Add feedback components 106-130; inert scope, focus return, two-step deploy

feedback/achievement.go

@@ -0,0 +1,46 @@
+package feedback
+
+import (
+	"github.com/egoist/mygo/ui"
+
+	"git.zacharyzhang.com/ZacharyZhang-NY/8bitMyGoUI/icon"
+	"git.zacharyzhang.com/ZacharyZhang-NY/8bitMyGoUI/pixel"
+)
+
+type AchievementOptions struct {
+	// Cue shows the card each time it changes.
+	Cue int
+	// Width is in dots; zero means 200.
+	Width int
+}
+
+// Achievement slides a trophy card in, holds it, then out.
+func Achievement(c *ui.Context, title string, o AchievementOptions) *ui.Element {
+	k := pixel.K(c)
+	w := pixel.Or("Achievement Width", o.Width, 200)
+	e := ui.Box(c)
+	// Ten steps a second; in by 5, gone by 40.
+	step := since(c, k, cue(e, k, o.Cue), 10, 40)
+	if step >= 40 {
+		return e
+	}
+	out := 0
+	switch {
+	case k.Reduce():
+	case step < 5:
+		out = 5 - step
+	case step >= 35:
+		out = step - 34
+	}
+	head := k.Msg("achievement")
+	return e.Role(ui.RoleStatus).Label(head+" "+title).Size(k.D(w), k.D(40)).Draw(func(p *ui.Painter, r ui.Rect) {
+		g := k.Canvas(p, r)
+		x := out * w / 5
+		g.Clip(0, 0, g.W, g.H, func() {
+			g.Frame(x, 0, w, 40, pixel.Window, pixel.Face)
+			g.Sprite(x+6, 8, icon.Trophy, 0, pixel.Warn, 2)
+			g.Text(x+36, 4, head, pixel.Faint, 1)
+			g.Text(x+36, 20, title, pixel.Ink, 1)
+		})
+	})
+}