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

display/statusdot.go

@@ -0,0 +1,48 @@
+package display
+
+import (
+	"fmt"
+
+	"github.com/egoist/mygo/ui"
+
+	"git.zacharyzhang.com/ZacharyZhang-NY/8bitMyGoUI/pixel"
+)
+
+type Status uint8
+
+const (
+	Online Status = iota
+	Away
+	Busy
+	Offline
+)
+
+var (
+	statusSlots = [...]pixel.Slot{Online: pixel.Good, Away: pixel.Warn, Busy: pixel.Bad, Offline: pixel.Faint}
+	statusKeys  = [...]string{Online: "online", Away: "away", Busy: "busy", Offline: "offline"}
+)
+
+type StatusDotOptions struct {
+	// Live makes an online dot blink.
+	Live  bool
+	Label string
+}
+
+// StatusDot is a 7-dot status light.
+func StatusDot(c *ui.Context, s Status, o StatusDotOptions) *ui.Element {
+	if int(s) >= len(statusSlots) {
+		panic(fmt.Sprintf("display: unknown Status %d", s))
+	}
+	k := pixel.K(c)
+	label := o.Label
+	if label == "" {
+		label = k.Msg(statusKeys[s])
+	}
+	return art(c, k, label, 7, 7, func(g pixel.Canvas) {
+		g.Disc(3, 3, 3, pixel.Edge)
+		if !(o.Live && s == Online && g.Step(2)%2 == 1) {
+			g.Disc(3, 3, 2, statusSlots[s])
+			g.Dot(2, 2, pixel.Lit)
+		}
+	})
+}