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ticks refactor.

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This commit is contained in:
Will Charczuk 2016-07-23 15:35:49 -07:00
parent 78645130e4
commit a6b6097c20
9 changed files with 131 additions and 184 deletions
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28
yaxis.go
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@ -41,29 +41,11 @@ func (ya YAxis) GetTicks(r Renderer, ra Range, defaults Style, vf ValueFormatter
if len(ya.Ticks) > 0 {
return ya.Ticks
}
return ya.generateTicks(r, ra, defaults, vf)
}
func (ya YAxis) generateTicks(r Renderer, ra Range, defaults Style, vf ValueFormatter) []Tick {
step := ya.getTickStep(r, ra, defaults, vf)
ticks := GenerateTicksWithStep(ra, step, vf)
return ticks
}
func (ya YAxis) getTickStep(r Renderer, ra Range, defaults Style, vf ValueFormatter) float64 {
tickCount := ya.getTickCount(r, ra, defaults, vf)
step := ra.GetDelta() / float64(tickCount)
return step
}
func (ya YAxis) getTickCount(r Renderer, ra Range, defaults Style, vf ValueFormatter) int {
r.SetFont(ya.Style.GetFont(defaults.GetFont()))
r.SetFontSize(ya.Style.GetFontSize(defaults.GetFontSize(DefaultFontSize)))
//given the domain, figure out how many ticks we can draw ...
label := vf(ra.GetMin())
tb := r.MeasureText(label)
count := int(math.Ceil(float64(ra.GetDomain()) / float64(tb.Height()+DefaultMinimumTickVerticalSpacing)))
return count
if tp, isTickProvider := ra.(TicksProvider); isTickProvider {
return tp.GetTicks(vf)
}
step := CalculateContinuousTickStep(r, ra, true, ya.Style.InheritFrom(defaults), vf)
return GenerateContinuousTicksWithStep(ra, step, vf)
}
// GetGridLines returns the gridlines for the axis.