diff --git a/src/com/android/launcher3/widget/DatabaseWidgetPreviewLoader.java b/src/com/android/launcher3/widget/DatabaseWidgetPreviewLoader.java
index 867c770..4ec7e60 100644
--- a/src/com/android/launcher3/widget/DatabaseWidgetPreviewLoader.java
+++ b/src/com/android/launcher3/widget/DatabaseWidgetPreviewLoader.java
@@ -417,7 +417,8 @@
             previewHeight = drawable.getIntrinsicHeight();
         } else {
             DeviceProfile dp = launcher.getDeviceProfile();
-            Size widgetSize = WidgetSizes.getWidgetSizePx(dp, spanX, spanY);
+            Size widgetSize = WidgetSizes.getWidgetPaddedSizePx(mContext, info.provider, dp, spanX,
+                    spanY);
             previewWidth = widgetSize.getWidth();
             previewHeight = widgetSize.getHeight();
         }
diff --git a/src/com/android/launcher3/widget/WidgetCell.java b/src/com/android/launcher3/widget/WidgetCell.java
index 8798332..c3edcce 100644
--- a/src/com/android/launcher3/widget/WidgetCell.java
+++ b/src/com/android/launcher3/widget/WidgetCell.java
@@ -363,7 +363,9 @@
     /** Sets the widget preview image size, in number of cells, and preview scale. */
     public Size setPreviewSize(int spanX, int spanY, float previewScale) {
         DeviceProfile deviceProfile = mActivity.getDeviceProfile();
-        Size widgetSize = WidgetSizes.getWidgetSizePx(deviceProfile, spanX, spanY);
+        Size widgetSize =
+                mItem != null ? WidgetSizes.getWidgetItemSizePx(getContext(), deviceProfile, mItem)
+                : WidgetSizes.getWidgetSizePx(deviceProfile, spanX, spanY);
         mPreviewWidth = widgetSize.getWidth();
         mPreviewHeight = widgetSize.getHeight();
         mPreviewScale = previewScale;
diff --git a/src/com/android/launcher3/widget/picker/WidgetsListAdapter.java b/src/com/android/launcher3/widget/picker/WidgetsListAdapter.java
index 08a2263..1125b82 100644
--- a/src/com/android/launcher3/widget/picker/WidgetsListAdapter.java
+++ b/src/com/android/launcher3/widget/picker/WidgetsListAdapter.java
@@ -296,11 +296,8 @@
             for (int i = 0; i < entry.mWidgets.size(); i++) {
                 WidgetItem widgetItem = entry.mWidgets.get(i);
                 DeviceProfile deviceProfile = activity.getDeviceProfile();
-                Size widgetSize =
-                        WidgetSizes.getWidgetSizePx(
-                                deviceProfile,
-                                widgetItem.spanX,
-                                widgetItem.spanY);
+                Size widgetSize = WidgetSizes.getWidgetItemSizePx(mContext, deviceProfile,
+                        widgetItem);
                 if (widgetItem.isShortcut()) {
                     widgetSize =
                             new Size(
diff --git a/src/com/android/launcher3/widget/picker/WidgetsRecommendationTableLayout.java b/src/com/android/launcher3/widget/picker/WidgetsRecommendationTableLayout.java
index 6fc6848..3800ede 100644
--- a/src/com/android/launcher3/widget/picker/WidgetsRecommendationTableLayout.java
+++ b/src/com/android/launcher3/widget/picker/WidgetsRecommendationTableLayout.java
@@ -155,8 +155,8 @@
             float rowHeight = 0;
             for (int j = 0; j < widgetItems.size(); j++) {
                 WidgetItem widgetItem = widgetItems.get(j);
-                Size widgetSize = WidgetSizes.getWidgetSizePx(
-                        deviceProfile, widgetItem.spanX, widgetItem.spanY);
+                Size widgetSize = WidgetSizes.getWidgetItemSizePx(getContext(), deviceProfile,
+                        widgetItem);
                 float previewHeight = widgetSize.getHeight() * previewScale;
                 rowHeight = Math.max(rowHeight,
                         previewHeight + mWidgetCellTextViewsHeight + mWidgetCellVerticalPadding);
diff --git a/src/com/android/launcher3/widget/util/WidgetSizes.java b/src/com/android/launcher3/widget/util/WidgetSizes.java
index 5c8ea72..e2c84b5 100644
--- a/src/com/android/launcher3/widget/util/WidgetSizes.java
+++ b/src/com/android/launcher3/widget/util/WidgetSizes.java
@@ -17,9 +17,7 @@
 
 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;
@@ -34,24 +32,34 @@
 
 import com.android.launcher3.DeviceProfile;
 import com.android.launcher3.LauncherAppState;
+import com.android.launcher3.model.WidgetItem;
 
 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.
+     *
+     * <p>The returned sizes already take into account the system padding, and whether it is applied
+     * or not in that specific configuration.
      */
-    public static ArrayList<SizeF> getWidgetSizes(Context context, int spanX, int spanY) {
+    public static ArrayList<SizeF> getWidgetPaddedSizes(Context context, ComponentName provider,
+            int spanX, int spanY) {
+        Rect padding = getDefaultPaddingForWidget(context, provider, /* padding= */ null);
+
         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);
+            if (!profile.shouldInsetWidgets()) {
+                widgetSizePx = new Size(widgetSizePx.getWidth() - padding.left - padding.right,
+                        widgetSizePx.getHeight() - padding.top - padding.bottom);
+            }
             sizes.add(new SizeF(widgetSizePx.getWidth() / density,
                     widgetSizePx.getHeight() / density));
         }
@@ -63,6 +71,32 @@
         return getWidgetSizePx(profile, spanX, spanY, /* recycledCellSize= */ null);
     }
 
+    /**
+     * Returns the size, in pixels and removing padding, a widget of given spans & {@code profile}.
+     */
+    public static Size getWidgetPaddedSizePx(Context context, ComponentName component,
+            DeviceProfile profile, int spanX, int spanY) {
+        Size size = getWidgetSizePx(profile, spanX, spanY);
+        if (profile.shouldInsetWidgets()) {
+            return size;
+        }
+        Rect padding = getDefaultPaddingForWidget(context, component, /* padding= */ null);
+        return new Size(size.getWidth() - padding.left - padding.right,
+                size.getHeight() - padding.top - padding.bottom);
+    }
+
+    /**
+     * Returns the size of a WidgetItem.
+     */
+    public static Size getWidgetItemSizePx(Context context, DeviceProfile profile,
+            WidgetItem widgetItem) {
+        if (widgetItem.isShortcut()) {
+            return getWidgetSizePx(profile, widgetItem.spanX, widgetItem.spanY);
+        }
+        return getWidgetPaddedSizePx(context, widgetItem.componentName, profile, widgetItem.spanX,
+                widgetItem.spanY);
+    }
+
     private static Size getWidgetSizePx(DeviceProfile profile, int spanX, int spanY,
             @Nullable Point recycledCellSize) {
         final int hBorderSpacing = (spanX - 1) * profile.cellLayoutBorderSpacingPx;
@@ -81,17 +115,22 @@
      * <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);
+        AppWidgetManager widgetManager = AppWidgetManager.getInstance(context);
+        int widgetId = widgetView.getAppWidgetId();
+        if (widgetId <= 0) {
+            return;
         }
+        Bundle sizeOptions = getWidgetSizeOptions(context, widgetView.getAppWidgetInfo().provider,
+                spanX, spanY);
+        if (sizeOptions.<SizeF>getParcelableArrayList(
+                AppWidgetManager.OPTION_APPWIDGET_SIZES).equals(
+                widgetManager.getAppWidgetOptions(widgetId).<SizeF>getParcelableArrayList(
+                        AppWidgetManager.OPTION_APPWIDGET_SIZES))) {
+            return;
+        }
+        widgetManager.updateAppWidgetOptions(widgetId, sizeOptions);
     }
 
     /**
@@ -99,17 +138,7 @@
      */
     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));
+        ArrayList<SizeF> paddedSizes = getWidgetPaddedSizes(context, provider, spanX, spanY);
 
         Rect rect = getMinMaxSizes(paddedSizes);
         Bundle options = new Bundle();