Files
online-energieausweis/src/lib/pdf/elements/xml2pdf.ts
2025-04-01 09:35:15 -03:00

117 lines
4.5 KiB
TypeScript

import * as txml from "#lib/helpers/txml.js"
import { PDFDocument, PDFFont, rgb, StandardFonts } from "pdf-lib"
import { Checkbox, Flex, Text } from "./index.js"
import { Layout } from "./Layout.js"
import { Image } from "./Image.js"
import { PDFElement } from "./PDFElement.js"
export function xml2pdf(xml: string, fonts: Record<string, PDFFont> & { "default": PDFFont }) {
const tree = txml.parse(xml)
const iterateChildren = (children: ReturnType<typeof txml.parse>, parent: PDFElement) => {
for (const child of children) {
if (typeof child === "string") {
// Simple text
parent.addChild(new Text(child, { font: fonts["default"] }))
} else if (child.tagName === "flex") {
const flexbox = new Flex({
height: parseFloat(child.attributes.height) || "auto",
width: parseFloat(child.attributes.width) || "auto",
align: child.attributes.align,
direction: child.attributes.direction,
gap: parseFloat(child.attributes.gap) || 0,
justify: child.attributes.justify,
margin: {
bottom: parseFloat(child.attributes.marginBottom) || 0,
left: parseFloat(child.attributes.marginLeft) || 0,
right: parseFloat(child.attributes.marginRight) || 0,
top: parseFloat(child.attributes.marginTop) || 0,
},
padding: {
bottom: parseFloat(child.attributes.paddingBottom) || 0,
left: parseFloat(child.attributes.paddingLeft) || 0,
right: parseFloat(child.attributes.paddingRight) || 0,
top: parseFloat(child.attributes.paddingTop) || 0,
}
})
iterateChildren(child.children, flexbox)
parent.addChild(flexbox)
} else if (child.tagName === "text") {
let color = rgb(0,0,0)
if (child.attributes.hasOwnProperty("color")) {
const colorValue = child.attributes.color.split(",")
if (colorValue.length !== 3) {
throw new Error("Invalid color, please provide 'r,g,b' as a value.")
}
color = rgb(...colorValue.map((x) => parseInt(x) / 255) as [number, number, number]);
}
const text = new Text(child.children[0] as string || "", { font: child.attributes.hasOwnProperty("font") ? fonts[child.attributes["font"]] : fonts["default"], lineHeight: parseFloat(child.attributes.lineHeight), fontSize: parseFloat(child.attributes.size) || 10, color, margin: {
bottom: parseFloat(child.attributes.marginBottom) || 0,
left: parseFloat(child.attributes.marginLeft) || 0,
right: parseFloat(child.attributes.marginRight) || 0,
top: parseFloat(child.attributes.marginTop) || 0,
},
padding: {
bottom: parseFloat(child.attributes.paddingBottom) || 0,
left: parseFloat(child.attributes.paddingLeft) || 0,
right: parseFloat(child.attributes.paddingRight) || 0,
top: parseFloat(child.attributes.paddingTop) || 0,
} })
parent.addChild(text)
} else if (child.tagName === "checkbox") {
if (typeof child.attributes.width === "undefined" || typeof child.attributes.height === "undefined") {
throw new Error("Missing height or width property in Checkbox creation.")
}
const checkbox = new Checkbox(parseFloat(child.attributes.width), parseFloat(child.attributes.height), (child.attributes.hasOwnProperty("checked") && child.attributes.checked !== "false") || false)
parent.addChild(checkbox);
} else if (child.tagName === "layout") {
const layout = new Layout([], {
margin: {
bottom: parseFloat(child.attributes.marginBottom) || 0,
left: parseFloat(child.attributes.marginLeft) || 0,
right: parseFloat(child.attributes.marginRight) || 0,
top: parseFloat(child.attributes.marginTop) || 0,
},
padding: {
bottom: parseFloat(child.attributes.paddingBottom) || 0,
left: parseFloat(child.attributes.paddingLeft) || 0,
right: parseFloat(child.attributes.paddingRight) || 0,
top: parseFloat(child.attributes.paddingTop) || 0,
}
})
iterateChildren(child.children, layout)
parent.addChild(layout)
} else if (child.tagName === "img") {
const image = new Image({
width: parseFloat(child.attributes.width),
height: parseFloat(child.attributes.height),
margin: {
bottom: parseFloat(child.attributes.marginBottom) || 0,
left: parseFloat(child.attributes.marginLeft) || 0,
right: parseFloat(child.attributes.marginRight) || 0,
top: parseFloat(child.attributes.marginTop) || 0,
},
src: child.attributes.src,
data: child.attributes.data
})
parent.addChild(image)
}
}
}
const layout = new Layout([]);
iterateChildren(tree, layout)
return layout
}