142 lines
3.8 KiB
JavaScript
142 lines
3.8 KiB
JavaScript
import 'cropperjs' // This adds all of the cropperjs's components into DOM
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import { library } from '@fortawesome/fontawesome-svg-core'
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import {
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faCircleNotch
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} from '@fortawesome/free-solid-svg-icons'
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library.add(
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faCircleNotch
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)
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const ImageCropper = {
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props: {
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trigger: {
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type: [String, window.Element],
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required: true
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},
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submitHandler: {
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type: Function,
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required: true
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},
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mimes: {
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type: String,
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default: 'image/png, image/gif, image/jpeg, image/bmp, image/x-icon'
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},
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saveButtonLabel: {
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type: String
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},
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saveWithoutCroppingButtonlabel: {
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type: String
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},
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cancelButtonLabel: {
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type: String
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}
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},
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data () {
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return {
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dataUrl: undefined,
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filename: undefined,
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submitting: false
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}
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},
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computed: {
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saveText () {
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return this.saveButtonLabel || this.$t('image_cropper.save')
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},
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saveWithoutCroppingText () {
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return this.saveWithoutCroppingButtonlabel || this.$t('image_cropper.save_without_cropping')
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},
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cancelText () {
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return this.cancelButtonLabel || this.$t('image_cropper.cancel')
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}
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},
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methods: {
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destroy () {
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this.$refs.input.value = ''
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this.dataUrl = undefined
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this.$emit('close')
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},
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submit (cropping = true) {
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this.submitting = true
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let cropperPromise
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if (cropping) {
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cropperPromise = this.$refs.cropperSelection.$toCanvas()
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} else {
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cropperPromise = Promise.resolve()
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}
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cropperPromise.then(canvas => {
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this.submitHandler(canvas, this.file)
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.then(() => this.destroy())
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.finally(() => {
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this.submitting = false
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})
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})
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},
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pickImage () {
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this.$refs.input.click()
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},
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getTriggerDOM () {
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return typeof this.trigger === 'object' ? this.trigger : document.querySelector(this.trigger)
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},
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readFile () {
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const fileInput = this.$refs.input
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if (fileInput.files != null && fileInput.files[0] != null) {
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this.file = fileInput.files[0]
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const reader = new window.FileReader()
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reader.onload = (e) => {
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this.dataUrl = e.target.result
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this.$emit('open')
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}
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reader.readAsDataURL(this.file)
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this.$emit('changed', this.file, reader)
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}
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},
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inSelection(selection, maxSelection) {
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return (
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selection.x >= maxSelection.x
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&& selection.y >= maxSelection.y
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&& (selection.x + selection.width) <= (maxSelection.x + maxSelection.width)
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&& (selection.y + selection.height) <= (maxSelection.y + maxSelection.height)
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)
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},
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onCropperSelectionChange(event) {
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const cropperCanvas = this.$refs.cropperCanvas
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const cropperCanvasRect = cropperCanvas.getBoundingClientRect()
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const selection = event.detail
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const maxSelection = {
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x: 0,
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y: 0,
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width: cropperCanvasRect.width,
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height: cropperCanvasRect.height,
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}
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if (!this.inSelection(selection, maxSelection)) {
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event.preventDefault();
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}
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}
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},
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mounted () {
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// listen for click event on trigger
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const trigger = this.getTriggerDOM()
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if (!trigger) {
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this.$emit('error', 'No image make trigger found.', 'user')
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} else {
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trigger.addEventListener('click', this.pickImage)
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}
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// listen for input file changes
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const fileInput = this.$refs.input
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fileInput.addEventListener('change', this.readFile)
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},
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beforeUnmount: function () {
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// remove the event listeners
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const trigger = this.getTriggerDOM()
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if (trigger) {
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trigger.removeEventListener('click', this.pickImage)
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}
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const fileInput = this.$refs.input
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fileInput.removeEventListener('change', this.readFile)
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}
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}
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export default ImageCropper
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