Upgrade MyGo to v0.5.5

Elements are now pass-scoped value handles: tests that read bounds
after a frame bind a ui.Handle. pixel tells frames apart by the build
pass's root, since the Tester clock no longer moves on its own.

Fix the regressions the upgrade brought:
- Clipboard reads in input handlers go through c.Services().
- MyGo notes an overlay's opener after building it, so AutoFocus
  inside lost it; pixel.AutoFocus focuses through a Handle, and
  archtest bans the raw call. Dialogs hand the focus back again.
- Elements around a press stay hovered: Tooltip tells a press-given
  focus by focus arriving under the pointer.
- The web host moves the Tester clock with real time, at most 500 ms
  a call, and gives components the real clock.

The gallery's source index also accepts CRLF checkouts.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

gallery/app.go

@@ -3,6 +3,7 @@ package gallery
 import (
 	"log/slog"
 	"strings"
+	"time"
 
 	"github.com/egoist/mygo/ui"
 
@@ -22,6 +23,7 @@ type App struct {
 	query   string
 	search  input.TextInputResult
 	logs    map[string][]string
+	now     func() time.Time
 }
 
 // New starts at path; the boot screen shows first.
@@ -43,8 +45,11 @@ func (a *App) Go(path string) {
 	}
 }
 
+// SetClock gives the components a clock other than the frame's.
+func (a *App) SetClock(now func() time.Time) { a.now = now }
+
 func (a *App) View(c *ui.Context) {
-	pixel.Use(c, pixel.Settings{Palette: pixel.Palettes[a.palette], Dot: Dot, Locale: a.locale})
+	pixel.Use(c, pixel.Settings{Palette: pixel.Palettes[a.palette], Dot: Dot, Locale: a.locale, Now: a.now})
 	if !a.started {
 		a.boot(c)
 		return

gallery/boot.go

@@ -20,7 +20,7 @@ func (a *App) boot(c *ui.Context) {
 		shown = 16
 	}
 	start := shown == 16 && (k.Reduce() || step%12 < 8)
-	shell, base, _ := pixel.Shell(c, func() *ui.Element { return ui.ButtonBase(c).Label("Press start") })
+	shell, base, _ := pixel.Shell(c, func() ui.Element { return ui.ButtonBase(c).Label("Press start") })
 	shell.Fill().Draw(func(p *ui.Painter, r ui.Rect) {
 		g := k.Canvas(p, r)
 		w := pixel.Measure(logo) * 4
@@ -34,7 +34,7 @@ func (a *App) boot(c *ui.Context) {
 		hint := "Enter · Space · Click     回车 · 空格 · 点击"
 		g.Text((g.W-pixel.Measure(hint))/2, g.H-28, hint, pixel.Faint, 1)
 	})
-	base.AutoFocus()
+	pixel.AutoFocus(c, base)
 	if base.Clicked() || c.Shortcut(0, ui.KeyEnter) || c.Shortcut(0, ui.KeySpace) {
 		slog.Debug("8bit: gallery start")
 		a.started = true

gallery/chrome.go

@@ -110,7 +110,7 @@ func (a *App) statusBar(c *ui.Context) {
 // press is a custom-drawn chrome tile; true when clicked.
 func press(c *ui.Context, w, h int, name string, draw func(g pixel.Canvas, st pixel.State)) bool {
 	k := pixel.K(c)
-	shell, base, st := pixel.Shell(c, func() *ui.Element { return ui.ButtonBase(c).Label(name) })
+	shell, base, st := pixel.Shell(c, func() ui.Element { return ui.ButtonBase(c).Label(name) })
 	if w > 0 {
 		shell.Width(k.D(w))
 	}

gallery/demos_foundations.go

@@ -30,7 +30,7 @@ func demoPalettes(c *ui.Context, log func(string)) {
 			s.Palette = pal
 			pixel.Scope(c, s, func() {
 				kp := pixel.K(c)
-				shell, base, st := pixel.Shell(c, func() *ui.Element { return ui.ButtonBase(c).Label(pal.Name) })
+				shell, base, st := pixel.Shell(c, func() ui.Element { return ui.ButtonBase(c).Label(pal.Name) })
 				shell.Height(kp.D(52)).Draw(func(p *ui.Painter, r ui.Rect) {
 					g := kp.Canvas(p, r)
 					g.Frame(0, 0, g.W, g.H, pixel.Window, pixel.Face)
@@ -158,7 +158,7 @@ func demoSprites(c *ui.Context, log func(string)) {
 		sp = slimeLeft
 	}
 	k := pixel.K(c)
-	shell, base, st := pixel.Shell(c, func() *ui.Element { return ui.ButtonBase(c).Label("slime") })
+	shell, base, st := pixel.Shell(c, func() ui.Element { return ui.ButtonBase(c).Label("slime") })
 	shell.Size(k.D(120), k.D(48)).Draw(func(p *ui.Painter, r ui.Rect) {
 		g := k.Canvas(p, r)
 		g.Rect(0, 40, g.W, 8, pixel.Good)

gallery/demos_popups.go

@@ -46,7 +46,7 @@ func demoCoachmark(c *ui.Context, log func(string)) {
 	k := pixel.K(c)
 	s := overlayState(c)
 	tips := []string{"Your bag. Potions live here.", "The map. You are the red dot.", "Save often. Slimes are tricky."}
-	var targets [3]*ui.Element
+	var targets [3]ui.Element
 	ui.Row(c).Gap(k.D(6)).Children(func() {
 		for i, b := range []struct {
 			art  *pixel.Sprite
@@ -71,7 +71,7 @@ func demoCoachmark(c *ui.Context, log func(string)) {
 func demoSpotlight(c *ui.Context, log func(string)) {
 	k := pixel.K(c)
 	s := overlayState(c)
-	var shop *ui.Element
+	var shop ui.Element
 	ui.Row(c).Gap(k.D(6)).Children(func() {
 		input.Button(c, "INN", input.ButtonOptions{})
 		shop = input.Button(c, "SHOP", input.ButtonOptions{Icon: icon.Cart}).Element

gallery/registry.go

@@ -106,7 +106,9 @@ func sources() map[string]string {
 		if err != nil {
 			panic(err)
 		}
-		for _, part := range strings.Split(string(b), "\nfunc ")[1:] {
+		// A Windows checkout may bring CRLF.
+		src := strings.ReplaceAll(string(b), "\r\n", "\n")
+		for _, part := range strings.Split(src, "\nfunc ")[1:] {
 			end := strings.Index(part, "\n}\n")
 			if end < 0 {
 				panic("gallery: unterminated func in " + f.Name())