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progress.go
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progress.go
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package x11ui
import (
"fmt"
"image"
"image/color"
"log"
"github.com/llgcode/draw2d/draw2dkit"
"github.com/BurntSushi/xgbutil"
"github.com/BurntSushi/xgbutil/xgraphics"
"github.com/llgcode/draw2d/draw2dimg"
"github.com/lucasb-eyer/go-colorful"
)
type ProgressBar struct {
p *Window //ParentWindow
me *Window
// Custom properties
dispScaler float64
val float64
bgColor color.Color
barColor color.Color
txtColor color.Color
fmtString string
margin float64
border float64
ShowGrid bool
NGrids float64
}
func NewProgressBar(title string, p *Window, dims ...int) *ProgressBar {
if p == nil {
log.Fatal("Cannot Create Widget without Application")
}
pbar := new(ProgressBar)
pbar.me = newWindow(p.Window.X, p, title, dims...)
pbar.SetDisplayScale(100.0)
pbar.ResetFmtString()
pbar.loadTheme()
// pbar.SetValue(0.5)
return pbar
}
func (p *ProgressBar) X() *xgbutil.XUtil {
return p.me.X()
}
func (p *ProgressBar) loadTheme() {
p.bgColor = systemBG
p.barColor = colorful.LinearRgb(.4, .6, .1)
p.txtColor = color.RGBA{20, 200, 30, 200}
}
func (p *ProgressBar) SetBackGroundColor(bc color.Color) {
p.bgColor = bc
}
func (p *ProgressBar) SetBarColor(bc color.Color) {
p.barColor = bc
}
func (p *ProgressBar) SetTextColor(tc color.Color) {
p.txtColor = tc
}
func (p *ProgressBar) SetFmtString(s string) {
p.fmtString = s
}
func (p *ProgressBar) FmtString() string {
return p.fmtString
}
func (p *ProgressBar) ResetFmtString() {
p.fmtString = "%3.0f%%"
}
// return the value in the scale 0 to 1
func (p ProgressBar) Value() float64 {
return p.val
}
func (p *ProgressBar) SetDisplayScale(s float64) {
p.dispScaler = s
}
// Sets the value in the fraction 0 to 1
func (p *ProgressBar) SetValue(v float64) {
p.val = v
p.reDrawBar()
}
func (p *ProgressBar) Parent() *Window {
return p.p
}
func (p *ProgressBar) Widget() *Window {
return p.me
}
func (p *ProgressBar) reDrawBar() {
/// ignoring widgetState
p.drawBackground(StateNormal)
}
func (p *ProgressBar) SetBorderWidth(bw float64) {
p.border = bw
}
func (p *ProgressBar) Margin() float64 {
return p.margin
}
func (p *ProgressBar) SetMargin(m float64) {
p.margin = m
}
func (p *ProgressBar) drawBackground(s WidgetState) {
r := p.me.Rect
r.MoveTo(0, 0)
r.ImageRect()
dest := image.NewRGBA(r.ImageRect())
gc := draw2dimg.NewGraphicContext(dest)
// bg := colorful.LinearRgb(.025, .025, .025)
switch s {
case StateNormal, StateReleased:
gc.SetFillColor(color.RGBA{0x20, 0x20, 0x20, 20})
gc.SetStrokeColor(systemFG)
case StateHovered:
gc.SetFillColor(color.RGBA{0x35, 0x20, 0x20, 20})
gc.SetStrokeColor(systemFG)
case StatePressed:
gc.SetFillColor(color.RGBA{0x20, 0x30, 0x20, 20})
gc.SetStrokeColor(systemFG)
case StateSpecial:
gc.SetFillColor(color.RGBA{0x20, 0x80, 0x20, 0x80})
gc.SetStrokeColor(systemFG)
}
// // gc.SetLineJoin(draw2d.RoundJoin)
// // gc.Rotate(math.Pi / 4.0)
WW := float64(r.Width)
HH := float64(r.Height)
// Draw Background
gc.SetLineWidth(p.border)
gc.SetFillColor(p.bgColor)
draw2dkit.Rectangle(gc, 0, 0, WW, HH)
gc.FillStroke()
if p.val > 0 {
// Draw the BAR
NSegments := 1.0
ww := float64(r.Width) * p.val
margin := p.margin
ww = ww - margin
hh := HH - margin
gc.SetLineWidth(0)
sw := (ww - (NSegments-1)*margin) / NSegments
gc.SetFillColor(p.barColor)
// for i := 0.0; i < NSegments; i++ {
draw2dkit.Rectangle(gc, margin, margin, sw, hh)
gc.FillStroke()
// gc.Stroke()
/// Draw Grid Lines
if p.ShowGrid && p.NGrids > 1 {
NGrids := p.NGrids
GridWidth := (WW - 2*margin) / NGrids
lc, ok := p.barColor.(color.RGBA)
if ok {
lc.A = 10
gc.SetStrokeColor(lc)
}
xpos := margin
gc.SetLineWidth(1)
for i := 0.0; i < NGrids; i++ {
if xpos < ww {
gc.MoveTo(xpos, margin)
gc.LineTo(xpos, hh)
xpos += GridWidth
gc.Close()
gc.Stroke()
}
}
}
// }
}
// gc.SetFillColor(color.RGBA{130, 120, 30, 110})
// gc.SetStrokeColor(color.RGBA{30, 120, 130, 110})
// draw2dkit.Circle(gc, 250, 10, 30)
// gc.FillStroke()
// c := color.RGBA{200, 200, 200, 255}
// gc.SetStrokeColor(image.White)
// c := color.RGBA{200, 200, 200, 255}
gc.SetFillColor(p.txtColor)
gc.SetLineWidth(0)
cx, cy := r.Center()
str := fmt.Sprintf(p.fmtString, (p.val * p.dispScaler))
x0, y0, w0, h0 := gc.GetStringBounds(str)
// log.Println("Required dimension for string ", x0, y0, w0, h0, cx, cy)
tx, ty := float64(cx)-w0/2.0-x0, float64(cy)-h0/2.0-y0/2.0
// gc.StrokeStringAt(str, tx, ty)
gc.FillStringAt(str, tx, ty)
// gc.FillStroke()
gc.Close()
g := xgraphics.NewConvert(p.me.X(), dest)
// w.drawLabel(g, w.title)
g.XSurfaceSet(p.me.Id)
g.XDraw()
g.XPaintRects(p.me.Id, r.ImageRect())
// return g
// return g
}