Documentation
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Index ¶
- Variables
- func ExpandFont(tokens []Token) ([][2]string, error)
- func ExpandValidatePending(prop pr.KnownProp, from pr.Shortand, tokens []Token) (pr.DeclaredValue, error)
- func HasVar(token Token) bool
- func ParseCounterStyleName(tokens []pa.Token, cs counters.CounterStyle) string
- func PreprocessCounterStyleDescriptors(baseUrl string, descriptors []pa.Compound) counters.CounterStyleDescriptors
- func Validate(key pr.PropKey, tokens []Token) (pr.DeclaredValue, error)
- func ValidateKnown(name pr.KnownProp, tokens []Token, baseUrl string) (out pr.DeclaredValue, err error)
- type Declaration
- type FontFaceDescriptors
- type KeyedDeclarations
- type NamedProp
- type Token
Constants ¶
This section is empty.
Variables ¶
View Source
var ( ErrInvalidValue = errors.New("invalid or unsupported values for a known CSS property") LENGTHUNITS = map[string]pr.Unit{"ex": pr.Ex, "em": pr.Em, "ch": pr.Ch, "rem": pr.Rem, "px": pr.Px, "pt": pr.Pt, "pc": pr.Pc, "in": pr.In, "cm": pr.Cm, "mm": pr.Mm, "q": pr.Q} AngleUnits = map[string]pr.Unit{"rad": pr.Rad, "turn": pr.Turn, "deg": pr.Deg, "grad": pr.Grad} // http://drafts.csswg.org/csswg/css3-values/#angles // 1<unit> is this many radians. ANGLETORADIANS = map[pr.Unit]utils.Fl{ pr.Rad: 1, pr.Turn: 2 * math.Pi, pr.Deg: math.Pi / 180, pr.Grad: math.Pi / 200, } // http://drafts.csswg.org/csswg/css-values/#resolution RESOLUTIONTODPPX = map[string]utils.Fl{ "dppx": 1, "dpi": utils.Fl(1 / pr.LengthsToPixels[pr.In]), "dpcm": utils.Fl(1 / pr.LengthsToPixels[pr.Cm]), } )
Functions ¶
func ExpandFont ¶ added in v0.0.2
ExpandFont expands the 'font' property, to be used in SVG documents. It returns a list of (name, property) pairs
func ExpandValidatePending ¶ added in v0.0.10
func HasVar ¶ added in v0.0.10
HasVar returns true if [token] is a var(...), or is a function with any var()
func ParseCounterStyleName ¶
func ParseCounterStyleName(tokens []pa.Token, cs counters.CounterStyle) string
func PreprocessCounterStyleDescriptors ¶
func PreprocessCounterStyleDescriptors(baseUrl string, descriptors []pa.Compound) counters.CounterStyleDescriptors
func ValidateKnown ¶ added in v0.0.10
func ValidateKnown(name pr.KnownProp, tokens []Token, baseUrl string) (out pr.DeclaredValue, err error)
ValidateKnown validate one known, non shortand, property.
Types ¶
type Declaration ¶ added in v0.0.10
type Declaration struct {
Name pr.PropKey
Value pr.DeclaredValue
// Shortand is not zero for shortands containing 'var()' tokens, waiting to be expanded and validated
// In this case, [Value] is [pr.RawTokens] and refers to the associate shorthand, not to the expanded [Name]
Shortand pr.Shortand
Important bool
}
Declaration is the input form of a CSS property, possibly containing variables.
func PreprocessDeclarations ¶
func PreprocessDeclarations(baseUrl string, declarations []pa.Compound) []Declaration
See PreprocessDeclarationsPrelude
type FontFaceDescriptors ¶
type FontFaceDescriptors struct {
Src []pr.NamedString
FontFamily pr.String
FontStyle pr.String
FontWeight pr.IntString
FontStretch pr.String
FontFeatureSettings pr.FontFeatures
FontVariant []NamedProp
}
func PreprocessFontFaceDescriptors ¶
func PreprocessFontFaceDescriptors(baseUrl string, descriptors []pa.Compound) FontFaceDescriptors
type KeyedDeclarations ¶ added in v0.0.10
type KeyedDeclarations struct {
Selector selector.SelectorGroup
Declarations []Declaration
}
func PreprocessDeclarationsPrelude ¶ added in v0.0.10
func PreprocessDeclarationsPrelude(baseURL string, declarations []pa.Compound, prelude []pa.Token) ([]KeyedDeclarations, error)
PreprocessDeclarationsPrelude filter unsupported properties or parsing errors, and expand shortand properties.
Properties containing var() tokens are not validated yet. Shortand containing var() tokens are not expanded.
Log a warning for every ignored declaration.
If [prelude] is nil, the returned error is always nil. The returned slice is never empty, and has always length 1 if [prelude] is nil.
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