desktopMain.com.highcapable.flexiui.component.Dropdown.desktop.kt Maven / Gradle / Ivy

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/*
 * Flexi UI - A flexible and useful UI component library.
 * Copyright (C) 2019-2024 HighCapable
 * https://github.com/BetterAndroid/FlexiUI
 *
 * Apache License Version 2.0
 *
 * 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.
 *
 * This file is created by fankes on 2023/11/18.
 */
@file:Suppress("unused")

package com.highcapable.flexiui.component

import androidx.compose.foundation.layout.Box
import androidx.compose.foundation.layout.BoxScope
import androidx.compose.runtime.Composable
import androidx.compose.ui.Modifier
import androidx.compose.ui.layout.boundsInWindow
import androidx.compose.ui.layout.onGloballyPositioned
import androidx.compose.ui.platform.LocalDensity
import androidx.compose.ui.platform.LocalWindowInfo
import androidx.compose.ui.unit.Dp
import androidx.compose.ui.unit.toIntRect
import kotlin.math.max

@Composable
internal actual fun DropdownMenuMeasureBox(
    menuMaxHeight: (Dp) -> Unit,
    content: @Composable BoxScope.() -> Unit
) {
    val density = LocalDensity.current
    val windowInfo = LocalWindowInfo.current
    Box(
        modifier = Modifier.onGloballyPositioned {
            val boundsInWindow = it.boundsInWindow()
            val visibleWindowBounds = windowInfo.containerSize.toIntRect()
            val heightAbove = boundsInWindow.top - visibleWindowBounds.top
            val heightBelow = visibleWindowBounds.height - boundsInWindow.bottom
            menuMaxHeight(with(density) { max(heightAbove, heightBelow).toDp() })
        },
        content = content
    )
}