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.Bitmap;
22 import android.graphics.BitmapFactory;
23 import android.graphics.Canvas;
24 import android.graphics.Paint;
25 import android.graphics.Path;
26 import android.graphics.PorterDuff;
27 import android.graphics.PorterDuffXfermode;
28 import android.os.Bundle;
29 import android.view.View;
30 
31 @SuppressWarnings({"UnusedDeclaration"})
32 public class ClearActivity extends Activity {
33     @Override
onCreate(Bundle savedInstanceState)34     protected void onCreate(Bundle savedInstanceState) {
35         super.onCreate(savedInstanceState);
36         final PathsView view = new PathsView(this);
37         setContentView(view);
38     }
39 
40     public static class PathsView extends View {
41         private final Bitmap mBitmap1;
42         private final Paint mClearPaint;
43         private final Path mPath;
44 
PathsView(Context c)45         public PathsView(Context c) {
46             super(c);
47 
48             mBitmap1 = BitmapFactory.decodeResource(c.getResources(), R.drawable.sunset2);
49 
50             mClearPaint = new Paint();
51             mClearPaint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.CLEAR));
52             mClearPaint.setAntiAlias(true);
53             mClearPaint.setColor(0x0000ff00);
54             mClearPaint.setStrokeWidth(15.0f);
55             mClearPaint.setStyle(Paint.Style.FILL);
56             mClearPaint.setTextSize(32.0f);
57 
58             mPath = new Path();
59             mPath.moveTo(0.0f, 0.0f);
60             mPath.cubicTo(0.0f, 0.0f, 100.0f, 150.0f, 100.0f, 200.0f);
61             mPath.cubicTo(100.0f, 200.0f, 50.0f, 300.0f, -80.0f, 200.0f);
62             mPath.cubicTo(-80.0f, 200.0f, 100.0f, 200.0f, 200.0f, 0.0f);
63 
64         }
65 
66         @Override
onDraw(Canvas canvas)67         protected void onDraw(Canvas canvas) {
68             super.onDraw(canvas);
69 
70             canvas.save(); {
71                 canvas.drawARGB(255, 255, 255, 255);
72                 canvas.drawRect(100.0f, 100.0f, 200.0f, 200.0f, mClearPaint);
73                 canvas.drawCircle(150.0f, 400.0f, 100.0f, mClearPaint);
74                 canvas.drawBitmap(mBitmap1, 400.0f, 100.0f, mClearPaint);
75                 canvas.save(); {
76                     canvas.translate(400.0f, 400.0f);
77                     canvas.drawPath(mPath, mClearPaint);
78                 }
79                 canvas.restore();
80                 canvas.drawText("OpenGLRenderer", 50.0f, 50.0f, mClearPaint);
81                 mClearPaint.setColor(0xff000000);
82                 canvas.drawRect(800.0f, 100.0f, 900.0f, 200.0f, mClearPaint);
83                 mClearPaint.setColor(0x0000ff00);
84             }
85             canvas.restore();
86         }
87     }
88 }
89