feat: support make point and make line

mark_point.go

@@ -28,14 +28,28 @@ import (
 	"github.com/wcharczuk/go-chart/v2/drawing"
 )
 
+func NewMarkPoint(markPointTypes ...string) SeriesMarkPoint {
+	data := make([]SeriesMarkPointData, len(markPointTypes))
+	for index, t := range markPointTypes {
+		data[index] = SeriesMarkPointData{
+			Type: t,
+		}
+	}
+	return SeriesMarkPoint{
+		Data: data,
+	}
+}
+
 type markPointRenderOption struct {
+	Draw      *Draw
 	FillColor drawing.Color
 	Font      *truetype.Font
 	Series    *Series
 	Points    []Point
 }
 
-func markPointRender(d *Draw, opt markPointRenderOption) {
+func markPointRender(opt *markPointRenderOption) {
+	d := opt.Draw
 	s := opt.Series
 	if len(s.MarkPoint.Data) == 0 {
 		return
@@ -54,7 +68,7 @@ func markPointRender(d *Draw, opt markPointRenderOption) {
 	// 设置文本样式
 	chart.Style{
 		FontColor:   NewTheme(ThemeDark).GetTextColor(),
-		FontSize:    10,
+		FontSize:    labelFontSize,
 		StrokeWidth: 1,
 		Font:        opt.Font,
 	}.WriteTextOptionsToRenderer(r)
@@ -62,7 +76,7 @@ func markPointRender(d *Draw, opt markPointRenderOption) {
 		p := points[summary.MinIndex]
 		value := summary.MinValue
 		switch markPointData.Type {
-		case SeriesMarkPointDataTypeMax:
+		case SeriesMarkDataTypeMax:
 			p = points[summary.MaxIndex]
 			value = summary.MaxValue
 		}