snapshot.

annotation_series.go

@@ -0,0 +1,26 @@
+package chart
+
+// Annotation is a label on the chart.
+type Annotation struct {
+	X, Y  float64
+	Label string
+}
+
+// AnnotationSeries is a series of labels on the chart.
+type AnnotationSeries struct {
+	Name        string
+	Style       Style
+	YAxis       YAxisType
+	Annotations []Annotation
+}
+
+// Render draws the series.
+func (as AnnotationSeries) Render(r Renderer, canvasBox Box, xrange, yrange Range) {
+	if as.Style.Show {
+		for _, a := range as.Annotations {
+			lx := xrange.Translate(a.X) + canvasBox.Left
+			ly := yrange.Translate(a.Y) + canvasBox.Top
+			DrawAnnotation(r, canvasBox, xrange, yrange, as.Style, lx, ly, a.Label)
+		}
+	}
+}