зеркало из https://github.com/mozilla/gecko-dev.git
130 строки
4.1 KiB
JavaScript
130 строки
4.1 KiB
JavaScript
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this file,
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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"use strict";
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const EXPORTED_SYMBOLS = ["print"];
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const { XPCOMUtils } = ChromeUtils.import(
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"resource://gre/modules/XPCOMUtils.jsm"
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);
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XPCOMUtils.defineLazyModuleGetters(this, {
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clearInterval: "resource://gre/modules/Timer.jsm",
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OS: "resource://gre/modules/osfile.jsm",
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setInterval: "resource://gre/modules/Timer.jsm",
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assert: "chrome://marionette/content/assert.js",
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Log: "chrome://marionette/content/log.js",
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pprint: "chrome://marionette/content/format.js",
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});
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XPCOMUtils.defineLazyGetter(this, "logger", () => Log.get());
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this.print = {
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maxScaleValue: 2.0,
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minScaleValue: 0.1,
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letterPaperSizeCm: {
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width: 21.59,
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height: 27.94,
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},
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};
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print.addDefaultSettings = function(settings) {
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const {
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landscape = false,
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margin = {
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top: 1,
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bottom: 1,
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left: 1,
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right: 1,
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},
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page = print.letterPaperSizeCm,
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shrinkToFit = true,
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printBackground = false,
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scale = 1.0,
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} = settings;
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return { landscape, margin, page, shrinkToFit, printBackground, scale };
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};
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function getPrintSettings(settings, filePath) {
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const psService = Cc["@mozilla.org/gfx/printsettings-service;1"].getService(
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Ci.nsIPrintSettingsService
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);
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let cmToInches = cm => cm / 2.54;
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const printSettings = psService.newPrintSettings;
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printSettings.isInitializedFromPrinter = true;
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printSettings.isInitializedFromPrefs = true;
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printSettings.outputFormat = Ci.nsIPrintSettings.kOutputFormatPDF;
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printSettings.printerName = "marionette";
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printSettings.printSilent = true;
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printSettings.printToFile = true;
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printSettings.showPrintProgress = false;
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printSettings.toFileName = filePath;
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// Setting the paperSizeUnit to kPaperSizeMillimeters doesn't work on mac
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printSettings.paperSizeUnit = Ci.nsIPrintSettings.kPaperSizeInches;
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printSettings.paperWidth = cmToInches(settings.page.width);
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printSettings.paperHeight = cmToInches(settings.page.height);
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printSettings.marginBottom = cmToInches(settings.margin.bottom);
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printSettings.marginLeft = cmToInches(settings.margin.left);
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printSettings.marginRight = cmToInches(settings.margin.right);
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printSettings.marginTop = cmToInches(settings.margin.top);
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printSettings.printBGColors = settings.printBackground;
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printSettings.printBGImages = settings.printBackground;
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printSettings.scaling = settings.scale;
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printSettings.shrinkToFit = settings.shrinkToFit;
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printSettings.headerStrCenter = "";
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printSettings.headerStrLeft = "";
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printSettings.headerStrRight = "";
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printSettings.footerStrCenter = "";
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printSettings.footerStrLeft = "";
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printSettings.footerStrRight = "";
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// Override any os-specific unwriteable margins
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printSettings.unwriteableMarginTop = 0;
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printSettings.unwriteableMarginLeft = 0;
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printSettings.unwriteableMarginBottom = 0;
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printSettings.unwriteableMarginRight = 0;
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if (settings.landscape) {
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printSettings.orientation = Ci.nsIPrintSettings.kLandscapeOrientation;
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}
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return printSettings;
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}
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print.printToFile = async function(browser, outerWindowID, settings) {
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// Create a unique filename for the temporary PDF file
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const basePath = OS.Path.join(OS.Constants.Path.tmpDir, "marionette.pdf");
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const { file, path: filePath } = await OS.File.openUnique(basePath);
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await file.close();
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let printSettings = getPrintSettings(settings, filePath);
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await browser.print(outerWindowID, printSettings);
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// Bug 1603739 - With e10s enabled the promise returned by print() resolves
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// too early, which means the file hasn't been completely written.
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await new Promise(resolve => {
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const DELAY_CHECK_FILE_COMPLETELY_WRITTEN = 100;
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let lastSize = 0;
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const timerId = setInterval(async () => {
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const fileInfo = await OS.File.stat(filePath);
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if (lastSize > 0 && fileInfo.size == lastSize) {
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clearInterval(timerId);
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resolve();
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}
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lastSize = fileInfo.size;
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}, DELAY_CHECK_FILE_COMPLETELY_WRITTEN);
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});
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logger.debug(`PDF output written to ${filePath}`);
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return filePath;
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};
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