1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
|
/*
* Copyright (C) 2015 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.messaging.ui.mediapicker;
import android.animation.ObjectAnimator;
import android.animation.TimeAnimator;
import android.animation.TimeAnimator.TimeListener;
import android.content.Context;
import android.content.res.TypedArray;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Paint.Style;
import android.util.AttributeSet;
import android.util.Log;
import android.view.View;
import android.view.accessibility.AccessibilityNodeInfo;
import com.android.messaging.R;
import com.android.messaging.util.LogUtil;
/**
* This view draws circular sound levels. By default the sound levels are black, unless
* otherwise defined via {@link #mPrimaryLevelPaint}.
*/
public class SoundLevels extends View {
private static final String TAG = LogUtil.BUGLE_TAG;
private static final boolean DEBUG = false;
private boolean mCenterDefined;
private int mCenterX;
private int mCenterY;
// Paint for the main level meter, most closely follows the mic.
private final Paint mPrimaryLevelPaint;
// The minimum size of the levels as a percentage of the max, that is the size when volume is 0.
private final float mMinimumLevel;
// The minimum size of the levels, that is the size when volume is 0.
private final float mMinimumLevelSize;
// The maximum size of the levels, that is the size when volume is 100.
private final float mMaximumLevelSize;
// Generates clock ticks for the animation using the global animation loop.
private final TimeAnimator mSpeechLevelsAnimator;
private float mCurrentVolume;
// Indicates whether we should be animating the sound level.
private boolean mIsEnabled;
// Input level is pulled from here.
private AudioLevelSource mLevelSource;
public SoundLevels(final Context context) {
this(context, null);
}
public SoundLevels(final Context context, final AttributeSet attrs) {
this(context, attrs, 0);
}
public SoundLevels(final Context context, final AttributeSet attrs, final int defStyle) {
super(context, attrs, defStyle);
// Safe source, replaced with system one when attached.
mLevelSource = new AudioLevelSource();
mLevelSource.setSpeechLevel(0);
final TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.SoundLevels,
defStyle, 0);
mMaximumLevelSize = a.getDimensionPixelOffset(
R.styleable.SoundLevels_maxLevelRadius, 0);
mMinimumLevelSize = a.getDimensionPixelOffset(
R.styleable.SoundLevels_minLevelRadius, 0);
mMinimumLevel = mMinimumLevelSize / mMaximumLevelSize;
mPrimaryLevelPaint = new Paint();
mPrimaryLevelPaint.setColor(
a.getColor(R.styleable.SoundLevels_primaryColor, Color.BLACK));
mPrimaryLevelPaint.setFlags(Paint.ANTI_ALIAS_FLAG);
a.recycle();
// This animator generates ticks that invalidate the
// view so that the animation is synced with the global animation loop.
// TODO: We could probably remove this in favor of using postInvalidateOnAnimation
// which might improve things further.
mSpeechLevelsAnimator = new TimeAnimator();
mSpeechLevelsAnimator.setRepeatCount(ObjectAnimator.INFINITE);
mSpeechLevelsAnimator.setTimeListener(new TimeListener() {
@Override
public void onTimeUpdate(final TimeAnimator animation, final long totalTime,
final long deltaTime) {
invalidate();
}
});
}
@Override
protected void onDraw(final Canvas canvas) {
if (!mIsEnabled) {
return;
}
if (!mCenterDefined) {
// One time computation here, because we can't rely on getWidth() to be computed at
// constructor time or in onFinishInflate :(.
mCenterX = getWidth() / 2;
mCenterY = getWidth() / 2;
mCenterDefined = true;
}
final int level = mLevelSource.getSpeechLevel();
// Either ease towards the target level, or decay away from it depending on whether
// its higher or lower than the current.
if (level > mCurrentVolume) {
mCurrentVolume = mCurrentVolume + ((level - mCurrentVolume) / 4);
} else {
mCurrentVolume = mCurrentVolume * 0.95f;
}
final float radius = mMinimumLevel + (1f - mMinimumLevel) * mCurrentVolume / 100;
mPrimaryLevelPaint.setStyle(Style.FILL);
canvas.drawCircle(mCenterX, mCenterY, radius * mMaximumLevelSize, mPrimaryLevelPaint);
}
public void setLevelSource(final AudioLevelSource source) {
if (DEBUG) {
Log.d(TAG, "Speech source set.");
}
mLevelSource = source;
}
private void startSpeechLevelsAnimator() {
if (DEBUG) {
Log.d(TAG, "startAnimator()");
}
if (!mSpeechLevelsAnimator.isStarted()) {
mSpeechLevelsAnimator.start();
}
}
private void stopSpeechLevelsAnimator() {
if (DEBUG) {
Log.d(TAG, "stopAnimator()");
}
if (mSpeechLevelsAnimator.isStarted()) {
mSpeechLevelsAnimator.end();
}
}
@Override
protected void onDetachedFromWindow() {
super.onDetachedFromWindow();
stopSpeechLevelsAnimator();
}
@Override
public void setEnabled(final boolean enabled) {
if (enabled == mIsEnabled) {
return;
}
if (DEBUG) {
Log.d("TAG", "setEnabled: " + enabled);
}
super.setEnabled(enabled);
mIsEnabled = enabled;
setKeepScreenOn(enabled);
updateSpeechLevelsAnimatorState();
}
private void updateSpeechLevelsAnimatorState() {
if (mIsEnabled) {
startSpeechLevelsAnimator();
} else {
stopSpeechLevelsAnimator();
}
}
/**
* This is required to make the View findable by uiautomator
*/
@Override
public void onInitializeAccessibilityNodeInfo(final AccessibilityNodeInfo info) {
super.onInitializeAccessibilityNodeInfo(info);
info.setClassName(SoundLevels.class.getCanonicalName());
}
/**
* Set the alpha level of the sound circles.
*/
public void setPrimaryColorAlpha(final int alpha) {
mPrimaryLevelPaint.setAlpha(alpha);
}
}
|
