| /* |
| * 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.util |
| |
| import android.graphics.Rect |
| import android.util.IndentingPrintWriter |
| import android.view.View |
| import android.view.ViewGroup |
| import java.io.PrintWriter |
| |
| /** [Sequence] that yields all of the direct children of this [ViewGroup] */ |
| val ViewGroup.children |
| get() = sequence { |
| for (i in 0 until childCount) yield(getChildAt(i)) |
| } |
| |
| /** Inclusive version of [Iterable.takeWhile] */ |
| fun <T> Sequence<T>.takeUntil(pred: (T) -> Boolean): Sequence<T> = sequence { |
| for (x in this@takeUntil) { |
| yield(x) |
| if (pred(x)) { |
| break |
| } |
| } |
| } |
| |
| /** |
| * If `this` is an [IndentingPrintWriter], it will process block inside an indentation level. |
| * |
| * If not, this will just process block. |
| */ |
| inline fun PrintWriter.indentIfPossible(block: PrintWriter.() -> Unit) { |
| if (this is IndentingPrintWriter) increaseIndent() |
| block() |
| if (this is IndentingPrintWriter) decreaseIndent() |
| } |
| |
| /** Convenience extension property for [View.getBoundsOnScreen]. */ |
| val View.boundsOnScreen: Rect |
| get() { |
| val bounds = Rect() |
| getBoundsOnScreen(bounds) |
| return bounds |
| } |