zeni/go-chart
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need to flesh out this test more.

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This commit is contained in:
Will Charczuk 2016-07-28 14:30:00 -07:00
parent 3d9cf0da0c
commit 84df29b1c6
8 changed files with 141 additions and 76 deletions
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48
annotation_series.go
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@ -2,18 +2,12 @@ package chart
import "math"
// 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
Annotations []Value2
}
// GetName returns the name of the time series.
@ -31,6 +25,17 @@ func (as AnnotationSeries) GetYAxis() YAxisType {
return as.YAxis
}
func (as AnnotationSeries) annotationStyleDefaults(defaults Style) Style {
return Style{
Font: defaults.Font,
FillColor: DefaultAnnotationFillColor,
FontSize: DefaultAnnotationFontSize,
StrokeColor: defaults.StrokeColor,
StrokeWidth: defaults.StrokeWidth,
Padding: DefaultAnnotationPadding,
}
}
// Measure returns a bounds box of the series.
func (as AnnotationSeries) Measure(r Renderer, canvasBox Box, xrange, yrange Range, defaults Style) Box {
box := Box{
@ -40,17 +45,11 @@ func (as AnnotationSeries) Measure(r Renderer, canvasBox Box, xrange, yrange Ran
Bottom: 0,
}
if as.Style.IsZero() || as.Style.Show {
style := as.Style.InheritFrom(Style{
Font: defaults.Font,
FillColor: DefaultAnnotationFillColor,
FontSize: DefaultAnnotationFontSize,
StrokeColor: defaults.StrokeColor,
StrokeWidth: defaults.StrokeWidth,
Padding: DefaultAnnotationPadding,
})
seriesStyle := as.Style.InheritFrom(as.annotationStyleDefaults(defaults))
for _, a := range as.Annotations {
lx := canvasBox.Left + xrange.Translate(a.X)
ly := canvasBox.Bottom - yrange.Translate(a.Y)
style := a.Style.InheritFrom(seriesStyle)
lx := canvasBox.Left + xrange.Translate(a.XValue)
ly := canvasBox.Bottom - yrange.Translate(a.YValue)
ab := MeasureAnnotation(r, canvasBox, style, lx, ly, a.Label)
box.Top = MinInt(box.Top, ab.Top)
box.Left = MinInt(box.Left, ab.Left)
@ -64,18 +63,11 @@ func (as AnnotationSeries) Measure(r Renderer, canvasBox Box, xrange, yrange Ran
// Render draws the series.
func (as AnnotationSeries) Render(r Renderer, canvasBox Box, xrange, yrange Range, defaults Style) {
if as.Style.IsZero() || as.Style.Show {
style := as.Style.InheritFrom(Style{
Font: defaults.Font,
FontColor: DefaultTextColor,
FillColor: DefaultAnnotationFillColor,
FontSize: DefaultAnnotationFontSize,
StrokeColor: defaults.StrokeColor,
StrokeWidth: defaults.StrokeWidth,
Padding: DefaultAnnotationPadding,
})
seriesStyle := as.Style.InheritFrom(as.annotationStyleDefaults(defaults))
for _, a := range as.Annotations {
lx := canvasBox.Left + xrange.Translate(a.X)
ly := canvasBox.Bottom - yrange.Translate(a.Y)
style := a.Style.InheritFrom(seriesStyle)
lx := canvasBox.Left + xrange.Translate(a.XValue)
ly := canvasBox.Bottom - yrange.Translate(a.YValue)
DrawAnnotation(r, canvasBox, style, lx, ly, a.Label)
}
}