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SVG.m
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SVG.m
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(* ::Package:: *)
(* Autogenerated Package *)
BeginPackage["SVG`"];
(* ::Text:: *)
(*
Simple SVG primitive support
*)
ToSVG::usage=
"Export to an SVG XMLObject"
BeginPackage["SVG`Package`"];
toXML::usage=
"Turns svgElement structures into XML";
toEl::usage=
"Turns aliases and standard SVG into svgElement data";
register::usage=
"Registers a new transformable SVG element";
alias::usage=
"Registers a new alias for toplevel elements in terms of SVG elements";
CSSGenerate::usage=
"Copped from BTools. Just there to support style elements";
prepareSVGGraphics::usage="";
getViewBox::usage="";
getPlotRange::usage="";
getImSize::usage="";
getAspRat::usage="";
getPlotRangePad::usage="";
axesAndFrame::usage="";
toSVGCore::usage="";
exportGraphics::usage="";
canonicalizeDirectives::usage="";
splitGraphicsList::usage="";
EndPackage[];
Begin["`Private`"];
(* ::Subsubsection::Closed:: *)
(*CSSGenerate*)
(* ::Text:: *)
(*
Used for styling things
*)
(* ::Subsubsubsection::Closed:: *)
(*AllowedProperties*)
$CSSDefaultAllowedProperties=
Alternatives@@
{
"align-content","align-items","align-self",
"all","animation","animation-delay",
"animation-direction","animation-duration","animation-fill-mode",
"animation-iteration-count","animation-name","animation-play-state",
"animation-timing-function","backface-visibility","background",
"background-attachment","background-blend-mode","background-clip",
"background-color","background-image","background-origin",
"background-position","background-repeat","background-size",
"border","border-bottom","border-bottom-color",
"border-bottom-left-radius","border-bottom-right-radius","border-bottom-style",
"border-bottom-width","border-collapse","border-color",
"border-image","border-image-outset","border-image-repeat",
"border-image-slice","border-image-source","border-image-width",
"border-left","border-left-color","border-left-style",
"border-left-width","border-radius","border-right",
"border-right-color","border-right-style","border-right-width",
"border-spacing","border-style","border-top",
"border-top-color","border-top-left-radius","border-top-right-radius",
"border-top-style","border-top-width","border-width",
"bottom","box-shadow","box-sizing",
"caption-side","clear","clip",
"color","column-count","column-fill",
"column-gap","column-rule","column-rule-color",
"column-rule-style","column-rule-width","column-span",
"column-width","columns","content",
"counter-increment","counter-reset","cursor",
"direction","display","empty-cells",
"filter","flex","flex-basis",
"flex-direction","flex-flow","flex-grow",
"flex-shrink","flex-wrap","float",
"font","@font-face","font-family",
"font-size","font-size-adjust","font-stretch",
"font-style","font-variant","font-weight",
"hanging-punctuation","height","justify-content",
"@keyframes","left","letter-spacing",
"line-height","list-style","list-style-image",
"list-style-position","list-style-type","margin",
"margin-bottom","margin-left","margin-right",
"margin-top","max-height","max-width",
"@media","min-height","min-width",
"nav-down","nav-index","nav-left",
"nav-right","nav-up","opacity",
"order","outline","outline-color",
"outline-offset","outline-style","outline-width",
"overflow","overflow-x","overflow-y",
"padding","padding-bottom","padding-left",
"padding-right","padding-top","page-break-after",
"page-break-before","page-break-inside","perspective",
"perspective-origin","position","quotes",
"resize","right","tab-size",
"table-layout","text-align","text-align-last",
"text-decoration","text-decoration-color","text-decoration-line",
"text-decoration-style","text-indent","text-justify",
"text-overflow","text-shadow","text-transform",
"top","transform","transform-origin",
"transform-style","transition","transition-delay",
"transition-duration","transition-property","transition-timing-function",
"unicode-bidi","user-select","vertical-align",
"visibility","white-space","width",
"word-break","word-spacing","word-wrap",
"z-index","color","opacity",
"background","background-attachment","background-blend-mode",
"background-color","background-image","background-position",
"background-repeat","background-clip","background-origin",
"background-size","border","border-bottom",
"border-bottom-color","border-bottom-left-radius","border-bottom-right-radius",
"border-bottom-style","border-bottom-width","border-color",
"border-image","border-image-outset","border-image-repeat",
"border-image-slice","border-image-source","border-image-width",
"border-left","border-left-color","border-left-style",
"border-left-width","border-radius","border-right",
"border-right-color","border-right-style","border-right-width",
"border-style","border-top","border-top-color",
"border-top-left-radius","border-top-right-radius","border-top-style",
"border-top-width","border-width","box-shadow",
"bottom","clear","clip",
"display","float","height",
"left","margin","margin-bottom",
"margin-left","margin-right","margin-top",
"max-height","max-width","min-height",
"min-width","overflow","overflow-x",
"overflow-y","padding","padding-bottom",
"padding-left","padding-right","padding-top",
"position","right","top",
"visibility","width","vertical-align",
"z-index","align-content","align-items",
"align-self","flex","flex-basis",
"flex-direction","flex-flow","flex-grow",
"flex-shrink","flex-wrap","justify-content",
"order","hanging-punctuation","letter-spacing",
"line-height","tab-size","text-align",
"text-align-last","text-indent","text-justify",
"text-transform","white-space","word-break",
"word-spacing","word-wrap","text-decoration",
"text-decoration-color","text-decoration-line","text-decoration-style",
"text-shadow","@font-face","font",
"font-family","font-size","font-size-adjust",
"font-stretch","font-style","font-variant",
"font-weight","direction","unicode-bidi",
"direction","user-select","border-collapse",
"border-spacing","caption-side","empty-cells",
"table-layout","counter-increment","counter-reset",
"list-style","list-style-image","list-style-position",
"list-style-type","@keyframes","animation",
"animation-delay","animation-direction","animation-duration",
"animation-fill-mode","animation-iteration-count","animation-name",
"animation-play-state","animation-timing-function","backface-visibility",
"perspective","perspective-origin","transform",
"transform-origin","transform-style","transition",
"transition-property","transition-duration","transition-timing-function",
"transition-delay","box-sizing","content",
"cursor","nav-down","nav-index",
"nav-left","nav-right","nav-up",
"outline","outline-color","outline-offset",
"outline-style","outline-width","resize",
"text-overflow","column-count","column-fill",
"column-gap","column-rule","column-rule-color",
"column-rule-style","column-rule-width","column-span",
"column-width","columns","page-break-after",
"page-break-before","page-break-inside","quotes",
"filter"
};
(* ::Subsubsubsection::Closed:: *)
(*AllowedTypes*)
$CSSDefaultAllowedTypes=
Alternatives@@
{
"a","abbr","acronym",
"address","applet","area",
"article","aside","audio",
"b","base","basefont",
"bdi","bdo","big",
"blockquote","body",
"br","button","buildto",
"canvas","caption","center",
"cite","code","col",
"colgroup",
"data","datalist",
"dd","del","details",
"dfn","dialog","dir",
"div","dl","dt",
"em","embed",
"fieldset","figcaption","figure",
"font","footer","form",
"frame","frameset",
"header","hr",
"h1","h2","h3",
"h4","h5","h6",
"i","iframe","img",
"inputcell",
"input","ins",
"kbd","keygen",
"label","legend","li",
"link",
"main","map","mark",
"menu","menuitem",
"meta","meter",
"nav","noframes",
"noscript",
"object","ol",
"optgroup","option",
"output",
"p","param",
"picture","pre",
"progress",
"q",
"rp","rt","ruby",
"s","samp","script",
"section","select","small",
"source","span","strike",
"strong","style","sub",
"summary","sup",
"table","tbody","td",
"textarea","tfoot","th",
"thead","time","title",
"tr","track","tt",
"u","ul",
"var","video",
"wbr"
};
(* ::Subsubsubsection::Closed:: *)
(*$CSSPropertyRules*)
$CSSDefaultPropertyRules=
{
FontColor->"color",
FrameStyle->"border",
FrameMargins->"margin",
TextAlignment->"text-align",
TabSpacings->"tab-size",
SourceLink->"src",
ButtonFunction->
"onclick",
Annotation->"alt",
Hyperlink->"href",
RoundingRadius->"border-radius",
LineSpacing->"line-height",
ImageSize->{"width","height"},
CellSize->{"width", "height"},
e_:>
(
ToLowerCase[
StringJoin@{
StringTake[#,1],
StringReplace[StringDrop[#,1],
l:LetterCharacter?(Not@*LowerCaseQ):>"-"<>l]
}&@ToString[e]
]
)
};
(* ::Subsubsubsection::Closed:: *)
(*$CSSValueRules*)
$CSSDefaultValueRules=
Join[
Map[
Replace[#,
Hold[c_]:>
(c->ToLowerCase@ToString[Unevaluated[c]])
]&,
Thread@Hold@{
Red,White,Blue,Black,Yellow,
Green,Orange,Purple,Pink,Gray,
LightBlue,LightRed,LightGray,LightYellow,
LightGreen,LightOrange,LightPurple,LightPink,
Thick,Dotted,Thin,Dashed
}],{
c_?ColorQ:>
"#"<>Map[
StringPadLeft[
IntegerString[#,16],
2,
"0"
]&,
Floor[255*Apply[List,ColorConvert[c,RGBColor]]]
],
i_Integer:>
ToString[i]<>"px",
q_Quantity:>
StringReplace[
ToString[q],
" "->""
],
Scaled[i_]:>
ToString@Floor[i*100]<>"%",
r_Rule:>
(cssGenerate[r]),
{l__}|Directive[l__]:>
StringRiffle@Map[#/.$CSSValueRules&,{l}],
d_Dynamic:>
(Setting[d]/.$CSSValueRules),
i_:>ToLowerCase@ToString[i]
}
];
(* ::Subsubsubsection::Closed:: *)
(*$CSSTypeRules*)
$CSSDefaultTypeRules=
{
"Title"->"h1",
"Subtitle"->"h2",
"Section"->"h3",
"Subsection"->"h4",
"Subsubsection"->"h5",
"Subsubsubsection"->"h6",
"Hyperlink"->"a",
"HyperlinkActive"->"a:hover",
"Graphics"->"img",
"Text"->"p",
s_String:>(ToLowerCase[s])
};
(* ::Subsubsubsection::Closed:: *)
(*cssThreadedOptions*)
cssThreadedOptions[propBase_,propOps_,vals_]:=
MapThread[
If[!MatchQ[#2,Inherited|None],
If[StringContainsQ[propBase,"-"],
StringReplace[propBase,{
"-"->("-"<>#<>"-")
}]->(#2/.$CSSValueRules),
StringJoin[propBase,"-"<>#]->(#2/.$CSSValueRules)
],
Nothing
]&,{
propOps,
vals
}]
(* ::Subsubsubsection::Closed:: *)
(*cssGenerate*)
cssGenerate//Clear;
cssGenerate[
prop_->val:Except[{__Rule}]
]:=
With[{
propBase=
prop/.$CSSPropertyRules
},
If[!MatchQ[propBase, $CSSAllowedProperties],
Nothing,
If[Not@ListQ@propBase,
Sequence@@
Replace[val,
{
{{l_,r_},{b_,h_}}:>
If[StringContainsQ[propBase,"radius"],
cssThreadedOptions[
propBase,
{"left-bottom","right-bottom","left-top","right-top"},
{l,r,b,h}
],
cssThreadedOptions[
propBase,
{"left","right","bottom","top"},
{l,r,b,h}
]
],
{l_,r_}:>
cssThreadedOptions[
propBase,
{"left","right"},
{l,r}
],
v_:>
{propBase->(v/.$CSSValueRules)}
}
],
If[ListQ@val,
Sequence@@cssGenerate[Thread[propBase->val]],
cssGenerate[First@propBase->val]
]
]
]
];
cssGenerate[
type:_String|_Symbol->spec:{__Rule}
]:=
With[{tp=ToString[type]/.$CSSTypeRules},
If[!MatchQ[tp, $CSSAllowedProperties],
Nothing,
tp->Map[cssGenerate, spec]
]
];
cssGenerate[r:{__Rule}]:=
cssGenerate/@r;
cssGenerate[a_Association]:=
KeyValueMap[cssGenerate,a];
cssGenerate[{},Optional[_,_]]:={};
(* ::Subsubsubsection::Closed:: *)
(*generateCSSString*)
generateCSSString[{}, _]:=""
generateCSSString[r:{__Rule}, riffle:_String:" "]:=
StringRiffle[
KeyValueMap[#<>": "<>#2<>";"&, Association[r]],
riffle
];
generateCSSString[r:{__Rule}, {riffle_String, _}]:=
generateCSSString[r, riffle]
generateCSSString[a_Association?AssociationQ,
riffle:{_String, _String}:{" ", "\n"}]:=
StringRiffle[
KeyValueMap[
(#/.$CSSTypeRules)<>"{"<>riffle[[1]]<>
generateCSSString[#2, riffle[[1]]]<>riffle[[1]]<>"}"&,
a
],
riffle[[2]]
];
(* ::Subsubsubsection::Closed:: *)
(*generateObjectStyles*)
generateObjectStyles//Clear
generateObjectStyles[nb_NotebookObject]:=
Prepend[
AssociationMap[
AbsoluteCurrentValue[nb, {StyleDefinitions, #}]&,
Select[StringQ]@Keys@
FE`Evaluate@
FEPrivate`GetPopupList[nb,"MenuListStyles"]
],
"body"->Options[nb]
]
generateObjectStyles[cell_CellObject]:=
Normal@Merge[
{
Options[cell],
AbsoluteCurrentValue[ParentNotebook[cell],
{StyleDefinitions, NotebookRead[cell][[2]]}
]
},
First
]
generateObjectStyles[box_BoxObject]:=
Options[box];
(* ::Subsubsubsection::Closed:: *)
(*CSSGenerate*)
Options[CSSGenerate]=
{
"PropertyMapping"->Automatic,
"AllowedProperties"->Automatic,
"ValueMapping"->Automatic,
"TypeMapping"->Automatic,
"AllowedTypes"->Automatic,
"GenerateString"->True,
"RiffleCharacter"->{" ", "\n"}
};
CSSGenerate[l:(_List?OptionQ|_Association?(OptionQ@*Normal)), ops:OptionsPattern[]]:=
Block[
{
$CSSPropertyRules=
Replace[OptionValue["PropertyMapping"],
Except[_?OptionQ]:>$CSSDefaultPropertyRules
],
$CSSValueRules=
Replace[OptionValue["ValueMapping"],
Except[_?OptionQ]:>$CSSDefaultValueRules
],
$CSSTypeRules=
Replace[OptionValue["TypeMapping"],
Except[_?OptionQ]:>$CSSDefaultTypeRules
],
$CSSAllowedProperties=
Replace[OptionValue["AllowedProperties"],
{
{s__String}:>
Alternatives[s],
Except[_Alternatives]:>
$CSSDefaultAllowedProperties
}
],
$CSSAllowedTypes=
Replace[OptionValue["AllowedTypes"],
{
{s__String}:>
Alternatives[s],
Except[_Alternatives]:>
$CSSDefaultAllowedTypes
}
]
},
If[TrueQ@OptionValue["GenerateString"],
generateCSSString[#,
Replace[OptionValue["RiffleCharacter"],
{
s_String?StringQ:>
{s, "\n"},
Except[{_String?StringQ, _String?StringQ}]:>
{" ", "\n"}
}]
]&,
Identity
]@
If[AllTrue[Values@l, OptionQ],
Map[cssGenerate,
If[$CSSAllowedTypes===All,
Association[l],
KeySortBy[FirstPosition[$CSSTypeRules, #/.$CSSTypeRules]&]@
KeySelect[Association[l],
MatchQ[#/.$CSSTypeRules, $CSSAllowedTypes]&
]
]
],
cssGenerate[l]
]
]
CSSGenerate[
nb:
_NotebookObject|_CellObject|_BoxObject|
_FrontEnd`EvaluationNotebook|_FrontEnd`InputNotebook:FrontEnd`InputNotebook[],
ops:OptionsPattern[]
]:=
CSSGenerate[generateObjectStyles[FE`Evaluate@nb], ops]
(* ::Subsubsection::Closed:: *)
(*toXML*)
(* ::Subsubsubsection::Closed:: *)
(*toNotStupidString*)
(* ::Text:: *)
(*
ToString[x*10^7] is ridiculously stupid so we need to do this to fix it
*)
toNotStupidString[n_?IntegerQ]:=
StringTrim[Quiet@ToString@NumberForm[n, ExponentFunction->(Null&)], "."];
toNotStupidString[n_?NumericQ]:=
StringTrim[Quiet@ToString@NumberForm[N@n, ExponentFunction->(Null&)], "."];
toNotStupidString[e_]:=
ToString@e
(* ::Subsubsubsection::Closed:: *)
(*$SVGColorMap*)
$SVGColorMap=
KeyMap[
ReleaseHold,
AssociationMap[
Replace[Hold[a_]:>ToLowerCase@SymbolName[Unevaluated[a]]],
Thread@Hold@{
Black, White, Gray,
Red, Blue, Green, Yellow,
Orange, Pink, Purple
}
]
]
(* ::Subsubsubsection::Closed:: *)
(*$SVGValMap*)
$SVGValMap=
Join[
$SVGColorMap,
KeyMap[N, $SVGColorMap],
<|
(* other directly convertable values *)
None->"none",
Opacity[0]->"none",
Opacity[0.]->"none",
Automatic->"auto"
|>
]
(* ::Subsubsubsection::Closed:: *)
(*ScalingFactors*)
$symbScalingFactors=
6*10^-2*<|
Tiny->.005,
Small->.01,
Medium->.05,
Large->.1
|>
$symbDashingFactors=
Map[#*{2, .6}&]@<|
Tiny->.005,
Small->.01,
Medium->.05,
Large->.1
|>
(* ::Subsubsubsection::Closed:: *)
(*toSVGString*)
(* ::Text:: *)
(*
This attempts to take an SVG option value and get a proper string representation for it. There is some hacky-ness as handling of things like Dashing[{Small, Small}] must be different from that of Thickness[Large]. Hopefully this can be cleaned sometime.
*)
toSVGString//Clear
toSVGString[Scaled[s_], __]:=
toNotStupidString[Floor@100*s]<>"%";
toSVGString[RGBColor[r__], h__]:=
"#"<>IntegerString[Floor[{r}*255], 16, 2];
toSVGString[h_?ColorQ, __]:=
toSVGString[ColorConvert[h, RGBColor], None, None];
toSVGString[v_, _, "Style"]:=
CSSGenerate[Flatten@{Normal@v}];
toSVGString[v_, _, "Thickness"]:=
If[StringQ@v,
v,
toSVGString[Scaled[v], None, None]
];
toSVGString[v_, _, "AbsoluteThickness"]:=
If[StringQ@v,
v,
toSVGString[If[NumericQ@v&&v>0, Max@{v, 1}, v], None, None]<>"pt"
];
toSVGString[v_, _, "CapForm"]:=
ToLowerCase[v];
toSVGString[v_, _, "JoinForm"]:=
ToLowerCase[v];
toSVGString[l_List, _, "Dashing"]:=
StringRiffle@Map[ToString]@
Module[
{
vbmin=$svgViewBox[[3]](*Min[$svgViewBox[[3;;]]]*)
},
MapIndexed[
Replace[$symbDashingFactors[#],
{
m_Missing:>#,
e_:>e[[Mod[#2[[1]], 2, 1]]]*vbmin
}
]&,
l
]
];
toSVGString[(h:Except[List])[x_], _, _]:=(* handling things like Rotate *)
ToLowerCase@ToString[h]<>"("<>toSVGString[x, None, None]<>")";
toSVGString[a_, head_, _]:=
Block[
{
$scaling=$symbScalingFactors
(*If[head==="stroke-dasharray", $symbDashingFactors, $symbScalingFactors]*),
vbmin=$svgViewBox[[3]](*Min[$svgViewBox[[3;;]]]*)
},
a//.{(* a bunch of junk to handle symbolic sizes *)
k:Alternatives@@Keys[$scaling]:>
Lookup[$scaling, k]*vbmin
}//ReplaceAll@{
{n_?NumericQ, m_?NumericQ}:>
(
toNotStupidString[n]<>","<>toNotStupidString[m]
),
e:_?NumericQ:>toNotStupidString[e]
}//
Replace@{
l_List:>StringRiffle[ToString/@l],
e_:>ToString@e
}
]
(* ::Subsubsubsection::Closed:: *)
(*$SVGPropMap*)
$SVGFacePropMap=
KeyMap[SymbolName]@<|
Filling->"fill",
Opacity->"fill-opacity",
RoundingRadius->{"rx", "ry"}
|>;
$SVGEdgePropMap=
KeyMap[SymbolName]@<|
LineColor->"stroke",
Filling->"stroke",
RoundingRadius->"stroke-round",
CapForm->"stroke-linecap",
Thickness->"stroke-width",
AbsoluteThickness->"stroke-width",
JoinForm->"stroke-linejoin",
Dashing->"stroke-dasharray",
AbsoluteDashing->"stroke-dasharray"
|>;
$SVGPropMap=
KeyMap[SymbolName]@<|
TransformationFunction->"transform",
FontFamily->"font",
Style->"style"
|>
(* ::Subsubsubsection::Closed:: *)
(*toSVGProp*)
(* ::Text:: *)
(*
Builds an attribute rule for an SVG elements. This has to handle face and edge elements differently so there are different prop maps for each.
*)
toSVGProp//Clear
(*decamel[s_]:=
StringTrim[
StringJoin@
StringSplit[s, l:LetterCharacter?(Not@*LowerCaseQ)\[RuleDelayed]"-"<>ToLowerCase@l],
Except[LetterCharacter]
]*)
toSVGProp[(form:EdgeForm|FaceForm|None)[key_], val_]:=
Module[{k1, k, m},
k1=k=ToString@key;
m=
Which[
form===EdgeForm,
$SVGEdgePropMap,
form===FaceForm,
$SVGFacePropMap,
True,
$SVGPropMap
];
k=Lookup[m, k, Lookup[$SVGPropMap, k, If[StringQ@key, k(*decamel[k]*), None]]];
Which[
k===None,
Nothing,
ListQ@k,
MapThread[
#->Lookup[$SVGValMap, Key@#2, toSVGString[#2, #, k1]]&,
{
k,
val
}
],
True,
k->Lookup[$SVGValMap, Key@val, toSVGString[val, k, k1]]
]
];
toSVGProp[key_, val_]:=
toSVGProp[None@key, val]
(* ::Subsubsubsection::Closed:: *)
(*toXML*)
toXML//Clear
toXML[svgElement["style", attrs_]]:=
XMLElement["style",
{},
KeyValueMap[
#<>" { "<>CSSGenerate[#2]<>" }"&,
Association@attrs["Styles"]
]
]
toXML[svgElement[head_, attrs_]]:=
XMLElement[head,
DeleteDuplicatesBy[First]@KeyValueMap[toSVGProp,
KeyDrop[Association@attrs, "Body"]
],
Flatten@List@ReplaceAll[
Lookup[attrs, "Body", {}],
s:(Alternatives@@Map[Blank, Prepend[Keys@$svgPrimitives, svgElement]]):>
toXML@toEl[s]
]
]
(* ::Subsubsection::Closed:: *)
(*toEl*)
(* ::Text:: *)
(*
This defines the DSL and primary aliasing for Mathematica objects. Extra rules can be added in the Aliases section.
*)
ClearAll@toEl
toEl~SetAttributes~Listable
opsPatRule=(_FaceForm|_EdgeForm|_String|_Symbol)->_;
opsPat[]=___?(MatchQ[Flatten[{#}], {opsPatRule...}]&);
notOp[]:=_?(Not@MatchQ[Flatten@{#}, {opsPatRule...}]&)
$toElConvertsFully=True;
(* ::Subsubsubsection::Closed:: *)
(*register*)
$svgPrimitives=
<|
|>;
register[fn_, head_, args__]:=
With[{flargs=Flatten@{args}},
Context[fn]=StringReplace[Context[fn], "Private"->"Package"];
$svgPrimitives[fn]=head;
Replace[
{
{args}/.(pat_->key_String):>pat,
Cases[flargs, (_->key_String):>key],
Thread[
Replace[flargs,
{
(Verbatim[Pattern][a_, _]->key_String):>Hold[a],
(
(Optional|PatternTest|Condition)[Verbatim[Pattern][a_, _], _]->key_String
):>Hold[a],
_->Nothing
},
1
],
Hold
]
},
{
{
{pats__},
vars_,
Hold[vals_]
}:>
(
toEl[svg:fn[pats, ops:opsPat[]]]:=
If[TrueQ@$toElConvertsFully,
svgElement[head,
Merge[
{
Thread[vars->vals],
ops
},
First
]
],
svg
]
),
_:>Failure["RegistrationFailure",
<|
"MessageTemplate"->
"Failed to register conversion rule for head `` and type `` with argspec ``",
"MessageParameters":>
{fn, head, {args}}
|>
]
}
]
]
(* ::Subsubsubsection::Closed:: *)
(*alias*)
ClearAll@alias;
ClearAll@aliasedQ;
ClearAll@aliasTarget;
ClearAll@lineTypeAlias;
alias/:(alias[lineType:True|False][expr_]:=form_):=
Block[{$svgLineType=False},
aliasedQ[expr]=True;
lineTypeAlias[expr]=lineType;
aliasTarget[expr]=
FirstCase[
HoldComplete[form],
Alternatives@@Keys[$svgPrimitives],
None,
\[Infinity],