Add floating traffic-light window chrome

Introduces a dedicated layer-shell `WindowChromeSurface` that renders macOS-style traffic-light controls over the focused Sway window titlebar, replacing the old top-bar window controls. Adds theme tokens and a reusable `TrafficLightButton` component, updates shell QML/CMake wiring, and adjusts Sway titlebar padding/title format so window titles do not overlap the overlay. Window tracking was extended with focused-window geometry/deco/fullscreen properties plus backend refresh support so the chrome follows window movement and state changes in near real time.
2026-08-26 22:38:33 +12:00
parent 08e67845a5
commit 4321209e92
14 changed files with 452 additions and 92 deletions
@@ -0,0 +1,43 @@
+import QtQuick
+import QtQuick.Window
+import org.kde.layershell 1.0 as LayerShell
+import Nebula.UI
+import Nebula.Windows
+
+Window {
+    id: root
+
+    readonly property bool active: WindowService.hasFocusedWindow
+        && !WindowService.focusedWindowFullscreen
+        && !ShellState.launcherOpen
+    readonly property int chromeX: WindowService.focusedWindowX
+        + WindowService.focusedWindowDecoX
+        + Theme.windowChromeInset
+    readonly property int chromeY: {
+        const top = WindowService.focusedWindowY + WindowService.focusedWindowDecoY
+        const decoHeight = WindowService.focusedWindowDecoHeight
+        if (decoHeight <= 0)
+            return top + 6
+        return top + Math.max(0, Math.round((decoHeight - height) / 2))
+    }
+
+    title: qsTr("Nebula Window Chrome")
+    color: "transparent"
+    flags: Qt.FramelessWindowHint | Qt.WindowDoesNotAcceptFocus
+    visible: root.active
+    width: Math.max(1, controls.implicitWidth)
+    height: Math.max(1, controls.implicitHeight)
+
+    LayerShell.Window.scope: "nebula-window-chrome"
+    LayerShell.Window.layer: LayerShell.Window.LayerTop
+    LayerShell.Window.anchors: LayerShell.Window.AnchorLeft | LayerShell.Window.AnchorTop
+    LayerShell.Window.margins.left: Math.max(0, chromeX)
+    LayerShell.Window.margins.top: Math.max(0, chromeY)
+    LayerShell.Window.exclusionZone: 0
+    LayerShell.Window.keyboardInteractivity: LayerShell.Window.KeyboardInteractivityNone
+
+    WindowControls {
+        id: controls
+        anchors.centerIn: parent
+    }
+}