CoreGraphics Namespace

The CoreGraphics namespace provides access to a C-based low-level 2D graphics API.

Classes

CGBitmapContext	CGContext backed by an in-memory bitmap.
CGColor	Color structure.
CGColorConversionInfo
CGColorConversionOptions
CGColorConverter	Opaque type that Core Graphics uses to convert colors between color spaces.
CGColorSpace	Colorspace, determines how Quartz interprets color information.
CGColorSpaceNames	Provides string constants whose values are known color spaces.
CGContext	Graphics context and primitives to draw in them.
CGContextPDF	PDF Rendering CGContext class. Use this class to create a CGContext that will output the results to a PDF file.
CGDataConsumer	Data sink for CGContextPDF or CGImageDestination to store data on.
CGDataProvider	A class that wraps a data source and exposes it to the CGImage class.
CGFont	Font support.
CGFunction	A callback function to be used with various N:CoreGraphics functions.
CGGradient	Gradient definitions.
CGImage	Represents bitmap images and bitmap masks.
CGImageProperties	Properties of bitmap images.
CGImagePropertiesExif	Standard Exif metadata of an image.
CGImagePropertiesGps	Location properties associated with an image.
CGImagePropertiesIptc	Properties with IPTC metadata in an image.
CGImagePropertiesJfif	Properties associated with JFIF bitmap images.
CGImagePropertiesPng	Properties associated with PNG bitmap images.
CGImagePropertiesTiff	Properties associated with TIFF images.
CGLayer	A hardware accelerated context.
CGPath	A drawing path is made up of lines, arcs, beziers that can be used to paint.
CGPattern	A pattern to draw in a CGContext.
CGPDFArray	Represents a PDF array
CGPDFContentStream	Class that gets PDF resources as an object or stream.
CGPDFDictionary	Represents a PDF Dictionary.
CGPDFDocument	PDF Document.
CGPDFInfo	Auxiliary parameters for constructing a CGContextPDF.
CGPDFObject	Class that represents various objects in a PDF document.
CGPDFOperatorTable	Class for storing callbacks for processing PDF documents.
CGPDFOutlineOptions
CGPDFPage	A PDF Page in a PDF Document.
CGPDFPageInfo	Specifies various boxes for the BeginPage(CGPDFPageInfo) method.
CGPDFScanner	Class that enables app developers to parse values from a PDF stream.
CGPDFStream	A PDF Stream.
CGShading	A type that represents a Quartz shading.
RectangleFExtensions	Extensions to the RectangleF class that are useful when using CoreGraphics.

Structs

CGAffineTransform	2D Affine transformation used to convert between coordinate spaces.
CGColorConverterTriple	Contains the rendering intent, color space, and transform for a color conversion.
CGPathElement	An individual element on a CGPath.
CGPoint	Structure defining a 2D point.
CGRect	Structure defining a rectangle in terms of location and size.
CGSize	Structure containing height and width values.
CGVector	A mathematical vector, with value equality implemented.
GColorConversionInfoTriple

Enums

CGBitmapFlags	Bitmap encoding.
CGBlendMode	Blending mode used during composition.
CGColorConversionInfoTransformType
CGColorConverterTransformType	Enumerates the relationships between color space transform starting and end points.
CGColorRenderingIntent	Determines how Quartz maps colors from the source color space to the gamut of the destination.
CGColorSpaceModel	Color space model.
CGGradientDrawingOptions	Drawing location for gradients.
CGImageAlphaInfo	Specifies the bitmap layout information.
CGImageByteOrderInfo
CGImageColorModel	An enumeration of valid color models.
CGImagePixelFormatInfo
CGInterpolationQuality	Quality of interpolation for drawing images.
CGLineCap	Style for line caps.
CGLineJoin	Join type for drawing operations.
CGPathDrawingMode	Drawing mode.
CGPathElementType	The type of an element in a CGPath.
CGPatternTiling	Pattern styling style.
CGPDFAccessPermissions
CGPDFBox	Type of box in a PDF document.
CGPDFDataFormat	Enumerates values that indicate the data format of a PDF.
CGPDFObjectType	Enumerates the various types of values that are found in a PDF document.
CGRectEdge	Coordinates used to establish the edge in RectangleFExtensions.Divide.
CGTextDrawingMode	Text drawing mode used by Quartz.
CGTextEncoding	Text encoding, this enumeration is deprecated, use CoreText APIs instead.
MatrixOrder

Delegates

CGFunction.CGFunctionEvaluate	A delegate used to specify the callback function of a CGFunction.
CGPath.ApplierFunction	A function that can make changes to a CGPathElement.
CGPattern.DrawPattern	Callback signature used to draw patterns on the screen.
CGPDFArray.ApplyCallback
CGPDFDictionary.ApplyCallback

Remarks

This namespace contains a binding to the two-dimensional, bitmap and vector graphic APIs. To learn more about the capabilities of MonoTouch.CoreGraphics you can read Apple's Quartz 2D Programming Guide.

Many graphics use-cases can be addressed using higher-level APIs such as those provided in N:UIKit, GLKit, and SpriteKit. However, some Core Graphics classes such as CGLayer, CGContext, and CGImage are not uncommonly seen in general UI tasks. In such situations, the Core Graphics class will often have more flexibility in terms of lower-level manipulation but requires more attention from the developer in terms of resource and state management.