libraries/flicker/src/com/android/server/wm/traces/common/Size.kt

/*
 * 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.server.wm.traces.common

import kotlin.js.JsName

/**
 * Wrapper for SizeProto (frameworks/native/services/surfaceflinger/layerproto/common.proto)
 *
 * This class is used by flicker and Winscope
 */
open class Size
protected constructor(@JsName("width") val width: Int = 0, @JsName("height") val height: Int = 0) {
    @JsName("isEmpty")
    val isEmpty: Boolean
        get() = height == 0 || width == 0

    @JsName("isNotEmpty")
    val isNotEmpty: Boolean
        get() = !isEmpty

    open fun prettyPrint(): String = "$width x $height"

    override fun toString(): String = if (isEmpty) "[empty]" else prettyPrint()

    override fun equals(other: Any?): Boolean =
        other is Size && other.height == height && other.width == width

    override fun hashCode(): Int {
        var result = width
        result = 31 * result + height
        return result
    }

    companion object {
        @JsName("EMPTY")
        val EMPTY: Size
            get() = withCache { Size() }
        @JsName("from") fun from(width: Int, height: Int): Size = withCache { Size(width, height) }
    }
}