www.pudn.com > DirectX_demo.zip > DirectControl.cpp

// ------------------------------------------------------------------------- 
// CDirectControl Class 
// ------------------------------------------------------------------------- 
 
#include "stdafx.h" 
#include "DirectControl.h" 
 
// ------------------------------------------------------------------------- 
// CDirectControl Constructor 
// ------------------------------------------------------------------------- 
 
CDirectControl::CDirectControl() 
{ 
	m_pWnd				 = NULL; 
	m_Pos				 = NULL; 
	m_pDirectDraw		 = NULL; 
	m_pDirectSurfaceList = NULL; 
} 
 
// ------------------------------------------------------------------------- 
// CDirectControl Destructor 
// ------------------------------------------------------------------------- 
 
CDirectControl::~CDirectControl() 
{ 
	Release(); 
} 
 
// ------------------------------------------------------------------------- 
// CDirectControl Create Direct Control FullScreen 
// ------------------------------------------------------------------------- 
 
CWnd* CDirectControl::CreateFullScreen(int nXRes,int nYRes,int nBpp) 
{ 
	// Check Window Is Valid 
	m_pWnd = new CWnd; 
	if (!m_pWnd->CreateEx(NULL,AfxRegisterWndClass(CS_DBLCLKS),"",WS_POPUP,CRect(0,0,1,1),NULL,NULL)) 
		return NULL; 
 
	if (!IsWindow(m_pWnd->m_hWnd)) 
		return NULL; 
 
	// Create Direct Draw Object 
	m_pDirectDraw = new CDirectDraw; 
	if (!m_pDirectDraw->Create(m_pWnd,nXRes,nYRes,nBpp)){ 
		Release(); 
		return NULL; 
	} 
 
	// Create Direct Surfaces Object 
	m_pDirectSurfaceList = new CDirectSurfaceList; 
 
	return m_pWnd; 
} 
 
// ------------------------------------------------------------------------- 
// CDirectControl Create Off-Screen Surface 
// ------------------------------------------------------------------------- 
 
BOOL CDirectControl::CreateOffScreenSurface(LPCTSTR szIdentifier,int nWidth,int nHeight) 
{ 
	if (!m_pDirectDraw || !m_pDirectSurfaceList) 
		return Error("CreateOffScreenSurface Called Without Creating DirectDraw Object"); 
 
	CDirectSurface* pSurface = new CDirectSurface; 
	 
	pSurface->Create(m_pDirectDraw->GetDirectDraw(),nWidth,nHeight); 
	pSurface->SetIdentifier(szIdentifier); 
	pSurface->Clear(10); 
	pSurface->SetRender(FALSE); 
	 
	m_pDirectSurfaceList->AddTail(pSurface); 
 
	return TRUE; 
} 
 
// ------------------------------------------------------------------------- 
// CDirectControl Create Off-Screen Surface From Resource Bitmap 
// ------------------------------------------------------------------------- 
 
BOOL CDirectControl::CreateOffScreenSurface(LPCTSTR szIdentifier,UINT uiResBmpId) 
{ 
	if (!m_pDirectDraw || !m_pDirectSurfaceList) 
		return Error("CreateOffScreenSurface Called Without Creating DirectDraw Object"); 
 
	CDirectSurface* pSurface = new CDirectSurface; 
	 
	pSurface->Create(m_pDirectDraw->GetDirectDraw(),uiResBmpId); 
	pSurface->SetIdentifier(szIdentifier); 
	pSurface->SetRender(FALSE); 
 
	m_pDirectSurfaceList->AddTail(pSurface); 
 
	return TRUE; 
} 
 
// ------------------------------------------------------------------------- 
// CDirectControl Get Surface 
// ------------------------------------------------------------------------- 
 
CDirectSurface* CDirectControl::GetSurface(LPCTSTR szIdentifier) 
{ 
	if (!m_pDirectSurfaceList) 
		return NULL; 
 
	m_Pos = m_pDirectSurfaceList->GetHeadPosition(); 
	while (m_Pos){ 
		CDirectSurface *pSurface = m_pDirectSurfaceList->GetNext(m_Pos); 
		if ((CString)pSurface->GetIdentifier() == (CString)szIdentifier) 
			return pSurface; 
	} 
	return NULL; 
} 
 
// ------------------------------------------------------------------------- 
// CDirectControl Release 
// ------------------------------------------------------------------------- 
 
void CDirectControl::Release() 
{ 
	if (m_pDirectSurfaceList){ 
		m_Pos = m_pDirectSurfaceList->GetHeadPosition(); 
		while (m_Pos) 
			delete m_pDirectSurfaceList->GetNext(m_Pos); 
		delete m_pDirectSurfaceList; 
		m_pDirectSurfaceList = NULL; 
	} 
	if (m_pDirectDraw){ 
		delete m_pDirectDraw; 
		m_pDirectDraw = NULL; 
	} 
	if (m_pWnd){ 
		m_pWnd->DestroyWindow(); 
		delete m_pWnd; 
		m_pWnd = NULL; 
	} 
} 
 
// ------------------------------------------------------------------------- 
// CDirectControl Render 
// ------------------------------------------------------------------------- 
 
BOOL CDirectControl::Render(BOOL bClearFirst,BOOL bRenderSurfaces,BOOL bRenderOSB) 
{ 
	if (m_pDirectDraw && m_pDirectSurfaceList){ 
		// Clear Buffer 
		if (bClearFirst) 
			m_pDirectDraw->Clear(0); 
 
		// Draw Renderable Surfaces 
		if (bRenderSurfaces){ 
			m_Pos = m_pDirectSurfaceList->GetHeadPosition(); 
			while (m_Pos){ 
				CDirectSurface *pSurface = m_pDirectSurfaceList->GetNext(m_Pos); 
				if (pSurface && pSurface->IsRenderable()) 
					m_pDirectDraw->RenderSurface(pSurface->GetSurface(),pSurface->GetXPosition(),pSurface->GetYPosition()); 
			} 
		} 
 
		// Render Back Buffer 
		if (bRenderOSB) 
			m_pDirectDraw->Render(); 
 
		return TRUE; 
	} 
	return FALSE; 
}