node_flow 0.2.0

React Flow-style node editor canvas for Flutter: pan/zoom viewport, draggable nodes, drag-to-connect edges, marquee selection, snap guides, and a minimap.

Changelog

0.2.0

• Per-edge accent colors: FlowEdge.accent (also settable in the constructor) paints one edge in its own color instead of FlowTheme.edge, so an app can highlight a traversed path, a failing branch, or a data type without borrowing selection for it.
• FlowController.setEdgeAccent(id, color) and FlowController.clearEdgeAccents() apply accents and repaint the edge layers through the new FlowController.edgeAccentVersion notifier, leaving the edge selection — and edgeSelectionVersion — untouched.
• Painting precedence is selected > accent > theme default: a selected edge still paints selected (and heavier) whatever its accent, and accents compose with the animated flowing dash unchanged.

0.1.1

• No functional changes. Infrastructure release: CI and automated publishing from GitHub Actions.

0.1.0

Initial release.

• NodeFlow<T, E> canvas widget: infinite pan/zoom viewport, dotted background grid, app-defined node visuals via nodeBuilder.
• FlowController<T, E>: nodes, edges, selection, marquee, viewport operations (fitView, zoomTo, centerOnNode), and callback seams for app-owned undo/persistence (onMoveCommitted, onDeleted, onEdgesDeleted).
• Node dragging with multi-selection, locked nodes, grid snap on commit, and Figma-style alignment snap guides.
• Ports and drag-to-connect with compatible-port detection, connection preview, and normalized onConnect requests.
• Edge styles: bezier, smoothstep, and straight, with optional animated flowing-dash rendering, hit-testing, and selection.
• Pannable minimap overlay with viewport indicator.
• Zero-dependency theming: explicit FlowTheme, ThemeData extension lookup, or built-in dark defaults.