ScaledTextActivity.java revision 5b4628aeeaa0462cd99256d28b636c06b1845930 
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.animation.ObjectAnimator;
20import android.app.Activity;
21import android.content.Context;
22import android.graphics.Canvas;
23import android.graphics.Paint;
24import android.os.Bundle;
25import android.view.View;
26
27@SuppressWarnings({"UnusedDeclaration"})
28public class ScaledTextActivity extends Activity {
29
30    @Override
31    protected void onCreate(Bundle savedInstanceState) {
32        super.onCreate(savedInstanceState);
33
34        final ScaledTextView view = new ScaledTextView(this);
35        setContentView(view);
36
37        ObjectAnimator animation = ObjectAnimator.ofFloat(view, "textScale", 1.0f, 10.0f);
38        animation.setDuration(3000);
39        animation.setRepeatCount(ObjectAnimator.INFINITE);
40        animation.setRepeatMode(ObjectAnimator.REVERSE);
41        animation.start();
42
43    }
44
45    public static class ScaledTextView extends View {
46        private final Paint mPaint;
47        private float mScale = 1.0f;
48
49        public ScaledTextView(Context c) {
50            super(c);
51
52            mPaint = new Paint();
53            mPaint.setAntiAlias(true);
54            mPaint.setTextSize(20.0f);
55        }
56
57        public float getTextScale() {
58            return mScale;
59        }
60
61        public void setTextScale(float scale) {
62            mScale = scale;
63            invalidate();
64        }
65
66        @Override
67        protected void onDraw(Canvas canvas) {
68            super.onDraw(canvas);
69            canvas.drawARGB(255, 255, 255, 255);
70
71            canvas.drawText("Hello libhwui!", 30.0f, 30.0f, mPaint);
72            canvas.translate(0.0f, 50.0f);
73            canvas.save();
74            canvas.scale(mScale, mScale);
75            canvas.drawText("Hello libhwui!", 30.0f, 30.0f, mPaint);
76            canvas.restore();
77        }
78    }
79}
80