LinesActivity.java revision 63fd87113cea6abec97a6cd966e090e9b590fc3b 
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    public static class LinesView extends View {
39        private static final boolean LINE_AA = false;
40
41        private final Bitmap mBitmap1;
42        private final Paint mSmallPaint;
43        private final Paint mMediumPaint;
44        private final Paint mLargePaint;
45        private final BitmapShader mShader;
46        private final float[] mPoints;
47        private final Paint mAlphaPaint;
48        private final Paint mHairLinePaint;
49
50        public LinesView(Context c) {
51            super(c);
52
53            mBitmap1 = BitmapFactory.decodeResource(c.getResources(), R.drawable.sunset1);
54
55            mSmallPaint = new Paint();
56            mSmallPaint.setAntiAlias(LINE_AA);
57            mSmallPaint.setColor(0xffff0000);
58            mSmallPaint.setStrokeWidth(1.0f);
59
60            mMediumPaint = new Paint();
61            mMediumPaint.setAntiAlias(LINE_AA);
62            mMediumPaint.setColor(0xff0000ff);
63            mMediumPaint.setStrokeWidth(4.0f);
64
65            mLargePaint = new Paint();
66            mLargePaint.setAntiAlias(LINE_AA);
67            mLargePaint.setColor(0xff00ff00);
68            mLargePaint.setStrokeWidth(15.0f);
69
70            mAlphaPaint = new Paint();
71            mAlphaPaint.setAntiAlias(LINE_AA);
72            mAlphaPaint.setColor(0x7fff0050);
73            mAlphaPaint.setStrokeWidth(10.0f);
74
75            mHairLinePaint = new Paint();
76            mHairLinePaint.setAntiAlias(LINE_AA);
77            mHairLinePaint.setColor(0xff0000ff);
78            mHairLinePaint.setStrokeWidth(0.0f);
79
80            mShader = new BitmapShader(mBitmap1, BitmapShader.TileMode.MIRROR,
81                    BitmapShader.TileMode.MIRROR);
82
83            mPoints = new float[] {
84                    62.0f, 0.0f, 302.0f, 400.0f,
85                    302.0f, 400.0f, 352.0f, 400.0f,
86                    352.0f, 400.0f, 352.0f, 500.0f
87            };
88        }
89
90        @Override
91        protected void onDraw(Canvas canvas) {
92            super.onDraw(canvas);
93
94            canvas.drawARGB(255, 255, 255, 255);
95
96            canvas.save();
97            canvas.translate(100.0f, 20.0f);
98
99            canvas.drawLine(0.0f, 0.0f, 40.0f, 400.0f, mSmallPaint);
100            canvas.drawLine(5.0f, 0.0f, 95.0f, 400.0f, mMediumPaint);
101            canvas.drawLine(22.0f, 0.0f, 162.0f, 400.0f, mLargePaint);
102
103            mLargePaint.setShader(mShader);
104            canvas.drawLine(42.0f, 0.0f, 222.0f, 400.0f, mLargePaint);
105            mLargePaint.setShader(null);
106
107            canvas.drawLines(mPoints, mAlphaPaint);
108
109            mSmallPaint.setAntiAlias(false);
110            canvas.drawLine(0.0f, 0.0f, 400.0f, 0.0f, mSmallPaint);
111            mSmallPaint.setAntiAlias(LINE_AA);
112            canvas.drawLine(0.0f, 0.0f, 0.0f, 400.0f, mSmallPaint);
113            canvas.drawLine(0.0f, 400.0f, 400.0f, 400.0f, mSmallPaint);
114
115            canvas.translate(120.0f, 0.0f);
116            mAlphaPaint.setShader(mShader);
117            canvas.drawLines(mPoints, mAlphaPaint);
118            mAlphaPaint.setShader(null);
119
120            canvas.restore();
121
122            canvas.scale(10.0f, 10.0f);
123            canvas.drawLine(50.0f, 40.0f, 10.0f, 40.0f, mSmallPaint);
124            canvas.drawLine(10.0f, 50.0f, 50.0f, 50.0f, mSmallPaint);
125            canvas.drawLine(10.0f, 60.0f, 50.0f, 60.0f, mHairLinePaint);
126            canvas.restore();
127        }
128    }
129}
130