package css

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Mapping properties to values
Computing functions
Associating computation functions to properties
Computing from declarations

Css: Parsing and printing CSS
- README
- Library css
  - Css
    
    Log
    
    Log
    
    T
    
    Smap
    
    Sset
    
    Imap
    
    Sys_font_map
    
    U
    
    Vp
    
    S
    
    Smap
    
    Sp
    
    P
    
    Key
    
    M
    
    Prop_space
    
    Css
    
    Sh
    
    C
    
    Computed
    
    Kw
- Sources
  - css
    
    c.ml
    
    css.ml
    
    css__.ml
    
    kw.ml
    
    log.ml
    
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    vp.ml

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Module `Css.C`Source

Computing values.

Mapping properties to values

Sourcemodule Computed : sig ... end

A Computed.t maps a 'a property to a value of type 'a, if any.

Sourcetype t = Computed.t

Sourceval opt : t -> 'a P.prop -> 'a option

opt t p returns the computed value of p in t, if any.

Sourceval get : t -> 'a P.prop -> 'a

opt t p returns the computed value of p in t if present or else returns the initial value of p.

Sourceval add : t -> 'a P.prop -> 'a -> t

add t p v adds binding from p to v in t.

Sourceval filter_inherited : t -> t

filter_inherited t returns bindings of t where the property is inherited.

Sourceval empty : t

Sourceval pp : Format.formatter -> t -> unit

Sourceval comp_global : parent:t -> 'a P.prop -> T.global_kw -> 'a

comp_global ~parent p v returns value of p according to global value v, i.e. it returns the initial value of p, of the value of p in parent.

Sourceval get_p : parent:t -> t -> 'a P.prop -> 'a

get_p ~parent t p returns value of p in t. If p is not mapped in t and p is not inherited, returns initial value of p. If p is inherited, returns its value in parent. If p is not mapped in parent, returns initial value of p.

Computing functions

Sourceval to_px : T.number -> T.abs_length_unit -> float

Sourceval px_of_font_size_kw : (T.font_size -> float) ref

Sourceval color : root:'a -> parent:t -> 'b -> T.color -> T.color

val accent_color : 
  root:'a ->
  parent:t ->
  'b ->
  [< `Auto
  | `Current_color
  | `Named_color of string
  | `Rgba of float * float * float * float
  | `System_color of T.system_color
  | `Transparent ] ->
  T.accent_color

Sourceval length_of_font_size : t -> float -> [> `em | `ex | `rem ] -> float option

val length : 
  root:t ->
  t ->
  (T.number
   * [> `In | `cm | `em | `ex | `mm | `pc | `pt | `px | `q | `rem ] as 'a) ->
  T.number * 'a

Sourceval font_size : root:t -> parent:t -> 'a -> T.font_size -> T.font_size

Computes font_size in px when possible from absolute size or size relative to parent.

Sourceval font_weight : root:'a -> parent:t -> 'b -> T.font_weight -> T.font_weight

val size : 
  root:t ->
  parent:'a ->
  t ->
  [> `Length of
       T.number
       * [> `In | `cm | `em | `ex | `mm | `pc | `pt | `px | `q | `rem ] ] as 'b ->
  'b

val line_height : 
  root:t ->
  parent:'a ->
  t ->
  [< T.line_height ] ->
  [> T.line_height ]

val word_spacing : 
  root:t ->
  parent:'a ->
  t ->
  [< T.word_spacing ] ->
  [> T.word_spacing ]

val border_spacing : 
  root:t ->
  parent:'a ->
  t ->
  ((T.number
    * [> `In | `cm | `em | `ex | `mm | `pc | `pt | `px | `q | `rem ] as 'b)
   * (T.number
      * [> `In | `cm | `em | `ex | `mm | `pc | `pt | `px | `q | `rem ] as 'c)) ->
  (T.number * 'b) * (T.number * 'c)

Sourceval border_width_of_kw : (T.border_width_kw -> float) ref

val border_width : 
  root:t ->
  parent:'a ->
  t ->
  [> `Length of
       T.number
       * [> `In | `cm | `em | `ex | `mm | `pc | `pt | `px | `q | `rem ]
  | `Medium
  | `Thick
  | `Thin ] as 'b ->
  'b

Sourceval font_family_of_generic : (T.font_family_generic_kw -> string) ref

val font_family_ : 
  root:'a ->
  parent:'b ->
  'c ->
  [< T.font_family_ ] ->
  [> T.font_family_ ]

val font_family : 
  root:'a ->
  parent:'b ->
  'c ->
  [< T.font_family_ ] list ->
  [> T.font_family_ ] list

val max_size : 
  root:t ->
  parent:'a ->
  t ->
  [> `Length of
       T.number
       * [> `In | `cm | `em | `ex | `mm | `pc | `pt | `px | `q | `rem ] ] as 'b ->
  'b

val margin : 
  root:t ->
  parent:'a ->
  t ->
  [> `Length of
       T.number
       * [> `In | `cm | `em | `ex | `mm | `pc | `pt | `px | `q | `rem ] ] as 'b ->
  'b

val padding : 
  root:t ->
  parent:'a ->
  t ->
  [> `Length of
       T.number
       * [> `In | `cm | `em | `ex | `mm | `pc | `pt | `px | `q | `rem ] ] as 'b ->
  'b

val vertical_align : 
  root:t ->
  parent:'a ->
  t ->
  [> `Length of
       T.number
       * [> `In | `cm | `em | `ex | `mm | `pc | `pt | `px | `q | `rem ] ] as 'b ->
  'b

Associating computation functions to properties

Sourcetype binding =

| B : 'a P.prop * ((module P.Prop_space) -> root:t -> parent:t -> t -> 'a P.value -> t) -> binding

val comp : 
  (root:'a -> parent:t -> t -> 'b -> 'b) ->
  'b P.prop ->
  (module P.Prop_space) ->
  root:'a ->
  parent:t ->
  t ->
  'b P.value ->
  Computed.binding P.M.t

comp f p ~root ~parent t v computes value of property p from its parsed value v, in the context of root and parent maps. f is applied on:

the result of recursive expansion if v is a variable,
the result of comp_global if v is a global keyword,
else v.

The resulting computed value is then added to t for property p.

Sourceval map : root:'a -> parent:'b -> 'c -> 'd -> 'd

map ~root ~parent t v returns v, without any computation. This is the default computation for several properties.

val register_prop_fun : 
  'a P.prop ->
  (root:t -> parent:t -> t -> 'a -> 'a) ->
  unit

register_prop_fun p f registers f as computation function for values of property p. This can be used to override or specify the computation function of a property.

Computing from declarations

val compute_decl : 
  (module P.Prop_space) ->
  root:t ->
  parent:t ->
  t ->
  P.binding ->
  Computed.binding P.M.t

val compute_decls : 
  (module P.Prop_space) ->
  root:t ->
  parent:t ->
  t ->
  P.binding list ->
  t

compute_decls ~root ~parent t decls performs computations of the given declarations decls in the environment of root computed values, parent computed values and current computed values t.