forked from floraachy/ImageKnife
55 lines
1.7 KiB
Plaintext
55 lines
1.7 KiB
Plaintext
/*
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* Copyright (C) 2021 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{IParseImage} from '../interface/IParseImage'
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import image from '@ohos.multimedia.image';
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export class ParseImageUtil implements IParseImage {
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parseImage(imageinfo: ArrayBuffer, onCompleteFunction, onErrorFunction) {
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this.parseImageThumbnail(1, imageinfo, onCompleteFunction, onErrorFunction)
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}
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// scale(0,1)
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parseImageThumbnail(scale: number, imageinfo: ArrayBuffer, onCompleteFunction, onErrorFunction) {
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let imageSource = image.createImageSource(imageinfo as any); // 步骤一：文件转为pixelMap 然后变换 给Image组件
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imageSource.getImageInfo((err, value) => {
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if (err) {
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onErrorFunction(err);
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return;
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}
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let hValue = Math.round(value.size.height * scale);
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let wValue = Math.round(value.size.width * scale);
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let defaultSize = {
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'height': hValue,
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'width': wValue
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};
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let opts = {
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editable: true,
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size: defaultSize
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};
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imageSource.createPixelMap(opts, (err, pixelmap) => {
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if (err) {
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onErrorFunction(err);
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} else {
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onCompleteFunction(pixelmap);
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}
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})
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})
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}
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} |