// NewActivityBar returns an ActivityBar widget.
// maxValue: helps determines drawn data height; must
// be greater than 0.0, otherwise set to 1.0
// data: data slice to use to render
func NewActivityBar(parent ui.Drawer, name string, maxValue float64, data []float64) *ActivityBar {
self := &ActivityBar{
ui.NewElement(parent, name),
maxValue,
data,
color.NewTween(color.Gray13, color.Red1, 250*time.Millisecond),
}
self.AddMouseEnterCB(func(b bool) {
if b {
self.tween = color.NewTween(color.Gray13, color.Red1, 250*time.Millisecond)
self.tween.Start()
} else {
c := self.tween.Color()
self.tween = color.NewTween(c, color.Gray13, 250*time.Millisecond)
self.tween.Start()
}
})
self.DrawCB = func(ctx vg.Context) {
x, y, w, h := self.Bounds()
barw := 5.0 // width of the bar
sepw := 1.0
totalw := (barw + sepw)
leftover := w - (math.Floor(w/totalw) * totalw)
x += leftover / 2
w -= 2 + totalw
c := self.tween.Color()
l := float64(len(self.Data))
if l == 0 {
return
}
maxcount := w / totalw
s := 0
if l > maxcount {
s = int(l - 1 - maxcount)
}
iy := y + h
for i := s; i < len(self.Data); i++ {
v := self.Data[i]
ctx.BeginPath()
ix := math.Floor(x + (float64(i-s) * totalw))
ih := math.Floor(iy - (h * (v / self.MaxValue)))
ctx.FillColor(c)
ax := ix + sepw
bx := ix + barw
ctx.MoveTo(ax, iy)
ctx.LineTo(ax, ih)
ctx.LineTo(bx, ih)
ctx.LineTo(bx, iy)
ctx.Fill()
}
}
return self
}
func NewLineChart(parent ui.Drawer, name string, mdl LineChartModeler) *LineChart {
self := &LineChart{
ui.NewElement(parent, name),
mdl,
Title{Model: mdl, FontSize: 17},
Palette[CHART_BACKGROUND],
Palette[CHART_BACKGROUND],
true,
}
return self
}
func New(parent ui.Drawer, name, text string) *Text {
tokens := strings.Fields(text)
self := &Text{
ui.NewElement(parent, name),
ui.NewScroll(),
text,
tokens,
vg.FONT_DEFAULT,
21,
LEFT,
nil,
make([]*ui.Rectangle, len(tokens)),
make([]*ui.Rectangle, len(tokens)),
}
self.CornerRadius = 0
self.AddScrollCB(func(xoff, yoff float64) {
vertical := self.YOffset()
vertical -= yoff * self.Increment()
if vertical < 0 {
vertical = 0
}
self.SetYOffset(vertical)
})
X, Y := 0.0, 0.0
self.AddMousePositionCB(func(x, y float64) {
X, Y = x, y
})
self.AddMouseClickCB(func(state ui.MouseButtonState) {
fmt.Println("CLICK!")
xx, yy, w, h := self.Bounds()
self.forEachDrawnToken(xx, yy, w, h,
func(i int, x, y, lineHeight float64, bounds *ui.Rectangle, ctx *vg.Context) {
r := ui.Rectangle{ui.Position{x, y - lineHeight/2}, ui.Size{bounds.Size.W, bounds.Size.H + lineHeight}}
if r.Contains(X, Y) {
fmt.Println(tokens[i])
}
},
)
})
self.Background = White
self.Foreground = Gray10
return self
}
func NewProgressBar(parent ui.Drawer, name string, max float64) *ProgressBar {
self := &ProgressBar{
ui.NewElement(parent, name),
0,
max,
}
self.Element.ClickBackground = Blue4
self.DrawCB = func(ctx vg.Context) {
x, y, w, h := self.Bounds()
fg := ctx.BoxGradient(x, y, w, h/3, h/2, h, self.ClickBackground, self.ClickBackground)
ctx.BeginPath()
ctx.RoundedRect(x+1, y+1, (w-2)*(self.Value/self.Max), h-2, self.CornerRadius)
ctx.FillPaint(fg)
ctx.Fill()
}
return self
}
func NewButton(parent ui.Drawer, name, text string) *Button {
self := &Button{
ui.NewElement(parent, name),
text,
}
self.DrawCB = func(ctx vg.Context) {
x, y, w, h := self.Bounds()
ctx.Scissor(x, y, w, h)
ctx.FillColor(self.Foreground)
ctx.TextAlign(vg.ALIGN_CENTER | vg.ALIGN_MIDDLE)
ctx.SetFontSize(35)
ctx.FindFont(vg.FONT_DEFAULT)
ctx.WrappedText(x, y+h/2, w, self.Text)
ctx.ResetScissor()
}
return self
}
func NewBartext(parent ui.Drawer, name, text string) *bartext {
self := &bartext{
ui.NewElement(parent, name),
text,
}
self.SetCommonBackground(color.Purple2)
self.DrawCB = func(ctx vg.Context) {
x, y, w, h := self.Bounds()
ctx.Scissor(x, y, w, h)
ctx.FillColor(self.Foreground)
ctx.SetFontSize(40)
ctx.FindFont(vg.FONT_DEFAULT)
ctx.TextAlign(vg.ALIGN_CENTER | vg.ALIGN_RIGHT)
ctx.Text(x+w, y+h/1.5, self.Text)
ctx.ResetScissor()
}
return self
}