Add missing PiP icons from web devel kit. Also add play/pause
icons at the right size and remove all workarounds/scaling
implemented or these two.
Playback icons are always two bars for pause and triangle for play,
so hopefully this will not be problematic, as this guaranties the
right size for them that Adwaita unfortunately cannot provide.
GTK does weird glitches when scale slider inside popover is dragged to the very end. Avoid that by putting small margins on both sides. It also looks better when its shorter a little bit.
The "controls.isMobile" was used incorrectly here as it holds value if
controls are in mobile mode, not if running on mobile screen.
Use those values from clapper main widget instead. This fixes incorrect
chapter popover placement on mobile screens.
Also handle fine-tune in CSS as this code path is hit multiple times
when starting/stopping slider drag.
Check and apply/remove TV mode UI on the fly when switching monitors.
This allows for e.g. having a mobile device connected to external big screen,
drag Clapper window from one screen to another and UI should automatically
adapt between mobile and TV modes without interrupting playback.
This also helps in situations where monitor size is not initially known
on window map #74.
Adwaita theme has unusually small media constrols icons, but other popular themes do not. Instead increasing those icons on every theme do it only for Adwaita where problem occurs.
We want to have a non-osd popover in the button that is placed on OSD headerbar. This is something unusual that Adwaita does not have, so create a custom style that will use common values from user system theme.
This avoids D&D controllers clash and allows to freely customize how maximize, minimize and close buttons work (differently for e.g. web application) and where are they placed
Adwaita does not have rounded corners yet, but will have soon. Enforce rounded corners in the app only for Adwaita to avoid bumping min required GTK version.
When GLArea gets a GL error it leaves user with nothing, but transparent background with error text in the middle. Make it look somewhat decent by drawing black background for the not working video widget.
