[TxMt] Re: No transparency for iPlastic theme in Mojave

[Allan Odgaard]

On 22 Sep 2019, at 11:15, Angelo Varlotta wrote:

> If this could get fixed at some point, I'd be more than happy. Thank 
> you

Some more experimentation and it’s even more problematic than 
suggested in my original email, because if we make the window 
transparent, as required to have one of the subviews draw with alpha on 
top of what’s behind the window, the content of that subview will 
affect the window’s shadow.

So effectively text drawn in the view gets a shadow, and worse, the 
shadow is not updated (unless programmatically requested), so changing 
the text will leave the shadow from the original text.

As mentioned, there is the option of placing a `NSVisualEffectsView` 
behind the text view, but this gives a (very) blurred background. I 
don’t know if the desire for alpha is to be able to read/see what’s 
behind, because in that case, `NSVisualEffectsView` is not a good 
option.

It *might* also be possible to simply capture the content behind the 
window and draw, but I have no idea about APIs for that and this is not 
something I plan to look into, but someone else is more than welcome to.
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