Replacing setAlphaComponent with setAlphaComponentBound for better animation interpolation

setAlphaComponent throws expetion for invalid range, which can cause brashes in overshoot
interpolation

Bug: 118390004
Change-Id: Ic9c5ff3d660eba353b982c4c47ccfaf329b3e296

14 files changed, 80 insertions, 47 deletions

diff --git a/iconloaderlib/src/com/android/launcher3/icons/BaseIconFactory.java b/iconloaderlib/src/com/android/launcher3/icons/BaseIconFactory.java
index 681c03c7c..243903cc8 100644
--- a/iconloaderlib/src/com/android/launcher3/icons/BaseIconFactory.java
+++ b/iconloaderlib/src/com/android/launcher3/icons/BaseIconFactory.java
@@ -18,8 +18,6 @@ import android.os.Build;
 import android.os.Process;
 import android.os.UserHandle;
 
-import com.android.launcher3.icons.R;
-
 import static android.graphics.Paint.DITHER_FLAG;
 import static android.graphics.Paint.FILTER_BITMAP_FLAG;
 import static com.android.launcher3.icons.ShadowGenerator.BLUR_FACTOR;
@@ -81,6 +79,7 @@ public class BaseIconFactory {
         return mNormalizer;
     }
 
+    @SuppressWarnings("deprecation")
     public BitmapInfo createIconBitmap(Intent.ShortcutIconResource iconRes) {
         try {
             Resources resources = mPm.getResourcesForApplication(iconRes.packageName);
@@ -184,8 +183,7 @@ public class BaseIconFactory {
             RectF outIconBounds, float[] outScale) {
         float scale = 1f;
 
-        if (shrinkNonAdaptiveIcons) {
-            boolean[] outShape = new boolean[1];
+        if (shrinkNonAdaptiveIcons && ATLEAST_OREO) {
             if (mWrapperIcon == null) {
                 mWrapperIcon = mContext.getDrawable(R.drawable.adaptive_icon_drawable_wrapper)
                         .mutate();
@@ -193,7 +191,7 @@ public class BaseIconFactory {
             AdaptiveIconDrawable dr = (AdaptiveIconDrawable) mWrapperIcon;
             dr.setBounds(0, 0, 1, 1);
             scale = getNormalizer().getScale(icon, outIconBounds);
-            if (ATLEAST_OREO && !(icon instanceof AdaptiveIconDrawable)) {
+            if (!(icon instanceof AdaptiveIconDrawable)) {
                 FixedScaleDrawable fsd = ((FixedScaleDrawable) dr.getForeground());
                 fsd.setDrawable(icon);
                 fsd.setScale(scale);
diff --git a/iconloaderlib/src/com/android/launcher3/icons/GraphicsUtils.java b/iconloaderlib/src/com/android/launcher3/icons/GraphicsUtils.java
new file mode 100644
index 000000000..b096cecb5
--- /dev/null
+++ b/iconloaderlib/src/com/android/launcher3/icons/GraphicsUtils.java
@@ -0,0 +1,36 @@
+/*
+ * Copyright (C) 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.android.launcher3.icons;
+
+import androidx.annotation.ColorInt;
+
+public class GraphicsUtils {
+
+    /**
+     * Set the alpha component of {@code color} to be {@code alpha}. Unlike the support lib version,
+     * it bounds the alpha in valid range instead of throwing an exception to allow for safer
+     * interpolation of color animations
+     */
+    @ColorInt
+    public static int setColorAlphaBound(int color, int alpha) {
+        if (alpha < 0) {
+            alpha = 0;
+        } else if (alpha > 255) {
+            alpha = 255;
+        }
+        return (color & 0x00ffffff) | (alpha << 24);
+    }
+}
diff --git a/iconloaderlib/src/com/android/launcher3/icons/ShadowGenerator.java b/iconloaderlib/src/com/android/launcher3/icons/ShadowGenerator.java
index 6491b7ec1..455c58c91 100644
--- a/iconloaderlib/src/com/android/launcher3/icons/ShadowGenerator.java
+++ b/iconloaderlib/src/com/android/launcher3/icons/ShadowGenerator.java
@@ -16,6 +16,8 @@
 
 package com.android.launcher3.icons;
 
+import static com.android.launcher3.icons.GraphicsUtils.setColorAlphaBound;
+
 import android.graphics.Bitmap;
 import android.graphics.Bitmap.Config;
 import android.graphics.BlurMaskFilter;
@@ -27,8 +29,6 @@ import android.graphics.PorterDuff;
 import android.graphics.PorterDuffXfermode;
 import android.graphics.RectF;
 
-import androidx.core.graphics.ColorUtils;
-
 /**
  * Utility class to add shadows to bitmaps.
  */
@@ -142,12 +142,12 @@ public class ShadowGenerator {
 
             // Key shadow
             p.setShadowLayer(shadowBlur, 0, keyShadowDistance,
-                    ColorUtils.setAlphaComponent(Color.BLACK, keyShadowAlpha));
+                    setColorAlphaBound(Color.BLACK, keyShadowAlpha));
             c.drawRoundRect(bounds, radius, radius, p);
 
             // Ambient shadow
             p.setShadowLayer(shadowBlur, 0, 0,
-                    ColorUtils.setAlphaComponent(Color.BLACK, ambientShadowAlpha));
+                    setColorAlphaBound(Color.BLACK, ambientShadowAlpha));
             c.drawRoundRect(bounds, radius, radius, p);
 
             if (Color.alpha(color) < 255) {
diff --git a/quickstep/src/com/android/quickstep/views/ShelfScrimView.java b/quickstep/src/com/android/quickstep/views/ShelfScrimView.java
index 896557550..d2b3bcc17 100644
--- a/quickstep/src/com/android/quickstep/views/ShelfScrimView.java
+++ b/quickstep/src/com/android/quickstep/views/ShelfScrimView.java
@@ -18,8 +18,7 @@ package com.android.quickstep.views;
 import static com.android.launcher3.LauncherState.OVERVIEW;
 import static com.android.launcher3.anim.Interpolators.ACCEL;
 import static com.android.launcher3.anim.Interpolators.LINEAR;
-
-import static androidx.core.graphics.ColorUtils.setAlphaComponent;
+import static com.android.launcher3.icons.GraphicsUtils.setColorAlphaBound;
 
 import android.content.Context;
 import android.graphics.Canvas;
@@ -141,7 +140,7 @@ public class ShelfScrimView extends ScrimView {
 
             int alpha = Math.round(Utilities.mapToRange(
                     mProgress, mMidProgress, 1, mMidAlpha, 0, ACCEL));
-            mShelfColor = setAlphaComponent(mEndScrim, alpha);
+            mShelfColor = setColorAlphaBound(mEndScrim, alpha);
         } else {
             mDragHandleOffset += mShiftRange * (mMidProgress - mProgress);
 
@@ -149,12 +148,12 @@ public class ShelfScrimView extends ScrimView {
             int alpha = Math.round(
                     Utilities.mapToRange(mProgress, (float) 0, mMidProgress, (float) mEndAlpha,
                             (float) mMidAlpha, Interpolators.clampToProgress(ACCEL, 0.5f, 1f)));
-            mShelfColor = setAlphaComponent(mEndScrim, alpha);
+            mShelfColor = setColorAlphaBound(mEndScrim, alpha);
 
             int remainingScrimAlpha = Math.round(
                     Utilities.mapToRange(mProgress, (float) 0, mMidProgress, mMaxScrimAlpha,
                             (float) 0, LINEAR));
-            mRemainingScreenColor = setAlphaComponent(mScrimColor, remainingScrimAlpha);
+            mRemainingScreenColor = setColorAlphaBound(mScrimColor, remainingScrimAlpha);
         }
     }
 
diff --git a/src/com/android/launcher3/BubbleTextView.java b/src/com/android/launcher3/BubbleTextView.java
index 8513d63a7..455fd1866 100644
--- a/src/com/android/launcher3/BubbleTextView.java
+++ b/src/com/android/launcher3/BubbleTextView.java
@@ -16,6 +16,8 @@
 
 package com.android.launcher3;
 
+import static com.android.launcher3.icons.GraphicsUtils.setColorAlphaBound;
+
 import android.animation.Animator;
 import android.animation.AnimatorListenerAdapter;
 import android.animation.ObjectAnimator;
@@ -53,8 +55,6 @@ import com.android.launcher3.model.PackageItemInfo;
 
 import java.text.NumberFormat;
 
-import androidx.core.graphics.ColorUtils;
-
 /**
  * TextView that draws a bubble behind the text. We cannot use a LineBackgroundSpan
  * because we want to make the bubble taller than the text and TextView's clip is
@@ -473,8 +473,7 @@ public class BubbleTextView extends TextView implements ItemInfoUpdateReceiver,
             // Special case to prevent text shadows in high contrast mode
             return Color.TRANSPARENT;
         }
-        return ColorUtils.setAlphaComponent(
-                mTextColor, Math.round(Color.alpha(mTextColor) * mTextAlpha));
+        return setColorAlphaBound(mTextColor, Math.round(Color.alpha(mTextColor) * mTextAlpha));
     }
 
     /**
diff --git a/src/com/android/launcher3/folder/FolderAnimationManager.java b/src/com/android/launcher3/folder/FolderAnimationManager.java
index fa890b99d..2461e284d 100644
--- a/src/com/android/launcher3/folder/FolderAnimationManager.java
+++ b/src/com/android/launcher3/folder/FolderAnimationManager.java
@@ -20,6 +20,7 @@ import static com.android.launcher3.BubbleTextView.TEXT_ALPHA_PROPERTY;
 import static com.android.launcher3.LauncherAnimUtils.SCALE_PROPERTY;
 import static com.android.launcher3.folder.ClippedFolderIconLayoutRule.MAX_NUM_ITEMS_IN_PREVIEW;
 import static com.android.launcher3.folder.FolderShape.getShape;
+import static com.android.launcher3.icons.GraphicsUtils.setColorAlphaBound;
 
 import android.animation.Animator;
 import android.animation.AnimatorListenerAdapter;
@@ -46,8 +47,6 @@ import com.android.launcher3.util.Themes;
 
 import java.util.List;
 
-import androidx.core.graphics.ColorUtils;
-
 /**
  * Manages the opening and closing animations for a {@link Folder}.
  *
@@ -153,8 +152,8 @@ public class FolderAnimationManager {
 
         // Set up the Folder background.
         final int finalColor = Themes.getAttrColor(mContext, android.R.attr.colorPrimary);
-        final int initialColor =
-                ColorUtils.setAlphaComponent(finalColor, mPreviewBackground.getBackgroundAlpha());
+        final int initialColor = setColorAlphaBound(
+                finalColor, mPreviewBackground.getBackgroundAlpha());
         mFolderBackground.mutate();
         mFolderBackground.setColor(mIsOpening ? initialColor : finalColor);
 
diff --git a/src/com/android/launcher3/folder/PreviewBackground.java b/src/com/android/launcher3/folder/PreviewBackground.java
index 8443953bd..f2683a5f9 100644
--- a/src/com/android/launcher3/folder/PreviewBackground.java
+++ b/src/com/android/launcher3/folder/PreviewBackground.java
@@ -17,6 +17,7 @@
 package com.android.launcher3.folder;
 
 import static com.android.launcher3.folder.FolderShape.getShape;
+import static com.android.launcher3.icons.GraphicsUtils.setColorAlphaBound;
 
 import android.animation.Animator;
 import android.animation.AnimatorListenerAdapter;
@@ -41,8 +42,6 @@ import com.android.launcher3.Launcher;
 import com.android.launcher3.R;
 import com.android.launcher3.util.Themes;
 
-import androidx.core.graphics.ColorUtils;
-
 /**
  * This object represents a FolderIcon preview background. It stores drawing / measurement
  * information, handles drawing, and animation (accept state <--> rest state).
@@ -189,7 +188,7 @@ public class PreviewBackground {
 
     public int getBgColor() {
         int alpha = (int) Math.min(MAX_BG_OPACITY, BG_OPACITY * mColorMultiplier);
-        return ColorUtils.setAlphaComponent(mBgColor, alpha);
+        return setColorAlphaBound(mBgColor, alpha);
     }
 
     public int getBadgeColor() {
@@ -275,7 +274,7 @@ public class PreviewBackground {
     }
 
     public void drawBackgroundStroke(Canvas canvas) {
-        mPaint.setColor(ColorUtils.setAlphaComponent(mBgColor, mStrokeAlpha));
+        mPaint.setColor(setColorAlphaBound(mBgColor, mStrokeAlpha));
         mPaint.setStyle(Paint.Style.STROKE);
         mPaint.setStrokeWidth(mStrokeWidth);
 
diff --git a/src/com/android/launcher3/graphics/IconPalette.java b/src/com/android/launcher3/graphics/IconPalette.java
index cda07c31a..3d4a1001a 100644
--- a/src/com/android/launcher3/graphics/IconPalette.java
+++ b/src/com/android/launcher3/graphics/IconPalette.java
@@ -16,6 +16,8 @@
 
 package com.android.launcher3.graphics;
 
+import static com.android.launcher3.icons.GraphicsUtils.setColorAlphaBound;
+
 import android.app.Notification;
 import android.content.Context;
 import android.graphics.Color;
@@ -147,7 +149,7 @@ public class IconPalette {
     }
 
     public static int getMutedColor(int color, float whiteScrimAlpha) {
-        int whiteScrim = ColorUtils.setAlphaComponent(Color.WHITE, (int) (255 * whiteScrimAlpha));
+        int whiteScrim = setColorAlphaBound(Color.WHITE, (int) (255 * whiteScrimAlpha));
         return ColorUtils.compositeColors(whiteScrim, color);
     }
 }
diff --git a/src/com/android/launcher3/graphics/WorkspaceAndHotseatScrim.java b/src/com/android/launcher3/graphics/WorkspaceAndHotseatScrim.java
index 23d647b44..66f9dbfcd 100644
--- a/src/com/android/launcher3/graphics/WorkspaceAndHotseatScrim.java
+++ b/src/com/android/launcher3/graphics/WorkspaceAndHotseatScrim.java
@@ -19,6 +19,8 @@ package com.android.launcher3.graphics;
 import static android.content.Intent.ACTION_SCREEN_OFF;
 import static android.content.Intent.ACTION_USER_PRESENT;
 
+import static com.android.launcher3.icons.GraphicsUtils.setColorAlphaBound;
+
 import android.animation.ObjectAnimator;
 import android.content.BroadcastReceiver;
 import android.content.Context;
@@ -174,7 +176,7 @@ public class WorkspaceAndHotseatScrim implements
                 canvas.clipRect(mHighlightRect, Region.Op.DIFFERENCE);
             }
 
-            canvas.drawColor(ColorUtils.setAlphaComponent(mFullScrimColor, mScrimAlpha));
+            canvas.drawColor(setColorAlphaBound(mFullScrimColor, mScrimAlpha));
             canvas.restore();
         }
 
@@ -303,7 +305,7 @@ public class WorkspaceAndHotseatScrim implements
         LinearGradient lg = new LinearGradient(0, 0, 0, gradientHeight,
                 new int[]{
                         0x00FFFFFF,
-                        ColorUtils.setAlphaComponent(Color.WHITE, (int) (0xFF * 0.95)),
+                        setColorAlphaBound(Color.WHITE, (int) (0xFF * 0.95)),
                         0xFFFFFFFF},
                 new float[]{0f, 0.8f, 1f},
                 Shader.TileMode.CLAMP);
diff --git a/src/com/android/launcher3/icons/BaseIconCache.java b/src/com/android/launcher3/icons/BaseIconCache.java
index 8f3b2bb77..1f810b39f 100644
--- a/src/com/android/launcher3/icons/BaseIconCache.java
+++ b/src/com/android/launcher3/icons/BaseIconCache.java
@@ -16,6 +16,7 @@
 package com.android.launcher3.icons;
 
 import static com.android.launcher3.icons.BitmapInfo.LOW_RES_ICON;
+import static com.android.launcher3.icons.GraphicsUtils.setColorAlphaBound;
 
 import android.content.ComponentName;
 import android.content.ContentValues;
@@ -56,7 +57,6 @@ import java.util.HashMap;
 import java.util.HashSet;
 
 import androidx.annotation.NonNull;
-import androidx.core.graphics.ColorUtils;
 
 public class BaseIconCache {
 
@@ -435,7 +435,7 @@ public class BaseIconCache {
                             Long.toString(mUserManager.getSerialNumberForUser(cacheKey.user))});
             if (c.moveToNext()) {
                 // Set the alpha to be 255, so that we never have a wrong color
-                entry.color = ColorUtils.setAlphaComponent(c.getInt(0), 255);
+                entry.color = setColorAlphaBound(c.getInt(0), 255);
                 entry.title = c.getString(1);
                 if (entry.title == null) {
                     entry.title = "";
diff --git a/src/com/android/launcher3/settings/PreferenceHighlighter.java b/src/com/android/launcher3/settings/PreferenceHighlighter.java
index 4ed4cf113..8ba814686 100644
--- a/src/com/android/launcher3/settings/PreferenceHighlighter.java
+++ b/src/com/android/launcher3/settings/PreferenceHighlighter.java
@@ -15,7 +15,7 @@
  */
 package com.android.launcher3.settings;
 
-import static androidx.core.graphics.ColorUtils.setAlphaComponent;
+import static com.android.launcher3.icons.GraphicsUtils.setColorAlphaBound;
 
 import android.animation.Animator;
 import android.animation.AnimatorListenerAdapter;
@@ -57,7 +57,7 @@ public class PreferenceHighlighter extends ItemDecoration implements Runnable {
     private static final long HIGHLIGHT_DURATION = 15000L;
     private static final long HIGHLIGHT_FADE_OUT_DURATION = 500L;
     private static final long HIGHLIGHT_FADE_IN_DURATION = 200L;
-    private static final int END_COLOR = setAlphaComponent(Color.WHITE, 0);
+    private static final int END_COLOR = setColorAlphaBound(Color.WHITE, 0);
 
     private final Paint mPaint = new Paint();
     private final RecyclerView mRv;
@@ -91,7 +91,7 @@ public class PreferenceHighlighter extends ItemDecoration implements Runnable {
 
         if (!mHighLightStarted) {
             // Start highlight
-            int colorTo = setAlphaComponent(Themes.getColorAccent(mRv.getContext()), 66);
+            int colorTo = setColorAlphaBound(Themes.getColorAccent(mRv.getContext()), 66);
             ObjectAnimator anim = ObjectAnimator.ofArgb(this, HIGHLIGHT_COLOR, END_COLOR, colorTo);
             anim.setDuration(HIGHLIGHT_FADE_IN_DURATION);
             anim.setRepeatMode(ValueAnimator.REVERSE);
diff --git a/src/com/android/launcher3/views/DoubleShadowBubbleTextView.java b/src/com/android/launcher3/views/DoubleShadowBubbleTextView.java
index 64e166eeb..323eecb91 100644
--- a/src/com/android/launcher3/views/DoubleShadowBubbleTextView.java
+++ b/src/com/android/launcher3/views/DoubleShadowBubbleTextView.java
@@ -16,6 +16,8 @@
 
 package com.android.launcher3.views;
 
+import static com.android.launcher3.icons.GraphicsUtils.setColorAlphaBound;
+
 import android.content.Context;
 import android.content.res.TypedArray;
 import android.graphics.Canvas;
@@ -26,8 +28,6 @@ import android.widget.TextView;
 import com.android.launcher3.BubbleTextView;
 import com.android.launcher3.R;
 
-import androidx.core.graphics.ColorUtils;
-
 /**
  * Extension of {@link BubbleTextView} which draws two shadows on the text (ambient and key shadows}
  */
@@ -60,7 +60,7 @@ public class DoubleShadowBubbleTextView extends BubbleTextView {
 
         // We enhance the shadow by drawing the shadow twice
         getPaint().setShadowLayer(mShadowInfo.ambientShadowBlur, 0, 0,
-                ColorUtils.setAlphaComponent(mShadowInfo.ambientShadowColor, alpha));
+                setColorAlphaBound(mShadowInfo.ambientShadowColor, alpha));
 
         drawWithoutBadge(canvas);
         canvas.save();
@@ -69,7 +69,7 @@ public class DoubleShadowBubbleTextView extends BubbleTextView {
                 getScrollY() + getHeight());
 
         getPaint().setShadowLayer(mShadowInfo.keyShadowBlur, 0.0f, mShadowInfo.keyShadowOffset,
-                ColorUtils.setAlphaComponent(mShadowInfo.keyShadowColor, alpha));
+                setColorAlphaBound(mShadowInfo.keyShadowColor, alpha));
         drawWithoutBadge(canvas);
         canvas.restore();
 
@@ -107,11 +107,11 @@ public class DoubleShadowBubbleTextView extends BubbleTextView {
                 return true;
             } else if (ambientShadowAlpha > 0) {
                 textView.getPaint().setShadowLayer(ambientShadowBlur, 0, 0,
-                        ColorUtils.setAlphaComponent(ambientShadowColor, textAlpha));
+                        setColorAlphaBound(ambientShadowColor, textAlpha));
                 return true;
             } else if (keyShadowAlpha > 0) {
                 textView.getPaint().setShadowLayer(keyShadowBlur, 0.0f, keyShadowOffset,
-                        ColorUtils.setAlphaComponent(keyShadowColor, textAlpha));
+                        setColorAlphaBound(keyShadowColor, textAlpha));
                 return true;
             } else {
                 return false;
diff --git a/src/com/android/launcher3/views/ScrimView.java b/src/com/android/launcher3/views/ScrimView.java
index 6fd84db26..deb09654c 100644
--- a/src/com/android/launcher3/views/ScrimView.java
+++ b/src/com/android/launcher3/views/ScrimView.java
@@ -22,9 +22,9 @@ import static com.android.launcher3.LauncherState.ALL_APPS;
 import static com.android.launcher3.LauncherState.NORMAL;
 import static com.android.launcher3.anim.Interpolators.ACCEL;
 import static com.android.launcher3.anim.Interpolators.DEACCEL;
+import static com.android.launcher3.icons.GraphicsUtils.setColorAlphaBound;
 
 import static androidx.core.graphics.ColorUtils.compositeColors;
-import static androidx.core.graphics.ColorUtils.setAlphaComponent;
 
 import android.animation.Animator;
 import android.animation.AnimatorListenerAdapter;
@@ -182,7 +182,7 @@ public class ScrimView extends View implements Insettable, OnChangeListener,
     @Override
     public void onExtractedColorsChanged(WallpaperColorInfo wallpaperColorInfo) {
         mScrimColor = wallpaperColorInfo.getMainColor();
-        mEndFlatColor = compositeColors(mEndScrim, setAlphaComponent(
+        mEndFlatColor = compositeColors(mEndScrim, setColorAlphaBound(
                 mScrimColor, Math.round(mMaxScrimAlpha * 255)));
         mEndFlatColorAlpha = Color.alpha(mEndFlatColor);
         updateColors();
@@ -201,7 +201,7 @@ public class ScrimView extends View implements Insettable, OnChangeListener,
     public void reInitUi() { }
 
     protected void updateColors() {
-        mCurrentFlatColor = mProgress >= 1 ? 0 : setAlphaComponent(
+        mCurrentFlatColor = mProgress >= 1 ? 0 : setColorAlphaBound(
                 mEndFlatColor, Math.round((1 - mProgress) * mEndFlatColorAlpha));
     }
 
diff --git a/src/com/android/launcher3/widget/BaseWidgetSheet.java b/src/com/android/launcher3/widget/BaseWidgetSheet.java
index 48c18f853..673b3cc14 100644
--- a/src/com/android/launcher3/widget/BaseWidgetSheet.java
+++ b/src/com/android/launcher3/widget/BaseWidgetSheet.java
@@ -17,6 +17,7 @@ package com.android.launcher3.widget;
 
 import static android.view.ViewGroup.LayoutParams.MATCH_PARENT;
 
+import static com.android.launcher3.icons.GraphicsUtils.setColorAlphaBound;
 import static com.android.launcher3.logging.LoggerUtils.newContainerTarget;
 
 import android.content.Context;
@@ -42,8 +43,6 @@ import com.android.launcher3.util.Themes;
 import com.android.launcher3.views.AbstractSlideInView;
 import com.android.launcher3.views.BaseDragLayer;
 
-import androidx.core.graphics.ColorUtils;
-
 /**
  * Base class for various widgets popup
  */
@@ -162,11 +161,11 @@ abstract class BaseWidgetSheet extends AbstractSlideInView
 
     private static View createColorScrim(Context context) {
         View view = new View(context);
-        view.forceHasOverlappingRendering(false);
+        if (Utilities.ATLEAST_NOUGAT) view.forceHasOverlappingRendering(false);
 
         WallpaperColorInfo colors = WallpaperColorInfo.getInstance(context);
         int alpha = context.getResources().getInteger(R.integer.extracted_color_gradient_alpha);
-        view.setBackgroundColor(ColorUtils.setAlphaComponent(colors.getSecondaryColor(), alpha));
+        view.setBackgroundColor(setColorAlphaBound(colors.getSecondaryColor(), alpha));
 
         BaseDragLayer.LayoutParams lp = new BaseDragLayer.LayoutParams(MATCH_PARENT, MATCH_PARENT);
         lp.ignoreInsets = true;