroundRadius;
     private final Paint mCirclePaint;
-    private final int mDarkIconColor;
-    private final int mNormalColor;
     private final ArgbEvaluator mColorInterpolator;
     private final FlingAnimationUtils mFlingAnimationUtils;
     private float mCircleRadius;
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/phone/KeyguardBottomAreaView.java b/packages/SystemUI/src/com/android/systemui/statusbar/phone/KeyguardBottomAreaView.java
index 538a260b4b8e..ae1353dd220c 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/phone/KeyguardBottomAreaView.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/phone/KeyguardBottomAreaView.java
@@ -561,6 +561,7 @@ public class KeyguardBottomAreaView extends FrameLayout implements View.OnClickL
         }
         mDarkAmount = darkAmount;
         mIndicationArea.setAlpha(1f - darkAmount);
+        mLockIcon.setDarkAmount(darkAmount);
     }
 
     private static boolean isSuccessfulLaunch(int result) {
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/phone/LockIcon.java b/packages/SystemUI/src/com/android/systemui/statusbar/phone/LockIcon.java
index 2edc294084cd..d5067b5c7e8c 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/phone/LockIcon.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/phone/LockIcon.java
@@ -18,13 +18,14 @@ package com.android.systemui.statusbar.phone;
 
 import android.content.Context;
 import android.content.res.Configuration;
+import android.graphics.Color;
+import android.graphics.PorterDuff;
 import android.graphics.drawable.AnimatedVectorDrawable;
 import android.graphics.drawable.Drawable;
-import android.graphics.drawable.InsetDrawable;
 import android.util.AttributeSet;
-import android.view.View;
 import android.view.accessibility.AccessibilityNodeInfo;
 
+import com.android.internal.graphics.ColorUtils;
 import com.android.keyguard.KeyguardUpdateMonitor;
 import com.android.systemui.R;
 import com.android.systemui.statusbar.KeyguardAffordanceView;
@@ -58,6 +59,7 @@ public class LockIcon extends KeyguardAffordanceView implements OnUserInfoChange
     private int mDensity;
 
     private final Runnable mDrawOffTimeout = () -> update(true /* forceUpdate */);
+    private float mDarkAmount;
 
     public LockIcon(Context context, AttributeSet attrs) {
         super(context, attrs);
@@ -130,6 +132,7 @@ public class LockIcon extends KeyguardAffordanceView implements OnUserInfoChange
                     ? (AnimatedVectorDrawable) icon
                     : null;
             setImageDrawable(icon, false);
+            updateDarkTint();
             if (mHasFaceUnlockIcon) {
                 announceForAccessibility(getContext().getString(
                     R.string.accessibility_scanning_face));
@@ -259,4 +262,15 @@ public class LockIcon extends KeyguardAffordanceView implements OnUserInfoChange
             return STATE_LOCKED;
         }
     }
+
+    public void setDarkAmount(float darkAmount) {
+        mDarkAmount = darkAmount;
+        updateDarkTint();
+    }
+
+    private void updateDarkTint() {
+        Drawable drawable = getDrawable().mutate();
+        int color = ColorUtils.blendARGB(Color.TRANSPARENT, Color.WHITE, mDarkAmount);
+        drawable.setColorFilter(color, PorterDuff.Mode.SRC_ATOP);
+    }
 }