Add Qt/QML desktop shell and Nebula.UI

Introduce a new production desktop shell at `shells/desktop/shell` built with C++20, Qt Quick/QML, and LayerShellQt, including top bar, launcher, desktop surfaces, shell state, and mock app data. Add the shared `packages/nebula-ui` QML module (theme, controls, focus, icons) and wire it into the shell build.

Retire the old GTK/WebKit native host by removing `shells/desktop/native`, move the React shell UI to `shells/desktop/prototype-react` as an archived design reference, and update root/compositor/session documentation to reflect the new Linux-only production architecture and temporary Sway role.
This commit is contained in:
2026-08-26 16:34:40 +12:00
parent 5504d3cfb8
commit befed8ff96
80 changed files with 2128 additions and 609 deletions
@@ -0,0 +1,64 @@
import QtQuick
import QtQuick.Window
import org.kde.layershell 1.0 as LayerShell
import Nebula.UI
Window {
id: root
title: qsTr("Nebula Desktop")
color: "transparent"
flags: Qt.FramelessWindowHint | Qt.WindowDoesNotAcceptFocus
visible: true
width: Screen.width
height: Screen.height
LayerShell.Window.scope: "nebula-desktop"
LayerShell.Window.layer: LayerShell.Window.LayerBackground
LayerShell.Window.anchors: LayerShell.Window.AnchorTop
| LayerShell.Window.AnchorBottom
| LayerShell.Window.AnchorLeft
| LayerShell.Window.AnchorRight
LayerShell.Window.exclusionZone: 0
LayerShell.Window.keyboardInteractivity: LayerShell.Window.KeyboardInteractivityNone
Canvas {
id: backdrop
anchors.fill: parent
onPaint: {
const ctx = getContext("2d")
ctx.reset()
ctx.fillStyle = Theme.background
ctx.fillRect(0, 0, width, height)
let glow = ctx.createRadialGradient(width * 0.12, height * -0.08, 0, width * 0.12, height * -0.08, width * 0.7)
glow.addColorStop(0, "rgba(110, 140, 180, 0.16)")
glow.addColorStop(0.52, "rgba(110, 140, 180, 0)")
ctx.fillStyle = glow
ctx.fillRect(0, 0, width, height)
glow = ctx.createRadialGradient(width * 0.88, height * 1.08, 0, width * 0.88, height * 1.08, width * 0.45)
glow.addColorStop(0, "rgba(42, 68, 98, 0.28)")
glow.addColorStop(0.58, "rgba(42, 68, 98, 0)")
ctx.fillStyle = glow
ctx.fillRect(0, 0, width, height)
glow = ctx.createRadialGradient(width * 0.62, height * 0.38, 0, width * 0.62, height * 0.38, width * 0.28)
glow.addColorStop(0, "rgba(72, 92, 120, 0.08)")
glow.addColorStop(0.7, "rgba(72, 92, 120, 0)")
ctx.fillStyle = glow
ctx.fillRect(0, 0, width, height)
const veil = ctx.createLinearGradient(0, 0, 0, height)
veil.addColorStop(0, "rgba(8, 11, 17, 0.22)")
veil.addColorStop(0.16, "rgba(8, 11, 17, 0)")
veil.addColorStop(0.78, "rgba(8, 11, 17, 0)")
veil.addColorStop(1, "rgba(8, 11, 17, 0.38)")
ctx.fillStyle = veil
ctx.fillRect(0, 0, width, height)
}
onWidthChanged: requestPaint()
onHeightChanged: requestPaint()
}
}
@@ -0,0 +1,75 @@
import QtQuick
import QtQuick.Window
import org.kde.layershell 1.0 as LayerShell
import Nebula.UI
Window {
id: root
title: qsTr("Nebula Launcher")
color: "transparent"
flags: Qt.FramelessWindowHint
visible: ShellState.launcherOpen || launcher.opacity > 0.01
width: Screen.width
height: Screen.height - Theme.topBarHeight
LayerShell.Window.scope: "nebula-launcher"
LayerShell.Window.layer: LayerShell.Window.LayerOverlay
LayerShell.Window.anchors: LayerShell.Window.AnchorTop
| LayerShell.Window.AnchorBottom
| LayerShell.Window.AnchorLeft
| LayerShell.Window.AnchorRight
LayerShell.Window.margins.top: Theme.topBarHeight
LayerShell.Window.exclusionZone: 0
LayerShell.Window.keyboardInteractivity: ShellState.launcherOpen
? LayerShell.Window.KeyboardInteractivityExclusive
: LayerShell.Window.KeyboardInteractivityNone
Item {
anchors.fill: parent
focus: ShellState.launcherOpen
Keys.onEscapePressed: {
event.accepted = true
ShellState.closeLauncher()
}
}
MouseArea {
anchors.fill: parent
acceptedButtons: Qt.LeftButton | Qt.RightButton
onClicked: ShellState.closeLauncher()
}
Launcher {
id: launcher
x: 10
y: 10
width: Math.min(420, parent.width - 20)
height: Math.min(implicitHeight, Math.min(640, parent.height - 24))
opacity: ShellState.launcherOpen ? 1 : 0
yOffset: ShellState.launcherOpen ? 0 : -6
scale: ShellState.launcherOpen ? 1 : 0.985
focus: ShellState.launcherOpen
Behavior on opacity {
NumberAnimation {
duration: Theme.animationNormal
easing.type: Easing.OutCubic
}
}
Behavior on yOffset {
NumberAnimation {
duration: Theme.animationNormal
easing.type: Easing.OutCubic
}
}
Behavior on scale {
NumberAnimation {
duration: Theme.animationNormal
easing.type: Easing.OutCubic
}
}
}
}
@@ -0,0 +1,27 @@
import QtQuick
import QtQuick.Window
import org.kde.layershell 1.0 as LayerShell
import Nebula.UI
Window {
id: root
title: qsTr("Nebula Top Bar")
color: "transparent"
flags: Qt.FramelessWindowHint | Qt.WindowDoesNotAcceptFocus
visible: true
width: Screen.width
height: Theme.topBarHeight
LayerShell.Window.scope: "nebula-topbar"
LayerShell.Window.layer: LayerShell.Window.LayerTop
LayerShell.Window.anchors: LayerShell.Window.AnchorTop
| LayerShell.Window.AnchorLeft
| LayerShell.Window.AnchorRight
LayerShell.Window.exclusionZone: Theme.topBarHeight
LayerShell.Window.keyboardInteractivity: LayerShell.Window.KeyboardInteractivityNone
TopBar {
anchors.fill: parent
}
}