painter

Documentation

Index

• type BufPainter
  • func New() (*BufPainter, error)
  • func (p *BufPainter) HandleOP(op interface{}) error
  • func (p *BufPainter) HandleRaw(msg []byte) error
  • func (p *BufPainter) Height() int
  • func (p *BufPainter) ImageData() []byte
  • func (p *BufPainter) Init(op InitOP)
  • func (p *BufPainter) Line(op LineOP)
  • func (p *BufPainter) Set(buf []byte)
  • func (p *BufPainter) Text(op TextOP)
  • func (p *BufPainter) Width() int
• type FontCache
  • func (f FontCache) Load(fd draw2d.FontData) (*truetype.Font, error)
  • func (f *FontCache) Store(fd draw2d.FontData, tf *truetype.Font)
• type InitOP
• type LineOP
• type Message
  • func (m Message) MarshalJSON() ([]byte, error)
  • func (m *Message) UnmarshalJSON(raw []byte) error
• type TextOP

Types

type BufPainter

type BufPainter struct {
	OnInit func(InitOP)
	// contains filtered or unexported fields
}

func New

func New() (*BufPainter, error)

func (*BufPainter) HandleOP

func (p *BufPainter) HandleOP(op interface{}) error

func (*BufPainter) HandleRaw

func (p *BufPainter) HandleRaw(msg []byte) error

func (*BufPainter) Height

func (p *BufPainter) Height() int

func (*BufPainter) ImageData

func (p *BufPainter) ImageData() []byte

func (*BufPainter) Init

func (p *BufPainter) Init(op InitOP)

func (*BufPainter) Line

func (p *BufPainter) Line(op LineOP)

func (*BufPainter) Set

func (p *BufPainter) Set(buf []byte)

func (*BufPainter) Text

func (p *BufPainter) Text(op TextOP)

func (*BufPainter) Width

func (p *BufPainter) Width() int

type FontCache

type FontCache map[string]*truetype.Font

func (FontCache) Load

func (f FontCache) Load(fd draw2d.FontData) (*truetype.Font, error)

func (*FontCache) Store

func (f *FontCache) Store(fd draw2d.FontData, tf *truetype.Font)

type InitOP

type InitOP struct {
	Width, Height int
	Data          []byte
}

This ops will be marshalled with the wrapper struct

type LineOP

type LineOP struct {
	Color  color.RGBA
	Width  float64
	X1, Y1 float64
	X2, Y2 float64
}

type Message

type Message struct {
	Payload interface{}
}

OP Wrapper

func (Message) MarshalJSON

func (m Message) MarshalJSON() ([]byte, error)

func (*Message) UnmarshalJSON

func (m *Message) UnmarshalJSON(raw []byte) error

type TextOP

type TextOP struct {
	Color color.RGBA
	Size  float64
	X, Y  float64
	Text  string
}