f964cbc961
Obviously userAgent checks aren't that great, since it's very easy to spoof, but it probably doesn't hurt to attempt to extend this (since it's limited to `GENERIC` builds). Besides, anyone using the default viewer can always set the `maxCanvasPixels` option to a value of their choosing.
39 lines
1.4 KiB
JavaScript
39 lines
1.4 KiB
JavaScript
/* Copyright 2018 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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let compatibilityParams = Object.create(null);
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if (typeof PDFJSDev === 'undefined' || PDFJSDev.test('GENERIC')) {
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const userAgent =
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(typeof navigator !== 'undefined' && navigator.userAgent) || '';
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const platform =
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(typeof navigator !== 'undefined' && navigator.platform) || '';
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const maxTouchPoints =
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(typeof navigator !== 'undefined' && navigator.maxTouchPoints) || 1;
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const isAndroid = /Android/.test(userAgent);
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const isIOS = /\b(iPad|iPhone|iPod)(?=;)/.test(userAgent) ||
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(platform === 'MacIntel' && maxTouchPoints > 1);
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// Limit canvas size to 5 mega-pixels on mobile.
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// Support: Android, iOS
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(function checkCanvasSizeLimitation() {
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if (isIOS || isAndroid) {
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compatibilityParams.maxCanvasPixels = 5242880;
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}
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})();
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}
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exports.viewerCompatibilityParams = Object.freeze(compatibilityParams);
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