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v0 source pure

Package svg draws the small on-chain SVGs of GnoRadio (covers, tickets, charts) with a strings.Builder, which keeps v...

Overview

Package svg draws the small on-chain SVGs of GnoRadio (covers, tickets, charts) with a strings.Builder, which keeps vm/qrender gas low.

Functions 4

func Clip 

1func Clip(s string, n int) string
source

Clip shortens s to n runes, ending with an ellipsis.

func Escape 

1func Escape(s string) string
source

Escape makes text safe inside SVG: titles and names may hold '&'.

func FNV 

1func FNV(s string) uint32
source

FNV is the 32-bit FNV-1a hash, used to pick a composition from a title.

func New 

1func New(w, h int, css string) *Canvas
source

New opens a w×h SVG whose <style> holds css.

Types 1

type Canvas

struct 
1type Canvas struct{ b strings.Builder }
source

Methods on Canvas

func Circle

method on Canvas 
1func (c *Canvas) Circle(cx, cy, r int, fill string)
source

func Data

method on Canvas 
1func (c *Canvas) Data() string
source

Data closes the SVG and returns it as a base64 data URI.

func Image

method on Canvas 
1func (c *Canvas) Image(alt string) string
source

Image closes the SVG and returns it as a markdown image.

func Raw

method on Canvas 
1func (c *Canvas) Raw(s string)
source

func Rect

method on Canvas 
1func (c *Canvas) Rect(x, y, w, h, rx int, fill, extra string)
source

Rect draws a rectangle; extra holds more attributes, e.g. ` mask="url(#h)"`.

func Text

method on Canvas 
1func (c *Canvas) Text(x, y int, s, fill string, size int, attrs string)
source

Text writes s escaped; attrs follows font-size, e.g. ` text-anchor="end" class="m"`.

Imports 4

Source Files 2