Bug 221663 – -[WKWebView setDrawsBackground:] should be API

• Status: NEW
• Component: WebKit API

[Jonathan Deutsch]

This was an API in the WebView Legacy.

Applications like Tumult Hype [https://tumult.com/hype/] allow users to author content, which may inherently want a transparent background.  While the editor itself will probably use an opaque window, an export flow may want to export via -takeSnapshotWithConfiguration and use a transparent WKWebView to render into.

Right now, the only way to get a transparent WKWebView is something like:

if(@available(macOS 10.13, *)) {
	[webView setValue:@NO forKey:@"drawsBackground"];
} else {
	[webView setValue:@YES forKey:@"drawsTransparentBackground"];
}

I am surprised WebView was deprecated without providing this.

[Radar WebKit Bug Importer]

<rdar://problem/74423453>