LinesActivity.java revision 469b1dbeaf7d3267d1b43af4e7391b49eac10ee0 
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.Bitmap;
22import android.graphics.BitmapFactory;
23import android.graphics.BitmapShader;
24import android.graphics.Canvas;
25import android.graphics.Paint;
26import android.os.Bundle;
27import android.view.View;
28
29@SuppressWarnings({"UnusedDeclaration"})
30public class LinesActivity extends Activity {
31    @Override
32    protected void onCreate(Bundle savedInstanceState) {
33        super.onCreate(savedInstanceState);
34        final LinesView view = new LinesView(this);
35        setContentView(view);
36    }
37
38    static class LinesView extends View {
39        private final Bitmap mBitmap1;
40        private final Paint mSmallPaint;
41        private final Paint mMediumPaint;
42        private final Paint mLargePaint;
43        private final BitmapShader mShader;
44        private final float[] mPoints;
45        private final Paint mAlphaPaint;
46
47        LinesView(Context c) {
48            super(c);
49
50            mBitmap1 = BitmapFactory.decodeResource(c.getResources(), R.drawable.sunset1);
51
52            mSmallPaint = new Paint();
53            mSmallPaint.setAntiAlias(true);
54            mSmallPaint.setColor(0xffff0000);
55            mSmallPaint.setStrokeWidth(1.0f);
56
57            mMediumPaint = new Paint();
58            mMediumPaint.setAntiAlias(true);
59            mMediumPaint.setColor(0xff0000ff);
60            mMediumPaint.setStrokeWidth(4.0f);
61
62            mLargePaint = new Paint();
63            mLargePaint.setAntiAlias(true);
64            mLargePaint.setColor(0xff00ff00);
65            mLargePaint.setStrokeWidth(15.0f);
66
67            mAlphaPaint = new Paint();
68            mAlphaPaint.setAntiAlias(true);
69            mAlphaPaint.setColor(0x7fff0050);
70            mAlphaPaint.setStrokeWidth(10.0f);
71
72            mShader = new BitmapShader(mBitmap1, BitmapShader.TileMode.MIRROR,
73                    BitmapShader.TileMode.MIRROR);
74
75            mPoints = new float[] {
76                    62.0f, 0.0f, 302.0f, 400.0f,
77                    302.0f, 400.0f, 352.0f, 400.0f,
78                    352.0f, 400.0f, 352.0f, 500.0f
79            };
80        }
81
82        @Override
83        protected void onDraw(Canvas canvas) {
84            super.onDraw(canvas);
85
86            canvas.drawARGB(255, 255, 255, 255);
87
88            canvas.save();
89            canvas.translate(100.0f, 20.0f);
90
91            canvas.drawLine(0.0f, 0.0f, 40.0f, 400.0f, mSmallPaint);
92            canvas.drawLine(5.0f, 0.0f, 95.0f, 400.0f, mMediumPaint);
93            canvas.drawLine(22.0f, 0.0f, 162.0f, 400.0f, mLargePaint);
94
95            mLargePaint.setShader(mShader);
96            canvas.drawLine(42.0f, 0.0f, 222.0f, 400.0f, mLargePaint);
97            mLargePaint.setShader(null);
98
99            canvas.drawLines(mPoints, mAlphaPaint);
100
101            mSmallPaint.setAntiAlias(false);
102            canvas.drawLine(0.0f, 0.0f, 400.0f, 0.0f, mSmallPaint);
103            mSmallPaint.setAntiAlias(true);
104            canvas.drawLine(0.0f, 0.0f, 0.0f, 400.0f, mSmallPaint);
105            canvas.drawLine(0.0f, 400.0f, 400.0f, 400.0f, mSmallPaint);
106
107            canvas.translate(120.0f, 0.0f);
108            mAlphaPaint.setShader(mShader);
109            canvas.drawLines(mPoints, mAlphaPaint);
110            mAlphaPaint.setShader(null);
111
112            canvas.restore();
113        }
114    }
115}
116