1 /*
2  * Copyright (C) 2010 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 package com.example.android.apis.view;
18 
19 import com.example.android.apis.R;
20 
21 import android.content.Context;
22 import android.util.AttributeSet;
23 import android.view.View;
24 import android.view.ViewGroup;
25 
26 /**
27  * This view is part of the {@link SecureView} demonstration activity.
28  *
29  * This view is constructed in such a way as to obscure the buttons and descriptive
30  * text of the activity in a poor attempt to fool the user into clicking on the buttons
31  * despite the activity telling the user that they may be harmful.
32  */
33 public class SecureViewOverlay extends ViewGroup {
34     private SecureView mActivity;
35 
SecureViewOverlay(Context context, AttributeSet attrs)36     public SecureViewOverlay(Context context, AttributeSet attrs) {
37         super(context, attrs);
38     }
39 
setActivityToSpoof(SecureView activity)40     public void setActivityToSpoof(SecureView activity) {
41         this.mActivity = activity;
42     }
43 
44     @Override
onMeasure(int widthMeasureSpec, int heightMeasureSpec)45     protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
46         measureChildren(widthMeasureSpec, heightMeasureSpec);
47 
48         super.onMeasure(widthMeasureSpec, heightMeasureSpec);
49     }
50 
51     @Override
onLayout(boolean changed, int l, int t, int r, int b)52     protected void onLayout(boolean changed, int l, int t, int r, int b) {
53         spoofLayout(findViewById(R.id.secure_view_overlay_description),
54                 mActivity.findViewById(R.id.secure_view_description));
55         spoofLayout(findViewById(R.id.secure_view_overlay_button1),
56                 mActivity.findViewById(R.id.secure_view_unsecure_button));
57         spoofLayout(findViewById(R.id.secure_view_overlay_button2),
58                 mActivity.findViewById(R.id.secure_view_builtin_secure_button));
59         spoofLayout(findViewById(R.id.secure_view_overlay_button3),
60                 mActivity.findViewById(R.id.secure_view_custom_secure_button));
61     }
62 
spoofLayout(View spoof, View original)63     private void spoofLayout(View spoof, View original) {
64         final int[] globalPos = new int[2];
65         getLocationOnScreen(globalPos);
66         int x = globalPos[0];
67         int y = globalPos[1];
68 
69         original.getLocationOnScreen(globalPos);
70         x = globalPos[0] - x;
71         y = globalPos[1] - y;
72         spoof.layout(x, y, x + original.getWidth(), y + original.getHeight());
73     }
74 }
75