| /* |
| * Copyright (C) 2020 The Android Open Source Project |
| * |
| * 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 com.android.systemui.media |
| |
| import android.graphics.Rect |
| import android.view.View |
| import android.view.ViewGroup |
| |
| private val EMPTY_RECT = Rect(0,0,0,0) |
| |
| private val LAYOUT_CHANGE_LISTENER = object : View.OnLayoutChangeListener { |
| |
| override fun onLayoutChange(v: View?, left: Int, top: Int, right: Int, bottom: Int, |
| oldLeft: Int, oldTop: Int, oldRight: Int, oldBottom: Int) { |
| v?.let { |
| if (v.visibility == View.GONE) { |
| v.clipBounds = EMPTY_RECT |
| } else { |
| v.clipBounds = null |
| } |
| } |
| } |
| } |
| /** |
| * A helper class that clips all GONE children. Useful for transitions in motionlayout which |
| * don't clip its children. |
| */ |
| class GoneChildrenHideHelper private constructor() { |
| companion object { |
| @JvmStatic |
| fun clipGoneChildrenOnLayout(layout: ViewGroup) { |
| val childCount = layout.childCount |
| for (i in 0 until childCount) { |
| val child = layout.getChildAt(i) |
| child.addOnLayoutChangeListener(LAYOUT_CHANGE_LISTENER) |
| } |
| } |
| } |
| } |
