Module divider 

Thin draggable divider widgets for resizable panes.

Two flavours are provided:

• vertical_divider — a narrow vertical bar that the user can drag left/right to resize adjacent horizontal panes.
• horizontal_divider — a narrow horizontal bar that the user can drag up/down to resize adjacent vertical panes.

Both are built from mouse_area + container so they emit the standard PaneDragStart / PaneDragStartH messages on press. The hit-zone is deliberately wider than the visible rule so that grabbing the divider with the mouse is comfortable. A subtle background highlight appears on hover to signal that the divider is interactive.

Functions

horizontal_divider

A thin horizontal divider that starts a drag on target when pressed.

vertical_divider

A thin vertical divider that starts a drag on target when pressed.