simplemp3dlg.cpp

一些关于C++开发的多媒体制作书籍的源代码

					Play();
				}
			else
			{	
				AddFile();
				if (!Open(0))
					return;
				Play();
			}
	if (m_mcimp3.MCIIsPlaying())
		m_Play.SetCheck(true);
	else
		m_Play.SetCheck(false);
}

void CSimpleMP3Dlg::OnPrev() 
{
	// TODO: Add your control notification handler code here
	if (m_mcimp3.MCIIsOpened())
	{	m_mcimp3.MCISeekToStart();
		Play();
	}
}

void CSimpleMP3Dlg::OnSize(UINT nType, int cx, int cy) 
{
	CDialog::OnSize(nType, cx, cy);
	
	// TODO: Add your message handler code here
	CRect WinRect, ListRect;
	if (m_List)
	{	this->GetWindowRect(&WinRect);
		m_List.SetWindowPos(
			NULL,
			0,
			0,
			WinRect.Width()-this->m_iWidth,
			WinRect.Height()-this->m_iHeight, 
			SWP_NOMOVE | SWP_NOZORDER);
		m_List.Invalidate();
	}
}

void CSimpleMP3Dlg::OnStep() 
{
	// TODO: Add your control notification handler code here
	DWORD dwPos;
	BOOL bPlaying=m_mcimp3.MCIIsPlaying();

	m_mcimp3.MCIGetPos(&dwPos);
	dwPos+=5;
	if (dwPos<0 || dwPos>m_mcimp3.m_dwLength)
		dwPos=m_mcimp3.m_dwLength;
	m_mcimp3.MCISeekTo(dwPos);
	SetTime(m_bElapse ? dwPos : m_mcimp3.m_dwLength-dwPos);
	m_Slider.SetPos(dwPos);
	if (bPlaying)
		Play();
}

void CSimpleMP3Dlg::OnStop() 
{
	// TODO: Add your control notification handler code here
	if (!m_mcimp3.MCIIsOpened())
	{	m_Stop.SetCheck(false);
		return;
	}

//	if (!m_mcimp3.MCIIsPlaying())
//	{	m_Stop.SetCheck(true);
//		return;
//	}
	m_Stop.SetCheck(true);
	m_Play.SetCheck(false);
	m_Pause.SetCheck(false);
	Stop();
	m_mcimp3.MCISeekToStart();
	SetTime(0);
	m_Slider.SetPos(0);
}

void CSimpleMP3Dlg::OnSysCommand(UINT nID, LPARAM lParam)
{
	if ((nID & 0xFFF0) == SC_MINIMIZE)
	{
		this->ShowWindow(SW_HIDE);
		this->m_bIconized=true;
	}
	else if ((nID & 0xFFF0) == SC_RESTORE)
	{
		this->ShowWindow(SW_SHOW);
		this->SetActiveWindow();
		::SetForegroundWindow(this->GetSafeHwnd());
		this->m_bIconized=false;
	}
	else if ((nID & 0xFFF0) == SC_CLOSE)
	{
		this->Exit();
	}
	else
	{
		CDialog::OnSysCommand(nID, lParam);
	}
}

void CSimpleMP3Dlg::OnTime() 
{
	// TODO: Add your control notification handler code here
	DWORD dwPos;

	m_bElapse = !m_bElapse;
	if (m_mcimp3.MCIIsOpened())
	{
		if (m_mcimp3.MCIGetPos(&dwPos)!=0)
		{
			return;
		}
		SetTime(m_bElapse ? dwPos : m_mcimp3.m_dwLength-dwPos);
	}
}

void CSimpleMP3Dlg::OnTimer(UINT nIDEvent) 
{
	// TODO: Add your message handler code here and/or call default
	DWORD dwPos;
	int iNextID=0;

	if (m_mcimp3.MCIIsPlaying())
	{	if (m_mcimp3.MCIGetPos(&dwPos)!=0)
		{	KillTimer(nIDEvent);
			return;
		}
		SetTime(m_bElapse ? dwPos : m_mcimp3.m_dwLength-dwPos);
		m_Slider.SetPos(dwPos);
	}else
	{	SetTime(0);
		m_Slider.SetPos(0);
		if ((iNextID=GetNext())>=0)
		{	if (iNextID!=(int)m_iOpenedID)
			{	m_iOpenedID=iNextID;
				if (!Open(m_iOpenedID))
					return;
			}
			else
				m_mcimp3.MCISeekToStart();
			Play();
		}
	}
	CDialog::OnTimer(nIDEvent);
}

BOOL CSimpleMP3Dlg::PreTranslateMessage(MSG* pMsg)
{
	// CG: The following block was added by the ToolTips component.
	{
		// Let the ToolTip process this message.
		m_tooltip.RelayEvent(pMsg);
	}
	// 处理快捷键
	if (::TranslateAccelerator(this->GetSafeHwnd(), m_hAccTable, pMsg))
	{
		return(TRUE);
	}
	return CDialog::PreTranslateMessage(pMsg);	// CG: This was added by the ToolTips component.
}

// end of CSimpleMP3Dlg message handlers
/////////////////////////////////////////////////////////////////////////////

////////////////////////////////////////////////////////////////////////
/*
* 函数名称：AddDir
* 函数介绍：完成加入目录功能
* 输入参数：无
* 输出参数：无
* 返回值  ：无
*/
void CSimpleMP3Dlg::AddDir()
{
	CString strDirPath=_T("");
	int i;
	int iItemCount=m_List.GetCount();
	BROWSEINFO bi = {
		this->GetSafeHwnd(),
		NULL,
		strDirPath.GetBuffer(255),
		NULL,//_T("加入目录中的所有MP3文件"),
		0,
		NULL,
		NULL,
		0};

	ITEMIDLIST* piid = NULL;

	// call the shell function
	piid = :: SHBrowseForFolder(&bi);
	strDirPath.ReleaseBuffer();

	// process the result
	if (piid && ::SHGetPathFromIDList(piid, strDirPath.GetBuffer(255)))
	{
		strDirPath.ReleaseBuffer();
		i=iItemCount;
		m_List.AddDir(strDirPath.GetBuffer(255));
	}
	else
	{
		return;
	}

	// Release the ITEMIDLIST if we got one
	if (piid)
	{
		LPMALLOC lpMalloc;
		VERIFY(::SHGetMalloc(&lpMalloc) == NOERROR);
		lpMalloc->Free(piid);
		lpMalloc->Release();
	}
}

////////////////////////////////////////////////////////////////////////
/*
* 函数名称：CloseM3U
* 函数介绍：完成关闭M3U文件功能
* 输入参数：无
* 输出参数：无
* 返回值  ：无
*/
void CSimpleMP3Dlg::CloseM3U()
{
	m_mcimp3.MCIClose();
	m_Play.SetCheck(FALSE);
	m_Pause.SetCheck(FALSE);
	m_Stop.SetCheck(FALSE);
	m_iOpenedID=-1;
	m_Slider.SetPos(0);
	this->SetTime(0);
	m_Title.SetWindowText("无");
	CString strWinTitle;
	strWinTitle.LoadString(IDS_TITLE);
	m_pTrayIcon->ModifyTip(strWinTitle);

	m_strM3UPath=m_strDefaultDir+_T("\\Default");
	CString strTitle;
	strTitle.LoadString(IDS_TITLE);
	this->SetWindowText(strTitle);
	m_List.DeleteAllFiles();
}

////////////////////////////////////////////////////////////////////////
/*
* 函数名称：Exit
* 函数介绍：退出程序
* 输入参数：无
* 输出参数：无
* 返回值  ：无
*/
void CSimpleMP3Dlg::Exit()
{
	CDialog::OnCancel();
	DestroyWindow();
}

////////////////////////////////////////////////////////////////////////
/*
* 函数名称：GetNext
* 函数介绍：根据LOOP、REPEAT、RANDOM取得将要播放的下一首乐曲的ID(从0开始计算)
* 输入参数：无
* 输出参数：无
* 返回值  ：int, 返回ID值，若列表为空或出错，则返回-1
*/
int CSimpleMP3Dlg::GetNext()
{
	int iItemCount=m_List.GetCount();
	int iReturn=-1;

	if (iItemCount<=0)		//列表为空
		iReturn=-1;
	else
	{	if (m_Repeat.GetCheck())			//Repeat=true
		{	if (m_iOpenedID>=0 && m_iOpenedID<iItemCount)
				iReturn=m_iOpenedID;
			else
				iReturn=0;
		}else if (m_Random.GetCheck())	//Random=true
			iReturn=GetRandID(iItemCount);
		else if (m_iOpenedID!=iItemCount-1)//不是末一首
			iReturn=m_iOpenedID+1;
		else if (m_Loop.GetCheck())		//Loop=true
			iReturn=0;
	}
	return iReturn;
}

////////////////////////////////////////////////////////////////////////
/*
* 函数名称：GetPrev
* 函数介绍：根据LOOP、REPEAT、RANDOM取得将要播放的上一首乐曲的ID(从0开始计算)
* 输入参数：无
* 输出参数：无
* 返回值  ：int, 返回ID值，若列表为空或出错，则返回-1
*/
int CSimpleMP3Dlg::GetPrev()
{
	int iItemCount=m_List.GetCount();
	int iReturn=-1;

	if (iItemCount==0)		//列表为空
		iReturn=-1;
	else
	{	if (m_Repeat.GetCheck())			//Repeat=true
		{	if (m_iOpenedID>=0 && m_iOpenedID<iItemCount)
				iReturn=m_iOpenedID;
			else
				iReturn=0;
		}else if (m_Random.GetCheck())	//Random=true
			iReturn=GetRandID(iItemCount);
		else if (m_iOpenedID!=0)			//不是第一首
			iReturn=m_iOpenedID-1;
		else if (m_Loop.GetCheck())		//Loop=true
			iReturn=0;
	}
	return iReturn;
}

////////////////////////////////////////////////////////////////////////
/*
* 函数名称：GetRandID
* 函数介绍：产生随机数
* 输入参数：UINT uItemCount
* 输出参数：无
* 返回值  ：0 ~ uItemCount-1之间的一个随机数
*/
int CSimpleMP3Dlg::GetRandID(UINT uItemCount)
{
	return rand()%uItemCount;
}

////////////////////////////////////////////////////////////////////////
/*
* 函数名称：InitInterface
* 函数介绍：初始化界面
* 输入参数：无
* 输出参数：无
* 返回值  ：无
*/
void CSimpleMP3Dlg::InitInterface()
{
	//窗口的宽、高
	CRect WinRect, ListRect;
	this->GetWindowRect(&WinRect);
	m_List.GetWindowRect(&ListRect);
	m_iWidth              = WinRect.Width() - ListRect.Width();
	m_iHeight             = WinRect.Height() - ListRect.Height();
	m_iMinWidth           = WinRect.Width();	//窗口的最小宽度为设计宽度
	m_iMinHeight          = WinRect.Height();	//窗口的最小高度为设计高度

	//设置按钮图案
	m_Play.SetPic(IDB_BACKGROUND, IDB_PLAY);
	m_Pause.SetPic(IDB_BACKGROUND, IDB_PAUSE);
	m_Stop.SetPic(IDB_BACKGROUND, IDB_STOP);
	m_Prev.SetPic(IDB_BACKGROUND, IDB_PREV);
	m_Back.SetPic(IDB_BACKGROUND, IDB_BACK);
	m_Step.SetPic(IDB_BACKGROUND, IDB_STEP);
	m_Next.SetPic(IDB_BACKGROUND, IDB_NEXT);

	m_Mute.SetPic(IDB_BACKGROUND, IDB_VOLUME);
	
	m_Repeat.SetPic(IDB_BACKGROUND, IDB_REPEAT);
	m_Loop.SetPic(IDB_BACKGROUND, IDB_LOOP);
	m_Random.SetPic(IDB_BACKGROUND, IDB_RANDOM);

	m_M3u.SetPic(IDB_BACKGROUND, IDB_M3U);

	//设置Time
	m_Time.Initialize();
	CFont f;
	f.CreateFont(24,0,0,0,FW_BOLD,0,0,0,0,0,0,0,0,"宋体");
	m_Time.SetFont(&f);
	m_Time.SetWindowText("00:00");
	m_Time.SetTextColor(CONTROL_TEXTCOLOR);
	m_Time.SetBkColor(CONTROL_BKCOLOR);
	m_Time.SetTextHAlign(CScrollLabel::SL_TA_HCENTER);
	m_Time.SetTextVAlign(CScrollLabel::SL_TA_VCENTER);
	m_Time.SetScrollStyle(CScrollLabel::SL_NONE);

	//设置Title
	m_Title.Initialize();
	m_Title.SetWindowText("无");
	m_Title.SetTextColor(CONTROL_TEXTCOLOR);
	m_Title.SetBkColor(CONTROL_BKCOLOR);
	m_Title.SetTextVAlign(CScrollLabel::SL_TA_VCENTER);
	m_Title.SetScrollStyle(CScrollLabel::SL_HSCROLLLEFT);

	f.DeleteObject();

	//设置List
	m_List.SetTextColor(CONTROL_TEXTCOLOR);
	m_List.SetBkColor(CONTROL_BKCOLOR);
	m_List.SetSelectedBkColor(RGB(0, 0, 255));
	m_List.SetSelectedTextColor(CONTROL_TEXTCOLOR);
	m_List.SetHotBkColor(CONTROL_BKCOLOR);
	m_List.SetHotTextColor(RGB(255, 255, 255));

	//设置Slider
	m_Slider.SetBkColor(DIALOG_BKCOLOR);

	// 建立任务栏图标
	m_pTrayIcon = new CAnimateTrayIcon(
		this,				// Window asossiated with the tray icon
		MYWM_TRAYICON,		// Callback msg ID used by the window
		IDB_TRAYICON,
		16,
		RGB(255, 255, 255)
		);
	m_pTrayIcon->SetUpdateInterval(500);
	CString strWinTitle;
	strWinTitle.LoadString(IDS_TITLE);
	m_pTrayIcon->ModifyTip(strWinTitle);

	//加入Tooltip
	// CG: The following block was added by the ToolTips component.
	{
		// Create the ToolTip control.
		m_tooltip.Create(this);
		m_tooltip.Activate(TRUE);

		// TODO: Use one of the following forms to add controls:
		// m_tooltip.AddTool(GetDlgItem(IDC_<name>), <string-table-id>);
		m_tooltip.AddTool(&m_Play, _T("播放"));
		m_tooltip.AddTool(&m_Pause, _T("暂停/恢复"));
		m_tooltip.AddTool(&m_Stop, _T("停止"));
		m_tooltip.AddTool(&m_Prev, _T("上一首"));
		m_tooltip.AddTool(&m_Back, _T("向后5秒"));
		m_tooltip.AddTool(&m_Step, _T("向前5秒"));
		m_tooltip.AddTool(&m_Next, _T("下一首"));

		m_tooltip.AddTool(&m_Mute, _T("静音"));

		m_tooltip.AddTool(&m_Repeat, _T("重复"));
		m_tooltip.AddTool(&m_Loop, _T("循环"));
		m_tooltip.AddTool(&m_Random, _T("随机"));

		//CStatic控件要设定为Notify才可显示Tooltip
		m_tooltip.AddTool(&m_Time, _T("播放时间/剩余时间"));
		m_tooltip.AddTool(&m_Title, _T("标题"));

		m_tooltip.AddTool(&m_M3u, _T("列表菜单"));
	}
}