Adding template project

vendor/rmlui_backend/RmlUi_Platform_SFML.h

@@ -0,0 +1,60 @@
+#pragma once
+
+#include <RmlUi/Core/Input.h>
+#include <RmlUi/Core/SystemInterface.h>
+#include <RmlUi/Core/Types.h>
+#include <SFML/Graphics.hpp>
+#include <SFML/System.hpp>
+#include <SFML/Window.hpp>
+
+class SystemInterface_SFML : public Rml::SystemInterface {
+public:
+	SystemInterface_SFML();
+
+	// Optionally, provide or change the window to be used for setting the mouse cursors.
+	// @lifetime Any window provided here must be destroyed before the system interface.
+	// @lifetime The currently active window must stay alive until after the call to Rml::Shutdown.
+	void SetWindow(sf::RenderWindow* window);
+
+	// -- Inherited from Rml::SystemInterface  --
+
+	double GetElapsedTime() override;
+
+	void SetMouseCursor(const Rml::String& cursor_name) override;
+
+	void SetClipboardText(const Rml::String& text) override;
+	void GetClipboardText(Rml::String& text) override;
+
+private:
+	sf::Clock timer;
+	sf::RenderWindow* window = nullptr;
+
+	struct Cursors {
+		Cursors();
+		sf::Cursor cursor_default;
+		sf::Cursor cursor_move;
+		sf::Cursor cursor_pointer;
+		sf::Cursor cursor_resize;
+		sf::Cursor cursor_cross;
+		sf::Cursor cursor_text;
+		sf::Cursor cursor_unavailable;
+	};
+	Rml::UniquePtr<Cursors> cursors;
+};
+
+/**
+    Optional helper functions for the SFML platform.
+ */
+namespace RmlSFML {
+
+// Applies input on the context based on the given SFML event.
+// @return True if the event is still propagating, false if it was handled by the context.
+bool InputHandler(Rml::Context* context, const sf::Event& ev);
+
+// Converts the SFML key to RmlUi key.
+Rml::Input::KeyIdentifier ConvertKey(sf::Keyboard::Key sfml_key);
+
+// Returns the active RmlUi key modifier state.
+int GetKeyModifierState();
+
+} // namespace RmlSFML