This PR is a large refactoring of the layout code to move as much of the
layout state logic as possible into a unified model class, with atoms
and derived atoms to notify the display logic of changes. It also fixes
some latent bugs in the node resize code, significantly speeds up
response times for resizing and dragging, and sets us up to fully
replace the React-DnD library in the future.
This will ensure that the webview cannot capture the pointer events and
disrupt the drag functionality.
This also fixes an issue where greedy and imprecise bounds calculations
could result in thrashing of the layoutState.pendingAction field, which
could cause the placeholder to flicker.
This also fixes issues where some React Effects that were supposed to be
debounced or throttled were being invoked too much. This is because
useEffect regenerates the callback when it is run, resulting in the
debounce or throttle never taking effect. Moving the throttled or
debounced logic to a separate callback solves this.
Adds the implementation for the "Magnify Block" context menu item. This
will pop a block out of the layout and bring it to the foreground.
This also cleans up some block styling to make radii more consistent.
<img width="814" alt="image"
src="https://github.com/user-attachments/assets/c81521e1-c91f-4bb5-9eec-ff0eda178268">
Adds resizability to the layout system.
Hovering in the margins of a block will highlight the available resize
handle and show a cursor indicating its resize direction. Dragging will
cause the resizing nodes to blur out and be replaced by an outline.
Releasing the handle will commit the new resize operation and cause the
underlying nodes to update to their new sizes.
We'll want to refactor this in the future to move all layout and resize
logic into a shared model that the TileLayout code can talk to, but
that's a future improvement. For now, this makes some compromises,
mainly that the logic is kind of distributed around.
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Co-authored-by: sawka <mike.sawka@gmail.com>
