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 16/** 17 * @file 18 * @kit BasicServicesKit 19 * @arkts 1.1&1.2 20 */ 21 22import { BusinessError } from './@ohos.base'; 23 24/** 25 * Provides interfaces to control the power of display. 26 * 27 * @namespace brightness 28 * @syscap SystemCapability.PowerManager.DisplayPowerManager 29 * @systemapi 30 * @since arkts {'1.1':'7', '1.2':'20'} 31 */ 32declare namespace brightness { 33 /** 34 * Sets the screen brightness. 35 * 36 * @param { int } value Brightness value, ranging from 0 to 255. 37 * value parameter must be of type int. 38 * @throws { BusinessError } 202 - Permission verification failed. A non-system application calls a system API. 39 * @throws { BusinessError } 401 - Parameter error. Possible causes: 1.Mandatory parameters are left unspecified; 40 * 2. Incorrect parameter types; 41 * @throws { BusinessError } 4700101 - Failed to connect to the service. 42 * @syscap SystemCapability.PowerManager.DisplayPowerManager 43 * @systemapi 44 * @since arkts {'1.1':'7', '1.2':'20'} 45 */ 46 function setValue(value: int): void; 47 48 /** 49 * Sets the screen brightness. 50 * 51 * @param { int } value - Brightness value, ranging from 0 to 255. 52 * value parameter must be of type int. 53 * @param { boolean } continuous - This parameter is used in the scenario of continuous adjustment to the brightness. 54 * You are advised to set this parameter to true during the continuous adjustment and 55 * to false at the end of the continuous adjustment for better performance. 56 * continuous parameter must be of type boolean. 57 * @throws { BusinessError } 202 - Permission verification failed. A non-system application calls a system API. 58 * @throws { BusinessError } 401 - Parameter error. Possible causes: 1.Mandatory parameters are left unspecified; 59 * 2. Incorrect parameter types; 60 * @throws { BusinessError } 4700101 - Failed to connect to the service. 61 * @syscap SystemCapability.PowerManager.DisplayPowerManager 62 * @systemapi 63 * @since arkts {'1.1':'11', '1.2':'20'} 64 */ 65 function setValue(value: int, continuous: boolean): void; 66} 67export default brightness; 68