ZacharyZhang-NYandClaude Opus 5.5
03e1f91706
Elements are now pass-scoped value handles: tests that read bounds after a frame bind a ui.Handle. pixel tells frames apart by the build pass's root, since the Tester clock no longer moves on its own. Fix the regressions the upgrade brought: - Clipboard reads in input handlers go through c.Services(). - MyGo notes an overlay's opener after building it, so AutoFocus inside lost it; pixel.AutoFocus focuses through a Handle, and archtest bans the raw call. Dialogs hand the focus back again. - Elements around a press stay hovered: Tooltip tells a press-given focus by focus arriving under the pointer. - The web host moves the Tester clock with real time, at most 500 ms a call, and gives components the real clock. The gallery's source index also accepts CRLF checkouts. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
103 lines
2.9 KiB
Go
103 lines
2.9 KiB
Go
package shop
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import (
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"fmt"
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"hash/fnv"
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"math"
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"strconv"
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"strings"
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"time"
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"github.com/egoist/mygo/ui"
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"git.zacharyzhang.com/ZacharyZhang-NY/8bitMyGoUI/pixel"
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)
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// ReceiptLine is a bought ware.
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type ReceiptLine struct {
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Name string
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Qty, Price int
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}
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type ReceiptOptions struct {
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// Width is in dots; zero means 180.
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Width int
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// Time prints under the shop; zero prints none.
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Time time.Time
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}
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// Receipt prints lines dot-matrix style, perforated down the sides.
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func Receipt(c *ui.Context, shop string, lines []ReceiptLine, o ReceiptOptions) ui.Element {
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k := pixel.K(c)
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if shop == "" {
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panic("shop: Receipt has no shop name")
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}
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w, total := pixel.Or("Receipt Width", o.Width, 180), 0
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rows := make([][2]string, len(lines))
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for i, l := range lines {
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amount("Receipt price", l.Price)
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if l.Name == "" || l.Qty < 1 || l.Price > (math.MaxInt-total)/l.Qty {
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panic(fmt.Sprintf("shop: Receipt line %q, %d at %d", l.Name, l.Qty, l.Price))
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}
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total += l.Qty * l.Price
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rows[i] = [2]string{fmt.Sprintf("%d×%s", l.Qty, l.Name), strconv.Itoa(l.Qty * l.Price)}
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}
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sum, thanks := strconv.Itoa(total), k.Msg("thank_you")
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said := make([]string, len(rows))
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for i, r := range rows {
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said[i] = r[0] + " " + r[1]
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}
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h := pixel.LineHeight*(len(rows)+5) + 24
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return ui.Box(c).Size(k.D(w), k.D(h)).Role(ui.RoleImage).Label(shop).Description(strings.Join(append(said, k.Msg("total")+" "+sum), ", ")).Draw(func(p *ui.Painter, r ui.Rect) {
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g := k.Canvas(p, r)
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// Paper, with feed holes punched down both sides.
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g.Rect(0, 0, w, h-4, pixel.Lit)
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for y := 4; y < h-8; y += 8 {
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g.Rect(3, y, 2, 2, pixel.Shade)
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g.Rect(w-5, y, 2, 2, pixel.Shade)
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}
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// A torn edge of teeth along the bottom.
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for x := 0; x < w; x += 4 {
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g.Rect(x, h-4, 2, 2, pixel.Lit)
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g.Rect(x+1, h-2, 1, 2, pixel.Lit)
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}
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line := func(y int, l, rt string, ink pixel.Slot) {
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l = pixel.Wrap(l, w-28-pixel.Measure(rt), 1)[0]
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g.Text(10, y, l, ink, 1)
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g.Text(w-10-pixel.Measure(rt), y, rt, ink, 1)
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// Dot leaders run from the name to the price.
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for x := 12 + pixel.Measure(l); x < w-12-pixel.Measure(rt); x += 3 {
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g.Dot(x, y+12, pixel.Faint)
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}
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}
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y := 4
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g.Text((w-pixel.Measure(shop))/2, y, shop, pixel.Ink, 1)
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if !o.Time.IsZero() {
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y += pixel.LineHeight
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d := o.Time.Format("2006-01-02 15:04")
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g.Text((w-pixel.Measure(d))/2, y, d, pixel.Faint, 1)
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}
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y += pixel.LineHeight + 2
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for x := 10; x < w-10; x += 4 {
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g.Rect(x, y, 2, 1, pixel.Shade)
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}
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y += 3
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for _, rw := range rows {
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line(y, rw[0], rw[1], pixel.Ink)
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y += pixel.LineHeight
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}
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line(y+2, k.Msg("total"), sum, pixel.Ink)
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y += pixel.LineHeight + 4
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g.Text((w-pixel.Measure(thanks))/2, y, thanks, pixel.Ink, 1)
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// A barcode drawn from the total, for show.
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hs := fnv.New32a()
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hs.Write([]byte(sum))
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bits := hs.Sum32()
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for i, x := 0, (w-64)/2; i < 32; i, x = i+1, x+2 {
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if bits>>i&1 == 1 || i%8 == 0 {
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g.Rect(x, y+pixel.LineHeight+2, 1, 10, pixel.Ink)
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}
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}
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})
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}
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