1/* 2 * Copyright (c) 2021-2022 Huawei Device Co., Ltd. 3 * Licensed under the Apache License, Version 2.0 (the "License"); 4 * you may not use this file except in compliance with the License. 5 * You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software 10 * distributed under the License is distributed on an "AS IS" BASIS, 11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 * See the License for the specific language governing permissions and 13 * limitations under the License. 14 */ 15 16import {BusinessError} from './basic'; 17 18/** 19 * Provides interfaces to control the power of display. 20 * 21 * @syscap SystemCapability.PowerManager.DisplayPowerManager 22 * @systemapi 23 * @since 7 24 */ 25declare namespace brightness { 26 /** 27 * Sets the screen brightness. 28 * 29 * @param {number} value Brightness value, ranging from 0 to 255. 30 * @throws {BusinessError} 401 - If the value is not valid. 31 * @throws {BusinessError} 4700101 - If connecting to the service failed. 32 * @systemapi 33 * @since 7 34 */ 35 function setValue(value: number): void; 36} 37export default brightness; 38