Now You See Me: Toggle window opacity based on theme background.

[Shadowfiend]

This is a more complete fix for #63, toggling a window's opacity setting based on the theme background's alpha channel.

I will confess to not having tested it, and I will confess I haven't tested vico before these changes either to see if it actually correctly implements transparent backgrounds. I'll give it more love if anyone gives any specific feedback here, but otherwise we'll stick to this solution until I hear from someone who actually needs it that it doesn't work ;)

[peteschaffner]

Sweet! My windows are finally opaque, the shadows look normal, and I can sleep sound at night.

I did run a quick test, though, and it looks like the window isn't drawing as non-opaque when intended ... of course I don't need this feature, so I'm not complaining ;)

I will close #63.

[Shadowfiend]

Did you check before these changes to see if transparent backgrounds worked?

[peteschaffner]

Oh yeah, sorry I forgot to mention that. I did check this and background opacity seemed to work just fine. Note, that to give a theme a transparent background, append the desired alpha [percentage] number to the background key under the settings dictionary like so:

<key>background</key>
<string>#FFFFFF90</string>

[Shadowfiend]

Yeah, that's what I did. I'll try to explore that some more either tonight or tomorrow.

[peteschaffner]

Cool. Don't worry about it too much ... says the guy who doesn't care about opacity :P

[Shadowfiend]

If you wouldn't mind giving that a quick shot, I think I fixed that, as well. If there's code in there to make opacity change, I would like for it to work :D

[peteschaffner]

Just tested both cases mentioned in your commit messages (switching to a semi-transparent theme and launching the app w/ a semi-transparent theme set) and both worked flawlessly for me.

Nice work!

[Shadowfiend]

Rock on! Going to merge this feller, too, then.

[peteschaffner]

You're on a mergin' roll!

[Shadowfiend]

Aww yeah.