demopanel.cpp

模拟电子课程的教学演示程序

// DemoPanel.cpp : implementation file
//

#include "stdafx.h"
#include "elecdemo.h"
#include "DemoPanel.h"
#include "mmsystem.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

/////////////////////////////////////////////////////////////////////////////
// CDemoPanel
LPCTSTR CDemoPanel::m_lpszClassName = NULL;


CDemoPanel::CDemoPanel()
{
	m_xStartPos=m_xStartPos=0;
	m_nSpeed=80;
	m_iCurPage=m_iOldPage=0;
}

CDemoPanel::~CDemoPanel()
{
	for(int i=0;i<m_PageList.GetSize();i++)
	{
		PAGEINFO *pi=m_PageList[i];

		if (m_PageList[i]->pPage && m_PageList[i]->bAutoDestroy)
		{
			m_PageList[i]->pPage->DestroyWindow();
			delete m_PageList[i]->pPage;
		}
		delete m_PageList[i];
	}
	m_PageList.RemoveAll();

}


BEGIN_MESSAGE_MAP(CDemoPanel, CWnd)
	//{{AFX_MSG_MAP(CDemoPanel)
	ON_WM_PAINT()
	ON_WM_TIMER()
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CDemoPanel message handlers
BOOL CDemoPanel::Create(DWORD dwExStyle, DWORD dwStyle, UINT nPlaceholderID,
				   CWnd* pParentWnd, UINT nID)
{
	RECT rect;
	pParentWnd->GetDlgItem(nPlaceholderID)->GetWindowRect(&rect);
	pParentWnd->ScreenToClient(&rect);
    m_rcClient=rect;
	return Create(dwExStyle, dwStyle, rect, pParentWnd, nID);
}
BOOL CDemoPanel::Create(DWORD dwExStyle, DWORD dwStyle, const RECT& rect, 
				   CWnd* pParentWnd, UINT nID)
{
	m_Parent=pParentWnd;

	// register window class & create CWnd object
	if (m_lpszClassName == NULL)
		m_lpszClassName = AfxRegisterWndClass(CS_HREDRAW|CS_VREDRAW);

	BOOL bResult = CreateEx(dwExStyle, m_lpszClassName, _T(""), dwStyle,
		rect.left, rect.top, rect.right - rect.left, rect.bottom - rect.top,
		pParentWnd->GetSafeHwnd(), (HMENU)nID, NULL );	

	m_Style=PANEL_RIGHT;
	return bResult;
}

void CDemoPanel::OnPaint() 
{
	CPaintDC dc(this); // device context for painting
	
	// Do not call CWnd::OnPaint() for painting messages
}


LRESULT CALLBACK CDemoPanel::WindowProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
	PAGEINFO* pi		= (PAGEINFO*)GetWindowLong(hWnd, GWL_USERDATA);
	CDemoPanel* _this	= (CDemoPanel*)GetWindowLong(hWnd, DWL_USER);

	switch (uMsg) 
	{

		case WM_LBUTTONDOWN: 
			{		
			::SetCapture(hWnd);
			}
		break;

		case WM_LBUTTONUP:
			::ReleaseCapture();
		break;

		case WM_MOUSEMOVE: 
			{
			}

		break;
	}



	return ::CallWindowProc(pi->pOldProc, hWnd, uMsg, wParam, lParam);
}
void CDemoPanel::AddPage(LPCTSTR caption,UINT nIDTemplate,CRuntimeClass*rtc,int order,BOOL bAutoDel)
{
	if (order<0||order>m_PageList.GetSize())
		order=m_PageList.GetSize();

	//Create Template
	ASSERT(rtc!=NULL);
	CDialog* pwndTemplate = (CDialog*)rtc->CreateObject();
	BOOL b = pwndTemplate->Create(nIDTemplate, this);
	if (!b)	{ delete pwndTemplate; return ; }
    pwndTemplate->MoveWindow(0,0,m_rcClient.Width(),m_rcClient.Height());

	ASSERT(pwndTemplate!=NULL);
	ASSERT(pwndTemplate->m_hWnd!=NULL);

	//SubClass Template window proc
	WNDPROC pOldProc = (WNDPROC)::SetWindowLong(pwndTemplate->m_hWnd, DWL_DLGPROC,
		(LONG)CDemoPanel::WindowProc);

 	//Add page at pagelist
	PAGEINFO*	pi = new PAGEINFO;
	pi->pPage	= pwndTemplate;
	pi->pOldProc		= pOldProc;
	pi->bAutoDestroy	= bAutoDel;

    m_PageList.Add(pi);
 
	//Set Window datas
	::SetWindowLong(pwndTemplate->m_hWnd, GWL_USERDATA,	(LONG)pi);
	::SetWindowLong(pwndTemplate->m_hWnd, DWL_USER,		(LONG)this);
}
int CDemoPanel::ShowPage(int i)
{
	if((i<0)||(i>=m_PageList.GetSize()))
		return -1;
    ::PlaySound((LPTSTR)IDR_SHOW,AfxGetInstanceHandle(),
		SND_RESOURCE|SND_ASYNC);
	SetStyle(m_Style);
	m_iOldPage=m_iCurPage;
	m_iCurPage=i;
	SetTimer(PANEL_TIMER,100,NULL);    
	return m_iOldPage;
}
void CDemoPanel::RecalLayout()
{
	int xPos=m_xStartPos;
	int yPos=m_yStartPos;
    
	//Update layout
	HDWP hdwp = BeginDeferWindowPos(m_PageList.GetSize());	//*3 for pwndButton+pwndTemplate+pwndGroupBox

	for (int i=0; i<m_PageList.GetSize(); i++)
	{
		PAGEINFO* pi = m_PageList[i];
		int x=0,y=0;
		if(m_iCurPage==i)
		{
			DeferWindowPos(hdwp, pi->pPage->m_hWnd, 0, xPos, yPos, 0, 0,SWP_NOZORDER|SWP_SHOWWINDOW
				|SWP_NOSIZE);
		}
		else if(i==m_iOldPage)
		{
			switch(m_Style)
			{
			case PANEL_UP:
				{
					x=0;
					y=m_yStartPos+m_rcClient.Height();
				}
				break;
			case PANEL_DOWN:
				{
					x=0;
					y=m_yStartPos-m_rcClient.Height();
				}
				break;
			case PANEL_LEFT:
				{
					x=m_xStartPos-m_rcClient.Width();
					y=0;
				}
				break;
			case PANEL_RIGHT:
				{
					x=m_xStartPos+m_rcClient.Width();
					y=0;
				}
				break;
			}
			DeferWindowPos(hdwp, pi->pPage->m_hWnd, 0, x, y, 0, 0,SWP_NOZORDER|SWP_SHOWWINDOW
				|SWP_NOSIZE);
		}
		else 
		{
			x=-m_rcClient.Width();
			DeferWindowPos(hdwp, pi->pPage->m_hWnd, 0, x, y, 0, 0,SWP_NOZORDER|SWP_HIDEWINDOW
				|SWP_NOSIZE);
		}
	}
	EndDeferWindowPos(hdwp);

	//Update Scroll Bar
	InvalidateRect(&m_rcClient, FALSE);
	UpdateWindow();
}

void CDemoPanel::OnTimer(UINT nIDEvent) 
{
	if(nIDEvent==PANEL_TIMER)
	{
		switch(m_Style)
		{
		case PANEL_UP:
			{
				m_yStartPos-=m_nSpeed;
				if(m_yStartPos<=0)
				{
					m_yStartPos=0;
					KillTimer(PANEL_TIMER);
				}
			}
			break;
		case PANEL_DOWN:
			{
				m_yStartPos+=m_nSpeed;
				if(m_yStartPos>=0)
				{
					m_yStartPos=0;
					KillTimer(PANEL_TIMER);
				}
			}
			break;
		case PANEL_LEFT:
			{
				m_xStartPos-=m_nSpeed;
				if(m_xStartPos<=0)
				{
					m_xStartPos=0;
					KillTimer(PANEL_TIMER);
				}
			}
			break;
		case PANEL_RIGHT:
			{
				m_xStartPos+=m_nSpeed;	
				
				if(m_xStartPos>=0)
				{
					m_xStartPos=0;
					KillTimer(PANEL_TIMER);
				}
				TRACE1("%d\n",m_xStartPos);
			}
			break;
		}
		RecalLayout();
	}
	CWnd::OnTimer(nIDEvent);
}
void CDemoPanel::SetSpeed(int nSpeed)
{
	if(nSpeed<=0)
		return;
	m_nSpeed=nSpeed;
}
void CDemoPanel::SetStyle(int style)
{
	if(style==PANEL_UP)
	{
		m_yStartPos=m_rcClient.Height();
		m_xStartPos=0;
	}
	else if(style==PANEL_DOWN)
	{
		m_yStartPos=-m_rcClient.Height();
		m_xStartPos=0;

	}
	else if(style==PANEL_LEFT)
	{
		m_xStartPos=m_rcClient.Width();
		m_yStartPos=0;
	}
	else
	{
		style=PANEL_RIGHT;
		m_xStartPos=-m_rcClient.Width();
		m_yStartPos=0;
	}
	m_Style=style;
}