Fix AudioOptions navigation

internal/page/AudioOptions.go

@@ -15,10 +15,12 @@ import (
 	"rhemawavetech.com/rhemawave/internal/shaderManager"
 )
 
-// focusToggle is the focus state of the audio on/off toggle, the bottommost
+// focusToggle is the focus state of the audio on/off toggle, the topmost
-// focusable item. Focus states increase from top to bottom on screen:
+// focusable item on screen (Y increases upward). Focus states increase from
-// 0 = Audio Track entry, 1 = Output Device entry, focusToggle = toggle.
+// top to bottom: focusToggle = toggle, 1 = Output Device, maxFocus = Audio Track.
-const focusToggle = 2
+const focusToggle = 0
+
+const maxFocus = 2
 
 const triangleSize = float32(16)
 
@@ -304,10 +306,10 @@ func (p *AudioOptions) updateCursorPosition() {
 	switch {
 	case p.focusState == focusToggle:
 		item = &p.AudioStatusToggle
-	case p.focusState == 0:
-		item = &p.audioTrackItem
 	case p.focusState == 1:
 		item = &p.outputDeviceItem
+	case p.focusState == 2:
+		item = &p.audioTrackItem
 	default:
 		return
 	}
@@ -329,16 +331,16 @@ func (p *AudioOptions) ToggleAudio() {
 }
 
 // moveFocus returns the focus state after moving by delta (1 = down, -1 = up)
-// on screen. Focus states run 0 (Audio Track) to focusToggle (toggle), so
+// on screen. Focus states run focusToggle (toggle) to maxFocus (Audio Track),
-// navigation never skips the Output Device entry.
+// so navigation never skips the Output Device entry.
 func moveFocus(current, delta int) int {
 	next := current + delta
-	if next < 0 {
+	if next < focusToggle {
-		next = 0
-	}
-	if next > focusToggle {
 		next = focusToggle
 	}
+	if next > maxFocus {
+		next = maxFocus
+	}
 	return next
 }
 
@@ -353,10 +355,10 @@ func (p *AudioOptions) HandleEvent(event *sdl.Event) error {
 		switch p.focusState {
 		case focusToggle:
 			p.ToggleAudio()
-		case 0:
-			p.Context.NavigateTo(TRACKS)
 		case 1:
 			p.Context.NavigateTo(AUDIO_DEVICES)
+		case 2:
+			p.Context.NavigateTo(TRACKS)
 		}
 
 	case sdl.K_DOWN:

internal/page/AudioOptions_test.go

@@ -9,14 +9,14 @@ func TestMoveFocus(t *testing.T) {
 		delta   int
 		want    int
 	}{
-		{"down from track goes to device", 0, 1, 1},
+		{"down from toggle goes to device", focusToggle, 1, 1},
-		{"down from device goes to toggle", 1, 1, focusToggle},
+		{"down from device goes to track", 1, 1, 2},
-		{"down from toggle stays", focusToggle, 1, focusToggle},
+		{"down from track stays", 2, 1, 2},
-		{"up from toggle goes to device", focusToggle, -1, 1},
+		{"up from track goes to device", 2, -1, 1},
-		{"up from device goes to track", 1, -1, 0},
+		{"up from device goes to toggle", 1, -1, focusToggle},
-		{"up from track stays", 0, -1, 0},
+		{"up from toggle stays", focusToggle, -1, focusToggle},
-		{"down does not overshoot below toggle", focusToggle, 5, focusToggle},
+		{"down does not overshoot below track", maxFocus, 5, maxFocus},
-		{"up does not undershoot above track", 0, -5, 0},
+		{"up does not undershoot above toggle", focusToggle, -5, focusToggle},
 	}
 
 	for _, tt := range tests {