Starting metal backend

src/Engine/Graphics/Metal/Window.h

@@ -0,0 +1,72 @@
+#pragma once
+#include "Graphics.h"
+#include "Graphics/Window.h"
+#include "Resources.h"
+
+#define GLFW_INCLUDE_NONE
+#include <GLFW/glfw3.h>
+#define GLFW_EXPOSE_NATIVE_COCOA
+#include <GLFW/glfw3native.h>
+
+#include <Metal/Metal.hpp>
+#include <QuartzCore/CAMetalLayer.hpp>
+#include <QuartzCore/QuartzCore.hpp>
+
+namespace Seele
+{
+namespace Metal
+{
+class Window : public Gfx::Window
+{
+public:
+    Window(PGraphics graphics, const WindowCreateInfo& createInfo);
+    virtual ~Window();
+    virtual void pollInput() override;
+    virtual void beginFrame() override;
+    virtual void endFrame() override;
+    virtual Gfx::PTexture2D getBackBuffer() override;
+    virtual void onWindowCloseEvent() override;
+    virtual void setKeyCallback(std::function<void(KeyCode, InputAction, KeyModifier)> callback) override;
+    virtual void setMouseMoveCallback(std::function<void(double, double)> callback) override;
+    virtual void setMouseButtonCallback(std::function<void(MouseButton, InputAction, KeyModifier)> callback) override;
+    virtual void setScrollCallback(std::function<void(double, double)> callback) override;
+    virtual void setFileCallback(std::function<void(int, const char**)> callback) override;
+    virtual void setCloseCallback(std::function<void()> callback) override;
+    virtual void setResizeCallback(std::function<void(uint32, uint32)> callback) override;
+    
+    void keyPress(KeyCode code, InputAction action, KeyModifier modifier);
+    void mouseMove(double x, double y);
+    void mouseButton(MouseButton button, InputAction action, KeyModifier modifier);
+    void scroll(double x, double y);
+    void fileDrop(int num, const char** files);
+    void close();
+    void resize(int width, int height);
+private:
+    PGraphics graphics;
+    WindowCreateInfo preferences;
+    GLFWwindow* windowHandle;
+    NSWindow* metalWindow;
+    CAMetalLayer* metalLayer;
+    CA::MetalDrawable* drawable;
+
+    std::function<void(KeyCode, InputAction, KeyModifier)> keyCallback;
+    std::function<void(double, double)> mouseMoveCallback;
+    std::function<void(MouseButton, InputAction, KeyModifier)> mouseButtonCallback;
+    std::function<void(double, double)> scrollCallback;
+    std::function<void(int, const char**)> fileCallback;
+    std::function<void()> closeCallback;
+    std::function<void(uint32, uint32)> resizeCallback;
+};
+DEFINE_REF(Window);
+class Viewport : public Gfx::Viewport
+{
+public:
+    Viewport(PWindow owner, const ViewportCreateInfo& createInfo);
+    virtual ~Viewport();
+    virtual void resize(uint32 newX, uint32 newY);
+    virtual void move(uint32 newOffset, uint32 newOffsetY);
+private:
+    Rect viewport;
+};
+} // namespace Metal
+} // namespace Seele