Window.h

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#pragma once
 
#include <string>
#include <functional>
 
namespace Elevate {
    class Event;
 
    using EventCallbackFn = std::function<void(Event&)>;
 
    struct WindowData
    {
        std::string Title;
        unsigned int Width, Height;
        bool Focused;
        bool VSync;
 
        EventCallbackFn EventCallback;
    };
 
    struct WindowProps
    {
        std::string Title;
        unsigned int Width;
        unsigned int Height;
        bool VSync;
 
        WindowProps () : Title("ElevateEngine Dev"), Width(1280), Height(720), VSync(false) { }
 
        WindowProps(const std::string& title, unsigned int width, unsigned int height, bool vsync)
            : Title(title), Width(width), Height(height), VSync(vsync) { }
 
        // To get all the revelant data from a .config file written in json
        WindowProps(const std::string appConfigFilePath);
    };
 
    class Window
    {
    public:
        Window() = default;
        virtual ~Window() { }
 
        virtual void Init(const WindowProps& props);
        virtual void OnUpdate() = 0;
 
        virtual unsigned int GetWidth() const = 0;
        virtual unsigned int GetHeight() const = 0;
        virtual bool GetFocus() const = 0;
 
        // Window attributes
        virtual void SetEventCallback(const EventCallbackFn& callback) = 0;
        virtual void SetVSync(bool enabled) = 0;
        virtual bool IsVSync() const = 0;
 
        // todo let the user create this file
        static Window* Create(const WindowProps& props = WindowProps("app.config"));
 
        virtual double GetTime() const = 0;
 
        virtual void* GetNativeWindow() const = 0; // Ex: Get the GLFW window on Windows
 
        const WindowData& GetWindowData() const { return m_Data; }
        
        void SetWindowSize(unsigned int width, unsigned int height);
        void EventCallback(Event& event) { m_Data.EventCallback(event); }
    
    protected:
        WindowData m_Data;
    };
}