1 /* 2 * Copyright (C) 2024 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.systemui.qs.panels.ui.compose 18 19 import androidx.compose.runtime.Composable 20 import androidx.compose.ui.Modifier 21 import com.android.compose.animation.scene.ContentScope 22 import com.android.systemui.qs.panels.shared.model.SizedTile 23 import com.android.systemui.qs.panels.shared.model.TileRow 24 import com.android.systemui.qs.panels.ui.viewmodel.EditTileViewModel 25 import com.android.systemui.qs.panels.ui.viewmodel.TileViewModel 26 import com.android.systemui.qs.pipeline.shared.TileSpec 27 28 /** A layout of tiles, indicating how they should be composed when showing in QS or in edit mode. */ 29 interface GridLayout { 30 31 /** 32 * [listening] can be used to compose the grid but limit when tiles should be listening. It 33 * should be a function tracking a snapshot state. 34 */ 35 @Composable ContentScopenull36 fun ContentScope.TileGrid( 37 tiles: List<TileViewModel>, 38 modifier: Modifier, 39 listening: () -> Boolean, 40 ) 41 42 @Composable 43 fun EditTileGrid( 44 tiles: List<EditTileViewModel>, 45 modifier: Modifier, 46 onAddTile: (TileSpec, Int) -> Unit, 47 onRemoveTile: (TileSpec) -> Unit, 48 onSetTiles: (List<TileSpec>) -> Unit, 49 onStopEditing: () -> Unit, 50 ) 51 } 52 53 /** 54 * A type of [GridLayout] that can be paginated, to use together with [PaginatedGridLayout]. 55 * 56 * [splitIntoPages] determines how to split a list of tiles based on the number of rows and columns 57 * available. 58 */ 59 interface PaginatableGridLayout : GridLayout { 60 fun splitIntoPages( 61 tiles: List<TileViewModel>, 62 rows: Int, 63 columns: Int, 64 ): List<List<TileViewModel>> 65 66 companion object { 67 68 /** 69 * Splits a list of [SizedTile] into rows, each with at most [columns] occupied. 70 * 71 * It will leave gaps at the end of a row if the next [SizedTile] has [SizedTile.width] that 72 * is larger than the space remaining in the row. 73 */ 74 fun splitInRows( 75 tiles: List<SizedTile<TileViewModel>>, 76 columns: Int, 77 ): List<List<SizedTile<TileViewModel>>> { 78 val row = TileRow<TileViewModel>(columns) 79 80 return buildList { 81 for (tile in tiles) { 82 check(tile.width <= columns) 83 if (!row.maybeAddTile(tile)) { 84 // Couldn't add tile to previous row, create a row with the current tiles 85 // and start a new one 86 add(row.tiles) 87 row.clear() 88 row.maybeAddTile(tile) 89 } 90 } 91 if (row.tiles.isNotEmpty()) { 92 add(row.tiles) 93 } 94 } 95 } 96 } 97 } 98