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// Copyright 2017 Zack Guo <zack.y.guo@gmail.com>. All rights reserved.
// Use of this source code is governed by a MIT license that can
// be found in the LICENSE file.
package widgets
import (
"fmt"
"image"
. "github.com/gizak/termui/v3"
)
type Gauge struct {
Block
Percent int
BarColor Color
Label string
LabelStyle Style
}
func NewGauge() *Gauge {
return &Gauge{
Block: *NewBlock(),
BarColor: Theme.Gauge.Bar,
LabelStyle: Theme.Gauge.Label,
}
}
func (self *Gauge) Draw(buf *Buffer) {
self.Block.Draw(buf)
label := self.Label
if label == "" {
label = fmt.Sprintf("%d%%", self.Percent)
}
// plot bar
barWidth := int((float64(self.Percent) / 100) * float64(self.Inner.Dx()))
buf.Fill(
NewCell(' ', NewStyle(ColorClear, self.BarColor)),
image.Rect(self.Inner.Min.X, self.Inner.Min.Y, self.Inner.Min.X+barWidth, self.Inner.Max.Y),
)
// plot label
labelXCoordinate := self.Inner.Min.X + (self.Inner.Dx() / 2) - int(float64(len(label))/2)
labelYCoordinate := self.Inner.Min.Y + ((self.Inner.Dy() - 1) / 2)
if labelYCoordinate < self.Inner.Max.Y {
for i, char := range label {
style := self.LabelStyle
if labelXCoordinate+i+1 <= self.Inner.Min.X+barWidth {
style = NewStyle(self.BarColor, ColorClear, ModifierReverse)
}
buf.SetCell(NewCell(char, style), image.Pt(labelXCoordinate+i, labelYCoordinate))
}
}
}
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