1427 lines
40 KiB
JavaScript
1427 lines
40 KiB
JavaScript
/* Copyright 2012 Mozilla Foundation
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/* eslint no-var: error */
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import {
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AnnotationBorderStyleType,
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AnnotationFieldFlag,
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AnnotationFlag,
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AnnotationReplyType,
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AnnotationType,
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assert,
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isString,
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OPS,
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stringToBytes,
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stringToPDFString,
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Util,
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warn,
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} from "../shared/util.js";
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import { Catalog, FileSpec, ObjectLoader } from "./obj.js";
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import { Dict, isDict, isName, isRef, isStream } from "./primitives.js";
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import { ColorSpace } from "./colorspace.js";
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import { getInheritableProperty } from "./core_utils.js";
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import { OperatorList } from "./operator_list.js";
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import { Stream } from "./stream.js";
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class AnnotationFactory {
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/**
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* Create an `Annotation` object of the correct type for the given reference
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* to an annotation dictionary. This yields a promise that is resolved when
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* the `Annotation` object is constructed.
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*
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* @param {XRef} xref
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* @param {Object} ref
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* @param {PDFManager} pdfManager
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* @param {Object} idFactory
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* @returns {Promise} A promise that is resolved with an {Annotation}
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* instance.
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*/
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static create(xref, ref, pdfManager, idFactory) {
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return pdfManager.ensureDoc("acroForm").then(acroForm => {
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return pdfManager.ensure(this, "_create", [
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xref,
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ref,
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pdfManager,
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idFactory,
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acroForm,
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]);
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});
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}
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/**
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* @private
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*/
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static _create(xref, ref, pdfManager, idFactory, acroForm) {
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const dict = xref.fetchIfRef(ref);
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if (!isDict(dict)) {
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return undefined;
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}
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const id = isRef(ref) ? ref.toString() : `annot_${idFactory.createObjId()}`;
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// Determine the annotation's subtype.
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let subtype = dict.get("Subtype");
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subtype = isName(subtype) ? subtype.name : null;
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// Return the right annotation object based on the subtype and field type.
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const parameters = {
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xref,
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dict,
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subtype,
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id,
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pdfManager,
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acroForm: acroForm instanceof Dict ? acroForm : Dict.empty,
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};
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switch (subtype) {
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case "Link":
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return new LinkAnnotation(parameters);
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case "Text":
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return new TextAnnotation(parameters);
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case "Widget":
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let fieldType = getInheritableProperty({ dict, key: "FT" });
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fieldType = isName(fieldType) ? fieldType.name : null;
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switch (fieldType) {
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case "Tx":
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return new TextWidgetAnnotation(parameters);
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case "Btn":
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return new ButtonWidgetAnnotation(parameters);
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case "Ch":
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return new ChoiceWidgetAnnotation(parameters);
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}
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warn(
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'Unimplemented widget field type "' +
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fieldType +
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'", ' +
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"falling back to base field type."
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);
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return new WidgetAnnotation(parameters);
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case "Popup":
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return new PopupAnnotation(parameters);
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case "FreeText":
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return new FreeTextAnnotation(parameters);
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case "Line":
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return new LineAnnotation(parameters);
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case "Square":
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return new SquareAnnotation(parameters);
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case "Circle":
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return new CircleAnnotation(parameters);
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case "PolyLine":
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return new PolylineAnnotation(parameters);
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case "Polygon":
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return new PolygonAnnotation(parameters);
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case "Caret":
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return new CaretAnnotation(parameters);
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case "Ink":
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return new InkAnnotation(parameters);
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case "Highlight":
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return new HighlightAnnotation(parameters);
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case "Underline":
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return new UnderlineAnnotation(parameters);
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case "Squiggly":
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return new SquigglyAnnotation(parameters);
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case "StrikeOut":
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return new StrikeOutAnnotation(parameters);
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case "Stamp":
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return new StampAnnotation(parameters);
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case "FileAttachment":
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return new FileAttachmentAnnotation(parameters);
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default:
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if (!subtype) {
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warn("Annotation is missing the required /Subtype.");
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} else {
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warn(
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'Unimplemented annotation type "' +
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subtype +
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'", ' +
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"falling back to base annotation."
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);
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}
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return new Annotation(parameters);
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}
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}
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}
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function getQuadPoints(dict, rect) {
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if (!dict.has("QuadPoints")) {
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return null;
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}
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// The region is described as a number of quadrilaterals.
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// Each quadrilateral must consist of eight coordinates.
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const quadPoints = dict.getArray("QuadPoints");
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if (!Array.isArray(quadPoints) || quadPoints.length % 8 > 0) {
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return null;
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}
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const quadPointsLists = [];
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for (let i = 0, ii = quadPoints.length / 8; i < ii; i++) {
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// Each series of eight numbers represents the coordinates for one
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// quadrilateral in the order [x1, y1, x2, y2, x3, y3, x4, y4].
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// Convert this to an array of objects with x and y coordinates.
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quadPointsLists.push([]);
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for (let j = i * 8, jj = i * 8 + 8; j < jj; j += 2) {
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const x = quadPoints[j];
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const y = quadPoints[j + 1];
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// The quadpoints should be ignored if any coordinate in the array
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// lies outside the region specified by the rectangle.
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if (x < rect[0] || x > rect[2] || y < rect[1] || y > rect[3]) {
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return null;
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}
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quadPointsLists[i].push({ x, y });
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}
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}
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return quadPointsLists;
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}
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function getTransformMatrix(rect, bbox, matrix) {
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// 12.5.5: Algorithm: Appearance streams
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const [minX, minY, maxX, maxY] = Util.getAxialAlignedBoundingBox(
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bbox,
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matrix
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);
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if (minX === maxX || minY === maxY) {
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// From real-life file, bbox was [0, 0, 0, 0]. In this case,
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// just apply the transform for rect
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return [1, 0, 0, 1, rect[0], rect[1]];
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}
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const xRatio = (rect[2] - rect[0]) / (maxX - minX);
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const yRatio = (rect[3] - rect[1]) / (maxY - minY);
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return [
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xRatio,
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0,
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0,
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yRatio,
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rect[0] - minX * xRatio,
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rect[1] - minY * yRatio,
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];
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}
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class Annotation {
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constructor(params) {
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const dict = params.dict;
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this.setContents(dict.get("Contents"));
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this.setModificationDate(dict.get("M"));
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this.setFlags(dict.get("F"));
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this.setRectangle(dict.getArray("Rect"));
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this.setColor(dict.getArray("C"));
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this.setBorderStyle(dict);
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this.setAppearance(dict);
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// Expose public properties using a data object.
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this.data = {
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annotationFlags: this.flags,
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borderStyle: this.borderStyle,
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color: this.color,
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contents: this.contents,
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hasAppearance: !!this.appearance,
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id: params.id,
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modificationDate: this.modificationDate,
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rect: this.rectangle,
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subtype: params.subtype,
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};
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}
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/**
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* @private
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*/
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_hasFlag(flags, flag) {
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return !!(flags & flag);
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}
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/**
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* @private
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*/
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_isViewable(flags) {
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return (
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!this._hasFlag(flags, AnnotationFlag.INVISIBLE) &&
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!this._hasFlag(flags, AnnotationFlag.HIDDEN) &&
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!this._hasFlag(flags, AnnotationFlag.NOVIEW)
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);
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}
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/**
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* @private
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*/
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_isPrintable(flags) {
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return (
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this._hasFlag(flags, AnnotationFlag.PRINT) &&
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!this._hasFlag(flags, AnnotationFlag.INVISIBLE) &&
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!this._hasFlag(flags, AnnotationFlag.HIDDEN)
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);
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}
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/**
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* @type {boolean}
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*/
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get viewable() {
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if (this.flags === 0) {
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return true;
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}
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return this._isViewable(this.flags);
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}
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/**
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* @type {boolean}
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*/
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get printable() {
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if (this.flags === 0) {
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return false;
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}
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return this._isPrintable(this.flags);
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}
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/**
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* Set the contents.
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*
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* @public
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* @memberof Annotation
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* @param {string} contents - Text to display for the annotation or, if the
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* type of annotation does not display text, a
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* description of the annotation's contents
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*/
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setContents(contents) {
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this.contents = stringToPDFString(contents || "");
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}
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/**
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* Set the modification date.
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*
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* @public
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* @memberof Annotation
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* @param {string} modificationDate - PDF date string that indicates when the
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* annotation was last modified
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*/
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setModificationDate(modificationDate) {
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this.modificationDate = isString(modificationDate)
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? modificationDate
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: null;
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}
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/**
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* Set the flags.
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*
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* @public
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* @memberof Annotation
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* @param {number} flags - Unsigned 32-bit integer specifying annotation
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* characteristics
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* @see {@link shared/util.js}
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*/
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setFlags(flags) {
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this.flags = Number.isInteger(flags) && flags > 0 ? flags : 0;
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}
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/**
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* Check if a provided flag is set.
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*
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* @public
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* @memberof Annotation
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* @param {number} flag - Hexadecimal representation for an annotation
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* characteristic
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* @returns {boolean}
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* @see {@link shared/util.js}
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*/
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hasFlag(flag) {
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return this._hasFlag(this.flags, flag);
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}
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/**
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* Set the rectangle.
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*
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* @public
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* @memberof Annotation
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* @param {Array} rectangle - The rectangle array with exactly four entries
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*/
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setRectangle(rectangle) {
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if (Array.isArray(rectangle) && rectangle.length === 4) {
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this.rectangle = Util.normalizeRect(rectangle);
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} else {
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this.rectangle = [0, 0, 0, 0];
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}
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}
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/**
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* Set the color and take care of color space conversion.
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* The default value is black, in RGB color space.
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*
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* @public
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* @memberof Annotation
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* @param {Array} color - The color array containing either 0
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* (transparent), 1 (grayscale), 3 (RGB) or
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* 4 (CMYK) elements
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*/
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setColor(color) {
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const rgbColor = new Uint8ClampedArray(3);
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if (!Array.isArray(color)) {
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this.color = rgbColor;
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return;
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}
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switch (color.length) {
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case 0: // Transparent, which we indicate with a null value
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this.color = null;
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break;
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case 1: // Convert grayscale to RGB
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ColorSpace.singletons.gray.getRgbItem(color, 0, rgbColor, 0);
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this.color = rgbColor;
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break;
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case 3: // Convert RGB percentages to RGB
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ColorSpace.singletons.rgb.getRgbItem(color, 0, rgbColor, 0);
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this.color = rgbColor;
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break;
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case 4: // Convert CMYK to RGB
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ColorSpace.singletons.cmyk.getRgbItem(color, 0, rgbColor, 0);
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this.color = rgbColor;
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break;
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default:
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this.color = rgbColor;
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break;
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}
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}
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/**
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* Set the border style (as AnnotationBorderStyle object).
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*
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* @public
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* @memberof Annotation
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* @param {Dict} borderStyle - The border style dictionary
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*/
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setBorderStyle(borderStyle) {
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if (
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typeof PDFJSDev === "undefined" ||
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PDFJSDev.test("!PRODUCTION || TESTING")
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) {
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assert(this.rectangle, "setRectangle must have been called previously.");
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}
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this.borderStyle = new AnnotationBorderStyle();
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if (!isDict(borderStyle)) {
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return;
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}
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if (borderStyle.has("BS")) {
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const dict = borderStyle.get("BS");
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const dictType = dict.get("Type");
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if (!dictType || isName(dictType, "Border")) {
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this.borderStyle.setWidth(dict.get("W"), this.rectangle);
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this.borderStyle.setStyle(dict.get("S"));
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this.borderStyle.setDashArray(dict.getArray("D"));
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}
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} else if (borderStyle.has("Border")) {
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const array = borderStyle.getArray("Border");
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if (Array.isArray(array) && array.length >= 3) {
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this.borderStyle.setHorizontalCornerRadius(array[0]);
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this.borderStyle.setVerticalCornerRadius(array[1]);
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this.borderStyle.setWidth(array[2], this.rectangle);
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if (array.length === 4) {
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// Dash array available
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this.borderStyle.setDashArray(array[3]);
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}
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}
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} else {
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// There are no border entries in the dictionary. According to the
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// specification, we should draw a solid border of width 1 in that
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// case, but Adobe Reader did not implement that part of the
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// specification and instead draws no border at all, so we do the same.
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// See also https://github.com/mozilla/pdf.js/issues/6179.
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this.borderStyle.setWidth(0);
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}
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}
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/**
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* Set the (normal) appearance.
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*
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* @public
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* @memberof Annotation
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* @param {Dict} dict - The annotation's data dictionary
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*/
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setAppearance(dict) {
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this.appearance = null;
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const appearanceStates = dict.get("AP");
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if (!isDict(appearanceStates)) {
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return;
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}
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// In case the normal appearance is a stream, then it is used directly.
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const normalAppearanceState = appearanceStates.get("N");
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if (isStream(normalAppearanceState)) {
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this.appearance = normalAppearanceState;
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return;
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}
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if (!isDict(normalAppearanceState)) {
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return;
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}
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// In case the normal appearance is a dictionary, the `AS` entry provides
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// the key of the stream in this dictionary.
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const as = dict.get("AS");
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if (!isName(as) || !normalAppearanceState.has(as.name)) {
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return;
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}
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this.appearance = normalAppearanceState.get(as.name);
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}
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loadResources(keys) {
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return this.appearance.dict.getAsync("Resources").then(resources => {
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if (!resources) {
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return undefined;
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}
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const objectLoader = new ObjectLoader(resources, keys, resources.xref);
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return objectLoader.load().then(function () {
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return resources;
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});
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});
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}
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|
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getOperatorList(evaluator, task, renderForms, annotationStorage) {
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if (!this.appearance) {
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return Promise.resolve(new OperatorList());
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}
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const appearance = this.appearance;
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const data = this.data;
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const appearanceDict = appearance.dict;
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const resourcesPromise = this.loadResources([
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"ExtGState",
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"ColorSpace",
|
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"Pattern",
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"Shading",
|
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"XObject",
|
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"Font",
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]);
|
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const bbox = appearanceDict.getArray("BBox") || [0, 0, 1, 1];
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const matrix = appearanceDict.getArray("Matrix") || [1, 0, 0, 1, 0, 0];
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const transform = getTransformMatrix(data.rect, bbox, matrix);
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return resourcesPromise.then(resources => {
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const opList = new OperatorList();
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opList.addOp(OPS.beginAnnotation, [data.rect, transform, matrix]);
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return evaluator
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.getOperatorList({
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stream: appearance,
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task,
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resources,
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operatorList: opList,
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})
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.then(() => {
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opList.addOp(OPS.endAnnotation, []);
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appearance.reset();
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return opList;
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});
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});
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}
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}
|
|
|
|
/**
|
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* Contains all data regarding an annotation's border style.
|
|
*/
|
|
class AnnotationBorderStyle {
|
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constructor() {
|
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this.width = 1;
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this.style = AnnotationBorderStyleType.SOLID;
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this.dashArray = [3];
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this.horizontalCornerRadius = 0;
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this.verticalCornerRadius = 0;
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}
|
|
|
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/**
|
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* Set the width.
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*
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* @public
|
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* @memberof AnnotationBorderStyle
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|
* @param {number} width - The width.
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* @param {Array} rect - The annotation `Rect` entry.
|
|
*/
|
|
setWidth(width, rect = [0, 0, 0, 0]) {
|
|
if (
|
|
typeof PDFJSDev === "undefined" ||
|
|
PDFJSDev.test("!PRODUCTION || TESTING")
|
|
) {
|
|
assert(
|
|
Array.isArray(rect) && rect.length === 4,
|
|
"A valid `rect` parameter must be provided."
|
|
);
|
|
}
|
|
|
|
// Some corrupt PDF generators may provide the width as a `Name`,
|
|
// rather than as a number (fixes issue 10385).
|
|
if (isName(width)) {
|
|
this.width = 0; // This is consistent with the behaviour in Adobe Reader.
|
|
return;
|
|
}
|
|
if (Number.isInteger(width)) {
|
|
if (width > 0) {
|
|
const maxWidth = (rect[2] - rect[0]) / 2;
|
|
const maxHeight = (rect[3] - rect[1]) / 2;
|
|
|
|
// Ignore large `width`s, since they lead to the Annotation overflowing
|
|
// the size set by the `Rect` entry thus causing the `annotationLayer`
|
|
// to render it over the surrounding document (fixes bug1552113.pdf).
|
|
if (
|
|
maxWidth > 0 &&
|
|
maxHeight > 0 &&
|
|
(width > maxWidth || width > maxHeight)
|
|
) {
|
|
warn(`AnnotationBorderStyle.setWidth - ignoring width: ${width}`);
|
|
width = 1;
|
|
}
|
|
}
|
|
this.width = width;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Set the style.
|
|
*
|
|
* @public
|
|
* @memberof AnnotationBorderStyle
|
|
* @param {Name} style - The annotation style.
|
|
* @see {@link shared/util.js}
|
|
*/
|
|
setStyle(style) {
|
|
if (!isName(style)) {
|
|
return;
|
|
}
|
|
switch (style.name) {
|
|
case "S":
|
|
this.style = AnnotationBorderStyleType.SOLID;
|
|
break;
|
|
|
|
case "D":
|
|
this.style = AnnotationBorderStyleType.DASHED;
|
|
break;
|
|
|
|
case "B":
|
|
this.style = AnnotationBorderStyleType.BEVELED;
|
|
break;
|
|
|
|
case "I":
|
|
this.style = AnnotationBorderStyleType.INSET;
|
|
break;
|
|
|
|
case "U":
|
|
this.style = AnnotationBorderStyleType.UNDERLINE;
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Set the dash array.
|
|
*
|
|
* @public
|
|
* @memberof AnnotationBorderStyle
|
|
* @param {Array} dashArray - The dash array with at least one element
|
|
*/
|
|
setDashArray(dashArray) {
|
|
// We validate the dash array, but we do not use it because CSS does not
|
|
// allow us to change spacing of dashes. For more information, visit
|
|
// http://www.w3.org/TR/css3-background/#the-border-style.
|
|
if (Array.isArray(dashArray) && dashArray.length > 0) {
|
|
// According to the PDF specification: the elements in `dashArray`
|
|
// shall be numbers that are nonnegative and not all equal to zero.
|
|
let isValid = true;
|
|
let allZeros = true;
|
|
for (const element of dashArray) {
|
|
const validNumber = +element >= 0;
|
|
if (!validNumber) {
|
|
isValid = false;
|
|
break;
|
|
} else if (element > 0) {
|
|
allZeros = false;
|
|
}
|
|
}
|
|
if (isValid && !allZeros) {
|
|
this.dashArray = dashArray;
|
|
} else {
|
|
this.width = 0; // Adobe behavior when the array is invalid.
|
|
}
|
|
} else if (dashArray) {
|
|
this.width = 0; // Adobe behavior when the array is invalid.
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Set the horizontal corner radius (from a Border dictionary).
|
|
*
|
|
* @public
|
|
* @memberof AnnotationBorderStyle
|
|
* @param {number} radius - The horizontal corner radius.
|
|
*/
|
|
setHorizontalCornerRadius(radius) {
|
|
if (Number.isInteger(radius)) {
|
|
this.horizontalCornerRadius = radius;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Set the vertical corner radius (from a Border dictionary).
|
|
*
|
|
* @public
|
|
* @memberof AnnotationBorderStyle
|
|
* @param {number} radius - The vertical corner radius.
|
|
*/
|
|
setVerticalCornerRadius(radius) {
|
|
if (Number.isInteger(radius)) {
|
|
this.verticalCornerRadius = radius;
|
|
}
|
|
}
|
|
}
|
|
|
|
class MarkupAnnotation extends Annotation {
|
|
constructor(parameters) {
|
|
super(parameters);
|
|
|
|
const dict = parameters.dict;
|
|
|
|
if (dict.has("IRT")) {
|
|
const rawIRT = dict.getRaw("IRT");
|
|
this.data.inReplyTo = isRef(rawIRT) ? rawIRT.toString() : null;
|
|
|
|
const rt = dict.get("RT");
|
|
this.data.replyType = isName(rt) ? rt.name : AnnotationReplyType.REPLY;
|
|
}
|
|
|
|
if (this.data.replyType === AnnotationReplyType.GROUP) {
|
|
// Subordinate annotations in a group should inherit
|
|
// the group attributes from the primary annotation.
|
|
const parent = dict.get("IRT");
|
|
|
|
this.data.title = stringToPDFString(parent.get("T") || "");
|
|
|
|
this.setContents(parent.get("Contents"));
|
|
this.data.contents = this.contents;
|
|
|
|
if (!parent.has("CreationDate")) {
|
|
this.data.creationDate = null;
|
|
} else {
|
|
this.setCreationDate(parent.get("CreationDate"));
|
|
this.data.creationDate = this.creationDate;
|
|
}
|
|
|
|
if (!parent.has("M")) {
|
|
this.data.modificationDate = null;
|
|
} else {
|
|
this.setModificationDate(parent.get("M"));
|
|
this.data.modificationDate = this.modificationDate;
|
|
}
|
|
|
|
this.data.hasPopup = parent.has("Popup");
|
|
|
|
if (!parent.has("C")) {
|
|
// Fall back to the default background color.
|
|
this.data.color = null;
|
|
} else {
|
|
this.setColor(parent.getArray("C"));
|
|
this.data.color = this.color;
|
|
}
|
|
} else {
|
|
this.data.title = stringToPDFString(dict.get("T") || "");
|
|
|
|
this.setCreationDate(dict.get("CreationDate"));
|
|
this.data.creationDate = this.creationDate;
|
|
|
|
this.data.hasPopup = dict.has("Popup");
|
|
|
|
if (!dict.has("C")) {
|
|
// Fall back to the default background color.
|
|
this.data.color = null;
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Set the creation date.
|
|
*
|
|
* @public
|
|
* @memberof MarkupAnnotation
|
|
* @param {string} creationDate - PDF date string that indicates when the
|
|
* annotation was originally created
|
|
*/
|
|
setCreationDate(creationDate) {
|
|
this.creationDate = isString(creationDate) ? creationDate : null;
|
|
}
|
|
}
|
|
|
|
class WidgetAnnotation extends Annotation {
|
|
constructor(params) {
|
|
super(params);
|
|
|
|
const dict = params.dict;
|
|
const data = this.data;
|
|
|
|
data.annotationType = AnnotationType.WIDGET;
|
|
data.fieldName = this._constructFieldName(dict);
|
|
data.fieldValue = getInheritableProperty({
|
|
dict,
|
|
key: "V",
|
|
getArray: true,
|
|
});
|
|
data.alternativeText = stringToPDFString(dict.get("TU") || "");
|
|
data.defaultAppearance =
|
|
getInheritableProperty({ dict, key: "DA" }) ||
|
|
params.acroForm.get("DA") ||
|
|
"";
|
|
const fieldType = getInheritableProperty({ dict, key: "FT" });
|
|
data.fieldType = isName(fieldType) ? fieldType.name : null;
|
|
this.fieldResources =
|
|
getInheritableProperty({ dict, key: "DR" }) ||
|
|
params.acroForm.get("DR") ||
|
|
Dict.empty;
|
|
|
|
data.fieldFlags = getInheritableProperty({ dict, key: "Ff" });
|
|
if (!Number.isInteger(data.fieldFlags) || data.fieldFlags < 0) {
|
|
data.fieldFlags = 0;
|
|
}
|
|
|
|
data.readOnly = this.hasFieldFlag(AnnotationFieldFlag.READONLY);
|
|
|
|
// Hide signatures because we cannot validate them, and unset the fieldValue
|
|
// since it's (most likely) a `Dict` which is non-serializable and will thus
|
|
// cause errors when sending annotations to the main-thread (issue 10347).
|
|
if (data.fieldType === "Sig") {
|
|
data.fieldValue = null;
|
|
this.setFlags(AnnotationFlag.HIDDEN);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Construct the (fully qualified) field name from the (partial) field
|
|
* names of the field and its ancestors.
|
|
*
|
|
* @private
|
|
* @memberof WidgetAnnotation
|
|
* @param {Dict} dict - Complete widget annotation dictionary
|
|
* @returns {string}
|
|
*/
|
|
_constructFieldName(dict) {
|
|
// Both the `Parent` and `T` fields are optional. While at least one of
|
|
// them should be provided, bad PDF generators may fail to do so.
|
|
if (!dict.has("T") && !dict.has("Parent")) {
|
|
warn("Unknown field name, falling back to empty field name.");
|
|
return "";
|
|
}
|
|
|
|
// If no parent exists, the partial and fully qualified names are equal.
|
|
if (!dict.has("Parent")) {
|
|
return stringToPDFString(dict.get("T"));
|
|
}
|
|
|
|
// Form the fully qualified field name by appending the partial name to
|
|
// the parent's fully qualified name, separated by a period.
|
|
const fieldName = [];
|
|
if (dict.has("T")) {
|
|
fieldName.unshift(stringToPDFString(dict.get("T")));
|
|
}
|
|
|
|
let loopDict = dict;
|
|
while (loopDict.has("Parent")) {
|
|
loopDict = loopDict.get("Parent");
|
|
if (!isDict(loopDict)) {
|
|
// Even though it is not allowed according to the PDF specification,
|
|
// bad PDF generators may provide a `Parent` entry that is not a
|
|
// dictionary, but `null` for example (issue 8143).
|
|
break;
|
|
}
|
|
|
|
if (loopDict.has("T")) {
|
|
fieldName.unshift(stringToPDFString(loopDict.get("T")));
|
|
}
|
|
}
|
|
return fieldName.join(".");
|
|
}
|
|
|
|
/**
|
|
* Check if a provided field flag is set.
|
|
*
|
|
* @public
|
|
* @memberof WidgetAnnotation
|
|
* @param {number} flag - Hexadecimal representation for an annotation
|
|
* field characteristic
|
|
* @returns {boolean}
|
|
* @see {@link shared/util.js}
|
|
*/
|
|
hasFieldFlag(flag) {
|
|
return !!(this.data.fieldFlags & flag);
|
|
}
|
|
|
|
getOperatorList(evaluator, task, renderForms, annotationStorage) {
|
|
// Do not render form elements on the canvas when interactive forms are
|
|
// enabled. The display layer is responsible for rendering them instead.
|
|
if (renderForms) {
|
|
return Promise.resolve(new OperatorList());
|
|
}
|
|
return super.getOperatorList(
|
|
evaluator,
|
|
task,
|
|
renderForms,
|
|
annotationStorage
|
|
);
|
|
}
|
|
}
|
|
|
|
class TextWidgetAnnotation extends WidgetAnnotation {
|
|
constructor(params) {
|
|
super(params);
|
|
|
|
const dict = params.dict;
|
|
|
|
// The field value is always a string.
|
|
this.data.fieldValue = stringToPDFString(this.data.fieldValue || "");
|
|
|
|
// Determine the alignment of text in the field.
|
|
let alignment = getInheritableProperty({ dict, key: "Q" });
|
|
if (!Number.isInteger(alignment) || alignment < 0 || alignment > 2) {
|
|
alignment = null;
|
|
}
|
|
this.data.textAlignment = alignment;
|
|
|
|
// Determine the maximum length of text in the field.
|
|
let maximumLength = getInheritableProperty({ dict, key: "MaxLen" });
|
|
if (!Number.isInteger(maximumLength) || maximumLength < 0) {
|
|
maximumLength = null;
|
|
}
|
|
this.data.maxLen = maximumLength;
|
|
|
|
// Process field flags for the display layer.
|
|
this.data.multiLine = this.hasFieldFlag(AnnotationFieldFlag.MULTILINE);
|
|
this.data.comb =
|
|
this.hasFieldFlag(AnnotationFieldFlag.COMB) &&
|
|
!this.hasFieldFlag(AnnotationFieldFlag.MULTILINE) &&
|
|
!this.hasFieldFlag(AnnotationFieldFlag.PASSWORD) &&
|
|
!this.hasFieldFlag(AnnotationFieldFlag.FILESELECT) &&
|
|
this.data.maxLen !== null;
|
|
}
|
|
|
|
getOperatorList(evaluator, task, renderForms, annotationStorage) {
|
|
if (renderForms || this.appearance) {
|
|
return super.getOperatorList(
|
|
evaluator,
|
|
task,
|
|
renderForms,
|
|
annotationStorage
|
|
);
|
|
}
|
|
|
|
const operatorList = new OperatorList();
|
|
|
|
// Even if there is an appearance stream, ignore it. This is the
|
|
// behaviour used by Adobe Reader.
|
|
if (!this.data.defaultAppearance) {
|
|
return Promise.resolve(operatorList);
|
|
}
|
|
|
|
const stream = new Stream(stringToBytes(this.data.defaultAppearance));
|
|
return evaluator
|
|
.getOperatorList({
|
|
stream,
|
|
task,
|
|
resources: this.fieldResources,
|
|
operatorList,
|
|
})
|
|
.then(function () {
|
|
return operatorList;
|
|
});
|
|
}
|
|
}
|
|
|
|
class ButtonWidgetAnnotation extends WidgetAnnotation {
|
|
constructor(params) {
|
|
super(params);
|
|
|
|
this.checkedAppearance = null;
|
|
this.uncheckedAppearance = null;
|
|
|
|
this.data.checkBox =
|
|
!this.hasFieldFlag(AnnotationFieldFlag.RADIO) &&
|
|
!this.hasFieldFlag(AnnotationFieldFlag.PUSHBUTTON);
|
|
this.data.radioButton =
|
|
this.hasFieldFlag(AnnotationFieldFlag.RADIO) &&
|
|
!this.hasFieldFlag(AnnotationFieldFlag.PUSHBUTTON);
|
|
this.data.pushButton = this.hasFieldFlag(AnnotationFieldFlag.PUSHBUTTON);
|
|
|
|
if (this.data.checkBox) {
|
|
this._processCheckBox(params);
|
|
} else if (this.data.radioButton) {
|
|
this._processRadioButton(params);
|
|
} else if (this.data.pushButton) {
|
|
this._processPushButton(params);
|
|
} else {
|
|
warn("Invalid field flags for button widget annotation");
|
|
}
|
|
}
|
|
|
|
getOperatorList(evaluator, task, renderForms, annotationStorage) {
|
|
if (annotationStorage) {
|
|
const value = annotationStorage[this.data.id] || false;
|
|
let appearance;
|
|
if (value) {
|
|
appearance = this.checkedAppearance;
|
|
} else {
|
|
appearance = this.uncheckedAppearance;
|
|
}
|
|
|
|
if (appearance) {
|
|
const savedAppearance = this.appearance;
|
|
this.appearance = appearance;
|
|
const operatorList = super.getOperatorList(
|
|
evaluator,
|
|
task,
|
|
renderForms,
|
|
annotationStorage
|
|
);
|
|
this.appearance = savedAppearance;
|
|
return operatorList;
|
|
}
|
|
|
|
// No appearance
|
|
return Promise.resolve(new OperatorList());
|
|
}
|
|
return super.getOperatorList(
|
|
evaluator,
|
|
task,
|
|
renderForms,
|
|
annotationStorage
|
|
);
|
|
}
|
|
|
|
_processCheckBox(params) {
|
|
if (isName(this.data.fieldValue)) {
|
|
this.data.fieldValue = this.data.fieldValue.name;
|
|
}
|
|
|
|
const customAppearance = params.dict.get("AP");
|
|
if (!isDict(customAppearance)) {
|
|
return;
|
|
}
|
|
|
|
const exportValueOptionsDict = customAppearance.get("D");
|
|
if (!isDict(exportValueOptionsDict)) {
|
|
return;
|
|
}
|
|
|
|
const exportValues = exportValueOptionsDict.getKeys();
|
|
const hasCorrectOptionCount = exportValues.length === 2;
|
|
if (!hasCorrectOptionCount) {
|
|
return;
|
|
}
|
|
|
|
this.data.exportValue =
|
|
exportValues[0] === "Off" ? exportValues[1] : exportValues[0];
|
|
|
|
const normalAppearance = customAppearance.get("N");
|
|
if (!isDict(normalAppearance)) {
|
|
return;
|
|
}
|
|
|
|
this.checkedAppearance = normalAppearance.get(this.data.exportValue);
|
|
this.uncheckedAppearance = normalAppearance.get("Off") || null;
|
|
}
|
|
|
|
_processRadioButton(params) {
|
|
this.data.fieldValue = this.data.buttonValue = null;
|
|
|
|
// The parent field's `V` entry holds a `Name` object with the appearance
|
|
// state of whichever child field is currently in the "on" state.
|
|
const fieldParent = params.dict.get("Parent");
|
|
if (isDict(fieldParent) && fieldParent.has("V")) {
|
|
const fieldParentValue = fieldParent.get("V");
|
|
if (isName(fieldParentValue)) {
|
|
this.data.fieldValue = fieldParentValue.name;
|
|
}
|
|
}
|
|
|
|
// The button's value corresponds to its appearance state.
|
|
const appearanceStates = params.dict.get("AP");
|
|
if (!isDict(appearanceStates)) {
|
|
return;
|
|
}
|
|
const normalAppearanceState = appearanceStates.get("N");
|
|
if (!isDict(normalAppearanceState)) {
|
|
return;
|
|
}
|
|
for (const key of normalAppearanceState.getKeys()) {
|
|
if (key !== "Off") {
|
|
this.data.buttonValue = key;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
_processPushButton(params) {
|
|
if (!params.dict.has("A")) {
|
|
warn("Push buttons without action dictionaries are not supported");
|
|
return;
|
|
}
|
|
|
|
Catalog.parseDestDictionary({
|
|
destDict: params.dict,
|
|
resultObj: this.data,
|
|
docBaseUrl: params.pdfManager.docBaseUrl,
|
|
});
|
|
}
|
|
}
|
|
|
|
class ChoiceWidgetAnnotation extends WidgetAnnotation {
|
|
constructor(params) {
|
|
super(params);
|
|
|
|
// Determine the options. The options array may consist of strings or
|
|
// arrays. If the array consists of arrays, then the first element of
|
|
// each array is the export value and the second element of each array is
|
|
// the display value. If the array consists of strings, then these
|
|
// represent both the export and display value. In this case, we convert
|
|
// it to an array of arrays as well for convenience in the display layer.
|
|
// Note that the specification does not state that the `Opt` field is
|
|
// inheritable, but in practice PDF generators do make annotations
|
|
// inherit the options from a parent annotation (issue 8094).
|
|
this.data.options = [];
|
|
|
|
const options = getInheritableProperty({ dict: params.dict, key: "Opt" });
|
|
if (Array.isArray(options)) {
|
|
const xref = params.xref;
|
|
for (let i = 0, ii = options.length; i < ii; i++) {
|
|
const option = xref.fetchIfRef(options[i]);
|
|
const isOptionArray = Array.isArray(option);
|
|
|
|
this.data.options[i] = {
|
|
exportValue: isOptionArray ? xref.fetchIfRef(option[0]) : option,
|
|
displayValue: stringToPDFString(
|
|
isOptionArray ? xref.fetchIfRef(option[1]) : option
|
|
),
|
|
};
|
|
}
|
|
}
|
|
|
|
// Determine the field value. In this case, it may be a string or an
|
|
// array of strings. For convenience in the display layer, convert the
|
|
// string to an array of one string as well.
|
|
if (!Array.isArray(this.data.fieldValue)) {
|
|
this.data.fieldValue = [this.data.fieldValue];
|
|
}
|
|
|
|
// Process field flags for the display layer.
|
|
this.data.combo = this.hasFieldFlag(AnnotationFieldFlag.COMBO);
|
|
this.data.multiSelect = this.hasFieldFlag(AnnotationFieldFlag.MULTISELECT);
|
|
}
|
|
}
|
|
|
|
class TextAnnotation extends MarkupAnnotation {
|
|
constructor(parameters) {
|
|
const DEFAULT_ICON_SIZE = 22; // px
|
|
|
|
super(parameters);
|
|
|
|
const dict = parameters.dict;
|
|
this.data.annotationType = AnnotationType.TEXT;
|
|
|
|
if (this.data.hasAppearance) {
|
|
this.data.name = "NoIcon";
|
|
} else {
|
|
this.data.rect[1] = this.data.rect[3] - DEFAULT_ICON_SIZE;
|
|
this.data.rect[2] = this.data.rect[0] + DEFAULT_ICON_SIZE;
|
|
this.data.name = dict.has("Name") ? dict.get("Name").name : "Note";
|
|
}
|
|
|
|
if (dict.has("State")) {
|
|
this.data.state = dict.get("State") || null;
|
|
this.data.stateModel = dict.get("StateModel") || null;
|
|
} else {
|
|
this.data.state = null;
|
|
this.data.stateModel = null;
|
|
}
|
|
}
|
|
}
|
|
|
|
class LinkAnnotation extends Annotation {
|
|
constructor(params) {
|
|
super(params);
|
|
|
|
this.data.annotationType = AnnotationType.LINK;
|
|
|
|
const quadPoints = getQuadPoints(params.dict, this.rectangle);
|
|
if (quadPoints) {
|
|
this.data.quadPoints = quadPoints;
|
|
}
|
|
|
|
Catalog.parseDestDictionary({
|
|
destDict: params.dict,
|
|
resultObj: this.data,
|
|
docBaseUrl: params.pdfManager.docBaseUrl,
|
|
});
|
|
}
|
|
}
|
|
|
|
class PopupAnnotation extends Annotation {
|
|
constructor(parameters) {
|
|
super(parameters);
|
|
|
|
this.data.annotationType = AnnotationType.POPUP;
|
|
|
|
let parentItem = parameters.dict.get("Parent");
|
|
if (!parentItem) {
|
|
warn("Popup annotation has a missing or invalid parent annotation.");
|
|
return;
|
|
}
|
|
|
|
const parentSubtype = parentItem.get("Subtype");
|
|
this.data.parentType = isName(parentSubtype) ? parentSubtype.name : null;
|
|
const rawParent = parameters.dict.getRaw("Parent");
|
|
this.data.parentId = isRef(rawParent) ? rawParent.toString() : null;
|
|
|
|
const rt = parentItem.get("RT");
|
|
if (isName(rt, AnnotationReplyType.GROUP)) {
|
|
// Subordinate annotations in a group should inherit
|
|
// the group attributes from the primary annotation.
|
|
parentItem = parentItem.get("IRT");
|
|
}
|
|
|
|
if (!parentItem.has("M")) {
|
|
this.data.modificationDate = null;
|
|
} else {
|
|
this.setModificationDate(parentItem.get("M"));
|
|
this.data.modificationDate = this.modificationDate;
|
|
}
|
|
|
|
if (!parentItem.has("C")) {
|
|
// Fall back to the default background color.
|
|
this.data.color = null;
|
|
} else {
|
|
this.setColor(parentItem.getArray("C"));
|
|
this.data.color = this.color;
|
|
}
|
|
|
|
// If the Popup annotation is not viewable, but the parent annotation is,
|
|
// that is most likely a bug. Fallback to inherit the flags from the parent
|
|
// annotation (this is consistent with the behaviour in Adobe Reader).
|
|
if (!this.viewable) {
|
|
const parentFlags = parentItem.get("F");
|
|
if (this._isViewable(parentFlags)) {
|
|
this.setFlags(parentFlags);
|
|
}
|
|
}
|
|
|
|
this.data.title = stringToPDFString(parentItem.get("T") || "");
|
|
this.data.contents = stringToPDFString(parentItem.get("Contents") || "");
|
|
}
|
|
}
|
|
|
|
class FreeTextAnnotation extends MarkupAnnotation {
|
|
constructor(parameters) {
|
|
super(parameters);
|
|
|
|
this.data.annotationType = AnnotationType.FREETEXT;
|
|
}
|
|
}
|
|
|
|
class LineAnnotation extends MarkupAnnotation {
|
|
constructor(parameters) {
|
|
super(parameters);
|
|
|
|
this.data.annotationType = AnnotationType.LINE;
|
|
|
|
this.data.lineCoordinates = Util.normalizeRect(
|
|
parameters.dict.getArray("L")
|
|
);
|
|
}
|
|
}
|
|
|
|
class SquareAnnotation extends MarkupAnnotation {
|
|
constructor(parameters) {
|
|
super(parameters);
|
|
|
|
this.data.annotationType = AnnotationType.SQUARE;
|
|
}
|
|
}
|
|
|
|
class CircleAnnotation extends MarkupAnnotation {
|
|
constructor(parameters) {
|
|
super(parameters);
|
|
|
|
this.data.annotationType = AnnotationType.CIRCLE;
|
|
}
|
|
}
|
|
|
|
class PolylineAnnotation extends MarkupAnnotation {
|
|
constructor(parameters) {
|
|
super(parameters);
|
|
|
|
this.data.annotationType = AnnotationType.POLYLINE;
|
|
|
|
// The vertices array is an array of numbers representing the alternating
|
|
// horizontal and vertical coordinates, respectively, of each vertex.
|
|
// Convert this to an array of objects with x and y coordinates.
|
|
const rawVertices = parameters.dict.getArray("Vertices");
|
|
this.data.vertices = [];
|
|
for (let i = 0, ii = rawVertices.length; i < ii; i += 2) {
|
|
this.data.vertices.push({
|
|
x: rawVertices[i],
|
|
y: rawVertices[i + 1],
|
|
});
|
|
}
|
|
}
|
|
}
|
|
|
|
class PolygonAnnotation extends PolylineAnnotation {
|
|
constructor(parameters) {
|
|
// Polygons are specific forms of polylines, so reuse their logic.
|
|
super(parameters);
|
|
|
|
this.data.annotationType = AnnotationType.POLYGON;
|
|
}
|
|
}
|
|
|
|
class CaretAnnotation extends MarkupAnnotation {
|
|
constructor(parameters) {
|
|
super(parameters);
|
|
|
|
this.data.annotationType = AnnotationType.CARET;
|
|
}
|
|
}
|
|
|
|
class InkAnnotation extends MarkupAnnotation {
|
|
constructor(parameters) {
|
|
super(parameters);
|
|
|
|
this.data.annotationType = AnnotationType.INK;
|
|
|
|
const xref = parameters.xref;
|
|
const originalInkLists = parameters.dict.getArray("InkList");
|
|
this.data.inkLists = [];
|
|
for (let i = 0, ii = originalInkLists.length; i < ii; ++i) {
|
|
// The raw ink lists array contains arrays of numbers representing
|
|
// the alternating horizontal and vertical coordinates, respectively,
|
|
// of each vertex. Convert this to an array of objects with x and y
|
|
// coordinates.
|
|
this.data.inkLists.push([]);
|
|
for (let j = 0, jj = originalInkLists[i].length; j < jj; j += 2) {
|
|
this.data.inkLists[i].push({
|
|
x: xref.fetchIfRef(originalInkLists[i][j]),
|
|
y: xref.fetchIfRef(originalInkLists[i][j + 1]),
|
|
});
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
class HighlightAnnotation extends MarkupAnnotation {
|
|
constructor(parameters) {
|
|
super(parameters);
|
|
|
|
this.data.annotationType = AnnotationType.HIGHLIGHT;
|
|
|
|
const quadPoints = getQuadPoints(parameters.dict, this.rectangle);
|
|
if (quadPoints) {
|
|
this.data.quadPoints = quadPoints;
|
|
}
|
|
}
|
|
}
|
|
|
|
class UnderlineAnnotation extends MarkupAnnotation {
|
|
constructor(parameters) {
|
|
super(parameters);
|
|
|
|
this.data.annotationType = AnnotationType.UNDERLINE;
|
|
|
|
const quadPoints = getQuadPoints(parameters.dict, this.rectangle);
|
|
if (quadPoints) {
|
|
this.data.quadPoints = quadPoints;
|
|
}
|
|
}
|
|
}
|
|
|
|
class SquigglyAnnotation extends MarkupAnnotation {
|
|
constructor(parameters) {
|
|
super(parameters);
|
|
|
|
this.data.annotationType = AnnotationType.SQUIGGLY;
|
|
|
|
const quadPoints = getQuadPoints(parameters.dict, this.rectangle);
|
|
if (quadPoints) {
|
|
this.data.quadPoints = quadPoints;
|
|
}
|
|
}
|
|
}
|
|
|
|
class StrikeOutAnnotation extends MarkupAnnotation {
|
|
constructor(parameters) {
|
|
super(parameters);
|
|
|
|
this.data.annotationType = AnnotationType.STRIKEOUT;
|
|
|
|
const quadPoints = getQuadPoints(parameters.dict, this.rectangle);
|
|
if (quadPoints) {
|
|
this.data.quadPoints = quadPoints;
|
|
}
|
|
}
|
|
}
|
|
|
|
class StampAnnotation extends MarkupAnnotation {
|
|
constructor(parameters) {
|
|
super(parameters);
|
|
|
|
this.data.annotationType = AnnotationType.STAMP;
|
|
}
|
|
}
|
|
|
|
class FileAttachmentAnnotation extends MarkupAnnotation {
|
|
constructor(parameters) {
|
|
super(parameters);
|
|
|
|
const file = new FileSpec(parameters.dict.get("FS"), parameters.xref);
|
|
|
|
this.data.annotationType = AnnotationType.FILEATTACHMENT;
|
|
this.data.file = file.serializable;
|
|
}
|
|
}
|
|
|
|
export {
|
|
Annotation,
|
|
AnnotationBorderStyle,
|
|
AnnotationFactory,
|
|
MarkupAnnotation,
|
|
getQuadPoints,
|
|
};
|