add iframe ui element

src/graphics/ui/elements/InlineFrame.hpp

@@ -0,0 +1,23 @@
+#pragma once
+
+#include "Container.hpp"
+
+class UiDocument;
+
+namespace gui {
+    class InlineFrame : public Container {
+    public:
+        explicit InlineFrame(GUI& gui);
+        virtual ~InlineFrame();
+
+        void setSrc(const std::string& src);
+        void setDocument(const std::shared_ptr<UiDocument>& document);
+
+        void act(float delta) override;
+        void setSize(glm::vec2 size) override;
+    private:
+        std::string src;
+        std::shared_ptr<UiDocument> document;
+        std::shared_ptr<UINode> root;
+    };
+}