content: /*
   * Copyright (C) 2018 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.quickstep.fallback;
  
  import android.annotation.TargetApi;
  import android.content.Context;
  import android.graphics.Point;
  import android.graphics.Rect;
  import android.util.AttributeSet;
  
  import com.android.launcher3.BaseActivity;
  import com.android.launcher3.R;
  import com.android.launcher3.util.Themes;
  import com.android.launcher3.util.TouchController;
  import com.android.launcher3.views.BaseDragLayer;
  import com.android.quickstep.RecentsActivity;
  
  public class RecentsRootView extends BaseDragLayer<RecentsActivity> {
  
      private static final int MIN_SIZE = 10;
      private final RecentsActivity mActivity;
  
      private final Point mLastKnownSize = new Point(MIN_SIZE, MIN_SIZE);
  
      public RecentsRootView(Context context, AttributeSet attrs) {
          super(context, attrs, 1 /* alphaChannelCount */);
          mActivity = BaseActivity.fromContext(context);
          setSystemUiVisibility(SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN
                  | SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION
                  | SYSTEM_UI_FLAG_LAYOUT_STABLE);
      }
  
      public Point getLastKnownSize() {
          return mLastKnownSize;
      }
  
      public void setup() {
          mControllers = new TouchController[] { new RecentsTaskController(mActivity) };
      }
  
      @Override
      protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
          // Check size changes before the actual measure, to avoid multiple measure calls.
          int width = Math.max(MIN_SIZE, MeasureSpec.getSize(widthMeasureSpec));
          int height = Math.max(MIN_SIZE, MeasureSpec.getSize(heightMeasureSpec));
          if (mLastKnownSize.x != width || mLastKnownSize.y != height) {
              mLastKnownSize.set(width, height);
              mActivity.onRootViewSizeChanged();
          }
  
          super.onMeasure(widthMeasureSpec, heightMeasureSpec);
      }
  
      @TargetApi(23)
      @Override
      protected boolean fitSystemWindows(Rect insets) {
          // Update device profile before notifying the children.
          mActivity.getDeviceProfile().updateInsets(insets);
          setInsets(insets);
          return false; // Let children get the full insets
      }
  
      @Override
      public void setInsets(Rect insets) {
          // If the insets haven't changed, this is a no-op. Avoid unnecessary layout caused by
          // modifying child layout params.
          if (!insets.equals(mInsets)) {
              super.setInsets(insets);
          }
          setBackground(insets.top == 0 ? null
                  : Themes.getAttrDrawable(getContext(), R.attr.workspaceStatusBarScrim));
      }
  
      public void dispatchInsets() {
          mActivity.getDeviceProfile().updateInsets(mInsets);
          super.setInsets(mInsets);
      }
  }