Add swayc_change_layout function, which changes either layout or
workspace_layout, depending on the container type. Workspace being
always L_HORIZ makes this much more i3-compatible.
This patch makes it possible to move views between outputs using the
`move left|right|up|down` commands.
It behaves similar to i3 with one important difference. The focus will
always follow the view being moved, unlike i3 where the focus doesn't
always follow the view to a new output (I assume that's a bug in i3).
`vertical` and `horizontal` should be swapped.
If border_left and border_right were set to 0, the vertical borders
instead of the horizontal borders would be hidden.
i3 handles this command equally.
Replace `update_view_border()` with `update_container_border()`. The latter
should handle both the case where the container is a view or if the container
has children.
When titlebar is hidden, top border of the topmost view inside
tabbed/stacked container will not be drawn. This is changed in layout.c
On the other hand, top border should be drawn sometimes, for example
when titlebar is hidden on a view that is not the topmost inside
tabbed/stacked container. This is changed in border.c
This patch makes sure to clear the border buffer of fullscreen view so
the border doesn't get drawn behind a fullscreen view, which would be
visible if the view was transparent.
The borders are implemented as a surface/buffer attached to each view
which is sent to and rendered by wlc in the view_pre_render callback.
All the drawing logic is handled in sway/border.c and all the logic for
calculating the geometry of the border/view is handled in
`update_geometry` in sway/layout.c (same place as gaps are calculated).