@pdfme/pdf-lib
Version:
Create and modify PDF files with JavaScript
127 lines • 4.2 kB
JavaScript
"use strict";
var __importDefault = (this && this.__importDefault) || function (mod) {
return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
const PDFNumber_1 = __importDefault(require("./PDFNumber"));
const PDFObject_1 = __importDefault(require("./PDFObject"));
const CharCodes_1 = __importDefault(require("../syntax/CharCodes"));
const errors_1 = require("../errors");
class PDFArray extends PDFObject_1.default {
constructor(context) {
super();
Object.defineProperty(this, "array", {
enumerable: true,
configurable: true,
writable: true,
value: void 0
});
Object.defineProperty(this, "context", {
enumerable: true,
configurable: true,
writable: true,
value: void 0
});
this.array = [];
this.context = context;
}
size() {
return this.array.length;
}
push(object) {
this.array.push(object);
}
insert(index, object) {
this.array.splice(index, 0, object);
}
indexOf(object) {
const index = this.array.indexOf(object);
return index === -1 ? undefined : index;
}
remove(index) {
this.array.splice(index, 1);
}
set(idx, object) {
this.array[idx] = object;
}
get(index) {
return this.array[index];
}
lookupMaybe(index, ...types) {
return this.context.lookupMaybe(this.get(index),
// @ts-ignore
...types);
}
lookup(index, ...types) {
return this.context.lookup(this.get(index),
// @ts-ignore
...types);
}
asRectangle() {
if (this.size() !== 4)
throw new errors_1.PDFArrayIsNotRectangleError(this.size());
const lowerLeftX = this.lookup(0, PDFNumber_1.default).asNumber();
const lowerLeftY = this.lookup(1, PDFNumber_1.default).asNumber();
const upperRightX = this.lookup(2, PDFNumber_1.default).asNumber();
const upperRightY = this.lookup(3, PDFNumber_1.default).asNumber();
const x = lowerLeftX;
const y = lowerLeftY;
const width = upperRightX - lowerLeftX;
const height = upperRightY - lowerLeftY;
return { x, y, width, height };
}
asArray() {
return this.array.slice();
}
clone(context) {
const clone = PDFArray.withContext(context || this.context);
for (let idx = 0, len = this.size(); idx < len; idx++) {
clone.push(this.array[idx]);
}
return clone;
}
toString() {
let arrayString = '[ ';
for (let idx = 0, len = this.size(); idx < len; idx++) {
arrayString += this.get(idx).toString();
arrayString += ' ';
}
arrayString += ']';
return arrayString;
}
sizeInBytes() {
let size = 3;
for (let idx = 0, len = this.size(); idx < len; idx++) {
size += this.get(idx).sizeInBytes() + 1;
}
return size;
}
copyBytesInto(buffer, offset) {
const initialOffset = offset;
buffer[offset++] = CharCodes_1.default.LeftSquareBracket;
buffer[offset++] = CharCodes_1.default.Space;
for (let idx = 0, len = this.size(); idx < len; idx++) {
offset += this.get(idx).copyBytesInto(buffer, offset);
buffer[offset++] = CharCodes_1.default.Space;
}
buffer[offset++] = CharCodes_1.default.RightSquareBracket;
return offset - initialOffset;
}
scalePDFNumbers(x, y) {
for (let idx = 0, len = this.size(); idx < len; idx++) {
const el = this.lookup(idx);
if (el instanceof PDFNumber_1.default) {
const factor = idx % 2 === 0 ? x : y;
this.set(idx, PDFNumber_1.default.of(el.asNumber() * factor));
}
}
}
}
Object.defineProperty(PDFArray, "withContext", {
enumerable: true,
configurable: true,
writable: true,
value: (context) => new PDFArray(context)
});
exports.default = PDFArray;
//# sourceMappingURL=PDFArray.js.map