pre-capture lock screen screenshots via hidden window and ScreenshotService

shell/modules/ScreenCapture.qml

@@ -0,0 +1,44 @@
+import QtQuick
+import Quickshell
+import Quickshell.Wayland
+import "../services" as S
+
+PanelWindow {
+    id: root
+
+    required property var screen
+
+    color: "transparent"
+    WlrLayershell.layer: WlrLayer.Background
+    WlrLayershell.exclusiveZone: -1
+    WlrLayershell.namespace: "nova-screenshot"
+    mask: Region {}
+
+    anchors.top: true
+    anchors.left: true
+    anchors.right: true
+    anchors.bottom: true
+
+    ScreencopyView {
+        id: _capture
+        anchors.fill: parent
+        captureSource: root.screen
+    }
+
+    Connections {
+        target: S.ScreenshotService
+        function onCaptureRequested() {
+            _capture.captureFrame();
+        }
+    }
+
+    Connections {
+        target: _capture
+        function onHasContentChanged() {
+            if (_capture.hasContent)
+                _capture.grabToImage(result => {
+                    S.ScreenshotService.store(root.screen.name, result);
+                });
+        }
+    }
+}

shell/modules/qmldir

@@ -32,6 +32,7 @@ PowerModule 1.0 PowerModule.qml
 PowerProfileModule 1.0 PowerProfileModule.qml
 PrivacyModule 1.0 PrivacyModule.qml
 ProcessList 1.0 ProcessList.qml
+ScreenCapture 1.0 ScreenCapture.qml
 ScreenCorners 1.0 ScreenCorners.qml
 TemperatureModule 1.0 TemperatureModule.qml
 ThemedIcon 1.0 ThemedIcon.qml