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feat: support legend render

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This commit is contained in:
vicanso 2022-06-07 23:04:39 +08:00
parent 7ee13fe914
commit 4cf494088e
3 changed files with 216 additions and 5 deletions
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56
examples/painter/main.go
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@ -26,7 +26,7 @@ func writeFile(buf []byte) error {
func main() {
p, err := charts.NewPainter(charts.PainterOptions{
Width: 400,
Width: 600,
Height: 1200,
Type: charts.ChartOutputPNG,
})
@ -422,6 +422,60 @@ func main() {
StrokeColor: drawing.ColorBlue,
}).Render()
top += 100
charts.NewLegendPainter(p.Child(charts.PainterBoxOption(charts.Box{
Top: top,
Left: 1,
Right: p.Width() - 1,
Bottom: top + 30,
})), charts.LegendPainterOption{
Data: []string{
"Email",
"Union Ads",
"Video Ads",
"Direct",
},
FontSize: 12,
FontColor: drawing.ColorBlack,
}).Render()
top += 30
charts.NewLegendPainter(p.Child(charts.PainterBoxOption(charts.Box{
Top: top,
Left: 1,
Right: p.Width() - 1,
Bottom: top + 30,
})), charts.LegendPainterOption{
Data: []string{
"Email",
"Union Ads",
"Video Ads",
"Direct",
},
Align: charts.AlignRight,
FontSize: 16,
Icon: charts.IconRect,
FontColor: drawing.ColorBlack,
}).Render()
top += 30
charts.NewLegendPainter(p.Child(charts.PainterBoxOption(charts.Box{
Top: top,
Left: 1,
Right: p.Width() - 1,
Bottom: top + 100,
})), charts.LegendPainterOption{
Data: []string{
"Email",
"Union Ads",
"Video Ads",
"Direct",
},
Orient: charts.OrientVertical,
FontSize: 12,
FontColor: drawing.ColorBlack,
}).Render()
buf, err := p.Bytes()
if err != nil {
panic(err)