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3 2��jc�� @s�ddlmZmZddlZddlmZddlmZddlm Z ddlmZm Z mZmZddlmZddlmZdd lmZmZmZdd lmZddlmZddlZddlZeje�Zdd �Z dZ!dZ"dZ#dZ$dZ%d�dd�Z&Gdd�de'�Z(Gdd�de(�Z)Gdd�dedddddg��Z*Gdd �d �Z+Gd!d"�d"e(�Z,Gd#d$�d$e,�Z-Gd%d&�d&e,�Z.Gd'd(�d(e(�Z/Gd)d*�d*e(�Z0Gd+d,�d,e(�Z1Gd-d.�d.e(�Z2Gd/d0�d0e(�Z3Gd1d2�d2e(�Z4Gd3d4�d4e(�Z5Gd5d6�d6e(�Z6Gd7d8�d8e'�Z7Gd9d:�d:e(�Z8Gd;d<�d�Z:d?d@�Z;dAdB�Zd�dGdH�Z?dIdJ�Z@dKdL�ZAdMdN�ZBdOdP�ZCdQdR�ZDdSdT�ZEdUdV�ZFdWdX�ZGdYdZ�ZHd[d\�ZId]d^�ZJd_d`�ZKdadb�ZLdcdd�ZMdedf�ZNd�dgdh�ZOdidj�ZPd�dkdl�ZQdmdn�ZRdodp�ZSdqdr�ZTdsdt�ZUedudv�ZVdwdx�ZWdydz�ZXd{d|�ZYd}d~�ZZdd��Z[d�d��Z\d�d��Z]d�d��Z^d�d��Z_d�d��Z`Gd�d��d�e'�Zaed�d�Zbed�d�Zcd�d�d��Zdd�d��Zed�d��Zfd�d�d��ZgdS)��)� namedtuple�OrderedDictN)�fixedToFloat)�ttLib)�otTables)�ValueRecord�valueRecordFormatDict� OTTableWriter�CountReference)�otBase)�STATNameStatement)�GPOS_COMPACT_MODE_DEFAULT�GPOS_COMPACT_MODE_ENV_KEY�compact_lookup)�OpenTypeLibError)�reducecCs$|sdStj�}t||jd�|_|S)aBuilds a coverage table. 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H r�c@s eZdZdZdd�Zdd�ZdS)r�a>Builds a Chained Contextual Positioning (GPOS8) lookup. Users are expected to manually add rules to the ``rules`` attribute after the object has been initialized, e.g.:: # pos [A B] [C D] x' lookup lu1 y' z' lookup lu2 E; prefix = [ ["A", "B"], ["C", "D"] ] suffix = [ ["E"] ] glyphs = [ ["x"], ["y"], ["z"] ] lookups = [ [lu1], None, [lu2] ] builder.rules.append( (prefix, glyphs, suffix, lookups) ) Attributes: font (``fontTools.TTLib.TTFont``): A font object. location: A string or tuple representing the location in the original source which produced this lookup. rules: A list of tuples representing the rules in this lookup. lookupflag (int): The lookup's flag markFilterSet: Either ``None`` if no mark filtering set is used, or an integer representing the filtering set to be used for this lookup. If a mark filtering set is provided, `LOOKUP_FLAG_USE_MARK_FILTERING_SET` will be set on the lookup's flags. cCs"tj|||dd�g|_d|_dS)Nr4r ZPos)r3r<ror�)rr6r7rrrr<�szChainContextPosBuilder.__init__csTd}xJ|ddd�D]8��|jkr&|St�t�rt��fdd�|D��r�}qW|S)z$Helper for add_single_pos_chained_()Nrc3s|]}�j|��VqdS)N)�can_add)r"�glyph)�lookup�valuerrr(�szCChainContextPosBuilder.find_chainable_single_pos..rZ)r[r.�SinglePosBuilderr))rrmrr��resr)r�r�r�find_chainable_single_pos�s z0ChainContextPosBuilder.find_chainable_single_posN)rarbrcrir<r�rrrrr��sr�c@s(eZdZdZdd�Zdd�Zdd�ZdS) �ChainContextSubstBuildera?Builds a Chained Contextual Substitution (GSUB6) lookup. 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Users are expected to manually add ligatures to the ``ligatures`` attribute after the object has been initialized, e.g.:: # sub f i by f_i; builder.ligatures[("f","f","i")] = "f_f_i" Attributes: font (``fontTools.TTLib.TTFont``): A font object. location: A string or tuple representing the location in the original source which produced this lookup. ligatures: An ordered dictionary mapping a tuple of glyph names to the ligature glyphname. lookupflag (int): The lookup's flag markFilterSet: Either ``None`` if no mark filtering set is used, or an integer representing the filtering set to be used for this lookup. If a mark filtering set is provided, `LOOKUP_FLAG_USE_MARK_FILTERING_SET` will be set on the lookup's flags. cCstj|||dd�t�|_dS)Nr5r)r3r<r� ligatures)rr6r7rrrr<szLigatureSubstBuilder.__init__cCstj||�o|j|jkS)N)r3r?r�)rr>rrrr?szLigatureSubstBuilder.equalscCs|j|jt�}|j|�S)z�Build the lookup. Returns: An ``otTables.Lookup`` object representing the ligature substitution lookup. )r]r��buildLigatureSubstSubtablerB)rr'rrrrh"s zLigatureSubstBuilder.buildcCs|j|j|j|f<dS)N)r[r�)rr7rrrr`.sz'LigatureSubstBuilder.add_subtable_breakN)rarbrcrir<r?rhr`rrrrr�s r�c@s0eZdZdZdd�Zdd�Zdd�Zdd �Zd S)�MultipleSubstBuildera�Builds a Multiple Substitution (GSUB2) lookup. 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If a mark filtering set is provided, `LOOKUP_FLAG_USE_MARK_FILTERING_SET` will be set on the lookup's flags. cCstj|||dd�i|_dS)Nr4re)r3r<�attachments)rr6r7rrrr<iszCursivePosBuilder.__init__cCstj||�o|j|jkS)N)r3r?r�)rr>rrrr?mszCursivePosBuilder.equalscCs x|D]}||f|j|<qWdS)akAdds attachment information to the cursive positioning lookup. Args: location: A string or tuple representing the location in the original source which produced this lookup. (Unused.) glyphs: A list of glyph names sharing these entry and exit anchor locations. entryAnchor: A ``otTables.Anchor`` object representing the entry anchor, or ``None`` if no entry anchor is present. exitAnchor: A ``otTables.Anchor`` object representing the exit anchor, or ``None`` if no exit anchor is present. N)r�)rr7r�entryAnchor� exitAnchorr�rrr�add_attachmentrs z CursivePosBuilder.add_attachmentcCst|j|j�}|j|g�S)z�Build the lookup. 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Users are expected to manually add marks and bases to the ``marks`` and ``bases`` attributes after the object has been initialized, e.g.:: builder.marks["acute"] = (0, a1) builder.marks["grave"] = (0, a1) builder.marks["cedilla"] = (1, a2) builder.bases["a"] = {0: a3, 1: a5} builder.bases["b"] = {0: a4, 1: a5} Attributes: font (``fontTools.TTLib.TTFont``): A font object. location: A string or tuple representing the location in the original source which produced this lookup. marks: An dictionary mapping a glyph name to a two-element tuple containing a mark class ID and ``otTables.Anchor`` object. bases: An dictionary mapping a glyph name to a dictionary of mark class IDs and ``otTables.Anchor`` object. lookupflag (int): The lookup's flag markFilterSet: Either ``None`` if no mark filtering set is used, or an integer representing the filtering set to be used for this lookup. If a mark filtering set is provided, `LOOKUP_FLAG_USE_MARK_FILTERING_SET` will be set on the lookup's flags. cCs"tj|||dd�i|_i|_dS)Nr4r)r3r<rD�bases)rr6r7rrrr<�szMarkBasePosBuilder.__init__cCs$tj||�o"|j|jko"|j|jkS)N)r3r?rDr�)rr>rrrr?�szMarkBasePosBuilder.equalscCs*dd�|jD�}|jdd�|jD��|S)NcSsi|] }d|�qS)rr)r"r�rrr� �sz8MarkBasePosBuilder.inferGlyphClasses..cSsi|] }d|�qS)rer)r"r�rrrr��s)r�r�rD)rr�rrrr@�sz$MarkBasePosBuilder.inferGlyphClassescsr|j|j��fdd�|jj�D�}i}x0|jj�D]"\}}�fdd�|j�D�||<q4Wt|||j�}|j|�S)z�Build the lookup. Returns: An ``otTables.Lookup`` object representing the mark-to-base positioning lookup. cs"i|]\}\}}�||f|�qSrr)r"rF�mc�anchor)�markClassesrrr��sz,MarkBasePosBuilder.build..csi|]\}}|�|�qSrr)r"r�r�)r�rrr��s)rGrDr�r��buildMarkBasePosrrB)rrDr�r��anchorsr'r)r�rrh�s zMarkBasePosBuilder.buildN)rarbrcrir<r?r@rhrrrrr��s r�c@s0eZdZdZdd�Zdd�Zdd�Zdd �Zd S)�MarkLigPosBuilderacBuilds a Mark-To-Ligature Positioning (GPOS5) lookup. Users are expected to manually add marks and bases to the ``marks`` and ``ligatures`` attributes after the object has been initialized, e.g.:: builder.marks["acute"] = (0, a1) builder.marks["grave"] = (0, a1) builder.marks["cedilla"] = (1, a2) builder.ligatures["f_i"] = [ { 0: a3, 1: a5 }, # f { 0: a4, 1: a5 } # i ] Attributes: font (``fontTools.TTLib.TTFont``): A font object. location: A string or tuple representing the location in the original source which produced this lookup. marks: An dictionary mapping a glyph name to a two-element tuple containing a mark class ID and ``otTables.Anchor`` object. ligatures: An dictionary mapping a glyph name to an array with one element for each ligature component. Each array element should be a dictionary mapping mark class IDs to ``otTables.Anchor`` objects. lookupflag (int): The lookup's flag markFilterSet: Either ``None`` if no mark filtering set is used, or an integer representing the filtering set to be used for this lookup. If a mark filtering set is provided, `LOOKUP_FLAG_USE_MARK_FILTERING_SET` will be set on the lookup's flags. cCs"tj|||dd�i|_i|_dS)Nr4�)r3r<rDr�)rr6r7rrrr<�szMarkLigPosBuilder.__init__cCs$tj||�o"|j|jko"|j|jkS)N)r3r?rDr�)rr>rrrr?�szMarkLigPosBuilder.equalscCs*dd�|jD�}|jdd�|jD��|S)NcSsi|] }d|�qS)rr)r"r�rrrr��sz7MarkLigPosBuilder.inferGlyphClasses..cSsi|] }d|�qS)rer)r"r�rrrr��s)r�r�rD)rr�rrrr@�sz#MarkLigPosBuilder.inferGlyphClassescs�|j|j��fdd�|jj�D�}i}xL|jj�D]>\}}g||<x,|D]$}||j�fdd�|j�D��qJWq4Wt|||j�}|j|�S)z�Build the lookup. Returns: An ``otTables.Lookup`` object representing the mark-to-ligature positioning lookup. cs"i|]\}\}}�||f|�qSrr)r"rFr�r�)r�rrr�sz+MarkLigPosBuilder.build..csi|]\}}|�|�qSrr)r"r��a)r�rrr�s)rGrDr�r�rJ�buildMarkLigPosrrB)rrD�ligs�lig� componentsr�r'r)r�rrh�s (zMarkLigPosBuilder.buildN)rarbrcrir<r?r@rhrrrrr��s r�c@s0eZdZdZdd�Zdd�Zdd�Zdd �Zd S)�MarkMarkPosBuildera�Builds a Mark-To-Mark Positioning (GPOS6) lookup. Users are expected to manually add marks and bases to the ``marks`` and ``baseMarks`` attributes after the object has been initialized, e.g.:: builder.marks["acute"] = (0, a1) builder.marks["grave"] = (0, a1) builder.marks["cedilla"] = (1, a2) builder.baseMarks["acute"] = {0: a3} Attributes: font (``fontTools.TTLib.TTFont``): A font object. location: A string or tuple representing the location in the original source which produced this lookup. marks: An dictionary mapping a glyph name to a two-element tuple containing a mark class ID and ``otTables.Anchor`` object. baseMarks: An dictionary mapping a glyph name to a dictionary containing one item: a mark class ID and a ``otTables.Anchor`` object. lookupflag (int): The lookup's flag markFilterSet: Either ``None`` if no mark filtering set is used, or an integer representing the filtering set to be used for this lookup. If a mark filtering set is provided, `LOOKUP_FLAG_USE_MARK_FILTERING_SET` will be set on the lookup's flags. cCs"tj|||dd�i|_i|_dS)Nr4r�)r3r<rD� baseMarks)rr6r7rrrr<+szMarkMarkPosBuilder.__init__cCs$tj||�o"|j|jko"|j|jkS)N)r3r?rDr�)rr>rrrr?0szMarkMarkPosBuilder.equalscCs*dd�|jD�}|jdd�|jD��|S)NcSsi|] }d|�qS)rer)r"r�rrrr�8sz8MarkMarkPosBuilder.inferGlyphClasses..cSsi|] }d|�qS)rer)r"r�rrrr�9s)r�r�rD)rr�rrrr@7sz$MarkMarkPosBuilder.inferGlyphClassescs��j�j��t�j��jd�}�fdd��jj�D�}tj�}d|_t ��|_ t|�j�|_ t�j�j�|_t|�j�|_tj�|_t |jj�|j_g|j_x6|jjD]*��fdd�|D�}|jjjt|��q�W�j|g�S)z�Build the lookup. Returns: An ``otTables.Lookup`` object representing the mark-to-mark positioning lookup. )rcs"i|]\}\}}�||f|�qSrr)r"rFr�r�)r�rrr�Esz,MarkMarkPosBuilder.build..rcsg|]}�j�j|��qSr)r��get)r"r�)�baserrrr$Ssz,MarkMarkPosBuilder.build..)rGrDrrCr�r�rZMarkMarkPosr�r,� ClassCountrrZ Mark1Coverager�Z Mark2Coverage�buildMarkArrayZ Mark1ArrayZ Mark2ArrayrZ Mark2Count�Mark2RecordrJ�buildMark2RecordrB)rZ markClassListrDr#r�r)r�r�rrrh<s" zMarkMarkPosBuilder.buildN)rarbrcrir<r?r@rhrrrrr�s r�c@s0eZdZdZdd�Zdd�Zdd�Zdd �Zd S)�ReverseChainSingleSubstBuildera[Builds a Reverse Chaining Contextual Single Substitution (GSUB8) lookup. Users are expected to manually add substitutions to the ``substitutions`` attribute after the object has been initialized, e.g.:: # reversesub [a e n] d' by d.alt; prefix = [ ["a", "e", "n"] ] suffix = [] mapping = { "d": "d.alt" } builder.substitutions.append( (prefix, suffix, mapping) ) Attributes: font (``fontTools.TTLib.TTFont``): A font object. location: A string or tuple representing the location in the original source which produced this lookup. substitutions: A three-element tuple consisting of a prefix sequence, a suffix sequence, and a dictionary of single substitutions. lookupflag (int): The lookup's flag markFilterSet: Either ``None`` if no mark filtering set is used, or an integer representing the filtering set to be used for this lookup. If a mark filtering set is provided, `LOOKUP_FLAG_USE_MARK_FILTERING_SET` will be set on the lookup's flags. cCstj|||dd�g|_dS)Nr5r )r3r<ro)rr6r7rrrr<rsz'ReverseChainSingleSubstBuilder.__init__cCstj||�o|j|jkS)N)r3r?ro)rr>rrrr?vsz%ReverseChainSingleSubstBuilder.equalscs�g}xx|jD]n\}}�tj�}d|_|j||�|j||�t�j�|j�|_ t ��|_�fdd�|j jD�|_ |j|�qW|j|�S)z�Build the lookup. Returns: An ``otTables.Lookup`` object representing the chained contextual substitution lookup. rcsg|]}�|�qSrr)r"rU)r\rrr$�sz8ReverseChainSingleSubstBuilder.build..)rorZReverseChainSingleSubstr�rOrSrrCrrr,rWrZ SubstituterJrB)rr'rKrQr#r)r\rrhys z$ReverseChainSingleSubstBuilder.buildcCsdS)Nr)rr7rrrr`�sz1ReverseChainSingleSubstBuilder.add_subtable_breakN)rarbrcrir<r?rhr`rrrrr�Xs r�c@s8eZdZdZdd�Zdd�Zdd�Zdd �Zd d�ZdS) r�adBuilds a Single Substitution (GSUB1) lookup. Users are expected to manually add substitutions to the ``mapping`` attribute after the object has been initialized, e.g.:: # sub x by y; builder.mapping["x"] = "y" Attributes: font (``fontTools.TTLib.TTFont``): A font object. location: A string or tuple representing the location in the original source which produced this lookup. mapping: A dictionary mapping a single glyph name to another glyph name. lookupflag (int): The lookup's flag markFilterSet: Either ``None`` if no mark filtering set is used, or an integer representing the filtering set to be used for this lookup. If a mark filtering set is provided, `LOOKUP_FLAG_USE_MARK_FILTERING_SET` will be set on the lookup's flags. cCstj|||dd�t�|_dS)Nr5r)r3r<rr\)rr6r7rrrr<�szSingleSubstBuilder.__init__cCstj||�o|j|jkS)N)r3r?r\)rr>rrrr?�szSingleSubstBuilder.equalscCs|j|jt�}|j|�S)z�Build the lookup. 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Attributes: builder (PairPosBuilder): A pair positioning lookup builder. cCs(||_d\|_|_i|_d|_g|_dS)NF)NN)�builder_� classDef1_� classDef2_�values_�forceSubtableBreak_� subtables_)r�builderrrrr<�s z$ClassPairPosSubtableBuilder.__init__cCs�|jo2|jdk o2|jj|�o2|jdk o2|jj|�}|s^|j�tdd�|_tdd�|_i|_|jj|�|jj|�||f|j||f<dS)a~Add a pair positioning rule. Args: gc1: A set of glyph names for the "left" glyph value1: An ``otTables.ValueRecord`` object for the left glyph's positioning. gc2: A set of glyph names for the "right" glyph value2: An ``otTables.ValueRecord`` object for the right glyph's positioning. NT)r}F)rr�r�r��flush_r~rr�)r�gc1�value1�gc2�value2Z mergeablerrr�addPair�s z#ClassPairPosSubtableBuilder.addPaircCs d|_dS)z-Add an explicit subtable break at this point.TN)r)rrrr�addSubtableBreak�sz,ClassPairPosSubtableBuilder.addSubtableBreakcCs|j�|jS)z>Return the list of ``otTables.PairPos`` subtables constructed.)rr)rrrrr'�sz%ClassPairPosSubtableBuilder.subtablescCsL|jdks|jdkrdSt|j|jj�}|jdkr6dS|jj|�d|_ dS)NF) r�r��buildPairPosClassesSubtablerr�rrrrJr)rr#rrrr�s z"ClassPairPosSubtableBuilder.flush_N) rarbrcrir<r r r'rrrrrr��s r�c@s@eZdZdZdd�Zdd�Zdd�Zdd �Zd d�Zdd �Z dS)�PairPosBuildera�Builds a Pair Positioning (GPOS2) lookup. Attributes: font (``fontTools.TTLib.TTFont``): A font object. location: A string or tuple representing the location in the original source which produced this lookup. pairs: An array of class-based pair positioning tuples. Usually manipulated with the :meth:`addClassPair` method below. glyphPairs: A dictionary mapping a tuple of glyph names to a tuple of ``otTables.ValueRecord`` objects. Usually manipulated with the :meth:`addGlyphPair` method below. lookupflag (int): The lookup's flag markFilterSet: Either ``None`` if no mark filtering set is used, or an integer representing the filtering set to be used for this lookup. If a mark filtering set is provided, `LOOKUP_FLAG_USE_MARK_FILTERING_SET` will be set on the lookup's flags. cCs(tj|||dd�g|_i|_i|_dS)Nr4r)r3r<�pairs� glyphPairs� locations)rr6r7rrrr<szPairPosBuilder.__init__cCs|jj||||f�dS)aAdd a class pair positioning rule to the current lookup. Args: location: A string or tuple representing the location in the original source which produced this rule. Unused. glyphclass1: A set of glyph names for the "left" glyph in the pair. value1: A ``otTables.ValueRecord`` for positioning the left glyph. glyphclass2: A set of glyph names for the "right" glyph in the pair. value2: A ``otTables.ValueRecord`` for positioning the right glyph. N)r rJ)rr7�glyphclass1r�glyphclass2rrrr�addClassPairszPairPosBuilder.addClassPairc CsV||f}|jj|d�}|dk r:|j|}tjd|||�n||f|j|<||j|<dS)a�Add a glyph pair positioning rule to the current lookup. Args: location: A string or tuple representing the location in the original source which produced this rule. glyph1: A glyph name for the "left" glyph in the pair. value1: A ``otTables.ValueRecord`` for positioning the left glyph. glyph2: A glyph name for the "right" glyph in the pair. value2: A ``otTables.ValueRecord`` for positioning the right glyph. NzGAlready defined position for pair %s %s at %s; choosing the first value)rr�rr^�debug) rr7Zglyph1r�glyph2rrZoldValue�otherLocrrr�addGlyphPair&s zPairPosBuilder.addGlyphPaircCs |jj|j|j|j|jf�dS)N)r rJr[)rr7rrrr`Bs z!PairPosBuilder.add_subtable_breakcCs$tj||�o"|j|jko"|j|jkS)N)r3r?rr )rr>rrrr?LszPairPosBuilder.equalsc Cs i}d}x�|jD]�\}}}}||jkr8|dk r|j�qd\}}|rL|j�}|rX|j�}|j||f�}|dkr�t|�}||||f<|j||||�qWg} |jr�| jt |j|j ��x&t|j��D]} | j|| j ��q�W|j| �}tjjtt�}|�r|dk�rtjd�t|j||�|S)z�Build the lookup. Returns: An ``otTables.Lookup`` object representing the pair positioning lookup. Nr�0zCompacting GPOS...)rr)r r[r � getFormatr�r�r rr��buildPairPosGlyphsrrrCr'rB�os�environrr r^�inforr6) rZbuildersrrrrrZ valFormat1Z valFormat2r'rr��moderrrrhSs8 zPairPosBuilder.buildN) rarbrcrir<rrr`r?rhrrrrr�s rc@s8eZdZdZdd�Zdd�Zdd�Zdd �Zd d�ZdS) r�a�Builds a Single Positioning (GPOS1) lookup. 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As part of building mark-to-base positioning rules, you will need to define a ``BaseArray`` record, which "defines for each base glyph an array of anchors, one for each mark class." This function builds the base array subtable. Example:: bases = {"a": {0: a3, 1: a5}, "b": {0: a4, 1: a5}} basearray = buildBaseArray(bases, 2, font.getReverseGlyphMap()) Args: bases (dict): A dictionary mapping anchors to glyphs; the keys being glyph names, and the values being dictionaries mapping mark class ID to the appropriate ``otTables.Anchor`` object used for attaching marks of that class. numMarkClasses (int): The total number of mark classes for which anchors are defined. glyphMap: a glyph name to ID map, typically returned from ``font.getReverseGlyphMap()``. Returns: An ``otTables.BaseArray`` object. )rcsg|]}�j|��qSr)r�)r"� markClass)�brrr$�sz"buildBaseArray..) r� BaseArray� BaseRecordrr�rangerJ�buildBaseRecordr,Z BaseCount)r��numMarkClassesrrr�r�r)r(r�buildBaseArraycsr.cCstj�}||_|S)N)rr*Z BaseAnchor)r�rrrrr,�sr,cCs|sdStj�}||_|S)aBuilds a component record. As part of building mark-to-ligature positioning rules, you will need to define ``ComponentRecord`` objects, which contain "an array of offsets... to the Anchor tables that define all the attachment points used to attach marks to the component." This function builds the component record. Args: anchors: A list of ``otTables.Anchor`` objects or ``None``. Returns: A ``otTables.ComponentRecord`` object or ``None`` if no anchors are supplied. N)r�ComponentRecordZLigatureAnchor)r�rrrr�buildComponentRecord�s r0cCsz|sdStj�}d|_t|j�|�|_g|_x<|jjD]0}||\}}tj�}||_||_ |jj |�q6Wt|j�|_|S)ayBuilds a cursive positioning (GPOS3) subtable. Cursive positioning lookups are made up of a coverage table of glyphs, and a set of ``EntryExitRecord`` records containing the anchors for each glyph. This function builds the cursive positioning subtable. Example:: subtable = buildCursivePosSubtable({ "AlifIni": (None, buildAnchor(0, 50)), "BehMed": (buildAnchor(500,250), buildAnchor(0,50)), # ... }, font.getReverseGlyphMap()) Args: attach (dict): A mapping between glyph names and a tuple of two ``otTables.Anchor`` objects representing entry and exit anchors. glyphMap: a glyph name to ID map, typically returned from ``font.getReverseGlyphMap()``. Returns: An ``otTables.CursivePos`` object, or ``None`` if the attachment dictionary was empty. Nr) rZ CursivePosr�rrCrZEntryExitRecordrZEntryAnchorZ ExitAnchorrJr,ZEntryExitCount)�attachrrr�r�r�r�rrrr��sr�cs��sdStj�}�j�}t|�|_}t|�|_}d|koF|knsPt��fdd�t||d�D�|_ }t|�}t|�}|dkr�|dks�t�|d kr�|d kr�d|_ n|dkr�|dkr�d |_ nd|_ |S)a�Builds a Device record as part of a ValueRecord or Anchor. Device tables specify size-specific adjustments to value records and anchors to reflect changes based on the resolution of the output. For example, one could specify that an anchor's Y position should be increased by 1 pixel when displayed at 8 pixels per em. This routine builds device records. Args: deltas: A dictionary mapping pixels-per-em sizes to the delta adjustment in pixels when the font is displayed at that size. Returns: An ``otTables.Device`` object if any deltas were supplied, or ``None`` otherwise. Nrcsg|]}�j|d��qS)r)r�)r"r�)�deltasrrr$�szbuildDevice..r��rer� r i��i��)r�DevicerCr�� StartSize�max�EndSizer*r+� DeltaValue�DeltaFormat)r2rrCZ startSizeZendSizeZdeltaValuesZmaxDeltaZminDeltar)r2r�buildDevice�s""r=csxtj�}g|_xXt||jd�D]F}g}x,||D] �|j�fdd�t|�D��q0W|jjt|��qWt|j�|_ |S)a6Builds a LigatureArray subtable. As part of building a mark-to-ligature lookup, you will need to define the set of anchors (for each mark class) on each component of the ligature where marks can be attached. For example, for an Arabic divine name ligature (lam lam heh), you may want to specify mark attachment positioning for superior marks (fatha, etc.) and inferior marks (kasra, etc.) on each glyph of the ligature. This routine builds the ligature array record. Example:: buildLigatureArray({ "lam-lam-heh": [ { 0: superiorAnchor1, 1: inferiorAnchor1 }, # attach points for lam1 { 0: superiorAnchor2, 1: inferiorAnchor2 }, # attach points for lam2 { 0: superiorAnchor3, 1: inferiorAnchor3 }, # attach points for heh ] }, 2, font.getReverseGlyphMap()) Args: ligs (dict): A mapping of ligature names to an array of dictionaries: for each component glyph in the ligature, an dictionary mapping mark class IDs to anchors. numMarkClasses (int): The number of mark classes. glyphMap: a glyph name to ID map, typically returned from ``font.getReverseGlyphMap()``. Returns: An ``otTables.LigatureArray`` object if deltas were supplied. )rcsg|]}�j|��qSr)r�)r"r�)� componentrrr$sz&buildLigatureArray..) r� LigatureArray�LigatureAttachrrrJr+�buildLigatureAttachr,Z LigatureCount)r�r-rrr�r�r)r>r�buildLigatureArray�s rBcCs(tj�}dd�|D�|_t|j�|_|S)NcSsg|]}t|��qSr)r0)r"r�rrrr$!sz'buildLigatureAttach..)rr@r/r,ZComponentCount)r�rrrrrAsrAcCs\tj�}g|_x.) rZMarkBasePosr�r�MarkCoverager�rCr9�valuesr�ZBaseCoverager.r))rDr�rrrrrrF|srFcCst|||�gS)a�Build a list of MarkLigPos (GPOS5) subtables. This routine turns a set of marks and ligatures into a list of mark-to-ligature positioning subtables. Currently the list will contain a single subtable containing all marks and ligatures, although at a later date it may return the optimal list of subtables subsetting the marks and ligatures into groups which save space. See :func:`buildMarkLigPosSubtable` below. Note that if you are implementing a layout compiler, you may find it more flexible to use :py:class:`fontTools.otlLib.lookupBuilders.MarkLigPosBuilder` instead. Example:: # a1, a2, a3, a4, a5 = buildAnchor(500, 100), ... marks = { "acute": (0, a1), "grave": (0, a1), "cedilla": (1, a2) } ligs = { "f_i": [ { 0: a3, 1: a5 }, # f { 0: a4, 1: a5 } # i ], # "c_t": [{...}, {...}] } markligposes = buildMarkLigPos(marks, ligs, font.getReverseGlyphMap()) Args: marks (dict): A dictionary mapping anchors to glyphs; the keys being glyph names, and the values being a tuple of mark class number and an ``otTables.Anchor`` object representing the mark's attachment point. (See :func:`buildMarkArray`.) ligs (dict): A mapping of ligature names to an array of dictionaries: for each component glyph in the ligature, an dictionary mapping mark class IDs to anchors. (See :func:`buildLigatureArray`.) glyphMap: a glyph name to ID map, typically returned from ``font.getReverseGlyphMap()``. Returns: A list of ``otTables.MarkLigPos`` objects. )�buildMarkLigPosSubtable)rDr�rrrrr��s2r�cCsbtj�}d|_t||�|_t||�|_tdd�|j�D��d|_ t||�|_ t||j |�|_|S)a`Build a single MarkLigPos (GPOS5) subtable. This builds a mark-to-base lookup subtable containing all of the referenced marks and bases. See :func:`buildMarkLigPos`. Args: marks (dict): A dictionary mapping anchors to glyphs; the keys being glyph names, and the values being a tuple of mark class number and an ``otTables.Anchor`` object representing the mark's attachment point. (See :func:`buildMarkArray`.) ligs (dict): A mapping of ligature names to an array of dictionaries: for each component glyph in the ligature, an dictionary mapping mark class IDs to anchors. (See :func:`buildLigatureArray`.) glyphMap: a glyph name to ID map, typically returned from ``font.getReverseGlyphMap()``. Returns: A ``otTables.MarkLigPos`` object. rcSsg|]\}}|�qSrr)r"r�r�rrrr$�sz+buildMarkLigPosSubtable..) rZ MarkLigPosr�rrGr�rCr9rHr�ZLigatureCoveragerBr?)rDr�rrrrrrI�srIcCs6t|t�st�t|tj�st�tj�}||_||_|S)N)r.r/r*rr#rDr�Z MarkAnchor)�classIDr�rrrrrE�srEcCstj�}||_|S)N)rr�ZMark2Anchor)r�rrrrr��sr�cCsF|dk r|Sd}x0|D](}|dk r||dk r|||j�O}qW|S)Nr)r)�frHr��maskr�rrr�_getValueFormat�s rMcCsft�}tdd�}tdd�}x2t|�D]&\}}|j|�|j|�|j|�q$Wtj�} d| _t||j �d�}| _ t||j �d�}| _t||�| _ |j�| _|j�| _|j�} |j�}g| _x�| D]�}tj�} g| _| jj| �xd|D]\}tj�}|j||fd �\}}|�rt||d�nd|_|�r2t||d�nd|_| jj|�q�Wq�Wt| j�| _t|�| _| S) a�Builds a class pair adjustment (GPOS2 format 2) subtable. Kerning tables are generally expressed as pair positioning tables using class-based pair adjustments. This routine builds format 2 PairPos subtables. Note that if you are implementing a layout compiler, you may find it more flexible to use :py:class:`fontTools.otlLib.lookupBuilders.ClassPairPosSubtableBuilder` instead, as this takes care of ensuring that the supplied pairs can be formed into non-overlapping classes and emitting individual subtables whenever the non-overlapping requirement means that a new subtable is required. Example:: pairs = {} pairs[( [ "K", "X" ], [ "W", "V" ] )] = ( buildValue(xAdvance=+5), buildValue() ) # pairs[(... , ...)] = (..., ...) pairpos = buildPairPosClassesSubtable(pairs, font.getReverseGlyphMap()) Args: pairs (dict): Pair positioning data; the keys being a two-element tuple of lists of glyphnames, and the values being a two-element tuple of ``otTables.ValueRecord`` objects. glyphMap: a glyph name to ID map, typically returned from ``font.getReverseGlyphMap()``. valueFormat1: Force the "left" value records to the given format. valueFormat2: Force the "right" value records to the given format. Returns: A ``otTables.PairPos`` object. T)r}FrrrN)�src�valueFormat)NN)rr~rr�r�r�PairPosr�rMrH�ValueFormat1�ValueFormat2rrrhZ ClassDef1Z ClassDef2r{ZClass1RecordZClass2RecordrJr�r�Value1�Value2r,ZClass1CountZClass2Count)r r�valueFormat1�valueFormat2rNZ classDef1Z classDef2rrrZclasses1Zclasses2�c1Zrec1�c2Zrec2�val1�val2rrrr s<' rc s�i}xd|j�D]X\\}}\}}|dk r.|j�nd}|dk rB|j�nd}|j||fi�} ||f| ||f<qW�fdd�t|j��D�S)a�Builds a list of glyph-based pair adjustment (GPOS2 format 1) subtables. This organises a list of pair positioning adjustments into subtables based on common value record formats. Note that if you are implementing a layout compiler, you may find it more flexible to use :py:class:`fontTools.otlLib.lookupBuilders.PairPosBuilder` instead. Example:: pairs = { ("K", "W"): ( buildValue(xAdvance=+5), buildValue() ), ("K", "V"): ( buildValue(xAdvance=+5), buildValue() ), # ... } subtables = buildPairPosGlyphs(pairs, font.getReverseGlyphMap()) Args: pairs (dict): Pair positioning data; the keys being a two-element tuple of glyphnames, and the values being a two-element tuple of ``otTables.ValueRecord`` objects. glyphMap: a glyph name to ID map, typically returned from ``font.getReverseGlyphMap()``. Returns: A list of ``otTables.PairPos`` objects. Nrcs"g|]\\}}}t|�||��qSr)�buildPairPosGlyphsSubtable)r"�formatA�formatB�pos)rrrr$wsz&buildPairPosGlyphs..)r�rr�r) r rrM�glyphA�glyphB�valA�valBr\r]r^r)rrrPs rcsLtj�}d|_t||j�d�}|_t||j�d�}|_i}x4|j�D](\\}}\}} |j|g�j ||| f�qHWt dd�|j�D��|_g|_ x�|jjD]�} tj �}g|_|j j |�xnt|| �fdd�d�D]R\}} }tj�}||_|r�t| |d�nd |_|�rt||d�nd |_|jj |�q�Wt|j�|_q�Wt|j �|_|S) a�Builds a single glyph-based pair adjustment (GPOS2 format 1) subtable. This builds a PairPos subtable from a dictionary of glyph pairs and their positioning adjustments. See also :func:`buildPairPosGlyphs`. Note that if you are implementing a layout compiler, you may find it more flexible to use :py:class:`fontTools.otlLib.lookupBuilders.PairPosBuilder` instead. Example:: pairs = { ("K", "W"): ( buildValue(xAdvance=+5), buildValue() ), ("K", "V"): ( buildValue(xAdvance=+5), buildValue() ), # ... } pairpos = buildPairPosGlyphsSubtable(pairs, font.getReverseGlyphMap()) Args: pairs (dict): Pair positioning data; the keys being a two-element tuple of glyphnames, and the values being a two-element tuple of ``otTables.ValueRecord`` objects. glyphMap: a glyph name to ID map, typically returned from ``font.getReverseGlyphMap()``. valueFormat1: Force the "left" value records to the given format. valueFormat2: Force the "right" value records to the given format. Returns: A ``otTables.PairPos`` object. rrcSsh|]\}}|�qSrr)r"rUr�rrr� �sz-buildPairPosGlyphsSubtable..cs�|dS)Nrr)rs)rrr��sz,buildPairPosGlyphsSubtable..)r)rNrON)rrPr�rMrHrQrRr�r�rJrrCrZPairSetrZPairValueRecordrZSecondGlyphrrSrTr,ZPairValueCountZPairSetCount)r rrUrVrrMr_r`rarbr�ZpsrrYrZZpvrr)rrr[|s, $r[cs�gt�}�iii}}�xL|j�D]@\}}t|��|j�g�j|�|j�dg�j��|��<q&WxV|j�D]J\�}t|�t��dkrt��fdd�|D�}|jt|��j��qtWx~|j�D]r\} } �fdd�| D�}t|�dkr�i}x,|D]$�|j ��fdd �|�D��q�W|jt|��j |�q�WxL|j�D]@\�}��k�rLx |D]} t| ��i��}�qdW|j|��qLW|j �fd d�d�|S) a�Builds a list of single adjustment (GPOS1) subtables. This builds a list of SinglePos subtables from a dictionary of glyph names and their positioning adjustments. The format of the subtables are determined to optimize the size of the resulting subtables. See also :func:`buildSinglePosSubtable`. Note that if you are implementing a layout compiler, you may find it more flexible to use :py:class:`fontTools.otlLib.lookupBuilders.SinglePosBuilder` instead. Example:: mapping = { "V": buildValue({ "xAdvance" : +5 }), # ... } subtables = buildSinglePos(pairs, font.getReverseGlyphMap()) Args: mapping (dict): A mapping between glyphnames and ``otTables.ValueRecord`` objects. glyphMap: a glyph name to ID map, typically returned from ``font.getReverseGlyphMap()``. Returns: A list of ``otTables.SinglePos`` objects. rr�csi|]}��|�qSrr)r"rU)rrHrrr��sz"buildSinglePos..csg|]}|�kr|�qSrr)r"�k)�handledrrr$�sz"buildSinglePos..rc3s|]}|��fVqdS)Nr)r"rU)rerHrrr(�sz!buildSinglePos..cs t|��S)N)�_getSinglePosTableKey)r&)rrrrd sz buildSinglePos..)r)rr��_getSinglePosValueKeyr�rJr,�_getSinglePosValueSize�buildSinglePosSubtabler�r��sort)r\rr�Z coverages�masksr�r�rZformat1MappingrOrC�f2Zformat2MappingrUr#r)rrfrerrHrr�s6 $ rcs�tj�}t�j�|�|_ttjdd��j�D�d��|_ ��fdd�|jj D��t�fdd��D��r�d|_|j dkr��d|_ q�d|_ nd |_�|_ t|j �|_|S) a�Builds a single adjustment (GPOS1) subtable. This builds a list of SinglePos subtables from a dictionary of glyph names and their positioning adjustments. The format of the subtable is determined to optimize the size of the output. See also :func:`buildSinglePos`. Note that if you are implementing a layout compiler, you may find it more flexible to use :py:class:`fontTools.otlLib.lookupBuilders.SinglePosBuilder` instead. Example:: mapping = { "V": buildValue({ "xAdvance" : +5 }), # ... } subtable = buildSinglePos(pairs, font.getReverseGlyphMap()) Args: mapping (dict): A mapping between glyphnames and ``otTables.ValueRecord`` objects. glyphMap: a glyph name to ID map, typically returned from ``font.getReverseGlyphMap()``. Returns: A ``otTables.SinglePos`` object. cSsg|]}|j��qSr)r)r"�vrrrr$& sz*buildSinglePosSubtable..rcsg|]}t�|�d��qS))rNrO)r)r"rU)rOrHrrr$' sc3s|]}|�dkVqdS)rNr)r"rn)�valueRecordsrrr(( sz)buildSinglePosSubtable..rNr)r� SinglePosrrCrrr/�__or__rHZValueFormatrr)r��Valuer,Z ValueCount)rHrrr)rOrorHrrj s" rjcCs2t|tj�st|��|jj}t|�||dfS)Nr)r.rrpr*rrr,)rLrrrrrrg5 srgcCs�t|t�st|��dg}}xT|jj�D]F\}}t|tj�rP|j|t|�f�n|j||f�|t |dO}q(W|j �|jd|�t|�S)Nr) r.rr*�__dict__r�rr7rJ�_makeDeviceTuplerrkr��tuple)ZvalueRecordrOr��namer�rrrrh; s rh�_DeviceTuplez(DeltaFormat StartSize EndSize DeltaValuecCs(t|j|j|j|jd@rfnt|j��S)Ni�)rwr<r8r:rur;)ZdevicerrrrtM s rtcCsHd}x>|dd�D].\}}t|t�r8|t|j�d7}q|d7}qW|S)Nrrre)r.rwr,r;)ZvalueKey�countr�rnrrrriW s ricCs,t�}x |j�D]\}}t|||�qW|S)a�Builds a positioning value record. Value records are used to specify coordinates and adjustments for positioning and attaching glyphs. Many of the positioning functions in this library take ``otTables.ValueRecord`` objects as arguments. This function builds value records from dictionaries. Args: value (dict): A dictionary with zero or more of the following keys: - ``xPlacement`` - ``yPlacement`` - ``xAdvance`` - ``yAdvance`` - ``xPlaDevice`` - ``yPlaDevice`` - ``xAdvDevice`` - ``yAdvDevice`` Returns: An ``otTables.ValueRecord`` object. )rr�r�)r�rrernrrr� buildValueb srycsH�sdStj�}t�j�|�|_�fdd�|jjD�|_t|j�|_|S)a�Builds an AttachList subtable. A GDEF table may contain an Attachment Point List table (AttachList) which stores the contour indices of attachment points for glyphs with attachment points. This routine builds AttachList subtables. Args: attachPoints (dict): A mapping between glyph names and a list of contour indices. Returns: An ``otTables.AttachList`` object if attachment points are supplied, or ``None`` otherwise. Ncsg|]}t�|��qSr)�buildAttachPoint)r"rU)�attachPointsrrr$� sz#buildAttachList..) rZ AttachListrrCrr�AttachPointr,rW)r{rrr)r{r�buildAttachList� sr}cCs.|sdStj�}tt|��|_t|j�|_|S)N)rr|rrZ PointIndexr,Z PointCount)�pointsrrrrrz� srzcCstj�}d|_||_|S)Nr)r� CaretValuer�Z Coordinate)Zcoordrrrr�buildCaretValueForCoord� sr�cCstj�}d|_||_|S)Nr)rrr�ZCaretValuePoint)r%rrrr�buildCaretValueForPoint� sr�cs��rt�j��nt�}�r(|j�j��fdd�|D��dd��j�D��sVdStj�}t�j�|�|_�fdd�|jjD�|_ t |j �|_|S)a�Builds a ligature caret list table. Ligatures appear as a single glyph representing multiple characters; however when, for example, editing text containing a ``f_i`` ligature, the user may want to place the cursor between the ``f`` and the ``i``. The ligature caret list in the GDEF table specifies the position to display the "caret" (the character insertion indicator, typically a flashing vertical bar) "inside" the ligature to represent an insertion point. The insertion positions may be specified either by coordinate or by contour point. Example:: coords = { "f_f_i": [300, 600] # f|fi cursor at 300 units, ff|i cursor at 600. } points = { "c_t": [28] # c|t cursor appears at coordinate of contour point 28. } ligcaretlist = buildLigCaretList(coords, points, font.getReverseGlyphMap()) Args: coords: A mapping between glyph names and a list of coordinates for the insertion point of each ligature component after the first one. points: A mapping between glyph names and a list of contour points for the insertion point of each ligature component after the first one. glyphMap: a glyph name to ID map, typically returned from ``font.getReverseGlyphMap()``. Returns: A ``otTables.LigCaretList`` object if any carets are present, or ``None`` otherwise.cs$i|]}t�j|��j|��|�qSr)� buildLigGlyphr�)r"rU)�coordsr~rrr�� sz%buildLigCaretList..cSsi|]\}}|dk r||�qS)Nr)r"rUr�rrrr�� sNcsg|]}�|�qSrr)r"rU)�caretsrrr$� sz%buildLigCaretList..)rrCr�r�rZLigCaretListrrrr"r,Z LigGlyphCount)r�r~rrrr)r�r�r~r�buildLigCaretList� s r�cCsbg}|r |jdd�t|�D��|r<|jdd�t|�D��|sDdStj�}||_t|j�|_|S)NcSsg|]}t|��qSr)r�)r"r�rrrr$� sz!buildLigGlyph..cSsg|]}t|��qSr)r�)r"rMrrrr$� s)r�rrr"rr,Z CaretCount)r�r~r�rrrrr�� sr�cs:|sdStj�}d|_�fdd�|D�|_t|j�|_|S)aBuilds a mark glyph sets definition table. OpenType Layout lookups may choose to use mark filtering sets to consider or ignore particular combinations of marks. These sets are specified by setting a flag on the lookup, but the mark filtering sets are defined in the ``GDEF`` table. This routine builds the subtable containing the mark glyph set definitions. Example:: set0 = set("acute", "grave") set1 = set("caron", "grave") markglyphsets = buildMarkGlyphSetsDef([set0, set1], font.getReverseGlyphMap()) Args: markSets: A list of sets of glyphnames. glyphMap: a glyph name to ID map, typically returned from ``font.getReverseGlyphMap()``. Returns An ``otTables.MarkGlyphSetsDef`` object. Nrcsg|]}t|��qSr)r)r"�m)rrrr$ sz)buildMarkGlyphSetsDef..)rZMarkGlyphSetsDefZMarkSetTableFormatrr,ZMarkSetCount)ZmarkSetsrrr)rr�buildMarkGlyphSetsDef� sr�c@s8eZdZdZdd�Zdd�Zdd�Zdd �Zd d�ZdS) r~z$Helper for building ClassDef tables.cCst�|_i|_||_dS)N)r�classes_�glyphs_� useClass0_)rr}rrrr< szClassDefBuilder.__init__cCsLt|ttf�rt|�}t|�}||jkr,dSx|D]}||jkr2dSq2WdS)NTF)r.r� frozensetrrur�r�)rrr�rrrr� s zClassDefBuilder.canAddcCspt|ttf�rt|�}t|�}||jkr,dS|jj|�x2|D]*}||jkr^td|�d�d��||j|<q>WdS)NzGlyph z is already present in class.) r.rr�rrur�r�r�r)rrr�rrrr�& s zClassDefBuilder.addcCs,t|jdd�dd�}|js(|jdt��|S)NcSst|�|fS)N)r,)rRrrrrdA sz)ClassDefBuilder.classes..T)r�reverser)rr�r�r�r�)rr�rrrr{4 s zClassDefBuilder.classescCsPi}x8t|j��D](\}}|dkr$qx|D]}|||<q*WqWtj�}||_|S)Nr)r�r{rr�r�)rZglyphClassesrJrr�ZclassDefrrrrhF s zClassDefBuilder.buildN) rarbrcrir<r�r�r{rhrrrrr~ sr~li��cCs�tjd�|d<tj�}|d_|d}t||�|_t||�\}}|sNd|_nd|_t |||�}||}tj �} || _d|_| |_ t|�|_|r�tj�} || _| |_t|�|_dS)a�Add a 'STAT' table to 'ttFont'. 'axes' is a list of dictionaries describing axes and their values. Example:: axes = [ dict( tag="wght", name="Weight", ordering=0, # optional values=[ dict(value=100, name='Thin'), dict(value=300, name='Light'), dict(value=400, name='Regular', flags=0x2), dict(value=900, name='Black'), ], ) ] Each axis dict must have 'tag' and 'name' items. 'tag' maps to the 'AxisTag' field. 'name' can be a name ID (int), a string, or a dictionary containing multilingual names (see the addMultilingualName() name table method), and will translate to the AxisNameID field. An axis dict may contain an 'ordering' item that maps to the AxisOrdering field. If omitted, the order of the axes list is used to calculate AxisOrdering fields. The axis dict may contain a 'values' item, which is a list of dictionaries describing AxisValue records belonging to this axis. Each value dict must have a 'name' item, which can be a name ID (int), a string, or a dictionary containing multilingual names, like the axis name. It translates to the ValueNameID field. Optionally the value dict can contain a 'flags' item. It maps to the AxisValue Flags field, and will be 0 when omitted. The format of the AxisValue is determined by the remaining contents of the value dictionary: If the value dict contains a 'value' item, an AxisValue record Format 1 is created. If in addition to the 'value' item it contains a 'linkedValue' item, an AxisValue record Format 3 is built. If the value dict contains a 'nominalValue' item, an AxisValue record Format 2 is built. Optionally it may contain 'rangeMinValue' and 'rangeMaxValue' items. These map to -Infinity and +Infinity respectively if omitted. You cannot specify Format 4 AxisValue tables this way, as they are not tied to a single axis, and specify a name for a location that is defined by multiple axes values. Instead, you need to supply the 'locations' argument. The optional 'locations' argument specifies AxisValue Format 4 tables. It should be a list of dicts, where each dict has a 'name' item, which works just like the value dicts above, an optional 'flags' item (defaulting to 0x0), and a 'location' dict. A location dict key is an axis tag, and the associated value is the location on the specified axis. They map to the AxisIndex and Value fields of the AxisValueRecord. Example:: locations = [ dict(name='Regular ABCD', location=dict(wght=300, ABCD=100)), dict(name='Bold ABCD XYZ', location=dict(wght=600, ABCD=200)), ] The optional 'elidedFallbackName' argument can be a name ID (int), a string, a dictionary containing multilingual names, or a list of STATNameStatements. It translates to the ElidedFallbackNameID field. The 'ttFont' argument must be a TTFont instance that already has a 'name' table. 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