Merge "Don't blend front scrim on AOD" into tm-dev am: dc65d350fd

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/18366805

Change-Id: Iece29cf380843c5ab108709e1576d7cced612b45
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>

packages/SystemUI/src/com/android/systemui/scrim/ScrimView.java

@@ -58,6 +58,7 @@ public class ScrimView extends View {
     private Drawable mDrawable;
     private PorterDuffColorFilter mColorFilter;
     private int mTintColor;
+    private boolean mBlendWithMainColor = true;
     private Runnable mChangeRunnable;
     private Executor mChangeRunnableExecutor;
     private Executor mExecutor;
@@ -191,6 +192,19 @@ public class ScrimView extends View {
         setTint(color, false);
     }
 
+    /**
+     * The call to {@link #setTint} will blend with the main color, with the amount
+     * determined by the alpha of the tint. Set to false to avoid this blend.
+     */
+    public void setBlendWithMainColor(boolean blend) {
+        mBlendWithMainColor = blend;
+    }
+
+    /** @return true if blending tint color with main color */
+    public boolean shouldBlendWithMainColor() {
+        return mBlendWithMainColor;
+    }
+
     /**
      * Tints this view, optionally animating it.
      * @param color The color.
@@ -211,8 +225,11 @@ public class ScrimView extends View {
             // Optimization to blend colors and avoid a color filter
             ScrimDrawable drawable = (ScrimDrawable) mDrawable;
             float tintAmount = Color.alpha(mTintColor) / 255f;
-            int mainTinted = ColorUtils.blendARGB(mColors.getMainColor(), mTintColor,
+
-                    tintAmount);
+            int mainTinted = mTintColor;
+            if (mBlendWithMainColor) {
+                mainTinted = ColorUtils.blendARGB(mColors.getMainColor(), mTintColor, tintAmount);
+            }
             drawable.setColor(mainTinted, animated);
         } else {
             boolean hasAlpha = Color.alpha(mTintColor) != 0;

packages/SystemUI/src/com/android/systemui/statusbar/phone/ScrimController.java

@@ -402,6 +402,8 @@ public class ScrimController implements ViewTreeObserver.OnPreDrawListener, Dump
         mScrimBehind.setFocusable(!state.isLowPowerState());
         mNotificationsScrim.setFocusable(!state.isLowPowerState());
 
+        mScrimInFront.setBlendWithMainColor(state.shouldBlendWithMainColor());
+
         // Cancel blanking transitions that were pending before we requested a new state
         if (mPendingFrameCallback != null) {
             mScrimBehind.removeCallbacks(mPendingFrameCallback);

packages/SystemUI/src/com/android/systemui/statusbar/phone/ScrimState.java

@@ -203,6 +203,11 @@ public enum ScrimState {
         public boolean isLowPowerState() {
             return true;
         }
+
+        @Override
+        public boolean shouldBlendWithMainColor() {
+            return false;
+        }
     },
 
     /**
@@ -325,6 +330,13 @@ public enum ScrimState {
     public void prepare(ScrimState previousState) {
     }
 
+    /**
+     * Whether a particular state should enable blending with extracted theme colors.
+     */
+    public boolean shouldBlendWithMainColor() {
+        return true;
+    }
+
     public float getFrontAlpha() {
         return mFrontAlpha;
     }
@@ -422,4 +434,4 @@ public enum ScrimState {
     public void setClipQsScrim(boolean clipsQsScrim) {
         mClipQsScrim = clipsQsScrim;
     }
-}
+}

packages/SystemUI/tests/src/com/android/systemui/statusbar/phone/ScrimControllerTest.java

@@ -1490,6 +1490,13 @@ public class ScrimControllerTest extends SysuiTestCase {
         assertAlphaAfterExpansion(mNotificationsScrim, 0f, expansion);
     }
 
+    @Test
+    public void aodStateSetsFrontScrimToNotBlend() {
+        mScrimController.transitionTo(ScrimState.AOD);
+        Assert.assertFalse("Front scrim should not blend with main color",
+                mScrimInFront.shouldBlendWithMainColor());
+    }
+
     private void assertAlphaAfterExpansion(ScrimView scrim, float expectedAlpha, float expansion) {
         mScrimController.setRawPanelExpansionFraction(expansion);
         finishAnimationsImmediately();