Merge pull request #35 from Matt3o12/gauge-label
Gauge custom percentage label
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commit
c7e9e645d4
@ -1,4 +1,4 @@
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# termui [![Build Status](https://travis-ci.org/gizak/termui.svg)](https://travis-ci.org/gizak/termui) [![Doc Status](https://godoc.org/github.com/gizak/termui?status.png)](https://godoc.org/github.com/gizak/termui)
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# termui [![Build Status](https://travis-ci.org/gizak/termui.svg?branch=master)](https://travis-ci.org/gizak/termui) [![Doc Status](https://godoc.org/github.com/gizak/termui?status.png)](https://godoc.org/github.com/gizak/termui)
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---
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@ -47,7 +47,16 @@ func main() {
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g1.Border.FgColor = termui.ColorWhite
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g1.Border.LabelFgColor = termui.ColorMagenta
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termui.Render(g0, g1, g2)
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g3 := termui.NewGauge()
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g3.Percent = 50
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g3.Width = 50
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g3.Height = 3
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g3.Y = 11
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g3.Border.Label = "Gauge with custom label"
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g3.Label = "{{percent}}% (100MBs free)"
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g3.LabelAlign = termui.AlignRight
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termui.Render(g0, g1, g2, g3)
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<-termui.EventCh()
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}
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52
gauge.go
52
gauge.go
@ -4,7 +4,10 @@
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package termui
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import "strconv"
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import (
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"strconv"
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"strings"
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)
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// Gauge is a progress bar like widget.
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// A simple example:
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@ -17,11 +20,24 @@ import "strconv"
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g.BarColor = termui.ColorRed
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g.PercentColor = termui.ColorBlue
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*/
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// Align is the position of the gauge's label.
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type Align int
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// All supported positions.
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const (
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AlignLeft Align = iota
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AlignCenter
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AlignRight
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)
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type Gauge struct {
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Block
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Percent int
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BarColor Attribute
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PercentColor Attribute
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Label string
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LabelAlign Align
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}
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// NewGauge return a new gauge with current theme.
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@ -29,7 +45,11 @@ func NewGauge() *Gauge {
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g := &Gauge{
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Block: *NewBlock(),
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PercentColor: theme.GaugePercent,
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BarColor: theme.GaugeBar}
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BarColor: theme.GaugeBar,
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Label: "{{percent}}%",
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LabelAlign: AlignCenter,
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}
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g.Width = 12
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g.Height = 5
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return g
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@ -39,14 +59,8 @@ func NewGauge() *Gauge {
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func (g *Gauge) Buffer() []Point {
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ps := g.Block.Buffer()
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w := g.Percent * g.innerWidth / 100
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s := strconv.Itoa(g.Percent) + "%"
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rs := str2runes(s)
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prx := g.innerX + g.innerWidth/2 - 1
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pry := g.innerY + g.innerHeight/2
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// plot bar
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w := g.Percent * g.innerWidth / 100
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for i := 0; i < g.innerHeight; i++ {
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for j := 0; j < w; j++ {
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p := Point{}
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@ -62,13 +76,28 @@ func (g *Gauge) Buffer() []Point {
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}
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// plot percentage
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s := strings.Replace(g.Label, "{{percent}}", strconv.Itoa(g.Percent), -1)
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pry := g.innerY + g.innerHeight/2
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rs := str2runes(s)
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var pos int
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switch g.LabelAlign {
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case AlignLeft:
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pos = 0
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case AlignCenter:
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pos = (g.innerWidth - strWidth(s)) / 2
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case AlignRight:
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pos = g.innerWidth - strWidth(s)
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}
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for i, v := range rs {
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p := Point{}
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p.X = prx + i
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p.X = 1 + pos + i
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p.Y = pry
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p.Ch = v
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p.Fg = g.PercentColor
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if w > g.innerWidth/2-1+i {
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if w > pos+i {
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p.Bg = g.BarColor
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if p.Bg == ColorDefault {
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p.Bg |= AttrReverse
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@ -77,6 +106,7 @@ func (g *Gauge) Buffer() []Point {
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} else {
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p.Bg = g.Block.BgColor
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}
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ps = append(ps, p)
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}
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return g.Block.chopOverflow(ps)
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