zeni/go-chart
1
0
Fork 0
Code Issues Pull requests Projects Releases 2 Packages Wiki Activity Actions

coverage at 63.8%

Browse source
This commit is contained in:
Will Charczuk 2016-07-12 22:04:30 -07:00
parent ee34d53209
commit 989aa5974d
6 changed files with 317 additions and 21 deletions
Download patch file Download diff file Expand all files Collapse all files

18
yaxis.go
View file

@ -36,30 +36,32 @@ func (ya YAxis) GetStyle() Style {
// GetTicks returns the ticks for a series. It coalesces between user provided ticks and
// generated ticks.
func (ya YAxis) GetTicks(r Renderer, ra Range, vf ValueFormatter) []Tick {
func (ya YAxis) GetTicks(r Renderer, ra Range, defaults Style, vf ValueFormatter) []Tick {
var ticks []Tick
if len(ya.Ticks) > 0 {
ticks = ya.Ticks
} else {
ticks = ya.generateTicks(r, ra, vf)
ticks = ya.generateTicks(r, ra, defaults, vf)
}
return ticks
}
func (ya YAxis) generateTicks(r Renderer, ra Range, vf ValueFormatter) []Tick {
step := ya.getTickStep(r, ra, 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, vf ValueFormatter) float64 {
tickCount := ya.getTickCount(r, ra, vf)
func (ya YAxis) getTickStep(r Renderer, ra Range, defaults Style, vf ValueFormatter) float64 {
tickCount := ya.getTickCount(r, ra, defaults, vf)
step := ra.Delta() / float64(tickCount)
return step
}
func (ya YAxis) getTickCount(r Renderer, ra Range, vf ValueFormatter) int {
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.Min)
tb := r.MeasureText(label)
@ -127,7 +129,7 @@ func (ya YAxis) Render(r Renderer, canvasBox Box, ra Range, defaults Style, tick
r.SetStrokeWidth(ya.Style.GetStrokeWidth(defaults.StrokeWidth))
r.SetFont(ya.Style.GetFont(defaults.GetFont()))
r.SetFontColor(ya.Style.GetFontColor(DefaultAxisColor))
r.SetFontSize(ya.Style.GetFontSize(defaults.GetFontSize()))
r.SetFontSize(ya.Style.GetFontSize(defaults.GetFontSize(DefaultFontSize)))
sort.Sort(Ticks(ticks))