PathOpsActivity.java revision 8018c8db8221aa604b3c083e09d173cc27e53d83 
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.Color;
23import android.graphics.Paint;
24import android.graphics.Path;
25import android.os.Bundle;
26import android.util.Log;
27import android.view.View;
28
29@SuppressWarnings({"UnusedDeclaration"})
30public class PathOpsActivity extends Activity {
31    @Override
32    protected void onCreate(Bundle savedInstanceState) {
33        super.onCreate(savedInstanceState);
34        final PathsView view = new PathsView(this);
35        setContentView(view);
36    }
37
38    public static class PathsView extends View {
39        private final Paint mPaint;
40        private Path[] mPaths;
41        private float mSize;
42
43
44        public PathsView(Context c) {
45            super(c);
46
47            mPaint = new Paint();
48            mPaint.setAntiAlias(true);
49            mPaint.setStyle(Paint.Style.FILL);
50            mPaint.setColor(Color.RED);
51        }
52
53        @Override
54        protected void onSizeChanged(int w, int h, int oldw, int oldh) {
55            super.onSizeChanged(w, h, oldw, oldh);
56
57            Path.Op[] ops = Path.Op.values();
58            mPaths = new Path[ops.length];
59
60            mSize = w / (ops.length * 2.0f);
61
62            Path p1 = new Path();
63            p1.addRect(0.0f, 0.0f, mSize, mSize, Path.Direction.CW);
64
65            Path p2 = new Path();
66            p2.addCircle(mSize, mSize, mSize / 2.0f, Path.Direction.CW);
67
68            for (int i = 0; i < ops.length; i++) {
69                mPaths[i] = new Path();
70                if (!mPaths[i].op(p1, p2, ops[i])) {
71                    Log.d("PathOps", ops[i].name() + " failed!");
72                }
73            }
74        }
75
76        @Override
77        protected void onDraw(Canvas canvas) {
78            super.onDraw(canvas);
79
80            canvas.translate(mSize * 0.2f, getHeight() / 2.0f);
81            for (Path path : mPaths) {
82                canvas.drawPath(path, mPaint);
83                canvas.translate(mSize * 1.8f, 0.0f);
84            }
85        }
86    }
87}
88