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75 lines
3.1 KiB
75 lines
3.1 KiB
4 months ago
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#################################################
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otlLib: Routines for working with OpenType Layout
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#################################################
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The ``fontTools.otlLib`` library provides routines to help you create the
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subtables and other data structures you need when you are editing a font's
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``GSUB`` and ``GPOS`` tables: substitution and positioning rules, anchors,
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lookups, coverage tables and so on.
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------------------------------------------
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High-level OpenType Layout Lookup Builders
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------------------------------------------
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.. automodule:: fontTools.otlLib.builder
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:members: AlternateSubstBuilder, ChainContextPosBuilder, ChainContextSubstBuilder, LigatureSubstBuilder, MultipleSubstBuilder, CursivePosBuilder, MarkBasePosBuilder, MarkLigPosBuilder, MarkMarkPosBuilder, ReverseChainSingleSubstBuilder, SingleSubstBuilder, ClassPairPosSubtableBuilder, PairPosBuilder, SinglePosBuilder
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:member-order: bysource
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--------------------------------------
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Common OpenType Layout Data Structures
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--------------------------------------
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.. automodule:: fontTools.otlLib.builder
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:members: buildCoverage, buildLookup
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------------------------------------
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Low-level GSUB Table Lookup Builders
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------------------------------------
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These functions deal with the "simple" lookup types. See above for classes to
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help build more complex lookups (contextual and chaining lookups).
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.. automodule:: fontTools.otlLib.builder
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:members: buildSingleSubstSubtable, buildMultipleSubstSubtable, buildAlternateSubstSubtable, buildLigatureSubstSubtable
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--------------------------
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GPOS Shared Table Builders
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--------------------------
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The functions help build the `GPOS shared tables <https://docs.microsoft.com/en-us/typography/opentype/spec/gpos#shared-tables-value-record-anchor-table-and-mark-array-table>`_
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as defined in the OpenType spec: value records, anchors, mark arrays and
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mark record tables.
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.. automodule:: fontTools.otlLib.builder
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:members: buildValue, buildAnchor, buildMarkArray, buildDevice, buildBaseArray, buildComponentRecord, buildMarkArray, buildValue
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:member-order: bysource
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------------------------------------
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Low-level GPOS Table Lookup Builders
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------------------------------------
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These functions deal with the "simple" lookup types. See above for classes to
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help build more complex lookups (contextual and chaining lookups).
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.. automodule:: fontTools.otlLib.builder
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:members: buildCursivePosSubtable, buildLigatureArray, buildMarkBasePos, buildMarkBasePosSubtable, buildMarkLigPos, buildMarkLigPosSubtable, buildPairPosClassesSubtable, buildPairPosGlyphs, buildPairPosGlyphsSubtable, buildSinglePos, buildSinglePosSubtable
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:member-order: bysource
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----------------------------
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GDEF Table Subtable Builders
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----------------------------
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These functions build subtables for elements of the ``GDEF`` table.
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.. automodule:: fontTools.otlLib.builder
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:members: buildAttachList, buildLigCaretList, buildMarkGlyphSetsDef
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:member-order: bysource
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------------------
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STAT Table Builder
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------------------
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.. automodule:: fontTools.otlLib.builder
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:members: buildStatTable
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:member-order: bysource
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