aw/go-chart
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things.

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This commit is contained in:
Will Charczuk 2016-07-06 19:04:21 -07:00
parent b6b0409dbc
commit b9f1b00631
2 changed files with 26 additions and 1 deletions
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25
chart.go
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@ -179,7 +179,7 @@ func (c Chart) drawAxes(r Renderer) {
r.SetLineWidth(c.AxisStyle.GetStrokeWidth())
} else {
r.SetStrokeColor(DefaultAxisColor)
r.SetLineWidth(DefaultLineWidth)
r.SetLineWidth(DefaultAxisLineWidth)
}
r.MoveTo(c.GetCanvasLeft(), c.GetCanvasBottom())
r.LineTo(c.GetCanvasRight(), c.GetCanvasBottom())
@ -189,7 +189,30 @@ func (c Chart) drawAxes(r Renderer) {
}
func (c Chart) drawSeries(r Renderer, s Series) {
r.SetLineWidth(s.GetStyle().GetStrokeWidth())
r.SetStrokeColor(s.GetStyle().GetStrokeColor())
xrange := s.GetXRange(c.GetCanvasWidth())
yrange := s.GetYRange(c.GetCanvasHeight())
if s.Len() == 0 {
return
}
v0 := s.GetValue(0)
x0 := xrange.Translate(v0.X)
y0 := yrange.Translate(v0.Y)
r.MoveTo(x0, y0)
var v Point
var x, y int
for index := 0; index < s.Len(); index++ {
v = s.GetValue(0)
x = xrange.Translate(v.X)
y = yrange.Translate(v.Y)
r.LineTo(x, y)
}
r.FillStroke()
}
func (c Chart) drawTitle(r Renderer) error {

2
defaults.go
View File

@ -17,6 +17,8 @@ const (
DefaultPadding = 10
// DefaultLineWidth is the default chart line width.
DefaultLineWidth = 2.0
// DefaultAxisLineWidth is the line width of the axis lines.
DefaultAxisLineWidth = 1.0
//DefaultDPI is the default dots per inch for the chart.
DefaultDPI = 120.0
// DefaultMinimumFontSize is the default minimum font size.