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
|
/*
* Copyright (C) 2012 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.dialer.util;
import android.content.ContentResolver;
import android.content.Context;
import android.graphics.Paint;
import android.os.PowerManager;
import android.provider.Settings;
import android.provider.Settings.Global;
import android.support.annotation.NonNull;
import android.text.TextUtils;
import android.util.TypedValue;
import android.view.View;
import android.view.ViewGroup;
import android.view.ViewTreeObserver.OnGlobalLayoutListener;
import android.view.ViewTreeObserver.OnPreDrawListener;
import android.widget.TextView;
import java.util.Locale;
/** Provides static functions to work with views */
public class ViewUtil {
private ViewUtil() {}
/** Similar to {@link Runnable} but takes a View parameter to operate on */
public interface ViewRunnable {
void run(@NonNull View view);
}
/**
* Returns the width as specified in the LayoutParams
*
* @throws IllegalStateException Thrown if the view's width is unknown before a layout pass s
*/
public static int getConstantPreLayoutWidth(View view) {
// We haven't been layed out yet, so get the size from the LayoutParams
final ViewGroup.LayoutParams p = view.getLayoutParams();
if (p.width < 0) {
throw new IllegalStateException(
"Expecting view's width to be a constant rather " + "than a result of the layout pass");
}
return p.width;
}
/**
* Returns a boolean indicating whether or not the view's layout direction is RTL
*
* @param view - A valid view
* @return True if the view's layout direction is RTL
*/
public static boolean isViewLayoutRtl(View view) {
return view.getLayoutDirection() == View.LAYOUT_DIRECTION_RTL;
}
public static boolean isRtl() {
return TextUtils.getLayoutDirectionFromLocale(Locale.getDefault()) == View.LAYOUT_DIRECTION_RTL;
}
public static void resizeText(TextView textView, int originalTextSize, int minTextSize) {
final Paint paint = textView.getPaint();
final int width = textView.getWidth();
if (width == 0) {
return;
}
textView.setTextSize(TypedValue.COMPLEX_UNIT_PX, originalTextSize);
float ratio = width / paint.measureText(textView.getText().toString());
if (ratio <= 1.0f) {
textView.setTextSize(
TypedValue.COMPLEX_UNIT_PX, Math.max(minTextSize, originalTextSize * ratio));
}
}
/** Runs a piece of code just before the next draw, after layout and measurement */
public static void doOnPreDraw(
@NonNull final View view, final boolean drawNextFrame, final Runnable runnable) {
view.getViewTreeObserver()
.addOnPreDrawListener(
new OnPreDrawListener() {
@Override
public boolean onPreDraw() {
view.getViewTreeObserver().removeOnPreDrawListener(this);
runnable.run();
return drawNextFrame;
}
});
}
public static void doOnPreDraw(
@NonNull final View view, final boolean drawNextFrame, final ViewRunnable runnable) {
view.getViewTreeObserver()
.addOnPreDrawListener(
new OnPreDrawListener() {
@Override
public boolean onPreDraw() {
view.getViewTreeObserver().removeOnPreDrawListener(this);
runnable.run(view);
return drawNextFrame;
}
});
}
public static void doOnGlobalLayout(@NonNull final View view, final ViewRunnable runnable) {
view.getViewTreeObserver()
.addOnGlobalLayoutListener(
new OnGlobalLayoutListener() {
@Override
public void onGlobalLayout() {
view.getViewTreeObserver().removeOnGlobalLayoutListener(this);
runnable.run(view);
}
});
}
/**
* Returns {@code true} if animations should be disabled.
*
* <p>Animations should be disabled if {@link
* android.provider.Settings.Global#ANIMATOR_DURATION_SCALE} is set to 0 through system settings
* or the device is in power save mode.
*/
public static boolean areAnimationsDisabled(Context context) {
ContentResolver contentResolver = context.getContentResolver();
PowerManager powerManager = context.getSystemService(PowerManager.class);
return Settings.Global.getFloat(contentResolver, Global.ANIMATOR_DURATION_SCALE, 1.0f) == 0
|| powerManager.isPowerSaveMode();
}
}
|
