qs: add wallpaper cycling functionality

config/quickshell/.config/quickshell/Services/IPCService.qml

@@ -34,6 +34,10 @@ Item {
             BackgroundService.setWallpaper(path);
         }
 
+        function next() {
+            WallpaperCycle.applyNext();
+        }
+
         target: "background"
     }
 

config/quickshell/.config/quickshell/Services/SettingsService.qml

@@ -13,6 +13,7 @@ Singleton {
     property alias location: adapter.location
     property alias backgroundPath: adapter.backgroundPath
     property alias wifiEnabled: adapter.wifiEnabled
+    property alias cycleWallpapers: adapter.cycleWallpapers
 
     FileView {
         id: settingFile
@@ -34,6 +35,7 @@ Singleton {
             property string location: "New York"
             property string backgroundPath: ""
             property bool wifiEnabled: true
+            property list<string> cycleWallpapers: []
         }
 
     }

config/quickshell/.config/quickshell/Services/WallpaperCycle.qml

@@ -0,0 +1,56 @@
+import QtQuick
+import Quickshell
+import Quickshell.Io
+import qs.Utils
+pragma Singleton
+
+Singleton {
+    id: root
+
+    property int cycleInterval: 900 // in seconds
+    property var wallpapers: SettingsService.cycleWallpapers
+
+    function applyNext() {
+        if (root.wallpapers.length === 0) {
+            Logger.w("WallpaperCycle", "No wallpapers to cycle through, skipping.");
+            return ;
+        }
+        cycleTimer.stop();
+        const current = SettingsService.backgroundPath;
+        let index = -1;
+        if (current) {
+            for (let i = 0; i < root.wallpapers.length; i++) {
+                if (root.wallpapers[i] === current) {
+                    index = i;
+                    break;
+                }
+            }
+        }
+        if (index === -1) {
+            Logger.w("WallpaperCycle", "Current wallpaper not found in cycle list, starting from the beginning.");
+            index = 0;
+        } else {
+            index = (index + 1) % root.wallpapers.length;
+        }
+        const nextWallpaper = root.wallpapers[index];
+        Logger.i("WallpaperCycle", "Cycling to next wallpaper: " + nextWallpaper);
+        _apply(nextWallpaper);
+        cycleTimer.start();
+    }
+
+    function _apply(path) {
+        Quickshell.execDetached(["sh", "-c", "wallreel -a '" + path + "'"]);
+    }
+
+    Timer {
+        id: cycleTimer
+
+        running: false
+        repeat: true
+        interval: root.cycleInterval * 1000
+        onTriggered: {
+            root.applyNext();
+        }
+    }
+
+}

config/quickshell/.config/quickshell/shell.qml

@@ -23,6 +23,7 @@ ShellRoot {
             Component.onCompleted: {
                 SunsetService;
                 NotesService;
+                WallpaperCycle;
             }
 
             IPCService {

config/wallpaper/.config/wallreel/config.json

@@ -16,7 +16,7 @@
         ]
     },
     "action": {
-        "onSelected": "qs ipc call background set '{{ path }}'; touch '{{ path }}'; change-colortheme -c '{{ colorHex }}'",
+        "onSelected": "qs ipc call background set '{{ path }}'; change-colortheme -c '{{ colorHex }}'",
         "onPreview": "qs ipc call background preview '{{ path }}'; change-colortheme -c '{{ colorHex }}' quickshell niri",
         "quitOnSelected": true,
         "saveState": [

memo/lfs.md

@@ -115,28 +115,28 @@ set -euo pipefail
 
 # mount virtual file systems
 
-mkdir -pv $LFS/{dev,proc,sys,run}
+mkdir -pv "$LFS"/{dev,proc,sys,run}
 
-mount -v --bind /dev $LFS/dev
+mountpoint -q "$LFS"/dev || mount -v --bind /dev "$LFS"/dev
 
-mount -vt devpts devpts -o gid=5,mode=0620 $LFS/dev/pts
-mount -vt proc proc $LFS/proc
-mount -vt sysfs sysfs $LFS/sys
-mount -vt tmpfs tmpfs $LFS/run
+mountpoint -q "$LFS"/dev/pts || mount -vt devpts devpts -o gid=5,mode=0620 $LFS/dev/pts
+mountpoint -q "$LFS"/proc || mount -vt proc proc "$LFS"/proc
+mountpoint -q "$LFS"/sys || mount -vt sysfs sysfs "$LFS"/sys
+mountpoint -q "$LFS"/run || mount -vt tmpfs tmpfs "$LFS"/run
 
-if [ -h $LFS/dev/shm ]; then
-    install -v -d -m 1777 $LFS$(realpath /dev/shm)
+if [ -h "$LFS"/dev/shm ]; then
+    install -v -d -m 1777 "${LFS}$(realpath /dev/shm)"
 else
-    mount -vt tmpfs -o nosuid,nodev tmpfs $LFS/dev/shm
+    mount -vt tmpfs -o nosuid,nodev tmpfs "$LFS"/dev/shm
 fi
 
 # cleanup (defer)
 
 cleanup() {
     echo "Cleaning up..."
-    mountpoint -q $LFS/dev/shm && umount $LFS/dev/shm
-    umount $LFS/dev/pts
-    umount $LFS/{sys,proc,run,dev}
+    mountpoint -q "$LFS"/dev/shm && umount "$LFS"/dev/shm || true
+    umount "$LFS"/dev/pts || true
+    umount "$LFS"/{sys,proc,run,dev} || true
 }
 trap cleanup EXIT INT TERM
 
@@ -239,7 +239,7 @@ chroot "$LFS" /usr/bin/env -i \
   NVIDIA 专有驱动的安装指引在 [GLFS 中](https://www.linuxfromscratch.org/glfs/view/stable/shareddeps/drivers-NVIDIA.html)有详细说明. 但其依赖众多, 其中包括很多 BLFS 和 GLFS 中的软件包. 因此不必心急, 可以先按需安装 BLFS 中的其他包, 等到需要 [Mesa](https://www.linuxfromscratch.org/blfs/view/stable-systemd/x/mesa.html) 作为依赖时再去 GLFS 中安装 NVIDIA 驱动, 这将会轻松不少.
 
   关于其对内核配置的影响, 总结出来有以下两点:
-  - 禁用 nouveau. 除非显卡型号过于老旧, 否则不推荐使用内核中的 nouveau 驱动, 对应配置选项如 `CONFIG_DRM_NOUVEAU` `CONFIG_FB_NVIDIA` 等可留空. [GLFS NVIDIA-590.48.01 页面页脚](https://www.linuxfromscratch.org/glfs/view/stable/shareddeps/NVIDIA.html#ftn.idm139677630432800)有提到
+  - 禁用 nouveau. 除非显卡型号过于老旧, 否则不推荐使用内核中的 nouveau 驱动, 对应配置选项如 `CONFIG_DRM_NOUVEAU` `CONFIG_FB_NVIDIA` 等可留空. [GLFS NVIDIA-590.48.01 页面页脚](https://www.linuxfromscratch.org/glfs/view/stable/shareddeps/nvidia.html)有提到
 
     > NVIDIA's kernel modules will fail to compile with TTY support unless a graphics driver is included in the kernel. Nouveau is used here, though alternate graphics drivers may also work.