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staltz /
Last active Feb 25, 2020
The introduction to Reactive Programming you've been missing
donavon / getThumbnailFromWebView.js
Last active Mar 22, 2016
`transformImageStream` is a WinJS (Windows 8) utility to transform an image stream. The sample code to get a snapshot from a WebView control requires Windows 8.1.
View getThumbnailFromWebView.js
// Takes a snapshot of WebView control (Windows 8.1) and returns a thumbnail URL.
function getThumbnailFromWebView(webviewControl, width, height) {
return capturePreviewToBlobAsync(webviewControl).then(function (completeEvent) {
var blob =;
var streamIn = blob.msDetachStream();
var Imaging = Windows.Graphics.Imaging;
var transform = new Imaging.BitmapTransform();
transform.scaledHeight = height;
transform.scaledWidth = width;
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