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

display/icon.go

@@ -0,0 +1,20 @@
+package display
+
+import (
+	"github.com/egoist/mygo/ui"
+
+	"git.zacharyzhang.com/ZacharyZhang-NY/8bitMyGoUI/pixel"
+)
+
+type IconOptions struct {
+	Slot  pixel.Slot
+	Scale int
+	// Label names the icon; empty hides it.
+	Label string
+}
+
+// Icon draws a sprite at ×1–×4 in an ink slot.
+func Icon(c *ui.Context, sp *pixel.Sprite, o IconOptions) *ui.Element {
+	k, sc := pixel.K(c), scale(o.Scale)
+	return art(c, k, o.Label, sp.W*sc, sp.H*sc, func(g pixel.Canvas) { g.Sprite(0, 0, sp, 0, o.Slot, sc) })
+}