svgdata

package module
v0.0.0-...-5926790 Latest Latest
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 Go to latest Published: Aug 5, 2018 License: Apache-2.0 Imports: 9 Imported by: 1

README

svgdata-go

WARNING: This is very early library that I wrote for myself and anything may change at any time.

A go library for representing SVG data and then writing it out. This isn't the best API but it is useful.

The one thing this does well is collect a set of path segment and then construct a Path from those by looking for the segments that match up. This is useful for CAD applications where often times you'll get a collection of path segments and need to assemble continuous paths from those segments.

Documentation

Index

Constants

View Source 
const (
	SvgNs = "http://www.w3.org/2000/svg"
)

Variables

This section is empty.

Functions

func MakeStartElement 

func MakeStartElement(name string, am AttrMap) xml.StartElement

func Marshal 

func Marshal(r *Root, pretty bool) ([]byte, error)

func RegisterNodeCreator 

func RegisterNodeCreator(n string, c nodeCreator)

func SavePathString 

func SavePathString(sps []SubPath) string

Types

type AttrMap 

type AttrMap map[string]string

func (AttrMap) ExtractValue 

func (am AttrMap) ExtractValue(k string) (float64, error)

ExtractValue will pull a value out of the AttrMap. It will convert it to a float and delete it from the map. If it is not in the map 0.0 will be returned. An error will be returned if this is not a parsable value.

func (AttrMap) ExtractValueNoDefault 

func (am AttrMap) ExtractValueNoDefault(k string) (float64, error)

ExtractValue will pull a value out of the AttrMap. It will convert it to a float and delete it from the map. If it is not in the map an error will be returned. An error will be returned if this is not a parsable value.

type Circle 

type Circle struct {
	Center geom.Coord
	Radius float64
	// contains filtered or unexported fields
}

Circle is an SVG element that has no specialized code or representation.

func NewCircle 

func NewCircle(c geom.Coord, r float64) *Circle

func (*Circle) AddChild 

func (n *Circle) AddChild(c Node)

func (*Circle) Attrs 

func (n *Circle) Attrs() AttrMap

func (*Circle) Children 

func (n *Circle) Children() *[]Node

func (*Circle) GetText 

func (n *Circle) GetText() string

func (*Circle) MarshalXML 

func (n *Circle) MarshalXML(e *xml.Encoder, start xml.StartElement) error

func (*Circle) Name 

func (n *Circle) Name() string

func (*Circle) SetText 

func (n *Circle) SetText(t string)

func (*Circle) UnmarshalXML 

func (n *Circle) UnmarshalXML(d *xml.Decoder, start xml.StartElement) error

type Node 

type Node interface {
	xml.Unmarshaler
	xml.Marshaler

	Name() string

	Attrs() AttrMap

	Children() *[]Node
	AddChild(n Node)

	GetText() string
	SetText(t string)
}

func CreateNodeFromName 

func CreateNodeFromName(n xml.Name) Node

func CreatePolygon 

func CreatePolygon() Node

func CreatePolyline 

func CreatePolyline() Node

func NewGroup 

func NewGroup() Node

func NewStyle 

func NewStyle() Node

type Path 

type Path struct {
	SubPaths []SubPath
	// contains filtered or unexported fields
}

func NewPath 

func NewPath() *Path

func (*Path) AddChild 

func (n *Path) AddChild(c Node)

func (*Path) Attrs 

func (n *Path) Attrs() AttrMap

func (*Path) Children 

func (n *Path) Children() *[]Node

func (*Path) GetText 

func (n *Path) GetText() string

func (*Path) MarshalXML 

func (n *Path) MarshalXML(e *xml.Encoder, start xml.StartElement) error

func (*Path) Name 

func (n *Path) Name() string

func (*Path) SetText 

func (n *Path) SetText(t string)

func (*Path) UnmarshalXML 

func (n *Path) UnmarshalXML(d *xml.Decoder, start xml.StartElement) error

type PathCommand 

type PathCommand struct {
	Command byte      // The single character command
	Params  []float64 // The parameters to the command
	// contains filtered or unexported fields
}

type Polyshape 

type Polyshape struct {

	// TODO: Handle Points
	Points []geom.Coord
	// contains filtered or unexported fields
}

Polyshape is an SVG element is a shape specified with a list of straight lines.

func (*Polyshape) AddChild 

func (n *Polyshape) AddChild(c Node)

func (*Polyshape) Attrs 

func (n *Polyshape) Attrs() AttrMap

func (*Polyshape) Children 

func (n *Polyshape) Children() *[]Node

func (*Polyshape) GetText 

func (n *Polyshape) GetText() string

func (*Polyshape) MarshalXML 

func (n *Polyshape) MarshalXML(e *xml.Encoder, start xml.StartElement) error

func (*Polyshape) Name 

func (n *Polyshape) Name() string

func (*Polyshape) SetText 

func (n *Polyshape) SetText(t string)

func (*Polyshape) UnmarshalXML 

func (n *Polyshape) UnmarshalXML(d *xml.Decoder, start xml.StartElement) error

type Rect 

type Rect struct {
	R geom.Rect
	// contains filtered or unexported fields
}

Circle is an SVG element that has no specialized code or representation.

func NewRect 

func NewRect(r geom.Rect) *Rect

func NewRectXYWH 

func NewRectXYWH(x, y, w, h float64) *Rect

func (*Rect) AddChild 

func (n *Rect) AddChild(c Node)

func (*Rect) Attrs 

func (n *Rect) Attrs() AttrMap

func (*Rect) Children 

func (n *Rect) Children() *[]Node

func (*Rect) GetText 

func (n *Rect) GetText() string

func (*Rect) MarshalXML 

func (n *Rect) MarshalXML(e *xml.Encoder, start xml.StartElement) error

func (*Rect) Name 

func (n *Rect) Name() string

func (*Rect) SetText 

func (n *Rect) SetText(t string)

func (*Rect) UnmarshalXML 

func (n *Rect) UnmarshalXML(d *xml.Decoder, start xml.StartElement) error

type Root 

type Root struct {
	// contains filtered or unexported fields
}

Root represents the root <svg> element.

func CreateRoot 

func CreateRoot() *Root

func Unmarshal 

func Unmarshal(data []byte) (*Root, error)

func (*Root) AddChild 

func (n *Root) AddChild(c Node)

func (*Root) Attrs 

func (n *Root) Attrs() AttrMap

func (*Root) Children 

func (n *Root) Children() *[]Node

func (*Root) GetText 

func (n *Root) GetText() string

func (*Root) MarshalXML 

func (n *Root) MarshalXML(e *xml.Encoder, start xml.StartElement) error

func (*Root) Name 

func (n *Root) Name() string

func (*Root) SetText 

func (n *Root) SetText(t string)

func (*Root) UnmarshalXML 

func (n *Root) UnmarshalXML(d *xml.Decoder, start xml.StartElement) error

type SubPath 

type SubPath struct {
	Commands []PathCommand
	// contains filtered or unexported fields
}

func ParsePathString 

func ParsePathString(d string) ([]SubPath, error)

ParsePathString parses an SVG path string. Each command represents a single instance of the command. This is to enable easier further processing.

type Unknown 

type Unknown struct {
	// contains filtered or unexported fields
}

Unknown is an SVG element that has no specialized code or representation.

func (*Unknown) AddChild 

func (n *Unknown) AddChild(c Node)

func (*Unknown) Attrs 

func (n *Unknown) Attrs() AttrMap

func (*Unknown) Children 

func (n *Unknown) Children() *[]Node

func (*Unknown) GetText 

func (n *Unknown) GetText() string

func (*Unknown) MarshalXML 

func (n *Unknown) MarshalXML(e *xml.Encoder, start xml.StartElement) error

func (*Unknown) Name 

func (n *Unknown) Name() string

func (*Unknown) SetText 

func (n *Unknown) SetText(t string)

func (*Unknown) UnmarshalXML 

func (n *Unknown) UnmarshalXML(d *xml.Decoder, start xml.StartElement) error

Source Files

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