Module svg 

SVG export backend.

SvgRenderer implements the Renderer trait, so the exact same render path that draws the diagram on screen can be pointed at it to produce a standalone .svg. Geometry has a single source of truth; this module only translates the primitive calls into SVG nodes (built with the svg crate). Like the on-screen painter it holds a Palette and resolves each Swatch to a color at draw time — the canvas never sees an app-level role.

Text layout comes from the host’s TextLayout — the very engine that lays the diagram out on screen — so the rows a run breaks into, and where each row stands, are the screen’s. Each row is written as a <text> in the face’s own family, with the face embedded, so the export’s text is text: a viewer can select it, a PDF made from it carries it, a search finds it. The viewer shapes within a row; the row is ours.

Coordinates are world space and written out directly (no zoom/pan); the final <svg viewBox> frames whatever was drawn.

Structs

Ink 🔒

A palette stroke resolved to what the SVG states: a width and a color.

SvgRenderer

Functions

apply_fill 🔒

apply_stroke 🔒

Set stroke/stroke-width(+opacity); no-op when there’s no visible stroke.

color_hex 🔒

fill 🔒

fill/fill-opacity, or fill="none" when fully transparent.

font_face 🔒

The @font-face rule that embeds bytes under family, so a viewer without the face installed sets the text in it.

framed 🔒

The world rect an export frames: everything drawn, and a cell’s margin around it — or a unit square for a level that drew nothing.

point_list 🔒

Build the points attribute value for a polyline/polygon. Vec<(f32, f32)> serializes to "x y x y …", which SVG accepts.

text_element 🔒

One row as a <text> at its pen, turned about it by angle. Written by hand because the svg crate breaks an element’s content onto lines of its own, which xml:space="preserve" would set as spaces.