feat: support Frappe Charts charting library #546
Description
Summary
Add support for Frappe Charts as a third-party charting library that maidr can work with.
Background
Frappe Charts is a lightweight, open-source SVG charting library with zero dependencies, inspired by GitHub's contribution chart. It is popular for its simplicity and clean API. chart2music provides a Frappe Charts integration example.
What This Involves
- Binder/Adapter: Create an adapter that extracts data from Frappe Charts instances and generates the MAIDR JSON schema.
- SVG Highlighting: Frappe Charts renders standard SVG elements, making CSS selector-based highlighting straightforward.
- Chart Types: Frappe Charts supports line, bar, mixed (axis), scatter (dot), pie, percentage, and heatmap charts.
Considerations
- Frappe Charts has a simple, well-documented API making data extraction straightforward.
- chart2music notes that Frappe Charts does not fully support external visual syncing via its API.
- The library is lightweight and has minimal chart types, so the integration scope is smaller than libraries like D3 or Highcharts.
Reference
- chart2music Frappe Charts example: https://codepen.io/chart2music/full/QWmrWWE
- Frappe Charts: https://frappe.io/charts