canvas

package
v0.1.21 Latest Latest
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 Go to latest Published: Jun 30, 2026 License: GPL-3.0 Imports: 4 Imported by: 0

Documentation

Overview

Package canvas provides helpers for the plugin canvas stream protocol.

Index

Constants

View Source 
const (
	PanelThemeLight = plugin.PanelThemeLight
	PanelThemeDark  = plugin.PanelThemeDark
)
View Source 
const (
	PointerDown   = "pointerdown"
	PointerMove   = "pointermove"
	PointerUp     = "pointerup"
	PointerCancel = "pointercancel"
)

Variables

View Source 
var ErrInvalidInput = plugin.ErrInvalidInput

Functions

func WriteFrame 

func WriteFrame(w io.Writer, frame Frame) error

Types

type Announce 

type Announce struct {
	Text string       `json:"text,omitempty"`
	Mode AnnounceMode `json:"mode,omitempty"`
}

func (Announce) MarshalJSON 

func (c Announce) MarshalJSON() ([]byte, error)

type AnnounceMode 

type AnnounceMode string
const (
	AnnouncePolite    AnnounceMode = "polite"
	AnnounceAssertive AnnounceMode = "assertive"
)

type Arc 

type Arc struct {
	Paint
	X                float64 `json:"x,omitempty"`
	Y                float64 `json:"y,omitempty"`
	Radius           float64 `json:"radius,omitempty"`
	StartAngle       float64 `json:"startAngle,omitempty"`
	EndAngle         float64 `json:"endAngle,omitempty"`
	CounterClockwise bool    `json:"counterclockwise,omitempty"`
}

func (Arc) MarshalJSON 

func (c Arc) MarshalJSON() ([]byte, error)

type BezierCurve 

type BezierCurve struct {
	Paint
	X0   float64 `json:"x0,omitempty"`
	Y0   float64 `json:"y0,omitempty"`
	CP1X float64 `json:"cp1x,omitempty"`
	CP1Y float64 `json:"cp1y,omitempty"`
	CP2X float64 `json:"cp2x,omitempty"`
	CP2Y float64 `json:"cp2y,omitempty"`
	X    float64 `json:"x,omitempty"`
	Y    float64 `json:"y,omitempty"`
}

func (BezierCurve) MarshalJSON 

func (c BezierCurve) MarshalJSON() ([]byte, error)

type Circle 

type Circle struct {
	Paint
	X      float64 `json:"x,omitempty"`
	Y      float64 `json:"y,omitempty"`
	Radius float64 `json:"radius,omitempty"`
}

func (Circle) MarshalJSON 

func (c Circle) MarshalJSON() ([]byte, error)

type Clear 

type Clear struct {
	Color  string  `json:"color,omitempty"`
	X      float64 `json:"x,omitempty"`
	Y      float64 `json:"y,omitempty"`
	Width  float64 `json:"width,omitempty"`
	Height float64 `json:"height,omitempty"`
}

func (Clear) MarshalJSON 

func (c Clear) MarshalJSON() ([]byte, error)

type Clip 

type Clip struct {
	Shape    RegionShape `json:"shape,omitempty"`
	D        string      `json:"d,omitempty"`
	X        float64     `json:"x,omitempty"`
	Y        float64     `json:"y,omitempty"`
	Width    float64     `json:"width,omitempty"`
	Height   float64     `json:"height,omitempty"`
	Radius   float64     `json:"radius,omitempty"`
	Radii    *Radii      `json:"radii,omitempty"`
	Points   []Point     `json:"points,omitempty"`
	FillRule FillRule    `json:"fillRule,omitempty"`
}

func (Clip) MarshalJSON 

func (c Clip) MarshalJSON() ([]byte, error)

type Command 

type Command interface {
	// contains filtered or unexported methods
}

type CommandType 

type CommandType string
const (
	CommandClear          CommandType = "clear"
	CommandSet            CommandType = "set"
	CommandRegions        CommandType = "regions"
	CommandSave           CommandType = "save"
	CommandRestore        CommandType = "restore"
	CommandResetTransform CommandType = "resetTransform"
	CommandTranslate      CommandType = "translate"
	CommandScale          CommandType = "scale"
	CommandRotate         CommandType = "rotate"
	CommandTransform      CommandType = "transform"
	CommandStyle          CommandType = "style"
	CommandResetStyle     CommandType = "resetStyle"
	CommandLineDash       CommandType = "lineDash"
	CommandShadow         CommandType = "shadow"
	CommandGradient       CommandType = "gradient"
	CommandPattern        CommandType = "pattern"
	CommandClip           CommandType = "clip"
	CommandRect           CommandType = "rect"
	CommandLine           CommandType = "line"
	CommandPolyline       CommandType = "polyline"
	CommandPolygon        CommandType = "polygon"
	CommandArc            CommandType = "arc"
	CommandQuadraticCurve CommandType = "quadraticCurve"
	CommandBezierCurve    CommandType = "bezierCurve"
	CommandCircle         CommandType = "circle"
	CommandEllipse        CommandType = "ellipse"
	CommandPath           CommandType = "path"
	CommandText           CommandType = "text"
	CommandFillText       CommandType = "fillText"
	CommandStrokeText     CommandType = "strokeText"
	CommandTextBox        CommandType = "textBox"
	CommandMeasureText    CommandType = "measureText"
	CommandImage          CommandType = "image"
	CommandImageData      CommandType = "imageData"
	CommandSnapshot       CommandType = "snapshot"
	CommandCursor         CommandType = "cursor"
	CommandFocusRegion    CommandType = "focusRegion"
	CommandAnnounce       CommandType = "announce"
)

type CompositeOperation 

type CompositeOperation string
const (
	CompositeSourceOver      CompositeOperation = "source-over"
	CompositeSourceIn        CompositeOperation = "source-in"
	CompositeSourceOut       CompositeOperation = "source-out"
	CompositeSourceAtop      CompositeOperation = "source-atop"
	CompositeDestinationOver CompositeOperation = "destination-over"
	CompositeDestinationIn   CompositeOperation = "destination-in"
	CompositeDestinationOut  CompositeOperation = "destination-out"
	CompositeDestinationAtop CompositeOperation = "destination-atop"
	CompositeLighter         CompositeOperation = "lighter"
	CompositeCopy            CompositeOperation = "copy"
	CompositeXOR             CompositeOperation = "xor"
	CompositeMultiply        CompositeOperation = "multiply"
	CompositeScreen          CompositeOperation = "screen"
	CompositeOverlay         CompositeOperation = "overlay"
	CompositeDarken          CompositeOperation = "darken"
	CompositeLighten         CompositeOperation = "lighten"
	CompositeColorDodge      CompositeOperation = "color-dodge"
	CompositeColorBurn       CompositeOperation = "color-burn"
	CompositeHardLight       CompositeOperation = "hard-light"
	CompositeSoftLight       CompositeOperation = "soft-light"
	CompositeDifference      CompositeOperation = "difference"
	CompositeExclusion       CompositeOperation = "exclusion"
	CompositeHue             CompositeOperation = "hue"
	CompositeSaturation      CompositeOperation = "saturation"
	CompositeColor           CompositeOperation = "color"
	CompositeLuminosity      CompositeOperation = "luminosity"
)

type Cursor 

type Cursor struct {
	Value string `json:"value,omitempty"`
}

func (Cursor) MarshalJSON 

func (c Cursor) MarshalJSON() ([]byte, error)

type Ellipse 

type Ellipse struct {
	Paint
	X        float64 `json:"x,omitempty"`
	Y        float64 `json:"y,omitempty"`
	RadiusX  float64 `json:"radiusX,omitempty"`
	RadiusY  float64 `json:"radiusY,omitempty"`
	Rotation float64 `json:"rotation,omitempty"`
}

func (Ellipse) MarshalJSON 

func (c Ellipse) MarshalJSON() ([]byte, error)

type Event 

type Event interface {
	EventType() EventType
	// contains filtered or unexported methods
}

func DecodeEvent 

func DecodeEvent(r io.Reader) (Event, error)

func ParseEvent 

func ParseEvent(data []byte) (Event, error)

type EventType 

type EventType string
const (
	EventReady    EventType = "ready"
	EventResize   EventType = "resize"
	EventPointer  EventType = "pointer"
	EventWheel    EventType = "wheel"
	EventKey      EventType = "key"
	EventMetrics  EventType = "textMetrics"
	EventSnapshot EventType = "snapshot"
)

type FillRule 

type FillRule string
const (
	FillRuleNonZero FillRule = "nonzero"
	FillRuleEvenOdd FillRule = "evenodd"
)

type FillText 

type FillText struct {
	Paint
	X        float64  `json:"x,omitempty"`
	Y        float64  `json:"y,omitempty"`
	Text     string   `json:"text,omitempty"`
	MaxWidth *float64 `json:"maxWidth,omitempty"`
}

func (FillText) MarshalJSON 

func (c FillText) MarshalJSON() ([]byte, error)

type FocusRegion 

type FocusRegion struct {
	ID string `json:"id,omitempty"`
}

func (FocusRegion) MarshalJSON 

func (c FocusRegion) MarshalJSON() ([]byte, error)

type Frame 

type Frame struct {
	Commands []Command `json:"commands,omitempty"`
	Regions  []Region  `json:"regions,omitempty"`
}

type Gradient 

type Gradient struct {
	ID         string         `json:"id"`
	Kind       GradientKind   `json:"kind"`
	X0         float64        `json:"x0,omitempty"`
	Y0         float64        `json:"y0,omitempty"`
	X1         float64        `json:"x1,omitempty"`
	Y1         float64        `json:"y1,omitempty"`
	R0         float64        `json:"r0,omitempty"`
	R1         float64        `json:"r1,omitempty"`
	X          float64        `json:"x,omitempty"`
	Y          float64        `json:"y,omitempty"`
	StartAngle float64        `json:"startAngle,omitempty"`
	Stops      []GradientStop `json:"stops,omitempty"`
}

func (Gradient) MarshalJSON 

func (c Gradient) MarshalJSON() ([]byte, error)

type GradientKind 

type GradientKind string
const (
	GradientLinear GradientKind = "linear"
	GradientRadial GradientKind = "radial"
	GradientConic  GradientKind = "conic"
)

type GradientStop 

type GradientStop struct {
	Offset float64 `json:"offset"`
	Color  string  `json:"color"`
}

type Image 

type Image struct {
	Paint
	Src          string  `json:"src,omitempty"`
	X            float64 `json:"x,omitempty"`
	Y            float64 `json:"y,omitempty"`
	Width        float64 `json:"width,omitempty"`
	Height       float64 `json:"height,omitempty"`
	SourceX      float64 `json:"sourceX,omitempty"`
	SourceY      float64 `json:"sourceY,omitempty"`
	SourceWidth  float64 `json:"sourceWidth,omitempty"`
	SourceHeight float64 `json:"sourceHeight,omitempty"`
	Smoothing    *bool   `json:"smoothing,omitempty"`
}

func (Image) MarshalJSON 

func (c Image) MarshalJSON() ([]byte, error)

type ImageData 

type ImageData struct {
	X      float64 `json:"x,omitempty"`
	Y      float64 `json:"y,omitempty"`
	Width  int     `json:"width,omitempty"`
	Height int     `json:"height,omitempty"`
	Data   []int   `json:"data,omitempty"`
}

func (ImageData) MarshalJSON 

func (c ImageData) MarshalJSON() ([]byte, error)

type KeyEvent 

type KeyEvent struct {
	Type      EventType     `json:"type"`
	Event     string        `json:"event"`
	Key       string        `json:"key"`
	Code      string        `json:"code"`
	Repeat    bool          `json:"repeat,omitempty"`
	Modifiers ModifierState `json:"modifiers,omitempty"`
}

func (KeyEvent) EventType 

func (KeyEvent) EventType() EventType

type Line 

type Line struct {
	Paint
	X1 float64 `json:"x1,omitempty"`
	Y1 float64 `json:"y1,omitempty"`
	X2 float64 `json:"x2,omitempty"`
	Y2 float64 `json:"y2,omitempty"`
}

func (Line) MarshalJSON 

func (c Line) MarshalJSON() ([]byte, error)

type LineCap 

type LineCap string
const (
	LineCapButt   LineCap = "butt"
	LineCapRound  LineCap = "round"
	LineCapSquare LineCap = "square"
)

type LineDash 

type LineDash struct {
	Segments []float64 `json:"segments,omitempty"`
	Offset   float64   `json:"offset,omitempty"`
}

func (LineDash) MarshalJSON 

func (c LineDash) MarshalJSON() ([]byte, error)

type LineJoin 

type LineJoin string
const (
	LineJoinBevel LineJoin = "bevel"
	LineJoinRound LineJoin = "round"
	LineJoinMiter LineJoin = "miter"
)

type MeasureText 

type MeasureText struct {
	RequestID string `json:"requestId,omitempty"`
	Text      string `json:"text,omitempty"`
	Font      string `json:"font,omitempty"`
}

func (MeasureText) MarshalJSON 

func (c MeasureText) MarshalJSON() ([]byte, error)

type ModifierState 

type ModifierState struct {
	Alt   bool `json:"alt,omitempty"`
	Ctrl  bool `json:"ctrl,omitempty"`
	Meta  bool `json:"meta,omitempty"`
	Shift bool `json:"shift,omitempty"`
}

type Paint 

type Paint struct {
	Fill         string             `json:"fill,omitempty"`
	Stroke       string             `json:"stroke,omitempty"`
	LineWidth    float64            `json:"lineWidth,omitempty"`
	Font         string             `json:"font,omitempty"`
	Alpha        *float64           `json:"alpha,omitempty"`
	Composite    CompositeOperation `json:"composite,omitempty"`
	LineCap      LineCap            `json:"lineCap,omitempty"`
	LineJoin     LineJoin           `json:"lineJoin,omitempty"`
	TextAlign    TextAlign          `json:"textAlign,omitempty"`
	TextBaseline TextBaseline       `json:"textBaseline,omitempty"`
	FillID       string             `json:"fillId,omitempty"`
	StrokeID     string             `json:"strokeId,omitempty"`
	Filter       string             `json:"filter,omitempty"`
	Direction    string             `json:"direction,omitempty"`
	MiterLimit   *float64           `json:"miterLimit,omitempty"`

	NoFill   bool `json:"-"`
	NoStroke bool `json:"-"`
}

type PanelTheme 

type PanelTheme = plugin.PanelTheme

type Path 

type Path struct {
	Paint
	D        string   `json:"d,omitempty"`
	FillRule FillRule `json:"fillRule,omitempty"`
}

func (Path) MarshalJSON 

func (c Path) MarshalJSON() ([]byte, error)

type Pattern 

type Pattern struct {
	ID         string `json:"id"`
	Src        string `json:"src"`
	Repetition string `json:"repetition,omitempty"`
}

func (Pattern) MarshalJSON 

func (c Pattern) MarshalJSON() ([]byte, error)

type Point 

type Point struct {
	X float64 `json:"x"`
	Y float64 `json:"y"`
}

type PointerEvent 

type PointerEvent struct {
	Type        EventType     `json:"type"`
	Event       string        `json:"event"`
	X           float64       `json:"x"`
	Y           float64       `json:"y"`
	Button      int           `json:"button,omitempty"`
	Buttons     int           `json:"buttons,omitempty"`
	PointerID   int           `json:"pointerId,omitempty"`
	PointerType string        `json:"pointerType,omitempty"`
	RegionID    string        `json:"regionId,omitempty"`
	Modifiers   ModifierState `json:"modifiers,omitempty"`
}

func (PointerEvent) EventType 

func (PointerEvent) EventType() EventType

type Polygon 

type Polygon struct {
	Paint
	Points []Point `json:"points,omitempty"`
}

func (Polygon) MarshalJSON 

func (c Polygon) MarshalJSON() ([]byte, error)

type Polyline 

type Polyline struct {
	Paint
	Points []Point `json:"points,omitempty"`
}

func (Polyline) MarshalJSON 

func (c Polyline) MarshalJSON() ([]byte, error)

type QuadraticCurve 

type QuadraticCurve struct {
	Paint
	X0  float64 `json:"x0,omitempty"`
	Y0  float64 `json:"y0,omitempty"`
	CPX float64 `json:"cpx,omitempty"`
	CPY float64 `json:"cpy,omitempty"`
	X   float64 `json:"x,omitempty"`
	Y   float64 `json:"y,omitempty"`
}

func (QuadraticCurve) MarshalJSON 

func (c QuadraticCurve) MarshalJSON() ([]byte, error)

type Radii 

type Radii struct {
	TopLeft     float64 `json:"topLeft,omitempty"`
	TopRight    float64 `json:"topRight,omitempty"`
	BottomRight float64 `json:"bottomRight,omitempty"`
	BottomLeft  float64 `json:"bottomLeft,omitempty"`
}

type RawCommand 

type RawCommand struct {
	Type   CommandType    `json:"type"`
	Fields map[string]any `json:"-"`
}

func (RawCommand) MarshalJSON 

func (c RawCommand) MarshalJSON() ([]byte, error)

type ReadyEvent 

type ReadyEvent struct {
	Type           EventType  `json:"type"`
	Width          float64    `json:"width"`
	Height         float64    `json:"height"`
	ViewportWidth  float64    `json:"viewportWidth,omitempty"`
	ViewportHeight float64    `json:"viewportHeight,omitempty"`
	Scale          float64    `json:"scale,omitempty"`
	DPR            float64    `json:"dpr"`
	Theme          PanelTheme `json:"theme,omitempty"`
}

func (ReadyEvent) EventType 

func (ReadyEvent) EventType() EventType

type Rect 

type Rect struct {
	Paint
	X      float64 `json:"x,omitempty"`
	Y      float64 `json:"y,omitempty"`
	Width  float64 `json:"width,omitempty"`
	Height float64 `json:"height,omitempty"`
	Radius float64 `json:"radius,omitempty"`
	Radii  *Radii  `json:"radii,omitempty"`
}

func (Rect) MarshalJSON 

func (c Rect) MarshalJSON() ([]byte, error)

type Region 

type Region struct {
	ID             string      `json:"id"`
	Shape          RegionShape `json:"shape,omitempty"`
	X              float64     `json:"x"`
	Y              float64     `json:"y"`
	Width          float64     `json:"width,omitempty"`
	Height         float64     `json:"height,omitempty"`
	Radius         float64     `json:"radius,omitempty"`
	Radii          *Radii      `json:"radii,omitempty"`
	Points         []Point     `json:"points,omitempty"`
	D              string      `json:"d,omitempty"`
	Cursor         string      `json:"cursor,omitempty"`
	Label          string      `json:"label,omitempty"`
	CapturePointer bool        `json:"capturePointer,omitempty"`
}

func CircleRegion 

func CircleRegion(id string, x, y, radius float64, opts ...RegionOption) Region

func PathRegion 

func PathRegion(id, d string, opts ...RegionOption) Region

func PolygonRegion 

func PolygonRegion(id string, points []Point, opts ...RegionOption) Region

func RectRegion 

func RectRegion(id string, x, y, width, height float64, opts ...RegionOption) Region

type RegionOption 

type RegionOption func(*Region)

func WithCapturePointer 

func WithCapturePointer() RegionOption

func WithCursor 

func WithCursor(cursor string) RegionOption

func WithLabel 

func WithLabel(label string) RegionOption

func WithRadii 

func WithRadii(radii Radii) RegionOption

func WithRadius 

func WithRadius(radius float64) RegionOption

type RegionShape 

type RegionShape string
const (
	RegionRect    RegionShape = "rect"
	RegionCircle  RegionShape = "circle"
	RegionPolygon RegionShape = "polygon"
	RegionPath    RegionShape = "path"
)

type Regions 

type Regions struct {
	Items []Region `json:"items,omitempty"`
}

func (Regions) MarshalJSON 

func (c Regions) MarshalJSON() ([]byte, error)

type ResetStyle 

type ResetStyle struct{}

func (ResetStyle) MarshalJSON 

func (c ResetStyle) MarshalJSON() ([]byte, error)

type ResetTransform 

type ResetTransform struct{}

func (ResetTransform) MarshalJSON 

func (c ResetTransform) MarshalJSON() ([]byte, error)

type ResizeEvent 

type ResizeEvent struct {
	Type           EventType  `json:"type"`
	Width          float64    `json:"width"`
	Height         float64    `json:"height"`
	ViewportWidth  float64    `json:"viewportWidth,omitempty"`
	ViewportHeight float64    `json:"viewportHeight,omitempty"`
	Scale          float64    `json:"scale,omitempty"`
	DPR            float64    `json:"dpr"`
	Theme          PanelTheme `json:"theme,omitempty"`
}

func (ResizeEvent) EventType 

func (ResizeEvent) EventType() EventType

type Restore 

type Restore struct{}

func (Restore) MarshalJSON 

func (c Restore) MarshalJSON() ([]byte, error)

type Rotate 

type Rotate struct {
	Angle float64 `json:"angle,omitempty"`
}

func (Rotate) MarshalJSON 

func (c Rotate) MarshalJSON() ([]byte, error)

type Save 

type Save struct{}

func (Save) MarshalJSON 

func (c Save) MarshalJSON() ([]byte, error)

type Scale 

type Scale struct {
	X float64 `json:"x,omitempty"`
	Y float64 `json:"y,omitempty"`
}

func (Scale) MarshalJSON 

func (c Scale) MarshalJSON() ([]byte, error)

type Set 

type Set struct {
	Background string   `json:"background,omitempty"`
	Cursor     string   `json:"cursor,omitempty"`
	Regions    []Region `json:"regions,omitempty"`
}

func (Set) MarshalJSON 

func (c Set) MarshalJSON() ([]byte, error)

type Shadow 

type Shadow struct {
	Color   string  `json:"color,omitempty"`
	Blur    float64 `json:"blur,omitempty"`
	OffsetX float64 `json:"offsetX,omitempty"`
	OffsetY float64 `json:"offsetY,omitempty"`
}

func (Shadow) MarshalJSON 

func (c Shadow) MarshalJSON() ([]byte, error)

type Snapshot 

type Snapshot struct {
	RequestID     string  `json:"requestId,omitempty"`
	MIME          string  `json:"mime,omitempty"`
	Quality       float64 `json:"quality,omitempty"`
	MinIntervalMs int     `json:"minIntervalMs,omitempty"`
}

func (Snapshot) MarshalJSON 

func (c Snapshot) MarshalJSON() ([]byte, error)

type SnapshotEvent 

type SnapshotEvent struct {
	Type      EventType `json:"type"`
	RequestID string    `json:"requestId,omitempty"`
	MIME      string    `json:"mime,omitempty"`
	DataURL   string    `json:"dataUrl,omitempty"`
	Width     float64   `json:"width,omitempty"`
	Height    float64   `json:"height,omitempty"`
}

func (SnapshotEvent) EventType 

func (SnapshotEvent) EventType() EventType

type StrokeText 

type StrokeText struct {
	Paint
	X        float64  `json:"x,omitempty"`
	Y        float64  `json:"y,omitempty"`
	Text     string   `json:"text,omitempty"`
	MaxWidth *float64 `json:"maxWidth,omitempty"`
}

func (StrokeText) MarshalJSON 

func (c StrokeText) MarshalJSON() ([]byte, error)

type Style 

type Style struct {
	Paint
}

func (Style) MarshalJSON 

func (c Style) MarshalJSON() ([]byte, error)

type Text 

type Text struct {
	Paint
	X        float64  `json:"x,omitempty"`
	Y        float64  `json:"y,omitempty"`
	Text     string   `json:"text,omitempty"`
	MaxWidth *float64 `json:"maxWidth,omitempty"`
}

func (Text) MarshalJSON 

func (c Text) MarshalJSON() ([]byte, error)

type TextAlign 

type TextAlign string
const (
	TextAlignStart  TextAlign = "start"
	TextAlignEnd    TextAlign = "end"
	TextAlignLeft   TextAlign = "left"
	TextAlignRight  TextAlign = "right"
	TextAlignCenter TextAlign = "center"
)

type TextBaseline 

type TextBaseline string
const (
	TextBaselineTop         TextBaseline = "top"
	TextBaselineHanging     TextBaseline = "hanging"
	TextBaselineMiddle      TextBaseline = "middle"
	TextBaselineAlphabetic  TextBaseline = "alphabetic"
	TextBaselineIdeographic TextBaseline = "ideographic"
	TextBaselineBottom      TextBaseline = "bottom"
)

type TextBox 

type TextBox struct {
	Paint
	X             float64           `json:"x,omitempty"`
	Y             float64           `json:"y,omitempty"`
	Width         float64           `json:"width,omitempty"`
	Height        float64           `json:"height,omitempty"`
	LineHeight    float64           `json:"lineHeight,omitempty"`
	Padding       float64           `json:"padding,omitempty"`
	MaxLines      int               `json:"maxLines,omitempty"`
	Ellipsis      string            `json:"ellipsis,omitempty"`
	VerticalAlign TextVerticalAlign `json:"verticalAlign,omitempty"`
	Background    string            `json:"background,omitempty"`
	BackgroundID  string            `json:"backgroundId,omitempty"`
	Radius        float64           `json:"radius,omitempty"`
	Radii         *Radii            `json:"radii,omitempty"`
	Text          string            `json:"text,omitempty"`
}

func (TextBox) MarshalJSON 

func (c TextBox) MarshalJSON() ([]byte, error)

type TextMetricsEvent 

type TextMetricsEvent struct {
	Type                     EventType `json:"type"`
	RequestID                string    `json:"requestId,omitempty"`
	Text                     string    `json:"text,omitempty"`
	Width                    float64   `json:"width"`
	ActualBoundingBoxLeft    float64   `json:"actualBoundingBoxLeft,omitempty"`
	ActualBoundingBoxRight   float64   `json:"actualBoundingBoxRight,omitempty"`
	ActualBoundingBoxAscent  float64   `json:"actualBoundingBoxAscent,omitempty"`
	ActualBoundingBoxDescent float64   `json:"actualBoundingBoxDescent,omitempty"`
	FontBoundingBoxAscent    float64   `json:"fontBoundingBoxAscent,omitempty"`
	FontBoundingBoxDescent   float64   `json:"fontBoundingBoxDescent,omitempty"`
	EmHeightAscent           float64   `json:"emHeightAscent,omitempty"`
	EmHeightDescent          float64   `json:"emHeightDescent,omitempty"`
	HangingBaseline          float64   `json:"hangingBaseline,omitempty"`
	AlphabeticBaseline       float64   `json:"alphabeticBaseline,omitempty"`
	IdeographicBaseline      float64   `json:"ideographicBaseline,omitempty"`
}

func (TextMetricsEvent) EventType 

func (TextMetricsEvent) EventType() EventType

type TextVerticalAlign 

type TextVerticalAlign string
const (
	TextVerticalAlignTop    TextVerticalAlign = "top"
	TextVerticalAlignMiddle TextVerticalAlign = "middle"
	TextVerticalAlignBottom TextVerticalAlign = "bottom"
)

type Transform 

type Transform struct {
	A float64 `json:"a"`
	B float64 `json:"b"`
	C float64 `json:"c"`
	D float64 `json:"d"`
	E float64 `json:"e"`
	F float64 `json:"f"`
}

func (Transform) MarshalJSON 

func (c Transform) MarshalJSON() ([]byte, error)

type Translate 

type Translate struct {
	X float64 `json:"x,omitempty"`
	Y float64 `json:"y,omitempty"`
}

func (Translate) MarshalJSON 

func (c Translate) MarshalJSON() ([]byte, error)

type WheelEvent 

type WheelEvent struct {
	Type      EventType     `json:"type"`
	X         float64       `json:"x"`
	Y         float64       `json:"y"`
	DeltaX    float64       `json:"deltaX"`
	DeltaY    float64       `json:"deltaY"`
	DeltaMode int           `json:"deltaMode,omitempty"`
	Modifiers ModifierState `json:"modifiers,omitempty"`
}

func (WheelEvent) EventType 

func (WheelEvent) EventType() EventType

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