axmol/cocos2dx/platform/win32/CCXEGLView_win32.cpp

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

http://www.cocos2d-x.org

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
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The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
****************************************************************************/

#include "CCXEGLView.h"

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

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

NS_CC_BEGIN;

//////////////////////////////////////////////////////////////////////////
// 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_eglNativeWindow || 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_eglNativeWindow, 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 * s_pMainWindow;
static const WCHAR * kWindowClassName = L"Cocos2dxWin32";

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

CCXEGLView::CCXEGLView()
: m_bCaptured(false)
, m_bOrientationInitVertical(false)
, m_bOrientationReverted(false)
, m_pDelegate(NULL)
, m_pEGL(NULL)
, m_hWnd(NULL)
, m_eInitOrientation(CCDeviceOrientationPortrait)
, m_fScreenScaleFactor(1.0f)
{
    m_pTouch    = new CCTouch;
    m_pSet      = new NSSet;
    m_tSizeInPoints.cx = m_tSizeInPoints.cy = 0;
    SetRectEmpty(&m_rcViewPort);
}

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

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_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);

		// 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
			0, 0,								                // Window Position
			0,                                                  // Window Width
			0,                                                  // Window Height
			NULL,												// No Parent Window
			NULL,												// No Menu
			hInstance,											// Instance
			NULL );

		CCX_BREAK_IF(! m_hWnd);

        m_eInitOrientation = CCDirector::sharedDirector()->getDeviceOrientation();
        m_bOrientationInitVertical = (CCDeviceOrientationPortrait == m_eInitOrientation
            || kCCDeviceOrientationPortraitUpsideDown == m_eInitOrientation) ? true : false;
        m_tSizeInPoints.cx = w;
        m_tSizeInPoints.cy = h;
        resize(w, h);

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

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

		s_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)
		{
            POINT pt = {LOWORD(lParam), HIWORD(lParam)};
            if (PtInRect(&m_rcViewPort, pt))
            {
                CCXLog("mlbd:(%d, %d)", pt.x, pt.y);
                m_bCaptured = true;
                m_pTouch->SetTouchInfo(0, (float)(pt.x - m_rcViewPort.left) / m_fScreenScaleFactor,
                    (float)(pt.y - m_rcViewPort.top) / m_fScreenScaleFactor);
                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)- m_rcViewPort.left) / m_fScreenScaleFactor,
                (float)(HIWORD(lParam) - m_rcViewPort.top) / m_fScreenScaleFactor);
            m_pDelegate->touchesMoved(m_pSet, NULL);
		}
		break;

	case WM_LBUTTONUP:
		if (m_bCaptured)
		{
			m_pTouch->SetTouchInfo(0, (float)(LOWORD(lParam)- m_rcViewPort.left) / m_fScreenScaleFactor,
                (float)(HIWORD(lParam) - m_rcViewPort.top) / m_fScreenScaleFactor);
			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::sharedDirector()->end();
		break;

	case WM_DESTROY:
		PostQuitMessage(0);
		break;

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

CGSize CCXEGLView::getSize()
{
    if (m_bOrientationReverted)
    {
        return CGSize((float)(m_tSizeInPoints.cy), (float)(m_tSizeInPoints.cx));
    }
    return CGSize((float)(m_tSizeInPoints.cx), (float)(m_tSizeInPoints.cy));
}

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

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

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

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

int CCXEGLView::setDeviceOrientation(int eOritation)
{
	do 
	{
		bool bVertical = (CCDeviceOrientationPortrait == eOritation
			|| kCCDeviceOrientationPortraitUpsideDown == eOritation) ? true : false;

		CCX_BREAK_IF(m_bOrientationReverted && bVertical != m_bOrientationInitVertical);
		CCX_BREAK_IF(! m_bOrientationReverted && bVertical == m_bOrientationInitVertical);

        m_bOrientationReverted = (bVertical == m_bOrientationInitVertical) ? false : true;

        // swap width and height
		RECT rc;
		GetClientRect(m_hWnd, &rc);
        resize(rc.bottom - rc.top, rc.right - rc.left);

	} while (0);

	return m_eInitOrientation;
}

void CCXEGLView::setViewPortInPoints(float x, float y, float w, float h)
{
    if (m_pEGL)
    {
        float factor = m_fScreenScaleFactor / CC_CONTENT_SCALE_FACTOR();
        glViewport((GLint)(x * factor) + m_rcViewPort.left,
            (GLint)(y * factor) + m_rcViewPort.top,
            (GLint)(w * factor),
            (GLint)(h * factor));
    }
}

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

void CCXEGLView::resize(int width, int height)
{
    if (! m_hWnd)
    {
        return;
    }

    RECT rcClient;
    GetClientRect(m_hWnd, &rcClient);
    if (rcClient.right - rcClient.left == width &&
        rcClient.bottom - rcClient.top == height)
    {
        return;
    }
    // calculate new window width and height
    rcClient.right = rcClient.left + width;
    rcClient.bottom = rcClient.top + height;
    AdjustWindowRectEx(&rcClient, GetWindowLong(m_hWnd, GWL_STYLE), false, GetWindowLong(m_hWnd, GWL_EXSTYLE));

    // change width and height
    SetWindowPos(m_hWnd, 0, 0, 0, rcClient.right - rcClient.left, 
        rcClient.bottom - rcClient.top, SWP_NOCOPYBITS | SWP_NOMOVE | SWP_NOOWNERZORDER | SWP_NOZORDER);

    if (m_pEGL)
    {
        m_pEGL->resizeSurface();
    }

    // calculate view port in pixels
    int viewPortW = (int)(m_tSizeInPoints.cx * m_fScreenScaleFactor);
    int viewPortH = (int)(m_tSizeInPoints.cy * m_fScreenScaleFactor);
    if (m_bOrientationReverted)
    {
        int tmp = viewPortW;
        viewPortW = viewPortH;
        viewPortH = tmp;
    }
    GetClientRect(m_hWnd, &rcClient);

    // calculate client new width and height
    int newW = rcClient.right - rcClient.left;
    int newH = rcClient.bottom - rcClient.top;

    // calculate new view port
    m_rcViewPort.left   = rcClient.left + (newW - viewPortW) / 2;
    m_rcViewPort.top    = rcClient.top + (newH - viewPortH) / 2;
    m_rcViewPort.right  = m_rcViewPort.left + viewPortW;
    m_rcViewPort.bottom = m_rcViewPort.top + viewPortH;
}

void CCXEGLView::centerWindow()
{
    if (! m_hWnd)
    {
        return;
    }

    RECT rcDesktop, rcWindow;
    GetWindowRect(GetDesktopWindow(), &rcDesktop);

    // substract the task bar
    HWND hTaskBar = FindWindow(TEXT("Shell_TrayWnd"), NULL);
    if (hTaskBar != NULL)
    {
        APPBARDATA abd;

        abd.cbSize = sizeof(APPBARDATA);
        abd.hWnd = hTaskBar;

        SHAppBarMessage(ABM_GETTASKBARPOS, &abd);
        SubtractRect(&rcDesktop, &rcDesktop, &abd.rc);
    }
    GetWindowRect(m_hWnd, &rcWindow);

    int offsetX = (rcDesktop.right - rcDesktop.left - (rcWindow.right - rcWindow.left)) / 2;
    offsetX = (offsetX > 0) ? offsetX : rcDesktop.left;
    int offsetY = (rcDesktop.bottom - rcDesktop.top - (rcWindow.bottom - rcWindow.top)) / 2;
    offsetY = (offsetY > 0) ? offsetY : rcDesktop.top;

    SetWindowPos(m_hWnd, 0, offsetX, offsetY, 0, 0, SWP_NOCOPYBITS | SWP_NOSIZE | SWP_NOOWNERZORDER | SWP_NOZORDER);
}

void CCXEGLView::setScreenScale(float factor)
{
    m_fScreenScaleFactor = factor;
}

bool CCXEGLView::canSetContentScaleFactor()
{
    return true;
}

void CCXEGLView::setContentScaleFactor(float contentScaleFactor)
{
    m_fScreenScaleFactor = contentScaleFactor;
    resize((int)(m_tSizeInPoints.cx * contentScaleFactor), (int)(m_tSizeInPoints.cy * contentScaleFactor));
}

CCXEGLView& CCXEGLView::sharedOpenGLView()
{
    CCX_ASSERT(s_pMainWindow);
    return *s_pMainWindow;
}

NS_CC_END;