mermaid_flutter 0.3.0

Native Flutter renderer for mermaid_core: TextPainter text measurement and a CustomPainter that paints the mermaid render scene directly. 28 diagram types.

0.3.0

• Expose MermaidView.onSceneChanged, including fullscreen views, while retaining the existing geometry-only notification behavior for paint overrides.

• Require mermaid_core 0.3.0 for the configuration and layout fixes.

0.2.1

• Add rendered diagram examples to the README.

0.2.0

Behavior changes

• onNodeTap now fires only for diagram nodes (SceneGroupRole.node). Sequence frames, class namespaces, composite states, C4 boundaries, journey sections, and pie legend entries are no longer tap targets.
• Requires mermaid_core 0.2.0.

Changes

• Preserve requested monospace fonts and add platform symbol-font fallbacks for Unicode diagram labels.
• Add MermaidViewController with observable transforms, animated or immediate fit, and focus-by-node-id support.
• Add MermaidDiagram.onSceneChanged for access to post-layout scene geometry.
• Add onEdgeTap to MermaidDiagram and MermaidView, with precise stroke and label hit testing and stable Mermaid link indices.
• Add paint-only flowchart node and link overrides to MermaidDiagram and MermaidView; override changes reuse the parsed and laid-out base scene.
• Add desktop/web node hover callbacks, node-only cursors, and optional tooltip overlays to MermaidDiagram and MermaidView.
• Add opt-in node semantics with human labels, stable identifiers, transformed bounds, deterministic traversal, and accessible tap actions.
• Add headless renderToPng and renderSceneToPng APIs for Flutter runners.
• Add MaterialMermaidTheme.fromTheme and fromColorScheme to map Material colors and text roles to a light or dark MermaidTheme.
• Render gradient strokes and multiply-composited links consistently in ScenePainter and headless PNG output.
• Keep node, edge, hover, semantics, and scene callbacks working when paint-only overrides change.
• The built-in fullscreen popup uses the view's own padding, zoomStep, panStep, and showControls instead of falling back to the defaults.
• Refresh the pub.dev screenshots for the corrected layouts.

0.1.2

• Update mermaid_core to 0.1.2 for corrected flowchart, Event Modeling, Kanban, and C4 layouts.

0.1.1

• Make arrow controls move the viewport in the direction shown.
• Re-fit the diagram after viewport size changes, including when closing the fullscreen view.

0.1.0

Initial release.

• MermaidDiagram widget: parses, lays out and paints any mermaid_core diagram natively (no SVG/WebView).
• FlutterTextMeasurer (TextPainter-based) and ScenePainter (CustomPainter) for lower-level use.
• Live-editing support: keeps the last good render with an error overlay.
• Theme argument plus %%{init}%%/frontmatter overrides.