// Win32Project_Chess.cpp : Defines the entry point for the application.
//

#include "stdafx.h"
#include "Win32Project_Chess.h"

#define MAX_LOADSTRING 100

#define IMAGES_FOLDER			L"C:\\cppChess\\"
const auto IMAGES_CHESS_BOARD = IMAGES_FOLDER"board.png";
#define IMAGES_CHESS_PIECES		IMAGES_FOLDER"pieces.png"

//using namespace Gdiplus;

// Global Variables:
HINSTANCE hInst;                                // current instance
WCHAR szTitle[MAX_LOADSTRING];                  // The title bar text
WCHAR szWindowClass[MAX_LOADSTRING];            // the main window class name

// Forward declarations of functions included in this code module:
ATOM                MyRegisterClass(HINSTANCE hInstance);
BOOL                InitInstance(HINSTANCE, int);
LRESULT CALLBACK    WndProc(HWND, UINT, WPARAM, LPARAM);
INT_PTR CALLBACK    About(HWND, UINT, WPARAM, LPARAM);

int APIENTRY wWinMain(_In_ HINSTANCE hInstance,
                     _In_opt_ HINSTANCE hPrevInstance,
                     _In_ LPWSTR    lpCmdLine,
                     _In_ int       nCmdShow)
{
    UNREFERENCED_PARAMETER(hPrevInstance);
    UNREFERENCED_PARAMETER(lpCmdLine);

    // TODO: Place code here.

    // Initialize global strings
    LoadStringW(hInstance, IDS_APP_TITLE, szTitle, MAX_LOADSTRING);
    LoadStringW(hInstance, IDC_WIN32PROJECT_CHESS, szWindowClass, MAX_LOADSTRING);
    MyRegisterClass(hInstance);

	ULONG_PTR gdipToken;
	Gdiplus::GdiplusStartupInput gdipStartupInput;
	//Gdiplus::GdiplusStartupOutput gdipStartupOutput;
	Gdiplus::GdiplusStartup(
		&gdipToken,
		&gdipStartupInput,
		nullptr // NULL
	);

    // Perform application initialization:
    if (!InitInstance (hInstance, nCmdShow))
    {
        return FALSE;
    }

    HACCEL hAccelTable = LoadAccelerators(hInstance, MAKEINTRESOURCE(IDC_WIN32PROJECT_CHESS));

    MSG msg;
    // Main message loop:
    while (GetMessage(&msg, nullptr, 0, 0))
    {
        if (!TranslateAccelerator(msg.hwnd, hAccelTable, &msg))
        {
            TranslateMessage(&msg);
            DispatchMessage(&msg);
        }
    }

	Gdiplus::GdiplusShutdown(gdipToken);

    return (int) msg.wParam;
}



//
//  FUNCTION: MyRegisterClass()
//
//  PURPOSE: Registers the window class.
//
ATOM MyRegisterClass(HINSTANCE hInstance)
{
    WNDCLASSEXW wcex;

    wcex.cbSize = sizeof(WNDCLASSEX);

    wcex.style          = CS_HREDRAW | CS_VREDRAW;
    wcex.lpfnWndProc    = WndProc;
    wcex.cbClsExtra     = 0;
    wcex.cbWndExtra     = 0;
    wcex.hInstance      = hInstance;
    wcex.hIcon          = LoadIcon(hInstance, MAKEINTRESOURCE(IDI_WIN32PROJECT_CHESS));
    wcex.hCursor        = LoadCursor(nullptr, IDC_ARROW);
    wcex.hbrBackground  = (HBRUSH)(COLOR_WINDOW+1);
    wcex.lpszMenuName   = MAKEINTRESOURCEW(IDC_WIN32PROJECT_CHESS);
    wcex.lpszClassName  = szWindowClass;
    wcex.hIconSm        = LoadIcon(wcex.hInstance, MAKEINTRESOURCE(IDI_SMALL));

    return RegisterClassExW(&wcex);
}

//
//   FUNCTION: InitInstance(HINSTANCE, int)
//
//   PURPOSE: Saves instance handle and creates main window
//
//   COMMENTS:
//
//        In this function, we save the instance handle in a global variable and
//        create and display the main program window.
//
BOOL InitInstance(HINSTANCE hInstance, int nCmdShow)
{
   hInst = hInstance; // Store instance handle in our global variable

   HWND hWnd = CreateWindowW(szWindowClass, szTitle, WS_OVERLAPPEDWINDOW & ~WS_THICKFRAME,
      CW_USEDEFAULT, 0, 900, 900, nullptr, nullptr, hInstance, nullptr);

   if (!hWnd)
   {
      return FALSE;
   }

   ShowWindow(hWnd, nCmdShow);
   UpdateWindow(hWnd);

   return TRUE;
}

//
//  FUNCTION: WndProc(HWND, UINT, WPARAM, LPARAM)
//
//  PURPOSE:  Processes messages for the main window.
//
//  WM_COMMAND  - process the application menu
//  WM_PAINT    - Paint the main window
//  WM_DESTROY  - post a quit message and return
//
//
LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
    switch (message)
    {
    case WM_COMMAND:
        {
            int wmId = LOWORD(wParam);
            // Parse the menu selections:
            switch (wmId)
            {
            case IDM_ABOUT:
                DialogBox(hInst, MAKEINTRESOURCE(IDD_ABOUTBOX), hWnd, About);
                break;
            case IDM_EXIT:
                DestroyWindow(hWnd);
                break;
            default:
                return DefWindowProc(hWnd, message, wParam, lParam);
            }
        }
        break;
    case WM_PAINT:
        {
            PAINTSTRUCT ps;
            HDC hdc = BeginPaint(hWnd, &ps);
            // TODO: Add any drawing code that uses hdc here...

			{
				auto gdipGraphics = Gdiplus::Graphics::FromHWND(hWnd);
				//Gdiplus::Graphics* gdipGraphics = new Gdiplus::Graphics(hWnd);

				auto imageBoard = Gdiplus::Image::FromFile(IMAGES_FOLDER"board.png");
				//Gdiplus::Image imageBoard(L"C:\\cppChess\\board.png");
				Gdiplus::Rect drawRect(10, 10, 800, 800);
				//gdipGraphics.DrawImage(&imageBoard, drawRect);
				//gdipGraphics->DrawImage(imageBoard, drawRect);
				gdipGraphics->DrawImage(imageBoard, 10, 10, 800, 800);
			}
            EndPaint(hWnd, &ps);
        }
        break;
	case WM_LBUTTONDOWN:
	{
		auto gdipGraphics = Gdiplus::Graphics::FromHWND(hWnd);

		//auto figurice = Gdiplus::Image::FromFile(L"C:\\cppChess\\pieces.png");
		auto figurice = Gdiplus::Image::FromFile(IMAGES_FOLDER"pieces.png");
		Gdiplus::Rect drawRect(20+1*100, 20, 80, 80);	// iscrtavanje u gornje lijevo polje (bijelo)
		Gdiplus::Rect pieceCoords;
		//if (pieceType == PIECE_TYPE::KNIGHT)
		if (true) // DEBUG
		{
			pieceCoords.X = 520; pieceCoords.Y = 170+1;
			pieceCoords.Width = 155; pieceCoords.Height = 170;
		}
		gdipGraphics->DrawImage(figurice, drawRect,
			pieceCoords.X, pieceCoords.Y, pieceCoords.Height, pieceCoords.Width,
			Gdiplus::Unit::UnitPixel);
	}
		break;
    case WM_DESTROY:
        PostQuitMessage(0);
        break;
    default:
        return DefWindowProc(hWnd, message, wParam, lParam);
    }
    return 0;
}

// Message handler for about box.
INT_PTR CALLBACK About(HWND hDlg, UINT message, WPARAM wParam, LPARAM lParam)
{
    UNREFERENCED_PARAMETER(lParam);
    switch (message)
    {
    case WM_INITDIALOG:
        return (INT_PTR)TRUE;

    case WM_COMMAND:
        if (LOWORD(wParam) == IDOK || LOWORD(wParam) == IDCANCEL)
        {
            EndDialog(hDlg, LOWORD(wParam));
            return (INT_PTR)TRUE;
        }
        break;
    }
    return (INT_PTR)FALSE;
}