PathsCacheActivity.java revision 5dc7fa709646799a5207a5d217f70aa02bf4a3aa 
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
17package com.android.test.hwui;
18
19import android.app.Activity;
20import android.content.Context;
21import android.graphics.Canvas;
22import android.graphics.Paint;
23import android.graphics.Path;
24import android.os.Bundle;
25import android.util.Log;
26import android.view.View;
27
28import java.util.ArrayList;
29import java.util.Random;
30
31@SuppressWarnings({"UnusedDeclaration"})
32public class PathsCacheActivity extends Activity {
33    private Path mPath;
34
35    private final Random mRandom = new Random();
36    @SuppressWarnings("MismatchedQueryAndUpdateOfCollection")
37    private final ArrayList<Path> mPathList = new ArrayList<Path>();
38
39    @Override
40    protected void onCreate(Bundle savedInstanceState) {
41        super.onCreate(savedInstanceState);
42
43        mPath = makePath();
44
45        final PathsView view = new PathsView(this);
46        setContentView(view);
47    }
48
49    private static Path makePath() {
50        Path path = new Path();
51        buildPath(path);
52        return path;
53    }
54
55    private static void buildPath(Path path) {
56        path.moveTo(0.0f, 0.0f);
57        path.cubicTo(0.0f, 0.0f, 100.0f, 150.0f, 100.0f, 200.0f);
58        path.cubicTo(100.0f, 200.0f, 50.0f, 300.0f, -80.0f, 200.0f);
59        path.cubicTo(-80.0f, 200.0f, 100.0f, 200.0f, 200.0f, 0.0f);
60    }
61
62    private static Path makeLargePath() {
63        Path path = new Path();
64        buildLargePath(path);
65        return path;
66    }
67
68    private static void buildLargePath(Path path) {
69        path.moveTo(0.0f, 0.0f);
70        path.cubicTo(0.0f, 0.0f, 10000.0f, 15000.0f, 10000.0f, 20000.0f);
71        path.cubicTo(10000.0f, 20000.0f, 5000.0f, 30000.0f, -8000.0f, 20000.0f);
72        path.cubicTo(-8000.0f, 20000.0f, 10000.0f, 20000.0f, 20000.0f, 0.0f);
73    }
74
75    public class PathsView extends View {
76        private final Paint mMediumPaint;
77
78        public PathsView(Context c) {
79            super(c);
80
81            mMediumPaint = new Paint();
82            mMediumPaint.setAntiAlias(true);
83            mMediumPaint.setColor(0xe00000ff);
84            mMediumPaint.setStrokeWidth(10.0f);
85            mMediumPaint.setStyle(Paint.Style.STROKE);
86        }
87
88        @Override
89        protected void onDraw(Canvas canvas) {
90            super.onDraw(canvas);
91
92            Log.d("OpenGLRenderer", "Start frame");
93
94            canvas.drawARGB(255, 255, 255, 255);
95
96            canvas.save();
97            canvas.translate(550.0f, 60.0f);
98            canvas.drawPath(mPath, mMediumPaint);
99
100            mPath.reset();
101            buildPath(mPath);
102
103            canvas.translate(30.0f, 30.0f);
104            canvas.drawPath(mPath, mMediumPaint);
105            canvas.drawPath(mPath, mMediumPaint);
106
107            canvas.restore();
108
109            for (int i = 0; i < mRandom.nextInt(20); i++) {
110                Path path = makePath();
111                int r = mRandom.nextInt(10);
112                if (r == 5 || r == 3) {
113                    mPathList.add(path);
114                } else if (r == 7) {
115                    path = makeLargePath();
116                    mPathList.add(path);
117                }
118
119                canvas.save();
120                canvas.translate(450.0f + mRandom.nextInt(200), mRandom.nextInt(200));
121                canvas.drawPath(path, mMediumPaint);
122                canvas.restore();
123            }
124
125            int r = mRandom.nextInt(100);
126            if (r == 50) {
127                mPathList.clear();
128            }
129
130            invalidate();
131        }
132    }
133}
134