Module: SvgConform::Constants

Defined in:

lib/svg_conform/constants.rb

Constant Summary

SVG_ELEMENTS =

SVG elements allowed in SVG 1.2 RFC (based on RFC 7996 and svgcheck)

{
  "svg" => %w[version baseProfile width viewBox preserveAspectRatio snapshotTime
              height id role break color-rendering fill-rule],
  "desc" => %w[id role shape-rendering text-rendering buffered-rendering
               visibility],
  "title" => %w[id role shape-rendering text-rendering buffered-rendering
                visibility],
  "path" => %w[d pathLength stroke-miterlimit id role fill style
               transform font-size fill-rule],
  "rect" => %w[x y width height rx ry stroke-miterlimit
               id role fill style transform fill-rule],
  "circle" => %w[cx cy r id role fill style transform fill-rule],
  "line" => %w[x1 y1 x2 y2 id role fill transform fill-rule],
  "ellipse" => %w[cx cy rx ry id role fill style transform fill-rule],
  "polyline" => %w[points id role fill transform fill-rule],
  "polygon" => %w[points id role fill style transform fill-rule],
  "solidColor" => %w[id role fill fill-rule],
  "textArea" => %w[x y width height auto id role fill transform fill-rule],
  "text" => %w[x y rotate id role fill style transform font-size fill-rule],
  "g" => %w[label class id role fill style transform fill-rule visibility],
  "defs" => %w[id role fill fill-rule],
  "use" => %w[x y href id role fill transform fill-rule],
  "a" => %w[id role fill transform fill-rule target],
  "tspan" => %w[x y id role fill fill-rule],
  "tbreak" => %w[id role],
}.freeze

SVG_PROPERTIES =

SVG properties with their allowed values

{
  "about" => [],
  "base" => [],
  "baseProfile" => [],
  "d" => [],
  "break" => [],
  "class" => [],
  "content" => [],
  "cx" => ["<number>"],
  "cy" => ["<number>"],
  "datatype" => [],
  "height" => ["<number>"],
  "href" => [],
  "id" => [],
  "label" => [],
  "lang" => [],
  "pathLength" => [],
  "points" => [],
  "preserveAspectRatio" => [],
  "property" => [],
  "r" => ["<number>"],
  "rel" => [],
  "resource" => [],
  "rev" => [],
  "role" => [],
  "rotate" => [],
  "rx" => ["<number>"],
  "ry" => ["<number>"],
  "space" => [],
  "snapshotTime" => [],
  "transform" => [],
  "typeof" => [],
  "version" => [],
  "width" => ["<number>"],
  "viewBox" => ["<number>"],
  "x" => ["<number>"],
  "x1" => ["<number>"],
  "x2" => ["<number>"],
  "y" => ["<number>"],
  "y1" => ["<number>"],
  "y2" => ["<number>"],

  "stroke" => ["none", "<paint>"],
  "stroke-width" => [],
  "stroke-linecap" => %w[butt round square inherit],
  "stroke-linejoin" => %w[miter round bevel inherit],
  "stroke-miterlimit" => [],
  "stroke-dasharray" => [],
  "stroke-dashoffset" => [],
  "stroke-opacity" => [],
  "vector-effect" => %w[non-scaling-stroke none inherit],
  "viewport-fill" => ["none", "currentColor", "inherit", "<color>"],

  "display" => %w[inline block list-item run-in compact table inline-table
                  table-row-group table-header-group table-footer-group
                  table-row table-column-group table-column table-cell
                  table-caption none inherit],
  "viewport-fill-opacity" => [],
  "visibility" => %w[visible hidden collapse inherit],
  "image-rendering" => %w[auto optimizeSpeed optimizeQuality inherit],
  "color-rendering" => %w[auto optimizeSpeed optimizeQuality inherit],
  "shape-rendering" => %w[auto optimizeSpeed crispEdges geometricPrecision
                          inherit],
  "text-rendering" => %w[auto optimizeSpeed optimizeLegibility
                         geometricPrecision inherit],
  "buffered-rendering" => %w[auto dynamic static inherit],

  "solid-opacity" => [],
  "solid-color" => ["currentColor", "inherit", "<color>"],
  "color" => ["currentColor", "inherit", "<color>"],

  "stop-color" => ["currentColor", "inherit", "<color>"],
  "stop-opacity" => [],

  "line-increment" => [],
  "text-align" => %w[start end center inherit],
  "display-align" => %w[auto before center after inherit],

  "font-size" => [],
  "font-family" => %w[serif sans-serif monospace inherit],
  "font-weight" => %w[normal bold bolder lighter inherit 100 200 300 400
                      500 600 700 800 900],
  "font-style" => %w[normal italic oblique inherit],
  "font-variant" => %w[normal small-caps inherit],
  "direction" => %w[ltr rtl inherit],
  "unicode-bidi" => %w[normal embed bidi-override inherit],
  "text-anchor" => %w[start middle end inherit],
  "fill" => ["none", "inherit", "<color>"],
  "fill-rule" => %w[nonzero evenodd inherit],
  "fill-opacity" => [],

  "requiredFeatures" => [],
  "requiredFormats" => [],
  "requiredExtensions" => [],
  "requiredFonts" => [],
  "systemLanguage" => [],
}.freeze

BASIC_TYPES =

Basic types for validation

{
  "<color>" => %w[black #ffffff #FFFFFF white #000000],
  "<paint>" => ["none", "currentColor", "inherit", "<color>"],
  "<integer>" => ["+"],
  "<number>" => ["+"],
}.freeze

COLOR_DEFAULT =

Default color for replacements

"black"

COLOR_THRESHOLD =

Color threshold for grayscale conversion (from Python code)

764

STYLE_PROPERTIES =

Style properties that can be promoted to attributes

%w[
  font-family font-weight font-style font-variant direction unicode-bidi
  text-anchor fill fill-rule stroke stroke-width font-size fill-opacity
  stroke-linecap stroke-opacity stroke-linejoin
].freeze

SVG_CHILD_ELEMENTS =

Elements allowed within other elements

%w[
  title path rect circle line ellipse polyline polygon solidColor
  textArea text g defs use a tspan desc
].freeze

TEXT_CHILD_ELEMENTS =

%w[desc title tspan text a].freeze

ELEMENT_CHILDREN =

{
  "svg" => SVG_CHILD_ELEMENTS,
  "desc" => ["text"],
  "title" => ["text"],
  "path" => %w[title desc],
  "rect" => %w[title desc],
  "circle" => %w[title desc],
  "line" => %w[title desc],
  "ellipse" => %w[title desc],
  "polyline" => %w[title desc],
  "polygon" => %w[title desc],
  "solidColor" => %w[title desc],
  "textArea" => TEXT_CHILD_ELEMENTS,
  "text" => TEXT_CHILD_ELEMENTS,
  "g" => SVG_CHILD_ELEMENTS,
  "defs" => SVG_CHILD_ELEMENTS,
  "use" => %w[title desc],
  "a" => SVG_CHILD_ELEMENTS,
  "tspan" => TEXT_CHILD_ELEMENTS + ["tbreak"],
}.freeze

SVG_NAMESPACES =

Allowed SVG namespaces

[
  "http://www.w3.org/2000/svg",
].freeze

XMLNS_NAMESPACES =

Allowed XML namespaces

[
  "http://www.w3.org/2000/svg",
  "http://www.w3.org/1999/xlink",
  "http://www.w3.org/XML/1998/namespace",
].freeze

COLOR_MAP =

Color mapping for common color names to RFC-compliant colors

{
  "rgb(0,0,0)" => "black",
}.freeze