content: /*
   * Copyright (C) 2008 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.internal.widget;
  
  import android.annotation.UnsupportedAppUsage;
  import android.content.Context;
  import android.graphics.Rect;
  import android.util.AttributeSet;
  import android.view.View;
  import android.view.MotionEvent;
  import android.widget.LinearLayout;
  
  
  /**
   * Like a normal linear layout, but supports dispatching all otherwise unhandled
   * touch events to a particular descendant.  This is for the unlock screen, so
   * that a wider range of touch events than just the lock pattern widget can kick
   * off a lock pattern if the finger is eventually dragged into the bounds of the
   * lock pattern view.
   */
  public class LinearLayoutWithDefaultTouchRecepient extends LinearLayout {
  
      private final Rect mTempRect = new Rect();
      private View mDefaultTouchRecepient;
  
      @UnsupportedAppUsage
      public LinearLayoutWithDefaultTouchRecepient(Context context) {
          super(context);
      }
  
      public LinearLayoutWithDefaultTouchRecepient(Context context, AttributeSet attrs) {
          super(context, attrs);
      }
  
      @UnsupportedAppUsage
      public void setDefaultTouchRecepient(View defaultTouchRecepient) {
          mDefaultTouchRecepient = defaultTouchRecepient;
      }
  
      @Override
      public boolean dispatchTouchEvent(MotionEvent ev) {
          if (mDefaultTouchRecepient == null) {
              return super.dispatchTouchEvent(ev);
          }
  
          if (super.dispatchTouchEvent(ev)) {
              return true;
          }
          mTempRect.set(0, 0, 0, 0);
          offsetRectIntoDescendantCoords(mDefaultTouchRecepient, mTempRect);
          ev.setLocation(ev.getX() + mTempRect.left, ev.getY() + mTempRect.top);
          return mDefaultTouchRecepient.dispatchTouchEvent(ev);
      }
  
  }
  