鴻蒙NEXT實戰(zhàn)開發(fā)：【截屏】

展示全屏截圖和屏幕局部截圖。通過[screenshot]模塊實現(xiàn)屏幕截圖 ，通過[window]模塊實現(xiàn)隱私窗口切換，通過[display]模塊查詢當前隱私窗口。

效果預(yù)覽

使用說明：

1. 點擊右上角圖標打開彈窗，選擇截屏，展示全屏截圖；選擇局部截屏，選擇截屏區(qū)域，點擊右下角完成，展示局部截屏；
2. 點擊滑塊切換窗口隱私模式，隱私模式下截屏會彈出提示，拒絕截屏。

具體實現(xiàn)

本示例通過screenshot接口實現(xiàn)屏幕截圖 ，通過window接口實現(xiàn)隱私窗口切換，通過display接口查詢當前隱私窗口。

• 源碼鏈接：[Screenshot.ets]

/*

 * Copyright (c) 2022 Huawei Device Co., Ltd.

 * 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.

 */



import screenshot from '@ohos.screenshot'

import { Logger } from './Logger'

import { getCurrentWindow } from './WindowPrivacy'



// 屏幕截圖 默認參數(shù)screenshotOptions為空時 截全屏

export function getScreenshot(screenshotOption = {}) {

  return screenshot.save(screenshotOption)

}



// 設(shè)置全屏展示 isFullScreen: boolean

export function setFullScreen(context: Context, isFullScreen: boolean) {

  getCurrentWindow(context)

    .then(res = > {

      res.setFullScreen(isFullScreen, (err) = > {

        if (err.code) {

          Logger.error('failed set full-screen mode cause: ' + JSON.stringify(err))

          return

        }

        Logger.info('success set full-screen mode')

      })

    })

}

• [WindowPrivacy.ets]

/*

 * Copyright (c) 2022 Huawei Device Co., Ltd.

 * 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.

 */



import window from '@ohos.window'

import display from '@ohos.display'

import { ResponseData } from '../models/ResponseData'

import { Logger } from './Logger'



// 獲取當前窗口

export function getCurrentWindow(context: Context) {

  return window.getTopWindow(context)

}



// 判斷隱私窗口

export function hasPrivate(): ResponseData {

  let currentDisplay = null

  try {

    currentDisplay = display.getDefaultDisplaySync()

  } catch (exception) {

    return { status: 'failed', errorMessage: JSON.stringify(exception) }

  }

  if (currentDisplay === null) {

    return { status: 'failed', errorMessage: 'get current display failed' }

  }

  let ret = undefined

  try {

    ret = display.hasPrivateWindow(currentDisplay.id)

  } catch (exception) {

    return { status: 'failed', errorMessage: JSON.stringify(exception) }

  }

  if (ret === undefined) {

    return { status: 'failed', errorMessage: 'ret is undefined' }

  }

  return ret ? { status: 'success', errorMessage: '', result: true } :

    { status: 'success', errorMessage: '', result: false }

}





// 設(shè)置隱私窗口

export function setWindowPrivacyMode(context: Context, windowPrivacyMode: boolean) {

  let currentWindow = null

  getCurrentWindow(context)

    .then(res = > {

      currentWindow = res

      try {

        currentWindow.setWindowPrivacyMode(windowPrivacyMode, (err) = > {

          if (err.code) {

            Logger.error('set window privacy mode failed cause: ' + JSON.stringify(err))

            return

          }

          Logger.info(`set window privacy mode success ${windowPrivacyMode}`)

        })

      } catch (exception) {

        Logger.info('set window mode failed cause: ' + JSON.stringify(exception))

      }

    })

}

審核編輯 黃宇