Window.h

#pragma once
#include "Core/Common/CommonHeaders.h"
#include "Core/Input/Input.h"
#include <map>
 
namespace Nui
{
    class Window
    {
    public:
 
        enum class Style
        {
            Windowed,
            
            WindowedFullscreen,
 
            Borderless,
 
            BorderlessFullscreen,
        };
 
        struct Size
        {
            I32 X;
 
            I32 Y;
        };
        
#define NUI_WNDPROC_ARGS Nui::Window*, UINT, WPARAM, LPARAM
#define NUI_WNDPROC_NAMED_ARGS Nui::Window* window, UINT uMsg, WPARAM wParam, LPARAM lParam
        using WndCallback = std::function<LRESULT(NUI_WNDPROC_ARGS)>;
 
    public:
 
        explicit Window(Window::Style style, WStringView title, Window::Size size = { 1280, 720 });
        
        virtual ~Window();
 
        HWND GetHWND() const;
 
        HINSTANCE GetHinstance() const;
 
        Size GetClientSize() const;
 
        void SetWindowTitle(WString title);
 
        bool Maximized() const;
 
        bool Focused() const;
        
        bool WantsToClose() const;
 
        void AddCallback(U32 msg, WndCallback callback);
 
    private:
        void AdjustMaximizedClientRect(RECT& rect);
 
        void MakeWindow();
 
        LRESULT MessageRouter(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam);
        
        static LRESULT WINAPI WndProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam);
        
        LRESULT MessageHandler(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam);
        
        LRESULT HitTest(POINT cursor);
 
    private:
        HWND      m_hWnd;
 
        HINSTANCE m_hInstance;
        
        Style     m_style;
 
        Size      m_size;
 
        WString   m_title;
 
        bool m_isFocused;
 
        std::map<U32, WndCallback> m_callbacks;
    };
}