Move xml and svg to lower levels.

src/rendering/visual_elements/svg/SvgShapeElement.h

@@ -0,0 +1,29 @@
+#pragma once
+
+#include "SvgElement.h"
+#include "Color.h"
+#include "Transform.h"
+
+class SvgShapeElement : public SvgElement
+{
+public:
+    SvgShapeElement(const std::string& tagName);
+
+    Transform getTransform() const;
+    
+    bool hasTransform() const;
+
+    void setFill(const Color& fill);
+
+    void setNoFill();
+
+    void setStrokeWidth(double width);
+
+    void setStrokeColor(const Color& stroke);
+
+    void setNoStroke();
+
+private:
+    std::string getLabelledContent(const std::string& key, const std::string& content) const;
+    Point parsePoint(const std::string& pointString, double defaultVal = 0.0) const;
+};