ImageKnife/entry/src/main/ets/pages/basicTestFileIOPage.ets

/*
 * Copyright (C) 2021 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 { FileUtils,  ImageKnifeGlobal} from '@ohos/libraryimageknife'
import resourceManager from '@ohos.resourceManager';
import { BusinessError } from '@ohos.base'
import common from '@ohos.app.ability.common';
@Entry
@Component
struct basicTestFileIOPage {
  @State filePath: string = '查看featureAbility路径';
  appFilePath = '';
  appCachePath = '';
  @State imageHint: string = '文字提醒1'
  @State imageHint2: string = '文字提醒2'
  @State imageFile: string = ''

  @State imageRes: Resource = $r('app.media.pngSample')
  @State imagePixelMap?: PixelMap = undefined
  @State normalPixelMap: boolean = false;
  @State normalResource: boolean = false;

  watchPathChange() {
    console.log('watchPathChange');
  }

  build() {
    Scroll() {
      Flex({ direction: FlexDirection.Column, alignItems: ItemAlign.Center, justifyContent: FlexAlign.Center }) {
        Text(this.filePath).fontSize(20)
        Button('featureAbility.getContext().getFilesDir()')
          .margin({ top: 10 })
          .onClick(() => {

            let data:string = (ImageKnifeGlobal.getInstance().getHapContext() as common.UIAbilityContext).filesDir as string;
            console.log('ImageKnife filesPath = ' + data)
            this.filePath = data
            this.appFilePath = data;

          })
        Button('featureAbility.getContext().getCacheDir()')
          .margin({ top: 10 })
          .onClick(() => {

            let data:string = (ImageKnifeGlobal.getInstance().getHapContext() as common.UIAbilityContext).cacheDir as string;
            console.log('ImageKnife cachesPath = ' + data)
            this.filePath = data
            this.appFilePath = data;

          })
        Text(this.imageHint)
        Button('files目录创建Folder1和Folder2 验证statSync mkdirSync')
          .margin({ top: 10 })
          .onClick(() => {
            if(this.appFilePath == '' || this.appFilePath == null){
              this.imageHint = 'appFilePath未取到值,请按顺序从上往下,从左往右依次测试'
              return
            }
            console.log('files目录创建Folder1和Folder2 验证statSync mkdirSync')
            try {
              FileUtils.getInstance()
                .createFolder(this.appFilePath + '/Folder1');
              FileUtils.getInstance()
                .createFolder(this.appFilePath + '/Folder2');
            } catch (e) {
              console.log('appFilePath未取到值,请按顺序从上往下,从左往右依次测试"'+JSON.stringify(e));
            }
          })
        Button('将media资源存入Folder1 验证writeSync mkdirSync createStreamSync')
          .margin({ top: 10 })
          .onClick(() => {
            console.log('将media资源存入Folder1 验证writeSync mkdirSync createStreamSync')
            if(this.appFilePath == '' || this.appFilePath == null){
              this.appFilePath = 'appFilePath未取到值,请按顺序从上往下,从左往右依次测试'
              return
            }
            ((ImageKnifeGlobal.getInstance().getHapContext() as common.UIAbilityContext).resourceManager as resourceManager.ResourceManager)
              .getMediaContent($r('app.media.gifSample').id)
              .then(data => {
                console.log('result.getMedia')
                console.log('basicTestFileIOPage - 本地加载资源 解析后数据data length= ' + data.byteLength)
                let arrayBuffer = this.typedArrayToBuffer(data);
                FileUtils.getInstance().writeFile(this.appFilePath + '/Folder1/jpgSample.gif', arrayBuffer)
                this.imageFile = 'file://' + this.appFilePath + '/Folder1/jpgSample.gif'
                console.log('Folder1 imaeFile =' + this.imageFile)
              })
              .catch((err:BusinessError) => {
                console.log('basicTestFileIOPage - 本地加载资源err' + JSON.stringify(err as BusinessError));
              })
          })
        Text(this.imageHint2)
        Button('copy:Folder1至Folder2， 验证copyFileSync')
          .margin({ top: 10 })
          .onClick(() => {
            console.log('copy:Folder1至Folder2， 验证copyFileSync')
            if(this.appFilePath == '' || this.appFilePath == null){
              this.imageHint2 = 'appFilePath未取到值,请按顺序从上往下,从左往右依次测试'
              return
            }
            try {
              let filePath1 = this.appFilePath + '/Folder1/jpgSample.gif';
              let filePath2 = this.appFilePath + '/Folder2/jpgSample.gif';
              FileUtils.getInstance().createFolder(this.appFilePath + '/Folder1')
              FileUtils.getInstance().createFolder(this.appFilePath + '/Folder2')
              FileUtils.getInstance().copyFile(filePath1, filePath2);
              this.imageFile = 'file://' + this.appFilePath + '/Folder2/jpgSample.gif'
              console.log('Folder2 imaeFile =' + this.imageFile)
            } catch (e) {
              console.log('appFilePath未取到值,请按顺序从上往下,从左往右依次测试:'+JSON.stringify(e))
            }

          })
        Flex({ direction: FlexDirection.Row, alignItems: ItemAlign.Center, justifyContent: FlexAlign.Center }) {
          Button('显示空PixelMap')
            .margin({ left: 10 })
            .onClick(() => {
              this.normalPixelMap = true;
              this.normalResource = false;
            })
          Button('显示RES')
            .margin({ left: 10 })
            .onClick(() => {
              this.normalPixelMap = false;
              this.normalResource = true;
            })
          Button('显示String')
            .margin({ left: 10 })
            .onClick(() => {
              this.normalPixelMap = false;
              this.normalResource = false;
            })
        }


        Image(this.normalPixelMap ? this.imagePixelMap : (this.normalResource ? this.imageRes : this.imageFile))
          .width(200)
          .height(200)
          .backgroundColor(Color.Pink)
      }
      .width('100%')
      .height('100%')
    }

  }

  typedArrayToBuffer(array: Uint8Array): ArrayBuffer {
    return array.buffer.slice(array.byteOffset, array.byteLength + array.byteOffset)
  }
}