Add YaruTitleBarStyle (hidden, background, normal)

[jpnurmi]

This allows creating "placeholder" title bars without any buttons but with full functionality i.e. double- and right-click handling.

appBar: const YaruWindowTitleBar(
  title: Text('Example'),
  style: YaruTitleBarStyle.background,
)

Fixes: #508

[jpnurmi]

Hold on, there's still a little puzzle to solve! We need to find a way to dynamically change it from normal to background depending on the MD layout. 😰

Screencast.from.2023-01-12.23-12-09.webm

[Feichtmeier]

Yep was about to post that it did not work as described when using your fork and this branch with pub upgrade :)
Alright no hurry cu tomorrow 👋 🌃

[jpnurmi]

Landscape mode is 👌

Screencast.from.2023-01-12.23-17-32.webm

[jpnurmi]

Ok, I have made the style themable in preparation to be able to specify the desired default for MD. I will create a separate PR for the MD changes but here's a sneak preview:

Screencast.from.2023-01-13.08-15-45.webm

[jpnurmi]

@Feichtmeier Are the names "hidden", "background", and "normal" sensible? I don't really like the name "background" but I'm having a hard time coming up with a nicer alternative.

• "empty" (it's not really empty because it can have title/leading/trailing)
• "plain"
• "minimal"
• "buttonless" (certainly describes what it does but sounds weird)

[Feichtmeier]

@jpnurmi how about undecorated for background?

[jpnurmi]

@Feichtmeier thanks, not bad! :)

[Feichtmeier]

I just know this word from our gnome experience 🦶 😄 🤷

[Feichtmeier]

Tried and works 💪 , thank you 👍

2023-01-13.09-07-10.mp4

[jpnurmi]

Impressive how you massaged it through the CI. My builds are still failing everywhere because of the Azure issues.

[Feichtmeier]