Jonas Ådahl authored Jul 06, 2023 and Vlad Zahorodnii committed Mar 25, 2025

An edge constraint is an complementery state to the tiled state, meaning
that it's not only tiled, but constrained in a way that it can't resize
in that direction.

This typically means that the constrained edge is tiled against a
monitor edge. An example configuration is two windows tiled next to each
other on a single monitor. Together they cover the whole work area.

The left window would have the following tiled and edge constraint
state:

  [ tiled_top, tiled_right, tiled_bottom, tiled_left,
    constrained_top, constrained_bottom, constrained_left ]

while the right window would have the following:

  [ tiled_top, tiled_right, tiled_bottom, tiled_left,
    constrained_top, constrained_bottom, constrained_right ]

This aims to replace and deprecate the `gtk_surface1.configure_edges`
event and the `gtk_surface1.edge_constraint` enum.

Signed-off-by: Jonas Ådahl <jadahl@gmail.com>