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

2 files changed, 6 insertions, 8 deletions

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);