Files
ZacharyZhang-NYandClaude Opus 5.5 03e1f91706 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>
2026-10-17 01:31:08 -04:00

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// Package media plays, shows and records sound and pictures.
package media
import (
"fmt"
"time"
"github.com/egoist/mygo/ui"
"git.zacharyzhang.com/ZacharyZhang-NY/8bitMyGoUI/icon"
"git.zacharyzhang.com/ZacharyZhang-NY/8bitMyGoUI/pixel"
)
// Track is a song: title, artist and length.
type Track struct {
Title, Artist string
Length time.Duration
}
// mmss prints d as m:ss, or h:mm:ss past an hour.
func mmss(d time.Duration) string {
s := int(d / time.Second)
if s >= 3600 {
return fmt.Sprintf("%d:%02d:%02d", s/3600, s/60%60, s%60)
}
return fmt.Sprintf("%d:%02d", s/60, s%60)
}
// prev is Next turned around.
var prev = icon.Next.Mirror()
// scale is s, or def for zero; above 4 panics.
func scale(name string, s, def int) int {
s = pixel.Or(name+" Scale", s, def)
if s > 4 {
panic(fmt.Sprintf("media: %s Scale %d outside 1–4", name, s))
}
return s
}
// art is a named picture w by h dots.
func art(c *ui.Context, k pixel.Kit, label string, w, h int) ui.Element {
if label == "" {
panic("media: a picture needs a name")
}
return ui.Box(c).Size(k.D(w), k.D(h)).Label(label).Role(ui.RoleImage)
}
// dark is the darkest slot and a line on it.
func dark(k pixel.Kit) (body, line pixel.Slot) {
if k.Palette().Night {
return pixel.Well, pixel.Face
}
return pixel.Ink, pixel.Faint
}
// sameSize panics unless every sprite matches the first.
func sameSize(name string, sps []*pixel.Sprite) {
if len(sps) == 0 {
panic("media: " + name + " needs pictures")
}
for _, sp := range sps {
if sp.W != sps[0].W || sp.H != sps[0].H {
panic(fmt.Sprintf("media: %s mixes %d×%d and %d×%d pictures", name, sps[0].W, sps[0].H, sp.W, sp.H))
}
}
}
type turnKey struct{}
// turn is steps taken, their first frame, and play.
type turn struct {
held, from int
playing bool
}
// turned counts steps while playing; stopped, it holds still.
func turned(c *ui.Context, k pixel.Kit, e ui.Element, playing bool, fps int) int {
s := ui.Local(e, turnKey{}, func() turn { return turn{} })
on := playing && !k.Reduce()
if on {
n := k.Tick(c, fps)
// A clock stepping back rebases, so the count never falls.
if !s.playing || n-s.from < s.held {
s.from = n - s.held
}
s.held = n - s.from
}
s.playing = on
return s.held
}