SemanticsModifierNode.kt
/*
* Copyright 2022 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 androidx.compose.ui.node
import androidx.compose.ui.ExperimentalComposeUiApi
import androidx.compose.ui.geometry.Rect
import androidx.compose.ui.layout.boundsInRoot
import androidx.compose.ui.semantics.SemanticsActions
import androidx.compose.ui.semantics.SemanticsConfiguration
import androidx.compose.ui.semantics.getOrNull
@ExperimentalComposeUiApi
interface SemanticsModifierNode : DelegatableNode {
val semanticsConfiguration: SemanticsConfiguration
}
@ExperimentalComposeUiApi
fun SemanticsModifierNode.invalidateSemantics() = requireOwner().onSemanticsChange()
@ExperimentalComposeUiApi
fun SemanticsModifierNode.collapsedSemanticsConfiguration(): SemanticsConfiguration {
val next = localChild(Nodes.Semantics)
if (next == null || semanticsConfiguration.isClearingSemantics) {
return semanticsConfiguration
}
val config = semanticsConfiguration.copy()
config.collapsePeer(next.collapsedSemanticsConfiguration())
return config
}
@OptIn(ExperimentalComposeUiApi::class)
internal val SemanticsModifierNode.useMinimumTouchTarget: Boolean
get() = semanticsConfiguration.getOrNull(SemanticsActions.OnClick) != null
@OptIn(ExperimentalComposeUiApi::class)
internal fun SemanticsModifierNode.touchBoundsInRoot(): Rect {
if (!node.isAttached) {
return Rect.Zero
}
if (!useMinimumTouchTarget) {
return requireCoordinator(Nodes.Semantics).boundsInRoot()
}
return requireCoordinator(Nodes.Semantics).touchBoundsInRoot()
}