ghtml

package
v0.0.0-...-2bcc11b Latest Latest
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 Go to latest Published: May 8, 2024 License: GPL-3.0 Imports: 11 Imported by: 0

Documentation

Index

Constants

This section is empty.

Variables

This section is empty.

Functions

func NewDocFromHtmlSrc 

func NewDocFromHtmlSrc(htmlSrc *string) (*goquery.Document, error)

func ServeChart 

func ServeChart(listen string, tpl ChartTemplate)

TODO: implement 要求光标同步

Types

type Bar 

type Bar struct {
	Name   string              // 值名称，光标放在绘图区时在绘图区上沿要显示值名称和值
	Data   []gnum.ElegantFloat // 数据
	Colors []gcolor.Color      // 每根bar的颜色
}

柱状图

type CandleStick 

type CandleStick struct {
	Name          string                 // 值名称，光标放在绘图区时在绘图区上沿要显示值名称和值
	Ohlc          [4][]gnum.ElegantFloat // O,H,L,C
	DownColor     gcolor.Color           // 阴线样式，支持背景颜色
	UpColor       gcolor.Color           // 阳线样式，支持背景颜色
	Tips          []Tip                  // 文字注释
	Rects         []Rect                 // 矩形色块
	StraightLines []StraightLine         // 直线，比如压力位、之字形折线、趋势线
}

蜡烛图

type ChartLines 

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

func NewChartLines 

func NewChartLines() *ChartLines

func (*ChartLines) Clone 

func (cl *ChartLines) Clone() *ChartLines

func (*ChartLines) JSONAutoDetect 

func (cl *ChartLines) JSONAutoDetect() ([]byte, error)

func (*ChartLines) JSONTimes 

func (cl *ChartLines) JSONTimes() []gtime.ElegantTime

func (*ChartLines) LineMode 

func (cl *ChartLines) LineMode() *ClLineMode

func (*ChartLines) LinesMode 

func (cl *ChartLines) LinesMode() *ClLinesMode

func (*ChartLines) OclhMode 

func (cl *ChartLines) OclhMode() *ClOclhMode

func (*ChartLines) SetHumanReadPrec 

func (cl *ChartLines) SetHumanReadPrec(hrp int)

func (*ChartLines) SetTimeLayout 

func (cl *ChartLines) SetTimeLayout(layout string)

func (*ChartLines) Times 

func (cl *ChartLines) Times() []time.Time

type ChartTemplate 

type ChartTemplate struct {
	Title   string              // 整个图表的大标题
	Times   []gtime.ElegantTime // 时间轴
	Series  []Series            // 所有子图表
	Heights []int               // 比如有4个Series，那么就用[60,10,10,20]表示每个Series的显示百分比
}

一个绘图模板，包含了整个页面需要的数据，包括一个共享的时间轴和多个绘图区域，多种数据显示样式

type ClLineMode 

type ClLineMode ChartLines

func (*ClLineMode) Set 

func (cl *ClLineMode) Set(lineName string, times []time.Time, values []float64)

type ClLinesMode 

type ClLinesMode ChartLines

func (*ClLinesMode) Append 

func (cl *ClLinesMode) Append(lineName string, times []time.Time, values []float64)

type ClOclhMode 

type ClOclhMode ChartLines

func (*ClOclhMode) Append 

func (cl *ClOclhMode) Append(name string, vals []float64) error

func (*ClOclhMode) GetLine 

func (cl *ClOclhMode) GetLine(i int) []float64

func (*ClOclhMode) Init 

func (cl *ClOclhMode) Init(OCLHName string, times []time.Time, OCLHs [][4]float64)

type Line 

type Line struct {
	Name  string               // 值名称，光标放在绘图区时在绘图区上沿要显示值名称和值
	Data  []*gnum.ElegantFloat // 数据，空指针表示不画点，在eCharts输入数据中就是null
	Color gcolor.Color         // 样式，支持背景颜色
}

散点连线

type Node 

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

html node

func NewFromString 

func NewFromString(s string) (*Node, error)

build node from HTML string

func (*Node) Attr 

func (n *Node) Attr(attrKey string) string

get attribute value by key

func (*Node) Parent 

func (n *Node) Parent() *Node

get father node

func (*Node) Query 

func (n *Node) Query(xpathExpr string) *Nodes

query with xpath expr

func (*Node) QueryByElementAndFullAttrVal 

func (n *Node) QueryByElementAndFullAttrVal(element, attrKey, fullAttrVal string) *Nodes

query nodes by element + attribute key + attribute full value

func (*Node) QueryByElementAndPartAttrVal 

func (n *Node) QueryByElementAndPartAttrVal(element, attrKey, partAttrVal string) *Nodes

query nodes by element + attribute key + attribute part value

func (*Node) Text 

func (n *Node) Text() string

get text of node

type NodeEachCallback 

type NodeEachCallback func(i int, n *Node)

callback function of Each()

type Nodes 

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

nodes list with it's own methods

func (*Nodes) Attrs 

func (ns *Nodes) Attrs(attrKey string) []string

get attribute values of all nodes by attribute key

func (*Nodes) Each 

func (ns *Nodes) Each(cb NodeEachCallback)

loop through all members

func (*Nodes) First 

func (ns *Nodes) First() *Node

get first node, return nil if index not exist

func (*Nodes) Get 

func (ns *Nodes) Get(i int) *Node

get by index, return nil if index not exist

func (*Nodes) Last 

func (ns *Nodes) Last() *Node

get last node, return nil if index not exist

func (*Nodes) Len 

func (ns *Nodes) Len() int

get length

func (*Nodes) Texts 

func (ns *Nodes) Texts() []string

get texts of all nodes

type Rect 

type Rect struct {
	X1    string       // 矩形第一个点的X坐标，即时间
	Y1    gnum.Decimal // 矩形第一个点的Y坐标
	X2    string       // 矩形第二个点的X坐标，即时间
	Y2    gnum.Decimal // 矩形第二个点的Y坐标
	Color gcolor.Color // 样式，默认半透明的
}

矩形色块

type Series 

type Series struct {
	Name        string       // 绘图区左上角显示的名字，比如"601398（工商银行）"
	CandleStick *CandleStick // 时间轴线条类型1：蜡烛图, 每个Series最多一个蜡烛图
	BarStick    *Bar         // 时间轴线条类型2：柱状图, 每个Series最多一个柱状图
	Lines       []Line       // 时间轴线条类型3：曲线图或者折线图
}

一个绘图区域，CandleStick和Bar不可以同时绘制，Lines可以有多个

type StraightLine 

type StraightLine struct {
	X1    string       // 直线第一个点的X坐标，即时间
	Y1    gnum.Decimal // 直线第一个点的Y坐标
	X2    string       // 直线第二个点的X坐标
	Y2    gnum.Decimal // 直线第二个点的Y坐标
	Color gcolor.Color // 样式
}

直线

type Tip 

type Tip struct {
	X     string       // X坐标，即时间
	Y     float64      // Y坐标
	Text  string       // 内容
	Color gcolor.Color // 样式
}

一个点+文字注释

type XAxisSync 

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

func NewXAxisSync 

func NewXAxisSync() *XAxisSync

func (*XAxisSync) AddFloats 

func (s *XAxisSync) AddFloats(name string, times []time.Time, vals []float64) error

func (*XAxisSync) GetFloatValuesPanic 

func (s *XAxisSync) GetFloatValuesPanic(name string) []*float64

func (*XAxisSync) GetNames 

func (s *XAxisSync) GetNames() []string

func (*XAxisSync) GetTimes 

func (s *XAxisSync) GetTimes() []time.Time

func (*XAxisSync) GetValues 

func (s *XAxisSync) GetValues(name string) []interface{}

returns []*float / []*KDot

func (*XAxisSync) Sync 

func (s *XAxisSync) Sync()

Source Files

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