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.Color;
23 import android.graphics.Paint;
24 import android.graphics.Path;
25 import android.os.Bundle;
26 import android.util.Log;
27 import android.view.View;
28 
29 @SuppressWarnings({"UnusedDeclaration"})
30 public class PathOpsActivity extends Activity {
31     @Override
onCreate(Bundle savedInstanceState)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 
PathsView(Context c)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
onSizeChanged(int w, int h, int oldw, int oldh)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
onDraw(Canvas canvas)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