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Visual C++

WaveEditView.cpp：源码内容
							// WaveEditView.cpp : implementation file
//
#include "stdafx.h"
#include "WaveEdit.h"
#include "WaveEditView.h"
#include "WaveEditDoc.h"
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif
/////////////////////////////////////////////////////////////////////////////
// CWaveEditView
IMPLEMENT_DYNCREATE(CWaveEditView, CFormView)
CWaveEditView::CWaveEditView()
	: CFormView(CWaveEditView::IDD)
{
	m_bPlaying = FALSE;
	m_bPaused = FALSE;
	m_bStopped = TRUE;
	m_bSvrTimerStopped = FALSE;
	//{{AFX_DATA_INIT(CWaveEditView)
		// NOTE: the ClassWizard will add member initialization here
	//}}AFX_DATA_INIT
}
CWaveEditView::~CWaveEditView()
{
}
void CWaveEditView::DoDataExchange(CDataExchange* pDX)
{
	CFormView::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CWaveEditView)
		// NOTE: the ClassWizard will add DDX and DDV calls here
	//}}AFX_DATA_MAP
}
BEGIN_MESSAGE_MAP(CWaveEditView, CFormView)
	//{{AFX_MSG_MAP(CWaveEditView)
	ON_COMMAND(ID_PAUSE, OnPause)
	ON_UPDATE_COMMAND_UI(ID_PAUSE, OnUpdatePause)
	ON_COMMAND(ID_PLAY, OnPlay)
	ON_UPDATE_COMMAND_UI(ID_PLAY, OnUpdatePlay)
	ON_COMMAND(ID_STOP, OnStop)
	ON_UPDATE_COMMAND_UI(ID_STOP, OnUpdateStop)
	ON_WM_TIMER()
	ON_WM_SETFOCUS()
	ON_WM_KILLFOCUS()
	ON_WM_CREATE()
	ON_WM_PAINT()
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()
/////////////////////////////////////////////////////////////////////////////
// CWaveEditView diagnostics
#ifdef _DEBUG
void CWaveEditView::AssertValid() const
{
	CFormView::AssertValid();
}
void CWaveEditView::Dump(CDumpContext& dc) const
{
	CFormView::Dump(dc);
}
#endif //_DEBUG
/////////////////////////////////////////////////////////////////////////////
// CWaveEditView message handlers
void CWaveEditView::OnPause() 
{
	m_bPaused = !m_bPaused;
	if (m_bPaused)
		KillTimer(1);
	else 
		SetTimer(1, 25, NULL);
	
}
void CWaveEditView::OnUpdatePause(CCmdUI* pCmdUI) 
{
	if (!m_bPlaying)
		pCmdUI->Enable(FALSE);
	else
		pCmdUI->SetCheck( m_bPaused);
	
}
void CWaveEditView::OnPlay() 
{
	SetTimer(1, 50, NULL);
	m_bPlaying = TRUE;
	m_bStopped = FALSE;
	
}
void CWaveEditView::OnUpdatePlay(CCmdUI* pCmdUI) 
{
	pCmdUI->Enable(!m_bPlaying);
	
}
void CWaveEditView::OnStop() 
{
	KillTimer(1);
	m_bPlaying = FALSE;
	m_bPaused = FALSE;
	m_bStopped = TRUE;
	m_ptCaretPos.x = rcClient.left;
	SetCaretPos(m_ptCaretPos);
}
void CWaveEditView::OnUpdateStop(CCmdUI* pCmdUI) 
{
	pCmdUI->Enable(!m_bStopped);
	
}
void CWaveEditView::OnInitialUpdate() 
{
	CFormView::OnInitialUpdate();
	
	SetCursor();
}
void CWaveEditView::OnTimer(UINT nIDEvent) 
{
	CWaveEditDoc* pDoc = (CWaveEditDoc*)GetDocument();
	ASSERT_VALID(pDoc);
	m_ptCaretPos.x = m_ptCaretPos.x + 2;
	if (m_ptCaretPos.x  > rcClient.right){
		pDoc->m_bSvrTimerStopped = TRUE;
		m_ptCaretPos.x = rcClient.left;
		m_bStopped = TRUE;
		m_bPaused = TRUE;
		m_bPlaying = FALSE;
		KillTimer(1);
	}
	
	SetCaretPos(m_ptCaretPos);
	pDoc->IsWaveEnd();
		
	CFormView::OnTimer(nIDEvent);
}
void CWaveEditView::OnSetFocus(CWnd* pNewWnd) 
{
	pNewWnd = NULL;
	//SetCursor();
			
}
void CWaveEditView::OnKillFocus(CWnd* pOldWnd) 
{
	pOldWnd = NULL; 
	//::DestroyCaret();
		
}
int CWaveEditView::OnCreate(LPCREATESTRUCT lpCreateStruct) 
{
	if (CFormView::OnCreate(lpCreateStruct) == -1)
		return -1;
	
		
	return 0;
}
void CWaveEditView::OnPaint() 
{
	CPaintDC dc(this); // device context for painting
	
	int amp;
	
	DrawBack(&dc);
				
	CPen* pOldPen;
	CPen pen (PS_SOLID, 0,  RGB(0,255,0));
	pOldPen = dc.SelectObject(&pen);
	GetClientRect(rcClient);
 
	for(int i = 0; i < rcClient.Width(); ++i){
		
		amp = rand()%(rcClient.Height() /3);
		dc.MoveTo (rcClient.left + i, rcClient.top + (rcClient.Height()/2) - amp);
		dc.LineTo (rcClient.left + i, rcClient.top + (rcClient.Height()/2) + amp);
	}
	
	dc.SelectObject(pOldPen);
	
	// Do not call CFormView::OnPaint() for painting messages
}
void CWaveEditView::DrawBack(CDC* pDC)
{
	
	pDC->SetBkColor(RGB (0,0,0));
    pDC->ExtTextOut (m_ptCaretOrigin.x, m_ptCaretOrigin.y,
        ETO_OPAQUE, rcClient, m_strInputText, NULL);
	
}
//ONLY gets called by the CLIENT app
void CWaveEditView::SetCursor()
{
	GetClientRect(rcClient);
	m_ptCaretOrigin.x = rcClient.left;
	m_ptCaretOrigin.y = rcClient.top;
	m_ptCaretPos = m_ptCaretOrigin;
	CreateSolidCaret (max (1, ::GetSystemMetrics (SM_CXBORDER)),
		rcClient.bottom - rcClient.top);
	
    SetCaretPos (m_ptCaretPos);
    ShowCaret ();
	
}
void CWaveEditView::SetPlay()
{
	SetTimer(1,50, NULL);
}
void CWaveEditView::SetPause()
{
	KillTimer(1);
	//SetCursor();
}
void CWaveEditView::SetStop()
{
	KillTimer(1);
	SetCursor();
}

						