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