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

[Angelo Varlotta]

Hello all,
If this could get fixed at some point, I'd be more than happy. Thank you
all for the time and effort you put into this great editor.

Angelo

Allan Odgaard wrote on 30/06/2019 21:58:
>
> On 10 Apr 2019, at 18:51, Ronald Wampler wrote:
>
>     I can confirm that transparency no longer works in Mojave using
>     any releases
>     that are linked against the 10.14 SDK. It appears the current
>     method (setting
>     the window to not be opaque and the text view to NSColor
>     clearColor) doesn't
>     work now.
>
> The problem seems to be that when linking with the 10.14 SDK, views
> will draw into their own separate layers, so we can no longer “erase”
> the background with |NSColor.clearColor| to make a subset of the
> window transparent (as we no longer erase into the shared buffer for
> enture full window).
>
> Instead we must ensure that all ancestor views are transparent, which
> would include setting |backgroundColor| to |NSColor.clearColor| for
> our window, and then making sure that all other views in the window
> have an opaque background.
>
> It might be doable, but a quick test showed a problem with the file
> browser, as it is using an |NSVisualEffectView|. It might work if we
> put a view behind the |NSVisualEffectView| to draw the window
> background, but I’m hesitant to pursue this, as the less assumptions
> we make about how these views work, the better.
>
> There is the ability to use an |NSVisualEffectView| behind the text
> view, but that would be a different kind of transparency, unlikely to
> be compatible with the themes currently using alpha.
>

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