BringRectangleOnScreen.android.kt
/*
* Copyright 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.compose.foundation.relocation
import android.view.View
import androidx.compose.ui.Modifier
import android.graphics.Rect
import androidx.compose.runtime.DisposableEffect
import androidx.compose.ui.composed
import androidx.compose.ui.platform.LocalView
import androidx.compose.ui.platform.debugInspectorInfo
import androidx.compose.ui.geometry.Rect as ComposeRect
/**
* Platform specific internal API to bring a rectangle into view.
*/
internal actual class BringRectangleOnScreenRequester {
internal var view: View? = null
actual fun bringRectangleOnScreen(rect: ComposeRect) {
view?.requestRectangleOnScreen(rect.toRect(), false)
}
}
/**
* Companion Modifier to [BringRectangleOnScreenRequester].
*/
internal actual fun Modifier.bringRectangleOnScreenRequester(
bringRectangleOnScreenRequester: BringRectangleOnScreenRequester
): Modifier = composed(
debugInspectorInfo {
name = "bringRectangleOnScreenRequester"
properties["bringRectangleOnScreenRequester"] = bringRectangleOnScreenRequester
}
) {
val view = LocalView.current
DisposableEffect(view) {
bringRectangleOnScreenRequester.view = view
onDispose {
bringRectangleOnScreenRequester.view = null
}
}
Modifier
}
private fun ComposeRect.toRect(): Rect {
return Rect(left.toInt(), top.toInt(), right.toInt(), bottom.toInt())
}