CGColorConversionInfo

An object that describes how to convert between color spaces for use by other system services.

Overview

A CGColorConversionInfoRef object specifies a conversion between two or more color spaces, including information about the intent of the conversion. You use color conversion objects to specify the work to be done by an MPSImageConversion filter, which can then perform GPU-accelerated image conversion.

Topics

Creating a Color Conversion

CGColorConversionInfoCreate

Creates a conversion between two specified color spaces.

CGColorConversionInfoCreateFromList

Creates a conversion between an arbitrary number of specified color spaces.

CGColorConversionInfoTransformType

Constants describing how a color conversion uses color spaces.

Color Conversion Options

Use these keys in the options dictionary when calling CGColorConversionInfoCreateFromList.

kCGColorConversionBlackPointCompensation

An option for whether to apply black point compensation when converting between color profiles.

Working with Core Foundation Types

CGColorConversionInfoGetTypeID

Returns the Core Foundation type identifier for a color conversion info data type.

Data Types

CGColorConversionInfoRef

An object that describes how to convert between color spaces for use by other system services.

See Also

Opaque Types

CGBitmapContext

A type of CGContextRef that you can use for drawing bits to memory.

CGColor

A set of components that define a color, with a color space specifying how to interpret them.

CGColorSpace

A profile that specifies how to interpret a color value for display.

CGContext

A Quartz 2D drawing destination.

CGDataConsumer

An abstraction for data-writing tasks that eliminates the need to manage a raw memory buffer.

CGDataProvider

An abstraction for data-reading tasks that eliminates the need to manage a raw memory buffer.

CGFont

A set of character glyphs and layout information for drawing text.

CGFunction

A general facility for defining and using callback functions.

CGGLContext

Deprecated. A type of CGContextRef for drawing OpenGL content.

CGGradient

A definition for a smooth transition between colors for drawing radial and axial gradient fills.

CGImage

A bitmap image or image mask.

CGLayer

An offscreen context for reusing content drawn with Core Graphics.

CGPath

Immutable and mutable types for graphics paths: mathematical descriptions of shapes or lines to be drawn in a graphics context.

CGPattern

A 2D pattern to be used for drawing graphics paths.

CGPDFArray

An array structure within a PDF document.

CGPDFContentStream

A representation of one or more content data streams in a PDF page.

CGPDFContext

A type of CGContextRef for drawing PDF content.

CGPDFDictionary

A dictionary structure within a PDF document.

CGPDFDocument

A document that contains PDF (Portable Document Format) drawing information.

CGPDFObject

An object representing content within a PDF document.

CGPDFOperatorTable

A set of callback functions for operators used when scanning content in a PDF document.

CGPDFPage

A page in a PDF document.

CGPDFScanner

A parser object for handling content and operators in a PDF content stream.

CGPDFStream

A stream or sequence of data bytes in a PDF document.

CGPDFString

A text string in a PDF document.

CGPSConverter

An object that converts PostScript data to PDF data.

CGShading

A definition for a smooth transition between colors, controlled by a custom function you provide, for drawing radial and axial gradient fills.