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164 lines
4.0 KiB
164 lines
4.0 KiB
3 years ago
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package main
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import (
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"log"
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"math"
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"math/rand"
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"os"
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"time"
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"gioui.org/app"
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"gioui.org/example/outlay/fan/playing"
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xwidget "gioui.org/example/outlay/fan/widget"
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"gioui.org/example/outlay/fan/widget/boring"
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"gioui.org/font/gofont"
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"gioui.org/io/system"
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"gioui.org/layout"
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"gioui.org/op"
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"gioui.org/unit"
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"gioui.org/widget"
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"gioui.org/widget/material"
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"gioui.org/x/outlay"
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)
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type (
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C = layout.Context
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D = layout.Dimensions
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)
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func main() {
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go func() {
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w := app.NewWindow()
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if err := loop(w); err != nil {
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log.Fatal(err)
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}
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os.Exit(0)
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}()
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app.Main()
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}
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func genCards(th *material.Theme) []boring.HoverCard {
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cards := []boring.HoverCard{}
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max := 30
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deck := playing.Deck()
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rand.Shuffle(len(deck), func(i, j int) {
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deck[i], deck[j] = deck[j], deck[i]
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})
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for i := 0; i < max; i++ {
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cards = append(cards, boring.HoverCard{
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CardStyle: boring.CardStyle{
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Card: deck[i],
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Theme: th,
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Height: unit.Dp(200),
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},
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HoverState: &xwidget.HoverState{},
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})
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}
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return cards
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}
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func loop(w *app.Window) error {
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th := material.NewTheme(gofont.Collection())
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fan := outlay.Fan{
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Animation: outlay.Animation{
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Duration: time.Second / 4,
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},
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WidthRadians: math.Pi,
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OffsetRadians: 2 * math.Pi,
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}
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numCards := widget.Float{}
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numCards.Value = 1.0
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var width, offset, radius widget.Float
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var useRadius widget.Bool
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cardChildren := []outlay.FanItem{}
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cards := genCards(th)
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for i := range cards {
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cardChildren = append(cardChildren, outlay.Item(i == 5, cards[i].Layout))
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}
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var ops op.Ops
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for {
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e := <-w.Events()
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switch e := e.(type) {
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case system.DestroyEvent:
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return e.Err
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case system.FrameEvent:
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gtx := layout.NewContext(&ops, e)
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for i := range cards {
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cardChildren[i].Elevate = cards[i].Hovering(gtx)
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}
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visibleCards := int(math.Round(float64(numCards.Value*float32(len(cardChildren)-1)))) + 1
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fan.OffsetRadians = offset.Value * 2 * math.Pi
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fan.WidthRadians = width.Value * 2 * math.Pi
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if useRadius.Changed() || radius.Changed() {
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if useRadius.Value {
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r := cards[0].Height.Scale(radius.Value * 2)
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fan.HollowRadius = &r
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} else {
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fan.HollowRadius = nil
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}
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}
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layout.Flex{Axis: layout.Vertical}.Layout(gtx,
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layout.Rigid(func(gtx C) D {
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return layout.Flex{}.Layout(gtx,
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layout.Rigid(func(gtx C) D {
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return material.Body1(th, "1").Layout(gtx)
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}),
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layout.Flexed(1, func(gtx C) D {
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return material.Slider(th, &numCards, 0.0, 1.0).Layout(gtx)
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}),
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layout.Rigid(func(gtx C) D {
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return material.Body1(th, "10").Layout(gtx)
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}),
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)
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}),
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layout.Rigid(func(gtx C) D {
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return layout.Flex{}.Layout(gtx,
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layout.Rigid(func(gtx C) D {
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return material.Body1(th, "width 0").Layout(gtx)
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}),
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layout.Flexed(1, func(gtx C) D {
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return material.Slider(th, &width, 0.0, 1.0).Layout(gtx)
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}),
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layout.Rigid(func(gtx C) D {
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return material.Body1(th, "2pi").Layout(gtx)
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}),
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)
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}),
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layout.Rigid(func(gtx C) D {
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return layout.Flex{}.Layout(gtx,
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layout.Rigid(func(gtx C) D {
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return material.Body1(th, "offset 0").Layout(gtx)
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}),
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layout.Flexed(1, func(gtx C) D {
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return material.Slider(th, &offset, 0.0, 1.0).Layout(gtx)
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}),
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layout.Rigid(func(gtx C) D {
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return material.Body1(th, "2pi").Layout(gtx)
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}),
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)
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}),
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layout.Rigid(func(gtx C) D {
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return layout.Flex{}.Layout(gtx,
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layout.Rigid(func(gtx C) D {
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return material.CheckBox(th, &useRadius, "use").Layout(gtx)
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}),
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layout.Rigid(func(gtx C) D {
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return material.Body1(th, "radius 0%").Layout(gtx)
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}),
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layout.Flexed(1, func(gtx C) D {
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return material.Slider(th, &radius, 0.0, 1.0).Layout(gtx)
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}),
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layout.Rigid(func(gtx C) D {
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return material.Body1(th, "200%").Layout(gtx)
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}),
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)
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}),
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layout.Flexed(1, func(gtx C) D {
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return fan.Layout(gtx, cardChildren[:visibleCards]...)
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}),
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)
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e.Frame(gtx.Ops)
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}
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}
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}
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