pdf.js/src/core/xfa/factory.js
Calixte Denizet 45c3f00a27 XFA - Move the fake HTML representation of XFA from the worker to the main thread
- the only goal of this patch is to be able to get synchronously the fake html when printing from firefox:
    - in order to print we need to inject some html in beforeprint callback but we cannot block in waiting for all the pages.
  - from a memory point of view: it doesn't change anything since the fake HTML is deleted in the worker;
  - this way we don't break any assumptions.
2021-05-25 19:33:07 +02:00

65 lines
1.6 KiB
JavaScript

/* Copyright 2021 Mozilla Foundation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import { $toHTML } from "./xfa_object.js";
import { Binder } from "./bind.js";
import { XFAParser } from "./parser.js";
class XFAFactory {
constructor(data) {
try {
this.root = new XFAParser().parse(XFAFactory._createDocument(data));
this.form = new Binder(this.root).bind();
this._createPages();
} catch (e) {
console.log(e);
}
}
_createPages() {
this.pages = this.form[$toHTML]();
this.dims = this.pages.children.map(c => {
const { width, height } = c.attributes.style;
return [0, 0, parseInt(width), parseInt(height)];
});
}
getBoundingBox(pageIndex) {
return this.dims[pageIndex];
}
get numberPages() {
return this.dims.length;
}
getPages() {
if (!this.pages) {
this._createPages();
}
const pages = this.pages;
this.pages = null;
return pages;
}
static _createDocument(data) {
if (!data["/xdp:xdp"]) {
return data["xdp:xdp"];
}
return Object.values(data).join("");
}
}
export { XFAFactory };