Add display components 041-065; move Icon into display; QR via rsc.io/qr

display/badge.go

@@ -0,0 +1,39 @@
+package display
+
+import (
+	"github.com/egoist/mygo/ui"
+
+	"git.zacharyzhang.com/ZacharyZhang-NY/8bitMyGoUI/pixel"
+)
+
+type BadgeOptions struct {
+	// Text replaces the count.
+	Text string
+	// Slot is the fill; zero means Bad.
+	Slot pixel.Slot
+}
+
+// Badge shows n, capped at 99+, or text.
+func Badge(c *ui.Context, n int, o BadgeOptions) *ui.Element {
+	k := pixel.K(c)
+	s := o.Text
+	if s == "" {
+		s = itoa(n)
+		if n > 99 {
+			s = "99+"
+		}
+	}
+	fill := slotOr(o.Slot, pixel.Bad)
+	if !pixel.MicroOK(s) {
+		w := pixel.Measure(s) + 6
+		return art(c, k, s, w, pixel.LineHeight+1, func(g pixel.Canvas) {
+			g.Frame(0, 0, w, pixel.LineHeight+1, pixel.Notched, fill)
+			g.Text(3, 0, s, pixel.AccentInk, 1)
+		})
+	}
+	w := max(pixel.MicroWidth(s)+6, 9)
+	return art(c, k, s, w, 9, func(g pixel.Canvas) {
+		g.Frame(0, 0, w, 9, pixel.Notched, fill)
+		g.Micro((w-pixel.MicroWidth(s))/2, 2, s, pixel.AccentInk, 1)
+	})
+}