Active color opacity level & gradient option

[annasimoniaine]

Added the option to set opacity level for the active color. Same changes as the first commit in pr #74 but from a new fork so there aren't any merge conflicts.
Also added the option to provide a list of colors to show a gradient instead of the active color background.

[codecov-commenter]

Codecov Report

Merging #80 (6ae5fd9) into master (2e88b51) will decrease coverage by 5.09%.
The diff coverage is 71.42%.

@@            Coverage Diff             @@
##           master      #80      +/-   ##
==========================================
- Coverage   96.87%   91.78%   -5.10%     
==========================================
  Files           1        1              
  Lines          64       73       +9     
==========================================
+ Hits           62       67       +5     
- Misses          2        6       +4     

Impacted Files	Coverage Δ
lib/bottom_navy_bar.dart	91.78% <71.42%> (-5.10%)	⬇️

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[pedromassango]

Hi @annasimoniaine
Thanks for this PR, will take a look shortly

[annasimoniaine]

@pedromassango have you had a chance to look at this?

[pedromassango]

Hi @annasimoniaine
Thank you so much for this PR.

Can you please assert that both activeColor and activeBackgroundColorGradient most not be provided? User must be able to provide only one of them.

A test would also be required to merge this PR to make this does not break in the future.
Thank you

[pedromassango]

duplicate

[annasimoniaine]

Hi @pedromassango I added the assert and a test. Let me know if I need to add anything else.

[pedromassango]

LGTM

Thanks for the PR, this should get merged soon.

[HugoHeneault]

Hello @pedromassango, and thanks @annasimoniaine :)

I'm quite interested in this one, will you merge soon?

Using

  bottom_navy_bar:
    git:
      url: https://github.com/annasimoniaine/bottom_navy_bar/
      ref: 6ae5fd

for now but don't like to depends on git for pubs ;)