Transparent background WKWebView (NSView)

appkit, macos, swift

Solution

It was not supported, then they fixed it:

https://bugs.webkit.org/show_bug.cgi?id=134779

The way to make it transparent is to:

myWebView.opaque = false

Problem

I am building a Mac application using Swift. Therefor, I want to make a WKWebView transparent, so it shows the text of the loaded HTML, but the background of my underlaying NSWindow is visible. I tried ``` webView.layer?.backgroundColor = NSColor.clearColor().CGColor; ``` which hadn't any effect. WKWebView inherits from NSView, but I don't know if this helps. Another solution would be to insert a NSVisualEffectView as the background of the WebView, but I don't know how to accomplish that, either!

Original source