Reimplement resize code (#1990)

* server/floating_panes: Start removing `unwrap`s

* server/panes: Remove more `unwrap`s

in floating panes code.

* utils/data: Unify `Direction` type

which was previously present in multiple locations.
Also start working on a new Resize Method (type `ResizeStrategy`), to
remove code duplication in the resize code.

* server: Implement new resize handling

with the `ResizeStrategy` type. Add a new action with the ability to
invoke it from the CLI. Take care to maintain backwards-compatibility in
terms of configuring the new resize mode.

* utils/layout: Add conversion for SplitDirection

from `data::Direction`.

* utils/data: Add impl for `Direction`

* server/panes: Rework tiled pane resizing

but it's currently still broken in a few regards and misses ability to
perform "regular" increase/decrease.

* server/panes/tiled_panes: Add debug assertion

to catch if the total area of all panes (in percent) is different from
100.0 at some point.

* server/panes/tiled/grid: Fix resize bug

caused by the fact that neighboring plugin panes previously weren't
filtered from resize operations, even though they cannot be resized at
all.

* utils/data: Add `invert` for `Resize`

* utils/data: Add member to `ResizeStrategy`

that controls whether we invert resize behavior when increasing size
towards a bounadry. This maintains current behavior.

* server/screen: Handle new attribute

in `ResizeStrategy`

* server/panes/resizer: Return `anyhow::Error`

* server/panes/tiled: Implement resize increase/decrease

without specifying a direction (towards all possible directions).
Currently broken in some cases.

* server/pane/tiled/grid: Don't return early

to preserve resize debug assertions.

* server/pane/tiled/grid: Fix resize bug

caused by checking for the wrong alignments in some cases. Also refactor
the code for looking up aligned panes.

* server/panes/tiled/grid: Cleanup code

and remove log statements and unused functions.

* server/panes/float/grid: Invert resize

if the floating pane is hitting a boundary already.

* plugins/status-bar: Add hints for new resize

* server: Use new resize method

* server: Fix tests

with new functions and result types.

* apply rustfmt

* utils: Apply rustfmt

* server/panes/floating: Fix resize increase

behavior which would previously, upon hitting a boundary, cause the pane
to invert the resize operation, which is wrong. Instead, it now does not
resize floating panes on an undirected resize "increase" in directions
where it hits boundaries.

* server/panes/tiled: Use correct resize increments

The values for the resize increments were previously wrong, causing many
of the tests to fail.

* server/panes/tiled: Fix resize checks

to correctly consider fixed-size panes.

* utils/assets/config: Update default config

with new keybindings for resize mode.

* server/panes/tiled: Fix resize check

* server/panes/tiled: Use shortener for `Direction`

type in `change_pane_size` function.

* server/panes/tiled: Restore resize behavior

for undirected resizes, to the way it was before this PR.

* server/panes/floating: Fix resize increment

for undirected resizes

* utils/data: Fix doctest

* utils: Fix test snapshots

for tests working with the default config

* changelog: Add PR #1990

1 files changed, 1 insertions, 0 deletions

diff --git a/CHANGELOG.md b/CHANGELOG.md
index da66bf973..f87e572f2 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -27,6 +27,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
 * refactor(messaging): reduce extraneous cross-thread messaging (https://github.com/zellij-org/zellij/pull/1996)
 * errors: preserve caller location in `to_log` (https://github.com/zellij-org/zellij/pull/1994)
 * feat: show loading screen on startup (https://github.com/zellij-org/zellij/pull/1997)
+* feat: Allow "reducing" resizes, refactor resizing code (https://github.com/zellij-org/zellij/pull/1990)
 
 ## [0.33.0] - 2022-11-10