react-native-hecom-common/src/util/AliyunUtil.js

Public UI components and data structures.

import { PixelRatio } from 'react-native';

export const RESIZE_MODE = {LFIT: 'lfit', MFIT: 'mfit', FILL: 'fill', PAD: 'pad', FIXED: 'fixed'};

/**
 * 获取阿里云缩略图
 * @param url 原始url
 * @param height 缩略图高度，布局尺寸
 * @param width 缩略图宽度，布局尺寸
 * @param scaleType 压缩方式
 */
export function getThumbnail(url, height, width = height, scaleType = RESIZE_MODE.MFIT) {
    if (typeof url === 'undefined') {
        return undefined;
    }
    if (url.indexOf('?x-oss-process=image/resize') !== -1) {
        return url;
    }
    if (typeof height === 'undefined' && typeof width === 'undefined') {
        width = global.screenWidth();
        height = global.screenHeight();
    }
    if (typeof width === 'undefined') {
        width = height;
    }
    const pixelHeight = PixelRatio.getPixelSizeForLayoutSize(height);
    const pixelWidth = PixelRatio.getPixelSizeForLayoutSize(width);
    return `${url}?x-oss-process=image/resize,m_${scaleType},h_${pixelHeight},w_${pixelWidth}`;
}

let defSize = 32;

export function setDefSizeAvatarUrl(size) {
    defSize = size;
}

export function getDefSizeAvatarUrl(url) {
    return getThumbnail(url, defSize, defSize);
}