Add Match Terminal Background sidebar setting (#2293)
* Add "Match Terminal Background" sidebar setting Adds a toggle in Settings > Sidebar Appearance that makes the sidebar use the same background color and transparency as the terminal area. Uses layer-level opacity on a fully opaque background color (the same technique as TitlebarLayerBackground) with effective opacity formula `1 - (1-alpha)^2` to account for the terminal's two stacked semi-transparent layers (Bonsplit chrome + Ghostty Metal surface). Also adds a 1px trailing border derived from the terminal chrome color, matching the bonsplit tab bar separator logic. * Fix sidebar border color not updating on theme change Add @State + .onReceive(.ghosttyDefaultBackgroundDidChange) to SidebarTrailingBorder so the separator color recomputes when the Ghostty theme changes, matching the pattern used in SidebarBackdrop. * Address review comments: localize debug toggle, fix separator refresh - Localize the debug panel toggle label (Codex P1) - Add .onAppear to SidebarTrailingBorder for initial color (Cubic P2) - Fix stale doc comment on SidebarTerminalBackgroundView (Cubic P3) --------- Co-authored-by: Lawrence Chen <lawrencecchen@users.noreply.github.com>
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Lawrence Chen
GitHub
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3 changed files with 165 additions and 22 deletions
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@ -2424,6 +2424,7 @@ struct ContentView: View {
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}
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@AppStorage("sidebarBlendMode") private var sidebarBlendMode = SidebarBlendModeOption.withinWindow.rawValue
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@AppStorage("sidebarMatchTerminalBackground") private var sidebarMatchTerminalBackground = false
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// Background glass settings
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@AppStorage("bgGlassTintHex") private var bgGlassTintHex = "#000000"
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@ -2601,7 +2602,11 @@ struct ContentView: View {
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private var contentAndSidebarLayout: AnyView {
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let layout: AnyView
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if sidebarBlendMode == SidebarBlendModeOption.withinWindow.rawValue {
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// When matching terminal background, use HStack so both sidebar and terminal
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// sit directly on the window background with no intermediate layers.
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let useWithinWindow = sidebarBlendMode == SidebarBlendModeOption.withinWindow.rawValue
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&& !sidebarMatchTerminalBackground
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if useWithinWindow {
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// Overlay mode: terminal extends full width, sidebar on top
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// This allows withinWindow blur to see the terminal content
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layout = AnyView(
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@ -8648,6 +8653,9 @@ struct VerticalTabsSidebar: View {
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.accessibilityIdentifier("Sidebar")
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.ignoresSafeArea()
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.background(SidebarBackdrop().ignoresSafeArea())
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.overlay(alignment: .trailing) {
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SidebarTrailingBorder()
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}
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.background(
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WindowAccessor { window in
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modifierKeyMonitor.setHostWindow(window)
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@ -13760,7 +13768,70 @@ private struct TitlebarLeadingInsetReader: NSViewRepresentable {
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}
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}
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/// 1px trailing border on the sidebar, derived from the terminal chrome background
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/// using the same logic as bonsplit's TabBarColors.nsColorSeparator:
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/// dark bg → lighten RGB by 0.16 at 0.36 alpha; light bg → darken by 0.12 at 0.26 alpha.
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private struct SidebarTrailingBorder: View {
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@AppStorage("sidebarMatchTerminalBackground") private var matchTerminalBackground = false
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@State private var separatorColor: NSColor = chromeSeparatorColor()
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var body: some View {
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if matchTerminalBackground {
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Rectangle()
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.fill(Color(nsColor: separatorColor))
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.frame(width: 1)
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.ignoresSafeArea()
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.onAppear {
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separatorColor = Self.chromeSeparatorColor()
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}
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.onReceive(NotificationCenter.default.publisher(for: .ghosttyDefaultBackgroundDidChange)) { _ in
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separatorColor = Self.chromeSeparatorColor()
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}
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}
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}
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/// Replicates bonsplit TabBarColors.nsColorSeparator derivation from chrome background.
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private static func chromeSeparatorColor() -> NSColor {
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let chrome = GhosttyBackgroundTheme.currentColor()
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let srgb = chrome.usingColorSpace(.sRGB) ?? chrome
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var r: CGFloat = 0, g: CGFloat = 0, b: CGFloat = 0, a: CGFloat = 0
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srgb.getRed(&r, green: &g, blue: &b, alpha: &a)
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let luminance = 0.299 * r + 0.587 * g + 0.114 * b
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let isLight = luminance > 0.5
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let amount: CGFloat = isLight ? -0.12 : 0.16
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let alpha: CGFloat = isLight ? 0.26 : 0.36
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return NSColor(
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red: min(1.0, max(0.0, r + amount)),
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green: min(1.0, max(0.0, g + amount)),
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blue: min(1.0, max(0.0, b + amount)),
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alpha: alpha
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)
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}
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}
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/// Sidebar background that uses the same technique as TitlebarLayerBackground:
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/// fully opaque layer color + layer-level opacity. This matches how the terminal's
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/// Metal surface composites its background.
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private struct SidebarTerminalBackgroundView: NSViewRepresentable {
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let backgroundColor: NSColor
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let opacity: CGFloat
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func makeNSView(context: Context) -> NSView {
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let view = NSView()
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view.wantsLayer = true
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view.layer?.backgroundColor = backgroundColor.withAlphaComponent(1.0).cgColor
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view.layer?.opacity = Float(opacity)
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return view
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}
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func updateNSView(_ nsView: NSView, context: Context) {
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nsView.layer?.backgroundColor = backgroundColor.withAlphaComponent(1.0).cgColor
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nsView.layer?.opacity = Float(opacity)
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}
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}
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private struct SidebarBackdrop: View {
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@AppStorage("sidebarMatchTerminalBackground") private var matchTerminalBackground = false
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@AppStorage("sidebarTintOpacity") private var sidebarTintOpacity = SidebarTintDefaults.opacity
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@AppStorage("sidebarTintHex") private var sidebarTintHex = SidebarTintDefaults.hex
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@AppStorage("sidebarTintHexLight") private var sidebarTintHexLight: String?
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@ -13771,8 +13842,28 @@ private struct SidebarBackdrop: View {
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@AppStorage("sidebarCornerRadius") private var sidebarCornerRadius = 0.0
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@AppStorage("sidebarBlurOpacity") private var sidebarBlurOpacity = 1.0
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@Environment(\.colorScheme) private var colorScheme
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@State private var terminalBackgroundColor: NSColor = GhosttyBackgroundTheme.currentColor()
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var body: some View {
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let cornerRadius = CGFloat(max(0, sidebarCornerRadius))
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if matchTerminalBackground {
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// The terminal area has two stacked semi-transparent layers (Bonsplit chrome +
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// Ghostty Metal background). Compute the effective composited opacity to match.
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let alpha = CGFloat(GhosttyApp.shared.defaultBackgroundOpacity)
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let effective = alpha >= 0.999 ? alpha : 1.0 - pow(1.0 - alpha, 2)
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return AnyView(
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SidebarTerminalBackgroundView(
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backgroundColor: GhosttyApp.shared.defaultBackgroundColor,
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opacity: effective
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)
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.clipShape(RoundedRectangle(cornerRadius: cornerRadius, style: .continuous))
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.onReceive(NotificationCenter.default.publisher(for: .ghosttyDefaultBackgroundDidChange)) { _ in
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terminalBackgroundColor = GhosttyBackgroundTheme.currentColor()
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}
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)
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}
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let materialOption = SidebarMaterialOption(rawValue: sidebarMaterial)
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let blendingMode = SidebarBlendModeOption(rawValue: sidebarBlendMode)?.mode ?? .behindWindow
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let state = SidebarStateOption(rawValue: sidebarState)?.state ?? .active
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@ -13785,33 +13876,34 @@ private struct SidebarBackdrop: View {
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return sidebarTintHex
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}()
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let tintColor = (NSColor(hex: resolvedHex) ?? NSColor(hex: sidebarTintHex) ?? .black).withAlphaComponent(sidebarTintOpacity)
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let cornerRadius = CGFloat(max(0, sidebarCornerRadius))
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let useLiquidGlass = materialOption?.usesLiquidGlass ?? false
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let useWindowLevelGlass = useLiquidGlass && blendingMode == .behindWindow
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return ZStack {
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if let material = materialOption?.material {
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// When using liquidGlass + behindWindow, window handles glass + tint
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// Sidebar is fully transparent
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if !useWindowLevelGlass {
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SidebarVisualEffectBackground(
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material: material,
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blendingMode: blendingMode,
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state: state,
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opacity: sidebarBlurOpacity,
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tintColor: tintColor,
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cornerRadius: cornerRadius,
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preferLiquidGlass: useLiquidGlass
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)
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// Tint overlay for NSVisualEffectView fallback
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if !useLiquidGlass {
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Color(nsColor: tintColor)
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return AnyView(
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ZStack {
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if let material = materialOption?.material {
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// When using liquidGlass + behindWindow, window handles glass + tint
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// Sidebar is fully transparent
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if !useWindowLevelGlass {
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SidebarVisualEffectBackground(
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material: material,
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blendingMode: blendingMode,
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state: state,
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opacity: sidebarBlurOpacity,
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tintColor: tintColor,
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cornerRadius: cornerRadius,
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preferLiquidGlass: useLiquidGlass
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)
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// Tint overlay for NSVisualEffectView fallback
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if !useLiquidGlass {
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Color(nsColor: tintColor)
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}
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}
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}
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// When material is none or useWindowLevelGlass, render nothing
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}
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// When material is none or useWindowLevelGlass, render nothing
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}
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.clipShape(RoundedRectangle(cornerRadius: cornerRadius, style: .continuous))
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.clipShape(RoundedRectangle(cornerRadius: cornerRadius, style: .continuous))
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)
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}
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}
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