Changed the mode of CircularProgressIndicator to adaptive

[danger-ahead]

fixes #680

[diegotori]

LGTM. Will have to run your changes locally before I merge.

[danger-ahead]

LGTM. Will have to run your changes locally before I merge.

Thanks!

[binSaed]

LGTM

[danger-ahead]

@binSaed @diegotori is this PR ready to merge?

[diegotori]

@binSaed @diegotori is this PR ready to merge?

I'll review it in the next couple of days, or this weekend.

[diegotori]

@danger-ahead quick question. How does CircularProgressIndicator.adaptive() handle it's color on iOS when uses the Cupertino one?

In other words, documentation might be necessary for CupertinoControls in order to properly theme that value, or at least briefly explain what a user might do to change the indicator color on iOS.

Long story short, that adaptive version ignores valueColor and friends on iOS.

[hamishjohnson]

@danger-ahead quick question. How does CircularProgressIndicator.adaptive() handle it's color on iOS when uses the Cupertino one?

In other words, documentation might be necessary for CupertinoControls in order to properly theme that value, or at least briefly explain what a user might do to change the indicator color on iOS.

Long story short, that adaptive version ignores valueColor and friends on iOS.

On iOS, there is only one color and you can update it with background color.

CircularProgressIndicator.adaptive(
    backgroundColor: Colors.red,
  ),