// SDKSample.cpp : Defines the entry point for the application.
//
// Sample for CE Graphics Library

// Created by James, copyright 2001.
// Bug report jiet@msn.com
// Thanks.


#include "stdafx.h"
#include "SDKSample.h"
#include <commctrl.h>

#include <cegl.h>  // Include CE Graphics library

#define MAX_LOADSTRING 100

// Global Variables:
HINSTANCE			hInst;			// The current instance
HWND				hwndCB;			// The command bar handle

CCEDraw             m_ceDraw;

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


void Render( void )
{
	POINT pt[5] ={ { 140, 100 }, { 70,120 }, { 104, 150 }, { 210, 122 }, { 75, 200 } };
	// Create the ce pen object...
	CCEPen cePen;
	cePen.CreatePen( 1, 1, m_ceDraw.ConvertColor( 255, 0, 0 ) ); // Convert RGB color to CE support Color
	// Select it to the graphics system 
	m_ceDraw.SetGDIObject( &cePen );

	// Create the ce brush object...
	CCEBrush ceBrush1, ceBrush2;
	ceBrush1.CreateBrush( 1, m_ceDraw.ConvertColor( 200, 200, 100 ), 1 );
	ceBrush2.CreateBrush( 1, m_ceDraw.ConvertColor( 0, 240, 0 ), 1 );
	// Select it to the graphics system 
	m_ceDraw.SetGDIObject( &ceBrush1 );

	// Begin Draw
	m_ceDraw.BeginDraw();
	m_ceDraw.Clear( (DWORD)255 );  // Clear screen use white color
	
	m_ceDraw.DrawLine( 1, 1, 100, 100 );  // Draw line
	
	m_ceDraw.DrawRect( 10, 10, 110, 80 ); // Draw Rect
	
	m_ceDraw.FillRect( 30, 30, 50, 50 );  // Fill Rect
	
	m_ceDraw.SetGDIObject( &ceBrush2 );   // Select another color brush
	m_ceDraw.FillRect( 40, 40, 100, 100, 0.4 ); // fill Rect with alpha blend

	m_ceDraw.FillPolygon( pt, 5 );   // Draw an polygon
	m_ceDraw.SetGDIObject( &ceBrush1 );   // Select another color brush
	m_ceDraw.FillPolygon( pt, 5, 40, 40 ); // Draw an polygon 


	CCEBitmap ceBmp1,ceBmp2;
	ceBmp1.LoadBitmap( &m_ceDraw, L"windows\\wcelogo1.gif" );
	ceBmp2.LoadBitmap( &m_ceDraw, L"windows\\welcomehead.gif" );
	ceBmp2.BitBlt( &m_ceDraw, 1, 80, 0, 0, 0, 0, SRCALPHA, 0.6f );  // Draw bitmap with alpha blend
	ceBmp1.BitBlt( &m_ceDraw, 1, 200, 0, 0, 0, 0, SRCALPHA, 0.6f );

	POINT ptText = { 1, 300 };
	m_ceDraw.DrawText( &ptText, "Windows CE高速圖形庫!", 16, 1 );  // Draw text with pen color
	
	// End Draw
	m_ceDraw.EndDraw();
	m_ceDraw.Flip();  // Flip the back buffer to the video buffer
}
int WINAPI WinMain(	HINSTANCE hInstance,
					HINSTANCE hPrevInstance,
					LPTSTR    lpCmdLine,
					int       nCmdShow)
{
	MSG msg;
	HACCEL hAccelTable;

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

	hAccelTable = LoadAccelerators(hInstance, (LPCTSTR)IDC_SDKSAMPLE);

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

	return msg.wParam;
}

//
//  FUNCTION: MyRegisterClass()
//
//  PURPOSE: Registers the window class.
//
//  COMMENTS:
//
//    It is important to call this function so that the application 
//    will get 'well formed' small icons associated with it.
//
ATOM MyRegisterClass(HINSTANCE hInstance, LPTSTR szWindowClass)
{
	WNDCLASS	wc;

    wc.style			= CS_HREDRAW | CS_VREDRAW;
    wc.lpfnWndProc		= (WNDPROC) WndProc;
    wc.cbClsExtra		= 0;
    wc.cbWndExtra		= 0;
    wc.hInstance		= hInstance;
    wc.hIcon			= LoadIcon(hInstance, MAKEINTRESOURCE(IDI_SDKSAMPLE));
    wc.hCursor			= 0;
    wc.hbrBackground	= (HBRUSH) GetStockObject(WHITE_BRUSH);
    wc.lpszMenuName		= 0;
    wc.lpszClassName	= szWindowClass;

	return RegisterClass(&wc);
}

//
//  FUNCTION: InitInstance(HANDLE, 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)
{
	HWND	hWnd;
	TCHAR	szTitle[MAX_LOADSTRING];			// The title bar text
	TCHAR	szWindowClass[MAX_LOADSTRING];		// The window class name

	hInst = hInstance;		// Store instance handle in our global variable
	// Initialize global strings
	LoadString(hInstance, IDC_SDKSAMPLE, szWindowClass, MAX_LOADSTRING);
	MyRegisterClass(hInstance, szWindowClass);

	LoadString(hInstance, IDS_APP_TITLE, szTitle, MAX_LOADSTRING);
	hWnd = CreateWindow(szWindowClass, szTitle, WS_VISIBLE,
		0, 0, GetSystemMetrics(SM_CXSCREEN), GetSystemMetrics(SM_CYSCREEN), NULL, NULL, hInstance, NULL);

	if (!hWnd)
	{	
		return FALSE;
	}


	// Create the CE Grahpics Library
	m_ceDraw.Create( hWnd );
	

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

	return TRUE;
}

//
//  FUNCTION: WndProc(HWND, unsigned, WORD, LONG)
//
//  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)
{
	HDC hdc;
	int wmId, wmEvent;
	PAINTSTRUCT ps;
	TCHAR szHello[MAX_LOADSTRING];

	switch (message) 
	{
		case WM_COMMAND:
			wmId    = LOWORD(wParam); 
			wmEvent = HIWORD(wParam); 
			// Parse the menu selections:
			switch (wmId)
			{
				case IDM_HELP_ABOUT:
				   DialogBox(hInst, (LPCTSTR)IDD_ABOUTBOX, hWnd, (DLGPROC)About);
				   break;
				case IDM_FILE_EXIT:
				   DestroyWindow(hWnd);
				   break;
				default:
				   return DefWindowProc(hWnd, message, wParam, lParam);
			}
			break;
		case WM_CREATE:
			break;
		case WM_PAINT:
			RECT rt;
			hdc = BeginPaint(hWnd, &ps);
			GetClientRect(hWnd, &rt);
			LoadString(hInst, IDS_HELLO, szHello, MAX_LOADSTRING);
			DrawText(hdc, szHello, _tcslen(szHello), &rt, 
				DT_SINGLELINE | DT_VCENTER | DT_CENTER);
			EndPaint(hWnd, &ps);

			Render();  // Render screen
			break;
		case WM_DESTROY:
			CommandBar_Destroy(hwndCB);
			PostQuitMessage(0);
			break;
		case WM_KEYDOWN:
			PostMessage(hWnd,WM_DESTROY,0,0);
			break;
		default:
			return DefWindowProc(hWnd, message, wParam, lParam);
   }
   return 0;
}

// Mesage handler for the About box.
LRESULT CALLBACK About(HWND hDlg, UINT message, WPARAM wParam, LPARAM lParam)
{
	RECT rt, rt1;
	int DlgWidth, DlgHeight;	// dialog width and height in pixel units
	int NewPosX, NewPosY;

	switch (message)
	{
		case WM_INITDIALOG:
			// trying to center the About dialog
			if (GetWindowRect(hDlg, &rt1)) {
				GetClientRect(GetParent(hDlg), &rt);
				DlgWidth	= rt1.right - rt1.left;
				DlgHeight	= rt1.bottom - rt1.top ;
				NewPosX		= (rt.right - rt.left - DlgWidth)/2;
				NewPosY		= (rt.bottom - rt.top - DlgHeight)/2;
				
				// if the About box is larger than the physical screen 
				if (NewPosX < 0) NewPosX = 0;
				if (NewPosY < 0) NewPosY = 0;
				SetWindowPos(hDlg, 0, NewPosX, NewPosY,
					0, 0, SWP_NOZORDER | SWP_NOSIZE);
			}
			return TRUE;

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