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.android.test.hwui;
18 
19 import android.app.Activity;
20 import android.content.Context;
21 import android.graphics.Canvas;
22 import android.graphics.Paint;
23 import android.os.Bundle;
24 import android.util.Log;
25 import android.view.View;
26 
27 @SuppressWarnings({"UnusedDeclaration"})
28 public class MatrixActivity extends Activity {
29     @Override
onCreate(Bundle savedInstanceState)30     protected void onCreate(Bundle savedInstanceState) {
31         super.onCreate(savedInstanceState);
32 
33         setContentView(new MatrixView(this));
34     }
35 
36     static class MatrixView extends View {
MatrixView(Context c)37         MatrixView(Context c) {
38             super(c);
39         }
40 
41         @Override
onDraw(Canvas canvas)42         protected void onDraw(Canvas canvas) {
43             super.onDraw(canvas);
44             canvas.drawRGB(255, 255, 255);
45 
46             Log.d("Matrix", "m1=" + canvas.getMatrix());
47 
48             canvas.save();
49             canvas.translate(10.0f, 10.0f);
50             Log.d("Matrix", "m2=" + canvas.getMatrix());
51             canvas.translate(20.0f, 20.0f);
52             Log.d("Matrix", "m3=" + canvas.getMatrix());
53             canvas.restore();
54         }
55     }
56 }
57