feat: support pie, radar and funnel chart

This commit is contained in:
vicanso 2022-06-16 23:08:20 +08:00
parent 3f24521593
commit 65a1cb11ad
18 changed files with 1987 additions and 85 deletions

505
echarts.go Normal file
View file

@ -0,0 +1,505 @@
// MIT License
// Copyright (c) 2022 Tree Xie
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
// SOFTWARE.
package charts
import (
"bytes"
"encoding/json"
"fmt"
"regexp"
"strconv"
"github.com/wcharczuk/go-chart/v2"
)
func convertToArray(data []byte) []byte {
data = bytes.TrimSpace(data)
if len(data) == 0 {
return nil
}
if data[0] != '[' {
data = []byte("[" + string(data) + "]")
}
return data
}
type EChartsPosition string
func (p *EChartsPosition) UnmarshalJSON(data []byte) error {
if len(data) == 0 {
return nil
}
if regexp.MustCompile(`^\d+`).Match(data) {
data = []byte(fmt.Sprintf(`"%s"`, string(data)))
}
s := (*string)(p)
return json.Unmarshal(data, s)
}
type EChartStyle struct {
Color string `json:"color"`
}
func (es *EChartStyle) ToStyle() chart.Style {
color := parseColor(es.Color)
return chart.Style{
FillColor: color,
FontColor: color,
StrokeColor: color,
}
}
type EChartsSeriesDataValue struct {
values []float64
}
func (value *EChartsSeriesDataValue) UnmarshalJSON(data []byte) error {
data = convertToArray(data)
return json.Unmarshal(data, &value.values)
}
func (value *EChartsSeriesDataValue) First() float64 {
if len(value.values) == 0 {
return 0
}
return value.values[0]
}
func NewEChartsSeriesDataValue(values ...float64) EChartsSeriesDataValue {
return EChartsSeriesDataValue{
values: values,
}
}
type EChartsSeriesData struct {
Value EChartsSeriesDataValue `json:"value"`
Name string `json:"name"`
ItemStyle EChartStyle `json:"itemStyle"`
}
type _EChartsSeriesData EChartsSeriesData
var numericRep = regexp.MustCompile(`^[-+]?[0-9]+(?:\.[0-9]+)?$`)
func (es *EChartsSeriesData) UnmarshalJSON(data []byte) error {
data = bytes.TrimSpace(data)
if len(data) == 0 {
return nil
}
if numericRep.Match(data) {
v, err := strconv.ParseFloat(string(data), 64)
if err != nil {
return err
}
es.Value = EChartsSeriesDataValue{
values: []float64{
v,
},
}
return nil
}
v := _EChartsSeriesData{}
err := json.Unmarshal(data, &v)
if err != nil {
return err
}
es.Name = v.Name
es.Value = v.Value
es.ItemStyle = v.ItemStyle
return nil
}
type EChartsXAxisData struct {
BoundaryGap *bool `json:"boundaryGap"`
SplitNumber int `json:"splitNumber"`
Data []string `json:"data"`
}
type EChartsXAxis struct {
Data []EChartsXAxisData
}
func (ex *EChartsXAxis) UnmarshalJSON(data []byte) error {
data = convertToArray(data)
if len(data) == 0 {
return nil
}
return json.Unmarshal(data, &ex.Data)
}
type EChartsAxisLabel struct {
Formatter string `json:"formatter"`
}
type EChartsYAxisData struct {
Min *float64 `json:"min"`
Max *float64 `json:"max"`
AxisLabel EChartsAxisLabel `json:"axisLabel"`
AxisLine struct {
LineStyle struct {
Color string `json:"color"`
} `json:"lineStyle"`
} `json:"axisLine"`
}
type EChartsYAxis struct {
Data []EChartsYAxisData `json:"data"`
}
func (ey *EChartsYAxis) UnmarshalJSON(data []byte) error {
data = convertToArray(data)
if len(data) == 0 {
return nil
}
return json.Unmarshal(data, &ey.Data)
}
type EChartsPadding struct {
Box chart.Box
}
func (eb *EChartsPadding) UnmarshalJSON(data []byte) error {
data = convertToArray(data)
if len(data) == 0 {
return nil
}
arr := make([]int, 0)
err := json.Unmarshal(data, &arr)
if err != nil {
return err
}
if len(arr) == 0 {
return nil
}
switch len(arr) {
case 1:
eb.Box = chart.Box{
Left: arr[0],
Top: arr[0],
Bottom: arr[0],
Right: arr[0],
}
case 2:
eb.Box = chart.Box{
Top: arr[0],
Bottom: arr[0],
Left: arr[1],
Right: arr[1],
}
default:
result := make([]int, 4)
copy(result, arr)
if len(arr) == 3 {
result[3] = result[1]
}
// 上右下左
eb.Box = chart.Box{
Top: result[0],
Right: result[1],
Bottom: result[2],
Left: result[3],
}
}
return nil
}
type EChartsLabelOption struct {
Show bool `json:"show"`
Distance int `json:"distance"`
Color string `json:"color"`
}
type EChartsLegend struct {
Show *bool `json:"show"`
Data []string `json:"data"`
Align string `json:"align"`
Orient string `json:"orient"`
Padding EChartsPadding `json:"padding"`
Left EChartsPosition `json:"left"`
Top EChartsPosition `json:"top"`
TextStyle EChartsTextStyle `json:"textStyle"`
}
type EChartsMarkData struct {
Type string `json:"type"`
}
type _EChartsMarkData EChartsMarkData
func (emd *EChartsMarkData) UnmarshalJSON(data []byte) error {
data = bytes.TrimSpace(data)
if len(data) == 0 {
return nil
}
data = convertToArray(data)
ds := make([]*_EChartsMarkData, 0)
err := json.Unmarshal(data, &ds)
if err != nil {
return err
}
for _, d := range ds {
if d.Type != "" {
emd.Type = d.Type
}
}
return nil
}
type EChartsMarkPoint struct {
SymbolSize int `json:"symbolSize"`
Data []EChartsMarkData `json:"data"`
}
func (emp *EChartsMarkPoint) ToSeriesMarkPoint() SeriesMarkPoint {
sp := SeriesMarkPoint{
SymbolSize: emp.SymbolSize,
}
if len(emp.Data) == 0 {
return sp
}
data := make([]SeriesMarkData, len(emp.Data))
for index, item := range emp.Data {
data[index].Type = item.Type
}
sp.Data = data
return sp
}
type EChartsMarkLine struct {
Data []EChartsMarkData `json:"data"`
}
func (eml *EChartsMarkLine) ToSeriesMarkLine() SeriesMarkLine {
sl := SeriesMarkLine{}
if len(eml.Data) == 0 {
return sl
}
data := make([]SeriesMarkData, len(eml.Data))
for index, item := range eml.Data {
data[index].Type = item.Type
}
sl.Data = data
return sl
}
type EChartsSeries struct {
Data []EChartsSeriesData `json:"data"`
Name string `json:"name"`
Type string `json:"type"`
Radius string `json:"radius"`
YAxisIndex int `json:"yAxisIndex"`
ItemStyle EChartStyle `json:"itemStyle"`
// label的配置
Label EChartsLabelOption `json:"label"`
MarkPoint EChartsMarkPoint `json:"markPoint"`
MarkLine EChartsMarkLine `json:"markLine"`
Max *float64 `json:"max"`
Min *float64 `json:"min"`
}
type EChartsSeriesList []EChartsSeries
func (esList EChartsSeriesList) ToSeriesList() SeriesList {
seriesList := make(SeriesList, 0, len(esList))
for _, item := range esList {
// 如果是pie则每个子荐生成一个series
if item.Type == ChartTypePie {
for _, dataItem := range item.Data {
seriesList = append(seriesList, Series{
Type: item.Type,
Name: dataItem.Name,
Label: SeriesLabel{
Show: true,
},
Radius: item.Radius,
Data: []SeriesData{
{
Value: dataItem.Value.First(),
},
},
})
}
continue
}
// 如果是radar或funnel
if item.Type == ChartTypeRadar ||
item.Type == ChartTypeFunnel {
for _, dataItem := range item.Data {
seriesList = append(seriesList, Series{
Name: dataItem.Name,
Type: item.Type,
Data: NewSeriesDataFromValues(dataItem.Value.values),
Max: item.Max,
Min: item.Min,
})
}
continue
}
data := make([]SeriesData, len(item.Data))
for j, dataItem := range item.Data {
data[j] = SeriesData{
Value: dataItem.Value.First(),
Style: dataItem.ItemStyle.ToStyle(),
}
}
seriesList = append(seriesList, Series{
Type: item.Type,
Data: data,
AxisIndex: item.YAxisIndex,
Style: item.ItemStyle.ToStyle(),
Label: SeriesLabel{
Color: parseColor(item.Label.Color),
Show: item.Label.Show,
Distance: item.Label.Distance,
},
Name: item.Name,
MarkPoint: item.MarkPoint.ToSeriesMarkPoint(),
MarkLine: item.MarkLine.ToSeriesMarkLine(),
})
}
return seriesList
}
type EChartsTextStyle struct {
Color string `json:"color"`
FontFamily string `json:"fontFamily"`
FontSize float64 `json:"fontSize"`
}
func (et *EChartsTextStyle) ToStyle() chart.Style {
s := chart.Style{
FontSize: et.FontSize,
FontColor: parseColor(et.Color),
}
if et.FontFamily != "" {
s.Font, _ = GetFont(et.FontFamily)
}
return s
}
type EChartsOption struct {
Type string `json:"type"`
Theme string `json:"theme"`
FontFamily string `json:"fontFamily"`
Padding EChartsPadding `json:"padding"`
Box chart.Box `json:"box"`
Width int `json:"width"`
Height int `json:"height"`
Title struct {
Text string `json:"text"`
Subtext string `json:"subtext"`
Left EChartsPosition `json:"left"`
Top EChartsPosition `json:"top"`
TextStyle EChartsTextStyle `json:"textStyle"`
SubtextStyle EChartsTextStyle `json:"subtextStyle"`
} `json:"title"`
XAxis EChartsXAxis `json:"xAxis"`
YAxis EChartsYAxis `json:"yAxis"`
Legend EChartsLegend `json:"legend"`
Radar struct {
Indicator []RadarIndicator `json:"indicator"`
} `json:"radar"`
Series EChartsSeriesList `json:"series"`
Children []EChartsOption `json:"children"`
}
func (eo *EChartsOption) ToOption() ChartOption {
fontFamily := eo.FontFamily
if len(fontFamily) == 0 {
fontFamily = eo.Title.TextStyle.FontFamily
}
titleTextStyle := eo.Title.TextStyle.ToStyle()
titleSubtextStyle := eo.Title.SubtextStyle.ToStyle()
legendTextStyle := eo.Legend.TextStyle.ToStyle()
o := ChartOption{
Type: eo.Type,
FontFamily: fontFamily,
Theme: eo.Theme,
Title: TitleOption{
Text: eo.Title.Text,
Subtext: eo.Title.Subtext,
FontColor: titleTextStyle.FontColor,
FontSize: titleTextStyle.FontSize,
SubtextFontSize: titleSubtextStyle.FontSize,
SubtextFontColor: titleSubtextStyle.FontColor,
Left: string(eo.Title.Left),
Top: string(eo.Title.Top),
},
Legend: LegendOption{
Show: eo.Legend.Show,
FontSize: legendTextStyle.FontSize,
FontColor: legendTextStyle.FontColor,
Data: eo.Legend.Data,
Left: string(eo.Legend.Left),
Top: string(eo.Legend.Top),
Align: eo.Legend.Align,
Orient: eo.Legend.Orient,
},
RadarIndicators: eo.Radar.Indicator,
Width: eo.Width,
Height: eo.Height,
Padding: eo.Padding.Box,
Box: eo.Box,
SeriesList: eo.Series.ToSeriesList(),
}
if len(eo.XAxis.Data) != 0 {
xAxisData := eo.XAxis.Data[0]
o.XAxis = XAxisOption{
BoundaryGap: xAxisData.BoundaryGap,
Data: xAxisData.Data,
SplitNumber: xAxisData.SplitNumber,
}
}
yAxisOptions := make([]YAxisOption, len(eo.YAxis.Data))
for index, item := range eo.YAxis.Data {
yAxisOptions[index] = YAxisOption{
Min: item.Min,
Max: item.Max,
Formatter: item.AxisLabel.Formatter,
Color: parseColor(item.AxisLine.LineStyle.Color),
}
}
o.YAxisOptions = yAxisOptions
if len(eo.Children) != 0 {
o.Children = make([]ChartOption, len(eo.Children))
for index, item := range eo.Children {
o.Children[index] = item.ToOption()
}
}
return o
}
func renderEcharts(options, outputType string) ([]byte, error) {
o := EChartsOption{}
err := json.Unmarshal([]byte(options), &o)
if err != nil {
return nil, err
}
opt := o.ToOption()
opt.Type = outputType
d, err := Render(opt)
if err != nil {
return nil, err
}
return d.Bytes()
}
func RenderEChartsToPNG(options string) ([]byte, error) {
return renderEcharts(options, "png")
}
func RenderEChartsToSVG(options string) ([]byte, error) {
return renderEcharts(options, "svg")
}