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Fix scrolling on mobile devices #308

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Merged
merged 1 commit into from
Dec 20, 2019
Merged

Fix scrolling on mobile devices #308

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8 changes: 7 additions & 1 deletion Source/AlphaTab.JavaScript/UI/BrowserUiFacade.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -774,7 +774,13 @@ public IContainer GetScrollContainer()
var nodeName = scrollElement.NodeName.ToLowerCase();
if (nodeName == "html" || nodeName == "body")
{
scrollElement = Browser.Document.DocumentElement;
// Some mobile browsers cannot scroll on html, we must scroll on body instead
// http://blog.jonathanargentiero.com/jquery-scrolltop-not-working-on-mobile-devices-iphone-ipad-android-phones/
// https://github.com/CoderLine/alphaTab/issues/205
string userAgent = Browser.Navigator.UserAgent;
scrollElement = userAgent.Match("((iPod|iPhone|iPad|Android))").IsTruthy()
? Browser.Document.Body
: Browser.Document.DocumentElement;
}

return new HtmlElementContainer(scrollElement);
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