duskmoon_mermaid_renderer

Flutter RenderObject-based Mermaid renderer for Duskmoon UI.

This package parses basic Mermaid flowcharts into an intermediate graph, computes a deterministic layout, builds render primitives, and paints diagrams directly with Flutter Canvas.

Status

Usage

const DmMermaidView(
  source: '''
flowchart LR
  A[Start] --> B{Decision}
  B -->|yes| C[OK]
''',
)

Stage APIs

final output = parseMermaid(source);
final layout = computeMermaidLayout(
  output.graph,
  const MermaidLayoutConfig(),
  const FlutterTextMeasurer(
    textDirection: TextDirection.ltr,
    textScaler: TextScaler.noScaling,
  ),
);
final scene = buildMermaidScene(layout, MermaidTheme.modern);

Limitations

The first release supports a small flowchart subset. It does not use SVG, WebView, JavaScript, Rust FFI, or platform-native rendering.

This package ports architecture and selected algorithms from mermaid-rs-renderer by 1jehuang, licensed under MIT.