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utils.js
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/* * Copyright (C) 2020 - present Instructure, Inc. * * This file is part of Canvas. * * Canvas is free software: you can redistribute it and/or modify it under * the terms of the GNU Affero General Public License as published by the Free * Software Foundation, version 3 of the License. * * Canvas is distributed in the hope that it will be useful, but WITHOUT ANY * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR * A PARTICULAR PURPOSE. See the GNU Affero General Public License for more * details. * * You should have received a copy of the GNU Affero General Public License along * with this program. If not, see <http://www.gnu.org/licenses/>. */ export const AUDIO_PLAYER_SIZE = {width: '320px', height: '14.25rem'} export const NON_PREVIEWABLE_TYPES = [ 'audio/x-ms-wma', 'video/avi', 'video/x-msvideo', 'video/x-ms-wma', 'video/x-ms-wmv' ] export const isPreviewable = type => !NON_PREVIEWABLE_TYPES.includes(type) export function isVideo(type) { return /^video/.test(type) } export function isAudio(type) { return /^audio/.test(type) } // return the desired size of the video player in CSS units // constrained to the container's size // If the container is larger than the video, will stretch it to fill // the available space export function sizeMediaPlayer(player, type, container) { if (isAudio(type)) { return AUDIO_PLAYER_SIZE } const sz = { width: player.videoWidth, height: player.videoHeight } if (container?.width && container?.height) { if (sz.width > sz.height) { sz.width = container.width sz.height = (player.videoHeight / player.videoWidth) * sz.width } else { sz.height = container.height sz.width = (player.videoWidth / player.videoHeight) * sz.height } if (sz.height > container.height) { sz.width *= container.height / sz.height sz.height = container.height } } sz.width = `${Math.round(sz.width)}px` sz.height = `${Math.round(sz.height)}px` return sz }