96 lines
2.2 KiB
JavaScript
96 lines
2.2 KiB
JavaScript
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import { openImageCompressModal } from '@/utils/image-compress-modal.js';
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export const IMAGE_COMPRESS_THRESHOLD = 1 * 1024 * 1024;
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export function formatFileSize(bytes) {
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if (bytes === 0) return '0 B';
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const k = 1024;
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const sizes = ['B', 'KB', 'MB', 'GB'];
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const i = Math.floor(Math.log(bytes) / Math.log(k));
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const value = bytes / k ** i;
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return `${Number.parseFloat(value.toFixed(2))} ${sizes[i]}`;
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}
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/** 压缩节省比例文案，如「（约节省 42%）」 */
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export function formatSavingsPercent(originalBytes, compressedBytes) {
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if (originalBytes <= 0 || compressedBytes >= originalBytes) {
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return '';
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}
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const percent = Math.round(
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((originalBytes - compressedBytes) / originalBytes) * 100,
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);
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return percent > 0 ? `（约节省 ${percent}%）` : '';
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}
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function getFileInfo(filePath) {
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return new Promise((resolve, reject) => {
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uni.getFileInfo({
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filePath,
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success: resolve,
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fail: reject,
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});
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});
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}
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export function compressImagePath(src, quality) {
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return new Promise((resolve, reject) => {
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uni.compressImage({
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src,
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quality,
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success: async (res) => {
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try {
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const info = await getFileInfo(res.tempFilePath);
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resolve({
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path: res.tempFilePath,
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size: info.size,
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});
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} catch (error) {
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reject(error);
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}
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},
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fail: reject,
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});
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});
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}
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export async function tryCompressImage(
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src,
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qualities = [80, 60, 40],
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onProgress,
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) {
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let result = null;
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for (const quality of qualities) {
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onProgress && onProgress(quality);
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result = await compressImagePath(src, quality);
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if (result.size <= IMAGE_COMPRESS_THRESHOLD) {
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break;
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}
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}
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return result;
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}
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export function isGifPath(path) {
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return /\.gif$/i.test(path || '');
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}
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export async function prepareImagePath({ path, size }) {
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if (size <= IMAGE_COMPRESS_THRESHOLD) {
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return {
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path,
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size,
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usedCompress: false,
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};
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}
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const result = await openImageCompressModal({ path, size });
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if (!result) {
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return null;
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}
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return {
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path: result.path,
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size: result.size,
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usedCompress: !!result.usedCompress,
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};
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}
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