zeni/go-chart
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fixing undertick

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This commit is contained in:
Will Charczuk 2016-07-30 10:01:16 -07:00
parent bf962d256a
commit 457fefbc6d
1 changed files with 7 additions and 4 deletions
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11
xaxis.go
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@ -110,20 +110,22 @@ func (xa XAxis) Render(r Renderer, canvasBox Box, ra Range, defaults Style, tick
for index, t := range ticks {
v := t.Value
lx := ra.Translate(v)
tb := r.MeasureText(t.Label)
tx = canvasBox.Left + lx
ty = canvasBox.Bottom + DefaultXAxisMargin + tb.Height()
tickStyle.GetStrokeOptions().WriteToRenderer(r)
r.MoveTo(tx, canvasBox.Bottom)
r.LineTo(tx, canvasBox.Bottom+DefaultVerticalTickHeight)
r.Stroke()
tickStyle.GetTextOptions().WriteToRenderer(r)
tb := r.MeasureText(t.Label)
switch tp {
case TickPositionUnderTick:
tickStyle.GetTextOptions().WriteToRenderer(r)
case TickPositionUnderTick, TickPositionUnset:
ty = canvasBox.Bottom + DefaultXAxisMargin + tb.Height()
r.Text(t.Label, tx-tb.Width()>>1, ty)
break
case TickPositionBetweenTicks:
if index > 0 {
llx := ra.Translate(ticks[index-1].Value)
@ -135,6 +137,7 @@ func (xa XAxis) Render(r Renderer, canvasBox Box, ra Range, defaults Style, tick
Bottom: canvasBox.Bottom + DefaultXAxisMargin + tb.Height(),
}, tickStyle.InheritFrom(Style{TextHorizontalAlign: TextHorizontalAlignCenter}))
}
break
}
}