axmol/cocos2dx/platform/win32/CCXEGLView_win32.cpp

/****************************************************************************
Copyright (c) 2010 cocos2d-x.org

http://www.cocos2d-x.org

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****************************************************************************/

#include "CCXEGLView.h"

#include "EGL/egl.h"
#include "gles/gl.h"

#include "Cocos2dDefine.h"
#include "NSSet.h"
#include "CCDirector.h"
#include "CCTouch.h"
#include "CCTouchDispatcher.h"

namespace cocos2d {

//////////////////////////////////////////////////////////////////////////
// impliment CCXEGL
//////////////////////////////////////////////////////////////////////////

class CCXEGL
{
public:
	~CCXEGL() 
	{
		if (EGL_NO_SURFACE != m_eglSurface)
		{
			eglDestroySurface(m_eglDisplay, m_eglSurface);
		}
		if (EGL_NO_CONTEXT != m_eglContext)
		{
			eglDestroyContext(m_eglDisplay, m_eglContext);
		}
		eglMakeCurrent(m_eglDisplay, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
		eglTerminate(m_eglDisplay);
		if (m_eglNativeDisplay)
		{
			ReleaseDC(m_eglNativeWindow, m_eglNativeDisplay);
		}
	}

	static CCXEGL * create(CCXEGLView * pWindow)
	{
		CCXEGL * pEGL = new CCXEGL;
		BOOL bSuccess = FALSE;
		do 
		{
			CCX_BREAK_IF(! pEGL);

			pEGL->m_eglNativeWindow = pWindow->getHWnd();

			pEGL->m_eglNativeDisplay = GetDC(pEGL->m_eglNativeWindow);

			EGLDisplay eglDisplay;
			CCX_BREAK_IF(EGL_NO_DISPLAY == (eglDisplay = eglGetDisplay(pEGL->m_eglNativeDisplay)));

			EGLint nMajor, nMinor;
			CCX_BREAK_IF(EGL_FALSE == eglInitialize(eglDisplay, &nMajor, &nMinor) || 1 != nMajor);

			const EGLint aConfigAttribs[] =
			{
				EGL_LEVEL,				0,
				EGL_SURFACE_TYPE,		EGL_WINDOW_BIT,
				EGL_RENDERABLE_TYPE,	EGL_OPENGL_ES2_BIT,
				EGL_NATIVE_RENDERABLE,	EGL_FALSE,
				EGL_DEPTH_SIZE,			16,
				EGL_NONE,
			};
			EGLint iConfigs;
			EGLConfig eglConfig;
			CCX_BREAK_IF(EGL_FALSE == eglChooseConfig(eglDisplay, aConfigAttribs, &eglConfig, 1, &iConfigs) 
				|| (iConfigs != 1));

			EGLContext eglContext;
			eglContext = eglCreateContext(eglDisplay, eglConfig, NULL, NULL);
			CCX_BREAK_IF(EGL_NO_CONTEXT == eglContext);

			EGLSurface eglSurface;
			eglSurface = eglCreateWindowSurface(eglDisplay, eglConfig, pEGL->m_eglNativeWindow, NULL);
			CCX_BREAK_IF(EGL_NO_SURFACE == eglSurface);

			CCX_BREAK_IF(EGL_FALSE == eglMakeCurrent(eglDisplay, eglSurface, eglSurface, eglContext));

			pEGL->m_eglDisplay = eglDisplay;
			pEGL->m_eglConfig  = eglConfig;
			pEGL->m_eglContext = eglContext;
			pEGL->m_eglSurface = eglSurface;
			bSuccess = TRUE;
		} while (0);

		if (! bSuccess)
		{
			CCX_SAFE_DELETE(pEGL);  
		}

		return pEGL;
	}

	void resizeSurface()
	{
		// 		if (! m_eglWnd || EGL_NO_DISPLAY == m_eglDisplay)
		// 		{
		// 			return;
		// 		}
		// 
		// 		// release old surface
		// 		if (EGL_NO_SURFACE != m_eglSurface)
		// 		{
		// 			eglDestroySurface(m_eglDisplay, m_eglSurface);
		// 			m_eglSurface = EGL_NO_SURFACE;
		// 		}
		// 
		// 		// create new surface and make current
		// 		m_eglSurface = eglCreateWindowSurface(m_eglDisplay, m_eglConfig, m_eglWnd, NULL);
		// 		eglMakeCurrent(m_eglDisplay, m_eglSurface, m_eglSurface, m_eglContext);
	}

	void swapBuffers()
	{
		if (EGL_NO_DISPLAY != m_eglDisplay)
		{
			eglSwapBuffers(m_eglDisplay, m_eglSurface);
		}
	}
private:
	CCXEGL() 
		: m_eglNativeWindow(NULL)
		, m_eglNativeDisplay(EGL_DEFAULT_DISPLAY)
		, m_eglDisplay(EGL_NO_DISPLAY)
		, m_eglConfig(0)
		, m_eglSurface(EGL_NO_SURFACE)
		, m_eglContext(EGL_NO_CONTEXT)
	{}

	EGLNativeWindowType     m_eglNativeWindow;
	EGLNativeDisplayType    m_eglNativeDisplay;
	EGLDisplay              m_eglDisplay;
	EGLConfig               m_eglConfig;
	EGLSurface              m_eglSurface;
	EGLContext              m_eglContext;
};

//////////////////////////////////////////////////////////////////////////
// impliment CCXEGLView
//////////////////////////////////////////////////////////////////////////
static CCXEGLView * pMainWindow;
static const WCHAR * kWindowClassName = L"Cocos2dxWin32";

static LRESULT CALLBACK _WindowProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
	if (pMainWindow && pMainWindow->getHWnd() == hWnd)
	{
		return pMainWindow->WindowProc(uMsg, wParam, lParam);
	}
	else
	{
		return DefWindowProc(hWnd, uMsg, wParam, lParam);
	}
}

CCXEGLView::CCXEGLView()
: m_bCaptured(false)
, m_pDelegate(NULL)
, m_pEGL(NULL)
, m_hWnd(NULL)
{
    m_pTouch    = new CCTouch;
    m_pSet      = new NSSet;
}

CCXEGLView::~CCXEGLView()
{
	release();
    delete m_pSet;
    delete m_pTouch;
    CCX_SAFE_DELETE(m_pDelegate);
}

bool CCXEGLView::Create(LPCTSTR pTitle, int w, int h)
{
	bool bRet = false;
	do 
	{
		CCX_BREAK_IF(m_hWnd);

		HINSTANCE hInstance = GetModuleHandle( NULL );
		WNDCLASS  wc;		// Windows Class Structure

		// Redraw On Size, And Own DC For Window.
		wc.style          = CS_NOCLOSE | CS_HREDRAW | CS_VREDRAW | CS_OWNDC;  
		wc.lpfnWndProc    = _WindowProc;					// WndProc Handles Messages
		wc.cbClsExtra     = 0;                              // No Extra Window Data
		wc.cbWndExtra     = 0;								// No Extra Window Data
		wc.hInstance      = hInstance;						// Set The Instance
		wc.hIcon          = LoadIcon( NULL, IDI_WINLOGO );	// Load The Default Icon
		wc.hCursor        = LoadCursor( NULL, IDC_ARROW );	// Load The Arrow Pointer
		wc.hbrBackground  = NULL;                           // No Background Required For GL
		wc.lpszMenuName   = NULL;                           // We Don't Want A Menu
		wc.lpszClassName  = kWindowClassName;               // Set The Class Name

		CCX_BREAK_IF(! RegisterClass(&wc) && 1410 != GetLastError());		

		// center window position
		RECT rcDesktop;
		GetWindowRect(GetDesktopWindow(), &rcDesktop);
		RECT rect = {(rcDesktop.right + rcDesktop.left - w) / 2, (rcDesktop.bottom + rcDesktop.top - h) / 2, 0, 0};
		rect.right = rect.left + w;
		rect.bottom = rect.top + h;
		AdjustWindowRectEx(&rect, WS_CAPTION | WS_POPUPWINDOW, false, WS_EX_APPWINDOW | WS_EX_WINDOWEDGE);

		// create window
		m_hWnd = CreateWindowEx(
			WS_EX_APPWINDOW | WS_EX_WINDOWEDGE,	// Extended Style For The Window
			kWindowClassName,									// Class Name
			pTitle,												// Window Title
			WS_CAPTION | WS_POPUPWINDOW,	// Defined Window Style
			rect.left, rect.top,								// Window Position
			rect.right - rect.left,                             // Window Width
			rect.bottom - rect.top,                             // Window Height
			NULL,												// No Parent Window
			NULL,												// No Menu
			hInstance,											// Instance
			NULL );

		CCX_BREAK_IF(! m_hWnd);

		// init egl
		m_pEGL = CCXEGL::create(this);

		if (! m_pEGL)
		{
			DestroyWindow(m_hWnd);
			m_hWnd = NULL;
			break;
		}

		ShowWindow(m_hWnd, SW_SHOW);
		pMainWindow = this;
		bRet = true;
	} while (0);

	return bRet;
}

LRESULT CCXEGLView::WindowProc(UINT message, WPARAM wParam, LPARAM lParam)
{
	PAINTSTRUCT ps;

	switch (message)
	{
	case WM_LBUTTONDOWN:
		if (m_pDelegate && m_pTouch && MK_LBUTTON == wParam)
		{
			m_bCaptured = true;
			m_pTouch->SetTouchInfo(0, (float)LOWORD(lParam), (float)HIWORD(lParam));
			m_pSet->addObject(m_pTouch);
			m_pDelegate->touchesBegan(m_pSet, NULL);
		}
		break;

	case WM_MOUSEMOVE:
		if (MK_LBUTTON == wParam && m_bCaptured)
		{
            m_pTouch->SetTouchInfo(0, (float)LOWORD(lParam), (float)HIWORD(lParam));
            m_pDelegate->touchesMoved(m_pSet, NULL);
		}
		break;

	case WM_LBUTTONUP:
		if (m_bCaptured)
		{
			m_pTouch->SetTouchInfo(0, (float)LOWORD(lParam), (float)HIWORD(lParam));
			m_pDelegate->touchesEnded(m_pSet, NULL);
			m_pSet->removeObject(m_pTouch);
			m_bCaptured = false;
		}
		break;

	case WM_PAINT:
		BeginPaint(m_hWnd, &ps);
		EndPaint(m_hWnd, &ps);
		break;

	case WM_CLOSE:
		CCDirector::getSharedDirector()->end();
		break;

	case WM_DESTROY:
		PostQuitMessage(0);
		break;

	default:
		return DefWindowProc(m_hWnd, message, wParam, lParam);
	}
	return 0;
}

CGSize CCXEGLView::getSize()
{
	RECT rc;
	GetClientRect(m_hWnd, &rc);
    return CGSize((float)(rc.right - rc.left), (float)(rc.bottom - rc.top));
}

CGRect CCXEGLView::getFrame()
{
	RECT rc;
	GetClientRect(m_hWnd, &rc);
	return (CGRect((float)rc.left, (float)rc.top, (float)(rc.right - rc.left), (float)(rc.bottom - rc.top)));
}

bool CCXEGLView::isOpenGLReady()
{
    return (NULL != m_pEGL);
}

void CCXEGLView::release()
{
    CCX_SAFE_DELETE(m_pEGL);
	if (m_hWnd)
	{
		DestroyWindow(m_hWnd);
		m_hWnd = NULL;
	}
	pMainWindow = NULL;
	UnregisterClass(kWindowClassName, GetModuleHandle(NULL));
}

void CCXEGLView::setTouchDelegate(EGLTouchDelegate * pDelegate)
{
    m_pDelegate = pDelegate;
}

void CCXEGLView::swapBuffers()
{
    if (m_pEGL)
    {
        m_pEGL->swapBuffers();
    }
}

HWND CCXEGLView::getHWnd()
{
	return m_hWnd;
}

}       // end of namespace cocos2d