feat: wallpaper

modules/background/Background.qml

@@ -26,6 +26,8 @@ Variants {
             anchors.bottom: true
             anchors.left: true
             anchors.right: true
+
+            Wallpaper {}
         }
     }
 }

modules/background/Wallpaper.qml

@@ -0,0 +1,75 @@
+pragma ComponentBehavior: Bound
+
+import "root:/widgets"
+import "root:/services"
+import "root:/config"
+import QtQuick
+
+Item {
+    id: root
+
+    property url source: Wallpapers.current ? `file://${Wallpapers.current}` : ""
+    property Image current: one
+
+    anchors.fill: parent
+
+    onSourceChanged: {
+        if (current === one)
+            two.update();
+        else
+            one.update();
+    }
+
+    Img {
+        id: one
+    }
+
+    Img {
+        id: two
+    }
+
+    component Img: Image {
+        id: img
+
+        function update(): void {
+            if (source === root.source)
+                root.current = this;
+            else
+                source = root.source;
+        }
+
+        anchors.fill: parent
+        asynchronous: true
+        fillMode: Image.PreserveAspectCrop
+        opacity: 0
+        scale: 0.8
+
+        onStatusChanged: {
+            if (status === Image.Ready)
+                root.current = this;
+        }
+
+        states: State {
+            name: "visible"
+            when: root.current === img
+
+            PropertyChanges {
+                img.opacity: 1
+                img.scale: 1
+            }
+        }
+
+        transitions: Transition {
+            from: "*"
+            to: "*"
+
+            NumberAnimation {
+                target: img
+                properties: "opacity,scale"
+                duration: Appearance.anim.durations.normal
+                easing.type: Easing.BezierSpline
+                easing.bezierCurve: Appearance.anim.curves.standard
+            }
+        }
+    }
+}

services/Wallpapers.qml

@@ -9,9 +9,14 @@ import Qt.labs.platform
 Singleton {
     id: root
 
+    readonly property string currentPath: `${StandardPaths.standardLocations(StandardPaths.GenericStateLocation)[0]}/caelestia/wallpaper/last.txt`.slice(7)
     readonly property string path: `${StandardPaths.standardLocations(StandardPaths.PicturesLocation)[0]}/Wallpapers`.slice(7)
 
     property list<Wallpaper> list
+    property bool showPreview: false
+    readonly property string current: showPreview ? preview : actualCurrent
+    property string preview
+    property string actualCurrent
 
     readonly property list<var> preppedWalls: list.map(w => ({
                 name: Fuzzy.prepare(w.name),
@@ -32,6 +37,15 @@ Singleton {
         setWall.startDetached();
     }
 
+    reloadableId: "wallpapers"
+
+    FileView {
+        path: root.currentPath
+        watchChanges: true
+        onFileChanged: reload()
+        onLoaded: root.actualCurrent = text().trim()
+    }
+
     Process {
         id: setWall