87be43c193
This patch provides an overall simpler *and* more consistent way of handling the `viewport` parameter during printing of XFA forms, since it's now again guaranteed to always be an instance of `PageViewport`. Furthermore, for anyone attempting to e.g. implement custom printing of XFA forms this probably cannot hurt either.
135 lines
3.3 KiB
JavaScript
135 lines
3.3 KiB
JavaScript
/* Copyright 2021 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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import { XfaLayer } from "pdfjs-lib";
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/**
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* @typedef {Object} XfaLayerBuilderOptions
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* @property {HTMLDivElement} pageDiv
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* @property {PDFPage} pdfPage
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* @property {AnnotationStorage} [annotationStorage]
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*/
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class XfaLayerBuilder {
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/**
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* @param {XfaLayerBuilderOptions} options
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*/
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constructor({ pageDiv, pdfPage, xfaHtml, annotationStorage }) {
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this.pageDiv = pageDiv;
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this.pdfPage = pdfPage;
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this.xfaHtml = xfaHtml;
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this.annotationStorage = annotationStorage;
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this.div = null;
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this._cancelled = false;
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}
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/**
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* @param {PageViewport} viewport
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* @param {string} intent (default value is 'display')
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* @returns {Promise<void>} A promise that is resolved when rendering of the
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* annotations is complete.
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*/
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render(viewport, intent = "display") {
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if (intent === "print") {
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const parameters = {
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viewport: viewport.clone({ dontFlip: true }),
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div: this.div,
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xfa: this.xfaHtml,
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page: null,
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annotationStorage: this.annotationStorage,
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intent,
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};
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// Create an xfa layer div and render the form
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const div = document.createElement("div");
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this.pageDiv.appendChild(div);
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parameters.div = div;
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XfaLayer.render(parameters);
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return Promise.resolve();
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}
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// intent === "display"
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return this.pdfPage
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.getXfa()
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.then(xfa => {
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if (this._cancelled) {
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return;
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}
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const parameters = {
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viewport: viewport.clone({ dontFlip: true }),
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div: this.div,
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xfa,
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page: this.pdfPage,
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annotationStorage: this.annotationStorage,
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intent,
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};
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if (this.div) {
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XfaLayer.update(parameters);
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} else {
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// Create an xfa layer div and render the form
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this.div = document.createElement("div");
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this.pageDiv.appendChild(this.div);
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parameters.div = this.div;
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XfaLayer.render(parameters);
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}
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})
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.catch(error => {
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console.error(error);
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});
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}
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cancel() {
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this._cancelled = true;
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}
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hide() {
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if (!this.div) {
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return;
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}
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this.div.hidden = true;
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}
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}
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/**
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* @implements IPDFXfaLayerFactory
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*/
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class DefaultXfaLayerFactory {
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/**
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* @param {HTMLDivElement} pageDiv
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* @param {PDFPage} pdfPage
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* @param {AnnotationStorage} [annotationStorage]
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* @param {Object} [xfaHtml]
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*/
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createXfaLayerBuilder(
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pageDiv,
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pdfPage,
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annotationStorage = null,
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xfaHtml = null
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) {
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return new XfaLayerBuilder({
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pageDiv,
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pdfPage,
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annotationStorage,
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xfaHtml,
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});
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}
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}
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export { DefaultXfaLayerFactory, XfaLayerBuilder };
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