termui/gauge.go
2015-03-03 13:28:09 -05:00

57 lines
959 B
Go

package termui
import "strconv"
type Gauge struct {
Block
Percent int
BarColor Attribute
PercentColor Attribute
}
func NewGauge() *Gauge {
g := &Gauge{Block: *NewBlock(), PercentColor: ColorWhite, BarColor: ColorGreen}
g.Width = 12
g.Height = 5
return g
}
func (g *Gauge) Buffer() []Point {
ps := g.Block.Buffer()
w := g.Percent * g.innerWidth / 100
s := strconv.Itoa(g.Percent) + "%"
rs := str2runes(s)
prx := g.innerX + g.innerWidth/2 - 1
pry := g.innerY + g.innerHeight/2
// plot bar
for i := 0; i < g.innerHeight; i++ {
for j := 0; j < w; j++ {
p := Point{}
p.X = g.innerX + j
p.Y = g.innerY + i
p.Ch = ' '
p.Bg = g.BarColor
ps = append(ps, p)
}
}
// plot percentage
for i, v := range rs {
p := Point{}
p.X = prx + i
p.Y = pry
p.Ch = v
p.Fg = g.PercentColor
if w > g.innerWidth/2-1+i {
p.Bg = g.BarColor
} else {
p.Bg = g.Block.BgColor
}
ps = append(ps, p)
}
return ps
}