eventloop-0.4.0.0: A different take on an IO system. Based on Amanda's IO loop, this eventloop takes a function that maps input events to output events. It can easily be extended by modules that represent IO devices or join multiple modules together.

Safe HaskellNone
LanguageHaskell2010

Eventloop.Module.Websocket.Canvas

Synopsis

Documentation

defaultCanvasModuleConfiguration :: EventloopModuleConfiguration Source

defaultCanvasModuleIOState :: IOState Source

canvasModuleIdentifier :: EventloopModuleIdentifier Source

canvasInitializer :: Initializer Source

canvasEventRetriever :: EventRetriever Source

canvasEventSender :: EventSender Source

canvasTeardown :: Teardown Source

sendRoutedMessageOut :: Connection -> RoutedMessageOut -> IO () Source

router :: ReceiveBuffer -> CanvasUserReceiveBuffer -> CanvasSystemReceiveBuffer -> IO () Source

measureText :: IOState -> CanvasId -> CanvasText -> IO ScreenDimensions Source

type CanvasUserReceiveBuffer = MVar [CanvasIn] Source

type CanvasSystemReceiveBuffer = MVar SystemCanvasIn Source

type Opcode = Int Source

type ScreenMetric = Int Source

type ScreenX = ScreenMetric Source

type ScreenY = ScreenMetric Source

type ScreenWidth = ScreenMetric Source

type ScreenHeight = ScreenMetric Source

type ScreenRadius = ScreenMetric Source

type ScreenAngle Source

Arguments

 = ScreenMetric

In degrees

type ScreenPoint = (ScreenX, ScreenY) Source

type ScreenDimensions = (ScreenWidth, ScreenHeight) Source

type ScreenStartingPoint = ScreenPoint Source

type ScreenControlPoint = ScreenPoint Source

type ScreenEndPoint = ScreenPoint Source

type ScreenStartingAngle = ScreenAngle Source

type ScreenEndAngle = ScreenAngle Source

type CanvasId = NumericId Source

type ZIndex = Int Source

type ScreenColorMetric = Int Source

type ScreenRed = ScreenColorMetric Source

type ScreenGreen = ScreenColorMetric Source

type ScreenBlue = ScreenColorMetric Source

type ScreenAlpha = Float Source

type ScreenColor = (ScreenRed, ScreenGreen, ScreenBlue, ScreenAlpha) Source

type ScreenPixel = ScreenColor Source

type ColorStopOffset = Float Source

type ScreenCircle = (ScreenPoint, ScreenRadius) Source

type ScaleUnit = Float Source

type ScaleX = ScaleUnit Source

type ScaleY = ScaleUnit Source

type ScreenLineThickness = ScreenMetric Source

type FontFamily = [Char] Source

type FontSize = Int Source

data RoutedMessageIn Source

Constructors

InUserCanvas CanvasIn 
InSystemCanvas SystemCanvasIn 

Instances

data RoutedMessageOut Source

Constructors

OutUserCanvas CanvasOut 
OutSystemCanvas SystemCanvasOut 

Instances

data SystemCanvasIn Source

Opcode: 2100

Constructors

SystemMeasuredText CanvasId CanvasText ScreenDimensions

Opcode: 2101

Instances

data SystemCanvasOut Source

Opcode: 2000

Constructors

SystemMeasureText CanvasId CanvasText

Opcode: 2001

Instances

data CanvasIn Source

Opcode: 0100

Constructors

MeasuredText CanvasId CanvasText ScreenDimensions

Opcode: 0101

Instances

data CanvasOut Source

Reserved type words Type: t | Opcode Arguments: a | List of arguments for that data type Route: r | Either s for system or u for user Object: o | The object that is beneath

Example: {r: s, o: {SystemMeasuredText object}}

SystemMeasuredText object: {t:2102, a:[CanvasId, CanvasText object, ScreenDimensions]}

Opcode: 0200

Constructors

SetupCanvas CanvasId ZIndex ScreenDimensions CSSPosition

Opcode: 0201

TeardownCanvas CanvasId

Opcode: 0202

CanvasOperations CanvasId [CanvasOperation]

Opcode: 0203

MeasureText CanvasId CanvasText

Opcode: 0204

Instances

data CanvasOperation Source

Opcode: 0300

Constructors

DrawPath ScreenStartingPoint [ScreenPathPart] PathStroke PathFill

Opcode: 0301

DrawText CanvasText ScreenPoint TextStroke TextFill

Opcode: 0302

DoTransform CanvasTransform

Opcode: 0303

Clear ClearPart

Opcode: 0304

Instances

data ScreenPathPart Source

Opcode: 0400

Constructors

MoveTo ScreenPoint

Opcode: 0401

LineTo ScreenPoint

Opcode: 0402

BezierCurveTo ScreenControlPoint ScreenControlPoint ScreenEndPoint

Opcode: 0403

QuadraticCurveTo ScreenControlPoint ScreenEndPoint

Opcode: 0404

ArcTo ScreenControlPoint ScreenControlPoint ScreenRadius

Opcode: 0405

Arc ScreenCircle ScreenStartingAngle ScreenEndAngle

Opcode: 0406

Rectangle ScreenPoint ScreenDimensions

Opcode: 0407

Instances

type PathRenderStrokeStyle = RenderStyle Source

Opcode: 0500

data PathStroke Source

Constructors

PathStroke ScreenLineThickness PathRenderStrokeStyle

Opcode: 0501

NoPathStroke

Opcode: 0502

Instances

type PathRenderFillStyle = RenderStyle Source

Opcode: 0600

data PathFill Source

Constructors

PathFill PathRenderFillStyle

Opcode: 0601

NoPathFill

Opcode: 0602

Instances

type CanvasColorStop = (ColorStopOffset, ScreenColor) Source

Opcode: 0700

data RenderStyle Source

Constructors

CanvasColor ScreenColor

Opcode: 0701

CanvasGradient CanvasGradientType [CanvasColorStop]

Opcode:0702

CanvasPattern CanvasImage PatternRepetition

Opcode: 0703

Instances

data CanvasImage Source

Opcode: 0800

Constructors

CanvasElement CanvasId ScreenPoint ScreenDimensions

Opcode: 0801

ImageData ScreenDimensions [ScreenPixel]

Opcode: 0802 [ScreenPixel] should be as long as width * height * 4

Instances

data PatternRepetition Source

Opcode: 0900

Constructors

Repeat

Opcode: 0901

RepeatX

Opcode: 0902

RepeatY

Opcode: 0903

NoRepeat

Opcode: 0904

Instances

data CanvasGradientType Source

Opcode: 1000

Constructors

RadialGradient ScreenCircle ScreenCircle

Opcode: 1001 First circle = inner circle, Second circle is enclosing circle

LinearGradient ScreenPoint ScreenPoint

Opcode: 1002

Instances

data CanvasText Source

Opcode: 1200

Constructors

CanvasText [Char] Font Alignment

Opcode: 1201

Instances

data Font Source

Opcode: 1300

Constructors

Font FontFamily FontSize

Opcode: 1301

Instances

type TextStrokeRenderStyle = RenderStyle Source

Opcode: 1400

type TextFillRenderStyle = RenderStyle Source

data TextStroke Source

Constructors

TextStroke ScreenLineThickness TextStrokeRenderStyle

Opcode: 1401

NoTextStroke

Opcode: 1402

Instances

data TextFill Source

Opcode: 2400

Constructors

TextFill TextFillRenderStyle

Opcode: 2401

NoTextFill

Opcode: 2402

Instances

data Alignment Source

Opcode: 1500

Constructors

AlignLeft

Opcode: 1501

AlignRight

Opcode: 1502

AlignCenter

Opcode: 1503

AlignStart

Opcode: 1504

AlignEnd

Opcode: 1505

Instances

type TransformUnit = Float Source

Opcode: 1600

type TransformationMatrix = (TransformUnit, TransformUnit, TransformUnit, TransformUnit, TransformUnit, TransformUnit) Source

data CanvasTransform Source

Constructors

Save

Opcode: 1601

Restore

Opcode: 1602

Translate ScreenPoint

Opcode: 1603

Rotate ScreenAngle

Opcode: 1604

Scale ScaleX ScaleY

Opcode: 1605

Transform TransformationMatrix

Opcode: 1606

SetTransform TransformationMatrix

Opcode: 1607

ResetTransform

Opcode: 1608

Instances

type CSSLeftOffset = CSSUnit Source

Opcode: 2200

type CSSTopOffset = CSSUnit Source

type CSSMeasurements = (CSSLeftOffset, CSSTopOffset) Source

data CSSPosition Source

Constructors

CSSPosition CSSBindPoint CSSMeasurements

Opcode: 2201

Instances

data CSSBindPoint Source

Opcode: 2300

Constructors

CSSFromCenter

Opcode: 2301

CSSFromDefault

Opcode: 2302 Usually this is the top left corner of the element

Instances

data CSSUnit Source

Opcode: 1800

Constructors

CSSPixels Int

Opcode: 1801

CSSPercentage Int

Opcode: 1802

Instances

data ClearPart Source

Opcode: 1900

Constructors

ClearRectangle ScreenPoint ScreenDimensions

Opcode: 1901

ClearCanvas

Opcode: 1902

Instances