class final Core · roukmoute/pdf 0.6.2
PDF\Specification\Dictionary\DeviceNMixingHintsDictionaryTable73\DotGainEntryTable 73, /DotGain; PDF type: dictionary; Optional.Inheritance and contracts
Parent : PDF\Specification\SchemaEntry
Definition in the specification
Table 73 · Entries in a DeviceN Mixing Hints Dictionary
ISO 32000-1:2008, §8.6.6.5 · PDF page 172 ↗
/DotGain dictionary
(Optional) A dictionary specifying the dot gain of inks that shall be used in blending calculations when used as an alternative to the tint transformation function. Dot gain (or loss) represents the amount by which a printer’s halftone dots change as the ink spreads and is absorbed by paper. For each entry, the key shall be a colorant name, and the value shall be a function that maps values in the range 0 to 1 to values in the range 0 to 1. The dictionary may list colorants unused by this specific DeviceN instance and need not list all colorants. An entry with a key of Default shall specify a function to be used by all colorants for which a dot gain function is not explicitly specified. Conforming readers may ignore values in this dictionary when other sources of dot gain information are available, such as ICC profiles associated with the process colour space or tint transformation functions associated with individual colorants.
Qualifier: Optional
Conditional descriptions remain traceable. A definition alone does not implement a codec, a signature or every format mechanism. Read the coverage.
Construction
__construct()
public function __construct(PDF\Syntax\Object\DictionaryType|PDF\Syntax\Object\IndirectReference $value)Inherited methods
3 methods from parents and contracts
definition()
public function definition(): PDF\Specification\EntryDefinitionkey()
public function key(): PDF\Syntax\Object\NameTypevalue()
public function value(): PDF\Syntax\FileStructure\BasicTypeProperties
| Declaration | Origin and documentation |
|---|---|
public readonly PDF\Syntax\Object\NameType $key | PDF\Syntax\Object\DictionaryObject\Entry |
public readonly PDF\Syntax\FileStructure\BasicType $value | PDF\Syntax\Object\DictionaryObject\Entry |
Constants
| Name | PHP value | Origin |
|---|---|---|
KEY | | PDF\Specification\Dictionary\DeviceNMixingHintsDictionaryTable73\DotGainEntry |
TABLE | | PDF\Specification\Dictionary\DeviceNMixingHintsDictionaryTable73\DotGainEntry |
VARIABLE | | PDF\Specification\SchemaEntry |