1 /* 2 * Copyright (C) 2023 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.launcher3.responsive 18 19 import android.content.res.TypedArray 20 import com.android.launcher3.R 21 import com.android.launcher3.responsive.ResponsiveSpec.Companion.ResponsiveSpecType 22 import com.android.launcher3.responsive.ResponsiveSpec.DimensionType 23 24 /** 25 * Base class for responsive specs that holds a list of width and height specs. 26 * 27 * @param widthSpecs List of width responsive specifications 28 * @param heightSpecs List of height responsive specifications 29 */ 30 class ResponsiveSpecGroup<T : IResponsiveSpec>( 31 val aspectRatio: Float, 32 widthSpecs: List<T>, 33 heightSpecs: List<T> 34 ) { 35 val widthSpecs: List<T> 36 val heightSpecs: List<T> 37 38 init { <lambda>null39 check(aspectRatio > 0f) { "Invalid aspect ratio! Aspect ratio should be bigger than zero." } <lambda>null40 this.widthSpecs = widthSpecs.sortedBy { it.maxAvailableSize } <lambda>null41 this.heightSpecs = heightSpecs.sortedBy { it.maxAvailableSize } 42 } 43 44 /** 45 * Get a [ResponsiveSpec] within the breakpoint. 46 * 47 * @param type Type of the spec to be retrieved (width or height) 48 * @param availableSize The breakpoint for the spec 49 * @return A [ResponsiveSpec]. 50 */ getSpecnull51 fun getSpec(type: DimensionType, availableSize: Int): T { 52 val spec = 53 if (type == DimensionType.WIDTH) { 54 widthSpecs.firstOrNull { availableSize <= it.maxAvailableSize } 55 } else { 56 heightSpecs.firstOrNull { availableSize <= it.maxAvailableSize } 57 } 58 check(spec != null) { "No available $type spec found within $availableSize. $this" } 59 return spec 60 } 61 toStringnull62 override fun toString(): String { 63 fun printSpec(spec: IResponsiveSpec) = 64 when (spec.specType) { 65 ResponsiveSpecType.AllApps, 66 ResponsiveSpecType.Folder, 67 ResponsiveSpecType.Workspace -> (spec as ResponsiveSpec).toString() 68 ResponsiveSpecType.Hotseat -> (spec as HotseatSpec).toString() 69 ResponsiveSpecType.Cell -> (spec as CellSpec).toString() 70 } 71 72 val widthSpecsString = widthSpecs.joinToString(", ") { printSpec(it) } 73 val heightSpecsString = heightSpecs.joinToString(", ") { printSpec(it) } 74 return "ResponsiveSpecGroup(" + 75 "aspectRatio=${aspectRatio}, " + 76 "widthSpecs=[${widthSpecsString}], " + 77 "heightSpecs=[${heightSpecsString}]" + 78 ")" 79 } 80 81 companion object { 82 const val XML_GROUP_NAME = "specs" 83 createnull84 fun <T : IResponsiveSpec> create( 85 attrs: TypedArray, 86 specs: List<T> 87 ): ResponsiveSpecGroup<T> { 88 val (widthSpecs, heightSpecs) = 89 specs.partition { it.dimensionType == DimensionType.WIDTH } 90 val aspectRatio = attrs.getFloat(R.styleable.ResponsiveSpecGroup_maxAspectRatio, 0f) 91 return ResponsiveSpecGroup(aspectRatio, widthSpecs, heightSpecs) 92 } 93 } 94 } 95