zeni/go-charts
1
0
Fork 0
Code Issues Pull requests Projects Releases 47 Packages Wiki Activity Actions

feat: support rounded rect for bar chart

Browse source
This commit is contained in:
vicanso 2024-05-16 20:02:24 +08:00
parent 5a69c3e5a3
commit 9b7634c2c2
5 changed files with 156 additions and 8 deletions
Download patch file Download diff file Expand all files Collapse all files

42
painter.go
View file

@ -803,6 +803,48 @@ func (p *Painter) Rect(box Box) *Painter {
return p
}
func (p *Painter) RoundedRect(box Box, radius int) *Painter {
r := (box.Right - box.Left) / 2
if radius > r {
radius = r
}
rx := float64(radius)
ry := float64(radius)
p.MoveTo(box.Left+radius, box.Top)
p.LineTo(box.Right-radius, box.Top)
cx := box.Right - radius
cy := box.Top + radius
// right top
p.ArcTo(cx, cy, rx, ry, -math.Pi/2, math.Pi/2)
p.LineTo(box.Right, box.Bottom-radius)
// right bottom
cx = box.Right - radius
cy = box.Bottom - radius
p.ArcTo(cx, cy, rx, ry, 0.0, math.Pi/2)
p.LineTo(box.Left+radius, box.Bottom)
// left bottom
cx = box.Left + radius
cy = box.Bottom - radius
p.ArcTo(cx, cy, rx, ry, math.Pi/2, math.Pi/2)
p.LineTo(box.Left, box.Top+radius)
// left top
cx = box.Left + radius
cy = box.Top + radius
p.ArcTo(cx, cy, rx, ry, math.Pi, math.Pi/2)
p.Close()
p.FillStroke()
p.Fill()
return p
}
func (p *Painter) LegendLineDot(box Box) *Painter {
width := box.Width()
height := box.Height()