The window in front of every container is see-through, unless its container has
the focus on the focused monitor, so that the window being worked in stands out.
The opacity of a window is a property KWin has: komorebi sets it through the
bridge, as a fraction of 255, and KWin draws the window so. The window manager
keeps the opacity it gave each window and, after every event and message, sends
only the difference, makes a window opaque again when it should no longer be
see-through, and makes every one opaque when it stops. Windows an ignore rule
covers, and workspaces that do not tile, are left as they are.
The patched border effect already draws a window again when its opacity changes,
so the border follows it. komorebic gets transparency, transparency-alpha and
toggle-transparency, and the state of the daemon says what the settings are.
vm-features checks the pixels in the middle of a focused window and of one that
is not.
A monocled window is opaque on the focused monitor and see-through on another.
komorebi.json takes transparency, transparency_alpha and
transparency_ignore_rules.
