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

display/swatch.go

@@ -0,0 +1,28 @@
+package display
+
+import (
+	"github.com/egoist/mygo/ui"
+
+	"git.zacharyzhang.com/ZacharyZhang-NY/8bitMyGoUI/pixel"
+)
+
+type SwatchOptions struct {
+	// Columns is zero for 4.
+	Columns int
+}
+
+// Swatch shows the active palette's sixteen slots with names.
+func Swatch(c *ui.Context, o SwatchOptions) *ui.Element {
+	k := pixel.K(c)
+	cols := orDef("Swatch Columns", o.Columns, 4)
+	cell := 14 + pixel.Measure("AccentLit")
+	return ui.Row(c).Wrap().Width(k.D(cols * (cell + 4))).Gap(k.D(4)).Role(ui.RoleList).Label(k.Palette().Name).Children(func() {
+		for s := range pixel.Slot(pixel.Slots) {
+			ui.Box(c).Size(k.D(cell), k.D(pixel.LineHeight)).Role(ui.RoleListItem).Label(s.String()).Draw(func(p *ui.Painter, r ui.Rect) {
+				g := k.Canvas(p, r)
+				g.Frame(0, 2, 12, 12, pixel.Flat, s)
+				g.Text(14, 0, s.String(), pixel.Ink, 1)
+			})
+		}
+	})
+}