voo_node_canvas 0.1.4

A node-based canvas widget for creating visual node graphs with draggable nodes and connections

Changelog

All notable changes to this project will be documented in this file.

The format is based on Keep a Changelog, and this project adheres to Semantic Versioning.

0.1.4 - 2026-01-27

Added

• Native node grouping with NodeGroup entity
• GroupPainter and GroupLayer for visual group rendering (rounded rect, dashed border, label)
• Controller operations: createGroup, removeGroup, updateGroup, addNodeToGroup, removeNodeFromGroup
• Group selection: selectGroup, deselectAllGroups
• Group dragging: moves all member nodes together with independent snap-to-grid
• onGroupTap and onGroupMoved callbacks on VooNodeCanvas
• Ctrl/Cmd+G keyboard shortcut to group selected nodes
• JSON serialization for groups (toJson/fromJson)
• Undo/redo support for all structural group operations
• Delete key removes selected groups
• Nodes removed from groups when individually deleted

0.1.3 - 2025-11-26

Fixed

• Fixed hit testing for nodes and ports positioned far from the canvas origin
• Nodes and ports now remain interactive regardless of zoom level or position
• Fixed node dragging lag when zoomed out by using offset-based positioning
• Added direct pointer handling that bypasses Flutter's constraint-limited hit testing
• Added manual hover tracking for nodes and ports at any canvas position
• Transform alignment now correctly uses top-left origin for coordinate transforms

0.1.2 - 2025-11-26

Added

• Undo/redo support with configurable history size (default 50 states)
• Keyboard shortcuts: Ctrl/Cmd+Z (undo), Ctrl/Cmd+Shift+Z or Ctrl/Cmd+Y (redo)
• Marquee selection with Shift+drag to select multiple nodes and connections
• Connection clicking and selection support
• Ctrl/Cmd+A to select all nodes
• Shift+click for multi-select on nodes
• Port color customization with highlightColor and connectedColor on NodePort
• Port hover effects with animated visual feedback
• portHitTolerance and portHighlightColor config options
• connectionHitTolerance config for easier connection clicking

0.1.1 - 2025-11-23

Fixed

• Snap-to-grid now works smoothly by tracking raw position during drag operations
• Connection line now follows cursor correctly at all zoom levels
• Node dragging responds correctly at all zoom levels

0.0.1 - 2024-11-23

Added

• Initial release of voo_node_canvas
• Infinite canvas with pan and zoom support
• Draggable nodes with customizable content
• Input/output ports for node connections
• Bezier curve connections between nodes
• Grid background with snap-to-grid support
• Canvas configuration options
• Canvas controller for state management