pdfjs-dist
Version:
Generic build of Mozilla's PDF.js library.
119 lines (104 loc) • 3.64 kB
JavaScript
/**
* @licstart The following is the entire license notice for the
* Javascript code in this page
*
* Copyright 2020 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.
*
* @licend The above is the entire license notice for the
* Javascript code in this page
*/
;
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.FirefoxPrintService = FirefoxPrintService;
var _app_options = require("./app_options.js");
var _ui_utils = require("./ui_utils.js");
var _app = require("./app.js");
var _pdf = require("../pdf");
function composePage(pdfDocument, pageNumber, size, printContainer) {
const canvas = document.createElement("canvas");
const PRINT_RESOLUTION = _app_options.AppOptions.get("printResolution") || 150;
const PRINT_UNITS = PRINT_RESOLUTION / 72.0;
canvas.width = Math.floor(size.width * PRINT_UNITS);
canvas.height = Math.floor(size.height * PRINT_UNITS);
canvas.style.width = Math.floor(size.width * _ui_utils.CSS_UNITS) + "px";
canvas.style.height = Math.floor(size.height * _ui_utils.CSS_UNITS) + "px";
const canvasWrapper = document.createElement("div");
canvasWrapper.appendChild(canvas);
printContainer.appendChild(canvasWrapper);
canvas.mozPrintCallback = function (obj) {
const ctx = obj.context;
ctx.save();
ctx.fillStyle = "rgb(255, 255, 255)";
ctx.fillRect(0, 0, canvas.width, canvas.height);
ctx.restore();
pdfDocument.getPage(pageNumber).then(function (pdfPage) {
const renderContext = {
canvasContext: ctx,
transform: [PRINT_UNITS, 0, 0, PRINT_UNITS, 0, 0],
viewport: pdfPage.getViewport({
scale: 1,
rotation: size.rotation
}),
intent: "print"
};
return pdfPage.render(renderContext).promise;
}).then(function () {
obj.done();
}, function (error) {
console.error(error);
if ("abort" in obj) {
obj.abort();
} else {
obj.done();
}
});
};
}
function FirefoxPrintService(pdfDocument, pagesOverview, printContainer) {
this.pdfDocument = pdfDocument;
this.pagesOverview = pagesOverview;
this.printContainer = printContainer;
}
FirefoxPrintService.prototype = {
layout() {
const {
pdfDocument,
pagesOverview,
printContainer
} = this;
const body = document.querySelector("body");
body.setAttribute("data-pdfjsprinting", true);
for (let i = 0, ii = pagesOverview.length; i < ii; ++i) {
composePage(pdfDocument, i + 1, pagesOverview[i], printContainer);
}
},
destroy() {
this.printContainer.textContent = "";
const body = document.querySelector("body");
body.removeAttribute("data-pdfjsprinting");
}
};
_app.PDFPrintServiceFactory.instance = {
get supportsPrinting() {
const canvas = document.createElement("canvas");
const value = "mozPrintCallback" in canvas;
return (0, _pdf.shadow)(this, "supportsPrinting", value);
},
createPrintService(pdfDocument, pagesOverview, printContainer) {
return new FirefoxPrintService(pdfDocument, pagesOverview, printContainer);
}
};