-
Notifications
You must be signed in to change notification settings - Fork 585
/
Modifier.kt
41 lines (38 loc) · 1.39 KB
/
Modifier.kt
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
/*
* Copyright 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
*
* https://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 dev.chrisbanes.accompanist.coil
import androidx.compose.runtime.getValue
import androidx.compose.runtime.setValue
import androidx.compose.runtime.state
import androidx.compose.ui.Modifier
import androidx.compose.ui.composed
import androidx.compose.ui.onPositioned
import androidx.compose.ui.unit.IntSize
/**
* [Modifier] which will invoke [onSizeChanged] whenever the size of the element changes. This
* will be called after positioning, similar to `Modifier.onPositioned`.
*/
internal fun Modifier.onSizeChanged(
onSizeChanged: (IntSize) -> Unit
) = composed {
var lastSize by state<IntSize?> { null }
onPositioned { coordinates ->
if (coordinates.size != lastSize) {
lastSize = coordinates.size
onSizeChanged(coordinates.size)
}
}
}