diff --git a/src/com/android/launcher3/AppWidgetResizeFrame.java b/src/com/android/launcher3/AppWidgetResizeFrame.java
index 5d9797f..74ac8c2 100644
--- a/src/com/android/launcher3/AppWidgetResizeFrame.java
+++ b/src/com/android/launcher3/AppWidgetResizeFrame.java
@@ -4,7 +4,6 @@
 
 import static com.android.launcher3.LauncherAnimUtils.LAYOUT_HEIGHT;
 import static com.android.launcher3.LauncherAnimUtils.LAYOUT_WIDTH;
-import static com.android.launcher3.Utilities.ATLEAST_S;
 import static com.android.launcher3.logging.StatsLogManager.LauncherEvent.LAUNCHER_WIDGET_RESIZE_COMPLETED;
 import static com.android.launcher3.logging.StatsLogManager.LauncherEvent.LAUNCHER_WIDGET_RESIZE_STARTED;
 import static com.android.launcher3.views.BaseDragLayer.LAYOUT_X;
@@ -13,18 +12,12 @@
 import android.animation.AnimatorSet;
 import android.animation.ObjectAnimator;
 import android.animation.PropertyValuesHolder;
-import android.appwidget.AppWidgetHostView;
-import android.appwidget.AppWidgetManager;
 import android.appwidget.AppWidgetProviderInfo;
-import android.content.ComponentName;
 import android.content.Context;
-import android.graphics.Point;
 import android.graphics.Rect;
 import android.graphics.drawable.Drawable;
 import android.graphics.drawable.GradientDrawable;
-import android.os.Bundle;
 import android.util.AttributeSet;
-import android.util.SizeF;
 import android.view.KeyEvent;
 import android.view.MotionEvent;
 import android.view.View;
@@ -39,10 +32,10 @@
 import com.android.launcher3.util.PendingRequestArgs;
 import com.android.launcher3.widget.LauncherAppWidgetHostView;
 import com.android.launcher3.widget.LauncherAppWidgetProviderInfo;
+import com.android.launcher3.widget.util.WidgetSizes;
 
 import java.util.ArrayList;
 import java.util.List;
-import java.util.stream.Collectors;
 
 public class AppWidgetResizeFrame extends AbstractFloatingView implements View.OnKeyListener {
     private static final int SNAP_DURATION = 150;
@@ -415,90 +408,12 @@
             mRunningHInc += hSpanDelta;
 
             if (!onDismiss) {
-                updateWidgetSizeRanges(mWidgetView, mLauncher, spanX, spanY);
+                WidgetSizes.updateWidgetSizeRanges(mWidgetView, mLauncher, spanX, spanY);
             }
         }
         mWidgetView.requestLayout();
     }
 
-    public static void updateWidgetSizeRanges(
-            AppWidgetHostView widgetView, Context context, int spanX, int spanY) {
-        List<SizeF> sizes = getWidgetSizes(context, spanX, spanY);
-        if (ATLEAST_S) {
-            widgetView.updateAppWidgetSize(new Bundle(), sizes);
-        } else {
-            Rect bounds = getMinMaxSizes(sizes);
-            widgetView.updateAppWidgetSize(new Bundle(), bounds.left, bounds.top, bounds.right,
-                    bounds.bottom);
-        }
-    }
-
-    /** Returns the list of sizes for a widget of given span, in dp. */
-    public static ArrayList<SizeF> getWidgetSizes(Context context, int spanX, int spanY) {
-        ArrayList<SizeF> sizes = new ArrayList<>(2);
-        final float density = context.getResources().getDisplayMetrics().density;
-        Point cellSize = new Point();
-
-        for (DeviceProfile profile : LauncherAppState.getIDP(context).supportedProfiles) {
-            final float hBorderSpacing = (spanX - 1) * profile.cellLayoutBorderSpacingPx;
-            final float vBorderSpacing = (spanY - 1) * profile.cellLayoutBorderSpacingPx;
-            profile.getCellSize(cellSize);
-            sizes.add(new SizeF(
-                    ((spanX * cellSize.x) + hBorderSpacing) / density,
-                    ((spanY * cellSize.y) + vBorderSpacing) / density));
-        }
-        return sizes;
-    }
-
-    /**
-     * Returns the bundle to be used as the default options for a widget with provided size
-     */
-    public static Bundle getWidgetSizeOptions(
-            Context context, ComponentName provider, int spanX, int spanY) {
-        ArrayList<SizeF> sizes = getWidgetSizes(context, spanX, spanY);
-        Rect padding = getDefaultPaddingForWidget(context, provider, null);
-        float density = context.getResources().getDisplayMetrics().density;
-        float xPaddingDips = (padding.left + padding.right) / density;
-        float yPaddingDips = (padding.top + padding.bottom) / density;
-
-        ArrayList<SizeF> paddedSizes = sizes.stream()
-                .map(size -> new SizeF(
-                        Math.max(0.f, size.getWidth() - xPaddingDips),
-                        Math.max(0.f, size.getHeight() - yPaddingDips)))
-                .collect(Collectors.toCollection(ArrayList::new));
-
-        Rect rect = AppWidgetResizeFrame.getMinMaxSizes(paddedSizes);
-        Bundle options = new Bundle();
-        options.putInt(AppWidgetManager.OPTION_APPWIDGET_MIN_WIDTH, rect.left);
-        options.putInt(AppWidgetManager.OPTION_APPWIDGET_MIN_HEIGHT, rect.top);
-        options.putInt(AppWidgetManager.OPTION_APPWIDGET_MAX_WIDTH, rect.right);
-        options.putInt(AppWidgetManager.OPTION_APPWIDGET_MAX_HEIGHT, rect.bottom);
-        options.putParcelableArrayList(AppWidgetManager.OPTION_APPWIDGET_SIZES, paddedSizes);
-        return options;
-    }
-
-    /**
-     * Returns the min and max widths and heights given a list of sizes, in dp.
-     *
-     * @param sizes List of sizes to get the min/max from.
-     * @return A rectangle with the left (resp. top) is used for the min width (resp. height) and
-     * the right (resp. bottom) for the max. The returned rectangle is set with 0s if the list is
-     * empty.
-     */
-    private static Rect getMinMaxSizes(List<SizeF> sizes) {
-        if (sizes.isEmpty()) {
-            return new Rect();
-        } else {
-            SizeF first = sizes.get(0);
-            Rect result = new Rect((int) first.getWidth(), (int) first.getHeight(),
-                    (int) first.getWidth(), (int) first.getHeight());
-            for (int i = 1; i < sizes.size(); i++) {
-                result.union((int) sizes.get(i).getWidth(), (int) sizes.get(i).getHeight());
-            }
-            return result;
-        }
-    }
-
     @Override
     protected void onDetachedFromWindow() {
         super.onDetachedFromWindow();
diff --git a/src/com/android/launcher3/Workspace.java b/src/com/android/launcher3/Workspace.java
index d136cda..17c8edc 100644
--- a/src/com/android/launcher3/Workspace.java
+++ b/src/com/android/launcher3/Workspace.java
@@ -114,6 +114,7 @@
 import com.android.launcher3.widget.PendingAppWidgetHostView;
 import com.android.launcher3.widget.WidgetManagerHelper;
 import com.android.launcher3.widget.dragndrop.AppWidgetHostViewDragListener;
+import com.android.launcher3.widget.util.WidgetSizes;
 import com.android.systemui.plugins.shared.LauncherOverlayManager.LauncherOverlay;
 
 import java.util.ArrayList;
@@ -1854,7 +1855,7 @@
                     item.spanX = resultSpan[0];
                     item.spanY = resultSpan[1];
                     AppWidgetHostView awhv = (AppWidgetHostView) cell;
-                    AppWidgetResizeFrame.updateWidgetSizeRanges(awhv, mLauncher, resultSpan[0],
+                    WidgetSizes.updateWidgetSizeRanges(awhv, mLauncher, resultSpan[0],
                             resultSpan[1]);
                 }
 
@@ -2528,8 +2529,7 @@
                     ((PendingAddWidgetInfo) pendingInfo).boundWidget : null;
 
             if (finalView != null && updateWidgetSize) {
-                AppWidgetResizeFrame.updateWidgetSizeRanges(finalView, mLauncher, item.spanX,
-                        item.spanY);
+                WidgetSizes.updateWidgetSizeRanges(finalView, mLauncher, item.spanX, item.spanY);
             }
 
             int animationStyle = ANIMATE_INTO_POSITION_AND_DISAPPEAR;
diff --git a/src/com/android/launcher3/accessibility/LauncherAccessibilityDelegate.java b/src/com/android/launcher3/accessibility/LauncherAccessibilityDelegate.java
index 2b36f19..9faac5b 100644
--- a/src/com/android/launcher3/accessibility/LauncherAccessibilityDelegate.java
+++ b/src/com/android/launcher3/accessibility/LauncherAccessibilityDelegate.java
@@ -21,7 +21,6 @@
 import android.view.accessibility.AccessibilityNodeInfo;
 import android.view.accessibility.AccessibilityNodeInfo.AccessibilityAction;
 
-import com.android.launcher3.AppWidgetResizeFrame;
 import com.android.launcher3.BubbleTextView;
 import com.android.launcher3.ButtonDropTarget;
 import com.android.launcher3.CellLayout;
@@ -51,6 +50,7 @@
 import com.android.launcher3.views.OptionsPopupView;
 import com.android.launcher3.views.OptionsPopupView.OptionItem;
 import com.android.launcher3.widget.LauncherAppWidgetHostView;
+import com.android.launcher3.widget.util.WidgetSizes;
 
 import java.util.ArrayList;
 import java.util.Collections;
@@ -367,7 +367,7 @@
         }
 
         layout.markCellsAsOccupiedForView(host);
-        AppWidgetResizeFrame.updateWidgetSizeRanges(((LauncherAppWidgetHostView) host), mLauncher,
+        WidgetSizes.updateWidgetSizeRanges(((LauncherAppWidgetHostView) host), mLauncher,
                 info.spanX, info.spanY);
         host.requestLayout();
         mLauncher.getModelWriter().updateItemInDatabase(info);
diff --git a/src/com/android/launcher3/model/data/LauncherAppWidgetInfo.java b/src/com/android/launcher3/model/data/LauncherAppWidgetInfo.java
index 003b3bd..658c6e1 100644
--- a/src/com/android/launcher3/model/data/LauncherAppWidgetInfo.java
+++ b/src/com/android/launcher3/model/data/LauncherAppWidgetInfo.java
@@ -26,13 +26,13 @@
 
 import androidx.annotation.Nullable;
 
-import com.android.launcher3.AppWidgetResizeFrame;
 import com.android.launcher3.Launcher;
 import com.android.launcher3.LauncherSettings;
 import com.android.launcher3.logger.LauncherAtom;
 import com.android.launcher3.util.ContentWriter;
 import com.android.launcher3.widget.LauncherAppWidgetHostView;
 import com.android.launcher3.widget.LauncherAppWidgetProviderInfo;
+import com.android.launcher3.widget.util.WidgetSizes;
 
 /**
  * Represents a widget (either instantiated or about to be) in the Launcher.
@@ -196,7 +196,7 @@
      */
     public void onBindAppWidget(Launcher launcher, AppWidgetHostView hostView) {
         if (!mHasNotifiedInitialWidgetSizeChanged) {
-            AppWidgetResizeFrame.updateWidgetSizeRanges(hostView, launcher, spanX, spanY);
+            WidgetSizes.updateWidgetSizeRanges(hostView, launcher, spanX, spanY);
             mHasNotifiedInitialWidgetSizeChanged = true;
         }
     }
diff --git a/src/com/android/launcher3/qsb/QsbContainerView.java b/src/com/android/launcher3/qsb/QsbContainerView.java
index 22c3f58..23ee251 100644
--- a/src/com/android/launcher3/qsb/QsbContainerView.java
+++ b/src/com/android/launcher3/qsb/QsbContainerView.java
@@ -20,8 +20,6 @@
 import static android.appwidget.AppWidgetManager.EXTRA_APPWIDGET_ID;
 import static android.appwidget.AppWidgetManager.EXTRA_APPWIDGET_PROVIDER;
 
-import static com.android.launcher3.AppWidgetResizeFrame.getWidgetSizeOptions;
-
 import android.app.Activity;
 import android.app.Fragment;
 import android.app.SearchManager;
@@ -49,6 +47,7 @@
 import com.android.launcher3.Utilities;
 import com.android.launcher3.config.FeatureFlags;
 import com.android.launcher3.graphics.FragmentWithPreview;
+import com.android.launcher3.widget.util.WidgetSizes;
 
 /**
  * A frame layout which contains a QSB. This internally uses fragment to bind the view, which
@@ -292,7 +291,8 @@
 
         protected Bundle createBindOptions() {
             InvariantDeviceProfile idp = LauncherAppState.getIDP(getContext());
-            return getWidgetSizeOptions(getContext(), mWidgetInfo.provider, idp.numColumns, 1);
+            return WidgetSizes.getWidgetSizeOptions(getContext(), mWidgetInfo.provider,
+                    idp.numColumns, 1);
         }
 
         protected View getDefaultView(ViewGroup container, boolean showSetupIcon) {
diff --git a/src/com/android/launcher3/widget/PendingAddWidgetInfo.java b/src/com/android/launcher3/widget/PendingAddWidgetInfo.java
index 3377abb..c04c8dc 100644
--- a/src/com/android/launcher3/widget/PendingAddWidgetInfo.java
+++ b/src/com/android/launcher3/widget/PendingAddWidgetInfo.java
@@ -15,7 +15,6 @@
  */
 package com.android.launcher3.widget;
 
-import static com.android.launcher3.AppWidgetResizeFrame.getWidgetSizeOptions;
 import static com.android.launcher3.LauncherSettings.Favorites.CONTAINER_WIDGETS_TRAY;
 
 import android.appwidget.AppWidgetHostView;
@@ -24,6 +23,7 @@
 
 import com.android.launcher3.LauncherSettings;
 import com.android.launcher3.PendingAddItemInfo;
+import com.android.launcher3.widget.util.WidgetSizes;
 
 /**
  * Meta data used for late binding of {@link LauncherAppWidgetProviderInfo}.
@@ -61,6 +61,6 @@
     }
 
     public Bundle getDefaultSizeOptions(Context context) {
-        return getWidgetSizeOptions(context, componentName, spanX, spanY);
+        return WidgetSizes.getWidgetSizeOptions(context, componentName, spanX, spanY);
     }
 }
diff --git a/src/com/android/launcher3/widget/util/WidgetSizes.java b/src/com/android/launcher3/widget/util/WidgetSizes.java
new file mode 100644
index 0000000..5c8ea72
--- /dev/null
+++ b/src/com/android/launcher3/widget/util/WidgetSizes.java
@@ -0,0 +1,145 @@
+/*
+ * Copyright (C) 2021 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.widget.util;
+
+import static android.appwidget.AppWidgetHostView.getDefaultPaddingForWidget;
+
+import static com.android.launcher3.Utilities.ATLEAST_S;
+
+import android.annotation.SuppressLint;
+import android.appwidget.AppWidgetHostView;
+import android.appwidget.AppWidgetManager;
+import android.content.ComponentName;
+import android.content.Context;
+import android.graphics.Point;
+import android.graphics.Rect;
+import android.os.Bundle;
+import android.util.Size;
+import android.util.SizeF;
+
+import androidx.annotation.Nullable;
+
+import com.android.launcher3.DeviceProfile;
+import com.android.launcher3.LauncherAppState;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.stream.Collectors;
+
+/** A utility class for widget sizes related calculations. */
+public final class WidgetSizes {
+
+    /**
+     * Returns the list of all possible sizes, in dp, for a widget of given spans on this device.
+     */
+    public static ArrayList<SizeF> getWidgetSizes(Context context, int spanX, int spanY) {
+        ArrayList<SizeF> sizes = new ArrayList<>(2);
+        final float density = context.getResources().getDisplayMetrics().density;
+        final Point cellSize = new Point();
+
+        for (DeviceProfile profile : LauncherAppState.getIDP(context).supportedProfiles) {
+            Size widgetSizePx = getWidgetSizePx(profile, spanX, spanY, cellSize);
+            sizes.add(new SizeF(widgetSizePx.getWidth() / density,
+                    widgetSizePx.getHeight() / density));
+        }
+        return sizes;
+    }
+
+    /** Returns the size, in pixels, a widget of given spans & {@code profile}. */
+    public static Size getWidgetSizePx(DeviceProfile profile, int spanX, int spanY) {
+        return getWidgetSizePx(profile, spanX, spanY, /* recycledCellSize= */ null);
+    }
+
+    private static Size getWidgetSizePx(DeviceProfile profile, int spanX, int spanY,
+            @Nullable Point recycledCellSize) {
+        final int hBorderSpacing = (spanX - 1) * profile.cellLayoutBorderSpacingPx;
+        final int vBorderSpacing = (spanY - 1) * profile.cellLayoutBorderSpacingPx;
+        if (recycledCellSize == null) {
+            recycledCellSize = new Point();
+        }
+        profile.getCellSize(recycledCellSize);
+        return new Size(((spanX * recycledCellSize.x) + hBorderSpacing),
+                ((spanY * recycledCellSize.y) + vBorderSpacing));
+    }
+
+    /**
+     * Updates a given {@code widgetView} with size, {@code spanX}, {@code spanY}.
+     *
+     * <p>On Android S+, it also updates the given {@code widgetView} with a list of sizes derived
+     * from {@code spanX}, {@code spanY} in all supported device profiles.
+     */
+    @SuppressLint("NewApi") // Already added API check.
+    public static void updateWidgetSizeRanges(AppWidgetHostView widgetView, Context context,
+            int spanX, int spanY) {
+        List<SizeF> sizes = getWidgetSizes(context, spanX, spanY);
+        if (ATLEAST_S) {
+            widgetView.updateAppWidgetSize(new Bundle(), sizes);
+        } else {
+            Rect bounds = getMinMaxSizes(sizes);
+            widgetView.updateAppWidgetSize(new Bundle(), bounds.left, bounds.top, bounds.right,
+                    bounds.bottom);
+        }
+    }
+
+    /**
+     * Returns the bundle to be used as the default options for a widget with provided size.
+     */
+    public static Bundle getWidgetSizeOptions(Context context, ComponentName provider, int spanX,
+            int spanY) {
+        ArrayList<SizeF> sizes = getWidgetSizes(context, spanX, spanY);
+        Rect padding = getDefaultPaddingForWidget(context, provider, null);
+        float density = context.getResources().getDisplayMetrics().density;
+        float xPaddingDips = (padding.left + padding.right) / density;
+        float yPaddingDips = (padding.top + padding.bottom) / density;
+
+        ArrayList<SizeF> paddedSizes = sizes.stream()
+                .map(size -> new SizeF(
+                        Math.max(0.f, size.getWidth() - xPaddingDips),
+                        Math.max(0.f, size.getHeight() - yPaddingDips)))
+                .collect(Collectors.toCollection(ArrayList::new));
+
+        Rect rect = getMinMaxSizes(paddedSizes);
+        Bundle options = new Bundle();
+        options.putInt(AppWidgetManager.OPTION_APPWIDGET_MIN_WIDTH, rect.left);
+        options.putInt(AppWidgetManager.OPTION_APPWIDGET_MIN_HEIGHT, rect.top);
+        options.putInt(AppWidgetManager.OPTION_APPWIDGET_MAX_WIDTH, rect.right);
+        options.putInt(AppWidgetManager.OPTION_APPWIDGET_MAX_HEIGHT, rect.bottom);
+        options.putParcelableArrayList(AppWidgetManager.OPTION_APPWIDGET_SIZES, paddedSizes);
+        return options;
+    }
+
+    /**
+     * Returns the min and max widths and heights given a list of sizes, in dp.
+     *
+     * @param sizes List of sizes to get the min/max from.
+     * @return A rectangle with the left (resp. top) is used for the min width (resp. height) and
+     * the right (resp. bottom) for the max. The returned rectangle is set with 0s if the list is
+     * empty.
+     */
+    private static Rect getMinMaxSizes(List<SizeF> sizes) {
+        if (sizes.isEmpty()) {
+            return new Rect();
+        } else {
+            SizeF first = sizes.get(0);
+            Rect result = new Rect((int) first.getWidth(), (int) first.getHeight(),
+                    (int) first.getWidth(), (int) first.getHeight());
+            for (int i = 1; i < sizes.size(); i++) {
+                result.union((int) sizes.get(i).getWidth(), (int) sizes.get(i).getHeight());
+            }
+            return result;
+        }
+    }
+}