nova-shell/modules/OverviewBackdrop.qml

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import QtQuick
import Quickshell
import Quickshell.Wayland
import "." as M
PanelWindow {
id: root
required property var screen
color: "transparent"
WlrLayershell.layer: WlrLayer.Background
WlrLayershell.exclusiveZone: -1
WlrLayershell.namespace: "nova-overview-backdrop"
mask: Region {}
anchors.top: true
anchors.left: true
anchors.right: true
anchors.bottom: true
Rectangle {
anchors.fill: parent
color: M.Theme.base01
}
ShaderEffect {
id: fx
anchors.fill: parent
fragmentShader: Quickshell.shellPath("modules/hex_wave.frag.qsb")
property real uSize: 50.0
property real uWavePhase: -200
property real uBreath: 0
property real uGlitch: 0
property real uGlitchSeed: 0.0
property vector4d uResolution: Qt.vector4d(width, height, 0, 0)
property color uC0: M.Theme.base0C
property color uC1: M.Theme.base0E
property color uC2: M.Theme.base09
Connections {
target: M.NiriIpc
function onOverviewOpenChanged() {
if (!M.NiriIpc.overviewOpen) {
fx.uWavePhase = -200;
fx.uBreath = 0;
}
}
}
// Wave animation: 6s sweep + 8s pause, only while overview is open
SequentialAnimation on uWavePhase {
loops: Animation.Infinite
running: M.NiriIpc.overviewOpen && !M.Theme.reducedMotion
NumberAnimation {
from: -200
to: fx.width + 200
duration: 6000
easing.type: Easing.InOutSine
}
PauseAnimation {
duration: 8000
}
}
// Breathing pulse while overview is open
SequentialAnimation on uBreath {
loops: Animation.Infinite
running: M.NiriIpc.overviewOpen && !M.Theme.reducedMotion
NumberAnimation {
from: 0
to: 1
duration: 2500
easing.type: Easing.InOutSine
}
NumberAnimation {
from: 1
to: 0
duration: 2500
easing.type: Easing.InOutSine
}
}
// Random subtle glitches — fire every 1237s, total ~250ms each
Timer {
interval: 20000
repeat: true
running: !M.Theme.reducedMotion
onTriggered: {
interval = 12000 + Math.floor(Math.random() * 25000);
fx.uGlitchSeed = Math.random() * 1000.0;
_glitchAnim.start();
}
}
SequentialAnimation {
id: _glitchAnim
NumberAnimation {
target: fx
property: "uGlitch"
to: 0.7
duration: 50
easing.type: Easing.OutQuad
}
NumberAnimation {
target: fx
property: "uGlitch"
to: 0.15
duration: 50
}
NumberAnimation {
target: fx
property: "uGlitch"
to: 0.85
duration: 60
easing.type: Easing.OutQuad
}
NumberAnimation {
target: fx
property: "uGlitch"
to: 0
duration: 100
easing.type: Easing.InQuad
}
}
}
}