66 lines
2.7 KiB
Plaintext
66 lines
2.7 KiB
Plaintext
/*
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* Copyright (C) 2024 Huawei Device Co., Ltd.
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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import { IEngineKey, ImageKnifeOption, PixelMapTransformation,SparkMD5 ,ImageKnifeRequestSource,
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DownsampleStrategy} from '@ohos/libraryimageknife';
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//全局自定义key demo
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@Sendable
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export class CustomEngineKeyImpl implements IEngineKey {
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// 生成内存缓存key
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generateMemoryKey(loadSrc: string | PixelMap | Resource, requestSource: ImageKnifeRequestSource,
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imageKnifeOption: ImageKnifeOption,isAnimator?: boolean, width?: number, height?: number): string {
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let key = ""
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if(imageKnifeOption.signature == "aaa" && typeof loadSrc == "string") {
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let num = loadSrc.indexOf("?")
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let src = loadSrc.substring(0,num)
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key = "loadSrc=" + src
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} else {
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key = (isAnimator == true ? "Animator=" : "loadSrc==") + (typeof loadSrc == "string" ? loadSrc : JSON.stringify(loadSrc)) + ";"
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}
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if (requestSource === ImageKnifeRequestSource.SRC) {
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if (imageKnifeOption.signature !== undefined && imageKnifeOption.signature !== "") {
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key += "signature=" + imageKnifeOption.signature + ";"
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}
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if (imageKnifeOption.transformation) {
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key += "transformation=" + this.getTransformation(imageKnifeOption.transformation) + ";"
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}
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if ((imageKnifeOption.downsampleOf !== DownsampleStrategy.NONE && imageKnifeOption.downsampleOf !== undefined)) {
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key += "downsampleOf" + imageKnifeOption.downsampleOf + "width=" + width + "height=" + height
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}
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}
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return key
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}
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// 生成文件缓存key
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generateFileKey(loadSrc: string | PixelMap | Resource, signature?: string,isAnimator?: boolean): string {
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let src = ""
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if(signature == "aaa" && typeof loadSrc == "string") {
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let num = loadSrc.indexOf("?")
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let key = loadSrc.substring(0,num)
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src = "loadSrc=" + key
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} else {
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src = (isAnimator == true ? "Animator=" : "loadSrc==") + (typeof loadSrc == "string" ? loadSrc : JSON.stringify(loadSrc)) + ";"
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}
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if (signature !== undefined && signature !== "") {
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src += "signature=" + signature + ";"
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}
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return SparkMD5.hashBinary(src)
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}
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private getTransformation(transformation: PixelMapTransformation): string {
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return transformation.getName()
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}
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}
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