Documentation
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Overview ¶
Package cmap reads and writes "cmap" tables. https://docs.microsoft.com/en-us/typography/opentype/spec/cmap
Index ¶
Constants ¶
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Variables ¶
This section is empty.
Functions ¶
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Types ¶
type Format12 ¶ added in v0.3.4
Format12 represents a format 12 cmap subtable. https://docs.microsoft.com/en-us/typography/opentype/spec/cmap#format-12-segmented-coverage
The binary encoding is most efficient, if consecutive code points are mapped to consecutive glyph IDs.
type Format4 ¶
Format4 represents a format 4 cmap subtable. https://docs.microsoft.com/en-us/typography/opentype/spec/cmap#format-4-segment-mapping-to-delta-values
type Key ¶
type Key struct {
PlatformID uint16 // Platform ID.
EncodingID uint16 // Platform-specific encoding ID.
Language uint16
}
Key selects a subtable of a cmap table.
type Subtable ¶
type Subtable interface {
// Lookup returns the glyph index for the given rune.
// If the rune is not found, Lookup returns 0 (corresponding to the ".notdef" glyph).
Lookup(r rune) glyph.ID
// Encode returns the binary form of the subtable.
Encode(language uint16) []byte
// CodeRange returns the smallest and largest code point in the subtable.
CodeRange() (low, high rune)
}
Subtable represents a decoded cmap subtable.
type Table ¶
Table contains all subtables from a cmap table.
func Decode ¶
Decode returns all subtables of the given "cmap" table. The returned subtables are guaranteed to be at least 10 bytes long and to have a valid format value (0, 2, 4, 6, 8, 10, 12, 13 or 14) in the first two bytes.
Source Files