logger: add a dedicated QML logging Singleton

- adds log.info/error/debug/warn/fatal
- adds ability to write logs to any file
- add CLI options in addition to env to set log levels

quickshell/Modules/Lock/KeyboardController.qml

@@ -1,9 +1,11 @@
 pragma ComponentBehavior: Bound
 
 import QtQuick
+import qs.Services
 
 Item {
     id: keyboard_controller
+    readonly property var log: Log.scoped("KeyboardController")
 
     // reference on the TextInput
     property Item target
@@ -14,21 +16,20 @@ Item {
 
     function show() {
         if (!isKeyboardActive && keyboard === null) {
-            keyboard = keyboardComponent.createObject(
-                        keyboard_controller.rootObject)
-            keyboard.target = keyboard_controller.target
-            keyboard.dismissed.connect(hide)
-            isKeyboardActive = true
+            keyboard = keyboardComponent.createObject(keyboard_controller.rootObject);
+            keyboard.target = keyboard_controller.target;
+            keyboard.dismissed.connect(hide);
+            isKeyboardActive = true;
         } else
-            console.log("The keyboard is already shown")
+            log.debug("The keyboard is already shown");
     }
 
     function hide() {
         if (isKeyboardActive && keyboard !== null) {
-            keyboard.destroy()
-            isKeyboardActive = false
+            keyboard.destroy();
+            isKeyboardActive = false;
         } else
-            console.log("The keyboard is already hidden")
+            log.debug("The keyboard is already hidden");
     }
 
     // private

quickshell/Modules/Lock/LockScreenContent.qml

@@ -14,6 +14,7 @@ import qs.Widgets
 
 Item {
     id: root
+    readonly property var log: Log.scoped("LockScreenContent")
 
     function encodeFileUrl(path) {
         if (!path)
@@ -95,9 +96,9 @@ Item {
         if (SessionService.loginctlAvailable && DMSService.apiVersion >= 2) {
             DMSService.sendRequest("loginctl.lockerReady", null, resp => {
                 if (resp?.error)
-                    console.warn("lockerReady failed:", resp.error);
+                    log.warn("lockerReady failed:", resp.error);
                 else
-                    console.log("lockerReady sent (afterAnimating/afterRendering)");
+                    log.debug("lockerReady sent (afterAnimating/afterRendering)");
             });
         }
     }
@@ -803,7 +804,7 @@ Item {
                             }
 
                             if (pam.passwd.active) {
-                                console.log("PAM is active, ignoring input");
+                                log.debug("PAM is active, ignoring input");
                                 event.accepted = true;
                                 return;
                             }
@@ -1622,7 +1623,7 @@ Item {
             buttonSize: 40
             onClicked: {
                 if (demoMode) {
-                    console.log("Demo: Power Menu");
+                    log.debug("Demo: Power Menu");
                 } else {
                     powerMenu.show();
                 }

quickshell/Modules/Lock/LockScreenDemo.qml

@@ -3,9 +3,11 @@ pragma ComponentBehavior: Bound
 import QtQuick
 import Quickshell
 import Quickshell.Wayland
+import qs.Services
 
 PanelWindow {
     id: root
+    readonly property var log: Log.scoped("LockScreenDemo")
 
     property bool demoActive: false
 
@@ -25,12 +27,12 @@ PanelWindow {
     color: "transparent"
 
     function showDemo(): void {
-        console.log("Showing lock screen demo");
+        log.debug("Showing lock screen demo");
         demoActive = true;
     }
 
     function hideDemo(): void {
-        console.log("Hiding lock screen demo");
+        log.debug("Hiding lock screen demo");
         demoActive = false;
     }
 

quickshell/Modules/Lock/VideoScreensaver.qml

@@ -7,6 +7,7 @@ import qs.Services
 
 Item {
     id: root
+    readonly property var log: Log.scoped("VideoScreensaver")
 
     required property string screenName
     property bool active: false
@@ -53,7 +54,7 @@ Item {
 
         onExited: exitCode => {
             if (exitCode !== 0 || !videoPicker.result) {
-                console.warn("VideoScreensaver: no video found in folder");
+                log.warn("no video found in folder");
                 ToastService.showError(I18n.tr("Video Screensaver"), I18n.tr("No video found in folder"));
                 root.dismiss();
             }
@@ -98,14 +99,14 @@ Item {
             `, background, "VideoScreensaver.VideoPlayer");
 
             videoPlayer.errorOccurred.connect((error, errorString) => {
-                console.warn("VideoScreensaver: playback error:", errorString);
+                log.warn("playback error:", errorString);
                 ToastService.showError(I18n.tr("Video Screensaver"), I18n.tr("Playback error: ") + errorString);
                 root.dismiss();
             });
 
             return true;
         } catch (e) {
-            console.warn("VideoScreensaver: Failed to create video player:", e);
+            log.warn("Failed to create video player:", e);
             return false;
         }
     }