Launcher3: Remove AOSP's headercolor protection paint on scroll offset

Ref: RisingTechOSS/android_packages_apps_Launcher@360add89

Author: minaripenguin

src/com/android/launcher3/allapps/ActivityAllAppsContainerView.java

@@ -156,7 +156,6 @@ public void onScrolled(@NonNull RecyclerView recyclerView, int dx, int dy) {
     private boolean mHasWorkApps;
     private float[] mBottomSheetCornerRadii;
     private ScrimView mScrimView;
-    private int mHeaderColor;
     private int mBottomSheetBackgroundColor;
     private int mTabsProtectionAlpha;
     @Nullable private AllAppsTransitionController mAllAppsTransitionController;
@@ -618,13 +617,11 @@ void setupHeader() {
     protected void updateHeaderScroll(int scrolledOffset) {
         getSearchView().setBackgroundResource(R.drawable.bg_all_apps_searchbox_google_themed);
         float prog1 = Utilities.boundToRange((float) scrolledOffset / mHeaderThreshold, 0f, 1f);
-        int headerColor = getHeaderColor(prog1);
         int tabsAlpha = mHeader.getPeripheralProtectionHeight() == 0 ? 0
                 : (int) (Utilities.boundToRange(
                         (scrolledOffset + mHeader.mSnappedScrolledY) / mHeaderThreshold, 0f, 1f)
                         * 255);
-        if (headerColor != mHeaderColor || mTabsProtectionAlpha != tabsAlpha) {
-            mHeaderColor = headerColor;
+        if (mTabsProtectionAlpha != tabsAlpha) {
             mTabsProtectionAlpha = tabsAlpha;
             invalidateHeader();
         }
@@ -642,12 +639,6 @@ protected void updateHeaderScroll(int scrolledOffset) {
         mSearchUiManager.setBackgroundVisibility(bgVisible, 1 - prog);
     }
 
-    protected int getHeaderColor(float blendRatio) {
-        return ColorUtils.setAlphaComponent(
-                ColorUtils.blendARGB(mScrimColor, mHeaderProtectionColor, blendRatio),
-                (int) (mSearchContainer.getAlpha() * 255));
-    }
-
     /**
      * It is up to the search container view created by {@link #inflateSearchBox()} to use the
      * floating search bar flag to move itself to the bottom of this container. This method checks
@@ -1160,69 +1151,7 @@ public void drawOnScrimWithScale(Canvas canvas, float scale) {
             canvas.drawPath(mTmpPath, mHeaderPaint);
         }
 
-        if (DEBUG_HEADER_PROTECTION) {
-            mHeaderPaint.setColor(Color.MAGENTA);
-            mHeaderPaint.setAlpha(255);
-        } else {
-            mHeaderPaint.setColor(mHeaderColor);
-            mHeaderPaint.setAlpha((int) (getAlpha() * Color.alpha(mHeaderColor)));
-        }
-        if (mHeaderPaint.getColor() == mScrimColor || mHeaderPaint.getColor() == 0) {
-            return;
-        }
-
-        // Draw header on background panel
-        final float headerBottomNoScale =
-                getHeaderBottom() + getVisibleContainerView().getPaddingTop();
-        final float headerHeightNoScale = headerBottomNoScale - topNoScale;
-        final float headerBottomWithScaleOnTablet = topWithScale + headerHeightNoScale * scale;
-        final float headerBottomOffset = (getVisibleContainerView().getHeight() * (1 - scale) / 2);
-        final float headerBottomWithScaleOnPhone = headerBottomNoScale * scale + headerBottomOffset;
-        final FloatingHeaderView headerView = getFloatingHeaderView();
-        if (isTablet) {
-            // Start adding header protection if search bar or tabs will attach to the top.
-            if (!FeatureFlags.ENABLE_FLOATING_SEARCH_BAR.get() || mUsingTabs) {
-                mTmpRectF.set(
-                        leftWithScale,
-                        topWithScale,
-                        rightWithScale,
-                        headerBottomWithScaleOnTablet);
-                mTmpPath.reset();
-                mTmpPath.addRoundRect(mTmpRectF, mBottomSheetCornerRadii, Direction.CW);
-                canvas.drawPath(mTmpPath, mHeaderPaint);
-            }
-        } else {
-            canvas.drawRect(0, 0, canvas.getWidth(), headerBottomWithScaleOnPhone, mHeaderPaint);
-        }
-
-        // If tab exist (such as work profile), extend header with tab height
-        final int tabsHeight = headerView.getPeripheralProtectionHeight();
-        if (mTabsProtectionAlpha > 0 && tabsHeight != 0) {
-            if (DEBUG_HEADER_PROTECTION) {
-                mHeaderPaint.setColor(Color.BLUE);
-                mHeaderPaint.setAlpha(255);
-            } else {
-                mHeaderPaint.setAlpha((int) (getAlpha() * mTabsProtectionAlpha));
-            }
-            float left = 0f;
-            float right = canvas.getWidth();
-            if (isTablet) {
-                left = mBottomSheetBackground.getLeft() + horizontalScaleOffset;
-                right = mBottomSheetBackground.getRight() - horizontalScaleOffset;
-            }
-
-            final float tabTopWithScale = isTablet
-                    ? headerBottomWithScaleOnTablet
-                    : headerBottomWithScaleOnPhone;
-            final float tabBottomWithScale = tabTopWithScale + tabsHeight * scale;
-
-            canvas.drawRect(
-                    left,
-                    tabTopWithScale,
-                    right,
-                    tabBottomWithScale,
-                    mHeaderPaint);
-        }
+        mHeaderPaint.setColor(mHeaderProtectionColor);
     }
 
     /**