terminal/doc/cascadia
Mike Griese 74f11b8203
Enable Vintage Opacity (#11180)
## Summary of the Pull Request
![603-final](https://user-images.githubusercontent.com/18356694/132585665-afed3210-257a-4fee-9b43-4273a0f5cf69.gif)

Adds support for vintage style opacity, on Windows 11+. The API we're using for this exists since the time immemorial, but there's a bug in XAML Islands that prevents it from working right until Windows 11 (which we're working on backporting).

Replaces the `acrylicOpacity` setting with `opacity`, which is a uint between 0 and 100 (inclusive), default to 100.

`useAcrylic` now controls whether acrylic is used or not. Setting an opacity < 100 with `"useAcrylic": false` will use vintage style opacity.

Mouse wheeling adjusts opacity. Whether acrylic is used or not is dependent upon `useAcrylic`.

`opacity` will stealthily default to 50 if `useAcrylic:true` is set.

## PR Checklist
* [x] Closes #603
* [x] I work here
* [x] Tests added/passed
* [x] https://github.com/MicrosoftDocs/terminal/pull/416

## Detailed Description of the Pull Request / Additional comments

Opacity was moved to AppearanceConfig. In the future, I have a mind to allow unfocused acrylic, so that'll be important then. 

## Validation Steps Performed
_just look at it_
2021-09-20 17:08:13 +00:00
..
AddASetting.md Introduce a basic ApplicationState class (#10513) 2021-06-30 02:25:44 +02:00
Json-Utility-API.md Rework JsonUtils' optional handling to let Converters see null (#8175) 2020-11-09 15:13:02 -08:00
profiles.schema.json Enable Vintage Opacity (#11180) 2021-09-20 17:08:13 +00:00
SettingsSchema.md Replace the "user docs" with references to the real docs (#7649) 2020-09-17 09:38:01 -07:00
Unittesting-CppWinRT-Xaml.md Upgrade Windows SDK to 19041 (#10118) 2021-05-20 16:04:25 +00:00