Crate chartml_render 

Server-side ChartML rendering: spec → ChartElement → SVG → PNG.

This crate provides the final rendering step for chartml-rs, converting ChartElement trees into static PNG images without requiring a browser, DOM, or JavaScript runtime.

Features

• SVG serialization (always available): converts ChartElement trees to SVG strings
• PNG rasterization (requires rasterize feature, enabled by default): converts SVG to PNG

Usage

use chartml_core::ChartML;
use chartml_render::render_to_png;

let chartml = ChartML::new();
// ... register renderers ...

let yaml = r#"
type: chart
version: 1
data:
  provider: inline
  rows:
    - { x: "A", y: 10 }
    - { x: "B", y: 20 }
visualize:
  type: bar
  columns: x
  rows: y
"#;

let png_bytes = render_to_png(&chartml, yaml, 800, 400, 72).unwrap();

Re-exports

pub use error::RenderError;

pub use rasterize::svg_to_png;

pub use svg::element_to_svg;

Modules

error

rasterize

SVG string → PNG bytes rasterization using resvg.

svg

ChartElement tree → SVG string serialization.

Functions

element_to_png

Render a pre-built ChartElement tree to PNG bytes.

render_to_png

Render a ChartML YAML spec to PNG bytes (synchronous).

render_to_png_async

Render a ChartML YAML spec to PNG bytes (async).