DslConstraintSet.kt
/*
* Copyright (C) 2021 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.constraintlayout.compose
import androidx.compose.runtime.Immutable
/**
* [ConstraintSet] implementation used in the kotlin DSL.
*/
@Immutable
internal class DslConstraintSet constructor(
val description: ConstraintSetScope.() -> Unit,
extendFrom: ConstraintSet? = null
) : DerivedConstraintSet {
internal val scope: ConstraintSetScope =
ConstraintSetScope(
extendFrom = (extendFrom as? DslConstraintSet)?.scope?.containerObject
).apply(description)
override val extendFrom: ConstraintSet? = null // Not needed
override fun applyToState(state: State) {
scope.applyTo(state)
}
override fun override(name: String, value: Float): ConstraintSet {
// nothing yet
return this
}
override fun equals(other: Any?): Boolean {
if (other is DslConstraintSet) {
return scope == other.scope
}
return false
}
override fun hashCode(): Int {
return scope.hashCode()
}
}