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feat: Supporting flip and fold devices
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235 changes: 235 additions & 0 deletions
235
app/src/main/kotlin/cz/lastaapps/menza/ui/util/ChildPanelsFoldingLayout.kt
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,235 @@ | ||
| /* | ||
| * Copyright 2025, Petr Laštovička as Lasta apps, All rights reserved | ||
| * | ||
| * This file is part of Menza. | ||
| * | ||
| * Menza is free software: you can redistribute it and/or modify | ||
| * it under the terms of the GNU General Public License as published by | ||
| * the Free Software Foundation, either version 3 of the License, or | ||
| * (at your option) any later version. | ||
| * | ||
| * Menza is distributed in the hope that it will be useful, | ||
| * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| * GNU General Public License for more details. | ||
| * | ||
| * You should have received a copy of the GNU General Public License | ||
| * along with Menza. If not, see <https://www.gnu.org/licenses/>. | ||
| */ | ||
|
|
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| @file:OptIn(ExperimentalDecomposeApi::class) | ||
|
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| package cz.lastaapps.menza.ui.util | ||
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| import androidx.compose.foundation.layout.fillMaxSize | ||
| import androidx.compose.runtime.Composable | ||
| import androidx.compose.runtime.getValue | ||
| import androidx.compose.runtime.mutableStateOf | ||
| import androidx.compose.runtime.remember | ||
| import androidx.compose.runtime.setValue | ||
| import androidx.compose.ui.Modifier | ||
| import androidx.compose.ui.geometry.Offset | ||
| import androidx.compose.ui.layout.Measurable | ||
| import androidx.compose.ui.layout.MeasurePolicy | ||
| import androidx.compose.ui.layout.MeasureResult | ||
| import androidx.compose.ui.layout.MeasureScope | ||
| import androidx.compose.ui.layout.onGloballyPositioned | ||
| import androidx.compose.ui.layout.positionInWindow | ||
| import androidx.compose.ui.unit.Constraints | ||
| import androidx.compose.ui.unit.IntSize | ||
| import androidx.window.layout.FoldingFeature | ||
| import com.arkivanov.decompose.ExperimentalDecomposeApi | ||
| import com.arkivanov.decompose.extensions.compose.experimental.panels.ChildPanelsLayout | ||
| import com.arkivanov.decompose.router.panels.ChildPanelsMode | ||
| import cz.lastaapps.menza.ui.locals.FoldingClass | ||
| import cz.lastaapps.menza.ui.locals.LocalFoldProvider | ||
| import cz.lastaapps.menza.ui.locals.isBookPosture | ||
| import cz.lastaapps.menza.ui.locals.isTableTopPosture | ||
|
|
||
| class ChildPanelsFoldingLayout( | ||
| dualWeights: Pair<Float, Float> = 1F to 1F, | ||
| private val enableTableTop: Boolean = true, | ||
| private val minWeightsTableTop: Pair<Float, Float> = .42F to .42F, | ||
| private val enableBook: Boolean = true, | ||
| private val minWeightsBook: Pair<Float, Float> = .32F to .32F, | ||
| ) : ChildPanelsLayout { | ||
| private val singleMeasurePolicy = SingleMeasurePolicy() | ||
| private val dualMeasurePolicy = DualMeasurePolicy(weights = dualWeights) | ||
|
|
||
| private data class WindowPosition( | ||
| val positionInWindow: Offset, | ||
| val size: IntSize, | ||
| ) | ||
|
|
||
| @Composable | ||
| override fun Layout( | ||
| mode: ChildPanelsMode, | ||
| main: @Composable () -> Unit, | ||
| details: @Composable () -> Unit, | ||
| extra: @Composable () -> Unit, | ||
| ) { | ||
| var layoutCoordinates by remember { mutableStateOf<WindowPosition?>(null) } | ||
|
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| val measurePolicy = | ||
| when (mode) { | ||
| ChildPanelsMode.SINGLE -> singleMeasurePolicy | ||
| ChildPanelsMode.DUAL -> { | ||
| val foldingFeature = | ||
| (LocalFoldProvider.current as? FoldingClass.Supported)?.foldingFeature | ||
| remember(foldingFeature, layoutCoordinates) { | ||
| layoutCoordinates?.let { | ||
| when { | ||
| enableTableTop && foldingFeature.isTableTopPosture() -> | ||
| TableTopMeasurePolicy( | ||
| foldingFeature, | ||
| it, | ||
| minWeightsTableTop, | ||
| ) | ||
|
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||
| enableBook && foldingFeature.isBookPosture() -> | ||
| BookMeasurePolicy( | ||
| foldingFeature, | ||
| it, | ||
| minWeightsBook, | ||
| ) | ||
|
|
||
| else -> null | ||
| } | ||
| } ?: dualMeasurePolicy | ||
| } | ||
| } | ||
|
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| ChildPanelsMode.TRIPLE -> error("Not supported") | ||
| } | ||
|
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| androidx.compose.ui.layout.Layout( | ||
| content = { | ||
| main() | ||
| details() | ||
| }, | ||
| modifier = | ||
| Modifier | ||
| .fillMaxSize() | ||
| .onGloballyPositioned { | ||
| layoutCoordinates = | ||
| WindowPosition( | ||
| positionInWindow = it.positionInWindow(), | ||
| size = it.size, | ||
| ) | ||
| }.fillMaxSize(), | ||
| measurePolicy = measurePolicy, | ||
| ) | ||
| } | ||
|
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| private class SingleMeasurePolicy : MeasurePolicy { | ||
| override fun MeasureScope.measure( | ||
| measurables: List<Measurable>, | ||
| constraints: Constraints, | ||
| ): MeasureResult { | ||
| val placeables = measurables.map { it.measure(constraints) } | ||
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| return layout(constraints.maxWidth, constraints.maxHeight) { | ||
| placeables.forEach { | ||
| it.placeRelative(x = 0, y = 0) | ||
| } | ||
| } | ||
| } | ||
| } | ||
|
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| private class DualMeasurePolicy( | ||
| weights: Pair<Float, Float>, | ||
| ) : MeasurePolicy { | ||
| private val primaryWeight = weights.first / (weights.first + weights.second) | ||
|
|
||
| override fun MeasureScope.measure( | ||
| measurables: List<Measurable>, | ||
| constraints: Constraints, | ||
| ): MeasureResult { | ||
| val w1 = (constraints.maxWidth.toFloat() * primaryWeight).toInt() | ||
| val w2 = constraints.maxWidth - w1 | ||
| val placeable1 = measurables[0].measure(constraints.copy(maxWidth = w1, minWidth = w1)) | ||
| val placeable2 = measurables[1].measure(constraints.copy(maxWidth = w2, minWidth = w2)) | ||
|
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| return layout(constraints.maxWidth, constraints.maxHeight) { | ||
| placeable1.placeRelative(x = 0, y = 0) | ||
| placeable2.placeRelative(x = w1, y = 0) | ||
| } | ||
| } | ||
| } | ||
|
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| private class TableTopMeasurePolicy( | ||
| foldingFeature: FoldingFeature, | ||
| layoutCoordinates: WindowPosition, | ||
| minWeights: Pair<Float, Float>, | ||
| ) : MeasurePolicy { | ||
| private val topSize = | ||
| (foldingFeature.bounds.top - layoutCoordinates.positionInWindow.y) | ||
| .coerceIn( | ||
| (minWeights.first * layoutCoordinates.size.height), | ||
| ((1F - minWeights.second) * layoutCoordinates.size.height), | ||
| ).toInt() | ||
| private val boundsHeight = foldingFeature.bounds.height() | ||
| private val bottomSize = layoutCoordinates.size.height - topSize - boundsHeight | ||
|
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| override fun MeasureScope.measure( | ||
| measurables: List<Measurable>, | ||
| constraints: Constraints, | ||
| ): MeasureResult { | ||
| val placeable1 = | ||
| measurables[0].measure( | ||
| constraints.copy( | ||
| maxHeight = bottomSize, | ||
| minHeight = bottomSize, | ||
| ), | ||
| ) | ||
| val placeable2 = | ||
| measurables[1].measure( | ||
| constraints.copy( | ||
| maxHeight = topSize, | ||
| minHeight = topSize, | ||
| ), | ||
| ) | ||
|
|
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| return layout(constraints.maxWidth, constraints.maxHeight) { | ||
| placeable1.placeRelative(x = 0, y = topSize + boundsHeight) | ||
| placeable2.placeRelative(x = 0, y = 0) | ||
| } | ||
| } | ||
| } | ||
|
|
||
| private class BookMeasurePolicy( | ||
| foldingFeature: FoldingFeature, | ||
| layoutCoordinates: WindowPosition, | ||
| minWeights: Pair<Float, Float>, | ||
| ) : MeasurePolicy { | ||
| private val leftSize = | ||
| (foldingFeature.bounds.left - layoutCoordinates.positionInWindow.x) | ||
| .coerceIn( | ||
| (minWeights.first * layoutCoordinates.size.width), | ||
| ((1F - minWeights.second) * layoutCoordinates.size.width), | ||
| ).toInt() | ||
| private val boundsWidth = foldingFeature.bounds.width() | ||
| private val rightSize = layoutCoordinates.size.width - leftSize - boundsWidth | ||
|
|
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| override fun MeasureScope.measure( | ||
| measurables: List<Measurable>, | ||
| constraints: Constraints, | ||
| ): MeasureResult { | ||
| val placeable1 = | ||
| measurables[0].measure(constraints.copy(maxWidth = leftSize, minWidth = leftSize)) | ||
| val placeable2 = | ||
| measurables[1].measure(constraints.copy(maxWidth = rightSize, minWidth = rightSize)) | ||
|
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| return layout(constraints.maxWidth, constraints.maxHeight) { | ||
| placeable1.placeRelative(x = 0, y = 0) | ||
| placeable2.placeRelative(x = leftSize + boundsWidth, y = 0) | ||
| } | ||
| } | ||
| } | ||
| } | ||
|
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| @Composable | ||
| fun rememberChildPanelsFoldingLayout(): ChildPanelsLayout = | ||
| remember { | ||
| ChildPanelsFoldingLayout() | ||
| } |
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