tplot

package module
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 Go to latest Published: May 9, 2022 License: MIT Imports: 7 Imported by: 0

README

tplot

A terminal plotting library for tview and tcell written in Golang.

screenshot

License

MIT

Documentation

Index

Constants

This section is empty.

Variables

View Source 
var DefaultBarsRunes = []rune{'▃', '▄', '▆', '█'}
View Source 
var DefaultBlockBindings = &BlockBindings{
	SplitH:       tcell.KeyCtrlS,
	SplitV:       tcell.KeyCtrlV,
	Delete:       tcell.KeyCtrlX,
	FlexBindings: DefaultFlexBindings,
	Reset:        tcell.KeyCtrlO,
}
View Source 
var DefaultFlexBindings = &FlexBindings{
	FocusLeft:  tcell.KeyCtrlH,
	FocusDown:  tcell.KeyCtrlJ,
	FocusUp:    tcell.KeyCtrlK,
	FocusRight: tcell.KeyCtrlL,
}
View Source 
var DefaultOHLCRunes = OHLCRunes{
	Same:          '─',
	HighOpenClose: '┬',
	LowOpenClose:  '┴',
	HighOpen:      '╻',
	LowClose:      '╹',
	High:          '╷',
	Low:           '╵',
	OpenClose:     '┼',
	Open:          '╽',
	Close:         '╿',
	Thick:         '┃',
	Thin:          '│',
}

DefaultOHLCRunes contains the default runes using the box drawing characters. Examples: 

╽   ╷ ╷     │
┃╻  │ ╵ ┃ ─ ┼ ┼ ┬ ┴
╿╹  │
│

See more at: https://en.wikipedia.org/wiki/Box-drawing_character

View Source 
var DefaultTicksRunes = []rune{'⎽', '⎼', '—', '⎻', '⎺'}

Functions

This section is empty.

Types

type Axis 

type Axis struct {
	*tview.Box
	// contains filtered or unexported fields
}

Axis represents a chart Axis. The current implementation only supports a vertical axis.

func NewAxis 

func NewAxis(factory DecimalFactory) *Axis

NewAxis creates a new instance of Axis.

func (*Axis) CalcWidth 

func (a *Axis) CalcWidth() int

CalcWidth calculates the width of the axis.

func (*Axis) Draw 

func (a *Axis) Draw(screen tcell.Screen)

Draw implements tview.Primitive.

func (*Axis) Highlight 

func (a *Axis) Highlight() DecimalValue

Highlight returns the currently highlighted item.

func (*Axis) HighlightStyle 

func (a *Axis) HighlightStyle() tcell.Style

HighlightStyle returns the style for highlighting an item on the axis.

func (*Axis) Scale 

func (a *Axis) Scale() Scale

Scale returns the axis scale. May be nil.

func (*Axis) SetHighlight 

func (a *Axis) SetHighlight(highlight DecimalValue)

SetHighlight sets the value for highlighting.

func (*Axis) SetHighlightStyle 

func (a *Axis) SetHighlightStyle(highlightStyle tcell.Style)

SetHighlightStyle sets the style for highlighting an item on the axis.

func (*Axis) SetScale 

func (a *Axis) SetScale(scale Scale)

SetScale sets the axis acale.

func (*Axis) SetStyle 

func (a *Axis) SetStyle(style tcell.Style)

SetStyle sets a default axis style.

func (*Axis) Style 

func (a *Axis) Style() tcell.Style

Style returns the default axis style.

type AxisBox 

type AxisBox struct {
	*tview.Box
	// contains filtered or unexported fields
}

func NewAxisBox 

func NewAxisBox(axis *Axis, content Primitive) *AxisBox

func (*AxisBox) Draw 

func (a *AxisBox) Draw(screen tcell.Screen)

func (*AxisBox) Position 

func (a *AxisBox) Position() Position

func (*AxisBox) SetPosition 

func (a *AxisBox) SetPosition(position Position)

type Bars 

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

func NewBars 

func NewBars(factory DecimalFactory) *Bars

func (Bars) Data 

func (b Bars) Data() []Decimal

func (Bars) DataSlice 

func (b Bars) DataSlice() []Decimal

DataSlice returns data, but only the items that fit on the screen.

func (*Bars) Draw 

func (b *Bars) Draw(screen tcell.Screen)

func (Bars) Runes 

func (b Bars) Runes() []rune

func (Bars) Scale 

func (b Bars) Scale() Scale

func (Bars) SetData 

func (b Bars) SetData(data []Decimal)

func (Bars) SetRunes 

func (b Bars) SetRunes(runes []rune)

func (Bars) SetScale 

func (b Bars) SetScale(scale Scale)

func (Bars) SetSliceMethod 

func (b Bars) SetSliceMethod(method SliceMethod)

func (Bars) SetSpacing 

func (b Bars) SetSpacing(spacing int)

func (Bars) SetStyle 

func (b Bars) SetStyle(style tcell.Style)

func (Bars) SliceMethod 

func (b Bars) SliceMethod() SliceMethod

func (Bars) Spacing 

func (b Bars) Spacing() int

func (Bars) Style 

func (b Bars) Style() tcell.Style

func (Bars) Values 

func (b Bars) Values() []Decimal

type BlockBindings 

type BlockBindings struct {
	*FlexBindings
	SplitH tcell.Key
	SplitV tcell.Key
	Delete tcell.Key
	Reset  tcell.Key
}

type Container 

type Container struct {
	*tview.Box
	// contains filtered or unexported fields
}

Container is a dynamic box that can dynamically render different primitives.

func NewContainer 

func NewContainer() *Container

func (*Container) Draw 

func (c *Container) Draw(screen tcell.Screen)

func (*Container) Focus 

func (c *Container) Focus(delegate func(p tview.Primitive))

func (*Container) HasFocus 

func (c *Container) HasFocus() bool

func (*Container) InputHandler 

func (c *Container) InputHandler() func(event *tcell.EventKey, setFocus func(p tview.Primitive))

func (*Container) MouseHandler 

func (c *Container) MouseHandler() func(
	action tview.MouseAction, event *tcell.EventMouse, setFocus func(p tview.Primitive),
) (consumed bool, capture tview.Primitive)

func (*Container) SetPrimitive 

func (c *Container) SetPrimitive(item tview.Primitive)

type Decimal 

type Decimal interface {
	IsZero() bool
	Add(Decimal) Decimal
	Sub(Decimal) Decimal
	Mul(Decimal) Decimal
	Div(Decimal) Decimal
	Equal(Decimal) bool
	GreaterThan(Decimal) bool
	LessThan(Decimal) bool
	Float64() float64
	String() string
	Round() Decimal
	IntPart() int64
}

type DecimalFactory 

type DecimalFactory interface {
	Zero() Decimal
	NewFromInt64(int64) Decimal
}

type DecimalValue 

type DecimalValue struct {
	// Decimal value.
	Decimal Decimal
	// Valid is ture when Decimal is defined.
	Valid bool
}

DecimalValue represents a decimal value that can be undefined, in which case Valid is set to false.

type Direction 

type Direction int
const (
	DirectionVertical   Direction = tview.FlexRow
	DirectionHorizontal Direction = tview.FlexColumn
)

type Flex 

type Flex struct {
	*tview.Flex
	// contains filtered or unexported fields
}

Flex is a wrapper around tview.Flex that allows easy keyboard navigation.

func NewFlex 

func NewFlex() *Flex

func (*Flex) Bindings 

func (f *Flex) Bindings() *FlexBindings

func (*Flex) Direction 

func (f *Flex) Direction() Direction

func (*Flex) Focus 

func (b *Flex) Focus(setFocus func(p tview.Primitive))

func (*Flex) FocusedItem 

func (f *Flex) FocusedItem() (i int, count int, item tview.Primitive)

func (*Flex) InputHandler 

func (b *Flex) InputHandler() func(event *tcell.EventKey, setFocus func(p tview.Primitive))

func (*Flex) SetBindings 

func (f *Flex) SetBindings(bindings *FlexBindings)

func (*Flex) SetDirection 

func (f *Flex) SetDirection(direction Direction)

type FlexBindings 

type FlexBindings struct {
	FocusLeft  tcell.Key
	FocusDown  tcell.Key
	FocusUp    tcell.Key
	FocusRight tcell.Key
}

type Float 

type Float float64

Float is an implemnetation of Decimal that uses float64.

func (Float) Add 

func (f Float) Add(other Decimal) Decimal

func (Float) Div 

func (f Float) Div(other Decimal) Decimal

func (Float) Equal 

func (f Float) Equal(other Decimal) bool

func (Float) Float64 

func (f Float) Float64() float64

func (Float) GreaterThan 

func (f Float) GreaterThan(other Decimal) bool

func (Float) IntPart 

func (f Float) IntPart() int64

func (Float) IsZero 

func (f Float) IsZero() bool

func (Float) LessThan 

func (f Float) LessThan(other Decimal) bool

func (Float) Mul 

func (f Float) Mul(other Decimal) Decimal

func (Float) Round 

func (f Float) Round() Decimal

func (Float) String 

func (f Float) String() string

func (Float) Sub 

func (f Float) Sub(other Decimal) Decimal

type FloatFactory 

type FloatFactory struct{}

func (FloatFactory) NewFromInt64 

func (f FloatFactory) NewFromInt64(i int64) Decimal

func (FloatFactory) Zero 

func (f FloatFactory) Zero() Decimal

type Focus 

type Focus int
const (
	FocusLeft Focus = iota
	FocusDown
	FocusUp
	FocusRight
)

type OHLC 

type OHLC struct {
	Timestamp  time.Time
	O, H, L, C Decimal
	V          Decimal
}

OHLC represents an OHLC item with a timestamp.

type OHLCCandles 

type OHLCCandles struct {
	*tview.Box
	// contains filtered or unexported fields
}

func NewOHLCCandles 

func NewOHLCCandles(factory DecimalFactory) *OHLCCandles

func (*OHLCCandles) Draw 

func (o *OHLCCandles) Draw(screen tcell.Screen)

func (*OHLCCandles) NegativeStyle 

func (o *OHLCCandles) NegativeStyle() tcell.Style

func (*OHLCCandles) PositiveStyle 

func (o *OHLCCandles) PositiveStyle() tcell.Style

func (*OHLCCandles) Runes 

func (o *OHLCCandles) Runes() OHLCRunes

Runes returns the current set of runes used to plot the chart.

func (*OHLCCandles) Scale 

func (o *OHLCCandles) Scale() Scale

func (*OHLCCandles) SetData 

func (o *OHLCCandles) SetData(data []OHLC)

func (*OHLCCandles) SetNegativeStyle 

func (o *OHLCCandles) SetNegativeStyle(negativeStyle tcell.Style)

func (*OHLCCandles) SetPositiveStyle 

func (o *OHLCCandles) SetPositiveStyle(positiveStyle tcell.Style)

func (*OHLCCandles) SetRunes 

func (o *OHLCCandles) SetRunes(runes OHLCRunes)

SetRunes sets the runes used to plot the chart.

func (*OHLCCandles) SetScale 

func (o *OHLCCandles) SetScale(scale Scale)

func (*OHLCCandles) SetSpacing 

func (o *OHLCCandles) SetSpacing(spacing int)

func (*OHLCCandles) Spacing 

func (o *OHLCCandles) Spacing() int

type OHLCChart 

type OHLCChart struct {
	*tview.Box
	// contains filtered or unexported fields
}

OHLCChart is a Box component that can render OHLCChart data.

func NewOHLCChart 

func NewOHLCChart(factory DecimalFactory) *OHLCChart

NewOHLCChart creates a new instance of the OHLC component.

func (*OHLCChart) AddOffset 

func (o *OHLCChart) AddOffset(delta int)

func (*OHLCChart) AddSpacing 

func (o *OHLCChart) AddSpacing(delta int)

func (*OHLCChart) Draw 

func (o *OHLCChart) Draw(screen tcell.Screen)

Draw implements tview.Primitive.

func (*OHLCChart) InputHandler 

func (o *OHLCChart) InputHandler() func(event *tcell.EventKey, setFocus func(p tview.Primitive))

MouseHandler implements tview.Primitive.

func (*OHLCChart) Items 

func (o *OHLCChart) Items() []OHLC

Items returns the current OHLC data.

func (*OHLCChart) Logger 

func (o *OHLCChart) Logger() io.Writer

Logger returns the current logger set. Used for debugging.

func (*OHLCChart) MouseHandler 

func (o *OHLCChart) MouseHandler() func(action tview.MouseAction, event *tcell.EventMouse, setFocus func(p tview.Primitive)) (consumed bool, capture tview.Primitive)

MouseHandler implements tview.Primitive.

func (*OHLCChart) NegativeStyle 

func (o *OHLCChart) NegativeStyle() tcell.Style

func (*OHLCChart) OHLCAxisStyle 

func (o *OHLCChart) OHLCAxisStyle() tcell.Style

func (*OHLCChart) OHLCCandlesRunes 

func (o *OHLCChart) OHLCCandlesRunes() OHLCRunes

func (*OHLCChart) Offset 

func (o *OHLCChart) Offset() int

Offset returns the current offset.

func (*OHLCChart) PositiveStyle 

func (o *OHLCChart) PositiveStyle() tcell.Style

func (*OHLCChart) SetItems 

func (o *OHLCChart) SetItems(items []OHLC)

SetItems sets the OHLC data.

func (*OHLCChart) SetLogger 

func (o *OHLCChart) SetLogger(w io.Writer)

SetLogger sets the logger for debugging.

func (*OHLCChart) SetNegativeStyle 

func (o *OHLCChart) SetNegativeStyle(negativeStyle tcell.Style)

func (*OHLCChart) SetOHLCAxisStyle 

func (o *OHLCChart) SetOHLCAxisStyle(style tcell.Style)

func (*OHLCChart) SetOHLCCandlesRunes 

func (o *OHLCChart) SetOHLCCandlesRunes(runes OHLCRunes)

func (*OHLCChart) SetOffset 

func (o *OHLCChart) SetOffset(offset int)

SetOffset sets the scroll offset for OHLC data. It ensures it's always less than the size of the items and is never negative.

func (*OHLCChart) SetPositiveStyle 

func (o *OHLCChart) SetPositiveStyle(positiveStyle tcell.Style)

func (*OHLCChart) SetSpacing 

func (o *OHLCChart) SetSpacing(spacing int)

SetSpacing sets the chart spacing.

func (*OHLCChart) SetVolumeAxisStyle 

func (o *OHLCChart) SetVolumeAxisStyle(style tcell.Style)

func (*OHLCChart) SetVolumeBarsRunes 

func (o *OHLCChart) SetVolumeBarsRunes(runes []rune)

func (*OHLCChart) SetVolumeBarsStyle 

func (o *OHLCChart) SetVolumeBarsStyle(style tcell.Style)

func (*OHLCChart) SetVolumeHeight 

func (o *OHLCChart) SetVolumeHeight(fraction float64)

func (*OHLCChart) Spacing 

func (o *OHLCChart) Spacing() int

Spacing returns the current spacing.

func (*OHLCChart) VolumeAxisStyle 

func (o *OHLCChart) VolumeAxisStyle() tcell.Style

func (*OHLCChart) VolumeBarsRunes 

func (o *OHLCChart) VolumeBarsRunes() []rune

func (*OHLCChart) VolumeBarsStyle 

func (o *OHLCChart) VolumeBarsStyle() tcell.Style

type OHLCRunes 

type OHLCRunes struct {
	Same          rune
	HighOpenClose rune
	LowOpenClose  rune
	HighOpen      rune
	LowClose      rune
	High          rune
	Low           rune
	OpenClose     rune
	Open          rune
	Close         rune
	Thick         rune
	Thin          rune
}

OHLCRunes contains definitions for each OHLC drawing.

type Position 

type Position int
const (
	Right Position = iota
	Left
)

type Primitive 

type Primitive interface {
	// SetRect is the tview.Primitive.SetRect method.
	SetRect(x, y, w, h int)
	// SetRect is the tview.Primitive.Draw method.
	Draw(screen tcell.Screen)
	// SetScale sets the scale to the Primitive.
	SetScale(Scale)
	// Scale returns the current scale used by the Primitive.
	Scale() Scale
}

Primitive is a tview.Primitive that can set and retrieve a Scale.

type Range 

type Range struct {
	Min Decimal
	Max Decimal
	// contains filtered or unexported fields
}

func NewRange 

func NewRange(factory DecimalFactory) Range

func (Range) Feed 

func (r Range) Feed(value Decimal) Range

func (Range) IsSet 

func (r Range) IsSet() bool

type Scale 

type Scale interface {
	Copy() Scale
	// Size returns the current size.
	Size() int
	// SetSize sets the size.
	SetSize(int)
	// SetRange sets the range of the values.
	SetRange(Range)
	// Range returns the current range.
	Range() Range
	// NumDecimals returns the number of decimals
	// needed to draw the axis.
	NumDecimals() int
	// Value returns the place on scale.
	Value(Decimal) int
	// Reverse returns the min value for the place on
	// scale.
	Reverse(int) Decimal
}

Scale describes a component that can scale decimal values to terminal grid.

type ScaleLinear 

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

Linear represents a linear scale.

func NewScaleLinear 

func NewScaleLinear(factory DecimalFactory) *ScaleLinear

NewLinear constructs a new linear scale.

func (*ScaleLinear) Copy 

func (a *ScaleLinear) Copy() Scale

func (*ScaleLinear) NumDecimals 

func (a *ScaleLinear) NumDecimals() int

func (*ScaleLinear) Range 

func (a *ScaleLinear) Range() Range

func (*ScaleLinear) Reverse 

func (a *ScaleLinear) Reverse(i int) Decimal

func (*ScaleLinear) SetRange 

func (a *ScaleLinear) SetRange(rng Range)

SetRange sets the scale range.

func (*ScaleLinear) SetSize 

func (a *ScaleLinear) SetSize(size int)

SetSize sets the size.

func (*ScaleLinear) Size 

func (a *ScaleLinear) Size() int

Size returns the scale size.

func (*ScaleLinear) Value 

func (a *ScaleLinear) Value(v Decimal) int

Value returns a scaled value from decimal.

type SliceMethod 

type SliceMethod int

SliceMethod describes the slicing method when the number of items in the slice is too large to be rendered on the screen. 

const (
	// Last means only the last items will be kept in the slice.
	Last SliceMethod = iota
	// First means only the first items will be kept in the slice.
	First
)

type Ticks 

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

func NewTicks 

func NewTicks(factory DecimalFactory) *Ticks

func (Ticks) Data 

func (b Ticks) Data() []Decimal

func (Ticks) DataSlice 

func (b Ticks) DataSlice() []Decimal

DataSlice returns data, but only the items that fit on the screen.

func (*Ticks) Draw 

func (b *Ticks) Draw(screen tcell.Screen)

func (Ticks) Runes 

func (b Ticks) Runes() []rune

func (Ticks) Scale 

func (b Ticks) Scale() Scale

func (Ticks) SetData 

func (b Ticks) SetData(data []Decimal)

func (Ticks) SetRunes 

func (b Ticks) SetRunes(runes []rune)

func (Ticks) SetScale 

func (b Ticks) SetScale(scale Scale)

func (Ticks) SetSliceMethod 

func (b Ticks) SetSliceMethod(method SliceMethod)

func (Ticks) SetSpacing 

func (b Ticks) SetSpacing(spacing int)

func (Ticks) SetStyle 

func (b Ticks) SetStyle(style tcell.Style)

func (Ticks) SliceMethod 

func (b Ticks) SliceMethod() SliceMethod

func (Ticks) Spacing 

func (b Ticks) Spacing() int

func (Ticks) Style 

func (b Ticks) Style() tcell.Style

func (Ticks) Values 

func (b Ticks) Values() []Decimal

type Tile 

type Tile struct {
	*Flex
	// contains filtered or unexported fields
}

Tile is a wrapper around Flex that allows the user to dynamically create and remove splits, and navigate thorugh them, similar to a tiling window manager. See DefaultBlockBindings for default keybindings.

After calling NewTile, the user should call SetFactory.

func NewTile 

func NewTile() *Tile

func (*Tile) Factory 

func (t *Tile) Factory() func() tview.Primitive

func (*Tile) InputHandler 

func (t *Tile) InputHandler() func(event *tcell.EventKey, setFocus func(p tview.Primitive))

func (*Tile) SetBindings 

func (t *Tile) SetBindings(bindings *BlockBindings)

func (*Tile) SetFactory 

func (t *Tile) SetFactory(factory func() tview.Primitive)

Source Files

View all Source files

Directories

Path Synopsis
examples
axis
bars
ohlc
ticks
tile

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