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114 lines
3.0 KiB
JavaScript
114 lines
3.0 KiB
JavaScript
/* eslint-disable camelcase */
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/* global DataTransfer */
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export function alpine_webcam_builder (
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default_picture,
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delete_url,
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can_delete_picture
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) {
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return () => ({
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can_edit_picture: false,
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loading: false,
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is_camera_enabled: false,
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is_camera_error: false,
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picture: null,
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video: null,
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picture_form: null,
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init () {
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this.video = this.$refs.video
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this.picture_form = this.$refs.form.getElementsByTagName('input')
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if (this.picture_form.length > 0) {
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this.picture_form = this.picture_form[0]
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this.can_edit_picture = true
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// Link the displayed element to the form input
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this.picture_form.onchange = (event) => {
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const files = event.srcElement.files
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if (files.length > 0) {
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this.picture = (window.URL || window.webkitURL).createObjectURL(
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event.srcElement.files[0]
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)
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} else {
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this.picture = null
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}
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}
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}
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},
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get_picture () {
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return this.picture || default_picture
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},
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delete_picture () {
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// Only remove currently displayed picture
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if (this.picture) {
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const list = new DataTransfer()
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this.picture_form.files = list.files
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this.picture_form.dispatchEvent(new Event('change'))
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return
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}
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if (!can_delete_picture) {
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return
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}
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// Remove user picture if correct rights are available
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window.open(delete_url, '_self')
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},
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enable_camera () {
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this.picture = null
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this.loading = true
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this.is_camera_error = false
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navigator.mediaDevices
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.getUserMedia({ video: true, audio: false })
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.then((stream) => {
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this.loading = false
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this.is_camera_enabled = true
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this.video.srcObject = stream
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this.video.play()
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})
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.catch((err) => {
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this.is_camera_error = true
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this.loading = false
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throw (err)
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})
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},
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take_picture () {
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const canvas = document.createElement('canvas')
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const context = canvas.getContext('2d')
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/* Create the image */
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const settings = this.video.srcObject.getTracks()[0].getSettings()
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canvas.width = settings.width
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canvas.height = settings.height
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context.drawImage(this.video, 0, 0, canvas.width, canvas.height)
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/* Stop camera */
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this.video.pause()
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this.video.srcObject.getTracks().forEach((track) => {
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if (track.readyState === 'live') {
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track.stop()
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}
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})
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canvas.toBlob((blob) => {
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const filename = interpolate(gettext('captured.%s'), ['webp'])
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const file = new File([blob], filename, {
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type: 'image/webp'
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})
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const list = new DataTransfer()
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list.items.add(file)
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this.picture_form.files = list.files
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// No change event is triggered, we trigger it manually #}
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this.picture_form.dispatchEvent(new Event('change'))
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}, 'image/webp')
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canvas.remove()
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this.is_camera_enabled = false
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}
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})
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}
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