Load widgets in wallpaper app launcher preview

Test: Widgets in wallpaper app launcher preview rendered
Bug: 185306338
Change-Id: I38569d2ff0b64ba55eb188afa42fba4100aae7ff

src/com/android/launcher3/graphics/LauncherPreviewRenderer.java

@@ -26,6 +26,7 @@ import static com.android.launcher3.model.ModelUtils.sortWorkspaceItemsSpatially
 
 import android.annotation.TargetApi;
 import android.app.Fragment;
+import android.appwidget.AppWidgetHost;
 import android.appwidget.AppWidgetHostView;
 import android.appwidget.AppWidgetProviderInfo;
 import android.content.Context;
@@ -83,6 +84,8 @@ import com.android.launcher3.util.IntSet;
 import com.android.launcher3.util.MainThreadInitializedObject;
 import com.android.launcher3.views.ActivityContext;
 import com.android.launcher3.views.BaseDragLayer;
+import com.android.launcher3.widget.BaseLauncherAppWidgetHostView;
+import com.android.launcher3.widget.LauncherAppWidgetHost;
 import com.android.launcher3.widget.LauncherAppWidgetProviderInfo;
 import com.android.launcher3.widget.NavigableAppWidgetHostView;
 import com.android.launcher3.widget.custom.CustomWidgetManager;
@@ -202,6 +205,7 @@ public class LauncherPreviewRenderer extends ContextWrapper
     private final InsettableFrameLayout mRootView;
     private final Hotseat mHotseat;
     private final CellLayout mWorkspace;
+    private final AppWidgetHost mAppWidgetHost;
 
     public LauncherPreviewRenderer(Context context, InvariantDeviceProfile idp) {
         super(context);
@@ -255,6 +259,10 @@ public class LauncherPreviewRenderer extends ContextWrapper
                 mDp.workspacePadding.top,
                 mDp.workspacePadding.right + mDp.cellLayoutPaddingLeftRightPx,
                 mDp.workspacePadding.bottom);
+
+        mAppWidgetHost = FeatureFlags.WIDGETS_IN_LAUNCHER_PREVIEW.get()
+                ? new LauncherPreviewAppWidgetHost(context)
+                : null;
     }
 
     /** Populate preview and render it. */
@@ -354,14 +362,20 @@ public class LauncherPreviewRenderer extends ContextWrapper
 
     private void inflateAndAddWidgets(
             LauncherAppWidgetInfo info, LauncherAppWidgetProviderInfo providerInfo) {
-        AppWidgetHostView view = new NavigableAppWidgetHostView(this) {
-            @Override
-            protected boolean shouldAllowDirectClick() {
-                return false;
-            }
-        };
-        view.setAppWidget(-1, providerInfo);
-        view.updateAppWidget(null);
+        AppWidgetHostView view;
+        if (FeatureFlags.WIDGETS_IN_LAUNCHER_PREVIEW.get()) {
+            view = mAppWidgetHost.createView(mContext, info.appWidgetId, providerInfo);
+        } else {
+            view = new NavigableAppWidgetHostView(this) {
+                @Override
+                protected boolean shouldAllowDirectClick() {
+                    return false;
+                }
+            };
+            view.setAppWidget(-1, providerInfo);
+            view.updateAppWidget(null);
+        }
+
         view.setTag(info);
         addInScreenFromBind(view, info);
     }
@@ -477,4 +491,31 @@ public class LauncherPreviewRenderer extends ContextWrapper
         view.measure(makeMeasureSpec(width, EXACTLY), makeMeasureSpec(height, EXACTLY));
         view.layout(0, 0, width, height);
     }
+
+    private class LauncherPreviewAppWidgetHost extends AppWidgetHost {
+
+        private LauncherPreviewAppWidgetHost(Context context) {
+            super(context, LauncherAppWidgetHost.APPWIDGET_HOST_ID);
+        }
+
+        @Override
+        protected AppWidgetHostView onCreateView(
+                Context context,
+                int appWidgetId,
+                AppWidgetProviderInfo appWidget) {
+            return new LauncherPreviewAppWidgetHostView(LauncherPreviewRenderer.this);
+        }
+    }
+
+    private static class LauncherPreviewAppWidgetHostView extends BaseLauncherAppWidgetHostView {
+
+        private LauncherPreviewAppWidgetHostView(Context context) {
+            super(context);
+        }
+
+        @Override
+        protected boolean shouldAllowDirectClick() {
+            return false;
+        }
+    }
 }

src/com/android/launcher3/widget/BaseLauncherAppWidgetHostView.java

@@ -0,0 +1,119 @@
+/*
+ * 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;
+
+import android.content.Context;
+import android.graphics.Outline;
+import android.graphics.Rect;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewOutlineProvider;
+import android.widget.RemoteViews;
+
+import androidx.annotation.UiThread;
+
+import com.android.launcher3.R;
+import com.android.launcher3.util.Executors;
+
+/**
+ * Launcher AppWidgetHostView with support for rounded corners and a fallback View.
+ */
+public abstract class BaseLauncherAppWidgetHostView extends NavigableAppWidgetHostView {
+
+    protected final LayoutInflater mInflater;
+
+    private final Rect mEnforcedRectangle = new Rect();
+    private final float mEnforcedCornerRadius;
+    private final ViewOutlineProvider mCornerRadiusEnforcementOutline = new ViewOutlineProvider() {
+        @Override
+        public void getOutline(View view, Outline outline) {
+            if (mEnforcedRectangle.isEmpty() || mEnforcedCornerRadius <= 0) {
+                outline.setEmpty();
+            } else {
+                outline.setRoundRect(mEnforcedRectangle, mEnforcedCornerRadius);
+            }
+        }
+    };
+
+    public BaseLauncherAppWidgetHostView(Context context) {
+        super(context);
+
+        setExecutor(Executors.THREAD_POOL_EXECUTOR);
+
+        mInflater = LayoutInflater.from(context);
+        mEnforcedCornerRadius = RoundedCornerEnforcement.computeEnforcedRadius(getContext());
+    }
+
+    @Override
+    protected View getErrorView() {
+        return mInflater.inflate(R.layout.appwidget_error, this, false);
+    }
+
+    /**
+     * Fall back to error layout instead of showing widget.
+     */
+    public void switchToErrorView() {
+        // Update the widget with 0 Layout id, to reset the view to error view.
+        updateAppWidget(new RemoteViews(getAppWidgetInfo().provider.getPackageName(), 0));
+    }
+
+    @Override
+    protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
+        try {
+            super.onLayout(changed, left, top, right, bottom);
+        } catch (final RuntimeException e) {
+            post(this::switchToErrorView);
+        }
+
+        enforceRoundedCorners();
+    }
+
+    @UiThread
+    private void resetRoundedCorners() {
+        setOutlineProvider(ViewOutlineProvider.BACKGROUND);
+        setClipToOutline(false);
+    }
+
+    @UiThread
+    private void enforceRoundedCorners() {
+        if (mEnforcedCornerRadius <= 0 || !RoundedCornerEnforcement.isRoundedCornerEnabled()) {
+            resetRoundedCorners();
+            return;
+        }
+        View background = RoundedCornerEnforcement.findBackground(this);
+        if (background == null
+                || RoundedCornerEnforcement.hasAppWidgetOptedOut(this, background)) {
+            resetRoundedCorners();
+            return;
+        }
+        RoundedCornerEnforcement.computeRoundedRectangle(this,
+                background,
+                mEnforcedRectangle);
+        setOutlineProvider(mCornerRadiusEnforcementOutline);
+        setClipToOutline(true);
+    }
+
+    /** Returns the corner radius currently enforced, in pixels. */
+    public float getEnforcedCornerRadius() {
+        return mEnforcedCornerRadius;
+    }
+
+    /** Returns true if the corner radius are enforced for this App Widget. */
+    public boolean hasEnforcedCornerRadius() {
+        return getClipToOutline();
+    }
+}

src/com/android/launcher3/widget/LauncherAppWidgetHostView.java

@@ -20,19 +20,16 @@ import android.appwidget.AppWidgetProviderInfo;
 import android.content.Context;
 import android.content.res.Configuration;
 import android.graphics.Canvas;
-import android.graphics.Outline;
 import android.graphics.Rect;
 import android.graphics.RectF;
 import android.os.Handler;
 import android.os.SystemClock;
 import android.util.SparseBooleanArray;
 import android.util.SparseIntArray;
-import android.view.LayoutInflater;
 import android.view.MotionEvent;
 import android.view.View;
 import android.view.ViewDebug;
 import android.view.ViewGroup;
-import android.view.ViewOutlineProvider;
 import android.view.accessibility.AccessibilityNodeInfo;
 import android.widget.AdapterView;
 import android.widget.Advanceable;
@@ -40,7 +37,6 @@ import android.widget.RemoteViews;
 
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
-import androidx.annotation.UiThread;
 
 import com.android.launcher3.CheckLongPressHelper;
 import com.android.launcher3.Launcher;
@@ -51,7 +47,6 @@ import com.android.launcher3.dragndrop.DragLayer;
 import com.android.launcher3.keyboard.ViewGroupFocusHelper;
 import com.android.launcher3.model.data.ItemInfo;
 import com.android.launcher3.model.data.LauncherAppWidgetInfo;
-import com.android.launcher3.util.Executors;
 import com.android.launcher3.util.Themes;
 import com.android.launcher3.views.BaseDragLayer.TouchCompleteListener;
 import com.android.launcher3.widget.dragndrop.AppWidgetHostViewDragListener;
@@ -61,7 +56,7 @@ import java.util.List;
 /**
  * {@inheritDoc}
  */
-public class LauncherAppWidgetHostView extends NavigableAppWidgetHostView
+public class LauncherAppWidgetHostView extends BaseLauncherAppWidgetHostView
         implements TouchCompleteListener, View.OnLongClickListener,
         LocalColorExtractor.Listener {
 
@@ -76,8 +71,6 @@ public class LauncherAppWidgetHostView extends NavigableAppWidgetHostView
     // Maximum duration for which updates can be deferred.
     private static final long UPDATE_LOCK_TIMEOUT_MILLIS = 1000;
 
-    protected final LayoutInflater mInflater;
-
     private final CheckLongPressHelper mLongPressHelper;
     protected final Launcher mLauncher;
     private final Workspace mWorkspace;
@@ -101,18 +94,6 @@ public class LauncherAppWidgetHostView extends NavigableAppWidgetHostView
     private final Rect mWidgetSizeAtDrag = new Rect();
 
     private final RectF mTempRectF = new RectF();
-    private final Rect mEnforcedRectangle = new Rect();
-    private final float mEnforcedCornerRadius;
-    private final ViewOutlineProvider mCornerRadiusEnforcementOutline = new ViewOutlineProvider() {
-        @Override
-        public void getOutline(View view, Outline outline) {
-            if (mEnforcedRectangle.isEmpty() || mEnforcedCornerRadius <= 0) {
-                outline.setEmpty();
-            } else {
-                outline.setRoundRect(mEnforcedRectangle, mEnforcedCornerRadius);
-            }
-        }
-    };
     private final Object mUpdateLock = new Object();
     private final ViewGroupFocusHelper mDragLayerRelativeCoordinateHelper;
     private long mDeferUpdatesUntilMillis = 0;
@@ -123,18 +104,15 @@ public class LauncherAppWidgetHostView extends NavigableAppWidgetHostView
         mLauncher = Launcher.getLauncher(context);
         mWorkspace = mLauncher.getWorkspace();
         mLongPressHelper = new CheckLongPressHelper(this, this);
-        mInflater = LayoutInflater.from(context);
         setAccessibilityDelegate(mLauncher.getAccessibilityDelegate());
         setBackgroundResource(R.drawable.widget_internal_focus_bg);
 
-        setExecutor(Executors.THREAD_POOL_EXECUTOR);
         if (Utilities.ATLEAST_Q && Themes.getAttrBoolean(mLauncher, R.attr.isWorkspaceDarkText)) {
             setOnLightBackground(true);
         }
         mColorExtractor = LocalColorExtractor.newInstance(getContext());
         mColorExtractor.setListener(this);
 
-        mEnforcedCornerRadius = RoundedCornerEnforcement.computeEnforcedRadius(getContext());
         mDragLayerRelativeCoordinateHelper = new ViewGroupFocusHelper(mLauncher.getDragLayer());
     }
 
@@ -165,11 +143,6 @@ public class LauncherAppWidgetHostView extends NavigableAppWidgetHostView
         return true;
     }
 
-    @Override
-    protected View getErrorView() {
-        return mInflater.inflate(R.layout.appwidget_error, this, false);
-    }
-
     @Override
     public void updateAppWidget(RemoteViews remoteViews) {
         synchronized (mUpdateLock) {
@@ -304,34 +277,17 @@ public class LauncherAppWidgetHostView extends NavigableAppWidgetHostView
         }
     }
 
-    public void switchToErrorView() {
-        // Update the widget with 0 Layout id, to reset the view to error view.
-        updateAppWidget(new RemoteViews(getAppWidgetInfo().provider.getPackageName(), 0));
-    }
-
     @Override
     protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
-        try {
-            super.onLayout(changed, left, top, right, bottom);
-        } catch (final RuntimeException e) {
-            post(new Runnable() {
-                @Override
-                public void run() {
-                    switchToErrorView();
-                }
-            });
-        }
+        super.onLayout(changed, left, top, right, bottom);
 
         mIsScrollable = checkScrollableRecursively(this);
         if (!mIsInDragMode && getTag() instanceof LauncherAppWidgetInfo) {
-
             LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) getTag();
             mDragLayerRelativeCoordinateHelper.viewToRect(this, mCurrentWidgetSize);
             updateColorExtraction(mCurrentWidgetSize,
                     mWorkspace.getPageIndexForScreenId(info.screenId));
         }
-
-        enforceRoundedCorners();
     }
 
     /** Starts the drag mode. */
@@ -502,40 +458,4 @@ public class LauncherAppWidgetHostView extends NavigableAppWidgetHostView
         }
         return false;
     }
-
-    @UiThread
-    private void resetRoundedCorners() {
-        setOutlineProvider(ViewOutlineProvider.BACKGROUND);
-        setClipToOutline(false);
-    }
-
-    @UiThread
-    private void enforceRoundedCorners() {
-        if (mEnforcedCornerRadius <= 0 || !RoundedCornerEnforcement.isRoundedCornerEnabled()) {
-            resetRoundedCorners();
-            return;
-        }
-        View background = RoundedCornerEnforcement.findBackground(this);
-        if (background == null
-                || RoundedCornerEnforcement.hasAppWidgetOptedOut(this, background)) {
-            resetRoundedCorners();
-            return;
-        }
-        RoundedCornerEnforcement.computeRoundedRectangle(this,
-                background,
-                mEnforcedRectangle);
-        setOutlineProvider(mCornerRadiusEnforcementOutline);
-        setClipToOutline(true);
-    }
-
-    /** Returns the corner radius currently enforced, in pixels. */
-    public float getEnforcedCornerRadius() {
-        return mEnforcedCornerRadius;
-    }
-
-    /** Returns true if the corner radius are enforced for this App Widget. */
-    public boolean hasEnforcedCornerRadius() {
-        return getClipToOutline();
-    }
-
 }