1 /* <lambda>null2 * 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 18 package com.android.wallpaper.picker 19 20 import android.content.Context 21 import android.util.AttributeSet 22 import android.widget.FrameLayout 23 import androidx.core.view.children 24 import com.android.wallpaper.util.ScreenSizeCalculator 25 26 /** 27 * [FrameLayout] that sizes itself and its children layout with a given fixed width and a calculated 28 * height according to the screen aspect ratio. 29 */ 30 class FixedWidthDisplayRatioFrameLayout( 31 context: Context, 32 attrs: AttributeSet?, 33 ) : FrameLayout(context, attrs) { 34 35 override fun onMeasure(widthMeasureSpec: Int, heightMeasureSpec: Int) { 36 val screenAspectRatio = ScreenSizeCalculator.getInstance().getScreenAspectRatio(context) 37 val width = MeasureSpec.getSize(widthMeasureSpec) 38 val height = (width * screenAspectRatio).toInt() 39 super.onMeasure( 40 MeasureSpec.makeMeasureSpec(width, MeasureSpec.EXACTLY), 41 MeasureSpec.makeMeasureSpec(height, MeasureSpec.EXACTLY), 42 ) 43 children.forEach { child -> 44 child.measure( 45 MeasureSpec.makeMeasureSpec(width, MeasureSpec.EXACTLY), 46 MeasureSpec.makeMeasureSpec(height, MeasureSpec.EXACTLY), 47 ) 48 } 49 } 50 } 51