src/com/android/launcher3/widget/WidgetCell.java - platform/packages/apps/Launcher3 - Git at Google

 /*
  * Copyright (C) 2015 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 static android.view.View.MeasureSpec.makeMeasureSpec;
 import static android.view.ViewGroup.LayoutParams.MATCH_PARENT;
 import static android.view.ViewGroup.LayoutParams.WRAP_CONTENT;

 import static com.android.launcher3.LauncherSettings.Favorites.CONTAINER_WIDGETS_TRAY;
 import static com.android.launcher3.Utilities.ATLEAST_S;

 import android.content.Context;
 import android.graphics.Bitmap;
 import android.graphics.drawable.Drawable;
 import android.util.AttributeSet;
 import android.util.Log;
 import android.util.Size;
 import android.view.Gravity;
 import android.view.MotionEvent;
 import android.view.View;
 import android.view.ViewGroup;
 import android.view.ViewPropertyAnimator;
 import android.view.accessibility.AccessibilityNodeInfo;
 import android.widget.FrameLayout;
 import android.widget.ImageView;
 import android.widget.LinearLayout;
 import android.widget.RemoteViews;
 import android.widget.TextView;

 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;

 import com.android.launcher3.CheckLongPressHelper;
 import com.android.launcher3.DeviceProfile;
 import com.android.launcher3.Launcher;
 import com.android.launcher3.R;
 import com.android.launcher3.icons.BaseIconFactory;
 import com.android.launcher3.icons.FastBitmapDrawable;
 import com.android.launcher3.icons.RoundDrawableWrapper;
 import com.android.launcher3.icons.cache.HandlerRunnable;
 import com.android.launcher3.model.WidgetItem;
 import com.android.launcher3.views.ActivityContext;
 import com.android.launcher3.widget.util.WidgetSizes;

 import java.util.function.Consumer;

 /**
  * Represents the individual cell of the widget inside the widget tray. The preview is drawn
  * horizontally centered, and scaled down if needed.
  *
  * This view does not support padding. Since the image is scaled down to fit the view, padding will
  * further decrease the scaling factor. Drag-n-drop uses the view bounds for showing a smooth
  * transition from the view to drag view, so when adding padding support, DnD would need to
  * consider the appropriate scaling factor.
  */
 public class WidgetCell extends LinearLayout {

     private static final String TAG = "WidgetCell";
     private static final boolean DEBUG = false;

     private static final int FADE_IN_DURATION_MS = 90;

     /** Widget cell width is calculated by multiplying this factor to grid cell width. */
     private static final float WIDTH_SCALE = 3f;

     /** Widget preview width is calculated by multiplying this factor to the widget cell width. */
     private static final float PREVIEW_SCALE = 0.8f;

     /**
      * The maximum dimension that can be used as the size in
      * {@link android.view.View.MeasureSpec#makeMeasureSpec(int, int)}.
      *
      * <p>This is equal to (1 << MeasureSpec.MODE_SHIFT) - 1.
      */
     private static final int MAX_MEASURE_SPEC_DIMENSION = (1 << 30) - 1;

     /**
      * The target preview width, in pixels, of a widget or a shortcut.
      *
      * <p>The actual preview width may be smaller than or equal to this value subjected to scaling.
      */
     protected int mTargetPreviewWidth;

     /**
      * The target preview height, in pixels, of a widget or a shortcut.
      *
      * <p>The actual preview height may be smaller than or equal to this value subjected to scaling.
      */
     protected int mTargetPreviewHeight;

     protected int mPresetPreviewSize;

     private int mCellSize;

     /**
      * The scale of the preview container.
      */
     private float mPreviewContainerScale = 1f;

     private FrameLayout mWidgetImageContainer;
     private WidgetImageView mWidgetImage;
     private ImageView mWidgetBadge;
     private TextView mWidgetName;
     private TextView mWidgetDims;
     private TextView mWidgetDescription;

     protected WidgetItem mItem;

     private final DatabaseWidgetPreviewLoader mWidgetPreviewLoader;

     protected HandlerRunnable mActiveRequest;
     private boolean mAnimatePreview = true;

     protected final ActivityContext mActivity;
     private final CheckLongPressHelper mLongPressHelper;
     private final float mEnforcedCornerRadius;

     private RemoteViews mRemoteViewsPreview;
     private NavigableAppWidgetHostView mAppWidgetHostViewPreview;
     private float mAppWidgetHostViewScale = 1f;
     private int mSourceContainer = CONTAINER_WIDGETS_TRAY;

     public WidgetCell(Context context) {
         this(context, null);
     }

     public WidgetCell(Context context, AttributeSet attrs) {
         this(context, attrs, 0);
     }

     public WidgetCell(Context context, AttributeSet attrs, int defStyle) {
         super(context, attrs, defStyle);

         mActivity = ActivityContext.lookupContext(context);
         mWidgetPreviewLoader = new DatabaseWidgetPreviewLoader(context);
         mLongPressHelper = new CheckLongPressHelper(this);
         mLongPressHelper.setLongPressTimeoutFactor(1);

         setContainerWidth();
         setWillNotDraw(false);
         setClipToPadding(false);
         setAccessibilityDelegate(mActivity.getAccessibilityDelegate());
         mEnforcedCornerRadius = RoundedCornerEnforcement.computeEnforcedRadius(context);
     }

     private void setContainerWidth() {
         mCellSize = (int) (mActivity.getDeviceProfile().allAppsIconSizePx * WIDTH_SCALE);
         mPresetPreviewSize = (int) (mCellSize * PREVIEW_SCALE);
         mTargetPreviewWidth = mTargetPreviewHeight = mPresetPreviewSize;
     }

     @Override
     protected void onFinishInflate() {
         super.onFinishInflate();

         mWidgetImageContainer = findViewById(R.id.widget_preview_container);
         mWidgetImage = findViewById(R.id.widget_preview);
         mWidgetBadge = findViewById(R.id.widget_badge);
         mWidgetName = findViewById(R.id.widget_name);
         mWidgetDims = findViewById(R.id.widget_dims);
         mWidgetDescription = findViewById(R.id.widget_description);
     }

     public void setRemoteViewsPreview(RemoteViews view) {
         mRemoteViewsPreview = view;
     }

     @Nullable
     public RemoteViews getRemoteViewsPreview() {
         return mRemoteViewsPreview;
     }

     /** Returns the app widget host view scale, which is a value between [0f, 1f]. */
     public float getAppWidgetHostViewScale() {
         return mAppWidgetHostViewScale;
     }

     /**
      * Called to clear the view and free attached resources. (e.g., {@link Bitmap}
      */
     public void clear() {
         if (DEBUG) {
             Log.d(TAG, "reset called on:" + mWidgetName.getText());
         }
         mWidgetImage.animate().cancel();
         mWidgetImage.setDrawable(null);
         mWidgetImage.setVisibility(View.VISIBLE);
         mWidgetBadge.setImageDrawable(null);
         mWidgetBadge.setVisibility(View.GONE);
         mWidgetName.setText(null);
         mWidgetDims.setText(null);
         mWidgetDescription.setText(null);
         mWidgetDescription.setVisibility(GONE);
         mTargetPreviewWidth = mTargetPreviewHeight = mPresetPreviewSize;

         if (mActiveRequest != null) {
             mActiveRequest.cancel();
             mActiveRequest = null;
         }
         mRemoteViewsPreview = null;
         if (mAppWidgetHostViewPreview != null) {
             mWidgetImageContainer.removeView(mAppWidgetHostViewPreview);
         }
         mAppWidgetHostViewPreview = null;
         mAppWidgetHostViewScale = 1f;
         mItem = null;
     }

     public void setSourceContainer(int sourceContainer) {
         this.mSourceContainer = sourceContainer;
     }

     /**
      * Applies the item to this view
      */
     public void applyFromCellItem(WidgetItem item) {
         applyFromCellItem(item, 1f);
     }

     /**
      * Applies the item to this view
      */
     public void applyFromCellItem(WidgetItem item, float previewScale) {
         applyFromCellItem(item, previewScale, this::applyPreview, null);
     }

     /**
      * Applies the item to this view
      * @param item item to apply
      * @param previewScale factor to scale the preview
      * @param callback callback when preview is loaded in case the preview is being loaded or cached
      * @param cachedPreview previously cached preview bitmap is present
      */
     public void applyFromCellItem(WidgetItem item, float previewScale,
             @NonNull Consumer<Bitmap> callback, @Nullable Bitmap cachedPreview) {
         // setPreviewSize
         DeviceProfile deviceProfile = mActivity.getDeviceProfile();
         Size widgetSize = WidgetSizes.getWidgetItemSizePx(getContext(), deviceProfile, item);
         mTargetPreviewWidth = widgetSize.getWidth();
         mTargetPreviewHeight = widgetSize.getHeight();
         mPreviewContainerScale = previewScale;

         applyPreviewOnAppWidgetHostView(item);

         Context context = getContext();
         mItem = item;
         mWidgetName.setText(mItem.label);
         mWidgetName.setContentDescription(
                 context.getString(R.string.widget_preview_context_description, mItem.label));
         mWidgetDims.setText(context.getString(R.string.widget_dims_format,
                 mItem.spanX, mItem.spanY));
         mWidgetDims.setContentDescription(context.getString(
                 R.string.widget_accessible_dims_format, mItem.spanX, mItem.spanY));
         if (ATLEAST_S && mItem.widgetInfo != null) {
             CharSequence description = mItem.widgetInfo.loadDescription(context);
             if (description != null && description.length() > 0) {
                 mWidgetDescription.setText(description);
                 mWidgetDescription.setVisibility(VISIBLE);
             } else {
                 mWidgetDescription.setVisibility(GONE);
             }
         }

         if (item.activityInfo != null) {
             setTag(new PendingAddShortcutInfo(item.activityInfo));
         } else {
             setTag(new PendingAddWidgetInfo(item.widgetInfo, mSourceContainer));
         }

         ensurePreviewWithCallback(callback, cachedPreview);
     }

     private void applyPreviewOnAppWidgetHostView(WidgetItem item) {
         if (mRemoteViewsPreview != null) {
             mAppWidgetHostViewPreview = createAppWidgetHostView(getContext());
             setAppWidgetHostViewPreview(mAppWidgetHostViewPreview, item.widgetInfo,
                     mRemoteViewsPreview);
             return;
         }

         if (!item.hasPreviewLayout()) return;

         Context context = getContext();
         // If the context is a Launcher activity, DragView will show mAppWidgetHostViewPreview as
         // a preview during drag & drop. And thus, we should use LauncherAppWidgetHostView, which
         // supports applying local color extraction during drag & drop.
         mAppWidgetHostViewPreview = isLauncherContext(context)
                 ? new LauncherAppWidgetHostView(context)
                 : createAppWidgetHostView(context);
         LauncherAppWidgetProviderInfo launcherAppWidgetProviderInfo =
                 LauncherAppWidgetProviderInfo.fromProviderInfo(context, item.widgetInfo.clone());
         // A hack to force the initial layout to be the preview layout since there is no API for
         // rendering a preview layout for work profile apps yet. For non-work profile layout, a
         // proper solution is to use RemoteViews(PackageName, LayoutId).
         launcherAppWidgetProviderInfo.initialLayout = item.widgetInfo.previewLayout;
         setAppWidgetHostViewPreview(mAppWidgetHostViewPreview,
                 launcherAppWidgetProviderInfo, /* remoteViews= */ null);
     }

     private void setAppWidgetHostViewPreview(
             NavigableAppWidgetHostView appWidgetHostViewPreview,
             LauncherAppWidgetProviderInfo providerInfo,
             @Nullable RemoteViews remoteViews) {
         appWidgetHostViewPreview.setImportantForAccessibility(IMPORTANT_FOR_ACCESSIBILITY_NO);
         appWidgetHostViewPreview.setAppWidget(/* appWidgetId= */ -1, providerInfo);
         appWidgetHostViewPreview.updateAppWidget(remoteViews);
     }

     public WidgetImageView getWidgetView() {
         return mWidgetImage;
     }

     @Nullable
     public NavigableAppWidgetHostView getAppWidgetHostViewPreview() {
         return mAppWidgetHostViewPreview;
     }

     public void setAnimatePreview(boolean shouldAnimate) {
         mAnimatePreview = shouldAnimate;
     }

     private void applyPreview(Bitmap bitmap) {
         if (bitmap != null) {
             Drawable drawable = new RoundDrawableWrapper(
                     new FastBitmapDrawable(bitmap), mEnforcedCornerRadius);

             // Scale down the preview size if it's wider than the cell.
             float scale = 1f;
             if (mTargetPreviewWidth > 0) {
                 float maxWidth = mTargetPreviewWidth;
                 float previewWidth = drawable.getIntrinsicWidth() * mPreviewContainerScale;
                 scale = Math.min(maxWidth / previewWidth, 1);
             }
             setContainerSize(
                     Math.round(drawable.getIntrinsicWidth() * scale * mPreviewContainerScale),
                     Math.round(drawable.getIntrinsicHeight() * scale * mPreviewContainerScale));
             mWidgetImage.setDrawable(drawable);
             mWidgetImage.setVisibility(View.VISIBLE);
             if (mAppWidgetHostViewPreview != null) {
                 removeView(mAppWidgetHostViewPreview);
                 mAppWidgetHostViewPreview = null;
             }
         }

         if (mAnimatePreview) {
             mWidgetImageContainer.setAlpha(0f);
             ViewPropertyAnimator anim = mWidgetImageContainer.animate();
             anim.alpha(1.0f).setDuration(FADE_IN_DURATION_MS);
         } else {
             mWidgetImageContainer.setAlpha(1f);
         }
         if (mActiveRequest != null) {
             mActiveRequest.cancel();
             mActiveRequest = null;
         }
     }

     /** Used to show the badge when the widget is in the recommended section
      */
     public void showBadge() {
         Drawable badge = mWidgetPreviewLoader.getBadgeForUser(mItem.user,
                 BaseIconFactory.getBadgeSizeForIconSize(
                         mActivity.getDeviceProfile().allAppsIconSizePx));
         if (badge == null) {
             mWidgetBadge.setVisibility(View.GONE);
         } else {
             mWidgetBadge.setVisibility(View.VISIBLE);
             mWidgetBadge.setImageDrawable(badge);
         }
     }

     private void setContainerSize(int width, int height) {
         LayoutParams layoutParams = (LayoutParams) mWidgetImageContainer.getLayoutParams();
         layoutParams.width = width;
         layoutParams.height = height;
         mWidgetImageContainer.setLayoutParams(layoutParams);
     }

     /**
      * Ensures that the preview is already loaded or being loaded. If the preview is not loaded,
      * it applies the provided cachedPreview. If that is null, it starts a loader and notifies the
      * callback on successful load.
      */
     private void ensurePreviewWithCallback(Consumer<Bitmap> callback,
             @Nullable Bitmap cachedPreview) {
         if (mAppWidgetHostViewPreview != null) {
             int containerWidth = (int) (mTargetPreviewWidth * mPreviewContainerScale);
             int containerHeight = (int) (mTargetPreviewHeight * mPreviewContainerScale);
             setContainerSize(containerWidth, containerHeight);
             if (mAppWidgetHostViewPreview.getChildCount() == 1) {
                 View widgetContent = mAppWidgetHostViewPreview.getChildAt(0);
                 ViewGroup.LayoutParams layoutParams = widgetContent.getLayoutParams();
                 // We only scale preview if both the width & height of the outermost view group are
                 // not set to MATCH_PARENT.
                 boolean shouldScale =
                         layoutParams.width != MATCH_PARENT && layoutParams.height != MATCH_PARENT;
                 if (shouldScale) {
                     setNoClip(mWidgetImageContainer);
                     setNoClip(mAppWidgetHostViewPreview);
                     mAppWidgetHostViewScale = measureAndComputeWidgetPreviewScale();
                     mAppWidgetHostViewPreview.setScaleToFit(mAppWidgetHostViewScale);
                 }
             }
             FrameLayout.LayoutParams params = new FrameLayout.LayoutParams(
                     containerWidth, containerHeight, Gravity.FILL);
             mAppWidgetHostViewPreview.setLayoutParams(params);
             mWidgetImageContainer.addView(mAppWidgetHostViewPreview, /* index= */ 0);
             mWidgetImage.setVisibility(View.GONE);
             applyPreview(null);
             return;
         }
         if (cachedPreview != null) {
             applyPreview(cachedPreview);
             return;
         }
         if (mActiveRequest != null) {
             return;
         }
         mActiveRequest = mWidgetPreviewLoader.loadPreview(
                 mItem, new Size(mTargetPreviewWidth, mTargetPreviewHeight), callback);
     }

     @Override
     public boolean onTouchEvent(MotionEvent ev) {
         super.onTouchEvent(ev);
         mLongPressHelper.onTouchEvent(ev);
         return true;
     }

     @Override
     public void cancelLongPress() {
         super.cancelLongPress();
         mLongPressHelper.cancelLongPress();
     }

     private static NavigableAppWidgetHostView createAppWidgetHostView(Context context) {
         return new NavigableAppWidgetHostView(context) {
             @Override
             protected boolean shouldAllowDirectClick() {
                 return false;
             }
         };
     }

     private static boolean isLauncherContext(Context context) {
         return ActivityContext.lookupContext(context) instanceof Launcher;
     }

     @Override
     public CharSequence getAccessibilityClassName() {
         return WidgetCell.class.getName();
     }

     @Override
     public void onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo info) {
         super.onInitializeAccessibilityNodeInfo(info);
         info.removeAction(AccessibilityNodeInfo.AccessibilityAction.ACTION_CLICK);
     }

     private static void setNoClip(ViewGroup view) {
         view.setClipChildren(false);
         view.setClipToPadding(false);
     }

     private float measureAndComputeWidgetPreviewScale() {
         if (mAppWidgetHostViewPreview.getChildCount() != 1) {
             return 1f;
         }

         // Measure the largest possible width & height that the app widget wants to display.
         mAppWidgetHostViewPreview.measure(
                 makeMeasureSpec(MAX_MEASURE_SPEC_DIMENSION, MeasureSpec.UNSPECIFIED),
                 makeMeasureSpec(MAX_MEASURE_SPEC_DIMENSION, MeasureSpec.UNSPECIFIED));
         if (mRemoteViewsPreview != null) {
             // If RemoteViews contains multiple sizes, the best fit sized RemoteViews will be
             // selected in onLayout. To work out the right measurement, let's layout and then
             // measure again.
             mAppWidgetHostViewPreview.layout(
                     /* left= */ 0,
                     /* top= */ 0,
                     /* right= */ mTargetPreviewWidth,
                     /* bottom= */ mTargetPreviewHeight);
             mAppWidgetHostViewPreview.measure(
                     makeMeasureSpec(mTargetPreviewWidth, MeasureSpec.UNSPECIFIED),
                     makeMeasureSpec(mTargetPreviewHeight, MeasureSpec.UNSPECIFIED));

         }
         View widgetContent = mAppWidgetHostViewPreview.getChildAt(0);
         int appWidgetContentWidth = widgetContent.getMeasuredWidth();
         int appWidgetContentHeight = widgetContent.getMeasuredHeight();
         if (appWidgetContentWidth == 0 || appWidgetContentHeight == 0) {
             return 1f;
         }

         // If the width / height of the widget content is set to wrap content, overrides the width /
         // height with the measured dimension. This avoids incorrect measurement after scaling.
         FrameLayout.LayoutParams layoutParam =
                 (FrameLayout.LayoutParams) widgetContent.getLayoutParams();
         if (layoutParam.width == WRAP_CONTENT) {
             layoutParam.width = widgetContent.getMeasuredWidth();
         }
         if (layoutParam.height == WRAP_CONTENT) {
             layoutParam.height = widgetContent.getMeasuredHeight();
         }
         widgetContent.setLayoutParams(layoutParam);

         int horizontalPadding = mAppWidgetHostViewPreview.getPaddingStart()
                 + mAppWidgetHostViewPreview.getPaddingEnd();
         int verticalPadding = mAppWidgetHostViewPreview.getPaddingTop()
                 + mAppWidgetHostViewPreview.getPaddingBottom();
         return Math.min(
                 (mTargetPreviewWidth - horizontalPadding) * mPreviewContainerScale
                         / appWidgetContentWidth,
                 (mTargetPreviewHeight - verticalPadding) * mPreviewContainerScale
                         / appWidgetContentHeight);
     }
 }
	/*
	* Copyright (C) 2015 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 static android.view.View.MeasureSpec.makeMeasureSpec;
	import static android.view.ViewGroup.LayoutParams.MATCH_PARENT;
	import static android.view.ViewGroup.LayoutParams.WRAP_CONTENT;

	import static com.android.launcher3.LauncherSettings.Favorites.CONTAINER_WIDGETS_TRAY;
	import static com.android.launcher3.Utilities.ATLEAST_S;

	import android.content.Context;
	import android.graphics.Bitmap;
	import android.graphics.drawable.Drawable;
	import android.util.AttributeSet;
	import android.util.Log;
	import android.util.Size;
	import android.view.Gravity;
	import android.view.MotionEvent;
	import android.view.View;
	import android.view.ViewGroup;
	import android.view.ViewPropertyAnimator;
	import android.view.accessibility.AccessibilityNodeInfo;
	import android.widget.FrameLayout;
	import android.widget.ImageView;
	import android.widget.LinearLayout;
	import android.widget.RemoteViews;
	import android.widget.TextView;

	import androidx.annotation.NonNull;
	import androidx.annotation.Nullable;

	import com.android.launcher3.CheckLongPressHelper;
	import com.android.launcher3.DeviceProfile;
	import com.android.launcher3.Launcher;
	import com.android.launcher3.R;
	import com.android.launcher3.icons.BaseIconFactory;
	import com.android.launcher3.icons.FastBitmapDrawable;
	import com.android.launcher3.icons.RoundDrawableWrapper;
	import com.android.launcher3.icons.cache.HandlerRunnable;
	import com.android.launcher3.model.WidgetItem;
	import com.android.launcher3.views.ActivityContext;
	import com.android.launcher3.widget.util.WidgetSizes;

	import java.util.function.Consumer;

	/**
	* Represents the individual cell of the widget inside the widget tray. The preview is drawn
	* horizontally centered, and scaled down if needed.
	*
	* This view does not support padding. Since the image is scaled down to fit the view, padding will
	* further decrease the scaling factor. Drag-n-drop uses the view bounds for showing a smooth
	* transition from the view to drag view, so when adding padding support, DnD would need to
	* consider the appropriate scaling factor.
	*/
	public class WidgetCell extends LinearLayout {

	private static final String TAG = "WidgetCell";
	private static final boolean DEBUG = false;

	private static final int FADE_IN_DURATION_MS = 90;

	/** Widget cell width is calculated by multiplying this factor to grid cell width. */
	private static final float WIDTH_SCALE = 3f;

	/** Widget preview width is calculated by multiplying this factor to the widget cell width. */
	private static final float PREVIEW_SCALE = 0.8f;

	/**
	* The maximum dimension that can be used as the size in
	* {@link android.view.View.MeasureSpec#makeMeasureSpec(int, int)}.
	*
	* <p>This is equal to (1 << MeasureSpec.MODE_SHIFT) - 1.
	*/
	private static final int MAX_MEASURE_SPEC_DIMENSION = (1 << 30) - 1;

	/**
	* The target preview width, in pixels, of a widget or a shortcut.
	*
	* <p>The actual preview width may be smaller than or equal to this value subjected to scaling.
	*/
	protected int mTargetPreviewWidth;

	/**
	* The target preview height, in pixels, of a widget or a shortcut.
	*
	* <p>The actual preview height may be smaller than or equal to this value subjected to scaling.
	*/
	protected int mTargetPreviewHeight;

	protected int mPresetPreviewSize;

	private int mCellSize;

	/**
	* The scale of the preview container.
	*/
	private float mPreviewContainerScale = 1f;

	private FrameLayout mWidgetImageContainer;
	private WidgetImageView mWidgetImage;
	private ImageView mWidgetBadge;
	private TextView mWidgetName;
	private TextView mWidgetDims;
	private TextView mWidgetDescription;

	protected WidgetItem mItem;

	private final DatabaseWidgetPreviewLoader mWidgetPreviewLoader;

	protected HandlerRunnable mActiveRequest;
	private boolean mAnimatePreview = true;

	protected final ActivityContext mActivity;
	private final CheckLongPressHelper mLongPressHelper;
	private final float mEnforcedCornerRadius;

	private RemoteViews mRemoteViewsPreview;
	private NavigableAppWidgetHostView mAppWidgetHostViewPreview;
	private float mAppWidgetHostViewScale = 1f;
	private int mSourceContainer = CONTAINER_WIDGETS_TRAY;

	public WidgetCell(Context context) {
	this(context, null);
	}

	public WidgetCell(Context context, AttributeSet attrs) {
	this(context, attrs, 0);
	}

	public WidgetCell(Context context, AttributeSet attrs, int defStyle) {
	super(context, attrs, defStyle);

	mActivity = ActivityContext.lookupContext(context);
	mWidgetPreviewLoader = new DatabaseWidgetPreviewLoader(context);
	mLongPressHelper = new CheckLongPressHelper(this);
	mLongPressHelper.setLongPressTimeoutFactor(1);

	setContainerWidth();
	setWillNotDraw(false);
	setClipToPadding(false);
	setAccessibilityDelegate(mActivity.getAccessibilityDelegate());
	mEnforcedCornerRadius = RoundedCornerEnforcement.computeEnforcedRadius(context);
	}

	private void setContainerWidth() {
	mCellSize = (int) (mActivity.getDeviceProfile().allAppsIconSizePx * WIDTH_SCALE);
	mPresetPreviewSize = (int) (mCellSize * PREVIEW_SCALE);
	mTargetPreviewWidth = mTargetPreviewHeight = mPresetPreviewSize;
	}

	@Override
	protected void onFinishInflate() {
	super.onFinishInflate();

	mWidgetImageContainer = findViewById(R.id.widget_preview_container);
	mWidgetImage = findViewById(R.id.widget_preview);
	mWidgetBadge = findViewById(R.id.widget_badge);
	mWidgetName = findViewById(R.id.widget_name);
	mWidgetDims = findViewById(R.id.widget_dims);
	mWidgetDescription = findViewById(R.id.widget_description);
	}

	public void setRemoteViewsPreview(RemoteViews view) {
	mRemoteViewsPreview = view;
	}

	@Nullable
	public RemoteViews getRemoteViewsPreview() {
	return mRemoteViewsPreview;
	}

	/** Returns the app widget host view scale, which is a value between [0f, 1f]. */
	public float getAppWidgetHostViewScale() {
	return mAppWidgetHostViewScale;
	}

	/**
	* Called to clear the view and free attached resources. (e.g., {@link Bitmap}
	*/
	public void clear() {
	if (DEBUG) {
	Log.d(TAG, "reset called on:" + mWidgetName.getText());
	}
	mWidgetImage.animate().cancel();
	mWidgetImage.setDrawable(null);
	mWidgetImage.setVisibility(View.VISIBLE);
	mWidgetBadge.setImageDrawable(null);
	mWidgetBadge.setVisibility(View.GONE);
	mWidgetName.setText(null);
	mWidgetDims.setText(null);
	mWidgetDescription.setText(null);
	mWidgetDescription.setVisibility(GONE);
	mTargetPreviewWidth = mTargetPreviewHeight = mPresetPreviewSize;

	if (mActiveRequest != null) {
	mActiveRequest.cancel();
	mActiveRequest = null;
	}
	mRemoteViewsPreview = null;
	if (mAppWidgetHostViewPreview != null) {
	mWidgetImageContainer.removeView(mAppWidgetHostViewPreview);
	}
	mAppWidgetHostViewPreview = null;
	mAppWidgetHostViewScale = 1f;
	mItem = null;
	}

	public void setSourceContainer(int sourceContainer) {
	this.mSourceContainer = sourceContainer;
	}

	/**
	* Applies the item to this view
	*/
	public void applyFromCellItem(WidgetItem item) {
	applyFromCellItem(item, 1f);
	}

	/**
	* Applies the item to this view
	*/
	public void applyFromCellItem(WidgetItem item, float previewScale) {
	applyFromCellItem(item, previewScale, this::applyPreview, null);
	}

	/**
	* Applies the item to this view
	* @param item item to apply
	* @param previewScale factor to scale the preview
	* @param callback callback when preview is loaded in case the preview is being loaded or cached
	* @param cachedPreview previously cached preview bitmap is present
	*/
	public void applyFromCellItem(WidgetItem item, float previewScale,
	@NonNull Consumer<Bitmap> callback, @Nullable Bitmap cachedPreview) {
	// setPreviewSize
	DeviceProfile deviceProfile = mActivity.getDeviceProfile();
	Size widgetSize = WidgetSizes.getWidgetItemSizePx(getContext(), deviceProfile, item);
	mTargetPreviewWidth = widgetSize.getWidth();
	mTargetPreviewHeight = widgetSize.getHeight();
	mPreviewContainerScale = previewScale;

	applyPreviewOnAppWidgetHostView(item);

	Context context = getContext();
	mItem = item;
	mWidgetName.setText(mItem.label);
	mWidgetName.setContentDescription(
	context.getString(R.string.widget_preview_context_description, mItem.label));
	mWidgetDims.setText(context.getString(R.string.widget_dims_format,
	mItem.spanX, mItem.spanY));
	mWidgetDims.setContentDescription(context.getString(
	R.string.widget_accessible_dims_format, mItem.spanX, mItem.spanY));
	if (ATLEAST_S && mItem.widgetInfo != null) {
	CharSequence description = mItem.widgetInfo.loadDescription(context);
	if (description != null && description.length() > 0) {
	mWidgetDescription.setText(description);
	mWidgetDescription.setVisibility(VISIBLE);
	} else {
	mWidgetDescription.setVisibility(GONE);
	}
	}

	if (item.activityInfo != null) {
	setTag(new PendingAddShortcutInfo(item.activityInfo));
	} else {
	setTag(new PendingAddWidgetInfo(item.widgetInfo, mSourceContainer));
	}

	ensurePreviewWithCallback(callback, cachedPreview);
	}

	private void applyPreviewOnAppWidgetHostView(WidgetItem item) {
	if (mRemoteViewsPreview != null) {
	mAppWidgetHostViewPreview = createAppWidgetHostView(getContext());
	setAppWidgetHostViewPreview(mAppWidgetHostViewPreview, item.widgetInfo,
	mRemoteViewsPreview);
	return;
	}

	if (!item.hasPreviewLayout()) return;

	Context context = getContext();
	// If the context is a Launcher activity, DragView will show mAppWidgetHostViewPreview as
	// a preview during drag & drop. And thus, we should use LauncherAppWidgetHostView, which
	// supports applying local color extraction during drag & drop.
	mAppWidgetHostViewPreview = isLauncherContext(context)
	? new LauncherAppWidgetHostView(context)
	: createAppWidgetHostView(context);
	LauncherAppWidgetProviderInfo launcherAppWidgetProviderInfo =
	LauncherAppWidgetProviderInfo.fromProviderInfo(context, item.widgetInfo.clone());
	// A hack to force the initial layout to be the preview layout since there is no API for
	// rendering a preview layout for work profile apps yet. For non-work profile layout, a
	// proper solution is to use RemoteViews(PackageName, LayoutId).
	launcherAppWidgetProviderInfo.initialLayout = item.widgetInfo.previewLayout;
	setAppWidgetHostViewPreview(mAppWidgetHostViewPreview,
	launcherAppWidgetProviderInfo, /* remoteViews= */ null);
	}

	private void setAppWidgetHostViewPreview(
	NavigableAppWidgetHostView appWidgetHostViewPreview,
	LauncherAppWidgetProviderInfo providerInfo,
	@Nullable RemoteViews remoteViews) {
	appWidgetHostViewPreview.setImportantForAccessibility(IMPORTANT_FOR_ACCESSIBILITY_NO);
	appWidgetHostViewPreview.setAppWidget(/* appWidgetId= */ -1, providerInfo);
	appWidgetHostViewPreview.updateAppWidget(remoteViews);
	}

	public WidgetImageView getWidgetView() {
	return mWidgetImage;
	}

	@Nullable
	public NavigableAppWidgetHostView getAppWidgetHostViewPreview() {
	return mAppWidgetHostViewPreview;
	}

	public void setAnimatePreview(boolean shouldAnimate) {
	mAnimatePreview = shouldAnimate;
	}

	private void applyPreview(Bitmap bitmap) {
	if (bitmap != null) {
	Drawable drawable = new RoundDrawableWrapper(
	new FastBitmapDrawable(bitmap), mEnforcedCornerRadius);

	// Scale down the preview size if it's wider than the cell.
	float scale = 1f;
	if (mTargetPreviewWidth > 0) {
	float maxWidth = mTargetPreviewWidth;
	float previewWidth = drawable.getIntrinsicWidth() * mPreviewContainerScale;
	scale = Math.min(maxWidth / previewWidth, 1);
	}
	setContainerSize(
	Math.round(drawable.getIntrinsicWidth() * scale * mPreviewContainerScale),
	Math.round(drawable.getIntrinsicHeight() * scale * mPreviewContainerScale));
	mWidgetImage.setDrawable(drawable);
	mWidgetImage.setVisibility(View.VISIBLE);
	if (mAppWidgetHostViewPreview != null) {
	removeView(mAppWidgetHostViewPreview);
	mAppWidgetHostViewPreview = null;
	}
	}

	if (mAnimatePreview) {
	mWidgetImageContainer.setAlpha(0f);
	ViewPropertyAnimator anim = mWidgetImageContainer.animate();
	anim.alpha(1.0f).setDuration(FADE_IN_DURATION_MS);
	} else {
	mWidgetImageContainer.setAlpha(1f);
	}
	if (mActiveRequest != null) {
	mActiveRequest.cancel();
	mActiveRequest = null;
	}
	}

	/** Used to show the badge when the widget is in the recommended section
	*/
	public void showBadge() {
	Drawable badge = mWidgetPreviewLoader.getBadgeForUser(mItem.user,
	BaseIconFactory.getBadgeSizeForIconSize(
	mActivity.getDeviceProfile().allAppsIconSizePx));
	if (badge == null) {
	mWidgetBadge.setVisibility(View.GONE);
	} else {
	mWidgetBadge.setVisibility(View.VISIBLE);
	mWidgetBadge.setImageDrawable(badge);
	}
	}

	private void setContainerSize(int width, int height) {
	LayoutParams layoutParams = (LayoutParams) mWidgetImageContainer.getLayoutParams();
	layoutParams.width = width;
	layoutParams.height = height;
	mWidgetImageContainer.setLayoutParams(layoutParams);
	}

	/**
	* Ensures that the preview is already loaded or being loaded. If the preview is not loaded,
	* it applies the provided cachedPreview. If that is null, it starts a loader and notifies the
	* callback on successful load.
	*/
	private void ensurePreviewWithCallback(Consumer<Bitmap> callback,
	@Nullable Bitmap cachedPreview) {
	if (mAppWidgetHostViewPreview != null) {
	int containerWidth = (int) (mTargetPreviewWidth * mPreviewContainerScale);
	int containerHeight = (int) (mTargetPreviewHeight * mPreviewContainerScale);
	setContainerSize(containerWidth, containerHeight);
	if (mAppWidgetHostViewPreview.getChildCount() == 1) {
	View widgetContent = mAppWidgetHostViewPreview.getChildAt(0);
	ViewGroup.LayoutParams layoutParams = widgetContent.getLayoutParams();
	// We only scale preview if both the width & height of the outermost view group are
	// not set to MATCH_PARENT.
	boolean shouldScale =
	layoutParams.width != MATCH_PARENT && layoutParams.height != MATCH_PARENT;
	if (shouldScale) {
	setNoClip(mWidgetImageContainer);
	setNoClip(mAppWidgetHostViewPreview);
	mAppWidgetHostViewScale = measureAndComputeWidgetPreviewScale();
	mAppWidgetHostViewPreview.setScaleToFit(mAppWidgetHostViewScale);
	}
	}
	FrameLayout.LayoutParams params = new FrameLayout.LayoutParams(
	containerWidth, containerHeight, Gravity.FILL);
	mAppWidgetHostViewPreview.setLayoutParams(params);
	mWidgetImageContainer.addView(mAppWidgetHostViewPreview, /* index= */ 0);
	mWidgetImage.setVisibility(View.GONE);
	applyPreview(null);
	return;
	}
	if (cachedPreview != null) {
	applyPreview(cachedPreview);
	return;
	}
	if (mActiveRequest != null) {
	return;
	}
	mActiveRequest = mWidgetPreviewLoader.loadPreview(
	mItem, new Size(mTargetPreviewWidth, mTargetPreviewHeight), callback);
	}

	@Override
	public boolean onTouchEvent(MotionEvent ev) {
	super.onTouchEvent(ev);
	mLongPressHelper.onTouchEvent(ev);
	return true;
	}

	@Override
	public void cancelLongPress() {
	super.cancelLongPress();
	mLongPressHelper.cancelLongPress();
	}

	private static NavigableAppWidgetHostView createAppWidgetHostView(Context context) {
	return new NavigableAppWidgetHostView(context) {
	@Override
	protected boolean shouldAllowDirectClick() {
	return false;
	}
	};
	}

	private static boolean isLauncherContext(Context context) {
	return ActivityContext.lookupContext(context) instanceof Launcher;
	}

	@Override
	public CharSequence getAccessibilityClassName() {
	return WidgetCell.class.getName();
	}

	@Override
	public void onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo info) {
	super.onInitializeAccessibilityNodeInfo(info);
	info.removeAction(AccessibilityNodeInfo.AccessibilityAction.ACTION_CLICK);
	}

	private static void setNoClip(ViewGroup view) {
	view.setClipChildren(false);
	view.setClipToPadding(false);
	}

	private float measureAndComputeWidgetPreviewScale() {
	if (mAppWidgetHostViewPreview.getChildCount() != 1) {
	return 1f;
	}

	// Measure the largest possible width & height that the app widget wants to display.
	mAppWidgetHostViewPreview.measure(
	makeMeasureSpec(MAX_MEASURE_SPEC_DIMENSION, MeasureSpec.UNSPECIFIED),
	makeMeasureSpec(MAX_MEASURE_SPEC_DIMENSION, MeasureSpec.UNSPECIFIED));
	if (mRemoteViewsPreview != null) {
	// If RemoteViews contains multiple sizes, the best fit sized RemoteViews will be
	// selected in onLayout. To work out the right measurement, let's layout and then
	// measure again.
	mAppWidgetHostViewPreview.layout(
	/* left= */ 0,
	/* top= */ 0,
	/* right= */ mTargetPreviewWidth,
	/* bottom= */ mTargetPreviewHeight);
	mAppWidgetHostViewPreview.measure(
	makeMeasureSpec(mTargetPreviewWidth, MeasureSpec.UNSPECIFIED),
	makeMeasureSpec(mTargetPreviewHeight, MeasureSpec.UNSPECIFIED));

	}
	View widgetContent = mAppWidgetHostViewPreview.getChildAt(0);
	int appWidgetContentWidth = widgetContent.getMeasuredWidth();
	int appWidgetContentHeight = widgetContent.getMeasuredHeight();
	if (appWidgetContentWidth == 0 \|\| appWidgetContentHeight == 0) {
	return 1f;
	}

	// If the width / height of the widget content is set to wrap content, overrides the width /
	// height with the measured dimension. This avoids incorrect measurement after scaling.
	FrameLayout.LayoutParams layoutParam =
	(FrameLayout.LayoutParams) widgetContent.getLayoutParams();
	if (layoutParam.width == WRAP_CONTENT) {
	layoutParam.width = widgetContent.getMeasuredWidth();
	}
	if (layoutParam.height == WRAP_CONTENT) {
	layoutParam.height = widgetContent.getMeasuredHeight();
	}
	widgetContent.setLayoutParams(layoutParam);

	int horizontalPadding = mAppWidgetHostViewPreview.getPaddingStart()
	+ mAppWidgetHostViewPreview.getPaddingEnd();
	int verticalPadding = mAppWidgetHostViewPreview.getPaddingTop()
	+ mAppWidgetHostViewPreview.getPaddingBottom();
	return Math.min(
	(mTargetPreviewWidth - horizontalPadding) * mPreviewContainerScale
	/ appWidgetContentWidth,
	(mTargetPreviewHeight - verticalPadding) * mPreviewContainerScale
	/ appWidgetContentHeight);
	}
	}