306 lines
10 KiB
JavaScript
306 lines
10 KiB
JavaScript
class Annotation {
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static async createAnnotations(document, instance) {
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const signatures = []
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for (var element of document.elements) {
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const [annotation, formField, annotation_date, formFieldDate, annotation_city, formFieldCity, annotation_date_label, formFieldDateLabel, annotation_city_label, formFieldCityLabel] = await Annotation.createSignature(element)
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signatures.push(annotation)
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signatures.push(formField)
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signatures.push(annotation_date)
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signatures.push(formFieldDate)
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signatures.push(annotation_city)
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signatures.push(formFieldCity)
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signatures.push(annotation_date_label)
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signatures.push(formFieldDateLabel)
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signatures.push(annotation_city_label)
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signatures.push(formFieldCityLabel)
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}
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await instance.create(signatures)
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}
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static async createSignature(element) {
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const annotParams = await getAnnotationParams(element.left, element.top);
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const page = element.page - 1
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//signatures
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const id = PSPDFKit.generateInstantId()
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const annotation = new PSPDFKit.Annotations.WidgetAnnotation({
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id: id,
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pageIndex: page,
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formFieldName: id,
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backgroundColor: PSPDFKit.Color.YELLOW,
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blendMode: 'multiply',
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boundingBox: new PSPDFKit.Geometry.Rect(annotParams.signature),
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})
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const formField = new PSPDFKit.FormFields.SignatureFormField({
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name: id,
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annotationIds: PSPDFKit.Immutable.List([annotation.id]),
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})
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/**
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* Date, post code and place text form part
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*/
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const date_place_top_shift = 9.5;
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//city
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const id_city = PSPDFKit.generateInstantId()
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const annotation_city = new PSPDFKit.Annotations.WidgetAnnotation({
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id: id_city,
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pageIndex: page,
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formFieldName: id_city,
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backgroundColor: PSPDFKit.Color.DarkBlue,
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blendMode: 'multiply',
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boundingBox: new PSPDFKit.Geometry.Rect(annotParams.city),
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fontSize: 8
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})
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const formFieldCity = new PSPDFKit.FormFields.TextFormField({
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name: id_city,
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annotationIds: PSPDFKit.Immutable.List([annotation_city.id]),
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value: "",
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readOnly: false
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})
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//date
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const id_date = PSPDFKit.generateInstantId()
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const annotation_date = new PSPDFKit.Annotations.WidgetAnnotation({
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id: id_date,
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pageIndex: page,
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formFieldName: id_date,
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backgroundColor: PSPDFKit.Color.DarkBlue,
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blendMode: 'multiply',
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boundingBox: new PSPDFKit.Geometry.Rect(annotParams.date),
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fontSize: 8,
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backgroundColor: PSPDFKit.Color.TRANSPARENT,
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fontColor: PSPDFKit.Color.Black,
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isBold: true,
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required: true
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})
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const formFieldDate = new PSPDFKit.FormFields.TextFormField({
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name: id_date,
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annotationIds: PSPDFKit.Immutable.List([annotation_date.id]),
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value: detailedCurrentDate(),
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readOnly: true
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})
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this.markFieldAsRequired(formFieldCity);
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this.markFieldAsCity(formFieldCity);
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/**
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* Date, post code and place label part
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*/
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const label_top_shift = -15
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//date label
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const id_date_label = PSPDFKit.generateInstantId()
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const annotation_date_label = new PSPDFKit.Annotations.WidgetAnnotation({
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id: id_date_label,
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pageIndex: page,
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formFieldName: id_date_label,
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blendMode: 'multiply',
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boundingBox: new PSPDFKit.Geometry.Rect(annotParams.datelabel),
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fontSize: 8,
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backgroundColor: PSPDFKit.Color.TRANSPARENT,
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fontColor: PSPDFKit.Color.Black,
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isBold: true,
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required: true
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})
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const formFieldDateLabel = new PSPDFKit.FormFields.TextFormField({
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name: id_date_label,
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annotationIds: PSPDFKit.Immutable.List([annotation_date_label.id]),
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value: "Date",
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readOnly: true
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})
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//city label
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const id_city_label = PSPDFKit.generateInstantId()
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const annotation_city_label = new PSPDFKit.Annotations.WidgetAnnotation({
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id: id_city_label,
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pageIndex: page,
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formFieldName: id_city_label,
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blendMode: 'multiply',
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boundingBox: new PSPDFKit.Geometry.Rect(annotParams.citylabel),
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fontSize: 8,
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backgroundColor: PSPDFKit.Color.TRANSPARENT,
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fontColor: PSPDFKit.Color.Black,
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isBold: true,
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})
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const formFieldCityLabel = new PSPDFKit.FormFields.TextFormField({
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name: id_city_label,
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annotationIds: PSPDFKit.Immutable.List([annotation_city_label.id]),
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value: "Ort",
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readOnly: true
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})
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return [annotation, formField, annotation_date, formFieldDate, annotation_city, formFieldCity, annotation_date_label, formFieldDateLabel, annotation_city_label, formFieldCityLabel]
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}
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static createTextBox(element) {
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const id = PSPDFKit.generateInstantId()
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const width = Annotation.inchToPoint(element.width)
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const height = Annotation.inchToPoint(element.height)
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const top = Annotation.inchToPoint(element.top) - height / 2
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const left = Annotation.inchToPoint(element.left) - width / 2
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const page = element.page - 1
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//shift
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top += height + 10
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const annotation = new PSPDFKit.Annotations.WidgetAnnotation({
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id: id,
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pageIndex: page,
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formFieldName: id,
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backgroundColor: PSPDFKit.Color.YELLOW,
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blendMode: 'multiply',
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boundingBox: new PSPDFKit.Geometry.Rect({
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width,
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height,
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top,
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left,
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}),
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})
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const formField = new PSPDFKit.FormFields.SignatureFormField({
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name: id,
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annotationIds: PSPDFKit.Immutable.List([annotation.id]),
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})
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return [annotation, formField]
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}
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static async getAnnotations(instance) {
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const array = await Promise.all(
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Array.from({ length: instance.totalPageCount }).map((_, pageIndex) =>
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instance.getAnnotations(pageIndex)
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)
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)
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return array.flatMap((annotations) =>
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annotations.reduce((acc, annotation) => acc.concat(annotation), [])
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)
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}
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static async deleteAnnotations(instance) {
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const allAnnotations = await Annotation.getAnnotations(instance)
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const pageAnnotations = allAnnotations.filter(Annotation.isSignature)
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//deleting all Annotations
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return await instance.delete(pageAnnotations)
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}
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static async validateAnnotations(instance) {
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const allAnnotations = await Annotation.getAnnotations(instance)
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const pageAnnotations = allAnnotations
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.map((annotation) => {
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return annotation
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})
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return true
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}
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static isSignature(annotation) {
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return !!annotation.isSignature || annotation.description == 'FRAME'
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}
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static createImageAnnotation(boundingBox, pageIndex, imageAttachmentId) {
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const frameAnnotation = new PSPDFKit.Annotations.ImageAnnotation({
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pageIndex: pageIndex,
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isSignature: false,
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readOnly: true,
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locked: true,
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lockedContents: true,
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contentType: 'image/png',
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imageAttachmentId,
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description: 'FRAME',
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boundingBox: boundingBox,
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})
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return frameAnnotation
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}
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static async createAnnotationFrameBlob(receiverName, receiverSignature, timestamp, width, height) {
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Comp.SignatureProgress.SignedCount += 1;
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const canvas = document.createElement('canvas')
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const scale = 4
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const fontSize = 10
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canvas.width = width * scale
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canvas.height = height * scale
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const ctx = canvas.getContext('2d')
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// This supposedly makes the lines and text less blurry
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// See: https://stackoverflow.com/questions/8696631/canvas-drawings-like-lines-are-blurry
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ctx.translate(0.5, 0.5)
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// This also should make the lines and text less blurry
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ctx.textRendering = "geometricPrecision"
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const date = timestamp
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const dateString = date.toLocaleString('de-DE')
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const signatureLength = 100 * scale
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const signatureString = receiverSignature.substring(0, 15) + "…"
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ctx.beginPath()
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ctx.moveTo(30 * scale, 10 * scale)
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ctx.lineTo(signatureLength, 10 * scale)
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ctx.moveTo(30 * scale, 10 * scale)
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ctx.arcTo(10 * scale, 10 * scale, 10 * scale, 30 * scale, 20 * scale)
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ctx.moveTo(10 * scale, 30 * scale)
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ctx.arcTo(10 * scale, 50 * scale, 30 * scale, 50 * scale, 20 * scale)
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ctx.moveTo(30 * scale, 50 * scale)
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ctx.lineTo(signatureLength, 50 * scale)
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ctx.strokeStyle = 'darkblue'
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ctx.stroke()
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ctx.fillStyle = 'black'
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ctx.font = `${fontSize * scale}px sans-serif`
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ctx.fillText('Signed by', 15 * scale, 10 * scale)
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ctx.fillText(receiverName, 15 * scale, 60 * scale)
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ctx.fillText(signatureString, 15 * scale, 70 * scale)
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return new Promise((resolve) => {
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canvas.toBlob((blob) => {
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const url = URL.createObjectURL(blob)
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resolve(url)
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})
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})
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}
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static inchToPoint(inch) {
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return inch * 72
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}
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//required
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static #requiredFieldNames = new Array()
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static markFieldAsRequired(formField) {
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this.#requiredFieldNames.push(formField.name)
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}
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static isFieldRequired(formField) {
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return this.#requiredFieldNames.includes(formField.name)
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}
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//city
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static #cityFieldNames = new Array()
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static markFieldAsCity(formField) {
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this.#cityFieldNames.push(formField.name)
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}
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static isCityField(formField) {
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return this.#cityFieldNames.includes(formField.name)
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}
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} |