net.peanuuutz.fork.ui.ui.node.LayoutInfo.kt Maven / Gradle / Ivy

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/*
 * Copyright 2020 The Android Open Source Project
 * Modifications Copyright 2022 Peanuuutz
 *
 * 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 net.peanuuutz.fork.ui.ui.node

import net.peanuuutz.fork.ui.ui.draw.shape.Rect
import net.peanuuutz.fork.ui.ui.draw.shape.toRect
import net.peanuuutz.fork.ui.ui.unit.FloatOffset
import net.peanuuutz.fork.ui.ui.unit.IntSize
import kotlin.math.max
import kotlin.math.min

sealed interface LayoutInfo : ParentDataContainer {
    val isAttached: Boolean

    val size: IntSize

    val rootInfo: LayoutInfo

    val parentInfo: LayoutInfo?

    val childrenInfo: List

    val outerInfo: LayoutInfo?

    val innerInfo: LayoutInfo?

    fun windowToLocal(relativeToWindow: FloatOffset): FloatOffset

    fun localToWindow(relativeToLocal: FloatOffset): FloatOffset

    fun localToRoot(relativeToLocal: FloatOffset): FloatOffset

    fun localPositionOf(
        other: LayoutInfo,
        relativeToOther: FloatOffset = FloatOffset.Zero
    ): FloatOffset

    fun localBoundsOf(
        other: LayoutInfo,
        clip: Boolean = true
    ): Rect
}

fun LayoutInfo.rootToLocal(relativeToRoot: FloatOffset): FloatOffset {
    return localPositionOf(rootInfo, relativeToRoot)
}

fun LayoutInfo.positionInWindow(): FloatOffset {
    return localToWindow(FloatOffset.Zero)
}

fun LayoutInfo.positionInRoot(): FloatOffset {
    return localToRoot(FloatOffset.Zero)
}

fun LayoutInfo.positionInParent(): FloatOffset {
    return parentInfo?.localPositionOf(this) ?: FloatOffset.Zero
}

fun LayoutInfo.boundsInWindow(clip: Boolean): Rect {
    val rootInfo = rootInfo
    val (leftX, topY, rightX, bottomY) = rootInfo.localBoundsOf(this, clip)
    val topLeft = rootInfo.localToWindow(FloatOffset(leftX, topY))
    val bottomLeft = rootInfo.localToWindow(FloatOffset(leftX, bottomY))
    val bottomRight = rootInfo.localToWindow(FloatOffset(rightX, bottomY))
    val topRight = rootInfo.localToWindow(FloatOffset(rightX, topY))
    val windowLeftX = min(min(topLeft.x, bottomLeft.x), min(bottomRight.x, topRight.x))
    val windowTopY = min(min(topLeft.y, bottomLeft.y), min(bottomRight.y, topRight.y))
    val windowRightX = max(max(topLeft.x, bottomLeft.x), max(bottomRight.x, topRight.x))
    val windowBottomY = max(max(topLeft.y, bottomLeft.y), max(bottomRight.y, topRight.y))
    return Rect(windowLeftX, windowTopY, windowRightX, windowBottomY)
}

fun LayoutInfo.boundsInRoot(clip: Boolean): Rect {
    return rootInfo.localBoundsOf(this, clip)
}

fun LayoutInfo.boundsInParent(clip: Boolean): Rect {
    return parentInfo?.localBoundsOf(this, clip) ?: size.toRect()
}