"Static" tabbed pager + extra customization

[BitKaitsu]

I have an app where I wanted to use the tabbed pager as an unscrollable version that had tabs of equal width that filled the view. However, that was not possible and I did not want to break the visual style of the app as I was using this tabbed pager elsewhere in the app. The alternatives for Xamarin.iOS didn't seem good enough.

As a result, I added the option to make the tabbed pager static as in the tab bar cannot be scrolled and the tabs are made to fit inside the view and fill it. Naturally, this limits the amount of tabs one can have with the static version but not using too many tabs is up to the user. If the text does fit inside the tab, it is truncated and the user can choose to decrease the font size.

I also made it possible to change the spacing between the tabs and to add padding to the tabs as I wanted to have some extra customization options instead of simply setting the spacing for the static version to zero.

I think this is what people in #6 also wanted.

[Cheesebaron]

Hey @BitKaitsu thank you for your Pull Request, will have a look at it asap. I have skimmed the commits and it seems OK to me. Give me some time to try it on a device and see how it works.

Don't worry about the build error, it is not your fault.

[BitKaitsu]

I tested this myself using the sample. I commented out all but 3 view controllers, added TabSpacing = 5; and StaticTabBar = true; to ViewDidLoad(), and changed GetViewControllerIcon to return null. It works fine with the icons as well, but with the font sizes in the sample there wasn't much space for the icons.

[Cheesebaron]

Would it be an idea to provide some way of scaling the font automatically to what fits on the screen? Or provide a way to truncate the strings?

[BitKaitsu]

The strings truncate and show the ellipsis, if they don't fit inside the button. As for the automatically scaling font, I personally did not find it necessary as you can change the font size manually to make the text fit.

It's definitely possible to also have the font scale automatically, but it would likely result in the font size changing when rotating the device.

[Cheesebaron]

Looks good to me. Will merge when the build has finished