ZacharyZhang-NY
5605d785de
Fifteen shop components: PriceTag, Wallet, ShopItem, Cart, Receipt, Checkout, CurrencyConvert, SaleBadge, Quantity, PricingTiers, Coupon, DailyReward, BidTicker, TradeWindow and VendingMachine. Receipt prints dot by dot with feed holes and a torn edge; Coupon cuts real notches; SaleBadge is a sixteen-point starburst; VendingMachine sells A1 to D4 by code and drops the snack into its tray. Sums are checked against overflow, TradeWindow withdraws both confirms on any change to an offer, and a disabled Checkout veils its inert content. text.Odometer now counts digits as text, steps at 15 fps as S5 asks, draws exact digits at rest and lands rolls that floats would stall.
88 lines
2.4 KiB
Go
88 lines
2.4 KiB
Go
package shop
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import (
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"log/slog"
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"math"
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"time"
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"github.com/egoist/mygo/ui"
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"git.zacharyzhang.com/ZacharyZhang-NY/8bitMyGoUI/input"
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"git.zacharyzhang.com/ZacharyZhang-NY/8bitMyGoUI/pixel"
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)
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type CouponOptions struct {
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Disabled bool
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}
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type CouponResult struct {
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Element *ui.Element
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Copied bool
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}
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type couponKey struct{}
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// Coupon is a notched ticket: a deal, a code, COPY.
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func Coupon(c *ui.Context, title, code string, o CouponOptions) CouponResult {
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k := pixel.K(c)
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if code == "" || title == "" {
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panic("shop: Coupon needs a code and a title")
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}
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var res CouponResult
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row := ui.Row(c).Padding(k.D(6), k.D(14)).Gap(k.D(8)).AlignItems(ui.Center).Role(ui.RoleGroup).Label(title)
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res.Element = row.AlignSelf(ui.Start).Draw(func(p *ui.Painter, r ui.Rect) {
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g := k.Canvas(p, r)
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// Row by row, leaving round notches at both ends.
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for y := range g.H {
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in := 0
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if dy := y - g.H/2; dy*dy < 36 {
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in = int(math.Sqrt(float64(36 - dy*dy)))
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}
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g.Rect(in, y, g.W-2*in, 1, pixel.Face)
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g.Dot(in, y, pixel.Edge)
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g.Dot(g.W-1-in, y, pixel.Edge)
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}
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g.HLine(0, 0, g.W, pixel.Edge)
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g.HLine(0, g.H-1, g.W, pixel.Edge)
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}).Children(func() {
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ui.Column(c).Gap(k.D(2)).Children(func() {
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pixel.Text(c, title, pixel.TextOptions{Slot: pixel.Bad, Scale: 2})
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ui.Box(c).Size(k.D(pixel.Measure(code)+10), k.D(pixel.LineHeight+4)).Role(ui.RoleText).Label(code).Draw(func(p *ui.Painter, r ui.Rect) {
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g := k.Canvas(p, r)
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for x := 0; x < g.W; x += 3 {
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g.Rect(x, 0, 2, 1, pixel.Edge)
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g.Rect(x, g.H-1, 2, 1, pixel.Edge)
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}
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for y := 0; y < g.H; y += 3 {
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g.Rect(0, y, 1, 2, pixel.Edge)
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g.Rect(g.W-1, y, 1, 2, pixel.Edge)
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}
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g.Text(5, 2, code, pixel.Ink, 1)
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})
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})
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// A torn-here line between the deal and the button.
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ui.Box(c).Size(k.D(1), k.D(36)).Draw(func(p *ui.Painter, r ui.Rect) {
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g := k.Canvas(p, r)
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for y := 0; y < g.H; y += 4 {
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g.Rect(0, y, 1, 2, pixel.Shade)
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}
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})
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e := ui.Box(c)
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at := ui.Local(e, couponKey{}, func() time.Time { return time.Time{} })
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// The button says COPIED! for two seconds.
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label := k.Msg("copy")
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if k.Since(c, *at, 1, 2) < 2 {
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label = k.Msg("copied")
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}
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e.Children(func() {
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if input.Button(c, label, input.ButtonOptions{Size: input.Small, Disabled: o.Disabled}).Clicked {
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c.WriteClipboard(code)
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*at, res.Copied = k.Now(), true
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// The code is a key; logs never see it.
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slog.Debug("8bit: coupon copied", "title", title)
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}
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})
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})
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return res
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}
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