update URL in examples

fix: Label position of the pie chart

.github/workflows/test.yml

@@ -14,13 +14,12 @@ jobs:
     strategy:
       matrix:
         go:
+        - '1.22'
+        - '1.21'
+        - '1.20'
         - '1.19'
         - '1.18'
         - '1.17'
-        - '1.16'
-        - '1.15'
-        - '1.14'
-        - '1.13'
     steps:
 
     - name: Go ${{ matrix.go }} test 

README.md

@@ -1,5 +1,7 @@
 # go-charts
 
+Clone from https://github.com/vicanso/go-charts
+
 [![license](https://img.shields.io/badge/license-MIT-blue.svg)](https://github.com/vicanso/go-charts/blob/master/LICENSE)
 [![Build Status](https://github.com/vicanso/go-charts/workflows/Test/badge.svg)](https://github.com/vicanso/go-charts/actions)
 
@@ -33,7 +35,7 @@ More examples can be found in the [./examples/](./examples/) directory.
 package main
 
 import (
-	charts "github.com/vicanso/go-charts/v2"
+	charts "git.smarteching.com/zeni/go-charts/v2"
 )
 
 func main() {
@@ -99,7 +101,7 @@ func main() {
 package main
 
 import (
-	"github.com/vicanso/go-charts/v2"
+	"git.smarteching.com/zeni/go-charts/v2"
 )
 
 func main() {
@@ -174,7 +176,7 @@ func main() {
 package main
 
 import (
-	"github.com/vicanso/go-charts/v2"
+	"git.smarteching.com/zeni/go-charts/v2"
 )
 
 func main() {
@@ -231,7 +233,7 @@ func main() {
 package main
 
 import (
-	"github.com/vicanso/go-charts/v2"
+	"git.smarteching.com/zeni/go-charts/v2"
 )
 
 func main() {
@@ -286,7 +288,7 @@ func main() {
 package main
 
 import (
-	"github.com/vicanso/go-charts/v2"
+	"git.smarteching.com/zeni/go-charts/v2"
 )
 
 func main() {
@@ -344,7 +346,7 @@ func main() {
 package main
 
 import (
-	"github.com/vicanso/go-charts/v2"
+	"git.smarteching.com/zeni/go-charts/v2"
 )
 
 func main() {
@@ -384,7 +386,7 @@ func main() {
 package main
 
 import (
-	"github.com/vicanso/go-charts/v2"
+	"git.smarteching.com/zeni/go-charts/v2"
 )
 
 func main() {
@@ -449,7 +451,7 @@ func main() {
 package main
 
 import (
-	"github.com/vicanso/go-charts/v2"
+	"git.smarteching.com/zeni/go-charts/v2"
 )
 
 func main() {

README_zh.md

@@ -32,7 +32,7 @@
 package main
 
 import (
-	charts "github.com/vicanso/go-charts/v2"
+	charts "git.smarteching.com/zeni/go-charts/v2"
 )
 
 func main() {
@@ -98,7 +98,7 @@ func main() {
 package main
 
 import (
-	"github.com/vicanso/go-charts/v2"
+	"git.smarteching.com/zeni/go-charts/v2"
 )
 
 func main() {
@@ -173,7 +173,7 @@ func main() {
 package main
 
 import (
-	"github.com/vicanso/go-charts/v2"
+	"git.smarteching.com/zeni/go-charts/v2"
 )
 
 func main() {
@@ -230,7 +230,7 @@ func main() {
 package main
 
 import (
-	"github.com/vicanso/go-charts/v2"
+	"git.smarteching.com/zeni/go-charts/v2"
 )
 
 func main() {
@@ -285,7 +285,7 @@ func main() {
 package main
 
 import (
-	"github.com/vicanso/go-charts/v2"
+	"git.smarteching.com/zeni/go-charts/v2"
 )
 
 func main() {
@@ -343,7 +343,7 @@ func main() {
 package main
 
 import (
-	"github.com/vicanso/go-charts/v2"
+	"git.smarteching.com/zeni/go-charts/v2"
 )
 
 func main() {
@@ -383,7 +383,7 @@ func main() {
 package main
 
 import (
-	"github.com/vicanso/go-charts/v2"
+	"git.smarteching.com/zeni/go-charts/v2"
 )
 
 func main() {
@@ -447,7 +447,7 @@ func main() {
 package main
 
 import (
-	"github.com/vicanso/go-charts/v2"
+	"git.smarteching.com/zeni/go-charts/v2"
 )
 
 func main() {

alias.go

@@ -23,8 +23,8 @@
 package charts
 
 import (
-	"github.com/wcharczuk/go-chart/v2"
-	"github.com/wcharczuk/go-chart/v2/drawing"
+	"git.smarteching.com/zeni/go-chart/v2"
+	"git.smarteching.com/zeni/go-chart/v2/drawing"
 )
 
 type Box = chart.Box

axis.go

@@ -26,7 +26,7 @@ import (
 	"strings"
 
 	"github.com/golang/freetype/truetype"
-	"github.com/wcharczuk/go-chart/v2"
+	"git.smarteching.com/zeni/go-chart/v2"
 )
 
 type axisPainter struct {
@@ -63,6 +63,8 @@ type AxisOption struct {
 	StrokeWidth float64
 	// The length of the axis tick
 	TickLength int
+	// The first axis
+	FirstAxis int
 	// The margin value of label
 	LabelMargin int
 	// The font size of label
@@ -75,7 +77,11 @@ type AxisOption struct {
 	SplitLineShow bool
 	// The color of split line
 	SplitLineColor Color
-	Unit           int
+	// The text rotation of label
+	TextRotation float64
+	// The offset of label
+	LabelOffset Box
+	Unit        int
 }
 
 func (a *axisPainter) Render() (Box, error) {
@@ -153,7 +159,15 @@ func (a *axisPainter) Render() (Box, error) {
 	}
 	top.SetDrawingStyle(style).OverrideTextStyle(style)
 
+	isTextRotation := opt.TextRotation != 0
+
+	if isTextRotation {
+		top.SetTextRotation(opt.TextRotation)
+	}
 	textMaxWidth, textMaxHeight := top.MeasureTextMaxWidthHeight(data)
+	if isTextRotation {
+		top.ClearTextRotation()
+	}
 
 	// 增加30px来计算文本展示区域
 	textFillWidth := float64(textMaxWidth + 20)
@@ -243,6 +257,7 @@ func (a *axisPainter) Render() (Box, error) {
 			Length: tickLength,
 			Unit:   unit,
 			Orient: orient,
+			First:  opt.FirstAxis,
 		})
 		p.LineStroke([]Point{
 			{
@@ -261,11 +276,14 @@ func (a *axisPainter) Render() (Box, error) {
 		Top:   labelPaddingTop,
 		Right: labelPaddingRight,
 	})).MultiText(MultiTextOption{
-		Align:    textAlign,
-		TextList: data,
-		Orient:   orient,
-		Unit:     unit,
-		Position: labelPosition,
+		First:        opt.FirstAxis,
+		Align:        textAlign,
+		TextList:     data,
+		Orient:       orient,
+		Unit:         unit,
+		Position:     labelPosition,
+		TextRotation: opt.TextRotation,
+		Offset:       opt.LabelOffset,
 	})
 	// 显示辅助线
 	if opt.SplitLineShow {

axis_test.go

@@ -26,7 +26,7 @@ import (
 	"testing"
 
 	"github.com/stretchr/testify/assert"
-	"github.com/wcharczuk/go-chart/v2/drawing"
+	"git.smarteching.com/zeni/go-chart/v2/drawing"
 )
 
 func TestAxis(t *testing.T) {

bar_chart.go

@@ -23,8 +23,10 @@
 package charts
 
 import (
+	"math"
+
 	"github.com/golang/freetype/truetype"
-	"github.com/wcharczuk/go-chart/v2"
+	"git.smarteching.com/zeni/go-chart/v2"
 )
 
 type barChart struct {
@@ -61,6 +63,8 @@ type BarChartOption struct {
 	// The legend option
 	Legend   LegendOption
 	BarWidth int
+	// Margin of bar
+	BarMargin int
 }
 
 func (b *barChart) render(result *defaultRenderResult, seriesList SeriesList) (Box, error) {
@@ -86,6 +90,9 @@ func (b *barChart) render(result *defaultRenderResult, seriesList SeriesList) (B
 		margin = 5
 		barMargin = 3
 	}
+	if opt.BarMargin > 0 {
+		barMargin = opt.BarMargin
+	}
 	seriesCount := len(seriesList)
 	// 总的宽度-两个margin-(总数-1)的barMargin
 	barWidth := (width - 2*margin - barMargin*(seriesCount-1)) / seriesCount
@@ -140,14 +147,25 @@ func (b *barChart) render(result *defaultRenderResult, seriesList SeriesList) (B
 			}
 			top := barMaxHeight - h
 
-			seriesPainter.OverrideDrawingStyle(Style{
-				FillColor: fillColor,
-			}).Rect(chart.Box{
-				Top:    top,
-				Left:   x,
-				Right:  x + barWidth,
-				Bottom: barMaxHeight - 1,
-			})
+			if series.RoundRadius <= 0 {
+				seriesPainter.OverrideDrawingStyle(Style{
+					FillColor: fillColor,
+				}).Rect(chart.Box{
+					Top:    top,
+					Left:   x,
+					Right:  x + barWidth,
+					Bottom: barMaxHeight - 1,
+				})
+			} else {
+				seriesPainter.OverrideDrawingStyle(Style{
+					FillColor: fillColor,
+				}).RoundedRect(chart.Box{
+					Top:    top,
+					Left:   x,
+					Right:  x + barWidth,
+					Bottom: barMaxHeight - 1,
+				}, series.RoundRadius)
+			}
 			// 用于生成marker point
 			points[j] = Point{
 				// 居中的位置
@@ -164,11 +182,30 @@ func (b *barChart) render(result *defaultRenderResult, seriesList SeriesList) (B
 			if labelPainter == nil {
 				continue
 			}
+			y := barMaxHeight - h
+			radians := float64(0)
+			fontColor := series.Label.Color
+			if series.Label.Position == PositionBottom {
+				y = barMaxHeight
+				radians = -math.Pi / 2
+				if fontColor.IsZero() {
+					if isLightColor(fillColor) {
+						fontColor = defaultLightFontColor
+					} else {
+						fontColor = defaultDarkFontColor
+					}
+				}
+			}
 			labelPainter.Add(LabelValue{
 				Index: index,
 				Value: item.Value,
 				X:     x + barWidth>>1,
-				Y:     barMaxHeight - h,
+				Y:     y,
+				// 旋转
+				Radians:   radians,
+				FontColor: fontColor,
+				Offset:    series.Label.Offset,
+				FontSize:  series.Label.FontSize,
 			})
 		}
 

chart_option.go

@@ -26,7 +26,6 @@ import (
 	"sort"
 
 	"github.com/golang/freetype/truetype"
-	"github.com/wcharczuk/go-chart/v2"
 )
 
 type ChartOption struct {
@@ -68,10 +67,14 @@ type ChartOption struct {
 	LineStrokeWidth float64
 	// The bar with of bar chart
 	BarWidth int
+	// The margin of each bar
+	BarMargin int
 	// The bar height of horizontal bar chart
 	BarHeight int
 	// Fill the area of line chart
 	FillArea bool
+	// background fill (alpha) opacity
+	Opacity uint8
 	// The child charts
 	Children []ChartOption
 	// The value formatter
@@ -270,7 +273,7 @@ func (o *ChartOption) fillDefault() {
 	o.font, _ = GetFont(o.FontFamily)
 
 	if o.font == nil {
-		o.font, _ = chart.GetDefaultFont()
+		o.font, _ = GetDefaultFont()
 	} else {
 		// 如果指定了字体，则设置主题的字体
 		t.SetFont(o.font)
@@ -384,8 +387,11 @@ func TableOptionRender(opt TableChartOption) (*Painter, error) {
 	if opt.Width <= 0 {
 		opt.Width = defaultChartWidth
 	}
+	if opt.FontFamily != "" {
+		opt.Font, _ = GetFont(opt.FontFamily)
+	}
 	if opt.Font == nil {
-		opt.Font, _ = chart.GetDefaultFont()
+		opt.Font, _ = GetDefaultFont()
 	}
 
 	p, err := NewPainter(PainterOptions{

charts.go

@@ -27,7 +27,7 @@ import (
 	"math"
 	"sort"
 
-	"github.com/wcharczuk/go-chart/v2"
+	"git.smarteching.com/zeni/go-chart/v2"
 )
 
 const labelFontSize = 10
@@ -215,7 +215,16 @@ func defaultRender(p *Painter, opt defaultRenderOption) (*defaultRenderResult, e
 			yAxisOption.Data = r.Values()
 		} else {
 			yAxisOption.isCategoryAxis = true
-			opt.XAxis.Data = r.Values()
+			// 由于x轴为value部分，因此计算其label单独处理
+			opt.XAxis.Data = NewRange(AxisRangeOption{
+				Painter: p,
+				Min:     min,
+				Max:     max,
+				// 高度需要减去x轴的高度
+				Size: rangeHeight,
+				// 分隔数量
+				DivideCount: defaultAxisDivideCount,
+			}).Values()
 			opt.XAxis.isValueAxis = true
 		}
 		reverseStringSlice(yAxisOption.Data)
@@ -366,10 +375,11 @@ func Render(opt ChartOption, opts ...OptionFunc) (*Painter, error) {
 	if len(barSeriesList) != 0 {
 		handler.Add(func() error {
 			_, err := NewBarChart(p, BarChartOption{
-				Theme:    opt.theme,
-				Font:     opt.font,
-				XAxis:    opt.XAxis,
-				BarWidth: opt.BarWidth,
+				Theme:     opt.theme,
+				Font:      opt.font,
+				XAxis:     opt.XAxis,
+				BarWidth:  opt.BarWidth,
+				BarMargin: opt.BarMargin,
 			}).render(renderResult, barSeriesList)
 			return err
 		})
@@ -382,6 +392,7 @@ func Render(opt ChartOption, opts ...OptionFunc) (*Painter, error) {
 				Theme:        opt.theme,
 				Font:         opt.font,
 				BarHeight:    opt.BarHeight,
+				BarMargin:    opt.BarMargin,
 				YAxisOptions: opt.YAxisOptions,
 			}).render(renderResult, horizontalBarSeriesList)
 			return err
@@ -409,6 +420,7 @@ func Render(opt ChartOption, opts ...OptionFunc) (*Painter, error) {
 				SymbolShow:  opt.SymbolShow,
 				StrokeWidth: opt.LineStrokeWidth,
 				FillArea:    opt.FillArea,
+				Opacity:     opt.Opacity,
 			}).render(renderResult, lineSeriesList)
 			return err
 		})

charts_test.go

@@ -26,7 +26,7 @@ import (
 	"errors"
 	"testing"
 
-	"github.com/wcharczuk/go-chart/v2"
+	"git.smarteching.com/zeni/go-chart/v2"
 )
 
 func BenchmarkMultiChartPNGRender(b *testing.B) {

echarts.go

@@ -29,7 +29,7 @@ import (
 	"regexp"
 	"strconv"
 
-	"github.com/wcharczuk/go-chart/v2"
+	"git.smarteching.com/zeni/go-chart/v2"
 )
 
 func convertToArray(data []byte) []byte {
@@ -344,6 +344,11 @@ func (esList EChartsSeriesList) ToSeriesList() SeriesList {
 					Data: NewSeriesDataFromValues(dataItem.Value.values),
 					Max:  item.Max,
 					Min:  item.Min,
+					Label: SeriesLabel{
+						Color:    parseColor(item.Label.Color),
+						Show:     item.Label.Show,
+						Distance: item.Label.Distance,
+					},
 				})
 			}
 			continue

examples/area_line_chart/main.go

@@ -1,11 +1,10 @@
 package main
 
 import (
-	"io/ioutil"
 	"os"
 	"path/filepath"
 
-	"github.com/vicanso/go-charts/v2"
+	"git.smarteching.com/zeni/go-charts/v2"
 )
 
 func writeFile(buf []byte) error {
@@ -16,7 +15,7 @@ func writeFile(buf []byte) error {
 	}
 
 	file := filepath.Join(tmpPath, "area-line-chart.png")
-	err = ioutil.WriteFile(file, buf, 0600)
+	err = os.WriteFile(file, buf, 0600)
 	if err != nil {
 		return err
 	}

examples/bar_chart/main.go

@@ -1,11 +1,10 @@
 package main
 
 import (
-	"io/ioutil"
 	"os"
 	"path/filepath"
 
-	"github.com/vicanso/go-charts/v2"
+	"git.smarteching.com/zeni/go-charts/v2"
 )
 
 func writeFile(buf []byte) error {
@@ -16,7 +15,7 @@ func writeFile(buf []byte) error {
 	}
 
 	file := filepath.Join(tmpPath, "bar-chart.png")
-	err = ioutil.WriteFile(file, buf, 0600)
+	err = os.WriteFile(file, buf, 0600)
 	if err != nil {
 		return err
 	}

examples/charts/main.go

@@ -6,7 +6,7 @@ import (
 	"net/http"
 	"strconv"
 
-	charts "github.com/vicanso/go-charts/v2"
+	charts "git.smarteching.com/zeni/go-charts/v2"
 )
 
 var html = `<!DOCTYPE html>
@@ -355,6 +355,10 @@ func indexHandler(w http.ResponseWriter, req *http.Request) {
 							Value: 180,
 						},
 					},
+					Label: charts.SeriesLabel{
+						Show:     true,
+						Position: charts.PositionBottom,
+					},
 				},
 			},
 		},

examples/chinese/main.go

@@ -5,7 +5,7 @@ import (
 	"os"
 	"path/filepath"
 
-	"github.com/vicanso/go-charts/v2"
+	"git.smarteching.com/zeni/go-charts/v2"
 )
 
 func writeFile(buf []byte) error {
@@ -16,7 +16,7 @@ func writeFile(buf []byte) error {
 	}
 
 	file := filepath.Join(tmpPath, "chinese-line-chart.png")
-	err = ioutil.WriteFile(file, buf, 0600)
+	err = os.WriteFile(file, buf, 0600)
 	if err != nil {
 		return err
 	}
@@ -34,6 +34,8 @@ func main() {
 	if err != nil {
 		panic(err)
 	}
+	font, _ := charts.GetFont("noto")
+	charts.SetDefaultFont(font)
 
 	values := [][]float64{
 		{
@@ -85,7 +87,6 @@ func main() {
 	p, err := charts.LineRender(
 		values,
 		charts.TitleTextOptionFunc("测试"),
-		charts.FontFamilyOptionFunc("noto"),
 		charts.XAxisDataOptionFunc([]string{
 			"星期一",
 			"星期二",

examples/funnel_chart/main.go

@@ -1,11 +1,10 @@
 package main
 
 import (
-	"io/ioutil"
 	"os"
 	"path/filepath"
 
-	"github.com/vicanso/go-charts/v2"
+	"git.smarteching.com/zeni/go-charts/v2"
 )
 
 func writeFile(buf []byte) error {
@@ -16,7 +15,7 @@ func writeFile(buf []byte) error {
 	}
 
 	file := filepath.Join(tmpPath, "funnel-chart.png")
-	err = ioutil.WriteFile(file, buf, 0600)
+	err = os.WriteFile(file, buf, 0600)
 	if err != nil {
 		return err
 	}
@@ -30,6 +29,8 @@ func main() {
 		60,
 		40,
 		20,
+		10,
+		0,
 	}
 	p, err := charts.FunnelRender(
 		values,
@@ -40,6 +41,8 @@ func main() {
 			"Visit",
 			"Inquiry",
 			"Order",
+			"Pay",
+			"Cancel",
 		}),
 	)
 	if err != nil {

examples/horizontal_bar_chart/main.go

@@ -1,11 +1,10 @@
 package main
 
 import (
-	"io/ioutil"
 	"os"
 	"path/filepath"
 
-	"github.com/vicanso/go-charts/v2"
+	"git.smarteching.com/zeni/go-charts/v2"
 )
 
 func writeFile(buf []byte) error {
@@ -16,7 +15,7 @@ func writeFile(buf []byte) error {
 	}
 
 	file := filepath.Join(tmpPath, "horizontal-bar-chart.png")
-	err = ioutil.WriteFile(file, buf, 0600)
+	err = os.WriteFile(file, buf, 0600)
 	if err != nil {
 		return err
 	}
@@ -26,22 +25,22 @@ func writeFile(buf []byte) error {
 func main() {
 	values := [][]float64{
 		{
-			8203,
-			18203,
-			23489,
-			29034,
-			104970,
-			131744,
-			630230,
+			10,
+			30,
+			50,
+			70,
+			90,
+			110,
+			130,
 		},
 		{
-			9325,
-			19325,
-			23438,
-			31000,
-			121594,
-			134141,
-			681807,
+			20,
+			40,
+			60,
+			80,
+			100,
+			120,
+			140,
 		},
 	}
 	p, err := charts.HorizontalBarRender(
@@ -66,6 +65,9 @@ func main() {
 			"China",
 			"World",
 		}),
+		func(opt *charts.ChartOption) {
+			opt.SeriesList[0].RoundRadius = 5
+		},
 	)
 	if err != nil {
 		panic(err)

examples/line_chart/main.go

@@ -2,11 +2,10 @@ package main
 
 import (
 	"fmt"
-	"io/ioutil"
 	"os"
 	"path/filepath"
 
-	"github.com/vicanso/go-charts/v2"
+	"git.smarteching.com/zeni/go-charts/v2"
 )
 
 func writeFile(buf []byte) error {
@@ -17,7 +16,7 @@ func writeFile(buf []byte) error {
 	}
 
 	file := filepath.Join(tmpPath, "line-chart.png")
-	err = ioutil.WriteFile(file, buf, 0600)
+	err = os.WriteFile(file, buf, 0600)
 	if err != nil {
 		return err
 	}
@@ -97,6 +96,11 @@ func main() {
 				Top:    5,
 				Bottom: 10,
 			}
+			opt.YAxisOptions = []charts.YAxisOption{
+				{
+					SplitLineShow: charts.FalseFlag(),
+				},
+			}
 			opt.SymbolShow = charts.FalseFlag()
 			opt.LineStrokeWidth = 1
 			opt.ValueFormatter = func(f float64) string {

examples/painter/main.go

@@ -1,12 +1,11 @@
 package main
 
 import (
-	"io/ioutil"
 	"os"
 	"path/filepath"
 
-	charts "github.com/vicanso/go-charts/v2"
-	"github.com/wcharczuk/go-chart/v2/drawing"
+	charts "git.smarteching.com/zeni/go-charts/v2"
+	"git.smarteching.com/zeni/go-chart/v2/drawing"
 )
 
 func writeFile(buf []byte) error {
@@ -17,7 +16,7 @@ func writeFile(buf []byte) error {
 	}
 
 	file := filepath.Join(tmpPath, "painter.png")
-	err = ioutil.WriteFile(file, buf, 0600)
+	err = os.WriteFile(file, buf, 0600)
 	if err != nil {
 		return err
 	}

examples/pie_chart/main.go

@@ -1,11 +1,10 @@
 package main
 
 import (
-	"io/ioutil"
 	"os"
 	"path/filepath"
 
-	"github.com/vicanso/go-charts/v2"
+	"git.smarteching.com/zeni/go-charts/v2"
 )
 
 func writeFile(buf []byte) error {
@@ -16,7 +15,7 @@ func writeFile(buf []byte) error {
 	}
 
 	file := filepath.Join(tmpPath, "pie-chart.png")
-	err = ioutil.WriteFile(file, buf, 0600)
+	err = os.WriteFile(file, buf, 0600)
 	if err != nil {
 		return err
 	}

examples/radar_chart/main.go

@@ -1,11 +1,10 @@
 package main
 
 import (
-	"io/ioutil"
 	"os"
 	"path/filepath"
 
-	"github.com/vicanso/go-charts/v2"
+	"git.smarteching.com/zeni/go-charts/v2"
 )
 
 func writeFile(buf []byte) error {
@@ -16,7 +15,7 @@ func writeFile(buf []byte) error {
 	}
 
 	file := filepath.Join(tmpPath, "radar-chart.png")
-	err = ioutil.WriteFile(file, buf, 0600)
+	err = os.WriteFile(file, buf, 0600)
 	if err != nil {
 		return err
 	}

examples/table/main.go

@@ -1,14 +1,13 @@
 package main
 
 import (
-	"io/ioutil"
 	"os"
 	"path/filepath"
 	"strconv"
 	"strings"
 
-	"github.com/vicanso/go-charts/v2"
-	"github.com/wcharczuk/go-chart/v2/drawing"
+	"git.smarteching.com/zeni/go-charts/v2"
+	"git.smarteching.com/zeni/go-chart/v2/drawing"
 )
 
 func writeFile(buf []byte, filename string) error {
@@ -19,7 +18,7 @@ func writeFile(buf []byte, filename string) error {
 	}
 
 	file := filepath.Join(tmpPath, filename)
-	err = ioutil.WriteFile(file, buf, 0600)
+	err = os.WriteFile(file, buf, 0600)
 	if err != nil {
 		return err
 	}

examples/time_line_chart/main.go

@@ -0,0 +1,81 @@
+package main
+
+import (
+	"crypto/rand"
+	"fmt"
+	"math/big"
+	"os"
+	"path/filepath"
+	"time"
+
+	"git.smarteching.com/zeni/go-charts/v2"
+)
+
+func writeFile(buf []byte) error {
+	tmpPath := "./tmp"
+	err := os.MkdirAll(tmpPath, 0700)
+	if err != nil {
+		return err
+	}
+
+	file := filepath.Join(tmpPath, "time-line-chart.png")
+	err = os.WriteFile(file, buf, 0600)
+	if err != nil {
+		return err
+	}
+	return nil
+}
+
+func main() {
+	xAxisValue := []string{}
+	values := []float64{}
+	now := time.Now()
+	firstAxis := 0
+	for i := 0; i < 300; i++ {
+		// 设置首个axis为xx:00的时间点
+		if firstAxis == 0 && now.Minute() == 0 {
+			firstAxis = i
+		}
+		xAxisValue = append(xAxisValue, now.Format("15:04"))
+		now = now.Add(time.Minute)
+		value, _ := rand.Int(rand.Reader, big.NewInt(100))
+		values = append(values, float64(value.Int64()))
+	}
+	p, err := charts.LineRender(
+		[][]float64{
+			values,
+		},
+		charts.TitleTextOptionFunc("Line"),
+		charts.XAxisDataOptionFunc(xAxisValue, charts.FalseFlag()),
+		charts.LegendLabelsOptionFunc([]string{
+			"Demo",
+		}, "50"),
+		func(opt *charts.ChartOption) {
+			opt.XAxis.FirstAxis = firstAxis
+			// 必须要比计算得来的最小值更大(每60分钟)
+			opt.XAxis.SplitNumber = 60
+			opt.Legend.Padding = charts.Box{
+				Top:    5,
+				Bottom: 10,
+			}
+			opt.SymbolShow = charts.FalseFlag()
+			opt.LineStrokeWidth = 1
+			opt.ValueFormatter = func(f float64) string {
+				return fmt.Sprintf("%.0f", f)
+			}
+		},
+	)
+
+	if err != nil {
+		panic(err)
+	}
+
+	buf, err := p.Bytes()
+	if err != nil {
+		panic(err)
+	}
+	err = writeFile(buf)
+	if err != nil {
+		panic(err)
+	}
+}

font.go

@@ -27,14 +27,18 @@ import (
 	"sync"
 
 	"github.com/golang/freetype/truetype"
-	"github.com/wcharczuk/go-chart/v2/roboto"
+	"git.smarteching.com/zeni/go-chart/v2/roboto"
 )
 
 var fonts = sync.Map{}
 var ErrFontNotExists = errors.New("font is not exists")
+var defaultFontFamily = "defaultFontFamily"
 
 func init() {
-	_ = InstallFont("roboto", roboto.Roboto)
+	name := "roboto"
+	_ = InstallFont(name, roboto.Roboto)
+	font, _ := GetFont(name)
+	SetDefaultFont(font)
 }
 
 // InstallFont installs the font for charts
@@ -47,6 +51,19 @@ func InstallFont(fontFamily string, data []byte) error {
 	return nil
 }
 
+// GetDefaultFont get default font
+func GetDefaultFont() (*truetype.Font, error) {
+	return GetFont(defaultFontFamily)
+}
+
+// SetDefaultFont set default font
+func SetDefaultFont(font *truetype.Font) {
+	if font == nil {
+		return
+	}
+	fonts.Store(defaultFontFamily, font)
+}
+
 // GetFont get the font by font family
 func GetFont(fontFamily string) (*truetype.Font, error) {
 	value, ok := fonts.Load(fontFamily)

font_test.go

@@ -26,7 +26,7 @@ import (
 	"testing"
 
 	"github.com/stretchr/testify/assert"
-	"github.com/wcharczuk/go-chart/v2/roboto"
+	"git.smarteching.com/zeni/go-chart/v2/roboto"
 )
 
 func TestInstallFont(t *testing.T) {

funnel_chart.go

@@ -23,9 +23,6 @@
 package charts
 
 import (
-	"fmt"
-
-	"github.com/dustin/go-humanize"
 	"github.com/golang/freetype/truetype"
 )
 
@@ -95,13 +92,23 @@ func (f *funnelChart) render(result *defaultRenderResult, seriesList SeriesList)
 	y := 0
 	widthList := make([]int, len(seriesList))
 	textList := make([]string, len(seriesList))
+	seriesNames := seriesList.Names()
+	offset := max - min
 	for index, item := range seriesList {
 		value := item.Data[0].Value
-		widthPercent := (value - min) / (max - min)
+		// 最大最小值一致则为100%
+		widthPercent := 100.0
+		if offset != 0 {
+			widthPercent = (value - min) / offset
+		}
 		w := int(widthPercent * float64(width))
 		widthList[index] = w
-		p := humanize.CommafWithDigits(value/max*100, 2) + "%"
-		textList[index] = fmt.Sprintf("%s(%s)", item.Name, p)
+		// 如果最大值为0，则占比100%
+		percent := 1.0
+		if max != 0 {
+			percent = value / max
+		}
+		textList[index] = NewFunnelLabelFormatter(seriesNames, item.Label.Formatter)(index, value, percent)
 	}
 
 	for index, w := range widthList {

go.mod

@@ -1,17 +1,17 @@
-module github.com/vicanso/go-charts/v2
+module git.smarteching.com/zeni/go-charts/v2
 
-go 1.17
+go 1.24.1
 
 require (
-	github.com/dustin/go-humanize v1.0.0
+	git.smarteching.com/zeni/go-chart/v2 v2.1.4
+	github.com/dustin/go-humanize v1.0.1
 	github.com/golang/freetype v0.0.0-20170609003504-e2365dfdc4a0
-	github.com/stretchr/testify v1.8.0
-	github.com/wcharczuk/go-chart/v2 v2.1.0
+	github.com/stretchr/testify v1.10.0
 )
 
 require (
 	github.com/davecgh/go-spew v1.1.1 // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect
-	golang.org/x/image v0.0.0-20220902085622-e7cb96979f69 // indirect
+	golang.org/x/image v0.21.0 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
 )

go.sum

@@ -1,27 +1,18 @@
-github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+git.smarteching.com/zeni/go-chart/v2 v2.1.4 h1:pF06+F6eqJLIG8uMiTVPR5TygPGMjM/FHMzTxmu5V/Q=
+git.smarteching.com/zeni/go-chart/v2 v2.1.4/go.mod h1:b3ueW9h3pGGXyhkormZAvilHaG4+mQti+bMNPdQBeOQ=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
-github.com/dustin/go-humanize v1.0.0 h1:VSnTsYCnlFHaM2/igO1h6X3HA71jcobQuxemgkq4zYo=
-github.com/dustin/go-humanize v1.0.0/go.mod h1:HtrtbFcZ19U5GC7JDqmcUSB87Iq5E25KnS6fMYU6eOk=
+github.com/dustin/go-humanize v1.0.1 h1:GzkhY7T5VNhEkwH0PVJgjz+fX1rhBrR7pRT3mDkpeCY=
+github.com/dustin/go-humanize v1.0.1/go.mod h1:Mu1zIs6XwVuF/gI1OepvI0qD18qycQx+mFykh5fBlto=
 github.com/golang/freetype v0.0.0-20170609003504-e2365dfdc4a0 h1:DACJavvAHhabrF08vX0COfcOBJRhZ8lUbR+ZWIs0Y5g=
 github.com/golang/freetype v0.0.0-20170609003504-e2365dfdc4a0/go.mod h1:E/TSTwGwJL78qG/PmXZO1EjYhfJinVAhrmmHX6Z8B9k=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
-github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
-github.com/stretchr/objx v0.4.0/go.mod h1:YvHI0jy2hoMjB+UWwv71VJQ9isScKT/TqJzVSSt89Yw=
-github.com/stretchr/testify v1.7.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
-github.com/stretchr/testify v1.8.0 h1:pSgiaMZlXftHpm5L7V1+rVB+AZJydKsMxsQBIJw4PKk=
-github.com/stretchr/testify v1.8.0/go.mod h1:yNjHg4UonilssWZ8iaSj1OCr/vHnekPRkoO+kdMU+MU=
-github.com/wcharczuk/go-chart/v2 v2.1.0 h1:tY2slqVQ6bN+yHSnDYwZebLQFkphK4WNrVwnt7CJZ2I=
-github.com/wcharczuk/go-chart/v2 v2.1.0/go.mod h1:yx7MvAVNcP/kN9lKXM/NTce4au4DFN99j6i1OwDclNA=
-golang.org/x/image v0.0.0-20200927104501-e162460cd6b5/go.mod h1:FeLwcggjj3mMvU+oOTbSwawSJRM1uh48EjtB4UJZlP0=
-golang.org/x/image v0.0.0-20220902085622-e7cb96979f69 h1:Lj6HJGCSn5AjxRAH2+r35Mir4icalbqku+CLUtjnvXY=
-golang.org/x/image v0.0.0-20220902085622-e7cb96979f69/go.mod h1:doUCurBvlfPMKfmIpRIywoHmhN3VyhnoFDbvIEWF4hY=
-golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
-golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ=
-golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
+github.com/stretchr/testify v1.10.0 h1:Xv5erBjTwe/5IxqUQTdXv5kgmIvbHo3QQyRwhJsOfJA=
+github.com/stretchr/testify v1.10.0/go.mod h1:r2ic/lqez/lEtzL7wO/rwa5dbSLXVDPFyf8C91i36aY=
+golang.org/x/image v0.21.0 h1:c5qV36ajHpdj4Qi0GnE0jUc/yuo33OLFaa0d+crTD5s=
+golang.org/x/image v0.21.0/go.mod h1:vUbsLavqK/W303ZroQQVKQ+Af3Yl6Uz1Ppu5J/cLz78=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
-gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
 gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

grid_test.go

@@ -26,7 +26,7 @@ import (
 	"testing"
 
 	"github.com/stretchr/testify/assert"
-	"github.com/wcharczuk/go-chart/v2/drawing"
+	"git.smarteching.com/zeni/go-chart/v2/drawing"
 )
 
 func TestGrid(t *testing.T) {

horizontal_bar_chart.go

@@ -24,7 +24,7 @@ package charts
 
 import (
 	"github.com/golang/freetype/truetype"
-	"github.com/wcharczuk/go-chart/v2"
+	"git.smarteching.com/zeni/go-chart/v2"
 )
 
 type horizontalBarChart struct {
@@ -50,6 +50,8 @@ type HorizontalBarChartOption struct {
 	// The legend option
 	Legend    LegendOption
 	BarHeight int
+	// Margin of bar
+	BarMargin int
 }
 
 // NewHorizontalBarChart returns a horizontal bar chart renderer
@@ -81,6 +83,9 @@ func (h *horizontalBarChart) render(result *defaultRenderResult, seriesList Seri
 		margin = 5
 		barMargin = 3
 	}
+	if opt.BarMargin > 0 {
+		barMargin = opt.BarMargin
+	}
 	seriesCount := len(seriesList)
 	// 总的高度-两个margin-(总数-1)的barMargin
 	barHeight := (height - 2*margin - barMargin*(seriesCount-1)) / seriesCount
@@ -99,11 +104,25 @@ func (h *horizontalBarChart) render(result *defaultRenderResult, seriesList Seri
 		DivideCount: defaultAxisDivideCount,
 		Size:        seriesPainter.Width(),
 	})
+	seriesNames := seriesList.Names()
 
+	rendererList := []Renderer{}
 	for index := range seriesList {
 		series := seriesList[index]
 		seriesColor := theme.GetSeriesColor(series.index)
 		divideValues := yRange.AutoDivide()
+
+		var labelPainter *SeriesLabelPainter
+		if series.Label.Show {
+			labelPainter = NewSeriesLabelPainter(SeriesLabelPainterParams{
+				P:           seriesPainter,
+				SeriesNames: seriesNames,
+				Label:       series.Label,
+				Theme:       opt.Theme,
+				Font:        opt.Font,
+			})
+			rendererList = append(rendererList, labelPainter)
+		}
 		for j, item := range series.Data {
 			if j >= yRange.divideCount {
 				continue
@@ -122,16 +141,57 @@ func (h *horizontalBarChart) render(result *defaultRenderResult, seriesList Seri
 				fillColor = item.Style.FillColor
 			}
 			right := w
-			seriesPainter.OverrideDrawingStyle(Style{
-				FillColor: fillColor,
-			}).Rect(chart.Box{
-				Top:    y,
-				Left:   0,
-				Right:  right,
-				Bottom: y + barHeight,
-			})
+			if series.RoundRadius <= 0 {
+				seriesPainter.OverrideDrawingStyle(Style{
+					FillColor: fillColor,
+				}).Rect(chart.Box{
+					Top:    y,
+					Left:   0,
+					Right:  right,
+					Bottom: y + barHeight,
+				})
+			} else {
+				seriesPainter.OverrideDrawingStyle(Style{
+					FillColor: fillColor,
+				}).RoundedRect(chart.Box{
+					Top:    y,
+					Left:   0,
+					Right:  right,
+					Bottom: y + barHeight,
+				}, series.RoundRadius)
+			}
+
+			// 如果label不需要展示，则返回
+			if labelPainter == nil {
+				continue
+			}
+			labelValue := LabelValue{
+				Orient:    OrientHorizontal,
+				Index:     index,
+				Value:     item.Value,
+				X:         right,
+				Y:         y + barHeight>>1,
+				Offset:    series.Label.Offset,
+				FontColor: series.Label.Color,
+				FontSize:  series.Label.FontSize,
+			}
+			if series.Label.Position == PositionLeft {
+				labelValue.X = 0
+				if labelValue.FontColor.IsZero() {
+					if isLightColor(fillColor) {
+						labelValue.FontColor = defaultLightFontColor
+					} else {
+						labelValue.FontColor = defaultDarkFontColor
+					}
+				}
+			}
+			labelPainter.Add(labelValue)
 		}
 	}
+	err := doRender(rendererList...)
+	if err != nil {
+		return BoxZero, err
+	}
 	return p.box, nil
 }
 

line_chart.go

@@ -26,7 +26,7 @@ import (
 	"math"
 
 	"github.com/golang/freetype/truetype"
-	"github.com/wcharczuk/go-chart/v2/drawing"
+	"git.smarteching.com/zeni/go-chart/v2/drawing"
 )
 
 type lineChart struct {
@@ -70,6 +70,8 @@ type LineChartOption struct {
 	FillArea bool
 	// background is filled
 	backgroundIsFilled bool
+	// background fill (alpha) opacity
+	Opacity uint8
 }
 
 func (l *lineChart) render(result *defaultRenderResult, seriesList SeriesList) (Box, error) {
@@ -113,6 +115,9 @@ func (l *lineChart) render(result *defaultRenderResult, seriesList SeriesList) (
 			StrokeColor: seriesColor,
 			StrokeWidth: strokeWidth,
 		}
+		if len(series.Style.StrokeDashArray) > 0 {
+			drawingStyle.StrokeDashArray = series.Style.StrokeDashArray
+		}
 
 		yRange := result.axisRanges[series.AxisIndex]
 		points := make([]Point, 0)
@@ -147,6 +152,8 @@ func (l *lineChart) render(result *defaultRenderResult, seriesList SeriesList) (
 				Value: item.Value,
 				X:     p.X,
 				Y:     p.Y,
+				// 字体大小
+				FontSize: series.Label.FontSize,
 			})
 		}
 		// 如果需要填充区域
@@ -154,6 +161,10 @@ func (l *lineChart) render(result *defaultRenderResult, seriesList SeriesList) (
 			areaPoints := make([]Point, len(points))
 			copy(areaPoints, points)
 			bottomY := yRange.getRestHeight(yRange.min)
+			var opacity uint8 = 200
+			if opt.Opacity != 0 {
+				opacity = opt.Opacity
+			}
 			areaPoints = append(areaPoints, Point{
 				X: areaPoints[len(areaPoints)-1].X,
 				Y: bottomY,
@@ -162,7 +173,7 @@ func (l *lineChart) render(result *defaultRenderResult, seriesList SeriesList) (
 				Y: bottomY,
 			}, areaPoints[0])
 			seriesPainter.SetDrawingStyle(Style{
-				FillColor: seriesColor.WithAlpha(200),
+				FillColor: seriesColor.WithAlpha(opacity),
 			})
 			seriesPainter.FillArea(areaPoints)
 		}

mark_line.go

@@ -24,7 +24,6 @@ package charts
 
 import (
 	"github.com/golang/freetype/truetype"
-	"github.com/wcharczuk/go-chart/v2"
 )
 
 // NewMarkLine returns a series mark line
@@ -75,7 +74,7 @@ func (m *markLinePainter) Render() (Box, error) {
 		}
 		font := opt.Font
 		if font == nil {
-			font, _ = chart.GetDefaultFont()
+			font, _ = GetDefaultFont()
 		}
 		summary := s.Summary()
 		for _, markLine := range s.MarkLine.Data {

mark_line_test.go

@@ -26,7 +26,7 @@ import (
 	"testing"
 
 	"github.com/stretchr/testify/assert"
-	"github.com/wcharczuk/go-chart/v2/drawing"
+	"git.smarteching.com/zeni/go-chart/v2/drawing"
 )
 
 func TestMarkLine(t *testing.T) {

mark_point.go

@@ -24,7 +24,6 @@ package charts
 
 import (
 	"github.com/golang/freetype/truetype"
-	"github.com/wcharczuk/go-chart/v2/drawing"
 )
 
 // NewMarkPoint returns a series mark point
@@ -78,16 +77,15 @@ func (m *markPointPainter) Render() (Box, error) {
 			symbolSize = 30
 		}
 		textStyle := Style{
-			FontColor: drawing.Color{
-				R: 238,
-				G: 238,
-				B: 238,
-				A: 255,
-			},
 			FontSize:    labelFontSize,
 			StrokeWidth: 1,
 			Font:        opt.Font,
 		}
+		if isLightColor(opt.FillColor) {
+			textStyle.FontColor = defaultLightFontColor
+		} else {
+			textStyle.FontColor = defaultDarkFontColor
+		}
 		painter.OverrideDrawingStyle(Style{
 			FillColor: opt.FillColor,
 		}).OverrideTextStyle(textStyle)

mark_point_test.go

@@ -26,7 +26,7 @@ import (
 	"testing"
 
 	"github.com/stretchr/testify/assert"
-	"github.com/wcharczuk/go-chart/v2/drawing"
+	"git.smarteching.com/zeni/go-chart/v2/drawing"
 )
 
 func TestMarkPoint(t *testing.T) {

painter.go

@@ -28,7 +28,7 @@ import (
 	"math"
 
 	"github.com/golang/freetype/truetype"
-	"github.com/wcharczuk/go-chart/v2"
+	"git.smarteching.com/zeni/go-chart/v2"
 )
 
 type ValueFormatter func(float64) string
@@ -59,6 +59,8 @@ type PainterOptions struct {
 type PainterOption func(*Painter)
 
 type TicksOption struct {
+	// the first tick
+	First  int
 	Length int
 	Orient string
 	Count  int
@@ -71,6 +73,11 @@ type MultiTextOption struct {
 	Unit     int
 	Position string
 	Align    string
+	// The text rotation of label
+	TextRotation float64
+	Offset       Box
+	// The first text index
+	First int
 }
 
 type GridOption struct {
@@ -149,7 +156,7 @@ func NewPainter(opts PainterOptions, opt ...PainterOption) (*Painter, error) {
 	}
 	font := opts.Font
 	if font == nil {
-		f, err := chart.GetDefaultFont()
+		f, err := GetDefaultFont()
 		if err != nil {
 			return nil, err
 		}
@@ -558,6 +565,19 @@ func (p *Painter) Text(body string, x, y int) *Painter {
 	return p
 }
 
+func (p *Painter) TextRotation(body string, x, y int, radians float64) {
+	p.render.SetTextRotation(radians)
+	p.render.Text(body, x+p.box.Left, y+p.box.Top)
+	p.render.ClearTextRotation()
+}
+
+func (p *Painter) SetTextRotation(radians float64) {
+	p.render.SetTextRotation(radians)
+}
+func (p *Painter) ClearTextRotation() {
+	p.render.ClearTextRotation()
+}
+
 func (p *Painter) TextFit(body string, x, y, width int, textAligns ...string) chart.Box {
 	style := p.style
 	textWarp := style.TextWrap
@@ -600,6 +620,7 @@ func (p *Painter) Ticks(opt TicksOption) *Painter {
 		return p
 	}
 	count := opt.Count
+	first := opt.First
 	width := p.Width()
 	height := p.Height()
 	unit := 1
@@ -614,7 +635,10 @@ func (p *Painter) Ticks(opt TicksOption) *Painter {
 		values = autoDivide(width, count)
 	}
 	for index, value := range values {
-		if index%unit != 0 {
+		if index < first {
+			continue
+		}
+		if (index-first)%unit != 0 {
 			continue
 		}
 		if isVertical {
@@ -669,10 +693,19 @@ func (p *Painter) MultiText(opt MultiTextOption) *Painter {
 	} else {
 		values = autoDivide(width, count)
 	}
+	isTextRotation := opt.TextRotation != 0
+	offset := opt.Offset
 	for index, text := range opt.TextList {
-		if opt.Unit != 0 && index%opt.Unit != showIndex {
+		if index < opt.First {
 			continue
 		}
+		if opt.Unit != 0 && (index-opt.First)%opt.Unit != showIndex {
+			continue
+		}
+		if isTextRotation {
+			p.ClearTextRotation()
+			p.SetTextRotation(opt.TextRotation)
+		}
 		box := p.MeasureText(text)
 		start := values[index]
 		if positionCenter {
@@ -693,8 +726,13 @@ func (p *Painter) MultiText(opt MultiTextOption) *Painter {
 		} else {
 			x = start - box.Width()>>1
 		}
+		x += offset.Left
+		y += offset.Top
 		p.Text(text, x, y)
 	}
+	if isTextRotation {
+		p.ClearTextRotation()
+	}
 	return p
 }
 
@@ -765,6 +803,48 @@ func (p *Painter) Rect(box Box) *Painter {
 	return p
 }
 
+func (p *Painter) RoundedRect(box Box, radius int) *Painter {
+	r := (box.Right - box.Left) / 2
+	if radius > r {
+		radius = r
+	}
+	rx := float64(radius)
+	ry := float64(radius)
+	p.MoveTo(box.Left+radius, box.Top)
+	p.LineTo(box.Right-radius, box.Top)
+
+	cx := box.Right - radius
+	cy := box.Top + radius
+	// right top
+	p.ArcTo(cx, cy, rx, ry, -math.Pi/2, math.Pi/2)
+
+	p.LineTo(box.Right, box.Bottom-radius)
+
+	// right bottom
+	cx = box.Right - radius
+	cy = box.Bottom - radius
+	p.ArcTo(cx, cy, rx, ry, 0.0, math.Pi/2)
+
+	p.LineTo(box.Left+radius, box.Bottom)
+
+	// left bottom
+	cx = box.Left + radius
+	cy = box.Bottom - radius
+	p.ArcTo(cx, cy, rx, ry, math.Pi/2, math.Pi/2)
+
+	p.LineTo(box.Left, box.Top+radius)
+
+	// left top
+	cx = box.Left + radius
+	cy = box.Top + radius
+	p.ArcTo(cx, cy, rx, ry, math.Pi, math.Pi/2)
+
+	p.Close()
+	p.FillStroke()
+	p.Fill()
+	return p
+}
+
 func (p *Painter) LegendLineDot(box Box) *Painter {
 	width := box.Width()
 	height := box.Height()
@@ -780,3 +860,7 @@ func (p *Painter) LegendLineDot(box Box) *Painter {
 	p.FillStroke()
 	return p
 }
+
+func (p *Painter) GetRenderer() chart.Renderer {
+	return p.render
+}

painter_test.go

@@ -28,8 +28,8 @@ import (
 
 	"github.com/golang/freetype/truetype"
 	"github.com/stretchr/testify/assert"
-	"github.com/wcharczuk/go-chart/v2"
-	"github.com/wcharczuk/go-chart/v2/drawing"
+	"git.smarteching.com/zeni/go-chart/v2"
+	"git.smarteching.com/zeni/go-chart/v2/drawing"
 )
 
 func TestPainterOption(t *testing.T) {
@@ -343,6 +343,29 @@ func TestPainter(t *testing.T) {
 	}
 }
 
+func TestRoundedRect(t *testing.T) {
+	assert := assert.New(t)
+	p, err := NewPainter(PainterOptions{
+		Width:  400,
+		Height: 300,
+		Type:   ChartOutputSVG,
+	})
+	assert.Nil(err)
+	p.OverrideDrawingStyle(Style{
+		FillColor:   drawing.ColorWhite,
+		StrokeWidth: 1,
+		StrokeColor: drawing.ColorWhite,
+	}).RoundedRect(Box{
+		Left:   10,
+		Right:  30,
+		Bottom: 150,
+		Top:    10,
+	}, 5)
+	buf, err := p.Bytes()
+	assert.Nil(err)
+	assert.Equal("<svg xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\" width=\"400\" height=\"300\">\\n<path  d=\"M 15 10\nL 25 10\nL 25 10\nA 5 5 90.00 0 1 30 15\nL 30 145\nL 30 145\nA 5 5 90.00 0 1 25 150\nL 15 150\nL 15 150\nA 5 5 90.00 0 1 10 145\nL 10 15\nL 10 15\nA 5 5 90.00 0 1 15 10\nZ\" style=\"stroke-width:1;stroke:rgba(255,255,255,1.0);fill:rgba(255,255,255,1.0)\"/><path  d=\"\" style=\"stroke-width:1;stroke:rgba(255,255,255,1.0);fill:rgba(255,255,255,1.0)\"/></svg>", string(buf))
+}
+
 func TestPainterTextFit(t *testing.T) {
 	assert := assert.New(t)
 	p, err := NewPainter(PainterOptions{
@@ -351,7 +374,7 @@ func TestPainterTextFit(t *testing.T) {
 		Type:   ChartOutputSVG,
 	})
 	assert.Nil(err)
-	f, _ := chart.GetDefaultFont()
+	f, _ := GetDefaultFont()
 	style := Style{
 		FontSize:  12,
 		FontColor: chart.ColorBlack,

pie_chart.go

@@ -27,7 +27,7 @@ import (
 	"math"
 
 	"github.com/golang/freetype/truetype"
-	"github.com/wcharczuk/go-chart/v2"
+	"git.smarteching.com/zeni/go-chart/v2"
 )
 
 type pieChart struct {
@@ -63,6 +63,96 @@ func NewPieChart(p *Painter, opt PieChartOption) *pieChart {
 	}
 }
 
+type sector struct {
+	value       float64
+	percent     float64
+	cx          int
+	cy          int
+	rx          float64
+	ry          float64
+	start       float64
+	delta       float64
+	offset      int
+	quadrant    int
+	lineStartX  int
+	lineStartY  int
+	lineBranchX int
+	lineBranchY int
+	lineEndX    int
+	lineEndY    int
+	showLabel   bool
+	label       string
+	series      Series
+	color       Color
+}
+
+func NewSector(cx int, cy int, radius float64, labelRadius float64, value float64, currentValue float64, totalValue float64, labelLineLength int, label string, series Series, color Color) sector {
+	s := sector{}
+	s.value = value
+	s.percent = value / totalValue
+	s.cx = cx
+	s.cy = cy
+	s.rx = radius
+	s.ry = radius
+	p := (currentValue + value/2) / totalValue
+	if p < 0.25 {
+		s.quadrant = 1
+	} else if p < 0.5 {
+		s.quadrant = 4
+	} else if p < 0.75 {
+		s.quadrant = 3
+	} else {
+		s.quadrant = 2
+	}
+	s.start = chart.PercentToRadians(currentValue/totalValue) - math.Pi/2
+	s.delta = chart.PercentToRadians(value / totalValue)
+	angle := s.start + s.delta/2
+	s.lineStartX = cx + int(radius*math.Cos(angle))
+	s.lineStartY = cy + int(radius*math.Sin(angle))
+	s.lineBranchX = cx + int(labelRadius*math.Cos(angle))
+	s.lineBranchY = cy + int(labelRadius*math.Sin(angle))
+	s.offset = labelLineLength
+	if s.lineBranchX <= cx {
+		s.offset *= -1
+	}
+	s.lineEndX = s.lineBranchX + s.offset
+	s.lineEndY = s.lineBranchY
+	s.series = series
+	s.color = color
+	s.showLabel = series.Label.Show
+	s.label = NewPieLabelFormatter([]string{label}, series.Label.Formatter)(0, s.value, s.percent)
+	return s
+}
+
+func (s *sector) calculateY(prevY int) int {
+	for i := 0; i <= s.cy; i++ {
+		if s.quadrant <= 2 {
+			if (prevY - s.lineBranchY) > labelFontSize+5 {
+				break
+			}
+			s.lineBranchY -= 1
+		} else {
+			if (s.lineBranchY - prevY) > labelFontSize+5 {
+				break
+			}
+			s.lineBranchY += 1
+		}
+	}
+	s.lineEndY = s.lineBranchY
+	return s.lineBranchY
+}
+
+func (s *sector) calculateTextXY(textBox Box) (x int, y int) {
+	textMargin := 3
+	x = s.lineEndX + textMargin
+	y = s.lineEndY + textBox.Height()>>1 - 1
+	if s.offset < 0 {
+		textWidth := textBox.Width()
+		x = s.lineEndX - textWidth - textMargin
+	}
+	return
+}
+
 func (p *pieChart) render(result *defaultRenderResult, seriesList SeriesList) (Box, error) {
 	opt := p.opt
 	values := make([]float64, len(seriesList))
@@ -101,98 +191,103 @@ func (p *pieChart) render(result *defaultRenderResult, seriesList SeriesList) (B
 	theme := opt.Theme
 
 	currentValue := float64(0)
-	prevPoints := make([]Point, 0)
 
-	isOverride := func(x, y int) bool {
-		for _, p := range prevPoints {
-			if math.Abs(float64(p.Y-y)) > labelFontSize {
-				continue
-			}
-			// label可能较多内容，不好计算横向占用空间
-			// 因此x的位置需要中间位置两侧，否则认为override
-			if (p.X <= cx && x <= cx) ||
-				(p.X > cx && x > cx) {
-				return true
+	var quadrant1, quadrant2, quadrant3, quadrant4 []sector
+	for index, v := range values {
+		series := seriesList[index]
+		color := theme.GetSeriesColor(index)
+		if index == len(values)-1 {
+			if color == theme.GetSeriesColor(0) {
+				color = theme.GetSeriesColor(1)
 			}
 		}
-		return false
+		s := NewSector(cx, cy, radius, labelRadius, v, currentValue, total, labelLineWidth, seriesNames[index], series, color)
+		switch quadrant := s.quadrant; quadrant {
+		case 1:
+			quadrant1 = append([]sector{s}, quadrant1...)
+		case 2:
+			quadrant2 = append(quadrant2, s)
+		case 3:
+			quadrant3 = append([]sector{s}, quadrant3...)
+		case 4:
+			quadrant4 = append(quadrant4, s)
+		}
+		currentValue += v
 	}
+	sectors := append(quadrant1, quadrant4...)
+	sectors = append(sectors, quadrant3...)
+	sectors = append(sectors, quadrant2...)
 
-	for index, v := range values {
+	currentQuadrant := 0
+	prevY := 0
+	maxY := 0
+	minY := 0
+	for _, s := range sectors {
 		seriesPainter.OverrideDrawingStyle(Style{
 			StrokeWidth: 1,
-			StrokeColor: theme.GetSeriesColor(index),
-			FillColor:   theme.GetSeriesColor(index),
+			StrokeColor: s.color,
+			FillColor:   s.color,
 		})
-		seriesPainter.MoveTo(cx, cy)
-		start := chart.PercentToRadians(currentValue/total) - math.Pi/2
-		currentValue += v
-		percent := (v / total)
-		delta := chart.PercentToRadians(percent)
-		seriesPainter.ArcTo(cx, cy, radius, radius, start, delta).
-			LineTo(cx, cy).
-			Close().
-			FillStroke()
-
-		series := seriesList[index]
-		// 是否显示label
-		showLabel := series.Label.Show
-		if !showLabel {
+		seriesPainter.MoveTo(s.cx, s.cy)
+		seriesPainter.ArcTo(s.cx, s.cy, s.rx, s.ry, s.start, s.delta).LineTo(s.cx, s.cy).Close().FillStroke()
+		if !s.showLabel {
 			continue
 		}
-
-		// label的角度为饼块中间
-		angle := start + delta/2
-		startx := cx + int(radius*math.Cos(angle))
-		starty := cy + int(radius*math.Sin(angle))
-
-		endx := cx + int(labelRadius*math.Cos(angle))
-		endy := cy + int(labelRadius*math.Sin(angle))
-		// 计算是否有重叠，如果有则调整y坐标位置
-		// 最多只尝试5次
-		for i := 0; i < 5; i++ {
-			if !isOverride(endx, endy) {
-				break
+		if currentQuadrant != s.quadrant {
+			if s.quadrant == 1 {
+				minY = cy * 2
+				maxY = 0
+				prevY = cy * 2
 			}
-			endy -= (labelFontSize << 1)
+			if s.quadrant == 2 {
+				if currentQuadrant != 3 {
+					prevY = s.lineEndY
+				} else {
+					prevY = minY
+				}
+			}
+			if s.quadrant == 3 {
+				if currentQuadrant != 4 {
+					prevY = s.lineEndY
+				} else {
+					minY = cy * 2
+					maxY = 0
+					prevY = 0
+				}
+			}
+			if s.quadrant == 4 {
+				if currentQuadrant != 1 {
+					prevY = s.lineEndY
+				} else {
+					prevY = maxY
+				}
+			}
+			currentQuadrant = s.quadrant
 		}
-		prevPoints = append(prevPoints, Point{
-			X: endx,
-			Y: endy,
-		})
-
-		seriesPainter.MoveTo(startx, starty)
-		seriesPainter.LineTo(endx, endy)
-		offset := labelLineWidth
-		if endx < cx {
-			offset *= -1
+		prevY = s.calculateY(prevY)
+		if prevY > maxY {
+			maxY = prevY
 		}
-		seriesPainter.MoveTo(endx, endy)
-		endx += offset
-		seriesPainter.LineTo(endx, endy)
+		if prevY < minY {
+			minY = prevY
+		}
+		seriesPainter.MoveTo(s.lineStartX, s.lineStartY)
+		seriesPainter.LineTo(s.lineBranchX, s.lineBranchY)
+		seriesPainter.MoveTo(s.lineBranchX, s.lineBranchY)
+		seriesPainter.LineTo(s.lineEndX, s.lineEndY)
 		seriesPainter.Stroke()
-
 		textStyle := Style{
 			FontColor: theme.GetTextColor(),
 			FontSize:  labelFontSize,
 			Font:      opt.Font,
 		}
-		if !series.Label.Color.IsZero() {
-			textStyle.FontColor = series.Label.Color
+		if !s.series.Label.Color.IsZero() {
+			textStyle.FontColor = s.series.Label.Color
 		}
 		seriesPainter.OverrideTextStyle(textStyle)
-		text := NewPieLabelFormatter(seriesNames, series.Label.Formatter)(index, v, percent)
-		textBox := seriesPainter.MeasureText(text)
-		textMargin := 3
-		x := endx + textMargin
-		y := endy + textBox.Height()>>1 - 1
-		if offset < 0 {
-			textWidth := textBox.Width()
-			x = endx - textWidth - textMargin
-		}
-		seriesPainter.Text(text, x, y)
+		x, y := s.calculateTextXY(seriesPainter.MeasureText(s.label))
+		seriesPainter.Text(s.label, x, y)
 	}
-
 	return p.p.box, nil
 }
 

radar_chart.go

@@ -25,9 +25,10 @@ package charts
 import (
 	"errors"
 
+	"github.com/dustin/go-humanize"
 	"github.com/golang/freetype/truetype"
-	"github.com/wcharczuk/go-chart/v2"
-	"github.com/wcharczuk/go-chart/v2/drawing"
+	"git.smarteching.com/zeni/go-chart/v2"
+	"git.smarteching.com/zeni/go-chart/v2/drawing"
 )
 
 type radarChart struct {
@@ -230,9 +231,15 @@ func (r *radarChart) render(result *defaultRenderResult, seriesList SeriesList)
 			StrokeColor: color,
 			FillColor:   dotFillColor,
 		})
-		for _, point := range linePoints {
+		for index, point := range linePoints {
 			seriesPainter.Circle(dotWith, point.X, point.Y)
 			seriesPainter.FillStroke()
+			if series.Label.Show && index < len(series.Data) {
+				value := humanize.FtoaWithDigits(series.Data[index].Value, 2)
+				b := seriesPainter.MeasureText(value)
+				seriesPainter.Text(value, point.X-b.Width()/2, point.Y)
+			}
+
 		}
 	}
 

range.go

@@ -121,6 +121,9 @@ func (r axisRange) Values() []string {
 }
 
 func (r *axisRange) getHeight(value float64) int {
+	if r.max <= r.min {
+		return 0
+	}
 	v := (value - r.min) / (r.max - r.min)
 	return int(v * float64(r.size))
 }

series.go

@@ -26,7 +26,7 @@ import (
 	"strings"
 
 	"github.com/dustin/go-humanize"
-	"github.com/wcharczuk/go-chart/v2"
+	"git.smarteching.com/zeni/go-chart/v2"
 )
 
 type SeriesData struct {
@@ -79,6 +79,12 @@ type SeriesLabel struct {
 	Show bool
 	// Distance to the host graphic element.
 	Distance int
+	// The position of label
+	Position string
+	// The offset of label's position
+	Offset Box
+	// The font size of label
+	FontSize float64
 }
 
 const (
@@ -120,6 +126,8 @@ type Series struct {
 	Name string
 	// Radius for Pie chart, e.g.: 40%, default is "40%"
 	Radius string
+	// Round for bar chart
+	RoundRadius int
 	// Mark point for series
 	MarkPoint SeriesMarkPoint
 	// Make line for series
@@ -273,6 +281,14 @@ func NewPieLabelFormatter(seriesNames []string, layout string) LabelFormatter {
 	return NewLabelFormatter(seriesNames, layout)
 }
 
+// NewFunnelLabelFormatter returns a funner label formatter
+func NewFunnelLabelFormatter(seriesNames []string, layout string) LabelFormatter {
+	if len(layout) == 0 {
+		layout = "{b}({d})"
+	}
+	return NewLabelFormatter(seriesNames, layout)
+}
+
 // NewValueLabelFormatter returns a value formatter
 func NewValueLabelFormatter(seriesNames []string, layout string) LabelFormatter {
 	if len(layout) == 0 {

series_label.go

@@ -24,7 +24,7 @@ package charts
 
 import (
 	"github.com/golang/freetype/truetype"
-	"github.com/wcharczuk/go-chart/v2"
+	"git.smarteching.com/zeni/go-chart/v2"
 )
 
 type labelRenderValue struct {
@@ -32,6 +32,8 @@ type labelRenderValue struct {
 	Style Style
 	X     int
 	Y     int
+	// 旋转
+	Radians float64
 }
 
 type LabelValue struct {
@@ -39,6 +41,14 @@ type LabelValue struct {
 	Value float64
 	X     int
 	Y     int
+	// 旋转
+	Radians float64
+	// 字体颜色
+	FontColor Color
+	// 字体大小
+	FontSize float64
+	Orient   string
+	Offset   Box
 }
 
 type SeriesLabelPainter struct {
@@ -81,27 +91,58 @@ func (o *SeriesLabelPainter) Add(value LabelValue) {
 		FontSize:  labelFontSize,
 		Font:      o.font,
 	}
+	if value.FontSize != 0 {
+		labelStyle.FontSize = value.FontSize
+	}
+	if !value.FontColor.IsZero() {
+		label.Color = value.FontColor
+	}
 	if !label.Color.IsZero() {
 		labelStyle.FontColor = label.Color
 	}
-	o.p.OverrideDrawingStyle(labelStyle)
-	textBox := o.p.MeasureText(text)
+	p := o.p
+	p.OverrideDrawingStyle(labelStyle)
+	rotated := value.Radians != 0
+	if rotated {
+		p.SetTextRotation(value.Radians)
+	}
+	textBox := p.MeasureText(text)
 	renderValue := labelRenderValue{
-		Text:  text,
-		Style: labelStyle,
-		X:     value.X - textBox.Width()>>1,
-		Y:     value.Y - distance,
+		Text:    text,
+		Style:   labelStyle,
+		X:       value.X,
+		Y:       value.Y,
+		Radians: value.Radians,
 	}
-	if textBox.Width()%2 != 0 {
-		renderValue.X++
+	if value.Orient != OrientHorizontal {
+		renderValue.X -= textBox.Width() >> 1
+		renderValue.Y -= distance
+	} else {
+		renderValue.X += distance
+		renderValue.Y += textBox.Height() >> 1
+		renderValue.Y -= 2
 	}
+	if rotated {
+		renderValue.X = value.X + textBox.Width()>>1 - 1
+		p.ClearTextRotation()
+	} else {
+		if textBox.Width()%2 != 0 {
+			renderValue.X++
+		}
+	}
+	renderValue.X += value.Offset.Left
+	renderValue.Y += value.Offset.Top
 	o.values = append(o.values, renderValue)
 }
 
 func (o *SeriesLabelPainter) Render() (Box, error) {
 	for _, item := range o.values {
 		o.p.OverrideTextStyle(item.Style)
-		o.p.Text(item.Text, item.X, item.Y)
+		if item.Radians != 0 {
+			o.p.TextRotation(item.Text, item.X, item.Y, item.Radians)
+		} else {
+			o.p.Text(item.Text, item.X, item.Y)
+		}
 	}
 	return chart.BoxZero, nil
 }

table.go

@@ -26,8 +26,8 @@ import (
 	"errors"
 
 	"github.com/golang/freetype/truetype"
-	"github.com/wcharczuk/go-chart/v2"
-	"github.com/wcharczuk/go-chart/v2/drawing"
+	"git.smarteching.com/zeni/go-chart/v2"
+	"git.smarteching.com/zeni/go-chart/v2/drawing"
 )
 
 type tableChart struct {

theme.go

@@ -24,8 +24,7 @@ package charts
 
 import (
 	"github.com/golang/freetype/truetype"
-	"github.com/wcharczuk/go-chart/v2"
-	"github.com/wcharczuk/go-chart/v2/drawing"
+	"git.smarteching.com/zeni/go-chart/v2/drawing"
 )
 
 const ThemeDark = "dark"
@@ -77,6 +76,19 @@ const defaultFontSize = 12.0
 
 var defaultTheme ColorPalette
 
+var defaultLightFontColor = drawing.Color{
+	R: 70,
+	G: 70,
+	B: 70,
+	A: 255,
+}
+var defaultDarkFontColor = drawing.Color{
+	R: 238,
+	G: 238,
+	B: 238,
+	A: 255,
+}
+
 func init() {
 	echartSeriesColors := []Color{
 		parseColor("#5470c6"),
@@ -311,7 +323,7 @@ func (t *themeColorPalette) GetFont() *truetype.Font {
 	if t.font != nil {
 		return t.font
 	}
-	f, _ := chart.GetDefaultFont()
+	f, _ := GetDefaultFont()
 	return f
 }
 

util.go

@@ -29,8 +29,8 @@ import (
 	"strings"
 
 	"github.com/dustin/go-humanize"
-	"github.com/wcharczuk/go-chart/v2"
-	"github.com/wcharczuk/go-chart/v2/drawing"
+	"git.smarteching.com/zeni/go-chart/v2"
+	"git.smarteching.com/zeni/go-chart/v2/drawing"
 )
 
 func TrueFlag() *bool {
@@ -262,3 +262,10 @@ func getPolygonPoints(center Point, radius float64, sides int) []Point {
 	}
 	return points
 }
+
+func isLightColor(c Color) bool {
+	r := float64(c.R) * float64(c.R) * 0.299
+	g := float64(c.G) * float64(c.G) * 0.587
+	b := float64(c.B) * float64(c.B) * 0.114
+	return math.Sqrt(r+g+b) > 127.5
+}

util_test.go

@@ -26,8 +26,8 @@ import (
 	"testing"
 
 	"github.com/stretchr/testify/assert"
-	"github.com/wcharczuk/go-chart/v2"
-	"github.com/wcharczuk/go-chart/v2/drawing"
+	"git.smarteching.com/zeni/go-chart/v2"
+	"git.smarteching.com/zeni/go-chart/v2/drawing"
 )
 
 func TestGetDefaultInt(t *testing.T) {
@@ -189,3 +189,35 @@ func TestParseColor(t *testing.T) {
 		A: 250,
 	}, c)
 }
+
+func TestIsLightColor(t *testing.T) {
+	assert := assert.New(t)
+
+	assert.True(isLightColor(drawing.Color{
+		R: 255,
+		G: 255,
+		B: 255,
+	}))
+	assert.True(isLightColor(drawing.Color{
+		R: 145,
+		G: 204,
+		B: 117,
+	}))
+
+	assert.False(isLightColor(drawing.Color{
+		R: 88,
+		G: 112,
+		B: 198,
+	}))
+
+	assert.False(isLightColor(drawing.Color{
+		R: 0,
+		G: 0,
+		B: 0,
+	}))
+	assert.False(isLightColor(drawing.Color{
+		R: 16,
+		G: 12,
+		B: 42,
+	}))
+}

xaxis.go

@@ -47,7 +47,13 @@ type XAxisOption struct {
 	// The line color of axis
 	StrokeColor Color
 	// The color of label
-	FontColor   Color
+	FontColor Color
+	// The text rotation of label
+	TextRotation float64
+	// The first axis
+	FirstAxis int
+	// The offset of label
+	LabelOffset Box
 	isValueAxis bool
 }
 
@@ -81,6 +87,9 @@ func (opt *XAxisOption) ToAxisOption() AxisOption {
 		FontColor:      opt.FontColor,
 		Show:           opt.Show,
 		SplitLineColor: opt.Theme.GetAxisSplitLineColor(),
+		TextRotation:   opt.TextRotation,
+		LabelOffset:    opt.LabelOffset,
+		FirstAxis:      opt.FirstAxis,
 	}
 	if opt.isValueAxis {
 		axisOpt.SplitLineShow = true

yaxis.go

@@ -50,6 +50,8 @@ type YAxisOption struct {
 	DivideCount    int
 	Unit           int
 	isCategoryAxis bool
+	// The flag for show axis split line, set this to true will show axis split line
+	SplitLineShow *bool
 }
 
 // NewYAxisOptions returns a y axis option
@@ -100,6 +102,9 @@ func (opt *YAxisOption) ToAxisOption(p *Painter) AxisOption {
 		axisOpt.StrokeWidth = 1
 		axisOpt.SplitLineShow = false
 	}
+	if opt.SplitLineShow != nil {
+		axisOpt.SplitLineShow = *opt.SplitLineShow
+	}
 	return axisOpt
 }