charcoal/OpenGLEngine/Window.h

#pragma once

#include <Windows.h>

#include "InputManager.h"

enum MessageResponse {
	UNSET,
	NO_MESSAGE,
	HANDLED_MESSAGE,
	QUIT_MESSAGE
};

// A class to create a window in windows.
class Window
{
public:
	Window(const char* class_name, HINSTANCE h_instance);
	~Window();

	LRESULT CALLBACK wnd_proc(HWND h_wnd, UINT msg, WPARAM w_param, LPARAM l_param);

	// Registers m_wc with windows.
	bool register_class();

	// Creates the window
	// Use -1 for x and/or y to specify centered relative to the screen.
	bool create_window(const char* title, int x, int y, int w, int h);

	// Peeks the next message for the window, translates it, and then
	// dispatches it.
	// Returns true for a regular message. False for an exit message.
	// When the message is an exit message, the message will not be translated
	// or dispatched.
	MessageResponse handle_message();

	// Calls ShowWindow on the HWND
	void show(int cmd_show);

	// Calls UpdateWindow on the HWND
	void update();

	// Swaps the window's buffers
	void swap();

	// Calls CloseWindow on the HWND
	void close();

	// Sets the OpenGL Rendering Context
	void set_h_glrc(HGLRC h_glrc);

	// Returns the HWND
	HWND get_h_wnd();

	// Returns the Device Context
	HDC get_h_dc();

	// Returns the OpenGL Rendering Context
	HGLRC get_h_glrc();

	// Returns the InputManager
	const InputManager& get_input_manager();

private:
	const char* m_class_name;

	HINSTANCE m_h_instance = nullptr;
	WNDCLASSEX m_wc;
	HWND m_h_wnd = nullptr;
	HDC m_h_dc = nullptr; // The Device Context
	HGLRC m_h_glrc = nullptr; // The OpenGL Rendering Context (Extra variable used by application)

	InputManager m_input_manager;
};