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.PorterDuff;
24import android.graphics.PorterDuffXfermode;
25import android.os.Bundle;
26import android.view.View;
27
28import static android.graphics.PorterDuff.Mode;
29
30@SuppressWarnings({"UnusedDeclaration"})
31public class XfermodeActivity extends Activity {
32    @Override
33    protected void onCreate(Bundle savedInstanceState) {
34        super.onCreate(savedInstanceState);
35
36        setContentView(new XfermodesView(this));
37    }
38
39    static class XfermodesView extends View {
40        private final Paint mBluePaint;
41        private final Paint mRedPaint;
42
43        XfermodesView(Context c) {
44            super(c);
45
46            mBluePaint = new Paint();
47            mBluePaint.setColor(0xff0000ff);
48
49            mRedPaint = new Paint();
50            mRedPaint.setColor(0x7fff0000);
51        }
52
53        @Override
54        protected void onDraw(Canvas canvas) {
55            super.onDraw(canvas);
56            //canvas.drawRGB(255, 255, 255);
57
58            canvas.translate(100.0f, 100.0f);
59
60            // SRC modes
61            canvas.save();
62
63            drawRects(canvas, Mode.SRC_OVER);
64            canvas.translate(0.0f, 100.0f);
65
66            drawRects(canvas, Mode.SRC_IN);
67            canvas.translate(0.0f, 100.0f);
68
69            drawRects(canvas, Mode.SRC_OUT);
70            canvas.translate(0.0f, 100.0f);
71
72            drawRects(canvas, Mode.SRC_ATOP);
73            canvas.translate(0.0f, 100.0f);
74
75            drawRects(canvas, Mode.SRC);
76
77            canvas.restore();
78
79            canvas.translate(100.0f, 0.0f);
80
81            // DST modes
82            canvas.save();
83
84            drawRects(canvas, Mode.DST_OVER);
85            canvas.translate(0.0f, 100.0f);
86
87            drawRects(canvas, Mode.DST_IN);
88            canvas.translate(0.0f, 100.0f);
89
90            drawRects(canvas, Mode.DST_OUT);
91            canvas.translate(0.0f, 100.0f);
92
93            drawRects(canvas, Mode.DST_ATOP);
94            canvas.translate(0.0f, 100.0f);
95
96            drawRects(canvas, Mode.DST);
97
98            canvas.restore();
99
100            canvas.translate(100.0f, 0.0f);
101
102            // Other modes
103            canvas.save();
104
105            drawRects(canvas, Mode.CLEAR);
106            canvas.translate(0.0f, 100.0f);
107
108            drawRects(canvas, Mode.XOR);
109
110            canvas.translate(0.0f, 100.0f);
111
112            mBluePaint.setAlpha(127);
113            canvas.drawRect(0.0f, 0.0f, 50.0f, 50.0f, mBluePaint);
114
115            canvas.translate(0.0f, 100.0f);
116
117            mBluePaint.setAlpha(10);
118            mBluePaint.setColor(0x7f0000ff);
119            canvas.drawRect(0.0f, 0.0f, 50.0f, 50.0f, mBluePaint);
120
121            mBluePaint.setColor(0xff0000ff);
122            mBluePaint.setAlpha(255);
123
124            canvas.restore();
125        }
126
127        private void drawRects(Canvas canvas, PorterDuff.Mode mode) {
128            canvas.drawRect(0.0f, 0.0f, 50.0f, 50.0f, mBluePaint);
129
130            canvas.save();
131            canvas.translate(25.0f, 25.0f);
132            mRedPaint.setXfermode(new PorterDuffXfermode(mode));
133            canvas.drawRect(0.0f, 0.0f, 50.0f, 50.0f, mRedPaint);
134            canvas.restore();
135        }
136    }
137}
138