feat: cache wallpapers

Reduces wallpaper load time massively

1 files changed, 45 insertions, 0 deletions

diff --git a/services/Thumbnailer.qml b/services/Thumbnailer.qml
new file mode 100644
index 0000000..1e22940
--- /dev/null
+++ b/services/Thumbnailer.qml
@@ -0,0 +1,45 @@
+pragma Singleton
+
+import Quickshell
+import Quickshell.Io
+import QtQuick
+import Qt.labs.platform
+
+Singleton {
+    id: root
+
+    readonly property string thumbDir: `${StandardPaths.standardLocations(StandardPaths.GenericCacheLocation)[0]}/caelestia/thumbnails`.slice(7)
+
+    function go(sha: string, path: string, width: int, height: int): string {
+        if (!sha || !path || !width || !height)
+            return "";
+
+        const thumbPath = `${thumbDir}/${sha}@${width}x${height}-exact.png`;
+
+        thumbProc.path = path;
+        thumbProc.thumbPath = thumbPath;
+        thumbProc.width = width;
+        thumbProc.height = height;
+        thumbProc.startDetached();
+
+        return thumbPath;
+    }
+
+    Process {
+        id: thumbProc
+
+        property string path
+        property string thumbPath
+        property int width
+        property int height
+
+        command: ["fish", "-c", `
+if ! test -f ${thumbPath}
+    set -l size (identify -ping -format '%w\n%h' ${path})
+    if test $size[1] -gt ${width} -o $size[2] -gt ${height}
+        magick ${path} -thumbnail ${width}x${height}^ -background none -gravity center -extent ${width}x${height} -unsharp 0x.5 ${thumbPath}
+    end
+end
+`]
+    }
+}