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feat(tracker/gioui): switches just clickable & cycle between states

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This commit is contained in:
5684185+vsariola@users.noreply.github.com
2025-07-08 23:01:55 +03:00
parent 452a4cf04f
commit 8e5f3098a4
1 changed files with 32 additions and 34 deletions
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64
tracker/gioui/param.go
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@ -164,29 +164,6 @@ func (p ParamWidget) Layout(gtx C) D {
}
func (s *ParamState) update(gtx C, param tracker.Parameter, scroll bool) {
for {
p, ok := s.drag.Update(gtx.Metric, gtx.Source, gesture.Both)
if !ok {
break
}
switch p.Kind {
case pointer.Press:
s.dragStartPt = p.Position
s.dragStartVal = param.Value()
case pointer.Drag:
// update the value based on the drag amount
m := param.Range()
d := p.Position.Sub(s.dragStartPt)
speed := gtx.Dp(512)
if p.Modifiers.Contain(key.ModCtrl) {
speed = gtx.Dp(128)
}
amount := float32(d.X-d.Y) / float32(speed)
newValue := int(float32(s.dragStartVal) + amount*float32(m.Max-m.Min))
param.SetValue(newValue)
s.tipArea.Appear(gtx.Now)
}
}
for scroll {
e, ok := gtx.Event(pointer.Filter{
Target: s,
@ -223,6 +200,29 @@ func Knob(v tracker.Parameter, th *Theme, state *ParamState, hint string, scroll
func (k *KnobWidget) Layout(gtx C) D {
k.State.update(gtx, k.Value, k.Scroll)
for {
p, ok := k.State.drag.Update(gtx.Metric, gtx.Source, gesture.Both)
if !ok {
break
}
switch p.Kind {
case pointer.Press:
k.State.dragStartPt = p.Position
k.State.dragStartVal = k.Value.Value()
case pointer.Drag:
// update the value based on the drag amount
m := k.Value.Range()
d := p.Position.Sub(k.State.dragStartPt)
speed := gtx.Dp(512)
if p.Modifiers.Contain(key.ModCtrl) {
speed = gtx.Dp(128)
}
amount := float32(d.X-d.Y) / float32(speed)
newValue := int(float32(k.State.dragStartVal) + amount*float32(m.Max-m.Min))
k.Value.SetValue(newValue)
k.State.tipArea.Appear(gtx.Now)
}
}
for k.Scroll {
ev, ok := gtx.Event(pointer.Filter{Target: k.State, Kinds: pointer.Press})
if !ok {
@ -346,21 +346,19 @@ func (s *SwitchWidget) Layout(gtx C) D {
break
}
if pe, ok := ev.(pointer.Event); ok && pe.Kind == pointer.Press {
curVal := s.Value.Value()
delta := 0
if pe.Buttons == pointer.ButtonPrimary {
if curVal >= 1 {
s.Value.SetValue(0)
} else {
s.Value.SetValue(curVal + 1)
}
delta = 1
}
if pe.Buttons == pointer.ButtonSecondary {
if curVal <= -1 {
s.Value.SetValue(0)
} else {
s.Value.SetValue(curVal - 1)
delta = -1
}
r := s.Value.Range()
if r.Max < r.Min {
continue
}
newVal := mod(s.Value.Value()+delta-r.Min, r.Max-r.Min+1) + r.Min
s.Value.SetValue(newVal)
s.State.tipArea.Appear(gtx.Now)
}
}