flutter_circle_pack_chart 3.0.1

A powerful and interactive circle pack chart (circular treemap) library for Flutter.

3.0.1

• Internal: Removed redundant imports to improve pub.dev analysis score.

3.0.0

• Breaking Change: "Widget as Root" Architecture. Removed the requirement for a mandatory root CircleNode wrapper. The widget now acts as the hierarchy's root.
• Breaking Change: FlutterCirclePackChart constructor refactor: removed root parameter, added children (List
• Breaking Change: FlutterCirclePackChartController refactor: now initializes with children and title instead of a single root node.
• New Feature: Added CirclePacker.packList for direct packing of node lists within a virtual root.
• Enhancement: Navigation logic now supports a "virtual root" (Top Level) state where the focused node is null.
• Updated all examples and documentation to reflect the new simplified API.

2.1.0

• New Feature: Interactive Legend. Users can now tap on legend items to drill down into sub-categories.
• UI Refinement: Added visual cues (chevron icons) and hover/tap states to the legend to indicate interactivity.
• Improved legend layout with expanded labels to prevent truncation in the middle of long names.

2.0.1

• Bug Fix: Implemented linear canvas anti-scaling to eliminate vertical jitter and "jumping" of labels during zoom animations.
• UI Refinement: Switched to a mathematically stable slot-based layout for multi-line labels, ensuring perfect centering and zero overlap.
• UI Refinement: Tightened dynamic opacity range (0.85-1.0) for a more solid and consistent visual style.
• Example Update: Restored and updated the Africa category in the World Population example.

2.0.0

• Breaking Change: Refactored CircleNode data model. Renamed upperLabel to displayValue and reordered constructor arguments (value now comes before displayValue).
• New Feature: Added showValue and showLabels flags to FlutterCirclePackChart for granular display control.
• New Feature: Implemented Dynamic Opacity: Circles now automatically scale their opacity (0.85 - 1.0) based on their relative values to highlight data importance.
• Typographic Refinement: Implemented independent "anti-scaling" for value and label lines, ensuring perfect sharpness and a balanced visual hierarchy.
• Refactored example app with three distinct demo categories: Countries, Budget, and Stress Tests.

1.0.4

• Implemented "Deck of Cards" drawing order: larger circles now stay on top of smaller ones during all transitions.
• Enhanced animation aesthetics, allowing smaller circles to naturally emerge from or hide behind larger ones.

1.0.3

• Perfected symmetry of the implosion (drill-out) animation for a more natural feel.
• Fixed visual overlap during transitions by ensuring children merge fully before the parent reappears.

1.0.2

• Simplify installation instructions in README to be version-agnostic.

1.0.1

• Update README with official pub.dev installation instructions.
• Link to the live demo website in README.

1.0.0

• Initial release of FlutterCirclePackChart.
• Core recursive circle packing algorithm.
• Immersive drill-down and back-navigation interactivity.
• Symmetric explosion/implosion animations for smooth transitions.
• Professional label system with anti-scaling and uniform sizing.
• Built-in vertical legend component.
• Fully responsive layout supporting all screen resolutions.