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

77 lines
2.0 KiB
Go

package overlay
import (
"log/slog"
"github.com/egoist/mygo/ui"
"git.zacharyzhang.com/ZacharyZhang-NY/8bitMyGoUI/pixel"
)
type SheetOptions struct {
// Height is in dots; zero means 120.
Height int
Disabled bool
}
type SheetResult struct {
Element ui.Element
// Closed is a drag down, Escape or a click outside.
Closed bool
}
type sheetKey struct{}
// Sheet rises from the bottom; drag its bar down.
func Sheet(c *ui.Context, text string, open *bool, o SheetOptions, content func()) SheetResult {
k := pixel.K(c)
h := pixel.Or("Sheet Height", o.Height, 120)
off := o.Disabled || pixel.Current(c).Inert
home := ui.Box(c)
pulled := ui.Local(home, sheetKey{}, func() float32 { return 0 })
rise := k.D(arriving(c, home, *open) * h / 4)
was := *open
var res SheetResult
res.Element = ui.DialogBase(c, open, func(back, panel ui.Element) {
dim(k, back, pixel.Back, 8)
panel.Label(text).Focusable().FocusRing(false).Draw(func(p *ui.Painter, r ui.Rect) {
g := k.Canvas(p, r)
g.Frame(0, 0, g.W, g.H, pixel.Window, pixel.Face)
}).Children(func() {
pixel.Harbor(c, panel, func() {
bar := ui.Box(c).FillWidth().Height(k.D(10)).Role(ui.RoleNone)
_, dy, held := bar.Dragged()
switch {
case off:
*pulled = 0
case held:
*pulled = max(0, *pulled+dy)
case *pulled > 0:
if *pulled > k.D(h/3) {
// A release is no drag: build again, closed.
*open = false
c.Invalidate()
}
*pulled = 0
}
bar.Draw(func(p *ui.Painter, r ui.Rect) {
g := k.Canvas(p, r)
g.Rect((g.W-24)/2, 4, 24, 2, pixel.Shade)
})
ui.Column(c).Grow(1).Padding(0, k.D(8), k.D(8), k.D(8)).Children(func() { body(c, o.Disabled, content) })
})
})
// Placed after the bar, so a release lands at once.
drop := float32(int(*pulled/k.Dot())) * k.Dot()
panel.Absolute().Left(0).Right(0).Bottom(-rise - drop).Height(k.D(h))
})
res.Closed = was && !*open
if !*open {
*pulled = 0
}
if res.Closed {
slog.Debug("8bit: sheet closed", "label", text)
}
return res
}