Function

CTRunGetAdvancesPtr

Returns a direct pointer for the glyph advance array stored in the run.

Declaration

const CGSize * CTRunGetAdvancesPtr(CTRunRef run);

Parameters

run

The run whose advances you wish to access.

Return Value

A valid pointer to an array of CGSize structures representing the glyph advance array or NULL.

Discussion

The advance array will have a length equal to the value returned by CTRunGetGlyphCount. The caller should be prepared for this function to return NULL even if there are glyphs in the stream. Should this function return NULL, the caller needs allocate its own buffer and call CTRunGetAdvances to fetch the advances. Note that advances alone are not sufficient for correctly positioning glyphs in a line, as a run may have a non-identity matrix or the initial glyph in a line may have a non-zero origin; callers should consider using positions instead.

See Also

Getting Glyph Run Data

CTRunGetGlyphCount

Gets the glyph count for the run.

CTRunGetAttributes

Returns the attribute dictionary that was used to create the glyph run.

CTRunGetStatus

Returns the run's status.

CTRunGetGlyphsPtr

Returns a direct pointer for the glyph array stored in the run.

CTRunGetGlyphs

Copies a range of glyphs into a user-provided buffer.

CTRunGetPositionsPtr

Returns a direct pointer for the glyph position array stored in the run.

CTRunGetPositions

Copies a range of glyph positions into a user-provided buffer.

CTRunGetAdvances

Copies a range of glyph advances into a user-provided buffer.

CTRunGetStringIndicesPtr

Returns a direct pointer for the string indices stored in the run.

CTRunGetStringIndices

Copies a range of string indices into a user-provided buffer.

CTRunGetStringRange

Gets the range of characters that originally spawned the glyphs in the run.