1/*
2 * Copyright (C) 2012 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.animation.ValueAnimator;
21import android.app.Activity;
22import android.content.Context;
23import android.graphics.Canvas;
24import android.graphics.Color;
25import android.graphics.Paint;
26import android.os.Bundle;
27import android.text.Spannable;
28import android.text.SpannableStringBuilder;
29import android.text.style.BackgroundColorSpan;
30import android.text.style.ForegroundColorSpan;
31import android.text.style.ImageSpan;
32import android.text.style.SuggestionSpan;
33import android.text.style.UnderlineSpan;
34import android.view.View;
35import android.widget.Button;
36import android.widget.EditText;
37import android.widget.LinearLayout;
38import android.widget.TextView;
39
40public class ViewPropertyAlphaActivity extends Activity {
41
42    MyView myViewAlphaDefault, myViewAlphaHandled;
43
44    @Override
45    protected void onCreate(Bundle savedInstanceState) {
46        super.onCreate(savedInstanceState);
47
48        setContentView(R.layout.view_properties);
49
50        getWindow().getDecorView().postDelayed(new Runnable() {
51            @Override
52            public void run() {
53                startAnim(R.id.button);
54                startAnim(R.id.textview);
55                startAnim(R.id.spantext);
56                startAnim(R.id.edittext);
57                startAnim(R.id.selectedtext);
58                startAnim(R.id.textviewbackground);
59                startAnim(R.id.layout);
60                startAnim(R.id.imageview);
61                startAnim(myViewAlphaDefault);
62                startAnim(myViewAlphaHandled);
63                EditText selectedText = findViewById(R.id.selectedtext);
64                selectedText.setSelection(3, 8);
65            }
66        }, 2000);
67
68        Button invalidator = findViewById(R.id.invalidateButton);
69        invalidator.setOnClickListener(new View.OnClickListener() {
70            @Override
71            public void onClick(View v) {
72                findViewById(R.id.textview).invalidate();
73                findViewById(R.id.spantext).invalidate();
74            }
75        });
76
77        TextView textView = findViewById(R.id.spantext);
78        if (textView != null) {
79            SpannableStringBuilder text =
80                    new SpannableStringBuilder("Now this is a short text message with spans");
81
82            text.setSpan(new BackgroundColorSpan(Color.RED), 0, 3,
83                    Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
84            text.setSpan(new ForegroundColorSpan(Color.BLUE), 4, 9,
85                    Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
86            text.setSpan(new SuggestionSpan(this, new String[]{"longer"}, 3), 11, 16,
87                    Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
88            text.setSpan(new UnderlineSpan(), 17, 20,
89                    Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
90            text.setSpan(new ImageSpan(this, R.drawable.icon), 21, 22,
91                    Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
92
93            textView.setText(text);
94        }
95
96        LinearLayout container = findViewById(R.id.container);
97        myViewAlphaDefault = new MyView(this, false);
98        myViewAlphaDefault.setLayoutParams(new LinearLayout.LayoutParams(75, 75));
99        container.addView(myViewAlphaDefault);
100        myViewAlphaHandled = new MyView(this, true);
101        myViewAlphaHandled.setLayoutParams(new LinearLayout.LayoutParams(75, 75));
102        container.addView(myViewAlphaHandled);
103    }
104
105    private void startAnim(View target) {
106        ObjectAnimator anim = ObjectAnimator.ofFloat(target, View.ALPHA, 0);
107        anim.setRepeatCount(ValueAnimator.INFINITE);
108        anim.setRepeatMode(ValueAnimator.REVERSE);
109        anim.setDuration(1000);
110        anim.start();
111    }
112    private void startAnim(int id) {
113        startAnim(findViewById(id));
114    }
115
116    private static class MyView extends View {
117        private int mMyAlpha = 255;
118        private boolean mHandleAlpha;
119        private Paint mPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
120
121        private MyView(Context context, boolean handleAlpha) {
122            super(context);
123            mHandleAlpha = handleAlpha;
124            mPaint.setColor(Color.RED);
125        }
126
127        @Override
128        protected void onDraw(Canvas canvas) {
129            if (mHandleAlpha) {
130                mPaint.setAlpha(mMyAlpha);
131            }
132            canvas.drawCircle(30, 30, 30, mPaint);
133        }
134
135        @Override
136        protected boolean onSetAlpha(int alpha) {
137            if (mHandleAlpha) {
138                mMyAlpha = alpha;
139                return true;
140            }
141            return super.onSetAlpha(alpha);
142        }
143    }
144
145}
146