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Diffstat (limited to 'src/utils/imageBlurrer.js')
-rw-r--r--src/utils/imageBlurrer.js92
1 files changed, 0 insertions, 92 deletions
diff --git a/src/utils/imageBlurrer.js b/src/utils/imageBlurrer.js
deleted file mode 100644
index 2a29e27d1..000000000
--- a/src/utils/imageBlurrer.js
+++ /dev/null
@@ -1,92 +0,0 @@
-/**
- *
- * @copyright Copyright (c) 2020, Daniel Calviño Sánchez (danxuliu@gmail.com)
- *
- * @license GNU AGPL version 3 or any later version
- *
- * This program 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, either version 3 of the
- * License, or (at your option) any later version.
- *
- * This program 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/>.
- *
- */
-
-import { generateFilePath } from '@nextcloud/router'
-
-let worker
-
-const pendingResults = {}
-let pendingResultsNextId = 0
-
-function loadWorker() {
- try {
- worker = new Worker(generateFilePath('spreed', '', 'js/image-blurrer-worker.js'))
- worker.onmessage = function(message) {
- const pendingResult = pendingResults[message.data.id]
- if (!pendingResult) {
- console.debug('No pending result for blurring image with id ' + message.data.id)
-
- return
- }
-
- pendingResult(message.data.blurredImageAsDataUrl)
-
- delete pendingResults[message.data.id]
- }
- } catch (exception) {
- worker = null
- console.error('Image blurrer worker could not be loaded', exception)
- }
-}
-
-function blurSync(image, width, height, blurRadius) {
- return new Promise((resolve, reject) => {
- const canvas = document.createElement('canvas')
- canvas.width = width
- canvas.height = height
-
- const context = canvas.getContext('2d')
- context.filter = `blur(${blurRadius}px)`
- context.drawImage(image, 0, 0, canvas.width, canvas.height)
-
- resolve(canvas.toDataURL())
- })
-}
-
-export default function blur(image, width, height, blurRadius) {
- if (typeof OffscreenCanvas === 'undefined') {
- return blurSync(image, width, height, blurRadius)
- }
-
- if (worker === undefined) {
- loadWorker()
- }
-
- if (!worker) {
- return blurSync(image, width, height, blurRadius)
- }
-
- const id = pendingResultsNextId
-
- pendingResultsNextId++
-
- return new Promise((resolve, reject) => {
- pendingResults[id] = resolve
-
- worker.postMessage({
- id: id,
- image: image,
- width: width,
- height: height,
- blurRadius: blurRadius,
- })
- })
-}