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rui/demo/transitionDemo.go

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package main
import (
"github.com/anoshenko/rui"
)
const transitionDemoText = `
ListLayout {
width = 100%, height = 100%, orientation = vertical, padding = 12px,
content = [
"ease",
View { id = bar1, width = 20%, style = transitionBar },
"ease-in",
View { id = bar2, width = 20%, style = transitionBar },
"ease-out",
View { id = bar3, width = 20%, style = transitionBar },
"ease-in-out",
View { id = bar4, width = 20%, style = transitionBar },
"linear",
View { id = bar5, width = 20%, style = transitionBar },
"steps(5)",
View { id = bar6, width = 20%, style = transitionBar },
"cubic-bezier(0.1, -0.6, 0.2, 0)",
View { id = bar7, width = 20%, style = transitionBar },
Button { id = startTransition, content = "Start" }
]
}`
func createTransitionDemo(session rui.Session) rui.View {
view := rui.CreateViewFromText(session, transitionDemoText)
if view == nil {
return nil
}
bars := map[string]string{
"bar1": rui.EaseTiming,
"bar2": rui.EaseInTiming,
"bar3": rui.EaseOutTiming,
"bar4": rui.EaseInOutTiming,
"bar5": rui.LinearTiming,
"bar6": rui.StepsTiming(5),
"bar7": rui.CubicBezierTiming(0.1, -0.6, 0.2, 0),
}
rui.Set(view, "startTransition", rui.ClickEvent, func(button rui.View) {
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for id, timing := range bars {
animation := rui.NewAnimation(rui.Params{
rui.Duration: 2,
rui.TimingFunction: timing,
})
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if bar := rui.ViewByID(view, id); bar != nil {
if rui.GetWidth(bar, "").Value == 100 {
bar.Remove(rui.TransitionEndEvent)
bar.SetAnimated(rui.Width, rui.Percent(20), animation)
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} else {
bar.Set(rui.TransitionEndEvent, func(v rui.View, tag string) {
bar.Remove(rui.TransitionEndEvent)
bar.SetAnimated(rui.Width, rui.Percent(20), animation)
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})
bar.SetAnimated(rui.Width, rui.Percent(100), animation)
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}
}
}
})
return view
}