More properties, cleanup

src/commonMain/kotlin/nl/astraeus/css/properties/Image.kt

@@ -11,3 +11,48 @@ class Image(
         fun inherit() = Image("inherit")
     }
 }
+
+class ImageRepeat(
+    value: String
+) : CssProperty(value) {
+
+    companion object {
+        fun stretch(url: String) = Image("stretch")
+        fun repeat() = Image("repeat")
+        fun round() = Image("round")
+        fun initial() = Image("initial")
+        fun inherit() = Image("inherit")
+    }
+
+}
+
+class ImageSlice(
+    value: String
+) : CssProperty(value) {
+
+    companion object {
+        fun nr(nr: Int) = Image("$nr")
+        fun perc(perc: Int) = Image("$perc%")
+        fun perc(perc: Double) = Image("$perc%")
+        fun stretch(url: String) = Image("stretch")
+        fun repeat() = Image("repeat")
+        fun fill() = Image("fill")
+        fun initial() = Image("initial")
+        fun inherit() = Image("inherit")
+    }
+
+}
+
+class ImageSource(
+    value: String
+) : CssProperty(value) {
+
+    companion object {
+        fun none() = ImageSource("none")
+        fun text(txt: String) = ImageSource(txt)
+        fun image(url: String) = ImageSource("'$url'")
+        fun initial() = ImageSource("initial")
+        fun inherit() = ImageSource("inherit")
+    }
+
+}