wallpaper: limit source size

Also animate launcher and osd background colours

modules/background/Wallpaper.qml

@@ -43,6 +43,8 @@ Item {
         fillMode: Image.PreserveAspectCrop
         opacity: 0
         scale: Wallpapers.showPreview ? 1 : 0.8
+        sourceSize.width: width
+        sourceSize.height: height
 
         onStatusChanged: {
             if (status === Image.Ready)

modules/launcher/Background.qml

@@ -58,5 +58,13 @@ Shape {
             radiusY: root.roundingY
             direction: PathArc.Counterclockwise
         }
+
+        Behavior on fillColor {
+            ColorAnimation {
+                duration: Appearance.anim.durations.normal
+                easing.type: Easing.BezierSpline
+                easing.bezierCurve: Appearance.anim.curves.standard
+            }
+        }
     }
 }

modules/osd/Background.qml

@@ -58,5 +58,13 @@ Shape {
             radiusX: root.roundingX
             radiusY: root.rounding
         }
+
+        Behavior on fillColor {
+            ColorAnimation {
+                duration: Appearance.anim.durations.normal
+                easing.type: Easing.BezierSpline
+                easing.bezierCurve: Appearance.anim.curves.standard
+            }
+        }
     }
 }