pdf.js/web/viewer_compatibility.js
Jonas Jenwald 5d14e68bec Enable the ESLint prefer-const rule in the web/ directory
Please find additional details about the ESLint rule at https://eslint.org/docs/rules/prefer-const

Note that this patch is generated automatically, by using the ESLint `--fix` argument, and will thus require some additional clean-up (which is done separately).
2019-12-27 01:03:58 +01:00

40 lines
1.4 KiB
JavaScript

/* Copyright 2018 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.
*/
const compatibilityParams = Object.create(null);
if (typeof PDFJSDev === "undefined" || PDFJSDev.test("GENERIC")) {
const userAgent =
(typeof navigator !== "undefined" && navigator.userAgent) || "";
const platform =
(typeof navigator !== "undefined" && navigator.platform) || "";
const maxTouchPoints =
(typeof navigator !== "undefined" && navigator.maxTouchPoints) || 1;
const isAndroid = /Android/.test(userAgent);
const isIOS =
/\b(iPad|iPhone|iPod)(?=;)/.test(userAgent) ||
(platform === "MacIntel" && maxTouchPoints > 1);
// Limit canvas size to 5 mega-pixels on mobile.
// Support: Android, iOS
(function checkCanvasSizeLimitation() {
if (isIOS || isAndroid) {
compatibilityParams.maxCanvasPixels = 5242880;
}
})();
}
exports.viewerCompatibilityParams = Object.freeze(compatibilityParams);