notifs: persist images

services/Notifs.qml

@@ -4,6 +4,7 @@ pragma ComponentBehavior: Bound
 import qs.components.misc
 import qs.config
 import qs.utils
+import Caelestia
 import Quickshell
 import Quickshell.Io
 import Quickshell.Services.Notifications
@@ -169,6 +170,50 @@ Singleton {
             }
         }
 
+        readonly property LazyLoader dummyImageLoader: LazyLoader {
+            active: false
+
+            PanelWindow {
+                implicitWidth: Config.notifs.sizes.image
+                implicitHeight: Config.notifs.sizes.image
+                color: "transparent"
+                mask: Region {}
+
+                Image {
+                    anchors.fill: parent
+                    source: Qt.resolvedUrl(notif.image)
+                    fillMode: Image.PreserveAspectCrop
+                    cache: false
+                    asynchronous: true
+                    opacity: 0
+
+                    onStatusChanged: {
+                        if (status !== Image.Ready)
+                            return;
+
+                        const cacheKey = notif.appName + notif.summary + notif.id;
+                        let h1 = 0xdeadbeef, h2 = 0x41c6ce57, ch;
+                        for (let i = 0; i < cacheKey.length; i++) {
+                            ch = cacheKey.charCodeAt(i);
+                            h1 = Math.imul(h1 ^ ch, 2654435761);
+                            h2 = Math.imul(h2 ^ ch, 1597334677);
+                        }
+                        h1 = Math.imul(h1 ^ (h1 >>> 16), 2246822507);
+                        h1 ^= Math.imul(h2 ^ (h2 >>> 13), 3266489909);
+                        h2 = Math.imul(h2 ^ (h2 >>> 16), 2246822507);
+                        h2 ^= Math.imul(h1 ^ (h1 >>> 13), 3266489909);
+                        const hash = (h2 >>> 0).toString(16).padStart(8, 0) + (h1 >>> 0).toString(16).padStart(8, 0);
+
+                        const cache = `${Paths.notifimagecache}/${hash}.png`;
+                        CUtils.saveItem(this, Qt.resolvedUrl(cache), () => {
+                            notif.image = cache;
+                            notif.dummyImageLoader.active = false;
+                        });
+                    }
+                }
+            }
+        }
+
         readonly property Connections conn: Connections {
             target: notif.notification
 
@@ -194,6 +239,8 @@ Singleton {
 
             function onImageChanged(): void {
                 notif.image = notif.notification.image;
+                if (notif.notification?.image)
+                    notif.dummyImageLoader.active = true;
             }
 
             function onExpireTimeoutChanged(): void {
@@ -254,6 +301,8 @@ Singleton {
             appIcon = notification.appIcon;
             appName = notification.appName;
             image = notification.image;
+            if (notification?.image)
+                dummyImageLoader.active = true;
             expireTimeout = notification.expireTimeout;
             urgency = notification.urgency;
             resident = notification.resident;

utils/Paths.qml

@@ -17,6 +17,7 @@ Singleton {
     readonly property string config: `${Quickshell.env("XDG_CONFIG_HOME") || `${home}/.config`}/caelestia`
 
     readonly property string imagecache: `${cache}/imagecache`
+    readonly property string notifimagecache: `${imagecache}/notifs`
     readonly property string wallsdir: Quickshell.env("CAELESTIA_WALLPAPERS_DIR") || absolutePath(Config.paths.wallpaperDir)
     readonly property string recsdir: Quickshell.env("CAELESTIA_RECORDINGS_DIR") || `${videos}/Recordings`
     readonly property string libdir: Quickshell.env("CAELESTIA_LIB_DIR") || "/usr/lib/caelestia"