Robin Gareus dfa9f92e53 Fix tab-button state and cycling through tabs
The initial calls in `we_have_dependents()` was redundantly setting
all widows to "Hidden", before the actual state was known.

tabbable_state_change() is initially called for all Tabs:
ARDOUR_UI::setup_windows -> add_to_notebook() -> attach(),
or for detached windows Tabbable::set_state() -> hide_tab().

Step_up/down_through_tabs used window visibility to determine
candidates. This incorrectly considered detached visible tabs.
Detached windows cannot be cycled to.

This also addressed an issue where tab-buttons state was
incorrectly unset what unrelated tab state changed.
ImplicitActive of the currently active tab is now retained
when some other window is attached/detached.
2021-03-16 00:36:22 +01:00
2016-06-25 00:44:04 +02:00
2020-10-18 17:45:32 +02:00
2020-07-06 21:36:12 +02:00
2013-03-13 14:35:39 -04:00
2020-01-25 04:07:41 +01:00
2021-01-26 01:54:37 +01:00

Please see the Ardour web site at http://ardour.org/ for all documentation..

For information on building ardour: 
      
     http://ardour.org/development.html
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