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
|
/*
* Copyright (C) 2020 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.systemui.util
import android.content.Context
import android.util.AttributeSet
import android.widget.LinearLayout
/**
* Basically a normal linear layout but doesn't grow its children with weight 1 even when its
* measured with exactly.
*/
class NeverExactlyLinearLayout @JvmOverloads constructor(
context: Context,
attrs: AttributeSet? = null,
defStyleAttr: Int = 0
) : LinearLayout(context, attrs, defStyleAttr) {
override fun onMeasure(widthMeasureSpec: Int, heightMeasureSpec: Int) {
val (widthExactly, usedWidthSpec, width) = getNonExactlyMeasureSpec(widthMeasureSpec)
val (heightExactly, usedHeightSpec, height) = getNonExactlyMeasureSpec(heightMeasureSpec)
super.onMeasure(usedWidthSpec, usedHeightSpec)
if (widthExactly || heightExactly) {
val newWidth = if (widthExactly) width else measuredWidth
val newHeight = if (heightExactly) height else measuredHeight
setMeasuredDimension(newWidth, newHeight)
}
}
/**
* Obtain a measurespec that's not exactly
*
* @return a triple, where we return 1. if this was exactly, 2. the new measurespec, 3. the size
* of the measurespec
*/
private fun getNonExactlyMeasureSpec(measureSpec: Int): Triple<Boolean, Int, Int> {
var newSpec = measureSpec
val isExactly = MeasureSpec.getMode(measureSpec) == MeasureSpec.EXACTLY
val size = MeasureSpec.getSize(measureSpec)
if (isExactly) {
newSpec = MeasureSpec.makeMeasureSpec(size, MeasureSpec.AT_MOST)
}
return Triple(isExactly, newSpec, size)
}
}
|
