gvar
: Glyph Variations Table¶
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fontTools.ttLib.tables._g_v_a_r.
compileGlyph_
(variations, pointCount, axisTags, sharedCoordIndices)[source]¶
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class
fontTools.ttLib.tables._g_v_a_r.
table__g_v_a_r
(tag=None)[source]¶ -
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static
compileOffsets_
(offsets)[source]¶ Packs a list of offsets into a ‘gvar’ offset table.
Returns a pair (bytestring, tableFormat). Bytestring is the packed offset table. Format indicates whether the table uses short (tableFormat=0) or long (tableFormat=1) integers. The returned tableFormat should get packed into the flags field of the ‘gvar’ header.
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dependencies
= ['fvar', 'glyf']¶
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merge
(m, tables)¶
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prune_pre_subset
(font, options)¶
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subset_glyphs
(s)¶
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static
TupleVariation¶
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class
fontTools.ttLib.tables.TupleVariation.
TupleVariation
(axes, coordinates)[source]¶ -
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static
compileDeltaValues_
(deltas, bytearr=None)[source]¶ [value1, value2, value3, …] –> bytearray
Emits a sequence of runs. Each run starts with a byte-sized header whose 6 least significant bits (header & 0x3F) indicate how many values are encoded in this run. The stored length is the actual length minus one; run lengths are thus in the range [1..64]. If the header byte has its most significant bit (0x80) set, all values in this run are zero, and no data follows. Otherwise, the header byte is followed by ((header & 0x3F) + 1) signed values. If (header & 0x40) is clear, the delta values are stored as signed bytes; if (header & 0x40) is set, the delta values are signed 16-bit integers.
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static
decompileDeltas_
(numDeltas, data, offset)[source]¶ (numDeltas, data, offset) –> ([delta, delta, …], newOffset)
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static
decompilePoints_
(numPoints, data, offset, tableTag)[source]¶ (numPoints, data, offset, tableTag) –> ([point1, point2, …], newOffset)
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getCoordWidth
()[source]¶ Return 2 if coordinates are (x, y) as in gvar, 1 if single values as in cvar, or 0 if empty.
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static
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fontTools.ttLib.tables.TupleVariation.
compileTupleVariationStore
(variations, pointCount, axisTags, sharedTupleIndices, useSharedPoints=True)[source]¶
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fontTools.ttLib.tables.TupleVariation.
decompileTupleVariationStore
(tableTag, axisTags, tupleVariationCount, pointCount, sharedTuples, data, pos, dataPos)[source]¶
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fontTools.ttLib.tables.TupleVariation.
decompileTupleVariation_
(pointCount, sharedTuples, sharedPoints, tableTag, axisTags, data, tupleData)[source]¶
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fontTools.ttLib.tables.TupleVariation.
inferRegion_
(peak)[source]¶ Infer start and end for a (non-intermediate) region
This helper function computes the applicability region for variation tuples whose INTERMEDIATE_REGION flag is not set in the TupleVariationHeader structure. Variation tuples apply only to certain regions of the variation space; outside that region, the tuple has no effect. To make the binary encoding more compact, TupleVariationHeaders can omit the intermediateStartTuple and intermediateEndTuple fields.