`svg`

A DrawTarget that accumulates resolution-independent SVG markup.

The surface implements every DrawTarget method. It is not a general-purpose SVG builder: linear and radial gradients on rects and paths only (a conic gradient has no SVG element and stays raster-only), rectangle and path clips as nested <g clip-path> wrappers, and no groups beyond those and begin_annotated_group.

The transform state (save/restore, translate/rotate/scale) is carried as a transform="matrix(a b c d e f)" attribute on each element drawn while a transform is set, rather than as nested <g> groups: an attribute per element cannot interleave badly with the annotated groups, and restore has nothing to close. draw_text’s own rotation composes after it in the same attribute. SVG applies stroke-width in the element’s user space, so a stroke under a scale widens with it, as it does on Canvas.

set_blend_mode is carried the same way, as a style="mix-blend-mode:..." attribute. CSS names the separable and non-separable blend modes and nothing else, so the Porter-Duff operators past the default – SOURCE, DESTINATION_IN, XOR and the rest – emit no attribute and render as ordinary source-over.

Structs

SvgCanvas: Accumulates SVG body markup for a width x height document. width/height are public fields, as on Canvas.

Functions

write_svg