1 /*
2  * Copyright (C) 2012 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.android.test.hwui;
18 
19 
20 import android.app.Activity;
21 import android.os.Bundle;
22 import android.view.ViewGroup;
23 import android.widget.LinearLayout;
24 import android.widget.ScrollView;
25 import android.widget.TextView;
26 
27 import static android.widget.LinearLayout.LayoutParams;
28 
29 public class GlyphCacheActivity extends Activity {
30 
31     private static final String mCharacterSet = "abcdefghijklmnopqrstuvwxyz" +
32             "ABCDEFGHIJKLMNOPQRSTUVWXYZ" + "0123456789" + "~!@#$%^&*()_+-={}[]:\";'<>?,./";
33     private int mTotalChars = 0;
34 
35     @Override
onCreate(Bundle savedInstanceState)36     protected void onCreate(Bundle savedInstanceState) {
37         super.onCreate(savedInstanceState);
38 
39         ScrollView scrollView = new ScrollView(this);
40         scrollView.setLayoutParams(new LayoutParams(LayoutParams.MATCH_PARENT,
41                 ViewGroup.LayoutParams.MATCH_PARENT));
42         LinearLayout layout = new LinearLayout(this);
43         layout.setOrientation(LinearLayout.VERTICAL);
44         layout.setLayoutParams(new LayoutParams(LayoutParams.WRAP_CONTENT,
45                 ViewGroup.LayoutParams.WRAP_CONTENT));
46         scrollView.addView(layout);
47 
48         while (mTotalChars < 10000) {
49             layout.addView(createTextView());
50         }
51         setContentView(scrollView);
52     }
53 
createTextView()54     private TextView createTextView() {
55         TextView textview = new TextView(this);
56         textview.setTextSize(6 + (int) (Math.random() * 5) * 10);
57         textview.setTextColor(0xff << 24 | (int) (Math.random() * 255) << 16 |
58                 (int) (Math.random() * 255) << 8 | (int) (Math.random() * 255) << 16);
59         textview.setLayoutParams(new LayoutParams(LayoutParams.WRAP_CONTENT,
60                 ViewGroup.LayoutParams.WRAP_CONTENT));
61         int numChars = 5 + (int) (Math.random() * 10);
62         mTotalChars += numChars;
63         textview.setText(createString(numChars));
64 
65         return textview;
66     }
67 
createString(int length)68     private String createString(int length) {
69         StringBuilder sb = new StringBuilder();
70         for (int i = 0; i < length; i++) {
71             sb.append(mCharacterSet.charAt((int)(Math.random() * mCharacterSet.length())));
72         }
73         return sb.toString();
74     }
75 }
76