Merge main

AGENTS.md

@@ -37,6 +37,7 @@ testdata/snapshots/  <os>/<name>-<light|dark>.png
 - Focus: `internal.Ring(e, k.Focus, radius)` for the 2 DIP ring with 2 DIP gap.
 - State marks (checked, selected, progress) use `OnAccent` on `Accent`, or `AccentText`, never `Accent` alone on dark surfaces (2.44:1).
 - Ornament color only for dividers, corners, panel titles. No gradients, glow, glass or texture.
+- Animated paths: pass coordinates through `internal.Snap(p, v)`. MyGo caches path masks by quarter-pixel keys (ui/path.go); unsnapped motion reuses near-miss masks and breaks snapshots.
 - Durations: `mujica.Motion(c, theme.StateDuration)`; popups use `theme.PopupDuration`.
 - Disabled blocks input before handling it (`Disabled(true)`); MyGo dims disabled elements, do not add opacity.
 - Copy shown by a component comes from `msg(c, key)`; business copy comes from the caller.

internal/paint.go

@@ -2,6 +2,8 @@
 package internal
 
 import (
+	"math"
+
 	"github.com/egoist/mygo/ui"
 
 	"mujicaui/theme"
@@ -33,3 +35,9 @@ func Diamond(cx, cy, s float32) *ui.Path {
 	p.Close()
 	return &p
 }
+
+// Snap rounds v to MyGo's quarter-device-pixel path cache grid.
+func Snap(p *ui.Painter, v float32) float32 {
+	g := 4 * p.Scale()
+	return float32(math.Round(float64(v*g))) / g
+}

progress.go

@@ -7,6 +7,7 @@ import (
 
 	"github.com/egoist/mygo/ui"
 
+	"mujicaui/internal"
 	"mujicaui/theme"
 )
 
@@ -112,21 +113,21 @@ func progressRing(c *ui.Context, k theme.Tokens, u float32, acc float64, name, c
 		}
 		stroke := max(3, d/10)
 		ring.Draw(func(p *ui.Painter, r ui.Rect) {
-			cx, cy, rad := r.X+r.W/2, r.Y+r.H/2, (r.W-stroke)/2
+			cx, cy, rad := internal.Snap(p, r.X+r.W/2), internal.Snap(p, r.Y+r.H/2), internal.Snap(p, (r.W-stroke)/2)
 			var track ui.Path
 			track.Circle(cx, cy, rad)
 			p.StrokePath(&track, stroke, k.Border)
 			switch {
 			case !opts.Indeterminate:
 				if shown > 0 {
-					p.StrokePath(progressArc(cx, cy, rad, 0, shown), stroke, k.AccentText)
+					p.StrokePath(progressArc(p, cx, cy, rad, 0, shown), stroke, k.AccentText)
 				}
 			case still:
 				p.StrokePath(&track, stroke, k.AccentText.Alpha(0.4))
 			default:
 				p.AnimationFrame()
 				start := float32(p.Now().UnixMilli()%1200) / 1200
-				p.StrokePath(progressArc(cx, cy, rad, start, start+0.25), stroke, k.AccentText)
+				p.StrokePath(progressArc(p, cx, cy, rad, start, start+0.25), stroke, k.AccentText)
 			}
 		})
 		if caption != "" && d >= 44 && !opts.Indeterminate {
@@ -150,7 +151,7 @@ func progressRing(c *ui.Context, k theme.Tokens, u float32, acc float64, name, c
 }
 
 // progressArc is the arc from turn a to turn b, clockwise from twelve o'clock.
-func progressArc(cx, cy, r float32, a, b float32) *ui.Path {
+func progressArc(pt *ui.Painter, cx, cy, r float32, a, b float32) *ui.Path {
 	var p ui.Path
 	n := max(2, int(math.Ceil(float64((b-a)*64))))
 	for i := 0; i <= n; i++ {
@@ -158,9 +159,9 @@ func progressArc(cx, cy, r float32, a, b float32) *ui.Path {
 		x := cx + r*float32(math.Sin(2*math.Pi*t))
 		y := cy - r*float32(math.Cos(2*math.Pi*t))
 		if i == 0 {
-			p.MoveTo(x, y)
+			p.MoveTo(internal.Snap(pt, x), internal.Snap(pt, y))
 		} else {
-			p.LineTo(x, y)
+			p.LineTo(internal.Snap(pt, x), internal.Snap(pt, y))
 		}
 	}
 	return &p

spinner.go

@@ -58,11 +58,8 @@ func spinnerMark(c *ui.Context, label string, size float32, color ui.Color, stil
 			a := 2 * math.Pi * (turn + float64(i)/4)
 			x := cx + rad*float32(math.Cos(a))
 			y := cy + rad*float32(math.Sin(a))
-			// Device-pixel centers keep cached shapes rendering alike.
-			s := p.Scale()
-			x, y = float32(math.Round(float64(x*s)))/s, float32(math.Round(float64(y*s)))/s
 			alpha := 1 - float32(i)*0.22
-			p.FillPath(internal.Diamond(x, y, r.W*0.3), color.Alpha(alpha))
+			p.FillPath(internal.Diamond(internal.Snap(p, x), internal.Snap(p, y), internal.Snap(p, r.W*0.3)), color.Alpha(alpha))
 		}
 	})
 }