This commit improves the handling of tabs in the samll deck layout. We
are now saving the selected tabs index in the newly added
"LayoutRepository" so that we can reuse the selected tab when a user
switches between the small and large layout. We can now also set the tab
which should be initially selected in the large layout when a user
selects a column in the navigation rail. Last but not least we can also
reset the initial tab index when a user selects a new deck in the
settings, so that we always display the first column instead of the
column with the same index as it was selected in the previous deck.
It is now possible to play videos from toots within FeedDeck. For that
we are using the "madia_kit" package, which is already used for the
Podcast player on Windows and Linux.
The videos from a toot are saved within the "options.videos" field of an
item next to the "options.media" field. In the "ItemDetailsMastodon"
widget we are then checking if this field is present and contains a list
of video urls. These urls can then be played via the "ItemVideos"
widget.
When we used the AppBar widget we did not specify the "centerTitle"
property, so that the title was aligned within the default of the
platform. This means on iOS and macOS the title was centered, but on
Android, Windows and Linux the title was aligned on the left side.
This wasn't intended and we want to have the same style on all
Platforms, so that the title is now centered on all Platforms like it
was already done on iOS and macOS.
As reported in #25 the list of sources in a column can not be scrolled
vertically when there are a lot of sources which can not all be
displayed within the existing space.
This problem only occures when a user has no touch device or trackpad,
e.g. on Linux, Windows or the Web.
To fix this we changed the scroll behaviour in the app to allow
scrolling via drag gestures. For the reported case this means the list
of sources can be dragged to the right or left side to view all the
other sources which are hidden.
