mirror of https://github.com/docusealco/docuseal
parent
dc6e4313a1
commit
9e4da5948b
@ -0,0 +1,73 @@
|
||||
export function convertImage (sourceFile, targetType, quality) {
|
||||
return new Promise((resolve, reject) => {
|
||||
const reader = new FileReader()
|
||||
|
||||
reader.onload = function (event) {
|
||||
const img = new Image()
|
||||
|
||||
img.onload = function () {
|
||||
const canvas = document.createElement('canvas')
|
||||
const ctx = canvas.getContext('2d')
|
||||
|
||||
canvas.width = img.width
|
||||
canvas.height = img.height
|
||||
ctx.drawImage(img, 0, 0)
|
||||
canvas.toBlob(function (blob) {
|
||||
const ext = targetType === 'image/jpeg' ? '.jpg' : '.png'
|
||||
const newFile = new File([blob], sourceFile.name.replace(/\.\w+$/, ext), { type: targetType })
|
||||
resolve(newFile)
|
||||
}, targetType, quality)
|
||||
}
|
||||
|
||||
img.onerror = () => reject(new Error(`browser cannot decode ${sourceFile.type || sourceFile.name}`))
|
||||
|
||||
img.src = event.target.result
|
||||
}
|
||||
reader.onerror = reject
|
||||
reader.readAsDataURL(sourceFile)
|
||||
})
|
||||
}
|
||||
|
||||
export async function convertImagesInInput (input) {
|
||||
if (!input.files || input.files.length === 0) return
|
||||
|
||||
const dt = new DataTransfer()
|
||||
let didConvert = false
|
||||
|
||||
for (const file of Array.from(input.files)) {
|
||||
let converted = file
|
||||
|
||||
try {
|
||||
if (['image/bmp', 'image/vnd.microsoft.icon', 'image/svg+xml'].includes(file.type)) {
|
||||
converted = await convertImage(file, 'image/png')
|
||||
didConvert = true
|
||||
} else if (['image/heic', 'image/heif', 'image/heic-sequence', 'image/heif-sequence', 'image/avif', 'image/avif-sequence'].includes(file.type)) {
|
||||
converted = await convertImage(file, 'image/jpeg', 0.9)
|
||||
didConvert = true
|
||||
}
|
||||
} catch (e) {
|
||||
alert(e.message)
|
||||
}
|
||||
|
||||
dt.items.add(converted)
|
||||
}
|
||||
|
||||
if (didConvert) {
|
||||
input.files = dt.files
|
||||
}
|
||||
}
|
||||
|
||||
export default class extends HTMLElement {
|
||||
connectedCallback () {
|
||||
const input = this.querySelector('input[type="file"]')
|
||||
const form = input.form
|
||||
|
||||
input.addEventListener('change', async () => {
|
||||
await convertImagesInInput(input)
|
||||
|
||||
form.querySelector('[type="submit"]')?.setAttribute('disabled', true)
|
||||
|
||||
form.requestSubmit()
|
||||
})
|
||||
}
|
||||
}
|
||||
Loading…
Reference in new issue