coregraphics

package
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 Go to latest Published: Jun 21, 2024 License: MIT Imports: 5 Imported by: 0

Documentation

Overview

Harness the power of Quartz technology to perform lightweight 2D rendering with high-fidelity output. Handle path-based drawing, antialiased rendering, gradients, images, color management, PDF documents, and more.

Apple Documentation

Index

Constants

This section is empty.

Variables

This section is empty.

Functions

This section is empty.

Types

type AffineTransform 

type AffineTransform struct {
	M11 float64
	M12 float64
	M21 float64
	M22 float64
	TX  float64
	TY  float64
}

An affine transformation matrix for use in drawing 2D graphics. Full Topic

type BitmapContextReleaseDataCallback 

type BitmapContextReleaseDataCallback = func(releaseInfo unsafe.Pointer, data unsafe.Pointer)

A callback function used to release data associate with the bitmap context. Full Topic

type BitmapInfo 

type BitmapInfo uint32

Component information for a bitmap image. Full Topic 

const (
	KBitmapAlphaInfoMask     BitmapInfo = 31
	KBitmapByteOrder16Big    BitmapInfo = 12288
	KBitmapByteOrder16Little BitmapInfo = 4096
	KBitmapByteOrder32Big    BitmapInfo = 16384
	KBitmapByteOrder32Little BitmapInfo = 8192
	KBitmapByteOrderDefault  BitmapInfo = 0
	KBitmapByteOrderMask     BitmapInfo = 28672
	KBitmapFloatComponents   BitmapInfo = 256
	KBitmapFloatInfoMask     BitmapInfo = 3840
)

type BlendMode 

type BlendMode int32

Compositing operations for images. Full Topic 

const (
	KBlendModeClear           BlendMode = 16
	KBlendModeColor           BlendMode = 14
	KBlendModeColorBurn       BlendMode = 7
	KBlendModeColorDodge      BlendMode = 6
	KBlendModeCopy            BlendMode = 17
	KBlendModeDarken          BlendMode = 4
	KBlendModeDestinationAtop BlendMode = 24
	KBlendModeDestinationIn   BlendMode = 22
	KBlendModeDestinationOut  BlendMode = 23
	KBlendModeDestinationOver BlendMode = 21
	KBlendModeDifference      BlendMode = 10
	KBlendModeExclusion       BlendMode = 11
	KBlendModeHardLight       BlendMode = 9
	KBlendModeHue             BlendMode = 12
	KBlendModeLighten         BlendMode = 5
	KBlendModeLuminosity      BlendMode = 15
	KBlendModeMultiply        BlendMode = 1
	KBlendModeNormal          BlendMode = 0
	KBlendModeOverlay         BlendMode = 3
	KBlendModePlusDarker      BlendMode = 26
	KBlendModePlusLighter     BlendMode = 27
	KBlendModeSaturation      BlendMode = 13
	KBlendModeScreen          BlendMode = 2
	KBlendModeSoftLight       BlendMode = 8
	KBlendModeSourceAtop      BlendMode = 20
	KBlendModeSourceIn        BlendMode = 18
	KBlendModeSourceOut       BlendMode = 19
	KBlendModeXOR             BlendMode = 25
)

type ButtonCount 

type ButtonCount uint32

Represents the number of buttons being set in a synthetic mouse event. Full Topic

type CaptureOptions 

type CaptureOptions uint32

Configuration parameters that are used when capturing displays. Full Topic 

const (
	KCaptureNoFill    CaptureOptions = 1
	KCaptureNoOptions CaptureOptions = 0
)

type CharCode 

type CharCode uint16

Represents a character generated by pressing one or more keys on a keyboard. Full Topic

type ColorConversionInfoRef 

type ColorConversionInfoRef uintptr

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

type ColorConversionInfoTransformType 

type ColorConversionInfoTransformType uint32

Constants describing how a color conversion uses color spaces. Full Topic 

const (
	KColorConversionTransformApplySpace ColorConversionInfoTransformType = 2
	KColorConversionTransformFromSpace  ColorConversionInfoTransformType = 0
	KColorConversionTransformToSpace    ColorConversionInfoTransformType = 1
)

type ColorDataFormat 

type ColorDataFormat struct {
	Version            uint32
	Colorspace_info    uintptr
	Bitmap_info        uint32
	Bits_per_component uint64
	Bytes_per_row      uint64
	Intent             uint32
	Decode             *float64
}
[Full Topic]

type ColorRef 

type ColorRef uintptr

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

type ColorRenderingIntent 

type ColorRenderingIntent int32

Handling options for colors that are not located within the destination color space of a graphics context. Full Topic 

const (
	KRenderingIntentAbsoluteColorimetric ColorRenderingIntent = 1
	KRenderingIntentDefault              ColorRenderingIntent = 0
	KRenderingIntentPerceptual           ColorRenderingIntent = 3
	KRenderingIntentRelativeColorimetric ColorRenderingIntent = 2
	KRenderingIntentSaturation           ColorRenderingIntent = 4
)

type ColorSpaceModel 

type ColorSpaceModel int32

Models for color spaces. Full Topic 

const (
	KColorSpaceModelCMYK       ColorSpaceModel = 2
	KColorSpaceModelDeviceN    ColorSpaceModel = 4
	KColorSpaceModelIndexed    ColorSpaceModel = 5
	KColorSpaceModelLab        ColorSpaceModel = 3
	KColorSpaceModelMonochrome ColorSpaceModel = 0
	KColorSpaceModelPattern    ColorSpaceModel = 6
	KColorSpaceModelRGB        ColorSpaceModel = 1
	KColorSpaceModelUnknown    ColorSpaceModel = -1
	KColorSpaceModelXYZ        ColorSpaceModel = 7
)

type ColorSpaceRef 

type ColorSpaceRef uintptr

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

type ConfigureOption 

type ConfigureOption uint32

The scope of the changes in a display configuration transaction. Full Topic 

const (
	KConfigureForAppOnly  ConfigureOption = 0
	KConfigureForSession  ConfigureOption = 1
	KConfigurePermanently ConfigureOption = 2
)

type ContextRef 

type ContextRef uintptr

A Quartz 2D drawing environment. Full Topic

type DataConsumerCallbacks 

type DataConsumerCallbacks struct {
	PutBytes        uintptr
	ReleaseConsumer uintptr
}

A structure that contains pointers to callback functions that manage the copying of data for a data consumer. Full Topic

type DataConsumerPutBytesCallback 

type DataConsumerPutBytesCallback = func(info unsafe.Pointer, buffer unsafe.Pointer, count uint) uint

Copies data from a Core Graphics-supplied buffer into a data consumer. Full Topic

type DataConsumerRef 

type DataConsumerRef uintptr

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

type DataConsumerReleaseInfoCallback 

type DataConsumerReleaseInfoCallback = func(info unsafe.Pointer)

Releases any private data or resources associated with the data consumer. Full Topic

type DataProviderDirectCallbacks 

type DataProviderDirectCallbacks struct {
	Version            uint32
	GetBytePointer     uintptr
	ReleaseBytePointer uintptr
	GetBytesAtPosition uintptr
	ReleaseInfo        uintptr
}

Defines pointers to client-defined callback functions that manage the sending of data for a direct-access data provider. Full Topic

type DataProviderGetBytePointerCallback 

type DataProviderGetBytePointerCallback = func(info unsafe.Pointer) unsafe.Pointer

A callback function that returns a generic pointer to the provider data. Full Topic

type DataProviderGetBytesCallback 

type DataProviderGetBytesCallback = func(info unsafe.Pointer, buffer unsafe.Pointer, count uint) uint

A callback function that copies from a provider data stream into a Core Graphics buffer. Full Topic

type DataProviderRef 

type DataProviderRef uintptr

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

type DataProviderReleaseBytePointerCallback 

type DataProviderReleaseBytePointerCallback = func(info unsafe.Pointer, pointer unsafe.Pointer)

A callback function that releases the pointer Core Graphics obtained by calling CGDataProviderGetBytePointerCallback. Full Topic

type DataProviderReleaseDataCallback 

type DataProviderReleaseDataCallback = func(info unsafe.Pointer, data unsafe.Pointer, size uint)

A callback function that releases data you supply to the function coregraphics/cgdataprovidercreatewithdata. Full Topic

type DataProviderReleaseInfoCallback 

type DataProviderReleaseInfoCallback = func(info unsafe.Pointer)

A callback function that releases any private data or resources associated with the data provider. Full Topic

type DataProviderRewindCallback 

type DataProviderRewindCallback = func(info unsafe.Pointer)

A callback function that moves the current position in the data stream back to the beginning. Full Topic

type DataProviderSequentialCallbacks 

type DataProviderSequentialCallbacks struct {
	Version     uint32
	GetBytes    uintptr
	SkipForward uintptr
	Rewind      uintptr
	ReleaseInfo uintptr
}

Defines a structure containing pointers to client-defined callback functions that manage the sending of data for a sequential-access data provider. Full Topic

type DataProviderSkipForwardCallback 

type DataProviderSkipForwardCallback = func(info unsafe.Pointer, count objc.Object) objc.Object

A callback function that advances the current position in the data stream supplied by the provider. Full Topic

type DeviceColor 

type DeviceColor struct {
	Red   float32
	Green float32
	Blue  float32
}
[Full Topic]

type DirectDisplayID 

type DirectDisplayID uint32

A unique identifier for an attached display. Full Topic

type DisplayBlendFraction 

type DisplayBlendFraction float32

The percentage of blend color used in a fade operation. Full Topic

type DisplayChangeSummaryFlags 

type DisplayChangeSummaryFlags uint32

The configuration parameters that are passed to a display reconfiguration callback function. Full Topic 

const (
	KDisplayAddFlag                 DisplayChangeSummaryFlags = 16
	KDisplayBeginConfigurationFlag  DisplayChangeSummaryFlags = 1
	KDisplayDesktopShapeChangedFlag DisplayChangeSummaryFlags = 4096
	KDisplayDisabledFlag            DisplayChangeSummaryFlags = 512
	KDisplayEnabledFlag             DisplayChangeSummaryFlags = 256
	KDisplayMirrorFlag              DisplayChangeSummaryFlags = 1024
	KDisplayMovedFlag               DisplayChangeSummaryFlags = 2
	KDisplayRemoveFlag              DisplayChangeSummaryFlags = 32
	KDisplaySetMainFlag             DisplayChangeSummaryFlags = 4
	KDisplaySetModeFlag             DisplayChangeSummaryFlags = 8
	KDisplayUnMirrorFlag            DisplayChangeSummaryFlags = 2048
)

type DisplayCount 

type DisplayCount uint32

The number of displays in various lists. Full Topic

type DisplayFadeInterval 

type DisplayFadeInterval float32

The duration in seconds of a fade operation or a fade hardware reservation. Full Topic

type DisplayFadeReservationToken 

type DisplayFadeReservationToken uint32

A token issued by Quartz when reserving one or more displays for a fade operation during a specified interval. Full Topic

type DisplayModeRef 

type DisplayModeRef uintptr

A reference to a display mode object. Full Topic

type DisplayReconfigurationCallBack 

type DisplayReconfigurationCallBack = func(display DirectDisplayID, flags DisplayChangeSummaryFlags, userInfo unsafe.Pointer)

A client-supplied callback function that’s invoked whenever the configuration of a local display is changed. Full Topic

type DisplayReservationInterval 

type DisplayReservationInterval float32

The time interval for a fade reservation. Full Topic

type DisplayStreamFrameAvailableHandler 

type DisplayStreamFrameAvailableHandler = func(status DisplayStreamFrameStatus, displayTime uint64, frameSurface iosurface.Ref, updateRef DisplayStreamUpdateRef)

A block called when a data stream has a new frame event to process. Full Topic

type DisplayStreamFrameStatus 

type DisplayStreamFrameStatus int32

Describes a frame update event. Full Topic 

const (
	KDisplayStreamFrameStatusFrameBlank    DisplayStreamFrameStatus = 2
	KDisplayStreamFrameStatusFrameComplete DisplayStreamFrameStatus = 0
	KDisplayStreamFrameStatusFrameIdle     DisplayStreamFrameStatus = 1
	KDisplayStreamFrameStatusStopped       DisplayStreamFrameStatus = 3
)

type DisplayStreamRef 

type DisplayStreamRef uintptr

A reference to a display stream object. Full Topic

type DisplayStreamUpdateRectType 

type DisplayStreamUpdateRectType int32

Use these constants to determine which rectangles your app is interested in. Full Topic 

const (
	KDisplayStreamUpdateDirtyRects        DisplayStreamUpdateRectType = 2
	KDisplayStreamUpdateMovedRects        DisplayStreamUpdateRectType = 1
	KDisplayStreamUpdateReducedDirtyRects DisplayStreamUpdateRectType = 3
	KDisplayStreamUpdateRefreshedRects    DisplayStreamUpdateRectType = 0
)

type DisplayStreamUpdateRef 

type DisplayStreamUpdateRef uintptr

A reference to frame update’s metadata. Full Topic

type Error 

type Error int32

A uniform type for result codes returned by functions in Core Graphics. Full Topic 

const (
	KErrorCannotComplete    Error = 1004
	KErrorFailure           Error = 1000
	KErrorIllegalArgument   Error = 1001
	KErrorInvalidConnection Error = 1002
	KErrorInvalidContext    Error = 1003
	KErrorInvalidOperation  Error = 1010
	KErrorNoneAvailable     Error = 1011
	KErrorNotImplemented    Error = 1006
	KErrorRangeCheck        Error = 1007
	KErrorSuccess           Error = 0
	KErrorTypeCheck         Error = 1008
)

type ErrorCallback 

type ErrorCallback = func()
[Full Topic]

type EventField 

type EventField uint32

Constants used as keys to access specialized fields in low-level events. Full Topic 

const (
	KEventSourceGroupID                                      EventField = 44
	KEventSourceStateID                                      EventField = 45
	KEventSourceUnixProcessID                                EventField = 41
	KEventSourceUserData                                     EventField = 42
	KEventSourceUserID                                       EventField = 43
	KEventTargetProcessSerialNumber                          EventField = 39
	KEventTargetUnixProcessID                                EventField = 40
	KEventUnacceleratedPointerMovementX                      EventField = 170
	KEventUnacceleratedPointerMovementY                      EventField = 171
	KKeyboardEventAutorepeat                                 EventField = 8
	KKeyboardEventKeyboardType                               EventField = 10
	KKeyboardEventKeycode                                    EventField = 9
	KMouseEventButtonNumber                                  EventField = 3
	KMouseEventClickState                                    EventField = 1
	KMouseEventDeltaX                                        EventField = 4
	KMouseEventDeltaY                                        EventField = 5
	KMouseEventInstantMouser                                 EventField = 6
	KMouseEventNumber                                        EventField = 0
	KMouseEventPressure                                      EventField = 2
	KMouseEventSubtype                                       EventField = 7
	KMouseEventWindowUnderMousePointer                       EventField = 91
	KMouseEventWindowUnderMousePointerThatCanHandleThisEvent EventField = 92
	KScrollWheelEventDeltaAxis1                              EventField = 11
	KScrollWheelEventDeltaAxis2                              EventField = 12
	KScrollWheelEventDeltaAxis3                              EventField = 13
	KScrollWheelEventFixedPtDeltaAxis1                       EventField = 93
	KScrollWheelEventFixedPtDeltaAxis2                       EventField = 94
	KScrollWheelEventFixedPtDeltaAxis3                       EventField = 95
	KScrollWheelEventInstantMouser                           EventField = 14
	KScrollWheelEventIsContinuous                            EventField = 88
	KScrollWheelEventMomentumPhase                           EventField = 123
	KScrollWheelEventPointDeltaAxis1                         EventField = 96
	KScrollWheelEventPointDeltaAxis2                         EventField = 97
	KScrollWheelEventPointDeltaAxis3                         EventField = 98
	KScrollWheelEventScrollCount                             EventField = 100
	KScrollWheelEventScrollPhase                             EventField = 99
	KTabletEventDeviceID                                     EventField = 24
	KTabletEventPointButtons                                 EventField = 18
	KTabletEventPointPressure                                EventField = 19
	KTabletEventPointX                                       EventField = 15
	KTabletEventPointY                                       EventField = 16
	KTabletEventPointZ                                       EventField = 17
	KTabletEventRotation                                     EventField = 22
	KTabletEventTangentialPressure                           EventField = 23
	KTabletEventTiltX                                        EventField = 20
	KTabletEventTiltY                                        EventField = 21
	KTabletEventVendor1                                      EventField = 25
	KTabletEventVendor2                                      EventField = 26
	KTabletEventVendor3                                      EventField = 27
	KTabletProximityEventCapabilityMask                      EventField = 36
	KTabletProximityEventDeviceID                            EventField = 31
	KTabletProximityEventEnterProximity                      EventField = 38
	KTabletProximityEventPointerID                           EventField = 30
	KTabletProximityEventPointerType                         EventField = 37
	KTabletProximityEventSystemTabletID                      EventField = 32
	KTabletProximityEventTabletID                            EventField = 29
	KTabletProximityEventVendorID                            EventField = 28
	KTabletProximityEventVendorPointerSerialNumber           EventField = 34
	KTabletProximityEventVendorPointerType                   EventField = 33
	KTabletProximityEventVendorUniqueID                      EventField = 35
)

type EventFilterMask 

type EventFilterMask uint32

Specify masks for classes of low-level events that can be filtered during event suppression states. Full Topic 

const (
	KEventFilterMaskPermitLocalKeyboardEvents EventFilterMask = 2
	KEventFilterMaskPermitLocalMouseEvents    EventFilterMask = 1
	KEventFilterMaskPermitSystemDefinedEvents EventFilterMask = 4
)

type EventFlags 

type EventFlags uint64

Constants that indicate the modifier key state at the time an event is created, as well as other event-related states. Full Topic 

const (
	KEventFlagMaskAlphaShift   EventFlags = 65536
	KEventFlagMaskAlternate    EventFlags = 524288
	KEventFlagMaskCommand      EventFlags = 1048576
	KEventFlagMaskControl      EventFlags = 262144
	KEventFlagMaskHelp         EventFlags = 4194304
	KEventFlagMaskNonCoalesced EventFlags = 256
	KEventFlagMaskNumericPad   EventFlags = 2097152
	KEventFlagMaskSecondaryFn  EventFlags = 8388608
	KEventFlagMaskShift        EventFlags = 131072
)

type EventMask 

type EventMask uint64

Defines a mask that identifies the set of Quartz events to be observed in an event tap. Full Topic

type EventMouseSubtype 

type EventMouseSubtype uint32

Constants used with the kCGMouseEventSubtype event field. Full Topic 

const (
	KEventMouseSubtypeDefault         EventMouseSubtype = 0
	KEventMouseSubtypeTabletPoint     EventMouseSubtype = 1
	KEventMouseSubtypeTabletProximity EventMouseSubtype = 2
)

type EventRef 

type EventRef uintptr

Defines an opaque type that represents a low-level hardware event. Full Topic

type EventSourceKeyboardType 

type EventSourceKeyboardType uint32

Defines a code that represents the type of keyboard used with a specified event source. Full Topic

type EventSourceRef 

type EventSourceRef uintptr

Defines an opaque type that represents the source of a Quartz event. Full Topic

type EventSourceStateID 

type EventSourceStateID int32

Constants that specify the possible source states of an event source. Full Topic 

const (
	KEventSourceStateCombinedSessionState EventSourceStateID = 0
	KEventSourceStateHIDSystemState       EventSourceStateID = 1
	KEventSourceStatePrivate              EventSourceStateID = -1
)

type EventSuppressionState 

type EventSuppressionState uint32

Specify the event suppression states that can occur after posting an event. Full Topic 

const (
	KEventSuppressionStateRemoteMouseDrag     EventSuppressionState = 1
	KEventSuppressionStateSuppressionInterval EventSuppressionState = 0
	KNumberOfEventSuppressionStates           EventSuppressionState = 2
)

type EventTapCallBack 

type EventTapCallBack = func(proxy unsafe.Pointer, type_ EventType, event EventRef, userInfo unsafe.Pointer) EventRef

A client-supplied callback function that’s invoked whenever an associated event tap receives a Quartz event. Full Topic

type EventTapInformation 

type EventTapInformation struct {
	EventTapID         uint32
	TapPoint           uint32
	Options            uint32
	EventsOfInterest   uint64
	TappingProcess     int32
	ProcessBeingTapped int32
	Enabled            bool
	MinUsecLatency     float32
	AvgUsecLatency     float32
	MaxUsecLatency     float32
}

Defines the structure used to report information about event taps. Full Topic

type EventTapLocation 

type EventTapLocation uint32

Constants that specify possible tapping points for events. Full Topic 

const (
	KAnnotatedSessionEventTap EventTapLocation = 2
	KHIDEventTap              EventTapLocation = 0
	KSessionEventTap          EventTapLocation = 1
)

type EventTapOptions 

type EventTapOptions uint32

Constants that specify whether a new event tap is an active filter or a passive listener. Full Topic 

const (
	KEventTapOptionDefault    EventTapOptions = 0
	KEventTapOptionListenOnly EventTapOptions = 1
)

type EventTapPlacement 

type EventTapPlacement uint32

Constants that specify where a new event tap is inserted into the list of active event taps. Full Topic 

const (
	KHeadInsertEventTap EventTapPlacement = 0
	KTailAppendEventTap EventTapPlacement = 1
)

type EventTimestamp 

type EventTimestamp uint64

Defines the elapsed time in nanoseconds since startup that a Quartz event occurred. Full Topic

type EventType 

type EventType uint32

Constants that specify the different types of input events. Full Topic 

const (
	KEventFlagsChanged           EventType = 12
	KEventKeyDown                EventType = 10
	KEventKeyUp                  EventType = 11
	KEventLeftMouseDown          EventType = 1
	KEventLeftMouseDragged       EventType = 6
	KEventLeftMouseUp            EventType = 2
	KEventMouseMoved             EventType = 5
	KEventNull                   EventType = 0
	KEventOtherMouseDown         EventType = 25
	KEventOtherMouseDragged      EventType = 27
	KEventOtherMouseUp           EventType = 26
	KEventRightMouseDown         EventType = 3
	KEventRightMouseDragged      EventType = 7
	KEventRightMouseUp           EventType = 4
	KEventScrollWheel            EventType = 22
	KEventTabletPointer          EventType = 23
	KEventTabletProximity        EventType = 24
	KEventTapDisabledByTimeout   EventType = 4294967294
	KEventTapDisabledByUserInput EventType = 4294967295
)

type Float 

type Float = float64

The basic type for all floating-point values. Full Topic

type FontIndex 

type FontIndex int

An index into a font table. Full Topic 

const (
	KFontIndexInvalid FontIndex = 65535
	KFontIndexMax     FontIndex = 65534
	KGlyphMax         FontIndex = 65534
)

type FontPostScriptFormat 

type FontPostScriptFormat int32

Possible formats for a PostScript font subset. Full Topic 

const (
	KFontPostScriptFormatType1  FontPostScriptFormat = 1
	KFontPostScriptFormatType3  FontPostScriptFormat = 3
	KFontPostScriptFormatType42 FontPostScriptFormat = 42
)

type FontRef 

type FontRef uintptr

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

type FunctionCallbacks 

type FunctionCallbacks struct {
	Version     uint32
	Evaluate    uintptr
	ReleaseInfo uintptr
}

A structure that contains callbacks needed by a CGFunctionRef object. Full Topic

type FunctionEvaluateCallback 

type FunctionEvaluateCallback = func(info unsafe.Pointer, arg1 *float64, arg2 *float64)

Performs custom operations on the supplied input data to produce output data. Full Topic

type FunctionRef 

type FunctionRef uintptr

A general facility for defining and using callback functions. Full Topic

type FunctionReleaseInfoCallback 

type FunctionReleaseInfoCallback = func(info unsafe.Pointer)

Performs custom clean-up tasks when Core Graphics deallocates a CGFunctionRef object. Full Topic

type GammaValue 

type GammaValue float32

A value used to map a color generated in software to a color supported by the display hardware. Full Topic

type GesturePhase 

type GesturePhase uint32
[Full Topic]

const (
	KGesturePhaseBegan     GesturePhase = 1
	KGesturePhaseCancelled GesturePhase = 8
	KGesturePhaseChanged   GesturePhase = 2
	KGesturePhaseEnded     GesturePhase = 4
	KGesturePhaseMayBegin  GesturePhase = 128
	KGesturePhaseNone      GesturePhase = 0
)

type Glyph 

type Glyph FontIndex

An index into the internal glyph table of a font. Full Topic

type GlyphDeprecatedEnum 

type GlyphDeprecatedEnum int32
[Full Topic]

type GradientDrawingOptions 

type GradientDrawingOptions uint32

Drawing locations for gradients. Full Topic 

const (
	KGradientDrawsAfterEndLocation    GradientDrawingOptions = 2
	KGradientDrawsBeforeStartLocation GradientDrawingOptions = 1
)

type GradientRef 

type GradientRef uintptr

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

type ImageAlphaInfo 

type ImageAlphaInfo uint32

Storage options for alpha component data. Full Topic 

const (
	KImageAlphaFirst              ImageAlphaInfo = 4
	KImageAlphaLast               ImageAlphaInfo = 3
	KImageAlphaNone               ImageAlphaInfo = 0
	KImageAlphaNoneSkipFirst      ImageAlphaInfo = 6
	KImageAlphaNoneSkipLast       ImageAlphaInfo = 5
	KImageAlphaOnly               ImageAlphaInfo = 7
	KImageAlphaPremultipliedFirst ImageAlphaInfo = 2
	KImageAlphaPremultipliedLast  ImageAlphaInfo = 1
)

type ImageByteOrderInfo 

type ImageByteOrderInfo uint32
[Full Topic]

const (
	KImageByteOrder16Big    ImageByteOrderInfo = 12288
	KImageByteOrder16Little ImageByteOrderInfo = 4096
	KImageByteOrder32Big    ImageByteOrderInfo = 16384
	KImageByteOrder32Little ImageByteOrderInfo = 8192
	KImageByteOrderDefault  ImageByteOrderInfo = 0
	KImageByteOrderMask     ImageByteOrderInfo = 28672
)

type ImagePixelFormatInfo 

type ImagePixelFormatInfo uint32
[Full Topic]

const (
	KImagePixelFormatMask      ImagePixelFormatInfo = 983040
	KImagePixelFormatPacked    ImagePixelFormatInfo = 0
	KImagePixelFormatRGB101010 ImagePixelFormatInfo = 196608
	KImagePixelFormatRGB555    ImagePixelFormatInfo = 65536
	KImagePixelFormatRGB565    ImagePixelFormatInfo = 131072
	KImagePixelFormatRGBCIF10  ImagePixelFormatInfo = 262144
)

type ImageRef 

type ImageRef uintptr

A bitmap image or image mask. Full Topic

type InterpolationQuality 

type InterpolationQuality int32

Levels of interpolation quality for rendering an image. Full Topic 

const (
	KInterpolationDefault InterpolationQuality = 0
	KInterpolationHigh    InterpolationQuality = 3
	KInterpolationLow     InterpolationQuality = 2
	KInterpolationMedium  InterpolationQuality = 4
	KInterpolationNone    InterpolationQuality = 1
)

type KeyCode 

type KeyCode uint16

Represents the virtual key codes used in keyboard events. Full Topic

type LayerRef 

type LayerRef uintptr

An offscreen context for reusing content drawn with Core Graphics. Full Topic

type LineCap 

type LineCap int32

Styles for rendering the endpoint of a stroked line. Full Topic 

const (
	KLineCapButt   LineCap = 0
	KLineCapRound  LineCap = 1
	KLineCapSquare LineCap = 2
)

type LineJoin 

type LineJoin int32

Junction types for stroked lines. Full Topic 

const (
	KLineJoinBevel LineJoin = 2
	KLineJoinMiter LineJoin = 0
	KLineJoinRound LineJoin = 1
)

type MomentumScrollPhase 

type MomentumScrollPhase uint32
[Full Topic]

const (
	KMomentumScrollPhaseBegin    MomentumScrollPhase = 1
	KMomentumScrollPhaseContinue MomentumScrollPhase = 2
	KMomentumScrollPhaseEnd      MomentumScrollPhase = 3
	KMomentumScrollPhaseNone     MomentumScrollPhase = 0
)

type MouseButton 

type MouseButton uint32

Constants that specify buttons on a one, two, or three-button mouse. Full Topic 

const (
	KMouseButtonCenter MouseButton = 2
	KMouseButtonLeft   MouseButton = 0
	KMouseButtonRight  MouseButton = 1
)

type MutablePathRef 

type MutablePathRef uintptr //*_Ctype_struct_CGPath

A mutable graphics path: a mathematical description of shapes or lines to be drawn in a graphics context. Full Topic

type OpenGLDisplayMask 

type OpenGLDisplayMask uint32

A bitmask used in OpenGL to specify a set of attached displays. Full Topic

type PDFAccessPermissions 

type PDFAccessPermissions uint32
[Full Topic]

const (
	KPDFAllowsCommenting           PDFAccessPermissions = 64
	KPDFAllowsContentAccessibility PDFAccessPermissions = 32
	KPDFAllowsContentCopying       PDFAccessPermissions = 16
	KPDFAllowsDocumentAssembly     PDFAccessPermissions = 8
	KPDFAllowsDocumentChanges      PDFAccessPermissions = 4
	KPDFAllowsFormFieldEntry       PDFAccessPermissions = 128
	KPDFAllowsHighQualityPrinting  PDFAccessPermissions = 2
	KPDFAllowsLowQualityPrinting   PDFAccessPermissions = 1
)

type PDFArrayApplierBlock 

type PDFArrayApplierBlock = func(index uint, value unsafe.Pointer, info unsafe.Pointer) bool
[Full Topic]

type PDFBoolean 

type PDFBoolean uint8

A PDF Boolean value. Full Topic

type PDFBox 

type PDFBox int32

Box types for a PDF page. Full Topic 

const (
	KPDFArtBox   PDFBox = 4
	KPDFBleedBox PDFBox = 2
	KPDFCropBox  PDFBox = 1
	KPDFMediaBox PDFBox = 0
	KPDFTrimBox  PDFBox = 3
)

type PDFDataFormat 

type PDFDataFormat int32

The encoding format of PDF data. Full Topic 

const (
	PDFDataFormatJPEG2000    PDFDataFormat = 2
	PDFDataFormatJPEGEncoded PDFDataFormat = 1
	PDFDataFormatRaw         PDFDataFormat = 0
)

type PDFDictionaryApplierBlock 

type PDFDictionaryApplierBlock = func(key *uint8, value unsafe.Pointer, info unsafe.Pointer) bool
[Full Topic]

type PDFDictionaryApplierFunction 

type PDFDictionaryApplierFunction = func(key *uint8, value unsafe.Pointer, info unsafe.Pointer)

Performs custom processing on a key-value pair from a PDF dictionary, using optional contextual information. Full Topic

type PDFDocumentRef 

type PDFDocumentRef uintptr

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

type PDFInteger 

type PDFInteger int32

A PDF integer value. Full Topic

type PDFObjectType 

type PDFObjectType int32

Types of PDF object. Full Topic 

const (
	KPDFObjectTypeArray      PDFObjectType = 7
	KPDFObjectTypeBoolean    PDFObjectType = 2
	KPDFObjectTypeDictionary PDFObjectType = 8
	KPDFObjectTypeInteger    PDFObjectType = 3
	KPDFObjectTypeName       PDFObjectType = 5
	KPDFObjectTypeNull       PDFObjectType = 1
	KPDFObjectTypeReal       PDFObjectType = 4
	KPDFObjectTypeStream     PDFObjectType = 9
	KPDFObjectTypeString     PDFObjectType = 6
)

type PDFOperatorCallback 

type PDFOperatorCallback = func(scanner unsafe.Pointer, info unsafe.Pointer)

Performs custom processing for PDF operators. Full Topic

type PDFPageRef 

type PDFPageRef uintptr

A type that represents a page in a PDF document. Full Topic

type PDFReal 

type PDFReal float64

A PDF real value. Full Topic

type PDFTagType 

type PDFTagType int32
[Full Topic]

const (
	PDFTagTypeAnnotation         PDFTagType = 507
	PDFTagTypeArt                PDFTagType = 102
	PDFTagTypeBibliography       PDFTagType = 504
	PDFTagTypeBlockQuote         PDFTagType = 105
	PDFTagTypeCaption            PDFTagType = 106
	PDFTagTypeCode               PDFTagType = 505
	PDFTagTypeDiv                PDFTagType = 104
	PDFTagTypeDocument           PDFTagType = 100
	PDFTagTypeFigure             PDFTagType = 700
	PDFTagTypeForm               PDFTagType = 702
	PDFTagTypeFormula            PDFTagType = 701
	PDFTagTypeHeader             PDFTagType = 201
	PDFTagTypeHeader1            PDFTagType = 202
	PDFTagTypeHeader2            PDFTagType = 203
	PDFTagTypeHeader3            PDFTagType = 204
	PDFTagTypeHeader4            PDFTagType = 205
	PDFTagTypeHeader5            PDFTagType = 206
	PDFTagTypeHeader6            PDFTagType = 207
	PDFTagTypeIndex              PDFTagType = 109
	PDFTagTypeLabel              PDFTagType = 302
	PDFTagTypeLink               PDFTagType = 506
	PDFTagTypeList               PDFTagType = 300
	PDFTagTypeListBody           PDFTagType = 303
	PDFTagTypeListItem           PDFTagType = 301
	PDFTagTypeNonStructure       PDFTagType = 110
	PDFTagTypeNote               PDFTagType = 502
	PDFTagTypeParagraph          PDFTagType = 200
	PDFTagTypePart               PDFTagType = 101
	PDFTagTypePrivate            PDFTagType = 111
	PDFTagTypeQuote              PDFTagType = 501
	PDFTagTypeReference          PDFTagType = 503
	PDFTagTypeRuby               PDFTagType = 600
	PDFTagTypeRubyAnnotationText PDFTagType = 602
	PDFTagTypeRubyBaseText       PDFTagType = 601
	PDFTagTypeRubyPunctuation    PDFTagType = 603
	PDFTagTypeSection            PDFTagType = 103
	PDFTagTypeSpan               PDFTagType = 500
	PDFTagTypeTOC                PDFTagType = 107
	PDFTagTypeTOCI               PDFTagType = 108
	PDFTagTypeTable              PDFTagType = 400
	PDFTagTypeTableBody          PDFTagType = 405
	PDFTagTypeTableDataCell      PDFTagType = 403
	PDFTagTypeTableFooter        PDFTagType = 406
	PDFTagTypeTableHeader        PDFTagType = 404
	PDFTagTypeTableHeaderCell    PDFTagType = 402
	PDFTagTypeTableRow           PDFTagType = 401
	PDFTagTypeWarichu            PDFTagType = 604
	PDFTagTypeWarichuPunctiation PDFTagType = 606
	PDFTagTypeWarichuText        PDFTagType = 605
)

type PSConverterBeginDocumentCallback 

type PSConverterBeginDocumentCallback = func(info unsafe.Pointer)

Performs custom tasks at the beginning of a PostScript conversion process. Full Topic

type PSConverterBeginPageCallback 

type PSConverterBeginPageCallback = func(info unsafe.Pointer, pageNumber uint, pageInfo corefoundation.DictionaryRef)

Performs custom tasks at the beginning of each page in a PostScript conversion process. Full Topic

type PSConverterCallbacks 

type PSConverterCallbacks struct {
	Version       uint32
	BeginDocument uintptr
	EndDocument   uintptr
	BeginPage     uintptr
	EndPage       uintptr
	NoteProgress  uintptr
	NoteMessage   uintptr
	ReleaseInfo   uintptr
}

A structure for holding the callbacks provided when you create a PostScript converter object. Full Topic

type PSConverterEndDocumentCallback 

type PSConverterEndDocumentCallback = func(info unsafe.Pointer, success bool)

Performs custom tasks at the end of a PostScript conversion process. Full Topic

type PSConverterEndPageCallback 

type PSConverterEndPageCallback = func(info unsafe.Pointer, pageNumber uint, pageInfo corefoundation.DictionaryRef)

Performs custom tasks at the end of each page of a PostScript conversion process. Full Topic

type PSConverterMessageCallback 

type PSConverterMessageCallback = func(info unsafe.Pointer, message corefoundation.StringRef)

Passes messages generated during a PostScript conversion process. Full Topic

type PSConverterProgressCallback 

type PSConverterProgressCallback = func(info unsafe.Pointer)

Reports progress periodically during a PostScript conversion process. Full Topic

type PSConverterRef 

type PSConverterRef uintptr

An opaque data type used to convert PostScript data to PDF data. Full Topic

type PSConverterReleaseInfoCallback 

type PSConverterReleaseInfoCallback = func(info unsafe.Pointer)

Performs custom tasks when a PostScript converter is released. Full Topic

type PathApplierFunction 

type PathApplierFunction = func(info unsafe.Pointer, element *PathElement)

Defines a callback function that can view an element in a graphics path. Full Topic

type PathApplyBlock 

type PathApplyBlock = func(element *PathElement)
[Full Topic]

type PathDrawingMode 

type PathDrawingMode int32

Options for rendering a path. Full Topic 

const (
	KPathEOFill       PathDrawingMode = 1
	KPathEOFillStroke PathDrawingMode = 4
	KPathFill         PathDrawingMode = 0
	KPathFillStroke   PathDrawingMode = 3
	KPathStroke       PathDrawingMode = 2
)

type PathElement 

type PathElement struct {
	Type   uint32
	Points *Point
}

A data structure that provides information about a path element. Full Topic

type PathElementType 

type PathElementType int32

The type of element found in a path. Full Topic 

const (
	KPathElementAddCurveToPoint     PathElementType = 3
	KPathElementAddLineToPoint      PathElementType = 1
	KPathElementAddQuadCurveToPoint PathElementType = 2
	KPathElementCloseSubpath        PathElementType = 4
	KPathElementMoveToPoint         PathElementType = 0
)

type PatternCallbacks 

type PatternCallbacks struct {
	Version     uint32
	DrawPattern uintptr
	ReleaseInfo uintptr
}

A structure that holds a version and two callback functions for drawing a custom pattern. Full Topic

type PatternDrawPatternCallback 

type PatternDrawPatternCallback = func(info unsafe.Pointer, context ContextRef)

Draws a pattern cell. Full Topic

type PatternRef 

type PatternRef uintptr

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

type PatternReleaseInfoCallback 

type PatternReleaseInfoCallback = func(info unsafe.Pointer)

Release private data or resources associated with the pattern. Full Topic

type PatternTiling 

type PatternTiling int32

Different methods for rendering a tiled pattern. Full Topic 

const (
	KPatternTilingConstantSpacing                  PatternTiling = 2
	KPatternTilingConstantSpacingMinimalDistortion PatternTiling = 1
	KPatternTilingNoDistortion                     PatternTiling = 0
)

type Point 

type Point struct {
	X float64
	Y float64
}

A structure that contains a point in a two-dimensional coordinate system. Full Topic

type Rect 

type Rect struct {
	Origin Point
	Size   Size
}

A structure that contains the location and dimensions of a rectangle. Full Topic

type RectCount 

type RectCount uint32

The size of an array of Quartz rectangles. Full Topic

type RectEdge 

type RectEdge uint32

Coordinates that establish the edges of a rectangle. Full Topic 

const (
	RectMaxXEdge RectEdge = 2
	RectMaxYEdge RectEdge = 3
	RectMinXEdge RectEdge = 0
	RectMinYEdge RectEdge = 1
)

type RefreshRate 

type RefreshRate float64

A display’s refresh rate in frames per second. Full Topic

type ScreenRefreshCallback 

type ScreenRefreshCallback = func(count uint32, rects *Rect, userInfo unsafe.Pointer)

A client-supplied callback function that’s invoked when an area of the display is modified or refreshed. Full Topic

type ScreenUpdateMoveCallback 

type ScreenUpdateMoveCallback = func(delta ScreenUpdateMoveDelta, count uint, rects *Rect, userInfo unsafe.Pointer)

A client-supplied callback function invoked when an area of the display is moved. Full Topic

type ScreenUpdateMoveDelta 

type ScreenUpdateMoveDelta struct {
	DX int32
	DY int32
}

The distance, in pixel units, that an onscreen region moves. Full Topic

type ScreenUpdateOperation 

type ScreenUpdateOperation uint32

Types of screen-update operations. Full Topic 

const (
	KScreenUpdateOperationMove                       ScreenUpdateOperation = 1
	KScreenUpdateOperationReducedDirtyRectangleCount ScreenUpdateOperation = 2147483648
	KScreenUpdateOperationRefresh                    ScreenUpdateOperation = 0
)

type ScrollEventUnit 

type ScrollEventUnit uint32

Constants that specify the unit of measurement for a scrolling event. Full Topic 

const (
	KScrollEventUnitLine  ScrollEventUnit = 1
	KScrollEventUnitPixel ScrollEventUnit = 0
)

type ScrollPhase 

type ScrollPhase uint32
[Full Topic]

const (
	KScrollPhaseBegan     ScrollPhase = 1
	KScrollPhaseCancelled ScrollPhase = 8
	KScrollPhaseChanged   ScrollPhase = 2
	KScrollPhaseEnded     ScrollPhase = 4
	KScrollPhaseMayBegin  ScrollPhase = 128
)

type ShadingRef 

type ShadingRef uintptr

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

type Size 

type Size struct {
	Width  float64
	Height float64
}

A structure that contains width and height values. Full Topic

type TextDrawingMode 

type TextDrawingMode int32

Modes for rendering text. Full Topic 

const (
	KTextClip           TextDrawingMode = 7
	KTextFill           TextDrawingMode = 0
	KTextFillClip       TextDrawingMode = 4
	KTextFillStroke     TextDrawingMode = 2
	KTextFillStrokeClip TextDrawingMode = 6
	KTextInvisible      TextDrawingMode = 3
	KTextStroke         TextDrawingMode = 1
	KTextStrokeClip     TextDrawingMode = 5
)

type TextEncoding 

type TextEncoding int32

Text encodings for fonts. Full Topic 

const (
	KEncodingFontSpecific TextEncoding = 0
	KEncodingMacRoman     TextEncoding = 1
)

type Vector 

type Vector struct {
	Dx float64
	Dy float64
}

A structure that contains a two-dimensional vector. Full Topic

type WheelCount 

type WheelCount uint32

Represents the number of wheels being set in a scroll wheel event. Full Topic

type WindowBackingType 

type WindowBackingType uint32

The data type used to specify the backing option for a given window. Full Topic 

const (
	KBackingStoreBuffered    WindowBackingType = 2
	KBackingStoreNonretained WindowBackingType = 1
	KBackingStoreRetained    WindowBackingType = 0
)

type WindowID 

type WindowID uint32

The data type used to store window identifiers. Full Topic

type WindowImageOption 

type WindowImageOption uint32

The data type to use to specify the type of image to be generated for a window. Full Topic 

const (
	KWindowImageBestResolution      WindowImageOption = 8
	KWindowImageBoundsIgnoreFraming WindowImageOption = 1
	KWindowImageDefault             WindowImageOption = 0
	KWindowImageNominalResolution   WindowImageOption = 16
	KWindowImageOnlyShadows         WindowImageOption = 4
	KWindowImageShouldBeOpaque      WindowImageOption = 2
)

type WindowLevel 

type WindowLevel int32

A level assigned to a window by an application framework. Full Topic

type WindowLevelKey 

type WindowLevelKey int32

Keys that represent the standard window levels in macOS. Quartz includes these keys to support application frameworks like Cocoa. Applications do not need to use them directly. Full Topic 

const (
	KAssistiveTechHighWindowLevelKey WindowLevelKey = 20
	KBackstopMenuLevelKey            WindowLevelKey = 3
	KBaseWindowLevelKey              WindowLevelKey = 0
	KCursorWindowLevelKey            WindowLevelKey = 19
	KDesktopIconWindowLevelKey       WindowLevelKey = 18
	KDesktopWindowLevelKey           WindowLevelKey = 2
	KDockWindowLevelKey              WindowLevelKey = 7
	KDraggingWindowLevelKey          WindowLevelKey = 12
	KFloatingWindowLevelKey          WindowLevelKey = 5
	KHelpWindowLevelKey              WindowLevelKey = 16
	KMainMenuWindowLevelKey          WindowLevelKey = 8
	KMaximumWindowLevelKey           WindowLevelKey = 14
	KMinimumWindowLevelKey           WindowLevelKey = 1
	KModalPanelWindowLevelKey        WindowLevelKey = 10
	KNormalWindowLevelKey            WindowLevelKey = 4
	KNumberOfWindowLevelKeys         WindowLevelKey = 21
	KOverlayWindowLevelKey           WindowLevelKey = 15
	KPopUpMenuWindowLevelKey         WindowLevelKey = 11
	KScreenSaverWindowLevelKey       WindowLevelKey = 13
	KStatusWindowLevelKey            WindowLevelKey = 9
	KTornOffMenuWindowLevelKey       WindowLevelKey = 6
	KUtilityWindowLevelKey           WindowLevelKey = 17
)

type WindowListOption 

type WindowListOption uint32

The data type used to specify the options for gathering a list of windows. Full Topic 

const (
	KWindowListExcludeDesktopElements    WindowListOption = 16
	KWindowListOptionAll                 WindowListOption = 0
	KWindowListOptionIncludingWindow     WindowListOption = 8
	KWindowListOptionOnScreenAboveWindow WindowListOption = 2
	KWindowListOptionOnScreenBelowWindow WindowListOption = 4
	KWindowListOptionOnScreenOnly        WindowListOption = 1
)

type WindowSharingType 

type WindowSharingType uint32

The data type used to specify the sharing mode used by a window. Full Topic 

const (
	KWindowSharingNone      WindowSharingType = 0
	KWindowSharingReadOnly  WindowSharingType = 1
	KWindowSharingReadWrite WindowSharingType = 2
)

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