Add keyboard shortcut to maximize library view

[esbrandt]

Fixes https://bugs.launchpad.net/mixxx/+bug/1430847

Possible extensions:

• Remove persist="true" so you cant get stuck with just a library on reboot
• Add to the View menu in the menu bar
• Add to the Midi Wizard

Thanks for reviewing.

[ywwg]

make sure to test all skins on a fresh (empty) config -- I had to make it unshow_big because it was defaulting to big, which would be very confusing for new users

[ywwg]

you will probably have to invert all of these with a connection modifier thing because unshow_big means "don't show the maximized library"

[esbrandt]

I`ll take a look.
Seems to work ok for now, but will test a bit more.

There is a logic error with the skin (in master), where you can end up with no widgets at all. Toggle the Library button and then Big Library. Not yet sure how to solve that.

[daschuer]

Shade: After returning from the big library samplers and effects are shown, even though the controls are disabled

Possible extensions:
sounds all reasonable

[daschuer]

Shade and Deere skins works like a charm now. Thank you. For me it is mege-able in this state. LGTM

In LateNight the behavior with the library button, is technically correct, but the user experience is not best when you hit space and the library is disabled.
@ywwg: Do we still need the library button or it is possible to replace it with an Auto Hide feature when there is no reasonable space for the small library. For me there is no use case for a entirely blank skin after hitting space.

[esbrandt]

make sure to test all skins on a fresh (empty) config -- I had to make it unshow_big because it was defaulting to big, which would be very confusing for new users

Good point.
I think there is a bug with LateNight in master that needs to be fixed first. When launching Mixxx for the 1st time, we default to LateNight without displaying a library at all. The following keys are in the fresh *.cfg:

...

[Library]
show_big_current 0

[Library]
show_current 0

...

[ywwg]

without displaying a library at all

is it in big mode, or is it just turned off?

[esbrandt]

Like so

[ywwg]

please update to a newer version, the Vinyl button hasn't been down there for a while.

[esbrandt]

please update to a newer version

Indeed, for whatever reason i was at r5042.
Updated to latest r5297, and the issue persists. Virgin install = No library with LateNight.

[ywwg]

hm, ok. latenight specifies a default of true for show_library, but maybe something else is turning it off? if you switch the default skin to Deere does the library work?

[esbrandt]

if you switch the default skin to Deere does the library work

That works as expected.
During 1st run when switching from LateNight with no library to Deere, the library is displayed there.

[ywwg]

oh, hah, #387

[rryan]

This is great :D

[rryan]

Merged manually (it had conflicts).