aw/go-chart
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This commit is contained in:
Will Charczuk 2016-07-11 00:02:31 -07:00
parent cb5c2df263
commit c173dcadd3
2 changed files with 16 additions and 5 deletions
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8
testserver/main.go
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@ -112,13 +112,15 @@ func measureTestHandler(rc *web.RequestContext) web.ControllerResult {
} }
r.SetDPI(96) r.SetDPI(96)
r.SetFont(f) r.SetFont(f)
r.SetFontSize(24.0) r.SetFontSize(10.0)
r.SetFontColor(drawing.ColorBlack) r.SetFontColor(drawing.ColorBlack)
r.SetStrokeColor(drawing.ColorBlack) r.SetStrokeColor(drawing.ColorBlack)
label := "goog - 702.23"
tx, ty := 64, 64 tx, ty := 64, 64
tw, th := r.MeasureText("test") tw, th := r.MeasureText(label)
r.MoveTo(tx, ty) r.MoveTo(tx, ty)
r.LineTo(tx+tw, ty) r.LineTo(tx+tw, ty)
r.LineTo(tx+tw, ty-th) r.LineTo(tx+tw, ty-th)
@ -126,7 +128,7 @@ func measureTestHandler(rc *web.RequestContext) web.ControllerResult {
r.LineTo(tx, ty) r.LineTo(tx, ty)
r.Stroke() r.Stroke()
r.Text("test", tx, ty) r.Text(label, tx, ty)
r.Save(rc.Response) r.Save(rc.Response)
return nil return nil

13
xaxis.go
View File

@ -67,8 +67,6 @@ func (xa XAxis) getTickCount(r Renderer, ra Range, vf ValueFormatter) int {
// Render renders the axis // Render renders the axis
func (xa XAxis) Render(r Renderer, canvasBox Box, ra Range, ticks []Tick) { func (xa XAxis) Render(r Renderer, canvasBox Box, ra Range, ticks []Tick) {
tickFontSize := xa.Style.GetFontSize(DefaultFontSize) tickFontSize := xa.Style.GetFontSize(DefaultFontSize)
tickHeight := drawing.PointsToPixels(r.GetDPI(), tickFontSize)
ty := canvasBox.Bottom + DefaultXAxisMargin + int(tickHeight)
r.SetStrokeColor(xa.Style.GetStrokeColor(DefaultAxisColor)) r.SetStrokeColor(xa.Style.GetStrokeColor(DefaultAxisColor))
r.SetStrokeWidth(xa.Style.GetStrokeWidth(DefaultAxisLineWidth)) r.SetStrokeWidth(xa.Style.GetStrokeWidth(DefaultAxisLineWidth))
@ -81,6 +79,17 @@ func (xa XAxis) Render(r Renderer, canvasBox Box, ra Range, ticks []Tick) {
r.SetFontSize(tickFontSize) r.SetFontSize(tickFontSize)
sort.Sort(Ticks(ticks)) sort.Sort(Ticks(ticks))
textHeight := 0
for _, t := range ticks {
_, th := r.MeasureText(t.Label)
if th > textHeight {
textHeight = th
}
}
ty := canvasBox.Bottom + DefaultXAxisMargin + int(textHeight)
for _, t := range ticks { for _, t := range ticks {
v := t.Value v := t.Value
x := ra.Translate(v) x := ra.Translate(v)